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Comparing libev/ev.c (file contents):
Revision 1.289 by root, Sat Jun 6 11:13:16 2009 UTC vs.
Revision 1.384 by root, Wed Jul 20 00:58:45 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 */
367 465
368#if __GNUC__ >= 4 466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
369# define expect(expr,value) __builtin_expect ((expr),(value)) 467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
370# define noinline __attribute__ ((noinline)) 468
469/* the following are taken from libecb */
470/* ecb.h start */
471
472/* many compilers define _GNUC_ to some versions but then only implement
473 * what their idiot authors think are the "more important" extensions,
474 * causing enourmous grief in return for some better fake benchmark numbers.
475 * or so.
476 * we try to detect these and simply assume they are not gcc - if they have
477 * an issue with that they should have done it right in the first place.
478 */
479#ifndef ECB_GCC_VERSION
480 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
481 #define ECB_GCC_VERSION(major,minor) 0
482 #else
483 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
484 #endif
485#endif
486
487#if __cplusplus
488 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__
491#elif ECB_C99
492 #define ecb_inline static inline
371#else 493#else
372# define expect(expr,value) (expr) 494 #define ecb_inline static
373# define noinline
374# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
375# define inline
376# endif 495#endif
496
497#ifndef ECB_MEMORY_FENCE
498 #if ECB_GCC_VERSION(2,5)
499 #if __x86
500 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
501 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
502 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE /* better be safe than sorry */
503 #elif __amd64
504 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
505 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
506 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence")
507 #endif
377#endif 508 #endif
509#endif
378 510
511#ifndef ECB_MEMORY_FENCE
512 #if ECB_GCC_VERSION(4,4)
513 #define ECB_MEMORY_FENCE __sync_synchronize ()
514 #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); })
515 #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); })
516 #elif _MSC_VER >= 1400
517 #define ECB_MEMORY_FENCE do { } while (0)
518 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
519 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
520 #elif defined(_WIN32) && defined(MemoryBarrier)
521 #define ECB_MEMORY_FENCE MemoryBarrier ()
522 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
523 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
524 #endif
525#endif
526
527#ifndef ECB_MEMORY_FENCE
528 #include <pthread.h>
529
530 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
531 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
532 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
533 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
534#endif
535
536#if ECB_GCC_VERSION(3,1)
537 #define ecb_attribute(attrlist) __attribute__(attrlist)
538 #define ecb_is_constant(expr) __builtin_constant_p (expr)
539 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
540 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
541#else
542 #define ecb_attribute(attrlist)
543 #define ecb_is_constant(expr) 0
544 #define ecb_expect(expr,value) (expr)
545 #define ecb_prefetch(addr,rw,locality)
546#endif
547
548#define ecb_noinline ecb_attribute ((__noinline__))
549#define ecb_noreturn ecb_attribute ((__noreturn__))
550#define ecb_unused ecb_attribute ((__unused__))
551#define ecb_const ecb_attribute ((__const__))
552#define ecb_pure ecb_attribute ((__pure__))
553
554#if ECB_GCC_VERSION(4,3)
555 #define ecb_artificial ecb_attribute ((__artificial__))
556 #define ecb_hot ecb_attribute ((__hot__))
557 #define ecb_cold ecb_attribute ((__cold__))
558#else
559 #define ecb_artificial
560 #define ecb_hot
561 #define ecb_cold
562#endif
563
564/* put around conditional expressions if you are very sure that the */
565/* expression is mostly true or mostly false. note that these return */
566/* booleans, not the expression. */
379#define expect_false(expr) expect ((expr) != 0, 0) 567#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 568#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
569/* ecb.h end */
570
571#define expect_false(cond) ecb_expect_false (cond)
572#define expect_true(cond) ecb_expect_true (cond)
573#define noinline ecb_noinline
574
381#define inline_size static inline 575#define inline_size ecb_inline
382 576
383#if EV_MINIMAL 577#if EV_FEATURE_CODE
578# define inline_speed ecb_inline
579#else
384# define inline_speed static noinline 580# define inline_speed static noinline
581#endif
582
583#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
584
585#if EV_MINPRI == EV_MAXPRI
586# define ABSPRI(w) (((W)w), 0)
385#else 587#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) 588# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
589#endif
391 590
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 591#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 592#define EMPTY2(a,b) /* used to suppress some warnings */
394 593
395typedef ev_watcher *W; 594typedef ev_watcher *W;
… …
399#define ev_active(w) ((W)(w))->active 598#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 599#define ev_at(w) ((WT)(w))->at
401 600
402#if EV_USE_REALTIME 601#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 602/* 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 */ 603/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 604static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 605#endif
407 606
408#if EV_USE_MONOTONIC 607#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 608static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 609#endif
411 610
611#ifndef EV_FD_TO_WIN32_HANDLE
612# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
613#endif
614#ifndef EV_WIN32_HANDLE_TO_FD
615# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
616#endif
617#ifndef EV_WIN32_CLOSE_FD
618# define EV_WIN32_CLOSE_FD(fd) close (fd)
619#endif
620
412#ifdef _WIN32 621#ifdef _WIN32
413# include "ev_win32.c" 622# include "ev_win32.c"
414#endif 623#endif
415 624
416/*****************************************************************************/ 625/*****************************************************************************/
417 626
627/* define a suitable floor function (only used by periodics atm) */
628
629#if EV_USE_FLOOR
630# include <math.h>
631# define ev_floor(v) floor (v)
632#else
633
634#include <float.h>
635
636/* a floor() replacement function, should be independent of ev_tstamp type */
637static ev_tstamp noinline
638ev_floor (ev_tstamp v)
639{
640 /* the choice of shift factor is not terribly important */
641#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
642 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
643#else
644 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
645#endif
646
647 /* argument too large for an unsigned long? */
648 if (expect_false (v >= shift))
649 {
650 ev_tstamp f;
651
652 if (v == v - 1.)
653 return v; /* very large number */
654
655 f = shift * ev_floor (v * (1. / shift));
656 return f + ev_floor (v - f);
657 }
658
659 /* special treatment for negative args? */
660 if (expect_false (v < 0.))
661 {
662 ev_tstamp f = -ev_floor (-v);
663
664 return f - (f == v ? 0 : 1);
665 }
666
667 /* fits into an unsigned long */
668 return (unsigned long)v;
669}
670
671#endif
672
673/*****************************************************************************/
674
675#ifdef __linux
676# include <sys/utsname.h>
677#endif
678
679static unsigned int noinline ecb_cold
680ev_linux_version (void)
681{
682#ifdef __linux
683 unsigned int v = 0;
684 struct utsname buf;
685 int i;
686 char *p = buf.release;
687
688 if (uname (&buf))
689 return 0;
690
691 for (i = 3+1; --i; )
692 {
693 unsigned int c = 0;
694
695 for (;;)
696 {
697 if (*p >= '0' && *p <= '9')
698 c = c * 10 + *p++ - '0';
699 else
700 {
701 p += *p == '.';
702 break;
703 }
704 }
705
706 v = (v << 8) | c;
707 }
708
709 return v;
710#else
711 return 0;
712#endif
713}
714
715/*****************************************************************************/
716
717#if EV_AVOID_STDIO
718static void noinline ecb_cold
719ev_printerr (const char *msg)
720{
721 write (STDERR_FILENO, msg, strlen (msg));
722}
723#endif
724
418static void (*syserr_cb)(const char *msg); 725static void (*syserr_cb)(const char *msg);
419 726
420void 727void ecb_cold
421ev_set_syserr_cb (void (*cb)(const char *msg)) 728ev_set_syserr_cb (void (*cb)(const char *msg))
422{ 729{
423 syserr_cb = cb; 730 syserr_cb = cb;
424} 731}
425 732
426static void noinline 733static void noinline ecb_cold
427ev_syserr (const char *msg) 734ev_syserr (const char *msg)
428{ 735{
429 if (!msg) 736 if (!msg)
430 msg = "(libev) system error"; 737 msg = "(libev) system error";
431 738
432 if (syserr_cb) 739 if (syserr_cb)
433 syserr_cb (msg); 740 syserr_cb (msg);
434 else 741 else
435 { 742 {
743#if EV_AVOID_STDIO
744 ev_printerr (msg);
745 ev_printerr (": ");
746 ev_printerr (strerror (errno));
747 ev_printerr ("\n");
748#else
436 perror (msg); 749 perror (msg);
750#endif
437 abort (); 751 abort ();
438 } 752 }
439} 753}
440 754
441static void * 755static void *
442ev_realloc_emul (void *ptr, long size) 756ev_realloc_emul (void *ptr, long size)
443{ 757{
758#if __GLIBC__
759 return realloc (ptr, size);
760#else
444 /* some systems, notably openbsd and darwin, fail to properly 761 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 762 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 763 * the single unix specification, so work around them here.
447 */ 764 */
448 765
449 if (size) 766 if (size)
450 return realloc (ptr, size); 767 return realloc (ptr, size);
451 768
452 free (ptr); 769 free (ptr);
453 return 0; 770 return 0;
771#endif
454} 772}
455 773
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 774static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
457 775
458void 776void ecb_cold
459ev_set_allocator (void *(*cb)(void *ptr, long size)) 777ev_set_allocator (void *(*cb)(void *ptr, long size))
460{ 778{
461 alloc = cb; 779 alloc = cb;
462} 780}
463 781
… …
466{ 784{
467 ptr = alloc (ptr, size); 785 ptr = alloc (ptr, size);
468 786
469 if (!ptr && size) 787 if (!ptr && size)
470 { 788 {
789#if EV_AVOID_STDIO
790 ev_printerr ("(libev) memory allocation failed, aborting.\n");
791#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 792 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
793#endif
472 abort (); 794 abort ();
473 } 795 }
474 796
475 return ptr; 797 return ptr;
476} 798}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 800#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 801#define ev_free(ptr) ev_realloc ((ptr), 0)
480 802
481/*****************************************************************************/ 803/*****************************************************************************/
482 804
805/* set in reify when reification needed */
806#define EV_ANFD_REIFY 1
807
483/* file descriptor info structure */ 808/* file descriptor info structure */
484typedef struct 809typedef struct
485{ 810{
486 WL head; 811 WL head;
487 unsigned char events; /* the events watched for */ 812 unsigned char events; /* the events watched for */
488 unsigned char reify; /* flag set when this ANFD needs reification */ 813 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
489 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 814 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
490 unsigned char unused; 815 unsigned char unused;
491#if EV_USE_EPOLL 816#if EV_USE_EPOLL
492 unsigned int egen; /* generation counter to counter epoll bugs */ 817 unsigned int egen; /* generation counter to counter epoll bugs */
493#endif 818#endif
494#if EV_SELECT_IS_WINSOCKET 819#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
495 SOCKET handle; 820 SOCKET handle;
821#endif
822#if EV_USE_IOCP
823 OVERLAPPED or, ow;
496#endif 824#endif
497} ANFD; 825} ANFD;
498 826
499/* stores the pending event set for a given watcher */ 827/* stores the pending event set for a given watcher */
500typedef struct 828typedef struct
… …
555 883
556 static int ev_default_loop_ptr; 884 static int ev_default_loop_ptr;
557 885
558#endif 886#endif
559 887
888#if EV_FEATURE_API
889# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
890# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
891# define EV_INVOKE_PENDING invoke_cb (EV_A)
892#else
893# define EV_RELEASE_CB (void)0
894# define EV_ACQUIRE_CB (void)0
895# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
896#endif
897
898#define EVBREAK_RECURSE 0x80
899
560/*****************************************************************************/ 900/*****************************************************************************/
561 901
902#ifndef EV_HAVE_EV_TIME
562ev_tstamp 903ev_tstamp
563ev_time (void) 904ev_time (void)
564{ 905{
565#if EV_USE_REALTIME 906#if EV_USE_REALTIME
566 if (expect_true (have_realtime)) 907 if (expect_true (have_realtime))
… …
573 914
574 struct timeval tv; 915 struct timeval tv;
575 gettimeofday (&tv, 0); 916 gettimeofday (&tv, 0);
576 return tv.tv_sec + tv.tv_usec * 1e-6; 917 return tv.tv_sec + tv.tv_usec * 1e-6;
577} 918}
919#endif
578 920
579inline_size ev_tstamp 921inline_size ev_tstamp
580get_clock (void) 922get_clock (void)
581{ 923{
582#if EV_USE_MONOTONIC 924#if EV_USE_MONOTONIC
… …
605 if (delay > 0.) 947 if (delay > 0.)
