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Comparing libev/ev.c (file contents):
Revision 1.237 by root, Wed May 7 15:16:56 2008 UTC vs.
Revision 1.373 by root, Sun Feb 20 02:56:23 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
130# endif 154# endif
131 155
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
132#endif 163# endif
164
165#endif
133 166
134#include <math.h>
135#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
136#include <fcntl.h> 169#include <fcntl.h>
137#include <stddef.h> 170#include <stddef.h>
138 171
139#include <stdio.h> 172#include <stdio.h>
140 173
141#include <assert.h> 174#include <assert.h>
142#include <errno.h> 175#include <errno.h>
143#include <sys/types.h> 176#include <sys/types.h>
144#include <time.h> 177#include <time.h>
178#include <limits.h>
145 179
146#include <signal.h> 180#include <signal.h>
147 181
148#ifdef EV_H 182#ifdef EV_H
149# include EV_H 183# include EV_H
150#else 184#else
151# include "ev.h" 185# include "ev.h"
152#endif 186#endif
187
188EV_CPP(extern "C" {)
153 189
154#ifndef _WIN32 190#ifndef _WIN32
155# include <sys/time.h> 191# include <sys/time.h>
156# include <sys/wait.h> 192# include <sys/wait.h>
157# include <unistd.h> 193# include <unistd.h>
158#else 194#else
195# include <io.h>
159# define WIN32_LEAN_AND_MEAN 196# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 197# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
163# endif 200# endif
201# undef EV_AVOID_STDIO
164#endif 202#endif
203
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
165 211
166/* this block tries to deduce configuration from header-defined symbols and defaults */ 212/* this block tries to deduce configuration from header-defined symbols and defaults */
167 213
214/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG)
216/* use what's provided */
217#elif defined (NSIG)
218# define EV_NSIG (NSIG)
219#elif defined(_NSIG)
220# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX)
222# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX)
224# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX)
226# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG)
228# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG)
230# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE)
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig)
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else
236# error "unable to find value for NSIG, please report"
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif
241
242#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0
244#endif
245
246#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else
250# define EV_USE_CLOCK_SYSCALL 0
251# endif
252#endif
253
168#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else
169# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
259# endif
170#endif 260#endif
171 261
172#ifndef EV_USE_REALTIME 262#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 264#endif
175 265
176#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
267# if _POSIX_C_SOURCE >= 199309L
268# define EV_USE_NANOSLEEP EV_FEATURE_OS
269# else
177# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
271# endif
178#endif 272#endif
179 273
180#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
182#endif 276#endif
183 277
184#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
185# ifdef _WIN32 279# ifdef _WIN32
186# define EV_USE_POLL 0 280# define EV_USE_POLL 0
187# else 281# else
188# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
189# endif 283# endif
190#endif 284#endif
191 285
192#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
195# else 289# else
196# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
197# endif 291# endif
198#endif 292#endif
199 293
… …
205# define EV_USE_PORT 0 299# define EV_USE_PORT 0
206#endif 300#endif
207 301
208#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
211# else 305# else
212# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
213# endif 307# endif
214#endif 308#endif
215 309
216#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL 311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif 312#endif
223 313
224#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL 315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif 316#endif
231 317
232#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
235# else 321# else
236# define EV_USE_EVENTFD 0 322# define EV_USE_EVENTFD 0
237# endif 323# endif
238#endif 324#endif
239 325
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
331# endif
332#endif
333
334#if 0 /* debugging */
335# define EV_VERIFY 3
336# define EV_USE_4HEAP 1
337# define EV_HEAP_CACHE_AT 1
338#endif
339
340#ifndef EV_VERIFY
341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
342#endif
343
344#ifndef EV_USE_4HEAP
345# define EV_USE_4HEAP EV_FEATURE_DATA
346#endif
347
348#ifndef EV_HEAP_CACHE_AT
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
364#endif
365
240/* 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
241 373
242#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
243# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
244# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
245#endif 377#endif
… …
253# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
254# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
255#endif 387#endif
256 388
257#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
258# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
259# include <sys/select.h> 392# include <sys/select.h>
260# endif 393# endif
261#endif 394#endif
262 395
263#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
397# include <sys/statfs.h>
264# include <sys/inotify.h> 398# include <sys/inotify.h>
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0
403# endif
265#endif 404#endif
266 405
267#if EV_SELECT_IS_WINSOCKET 406#if EV_SELECT_IS_WINSOCKET
268# include <winsock.h> 407# include <winsock.h>
269#endif 408#endif
270 409
271#if EV_USE_EVENTFD 410#if EV_USE_EVENTFD
272/* 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 */
273# include <stdint.h> 412# include <stdint.h>
274# ifdef __cplusplus 413# ifndef EFD_NONBLOCK
275extern "C" { 414# define EFD_NONBLOCK O_NONBLOCK
276# endif 415# endif
277int eventfd (unsigned int initval, int flags); 416# ifndef EFD_CLOEXEC
278# ifdef __cplusplus 417# ifdef O_CLOEXEC
279} 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
280# 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};
281#endif 446#endif
282 447
283/**/ 448/**/
284 449
450#if EV_VERIFY >= 3
451# define EV_FREQUENT_CHECK ev_verify (EV_A)
452#else
453# define EV_FREQUENT_CHECK do { } while (0)
454#endif
455
285/* 456/*
286 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
287 * It is added to ev_rt_now when scheduling periodics
288 * to ensure progress, time-wise, even when rounding
289 * errors are against us.
290 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
291 * Better solutions welcome.
292 */ 459 */
293#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 */
294 462
295#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) */
296#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) */
297/*#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)
298 468
299#if __GNUC__ >= 4 469#if __GNUC__ >= 4
300# define expect(expr,value) __builtin_expect ((expr),(value)) 470# define expect(expr,value) __builtin_expect ((expr),(value))
301# define noinline __attribute__ ((noinline)) 471# define noinline __attribute__ ((noinline))
302#else 472#else
… …
309 479
310#define expect_false(expr) expect ((expr) != 0, 0) 480#define expect_false(expr) expect ((expr) != 0, 0)
311#define expect_true(expr) expect ((expr) != 0, 1) 481#define expect_true(expr) expect ((expr) != 0, 1)
312#define inline_size static inline 482#define inline_size static inline
313 483
314#if EV_MINIMAL 484#if EV_FEATURE_CODE
485# define inline_speed static inline
486#else
315# 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)
316#else 494#else
317# define inline_speed static inline
318#endif
319
320#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
321#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 495# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
496#endif
322 497
323#define EMPTY /* required for microsofts broken pseudo-c compiler */ 498#define EMPTY /* required for microsofts broken pseudo-c compiler */
324#define EMPTY2(a,b) /* used to suppress some warnings */ 499#define EMPTY2(a,b) /* used to suppress some warnings */
325 500
326typedef ev_watcher *W; 501typedef ev_watcher *W;
… …
328typedef ev_watcher_time *WT; 503typedef ev_watcher_time *WT;
329 504
330#define ev_active(w) ((W)(w))->active 505#define ev_active(w) ((W)(w))->active
331#define ev_at(w) ((WT)(w))->at 506#define ev_at(w) ((WT)(w))->at
332 507
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
333#if EV_USE_MONOTONIC 514#if EV_USE_MONOTONIC
334/* sig_atomic_t is used to avoid per-thread variables or locking but still */
335/* giving it a reasonably high chance of working on typical architetcures */
336static 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)
337#endif 526#endif
338 527
339#ifdef _WIN32 528#ifdef _WIN32
340# include "ev_win32.c" 529# include "ev_win32.c"
341#endif 530#endif
342 531
343/*****************************************************************************/ 532/*****************************************************************************/
344 533
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
345static void (*syserr_cb)(const char *msg); 632static void (*syserr_cb)(const char *msg);
346 633
347void 634void
348ev_set_syserr_cb (void (*cb)(const char *msg)) 635ev_set_syserr_cb (void (*cb)(const char *msg))
349{ 636{
350 syserr_cb = cb; 637 syserr_cb = cb;
351} 638}
352 639
353static void noinline 640static void noinline
354syserr (const char *msg) 641ev_syserr (const char *msg)
355{ 642{
356 if (!msg) 643 if (!msg)
357 msg = "(libev) system error"; 644 msg = "(libev) system error";
358 645
359 if (syserr_cb) 646 if (syserr_cb)
360 syserr_cb (msg); 647 syserr_cb (msg);
361 else 648 else
362 { 649 {
650#if EV_AVOID_STDIO
651 ev_printerr (msg);
652 ev_printerr (": ");
653 ev_printerr (strerror (errno));
654 ev_printerr ("\n");
655#else
363 perror (msg); 656 perror (msg);
657#endif
364 abort (); 658 abort ();
365 } 659 }
366} 660}
367 661
368static void * 662static void *
369ev_realloc_emul (void *ptr, long size) 663ev_realloc_emul (void *ptr, long size)
370{ 664{
665#if __GLIBC__
666 return realloc (ptr, size);
667#else
371 /* some systems, notably openbsd and darwin, fail to properly 668 /* some systems, notably openbsd and darwin, fail to properly
372 * 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
373 * the single unix specification, so work around them here. 670 * the single unix specification, so work around them here.
374 */ 671 */
375 672
376 if (size) 673 if (size)
377 return realloc (ptr, size); 674 return realloc (ptr, size);
378 675
379 free (ptr); 676 free (ptr);
380 return 0; 677 return 0;
678#endif
381} 679}
382 680
383static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 681static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
384 682
385void 683void
… …
393{ 691{
394 ptr = alloc (ptr, size); 692 ptr = alloc (ptr, size);
395 693
396 if (!ptr && size) 694 if (!ptr && size)
397 { 695 {
696#if EV_AVOID_STDIO
697 ev_printerr ("(libev) memory allocation failed, aborting.\n");
698#else
398 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 699 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
700#endif
399 abort (); 701 abort ();
400 } 702 }
401 703
402 return ptr; 704 return ptr;
403} 705}
… …
405#define ev_malloc(size) ev_realloc (0, (size)) 707#define ev_malloc(size) ev_realloc (0, (size))
406#define ev_free(ptr) ev_realloc ((ptr), 0) 708#define ev_free(ptr) ev_realloc ((ptr), 0)
407 709
408/*****************************************************************************/ 710/*****************************************************************************/
409 711
712/* set in reify when reification needed */
713#define EV_ANFD_REIFY 1
714
715/* file descriptor info structure */
410typedef struct 716typedef struct
411{ 717{
412 WL head; 718 WL head;
413 unsigned char events; 719 unsigned char events; /* the events watched for */
720 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
721 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
414 unsigned char reify; 722 unsigned char unused;
723#if EV_USE_EPOLL
724 unsigned int egen; /* generation counter to counter epoll bugs */
725#endif
415#if EV_SELECT_IS_WINSOCKET 726#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
416 SOCKET handle; 727 SOCKET handle;
417#endif 728#endif
729#if EV_USE_IOCP
730 OVERLAPPED or, ow;
731#endif
418} ANFD; 732} ANFD;
419 733
734/* stores the pending event set for a given watcher */
420typedef struct 735typedef struct
421{ 736{
422 W w; 737 W w;
423 int events; 738 int events; /* the pending event set for the given watcher */
424} ANPENDING; 739} ANPENDING;
425 740
426#if EV_USE_INOTIFY 741#if EV_USE_INOTIFY
742/* hash table entry per inotify-id */
427typedef struct 743typedef struct
428{ 744{
429 WL head; 745 WL head;
430} ANFS; 746} ANFS;
747#endif
748
749/* Heap Entry */
750#if EV_HEAP_CACHE_AT
751 /* a heap element */
752 typedef struct {
753 ev_tstamp at;
754 WT w;
755 } ANHE;
756
757 #define ANHE_w(he) (he).w /* access watcher, read-write */
758 #define ANHE_at(he) (he).at /* access cached at, read-only */
759 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
760#else
761 /* a heap element */
762 typedef WT ANHE;
763
764 #define ANHE_w(he) (he)
765 #define ANHE_at(he) (he)->at
766 #define ANHE_at_cache(he)
431#endif 767#endif
432 768
433#if EV_MULTIPLICITY 769#if EV_MULTIPLICITY
434 770
435 struct ev_loop 771 struct ev_loop
… …
454 790
455 static int ev_default_loop_ptr; 791 static int ev_default_loop_ptr;
456 792
457#endif 793#endif
458 794
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
459/*****************************************************************************/ 807/*****************************************************************************/
460 808
809#ifndef EV_HAVE_EV_TIME
461ev_tstamp 810ev_tstamp
462ev_time (void) 811ev_time (void)
463{ 812{
464#if EV_USE_REALTIME 813#if EV_USE_REALTIME
814 if (expect_true (have_realtime))
815 {
465 struct timespec ts; 816 struct timespec ts;
466 clock_gettime (CLOCK_REALTIME, &ts); 817 clock_gettime (CLOCK_REALTIME, &ts);
467 return ts.tv_sec + ts.tv_nsec * 1e-9; 818 return ts.tv_sec + ts.tv_nsec * 1e-9;
468#else 819 }
820#endif
821
469 struct timeval tv; 822 struct timeval tv;
470 gettimeofday (&tv, 0); 823 gettimeofday (&tv, 0);
471 return tv.tv_sec + tv.tv_usec * 1e-6; 824 return tv.tv_sec + tv.tv_usec * 1e-6;
472#endif
473} 825}
826#endif
474 827
475ev_tstamp inline_size 828inline_size ev_tstamp
476get_clock (void) 829get_clock (void)
477{ 830{
478#if EV_USE_MONOTONIC 831#if EV_USE_MONOTONIC
479 if (expect_true (have_monotonic)) 832 if (expect_true (have_monotonic))
480 { 833 {
… …
501 if (delay > 0.) 854 if (delay > 0.)
