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Comparing libev/ev.c (file contents):
Revision 1.304 by root, Sun Jul 19 03:12:28 2009 UTC vs.
Revision 1.455 by root, Sun Apr 28 12:45:20 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
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# 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
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h>
157#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
158#include <fcntl.h> 169#include <fcntl.h>
159#include <stddef.h> 170#include <stddef.h>
160 171
161#include <stdio.h> 172#include <stdio.h>
162 173
163#include <assert.h> 174#include <assert.h>
164#include <errno.h> 175#include <errno.h>
165#include <sys/types.h> 176#include <sys/types.h>
166#include <time.h> 177#include <time.h>
178#include <limits.h>
167 179
168#include <signal.h> 180#include <signal.h>
169 181
170#ifdef EV_H 182#ifdef EV_H
171# include EV_H 183# include EV_H
172#else 184#else
173# 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
174#endif 197#endif
175 198
176#ifndef _WIN32 199#ifndef _WIN32
177# include <sys/time.h> 200# include <sys/time.h>
178# include <sys/wait.h> 201# include <sys/wait.h>
179# include <unistd.h> 202# include <unistd.h>
180#else 203#else
181# include <io.h> 204# include <io.h>
182# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
183# include <windows.h> 207# include <windows.h>
184# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
186# endif 210# endif
211# undef EV_AVOID_STDIO
187#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
188 221
189/* 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
190 255
191#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
192# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
193# define EV_USE_CLOCK_SYSCALL 1 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
194# else 259# else
195# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
196# endif 261# endif
197#endif 262#endif
198 263
199#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
200# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
201# define EV_USE_MONOTONIC 1 266# define EV_USE_MONOTONIC EV_FEATURE_OS
202# else 267# else
203# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
204# endif 269# endif
205#endif 270#endif
206 271
… …
208# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
209#endif 274#endif
210 275
211#ifndef EV_USE_NANOSLEEP 276#ifndef EV_USE_NANOSLEEP
212# if _POSIX_C_SOURCE >= 199309L 277# if _POSIX_C_SOURCE >= 199309L
213# define EV_USE_NANOSLEEP 1 278# define EV_USE_NANOSLEEP EV_FEATURE_OS
214# else 279# else
215# define EV_USE_NANOSLEEP 0 280# define EV_USE_NANOSLEEP 0
216# endif 281# endif
217#endif 282#endif
218 283
219#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
220# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
221#endif 286#endif
222 287
223#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
224# ifdef _WIN32 289# ifdef _WIN32
225# define EV_USE_POLL 0 290# define EV_USE_POLL 0
226# else 291# else
227# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
228# endif 293# endif
229#endif 294#endif
230 295
231#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
232# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
233# define EV_USE_EPOLL 1 298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
234# else 299# else
235# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
236# endif 301# endif
237#endif 302#endif
238 303
… …
244# define EV_USE_PORT 0 309# define EV_USE_PORT 0
245#endif 310#endif
246 311
247#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
248# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
249# define EV_USE_INOTIFY 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
250# else 315# else
251# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
252# endif 317# endif
253#endif 318#endif
254 319
255#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
256# if EV_MINIMAL 321# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_PID_HASHSIZE 1
258# else
259# define EV_PID_HASHSIZE 16
260# endif
261#endif 322#endif
262 323
263#ifndef EV_INOTIFY_HASHSIZE 324#ifndef EV_INOTIFY_HASHSIZE
264# if EV_MINIMAL 325# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
265# define EV_INOTIFY_HASHSIZE 1
266# else
267# define EV_INOTIFY_HASHSIZE 16
268# endif
269#endif 326#endif
270 327
271#ifndef EV_USE_EVENTFD 328#ifndef EV_USE_EVENTFD
272# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
273# define EV_USE_EVENTFD 1 330# define EV_USE_EVENTFD EV_FEATURE_OS
274# else 331# else
275# define EV_USE_EVENTFD 0 332# define EV_USE_EVENTFD 0
276# endif 333# endif
277#endif 334#endif
278 335
279#ifndef EV_USE_SIGNALFD 336#ifndef EV_USE_SIGNALFD
280# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
281# define EV_USE_SIGNALFD 1 338# define EV_USE_SIGNALFD EV_FEATURE_OS
282# else 339# else
283# define EV_USE_SIGNALFD 0 340# define EV_USE_SIGNALFD 0
284# endif 341# endif
285#endif 342#endif
286 343
… …
289# define EV_USE_4HEAP 1 346# define EV_USE_4HEAP 1
290# define EV_HEAP_CACHE_AT 1 347# define EV_HEAP_CACHE_AT 1
291#endif 348#endif
292 349
293#ifndef EV_VERIFY 350#ifndef EV_VERIFY
294# define EV_VERIFY !EV_MINIMAL 351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
295#endif 352#endif
296 353
297#ifndef EV_USE_4HEAP 354#ifndef EV_USE_4HEAP
298# define EV_USE_4HEAP !EV_MINIMAL 355# define EV_USE_4HEAP EV_FEATURE_DATA
299#endif 356#endif
300 357
301#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
302# 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
303#endif 376#endif
304 377
305/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 378/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
306/* which makes programs even slower. might work on other unices, too. */ 379/* which makes programs even slower. might work on other unices, too. */
307#if EV_USE_CLOCK_SYSCALL 380#if EV_USE_CLOCK_SYSCALL
308# include <syscall.h> 381# include <sys/syscall.h>
309# ifdef SYS_clock_gettime 382# ifdef SYS_clock_gettime
310# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 383# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
311# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
312# define EV_USE_MONOTONIC 1 385# define EV_USE_MONOTONIC 1
313# else 386# else
… …
332# undef EV_USE_INOTIFY 405# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0 406# define EV_USE_INOTIFY 0
334#endif 407#endif
335 408
336#if !EV_USE_NANOSLEEP 409#if !EV_USE_NANOSLEEP
337# ifndef _WIN32 410/* hp-ux has it in sys/time.h, which we unconditionally include above */
411# if !defined _WIN32 && !defined __hpux
338# include <sys/select.h> 412# include <sys/select.h>
339# endif 413# endif
340#endif 414#endif
341 415
342#if EV_USE_INOTIFY 416#if EV_USE_INOTIFY
343# include <sys/utsname.h>
344# include <sys/statfs.h> 417# include <sys/statfs.h>
345# include <sys/inotify.h> 418# include <sys/inotify.h>
346/* 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 */
347# ifndef IN_DONT_FOLLOW 420# ifndef IN_DONT_FOLLOW
348# undef EV_USE_INOTIFY 421# undef EV_USE_INOTIFY
349# define EV_USE_INOTIFY 0 422# define EV_USE_INOTIFY 0
350# endif 423# endif
351#endif 424#endif
352 425
353#if EV_SELECT_IS_WINSOCKET
354# include <winsock.h>
355#endif
356
357#if EV_USE_EVENTFD 426#if EV_USE_EVENTFD
358/* 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 */
359# include <stdint.h> 428# include <stdint.h>
360# ifndef EFD_NONBLOCK 429# ifndef EFD_NONBLOCK
361# define EFD_NONBLOCK O_NONBLOCK 430# define EFD_NONBLOCK O_NONBLOCK
362# endif 431# endif
363# ifndef EFD_CLOEXEC 432# ifndef EFD_CLOEXEC
433# ifdef O_CLOEXEC
364# define EFD_CLOEXEC O_CLOEXEC 434# define EFD_CLOEXEC O_CLOEXEC
435# else
436# define EFD_CLOEXEC 02000000
437# endif
365# endif 438# endif
366# ifdef __cplusplus 439EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
367extern "C" { 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
368# endif 447# endif
369int eventfd (unsigned int initval, int flags); 448# ifndef SFD_CLOEXEC
370# ifdef __cplusplus 449# ifdef O_CLOEXEC
371} 450# define SFD_CLOEXEC O_CLOEXEC
451# else
452# define SFD_CLOEXEC 02000000
453# endif
372# endif 454# endif
373#endif 455EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
374 456
375#if EV_USE_SIGNALFD 457struct signalfd_siginfo
376# include <sys/signalfd.h> 458{
459 uint32_t ssi_signo;
460 char pad[128 - sizeof (uint32_t)];
461};
377#endif 462#endif
378 463
379/**/ 464/**/
380 465
381#if EV_VERIFY >= 3 466#if EV_VERIFY >= 3
382# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 467# define EV_FREQUENT_CHECK ev_verify (EV_A)
383#else 468#else
384# define EV_FREQUENT_CHECK do { } while (0) 469# define EV_FREQUENT_CHECK do { } while (0)
385#endif 470#endif
386 471
387/* 472/*
388 * This is used to avoid floating point rounding problems. 473 * This is used to work around floating point rounding problems.
389 * It is added to ev_rt_now when scheduling periodics
390 * to ensure progress, time-wise, even when rounding
391 * errors are against us.
392 * This value is good at least till the year 4000. 474 * This value is good at least till the year 4000.
393 * Better solutions welcome.
394 */ 475 */
395#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 */
396 478
397#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) */
398#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) */
399/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
400 481
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;
401#if __GNUC__ >= 4 529 #if __GNUC__
402# define expect(expr,value) __builtin_expect ((expr),(value)) 530 typedef signed long long int64_t;
403# 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
404#else 545#else
405# define expect(expr,value) (expr) 546 #include <inttypes.h>
406# define noinline 547 #if UINTMAX_MAX > 0xffffffffU
407# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 548 #define ECB_PTRSIZE 8
408# define inline 549 #else
550 #define ECB_PTRSIZE 4
551 #endif
409# 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
410#endif 560 #endif
561#endif
411 562
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 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
633 #elif defined __alpha__
634 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
635 #elif defined __hppa__
636 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
637 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
638 #elif defined __ia64__
639 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
640 #endif
641 #endif
642#endif
643
644#ifndef ECB_MEMORY_FENCE
645 #if ECB_GCC_VERSION(4,7)
646 /* see comment below (stdatomic.h) about the C11 memory model. */
647 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
648
649 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
650 * without risking compile time errors with other compilers. We *could*
651 * define our own ecb_clang_has_feature, but I just can't be bothered to work
652 * around this shit time and again.
653 * #elif defined __clang && __has_feature (cxx_atomic)
654 * // see comment below (stdatomic.h) about the C11 memory model.
655 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
656 */
657
658 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
659 #define ECB_MEMORY_FENCE __sync_synchronize ()
660 #elif _MSC_VER >= 1400 /* VC++ 2005 */
661 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
662 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
663 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
664 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
665 #elif defined _WIN32
666 #include <WinNT.h>
667 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
668 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
669 #include <mbarrier.h>
670 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
671 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
672 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
673 #elif __xlC__
674 #define ECB_MEMORY_FENCE __sync ()
675 #endif
676#endif
677
678#ifndef ECB_MEMORY_FENCE
679 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
680 /* we assume that these memory fences work on all variables/all memory accesses, */
681 /* not just C11 atomics and atomic accesses */
682 #include <stdatomic.h>
683 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
684 /* any fence other than seq_cst, which isn't very efficient for us. */
685 /* Why that is, we don't know - either the C11 memory model is quite useless */
686 /* for most usages, or gcc and clang have a bug */
687 /* I *currently* lean towards the latter, and inefficiently implement */
688 /* all three of ecb's fences as a seq_cst fence */
689 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
690 #endif
691#endif
692
693#ifndef ECB_MEMORY_FENCE
694 #if !ECB_AVOID_PTHREADS
695 /*
696 * if you get undefined symbol references to pthread_mutex_lock,
697 * or failure to find pthread.h, then you should implement
698 * the ECB_MEMORY_FENCE operations for your cpu/compiler
699 * OR provide pthread.h and link against the posix thread library
700 * of your system.
