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Comparing libev/ev.c (file contents):
Revision 1.287 by root, Mon Apr 20 19:45:58 2009 UTC vs.
Revision 1.378 by root, Mon Jun 13 09:52:36 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 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 */
1076
1077 *flag = 1; 1373 *flag = 1;
1078 1374
1375 pipe_write_skipped = 1;
1376
1377 if (pipe_write_wanted)
1378 {
1379 int old_errno = errno; /* save errno because write will clobber it */
1380 char dummy;
1381
1382 pipe_write_skipped = 0;
1383
1384#if EV_USE_EVENTFD
1385 if (evfd >= 0)
1386 {
1387 uint64_t counter = 1;
1388 write (evfd, &counter, sizeof (uint64_t));
1389 }
1390 else
1391#endif
1392 {
1393 /* win32 people keep sending patches that change this write() to send() */
1394 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1395 /* so when you think this write should be a send instead, please find out */
1396 /* where your send() is from - it's definitely not the microsoft send, and */
1397 /* tell me. thank you. */
1398 write (evpipe [1], &dummy, 1);
1399 }
1400
1401 errno = old_errno;
1402 }
1403 }
1404}
1405
1406/* called whenever the libev signal pipe */
1407/* got some events (signal, async) */
1408static void
1409pipecb (EV_P_ ev_io *iow, int revents)
1410{
1411 int i;
1412
1413 if (revents & EV_READ)
1414 {
1079#if EV_USE_EVENTFD 1415#if EV_USE_EVENTFD
1080 if (evfd >= 0) 1416 if (evfd >= 0)
1081 { 1417 {
1082 uint64_t counter = 1; 1418 uint64_t counter;
1083 write (evfd, &counter, sizeof (uint64_t)); 1419 read (evfd, &counter, sizeof (uint64_t));
1084 } 1420 }
1085 else 1421 else
1086#endif 1422#endif
1087 write (evpipe [1], &old_errno, 1); 1423 {
1088
1089 errno = old_errno;
1090 }
1091}
1092
1093static void
1094pipecb (EV_P_ ev_io *iow, int revents)
1095{
1096#if EV_USE_EVENTFD
1097 if (evfd >= 0)
1098 {
1099 uint64_t counter;
1100 read (evfd, &counter, sizeof (uint64_t));
1101 }
1102 else
1103#endif
1104 {
1105 char dummy; 1424 char dummy;
1425 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1106 read (evpipe [0], &dummy, 1); 1426 read (evpipe [0], &dummy, 1);
1427 }
1428 }
1429
1430 pipe_write_skipped = 0;
1431
1432#if EV_SIGNAL_ENABLE
1433 if (sig_pending)
1107 } 1434 {
1435 sig_pending = 0;
1108 1436
1109 if (gotsig && ev_is_default_loop (EV_A)) 1437 for (i = EV_NSIG - 1; i--; )
1110 { 1438 if (expect_false (signals [i].pending))
1111 int signum;
1112 gotsig = 0;
1113
1114 for (signum = signalmax; signum--; )
1115 if (signals [signum].gotsig)
1116 ev_feed_signal_event (EV_A_ signum + 1); 1439 ev_feed_signal_event (EV_A_ i + 1);
1117 } 1440 }
1441#endif
1118 1442
1119#if EV_ASYNC_ENABLE 1443#if EV_ASYNC_ENABLE
1120 if (gotasync) 1444 if (async_pending)
1121 { 1445 {
1122 int i; 1446 async_pending = 0;
1123 gotasync = 0;
1124 1447
1125 for (i = asynccnt; i--; ) 1448 for (i = asynccnt; i--; )
1126 if (asyncs [i]->sent) 1449 if (asyncs [i]->sent)
1127 { 1450 {
1128 asyncs [i]->sent = 0; 1451 asyncs [i]->sent = 0;
… …
1132#endif 1455#endif
1133} 1456}
1134 1457
1135/*****************************************************************************/ 1458/*****************************************************************************/
1136 1459
1460void
1461ev_feed_signal (int signum)
1462{
1463#if EV_MULTIPLICITY
1464 EV_P = signals [signum - 1].loop;
1465
1466 if (!EV_A)
1467 return;
1468#endif
1469
1470 evpipe_init (EV_A);
1471
1472 signals [signum - 1].pending = 1;
1473 evpipe_write (EV_A_ &sig_pending);
1474}
1475
1137static void 1476static void
1138ev_sighandler (int signum) 1477ev_sighandler (int signum)
1139{ 1478{
1140#if EV_MULTIPLICITY
1141 struct ev_loop *loop = &default_loop_struct;
1142#endif
1143
1144#if _WIN32 1479#ifdef _WIN32
1145 signal (signum, ev_sighandler); 1480 signal (signum, ev_sighandler);
1146#endif 1481#endif
1147 1482
1148 signals [signum - 1].gotsig = 1; 1483 ev_feed_signal (signum);
1149 evpipe_write (EV_A_ &gotsig);
1150} 1484}
1151 1485
1152void noinline 1486void noinline
1153ev_feed_signal_event (EV_P_ int signum) 1487ev_feed_signal_event (EV_P_ int signum)
1154{ 1488{
1155 WL w; 1489 WL w;
1156 1490
1491 if (expect_false (signum <= 0 || signum > EV_NSIG))
1492 return;
1493
1494 --signum;
1495
1157#if EV_MULTIPLICITY 1496#if EV_MULTIPLICITY
1158 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1497 /* it is permissible to try to feed a signal to the wrong loop */
1159#endif 1498 /* or, likely more useful, feeding a signal nobody is waiting for */
1160 1499
1161 --signum; 1500 if (expect_false (signals [signum].loop != EV_A))
1162
1163 if (signum < 0 || signum >= signalmax)
1164 return; 1501 return;
1502#endif
1165 1503
1166 signals [signum].gotsig = 0; 1504 signals [signum].pending = 0;
1167 1505
1168 for (w = signals [signum].head; w; w = w->next) 1506 for (w = signals [signum].head; w; w = w->next)
1169 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1507 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1170} 1508}
1171 1509
1510#if EV_USE_SIGNALFD
1511static void
1512sigfdcb (EV_P_ ev_io *iow, int revents)
1513{
1514 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1515
1516 for (;;)
1517 {
1518 ssize_t res = read (sigfd, si, sizeof (si));
1519
1520 /* not ISO-C, as res might be -1, but works with SuS */
1521 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1522 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1523
1524 if (res < (ssize_t)sizeof (si))
1525 break;
1526 }
1527}
1528#endif
1529
1530#endif
1531
1172/*****************************************************************************/ 1532/*****************************************************************************/
1173 1533
1534#if EV_CHILD_ENABLE
1174static WL childs [EV_PID_HASHSIZE]; 1535static WL childs [EV_PID_HASHSIZE];
1175
1176#ifndef _WIN32
1177 1536
1178static ev_signal childev; 1537static ev_signal childev;
1179 1538
1180#ifndef WIFCONTINUED 1539#ifndef WIFCONTINUED
1181# define WIFCONTINUED(status) 0 1540# define WIFCONTINUED(status) 0
1182#endif 1541#endif
1183 1542
1543/* handle a single child status event */
1184inline_speed void 1544inline_speed void
1185child_reap (EV_P_ int chain, int pid, int status) 1545child_reap (EV_P_ int chain, int pid, int status)
1186{ 1546{
1187 ev_child *w; 1547 ev_child *w;
1188 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1548 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1189 1549
1190 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1550 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1191 { 1551 {
1192 if ((w->pid == pid || !w->pid) 1552 if ((w->pid == pid || !w->pid)
1193 && (!traced || (w->flags & 1))) 1553 && (!traced || (w->flags & 1)))
1194 { 1554 {
1195 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1555 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1202 1562
1203#ifndef WCONTINUED 1563#ifndef WCONTINUED
1204# define WCONTINUED 0 1564# define WCONTINUED 0
1205#endif 1565#endif
1206 1566
1567/* called on sigchld etc., calls waitpid */
1207static void 1568static void
1208childcb (EV_P_ ev_signal *sw, int revents) 1569childcb (EV_P_ ev_signal *sw, int revents)
1209{ 1570{
1210 int pid, status; 1571 int pid, status;
1211 1572
… …
1219 /* make sure we are called again until all children have been reaped */ 1580 /* make sure we are called again until all children have been reaped */
1220 /* we need to do it this way so that the callback gets called before we continue */ 1581 /* we need to do it this way so that the callback gets called before we continue */
1221 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1582 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1222 1583
1223 child_reap (EV_A_ pid, pid, status); 1584 child_reap (EV_A_ pid, pid, status);
1224 if (EV_PID_HASHSIZE > 1) 1585 if ((EV_PID_HASHSIZE) > 1)
1225 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1586 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1226} 1587}
1227 1588
1228#endif 1589#endif
1229 1590
1230/*****************************************************************************/ 1591/*****************************************************************************/
1231 1592
1593#if EV_USE_IOCP
1594# include "ev_iocp.c"
1595#endif
1232#if EV_USE_PORT 1596#if EV_USE_PORT
1233# include "ev_port.c" 1597# include "ev_port.c"
1234#endif 1598#endif
1235#if EV_USE_KQUEUE 1599#if EV_USE_KQUEUE
1236# include "ev_kqueue.c" 1600# include "ev_kqueue.c"
… …
1296#ifdef __APPLE__ 1660#ifdef __APPLE__
1297 /* only select works correctly on that "unix-certified" platform */ 1661 /* only select works correctly on that "unix-certified" platform */