606 { 948 {
607#if EV_USE_NANOSLEEP 949#if EV_USE_NANOSLEEP
608 struct timespec ts; 950 struct timespec ts;
609 951
610 ts.tv_sec = (time_t)delay; 952 EV_TS_SET (ts, delay);
611 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
612
613 nanosleep (&ts, 0); 953 nanosleep (&ts, 0);
614#elif defined(_WIN32) 954#elif defined(_WIN32)
615 Sleep ((unsigned long)(delay * 1e3)); 955 Sleep ((unsigned long)(delay * 1e3));
616#else 956#else
617 struct timeval tv; 957 struct timeval tv;
618 958
619 tv.tv_sec = (time_t)delay;
620 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
621
622 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 959 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
623 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 960 /* something not guaranteed by newer posix versions, but guaranteed */
624 /* by older ones */ 961 /* by older ones */
962 EV_TV_SET (tv, delay);
625 select (0, 0, 0, 0, &tv); 963 select (0, 0, 0, 0, &tv);
626#endif 964#endif
627 } 965 }
628} 966}
629 967
630/*****************************************************************************/ 968/*****************************************************************************/
631 969
632#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 970#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
633 971
634/* find a suitable new size for the given array, */ 972/* find a suitable new size for the given array, */
635/* hopefully by rounding to a ncie-to-malloc size */ 973/* hopefully by rounding to a nice-to-malloc size */
636inline_size int 974inline_size int
637array_nextsize (int elem, int cur, int cnt) 975array_nextsize (int elem, int cur, int cnt)
638{ 976{
639 int ncur = cur + 1; 977 int ncur = cur + 1;
640 978
… …
652 } 990 }
653 991
654 return ncur; 992 return ncur;
655} 993}
656 994
657static noinline void * 995static void * noinline ecb_cold
658array_realloc (int elem, void *base, int *cur, int cnt) 996array_realloc (int elem, void *base, int *cur, int cnt)
659{ 997{
660 *cur = array_nextsize (elem, *cur, cnt); 998 *cur = array_nextsize (elem, *cur, cnt);
661 return ev_realloc (base, elem * *cur); 999 return ev_realloc (base, elem * *cur);
662} 1000}
… …
665 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1003 memset ((void *)(base), 0, sizeof (*(base)) * (count))
666 1004
667#define array_needsize(type,base,cur,cnt,init) \ 1005#define array_needsize(type,base,cur,cnt,init) \
668 if (expect_false ((cnt) > (cur))) \ 1006 if (expect_false ((cnt) > (cur))) \
669 { \ 1007 { \
670 int ocur_ = (cur); \ 1008 int ecb_unused ocur_ = (cur); \
671 (base) = (type *)array_realloc \ 1009 (base) = (type *)array_realloc \
672 (sizeof (type), (base), &(cur), (cnt)); \ 1010 (sizeof (type), (base), &(cur), (cnt)); \
673 init ((base) + (ocur_), (cur) - ocur_); \ 1011 init ((base) + (ocur_), (cur) - ocur_); \
674 } 1012 }
675 1013
… …
736} 1074}
737 1075
738/*****************************************************************************/ 1076/*****************************************************************************/
739 1077
740inline_speed void 1078inline_speed void
741fd_event (EV_P_ int fd, int revents) 1079fd_event_nocheck (EV_P_ int fd, int revents)
742{ 1080{
743 ANFD *anfd = anfds + fd; 1081 ANFD *anfd = anfds + fd;
744 ev_io *w; 1082 ev_io *w;
745 1083
746 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1084 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
750 if (ev) 1088 if (ev)
751 ev_feed_event (EV_A_ (W)w, ev); 1089 ev_feed_event (EV_A_ (W)w, ev);
752 } 1090 }
753} 1091}
754 1092
1093/* do not submit kernel events for fds that have reify set */
1094/* because that means they changed while we were polling for new events */
1095inline_speed void
1096fd_event (EV_P_ int fd, int revents)
1097{
1098 ANFD *anfd = anfds + fd;
1099
1100 if (expect_true (!anfd->reify))
1101 fd_event_nocheck (EV_A_ fd, revents);
1102}
1103
755void 1104void
756ev_feed_fd_event (EV_P_ int fd, int revents) 1105ev_feed_fd_event (EV_P_ int fd, int revents)
757{ 1106{
758 if (fd >= 0 && fd < anfdmax) 1107 if (fd >= 0 && fd < anfdmax)
759 fd_event (EV_A_ fd, revents); 1108 fd_event_nocheck (EV_A_ fd, revents);
760} 1109}
761 1110
762/* make sure the external fd watch events are in-sync */ 1111/* make sure the external fd watch events are in-sync */
763/* with the kernel/libev internal state */ 1112/* with the kernel/libev internal state */
764inline_size void 1113inline_size void
765fd_reify (EV_P) 1114fd_reify (EV_P)
766{ 1115{
767 int i; 1116 int i;
768 1117
1118#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1119 for (i = 0; i < fdchangecnt; ++i)
1120 {
1121 int fd = fdchanges [i];
1122 ANFD *anfd = anfds + fd;
1123
1124 if (anfd->reify & EV__IOFDSET && anfd->head)
1125 {
1126 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1127
1128 if (handle != anfd->handle)
1129 {
1130 unsigned long arg;
1131
1132 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1133
1134 /* handle changed, but fd didn't - we need to do it in two steps */
1135 backend_modify (EV_A_ fd, anfd->events, 0);
1136 anfd->events = 0;
1137 anfd->handle = handle;
1138 }
1139 }
1140 }
1141#endif
1142
769 for (i = 0; i < fdchangecnt; ++i) 1143 for (i = 0; i < fdchangecnt; ++i)
770 { 1144 {
771 int fd = fdchanges [i]; 1145 int fd = fdchanges [i];
772 ANFD *anfd = anfds + fd; 1146 ANFD *anfd = anfds + fd;
773 ev_io *w; 1147 ev_io *w;
774 1148
775 unsigned char events = 0; 1149 unsigned char o_events = anfd->events;
1150 unsigned char o_reify = anfd->reify;
776 1151
777 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1152 anfd->reify = 0;
778 events |= (unsigned char)w->events;
779 1153
780#if EV_SELECT_IS_WINSOCKET 1154 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
781 if (events)
782 { 1155 {
783 unsigned long arg; 1156 anfd->events = 0;
784 #ifdef EV_FD_TO_WIN32_HANDLE 1157
785 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1158 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
786 #else 1159 anfd->events |= (unsigned char)w->events;
787 anfd->handle = _get_osfhandle (fd); 1160
788 #endif 1161 if (o_events != anfd->events)
789 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1162 o_reify = EV__IOFDSET; /* actually |= */
790 } 1163 }
791#endif
792 1164
793 { 1165 if (o_reify & EV__IOFDSET)
794 unsigned char o_events = anfd->events;
795 unsigned char o_reify = anfd->reify;
796
797 anfd->reify = 0;
798 anfd->events = events;
799
800 if (o_events != events || o_reify & EV__IOFDSET)
801 backend_modify (EV_A_ fd, o_events, events); 1166 backend_modify (EV_A_ fd, o_events, anfd->events);
802 }
803 } 1167 }
804 1168
805 fdchangecnt = 0; 1169 fdchangecnt = 0;
806} 1170}
807 1171
… …
819 fdchanges [fdchangecnt - 1] = fd; 1183 fdchanges [fdchangecnt - 1] = fd;
820 } 1184 }
821} 1185}
822 1186
823/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1187/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
824inline_speed void 1188inline_speed void ecb_cold
825fd_kill (EV_P_ int fd) 1189fd_kill (EV_P_ int fd)
826{ 1190{
827 ev_io *w; 1191 ev_io *w;
828 1192
829 while ((w = (ev_io *)anfds [fd].head)) 1193 while ((w = (ev_io *)anfds [fd].head))
… …
831 ev_io_stop (EV_A_ w); 1195 ev_io_stop (EV_A_ w);
832 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1196 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
833 } 1197 }
834} 1198}
835 1199
836/* check whether the given fd is atcually valid, for error recovery */ 1200/* check whether the given fd is actually valid, for error recovery */
837inline_size int 1201inline_size int ecb_cold
838fd_valid (int fd) 1202fd_valid (int fd)
839{ 1203{
840#ifdef _WIN32 1204#ifdef _WIN32
841 return _get_osfhandle (fd) != -1; 1205 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
842#else 1206#else
843 return fcntl (fd, F_GETFD) != -1; 1207 return fcntl (fd, F_GETFD) != -1;
844#endif 1208#endif
845} 1209}
846 1210
847/* called on EBADF to verify fds */ 1211/* called on EBADF to verify fds */
848static void noinline 1212static void noinline ecb_cold
849fd_ebadf (EV_P) 1213fd_ebadf (EV_P)
850{ 1214{
851 int fd; 1215 int fd;
852 1216
853 for (fd = 0; fd < anfdmax; ++fd) 1217 for (fd = 0; fd < anfdmax; ++fd)
… …
855 if (!fd_valid (fd) && errno == EBADF) 1219 if (!fd_valid (fd) && errno == EBADF)
856 fd_kill (EV_A_ fd); 1220 fd_kill (EV_A_ fd);
857} 1221}
858 1222
859/* called on ENOMEM in select/poll to kill some fds and retry */ 1223/* called on ENOMEM in select/poll to kill some fds and retry */
860static void noinline 1224static void noinline ecb_cold
861fd_enomem (EV_P) 1225fd_enomem (EV_P)
862{ 1226{
863 int fd; 1227 int fd;
864 1228
865 for (fd = anfdmax; fd--; ) 1229 for (fd = anfdmax; fd--; )
866 if (anfds [fd].events) 1230 if (anfds [fd].events)
867 { 1231 {
868 fd_kill (EV_A_ fd); 1232 fd_kill (EV_A_ fd);
869 return; 1233 break;
870 } 1234 }
871} 1235}
872 1236
873/* usually called after fork if backend needs to re-arm all fds from scratch */ 1237/* usually called after fork if backend needs to re-arm all fds from scratch */
874static void noinline 1238static void noinline
… …
879 for (fd = 0; fd < anfdmax; ++fd) 1243 for (fd = 0; fd < anfdmax; ++fd)
880 if (anfds [fd].events) 1244 if (anfds [fd].events)
881 { 1245 {
882 anfds [fd].events = 0; 1246 anfds [fd].events = 0;
883 anfds [fd].emask = 0; 1247 anfds [fd].emask = 0;
884 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1248 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
885 } 1249 }
886} 1250}
887 1251
1252/* used to prepare libev internal fd's */
1253/* this is not fork-safe */
1254inline_speed void
1255fd_intern (int fd)
1256{
1257#ifdef _WIN32
1258 unsigned long arg = 1;
1259 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1260#else
1261 fcntl (fd, F_SETFD, FD_CLOEXEC);
1262 fcntl (fd, F_SETFL, O_NONBLOCK);
1263#endif
1264}
1265
888/*****************************************************************************/ 1266/*****************************************************************************/
889 1267
890/* 1268/*
891 * the heap functions want a real array index. array index 0 uis guaranteed to not 1269 * the heap functions want a real array index. array index 0 is guaranteed to not
892 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1270 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
893 * the branching factor of the d-tree. 1271 * the branching factor of the d-tree.
