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Comparing libev/ev.c (file contents):
Revision 1.284 by root, Wed Apr 15 17:49:26 2009 UTC vs.
Revision 1.375 by root, Sat Jun 4 05:25:03 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
575inline_size ev_tstamp 828inline_size ev_tstamp
576get_clock (void) 829get_clock (void)
577{ 830{
578#if EV_USE_MONOTONIC 831#if EV_USE_MONOTONIC
… …
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
626/*****************************************************************************/ 875/*****************************************************************************/
627 876
628#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 877#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629 878
879/* find a suitable new size for the given array, */
880/* hopefully by rounding to a nice-to-malloc size */
630inline_size int 881inline_size int
631array_nextsize (int elem, int cur, int cnt) 882array_nextsize (int elem, int cur, int cnt)
632{ 883{
633 int ncur = cur + 1; 884 int ncur = cur + 1;
634 885
… …
680#define array_free(stem, idx) \ 931#define array_free(stem, idx) \
681 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 932 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682 933
683/*****************************************************************************/ 934/*****************************************************************************/
684 935
936/* dummy callback for pending events */
937static void noinline
938pendingcb (EV_P_ ev_prepare *w, int revents)
939{
940}
941
685void noinline 942void noinline
686ev_feed_event (EV_P_ void *w, int revents) 943ev_feed_event (EV_P_ void *w, int revents)
687{ 944{
688 W w_ = (W)w; 945 W w_ = (W)w;
689 int pri = ABSPRI (w_); 946 int pri = ABSPRI (w_);
… …
724} 981}
725 982
726/*****************************************************************************/ 983/*****************************************************************************/
727 984
728inline_speed void 985inline_speed void
729fd_event (EV_P_ int fd, int revents) 986fd_event_nocheck (EV_P_ int fd, int revents)
730{ 987{
731 ANFD *anfd = anfds + fd; 988 ANFD *anfd = anfds + fd;
732 ev_io *w; 989 ev_io *w;
733 990
734 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 991 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
738 if (ev) 995 if (ev)
739 ev_feed_event (EV_A_ (W)w, ev); 996 ev_feed_event (EV_A_ (W)w, ev);
740 } 997 }
741} 998}
742 999
1000/* do not submit kernel events for fds that have reify set */
1001/* because that means they changed while we were polling for new events */
1002inline_speed void
1003fd_event (EV_P_ int fd, int revents)
1004{
1005 ANFD *anfd = anfds + fd;
1006
1007 if (expect_true (!anfd->reify))
1008 fd_event_nocheck (EV_A_ fd, revents);
1009}
1010
743void 1011void
744ev_feed_fd_event (EV_P_ int fd, int revents) 1012ev_feed_fd_event (EV_P_ int fd, int revents)
745{ 1013{
746 if (fd >= 0 && fd < anfdmax) 1014 if (fd >= 0 && fd < anfdmax)
747 fd_event (EV_A_ fd, revents); 1015 fd_event_nocheck (EV_A_ fd, revents);
748} 1016}
749 1017
1018/* make sure the external fd watch events are in-sync */
1019/* with the kernel/libev internal state */
750inline_size void 1020inline_size void
751fd_reify (EV_P) 1021fd_reify (EV_P)
752{ 1022{
753 int i; 1023 int i;
1024
1025#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1026 for (i = 0; i < fdchangecnt; ++i)
1027 {
1028 int fd = fdchanges [i];
1029 ANFD *anfd = anfds + fd;
1030
1031 if (anfd->reify & EV__IOFDSET && anfd->head)
1032 {
1033 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1034
1035 if (handle != anfd->handle)
1036 {
1037 unsigned long arg;
1038
1039 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1040
1041 /* handle changed, but fd didn't - we need to do it in two steps */
1042 backend_modify (EV_A_ fd, anfd->events, 0);
1043 anfd->events = 0;
1044 anfd->handle = handle;
1045 }
1046 }
1047 }
1048#endif
754 1049
755 for (i = 0; i < fdchangecnt; ++i) 1050 for (i = 0; i < fdchangecnt; ++i)
756 { 1051 {
757 int fd = fdchanges [i]; 1052 int fd = fdchanges [i];
758 ANFD *anfd = anfds + fd; 1053 ANFD *anfd = anfds + fd;
759 ev_io *w; 1054 ev_io *w;
760 1055
761 unsigned char events = 0; 1056 unsigned char o_events = anfd->events;
1057 unsigned char o_reify = anfd->reify;
762 1058
763 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1059 anfd->reify = 0;
764 events |= (unsigned char)w->events;
765 1060
766#if EV_SELECT_IS_WINSOCKET 1061 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
767 if (events)
768 { 1062 {
769 unsigned long arg; 1063 anfd->events = 0;
770 #ifdef EV_FD_TO_WIN32_HANDLE 1064
771 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1065 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
772 #else 1066 anfd->events |= (unsigned char)w->events;
773 anfd->handle = _get_osfhandle (fd); 1067
774 #endif 1068 if (o_events != anfd->events)
775 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1069 o_reify = EV__IOFDSET; /* actually |= */
776 } 1070 }
777#endif
778 1071
779 { 1072 if (o_reify & EV__IOFDSET)
780 unsigned char o_events = anfd->events;
781 unsigned char o_reify = anfd->reify;
782
783 anfd->reify = 0;
784 anfd->events = events;
785
786 if (o_events != events || o_reify & EV__IOFDSET)
787 backend_modify (EV_A_ fd, o_events, events); 1073 backend_modify (EV_A_ fd, o_events, anfd->events);
788 }
789 } 1074 }
790 1075
791 fdchangecnt = 0; 1076 fdchangecnt = 0;
792} 1077}
793 1078
1079/* something about the given fd changed */
794inline_size void 1080inline_size void
795fd_change (EV_P_ int fd, int flags) 1081fd_change (EV_P_ int fd, int flags)
796{ 1082{
797 unsigned char reify = anfds [fd].reify; 1083 unsigned char reify = anfds [fd].reify;
798 anfds [fd].reify |= flags; 1084 anfds [fd].reify |= flags;
… …
803 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1089 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
804 fdchanges [fdchangecnt - 1] = fd; 1090 fdchanges [fdchangecnt - 1] = fd;
805 } 1091 }
806} 1092}
807 1093
1094/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
808inline_speed void 1095inline_speed void
809fd_kill (EV_P_ int fd) 1096fd_kill (EV_P_ int fd)
810{ 1097{
811 ev_io *w; 1098 ev_io *w;
812 1099
… …
815 ev_io_stop (EV_A_ w); 1102 ev_io_stop (EV_A_ w);
816 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1103 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
817 } 1104 }
818} 1105}
819 1106
1107/* check whether the given fd is actually valid, for error recovery */
820inline_size int 1108inline_size int
821fd_valid (int fd) 1109fd_valid (int fd)
822{ 1110{
823#ifdef _WIN32 1111#ifdef _WIN32
824 return _get_osfhandle (fd) != -1; 1112 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
825#else 1113#else
826 return fcntl (fd, F_GETFD) != -1; 1114 return fcntl (fd, F_GETFD) != -1;
827#endif 1115#endif
828} 1116}
829 1117
… …
847 1135
848 for (fd = anfdmax; fd--; ) 1136 for (fd = anfdmax; fd--; )
849 if (anfds [fd].events) 1137 if (anfds [fd].events)
850 { 1138 {
851 fd_kill (EV_A_ fd); 1139 fd_kill (EV_A_ fd);
852 return; 1140 break;
853 } 1141 }
854} 1142}
855 1143
856/* usually called after fork if backend needs to re-arm all fds from scratch */ 1144/* usually called after fork if backend needs to re-arm all fds from scratch */
857static void noinline 1145static void noinline
… …
862 for (fd = 0; fd < anfdmax; ++fd) 1150 for (fd = 0; fd < anfdmax; ++fd)
863 if (anfds [fd].events) 1151 if (anfds [fd].events)
864 { 1152 {
865 anfds [fd].events = 0; 1153 anfds [fd].events = 0;
866 anfds [fd].emask = 0; 1154 anfds [fd].emask = 0;
867 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1155 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
868 } 1156 }
869} 1157}
870 1158
1159/* used to prepare libev internal fd's */
1160/* this is not fork-safe */
1161inline_speed void
1162fd_intern (int fd)
1163{
1164#ifdef _WIN32
1165 unsigned long arg = 1;
1166 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1167#else
1168 fcntl (fd, F_SETFD, FD_CLOEXEC);
1169 fcntl (fd, F_SETFL, O_NONBLOCK);
1170#endif
1171}
1172
871/*****************************************************************************/ 1173/*****************************************************************************/
872 1174
873/* 1175/*
874 * the heap functions want a real array index. array index 0 uis guaranteed to not 1176 * the heap functions want a real array index. array index 0 is guaranteed to not
875 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1177 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
876 * the branching factor of the d-tree. 1178 * the branching factor of the d-tree.
