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Comparing libev/ev.c (file contents):
Revision 1.265 by root, Thu Oct 23 04:56:49 2008 UTC vs.
Revision 1.378 by root, Mon Jun 13 09:52:36 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>
… …
160# define WIN32_LEAN_AND_MEAN 196# define WIN32_LEAN_AND_MEAN
161# include <windows.h> 197# include <windows.h>
162# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
163# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
164# endif 200# endif
201# undef EV_AVOID_STDIO
165#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
166 211
167/* 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 */
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
168 253
169#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 256# define EV_USE_MONOTONIC EV_FEATURE_OS
172# else 257# else
173# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
174# endif 259# endif
175#endif 260#endif
176 261
177#ifndef EV_USE_REALTIME 262#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 264#endif
180 265
181#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 267# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 268# define EV_USE_NANOSLEEP EV_FEATURE_OS
184# else 269# else
185# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
186# endif 271# endif
187#endif 272#endif
188 273
189#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
190# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
191#endif 276#endif
192 277
193#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
194# ifdef _WIN32 279# ifdef _WIN32
195# define EV_USE_POLL 0 280# define EV_USE_POLL 0
196# else 281# else
197# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
198# endif 283# endif
199#endif 284#endif
200 285
201#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
204# else 289# else
205# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
206# endif 291# endif
207#endif 292#endif
208 293
… …
214# define EV_USE_PORT 0 299# define EV_USE_PORT 0
215#endif 300#endif
216 301
217#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
220# else 305# else
221# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
222# endif 307# endif
223#endif 308#endif
224 309
225#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
226# if EV_MINIMAL 311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
227# define EV_PID_HASHSIZE 1
228# else
229# define EV_PID_HASHSIZE 16
230# endif
231#endif 312#endif
232 313
233#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
234# if EV_MINIMAL 315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
235# define EV_INOTIFY_HASHSIZE 1
236# else
237# define EV_INOTIFY_HASHSIZE 16
238# endif
239#endif 316#endif
240 317
241#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
244# else 321# else
245# 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
246# endif 331# endif
247#endif 332#endif
248 333
249#if 0 /* debugging */ 334#if 0 /* debugging */
250# define EV_VERIFY 3 335# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 336# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 337# define EV_HEAP_CACHE_AT 1
253#endif 338#endif
254 339
255#ifndef EV_VERIFY 340#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL 341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
257#endif 342#endif
258 343
259#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
261#endif 346#endif
262 347
263#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
264# 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
265#endif 364#endif
266 365
267/* 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
268 373
269#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
270# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
271# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
272#endif 377#endif
… …
280# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
281# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
282#endif 387#endif
283 388
284#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
285# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
286# include <sys/select.h> 392# include <sys/select.h>
287# endif 393# endif
288#endif 394#endif
289 395
290#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
291# include <sys/utsname.h> 397# include <sys/statfs.h>
292# include <sys/inotify.h> 398# include <sys/inotify.h>
293/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
294# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
295# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
296# define EV_USE_INOTIFY 0 402# define EV_USE_INOTIFY 0
… …
302#endif 408#endif
303 409
304#if EV_USE_EVENTFD 410#if EV_USE_EVENTFD
305/* 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 */
306# include <stdint.h> 412# include <stdint.h>
307# ifdef __cplusplus 413# ifndef EFD_NONBLOCK
308extern "C" { 414# define EFD_NONBLOCK O_NONBLOCK
309# endif 415# endif
310int eventfd (unsigned int initval, int flags); 416# ifndef EFD_CLOEXEC
311# ifdef __cplusplus 417# ifdef O_CLOEXEC
312} 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
313# 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};
314#endif 446#endif
315 447
316/**/ 448/**/
317 449
318#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
319# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
320#else 452#else
321# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
322#endif 454#endif
323 455
324/* 456/*
325 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
326 * It is added to ev_rt_now when scheduling periodics
327 * to ensure progress, time-wise, even when rounding
328 * errors are against us.
329 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
330 * Better solutions welcome.
331 */ 459 */
332#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 */
333 462
334#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) */
335#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) */
336/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ 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)
337 468
338#if __GNUC__ >= 4 469#if __GNUC__ >= 4
339# define expect(expr,value) __builtin_expect ((expr),(value)) 470# define expect(expr,value) __builtin_expect ((expr),(value))
340# define noinline __attribute__ ((noinline)) 471# define noinline __attribute__ ((noinline))
341#else 472#else
… …
348 479
349#define expect_false(expr) expect ((expr) != 0, 0) 480#define expect_false(expr) expect ((expr) != 0, 0)
350#define expect_true(expr) expect ((expr) != 0, 1) 481#define expect_true(expr) expect ((expr) != 0, 1)
351#define inline_size static inline 482#define inline_size static inline
352 483
353#if EV_MINIMAL 484#if EV_FEATURE_CODE
485# define inline_speed static inline
486#else
354# define inline_speed static noinline 487# define inline_speed static noinline
488#endif
489
490#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
491
492#if EV_MINPRI == EV_MAXPRI
493# define ABSPRI(w) (((W)w), 0)
355#else 494#else
356# define inline_speed static inline
357#endif
358
359#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
360#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 495# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
496#endif
361 497
362#define EMPTY /* required for microsofts broken pseudo-c compiler */ 498#define EMPTY /* required for microsofts broken pseudo-c compiler */
363#define EMPTY2(a,b) /* used to suppress some warnings */ 499#define EMPTY2(a,b) /* used to suppress some warnings */
364 500
365typedef ev_watcher *W; 501typedef ev_watcher *W;
… …
367typedef ev_watcher_time *WT; 503typedef ev_watcher_time *WT;
368 504
369#define ev_active(w) ((W)(w))->active 505#define ev_active(w) ((W)(w))->active
370#define ev_at(w) ((WT)(w))->at 506#define ev_at(w) ((WT)(w))->at
371 507
508#if EV_USE_REALTIME
509/* sig_atomic_t is used to avoid per-thread variables or locking but still */
510/* giving it a reasonably high chance of working on typical architectures */
511static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
512#endif
513
372#if EV_USE_MONOTONIC 514#if EV_USE_MONOTONIC
373/* sig_atomic_t is used to avoid per-thread variables or locking but still */
374/* giving it a reasonably high chance of working on typical architetcures */
375static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 515static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
516#endif
517
518#ifndef EV_FD_TO_WIN32_HANDLE
519# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
520#endif
521#ifndef EV_WIN32_HANDLE_TO_FD
522# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
523#endif
524#ifndef EV_WIN32_CLOSE_FD
525# define EV_WIN32_CLOSE_FD(fd) close (fd)
376#endif 526#endif
377 527
378#ifdef _WIN32 528#ifdef _WIN32
379# include "ev_win32.c" 529# include "ev_win32.c"
380#endif 530#endif
381 531
382/*****************************************************************************/ 532/*****************************************************************************/
383 533
534/* define a suitable floor function (only used by periodics atm) */
535
536#if EV_USE_FLOOR
537# include <math.h>
538# define ev_floor(v) floor (v)
539#else
540
541#include <float.h>
542
543/* a floor() replacement function, should be independent of ev_tstamp type */
544static ev_tstamp noinline
545ev_floor (ev_tstamp v)
546{
547 /* the choice of shift factor is not terribly important */
548#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
549 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
550#else
551 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
552#endif
553
554 /* argument too large for an unsigned long? */
555 if (expect_false (v >= shift))
556 {
557 ev_tstamp f;
558
559 if (v == v - 1.)
560 return v; /* very large number */
561
562 f = shift * ev_floor (v * (1. / shift));
563 return f + ev_floor (v - f);
564 }
565
566 /* special treatment for negative args? */
567 if (expect_false (v < 0.))
568 {
569 ev_tstamp f = -ev_floor (-v);
570
571 return f - (f == v ? 0 : 1);
572 }
573
574 /* fits into an unsigned long */
575 return (unsigned long)v;
576}
577
578#endif
579
580/*****************************************************************************/
581
582#ifdef __linux
583# include <sys/utsname.h>
584#endif
585
586static unsigned int noinline
587ev_linux_version (void)
588{
589#ifdef __linux
590 unsigned int v = 0;
591 struct utsname buf;
592 int i;
593 char *p = buf.release;
594
595 if (uname (&buf))
596 return 0;
597
598 for (i = 3+1; --i; )
599 {
600 unsigned int c = 0;
601
602 for (;;)
603 {
604 if (*p >= '0' && *p <= '9')
605 c = c * 10 + *p++ - '0';
606 else
607 {
608 p += *p == '.';
609 break;
610 }
611 }
612
613 v = (v << 8) | c;
614 }
615
616 return v;
617#else
618 return 0;
619#endif
620}
621
622/*****************************************************************************/
623
624#if EV_AVOID_STDIO
625static void noinline
626ev_printerr (const char *msg)
627{
628 write (STDERR_FILENO, msg, strlen (msg));
629}
630#endif
631
384static void (*syserr_cb)(const char *msg); 632static void (*syserr_cb)(const char *msg);
385 633
386void 634void
387ev_set_syserr_cb (void (*cb)(const char *msg)) 635ev_set_syserr_cb (void (*cb)(const char *msg))
388{ 636{
389 syserr_cb = cb; 637 syserr_cb = cb;
390} 638}
391 639
392static void noinline 640static void noinline
393syserr (const char *msg) 641ev_syserr (const char *msg)
394{ 642{
395 if (!msg) 643 if (!msg)
396 msg = "(libev) system error"; 644 msg = "(libev) system error";
397 645
398 if (syserr_cb) 646 if (syserr_cb)
399 syserr_cb (msg); 647 syserr_cb (msg);
400 else 648 else
401 { 649 {
650#if EV_AVOID_STDIO
651 ev_printerr (msg);
652 ev_printerr (": ");
653 ev_printerr (strerror (errno));
654 ev_printerr ("\n");
655#else
402 perror (msg); 656 perror (msg);
657#endif
403 abort (); 658 abort ();
404 } 659 }
405} 660}
406 661
407static void * 662static void *
408ev_realloc_emul (void *ptr, long size) 663ev_realloc_emul (void *ptr, long size)
409{ 664{
665#if __GLIBC__
666 return realloc (ptr, size);
667#else
410 /* some systems, notably openbsd and darwin, fail to properly 668 /* some systems, notably openbsd and darwin, fail to properly
411 * implement realloc (x, 0) (as required by both ansi c-98 and 669 * implement realloc (x, 0) (as required by both ansi c-89 and
412 * the single unix specification, so work around them here. 670 * the single unix specification, so work around them here.
413 */ 671 */
414 672
415 if (size) 673 if (size)
416 return realloc (ptr, size); 674 return realloc (ptr, size);
417 675
418 free (ptr); 676 free (ptr);
419 return 0; 677 return 0;
678#endif
420} 679}
421 680
422static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 681static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
423 682
424void 683void
… …
432{ 691{
433 ptr = alloc (ptr, size); 692 ptr = alloc (ptr, size);
434 693
435 if (!ptr && size) 694 if (!ptr && size)
436 { 695 {
696#if EV_AVOID_STDIO
697 ev_printerr ("(libev) memory allocation failed, aborting.\n");
698#else
437 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 699 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
700#endif
438 abort (); 701 abort ();
439 } 702 }
440 703
441 return ptr; 704 return ptr;
442} 705}
… …
444#define ev_malloc(size) ev_realloc (0, (size)) 707#define ev_malloc(size) ev_realloc (0, (size))
445#define ev_free(ptr) ev_realloc ((ptr), 0) 708#define ev_free(ptr) ev_realloc ((ptr), 0)
446 709
447/*****************************************************************************/ 710/*****************************************************************************/
448 711
712/* set in reify when reification needed */
713#define EV_ANFD_REIFY 1
714
715/* file descriptor info structure */
449typedef struct 716typedef struct
450{ 717{
451 WL head; 718 WL head;
452 unsigned char events; 719 unsigned char events; /* the events watched for */
453 unsigned char reify; 720 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
454 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 721 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
455 unsigned char unused; /* currently unused padding */ 722 unsigned char unused;
723#if EV_USE_EPOLL
724 unsigned int egen; /* generation counter to counter epoll bugs */
725#endif
456#if EV_SELECT_IS_WINSOCKET 726#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
457 SOCKET handle; 727 SOCKET handle;
458#endif 728#endif
729#if EV_USE_IOCP
730 OVERLAPPED or, ow;
731#endif
459} ANFD; 732} ANFD;
460 733
734/* stores the pending event set for a given watcher */
461typedef struct 735typedef struct
462{ 736{
463 W w; 737 W w;
464 int events; 738 int events; /* the pending event set for the given watcher */
465} ANPENDING; 739} ANPENDING;
466 740
467#if EV_USE_INOTIFY 741#if EV_USE_INOTIFY
468/* hash table entry per inotify-id */ 742/* hash table entry per inotify-id */
469typedef struct 743typedef struct
… …
472} ANFS; 746} ANFS;
473#endif 747#endif
474 748
475/* Heap Entry */ 749/* Heap Entry */
476#if EV_HEAP_CACHE_AT 750#if EV_HEAP_CACHE_AT
751 /* a heap element */
477 typedef struct { 752 typedef struct {
478 ev_tstamp at; 753 ev_tstamp at;
479 WT w; 754 WT w;
480 } ANHE; 755 } ANHE;
481 756
482 #define ANHE_w(he) (he).w /* access watcher, read-write */ 757 #define ANHE_w(he) (he).w /* access watcher, read-write */
483 #define ANHE_at(he) (he).at /* access cached at, read-only */ 758 #define ANHE_at(he) (he).at /* access cached at, read-only */
484 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 759 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
485#else 760#else
761 /* a heap element */
486 typedef WT ANHE; 762 typedef WT ANHE;
487 763
488 #define ANHE_w(he) (he) 764 #define ANHE_w(he) (he)
489 #define ANHE_at(he) (he)->at 765 #define ANHE_at(he) (he)->at
490 #define ANHE_at_cache(he) 766 #define ANHE_at_cache(he)
… …
514 790
515 static int ev_default_loop_ptr; 791 static int ev_default_loop_ptr;
516 792
517#endif 793#endif
518 794
795#if EV_FEATURE_API
796# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
797# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
798# define EV_INVOKE_PENDING invoke_cb (EV_A)
799#else
800# define EV_RELEASE_CB (void)0
801# define EV_ACQUIRE_CB (void)0
802# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
803#endif
804
805#define EVBREAK_RECURSE 0x80
806
519/*****************************************************************************/ 807/*****************************************************************************/
520 808
809#ifndef EV_HAVE_EV_TIME
521ev_tstamp 810ev_tstamp
522ev_time (void) 811ev_time (void)
523{ 812{
524#if EV_USE_REALTIME 813#if EV_USE_REALTIME
814 if (expect_true (have_realtime))
815 {
525 struct timespec ts; 816 struct timespec ts;
526 clock_gettime (CLOCK_REALTIME, &ts); 817 clock_gettime (CLOCK_REALTIME, &ts);
527 return ts.tv_sec + ts.tv_nsec * 1e-9; 818 return ts.tv_sec + ts.tv_nsec * 1e-9;
528#else 819 }
820#endif
821
529 struct timeval tv; 822 struct timeval tv;
530 gettimeofday (&tv, 0); 823 gettimeofday (&tv, 0);
531 return tv.tv_sec + tv.tv_usec * 1e-6; 824 return tv.tv_sec + tv.tv_usec * 1e-6;
532#endif
533} 825}
826#endif
534 827
535ev_tstamp inline_size 828inline_size ev_tstamp
536get_clock (void) 829get_clock (void)
537{ 830{
538#if EV_USE_MONOTONIC 831#if EV_USE_MONOTONIC
539 if (expect_true (have_monotonic)) 832 if (expect_true (have_monotonic))
540 { 833 {
… …
561 if (delay > 0.) 854 if (delay > 0.)