894 */ 1272 */
895 1273
896/* 1274/*
… …
964 1342
965 for (;;) 1343 for (;;)
966 { 1344 {
967 int c = k << 1; 1345 int c = k << 1;
968 1346
969 if (c > N + HEAP0 - 1) 1347 if (c >= N + HEAP0)
970 break; 1348 break;
971 1349
972 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1350 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
973 ? 1 : 0; 1351 ? 1 : 0;
974 1352
… …
1010 1388
1011/* move an element suitably so it is in a correct place */ 1389/* move an element suitably so it is in a correct place */
1012inline_size void 1390inline_size void
1013adjustheap (ANHE *heap, int N, int k) 1391adjustheap (ANHE *heap, int N, int k)
1014{ 1392{
1015 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1393 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1016 upheap (heap, k); 1394 upheap (heap, k);
1017 else 1395 else
1018 downheap (heap, N, k); 1396 downheap (heap, N, k);
1019} 1397}
1020 1398
… …
1033/*****************************************************************************/ 1411/*****************************************************************************/
1034 1412
1035/* associate signal watchers to a signal signal */ 1413/* associate signal watchers to a signal signal */
1036typedef struct 1414typedef struct
1037{ 1415{
1416 EV_ATOMIC_T pending;
1417#if EV_MULTIPLICITY
1418 EV_P;
1419#endif
1038 WL head; 1420 WL head;
1039 EV_ATOMIC_T gotsig;
1040} ANSIG; 1421} ANSIG;
1041 1422
1042static ANSIG *signals; 1423static ANSIG signals [EV_NSIG - 1];
1043static int signalmax;
1044
1045static EV_ATOMIC_T gotsig;
1046 1424
1047/*****************************************************************************/ 1425/*****************************************************************************/
1048 1426
1049/* used to prepare libev internal fd's */ 1427#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1050/* this is not fork-safe */
1051inline_speed void
1052fd_intern (int fd)
1053{
1054#ifdef _WIN32
1055 unsigned long arg = 1;
1056 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1057#else
1058 fcntl (fd, F_SETFD, FD_CLOEXEC);
1059 fcntl (fd, F_SETFL, O_NONBLOCK);
1060#endif
1061}
1062 1428
1063static void noinline 1429static void noinline ecb_cold
1064evpipe_init (EV_P) 1430evpipe_init (EV_P)
1065{ 1431{
1066 if (!ev_is_active (&pipe_w)) 1432 if (!ev_is_active (&pipe_w))
1067 { 1433 {
1068#if EV_USE_EVENTFD 1434# if EV_USE_EVENTFD
1435 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1436 if (evfd < 0 && errno == EINVAL)
1069 if ((evfd = eventfd (0, 0)) >= 0) 1437 evfd = eventfd (0, 0);
1438
1439 if (evfd >= 0)
1070 { 1440 {
1071 evpipe [0] = -1; 1441 evpipe [0] = -1;
1072 fd_intern (evfd); 1442 fd_intern (evfd); /* doing it twice doesn't hurt */
1073 ev_io_set (&pipe_w, evfd, EV_READ); 1443 ev_io_set (&pipe_w, evfd, EV_READ);
1074 } 1444 }
1075 else 1445 else
1076#endif 1446# endif
1077 { 1447 {
1078 while (pipe (evpipe)) 1448 while (pipe (evpipe))
1079 ev_syserr ("(libev) error creating signal/async pipe"); 1449 ev_syserr ("(libev) error creating signal/async pipe");
1080 1450
1081 fd_intern (evpipe [0]); 1451 fd_intern (evpipe [0]);
… …
1086 ev_io_start (EV_A_ &pipe_w); 1456 ev_io_start (EV_A_ &pipe_w);
1087 ev_unref (EV_A); /* watcher should not keep loop alive */ 1457 ev_unref (EV_A); /* watcher should not keep loop alive */
1088 } 1458 }
1089} 1459}
1090 1460
1091inline_size void 1461inline_speed void
1092evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1462evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1093{ 1463{
1094 if (!*flag) 1464 if (expect_true (*flag))
1465 return;
1466
1467 *flag = 1;
1468
1469 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1470
1471 pipe_write_skipped = 1;
1472
1473 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1474
1475 if (pipe_write_wanted)
1095 { 1476 {
1477 int old_errno;
1478
1479 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1480
1096 int old_errno = errno; /* save errno because write might clobber it */ 1481 old_errno = errno; /* save errno because write will clobber it */
1097
1098 *flag = 1;
1099 1482
1100#if EV_USE_EVENTFD 1483#if EV_USE_EVENTFD
1101 if (evfd >= 0) 1484 if (evfd >= 0)
1102 { 1485 {
1103 uint64_t counter = 1; 1486 uint64_t counter = 1;
1104 write (evfd, &counter, sizeof (uint64_t)); 1487 write (evfd, &counter, sizeof (uint64_t));
1105 } 1488 }
1106 else 1489 else
1107#endif 1490#endif
1491 {
1492 /* win32 people keep sending patches that change this write() to send() */
1493 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1494 /* so when you think this write should be a send instead, please find out */
1495 /* where your send() is from - it's definitely not the microsoft send, and */
1496 /* tell me. thank you. */
1108 write (evpipe [1], &old_errno, 1); 1497 write (evpipe [1], &(evpipe [1]), 1);
1498 }
1109 1499
1110 errno = old_errno; 1500 errno = old_errno;
1111 } 1501 }
1112} 1502}
1113 1503
1114/* called whenever the libev signal pipe */ 1504/* called whenever the libev signal pipe */
1115/* got some events (signal, async) */ 1505/* got some events (signal, async) */
1116static void 1506static void
1117pipecb (EV_P_ ev_io *iow, int revents) 1507pipecb (EV_P_ ev_io *iow, int revents)
1118{ 1508{
1509 int i;
1510
1511 if (revents & EV_READ)
1512 {
1119#if EV_USE_EVENTFD 1513#if EV_USE_EVENTFD
1120 if (evfd >= 0) 1514 if (evfd >= 0)
1121 { 1515 {
1122 uint64_t counter; 1516 uint64_t counter;
1123 read (evfd, &counter, sizeof (uint64_t)); 1517 read (evfd, &counter, sizeof (uint64_t));
1124 } 1518 }
1125 else 1519 else
1126#endif 1520#endif
1127 { 1521 {
1128 char dummy; 1522 char dummy;
1523 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1129 read (evpipe [0], &dummy, 1); 1524 read (evpipe [0], &dummy, 1);
1525 }
1526 }
1527
1528 pipe_write_skipped = 0;
1529
1530#if EV_SIGNAL_ENABLE
1531 if (sig_pending)
1130 } 1532 {
1533 sig_pending = 0;
1131 1534
1132 if (gotsig && ev_is_default_loop (EV_A)) 1535 for (i = EV_NSIG - 1; i--; )
1133 { 1536 if (expect_false (signals [i].pending))
1134 int signum;
1135 gotsig = 0;
1136
1137 for (signum = signalmax; signum--; )
1138 if (signals [signum].gotsig)
1139 ev_feed_signal_event (EV_A_ signum + 1); 1537 ev_feed_signal_event (EV_A_ i + 1);
1140 } 1538 }
1539#endif
1141 1540
1142#if EV_ASYNC_ENABLE 1541#if EV_ASYNC_ENABLE
1143 if (gotasync) 1542 if (async_pending)
1144 { 1543 {
1145 int i; 1544 async_pending = 0;
1146 gotasync = 0;
1147 1545
1148 for (i = asynccnt; i--; ) 1546 for (i = asynccnt; i--; )
1149 if (asyncs [i]->sent) 1547 if (asyncs [i]->sent)
1150 { 1548 {
1151 asyncs [i]->sent = 0; 1549 asyncs [i]->sent = 0;
… …
1155#endif 1553#endif
1156} 1554}
1157 1555
1158/*****************************************************************************/ 1556/*****************************************************************************/
1159 1557
1558void
1559ev_feed_signal (int signum)
1560{
1561#if EV_MULTIPLICITY
1562 EV_P = signals [signum - 1].loop;
1563
1564 if (!EV_A)
1565 return;
1566#endif
1567
1568 if (!ev_active (&pipe_w))
1569 return;
1570
1571 signals [signum - 1].pending = 1;
1572 evpipe_write (EV_A_ &sig_pending);
1573}
1574
1160static void 1575static void
1161ev_sighandler (int signum) 1576ev_sighandler (int signum)
1162{ 1577{
1163#if EV_MULTIPLICITY
1164 struct ev_loop *loop = &default_loop_struct;
1165#endif
1166
1167#if _WIN32 1578#ifdef _WIN32
1168 signal (signum, ev_sighandler); 1579 signal (signum, ev_sighandler);
1169#endif 1580#endif
1170 1581
1171 signals [signum - 1].gotsig = 1; 1582 ev_feed_signal (signum);
1172 evpipe_write (EV_A_ &gotsig);
1173} 1583}
1174 1584
1175void noinline 1585void noinline
1176ev_feed_signal_event (EV_P_ int signum) 1586ev_feed_signal_event (EV_P_ int signum)
1177{ 1587{
1178 WL w; 1588 WL w;
1179 1589
1590 if (expect_false (signum <= 0 || signum > EV_NSIG))
1591 return;
1592
1593 --signum;
1594
1180#if EV_MULTIPLICITY 1595#if EV_MULTIPLICITY
1181 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1596 /* it is permissible to try to feed a signal to the wrong loop */
1182#endif 1597 /* or, likely more useful, feeding a signal nobody is waiting for */
1183 1598
1184 --signum; 1599 if (expect_false (signals [signum].loop != EV_A))
1185
1186 if (signum < 0 || signum >= signalmax)
1187 return; 1600 return;
1601#endif
1188 1602
1189 signals [signum].gotsig = 0; 1603 signals [signum].pending = 0;
1190 1604
1191 for (w = signals [signum].head; w; w = w->next) 1605 for (w = signals [signum].head; w; w = w->next)
1192 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1606 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1193} 1607}
1194 1608
1609#if EV_USE_SIGNALFD
1610static void
1611sigfdcb (EV_P_ ev_io *iow, int revents)
1612{
1613 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1614
1615 for (;;)
1616 {
1617 ssize_t res = read (sigfd, si, sizeof (si));
1618
1619 /* not ISO-C, as res might be -1, but works with SuS */
1620 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1621 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1622
1623 if (res < (ssize_t)sizeof (si))
1624 break;
1625 }
1626}
1627#endif
1628
1629#endif
1630
1195/*****************************************************************************/ 1631/*****************************************************************************/
1196 1632
1633#if EV_CHILD_ENABLE
1197static WL childs [EV_PID_HASHSIZE]; 1634static WL childs [EV_PID_HASHSIZE];
1198
1199#ifndef _WIN32
1200 1635
1201static ev_signal childev; 1636static ev_signal childev;
1202 1637
1203#ifndef WIFCONTINUED 1638#ifndef WIFCONTINUED
1204# define WIFCONTINUED(status) 0 1639# define WIFCONTINUED(status) 0
… …
1209child_reap (EV_P_ int chain, int pid, int status) 1644child_reap (EV_P_ int chain, int pid, int status)
1210{ 1645{
1211 ev_child *w; 1646 ev_child *w;
1212 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1647 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1213 1648
1214 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1649 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1215 { 1650 {
1216 if ((w->pid == pid || !w->pid) 1651 if ((w->pid == pid || !w->pid)
1217 && (!traced || (w->flags & 1))) 1652 && (!traced || (w->flags & 1)))
1218 { 1653 {
1219 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1654 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1244 /* make sure we are called again until all children have been reaped */ 1679 /* make sure we are called again until all children have been reaped */
1245 /* we need to do it this way so that the callback gets called before we continue */ 1680 /* we need to do it this way so that the callback gets called before we continue */
1246 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1681 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1247 1682
1248 child_reap (EV_A_ pid, pid, status); 1683 child_reap (EV_A_ pid, pid, status);
1249 if (EV_PID_HASHSIZE > 1) 1684 if ((EV_PID_HASHSIZE) > 1)
1250 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1685 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1251} 1686}
1252 1687
1253#endif 1688#endif
1254 1689
1255/*****************************************************************************/ 1690/*****************************************************************************/
1256 1691
1692#if EV_USE_IOCP
1693# include "ev_iocp.c"
1694#endif
1257#if EV_USE_PORT 1695#if EV_USE_PORT
1258# include "ev_port.c" 1696# include "ev_port.c"
1259#endif 1697#endif
1260#if EV_USE_KQUEUE 1698#if EV_USE_KQUEUE
1261# include "ev_kqueue.c" 1699# include "ev_kqueue.c"
… …
1268#endif 1706#endif
1269#if EV_USE_SELECT 1707#if EV_USE_SELECT
1270# include "ev_select.c" 1708# include "ev_select.c"
1271#endif 1709#endif
1272 1710
1273int 1711int ecb_cold
1274ev_version_major (void) 1712ev_version_major (void)
1275{ 1713{
1276 return EV_VERSION_MAJOR; 1714 return EV_VERSION_MAJOR;
1277} 1715}
1278 1716
1279int 1717int ecb_cold
1280ev_version_minor (void) 1718ev_version_minor (void)
1281{ 1719{
1282 return EV_VERSION_MINOR; 1720 return EV_VERSION_MINOR;
1283} 1721}
1284 1722
1285/* return true if we are running with elevated privileges and should ignore env variables */ 1723/* return true if we are running with elevated privileges and should ignore env variables */
1286int inline_size 1724int inline_size ecb_cold
1287enable_secure (void) 1725enable_secure (void)
1288{ 1726{
1289#ifdef _WIN32 1727#ifdef _WIN32
1290 return 0; 1728 return 0;
1291#else 1729#else
1292 return getuid () != geteuid () 1730 return getuid () != geteuid ()
1293 || getgid () != getegid (); 1731 || getgid () != getegid ();
1294#endif 1732#endif
1295} 1733}
1296 1734
1297unsigned int 1735unsigned int ecb_cold
1298ev_supported_backends (void) 1736ev_supported_backends (void)
1299{ 1737{
1300 unsigned int flags = 0; 1738 unsigned int flags = 0;
1301 1739
1302 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1740 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1306 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1744 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1307 1745
1308 return flags; 1746 return flags;
1309} 1747}
1310 1748
1311unsigned int 1749unsigned int ecb_cold
1312ev_recommended_backends (void) 1750ev_recommended_backends (void)
1313{ 1751{
1314 unsigned int flags = ev_supported_backends (); 1752 unsigned int flags = ev_supported_backends ();
1315 1753
1316#ifndef __NetBSD__ 1754#ifndef __NetBSD__
… …
1321#ifdef __APPLE__ 1759#ifdef __APPLE__
1322 /* only select works correctly on that "unix-certified" platform */ 1760 /* only select works correctly on that "unix-certified" platform */
1323 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1761 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1324 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1762 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1325#endif 1763#endif