1298 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1662 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1299 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1663 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1300#endif 1664#endif
1665#ifdef __FreeBSD__
1666 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1667#endif
1301 1668
1302 return flags; 1669 return flags;
1303} 1670}
1304 1671
1305unsigned int 1672unsigned int
1306ev_embeddable_backends (void) 1673ev_embeddable_backends (void)
1307{ 1674{
1308 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1675 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1309 1676
1310 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1677 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1311 /* please fix it and tell me how to detect the fix */ 1678 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1312 flags &= ~EVBACKEND_EPOLL; 1679 flags &= ~EVBACKEND_EPOLL;
1313 1680
1314 return flags; 1681 return flags;
1315} 1682}
1316 1683
1317unsigned int 1684unsigned int
1318ev_backend (EV_P) 1685ev_backend (EV_P)
1319{ 1686{
1320 return backend; 1687 return backend;
1321} 1688}
1322 1689
1690#if EV_FEATURE_API
1323unsigned int 1691unsigned int
1324ev_loop_count (EV_P) 1692ev_iteration (EV_P)
1325{ 1693{
1326 return loop_count; 1694 return loop_count;
1327} 1695}
1328 1696
1697unsigned int
1698ev_depth (EV_P)
1699{
1700 return loop_depth;
1701}
1702
1329void 1703void
1330ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1704ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1331{ 1705{
1332 io_blocktime = interval; 1706 io_blocktime = interval;
1333} 1707}
… …
1336ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1710ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1337{ 1711{
1338 timeout_blocktime = interval; 1712 timeout_blocktime = interval;
1339} 1713}
1340 1714
1715void
1716ev_set_userdata (EV_P_ void *data)
1717{
1718 userdata = data;
1719}
1720
1721void *
1722ev_userdata (EV_P)
1723{
1724 return userdata;
1725}
1726
1727void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1728{
1729 invoke_cb = invoke_pending_cb;
1730}
1731
1732void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1733{
1734 release_cb = release;
1735 acquire_cb = acquire;
1736}
1737#endif
1738
1739/* initialise a loop structure, must be zero-initialised */
1341static void noinline 1740static void noinline
1342loop_init (EV_P_ unsigned int flags) 1741loop_init (EV_P_ unsigned int flags)
1343{ 1742{
1344 if (!backend) 1743 if (!backend)
1345 { 1744 {
1745 origflags = flags;
1746
1346#if EV_USE_REALTIME 1747#if EV_USE_REALTIME
1347 if (!have_realtime) 1748 if (!have_realtime)
1348 { 1749 {
1349 struct timespec ts; 1750 struct timespec ts;
1350 1751
… …
1361 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1762 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1362 have_monotonic = 1; 1763 have_monotonic = 1;
1363 } 1764 }
1364#endif 1765#endif
1365 1766
1366 ev_rt_now = ev_time ();
1367 mn_now = get_clock ();
1368 now_floor = mn_now;
1369 rtmn_diff = ev_rt_now - mn_now;
1370
1371 io_blocktime = 0.;
1372 timeout_blocktime = 0.;
1373 backend = 0;
1374 backend_fd = -1;
1375 gotasync = 0;
1376#if EV_USE_INOTIFY
1377 fs_fd = -2;
1378#endif
1379
1380 /* pid check not overridable via env */ 1767 /* pid check not overridable via env */
1381#ifndef _WIN32 1768#ifndef _WIN32
1382 if (flags & EVFLAG_FORKCHECK) 1769 if (flags & EVFLAG_FORKCHECK)
1383 curpid = getpid (); 1770 curpid = getpid ();
1384#endif 1771#endif
… …
1386 if (!(flags & EVFLAG_NOENV) 1773 if (!(flags & EVFLAG_NOENV)
1387 && !enable_secure () 1774 && !enable_secure ()
1388 && getenv ("LIBEV_FLAGS")) 1775 && getenv ("LIBEV_FLAGS"))
1389 flags = atoi (getenv ("LIBEV_FLAGS")); 1776 flags = atoi (getenv ("LIBEV_FLAGS"));
1390 1777
1391 if (!(flags & 0x0000ffffU)) 1778 ev_rt_now = ev_time ();
1779 mn_now = get_clock ();
1780 now_floor = mn_now;
1781 rtmn_diff = ev_rt_now - mn_now;
1782#if EV_FEATURE_API
1783 invoke_cb = ev_invoke_pending;
1784#endif
1785
1786 io_blocktime = 0.;
1787 timeout_blocktime = 0.;
1788 backend = 0;
1789 backend_fd = -1;
1790 sig_pending = 0;
1791#if EV_ASYNC_ENABLE
1792 async_pending = 0;
1793#endif
1794 pipe_write_skipped = 0;
1795 pipe_write_wanted = 0;
1796#if EV_USE_INOTIFY
1797 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1798#endif
1799#if EV_USE_SIGNALFD
1800 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1801#endif
1802
1803 if (!(flags & EVBACKEND_MASK))
1392 flags |= ev_recommended_backends (); 1804 flags |= ev_recommended_backends ();
1393 1805
1806#if EV_USE_IOCP
1807 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1808#endif
1394#if EV_USE_PORT 1809#if EV_USE_PORT
1395 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1810 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1396#endif 1811#endif
1397#if EV_USE_KQUEUE 1812#if EV_USE_KQUEUE
1398 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1813 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1405#endif 1820#endif
1406#if EV_USE_SELECT 1821#if EV_USE_SELECT
1407 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1822 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1408#endif 1823#endif
1409 1824
1825 ev_prepare_init (&pending_w, pendingcb);
1826
1827#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1410 ev_init (&pipeev, pipecb); 1828 ev_init (&pipe_w, pipecb);
1411 ev_set_priority (&pipeev, EV_MAXPRI); 1829 ev_set_priority (&pipe_w, EV_MAXPRI);
1830#endif
1412 } 1831 }
1413} 1832}
1414 1833
1415static void noinline 1834/* free up a loop structure */
1835void
1416loop_destroy (EV_P) 1836ev_loop_destroy (EV_P)
1417{ 1837{
1418 int i; 1838 int i;
1419 1839
1840#if EV_MULTIPLICITY
1841 /* mimic free (0) */
1842 if (!EV_A)
1843 return;
1844#endif
1845
1846#if EV_CLEANUP_ENABLE
1847 /* queue cleanup watchers (and execute them) */
1848 if (expect_false (cleanupcnt))
1849 {
1850 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1851 EV_INVOKE_PENDING;
1852 }
1853#endif
1854
1855#if EV_CHILD_ENABLE
1856 if (ev_is_active (&childev))
1857 {
1858 ev_ref (EV_A); /* child watcher */
1859 ev_signal_stop (EV_A_ &childev);
1860 }
1861#endif
1862
1420 if (ev_is_active (&pipeev)) 1863 if (ev_is_active (&pipe_w))
1421 { 1864 {
1422 ev_ref (EV_A); /* signal watcher */ 1865 /*ev_ref (EV_A);*/
1423 ev_io_stop (EV_A_ &pipeev); 1866 /*ev_io_stop (EV_A_ &pipe_w);*/
1424 1867
1425#if EV_USE_EVENTFD 1868#if EV_USE_EVENTFD
1426 if (evfd >= 0) 1869 if (evfd >= 0)
1427 close (evfd); 1870 close (evfd);
1428#endif 1871#endif
1429 1872
1430 if (evpipe [0] >= 0) 1873 if (evpipe [0] >= 0)
1431 { 1874 {
1432 close (evpipe [0]); 1875 EV_WIN32_CLOSE_FD (evpipe [0]);
1433 close (evpipe [1]); 1876 EV_WIN32_CLOSE_FD (evpipe [1]);
1434 } 1877 }
1435 } 1878 }
1879
1880#if EV_USE_SIGNALFD
1881 if (ev_is_active (&sigfd_w))
1882 close (sigfd);
1883#endif
1436 1884
1437#if EV_USE_INOTIFY 1885#if EV_USE_INOTIFY
1438 if (fs_fd >= 0) 1886 if (fs_fd >= 0)
1439 close (fs_fd); 1887 close (fs_fd);
1440#endif 1888#endif
1441 1889
1442 if (backend_fd >= 0) 1890 if (backend_fd >= 0)
1443 close (backend_fd); 1891 close (backend_fd);
1444 1892
1893#if EV_USE_IOCP
1894 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1895#endif
1445#if EV_USE_PORT 1896#if EV_USE_PORT
1446 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1897 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1447#endif 1898#endif
1448#if EV_USE_KQUEUE 1899#if EV_USE_KQUEUE
1449 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1900 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1464#if EV_IDLE_ENABLE 1915#if EV_IDLE_ENABLE
1465 array_free (idle, [i]); 1916 array_free (idle, [i]);
1466#endif 1917#endif
1467 } 1918 }
1468 1919
1469 ev_free (anfds); anfdmax = 0; 1920 ev_free (anfds); anfds = 0; anfdmax = 0;
1470 1921
1471 /* have to use the microsoft-never-gets-it-right macro */ 1922 /* have to use the microsoft-never-gets-it-right macro */
1472 array_free (rfeed, EMPTY); 1923 array_free (rfeed, EMPTY);
1473 array_free (fdchange, EMPTY); 1924 array_free (fdchange, EMPTY);
1474 array_free (timer, EMPTY); 1925 array_free (timer, EMPTY);
… …
1476 array_free (periodic, EMPTY); 1927 array_free (periodic, EMPTY);
1477#endif 1928#endif
1478#if EV_FORK_ENABLE 1929#if EV_FORK_ENABLE
1479 array_free (fork, EMPTY); 1930 array_free (fork, EMPTY);
1480#endif 1931#endif
1932#if EV_CLEANUP_ENABLE
1933 array_free (cleanup, EMPTY);
1934#endif
1481 array_free (prepare, EMPTY); 1935 array_free (prepare, EMPTY);
1482 array_free (check, EMPTY); 1936 array_free (check, EMPTY);
1483#if EV_ASYNC_ENABLE 1937#if EV_ASYNC_ENABLE
1484 array_free (async, EMPTY); 1938 array_free (async, EMPTY);