562 { 855 {
563#if EV_USE_NANOSLEEP 856#if EV_USE_NANOSLEEP
564 struct timespec ts; 857 struct timespec ts;
565 858
566 ts.tv_sec = (time_t)delay; 859 EV_TS_SET (ts, delay);
567 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
568
569 nanosleep (&ts, 0); 860 nanosleep (&ts, 0);
570#elif defined(_WIN32) 861#elif defined(_WIN32)
571 Sleep ((unsigned long)(delay * 1e3)); 862 Sleep ((unsigned long)(delay * 1e3));
572#else 863#else
573 struct timeval tv; 864 struct timeval tv;
574 865
575 tv.tv_sec = (time_t)delay;
576 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
577
578 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 866 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
579 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 867 /* something not guaranteed by newer posix versions, but guaranteed */
580 /* by older ones */ 868 /* by older ones */
869 EV_TV_SET (tv, delay);
581 select (0, 0, 0, 0, &tv); 870 select (0, 0, 0, 0, &tv);
582#endif 871#endif
583 } 872 }
584} 873}
585 874
586/*****************************************************************************/ 875/*****************************************************************************/
587 876
588#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 877#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
589 878
590int inline_size 879/* find a suitable new size for the given array, */
880/* hopefully by rounding to a nice-to-malloc size */
881inline_size int
591array_nextsize (int elem, int cur, int cnt) 882array_nextsize (int elem, int cur, int cnt)
592{ 883{
593 int ncur = cur + 1; 884 int ncur = cur + 1;
594 885
595 do 886 do
… …
636 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 927 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
637 } 928 }
638#endif 929#endif
639 930
640#define array_free(stem, idx) \ 931#define array_free(stem, idx) \
641 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 932 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
642 933
643/*****************************************************************************/ 934/*****************************************************************************/
935
936/* dummy callback for pending events */
937static void noinline
938pendingcb (EV_P_ ev_prepare *w, int revents)
939{
940}
644 941
645void noinline 942void noinline
646ev_feed_event (EV_P_ void *w, int revents) 943ev_feed_event (EV_P_ void *w, int revents)
647{ 944{
648 W w_ = (W)w; 945 W w_ = (W)w;
… …
657 pendings [pri][w_->pending - 1].w = w_; 954 pendings [pri][w_->pending - 1].w = w_;
658 pendings [pri][w_->pending - 1].events = revents; 955 pendings [pri][w_->pending - 1].events = revents;
659 } 956 }
660} 957}
661 958
662void inline_speed 959inline_speed void
960feed_reverse (EV_P_ W w)
961{
962 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
963 rfeeds [rfeedcnt++] = w;
964}
965
966inline_size void
967feed_reverse_done (EV_P_ int revents)
968{
969 do
970 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
971 while (rfeedcnt);
972}
973
974inline_speed void
663queue_events (EV_P_ W *events, int eventcnt, int type) 975queue_events (EV_P_ W *events, int eventcnt, int type)
664{ 976{
665 int i; 977 int i;
666 978
667 for (i = 0; i < eventcnt; ++i) 979 for (i = 0; i < eventcnt; ++i)
668 ev_feed_event (EV_A_ events [i], type); 980 ev_feed_event (EV_A_ events [i], type);
669} 981}
670 982
671/*****************************************************************************/ 983/*****************************************************************************/
672 984
673void inline_speed 985inline_speed void
674fd_event (EV_P_ int fd, int revents) 986fd_event_nocheck (EV_P_ int fd, int revents)
675{ 987{
676 ANFD *anfd = anfds + fd; 988 ANFD *anfd = anfds + fd;
677 ev_io *w; 989 ev_io *w;
678 990
679 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 991 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
683 if (ev) 995 if (ev)
684 ev_feed_event (EV_A_ (W)w, ev); 996 ev_feed_event (EV_A_ (W)w, ev);
685 } 997 }
686} 998}
687 999
1000/* do not submit kernel events for fds that have reify set */
1001/* because that means they changed while we were polling for new events */
1002inline_speed void
1003fd_event (EV_P_ int fd, int revents)
1004{
1005 ANFD *anfd = anfds + fd;
1006
1007 if (expect_true (!anfd->reify))
1008 fd_event_nocheck (EV_A_ fd, revents);
1009}
1010
688void 1011void
689ev_feed_fd_event (EV_P_ int fd, int revents) 1012ev_feed_fd_event (EV_P_ int fd, int revents)
690{ 1013{
691 if (fd >= 0 && fd < anfdmax) 1014 if (fd >= 0 && fd < anfdmax)
692 fd_event (EV_A_ fd, revents); 1015 fd_event_nocheck (EV_A_ fd, revents);
693} 1016}
694 1017
695void inline_size 1018/* make sure the external fd watch events are in-sync */
1019/* with the kernel/libev internal state */
1020inline_size void
696fd_reify (EV_P) 1021fd_reify (EV_P)
697{ 1022{
698 int i; 1023 int i;
1024
1025#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1026 for (i = 0; i < fdchangecnt; ++i)
1027 {
1028 int fd = fdchanges [i];
1029 ANFD *anfd = anfds + fd;
1030
1031 if (anfd->reify & EV__IOFDSET && anfd->head)
1032 {
1033 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1034
1035 if (handle != anfd->handle)
1036 {
1037 unsigned long arg;
1038
1039 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1040
1041 /* handle changed, but fd didn't - we need to do it in two steps */
1042 backend_modify (EV_A_ fd, anfd->events, 0);
1043 anfd->events = 0;
1044 anfd->handle = handle;
1045 }
1046 }
1047 }
1048#endif
699 1049
700 for (i = 0; i < fdchangecnt; ++i) 1050 for (i = 0; i < fdchangecnt; ++i)
701 { 1051 {
702 int fd = fdchanges [i]; 1052 int fd = fdchanges [i];
703 ANFD *anfd = anfds + fd; 1053 ANFD *anfd = anfds + fd;
704 ev_io *w; 1054 ev_io *w;
705 1055
706 unsigned char events = 0; 1056 unsigned char o_events = anfd->events;
1057 unsigned char o_reify = anfd->reify;
707 1058
708 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1059 anfd->reify = 0;
709 events |= (unsigned char)w->events;
710 1060
711#if EV_SELECT_IS_WINSOCKET 1061 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
712 if (events)
713 { 1062 {
714 unsigned long arg; 1063 anfd->events = 0;
715 #ifdef EV_FD_TO_WIN32_HANDLE 1064
716 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1065 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
717 #else 1066 anfd->events |= (unsigned char)w->events;
718 anfd->handle = _get_osfhandle (fd); 1067
719 #endif 1068 if (o_events != anfd->events)
720 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1069 o_reify = EV__IOFDSET; /* actually |= */
721 } 1070 }
722#endif
723 1071
724 { 1072 if (o_reify & EV__IOFDSET)
725 unsigned char o_events = anfd->events;
726 unsigned char o_reify = anfd->reify;
727
728 anfd->reify = 0;
729 anfd->events = events;
730
731 if (o_events != events || o_reify & EV_IOFDSET)
732 backend_modify (EV_A_ fd, o_events, events); 1073 backend_modify (EV_A_ fd, o_events, anfd->events);
733 }
734 } 1074 }
735 1075
736 fdchangecnt = 0; 1076 fdchangecnt = 0;
737} 1077}
738 1078
739void inline_size 1079/* something about the given fd changed */
1080inline_size void
740fd_change (EV_P_ int fd, int flags) 1081fd_change (EV_P_ int fd, int flags)
741{ 1082{
742 unsigned char reify = anfds [fd].reify; 1083 unsigned char reify = anfds [fd].reify;
743 anfds [fd].reify |= flags; 1084 anfds [fd].reify |= flags;
744 1085
… …
748 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1089 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
749 fdchanges [fdchangecnt - 1] = fd; 1090 fdchanges [fdchangecnt - 1] = fd;
750 } 1091 }
751} 1092}
752 1093
753void inline_speed 1094/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1095inline_speed void
754fd_kill (EV_P_ int fd) 1096fd_kill (EV_P_ int fd)
755{ 1097{
756 ev_io *w; 1098 ev_io *w;
757 1099
758 while ((w = (ev_io *)anfds [fd].head)) 1100 while ((w = (ev_io *)anfds [fd].head))
… …
760 ev_io_stop (EV_A_ w); 1102 ev_io_stop (EV_A_ w);
761 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1103 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
762 } 1104 }
763} 1105}
764 1106
765int inline_size 1107/* check whether the given fd is actually valid, for error recovery */
1108inline_size int
766fd_valid (int fd) 1109fd_valid (int fd)
767{ 1110{
768#ifdef _WIN32 1111#ifdef _WIN32
769 return _get_osfhandle (fd) != -1; 1112 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
770#else 1113#else
771 return fcntl (fd, F_GETFD) != -1; 1114 return fcntl (fd, F_GETFD) != -1;
772#endif 1115#endif
773} 1116}
774 1117
… …
792 1135
793 for (fd = anfdmax; fd--; ) 1136 for (fd = anfdmax; fd--; )
794 if (anfds [fd].events) 1137 if (anfds [fd].events)
795 { 1138 {
796 fd_kill (EV_A_ fd); 1139 fd_kill (EV_A_ fd);
797 return; 1140 break;
798 } 1141 }
799} 1142}
800 1143
801/* usually called after fork if backend needs to re-arm all fds from scratch */ 1144/* usually called after fork if backend needs to re-arm all fds from scratch */
802static void noinline 1145static void noinline
… …
806 1149
807 for (fd = 0; fd < anfdmax; ++fd) 1150 for (fd = 0; fd < anfdmax; ++fd)
808 if (anfds [fd].events) 1151 if (anfds [fd].events)
809 { 1152 {
810 anfds [fd].events = 0; 1153 anfds [fd].events = 0;
1154 anfds [fd].emask = 0;
811 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1155 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
812 } 1156 }
813} 1157}
814 1158
1159/* used to prepare libev internal fd's */
1160/* this is not fork-safe */
1161inline_speed void
1162fd_intern (int fd)
1163{
1164#ifdef _WIN32
1165 unsigned long arg = 1;
1166 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1167#else
1168 fcntl (fd, F_SETFD, FD_CLOEXEC);
1169 fcntl (fd, F_SETFL, O_NONBLOCK);
1170#endif
1171}
1172
815/*****************************************************************************/ 1173/*****************************************************************************/
816 1174
817/* 1175/*
818 * the heap functions want a real array index. array index 0 uis guaranteed to not 1176 * the heap functions want a real array index. array index 0 is guaranteed to not
819 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1177 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
820 * the branching factor of the d-tree. 1178 * the branching factor of the d-tree.
821 */ 1179 */
822 1180
823/* 1181/*
… …
832#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1190#define HEAP0 (DHEAP - 1) /* index of first element in heap */
833#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1191#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
834#define UPHEAP_DONE(p,k) ((p) == (k)) 1192#define UPHEAP_DONE(p,k) ((p) == (k))
835 1193
836/* away from the root */ 1194/* away from the root */
837void inline_speed 1195inline_speed void
838downheap (ANHE *heap, int N, int k) 1196downheap (ANHE *heap, int N, int k)
839{ 1197{
840 ANHE he = heap [k]; 1198 ANHE he = heap [k];
841 ANHE *E = heap + N + HEAP0; 1199 ANHE *E = heap + N + HEAP0;
842 1200
… …
882#define HEAP0 1 1240#define HEAP0 1
883#define HPARENT(k) ((k) >> 1) 1241#define HPARENT(k) ((k) >> 1)
884#define UPHEAP_DONE(p,k) (!(p)) 1242#define UPHEAP_DONE(p,k) (!(p))
885 1243
886/* away from the root */ 1244/* away from the root */
887void inline_speed 1245inline_speed void
888downheap (ANHE *heap, int N, int k) 1246downheap (ANHE *heap, int N, int k)
889{ 1247{
890 ANHE he = heap [k]; 1248 ANHE he = heap [k];
891 1249
892 for (;;) 1250 for (;;)
893 { 1251 {
894 int c = k << 1; 1252 int c = k << 1;
895 1253
896 if (c > N + HEAP0 - 1) 1254 if (c >= N + HEAP0)
897 break; 1255 break;
898 1256
899 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1257 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
900 ? 1 : 0; 1258 ? 1 : 0;
901 1259
… …
912 ev_active (ANHE_w (he)) = k; 1270 ev_active (ANHE_w (he)) = k;
913} 1271}
914#endif 1272#endif
915 1273
916/* towards the root */ 1274/* towards the root */
917void inline_speed 1275inline_speed void
918upheap (ANHE *heap, int k) 1276upheap (ANHE *heap, int k)
919{ 1277{
920 ANHE he = heap [k]; 1278 ANHE he = heap [k];
921 1279
922 for (;;) 1280 for (;;)
… …
933 1291
934 heap [k] = he; 1292 heap [k] = he;
935 ev_active (ANHE_w (he)) = k; 1293 ev_active (ANHE_w (he)) = k;
936} 1294}
937 1295
938void inline_size 1296/* move an element suitably so it is in a correct place */
1297inline_size void
939adjustheap (ANHE *heap, int N, int k) 1298adjustheap (ANHE *heap, int N, int k)
940{ 1299{
941 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1300 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
942 upheap (heap, k); 1301 upheap (heap, k);
943 else 1302 else
944 downheap (heap, N, k); 1303 downheap (heap, N, k);
945} 1304}
946 1305
947/* rebuild the heap: this function is used only once and executed rarely */ 1306/* rebuild the heap: this function is used only once and executed rarely */
948void inline_size 1307inline_size void
949reheap (ANHE *heap, int N) 1308reheap (ANHE *heap, int N)
950{ 1309{
951 int i; 1310 int i;
952 1311
953 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1312 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
956 upheap (heap, i + HEAP0); 1315 upheap (heap, i + HEAP0);
957} 1316}
958 1317
959/*****************************************************************************/ 1318/*****************************************************************************/
960 1319
1320/* associate signal watchers to a signal signal */
961typedef struct 1321typedef struct
962{ 1322{
1323 EV_ATOMIC_T pending;
1324#if EV_MULTIPLICITY
1325 EV_P;
1326#endif
963 WL head; 1327 WL head;
964 EV_ATOMIC_T gotsig;
965} ANSIG; 1328} ANSIG;
966 1329
967static ANSIG *signals; 1330static ANSIG signals [EV_NSIG - 1];
968static int signalmax;
969
970static EV_ATOMIC_T gotsig;
971 1331
972/*****************************************************************************/ 1332/*****************************************************************************/
973 1333
974void inline_speed 1334#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
975fd_intern (int fd)
976{
977#ifdef _WIN32
978 unsigned long arg = 1;
979 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
980#else
981 fcntl (fd, F_SETFD, FD_CLOEXEC);
982 fcntl (fd, F_SETFL, O_NONBLOCK);
983#endif
984}
985 1335
986static void noinline 1336static void noinline
987evpipe_init (EV_P) 1337evpipe_init (EV_P)
988{ 1338{
989 if (!ev_is_active (&pipeev)) 1339 if (!ev_is_active (&pipe_w))
990 { 1340 {
991#if EV_USE_EVENTFD 1341# if EV_USE_EVENTFD