1764#ifdef __FreeBSD__
1765 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1766#endif
1326 1767
1327 return flags; 1768 return flags;
1328} 1769}
1329 1770
1330unsigned int 1771unsigned int ecb_cold
1331ev_embeddable_backends (void) 1772ev_embeddable_backends (void)
1332{ 1773{
1333 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1774 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1334 1775
1335 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1776 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1336 /* please fix it and tell me how to detect the fix */ 1777 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1337 flags &= ~EVBACKEND_EPOLL; 1778 flags &= ~EVBACKEND_EPOLL;
1338 1779
1339 return flags; 1780 return flags;
1340} 1781}
1341 1782
1342unsigned int 1783unsigned int
1343ev_backend (EV_P) 1784ev_backend (EV_P)
1344{ 1785{
1345 return backend; 1786 return backend;
1346} 1787}
1347 1788
1789#if EV_FEATURE_API
1348unsigned int 1790unsigned int
1349ev_loop_count (EV_P) 1791ev_iteration (EV_P)
1350{ 1792{
1351 return loop_count; 1793 return loop_count;
1794}
1795
1796unsigned int
1797ev_depth (EV_P)
1798{
1799 return loop_depth;
1352} 1800}
1353 1801
1354void 1802void
1355ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1803ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1356{ 1804{
… …
1361ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1809ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1362{ 1810{
1363 timeout_blocktime = interval; 1811 timeout_blocktime = interval;
1364} 1812}
1365 1813
1814void
1815ev_set_userdata (EV_P_ void *data)
1816{
1817 userdata = data;
1818}
1819
1820void *
1821ev_userdata (EV_P)
1822{
1823 return userdata;
1824}
1825
1826void
1827ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1828{
1829 invoke_cb = invoke_pending_cb;
1830}
1831
1832void
1833ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1834{
1835 release_cb = release;
1836 acquire_cb = acquire;
1837}
1838#endif
1839
1366/* initialise a loop structure, must be zero-initialised */ 1840/* initialise a loop structure, must be zero-initialised */
1367static void noinline 1841static void noinline ecb_cold
1368loop_init (EV_P_ unsigned int flags) 1842loop_init (EV_P_ unsigned int flags)
1369{ 1843{
1370 if (!backend) 1844 if (!backend)
1371 { 1845 {
1846 origflags = flags;
1847
1372#if EV_USE_REALTIME 1848#if EV_USE_REALTIME
1373 if (!have_realtime) 1849 if (!have_realtime)
1374 { 1850 {
1375 struct timespec ts; 1851 struct timespec ts;
1376 1852
… …
1387 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1863 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1388 have_monotonic = 1; 1864 have_monotonic = 1;
1389 } 1865 }
1390#endif 1866#endif
1391 1867
1392 ev_rt_now = ev_time ();
1393 mn_now = get_clock ();
1394 now_floor = mn_now;
1395 rtmn_diff = ev_rt_now - mn_now;
1396
1397 io_blocktime = 0.;
1398 timeout_blocktime = 0.;
1399 backend = 0;
1400 backend_fd = -1;
1401 gotasync = 0;
1402#if EV_USE_INOTIFY
1403 fs_fd = -2;
1404#endif
1405
1406 /* pid check not overridable via env */ 1868 /* pid check not overridable via env */
1407#ifndef _WIN32 1869#ifndef _WIN32
1408 if (flags & EVFLAG_FORKCHECK) 1870 if (flags & EVFLAG_FORKCHECK)
1409 curpid = getpid (); 1871 curpid = getpid ();
1410#endif 1872#endif
… …
1412 if (!(flags & EVFLAG_NOENV) 1874 if (!(flags & EVFLAG_NOENV)
1413 && !enable_secure () 1875 && !enable_secure ()
1414 && getenv ("LIBEV_FLAGS")) 1876 && getenv ("LIBEV_FLAGS"))
1415 flags = atoi (getenv ("LIBEV_FLAGS")); 1877 flags = atoi (getenv ("LIBEV_FLAGS"));
1416 1878
1417 if (!(flags & 0x0000ffffU)) 1879 ev_rt_now = ev_time ();
1880 mn_now = get_clock ();
1881 now_floor = mn_now;
1882 rtmn_diff = ev_rt_now - mn_now;
1883#if EV_FEATURE_API
1884 invoke_cb = ev_invoke_pending;
1885#endif
1886
1887 io_blocktime = 0.;
1888 timeout_blocktime = 0.;
1889 backend = 0;
1890 backend_fd = -1;
1891 sig_pending = 0;
1892#if EV_ASYNC_ENABLE
1893 async_pending = 0;
1894#endif
1895 pipe_write_skipped = 0;
1896 pipe_write_wanted = 0;
1897#if EV_USE_INOTIFY
1898 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1899#endif
1900#if EV_USE_SIGNALFD
1901 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1902#endif
1903
1904 if (!(flags & EVBACKEND_MASK))
1418 flags |= ev_recommended_backends (); 1905 flags |= ev_recommended_backends ();
1419 1906
1907#if EV_USE_IOCP
1908 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1909#endif
1420#if EV_USE_PORT 1910#if EV_USE_PORT
1421 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1911 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1422#endif 1912#endif
1423#if EV_USE_KQUEUE 1913#if EV_USE_KQUEUE
1424 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1914 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1433 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1923 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1434#endif 1924#endif
1435 1925
1436 ev_prepare_init (&pending_w, pendingcb); 1926 ev_prepare_init (&pending_w, pendingcb);
1437 1927
1928#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1438 ev_init (&pipe_w, pipecb); 1929 ev_init (&pipe_w, pipecb);
1439 ev_set_priority (&pipe_w, EV_MAXPRI); 1930 ev_set_priority (&pipe_w, EV_MAXPRI);
1931#endif
1440 } 1932 }
1441} 1933}
1442 1934
1443/* free up a loop structure */ 1935/* free up a loop structure */
1444static void noinline 1936void ecb_cold
1445loop_destroy (EV_P) 1937ev_loop_destroy (EV_P)
1446{ 1938{
1447 int i; 1939 int i;
1448 1940
1941#if EV_MULTIPLICITY
1942 /* mimic free (0) */
1943 if (!EV_A)
1944 return;
1945#endif
1946
1947#if EV_CLEANUP_ENABLE
1948 /* queue cleanup watchers (and execute them) */
1949 if (expect_false (cleanupcnt))
1950 {
1951 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1952 EV_INVOKE_PENDING;
1953 }
1954#endif
1955
1956#if EV_CHILD_ENABLE
1957 if (ev_is_active (&childev))
1958 {
1959 ev_ref (EV_A); /* child watcher */
1960 ev_signal_stop (EV_A_ &childev);
1961 }
1962#endif
1963
1449 if (ev_is_active (&pipe_w)) 1964 if (ev_is_active (&pipe_w))
1450 { 1965 {
1451 ev_ref (EV_A); /* signal watcher */ 1966 /*ev_ref (EV_A);*/
1452 ev_io_stop (EV_A_ &pipe_w); 1967 /*ev_io_stop (EV_A_ &pipe_w);*/
1453 1968
1454#if EV_USE_EVENTFD 1969#if EV_USE_EVENTFD
1455 if (evfd >= 0) 1970 if (evfd >= 0)
1456 close (evfd); 1971 close (evfd);
1457#endif 1972#endif
1458 1973
1459 if (evpipe [0] >= 0) 1974 if (evpipe [0] >= 0)
1460 { 1975 {
1461 close (evpipe [0]); 1976 EV_WIN32_CLOSE_FD (evpipe [0]);
1462 close (evpipe [1]); 1977 EV_WIN32_CLOSE_FD (evpipe [1]);
1463 } 1978 }
1464 } 1979 }
1980
1981#if EV_USE_SIGNALFD
1982 if (ev_is_active (&sigfd_w))
1983 close (sigfd);
1984#endif
1465 1985
1466#if EV_USE_INOTIFY 1986#if EV_USE_INOTIFY
1467 if (fs_fd >= 0) 1987 if (fs_fd >= 0)
1468 close (fs_fd); 1988 close (fs_fd);
1469#endif 1989#endif
1470 1990
1471 if (backend_fd >= 0) 1991 if (backend_fd >= 0)
1472 close (backend_fd); 1992 close (backend_fd);
1473 1993
1994#if EV_USE_IOCP
1995 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1996#endif
1474#if EV_USE_PORT 1997#if EV_USE_PORT
1475 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1998 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1476#endif 1999#endif
1477#if EV_USE_KQUEUE 2000#if EV_USE_KQUEUE
1478 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2001 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1493#if EV_IDLE_ENABLE 2016#if EV_IDLE_ENABLE
1494 array_free (idle, [i]); 2017 array_free (idle, [i]);
1495#endif 2018#endif
1496 } 2019 }
1497 2020
1498 ev_free (anfds); anfdmax = 0; 2021 ev_free (anfds); anfds = 0; anfdmax = 0;
1499 2022
1500 /* have to use the microsoft-never-gets-it-right macro */ 2023 /* have to use the microsoft-never-gets-it-right macro */
1501 array_free (rfeed, EMPTY); 2024 array_free (rfeed, EMPTY);
1502 array_free (fdchange, EMPTY); 2025 array_free (fdchange, EMPTY);
1503 array_free (timer, EMPTY); 2026 array_free (timer, EMPTY);
… …
1505 array_free (periodic, EMPTY); 2028 array_free (periodic, EMPTY);
1506#endif 2029#endif
1507#if EV_FORK_ENABLE 2030#if EV_FORK_ENABLE
1508 array_free (fork, EMPTY); 2031 array_free (fork, EMPTY);
1509#endif 2032#endif
2033#if EV_CLEANUP_ENABLE
2034 array_free (cleanup, EMPTY);
2035#endif
1510 array_free (prepare, EMPTY); 2036 array_free (prepare, EMPTY);
1511 array_free (check, EMPTY); 2037 array_free (check, EMPTY);
1512#if EV_ASYNC_ENABLE 2038#if EV_ASYNC_ENABLE
1513 array_free (async, EMPTY); 2039 array_free (async, EMPTY);
1514#endif 2040#endif
1515 2041
1516 backend = 0; 2042 backend = 0;
2043
2044#if EV_MULTIPLICITY
2045 if (ev_is_default_loop (EV_A))
2046#endif
2047 ev_default_loop_ptr = 0;
2048#if EV_MULTIPLICITY
2049 else
2050 ev_free (EV_A);
2051#endif
1517} 2052}
1518 2053
1519#if EV_USE_INOTIFY 2054#if EV_USE_INOTIFY
1520inline_size void infy_fork (EV_P); 2055inline_size void infy_fork (EV_P);
1521#endif 2056#endif
… …
1536 infy_fork (EV_A); 2071 infy_fork (EV_A);
1537#endif 2072#endif
1538 2073
1539 if (ev_is_active (&pipe_w)) 2074 if (ev_is_active (&pipe_w))
1540 { 2075 {
1541 /* this "locks" the handlers against writing to the pipe */ 2076 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1542 /* while we modify the fd vars */
1543 gotsig = 1;
1544#if EV_ASYNC_ENABLE
1545 gotasync = 1;
1546#endif
1547 2077
1548 ev_ref (EV_A); 2078 ev_ref (EV_A);
1549 ev_io_stop (EV_A_ &pipe_w); 2079 ev_io_stop (EV_A_ &pipe_w);
1550 2080
1551#if EV_USE_EVENTFD 2081#if EV_USE_EVENTFD
… …
1553 close (evfd); 2083 close (evfd);
1554#endif 2084#endif
1555 2085
1556 if (evpipe [0] >= 0) 2086 if (evpipe [0] >= 0)
1557 { 2087 {
1558 close (evpipe [0]); 2088 EV_WIN32_CLOSE_FD (evpipe [0]);
1559 close (evpipe [1]); 2089 EV_WIN32_CLOSE_FD (evpipe [1]);
1560 } 2090 }
1561 2091
2092#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1562 evpipe_init (EV_A); 2093 evpipe_init (EV_A);
1563 /* now iterate over everything, in case we missed something */ 2094 /* now iterate over everything, in case we missed something */
1564 pipecb (EV_A_ &pipe_w, EV_READ); 2095 pipecb (EV_A_ &pipe_w, EV_READ);
2096#endif
1565 } 2097 }
1566 2098
1567 postfork = 0; 2099 postfork = 0;
1568} 2100}
1569 2101
1570#if EV_MULTIPLICITY 2102#if EV_MULTIPLICITY
1571 2103
1572struct ev_loop * 2104struct ev_loop * ecb_cold
1573ev_loop_new (unsigned int flags) 2105ev_loop_new (unsigned int flags)
1574{ 2106{
1575 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2107 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1576 2108
1577 memset (loop, 0, sizeof (struct ev_loop)); 2109 memset (EV_A, 0, sizeof (struct ev_loop));
1578
1579 loop_init (EV_A_ flags); 2110 loop_init (EV_A_ flags);
1580 2111
1581 if (ev_backend (EV_A)) 2112 if (ev_backend (EV_A))
1582 return loop; 2113 return EV_A;
1583 2114
2115 ev_free (EV_A);
1584 return 0; 2116 return 0;
1585} 2117}
1586 2118
1587void 2119#endif /* multiplicity */
1588ev_loop_destroy (EV_P)
1589{
1590 loop_destroy (EV_A);
1591 ev_free (loop);
1592}
1593
1594void
1595ev_loop_fork (EV_P)
1596{
1597 postfork = 1; /* must be in line with ev_default_fork */
1598}
1599 2120
1600#if EV_VERIFY 2121#if EV_VERIFY
1601static void noinline 2122static void noinline ecb_cold
1602verify_watcher (EV_P_ W w) 2123verify_watcher (EV_P_ W w)
1603{ 2124{
1604 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2125 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1605 2126
1606 if (w->pending) 2127 if (w->pending)
1607 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2128 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1608} 2129}
1609 2130
1610static void noinline 2131static void noinline ecb_cold
1611verify_heap (EV_P_ ANHE *heap, int N) 2132verify_heap (EV_P_ ANHE *heap, int N)
1612{ 2133{
1613 int i; 2134 int i;
1614 2135
1615 for (i = HEAP0; i < N + HEAP0; ++i) 2136 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1620 2141
1621 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2142 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1622 } 2143 }
1623} 2144}
1624 2145
1625static void noinline 2146static void noinline ecb_cold
1626array_verify (EV_P_ W *ws, int cnt) 2147array_verify (EV_P_ W *ws, int cnt)
1627{ 2148{
1628 while (cnt--) 2149 while (cnt--)
1629 { 2150 {
1630 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2151 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1631 verify_watcher (EV_A_ ws [cnt]); 2152 verify_watcher (EV_A_ ws [cnt]);
1632 } 2153 }
1633} 2154}
1634#endif 2155#endif
1635 2156
1636void 2157#if EV_FEATURE_API
2158void ecb_cold
1637ev_loop_verify (EV_P) 2159ev_verify (EV_P)
1638{ 2160{
1639#if EV_VERIFY 2161#if EV_VERIFY
1640 int i; 2162 int i;
1641 WL w; 2163 WL w;
1642 2164
… …
1676#if EV_FORK_ENABLE 2198#if EV_FORK_ENABLE
1677 assert (forkmax >= forkcnt); 2199 assert (forkmax >= forkcnt);
1678 array_verify (EV_A_ (W *)forks, forkcnt); 2200 array_verify (EV_A_ (W *)forks, forkcnt);
1679#endif 2201#endif
1680 2202
2203#if EV_CLEANUP_ENABLE
2204 assert (cleanupmax >= cleanupcnt);
2205 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2206#endif
2207
1681#if EV_ASYNC_ENABLE 2208#if EV_ASYNC_ENABLE
1682 assert (asyncmax >= asynccnt); 2209 assert (asyncmax >= asynccnt);
1683 array_verify (EV_A_ (W *)asyncs, asynccnt); 2210 array_verify (EV_A_ (W *)asyncs, asynccnt);
1684#endif 2211#endif
1685 2212
2213#if EV_PREPARE_ENABLE
1686 assert (preparemax >= preparecnt); 2214 assert (preparemax >= preparecnt);
1687 array_verify (EV_A_ (W *)prepares, preparecnt); 2215 array_verify (EV_A_ (W *)prepares, preparecnt);
2216#endif
1688 2217
2218#if EV_CHECK_ENABLE
1689 assert (checkmax >= checkcnt); 2219 assert (checkmax >= checkcnt);
1690 array_verify (EV_A_ (W *)checks, checkcnt); 2220 array_verify (EV_A_ (W *)checks, checkcnt);
2221#endif
1691 2222
1692# if 0 2223# if 0