701 */
702 #include <pthread.h>
703 #define ECB_NEEDS_PTHREADS 1
704 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
705
706 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
707 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
708 #endif
709#endif
710
711#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
712 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
713#endif
714
715#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
716 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
717#endif
718
719/*****************************************************************************/
720
721#if __cplusplus
722 #define ecb_inline static inline
723#elif ECB_GCC_VERSION(2,5)
724 #define ecb_inline static __inline__
725#elif ECB_C99
726 #define ecb_inline static inline
727#else
728 #define ecb_inline static
729#endif
730
731#if ECB_GCC_VERSION(3,3)
732 #define ecb_restrict __restrict__
733#elif ECB_C99
734 #define ecb_restrict restrict
735#else
736 #define ecb_restrict
737#endif
738
739typedef int ecb_bool;
740
741#define ECB_CONCAT_(a, b) a ## b
742#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
743#define ECB_STRINGIFY_(a) # a
744#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
745
746#define ecb_function_ ecb_inline
747
748#if ECB_GCC_VERSION(3,1)
749 #define ecb_attribute(attrlist) __attribute__(attrlist)
750 #define ecb_is_constant(expr) __builtin_constant_p (expr)
751 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
752 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
753#else
754 #define ecb_attribute(attrlist)
755 #define ecb_is_constant(expr) 0
756 #define ecb_expect(expr,value) (expr)
757 #define ecb_prefetch(addr,rw,locality)
758#endif
759
760/* no emulation for ecb_decltype */
761#if ECB_GCC_VERSION(4,5)
762 #define ecb_decltype(x) __decltype(x)
763#elif ECB_GCC_VERSION(3,0)
764 #define ecb_decltype(x) __typeof(x)
765#endif
766
767#define ecb_noinline ecb_attribute ((__noinline__))
768#define ecb_unused ecb_attribute ((__unused__))
769#define ecb_const ecb_attribute ((__const__))
770#define ecb_pure ecb_attribute ((__pure__))
771
772#if ECB_C11
773 #define ecb_noreturn _Noreturn
774#else
775 #define ecb_noreturn ecb_attribute ((__noreturn__))
776#endif
777
778#if ECB_GCC_VERSION(4,3)
779 #define ecb_artificial ecb_attribute ((__artificial__))
780 #define ecb_hot ecb_attribute ((__hot__))
781 #define ecb_cold ecb_attribute ((__cold__))
782#else
783 #define ecb_artificial
784 #define ecb_hot
785 #define ecb_cold
786#endif
787
788/* put around conditional expressions if you are very sure that the */
789/* expression is mostly true or mostly false. note that these return */
790/* booleans, not the expression. */
412#define expect_false(expr) expect ((expr) != 0, 0) 791#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
413#define expect_true(expr) expect ((expr) != 0, 1) 792#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
793/* for compatibility to the rest of the world */
794#define ecb_likely(expr) ecb_expect_true (expr)
795#define ecb_unlikely(expr) ecb_expect_false (expr)
796
797/* count trailing zero bits and count # of one bits */
798#if ECB_GCC_VERSION(3,4)
799 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
800 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
801 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
802 #define ecb_ctz32(x) __builtin_ctz (x)
803 #define ecb_ctz64(x) __builtin_ctzll (x)
804 #define ecb_popcount32(x) __builtin_popcount (x)
805 /* no popcountll */
806#else
807 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
808 ecb_function_ int
809 ecb_ctz32 (uint32_t x)
810 {
811 int r = 0;
812
813 x &= ~x + 1; /* this isolates the lowest bit */
814
815#if ECB_branchless_on_i386
816 r += !!(x & 0xaaaaaaaa) << 0;
817 r += !!(x & 0xcccccccc) << 1;
818 r += !!(x & 0xf0f0f0f0) << 2;
819 r += !!(x & 0xff00ff00) << 3;
820 r += !!(x & 0xffff0000) << 4;
821#else
822 if (x & 0xaaaaaaaa) r += 1;
823 if (x & 0xcccccccc) r += 2;
824 if (x & 0xf0f0f0f0) r += 4;
825 if (x & 0xff00ff00) r += 8;
826 if (x & 0xffff0000) r += 16;
827#endif
828
829 return r;
830 }
831
832 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
833 ecb_function_ int
834 ecb_ctz64 (uint64_t x)
835 {
836 int shift = x & 0xffffffffU ? 0 : 32;
837 return ecb_ctz32 (x >> shift) + shift;
838 }
839
840 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
841 ecb_function_ int
842 ecb_popcount32 (uint32_t x)
843 {
844 x -= (x >> 1) & 0x55555555;
845 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
846 x = ((x >> 4) + x) & 0x0f0f0f0f;
847 x *= 0x01010101;
848
849 return x >> 24;
850 }
851
852 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
853 ecb_function_ int ecb_ld32 (uint32_t x)
854 {
855 int r = 0;
856
857 if (x >> 16) { x >>= 16; r += 16; }
858 if (x >> 8) { x >>= 8; r += 8; }
859 if (x >> 4) { x >>= 4; r += 4; }
860 if (x >> 2) { x >>= 2; r += 2; }
861 if (x >> 1) { r += 1; }
862
863 return r;
864 }
865
866 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
867 ecb_function_ int ecb_ld64 (uint64_t x)
868 {
869 int r = 0;
870
871 if (x >> 32) { x >>= 32; r += 32; }
872
873 return r + ecb_ld32 (x);
874 }
875#endif
876
877ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
878ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
879ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
880ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
881
882ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
883ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
884{
885 return ( (x * 0x0802U & 0x22110U)
886 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
887}
888
889ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
890ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
891{
892 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
893 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
894 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
895 x = ( x >> 8 ) | ( x << 8);
896
897 return x;
898}
899
900ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
901ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
902{
903 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
904 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
905 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
906 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
907 x = ( x >> 16 ) | ( x << 16);
908
909 return x;
910}
911
912/* popcount64 is only available on 64 bit cpus as gcc builtin */
913/* so for this version we are lazy */
914ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
915ecb_function_ int
916ecb_popcount64 (uint64_t x)
917{
918 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
919}
920
921ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
922ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
923ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
924ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
925ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
926ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
927ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
928ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
929
930ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
931ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
932ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
933ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
934ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
935ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
936ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
937ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
938
939#if ECB_GCC_VERSION(4,3)
940 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
941 #define ecb_bswap32(x) __builtin_bswap32 (x)
942 #define ecb_bswap64(x) __builtin_bswap64 (x)
943#else
944 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
945 ecb_function_ uint16_t
946 ecb_bswap16 (uint16_t x)
947 {
948 return ecb_rotl16 (x, 8);
949 }
950
951 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
952 ecb_function_ uint32_t
953 ecb_bswap32 (uint32_t x)
954 {
955 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
956 }
957
958 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
959 ecb_function_ uint64_t
960 ecb_bswap64 (uint64_t x)
961 {
962 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
963 }
964#endif
965
966#if ECB_GCC_VERSION(4,5)
967 #define ecb_unreachable() __builtin_unreachable ()
968#else
969 /* this seems to work fine, but gcc always emits a warning for it :/ */
970 ecb_inline void ecb_unreachable (void) ecb_noreturn;
971 ecb_inline void ecb_unreachable (void) { }
972#endif
973
974/* try to tell the compiler that some condition is definitely true */
975#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
976
977ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
978ecb_inline unsigned char
979ecb_byteorder_helper (void)
980{
981 /* the union code still generates code under pressure in gcc, */
982 /* but less than using pointers, and always seems to */
983 /* successfully return a constant. */
984 /* the reason why we have this horrible preprocessor mess */
985 /* is to avoid it in all cases, at least on common architectures */
986 /* or when using a recent enough gcc version (>= 4.6) */
987#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
988 return 0x44;
989#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
990 return 0x44;
991#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
992 return 0x11;
993#else
994 union
995 {
996 uint32_t i;
997 uint8_t c;
998 } u = { 0x11223344 };
999 return u.c;
1000#endif
1001}
1002
1003ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1004ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1005ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1006ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1007
1008#if ECB_GCC_VERSION(3,0) || ECB_C99
1009 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1010#else
1011 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1012#endif
1013
1014#if __cplusplus
1015 template<typename T>
1016 static inline T ecb_div_rd (T val, T div)
1017 {
1018 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1019 }
1020 template<typename T>
1021 static inline T ecb_div_ru (T val, T div)
1022 {
1023 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1024 }
1025#else
1026 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1027 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1028#endif
1029
1030#if ecb_cplusplus_does_not_suck
1031 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1032 template<typename T, int N>
1033 static inline int ecb_array_length (const T (&arr)[N])
1034 {
1035 return N;
1036 }
1037#else
1038 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1039#endif
1040
1041/*******************************************************************************/
1042/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1043
1044/* basically, everything uses "ieee pure-endian" floating point numbers */
1045/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1046#if 0 \
1047 || __i386 || __i386__ \
1048 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1049 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1050 || defined __arm__ && defined __ARM_EABI__ \
1051 || defined __s390__ || defined __s390x__ \
1052 || defined __mips__ \
1053 || defined __alpha__ \
1054 || defined __hppa__ \
1055 || defined __ia64__ \
1056 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1057 #define ECB_STDFP 1
1058 #include <string.h> /* for memcpy */
1059#else
1060 #define ECB_STDFP 0
1061 #include <math.h> /* for frexp*, ldexp* */
1062#endif
1063
1064#ifndef ECB_NO_LIBM
1065
1066 /* convert a float to ieee single/binary32 */
1067 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1068 ecb_function_ uint32_t
1069 ecb_float_to_binary32 (float x)
1070 {
1071 uint32_t r;
1072
1073 #if ECB_STDFP
1074 memcpy (&r, &x, 4);
1075 #else
1076 /* slow emulation, works for anything but -0 */
1077 uint32_t m;
1078 int e;
1079
1080 if (x == 0e0f ) return 0x00000000U;
1081 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1082 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1083 if (x != x ) return 0x7fbfffffU;
1084
1085 m = frexpf (x, &e) * 0x1000000U;
1086
1087 r = m & 0x80000000U;
1088
1089 if (r)
1090 m = -m;
1091
1092 if (e <= -126)
1093 {
1094 m &= 0xffffffU;
1095 m >>= (-125 - e);
1096 e = -126;
1097 }
1098
1099 r |= (e + 126) << 23;
1100 r |= m & 0x7fffffU;
1101 #endif
1102
1103 return r;
1104 }
1105
1106 /* converts an ieee single/binary32 to a float */
1107 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1108 ecb_function_ float
1109 ecb_binary32_to_float (uint32_t x)
1110 {
1111 float r;
1112
1113 #if ECB_STDFP
1114 memcpy (&r, &x, 4);
1115 #else
1116 /* emulation, only works for normals and subnormals and +0 */
1117 int neg = x >> 31;
1118 int e = (x >> 23) & 0xffU;
1119
1120 x &= 0x7fffffU;
1121
1122 if (e)
1123 x |= 0x800000U;
1124 else
1125 e = 1;
1126
1127 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1128 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1129
1130 r = neg ? -r : r;
1131 #endif
1132
1133 return r;
1134 }
1135
1136 /* convert a double to ieee double/binary64 */
1137 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1138 ecb_function_ uint64_t
1139 ecb_double_to_binary64 (double x)
1140 {
1141 uint64_t r;
1142
1143 #if ECB_STDFP
1144 memcpy (&r, &x, 8);
1145 #else
1146 /* slow emulation, works for anything but -0 */
1147 uint64_t m;
1148 int e;
1149
1150 if (x == 0e0 ) return 0x0000000000000000U;
1151 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1152 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1153 if (x != x ) return 0X7ff7ffffffffffffU;
1154
1155 m = frexp (x, &e) * 0x20000000000000U;
1156
1157 r = m & 0x8000000000000000;;
1158
1159 if (r)
1160 m = -m;
1161
1162 if (e <= -1022)
1163 {
1164 m &= 0x1fffffffffffffU;
1165 m >>= (-1021 - e);
1166 e = -1022;
1167 }
1168
1169 r |= ((uint64_t)(e + 1022)) << 52;
1170 r |= m & 0xfffffffffffffU;
1171 #endif
1172
1173 return r;
1174 }
1175
1176 /* converts an ieee double/binary64 to a double */
1177 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1178 ecb_function_ double
1179 ecb_binary64_to_double (uint64_t x)
1180 {
1181 double r;
1182
1183 #if ECB_STDFP
1184 memcpy (&r, &x, 8);
1185 #else
1186 /* emulation, only works for normals and subnormals and +0 */
1187 int neg = x >> 63;
1188 int e = (x >> 52) & 0x7ffU;
1189
1190 x &= 0xfffffffffffffU;
1191
1192 if (e)
1193 x |= 0x10000000000000U;
1194 else
1195 e = 1;
1196
1197 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1198 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1199
1200 r = neg ? -r : r;
1201 #endif
1202
1203 return r;
1204 }
1205
1206#endif
1207
1208#endif
1209
1210/* ECB.H END */
1211
1212#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1213/* if your architecture doesn't need memory fences, e.g. because it is
1214 * single-cpu/core, or if you use libev in a project that doesn't use libev
1215 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1216 * libev, in which cases the memory fences become nops.
1217 * alternatively, you can remove this #error and link against libpthread,
1218 * which will then provide the memory fences.
1219 */
1220# error "memory fences not defined for your architecture, please report"
1221#endif
1222
1223#ifndef ECB_MEMORY_FENCE
1224# define ECB_MEMORY_FENCE do { } while (0)
1225# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1226# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1227#endif
1228
1229#define expect_false(cond) ecb_expect_false (cond)
1230#define expect_true(cond) ecb_expect_true (cond)
1231#define noinline ecb_noinline
1232
414#define inline_size static inline 1233#define inline_size ecb_inline
415 1234
416#if EV_MINIMAL 1235#if EV_FEATURE_CODE
1236# define inline_speed ecb_inline
1237#else
417# define inline_speed static noinline 1238# define inline_speed static noinline
418#else
419# define inline_speed static inline
420#endif 1239#endif
421 1240
422#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1241#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
423 1242
424#if EV_MINPRI == EV_MAXPRI 1243#if EV_MINPRI == EV_MAXPRI
… …
437#define ev_active(w) ((W)(w))->active 1256#define ev_active(w) ((W)(w))->active
438#define ev_at(w) ((WT)(w))->at 1257#define ev_at(w) ((WT)(w))->at
439 1258
440#if EV_USE_REALTIME 1259#if EV_USE_REALTIME
441/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1260/* sig_atomic_t is used to avoid per-thread variables or locking but still */
442/* giving it a reasonably high chance of working on typical architetcures */ 1261/* giving it a reasonably high chance of working on typical architectures */
443static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1262static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
444#endif 1263#endif
445 1264
446#if EV_USE_MONOTONIC 1265#if EV_USE_MONOTONIC
447static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1266static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
448#endif 1267#endif
449 1268
1269#ifndef EV_FD_TO_WIN32_HANDLE
1270# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1271#endif
1272#ifndef EV_WIN32_HANDLE_TO_FD
1273# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1274#endif
1275#ifndef EV_WIN32_CLOSE_FD
1276# define EV_WIN32_CLOSE_FD(fd) close (fd)
1277#endif
1278
450#ifdef _WIN32 1279#ifdef _WIN32
451# include "ev_win32.c" 1280# include "ev_win32.c"
452#endif 1281#endif
453 1282
454/*****************************************************************************/ 1283/*****************************************************************************/
455 1284
1285/* define a suitable floor function (only used by periodics atm) */
1286
1287#if EV_USE_FLOOR
1288# include <math.h>
1289# define ev_floor(v) floor (v)
1290#else
1291
1292#include <float.h>
1293
1294/* a floor() replacement function, should be independent of ev_tstamp type */
1295static ev_tstamp noinline
1296ev_floor (ev_tstamp v)
1297{
1298 /* the choice of shift factor is not terribly important */
1299#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1300 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1301#else
1302 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1303#endif
1304
1305 /* argument too large for an unsigned long? */
1306 if (expect_false (v >= shift))
1307 {
1308 ev_tstamp f;
1309
1310 if (v == v - 1.)
1311 return v; /* very large number */
1312
1313 f = shift * ev_floor (v * (1. / shift));
1314 return f + ev_floor (v - f);
1315 }
1316
1317 /* special treatment for negative args? */
1318 if (expect_false (v < 0.))
1319 {
1320 ev_tstamp f = -ev_floor (-v);
1321
1322 return f - (f == v ? 0 : 1);
1323 }
1324
1325 /* fits into an unsigned long */
1326 return (unsigned long)v;
1327}
1328
1329#endif
1330
1331/*****************************************************************************/
1332
1333#ifdef __linux
1334# include <sys/utsname.h>
1335#endif
1336
1337static unsigned int noinline ecb_cold
1338ev_linux_version (void)
1339{
1340#ifdef __linux
1341 unsigned int v = 0;
1342 struct utsname buf;
1343 int i;
1344 char *p = buf.release;
1345
1346 if (uname (&buf))
1347 return 0;
1348
1349 for (i = 3+1; --i; )
1350 {
1351 unsigned int c = 0;
1352
1353 for (;;)
1354 {
1355 if (*p >= '0' && *p <= '9')
1356 c = c * 10 + *p++ - '0';
1357 else
1358 {
1359 p += *p == '.';
1360 break;
1361 }
1362 }
1363
1364 v = (v << 8) | c;
1365 }
1366
1367 return v;
1368#else
1369 return 0;
1370#endif
1371}
1372
1373/*****************************************************************************/
1374
1375#if EV_AVOID_STDIO
1376static void noinline ecb_cold
1377ev_printerr (const char *msg)
1378{
1379 write (STDERR_FILENO, msg, strlen (msg));
1380}
1381#endif
1382
456static void (*syserr_cb)(const char *msg); 1383static void (*syserr_cb)(const char *msg) EV_THROW;
457 1384
458void 1385void ecb_cold
459ev_set_syserr_cb (void (*cb)(const char *msg)) 1386ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
460{ 1387{
461 syserr_cb = cb; 1388 syserr_cb = cb;
462} 1389}
463 1390
464static void noinline 1391static void noinline ecb_cold
465ev_syserr (const char *msg) 1392ev_syserr (const char *msg)
466{ 1393{
467 if (!msg) 1394 if (!msg)
468 msg = "(libev) system error"; 1395 msg = "(libev) system error";
469 1396
470 if (syserr_cb) 1397 if (syserr_cb)
471 syserr_cb (msg); 1398 syserr_cb (msg);
472 else 1399 else
473 { 1400 {
1401#if EV_AVOID_STDIO
1402 ev_printerr (msg);
1403 ev_printerr (": ");
1404 ev_printerr (strerror (errno));
1405 ev_printerr ("\n");
1406#else
474 perror (msg); 1407 perror (msg);
1408#endif
475 abort (); 1409 abort ();
476 } 1410 }
477} 1411}
478 1412
479static void * 1413static void *
480ev_realloc_emul (void *ptr, long size) 1414ev_realloc_emul (void *ptr, long size) EV_THROW
481{ 1415{
482 /* some systems, notably openbsd and darwin, fail to properly 1416 /* some systems, notably openbsd and darwin, fail to properly
483 * implement realloc (x, 0) (as required by both ansi c-98 and 1417 * implement realloc (x, 0) (as required by both ansi c-89 and
484 * the single unix specification, so work around them here. 1418 * the single unix specification, so work around them here.
