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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 1.458 by root, Sun Oct 27 16:26:07 2013 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) 2007,2008,2009,2010,2011,2012 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"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
164#endif 197#endif
165 198
166#ifndef _WIN32 199#ifndef _WIN32
167# include <sys/time.h> 200# include <sys/time.h>
168# include <sys/wait.h> 201# include <sys/wait.h>
169# include <unistd.h> 202# include <unistd.h>
170#else 203#else
171# include <io.h> 204# include <io.h>
172# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
173# include <windows.h> 207# include <windows.h>
174# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
176# endif 210# endif
211# undef EV_AVOID_STDIO
177#endif 212#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
178 221
179/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
223
224/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG
226/* use what's provided */
227#elif defined NSIG
228# define EV_NSIG (NSIG)
229#elif defined _NSIG
230# define EV_NSIG (_NSIG)
231#elif defined SIGMAX
232# define EV_NSIG (SIGMAX+1)
233#elif defined SIG_MAX
234# define EV_NSIG (SIG_MAX+1)
235#elif defined _SIG_MAX
236# define EV_NSIG (_SIG_MAX+1)
237#elif defined MAXSIG
238# define EV_NSIG (MAXSIG+1)
239#elif defined MAX_SIG
240# define EV_NSIG (MAX_SIG+1)
241#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else
246# error "unable to find value for NSIG, please report"
247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
249# define EV_NSIG 65
250#endif
251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
180 255
181#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 259# else
185# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
186# endif 261# endif
187#endif 262#endif
188 263
189#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 266# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 267# else
193# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
194# endif 269# endif
195#endif 270#endif
196 271
… …
198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 274#endif
200 275
201#ifndef EV_USE_NANOSLEEP 276#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 277# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 278# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 279# else
205# define EV_USE_NANOSLEEP 0 280# define EV_USE_NANOSLEEP 0
206# endif 281# endif
207#endif 282#endif
208 283
209#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 286#endif
212 287
213#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
214# ifdef _WIN32 289# ifdef _WIN32
215# define EV_USE_POLL 0 290# define EV_USE_POLL 0
216# else 291# else
217# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 293# endif
219#endif 294#endif
220 295
221#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 299# else
225# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
226# endif 301# endif
227#endif 302#endif
228 303
… …
234# define EV_USE_PORT 0 309# define EV_USE_PORT 0
235#endif 310#endif
236 311
237#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 315# else
241# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
242# endif 317# endif
243#endif 318#endif
244 319
245#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 321# 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 322#endif
252 323
253#ifndef EV_INOTIFY_HASHSIZE 324#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 325# 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 326#endif
260 327
261#ifndef EV_USE_EVENTFD 328#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 330# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 331# else
265# define EV_USE_EVENTFD 0 332# define EV_USE_EVENTFD 0
333# endif
334#endif
335
336#ifndef EV_USE_SIGNALFD
337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
338# define EV_USE_SIGNALFD EV_FEATURE_OS
339# else
340# define EV_USE_SIGNALFD 0
266# endif 341# endif
267#endif 342#endif
268 343
269#if 0 /* debugging */ 344#if 0 /* debugging */
270# define EV_VERIFY 3 345# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 346# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 347# define EV_HEAP_CACHE_AT 1
273#endif 348#endif
274 349
275#ifndef EV_VERIFY 350#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 352#endif
278 353
279#ifndef EV_USE_4HEAP 354#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 355# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 356#endif
282 357
283#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
360#endif
361
362#ifdef ANDROID
363/* supposedly, android doesn't typedef fd_mask */
364# undef EV_USE_SELECT
365# define EV_USE_SELECT 0
366/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
367# undef EV_USE_CLOCK_SYSCALL
368# define EV_USE_CLOCK_SYSCALL 0
369#endif
370
371/* aix's poll.h seems to cause lots of trouble */
372#ifdef _AIX
373/* AIX has a completely broken poll.h header */
374# undef EV_USE_POLL
375# define EV_USE_POLL 0
376#endif
377
378/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
379/* which makes programs even slower. might work on other unices, too. */
380#if EV_USE_CLOCK_SYSCALL
381# include <sys/syscall.h>
382# ifdef SYS_clock_gettime
383# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
384# undef EV_USE_MONOTONIC
385# define EV_USE_MONOTONIC 1
386# else
387# undef EV_USE_CLOCK_SYSCALL
388# define EV_USE_CLOCK_SYSCALL 0
389# endif
285#endif 390#endif
286 391
287/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 392/* this block fixes any misconfiguration where we know we run into trouble otherwise */
288 393
289#ifndef CLOCK_MONOTONIC 394#ifndef CLOCK_MONOTONIC
… …
300# undef EV_USE_INOTIFY 405# undef EV_USE_INOTIFY
301# define EV_USE_INOTIFY 0 406# define EV_USE_INOTIFY 0
302#endif 407#endif
303 408
304#if !EV_USE_NANOSLEEP 409#if !EV_USE_NANOSLEEP
305# ifndef _WIN32 410/* hp-ux has it in sys/time.h, which we unconditionally include above */
411# if !defined _WIN32 && !defined __hpux
306# include <sys/select.h> 412# include <sys/select.h>
307# endif 413# endif
308#endif 414#endif
309 415
310#if EV_USE_INOTIFY 416#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h> 417# include <sys/statfs.h>
313# include <sys/inotify.h> 418# include <sys/inotify.h>
314/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 419/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
315# ifndef IN_DONT_FOLLOW 420# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY 421# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 422# define EV_USE_INOTIFY 0
318# endif 423# endif
319#endif 424#endif
320 425
321#if EV_SELECT_IS_WINSOCKET
322# include <winsock.h>
323#endif
324
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 426#if EV_USE_EVENTFD
335/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336# include <stdint.h> 428# include <stdint.h>
337# ifdef __cplusplus 429# ifndef EFD_NONBLOCK
338extern "C" { 430# define EFD_NONBLOCK O_NONBLOCK
339# endif 431# endif
340int eventfd (unsigned int initval, int flags); 432# ifndef EFD_CLOEXEC
341# ifdef __cplusplus 433# ifdef O_CLOEXEC
342} 434# define EFD_CLOEXEC O_CLOEXEC
435# else
436# define EFD_CLOEXEC 02000000
437# endif
343# endif 438# endif
439EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
440#endif
441
442#if EV_USE_SIGNALFD
443/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
444# include <stdint.h>
445# ifndef SFD_NONBLOCK
446# define SFD_NONBLOCK O_NONBLOCK
447# endif
448# ifndef SFD_CLOEXEC
449# ifdef O_CLOEXEC
450# define SFD_CLOEXEC O_CLOEXEC
451# else
452# define SFD_CLOEXEC 02000000
453# endif
454# endif
455EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
456
457struct signalfd_siginfo
458{
459 uint32_t ssi_signo;
460 char pad[128 - sizeof (uint32_t)];
461};
344#endif 462#endif
345 463
346/**/ 464/**/
347 465
348#if EV_VERIFY >= 3 466#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 467# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 468#else
351# define EV_FREQUENT_CHECK do { } while (0) 469# define EV_FREQUENT_CHECK do { } while (0)
352#endif 470#endif
353 471
354/* 472/*
355 * This is used to avoid floating point rounding problems. 473 * 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. 474 * This value is good at least till the year 4000.
360 * Better solutions welcome.
361 */ 475 */
362#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 476#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
477/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
363 478
364#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 479#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) */ 480#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 */
367 481
482#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
483#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
484
485/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
486/* ECB.H BEGIN */
487/*
488 * libecb - http://software.schmorp.de/pkg/libecb
489 *
490 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
491 * Copyright (©) 2011 Emanuele Giaquinta
492 * All rights reserved.
493 *
494 * Redistribution and use in source and binary forms, with or without modifica-
495 * tion, are permitted provided that the following conditions are met:
496 *
497 * 1. Redistributions of source code must retain the above copyright notice,
498 * this list of conditions and the following disclaimer.
499 *
500 * 2. Redistributions in binary form must reproduce the above copyright
501 * notice, this list of conditions and the following disclaimer in the
502 * documentation and/or other materials provided with the distribution.
503 *
504 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
505 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
506 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
507 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
508 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
509 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
510 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
511 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
512 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
513 * OF THE POSSIBILITY OF SUCH DAMAGE.
514 */
515
516#ifndef ECB_H
517#define ECB_H
518
519/* 16 bits major, 16 bits minor */
520#define ECB_VERSION 0x00010003
521
522#ifdef _WIN32
523 typedef signed char int8_t;
524 typedef unsigned char uint8_t;
525 typedef signed short int16_t;
526 typedef unsigned short uint16_t;
527 typedef signed int int32_t;
528 typedef unsigned int uint32_t;
368#if __GNUC__ >= 4 529 #if __GNUC__
369# define expect(expr,value) __builtin_expect ((expr),(value)) 530 typedef signed long long int64_t;
370# define noinline __attribute__ ((noinline)) 531 typedef unsigned long long uint64_t;
532 #else /* _MSC_VER || __BORLANDC__ */
533 typedef signed __int64 int64_t;
534 typedef unsigned __int64 uint64_t;
535 #endif
536 #ifdef _WIN64
537 #define ECB_PTRSIZE 8
538 typedef uint64_t uintptr_t;
539 typedef int64_t intptr_t;
540 #else
541 #define ECB_PTRSIZE 4
542 typedef uint32_t uintptr_t;
543 typedef int32_t intptr_t;
544 #endif
371#else 545#else
372# define expect(expr,value) (expr) 546 #include <inttypes.h>
373# define noinline 547 #if UINTMAX_MAX > 0xffffffffU
374# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 548 #define ECB_PTRSIZE 8
375# define inline 549 #else
550 #define ECB_PTRSIZE 4
551 #endif
376# endif 552#endif
553
554/* work around x32 idiocy by defining proper macros */
555#if __x86_64 || _M_AMD64
556 #if _ILP32
557 #define ECB_AMD64_X32 1
558 #else
559 #define ECB_AMD64 1
377#endif 560 #endif
561#endif
378 562
563/* many compilers define _GNUC_ to some versions but then only implement
564 * what their idiot authors think are the "more important" extensions,
565 * causing enormous grief in return for some better fake benchmark numbers.
566 * or so.
567 * we try to detect these and simply assume they are not gcc - if they have
568 * an issue with that they should have done it right in the first place.
569 */
570#ifndef ECB_GCC_VERSION
571 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
572 #define ECB_GCC_VERSION(major,minor) 0
573 #else
574 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
575 #endif
576#endif
577
578#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
579#define ECB_C99 (__STDC_VERSION__ >= 199901L)
580#define ECB_C11 (__STDC_VERSION__ >= 201112L)
581#define ECB_CPP (__cplusplus+0)
582#define ECB_CPP11 (__cplusplus >= 201103L)
583
584#if ECB_CPP
585 #define ECB_EXTERN_C extern "C"
586 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
587 #define ECB_EXTERN_C_END }
588#else
589 #define ECB_EXTERN_C extern
590 #define ECB_EXTERN_C_BEG
591 #define ECB_EXTERN_C_END
592#endif
593
594/*****************************************************************************/
595
596/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
597/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
598
599#if ECB_NO_THREADS
600 #define ECB_NO_SMP 1
601#endif
602
603#if ECB_NO_SMP
604 #define ECB_MEMORY_FENCE do { } while (0)
605#endif
606
607#ifndef ECB_MEMORY_FENCE
608 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
609 #if __i386 || __i386__
610 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
611 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
612 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
613 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
614 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
615 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
616 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
617 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
618 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
619 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
620 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
622 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
623 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
624 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
625 #elif __sparc || __sparc__
626 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
627 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
629 #elif defined __s390__ || defined __s390x__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
631 #elif defined __mips__
632 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
633 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
634 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
635 #elif defined __alpha__
636 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
637 #elif defined __hppa__
638 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
639 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
640 #elif defined __ia64__
641 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
642 #elif defined __m68k__
643 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
644 #elif defined __m88k__
645 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
646 #elif defined __sh__
647 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
648 #endif
649 #endif
650#endif
651
652#ifndef ECB_MEMORY_FENCE
653 #if ECB_GCC_VERSION(4,7)
654 /* see comment below (stdatomic.h) about the C11 memory model. */
655 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
656
657 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
658 * without risking compile time errors with other compilers. We *could*
659 * define our own ecb_clang_has_feature, but I just can't be bothered to work
660 * around this shit time and again.
661 * #elif defined __clang && __has_feature (cxx_atomic)
662 * // see comment below (stdatomic.h) about the C11 memory model.
663 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
664 */
665
666 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
667 #define ECB_MEMORY_FENCE __sync_synchronize ()
668 #elif _MSC_VER >= 1400 /* VC++ 2005 */
669 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
670 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
671 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
672 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
673 #elif defined _WIN32
674 #include <WinNT.h>
675 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
676 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
677 #include <mbarrier.h>
678 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
679 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
680 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
681 #elif __xlC__
682 #define ECB_MEMORY_FENCE __sync ()
683 #endif
684#endif
685
686#ifndef ECB_MEMORY_FENCE
687 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
688 /* we assume that these memory fences work on all variables/all memory accesses, */
689 /* not just C11 atomics and atomic accesses */
690 #include <stdatomic.h>
691 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
692 /* any fence other than seq_cst, which isn't very efficient for us. */
693 /* Why that is, we don't know - either the C11 memory model is quite useless */
694 /* for most usages, or gcc and clang have a bug */
695 /* I *currently* lean towards the latter, and inefficiently implement */
696 /* all three of ecb's fences as a seq_cst fence */
697 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
698 #endif
699#endif
700
701#ifndef ECB_MEMORY_FENCE
702 #if !ECB_AVOID_PTHREADS
703 /*
704 * if you get undefined symbol references to pthread_mutex_lock,
705 * or failure to find pthread.h, then you should implement
706 * the ECB_MEMORY_FENCE operations for your cpu/compiler
707 * OR provide pthread.h and link against the posix thread library
708 * of your system.