2224#if EV_CHILD_ENABLE
1693 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2225 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1694 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2226 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2227#endif
1695# endif 2228# endif
1696#endif 2229#endif
1697} 2230}
1698 2231#endif
1699#endif /* multiplicity */
1700 2232
1701#if EV_MULTIPLICITY 2233#if EV_MULTIPLICITY
1702struct ev_loop * 2234struct ev_loop * ecb_cold
1703ev_default_loop_init (unsigned int flags)
1704#else 2235#else
1705int 2236int
2237#endif
1706ev_default_loop (unsigned int flags) 2238ev_default_loop (unsigned int flags)
1707#endif
1708{ 2239{
1709 if (!ev_default_loop_ptr) 2240 if (!ev_default_loop_ptr)
1710 { 2241 {
1711#if EV_MULTIPLICITY 2242#if EV_MULTIPLICITY
1712 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2243 EV_P = ev_default_loop_ptr = &default_loop_struct;
1713#else 2244#else
1714 ev_default_loop_ptr = 1; 2245 ev_default_loop_ptr = 1;
1715#endif 2246#endif
1716 2247
1717 loop_init (EV_A_ flags); 2248 loop_init (EV_A_ flags);
1718 2249
1719 if (ev_backend (EV_A)) 2250 if (ev_backend (EV_A))
1720 { 2251 {
1721#ifndef _WIN32 2252#if EV_CHILD_ENABLE
1722 ev_signal_init (&childev, childcb, SIGCHLD); 2253 ev_signal_init (&childev, childcb, SIGCHLD);
1723 ev_set_priority (&childev, EV_MAXPRI); 2254 ev_set_priority (&childev, EV_MAXPRI);
1724 ev_signal_start (EV_A_ &childev); 2255 ev_signal_start (EV_A_ &childev);
1725 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2256 ev_unref (EV_A); /* child watcher should not keep loop alive */
1726#endif 2257#endif
… …
1731 2262
1732 return ev_default_loop_ptr; 2263 return ev_default_loop_ptr;
1733} 2264}
1734 2265
1735void 2266void
1736ev_default_destroy (void) 2267ev_loop_fork (EV_P)
1737{ 2268{
1738#if EV_MULTIPLICITY
1739 struct ev_loop *loop = ev_default_loop_ptr;
1740#endif
1741
1742 ev_default_loop_ptr = 0;
1743
1744#ifndef _WIN32
1745 ev_ref (EV_A); /* child watcher */
1746 ev_signal_stop (EV_A_ &childev);
1747#endif
1748
1749 loop_destroy (EV_A);
1750}
1751
1752void
1753ev_default_fork (void)
1754{
1755#if EV_MULTIPLICITY
1756 struct ev_loop *loop = ev_default_loop_ptr;
1757#endif
1758
1759 postfork = 1; /* must be in line with ev_loop_fork */ 2269 postfork = 1; /* must be in line with ev_default_fork */
1760} 2270}
1761 2271
1762/*****************************************************************************/ 2272/*****************************************************************************/
1763 2273
1764void 2274void
1765ev_invoke (EV_P_ void *w, int revents) 2275ev_invoke (EV_P_ void *w, int revents)
1766{ 2276{
1767 EV_CB_INVOKE ((W)w, revents); 2277 EV_CB_INVOKE ((W)w, revents);
1768} 2278}
1769 2279
1770inline_speed void 2280unsigned int
1771call_pending (EV_P) 2281ev_pending_count (EV_P)
2282{
2283 int pri;
2284 unsigned int count = 0;
2285
2286 for (pri = NUMPRI; pri--; )
2287 count += pendingcnt [pri];
2288
2289 return count;
2290}
2291
2292void noinline
2293ev_invoke_pending (EV_P)
1772{ 2294{
1773 int pri; 2295 int pri;
1774 2296
1775 for (pri = NUMPRI; pri--; ) 2297 for (pri = NUMPRI; pri--; )
1776 while (pendingcnt [pri]) 2298 while (pendingcnt [pri])
1777 { 2299 {
1778 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2300 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1779
1780 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1781 /* ^ this is no longer true, as pending_w could be here */
1782 2301
1783 p->w->pending = 0; 2302 p->w->pending = 0;
1784 EV_CB_INVOKE (p->w, p->events); 2303 EV_CB_INVOKE (p->w, p->events);
1785 EV_FREQUENT_CHECK; 2304 EV_FREQUENT_CHECK;
1786 } 2305 }
… …
1843 EV_FREQUENT_CHECK; 2362 EV_FREQUENT_CHECK;
1844 feed_reverse (EV_A_ (W)w); 2363 feed_reverse (EV_A_ (W)w);
1845 } 2364 }
1846 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2365 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1847 2366
1848 feed_reverse_done (EV_A_ EV_TIMEOUT); 2367 feed_reverse_done (EV_A_ EV_TIMER);
1849 } 2368 }
1850} 2369}
1851 2370
1852#if EV_PERIODIC_ENABLE 2371#if EV_PERIODIC_ENABLE
2372
2373static void noinline
2374periodic_recalc (EV_P_ ev_periodic *w)
2375{
2376 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2377 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2378
2379 /* the above almost always errs on the low side */
2380 while (at <= ev_rt_now)
2381 {
2382 ev_tstamp nat = at + w->interval;
2383
2384 /* when resolution fails us, we use ev_rt_now */
2385 if (expect_false (nat == at))
2386 {
2387 at = ev_rt_now;
2388 break;
2389 }
2390
2391 at = nat;
2392 }
2393
2394 ev_at (w) = at;
2395}
2396
1853/* make periodics pending */ 2397/* make periodics pending */
1854inline_size void 2398inline_size void
1855periodics_reify (EV_P) 2399periodics_reify (EV_P)
1856{ 2400{
1857 EV_FREQUENT_CHECK; 2401 EV_FREQUENT_CHECK;
… …
1876 ANHE_at_cache (periodics [HEAP0]); 2420 ANHE_at_cache (periodics [HEAP0]);
1877 downheap (periodics, periodiccnt, HEAP0); 2421 downheap (periodics, periodiccnt, HEAP0);
1878 } 2422 }
1879 else if (w->interval) 2423 else if (w->interval)
1880 { 2424 {
1881 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2425 periodic_recalc (EV_A_ w);
1882 /* if next trigger time is not sufficiently in the future, put it there */
1883 /* this might happen because of floating point inexactness */
1884 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1885 {
1886 ev_at (w) += w->interval;
1887
1888 /* if interval is unreasonably low we might still have a time in the past */
1889 /* so correct this. this will make the periodic very inexact, but the user */
1890 /* has effectively asked to get triggered more often than possible */
1891 if (ev_at (w) < ev_rt_now)
1892 ev_at (w) = ev_rt_now;
1893 }
1894
1895 ANHE_at_cache (periodics [HEAP0]); 2426 ANHE_at_cache (periodics [HEAP0]);
1896 downheap (periodics, periodiccnt, HEAP0); 2427 downheap (periodics, periodiccnt, HEAP0);
1897 } 2428 }
1898 else 2429 else
1899 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2430 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1906 feed_reverse_done (EV_A_ EV_PERIODIC); 2437 feed_reverse_done (EV_A_ EV_PERIODIC);
1907 } 2438 }
1908} 2439}
1909 2440
1910/* simply recalculate all periodics */ 2441/* simply recalculate all periodics */
1911/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2442/* TODO: maybe ensure that at least one event happens when jumping forward? */
1912static void noinline 2443static void noinline ecb_cold
1913periodics_reschedule (EV_P) 2444periodics_reschedule (EV_P)
1914{ 2445{
1915 int i; 2446 int i;
1916 2447
1917 /* adjust periodics after time jump */ 2448 /* adjust periodics after time jump */
… …
1920 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2451 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1921 2452
1922 if (w->reschedule_cb) 2453 if (w->reschedule_cb)
1923 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2454 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1924 else if (w->interval) 2455 else if (w->interval)
1925 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2456 periodic_recalc (EV_A_ w);
1926 2457
1927 ANHE_at_cache (periodics [i]); 2458 ANHE_at_cache (periodics [i]);
1928 } 2459 }
1929 2460
1930 reheap (periodics, periodiccnt); 2461 reheap (periodics, periodiccnt);
1931} 2462}
1932#endif 2463#endif
1933 2464
1934/* adjust all timers by a given offset */ 2465/* adjust all timers by a given offset */
1935static void noinline 2466static void noinline ecb_cold
1936timers_reschedule (EV_P_ ev_tstamp adjust) 2467timers_reschedule (EV_P_ ev_tstamp adjust)
1937{ 2468{
1938 int i; 2469 int i;
1939 2470
1940 for (i = 0; i < timercnt; ++i) 2471 for (i = 0; i < timercnt; ++i)
… …
1944 ANHE_at_cache (*he); 2475 ANHE_at_cache (*he);
1945 } 2476 }
1946} 2477}
1947 2478
1948/* fetch new monotonic and realtime times from the kernel */ 2479/* fetch new monotonic and realtime times from the kernel */
1949/* also detetc if there was a timejump, and act accordingly */ 2480/* also detect if there was a timejump, and act accordingly */
1950inline_speed void 2481inline_speed void
1951time_update (EV_P_ ev_tstamp max_block) 2482time_update (EV_P_ ev_tstamp max_block)
1952{ 2483{
1953#if EV_USE_MONOTONIC 2484#if EV_USE_MONOTONIC
1954 if (expect_true (have_monotonic)) 2485 if (expect_true (have_monotonic))
… …
1977 * doesn't hurt either as we only do this on time-jumps or 2508 * doesn't hurt either as we only do this on time-jumps or
1978 * in the unlikely event of having been preempted here. 2509 * in the unlikely event of having been preempted here.
1979 */ 2510 */
1980 for (i = 4; --i; ) 2511 for (i = 4; --i; )
1981 { 2512 {
2513 ev_tstamp diff;
1982 rtmn_diff = ev_rt_now - mn_now; 2514 rtmn_diff = ev_rt_now - mn_now;
1983 2515
2516 diff = odiff - rtmn_diff;
2517
1984 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2518 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1985 return; /* all is well */ 2519 return; /* all is well */
1986 2520
1987 ev_rt_now = ev_time (); 2521 ev_rt_now = ev_time ();
1988 mn_now = get_clock (); 2522 mn_now = get_clock ();
1989 now_floor = mn_now; 2523 now_floor = mn_now;
… …
2011 2545
2012 mn_now = ev_rt_now; 2546 mn_now = ev_rt_now;
2013 } 2547 }
2014} 2548}
2015 2549
2016static int loop_done;
2017
2018void 2550void
2019ev_loop (EV_P_ int flags) 2551ev_run (EV_P_ int flags)
2020{ 2552{
2553#if EV_FEATURE_API
2554 ++loop_depth;
2555#endif
2556
2557 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2558
2021 loop_done = EVUNLOOP_CANCEL; 2559 loop_done = EVBREAK_CANCEL;
2022 2560
2023 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2561 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2024 2562
2025 do 2563 do
2026 { 2564 {
2027#if EV_VERIFY >= 2 2565#if EV_VERIFY >= 2
2028 ev_loop_verify (EV_A); 2566 ev_verify (EV_A);
2029#endif 2567#endif
2030 2568
2031#ifndef _WIN32 2569#ifndef _WIN32
2032 if (expect_false (curpid)) /* penalise the forking check even more */ 2570 if (expect_false (curpid)) /* penalise the forking check even more */
2033 if (expect_false (getpid () != curpid)) 2571 if (expect_false (getpid () != curpid))
… …
2041 /* we might have forked, so queue fork handlers */ 2579 /* we might have forked, so queue fork handlers */
2042 if (expect_false (postfork)) 2580 if (expect_false (postfork))
2043 if (forkcnt) 2581 if (forkcnt)
2044 { 2582 {
2045 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2583 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2046 call_pending (EV_A); 2584 EV_INVOKE_PENDING;
2047 } 2585 }
2048#endif 2586#endif
2049 2587
2588#if EV_PREPARE_ENABLE
2050 /* queue prepare watchers (and execute them) */ 2589 /* queue prepare watchers (and execute them) */
2051 if (expect_false (preparecnt)) 2590 if (expect_false (preparecnt))
2052 { 2591 {
2053 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2592 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2054 call_pending (EV_A); 2593 EV_INVOKE_PENDING;
2055 } 2594 }
2595#endif
2596
2597 if (expect_false (loop_done))
2598 break;
2056 2599
2057 /* we might have forked, so reify kernel state if necessary */ 2600 /* we might have forked, so reify kernel state if necessary */
2058 if (expect_false (postfork)) 2601 if (expect_false (postfork))
2059 loop_fork (EV_A); 2602 loop_fork (EV_A);
2060 2603
… …
2064 /* calculate blocking time */ 2607 /* calculate blocking time */
2065 { 2608 {
2066 ev_tstamp waittime = 0.; 2609 ev_tstamp waittime = 0.;
2067 ev_tstamp sleeptime = 0.; 2610 ev_tstamp sleeptime = 0.;
2068 2611
2612 /* remember old timestamp for io_blocktime calculation */
2613 ev_tstamp prev_mn_now = mn_now;
2614
2615 /* update time to cancel out callback processing overhead */
2616 time_update (EV_A_ 1e100);
2617
2618 /* from now on, we want a pipe-wake-up */
2619 pipe_write_wanted = 1;
2620
2621 ECB_MEMORY_FENCE; /* amke sure pipe_write_wanted is visible before we check for potential skips */
2622
2069 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2623 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2070 { 2624 {
2071 /* update time to cancel out callback processing overhead */
2072 time_update (EV_A_ 1e100);
2073
2074 waittime = MAX_BLOCKTIME; 2625 waittime = MAX_BLOCKTIME;
2075 2626
2076 if (timercnt) 2627 if (timercnt)
2077 { 2628 {
2078 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2629 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2079 if (waittime > to) waittime = to; 2630 if (waittime > to) waittime = to;
2080 } 2631 }
2081 2632
2082#if EV_PERIODIC_ENABLE 2633#if EV_PERIODIC_ENABLE
2083 if (periodiccnt) 2634 if (periodiccnt)
2084 { 2635 {
2085 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2636 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2086 if (waittime > to) waittime = to; 2637 if (waittime > to) waittime = to;
2087 } 2638 }
2088#endif 2639#endif
2089 2640
2641 /* don't let timeouts decrease the waittime below timeout_blocktime */
2090 if (expect_false (waittime < timeout_blocktime)) 2642 if (expect_false (waittime < timeout_blocktime))
2091 waittime = timeout_blocktime; 2643 waittime = timeout_blocktime;
2092 2644
2093 sleeptime = waittime - backend_fudge; 2645 /* at this point, we NEED to wait, so we have to ensure */
2646 /* to pass a minimum nonzero value to the backend */
2647 if (expect_false (waittime < backend_mintime))
2648 waittime = backend_mintime;
2094 2649
2650 /* extra check because io_blocktime is commonly 0 */
2095 if (expect_true (sleeptime > io_blocktime)) 2651 if (expect_false (io_blocktime))
2096 sleeptime = io_blocktime;
2097
2098 if (sleeptime)
2099 { 2652 {
2653 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2654
2655 if (sleeptime > waittime - backend_mintime)
2656 sleeptime = waittime - backend_mintime;
2657
2658 if (expect_true (sleeptime > 0.))