877 */ 1179 */
878 1180
879/* 1181/*
… …
947 1249
948 for (;;) 1250 for (;;)
949 { 1251 {
950 int c = k << 1; 1252 int c = k << 1;
951 1253
952 if (c > N + HEAP0 - 1) 1254 if (c >= N + HEAP0)
953 break; 1255 break;
954 1256
955 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1257 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
956 ? 1 : 0; 1258 ? 1 : 0;
957 1259
… …
989 1291
990 heap [k] = he; 1292 heap [k] = he;
991 ev_active (ANHE_w (he)) = k; 1293 ev_active (ANHE_w (he)) = k;
992} 1294}
993 1295
1296/* move an element suitably so it is in a correct place */
994inline_size void 1297inline_size void
995adjustheap (ANHE *heap, int N, int k) 1298adjustheap (ANHE *heap, int N, int k)
996{ 1299{
997 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1300 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
998 upheap (heap, k); 1301 upheap (heap, k);
999 else 1302 else
1000 downheap (heap, N, k); 1303 downheap (heap, N, k);
1001} 1304}
1002 1305
… …
1012 upheap (heap, i + HEAP0); 1315 upheap (heap, i + HEAP0);
1013} 1316}
1014 1317
1015/*****************************************************************************/ 1318/*****************************************************************************/
1016 1319
1320/* associate signal watchers to a signal signal */
1017typedef struct 1321typedef struct
1018{ 1322{
1323 EV_ATOMIC_T pending;
1324#if EV_MULTIPLICITY
1325 EV_P;
1326#endif
1019 WL head; 1327 WL head;
1020 EV_ATOMIC_T gotsig;
1021} ANSIG; 1328} ANSIG;
1022 1329
1023static ANSIG *signals; 1330static ANSIG signals [EV_NSIG - 1];
1024static int signalmax;
1025
1026static EV_ATOMIC_T gotsig;
1027 1331
1028/*****************************************************************************/ 1332/*****************************************************************************/
1029 1333
1030inline_speed void 1334#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1031fd_intern (int fd)
1032{
1033#ifdef _WIN32
1034 unsigned long arg = 1;
1035 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1036#else
1037 fcntl (fd, F_SETFD, FD_CLOEXEC);
1038 fcntl (fd, F_SETFL, O_NONBLOCK);
1039#endif
1040}
1041 1335
1042static void noinline 1336static void noinline
1043evpipe_init (EV_P) 1337evpipe_init (EV_P)
1044{ 1338{
1045 if (!ev_is_active (&pipeev)) 1339 if (!ev_is_active (&pipe_w))
1046 { 1340 {
1047#if EV_USE_EVENTFD 1341# if EV_USE_EVENTFD
1342 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1343 if (evfd < 0 && errno == EINVAL)
1048 if ((evfd = eventfd (0, 0)) >= 0) 1344 evfd = eventfd (0, 0);
1345
1346 if (evfd >= 0)
1049 { 1347 {
1050 evpipe [0] = -1; 1348 evpipe [0] = -1;
1051 fd_intern (evfd); 1349 fd_intern (evfd); /* doing it twice doesn't hurt */
1052 ev_io_set (&pipeev, evfd, EV_READ); 1350 ev_io_set (&pipe_w, evfd, EV_READ);
1053 } 1351 }
1054 else 1352 else
1055#endif 1353# endif
1056 { 1354 {
1057 while (pipe (evpipe)) 1355 while (pipe (evpipe))
1058 ev_syserr ("(libev) error creating signal/async pipe"); 1356 ev_syserr ("(libev) error creating signal/async pipe");
1059 1357
1060 fd_intern (evpipe [0]); 1358 fd_intern (evpipe [0]);
1061 fd_intern (evpipe [1]); 1359 fd_intern (evpipe [1]);
1062 ev_io_set (&pipeev, evpipe [0], EV_READ); 1360 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1063 } 1361 }
1064 1362
1065 ev_io_start (EV_A_ &pipeev); 1363 ev_io_start (EV_A_ &pipe_w);
1066 ev_unref (EV_A); /* watcher should not keep loop alive */ 1364 ev_unref (EV_A); /* watcher should not keep loop alive */
1067 } 1365 }
1068} 1366}
1069 1367
1070inline_size void 1368inline_size void
1071evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1369evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1072{ 1370{
1073 if (!*flag) 1371 if (!*flag)
1074 { 1372 {
1075 int old_errno = errno; /* save errno because write might clobber it */ 1373 int old_errno = errno; /* save errno because write might clobber it */
1374 char dummy;
1076 1375
1077 *flag = 1; 1376 *flag = 1;
1078 1377
1079#if EV_USE_EVENTFD 1378#if EV_USE_EVENTFD
1080 if (evfd >= 0) 1379 if (evfd >= 0)
… …
1082 uint64_t counter = 1; 1381 uint64_t counter = 1;
1083 write (evfd, &counter, sizeof (uint64_t)); 1382 write (evfd, &counter, sizeof (uint64_t));
1084 } 1383 }
1085 else 1384 else
1086#endif 1385#endif
1386 /* win32 people keep sending patches that change this write() to send() */
1387 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1388 /* so when you think this write should be a send instead, please find out */
1389 /* where your send() is from - it's definitely not the microsoft send, and */
1390 /* tell me. thank you. */
1087 write (evpipe [1], &old_errno, 1); 1391 write (evpipe [1], &dummy, 1);
1088 1392
1089 errno = old_errno; 1393 errno = old_errno;
1090 } 1394 }
1091} 1395}
1092 1396
1397/* called whenever the libev signal pipe */
1398/* got some events (signal, async) */
1093static void 1399static void
1094pipecb (EV_P_ ev_io *iow, int revents) 1400pipecb (EV_P_ ev_io *iow, int revents)
1095{ 1401{
1402 int i;
1403
1096#if EV_USE_EVENTFD 1404#if EV_USE_EVENTFD
1097 if (evfd >= 0) 1405 if (evfd >= 0)
1098 { 1406 {
1099 uint64_t counter; 1407 uint64_t counter;
1100 read (evfd, &counter, sizeof (uint64_t)); 1408 read (evfd, &counter, sizeof (uint64_t));
1101 } 1409 }
1102 else 1410 else
1103#endif 1411#endif
1104 { 1412 {
1105 char dummy; 1413 char dummy;
1414 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1106 read (evpipe [0], &dummy, 1); 1415 read (evpipe [0], &dummy, 1);
1107 } 1416 }
1108 1417
1109 if (gotsig && ev_is_default_loop (EV_A)) 1418#if EV_SIGNAL_ENABLE
1110 { 1419 if (sig_pending)
1111 int signum; 1420 {
1112 gotsig = 0; 1421 sig_pending = 0;
1113 1422
1114 for (signum = signalmax; signum--; ) 1423 for (i = EV_NSIG - 1; i--; )
1115 if (signals [signum].gotsig) 1424 if (expect_false (signals [i].pending))
1116 ev_feed_signal_event (EV_A_ signum + 1); 1425 ev_feed_signal_event (EV_A_ i + 1);
1117 } 1426 }
1427#endif
1118 1428
1119#if EV_ASYNC_ENABLE 1429#if EV_ASYNC_ENABLE
1120 if (gotasync) 1430 if (async_pending)
1121 { 1431 {
1122 int i; 1432 async_pending = 0;
1123 gotasync = 0;
1124 1433
1125 for (i = asynccnt; i--; ) 1434 for (i = asynccnt; i--; )
1126 if (asyncs [i]->sent) 1435 if (asyncs [i]->sent)
1127 { 1436 {
1128 asyncs [i]->sent = 0; 1437 asyncs [i]->sent = 0;
… …
1132#endif 1441#endif
1133} 1442}
1134 1443
1135/*****************************************************************************/ 1444/*****************************************************************************/
1136 1445
1446void
1447ev_feed_signal (int signum)
1448{
1449#if EV_MULTIPLICITY
1450 EV_P = signals [signum - 1].loop;
1451
1452 if (!EV_A)
1453 return;
1454#endif
1455
1456 signals [signum - 1].pending = 1;
1457 evpipe_write (EV_A_ &sig_pending);
1458}
1459
1137static void 1460static void
1138ev_sighandler (int signum) 1461ev_sighandler (int signum)
1139{ 1462{
1140#if EV_MULTIPLICITY
1141 struct ev_loop *loop = &default_loop_struct;
1142#endif
1143
1144#if _WIN32 1463#ifdef _WIN32
1145 signal (signum, ev_sighandler); 1464 signal (signum, ev_sighandler);
1146#endif 1465#endif
1147 1466
1148 signals [signum - 1].gotsig = 1; 1467 ev_feed_signal (signum);
1149 evpipe_write (EV_A_ &gotsig);
1150} 1468}
1151 1469
1152void noinline 1470void noinline
1153ev_feed_signal_event (EV_P_ int signum) 1471ev_feed_signal_event (EV_P_ int signum)
1154{ 1472{
1155 WL w; 1473 WL w;
1156 1474
1475 if (expect_false (signum <= 0 || signum > EV_NSIG))
1476 return;
1477
1478 --signum;
1479
1157#if EV_MULTIPLICITY 1480#if EV_MULTIPLICITY
1158 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1481 /* it is permissible to try to feed a signal to the wrong loop */
1159#endif 1482 /* or, likely more useful, feeding a signal nobody is waiting for */
1160 1483
1161 --signum; 1484 if (expect_false (signals [signum].loop != EV_A))
1162
1163 if (signum < 0 || signum >= signalmax)
1164 return; 1485 return;
1486#endif
1165 1487
1166 signals [signum].gotsig = 0; 1488 signals [signum].pending = 0;
1167 1489
1168 for (w = signals [signum].head; w; w = w->next) 1490 for (w = signals [signum].head; w; w = w->next)
1169 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1491 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1170} 1492}
1171 1493
1494#if EV_USE_SIGNALFD
1495static void
1496sigfdcb (EV_P_ ev_io *iow, int revents)
1497{
1498 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1499
1500 for (;;)
1501 {
1502 ssize_t res = read (sigfd, si, sizeof (si));
1503
1504 /* not ISO-C, as res might be -1, but works with SuS */
1505 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1506 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1507
1508 if (res < (ssize_t)sizeof (si))
1509 break;
1510 }
1511}
1512#endif
1513
1514#endif
1515
1172/*****************************************************************************/ 1516/*****************************************************************************/
1173 1517
1518#if EV_CHILD_ENABLE
1174static WL childs [EV_PID_HASHSIZE]; 1519static WL childs [EV_PID_HASHSIZE];
1175
1176#ifndef _WIN32
1177 1520
1178static ev_signal childev; 1521static ev_signal childev;
1179 1522
1180#ifndef WIFCONTINUED 1523#ifndef WIFCONTINUED
1181# define WIFCONTINUED(status) 0 1524# define WIFCONTINUED(status) 0
1182#endif 1525#endif
1183 1526
1527/* handle a single child status event */
1184inline_speed void 1528inline_speed void
1185child_reap (EV_P_ int chain, int pid, int status) 1529child_reap (EV_P_ int chain, int pid, int status)
1186{ 1530{
1187 ev_child *w; 1531 ev_child *w;
1188 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1532 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1189 1533
1190 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1534 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1191 { 1535 {
1192 if ((w->pid == pid || !w->pid) 1536 if ((w->pid == pid || !w->pid)
1193 && (!traced || (w->flags & 1))) 1537 && (!traced || (w->flags & 1)))
1194 { 1538 {
1195 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1539 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1202 1546
1203#ifndef WCONTINUED 1547#ifndef WCONTINUED
1204# define WCONTINUED 0 1548# define WCONTINUED 0
1205#endif 1549#endif
1206 1550
1551/* called on sigchld etc., calls waitpid */
1207static void 1552static void
1208childcb (EV_P_ ev_signal *sw, int revents) 1553childcb (EV_P_ ev_signal *sw, int revents)
1209{ 1554{
1210 int pid, status; 1555 int pid, status;
1211 1556
… …
1219 /* make sure we are called again until all children have been reaped */ 1564 /* make sure we are called again until all children have been reaped */
1220 /* we need to do it this way so that the callback gets called before we continue */ 1565 /* we need to do it this way so that the callback gets called before we continue */
1221 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1566 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1222 1567
1223 child_reap (EV_A_ pid, pid, status); 1568 child_reap (EV_A_ pid, pid, status);
1224 if (EV_PID_HASHSIZE > 1) 1569 if ((EV_PID_HASHSIZE) > 1)
1225 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1570 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1226} 1571}
1227 1572
1228#endif 1573#endif
1229 1574