502 { 855 {
503#if EV_USE_NANOSLEEP 856#if EV_USE_NANOSLEEP
504 struct timespec ts; 857 struct timespec ts;
505 858
506 ts.tv_sec = (time_t)delay; 859 EV_TS_SET (ts, delay);
507 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
508
509 nanosleep (&ts, 0); 860 nanosleep (&ts, 0);
510#elif defined(_WIN32) 861#elif defined(_WIN32)
511 Sleep ((unsigned long)(delay * 1e3)); 862 Sleep ((unsigned long)(delay * 1e3));
512#else 863#else
513 struct timeval tv; 864 struct timeval tv;
514 865
515 tv.tv_sec = (time_t)delay; 866 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
516 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 867 /* something not guaranteed by newer posix versions, but guaranteed */
517 868 /* by older ones */
869 EV_TV_SET (tv, delay);
518 select (0, 0, 0, 0, &tv); 870 select (0, 0, 0, 0, &tv);
519#endif 871#endif
520 } 872 }
521} 873}
522 874
875inline_speed int
876ev_timeout_to_ms (ev_tstamp timeout)
877{
878 int ms = timeout * 1000. + .999999;
879
880 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
881}
882
523/*****************************************************************************/ 883/*****************************************************************************/
524 884
525#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 885#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
526 886
527int inline_size 887/* find a suitable new size for the given array, */
888/* hopefully by rounding to a nice-to-malloc size */
889inline_size int
528array_nextsize (int elem, int cur, int cnt) 890array_nextsize (int elem, int cur, int cnt)
529{ 891{
530 int ncur = cur + 1; 892 int ncur = cur + 1;
531 893
532 do 894 do
… …
549array_realloc (int elem, void *base, int *cur, int cnt) 911array_realloc (int elem, void *base, int *cur, int cnt)
550{ 912{
551 *cur = array_nextsize (elem, *cur, cnt); 913 *cur = array_nextsize (elem, *cur, cnt);
552 return ev_realloc (base, elem * *cur); 914 return ev_realloc (base, elem * *cur);
553} 915}
916
917#define array_init_zero(base,count) \
918 memset ((void *)(base), 0, sizeof (*(base)) * (count))
554 919
555#define array_needsize(type,base,cur,cnt,init) \ 920#define array_needsize(type,base,cur,cnt,init) \
556 if (expect_false ((cnt) > (cur))) \ 921 if (expect_false ((cnt) > (cur))) \
557 { \ 922 { \
558 int ocur_ = (cur); \ 923 int ocur_ = (cur); \
… …
570 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 935 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
571 } 936 }
572#endif 937#endif
573 938
574#define array_free(stem, idx) \ 939#define array_free(stem, idx) \
575 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 940 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
576 941
577/*****************************************************************************/ 942/*****************************************************************************/
943
944/* dummy callback for pending events */
945static void noinline
946pendingcb (EV_P_ ev_prepare *w, int revents)
947{
948}
578 949
579void noinline 950void noinline
580ev_feed_event (EV_P_ void *w, int revents) 951ev_feed_event (EV_P_ void *w, int revents)
581{ 952{
582 W w_ = (W)w; 953 W w_ = (W)w;
… …
591 pendings [pri][w_->pending - 1].w = w_; 962 pendings [pri][w_->pending - 1].w = w_;
592 pendings [pri][w_->pending - 1].events = revents; 963 pendings [pri][w_->pending - 1].events = revents;
593 } 964 }
594} 965}
595 966
596void inline_speed 967inline_speed void
968feed_reverse (EV_P_ W w)
969{
970 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
971 rfeeds [rfeedcnt++] = w;
972}
973
974inline_size void
975feed_reverse_done (EV_P_ int revents)
976{
977 do
978 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
979 while (rfeedcnt);
980}
981
982inline_speed void
597queue_events (EV_P_ W *events, int eventcnt, int type) 983queue_events (EV_P_ W *events, int eventcnt, int type)
598{ 984{
599 int i; 985 int i;
600 986
601 for (i = 0; i < eventcnt; ++i) 987 for (i = 0; i < eventcnt; ++i)
602 ev_feed_event (EV_A_ events [i], type); 988 ev_feed_event (EV_A_ events [i], type);
603} 989}
604 990
605/*****************************************************************************/ 991/*****************************************************************************/
606 992
607void inline_size 993inline_speed void
608anfds_init (ANFD *base, int count)
609{
610 while (count--)
611 {
612 base->head = 0;
613 base->events = EV_NONE;
614 base->reify = 0;
615
616 ++base;
617 }
618}
619
620void inline_speed
621fd_event (EV_P_ int fd, int revents) 994fd_event_nocheck (EV_P_ int fd, int revents)
622{ 995{
623 ANFD *anfd = anfds + fd; 996 ANFD *anfd = anfds + fd;
624 ev_io *w; 997 ev_io *w;
625 998
626 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 999 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
630 if (ev) 1003 if (ev)
631 ev_feed_event (EV_A_ (W)w, ev); 1004 ev_feed_event (EV_A_ (W)w, ev);
632 } 1005 }
633} 1006}
634 1007
1008/* do not submit kernel events for fds that have reify set */
1009/* because that means they changed while we were polling for new events */
1010inline_speed void
1011fd_event (EV_P_ int fd, int revents)
1012{
1013 ANFD *anfd = anfds + fd;
1014
1015 if (expect_true (!anfd->reify))
1016 fd_event_nocheck (EV_A_ fd, revents);
1017}
1018
635void 1019void
636ev_feed_fd_event (EV_P_ int fd, int revents) 1020ev_feed_fd_event (EV_P_ int fd, int revents)
637{ 1021{
638 if (fd >= 0 && fd < anfdmax) 1022 if (fd >= 0 && fd < anfdmax)
639 fd_event (EV_A_ fd, revents); 1023 fd_event_nocheck (EV_A_ fd, revents);
640} 1024}
641 1025
642void inline_size 1026/* make sure the external fd watch events are in-sync */
1027/* with the kernel/libev internal state */
1028inline_size void
643fd_reify (EV_P) 1029fd_reify (EV_P)
644{ 1030{
645 int i; 1031 int i;
1032
1033#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1034 for (i = 0; i < fdchangecnt; ++i)
1035 {
1036 int fd = fdchanges [i];
1037 ANFD *anfd = anfds + fd;
1038
1039 if (anfd->reify & EV__IOFDSET)
1040 {
1041 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1042
1043 if (handle != anfd->handle)
1044 {
1045 unsigned long arg;
1046
1047 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1048
1049 /* handle changed, but fd didn't - we need to do it in two steps */
1050 backend_modify (EV_A_ fd, anfd->events, 0);
1051 anfd->events = 0;
1052 anfd->handle = handle;
1053 }
1054 }
1055 }
1056#endif
646 1057
647 for (i = 0; i < fdchangecnt; ++i) 1058 for (i = 0; i < fdchangecnt; ++i)
648 { 1059 {
649 int fd = fdchanges [i]; 1060 int fd = fdchanges [i];
650 ANFD *anfd = anfds + fd; 1061 ANFD *anfd = anfds + fd;
651 ev_io *w; 1062 ev_io *w;
652 1063
653 unsigned char events = 0; 1064 unsigned char o_events = anfd->events;
1065 unsigned char o_reify = anfd->reify;
654 1066
655 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1067 anfd->reify = 0;
656 events |= (unsigned char)w->events;
657 1068
658#if EV_SELECT_IS_WINSOCKET 1069 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
659 if (events)
660 { 1070 {
661 unsigned long argp; 1071 anfd->events = 0;
662 #ifdef EV_FD_TO_WIN32_HANDLE 1072
663 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1073 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
664 #else 1074 anfd->events |= (unsigned char)w->events;
665 anfd->handle = _get_osfhandle (fd); 1075
666 #endif 1076 if (o_events != anfd->events)
667 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 1077 o_reify = EV__IOFDSET; /* actually |= */
668 } 1078 }
669#endif
670 1079
671 { 1080 if (o_reify & EV__IOFDSET)
672 unsigned char o_events = anfd->events;
673 unsigned char o_reify = anfd->reify;
674
675 anfd->reify = 0;
676 anfd->events = events;
677
678 if (o_events != events || o_reify & EV_IOFDSET)
679 backend_modify (EV_A_ fd, o_events, events); 1081 backend_modify (EV_A_ fd, o_events, anfd->events);
680 }
681 } 1082 }
682 1083
683 fdchangecnt = 0; 1084 fdchangecnt = 0;
684} 1085}
685 1086
686void inline_size 1087/* something about the given fd changed */
1088inline_size void
687fd_change (EV_P_ int fd, int flags) 1089fd_change (EV_P_ int fd, int flags)
688{ 1090{
689 unsigned char reify = anfds [fd].reify; 1091 unsigned char reify = anfds [fd].reify;
690 anfds [fd].reify |= flags; 1092 anfds [fd].reify |= flags;
691 1093
… …
695 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1097 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
696 fdchanges [fdchangecnt - 1] = fd; 1098 fdchanges [fdchangecnt - 1] = fd;
697 } 1099 }
698} 1100}
699 1101
700void inline_speed 1102/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1103inline_speed void
701fd_kill (EV_P_ int fd) 1104fd_kill (EV_P_ int fd)
702{ 1105{
703 ev_io *w; 1106 ev_io *w;
704 1107
705 while ((w = (ev_io *)anfds [fd].head)) 1108 while ((w = (ev_io *)anfds [fd].head))
… …
707 ev_io_stop (EV_A_ w); 1110 ev_io_stop (EV_A_ w);
708 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1111 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
709 } 1112 }
710} 1113}
711 1114
712int inline_size 1115/* check whether the given fd is actually valid, for error recovery */
1116inline_size int
713fd_valid (int fd) 1117fd_valid (int fd)
714{ 1118{
715#ifdef _WIN32 1119#ifdef _WIN32
716 return _get_osfhandle (fd) != -1; 1120 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
717#else 1121#else
718 return fcntl (fd, F_GETFD) != -1; 1122 return fcntl (fd, F_GETFD) != -1;
719#endif 1123#endif
720} 1124}
721 1125
… …
725{ 1129{
726 int fd; 1130 int fd;
727 1131
728 for (fd = 0; fd < anfdmax; ++fd) 1132 for (fd = 0; fd < anfdmax; ++fd)
729 if (anfds [fd].events) 1133 if (anfds [fd].events)
730 if (!fd_valid (fd) == -1 && errno == EBADF) 1134 if (!fd_valid (fd) && errno == EBADF)
731 fd_kill (EV_A_ fd); 1135 fd_kill (EV_A_ fd);
732} 1136}
733 1137
734/* called on ENOMEM in select/poll to kill some fds and retry */ 1138/* called on ENOMEM in select/poll to kill some fds and retry */
735static void noinline 1139static void noinline
… …
739 1143
740 for (fd = anfdmax; fd--; ) 1144 for (fd = anfdmax; fd--; )
741 if (anfds [fd].events) 1145 if (anfds [fd].events)
742 { 1146 {
743 fd_kill (EV_A_ fd); 1147 fd_kill (EV_A_ fd);
744 return; 1148 break;
745 } 1149 }
746} 1150}
747 1151
748/* usually called after fork if backend needs to re-arm all fds from scratch */ 1152/* usually called after fork if backend needs to re-arm all fds from scratch */
749static void noinline 1153static void noinline
… …
753 1157
754 for (fd = 0; fd < anfdmax; ++fd) 1158 for (fd = 0; fd < anfdmax; ++fd)
755 if (anfds [fd].events) 1159 if (anfds [fd].events)
756 { 1160 {
757 anfds [fd].events = 0; 1161 anfds [fd].events = 0;
1162 anfds [fd].emask = 0;
758 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1163 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
759 } 1164 }
760} 1165}
761 1166
1167/* used to prepare libev internal fd's */
1168/* this is not fork-safe */
1169inline_speed void
1170fd_intern (int fd)
1171{
1172#ifdef _WIN32
1173 unsigned long arg = 1;
1174 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1175#else
1176 fcntl (fd, F_SETFD, FD_CLOEXEC);
1177 fcntl (fd, F_SETFL, O_NONBLOCK);
1178#endif
1179}
1180
762/*****************************************************************************/ 1181/*****************************************************************************/
1182
1183/*
1184 * the heap functions want a real array index. array index 0 is guaranteed to not
1185 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1186 * the branching factor of the d-tree.
1187 */
763 1188
764/* 1189/*
765 * at the moment we allow libev the luxury of two heaps, 1190 * at the moment we allow libev the luxury of two heaps,
766 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap 1191 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
767 * which is more cache-efficient. 1192 * which is more cache-efficient.
768 * the difference is about 5% with 50000+ watchers. 1193 * the difference is about 5% with 50000+ watchers.
769 */ 1194 */
770#define USE_4HEAP !EV_MINIMAL
771#if USE_4HEAP 1195#if EV_USE_4HEAP
772 1196
773#define DHEAP 4 1197#define DHEAP 4
774#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1198#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1199#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1200#define UPHEAP_DONE(p,k) ((p) == (k))
775 1201
776/* towards the root */ 1202/* away from the root */
777void inline_speed 1203inline_speed void
778upheap (WT *heap, int k) 1204downheap (ANHE *heap, int N, int k)
779{ 1205{
780 WT w = heap [k]; 1206 ANHE he = heap [k];
1207 ANHE *E = heap + N + HEAP0;
781 1208
782 for (;;) 1209 for (;;)
783 { 1210 {
784 int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
785
786 if (p >= HEAP0 || heap [p]->at <= w->at)
787 break;
788
789 heap [k] = heap [p];
790 ev_active (heap [k]) = k;
791 k = p;
792 }
793
794 heap [k] = w;
795 ev_active (heap [k]) = k;
796}
797
798/* away from the root */
799void inline_speed
800downheap (WT *heap, int N, int k)
801{
802 WT w = heap [k];
803 WT *E = heap + N + HEAP0;
804
805 for (;;)
806 {
807 ev_tstamp minat; 1211 ev_tstamp minat;
808 WT *minpos; 1212 ANHE *minpos;
809 WT *pos = heap + DHEAP * (k - HEAP0) + HEAP0; 1213 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
810 1214
811 // find minimum child 1215 /* find minimum child */
812 if (expect_true (pos + DHEAP - 1 < E)) 1216 if (expect_true (pos + DHEAP - 1 < E))
813 { 1217 {
814 /* fast path */
815 (minpos = pos + 0), (minat = (*minpos)->at); 1218 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
816 if (pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at); 1219 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
817 if (pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at); 1220 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
818 if (pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at); 1221 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1222 }
1223 else if (pos < E)
1224 {
1225 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1226 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1227 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1228 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
819 } 1229 }
820 else 1230 else
821 {
822 /* slow path */
823 if (pos >= E)
824 break;
825 (minpos = pos + 0), (minat = (*minpos)->at);
826 if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
827 if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
828 if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
829 }
830
831 if (w->at <= minat)
832 break; 1231 break;
833 1232
834 ev_active (*minpos) = k; 1233 if (ANHE_at (he) <= minat)
1234 break;
1235
835 heap [k] = *minpos; 1236 heap [k] = *minpos;
1237 ev_active (ANHE_w (*minpos)) = k;
836 1238
837 k = minpos - heap; 1239 k = minpos - heap;
838 } 1240 }
839 1241
840 heap [k] = w; 1242 heap [k] = he;
841 ev_active (heap [k]) = k; 1243 ev_active (ANHE_w (he)) = k;
842} 1244}
843 1245
844#else // 4HEAP 1246#else /* 4HEAP */
845 1247
846#define HEAP0 1 1248#define HEAP0 1
1249#define HPARENT(k) ((k) >> 1)
1250#define UPHEAP_DONE(p,k) (!(p))
847 1251
848/* towards the root */ 1252/* away from the root */
849void inline_speed 1253inline_speed void
850upheap (WT *heap, int k) 1254downheap (ANHE *heap, int N, int k)
851{ 1255{
852 WT w = heap [k]; 1256 ANHE he = heap [k];
853 1257
854 for (;;) 1258 for (;;)
855 { 1259 {
856 int p = k >> 1; 1260 int c = k << 1;
857 1261
858 /* maybe we could use a dummy element at heap [0]? */ 1262 if (c >= N + HEAP0)
859 if (!p || heap [p]->at <= w->at)
860 break; 1263 break;
861 1264
862 heap [k] = heap [p]; 1265 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
863 ev_active (heap [k]) = k; 1266 ? 1 : 0;
864 k = p;
865 }
866 1267
867 heap [k] = w; 1268 if (ANHE_at (he) <= ANHE_at (heap [c]))
868 ev_active (heap [k]) = k;
869}
870
871/* away from the root */
872void inline_speed
873downheap (WT *heap, int N, int k)
874{
875 WT w = heap [k];
876
877 for (;;)
878 {
879 int c = k << 1;
880
881 if (c > N)
882 break; 1269 break;
883 1270
884 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
885 ? 1 : 0;
886
887 if (w->at <= heap [c]->at)
888 break;
889
890 heap [k] = heap [c]; 1271 heap [k] = heap [c];
891 ((W)heap [k])->active = k; 1272 ev_active (ANHE_w (heap [k])) = k;
892 1273
893 k = c; 1274 k = c;
894 } 1275 }
895 1276
896 heap [k] = w; 1277 heap [k] = he;
1278 ev_active (ANHE_w (he)) = k;
1279}
1280#endif
1281
1282/* towards the root */
1283inline_speed void
1284upheap (ANHE *heap, int k)
1285{
1286 ANHE he = heap [k];
1287
1288 for (;;)
1289 {
1290 int p = HPARENT (k);
1291
1292 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1293 break;
1294
1295 heap [k] = heap [p];
897 ev_active (heap [k]) = k; 1296 ev_active (ANHE_w (heap [k])) = k;
898} 1297 k = p;
899#endif 1298 }
900 1299
901void inline_size 1300 heap [k] = he;
1301 ev_active (ANHE_w (he)) = k;
1302}
1303
1304/* move an element suitably so it is in a correct place */
1305inline_size void
902adjustheap (WT *heap, int N, int k) 1306adjustheap (ANHE *heap, int N, int k)
903{ 1307{
1308 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
904 upheap (heap, k); 1309 upheap (heap, k);
1310 else
905 downheap (heap, N, k); 1311 downheap (heap, N, k);
1312}
1313
1314/* rebuild the heap: this function is used only once and executed rarely */
1315inline_size void
1316reheap (ANHE *heap, int N)
1317{
1318 int i;
1319
1320 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1321 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1322 for (i = 0; i < N; ++i)
1323 upheap (heap, i + HEAP0);
906} 1324}
907 1325
908/*****************************************************************************/ 1326/*****************************************************************************/
909 1327
1328/* associate signal watchers to a signal signal */
910typedef struct 1329typedef struct