1485#endif 1939#endif
1486 1940
1487 backend = 0; 1941 backend = 0;
1942
1943#if EV_MULTIPLICITY
1944 if (ev_is_default_loop (EV_A))
1945#endif
1946 ev_default_loop_ptr = 0;
1947#if EV_MULTIPLICITY
1948 else
1949 ev_free (EV_A);
1950#endif
1488} 1951}
1489 1952
1490#if EV_USE_INOTIFY 1953#if EV_USE_INOTIFY
1491inline_size void infy_fork (EV_P); 1954inline_size void infy_fork (EV_P);
1492#endif 1955#endif
… …
1505#endif 1968#endif
1506#if EV_USE_INOTIFY 1969#if EV_USE_INOTIFY
1507 infy_fork (EV_A); 1970 infy_fork (EV_A);
1508#endif 1971#endif
1509 1972
1510 if (ev_is_active (&pipeev)) 1973 if (ev_is_active (&pipe_w))
1511 { 1974 {
1512 /* this "locks" the handlers against writing to the pipe */ 1975 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1513 /* while we modify the fd vars */
1514 gotsig = 1;
1515#if EV_ASYNC_ENABLE
1516 gotasync = 1;
1517#endif
1518 1976
1519 ev_ref (EV_A); 1977 ev_ref (EV_A);
1520 ev_io_stop (EV_A_ &pipeev); 1978 ev_io_stop (EV_A_ &pipe_w);
1521 1979
1522#if EV_USE_EVENTFD 1980#if EV_USE_EVENTFD
1523 if (evfd >= 0) 1981 if (evfd >= 0)
1524 close (evfd); 1982 close (evfd);
1525#endif 1983#endif
1526 1984
1527 if (evpipe [0] >= 0) 1985 if (evpipe [0] >= 0)
1528 { 1986 {
1529 close (evpipe [0]); 1987 EV_WIN32_CLOSE_FD (evpipe [0]);
1530 close (evpipe [1]); 1988 EV_WIN32_CLOSE_FD (evpipe [1]);
1531 } 1989 }
1532 1990
1991#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1533 evpipe_init (EV_A); 1992 evpipe_init (EV_A);
1534 /* now iterate over everything, in case we missed something */ 1993 /* now iterate over everything, in case we missed something */
1535 pipecb (EV_A_ &pipeev, EV_READ); 1994 pipecb (EV_A_ &pipe_w, EV_READ);
1995#endif
1536 } 1996 }
1537 1997
1538 postfork = 0; 1998 postfork = 0;
1539} 1999}
1540 2000
1541#if EV_MULTIPLICITY 2001#if EV_MULTIPLICITY
1542 2002
1543struct ev_loop * 2003struct ev_loop *
1544ev_loop_new (unsigned int flags) 2004ev_loop_new (unsigned int flags)
1545{ 2005{
1546 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2006 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1547 2007
1548 memset (loop, 0, sizeof (struct ev_loop)); 2008 memset (EV_A, 0, sizeof (struct ev_loop));
1549
1550 loop_init (EV_A_ flags); 2009 loop_init (EV_A_ flags);
1551 2010
1552 if (ev_backend (EV_A)) 2011 if (ev_backend (EV_A))
1553 return loop; 2012 return EV_A;
1554 2013
2014 ev_free (EV_A);
1555 return 0; 2015 return 0;
1556} 2016}
1557 2017
1558void 2018#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 2019
1571#if EV_VERIFY 2020#if EV_VERIFY
1572static void noinline 2021static void noinline
1573verify_watcher (EV_P_ W w) 2022verify_watcher (EV_P_ W w)
1574{ 2023{
… …
1602 verify_watcher (EV_A_ ws [cnt]); 2051 verify_watcher (EV_A_ ws [cnt]);
1603 } 2052 }
1604} 2053}
1605#endif 2054#endif
1606 2055
2056#if EV_FEATURE_API
1607void 2057void
1608ev_loop_verify (EV_P) 2058ev_verify (EV_P)
1609{ 2059{
1610#if EV_VERIFY 2060#if EV_VERIFY
1611 int i; 2061 int i;
1612 WL w; 2062 WL w;
1613 2063
… …
1647#if EV_FORK_ENABLE 2097#if EV_FORK_ENABLE
1648 assert (forkmax >= forkcnt); 2098 assert (forkmax >= forkcnt);
1649 array_verify (EV_A_ (W *)forks, forkcnt); 2099 array_verify (EV_A_ (W *)forks, forkcnt);
1650#endif 2100#endif
1651 2101
2102#if EV_CLEANUP_ENABLE
2103 assert (cleanupmax >= cleanupcnt);
2104 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2105#endif
2106
1652#if EV_ASYNC_ENABLE 2107#if EV_ASYNC_ENABLE
1653 assert (asyncmax >= asynccnt); 2108 assert (asyncmax >= asynccnt);
1654 array_verify (EV_A_ (W *)asyncs, asynccnt); 2109 array_verify (EV_A_ (W *)asyncs, asynccnt);
1655#endif 2110#endif
1656 2111
2112#if EV_PREPARE_ENABLE
1657 assert (preparemax >= preparecnt); 2113 assert (preparemax >= preparecnt);
1658 array_verify (EV_A_ (W *)prepares, preparecnt); 2114 array_verify (EV_A_ (W *)prepares, preparecnt);
2115#endif
1659 2116
2117#if EV_CHECK_ENABLE
1660 assert (checkmax >= checkcnt); 2118 assert (checkmax >= checkcnt);
1661 array_verify (EV_A_ (W *)checks, checkcnt); 2119 array_verify (EV_A_ (W *)checks, checkcnt);
2120#endif
1662 2121
1663# if 0 2122# if 0
2123#if EV_CHILD_ENABLE
1664 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2124 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1665 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2125 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2126#endif
1666# endif 2127# endif
1667#endif 2128#endif
1668} 2129}
1669 2130#endif
1670#endif /* multiplicity */
1671 2131
1672#if EV_MULTIPLICITY 2132#if EV_MULTIPLICITY
1673struct ev_loop * 2133struct ev_loop *
1674ev_default_loop_init (unsigned int flags)
1675#else 2134#else
1676int 2135int
2136#endif
1677ev_default_loop (unsigned int flags) 2137ev_default_loop (unsigned int flags)
1678#endif
1679{ 2138{
1680 if (!ev_default_loop_ptr) 2139 if (!ev_default_loop_ptr)
1681 { 2140 {
1682#if EV_MULTIPLICITY 2141#if EV_MULTIPLICITY
1683 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2142 EV_P = ev_default_loop_ptr = &default_loop_struct;
1684#else 2143#else
1685 ev_default_loop_ptr = 1; 2144 ev_default_loop_ptr = 1;
1686#endif 2145#endif
1687 2146
1688 loop_init (EV_A_ flags); 2147 loop_init (EV_A_ flags);
1689 2148
1690 if (ev_backend (EV_A)) 2149 if (ev_backend (EV_A))
1691 { 2150 {
1692#ifndef _WIN32 2151#if EV_CHILD_ENABLE
1693 ev_signal_init (&childev, childcb, SIGCHLD); 2152 ev_signal_init (&childev, childcb, SIGCHLD);
1694 ev_set_priority (&childev, EV_MAXPRI); 2153 ev_set_priority (&childev, EV_MAXPRI);
1695 ev_signal_start (EV_A_ &childev); 2154 ev_signal_start (EV_A_ &childev);
1696 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2155 ev_unref (EV_A); /* child watcher should not keep loop alive */
1697#endif 2156#endif
… …
1702 2161
1703 return ev_default_loop_ptr; 2162 return ev_default_loop_ptr;
1704} 2163}
1705 2164
1706void 2165void
1707ev_default_destroy (void) 2166ev_loop_fork (EV_P)
1708{ 2167{
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 */ 2168 postfork = 1; /* must be in line with ev_default_fork */
1731} 2169}
1732 2170
1733/*****************************************************************************/ 2171/*****************************************************************************/
1734 2172
1735void 2173void
1736ev_invoke (EV_P_ void *w, int revents) 2174ev_invoke (EV_P_ void *w, int revents)
1737{ 2175{
1738 EV_CB_INVOKE ((W)w, revents); 2176 EV_CB_INVOKE ((W)w, revents);
1739} 2177}
1740 2178
1741inline_speed void 2179unsigned int
1742call_pending (EV_P) 2180ev_pending_count (EV_P)
2181{
2182 int pri;
2183 unsigned int count = 0;
2184
2185 for (pri = NUMPRI; pri--; )
2186 count += pendingcnt [pri];
2187
2188 return count;
2189}
2190
2191void noinline
2192ev_invoke_pending (EV_P)
1743{ 2193{
1744 int pri; 2194 int pri;
1745 2195
1746 for (pri = NUMPRI; pri--; ) 2196 for (pri = NUMPRI; pri--; )
1747 while (pendingcnt [pri]) 2197 while (pendingcnt [pri])
1748 { 2198 {
1749 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2199 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1750 2200
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; 2201 p->w->pending = 0;
1756 EV_CB_INVOKE (p->w, p->events); 2202 EV_CB_INVOKE (p->w, p->events);
1757 EV_FREQUENT_CHECK; 2203 EV_FREQUENT_CHECK;
1758 }
1759 } 2204 }
1760} 2205}
1761 2206
1762#if EV_IDLE_ENABLE 2207#if EV_IDLE_ENABLE
2208/* make idle watchers pending. this handles the "call-idle */
2209/* only when higher priorities are idle" logic */
1763inline_size void 2210inline_size void
1764idle_reify (EV_P) 2211idle_reify (EV_P)
1765{ 2212{
1766 if (expect_false (idleall)) 2213 if (expect_false (idleall))
1767 { 2214 {
… …
1780 } 2227 }
1781 } 2228 }
1782} 2229}
1783#endif 2230#endif
1784 2231
2232/* make timers pending */
1785inline_size void 2233inline_size void
1786timers_reify (EV_P) 2234timers_reify (EV_P)
1787{ 2235{
1788 EV_FREQUENT_CHECK; 2236 EV_FREQUENT_CHECK;
1789 2237
… …
1813 EV_FREQUENT_CHECK; 2261 EV_FREQUENT_CHECK;
1814 feed_reverse (EV_A_ (W)w); 2262 feed_reverse (EV_A_ (W)w);
1815 } 2263 }
1816 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2264 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1817 2265
1818 feed_reverse_done (EV_A_ EV_TIMEOUT); 2266 feed_reverse_done (EV_A_ EV_TIMER);
1819 } 2267 }
1820} 2268}
1821 2269
1822#if EV_PERIODIC_ENABLE 2270#if EV_PERIODIC_ENABLE
2271
2272static void noinline
2273periodic_recalc (EV_P_ ev_periodic *w)
2274{
2275 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2276 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2277
2278 /* the above almost always errs on the low side */
2279 while (at <= ev_rt_now)
2280 {