1419 * recently, also (at least) fedora and debian started breaking it,
1420 * despite documenting it otherwise.
485 */ 1421 */
486 1422
487 if (size) 1423 if (size)
488 return realloc (ptr, size); 1424 return realloc (ptr, size);
489 1425
490 free (ptr); 1426 free (ptr);
491 return 0; 1427 return 0;
492} 1428}
493 1429
494static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1430static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
495 1431
496void 1432void ecb_cold
497ev_set_allocator (void *(*cb)(void *ptr, long size)) 1433ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
498{ 1434{
499 alloc = cb; 1435 alloc = cb;
500} 1436}
501 1437
502inline_speed void * 1438inline_speed void *
… …
504{ 1440{
505 ptr = alloc (ptr, size); 1441 ptr = alloc (ptr, size);
506 1442
507 if (!ptr && size) 1443 if (!ptr && size)
508 { 1444 {
1445#if EV_AVOID_STDIO
1446 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1447#else
509 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1448 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1449#endif
510 abort (); 1450 abort ();
511 } 1451 }
512 1452
513 return ptr; 1453 return ptr;
514} 1454}
… …
530 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1470 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
531 unsigned char unused; 1471 unsigned char unused;
532#if EV_USE_EPOLL 1472#if EV_USE_EPOLL
533 unsigned int egen; /* generation counter to counter epoll bugs */ 1473 unsigned int egen; /* generation counter to counter epoll bugs */
534#endif 1474#endif
535#if EV_SELECT_IS_WINSOCKET 1475#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
536 SOCKET handle; 1476 SOCKET handle;
1477#endif
1478#if EV_USE_IOCP
1479 OVERLAPPED or, ow;
537#endif 1480#endif
538} ANFD; 1481} ANFD;
539 1482
540/* stores the pending event set for a given watcher */ 1483/* stores the pending event set for a given watcher */
541typedef struct 1484typedef struct
… …
583 #undef VAR 1526 #undef VAR
584 }; 1527 };
585 #include "ev_wrap.h" 1528 #include "ev_wrap.h"
586 1529
587 static struct ev_loop default_loop_struct; 1530 static struct ev_loop default_loop_struct;
588 struct ev_loop *ev_default_loop_ptr; 1531 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
589 1532
590#else 1533#else
591 1534
592 ev_tstamp ev_rt_now; 1535 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
593 #define VAR(name,decl) static decl; 1536 #define VAR(name,decl) static decl;
594 #include "ev_vars.h" 1537 #include "ev_vars.h"
595 #undef VAR 1538 #undef VAR
596 1539
597 static int ev_default_loop_ptr; 1540 static int ev_default_loop_ptr;
598 1541
599#endif 1542#endif
600 1543
601#if EV_MINIMAL < 2 1544#if EV_FEATURE_API
602# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1545# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
603# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1546# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
604# define EV_INVOKE_PENDING invoke_cb (EV_A) 1547# define EV_INVOKE_PENDING invoke_cb (EV_A)
605#else 1548#else
606# define EV_RELEASE_CB (void)0 1549# define EV_RELEASE_CB (void)0
607# define EV_ACQUIRE_CB (void)0 1550# define EV_ACQUIRE_CB (void)0
608# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1551# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
609#endif 1552#endif
610 1553
611#define EVUNLOOP_RECURSE 0x80 1554#define EVBREAK_RECURSE 0x80
612 1555
613/*****************************************************************************/ 1556/*****************************************************************************/
614 1557
615#ifndef EV_HAVE_EV_TIME 1558#ifndef EV_HAVE_EV_TIME
616ev_tstamp 1559ev_tstamp
617ev_time (void) 1560ev_time (void) EV_THROW
618{ 1561{
619#if EV_USE_REALTIME 1562#if EV_USE_REALTIME
620 if (expect_true (have_realtime)) 1563 if (expect_true (have_realtime))
621 { 1564 {
622 struct timespec ts; 1565 struct timespec ts;
… …
646 return ev_time (); 1589 return ev_time ();
647} 1590}
648 1591
649#if EV_MULTIPLICITY 1592#if EV_MULTIPLICITY
650ev_tstamp 1593ev_tstamp
651ev_now (EV_P) 1594ev_now (EV_P) EV_THROW
652{ 1595{
653 return ev_rt_now; 1596 return ev_rt_now;
654} 1597}
655#endif 1598#endif
656 1599
657void 1600void
658ev_sleep (ev_tstamp delay) 1601ev_sleep (ev_tstamp delay) EV_THROW
659{ 1602{
660 if (delay > 0.) 1603 if (delay > 0.)
661 { 1604 {
662#if EV_USE_NANOSLEEP 1605#if EV_USE_NANOSLEEP
663 struct timespec ts; 1606 struct timespec ts;
664 1607
665 ts.tv_sec = (time_t)delay; 1608 EV_TS_SET (ts, delay);
666 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
667
668 nanosleep (&ts, 0); 1609 nanosleep (&ts, 0);
669#elif defined(_WIN32) 1610#elif defined _WIN32
670 Sleep ((unsigned long)(delay * 1e3)); 1611 Sleep ((unsigned long)(delay * 1e3));
671#else 1612#else
672 struct timeval tv; 1613 struct timeval tv;
673 1614
674 tv.tv_sec = (time_t)delay;
675 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
676
677 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1615 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
678 /* something not guaranteed by newer posix versions, but guaranteed */ 1616 /* something not guaranteed by newer posix versions, but guaranteed */
679 /* by older ones */ 1617 /* by older ones */
1618 EV_TV_SET (tv, delay);
680 select (0, 0, 0, 0, &tv); 1619 select (0, 0, 0, 0, &tv);
681#endif 1620#endif
682 } 1621 }
683} 1622}
684 1623
685/*****************************************************************************/ 1624/*****************************************************************************/
686 1625
687#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1626#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
688 1627
689/* find a suitable new size for the given array, */ 1628/* find a suitable new size for the given array, */
690/* hopefully by rounding to a ncie-to-malloc size */ 1629/* hopefully by rounding to a nice-to-malloc size */
691inline_size int 1630inline_size int
692array_nextsize (int elem, int cur, int cnt) 1631array_nextsize (int elem, int cur, int cnt)
693{ 1632{
694 int ncur = cur + 1; 1633 int ncur = cur + 1;
695 1634
696 do 1635 do
697 ncur <<= 1; 1636 ncur <<= 1;
698 while (cnt > ncur); 1637 while (cnt > ncur);
699 1638
700 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1639 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
701 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1640 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
702 { 1641 {
703 ncur *= elem; 1642 ncur *= elem;
704 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1643 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
705 ncur = ncur - sizeof (void *) * 4; 1644 ncur = ncur - sizeof (void *) * 4;
… …
707 } 1646 }
708 1647
709 return ncur; 1648 return ncur;
710} 1649}
711 1650
712static noinline void * 1651static void * noinline ecb_cold
713array_realloc (int elem, void *base, int *cur, int cnt) 1652array_realloc (int elem, void *base, int *cur, int cnt)
714{ 1653{
715 *cur = array_nextsize (elem, *cur, cnt); 1654 *cur = array_nextsize (elem, *cur, cnt);
716 return ev_realloc (base, elem * *cur); 1655 return ev_realloc (base, elem * *cur);
717} 1656}
… …
720 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1659 memset ((void *)(base), 0, sizeof (*(base)) * (count))
721 1660
722#define array_needsize(type,base,cur,cnt,init) \ 1661#define array_needsize(type,base,cur,cnt,init) \
723 if (expect_false ((cnt) > (cur))) \ 1662 if (expect_false ((cnt) > (cur))) \
724 { \ 1663 { \
725 int ocur_ = (cur); \ 1664 int ecb_unused ocur_ = (cur); \
726 (base) = (type *)array_realloc \ 1665 (base) = (type *)array_realloc \
727 (sizeof (type), (base), &(cur), (cnt)); \ 1666 (sizeof (type), (base), &(cur), (cnt)); \
728 init ((base) + (ocur_), (cur) - ocur_); \ 1667 init ((base) + (ocur_), (cur) - ocur_); \
729 } 1668 }
730 1669
… …
748pendingcb (EV_P_ ev_prepare *w, int revents) 1687pendingcb (EV_P_ ev_prepare *w, int revents)
749{ 1688{
750} 1689}
751 1690
752void noinline 1691void noinline
753ev_feed_event (EV_P_ void *w, int revents) 1692ev_feed_event (EV_P_ void *w, int revents) EV_THROW
754{ 1693{
755 W w_ = (W)w; 1694 W w_ = (W)w;
756 int pri = ABSPRI (w_); 1695 int pri = ABSPRI (w_);
757 1696
758 if (expect_false (w_->pending)) 1697 if (expect_false (w_->pending))
… …
762 w_->pending = ++pendingcnt [pri]; 1701 w_->pending = ++pendingcnt [pri];
763 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1702 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
764 pendings [pri][w_->pending - 1].w = w_; 1703 pendings [pri][w_->pending - 1].w = w_;
765 pendings [pri][w_->pending - 1].events = revents; 1704 pendings [pri][w_->pending - 1].events = revents;
766 } 1705 }
1706
1707 pendingpri = NUMPRI - 1;
767} 1708}
768 1709
769inline_speed void 1710inline_speed void
770feed_reverse (EV_P_ W w) 1711feed_reverse (EV_P_ W w)
771{ 1712{
… …
791} 1732}
792 1733
793/*****************************************************************************/ 1734/*****************************************************************************/
794 1735
795inline_speed void 1736inline_speed void
796fd_event_nc (EV_P_ int fd, int revents) 1737fd_event_nocheck (EV_P_ int fd, int revents)
797{ 1738{
798 ANFD *anfd = anfds + fd; 1739 ANFD *anfd = anfds + fd;
799 ev_io *w; 1740 ev_io *w;
800 1741
801 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1742 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
813fd_event (EV_P_ int fd, int revents) 1754fd_event (EV_P_ int fd, int revents)
814{ 1755{
815 ANFD *anfd = anfds + fd; 1756 ANFD *anfd = anfds + fd;
816 1757
817 if (expect_true (!anfd->reify)) 1758 if (expect_true (!anfd->reify))
818 fd_event_nc (EV_A_ fd, revents); 1759 fd_event_nocheck (EV_A_ fd, revents);
819} 1760}
820 1761
821void 1762void
822ev_feed_fd_event (EV_P_ int fd, int revents) 1763ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
823{ 1764{
824 if (fd >= 0 && fd < anfdmax) 1765 if (fd >= 0 && fd < anfdmax)
825 fd_event_nc (EV_A_ fd, revents); 1766 fd_event_nocheck (EV_A_ fd, revents);
826} 1767}
827 1768
828/* make sure the external fd watch events are in-sync */ 1769/* make sure the external fd watch events are in-sync */
829/* with the kernel/libev internal state */ 1770/* with the kernel/libev internal state */
830inline_size void 1771inline_size void
831fd_reify (EV_P) 1772fd_reify (EV_P)
832{ 1773{
833 int i; 1774 int i;
834 1775
1776#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1777 for (i = 0; i < fdchangecnt; ++i)
1778 {
1779 int fd = fdchanges [i];
1780 ANFD *anfd = anfds + fd;
1781
1782 if (anfd->reify & EV__IOFDSET && anfd->head)
1783 {
1784 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1785
1786 if (handle != anfd->handle)
1787 {
1788 unsigned long arg;
1789
1790 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1791
1792 /* handle changed, but fd didn't - we need to do it in two steps */
1793 backend_modify (EV_A_ fd, anfd->events, 0);
1794 anfd->events = 0;
1795 anfd->handle = handle;
1796 }
1797 }
1798 }
1799#endif
1800
835 for (i = 0; i < fdchangecnt; ++i) 1801 for (i = 0; i < fdchangecnt; ++i)
836 { 1802 {
837 int fd = fdchanges [i]; 1803 int fd = fdchanges [i];
838 ANFD *anfd = anfds + fd; 1804 ANFD *anfd = anfds + fd;
839 ev_io *w; 1805 ev_io *w;
840 1806
841 unsigned char events = 0; 1807 unsigned char o_events = anfd->events;
1808 unsigned char o_reify = anfd->reify;
842 1809
843 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1810 anfd->reify = 0;
844 events |= (unsigned char)w->events;
845 1811
846#if EV_SELECT_IS_WINSOCKET 1812 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
847 if (events)
848 { 1813 {
849 unsigned long arg; 1814 anfd->events = 0;
850 #ifdef EV_FD_TO_WIN32_HANDLE 1815
851 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1816 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
852 #else 1817 anfd->events |= (unsigned char)w->events;
853 anfd->handle = _get_osfhandle (fd); 1818
854 #endif 1819 if (o_events != anfd->events)
855 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1820 o_reify = EV__IOFDSET; /* actually |= */
856 } 1821 }
857#endif
858 1822
859 { 1823 if (o_reify & EV__IOFDSET)
860 unsigned char o_events = anfd->events;
861 unsigned char o_reify = anfd->reify;
862
863 anfd->reify = 0;
864 anfd->events = events;
865
866 if (o_events != events || o_reify & EV__IOFDSET)
867 backend_modify (EV_A_ fd, o_events, events); 1824 backend_modify (EV_A_ fd, o_events, anfd->events);
868 }
869 } 1825 }
870 1826
871 fdchangecnt = 0; 1827 fdchangecnt = 0;
872} 1828}
873 1829
… …
885 fdchanges [fdchangecnt - 1] = fd; 1841 fdchanges [fdchangecnt - 1] = fd;
886 } 1842 }
887} 1843}
888 1844
889/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1845/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
890inline_speed void 1846inline_speed void ecb_cold
891fd_kill (EV_P_ int fd) 1847fd_kill (EV_P_ int fd)
892{ 1848{
893 ev_io *w; 1849 ev_io *w;
894 1850
895 while ((w = (ev_io *)anfds [fd].head)) 1851 while ((w = (ev_io *)anfds [fd].head))
… …
897 ev_io_stop (EV_A_ w); 1853 ev_io_stop (EV_A_ w);
898 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1854 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
899 } 1855 }
900} 1856}
901 1857
902/* check whether the given fd is atcually valid, for error recovery */ 1858/* check whether the given fd is actually valid, for error recovery */
903inline_size int 1859inline_size int ecb_cold
904fd_valid (int fd) 1860fd_valid (int fd)
905{ 1861{
906#ifdef _WIN32 1862#ifdef _WIN32
907 return _get_osfhandle (fd) != -1; 1863 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
908#else 1864#else
909 return fcntl (fd, F_GETFD) != -1; 1865 return fcntl (fd, F_GETFD) != -1;
910#endif 1866#endif
911} 1867}
912 1868
913/* called on EBADF to verify fds */ 1869/* called on EBADF to verify fds */
914static void noinline 1870static void noinline ecb_cold
915fd_ebadf (EV_P) 1871fd_ebadf (EV_P)
916{ 1872{
917 int fd; 1873 int fd;
918 1874
919 for (fd = 0; fd < anfdmax; ++fd) 1875 for (fd = 0; fd < anfdmax; ++fd)
… …
921 if (!fd_valid (fd) && errno == EBADF) 1877 if (!fd_valid (fd) && errno == EBADF)
922 fd_kill (EV_A_ fd); 1878 fd_kill (EV_A_ fd);
923} 1879}
924 1880
925/* called on ENOMEM in select/poll to kill some fds and retry */ 1881/* called on ENOMEM in select/poll to kill some fds and retry */
926static void noinline 1882static void noinline ecb_cold
927fd_enomem (EV_P) 1883fd_enomem (EV_P)
928{ 1884{
929 int fd; 1885 int fd;
930 1886
931 for (fd = anfdmax; fd--; ) 1887 for (fd = anfdmax; fd--; )
932 if (anfds [fd].events) 1888 if (anfds [fd].events)
933 { 1889 {
934 fd_kill (EV_A_ fd); 1890 fd_kill (EV_A_ fd);
935 return; 1891 break;
936 } 1892 }
937} 1893}
938 1894
939/* usually called after fork if backend needs to re-arm all fds from scratch */ 1895/* usually called after fork if backend needs to re-arm all fds from scratch */
940static void noinline 1896static void noinline
… …
949 anfds [fd].emask = 0; 1905 anfds [fd].emask = 0;
950 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1906 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
951 } 1907 }
952} 1908}
953 1909
1910/* used to prepare libev internal fd's */
1911/* this is not fork-safe */
1912inline_speed void
1913fd_intern (int fd)
1914{
1915#ifdef _WIN32
1916 unsigned long arg = 1;
1917 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1918#else
1919 fcntl (fd, F_SETFD, FD_CLOEXEC);
1920 fcntl (fd, F_SETFL, O_NONBLOCK);
1921#endif
1922}
1923
954/*****************************************************************************/ 1924/*****************************************************************************/
955 1925
956/* 1926/*
957 * the heap functions want a real array index. array index 0 uis guaranteed to not 1927 * the heap functions want a real array index. array index 0 is guaranteed to not
958 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1928 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
959 * the branching factor of the d-tree. 1929 * the branching factor of the d-tree.