709 */
710 #include <pthread.h>
711 #define ECB_NEEDS_PTHREADS 1
712 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
713
714 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
715 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
716 #endif
717#endif
718
719#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
720 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
721#endif
722
723#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
724 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
725#endif
726
727/*****************************************************************************/
728
729#if __cplusplus
730 #define ecb_inline static inline
731#elif ECB_GCC_VERSION(2,5)
732 #define ecb_inline static __inline__
733#elif ECB_C99
734 #define ecb_inline static inline
735#else
736 #define ecb_inline static
737#endif
738
739#if ECB_GCC_VERSION(3,3)
740 #define ecb_restrict __restrict__
741#elif ECB_C99
742 #define ecb_restrict restrict
743#else
744 #define ecb_restrict
745#endif
746
747typedef int ecb_bool;
748
749#define ECB_CONCAT_(a, b) a ## b
750#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
751#define ECB_STRINGIFY_(a) # a
752#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
753
754#define ecb_function_ ecb_inline
755
756#if ECB_GCC_VERSION(3,1)
757 #define ecb_attribute(attrlist) __attribute__(attrlist)
758 #define ecb_is_constant(expr) __builtin_constant_p (expr)
759 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
760 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
761#else
762 #define ecb_attribute(attrlist)
763 #define ecb_is_constant(expr) 0
764 #define ecb_expect(expr,value) (expr)
765 #define ecb_prefetch(addr,rw,locality)
766#endif
767
768/* no emulation for ecb_decltype */
769#if ECB_GCC_VERSION(4,5)
770 #define ecb_decltype(x) __decltype(x)
771#elif ECB_GCC_VERSION(3,0)
772 #define ecb_decltype(x) __typeof(x)
773#endif
774
775#define ecb_noinline ecb_attribute ((__noinline__))
776#define ecb_unused ecb_attribute ((__unused__))
777#define ecb_const ecb_attribute ((__const__))
778#define ecb_pure ecb_attribute ((__pure__))
779
780#if ECB_C11
781 #define ecb_noreturn _Noreturn
782#else
783 #define ecb_noreturn ecb_attribute ((__noreturn__))
784#endif
785
786#if ECB_GCC_VERSION(4,3)
787 #define ecb_artificial ecb_attribute ((__artificial__))
788 #define ecb_hot ecb_attribute ((__hot__))
789 #define ecb_cold ecb_attribute ((__cold__))
790#else
791 #define ecb_artificial
792 #define ecb_hot
793 #define ecb_cold
794#endif
795
796/* put around conditional expressions if you are very sure that the */
797/* expression is mostly true or mostly false. note that these return */
798/* booleans, not the expression. */
379#define expect_false(expr) expect ((expr) != 0, 0) 799#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 800#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
801/* for compatibility to the rest of the world */
802#define ecb_likely(expr) ecb_expect_true (expr)
803#define ecb_unlikely(expr) ecb_expect_false (expr)
804
805/* count trailing zero bits and count # of one bits */
806#if ECB_GCC_VERSION(3,4)
807 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
808 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
809 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
810 #define ecb_ctz32(x) __builtin_ctz (x)
811 #define ecb_ctz64(x) __builtin_ctzll (x)
812 #define ecb_popcount32(x) __builtin_popcount (x)
813 /* no popcountll */
814#else
815 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
816 ecb_function_ int
817 ecb_ctz32 (uint32_t x)
818 {
819 int r = 0;
820
821 x &= ~x + 1; /* this isolates the lowest bit */
822
823#if ECB_branchless_on_i386
824 r += !!(x & 0xaaaaaaaa) << 0;
825 r += !!(x & 0xcccccccc) << 1;
826 r += !!(x & 0xf0f0f0f0) << 2;
827 r += !!(x & 0xff00ff00) << 3;
828 r += !!(x & 0xffff0000) << 4;
829#else
830 if (x & 0xaaaaaaaa) r += 1;
831 if (x & 0xcccccccc) r += 2;
832 if (x & 0xf0f0f0f0) r += 4;
833 if (x & 0xff00ff00) r += 8;
834 if (x & 0xffff0000) r += 16;
835#endif
836
837 return r;
838 }
839
840 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
841 ecb_function_ int
842 ecb_ctz64 (uint64_t x)
843 {
844 int shift = x & 0xffffffffU ? 0 : 32;
845 return ecb_ctz32 (x >> shift) + shift;
846 }
847
848 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
849 ecb_function_ int
850 ecb_popcount32 (uint32_t x)
851 {
852 x -= (x >> 1) & 0x55555555;
853 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
854 x = ((x >> 4) + x) & 0x0f0f0f0f;
855 x *= 0x01010101;
856
857 return x >> 24;
858 }
859
860 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
861 ecb_function_ int ecb_ld32 (uint32_t x)
862 {
863 int r = 0;
864
865 if (x >> 16) { x >>= 16; r += 16; }
866 if (x >> 8) { x >>= 8; r += 8; }
867 if (x >> 4) { x >>= 4; r += 4; }
868 if (x >> 2) { x >>= 2; r += 2; }
869 if (x >> 1) { r += 1; }
870
871 return r;
872 }
873
874 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
875 ecb_function_ int ecb_ld64 (uint64_t x)
876 {
877 int r = 0;
878
879 if (x >> 32) { x >>= 32; r += 32; }
880
881 return r + ecb_ld32 (x);
882 }
883#endif
884
885ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
886ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
887ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
888ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
889
890ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
891ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
892{
893 return ( (x * 0x0802U & 0x22110U)
894 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
895}
896
897ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
898ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
899{
900 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
901 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
902 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
903 x = ( x >> 8 ) | ( x << 8);
904
905 return x;
906}
907
908ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
909ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
910{
911 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
912 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
913 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
914 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
915 x = ( x >> 16 ) | ( x << 16);
916
917 return x;
918}
919
920/* popcount64 is only available on 64 bit cpus as gcc builtin */
921/* so for this version we are lazy */
922ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
923ecb_function_ int
924ecb_popcount64 (uint64_t x)
925{
926 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
927}
928
929ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
930ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
931ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
932ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
933ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
934ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
935ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
936ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
937
938ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
939ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
940ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
941ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
942ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
943ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
944ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
945ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
946
947#if ECB_GCC_VERSION(4,3)
948 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
949 #define ecb_bswap32(x) __builtin_bswap32 (x)
950 #define ecb_bswap64(x) __builtin_bswap64 (x)
951#else
952 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
953 ecb_function_ uint16_t
954 ecb_bswap16 (uint16_t x)
955 {
956 return ecb_rotl16 (x, 8);
957 }
958
959 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
960 ecb_function_ uint32_t
961 ecb_bswap32 (uint32_t x)
962 {
963 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
964 }
965
966 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
967 ecb_function_ uint64_t
968 ecb_bswap64 (uint64_t x)
969 {
970 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
971 }
972#endif
973
974#if ECB_GCC_VERSION(4,5)
975 #define ecb_unreachable() __builtin_unreachable ()
976#else
977 /* this seems to work fine, but gcc always emits a warning for it :/ */
978 ecb_inline void ecb_unreachable (void) ecb_noreturn;
979 ecb_inline void ecb_unreachable (void) { }
980#endif
981
982/* try to tell the compiler that some condition is definitely true */
983#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
984
985ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
986ecb_inline unsigned char
987ecb_byteorder_helper (void)
988{
989 /* the union code still generates code under pressure in gcc, */
990 /* but less than using pointers, and always seems to */
991 /* successfully return a constant. */
992 /* the reason why we have this horrible preprocessor mess */
993 /* is to avoid it in all cases, at least on common architectures */
994 /* or when using a recent enough gcc version (>= 4.6) */
995#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
996 return 0x44;
997#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
998 return 0x44;
999#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1000 return 0x11;
1001#else
1002 union
1003 {
1004 uint32_t i;
1005 uint8_t c;
1006 } u = { 0x11223344 };
1007 return u.c;
1008#endif
1009}
1010
1011ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1012ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1013ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1014ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1015
1016#if ECB_GCC_VERSION(3,0) || ECB_C99
1017 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1018#else
1019 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1020#endif
1021
1022#if __cplusplus
1023 template<typename T>
1024 static inline T ecb_div_rd (T val, T div)
1025 {
1026 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1027 }
1028 template<typename T>
1029 static inline T ecb_div_ru (T val, T div)
1030 {
1031 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1032 }
1033#else
1034 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1035 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1036#endif
1037
1038#if ecb_cplusplus_does_not_suck
1039 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1040 template<typename T, int N>
1041 static inline int ecb_array_length (const T (&arr)[N])
1042 {
1043 return N;
1044 }
1045#else
1046 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1047#endif
1048
1049/*******************************************************************************/
1050/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1051
1052/* basically, everything uses "ieee pure-endian" floating point numbers */
1053/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1054#if 0 \
1055 || __i386 || __i386__ \
1056 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1057 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1058 || defined __arm__ && defined __ARM_EABI__ \
1059 || defined __s390__ || defined __s390x__ \
1060 || defined __mips__ \
1061 || defined __alpha__ \
1062 || defined __hppa__ \
1063 || defined __ia64__ \
1064 || defined __m68k__ \
1065 || defined __m88k__ \
1066 || defined __sh__ \
1067 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1068 #define ECB_STDFP 1
1069 #include <string.h> /* for memcpy */
1070#else
1071 #define ECB_STDFP 0
1072#endif
1073
1074#ifndef ECB_NO_LIBM
1075
1076 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1077
1078 #ifdef NEN
1079 #define ECB_NAN NAN
1080 #else
1081 #define ECB_NAN INFINITY
1082 #endif
1083
1084 /* converts an ieee half/binary16 to a float */
1085 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1086 ecb_function_ float
1087 ecb_binary16_to_float (uint16_t x)
1088 {
1089 int e = (x >> 10) & 0x1f;
1090 int m = x & 0x3ff;
1091 float r;
1092
1093 if (!e ) r = ldexpf (m , -24);
1094 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1095 else if (m ) r = ECB_NAN;
1096 else r = INFINITY;
1097
1098 return x & 0x8000 ? -r : r;
1099 }
1100
1101 /* convert a float to ieee single/binary32 */
1102 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1103 ecb_function_ uint32_t
1104 ecb_float_to_binary32 (float x)
1105 {
1106 uint32_t r;
1107
1108 #if ECB_STDFP
1109 memcpy (&r, &x, 4);
1110 #else
1111 /* slow emulation, works for anything but -0 */
1112 uint32_t m;
1113 int e;
1114
1115 if (x == 0e0f ) return 0x00000000U;
1116 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1117 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1118 if (x != x ) return 0x7fbfffffU;
1119
1120 m = frexpf (x, &e) * 0x1000000U;
1121
1122 r = m & 0x80000000U;
1123
1124 if (r)
1125 m = -m;
1126
1127 if (e <= -126)
1128 {
1129 m &= 0xffffffU;
1130 m >>= (-125 - e);
1131 e = -126;
1132 }
1133
1134 r |= (e + 126) << 23;
1135 r |= m & 0x7fffffU;
1136 #endif
1137
1138 return r;
1139 }
1140
1141 /* converts an ieee single/binary32 to a float */
1142 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1143 ecb_function_ float
1144 ecb_binary32_to_float (uint32_t x)
1145 {
1146 float r;
1147
1148 #if ECB_STDFP
1149 memcpy (&r, &x, 4);
1150 #else
1151 /* emulation, only works for normals and subnormals and +0 */
1152 int neg = x >> 31;
1153 int e = (x >> 23) & 0xffU;
1154
1155 x &= 0x7fffffU;
1156
1157 if (e)
1158 x |= 0x800000U;
1159 else
1160 e = 1;
1161
1162 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1163 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1164
1165 r = neg ? -r : r;
1166 #endif
1167
1168 return r;
1169 }
1170
1171 /* convert a double to ieee double/binary64 */
1172 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1173 ecb_function_ uint64_t
1174 ecb_double_to_binary64 (double x)
1175 {
1176 uint64_t r;
1177
1178 #if ECB_STDFP
1179 memcpy (&r, &x, 8);
1180 #else
1181 /* slow emulation, works for anything but -0 */
1182 uint64_t m;
1183 int e;
1184
1185 if (x == 0e0 ) return 0x0000000000000000U;
1186 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1187 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1188 if (x != x ) return 0X7ff7ffffffffffffU;
1189
1190 m = frexp (x, &e) * 0x20000000000000U;
1191
1192 r = m & 0x8000000000000000;;
1193
1194 if (r)
1195 m = -m;
1196
1197 if (e <= -1022)
1198 {
1199 m &= 0x1fffffffffffffU;
1200 m >>= (-1021 - e);
1201 e = -1022;
1202 }
1203
1204 r |= ((uint64_t)(e + 1022)) << 52;
1205 r |= m & 0xfffffffffffffU;
1206 #endif
1207
1208 return r;
1209 }
1210
1211 /* converts an ieee double/binary64 to a double */
1212 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1213 ecb_function_ double
1214 ecb_binary64_to_double (uint64_t x)
1215 {
1216 double r;
1217
1218 #if ECB_STDFP
1219 memcpy (&r, &x, 8);
1220 #else
1221 /* emulation, only works for normals and subnormals and +0 */
1222 int neg = x >> 63;
1223 int e = (x >> 52) & 0x7ffU;
1224
1225 x &= 0xfffffffffffffU;
1226
1227 if (e)
1228 x |= 0x10000000000000U;
1229 else
1230 e = 1;
1231
1232 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1233 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1234
1235 r = neg ? -r : r;
1236 #endif
1237
1238 return r;
1239 }
1240
1241#endif
1242
1243#endif
1244
1245/* ECB.H END */
1246
1247#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1248/* if your architecture doesn't need memory fences, e.g. because it is
1249 * single-cpu/core, or if you use libev in a project that doesn't use libev
1250 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1251 * libev, in which cases the memory fences become nops.
1252 * alternatively, you can remove this #error and link against libpthread,
1253 * which will then provide the memory fences.
1254 */
1255# error "memory fences not defined for your architecture, please report"
1256#endif
1257
1258#ifndef ECB_MEMORY_FENCE
1259# define ECB_MEMORY_FENCE do { } while (0)
1260# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1261# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1262#endif
1263
1264#define expect_false(cond) ecb_expect_false (cond)
1265#define expect_true(cond) ecb_expect_true (cond)
1266#define noinline ecb_noinline
1267
381#define inline_size static inline 1268#define inline_size ecb_inline
382 1269
383#if EV_MINIMAL 1270#if EV_FEATURE_CODE
1271# define inline_speed ecb_inline
1272#else
384# define inline_speed static noinline 1273# define inline_speed static noinline
1274#endif
1275
1276#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1277
1278#if EV_MINPRI == EV_MAXPRI
1279# define ABSPRI(w) (((W)w), 0)
385#else 1280#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) 1281# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1282#endif
391 1283
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1284#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 1285#define EMPTY2(a,b) /* used to suppress some warnings */
394 1286
395typedef ev_watcher *W; 1287typedef ev_watcher *W;
… …
399#define ev_active(w) ((W)(w))->active 1291#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 1292#define ev_at(w) ((WT)(w))->at
401 1293
402#if EV_USE_REALTIME 1294#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1295/* 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 */ 1296/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1297static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 1298#endif
407 1299
408#if EV_USE_MONOTONIC 1300#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1301static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 1302#endif
411 1303
1304#ifndef EV_FD_TO_WIN32_HANDLE
1305# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1306#endif
1307#ifndef EV_WIN32_HANDLE_TO_FD
1308# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1309#endif
1310#ifndef EV_WIN32_CLOSE_FD
1311# define EV_WIN32_CLOSE_FD(fd) close (fd)
1312#endif
1313
412#ifdef _WIN32 1314#ifdef _WIN32
413# include "ev_win32.c" 1315# include "ev_win32.c"
414#endif 1316#endif
415 1317
416/*****************************************************************************/ 1318/*****************************************************************************/
417 1319
1320/* define a suitable floor function (only used by periodics atm) */
1321
1322#if EV_USE_FLOOR
1323# include <math.h>
1324# define ev_floor(v) floor (v)
1325#else
1326
1327#include <float.h>
1328
1329/* a floor() replacement function, should be independent of ev_tstamp type */
1330static ev_tstamp noinline
1331ev_floor (ev_tstamp v)
1332{
1333 /* the choice of shift factor is not terribly important */
1334#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1335 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1336#else
1337 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1338#endif
1339
1340 /* argument too large for an unsigned long? */
1341 if (expect_false (v >= shift))
1342 {
1343 ev_tstamp f;
1344
1345 if (v == v - 1.)
1346 return v; /* very large number */
1347
1348 f = shift * ev_floor (v * (1. / shift));
1349 return f + ev_floor (v - f);
1350 }
1351
1352 /* special treatment for negative args? */
1353 if (expect_false (v < 0.))
1354 {
1355 ev_tstamp f = -ev_floor (-v);
1356
1357 return f - (f == v ? 0 : 1);
1358 }
1359
1360 /* fits into an unsigned long */
1361 return (unsigned long)v;
1362}
1363
1364#endif
1365
1366/*****************************************************************************/
1367
1368#ifdef __linux
1369# include <sys/utsname.h>
1370#endif
1371
1372static unsigned int noinline ecb_cold
1373ev_linux_version (void)
1374{
1375#ifdef __linux
1376 unsigned int v = 0;
1377 struct utsname buf;
1378 int i;
1379 char *p = buf.release;
1380
1381 if (uname (&buf))
1382 return 0;
1383
1384 for (i = 3+1; --i; )
1385 {
1386 unsigned int c = 0;
1387
1388 for (;;)
1389 {
1390 if (*p >= '0' && *p <= '9')
1391 c = c * 10 + *p++ - '0';
1392 else
1393 {
1394 p += *p == '.';
1395 break;
1396 }
1397 }
1398
1399 v = (v << 8) | c;
1400 }
1401
1402 return v;
1403#else
1404 return 0;
1405#endif
1406}
1407
1408/*****************************************************************************/
1409
1410#if EV_AVOID_STDIO
1411static void noinline ecb_cold
1412ev_printerr (const char *msg)
1413{
1414 write (STDERR_FILENO, msg, strlen (msg));
1415}
1416#endif
1417
418static void (*syserr_cb)(const char *msg); 1418static void (*syserr_cb)(const char *msg) EV_THROW;
419 1419
420void 1420void ecb_cold
421ev_set_syserr_cb (void (*cb)(const char *msg)) 1421ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
422{ 1422{
423 syserr_cb = cb; 1423 syserr_cb = cb;
424} 1424}
425 1425
426static void noinline 1426static void noinline ecb_cold
427ev_syserr (const char *msg) 1427ev_syserr (const char *msg)
428{ 1428{
429 if (!msg) 1429 if (!msg)
430 msg = "(libev) system error"; 1430 msg = "(libev) system error";
431 1431
432 if (syserr_cb) 1432 if (syserr_cb)
433 syserr_cb (msg); 1433 syserr_cb (msg);
434 else 1434 else
435 { 1435 {
1436#if EV_AVOID_STDIO
1437 ev_printerr (msg);
1438 ev_printerr (": ");
1439 ev_printerr (strerror (errno));
1440 ev_printerr ("\n");
1441#else
436 perror (msg); 1442 perror (msg);
1443#endif
437 abort (); 1444 abort ();
438 } 1445 }
439} 1446}
440 1447
441static void * 1448static void *
442ev_realloc_emul (void *ptr, long size) 1449ev_realloc_emul (void *ptr, long size) EV_THROW
443{ 1450{
444 /* some systems, notably openbsd and darwin, fail to properly 1451 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 1452 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 1453 * the single unix specification, so work around them here.
1454 * recently, also (at least) fedora and debian started breaking it,
1455 * despite documenting it otherwise.
447 */ 1456 */
448 1457
449 if (size) 1458 if (size)
450 return realloc (ptr, size); 1459 return realloc (ptr, size);
451 1460
452 free (ptr); 1461 free (ptr);
453 return 0; 1462 return 0;
454} 1463}
455 1464
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1465static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
457 1466
458void 1467void ecb_cold
459ev_set_allocator (void *(*cb)(void *ptr, long size)) 1468ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
460{ 1469{
461 alloc = cb; 1470 alloc = cb;
462} 1471}
463 1472
464inline_speed void * 1473inline_speed void *
… …
466{ 1475{
467 ptr = alloc (ptr, size); 1476 ptr = alloc (ptr, size);
468 1477
469 if (!ptr && size) 1478 if (!ptr && size)
470 { 1479 {
1480#if EV_AVOID_STDIO
1481 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1482#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1483 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1484#endif
472 abort (); 1485 abort ();
473 } 1486 }
474 1487
475 return ptr; 1488 return ptr;
476} 1489}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 1491#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 1492#define ev_free(ptr) ev_realloc ((ptr), 0)
480 1493
481/*****************************************************************************/ 1494/*****************************************************************************/
482 1495
1496/* set in reify when reification needed */
1497#define EV_ANFD_REIFY 1
1498
483/* file descriptor info structure */ 1499/* file descriptor info structure */
484typedef struct 1500typedef struct
485{ 1501{
486 WL head; 1502 WL head;
487 unsigned char events; /* the events watched for */ 1503 unsigned char events; /* the events watched for */
488 unsigned char reify; /* flag set when this ANFD needs reification */ 1504 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 */ 1505 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
490 unsigned char unused; 1506 unsigned char unused;
491#if EV_USE_EPOLL 1507#if EV_USE_EPOLL
492 unsigned int egen; /* generation counter to counter epoll bugs */ 1508 unsigned int egen; /* generation counter to counter epoll bugs */
493#endif 1509#endif
494#if EV_SELECT_IS_WINSOCKET 1510#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
495 SOCKET handle; 1511 SOCKET handle;
1512#endif
1513#if EV_USE_IOCP
1514 OVERLAPPED or, ow;
496#endif 1515#endif
497} ANFD; 1516} ANFD;
498 1517
499/* stores the pending event set for a given watcher */ 1518/* stores the pending event set for a given watcher */
500typedef struct 1519typedef struct
… …
542 #undef VAR 1561 #undef VAR
543 }; 1562 };
544 #include "ev_wrap.h" 1563 #include "ev_wrap.h"
545 1564
546 static struct ev_loop default_loop_struct; 1565 static struct ev_loop default_loop_struct;
547 struct ev_loop *ev_default_loop_ptr; 1566 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
548 1567
549#else 1568#else
550 1569
551 ev_tstamp ev_rt_now; 1570 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
552 #define VAR(name,decl) static decl; 1571 #define VAR(name,decl) static decl;
553 #include "ev_vars.h" 1572 #include "ev_vars.h"
554 #undef VAR 1573 #undef VAR
555 1574
556 static int ev_default_loop_ptr; 1575 static int ev_default_loop_ptr;
557 1576
558#endif 1577#endif
559 1578
1579#if EV_FEATURE_API
1580# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1581# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1582# define EV_INVOKE_PENDING invoke_cb (EV_A)
1583#else
1584# define EV_RELEASE_CB (void)0
1585# define EV_ACQUIRE_CB (void)0
1586# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1587#endif
1588
1589#define EVBREAK_RECURSE 0x80
1590
560/*****************************************************************************/ 1591/*****************************************************************************/
561 1592
1593#ifndef EV_HAVE_EV_TIME
562ev_tstamp 1594ev_tstamp
563ev_time (void) 1595ev_time (void) EV_THROW
564{ 1596{
565#if EV_USE_REALTIME 1597#if EV_USE_REALTIME
566 if (expect_true (have_realtime)) 1598 if (expect_true (have_realtime))
567 { 1599 {
568 struct timespec ts; 1600 struct timespec ts;
… …
573 1605
574 struct timeval tv; 1606 struct timeval tv;
575 gettimeofday (&tv, 0); 1607 gettimeofday (&tv, 0);
576 return tv.tv_sec + tv.tv_usec * 1e-6; 1608 return tv.tv_sec + tv.tv_usec * 1e-6;
577} 1609}
1610#endif
578 1611
579inline_size ev_tstamp 1612inline_size ev_tstamp
580get_clock (void) 1613get_clock (void)
581{ 1614{
582#if EV_USE_MONOTONIC 1615#if EV_USE_MONOTONIC
… …
591 return ev_time (); 1624 return ev_time ();
592} 1625}
593 1626
594#if EV_MULTIPLICITY 1627#if EV_MULTIPLICITY
595ev_tstamp 1628ev_tstamp
596ev_now (EV_P) 1629ev_now (EV_P) EV_THROW
597{ 1630{
598 return ev_rt_now; 1631 return ev_rt_now;
599} 1632}
600#endif 1633#endif
601 1634
602void 1635void
603ev_sleep (ev_tstamp delay) 1636ev_sleep (ev_tstamp delay) EV_THROW
604{ 1637{
605 if (delay > 0.) 1638 if (delay > 0.)