911{ 1330{
1331 EV_ATOMIC_T pending;
1332#if EV_MULTIPLICITY
1333 EV_P;
1334#endif
912 WL head; 1335 WL head;
913 EV_ATOMIC_T gotsig;
914} ANSIG; 1336} ANSIG;
915 1337
916static ANSIG *signals; 1338static ANSIG signals [EV_NSIG - 1];
917static int signalmax;
918
919static EV_ATOMIC_T gotsig;
920
921void inline_size
922signals_init (ANSIG *base, int count)
923{
924 while (count--)
925 {
926 base->head = 0;
927 base->gotsig = 0;
928
929 ++base;
930 }
931}
932 1339
933/*****************************************************************************/ 1340/*****************************************************************************/
934 1341
935void inline_speed 1342#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
936fd_intern (int fd)
937{
938#ifdef _WIN32
939 int arg = 1;
940 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
941#else
942 fcntl (fd, F_SETFD, FD_CLOEXEC);
943 fcntl (fd, F_SETFL, O_NONBLOCK);
944#endif
945}
946 1343
947static void noinline 1344static void noinline
948evpipe_init (EV_P) 1345evpipe_init (EV_P)
949{ 1346{
950 if (!ev_is_active (&pipeev)) 1347 if (!ev_is_active (&pipe_w))
951 { 1348 {
952#if EV_USE_EVENTFD 1349# if EV_USE_EVENTFD
1350 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1351 if (evfd < 0 && errno == EINVAL)
953 if ((evfd = eventfd (0, 0)) >= 0) 1352 evfd = eventfd (0, 0);
1353
1354 if (evfd >= 0)
954 { 1355 {
955 evpipe [0] = -1; 1356 evpipe [0] = -1;
956 fd_intern (evfd); 1357 fd_intern (evfd); /* doing it twice doesn't hurt */
957 ev_io_set (&pipeev, evfd, EV_READ); 1358 ev_io_set (&pipe_w, evfd, EV_READ);
958 } 1359 }
959 else 1360 else
960#endif 1361# endif
961 { 1362 {
962 while (pipe (evpipe)) 1363 while (pipe (evpipe))
963 syserr ("(libev) error creating signal/async pipe"); 1364 ev_syserr ("(libev) error creating signal/async pipe");
964 1365
965 fd_intern (evpipe [0]); 1366 fd_intern (evpipe [0]);
966 fd_intern (evpipe [1]); 1367 fd_intern (evpipe [1]);
967 ev_io_set (&pipeev, evpipe [0], EV_READ); 1368 ev_io_set (&pipe_w, evpipe [0], EV_READ);
968 } 1369 }
969 1370
970 ev_io_start (EV_A_ &pipeev); 1371 ev_io_start (EV_A_ &pipe_w);
971 ev_unref (EV_A); /* watcher should not keep loop alive */ 1372 ev_unref (EV_A); /* watcher should not keep loop alive */
972 } 1373 }
973} 1374}
974 1375
975void inline_size 1376inline_size void
976evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1377evpipe_write (EV_P_ EV_ATOMIC_T *flag)
977{ 1378{
978 if (!*flag) 1379 if (!*flag)
979 { 1380 {
980 int old_errno = errno; /* save errno because write might clobber it */ 1381 int old_errno = errno; /* save errno because write might clobber it */
1382 char dummy;
981 1383
982 *flag = 1; 1384 *flag = 1;
983 1385
984#if EV_USE_EVENTFD 1386#if EV_USE_EVENTFD
985 if (evfd >= 0) 1387 if (evfd >= 0)
… …
987 uint64_t counter = 1; 1389 uint64_t counter = 1;
988 write (evfd, &counter, sizeof (uint64_t)); 1390 write (evfd, &counter, sizeof (uint64_t));
989 } 1391 }
990 else 1392 else
991#endif 1393#endif
1394 /* win32 people keep sending patches that change this write() to send() */
1395 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1396 /* so when you think this write should be a send instead, please find out */
1397 /* where your send() is from - it's definitely not the microsoft send, and */
1398 /* tell me. thank you. */
992 write (evpipe [1], &old_errno, 1); 1399 write (evpipe [1], &dummy, 1);
993 1400
994 errno = old_errno; 1401 errno = old_errno;
995 } 1402 }
996} 1403}
997 1404
1405/* called whenever the libev signal pipe */
1406/* got some events (signal, async) */
998static void 1407static void
999pipecb (EV_P_ ev_io *iow, int revents) 1408pipecb (EV_P_ ev_io *iow, int revents)
1000{ 1409{
1410 int i;
1411
1001#if EV_USE_EVENTFD 1412#if EV_USE_EVENTFD
1002 if (evfd >= 0) 1413 if (evfd >= 0)
1003 { 1414 {
1004 uint64_t counter; 1415 uint64_t counter;
1005 read (evfd, &counter, sizeof (uint64_t)); 1416 read (evfd, &counter, sizeof (uint64_t));
1006 } 1417 }
1007 else 1418 else
1008#endif 1419#endif
1009 { 1420 {
1010 char dummy; 1421 char dummy;
1422 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1011 read (evpipe [0], &dummy, 1); 1423 read (evpipe [0], &dummy, 1);
1012 } 1424 }
1013 1425
1014 if (gotsig && ev_is_default_loop (EV_A)) 1426#if EV_SIGNAL_ENABLE
1015 { 1427 if (sig_pending)
1016 int signum; 1428 {
1017 gotsig = 0; 1429 sig_pending = 0;
1018 1430
1019 for (signum = signalmax; signum--; ) 1431 for (i = EV_NSIG - 1; i--; )
1020 if (signals [signum].gotsig) 1432 if (expect_false (signals [i].pending))
1021 ev_feed_signal_event (EV_A_ signum + 1); 1433 ev_feed_signal_event (EV_A_ i + 1);
1022 } 1434 }
1435#endif
1023 1436
1024#if EV_ASYNC_ENABLE 1437#if EV_ASYNC_ENABLE
1025 if (gotasync) 1438 if (async_pending)
1026 { 1439 {
1027 int i; 1440 async_pending = 0;
1028 gotasync = 0;
1029 1441
1030 for (i = asynccnt; i--; ) 1442 for (i = asynccnt; i--; )
1031 if (asyncs [i]->sent) 1443 if (asyncs [i]->sent)
1032 { 1444 {
1033 asyncs [i]->sent = 0; 1445 asyncs [i]->sent = 0;
… …
1037#endif 1449#endif
1038} 1450}
1039 1451
1040/*****************************************************************************/ 1452/*****************************************************************************/
1041 1453
1454void
1455ev_feed_signal (int signum)
1456{
1457#if EV_MULTIPLICITY
1458 EV_P = signals [signum - 1].loop;
1459
1460 if (!EV_A)
1461 return;
1462#endif
1463
1464 signals [signum - 1].pending = 1;
1465 evpipe_write (EV_A_ &sig_pending);
1466}
1467
1042static void 1468static void
1043ev_sighandler (int signum) 1469ev_sighandler (int signum)
1044{ 1470{
1045#if EV_MULTIPLICITY
1046 struct ev_loop *loop = &default_loop_struct;
1047#endif
1048
1049#if _WIN32 1471#ifdef _WIN32
1050 signal (signum, ev_sighandler); 1472 signal (signum, ev_sighandler);
1051#endif 1473#endif
1052 1474
1053 signals [signum - 1].gotsig = 1; 1475 ev_feed_signal (signum);
1054 evpipe_write (EV_A_ &gotsig);
1055} 1476}
1056 1477
1057void noinline 1478void noinline
1058ev_feed_signal_event (EV_P_ int signum) 1479ev_feed_signal_event (EV_P_ int signum)
1059{ 1480{
1060 WL w; 1481 WL w;
1061 1482
1483 if (expect_false (signum <= 0 || signum > EV_NSIG))
1484 return;
1485
1486 --signum;
1487
1062#if EV_MULTIPLICITY 1488#if EV_MULTIPLICITY
1063 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1489 /* it is permissible to try to feed a signal to the wrong loop */
1064#endif 1490 /* or, likely more useful, feeding a signal nobody is waiting for */
1065 1491
1066 --signum; 1492 if (expect_false (signals [signum].loop != EV_A))
1067
1068 if (signum < 0 || signum >= signalmax)
1069 return; 1493 return;
1494#endif
1070 1495
1071 signals [signum].gotsig = 0; 1496 signals [signum].pending = 0;
1072 1497
1073 for (w = signals [signum].head; w; w = w->next) 1498 for (w = signals [signum].head; w; w = w->next)
1074 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1499 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1075} 1500}
1076 1501
1502#if EV_USE_SIGNALFD
1503static void
1504sigfdcb (EV_P_ ev_io *iow, int revents)
1505{
1506 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1507
1508 for (;;)
1509 {
1510 ssize_t res = read (sigfd, si, sizeof (si));
1511
1512 /* not ISO-C, as res might be -1, but works with SuS */
1513 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1514 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1515
1516 if (res < (ssize_t)sizeof (si))
1517 break;
1518 }
1519}
1520#endif
1521
1522#endif
1523
1077/*****************************************************************************/ 1524/*****************************************************************************/
1078 1525
1526#if EV_CHILD_ENABLE
1079static WL childs [EV_PID_HASHSIZE]; 1527static WL childs [EV_PID_HASHSIZE];
1080
1081#ifndef _WIN32
1082 1528
1083static ev_signal childev; 1529static ev_signal childev;
1084 1530
1085#ifndef WIFCONTINUED 1531#ifndef WIFCONTINUED
1086# define WIFCONTINUED(status) 0 1532# define WIFCONTINUED(status) 0
1087#endif 1533#endif
1088 1534
1089void inline_speed 1535/* handle a single child status event */
1536inline_speed void
1090child_reap (EV_P_ int chain, int pid, int status) 1537child_reap (EV_P_ int chain, int pid, int status)
1091{ 1538{
1092 ev_child *w; 1539 ev_child *w;
1093 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1540 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1094 1541
1095 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1542 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1096 { 1543 {
1097 if ((w->pid == pid || !w->pid) 1544 if ((w->pid == pid || !w->pid)
1098 && (!traced || (w->flags & 1))) 1545 && (!traced || (w->flags & 1)))
1099 { 1546 {
1100 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1547 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1107 1554
1108#ifndef WCONTINUED 1555#ifndef WCONTINUED
1109# define WCONTINUED 0 1556# define WCONTINUED 0
1110#endif 1557#endif
1111 1558
1559/* called on sigchld etc., calls waitpid */
1112static void 1560static void
1113childcb (EV_P_ ev_signal *sw, int revents) 1561childcb (EV_P_ ev_signal *sw, int revents)
1114{ 1562{
1115 int pid, status; 1563 int pid, status;
1116 1564
… …
1124 /* make sure we are called again until all children have been reaped */ 1572 /* make sure we are called again until all children have been reaped */
1125 /* we need to do it this way so that the callback gets called before we continue */ 1573 /* we need to do it this way so that the callback gets called before we continue */
1126 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1574 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1127 1575
1128 child_reap (EV_A_ pid, pid, status); 1576 child_reap (EV_A_ pid, pid, status);
1129 if (EV_PID_HASHSIZE > 1) 1577 if ((EV_PID_HASHSIZE) > 1)
1130 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1578 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1131} 1579}
1132 1580
1133#endif 1581#endif
1134 1582
1135/*****************************************************************************/ 1583/*****************************************************************************/
1136 1584
1585#if EV_USE_IOCP
1586# include "ev_iocp.c"
1587#endif
1137#if EV_USE_PORT 1588#if EV_USE_PORT
1138# include "ev_port.c" 1589# include "ev_port.c"
1139#endif 1590#endif
1140#if EV_USE_KQUEUE 1591#if EV_USE_KQUEUE
1141# include "ev_kqueue.c" 1592# include "ev_kqueue.c"
… …
1197 /* kqueue is borked on everything but netbsd apparently */ 1648 /* kqueue is borked on everything but netbsd apparently */
1198 /* it usually doesn't work correctly on anything but sockets and pipes */ 1649 /* it usually doesn't work correctly on anything but sockets and pipes */
1199 flags &= ~EVBACKEND_KQUEUE; 1650 flags &= ~EVBACKEND_KQUEUE;
1200#endif 1651#endif
1201#ifdef __APPLE__ 1652#ifdef __APPLE__
1202 // flags &= ~EVBACKEND_KQUEUE; for documentation 1653 /* only select works correctly on that "unix-certified" platform */
1203 flags &= ~EVBACKEND_POLL; 1654 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1655 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1656#endif
1657#ifdef __FreeBSD__
1658 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1204#endif 1659#endif
1205 1660
1206 return flags; 1661 return flags;
1207} 1662}
1208 1663
… …
1210ev_embeddable_backends (void) 1665ev_embeddable_backends (void)
1211{ 1666{
1212 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1667 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1213 1668
1214 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1669 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1215 /* please fix it and tell me how to detect the fix */ 1670 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1216 flags &= ~EVBACKEND_EPOLL; 1671 flags &= ~EVBACKEND_EPOLL;
1217 1672
1218 return flags; 1673 return flags;
1219} 1674}
1220 1675
1221unsigned int 1676unsigned int
1222ev_backend (EV_P) 1677ev_backend (EV_P)
1223{ 1678{
1224 return backend; 1679 return backend;
1225} 1680}
1226 1681
1682#if EV_FEATURE_API
1227unsigned int 1683unsigned int
1228ev_loop_count (EV_P) 1684ev_iteration (EV_P)
1229{ 1685{
1230 return loop_count; 1686 return loop_count;
1231} 1687}
1232 1688
1689unsigned int
1690ev_depth (EV_P)
1691{
1692 return loop_depth;
1693}
1694
1233void 1695void
1234ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1696ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1235{ 1697{
1236 io_blocktime = interval; 1698 io_blocktime = interval;
1237} 1699}
… …
1240ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1702ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1241{ 1703{
1242 timeout_blocktime = interval; 1704 timeout_blocktime = interval;
1243} 1705}
1244 1706
1707void
1708ev_set_userdata (EV_P_ void *data)
1709{
1710 userdata = data;
1711}
1712
1713void *
1714ev_userdata (EV_P)
1715{
1716 return userdata;
1717}
1718
1719void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1720{
1721 invoke_cb = invoke_pending_cb;
1722}
1723
1724void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1725{
1726 release_cb = release;
1727 acquire_cb = acquire;
1728}
1729#endif
1730
1731/* initialise a loop structure, must be zero-initialised */
1245static void noinline 1732static void noinline
1246loop_init (EV_P_ unsigned int flags) 1733loop_init (EV_P_ unsigned int flags)
1247{ 1734{
1248 if (!backend) 1735 if (!backend)
1249 { 1736 {
1737 origflags = flags;
1738
1739#if EV_USE_REALTIME
1740 if (!have_realtime)
1741 {
1742 struct timespec ts;
1743
1744 if (!clock_gettime (CLOCK_REALTIME, &ts))
1745 have_realtime = 1;
1746 }
1747#endif
1748
1250#if EV_USE_MONOTONIC 1749#if EV_USE_MONOTONIC
1750 if (!have_monotonic)
1251 { 1751 {
1252 struct timespec ts; 1752 struct timespec ts;
1753
1253 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1754 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1254 have_monotonic = 1; 1755 have_monotonic = 1;
1255 } 1756 }
1256#endif 1757#endif
1758
1759 /* pid check not overridable via env */
1760#ifndef _WIN32
1761 if (flags & EVFLAG_FORKCHECK)
1762 curpid = getpid ();
1763#endif
1764
1765 if (!(flags & EVFLAG_NOENV)
1766 && !enable_secure ()
1767 && getenv ("LIBEV_FLAGS"))
1768 flags = atoi (getenv ("LIBEV_FLAGS"));
1257 1769
1258 ev_rt_now = ev_time (); 1770 ev_rt_now = ev_time ();
1259 mn_now = get_clock (); 1771 mn_now = get_clock ();
1260 now_floor = mn_now; 1772 now_floor = mn_now;
1261 rtmn_diff = ev_rt_now - mn_now; 1773 rtmn_diff = ev_rt_now - mn_now;
1774#if EV_FEATURE_API
1775 invoke_cb = ev_invoke_pending;
1776#endif
1262 1777
1263 io_blocktime = 0.; 1778 io_blocktime = 0.;
1264 timeout_blocktime = 0.; 1779 timeout_blocktime = 0.;
1265 backend = 0; 1780 backend = 0;
1266 backend_fd = -1; 1781 backend_fd = -1;
1267 gotasync = 0; 1782 sig_pending = 0;
1783#if EV_ASYNC_ENABLE
1784 async_pending = 0;
1785#endif
1268#if EV_USE_INOTIFY 1786#if EV_USE_INOTIFY
1269 fs_fd = -2; 1787 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1270#endif 1788#endif
1271 1789#if EV_USE_SIGNALFD
1272 /* pid check not overridable via env */ 1790 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1273#ifndef _WIN32
1274 if (flags & EVFLAG_FORKCHECK)
1275 curpid = getpid ();
1276#endif 1791#endif
1277 1792
1278 if (!(flags & EVFLAG_NOENV) 1793 if (!(flags & EVBACKEND_MASK))
1279 && !enable_secure ()
1280 && getenv ("LIBEV_FLAGS"))
1281 flags = atoi (getenv ("LIBEV_FLAGS"));
1282
1283 if (!(flags & 0x0000ffffU))
1284 flags |= ev_recommended_backends (); 1794 flags |= ev_recommended_backends ();
1285 1795
1796#if EV_USE_IOCP
1797 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1798#endif
1286#if EV_USE_PORT 1799#if EV_USE_PORT
1287 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1800 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1288#endif 1801#endif
1289#if EV_USE_KQUEUE 1802#if EV_USE_KQUEUE
1290 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1803 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1297#endif 1810#endif
1298#if EV_USE_SELECT 1811#if EV_USE_SELECT
1299 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1812 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1300#endif 1813#endif
1301 1814
1815 ev_prepare_init (&pending_w, pendingcb);
1816
1817#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1302 ev_init (&pipeev, pipecb); 1818 ev_init (&pipe_w, pipecb);
1303 ev_set_priority (&pipeev, EV_MAXPRI); 1819 ev_set_priority (&pipe_w, EV_MAXPRI);
1820#endif
1304 } 1821 }
1305} 1822}
1306 1823
1307static void noinline 1824/* free up a loop structure */
1825void
1308loop_destroy (EV_P) 1826ev_loop_destroy (EV_P)
1309{ 1827{
1310 int i; 1828 int i;
1311 1829
1830#if EV_MULTIPLICITY
1831 /* mimic free (0) */
1832 if (!EV_A)
1833 return;
1834#endif
1835
1836#if EV_CLEANUP_ENABLE
1837 /* queue cleanup watchers (and execute them) */
1838 if (expect_false (cleanupcnt))
1839 {
1840 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1841 EV_INVOKE_PENDING;
1842 }
1843#endif
1844
1845#if EV_CHILD_ENABLE
1846 if (ev_is_active (&childev))
1847 {
1848 ev_ref (EV_A); /* child watcher */
1849 ev_signal_stop (EV_A_ &childev);
1850 }
1851#endif
1852
1312 if (ev_is_active (&pipeev)) 1853 if (ev_is_active (&pipe_w))
1313 { 1854 {
1314 ev_ref (EV_A); /* signal watcher */ 1855 /*ev_ref (EV_A);*/
1315 ev_io_stop (EV_A_ &pipeev); 1856 /*ev_io_stop (EV_A_ &pipe_w);*/
1316 1857
1317#if EV_USE_EVENTFD 1858#if EV_USE_EVENTFD
1318 if (evfd >= 0) 1859 if (evfd >= 0)
1319 close (evfd); 1860 close (evfd);
1320#endif 1861#endif
1321 1862
1322 if (evpipe [0] >= 0) 1863 if (evpipe [0] >= 0)
1323 { 1864 {
1324 close (evpipe [0]); 1865 EV_WIN32_CLOSE_FD (evpipe [0]);
1325 close (evpipe [1]); 1866 EV_WIN32_CLOSE_FD (evpipe [1]);
1326 } 1867 }
1327 } 1868 }
1869
1870#if EV_USE_SIGNALFD
1871 if (ev_is_active (&sigfd_w))
1872 close (sigfd);
1873#endif
1328 1874