1230/*****************************************************************************/ 1575/*****************************************************************************/
1231 1576
1577#if EV_USE_IOCP
1578# include "ev_iocp.c"
1579#endif
1232#if EV_USE_PORT 1580#if EV_USE_PORT
1233# include "ev_port.c" 1581# include "ev_port.c"
1234#endif 1582#endif
1235#if EV_USE_KQUEUE 1583#if EV_USE_KQUEUE
1236# include "ev_kqueue.c" 1584# include "ev_kqueue.c"
… …
1296#ifdef __APPLE__ 1644#ifdef __APPLE__
1297 /* only select works correctly on that "unix-certified" platform */ 1645 /* only select works correctly on that "unix-certified" platform */
1298 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1646 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1299 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1647 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1300#endif 1648#endif
1649#ifdef __FreeBSD__
1650 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1651#endif
1301 1652
1302 return flags; 1653 return flags;
1303} 1654}
1304 1655
1305unsigned int 1656unsigned int
1306ev_embeddable_backends (void) 1657ev_embeddable_backends (void)
1307{ 1658{
1308 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1659 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1309 1660
1310 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1661 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1311 /* please fix it and tell me how to detect the fix */ 1662 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1312 flags &= ~EVBACKEND_EPOLL; 1663 flags &= ~EVBACKEND_EPOLL;
1313 1664
1314 return flags; 1665 return flags;
1315} 1666}
1316 1667
1317unsigned int 1668unsigned int
1318ev_backend (EV_P) 1669ev_backend (EV_P)
1319{ 1670{
1320 return backend; 1671 return backend;
1321} 1672}
1322 1673
1674#if EV_FEATURE_API
1323unsigned int 1675unsigned int
1324ev_loop_count (EV_P) 1676ev_iteration (EV_P)
1325{ 1677{
1326 return loop_count; 1678 return loop_count;
1327} 1679}
1328 1680
1681unsigned int
1682ev_depth (EV_P)
1683{
1684 return loop_depth;
1685}
1686
1329void 1687void
1330ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1688ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1331{ 1689{
1332 io_blocktime = interval; 1690 io_blocktime = interval;
1333} 1691}
… …
1336ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1694ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1337{ 1695{
1338 timeout_blocktime = interval; 1696 timeout_blocktime = interval;
1339} 1697}
1340 1698
1699void
1700ev_set_userdata (EV_P_ void *data)
1701{
1702 userdata = data;
1703}
1704
1705void *
1706ev_userdata (EV_P)
1707{
1708 return userdata;
1709}
1710
1711void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1712{
1713 invoke_cb = invoke_pending_cb;
1714}
1715
1716void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1717{
1718 release_cb = release;
1719 acquire_cb = acquire;
1720}
1721#endif
1722
1723/* initialise a loop structure, must be zero-initialised */
1341static void noinline 1724static void noinline
1342loop_init (EV_P_ unsigned int flags) 1725loop_init (EV_P_ unsigned int flags)
1343{ 1726{
1344 if (!backend) 1727 if (!backend)
1345 { 1728 {
1729 origflags = flags;
1730
1346#if EV_USE_REALTIME 1731#if EV_USE_REALTIME
1347 if (!have_realtime) 1732 if (!have_realtime)
1348 { 1733 {
1349 struct timespec ts; 1734 struct timespec ts;
1350 1735
… …
1361 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1746 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1362 have_monotonic = 1; 1747 have_monotonic = 1;
1363 } 1748 }
1364#endif 1749#endif
1365 1750
1751 /* pid check not overridable via env */
1752#ifndef _WIN32
1753 if (flags & EVFLAG_FORKCHECK)
1754 curpid = getpid ();
1755#endif
1756
1757 if (!(flags & EVFLAG_NOENV)
1758 && !enable_secure ()
1759 && getenv ("LIBEV_FLAGS"))
1760 flags = atoi (getenv ("LIBEV_FLAGS"));
1761
1366 ev_rt_now = ev_time (); 1762 ev_rt_now = ev_time ();
1367 mn_now = get_clock (); 1763 mn_now = get_clock ();
1368 now_floor = mn_now; 1764 now_floor = mn_now;
1369 rtmn_diff = ev_rt_now - mn_now; 1765 rtmn_diff = ev_rt_now - mn_now;
1766#if EV_FEATURE_API
1767 invoke_cb = ev_invoke_pending;
1768#endif
1370 1769
1371 io_blocktime = 0.; 1770 io_blocktime = 0.;
1372 timeout_blocktime = 0.; 1771 timeout_blocktime = 0.;
1373 backend = 0; 1772 backend = 0;
1374 backend_fd = -1; 1773 backend_fd = -1;
1375 gotasync = 0; 1774 sig_pending = 0;
1775#if EV_ASYNC_ENABLE
1776 async_pending = 0;
1777#endif
1376#if EV_USE_INOTIFY 1778#if EV_USE_INOTIFY
1377 fs_fd = -2; 1779 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1378#endif 1780#endif
1379 1781#if EV_USE_SIGNALFD
1380 /* pid check not overridable via env */ 1782 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1381#ifndef _WIN32
1382 if (flags & EVFLAG_FORKCHECK)
1383 curpid = getpid ();
1384#endif 1783#endif
1385 1784
1386 if (!(flags & EVFLAG_NOENV) 1785 if (!(flags & EVBACKEND_MASK))
1387 && !enable_secure ()
1388 && getenv ("LIBEV_FLAGS"))
1389 flags = atoi (getenv ("LIBEV_FLAGS"));
1390
1391 if (!(flags & 0x0000ffffU))
1392 flags |= ev_recommended_backends (); 1786 flags |= ev_recommended_backends ();
1393 1787
1788#if EV_USE_IOCP
1789 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1790#endif
1394#if EV_USE_PORT 1791#if EV_USE_PORT
1395 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1792 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1396#endif 1793#endif
1397#if EV_USE_KQUEUE 1794#if EV_USE_KQUEUE
1398 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1795 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1405#endif 1802#endif
1406#if EV_USE_SELECT 1803#if EV_USE_SELECT
1407 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1804 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1408#endif 1805#endif
1409 1806
1807 ev_prepare_init (&pending_w, pendingcb);
1808
1809#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1410 ev_init (&pipeev, pipecb); 1810 ev_init (&pipe_w, pipecb);
1411 ev_set_priority (&pipeev, EV_MAXPRI); 1811 ev_set_priority (&pipe_w, EV_MAXPRI);
1812#endif
1412 } 1813 }
1413} 1814}
1414 1815
1415static void noinline 1816/* free up a loop structure */
1817void
1416loop_destroy (EV_P) 1818ev_loop_destroy (EV_P)
1417{ 1819{
1418 int i; 1820 int i;
1419 1821
1822#if EV_MULTIPLICITY
1823 /* mimic free (0) */
1824 if (!EV_A)
1825 return;
1826#endif
1827
1828#if EV_CLEANUP_ENABLE
1829 /* queue cleanup watchers (and execute them) */
1830 if (expect_false (cleanupcnt))
1831 {
1832 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1833 EV_INVOKE_PENDING;
1834 }
1835#endif
1836
1837#if EV_CHILD_ENABLE
1838 if (ev_is_active (&childev))
1839 {
1840 ev_ref (EV_A); /* child watcher */
1841 ev_signal_stop (EV_A_ &childev);
1842 }
1843#endif
1844
1420 if (ev_is_active (&pipeev)) 1845 if (ev_is_active (&pipe_w))
1421 { 1846 {
1422 ev_ref (EV_A); /* signal watcher */ 1847 /*ev_ref (EV_A);*/
1423 ev_io_stop (EV_A_ &pipeev); 1848 /*ev_io_stop (EV_A_ &pipe_w);*/
1424 1849
1425#if EV_USE_EVENTFD 1850#if EV_USE_EVENTFD
1426 if (evfd >= 0) 1851 if (evfd >= 0)
1427 close (evfd); 1852 close (evfd);
1428#endif 1853#endif
1429 1854
1430 if (evpipe [0] >= 0) 1855 if (evpipe [0] >= 0)
1431 { 1856 {
1432 close (evpipe [0]); 1857 EV_WIN32_CLOSE_FD (evpipe [0]);
1433 close (evpipe [1]); 1858 EV_WIN32_CLOSE_FD (evpipe [1]);
1434 } 1859 }
1435 } 1860 }
1861
1862#if EV_USE_SIGNALFD
1863 if (ev_is_active (&sigfd_w))
1864 close (sigfd);
1865#endif
1436 1866
1437#if EV_USE_INOTIFY 1867#if EV_USE_INOTIFY
1438 if (fs_fd >= 0) 1868 if (fs_fd >= 0)
1439 close (fs_fd); 1869 close (fs_fd);
1440#endif 1870#endif
1441 1871
1442 if (backend_fd >= 0) 1872 if (backend_fd >= 0)
1443 close (backend_fd); 1873 close (backend_fd);
1444 1874
1875#if EV_USE_IOCP
1876 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1877#endif
1445#if EV_USE_PORT 1878#if EV_USE_PORT
1446 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1879 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1447#endif 1880#endif
1448#if EV_USE_KQUEUE 1881#if EV_USE_KQUEUE
1449 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1882 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1464#if EV_IDLE_ENABLE 1897#if EV_IDLE_ENABLE
1465 array_free (idle, [i]); 1898 array_free (idle, [i]);
1466#endif 1899#endif
1467 } 1900 }
1468 1901
1469 ev_free (anfds); anfdmax = 0; 1902 ev_free (anfds); anfds = 0; anfdmax = 0;
1470 1903
1471 /* have to use the microsoft-never-gets-it-right macro */ 1904 /* have to use the microsoft-never-gets-it-right macro */
1472 array_free (rfeed, EMPTY); 1905 array_free (rfeed, EMPTY);
1473 array_free (fdchange, EMPTY); 1906 array_free (fdchange, EMPTY);
1474 array_free (timer, EMPTY); 1907 array_free (timer, EMPTY);
… …
1476 array_free (periodic, EMPTY); 1909 array_free (periodic, EMPTY);
1477#endif 1910#endif
1478#if EV_FORK_ENABLE 1911#if EV_FORK_ENABLE
1479 array_free (fork, EMPTY); 1912 array_free (fork, EMPTY);
1480#endif 1913#endif
1914#if EV_CLEANUP_ENABLE
1915 array_free (cleanup, EMPTY);
1916#endif
1481 array_free (prepare, EMPTY); 1917 array_free (prepare, EMPTY);
1482 array_free (check, EMPTY); 1918 array_free (check, EMPTY);
1483#if EV_ASYNC_ENABLE 1919#if EV_ASYNC_ENABLE
1484 array_free (async, EMPTY); 1920 array_free (async, EMPTY);
1485#endif 1921#endif
1486 1922
1487 backend = 0; 1923 backend = 0;
1924
1925#if EV_MULTIPLICITY
1926 if (ev_is_default_loop (EV_A))
1927#endif
1928 ev_default_loop_ptr = 0;
1929#if EV_MULTIPLICITY
1930 else
1931 ev_free (EV_A);
1932#endif
1488} 1933}
1489 1934
1490#if EV_USE_INOTIFY 1935#if EV_USE_INOTIFY
1491inline_size void infy_fork (EV_P); 1936inline_size void infy_fork (EV_P);
1492#endif 1937#endif
… …
1505#endif 1950#endif
1506#if EV_USE_INOTIFY 1951#if EV_USE_INOTIFY
1507 infy_fork (EV_A); 1952 infy_fork (EV_A);
1508#endif 1953#endif
1509 1954
1510 if (ev_is_active (&pipeev)) 1955 if (ev_is_active (&pipe_w))
1511 { 1956 {
1512 /* this "locks" the handlers against writing to the pipe */ 1957 /* this "locks" the handlers against writing to the pipe */
1513 /* while we modify the fd vars */ 1958 /* while we modify the fd vars */
1514 gotsig = 1; 1959 sig_pending = 1;
1515#if EV_ASYNC_ENABLE 1960#if EV_ASYNC_ENABLE
1516 gotasync = 1; 1961 async_pending = 1;
1517#endif 1962#endif
1518 1963
1519 ev_ref (EV_A); 1964 ev_ref (EV_A);
1520 ev_io_stop (EV_A_ &pipeev); 1965 ev_io_stop (EV_A_ &pipe_w);
1521 1966
1522#if EV_USE_EVENTFD 1967#if EV_USE_EVENTFD
1523 if (evfd >= 0) 1968 if (evfd >= 0)
1524 close (evfd); 1969 close (evfd);
1525#endif 1970#endif
1526 1971
1527 if (evpipe [0] >= 0) 1972 if (evpipe [0] >= 0)
1528 { 1973 {
1529 close (evpipe [0]); 1974 EV_WIN32_CLOSE_FD (evpipe [0]);
1530 close (evpipe [1]); 1975 EV_WIN32_CLOSE_FD (evpipe [1]);
1531 } 1976 }
1532 1977
1978#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1533 evpipe_init (EV_A); 1979 evpipe_init (EV_A);
1534 /* now iterate over everything, in case we missed something */ 1980 /* now iterate over everything, in case we missed something */
1535 pipecb (EV_A_ &pipeev, EV_READ); 1981 pipecb (EV_A_ &pipe_w, EV_READ);
1982#endif
1536 } 1983 }
1537 1984
1538 postfork = 0; 1985 postfork = 0;
1539} 1986}
1540 1987
1541#if EV_MULTIPLICITY 1988#if EV_MULTIPLICITY
1542 1989
1543struct ev_loop * 1990struct ev_loop *
1544ev_loop_new (unsigned int flags) 1991ev_loop_new (unsigned int flags)
1545{ 1992{