606 { 1639 {
607#if EV_USE_NANOSLEEP 1640#if EV_USE_NANOSLEEP
608 struct timespec ts; 1641 struct timespec ts;
609 1642
610 ts.tv_sec = (time_t)delay; 1643 EV_TS_SET (ts, delay);
611 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
612
613 nanosleep (&ts, 0); 1644 nanosleep (&ts, 0);
614#elif defined(_WIN32) 1645#elif defined _WIN32
615 Sleep ((unsigned long)(delay * 1e3)); 1646 Sleep ((unsigned long)(delay * 1e3));
616#else 1647#else
617 struct timeval tv; 1648 struct timeval tv;
618 1649
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 */ 1650 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
623 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1651 /* something not guaranteed by newer posix versions, but guaranteed */
624 /* by older ones */ 1652 /* by older ones */
1653 EV_TV_SET (tv, delay);
625 select (0, 0, 0, 0, &tv); 1654 select (0, 0, 0, 0, &tv);
626#endif 1655#endif
627 } 1656 }
628} 1657}
629 1658
630/*****************************************************************************/ 1659/*****************************************************************************/
631 1660
632#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1661#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
633 1662
634/* find a suitable new size for the given array, */ 1663/* find a suitable new size for the given array, */
635/* hopefully by rounding to a ncie-to-malloc size */ 1664/* hopefully by rounding to a nice-to-malloc size */
636inline_size int 1665inline_size int
637array_nextsize (int elem, int cur, int cnt) 1666array_nextsize (int elem, int cur, int cnt)
638{ 1667{
639 int ncur = cur + 1; 1668 int ncur = cur + 1;
640 1669
641 do 1670 do
642 ncur <<= 1; 1671 ncur <<= 1;
643 while (cnt > ncur); 1672 while (cnt > ncur);
644 1673
645 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1674 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
646 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1675 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
647 { 1676 {
648 ncur *= elem; 1677 ncur *= elem;
649 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1678 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
650 ncur = ncur - sizeof (void *) * 4; 1679 ncur = ncur - sizeof (void *) * 4;
… …
652 } 1681 }
653 1682
654 return ncur; 1683 return ncur;
655} 1684}
656 1685
657static noinline void * 1686static void * noinline ecb_cold
658array_realloc (int elem, void *base, int *cur, int cnt) 1687array_realloc (int elem, void *base, int *cur, int cnt)
659{ 1688{
660 *cur = array_nextsize (elem, *cur, cnt); 1689 *cur = array_nextsize (elem, *cur, cnt);
661 return ev_realloc (base, elem * *cur); 1690 return ev_realloc (base, elem * *cur);
662} 1691}
… …
665 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1694 memset ((void *)(base), 0, sizeof (*(base)) * (count))
666 1695
667#define array_needsize(type,base,cur,cnt,init) \ 1696#define array_needsize(type,base,cur,cnt,init) \
668 if (expect_false ((cnt) > (cur))) \ 1697 if (expect_false ((cnt) > (cur))) \
669 { \ 1698 { \
670 int ocur_ = (cur); \ 1699 int ecb_unused ocur_ = (cur); \
671 (base) = (type *)array_realloc \ 1700 (base) = (type *)array_realloc \
672 (sizeof (type), (base), &(cur), (cnt)); \ 1701 (sizeof (type), (base), &(cur), (cnt)); \
673 init ((base) + (ocur_), (cur) - ocur_); \ 1702 init ((base) + (ocur_), (cur) - ocur_); \
674 } 1703 }
675 1704
… …
693pendingcb (EV_P_ ev_prepare *w, int revents) 1722pendingcb (EV_P_ ev_prepare *w, int revents)
694{ 1723{
695} 1724}
696 1725
697void noinline 1726void noinline
698ev_feed_event (EV_P_ void *w, int revents) 1727ev_feed_event (EV_P_ void *w, int revents) EV_THROW
699{ 1728{
700 W w_ = (W)w; 1729 W w_ = (W)w;
701 int pri = ABSPRI (w_); 1730 int pri = ABSPRI (w_);
702 1731
703 if (expect_false (w_->pending)) 1732 if (expect_false (w_->pending))
… …
707 w_->pending = ++pendingcnt [pri]; 1736 w_->pending = ++pendingcnt [pri];
708 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1737 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
709 pendings [pri][w_->pending - 1].w = w_; 1738 pendings [pri][w_->pending - 1].w = w_;
710 pendings [pri][w_->pending - 1].events = revents; 1739 pendings [pri][w_->pending - 1].events = revents;
711 } 1740 }
1741
1742 pendingpri = NUMPRI - 1;
712} 1743}
713 1744
714inline_speed void 1745inline_speed void
715feed_reverse (EV_P_ W w) 1746feed_reverse (EV_P_ W w)
716{ 1747{
… …
736} 1767}
737 1768
738/*****************************************************************************/ 1769/*****************************************************************************/
739 1770
740inline_speed void 1771inline_speed void
741fd_event (EV_P_ int fd, int revents) 1772fd_event_nocheck (EV_P_ int fd, int revents)
742{ 1773{
743 ANFD *anfd = anfds + fd; 1774 ANFD *anfd = anfds + fd;
744 ev_io *w; 1775 ev_io *w;
745 1776
746 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1777 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
750 if (ev) 1781 if (ev)
751 ev_feed_event (EV_A_ (W)w, ev); 1782 ev_feed_event (EV_A_ (W)w, ev);
752 } 1783 }
753} 1784}
754 1785
1786/* do not submit kernel events for fds that have reify set */
1787/* because that means they changed while we were polling for new events */
1788inline_speed void
1789fd_event (EV_P_ int fd, int revents)
1790{
1791 ANFD *anfd = anfds + fd;
1792
1793 if (expect_true (!anfd->reify))
1794 fd_event_nocheck (EV_A_ fd, revents);
1795}
1796
755void 1797void
756ev_feed_fd_event (EV_P_ int fd, int revents) 1798ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
757{ 1799{
758 if (fd >= 0 && fd < anfdmax) 1800 if (fd >= 0 && fd < anfdmax)
759 fd_event (EV_A_ fd, revents); 1801 fd_event_nocheck (EV_A_ fd, revents);
760} 1802}
761 1803
762/* make sure the external fd watch events are in-sync */ 1804/* make sure the external fd watch events are in-sync */
763/* with the kernel/libev internal state */ 1805/* with the kernel/libev internal state */
764inline_size void 1806inline_size void
765fd_reify (EV_P) 1807fd_reify (EV_P)
766{ 1808{
767 int i; 1809 int i;
768 1810
1811#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1812 for (i = 0; i < fdchangecnt; ++i)
1813 {
1814 int fd = fdchanges [i];
1815 ANFD *anfd = anfds + fd;
1816
1817 if (anfd->reify & EV__IOFDSET && anfd->head)
1818 {
1819 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1820
1821 if (handle != anfd->handle)
1822 {
1823 unsigned long arg;
1824
1825 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1826
1827 /* handle changed, but fd didn't - we need to do it in two steps */
1828 backend_modify (EV_A_ fd, anfd->events, 0);
1829 anfd->events = 0;
1830 anfd->handle = handle;
1831 }
1832 }
1833 }
1834#endif
1835
769 for (i = 0; i < fdchangecnt; ++i) 1836 for (i = 0; i < fdchangecnt; ++i)
770 { 1837 {
771 int fd = fdchanges [i]; 1838 int fd = fdchanges [i];
772 ANFD *anfd = anfds + fd; 1839 ANFD *anfd = anfds + fd;
773 ev_io *w; 1840 ev_io *w;
774 1841
775 unsigned char events = 0; 1842 unsigned char o_events = anfd->events;
1843 unsigned char o_reify = anfd->reify;
776 1844
777 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1845 anfd->reify = 0;
778 events |= (unsigned char)w->events;
779 1846
780#if EV_SELECT_IS_WINSOCKET 1847 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
781 if (events)
782 { 1848 {
783 unsigned long arg; 1849 anfd->events = 0;
784 #ifdef EV_FD_TO_WIN32_HANDLE 1850
785 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1851 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
786 #else 1852 anfd->events |= (unsigned char)w->events;
787 anfd->handle = _get_osfhandle (fd); 1853
788 #endif 1854 if (o_events != anfd->events)
789 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1855 o_reify = EV__IOFDSET; /* actually |= */
790 } 1856 }
791#endif
792 1857
793 { 1858 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); 1859 backend_modify (EV_A_ fd, o_events, anfd->events);
802 }
803 } 1860 }
804 1861
805 fdchangecnt = 0; 1862 fdchangecnt = 0;
806} 1863}
807 1864
… …
819 fdchanges [fdchangecnt - 1] = fd; 1876 fdchanges [fdchangecnt - 1] = fd;
820 } 1877 }
821} 1878}
822 1879
823/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1880/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
824inline_speed void 1881inline_speed void ecb_cold
825fd_kill (EV_P_ int fd) 1882fd_kill (EV_P_ int fd)
826{ 1883{
827 ev_io *w; 1884 ev_io *w;
828 1885
829 while ((w = (ev_io *)anfds [fd].head)) 1886 while ((w = (ev_io *)anfds [fd].head))
… …
831 ev_io_stop (EV_A_ w); 1888 ev_io_stop (EV_A_ w);
832 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1889 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
833 } 1890 }
834} 1891}
835 1892
836/* check whether the given fd is atcually valid, for error recovery */ 1893/* check whether the given fd is actually valid, for error recovery */
837inline_size int 1894inline_size int ecb_cold
838fd_valid (int fd) 1895fd_valid (int fd)
839{ 1896{
840#ifdef _WIN32 1897#ifdef _WIN32
841 return _get_osfhandle (fd) != -1; 1898 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
842#else 1899#else
843 return fcntl (fd, F_GETFD) != -1; 1900 return fcntl (fd, F_GETFD) != -1;
844#endif 1901#endif
845} 1902}
846 1903
847/* called on EBADF to verify fds */ 1904/* called on EBADF to verify fds */
848static void noinline 1905static void noinline ecb_cold
849fd_ebadf (EV_P) 1906fd_ebadf (EV_P)
850{ 1907{
851 int fd; 1908 int fd;
852 1909
853 for (fd = 0; fd < anfdmax; ++fd) 1910 for (fd = 0; fd < anfdmax; ++fd)
… …
855 if (!fd_valid (fd) && errno == EBADF) 1912 if (!fd_valid (fd) && errno == EBADF)
856 fd_kill (EV_A_ fd); 1913 fd_kill (EV_A_ fd);
857} 1914}
858 1915
859/* called on ENOMEM in select/poll to kill some fds and retry */ 1916/* called on ENOMEM in select/poll to kill some fds and retry */
860static void noinline 1917static void noinline ecb_cold
861fd_enomem (EV_P) 1918fd_enomem (EV_P)
862{ 1919{
863 int fd; 1920 int fd;
864 1921
865 for (fd = anfdmax; fd--; ) 1922 for (fd = anfdmax; fd--; )
866 if (anfds [fd].events) 1923 if (anfds [fd].events)
867 { 1924 {
868 fd_kill (EV_A_ fd); 1925 fd_kill (EV_A_ fd);
869 return; 1926 break;
870 } 1927 }
871} 1928}
872 1929
873/* usually called after fork if backend needs to re-arm all fds from scratch */ 1930/* usually called after fork if backend needs to re-arm all fds from scratch */
874static void noinline 1931static void noinline
… …
879 for (fd = 0; fd < anfdmax; ++fd) 1936 for (fd = 0; fd < anfdmax; ++fd)
880 if (anfds [fd].events) 1937 if (anfds [fd].events)
881 { 1938 {
882 anfds [fd].events = 0; 1939 anfds [fd].events = 0;
883 anfds [fd].emask = 0; 1940 anfds [fd].emask = 0;
884 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1941 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
885 } 1942 }
886} 1943}
887 1944
1945/* used to prepare libev internal fd's */
1946/* this is not fork-safe */
1947inline_speed void
1948fd_intern (int fd)
1949{
1950#ifdef _WIN32
1951 unsigned long arg = 1;
1952 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1953#else
1954 fcntl (fd, F_SETFD, FD_CLOEXEC);
1955 fcntl (fd, F_SETFL, O_NONBLOCK);
1956#endif
1957}
1958
888/*****************************************************************************/ 1959/*****************************************************************************/
889 1960
890/* 1961/*
891 * the heap functions want a real array index. array index 0 uis guaranteed to not 1962 * 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 1963 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
893 * the branching factor of the d-tree. 1964 * the branching factor of the d-tree.