960 */ 1930 */
961 1931
962/* 1932/*
… …
1030 2000
1031 for (;;) 2001 for (;;)
1032 { 2002 {
1033 int c = k << 1; 2003 int c = k << 1;
1034 2004
1035 if (c > N + HEAP0 - 1) 2005 if (c >= N + HEAP0)
1036 break; 2006 break;
1037 2007
1038 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2008 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1039 ? 1 : 0; 2009 ? 1 : 0;
1040 2010
… …
1076 2046
1077/* move an element suitably so it is in a correct place */ 2047/* move an element suitably so it is in a correct place */
1078inline_size void 2048inline_size void
1079adjustheap (ANHE *heap, int N, int k) 2049adjustheap (ANHE *heap, int N, int k)
1080{ 2050{
1081 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2051 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1082 upheap (heap, k); 2052 upheap (heap, k);
1083 else 2053 else
1084 downheap (heap, N, k); 2054 downheap (heap, N, k);
1085} 2055}
1086 2056
… …
1099/*****************************************************************************/ 2069/*****************************************************************************/
1100 2070
1101/* associate signal watchers to a signal signal */ 2071/* associate signal watchers to a signal signal */
1102typedef struct 2072typedef struct
1103{ 2073{
2074 EV_ATOMIC_T pending;
2075#if EV_MULTIPLICITY
2076 EV_P;
2077#endif
1104 WL head; 2078 WL head;
1105 EV_ATOMIC_T gotsig;
1106} ANSIG; 2079} ANSIG;
1107 2080
1108static ANSIG *signals; 2081static ANSIG signals [EV_NSIG - 1];
1109static int signalmax;
1110
1111static EV_ATOMIC_T gotsig;
1112 2082
1113/*****************************************************************************/ 2083/*****************************************************************************/
1114 2084
1115/* used to prepare libev internal fd's */ 2085#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1116/* this is not fork-safe */ 2086
2087static void noinline ecb_cold
2088evpipe_init (EV_P)
2089{
2090 if (!ev_is_active (&pipe_w))
2091 {
2092 int fds [2];
2093
2094# if EV_USE_EVENTFD
2095 fds [0] = -1;
2096 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2097 if (fds [1] < 0 && errno == EINVAL)
2098 fds [1] = eventfd (0, 0);
2099
2100 if (fds [1] < 0)
2101# endif
2102 {
2103 while (pipe (fds))
2104 ev_syserr ("(libev) error creating signal/async pipe");
2105
2106 fd_intern (fds [0]);
2107 }
2108
2109 evpipe [0] = fds [0];
2110
2111 if (evpipe [1] < 0)
2112 evpipe [1] = fds [1]; /* first call, set write fd */
2113 else
2114 {
2115 /* on subsequent calls, do not change evpipe [1] */
2116 /* so that evpipe_write can always rely on its value. */
2117 /* this branch does not do anything sensible on windows, */
2118 /* so must not be executed on windows */
2119
2120 dup2 (fds [1], evpipe [1]);
2121 close (fds [1]);
2122 }
2123
2124 fd_intern (evpipe [1]);
2125
2126 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2127 ev_io_start (EV_A_ &pipe_w);
2128 ev_unref (EV_A); /* watcher should not keep loop alive */
2129 }
2130}
2131
1117inline_speed void 2132inline_speed void
1118fd_intern (int fd) 2133evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1119{ 2134{
1120#ifdef _WIN32 2135 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1121 unsigned long arg = 1;
1122 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1123#else
1124 fcntl (fd, F_SETFD, FD_CLOEXEC);
1125 fcntl (fd, F_SETFL, O_NONBLOCK);
1126#endif
1127}
1128 2136
1129static void noinline 2137 if (expect_true (*flag))
1130evpipe_init (EV_P) 2138 return;
1131{ 2139
1132 if (!ev_is_active (&pipe_w)) 2140 *flag = 1;
2141 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2142
2143 pipe_write_skipped = 1;
2144
2145 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2146
2147 if (pipe_write_wanted)
1133 { 2148 {
2149 int old_errno;
2150
2151 pipe_write_skipped = 0;
2152 ECB_MEMORY_FENCE_RELEASE;
2153
2154 old_errno = errno; /* save errno because write will clobber it */
2155
1134#if EV_USE_EVENTFD 2156#if EV_USE_EVENTFD
1135 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2157 if (evpipe [0] < 0)
1136 if (evfd < 0 && errno == EINVAL)
1137 evfd = eventfd (0, 0);
1138
1139 if (evfd >= 0)
1140 { 2158 {
1141 evpipe [0] = -1; 2159 uint64_t counter = 1;
1142 fd_intern (evfd); /* doing it twice doesn't hurt */ 2160 write (evpipe [1], &counter, sizeof (uint64_t));
1143 ev_io_set (&pipe_w, evfd, EV_READ);
1144 } 2161 }
1145 else 2162 else
1146#endif 2163#endif
1147 { 2164 {
1148 while (pipe (evpipe)) 2165#ifdef _WIN32
1149 ev_syserr ("(libev) error creating signal/async pipe"); 2166 WSABUF buf;
1150 2167 DWORD sent;
1151 fd_intern (evpipe [0]); 2168 buf.buf = &buf;
1152 fd_intern (evpipe [1]); 2169 buf.len = 1;
1153 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2170 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2171#else
2172 write (evpipe [1], &(evpipe [1]), 1);
2173#endif
1154 } 2174 }
1155
1156 ev_io_start (EV_A_ &pipe_w);
1157 ev_unref (EV_A); /* watcher should not keep loop alive */
1158 }
1159}
1160
1161inline_size void
1162evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1163{
1164 if (!*flag)
1165 {
1166 int old_errno = errno; /* save errno because write might clobber it */
1167
1168 *flag = 1;
1169
1170#if EV_USE_EVENTFD
1171 if (evfd >= 0)
1172 {
1173 uint64_t counter = 1;
1174 write (evfd, &counter, sizeof (uint64_t));
1175 }
1176 else
1177#endif
1178 write (evpipe [1], &old_errno, 1);
1179 2175
1180 errno = old_errno; 2176 errno = old_errno;
1181 } 2177 }
1182} 2178}
1183 2179
1184/* called whenever the libev signal pipe */ 2180/* called whenever the libev signal pipe */
1185/* got some events (signal, async) */ 2181/* got some events (signal, async) */
1186static void 2182static void
1187pipecb (EV_P_ ev_io *iow, int revents) 2183pipecb (EV_P_ ev_io *iow, int revents)
1188{ 2184{
2185 int i;
2186
2187 if (revents & EV_READ)
2188 {
1189#if EV_USE_EVENTFD 2189#if EV_USE_EVENTFD
1190 if (evfd >= 0) 2190 if (evpipe [0] < 0)
1191 { 2191 {
1192 uint64_t counter; 2192 uint64_t counter;
1193 read (evfd, &counter, sizeof (uint64_t)); 2193 read (evpipe [1], &counter, sizeof (uint64_t));
1194 } 2194 }
1195 else 2195 else
1196#endif 2196#endif
1197 { 2197 {
1198 char dummy; 2198 char dummy[4];
2199#ifdef _WIN32
2200 WSABUF buf;
2201 DWORD recvd;
2202 DWORD flags = 0;
2203 buf.buf = dummy;
2204 buf.len = sizeof (dummy);
2205 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2206#else
1199 read (evpipe [0], &dummy, 1); 2207 read (evpipe [0], &dummy, sizeof (dummy));
2208#endif
2209 }
2210 }
2211
2212 pipe_write_skipped = 0;
2213
2214 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2215
2216#if EV_SIGNAL_ENABLE
2217 if (sig_pending)
1200 } 2218 {
2219 sig_pending = 0;
1201 2220
1202 if (gotsig && ev_is_default_loop (EV_A)) 2221 ECB_MEMORY_FENCE;
1203 {
1204 int signum;
1205 gotsig = 0;
1206 2222
1207 for (signum = signalmax; signum--; ) 2223 for (i = EV_NSIG - 1; i--; )
1208 if (signals [signum].gotsig) 2224 if (expect_false (signals [i].pending))
1209 ev_feed_signal_event (EV_A_ signum + 1); 2225 ev_feed_signal_event (EV_A_ i + 1);
1210 } 2226 }
2227#endif
1211 2228
1212#if EV_ASYNC_ENABLE 2229#if EV_ASYNC_ENABLE
1213 if (gotasync) 2230 if (async_pending)
1214 { 2231 {
1215 int i; 2232 async_pending = 0;
1216 gotasync = 0; 2233
2234 ECB_MEMORY_FENCE;
1217 2235
1218 for (i = asynccnt; i--; ) 2236 for (i = asynccnt; i--; )
1219 if (asyncs [i]->sent) 2237 if (asyncs [i]->sent)
1220 { 2238 {
1221 asyncs [i]->sent = 0; 2239 asyncs [i]->sent = 0;
2240 ECB_MEMORY_FENCE_RELEASE;
1222 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2241 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1223 } 2242 }
1224 } 2243 }
1225#endif 2244#endif
1226} 2245}
1227 2246
1228/*****************************************************************************/ 2247/*****************************************************************************/
1229 2248
2249void
2250ev_feed_signal (int signum) EV_THROW
2251{
2252#if EV_MULTIPLICITY
2253 EV_P;
2254 ECB_MEMORY_FENCE_ACQUIRE;
2255 EV_A = signals [signum - 1].loop;
2256
2257 if (!EV_A)
2258 return;
2259#endif
2260
2261 signals [signum - 1].pending = 1;
2262 evpipe_write (EV_A_ &sig_pending);
2263}
2264
1230static void 2265static void
1231ev_sighandler (int signum) 2266ev_sighandler (int signum)
1232{ 2267{
2268#ifdef _WIN32
2269 signal (signum, ev_sighandler);
2270#endif
2271
2272 ev_feed_signal (signum);
2273}
2274
2275void noinline
2276ev_feed_signal_event (EV_P_ int signum) EV_THROW
2277{
2278 WL w;
2279
2280 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2281 return;
2282
2283 --signum;
2284
1233#if EV_MULTIPLICITY 2285#if EV_MULTIPLICITY
1234 struct ev_loop *loop = &default_loop_struct; 2286 /* it is permissible to try to feed a signal to the wrong loop */
1235#endif 2287 /* or, likely more useful, feeding a signal nobody is waiting for */
1236 2288
1237#if _WIN32 2289 if (expect_false (signals [signum].loop != EV_A))
1238 signal (signum, ev_sighandler);
1239#endif
1240
1241 signals [signum - 1].gotsig = 1;
1242 evpipe_write (EV_A_ &gotsig);
1243}
1244
1245void noinline
1246ev_feed_signal_event (EV_P_ int signum)
1247{
1248 WL w;
1249
1250#if EV_MULTIPLICITY
1251 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1252#endif
1253
1254 --signum;
1255
1256 if (signum < 0 || signum >= signalmax)
1257 return; 2290 return;
2291#endif
1258 2292
1259 signals [signum].gotsig = 0; 2293 signals [signum].pending = 0;
2294 ECB_MEMORY_FENCE_RELEASE;
1260 2295
1261 for (w = signals [signum].head; w; w = w->next) 2296 for (w = signals [signum].head; w; w = w->next)
1262 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2297 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1263} 2298}
1264 2299
1265#if EV_USE_SIGNALFD 2300#if EV_USE_SIGNALFD
1266static void 2301static void
1267sigfdcb (EV_P_ ev_io *iow, int revents) 2302sigfdcb (EV_P_ ev_io *iow, int revents)
1268{ 2303{
1269 struct signalfd_siginfo si[4], *sip; 2304 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1270 2305
1271 for (;;) 2306 for (;;)
1272 { 2307 {
1273 ssize_t res = read (sigfd, si, sizeof (si)); 2308 ssize_t res = read (sigfd, si, sizeof (si));
1274 2309
… …
1280 break; 2315 break;
1281 } 2316 }
1282} 2317}
1283#endif 2318#endif
1284 2319
2320#endif
2321
1285/*****************************************************************************/ 2322/*****************************************************************************/
1286 2323
2324#if EV_CHILD_ENABLE
1287static WL childs [EV_PID_HASHSIZE]; 2325static WL childs [EV_PID_HASHSIZE];
1288
1289#ifndef _WIN32
1290 2326
1291static ev_signal childev; 2327static ev_signal childev;
1292 2328
1293#ifndef WIFCONTINUED 2329#ifndef WIFCONTINUED
1294# define WIFCONTINUED(status) 0 2330# define WIFCONTINUED(status) 0
… …
1299child_reap (EV_P_ int chain, int pid, int status) 2335child_reap (EV_P_ int chain, int pid, int status)
1300{ 2336{
1301 ev_child *w; 2337 ev_child *w;
1302 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2338 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1303 2339
1304 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2340 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1305 { 2341 {
1306 if ((w->pid == pid || !w->pid) 2342 if ((w->pid == pid || !w->pid)
1307 && (!traced || (w->flags & 1))) 2343 && (!traced || (w->flags & 1)))
1308 { 2344 {
1309 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2345 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1334 /* make sure we are called again until all children have been reaped */ 2370 /* make sure we are called again until all children have been reaped */