2281 ev_tstamp nat = at + w->interval;
2282
2283 /* when resolution fails us, we use ev_rt_now */
2284 if (expect_false (nat == at))
2285 {
2286 at = ev_rt_now;
2287 break;
2288 }
2289
2290 at = nat;
2291 }
2292
2293 ev_at (w) = at;
2294}
2295
2296/* make periodics pending */
1823inline_size void 2297inline_size void
1824periodics_reify (EV_P) 2298periodics_reify (EV_P)
1825{ 2299{
1826 EV_FREQUENT_CHECK; 2300 EV_FREQUENT_CHECK;
1827 2301
… …
1845 ANHE_at_cache (periodics [HEAP0]); 2319 ANHE_at_cache (periodics [HEAP0]);
1846 downheap (periodics, periodiccnt, HEAP0); 2320 downheap (periodics, periodiccnt, HEAP0);
1847 } 2321 }
1848 else if (w->interval) 2322 else if (w->interval)
1849 { 2323 {
1850 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2324 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]); 2325 ANHE_at_cache (periodics [HEAP0]);
1865 downheap (periodics, periodiccnt, HEAP0); 2326 downheap (periodics, periodiccnt, HEAP0);
1866 } 2327 }
1867 else 2328 else
1868 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2329 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1874 2335
1875 feed_reverse_done (EV_A_ EV_PERIODIC); 2336 feed_reverse_done (EV_A_ EV_PERIODIC);
1876 } 2337 }
1877} 2338}
1878 2339
2340/* simply recalculate all periodics */
2341/* TODO: maybe ensure that at least one event happens when jumping forward? */
1879static void noinline 2342static void noinline
1880periodics_reschedule (EV_P) 2343periodics_reschedule (EV_P)
1881{ 2344{
1882 int i; 2345 int i;
1883 2346
… …
1887 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2350 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1888 2351
1889 if (w->reschedule_cb) 2352 if (w->reschedule_cb)
1890 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2353 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1891 else if (w->interval) 2354 else if (w->interval)
1892 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2355 periodic_recalc (EV_A_ w);
1893 2356
1894 ANHE_at_cache (periodics [i]); 2357 ANHE_at_cache (periodics [i]);
1895 } 2358 }
1896 2359
1897 reheap (periodics, periodiccnt); 2360 reheap (periodics, periodiccnt);
1898} 2361}
1899#endif 2362#endif
1900 2363
2364/* adjust all timers by a given offset */
1901static void noinline 2365static void noinline
1902timers_reschedule (EV_P_ ev_tstamp adjust) 2366timers_reschedule (EV_P_ ev_tstamp adjust)
1903{ 2367{
1904 int i; 2368 int i;
1905 2369
… …
1909 ANHE_w (*he)->at += adjust; 2373 ANHE_w (*he)->at += adjust;
1910 ANHE_at_cache (*he); 2374 ANHE_at_cache (*he);
1911 } 2375 }
1912} 2376}
1913 2377
2378/* fetch new monotonic and realtime times from the kernel */
2379/* also detect if there was a timejump, and act accordingly */
1914inline_speed void 2380inline_speed void
1915time_update (EV_P_ ev_tstamp max_block) 2381time_update (EV_P_ ev_tstamp max_block)
1916{ 2382{
1917 int i;
1918
1919#if EV_USE_MONOTONIC 2383#if EV_USE_MONOTONIC
1920 if (expect_true (have_monotonic)) 2384 if (expect_true (have_monotonic))
1921 { 2385 {
2386 int i;
1922 ev_tstamp odiff = rtmn_diff; 2387 ev_tstamp odiff = rtmn_diff;
1923 2388
1924 mn_now = get_clock (); 2389 mn_now = get_clock ();
1925 2390
1926 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2391 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1942 * doesn't hurt either as we only do this on time-jumps or 2407 * doesn't hurt either as we only do this on time-jumps or
1943 * in the unlikely event of having been preempted here. 2408 * in the unlikely event of having been preempted here.
1944 */ 2409 */
1945 for (i = 4; --i; ) 2410 for (i = 4; --i; )
1946 { 2411 {
2412 ev_tstamp diff;
1947 rtmn_diff = ev_rt_now - mn_now; 2413 rtmn_diff = ev_rt_now - mn_now;
1948 2414
2415 diff = odiff - rtmn_diff;
2416
1949 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2417 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1950 return; /* all is well */ 2418 return; /* all is well */
1951 2419
1952 ev_rt_now = ev_time (); 2420 ev_rt_now = ev_time ();
1953 mn_now = get_clock (); 2421 mn_now = get_clock ();
1954 now_floor = mn_now; 2422 now_floor = mn_now;
… …
1976 2444
1977 mn_now = ev_rt_now; 2445 mn_now = ev_rt_now;
1978 } 2446 }
1979} 2447}
1980 2448
1981static int loop_done;
1982
1983void 2449void
1984ev_loop (EV_P_ int flags) 2450ev_run (EV_P_ int flags)
1985{ 2451{
2452#if EV_FEATURE_API
2453 ++loop_depth;
2454#endif
2455
2456 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2457
1986 loop_done = EVUNLOOP_CANCEL; 2458 loop_done = EVBREAK_CANCEL;
1987 2459
1988 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2460 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1989 2461
1990 do 2462 do
1991 { 2463 {
1992#if EV_VERIFY >= 2 2464#if EV_VERIFY >= 2
1993 ev_loop_verify (EV_A); 2465 ev_verify (EV_A);
1994#endif 2466#endif
1995 2467
1996#ifndef _WIN32 2468#ifndef _WIN32
1997 if (expect_false (curpid)) /* penalise the forking check even more */ 2469 if (expect_false (curpid)) /* penalise the forking check even more */
1998 if (expect_false (getpid () != curpid)) 2470 if (expect_false (getpid () != curpid))
… …
2006 /* we might have forked, so queue fork handlers */ 2478 /* we might have forked, so queue fork handlers */
2007 if (expect_false (postfork)) 2479 if (expect_false (postfork))
2008 if (forkcnt) 2480 if (forkcnt)
2009 { 2481 {
2010 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2482 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2011 call_pending (EV_A); 2483 EV_INVOKE_PENDING;
2012 } 2484 }
2013#endif 2485#endif
2014 2486
2487#if EV_PREPARE_ENABLE
2015 /* queue prepare watchers (and execute them) */ 2488 /* queue prepare watchers (and execute them) */
2016 if (expect_false (preparecnt)) 2489 if (expect_false (preparecnt))
2017 { 2490 {
2018 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2491 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2019 call_pending (EV_A); 2492 EV_INVOKE_PENDING;
2020 } 2493 }
2494#endif
2495
2496 if (expect_false (loop_done))
2497 break;
2021 2498
2022 /* we might have forked, so reify kernel state if necessary */ 2499 /* we might have forked, so reify kernel state if necessary */
2023 if (expect_false (postfork)) 2500 if (expect_false (postfork))
2024 loop_fork (EV_A); 2501 loop_fork (EV_A);
2025 2502
… …
2029 /* calculate blocking time */ 2506 /* calculate blocking time */
2030 { 2507 {
2031 ev_tstamp waittime = 0.; 2508 ev_tstamp waittime = 0.;
2032 ev_tstamp sleeptime = 0.; 2509 ev_tstamp sleeptime = 0.;
2033 2510
2511 /* remember old timestamp for io_blocktime calculation */
2512 ev_tstamp prev_mn_now = mn_now;
2513
2514 /* update time to cancel out callback processing overhead */
2515 time_update (EV_A_ 1e100);
2516
2517 /* from now on, we want a pipe-wake-up */
2518 pipe_write_wanted = 1;
2519
2034 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2520 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2035 { 2521 {
2036 /* update time to cancel out callback processing overhead */
2037 time_update (EV_A_ 1e100);
2038
2039 waittime = MAX_BLOCKTIME; 2522 waittime = MAX_BLOCKTIME;
2040 2523
2041 if (timercnt) 2524 if (timercnt)
2042 { 2525 {
2043 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2526 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2044 if (waittime > to) waittime = to; 2527 if (waittime > to) waittime = to;
2045 } 2528 }
2046 2529
2047#if EV_PERIODIC_ENABLE 2530#if EV_PERIODIC_ENABLE
2048 if (periodiccnt) 2531 if (periodiccnt)
2049 { 2532 {
2050 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2533 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2051 if (waittime > to) waittime = to; 2534 if (waittime > to) waittime = to;
2052 } 2535 }
2053#endif 2536#endif
2054 2537
2538 /* don't let timeouts decrease the waittime below timeout_blocktime */
2055 if (expect_false (waittime < timeout_blocktime)) 2539 if (expect_false (waittime < timeout_blocktime))
2056 waittime = timeout_blocktime; 2540 waittime = timeout_blocktime;
2057 2541
2058 sleeptime = waittime - backend_fudge; 2542 /* at this point, we NEED to wait, so we have to ensure */
2543 /* to pass a minimum nonzero value to the backend */
2544 if (expect_false (waittime < backend_mintime))
2545 waittime = backend_mintime;
2059 2546
2547 /* extra check because io_blocktime is commonly 0 */
2060 if (expect_true (sleeptime > io_blocktime)) 2548 if (expect_false (io_blocktime))
2061 sleeptime = io_blocktime;
2062
2063 if (sleeptime)
2064 { 2549 {
2550 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2551
2552 if (sleeptime > waittime - backend_mintime)
2553 sleeptime = waittime - backend_mintime;
2554
2555 if (expect_true (sleeptime > 0.))