2659 {
2100 ev_sleep (sleeptime); 2660 ev_sleep (sleeptime);
2101 waittime -= sleeptime; 2661 waittime -= sleeptime;
2662 }
2102 } 2663 }
2103 } 2664 }
2104 2665
2666#if EV_FEATURE_API
2105 ++loop_count; 2667 ++loop_count;
2668#endif
2669 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2106 backend_poll (EV_A_ waittime); 2670 backend_poll (EV_A_ waittime);
2671 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2672
2673 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2674
2675 if (pipe_write_skipped)
2676 {
2677 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2678 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2679 }
2680
2107 2681
2108 /* update ev_rt_now, do magic */ 2682 /* update ev_rt_now, do magic */
2109 time_update (EV_A_ waittime + sleeptime); 2683 time_update (EV_A_ waittime + sleeptime);
2110 } 2684 }
2111 2685
… …
2118#if EV_IDLE_ENABLE 2692#if EV_IDLE_ENABLE
2119 /* queue idle watchers unless other events are pending */ 2693 /* queue idle watchers unless other events are pending */
2120 idle_reify (EV_A); 2694 idle_reify (EV_A);
2121#endif 2695#endif
2122 2696
2697#if EV_CHECK_ENABLE
2123 /* queue check watchers, to be executed first */ 2698 /* queue check watchers, to be executed first */
2124 if (expect_false (checkcnt)) 2699 if (expect_false (checkcnt))
2125 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2700 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2701#endif
2126 2702
2127 call_pending (EV_A); 2703 EV_INVOKE_PENDING;
2128 } 2704 }
2129 while (expect_true ( 2705 while (expect_true (
2130 activecnt 2706 activecnt
2131 && !loop_done 2707 && !loop_done
2132 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2708 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2133 )); 2709 ));
2134 2710
2135 if (loop_done == EVUNLOOP_ONE) 2711 if (loop_done == EVBREAK_ONE)
2136 loop_done = EVUNLOOP_CANCEL; 2712 loop_done = EVBREAK_CANCEL;
2713
2714#if EV_FEATURE_API
2715 --loop_depth;
2716#endif
2137} 2717}
2138 2718
2139void 2719void
2140ev_unloop (EV_P_ int how) 2720ev_break (EV_P_ int how)
2141{ 2721{
2142 loop_done = how; 2722 loop_done = how;
2143} 2723}
2144 2724
2145void 2725void
… …
2192inline_size void 2772inline_size void
2193wlist_del (WL *head, WL elem) 2773wlist_del (WL *head, WL elem)
2194{ 2774{
2195 while (*head) 2775 while (*head)
2196 { 2776 {
2197 if (*head == elem) 2777 if (expect_true (*head == elem))
2198 { 2778 {
2199 *head = elem->next; 2779 *head = elem->next;
2200 return; 2780 break;
2201 } 2781 }
2202 2782
2203 head = &(*head)->next; 2783 head = &(*head)->next;
2204 } 2784 }
2205} 2785}
… …
2233} 2813}
2234 2814
2235inline_size void 2815inline_size void
2236pri_adjust (EV_P_ W w) 2816pri_adjust (EV_P_ W w)
2237{ 2817{
2238 int pri = w->priority; 2818 int pri = ev_priority (w);
2239 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2819 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2240 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2820 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2241 w->priority = pri; 2821 ev_set_priority (w, pri);
2242} 2822}
2243 2823
2244inline_speed void 2824inline_speed void
2245ev_start (EV_P_ W w, int active) 2825ev_start (EV_P_ W w, int active)
2246{ 2826{
… …
2265 2845
2266 if (expect_false (ev_is_active (w))) 2846 if (expect_false (ev_is_active (w)))
2267 return; 2847 return;
2268 2848
2269 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2849 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2270 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2850 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2271 2851
2272 EV_FREQUENT_CHECK; 2852 EV_FREQUENT_CHECK;
2273 2853
2274 ev_start (EV_A_ (W)w, 1); 2854 ev_start (EV_A_ (W)w, 1);
2275 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2855 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2276 wlist_add (&anfds[fd].head, (WL)w); 2856 wlist_add (&anfds[fd].head, (WL)w);
2277 2857
2278 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 2858 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2279 w->events &= ~EV__IOFDSET; 2859 w->events &= ~EV__IOFDSET;
2280 2860
2281 EV_FREQUENT_CHECK; 2861 EV_FREQUENT_CHECK;
2282} 2862}
2283 2863
… …
2293 EV_FREQUENT_CHECK; 2873 EV_FREQUENT_CHECK;
2294 2874
2295 wlist_del (&anfds[w->fd].head, (WL)w); 2875 wlist_del (&anfds[w->fd].head, (WL)w);
2296 ev_stop (EV_A_ (W)w); 2876 ev_stop (EV_A_ (W)w);
2297 2877
2298 fd_change (EV_A_ w->fd, 1); 2878 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2299 2879
2300 EV_FREQUENT_CHECK; 2880 EV_FREQUENT_CHECK;
2301} 2881}
2302 2882
2303void noinline 2883void noinline
… …
2345 timers [active] = timers [timercnt + HEAP0]; 2925 timers [active] = timers [timercnt + HEAP0];
2346 adjustheap (timers, timercnt, active); 2926 adjustheap (timers, timercnt, active);
2347 } 2927 }
2348 } 2928 }
2349 2929
2350 EV_FREQUENT_CHECK;
2351
2352 ev_at (w) -= mn_now; 2930 ev_at (w) -= mn_now;
2353 2931
2354 ev_stop (EV_A_ (W)w); 2932 ev_stop (EV_A_ (W)w);
2933
2934 EV_FREQUENT_CHECK;
2355} 2935}
2356 2936
2357void noinline 2937void noinline
2358ev_timer_again (EV_P_ ev_timer *w) 2938ev_timer_again (EV_P_ ev_timer *w)
2359{ 2939{
… …
2377 } 2957 }
2378 2958
2379 EV_FREQUENT_CHECK; 2959 EV_FREQUENT_CHECK;
2380} 2960}
2381 2961
2962ev_tstamp
2963ev_timer_remaining (EV_P_ ev_timer *w)
2964{
2965 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2966}
2967
2382#if EV_PERIODIC_ENABLE 2968#if EV_PERIODIC_ENABLE
2383void noinline 2969void noinline
2384ev_periodic_start (EV_P_ ev_periodic *w) 2970ev_periodic_start (EV_P_ ev_periodic *w)
2385{ 2971{
2386 if (expect_false (ev_is_active (w))) 2972 if (expect_false (ev_is_active (w)))
… …
2389 if (w->reschedule_cb) 2975 if (w->reschedule_cb)
2390 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2976 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2391 else if (w->interval) 2977 else if (w->interval)
2392 { 2978 {
2393 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2979 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2394 /* this formula differs from the one in periodic_reify because we do not always round up */ 2980 periodic_recalc (EV_A_ w);
2395 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2396 } 2981 }
2397 else 2982 else
2398 ev_at (w) = w->offset; 2983 ev_at (w) = w->offset;
2399 2984
2400 EV_FREQUENT_CHECK; 2985 EV_FREQUENT_CHECK;
… …
2432 periodics [active] = periodics [periodiccnt + HEAP0]; 3017 periodics [active] = periodics [periodiccnt + HEAP0];
2433 adjustheap (periodics, periodiccnt, active); 3018 adjustheap (periodics, periodiccnt, active);
2434 } 3019 }
2435 } 3020 }
2436 3021
2437 EV_FREQUENT_CHECK;
2438
2439 ev_stop (EV_A_ (W)w); 3022 ev_stop (EV_A_ (W)w);
3023
3024 EV_FREQUENT_CHECK;
2440} 3025}
2441 3026
2442void noinline 3027void noinline
2443ev_periodic_again (EV_P_ ev_periodic *w) 3028ev_periodic_again (EV_P_ ev_periodic *w)
2444{ 3029{
… …
2450 3035
2451#ifndef SA_RESTART 3036#ifndef SA_RESTART
2452# define SA_RESTART 0 3037# define SA_RESTART 0
2453#endif 3038#endif
2454 3039
3040#if EV_SIGNAL_ENABLE
3041
2455void noinline 3042void noinline
2456ev_signal_start (EV_P_ ev_signal *w) 3043ev_signal_start (EV_P_ ev_signal *w)
2457{ 3044{
2458#if EV_MULTIPLICITY
2459 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2460#endif
2461 if (expect_false (ev_is_active (w))) 3045 if (expect_false (ev_is_active (w)))
2462 return; 3046 return;
2463 3047
2464 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3048 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2465 3049
2466 evpipe_init (EV_A); 3050#if EV_MULTIPLICITY
3051 assert (("libev: a signal must not be attached to two different loops",
3052 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2467 3053
2468 EV_FREQUENT_CHECK; 3054 signals [w->signum - 1].loop = EV_A;
3055#endif
2469 3056
3057 EV_FREQUENT_CHECK;
3058
3059#if EV_USE_SIGNALFD
3060 if (sigfd == -2)
2470 { 3061 {
2471#ifndef _WIN32 3062 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2472 sigset_t full, prev; 3063 if (sigfd < 0 && errno == EINVAL)
2473 sigfillset (&full); 3064 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2474 sigprocmask (SIG_SETMASK, &full, &prev);
2475#endif
2476 3065
2477 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3066 if (sigfd >= 0)
3067 {
3068 fd_intern (sigfd); /* doing it twice will not hurt */
2478 3069
2479#ifndef _WIN32 3070 sigemptyset (&sigfd_set);
2480 sigprocmask (SIG_SETMASK, &prev, 0); 3071
2481#endif 3072 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3073 ev_set_priority (&sigfd_w, EV_MAXPRI);
3074 ev_io_start (EV_A_ &sigfd_w);
3075 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3076 }
2482 } 3077 }
3078
3079 if (sigfd >= 0)
3080 {
3081 /* TODO: check .head */
3082 sigaddset (&sigfd_set, w->signum);
3083 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3084
3085 signalfd (sigfd, &sigfd_set, 0);
3086 }
3087#endif
2483 3088
2484 ev_start (EV_A_ (W)w, 1); 3089 ev_start (EV_A_ (W)w, 1);
2485 wlist_add (&signals [w->signum - 1].head, (WL)w); 3090 wlist_add (&signals [w->signum - 1].head, (WL)w);
2486 3091
2487 if (!((WL)w)->next) 3092 if (!((WL)w)->next)
3093# if EV_USE_SIGNALFD
3094 if (sigfd < 0) /*TODO*/
3095# endif
2488 { 3096 {
2489#if _WIN32 3097# ifdef _WIN32
3098 evpipe_init (EV_A);
3099
2490 signal (w->signum, ev_sighandler); 3100 signal (w->signum, ev_sighandler);
2491#else 3101# else
2492 struct sigaction sa; 3102 struct sigaction sa;
3103
3104 evpipe_init (EV_A);
3105
2493 sa.sa_handler = ev_sighandler; 3106 sa.sa_handler = ev_sighandler;
2494 sigfillset (&sa.sa_mask); 3107 sigfillset (&sa.sa_mask);
2495 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3108 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2496 sigaction (w->signum, &sa, 0); 3109 sigaction (w->signum, &sa, 0);
3110
3111 if (origflags & EVFLAG_NOSIGMASK)
3112 {
3113 sigemptyset (&sa.sa_mask);
3114 sigaddset (&sa.sa_mask, w->signum);
3115 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3116 }
2497#endif 3117#endif
2498 } 3118 }
2499 3119
2500 EV_FREQUENT_CHECK; 3120 EV_FREQUENT_CHECK;
2501} 3121}
2502 3122
2503void noinline 3123void noinline
… …
2511 3131
2512 wlist_del (&signals [w->signum - 1].head, (WL)w); 3132 wlist_del (&signals [w->signum - 1].head, (WL)w);
2513 ev_stop (EV_A_ (W)w); 3133 ev_stop (EV_A_ (W)w);
2514 3134
2515 if (!signals [w->signum - 1].head) 3135 if (!signals [w->signum - 1].head)
3136 {
3137#if EV_MULTIPLICITY
3138 signals [w->signum - 1].loop = 0; /* unattach from signal */
3139#endif
3140#if EV_USE_SIGNALFD
3141 if (sigfd >= 0)
3142 {
3143 sigset_t ss;
3144
3145 sigemptyset (&ss);
3146 sigaddset (&ss, w->signum);
3147 sigdelset (&sigfd_set, w->signum);
3148
3149 signalfd (sigfd, &sigfd_set, 0);
3150 sigprocmask (SIG_UNBLOCK, &ss, 0);
3151 }
3152 else
3153#endif
2516 signal (w->signum, SIG_DFL); 3154 signal (w->signum, SIG_DFL);
3155 }
2517 3156
2518 EV_FREQUENT_CHECK; 3157 EV_FREQUENT_CHECK;
2519} 3158}
3159
3160#endif
3161
3162#if EV_CHILD_ENABLE
2520 3163
2521void 3164void
2522ev_child_start (EV_P_ ev_child *w) 3165ev_child_start (EV_P_ ev_child *w)
2523{ 3166{
2524#if EV_MULTIPLICITY 3167#if EV_MULTIPLICITY
… …
2528 return; 3171 return;
2529 3172
2530 EV_FREQUENT_CHECK; 3173 EV_FREQUENT_CHECK;
2531 3174
