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Comparing libev/ev.c (file contents):
Revision 1.279 by root, Fri Feb 6 20:17:43 2009 UTC vs.
Revision 1.373 by root, Sun Feb 20 02:56:23 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 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
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL)
65# define EV_USE_CLOCK_SYSCALL 0
62# endif 66# endif
63 67
64# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
65# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
66# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
… …
75# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
77# endif 81# endif
78# endif 82# endif
79 83
84# if HAVE_NANOSLEEP
80# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
81# if HAVE_NANOSLEEP
82# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
83# else 88# else
89# undef EV_USE_NANOSLEEP
84# 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
85# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
86# endif 100# endif
87 101
102# if HAVE_POLL && HAVE_POLL_H
88# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
89# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
90# define EV_USE_SELECT 1
91# else
92# define EV_USE_SELECT 0
93# endif 105# endif
94# endif
95
96# ifndef EV_USE_POLL
97# if HAVE_POLL && HAVE_POLL_H
98# define EV_USE_POLL 1
99# else 106# else
107# undef EV_USE_POLL
100# define EV_USE_POLL 0 108# define EV_USE_POLL 0
101# endif
102# endif 109# endif
103 110
104# ifndef EV_USE_EPOLL
105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
106# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
107# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
108# define EV_USE_EPOLL 0
109# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
110# endif 118# endif
111 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
112# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
113# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
114# define EV_USE_KQUEUE 1
115# else
116# define EV_USE_KQUEUE 0
117# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
118# endif 127# endif
119 128
120# ifndef EV_USE_PORT
121# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
122# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
123# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
124# define EV_USE_PORT 0
125# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
126# endif 136# endif
127 137
128# ifndef EV_USE_INOTIFY
129# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
130# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
131# else
132# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
133# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
134# endif 145# endif
135 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
136# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
137# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
138# define EV_USE_EVENTFD 1
139# else
140# define EV_USE_EVENTFD 0
141# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
154# endif
155
156# if HAVE_EVENTFD
157# ifndef EV_USE_EVENTFD
158# define EV_USE_EVENTFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
142# endif 163# endif
143 164
144#endif 165#endif
145 166
146#include <math.h>
147#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
148#include <fcntl.h> 169#include <fcntl.h>
149#include <stddef.h> 170#include <stddef.h>
150 171
151#include <stdio.h> 172#include <stdio.h>
152 173
153#include <assert.h> 174#include <assert.h>
154#include <errno.h> 175#include <errno.h>
155#include <sys/types.h> 176#include <sys/types.h>
156#include <time.h> 177#include <time.h>
178#include <limits.h>
157 179
158#include <signal.h> 180#include <signal.h>
159 181
160#ifdef EV_H 182#ifdef EV_H
161# include EV_H 183# include EV_H
162#else 184#else
163# include "ev.h" 185# include "ev.h"
164#endif 186#endif
187
188EV_CPP(extern "C" {)
165 189
166#ifndef _WIN32 190#ifndef _WIN32
167# include <sys/time.h> 191# include <sys/time.h>
168# include <sys/wait.h> 192# include <sys/wait.h>
169# include <unistd.h> 193# include <unistd.h>
… …
172# define WIN32_LEAN_AND_MEAN 196# define WIN32_LEAN_AND_MEAN
173# include <windows.h> 197# include <windows.h>
174# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
176# endif 200# endif
201# undef EV_AVOID_STDIO
177#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
178 211
179/* this block tries to deduce configuration from header-defined symbols and defaults */ 212/* this block tries to deduce configuration from header-defined symbols and defaults */
213
214/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG)
216/* use what's provided */
217#elif defined (NSIG)
218# define EV_NSIG (NSIG)
219#elif defined(_NSIG)
220# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX)
222# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX)
224# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX)
226# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG)
228# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG)
230# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE)
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig)
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else
236# error "unable to find value for NSIG, please report"
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif
241
242#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0
244#endif
180 245
181#ifndef EV_USE_CLOCK_SYSCALL 246#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 247# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1 248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 249# else
185# define EV_USE_CLOCK_SYSCALL 0 250# define EV_USE_CLOCK_SYSCALL 0
186# endif 251# endif
187#endif 252#endif
188 253
189#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 256# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 257# else
193# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
194# endif 259# endif
195#endif 260#endif
196 261
… …
198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 264#endif
200 265
201#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 267# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 268# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 269# else
205# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
206# endif 271# endif
207#endif 272#endif
208 273
209#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 276#endif
212 277
213#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
214# ifdef _WIN32 279# ifdef _WIN32
215# define EV_USE_POLL 0 280# define EV_USE_POLL 0
216# else 281# else
217# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 283# endif
219#endif 284#endif
220 285
221#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 289# else
225# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
226# endif 291# endif
227#endif 292#endif
228 293
… …
234# define EV_USE_PORT 0 299# define EV_USE_PORT 0
235#endif 300#endif
236 301
237#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 305# else
241# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
242# endif 307# endif
243#endif 308#endif
244 309
245#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
247# define EV_PID_HASHSIZE 1
248# else
249# define EV_PID_HASHSIZE 16
250# endif
251#endif 312#endif
252 313
253#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
255# define EV_INOTIFY_HASHSIZE 1
256# else
257# define EV_INOTIFY_HASHSIZE 16
258# endif
259#endif 316#endif
260 317
261#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 321# else
265# define EV_USE_EVENTFD 0 322# define EV_USE_EVENTFD 0
323# endif
324#endif
325
326#ifndef EV_USE_SIGNALFD
327# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
328# define EV_USE_SIGNALFD EV_FEATURE_OS
329# else
330# define EV_USE_SIGNALFD 0
266# endif 331# endif
267#endif 332#endif
268 333
269#if 0 /* debugging */ 334#if 0 /* debugging */
270# define EV_VERIFY 3 335# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 336# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 337# define EV_HEAP_CACHE_AT 1
273#endif 338#endif
274 339
275#ifndef EV_VERIFY 340#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 342#endif
278 343
279#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 346#endif
282 347
283#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL 349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif
351
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h>
356# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1
360# else
361# undef EV_USE_CLOCK_SYSCALL
362# define EV_USE_CLOCK_SYSCALL 0
363# endif
285#endif 364#endif
286 365
287/* 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
288 373
289#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
290# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
291# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
292#endif 377#endif
… …
300# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
301# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
302#endif 387#endif
303 388
304#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
305# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
306# include <sys/select.h> 392# include <sys/select.h>
307# endif 393# endif
308#endif 394#endif
309 395
310#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h> 397# include <sys/statfs.h>
313# include <sys/inotify.h> 398# include <sys/inotify.h>
314/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
315# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
… …
320 405
321#if EV_SELECT_IS_WINSOCKET 406#if EV_SELECT_IS_WINSOCKET
322# include <winsock.h> 407# include <winsock.h>
323#endif 408#endif
324 409
325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
331# define EV_USE_MONOTONIC 1
332#endif
333
334#if EV_USE_EVENTFD 410#if EV_USE_EVENTFD
335/* 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 */
336# include <stdint.h> 412# include <stdint.h>
337# ifdef __cplusplus 413# ifndef EFD_NONBLOCK
338extern "C" { 414# define EFD_NONBLOCK O_NONBLOCK
339# endif 415# endif
340int eventfd (unsigned int initval, int flags); 416# ifndef EFD_CLOEXEC
341# ifdef __cplusplus 417# ifdef O_CLOEXEC
342} 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
343# 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};
344#endif 446#endif
345 447
346/**/ 448/**/
347 449
348#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 452#else
351# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
352#endif 454#endif
353 455
354/* 456/*
355 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
356 * It is added to ev_rt_now when scheduling periodics
357 * to ensure progress, time-wise, even when rounding
358 * errors are against us.
359 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
360 * Better solutions welcome.
361 */ 459 */
362#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 */
363 462
364#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) */
365#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) */
366/*#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)
367 468
368#if __GNUC__ >= 4 469#if __GNUC__ >= 4
369# define expect(expr,value) __builtin_expect ((expr),(value)) 470# define expect(expr,value) __builtin_expect ((expr),(value))
370# define noinline __attribute__ ((noinline)) 471# define noinline __attribute__ ((noinline))
371#else 472#else
… …
378 479
379#define expect_false(expr) expect ((expr) != 0, 0) 480#define expect_false(expr) expect ((expr) != 0, 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 481#define expect_true(expr) expect ((expr) != 0, 1)
381#define inline_size static inline 482#define inline_size static inline
382 483
383#if EV_MINIMAL 484#if EV_FEATURE_CODE
485# define inline_speed static inline
486#else
384# 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)
385#else 494#else
386# define inline_speed static inline
387#endif
388
389#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
390#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 495# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
496#endif
391 497
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 498#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 499#define EMPTY2(a,b) /* used to suppress some warnings */
394 500
395typedef ev_watcher *W; 501typedef ev_watcher *W;
… …
399#define ev_active(w) ((W)(w))->active 505#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 506#define ev_at(w) ((WT)(w))->at
401 507
402#if EV_USE_REALTIME 508#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 509/* sig_atomic_t is used to avoid per-thread variables or locking but still */
404/* giving it a reasonably high chance of working on typical architetcures */ 510/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 511static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 512#endif
407 513
408#if EV_USE_MONOTONIC 514#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 515static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 516#endif
411 517
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)
526#endif
527
412#ifdef _WIN32 528#ifdef _WIN32
413# include "ev_win32.c" 529# include "ev_win32.c"
414#endif 530#endif
415 531
416/*****************************************************************************/ 532/*****************************************************************************/
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
417 631
418static void (*syserr_cb)(const char *msg); 632static void (*syserr_cb)(const char *msg);
419 633
420void 634void
421ev_set_syserr_cb (void (*cb)(const char *msg)) 635ev_set_syserr_cb (void (*cb)(const char *msg))
… …
431 645
432 if (syserr_cb) 646 if (syserr_cb)
433 syserr_cb (msg); 647 syserr_cb (msg);
434 else 648 else
435 { 649 {
650#if EV_AVOID_STDIO
651 ev_printerr (msg);
652 ev_printerr (": ");
653 ev_printerr (strerror (errno));
654 ev_printerr ("\n");
655#else
436 perror (msg); 656 perror (msg);
657#endif
437 abort (); 658 abort ();
438 } 659 }
439} 660}
440 661
441static void * 662static void *
442ev_realloc_emul (void *ptr, long size) 663ev_realloc_emul (void *ptr, long size)
443{ 664{
665#if __GLIBC__
666 return realloc (ptr, size);
667#else
444 /* some systems, notably openbsd and darwin, fail to properly 668 /* some systems, notably openbsd and darwin, fail to properly
445 * 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
446 * the single unix specification, so work around them here. 670 * the single unix specification, so work around them here.
447 */ 671 */
448 672
449 if (size) 673 if (size)
450 return realloc (ptr, size); 674 return realloc (ptr, size);
451 675
452 free (ptr); 676 free (ptr);
453 return 0; 677 return 0;
678#endif
454} 679}
455 680
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 681static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
457 682
458void 683void
… …
466{ 691{
467 ptr = alloc (ptr, size); 692 ptr = alloc (ptr, size);
468 693
469 if (!ptr && size) 694 if (!ptr && size)
470 { 695 {
696#if EV_AVOID_STDIO
697 ev_printerr ("(libev) memory allocation failed, aborting.\n");
698#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 699 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
700#endif
472 abort (); 701 abort ();
473 } 702 }
474 703
475 return ptr; 704 return ptr;
476} 705}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 707#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 708#define ev_free(ptr) ev_realloc ((ptr), 0)
480 709
481/*****************************************************************************/ 710/*****************************************************************************/
482 711
712/* set in reify when reification needed */
713#define EV_ANFD_REIFY 1
714
715/* file descriptor info structure */
483typedef struct 716typedef struct
484{ 717{
485 WL head; 718 WL head;
486 unsigned char events; 719 unsigned char events; /* the events watched for */
487 unsigned char reify; 720 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
488 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 721 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489 unsigned char unused; 722 unsigned char unused;
490#if EV_USE_EPOLL 723#if EV_USE_EPOLL
491 unsigned int egen; /* generation counter to counter epoll bugs */ 724 unsigned int egen; /* generation counter to counter epoll bugs */
492#endif 725#endif
493#if EV_SELECT_IS_WINSOCKET 726#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
494 SOCKET handle; 727 SOCKET handle;
495#endif 728#endif
729#if EV_USE_IOCP
730 OVERLAPPED or, ow;
731#endif
496} ANFD; 732} ANFD;
497 733
734/* stores the pending event set for a given watcher */
498typedef struct 735typedef struct
499{ 736{
500 W w; 737 W w;
501 int events; 738 int events; /* the pending event set for the given watcher */
502} ANPENDING; 739} ANPENDING;
503 740
504#if EV_USE_INOTIFY 741#if EV_USE_INOTIFY
505/* hash table entry per inotify-id */ 742/* hash table entry per inotify-id */
506typedef struct 743typedef struct
… …
509} ANFS; 746} ANFS;
510#endif 747#endif
511 748
512/* Heap Entry */ 749/* Heap Entry */
513#if EV_HEAP_CACHE_AT 750#if EV_HEAP_CACHE_AT
751 /* a heap element */
514 typedef struct { 752 typedef struct {
515 ev_tstamp at; 753 ev_tstamp at;
516 WT w; 754 WT w;
517 } ANHE; 755 } ANHE;
518 756
519 #define ANHE_w(he) (he).w /* access watcher, read-write */ 757 #define ANHE_w(he) (he).w /* access watcher, read-write */
520 #define ANHE_at(he) (he).at /* access cached at, read-only */ 758 #define ANHE_at(he) (he).at /* access cached at, read-only */
521 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 759 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522#else 760#else
761 /* a heap element */
523 typedef WT ANHE; 762 typedef WT ANHE;
524 763
525 #define ANHE_w(he) (he) 764 #define ANHE_w(he) (he)
526 #define ANHE_at(he) (he)->at 765 #define ANHE_at(he) (he)->at
527 #define ANHE_at_cache(he) 766 #define ANHE_at_cache(he)
… …
551 790
552 static int ev_default_loop_ptr; 791 static int ev_default_loop_ptr;
553 792
554#endif 793#endif
555 794
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
556/*****************************************************************************/ 807/*****************************************************************************/
557 808
809#ifndef EV_HAVE_EV_TIME
558ev_tstamp 810ev_tstamp
559ev_time (void) 811ev_time (void)
560{ 812{
561#if EV_USE_REALTIME 813#if EV_USE_REALTIME
562 if (expect_true (have_realtime)) 814 if (expect_true (have_realtime))
… …
569 821
570 struct timeval tv; 822 struct timeval tv;
571 gettimeofday (&tv, 0); 823 gettimeofday (&tv, 0);
572 return tv.tv_sec + tv.tv_usec * 1e-6; 824 return tv.tv_sec + tv.tv_usec * 1e-6;
573} 825}
826#endif
574 827
575ev_tstamp inline_size 828inline_size ev_tstamp
576get_clock (void) 829get_clock (void)
577{ 830{
578#if EV_USE_MONOTONIC 831#if EV_USE_MONOTONIC
579 if (expect_true (have_monotonic)) 832 if (expect_true (have_monotonic))
580 { 833 {
… …
601 if (delay > 0.) 854 if (delay > 0.)