1335 /* we need to do it this way so that the callback gets called before we continue */ 2371 /* we need to do it this way so that the callback gets called before we continue */
1336 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2372 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1337 2373
1338 child_reap (EV_A_ pid, pid, status); 2374 child_reap (EV_A_ pid, pid, status);
1339 if (EV_PID_HASHSIZE > 1) 2375 if ((EV_PID_HASHSIZE) > 1)
1340 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2376 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1341} 2377}
1342 2378
1343#endif 2379#endif
1344 2380
1345/*****************************************************************************/ 2381/*****************************************************************************/
1346 2382
2383#if EV_USE_IOCP
2384# include "ev_iocp.c"
2385#endif
1347#if EV_USE_PORT 2386#if EV_USE_PORT
1348# include "ev_port.c" 2387# include "ev_port.c"
1349#endif 2388#endif
1350#if EV_USE_KQUEUE 2389#if EV_USE_KQUEUE
1351# include "ev_kqueue.c" 2390# include "ev_kqueue.c"
… …
1358#endif 2397#endif
1359#if EV_USE_SELECT 2398#if EV_USE_SELECT
1360# include "ev_select.c" 2399# include "ev_select.c"
1361#endif 2400#endif
1362 2401
1363int 2402int ecb_cold
1364ev_version_major (void) 2403ev_version_major (void) EV_THROW
1365{ 2404{
1366 return EV_VERSION_MAJOR; 2405 return EV_VERSION_MAJOR;
1367} 2406}
1368 2407
1369int 2408int ecb_cold
1370ev_version_minor (void) 2409ev_version_minor (void) EV_THROW
1371{ 2410{
1372 return EV_VERSION_MINOR; 2411 return EV_VERSION_MINOR;
1373} 2412}
1374 2413
1375/* return true if we are running with elevated privileges and should ignore env variables */ 2414/* return true if we are running with elevated privileges and should ignore env variables */
1376int inline_size 2415int inline_size ecb_cold
1377enable_secure (void) 2416enable_secure (void)
1378{ 2417{
1379#ifdef _WIN32 2418#ifdef _WIN32
1380 return 0; 2419 return 0;
1381#else 2420#else
1382 return getuid () != geteuid () 2421 return getuid () != geteuid ()
1383 || getgid () != getegid (); 2422 || getgid () != getegid ();
1384#endif 2423#endif
1385} 2424}
1386 2425
1387unsigned int 2426unsigned int ecb_cold
1388ev_supported_backends (void) 2427ev_supported_backends (void) EV_THROW
1389{ 2428{
1390 unsigned int flags = 0; 2429 unsigned int flags = 0;
1391 2430
1392 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2431 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1393 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2432 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1396 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2435 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1397 2436
1398 return flags; 2437 return flags;
1399} 2438}
1400 2439
1401unsigned int 2440unsigned int ecb_cold
1402ev_recommended_backends (void) 2441ev_recommended_backends (void) EV_THROW
1403{ 2442{
1404 unsigned int flags = ev_supported_backends (); 2443 unsigned int flags = ev_supported_backends ();
1405 2444
1406#ifndef __NetBSD__ 2445#ifndef __NetBSD__
1407 /* kqueue is borked on everything but netbsd apparently */ 2446 /* kqueue is borked on everything but netbsd apparently */
… …
1411#ifdef __APPLE__ 2450#ifdef __APPLE__
1412 /* only select works correctly on that "unix-certified" platform */ 2451 /* only select works correctly on that "unix-certified" platform */
1413 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2452 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1414 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2453 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1415#endif 2454#endif
2455#ifdef __FreeBSD__
2456 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2457#endif
1416 2458
1417 return flags; 2459 return flags;
1418} 2460}
1419 2461
2462unsigned int ecb_cold
2463ev_embeddable_backends (void) EV_THROW
2464{
2465 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2466
2467 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2468 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2469 flags &= ~EVBACKEND_EPOLL;
2470
2471 return flags;
2472}
2473
1420unsigned int 2474unsigned int
1421ev_embeddable_backends (void) 2475ev_backend (EV_P) EV_THROW
1422{ 2476{
1423 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2477 return backend;
1424
1425 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1426 /* please fix it and tell me how to detect the fix */
1427 flags &= ~EVBACKEND_EPOLL;
1428
1429 return flags;
1430} 2478}
1431 2479
2480#if EV_FEATURE_API
1432unsigned int 2481unsigned int
1433ev_backend (EV_P) 2482ev_iteration (EV_P) EV_THROW
1434{ 2483{
1435 return backend; 2484 return loop_count;
1436} 2485}
1437 2486
1438#if EV_MINIMAL < 2
1439unsigned int 2487unsigned int
1440ev_loop_count (EV_P) 2488ev_depth (EV_P) EV_THROW
1441{
1442 return loop_count;
1443}
1444
1445unsigned int
1446ev_loop_depth (EV_P)
1447{ 2489{
1448 return loop_depth; 2490 return loop_depth;
1449} 2491}
1450 2492
1451void 2493void
1452ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2494ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1453{ 2495{
1454 io_blocktime = interval; 2496 io_blocktime = interval;
1455} 2497}
1456 2498
1457void 2499void
1458ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2500ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1459{ 2501{
1460 timeout_blocktime = interval; 2502 timeout_blocktime = interval;
1461} 2503}
1462 2504
1463void 2505void
1464ev_set_userdata (EV_P_ void *data) 2506ev_set_userdata (EV_P_ void *data) EV_THROW
1465{ 2507{
1466 userdata = data; 2508 userdata = data;
1467} 2509}
1468 2510
1469void * 2511void *
1470ev_userdata (EV_P) 2512ev_userdata (EV_P) EV_THROW
1471{ 2513{
1472 return userdata; 2514 return userdata;
1473} 2515}
1474 2516
2517void
1475void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2518ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1476{ 2519{
1477 invoke_cb = invoke_pending_cb; 2520 invoke_cb = invoke_pending_cb;
1478} 2521}
1479 2522
2523void
1480void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2524ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1481{ 2525{
1482 release_cb = release; 2526 release_cb = release;
1483 acquire_cb = acquire; 2527 acquire_cb = acquire;
1484} 2528}
1485#endif 2529#endif
1486 2530
1487/* initialise a loop structure, must be zero-initialised */ 2531/* initialise a loop structure, must be zero-initialised */
1488static void noinline 2532static void noinline ecb_cold
1489loop_init (EV_P_ unsigned int flags) 2533loop_init (EV_P_ unsigned int flags) EV_THROW
1490{ 2534{
1491 if (!backend) 2535 if (!backend)
1492 { 2536 {
2537 origflags = flags;
2538
1493#if EV_USE_REALTIME 2539#if EV_USE_REALTIME
1494 if (!have_realtime) 2540 if (!have_realtime)
1495 { 2541 {
1496 struct timespec ts; 2542 struct timespec ts;
1497 2543
… …
1508 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2554 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1509 have_monotonic = 1; 2555 have_monotonic = 1;
1510 } 2556 }
1511#endif 2557#endif
1512 2558
1513 ev_rt_now = ev_time ();
1514 mn_now = get_clock ();
1515 now_floor = mn_now;
1516 rtmn_diff = ev_rt_now - mn_now;
1517#if EV_MINIMAL < 2
1518 invoke_cb = ev_invoke_pending;
1519#endif
1520
1521 io_blocktime = 0.;
1522 timeout_blocktime = 0.;
1523 backend = 0;
1524 backend_fd = -1;
1525 gotasync = 0;
1526#if EV_USE_INOTIFY
1527 fs_fd = -2;
1528#endif
1529#if EV_USE_SIGNALFD
1530 sigfd = -2;
1531#endif
1532
1533 /* pid check not overridable via env */ 2559 /* pid check not overridable via env */
1534#ifndef _WIN32 2560#ifndef _WIN32
1535 if (flags & EVFLAG_FORKCHECK) 2561 if (flags & EVFLAG_FORKCHECK)
1536 curpid = getpid (); 2562 curpid = getpid ();
1537#endif 2563#endif
… …
1539 if (!(flags & EVFLAG_NOENV) 2565 if (!(flags & EVFLAG_NOENV)
1540 && !enable_secure () 2566 && !enable_secure ()
1541 && getenv ("LIBEV_FLAGS")) 2567 && getenv ("LIBEV_FLAGS"))
1542 flags = atoi (getenv ("LIBEV_FLAGS")); 2568 flags = atoi (getenv ("LIBEV_FLAGS"));
1543 2569
1544 if (!(flags & 0x0000ffffU)) 2570 ev_rt_now = ev_time ();
2571 mn_now = get_clock ();
2572 now_floor = mn_now;
2573 rtmn_diff = ev_rt_now - mn_now;
2574#if EV_FEATURE_API
2575 invoke_cb = ev_invoke_pending;
2576#endif
2577
2578 io_blocktime = 0.;
2579 timeout_blocktime = 0.;
2580 backend = 0;
2581 backend_fd = -1;
2582 sig_pending = 0;
2583#if EV_ASYNC_ENABLE
2584 async_pending = 0;
2585#endif
2586 pipe_write_skipped = 0;
2587 pipe_write_wanted = 0;
2588 evpipe [0] = -1;
2589 evpipe [1] = -1;
2590#if EV_USE_INOTIFY
2591 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2592#endif
2593#if EV_USE_SIGNALFD
2594 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2595#endif
2596
2597 if (!(flags & EVBACKEND_MASK))
1545 flags |= ev_recommended_backends (); 2598 flags |= ev_recommended_backends ();
1546 2599
2600#if EV_USE_IOCP
2601 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2602#endif
1547#if EV_USE_PORT 2603#if EV_USE_PORT
1548 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2604 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1549#endif 2605#endif
1550#if EV_USE_KQUEUE 2606#if EV_USE_KQUEUE
1551 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2607 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1560 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2616 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1561#endif 2617#endif
1562 2618
1563 ev_prepare_init (&pending_w, pendingcb); 2619 ev_prepare_init (&pending_w, pendingcb);
1564 2620
2621#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1565 ev_init (&pipe_w, pipecb); 2622 ev_init (&pipe_w, pipecb);
1566 ev_set_priority (&pipe_w, EV_MAXPRI); 2623 ev_set_priority (&pipe_w, EV_MAXPRI);
2624#endif
1567 } 2625 }
1568} 2626}
1569 2627
1570/* free up a loop structure */ 2628/* free up a loop structure */
1571static void noinline 2629void ecb_cold
1572loop_destroy (EV_P) 2630ev_loop_destroy (EV_P)
1573{ 2631{
1574 int i; 2632 int i;
2633
2634#if EV_MULTIPLICITY
2635 /* mimic free (0) */
2636 if (!EV_A)
2637 return;
2638#endif
2639
2640#if EV_CLEANUP_ENABLE
2641 /* queue cleanup watchers (and execute them) */
2642 if (expect_false (cleanupcnt))
2643 {
2644 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2645 EV_INVOKE_PENDING;
2646 }
2647#endif
2648
2649#if EV_CHILD_ENABLE
2650 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2651 {
2652 ev_ref (EV_A); /* child watcher */
2653 ev_signal_stop (EV_A_ &childev);
2654 }
2655#endif
1575 2656
1576 if (ev_is_active (&pipe_w)) 2657 if (ev_is_active (&pipe_w))
1577 { 2658 {
1578 /*ev_ref (EV_A);*/ 2659 /*ev_ref (EV_A);*/
1579 /*ev_io_stop (EV_A_ &pipe_w);*/ 2660 /*ev_io_stop (EV_A_ &pipe_w);*/
1580 2661
1581#if EV_USE_EVENTFD 2662 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1582 if (evfd >= 0) 2663 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1583 close (evfd);
1584#endif
1585
1586 if (evpipe [0] >= 0)
1587 {
1588 close (evpipe [0]);
1589 close (evpipe [1]);
1590 }
1591 } 2664 }
1592 2665
1593#if EV_USE_SIGNALFD 2666#if EV_USE_SIGNALFD
1594 if (ev_is_active (&sigfd_w)) 2667 if (ev_is_active (&sigfd_w))
1595 {
1596 /*ev_ref (EV_A);*/
1597 /*ev_io_stop (EV_A_ &sigfd_w);*/
1598
1599 close (sigfd); 2668 close (sigfd);
1600 }
1601#endif 2669#endif
1602 2670
1603#if EV_USE_INOTIFY 2671#if EV_USE_INOTIFY
1604 if (fs_fd >= 0) 2672 if (fs_fd >= 0)