2556 {
2065 ev_sleep (sleeptime); 2557 ev_sleep (sleeptime);
2066 waittime -= sleeptime; 2558 waittime -= sleeptime;
2559 }
2067 } 2560 }
2068 } 2561 }
2069 2562
2563#if EV_FEATURE_API
2070 ++loop_count; 2564 ++loop_count;
2565#endif
2566 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2071 backend_poll (EV_A_ waittime); 2567 backend_poll (EV_A_ waittime);
2568 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2569
2570 pipe_write_wanted = 0;
2571
2572 if (pipe_write_skipped)
2573 {
2574 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2575 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2576 }
2577
2072 2578
2073 /* update ev_rt_now, do magic */ 2579 /* update ev_rt_now, do magic */
2074 time_update (EV_A_ waittime + sleeptime); 2580 time_update (EV_A_ waittime + sleeptime);
2075 } 2581 }
2076 2582
… …
2083#if EV_IDLE_ENABLE 2589#if EV_IDLE_ENABLE
2084 /* queue idle watchers unless other events are pending */ 2590 /* queue idle watchers unless other events are pending */
2085 idle_reify (EV_A); 2591 idle_reify (EV_A);
2086#endif 2592#endif
2087 2593
2594#if EV_CHECK_ENABLE
2088 /* queue check watchers, to be executed first */ 2595 /* queue check watchers, to be executed first */
2089 if (expect_false (checkcnt)) 2596 if (expect_false (checkcnt))
2090 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2597 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2598#endif
2091 2599
2092 call_pending (EV_A); 2600 EV_INVOKE_PENDING;
2093 } 2601 }
2094 while (expect_true ( 2602 while (expect_true (
2095 activecnt 2603 activecnt
2096 && !loop_done 2604 && !loop_done
2097 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2605 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2098 )); 2606 ));
2099 2607
2100 if (loop_done == EVUNLOOP_ONE) 2608 if (loop_done == EVBREAK_ONE)
2101 loop_done = EVUNLOOP_CANCEL; 2609 loop_done = EVBREAK_CANCEL;
2102}
2103 2610
2611#if EV_FEATURE_API
2612 --loop_depth;
2613#endif
2614}
2615
2104void 2616void
2105ev_unloop (EV_P_ int how) 2617ev_break (EV_P_ int how)
2106{ 2618{
2107 loop_done = how; 2619 loop_done = how;
2108} 2620}
2109 2621
2110void 2622void
… …
2137 ev_tstamp mn_prev = mn_now; 2649 ev_tstamp mn_prev = mn_now;
2138 2650
2139 ev_now_update (EV_A); 2651 ev_now_update (EV_A);
2140 timers_reschedule (EV_A_ mn_now - mn_prev); 2652 timers_reschedule (EV_A_ mn_now - mn_prev);
2141#if EV_PERIODIC_ENABLE 2653#if EV_PERIODIC_ENABLE
2654 /* TODO: really do this? */
2142 periodics_reschedule (EV_A); 2655 periodics_reschedule (EV_A);
2143#endif 2656#endif
2144} 2657}
2145 2658
2146/*****************************************************************************/ 2659/*****************************************************************************/
2660/* singly-linked list management, used when the expected list length is short */
2147 2661
2148inline_size void 2662inline_size void
2149wlist_add (WL *head, WL elem) 2663wlist_add (WL *head, WL elem)
2150{ 2664{
2151 elem->next = *head; 2665 elem->next = *head;
… …
2155inline_size void 2669inline_size void
2156wlist_del (WL *head, WL elem) 2670wlist_del (WL *head, WL elem)
2157{ 2671{
2158 while (*head) 2672 while (*head)
2159 { 2673 {
2160 if (*head == elem) 2674 if (expect_true (*head == elem))
2161 { 2675 {
2162 *head = elem->next; 2676 *head = elem->next;
2163 return; 2677 break;
2164 } 2678 }
2165 2679
2166 head = &(*head)->next; 2680 head = &(*head)->next;
2167 } 2681 }
2168} 2682}
2169 2683
2684/* internal, faster, version of ev_clear_pending */
2170inline_speed void 2685inline_speed void
2171clear_pending (EV_P_ W w) 2686clear_pending (EV_P_ W w)
2172{ 2687{
2173 if (w->pending) 2688 if (w->pending)
2174 { 2689 {
2175 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2690 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2176 w->pending = 0; 2691 w->pending = 0;
2177 } 2692 }
2178} 2693}
2179 2694
2180int 2695int
… …
2184 int pending = w_->pending; 2699 int pending = w_->pending;
2185 2700
2186 if (expect_true (pending)) 2701 if (expect_true (pending))
2187 { 2702 {
2188 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2703 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2704 p->w = (W)&pending_w;
2189 w_->pending = 0; 2705 w_->pending = 0;
2190 p->w = 0;
2191 return p->events; 2706 return p->events;
2192 } 2707 }
2193 else 2708 else
2194 return 0; 2709 return 0;
2195} 2710}
2196 2711
2197inline_size void 2712inline_size void
2198pri_adjust (EV_P_ W w) 2713pri_adjust (EV_P_ W w)
2199{ 2714{
2200 int pri = w->priority; 2715 int pri = ev_priority (w);
2201 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2716 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2202 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2717 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2203 w->priority = pri; 2718 ev_set_priority (w, pri);
2204} 2719}
2205 2720
2206inline_speed void 2721inline_speed void
2207ev_start (EV_P_ W w, int active) 2722ev_start (EV_P_ W w, int active)
2208{ 2723{
… …
2227 2742
2228 if (expect_false (ev_is_active (w))) 2743 if (expect_false (ev_is_active (w)))
2229 return; 2744 return;
2230 2745
2231 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2746 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2232 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2747 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2233 2748
2234 EV_FREQUENT_CHECK; 2749 EV_FREQUENT_CHECK;
2235 2750
2236 ev_start (EV_A_ (W)w, 1); 2751 ev_start (EV_A_ (W)w, 1);
2237 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2752 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2238 wlist_add (&anfds[fd].head, (WL)w); 2753 wlist_add (&anfds[fd].head, (WL)w);
2239 2754
2240 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 2755 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2241 w->events &= ~EV__IOFDSET; 2756 w->events &= ~EV__IOFDSET;
2242 2757
2243 EV_FREQUENT_CHECK; 2758 EV_FREQUENT_CHECK;
2244} 2759}
2245 2760
… …
2255 EV_FREQUENT_CHECK; 2770 EV_FREQUENT_CHECK;
2256 2771
2257 wlist_del (&anfds[w->fd].head, (WL)w); 2772 wlist_del (&anfds[w->fd].head, (WL)w);
2258 ev_stop (EV_A_ (W)w); 2773 ev_stop (EV_A_ (W)w);
2259 2774
2260 fd_change (EV_A_ w->fd, 1); 2775 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2261 2776
2262 EV_FREQUENT_CHECK; 2777 EV_FREQUENT_CHECK;
2263} 2778}
2264 2779
2265void noinline 2780void noinline
… …
2307 timers [active] = timers [timercnt + HEAP0]; 2822 timers [active] = timers [timercnt + HEAP0];
2308 adjustheap (timers, timercnt, active); 2823 adjustheap (timers, timercnt, active);
2309 } 2824 }
2310 } 2825 }
2311 2826
2312 EV_FREQUENT_CHECK;
2313
2314 ev_at (w) -= mn_now; 2827 ev_at (w) -= mn_now;
2315 2828
2316 ev_stop (EV_A_ (W)w); 2829 ev_stop (EV_A_ (W)w);
2830
2831 EV_FREQUENT_CHECK;
2317} 2832}
2318 2833
2319void noinline 2834void noinline
2320ev_timer_again (EV_P_ ev_timer *w) 2835ev_timer_again (EV_P_ ev_timer *w)
2321{ 2836{
… …
2339 } 2854 }
2340 2855
2341 EV_FREQUENT_CHECK; 2856 EV_FREQUENT_CHECK;
2342} 2857}
2343 2858
2859ev_tstamp
2860ev_timer_remaining (EV_P_ ev_timer *w)
2861{
2862 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2863}
2864
2344#if EV_PERIODIC_ENABLE 2865#if EV_PERIODIC_ENABLE
2345void noinline 2866void noinline
2346ev_periodic_start (EV_P_ ev_periodic *w) 2867ev_periodic_start (EV_P_ ev_periodic *w)
2347{ 2868{
2348 if (expect_false (ev_is_active (w))) 2869 if (expect_false (ev_is_active (w)))
… …
2351 if (w->reschedule_cb) 2872 if (w->reschedule_cb)
2352 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2873 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2353 else if (w->interval) 2874 else if (w->interval)
2354 { 2875 {
2355 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2876 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2356 /* this formula differs from the one in periodic_reify because we do not always round up */ 2877 periodic_recalc (EV_A_ w);
2357 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2358 } 2878 }
2359 else 2879 else
2360 ev_at (w) = w->offset; 2880 ev_at (w) = w->offset;
2361 2881
2362 EV_FREQUENT_CHECK; 2882 EV_FREQUENT_CHECK;
… …
2394 periodics [active] = periodics [periodiccnt + HEAP0]; 2914 periodics [active] = periodics [periodiccnt + HEAP0];
2395 adjustheap (periodics, periodiccnt, active); 2915 adjustheap (periodics, periodiccnt, active);
2396 } 2916 }
2397 } 2917 }
2398 2918
2399 EV_FREQUENT_CHECK;
2400
2401 ev_stop (EV_A_ (W)w); 2919 ev_stop (EV_A_ (W)w);
2920
2921 EV_FREQUENT_CHECK;
2402} 2922}
2403 2923
2404void noinline 2924void noinline
2405ev_periodic_again (EV_P_ ev_periodic *w) 2925ev_periodic_again (EV_P_ ev_periodic *w)
2406{ 2926{
… …
2412 2932
2413#ifndef SA_RESTART 2933#ifndef SA_RESTART
2414# define SA_RESTART 0 2934# define SA_RESTART 0
2415#endif 2935#endif
2416 2936
2937#if EV_SIGNAL_ENABLE
2938
2417void noinline 2939void noinline
2418ev_signal_start (EV_P_ ev_signal *w) 2940ev_signal_start (EV_P_ ev_signal *w)
2419{ 2941{