602 { 855 {
603#if EV_USE_NANOSLEEP 856#if EV_USE_NANOSLEEP
604 struct timespec ts; 857 struct timespec ts;
605 858
606 ts.tv_sec = (time_t)delay; 859 EV_TS_SET (ts, delay);
607 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
608
609 nanosleep (&ts, 0); 860 nanosleep (&ts, 0);
610#elif defined(_WIN32) 861#elif defined(_WIN32)
611 Sleep ((unsigned long)(delay * 1e3)); 862 Sleep ((unsigned long)(delay * 1e3));
612#else 863#else
613 struct timeval tv; 864 struct timeval tv;
614 865
615 tv.tv_sec = (time_t)delay;
616 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
617
618 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 866 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 867 /* something not guaranteed by newer posix versions, but guaranteed */
620 /* by older ones */ 868 /* by older ones */
869 EV_TV_SET (tv, delay);
621 select (0, 0, 0, 0, &tv); 870 select (0, 0, 0, 0, &tv);
622#endif 871#endif
623 } 872 }
624} 873}
625 874
875inline_speed int
876ev_timeout_to_ms (ev_tstamp timeout)
877{
878 int ms = timeout * 1000. + .999999;
879
880 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
881}
882
626/*****************************************************************************/ 883/*****************************************************************************/
627 884
628#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 885#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629 886
630int inline_size 887/* find a suitable new size for the given array, */
888/* hopefully by rounding to a nice-to-malloc size */
889inline_size int
631array_nextsize (int elem, int cur, int cnt) 890array_nextsize (int elem, int cur, int cnt)
632{ 891{
633 int ncur = cur + 1; 892 int ncur = cur + 1;
634 893
635 do 894 do
… …
676 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 935 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
677 } 936 }
678#endif 937#endif
679 938
680#define array_free(stem, idx) \ 939#define array_free(stem, idx) \
681 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 940 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682 941
683/*****************************************************************************/ 942/*****************************************************************************/
943
944/* dummy callback for pending events */
945static void noinline
946pendingcb (EV_P_ ev_prepare *w, int revents)
947{
948}
684 949
685void noinline 950void noinline
686ev_feed_event (EV_P_ void *w, int revents) 951ev_feed_event (EV_P_ void *w, int revents)
687{ 952{
688 W w_ = (W)w; 953 W w_ = (W)w;
… …
697 pendings [pri][w_->pending - 1].w = w_; 962 pendings [pri][w_->pending - 1].w = w_;
698 pendings [pri][w_->pending - 1].events = revents; 963 pendings [pri][w_->pending - 1].events = revents;
699 } 964 }
700} 965}
701 966
702void inline_speed 967inline_speed void
968feed_reverse (EV_P_ W w)
969{
970 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
971 rfeeds [rfeedcnt++] = w;
972}
973
974inline_size void
975feed_reverse_done (EV_P_ int revents)
976{
977 do
978 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
979 while (rfeedcnt);
980}
981
982inline_speed void
703queue_events (EV_P_ W *events, int eventcnt, int type) 983queue_events (EV_P_ W *events, int eventcnt, int type)
704{ 984{
705 int i; 985 int i;
706 986
707 for (i = 0; i < eventcnt; ++i) 987 for (i = 0; i < eventcnt; ++i)
708 ev_feed_event (EV_A_ events [i], type); 988 ev_feed_event (EV_A_ events [i], type);
709} 989}
710 990
711/*****************************************************************************/ 991/*****************************************************************************/
712 992
713void inline_speed 993inline_speed void
714fd_event (EV_P_ int fd, int revents) 994fd_event_nocheck (EV_P_ int fd, int revents)
715{ 995{
716 ANFD *anfd = anfds + fd; 996 ANFD *anfd = anfds + fd;
717 ev_io *w; 997 ev_io *w;
718 998
719 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 999 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
723 if (ev) 1003 if (ev)
724 ev_feed_event (EV_A_ (W)w, ev); 1004 ev_feed_event (EV_A_ (W)w, ev);
725 } 1005 }
726} 1006}
727 1007
1008/* do not submit kernel events for fds that have reify set */
1009/* because that means they changed while we were polling for new events */
1010inline_speed void
1011fd_event (EV_P_ int fd, int revents)
1012{
1013 ANFD *anfd = anfds + fd;
1014
1015 if (expect_true (!anfd->reify))
1016 fd_event_nocheck (EV_A_ fd, revents);
1017}
1018
728void 1019void
729ev_feed_fd_event (EV_P_ int fd, int revents) 1020ev_feed_fd_event (EV_P_ int fd, int revents)
730{ 1021{
731 if (fd >= 0 && fd < anfdmax) 1022 if (fd >= 0 && fd < anfdmax)
732 fd_event (EV_A_ fd, revents); 1023 fd_event_nocheck (EV_A_ fd, revents);
733} 1024}
734 1025
735void inline_size 1026/* make sure the external fd watch events are in-sync */
1027/* with the kernel/libev internal state */
1028inline_size void
736fd_reify (EV_P) 1029fd_reify (EV_P)
737{ 1030{
738 int i; 1031 int i;
1032
1033#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1034 for (i = 0; i < fdchangecnt; ++i)
1035 {
1036 int fd = fdchanges [i];
1037 ANFD *anfd = anfds + fd;
1038
1039 if (anfd->reify & EV__IOFDSET)
1040 {
1041 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1042
1043 if (handle != anfd->handle)
1044 {
1045 unsigned long arg;
1046
1047 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1048
1049 /* handle changed, but fd didn't - we need to do it in two steps */
1050 backend_modify (EV_A_ fd, anfd->events, 0);
1051 anfd->events = 0;
1052 anfd->handle = handle;
1053 }
1054 }
1055 }
1056#endif
739 1057
740 for (i = 0; i < fdchangecnt; ++i) 1058 for (i = 0; i < fdchangecnt; ++i)
741 { 1059 {
742 int fd = fdchanges [i]; 1060 int fd = fdchanges [i];
743 ANFD *anfd = anfds + fd; 1061 ANFD *anfd = anfds + fd;
744 ev_io *w; 1062 ev_io *w;
745 1063
746 unsigned char events = 0; 1064 unsigned char o_events = anfd->events;
1065 unsigned char o_reify = anfd->reify;
747 1066
748 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1067 anfd->reify = 0;
749 events |= (unsigned char)w->events;
750 1068
751#if EV_SELECT_IS_WINSOCKET 1069 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
752 if (events)
753 { 1070 {
754 unsigned long arg; 1071 anfd->events = 0;
755 #ifdef EV_FD_TO_WIN32_HANDLE 1072
756 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1073 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
757 #else 1074 anfd->events |= (unsigned char)w->events;
758 anfd->handle = _get_osfhandle (fd); 1075
759 #endif 1076 if (o_events != anfd->events)
760 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1077 o_reify = EV__IOFDSET; /* actually |= */
761 } 1078 }
762#endif
763 1079
764 { 1080 if (o_reify & EV__IOFDSET)
765 unsigned char o_events = anfd->events;
766 unsigned char o_reify = anfd->reify;
767
768 anfd->reify = 0;
769 anfd->events = events;
770
771 if (o_events != events || o_reify & EV_IOFDSET)
772 backend_modify (EV_A_ fd, o_events, events); 1081 backend_modify (EV_A_ fd, o_events, anfd->events);
773 }
774 } 1082 }
775 1083
776 fdchangecnt = 0; 1084 fdchangecnt = 0;
777} 1085}
778 1086
779void inline_size 1087/* something about the given fd changed */
1088inline_size void
780fd_change (EV_P_ int fd, int flags) 1089fd_change (EV_P_ int fd, int flags)
781{ 1090{
782 unsigned char reify = anfds [fd].reify; 1091 unsigned char reify = anfds [fd].reify;
783 anfds [fd].reify |= flags; 1092 anfds [fd].reify |= flags;
784 1093
… …
788 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1097 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
789 fdchanges [fdchangecnt - 1] = fd; 1098 fdchanges [fdchangecnt - 1] = fd;
790 } 1099 }
791} 1100}
792 1101
793void inline_speed 1102/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1103inline_speed void
794fd_kill (EV_P_ int fd) 1104fd_kill (EV_P_ int fd)
795{ 1105{
796 ev_io *w; 1106 ev_io *w;
797 1107
798 while ((w = (ev_io *)anfds [fd].head)) 1108 while ((w = (ev_io *)anfds [fd].head))
… …
800 ev_io_stop (EV_A_ w); 1110 ev_io_stop (EV_A_ w);
801 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1111 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
802 } 1112 }
803} 1113}
804 1114
805int inline_size 1115/* check whether the given fd is actually valid, for error recovery */
1116inline_size int
806fd_valid (int fd) 1117fd_valid (int fd)
807{ 1118{
808#ifdef _WIN32 1119#ifdef _WIN32
809 return _get_osfhandle (fd) != -1; 1120 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
810#else 1121#else
811 return fcntl (fd, F_GETFD) != -1; 1122 return fcntl (fd, F_GETFD) != -1;
812#endif 1123#endif
813} 1124}
814 1125
… …
832 1143
833 for (fd = anfdmax; fd--; ) 1144 for (fd = anfdmax; fd--; )
834 if (anfds [fd].events) 1145 if (anfds [fd].events)
835 { 1146 {
836 fd_kill (EV_A_ fd); 1147 fd_kill (EV_A_ fd);
837 return; 1148 break;
838 } 1149 }
839} 1150}
840 1151
841/* usually called after fork if backend needs to re-arm all fds from scratch */ 1152/* usually called after fork if backend needs to re-arm all fds from scratch */
842static void noinline 1153static void noinline
… …
847 for (fd = 0; fd < anfdmax; ++fd) 1158 for (fd = 0; fd < anfdmax; ++fd)
848 if (anfds [fd].events) 1159 if (anfds [fd].events)
849 { 1160 {
850 anfds [fd].events = 0; 1161 anfds [fd].events = 0;
851 anfds [fd].emask = 0; 1162 anfds [fd].emask = 0;
852 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1163 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
853 } 1164 }
854} 1165}
855 1166
1167/* used to prepare libev internal fd's */
1168/* this is not fork-safe */
1169inline_speed void
1170fd_intern (int fd)
1171{
1172#ifdef _WIN32
1173 unsigned long arg = 1;
1174 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1175#else
1176 fcntl (fd, F_SETFD, FD_CLOEXEC);
1177 fcntl (fd, F_SETFL, O_NONBLOCK);
1178#endif
1179}
1180
856/*****************************************************************************/ 1181/*****************************************************************************/
857 1182
858/* 1183/*
859 * the heap functions want a real array index. array index 0 uis guaranteed to not 1184 * the heap functions want a real array index. array index 0 is guaranteed to not
860 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1185 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
861 * the branching factor of the d-tree. 1186 * the branching factor of the d-tree.