1342 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1343 if (evfd < 0 && errno == EINVAL)
992 if ((evfd = eventfd (0, 0)) >= 0) 1344 evfd = eventfd (0, 0);
1345
1346 if (evfd >= 0)
993 { 1347 {
994 evpipe [0] = -1; 1348 evpipe [0] = -1;
995 fd_intern (evfd); 1349 fd_intern (evfd); /* doing it twice doesn't hurt */
996 ev_io_set (&pipeev, evfd, EV_READ); 1350 ev_io_set (&pipe_w, evfd, EV_READ);
997 } 1351 }
998 else 1352 else
999#endif 1353# endif
1000 { 1354 {
1001 while (pipe (evpipe)) 1355 while (pipe (evpipe))
1002 syserr ("(libev) error creating signal/async pipe"); 1356 ev_syserr ("(libev) error creating signal/async pipe");
1003 1357
1004 fd_intern (evpipe [0]); 1358 fd_intern (evpipe [0]);
1005 fd_intern (evpipe [1]); 1359 fd_intern (evpipe [1]);
1006 ev_io_set (&pipeev, evpipe [0], EV_READ); 1360 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1007 } 1361 }
1008 1362
1009 ev_io_start (EV_A_ &pipeev); 1363 ev_io_start (EV_A_ &pipe_w);
1010 ev_unref (EV_A); /* watcher should not keep loop alive */ 1364 ev_unref (EV_A); /* watcher should not keep loop alive */
1011 } 1365 }
1012} 1366}
1013 1367
1014void inline_size 1368inline_size void
1015evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1369evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1016{ 1370{
1017 if (!*flag) 1371 if (!*flag)
1018 { 1372 {
1019 int old_errno = errno; /* save errno because write might clobber it */
1020
1021 *flag = 1; 1373 *flag = 1;
1022 1374
1375 pipe_write_skipped = 1;
1376
1377 if (pipe_write_wanted)
1378 {
1379 int old_errno = errno; /* save errno because write will clobber it */
1380 char dummy;
1381
1382 pipe_write_skipped = 0;
1383
1384#if EV_USE_EVENTFD
1385 if (evfd >= 0)
1386 {
1387 uint64_t counter = 1;
1388 write (evfd, &counter, sizeof (uint64_t));
1389 }
1390 else
1391#endif
1392 {
1393 /* win32 people keep sending patches that change this write() to send() */
1394 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1395 /* so when you think this write should be a send instead, please find out */
1396 /* where your send() is from - it's definitely not the microsoft send, and */
1397 /* tell me. thank you. */
1398 write (evpipe [1], &dummy, 1);
1399 }
1400
1401 errno = old_errno;
1402 }
1403 }
1404}
1405
1406/* called whenever the libev signal pipe */
1407/* got some events (signal, async) */
1408static void
1409pipecb (EV_P_ ev_io *iow, int revents)
1410{
1411 int i;
1412
1413 if (revents & EV_READ)
1414 {
1023#if EV_USE_EVENTFD 1415#if EV_USE_EVENTFD
1024 if (evfd >= 0) 1416 if (evfd >= 0)
1025 { 1417 {
1026 uint64_t counter = 1; 1418 uint64_t counter;
1027 write (evfd, &counter, sizeof (uint64_t)); 1419 read (evfd, &counter, sizeof (uint64_t));
1028 } 1420 }
1029 else 1421 else
1030#endif 1422#endif
1031 write (evpipe [1], &old_errno, 1); 1423 {
1032
1033 errno = old_errno;
1034 }
1035}
1036
1037static void
1038pipecb (EV_P_ ev_io *iow, int revents)
1039{
1040#if EV_USE_EVENTFD
1041 if (evfd >= 0)
1042 {
1043 uint64_t counter;
1044 read (evfd, &counter, sizeof (uint64_t));
1045 }
1046 else
1047#endif
1048 {
1049 char dummy; 1424 char dummy;
1425 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1050 read (evpipe [0], &dummy, 1); 1426 read (evpipe [0], &dummy, 1);
1427 }
1428 }
1429
1430 pipe_write_skipped = 0;
1431
1432#if EV_SIGNAL_ENABLE
1433 if (sig_pending)
1051 } 1434 {
1435 sig_pending = 0;
1052 1436
1053 if (gotsig && ev_is_default_loop (EV_A)) 1437 for (i = EV_NSIG - 1; i--; )
1054 { 1438 if (expect_false (signals [i].pending))
1055 int signum;
1056 gotsig = 0;
1057
1058 for (signum = signalmax; signum--; )
1059 if (signals [signum].gotsig)
1060 ev_feed_signal_event (EV_A_ signum + 1); 1439 ev_feed_signal_event (EV_A_ i + 1);
1061 } 1440 }
1441#endif
1062 1442
1063#if EV_ASYNC_ENABLE 1443#if EV_ASYNC_ENABLE
1064 if (gotasync) 1444 if (async_pending)
1065 { 1445 {
1066 int i; 1446 async_pending = 0;
1067 gotasync = 0;
1068 1447
1069 for (i = asynccnt; i--; ) 1448 for (i = asynccnt; i--; )
1070 if (asyncs [i]->sent) 1449 if (asyncs [i]->sent)
1071 { 1450 {
1072 asyncs [i]->sent = 0; 1451 asyncs [i]->sent = 0;
… …
1076#endif 1455#endif
1077} 1456}
1078 1457
1079/*****************************************************************************/ 1458/*****************************************************************************/
1080 1459
1460void
1461ev_feed_signal (int signum)
1462{
1463#if EV_MULTIPLICITY
1464 EV_P = signals [signum - 1].loop;
1465
1466 if (!EV_A)
1467 return;
1468#endif
1469
1470 evpipe_init (EV_A);
1471
1472 signals [signum - 1].pending = 1;
1473 evpipe_write (EV_A_ &sig_pending);
1474}
1475
1081static void 1476static void
1082ev_sighandler (int signum) 1477ev_sighandler (int signum)
1083{ 1478{
1084#if EV_MULTIPLICITY
1085 struct ev_loop *loop = &default_loop_struct;
1086#endif
1087
1088#if _WIN32 1479#ifdef _WIN32
1089 signal (signum, ev_sighandler); 1480 signal (signum, ev_sighandler);
1090#endif 1481#endif
1091 1482
1092 signals [signum - 1].gotsig = 1; 1483 ev_feed_signal (signum);
1093 evpipe_write (EV_A_ &gotsig);
1094} 1484}
1095 1485
1096void noinline 1486void noinline
1097ev_feed_signal_event (EV_P_ int signum) 1487ev_feed_signal_event (EV_P_ int signum)
1098{ 1488{
1099 WL w; 1489 WL w;
1100 1490
1491 if (expect_false (signum <= 0 || signum > EV_NSIG))
1492 return;
1493
1494 --signum;
1495
1101#if EV_MULTIPLICITY 1496#if EV_MULTIPLICITY
1102 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1497 /* it is permissible to try to feed a signal to the wrong loop */
1103#endif 1498 /* or, likely more useful, feeding a signal nobody is waiting for */
1104 1499
1105 --signum; 1500 if (expect_false (signals [signum].loop != EV_A))
1106
1107 if (signum < 0 || signum >= signalmax)
1108 return; 1501 return;
1502#endif
1109 1503
1110 signals [signum].gotsig = 0; 1504 signals [signum].pending = 0;
1111 1505
1112 for (w = signals [signum].head; w; w = w->next) 1506 for (w = signals [signum].head; w; w = w->next)
1113 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1507 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1114} 1508}
1115 1509
1510#if EV_USE_SIGNALFD
1511static void
1512sigfdcb (EV_P_ ev_io *iow, int revents)
1513{
1514 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1515
1516 for (;;)
1517 {
1518 ssize_t res = read (sigfd, si, sizeof (si));
1519
1520 /* not ISO-C, as res might be -1, but works with SuS */
1521 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1522 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1523
1524 if (res < (ssize_t)sizeof (si))
1525 break;
1526 }
1527}
1528#endif
1529
1530#endif
1531
1116/*****************************************************************************/ 1532/*****************************************************************************/
1117 1533
1534#if EV_CHILD_ENABLE
1118static WL childs [EV_PID_HASHSIZE]; 1535static WL childs [EV_PID_HASHSIZE];
1119
1120#ifndef _WIN32
1121 1536
1122static ev_signal childev; 1537static ev_signal childev;
1123 1538
1124#ifndef WIFCONTINUED 1539#ifndef WIFCONTINUED
1125# define WIFCONTINUED(status) 0 1540# define WIFCONTINUED(status) 0
1126#endif 1541#endif
1127 1542
1128void inline_speed 1543/* handle a single child status event */
1544inline_speed void
1129child_reap (EV_P_ int chain, int pid, int status) 1545child_reap (EV_P_ int chain, int pid, int status)
1130{ 1546{
1131 ev_child *w; 1547 ev_child *w;
1132 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1548 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1133 1549
1134 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1550 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1135 { 1551 {
1136 if ((w->pid == pid || !w->pid) 1552 if ((w->pid == pid || !w->pid)
1137 && (!traced || (w->flags & 1))) 1553 && (!traced || (w->flags & 1)))
1138 { 1554 {
1139 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1555 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1146 1562
1147#ifndef WCONTINUED 1563#ifndef WCONTINUED
1148# define WCONTINUED 0 1564# define WCONTINUED 0
1149#endif 1565#endif
1150 1566
1567/* called on sigchld etc., calls waitpid */
1151static void 1568static void
1152childcb (EV_P_ ev_signal *sw, int revents) 1569childcb (EV_P_ ev_signal *sw, int revents)
1153{ 1570{
1154 int pid, status; 1571 int pid, status;
1155 1572
… …
1163 /* make sure we are called again until all children have been reaped */ 1580 /* make sure we are called again until all children have been reaped */
1164 /* we need to do it this way so that the callback gets called before we continue */ 1581 /* we need to do it this way so that the callback gets called before we continue */
1165 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1582 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1166 1583
1167 child_reap (EV_A_ pid, pid, status); 1584 child_reap (EV_A_ pid, pid, status);
1168 if (EV_PID_HASHSIZE > 1) 1585 if ((EV_PID_HASHSIZE) > 1)
1169 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1586 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1170} 1587}
1171 1588
1172#endif 1589#endif
1173 1590
1174/*****************************************************************************/ 1591/*****************************************************************************/
1175 1592
1593#if EV_USE_IOCP
1594# include "ev_iocp.c"
1595#endif
1176#if EV_USE_PORT 1596#if EV_USE_PORT
1177# include "ev_port.c" 1597# include "ev_port.c"
1178#endif 1598#endif
1179#if EV_USE_KQUEUE 1599#if EV_USE_KQUEUE
1180# include "ev_kqueue.c" 1600# include "ev_kqueue.c"
… …
1236 /* kqueue is borked on everything but netbsd apparently */ 1656 /* kqueue is borked on everything but netbsd apparently */
1237 /* it usually doesn't work correctly on anything but sockets and pipes */ 1657 /* it usually doesn't work correctly on anything but sockets and pipes */
1238 flags &= ~EVBACKEND_KQUEUE; 1658 flags &= ~EVBACKEND_KQUEUE;
1239#endif 1659#endif
1240#ifdef __APPLE__ 1660#ifdef __APPLE__
1241 // flags &= ~EVBACKEND_KQUEUE; for documentation 1661 /* only select works correctly on that "unix-certified" platform */
1242 flags &= ~EVBACKEND_POLL; 1662 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1663 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1664#endif
1665#ifdef __FreeBSD__
1666 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1243#endif 1667#endif
1244 1668
1245 return flags; 1669 return flags;
1246} 1670}
1247 1671
… …
1249ev_embeddable_backends (void) 1673ev_embeddable_backends (void)
1250{ 1674{
1251 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1675 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1252 1676
1253 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1677 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1254 /* please fix it and tell me how to detect the fix */ 1678 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1255 flags &= ~EVBACKEND_EPOLL; 1679 flags &= ~EVBACKEND_EPOLL;
1256 1680
1257 return flags; 1681 return flags;
1258} 1682}
1259 1683
1260unsigned int 1684unsigned int
1261ev_backend (EV_P) 1685ev_backend (EV_P)
1262{ 1686{
1263 return backend; 1687 return backend;
1264} 1688}
1265 1689
1690#if EV_FEATURE_API
1266unsigned int 1691unsigned int
1267ev_loop_count (EV_P) 1692ev_iteration (EV_P)
1268{ 1693{
1269 return loop_count; 1694 return loop_count;
1270} 1695}
1271 1696
1697unsigned int
1698ev_depth (EV_P)
1699{
1700 return loop_depth;
1701}
1702
1272void 1703void
1273ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1704ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1274{ 1705{
1275 io_blocktime = interval; 1706 io_blocktime = interval;
1276} 1707}
… …
1279ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1710ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1280{ 1711{
1281 timeout_blocktime = interval; 1712 timeout_blocktime = interval;
1282} 1713}
1283 1714
1715void
1716ev_set_userdata (EV_P_ void *data)
1717{
1718 userdata = data;
1719}
1720
1721void *
1722ev_userdata (EV_P)
1723{
1724 return userdata;
1725}
1726
1727void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1728{
1729 invoke_cb = invoke_pending_cb;
1730}
1731
1732void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1733{
1734 release_cb = release;
1735 acquire_cb = acquire;
1736}
1737#endif
1738
1739/* initialise a loop structure, must be zero-initialised */
1284static void noinline 1740static void noinline
1285loop_init (EV_P_ unsigned int flags) 1741loop_init (EV_P_ unsigned int flags)
1286{ 1742{
1287 if (!backend) 1743 if (!backend)
1288 { 1744 {
1745 origflags = flags;
1746
1747#if EV_USE_REALTIME
1748 if (!have_realtime)
1749 {
1750 struct timespec ts;
1751
1752 if (!clock_gettime (CLOCK_REALTIME, &ts))
1753 have_realtime = 1;
1754 }
1755#endif
1756
1289#if EV_USE_MONOTONIC 1757#if EV_USE_MONOTONIC
1758 if (!have_monotonic)
1290 { 1759 {
1291 struct timespec ts; 1760 struct timespec ts;
1761
1292 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1762 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1293 have_monotonic = 1; 1763 have_monotonic = 1;
1294 } 1764 }
1295#endif
1296
1297 ev_rt_now = ev_time ();
1298 mn_now = get_clock ();
1299 now_floor = mn_now;
1300 rtmn_diff = ev_rt_now - mn_now;
1301
1302 io_blocktime = 0.;
1303 timeout_blocktime = 0.;
1304 backend = 0;
1305 backend_fd = -1;
1306 gotasync = 0;
1307#if EV_USE_INOTIFY
1308 fs_fd = -2;
1309#endif 1765#endif
1310 1766
1311 /* pid check not overridable via env */ 1767 /* pid check not overridable via env */
1312#ifndef _WIN32 1768#ifndef _WIN32
1313 if (flags & EVFLAG_FORKCHECK) 1769 if (flags & EVFLAG_FORKCHECK)
… …
1317 if (!(flags & EVFLAG_NOENV) 1773 if (!(flags & EVFLAG_NOENV)
1318 && !enable_secure () 1774 && !enable_secure ()
1319 && getenv ("LIBEV_FLAGS")) 1775 && getenv ("LIBEV_FLAGS"))
1320 flags = atoi (getenv ("LIBEV_FLAGS")); 1776 flags = atoi (getenv ("LIBEV_FLAGS"));
1321 1777
1322 if (!(flags & 0x0000ffffU)) 1778 ev_rt_now = ev_time ();
1779 mn_now = get_clock ();
1780 now_floor = mn_now;
1781 rtmn_diff = ev_rt_now - mn_now;
1782#if EV_FEATURE_API
1783 invoke_cb = ev_invoke_pending;
1784#endif
1785
1786 io_blocktime = 0.;
1787 timeout_blocktime = 0.;
1788 backend = 0;
1789 backend_fd = -1;
1790 sig_pending = 0;
1791#if EV_ASYNC_ENABLE
1792 async_pending = 0;
1793#endif
1794 pipe_write_skipped = 0;
1795 pipe_write_wanted = 0;
1796#if EV_USE_INOTIFY
1797 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1798#endif
1799#if EV_USE_SIGNALFD
1800 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1801#endif
