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Comparing libev/ev.c (file contents):
Revision 1.224 by root, Wed Apr 9 22:07:50 2008 UTC vs.
Revision 1.377 by root, Wed Jun 8 13:11:55 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;
327typedef ev_watcher_list *WL; 502typedef ev_watcher_list *WL;
328typedef ev_watcher_time *WT; 503typedef ev_watcher_time *WT;
329 504
505#define ev_active(w) ((W)(w))->active
506#define ev_at(w) ((WT)(w))->at
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
330#if EV_USE_MONOTONIC 514#if EV_USE_MONOTONIC
331/* sig_atomic_t is used to avoid per-thread variables or locking but still */
332/* giving it a reasonably high chance of working on typical architetcures */
333static 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)
334#endif 526#endif
335 527
336#ifdef _WIN32 528#ifdef _WIN32
337# include "ev_win32.c" 529# include "ev_win32.c"
338#endif 530#endif
339 531
340/*****************************************************************************/ 532/*****************************************************************************/
341 533
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
342static void (*syserr_cb)(const char *msg); 632static void (*syserr_cb)(const char *msg);
343 633
344void 634void
345ev_set_syserr_cb (void (*cb)(const char *msg)) 635ev_set_syserr_cb (void (*cb)(const char *msg))
346{ 636{
347 syserr_cb = cb; 637 syserr_cb = cb;
348} 638}
349 639
350static void noinline 640static void noinline
351syserr (const char *msg) 641ev_syserr (const char *msg)
352{ 642{
353 if (!msg) 643 if (!msg)
354 msg = "(libev) system error"; 644 msg = "(libev) system error";
355 645
356 if (syserr_cb) 646 if (syserr_cb)
357 syserr_cb (msg); 647 syserr_cb (msg);
358 else 648 else
359 { 649 {
650#if EV_AVOID_STDIO
651 ev_printerr (msg);
652 ev_printerr (": ");
653 ev_printerr (strerror (errno));
654 ev_printerr ("\n");
655#else
360 perror (msg); 656 perror (msg);
657#endif
361 abort (); 658 abort ();
362 } 659 }
363} 660}
364 661
365static void * 662static void *
366ev_realloc_emul (void *ptr, long size) 663ev_realloc_emul (void *ptr, long size)
367{ 664{
665#if __GLIBC__
666 return realloc (ptr, size);
667#else
368 /* some systems, notably openbsd and darwin, fail to properly 668 /* some systems, notably openbsd and darwin, fail to properly
369 * 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
370 * the single unix specification, so work around them here. 670 * the single unix specification, so work around them here.
371 */ 671 */
372 672
373 if (size) 673 if (size)
374 return realloc (ptr, size); 674 return realloc (ptr, size);
375 675
376 free (ptr); 676 free (ptr);
377 return 0; 677 return 0;
678#endif
378} 679}
379 680
380static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 681static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
381 682
382void 683void
… …
390{ 691{
391 ptr = alloc (ptr, size); 692 ptr = alloc (ptr, size);
392 693
393 if (!ptr && size) 694 if (!ptr && size)
394 { 695 {
696#if EV_AVOID_STDIO
697 ev_printerr ("(libev) memory allocation failed, aborting.\n");
698#else
395 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 699 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
700#endif
396 abort (); 701 abort ();
397 } 702 }
398 703
399 return ptr; 704 return ptr;
400} 705}
… …
402#define ev_malloc(size) ev_realloc (0, (size)) 707#define ev_malloc(size) ev_realloc (0, (size))
403#define ev_free(ptr) ev_realloc ((ptr), 0) 708#define ev_free(ptr) ev_realloc ((ptr), 0)
404 709
405/*****************************************************************************/ 710/*****************************************************************************/
406 711
712/* set in reify when reification needed */
713#define EV_ANFD_REIFY 1
714
715/* file descriptor info structure */
407typedef struct 716typedef struct
408{ 717{
409 WL head; 718 WL head;
410 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 */
411 unsigned char reify; 722 unsigned char unused;
723#if EV_USE_EPOLL
724 unsigned int egen; /* generation counter to counter epoll bugs */
725#endif
412#if EV_SELECT_IS_WINSOCKET 726#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
413 SOCKET handle; 727 SOCKET handle;
414#endif 728#endif
729#if EV_USE_IOCP
730 OVERLAPPED or, ow;
731#endif
415} ANFD; 732} ANFD;
416 733
734/* stores the pending event set for a given watcher */
417typedef struct 735typedef struct
418{ 736{
419 W w; 737 W w;
420 int events; 738 int events; /* the pending event set for the given watcher */
421} ANPENDING; 739} ANPENDING;
422 740
423#if EV_USE_INOTIFY 741#if EV_USE_INOTIFY
742/* hash table entry per inotify-id */
424typedef struct 743typedef struct
425{ 744{
426 WL head; 745 WL head;
427} 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)
428#endif 767#endif
429 768
430#if EV_MULTIPLICITY 769#if EV_MULTIPLICITY
431 770
432 struct ev_loop 771 struct ev_loop
… …
451 790
452 static int ev_default_loop_ptr; 791 static int ev_default_loop_ptr;
453 792
454#endif 793#endif
455 794
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
456/*****************************************************************************/ 807/*****************************************************************************/
457 808
809#ifndef EV_HAVE_EV_TIME
458ev_tstamp 810ev_tstamp
459ev_time (void) 811ev_time (void)
460{ 812{
461#if EV_USE_REALTIME 813#if EV_USE_REALTIME
814 if (expect_true (have_realtime))
815 {
462 struct timespec ts; 816 struct timespec ts;
463 clock_gettime (CLOCK_REALTIME, &ts); 817 clock_gettime (CLOCK_REALTIME, &ts);
464 return ts.tv_sec + ts.tv_nsec * 1e-9; 818 return ts.tv_sec + ts.tv_nsec * 1e-9;
465#else 819 }
820#endif
821
466 struct timeval tv; 822 struct timeval tv;
467 gettimeofday (&tv, 0); 823 gettimeofday (&tv, 0);
468 return tv.tv_sec + tv.tv_usec * 1e-6; 824 return tv.tv_sec + tv.tv_usec * 1e-6;
469#endif
470} 825}
826#endif
471 827
472ev_tstamp inline_size 828inline_size ev_tstamp
473get_clock (void) 829get_clock (void)
474{ 830{
475#if EV_USE_MONOTONIC 831#if EV_USE_MONOTONIC
476 if (expect_true (have_monotonic)) 832 if (expect_true (have_monotonic))
477 { 833 {
… …
498 if (delay > 0.) 854 if (delay > 0.)
499 { 855 {
500#if EV_USE_NANOSLEEP 856#if EV_USE_NANOSLEEP
501 struct timespec ts; 857 struct timespec ts;
502 858
503 ts.tv_sec = (time_t)delay; 859 EV_TS_SET (ts, delay);
504 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
505
506 nanosleep (&ts, 0); 860 nanosleep (&ts, 0);
507#elif defined(_WIN32) 861#elif defined(_WIN32)
508 Sleep ((unsigned long)(delay * 1e3)); 862 Sleep ((unsigned long)(delay * 1e3));
509#else 863#else
510 struct timeval tv; 864 struct timeval tv;
511 865
512 tv.tv_sec = (time_t)delay; 866 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
513 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 867 /* something not guaranteed by newer posix versions, but guaranteed */
514 868 /* by older ones */
869 EV_TV_SET (tv, delay);
515 select (0, 0, 0, 0, &tv); 870 select (0, 0, 0, 0, &tv);
516#endif 871#endif
517 } 872 }
518} 873}
519 874
520/*****************************************************************************/ 875/*****************************************************************************/
521 876
522int inline_size 877#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
878
879/* find a suitable new size for the given array, */
880/* hopefully by rounding to a nice-to-malloc size */
881inline_size int
523array_nextsize (int elem, int cur, int cnt) 882array_nextsize (int elem, int cur, int cnt)
524{ 883{
525 int ncur = cur + 1; 884 int ncur = cur + 1;
526 885
527 do 886 do
528 ncur <<= 1; 887 ncur <<= 1;
529 while (cnt > ncur); 888 while (cnt > ncur);
530 889
531 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 890 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
532 if (elem * ncur > 4096) 891 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
533 { 892 {
534 ncur *= elem; 893 ncur *= elem;
535 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 894 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
536 ncur = ncur - sizeof (void *) * 4; 895 ncur = ncur - sizeof (void *) * 4;
537 ncur /= elem; 896 ncur /= elem;
538 } 897 }
539 898
540 return ncur; 899 return ncur;
… …
544array_realloc (int elem, void *base, int *cur, int cnt) 903array_realloc (int elem, void *base, int *cur, int cnt)
545{ 904{
546 *cur = array_nextsize (elem, *cur, cnt); 905 *cur = array_nextsize (elem, *cur, cnt);
547 return ev_realloc (base, elem * *cur); 906 return ev_realloc (base, elem * *cur);
548} 907}
908
909#define array_init_zero(base,count) \
910 memset ((void *)(base), 0, sizeof (*(base)) * (count))
549 911
550#define array_needsize(type,base,cur,cnt,init) \ 912#define array_needsize(type,base,cur,cnt,init) \
551 if (expect_false ((cnt) > (cur))) \ 913 if (expect_false ((cnt) > (cur))) \
552 { \ 914 { \
553 int ocur_ = (cur); \ 915 int ocur_ = (cur); \
… …
565 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 927 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
566 } 928 }
567#endif 929#endif
568 930
569#define array_free(stem, idx) \ 931#define array_free(stem, idx) \
570 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 932 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
571 933
572/*****************************************************************************/ 934/*****************************************************************************/
935
936/* dummy callback for pending events */
937static void noinline
938pendingcb (EV_P_ ev_prepare *w, int revents)
939{
940}
573 941
574void noinline 942void noinline
575ev_feed_event (EV_P_ void *w, int revents) 943ev_feed_event (EV_P_ void *w, int revents)
576{ 944{
577 W w_ = (W)w; 945 W w_ = (W)w;
… …
586 pendings [pri][w_->pending - 1].w = w_; 954 pendings [pri][w_->pending - 1].w = w_;
587 pendings [pri][w_->pending - 1].events = revents; 955 pendings [pri][w_->pending - 1].events = revents;
588 } 956 }
589} 957}
590 958
591void inline_speed 959inline_speed void
960feed_reverse (EV_P_ W w)
961{
962 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
963 rfeeds [rfeedcnt++] = w;
964}
965
966inline_size void
967feed_reverse_done (EV_P_ int revents)
968{
969 do
970 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
971 while (rfeedcnt);
972}
973
974inline_speed void
592queue_events (EV_P_ W *events, int eventcnt, int type) 975queue_events (EV_P_ W *events, int eventcnt, int type)
593{ 976{
594 int i; 977 int i;
595 978
596 for (i = 0; i < eventcnt; ++i) 979 for (i = 0; i < eventcnt; ++i)
597 ev_feed_event (EV_A_ events [i], type); 980 ev_feed_event (EV_A_ events [i], type);
598} 981}
599 982
600/*****************************************************************************/ 983/*****************************************************************************/
601 984
602void inline_size 985inline_speed void
603anfds_init (ANFD *base, int count)
604{
605 while (count--)
606 {
607 base->head = 0;
608 base->events = EV_NONE;
609 base->reify = 0;
610
611 ++base;
612 }
613}
614
615void inline_speed
616fd_event (EV_P_ int fd, int revents) 986fd_event_nocheck (EV_P_ int fd, int revents)
617{ 987{
618 ANFD *anfd = anfds + fd; 988 ANFD *anfd = anfds + fd;
619 ev_io *w; 989 ev_io *w;
620 990
621 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 991 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
625 if (ev) 995 if (ev)
626 ev_feed_event (EV_A_ (W)w, ev); 996 ev_feed_event (EV_A_ (W)w, ev);
627 } 997 }
628} 998}
629 999
1000/* do not submit kernel events for fds that have reify set */
1001/* because that means they changed while we were polling for new events */
1002inline_speed void
1003fd_event (EV_P_ int fd, int revents)
1004{
1005 ANFD *anfd = anfds + fd;
1006
1007 if (expect_true (!anfd->reify))
1008 fd_event_nocheck (EV_A_ fd, revents);
1009}
1010
630void 1011void
631ev_feed_fd_event (EV_P_ int fd, int revents) 1012ev_feed_fd_event (EV_P_ int fd, int revents)
632{ 1013{
633 if (fd >= 0 && fd < anfdmax) 1014 if (fd >= 0 && fd < anfdmax)
634 fd_event (EV_A_ fd, revents); 1015 fd_event_nocheck (EV_A_ fd, revents);
635} 1016}
636 1017
637void inline_size 1018/* make sure the external fd watch events are in-sync */
1019/* with the kernel/libev internal state */
1020inline_size void
638fd_reify (EV_P) 1021fd_reify (EV_P)
639{ 1022{
640 int i; 1023 int i;
1024
1025#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1026 for (i = 0; i < fdchangecnt; ++i)
1027 {
1028 int fd = fdchanges [i];
1029 ANFD *anfd = anfds + fd;
1030
1031 if (anfd->reify & EV__IOFDSET && anfd->head)
1032 {
1033 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1034
1035 if (handle != anfd->handle)
1036 {
1037 unsigned long arg;
1038
1039 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1040
1041 /* handle changed, but fd didn't - we need to do it in two steps */
1042 backend_modify (EV_A_ fd, anfd->events, 0);
1043 anfd->events = 0;
1044 anfd->handle = handle;
1045 }
1046 }
1047 }
1048#endif
641 1049
642 for (i = 0; i < fdchangecnt; ++i) 1050 for (i = 0; i < fdchangecnt; ++i)
643 { 1051 {
644 int fd = fdchanges [i]; 1052 int fd = fdchanges [i];
645 ANFD *anfd = anfds + fd; 1053 ANFD *anfd = anfds + fd;
646 ev_io *w; 1054 ev_io *w;
647 1055
648 unsigned char events = 0; 1056 unsigned char o_events = anfd->events;
1057 unsigned char o_reify = anfd->reify;
649 1058
650 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1059 anfd->reify = 0;
651 events |= (unsigned char)w->events;
652 1060
653#if EV_SELECT_IS_WINSOCKET 1061 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
654 if (events)
655 { 1062 {
656 unsigned long argp; 1063 anfd->events = 0;
657 #ifdef EV_FD_TO_WIN32_HANDLE 1064
658 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1065 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
659 #else 1066 anfd->events |= (unsigned char)w->events;
660 anfd->handle = _get_osfhandle (fd); 1067
661 #endif 1068 if (o_events != anfd->events)
662 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 1069 o_reify = EV__IOFDSET; /* actually |= */
663 } 1070 }
664#endif
665 1071
666 { 1072 if (o_reify & EV__IOFDSET)
667 unsigned char o_events = anfd->events;
668 unsigned char o_reify = anfd->reify;
669
670 anfd->reify = 0;
671 anfd->events = events;
672
673 if (o_events != events || o_reify & EV_IOFDSET)
674 backend_modify (EV_A_ fd, o_events, events); 1073 backend_modify (EV_A_ fd, o_events, anfd->events);
675 }
676 } 1074 }
677 1075
678 fdchangecnt = 0; 1076 fdchangecnt = 0;
679} 1077}
680 1078