1605 close (fs_fd); 2673 close (fs_fd);
1606#endif 2674#endif
1607 2675
1608 if (backend_fd >= 0) 2676 if (backend_fd >= 0)
1609 close (backend_fd); 2677 close (backend_fd);
1610 2678
2679#if EV_USE_IOCP
2680 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2681#endif
1611#if EV_USE_PORT 2682#if EV_USE_PORT
1612 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2683 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1613#endif 2684#endif
1614#if EV_USE_KQUEUE 2685#if EV_USE_KQUEUE
1615 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2686 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1630#if EV_IDLE_ENABLE 2701#if EV_IDLE_ENABLE
1631 array_free (idle, [i]); 2702 array_free (idle, [i]);
1632#endif 2703#endif
1633 } 2704 }
1634 2705
1635 ev_free (anfds); anfdmax = 0; 2706 ev_free (anfds); anfds = 0; anfdmax = 0;
1636 2707
1637 /* have to use the microsoft-never-gets-it-right macro */ 2708 /* have to use the microsoft-never-gets-it-right macro */
1638 array_free (rfeed, EMPTY); 2709 array_free (rfeed, EMPTY);
1639 array_free (fdchange, EMPTY); 2710 array_free (fdchange, EMPTY);
1640 array_free (timer, EMPTY); 2711 array_free (timer, EMPTY);
… …
1642 array_free (periodic, EMPTY); 2713 array_free (periodic, EMPTY);
1643#endif 2714#endif
1644#if EV_FORK_ENABLE 2715#if EV_FORK_ENABLE
1645 array_free (fork, EMPTY); 2716 array_free (fork, EMPTY);
1646#endif 2717#endif
2718#if EV_CLEANUP_ENABLE
2719 array_free (cleanup, EMPTY);
2720#endif
1647 array_free (prepare, EMPTY); 2721 array_free (prepare, EMPTY);
1648 array_free (check, EMPTY); 2722 array_free (check, EMPTY);
1649#if EV_ASYNC_ENABLE 2723#if EV_ASYNC_ENABLE
1650 array_free (async, EMPTY); 2724 array_free (async, EMPTY);
1651#endif 2725#endif
1652 2726
1653 backend = 0; 2727 backend = 0;
2728
2729#if EV_MULTIPLICITY
2730 if (ev_is_default_loop (EV_A))
2731#endif
2732 ev_default_loop_ptr = 0;
2733#if EV_MULTIPLICITY
2734 else
2735 ev_free (EV_A);
2736#endif
1654} 2737}
1655 2738
1656#if EV_USE_INOTIFY 2739#if EV_USE_INOTIFY
1657inline_size void infy_fork (EV_P); 2740inline_size void infy_fork (EV_P);
1658#endif 2741#endif
… …
1671#endif 2754#endif
1672#if EV_USE_INOTIFY 2755#if EV_USE_INOTIFY
1673 infy_fork (EV_A); 2756 infy_fork (EV_A);
1674#endif 2757#endif
1675 2758
2759#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1676 if (ev_is_active (&pipe_w)) 2760 if (ev_is_active (&pipe_w))
1677 { 2761 {
1678 /* this "locks" the handlers against writing to the pipe */ 2762 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1679 /* while we modify the fd vars */
1680 gotsig = 1;
1681#if EV_ASYNC_ENABLE
1682 gotasync = 1;
1683#endif
1684 2763
1685 ev_ref (EV_A); 2764 ev_ref (EV_A);
1686 ev_io_stop (EV_A_ &pipe_w); 2765 ev_io_stop (EV_A_ &pipe_w);
1687 2766
1688#if EV_USE_EVENTFD
1689 if (evfd >= 0)
1690 close (evfd);
1691#endif
1692
1693 if (evpipe [0] >= 0) 2767 if (evpipe [0] >= 0)
1694 { 2768 EV_WIN32_CLOSE_FD (evpipe [0]);
1695 close (evpipe [0]);
1696 close (evpipe [1]);
1697 }
1698 2769
1699 evpipe_init (EV_A); 2770 evpipe_init (EV_A);
1700 /* now iterate over everything, in case we missed something */ 2771 /* iterate over everything, in case we missed something before */
1701 pipecb (EV_A_ &pipe_w, EV_READ); 2772 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1702 } 2773 }
2774#endif
1703 2775
1704 postfork = 0; 2776 postfork = 0;
1705} 2777}
1706 2778
1707#if EV_MULTIPLICITY 2779#if EV_MULTIPLICITY
1708 2780
1709struct ev_loop * 2781struct ev_loop * ecb_cold
1710ev_loop_new (unsigned int flags) 2782ev_loop_new (unsigned int flags) EV_THROW
1711{ 2783{
1712 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2784 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1713 2785
1714 memset (loop, 0, sizeof (struct ev_loop)); 2786 memset (EV_A, 0, sizeof (struct ev_loop));
1715 loop_init (EV_A_ flags); 2787 loop_init (EV_A_ flags);
1716 2788
1717 if (ev_backend (EV_A)) 2789 if (ev_backend (EV_A))
1718 return loop; 2790 return EV_A;
1719 2791
2792 ev_free (EV_A);
1720 return 0; 2793 return 0;
1721} 2794}
1722 2795
1723void
1724ev_loop_destroy (EV_P)
1725{
1726 loop_destroy (EV_A);
1727 ev_free (loop);
1728}
1729
1730void
1731ev_loop_fork (EV_P)
1732{
1733 postfork = 1; /* must be in line with ev_default_fork */
1734}
1735#endif /* multiplicity */ 2796#endif /* multiplicity */
1736 2797
1737#if EV_VERIFY 2798#if EV_VERIFY
1738static void noinline 2799static void noinline ecb_cold
1739verify_watcher (EV_P_ W w) 2800verify_watcher (EV_P_ W w)
1740{ 2801{
1741 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2802 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1742 2803
1743 if (w->pending) 2804 if (w->pending)
1744 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2805 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1745} 2806}
1746 2807
1747static void noinline 2808static void noinline ecb_cold
1748verify_heap (EV_P_ ANHE *heap, int N) 2809verify_heap (EV_P_ ANHE *heap, int N)
1749{ 2810{
1750 int i; 2811 int i;
1751 2812
1752 for (i = HEAP0; i < N + HEAP0; ++i) 2813 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1757 2818
1758 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2819 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1759 } 2820 }
1760} 2821}
1761 2822
1762static void noinline 2823static void noinline ecb_cold
1763array_verify (EV_P_ W *ws, int cnt) 2824array_verify (EV_P_ W *ws, int cnt)
1764{ 2825{
1765 while (cnt--) 2826 while (cnt--)
1766 { 2827 {
1767 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2828 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1768 verify_watcher (EV_A_ ws [cnt]); 2829 verify_watcher (EV_A_ ws [cnt]);
1769 } 2830 }
1770} 2831}
1771#endif 2832#endif
1772 2833
1773#if EV_MINIMAL < 2 2834#if EV_FEATURE_API
1774void 2835void ecb_cold
1775ev_loop_verify (EV_P) 2836ev_verify (EV_P) EV_THROW
1776{ 2837{
1777#if EV_VERIFY 2838#if EV_VERIFY
1778 int i; 2839 int i;
1779 WL w; 2840 WL w, w2;
1780 2841
1781 assert (activecnt >= -1); 2842 assert (activecnt >= -1);
1782 2843
1783 assert (fdchangemax >= fdchangecnt); 2844 assert (fdchangemax >= fdchangecnt);
1784 for (i = 0; i < fdchangecnt; ++i) 2845 for (i = 0; i < fdchangecnt; ++i)
1785 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2846 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1786 2847
1787 assert (anfdmax >= 0); 2848 assert (anfdmax >= 0);
1788 for (i = 0; i < anfdmax; ++i) 2849 for (i = 0; i < anfdmax; ++i)
2850 {
2851 int j = 0;
2852
1789 for (w = anfds [i].head; w; w = w->next) 2853 for (w = w2 = anfds [i].head; w; w = w->next)
1790 { 2854 {
1791 verify_watcher (EV_A_ (W)w); 2855 verify_watcher (EV_A_ (W)w);
2856
2857 if (j++ & 1)
2858 {
2859 assert (("libev: io watcher list contains a loop", w != w2));
2860 w2 = w2->next;
2861 }
2862
1792 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2863 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1793 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2864 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1794 } 2865 }
2866 }
1795 2867
1796 assert (timermax >= timercnt); 2868 assert (timermax >= timercnt);
1797 verify_heap (EV_A_ timers, timercnt); 2869 verify_heap (EV_A_ timers, timercnt);
1798 2870
1799#if EV_PERIODIC_ENABLE 2871#if EV_PERIODIC_ENABLE
… …
1814#if EV_FORK_ENABLE 2886#if EV_FORK_ENABLE
1815 assert (forkmax >= forkcnt); 2887 assert (forkmax >= forkcnt);
1816 array_verify (EV_A_ (W *)forks, forkcnt); 2888 array_verify (EV_A_ (W *)forks, forkcnt);
1817#endif 2889#endif
1818 2890
2891#if EV_CLEANUP_ENABLE
2892 assert (cleanupmax >= cleanupcnt);
2893 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2894#endif
2895
1819#if EV_ASYNC_ENABLE 2896#if EV_ASYNC_ENABLE
1820 assert (asyncmax >= asynccnt); 2897 assert (asyncmax >= asynccnt);
1821 array_verify (EV_A_ (W *)asyncs, asynccnt); 2898 array_verify (EV_A_ (W *)asyncs, asynccnt);
1822#endif 2899#endif
1823 2900
2901#if EV_PREPARE_ENABLE
1824 assert (preparemax >= preparecnt); 2902 assert (preparemax >= preparecnt);
1825 array_verify (EV_A_ (W *)prepares, preparecnt); 2903 array_verify (EV_A_ (W *)prepares, preparecnt);
2904#endif
1826 2905
2906#if EV_CHECK_ENABLE
1827 assert (checkmax >= checkcnt); 2907 assert (checkmax >= checkcnt);
1828 array_verify (EV_A_ (W *)checks, checkcnt); 2908 array_verify (EV_A_ (W *)checks, checkcnt);
2909#endif
1829 2910
1830# if 0 2911# if 0
2912#if EV_CHILD_ENABLE
1831 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2913 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1832 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2914 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2915#endif
1833# endif 2916# endif
1834#endif 2917#endif
1835} 2918}
1836#endif 2919#endif
1837 2920
1838#if EV_MULTIPLICITY 2921#if EV_MULTIPLICITY
1839struct ev_loop * 2922struct ev_loop * ecb_cold
1840ev_default_loop_init (unsigned int flags)
1841#else 2923#else
1842int 2924int
2925#endif
1843ev_default_loop (unsigned int flags) 2926ev_default_loop (unsigned int flags) EV_THROW
1844#endif
1845{ 2927{
1846 if (!ev_default_loop_ptr) 2928 if (!ev_default_loop_ptr)
1847 { 2929 {
1848#if EV_MULTIPLICITY 2930#if EV_MULTIPLICITY
1849 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2931 EV_P = ev_default_loop_ptr = &default_loop_struct;
1850#else 2932#else
1851 ev_default_loop_ptr = 1; 2933 ev_default_loop_ptr = 1;
1852#endif 2934#endif
1853 2935
1854 loop_init (EV_A_ flags); 2936 loop_init (EV_A_ flags);
1855 2937
1856 if (ev_backend (EV_A)) 2938 if (ev_backend (EV_A))
1857 { 2939 {
1858#ifndef _WIN32 2940#if EV_CHILD_ENABLE
1859 ev_signal_init (&childev, childcb, SIGCHLD); 2941 ev_signal_init (&childev, childcb, SIGCHLD);
1860 ev_set_priority (&childev, EV_MAXPRI); 2942 ev_set_priority (&childev, EV_MAXPRI);
1861 ev_signal_start (EV_A_ &childev); 2943 ev_signal_start (EV_A_ &childev);
1862 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2944 ev_unref (EV_A); /* child watcher should not keep loop alive */
1863#endif 2945#endif
… …
1868 2950
1869 return ev_default_loop_ptr; 2951 return ev_default_loop_ptr;
1870} 2952}
1871 2953
1872void 2954void
1873ev_default_destroy (void) 2955ev_loop_fork (EV_P) EV_THROW
1874{ 2956{
1875#if EV_MULTIPLICITY 2957 postfork = 1;
1876 struct ev_loop *loop = ev_default_loop_ptr;
1877#endif
1878
1879 ev_default_loop_ptr = 0;
1880
1881#ifndef _WIN32
1882 ev_ref (EV_A); /* child watcher */
1883 ev_signal_stop (EV_A_ &childev);
1884#endif
1885
1886 loop_destroy (EV_A);
1887}
1888
1889void
1890ev_default_fork (void)
1891{
1892#if EV_MULTIPLICITY
1893 struct ev_loop *loop = ev_default_loop_ptr;
1894#endif
1895
1896 postfork = 1; /* must be in line with ev_loop_fork */
1897} 2958}
1898 2959
1899/*****************************************************************************/ 2960/*****************************************************************************/
1900 2961
1901void 2962void
… …
1903{ 2964{
1904 EV_CB_INVOKE ((W)w, revents); 2965 EV_CB_INVOKE ((W)w, revents);
1905} 2966}
1906 2967
1907unsigned int 2968unsigned int
1908ev_pending_count (EV_P) 2969ev_pending_count (EV_P) EV_THROW
1909{ 2970{
1910 int pri; 2971 int pri;
1911 unsigned int count = 0; 2972 unsigned int count = 0;
1912 2973
1913 for (pri = NUMPRI; pri--; ) 2974 for (pri = NUMPRI; pri--; )
… …
1917} 2978}
1918 2979
1919void noinline 2980void noinline
1920ev_invoke_pending (EV_P) 2981ev_invoke_pending (EV_P)
1921{ 2982{
1922 int pri; 2983 pendingpri = NUMPRI;
1923 2984
1924 for (pri = NUMPRI; pri--; ) 2985 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2986 {