1802
1803 if (!(flags & EVBACKEND_MASK))
1323 flags |= ev_recommended_backends (); 1804 flags |= ev_recommended_backends ();
1324 1805
1806#if EV_USE_IOCP
1807 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1808#endif
1325#if EV_USE_PORT 1809#if EV_USE_PORT
1326 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1810 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1327#endif 1811#endif
1328#if EV_USE_KQUEUE 1812#if EV_USE_KQUEUE
1329 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1813 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1336#endif 1820#endif
1337#if EV_USE_SELECT 1821#if EV_USE_SELECT
1338 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1822 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1339#endif 1823#endif
1340 1824
1825 ev_prepare_init (&pending_w, pendingcb);
1826
1827#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1341 ev_init (&pipeev, pipecb); 1828 ev_init (&pipe_w, pipecb);
1342 ev_set_priority (&pipeev, EV_MAXPRI); 1829 ev_set_priority (&pipe_w, EV_MAXPRI);
1830#endif
1343 } 1831 }
1344} 1832}
1345 1833
1346static void noinline 1834/* free up a loop structure */
1835void
1347loop_destroy (EV_P) 1836ev_loop_destroy (EV_P)
1348{ 1837{
1349 int i; 1838 int i;
1350 1839
1840#if EV_MULTIPLICITY
1841 /* mimic free (0) */
1842 if (!EV_A)
1843 return;
1844#endif
1845
1846#if EV_CLEANUP_ENABLE
1847 /* queue cleanup watchers (and execute them) */
1848 if (expect_false (cleanupcnt))
1849 {
1850 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1851 EV_INVOKE_PENDING;
1852 }
1853#endif
1854
1855#if EV_CHILD_ENABLE
1856 if (ev_is_active (&childev))
1857 {
1858 ev_ref (EV_A); /* child watcher */
1859 ev_signal_stop (EV_A_ &childev);
1860 }
1861#endif
1862
1351 if (ev_is_active (&pipeev)) 1863 if (ev_is_active (&pipe_w))
1352 { 1864 {
1353 ev_ref (EV_A); /* signal watcher */ 1865 /*ev_ref (EV_A);*/
1354 ev_io_stop (EV_A_ &pipeev); 1866 /*ev_io_stop (EV_A_ &pipe_w);*/
1355 1867
1356#if EV_USE_EVENTFD 1868#if EV_USE_EVENTFD
1357 if (evfd >= 0) 1869 if (evfd >= 0)
1358 close (evfd); 1870 close (evfd);
1359#endif 1871#endif
1360 1872
1361 if (evpipe [0] >= 0) 1873 if (evpipe [0] >= 0)
1362 { 1874 {
1363 close (evpipe [0]); 1875 EV_WIN32_CLOSE_FD (evpipe [0]);
1364 close (evpipe [1]); 1876 EV_WIN32_CLOSE_FD (evpipe [1]);
1365 } 1877 }
1366 } 1878 }
1879
1880#if EV_USE_SIGNALFD
1881 if (ev_is_active (&sigfd_w))
1882 close (sigfd);
1883#endif
1367 1884
1368#if EV_USE_INOTIFY 1885#if EV_USE_INOTIFY
1369 if (fs_fd >= 0) 1886 if (fs_fd >= 0)
1370 close (fs_fd); 1887 close (fs_fd);
1371#endif 1888#endif
1372 1889
1373 if (backend_fd >= 0) 1890 if (backend_fd >= 0)
1374 close (backend_fd); 1891 close (backend_fd);
1375 1892
1893#if EV_USE_IOCP
1894 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1895#endif
1376#if EV_USE_PORT 1896#if EV_USE_PORT
1377 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1897 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1378#endif 1898#endif
1379#if EV_USE_KQUEUE 1899#if EV_USE_KQUEUE
1380 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1900 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1395#if EV_IDLE_ENABLE 1915#if EV_IDLE_ENABLE
1396 array_free (idle, [i]); 1916 array_free (idle, [i]);
1397#endif 1917#endif
1398 } 1918 }
1399 1919
1400 ev_free (anfds); anfdmax = 0; 1920 ev_free (anfds); anfds = 0; anfdmax = 0;
1401 1921
1402 /* have to use the microsoft-never-gets-it-right macro */ 1922 /* have to use the microsoft-never-gets-it-right macro */
1923 array_free (rfeed, EMPTY);
1403 array_free (fdchange, EMPTY); 1924 array_free (fdchange, EMPTY);
1404 array_free (timer, EMPTY); 1925 array_free (timer, EMPTY);
1405#if EV_PERIODIC_ENABLE 1926#if EV_PERIODIC_ENABLE
1406 array_free (periodic, EMPTY); 1927 array_free (periodic, EMPTY);
1407#endif 1928#endif
1408#if EV_FORK_ENABLE 1929#if EV_FORK_ENABLE
1409 array_free (fork, EMPTY); 1930 array_free (fork, EMPTY);
1410#endif 1931#endif
1932#if EV_CLEANUP_ENABLE
1933 array_free (cleanup, EMPTY);
1934#endif
1411 array_free (prepare, EMPTY); 1935 array_free (prepare, EMPTY);
1412 array_free (check, EMPTY); 1936 array_free (check, EMPTY);
1413#if EV_ASYNC_ENABLE 1937#if EV_ASYNC_ENABLE
1414 array_free (async, EMPTY); 1938 array_free (async, EMPTY);
1415#endif 1939#endif
1416 1940
1417 backend = 0; 1941 backend = 0;
1942
1943#if EV_MULTIPLICITY
1944 if (ev_is_default_loop (EV_A))
1945#endif
1946 ev_default_loop_ptr = 0;
1947#if EV_MULTIPLICITY
1948 else
1949 ev_free (EV_A);
1950#endif
1418} 1951}
1419 1952
1420#if EV_USE_INOTIFY 1953#if EV_USE_INOTIFY
1421void inline_size infy_fork (EV_P); 1954inline_size void infy_fork (EV_P);
1422#endif 1955#endif
1423 1956
1424void inline_size 1957inline_size void
1425loop_fork (EV_P) 1958loop_fork (EV_P)
1426{ 1959{
1427#if EV_USE_PORT 1960#if EV_USE_PORT
1428 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1961 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1429#endif 1962#endif
… …
1435#endif 1968#endif
1436#if EV_USE_INOTIFY 1969#if EV_USE_INOTIFY
1437 infy_fork (EV_A); 1970 infy_fork (EV_A);
1438#endif 1971#endif
1439 1972
1440 if (ev_is_active (&pipeev)) 1973 if (ev_is_active (&pipe_w))
1441 { 1974 {
1442 /* this "locks" the handlers against writing to the pipe */ 1975 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1443 /* while we modify the fd vars */
1444 gotsig = 1;
1445#if EV_ASYNC_ENABLE
1446 gotasync = 1;
1447#endif
1448 1976
1449 ev_ref (EV_A); 1977 ev_ref (EV_A);
1450 ev_io_stop (EV_A_ &pipeev); 1978 ev_io_stop (EV_A_ &pipe_w);
1451 1979
1452#if EV_USE_EVENTFD 1980#if EV_USE_EVENTFD
1453 if (evfd >= 0) 1981 if (evfd >= 0)
1454 close (evfd); 1982 close (evfd);
1455#endif 1983#endif
1456 1984
1457 if (evpipe [0] >= 0) 1985 if (evpipe [0] >= 0)
1458 { 1986 {
1459 close (evpipe [0]); 1987 EV_WIN32_CLOSE_FD (evpipe [0]);
1460 close (evpipe [1]); 1988 EV_WIN32_CLOSE_FD (evpipe [1]);
1461 } 1989 }
1462 1990
1991#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1463 evpipe_init (EV_A); 1992 evpipe_init (EV_A);
1464 /* now iterate over everything, in case we missed something */ 1993 /* now iterate over everything, in case we missed something */
1465 pipecb (EV_A_ &pipeev, EV_READ); 1994 pipecb (EV_A_ &pipe_w, EV_READ);
1995#endif
1466 } 1996 }
1467 1997
1468 postfork = 0; 1998 postfork = 0;
1469} 1999}
1470 2000
1471#if EV_MULTIPLICITY 2001#if EV_MULTIPLICITY
1472 2002
1473struct ev_loop * 2003struct ev_loop *
1474ev_loop_new (unsigned int flags) 2004ev_loop_new (unsigned int flags)
1475{ 2005{
1476 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2006 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1477 2007
1478 memset (loop, 0, sizeof (struct ev_loop)); 2008 memset (EV_A, 0, sizeof (struct ev_loop));
1479
1480 loop_init (EV_A_ flags); 2009 loop_init (EV_A_ flags);
1481 2010
1482 if (ev_backend (EV_A)) 2011 if (ev_backend (EV_A))
1483 return loop; 2012 return EV_A;
1484 2013
2014 ev_free (EV_A);
1485 return 0; 2015 return 0;
1486} 2016}
1487 2017
1488void 2018#endif /* multiplicity */
1489ev_loop_destroy (EV_P)
1490{
1491 loop_destroy (EV_A);
1492 ev_free (loop);
1493}
1494
1495void
1496ev_loop_fork (EV_P)
1497{
1498 postfork = 1; /* must be in line with ev_default_fork */
1499}
1500 2019
1501#if EV_VERIFY 2020#if EV_VERIFY
1502static void noinline 2021static void noinline
1503verify_watcher (EV_P_ W w) 2022verify_watcher (EV_P_ W w)
1504{ 2023{
1505 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2024 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1506 2025
1507 if (w->pending) 2026 if (w->pending)
1508 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2027 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1509} 2028}
1510 2029
1511static void noinline 2030static void noinline
1512verify_heap (EV_P_ ANHE *heap, int N) 2031verify_heap (EV_P_ ANHE *heap, int N)
1513{ 2032{
1514 int i; 2033 int i;
1515 2034
1516 for (i = HEAP0; i < N + HEAP0; ++i) 2035 for (i = HEAP0; i < N + HEAP0; ++i)
1517 { 2036 {
1518 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 2037 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1519 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 2038 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1520 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 2039 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1521 2040
1522 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2041 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1523 } 2042 }
1524} 2043}
1525 2044
1526static void noinline 2045static void noinline
1527array_verify (EV_P_ W *ws, int cnt) 2046array_verify (EV_P_ W *ws, int cnt)
1528{ 2047{
1529 while (cnt--) 2048 while (cnt--)
1530 { 2049 {
1531 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2050 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1532 verify_watcher (EV_A_ ws [cnt]); 2051 verify_watcher (EV_A_ ws [cnt]);
1533 } 2052 }
1534} 2053}
1535#endif 2054#endif
1536 2055
2056#if EV_FEATURE_API
1537void 2057void
1538ev_loop_verify (EV_P) 2058ev_verify (EV_P)
1539{ 2059{
1540#if EV_VERIFY 2060#if EV_VERIFY
1541 int i; 2061 int i;
1542 WL w; 2062 WL w;
1543 2063
1544 assert (activecnt >= -1); 2064 assert (activecnt >= -1);
1545 2065
1546 assert (fdchangemax >= fdchangecnt); 2066 assert (fdchangemax >= fdchangecnt);
1547 for (i = 0; i < fdchangecnt; ++i) 2067 for (i = 0; i < fdchangecnt; ++i)
1548 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 2068 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1549 2069
1550 assert (anfdmax >= 0); 2070 assert (anfdmax >= 0);
1551 for (i = 0; i < anfdmax; ++i) 2071 for (i = 0; i < anfdmax; ++i)
1552 for (w = anfds [i].head; w; w = w->next) 2072 for (w = anfds [i].head; w; w = w->next)
1553 { 2073 {
1554 verify_watcher (EV_A_ (W)w); 2074 verify_watcher (EV_A_ (W)w);
1555 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 2075 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1556 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2076 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1557 } 2077 }
1558 2078
1559 assert (timermax >= timercnt); 2079 assert (timermax >= timercnt);
1560 verify_heap (EV_A_ timers, timercnt); 2080 verify_heap (EV_A_ timers, timercnt);
1561 2081
… …
1577#if EV_FORK_ENABLE 2097#if EV_FORK_ENABLE
1578 assert (forkmax >= forkcnt); 2098 assert (forkmax >= forkcnt);
1579 array_verify (EV_A_ (W *)forks, forkcnt); 2099 array_verify (EV_A_ (W *)forks, forkcnt);
1580#endif 2100#endif
1581 2101
2102#if EV_CLEANUP_ENABLE
2103 assert (cleanupmax >= cleanupcnt);
2104 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2105#endif
2106
1582#if EV_ASYNC_ENABLE 2107#if EV_ASYNC_ENABLE
1583 assert (asyncmax >= asynccnt); 2108 assert (asyncmax >= asynccnt);
1584 array_verify (EV_A_ (W *)asyncs, asynccnt); 2109 array_verify (EV_A_ (W *)asyncs, asynccnt);
1585#endif 2110#endif
1586 2111
2112#if EV_PREPARE_ENABLE
1587 assert (preparemax >= preparecnt); 2113 assert (preparemax >= preparecnt);
1588 array_verify (EV_A_ (W *)prepares, preparecnt); 2114 array_verify (EV_A_ (W *)prepares, preparecnt);
2115#endif
1589 2116
2117#if EV_CHECK_ENABLE
1590 assert (checkmax >= checkcnt); 2118 assert (checkmax >= checkcnt);
1591 array_verify (EV_A_ (W *)checks, checkcnt); 2119 array_verify (EV_A_ (W *)checks, checkcnt);
2120#endif
1592 2121
1593# if 0 2122# if 0
2123#if EV_CHILD_ENABLE
1594 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2124 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1595 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2125 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2126#endif
1596# endif 2127# endif
1597#endif 2128#endif
1598} 2129}
1599 2130#endif
1600#endif /* multiplicity */
1601 2131
1602#if EV_MULTIPLICITY 2132#if EV_MULTIPLICITY
1603struct ev_loop * 2133struct ev_loop *
1604ev_default_loop_init (unsigned int flags)
1605#else 2134#else
1606int 2135int
2136#endif
1607ev_default_loop (unsigned int flags) 2137ev_default_loop (unsigned int flags)
1608#endif
1609{ 2138{
1610 if (!ev_default_loop_ptr) 2139 if (!ev_default_loop_ptr)
1611 { 2140 {
1612#if EV_MULTIPLICITY 2141#if EV_MULTIPLICITY
1613 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2142 EV_P = ev_default_loop_ptr = &default_loop_struct;
1614#else 2143#else
1615 ev_default_loop_ptr = 1; 2144 ev_default_loop_ptr = 1;
1616#endif 2145#endif
1617 2146
1618 loop_init (EV_A_ flags); 2147 loop_init (EV_A_ flags);
1619 2148
1620 if (ev_backend (EV_A)) 2149 if (ev_backend (EV_A))
1621 { 2150 {
1622#ifndef _WIN32 2151#if EV_CHILD_ENABLE
1623 ev_signal_init (&childev, childcb, SIGCHLD); 2152 ev_signal_init (&childev, childcb, SIGCHLD);
1624 ev_set_priority (&childev, EV_MAXPRI); 2153 ev_set_priority (&childev, EV_MAXPRI);
1625 ev_signal_start (EV_A_ &childev); 2154 ev_signal_start (EV_A_ &childev);
1626 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2155 ev_unref (EV_A); /* child watcher should not keep loop alive */
1627#endif 2156#endif
… …
1632 2161
1633 return ev_default_loop_ptr; 2162 return ev_default_loop_ptr;
1634} 2163}
1635 2164
1636void 2165void
1637ev_default_destroy (void) 2166ev_loop_fork (EV_P)
1638{ 2167{
1639#if EV_MULTIPLICITY
1640 struct ev_loop *loop = ev_default_loop_ptr;
1641#endif
1642
1643#ifndef _WIN32
1644 ev_ref (EV_A); /* child watcher */
1645 ev_signal_stop (EV_A_ &childev);
1646#endif
1647
1648 loop_destroy (EV_A);
1649}
1650
1651void
1652ev_default_fork (void)
1653{
1654#if EV_MULTIPLICITY
1655 struct ev_loop *loop = ev_default_loop_ptr;
1656#endif
1657
1658 if (backend)
1659 postfork = 1; /* must be in line with ev_loop_fork */ 2168 postfork = 1; /* must be in line with ev_default_fork */
1660} 2169}
1661 2170
1662/*****************************************************************************/ 2171/*****************************************************************************/
1663 2172
1664void 2173void
1665ev_invoke (EV_P_ void *w, int revents) 2174ev_invoke (EV_P_ void *w, int revents)
1666{ 2175{
1667 EV_CB_INVOKE ((W)w, revents); 2176 EV_CB_INVOKE ((W)w, revents);
1668} 2177}
1669 2178
1670void inline_speed 2179unsigned int
1671call_pending (EV_P) 2180ev_pending_count (EV_P)
2181{
2182 int pri;
2183 unsigned int count = 0;
2184
2185 for (pri = NUMPRI; pri--; )
2186 count += pendingcnt [pri];
2187
2188 return count;
2189}
2190
2191void noinline
2192ev_invoke_pending (EV_P)
1672{ 2193{
1673 int pri; 2194 int pri;
1674 2195
1675 for (pri = NUMPRI; pri--; ) 2196 for (pri = NUMPRI; pri--; )