2420#if EV_MULTIPLICITY
2421 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2422#endif
2423 if (expect_false (ev_is_active (w))) 2942 if (expect_false (ev_is_active (w)))
2424 return; 2943 return;
2425 2944
2426 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 2945 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2427 2946
2428 evpipe_init (EV_A); 2947#if EV_MULTIPLICITY
2948 assert (("libev: a signal must not be attached to two different loops",
2949 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2429 2950
2430 EV_FREQUENT_CHECK; 2951 signals [w->signum - 1].loop = EV_A;
2952#endif
2431 2953
2954 EV_FREQUENT_CHECK;
2955
2956#if EV_USE_SIGNALFD
2957 if (sigfd == -2)
2432 { 2958 {
2433#ifndef _WIN32 2959 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2434 sigset_t full, prev; 2960 if (sigfd < 0 && errno == EINVAL)
2435 sigfillset (&full); 2961 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2436 sigprocmask (SIG_SETMASK, &full, &prev);
2437#endif
2438 2962
2439 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2963 if (sigfd >= 0)
2964 {
2965 fd_intern (sigfd); /* doing it twice will not hurt */
2440 2966
2441#ifndef _WIN32 2967 sigemptyset (&sigfd_set);
2442 sigprocmask (SIG_SETMASK, &prev, 0); 2968
2443#endif 2969 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2970 ev_set_priority (&sigfd_w, EV_MAXPRI);
2971 ev_io_start (EV_A_ &sigfd_w);
2972 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2973 }
2444 } 2974 }
2975
2976 if (sigfd >= 0)
2977 {
2978 /* TODO: check .head */
2979 sigaddset (&sigfd_set, w->signum);
2980 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2981
2982 signalfd (sigfd, &sigfd_set, 0);
2983 }
2984#endif
2445 2985
2446 ev_start (EV_A_ (W)w, 1); 2986 ev_start (EV_A_ (W)w, 1);
2447 wlist_add (&signals [w->signum - 1].head, (WL)w); 2987 wlist_add (&signals [w->signum - 1].head, (WL)w);
2448 2988
2449 if (!((WL)w)->next) 2989 if (!((WL)w)->next)
2990# if EV_USE_SIGNALFD
2991 if (sigfd < 0) /*TODO*/
2992# endif
2450 { 2993 {
2451#if _WIN32 2994# ifdef _WIN32
2995 evpipe_init (EV_A);
2996
2452 signal (w->signum, ev_sighandler); 2997 signal (w->signum, ev_sighandler);
2453#else 2998# else
2454 struct sigaction sa; 2999 struct sigaction sa;
3000
3001 evpipe_init (EV_A);
3002
2455 sa.sa_handler = ev_sighandler; 3003 sa.sa_handler = ev_sighandler;
2456 sigfillset (&sa.sa_mask); 3004 sigfillset (&sa.sa_mask);
2457 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3005 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2458 sigaction (w->signum, &sa, 0); 3006 sigaction (w->signum, &sa, 0);
3007
3008 if (origflags & EVFLAG_NOSIGMASK)
3009 {
3010 sigemptyset (&sa.sa_mask);
3011 sigaddset (&sa.sa_mask, w->signum);
3012 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3013 }
2459#endif 3014#endif
2460 } 3015 }
2461 3016
2462 EV_FREQUENT_CHECK; 3017 EV_FREQUENT_CHECK;
2463} 3018}
2464 3019
2465void noinline 3020void noinline
… …
2473 3028
2474 wlist_del (&signals [w->signum - 1].head, (WL)w); 3029 wlist_del (&signals [w->signum - 1].head, (WL)w);
2475 ev_stop (EV_A_ (W)w); 3030 ev_stop (EV_A_ (W)w);
2476 3031
2477 if (!signals [w->signum - 1].head) 3032 if (!signals [w->signum - 1].head)
3033 {
3034#if EV_MULTIPLICITY
3035 signals [w->signum - 1].loop = 0; /* unattach from signal */
3036#endif
3037#if EV_USE_SIGNALFD
3038 if (sigfd >= 0)
3039 {
3040 sigset_t ss;
3041
3042 sigemptyset (&ss);
3043 sigaddset (&ss, w->signum);
3044 sigdelset (&sigfd_set, w->signum);
3045
3046 signalfd (sigfd, &sigfd_set, 0);
3047 sigprocmask (SIG_UNBLOCK, &ss, 0);
3048 }
3049 else
3050#endif
2478 signal (w->signum, SIG_DFL); 3051 signal (w->signum, SIG_DFL);
3052 }
2479 3053
2480 EV_FREQUENT_CHECK; 3054 EV_FREQUENT_CHECK;
2481} 3055}
3056
3057#endif
3058
3059#if EV_CHILD_ENABLE
2482 3060
2483void 3061void
2484ev_child_start (EV_P_ ev_child *w) 3062ev_child_start (EV_P_ ev_child *w)
2485{ 3063{
2486#if EV_MULTIPLICITY 3064#if EV_MULTIPLICITY
… …
2490 return; 3068 return;
2491 3069
2492 EV_FREQUENT_CHECK; 3070 EV_FREQUENT_CHECK;
2493 3071
2494 ev_start (EV_A_ (W)w, 1); 3072 ev_start (EV_A_ (W)w, 1);
2495 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3073 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2496 3074
2497 EV_FREQUENT_CHECK; 3075 EV_FREQUENT_CHECK;
2498} 3076}
2499 3077
2500void 3078void
… …
2504 if (expect_false (!ev_is_active (w))) 3082 if (expect_false (!ev_is_active (w)))
2505 return; 3083 return;
2506 3084
2507 EV_FREQUENT_CHECK; 3085 EV_FREQUENT_CHECK;
2508 3086
2509 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3087 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2510 ev_stop (EV_A_ (W)w); 3088 ev_stop (EV_A_ (W)w);
2511 3089
2512 EV_FREQUENT_CHECK; 3090 EV_FREQUENT_CHECK;
2513} 3091}
3092
3093#endif
2514 3094
2515#if EV_STAT_ENABLE 3095#if EV_STAT_ENABLE
2516 3096
2517# ifdef _WIN32 3097# ifdef _WIN32
2518# undef lstat 3098# undef lstat
… …
2524#define MIN_STAT_INTERVAL 0.1074891 3104#define MIN_STAT_INTERVAL 0.1074891
2525 3105
2526static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3106static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2527 3107
2528#if EV_USE_INOTIFY 3108#if EV_USE_INOTIFY
2529# define EV_INOTIFY_BUFSIZE 8192 3109
3110/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3111# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2530 3112
2531static void noinline 3113static void noinline
2532infy_add (EV_P_ ev_stat *w) 3114infy_add (EV_P_ ev_stat *w)
2533{ 3115{
2534 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3116 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2535 3117
2536 if (w->wd < 0) 3118 if (w->wd >= 0)
3119 {
3120 struct statfs sfs;
3121
3122 /* now local changes will be tracked by inotify, but remote changes won't */
3123 /* unless the filesystem is known to be local, we therefore still poll */
3124 /* also do poll on <2.6.25, but with normal frequency */
3125
3126 if (!fs_2625)
3127 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3128 else if (!statfs (w->path, &sfs)
3129 && (sfs.f_type == 0x1373 /* devfs */
3130 || sfs.f_type == 0xEF53 /* ext2/3 */
3131 || sfs.f_type == 0x3153464a /* jfs */
3132 || sfs.f_type == 0x52654973 /* reiser3 */
3133 || sfs.f_type == 0x01021994 /* tempfs */
3134 || sfs.f_type == 0x58465342 /* xfs */))
3135 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3136 else
3137 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2537 { 3138 }
3139 else
3140 {
3141 /* can't use inotify, continue to stat */
2538 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3142 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2539 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2540 3143
2541 /* monitor some parent directory for speedup hints */ 3144 /* if path is not there, monitor some parent directory for speedup hints */
2542 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3145 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2543 /* but an efficiency issue only */ 3146 /* but an efficiency issue only */
2544 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3147 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2545 { 3148 {
2546 char path [4096]; 3149 char path [4096];
… …
2556 if (!pend || pend == path) 3159 if (!pend || pend == path)
2557 break; 3160 break;
2558 3161
2559 *pend = 0; 3162 *pend = 0;
2560 w->wd = inotify_add_watch (fs_fd, path, mask); 3163 w->wd = inotify_add_watch (fs_fd, path, mask);
2561 } 3164 }
2562 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3165 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2563 } 3166 }
2564 } 3167 }
2565 3168
2566 if (w->wd >= 0) 3169 if (w->wd >= 0)
2567 {
2568 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3170 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2569 3171
2570 /* now local changes will be tracked by inotify, but remote changes won't */ 3172 /* now re-arm timer, if required */
2571 /* unless the filesystem it known to be local, we therefore still poll */ 3173 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2572 /* also do poll on <2.6.25, but with normal frequency */
2573 struct statfs sfs;
2574
2575 if (fs_2625 && !statfs (w->path, &sfs))
2576 if (sfs.f_type == 0x1373 /* devfs */
2577 || sfs.f_type == 0xEF53 /* ext2/3 */
2578 || sfs.f_type == 0x3153464a /* jfs */
2579 || sfs.f_type == 0x52654973 /* reiser3 */
2580 || sfs.f_type == 0x01021994 /* tempfs */
2581 || sfs.f_type == 0x58465342 /* xfs */)
2582 return;
2583
2584 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2585 ev_timer_again (EV_A_ &w->timer); 3174 ev_timer_again (EV_A_ &w->timer);
2586 } 3175 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2587} 3176}
2588 3177
2589static void noinline 3178static void noinline
2590infy_del (EV_P_ ev_stat *w) 3179infy_del (EV_P_ ev_stat *w)
2591{ 3180{
… …
2594 3183
2595 if (wd < 0) 3184 if (wd < 0)
2596 return; 3185 return;
2597 3186
2598 w->wd = -2; 3187 w->wd = -2;