862 */ 1187 */
863 1188
864/* 1189/*
… …
873#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1198#define HEAP0 (DHEAP - 1) /* index of first element in heap */
874#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1199#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
875#define UPHEAP_DONE(p,k) ((p) == (k)) 1200#define UPHEAP_DONE(p,k) ((p) == (k))
876 1201
877/* away from the root */ 1202/* away from the root */
878void inline_speed 1203inline_speed void
879downheap (ANHE *heap, int N, int k) 1204downheap (ANHE *heap, int N, int k)
880{ 1205{
881 ANHE he = heap [k]; 1206 ANHE he = heap [k];
882 ANHE *E = heap + N + HEAP0; 1207 ANHE *E = heap + N + HEAP0;
883 1208
… …
923#define HEAP0 1 1248#define HEAP0 1
924#define HPARENT(k) ((k) >> 1) 1249#define HPARENT(k) ((k) >> 1)
925#define UPHEAP_DONE(p,k) (!(p)) 1250#define UPHEAP_DONE(p,k) (!(p))
926 1251
927/* away from the root */ 1252/* away from the root */
928void inline_speed 1253inline_speed void
929downheap (ANHE *heap, int N, int k) 1254downheap (ANHE *heap, int N, int k)
930{ 1255{
931 ANHE he = heap [k]; 1256 ANHE he = heap [k];
932 1257
933 for (;;) 1258 for (;;)
934 { 1259 {
935 int c = k << 1; 1260 int c = k << 1;
936 1261
937 if (c > N + HEAP0 - 1) 1262 if (c >= N + HEAP0)
938 break; 1263 break;
939 1264
940 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1265 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
941 ? 1 : 0; 1266 ? 1 : 0;
942 1267
… …
953 ev_active (ANHE_w (he)) = k; 1278 ev_active (ANHE_w (he)) = k;
954} 1279}
955#endif 1280#endif
956 1281
957/* towards the root */ 1282/* towards the root */
958void inline_speed 1283inline_speed void
959upheap (ANHE *heap, int k) 1284upheap (ANHE *heap, int k)
960{ 1285{
961 ANHE he = heap [k]; 1286 ANHE he = heap [k];
962 1287
963 for (;;) 1288 for (;;)
… …
974 1299
975 heap [k] = he; 1300 heap [k] = he;
976 ev_active (ANHE_w (he)) = k; 1301 ev_active (ANHE_w (he)) = k;
977} 1302}
978 1303
979void inline_size 1304/* move an element suitably so it is in a correct place */
1305inline_size void
980adjustheap (ANHE *heap, int N, int k) 1306adjustheap (ANHE *heap, int N, int k)
981{ 1307{
982 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1308 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
983 upheap (heap, k); 1309 upheap (heap, k);
984 else 1310 else
985 downheap (heap, N, k); 1311 downheap (heap, N, k);
986} 1312}
987 1313
988/* rebuild the heap: this function is used only once and executed rarely */ 1314/* rebuild the heap: this function is used only once and executed rarely */
989void inline_size 1315inline_size void
990reheap (ANHE *heap, int N) 1316reheap (ANHE *heap, int N)
991{ 1317{
992 int i; 1318 int i;
993 1319
994 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1320 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
997 upheap (heap, i + HEAP0); 1323 upheap (heap, i + HEAP0);
998} 1324}
999 1325
1000/*****************************************************************************/ 1326/*****************************************************************************/
1001 1327
1328/* associate signal watchers to a signal signal */
1002typedef struct 1329typedef struct
1003{ 1330{
1331 EV_ATOMIC_T pending;
1332#if EV_MULTIPLICITY
1333 EV_P;
1334#endif
1004 WL head; 1335 WL head;
1005 EV_ATOMIC_T gotsig;
1006} ANSIG; 1336} ANSIG;
1007 1337
1008static ANSIG *signals; 1338static ANSIG signals [EV_NSIG - 1];
1009static int signalmax;
1010
1011static EV_ATOMIC_T gotsig;
1012 1339
1013/*****************************************************************************/ 1340/*****************************************************************************/
1014 1341
1015void inline_speed 1342#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1016fd_intern (int fd)
1017{
1018#ifdef _WIN32
1019 unsigned long arg = 1;
1020 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1021#else
1022 fcntl (fd, F_SETFD, FD_CLOEXEC);
1023 fcntl (fd, F_SETFL, O_NONBLOCK);
1024#endif
1025}
1026 1343
1027static void noinline 1344static void noinline
1028evpipe_init (EV_P) 1345evpipe_init (EV_P)
1029{ 1346{
1030 if (!ev_is_active (&pipeev)) 1347 if (!ev_is_active (&pipe_w))
1031 { 1348 {
1032#if EV_USE_EVENTFD 1349# if EV_USE_EVENTFD
1350 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1351 if (evfd < 0 && errno == EINVAL)
1033 if ((evfd = eventfd (0, 0)) >= 0) 1352 evfd = eventfd (0, 0);
1353
1354 if (evfd >= 0)
1034 { 1355 {
1035 evpipe [0] = -1; 1356 evpipe [0] = -1;
1036 fd_intern (evfd); 1357 fd_intern (evfd); /* doing it twice doesn't hurt */
1037 ev_io_set (&pipeev, evfd, EV_READ); 1358 ev_io_set (&pipe_w, evfd, EV_READ);
1038 } 1359 }
1039 else 1360 else
1040#endif 1361# endif
1041 { 1362 {
1042 while (pipe (evpipe)) 1363 while (pipe (evpipe))
1043 ev_syserr ("(libev) error creating signal/async pipe"); 1364 ev_syserr ("(libev) error creating signal/async pipe");
1044 1365
1045 fd_intern (evpipe [0]); 1366 fd_intern (evpipe [0]);
1046 fd_intern (evpipe [1]); 1367 fd_intern (evpipe [1]);
1047 ev_io_set (&pipeev, evpipe [0], EV_READ); 1368 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1048 } 1369 }
1049 1370
1050 ev_io_start (EV_A_ &pipeev); 1371 ev_io_start (EV_A_ &pipe_w);
1051 ev_unref (EV_A); /* watcher should not keep loop alive */ 1372 ev_unref (EV_A); /* watcher should not keep loop alive */
1052 } 1373 }
1053} 1374}
1054 1375
1055void inline_size 1376inline_size void
1056evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1377evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1057{ 1378{
1058 if (!*flag) 1379 if (!*flag)
1059 { 1380 {
1060 int old_errno = errno; /* save errno because write might clobber it */ 1381 int old_errno = errno; /* save errno because write might clobber it */
1382 char dummy;
1061 1383
1062 *flag = 1; 1384 *flag = 1;
1063 1385
1064#if EV_USE_EVENTFD 1386#if EV_USE_EVENTFD
1065 if (evfd >= 0) 1387 if (evfd >= 0)
… …
1067 uint64_t counter = 1; 1389 uint64_t counter = 1;
1068 write (evfd, &counter, sizeof (uint64_t)); 1390 write (evfd, &counter, sizeof (uint64_t));
1069 } 1391 }
1070 else 1392 else
1071#endif 1393#endif
1394 /* win32 people keep sending patches that change this write() to send() */
1395 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1396 /* so when you think this write should be a send instead, please find out */
1397 /* where your send() is from - it's definitely not the microsoft send, and */
1398 /* tell me. thank you. */
1072 write (evpipe [1], &old_errno, 1); 1399 write (evpipe [1], &dummy, 1);
1073 1400
1074 errno = old_errno; 1401 errno = old_errno;
1075 } 1402 }
1076} 1403}
1077 1404
1405/* called whenever the libev signal pipe */
1406/* got some events (signal, async) */
1078static void 1407static void
1079pipecb (EV_P_ ev_io *iow, int revents) 1408pipecb (EV_P_ ev_io *iow, int revents)
1080{ 1409{
1410 int i;
1411
1081#if EV_USE_EVENTFD 1412#if EV_USE_EVENTFD
1082 if (evfd >= 0) 1413 if (evfd >= 0)
1083 { 1414 {
1084 uint64_t counter; 1415 uint64_t counter;
1085 read (evfd, &counter, sizeof (uint64_t)); 1416 read (evfd, &counter, sizeof (uint64_t));
1086 } 1417 }
1087 else 1418 else
1088#endif 1419#endif
1089 { 1420 {
1090 char dummy; 1421 char dummy;
1422 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1091 read (evpipe [0], &dummy, 1); 1423 read (evpipe [0], &dummy, 1);
1092 } 1424 }
1093 1425
1094 if (gotsig && ev_is_default_loop (EV_A)) 1426#if EV_SIGNAL_ENABLE
1095 { 1427 if (sig_pending)
1096 int signum; 1428 {
1097 gotsig = 0; 1429 sig_pending = 0;
1098 1430
1099 for (signum = signalmax; signum--; ) 1431 for (i = EV_NSIG - 1; i--; )
1100 if (signals [signum].gotsig) 1432 if (expect_false (signals [i].pending))
1101 ev_feed_signal_event (EV_A_ signum + 1); 1433 ev_feed_signal_event (EV_A_ i + 1);
1102 } 1434 }
1435#endif
1103 1436
1104#if EV_ASYNC_ENABLE 1437#if EV_ASYNC_ENABLE
1105 if (gotasync) 1438 if (async_pending)
1106 { 1439 {
1107 int i; 1440 async_pending = 0;
1108 gotasync = 0;
1109 1441
1110 for (i = asynccnt; i--; ) 1442 for (i = asynccnt; i--; )
1111 if (asyncs [i]->sent) 1443 if (asyncs [i]->sent)
1112 { 1444 {
1113 asyncs [i]->sent = 0; 1445 asyncs [i]->sent = 0;
… …
1117#endif 1449#endif
1118} 1450}
1119 1451
1120/*****************************************************************************/ 1452/*****************************************************************************/
1121 1453
1454void
1455ev_feed_signal (int signum)
1456{
1457#if EV_MULTIPLICITY
1458 EV_P = signals [signum - 1].loop;
1459
1460 if (!EV_A)
1461 return;
1462#endif
1463
1464 signals [signum - 1].pending = 1;
1465 evpipe_write (EV_A_ &sig_pending);
1466}
1467
1122static void 1468static void
1123ev_sighandler (int signum) 1469ev_sighandler (int signum)
1124{ 1470{
1125#if EV_MULTIPLICITY
1126 struct ev_loop *loop = &default_loop_struct;
1127#endif
1128
1129#if _WIN32 1471#ifdef _WIN32
1130 signal (signum, ev_sighandler); 1472 signal (signum, ev_sighandler);
1131#endif 1473#endif
1132 1474
1133 signals [signum - 1].gotsig = 1; 1475 ev_feed_signal (signum);
1134 evpipe_write (EV_A_ &gotsig);
1135} 1476}
1136 1477
1137void noinline 1478void noinline
1138ev_feed_signal_event (EV_P_ int signum) 1479ev_feed_signal_event (EV_P_ int signum)
1139{ 1480{
1140 WL w; 1481 WL w;
1141 1482
1483 if (expect_false (signum <= 0 || signum > EV_NSIG))
1484 return;
1485
1486 --signum;
1487
1142#if EV_MULTIPLICITY 1488#if EV_MULTIPLICITY
1143 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1489 /* it is permissible to try to feed a signal to the wrong loop */
1144#endif 1490 /* or, likely more useful, feeding a signal nobody is waiting for */
1145 1491
1146 --signum; 1492 if (expect_false (signals [signum].loop != EV_A))
1147
1148 if (signum < 0 || signum >= signalmax)
1149 return; 1493 return;
1494#endif
1150 1495
1151 signals [signum].gotsig = 0; 1496 signals [signum].pending = 0;
1152 1497
1153 for (w = signals [signum].head; w; w = w->next) 1498 for (w = signals [signum].head; w; w = w->next)
1154 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1499 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1155} 1500}
1156 1501
1502#if EV_USE_SIGNALFD
1503static void
1504sigfdcb (EV_P_ ev_io *iow, int revents)
1505{
1506 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1507
1508 for (;;)
1509 {
1510 ssize_t res = read (sigfd, si, sizeof (si));
1511
1512 /* not ISO-C, as res might be -1, but works with SuS */
1513 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1514 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1515
1516 if (res < (ssize_t)sizeof (si))
1517 break;
1518 }
1519}
1520#endif
1521
1522#endif
1523
1157/*****************************************************************************/ 1524/*****************************************************************************/
1158 1525
1526#if EV_CHILD_ENABLE
1159static WL childs [EV_PID_HASHSIZE]; 1527static WL childs [EV_PID_HASHSIZE];
1160
1161#ifndef _WIN32
1162 1528
1163static ev_signal childev; 1529static ev_signal childev;
1164 1530
1165#ifndef WIFCONTINUED 1531#ifndef WIFCONTINUED
1166# define WIFCONTINUED(status) 0 1532# define WIFCONTINUED(status) 0
1167#endif 1533#endif
1168 1534
1169void inline_speed 1535/* handle a single child status event */
1536inline_speed void
1170child_reap (EV_P_ int chain, int pid, int status) 1537child_reap (EV_P_ int chain, int pid, int status)
1171{ 1538{
1172 ev_child *w; 1539 ev_child *w;
1173 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1540 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1174 1541
1175 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1542 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1176 { 1543 {
1177 if ((w->pid == pid || !w->pid) 1544 if ((w->pid == pid || !w->pid)
1178 && (!traced || (w->flags & 1))) 1545 && (!traced || (w->flags & 1)))
1179 { 1546 {
1180 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1547 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1187 1554
1188#ifndef WCONTINUED 1555#ifndef WCONTINUED
1189# define WCONTINUED 0 1556# define WCONTINUED 0
1190#endif 1557#endif
1191 1558
1559/* called on sigchld etc., calls waitpid */
1192static void 1560static void
1193childcb (EV_P_ ev_signal *sw, int revents) 1561childcb (EV_P_ ev_signal *sw, int revents)
1194{ 1562{
1195 int pid, status; 1563 int pid, status;
1196 1564
… …
1204 /* make sure we are called again until all children have been reaped */ 1572 /* make sure we are called again until all children have been reaped */
1205 /* we need to do it this way so that the callback gets called before we continue */ 1573 /* we need to do it this way so that the callback gets called before we continue */
1206 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1574 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1207 1575
1208 child_reap (EV_A_ pid, pid, status); 1576 child_reap (EV_A_ pid, pid, status);
1209 if (EV_PID_HASHSIZE > 1) 1577 if ((EV_PID_HASHSIZE) > 1)
1210 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1578 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1211} 1579}
1212 1580
1213#endif 1581#endif
1214 1582
1215/*****************************************************************************/ 1583/*****************************************************************************/
1216 1584
1585#if EV_USE_IOCP
1586# include "ev_iocp.c"
1587#endif
1217#if EV_USE_PORT 1588#if EV_USE_PORT
1218# include "ev_port.c" 1589# include "ev_port.c"
1219#endif 1590#endif
1220#if EV_USE_KQUEUE 1591#if EV_USE_KQUEUE
1221# include "ev_kqueue.c" 1592# include "ev_kqueue.c"
… …
1281#ifdef __APPLE__ 1652#ifdef __APPLE__
1282 /* only select works correctly on that "unix-certified" platform */ 1653 /* only select works correctly on that "unix-certified" platform */
1283 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1654 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1284 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1655 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1285#endif 1656#endif
1657#ifdef __FreeBSD__
1658 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1659#endif
1286 1660
1287 return flags; 1661 return flags;
1288} 1662}
1289 1663
1290unsigned int 1664unsigned int
1291ev_embeddable_backends (void) 1665ev_embeddable_backends (void)
1292{ 1666{
1293 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1667 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1294 1668
1295 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1669 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1296 /* please fix it and tell me how to detect the fix */ 1670 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1297 flags &= ~EVBACKEND_EPOLL; 1671 flags &= ~EVBACKEND_EPOLL;
1298 1672
1299 return flags; 1673 return flags;
1300} 1674}
1301 1675