894 */ 1965 */
895 1966
896/* 1967/*
… …
964 2035
965 for (;;) 2036 for (;;)
966 { 2037 {
967 int c = k << 1; 2038 int c = k << 1;
968 2039
969 if (c > N + HEAP0 - 1) 2040 if (c >= N + HEAP0)
970 break; 2041 break;
971 2042
972 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2043 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
973 ? 1 : 0; 2044 ? 1 : 0;
974 2045
… …
1010 2081
1011/* move an element suitably so it is in a correct place */ 2082/* move an element suitably so it is in a correct place */
1012inline_size void 2083inline_size void
1013adjustheap (ANHE *heap, int N, int k) 2084adjustheap (ANHE *heap, int N, int k)
1014{ 2085{
1015 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2086 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1016 upheap (heap, k); 2087 upheap (heap, k);
1017 else 2088 else
1018 downheap (heap, N, k); 2089 downheap (heap, N, k);
1019} 2090}
1020 2091
… …
1033/*****************************************************************************/ 2104/*****************************************************************************/
1034 2105
1035/* associate signal watchers to a signal signal */ 2106/* associate signal watchers to a signal signal */
1036typedef struct 2107typedef struct
1037{ 2108{
2109 EV_ATOMIC_T pending;
2110#if EV_MULTIPLICITY
2111 EV_P;
2112#endif
1038 WL head; 2113 WL head;
1039 EV_ATOMIC_T gotsig;
1040} ANSIG; 2114} ANSIG;
1041 2115
1042static ANSIG *signals; 2116static ANSIG signals [EV_NSIG - 1];
1043static int signalmax;
1044
1045static EV_ATOMIC_T gotsig;
1046 2117
1047/*****************************************************************************/ 2118/*****************************************************************************/
1048 2119
1049/* used to prepare libev internal fd's */ 2120#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1050/* this is not fork-safe */ 2121
2122static void noinline ecb_cold
2123evpipe_init (EV_P)
2124{
2125 if (!ev_is_active (&pipe_w))
2126 {
2127 int fds [2];
2128
2129# if EV_USE_EVENTFD
2130 fds [0] = -1;
2131 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2132 if (fds [1] < 0 && errno == EINVAL)
2133 fds [1] = eventfd (0, 0);
2134
2135 if (fds [1] < 0)
2136# endif
2137 {
2138 while (pipe (fds))
2139 ev_syserr ("(libev) error creating signal/async pipe");
2140
2141 fd_intern (fds [0]);
2142 }
2143
2144 evpipe [0] = fds [0];
2145
2146 if (evpipe [1] < 0)
2147 evpipe [1] = fds [1]; /* first call, set write fd */
2148 else
2149 {
2150 /* on subsequent calls, do not change evpipe [1] */
2151 /* so that evpipe_write can always rely on its value. */
2152 /* this branch does not do anything sensible on windows, */
2153 /* so must not be executed on windows */
2154
2155 dup2 (fds [1], evpipe [1]);
2156 close (fds [1]);
2157 }
2158
2159 fd_intern (evpipe [1]);
2160
2161 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2162 ev_io_start (EV_A_ &pipe_w);
2163 ev_unref (EV_A); /* watcher should not keep loop alive */
2164 }
2165}
2166
1051inline_speed void 2167inline_speed void
1052fd_intern (int fd) 2168evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1053{ 2169{
1054#ifdef _WIN32 2170 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
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 2171
1063static void noinline 2172 if (expect_true (*flag))
1064evpipe_init (EV_P) 2173 return;
1065{ 2174
1066 if (!ev_is_active (&pipe_w)) 2175 *flag = 1;
2176 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2177
2178 pipe_write_skipped = 1;
2179
2180 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2181
2182 if (pipe_write_wanted)
1067 { 2183 {
2184 int old_errno;
2185
2186 pipe_write_skipped = 0;
2187 ECB_MEMORY_FENCE_RELEASE;
2188
2189 old_errno = errno; /* save errno because write will clobber it */
2190
1068#if EV_USE_EVENTFD 2191#if EV_USE_EVENTFD
1069 if ((evfd = eventfd (0, 0)) >= 0) 2192 if (evpipe [0] < 0)
1070 { 2193 {
1071 evpipe [0] = -1; 2194 uint64_t counter = 1;
1072 fd_intern (evfd); 2195 write (evpipe [1], &counter, sizeof (uint64_t));
1073 ev_io_set (&pipe_w, evfd, EV_READ);
1074 } 2196 }
1075 else 2197 else
1076#endif 2198#endif
1077 { 2199 {
1078 while (pipe (evpipe)) 2200#ifdef _WIN32
1079 ev_syserr ("(libev) error creating signal/async pipe"); 2201 WSABUF buf;
1080 2202 DWORD sent;
1081 fd_intern (evpipe [0]); 2203 buf.buf = &buf;
1082 fd_intern (evpipe [1]); 2204 buf.len = 1;
1083 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2205 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2206#else
2207 write (evpipe [1], &(evpipe [1]), 1);
2208#endif
1084 } 2209 }
1085
1086 ev_io_start (EV_A_ &pipe_w);
1087 ev_unref (EV_A); /* watcher should not keep loop alive */
1088 }
1089}
1090
1091inline_size void
1092evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1093{
1094 if (!*flag)
1095 {
1096 int old_errno = errno; /* save errno because write might clobber it */
1097
1098 *flag = 1;
1099
1100#if EV_USE_EVENTFD
1101 if (evfd >= 0)
1102 {
1103 uint64_t counter = 1;
1104 write (evfd, &counter, sizeof (uint64_t));
1105 }
1106 else
1107#endif
1108 write (evpipe [1], &old_errno, 1);
1109 2210
1110 errno = old_errno; 2211 errno = old_errno;
1111 } 2212 }
1112} 2213}
1113 2214
1114/* called whenever the libev signal pipe */ 2215/* called whenever the libev signal pipe */
1115/* got some events (signal, async) */ 2216/* got some events (signal, async) */
1116static void 2217static void
1117pipecb (EV_P_ ev_io *iow, int revents) 2218pipecb (EV_P_ ev_io *iow, int revents)
1118{ 2219{
2220 int i;
2221
2222 if (revents & EV_READ)
2223 {
1119#if EV_USE_EVENTFD 2224#if EV_USE_EVENTFD
1120 if (evfd >= 0) 2225 if (evpipe [0] < 0)
1121 { 2226 {
1122 uint64_t counter; 2227 uint64_t counter;
1123 read (evfd, &counter, sizeof (uint64_t)); 2228 read (evpipe [1], &counter, sizeof (uint64_t));
1124 } 2229 }
1125 else 2230 else
1126#endif 2231#endif
1127 { 2232 {
1128 char dummy; 2233 char dummy[4];
2234#ifdef _WIN32
2235 WSABUF buf;
2236 DWORD recvd;
2237 DWORD flags = 0;
2238 buf.buf = dummy;
2239 buf.len = sizeof (dummy);
2240 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2241#else
1129 read (evpipe [0], &dummy, 1); 2242 read (evpipe [0], &dummy, sizeof (dummy));
2243#endif
2244 }
2245 }
2246
2247 pipe_write_skipped = 0;
2248
2249 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2250
2251#if EV_SIGNAL_ENABLE
2252 if (sig_pending)
1130 } 2253 {
2254 sig_pending = 0;
1131 2255
1132 if (gotsig && ev_is_default_loop (EV_A)) 2256 ECB_MEMORY_FENCE;
1133 {
1134 int signum;
1135 gotsig = 0;
1136 2257
1137 for (signum = signalmax; signum--; ) 2258 for (i = EV_NSIG - 1; i--; )
1138 if (signals [signum].gotsig) 2259 if (expect_false (signals [i].pending))
1139 ev_feed_signal_event (EV_A_ signum + 1); 2260 ev_feed_signal_event (EV_A_ i + 1);
1140 } 2261 }
2262#endif
1141 2263
1142#if EV_ASYNC_ENABLE 2264#if EV_ASYNC_ENABLE
1143 if (gotasync) 2265 if (async_pending)
1144 { 2266 {
1145 int i; 2267 async_pending = 0;
1146 gotasync = 0; 2268
2269 ECB_MEMORY_FENCE;
1147 2270
1148 for (i = asynccnt; i--; ) 2271 for (i = asynccnt; i--; )
1149 if (asyncs [i]->sent) 2272 if (asyncs [i]->sent)
1150 { 2273 {
1151 asyncs [i]->sent = 0; 2274 asyncs [i]->sent = 0;
2275 ECB_MEMORY_FENCE_RELEASE;
1152 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2276 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1153 } 2277 }
1154 } 2278 }
1155#endif 2279#endif
1156} 2280}
1157 2281
1158/*****************************************************************************/ 2282/*****************************************************************************/
1159 2283
2284void
2285ev_feed_signal (int signum) EV_THROW
2286{
2287#if EV_MULTIPLICITY
2288 EV_P;
2289 ECB_MEMORY_FENCE_ACQUIRE;
2290 EV_A = signals [signum - 1].loop;
2291
2292 if (!EV_A)
2293 return;
2294#endif
2295
2296 signals [signum - 1].pending = 1;
2297 evpipe_write (EV_A_ &sig_pending);
2298}
2299
1160static void 2300static void
1161ev_sighandler (int signum) 2301ev_sighandler (int signum)
1162{ 2302{
2303#ifdef _WIN32
2304 signal (signum, ev_sighandler);
2305#endif
2306
2307 ev_feed_signal (signum);
2308}
2309
2310void noinline
2311ev_feed_signal_event (EV_P_ int signum) EV_THROW
2312{
2313 WL w;
2314
2315 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2316 return;
2317
2318 --signum;
2319
1163#if EV_MULTIPLICITY 2320#if EV_MULTIPLICITY
1164 struct ev_loop *loop = &default_loop_struct; 2321 /* it is permissible to try to feed a signal to the wrong loop */
1165#endif 2322 /* or, likely more useful, feeding a signal nobody is waiting for */
1166 2323
1167#if _WIN32 2324 if (expect_false (signals [signum].loop != EV_A))
1168 signal (signum, ev_sighandler);
1169#endif
1170
1171 signals [signum - 1].gotsig = 1;
1172 evpipe_write (EV_A_ &gotsig);
1173}
1174
1175void noinline
1176ev_feed_signal_event (EV_P_ int signum)
1177{
1178 WL w;
1179
1180#if EV_MULTIPLICITY
1181 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1182#endif
1183
1184 --signum;
1185
1186 if (signum < 0 || signum >= signalmax)
1187 return; 2325 return;
2326#endif
1188 2327
1189 signals [signum].gotsig = 0; 2328 signals [signum].pending = 0;
2329 ECB_MEMORY_FENCE_RELEASE;
1190 2330
1191 for (w = signals [signum].head; w; w = w->next) 2331 for (w = signals [signum].head; w; w = w->next)
1192 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2332 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1193} 2333}
1194 2334
2335#if EV_USE_SIGNALFD
2336static void
2337sigfdcb (EV_P_ ev_io *iow, int revents)
2338{
2339 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2340
2341 for (;;)
2342 {
2343 ssize_t res = read (sigfd, si, sizeof (si));
2344
2345 /* not ISO-C, as res might be -1, but works with SuS */
2346 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2347 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2348
2349 if (res < (ssize_t)sizeof (si))
2350 break;
2351 }
2352}
2353#endif
2354
2355#endif
2356
1195/*****************************************************************************/ 2357/*****************************************************************************/
1196 2358
2359#if EV_CHILD_ENABLE
1197static WL childs [EV_PID_HASHSIZE]; 2360static WL childs [EV_PID_HASHSIZE];
1198
1199#ifndef _WIN32
1200 2361
1201static ev_signal childev; 2362static ev_signal childev;
1202 2363
1203#ifndef WIFCONTINUED 2364#ifndef WIFCONTINUED
1204# define WIFCONTINUED(status) 0 2365# define WIFCONTINUED(status) 0
… …
1209child_reap (EV_P_ int chain, int pid, int status) 2370child_reap (EV_P_ int chain, int pid, int status)
1210{ 2371{
1211 ev_child *w; 2372 ev_child *w;
1212 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2373 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1213 2374
1214 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2375 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1215 { 2376 {
1216 if ((w->pid == pid || !w->pid) 2377 if ((w->pid == pid || !w->pid)
1217 && (!traced || (w->flags & 1))) 2378 && (!traced || (w->flags & 1)))
1218 { 2379 {
1219 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2380 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 */ 2405 /* 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 */ 2406 /* 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); 2407 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1247 2408
1248 child_reap (EV_A_ pid, pid, status); 2409 child_reap (EV_A_ pid, pid, status);
1249 if (EV_PID_HASHSIZE > 1) 2410 if ((EV_PID_HASHSIZE) > 1)
1250 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2411 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1251} 2412}
1252 2413
1253#endif 2414#endif
1254 2415
1255/*****************************************************************************/ 2416/*****************************************************************************/
1256 2417
2418#if EV_USE_IOCP
2419# include "ev_iocp.c"
2420#endif
1257#if EV_USE_PORT 2421#if EV_USE_PORT
1258# include "ev_port.c" 2422# include "ev_port.c"
1259#endif 2423#endif
1260#if EV_USE_KQUEUE 2424#if EV_USE_KQUEUE
1261# include "ev_kqueue.c" 2425# include "ev_kqueue.c"
… …
1268#endif 2432#endif
1269#if EV_USE_SELECT 2433#if EV_USE_SELECT
1270# include "ev_select.c" 2434# include "ev_select.c"
1271#endif 2435#endif
1272 2436
1273int 2437int ecb_cold
1274ev_version_major (void) 2438ev_version_major (void) EV_THROW
1275{ 2439{
1276 return EV_VERSION_MAJOR; 2440 return EV_VERSION_MAJOR;
1277} 2441}
1278 2442
1279int 2443int ecb_cold
1280ev_version_minor (void) 2444ev_version_minor (void) EV_THROW
1281{ 2445{
1282 return EV_VERSION_MINOR; 2446 return EV_VERSION_MINOR;
1283} 2447}
1284 2448
1285/* return true if we are running with elevated privileges and should ignore env variables */ 2449/* return true if we are running with elevated privileges and should ignore env variables */
1286int inline_size 2450int inline_size ecb_cold
1287enable_secure (void) 2451enable_secure (void)
1288{ 2452{
1289#ifdef _WIN32 2453#ifdef _WIN32
1290 return 0; 2454 return 0;
1291#else 2455#else
1292 return getuid () != geteuid () 2456 return getuid () != geteuid ()
1293 || getgid () != getegid (); 2457 || getgid () != getegid ();
1294#endif 2458#endif
1295} 2459}
1296 2460
1297unsigned int 2461unsigned int ecb_cold
1298ev_supported_backends (void) 2462ev_supported_backends (void) EV_THROW
1299{ 2463{
1300 unsigned int flags = 0; 2464 unsigned int flags = 0;
1301 2465
1302 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2466 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1303 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2467 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1306 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2470 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1307 2471
1308 return flags; 2472 return flags;
1309} 2473}
1310 2474
1311unsigned int 2475unsigned int ecb_cold
1312ev_recommended_backends (void) 2476ev_recommended_backends (void) EV_THROW
1313{ 2477{
1314 unsigned int flags = ev_supported_backends (); 2478 unsigned int flags = ev_supported_backends ();
1315 2479
1316#ifndef __NetBSD__ 2480#ifndef __NetBSD__
1317 /* kqueue is borked on everything but netbsd apparently */ 2481 /* kqueue is borked on everything but netbsd apparently */
… …
1321#ifdef __APPLE__ 2485#ifdef __APPLE__
1322 /* only select works correctly on that "unix-certified" platform */ 2486 /* only select works correctly on that "unix-certified" platform */
1323 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2487 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1324 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2488 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1325#endif 2489#endif
2490#ifdef __FreeBSD__
2491 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2492#endif
1326 2493
1327 return flags; 2494 return flags;
1328} 2495}
1329 2496
2497unsigned int ecb_cold
2498ev_embeddable_backends (void) EV_THROW
2499{
2500 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2501
2502 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2503 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2504 flags &= ~EVBACKEND_EPOLL;
2505
2506 return flags;
2507}
2508
1330unsigned int 2509unsigned int
1331ev_embeddable_backends (void) 2510ev_backend (EV_P) EV_THROW
1332{ 2511{
1333 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2512 return backend;
1334
1335 /* 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 */
1337 flags &= ~EVBACKEND_EPOLL;
1338
1339 return flags;
1340} 2513}
1341 2514
2515#if EV_FEATURE_API
1342unsigned int 2516unsigned int
1343ev_backend (EV_P) 2517ev_iteration (EV_P) EV_THROW
1344{ 2518{
1345 return backend; 2519 return loop_count;
1346} 2520}
1347 2521
1348unsigned int 2522unsigned int
1349ev_loop_count (EV_P) 2523ev_depth (EV_P) EV_THROW
1350{ 2524{
1351 return loop_count; 2525 return loop_depth;
1352} 2526}
1353 2527
1354void 2528void
1355ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2529ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1356{ 2530{
1357 io_blocktime = interval; 2531 io_blocktime = interval;
1358} 2532}
1359 2533
1360void 2534void
1361ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2535ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1362{ 2536{
1363 timeout_blocktime = interval; 2537 timeout_blocktime = interval;
1364} 2538}
1365 2539
2540void
2541ev_set_userdata (EV_P_ void *data) EV_THROW
2542{
2543 userdata = data;
2544}
2545
2546void *
2547ev_userdata (EV_P) EV_THROW
2548{
2549 return userdata;
2550}
2551
2552void
2553ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2554{
2555 invoke_cb = invoke_pending_cb;
2556}
2557
2558void
2559ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2560{
2561 release_cb = release;
2562 acquire_cb = acquire;
2563}
2564#endif
2565
1366/* initialise a loop structure, must be zero-initialised */ 2566/* initialise a loop structure, must be zero-initialised */
1367static void noinline 2567static void noinline ecb_cold
1368loop_init (EV_P_ unsigned int flags) 2568loop_init (EV_P_ unsigned int flags) EV_THROW
1369{ 2569{
1370 if (!backend) 2570 if (!backend)
1371 { 2571 {
2572 origflags = flags;
2573
1372#if EV_USE_REALTIME 2574#if EV_USE_REALTIME
1373 if (!have_realtime) 2575 if (!have_realtime)
1374 { 2576 {
1375 struct timespec ts; 2577 struct timespec ts;
1376 2578
… …
1387 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2589 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1388 have_monotonic = 1; 2590 have_monotonic = 1;
1389 } 2591 }
1390#endif 2592#endif
1391 2593
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 */ 2594 /* pid check not overridable via env */
1407#ifndef _WIN32 2595#ifndef _WIN32
1408 if (flags & EVFLAG_FORKCHECK) 2596 if (flags & EVFLAG_FORKCHECK)
1409 curpid = getpid (); 2597 curpid = getpid ();
1410#endif 2598#endif
… …
1412 if (!(flags & EVFLAG_NOENV) 2600 if (!(flags & EVFLAG_NOENV)
1413 && !enable_secure () 2601 && !enable_secure ()
1414 && getenv ("LIBEV_FLAGS")) 2602 && getenv ("LIBEV_FLAGS"))
1415 flags = atoi (getenv ("LIBEV_FLAGS")); 2603 flags = atoi (getenv ("LIBEV_FLAGS"));
1416 2604
1417 if (!(flags & 0x0000ffffU)) 2605 ev_rt_now = ev_time ();
2606 mn_now = get_clock ();
2607 now_floor = mn_now;
2608 rtmn_diff = ev_rt_now - mn_now;
2609#if EV_FEATURE_API
2610 invoke_cb = ev_invoke_pending;
2611#endif
2612
2613 io_blocktime = 0.;
2614 timeout_blocktime = 0.;
2615 backend = 0;
2616 backend_fd = -1;
2617 sig_pending = 0;
2618#if EV_ASYNC_ENABLE
2619 async_pending = 0;
2620#endif
2621 pipe_write_skipped = 0;
2622 pipe_write_wanted = 0;
2623 evpipe [0] = -1;
2624 evpipe [1] = -1;
2625#if EV_USE_INOTIFY
2626 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2627#endif
2628#if EV_USE_SIGNALFD
2629 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2630#endif
2631
2632 if (!(flags & EVBACKEND_MASK))