681void inline_size 1079/* something about the given fd changed */
1080inline_size void
682fd_change (EV_P_ int fd, int flags) 1081fd_change (EV_P_ int fd, int flags)
683{ 1082{
684 unsigned char reify = anfds [fd].reify; 1083 unsigned char reify = anfds [fd].reify;
685 anfds [fd].reify |= flags; 1084 anfds [fd].reify |= flags;
686 1085
… …
690 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1089 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
691 fdchanges [fdchangecnt - 1] = fd; 1090 fdchanges [fdchangecnt - 1] = fd;
692 } 1091 }
693} 1092}
694 1093
695void inline_speed 1094/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1095inline_speed void
696fd_kill (EV_P_ int fd) 1096fd_kill (EV_P_ int fd)
697{ 1097{
698 ev_io *w; 1098 ev_io *w;
699 1099
700 while ((w = (ev_io *)anfds [fd].head)) 1100 while ((w = (ev_io *)anfds [fd].head))
… …
702 ev_io_stop (EV_A_ w); 1102 ev_io_stop (EV_A_ w);
703 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1103 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
704 } 1104 }
705} 1105}
706 1106
707int inline_size 1107/* check whether the given fd is actually valid, for error recovery */
1108inline_size int
708fd_valid (int fd) 1109fd_valid (int fd)
709{ 1110{
710#ifdef _WIN32 1111#ifdef _WIN32
711 return _get_osfhandle (fd) != -1; 1112 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
712#else 1113#else
713 return fcntl (fd, F_GETFD) != -1; 1114 return fcntl (fd, F_GETFD) != -1;
714#endif 1115#endif
715} 1116}
716 1117
… …
720{ 1121{
721 int fd; 1122 int fd;
722 1123
723 for (fd = 0; fd < anfdmax; ++fd) 1124 for (fd = 0; fd < anfdmax; ++fd)
724 if (anfds [fd].events) 1125 if (anfds [fd].events)
725 if (!fd_valid (fd) == -1 && errno == EBADF) 1126 if (!fd_valid (fd) && errno == EBADF)
726 fd_kill (EV_A_ fd); 1127 fd_kill (EV_A_ fd);
727} 1128}
728 1129
729/* called on ENOMEM in select/poll to kill some fds and retry */ 1130/* called on ENOMEM in select/poll to kill some fds and retry */
730static void noinline 1131static void noinline
… …
734 1135
735 for (fd = anfdmax; fd--; ) 1136 for (fd = anfdmax; fd--; )
736 if (anfds [fd].events) 1137 if (anfds [fd].events)
737 { 1138 {
738 fd_kill (EV_A_ fd); 1139 fd_kill (EV_A_ fd);
739 return; 1140 break;
740 } 1141 }
741} 1142}
742 1143
743/* usually called after fork if backend needs to re-arm all fds from scratch */ 1144/* usually called after fork if backend needs to re-arm all fds from scratch */
744static void noinline 1145static void noinline
… …
748 1149
749 for (fd = 0; fd < anfdmax; ++fd) 1150 for (fd = 0; fd < anfdmax; ++fd)
750 if (anfds [fd].events) 1151 if (anfds [fd].events)
751 { 1152 {
752 anfds [fd].events = 0; 1153 anfds [fd].events = 0;
1154 anfds [fd].emask = 0;
753 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1155 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
754 } 1156 }
755} 1157}
756 1158
757/*****************************************************************************/ 1159/* used to prepare libev internal fd's */
758 1160/* this is not fork-safe */
759void inline_speed 1161inline_speed void
760upheap (WT *heap, int k)
761{
762 WT w = heap [k];
763
764 while (k)
765 {
766 int p = (k - 1) >> 1;
767
768 if (heap [p]->at <= w->at)
769 break;
770
771 heap [k] = heap [p];
772 ((W)heap [k])->active = k + 1;
773 k = p;
774 }
775
776 heap [k] = w;
777 ((W)heap [k])->active = k + 1;
778}
779
780void inline_speed
781downheap (WT *heap, int N, int k)
782{
783 WT w = heap [k];
784
785 for (;;)
786 {
787 int c = (k << 1) + 1;
788
789 if (c >= N)
790 break;
791
792 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
793 ? 1 : 0;
794
795 if (w->at <= heap [c]->at)
796 break;
797
798 heap [k] = heap [c];
799 ((W)heap [k])->active = k + 1;
800
801 k = c;
802 }
803
804 heap [k] = w;
805 ((W)heap [k])->active = k + 1;
806}
807
808void inline_size
809adjustheap (WT *heap, int N, int k)
810{
811 upheap (heap, k);
812 downheap (heap, N, k);
813}
814
815/*****************************************************************************/
816
817typedef struct
818{
819 WL head;
820 EV_ATOMIC_T gotsig;
821} ANSIG;
822
823static ANSIG *signals;
824static int signalmax;
825
826static EV_ATOMIC_T gotsig;
827
828void inline_size
829signals_init (ANSIG *base, int count)
830{
831 while (count--)
832 {
833 base->head = 0;
834 base->gotsig = 0;
835
836 ++base;
837 }
838}
839
840/*****************************************************************************/
841
842void inline_speed
843fd_intern (int fd) 1162fd_intern (int fd)
844{ 1163{
845#ifdef _WIN32 1164#ifdef _WIN32
846 int arg = 1; 1165 unsigned long arg = 1;
847 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1166 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
848#else 1167#else
849 fcntl (fd, F_SETFD, FD_CLOEXEC); 1168 fcntl (fd, F_SETFD, FD_CLOEXEC);
850 fcntl (fd, F_SETFL, O_NONBLOCK); 1169 fcntl (fd, F_SETFL, O_NONBLOCK);
851#endif 1170#endif
852} 1171}
853 1172
1173/*****************************************************************************/
1174
1175/*
1176 * the heap functions want a real array index. array index 0 is guaranteed to not
1177 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1178 * the branching factor of the d-tree.
1179 */
1180
1181/*
1182 * at the moment we allow libev the luxury of two heaps,
1183 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1184 * which is more cache-efficient.
1185 * the difference is about 5% with 50000+ watchers.
1186 */
1187#if EV_USE_4HEAP
1188
1189#define DHEAP 4
1190#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1191#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1192#define UPHEAP_DONE(p,k) ((p) == (k))
1193
1194/* away from the root */
1195inline_speed void
1196downheap (ANHE *heap, int N, int k)
1197{
1198 ANHE he = heap [k];
1199 ANHE *E = heap + N + HEAP0;
1200
1201 for (;;)
1202 {
1203 ev_tstamp minat;
1204 ANHE *minpos;
1205 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1206
1207 /* find minimum child */
1208 if (expect_true (pos + DHEAP - 1 < E))
1209 {
1210 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1211 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1212 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1213 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1214 }
1215 else if (pos < E)
1216 {
1217 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1218 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1219 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1220 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1221 }
1222 else
1223 break;
1224
1225 if (ANHE_at (he) <= minat)
1226 break;
1227
1228 heap [k] = *minpos;
1229 ev_active (ANHE_w (*minpos)) = k;
1230
1231 k = minpos - heap;
1232 }
1233
1234 heap [k] = he;
1235 ev_active (ANHE_w (he)) = k;
1236}
1237
1238#else /* 4HEAP */
1239
1240#define HEAP0 1
1241#define HPARENT(k) ((k) >> 1)
1242#define UPHEAP_DONE(p,k) (!(p))
1243
1244/* away from the root */
1245inline_speed void
1246downheap (ANHE *heap, int N, int k)
1247{
1248 ANHE he = heap [k];
1249
1250 for (;;)
1251 {
1252 int c = k << 1;
1253
1254 if (c >= N + HEAP0)
1255 break;
1256
1257 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1258 ? 1 : 0;
1259
1260 if (ANHE_at (he) <= ANHE_at (heap [c]))
1261 break;
1262
1263 heap [k] = heap [c];
1264 ev_active (ANHE_w (heap [k])) = k;
1265
1266 k = c;
1267 }
1268
1269 heap [k] = he;
1270 ev_active (ANHE_w (he)) = k;
1271}
1272#endif
1273
1274/* towards the root */
1275inline_speed void
1276upheap (ANHE *heap, int k)
1277{
1278 ANHE he = heap [k];
1279
1280 for (;;)
1281 {
1282 int p = HPARENT (k);
1283
1284 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1285 break;
1286
1287 heap [k] = heap [p];
1288 ev_active (ANHE_w (heap [k])) = k;
1289 k = p;
1290 }
1291
1292 heap [k] = he;
1293 ev_active (ANHE_w (he)) = k;
1294}
1295
1296/* move an element suitably so it is in a correct place */
1297inline_size void
1298adjustheap (ANHE *heap, int N, int k)
1299{
1300 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1301 upheap (heap, k);
1302 else
1303 downheap (heap, N, k);
1304}
1305
1306/* rebuild the heap: this function is used only once and executed rarely */
1307inline_size void
1308reheap (ANHE *heap, int N)
1309{
1310 int i;
1311
1312 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1313 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1314 for (i = 0; i < N; ++i)
1315 upheap (heap, i + HEAP0);
1316}
1317
1318/*****************************************************************************/
1319
1320/* associate signal watchers to a signal signal */
1321typedef struct
1322{
1323 EV_ATOMIC_T pending;
1324#if EV_MULTIPLICITY
1325 EV_P;
1326#endif
1327 WL head;
1328} ANSIG;
1329
1330static ANSIG signals [EV_NSIG - 1];
1331
1332/*****************************************************************************/
1333
1334#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1335
854static void noinline 1336static void noinline
855evpipe_init (EV_P) 1337evpipe_init (EV_P)
856{ 1338{
857 if (!ev_is_active (&pipeev)) 1339 if (!ev_is_active (&pipe_w))
858 { 1340 {
859#if EV_USE_EVENTFD 1341# if EV_USE_EVENTFD
1342 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1343 if (evfd < 0 && errno == EINVAL)
860 if ((evfd = eventfd (0, 0)) >= 0) 1344 evfd = eventfd (0, 0);
1345
1346 if (evfd >= 0)
861 { 1347 {
862 evpipe [0] = -1; 1348 evpipe [0] = -1;
863 fd_intern (evfd); 1349 fd_intern (evfd); /* doing it twice doesn't hurt */
864 ev_io_set (&pipeev, evfd, EV_READ); 1350 ev_io_set (&pipe_w, evfd, EV_READ);
865 } 1351 }
866 else 1352 else
867#endif 1353# endif
868 { 1354 {
869 while (pipe (evpipe)) 1355 while (pipe (evpipe))
870 syserr ("(libev) error creating signal/async pipe"); 1356 ev_syserr ("(libev) error creating signal/async pipe");
871 1357
872 fd_intern (evpipe [0]); 1358 fd_intern (evpipe [0]);
873 fd_intern (evpipe [1]); 1359 fd_intern (evpipe [1]);
874 ev_io_set (&pipeev, evpipe [0], EV_READ); 1360 ev_io_set (&pipe_w, evpipe [0], EV_READ);
875 } 1361 }
876 1362
877 ev_io_start (EV_A_ &pipeev); 1363 ev_io_start (EV_A_ &pipe_w);
878 ev_unref (EV_A); /* watcher should not keep loop alive */ 1364 ev_unref (EV_A); /* watcher should not keep loop alive */
879 } 1365 }
880} 1366}
881 1367
882void inline_size 1368inline_size void
883evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1369evpipe_write (EV_P_ EV_ATOMIC_T *flag)
884{ 1370{
885 if (!*flag) 1371 if (!*flag)
886 { 1372 {
887 int old_errno = errno; /* save errno because write might clobber it */ 1373 int old_errno = errno; /* save errno because write might clobber it */
1374 char dummy;
888 1375
889 *flag = 1; 1376 *flag = 1;
890 1377
891#if EV_USE_EVENTFD 1378#if EV_USE_EVENTFD
892 if (evfd >= 0) 1379 if (evfd >= 0)
… …
894 uint64_t counter = 1; 1381 uint64_t counter = 1;
895 write (evfd, &counter, sizeof (uint64_t)); 1382 write (evfd, &counter, sizeof (uint64_t));
896 } 1383 }
897 else 1384 else
898#endif 1385#endif
1386 /* win32 people keep sending patches that change this write() to send() */
1387 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1388 /* so when you think this write should be a send instead, please find out */
1389 /* where your send() is from - it's definitely not the microsoft send, and */
1390 /* tell me. thank you. */
899 write (evpipe [1], &old_errno, 1); 1391 write (evpipe [1], &dummy, 1);
900 1392
901 errno = old_errno; 1393 errno = old_errno;
902 } 1394 }
903} 1395}
904 1396
1397/* called whenever the libev signal pipe */
1398/* got some events (signal, async) */
905static void 1399static void
906pipecb (EV_P_ ev_io *iow, int revents) 1400pipecb (EV_P_ ev_io *iow, int revents)
907{ 1401{
1402 int i;
1403
908#if EV_USE_EVENTFD 1404#if EV_USE_EVENTFD
909 if (evfd >= 0) 1405 if (evfd >= 0)
910 { 1406 {
911 uint64_t counter = 1; 1407 uint64_t counter;
912 read (evfd, &counter, sizeof (uint64_t)); 1408 read (evfd, &counter, sizeof (uint64_t));
913 } 1409 }
914 else 1410 else
915#endif 1411#endif
916 { 1412 {
917 char dummy; 1413 char dummy;
1414 /* see discussion in evpipe_write when you think this read should be recv in win32 */
918 read (evpipe [0], &dummy, 1); 1415 read (evpipe [0], &dummy, 1);
919 } 1416 }
920 1417
921 if (gotsig && ev_is_default_loop (EV_A)) 1418#if EV_SIGNAL_ENABLE
922 { 1419 if (sig_pending)
923 int signum; 1420 {
924 gotsig = 0; 1421 sig_pending = 0;
925 1422
926 for (signum = signalmax; signum--; ) 1423 for (i = EV_NSIG - 1; i--; )
927 if (signals [signum].gotsig) 1424 if (expect_false (signals [i].pending))
928 ev_feed_signal_event (EV_A_ signum + 1); 1425 ev_feed_signal_event (EV_A_ i + 1);
929 } 1426 }
1427#endif
930 1428
931#if EV_ASYNC_ENABLE 1429#if EV_ASYNC_ENABLE
932 if (gotasync) 1430 if (async_pending)
933 { 1431 {
934 int i; 1432 async_pending = 0;
935 gotasync = 0;
936 1433
937 for (i = asynccnt; i--; ) 1434 for (i = asynccnt; i--; )
938 if (asyncs [i]->sent) 1435 if (asyncs [i]->sent)
939 { 1436 {
940 asyncs [i]->sent = 0; 1437 asyncs [i]->sent = 0;
… …
944#endif 1441#endif
945} 1442}
946 1443
947/*****************************************************************************/ 1444/*****************************************************************************/
948 1445
1446void
1447ev_feed_signal (int signum)
1448{
1449#if EV_MULTIPLICITY
1450 EV_P = signals [signum - 1].loop;
1451
1452 if (!EV_A)
1453 return;
1454#endif
1455
1456 signals [signum - 1].pending = 1;
1457 evpipe_write (EV_A_ &sig_pending);
1458}
1459
949static void 1460static void
950ev_sighandler (int signum) 1461ev_sighandler (int signum)
951{ 1462{
952#if EV_MULTIPLICITY
953 struct ev_loop *loop = &default_loop_struct;
954#endif
955
956#if _WIN32 1463#ifdef _WIN32
957 signal (signum, ev_sighandler); 1464 signal (signum, ev_sighandler);
958#endif 1465#endif
959 1466
960 signals [signum - 1].gotsig = 1; 1467 ev_feed_signal (signum);
961 evpipe_write (EV_A_ &gotsig);
962} 1468}
963 1469
964void noinline 1470void noinline
965ev_feed_signal_event (EV_P_ int signum) 1471ev_feed_signal_event (EV_P_ int signum)
966{ 1472{
967 WL w; 1473 WL w;
968 1474
1475 if (expect_false (signum <= 0 || signum > EV_NSIG))
1476 return;
1477
1478 --signum;
1479
969#if EV_MULTIPLICITY 1480#if EV_MULTIPLICITY
970 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1481 /* it is permissible to try to feed a signal to the wrong loop */
971#endif 1482 /* or, likely more useful, feeding a signal nobody is waiting for */
972 1483
973 --signum; 1484 if (expect_false (signals [signum].loop != EV_A))
974
975 if (signum < 0 || signum >= signalmax)