1676 while (pendingcnt [pri]) 2197 while (pendingcnt [pri])
1677 { 2198 {
1678 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2199 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1679 2200
1680 if (expect_true (p->w))
1681 {
1682 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1683
1684 p->w->pending = 0; 2201 p->w->pending = 0;
1685 EV_CB_INVOKE (p->w, p->events); 2202 EV_CB_INVOKE (p->w, p->events);
1686 EV_FREQUENT_CHECK; 2203 EV_FREQUENT_CHECK;
1687 }
1688 } 2204 }
1689} 2205}
1690 2206
1691#if EV_IDLE_ENABLE 2207#if EV_IDLE_ENABLE
1692void inline_size 2208/* make idle watchers pending. this handles the "call-idle */
2209/* only when higher priorities are idle" logic */
2210inline_size void
1693idle_reify (EV_P) 2211idle_reify (EV_P)
1694{ 2212{
1695 if (expect_false (idleall)) 2213 if (expect_false (idleall))
1696 { 2214 {
1697 int pri; 2215 int pri;
… …
1709 } 2227 }
1710 } 2228 }
1711} 2229}
1712#endif 2230#endif
1713 2231
1714void inline_size 2232/* make timers pending */
2233inline_size void
1715timers_reify (EV_P) 2234timers_reify (EV_P)
1716{ 2235{
1717 EV_FREQUENT_CHECK; 2236 EV_FREQUENT_CHECK;
1718 2237
1719 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2238 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1720 { 2239 {
1721 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2240 do
1722
1723 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1724
1725 /* first reschedule or stop timer */
1726 if (w->repeat)
1727 { 2241 {
2242 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2243
2244 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2245
2246 /* first reschedule or stop timer */
2247 if (w->repeat)
2248 {
1728 ev_at (w) += w->repeat; 2249 ev_at (w) += w->repeat;
1729 if (ev_at (w) < mn_now) 2250 if (ev_at (w) < mn_now)
1730 ev_at (w) = mn_now; 2251 ev_at (w) = mn_now;
1731 2252
1732 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2253 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1733 2254
1734 ANHE_at_cache (timers [HEAP0]); 2255 ANHE_at_cache (timers [HEAP0]);
1735 downheap (timers, timercnt, HEAP0); 2256 downheap (timers, timercnt, HEAP0);
2257 }
2258 else
2259 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2260
2261 EV_FREQUENT_CHECK;
2262 feed_reverse (EV_A_ (W)w);
1736 } 2263 }
1737 else 2264 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1738 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1739 2265
1740 EV_FREQUENT_CHECK; 2266 feed_reverse_done (EV_A_ EV_TIMER);
1741 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1742 } 2267 }
1743} 2268}
1744 2269
1745#if EV_PERIODIC_ENABLE 2270#if EV_PERIODIC_ENABLE
1746void inline_size 2271
2272static void noinline
2273periodic_recalc (EV_P_ ev_periodic *w)
2274{
2275 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2276 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2277
2278 /* the above almost always errs on the low side */
2279 while (at <= ev_rt_now)
2280 {
2281 ev_tstamp nat = at + w->interval;
2282
2283 /* when resolution fails us, we use ev_rt_now */
2284 if (expect_false (nat == at))
2285 {
2286 at = ev_rt_now;
2287 break;
2288 }
2289
2290 at = nat;
2291 }
2292
2293 ev_at (w) = at;
2294}
2295
2296/* make periodics pending */
2297inline_size void
1747periodics_reify (EV_P) 2298periodics_reify (EV_P)
1748{ 2299{
1749 EV_FREQUENT_CHECK; 2300 EV_FREQUENT_CHECK;
1750 2301
1751 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2302 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1752 { 2303 {
1753 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2304 int feed_count = 0;
1754 2305
1755 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2306 do
1756
1757 /* first reschedule or stop timer */
1758 if (w->reschedule_cb)
1759 { 2307 {
2308 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2309
2310 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2311
2312 /* first reschedule or stop timer */
2313 if (w->reschedule_cb)
2314 {
1760 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2315 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1761 2316
1762 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2317 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1763 2318
1764 ANHE_at_cache (periodics [HEAP0]); 2319 ANHE_at_cache (periodics [HEAP0]);
1765 downheap (periodics, periodiccnt, HEAP0); 2320 downheap (periodics, periodiccnt, HEAP0);
2321 }
2322 else if (w->interval)
2323 {
2324 periodic_recalc (EV_A_ w);
2325 ANHE_at_cache (periodics [HEAP0]);
2326 downheap (periodics, periodiccnt, HEAP0);
2327 }
2328 else
2329 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2330
2331 EV_FREQUENT_CHECK;
2332 feed_reverse (EV_A_ (W)w);
1766 } 2333 }
1767 else if (w->interval) 2334 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1768 {
1769 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1770 /* if next trigger time is not sufficiently in the future, put it there */
1771 /* this might happen because of floating point inexactness */
1772 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1773 {
1774 ev_at (w) += w->interval;
1775 2335
1776 /* if interval is unreasonably low we might still have a time in the past */
1777 /* so correct this. this will make the periodic very inexact, but the user */
1778 /* has effectively asked to get triggered more often than possible */
1779 if (ev_at (w) < ev_rt_now)
1780 ev_at (w) = ev_rt_now;
1781 }
1782
1783 ANHE_at_cache (periodics [HEAP0]);
1784 downheap (periodics, periodiccnt, HEAP0);
1785 }
1786 else
1787 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1788
1789 EV_FREQUENT_CHECK;
1790 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2336 feed_reverse_done (EV_A_ EV_PERIODIC);
1791 } 2337 }
1792} 2338}
1793 2339
2340/* simply recalculate all periodics */
2341/* TODO: maybe ensure that at least one event happens when jumping forward? */
1794static void noinline 2342static void noinline
1795periodics_reschedule (EV_P) 2343periodics_reschedule (EV_P)
1796{ 2344{
1797 int i; 2345 int i;
1798 2346
… …
1802 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2350 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1803 2351
1804 if (w->reschedule_cb) 2352 if (w->reschedule_cb)
1805 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2353 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1806 else if (w->interval) 2354 else if (w->interval)
1807 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2355 periodic_recalc (EV_A_ w);
1808 2356
1809 ANHE_at_cache (periodics [i]); 2357 ANHE_at_cache (periodics [i]);
1810 } 2358 }
1811 2359
1812 reheap (periodics, periodiccnt); 2360 reheap (periodics, periodiccnt);
1813} 2361}
1814#endif 2362#endif
1815 2363
1816void inline_speed 2364/* adjust all timers by a given offset */
2365static void noinline
2366timers_reschedule (EV_P_ ev_tstamp adjust)
2367{
2368 int i;
2369
2370 for (i = 0; i < timercnt; ++i)
2371 {
2372 ANHE *he = timers + i + HEAP0;
2373 ANHE_w (*he)->at += adjust;
2374 ANHE_at_cache (*he);
2375 }
2376}
2377
2378/* fetch new monotonic and realtime times from the kernel */
2379/* also detect if there was a timejump, and act accordingly */
2380inline_speed void
1817time_update (EV_P_ ev_tstamp max_block) 2381time_update (EV_P_ ev_tstamp max_block)
1818{ 2382{
1819 int i;
1820
1821#if EV_USE_MONOTONIC 2383#if EV_USE_MONOTONIC
1822 if (expect_true (have_monotonic)) 2384 if (expect_true (have_monotonic))
1823 { 2385 {
2386 int i;
1824 ev_tstamp odiff = rtmn_diff; 2387 ev_tstamp odiff = rtmn_diff;
1825 2388
1826 mn_now = get_clock (); 2389 mn_now = get_clock ();
1827 2390
1828 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2391 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1844 * doesn't hurt either as we only do this on time-jumps or 2407 * doesn't hurt either as we only do this on time-jumps or
1845 * in the unlikely event of having been preempted here. 2408 * in the unlikely event of having been preempted here.
1846 */ 2409 */
1847 for (i = 4; --i; ) 2410 for (i = 4; --i; )
1848 { 2411 {
2412 ev_tstamp diff;
1849 rtmn_diff = ev_rt_now - mn_now; 2413 rtmn_diff = ev_rt_now - mn_now;
1850 2414
2415 diff = odiff - rtmn_diff;
2416
1851 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2417 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1852 return; /* all is well */ 2418 return; /* all is well */
1853 2419
1854 ev_rt_now = ev_time (); 2420 ev_rt_now = ev_time ();
1855 mn_now = get_clock (); 2421 mn_now = get_clock ();
1856 now_floor = mn_now; 2422 now_floor = mn_now;
1857 } 2423 }
1858 2424
2425 /* no timer adjustment, as the monotonic clock doesn't jump */
2426 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1859# if EV_PERIODIC_ENABLE 2427# if EV_PERIODIC_ENABLE
1860 periodics_reschedule (EV_A); 2428 periodics_reschedule (EV_A);
1861# endif 2429# endif
1862 /* no timer adjustment, as the monotonic clock doesn't jump */
1863 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1864 } 2430 }
1865 else 2431 else
1866#endif 2432#endif
1867 { 2433 {
1868 ev_rt_now = ev_time (); 2434 ev_rt_now = ev_time ();
1869 2435
1870 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2436 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1871 { 2437 {
2438 /* adjust timers. this is easy, as the offset is the same for all of them */
2439 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1872#if EV_PERIODIC_ENABLE 2440#if EV_PERIODIC_ENABLE
1873 periodics_reschedule (EV_A); 2441 periodics_reschedule (EV_A);
1874#endif 2442#endif
1875 /* adjust timers. this is easy, as the offset is the same for all of them */
1876 for (i = 0; i < timercnt; ++i)
1877 {
1878 ANHE *he = timers + i + HEAP0;
1879 ANHE_w (*he)->at += ev_rt_now - mn_now;
1880 ANHE_at_cache (*he);
1881 }
1882 } 2443 }
1883 2444
1884 mn_now = ev_rt_now; 2445 mn_now = ev_rt_now;
1885 } 2446 }
1886} 2447}
1887 2448
1888void 2449void
1889ev_ref (EV_P)
1890{
1891 ++activecnt;
1892}
1893
1894void
1895ev_unref (EV_P)
1896{
1897 --activecnt;
1898}
1899
1900void
1901ev_now_update (EV_P)
1902{
1903 time_update (EV_A_ 1e100);
1904}
1905
1906static int loop_done;
1907
1908void
1909ev_loop (EV_P_ int flags) 2450ev_run (EV_P_ int flags)
1910{ 2451{
2452#if EV_FEATURE_API
2453 ++loop_depth;
2454#endif
2455
2456 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2457
1911 loop_done = EVUNLOOP_CANCEL; 2458 loop_done = EVBREAK_CANCEL;
1912 2459
1913 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2460 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1914 2461
1915 do 2462 do
1916 { 2463 {
1917#if EV_VERIFY >= 2 2464#if EV_VERIFY >= 2
1918 ev_loop_verify (EV_A); 2465 ev_verify (EV_A);
1919#endif 2466#endif
1920 2467
1921#ifndef _WIN32 2468#ifndef _WIN32
1922 if (expect_false (curpid)) /* penalise the forking check even more */ 2469 if (expect_false (curpid)) /* penalise the forking check even more */
1923 if (expect_false (getpid () != curpid)) 2470 if (expect_false (getpid () != curpid))
… …
1931 /* we might have forked, so queue fork handlers */ 2478 /* we might have forked, so queue fork handlers */
1932 if (expect_false (postfork)) 2479 if (expect_false (postfork))
1933 if (forkcnt) 2480 if (forkcnt)
1934 { 2481 {
1935 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2482 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1936 call_pending (EV_A); 2483 EV_INVOKE_PENDING;
1937 } 2484 }
1938#endif 2485#endif
1939 2486
2487#if EV_PREPARE_ENABLE
1940 /* queue prepare watchers (and execute them) */ 2488 /* queue prepare watchers (and execute them) */
1941 if (expect_false (preparecnt)) 2489 if (expect_false (preparecnt))
1942 { 2490 {
1943 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2491 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1944 call_pending (EV_A); 2492 EV_INVOKE_PENDING;
1945 } 2493 }
2494#endif
1946 2495
1947 if (expect_false (!activecnt)) 2496 if (expect_false (loop_done))
1948 break; 2497 break;
1949 2498
1950 /* we might have forked, so reify kernel state if necessary */ 2499 /* we might have forked, so reify kernel state if necessary */
1951 if (expect_false (postfork)) 2500 if (expect_false (postfork))
1952 loop_fork (EV_A); 2501 loop_fork (EV_A);
… …
1957 /* calculate blocking time */ 2506 /* calculate blocking time */
1958 { 2507 {
1959 ev_tstamp waittime = 0.; 2508 ev_tstamp waittime = 0.;
1960 ev_tstamp sleeptime = 0.; 2509 ev_tstamp sleeptime = 0.;
1961 2510
2511 /* remember old timestamp for io_blocktime calculation */
2512 ev_tstamp prev_mn_now = mn_now;
2513
2514 /* update time to cancel out callback processing overhead */
2515 time_update (EV_A_ 1e100);
2516
2517 /* from now on, we want a pipe-wake-up */
2518 pipe_write_wanted = 1;
2519
1962 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2520 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1963 { 2521 {
1964 /* update time to cancel out callback processing overhead */
1965 time_update (EV_A_ 1e100);
1966
1967 waittime = MAX_BLOCKTIME; 2522 waittime = MAX_BLOCKTIME;
1968 2523
1969 if (timercnt) 2524 if (timercnt)
1970 { 2525 {
1971 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2526 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1972 if (waittime > to) waittime = to; 2527 if (waittime > to) waittime = to;
1973 } 2528 }
1974 2529
1975#if EV_PERIODIC_ENABLE 2530#if EV_PERIODIC_ENABLE
1976 if (periodiccnt) 2531 if (periodiccnt)
1977 { 2532 {
1978 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2533 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1979 if (waittime > to) waittime = to; 2534 if (waittime > to) waittime = to;
1980 } 2535 }
1981#endif 2536#endif
1982 2537
2538 /* don't let timeouts decrease the waittime below timeout_blocktime */
1983 if (expect_false (waittime < timeout_blocktime)) 2539 if (expect_false (waittime < timeout_blocktime))
1984 waittime = timeout_blocktime; 2540 waittime = timeout_blocktime;
1985 2541
1986 sleeptime = waittime - backend_fudge; 2542 /* at this point, we NEED to wait, so we have to ensure */
2543 /* to pass a minimum nonzero value to the backend */
2544 if (expect_false (waittime < backend_mintime))
2545 waittime = backend_mintime;
1987 2546
2547 /* extra check because io_blocktime is commonly 0 */
1988 if (expect_true (sleeptime > io_blocktime)) 2548 if (expect_false (io_blocktime))
1989 sleeptime = io_blocktime;
1990
1991 if (sleeptime)
1992 { 2549 {
2550 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2551
2552 if (sleeptime > waittime - backend_mintime)
2553 sleeptime = waittime - backend_mintime;
2554
2555 if (expect_true (sleeptime > 0.))