2987 --pendingpri;
2988
1925 while (pendingcnt [pri]) 2989 while (pendingcnt [pendingpri])
1926 { 2990 {
1927 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2991 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1928 2992
1929 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1930 /* ^ this is no longer true, as pending_w could be here */
1931
1932 p->w->pending = 0; 2993 p->w->pending = 0;
1933 EV_CB_INVOKE (p->w, p->events); 2994 EV_CB_INVOKE (p->w, p->events);
1934 EV_FREQUENT_CHECK; 2995 EV_FREQUENT_CHECK;
1935 } 2996 }
2997 }
1936} 2998}
1937 2999
1938#if EV_IDLE_ENABLE 3000#if EV_IDLE_ENABLE
1939/* make idle watchers pending. this handles the "call-idle */ 3001/* make idle watchers pending. this handles the "call-idle */
1940/* only when higher priorities are idle" logic */ 3002/* only when higher priorities are idle" logic */
… …
1992 EV_FREQUENT_CHECK; 3054 EV_FREQUENT_CHECK;
1993 feed_reverse (EV_A_ (W)w); 3055 feed_reverse (EV_A_ (W)w);
1994 } 3056 }
1995 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3057 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1996 3058
1997 feed_reverse_done (EV_A_ EV_TIMEOUT); 3059 feed_reverse_done (EV_A_ EV_TIMER);
1998 } 3060 }
1999} 3061}
2000 3062
2001#if EV_PERIODIC_ENABLE 3063#if EV_PERIODIC_ENABLE
3064
3065static void noinline
3066periodic_recalc (EV_P_ ev_periodic *w)
3067{
3068 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3069 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3070
3071 /* the above almost always errs on the low side */
3072 while (at <= ev_rt_now)
3073 {
3074 ev_tstamp nat = at + w->interval;
3075
3076 /* when resolution fails us, we use ev_rt_now */
3077 if (expect_false (nat == at))
3078 {
3079 at = ev_rt_now;
3080 break;
3081 }
3082
3083 at = nat;
3084 }
3085
3086 ev_at (w) = at;
3087}
3088
2002/* make periodics pending */ 3089/* make periodics pending */
2003inline_size void 3090inline_size void
2004periodics_reify (EV_P) 3091periodics_reify (EV_P)
2005{ 3092{
2006 EV_FREQUENT_CHECK; 3093 EV_FREQUENT_CHECK;
2007 3094
2008 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3095 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2009 { 3096 {
2010 int feed_count = 0;
2011
2012 do 3097 do
2013 { 3098 {
2014 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3099 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2015 3100
2016 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3101 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2025 ANHE_at_cache (periodics [HEAP0]); 3110 ANHE_at_cache (periodics [HEAP0]);
2026 downheap (periodics, periodiccnt, HEAP0); 3111 downheap (periodics, periodiccnt, HEAP0);
2027 } 3112 }
2028 else if (w->interval) 3113 else if (w->interval)
2029 { 3114 {
2030 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3115 periodic_recalc (EV_A_ w);
2031 /* if next trigger time is not sufficiently in the future, put it there */
2032 /* this might happen because of floating point inexactness */
2033 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2034 {
2035 ev_at (w) += w->interval;
2036
2037 /* if interval is unreasonably low we might still have a time in the past */
2038 /* so correct this. this will make the periodic very inexact, but the user */
2039 /* has effectively asked to get triggered more often than possible */
2040 if (ev_at (w) < ev_rt_now)
2041 ev_at (w) = ev_rt_now;
2042 }
2043
2044 ANHE_at_cache (periodics [HEAP0]); 3116 ANHE_at_cache (periodics [HEAP0]);
2045 downheap (periodics, periodiccnt, HEAP0); 3117 downheap (periodics, periodiccnt, HEAP0);
2046 } 3118 }
2047 else 3119 else
2048 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3120 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2055 feed_reverse_done (EV_A_ EV_PERIODIC); 3127 feed_reverse_done (EV_A_ EV_PERIODIC);
2056 } 3128 }
2057} 3129}
2058 3130
2059/* simply recalculate all periodics */ 3131/* simply recalculate all periodics */
2060/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3132/* TODO: maybe ensure that at least one event happens when jumping forward? */
2061static void noinline 3133static void noinline ecb_cold
2062periodics_reschedule (EV_P) 3134periodics_reschedule (EV_P)
2063{ 3135{
2064 int i; 3136 int i;
2065 3137
2066 /* adjust periodics after time jump */ 3138 /* adjust periodics after time jump */
… …
2069 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3141 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2070 3142
2071 if (w->reschedule_cb) 3143 if (w->reschedule_cb)
2072 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3144 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2073 else if (w->interval) 3145 else if (w->interval)
2074 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3146 periodic_recalc (EV_A_ w);
2075 3147
2076 ANHE_at_cache (periodics [i]); 3148 ANHE_at_cache (periodics [i]);
2077 } 3149 }
2078 3150
2079 reheap (periodics, periodiccnt); 3151 reheap (periodics, periodiccnt);
2080} 3152}
2081#endif 3153#endif
2082 3154
2083/* adjust all timers by a given offset */ 3155/* adjust all timers by a given offset */
2084static void noinline 3156static void noinline ecb_cold
2085timers_reschedule (EV_P_ ev_tstamp adjust) 3157timers_reschedule (EV_P_ ev_tstamp adjust)
2086{ 3158{
2087 int i; 3159 int i;
2088 3160
2089 for (i = 0; i < timercnt; ++i) 3161 for (i = 0; i < timercnt; ++i)
… …
2093 ANHE_at_cache (*he); 3165 ANHE_at_cache (*he);
2094 } 3166 }
2095} 3167}
2096 3168
2097/* fetch new monotonic and realtime times from the kernel */ 3169/* fetch new monotonic and realtime times from the kernel */
2098/* also detetc if there was a timejump, and act accordingly */ 3170/* also detect if there was a timejump, and act accordingly */
2099inline_speed void 3171inline_speed void
2100time_update (EV_P_ ev_tstamp max_block) 3172time_update (EV_P_ ev_tstamp max_block)
2101{ 3173{
2102#if EV_USE_MONOTONIC 3174#if EV_USE_MONOTONIC
2103 if (expect_true (have_monotonic)) 3175 if (expect_true (have_monotonic))
… …
2126 * doesn't hurt either as we only do this on time-jumps or 3198 * doesn't hurt either as we only do this on time-jumps or
2127 * in the unlikely event of having been preempted here. 3199 * in the unlikely event of having been preempted here.
2128 */ 3200 */
2129 for (i = 4; --i; ) 3201 for (i = 4; --i; )
2130 { 3202 {
3203 ev_tstamp diff;
2131 rtmn_diff = ev_rt_now - mn_now; 3204 rtmn_diff = ev_rt_now - mn_now;
2132 3205
3206 diff = odiff - rtmn_diff;
3207
2133 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3208 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2134 return; /* all is well */ 3209 return; /* all is well */
2135 3210
2136 ev_rt_now = ev_time (); 3211 ev_rt_now = ev_time ();
2137 mn_now = get_clock (); 3212 mn_now = get_clock ();
2138 now_floor = mn_now; 3213 now_floor = mn_now;
… …
2160 3235
2161 mn_now = ev_rt_now; 3236 mn_now = ev_rt_now;
2162 } 3237 }
2163} 3238}
2164 3239
2165void 3240int
2166ev_loop (EV_P_ int flags) 3241ev_run (EV_P_ int flags)
2167{ 3242{
2168#if EV_MINIMAL < 2 3243#if EV_FEATURE_API
2169 ++loop_depth; 3244 ++loop_depth;
2170#endif 3245#endif
2171 3246
2172 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3247 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2173 3248
2174 loop_done = EVUNLOOP_CANCEL; 3249 loop_done = EVBREAK_CANCEL;
2175 3250
2176 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3251 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2177 3252
2178 do 3253 do
2179 { 3254 {
2180#if EV_VERIFY >= 2 3255#if EV_VERIFY >= 2
2181 ev_loop_verify (EV_A); 3256 ev_verify (EV_A);
2182#endif 3257#endif
2183 3258
2184#ifndef _WIN32 3259#ifndef _WIN32
2185 if (expect_false (curpid)) /* penalise the forking check even more */ 3260 if (expect_false (curpid)) /* penalise the forking check even more */
2186 if (expect_false (getpid () != curpid)) 3261 if (expect_false (getpid () != curpid))
… …
2198 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3273 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2199 EV_INVOKE_PENDING; 3274 EV_INVOKE_PENDING;
2200 } 3275 }
2201#endif 3276#endif
2202 3277
3278#if EV_PREPARE_ENABLE
2203 /* queue prepare watchers (and execute them) */ 3279 /* queue prepare watchers (and execute them) */
2204 if (expect_false (preparecnt)) 3280 if (expect_false (preparecnt))
2205 { 3281 {
2206 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3282 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2207 EV_INVOKE_PENDING; 3283 EV_INVOKE_PENDING;
2208 } 3284 }
3285#endif
2209 3286
2210 if (expect_false (loop_done)) 3287 if (expect_false (loop_done))
2211 break; 3288 break;
2212 3289
2213 /* we might have forked, so reify kernel state if necessary */ 3290 /* we might have forked, so reify kernel state if necessary */
… …
2220 /* calculate blocking time */ 3297 /* calculate blocking time */
2221 { 3298 {
2222 ev_tstamp waittime = 0.; 3299 ev_tstamp waittime = 0.;
2223 ev_tstamp sleeptime = 0.; 3300 ev_tstamp sleeptime = 0.;
2224 3301
3302 /* remember old timestamp for io_blocktime calculation */
3303 ev_tstamp prev_mn_now = mn_now;
3304
3305 /* update time to cancel out callback processing overhead */
3306 time_update (EV_A_ 1e100);
3307
3308 /* from now on, we want a pipe-wake-up */
3309 pipe_write_wanted = 1;
3310
3311 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3312
2225 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3313 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2226 { 3314 {
2227 /* remember old timestamp for io_blocktime calculation */
2228 ev_tstamp prev_mn_now = mn_now;
2229
2230 /* update time to cancel out callback processing overhead */
2231 time_update (EV_A_ 1e100);
2232
2233 waittime = MAX_BLOCKTIME; 3315 waittime = MAX_BLOCKTIME;
2234 3316
2235 if (timercnt) 3317 if (timercnt)
2236 { 3318 {
2237 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3319 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2238 if (waittime > to) waittime = to; 3320 if (waittime > to) waittime = to;
2239 } 3321 }
2240 3322
2241#if EV_PERIODIC_ENABLE 3323#if EV_PERIODIC_ENABLE
2242 if (periodiccnt) 3324 if (periodiccnt)
2243 { 3325 {
2244 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3326 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2245 if (waittime > to) waittime = to; 3327 if (waittime > to) waittime = to;
2246 } 3328 }
2247#endif 3329#endif
2248 3330
2249 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3331 /* don't let timeouts decrease the waittime below timeout_blocktime */
2250 if (expect_false (waittime < timeout_blocktime)) 3332 if (expect_false (waittime < timeout_blocktime))
2251 waittime = timeout_blocktime; 3333 waittime = timeout_blocktime;
3334
3335 /* at this point, we NEED to wait, so we have to ensure */
3336 /* to pass a minimum nonzero value to the backend */
3337 if (expect_false (waittime < backend_mintime))
3338 waittime = backend_mintime;
2252 3339
2253 /* extra check because io_blocktime is commonly 0 */ 3340 /* extra check because io_blocktime is commonly 0 */
2254 if (expect_false (io_blocktime)) 3341 if (expect_false (io_blocktime))
2255 { 3342 {
2256 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3343 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2257 3344
2258 if (sleeptime > waittime - backend_fudge) 3345 if (sleeptime > waittime - backend_mintime)
2259 sleeptime = waittime - backend_fudge; 3346 sleeptime = waittime - backend_mintime;
2260 3347
2261 if (expect_true (sleeptime > 0.)) 3348 if (expect_true (sleeptime > 0.))