2599 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3188 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2600 wlist_del (&fs_hash [slot].head, (WL)w); 3189 wlist_del (&fs_hash [slot].head, (WL)w);
2601 3190
2602 /* remove this watcher, if others are watching it, they will rearm */ 3191 /* remove this watcher, if others are watching it, they will rearm */
2603 inotify_rm_watch (fs_fd, wd); 3192 inotify_rm_watch (fs_fd, wd);
2604} 3193}
… …
2606static void noinline 3195static void noinline
2607infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3196infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2608{ 3197{
2609 if (slot < 0) 3198 if (slot < 0)
2610 /* overflow, need to check for all hash slots */ 3199 /* overflow, need to check for all hash slots */
2611 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3200 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2612 infy_wd (EV_A_ slot, wd, ev); 3201 infy_wd (EV_A_ slot, wd, ev);
2613 else 3202 else
2614 { 3203 {
2615 WL w_; 3204 WL w_;
2616 3205
2617 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3206 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2618 { 3207 {
2619 ev_stat *w = (ev_stat *)w_; 3208 ev_stat *w = (ev_stat *)w_;
2620 w_ = w_->next; /* lets us remove this watcher and all before it */ 3209 w_ = w_->next; /* lets us remove this watcher and all before it */
2621 3210
2622 if (w->wd == wd || wd == -1) 3211 if (w->wd == wd || wd == -1)
2623 { 3212 {
2624 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3213 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2625 { 3214 {
2626 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3215 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2627 w->wd = -1; 3216 w->wd = -1;
2628 infy_add (EV_A_ w); /* re-add, no matter what */ 3217 infy_add (EV_A_ w); /* re-add, no matter what */
2629 } 3218 }
2630 3219
2631 stat_timer_cb (EV_A_ &w->timer, 0); 3220 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2636 3225
2637static void 3226static void
2638infy_cb (EV_P_ ev_io *w, int revents) 3227infy_cb (EV_P_ ev_io *w, int revents)
2639{ 3228{
2640 char buf [EV_INOTIFY_BUFSIZE]; 3229 char buf [EV_INOTIFY_BUFSIZE];
2641 struct inotify_event *ev = (struct inotify_event *)buf;
2642 int ofs; 3230 int ofs;
2643 int len = read (fs_fd, buf, sizeof (buf)); 3231 int len = read (fs_fd, buf, sizeof (buf));
2644 3232
2645 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3233 for (ofs = 0; ofs < len; )
3234 {
3235 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2646 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3236 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3237 ofs += sizeof (struct inotify_event) + ev->len;
3238 }
2647} 3239}
2648 3240
2649inline_size void 3241inline_size void
2650check_2625 (EV_P) 3242ev_check_2625 (EV_P)
2651{ 3243{
2652 /* kernels < 2.6.25 are borked 3244 /* kernels < 2.6.25 are borked
2653 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3245 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2654 */ 3246 */
2655 struct utsname buf; 3247 if (ev_linux_version () < 0x020619)
2656 int major, minor, micro;
2657
2658 if (uname (&buf))
2659 return; 3248 return;
2660 3249
2661 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2662 return;
2663
2664 if (major < 2
2665 || (major == 2 && minor < 6)
2666 || (major == 2 && minor == 6 && micro < 25))
2667 return;
2668
2669 fs_2625 = 1; 3250 fs_2625 = 1;
3251}
3252
3253inline_size int
3254infy_newfd (void)
3255{
3256#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3257 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3258 if (fd >= 0)
3259 return fd;
3260#endif
3261 return inotify_init ();
2670} 3262}
2671 3263
2672inline_size void 3264inline_size void
2673infy_init (EV_P) 3265infy_init (EV_P)
2674{ 3266{
2675 if (fs_fd != -2) 3267 if (fs_fd != -2)
2676 return; 3268 return;
2677 3269
2678 fs_fd = -1; 3270 fs_fd = -1;
2679 3271
2680 check_2625 (EV_A); 3272 ev_check_2625 (EV_A);
2681 3273
2682 fs_fd = inotify_init (); 3274 fs_fd = infy_newfd ();
2683 3275
2684 if (fs_fd >= 0) 3276 if (fs_fd >= 0)
2685 { 3277 {
3278 fd_intern (fs_fd);
2686 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3279 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2687 ev_set_priority (&fs_w, EV_MAXPRI); 3280 ev_set_priority (&fs_w, EV_MAXPRI);
2688 ev_io_start (EV_A_ &fs_w); 3281 ev_io_start (EV_A_ &fs_w);
3282 ev_unref (EV_A);
2689 } 3283 }
2690} 3284}
2691 3285
2692inline_size void 3286inline_size void
2693infy_fork (EV_P) 3287infy_fork (EV_P)
… …
2695 int slot; 3289 int slot;
2696 3290
2697 if (fs_fd < 0) 3291 if (fs_fd < 0)
2698 return; 3292 return;
2699 3293
3294 ev_ref (EV_A);
3295 ev_io_stop (EV_A_ &fs_w);
2700 close (fs_fd); 3296 close (fs_fd);
2701 fs_fd = inotify_init (); 3297 fs_fd = infy_newfd ();
2702 3298
3299 if (fs_fd >= 0)
3300 {
3301 fd_intern (fs_fd);
3302 ev_io_set (&fs_w, fs_fd, EV_READ);
3303 ev_io_start (EV_A_ &fs_w);
3304 ev_unref (EV_A);
3305 }
3306
2703 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3307 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2704 { 3308 {
2705 WL w_ = fs_hash [slot].head; 3309 WL w_ = fs_hash [slot].head;
2706 fs_hash [slot].head = 0; 3310 fs_hash [slot].head = 0;
2707 3311
2708 while (w_) 3312 while (w_)
… …
2713 w->wd = -1; 3317 w->wd = -1;
2714 3318
2715 if (fs_fd >= 0) 3319 if (fs_fd >= 0)
2716 infy_add (EV_A_ w); /* re-add, no matter what */ 3320 infy_add (EV_A_ w); /* re-add, no matter what */
2717 else 3321 else
3322 {
3323 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3324 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2718 ev_timer_again (EV_A_ &w->timer); 3325 ev_timer_again (EV_A_ &w->timer);
3326 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3327 }
2719 } 3328 }
2720 } 3329 }
2721} 3330}
2722 3331
2723#endif 3332#endif
… …
2740static void noinline 3349static void noinline
2741stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3350stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2742{ 3351{
2743 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3352 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2744 3353
2745 /* we copy this here each the time so that */ 3354 ev_statdata prev = w->attr;
2746 /* prev has the old value when the callback gets invoked */
2747 w->prev = w->attr;
2748 ev_stat_stat (EV_A_ w); 3355 ev_stat_stat (EV_A_ w);
2749 3356
2750 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3357 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2751 if ( 3358 if (
2752 w->prev.st_dev != w->attr.st_dev 3359 prev.st_dev != w->attr.st_dev
2753 || w->prev.st_ino != w->attr.st_ino 3360 || prev.st_ino != w->attr.st_ino
2754 || w->prev.st_mode != w->attr.st_mode 3361 || prev.st_mode != w->attr.st_mode
2755 || w->prev.st_nlink != w->attr.st_nlink 3362 || prev.st_nlink != w->attr.st_nlink
2756 || w->prev.st_uid != w->attr.st_uid 3363 || prev.st_uid != w->attr.st_uid
2757 || w->prev.st_gid != w->attr.st_gid 3364 || prev.st_gid != w->attr.st_gid
2758 || w->prev.st_rdev != w->attr.st_rdev 3365 || prev.st_rdev != w->attr.st_rdev
2759 || w->prev.st_size != w->attr.st_size 3366 || prev.st_size != w->attr.st_size
2760 || w->prev.st_atime != w->attr.st_atime 3367 || prev.st_atime != w->attr.st_atime
2761 || w->prev.st_mtime != w->attr.st_mtime 3368 || prev.st_mtime != w->attr.st_mtime
2762 || w->prev.st_ctime != w->attr.st_ctime 3369 || prev.st_ctime != w->attr.st_ctime
2763 ) { 3370 ) {
3371 /* we only update w->prev on actual differences */
3372 /* in case we test more often than invoke the callback, */
3373 /* to ensure that prev is always different to attr */
3374 w->prev = prev;
3375
2764 #if EV_USE_INOTIFY 3376 #if EV_USE_INOTIFY
2765 if (fs_fd >= 0) 3377 if (fs_fd >= 0)
2766 { 3378 {
2767 infy_del (EV_A_ w); 3379 infy_del (EV_A_ w);
2768 infy_add (EV_A_ w); 3380 infy_add (EV_A_ w);
… …
2793 3405
2794 if (fs_fd >= 0) 3406 if (fs_fd >= 0)
2795 infy_add (EV_A_ w); 3407 infy_add (EV_A_ w);
2796 else 3408 else
2797#endif 3409#endif
3410 {
2798 ev_timer_again (EV_A_ &w->timer); 3411 ev_timer_again (EV_A_ &w->timer);
3412 ev_unref (EV_A);
3413 }
2799 3414
2800 ev_start (EV_A_ (W)w, 1); 3415 ev_start (EV_A_ (W)w, 1);
2801 3416
2802 EV_FREQUENT_CHECK; 3417 EV_FREQUENT_CHECK;
2803} 3418}
… …
2812 EV_FREQUENT_CHECK; 3427 EV_FREQUENT_CHECK;
2813 3428
2814#if EV_USE_INOTIFY 3429#if EV_USE_INOTIFY
2815 infy_del (EV_A_ w); 3430 infy_del (EV_A_ w);
2816#endif 3431#endif
3432
3433 if (ev_is_active (&w->timer))
3434 {
3435 ev_ref (EV_A);
2817 ev_timer_stop (EV_A_ &w->timer); 3436 ev_timer_stop (EV_A_ &w->timer);
3437 }
2818 3438
2819 ev_stop (EV_A_ (W)w); 3439 ev_stop (EV_A_ (W)w);
2820 3440
2821 EV_FREQUENT_CHECK; 3441 EV_FREQUENT_CHECK;
2822} 3442}
… …
2867 3487
2868 EV_FREQUENT_CHECK; 3488 EV_FREQUENT_CHECK;
2869} 3489}
2870#endif 3490#endif
2871 3491
3492#if EV_PREPARE_ENABLE
2872void 3493void
2873ev_prepare_start (EV_P_ ev_prepare *w) 3494ev_prepare_start (EV_P_ ev_prepare *w)
2874{ 3495{
2875 if (expect_false (ev_is_active (w))) 3496 if (expect_false (ev_is_active (w)))