1302unsigned int 1676unsigned int
1303ev_backend (EV_P) 1677ev_backend (EV_P)
1304{ 1678{
1305 return backend; 1679 return backend;
1306} 1680}
1307 1681
1682#if EV_FEATURE_API
1308unsigned int 1683unsigned int
1309ev_loop_count (EV_P) 1684ev_iteration (EV_P)
1310{ 1685{
1311 return loop_count; 1686 return loop_count;
1312} 1687}
1313 1688
1689unsigned int
1690ev_depth (EV_P)
1691{
1692 return loop_depth;
1693}
1694
1314void 1695void
1315ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1696ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1316{ 1697{
1317 io_blocktime = interval; 1698 io_blocktime = interval;
1318} 1699}
… …
1321ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1702ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1322{ 1703{
1323 timeout_blocktime = interval; 1704 timeout_blocktime = interval;
1324} 1705}
1325 1706
1707void
1708ev_set_userdata (EV_P_ void *data)
1709{
1710 userdata = data;
1711}
1712
1713void *
1714ev_userdata (EV_P)
1715{
1716 return userdata;
1717}
1718
1719void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1720{
1721 invoke_cb = invoke_pending_cb;
1722}
1723
1724void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1725{
1726 release_cb = release;
1727 acquire_cb = acquire;
1728}
1729#endif
1730
1731/* initialise a loop structure, must be zero-initialised */
1326static void noinline 1732static void noinline
1327loop_init (EV_P_ unsigned int flags) 1733loop_init (EV_P_ unsigned int flags)
1328{ 1734{
1329 if (!backend) 1735 if (!backend)
1330 { 1736 {
1737 origflags = flags;
1738
1331#if EV_USE_REALTIME 1739#if EV_USE_REALTIME
1332 if (!have_realtime) 1740 if (!have_realtime)
1333 { 1741 {
1334 struct timespec ts; 1742 struct timespec ts;
1335 1743
… …
1346 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1754 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1347 have_monotonic = 1; 1755 have_monotonic = 1;
1348 } 1756 }
1349#endif 1757#endif
1350 1758
1759 /* pid check not overridable via env */
1760#ifndef _WIN32
1761 if (flags & EVFLAG_FORKCHECK)
1762 curpid = getpid ();
1763#endif
1764
1765 if (!(flags & EVFLAG_NOENV)
1766 && !enable_secure ()
1767 && getenv ("LIBEV_FLAGS"))
1768 flags = atoi (getenv ("LIBEV_FLAGS"));
1769
1351 ev_rt_now = ev_time (); 1770 ev_rt_now = ev_time ();
1352 mn_now = get_clock (); 1771 mn_now = get_clock ();
1353 now_floor = mn_now; 1772 now_floor = mn_now;
1354 rtmn_diff = ev_rt_now - mn_now; 1773 rtmn_diff = ev_rt_now - mn_now;
1774#if EV_FEATURE_API
1775 invoke_cb = ev_invoke_pending;
1776#endif
1355 1777
1356 io_blocktime = 0.; 1778 io_blocktime = 0.;
1357 timeout_blocktime = 0.; 1779 timeout_blocktime = 0.;
1358 backend = 0; 1780 backend = 0;
1359 backend_fd = -1; 1781 backend_fd = -1;
1360 gotasync = 0; 1782 sig_pending = 0;
1783#if EV_ASYNC_ENABLE
1784 async_pending = 0;
1785#endif
1361#if EV_USE_INOTIFY 1786#if EV_USE_INOTIFY
1362 fs_fd = -2; 1787 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1363#endif 1788#endif
1364 1789#if EV_USE_SIGNALFD
1365 /* pid check not overridable via env */ 1790 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1366#ifndef _WIN32
1367 if (flags & EVFLAG_FORKCHECK)
1368 curpid = getpid ();
1369#endif 1791#endif
1370 1792
1371 if (!(flags & EVFLAG_NOENV) 1793 if (!(flags & EVBACKEND_MASK))
1372 && !enable_secure ()
1373 && getenv ("LIBEV_FLAGS"))
1374 flags = atoi (getenv ("LIBEV_FLAGS"));
1375
1376 if (!(flags & 0x0000ffffU))
1377 flags |= ev_recommended_backends (); 1794 flags |= ev_recommended_backends ();
1378 1795
1796#if EV_USE_IOCP
1797 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1798#endif
1379#if EV_USE_PORT 1799#if EV_USE_PORT
1380 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1800 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1381#endif 1801#endif
1382#if EV_USE_KQUEUE 1802#if EV_USE_KQUEUE
1383 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1803 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1390#endif 1810#endif
1391#if EV_USE_SELECT 1811#if EV_USE_SELECT
1392 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1812 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1393#endif 1813#endif
1394 1814
1815 ev_prepare_init (&pending_w, pendingcb);
1816
1817#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1395 ev_init (&pipeev, pipecb); 1818 ev_init (&pipe_w, pipecb);
1396 ev_set_priority (&pipeev, EV_MAXPRI); 1819 ev_set_priority (&pipe_w, EV_MAXPRI);
1820#endif
1397 } 1821 }
1398} 1822}
1399 1823
1400static void noinline 1824/* free up a loop structure */
1825void
1401loop_destroy (EV_P) 1826ev_loop_destroy (EV_P)
1402{ 1827{
1403 int i; 1828 int i;
1404 1829
1830#if EV_MULTIPLICITY
1831 /* mimic free (0) */
1832 if (!EV_A)
1833 return;
1834#endif
1835
1836#if EV_CLEANUP_ENABLE
1837 /* queue cleanup watchers (and execute them) */
1838 if (expect_false (cleanupcnt))
1839 {
1840 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1841 EV_INVOKE_PENDING;
1842 }
1843#endif
1844
1845#if EV_CHILD_ENABLE
1846 if (ev_is_active (&childev))
1847 {
1848 ev_ref (EV_A); /* child watcher */
1849 ev_signal_stop (EV_A_ &childev);
1850 }
1851#endif
1852
1405 if (ev_is_active (&pipeev)) 1853 if (ev_is_active (&pipe_w))
1406 { 1854 {
1407 ev_ref (EV_A); /* signal watcher */ 1855 /*ev_ref (EV_A);*/
1408 ev_io_stop (EV_A_ &pipeev); 1856 /*ev_io_stop (EV_A_ &pipe_w);*/
1409 1857
1410#if EV_USE_EVENTFD 1858#if EV_USE_EVENTFD
1411 if (evfd >= 0) 1859 if (evfd >= 0)
1412 close (evfd); 1860 close (evfd);
1413#endif 1861#endif
1414 1862
1415 if (evpipe [0] >= 0) 1863 if (evpipe [0] >= 0)
1416 { 1864 {
1417 close (evpipe [0]); 1865 EV_WIN32_CLOSE_FD (evpipe [0]);
1418 close (evpipe [1]); 1866 EV_WIN32_CLOSE_FD (evpipe [1]);
1419 } 1867 }
1420 } 1868 }
1869
1870#if EV_USE_SIGNALFD
1871 if (ev_is_active (&sigfd_w))
1872 close (sigfd);
1873#endif
1421 1874
1422#if EV_USE_INOTIFY 1875#if EV_USE_INOTIFY
1423 if (fs_fd >= 0) 1876 if (fs_fd >= 0)
1424 close (fs_fd); 1877 close (fs_fd);
1425#endif 1878#endif
1426 1879
1427 if (backend_fd >= 0) 1880 if (backend_fd >= 0)
1428 close (backend_fd); 1881 close (backend_fd);
1429 1882
1883#if EV_USE_IOCP
1884 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1885#endif
1430#if EV_USE_PORT 1886#if EV_USE_PORT
1431 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1887 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1432#endif 1888#endif
1433#if EV_USE_KQUEUE 1889#if EV_USE_KQUEUE
1434 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1890 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1449#if EV_IDLE_ENABLE 1905#if EV_IDLE_ENABLE
1450 array_free (idle, [i]); 1906 array_free (idle, [i]);
1451#endif 1907#endif
1452 } 1908 }
1453 1909
1454 ev_free (anfds); anfdmax = 0; 1910 ev_free (anfds); anfds = 0; anfdmax = 0;
1455 1911
1456 /* have to use the microsoft-never-gets-it-right macro */ 1912 /* have to use the microsoft-never-gets-it-right macro */
1913 array_free (rfeed, EMPTY);
1457 array_free (fdchange, EMPTY); 1914 array_free (fdchange, EMPTY);
1458 array_free (timer, EMPTY); 1915 array_free (timer, EMPTY);
1459#if EV_PERIODIC_ENABLE 1916#if EV_PERIODIC_ENABLE
1460 array_free (periodic, EMPTY); 1917 array_free (periodic, EMPTY);
1461#endif 1918#endif
1462#if EV_FORK_ENABLE 1919#if EV_FORK_ENABLE
1463 array_free (fork, EMPTY); 1920 array_free (fork, EMPTY);
1464#endif 1921#endif
1922#if EV_CLEANUP_ENABLE
1923 array_free (cleanup, EMPTY);
1924#endif
1465 array_free (prepare, EMPTY); 1925 array_free (prepare, EMPTY);
1466 array_free (check, EMPTY); 1926 array_free (check, EMPTY);
1467#if EV_ASYNC_ENABLE 1927#if EV_ASYNC_ENABLE
1468 array_free (async, EMPTY); 1928 array_free (async, EMPTY);
1469#endif 1929#endif
1470 1930
1471 backend = 0; 1931 backend = 0;
1932
1933#if EV_MULTIPLICITY
1934 if (ev_is_default_loop (EV_A))
1935#endif
1936 ev_default_loop_ptr = 0;
1937#if EV_MULTIPLICITY
1938 else
1939 ev_free (EV_A);
1940#endif
1472} 1941}
1473 1942
1474#if EV_USE_INOTIFY 1943#if EV_USE_INOTIFY
1475void inline_size infy_fork (EV_P); 1944inline_size void infy_fork (EV_P);
1476#endif 1945#endif
1477 1946
1478void inline_size 1947inline_size void
1479loop_fork (EV_P) 1948loop_fork (EV_P)
1480{ 1949{
1481#if EV_USE_PORT 1950#if EV_USE_PORT
1482 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1951 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1483#endif 1952#endif
… …
1489#endif 1958#endif
1490#if EV_USE_INOTIFY 1959#if EV_USE_INOTIFY
1491 infy_fork (EV_A); 1960 infy_fork (EV_A);
1492#endif 1961#endif
1493 1962
1494 if (ev_is_active (&pipeev)) 1963 if (ev_is_active (&pipe_w))
1495 { 1964 {
1496 /* this "locks" the handlers against writing to the pipe */ 1965 /* this "locks" the handlers against writing to the pipe */
1497 /* while we modify the fd vars */ 1966 /* while we modify the fd vars */
1498 gotsig = 1; 1967 sig_pending = 1;
1499#if EV_ASYNC_ENABLE 1968#if EV_ASYNC_ENABLE
1500 gotasync = 1; 1969 async_pending = 1;
1501#endif 1970#endif
1502 1971
1503 ev_ref (EV_A); 1972 ev_ref (EV_A);
1504 ev_io_stop (EV_A_ &pipeev); 1973 ev_io_stop (EV_A_ &pipe_w);
1505 1974
1506#if EV_USE_EVENTFD 1975#if EV_USE_EVENTFD
1507 if (evfd >= 0) 1976 if (evfd >= 0)
1508 close (evfd); 1977 close (evfd);
1509#endif 1978#endif
1510 1979
1511 if (evpipe [0] >= 0) 1980 if (evpipe [0] >= 0)
1512 { 1981 {
1513 close (evpipe [0]); 1982 EV_WIN32_CLOSE_FD (evpipe [0]);
1514 close (evpipe [1]); 1983 EV_WIN32_CLOSE_FD (evpipe [1]);
1515 } 1984 }
1516 1985
1986#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1517 evpipe_init (EV_A); 1987 evpipe_init (EV_A);
1518 /* now iterate over everything, in case we missed something */ 1988 /* now iterate over everything, in case we missed something */
1519 pipecb (EV_A_ &pipeev, EV_READ); 1989 pipecb (EV_A_ &pipe_w, EV_READ);
1990#endif
1520 } 1991 }
1521 1992
1522 postfork = 0; 1993 postfork = 0;
1523} 1994}
1524 1995
1525#if EV_MULTIPLICITY 1996#if EV_MULTIPLICITY
1526 1997
1527struct ev_loop * 1998struct ev_loop *
1528ev_loop_new (unsigned int flags) 1999ev_loop_new (unsigned int flags)
1529{ 2000{
1530 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2001 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1531 2002
1532 memset (loop, 0, sizeof (struct ev_loop)); 2003 memset (EV_A, 0, sizeof (struct ev_loop));
1533
1534 loop_init (EV_A_ flags); 2004 loop_init (EV_A_ flags);
1535 2005
1536 if (ev_backend (EV_A)) 2006 if (ev_backend (EV_A))
1537 return loop; 2007 return EV_A;
1538 2008
2009 ev_free (EV_A);
1539 return 0; 2010 return 0;
1540} 2011}
1541 2012
1542void 2013#endif /* multiplicity */
1543ev_loop_destroy (EV_P)
1544{
1545 loop_destroy (EV_A);
1546 ev_free (loop);
1547}
1548
1549void
1550ev_loop_fork (EV_P)
1551{
1552 postfork = 1; /* must be in line with ev_default_fork */
1553}
1554 2014
1555#if EV_VERIFY 2015#if EV_VERIFY
1556static void noinline 2016static void noinline
1557verify_watcher (EV_P_ W w) 2017verify_watcher (EV_P_ W w)
1558{ 2018{
… …
1586 verify_watcher (EV_A_ ws [cnt]); 2046 verify_watcher (EV_A_ ws [cnt]);
1587 } 2047 }
1588} 2048}
1589#endif 2049#endif
1590 2050
2051#if EV_FEATURE_API
1591void 2052void
1592ev_loop_verify (EV_P) 2053ev_verify (EV_P)
1593{ 2054{
1594#if EV_VERIFY 2055#if EV_VERIFY
1595 int i; 2056 int i;
1596 WL w; 2057 WL w;
1597 2058
… …
1631#if EV_FORK_ENABLE 2092#if EV_FORK_ENABLE
1632 assert (forkmax >= forkcnt); 2093 assert (forkmax >= forkcnt);
1633 array_verify (EV_A_ (W *)forks, forkcnt); 2094 array_verify (EV_A_ (W *)forks, forkcnt);
1634#endif 2095#endif
1635 2096
2097#if EV_CLEANUP_ENABLE
2098 assert (cleanupmax >= cleanupcnt);
2099 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2100#endif
2101
1636#if EV_ASYNC_ENABLE 2102#if EV_ASYNC_ENABLE
1637 assert (asyncmax >= asynccnt); 2103 assert (asyncmax >= asynccnt);
1638 array_verify (EV_A_ (W *)asyncs, asynccnt); 2104 array_verify (EV_A_ (W *)asyncs, asynccnt);
1639#endif 2105#endif
1640 2106
2107#if EV_PREPARE_ENABLE
1641 assert (preparemax >= preparecnt); 2108 assert (preparemax >= preparecnt);
1642 array_verify (EV_A_ (W *)prepares, preparecnt); 2109 array_verify (EV_A_ (W *)prepares, preparecnt);
2110#endif
1643 2111
2112#if EV_CHECK_ENABLE
1644 assert (checkmax >= checkcnt); 2113 assert (checkmax >= checkcnt);
1645 array_verify (EV_A_ (W *)checks, checkcnt); 2114 array_verify (EV_A_ (W *)checks, checkcnt);
2115#endif
1646 2116
1647# if 0 2117# if 0
2118#if EV_CHILD_ENABLE
1648 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2119 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1649 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2120 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2121#endif
1650# endif 2122# endif
1651#endif 2123#endif
1652} 2124}
1653 2125#endif
1654#endif /* multiplicity */
1655 2126
1656#if EV_MULTIPLICITY 2127#if EV_MULTIPLICITY
1657struct ev_loop * 2128struct ev_loop *
1658ev_default_loop_init (unsigned int flags)
1659#else 2129#else
1660int 2130int
2131#endif
1661ev_default_loop (unsigned int flags) 2132ev_default_loop (unsigned int flags)
1662#endif
1663{ 2133{
1664 if (!ev_default_loop_ptr) 2134 if (!ev_default_loop_ptr)
1665 { 2135 {
1666#if EV_MULTIPLICITY 2136#if EV_MULTIPLICITY
1667 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2137 EV_P = ev_default_loop_ptr = &default_loop_struct;
1668#else 2138#else
1669 ev_default_loop_ptr = 1; 2139 ev_default_loop_ptr = 1;
1670#endif 2140#endif
1671 2141
1672 loop_init (EV_A_ flags); 2142 loop_init (EV_A_ flags);
1673 2143
1674 if (ev_backend (EV_A)) 2144 if (ev_backend (EV_A))
1675 { 2145 {
1676#ifndef _WIN32 2146#if EV_CHILD_ENABLE
1677 ev_signal_init (&childev, childcb, SIGCHLD); 2147 ev_signal_init (&childev, childcb, SIGCHLD);
1678 ev_set_priority (&childev, EV_MAXPRI); 2148 ev_set_priority (&childev, EV_MAXPRI);
1679 ev_signal_start (EV_A_ &childev); 2149 ev_signal_start (EV_A_ &childev);
1680 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2150 ev_unref (EV_A); /* child watcher should not keep loop alive */
1681#endif 2151#endif
… …
1686 2156
1687 return ev_default_loop_ptr; 2157 return ev_default_loop_ptr;
1688} 2158}
1689 2159
1690void 2160void
1691ev_default_destroy (void) 2161ev_loop_fork (EV_P)
1692{ 2162{
1693#if EV_MULTIPLICITY
1694 struct ev_loop *loop = ev_default_loop_ptr;
1695#endif
1696
1697 ev_default_loop_ptr = 0;
1698
1699#ifndef _WIN32
1700 ev_ref (EV_A); /* child watcher */
1701 ev_signal_stop (EV_A_ &childev);
1702#endif
1703
1704 loop_destroy (EV_A);
1705}
1706
1707void
1708ev_default_fork (void)
1709{
1710#if EV_MULTIPLICITY
1711 struct ev_loop *loop = ev_default_loop_ptr;
1712#endif
1713
1714 postfork = 1; /* must be in line with ev_loop_fork */ 2163 postfork = 1; /* must be in line with ev_default_fork */
1715} 2164}
1716 2165