1546 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1993 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1547 1994
1548 memset (loop, 0, sizeof (struct ev_loop)); 1995 memset (EV_A, 0, sizeof (struct ev_loop));
1549
1550 loop_init (EV_A_ flags); 1996 loop_init (EV_A_ flags);
1551 1997
1552 if (ev_backend (EV_A)) 1998 if (ev_backend (EV_A))
1553 return loop; 1999 return EV_A;
1554 2000
2001 ev_free (EV_A);
1555 return 0; 2002 return 0;
1556} 2003}
1557 2004
1558void 2005#endif /* multiplicity */
1559ev_loop_destroy (EV_P)
1560{
1561 loop_destroy (EV_A);
1562 ev_free (loop);
1563}
1564
1565void
1566ev_loop_fork (EV_P)
1567{
1568 postfork = 1; /* must be in line with ev_default_fork */
1569}
1570 2006
1571#if EV_VERIFY 2007#if EV_VERIFY
1572static void noinline 2008static void noinline
1573verify_watcher (EV_P_ W w) 2009verify_watcher (EV_P_ W w)
1574{ 2010{
… …
1602 verify_watcher (EV_A_ ws [cnt]); 2038 verify_watcher (EV_A_ ws [cnt]);
1603 } 2039 }
1604} 2040}
1605#endif 2041#endif
1606 2042
2043#if EV_FEATURE_API
1607void 2044void
1608ev_loop_verify (EV_P) 2045ev_verify (EV_P)
1609{ 2046{
1610#if EV_VERIFY 2047#if EV_VERIFY
1611 int i; 2048 int i;
1612 WL w; 2049 WL w;
1613 2050
… …
1647#if EV_FORK_ENABLE 2084#if EV_FORK_ENABLE
1648 assert (forkmax >= forkcnt); 2085 assert (forkmax >= forkcnt);
1649 array_verify (EV_A_ (W *)forks, forkcnt); 2086 array_verify (EV_A_ (W *)forks, forkcnt);
1650#endif 2087#endif
1651 2088
2089#if EV_CLEANUP_ENABLE
2090 assert (cleanupmax >= cleanupcnt);
2091 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2092#endif
2093
1652#if EV_ASYNC_ENABLE 2094#if EV_ASYNC_ENABLE
1653 assert (asyncmax >= asynccnt); 2095 assert (asyncmax >= asynccnt);
1654 array_verify (EV_A_ (W *)asyncs, asynccnt); 2096 array_verify (EV_A_ (W *)asyncs, asynccnt);
1655#endif 2097#endif
1656 2098
2099#if EV_PREPARE_ENABLE
1657 assert (preparemax >= preparecnt); 2100 assert (preparemax >= preparecnt);
1658 array_verify (EV_A_ (W *)prepares, preparecnt); 2101 array_verify (EV_A_ (W *)prepares, preparecnt);
2102#endif
1659 2103
2104#if EV_CHECK_ENABLE
1660 assert (checkmax >= checkcnt); 2105 assert (checkmax >= checkcnt);
1661 array_verify (EV_A_ (W *)checks, checkcnt); 2106 array_verify (EV_A_ (W *)checks, checkcnt);
2107#endif
1662 2108
1663# if 0 2109# if 0
2110#if EV_CHILD_ENABLE
1664 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2111 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1665 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2112 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2113#endif
1666# endif 2114# endif
1667#endif 2115#endif
1668} 2116}
1669 2117#endif
1670#endif /* multiplicity */
1671 2118
1672#if EV_MULTIPLICITY 2119#if EV_MULTIPLICITY
1673struct ev_loop * 2120struct ev_loop *
1674ev_default_loop_init (unsigned int flags)
1675#else 2121#else
1676int 2122int
2123#endif
1677ev_default_loop (unsigned int flags) 2124ev_default_loop (unsigned int flags)
1678#endif
1679{ 2125{
1680 if (!ev_default_loop_ptr) 2126 if (!ev_default_loop_ptr)
1681 { 2127 {
1682#if EV_MULTIPLICITY 2128#if EV_MULTIPLICITY
1683 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2129 EV_P = ev_default_loop_ptr = &default_loop_struct;
1684#else 2130#else
1685 ev_default_loop_ptr = 1; 2131 ev_default_loop_ptr = 1;
1686#endif 2132#endif
1687 2133
1688 loop_init (EV_A_ flags); 2134 loop_init (EV_A_ flags);
1689 2135
1690 if (ev_backend (EV_A)) 2136 if (ev_backend (EV_A))
1691 { 2137 {
1692#ifndef _WIN32 2138#if EV_CHILD_ENABLE
1693 ev_signal_init (&childev, childcb, SIGCHLD); 2139 ev_signal_init (&childev, childcb, SIGCHLD);
1694 ev_set_priority (&childev, EV_MAXPRI); 2140 ev_set_priority (&childev, EV_MAXPRI);
1695 ev_signal_start (EV_A_ &childev); 2141 ev_signal_start (EV_A_ &childev);
1696 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2142 ev_unref (EV_A); /* child watcher should not keep loop alive */
1697#endif 2143#endif
… …
1702 2148
1703 return ev_default_loop_ptr; 2149 return ev_default_loop_ptr;
1704} 2150}
1705 2151
1706void 2152void
1707ev_default_destroy (void) 2153ev_loop_fork (EV_P)
1708{ 2154{
1709#if EV_MULTIPLICITY
1710 struct ev_loop *loop = ev_default_loop_ptr;
1711#endif
1712
1713 ev_default_loop_ptr = 0;
1714
1715#ifndef _WIN32
1716 ev_ref (EV_A); /* child watcher */
1717 ev_signal_stop (EV_A_ &childev);
1718#endif
1719
1720 loop_destroy (EV_A);
1721}
1722
1723void
1724ev_default_fork (void)
1725{
1726#if EV_MULTIPLICITY
1727 struct ev_loop *loop = ev_default_loop_ptr;
1728#endif
1729
1730 postfork = 1; /* must be in line with ev_loop_fork */ 2155 postfork = 1; /* must be in line with ev_default_fork */
1731} 2156}
1732 2157
1733/*****************************************************************************/ 2158/*****************************************************************************/
1734 2159
1735void 2160void
1736ev_invoke (EV_P_ void *w, int revents) 2161ev_invoke (EV_P_ void *w, int revents)
1737{ 2162{
1738 EV_CB_INVOKE ((W)w, revents); 2163 EV_CB_INVOKE ((W)w, revents);
1739} 2164}
1740 2165
1741inline_speed void 2166unsigned int
1742call_pending (EV_P) 2167ev_pending_count (EV_P)
2168{
2169 int pri;
2170 unsigned int count = 0;
2171
2172 for (pri = NUMPRI; pri--; )
2173 count += pendingcnt [pri];
2174
2175 return count;
2176}
2177
2178void noinline
2179ev_invoke_pending (EV_P)
1743{ 2180{
1744 int pri; 2181 int pri;
1745 2182
1746 for (pri = NUMPRI; pri--; ) 2183 for (pri = NUMPRI; pri--; )
1747 while (pendingcnt [pri]) 2184 while (pendingcnt [pri])
1748 { 2185 {
1749 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2186 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1750 2187
1751 if (expect_true (p->w))
1752 {
1753 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1754
1755 p->w->pending = 0; 2188 p->w->pending = 0;
1756 EV_CB_INVOKE (p->w, p->events); 2189 EV_CB_INVOKE (p->w, p->events);
1757 EV_FREQUENT_CHECK; 2190 EV_FREQUENT_CHECK;
1758 }
1759 } 2191 }
1760} 2192}
1761 2193
1762#if EV_IDLE_ENABLE 2194#if EV_IDLE_ENABLE
2195/* make idle watchers pending. this handles the "call-idle */
2196/* only when higher priorities are idle" logic */
1763inline_size void 2197inline_size void
1764idle_reify (EV_P) 2198idle_reify (EV_P)
1765{ 2199{
1766 if (expect_false (idleall)) 2200 if (expect_false (idleall))
1767 { 2201 {
… …
1780 } 2214 }
1781 } 2215 }
1782} 2216}
1783#endif 2217#endif
1784 2218
2219/* make timers pending */
1785inline_size void 2220inline_size void
1786timers_reify (EV_P) 2221timers_reify (EV_P)
1787{ 2222{
1788 EV_FREQUENT_CHECK; 2223 EV_FREQUENT_CHECK;
1789 2224
… …
1813 EV_FREQUENT_CHECK; 2248 EV_FREQUENT_CHECK;
1814 feed_reverse (EV_A_ (W)w); 2249 feed_reverse (EV_A_ (W)w);
1815 } 2250 }
1816 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2251 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1817 2252
1818 feed_reverse_done (EV_A_ EV_TIMEOUT); 2253 feed_reverse_done (EV_A_ EV_TIMER);
1819 } 2254 }
1820} 2255}
1821 2256
1822#if EV_PERIODIC_ENABLE 2257#if EV_PERIODIC_ENABLE
2258
2259static void noinline
2260periodic_recalc (EV_P_ ev_periodic *w)
2261{
2262 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2263 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2264
2265 /* the above almost always errs on the low side */
2266 while (at <= ev_rt_now)
2267 {
2268 ev_tstamp nat = at + w->interval;
2269
2270 /* when resolution fails us, we use ev_rt_now */
2271 if (expect_false (nat == at))
2272 {
2273 at = ev_rt_now;
2274 break;
2275 }
2276
2277 at = nat;
2278 }
2279
2280 ev_at (w) = at;
2281}
2282
2283/* make periodics pending */
1823inline_size void 2284inline_size void
1824periodics_reify (EV_P) 2285periodics_reify (EV_P)
1825{ 2286{
1826 EV_FREQUENT_CHECK; 2287 EV_FREQUENT_CHECK;
1827 2288
… …
1845 ANHE_at_cache (periodics [HEAP0]); 2306 ANHE_at_cache (periodics [HEAP0]);
1846 downheap (periodics, periodiccnt, HEAP0); 2307 downheap (periodics, periodiccnt, HEAP0);
1847 } 2308 }
1848 else if (w->interval) 2309 else if (w->interval)
1849 { 2310 {
1850 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2311 periodic_recalc (EV_A_ w);
1851 /* if next trigger time is not sufficiently in the future, put it there */
1852 /* this might happen because of floating point inexactness */
1853 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1854 {
1855 ev_at (w) += w->interval;
1856
1857 /* if interval is unreasonably low we might still have a time in the past */
1858 /* so correct this. this will make the periodic very inexact, but the user */
1859 /* has effectively asked to get triggered more often than possible */
1860 if (ev_at (w) < ev_rt_now)
1861 ev_at (w) = ev_rt_now;
1862 }
1863
1864 ANHE_at_cache (periodics [HEAP0]); 2312 ANHE_at_cache (periodics [HEAP0]);
1865 downheap (periodics, periodiccnt, HEAP0); 2313 downheap (periodics, periodiccnt, HEAP0);
1866 } 2314 }
1867 else 2315 else
1868 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2316 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1874 2322
1875 feed_reverse_done (EV_A_ EV_PERIODIC); 2323 feed_reverse_done (EV_A_ EV_PERIODIC);
1876 } 2324 }
1877} 2325}
1878 2326
2327/* simply recalculate all periodics */
2328/* TODO: maybe ensure that at least one event happens when jumping forward? */
1879static void noinline 2329static void noinline
1880periodics_reschedule (EV_P) 2330periodics_reschedule (EV_P)
1881{ 2331{
1882 int i; 2332 int i;
1883 2333
… …
1887 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2337 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1888 2338
1889 if (w->reschedule_cb) 2339 if (w->reschedule_cb)
1890 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2340 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1891 else if (w->interval) 2341 else if (w->interval)
1892 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2342 periodic_recalc (EV_A_ w);
1893 2343
1894 ANHE_at_cache (periodics [i]); 2344 ANHE_at_cache (periodics [i]);
1895 } 2345 }
1896 2346
1897 reheap (periodics, periodiccnt); 2347 reheap (periodics, periodiccnt);
1898} 2348}
1899#endif 2349#endif
1900 2350
2351/* adjust all timers by a given offset */
2352static void noinline
2353timers_reschedule (EV_P_ ev_tstamp adjust)
2354{
2355 int i;
2356
2357 for (i = 0; i < timercnt; ++i)
2358 {
2359 ANHE *he = timers + i + HEAP0;
2360 ANHE_w (*he)->at += adjust;
2361 ANHE_at_cache (*he);
2362 }
2363}
2364
2365/* fetch new monotonic and realtime times from the kernel */
2366/* also detect if there was a timejump, and act accordingly */
1901inline_speed void 2367inline_speed void
1902time_update (EV_P_ ev_tstamp max_block) 2368time_update (EV_P_ ev_tstamp max_block)
1903{ 2369{
1904 int i;
1905
1906#if EV_USE_MONOTONIC 2370#if EV_USE_MONOTONIC
1907 if (expect_true (have_monotonic)) 2371 if (expect_true (have_monotonic))
1908 { 2372 {
2373 int i;
1909 ev_tstamp odiff = rtmn_diff; 2374 ev_tstamp odiff = rtmn_diff;
1910 2375
1911 mn_now = get_clock (); 2376 mn_now = get_clock ();
1912 2377
1913 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2378 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1929 * doesn't hurt either as we only do this on time-jumps or 2394 * doesn't hurt either as we only do this on time-jumps or
1930 * in the unlikely event of having been preempted here. 2395 * in the unlikely event of having been preempted here.