976 return; 1485 return;
1486#endif
977 1487
978 signals [signum].gotsig = 0; 1488 signals [signum].pending = 0;
979 1489
980 for (w = signals [signum].head; w; w = w->next) 1490 for (w = signals [signum].head; w; w = w->next)
981 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1491 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
982} 1492}
983 1493
1494#if EV_USE_SIGNALFD
1495static void
1496sigfdcb (EV_P_ ev_io *iow, int revents)
1497{
1498 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1499
1500 for (;;)
1501 {
1502 ssize_t res = read (sigfd, si, sizeof (si));
1503
1504 /* not ISO-C, as res might be -1, but works with SuS */
1505 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1506 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1507
1508 if (res < (ssize_t)sizeof (si))
1509 break;
1510 }
1511}
1512#endif
1513
1514#endif
1515
984/*****************************************************************************/ 1516/*****************************************************************************/
985 1517
1518#if EV_CHILD_ENABLE
986static WL childs [EV_PID_HASHSIZE]; 1519static WL childs [EV_PID_HASHSIZE];
987
988#ifndef _WIN32
989 1520
990static ev_signal childev; 1521static ev_signal childev;
991 1522
992#ifndef WIFCONTINUED 1523#ifndef WIFCONTINUED
993# define WIFCONTINUED(status) 0 1524# define WIFCONTINUED(status) 0
994#endif 1525#endif
995 1526
996void inline_speed 1527/* handle a single child status event */
1528inline_speed void
997child_reap (EV_P_ int chain, int pid, int status) 1529child_reap (EV_P_ int chain, int pid, int status)
998{ 1530{
999 ev_child *w; 1531 ev_child *w;
1000 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1532 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1001 1533
1002 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1534 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1003 { 1535 {
1004 if ((w->pid == pid || !w->pid) 1536 if ((w->pid == pid || !w->pid)
1005 && (!traced || (w->flags & 1))) 1537 && (!traced || (w->flags & 1)))
1006 { 1538 {
1007 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1539 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1014 1546
1015#ifndef WCONTINUED 1547#ifndef WCONTINUED
1016# define WCONTINUED 0 1548# define WCONTINUED 0
1017#endif 1549#endif
1018 1550
1551/* called on sigchld etc., calls waitpid */
1019static void 1552static void
1020childcb (EV_P_ ev_signal *sw, int revents) 1553childcb (EV_P_ ev_signal *sw, int revents)
1021{ 1554{
1022 int pid, status; 1555 int pid, status;
1023 1556
… …
1031 /* make sure we are called again until all children have been reaped */ 1564 /* make sure we are called again until all children have been reaped */
1032 /* we need to do it this way so that the callback gets called before we continue */ 1565 /* we need to do it this way so that the callback gets called before we continue */
1033 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1566 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1034 1567
1035 child_reap (EV_A_ pid, pid, status); 1568 child_reap (EV_A_ pid, pid, status);
1036 if (EV_PID_HASHSIZE > 1) 1569 if ((EV_PID_HASHSIZE) > 1)
1037 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1570 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1038} 1571}
1039 1572
1040#endif 1573#endif
1041 1574
1042/*****************************************************************************/ 1575/*****************************************************************************/
1043 1576
1577#if EV_USE_IOCP
1578# include "ev_iocp.c"
1579#endif
1044#if EV_USE_PORT 1580#if EV_USE_PORT
1045# include "ev_port.c" 1581# include "ev_port.c"
1046#endif 1582#endif
1047#if EV_USE_KQUEUE 1583#if EV_USE_KQUEUE
1048# include "ev_kqueue.c" 1584# include "ev_kqueue.c"
… …
1104 /* kqueue is borked on everything but netbsd apparently */ 1640 /* kqueue is borked on everything but netbsd apparently */
1105 /* it usually doesn't work correctly on anything but sockets and pipes */ 1641 /* it usually doesn't work correctly on anything but sockets and pipes */
1106 flags &= ~EVBACKEND_KQUEUE; 1642 flags &= ~EVBACKEND_KQUEUE;
1107#endif 1643#endif
1108#ifdef __APPLE__ 1644#ifdef __APPLE__
1109 // flags &= ~EVBACKEND_KQUEUE; for documentation 1645 /* only select works correctly on that "unix-certified" platform */
1110 flags &= ~EVBACKEND_POLL; 1646 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1647 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1648#endif
1649#ifdef __FreeBSD__
1650 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1111#endif 1651#endif
1112 1652
1113 return flags; 1653 return flags;
1114} 1654}
1115 1655
… …
1117ev_embeddable_backends (void) 1657ev_embeddable_backends (void)
1118{ 1658{
1119 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1659 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1120 1660
1121 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1661 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1122 /* please fix it and tell me how to detect the fix */ 1662 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1123 flags &= ~EVBACKEND_EPOLL; 1663 flags &= ~EVBACKEND_EPOLL;
1124 1664
1125 return flags; 1665 return flags;
1126} 1666}
1127 1667
1128unsigned int 1668unsigned int
1129ev_backend (EV_P) 1669ev_backend (EV_P)
1130{ 1670{
1131 return backend; 1671 return backend;
1132} 1672}
1133 1673
1674#if EV_FEATURE_API
1134unsigned int 1675unsigned int
1135ev_loop_count (EV_P) 1676ev_iteration (EV_P)
1136{ 1677{
1137 return loop_count; 1678 return loop_count;
1138} 1679}
1139 1680
1681unsigned int
1682ev_depth (EV_P)
1683{
1684 return loop_depth;
1685}
1686
1140void 1687void
1141ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1688ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1142{ 1689{
1143 io_blocktime = interval; 1690 io_blocktime = interval;
1144} 1691}
… …
1147ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1694ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1148{ 1695{
1149 timeout_blocktime = interval; 1696 timeout_blocktime = interval;
1150} 1697}
1151 1698
1699void
1700ev_set_userdata (EV_P_ void *data)
1701{
1702 userdata = data;
1703}
1704
1705void *
1706ev_userdata (EV_P)
1707{
1708 return userdata;
1709}
1710
1711void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1712{
1713 invoke_cb = invoke_pending_cb;
1714}
1715
1716void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1717{
1718 release_cb = release;
1719 acquire_cb = acquire;
1720}
1721#endif
1722
1723/* initialise a loop structure, must be zero-initialised */
1152static void noinline 1724static void noinline
1153loop_init (EV_P_ unsigned int flags) 1725loop_init (EV_P_ unsigned int flags)
1154{ 1726{
1155 if (!backend) 1727 if (!backend)
1156 { 1728 {
1729 origflags = flags;
1730
1731#if EV_USE_REALTIME
1732 if (!have_realtime)
1733 {
1734 struct timespec ts;
1735
1736 if (!clock_gettime (CLOCK_REALTIME, &ts))
1737 have_realtime = 1;
1738 }
1739#endif
1740
1157#if EV_USE_MONOTONIC 1741#if EV_USE_MONOTONIC
1742 if (!have_monotonic)
1158 { 1743 {
1159 struct timespec ts; 1744 struct timespec ts;
1745
1160 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1746 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1161 have_monotonic = 1; 1747 have_monotonic = 1;
1162 } 1748 }
1163#endif 1749#endif
1750
1751 /* pid check not overridable via env */
1752#ifndef _WIN32
1753 if (flags & EVFLAG_FORKCHECK)
1754 curpid = getpid ();
1755#endif
1756
1757 if (!(flags & EVFLAG_NOENV)
1758 && !enable_secure ()
1759 && getenv ("LIBEV_FLAGS"))
1760 flags = atoi (getenv ("LIBEV_FLAGS"));
1164 1761
1165 ev_rt_now = ev_time (); 1762 ev_rt_now = ev_time ();
1166 mn_now = get_clock (); 1763 mn_now = get_clock ();
1167 now_floor = mn_now; 1764 now_floor = mn_now;
1168 rtmn_diff = ev_rt_now - mn_now; 1765 rtmn_diff = ev_rt_now - mn_now;
1766#if EV_FEATURE_API
1767 invoke_cb = ev_invoke_pending;
1768#endif
1169 1769
1170 io_blocktime = 0.; 1770 io_blocktime = 0.;
1171 timeout_blocktime = 0.; 1771 timeout_blocktime = 0.;
1172 backend = 0; 1772 backend = 0;
1173 backend_fd = -1; 1773 backend_fd = -1;
1174 gotasync = 0; 1774 sig_pending = 0;
1775#if EV_ASYNC_ENABLE
1776 async_pending = 0;
1777#endif
1175#if EV_USE_INOTIFY 1778#if EV_USE_INOTIFY
1176 fs_fd = -2; 1779 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1177#endif 1780#endif
1178 1781#if EV_USE_SIGNALFD
1179 /* pid check not overridable via env */ 1782 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1180#ifndef _WIN32
1181 if (flags & EVFLAG_FORKCHECK)
1182 curpid = getpid ();
1183#endif 1783#endif
1184 1784
1185 if (!(flags & EVFLAG_NOENV) 1785 if (!(flags & EVBACKEND_MASK))
1186 && !enable_secure ()
1187 && getenv ("LIBEV_FLAGS"))
1188 flags = atoi (getenv ("LIBEV_FLAGS"));
1189
1190 if (!(flags & 0x0000ffffUL))
1191 flags |= ev_recommended_backends (); 1786 flags |= ev_recommended_backends ();
1192 1787
1788#if EV_USE_IOCP
1789 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1790#endif
1193#if EV_USE_PORT 1791#if EV_USE_PORT
1194 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1792 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1195#endif 1793#endif
1196#if EV_USE_KQUEUE 1794#if EV_USE_KQUEUE
1197 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1795 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1204#endif 1802#endif
1205#if EV_USE_SELECT 1803#if EV_USE_SELECT
1206 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1804 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1207#endif 1805#endif
1208 1806
1807 ev_prepare_init (&pending_w, pendingcb);
1808
1809#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1209 ev_init (&pipeev, pipecb); 1810 ev_init (&pipe_w, pipecb);
1210 ev_set_priority (&pipeev, EV_MAXPRI); 1811 ev_set_priority (&pipe_w, EV_MAXPRI);
1812#endif
1211 } 1813 }
1212} 1814}
1213 1815
1214static void noinline 1816/* free up a loop structure */
1817void
1215loop_destroy (EV_P) 1818ev_loop_destroy (EV_P)
1216{ 1819{
1217 int i; 1820 int i;
1218 1821
1822#if EV_MULTIPLICITY
1823 /* mimic free (0) */
1824 if (!EV_A)
1825 return;
1826#endif
1827
1828#if EV_CLEANUP_ENABLE
1829 /* queue cleanup watchers (and execute them) */
1830 if (expect_false (cleanupcnt))
1831 {
1832 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1833 EV_INVOKE_PENDING;
1834 }
1835#endif
1836
1837#if EV_CHILD_ENABLE
1838 if (ev_is_active (&childev))
1839 {
1840 ev_ref (EV_A); /* child watcher */
1841 ev_signal_stop (EV_A_ &childev);
1842 }
1843#endif
1844
1219 if (ev_is_active (&pipeev)) 1845 if (ev_is_active (&pipe_w))
1220 { 1846 {
1221 ev_ref (EV_A); /* signal watcher */ 1847 /*ev_ref (EV_A);*/
1222 ev_io_stop (EV_A_ &pipeev); 1848 /*ev_io_stop (EV_A_ &pipe_w);*/
1223 1849
1224#if EV_USE_EVENTFD 1850#if EV_USE_EVENTFD
1225 if (evfd >= 0) 1851 if (evfd >= 0)
1226 close (evfd); 1852 close (evfd);
1227#endif 1853#endif
1228 1854
1229 if (evpipe [0] >= 0) 1855 if (evpipe [0] >= 0)
1230 { 1856 {
1231 close (evpipe [0]); 1857 EV_WIN32_CLOSE_FD (evpipe [0]);
1232 close (evpipe [1]); 1858 EV_WIN32_CLOSE_FD (evpipe [1]);
1233 } 1859 }
1234 } 1860 }
1861
1862#if EV_USE_SIGNALFD
1863 if (ev_is_active (&sigfd_w))
1864 close (sigfd);
1865#endif
1235 1866
1236#if EV_USE_INOTIFY 1867#if EV_USE_INOTIFY
1237 if (fs_fd >= 0) 1868 if (fs_fd >= 0)
1238 close (fs_fd); 1869 close (fs_fd);
1239#endif 1870#endif
1240 1871
1241 if (backend_fd >= 0) 1872 if (backend_fd >= 0)
1242 close (backend_fd); 1873 close (backend_fd);
1243 1874
1875#if EV_USE_IOCP
1876 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1877#endif
1244#if EV_USE_PORT 1878#if EV_USE_PORT
1245 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1879 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1246#endif 1880#endif
1247#if EV_USE_KQUEUE 1881#if EV_USE_KQUEUE
1248 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1882 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1263#if EV_IDLE_ENABLE 1897#if EV_IDLE_ENABLE
1264 array_free (idle, [i]); 1898 array_free (idle, [i]);
1265#endif 1899#endif
1266 } 1900 }
1267 1901
1268 ev_free (anfds); anfdmax = 0; 1902 ev_free (anfds); anfds = 0; anfdmax = 0;
1269 1903
1270 /* have to use the microsoft-never-gets-it-right macro */ 1904 /* have to use the microsoft-never-gets-it-right macro */
1905 array_free (rfeed, EMPTY);
1271 array_free (fdchange, EMPTY); 1906 array_free (fdchange, EMPTY);
1272 array_free (timer, EMPTY); 1907 array_free (timer, EMPTY);
1273#if EV_PERIODIC_ENABLE 1908#if EV_PERIODIC_ENABLE
1274 array_free (periodic, EMPTY); 1909 array_free (periodic, EMPTY);
1275#endif 1910#endif
1276#if EV_FORK_ENABLE 1911#if EV_FORK_ENABLE
1277 array_free (fork, EMPTY); 1912 array_free (fork, EMPTY);
1278#endif 1913#endif
1914#if EV_CLEANUP_ENABLE
1915 array_free (cleanup, EMPTY);
1916#endif
1279 array_free (prepare, EMPTY); 1917 array_free (prepare, EMPTY);
1280 array_free (check, EMPTY); 1918 array_free (check, EMPTY);
1281#if EV_ASYNC_ENABLE 1919#if EV_ASYNC_ENABLE
1282 array_free (async, EMPTY); 1920 array_free (async, EMPTY);
1283#endif 1921#endif
1284 1922
1285 backend = 0; 1923 backend = 0;
1286}
1287 1924
1925#if EV_MULTIPLICITY
1926 if (ev_is_default_loop (EV_A))
1927#endif
1928 ev_default_loop_ptr = 0;
1929#if EV_MULTIPLICITY
1930 else
1931 ev_free (EV_A);
1932#endif
1933}
1934
1935#if EV_USE_INOTIFY
1288void inline_size infy_fork (EV_P); 1936inline_size void infy_fork (EV_P);
1937#endif
1289 1938
1290void inline_size 1939inline_size void
1291loop_fork (EV_P) 1940loop_fork (EV_P)
1292{ 1941{
1293#if EV_USE_PORT 1942#if EV_USE_PORT
1294 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1943 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1295#endif 1944#endif
… …
1301#endif 1950#endif
1302#if EV_USE_INOTIFY 1951#if EV_USE_INOTIFY
1303 infy_fork (EV_A); 1952 infy_fork (EV_A);
1304#endif 1953#endif
1305 1954
1306 if (ev_is_active (&pipeev)) 1955 if (ev_is_active (&pipe_w))
1307 { 1956 {
1308 /* this "locks" the handlers against writing to the pipe */ 1957 /* this "locks" the handlers against writing to the pipe */
1309 /* while we modify the fd vars */ 1958 /* while we modify the fd vars */
1310 gotsig = 1; 1959 sig_pending = 1;
1311#if EV_ASYNC_ENABLE 1960#if EV_ASYNC_ENABLE
1312 gotasync = 1; 1961 async_pending = 1;
1313#endif 1962#endif
1314 1963
1315 ev_ref (EV_A); 1964 ev_ref (EV_A);
1316 ev_io_stop (EV_A_ &pipeev); 1965 ev_io_stop (EV_A_ &pipe_w);
1317 1966
1318#if EV_USE_EVENTFD 1967#if EV_USE_EVENTFD
1319 if (evfd >= 0) 1968 if (evfd >= 0)