1329#if EV_USE_INOTIFY 1875#if EV_USE_INOTIFY
1330 if (fs_fd >= 0) 1876 if (fs_fd >= 0)
1331 close (fs_fd); 1877 close (fs_fd);
1332#endif 1878#endif
1333 1879
1334 if (backend_fd >= 0) 1880 if (backend_fd >= 0)
1335 close (backend_fd); 1881 close (backend_fd);
1336 1882
1883#if EV_USE_IOCP
1884 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1885#endif
1337#if EV_USE_PORT 1886#if EV_USE_PORT
1338 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1887 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1339#endif 1888#endif
1340#if EV_USE_KQUEUE 1889#if EV_USE_KQUEUE
1341 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1890 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1356#if EV_IDLE_ENABLE 1905#if EV_IDLE_ENABLE
1357 array_free (idle, [i]); 1906 array_free (idle, [i]);
1358#endif 1907#endif
1359 } 1908 }
1360 1909
1361 ev_free (anfds); anfdmax = 0; 1910 ev_free (anfds); anfds = 0; anfdmax = 0;
1362 1911
1363 /* have to use the microsoft-never-gets-it-right macro */ 1912 /* have to use the microsoft-never-gets-it-right macro */
1913 array_free (rfeed, EMPTY);
1364 array_free (fdchange, EMPTY); 1914 array_free (fdchange, EMPTY);
1365 array_free (timer, EMPTY); 1915 array_free (timer, EMPTY);
1366#if EV_PERIODIC_ENABLE 1916#if EV_PERIODIC_ENABLE
1367 array_free (periodic, EMPTY); 1917 array_free (periodic, EMPTY);
1368#endif 1918#endif
1369#if EV_FORK_ENABLE 1919#if EV_FORK_ENABLE
1370 array_free (fork, EMPTY); 1920 array_free (fork, EMPTY);
1371#endif 1921#endif
1922#if EV_CLEANUP_ENABLE
1923 array_free (cleanup, EMPTY);
1924#endif
1372 array_free (prepare, EMPTY); 1925 array_free (prepare, EMPTY);
1373 array_free (check, EMPTY); 1926 array_free (check, EMPTY);
1374#if EV_ASYNC_ENABLE 1927#if EV_ASYNC_ENABLE
1375 array_free (async, EMPTY); 1928 array_free (async, EMPTY);
1376#endif 1929#endif
1377 1930
1378 backend = 0; 1931 backend = 0;
1932
1933#if EV_MULTIPLICITY
1934 if (ev_is_default_loop (EV_A))
1935#endif
1936 ev_default_loop_ptr = 0;
1937#if EV_MULTIPLICITY
1938 else
1939 ev_free (EV_A);
1940#endif
1379} 1941}
1380 1942
1381#if EV_USE_INOTIFY 1943#if EV_USE_INOTIFY
1382void inline_size infy_fork (EV_P); 1944inline_size void infy_fork (EV_P);
1383#endif 1945#endif
1384 1946
1385void inline_size 1947inline_size void
1386loop_fork (EV_P) 1948loop_fork (EV_P)
1387{ 1949{
1388#if EV_USE_PORT 1950#if EV_USE_PORT
1389 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1951 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1390#endif 1952#endif
… …
1396#endif 1958#endif
1397#if EV_USE_INOTIFY 1959#if EV_USE_INOTIFY
1398 infy_fork (EV_A); 1960 infy_fork (EV_A);
1399#endif 1961#endif
1400 1962
1401 if (ev_is_active (&pipeev)) 1963 if (ev_is_active (&pipe_w))
1402 { 1964 {
1403 /* this "locks" the handlers against writing to the pipe */ 1965 /* this "locks" the handlers against writing to the pipe */
1404 /* while we modify the fd vars */ 1966 /* while we modify the fd vars */
1405 gotsig = 1; 1967 sig_pending = 1;
1406#if EV_ASYNC_ENABLE 1968#if EV_ASYNC_ENABLE
1407 gotasync = 1; 1969 async_pending = 1;
1408#endif 1970#endif
1409 1971
1410 ev_ref (EV_A); 1972 ev_ref (EV_A);
1411 ev_io_stop (EV_A_ &pipeev); 1973 ev_io_stop (EV_A_ &pipe_w);
1412 1974
1413#if EV_USE_EVENTFD 1975#if EV_USE_EVENTFD
1414 if (evfd >= 0) 1976 if (evfd >= 0)
1415 close (evfd); 1977 close (evfd);
1416#endif 1978#endif
1417 1979
1418 if (evpipe [0] >= 0) 1980 if (evpipe [0] >= 0)
1419 { 1981 {
1420 close (evpipe [0]); 1982 EV_WIN32_CLOSE_FD (evpipe [0]);
1421 close (evpipe [1]); 1983 EV_WIN32_CLOSE_FD (evpipe [1]);
1422 } 1984 }
1423 1985
1986#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1424 evpipe_init (EV_A); 1987 evpipe_init (EV_A);
1425 /* now iterate over everything, in case we missed something */ 1988 /* now iterate over everything, in case we missed something */
1426 pipecb (EV_A_ &pipeev, EV_READ); 1989 pipecb (EV_A_ &pipe_w, EV_READ);
1990#endif
1427 } 1991 }
1428 1992
1429 postfork = 0; 1993 postfork = 0;
1430} 1994}
1995
1996#if EV_MULTIPLICITY
1997
1998struct ev_loop *
1999ev_loop_new (unsigned int flags)
2000{
2001 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2002
2003 memset (EV_A, 0, sizeof (struct ev_loop));
2004 loop_init (EV_A_ flags);
2005
2006 if (ev_backend (EV_A))
2007 return EV_A;
2008
2009 ev_free (EV_A);
2010 return 0;
2011}
2012
2013#endif /* multiplicity */
2014
2015#if EV_VERIFY
2016static void noinline
2017verify_watcher (EV_P_ W w)
2018{
2019 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2020
2021 if (w->pending)
2022 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2023}
2024
2025static void noinline
2026verify_heap (EV_P_ ANHE *heap, int N)
2027{
2028 int i;
2029
2030 for (i = HEAP0; i < N + HEAP0; ++i)
2031 {
2032 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
2033 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
2034 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
2035
2036 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2037 }
2038}
2039
2040static void noinline
2041array_verify (EV_P_ W *ws, int cnt)
2042{
2043 while (cnt--)
2044 {
2045 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
2046 verify_watcher (EV_A_ ws [cnt]);
2047 }
2048}
2049#endif
2050
2051#if EV_FEATURE_API
2052void
2053ev_verify (EV_P)
2054{
2055#if EV_VERIFY
2056 int i;
2057 WL w;
2058
2059 assert (activecnt >= -1);
2060
2061 assert (fdchangemax >= fdchangecnt);
2062 for (i = 0; i < fdchangecnt; ++i)
2063 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2064
2065 assert (anfdmax >= 0);
2066 for (i = 0; i < anfdmax; ++i)
2067 for (w = anfds [i].head; w; w = w->next)
2068 {
2069 verify_watcher (EV_A_ (W)w);
2070 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2071 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2072 }
2073
2074 assert (timermax >= timercnt);
2075 verify_heap (EV_A_ timers, timercnt);
2076
2077#if EV_PERIODIC_ENABLE
2078 assert (periodicmax >= periodiccnt);
2079 verify_heap (EV_A_ periodics, periodiccnt);
2080#endif
2081
2082 for (i = NUMPRI; i--; )
2083 {
2084 assert (pendingmax [i] >= pendingcnt [i]);
2085#if EV_IDLE_ENABLE
2086 assert (idleall >= 0);
2087 assert (idlemax [i] >= idlecnt [i]);
2088 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
2089#endif
2090 }
2091
2092#if EV_FORK_ENABLE
2093 assert (forkmax >= forkcnt);
2094 array_verify (EV_A_ (W *)forks, forkcnt);
2095#endif
2096
2097#if EV_CLEANUP_ENABLE
2098 assert (cleanupmax >= cleanupcnt);
2099 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2100#endif
2101
2102#if EV_ASYNC_ENABLE
2103 assert (asyncmax >= asynccnt);
2104 array_verify (EV_A_ (W *)asyncs, asynccnt);
2105#endif
2106
2107#if EV_PREPARE_ENABLE
2108 assert (preparemax >= preparecnt);
2109 array_verify (EV_A_ (W *)prepares, preparecnt);
2110#endif
2111
2112#if EV_CHECK_ENABLE
2113 assert (checkmax >= checkcnt);
2114 array_verify (EV_A_ (W *)checks, checkcnt);
2115#endif
2116
2117# if 0
2118#if EV_CHILD_ENABLE
2119 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2120 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2121#endif
2122# endif
2123#endif
2124}
2125#endif
1431 2126
1432#if EV_MULTIPLICITY 2127#if EV_MULTIPLICITY
1433struct ev_loop * 2128struct ev_loop *
1434ev_loop_new (unsigned int flags)
1435{
1436 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1437
1438 memset (loop, 0, sizeof (struct ev_loop));
1439
1440 loop_init (EV_A_ flags);
1441
1442 if (ev_backend (EV_A))
1443 return loop;
1444
1445 return 0;
1446}
1447
1448void
1449ev_loop_destroy (EV_P)
1450{
1451 loop_destroy (EV_A);
1452 ev_free (loop);
1453}
1454
1455void
1456ev_loop_fork (EV_P)
1457{
1458 postfork = 1; /* must be in line with ev_default_fork */
1459}
1460#endif
1461
1462#if EV_MULTIPLICITY
1463struct ev_loop *
1464ev_default_loop_init (unsigned int flags)
1465#else 2129#else
1466int 2130int
2131#endif
1467ev_default_loop (unsigned int flags) 2132ev_default_loop (unsigned int flags)
1468#endif
1469{ 2133{
1470 if (!ev_default_loop_ptr) 2134 if (!ev_default_loop_ptr)
1471 { 2135 {
1472#if EV_MULTIPLICITY 2136#if EV_MULTIPLICITY
1473 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2137 EV_P = ev_default_loop_ptr = &default_loop_struct;
1474#else 2138#else
1475 ev_default_loop_ptr = 1; 2139 ev_default_loop_ptr = 1;
1476#endif 2140#endif
1477 2141
1478 loop_init (EV_A_ flags); 2142 loop_init (EV_A_ flags);
1479 2143
1480 if (ev_backend (EV_A)) 2144 if (ev_backend (EV_A))
1481 { 2145 {
1482#ifndef _WIN32 2146#if EV_CHILD_ENABLE
1483 ev_signal_init (&childev, childcb, SIGCHLD); 2147 ev_signal_init (&childev, childcb, SIGCHLD);
1484 ev_set_priority (&childev, EV_MAXPRI); 2148 ev_set_priority (&childev, EV_MAXPRI);
1485 ev_signal_start (EV_A_ &childev); 2149 ev_signal_start (EV_A_ &childev);
1486 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2150 ev_unref (EV_A); /* child watcher should not keep loop alive */
1487#endif 2151#endif
… …
1492 2156
1493 return ev_default_loop_ptr; 2157 return ev_default_loop_ptr;
1494} 2158}
1495 2159
1496void 2160void
1497ev_default_destroy (void) 2161ev_loop_fork (EV_P)
1498{ 2162{
1499#if EV_MULTIPLICITY
1500 struct ev_loop *loop = ev_default_loop_ptr;
1501#endif
1502
1503#ifndef _WIN32
1504 ev_ref (EV_A); /* child watcher */
1505 ev_signal_stop (EV_A_ &childev);
1506#endif
1507
1508 loop_destroy (EV_A);
1509}
1510
1511void
1512ev_default_fork (void)
1513{
1514#if EV_MULTIPLICITY
1515 struct ev_loop *loop = ev_default_loop_ptr;
1516#endif
1517
1518 if (backend)
1519 postfork = 1; /* must be in line with ev_loop_fork */ 2163 postfork = 1; /* must be in line with ev_default_fork */
1520} 2164}
1521 2165
1522/*****************************************************************************/ 2166/*****************************************************************************/
1523 2167
1524void 2168void
1525ev_invoke (EV_P_ void *w, int revents) 2169ev_invoke (EV_P_ void *w, int revents)
1526{ 2170{
1527 EV_CB_INVOKE ((W)w, revents); 2171 EV_CB_INVOKE ((W)w, revents);
1528} 2172}
1529 2173
1530void inline_speed 2174unsigned int
1531call_pending (EV_P) 2175ev_pending_count (EV_P)
2176{
2177 int pri;
2178 unsigned int count = 0;
2179
2180 for (pri = NUMPRI; pri--; )
2181 count += pendingcnt [pri];
2182
2183 return count;
2184}
2185
2186void noinline
2187ev_invoke_pending (EV_P)
1532{ 2188{
1533 int pri; 2189 int pri;
1534 2190
1535 for (pri = NUMPRI; pri--; ) 2191 for (pri = NUMPRI; pri--; )
1536 while (pendingcnt [pri]) 2192 while (pendingcnt [pri])
1537 { 2193 {
1538 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2194 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1539 2195
1540 if (expect_true (p->w))
1541 {
1542 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1543
1544 p->w->pending = 0; 2196 p->w->pending = 0;
1545 EV_CB_INVOKE (p->w, p->events); 2197 EV_CB_INVOKE (p->w, p->events);
1546 } 2198 EV_FREQUENT_CHECK;
1547 } 2199 }
1548} 2200}
1549 2201
1550#if EV_IDLE_ENABLE 2202#if EV_IDLE_ENABLE
1551void inline_size 2203/* make idle watchers pending. this handles the "call-idle */
2204/* only when higher priorities are idle" logic */
2205inline_size void
1552idle_reify (EV_P) 2206idle_reify (EV_P)
1553{ 2207{
1554 if (expect_false (idleall)) 2208 if (expect_false (idleall))
1555 { 2209 {
1556 int pri; 2210 int pri;
… …
1568 } 2222 }
1569 } 2223 }
1570} 2224}
1571#endif 2225#endif
1572 2226
1573void inline_size 2227/* make timers pending */
2228inline_size void
1574timers_reify (EV_P) 2229timers_reify (EV_P)
1575{ 2230{
2231 EV_FREQUENT_CHECK;
2232
1576 while (timercnt && ev_at (timers [HEAP0]) <= mn_now) 2233 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1577 { 2234 {
1578 ev_timer *w = (ev_timer *)timers [HEAP0]; 2235 do
1579
1580 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1581
1582 /* first reschedule or stop timer */
1583 if (w->repeat)
1584 { 2236 {
2237 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2238
2239 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2240
2241 /* first reschedule or stop timer */
2242 if (w->repeat)
2243 {
2244 ev_at (w) += w->repeat;
2245 if (ev_at (w) < mn_now)
2246 ev_at (w) = mn_now;
2247
1585 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2248 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1586 2249
1587 ev_at (w) += w->repeat; 2250 ANHE_at_cache (timers [HEAP0]);
1588 if (ev_at (w) < mn_now)
1589 ev_at (w) = mn_now;
1590
1591 downheap (timers, timercnt, HEAP0); 2251 downheap (timers, timercnt, HEAP0);
2252 }
2253 else
2254 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2255
2256 EV_FREQUENT_CHECK;
2257 feed_reverse (EV_A_ (W)w);
1592 } 2258 }
1593 else 2259 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1594 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1595 2260
1596 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 2261 feed_reverse_done (EV_A_ EV_TIMER);
1597 } 2262 }
1598} 2263}
1599 2264
1600#if EV_PERIODIC_ENABLE 2265#if EV_PERIODIC_ENABLE
1601void inline_size 2266
2267static void noinline
2268periodic_recalc (EV_P_ ev_periodic *w)
2269{
2270 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2271 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2272
2273 /* the above almost always errs on the low side */
2274 while (at <= ev_rt_now)
2275 {
2276 ev_tstamp nat = at + w->interval;
2277
2278 /* when resolution fails us, we use ev_rt_now */
2279 if (expect_false (nat == at))
2280 {
2281 at = ev_rt_now;
2282 break;
2283 }
2284
2285 at = nat;
2286 }
2287
2288 ev_at (w) = at;
2289}
2290
2291/* make periodics pending */
2292inline_size void
1602periodics_reify (EV_P) 2293periodics_reify (EV_P)
1603{ 2294{
2295 EV_FREQUENT_CHECK;
2296
1604 while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now) 2297 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1605 { 2298 {
1606 ev_periodic *w = (ev_periodic *)periodics [HEAP0]; 2299 int feed_count = 0;
1607 2300
1608 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2301 do
1609
1610 /* first reschedule or stop timer */
1611 if (w->reschedule_cb)
1612 { 2302 {
2303 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2304
2305 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2306
2307 /* first reschedule or stop timer */
2308 if (w->reschedule_cb)
2309 {
1613 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); 2310 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2311
1614 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now)); 2312 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2313
2314 ANHE_at_cache (periodics [HEAP0]);
1615 downheap (periodics, periodiccnt, 1); 2315 downheap (periodics, periodiccnt, HEAP0);
2316 }
2317 else if (w->interval)
2318 {
2319 periodic_recalc (EV_A_ w);
2320 ANHE_at_cache (periodics [HEAP0]);
2321 downheap (periodics, periodiccnt, HEAP0);
2322 }
2323 else
2324 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2325
2326 EV_FREQUENT_CHECK;
2327 feed_reverse (EV_A_ (W)w);
1616 } 2328 }
1617 else if (w->interval) 2329 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1618 {
1619 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1620 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1621 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1622 downheap (periodics, periodiccnt, HEAP0);
1623 }
1624 else
1625 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1626 2330
1627 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2331 feed_reverse_done (EV_A_ EV_PERIODIC);
1628 } 2332 }
1629} 2333}
1630 2334
2335/* simply recalculate all periodics */
2336/* TODO: maybe ensure that at least one event happens when jumping forward? */
1631static void noinline 2337static void noinline
1632periodics_reschedule (EV_P) 2338periodics_reschedule (EV_P)
1633{ 2339{
1634 int i; 2340 int i;
1635 2341
1636 /* adjust periodics after time jump */ 2342 /* adjust periodics after time jump */
1637 for (i = 1; i <= periodiccnt; ++i) 2343 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1638 { 2344 {
1639 ev_periodic *w = (ev_periodic *)periodics [i]; 2345 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1640 2346
1641 if (w->reschedule_cb) 2347 if (w->reschedule_cb)
1642 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2348 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1643 else if (w->interval) 2349 else if (w->interval)
1644 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2350 periodic_recalc (EV_A_ w);
2351
2352 ANHE_at_cache (periodics [i]);
2353 }
2354
2355 reheap (periodics, periodiccnt);
2356}
2357#endif
2358
2359/* adjust all timers by a given offset */
2360static void noinline
2361timers_reschedule (EV_P_ ev_tstamp adjust)
2362{
2363 int i;
2364
2365 for (i = 0; i < timercnt; ++i)
1645 } 2366 {
1646 2367 ANHE *he = timers + i + HEAP0;
1647 /* now rebuild the heap */ 2368 ANHE_w (*he)->at += adjust;
1648 for (i = periodiccnt >> 1; --i; ) 2369 ANHE_at_cache (*he);
1649 downheap (periodics, periodiccnt, i + HEAP0); 2370 }
1650} 2371}
1651#endif
1652 2372
1653void inline_speed 2373/* fetch new monotonic and realtime times from the kernel */
2374/* also detect if there was a timejump, and act accordingly */
2375inline_speed void
1654time_update (EV_P_ ev_tstamp max_block) 2376time_update (EV_P_ ev_tstamp max_block)
1655{ 2377{
1656 int i;
1657
1658#if EV_USE_MONOTONIC 2378#if EV_USE_MONOTONIC
1659 if (expect_true (have_monotonic)) 2379 if (expect_true (have_monotonic))
1660 { 2380 {
2381 int i;
1661 ev_tstamp odiff = rtmn_diff; 2382 ev_tstamp odiff = rtmn_diff;
1662 2383
1663 mn_now = get_clock (); 2384 mn_now = get_clock ();
1664 2385
1665 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2386 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1681 * doesn't hurt either as we only do this on time-jumps or 2402 * doesn't hurt either as we only do this on time-jumps or
1682 * in the unlikely event of having been preempted here. 2403 * in the unlikely event of having been preempted here.