1931 */ 2396 */
1932 for (i = 4; --i; ) 2397 for (i = 4; --i; )
1933 { 2398 {
2399 ev_tstamp diff;
1934 rtmn_diff = ev_rt_now - mn_now; 2400 rtmn_diff = ev_rt_now - mn_now;
1935 2401
2402 diff = odiff - rtmn_diff;
2403
1936 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2404 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1937 return; /* all is well */ 2405 return; /* all is well */
1938 2406
1939 ev_rt_now = ev_time (); 2407 ev_rt_now = ev_time ();
1940 mn_now = get_clock (); 2408 mn_now = get_clock ();
1941 now_floor = mn_now; 2409 now_floor = mn_now;
1942 } 2410 }
1943 2411
2412 /* no timer adjustment, as the monotonic clock doesn't jump */
2413 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1944# if EV_PERIODIC_ENABLE 2414# if EV_PERIODIC_ENABLE
1945 periodics_reschedule (EV_A); 2415 periodics_reschedule (EV_A);
1946# endif 2416# endif
1947 /* no timer adjustment, as the monotonic clock doesn't jump */
1948 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1949 } 2417 }
1950 else 2418 else
1951#endif 2419#endif
1952 { 2420 {
1953 ev_rt_now = ev_time (); 2421 ev_rt_now = ev_time ();
1954 2422
1955 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2423 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1956 { 2424 {
2425 /* adjust timers. this is easy, as the offset is the same for all of them */
2426 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1957#if EV_PERIODIC_ENABLE 2427#if EV_PERIODIC_ENABLE
1958 periodics_reschedule (EV_A); 2428 periodics_reschedule (EV_A);
1959#endif 2429#endif
1960 /* adjust timers. this is easy, as the offset is the same for all of them */
1961 for (i = 0; i < timercnt; ++i)
1962 {
1963 ANHE *he = timers + i + HEAP0;
1964 ANHE_w (*he)->at += ev_rt_now - mn_now;
1965 ANHE_at_cache (*he);
1966 }
1967 } 2430 }
1968 2431
1969 mn_now = ev_rt_now; 2432 mn_now = ev_rt_now;
1970 } 2433 }
1971} 2434}
1972 2435
1973void 2436void
1974ev_ref (EV_P)
1975{
1976 ++activecnt;
1977}
1978
1979void
1980ev_unref (EV_P)
1981{
1982 --activecnt;
1983}
1984
1985void
1986ev_now_update (EV_P)
1987{
1988 time_update (EV_A_ 1e100);
1989}
1990
1991static int loop_done;
1992
1993void
1994ev_loop (EV_P_ int flags) 2437ev_run (EV_P_ int flags)
1995{ 2438{
2439#if EV_FEATURE_API
2440 ++loop_depth;
2441#endif
2442
2443 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2444
1996 loop_done = EVUNLOOP_CANCEL; 2445 loop_done = EVBREAK_CANCEL;
1997 2446
1998 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2447 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1999 2448
2000 do 2449 do
2001 { 2450 {
2002#if EV_VERIFY >= 2 2451#if EV_VERIFY >= 2
2003 ev_loop_verify (EV_A); 2452 ev_verify (EV_A);
2004#endif 2453#endif
2005 2454
2006#ifndef _WIN32 2455#ifndef _WIN32
2007 if (expect_false (curpid)) /* penalise the forking check even more */ 2456 if (expect_false (curpid)) /* penalise the forking check even more */
2008 if (expect_false (getpid () != curpid)) 2457 if (expect_false (getpid () != curpid))
… …
2016 /* we might have forked, so queue fork handlers */ 2465 /* we might have forked, so queue fork handlers */
2017 if (expect_false (postfork)) 2466 if (expect_false (postfork))
2018 if (forkcnt) 2467 if (forkcnt)
2019 { 2468 {
2020 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2469 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2021 call_pending (EV_A); 2470 EV_INVOKE_PENDING;
2022 } 2471 }
2023#endif 2472#endif
2024 2473
2474#if EV_PREPARE_ENABLE
2025 /* queue prepare watchers (and execute them) */ 2475 /* queue prepare watchers (and execute them) */
2026 if (expect_false (preparecnt)) 2476 if (expect_false (preparecnt))
2027 { 2477 {
2028 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2478 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2029 call_pending (EV_A); 2479 EV_INVOKE_PENDING;
2030 } 2480 }
2481#endif
2482
2483 if (expect_false (loop_done))
2484 break;
2031 2485
2032 /* we might have forked, so reify kernel state if necessary */ 2486 /* we might have forked, so reify kernel state if necessary */
2033 if (expect_false (postfork)) 2487 if (expect_false (postfork))
2034 loop_fork (EV_A); 2488 loop_fork (EV_A);
2035 2489
… …
2039 /* calculate blocking time */ 2493 /* calculate blocking time */
2040 { 2494 {
2041 ev_tstamp waittime = 0.; 2495 ev_tstamp waittime = 0.;
2042 ev_tstamp sleeptime = 0.; 2496 ev_tstamp sleeptime = 0.;
2043 2497
2498 /* remember old timestamp for io_blocktime calculation */
2499 ev_tstamp prev_mn_now = mn_now;
2500
2501 /* update time to cancel out callback processing overhead */
2502 time_update (EV_A_ 1e100);
2503
2044 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2504 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
2045 { 2505 {
2046 /* update time to cancel out callback processing overhead */ 2506 waittime = MAX_BLOCKTIME;
2047 time_update (EV_A_ 1e100);
2048 2507
2049 if (timercnt) 2508 if (timercnt)
2050 { 2509 {
2051 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2510 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
2052 if (waittime > to) waittime = to; 2511 if (waittime > to) waittime = to;
… …
2058 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2517 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2059 if (waittime > to) waittime = to; 2518 if (waittime > to) waittime = to;
2060 } 2519 }
2061#endif 2520#endif
2062 2521
2522 /* don't let timeouts decrease the waittime below timeout_blocktime */
2063 if (expect_false (waittime < timeout_blocktime)) 2523 if (expect_false (waittime < timeout_blocktime))
2064 waittime = timeout_blocktime; 2524 waittime = timeout_blocktime;
2065 2525
2066 sleeptime = waittime - backend_fudge; 2526 /* extra check because io_blocktime is commonly 0 */
2067
2068 if (expect_true (sleeptime > io_blocktime)) 2527 if (expect_false (io_blocktime))
2069 sleeptime = io_blocktime;
2070
2071 if (sleeptime)
2072 { 2528 {
2529 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2530
2531 if (sleeptime > waittime - backend_fudge)
2532 sleeptime = waittime - backend_fudge;
2533
2534 if (expect_true (sleeptime > 0.))
2535 {
2073 ev_sleep (sleeptime); 2536 ev_sleep (sleeptime);
2074 waittime -= sleeptime; 2537 waittime -= sleeptime;
2538 }
2075 } 2539 }
2076 } 2540 }
2077 2541
2542#if EV_FEATURE_API
2078 ++loop_count; 2543 ++loop_count;
2544#endif
2545 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2079 backend_poll (EV_A_ waittime); 2546 backend_poll (EV_A_ waittime);
2547 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2080 2548
2081 /* update ev_rt_now, do magic */ 2549 /* update ev_rt_now, do magic */
2082 time_update (EV_A_ waittime + sleeptime); 2550 time_update (EV_A_ waittime + sleeptime);
2083 } 2551 }
2084 2552
… …
2091#if EV_IDLE_ENABLE 2559#if EV_IDLE_ENABLE
2092 /* queue idle watchers unless other events are pending */ 2560 /* queue idle watchers unless other events are pending */
2093 idle_reify (EV_A); 2561 idle_reify (EV_A);
2094#endif 2562#endif
2095 2563
2564#if EV_CHECK_ENABLE
2096 /* queue check watchers, to be executed first */ 2565 /* queue check watchers, to be executed first */
2097 if (expect_false (checkcnt)) 2566 if (expect_false (checkcnt))
2098 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2567 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2568#endif
2099 2569
2100 call_pending (EV_A); 2570 EV_INVOKE_PENDING;
2101 } 2571 }
2102 while (expect_true ( 2572 while (expect_true (
2103 activecnt 2573 activecnt
2104 && !loop_done 2574 && !loop_done
2105 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2575 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2106 )); 2576 ));
2107 2577
2108 if (loop_done == EVUNLOOP_ONE) 2578 if (loop_done == EVBREAK_ONE)
2109 loop_done = EVUNLOOP_CANCEL; 2579 loop_done = EVBREAK_CANCEL;
2110}
2111 2580
2581#if EV_FEATURE_API
2582 --loop_depth;
2583#endif
2584}
2585
2112void 2586void
2113ev_unloop (EV_P_ int how) 2587ev_break (EV_P_ int how)
2114{ 2588{
2115 loop_done = how; 2589 loop_done = how;
2116} 2590}
2117 2591
2592void
2593ev_ref (EV_P)
2594{
2595 ++activecnt;
2596}
2597
2598void
2599ev_unref (EV_P)
2600{
2601 --activecnt;
2602}
2603
2604void
2605ev_now_update (EV_P)
2606{
2607 time_update (EV_A_ 1e100);
2608}
2609
2610void
2611ev_suspend (EV_P)
2612{
2613 ev_now_update (EV_A);
2614}
2615
2616void
2617ev_resume (EV_P)
2618{
2619 ev_tstamp mn_prev = mn_now;
2620
2621 ev_now_update (EV_A);
2622 timers_reschedule (EV_A_ mn_now - mn_prev);
2623#if EV_PERIODIC_ENABLE
2624 /* TODO: really do this? */
2625 periodics_reschedule (EV_A);
2626#endif
2627}
2628
2118/*****************************************************************************/ 2629/*****************************************************************************/
2630/* singly-linked list management, used when the expected list length is short */
2119 2631
2120inline_size void 2632inline_size void
2121wlist_add (WL *head, WL elem) 2633wlist_add (WL *head, WL elem)
2122{ 2634{
2123 elem->next = *head; 2635 elem->next = *head;
… …
2127inline_size void 2639inline_size void
2128wlist_del (WL *head, WL elem) 2640wlist_del (WL *head, WL elem)
2129{ 2641{
2130 while (*head) 2642 while (*head)
2131 { 2643 {
2132 if (*head == elem) 2644 if (expect_true (*head == elem))
2133 { 2645 {
2134 *head = elem->next; 2646 *head = elem->next;
2135 return; 2647 break;
2136 } 2648 }
2137 2649
2138 head = &(*head)->next; 2650 head = &(*head)->next;
2139 } 2651 }
2140} 2652}
2141 2653
2654/* internal, faster, version of ev_clear_pending */
2142inline_speed void 2655inline_speed void
2143clear_pending (EV_P_ W w) 2656clear_pending (EV_P_ W w)
2144{ 2657{
2145 if (w->pending) 2658 if (w->pending)
2146 { 2659 {
2147 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2660 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2148 w->pending = 0; 2661 w->pending = 0;
2149 } 2662 }
2150} 2663}
2151 2664
2152int 2665int
… …
2156 int pending = w_->pending; 2669 int pending = w_->pending;
2157 2670
2158 if (expect_true (pending)) 2671 if (expect_true (pending))
2159 { 2672 {
2160 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2673 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2674 p->w = (W)&pending_w;
2161 w_->pending = 0; 2675 w_->pending = 0;
2162 p->w = 0;
2163 return p->events; 2676 return p->events;
2164 } 2677 }
2165 else 2678 else
2166 return 0; 2679 return 0;
2167} 2680}
2168 2681
2169inline_size void 2682inline_size void
2170pri_adjust (EV_P_ W w) 2683pri_adjust (EV_P_ W w)
2171{ 2684{