2556 {
1993 ev_sleep (sleeptime); 2557 ev_sleep (sleeptime);
1994 waittime -= sleeptime; 2558 waittime -= sleeptime;
2559 }
1995 } 2560 }
1996 } 2561 }
1997 2562
2563#if EV_FEATURE_API
1998 ++loop_count; 2564 ++loop_count;
2565#endif
2566 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1999 backend_poll (EV_A_ waittime); 2567 backend_poll (EV_A_ waittime);
2568 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2569
2570 pipe_write_wanted = 0;
2571
2572 if (pipe_write_skipped)
2573 {
2574 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2575 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2576 }
2577
2000 2578
2001 /* update ev_rt_now, do magic */ 2579 /* update ev_rt_now, do magic */
2002 time_update (EV_A_ waittime + sleeptime); 2580 time_update (EV_A_ waittime + sleeptime);
2003 } 2581 }
2004 2582
… …
2011#if EV_IDLE_ENABLE 2589#if EV_IDLE_ENABLE
2012 /* queue idle watchers unless other events are pending */ 2590 /* queue idle watchers unless other events are pending */
2013 idle_reify (EV_A); 2591 idle_reify (EV_A);
2014#endif 2592#endif
2015 2593
2594#if EV_CHECK_ENABLE
2016 /* queue check watchers, to be executed first */ 2595 /* queue check watchers, to be executed first */
2017 if (expect_false (checkcnt)) 2596 if (expect_false (checkcnt))
2018 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2597 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2598#endif
2019 2599
2020 call_pending (EV_A); 2600 EV_INVOKE_PENDING;
2021 } 2601 }
2022 while (expect_true ( 2602 while (expect_true (
2023 activecnt 2603 activecnt
2024 && !loop_done 2604 && !loop_done
2025 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2605 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2026 )); 2606 ));
2027 2607
2028 if (loop_done == EVUNLOOP_ONE) 2608 if (loop_done == EVBREAK_ONE)
2029 loop_done = EVUNLOOP_CANCEL; 2609 loop_done = EVBREAK_CANCEL;
2030}
2031 2610
2611#if EV_FEATURE_API
2612 --loop_depth;
2613#endif
2614}
2615
2032void 2616void
2033ev_unloop (EV_P_ int how) 2617ev_break (EV_P_ int how)
2034{ 2618{
2035 loop_done = how; 2619 loop_done = how;
2036} 2620}
2037 2621
2622void
2623ev_ref (EV_P)
2624{
2625 ++activecnt;
2626}
2627
2628void
2629ev_unref (EV_P)
2630{
2631 --activecnt;
2632}
2633
2634void
2635ev_now_update (EV_P)
2636{
2637 time_update (EV_A_ 1e100);
2638}
2639
2640void
2641ev_suspend (EV_P)
2642{
2643 ev_now_update (EV_A);
2644}
2645
2646void
2647ev_resume (EV_P)
2648{
2649 ev_tstamp mn_prev = mn_now;
2650
2651 ev_now_update (EV_A);
2652 timers_reschedule (EV_A_ mn_now - mn_prev);
2653#if EV_PERIODIC_ENABLE
2654 /* TODO: really do this? */
2655 periodics_reschedule (EV_A);
2656#endif
2657}
2658
2038/*****************************************************************************/ 2659/*****************************************************************************/
2660/* singly-linked list management, used when the expected list length is short */
2039 2661
2040void inline_size 2662inline_size void
2041wlist_add (WL *head, WL elem) 2663wlist_add (WL *head, WL elem)
2042{ 2664{
2043 elem->next = *head; 2665 elem->next = *head;
2044 *head = elem; 2666 *head = elem;
2045} 2667}
2046 2668
2047void inline_size 2669inline_size void
2048wlist_del (WL *head, WL elem) 2670wlist_del (WL *head, WL elem)
2049{ 2671{
2050 while (*head) 2672 while (*head)
2051 { 2673 {
2052 if (*head == elem) 2674 if (expect_true (*head == elem))
2053 { 2675 {
2054 *head = elem->next; 2676 *head = elem->next;
2055 return; 2677 break;
2056 } 2678 }
2057 2679
2058 head = &(*head)->next; 2680 head = &(*head)->next;
2059 } 2681 }
2060} 2682}
2061 2683
2062void inline_speed 2684/* internal, faster, version of ev_clear_pending */
2685inline_speed void
2063clear_pending (EV_P_ W w) 2686clear_pending (EV_P_ W w)
2064{ 2687{
2065 if (w->pending) 2688 if (w->pending)
2066 { 2689 {
2067 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2690 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2068 w->pending = 0; 2691 w->pending = 0;
2069 } 2692 }
2070} 2693}
2071 2694
2072int 2695int
… …
2076 int pending = w_->pending; 2699 int pending = w_->pending;
2077 2700
2078 if (expect_true (pending)) 2701 if (expect_true (pending))
2079 { 2702 {
2080 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2703 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2704 p->w = (W)&pending_w;
2081 w_->pending = 0; 2705 w_->pending = 0;
2082 p->w = 0;
2083 return p->events; 2706 return p->events;
2084 } 2707 }
2085 else 2708 else
2086 return 0; 2709 return 0;
2087} 2710}
2088 2711
2089void inline_size 2712inline_size void
2090pri_adjust (EV_P_ W w) 2713pri_adjust (EV_P_ W w)
2091{ 2714{
2092 int pri = w->priority; 2715 int pri = ev_priority (w);
2093 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2716 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2094 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2717 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2095 w->priority = pri; 2718 ev_set_priority (w, pri);
2096} 2719}
2097 2720
2098void inline_speed 2721inline_speed void
2099ev_start (EV_P_ W w, int active) 2722ev_start (EV_P_ W w, int active)
2100{ 2723{
2101 pri_adjust (EV_A_ w); 2724 pri_adjust (EV_A_ w);
2102 w->active = active; 2725 w->active = active;
2103 ev_ref (EV_A); 2726 ev_ref (EV_A);
2104} 2727}
2105 2728
2106void inline_size 2729inline_size void
2107ev_stop (EV_P_ W w) 2730ev_stop (EV_P_ W w)
2108{ 2731{
2109 ev_unref (EV_A); 2732 ev_unref (EV_A);
2110 w->active = 0; 2733 w->active = 0;
2111} 2734}
… …
2118 int fd = w->fd; 2741 int fd = w->fd;
2119 2742
2120 if (expect_false (ev_is_active (w))) 2743 if (expect_false (ev_is_active (w)))
2121 return; 2744 return;
2122 2745
2123 assert (("ev_io_start called with negative fd", fd >= 0)); 2746 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2124 assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); 2747 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2125 2748
2126 EV_FREQUENT_CHECK; 2749 EV_FREQUENT_CHECK;
2127 2750
2128 ev_start (EV_A_ (W)w, 1); 2751 ev_start (EV_A_ (W)w, 1);
2129 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2752 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2130 wlist_add (&anfds[fd].head, (WL)w); 2753 wlist_add (&anfds[fd].head, (WL)w);
2131 2754
2132 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2755 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2133 w->events &= ~EV_IOFDSET; 2756 w->events &= ~EV__IOFDSET;
2134 2757
2135 EV_FREQUENT_CHECK; 2758 EV_FREQUENT_CHECK;
2136} 2759}
2137 2760
2138void noinline 2761void noinline
… …
2140{ 2763{
2141 clear_pending (EV_A_ (W)w); 2764 clear_pending (EV_A_ (W)w);
2142 if (expect_false (!ev_is_active (w))) 2765 if (expect_false (!ev_is_active (w)))
2143 return; 2766 return;
2144 2767
2145 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2768 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2146 2769
2147 EV_FREQUENT_CHECK; 2770 EV_FREQUENT_CHECK;
2148 2771
2149 wlist_del (&anfds[w->fd].head, (WL)w); 2772 wlist_del (&anfds[w->fd].head, (WL)w);
2150 ev_stop (EV_A_ (W)w); 2773 ev_stop (EV_A_ (W)w);
2151 2774
2152 fd_change (EV_A_ w->fd, 1); 2775 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2153 2776
2154 EV_FREQUENT_CHECK; 2777 EV_FREQUENT_CHECK;
2155} 2778}
2156 2779
2157void noinline 2780void noinline
… …
2160 if (expect_false (ev_is_active (w))) 2783 if (expect_false (ev_is_active (w)))
2161 return; 2784 return;
2162 2785
2163 ev_at (w) += mn_now; 2786 ev_at (w) += mn_now;
2164 2787
2165 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2788 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2166 2789
2167 EV_FREQUENT_CHECK; 2790 EV_FREQUENT_CHECK;
2168 2791
2169 ++timercnt; 2792 ++timercnt;
2170 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2793 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2173 ANHE_at_cache (timers [ev_active (w)]); 2796 ANHE_at_cache (timers [ev_active (w)]);
2174 upheap (timers, ev_active (w)); 2797 upheap (timers, ev_active (w));
2175 2798
2176 EV_FREQUENT_CHECK; 2799 EV_FREQUENT_CHECK;
2177 2800
2178 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2801 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2179} 2802}
2180 2803
2181void noinline 2804void noinline
2182ev_timer_stop (EV_P_ ev_timer *w) 2805ev_timer_stop (EV_P_ ev_timer *w)
2183{ 2806{
… …
2188 EV_FREQUENT_CHECK; 2811 EV_FREQUENT_CHECK;
2189 2812
2190 { 2813 {
2191 int active = ev_active (w); 2814 int active = ev_active (w);
2192 2815
2193 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2816 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2194 2817
2195 --timercnt; 2818 --timercnt;
2196 2819
2197 if (expect_true (active < timercnt + HEAP0)) 2820 if (expect_true (active < timercnt + HEAP0))
2198 { 2821 {
2199 timers [active] = timers [timercnt + HEAP0]; 2822 timers [active] = timers [timercnt + HEAP0];
2200 adjustheap (timers, timercnt, active); 2823 adjustheap (timers, timercnt, active);
2201 } 2824 }
2202 } 2825 }
2203 2826
2204 EV_FREQUENT_CHECK;
2205
2206 ev_at (w) -= mn_now; 2827 ev_at (w) -= mn_now;
2207 2828
2208 ev_stop (EV_A_ (W)w); 2829 ev_stop (EV_A_ (W)w);
2830
2831 EV_FREQUENT_CHECK;
2209} 2832}
2210 2833
2211void noinline 2834void noinline
2212ev_timer_again (EV_P_ ev_timer *w) 2835ev_timer_again (EV_P_ ev_timer *w)
2213{ 2836{
… …
2231 } 2854 }
2232 2855
2233 EV_FREQUENT_CHECK; 2856 EV_FREQUENT_CHECK;
2234} 2857}
2235 2858
2859ev_tstamp
2860ev_timer_remaining (EV_P_ ev_timer *w)
2861{
2862 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2863}
2864
2236#if EV_PERIODIC_ENABLE 2865#if EV_PERIODIC_ENABLE
2237void noinline 2866void noinline
2238ev_periodic_start (EV_P_ ev_periodic *w) 2867ev_periodic_start (EV_P_ ev_periodic *w)
2239{ 2868{
2240 if (expect_false (ev_is_active (w))) 2869 if (expect_false (ev_is_active (w)))
… …
2242 2871
2243 if (w->reschedule_cb) 2872 if (w->reschedule_cb)
2244 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2873 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2245 else if (w->interval) 2874 else if (w->interval)
2246 { 2875 {
2247 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2876 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2248 /* this formula differs from the one in periodic_reify because we do not always round up */ 2877 periodic_recalc (EV_A_ w);
2249 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2250 } 2878 }
2251 else 2879 else
2252 ev_at (w) = w->offset; 2880 ev_at (w) = w->offset;
2253 2881
2254 EV_FREQUENT_CHECK; 2882 EV_FREQUENT_CHECK;
… …
2260 ANHE_at_cache (periodics [ev_active (w)]); 2888 ANHE_at_cache (periodics [ev_active (w)]);
2261 upheap (periodics, ev_active (w)); 2889 upheap (periodics, ev_active (w));
2262 2890
2263 EV_FREQUENT_CHECK; 2891 EV_FREQUENT_CHECK;
2264 2892
2265 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2893 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2266} 2894}
2267 2895
2268void noinline 2896void noinline
2269ev_periodic_stop (EV_P_ ev_periodic *w) 2897ev_periodic_stop (EV_P_ ev_periodic *w)
2270{ 2898{
… …
2275 EV_FREQUENT_CHECK; 2903 EV_FREQUENT_CHECK;
2276 2904
2277 { 2905 {
2278 int active = ev_active (w); 2906 int active = ev_active (w);
2279 2907
2280 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2908 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2281 2909
2282 --periodiccnt; 2910 --periodiccnt;
2283 2911
2284 if (expect_true (active < periodiccnt + HEAP0)) 2912 if (expect_true (active < periodiccnt + HEAP0))
2285 { 2913 {
2286 periodics [active] = periodics [periodiccnt + HEAP0]; 2914 periodics [active] = periodics [periodiccnt + HEAP0];
2287 adjustheap (periodics, periodiccnt, active); 2915 adjustheap (periodics, periodiccnt, active);
2288 } 2916 }
2289 } 2917 }
2290 2918
2291 EV_FREQUENT_CHECK;
2292
2293 ev_stop (EV_A_ (W)w); 2919 ev_stop (EV_A_ (W)w);
2920
2921 EV_FREQUENT_CHECK;
2294} 2922}
2295 2923
2296void noinline 2924void noinline
2297ev_periodic_again (EV_P_ ev_periodic *w) 2925ev_periodic_again (EV_P_ ev_periodic *w)
2298{ 2926{
… …
2304 2932
2305#ifndef SA_RESTART 2933#ifndef SA_RESTART
2306# define SA_RESTART 0 2934# define SA_RESTART 0
2307#endif 2935#endif
2308 2936
2937#if EV_SIGNAL_ENABLE
2938
2309void noinline 2939void noinline
2310ev_signal_start (EV_P_ ev_signal *w) 2940ev_signal_start (EV_P_ ev_signal *w)
2311{ 2941{
2312#if EV_MULTIPLICITY
2313 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2314#endif
2315 if (expect_false (ev_is_active (w))) 2942 if (expect_false (ev_is_active (w)))
2316 return; 2943 return;
2317 2944
2318 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2945 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2319 2946
2320 evpipe_init (EV_A); 2947#if EV_MULTIPLICITY
2948 assert (("libev: a signal must not be attached to two different loops",
2949 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2321 2950
2322 EV_FREQUENT_CHECK; 2951 signals [w->signum - 1].loop = EV_A;
2952#endif
2323 2953
2954 EV_FREQUENT_CHECK;
2955
2956#if EV_USE_SIGNALFD
2957 if (sigfd == -2)
2324 { 2958 {
2325#ifndef _WIN32 2959 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2326 sigset_t full, prev; 2960 if (sigfd < 0 && errno == EINVAL)
2327 sigfillset (&full); 2961 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2328 sigprocmask (SIG_SETMASK, &full, &prev);
2329#endif
2330 2962
2331 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2963 if (sigfd >= 0)
2964 {
2965 fd_intern (sigfd); /* doing it twice will not hurt */
2332 2966
2333#ifndef _WIN32 2967 sigemptyset (&sigfd_set);