1717/*****************************************************************************/ 2166/*****************************************************************************/
1718 2167
1719void 2168void
1720ev_invoke (EV_P_ void *w, int revents) 2169ev_invoke (EV_P_ void *w, int revents)
1721{ 2170{
1722 EV_CB_INVOKE ((W)w, revents); 2171 EV_CB_INVOKE ((W)w, revents);
1723} 2172}
1724 2173
1725void inline_speed 2174unsigned int
1726call_pending (EV_P) 2175ev_pending_count (EV_P)
2176{
2177 int pri;
2178 unsigned int count = 0;
2179
2180 for (pri = NUMPRI; pri--; )
2181 count += pendingcnt [pri];
2182
2183 return count;
2184}
2185
2186void noinline
2187ev_invoke_pending (EV_P)
1727{ 2188{
1728 int pri; 2189 int pri;
1729 2190
1730 for (pri = NUMPRI; pri--; ) 2191 for (pri = NUMPRI; pri--; )
1731 while (pendingcnt [pri]) 2192 while (pendingcnt [pri])
1732 { 2193 {
1733 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2194 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1734 2195
1735 if (expect_true (p->w))
1736 {
1737 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1738
1739 p->w->pending = 0; 2196 p->w->pending = 0;
1740 EV_CB_INVOKE (p->w, p->events); 2197 EV_CB_INVOKE (p->w, p->events);
1741 EV_FREQUENT_CHECK; 2198 EV_FREQUENT_CHECK;
1742 }
1743 } 2199 }
1744} 2200}
1745 2201
1746#if EV_IDLE_ENABLE 2202#if EV_IDLE_ENABLE
1747void inline_size 2203/* make idle watchers pending. this handles the "call-idle */
2204/* only when higher priorities are idle" logic */
2205inline_size void
1748idle_reify (EV_P) 2206idle_reify (EV_P)
1749{ 2207{
1750 if (expect_false (idleall)) 2208 if (expect_false (idleall))
1751 { 2209 {
1752 int pri; 2210 int pri;
… …
1764 } 2222 }
1765 } 2223 }
1766} 2224}
1767#endif 2225#endif
1768 2226
1769void inline_size 2227/* make timers pending */
2228inline_size void
1770timers_reify (EV_P) 2229timers_reify (EV_P)
1771{ 2230{
1772 EV_FREQUENT_CHECK; 2231 EV_FREQUENT_CHECK;
1773 2232
1774 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2233 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1775 { 2234 {
1776 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2235 do
1777
1778 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1779
1780 /* first reschedule or stop timer */
1781 if (w->repeat)
1782 { 2236 {
2237 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2238
2239 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2240
2241 /* first reschedule or stop timer */
2242 if (w->repeat)
2243 {
1783 ev_at (w) += w->repeat; 2244 ev_at (w) += w->repeat;
1784 if (ev_at (w) < mn_now) 2245 if (ev_at (w) < mn_now)
1785 ev_at (w) = mn_now; 2246 ev_at (w) = mn_now;
1786 2247
1787 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2248 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1788 2249
1789 ANHE_at_cache (timers [HEAP0]); 2250 ANHE_at_cache (timers [HEAP0]);
1790 downheap (timers, timercnt, HEAP0); 2251 downheap (timers, timercnt, HEAP0);
2252 }
2253 else
2254 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2255
2256 EV_FREQUENT_CHECK;
2257 feed_reverse (EV_A_ (W)w);
1791 } 2258 }
1792 else 2259 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1793 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1794 2260
1795 EV_FREQUENT_CHECK; 2261 feed_reverse_done (EV_A_ EV_TIMER);
1796 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1797 } 2262 }
1798} 2263}
1799 2264
1800#if EV_PERIODIC_ENABLE 2265#if EV_PERIODIC_ENABLE
1801void inline_size 2266
2267static void noinline
2268periodic_recalc (EV_P_ ev_periodic *w)
2269{
2270 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2271 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2272
2273 /* the above almost always errs on the low side */
2274 while (at <= ev_rt_now)
2275 {
2276 ev_tstamp nat = at + w->interval;
2277
2278 /* when resolution fails us, we use ev_rt_now */
2279 if (expect_false (nat == at))
2280 {
2281 at = ev_rt_now;
2282 break;
2283 }
2284
2285 at = nat;
2286 }
2287
2288 ev_at (w) = at;
2289}
2290
2291/* make periodics pending */
2292inline_size void
1802periodics_reify (EV_P) 2293periodics_reify (EV_P)
1803{ 2294{
1804 EV_FREQUENT_CHECK; 2295 EV_FREQUENT_CHECK;
1805 2296
1806 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2297 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1807 { 2298 {
1808 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2299 int feed_count = 0;
1809 2300
1810 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2301 do
1811
1812 /* first reschedule or stop timer */
1813 if (w->reschedule_cb)
1814 { 2302 {
2303 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2304
2305 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2306
2307 /* first reschedule or stop timer */
2308 if (w->reschedule_cb)
2309 {
1815 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2310 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1816 2311
1817 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2312 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1818 2313
1819 ANHE_at_cache (periodics [HEAP0]); 2314 ANHE_at_cache (periodics [HEAP0]);
1820 downheap (periodics, periodiccnt, HEAP0); 2315 downheap (periodics, periodiccnt, HEAP0);
2316 }
2317 else if (w->interval)
2318 {
2319 periodic_recalc (EV_A_ w);
2320 ANHE_at_cache (periodics [HEAP0]);
2321 downheap (periodics, periodiccnt, HEAP0);
2322 }
2323 else
2324 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2325
2326 EV_FREQUENT_CHECK;
2327 feed_reverse (EV_A_ (W)w);
1821 } 2328 }
1822 else if (w->interval) 2329 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1823 {
1824 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1825 /* if next trigger time is not sufficiently in the future, put it there */
1826 /* this might happen because of floating point inexactness */
1827 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1828 {
1829 ev_at (w) += w->interval;
1830 2330
1831 /* if interval is unreasonably low we might still have a time in the past */
1832 /* so correct this. this will make the periodic very inexact, but the user */
1833 /* has effectively asked to get triggered more often than possible */
1834 if (ev_at (w) < ev_rt_now)
1835 ev_at (w) = ev_rt_now;
1836 }
1837
1838 ANHE_at_cache (periodics [HEAP0]);
1839 downheap (periodics, periodiccnt, HEAP0);
1840 }
1841 else
1842 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1843
1844 EV_FREQUENT_CHECK;
1845 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2331 feed_reverse_done (EV_A_ EV_PERIODIC);
1846 } 2332 }
1847} 2333}
1848 2334
2335/* simply recalculate all periodics */
2336/* TODO: maybe ensure that at least one event happens when jumping forward? */
1849static void noinline 2337static void noinline
1850periodics_reschedule (EV_P) 2338periodics_reschedule (EV_P)
1851{ 2339{
1852 int i; 2340 int i;
1853 2341
… …
1857 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2345 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1858 2346
1859 if (w->reschedule_cb) 2347 if (w->reschedule_cb)
1860 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2348 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1861 else if (w->interval) 2349 else if (w->interval)
1862 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2350 periodic_recalc (EV_A_ w);
1863 2351
1864 ANHE_at_cache (periodics [i]); 2352 ANHE_at_cache (periodics [i]);
1865 } 2353 }
1866 2354
1867 reheap (periodics, periodiccnt); 2355 reheap (periodics, periodiccnt);
1868} 2356}
1869#endif 2357#endif
1870 2358
1871void inline_speed 2359/* adjust all timers by a given offset */
2360static void noinline
2361timers_reschedule (EV_P_ ev_tstamp adjust)
2362{
2363 int i;
2364
2365 for (i = 0; i < timercnt; ++i)
2366 {
2367 ANHE *he = timers + i + HEAP0;
2368 ANHE_w (*he)->at += adjust;
2369 ANHE_at_cache (*he);
2370 }
2371}
2372
2373/* fetch new monotonic and realtime times from the kernel */
2374/* also detect if there was a timejump, and act accordingly */
2375inline_speed void
1872time_update (EV_P_ ev_tstamp max_block) 2376time_update (EV_P_ ev_tstamp max_block)
1873{ 2377{
1874 int i;
1875
1876#if EV_USE_MONOTONIC 2378#if EV_USE_MONOTONIC
1877 if (expect_true (have_monotonic)) 2379 if (expect_true (have_monotonic))
1878 { 2380 {
2381 int i;
1879 ev_tstamp odiff = rtmn_diff; 2382 ev_tstamp odiff = rtmn_diff;
1880 2383
1881 mn_now = get_clock (); 2384 mn_now = get_clock ();
1882 2385
1883 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2386 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1899 * doesn't hurt either as we only do this on time-jumps or 2402 * doesn't hurt either as we only do this on time-jumps or
1900 * in the unlikely event of having been preempted here. 2403 * in the unlikely event of having been preempted here.
1901 */ 2404 */
1902 for (i = 4; --i; ) 2405 for (i = 4; --i; )
1903 { 2406 {
2407 ev_tstamp diff;
1904 rtmn_diff = ev_rt_now - mn_now; 2408 rtmn_diff = ev_rt_now - mn_now;
1905 2409
2410 diff = odiff - rtmn_diff;
2411
1906 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2412 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1907 return; /* all is well */ 2413 return; /* all is well */
1908 2414
1909 ev_rt_now = ev_time (); 2415 ev_rt_now = ev_time ();
1910 mn_now = get_clock (); 2416 mn_now = get_clock ();
1911 now_floor = mn_now; 2417 now_floor = mn_now;
1912 } 2418 }
1913 2419
2420 /* no timer adjustment, as the monotonic clock doesn't jump */
2421 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1914# if EV_PERIODIC_ENABLE 2422# if EV_PERIODIC_ENABLE
1915 periodics_reschedule (EV_A); 2423 periodics_reschedule (EV_A);
1916# endif 2424# endif
1917 /* no timer adjustment, as the monotonic clock doesn't jump */
1918 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1919 } 2425 }
1920 else 2426 else
1921#endif 2427#endif
1922 { 2428 {
1923 ev_rt_now = ev_time (); 2429 ev_rt_now = ev_time ();
1924 2430
1925 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2431 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1926 { 2432 {
2433 /* adjust timers. this is easy, as the offset is the same for all of them */
2434 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1927#if EV_PERIODIC_ENABLE 2435#if EV_PERIODIC_ENABLE
1928 periodics_reschedule (EV_A); 2436 periodics_reschedule (EV_A);
1929#endif 2437#endif
1930 /* adjust timers. this is easy, as the offset is the same for all of them */
1931 for (i = 0; i < timercnt; ++i)
1932 {
1933 ANHE *he = timers + i + HEAP0;
1934 ANHE_w (*he)->at += ev_rt_now - mn_now;
1935 ANHE_at_cache (*he);
1936 }
1937 } 2438 }
1938 2439
1939 mn_now = ev_rt_now; 2440 mn_now = ev_rt_now;
1940 } 2441 }
1941} 2442}
1942 2443
1943void 2444void
1944ev_ref (EV_P)
1945{
1946 ++activecnt;
1947}
1948
1949void
1950ev_unref (EV_P)
1951{
1952 --activecnt;
1953}
1954
1955void
1956ev_now_update (EV_P)
1957{
1958 time_update (EV_A_ 1e100);
1959}
1960
1961static int loop_done;
1962
1963void
1964ev_loop (EV_P_ int flags) 2445ev_run (EV_P_ int flags)
1965{ 2446{
2447#if EV_FEATURE_API
2448 ++loop_depth;
2449#endif
2450
2451 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2452
1966 loop_done = EVUNLOOP_CANCEL; 2453 loop_done = EVBREAK_CANCEL;
1967 2454
1968 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2455 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1969 2456
1970 do 2457 do
1971 { 2458 {
1972#if EV_VERIFY >= 2 2459#if EV_VERIFY >= 2
1973 ev_loop_verify (EV_A); 2460 ev_verify (EV_A);
1974#endif 2461#endif
1975 2462
1976#ifndef _WIN32 2463#ifndef _WIN32
1977 if (expect_false (curpid)) /* penalise the forking check even more */ 2464 if (expect_false (curpid)) /* penalise the forking check even more */
1978 if (expect_false (getpid () != curpid)) 2465 if (expect_false (getpid () != curpid))
… …
1986 /* we might have forked, so queue fork handlers */ 2473 /* we might have forked, so queue fork handlers */
1987 if (expect_false (postfork)) 2474 if (expect_false (postfork))
1988 if (forkcnt) 2475 if (forkcnt)
1989 { 2476 {
1990 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2477 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1991 call_pending (EV_A); 2478 EV_INVOKE_PENDING;
1992 } 2479 }
1993#endif 2480#endif
1994 2481
2482#if EV_PREPARE_ENABLE
1995 /* queue prepare watchers (and execute them) */ 2483 /* queue prepare watchers (and execute them) */
1996 if (expect_false (preparecnt)) 2484 if (expect_false (preparecnt))
1997 { 2485 {
1998 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2486 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1999 call_pending (EV_A); 2487 EV_INVOKE_PENDING;
2000 } 2488 }
2489#endif
2001 2490
2002 if (expect_false (!activecnt)) 2491 if (expect_false (loop_done))
2003 break; 2492 break;
2004 2493
2005 /* we might have forked, so reify kernel state if necessary */ 2494 /* we might have forked, so reify kernel state if necessary */
2006 if (expect_false (postfork)) 2495 if (expect_false (postfork))
2007 loop_fork (EV_A); 2496 loop_fork (EV_A);
… …
2012 /* calculate blocking time */ 2501 /* calculate blocking time */
2013 { 2502 {
2014 ev_tstamp waittime = 0.; 2503 ev_tstamp waittime = 0.;
2015 ev_tstamp sleeptime = 0.; 2504 ev_tstamp sleeptime = 0.;
2016 2505
2506 /* remember old timestamp for io_blocktime calculation */
2507 ev_tstamp prev_mn_now = mn_now;
2508
2509 /* update time to cancel out callback processing overhead */
2510 time_update (EV_A_ 1e100);
2511
2017 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2512 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
2018 { 2513 {
2019 /* update time to cancel out callback processing overhead */
2020 time_update (EV_A_ 1e100);
2021
2022 waittime = MAX_BLOCKTIME; 2514 waittime = MAX_BLOCKTIME;
2023 2515
2024 if (timercnt) 2516 if (timercnt)
2025 { 2517 {
2026 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2518 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
2033 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2525 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2034 if (waittime > to) waittime = to; 2526 if (waittime > to) waittime = to;
2035 } 2527 }
2036#endif 2528#endif
2037 2529
2530 /* don't let timeouts decrease the waittime below timeout_blocktime */
2038 if (expect_false (waittime < timeout_blocktime)) 2531 if (expect_false (waittime < timeout_blocktime))
2039 waittime = timeout_blocktime; 2532 waittime = timeout_blocktime;
2040 2533
2041 sleeptime = waittime - backend_fudge; 2534 /* extra check because io_blocktime is commonly 0 */
2042
2043 if (expect_true (sleeptime > io_blocktime)) 2535 if (expect_false (io_blocktime))
2044 sleeptime = io_blocktime;
2045
2046 if (sleeptime)
2047 { 2536 {
2537 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2538
2539 if (sleeptime > waittime - backend_fudge)
2540 sleeptime = waittime - backend_fudge;
2541
2542 if (expect_true (sleeptime > 0.))