1320 close (evfd); 1969 close (evfd);
1321#endif 1970#endif
1322 1971
1323 if (evpipe [0] >= 0) 1972 if (evpipe [0] >= 0)
1324 { 1973 {
1325 close (evpipe [0]); 1974 EV_WIN32_CLOSE_FD (evpipe [0]);
1326 close (evpipe [1]); 1975 EV_WIN32_CLOSE_FD (evpipe [1]);
1327 } 1976 }
1328 1977
1978#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1329 evpipe_init (EV_A); 1979 evpipe_init (EV_A);
1330 /* now iterate over everything, in case we missed something */ 1980 /* now iterate over everything, in case we missed something */
1331 pipecb (EV_A_ &pipeev, EV_READ); 1981 pipecb (EV_A_ &pipe_w, EV_READ);
1982#endif
1332 } 1983 }
1333 1984
1334 postfork = 0; 1985 postfork = 0;
1335} 1986}
1987
1988#if EV_MULTIPLICITY
1989
1990struct ev_loop *
1991ev_loop_new (unsigned int flags)
1992{
1993 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1994
1995 memset (EV_A, 0, sizeof (struct ev_loop));
1996 loop_init (EV_A_ flags);
1997
1998 if (ev_backend (EV_A))
1999 return EV_A;
2000
2001 ev_free (EV_A);
2002 return 0;
2003}
2004
2005#endif /* multiplicity */
2006
2007#if EV_VERIFY
2008static void noinline
2009verify_watcher (EV_P_ W w)
2010{
2011 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2012
2013 if (w->pending)
2014 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2015}
2016
2017static void noinline
2018verify_heap (EV_P_ ANHE *heap, int N)
2019{
2020 int i;
2021
2022 for (i = HEAP0; i < N + HEAP0; ++i)
2023 {
2024 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
2025 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
2026 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
2027
2028 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2029 }
2030}
2031
2032static void noinline
2033array_verify (EV_P_ W *ws, int cnt)
2034{
2035 while (cnt--)
2036 {
2037 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
2038 verify_watcher (EV_A_ ws [cnt]);
2039 }
2040}
2041#endif
2042
2043#if EV_FEATURE_API
2044void
2045ev_verify (EV_P)
2046{
2047#if EV_VERIFY
2048 int i;
2049 WL w;
2050
2051 assert (activecnt >= -1);
2052
2053 assert (fdchangemax >= fdchangecnt);
2054 for (i = 0; i < fdchangecnt; ++i)
2055 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2056
2057 assert (anfdmax >= 0);
2058 for (i = 0; i < anfdmax; ++i)
2059 for (w = anfds [i].head; w; w = w->next)
2060 {
2061 verify_watcher (EV_A_ (W)w);
2062 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2063 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2064 }
2065
2066 assert (timermax >= timercnt);
2067 verify_heap (EV_A_ timers, timercnt);
2068
2069#if EV_PERIODIC_ENABLE
2070 assert (periodicmax >= periodiccnt);
2071 verify_heap (EV_A_ periodics, periodiccnt);
2072#endif
2073
2074 for (i = NUMPRI; i--; )
2075 {
2076 assert (pendingmax [i] >= pendingcnt [i]);
2077#if EV_IDLE_ENABLE
2078 assert (idleall >= 0);
2079 assert (idlemax [i] >= idlecnt [i]);
2080 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
2081#endif
2082 }
2083
2084#if EV_FORK_ENABLE
2085 assert (forkmax >= forkcnt);
2086 array_verify (EV_A_ (W *)forks, forkcnt);
2087#endif
2088
2089#if EV_CLEANUP_ENABLE
2090 assert (cleanupmax >= cleanupcnt);
2091 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2092#endif
2093
2094#if EV_ASYNC_ENABLE
2095 assert (asyncmax >= asynccnt);
2096 array_verify (EV_A_ (W *)asyncs, asynccnt);
2097#endif
2098
2099#if EV_PREPARE_ENABLE
2100 assert (preparemax >= preparecnt);
2101 array_verify (EV_A_ (W *)prepares, preparecnt);
2102#endif
2103
2104#if EV_CHECK_ENABLE
2105 assert (checkmax >= checkcnt);
2106 array_verify (EV_A_ (W *)checks, checkcnt);
2107#endif
2108
2109# if 0
2110#if EV_CHILD_ENABLE
2111 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2112 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2113#endif
2114# endif
2115#endif
2116}
2117#endif
1336 2118
1337#if EV_MULTIPLICITY 2119#if EV_MULTIPLICITY
1338struct ev_loop * 2120struct ev_loop *
1339ev_loop_new (unsigned int flags)
1340{
1341 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1342
1343 memset (loop, 0, sizeof (struct ev_loop));
1344
1345 loop_init (EV_A_ flags);
1346
1347 if (ev_backend (EV_A))
1348 return loop;
1349
1350 return 0;
1351}
1352
1353void
1354ev_loop_destroy (EV_P)
1355{
1356 loop_destroy (EV_A);
1357 ev_free (loop);
1358}
1359
1360void
1361ev_loop_fork (EV_P)
1362{
1363 postfork = 1; /* must be in line with ev_default_fork */
1364}
1365
1366#endif
1367
1368#if EV_MULTIPLICITY
1369struct ev_loop *
1370ev_default_loop_init (unsigned int flags)
1371#else 2121#else
1372int 2122int
2123#endif
1373ev_default_loop (unsigned int flags) 2124ev_default_loop (unsigned int flags)
1374#endif
1375{ 2125{
1376 if (!ev_default_loop_ptr) 2126 if (!ev_default_loop_ptr)
1377 { 2127 {
1378#if EV_MULTIPLICITY 2128#if EV_MULTIPLICITY
1379 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2129 EV_P = ev_default_loop_ptr = &default_loop_struct;
1380#else 2130#else
1381 ev_default_loop_ptr = 1; 2131 ev_default_loop_ptr = 1;
1382#endif 2132#endif
1383 2133
1384 loop_init (EV_A_ flags); 2134 loop_init (EV_A_ flags);
1385 2135
1386 if (ev_backend (EV_A)) 2136 if (ev_backend (EV_A))
1387 { 2137 {
1388#ifndef _WIN32 2138#if EV_CHILD_ENABLE
1389 ev_signal_init (&childev, childcb, SIGCHLD); 2139 ev_signal_init (&childev, childcb, SIGCHLD);
1390 ev_set_priority (&childev, EV_MAXPRI); 2140 ev_set_priority (&childev, EV_MAXPRI);
1391 ev_signal_start (EV_A_ &childev); 2141 ev_signal_start (EV_A_ &childev);
1392 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2142 ev_unref (EV_A); /* child watcher should not keep loop alive */
1393#endif 2143#endif
… …
1398 2148
1399 return ev_default_loop_ptr; 2149 return ev_default_loop_ptr;
1400} 2150}
1401 2151
1402void 2152void
1403ev_default_destroy (void) 2153ev_loop_fork (EV_P)
1404{ 2154{
1405#if EV_MULTIPLICITY
1406 struct ev_loop *loop = ev_default_loop_ptr;
1407#endif
1408
1409#ifndef _WIN32
1410 ev_ref (EV_A); /* child watcher */
1411 ev_signal_stop (EV_A_ &childev);
1412#endif
1413
1414 loop_destroy (EV_A);
1415}
1416
1417void
1418ev_default_fork (void)
1419{
1420#if EV_MULTIPLICITY
1421 struct ev_loop *loop = ev_default_loop_ptr;
1422#endif
1423
1424 if (backend)
1425 postfork = 1; /* must be in line with ev_loop_fork */ 2155 postfork = 1; /* must be in line with ev_default_fork */
1426} 2156}
1427 2157
1428/*****************************************************************************/ 2158/*****************************************************************************/
1429 2159
1430void 2160void
1431ev_invoke (EV_P_ void *w, int revents) 2161ev_invoke (EV_P_ void *w, int revents)
1432{ 2162{
1433 EV_CB_INVOKE ((W)w, revents); 2163 EV_CB_INVOKE ((W)w, revents);
1434} 2164}
1435 2165
1436void inline_speed 2166unsigned int
1437call_pending (EV_P) 2167ev_pending_count (EV_P)
2168{
2169 int pri;
2170 unsigned int count = 0;
2171
2172 for (pri = NUMPRI; pri--; )
2173 count += pendingcnt [pri];
2174
2175 return count;
2176}
2177
2178void noinline
2179ev_invoke_pending (EV_P)
1438{ 2180{
1439 int pri; 2181 int pri;
1440 2182
1441 for (pri = NUMPRI; pri--; ) 2183 for (pri = NUMPRI; pri--; )
1442 while (pendingcnt [pri]) 2184 while (pendingcnt [pri])
1443 { 2185 {
1444 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2186 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1445 2187
1446 if (expect_true (p->w))
1447 {
1448 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1449
1450 p->w->pending = 0; 2188 p->w->pending = 0;
1451 EV_CB_INVOKE (p->w, p->events); 2189 EV_CB_INVOKE (p->w, p->events);
1452 } 2190 EV_FREQUENT_CHECK;
1453 } 2191 }
1454} 2192}
1455 2193
1456void inline_size
1457timers_reify (EV_P)
1458{
1459 while (timercnt && ((WT)timers [0])->at <= mn_now)
1460 {
1461 ev_timer *w = (ev_timer *)timers [0];
1462
1463 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1464
1465 /* first reschedule or stop timer */
1466 if (w->repeat)
1467 {
1468 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1469
1470 ((WT)w)->at += w->repeat;
1471 if (((WT)w)->at < mn_now)
1472 ((WT)w)->at = mn_now;
1473
1474 downheap (timers, timercnt, 0);
1475 }
1476 else
1477 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1478
1479 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1480 }
1481}
1482
1483#if EV_PERIODIC_ENABLE
1484void inline_size
1485periodics_reify (EV_P)
1486{
1487 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1488 {
1489 ev_periodic *w = (ev_periodic *)periodics [0];
1490
1491 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1492
1493 /* first reschedule or stop timer */
1494 if (w->reschedule_cb)
1495 {
1496 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1497 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1498 downheap (periodics, periodiccnt, 0);
1499 }
1500 else if (w->interval)
1501 {
1502 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1503 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1504 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1505 downheap (periodics, periodiccnt, 0);
1506 }
1507 else
1508 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1509
1510 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1511 }
1512}
1513
1514static void noinline
1515periodics_reschedule (EV_P)
1516{
1517 int i;
1518
1519 /* adjust periodics after time jump */
1520 for (i = 0; i < periodiccnt; ++i)
1521 {
1522 ev_periodic *w = (ev_periodic *)periodics [i];
1523
1524 if (w->reschedule_cb)
1525 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1526 else if (w->interval)
1527 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1528 }
1529
1530 /* now rebuild the heap */
1531 for (i = periodiccnt >> 1; i--; )
1532 downheap (periodics, periodiccnt, i);
1533}
1534#endif
1535
1536#if EV_IDLE_ENABLE 2194#if EV_IDLE_ENABLE
1537void inline_size 2195/* make idle watchers pending. this handles the "call-idle */
2196/* only when higher priorities are idle" logic */
2197inline_size void
1538idle_reify (EV_P) 2198idle_reify (EV_P)
1539{ 2199{
1540 if (expect_false (idleall)) 2200 if (expect_false (idleall))
1541 { 2201 {
1542 int pri; 2202 int pri;
… …
1554 } 2214 }
1555 } 2215 }
1556} 2216}
1557#endif 2217#endif
1558 2218
1559void inline_speed 2219/* make timers pending */
2220inline_size void
2221timers_reify (EV_P)
2222{
2223 EV_FREQUENT_CHECK;
2224
2225 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
2226 {
2227 do
2228 {
2229 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2230
2231 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2232
2233 /* first reschedule or stop timer */
2234 if (w->repeat)
2235 {
2236 ev_at (w) += w->repeat;
2237 if (ev_at (w) < mn_now)
2238 ev_at (w) = mn_now;
2239
2240 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2241
2242 ANHE_at_cache (timers [HEAP0]);
2243 downheap (timers, timercnt, HEAP0);
2244 }
2245 else
2246 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2247
2248 EV_FREQUENT_CHECK;
2249 feed_reverse (EV_A_ (W)w);
2250 }
2251 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2252
2253 feed_reverse_done (EV_A_ EV_TIMER);
2254 }
2255}
2256
2257#if EV_PERIODIC_ENABLE
2258
2259static void noinline
2260periodic_recalc (EV_P_ ev_periodic *w)
2261{
2262 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2263 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2264
2265 /* the above almost always errs on the low side */
2266 while (at <= ev_rt_now)
2267 {
2268 ev_tstamp nat = at + w->interval;
2269
2270 /* when resolution fails us, we use ev_rt_now */
2271 if (expect_false (nat == at))
2272 {
2273 at = ev_rt_now;
2274 break;
2275 }
2276
2277 at = nat;
2278 }
2279
2280 ev_at (w) = at;
2281}
2282
2283/* make periodics pending */
2284inline_size void
2285periodics_reify (EV_P)
2286{
2287 EV_FREQUENT_CHECK;
2288
2289 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2290 {
2291 int feed_count = 0;
2292
2293 do
2294 {
2295 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2296
2297 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2298
2299 /* first reschedule or stop timer */
2300 if (w->reschedule_cb)
2301 {
2302 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2303
2304 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2305
2306 ANHE_at_cache (periodics [HEAP0]);
2307 downheap (periodics, periodiccnt, HEAP0);
2308 }
2309 else if (w->interval)
2310 {
2311 periodic_recalc (EV_A_ w);
2312 ANHE_at_cache (periodics [HEAP0]);
2313 downheap (periodics, periodiccnt, HEAP0);
2314 }
2315 else
2316 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2317
2318 EV_FREQUENT_CHECK;
2319 feed_reverse (EV_A_ (W)w);
2320 }
2321 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2322
2323 feed_reverse_done (EV_A_ EV_PERIODIC);
2324 }
2325}
2326
2327/* simply recalculate all periodics */
2328/* TODO: maybe ensure that at least one event happens when jumping forward? */
2329static void noinline
2330periodics_reschedule (EV_P)
2331{
2332 int i;
2333
2334 /* adjust periodics after time jump */
2335 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2336 {
2337 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2338
2339 if (w->reschedule_cb)
2340 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2341 else if (w->interval)
2342 periodic_recalc (EV_A_ w);
2343
2344 ANHE_at_cache (periodics [i]);
2345 }
2346
2347 reheap (periodics, periodiccnt);
2348}
2349#endif
2350
2351/* adjust all timers by a given offset */
2352static void noinline
2353timers_reschedule (EV_P_ ev_tstamp adjust)
2354{
2355 int i;
2356
2357 for (i = 0; i < timercnt; ++i)
2358 {
2359 ANHE *he = timers + i + HEAP0;
2360 ANHE_w (*he)->at += adjust;
2361 ANHE_at_cache (*he);
2362 }
2363}
2364
2365/* fetch new monotonic and realtime times from the kernel */
2366/* also detect if there was a timejump, and act accordingly */
2367inline_speed void
1560time_update (EV_P_ ev_tstamp max_block) 2368time_update (EV_P_ ev_tstamp max_block)
1561{ 2369{
1562 int i;
1563
1564#if EV_USE_MONOTONIC 2370#if EV_USE_MONOTONIC
1565 if (expect_true (have_monotonic)) 2371 if (expect_true (have_monotonic))
1566 { 2372 {
2373 int i;
1567 ev_tstamp odiff = rtmn_diff; 2374 ev_tstamp odiff = rtmn_diff;
1568 2375
1569 mn_now = get_clock (); 2376 mn_now = get_clock ();
1570 2377
1571 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2378 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1587 * doesn't hurt either as we only do this on time-jumps or 2394 * doesn't hurt either as we only do this on time-jumps or
1588 * in the unlikely event of having been preempted here. 2395 * in the unlikely event of having been preempted here.