2172 int pri = w->priority; 2685 int pri = ev_priority (w);
2173 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2686 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2174 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2687 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2175 w->priority = pri; 2688 ev_set_priority (w, pri);
2176} 2689}
2177 2690
2178inline_speed void 2691inline_speed void
2179ev_start (EV_P_ W w, int active) 2692ev_start (EV_P_ W w, int active)
2180{ 2693{
… …
2199 2712
2200 if (expect_false (ev_is_active (w))) 2713 if (expect_false (ev_is_active (w)))
2201 return; 2714 return;
2202 2715
2203 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2716 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2204 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2717 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2205 2718
2206 EV_FREQUENT_CHECK; 2719 EV_FREQUENT_CHECK;
2207 2720
2208 ev_start (EV_A_ (W)w, 1); 2721 ev_start (EV_A_ (W)w, 1);
2209 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2722 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2210 wlist_add (&anfds[fd].head, (WL)w); 2723 wlist_add (&anfds[fd].head, (WL)w);
2211 2724
2212 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 2725 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2213 w->events &= ~EV__IOFDSET; 2726 w->events &= ~EV__IOFDSET;
2214 2727
2215 EV_FREQUENT_CHECK; 2728 EV_FREQUENT_CHECK;
2216} 2729}
2217 2730
… …
2227 EV_FREQUENT_CHECK; 2740 EV_FREQUENT_CHECK;
2228 2741
2229 wlist_del (&anfds[w->fd].head, (WL)w); 2742 wlist_del (&anfds[w->fd].head, (WL)w);
2230 ev_stop (EV_A_ (W)w); 2743 ev_stop (EV_A_ (W)w);
2231 2744
2232 fd_change (EV_A_ w->fd, 1); 2745 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2233 2746
2234 EV_FREQUENT_CHECK; 2747 EV_FREQUENT_CHECK;
2235} 2748}
2236 2749
2237void noinline 2750void noinline
… …
2279 timers [active] = timers [timercnt + HEAP0]; 2792 timers [active] = timers [timercnt + HEAP0];
2280 adjustheap (timers, timercnt, active); 2793 adjustheap (timers, timercnt, active);
2281 } 2794 }
2282 } 2795 }
2283 2796
2284 EV_FREQUENT_CHECK;
2285
2286 ev_at (w) -= mn_now; 2797 ev_at (w) -= mn_now;
2287 2798
2288 ev_stop (EV_A_ (W)w); 2799 ev_stop (EV_A_ (W)w);
2800
2801 EV_FREQUENT_CHECK;
2289} 2802}
2290 2803
2291void noinline 2804void noinline
2292ev_timer_again (EV_P_ ev_timer *w) 2805ev_timer_again (EV_P_ ev_timer *w)
2293{ 2806{
… …
2311 } 2824 }
2312 2825
2313 EV_FREQUENT_CHECK; 2826 EV_FREQUENT_CHECK;
2314} 2827}
2315 2828
2829ev_tstamp
2830ev_timer_remaining (EV_P_ ev_timer *w)
2831{
2832 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2833}
2834
2316#if EV_PERIODIC_ENABLE 2835#if EV_PERIODIC_ENABLE
2317void noinline 2836void noinline
2318ev_periodic_start (EV_P_ ev_periodic *w) 2837ev_periodic_start (EV_P_ ev_periodic *w)
2319{ 2838{
2320 if (expect_false (ev_is_active (w))) 2839 if (expect_false (ev_is_active (w)))
… …
2323 if (w->reschedule_cb) 2842 if (w->reschedule_cb)
2324 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2843 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2325 else if (w->interval) 2844 else if (w->interval)
2326 { 2845 {
2327 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2846 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2328 /* this formula differs from the one in periodic_reify because we do not always round up */ 2847 periodic_recalc (EV_A_ w);
2329 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2330 } 2848 }
2331 else 2849 else
2332 ev_at (w) = w->offset; 2850 ev_at (w) = w->offset;
2333 2851
2334 EV_FREQUENT_CHECK; 2852 EV_FREQUENT_CHECK;
… …
2366 periodics [active] = periodics [periodiccnt + HEAP0]; 2884 periodics [active] = periodics [periodiccnt + HEAP0];
2367 adjustheap (periodics, periodiccnt, active); 2885 adjustheap (periodics, periodiccnt, active);
2368 } 2886 }
2369 } 2887 }
2370 2888
2371 EV_FREQUENT_CHECK;
2372
2373 ev_stop (EV_A_ (W)w); 2889 ev_stop (EV_A_ (W)w);
2890
2891 EV_FREQUENT_CHECK;
2374} 2892}
2375 2893
2376void noinline 2894void noinline
2377ev_periodic_again (EV_P_ ev_periodic *w) 2895ev_periodic_again (EV_P_ ev_periodic *w)
2378{ 2896{
… …
2384 2902
2385#ifndef SA_RESTART 2903#ifndef SA_RESTART
2386# define SA_RESTART 0 2904# define SA_RESTART 0
2387#endif 2905#endif
2388 2906
2907#if EV_SIGNAL_ENABLE
2908
2389void noinline 2909void noinline
2390ev_signal_start (EV_P_ ev_signal *w) 2910ev_signal_start (EV_P_ ev_signal *w)
2391{ 2911{
2392#if EV_MULTIPLICITY
2393 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2394#endif
2395 if (expect_false (ev_is_active (w))) 2912 if (expect_false (ev_is_active (w)))
2396 return; 2913 return;
2397 2914
2398 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 2915 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2399 2916
2400 evpipe_init (EV_A); 2917#if EV_MULTIPLICITY
2918 assert (("libev: a signal must not be attached to two different loops",
2919 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2401 2920
2402 EV_FREQUENT_CHECK; 2921 signals [w->signum - 1].loop = EV_A;
2922#endif
2403 2923
2924 EV_FREQUENT_CHECK;
2925
2926#if EV_USE_SIGNALFD
2927 if (sigfd == -2)
2404 { 2928 {
2405#ifndef _WIN32 2929 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2406 sigset_t full, prev; 2930 if (sigfd < 0 && errno == EINVAL)
2407 sigfillset (&full); 2931 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2408 sigprocmask (SIG_SETMASK, &full, &prev);
2409#endif
2410 2932
2411 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2933 if (sigfd >= 0)
2934 {
2935 fd_intern (sigfd); /* doing it twice will not hurt */
2412 2936
2413#ifndef _WIN32 2937 sigemptyset (&sigfd_set);
2414 sigprocmask (SIG_SETMASK, &prev, 0); 2938
2415#endif 2939 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2940 ev_set_priority (&sigfd_w, EV_MAXPRI);
2941 ev_io_start (EV_A_ &sigfd_w);
2942 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2943 }
2416 } 2944 }
2945
2946 if (sigfd >= 0)
2947 {
2948 /* TODO: check .head */
2949 sigaddset (&sigfd_set, w->signum);
2950 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2951
2952 signalfd (sigfd, &sigfd_set, 0);
2953 }
2954#endif
2417 2955
2418 ev_start (EV_A_ (W)w, 1); 2956 ev_start (EV_A_ (W)w, 1);
2419 wlist_add (&signals [w->signum - 1].head, (WL)w); 2957 wlist_add (&signals [w->signum - 1].head, (WL)w);
2420 2958
2421 if (!((WL)w)->next) 2959 if (!((WL)w)->next)
2960# if EV_USE_SIGNALFD
2961 if (sigfd < 0) /*TODO*/
2962# endif
2422 { 2963 {
2423#if _WIN32 2964# ifdef _WIN32
2965 evpipe_init (EV_A);
2966
2424 signal (w->signum, ev_sighandler); 2967 signal (w->signum, ev_sighandler);
2425#else 2968# else
2426 struct sigaction sa; 2969 struct sigaction sa;
2970
2971 evpipe_init (EV_A);
2972
2427 sa.sa_handler = ev_sighandler; 2973 sa.sa_handler = ev_sighandler;
2428 sigfillset (&sa.sa_mask); 2974 sigfillset (&sa.sa_mask);
2429 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2975 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2430 sigaction (w->signum, &sa, 0); 2976 sigaction (w->signum, &sa, 0);
2977
2978 if (origflags & EVFLAG_NOSIGMASK)
2979 {
2980 sigemptyset (&sa.sa_mask);
2981 sigaddset (&sa.sa_mask, w->signum);
2982 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2983 }
2431#endif 2984#endif
2432 } 2985 }
2433 2986
2434 EV_FREQUENT_CHECK; 2987 EV_FREQUENT_CHECK;
2435} 2988}
2436 2989
2437void noinline 2990void noinline
… …
2445 2998
2446 wlist_del (&signals [w->signum - 1].head, (WL)w); 2999 wlist_del (&signals [w->signum - 1].head, (WL)w);
2447 ev_stop (EV_A_ (W)w); 3000 ev_stop (EV_A_ (W)w);
2448 3001
2449 if (!signals [w->signum - 1].head) 3002 if (!signals [w->signum - 1].head)
3003 {
3004#if EV_MULTIPLICITY
3005 signals [w->signum - 1].loop = 0; /* unattach from signal */
3006#endif
3007#if EV_USE_SIGNALFD
3008 if (sigfd >= 0)
3009 {
3010 sigset_t ss;
3011
3012 sigemptyset (&ss);
3013 sigaddset (&ss, w->signum);
3014 sigdelset (&sigfd_set, w->signum);
3015
3016 signalfd (sigfd, &sigfd_set, 0);
3017 sigprocmask (SIG_UNBLOCK, &ss, 0);
3018 }
3019 else
3020#endif
2450 signal (w->signum, SIG_DFL); 3021 signal (w->signum, SIG_DFL);
3022 }
2451 3023
2452 EV_FREQUENT_CHECK; 3024 EV_FREQUENT_CHECK;
2453} 3025}
3026
3027#endif
3028
3029#if EV_CHILD_ENABLE
2454 3030
2455void 3031void
2456ev_child_start (EV_P_ ev_child *w) 3032ev_child_start (EV_P_ ev_child *w)
2457{ 3033{
2458#if EV_MULTIPLICITY 3034#if EV_MULTIPLICITY
… …
2462 return; 3038 return;
2463 3039
2464 EV_FREQUENT_CHECK; 3040 EV_FREQUENT_CHECK;
2465 3041
2466 ev_start (EV_A_ (W)w, 1); 3042 ev_start (EV_A_ (W)w, 1);
2467 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3043 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2468 3044
2469 EV_FREQUENT_CHECK; 3045 EV_FREQUENT_CHECK;
2470} 3046}
2471 3047
2472void 3048void
… …
2476 if (expect_false (!ev_is_active (w))) 3052 if (expect_false (!ev_is_active (w)))
2477 return; 3053 return;
2478 3054
2479 EV_FREQUENT_CHECK; 3055 EV_FREQUENT_CHECK;
2480 3056
2481 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3057 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2482 ev_stop (EV_A_ (W)w); 3058 ev_stop (EV_A_ (W)w);
2483 3059
2484 EV_FREQUENT_CHECK; 3060 EV_FREQUENT_CHECK;
2485} 3061}
3062
3063#endif
2486 3064
2487#if EV_STAT_ENABLE 3065#if EV_STAT_ENABLE
2488 3066
2489# ifdef _WIN32 3067# ifdef _WIN32
2490# undef lstat 3068# undef lstat
… …
2496#define MIN_STAT_INTERVAL 0.1074891 3074#define MIN_STAT_INTERVAL 0.1074891
2497 3075
2498static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3076static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2499 3077
2500#if EV_USE_INOTIFY 3078#if EV_USE_INOTIFY
2501# define EV_INOTIFY_BUFSIZE 8192 3079
3080/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3081# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2502 3082
2503static void noinline 3083static void noinline
2504infy_add (EV_P_ ev_stat *w) 3084infy_add (EV_P_ ev_stat *w)
2505{ 3085{
2506 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); 3086 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);
2507 3087
2508 if (w->wd < 0) 3088 if (w->wd >= 0)
3089 {
3090 struct statfs sfs;
3091
3092 /* now local changes will be tracked by inotify, but remote changes won't */
3093 /* unless the filesystem is known to be local, we therefore still poll */
3094 /* also do poll on <2.6.25, but with normal frequency */
3095
3096 if (!fs_2625)
3097 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3098 else if (!statfs (w->path, &sfs)