1418 flags |= ev_recommended_backends (); 2633 flags |= ev_recommended_backends ();
1419 2634
2635#if EV_USE_IOCP
2636 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2637#endif
1420#if EV_USE_PORT 2638#if EV_USE_PORT
1421 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2639 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1422#endif 2640#endif
1423#if EV_USE_KQUEUE 2641#if EV_USE_KQUEUE
1424 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2642 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1433 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2651 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1434#endif 2652#endif
1435 2653
1436 ev_prepare_init (&pending_w, pendingcb); 2654 ev_prepare_init (&pending_w, pendingcb);
1437 2655
2656#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1438 ev_init (&pipe_w, pipecb); 2657 ev_init (&pipe_w, pipecb);
1439 ev_set_priority (&pipe_w, EV_MAXPRI); 2658 ev_set_priority (&pipe_w, EV_MAXPRI);
2659#endif
1440 } 2660 }
1441} 2661}
1442 2662
1443/* free up a loop structure */ 2663/* free up a loop structure */
1444static void noinline 2664void ecb_cold
1445loop_destroy (EV_P) 2665ev_loop_destroy (EV_P)
1446{ 2666{
1447 int i; 2667 int i;
1448 2668
2669#if EV_MULTIPLICITY
2670 /* mimic free (0) */
2671 if (!EV_A)
2672 return;
2673#endif
2674
2675#if EV_CLEANUP_ENABLE
2676 /* queue cleanup watchers (and execute them) */
2677 if (expect_false (cleanupcnt))
2678 {
2679 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2680 EV_INVOKE_PENDING;
2681 }
2682#endif
2683
2684#if EV_CHILD_ENABLE
2685 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2686 {
2687 ev_ref (EV_A); /* child watcher */
2688 ev_signal_stop (EV_A_ &childev);
2689 }
2690#endif
2691
1449 if (ev_is_active (&pipe_w)) 2692 if (ev_is_active (&pipe_w))
1450 { 2693 {
1451 ev_ref (EV_A); /* signal watcher */ 2694 /*ev_ref (EV_A);*/
1452 ev_io_stop (EV_A_ &pipe_w); 2695 /*ev_io_stop (EV_A_ &pipe_w);*/
1453 2696
2697 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2698 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2699 }
2700
1454#if EV_USE_EVENTFD 2701#if EV_USE_SIGNALFD
1455 if (evfd >= 0) 2702 if (ev_is_active (&sigfd_w))
1456 close (evfd); 2703 close (sigfd);
1457#endif 2704#endif
1458
1459 if (evpipe [0] >= 0)
1460 {
1461 close (evpipe [0]);
1462 close (evpipe [1]);
1463 }
1464 }
1465 2705
1466#if EV_USE_INOTIFY 2706#if EV_USE_INOTIFY
1467 if (fs_fd >= 0) 2707 if (fs_fd >= 0)
1468 close (fs_fd); 2708 close (fs_fd);
1469#endif 2709#endif
1470 2710
1471 if (backend_fd >= 0) 2711 if (backend_fd >= 0)
1472 close (backend_fd); 2712 close (backend_fd);
1473 2713
2714#if EV_USE_IOCP
2715 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2716#endif
1474#if EV_USE_PORT 2717#if EV_USE_PORT
1475 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2718 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1476#endif 2719#endif
1477#if EV_USE_KQUEUE 2720#if EV_USE_KQUEUE
1478 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2721 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1493#if EV_IDLE_ENABLE 2736#if EV_IDLE_ENABLE
1494 array_free (idle, [i]); 2737 array_free (idle, [i]);
1495#endif 2738#endif
1496 } 2739 }
1497 2740
1498 ev_free (anfds); anfdmax = 0; 2741 ev_free (anfds); anfds = 0; anfdmax = 0;
1499 2742
1500 /* have to use the microsoft-never-gets-it-right macro */ 2743 /* have to use the microsoft-never-gets-it-right macro */
1501 array_free (rfeed, EMPTY); 2744 array_free (rfeed, EMPTY);
1502 array_free (fdchange, EMPTY); 2745 array_free (fdchange, EMPTY);
1503 array_free (timer, EMPTY); 2746 array_free (timer, EMPTY);
… …
1505 array_free (periodic, EMPTY); 2748 array_free (periodic, EMPTY);
1506#endif 2749#endif
1507#if EV_FORK_ENABLE 2750#if EV_FORK_ENABLE
1508 array_free (fork, EMPTY); 2751 array_free (fork, EMPTY);
1509#endif 2752#endif
2753#if EV_CLEANUP_ENABLE
2754 array_free (cleanup, EMPTY);
2755#endif
1510 array_free (prepare, EMPTY); 2756 array_free (prepare, EMPTY);
1511 array_free (check, EMPTY); 2757 array_free (check, EMPTY);
1512#if EV_ASYNC_ENABLE 2758#if EV_ASYNC_ENABLE
1513 array_free (async, EMPTY); 2759 array_free (async, EMPTY);
1514#endif 2760#endif
1515 2761
1516 backend = 0; 2762 backend = 0;
2763
2764#if EV_MULTIPLICITY
2765 if (ev_is_default_loop (EV_A))
2766#endif
2767 ev_default_loop_ptr = 0;
2768#if EV_MULTIPLICITY
2769 else
2770 ev_free (EV_A);
2771#endif
1517} 2772}
1518 2773
1519#if EV_USE_INOTIFY 2774#if EV_USE_INOTIFY
1520inline_size void infy_fork (EV_P); 2775inline_size void infy_fork (EV_P);
1521#endif 2776#endif
… …
1534#endif 2789#endif
1535#if EV_USE_INOTIFY 2790#if EV_USE_INOTIFY
1536 infy_fork (EV_A); 2791 infy_fork (EV_A);
1537#endif 2792#endif
1538 2793
2794#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1539 if (ev_is_active (&pipe_w)) 2795 if (ev_is_active (&pipe_w))
1540 { 2796 {
1541 /* this "locks" the handlers against writing to the pipe */ 2797 /* 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 2798
1548 ev_ref (EV_A); 2799 ev_ref (EV_A);
1549 ev_io_stop (EV_A_ &pipe_w); 2800 ev_io_stop (EV_A_ &pipe_w);
1550 2801
1551#if EV_USE_EVENTFD
1552 if (evfd >= 0)
1553 close (evfd);
1554#endif
1555
1556 if (evpipe [0] >= 0) 2802 if (evpipe [0] >= 0)
1557 { 2803 EV_WIN32_CLOSE_FD (evpipe [0]);
1558 close (evpipe [0]);
1559 close (evpipe [1]);
1560 }
1561 2804
1562 evpipe_init (EV_A); 2805 evpipe_init (EV_A);
1563 /* now iterate over everything, in case we missed something */ 2806 /* iterate over everything, in case we missed something before */
1564 pipecb (EV_A_ &pipe_w, EV_READ); 2807 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1565 } 2808 }
2809#endif
1566 2810
1567 postfork = 0; 2811 postfork = 0;
1568} 2812}
1569 2813
1570#if EV_MULTIPLICITY 2814#if EV_MULTIPLICITY
1571 2815
1572struct ev_loop * 2816struct ev_loop * ecb_cold
1573ev_loop_new (unsigned int flags) 2817ev_loop_new (unsigned int flags) EV_THROW
1574{ 2818{
1575 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2819 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1576 2820
1577 memset (loop, 0, sizeof (struct ev_loop)); 2821 memset (EV_A, 0, sizeof (struct ev_loop));
1578
1579 loop_init (EV_A_ flags); 2822 loop_init (EV_A_ flags);
1580 2823
1581 if (ev_backend (EV_A)) 2824 if (ev_backend (EV_A))
1582 return loop; 2825 return EV_A;
1583 2826
2827 ev_free (EV_A);
1584 return 0; 2828 return 0;
1585} 2829}
1586 2830
1587void 2831#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 2832
1600#if EV_VERIFY 2833#if EV_VERIFY
1601static void noinline 2834static void noinline ecb_cold
1602verify_watcher (EV_P_ W w) 2835verify_watcher (EV_P_ W w)
1603{ 2836{
1604 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2837 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1605 2838
1606 if (w->pending) 2839 if (w->pending)
1607 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2840 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1608} 2841}
1609 2842
1610static void noinline 2843static void noinline ecb_cold
1611verify_heap (EV_P_ ANHE *heap, int N) 2844verify_heap (EV_P_ ANHE *heap, int N)
1612{ 2845{
1613 int i; 2846 int i;
1614 2847
1615 for (i = HEAP0; i < N + HEAP0; ++i) 2848 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1620 2853
1621 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2854 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1622 } 2855 }
1623} 2856}
1624 2857
1625static void noinline 2858static void noinline ecb_cold
1626array_verify (EV_P_ W *ws, int cnt) 2859array_verify (EV_P_ W *ws, int cnt)
1627{ 2860{
1628 while (cnt--) 2861 while (cnt--)
1629 { 2862 {
1630 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2863 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1631 verify_watcher (EV_A_ ws [cnt]); 2864 verify_watcher (EV_A_ ws [cnt]);
1632 } 2865 }
1633} 2866}
1634#endif 2867#endif
1635 2868
1636void 2869#if EV_FEATURE_API
1637ev_loop_verify (EV_P) 2870void ecb_cold
2871ev_verify (EV_P) EV_THROW
1638{ 2872{
1639#if EV_VERIFY 2873#if EV_VERIFY
1640 int i; 2874 int i;
1641 WL w; 2875 WL w, w2;
1642 2876
1643 assert (activecnt >= -1); 2877 assert (activecnt >= -1);
1644 2878
1645 assert (fdchangemax >= fdchangecnt); 2879 assert (fdchangemax >= fdchangecnt);
1646 for (i = 0; i < fdchangecnt; ++i) 2880 for (i = 0; i < fdchangecnt; ++i)
1647 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2881 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1648 2882
1649 assert (anfdmax >= 0); 2883 assert (anfdmax >= 0);
1650 for (i = 0; i < anfdmax; ++i) 2884 for (i = 0; i < anfdmax; ++i)
2885 {
2886 int j = 0;
2887
1651 for (w = anfds [i].head; w; w = w->next) 2888 for (w = w2 = anfds [i].head; w; w = w->next)
1652 { 2889 {
1653 verify_watcher (EV_A_ (W)w); 2890 verify_watcher (EV_A_ (W)w);
2891
2892 if (j++ & 1)
2893 {
2894 assert (("libev: io watcher list contains a loop", w != w2));
2895 w2 = w2->next;
2896 }
2897
1654 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2898 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1655 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2899 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1656 } 2900 }
2901 }
1657 2902
1658 assert (timermax >= timercnt); 2903 assert (timermax >= timercnt);
1659 verify_heap (EV_A_ timers, timercnt); 2904 verify_heap (EV_A_ timers, timercnt);
1660 2905
1661#if EV_PERIODIC_ENABLE 2906#if EV_PERIODIC_ENABLE
… …
1676#if EV_FORK_ENABLE 2921#if EV_FORK_ENABLE
1677 assert (forkmax >= forkcnt); 2922 assert (forkmax >= forkcnt);
1678 array_verify (EV_A_ (W *)forks, forkcnt); 2923 array_verify (EV_A_ (W *)forks, forkcnt);
1679#endif 2924#endif
1680 2925
2926#if EV_CLEANUP_ENABLE
2927 assert (cleanupmax >= cleanupcnt);
2928 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2929#endif
2930
1681#if EV_ASYNC_ENABLE 2931#if EV_ASYNC_ENABLE
1682 assert (asyncmax >= asynccnt); 2932 assert (asyncmax >= asynccnt);
1683 array_verify (EV_A_ (W *)asyncs, asynccnt); 2933 array_verify (EV_A_ (W *)asyncs, asynccnt);
1684#endif 2934#endif
1685 2935
2936#if EV_PREPARE_ENABLE
1686 assert (preparemax >= preparecnt); 2937 assert (preparemax >= preparecnt);
1687 array_verify (EV_A_ (W *)prepares, preparecnt); 2938 array_verify (EV_A_ (W *)prepares, preparecnt);
2939#endif
1688 2940
2941#if EV_CHECK_ENABLE
1689 assert (checkmax >= checkcnt); 2942 assert (checkmax >= checkcnt);
1690 array_verify (EV_A_ (W *)checks, checkcnt); 2943 array_verify (EV_A_ (W *)checks, checkcnt);
2944#endif
1691 2945
1692# if 0 2946# if 0
2947#if EV_CHILD_ENABLE
1693 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2948 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) 2949 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2950#endif
1695# endif 2951# endif
1696#endif 2952#endif
1697} 2953}
1698 2954#endif
1699#endif /* multiplicity */
1700 2955
1701#if EV_MULTIPLICITY 2956#if EV_MULTIPLICITY
1702struct ev_loop * 2957struct ev_loop * ecb_cold
1703ev_default_loop_init (unsigned int flags)
1704#else 2958#else
1705int 2959int
2960#endif
1706ev_default_loop (unsigned int flags) 2961ev_default_loop (unsigned int flags) EV_THROW
1707#endif
1708{ 2962{
1709 if (!ev_default_loop_ptr) 2963 if (!ev_default_loop_ptr)
1710 { 2964 {
1711#if EV_MULTIPLICITY 2965#if EV_MULTIPLICITY
1712 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2966 EV_P = ev_default_loop_ptr = &default_loop_struct;
1713#else 2967#else
1714 ev_default_loop_ptr = 1; 2968 ev_default_loop_ptr = 1;
1715#endif 2969#endif
1716 2970
1717 loop_init (EV_A_ flags); 2971 loop_init (EV_A_ flags);
1718 2972
1719 if (ev_backend (EV_A)) 2973 if (ev_backend (EV_A))
1720 { 2974 {
1721#ifndef _WIN32 2975#if EV_CHILD_ENABLE
1722 ev_signal_init (&childev, childcb, SIGCHLD); 2976 ev_signal_init (&childev, childcb, SIGCHLD);
1723 ev_set_priority (&childev, EV_MAXPRI); 2977 ev_set_priority (&childev, EV_MAXPRI);
1724 ev_signal_start (EV_A_ &childev); 2978 ev_signal_start (EV_A_ &childev);
1725 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2979 ev_unref (EV_A); /* child watcher should not keep loop alive */
1726#endif 2980#endif
… …
1731 2985
1732 return ev_default_loop_ptr; 2986 return ev_default_loop_ptr;
1733} 2987}
1734 2988
1735void 2989void
1736ev_default_destroy (void) 2990ev_loop_fork (EV_P) EV_THROW
1737{ 2991{
1738#if EV_MULTIPLICITY 2992 postfork = 1;
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 */
1760} 2993}
1761 2994
1762/*****************************************************************************/ 2995/*****************************************************************************/
1763 2996
1764void 2997void
1765ev_invoke (EV_P_ void *w, int revents) 2998ev_invoke (EV_P_ void *w, int revents)
1766{ 2999{
1767 EV_CB_INVOKE ((W)w, revents); 3000 EV_CB_INVOKE ((W)w, revents);
1768} 3001}
1769 3002
1770inline_speed void 3003unsigned int
1771call_pending (EV_P) 3004ev_pending_count (EV_P) EV_THROW
1772{ 3005{
1773 int pri; 3006 int pri;
3007 unsigned int count = 0;
1774 3008
1775 for (pri = NUMPRI; pri--; ) 3009 for (pri = NUMPRI; pri--; )
3010 count += pendingcnt [pri];
3011
3012 return count;
3013}
3014
3015void noinline
3016ev_invoke_pending (EV_P)
3017{
3018 pendingpri = NUMPRI;
3019
3020 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3021 {
3022 --pendingpri;
3023
1776 while (pendingcnt [pri]) 3024 while (pendingcnt [pendingpri])
1777 { 3025 {
1778 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3026 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1779 3027
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
1783 p->w->pending = 0; 3028 p->w->pending = 0;
1784 EV_CB_INVOKE (p->w, p->events); 3029 EV_CB_INVOKE (p->w, p->events);
1785 EV_FREQUENT_CHECK; 3030 EV_FREQUENT_CHECK;
1786 } 3031 }
3032 }
1787} 3033}
1788 3034
1789#if EV_IDLE_ENABLE 3035#if EV_IDLE_ENABLE
1790/* make idle watchers pending. this handles the "call-idle */ 3036/* make idle watchers pending. this handles the "call-idle */
1791/* only when higher priorities are idle" logic */ 3037/* only when higher priorities are idle" logic */
… …
1843 EV_FREQUENT_CHECK; 3089 EV_FREQUENT_CHECK;
1844 feed_reverse (EV_A_ (W)w); 3090 feed_reverse (EV_A_ (W)w);
1845 } 3091 }
1846 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3092 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1847 3093
1848 feed_reverse_done (EV_A_ EV_TIMEOUT); 3094 feed_reverse_done (EV_A_ EV_TIMER);
1849 } 3095 }
1850} 3096}
1851 3097
1852#if EV_PERIODIC_ENABLE 3098#if EV_PERIODIC_ENABLE
3099
3100static void noinline
3101periodic_recalc (EV_P_ ev_periodic *w)
3102{
3103 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3104 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3105
3106 /* the above almost always errs on the low side */
3107 while (at <= ev_rt_now)
3108 {
3109 ev_tstamp nat = at + w->interval;
3110
3111 /* when resolution fails us, we use ev_rt_now */
3112 if (expect_false (nat == at))
3113 {
3114 at = ev_rt_now;
3115 break;
3116 }
3117
3118 at = nat;
3119 }
3120
3121 ev_at (w) = at;
3122}
3123
1853/* make periodics pending */ 3124/* make periodics pending */
1854inline_size void 3125inline_size void
1855periodics_reify (EV_P) 3126periodics_reify (EV_P)
1856{ 3127{
1857 EV_FREQUENT_CHECK; 3128 EV_FREQUENT_CHECK;
1858 3129
1859 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3130 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1860 { 3131 {
1861 int feed_count = 0;
1862
1863 do 3132 do
1864 { 3133 {
1865 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3134 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1866 3135
1867 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3136 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1876 ANHE_at_cache (periodics [HEAP0]); 3145 ANHE_at_cache (periodics [HEAP0]);
1877 downheap (periodics, periodiccnt, HEAP0); 3146 downheap (periodics, periodiccnt, HEAP0);
1878 } 3147 }
1879 else if (w->interval) 3148 else if (w->interval)
1880 { 3149 {
1881 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3150 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]); 3151 ANHE_at_cache (periodics [HEAP0]);
1896 downheap (periodics, periodiccnt, HEAP0); 3152 downheap (periodics, periodiccnt, HEAP0);
1897 } 3153 }
1898 else 3154 else
1899 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3155 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1906 feed_reverse_done (EV_A_ EV_PERIODIC); 3162 feed_reverse_done (EV_A_ EV_PERIODIC);
1907 } 3163 }
1908} 3164}
1909 3165
1910/* simply recalculate all periodics */ 3166/* simply recalculate all periodics */
1911/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3167/* TODO: maybe ensure that at least one event happens when jumping forward? */
1912static void noinline 3168static void noinline ecb_cold
1913periodics_reschedule (EV_P) 3169periodics_reschedule (EV_P)
1914{ 3170{
1915 int i; 3171 int i;
1916 3172
1917 /* adjust periodics after time jump */ 3173 /* adjust periodics after time jump */
… …
1920 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3176 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1921 3177
1922 if (w->reschedule_cb) 3178 if (w->reschedule_cb)
1923 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3179 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1924 else if (w->interval) 3180 else if (w->interval)
1925 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3181 periodic_recalc (EV_A_ w);
1926 3182
1927 ANHE_at_cache (periodics [i]); 3183 ANHE_at_cache (periodics [i]);
1928 } 3184 }
1929 3185
1930 reheap (periodics, periodiccnt); 3186 reheap (periodics, periodiccnt);
1931} 3187}
1932#endif 3188#endif
1933 3189
1934/* adjust all timers by a given offset */ 3190/* adjust all timers by a given offset */
1935static void noinline 3191static void noinline ecb_cold
1936timers_reschedule (EV_P_ ev_tstamp adjust) 3192timers_reschedule (EV_P_ ev_tstamp adjust)
1937{ 3193{
1938 int i; 3194 int i;
1939 3195
1940 for (i = 0; i < timercnt; ++i) 3196 for (i = 0; i < timercnt; ++i)
… …
1944 ANHE_at_cache (*he); 3200 ANHE_at_cache (*he);
1945 } 3201 }
1946} 3202}
1947 3203
1948/* fetch new monotonic and realtime times from the kernel */ 3204/* fetch new monotonic and realtime times from the kernel */
1949/* also detetc if there was a timejump, and act accordingly */ 3205/* also detect if there was a timejump, and act accordingly */
1950inline_speed void 3206inline_speed void
1951time_update (EV_P_ ev_tstamp max_block) 3207time_update (EV_P_ ev_tstamp max_block)
1952{ 3208{
1953#if EV_USE_MONOTONIC 3209#if EV_USE_MONOTONIC
1954 if (expect_true (have_monotonic)) 3210 if (expect_true (have_monotonic))
… …
1977 * doesn't hurt either as we only do this on time-jumps or 3233 * doesn't hurt either as we only do this on time-jumps or
1978 * in the unlikely event of having been preempted here. 3234 * in the unlikely event of having been preempted here.