1683 */ 2404 */
1684 for (i = 4; --i; ) 2405 for (i = 4; --i; )
1685 { 2406 {
2407 ev_tstamp diff;
1686 rtmn_diff = ev_rt_now - mn_now; 2408 rtmn_diff = ev_rt_now - mn_now;
1687 2409
2410 diff = odiff - rtmn_diff;
2411
1688 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2412 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1689 return; /* all is well */ 2413 return; /* all is well */
1690 2414
1691 ev_rt_now = ev_time (); 2415 ev_rt_now = ev_time ();
1692 mn_now = get_clock (); 2416 mn_now = get_clock ();
1693 now_floor = mn_now; 2417 now_floor = mn_now;
1694 } 2418 }
1695 2419
2420 /* no timer adjustment, as the monotonic clock doesn't jump */
2421 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1696# if EV_PERIODIC_ENABLE 2422# if EV_PERIODIC_ENABLE
1697 periodics_reschedule (EV_A); 2423 periodics_reschedule (EV_A);
1698# endif 2424# endif
1699 /* no timer adjustment, as the monotonic clock doesn't jump */
1700 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1701 } 2425 }
1702 else 2426 else
1703#endif 2427#endif
1704 { 2428 {
1705 ev_rt_now = ev_time (); 2429 ev_rt_now = ev_time ();
1706 2430
1707 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2431 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1708 { 2432 {
2433 /* adjust timers. this is easy, as the offset is the same for all of them */
2434 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1709#if EV_PERIODIC_ENABLE 2435#if EV_PERIODIC_ENABLE
1710 periodics_reschedule (EV_A); 2436 periodics_reschedule (EV_A);
1711#endif 2437#endif
1712 /* adjust timers. this is easy, as the offset is the same for all of them */
1713 for (i = 1; i <= timercnt; ++i)
1714 ev_at (timers [i]) += ev_rt_now - mn_now;
1715 } 2438 }
1716 2439
1717 mn_now = ev_rt_now; 2440 mn_now = ev_rt_now;
1718 } 2441 }
1719} 2442}
1720 2443
1721void 2444void
1722ev_ref (EV_P)
1723{
1724 ++activecnt;
1725}
1726
1727void
1728ev_unref (EV_P)
1729{
1730 --activecnt;
1731}
1732
1733static int loop_done;
1734
1735void
1736ev_loop (EV_P_ int flags) 2445ev_run (EV_P_ int flags)
1737{ 2446{
2447#if EV_FEATURE_API
2448 ++loop_depth;
2449#endif
2450
2451 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2452
1738 loop_done = EVUNLOOP_CANCEL; 2453 loop_done = EVBREAK_CANCEL;
1739 2454
1740 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2455 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1741 2456
1742 do 2457 do
1743 { 2458 {
2459#if EV_VERIFY >= 2
2460 ev_verify (EV_A);
2461#endif
2462
1744#ifndef _WIN32 2463#ifndef _WIN32
1745 if (expect_false (curpid)) /* penalise the forking check even more */ 2464 if (expect_false (curpid)) /* penalise the forking check even more */
1746 if (expect_false (getpid () != curpid)) 2465 if (expect_false (getpid () != curpid))
1747 { 2466 {
1748 curpid = getpid (); 2467 curpid = getpid ();
… …
1754 /* we might have forked, so queue fork handlers */ 2473 /* we might have forked, so queue fork handlers */
1755 if (expect_false (postfork)) 2474 if (expect_false (postfork))
1756 if (forkcnt) 2475 if (forkcnt)
1757 { 2476 {
1758 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2477 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1759 call_pending (EV_A); 2478 EV_INVOKE_PENDING;
1760 } 2479 }
1761#endif 2480#endif
1762 2481
2482#if EV_PREPARE_ENABLE
1763 /* queue prepare watchers (and execute them) */ 2483 /* queue prepare watchers (and execute them) */
1764 if (expect_false (preparecnt)) 2484 if (expect_false (preparecnt))
1765 { 2485 {
1766 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2486 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1767 call_pending (EV_A); 2487 EV_INVOKE_PENDING;
1768 } 2488 }
2489#endif
1769 2490
1770 if (expect_false (!activecnt)) 2491 if (expect_false (loop_done))
1771 break; 2492 break;
1772 2493
1773 /* we might have forked, so reify kernel state if necessary */ 2494 /* we might have forked, so reify kernel state if necessary */
1774 if (expect_false (postfork)) 2495 if (expect_false (postfork))
1775 loop_fork (EV_A); 2496 loop_fork (EV_A);
… …
1780 /* calculate blocking time */ 2501 /* calculate blocking time */
1781 { 2502 {
1782 ev_tstamp waittime = 0.; 2503 ev_tstamp waittime = 0.;
1783 ev_tstamp sleeptime = 0.; 2504 ev_tstamp sleeptime = 0.;
1784 2505
2506 /* remember old timestamp for io_blocktime calculation */
2507 ev_tstamp prev_mn_now = mn_now;
2508
2509 /* update time to cancel out callback processing overhead */
2510 time_update (EV_A_ 1e100);
2511
1785 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2512 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1786 { 2513 {
1787 /* update time to cancel out callback processing overhead */
1788 time_update (EV_A_ 1e100);
1789
1790 waittime = MAX_BLOCKTIME; 2514 waittime = MAX_BLOCKTIME;
1791 2515
1792 if (timercnt) 2516 if (timercnt)
1793 { 2517 {
1794 ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge; 2518 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1795 if (waittime > to) waittime = to; 2519 if (waittime > to) waittime = to;
1796 } 2520 }
1797 2521
1798#if EV_PERIODIC_ENABLE 2522#if EV_PERIODIC_ENABLE
1799 if (periodiccnt) 2523 if (periodiccnt)
1800 { 2524 {
1801 ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2525 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1802 if (waittime > to) waittime = to; 2526 if (waittime > to) waittime = to;
1803 } 2527 }
1804#endif 2528#endif
1805 2529
2530 /* don't let timeouts decrease the waittime below timeout_blocktime */
1806 if (expect_false (waittime < timeout_blocktime)) 2531 if (expect_false (waittime < timeout_blocktime))
1807 waittime = timeout_blocktime; 2532 waittime = timeout_blocktime;
1808 2533
1809 sleeptime = waittime - backend_fudge; 2534 /* extra check because io_blocktime is commonly 0 */
1810
1811 if (expect_true (sleeptime > io_blocktime)) 2535 if (expect_false (io_blocktime))
1812 sleeptime = io_blocktime;
1813
1814 if (sleeptime)
1815 { 2536 {
2537 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2538
2539 if (sleeptime > waittime - backend_fudge)
2540 sleeptime = waittime - backend_fudge;
2541
2542 if (expect_true (sleeptime > 0.))
2543 {
1816 ev_sleep (sleeptime); 2544 ev_sleep (sleeptime);
1817 waittime -= sleeptime; 2545 waittime -= sleeptime;
2546 }
1818 } 2547 }
1819 } 2548 }
1820 2549
2550#if EV_FEATURE_API
1821 ++loop_count; 2551 ++loop_count;
2552#endif
2553 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1822 backend_poll (EV_A_ waittime); 2554 backend_poll (EV_A_ waittime);
2555 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
1823 2556
1824 /* update ev_rt_now, do magic */ 2557 /* update ev_rt_now, do magic */
1825 time_update (EV_A_ waittime + sleeptime); 2558 time_update (EV_A_ waittime + sleeptime);
1826 } 2559 }
1827 2560
… …
1834#if EV_IDLE_ENABLE 2567#if EV_IDLE_ENABLE
1835 /* queue idle watchers unless other events are pending */ 2568 /* queue idle watchers unless other events are pending */
1836 idle_reify (EV_A); 2569 idle_reify (EV_A);
1837#endif 2570#endif
1838 2571
2572#if EV_CHECK_ENABLE
1839 /* queue check watchers, to be executed first */ 2573 /* queue check watchers, to be executed first */
1840 if (expect_false (checkcnt)) 2574 if (expect_false (checkcnt))
1841 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2575 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2576#endif
1842 2577
1843 call_pending (EV_A); 2578 EV_INVOKE_PENDING;
1844 } 2579 }
1845 while (expect_true ( 2580 while (expect_true (
1846 activecnt 2581 activecnt
1847 && !loop_done 2582 && !loop_done
1848 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2583 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1849 )); 2584 ));
1850 2585
1851 if (loop_done == EVUNLOOP_ONE) 2586 if (loop_done == EVBREAK_ONE)
1852 loop_done = EVUNLOOP_CANCEL; 2587 loop_done = EVBREAK_CANCEL;
1853}
1854 2588
2589#if EV_FEATURE_API
2590 --loop_depth;
2591#endif
2592}
2593
1855void 2594void
1856ev_unloop (EV_P_ int how) 2595ev_break (EV_P_ int how)
1857{ 2596{
1858 loop_done = how; 2597 loop_done = how;
1859} 2598}
1860 2599
2600void
2601ev_ref (EV_P)
2602{
2603 ++activecnt;
2604}
2605
2606void
2607ev_unref (EV_P)
2608{
2609 --activecnt;
2610}
2611
2612void
2613ev_now_update (EV_P)
2614{
2615 time_update (EV_A_ 1e100);
2616}
2617
2618void
2619ev_suspend (EV_P)
2620{
2621 ev_now_update (EV_A);
2622}
2623
2624void
2625ev_resume (EV_P)
2626{
2627 ev_tstamp mn_prev = mn_now;
2628
2629 ev_now_update (EV_A);
2630 timers_reschedule (EV_A_ mn_now - mn_prev);
2631#if EV_PERIODIC_ENABLE
2632 /* TODO: really do this? */
2633 periodics_reschedule (EV_A);
2634#endif
2635}
2636
1861/*****************************************************************************/ 2637/*****************************************************************************/
2638/* singly-linked list management, used when the expected list length is short */
1862 2639
1863void inline_size 2640inline_size void
1864wlist_add (WL *head, WL elem) 2641wlist_add (WL *head, WL elem)
1865{ 2642{
1866 elem->next = *head; 2643 elem->next = *head;
1867 *head = elem; 2644 *head = elem;
1868} 2645}
1869 2646
1870void inline_size 2647inline_size void
1871wlist_del (WL *head, WL elem) 2648wlist_del (WL *head, WL elem)
1872{ 2649{
1873 while (*head) 2650 while (*head)
1874 { 2651 {
1875 if (*head == elem) 2652 if (expect_true (*head == elem))
1876 { 2653 {
1877 *head = elem->next; 2654 *head = elem->next;
1878 return; 2655 break;
1879 } 2656 }
1880 2657
1881 head = &(*head)->next; 2658 head = &(*head)->next;
1882 } 2659 }
1883} 2660}
1884 2661
1885void inline_speed 2662/* internal, faster, version of ev_clear_pending */
2663inline_speed void
1886clear_pending (EV_P_ W w) 2664clear_pending (EV_P_ W w)
1887{ 2665{
1888 if (w->pending) 2666 if (w->pending)
1889 { 2667 {
1890 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2668 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1891 w->pending = 0; 2669 w->pending = 0;
1892 } 2670 }
1893} 2671}
1894 2672
1895int 2673int
… …
1899 int pending = w_->pending; 2677 int pending = w_->pending;
1900 2678
1901 if (expect_true (pending)) 2679 if (expect_true (pending))
1902 { 2680 {
1903 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2681 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2682 p->w = (W)&pending_w;
1904 w_->pending = 0; 2683 w_->pending = 0;
1905 p->w = 0;
1906 return p->events; 2684 return p->events;
1907 } 2685 }
1908 else 2686 else
1909 return 0; 2687 return 0;
1910} 2688}
1911 2689
1912void inline_size 2690inline_size void
1913pri_adjust (EV_P_ W w) 2691pri_adjust (EV_P_ W w)
1914{ 2692{
1915 int pri = w->priority; 2693 int pri = ev_priority (w);
1916 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2694 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1917 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2695 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1918 w->priority = pri; 2696 ev_set_priority (w, pri);
1919} 2697}
1920 2698
1921void inline_speed 2699inline_speed void
1922ev_start (EV_P_ W w, int active) 2700ev_start (EV_P_ W w, int active)
1923{ 2701{
1924 pri_adjust (EV_A_ w); 2702 pri_adjust (EV_A_ w);
1925 w->active = active; 2703 w->active = active;
1926 ev_ref (EV_A); 2704 ev_ref (EV_A);
1927} 2705}
1928 2706
1929void inline_size 2707inline_size void
1930ev_stop (EV_P_ W w) 2708ev_stop (EV_P_ W w)
1931{ 2709{
1932 ev_unref (EV_A); 2710 ev_unref (EV_A);
1933 w->active = 0; 2711 w->active = 0;
1934} 2712}
… …
1941 int fd = w->fd; 2719 int fd = w->fd;
1942 2720
1943 if (expect_false (ev_is_active (w))) 2721 if (expect_false (ev_is_active (w)))
1944 return; 2722 return;
1945 2723
1946 assert (("ev_io_start called with negative fd", fd >= 0)); 2724 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2725 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2726
2727 EV_FREQUENT_CHECK;
1947 2728
1948 ev_start (EV_A_ (W)w, 1); 2729 ev_start (EV_A_ (W)w, 1);
1949 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2730 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1950 wlist_add (&anfds[fd].head, (WL)w); 2731 wlist_add (&anfds[fd].head, (WL)w);
1951 2732
1952 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2733 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1953 w->events &= ~EV_IOFDSET; 2734 w->events &= ~EV__IOFDSET;
2735
2736 EV_FREQUENT_CHECK;
1954} 2737}
1955 2738
1956void noinline 2739void noinline
1957ev_io_stop (EV_P_ ev_io *w) 2740ev_io_stop (EV_P_ ev_io *w)
1958{ 2741{
1959 clear_pending (EV_A_ (W)w); 2742 clear_pending (EV_A_ (W)w);
1960 if (expect_false (!ev_is_active (w))) 2743 if (expect_false (!ev_is_active (w)))
1961 return; 2744 return;
1962 2745
1963 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2746 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2747
2748 EV_FREQUENT_CHECK;
1964 2749
1965 wlist_del (&anfds[w->fd].head, (WL)w); 2750 wlist_del (&anfds[w->fd].head, (WL)w);
1966 ev_stop (EV_A_ (W)w); 2751 ev_stop (EV_A_ (W)w);
1967 2752
1968 fd_change (EV_A_ w->fd, 1); 2753 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2754
2755 EV_FREQUENT_CHECK;
1969} 2756}
1970 2757
1971void noinline 2758void noinline
1972ev_timer_start (EV_P_ ev_timer *w) 2759ev_timer_start (EV_P_ ev_timer *w)
1973{ 2760{
1974 if (expect_false (ev_is_active (w))) 2761 if (expect_false (ev_is_active (w)))
1975 return; 2762 return;
1976 2763
1977 ev_at (w) += mn_now; 2764 ev_at (w) += mn_now;
1978 2765
1979 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2766 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1980 2767
2768 EV_FREQUENT_CHECK;
2769
2770 ++timercnt;
1981 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); 2771 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1982 array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2); 2772 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1983 timers [ev_active (w)] = (WT)w; 2773 ANHE_w (timers [ev_active (w)]) = (WT)w;
2774 ANHE_at_cache (timers [ev_active (w)]);
1984 upheap (timers, ev_active (w)); 2775 upheap (timers, ev_active (w));