3099 && (sfs.f_type == 0x1373 /* devfs */
3100 || sfs.f_type == 0xEF53 /* ext2/3 */
3101 || sfs.f_type == 0x3153464a /* jfs */
3102 || sfs.f_type == 0x52654973 /* reiser3 */
3103 || sfs.f_type == 0x01021994 /* tempfs */
3104 || sfs.f_type == 0x58465342 /* xfs */))
3105 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3106 else
3107 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2509 { 3108 }
3109 else
3110 {
3111 /* can't use inotify, continue to stat */
2510 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3112 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2511 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2512 3113
2513 /* monitor some parent directory for speedup hints */ 3114 /* if path is not there, monitor some parent directory for speedup hints */
2514 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3115 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2515 /* but an efficiency issue only */ 3116 /* but an efficiency issue only */
2516 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3117 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2517 { 3118 {
2518 char path [4096]; 3119 char path [4096];
… …
2528 if (!pend || pend == path) 3129 if (!pend || pend == path)
2529 break; 3130 break;
2530 3131
2531 *pend = 0; 3132 *pend = 0;
2532 w->wd = inotify_add_watch (fs_fd, path, mask); 3133 w->wd = inotify_add_watch (fs_fd, path, mask);
2533 } 3134 }
2534 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3135 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2535 } 3136 }
2536 } 3137 }
2537 3138
2538 if (w->wd >= 0) 3139 if (w->wd >= 0)
2539 {
2540 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3140 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2541 3141
2542 /* now local changes will be tracked by inotify, but remote changes won't */ 3142 /* now re-arm timer, if required */
2543 /* unless the filesystem it known to be local, we therefore still poll */ 3143 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2544 /* also do poll on <2.6.25, but with normal frequency */
2545 struct statfs sfs;
2546
2547 if (fs_2625 && !statfs (w->path, &sfs))
2548 if (sfs.f_type == 0x1373 /* devfs */
2549 || sfs.f_type == 0xEF53 /* ext2/3 */
2550 || sfs.f_type == 0x3153464a /* jfs */
2551 || sfs.f_type == 0x52654973 /* reiser3 */
2552 || sfs.f_type == 0x01021994 /* tempfs */
2553 || sfs.f_type == 0x58465342 /* xfs */)
2554 return;
2555
2556 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2557 ev_timer_again (EV_A_ &w->timer); 3144 ev_timer_again (EV_A_ &w->timer);
2558 } 3145 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2559} 3146}
2560 3147
2561static void noinline 3148static void noinline
2562infy_del (EV_P_ ev_stat *w) 3149infy_del (EV_P_ ev_stat *w)
2563{ 3150{
… …
2566 3153
2567 if (wd < 0) 3154 if (wd < 0)
2568 return; 3155 return;
2569 3156
2570 w->wd = -2; 3157 w->wd = -2;
2571 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3158 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2572 wlist_del (&fs_hash [slot].head, (WL)w); 3159 wlist_del (&fs_hash [slot].head, (WL)w);
2573 3160
2574 /* remove this watcher, if others are watching it, they will rearm */ 3161 /* remove this watcher, if others are watching it, they will rearm */
2575 inotify_rm_watch (fs_fd, wd); 3162 inotify_rm_watch (fs_fd, wd);
2576} 3163}
… …
2578static void noinline 3165static void noinline
2579infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3166infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2580{ 3167{
2581 if (slot < 0) 3168 if (slot < 0)
2582 /* overflow, need to check for all hash slots */ 3169 /* overflow, need to check for all hash slots */
2583 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3170 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2584 infy_wd (EV_A_ slot, wd, ev); 3171 infy_wd (EV_A_ slot, wd, ev);
2585 else 3172 else
2586 { 3173 {
2587 WL w_; 3174 WL w_;
2588 3175
2589 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3176 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2590 { 3177 {
2591 ev_stat *w = (ev_stat *)w_; 3178 ev_stat *w = (ev_stat *)w_;
2592 w_ = w_->next; /* lets us remove this watcher and all before it */ 3179 w_ = w_->next; /* lets us remove this watcher and all before it */
2593 3180
2594 if (w->wd == wd || wd == -1) 3181 if (w->wd == wd || wd == -1)
2595 { 3182 {
2596 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3183 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2597 { 3184 {
2598 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3185 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2599 w->wd = -1; 3186 w->wd = -1;
2600 infy_add (EV_A_ w); /* re-add, no matter what */ 3187 infy_add (EV_A_ w); /* re-add, no matter what */
2601 } 3188 }
2602 3189
2603 stat_timer_cb (EV_A_ &w->timer, 0); 3190 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2608 3195
2609static void 3196static void
2610infy_cb (EV_P_ ev_io *w, int revents) 3197infy_cb (EV_P_ ev_io *w, int revents)
2611{ 3198{
2612 char buf [EV_INOTIFY_BUFSIZE]; 3199 char buf [EV_INOTIFY_BUFSIZE];
2613 struct inotify_event *ev = (struct inotify_event *)buf;
2614 int ofs; 3200 int ofs;
2615 int len = read (fs_fd, buf, sizeof (buf)); 3201 int len = read (fs_fd, buf, sizeof (buf));
2616 3202
2617 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3203 for (ofs = 0; ofs < len; )
3204 {
3205 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2618 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3206 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3207 ofs += sizeof (struct inotify_event) + ev->len;
3208 }
2619} 3209}
2620 3210
2621inline_size void 3211inline_size void
2622check_2625 (EV_P) 3212ev_check_2625 (EV_P)
2623{ 3213{
2624 /* kernels < 2.6.25 are borked 3214 /* kernels < 2.6.25 are borked
2625 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3215 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2626 */ 3216 */
2627 struct utsname buf; 3217 if (ev_linux_version () < 0x020619)
2628 int major, minor, micro;
2629
2630 if (uname (&buf))
2631 return; 3218 return;
2632 3219
2633 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2634 return;
2635
2636 if (major < 2
2637 || (major == 2 && minor < 6)
2638 || (major == 2 && minor == 6 && micro < 25))
2639 return;
2640
2641 fs_2625 = 1; 3220 fs_2625 = 1;
3221}
3222
3223inline_size int
3224infy_newfd (void)
3225{
3226#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3227 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3228 if (fd >= 0)
3229 return fd;
3230#endif
3231 return inotify_init ();
2642} 3232}
2643 3233
2644inline_size void 3234inline_size void
2645infy_init (EV_P) 3235infy_init (EV_P)
2646{ 3236{
2647 if (fs_fd != -2) 3237 if (fs_fd != -2)
2648 return; 3238 return;
2649 3239
2650 fs_fd = -1; 3240 fs_fd = -1;
2651 3241
2652 check_2625 (EV_A); 3242 ev_check_2625 (EV_A);
2653 3243
2654 fs_fd = inotify_init (); 3244 fs_fd = infy_newfd ();
2655 3245
2656 if (fs_fd >= 0) 3246 if (fs_fd >= 0)
2657 { 3247 {
3248 fd_intern (fs_fd);
2658 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3249 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2659 ev_set_priority (&fs_w, EV_MAXPRI); 3250 ev_set_priority (&fs_w, EV_MAXPRI);
2660 ev_io_start (EV_A_ &fs_w); 3251 ev_io_start (EV_A_ &fs_w);
3252 ev_unref (EV_A);
2661 } 3253 }
2662} 3254}
2663 3255
2664inline_size void 3256inline_size void
2665infy_fork (EV_P) 3257infy_fork (EV_P)
… …
2667 int slot; 3259 int slot;
2668 3260
2669 if (fs_fd < 0) 3261 if (fs_fd < 0)
2670 return; 3262 return;
2671 3263
3264 ev_ref (EV_A);
3265 ev_io_stop (EV_A_ &fs_w);
2672 close (fs_fd); 3266 close (fs_fd);
2673 fs_fd = inotify_init (); 3267 fs_fd = infy_newfd ();
2674 3268
3269 if (fs_fd >= 0)
3270 {
3271 fd_intern (fs_fd);
3272 ev_io_set (&fs_w, fs_fd, EV_READ);
3273 ev_io_start (EV_A_ &fs_w);
3274 ev_unref (EV_A);
3275 }
3276
2675 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3277 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2676 { 3278 {
2677 WL w_ = fs_hash [slot].head; 3279 WL w_ = fs_hash [slot].head;
2678 fs_hash [slot].head = 0; 3280 fs_hash [slot].head = 0;
2679 3281
2680 while (w_) 3282 while (w_)
… …
2685 w->wd = -1; 3287 w->wd = -1;
2686 3288
2687 if (fs_fd >= 0) 3289 if (fs_fd >= 0)
2688 infy_add (EV_A_ w); /* re-add, no matter what */ 3290 infy_add (EV_A_ w); /* re-add, no matter what */
2689 else 3291 else
3292 {
3293 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3294 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2690 ev_timer_again (EV_A_ &w->timer); 3295 ev_timer_again (EV_A_ &w->timer);
3296 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3297 }
2691 } 3298 }
2692 } 3299 }
2693} 3300}
2694 3301
2695#endif 3302#endif
… …
2712static void noinline 3319static void noinline
2713stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3320stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2714{ 3321{
2715 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3322 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2716 3323
2717 /* we copy this here each the time so that */ 3324 ev_statdata prev = w->attr;
2718 /* prev has the old value when the callback gets invoked */
2719 w->prev = w->attr;
2720 ev_stat_stat (EV_A_ w); 3325 ev_stat_stat (EV_A_ w);
2721 3326
2722 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3327 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2723 if ( 3328 if (
2724 w->prev.st_dev != w->attr.st_dev 3329 prev.st_dev != w->attr.st_dev
2725 || w->prev.st_ino != w->attr.st_ino 3330 || prev.st_ino != w->attr.st_ino
2726 || w->prev.st_mode != w->attr.st_mode 3331 || prev.st_mode != w->attr.st_mode
2727 || w->prev.st_nlink != w->attr.st_nlink 3332 || prev.st_nlink != w->attr.st_nlink
2728 || w->prev.st_uid != w->attr.st_uid 3333 || prev.st_uid != w->attr.st_uid
2729 || w->prev.st_gid != w->attr.st_gid 3334 || prev.st_gid != w->attr.st_gid
2730 || w->prev.st_rdev != w->attr.st_rdev 3335 || prev.st_rdev != w->attr.st_rdev
2731 || w->prev.st_size != w->attr.st_size 3336 || prev.st_size != w->attr.st_size
2732 || w->prev.st_atime != w->attr.st_atime 3337 || prev.st_atime != w->attr.st_atime
2733 || w->prev.st_mtime != w->attr.st_mtime 3338 || prev.st_mtime != w->attr.st_mtime
2734 || w->prev.st_ctime != w->attr.st_ctime 3339 || prev.st_ctime != w->attr.st_ctime
2735 ) { 3340 ) {
3341 /* we only update w->prev on actual differences */
3342 /* in case we test more often than invoke the callback, */