2532 ev_start (EV_A_ (W)w, 1); 3175 ev_start (EV_A_ (W)w, 1);
2533 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3176 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2534 3177
2535 EV_FREQUENT_CHECK; 3178 EV_FREQUENT_CHECK;
2536} 3179}
2537 3180
2538void 3181void
… …
2542 if (expect_false (!ev_is_active (w))) 3185 if (expect_false (!ev_is_active (w)))
2543 return; 3186 return;
2544 3187
2545 EV_FREQUENT_CHECK; 3188 EV_FREQUENT_CHECK;
2546 3189
2547 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3190 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2548 ev_stop (EV_A_ (W)w); 3191 ev_stop (EV_A_ (W)w);
2549 3192
2550 EV_FREQUENT_CHECK; 3193 EV_FREQUENT_CHECK;
2551} 3194}
3195
3196#endif
2552 3197
2553#if EV_STAT_ENABLE 3198#if EV_STAT_ENABLE
2554 3199
2555# ifdef _WIN32 3200# ifdef _WIN32
2556# undef lstat 3201# undef lstat
… …
2562#define MIN_STAT_INTERVAL 0.1074891 3207#define MIN_STAT_INTERVAL 0.1074891
2563 3208
2564static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3209static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2565 3210
2566#if EV_USE_INOTIFY 3211#if EV_USE_INOTIFY
2567# define EV_INOTIFY_BUFSIZE 8192 3212
3213/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3214# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2568 3215
2569static void noinline 3216static void noinline
2570infy_add (EV_P_ ev_stat *w) 3217infy_add (EV_P_ ev_stat *w)
2571{ 3218{
2572 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); 3219 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);
2573 3220
2574 if (w->wd < 0) 3221 if (w->wd >= 0)
3222 {
3223 struct statfs sfs;
3224
3225 /* now local changes will be tracked by inotify, but remote changes won't */
3226 /* unless the filesystem is known to be local, we therefore still poll */
3227 /* also do poll on <2.6.25, but with normal frequency */
3228
3229 if (!fs_2625)
3230 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3231 else if (!statfs (w->path, &sfs)
3232 && (sfs.f_type == 0x1373 /* devfs */
3233 || sfs.f_type == 0xEF53 /* ext2/3 */
3234 || sfs.f_type == 0x3153464a /* jfs */
3235 || sfs.f_type == 0x52654973 /* reiser3 */
3236 || sfs.f_type == 0x01021994 /* tempfs */
3237 || sfs.f_type == 0x58465342 /* xfs */))
3238 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3239 else
3240 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2575 { 3241 }
3242 else
3243 {
3244 /* can't use inotify, continue to stat */
2576 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3245 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2577 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2578 3246
2579 /* monitor some parent directory for speedup hints */ 3247 /* if path is not there, monitor some parent directory for speedup hints */
2580 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3248 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2581 /* but an efficiency issue only */ 3249 /* but an efficiency issue only */
2582 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3250 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2583 { 3251 {
2584 char path [4096]; 3252 char path [4096];
… …
2594 if (!pend || pend == path) 3262 if (!pend || pend == path)
2595 break; 3263 break;
2596 3264
2597 *pend = 0; 3265 *pend = 0;
2598 w->wd = inotify_add_watch (fs_fd, path, mask); 3266 w->wd = inotify_add_watch (fs_fd, path, mask);
2599 } 3267 }
2600 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3268 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2601 } 3269 }
2602 } 3270 }
2603 3271
2604 if (w->wd >= 0) 3272 if (w->wd >= 0)
2605 {
2606 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3273 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2607 3274
2608 /* now local changes will be tracked by inotify, but remote changes won't */ 3275 /* now re-arm timer, if required */
2609 /* unless the filesystem it known to be local, we therefore still poll */ 3276 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2610 /* also do poll on <2.6.25, but with normal frequency */
2611 struct statfs sfs;
2612
2613 if (fs_2625 && !statfs (w->path, &sfs))
2614 if (sfs.f_type == 0x1373 /* devfs */
2615 || sfs.f_type == 0xEF53 /* ext2/3 */
2616 || sfs.f_type == 0x3153464a /* jfs */
2617 || sfs.f_type == 0x52654973 /* reiser3 */
2618 || sfs.f_type == 0x01021994 /* tempfs */
2619 || sfs.f_type == 0x58465342 /* xfs */)
2620 return;
2621
2622 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2623 ev_timer_again (EV_A_ &w->timer); 3277 ev_timer_again (EV_A_ &w->timer);
2624 } 3278 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2625} 3279}
2626 3280
2627static void noinline 3281static void noinline
2628infy_del (EV_P_ ev_stat *w) 3282infy_del (EV_P_ ev_stat *w)
2629{ 3283{
… …
2632 3286
2633 if (wd < 0) 3287 if (wd < 0)
2634 return; 3288 return;
2635 3289
2636 w->wd = -2; 3290 w->wd = -2;
2637 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3291 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2638 wlist_del (&fs_hash [slot].head, (WL)w); 3292 wlist_del (&fs_hash [slot].head, (WL)w);
2639 3293
2640 /* remove this watcher, if others are watching it, they will rearm */ 3294 /* remove this watcher, if others are watching it, they will rearm */
2641 inotify_rm_watch (fs_fd, wd); 3295 inotify_rm_watch (fs_fd, wd);
2642} 3296}
… …
2644static void noinline 3298static void noinline
2645infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3299infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2646{ 3300{
2647 if (slot < 0) 3301 if (slot < 0)
2648 /* overflow, need to check for all hash slots */ 3302 /* overflow, need to check for all hash slots */
2649 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3303 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2650 infy_wd (EV_A_ slot, wd, ev); 3304 infy_wd (EV_A_ slot, wd, ev);
2651 else 3305 else
2652 { 3306 {
2653 WL w_; 3307 WL w_;
2654 3308
2655 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3309 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2656 { 3310 {
2657 ev_stat *w = (ev_stat *)w_; 3311 ev_stat *w = (ev_stat *)w_;
2658 w_ = w_->next; /* lets us remove this watcher and all before it */ 3312 w_ = w_->next; /* lets us remove this watcher and all before it */
2659 3313
2660 if (w->wd == wd || wd == -1) 3314 if (w->wd == wd || wd == -1)
2661 { 3315 {
2662 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3316 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2663 { 3317 {
2664 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3318 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2665 w->wd = -1; 3319 w->wd = -1;
2666 infy_add (EV_A_ w); /* re-add, no matter what */ 3320 infy_add (EV_A_ w); /* re-add, no matter what */
2667 } 3321 }
2668 3322
2669 stat_timer_cb (EV_A_ &w->timer, 0); 3323 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2674 3328
2675static void 3329static void
2676infy_cb (EV_P_ ev_io *w, int revents) 3330infy_cb (EV_P_ ev_io *w, int revents)
2677{ 3331{
2678 char buf [EV_INOTIFY_BUFSIZE]; 3332 char buf [EV_INOTIFY_BUFSIZE];
2679 struct inotify_event *ev = (struct inotify_event *)buf;
2680 int ofs; 3333 int ofs;
2681 int len = read (fs_fd, buf, sizeof (buf)); 3334 int len = read (fs_fd, buf, sizeof (buf));
2682 3335
2683 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3336 for (ofs = 0; ofs < len; )
3337 {
3338 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2684 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3339 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3340 ofs += sizeof (struct inotify_event) + ev->len;
3341 }
2685} 3342}
2686 3343
2687inline_size void 3344inline_size void ecb_cold
2688check_2625 (EV_P) 3345ev_check_2625 (EV_P)
2689{ 3346{
2690 /* kernels < 2.6.25 are borked 3347 /* kernels < 2.6.25 are borked
2691 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3348 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2692 */ 3349 */
2693 struct utsname buf; 3350 if (ev_linux_version () < 0x020619)
2694 int major, minor, micro;
2695
2696 if (uname (&buf))
2697 return; 3351 return;
2698 3352
2699 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2700 return;
2701
2702 if (major < 2
2703 || (major == 2 && minor < 6)
2704 || (major == 2 && minor == 6 && micro < 25))
2705 return;
2706
2707 fs_2625 = 1; 3353 fs_2625 = 1;
3354}
3355
3356inline_size int
3357infy_newfd (void)
3358{
3359#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3360 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3361 if (fd >= 0)
3362 return fd;
3363#endif
3364 return inotify_init ();
2708} 3365}
2709 3366
2710inline_size void 3367inline_size void
2711infy_init (EV_P) 3368infy_init (EV_P)
2712{ 3369{
2713 if (fs_fd != -2) 3370 if (fs_fd != -2)
2714 return; 3371 return;
2715 3372
2716 fs_fd = -1; 3373 fs_fd = -1;
2717 3374
2718 check_2625 (EV_A); 3375 ev_check_2625 (EV_A);
2719 3376
2720 fs_fd = inotify_init (); 3377 fs_fd = infy_newfd ();
2721 3378
2722 if (fs_fd >= 0) 3379 if (fs_fd >= 0)
2723 { 3380 {
3381 fd_intern (fs_fd);
2724 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3382 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2725 ev_set_priority (&fs_w, EV_MAXPRI); 3383 ev_set_priority (&fs_w, EV_MAXPRI);
2726 ev_io_start (EV_A_ &fs_w); 3384 ev_io_start (EV_A_ &fs_w);
3385 ev_unref (EV_A);
2727 } 3386 }
2728} 3387}
2729 3388
2730inline_size void 3389inline_size void
2731infy_fork (EV_P) 3390infy_fork (EV_P)
… …
2733 int slot; 3392 int slot;
2734 3393
2735 if (fs_fd < 0) 3394 if (fs_fd < 0)
2736 return; 3395 return;
2737 3396
3397 ev_ref (EV_A);
3398 ev_io_stop (EV_A_ &fs_w);
2738 close (fs_fd); 3399 close (fs_fd);
2739 fs_fd = inotify_init (); 3400 fs_fd = infy_newfd ();
2740 3401
3402 if (fs_fd >= 0)
3403 {
3404 fd_intern (fs_fd);
3405 ev_io_set (&fs_w, fs_fd, EV_READ);
3406 ev_io_start (EV_A_ &fs_w);
3407 ev_unref (EV_A);
3408 }
3409
2741 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3410 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2742 { 3411 {
2743 WL w_ = fs_hash [slot].head; 3412 WL w_ = fs_hash [slot].head;
2744 fs_hash [slot].head = 0; 3413 fs_hash [slot].head = 0;
2745 3414
2746 while (w_) 3415 while (w_)
… …
2751 w->wd = -1; 3420 w->wd = -1;
2752 3421
2753 if (fs_fd >= 0) 3422 if (fs_fd >= 0)
2754 infy_add (EV_A_ w); /* re-add, no matter what */ 3423 infy_add (EV_A_ w); /* re-add, no matter what */
2755 else 3424 else
3425 {
3426 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3427 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2756 ev_timer_again (EV_A_ &w->timer); 3428 ev_timer_again (EV_A_ &w->timer);
3429 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3430 }
2757 } 3431 }
2758 } 3432 }
2759} 3433}
2760 3434
2761#endif 3435#endif
… …
2778static void noinline 3452static void noinline
2779stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3453stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2780{ 3454{
2781 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3455 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2782 3456
2783 /* we copy this here each the time so that */ 3457 ev_statdata prev = w->attr;
2784 /* prev has the old value when the callback gets invoked */
2785 w->prev = w->attr;
2786 ev_stat_stat (EV_A_ w); 3458 ev_stat_stat (EV_A_ w);
2787 3459