1985 2776
2777 EV_FREQUENT_CHECK;
2778
1986 /*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/ 2779 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1987} 2780}
1988 2781
1989void noinline 2782void noinline
1990ev_timer_stop (EV_P_ ev_timer *w) 2783ev_timer_stop (EV_P_ ev_timer *w)
1991{ 2784{
1992 clear_pending (EV_A_ (W)w); 2785 clear_pending (EV_A_ (W)w);
1993 if (expect_false (!ev_is_active (w))) 2786 if (expect_false (!ev_is_active (w)))
1994 return; 2787 return;
1995 2788
2789 EV_FREQUENT_CHECK;
2790
1996 { 2791 {
1997 int active = ev_active (w); 2792 int active = ev_active (w);
1998 2793
1999 assert (("internal timer heap corruption", timers [active] == (WT)w)); 2794 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2000 2795
2796 --timercnt;
2797
2001 if (expect_true (active < timercnt + HEAP0 - 1)) 2798 if (expect_true (active < timercnt + HEAP0))
2002 { 2799 {
2003 timers [active] = timers [timercnt + HEAP0 - 1]; 2800 timers [active] = timers [timercnt + HEAP0];
2004 adjustheap (timers, timercnt, active); 2801 adjustheap (timers, timercnt, active);
2005 } 2802 }
2006
2007 --timercnt;
2008 } 2803 }
2009 2804
2010 ev_at (w) -= mn_now; 2805 ev_at (w) -= mn_now;
2011 2806
2012 ev_stop (EV_A_ (W)w); 2807 ev_stop (EV_A_ (W)w);
2808
2809 EV_FREQUENT_CHECK;
2013} 2810}
2014 2811
2015void noinline 2812void noinline
2016ev_timer_again (EV_P_ ev_timer *w) 2813ev_timer_again (EV_P_ ev_timer *w)
2017{ 2814{
2815 EV_FREQUENT_CHECK;
2816
2018 if (ev_is_active (w)) 2817 if (ev_is_active (w))
2019 { 2818 {
2020 if (w->repeat) 2819 if (w->repeat)
2021 { 2820 {
2022 ev_at (w) = mn_now + w->repeat; 2821 ev_at (w) = mn_now + w->repeat;
2822 ANHE_at_cache (timers [ev_active (w)]);
2023 adjustheap (timers, timercnt, ev_active (w)); 2823 adjustheap (timers, timercnt, ev_active (w));
2024 } 2824 }
2025 else 2825 else
2026 ev_timer_stop (EV_A_ w); 2826 ev_timer_stop (EV_A_ w);
2027 } 2827 }
2028 else if (w->repeat) 2828 else if (w->repeat)
2029 { 2829 {
2030 ev_at (w) = w->repeat; 2830 ev_at (w) = w->repeat;
2031 ev_timer_start (EV_A_ w); 2831 ev_timer_start (EV_A_ w);
2032 } 2832 }
2833
2834 EV_FREQUENT_CHECK;
2835}
2836
2837ev_tstamp
2838ev_timer_remaining (EV_P_ ev_timer *w)
2839{
2840 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2033} 2841}
2034 2842
2035#if EV_PERIODIC_ENABLE 2843#if EV_PERIODIC_ENABLE
2036void noinline 2844void noinline
2037ev_periodic_start (EV_P_ ev_periodic *w) 2845ev_periodic_start (EV_P_ ev_periodic *w)
… …
2041 2849
2042 if (w->reschedule_cb) 2850 if (w->reschedule_cb)
2043 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2851 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2044 else if (w->interval) 2852 else if (w->interval)
2045 { 2853 {
2046 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2854 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2047 /* this formula differs from the one in periodic_reify because we do not always round up */ 2855 periodic_recalc (EV_A_ w);
2048 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2049 } 2856 }
2050 else 2857 else
2051 ev_at (w) = w->offset; 2858 ev_at (w) = w->offset;
2052 2859
2860 EV_FREQUENT_CHECK;
2861
2862 ++periodiccnt;
2053 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); 2863 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2054 array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2); 2864 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2055 periodics [ev_active (w)] = (WT)w; 2865 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2866 ANHE_at_cache (periodics [ev_active (w)]);
2056 upheap (periodics, ev_active (w)); 2867 upheap (periodics, ev_active (w));
2057 2868
2869 EV_FREQUENT_CHECK;
2870
2058 /*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/ 2871 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2059} 2872}
2060 2873
2061void noinline 2874void noinline
2062ev_periodic_stop (EV_P_ ev_periodic *w) 2875ev_periodic_stop (EV_P_ ev_periodic *w)
2063{ 2876{
2064 clear_pending (EV_A_ (W)w); 2877 clear_pending (EV_A_ (W)w);
2065 if (expect_false (!ev_is_active (w))) 2878 if (expect_false (!ev_is_active (w)))
2066 return; 2879 return;
2067 2880
2881 EV_FREQUENT_CHECK;
2882
2068 { 2883 {
2069 int active = ev_active (w); 2884 int active = ev_active (w);
2070 2885
2071 assert (("internal periodic heap corruption", periodics [active] == (WT)w)); 2886 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2072 2887
2888 --periodiccnt;
2889
2073 if (expect_true (active < periodiccnt + HEAP0 - 1)) 2890 if (expect_true (active < periodiccnt + HEAP0))
2074 { 2891 {
2075 periodics [active] = periodics [periodiccnt + HEAP0 - 1]; 2892 periodics [active] = periodics [periodiccnt + HEAP0];
2076 adjustheap (periodics, periodiccnt, active); 2893 adjustheap (periodics, periodiccnt, active);
2077 } 2894 }
2078
2079 --periodiccnt;
2080 } 2895 }
2081 2896
2082 ev_stop (EV_A_ (W)w); 2897 ev_stop (EV_A_ (W)w);
2898
2899 EV_FREQUENT_CHECK;
2083} 2900}
2084 2901
2085void noinline 2902void noinline
2086ev_periodic_again (EV_P_ ev_periodic *w) 2903ev_periodic_again (EV_P_ ev_periodic *w)
2087{ 2904{
… …
2093 2910
2094#ifndef SA_RESTART 2911#ifndef SA_RESTART
2095# define SA_RESTART 0 2912# define SA_RESTART 0
2096#endif 2913#endif
2097 2914
2915#if EV_SIGNAL_ENABLE
2916
2098void noinline 2917void noinline
2099ev_signal_start (EV_P_ ev_signal *w) 2918ev_signal_start (EV_P_ ev_signal *w)
2100{ 2919{
2101#if EV_MULTIPLICITY
2102 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2103#endif
2104 if (expect_false (ev_is_active (w))) 2920 if (expect_false (ev_is_active (w)))
2105 return; 2921 return;
2106 2922
2107 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2923 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2108 2924
2109 evpipe_init (EV_A); 2925#if EV_MULTIPLICITY
2926 assert (("libev: a signal must not be attached to two different loops",
2927 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2110 2928
2929 signals [w->signum - 1].loop = EV_A;
2930#endif
2931
2932 EV_FREQUENT_CHECK;
2933
2934#if EV_USE_SIGNALFD
2935 if (sigfd == -2)
2111 { 2936 {
2112#ifndef _WIN32 2937 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2113 sigset_t full, prev; 2938 if (sigfd < 0 && errno == EINVAL)
2114 sigfillset (&full); 2939 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2115 sigprocmask (SIG_SETMASK, &full, &prev);
2116#endif
2117 2940
2118 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2941 if (sigfd >= 0)
2942 {
2943 fd_intern (sigfd); /* doing it twice will not hurt */
2119 2944
2120#ifndef _WIN32 2945 sigemptyset (&sigfd_set);
2121 sigprocmask (SIG_SETMASK, &prev, 0); 2946
2122#endif 2947 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2948 ev_set_priority (&sigfd_w, EV_MAXPRI);
2949 ev_io_start (EV_A_ &sigfd_w);
2950 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2951 }
2123 } 2952 }
2953
2954 if (sigfd >= 0)
2955 {
2956 /* TODO: check .head */
2957 sigaddset (&sigfd_set, w->signum);
2958 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2959
2960 signalfd (sigfd, &sigfd_set, 0);
2961 }
2962#endif
2124 2963
2125 ev_start (EV_A_ (W)w, 1); 2964 ev_start (EV_A_ (W)w, 1);
2126 wlist_add (&signals [w->signum - 1].head, (WL)w); 2965 wlist_add (&signals [w->signum - 1].head, (WL)w);
2127 2966
2128 if (!((WL)w)->next) 2967 if (!((WL)w)->next)
2968# if EV_USE_SIGNALFD
2969 if (sigfd < 0) /*TODO*/
2970# endif
2129 { 2971 {
2130#if _WIN32 2972# ifdef _WIN32
2973 evpipe_init (EV_A);
2974
2131 signal (w->signum, ev_sighandler); 2975 signal (w->signum, ev_sighandler);
2132#else 2976# else
2133 struct sigaction sa; 2977 struct sigaction sa;
2978
2979 evpipe_init (EV_A);
2980
2134 sa.sa_handler = ev_sighandler; 2981 sa.sa_handler = ev_sighandler;
2135 sigfillset (&sa.sa_mask); 2982 sigfillset (&sa.sa_mask);
2136 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2983 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2137 sigaction (w->signum, &sa, 0); 2984 sigaction (w->signum, &sa, 0);
2985
2986 if (origflags & EVFLAG_NOSIGMASK)
2987 {
2988 sigemptyset (&sa.sa_mask);
2989 sigaddset (&sa.sa_mask, w->signum);
2990 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2991 }
2138#endif 2992#endif
2139 } 2993 }
2994
2995 EV_FREQUENT_CHECK;
2140} 2996}
2141 2997
2142void noinline 2998void noinline
2143ev_signal_stop (EV_P_ ev_signal *w) 2999ev_signal_stop (EV_P_ ev_signal *w)
2144{ 3000{
2145 clear_pending (EV_A_ (W)w); 3001 clear_pending (EV_A_ (W)w);
2146 if (expect_false (!ev_is_active (w))) 3002 if (expect_false (!ev_is_active (w)))
2147 return; 3003 return;
2148 3004
3005 EV_FREQUENT_CHECK;
3006
2149 wlist_del (&signals [w->signum - 1].head, (WL)w); 3007 wlist_del (&signals [w->signum - 1].head, (WL)w);
2150 ev_stop (EV_A_ (W)w); 3008 ev_stop (EV_A_ (W)w);
2151 3009
2152 if (!signals [w->signum - 1].head) 3010 if (!signals [w->signum - 1].head)
3011 {
3012#if EV_MULTIPLICITY
3013 signals [w->signum - 1].loop = 0; /* unattach from signal */
3014#endif
3015#if EV_USE_SIGNALFD
3016 if (sigfd >= 0)
3017 {
3018 sigset_t ss;
3019
3020 sigemptyset (&ss);
3021 sigaddset (&ss, w->signum);
3022 sigdelset (&sigfd_set, w->signum);
3023
3024 signalfd (sigfd, &sigfd_set, 0);
3025 sigprocmask (SIG_UNBLOCK, &ss, 0);
3026 }
3027 else
3028#endif
2153 signal (w->signum, SIG_DFL); 3029 signal (w->signum, SIG_DFL);
3030 }
3031
3032 EV_FREQUENT_CHECK;
2154} 3033}
3034
3035#endif
3036
3037#if EV_CHILD_ENABLE
2155 3038
2156void 3039void
2157ev_child_start (EV_P_ ev_child *w) 3040ev_child_start (EV_P_ ev_child *w)
2158{ 3041{
2159#if EV_MULTIPLICITY 3042#if EV_MULTIPLICITY
2160 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3043 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2161#endif 3044#endif
2162 if (expect_false (ev_is_active (w))) 3045 if (expect_false (ev_is_active (w)))
2163 return; 3046 return;
2164 3047
3048 EV_FREQUENT_CHECK;
3049
2165 ev_start (EV_A_ (W)w, 1); 3050 ev_start (EV_A_ (W)w, 1);
2166 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3051 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
3052
3053 EV_FREQUENT_CHECK;
2167} 3054}
2168 3055
2169void 3056void
2170ev_child_stop (EV_P_ ev_child *w) 3057ev_child_stop (EV_P_ ev_child *w)
2171{ 3058{
2172 clear_pending (EV_A_ (W)w); 3059 clear_pending (EV_A_ (W)w);
2173 if (expect_false (!ev_is_active (w))) 3060 if (expect_false (!ev_is_active (w)))
2174 return; 3061 return;
2175 3062
3063 EV_FREQUENT_CHECK;
3064
2176 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3065 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2177 ev_stop (EV_A_ (W)w); 3066 ev_stop (EV_A_ (W)w);
3067
3068 EV_FREQUENT_CHECK;
2178} 3069}
3070
3071#endif
2179 3072
2180#if EV_STAT_ENABLE 3073#if EV_STAT_ENABLE
2181 3074
2182# ifdef _WIN32 3075# ifdef _WIN32
2183# undef lstat 3076# undef lstat
2184# define lstat(a,b) _stati64 (a,b) 3077# define lstat(a,b) _stati64 (a,b)
2185# endif 3078# endif
2186 3079
2187#define DEF_STAT_INTERVAL 5.0074891 3080#define DEF_STAT_INTERVAL 5.0074891
3081#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2188#define MIN_STAT_INTERVAL 0.1074891 3082#define MIN_STAT_INTERVAL 0.1074891
2189 3083
2190static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3084static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2191 3085
2192#if EV_USE_INOTIFY 3086#if EV_USE_INOTIFY
2193# define EV_INOTIFY_BUFSIZE 8192 3087
3088/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3089# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2194 3090
2195static void noinline 3091static void noinline
2196infy_add (EV_P_ ev_stat *w) 3092infy_add (EV_P_ ev_stat *w)
2197{ 3093{
2198 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); 3094 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);
2199 3095
2200 if (w->wd < 0) 3096 if (w->wd >= 0)
3097 {
3098 struct statfs sfs;
3099
3100 /* now local changes will be tracked by inotify, but remote changes won't */
3101 /* unless the filesystem is known to be local, we therefore still poll */
3102 /* also do poll on <2.6.25, but with normal frequency */
3103
3104 if (!fs_2625)
3105 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3106 else if (!statfs (w->path, &sfs)
3107 && (sfs.f_type == 0x1373 /* devfs */
3108 || sfs.f_type == 0xEF53 /* ext2/3 */
3109 || sfs.f_type == 0x3153464a /* jfs */
3110 || sfs.f_type == 0x52654973 /* reiser3 */
3111 || sfs.f_type == 0x01021994 /* tempfs */
3112 || sfs.f_type == 0x58465342 /* xfs */))
3113 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3114 else
3115 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2201 { 3116 }
2202 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3117 else
3118 {
3119 /* can't use inotify, continue to stat */
3120 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2203 3121
2204 /* monitor some parent directory for speedup hints */ 3122 /* if path is not there, monitor some parent directory for speedup hints */
2205 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3123 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2206 /* but an efficiency issue only */ 3124 /* but an efficiency issue only */
2207 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3125 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2208 { 3126 {
2209 char path [4096]; 3127 char path [4096];
2210 strcpy (path, w->path); 3128 strcpy (path, w->path);
… …
2214 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3132 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2215 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3133 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2216 3134
2217 char *pend = strrchr (path, '/'); 3135 char *pend = strrchr (path, '/');
2218 3136
2219 if (!pend) 3137 if (!pend || pend == path)
2220 break; /* whoops, no '/', complain to your admin */ 3138 break;
2221 3139
2222 *pend = 0; 3140 *pend = 0;
2223 w->wd = inotify_add_watch (fs_fd, path, mask); 3141 w->wd = inotify_add_watch (fs_fd, path, mask);
2224 } 3142 }
2225 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3143 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2226 } 3144 }