2334 sigprocmask (SIG_SETMASK, &prev, 0); 2968
2335#endif 2969 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2970 ev_set_priority (&sigfd_w, EV_MAXPRI);
2971 ev_io_start (EV_A_ &sigfd_w);
2972 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2973 }
2336 } 2974 }
2975
2976 if (sigfd >= 0)
2977 {
2978 /* TODO: check .head */
2979 sigaddset (&sigfd_set, w->signum);
2980 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2981
2982 signalfd (sigfd, &sigfd_set, 0);
2983 }
2984#endif
2337 2985
2338 ev_start (EV_A_ (W)w, 1); 2986 ev_start (EV_A_ (W)w, 1);
2339 wlist_add (&signals [w->signum - 1].head, (WL)w); 2987 wlist_add (&signals [w->signum - 1].head, (WL)w);
2340 2988
2341 if (!((WL)w)->next) 2989 if (!((WL)w)->next)
2990# if EV_USE_SIGNALFD
2991 if (sigfd < 0) /*TODO*/
2992# endif
2342 { 2993 {
2343#if _WIN32 2994# ifdef _WIN32
2995 evpipe_init (EV_A);
2996
2344 signal (w->signum, ev_sighandler); 2997 signal (w->signum, ev_sighandler);
2345#else 2998# else
2346 struct sigaction sa; 2999 struct sigaction sa;
3000
3001 evpipe_init (EV_A);
3002
2347 sa.sa_handler = ev_sighandler; 3003 sa.sa_handler = ev_sighandler;
2348 sigfillset (&sa.sa_mask); 3004 sigfillset (&sa.sa_mask);
2349 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3005 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2350 sigaction (w->signum, &sa, 0); 3006 sigaction (w->signum, &sa, 0);
3007
3008 if (origflags & EVFLAG_NOSIGMASK)
3009 {
3010 sigemptyset (&sa.sa_mask);
3011 sigaddset (&sa.sa_mask, w->signum);
3012 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3013 }
2351#endif 3014#endif
2352 } 3015 }
2353 3016
2354 EV_FREQUENT_CHECK; 3017 EV_FREQUENT_CHECK;
2355} 3018}
2356 3019
2357void noinline 3020void noinline
… …
2365 3028
2366 wlist_del (&signals [w->signum - 1].head, (WL)w); 3029 wlist_del (&signals [w->signum - 1].head, (WL)w);
2367 ev_stop (EV_A_ (W)w); 3030 ev_stop (EV_A_ (W)w);
2368 3031
2369 if (!signals [w->signum - 1].head) 3032 if (!signals [w->signum - 1].head)
3033 {
3034#if EV_MULTIPLICITY
3035 signals [w->signum - 1].loop = 0; /* unattach from signal */
3036#endif
3037#if EV_USE_SIGNALFD
3038 if (sigfd >= 0)
3039 {
3040 sigset_t ss;
3041
3042 sigemptyset (&ss);
3043 sigaddset (&ss, w->signum);
3044 sigdelset (&sigfd_set, w->signum);
3045
3046 signalfd (sigfd, &sigfd_set, 0);
3047 sigprocmask (SIG_UNBLOCK, &ss, 0);
3048 }
3049 else
3050#endif
2370 signal (w->signum, SIG_DFL); 3051 signal (w->signum, SIG_DFL);
3052 }
2371 3053
2372 EV_FREQUENT_CHECK; 3054 EV_FREQUENT_CHECK;
2373} 3055}
3056
3057#endif
3058
3059#if EV_CHILD_ENABLE
2374 3060
2375void 3061void
2376ev_child_start (EV_P_ ev_child *w) 3062ev_child_start (EV_P_ ev_child *w)
2377{ 3063{
2378#if EV_MULTIPLICITY 3064#if EV_MULTIPLICITY
2379 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3065 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2380#endif 3066#endif
2381 if (expect_false (ev_is_active (w))) 3067 if (expect_false (ev_is_active (w)))
2382 return; 3068 return;
2383 3069
2384 EV_FREQUENT_CHECK; 3070 EV_FREQUENT_CHECK;
2385 3071
2386 ev_start (EV_A_ (W)w, 1); 3072 ev_start (EV_A_ (W)w, 1);
2387 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3073 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2388 3074
2389 EV_FREQUENT_CHECK; 3075 EV_FREQUENT_CHECK;
2390} 3076}
2391 3077
2392void 3078void
… …
2396 if (expect_false (!ev_is_active (w))) 3082 if (expect_false (!ev_is_active (w)))
2397 return; 3083 return;
2398 3084
2399 EV_FREQUENT_CHECK; 3085 EV_FREQUENT_CHECK;
2400 3086
2401 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3087 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2402 ev_stop (EV_A_ (W)w); 3088 ev_stop (EV_A_ (W)w);
2403 3089
2404 EV_FREQUENT_CHECK; 3090 EV_FREQUENT_CHECK;
2405} 3091}
3092
3093#endif
2406 3094
2407#if EV_STAT_ENABLE 3095#if EV_STAT_ENABLE
2408 3096
2409# ifdef _WIN32 3097# ifdef _WIN32
2410# undef lstat 3098# undef lstat
2411# define lstat(a,b) _stati64 (a,b) 3099# define lstat(a,b) _stati64 (a,b)
2412# endif 3100# endif
2413 3101
2414#define DEF_STAT_INTERVAL 5.0074891 3102#define DEF_STAT_INTERVAL 5.0074891
3103#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2415#define MIN_STAT_INTERVAL 0.1074891 3104#define MIN_STAT_INTERVAL 0.1074891
2416 3105
2417static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3106static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2418 3107
2419#if EV_USE_INOTIFY 3108#if EV_USE_INOTIFY
2420# define EV_INOTIFY_BUFSIZE 8192 3109
3110/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3111# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2421 3112
2422static void noinline 3113static void noinline
2423infy_add (EV_P_ ev_stat *w) 3114infy_add (EV_P_ ev_stat *w)
2424{ 3115{
2425 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); 3116 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);
2426 3117
2427 if (w->wd < 0) 3118 if (w->wd >= 0)
3119 {
3120 struct statfs sfs;
3121
3122 /* now local changes will be tracked by inotify, but remote changes won't */
3123 /* unless the filesystem is known to be local, we therefore still poll */
3124 /* also do poll on <2.6.25, but with normal frequency */
3125
3126 if (!fs_2625)
3127 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3128 else if (!statfs (w->path, &sfs)
3129 && (sfs.f_type == 0x1373 /* devfs */
3130 || sfs.f_type == 0xEF53 /* ext2/3 */
3131 || sfs.f_type == 0x3153464a /* jfs */
3132 || sfs.f_type == 0x52654973 /* reiser3 */
3133 || sfs.f_type == 0x01021994 /* tempfs */
3134 || sfs.f_type == 0x58465342 /* xfs */))
3135 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3136 else
3137 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2428 { 3138 }
2429 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3139 else
3140 {
3141 /* can't use inotify, continue to stat */
3142 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2430 3143
2431 /* monitor some parent directory for speedup hints */ 3144 /* if path is not there, monitor some parent directory for speedup hints */
2432 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3145 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2433 /* but an efficiency issue only */ 3146 /* but an efficiency issue only */
2434 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3147 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2435 { 3148 {
2436 char path [4096]; 3149 char path [4096];
2437 strcpy (path, w->path); 3150 strcpy (path, w->path);
… …
2441 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3154 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2442 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3155 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2443 3156
2444 char *pend = strrchr (path, '/'); 3157 char *pend = strrchr (path, '/');
2445 3158
2446 if (!pend) 3159 if (!pend || pend == path)
2447 break; /* whoops, no '/', complain to your admin */ 3160 break;
2448 3161
2449 *pend = 0; 3162 *pend = 0;
2450 w->wd = inotify_add_watch (fs_fd, path, mask); 3163 w->wd = inotify_add_watch (fs_fd, path, mask);
2451 } 3164 }
2452 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3165 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2453 } 3166 }
2454 } 3167 }
2455 else
2456 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2457 3168
2458 if (w->wd >= 0) 3169 if (w->wd >= 0)
2459 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3170 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3171
3172 /* now re-arm timer, if required */
3173 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3174 ev_timer_again (EV_A_ &w->timer);
3175 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2460} 3176}
2461 3177
2462static void noinline 3178static void noinline
2463infy_del (EV_P_ ev_stat *w) 3179infy_del (EV_P_ ev_stat *w)
2464{ 3180{
… …
2467 3183
2468 if (wd < 0) 3184 if (wd < 0)
2469 return; 3185 return;
2470 3186
2471 w->wd = -2; 3187 w->wd = -2;
2472 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3188 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2473 wlist_del (&fs_hash [slot].head, (WL)w); 3189 wlist_del (&fs_hash [slot].head, (WL)w);
2474 3190
2475 /* remove this watcher, if others are watching it, they will rearm */ 3191 /* remove this watcher, if others are watching it, they will rearm */
2476 inotify_rm_watch (fs_fd, wd); 3192 inotify_rm_watch (fs_fd, wd);
2477} 3193}
… …
2479static void noinline 3195static void noinline
2480infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3196infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2481{ 3197{
2482 if (slot < 0) 3198 if (slot < 0)
2483 /* overflow, need to check for all hash slots */ 3199 /* overflow, need to check for all hash slots */
2484 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3200 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2485 infy_wd (EV_A_ slot, wd, ev); 3201 infy_wd (EV_A_ slot, wd, ev);
2486 else 3202 else
2487 { 3203 {
2488 WL w_; 3204 WL w_;
2489 3205
2490 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3206 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2491 { 3207 {
2492 ev_stat *w = (ev_stat *)w_; 3208 ev_stat *w = (ev_stat *)w_;
2493 w_ = w_->next; /* lets us remove this watcher and all before it */ 3209 w_ = w_->next; /* lets us remove this watcher and all before it */
2494 3210
2495 if (w->wd == wd || wd == -1) 3211 if (w->wd == wd || wd == -1)
2496 { 3212 {
2497 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3213 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2498 { 3214 {
3215 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2499 w->wd = -1; 3216 w->wd = -1;
2500 infy_add (EV_A_ w); /* re-add, no matter what */ 3217 infy_add (EV_A_ w); /* re-add, no matter what */
2501 } 3218 }
2502 3219
2503 stat_timer_cb (EV_A_ &w->timer, 0); 3220 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2508 3225
2509static void 3226static void
2510infy_cb (EV_P_ ev_io *w, int revents) 3227infy_cb (EV_P_ ev_io *w, int revents)
2511{ 3228{
2512 char buf [EV_INOTIFY_BUFSIZE]; 3229 char buf [EV_INOTIFY_BUFSIZE];
2513 struct inotify_event *ev = (struct inotify_event *)buf;
2514 int ofs; 3230 int ofs;
2515 int len = read (fs_fd, buf, sizeof (buf)); 3231 int len = read (fs_fd, buf, sizeof (buf));
2516 3232
2517 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3233 for (ofs = 0; ofs < len; )
3234 {
3235 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2518 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3236 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3237 ofs += sizeof (struct inotify_event) + ev->len;
3238 }
2519} 3239}
2520 3240
2521void inline_size 3241inline_size void
2522infy_init (EV_P) 3242ev_check_2625 (EV_P)
2523{ 3243{
2524 if (fs_fd != -2)
2525 return;
2526
2527 /* kernels < 2.6.25 are borked 3244 /* kernels < 2.6.25 are borked
2528 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3245 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2529 */ 3246 */
2530 { 3247 if (ev_linux_version () < 0x020619)
2531 struct utsname buf; 3248 return;
2532 int major, minor, micro;
2533 3249
3250 fs_2625 = 1;
3251}
3252
3253inline_size int
3254infy_newfd (void)
3255{
3256#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3257 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3258 if (fd >= 0)
3259 return fd;
3260#endif
3261 return inotify_init ();
3262}
3263
3264inline_size void
3265infy_init (EV_P)
3266{
3267 if (fs_fd != -2)
3268 return;
3269
2534 fs_fd = -1; 3270 fs_fd = -1;
2535 3271
2536 if (uname (&buf)) 3272 ev_check_2625 (EV_A);
2537 return;
2538 3273
2539 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2540 return;
2541
2542 if (major < 2
2543 || (major == 2 && minor < 6)
2544 || (major == 2 && minor == 6 && micro < 25))
2545 return;
2546 }
2547
2548 fs_fd = inotify_init (); 3274 fs_fd = infy_newfd ();
2549 3275
2550 if (fs_fd >= 0) 3276 if (fs_fd >= 0)
2551 { 3277 {
3278 fd_intern (fs_fd);
2552 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3279 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2553 ev_set_priority (&fs_w, EV_MAXPRI); 3280 ev_set_priority (&fs_w, EV_MAXPRI);
2554 ev_io_start (EV_A_ &fs_w); 3281 ev_io_start (EV_A_ &fs_w);
3282 ev_unref (EV_A);
2555 } 3283 }
2556} 3284}
2557 3285
2558void inline_size 3286inline_size void
2559infy_fork (EV_P) 3287infy_fork (EV_P)
2560{ 3288{
2561 int slot; 3289 int slot;
2562 3290
2563 if (fs_fd < 0) 3291 if (fs_fd < 0)
2564 return; 3292 return;
2565 3293
3294 ev_ref (EV_A);
3295 ev_io_stop (EV_A_ &fs_w);
2566 close (fs_fd); 3296 close (fs_fd);
2567 fs_fd = inotify_init (); 3297 fs_fd = infy_newfd ();
2568 3298
3299 if (fs_fd >= 0)
3300 {
3301 fd_intern (fs_fd);
3302 ev_io_set (&fs_w, fs_fd, EV_READ);
3303 ev_io_start (EV_A_ &fs_w);
3304 ev_unref (EV_A);
3305 }
3306
2569 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3307 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2570 { 3308 {
2571 WL w_ = fs_hash [slot].head; 3309 WL w_ = fs_hash [slot].head;
2572 fs_hash [slot].head = 0; 3310 fs_hash [slot].head = 0;
2573 3311
2574 while (w_) 3312 while (w_)
… …
2579 w->wd = -1; 3317 w->wd = -1;
2580 3318
2581 if (fs_fd >= 0) 3319 if (fs_fd >= 0)
2582 infy_add (EV_A_ w); /* re-add, no matter what */ 3320 infy_add (EV_A_ w); /* re-add, no matter what */
2583 else 3321 else
3322 {
3323 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3324 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2584 ev_timer_start (EV_A_ &w->timer); 3325 ev_timer_again (EV_A_ &w->timer);
3326 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3327 }
2585 } 3328 }
2586 } 3329 }