1589 */ 2396 */
1590 for (i = 4; --i; ) 2397 for (i = 4; --i; )
1591 { 2398 {
2399 ev_tstamp diff;
1592 rtmn_diff = ev_rt_now - mn_now; 2400 rtmn_diff = ev_rt_now - mn_now;
1593 2401
1594 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2402 diff = odiff - rtmn_diff;
2403
2404 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1595 return; /* all is well */ 2405 return; /* all is well */
1596 2406
1597 ev_rt_now = ev_time (); 2407 ev_rt_now = ev_time ();
1598 mn_now = get_clock (); 2408 mn_now = get_clock ();
1599 now_floor = mn_now; 2409 now_floor = mn_now;
1600 } 2410 }
1601 2411
2412 /* no timer adjustment, as the monotonic clock doesn't jump */
2413 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1602# if EV_PERIODIC_ENABLE 2414# if EV_PERIODIC_ENABLE
1603 periodics_reschedule (EV_A); 2415 periodics_reschedule (EV_A);
1604# endif 2416# endif
1605 /* no timer adjustment, as the monotonic clock doesn't jump */
1606 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1607 } 2417 }
1608 else 2418 else
1609#endif 2419#endif
1610 { 2420 {
1611 ev_rt_now = ev_time (); 2421 ev_rt_now = ev_time ();
1612 2422
1613 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2423 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1614 { 2424 {
2425 /* adjust timers. this is easy, as the offset is the same for all of them */
2426 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1615#if EV_PERIODIC_ENABLE 2427#if EV_PERIODIC_ENABLE
1616 periodics_reschedule (EV_A); 2428 periodics_reschedule (EV_A);
1617#endif 2429#endif
1618 /* adjust timers. this is easy, as the offset is the same for all of them */
1619 for (i = 0; i < timercnt; ++i)
1620 ((WT)timers [i])->at += ev_rt_now - mn_now;
1621 } 2430 }
1622 2431
1623 mn_now = ev_rt_now; 2432 mn_now = ev_rt_now;
1624 } 2433 }
1625} 2434}
1626 2435
1627void 2436void
1628ev_ref (EV_P)
1629{
1630 ++activecnt;
1631}
1632
1633void
1634ev_unref (EV_P)
1635{
1636 --activecnt;
1637}
1638
1639static int loop_done;
1640
1641void
1642ev_loop (EV_P_ int flags) 2437ev_run (EV_P_ int flags)
1643{ 2438{
2439#if EV_FEATURE_API
2440 ++loop_depth;
2441#endif
2442
2443 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2444
1644 loop_done = EVUNLOOP_CANCEL; 2445 loop_done = EVBREAK_CANCEL;
1645 2446
1646 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2447 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1647 2448
1648 do 2449 do
1649 { 2450 {
2451#if EV_VERIFY >= 2
2452 ev_verify (EV_A);
2453#endif
2454
1650#ifndef _WIN32 2455#ifndef _WIN32
1651 if (expect_false (curpid)) /* penalise the forking check even more */ 2456 if (expect_false (curpid)) /* penalise the forking check even more */
1652 if (expect_false (getpid () != curpid)) 2457 if (expect_false (getpid () != curpid))
1653 { 2458 {
1654 curpid = getpid (); 2459 curpid = getpid ();
… …
1660 /* we might have forked, so queue fork handlers */ 2465 /* we might have forked, so queue fork handlers */
1661 if (expect_false (postfork)) 2466 if (expect_false (postfork))
1662 if (forkcnt) 2467 if (forkcnt)
1663 { 2468 {
1664 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2469 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1665 call_pending (EV_A); 2470 EV_INVOKE_PENDING;
1666 } 2471 }
1667#endif 2472#endif
1668 2473
2474#if EV_PREPARE_ENABLE
1669 /* queue prepare watchers (and execute them) */ 2475 /* queue prepare watchers (and execute them) */
1670 if (expect_false (preparecnt)) 2476 if (expect_false (preparecnt))
1671 { 2477 {
1672 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2478 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1673 call_pending (EV_A); 2479 EV_INVOKE_PENDING;
1674 } 2480 }
2481#endif
1675 2482
1676 if (expect_false (!activecnt)) 2483 if (expect_false (loop_done))
1677 break; 2484 break;
1678 2485
1679 /* we might have forked, so reify kernel state if necessary */ 2486 /* we might have forked, so reify kernel state if necessary */
1680 if (expect_false (postfork)) 2487 if (expect_false (postfork))
1681 loop_fork (EV_A); 2488 loop_fork (EV_A);
… …
1686 /* calculate blocking time */ 2493 /* calculate blocking time */
1687 { 2494 {
1688 ev_tstamp waittime = 0.; 2495 ev_tstamp waittime = 0.;
1689 ev_tstamp sleeptime = 0.; 2496 ev_tstamp sleeptime = 0.;
1690 2497
2498 /* remember old timestamp for io_blocktime calculation */
2499 ev_tstamp prev_mn_now = mn_now;
2500
2501 /* update time to cancel out callback processing overhead */
2502 time_update (EV_A_ 1e100);
2503
1691 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2504 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
1692 { 2505 {
1693 /* update time to cancel out callback processing overhead */
1694 time_update (EV_A_ 1e100);
1695
1696 waittime = MAX_BLOCKTIME; 2506 waittime = MAX_BLOCKTIME;
1697 2507
1698 if (timercnt) 2508 if (timercnt)
1699 { 2509 {
1700 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2510 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1701 if (waittime > to) waittime = to; 2511 if (waittime > to) waittime = to;
1702 } 2512 }
1703 2513
1704#if EV_PERIODIC_ENABLE 2514#if EV_PERIODIC_ENABLE
1705 if (periodiccnt) 2515 if (periodiccnt)
1706 { 2516 {
1707 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2517 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1708 if (waittime > to) waittime = to; 2518 if (waittime > to) waittime = to;
1709 } 2519 }
1710#endif 2520#endif
1711 2521
2522 /* don't let timeouts decrease the waittime below timeout_blocktime */
1712 if (expect_false (waittime < timeout_blocktime)) 2523 if (expect_false (waittime < timeout_blocktime))
1713 waittime = timeout_blocktime; 2524 waittime = timeout_blocktime;
1714 2525
1715 sleeptime = waittime - backend_fudge; 2526 /* at this point, we NEED to wait, so we have to ensure */
2527 /* to pass a minimum nonzero value to the backend */
2528 if (expect_false (waittime < backend_mintime))
2529 waittime = backend_mintime;
1716 2530
2531 /* extra check because io_blocktime is commonly 0 */
1717 if (expect_true (sleeptime > io_blocktime)) 2532 if (expect_false (io_blocktime))
1718 sleeptime = io_blocktime;
1719
1720 if (sleeptime)
1721 { 2533 {
2534 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2535
2536 if (sleeptime > waittime - backend_mintime)
2537 sleeptime = waittime - backend_mintime;
2538
2539 if (expect_true (sleeptime > 0.))
2540 {
1722 ev_sleep (sleeptime); 2541 ev_sleep (sleeptime);
1723 waittime -= sleeptime; 2542 waittime -= sleeptime;
2543 }
1724 } 2544 }
1725 } 2545 }
1726 2546
2547#if EV_FEATURE_API
1727 ++loop_count; 2548 ++loop_count;
2549#endif
2550 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1728 backend_poll (EV_A_ waittime); 2551 backend_poll (EV_A_ waittime);
2552 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
1729 2553
1730 /* update ev_rt_now, do magic */ 2554 /* update ev_rt_now, do magic */
1731 time_update (EV_A_ waittime + sleeptime); 2555 time_update (EV_A_ waittime + sleeptime);
1732 } 2556 }
1733 2557
… …
1740#if EV_IDLE_ENABLE 2564#if EV_IDLE_ENABLE
1741 /* queue idle watchers unless other events are pending */ 2565 /* queue idle watchers unless other events are pending */
1742 idle_reify (EV_A); 2566 idle_reify (EV_A);
1743#endif 2567#endif
1744 2568
2569#if EV_CHECK_ENABLE
1745 /* queue check watchers, to be executed first */ 2570 /* queue check watchers, to be executed first */
1746 if (expect_false (checkcnt)) 2571 if (expect_false (checkcnt))
1747 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2572 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2573#endif
1748 2574
1749 call_pending (EV_A); 2575 EV_INVOKE_PENDING;
1750 } 2576 }
1751 while (expect_true ( 2577 while (expect_true (
1752 activecnt 2578 activecnt
1753 && !loop_done 2579 && !loop_done
1754 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2580 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1755 )); 2581 ));
1756 2582
1757 if (loop_done == EVUNLOOP_ONE) 2583 if (loop_done == EVBREAK_ONE)
1758 loop_done = EVUNLOOP_CANCEL; 2584 loop_done = EVBREAK_CANCEL;
1759}
1760 2585
2586#if EV_FEATURE_API
2587 --loop_depth;
2588#endif
2589}
2590
1761void 2591void
1762ev_unloop (EV_P_ int how) 2592ev_break (EV_P_ int how)
1763{ 2593{
1764 loop_done = how; 2594 loop_done = how;
1765} 2595}
1766 2596
2597void
2598ev_ref (EV_P)
2599{
2600 ++activecnt;
2601}
2602
2603void
2604ev_unref (EV_P)
2605{
2606 --activecnt;
2607}
2608
2609void
2610ev_now_update (EV_P)
2611{
2612 time_update (EV_A_ 1e100);
2613}
2614
2615void
2616ev_suspend (EV_P)
2617{
2618 ev_now_update (EV_A);
2619}
2620
2621void
2622ev_resume (EV_P)
2623{
2624 ev_tstamp mn_prev = mn_now;
2625
2626 ev_now_update (EV_A);
2627 timers_reschedule (EV_A_ mn_now - mn_prev);
2628#if EV_PERIODIC_ENABLE
2629 /* TODO: really do this? */
2630 periodics_reschedule (EV_A);
2631#endif
2632}
2633
1767/*****************************************************************************/ 2634/*****************************************************************************/
2635/* singly-linked list management, used when the expected list length is short */
1768 2636
1769void inline_size 2637inline_size void
1770wlist_add (WL *head, WL elem) 2638wlist_add (WL *head, WL elem)
1771{ 2639{
1772 elem->next = *head; 2640 elem->next = *head;
1773 *head = elem; 2641 *head = elem;
1774} 2642}
1775 2643
1776void inline_size 2644inline_size void
1777wlist_del (WL *head, WL elem) 2645wlist_del (WL *head, WL elem)
1778{ 2646{
1779 while (*head) 2647 while (*head)
1780 { 2648 {
1781 if (*head == elem) 2649 if (expect_true (*head == elem))
1782 { 2650 {
1783 *head = elem->next; 2651 *head = elem->next;
1784 return; 2652 break;
1785 } 2653 }
1786 2654
1787 head = &(*head)->next; 2655 head = &(*head)->next;
1788 } 2656 }
1789} 2657}
1790 2658
1791void inline_speed 2659/* internal, faster, version of ev_clear_pending */
2660inline_speed void
1792clear_pending (EV_P_ W w) 2661clear_pending (EV_P_ W w)
1793{ 2662{
1794 if (w->pending) 2663 if (w->pending)
1795 { 2664 {
1796 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2665 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1797 w->pending = 0; 2666 w->pending = 0;
1798 } 2667 }
1799} 2668}
1800 2669
1801int 2670int
… …
1805 int pending = w_->pending; 2674 int pending = w_->pending;
1806 2675
1807 if (expect_true (pending)) 2676 if (expect_true (pending))
1808 { 2677 {
1809 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2678 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2679 p->w = (W)&pending_w;
1810 w_->pending = 0; 2680 w_->pending = 0;
1811 p->w = 0;
1812 return p->events; 2681 return p->events;
1813 } 2682 }
1814 else 2683 else
1815 return 0; 2684 return 0;
1816} 2685}
1817 2686
1818void inline_size 2687inline_size void
1819pri_adjust (EV_P_ W w) 2688pri_adjust (EV_P_ W w)
1820{ 2689{
1821 int pri = w->priority; 2690 int pri = ev_priority (w);
1822 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2691 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1823 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2692 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1824 w->priority = pri; 2693 ev_set_priority (w, pri);
1825} 2694}
1826 2695
1827void inline_speed 2696inline_speed void
1828ev_start (EV_P_ W w, int active) 2697ev_start (EV_P_ W w, int active)
1829{ 2698{
1830 pri_adjust (EV_A_ w); 2699 pri_adjust (EV_A_ w);
1831 w->active = active; 2700 w->active = active;
1832 ev_ref (EV_A); 2701 ev_ref (EV_A);
1833} 2702}
1834 2703
1835void inline_size 2704inline_size void
1836ev_stop (EV_P_ W w) 2705ev_stop (EV_P_ W w)
1837{ 2706{
1838 ev_unref (EV_A); 2707 ev_unref (EV_A);
1839 w->active = 0; 2708 w->active = 0;
1840} 2709}
… …
1847 int fd = w->fd; 2716 int fd = w->fd;
1848 2717
1849 if (expect_false (ev_is_active (w))) 2718 if (expect_false (ev_is_active (w)))
1850 return; 2719 return;
1851 2720
1852 assert (("ev_io_start called with negative fd", fd >= 0)); 2721 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2722 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2723
2724 EV_FREQUENT_CHECK;
1853 2725
1854 ev_start (EV_A_ (W)w, 1); 2726 ev_start (EV_A_ (W)w, 1);
1855 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2727 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1856 wlist_add (&anfds[fd].head, (WL)w); 2728 wlist_add (&anfds[fd].head, (WL)w);
1857 2729
1858 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2730 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1859 w->events &= ~EV_IOFDSET; 2731 w->events &= ~EV__IOFDSET;
2732
2733 EV_FREQUENT_CHECK;
1860} 2734}
1861 2735
1862void noinline 2736void noinline
1863ev_io_stop (EV_P_ ev_io *w) 2737ev_io_stop (EV_P_ ev_io *w)
1864{ 2738{
1865 clear_pending (EV_A_ (W)w); 2739 clear_pending (EV_A_ (W)w);
1866 if (expect_false (!ev_is_active (w))) 2740 if (expect_false (!ev_is_active (w)))
1867 return; 2741 return;
1868 2742
1869 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2743 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2744
2745 EV_FREQUENT_CHECK;
1870 2746
1871 wlist_del (&anfds[w->fd].head, (WL)w); 2747 wlist_del (&anfds[w->fd].head, (WL)w);
1872 ev_stop (EV_A_ (W)w); 2748 ev_stop (EV_A_ (W)w);
1873 2749
1874 fd_change (EV_A_ w->fd, 1); 2750 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2751
2752 EV_FREQUENT_CHECK;
1875} 2753}
1876 2754
1877void noinline 2755void noinline
1878ev_timer_start (EV_P_ ev_timer *w) 2756ev_timer_start (EV_P_ ev_timer *w)
1879{ 2757{
1880 if (expect_false (ev_is_active (w))) 2758 if (expect_false (ev_is_active (w)))
1881 return; 2759 return;
1882 2760
1883 ((WT)w)->at += mn_now; 2761 ev_at (w) += mn_now;
1884 2762
1885 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2763 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1886 2764
2765 EV_FREQUENT_CHECK;
2766
2767 ++timercnt;
1887 ev_start (EV_A_ (W)w, ++timercnt); 2768 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1888 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2769 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1889 timers [timercnt - 1] = (WT)w; 2770 ANHE_w (timers [ev_active (w)]) = (WT)w;