1979 */ 3235 */
1980 for (i = 4; --i; ) 3236 for (i = 4; --i; )
1981 { 3237 {
3238 ev_tstamp diff;
1982 rtmn_diff = ev_rt_now - mn_now; 3239 rtmn_diff = ev_rt_now - mn_now;
1983 3240
3241 diff = odiff - rtmn_diff;
3242
1984 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3243 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1985 return; /* all is well */ 3244 return; /* all is well */
1986 3245
1987 ev_rt_now = ev_time (); 3246 ev_rt_now = ev_time ();
1988 mn_now = get_clock (); 3247 mn_now = get_clock ();
1989 now_floor = mn_now; 3248 now_floor = mn_now;
… …
2011 3270
2012 mn_now = ev_rt_now; 3271 mn_now = ev_rt_now;
2013 } 3272 }
2014} 3273}
2015 3274
2016static int loop_done; 3275int
2017
2018void
2019ev_loop (EV_P_ int flags) 3276ev_run (EV_P_ int flags)
2020{ 3277{
3278#if EV_FEATURE_API
3279 ++loop_depth;
3280#endif
3281
3282 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3283
2021 loop_done = EVUNLOOP_CANCEL; 3284 loop_done = EVBREAK_CANCEL;
2022 3285
2023 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3286 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2024 3287
2025 do 3288 do
2026 { 3289 {
2027#if EV_VERIFY >= 2 3290#if EV_VERIFY >= 2
2028 ev_loop_verify (EV_A); 3291 ev_verify (EV_A);
2029#endif 3292#endif
2030 3293
2031#ifndef _WIN32 3294#ifndef _WIN32
2032 if (expect_false (curpid)) /* penalise the forking check even more */ 3295 if (expect_false (curpid)) /* penalise the forking check even more */
2033 if (expect_false (getpid () != curpid)) 3296 if (expect_false (getpid () != curpid))
… …
2041 /* we might have forked, so queue fork handlers */ 3304 /* we might have forked, so queue fork handlers */
2042 if (expect_false (postfork)) 3305 if (expect_false (postfork))
2043 if (forkcnt) 3306 if (forkcnt)
2044 { 3307 {
2045 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3308 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2046 call_pending (EV_A); 3309 EV_INVOKE_PENDING;
2047 } 3310 }
2048#endif 3311#endif
2049 3312
3313#if EV_PREPARE_ENABLE
2050 /* queue prepare watchers (and execute them) */ 3314 /* queue prepare watchers (and execute them) */
2051 if (expect_false (preparecnt)) 3315 if (expect_false (preparecnt))
2052 { 3316 {
2053 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3317 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2054 call_pending (EV_A); 3318 EV_INVOKE_PENDING;
2055 } 3319 }
3320#endif
3321
3322 if (expect_false (loop_done))
3323 break;
2056 3324
2057 /* we might have forked, so reify kernel state if necessary */ 3325 /* we might have forked, so reify kernel state if necessary */
2058 if (expect_false (postfork)) 3326 if (expect_false (postfork))
2059 loop_fork (EV_A); 3327 loop_fork (EV_A);
2060 3328
… …
2064 /* calculate blocking time */ 3332 /* calculate blocking time */
2065 { 3333 {
2066 ev_tstamp waittime = 0.; 3334 ev_tstamp waittime = 0.;
2067 ev_tstamp sleeptime = 0.; 3335 ev_tstamp sleeptime = 0.;
2068 3336
3337 /* remember old timestamp for io_blocktime calculation */
3338 ev_tstamp prev_mn_now = mn_now;
3339
3340 /* update time to cancel out callback processing overhead */
3341 time_update (EV_A_ 1e100);
3342
3343 /* from now on, we want a pipe-wake-up */
3344 pipe_write_wanted = 1;
3345
3346 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3347
2069 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3348 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2070 { 3349 {
2071 /* update time to cancel out callback processing overhead */
2072 time_update (EV_A_ 1e100);
2073
2074 waittime = MAX_BLOCKTIME; 3350 waittime = MAX_BLOCKTIME;
2075 3351
2076 if (timercnt) 3352 if (timercnt)
2077 { 3353 {
2078 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3354 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2079 if (waittime > to) waittime = to; 3355 if (waittime > to) waittime = to;
2080 } 3356 }
2081 3357
2082#if EV_PERIODIC_ENABLE 3358#if EV_PERIODIC_ENABLE
2083 if (periodiccnt) 3359 if (periodiccnt)
2084 { 3360 {
2085 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3361 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2086 if (waittime > to) waittime = to; 3362 if (waittime > to) waittime = to;
2087 } 3363 }
2088#endif 3364#endif
2089 3365
3366 /* don't let timeouts decrease the waittime below timeout_blocktime */
2090 if (expect_false (waittime < timeout_blocktime)) 3367 if (expect_false (waittime < timeout_blocktime))
2091 waittime = timeout_blocktime; 3368 waittime = timeout_blocktime;
2092 3369
2093 sleeptime = waittime - backend_fudge; 3370 /* at this point, we NEED to wait, so we have to ensure */
3371 /* to pass a minimum nonzero value to the backend */
3372 if (expect_false (waittime < backend_mintime))
3373 waittime = backend_mintime;
2094 3374
3375 /* extra check because io_blocktime is commonly 0 */
2095 if (expect_true (sleeptime > io_blocktime)) 3376 if (expect_false (io_blocktime))
2096 sleeptime = io_blocktime;
2097
2098 if (sleeptime)
2099 { 3377 {
3378 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3379
3380 if (sleeptime > waittime - backend_mintime)
3381 sleeptime = waittime - backend_mintime;
3382
3383 if (expect_true (sleeptime > 0.))
3384 {
2100 ev_sleep (sleeptime); 3385 ev_sleep (sleeptime);
2101 waittime -= sleeptime; 3386 waittime -= sleeptime;
3387 }
2102 } 3388 }
2103 } 3389 }
2104 3390
3391#if EV_FEATURE_API
2105 ++loop_count; 3392 ++loop_count;
3393#endif
3394 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2106 backend_poll (EV_A_ waittime); 3395 backend_poll (EV_A_ waittime);
3396 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3397
3398 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3399
3400 ECB_MEMORY_FENCE_ACQUIRE;
3401 if (pipe_write_skipped)
3402 {
3403 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3404 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3405 }
3406
2107 3407
2108 /* update ev_rt_now, do magic */ 3408 /* update ev_rt_now, do magic */
2109 time_update (EV_A_ waittime + sleeptime); 3409 time_update (EV_A_ waittime + sleeptime);
2110 } 3410 }
2111 3411
… …
2118#if EV_IDLE_ENABLE 3418#if EV_IDLE_ENABLE
2119 /* queue idle watchers unless other events are pending */ 3419 /* queue idle watchers unless other events are pending */
2120 idle_reify (EV_A); 3420 idle_reify (EV_A);
2121#endif 3421#endif
2122 3422
3423#if EV_CHECK_ENABLE
2123 /* queue check watchers, to be executed first */ 3424 /* queue check watchers, to be executed first */
2124 if (expect_false (checkcnt)) 3425 if (expect_false (checkcnt))
2125 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3426 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3427#endif
2126 3428
2127 call_pending (EV_A); 3429 EV_INVOKE_PENDING;
2128 } 3430 }
2129 while (expect_true ( 3431 while (expect_true (
2130 activecnt 3432 activecnt
2131 && !loop_done 3433 && !loop_done
2132 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3434 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2133 )); 3435 ));
2134 3436
2135 if (loop_done == EVUNLOOP_ONE) 3437 if (loop_done == EVBREAK_ONE)
2136 loop_done = EVUNLOOP_CANCEL; 3438 loop_done = EVBREAK_CANCEL;
3439
3440#if EV_FEATURE_API
3441 --loop_depth;
3442#endif
3443
3444 return activecnt;
2137} 3445}
2138 3446
2139void 3447void
2140ev_unloop (EV_P_ int how) 3448ev_break (EV_P_ int how) EV_THROW
2141{ 3449{
2142 loop_done = how; 3450 loop_done = how;
2143} 3451}
2144 3452
2145void 3453void
2146ev_ref (EV_P) 3454ev_ref (EV_P) EV_THROW
2147{ 3455{
2148 ++activecnt; 3456 ++activecnt;
2149} 3457}
2150 3458
2151void 3459void
2152ev_unref (EV_P) 3460ev_unref (EV_P) EV_THROW
2153{ 3461{
2154 --activecnt; 3462 --activecnt;
2155} 3463}
2156 3464
2157void 3465void
2158ev_now_update (EV_P) 3466ev_now_update (EV_P) EV_THROW
2159{ 3467{
2160 time_update (EV_A_ 1e100); 3468 time_update (EV_A_ 1e100);
2161} 3469}
2162 3470
2163void 3471void
2164ev_suspend (EV_P) 3472ev_suspend (EV_P) EV_THROW
2165{ 3473{
2166 ev_now_update (EV_A); 3474 ev_now_update (EV_A);
2167} 3475}
2168 3476
2169void 3477void
2170ev_resume (EV_P) 3478ev_resume (EV_P) EV_THROW
2171{ 3479{
2172 ev_tstamp mn_prev = mn_now; 3480 ev_tstamp mn_prev = mn_now;
2173 3481
2174 ev_now_update (EV_A); 3482 ev_now_update (EV_A);
2175 timers_reschedule (EV_A_ mn_now - mn_prev); 3483 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2192inline_size void 3500inline_size void
2193wlist_del (WL *head, WL elem) 3501wlist_del (WL *head, WL elem)
2194{ 3502{
2195 while (*head) 3503 while (*head)
2196 { 3504 {
2197 if (*head == elem) 3505 if (expect_true (*head == elem))
2198 { 3506 {
2199 *head = elem->next; 3507 *head = elem->next;
2200 return; 3508 break;
2201 } 3509 }
2202 3510
2203 head = &(*head)->next; 3511 head = &(*head)->next;
2204 } 3512 }
2205} 3513}
… …
2214 w->pending = 0; 3522 w->pending = 0;
2215 } 3523 }
2216} 3524}
2217 3525
2218int 3526int
2219ev_clear_pending (EV_P_ void *w) 3527ev_clear_pending (EV_P_ void *w) EV_THROW
2220{ 3528{
2221 W w_ = (W)w; 3529 W w_ = (W)w;
2222 int pending = w_->pending; 3530 int pending = w_->pending;
2223 3531
2224 if (expect_true (pending)) 3532 if (expect_true (pending))
… …
2233} 3541}
2234 3542
2235inline_size void 3543inline_size void
2236pri_adjust (EV_P_ W w) 3544pri_adjust (EV_P_ W w)
2237{ 3545{
2238 int pri = w->priority; 3546 int pri = ev_priority (w);
2239 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3547 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2240 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3548 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2241 w->priority = pri; 3549 ev_set_priority (w, pri);
2242} 3550}
2243 3551
2244inline_speed void 3552inline_speed void
2245ev_start (EV_P_ W w, int active) 3553ev_start (EV_P_ W w, int active)
2246{ 3554{
… …
2257} 3565}
2258 3566
2259/*****************************************************************************/ 3567/*****************************************************************************/
2260 3568
2261void noinline 3569void noinline
2262ev_io_start (EV_P_ ev_io *w) 3570ev_io_start (EV_P_ ev_io *w) EV_THROW
2263{ 3571{
2264 int fd = w->fd; 3572 int fd = w->fd;
2265 3573
2266 if (expect_false (ev_is_active (w))) 3574 if (expect_false (ev_is_active (w)))
2267 return; 3575 return;
2268 3576
2269 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3577 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)))); 3578 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2271 3579
2272 EV_FREQUENT_CHECK; 3580 EV_FREQUENT_CHECK;
2273 3581
2274 ev_start (EV_A_ (W)w, 1); 3582 ev_start (EV_A_ (W)w, 1);
2275 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3583 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2276 wlist_add (&anfds[fd].head, (WL)w); 3584 wlist_add (&anfds[fd].head, (WL)w);
2277 3585
3586 /* common bug, apparently */
3587 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3588
2278 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3589 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2279 w->events &= ~EV__IOFDSET; 3590 w->events &= ~EV__IOFDSET;
2280 3591
2281 EV_FREQUENT_CHECK; 3592 EV_FREQUENT_CHECK;
2282} 3593}
2283 3594
2284void noinline 3595void noinline
2285ev_io_stop (EV_P_ ev_io *w) 3596ev_io_stop (EV_P_ ev_io *w) EV_THROW
2286{ 3597{
2287 clear_pending (EV_A_ (W)w); 3598 clear_pending (EV_A_ (W)w);
2288 if (expect_false (!ev_is_active (w))) 3599 if (expect_false (!ev_is_active (w)))
2289 return; 3600 return;
2290 3601
… …
2293 EV_FREQUENT_CHECK; 3604 EV_FREQUENT_CHECK;
2294 3605
2295 wlist_del (&anfds[w->fd].head, (WL)w); 3606 wlist_del (&anfds[w->fd].head, (WL)w);
2296 ev_stop (EV_A_ (W)w); 3607 ev_stop (EV_A_ (W)w);
2297 3608
2298 fd_change (EV_A_ w->fd, 1); 3609 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2299 3610
2300 EV_FREQUENT_CHECK; 3611 EV_FREQUENT_CHECK;
2301} 3612}
2302 3613
2303void noinline 3614void noinline
2304ev_timer_start (EV_P_ ev_timer *w) 3615ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2305{ 3616{
2306 if (expect_false (ev_is_active (w))) 3617 if (expect_false (ev_is_active (w)))
2307 return; 3618 return;
2308 3619
2309 ev_at (w) += mn_now; 3620 ev_at (w) += mn_now;
… …
2323 3634
2324 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3635 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2325} 3636}
2326 3637
2327void noinline 3638void noinline
2328ev_timer_stop (EV_P_ ev_timer *w) 3639ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2329{ 3640{
2330 clear_pending (EV_A_ (W)w); 3641 clear_pending (EV_A_ (W)w);
2331 if (expect_false (!ev_is_active (w))) 3642 if (expect_false (!ev_is_active (w)))
2332 return; 3643 return;
2333 3644
… …
2345 timers [active] = timers [timercnt + HEAP0]; 3656 timers [active] = timers [timercnt + HEAP0];
2346 adjustheap (timers, timercnt, active); 3657 adjustheap (timers, timercnt, active);
2347 } 3658 }
2348 } 3659 }
2349 3660
2350 EV_FREQUENT_CHECK;
2351
2352 ev_at (w) -= mn_now; 3661 ev_at (w) -= mn_now;
2353 3662
2354 ev_stop (EV_A_ (W)w); 3663 ev_stop (EV_A_ (W)w);
3664
3665 EV_FREQUENT_CHECK;
2355} 3666}
2356 3667
2357void noinline 3668void noinline
2358ev_timer_again (EV_P_ ev_timer *w) 3669ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2359{ 3670{
2360 EV_FREQUENT_CHECK; 3671 EV_FREQUENT_CHECK;
3672
3673 clear_pending (EV_A_ (W)w);
2361 3674
2362 if (ev_is_active (w)) 3675 if (ev_is_active (w))
2363 { 3676 {
2364 if (w->repeat) 3677 if (w->repeat)
2365 { 3678 {
… …
2377 } 3690 }
2378 3691
2379 EV_FREQUENT_CHECK; 3692 EV_FREQUENT_CHECK;
2380} 3693}
2381 3694
3695ev_tstamp
3696ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3697{
3698 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3699}
3700
2382#if EV_PERIODIC_ENABLE 3701#if EV_PERIODIC_ENABLE
2383void noinline 3702void noinline
2384ev_periodic_start (EV_P_ ev_periodic *w) 3703ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2385{ 3704{
2386 if (expect_false (ev_is_active (w))) 3705 if (expect_false (ev_is_active (w)))
2387 return; 3706 return;
2388 3707
2389 if (w->reschedule_cb) 3708 if (w->reschedule_cb)
2390 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3709 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2391 else if (w->interval) 3710 else if (w->interval)
2392 { 3711 {
2393 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3712 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 */ 3713 periodic_recalc (EV_A_ w);
2395 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2396 } 3714 }
2397 else 3715 else
2398 ev_at (w) = w->offset; 3716 ev_at (w) = w->offset;
2399 3717
2400 EV_FREQUENT_CHECK; 3718 EV_FREQUENT_CHECK;
… …
2410 3728
2411 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3729 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2412} 3730}
2413 3731
2414void noinline 3732void noinline
2415ev_periodic_stop (EV_P_ ev_periodic *w) 3733ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2416{ 3734{
2417 clear_pending (EV_A_ (W)w); 3735 clear_pending (EV_A_ (W)w);
2418 if (expect_false (!ev_is_active (w))) 3736 if (expect_false (!ev_is_active (w)))
2419 return; 3737 return;
2420 3738
… …
2432 periodics [active] = periodics [periodiccnt + HEAP0]; 3750 periodics [active] = periodics [periodiccnt + HEAP0];
2433 adjustheap (periodics, periodiccnt, active); 3751 adjustheap (periodics, periodiccnt, active);
2434 } 3752 }
2435 } 3753 }
2436 3754
2437 EV_FREQUENT_CHECK;
2438
2439 ev_stop (EV_A_ (W)w); 3755 ev_stop (EV_A_ (W)w);
3756
3757 EV_FREQUENT_CHECK;
2440} 3758}
2441 3759
2442void noinline 3760void noinline
2443ev_periodic_again (EV_P_ ev_periodic *w) 3761ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2444{ 3762{
2445 /* TODO: use adjustheap and recalculation */ 3763 /* TODO: use adjustheap and recalculation */
2446 ev_periodic_stop (EV_A_ w); 3764 ev_periodic_stop (EV_A_ w);
2447 ev_periodic_start (EV_A_ w); 3765 ev_periodic_start (EV_A_ w);
2448} 3766}
… …
2450 3768
2451#ifndef SA_RESTART 3769#ifndef SA_RESTART
2452# define SA_RESTART 0 3770# define SA_RESTART 0
2453#endif 3771#endif
2454 3772
3773#if EV_SIGNAL_ENABLE
3774
2455void noinline 3775void noinline
2456ev_signal_start (EV_P_ ev_signal *w) 3776ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2457{ 3777{