2543 {
2048 ev_sleep (sleeptime); 2544 ev_sleep (sleeptime);
2049 waittime -= sleeptime; 2545 waittime -= sleeptime;
2546 }
2050 } 2547 }
2051 } 2548 }
2052 2549
2550#if EV_FEATURE_API
2053 ++loop_count; 2551 ++loop_count;
2552#endif
2553 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2054 backend_poll (EV_A_ waittime); 2554 backend_poll (EV_A_ waittime);
2555 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2055 2556
2056 /* update ev_rt_now, do magic */ 2557 /* update ev_rt_now, do magic */
2057 time_update (EV_A_ waittime + sleeptime); 2558 time_update (EV_A_ waittime + sleeptime);
2058 } 2559 }
2059 2560
… …
2066#if EV_IDLE_ENABLE 2567#if EV_IDLE_ENABLE
2067 /* queue idle watchers unless other events are pending */ 2568 /* queue idle watchers unless other events are pending */
2068 idle_reify (EV_A); 2569 idle_reify (EV_A);
2069#endif 2570#endif
2070 2571
2572#if EV_CHECK_ENABLE
2071 /* queue check watchers, to be executed first */ 2573 /* queue check watchers, to be executed first */
2072 if (expect_false (checkcnt)) 2574 if (expect_false (checkcnt))
2073 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2575 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2576#endif
2074 2577
2075 call_pending (EV_A); 2578 EV_INVOKE_PENDING;
2076 } 2579 }
2077 while (expect_true ( 2580 while (expect_true (
2078 activecnt 2581 activecnt
2079 && !loop_done 2582 && !loop_done
2080 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2583 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2081 )); 2584 ));
2082 2585
2083 if (loop_done == EVUNLOOP_ONE) 2586 if (loop_done == EVBREAK_ONE)
2084 loop_done = EVUNLOOP_CANCEL; 2587 loop_done = EVBREAK_CANCEL;
2085}
2086 2588
2589#if EV_FEATURE_API
2590 --loop_depth;
2591#endif
2592}
2593
2087void 2594void
2088ev_unloop (EV_P_ int how) 2595ev_break (EV_P_ int how)
2089{ 2596{
2090 loop_done = how; 2597 loop_done = how;
2091} 2598}
2092 2599
2600void
2601ev_ref (EV_P)
2602{
2603 ++activecnt;
2604}
2605
2606void
2607ev_unref (EV_P)
2608{
2609 --activecnt;
2610}
2611
2612void
2613ev_now_update (EV_P)
2614{
2615 time_update (EV_A_ 1e100);
2616}
2617
2618void
2619ev_suspend (EV_P)
2620{
2621 ev_now_update (EV_A);
2622}
2623
2624void
2625ev_resume (EV_P)
2626{
2627 ev_tstamp mn_prev = mn_now;
2628
2629 ev_now_update (EV_A);
2630 timers_reschedule (EV_A_ mn_now - mn_prev);
2631#if EV_PERIODIC_ENABLE
2632 /* TODO: really do this? */
2633 periodics_reschedule (EV_A);
2634#endif
2635}
2636
2093/*****************************************************************************/ 2637/*****************************************************************************/
2638/* singly-linked list management, used when the expected list length is short */
2094 2639
2095void inline_size 2640inline_size void
2096wlist_add (WL *head, WL elem) 2641wlist_add (WL *head, WL elem)
2097{ 2642{
2098 elem->next = *head; 2643 elem->next = *head;
2099 *head = elem; 2644 *head = elem;
2100} 2645}
2101 2646
2102void inline_size 2647inline_size void
2103wlist_del (WL *head, WL elem) 2648wlist_del (WL *head, WL elem)
2104{ 2649{
2105 while (*head) 2650 while (*head)
2106 { 2651 {
2107 if (*head == elem) 2652 if (expect_true (*head == elem))
2108 { 2653 {
2109 *head = elem->next; 2654 *head = elem->next;
2110 return; 2655 break;
2111 } 2656 }
2112 2657
2113 head = &(*head)->next; 2658 head = &(*head)->next;
2114 } 2659 }
2115} 2660}
2116 2661
2117void inline_speed 2662/* internal, faster, version of ev_clear_pending */
2663inline_speed void
2118clear_pending (EV_P_ W w) 2664clear_pending (EV_P_ W w)
2119{ 2665{
2120 if (w->pending) 2666 if (w->pending)
2121 { 2667 {
2122 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2668 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2123 w->pending = 0; 2669 w->pending = 0;
2124 } 2670 }
2125} 2671}
2126 2672
2127int 2673int
… …
2131 int pending = w_->pending; 2677 int pending = w_->pending;
2132 2678
2133 if (expect_true (pending)) 2679 if (expect_true (pending))
2134 { 2680 {
2135 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2681 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2682 p->w = (W)&pending_w;
2136 w_->pending = 0; 2683 w_->pending = 0;
2137 p->w = 0;
2138 return p->events; 2684 return p->events;
2139 } 2685 }
2140 else 2686 else
2141 return 0; 2687 return 0;
2142} 2688}
2143 2689
2144void inline_size 2690inline_size void
2145pri_adjust (EV_P_ W w) 2691pri_adjust (EV_P_ W w)
2146{ 2692{
2147 int pri = w->priority; 2693 int pri = ev_priority (w);
2148 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2694 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2149 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2695 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2150 w->priority = pri; 2696 ev_set_priority (w, pri);
2151} 2697}
2152 2698
2153void inline_speed 2699inline_speed void
2154ev_start (EV_P_ W w, int active) 2700ev_start (EV_P_ W w, int active)
2155{ 2701{
2156 pri_adjust (EV_A_ w); 2702 pri_adjust (EV_A_ w);
2157 w->active = active; 2703 w->active = active;
2158 ev_ref (EV_A); 2704 ev_ref (EV_A);
2159} 2705}
2160 2706
2161void inline_size 2707inline_size void
2162ev_stop (EV_P_ W w) 2708ev_stop (EV_P_ W w)
2163{ 2709{
2164 ev_unref (EV_A); 2710 ev_unref (EV_A);
2165 w->active = 0; 2711 w->active = 0;
2166} 2712}
… …
2174 2720
2175 if (expect_false (ev_is_active (w))) 2721 if (expect_false (ev_is_active (w)))
2176 return; 2722 return;
2177 2723
2178 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2724 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2179 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); 2725 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2180 2726
2181 EV_FREQUENT_CHECK; 2727 EV_FREQUENT_CHECK;
2182 2728
2183 ev_start (EV_A_ (W)w, 1); 2729 ev_start (EV_A_ (W)w, 1);
2184 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2730 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2185 wlist_add (&anfds[fd].head, (WL)w); 2731 wlist_add (&anfds[fd].head, (WL)w);
2186 2732
2187 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2733 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2188 w->events &= ~EV_IOFDSET; 2734 w->events &= ~EV__IOFDSET;
2189 2735
2190 EV_FREQUENT_CHECK; 2736 EV_FREQUENT_CHECK;
2191} 2737}
2192 2738
2193void noinline 2739void noinline
… …
2202 EV_FREQUENT_CHECK; 2748 EV_FREQUENT_CHECK;
2203 2749
2204 wlist_del (&anfds[w->fd].head, (WL)w); 2750 wlist_del (&anfds[w->fd].head, (WL)w);
2205 ev_stop (EV_A_ (W)w); 2751 ev_stop (EV_A_ (W)w);
2206 2752
2207 fd_change (EV_A_ w->fd, 1); 2753 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2208 2754
2209 EV_FREQUENT_CHECK; 2755 EV_FREQUENT_CHECK;
2210} 2756}
2211 2757
2212void noinline 2758void noinline
… …
2254 timers [active] = timers [timercnt + HEAP0]; 2800 timers [active] = timers [timercnt + HEAP0];
2255 adjustheap (timers, timercnt, active); 2801 adjustheap (timers, timercnt, active);
2256 } 2802 }
2257 } 2803 }
2258 2804
2259 EV_FREQUENT_CHECK;
2260
2261 ev_at (w) -= mn_now; 2805 ev_at (w) -= mn_now;
2262 2806
2263 ev_stop (EV_A_ (W)w); 2807 ev_stop (EV_A_ (W)w);
2808
2809 EV_FREQUENT_CHECK;
2264} 2810}
2265 2811
2266void noinline 2812void noinline
2267ev_timer_again (EV_P_ ev_timer *w) 2813ev_timer_again (EV_P_ ev_timer *w)
2268{ 2814{
… …
2286 } 2832 }
2287 2833
2288 EV_FREQUENT_CHECK; 2834 EV_FREQUENT_CHECK;
2289} 2835}
2290 2836
2837ev_tstamp
2838ev_timer_remaining (EV_P_ ev_timer *w)
2839{
2840 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2841}
2842
2291#if EV_PERIODIC_ENABLE 2843#if EV_PERIODIC_ENABLE
2292void noinline 2844void noinline
2293ev_periodic_start (EV_P_ ev_periodic *w) 2845ev_periodic_start (EV_P_ ev_periodic *w)
2294{ 2846{
2295 if (expect_false (ev_is_active (w))) 2847 if (expect_false (ev_is_active (w)))
… …
2298 if (w->reschedule_cb) 2850 if (w->reschedule_cb)
2299 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2851 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2300 else if (w->interval) 2852 else if (w->interval)
2301 { 2853 {
2302 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2854 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2303 /* this formula differs from the one in periodic_reify because we do not always round up */ 2855 periodic_recalc (EV_A_ w);
2304 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2305 } 2856 }
2306 else 2857 else
2307 ev_at (w) = w->offset; 2858 ev_at (w) = w->offset;
2308 2859
2309 EV_FREQUENT_CHECK; 2860 EV_FREQUENT_CHECK;
… …
2341 periodics [active] = periodics [periodiccnt + HEAP0]; 2892 periodics [active] = periodics [periodiccnt + HEAP0];
2342 adjustheap (periodics, periodiccnt, active); 2893 adjustheap (periodics, periodiccnt, active);
2343 } 2894 }
2344 } 2895 }
2345 2896
2346 EV_FREQUENT_CHECK;
2347
2348 ev_stop (EV_A_ (W)w); 2897 ev_stop (EV_A_ (W)w);
2898
2899 EV_FREQUENT_CHECK;
2349} 2900}
2350 2901
2351void noinline 2902void noinline
2352ev_periodic_again (EV_P_ ev_periodic *w) 2903ev_periodic_again (EV_P_ ev_periodic *w)
2353{ 2904{
… …
2359 2910
2360#ifndef SA_RESTART 2911#ifndef SA_RESTART
2361# define SA_RESTART 0 2912# define SA_RESTART 0
2362#endif 2913#endif
2363 2914
2915#if EV_SIGNAL_ENABLE
2916
2364void noinline 2917void noinline
2365ev_signal_start (EV_P_ ev_signal *w) 2918ev_signal_start (EV_P_ ev_signal *w)
2366{ 2919{
2367#if EV_MULTIPLICITY
2368 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2369#endif
2370 if (expect_false (ev_is_active (w))) 2920 if (expect_false (ev_is_active (w)))
2371 return; 2921 return;
2372 2922
2373 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 2923 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2374 2924
2375 evpipe_init (EV_A); 2925#if EV_MULTIPLICITY
2926 assert (("libev: a signal must not be attached to two different loops",
2927 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2376 2928
2377 EV_FREQUENT_CHECK; 2929 signals [w->signum - 1].loop = EV_A;
2930#endif
2378 2931
2932 EV_FREQUENT_CHECK;
2933
2934#if EV_USE_SIGNALFD
2935 if (sigfd == -2)
2379 { 2936 {
2380#ifndef _WIN32 2937 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2381 sigset_t full, prev; 2938 if (sigfd < 0 && errno == EINVAL)
2382 sigfillset (&full); 2939 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2383 sigprocmask (SIG_SETMASK, &full, &prev);
2384#endif
2385 2940
2386 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2941 if (sigfd >= 0)
2942 {
2943 fd_intern (sigfd); /* doing it twice will not hurt */
2387 2944
2388#ifndef _WIN32 2945 sigemptyset (&sigfd_set);
2389 sigprocmask (SIG_SETMASK, &prev, 0); 2946
2390#endif 2947 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2948 ev_set_priority (&sigfd_w, EV_MAXPRI);
2949 ev_io_start (EV_A_ &sigfd_w);
2950 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2951 }
2391 } 2952 }
2953
2954 if (sigfd >= 0)
2955 {
2956 /* TODO: check .head */
2957 sigaddset (&sigfd_set, w->signum);
2958 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2959
2960 signalfd (sigfd, &sigfd_set, 0);
2961 }
2962#endif
2392 2963
2393 ev_start (EV_A_ (W)w, 1); 2964 ev_start (EV_A_ (W)w, 1);
2394 wlist_add (&signals [w->signum - 1].head, (WL)w); 2965 wlist_add (&signals [w->signum - 1].head, (WL)w);
2395 2966
2396 if (!((WL)w)->next) 2967 if (!((WL)w)->next)
2968# if EV_USE_SIGNALFD
2969 if (sigfd < 0) /*TODO*/
2970# endif
2397 { 2971 {
2398#if _WIN32 2972# ifdef _WIN32
2973 evpipe_init (EV_A);
2974
2399 signal (w->signum, ev_sighandler); 2975 signal (w->signum, ev_sighandler);
2400#else 2976# else
2401 struct sigaction sa; 2977 struct sigaction sa;
2978
2979 evpipe_init (EV_A);
2980
2402 sa.sa_handler = ev_sighandler; 2981 sa.sa_handler = ev_sighandler;
2403 sigfillset (&sa.sa_mask); 2982 sigfillset (&sa.sa_mask);
2404 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2983 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2405 sigaction (w->signum, &sa, 0); 2984 sigaction (w->signum, &sa, 0);
2985
2986 if (origflags & EVFLAG_NOSIGMASK)
2987 {
2988 sigemptyset (&sa.sa_mask);
2989 sigaddset (&sa.sa_mask, w->signum);
2990 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2991 }
2406#endif 2992#endif
2407 } 2993 }