2227 } 3145 }
2228 else
2229 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2230 3146
2231 if (w->wd >= 0) 3147 if (w->wd >= 0)
2232 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3148 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3149
3150 /* now re-arm timer, if required */
3151 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3152 ev_timer_again (EV_A_ &w->timer);
3153 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2233} 3154}
2234 3155
2235static void noinline 3156static void noinline
2236infy_del (EV_P_ ev_stat *w) 3157infy_del (EV_P_ ev_stat *w)
2237{ 3158{
… …
2240 3161
2241 if (wd < 0) 3162 if (wd < 0)
2242 return; 3163 return;
2243 3164
2244 w->wd = -2; 3165 w->wd = -2;
2245 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3166 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2246 wlist_del (&fs_hash [slot].head, (WL)w); 3167 wlist_del (&fs_hash [slot].head, (WL)w);
2247 3168
2248 /* remove this watcher, if others are watching it, they will rearm */ 3169 /* remove this watcher, if others are watching it, they will rearm */
2249 inotify_rm_watch (fs_fd, wd); 3170 inotify_rm_watch (fs_fd, wd);
2250} 3171}
2251 3172
2252static void noinline 3173static void noinline
2253infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3174infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2254{ 3175{
2255 if (slot < 0) 3176 if (slot < 0)
2256 /* overflow, need to check for all hahs slots */ 3177 /* overflow, need to check for all hash slots */
2257 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3178 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2258 infy_wd (EV_A_ slot, wd, ev); 3179 infy_wd (EV_A_ slot, wd, ev);
2259 else 3180 else
2260 { 3181 {
2261 WL w_; 3182 WL w_;
2262 3183
2263 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3184 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2264 { 3185 {
2265 ev_stat *w = (ev_stat *)w_; 3186 ev_stat *w = (ev_stat *)w_;
2266 w_ = w_->next; /* lets us remove this watcher and all before it */ 3187 w_ = w_->next; /* lets us remove this watcher and all before it */
2267 3188
2268 if (w->wd == wd || wd == -1) 3189 if (w->wd == wd || wd == -1)
2269 { 3190 {
2270 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3191 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2271 { 3192 {
3193 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2272 w->wd = -1; 3194 w->wd = -1;
2273 infy_add (EV_A_ w); /* re-add, no matter what */ 3195 infy_add (EV_A_ w); /* re-add, no matter what */
2274 } 3196 }
2275 3197
2276 stat_timer_cb (EV_A_ &w->timer, 0); 3198 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2281 3203
2282static void 3204static void
2283infy_cb (EV_P_ ev_io *w, int revents) 3205infy_cb (EV_P_ ev_io *w, int revents)
2284{ 3206{
2285 char buf [EV_INOTIFY_BUFSIZE]; 3207 char buf [EV_INOTIFY_BUFSIZE];
2286 struct inotify_event *ev = (struct inotify_event *)buf;
2287 int ofs; 3208 int ofs;
2288 int len = read (fs_fd, buf, sizeof (buf)); 3209 int len = read (fs_fd, buf, sizeof (buf));
2289 3210
2290 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3211 for (ofs = 0; ofs < len; )
3212 {
3213 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2291 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3214 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3215 ofs += sizeof (struct inotify_event) + ev->len;
3216 }
2292} 3217}
2293 3218
2294void inline_size 3219inline_size void
3220ev_check_2625 (EV_P)
3221{
3222 /* kernels < 2.6.25 are borked
3223 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3224 */
3225 if (ev_linux_version () < 0x020619)
3226 return;
3227
3228 fs_2625 = 1;
3229}
3230
3231inline_size int
3232infy_newfd (void)
3233{
3234#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3235 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3236 if (fd >= 0)
3237 return fd;
3238#endif
3239 return inotify_init ();
3240}
3241
3242inline_size void
2295infy_init (EV_P) 3243infy_init (EV_P)
2296{ 3244{
2297 if (fs_fd != -2) 3245 if (fs_fd != -2)
2298 return; 3246 return;
2299 3247
3248 fs_fd = -1;
3249
3250 ev_check_2625 (EV_A);
3251
2300 fs_fd = inotify_init (); 3252 fs_fd = infy_newfd ();
2301 3253
2302 if (fs_fd >= 0) 3254 if (fs_fd >= 0)
2303 { 3255 {
3256 fd_intern (fs_fd);
2304 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3257 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2305 ev_set_priority (&fs_w, EV_MAXPRI); 3258 ev_set_priority (&fs_w, EV_MAXPRI);
2306 ev_io_start (EV_A_ &fs_w); 3259 ev_io_start (EV_A_ &fs_w);
3260 ev_unref (EV_A);
2307 } 3261 }
2308} 3262}
2309 3263
2310void inline_size 3264inline_size void
2311infy_fork (EV_P) 3265infy_fork (EV_P)
2312{ 3266{
2313 int slot; 3267 int slot;
2314 3268
2315 if (fs_fd < 0) 3269 if (fs_fd < 0)
2316 return; 3270 return;
2317 3271
3272 ev_ref (EV_A);
3273 ev_io_stop (EV_A_ &fs_w);
2318 close (fs_fd); 3274 close (fs_fd);
2319 fs_fd = inotify_init (); 3275 fs_fd = infy_newfd ();
2320 3276
3277 if (fs_fd >= 0)
3278 {
3279 fd_intern (fs_fd);
3280 ev_io_set (&fs_w, fs_fd, EV_READ);
3281 ev_io_start (EV_A_ &fs_w);
3282 ev_unref (EV_A);
3283 }
3284
2321 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3285 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2322 { 3286 {
2323 WL w_ = fs_hash [slot].head; 3287 WL w_ = fs_hash [slot].head;
2324 fs_hash [slot].head = 0; 3288 fs_hash [slot].head = 0;
2325 3289
2326 while (w_) 3290 while (w_)
… …
2331 w->wd = -1; 3295 w->wd = -1;
2332 3296
2333 if (fs_fd >= 0) 3297 if (fs_fd >= 0)
2334 infy_add (EV_A_ w); /* re-add, no matter what */ 3298 infy_add (EV_A_ w); /* re-add, no matter what */
2335 else 3299 else
3300 {
3301 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3302 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2336 ev_timer_start (EV_A_ &w->timer); 3303 ev_timer_again (EV_A_ &w->timer);
3304 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3305 }
2337 } 3306 }
2338
2339 } 3307 }
2340} 3308}
2341 3309
3310#endif
3311
3312#ifdef _WIN32
3313# define EV_LSTAT(p,b) _stati64 (p, b)
3314#else
3315# define EV_LSTAT(p,b) lstat (p, b)
2342#endif 3316#endif
2343 3317
2344void 3318void
2345ev_stat_stat (EV_P_ ev_stat *w) 3319ev_stat_stat (EV_P_ ev_stat *w)
2346{ 3320{
… …
2353static void noinline 3327static void noinline
2354stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3328stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2355{ 3329{
2356 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3330 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2357 3331
2358 /* we copy this here each the time so that */ 3332 ev_statdata prev = w->attr;
2359 /* prev has the old value when the callback gets invoked */
2360 w->prev = w->attr;
2361 ev_stat_stat (EV_A_ w); 3333 ev_stat_stat (EV_A_ w);
2362 3334
2363 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3335 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2364 if ( 3336 if (
2365 w->prev.st_dev != w->attr.st_dev 3337 prev.st_dev != w->attr.st_dev
2366 || w->prev.st_ino != w->attr.st_ino 3338 || prev.st_ino != w->attr.st_ino
2367 || w->prev.st_mode != w->attr.st_mode 3339 || prev.st_mode != w->attr.st_mode
2368 || w->prev.st_nlink != w->attr.st_nlink 3340 || prev.st_nlink != w->attr.st_nlink
2369 || w->prev.st_uid != w->attr.st_uid 3341 || prev.st_uid != w->attr.st_uid
2370 || w->prev.st_gid != w->attr.st_gid 3342 || prev.st_gid != w->attr.st_gid
2371 || w->prev.st_rdev != w->attr.st_rdev 3343 || prev.st_rdev != w->attr.st_rdev
2372 || w->prev.st_size != w->attr.st_size 3344 || prev.st_size != w->attr.st_size
2373 || w->prev.st_atime != w->attr.st_atime 3345 || prev.st_atime != w->attr.st_atime
2374 || w->prev.st_mtime != w->attr.st_mtime 3346 || prev.st_mtime != w->attr.st_mtime
2375 || w->prev.st_ctime != w->attr.st_ctime 3347 || prev.st_ctime != w->attr.st_ctime
2376 ) { 3348 ) {
3349 /* we only update w->prev on actual differences */
3350 /* in case we test more often than invoke the callback, */
3351 /* to ensure that prev is always different to attr */
3352 w->prev = prev;
3353
2377 #if EV_USE_INOTIFY 3354 #if EV_USE_INOTIFY
3355 if (fs_fd >= 0)
3356 {
2378 infy_del (EV_A_ w); 3357 infy_del (EV_A_ w);
2379 infy_add (EV_A_ w); 3358 infy_add (EV_A_ w);
2380 ev_stat_stat (EV_A_ w); /* avoid race... */ 3359 ev_stat_stat (EV_A_ w); /* avoid race... */
3360 }
2381 #endif 3361 #endif
2382 3362
2383 ev_feed_event (EV_A_ w, EV_STAT); 3363 ev_feed_event (EV_A_ w, EV_STAT);
2384 } 3364 }
2385} 3365}
… …
2388ev_stat_start (EV_P_ ev_stat *w) 3368ev_stat_start (EV_P_ ev_stat *w)
2389{ 3369{
2390 if (expect_false (ev_is_active (w))) 3370 if (expect_false (ev_is_active (w)))
2391 return; 3371 return;
2392 3372
2393 /* since we use memcmp, we need to clear any padding data etc. */
2394 memset (&w->prev, 0, sizeof (ev_statdata));
2395 memset (&w->attr, 0, sizeof (ev_statdata));
2396
2397 ev_stat_stat (EV_A_ w); 3373 ev_stat_stat (EV_A_ w);
2398 3374
3375 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2399 if (w->interval < MIN_STAT_INTERVAL) 3376 w->interval = MIN_STAT_INTERVAL;
2400 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2401 3377
2402 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3378 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2403 ev_set_priority (&w->timer, ev_priority (w)); 3379 ev_set_priority (&w->timer, ev_priority (w));
2404 3380
2405#if EV_USE_INOTIFY 3381#if EV_USE_INOTIFY
2406 infy_init (EV_A); 3382 infy_init (EV_A);
2407 3383
2408 if (fs_fd >= 0) 3384 if (fs_fd >= 0)
2409 infy_add (EV_A_ w); 3385 infy_add (EV_A_ w);
2410 else 3386 else
2411#endif 3387#endif
3388 {
2412 ev_timer_start (EV_A_ &w->timer); 3389 ev_timer_again (EV_A_ &w->timer);
3390 ev_unref (EV_A);
3391 }
2413 3392
2414 ev_start (EV_A_ (W)w, 1); 3393 ev_start (EV_A_ (W)w, 1);
3394
3395 EV_FREQUENT_CHECK;
2415} 3396}
2416 3397
2417void 3398void
2418ev_stat_stop (EV_P_ ev_stat *w) 3399ev_stat_stop (EV_P_ ev_stat *w)
2419{ 3400{
2420 clear_pending (EV_A_ (W)w); 3401 clear_pending (EV_A_ (W)w);
2421 if (expect_false (!ev_is_active (w))) 3402 if (expect_false (!ev_is_active (w)))
2422 return; 3403 return;
2423 3404
3405 EV_FREQUENT_CHECK;
3406
2424#if EV_USE_INOTIFY 3407#if EV_USE_INOTIFY
2425 infy_del (EV_A_ w); 3408 infy_del (EV_A_ w);
2426#endif 3409#endif
3410
3411 if (ev_is_active (&w->timer))
3412 {
3413 ev_ref (EV_A);
2427 ev_timer_stop (EV_A_ &w->timer); 3414 ev_timer_stop (EV_A_ &w->timer);
3415 }
2428 3416
2429 ev_stop (EV_A_ (W)w); 3417 ev_stop (EV_A_ (W)w);
3418
3419 EV_FREQUENT_CHECK;
2430} 3420}
2431#endif 3421#endif
2432 3422
2433#if EV_IDLE_ENABLE 3423#if EV_IDLE_ENABLE
2434void 3424void
… …
2436{ 3426{
2437 if (expect_false (ev_is_active (w))) 3427 if (expect_false (ev_is_active (w)))
2438 return; 3428 return;
2439 3429
2440 pri_adjust (EV_A_ (W)w); 3430 pri_adjust (EV_A_ (W)w);
3431
3432 EV_FREQUENT_CHECK;
2441 3433
2442 { 3434 {
2443 int active = ++idlecnt [ABSPRI (w)]; 3435 int active = ++idlecnt [ABSPRI (w)];
2444 3436
2445 ++idleall; 3437 ++idleall;
2446 ev_start (EV_A_ (W)w, active); 3438 ev_start (EV_A_ (W)w, active);
2447 3439
2448 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3440 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2449 idles [ABSPRI (w)][active - 1] = w; 3441 idles [ABSPRI (w)][active - 1] = w;
2450 } 3442 }
3443
3444 EV_FREQUENT_CHECK;
2451} 3445}
2452 3446
2453void 3447void
2454ev_idle_stop (EV_P_ ev_idle *w) 3448ev_idle_stop (EV_P_ ev_idle *w)
2455{ 3449{
2456 clear_pending (EV_A_ (W)w); 3450 clear_pending (EV_A_ (W)w);
2457 if (expect_false (!ev_is_active (w))) 3451 if (expect_false (!ev_is_active (w)))
2458 return; 3452 return;
2459 3453
3454 EV_FREQUENT_CHECK;
3455
2460 { 3456 {
2461 int active = ev_active (w); 3457 int active = ev_active (w);
2462 3458
2463 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3459 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2464 ev_active (idles [ABSPRI (w)][active - 1]) = active; 3460 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2465 3461
2466 ev_stop (EV_A_ (W)w); 3462 ev_stop (EV_A_ (W)w);
2467 --idleall; 3463 --idleall;
2468 } 3464 }
2469}
2470#endif
2471 3465
3466 EV_FREQUENT_CHECK;
3467}
3468#endif
3469
3470#if EV_PREPARE_ENABLE
2472void 3471void
2473ev_prepare_start (EV_P_ ev_prepare *w) 3472ev_prepare_start (EV_P_ ev_prepare *w)
2474{ 3473{
2475 if (expect_false (ev_is_active (w))) 3474 if (expect_false (ev_is_active (w)))
2476 return; 3475 return;
3476
3477 EV_FREQUENT_CHECK;
2477 3478
2478 ev_start (EV_A_ (W)w, ++preparecnt); 3479 ev_start (EV_A_ (W)w, ++preparecnt);
2479 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3480 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2480 prepares [preparecnt - 1] = w; 3481 prepares [preparecnt - 1] = w;
3482
3483 EV_FREQUENT_CHECK;
2481} 3484}
2482 3485
2483void 3486void
2484ev_prepare_stop (EV_P_ ev_prepare *w) 3487ev_prepare_stop (EV_P_ ev_prepare *w)
2485{ 3488{
2486 clear_pending (EV_A_ (W)w); 3489 clear_pending (EV_A_ (W)w);
2487 if (expect_false (!ev_is_active (w))) 3490 if (expect_false (!ev_is_active (w)))
2488 return; 3491 return;
2489 3492
3493 EV_FREQUENT_CHECK;
3494
2490 { 3495 {
2491 int active = ev_active (w); 3496 int active = ev_active (w);
2492 3497
2493 prepares [active - 1] = prepares [--preparecnt]; 3498 prepares [active - 1] = prepares [--preparecnt];
2494 ev_active (prepares [active - 1]) = active; 3499 ev_active (prepares [active - 1]) = active;
2495 } 3500 }
2496 3501
2497 ev_stop (EV_A_ (W)w); 3502 ev_stop (EV_A_ (W)w);
2498}
2499 3503
3504 EV_FREQUENT_CHECK;
3505}
3506#endif
3507
3508#if EV_CHECK_ENABLE
2500void 3509void
2501ev_check_start (EV_P_ ev_check *w) 3510ev_check_start (EV_P_ ev_check *w)
2502{ 3511{
2503 if (expect_false (ev_is_active (w))) 3512 if (expect_false (ev_is_active (w)))
2504 return; 3513 return;
3514
3515 EV_FREQUENT_CHECK;
2505 3516
2506 ev_start (EV_A_ (W)w, ++checkcnt); 3517 ev_start (EV_A_ (W)w, ++checkcnt);