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))) 3778 if (expect_false (ev_is_active (w)))
2462 return; 3779 return;
2463 3780
2464 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3781 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2465 3782
2466 evpipe_init (EV_A); 3783#if EV_MULTIPLICITY
3784 assert (("libev: a signal must not be attached to two different loops",
3785 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2467 3786
2468 EV_FREQUENT_CHECK; 3787 signals [w->signum - 1].loop = EV_A;
3788 ECB_MEMORY_FENCE_RELEASE;
3789#endif
2469 3790
3791 EV_FREQUENT_CHECK;
3792
3793#if EV_USE_SIGNALFD
3794 if (sigfd == -2)
2470 { 3795 {
2471#ifndef _WIN32 3796 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2472 sigset_t full, prev; 3797 if (sigfd < 0 && errno == EINVAL)
2473 sigfillset (&full); 3798 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2474 sigprocmask (SIG_SETMASK, &full, &prev);
2475#endif
2476 3799
2477 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3800 if (sigfd >= 0)
3801 {
3802 fd_intern (sigfd); /* doing it twice will not hurt */
2478 3803
2479#ifndef _WIN32 3804 sigemptyset (&sigfd_set);
2480 sigprocmask (SIG_SETMASK, &prev, 0); 3805
2481#endif 3806 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3807 ev_set_priority (&sigfd_w, EV_MAXPRI);
3808 ev_io_start (EV_A_ &sigfd_w);
3809 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3810 }
2482 } 3811 }
3812
3813 if (sigfd >= 0)
3814 {
3815 /* TODO: check .head */
3816 sigaddset (&sigfd_set, w->signum);
3817 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3818
3819 signalfd (sigfd, &sigfd_set, 0);
3820 }
3821#endif
2483 3822
2484 ev_start (EV_A_ (W)w, 1); 3823 ev_start (EV_A_ (W)w, 1);
2485 wlist_add (&signals [w->signum - 1].head, (WL)w); 3824 wlist_add (&signals [w->signum - 1].head, (WL)w);
2486 3825
2487 if (!((WL)w)->next) 3826 if (!((WL)w)->next)
3827# if EV_USE_SIGNALFD
3828 if (sigfd < 0) /*TODO*/
3829# endif
2488 { 3830 {
2489#if _WIN32 3831# ifdef _WIN32
3832 evpipe_init (EV_A);
3833
2490 signal (w->signum, ev_sighandler); 3834 signal (w->signum, ev_sighandler);
2491#else 3835# else
2492 struct sigaction sa; 3836 struct sigaction sa;
3837
3838 evpipe_init (EV_A);
3839
2493 sa.sa_handler = ev_sighandler; 3840 sa.sa_handler = ev_sighandler;
2494 sigfillset (&sa.sa_mask); 3841 sigfillset (&sa.sa_mask);
2495 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3842 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2496 sigaction (w->signum, &sa, 0); 3843 sigaction (w->signum, &sa, 0);
3844
3845 if (origflags & EVFLAG_NOSIGMASK)
3846 {
3847 sigemptyset (&sa.sa_mask);
3848 sigaddset (&sa.sa_mask, w->signum);
3849 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3850 }
2497#endif 3851#endif
2498 } 3852 }
2499 3853
2500 EV_FREQUENT_CHECK; 3854 EV_FREQUENT_CHECK;
2501} 3855}
2502 3856
2503void noinline 3857void noinline
2504ev_signal_stop (EV_P_ ev_signal *w) 3858ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2505{ 3859{
2506 clear_pending (EV_A_ (W)w); 3860 clear_pending (EV_A_ (W)w);
2507 if (expect_false (!ev_is_active (w))) 3861 if (expect_false (!ev_is_active (w)))
2508 return; 3862 return;
2509 3863
… …
2511 3865
2512 wlist_del (&signals [w->signum - 1].head, (WL)w); 3866 wlist_del (&signals [w->signum - 1].head, (WL)w);
2513 ev_stop (EV_A_ (W)w); 3867 ev_stop (EV_A_ (W)w);
2514 3868
2515 if (!signals [w->signum - 1].head) 3869 if (!signals [w->signum - 1].head)
3870 {
3871#if EV_MULTIPLICITY
3872 signals [w->signum - 1].loop = 0; /* unattach from signal */
3873#endif
3874#if EV_USE_SIGNALFD
3875 if (sigfd >= 0)
3876 {
3877 sigset_t ss;
3878
3879 sigemptyset (&ss);
3880 sigaddset (&ss, w->signum);
3881 sigdelset (&sigfd_set, w->signum);
3882
3883 signalfd (sigfd, &sigfd_set, 0);
3884 sigprocmask (SIG_UNBLOCK, &ss, 0);
3885 }
3886 else
3887#endif
2516 signal (w->signum, SIG_DFL); 3888 signal (w->signum, SIG_DFL);
3889 }
2517 3890
2518 EV_FREQUENT_CHECK; 3891 EV_FREQUENT_CHECK;
2519} 3892}
3893
3894#endif
3895
3896#if EV_CHILD_ENABLE
2520 3897
2521void 3898void
2522ev_child_start (EV_P_ ev_child *w) 3899ev_child_start (EV_P_ ev_child *w) EV_THROW
2523{ 3900{
2524#if EV_MULTIPLICITY 3901#if EV_MULTIPLICITY
2525 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3902 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2526#endif 3903#endif
2527 if (expect_false (ev_is_active (w))) 3904 if (expect_false (ev_is_active (w)))
2528 return; 3905 return;
2529 3906
2530 EV_FREQUENT_CHECK; 3907 EV_FREQUENT_CHECK;
2531 3908
2532 ev_start (EV_A_ (W)w, 1); 3909 ev_start (EV_A_ (W)w, 1);
2533 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3910 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2534 3911
2535 EV_FREQUENT_CHECK; 3912 EV_FREQUENT_CHECK;
2536} 3913}
2537 3914
2538void 3915void
2539ev_child_stop (EV_P_ ev_child *w) 3916ev_child_stop (EV_P_ ev_child *w) EV_THROW
2540{ 3917{
2541 clear_pending (EV_A_ (W)w); 3918 clear_pending (EV_A_ (W)w);
2542 if (expect_false (!ev_is_active (w))) 3919 if (expect_false (!ev_is_active (w)))
2543 return; 3920 return;
2544 3921
2545 EV_FREQUENT_CHECK; 3922 EV_FREQUENT_CHECK;
2546 3923
2547 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3924 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2548 ev_stop (EV_A_ (W)w); 3925 ev_stop (EV_A_ (W)w);
2549 3926
2550 EV_FREQUENT_CHECK; 3927 EV_FREQUENT_CHECK;
2551} 3928}
3929
3930#endif
2552 3931
2553#if EV_STAT_ENABLE 3932#if EV_STAT_ENABLE
2554 3933
2555# ifdef _WIN32 3934# ifdef _WIN32
2556# undef lstat 3935# undef lstat
… …
2562#define MIN_STAT_INTERVAL 0.1074891 3941#define MIN_STAT_INTERVAL 0.1074891
2563 3942
2564static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3943static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2565 3944
2566#if EV_USE_INOTIFY 3945#if EV_USE_INOTIFY
2567# define EV_INOTIFY_BUFSIZE 8192 3946
3947/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3948# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2568 3949
2569static void noinline 3950static void noinline
2570infy_add (EV_P_ ev_stat *w) 3951infy_add (EV_P_ ev_stat *w)
2571{ 3952{
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); 3953 w->wd = inotify_add_watch (fs_fd, w->path,
3954 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3955 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3956 | IN_DONT_FOLLOW | IN_MASK_ADD);
2573 3957
2574 if (w->wd < 0) 3958 if (w->wd >= 0)
3959 {
3960 struct statfs sfs;
3961
3962 /* now local changes will be tracked by inotify, but remote changes won't */
3963 /* unless the filesystem is known to be local, we therefore still poll */
3964 /* also do poll on <2.6.25, but with normal frequency */
3965
3966 if (!fs_2625)
3967 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3968 else if (!statfs (w->path, &sfs)
3969 && (sfs.f_type == 0x1373 /* devfs */
3970 || sfs.f_type == 0x4006 /* fat */
3971 || sfs.f_type == 0x4d44 /* msdos */
3972 || sfs.f_type == 0xEF53 /* ext2/3 */
3973 || sfs.f_type == 0x72b6 /* jffs2 */
3974 || sfs.f_type == 0x858458f6 /* ramfs */
3975 || sfs.f_type == 0x5346544e /* ntfs */
3976 || sfs.f_type == 0x3153464a /* jfs */
3977 || sfs.f_type == 0x9123683e /* btrfs */
3978 || sfs.f_type == 0x52654973 /* reiser3 */
3979 || sfs.f_type == 0x01021994 /* tmpfs */
3980 || sfs.f_type == 0x58465342 /* xfs */))
3981 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3982 else
3983 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2575 { 3984 }
3985 else
3986 {
3987 /* can't use inotify, continue to stat */
2576 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3988 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 3989
2579 /* monitor some parent directory for speedup hints */ 3990 /* 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, */ 3991 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2581 /* but an efficiency issue only */ 3992 /* but an efficiency issue only */
2582 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3993 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2583 { 3994 {
2584 char path [4096]; 3995 char path [4096];
… …
2594 if (!pend || pend == path) 4005 if (!pend || pend == path)
2595 break; 4006 break;
2596 4007
2597 *pend = 0; 4008 *pend = 0;
2598 w->wd = inotify_add_watch (fs_fd, path, mask); 4009 w->wd = inotify_add_watch (fs_fd, path, mask);
2599 } 4010 }
2600 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4011 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2601 } 4012 }
2602 } 4013 }
2603 4014
2604 if (w->wd >= 0) 4015 if (w->wd >= 0)
2605 {
2606 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4016 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2607 4017
2608 /* now local changes will be tracked by inotify, but remote changes won't */ 4018 /* now re-arm timer, if required */
2609 /* unless the filesystem it known to be local, we therefore still poll */ 4019 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); 4020 ev_timer_again (EV_A_ &w->timer);
2624 } 4021 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2625} 4022}
2626 4023
2627static void noinline 4024static void noinline
2628infy_del (EV_P_ ev_stat *w) 4025infy_del (EV_P_ ev_stat *w)
2629{ 4026{
… …
2632 4029
2633 if (wd < 0) 4030 if (wd < 0)
2634 return; 4031 return;
2635 4032
2636 w->wd = -2; 4033 w->wd = -2;
2637 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4034 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2638 wlist_del (&fs_hash [slot].head, (WL)w); 4035 wlist_del (&fs_hash [slot].head, (WL)w);
2639 4036
2640 /* remove this watcher, if others are watching it, they will rearm */ 4037 /* remove this watcher, if others are watching it, they will rearm */
2641 inotify_rm_watch (fs_fd, wd); 4038 inotify_rm_watch (fs_fd, wd);
2642} 4039}
… …
2644static void noinline 4041static void noinline
2645infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4042infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2646{ 4043{
2647 if (slot < 0) 4044 if (slot < 0)
2648 /* overflow, need to check for all hash slots */ 4045 /* overflow, need to check for all hash slots */
2649 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4046 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2650 infy_wd (EV_A_ slot, wd, ev); 4047 infy_wd (EV_A_ slot, wd, ev);
2651 else 4048 else
2652 { 4049 {
2653 WL w_; 4050 WL w_;
2654 4051
2655 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4052 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2656 { 4053 {
2657 ev_stat *w = (ev_stat *)w_; 4054 ev_stat *w = (ev_stat *)w_;
2658 w_ = w_->next; /* lets us remove this watcher and all before it */ 4055 w_ = w_->next; /* lets us remove this watcher and all before it */
2659 4056
2660 if (w->wd == wd || wd == -1) 4057 if (w->wd == wd || wd == -1)
2661 { 4058 {
2662 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4059 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2663 { 4060 {
2664 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4061 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2665 w->wd = -1; 4062 w->wd = -1;
2666 infy_add (EV_A_ w); /* re-add, no matter what */ 4063 infy_add (EV_A_ w); /* re-add, no matter what */
2667 } 4064 }
2668 4065
2669 stat_timer_cb (EV_A_ &w->timer, 0); 4066 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2674 4071
2675static void 4072static void
2676infy_cb (EV_P_ ev_io *w, int revents) 4073infy_cb (EV_P_ ev_io *w, int revents)
2677{ 4074{
2678 char buf [EV_INOTIFY_BUFSIZE]; 4075 char buf [EV_INOTIFY_BUFSIZE];
2679 struct inotify_event *ev = (struct inotify_event *)buf;
2680 int ofs; 4076 int ofs;
2681 int len = read (fs_fd, buf, sizeof (buf)); 4077 int len = read (fs_fd, buf, sizeof (buf));
2682 4078
2683 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4079 for (ofs = 0; ofs < len; )
4080 {
4081 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2684 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4082 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4083 ofs += sizeof (struct inotify_event) + ev->len;
4084 }
2685} 4085}
2686 4086
2687inline_size void 4087inline_size void ecb_cold
2688check_2625 (EV_P) 4088ev_check_2625 (EV_P)
2689{ 4089{
2690 /* kernels < 2.6.25 are borked 4090 /* kernels < 2.6.25 are borked
2691 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4091 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2692 */ 4092 */
2693 struct utsname buf; 4093 if (ev_linux_version () < 0x020619)
2694 int major, minor, micro;
2695
2696 if (uname (&buf))
2697 return; 4094 return;
2698 4095
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; 4096 fs_2625 = 1;
4097}
4098
4099inline_size int
4100infy_newfd (void)
4101{
4102#if defined IN_CLOEXEC && defined IN_NONBLOCK
4103 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4104 if (fd >= 0)
4105 return fd;
4106#endif
4107 return inotify_init ();
2708} 4108}
2709 4109
2710inline_size void 4110inline_size void
2711infy_init (EV_P) 4111infy_init (EV_P)
2712{ 4112{
2713 if (fs_fd != -2) 4113 if (fs_fd != -2)
2714 return; 4114 return;
2715 4115
2716 fs_fd = -1; 4116 fs_fd = -1;
2717 4117
2718 check_2625 (EV_A); 4118 ev_check_2625 (EV_A);
2719 4119
2720 fs_fd = inotify_init (); 4120 fs_fd = infy_newfd ();
2721 4121
2722 if (fs_fd >= 0) 4122 if (fs_fd >= 0)
2723 { 4123 {
4124 fd_intern (fs_fd);
2724 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4125 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2725 ev_set_priority (&fs_w, EV_MAXPRI); 4126 ev_set_priority (&fs_w, EV_MAXPRI);
2726 ev_io_start (EV_A_ &fs_w); 4127 ev_io_start (EV_A_ &fs_w);
4128 ev_unref (EV_A);
2727 } 4129 }
2728} 4130}
2729 4131
2730inline_size void 4132inline_size void
2731infy_fork (EV_P) 4133infy_fork (EV_P)
… …
2733 int slot; 4135 int slot;
2734 4136
2735 if (fs_fd < 0) 4137 if (fs_fd < 0)
2736 return; 4138 return;
2737 4139
4140 ev_ref (EV_A);
4141 ev_io_stop (EV_A_ &fs_w);
2738 close (fs_fd); 4142 close (fs_fd);
2739 fs_fd = inotify_init (); 4143 fs_fd = infy_newfd ();
2740 4144
4145 if (fs_fd >= 0)
4146 {
4147 fd_intern (fs_fd);
4148 ev_io_set (&fs_w, fs_fd, EV_READ);
4149 ev_io_start (EV_A_ &fs_w);
4150 ev_unref (EV_A);
4151 }
4152
2741 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4153 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2742 { 4154 {
2743 WL w_ = fs_hash [slot].head; 4155 WL w_ = fs_hash [slot].head;
2744 fs_hash [slot].head = 0; 4156 fs_hash [slot].head = 0;
2745 4157
2746 while (w_) 4158 while (w_)
… …
2751 w->wd = -1; 4163 w->wd = -1;
2752 4164
2753 if (fs_fd >= 0) 4165 if (fs_fd >= 0)
2754 infy_add (EV_A_ w); /* re-add, no matter what */ 4166 infy_add (EV_A_ w); /* re-add, no matter what */
2755 else 4167 else
4168 {
4169 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4170 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2756 ev_timer_again (EV_A_ &w->timer); 4171 ev_timer_again (EV_A_ &w->timer);
4172 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4173 }
2757 } 4174 }
2758 } 4175 }
2759} 4176}
2760 4177
2761#endif 4178#endif
… …
2765#else 4182#else
2766# define EV_LSTAT(p,b) lstat (p, b) 4183# define EV_LSTAT(p,b) lstat (p, b)
2767#endif 4184#endif
2768 4185
2769void 4186void
2770ev_stat_stat (EV_P_ ev_stat *w) 4187ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2771{ 4188{
2772 if (lstat (w->path, &w->attr) < 0) 4189 if (lstat (w->path, &w->attr) < 0)
2773 w->attr.st_nlink = 0; 4190 w->attr.st_nlink = 0;
2774 else if (!w->attr.st_nlink) 4191 else if (!w->attr.st_nlink)
2775 w->attr.st_nlink = 1; 4192 w->attr.st_nlink = 1;
… …
2778static void noinline 4195static void noinline
2779stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4196stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2780{ 4197{
2781 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4198 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2782 4199
2783 /* we copy this here each the time so that */ 4200 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); 4201 ev_stat_stat (EV_A_ w);
2787 4202
2788 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4203 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2789 if ( 4204 if (
2790 w->prev.st_dev != w->attr.st_dev 4205 prev.st_dev != w->attr.st_dev