2408 2994
2409 EV_FREQUENT_CHECK; 2995 EV_FREQUENT_CHECK;
2410} 2996}
2411 2997
2412void noinline 2998void noinline
… …
2420 3006
2421 wlist_del (&signals [w->signum - 1].head, (WL)w); 3007 wlist_del (&signals [w->signum - 1].head, (WL)w);
2422 ev_stop (EV_A_ (W)w); 3008 ev_stop (EV_A_ (W)w);
2423 3009
2424 if (!signals [w->signum - 1].head) 3010 if (!signals [w->signum - 1].head)
3011 {
3012#if EV_MULTIPLICITY
3013 signals [w->signum - 1].loop = 0; /* unattach from signal */
3014#endif
3015#if EV_USE_SIGNALFD
3016 if (sigfd >= 0)
3017 {
3018 sigset_t ss;
3019
3020 sigemptyset (&ss);
3021 sigaddset (&ss, w->signum);
3022 sigdelset (&sigfd_set, w->signum);
3023
3024 signalfd (sigfd, &sigfd_set, 0);
3025 sigprocmask (SIG_UNBLOCK, &ss, 0);
3026 }
3027 else
3028#endif
2425 signal (w->signum, SIG_DFL); 3029 signal (w->signum, SIG_DFL);
3030 }
2426 3031
2427 EV_FREQUENT_CHECK; 3032 EV_FREQUENT_CHECK;
2428} 3033}
3034
3035#endif
3036
3037#if EV_CHILD_ENABLE
2429 3038
2430void 3039void
2431ev_child_start (EV_P_ ev_child *w) 3040ev_child_start (EV_P_ ev_child *w)
2432{ 3041{
2433#if EV_MULTIPLICITY 3042#if EV_MULTIPLICITY
… …
2437 return; 3046 return;
2438 3047
2439 EV_FREQUENT_CHECK; 3048 EV_FREQUENT_CHECK;
2440 3049
2441 ev_start (EV_A_ (W)w, 1); 3050 ev_start (EV_A_ (W)w, 1);
2442 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3051 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2443 3052
2444 EV_FREQUENT_CHECK; 3053 EV_FREQUENT_CHECK;
2445} 3054}
2446 3055
2447void 3056void
… …
2451 if (expect_false (!ev_is_active (w))) 3060 if (expect_false (!ev_is_active (w)))
2452 return; 3061 return;
2453 3062
2454 EV_FREQUENT_CHECK; 3063 EV_FREQUENT_CHECK;
2455 3064
2456 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3065 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2457 ev_stop (EV_A_ (W)w); 3066 ev_stop (EV_A_ (W)w);
2458 3067
2459 EV_FREQUENT_CHECK; 3068 EV_FREQUENT_CHECK;
2460} 3069}
3070
3071#endif
2461 3072
2462#if EV_STAT_ENABLE 3073#if EV_STAT_ENABLE
2463 3074
2464# ifdef _WIN32 3075# ifdef _WIN32
2465# undef lstat 3076# undef lstat
… …
2471#define MIN_STAT_INTERVAL 0.1074891 3082#define MIN_STAT_INTERVAL 0.1074891
2472 3083
2473static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3084static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2474 3085
2475#if EV_USE_INOTIFY 3086#if EV_USE_INOTIFY
2476# define EV_INOTIFY_BUFSIZE 8192 3087
3088/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3089# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2477 3090
2478static void noinline 3091static void noinline
2479infy_add (EV_P_ ev_stat *w) 3092infy_add (EV_P_ ev_stat *w)
2480{ 3093{
2481 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3094 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2482 3095
2483 if (w->wd < 0) 3096 if (w->wd >= 0)
3097 {
3098 struct statfs sfs;
3099
3100 /* now local changes will be tracked by inotify, but remote changes won't */
3101 /* unless the filesystem is known to be local, we therefore still poll */
3102 /* also do poll on <2.6.25, but with normal frequency */
3103
3104 if (!fs_2625)
3105 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3106 else if (!statfs (w->path, &sfs)
3107 && (sfs.f_type == 0x1373 /* devfs */
3108 || sfs.f_type == 0xEF53 /* ext2/3 */
3109 || sfs.f_type == 0x3153464a /* jfs */
3110 || sfs.f_type == 0x52654973 /* reiser3 */
3111 || sfs.f_type == 0x01021994 /* tempfs */
3112 || sfs.f_type == 0x58465342 /* xfs */))
3113 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3114 else
3115 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2484 { 3116 }
3117 else
3118 {
3119 /* can't use inotify, continue to stat */
2485 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3120 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2486 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2487 3121
2488 /* monitor some parent directory for speedup hints */ 3122 /* if path is not there, monitor some parent directory for speedup hints */
2489 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3123 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2490 /* but an efficiency issue only */ 3124 /* but an efficiency issue only */
2491 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3125 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2492 { 3126 {
2493 char path [4096]; 3127 char path [4096];
… …
2503 if (!pend || pend == path) 3137 if (!pend || pend == path)
2504 break; 3138 break;
2505 3139
2506 *pend = 0; 3140 *pend = 0;
2507 w->wd = inotify_add_watch (fs_fd, path, mask); 3141 w->wd = inotify_add_watch (fs_fd, path, mask);
2508 } 3142 }
2509 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3143 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2510 } 3144 }
2511 } 3145 }
2512 3146
2513 if (w->wd >= 0) 3147 if (w->wd >= 0)
2514 {
2515 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3148 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2516 3149
2517 /* now local changes will be tracked by inotify, but remote changes won't */ 3150 /* now re-arm timer, if required */
2518 /* unless the filesystem it known to be local, we therefore still poll */ 3151 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2519 /* also do poll on <2.6.25, but with normal frequency */
2520 struct statfs sfs;
2521
2522 if (fs_2625 && !statfs (w->path, &sfs))
2523 if (sfs.f_type == 0x1373 /* devfs */
2524 || sfs.f_type == 0xEF53 /* ext2/3 */
2525 || sfs.f_type == 0x3153464a /* jfs */
2526 || sfs.f_type == 0x52654973 /* reiser3 */
2527 || sfs.f_type == 0x01021994 /* tempfs */
2528 || sfs.f_type == 0x58465342 /* xfs */)
2529 return;
2530
2531 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2532 ev_timer_again (EV_A_ &w->timer); 3152 ev_timer_again (EV_A_ &w->timer);
2533 } 3153 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2534} 3154}
2535 3155
2536static void noinline 3156static void noinline
2537infy_del (EV_P_ ev_stat *w) 3157infy_del (EV_P_ ev_stat *w)
2538{ 3158{
… …
2541 3161
2542 if (wd < 0) 3162 if (wd < 0)
2543 return; 3163 return;
2544 3164
2545 w->wd = -2; 3165 w->wd = -2;
2546 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3166 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2547 wlist_del (&fs_hash [slot].head, (WL)w); 3167 wlist_del (&fs_hash [slot].head, (WL)w);
2548 3168
2549 /* remove this watcher, if others are watching it, they will rearm */ 3169 /* remove this watcher, if others are watching it, they will rearm */
2550 inotify_rm_watch (fs_fd, wd); 3170 inotify_rm_watch (fs_fd, wd);
2551} 3171}
… …
2553static void noinline 3173static void noinline
2554infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3174infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2555{ 3175{
2556 if (slot < 0) 3176 if (slot < 0)
2557 /* overflow, need to check for all hash slots */ 3177 /* overflow, need to check for all hash slots */
2558 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3178 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2559 infy_wd (EV_A_ slot, wd, ev); 3179 infy_wd (EV_A_ slot, wd, ev);
2560 else 3180 else
2561 { 3181 {
2562 WL w_; 3182 WL w_;
2563 3183
2564 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3184 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2565 { 3185 {
2566 ev_stat *w = (ev_stat *)w_; 3186 ev_stat *w = (ev_stat *)w_;
2567 w_ = w_->next; /* lets us remove this watcher and all before it */ 3187 w_ = w_->next; /* lets us remove this watcher and all before it */
2568 3188
2569 if (w->wd == wd || wd == -1) 3189 if (w->wd == wd || wd == -1)
2570 { 3190 {
2571 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3191 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2572 { 3192 {
2573 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3193 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2574 w->wd = -1; 3194 w->wd = -1;
2575 infy_add (EV_A_ w); /* re-add, no matter what */ 3195 infy_add (EV_A_ w); /* re-add, no matter what */
2576 } 3196 }
2577 3197
2578 stat_timer_cb (EV_A_ &w->timer, 0); 3198 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2583 3203
2584static void 3204static void
2585infy_cb (EV_P_ ev_io *w, int revents) 3205infy_cb (EV_P_ ev_io *w, int revents)
2586{ 3206{
2587 char buf [EV_INOTIFY_BUFSIZE]; 3207 char buf [EV_INOTIFY_BUFSIZE];
2588 struct inotify_event *ev = (struct inotify_event *)buf;
2589 int ofs; 3208 int ofs;
2590 int len = read (fs_fd, buf, sizeof (buf)); 3209 int len = read (fs_fd, buf, sizeof (buf));
2591 3210
2592 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3211 for (ofs = 0; ofs < len; )
3212 {
3213 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2593 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3214 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3215 ofs += sizeof (struct inotify_event) + ev->len;
3216 }
2594} 3217}
2595 3218
2596void inline_size 3219inline_size void
2597check_2625 (EV_P) 3220ev_check_2625 (EV_P)
2598{ 3221{
2599 /* kernels < 2.6.25 are borked 3222 /* kernels < 2.6.25 are borked
2600 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3223 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2601 */ 3224 */
2602 struct utsname buf; 3225 if (ev_linux_version () < 0x020619)
2603 int major, minor, micro;
2604
2605 if (uname (&buf))
2606 return; 3226 return;
2607 3227
2608 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2609 return;
2610
2611 if (major < 2
2612 || (major == 2 && minor < 6)
2613 || (major == 2 && minor == 6 && micro < 25))
2614 return;
2615
2616 fs_2625 = 1; 3228 fs_2625 = 1;
2617} 3229}
2618 3230
2619void inline_size 3231inline_size int
3232infy_newfd (void)
3233{
3234#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3235 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3236 if (fd >= 0)
3237 return fd;
3238#endif
3239 return inotify_init ();
3240}
3241
3242inline_size void
2620infy_init (EV_P) 3243infy_init (EV_P)
2621{ 3244{
2622 if (fs_fd != -2) 3245 if (fs_fd != -2)
2623 return; 3246 return;
2624 3247
2625 fs_fd = -1; 3248 fs_fd = -1;
2626 3249
2627 check_2625 (EV_A); 3250 ev_check_2625 (EV_A);
2628 3251
2629 fs_fd = inotify_init (); 3252 fs_fd = infy_newfd ();
2630 3253
2631 if (fs_fd >= 0) 3254 if (fs_fd >= 0)
2632 { 3255 {
3256 fd_intern (fs_fd);
2633 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3257 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2634 ev_set_priority (&fs_w, EV_MAXPRI); 3258 ev_set_priority (&fs_w, EV_MAXPRI);
2635 ev_io_start (EV_A_ &fs_w); 3259 ev_io_start (EV_A_ &fs_w);
3260 ev_unref (EV_A);
2636 } 3261 }
2637} 3262}
2638 3263
2639void inline_size 3264inline_size void
2640infy_fork (EV_P) 3265infy_fork (EV_P)
2641{ 3266{
2642 int slot; 3267 int slot;
2643 3268
2644 if (fs_fd < 0) 3269 if (fs_fd < 0)
2645 return; 3270 return;
2646 3271
3272 ev_ref (EV_A);
3273 ev_io_stop (EV_A_ &fs_w);
2647 close (fs_fd); 3274 close (fs_fd);
2648 fs_fd = inotify_init (); 3275 fs_fd = infy_newfd ();
2649 3276
3277 if (fs_fd >= 0)
3278 {
3279 fd_intern (fs_fd);
3280 ev_io_set (&fs_w, fs_fd, EV_READ);
3281 ev_io_start (EV_A_ &fs_w);
3282 ev_unref (EV_A);
3283 }
3284
2650 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3285 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2651 { 3286 {
2652 WL w_ = fs_hash [slot].head; 3287 WL w_ = fs_hash [slot].head;
2653 fs_hash [slot].head = 0; 3288 fs_hash [slot].head = 0;
2654 3289
2655 while (w_) 3290 while (w_)
… …
2660 w->wd = -1; 3295 w->wd = -1;
2661 3296
2662 if (fs_fd >= 0) 3297 if (fs_fd >= 0)
2663 infy_add (EV_A_ w); /* re-add, no matter what */ 3298 infy_add (EV_A_ w); /* re-add, no matter what */
2664 else 3299 else
3300 {
3301 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3302 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2665 ev_timer_again (EV_A_ &w->timer); 3303 ev_timer_again (EV_A_ &w->timer);
3304 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3305 }
2666 } 3306 }
2667 } 3307 }
2668} 3308}
2669 3309
2670#endif 3310#endif
… …
2687static void noinline 3327static void noinline
2688stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3328stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2689{ 3329{