2507 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3518 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2508 checks [checkcnt - 1] = w; 3519 checks [checkcnt - 1] = w;
3520
3521 EV_FREQUENT_CHECK;
2509} 3522}
2510 3523
2511void 3524void
2512ev_check_stop (EV_P_ ev_check *w) 3525ev_check_stop (EV_P_ ev_check *w)
2513{ 3526{
2514 clear_pending (EV_A_ (W)w); 3527 clear_pending (EV_A_ (W)w);
2515 if (expect_false (!ev_is_active (w))) 3528 if (expect_false (!ev_is_active (w)))
2516 return; 3529 return;
2517 3530
3531 EV_FREQUENT_CHECK;
3532
2518 { 3533 {
2519 int active = ev_active (w); 3534 int active = ev_active (w);
2520 3535
2521 checks [active - 1] = checks [--checkcnt]; 3536 checks [active - 1] = checks [--checkcnt];
2522 ev_active (checks [active - 1]) = active; 3537 ev_active (checks [active - 1]) = active;
2523 } 3538 }
2524 3539
2525 ev_stop (EV_A_ (W)w); 3540 ev_stop (EV_A_ (W)w);
3541
3542 EV_FREQUENT_CHECK;
2526} 3543}
3544#endif
2527 3545
2528#if EV_EMBED_ENABLE 3546#if EV_EMBED_ENABLE
2529void noinline 3547void noinline
2530ev_embed_sweep (EV_P_ ev_embed *w) 3548ev_embed_sweep (EV_P_ ev_embed *w)
2531{ 3549{
2532 ev_loop (w->other, EVLOOP_NONBLOCK); 3550 ev_run (w->other, EVRUN_NOWAIT);
2533} 3551}
2534 3552
2535static void 3553static void
2536embed_io_cb (EV_P_ ev_io *io, int revents) 3554embed_io_cb (EV_P_ ev_io *io, int revents)
2537{ 3555{
2538 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3556 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2539 3557
2540 if (ev_cb (w)) 3558 if (ev_cb (w))
2541 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3559 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2542 else 3560 else
2543 ev_loop (w->other, EVLOOP_NONBLOCK); 3561 ev_run (w->other, EVRUN_NOWAIT);
2544} 3562}
2545 3563
2546static void 3564static void
2547embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3565embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2548{ 3566{
2549 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3567 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2550 3568
2551 { 3569 {
2552 struct ev_loop *loop = w->other; 3570 EV_P = w->other;
2553 3571
2554 while (fdchangecnt) 3572 while (fdchangecnt)
2555 { 3573 {
2556 fd_reify (EV_A); 3574 fd_reify (EV_A);
2557 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3575 ev_run (EV_A_ EVRUN_NOWAIT);
2558 } 3576 }
2559 } 3577 }
3578}
3579
3580static void
3581embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3582{
3583 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3584
3585 ev_embed_stop (EV_A_ w);
3586
3587 {
3588 EV_P = w->other;
3589
3590 ev_loop_fork (EV_A);
3591 ev_run (EV_A_ EVRUN_NOWAIT);
3592 }
3593
3594 ev_embed_start (EV_A_ w);
2560} 3595}
2561 3596
2562#if 0 3597#if 0
2563static void 3598static void
2564embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3599embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2572{ 3607{
2573 if (expect_false (ev_is_active (w))) 3608 if (expect_false (ev_is_active (w)))
2574 return; 3609 return;
2575 3610
2576 { 3611 {
2577 struct ev_loop *loop = w->other; 3612 EV_P = w->other;
2578 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3613 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2579 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3614 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2580 } 3615 }
3616
3617 EV_FREQUENT_CHECK;
2581 3618
2582 ev_set_priority (&w->io, ev_priority (w)); 3619 ev_set_priority (&w->io, ev_priority (w));
2583 ev_io_start (EV_A_ &w->io); 3620 ev_io_start (EV_A_ &w->io);
2584 3621
2585 ev_prepare_init (&w->prepare, embed_prepare_cb); 3622 ev_prepare_init (&w->prepare, embed_prepare_cb);
2586 ev_set_priority (&w->prepare, EV_MINPRI); 3623 ev_set_priority (&w->prepare, EV_MINPRI);
2587 ev_prepare_start (EV_A_ &w->prepare); 3624 ev_prepare_start (EV_A_ &w->prepare);
2588 3625
3626 ev_fork_init (&w->fork, embed_fork_cb);
3627 ev_fork_start (EV_A_ &w->fork);
3628
2589 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3629 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2590 3630
2591 ev_start (EV_A_ (W)w, 1); 3631 ev_start (EV_A_ (W)w, 1);
3632
3633 EV_FREQUENT_CHECK;
2592} 3634}
2593 3635
2594void 3636void
2595ev_embed_stop (EV_P_ ev_embed *w) 3637ev_embed_stop (EV_P_ ev_embed *w)
2596{ 3638{
2597 clear_pending (EV_A_ (W)w); 3639 clear_pending (EV_A_ (W)w);
2598 if (expect_false (!ev_is_active (w))) 3640 if (expect_false (!ev_is_active (w)))
2599 return; 3641 return;
2600 3642
3643 EV_FREQUENT_CHECK;
3644
2601 ev_io_stop (EV_A_ &w->io); 3645 ev_io_stop (EV_A_ &w->io);
2602 ev_prepare_stop (EV_A_ &w->prepare); 3646 ev_prepare_stop (EV_A_ &w->prepare);
3647 ev_fork_stop (EV_A_ &w->fork);
2603 3648
2604 ev_stop (EV_A_ (W)w); 3649 ev_stop (EV_A_ (W)w);
3650
3651 EV_FREQUENT_CHECK;
2605} 3652}
2606#endif 3653#endif
2607 3654
2608#if EV_FORK_ENABLE 3655#if EV_FORK_ENABLE
2609void 3656void
2610ev_fork_start (EV_P_ ev_fork *w) 3657ev_fork_start (EV_P_ ev_fork *w)
2611{ 3658{
2612 if (expect_false (ev_is_active (w))) 3659 if (expect_false (ev_is_active (w)))
2613 return; 3660 return;
3661
3662 EV_FREQUENT_CHECK;
2614 3663
2615 ev_start (EV_A_ (W)w, ++forkcnt); 3664 ev_start (EV_A_ (W)w, ++forkcnt);
2616 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3665 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2617 forks [forkcnt - 1] = w; 3666 forks [forkcnt - 1] = w;
3667
3668 EV_FREQUENT_CHECK;
2618} 3669}
2619 3670
2620void 3671void
2621ev_fork_stop (EV_P_ ev_fork *w) 3672ev_fork_stop (EV_P_ ev_fork *w)
2622{ 3673{
2623 clear_pending (EV_A_ (W)w); 3674 clear_pending (EV_A_ (W)w);
2624 if (expect_false (!ev_is_active (w))) 3675 if (expect_false (!ev_is_active (w)))
2625 return; 3676 return;
2626 3677
3678 EV_FREQUENT_CHECK;
3679
2627 { 3680 {
2628 int active = ev_active (w); 3681 int active = ev_active (w);
2629 3682
2630 forks [active - 1] = forks [--forkcnt]; 3683 forks [active - 1] = forks [--forkcnt];
2631 ev_active (forks [active - 1]) = active; 3684 ev_active (forks [active - 1]) = active;
2632 } 3685 }
2633 3686
2634 ev_stop (EV_A_ (W)w); 3687 ev_stop (EV_A_ (W)w);
2635}
2636#endif
2637 3688
3689 EV_FREQUENT_CHECK;
3690}
3691#endif
3692
2638#if EV_ASYNC_ENABLE 3693#if EV_CLEANUP_ENABLE
2639void 3694void
2640ev_async_start (EV_P_ ev_async *w) 3695ev_cleanup_start (EV_P_ ev_cleanup *w)
2641{ 3696{
2642 if (expect_false (ev_is_active (w))) 3697 if (expect_false (ev_is_active (w)))
2643 return; 3698 return;
2644 3699
3700 EV_FREQUENT_CHECK;
3701
3702 ev_start (EV_A_ (W)w, ++cleanupcnt);
3703 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3704 cleanups [cleanupcnt - 1] = w;
3705
3706 /* cleanup watchers should never keep a refcount on the loop */
3707 ev_unref (EV_A);
3708 EV_FREQUENT_CHECK;
3709}
3710
3711void
3712ev_cleanup_stop (EV_P_ ev_cleanup *w)
3713{
3714 clear_pending (EV_A_ (W)w);
3715 if (expect_false (!ev_is_active (w)))
3716 return;
3717
3718 EV_FREQUENT_CHECK;
3719 ev_ref (EV_A);
3720
3721 {
3722 int active = ev_active (w);
3723
3724 cleanups [active - 1] = cleanups [--cleanupcnt];
3725 ev_active (cleanups [active - 1]) = active;
3726 }
3727
3728 ev_stop (EV_A_ (W)w);
3729
3730 EV_FREQUENT_CHECK;
3731}
3732#endif
3733
3734#if EV_ASYNC_ENABLE
3735void
3736ev_async_start (EV_P_ ev_async *w)
3737{
3738 if (expect_false (ev_is_active (w)))
3739 return;
3740
3741 w->sent = 0;
3742
2645 evpipe_init (EV_A); 3743 evpipe_init (EV_A);
3744
3745 EV_FREQUENT_CHECK;
2646 3746
2647 ev_start (EV_A_ (W)w, ++asynccnt); 3747 ev_start (EV_A_ (W)w, ++asynccnt);
2648 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3748 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2649 asyncs [asynccnt - 1] = w; 3749 asyncs [asynccnt - 1] = w;
3750
3751 EV_FREQUENT_CHECK;
2650} 3752}
2651 3753
2652void 3754void
2653ev_async_stop (EV_P_ ev_async *w) 3755ev_async_stop (EV_P_ ev_async *w)
2654{ 3756{
2655 clear_pending (EV_A_ (W)w); 3757 clear_pending (EV_A_ (W)w);
2656 if (expect_false (!ev_is_active (w))) 3758 if (expect_false (!ev_is_active (w)))
2657 return; 3759 return;
2658 3760
3761 EV_FREQUENT_CHECK;
3762
2659 { 3763 {
2660 int active = ev_active (w); 3764 int active = ev_active (w);
2661 3765
2662 asyncs [active - 1] = asyncs [--asynccnt]; 3766 asyncs [active - 1] = asyncs [--asynccnt];
2663 ev_active (asyncs [active - 1]) = active; 3767 ev_active (asyncs [active - 1]) = active;
2664 } 3768 }
2665 3769
2666 ev_stop (EV_A_ (W)w); 3770 ev_stop (EV_A_ (W)w);
3771
3772 EV_FREQUENT_CHECK;
2667} 3773}
2668 3774
2669void 3775void
2670ev_async_send (EV_P_ ev_async *w) 3776ev_async_send (EV_P_ ev_async *w)
2671{ 3777{
2672 w->sent = 1; 3778 w->sent = 1;
2673 evpipe_write (EV_A_ &gotasync); 3779 evpipe_write (EV_A_ &async_pending);
2674} 3780}
2675#endif 3781#endif
2676 3782
2677/*****************************************************************************/ 3783/*****************************************************************************/
2678 3784
… …
2688once_cb (EV_P_ struct ev_once *once, int revents) 3794once_cb (EV_P_ struct ev_once *once, int revents)
2689{ 3795{
2690 void (*cb)(int revents, void *arg) = once->cb; 3796 void (*cb)(int revents, void *arg) = once->cb;
2691 void *arg = once->arg; 3797 void *arg = once->arg;
2692 3798
2693 ev_io_stop (EV_A_ &once->io); 3799 ev_io_stop (EV_A_ &once->io);
2694 ev_timer_stop (EV_A_ &once->to); 3800 ev_timer_stop (EV_A_ &once->to);
2695 ev_free (once); 3801 ev_free (once);
2696 3802
2697 cb (revents, arg); 3803 cb (revents, arg);
2698} 3804}
2699 3805
2700static void 3806static void
2701once_cb_io (EV_P_ ev_io *w, int revents) 3807once_cb_io (EV_P_ ev_io *w, int revents)
2702{ 3808{
2703 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3809 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3810
3811 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2704} 3812}
2705 3813
2706static void 3814static void
2707once_cb_to (EV_P_ ev_timer *w, int revents) 3815once_cb_to (EV_P_ ev_timer *w, int revents)
2708{ 3816{
2709 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3817 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3818
3819 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2710} 3820}
2711 3821
2712void 3822void
2713ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3823ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2714{ 3824{
2715 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3825 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2716 3826
2717 if (expect_false (!once)) 3827 if (expect_false (!once))
2718 { 3828 {
2719 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3829 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2720 return; 3830 return;
2721 } 3831 }
2722 3832
2723 once->cb = cb; 3833 once->cb = cb;
2724 once->arg = arg; 3834 once->arg = arg;
… …
2736 ev_timer_set (&once->to, timeout, 0.); 3846 ev_timer_set (&once->to, timeout, 0.);
2737 ev_timer_start (EV_A_ &once->to); 3847 ev_timer_start (EV_A_ &once->to);
2738 } 3848 }
2739} 3849}
2740 3850
3851/*****************************************************************************/
3852
3853#if EV_WALK_ENABLE
3854void
3855ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3856{
3857 int i, j;
3858 ev_watcher_list *wl, *wn;
3859
3860 if (types & (EV_IO | EV_EMBED))
3861 for (i = 0; i < anfdmax; ++i)
3862 for (wl = anfds [i].head; wl; )
3863 {
3864 wn = wl->next;
3865
3866#if EV_EMBED_ENABLE
3867 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3868 {
3869 if (types & EV_EMBED)
3870 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3871 }
3872 else
3873#endif
3874#if EV_USE_INOTIFY
3875 if (ev_cb ((ev_io *)wl) == infy_cb)
3876 ;
3877 else
3878#endif
3879 if ((ev_io *)wl != &pipe_w)
3880 if (types & EV_IO)
3881 cb (EV_A_ EV_IO, wl);
3882
3883 wl = wn;
3884 }
3885
3886 if (types & (EV_TIMER | EV_STAT))
3887 for (i = timercnt + HEAP0; i-- > HEAP0; )
3888#if EV_STAT_ENABLE
3889 /*TODO: timer is not always active*/
3890 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3891 {
3892 if (types & EV_STAT)
3893 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3894 }
3895 else
3896#endif
3897 if (types & EV_TIMER)
3898 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3899
3900#if EV_PERIODIC_ENABLE
3901 if (types & EV_PERIODIC)
3902 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3903 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3904#endif
3905
3906#if EV_IDLE_ENABLE
3907 if (types & EV_IDLE)
3908 for (j = NUMPRI; i--; )
3909 for (i = idlecnt [j]; i--; )
3910 cb (EV_A_ EV_IDLE, idles [j][i]);
3911#endif
3912
3913#if EV_FORK_ENABLE
3914 if (types & EV_FORK)
3915 for (i = forkcnt; i--; )
3916 if (ev_cb (forks [i]) != embed_fork_cb)
3917 cb (EV_A_ EV_FORK, forks [i]);
3918#endif
3919
3920#if EV_ASYNC_ENABLE
3921 if (types & EV_ASYNC)
3922 for (i = asynccnt; i--; )
3923 cb (EV_A_ EV_ASYNC, asyncs [i]);
3924#endif
3925
3926#if EV_PREPARE_ENABLE
3927 if (types & EV_PREPARE)
3928 for (i = preparecnt; i--; )
3929# if EV_EMBED_ENABLE
3930 if (ev_cb (prepares [i]) != embed_prepare_cb)
3931# endif
3932 cb (EV_A_ EV_PREPARE, prepares [i]);
3933#endif
3934
3935#if EV_CHECK_ENABLE
3936 if (types & EV_CHECK)
3937 for (i = checkcnt; i--; )
3938 cb (EV_A_ EV_CHECK, checks [i]);
3939#endif
3940
3941#if EV_SIGNAL_ENABLE
3942 if (types & EV_SIGNAL)
3943 for (i = 0; i < EV_NSIG - 1; ++i)
3944 for (wl = signals [i].head; wl; )
3945 {
3946 wn = wl->next;
3947 cb (EV_A_ EV_SIGNAL, wl);
3948 wl = wn;
3949 }
3950#endif
3951
3952#if EV_CHILD_ENABLE
3953 if (types & EV_CHILD)
3954 for (i = (EV_PID_HASHSIZE); i--; )
3955 for (wl = childs [i]; wl; )
3956 {
3957 wn = wl->next;
3958 cb (EV_A_ EV_CHILD, wl);
3959 wl = wn;
3960 }
3961#endif
3962/* EV_STAT 0x00001000 /* stat data changed */
3963/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3964}
3965#endif
3966
2741#if EV_MULTIPLICITY 3967#if EV_MULTIPLICITY
2742 #include "ev_wrap.h" 3968 #include "ev_wrap.h"
2743#endif 3969#endif
2744 3970
2745#ifdef __cplusplus 3971EV_CPP(})
2746}
2747#endif
2748 3972

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