1890 upheap (timers, timercnt - 1); 2771 ANHE_at_cache (timers [ev_active (w)]);
2772 upheap (timers, ev_active (w));
1891 2773
2774 EV_FREQUENT_CHECK;
2775
1892 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2776 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1893} 2777}
1894 2778
1895void noinline 2779void noinline
1896ev_timer_stop (EV_P_ ev_timer *w) 2780ev_timer_stop (EV_P_ ev_timer *w)
1897{ 2781{
1898 clear_pending (EV_A_ (W)w); 2782 clear_pending (EV_A_ (W)w);
1899 if (expect_false (!ev_is_active (w))) 2783 if (expect_false (!ev_is_active (w)))
1900 return; 2784 return;
1901 2785
1902 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2786 EV_FREQUENT_CHECK;
1903 2787
1904 { 2788 {
1905 int active = ((W)w)->active; 2789 int active = ev_active (w);
1906 2790
2791 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2792
2793 --timercnt;
2794
1907 if (expect_true (--active < --timercnt)) 2795 if (expect_true (active < timercnt + HEAP0))
1908 { 2796 {
1909 timers [active] = timers [timercnt]; 2797 timers [active] = timers [timercnt + HEAP0];
1910 adjustheap (timers, timercnt, active); 2798 adjustheap (timers, timercnt, active);
1911 } 2799 }
1912 } 2800 }
1913 2801
1914 ((WT)w)->at -= mn_now; 2802 ev_at (w) -= mn_now;
1915 2803
1916 ev_stop (EV_A_ (W)w); 2804 ev_stop (EV_A_ (W)w);
2805
2806 EV_FREQUENT_CHECK;
1917} 2807}
1918 2808
1919void noinline 2809void noinline
1920ev_timer_again (EV_P_ ev_timer *w) 2810ev_timer_again (EV_P_ ev_timer *w)
1921{ 2811{
2812 EV_FREQUENT_CHECK;
2813
1922 if (ev_is_active (w)) 2814 if (ev_is_active (w))
1923 { 2815 {
1924 if (w->repeat) 2816 if (w->repeat)
1925 { 2817 {
1926 ((WT)w)->at = mn_now + w->repeat; 2818 ev_at (w) = mn_now + w->repeat;
2819 ANHE_at_cache (timers [ev_active (w)]);
1927 adjustheap (timers, timercnt, ((W)w)->active - 1); 2820 adjustheap (timers, timercnt, ev_active (w));
1928 } 2821 }
1929 else 2822 else
1930 ev_timer_stop (EV_A_ w); 2823 ev_timer_stop (EV_A_ w);
1931 } 2824 }
1932 else if (w->repeat) 2825 else if (w->repeat)
1933 { 2826 {
1934 w->at = w->repeat; 2827 ev_at (w) = w->repeat;
1935 ev_timer_start (EV_A_ w); 2828 ev_timer_start (EV_A_ w);
1936 } 2829 }
2830
2831 EV_FREQUENT_CHECK;
2832}
2833
2834ev_tstamp
2835ev_timer_remaining (EV_P_ ev_timer *w)
2836{
2837 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1937} 2838}
1938 2839
1939#if EV_PERIODIC_ENABLE 2840#if EV_PERIODIC_ENABLE
1940void noinline 2841void noinline
1941ev_periodic_start (EV_P_ ev_periodic *w) 2842ev_periodic_start (EV_P_ ev_periodic *w)
1942{ 2843{
1943 if (expect_false (ev_is_active (w))) 2844 if (expect_false (ev_is_active (w)))
1944 return; 2845 return;
1945 2846
1946 if (w->reschedule_cb) 2847 if (w->reschedule_cb)
1947 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2848 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1948 else if (w->interval) 2849 else if (w->interval)
1949 { 2850 {
1950 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2851 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1951 /* this formula differs from the one in periodic_reify because we do not always round up */ 2852 periodic_recalc (EV_A_ w);
1952 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1953 } 2853 }
1954 else 2854 else
1955 ((WT)w)->at = w->offset; 2855 ev_at (w) = w->offset;
1956 2856
2857 EV_FREQUENT_CHECK;
2858
2859 ++periodiccnt;
1957 ev_start (EV_A_ (W)w, ++periodiccnt); 2860 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1958 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2861 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1959 periodics [periodiccnt - 1] = (WT)w; 2862 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1960 upheap (periodics, periodiccnt - 1); 2863 ANHE_at_cache (periodics [ev_active (w)]);
2864 upheap (periodics, ev_active (w));
1961 2865
2866 EV_FREQUENT_CHECK;
2867
1962 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2868 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1963} 2869}
1964 2870
1965void noinline 2871void noinline
1966ev_periodic_stop (EV_P_ ev_periodic *w) 2872ev_periodic_stop (EV_P_ ev_periodic *w)
1967{ 2873{
1968 clear_pending (EV_A_ (W)w); 2874 clear_pending (EV_A_ (W)w);
1969 if (expect_false (!ev_is_active (w))) 2875 if (expect_false (!ev_is_active (w)))
1970 return; 2876 return;
1971 2877
1972 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 2878 EV_FREQUENT_CHECK;
1973 2879
1974 { 2880 {
1975 int active = ((W)w)->active; 2881 int active = ev_active (w);
1976 2882
2883 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2884
2885 --periodiccnt;
2886
1977 if (expect_true (--active < --periodiccnt)) 2887 if (expect_true (active < periodiccnt + HEAP0))
1978 { 2888 {
1979 periodics [active] = periodics [periodiccnt]; 2889 periodics [active] = periodics [periodiccnt + HEAP0];
1980 adjustheap (periodics, periodiccnt, active); 2890 adjustheap (periodics, periodiccnt, active);
1981 } 2891 }
1982 } 2892 }
1983 2893
1984 ev_stop (EV_A_ (W)w); 2894 ev_stop (EV_A_ (W)w);
2895
2896 EV_FREQUENT_CHECK;
1985} 2897}
1986 2898
1987void noinline 2899void noinline
1988ev_periodic_again (EV_P_ ev_periodic *w) 2900ev_periodic_again (EV_P_ ev_periodic *w)
1989{ 2901{
… …
1995 2907
1996#ifndef SA_RESTART 2908#ifndef SA_RESTART
1997# define SA_RESTART 0 2909# define SA_RESTART 0
1998#endif 2910#endif
1999 2911
2912#if EV_SIGNAL_ENABLE
2913
2000void noinline 2914void noinline
2001ev_signal_start (EV_P_ ev_signal *w) 2915ev_signal_start (EV_P_ ev_signal *w)
2002{ 2916{
2003#if EV_MULTIPLICITY
2004 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2005#endif
2006 if (expect_false (ev_is_active (w))) 2917 if (expect_false (ev_is_active (w)))
2007 return; 2918 return;
2008 2919
2009 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2920 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2010 2921
2011 evpipe_init (EV_A); 2922#if EV_MULTIPLICITY
2923 assert (("libev: a signal must not be attached to two different loops",
2924 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2012 2925
2926 signals [w->signum - 1].loop = EV_A;
2927#endif
2928
2929 EV_FREQUENT_CHECK;
2930
2931#if EV_USE_SIGNALFD
2932 if (sigfd == -2)
2013 { 2933 {
2014#ifndef _WIN32 2934 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2015 sigset_t full, prev; 2935 if (sigfd < 0 && errno == EINVAL)
2016 sigfillset (&full); 2936 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2017 sigprocmask (SIG_SETMASK, &full, &prev);
2018#endif
2019 2937
2020 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2938 if (sigfd >= 0)
2939 {
2940 fd_intern (sigfd); /* doing it twice will not hurt */
2021 2941
2022#ifndef _WIN32 2942 sigemptyset (&sigfd_set);
2023 sigprocmask (SIG_SETMASK, &prev, 0); 2943
2024#endif 2944 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2945 ev_set_priority (&sigfd_w, EV_MAXPRI);
2946 ev_io_start (EV_A_ &sigfd_w);
2947 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2948 }
2025 } 2949 }
2950
2951 if (sigfd >= 0)
2952 {
2953 /* TODO: check .head */
2954 sigaddset (&sigfd_set, w->signum);
2955 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2956
2957 signalfd (sigfd, &sigfd_set, 0);
2958 }
2959#endif
2026 2960
2027 ev_start (EV_A_ (W)w, 1); 2961 ev_start (EV_A_ (W)w, 1);
2028 wlist_add (&signals [w->signum - 1].head, (WL)w); 2962 wlist_add (&signals [w->signum - 1].head, (WL)w);
2029 2963
2030 if (!((WL)w)->next) 2964 if (!((WL)w)->next)
2965# if EV_USE_SIGNALFD
2966 if (sigfd < 0) /*TODO*/
2967# endif
2031 { 2968 {
2032#if _WIN32 2969# ifdef _WIN32
2970 evpipe_init (EV_A);
2971
2033 signal (w->signum, ev_sighandler); 2972 signal (w->signum, ev_sighandler);
2034#else 2973# else
2035 struct sigaction sa; 2974 struct sigaction sa;
2975
2976 evpipe_init (EV_A);
2977
2036 sa.sa_handler = ev_sighandler; 2978 sa.sa_handler = ev_sighandler;
2037 sigfillset (&sa.sa_mask); 2979 sigfillset (&sa.sa_mask);
2038 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2980 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2039 sigaction (w->signum, &sa, 0); 2981 sigaction (w->signum, &sa, 0);
2982
2983 if (origflags & EVFLAG_NOSIGMASK)
2984 {
2985 sigemptyset (&sa.sa_mask);
2986 sigaddset (&sa.sa_mask, w->signum);
2987 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2988 }
2040#endif 2989#endif
2041 } 2990 }
2991
2992 EV_FREQUENT_CHECK;
2042} 2993}
2043 2994
2044void noinline 2995void noinline
2045ev_signal_stop (EV_P_ ev_signal *w) 2996ev_signal_stop (EV_P_ ev_signal *w)
2046{ 2997{
2047 clear_pending (EV_A_ (W)w); 2998 clear_pending (EV_A_ (W)w);
2048 if (expect_false (!ev_is_active (w))) 2999 if (expect_false (!ev_is_active (w)))
2049 return; 3000 return;
2050 3001
3002 EV_FREQUENT_CHECK;
3003
2051 wlist_del (&signals [w->signum - 1].head, (WL)w); 3004 wlist_del (&signals [w->signum - 1].head, (WL)w);
2052 ev_stop (EV_A_ (W)w); 3005 ev_stop (EV_A_ (W)w);
2053 3006
2054 if (!signals [w->signum - 1].head) 3007 if (!signals [w->signum - 1].head)
3008 {
3009#if EV_MULTIPLICITY
3010 signals [w->signum - 1].loop = 0; /* unattach from signal */
3011#endif
3012#if EV_USE_SIGNALFD
3013 if (sigfd >= 0)
3014 {
3015 sigset_t ss;
3016
3017 sigemptyset (&ss);
3018 sigaddset (&ss, w->signum);
3019 sigdelset (&sigfd_set, w->signum);
3020
3021 signalfd (sigfd, &sigfd_set, 0);
3022 sigprocmask (SIG_UNBLOCK, &ss, 0);
3023 }
3024 else
3025#endif
2055 signal (w->signum, SIG_DFL); 3026 signal (w->signum, SIG_DFL);
3027 }
3028
3029 EV_FREQUENT_CHECK;
2056} 3030}
3031
3032#endif
3033
3034#if EV_CHILD_ENABLE
2057 3035
2058void 3036void
2059ev_child_start (EV_P_ ev_child *w) 3037ev_child_start (EV_P_ ev_child *w)
2060{ 3038{
2061#if EV_MULTIPLICITY 3039#if EV_MULTIPLICITY
2062 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3040 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2063#endif 3041#endif
2064 if (expect_false (ev_is_active (w))) 3042 if (expect_false (ev_is_active (w)))
2065 return; 3043 return;
2066 3044
3045 EV_FREQUENT_CHECK;
3046
2067 ev_start (EV_A_ (W)w, 1); 3047 ev_start (EV_A_ (W)w, 1);
2068 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3048 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
3049
3050 EV_FREQUENT_CHECK;
2069} 3051}
2070 3052
2071void 3053void
2072ev_child_stop (EV_P_ ev_child *w) 3054ev_child_stop (EV_P_ ev_child *w)
2073{ 3055{
2074 clear_pending (EV_A_ (W)w); 3056 clear_pending (EV_A_ (W)w);
2075 if (expect_false (!ev_is_active (w))) 3057 if (expect_false (!ev_is_active (w)))
2076 return; 3058 return;
2077 3059
3060 EV_FREQUENT_CHECK;
3061
2078 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3062 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2079 ev_stop (EV_A_ (W)w); 3063 ev_stop (EV_A_ (W)w);
3064
3065 EV_FREQUENT_CHECK;
2080} 3066}
3067
3068#endif
2081 3069
2082#if EV_STAT_ENABLE 3070#if EV_STAT_ENABLE
2083 3071
2084# ifdef _WIN32 3072# ifdef _WIN32
2085# undef lstat 3073# undef lstat
2086# define lstat(a,b) _stati64 (a,b) 3074# define lstat(a,b) _stati64 (a,b)
2087# endif 3075# endif
2088 3076
2089#define DEF_STAT_INTERVAL 5.0074891 3077#define DEF_STAT_INTERVAL 5.0074891
3078#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2090#define MIN_STAT_INTERVAL 0.1074891 3079#define MIN_STAT_INTERVAL 0.1074891
2091 3080
2092static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3081static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2093 3082
2094#if EV_USE_INOTIFY 3083#if EV_USE_INOTIFY
2095# define EV_INOTIFY_BUFSIZE 8192 3084
3085/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3086# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2096 3087
2097static void noinline 3088static void noinline
2098infy_add (EV_P_ ev_stat *w) 3089infy_add (EV_P_ ev_stat *w)
2099{ 3090{
2100 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); 3091 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);
2101 3092
2102 if (w->wd < 0) 3093 if (w->wd >= 0)
3094 {
3095 struct statfs sfs;
3096
3097 /* now local changes will be tracked by inotify, but remote changes won't */
3098 /* unless the filesystem is known to be local, we therefore still poll */
3099 /* also do poll on <2.6.25, but with normal frequency */
3100
3101 if (!fs_2625)
3102 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3103 else if (!statfs (w->path, &sfs)
3104 && (sfs.f_type == 0x1373 /* devfs */
3105 || sfs.f_type == 0xEF53 /* ext2/3 */
3106 || sfs.f_type == 0x3153464a /* jfs */
3107 || sfs.f_type == 0x52654973 /* reiser3 */
3108 || sfs.f_type == 0x01021994 /* tempfs */
3109 || sfs.f_type == 0x58465342 /* xfs */))
3110 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3111 else
3112 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2103 { 3113 }
2104 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3114 else
3115 {
3116 /* can't use inotify, continue to stat */
3117 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2105 3118
2106 /* monitor some parent directory for speedup hints */ 3119 /* if path is not there, monitor some parent directory for speedup hints */
3120 /* note that exceeding the hardcoded path limit is not a correctness issue, */
3121 /* but an efficiency issue only */
2107 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3122 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2108 { 3123 {
2109 char path [4096]; 3124 char path [4096];
2110 strcpy (path, w->path); 3125 strcpy (path, w->path);
2111 3126
… …
2114 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3129 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2115 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3130 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2116 3131
2117 char *pend = strrchr (path, '/'); 3132 char *pend = strrchr (path, '/');
2118 3133
2119 if (!pend) 3134 if (!pend || pend == path)
2120 break; /* whoops, no '/', complain to your admin */ 3135 break;
2121 3136
2122 *pend = 0; 3137 *pend = 0;
2123 w->wd = inotify_add_watch (fs_fd, path, mask); 3138 w->wd = inotify_add_watch (fs_fd, path, mask);
2124 } 3139 }