3343 /* to ensure that prev is always different to attr */
3344 w->prev = prev;
3345
2736 #if EV_USE_INOTIFY 3346 #if EV_USE_INOTIFY
2737 if (fs_fd >= 0) 3347 if (fs_fd >= 0)
2738 { 3348 {
2739 infy_del (EV_A_ w); 3349 infy_del (EV_A_ w);
2740 infy_add (EV_A_ w); 3350 infy_add (EV_A_ w);
… …
2765 3375
2766 if (fs_fd >= 0) 3376 if (fs_fd >= 0)
2767 infy_add (EV_A_ w); 3377 infy_add (EV_A_ w);
2768 else 3378 else
2769#endif 3379#endif
3380 {
2770 ev_timer_again (EV_A_ &w->timer); 3381 ev_timer_again (EV_A_ &w->timer);
3382 ev_unref (EV_A);
3383 }
2771 3384
2772 ev_start (EV_A_ (W)w, 1); 3385 ev_start (EV_A_ (W)w, 1);
2773 3386
2774 EV_FREQUENT_CHECK; 3387 EV_FREQUENT_CHECK;
2775} 3388}
… …
2784 EV_FREQUENT_CHECK; 3397 EV_FREQUENT_CHECK;
2785 3398
2786#if EV_USE_INOTIFY 3399#if EV_USE_INOTIFY
2787 infy_del (EV_A_ w); 3400 infy_del (EV_A_ w);
2788#endif 3401#endif
3402
3403 if (ev_is_active (&w->timer))
3404 {
3405 ev_ref (EV_A);
2789 ev_timer_stop (EV_A_ &w->timer); 3406 ev_timer_stop (EV_A_ &w->timer);
3407 }
2790 3408
2791 ev_stop (EV_A_ (W)w); 3409 ev_stop (EV_A_ (W)w);
2792 3410
2793 EV_FREQUENT_CHECK; 3411 EV_FREQUENT_CHECK;
2794} 3412}
… …
2839 3457
2840 EV_FREQUENT_CHECK; 3458 EV_FREQUENT_CHECK;
2841} 3459}
2842#endif 3460#endif
2843 3461
3462#if EV_PREPARE_ENABLE
2844void 3463void
2845ev_prepare_start (EV_P_ ev_prepare *w) 3464ev_prepare_start (EV_P_ ev_prepare *w)
2846{ 3465{
2847 if (expect_false (ev_is_active (w))) 3466 if (expect_false (ev_is_active (w)))
2848 return; 3467 return;
… …
2874 3493
2875 ev_stop (EV_A_ (W)w); 3494 ev_stop (EV_A_ (W)w);
2876 3495
2877 EV_FREQUENT_CHECK; 3496 EV_FREQUENT_CHECK;
2878} 3497}
3498#endif
2879 3499
3500#if EV_CHECK_ENABLE
2880void 3501void
2881ev_check_start (EV_P_ ev_check *w) 3502ev_check_start (EV_P_ ev_check *w)
2882{ 3503{
2883 if (expect_false (ev_is_active (w))) 3504 if (expect_false (ev_is_active (w)))
2884 return; 3505 return;
… …
2910 3531
2911 ev_stop (EV_A_ (W)w); 3532 ev_stop (EV_A_ (W)w);
2912 3533
2913 EV_FREQUENT_CHECK; 3534 EV_FREQUENT_CHECK;
2914} 3535}
3536#endif
2915 3537
2916#if EV_EMBED_ENABLE 3538#if EV_EMBED_ENABLE
2917void noinline 3539void noinline
2918ev_embed_sweep (EV_P_ ev_embed *w) 3540ev_embed_sweep (EV_P_ ev_embed *w)
2919{ 3541{
2920 ev_loop (w->other, EVLOOP_NONBLOCK); 3542 ev_run (w->other, EVRUN_NOWAIT);
2921} 3543}
2922 3544
2923static void 3545static void
2924embed_io_cb (EV_P_ ev_io *io, int revents) 3546embed_io_cb (EV_P_ ev_io *io, int revents)
2925{ 3547{
2926 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3548 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2927 3549
2928 if (ev_cb (w)) 3550 if (ev_cb (w))
2929 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3551 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2930 else 3552 else
2931 ev_loop (w->other, EVLOOP_NONBLOCK); 3553 ev_run (w->other, EVRUN_NOWAIT);
2932} 3554}
2933 3555
2934static void 3556static void
2935embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3557embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2936{ 3558{
2937 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3559 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2938 3560
2939 { 3561 {
2940 struct ev_loop *loop = w->other; 3562 EV_P = w->other;
2941 3563
2942 while (fdchangecnt) 3564 while (fdchangecnt)
2943 { 3565 {
2944 fd_reify (EV_A); 3566 fd_reify (EV_A);
2945 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3567 ev_run (EV_A_ EVRUN_NOWAIT);
2946 } 3568 }
2947 } 3569 }
2948} 3570}
2949 3571
2950static void 3572static void
… …
2953 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3575 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2954 3576
2955 ev_embed_stop (EV_A_ w); 3577 ev_embed_stop (EV_A_ w);
2956 3578
2957 { 3579 {
2958 struct ev_loop *loop = w->other; 3580 EV_P = w->other;
2959 3581
2960 ev_loop_fork (EV_A); 3582 ev_loop_fork (EV_A);
2961 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3583 ev_run (EV_A_ EVRUN_NOWAIT);
2962 } 3584 }
2963 3585
2964 ev_embed_start (EV_A_ w); 3586 ev_embed_start (EV_A_ w);
2965} 3587}
2966 3588
… …
2977{ 3599{
2978 if (expect_false (ev_is_active (w))) 3600 if (expect_false (ev_is_active (w)))
2979 return; 3601 return;
2980 3602
2981 { 3603 {
2982 struct ev_loop *loop = w->other; 3604 EV_P = w->other;
2983 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3605 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2984 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3606 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2985 } 3607 }
2986 3608
2987 EV_FREQUENT_CHECK; 3609 EV_FREQUENT_CHECK;
… …
3014 3636
3015 ev_io_stop (EV_A_ &w->io); 3637 ev_io_stop (EV_A_ &w->io);
3016 ev_prepare_stop (EV_A_ &w->prepare); 3638 ev_prepare_stop (EV_A_ &w->prepare);
3017 ev_fork_stop (EV_A_ &w->fork); 3639 ev_fork_stop (EV_A_ &w->fork);
3018 3640
3641 ev_stop (EV_A_ (W)w);
3642
3019 EV_FREQUENT_CHECK; 3643 EV_FREQUENT_CHECK;
3020} 3644}
3021#endif 3645#endif
3022 3646
3023#if EV_FORK_ENABLE 3647#if EV_FORK_ENABLE
… …
3056 3680
3057 EV_FREQUENT_CHECK; 3681 EV_FREQUENT_CHECK;
3058} 3682}
3059#endif 3683#endif
3060 3684
3061#if EV_ASYNC_ENABLE 3685#if EV_CLEANUP_ENABLE
3062void 3686void
3063ev_async_start (EV_P_ ev_async *w) 3687ev_cleanup_start (EV_P_ ev_cleanup *w)
3064{ 3688{
3065 if (expect_false (ev_is_active (w))) 3689 if (expect_false (ev_is_active (w)))
3066 return; 3690 return;
3691
3692 EV_FREQUENT_CHECK;
3693
3694 ev_start (EV_A_ (W)w, ++cleanupcnt);
3695 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3696 cleanups [cleanupcnt - 1] = w;
3697
3698 /* cleanup watchers should never keep a refcount on the loop */
3699 ev_unref (EV_A);
3700 EV_FREQUENT_CHECK;
3701}
3702
3703void
3704ev_cleanup_stop (EV_P_ ev_cleanup *w)
3705{
3706 clear_pending (EV_A_ (W)w);
3707 if (expect_false (!ev_is_active (w)))
3708 return;
3709
3710 EV_FREQUENT_CHECK;
3711 ev_ref (EV_A);
3712
3713 {
3714 int active = ev_active (w);
3715
3716 cleanups [active - 1] = cleanups [--cleanupcnt];
3717 ev_active (cleanups [active - 1]) = active;
3718 }
3719
3720 ev_stop (EV_A_ (W)w);
3721
3722 EV_FREQUENT_CHECK;
3723}
3724#endif
3725
3726#if EV_ASYNC_ENABLE
3727void
3728ev_async_start (EV_P_ ev_async *w)
3729{
3730 if (expect_false (ev_is_active (w)))
3731 return;
3732
3733 w->sent = 0;
3067 3734
3068 evpipe_init (EV_A); 3735 evpipe_init (EV_A);
3069 3736
3070 EV_FREQUENT_CHECK; 3737 EV_FREQUENT_CHECK;
3071 3738
… …
3099 3766
3100void 3767void
3101ev_async_send (EV_P_ ev_async *w) 3768ev_async_send (EV_P_ ev_async *w)
3102{ 3769{
3103 w->sent = 1; 3770 w->sent = 1;
3104 evpipe_write (EV_A_ &gotasync); 3771 evpipe_write (EV_A_ &async_pending);
3105} 3772}
3106#endif 3773#endif
3107 3774
3108/*****************************************************************************/ 3775/*****************************************************************************/
3109 3776
… …
3149{ 3816{
3150 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3817 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3151 3818
3152 if (expect_false (!once)) 3819 if (expect_false (!once))
3153 { 3820 {
3154 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3821 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3155 return; 3822 return;
3156 } 3823 }
3157 3824
3158 once->cb = cb; 3825 once->cb = cb;
3159 once->arg = arg; 3826 once->arg = arg;
… …
3173 } 3840 }
3174} 3841}
3175 3842
3176/*****************************************************************************/ 3843/*****************************************************************************/
3177 3844
3178#if 0 3845#if EV_WALK_ENABLE
3179void 3846void
3180ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 3847ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3181{ 3848{
3182 int i, j; 3849 int i, j;
3183 ev_watcher_list *wl, *wn; 3850 ev_watcher_list *wl, *wn;
… …
3199#if EV_USE_INOTIFY 3866#if EV_USE_INOTIFY
3200 if (ev_cb ((ev_io *)wl) == infy_cb) 3867 if (ev_cb ((ev_io *)wl) == infy_cb)
3201 ; 3868 ;
3202 else 3869 else
3203#endif 3870#endif
3204 if ((ev_io *)wl != &pipeev) 3871 if ((ev_io *)wl != &pipe_w)
3205 if (types & EV_IO) 3872 if (types & EV_IO)
3206 cb (EV_A_ EV_IO, wl); 3873 cb (EV_A_ EV_IO, wl);
3207 3874
3208 wl = wn; 3875 wl = wn;
3209 } 3876 }
… …
3246 if (types & EV_ASYNC) 3913 if (types & EV_ASYNC)
3247 for (i = asynccnt; i--; ) 3914 for (i = asynccnt; i--; )
3248 cb (EV_A_ EV_ASYNC, asyncs [i]); 3915 cb (EV_A_ EV_ASYNC, asyncs [i]);
3249#endif 3916#endif
3250 3917
3918#if EV_PREPARE_ENABLE
3251 if (types & EV_PREPARE) 3919 if (types & EV_PREPARE)
3252 for (i = preparecnt; i--; ) 3920 for (i = preparecnt; i--; )
3253#if EV_EMBED_ENABLE 3921# if EV_EMBED_ENABLE
3254 if (ev_cb (prepares [i]) != embed_prepare_cb) 3922 if (ev_cb (prepares [i]) != embed_prepare_cb)
3255#endif 3923# endif
3256 cb (EV_A_ EV_PREPARE, prepares [i]); 3924 cb (EV_A_ EV_PREPARE, prepares [i]);
3925#endif
3257 3926
3927#if EV_CHECK_ENABLE
3258 if (types & EV_CHECK) 3928 if (types & EV_CHECK)
3259 for (i = checkcnt; i--; ) 3929 for (i = checkcnt; i--; )
3260 cb (EV_A_ EV_CHECK, checks [i]); 3930 cb (EV_A_ EV_CHECK, checks [i]);
3931#endif
3261 3932
3933#if EV_SIGNAL_ENABLE
3262 if (types & EV_SIGNAL) 3934 if (types & EV_SIGNAL)
3263 for (i = 0; i < signalmax; ++i) 3935 for (i = 0; i < EV_NSIG - 1; ++i)
3264 for (wl = signals [i].head; wl; ) 3936 for (wl = signals [i].head; wl; )
3265 { 3937 {
3266 wn = wl->next; 3938 wn = wl->next;
3267 cb (EV_A_ EV_SIGNAL, wl); 3939 cb (EV_A_ EV_SIGNAL, wl);
3268 wl = wn; 3940 wl = wn;
3269 } 3941 }
3942#endif
3270 3943
3944#if EV_CHILD_ENABLE
3271 if (types & EV_CHILD) 3945 if (types & EV_CHILD)
3272 for (i = EV_PID_HASHSIZE; i--; ) 3946 for (i = (EV_PID_HASHSIZE); i--; )
3273 for (wl = childs [i]; wl; ) 3947 for (wl = childs [i]; wl; )
3274 { 3948 {
3275 wn = wl->next; 3949 wn = wl->next;
3276 cb (EV_A_ EV_CHILD, wl); 3950 cb (EV_A_ EV_CHILD, wl);
3277 wl = wn; 3951 wl = wn;
3278 } 3952 }
3953#endif
3279/* EV_STAT 0x00001000 /* stat data changed */ 3954/* EV_STAT 0x00001000 /* stat data changed */
3280/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 3955/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3281} 3956}
3282#endif 3957#endif
3283 3958
3284#if EV_MULTIPLICITY 3959#if EV_MULTIPLICITY
3285 #include "ev_wrap.h" 3960 #include "ev_wrap.h"
3286#endif 3961#endif
3287 3962
3288#ifdef __cplusplus 3963EV_CPP(})
3289}
3290#endif
3291 3964

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