2788 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3460 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2789 if ( 3461 if (
2790 w->prev.st_dev != w->attr.st_dev 3462 prev.st_dev != w->attr.st_dev
2791 || w->prev.st_ino != w->attr.st_ino 3463 || prev.st_ino != w->attr.st_ino
2792 || w->prev.st_mode != w->attr.st_mode 3464 || prev.st_mode != w->attr.st_mode
2793 || w->prev.st_nlink != w->attr.st_nlink 3465 || prev.st_nlink != w->attr.st_nlink
2794 || w->prev.st_uid != w->attr.st_uid 3466 || prev.st_uid != w->attr.st_uid
2795 || w->prev.st_gid != w->attr.st_gid 3467 || prev.st_gid != w->attr.st_gid
2796 || w->prev.st_rdev != w->attr.st_rdev 3468 || prev.st_rdev != w->attr.st_rdev
2797 || w->prev.st_size != w->attr.st_size 3469 || prev.st_size != w->attr.st_size
2798 || w->prev.st_atime != w->attr.st_atime 3470 || prev.st_atime != w->attr.st_atime
2799 || w->prev.st_mtime != w->attr.st_mtime 3471 || prev.st_mtime != w->attr.st_mtime
2800 || w->prev.st_ctime != w->attr.st_ctime 3472 || prev.st_ctime != w->attr.st_ctime
2801 ) { 3473 ) {
3474 /* we only update w->prev on actual differences */
3475 /* in case we test more often than invoke the callback, */
3476 /* to ensure that prev is always different to attr */
3477 w->prev = prev;
3478
2802 #if EV_USE_INOTIFY 3479 #if EV_USE_INOTIFY
2803 if (fs_fd >= 0) 3480 if (fs_fd >= 0)
2804 { 3481 {
2805 infy_del (EV_A_ w); 3482 infy_del (EV_A_ w);
2806 infy_add (EV_A_ w); 3483 infy_add (EV_A_ w);
… …
2831 3508
2832 if (fs_fd >= 0) 3509 if (fs_fd >= 0)
2833 infy_add (EV_A_ w); 3510 infy_add (EV_A_ w);
2834 else 3511 else
2835#endif 3512#endif
3513 {
2836 ev_timer_again (EV_A_ &w->timer); 3514 ev_timer_again (EV_A_ &w->timer);
3515 ev_unref (EV_A);
3516 }
2837 3517
2838 ev_start (EV_A_ (W)w, 1); 3518 ev_start (EV_A_ (W)w, 1);
2839 3519
2840 EV_FREQUENT_CHECK; 3520 EV_FREQUENT_CHECK;
2841} 3521}
… …
2850 EV_FREQUENT_CHECK; 3530 EV_FREQUENT_CHECK;
2851 3531
2852#if EV_USE_INOTIFY 3532#if EV_USE_INOTIFY
2853 infy_del (EV_A_ w); 3533 infy_del (EV_A_ w);
2854#endif 3534#endif
3535
3536 if (ev_is_active (&w->timer))
3537 {
3538 ev_ref (EV_A);
2855 ev_timer_stop (EV_A_ &w->timer); 3539 ev_timer_stop (EV_A_ &w->timer);
3540 }
2856 3541
2857 ev_stop (EV_A_ (W)w); 3542 ev_stop (EV_A_ (W)w);
2858 3543
2859 EV_FREQUENT_CHECK; 3544 EV_FREQUENT_CHECK;
2860} 3545}
… …
2905 3590
2906 EV_FREQUENT_CHECK; 3591 EV_FREQUENT_CHECK;
2907} 3592}
2908#endif 3593#endif
2909 3594
3595#if EV_PREPARE_ENABLE
2910void 3596void
2911ev_prepare_start (EV_P_ ev_prepare *w) 3597ev_prepare_start (EV_P_ ev_prepare *w)
2912{ 3598{
2913 if (expect_false (ev_is_active (w))) 3599 if (expect_false (ev_is_active (w)))
2914 return; 3600 return;
… …
2940 3626
2941 ev_stop (EV_A_ (W)w); 3627 ev_stop (EV_A_ (W)w);
2942 3628
2943 EV_FREQUENT_CHECK; 3629 EV_FREQUENT_CHECK;
2944} 3630}
3631#endif
2945 3632
3633#if EV_CHECK_ENABLE
2946void 3634void
2947ev_check_start (EV_P_ ev_check *w) 3635ev_check_start (EV_P_ ev_check *w)
2948{ 3636{
2949 if (expect_false (ev_is_active (w))) 3637 if (expect_false (ev_is_active (w)))
2950 return; 3638 return;
… …
2976 3664
2977 ev_stop (EV_A_ (W)w); 3665 ev_stop (EV_A_ (W)w);
2978 3666
2979 EV_FREQUENT_CHECK; 3667 EV_FREQUENT_CHECK;
2980} 3668}
3669#endif
2981 3670
2982#if EV_EMBED_ENABLE 3671#if EV_EMBED_ENABLE
2983void noinline 3672void noinline
2984ev_embed_sweep (EV_P_ ev_embed *w) 3673ev_embed_sweep (EV_P_ ev_embed *w)
2985{ 3674{
2986 ev_loop (w->other, EVLOOP_NONBLOCK); 3675 ev_run (w->other, EVRUN_NOWAIT);
2987} 3676}
2988 3677
2989static void 3678static void
2990embed_io_cb (EV_P_ ev_io *io, int revents) 3679embed_io_cb (EV_P_ ev_io *io, int revents)
2991{ 3680{
2992 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3681 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2993 3682
2994 if (ev_cb (w)) 3683 if (ev_cb (w))
2995 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3684 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2996 else 3685 else
2997 ev_loop (w->other, EVLOOP_NONBLOCK); 3686 ev_run (w->other, EVRUN_NOWAIT);
2998} 3687}
2999 3688
3000static void 3689static void
3001embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3690embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3002{ 3691{
3003 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3692 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3004 3693
3005 { 3694 {
3006 struct ev_loop *loop = w->other; 3695 EV_P = w->other;
3007 3696
3008 while (fdchangecnt) 3697 while (fdchangecnt)
3009 { 3698 {
3010 fd_reify (EV_A); 3699 fd_reify (EV_A);
3011 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3700 ev_run (EV_A_ EVRUN_NOWAIT);
3012 } 3701 }
3013 } 3702 }
3014} 3703}
3015 3704
3016static void 3705static void
… …
3019 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3708 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3020 3709
3021 ev_embed_stop (EV_A_ w); 3710 ev_embed_stop (EV_A_ w);
3022 3711
3023 { 3712 {
3024 struct ev_loop *loop = w->other; 3713 EV_P = w->other;
3025 3714
3026 ev_loop_fork (EV_A); 3715 ev_loop_fork (EV_A);
3027 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3716 ev_run (EV_A_ EVRUN_NOWAIT);
3028 } 3717 }
3029 3718
3030 ev_embed_start (EV_A_ w); 3719 ev_embed_start (EV_A_ w);
3031} 3720}
3032 3721
… …
3043{ 3732{
3044 if (expect_false (ev_is_active (w))) 3733 if (expect_false (ev_is_active (w)))
3045 return; 3734 return;
3046 3735
3047 { 3736 {
3048 struct ev_loop *loop = w->other; 3737 EV_P = w->other;
3049 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3738 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3050 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3739 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3051 } 3740 }
3052 3741
3053 EV_FREQUENT_CHECK; 3742 EV_FREQUENT_CHECK;
… …
3080 3769
3081 ev_io_stop (EV_A_ &w->io); 3770 ev_io_stop (EV_A_ &w->io);
3082 ev_prepare_stop (EV_A_ &w->prepare); 3771 ev_prepare_stop (EV_A_ &w->prepare);
3083 ev_fork_stop (EV_A_ &w->fork); 3772 ev_fork_stop (EV_A_ &w->fork);
3084 3773
3774 ev_stop (EV_A_ (W)w);
3775
3085 EV_FREQUENT_CHECK; 3776 EV_FREQUENT_CHECK;
3086} 3777}
3087#endif 3778#endif
3088 3779
3089#if EV_FORK_ENABLE 3780#if EV_FORK_ENABLE
… …
3122 3813
3123 EV_FREQUENT_CHECK; 3814 EV_FREQUENT_CHECK;
3124} 3815}
3125#endif 3816#endif
3126 3817
3818#if EV_CLEANUP_ENABLE
3819void
3820ev_cleanup_start (EV_P_ ev_cleanup *w)
3821{
3822 if (expect_false (ev_is_active (w)))
3823 return;
3824
3825 EV_FREQUENT_CHECK;
3826
3827 ev_start (EV_A_ (W)w, ++cleanupcnt);
3828 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3829 cleanups [cleanupcnt - 1] = w;
3830
3831 /* cleanup watchers should never keep a refcount on the loop */
3832 ev_unref (EV_A);
3833 EV_FREQUENT_CHECK;
3834}
3835
3836void
3837ev_cleanup_stop (EV_P_ ev_cleanup *w)
3838{
3839 clear_pending (EV_A_ (W)w);
3840 if (expect_false (!ev_is_active (w)))
3841 return;
3842
3843 EV_FREQUENT_CHECK;
3844 ev_ref (EV_A);
3845
3846 {
3847 int active = ev_active (w);
3848
3849 cleanups [active - 1] = cleanups [--cleanupcnt];
3850 ev_active (cleanups [active - 1]) = active;
3851 }
3852
3853 ev_stop (EV_A_ (W)w);
3854
3855 EV_FREQUENT_CHECK;
3856}
3857#endif
3858
3127#if EV_ASYNC_ENABLE 3859#if EV_ASYNC_ENABLE
3128void 3860void
3129ev_async_start (EV_P_ ev_async *w) 3861ev_async_start (EV_P_ ev_async *w)
3130{ 3862{
3131 if (expect_false (ev_is_active (w))) 3863 if (expect_false (ev_is_active (w)))
3132 return; 3864 return;
3133 3865
3866 w->sent = 0;
3867
3134 evpipe_init (EV_A); 3868 evpipe_init (EV_A);
3135 3869
3136 EV_FREQUENT_CHECK; 3870 EV_FREQUENT_CHECK;
3137 3871
3138 ev_start (EV_A_ (W)w, ++asynccnt); 3872 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3165 3899
3166void 3900void
3167ev_async_send (EV_P_ ev_async *w) 3901ev_async_send (EV_P_ ev_async *w)
3168{ 3902{
3169 w->sent = 1; 3903 w->sent = 1;
3170 evpipe_write (EV_A_ &gotasync); 3904 evpipe_write (EV_A_ &async_pending);
3171} 3905}
3172#endif 3906#endif
3173 3907
3174/*****************************************************************************/ 3908/*****************************************************************************/
3175 3909
… …
3215{ 3949{
3216 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3950 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3217 3951
3218 if (expect_false (!once)) 3952 if (expect_false (!once))
3219 { 3953 {
3220 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3954 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3221 return; 3955 return;
3222 } 3956 }
3223 3957
3224 once->cb = cb; 3958 once->cb = cb;
3225 once->arg = arg; 3959 once->arg = arg;
… …
3240} 3974}
3241 3975
3242/*****************************************************************************/ 3976/*****************************************************************************/
3243 3977
3244#if EV_WALK_ENABLE 3978#if EV_WALK_ENABLE
3245void 3979void ecb_cold
3246ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 3980ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3247{ 3981{
3248 int i, j; 3982 int i, j;
3249 ev_watcher_list *wl, *wn; 3983 ev_watcher_list *wl, *wn;
3250 3984
… …
3312 if (types & EV_ASYNC) 4046 if (types & EV_ASYNC)
3313 for (i = asynccnt; i--; ) 4047 for (i = asynccnt; i--; )
3314 cb (EV_A_ EV_ASYNC, asyncs [i]); 4048 cb (EV_A_ EV_ASYNC, asyncs [i]);
3315#endif 4049#endif
3316 4050
4051#if EV_PREPARE_ENABLE
3317 if (types & EV_PREPARE) 4052 if (types & EV_PREPARE)
3318 for (i = preparecnt; i--; ) 4053 for (i = preparecnt; i--; )
3319#if EV_EMBED_ENABLE 4054# if EV_EMBED_ENABLE
3320 if (ev_cb (prepares [i]) != embed_prepare_cb) 4055 if (ev_cb (prepares [i]) != embed_prepare_cb)
3321#endif 4056# endif
3322 cb (EV_A_ EV_PREPARE, prepares [i]); 4057 cb (EV_A_ EV_PREPARE, prepares [i]);
4058#endif
3323 4059
4060#if EV_CHECK_ENABLE
3324 if (types & EV_CHECK) 4061 if (types & EV_CHECK)
3325 for (i = checkcnt; i--; ) 4062 for (i = checkcnt; i--; )
3326 cb (EV_A_ EV_CHECK, checks [i]); 4063 cb (EV_A_ EV_CHECK, checks [i]);
4064#endif
3327 4065
4066#if EV_SIGNAL_ENABLE
3328 if (types & EV_SIGNAL) 4067 if (types & EV_SIGNAL)
3329 for (i = 0; i < signalmax; ++i) 4068 for (i = 0; i < EV_NSIG - 1; ++i)
3330 for (wl = signals [i].head; wl; ) 4069 for (wl = signals [i].head; wl; )
3331 { 4070 {
3332 wn = wl->next; 4071 wn = wl->next;
3333 cb (EV_A_ EV_SIGNAL, wl); 4072 cb (EV_A_ EV_SIGNAL, wl);
3334 wl = wn; 4073 wl = wn;
3335 } 4074 }
4075#endif
3336 4076
4077#if EV_CHILD_ENABLE
3337 if (types & EV_CHILD) 4078 if (types & EV_CHILD)
3338 for (i = EV_PID_HASHSIZE; i--; ) 4079 for (i = (EV_PID_HASHSIZE); i--; )
3339 for (wl = childs [i]; wl; ) 4080 for (wl = childs [i]; wl; )
3340 { 4081 {
3341 wn = wl->next; 4082 wn = wl->next;
3342 cb (EV_A_ EV_CHILD, wl); 4083 cb (EV_A_ EV_CHILD, wl);
3343 wl = wn; 4084 wl = wn;
3344 } 4085 }
4086#endif
3345/* EV_STAT 0x00001000 /* stat data changed */ 4087/* EV_STAT 0x00001000 /* stat data changed */
3346/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4088/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3347} 4089}
3348#endif 4090#endif
3349 4091
3350#if EV_MULTIPLICITY 4092#if EV_MULTIPLICITY
3351 #include "ev_wrap.h" 4093 #include "ev_wrap.h"
3352#endif 4094#endif
3353 4095
3354#ifdef __cplusplus 4096EV_CPP(})
3355}
3356#endif
3357 4097

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