2125 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3140 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2126 } 3141 }
2127 } 3142 }
2128 else
2129 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2130 3143
2131 if (w->wd >= 0) 3144 if (w->wd >= 0)
2132 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3145 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3146
3147 /* now re-arm timer, if required */
3148 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3149 ev_timer_again (EV_A_ &w->timer);
3150 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2133} 3151}
2134 3152
2135static void noinline 3153static void noinline
2136infy_del (EV_P_ ev_stat *w) 3154infy_del (EV_P_ ev_stat *w)
2137{ 3155{
… …
2140 3158
2141 if (wd < 0) 3159 if (wd < 0)
2142 return; 3160 return;
2143 3161
2144 w->wd = -2; 3162 w->wd = -2;
2145 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3163 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2146 wlist_del (&fs_hash [slot].head, (WL)w); 3164 wlist_del (&fs_hash [slot].head, (WL)w);
2147 3165
2148 /* remove this watcher, if others are watching it, they will rearm */ 3166 /* remove this watcher, if others are watching it, they will rearm */
2149 inotify_rm_watch (fs_fd, wd); 3167 inotify_rm_watch (fs_fd, wd);
2150} 3168}
2151 3169
2152static void noinline 3170static void noinline
2153infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3171infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2154{ 3172{
2155 if (slot < 0) 3173 if (slot < 0)
2156 /* overflow, need to check for all hahs slots */ 3174 /* overflow, need to check for all hash slots */
2157 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3175 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2158 infy_wd (EV_A_ slot, wd, ev); 3176 infy_wd (EV_A_ slot, wd, ev);
2159 else 3177 else
2160 { 3178 {
2161 WL w_; 3179 WL w_;
2162 3180
2163 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3181 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2164 { 3182 {
2165 ev_stat *w = (ev_stat *)w_; 3183 ev_stat *w = (ev_stat *)w_;
2166 w_ = w_->next; /* lets us remove this watcher and all before it */ 3184 w_ = w_->next; /* lets us remove this watcher and all before it */
2167 3185
2168 if (w->wd == wd || wd == -1) 3186 if (w->wd == wd || wd == -1)
2169 { 3187 {
2170 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3188 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2171 { 3189 {
3190 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2172 w->wd = -1; 3191 w->wd = -1;
2173 infy_add (EV_A_ w); /* re-add, no matter what */ 3192 infy_add (EV_A_ w); /* re-add, no matter what */
2174 } 3193 }
2175 3194
2176 stat_timer_cb (EV_A_ &w->timer, 0); 3195 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2181 3200
2182static void 3201static void
2183infy_cb (EV_P_ ev_io *w, int revents) 3202infy_cb (EV_P_ ev_io *w, int revents)
2184{ 3203{
2185 char buf [EV_INOTIFY_BUFSIZE]; 3204 char buf [EV_INOTIFY_BUFSIZE];
2186 struct inotify_event *ev = (struct inotify_event *)buf;
2187 int ofs; 3205 int ofs;
2188 int len = read (fs_fd, buf, sizeof (buf)); 3206 int len = read (fs_fd, buf, sizeof (buf));
2189 3207
2190 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3208 for (ofs = 0; ofs < len; )
3209 {
3210 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2191 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3211 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3212 ofs += sizeof (struct inotify_event) + ev->len;
3213 }
2192} 3214}
2193 3215
2194void inline_size 3216inline_size void
3217ev_check_2625 (EV_P)
3218{
3219 /* kernels < 2.6.25 are borked
3220 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3221 */
3222 if (ev_linux_version () < 0x020619)
3223 return;
3224
3225 fs_2625 = 1;
3226}
3227
3228inline_size int
3229infy_newfd (void)
3230{
3231#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3232 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3233 if (fd >= 0)
3234 return fd;
3235#endif
3236 return inotify_init ();
3237}
3238
3239inline_size void
2195infy_init (EV_P) 3240infy_init (EV_P)
2196{ 3241{
2197 if (fs_fd != -2) 3242 if (fs_fd != -2)
2198 return; 3243 return;
2199 3244
3245 fs_fd = -1;
3246
3247 ev_check_2625 (EV_A);
3248
2200 fs_fd = inotify_init (); 3249 fs_fd = infy_newfd ();
2201 3250
2202 if (fs_fd >= 0) 3251 if (fs_fd >= 0)
2203 { 3252 {
3253 fd_intern (fs_fd);
2204 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3254 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2205 ev_set_priority (&fs_w, EV_MAXPRI); 3255 ev_set_priority (&fs_w, EV_MAXPRI);
2206 ev_io_start (EV_A_ &fs_w); 3256 ev_io_start (EV_A_ &fs_w);
3257 ev_unref (EV_A);
2207 } 3258 }
2208} 3259}
2209 3260
2210void inline_size 3261inline_size void
2211infy_fork (EV_P) 3262infy_fork (EV_P)
2212{ 3263{
2213 int slot; 3264 int slot;
2214 3265
2215 if (fs_fd < 0) 3266 if (fs_fd < 0)
2216 return; 3267 return;
2217 3268
3269 ev_ref (EV_A);
3270 ev_io_stop (EV_A_ &fs_w);
2218 close (fs_fd); 3271 close (fs_fd);
2219 fs_fd = inotify_init (); 3272 fs_fd = infy_newfd ();
2220 3273
3274 if (fs_fd >= 0)
3275 {
3276 fd_intern (fs_fd);
3277 ev_io_set (&fs_w, fs_fd, EV_READ);
3278 ev_io_start (EV_A_ &fs_w);
3279 ev_unref (EV_A);
3280 }
3281
2221 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3282 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2222 { 3283 {
2223 WL w_ = fs_hash [slot].head; 3284 WL w_ = fs_hash [slot].head;
2224 fs_hash [slot].head = 0; 3285 fs_hash [slot].head = 0;
2225 3286
2226 while (w_) 3287 while (w_)
… …
2231 w->wd = -1; 3292 w->wd = -1;
2232 3293
2233 if (fs_fd >= 0) 3294 if (fs_fd >= 0)
2234 infy_add (EV_A_ w); /* re-add, no matter what */ 3295 infy_add (EV_A_ w); /* re-add, no matter what */
2235 else 3296 else
3297 {
3298 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3299 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2236 ev_timer_start (EV_A_ &w->timer); 3300 ev_timer_again (EV_A_ &w->timer);
3301 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3302 }
2237 } 3303 }
2238
2239 } 3304 }
2240} 3305}
2241 3306
3307#endif
3308
3309#ifdef _WIN32
3310# define EV_LSTAT(p,b) _stati64 (p, b)
3311#else
3312# define EV_LSTAT(p,b) lstat (p, b)
2242#endif 3313#endif
2243 3314
2244void 3315void
2245ev_stat_stat (EV_P_ ev_stat *w) 3316ev_stat_stat (EV_P_ ev_stat *w)
2246{ 3317{
… …
2253static void noinline 3324static void noinline
2254stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3325stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2255{ 3326{
2256 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3327 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2257 3328
2258 /* we copy this here each the time so that */ 3329 ev_statdata prev = w->attr;
2259 /* prev has the old value when the callback gets invoked */
2260 w->prev = w->attr;
2261 ev_stat_stat (EV_A_ w); 3330 ev_stat_stat (EV_A_ w);
2262 3331
2263 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3332 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2264 if ( 3333 if (
2265 w->prev.st_dev != w->attr.st_dev 3334 prev.st_dev != w->attr.st_dev
2266 || w->prev.st_ino != w->attr.st_ino 3335 || prev.st_ino != w->attr.st_ino
2267 || w->prev.st_mode != w->attr.st_mode 3336 || prev.st_mode != w->attr.st_mode
2268 || w->prev.st_nlink != w->attr.st_nlink 3337 || prev.st_nlink != w->attr.st_nlink
2269 || w->prev.st_uid != w->attr.st_uid 3338 || prev.st_uid != w->attr.st_uid
2270 || w->prev.st_gid != w->attr.st_gid 3339 || prev.st_gid != w->attr.st_gid
2271 || w->prev.st_rdev != w->attr.st_rdev 3340 || prev.st_rdev != w->attr.st_rdev
2272 || w->prev.st_size != w->attr.st_size 3341 || prev.st_size != w->attr.st_size
2273 || w->prev.st_atime != w->attr.st_atime 3342 || prev.st_atime != w->attr.st_atime
2274 || w->prev.st_mtime != w->attr.st_mtime 3343 || prev.st_mtime != w->attr.st_mtime
2275 || w->prev.st_ctime != w->attr.st_ctime 3344 || prev.st_ctime != w->attr.st_ctime
2276 ) { 3345 ) {
3346 /* we only update w->prev on actual differences */
3347 /* in case we test more often than invoke the callback, */
3348 /* to ensure that prev is always different to attr */
3349 w->prev = prev;
3350
2277 #if EV_USE_INOTIFY 3351 #if EV_USE_INOTIFY
3352 if (fs_fd >= 0)
3353 {
2278 infy_del (EV_A_ w); 3354 infy_del (EV_A_ w);
2279 infy_add (EV_A_ w); 3355 infy_add (EV_A_ w);
2280 ev_stat_stat (EV_A_ w); /* avoid race... */ 3356 ev_stat_stat (EV_A_ w); /* avoid race... */
3357 }
2281 #endif 3358 #endif
2282 3359
2283 ev_feed_event (EV_A_ w, EV_STAT); 3360 ev_feed_event (EV_A_ w, EV_STAT);
2284 } 3361 }
2285} 3362}
… …
2288ev_stat_start (EV_P_ ev_stat *w) 3365ev_stat_start (EV_P_ ev_stat *w)
2289{ 3366{
2290 if (expect_false (ev_is_active (w))) 3367 if (expect_false (ev_is_active (w)))
2291 return; 3368 return;
2292 3369
2293 /* since we use memcmp, we need to clear any padding data etc. */
2294 memset (&w->prev, 0, sizeof (ev_statdata));
2295 memset (&w->attr, 0, sizeof (ev_statdata));
2296
2297 ev_stat_stat (EV_A_ w); 3370 ev_stat_stat (EV_A_ w);
2298 3371
3372 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2299 if (w->interval < MIN_STAT_INTERVAL) 3373 w->interval = MIN_STAT_INTERVAL;
2300 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2301 3374
2302 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3375 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2303 ev_set_priority (&w->timer, ev_priority (w)); 3376 ev_set_priority (&w->timer, ev_priority (w));
2304 3377
2305#if EV_USE_INOTIFY 3378#if EV_USE_INOTIFY
2306 infy_init (EV_A); 3379 infy_init (EV_A);
2307 3380
2308 if (fs_fd >= 0) 3381 if (fs_fd >= 0)
2309 infy_add (EV_A_ w); 3382 infy_add (EV_A_ w);
2310 else 3383 else
2311#endif 3384#endif
3385 {
2312 ev_timer_start (EV_A_ &w->timer); 3386 ev_timer_again (EV_A_ &w->timer);
3387 ev_unref (EV_A);
3388 }
2313 3389
2314 ev_start (EV_A_ (W)w, 1); 3390 ev_start (EV_A_ (W)w, 1);
3391
3392 EV_FREQUENT_CHECK;
2315} 3393}
2316 3394
2317void 3395void
2318ev_stat_stop (EV_P_ ev_stat *w) 3396ev_stat_stop (EV_P_ ev_stat *w)
2319{ 3397{
2320 clear_pending (EV_A_ (W)w); 3398 clear_pending (EV_A_ (W)w);
2321 if (expect_false (!ev_is_active (w))) 3399 if (expect_false (!ev_is_active (w)))
2322 return; 3400 return;
2323 3401
3402 EV_FREQUENT_CHECK;
3403
2324#if EV_USE_INOTIFY 3404#if EV_USE_INOTIFY
2325 infy_del (EV_A_ w); 3405 infy_del (EV_A_ w);
2326#endif 3406#endif
3407
3408 if (ev_is_active (&w->timer))
3409 {
3410 ev_ref (EV_A);
2327 ev_timer_stop (EV_A_ &w->timer); 3411 ev_timer_stop (EV_A_ &w->timer);
3412 }
2328 3413
2329 ev_stop (EV_A_ (W)w); 3414 ev_stop (EV_A_ (W)w);
3415
3416 EV_FREQUENT_CHECK;
2330} 3417}
2331#endif 3418#endif
2332 3419
2333#if EV_IDLE_ENABLE 3420#if EV_IDLE_ENABLE
2334void 3421void
… …
2336{ 3423{
2337 if (expect_false (ev_is_active (w))) 3424 if (expect_false (ev_is_active (w)))
2338 return; 3425 return;
2339 3426
2340 pri_adjust (EV_A_ (W)w); 3427 pri_adjust (EV_A_ (W)w);
3428
3429 EV_FREQUENT_CHECK;
2341 3430
2342 { 3431 {
2343 int active = ++idlecnt [ABSPRI (w)]; 3432 int active = ++idlecnt [ABSPRI (w)];
2344 3433
2345 ++idleall; 3434 ++idleall;
2346 ev_start (EV_A_ (W)w, active); 3435 ev_start (EV_A_ (W)w, active);
2347 3436
2348 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3437 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2349 idles [ABSPRI (w)][active - 1] = w; 3438 idles [ABSPRI (w)][active - 1] = w;
2350 } 3439 }
3440
3441 EV_FREQUENT_CHECK;
2351} 3442}
2352 3443
2353void 3444void
2354ev_idle_stop (EV_P_ ev_idle *w) 3445ev_idle_stop (EV_P_ ev_idle *w)
2355{ 3446{
2356 clear_pending (EV_A_ (W)w); 3447 clear_pending (EV_A_ (W)w);
2357 if (expect_false (!ev_is_active (w))) 3448 if (expect_false (!ev_is_active (w)))
2358 return; 3449 return;
2359 3450
3451 EV_FREQUENT_CHECK;
3452
2360 { 3453 {
2361 int active = ((W)w)->active; 3454 int active = ev_active (w);
2362 3455
2363 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3456 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2364 ((W)idles [ABSPRI (w)][active - 1])->active = active; 3457 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2365 3458
2366 ev_stop (EV_A_ (W)w); 3459 ev_stop (EV_A_ (W)w);
2367 --idleall; 3460 --idleall;
2368 } 3461 }
2369}
2370#endif
2371 3462
3463 EV_FREQUENT_CHECK;
3464}
3465#endif
3466
3467#if EV_PREPARE_ENABLE
2372void 3468void
2373ev_prepare_start (EV_P_ ev_prepare *w) 3469ev_prepare_start (EV_P_ ev_prepare *w)
2374{ 3470{
2375 if (expect_false (ev_is_active (w))) 3471 if (expect_false (ev_is_active (w)))
2376 return; 3472 return;
3473
3474 EV_FREQUENT_CHECK;
2377 3475
2378 ev_start (EV_A_ (W)w, ++preparecnt); 3476 ev_start (EV_A_ (W)w, ++preparecnt);
2379 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3477 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2380 prepares [preparecnt - 1] = w; 3478 prepares [preparecnt - 1] = w;
3479
3480 EV_FREQUENT_CHECK;
2381} 3481}
2382 3482
2383void 3483void
2384ev_prepare_stop (EV_P_ ev_prepare *w) 3484ev_prepare_stop (EV_P_ ev_prepare *w)
2385{ 3485{
2386 clear_pending (EV_A_ (W)w); 3486 clear_pending (EV_A_ (W)w);
2387 if (expect_false (!ev_is_active (w))) 3487 if (expect_false (!ev_is_active (w)))
2388 return; 3488 return;
2389 3489
3490 EV_FREQUENT_CHECK;
3491
2390 { 3492 {
2391 int active = ((W)w)->active; 3493 int active = ev_active (w);
3494
2392 prepares [active - 1] = prepares [--preparecnt]; 3495 prepares [active - 1] = prepares [--preparecnt];
2393 ((W)prepares [active - 1])->active = active; 3496 ev_active (prepares [active - 1]) = active;
2394 } 3497 }
2395 3498
2396 ev_stop (EV_A_ (W)w); 3499 ev_stop (EV_A_ (W)w);
2397}
2398 3500
3501 EV_FREQUENT_CHECK;
3502}
3503#endif
3504
3505#if EV_CHECK_ENABLE
2399void 3506void
2400ev_check_start (EV_P_ ev_check *w) 3507ev_check_start (EV_P_ ev_check *w)
2401{ 3508{
2402 if (expect_false (ev_is_active (w))) 3509 if (expect_false (ev_is_active (w)))
2403 return; 3510 return;
3511
3512 EV_FREQUENT_CHECK;
2404 3513
2405 ev_start (EV_A_ (W)w, ++checkcnt); 3514 ev_start (EV_A_ (W)w, ++checkcnt);