2690 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3330 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2691 3331
2692 /* we copy this here each the time so that */ 3332 ev_statdata prev = w->attr;
2693 /* prev has the old value when the callback gets invoked */
2694 w->prev = w->attr;
2695 ev_stat_stat (EV_A_ w); 3333 ev_stat_stat (EV_A_ w);
2696 3334
2697 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3335 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2698 if ( 3336 if (
2699 w->prev.st_dev != w->attr.st_dev 3337 prev.st_dev != w->attr.st_dev
2700 || w->prev.st_ino != w->attr.st_ino 3338 || prev.st_ino != w->attr.st_ino
2701 || w->prev.st_mode != w->attr.st_mode 3339 || prev.st_mode != w->attr.st_mode
2702 || w->prev.st_nlink != w->attr.st_nlink 3340 || prev.st_nlink != w->attr.st_nlink
2703 || w->prev.st_uid != w->attr.st_uid 3341 || prev.st_uid != w->attr.st_uid
2704 || w->prev.st_gid != w->attr.st_gid 3342 || prev.st_gid != w->attr.st_gid
2705 || w->prev.st_rdev != w->attr.st_rdev 3343 || prev.st_rdev != w->attr.st_rdev
2706 || w->prev.st_size != w->attr.st_size 3344 || prev.st_size != w->attr.st_size
2707 || w->prev.st_atime != w->attr.st_atime 3345 || prev.st_atime != w->attr.st_atime
2708 || w->prev.st_mtime != w->attr.st_mtime 3346 || prev.st_mtime != w->attr.st_mtime
2709 || w->prev.st_ctime != w->attr.st_ctime 3347 || prev.st_ctime != w->attr.st_ctime
2710 ) { 3348 ) {
3349 /* we only update w->prev on actual differences */
3350 /* in case we test more often than invoke the callback, */
3351 /* to ensure that prev is always different to attr */
3352 w->prev = prev;
3353
2711 #if EV_USE_INOTIFY 3354 #if EV_USE_INOTIFY
2712 if (fs_fd >= 0) 3355 if (fs_fd >= 0)
2713 { 3356 {
2714 infy_del (EV_A_ w); 3357 infy_del (EV_A_ w);
2715 infy_add (EV_A_ w); 3358 infy_add (EV_A_ w);
… …
2740 3383
2741 if (fs_fd >= 0) 3384 if (fs_fd >= 0)
2742 infy_add (EV_A_ w); 3385 infy_add (EV_A_ w);
2743 else 3386 else
2744#endif 3387#endif
3388 {
2745 ev_timer_again (EV_A_ &w->timer); 3389 ev_timer_again (EV_A_ &w->timer);
3390 ev_unref (EV_A);
3391 }
2746 3392
2747 ev_start (EV_A_ (W)w, 1); 3393 ev_start (EV_A_ (W)w, 1);
2748 3394
2749 EV_FREQUENT_CHECK; 3395 EV_FREQUENT_CHECK;
2750} 3396}
… …
2759 EV_FREQUENT_CHECK; 3405 EV_FREQUENT_CHECK;
2760 3406
2761#if EV_USE_INOTIFY 3407#if EV_USE_INOTIFY
2762 infy_del (EV_A_ w); 3408 infy_del (EV_A_ w);
2763#endif 3409#endif
3410
3411 if (ev_is_active (&w->timer))
3412 {
3413 ev_ref (EV_A);
2764 ev_timer_stop (EV_A_ &w->timer); 3414 ev_timer_stop (EV_A_ &w->timer);
3415 }
2765 3416
2766 ev_stop (EV_A_ (W)w); 3417 ev_stop (EV_A_ (W)w);
2767 3418
2768 EV_FREQUENT_CHECK; 3419 EV_FREQUENT_CHECK;
2769} 3420}
… …
2814 3465
2815 EV_FREQUENT_CHECK; 3466 EV_FREQUENT_CHECK;
2816} 3467}
2817#endif 3468#endif
2818 3469
3470#if EV_PREPARE_ENABLE
2819void 3471void
2820ev_prepare_start (EV_P_ ev_prepare *w) 3472ev_prepare_start (EV_P_ ev_prepare *w)
2821{ 3473{
2822 if (expect_false (ev_is_active (w))) 3474 if (expect_false (ev_is_active (w)))
2823 return; 3475 return;
… …
2849 3501
2850 ev_stop (EV_A_ (W)w); 3502 ev_stop (EV_A_ (W)w);
2851 3503
2852 EV_FREQUENT_CHECK; 3504 EV_FREQUENT_CHECK;
2853} 3505}
3506#endif
2854 3507
3508#if EV_CHECK_ENABLE
2855void 3509void
2856ev_check_start (EV_P_ ev_check *w) 3510ev_check_start (EV_P_ ev_check *w)
2857{ 3511{
2858 if (expect_false (ev_is_active (w))) 3512 if (expect_false (ev_is_active (w)))
2859 return; 3513 return;
… …
2885 3539
2886 ev_stop (EV_A_ (W)w); 3540 ev_stop (EV_A_ (W)w);
2887 3541
2888 EV_FREQUENT_CHECK; 3542 EV_FREQUENT_CHECK;
2889} 3543}
3544#endif
2890 3545
2891#if EV_EMBED_ENABLE 3546#if EV_EMBED_ENABLE
2892void noinline 3547void noinline
2893ev_embed_sweep (EV_P_ ev_embed *w) 3548ev_embed_sweep (EV_P_ ev_embed *w)
2894{ 3549{
2895 ev_loop (w->other, EVLOOP_NONBLOCK); 3550 ev_run (w->other, EVRUN_NOWAIT);
2896} 3551}
2897 3552
2898static void 3553static void
2899embed_io_cb (EV_P_ ev_io *io, int revents) 3554embed_io_cb (EV_P_ ev_io *io, int revents)
2900{ 3555{
2901 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3556 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2902 3557
2903 if (ev_cb (w)) 3558 if (ev_cb (w))
2904 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3559 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2905 else 3560 else
2906 ev_loop (w->other, EVLOOP_NONBLOCK); 3561 ev_run (w->other, EVRUN_NOWAIT);
2907} 3562}
2908 3563
2909static void 3564static void
2910embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3565embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2911{ 3566{
2912 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3567 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2913 3568
2914 { 3569 {
2915 struct ev_loop *loop = w->other; 3570 EV_P = w->other;
2916 3571
2917 while (fdchangecnt) 3572 while (fdchangecnt)
2918 { 3573 {
2919 fd_reify (EV_A); 3574 fd_reify (EV_A);
2920 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3575 ev_run (EV_A_ EVRUN_NOWAIT);
2921 } 3576 }
2922 } 3577 }
2923} 3578}
2924 3579
2925static void 3580static void
… …
2928 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3583 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2929 3584
2930 ev_embed_stop (EV_A_ w); 3585 ev_embed_stop (EV_A_ w);
2931 3586
2932 { 3587 {
2933 struct ev_loop *loop = w->other; 3588 EV_P = w->other;
2934 3589
2935 ev_loop_fork (EV_A); 3590 ev_loop_fork (EV_A);
2936 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3591 ev_run (EV_A_ EVRUN_NOWAIT);
2937 } 3592 }
2938 3593
2939 ev_embed_start (EV_A_ w); 3594 ev_embed_start (EV_A_ w);
2940} 3595}
2941 3596
… …
2952{ 3607{
2953 if (expect_false (ev_is_active (w))) 3608 if (expect_false (ev_is_active (w)))
2954 return; 3609 return;
2955 3610
2956 { 3611 {
2957 struct ev_loop *loop = w->other; 3612 EV_P = w->other;
2958 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3613 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2959 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3614 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2960 } 3615 }
2961 3616
2962 EV_FREQUENT_CHECK; 3617 EV_FREQUENT_CHECK;
… …
2989 3644
2990 ev_io_stop (EV_A_ &w->io); 3645 ev_io_stop (EV_A_ &w->io);
2991 ev_prepare_stop (EV_A_ &w->prepare); 3646 ev_prepare_stop (EV_A_ &w->prepare);
2992 ev_fork_stop (EV_A_ &w->fork); 3647 ev_fork_stop (EV_A_ &w->fork);
2993 3648
3649 ev_stop (EV_A_ (W)w);
3650
2994 EV_FREQUENT_CHECK; 3651 EV_FREQUENT_CHECK;
2995} 3652}
2996#endif 3653#endif
2997 3654
2998#if EV_FORK_ENABLE 3655#if EV_FORK_ENABLE
… …
3031 3688
3032 EV_FREQUENT_CHECK; 3689 EV_FREQUENT_CHECK;
3033} 3690}
3034#endif 3691#endif
3035 3692
3036#if EV_ASYNC_ENABLE 3693#if EV_CLEANUP_ENABLE
3037void 3694void
3038ev_async_start (EV_P_ ev_async *w) 3695ev_cleanup_start (EV_P_ ev_cleanup *w)
3039{ 3696{
3040 if (expect_false (ev_is_active (w))) 3697 if (expect_false (ev_is_active (w)))
3041 return; 3698 return;
3699
3700 EV_FREQUENT_CHECK;
3701
3702 ev_start (EV_A_ (W)w, ++cleanupcnt);
3703 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3704 cleanups [cleanupcnt - 1] = w;
3705
3706 /* cleanup watchers should never keep a refcount on the loop */
3707 ev_unref (EV_A);
3708 EV_FREQUENT_CHECK;
3709}
3710
3711void
3712ev_cleanup_stop (EV_P_ ev_cleanup *w)
3713{
3714 clear_pending (EV_A_ (W)w);
3715 if (expect_false (!ev_is_active (w)))
3716 return;
3717
3718 EV_FREQUENT_CHECK;
3719 ev_ref (EV_A);
3720
3721 {
3722 int active = ev_active (w);
3723
3724 cleanups [active - 1] = cleanups [--cleanupcnt];
3725 ev_active (cleanups [active - 1]) = active;
3726 }
3727
3728 ev_stop (EV_A_ (W)w);
3729
3730 EV_FREQUENT_CHECK;
3731}
3732#endif
3733
3734#if EV_ASYNC_ENABLE
3735void
3736ev_async_start (EV_P_ ev_async *w)
3737{
3738 if (expect_false (ev_is_active (w)))
3739 return;
3740
3741 w->sent = 0;
3042 3742
3043 evpipe_init (EV_A); 3743 evpipe_init (EV_A);
3044 3744
3045 EV_FREQUENT_CHECK; 3745 EV_FREQUENT_CHECK;
3046 3746
… …
3074 3774
3075void 3775void
3076ev_async_send (EV_P_ ev_async *w) 3776ev_async_send (EV_P_ ev_async *w)
3077{ 3777{
3078 w->sent = 1; 3778 w->sent = 1;
3079 evpipe_write (EV_A_ &gotasync); 3779 evpipe_write (EV_A_ &async_pending);
3080} 3780}
3081#endif 3781#endif
3082 3782
3083/*****************************************************************************/ 3783/*****************************************************************************/
3084 3784
… …
3124{ 3824{
3125 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3825 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3126 3826
3127 if (expect_false (!once)) 3827 if (expect_false (!once))
3128 { 3828 {
3129 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3829 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3130 return; 3830 return;
3131 } 3831 }
3132 3832
3133 once->cb = cb; 3833 once->cb = cb;
3134 once->arg = arg; 3834 once->arg = arg;
… …
3146 ev_timer_set (&once->to, timeout, 0.); 3846 ev_timer_set (&once->to, timeout, 0.);
3147 ev_timer_start (EV_A_ &once->to); 3847 ev_timer_start (EV_A_ &once->to);
3148 } 3848 }
3149} 3849}
3150 3850
3851/*****************************************************************************/
3852
3853#if EV_WALK_ENABLE
3854void
3855ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3856{
3857 int i, j;
3858 ev_watcher_list *wl, *wn;
3859
3860 if (types & (EV_IO | EV_EMBED))
3861 for (i = 0; i < anfdmax; ++i)
3862 for (wl = anfds [i].head; wl; )
3863 {
3864 wn = wl->next;
3865
3866#if EV_EMBED_ENABLE
3867 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3868 {
3869 if (types & EV_EMBED)
3870 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3871 }
3872 else
3873#endif
3874#if EV_USE_INOTIFY
3875 if (ev_cb ((ev_io *)wl) == infy_cb)
3876 ;
3877 else
3878#endif
3879 if ((ev_io *)wl != &pipe_w)
3880 if (types & EV_IO)
3881 cb (EV_A_ EV_IO, wl);
3882
3883 wl = wn;
3884 }
3885
3886 if (types & (EV_TIMER | EV_STAT))
3887 for (i = timercnt + HEAP0; i-- > HEAP0; )
3888#if EV_STAT_ENABLE
3889 /*TODO: timer is not always active*/
3890 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3891 {
3892 if (types & EV_STAT)
3893 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3894 }
3895 else
3896#endif
3897 if (types & EV_TIMER)
3898 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3899
3900#if EV_PERIODIC_ENABLE
3901 if (types & EV_PERIODIC)
3902 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3903 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3904#endif
3905
3906#if EV_IDLE_ENABLE
3907 if (types & EV_IDLE)
3908 for (j = NUMPRI; i--; )
3909 for (i = idlecnt [j]; i--; )
3910 cb (EV_A_ EV_IDLE, idles [j][i]);
3911#endif
3912
3913#if EV_FORK_ENABLE
3914 if (types & EV_FORK)
3915 for (i = forkcnt; i--; )
3916 if (ev_cb (forks [i]) != embed_fork_cb)
3917 cb (EV_A_ EV_FORK, forks [i]);
3918#endif
3919
3920#if EV_ASYNC_ENABLE
3921 if (types & EV_ASYNC)
3922 for (i = asynccnt; i--; )
3923 cb (EV_A_ EV_ASYNC, asyncs [i]);
3924#endif
3925
3926#if EV_PREPARE_ENABLE
3927 if (types & EV_PREPARE)
3928 for (i = preparecnt; i--; )
3929# if EV_EMBED_ENABLE
3930 if (ev_cb (prepares [i]) != embed_prepare_cb)
3931# endif
3932 cb (EV_A_ EV_PREPARE, prepares [i]);
3933#endif
3934
3935#if EV_CHECK_ENABLE
3936 if (types & EV_CHECK)
3937 for (i = checkcnt; i--; )
3938 cb (EV_A_ EV_CHECK, checks [i]);
3939#endif
3940
3941#if EV_SIGNAL_ENABLE
3942 if (types & EV_SIGNAL)
3943 for (i = 0; i < EV_NSIG - 1; ++i)
3944 for (wl = signals [i].head; wl; )
3945 {
3946 wn = wl->next;
3947 cb (EV_A_ EV_SIGNAL, wl);
3948 wl = wn;
3949 }
3950#endif
3951
3952#if EV_CHILD_ENABLE
3953 if (types & EV_CHILD)
3954 for (i = (EV_PID_HASHSIZE); i--; )
3955 for (wl = childs [i]; wl; )
3956 {
3957 wn = wl->next;
3958 cb (EV_A_ EV_CHILD, wl);
3959 wl = wn;
3960 }
3961#endif
3962/* EV_STAT 0x00001000 /* stat data changed */
3963/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3964}
3965#endif
3966
3151#if EV_MULTIPLICITY 3967#if EV_MULTIPLICITY
3152 #include "ev_wrap.h" 3968 #include "ev_wrap.h"
3153#endif 3969#endif
3154 3970
3155#ifdef __cplusplus 3971EV_CPP(})
3156}
3157#endif
3158 3972

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