2791 || w->prev.st_ino != w->attr.st_ino 4206 || prev.st_ino != w->attr.st_ino
2792 || w->prev.st_mode != w->attr.st_mode 4207 || prev.st_mode != w->attr.st_mode
2793 || w->prev.st_nlink != w->attr.st_nlink 4208 || prev.st_nlink != w->attr.st_nlink
2794 || w->prev.st_uid != w->attr.st_uid 4209 || prev.st_uid != w->attr.st_uid
2795 || w->prev.st_gid != w->attr.st_gid 4210 || prev.st_gid != w->attr.st_gid
2796 || w->prev.st_rdev != w->attr.st_rdev 4211 || prev.st_rdev != w->attr.st_rdev
2797 || w->prev.st_size != w->attr.st_size 4212 || prev.st_size != w->attr.st_size
2798 || w->prev.st_atime != w->attr.st_atime 4213 || prev.st_atime != w->attr.st_atime
2799 || w->prev.st_mtime != w->attr.st_mtime 4214 || prev.st_mtime != w->attr.st_mtime
2800 || w->prev.st_ctime != w->attr.st_ctime 4215 || prev.st_ctime != w->attr.st_ctime
2801 ) { 4216 ) {
4217 /* we only update w->prev on actual differences */
4218 /* in case we test more often than invoke the callback, */
4219 /* to ensure that prev is always different to attr */
4220 w->prev = prev;
4221
2802 #if EV_USE_INOTIFY 4222 #if EV_USE_INOTIFY
2803 if (fs_fd >= 0) 4223 if (fs_fd >= 0)
2804 { 4224 {
2805 infy_del (EV_A_ w); 4225 infy_del (EV_A_ w);
2806 infy_add (EV_A_ w); 4226 infy_add (EV_A_ w);
… …
2811 ev_feed_event (EV_A_ w, EV_STAT); 4231 ev_feed_event (EV_A_ w, EV_STAT);
2812 } 4232 }
2813} 4233}
2814 4234
2815void 4235void
2816ev_stat_start (EV_P_ ev_stat *w) 4236ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2817{ 4237{
2818 if (expect_false (ev_is_active (w))) 4238 if (expect_false (ev_is_active (w)))
2819 return; 4239 return;
2820 4240
2821 ev_stat_stat (EV_A_ w); 4241 ev_stat_stat (EV_A_ w);
… …
2831 4251
2832 if (fs_fd >= 0) 4252 if (fs_fd >= 0)
2833 infy_add (EV_A_ w); 4253 infy_add (EV_A_ w);
2834 else 4254 else
2835#endif 4255#endif
4256 {
2836 ev_timer_again (EV_A_ &w->timer); 4257 ev_timer_again (EV_A_ &w->timer);
4258 ev_unref (EV_A);
4259 }
2837 4260
2838 ev_start (EV_A_ (W)w, 1); 4261 ev_start (EV_A_ (W)w, 1);
2839 4262
2840 EV_FREQUENT_CHECK; 4263 EV_FREQUENT_CHECK;
2841} 4264}
2842 4265
2843void 4266void
2844ev_stat_stop (EV_P_ ev_stat *w) 4267ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2845{ 4268{
2846 clear_pending (EV_A_ (W)w); 4269 clear_pending (EV_A_ (W)w);
2847 if (expect_false (!ev_is_active (w))) 4270 if (expect_false (!ev_is_active (w)))
2848 return; 4271 return;
2849 4272
2850 EV_FREQUENT_CHECK; 4273 EV_FREQUENT_CHECK;
2851 4274
2852#if EV_USE_INOTIFY 4275#if EV_USE_INOTIFY
2853 infy_del (EV_A_ w); 4276 infy_del (EV_A_ w);
2854#endif 4277#endif
4278
4279 if (ev_is_active (&w->timer))
4280 {
4281 ev_ref (EV_A);
2855 ev_timer_stop (EV_A_ &w->timer); 4282 ev_timer_stop (EV_A_ &w->timer);
4283 }
2856 4284
2857 ev_stop (EV_A_ (W)w); 4285 ev_stop (EV_A_ (W)w);
2858 4286
2859 EV_FREQUENT_CHECK; 4287 EV_FREQUENT_CHECK;
2860} 4288}
2861#endif 4289#endif
2862 4290
2863#if EV_IDLE_ENABLE 4291#if EV_IDLE_ENABLE
2864void 4292void
2865ev_idle_start (EV_P_ ev_idle *w) 4293ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2866{ 4294{
2867 if (expect_false (ev_is_active (w))) 4295 if (expect_false (ev_is_active (w)))
2868 return; 4296 return;
2869 4297
2870 pri_adjust (EV_A_ (W)w); 4298 pri_adjust (EV_A_ (W)w);
… …
2883 4311
2884 EV_FREQUENT_CHECK; 4312 EV_FREQUENT_CHECK;
2885} 4313}
2886 4314
2887void 4315void
2888ev_idle_stop (EV_P_ ev_idle *w) 4316ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2889{ 4317{
2890 clear_pending (EV_A_ (W)w); 4318 clear_pending (EV_A_ (W)w);
2891 if (expect_false (!ev_is_active (w))) 4319 if (expect_false (!ev_is_active (w)))
2892 return; 4320 return;
2893 4321
… …
2905 4333
2906 EV_FREQUENT_CHECK; 4334 EV_FREQUENT_CHECK;
2907} 4335}
2908#endif 4336#endif
2909 4337
4338#if EV_PREPARE_ENABLE
2910void 4339void
2911ev_prepare_start (EV_P_ ev_prepare *w) 4340ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2912{ 4341{
2913 if (expect_false (ev_is_active (w))) 4342 if (expect_false (ev_is_active (w)))
2914 return; 4343 return;
2915 4344
2916 EV_FREQUENT_CHECK; 4345 EV_FREQUENT_CHECK;
… …
2921 4350
2922 EV_FREQUENT_CHECK; 4351 EV_FREQUENT_CHECK;
2923} 4352}
2924 4353
2925void 4354void
2926ev_prepare_stop (EV_P_ ev_prepare *w) 4355ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2927{ 4356{
2928 clear_pending (EV_A_ (W)w); 4357 clear_pending (EV_A_ (W)w);
2929 if (expect_false (!ev_is_active (w))) 4358 if (expect_false (!ev_is_active (w)))
2930 return; 4359 return;
2931 4360
… …
2940 4369
2941 ev_stop (EV_A_ (W)w); 4370 ev_stop (EV_A_ (W)w);
2942 4371
2943 EV_FREQUENT_CHECK; 4372 EV_FREQUENT_CHECK;
2944} 4373}
4374#endif
2945 4375
4376#if EV_CHECK_ENABLE
2946void 4377void
2947ev_check_start (EV_P_ ev_check *w) 4378ev_check_start (EV_P_ ev_check *w) EV_THROW
2948{ 4379{
2949 if (expect_false (ev_is_active (w))) 4380 if (expect_false (ev_is_active (w)))
2950 return; 4381 return;
2951 4382
2952 EV_FREQUENT_CHECK; 4383 EV_FREQUENT_CHECK;
… …
2957 4388
2958 EV_FREQUENT_CHECK; 4389 EV_FREQUENT_CHECK;
2959} 4390}
2960 4391
2961void 4392void
2962ev_check_stop (EV_P_ ev_check *w) 4393ev_check_stop (EV_P_ ev_check *w) EV_THROW
2963{ 4394{
2964 clear_pending (EV_A_ (W)w); 4395 clear_pending (EV_A_ (W)w);
2965 if (expect_false (!ev_is_active (w))) 4396 if (expect_false (!ev_is_active (w)))
2966 return; 4397 return;
2967 4398
… …
2976 4407
2977 ev_stop (EV_A_ (W)w); 4408 ev_stop (EV_A_ (W)w);
2978 4409
2979 EV_FREQUENT_CHECK; 4410 EV_FREQUENT_CHECK;
2980} 4411}
4412#endif
2981 4413
2982#if EV_EMBED_ENABLE 4414#if EV_EMBED_ENABLE
2983void noinline 4415void noinline
2984ev_embed_sweep (EV_P_ ev_embed *w) 4416ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2985{ 4417{
2986 ev_loop (w->other, EVLOOP_NONBLOCK); 4418 ev_run (w->other, EVRUN_NOWAIT);
2987} 4419}
2988 4420
2989static void 4421static void
2990embed_io_cb (EV_P_ ev_io *io, int revents) 4422embed_io_cb (EV_P_ ev_io *io, int revents)
2991{ 4423{
2992 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4424 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2993 4425
2994 if (ev_cb (w)) 4426 if (ev_cb (w))
2995 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4427 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2996 else 4428 else
2997 ev_loop (w->other, EVLOOP_NONBLOCK); 4429 ev_run (w->other, EVRUN_NOWAIT);
2998} 4430}
2999 4431
3000static void 4432static void
3001embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4433embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3002{ 4434{
3003 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4435 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3004 4436
3005 { 4437 {
3006 struct ev_loop *loop = w->other; 4438 EV_P = w->other;
3007 4439
3008 while (fdchangecnt) 4440 while (fdchangecnt)
3009 { 4441 {
3010 fd_reify (EV_A); 4442 fd_reify (EV_A);
3011 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4443 ev_run (EV_A_ EVRUN_NOWAIT);
3012 } 4444 }
3013 } 4445 }
3014} 4446}
3015 4447
3016static void 4448static void
… …
3019 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4451 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3020 4452
3021 ev_embed_stop (EV_A_ w); 4453 ev_embed_stop (EV_A_ w);
3022 4454
3023 { 4455 {
3024 struct ev_loop *loop = w->other; 4456 EV_P = w->other;
3025 4457
3026 ev_loop_fork (EV_A); 4458 ev_loop_fork (EV_A);
3027 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4459 ev_run (EV_A_ EVRUN_NOWAIT);
3028 } 4460 }
3029 4461
3030 ev_embed_start (EV_A_ w); 4462 ev_embed_start (EV_A_ w);
3031} 4463}
3032 4464
… …
3037 ev_idle_stop (EV_A_ idle); 4469 ev_idle_stop (EV_A_ idle);
3038} 4470}
3039#endif 4471#endif
3040 4472
3041void 4473void
3042ev_embed_start (EV_P_ ev_embed *w) 4474ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3043{ 4475{
3044 if (expect_false (ev_is_active (w))) 4476 if (expect_false (ev_is_active (w)))
3045 return; 4477 return;
3046 4478
3047 { 4479 {
3048 struct ev_loop *loop = w->other; 4480 EV_P = w->other;
3049 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4481 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); 4482 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3051 } 4483 }
3052 4484
3053 EV_FREQUENT_CHECK; 4485 EV_FREQUENT_CHECK;
… …
3068 4500
3069 EV_FREQUENT_CHECK; 4501 EV_FREQUENT_CHECK;
3070} 4502}
3071 4503
3072void 4504void
3073ev_embed_stop (EV_P_ ev_embed *w) 4505ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3074{ 4506{
3075 clear_pending (EV_A_ (W)w); 4507 clear_pending (EV_A_ (W)w);
3076 if (expect_false (!ev_is_active (w))) 4508 if (expect_false (!ev_is_active (w)))
3077 return; 4509 return;
3078 4510
… …
3080 4512
3081 ev_io_stop (EV_A_ &w->io); 4513 ev_io_stop (EV_A_ &w->io);
3082 ev_prepare_stop (EV_A_ &w->prepare); 4514 ev_prepare_stop (EV_A_ &w->prepare);
3083 ev_fork_stop (EV_A_ &w->fork); 4515 ev_fork_stop (EV_A_ &w->fork);
3084 4516
4517 ev_stop (EV_A_ (W)w);
4518
3085 EV_FREQUENT_CHECK; 4519 EV_FREQUENT_CHECK;
3086} 4520}
3087#endif 4521#endif
3088 4522
3089#if EV_FORK_ENABLE 4523#if EV_FORK_ENABLE
3090void 4524void
3091ev_fork_start (EV_P_ ev_fork *w) 4525ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3092{ 4526{
3093 if (expect_false (ev_is_active (w))) 4527 if (expect_false (ev_is_active (w)))
3094 return; 4528 return;
3095 4529
3096 EV_FREQUENT_CHECK; 4530 EV_FREQUENT_CHECK;
… …
3101 4535
3102 EV_FREQUENT_CHECK; 4536 EV_FREQUENT_CHECK;
3103} 4537}
3104 4538
3105void 4539void
3106ev_fork_stop (EV_P_ ev_fork *w) 4540ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3107{ 4541{
3108 clear_pending (EV_A_ (W)w); 4542 clear_pending (EV_A_ (W)w);
3109 if (expect_false (!ev_is_active (w))) 4543 if (expect_false (!ev_is_active (w)))
3110 return; 4544 return;
3111 4545
… …
3122 4556
3123 EV_FREQUENT_CHECK; 4557 EV_FREQUENT_CHECK;
3124} 4558}
3125#endif 4559#endif
3126 4560
4561#if EV_CLEANUP_ENABLE
4562void
4563ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4564{
4565 if (expect_false (ev_is_active (w)))
4566 return;
4567
4568 EV_FREQUENT_CHECK;
4569
4570 ev_start (EV_A_ (W)w, ++cleanupcnt);
4571 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4572 cleanups [cleanupcnt - 1] = w;
4573
4574 /* cleanup watchers should never keep a refcount on the loop */
4575 ev_unref (EV_A);
4576 EV_FREQUENT_CHECK;
4577}
4578
4579void
4580ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4581{
4582 clear_pending (EV_A_ (W)w);
4583 if (expect_false (!ev_is_active (w)))
4584 return;
4585
4586 EV_FREQUENT_CHECK;
4587 ev_ref (EV_A);
4588
4589 {
4590 int active = ev_active (w);
4591
4592 cleanups [active - 1] = cleanups [--cleanupcnt];
4593 ev_active (cleanups [active - 1]) = active;
4594 }
4595
4596 ev_stop (EV_A_ (W)w);
4597
4598 EV_FREQUENT_CHECK;
4599}
4600#endif
4601
3127#if EV_ASYNC_ENABLE 4602#if EV_ASYNC_ENABLE
3128void 4603void
3129ev_async_start (EV_P_ ev_async *w) 4604ev_async_start (EV_P_ ev_async *w) EV_THROW
3130{ 4605{
3131 if (expect_false (ev_is_active (w))) 4606 if (expect_false (ev_is_active (w)))
3132 return; 4607 return;
4608
4609 w->sent = 0;
3133 4610
3134 evpipe_init (EV_A); 4611 evpipe_init (EV_A);
3135 4612
3136 EV_FREQUENT_CHECK; 4613 EV_FREQUENT_CHECK;
3137 4614
… …
3141 4618
3142 EV_FREQUENT_CHECK; 4619 EV_FREQUENT_CHECK;
3143} 4620}
3144 4621
3145void 4622void
3146ev_async_stop (EV_P_ ev_async *w) 4623ev_async_stop (EV_P_ ev_async *w) EV_THROW
3147{ 4624{
3148 clear_pending (EV_A_ (W)w); 4625 clear_pending (EV_A_ (W)w);
3149 if (expect_false (!ev_is_active (w))) 4626 if (expect_false (!ev_is_active (w)))
3150 return; 4627 return;
3151 4628
… …
3162 4639
3163 EV_FREQUENT_CHECK; 4640 EV_FREQUENT_CHECK;
3164} 4641}
3165 4642
3166void 4643void
3167ev_async_send (EV_P_ ev_async *w) 4644ev_async_send (EV_P_ ev_async *w) EV_THROW
3168{ 4645{
3169 w->sent = 1; 4646 w->sent = 1;
3170 evpipe_write (EV_A_ &gotasync); 4647 evpipe_write (EV_A_ &async_pending);
3171} 4648}
3172#endif 4649#endif
3173 4650
3174/*****************************************************************************/ 4651/*****************************************************************************/
3175 4652
… …
3209 4686
3210 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4687 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3211} 4688}
3212 4689
3213void 4690void
3214ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4691ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3215{ 4692{
3216 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4693 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3217 4694
3218 if (expect_false (!once)) 4695 if (expect_false (!once))
3219 { 4696 {
3220 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4697 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3221 return; 4698 return;
3222 } 4699 }
3223 4700
3224 once->cb = cb; 4701 once->cb = cb;
3225 once->arg = arg; 4702 once->arg = arg;
… …
3240} 4717}
3241 4718
3242/*****************************************************************************/ 4719/*****************************************************************************/
3243 4720
3244#if EV_WALK_ENABLE 4721#if EV_WALK_ENABLE
3245void 4722void ecb_cold
3246ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4723ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3247{ 4724{
3248 int i, j; 4725 int i, j;
3249 ev_watcher_list *wl, *wn; 4726 ev_watcher_list *wl, *wn;
3250 4727
3251 if (types & (EV_IO | EV_EMBED)) 4728 if (types & (EV_IO | EV_EMBED))
… …
3294 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4771 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3295#endif 4772#endif
3296 4773
3297#if EV_IDLE_ENABLE 4774#if EV_IDLE_ENABLE
3298 if (types & EV_IDLE) 4775 if (types & EV_IDLE)
3299 for (j = NUMPRI; i--; ) 4776 for (j = NUMPRI; j--; )
3300 for (i = idlecnt [j]; i--; ) 4777 for (i = idlecnt [j]; i--; )
3301 cb (EV_A_ EV_IDLE, idles [j][i]); 4778 cb (EV_A_ EV_IDLE, idles [j][i]);
3302#endif 4779#endif
3303 4780
3304#if EV_FORK_ENABLE 4781#if EV_FORK_ENABLE
… …
3312 if (types & EV_ASYNC) 4789 if (types & EV_ASYNC)
3313 for (i = asynccnt; i--; ) 4790 for (i = asynccnt; i--; )
3314 cb (EV_A_ EV_ASYNC, asyncs [i]); 4791 cb (EV_A_ EV_ASYNC, asyncs [i]);
3315#endif 4792#endif
3316 4793
4794#if EV_PREPARE_ENABLE
3317 if (types & EV_PREPARE) 4795 if (types & EV_PREPARE)
3318 for (i = preparecnt; i--; ) 4796 for (i = preparecnt; i--; )
3319#if EV_EMBED_ENABLE 4797# if EV_EMBED_ENABLE
3320 if (ev_cb (prepares [i]) != embed_prepare_cb) 4798 if (ev_cb (prepares [i]) != embed_prepare_cb)
3321#endif 4799# endif
3322 cb (EV_A_ EV_PREPARE, prepares [i]); 4800 cb (EV_A_ EV_PREPARE, prepares [i]);
4801#endif
3323 4802
4803#if EV_CHECK_ENABLE
3324 if (types & EV_CHECK) 4804 if (types & EV_CHECK)
3325 for (i = checkcnt; i--; ) 4805 for (i = checkcnt; i--; )
3326 cb (EV_A_ EV_CHECK, checks [i]); 4806 cb (EV_A_ EV_CHECK, checks [i]);
4807#endif
3327 4808
4809#if EV_SIGNAL_ENABLE
3328 if (types & EV_SIGNAL) 4810 if (types & EV_SIGNAL)
3329 for (i = 0; i < signalmax; ++i) 4811 for (i = 0; i < EV_NSIG - 1; ++i)
3330 for (wl = signals [i].head; wl; ) 4812 for (wl = signals [i].head; wl; )
3331 { 4813 {
3332 wn = wl->next; 4814 wn = wl->next;
3333 cb (EV_A_ EV_SIGNAL, wl); 4815 cb (EV_A_ EV_SIGNAL, wl);
3334 wl = wn; 4816 wl = wn;
3335 } 4817 }
4818#endif
3336 4819
4820#if EV_CHILD_ENABLE
3337 if (types & EV_CHILD) 4821 if (types & EV_CHILD)
3338 for (i = EV_PID_HASHSIZE; i--; ) 4822 for (i = (EV_PID_HASHSIZE); i--; )
3339 for (wl = childs [i]; wl; ) 4823 for (wl = childs [i]; wl; )
3340 { 4824 {
3341 wn = wl->next; 4825 wn = wl->next;
3342 cb (EV_A_ EV_CHILD, wl); 4826 cb (EV_A_ EV_CHILD, wl);
3343 wl = wn; 4827 wl = wn;
3344 } 4828 }
4829#endif
3345/* EV_STAT 0x00001000 /* stat data changed */ 4830/* EV_STAT 0x00001000 /* stat data changed */
3346/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4831/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3347} 4832}
3348#endif 4833#endif
3349 4834
3350#if EV_MULTIPLICITY 4835#if EV_MULTIPLICITY
3351 #include "ev_wrap.h" 4836 #include "ev_wrap.h"
3352#endif 4837#endif
3353 4838
3354#ifdef __cplusplus
3355}
3356#endif
3357

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