2406 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3515 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2407 checks [checkcnt - 1] = w; 3516 checks [checkcnt - 1] = w;
3517
3518 EV_FREQUENT_CHECK;
2408} 3519}
2409 3520
2410void 3521void
2411ev_check_stop (EV_P_ ev_check *w) 3522ev_check_stop (EV_P_ ev_check *w)
2412{ 3523{
2413 clear_pending (EV_A_ (W)w); 3524 clear_pending (EV_A_ (W)w);
2414 if (expect_false (!ev_is_active (w))) 3525 if (expect_false (!ev_is_active (w)))
2415 return; 3526 return;
2416 3527
3528 EV_FREQUENT_CHECK;
3529
2417 { 3530 {
2418 int active = ((W)w)->active; 3531 int active = ev_active (w);
3532
2419 checks [active - 1] = checks [--checkcnt]; 3533 checks [active - 1] = checks [--checkcnt];
2420 ((W)checks [active - 1])->active = active; 3534 ev_active (checks [active - 1]) = active;
2421 } 3535 }
2422 3536
2423 ev_stop (EV_A_ (W)w); 3537 ev_stop (EV_A_ (W)w);
3538
3539 EV_FREQUENT_CHECK;
2424} 3540}
3541#endif
2425 3542
2426#if EV_EMBED_ENABLE 3543#if EV_EMBED_ENABLE
2427void noinline 3544void noinline
2428ev_embed_sweep (EV_P_ ev_embed *w) 3545ev_embed_sweep (EV_P_ ev_embed *w)
2429{ 3546{
2430 ev_loop (w->other, EVLOOP_NONBLOCK); 3547 ev_run (w->other, EVRUN_NOWAIT);
2431} 3548}
2432 3549
2433static void 3550static void
2434embed_io_cb (EV_P_ ev_io *io, int revents) 3551embed_io_cb (EV_P_ ev_io *io, int revents)
2435{ 3552{
2436 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3553 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2437 3554
2438 if (ev_cb (w)) 3555 if (ev_cb (w))
2439 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3556 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2440 else 3557 else
2441 ev_loop (w->other, EVLOOP_NONBLOCK); 3558 ev_run (w->other, EVRUN_NOWAIT);
2442} 3559}
2443 3560
2444static void 3561static void
2445embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3562embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2446{ 3563{
2447 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3564 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2448 3565
2449 { 3566 {
2450 struct ev_loop *loop = w->other; 3567 EV_P = w->other;
2451 3568
2452 while (fdchangecnt) 3569 while (fdchangecnt)
2453 { 3570 {
2454 fd_reify (EV_A); 3571 fd_reify (EV_A);
2455 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3572 ev_run (EV_A_ EVRUN_NOWAIT);
2456 } 3573 }
2457 } 3574 }
3575}
3576
3577static void
3578embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3579{
3580 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3581
3582 ev_embed_stop (EV_A_ w);
3583
3584 {
3585 EV_P = w->other;
3586
3587 ev_loop_fork (EV_A);
3588 ev_run (EV_A_ EVRUN_NOWAIT);
3589 }
3590
3591 ev_embed_start (EV_A_ w);
2458} 3592}
2459 3593
2460#if 0 3594#if 0
2461static void 3595static void
2462embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3596embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2470{ 3604{
2471 if (expect_false (ev_is_active (w))) 3605 if (expect_false (ev_is_active (w)))
2472 return; 3606 return;
2473 3607
2474 { 3608 {
2475 struct ev_loop *loop = w->other; 3609 EV_P = w->other;
2476 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3610 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2477 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3611 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2478 } 3612 }
3613
3614 EV_FREQUENT_CHECK;
2479 3615
2480 ev_set_priority (&w->io, ev_priority (w)); 3616 ev_set_priority (&w->io, ev_priority (w));
2481 ev_io_start (EV_A_ &w->io); 3617 ev_io_start (EV_A_ &w->io);
2482 3618
2483 ev_prepare_init (&w->prepare, embed_prepare_cb); 3619 ev_prepare_init (&w->prepare, embed_prepare_cb);
2484 ev_set_priority (&w->prepare, EV_MINPRI); 3620 ev_set_priority (&w->prepare, EV_MINPRI);
2485 ev_prepare_start (EV_A_ &w->prepare); 3621 ev_prepare_start (EV_A_ &w->prepare);
2486 3622
3623 ev_fork_init (&w->fork, embed_fork_cb);
3624 ev_fork_start (EV_A_ &w->fork);
3625
2487 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3626 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2488 3627
2489 ev_start (EV_A_ (W)w, 1); 3628 ev_start (EV_A_ (W)w, 1);
3629
3630 EV_FREQUENT_CHECK;
2490} 3631}
2491 3632
2492void 3633void
2493ev_embed_stop (EV_P_ ev_embed *w) 3634ev_embed_stop (EV_P_ ev_embed *w)
2494{ 3635{
2495 clear_pending (EV_A_ (W)w); 3636 clear_pending (EV_A_ (W)w);
2496 if (expect_false (!ev_is_active (w))) 3637 if (expect_false (!ev_is_active (w)))
2497 return; 3638 return;
2498 3639
3640 EV_FREQUENT_CHECK;
3641
2499 ev_io_stop (EV_A_ &w->io); 3642 ev_io_stop (EV_A_ &w->io);
2500 ev_prepare_stop (EV_A_ &w->prepare); 3643 ev_prepare_stop (EV_A_ &w->prepare);
3644 ev_fork_stop (EV_A_ &w->fork);
2501 3645
2502 ev_stop (EV_A_ (W)w); 3646 ev_stop (EV_A_ (W)w);
3647
3648 EV_FREQUENT_CHECK;
2503} 3649}
2504#endif 3650#endif
2505 3651
2506#if EV_FORK_ENABLE 3652#if EV_FORK_ENABLE
2507void 3653void
2508ev_fork_start (EV_P_ ev_fork *w) 3654ev_fork_start (EV_P_ ev_fork *w)
2509{ 3655{
2510 if (expect_false (ev_is_active (w))) 3656 if (expect_false (ev_is_active (w)))
2511 return; 3657 return;
3658
3659 EV_FREQUENT_CHECK;
2512 3660
2513 ev_start (EV_A_ (W)w, ++forkcnt); 3661 ev_start (EV_A_ (W)w, ++forkcnt);
2514 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3662 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2515 forks [forkcnt - 1] = w; 3663 forks [forkcnt - 1] = w;
3664
3665 EV_FREQUENT_CHECK;
2516} 3666}
2517 3667
2518void 3668void
2519ev_fork_stop (EV_P_ ev_fork *w) 3669ev_fork_stop (EV_P_ ev_fork *w)
2520{ 3670{
2521 clear_pending (EV_A_ (W)w); 3671 clear_pending (EV_A_ (W)w);
2522 if (expect_false (!ev_is_active (w))) 3672 if (expect_false (!ev_is_active (w)))
2523 return; 3673 return;
2524 3674
3675 EV_FREQUENT_CHECK;
3676
2525 { 3677 {
2526 int active = ((W)w)->active; 3678 int active = ev_active (w);
3679
2527 forks [active - 1] = forks [--forkcnt]; 3680 forks [active - 1] = forks [--forkcnt];
2528 ((W)forks [active - 1])->active = active; 3681 ev_active (forks [active - 1]) = active;
2529 } 3682 }
2530 3683
2531 ev_stop (EV_A_ (W)w); 3684 ev_stop (EV_A_ (W)w);
2532}
2533#endif
2534 3685
3686 EV_FREQUENT_CHECK;
3687}
3688#endif
3689
2535#if EV_ASYNC_ENABLE 3690#if EV_CLEANUP_ENABLE
2536void 3691void
2537ev_async_start (EV_P_ ev_async *w) 3692ev_cleanup_start (EV_P_ ev_cleanup *w)
2538{ 3693{
2539 if (expect_false (ev_is_active (w))) 3694 if (expect_false (ev_is_active (w)))
2540 return; 3695 return;
2541 3696
3697 EV_FREQUENT_CHECK;
3698
3699 ev_start (EV_A_ (W)w, ++cleanupcnt);
3700 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3701 cleanups [cleanupcnt - 1] = w;
3702
3703 /* cleanup watchers should never keep a refcount on the loop */
3704 ev_unref (EV_A);
3705 EV_FREQUENT_CHECK;
3706}
3707
3708void
3709ev_cleanup_stop (EV_P_ ev_cleanup *w)
3710{
3711 clear_pending (EV_A_ (W)w);
3712 if (expect_false (!ev_is_active (w)))
3713 return;
3714
3715 EV_FREQUENT_CHECK;
3716 ev_ref (EV_A);
3717
3718 {
3719 int active = ev_active (w);
3720
3721 cleanups [active - 1] = cleanups [--cleanupcnt];
3722 ev_active (cleanups [active - 1]) = active;
3723 }
3724
3725 ev_stop (EV_A_ (W)w);
3726
3727 EV_FREQUENT_CHECK;
3728}
3729#endif
3730
3731#if EV_ASYNC_ENABLE
3732void
3733ev_async_start (EV_P_ ev_async *w)
3734{
3735 if (expect_false (ev_is_active (w)))
3736 return;
3737
3738 w->sent = 0;
3739
2542 evpipe_init (EV_A); 3740 evpipe_init (EV_A);
3741
3742 EV_FREQUENT_CHECK;
2543 3743
2544 ev_start (EV_A_ (W)w, ++asynccnt); 3744 ev_start (EV_A_ (W)w, ++asynccnt);
2545 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3745 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2546 asyncs [asynccnt - 1] = w; 3746 asyncs [asynccnt - 1] = w;
3747
3748 EV_FREQUENT_CHECK;
2547} 3749}
2548 3750
2549void 3751void
2550ev_async_stop (EV_P_ ev_async *w) 3752ev_async_stop (EV_P_ ev_async *w)
2551{ 3753{
2552 clear_pending (EV_A_ (W)w); 3754 clear_pending (EV_A_ (W)w);
2553 if (expect_false (!ev_is_active (w))) 3755 if (expect_false (!ev_is_active (w)))
2554 return; 3756 return;
2555 3757
3758 EV_FREQUENT_CHECK;
3759
2556 { 3760 {
2557 int active = ((W)w)->active; 3761 int active = ev_active (w);
3762
2558 asyncs [active - 1] = asyncs [--asynccnt]; 3763 asyncs [active - 1] = asyncs [--asynccnt];
2559 ((W)asyncs [active - 1])->active = active; 3764 ev_active (asyncs [active - 1]) = active;
2560 } 3765 }
2561 3766
2562 ev_stop (EV_A_ (W)w); 3767 ev_stop (EV_A_ (W)w);
3768
3769 EV_FREQUENT_CHECK;
2563} 3770}
2564 3771
2565void 3772void
2566ev_async_send (EV_P_ ev_async *w) 3773ev_async_send (EV_P_ ev_async *w)
2567{ 3774{
2568 w->sent = 1; 3775 w->sent = 1;
2569 evpipe_write (EV_A_ &gotasync); 3776 evpipe_write (EV_A_ &async_pending);
2570} 3777}
2571#endif 3778#endif
2572 3779
2573/*****************************************************************************/ 3780/*****************************************************************************/
2574 3781
… …
2584once_cb (EV_P_ struct ev_once *once, int revents) 3791once_cb (EV_P_ struct ev_once *once, int revents)
2585{ 3792{
2586 void (*cb)(int revents, void *arg) = once->cb; 3793 void (*cb)(int revents, void *arg) = once->cb;
2587 void *arg = once->arg; 3794 void *arg = once->arg;
2588 3795
2589 ev_io_stop (EV_A_ &once->io); 3796 ev_io_stop (EV_A_ &once->io);
2590 ev_timer_stop (EV_A_ &once->to); 3797 ev_timer_stop (EV_A_ &once->to);
2591 ev_free (once); 3798 ev_free (once);
2592 3799
2593 cb (revents, arg); 3800 cb (revents, arg);
2594} 3801}
2595 3802
2596static void 3803static void
2597once_cb_io (EV_P_ ev_io *w, int revents) 3804once_cb_io (EV_P_ ev_io *w, int revents)
2598{ 3805{
2599 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3806 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3807
3808 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2600} 3809}
2601 3810
2602static void 3811static void
2603once_cb_to (EV_P_ ev_timer *w, int revents) 3812once_cb_to (EV_P_ ev_timer *w, int revents)
2604{ 3813{
2605 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3814 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3815
3816 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2606} 3817}
2607 3818
2608void 3819void
2609ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3820ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2610{ 3821{
2611 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3822 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2612 3823
2613 if (expect_false (!once)) 3824 if (expect_false (!once))
2614 { 3825 {
2615 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3826 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2616 return; 3827 return;
2617 } 3828 }
2618 3829
2619 once->cb = cb; 3830 once->cb = cb;
2620 once->arg = arg; 3831 once->arg = arg;
… …
2632 ev_timer_set (&once->to, timeout, 0.); 3843 ev_timer_set (&once->to, timeout, 0.);
2633 ev_timer_start (EV_A_ &once->to); 3844 ev_timer_start (EV_A_ &once->to);
2634 } 3845 }
2635} 3846}
2636 3847
3848/*****************************************************************************/
3849
3850#if EV_WALK_ENABLE
3851void
3852ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3853{
3854 int i, j;
3855 ev_watcher_list *wl, *wn;
3856
3857 if (types & (EV_IO | EV_EMBED))
3858 for (i = 0; i < anfdmax; ++i)
3859 for (wl = anfds [i].head; wl; )
3860 {
3861 wn = wl->next;
3862
3863#if EV_EMBED_ENABLE
3864 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3865 {
3866 if (types & EV_EMBED)
3867 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3868 }
3869 else
3870#endif
3871#if EV_USE_INOTIFY
3872 if (ev_cb ((ev_io *)wl) == infy_cb)
3873 ;
3874 else
3875#endif
3876 if ((ev_io *)wl != &pipe_w)
3877 if (types & EV_IO)
3878 cb (EV_A_ EV_IO, wl);
3879
3880 wl = wn;
3881 }
3882
3883 if (types & (EV_TIMER | EV_STAT))
3884 for (i = timercnt + HEAP0; i-- > HEAP0; )
3885#if EV_STAT_ENABLE
3886 /*TODO: timer is not always active*/
3887 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3888 {
3889 if (types & EV_STAT)
3890 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3891 }
3892 else
3893#endif
3894 if (types & EV_TIMER)
3895 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3896
3897#if EV_PERIODIC_ENABLE
3898 if (types & EV_PERIODIC)
3899 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3900 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3901#endif
3902
3903#if EV_IDLE_ENABLE
3904 if (types & EV_IDLE)
3905 for (j = NUMPRI; i--; )
3906 for (i = idlecnt [j]; i--; )
3907 cb (EV_A_ EV_IDLE, idles [j][i]);
3908#endif
3909
3910#if EV_FORK_ENABLE
3911 if (types & EV_FORK)
3912 for (i = forkcnt; i--; )
3913 if (ev_cb (forks [i]) != embed_fork_cb)
3914 cb (EV_A_ EV_FORK, forks [i]);
3915#endif
3916
3917#if EV_ASYNC_ENABLE
3918 if (types & EV_ASYNC)
3919 for (i = asynccnt; i--; )
3920 cb (EV_A_ EV_ASYNC, asyncs [i]);
3921#endif
3922
3923#if EV_PREPARE_ENABLE
3924 if (types & EV_PREPARE)
3925 for (i = preparecnt; i--; )
3926# if EV_EMBED_ENABLE
3927 if (ev_cb (prepares [i]) != embed_prepare_cb)
3928# endif
3929 cb (EV_A_ EV_PREPARE, prepares [i]);
3930#endif
3931
3932#if EV_CHECK_ENABLE
3933 if (types & EV_CHECK)
3934 for (i = checkcnt; i--; )
3935 cb (EV_A_ EV_CHECK, checks [i]);
3936#endif
3937
3938#if EV_SIGNAL_ENABLE
3939 if (types & EV_SIGNAL)
3940 for (i = 0; i < EV_NSIG - 1; ++i)
3941 for (wl = signals [i].head; wl; )
3942 {
3943 wn = wl->next;
3944 cb (EV_A_ EV_SIGNAL, wl);
3945 wl = wn;
3946 }
3947#endif
3948
3949#if EV_CHILD_ENABLE
3950 if (types & EV_CHILD)
3951 for (i = (EV_PID_HASHSIZE); i--; )
3952 for (wl = childs [i]; wl; )
3953 {
3954 wn = wl->next;
3955 cb (EV_A_ EV_CHILD, wl);
3956 wl = wn;
3957 }
3958#endif
3959/* EV_STAT 0x00001000 /* stat data changed */
3960/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3961}
3962#endif
3963
2637#if EV_MULTIPLICITY 3964#if EV_MULTIPLICITY
2638 #include "ev_wrap.h" 3965 #include "ev_wrap.h"
2639#endif 3966#endif
2640 3967
2641#ifdef __cplusplus 3968EV_CPP(})
2642}
2643#endif
2644 3969

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