2587} 3330}
2588 3331
2589#endif 3332#endif
… …
2606static void noinline 3349static void noinline
2607stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3350stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2608{ 3351{
2609 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3352 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2610 3353
2611 /* we copy this here each the time so that */ 3354 ev_statdata prev = w->attr;
2612 /* prev has the old value when the callback gets invoked */
2613 w->prev = w->attr;
2614 ev_stat_stat (EV_A_ w); 3355 ev_stat_stat (EV_A_ w);
2615 3356
2616 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3357 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2617 if ( 3358 if (
2618 w->prev.st_dev != w->attr.st_dev 3359 prev.st_dev != w->attr.st_dev
2619 || w->prev.st_ino != w->attr.st_ino 3360 || prev.st_ino != w->attr.st_ino
2620 || w->prev.st_mode != w->attr.st_mode 3361 || prev.st_mode != w->attr.st_mode
2621 || w->prev.st_nlink != w->attr.st_nlink 3362 || prev.st_nlink != w->attr.st_nlink
2622 || w->prev.st_uid != w->attr.st_uid 3363 || prev.st_uid != w->attr.st_uid
2623 || w->prev.st_gid != w->attr.st_gid 3364 || prev.st_gid != w->attr.st_gid
2624 || w->prev.st_rdev != w->attr.st_rdev 3365 || prev.st_rdev != w->attr.st_rdev
2625 || w->prev.st_size != w->attr.st_size 3366 || prev.st_size != w->attr.st_size
2626 || w->prev.st_atime != w->attr.st_atime 3367 || prev.st_atime != w->attr.st_atime
2627 || w->prev.st_mtime != w->attr.st_mtime 3368 || prev.st_mtime != w->attr.st_mtime
2628 || w->prev.st_ctime != w->attr.st_ctime 3369 || prev.st_ctime != w->attr.st_ctime
2629 ) { 3370 ) {
3371 /* we only update w->prev on actual differences */
3372 /* in case we test more often than invoke the callback, */
3373 /* to ensure that prev is always different to attr */
3374 w->prev = prev;
3375
2630 #if EV_USE_INOTIFY 3376 #if EV_USE_INOTIFY
2631 if (fs_fd >= 0) 3377 if (fs_fd >= 0)
2632 { 3378 {
2633 infy_del (EV_A_ w); 3379 infy_del (EV_A_ w);
2634 infy_add (EV_A_ w); 3380 infy_add (EV_A_ w);
… …
2644ev_stat_start (EV_P_ ev_stat *w) 3390ev_stat_start (EV_P_ ev_stat *w)
2645{ 3391{
2646 if (expect_false (ev_is_active (w))) 3392 if (expect_false (ev_is_active (w)))
2647 return; 3393 return;
2648 3394
2649 /* since we use memcmp, we need to clear any padding data etc. */
2650 memset (&w->prev, 0, sizeof (ev_statdata));
2651 memset (&w->attr, 0, sizeof (ev_statdata));
2652
2653 ev_stat_stat (EV_A_ w); 3395 ev_stat_stat (EV_A_ w);
2654 3396
3397 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2655 if (w->interval < MIN_STAT_INTERVAL) 3398 w->interval = MIN_STAT_INTERVAL;
2656 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2657 3399
2658 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3400 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2659 ev_set_priority (&w->timer, ev_priority (w)); 3401 ev_set_priority (&w->timer, ev_priority (w));
2660 3402
2661#if EV_USE_INOTIFY 3403#if EV_USE_INOTIFY
2662 infy_init (EV_A); 3404 infy_init (EV_A);
2663 3405
2664 if (fs_fd >= 0) 3406 if (fs_fd >= 0)
2665 infy_add (EV_A_ w); 3407 infy_add (EV_A_ w);
2666 else 3408 else
2667#endif 3409#endif
3410 {
2668 ev_timer_start (EV_A_ &w->timer); 3411 ev_timer_again (EV_A_ &w->timer);
3412 ev_unref (EV_A);
3413 }
2669 3414
2670 ev_start (EV_A_ (W)w, 1); 3415 ev_start (EV_A_ (W)w, 1);
2671 3416
2672 EV_FREQUENT_CHECK; 3417 EV_FREQUENT_CHECK;
2673} 3418}
… …
2682 EV_FREQUENT_CHECK; 3427 EV_FREQUENT_CHECK;
2683 3428
2684#if EV_USE_INOTIFY 3429#if EV_USE_INOTIFY
2685 infy_del (EV_A_ w); 3430 infy_del (EV_A_ w);
2686#endif 3431#endif
3432
3433 if (ev_is_active (&w->timer))
3434 {
3435 ev_ref (EV_A);
2687 ev_timer_stop (EV_A_ &w->timer); 3436 ev_timer_stop (EV_A_ &w->timer);
3437 }
2688 3438
2689 ev_stop (EV_A_ (W)w); 3439 ev_stop (EV_A_ (W)w);
2690 3440
2691 EV_FREQUENT_CHECK; 3441 EV_FREQUENT_CHECK;
2692} 3442}
… …
2737 3487
2738 EV_FREQUENT_CHECK; 3488 EV_FREQUENT_CHECK;
2739} 3489}
2740#endif 3490#endif
2741 3491
3492#if EV_PREPARE_ENABLE
2742void 3493void
2743ev_prepare_start (EV_P_ ev_prepare *w) 3494ev_prepare_start (EV_P_ ev_prepare *w)
2744{ 3495{
2745 if (expect_false (ev_is_active (w))) 3496 if (expect_false (ev_is_active (w)))
2746 return; 3497 return;
… …
2772 3523
2773 ev_stop (EV_A_ (W)w); 3524 ev_stop (EV_A_ (W)w);
2774 3525
2775 EV_FREQUENT_CHECK; 3526 EV_FREQUENT_CHECK;
2776} 3527}
3528#endif
2777 3529
3530#if EV_CHECK_ENABLE
2778void 3531void
2779ev_check_start (EV_P_ ev_check *w) 3532ev_check_start (EV_P_ ev_check *w)
2780{ 3533{
2781 if (expect_false (ev_is_active (w))) 3534 if (expect_false (ev_is_active (w)))
2782 return; 3535 return;
… …
2808 3561
2809 ev_stop (EV_A_ (W)w); 3562 ev_stop (EV_A_ (W)w);
2810 3563
2811 EV_FREQUENT_CHECK; 3564 EV_FREQUENT_CHECK;
2812} 3565}
3566#endif
2813 3567
2814#if EV_EMBED_ENABLE 3568#if EV_EMBED_ENABLE
2815void noinline 3569void noinline
2816ev_embed_sweep (EV_P_ ev_embed *w) 3570ev_embed_sweep (EV_P_ ev_embed *w)
2817{ 3571{
2818 ev_loop (w->other, EVLOOP_NONBLOCK); 3572 ev_run (w->other, EVRUN_NOWAIT);
2819} 3573}
2820 3574
2821static void 3575static void
2822embed_io_cb (EV_P_ ev_io *io, int revents) 3576embed_io_cb (EV_P_ ev_io *io, int revents)
2823{ 3577{
2824 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3578 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2825 3579
2826 if (ev_cb (w)) 3580 if (ev_cb (w))
2827 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3581 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2828 else 3582 else
2829 ev_loop (w->other, EVLOOP_NONBLOCK); 3583 ev_run (w->other, EVRUN_NOWAIT);
2830} 3584}
2831 3585
2832static void 3586static void
2833embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3587embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2834{ 3588{
2835 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3589 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2836 3590
2837 { 3591 {
2838 struct ev_loop *loop = w->other; 3592 EV_P = w->other;
2839 3593
2840 while (fdchangecnt) 3594 while (fdchangecnt)
2841 { 3595 {
2842 fd_reify (EV_A); 3596 fd_reify (EV_A);
2843 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3597 ev_run (EV_A_ EVRUN_NOWAIT);
2844 } 3598 }
2845 } 3599 }
2846} 3600}
2847 3601
2848static void 3602static void
2849embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3603embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2850{ 3604{
2851 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3605 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2852 3606
3607 ev_embed_stop (EV_A_ w);
3608
2853 { 3609 {
2854 struct ev_loop *loop = w->other; 3610 EV_P = w->other;
2855 3611
2856 ev_loop_fork (EV_A); 3612 ev_loop_fork (EV_A);
3613 ev_run (EV_A_ EVRUN_NOWAIT);
2857 } 3614 }
3615
3616 ev_embed_start (EV_A_ w);
2858} 3617}
2859 3618
2860#if 0 3619#if 0
2861static void 3620static void
2862embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3621embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2870{ 3629{
2871 if (expect_false (ev_is_active (w))) 3630 if (expect_false (ev_is_active (w)))
2872 return; 3631 return;
2873 3632
2874 { 3633 {
2875 struct ev_loop *loop = w->other; 3634 EV_P = w->other;
2876 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3635 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2877 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3636 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2878 } 3637 }
2879 3638
2880 EV_FREQUENT_CHECK; 3639 EV_FREQUENT_CHECK;
2881 3640
… …
2907 3666
2908 ev_io_stop (EV_A_ &w->io); 3667 ev_io_stop (EV_A_ &w->io);
2909 ev_prepare_stop (EV_A_ &w->prepare); 3668 ev_prepare_stop (EV_A_ &w->prepare);
2910 ev_fork_stop (EV_A_ &w->fork); 3669 ev_fork_stop (EV_A_ &w->fork);
2911 3670
3671 ev_stop (EV_A_ (W)w);
3672
2912 EV_FREQUENT_CHECK; 3673 EV_FREQUENT_CHECK;
2913} 3674}
2914#endif 3675#endif
2915 3676
2916#if EV_FORK_ENABLE 3677#if EV_FORK_ENABLE
… …
2949 3710
2950 EV_FREQUENT_CHECK; 3711 EV_FREQUENT_CHECK;
2951} 3712}
2952#endif 3713#endif
2953 3714
2954#if EV_ASYNC_ENABLE 3715#if EV_CLEANUP_ENABLE
2955void 3716void
2956ev_async_start (EV_P_ ev_async *w) 3717ev_cleanup_start (EV_P_ ev_cleanup *w)
2957{ 3718{
2958 if (expect_false (ev_is_active (w))) 3719 if (expect_false (ev_is_active (w)))
2959 return; 3720 return;
3721
3722 EV_FREQUENT_CHECK;
3723
3724 ev_start (EV_A_ (W)w, ++cleanupcnt);
3725 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3726 cleanups [cleanupcnt - 1] = w;
3727
3728 /* cleanup watchers should never keep a refcount on the loop */
3729 ev_unref (EV_A);
3730 EV_FREQUENT_CHECK;
3731}
3732
3733void
3734ev_cleanup_stop (EV_P_ ev_cleanup *w)
3735{
3736 clear_pending (EV_A_ (W)w);
3737 if (expect_false (!ev_is_active (w)))
3738 return;
3739
3740 EV_FREQUENT_CHECK;
3741 ev_ref (EV_A);
3742
3743 {
3744 int active = ev_active (w);
3745
3746 cleanups [active - 1] = cleanups [--cleanupcnt];
3747 ev_active (cleanups [active - 1]) = active;
3748 }
3749
3750 ev_stop (EV_A_ (W)w);
3751
3752 EV_FREQUENT_CHECK;
3753}
3754#endif
3755
3756#if EV_ASYNC_ENABLE
3757void
3758ev_async_start (EV_P_ ev_async *w)
3759{
3760 if (expect_false (ev_is_active (w)))
3761 return;
3762
3763 w->sent = 0;
2960 3764
2961 evpipe_init (EV_A); 3765 evpipe_init (EV_A);
2962 3766
2963 EV_FREQUENT_CHECK; 3767 EV_FREQUENT_CHECK;
2964 3768
… …
2992 3796
2993void 3797void
2994ev_async_send (EV_P_ ev_async *w) 3798ev_async_send (EV_P_ ev_async *w)
2995{ 3799{
2996 w->sent = 1; 3800 w->sent = 1;
2997 evpipe_write (EV_A_ &gotasync); 3801 evpipe_write (EV_A_ &async_pending);
2998} 3802}
2999#endif 3803#endif
3000 3804
3001/*****************************************************************************/ 3805/*****************************************************************************/
3002 3806
… …
3042{ 3846{
3043 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3847 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3044 3848
3045 if (expect_false (!once)) 3849 if (expect_false (!once))
3046 { 3850 {
3047 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3851 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3048 return; 3852 return;
3049 } 3853 }
3050 3854
3051 once->cb = cb; 3855 once->cb = cb;
3052 once->arg = arg; 3856 once->arg = arg;
… …
3064 ev_timer_set (&once->to, timeout, 0.); 3868 ev_timer_set (&once->to, timeout, 0.);
3065 ev_timer_start (EV_A_ &once->to); 3869 ev_timer_start (EV_A_ &once->to);
3066 } 3870 }
3067} 3871}
3068 3872
3873/*****************************************************************************/
3874
3875#if EV_WALK_ENABLE
3876void
3877ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3878{
3879 int i, j;
3880 ev_watcher_list *wl, *wn;
3881
3882 if (types & (EV_IO | EV_EMBED))
3883 for (i = 0; i < anfdmax; ++i)
3884 for (wl = anfds [i].head; wl; )
3885 {
3886 wn = wl->next;
3887
3888#if EV_EMBED_ENABLE
3889 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3890 {
3891 if (types & EV_EMBED)
3892 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3893 }
3894 else
3895#endif
3896#if EV_USE_INOTIFY
3897 if (ev_cb ((ev_io *)wl) == infy_cb)
3898 ;
3899 else
3900#endif
3901 if ((ev_io *)wl != &pipe_w)
3902 if (types & EV_IO)
3903 cb (EV_A_ EV_IO, wl);
3904
3905 wl = wn;
3906 }
3907
3908 if (types & (EV_TIMER | EV_STAT))
3909 for (i = timercnt + HEAP0; i-- > HEAP0; )
3910#if EV_STAT_ENABLE
3911 /*TODO: timer is not always active*/
3912 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3913 {
3914 if (types & EV_STAT)
3915 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3916 }
3917 else
3918#endif
3919 if (types & EV_TIMER)
3920 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3921
3922#if EV_PERIODIC_ENABLE
3923 if (types & EV_PERIODIC)
3924 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3925 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3926#endif
3927
3928#if EV_IDLE_ENABLE
3929 if (types & EV_IDLE)
3930 for (j = NUMPRI; i--; )
3931 for (i = idlecnt [j]; i--; )
3932 cb (EV_A_ EV_IDLE, idles [j][i]);
3933#endif
3934
3935#if EV_FORK_ENABLE
3936 if (types & EV_FORK)
3937 for (i = forkcnt; i--; )
3938 if (ev_cb (forks [i]) != embed_fork_cb)
3939 cb (EV_A_ EV_FORK, forks [i]);
3940#endif
3941
3942#if EV_ASYNC_ENABLE
3943 if (types & EV_ASYNC)
3944 for (i = asynccnt; i--; )
3945 cb (EV_A_ EV_ASYNC, asyncs [i]);
3946#endif
3947
3948#if EV_PREPARE_ENABLE
3949 if (types & EV_PREPARE)
3950 for (i = preparecnt; i--; )
3951# if EV_EMBED_ENABLE
3952 if (ev_cb (prepares [i]) != embed_prepare_cb)
3953# endif
3954 cb (EV_A_ EV_PREPARE, prepares [i]);
3955#endif
3956
3957#if EV_CHECK_ENABLE
3958 if (types & EV_CHECK)
3959 for (i = checkcnt; i--; )
3960 cb (EV_A_ EV_CHECK, checks [i]);
3961#endif
3962
3963#if EV_SIGNAL_ENABLE
3964 if (types & EV_SIGNAL)
3965 for (i = 0; i < EV_NSIG - 1; ++i)
3966 for (wl = signals [i].head; wl; )
3967 {
3968 wn = wl->next;
3969 cb (EV_A_ EV_SIGNAL, wl);
3970 wl = wn;
3971 }
3972#endif
3973
3974#if EV_CHILD_ENABLE
3975 if (types & EV_CHILD)
3976 for (i = (EV_PID_HASHSIZE); i--; )
3977 for (wl = childs [i]; wl; )
3978 {
3979 wn = wl->next;
3980 cb (EV_A_ EV_CHILD, wl);
3981 wl = wn;
3982 }
3983#endif
3984/* EV_STAT 0x00001000 /* stat data changed */
3985/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3986}
3987#endif
3988
3069#if EV_MULTIPLICITY 3989#if EV_MULTIPLICITY
3070 #include "ev_wrap.h" 3990 #include "ev_wrap.h"
3071#endif 3991#endif
3072 3992
3073#ifdef __cplusplus 3993EV_CPP(})
3074}
3075#endif
3076 3994

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