2876 return; 3497 return;
… …
2902 3523
2903 ev_stop (EV_A_ (W)w); 3524 ev_stop (EV_A_ (W)w);
2904 3525
2905 EV_FREQUENT_CHECK; 3526 EV_FREQUENT_CHECK;
2906} 3527}
3528#endif
2907 3529
3530#if EV_CHECK_ENABLE
2908void 3531void
2909ev_check_start (EV_P_ ev_check *w) 3532ev_check_start (EV_P_ ev_check *w)
2910{ 3533{
2911 if (expect_false (ev_is_active (w))) 3534 if (expect_false (ev_is_active (w)))
2912 return; 3535 return;
… …
2938 3561
2939 ev_stop (EV_A_ (W)w); 3562 ev_stop (EV_A_ (W)w);
2940 3563
2941 EV_FREQUENT_CHECK; 3564 EV_FREQUENT_CHECK;
2942} 3565}
3566#endif
2943 3567
2944#if EV_EMBED_ENABLE 3568#if EV_EMBED_ENABLE
2945void noinline 3569void noinline
2946ev_embed_sweep (EV_P_ ev_embed *w) 3570ev_embed_sweep (EV_P_ ev_embed *w)
2947{ 3571{
2948 ev_loop (w->other, EVLOOP_NONBLOCK); 3572 ev_run (w->other, EVRUN_NOWAIT);
2949} 3573}
2950 3574
2951static void 3575static void
2952embed_io_cb (EV_P_ ev_io *io, int revents) 3576embed_io_cb (EV_P_ ev_io *io, int revents)
2953{ 3577{
2954 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3578 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2955 3579
2956 if (ev_cb (w)) 3580 if (ev_cb (w))
2957 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3581 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2958 else 3582 else
2959 ev_loop (w->other, EVLOOP_NONBLOCK); 3583 ev_run (w->other, EVRUN_NOWAIT);
2960} 3584}
2961 3585
2962static void 3586static void
2963embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3587embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2964{ 3588{
2965 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3589 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2966 3590
2967 { 3591 {
2968 struct ev_loop *loop = w->other; 3592 EV_P = w->other;
2969 3593
2970 while (fdchangecnt) 3594 while (fdchangecnt)
2971 { 3595 {
2972 fd_reify (EV_A); 3596 fd_reify (EV_A);
2973 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3597 ev_run (EV_A_ EVRUN_NOWAIT);
2974 } 3598 }
2975 } 3599 }
2976} 3600}
2977 3601
2978static void 3602static void
… …
2981 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3605 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2982 3606
2983 ev_embed_stop (EV_A_ w); 3607 ev_embed_stop (EV_A_ w);
2984 3608
2985 { 3609 {
2986 struct ev_loop *loop = w->other; 3610 EV_P = w->other;
2987 3611
2988 ev_loop_fork (EV_A); 3612 ev_loop_fork (EV_A);
2989 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3613 ev_run (EV_A_ EVRUN_NOWAIT);
2990 } 3614 }
2991 3615
2992 ev_embed_start (EV_A_ w); 3616 ev_embed_start (EV_A_ w);
2993} 3617}
2994 3618
… …
3005{ 3629{
3006 if (expect_false (ev_is_active (w))) 3630 if (expect_false (ev_is_active (w)))
3007 return; 3631 return;
3008 3632
3009 { 3633 {
3010 struct ev_loop *loop = w->other; 3634 EV_P = w->other;
3011 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3635 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3012 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3636 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3013 } 3637 }
3014 3638
3015 EV_FREQUENT_CHECK; 3639 EV_FREQUENT_CHECK;
… …
3042 3666
3043 ev_io_stop (EV_A_ &w->io); 3667 ev_io_stop (EV_A_ &w->io);
3044 ev_prepare_stop (EV_A_ &w->prepare); 3668 ev_prepare_stop (EV_A_ &w->prepare);
3045 ev_fork_stop (EV_A_ &w->fork); 3669 ev_fork_stop (EV_A_ &w->fork);
3046 3670
3671 ev_stop (EV_A_ (W)w);
3672
3047 EV_FREQUENT_CHECK; 3673 EV_FREQUENT_CHECK;
3048} 3674}
3049#endif 3675#endif
3050 3676
3051#if EV_FORK_ENABLE 3677#if EV_FORK_ENABLE
… …
3084 3710
3085 EV_FREQUENT_CHECK; 3711 EV_FREQUENT_CHECK;
3086} 3712}
3087#endif 3713#endif
3088 3714
3089#if EV_ASYNC_ENABLE 3715#if EV_CLEANUP_ENABLE
3090void 3716void
3091ev_async_start (EV_P_ ev_async *w) 3717ev_cleanup_start (EV_P_ ev_cleanup *w)
3092{ 3718{
3093 if (expect_false (ev_is_active (w))) 3719 if (expect_false (ev_is_active (w)))
3094 return; 3720 return;
3721
3722 EV_FREQUENT_CHECK;
3723
3724 ev_start (EV_A_ (W)w, ++cleanupcnt);
3725 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3726 cleanups [cleanupcnt - 1] = w;
3727
3728 /* cleanup watchers should never keep a refcount on the loop */
3729 ev_unref (EV_A);
3730 EV_FREQUENT_CHECK;
3731}
3732
3733void
3734ev_cleanup_stop (EV_P_ ev_cleanup *w)
3735{
3736 clear_pending (EV_A_ (W)w);
3737 if (expect_false (!ev_is_active (w)))
3738 return;
3739
3740 EV_FREQUENT_CHECK;
3741 ev_ref (EV_A);
3742
3743 {
3744 int active = ev_active (w);
3745
3746 cleanups [active - 1] = cleanups [--cleanupcnt];
3747 ev_active (cleanups [active - 1]) = active;
3748 }
3749
3750 ev_stop (EV_A_ (W)w);
3751
3752 EV_FREQUENT_CHECK;
3753}
3754#endif
3755
3756#if EV_ASYNC_ENABLE
3757void
3758ev_async_start (EV_P_ ev_async *w)
3759{
3760 if (expect_false (ev_is_active (w)))
3761 return;
3762
3763 w->sent = 0;
3095 3764
3096 evpipe_init (EV_A); 3765 evpipe_init (EV_A);
3097 3766
3098 EV_FREQUENT_CHECK; 3767 EV_FREQUENT_CHECK;
3099 3768
… …
3127 3796
3128void 3797void
3129ev_async_send (EV_P_ ev_async *w) 3798ev_async_send (EV_P_ ev_async *w)
3130{ 3799{
3131 w->sent = 1; 3800 w->sent = 1;
3132 evpipe_write (EV_A_ &gotasync); 3801 evpipe_write (EV_A_ &async_pending);
3133} 3802}
3134#endif 3803#endif
3135 3804
3136/*****************************************************************************/ 3805/*****************************************************************************/
3137 3806
… …
3177{ 3846{
3178 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3847 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3179 3848
3180 if (expect_false (!once)) 3849 if (expect_false (!once))
3181 { 3850 {
3182 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3851 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3183 return; 3852 return;
3184 } 3853 }
3185 3854
3186 once->cb = cb; 3855 once->cb = cb;
3187 once->arg = arg; 3856 once->arg = arg;
… …
3201 } 3870 }
3202} 3871}
3203 3872
3204/*****************************************************************************/ 3873/*****************************************************************************/
3205 3874
3206#if 0 3875#if EV_WALK_ENABLE
3207void 3876void
3208ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 3877ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3209{ 3878{
3210 int i, j; 3879 int i, j;
3211 ev_watcher_list *wl, *wn; 3880 ev_watcher_list *wl, *wn;
… …
3227#if EV_USE_INOTIFY 3896#if EV_USE_INOTIFY
3228 if (ev_cb ((ev_io *)wl) == infy_cb) 3897 if (ev_cb ((ev_io *)wl) == infy_cb)
3229 ; 3898 ;
3230 else 3899 else
3231#endif 3900#endif
3232 if ((ev_io *)wl != &pipeev) 3901 if ((ev_io *)wl != &pipe_w)
3233 if (types & EV_IO) 3902 if (types & EV_IO)
3234 cb (EV_A_ EV_IO, wl); 3903 cb (EV_A_ EV_IO, wl);
3235 3904
3236 wl = wn; 3905 wl = wn;
3237 } 3906 }
… …
3274 if (types & EV_ASYNC) 3943 if (types & EV_ASYNC)
3275 for (i = asynccnt; i--; ) 3944 for (i = asynccnt; i--; )
3276 cb (EV_A_ EV_ASYNC, asyncs [i]); 3945 cb (EV_A_ EV_ASYNC, asyncs [i]);
3277#endif 3946#endif
3278 3947
3948#if EV_PREPARE_ENABLE
3279 if (types & EV_PREPARE) 3949 if (types & EV_PREPARE)
3280 for (i = preparecnt; i--; ) 3950 for (i = preparecnt; i--; )
3281#if EV_EMBED_ENABLE 3951# if EV_EMBED_ENABLE
3282 if (ev_cb (prepares [i]) != embed_prepare_cb) 3952 if (ev_cb (prepares [i]) != embed_prepare_cb)
3283#endif 3953# endif
3284 cb (EV_A_ EV_PREPARE, prepares [i]); 3954 cb (EV_A_ EV_PREPARE, prepares [i]);
3955#endif
3285 3956
3957#if EV_CHECK_ENABLE
3286 if (types & EV_CHECK) 3958 if (types & EV_CHECK)
3287 for (i = checkcnt; i--; ) 3959 for (i = checkcnt; i--; )
3288 cb (EV_A_ EV_CHECK, checks [i]); 3960 cb (EV_A_ EV_CHECK, checks [i]);
3961#endif
3289 3962
3963#if EV_SIGNAL_ENABLE
3290 if (types & EV_SIGNAL) 3964 if (types & EV_SIGNAL)
3291 for (i = 0; i < signalmax; ++i) 3965 for (i = 0; i < EV_NSIG - 1; ++i)
3292 for (wl = signals [i].head; wl; ) 3966 for (wl = signals [i].head; wl; )
3293 { 3967 {
3294 wn = wl->next; 3968 wn = wl->next;
3295 cb (EV_A_ EV_SIGNAL, wl); 3969 cb (EV_A_ EV_SIGNAL, wl);
3296 wl = wn; 3970 wl = wn;
3297 } 3971 }
3972#endif
3298 3973
3974#if EV_CHILD_ENABLE
3299 if (types & EV_CHILD) 3975 if (types & EV_CHILD)
3300 for (i = EV_PID_HASHSIZE; i--; ) 3976 for (i = (EV_PID_HASHSIZE); i--; )
3301 for (wl = childs [i]; wl; ) 3977 for (wl = childs [i]; wl; )
3302 { 3978 {
3303 wn = wl->next; 3979 wn = wl->next;
3304 cb (EV_A_ EV_CHILD, wl); 3980 cb (EV_A_ EV_CHILD, wl);
3305 wl = wn; 3981 wl = wn;
3306 } 3982 }
3983#endif
3307/* EV_STAT 0x00001000 /* stat data changed */ 3984/* EV_STAT 0x00001000 /* stat data changed */
3308/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 3985/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3309} 3986}
3310#endif 3987#endif
3311 3988
3312#if EV_MULTIPLICITY 3989#if EV_MULTIPLICITY
3313 #include "ev_wrap.h" 3990 #include "ev_wrap.h"
3314#endif 3991#endif
3315 3992
3316#ifdef __cplusplus 3993EV_CPP(})
3317}
3318#endif
3319 3994

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