2262 { 3349 {
2263 ev_sleep (sleeptime); 3350 ev_sleep (sleeptime);
2264 waittime -= sleeptime; 3351 waittime -= sleeptime;
2265 } 3352 }
2266 } 3353 }
2267 } 3354 }
2268 3355
2269#if EV_MINIMAL < 2 3356#if EV_FEATURE_API
2270 ++loop_count; 3357 ++loop_count;
2271#endif 3358#endif
2272 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3359 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2273 backend_poll (EV_A_ waittime); 3360 backend_poll (EV_A_ waittime);
2274 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3361 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3362
3363 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3364
3365 ECB_MEMORY_FENCE_ACQUIRE;
3366 if (pipe_write_skipped)
3367 {
3368 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3369 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3370 }
3371
2275 3372
2276 /* update ev_rt_now, do magic */ 3373 /* update ev_rt_now, do magic */
2277 time_update (EV_A_ waittime + sleeptime); 3374 time_update (EV_A_ waittime + sleeptime);
2278 } 3375 }
2279 3376
… …
2286#if EV_IDLE_ENABLE 3383#if EV_IDLE_ENABLE
2287 /* queue idle watchers unless other events are pending */ 3384 /* queue idle watchers unless other events are pending */
2288 idle_reify (EV_A); 3385 idle_reify (EV_A);
2289#endif 3386#endif
2290 3387
3388#if EV_CHECK_ENABLE
2291 /* queue check watchers, to be executed first */ 3389 /* queue check watchers, to be executed first */
2292 if (expect_false (checkcnt)) 3390 if (expect_false (checkcnt))
2293 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3391 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3392#endif
2294 3393
2295 EV_INVOKE_PENDING; 3394 EV_INVOKE_PENDING;
2296 } 3395 }
2297 while (expect_true ( 3396 while (expect_true (
2298 activecnt 3397 activecnt
2299 && !loop_done 3398 && !loop_done
2300 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3399 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2301 )); 3400 ));
2302 3401
2303 if (loop_done == EVUNLOOP_ONE) 3402 if (loop_done == EVBREAK_ONE)
2304 loop_done = EVUNLOOP_CANCEL; 3403 loop_done = EVBREAK_CANCEL;
2305 3404
2306#if EV_MINIMAL < 2 3405#if EV_FEATURE_API
2307 --loop_depth; 3406 --loop_depth;
2308#endif 3407#endif
3408
3409 return activecnt;
2309} 3410}
2310 3411
2311void 3412void
2312ev_unloop (EV_P_ int how) 3413ev_break (EV_P_ int how) EV_THROW
2313{ 3414{
2314 loop_done = how; 3415 loop_done = how;
2315} 3416}
2316 3417
2317void 3418void
2318ev_ref (EV_P) 3419ev_ref (EV_P) EV_THROW
2319{ 3420{
2320 ++activecnt; 3421 ++activecnt;
2321} 3422}
2322 3423
2323void 3424void
2324ev_unref (EV_P) 3425ev_unref (EV_P) EV_THROW
2325{ 3426{
2326 --activecnt; 3427 --activecnt;
2327} 3428}
2328 3429
2329void 3430void
2330ev_now_update (EV_P) 3431ev_now_update (EV_P) EV_THROW
2331{ 3432{
2332 time_update (EV_A_ 1e100); 3433 time_update (EV_A_ 1e100);
2333} 3434}
2334 3435
2335void 3436void
2336ev_suspend (EV_P) 3437ev_suspend (EV_P) EV_THROW
2337{ 3438{
2338 ev_now_update (EV_A); 3439 ev_now_update (EV_A);
2339} 3440}
2340 3441
2341void 3442void
2342ev_resume (EV_P) 3443ev_resume (EV_P) EV_THROW
2343{ 3444{
2344 ev_tstamp mn_prev = mn_now; 3445 ev_tstamp mn_prev = mn_now;
2345 3446
2346 ev_now_update (EV_A); 3447 ev_now_update (EV_A);
2347 timers_reschedule (EV_A_ mn_now - mn_prev); 3448 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2364inline_size void 3465inline_size void
2365wlist_del (WL *head, WL elem) 3466wlist_del (WL *head, WL elem)
2366{ 3467{
2367 while (*head) 3468 while (*head)
2368 { 3469 {
2369 if (*head == elem) 3470 if (expect_true (*head == elem))
2370 { 3471 {
2371 *head = elem->next; 3472 *head = elem->next;
2372 return; 3473 break;
2373 } 3474 }
2374 3475
2375 head = &(*head)->next; 3476 head = &(*head)->next;
2376 } 3477 }
2377} 3478}
… …
2386 w->pending = 0; 3487 w->pending = 0;
2387 } 3488 }
2388} 3489}
2389 3490
2390int 3491int
2391ev_clear_pending (EV_P_ void *w) 3492ev_clear_pending (EV_P_ void *w) EV_THROW
2392{ 3493{
2393 W w_ = (W)w; 3494 W w_ = (W)w;
2394 int pending = w_->pending; 3495 int pending = w_->pending;
2395 3496
2396 if (expect_true (pending)) 3497 if (expect_true (pending))
… …
2429} 3530}
2430 3531
2431/*****************************************************************************/ 3532/*****************************************************************************/
2432 3533
2433void noinline 3534void noinline
2434ev_io_start (EV_P_ ev_io *w) 3535ev_io_start (EV_P_ ev_io *w) EV_THROW
2435{ 3536{
2436 int fd = w->fd; 3537 int fd = w->fd;
2437 3538
2438 if (expect_false (ev_is_active (w))) 3539 if (expect_false (ev_is_active (w)))
2439 return; 3540 return;
2440 3541
2441 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3542 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2442 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3543 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2443 3544
2444 EV_FREQUENT_CHECK; 3545 EV_FREQUENT_CHECK;
2445 3546
2446 ev_start (EV_A_ (W)w, 1); 3547 ev_start (EV_A_ (W)w, 1);
2447 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3548 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2448 wlist_add (&anfds[fd].head, (WL)w); 3549 wlist_add (&anfds[fd].head, (WL)w);
2449 3550
3551 /* common bug, apparently */
3552 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3553
2450 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3554 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2451 w->events &= ~EV__IOFDSET; 3555 w->events &= ~EV__IOFDSET;
2452 3556
2453 EV_FREQUENT_CHECK; 3557 EV_FREQUENT_CHECK;
2454} 3558}
2455 3559
2456void noinline 3560void noinline
2457ev_io_stop (EV_P_ ev_io *w) 3561ev_io_stop (EV_P_ ev_io *w) EV_THROW
2458{ 3562{
2459 clear_pending (EV_A_ (W)w); 3563 clear_pending (EV_A_ (W)w);
2460 if (expect_false (!ev_is_active (w))) 3564 if (expect_false (!ev_is_active (w)))
2461 return; 3565 return;
2462 3566
… …
2465 EV_FREQUENT_CHECK; 3569 EV_FREQUENT_CHECK;
2466 3570
2467 wlist_del (&anfds[w->fd].head, (WL)w); 3571 wlist_del (&anfds[w->fd].head, (WL)w);
2468 ev_stop (EV_A_ (W)w); 3572 ev_stop (EV_A_ (W)w);
2469 3573
2470 fd_change (EV_A_ w->fd, 1); 3574 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2471 3575
2472 EV_FREQUENT_CHECK; 3576 EV_FREQUENT_CHECK;
2473} 3577}
2474 3578
2475void noinline 3579void noinline
2476ev_timer_start (EV_P_ ev_timer *w) 3580ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2477{ 3581{
2478 if (expect_false (ev_is_active (w))) 3582 if (expect_false (ev_is_active (w)))
2479 return; 3583 return;
2480 3584
2481 ev_at (w) += mn_now; 3585 ev_at (w) += mn_now;
… …
2495 3599
2496 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3600 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2497} 3601}
2498 3602
2499void noinline 3603void noinline
2500ev_timer_stop (EV_P_ ev_timer *w) 3604ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2501{ 3605{
2502 clear_pending (EV_A_ (W)w); 3606 clear_pending (EV_A_ (W)w);
2503 if (expect_false (!ev_is_active (w))) 3607 if (expect_false (!ev_is_active (w)))
2504 return; 3608 return;
2505 3609
… …
2517 timers [active] = timers [timercnt + HEAP0]; 3621 timers [active] = timers [timercnt + HEAP0];
2518 adjustheap (timers, timercnt, active); 3622 adjustheap (timers, timercnt, active);
2519 } 3623 }
2520 } 3624 }
2521 3625
2522 EV_FREQUENT_CHECK;
2523
2524 ev_at (w) -= mn_now; 3626 ev_at (w) -= mn_now;
2525 3627
2526 ev_stop (EV_A_ (W)w); 3628 ev_stop (EV_A_ (W)w);
3629
3630 EV_FREQUENT_CHECK;
2527} 3631}
2528 3632
2529void noinline 3633void noinline
2530ev_timer_again (EV_P_ ev_timer *w) 3634ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2531{ 3635{
2532 EV_FREQUENT_CHECK; 3636 EV_FREQUENT_CHECK;
3637
3638 clear_pending (EV_A_ (W)w);
2533 3639
2534 if (ev_is_active (w)) 3640 if (ev_is_active (w))
2535 { 3641 {
2536 if (w->repeat) 3642 if (w->repeat)
2537 { 3643 {
… …
2550 3656
2551 EV_FREQUENT_CHECK; 3657 EV_FREQUENT_CHECK;
2552} 3658}
2553 3659
2554ev_tstamp 3660ev_tstamp
2555ev_timer_remaining (EV_P_ ev_timer *w) 3661ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2556{ 3662{
2557 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3663 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2558} 3664}
2559 3665
2560#if EV_PERIODIC_ENABLE 3666#if EV_PERIODIC_ENABLE
2561void noinline 3667void noinline
2562ev_periodic_start (EV_P_ ev_periodic *w) 3668ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2563{ 3669{
2564 if (expect_false (ev_is_active (w))) 3670 if (expect_false (ev_is_active (w)))
2565 return; 3671 return;
2566 3672
2567 if (w->reschedule_cb) 3673 if (w->reschedule_cb)
2568 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3674 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2569 else if (w->interval) 3675 else if (w->interval)
2570 { 3676 {
2571 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3677 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2572 /* this formula differs from the one in periodic_reify because we do not always round up */ 3678 periodic_recalc (EV_A_ w);
2573 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2574 } 3679 }
2575 else 3680 else
2576 ev_at (w) = w->offset; 3681 ev_at (w) = w->offset;
2577 3682
2578 EV_FREQUENT_CHECK; 3683 EV_FREQUENT_CHECK;
… …
2588 3693
2589 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3694 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2590} 3695}
2591 3696
2592void noinline 3697void noinline
2593ev_periodic_stop (EV_P_ ev_periodic *w) 3698ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2594{ 3699{
2595 clear_pending (EV_A_ (W)w); 3700 clear_pending (EV_A_ (W)w);
2596 if (expect_false (!ev_is_active (w))) 3701 if (expect_false (!ev_is_active (w)))
2597 return; 3702 return;
2598 3703
… …
2610 periodics [active] = periodics [periodiccnt + HEAP0]; 3715 periodics [active] = periodics [periodiccnt + HEAP0];
2611 adjustheap (periodics, periodiccnt, active); 3716 adjustheap (periodics, periodiccnt, active);
2612 } 3717 }
2613 } 3718 }
2614 3719
2615 EV_FREQUENT_CHECK;
2616
2617 ev_stop (EV_A_ (W)w); 3720 ev_stop (EV_A_ (W)w);
3721
3722 EV_FREQUENT_CHECK;
2618} 3723}
2619 3724
2620void noinline 3725void noinline
2621ev_periodic_again (EV_P_ ev_periodic *w) 3726ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2622{ 3727{
2623 /* TODO: use adjustheap and recalculation */ 3728 /* TODO: use adjustheap and recalculation */
2624 ev_periodic_stop (EV_A_ w); 3729 ev_periodic_stop (EV_A_ w);
2625 ev_periodic_start (EV_A_ w); 3730 ev_periodic_start (EV_A_ w);
2626} 3731}
… …
2628 3733
2629#ifndef SA_RESTART 3734#ifndef SA_RESTART
2630# define SA_RESTART 0 3735# define SA_RESTART 0
2631#endif 3736#endif
2632 3737
3738#if EV_SIGNAL_ENABLE
3739
2633void noinline 3740void noinline
2634ev_signal_start (EV_P_ ev_signal *w) 3741ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2635{ 3742{
2636#if EV_MULTIPLICITY
2637 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2638#endif
2639 if (expect_false (ev_is_active (w))) 3743 if (expect_false (ev_is_active (w)))
2640 return; 3744 return;
2641 3745
2642 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3746 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3747
3748#if EV_MULTIPLICITY
3749 assert (("libev: a signal must not be attached to two different loops",
3750 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3751
3752 signals [w->signum - 1].loop = EV_A;
3753 ECB_MEMORY_FENCE_RELEASE;
3754#endif
2643 3755
2644 EV_FREQUENT_CHECK; 3756 EV_FREQUENT_CHECK;
2645 3757
2646#if EV_USE_SIGNALFD 3758#if EV_USE_SIGNALFD
2647 if (sigfd == -2) 3759 if (sigfd == -2)
… …
2669 sigaddset (&sigfd_set, w->signum); 3781 sigaddset (&sigfd_set, w->signum);
2670 sigprocmask (SIG_BLOCK, &sigfd_set, 0); 3782 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2671 3783
2672 signalfd (sigfd, &sigfd_set, 0); 3784 signalfd (sigfd, &sigfd_set, 0);
2673 } 3785 }
2674 else
2675#endif
2676 evpipe_init (EV_A);
2677
2678 {
2679#ifndef _WIN32
2680 sigset_t full, prev;
2681 sigfillset (&full);
2682 sigprocmask (SIG_SETMASK, &full, &prev);
2683#endif
2684
2685 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2686
2687#ifndef _WIN32
2688# if EV_USE_SIGNALFD
2689 if (sigfd < 0)/*TODO*/
2690# endif 3786#endif
2691 sigdelset (&prev, w->signum);
2692 sigprocmask (SIG_SETMASK, &prev, 0);
2693#endif
2694 }
2695 3787
2696 ev_start (EV_A_ (W)w, 1); 3788 ev_start (EV_A_ (W)w, 1);
2697 wlist_add (&signals [w->signum - 1].head, (WL)w); 3789 wlist_add (&signals [w->signum - 1].head, (WL)w);
2698 3790
2699 if (!((WL)w)->next) 3791 if (!((WL)w)->next)
2700 {
2701#if _WIN32
2702 signal (w->signum, ev_sighandler);
2703#else
2704# if EV_USE_SIGNALFD 3792# if EV_USE_SIGNALFD
2705 if (sigfd < 0) /*TODO*/ 3793 if (sigfd < 0) /*TODO*/
2706# endif 3794# endif
2707 { 3795 {
3796# ifdef _WIN32
3797 evpipe_init (EV_A);
3798
3799 signal (w->signum, ev_sighandler);
3800# else
2708 struct sigaction sa = { }; 3801 struct sigaction sa;
3802
3803 evpipe_init (EV_A);
3804
2709 sa.sa_handler = ev_sighandler; 3805 sa.sa_handler = ev_sighandler;
2710 sigfillset (&sa.sa_mask); 3806 sigfillset (&sa.sa_mask);
2711 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3807 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2712 sigaction (w->signum, &sa, 0); 3808 sigaction (w->signum, &sa, 0);
3809
3810 if (origflags & EVFLAG_NOSIGMASK)
3811 {
3812 sigemptyset (&sa.sa_mask);
3813 sigaddset (&sa.sa_mask, w->signum);
3814 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2713 } 3815 }
2714#endif 3816#endif
2715 } 3817 }
2716 3818
2717 EV_FREQUENT_CHECK; 3819 EV_FREQUENT_CHECK;
2718} 3820}
2719 3821
2720void noinline 3822void noinline
2721ev_signal_stop (EV_P_ ev_signal *w) 3823ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2722{ 3824{
2723 clear_pending (EV_A_ (W)w); 3825 clear_pending (EV_A_ (W)w);
2724 if (expect_false (!ev_is_active (w))) 3826 if (expect_false (!ev_is_active (w)))
2725 return; 3827 return;
2726 3828
… …
2728 3830
2729 wlist_del (&signals [w->signum - 1].head, (WL)w); 3831 wlist_del (&signals [w->signum - 1].head, (WL)w);
2730 ev_stop (EV_A_ (W)w); 3832 ev_stop (EV_A_ (W)w);
2731 3833
2732 if (!signals [w->signum - 1].head) 3834 if (!signals [w->signum - 1].head)
3835 {
3836#if EV_MULTIPLICITY
3837 signals [w->signum - 1].loop = 0; /* unattach from signal */
3838#endif
2733#if EV_USE_SIGNALFD 3839#if EV_USE_SIGNALFD
2734 if (sigfd >= 0) 3840 if (sigfd >= 0)
2735 { 3841 {
2736 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3842 sigset_t ss;
3843
3844 sigemptyset (&ss);
3845 sigaddset (&ss, w->signum);
2737 sigdelset (&sigfd_set, w->signum); 3846 sigdelset (&sigfd_set, w->signum);
3847
2738 signalfd (sigfd, &sigfd_set, 0); 3848 signalfd (sigfd, &sigfd_set, 0);
2739 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3849 sigprocmask (SIG_UNBLOCK, &ss, 0);
2740 /*TODO: maybe unblock signal? */
2741 } 3850 }
2742 else 3851 else
2743#endif 3852#endif
2744 signal (w->signum, SIG_DFL); 3853 signal (w->signum, SIG_DFL);
3854 }
2745 3855
2746 EV_FREQUENT_CHECK; 3856 EV_FREQUENT_CHECK;
2747} 3857}
3858
3859#endif
3860
3861#if EV_CHILD_ENABLE
2748 3862
2749void 3863void
2750ev_child_start (EV_P_ ev_child *w) 3864ev_child_start (EV_P_ ev_child *w) EV_THROW
2751{ 3865{
2752#if EV_MULTIPLICITY 3866#if EV_MULTIPLICITY
2753 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3867 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2754#endif 3868#endif
2755 if (expect_false (ev_is_active (w))) 3869 if (expect_false (ev_is_active (w)))
2756 return; 3870 return;
2757 3871
2758 EV_FREQUENT_CHECK; 3872 EV_FREQUENT_CHECK;
2759 3873
2760 ev_start (EV_A_ (W)w, 1); 3874 ev_start (EV_A_ (W)w, 1);
2761 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3875 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2762 3876
2763 EV_FREQUENT_CHECK; 3877 EV_FREQUENT_CHECK;
2764} 3878}
2765 3879
2766void 3880void
2767ev_child_stop (EV_P_ ev_child *w) 3881ev_child_stop (EV_P_ ev_child *w) EV_THROW
2768{ 3882{
2769 clear_pending (EV_A_ (W)w); 3883 clear_pending (EV_A_ (W)w);
2770 if (expect_false (!ev_is_active (w))) 3884 if (expect_false (!ev_is_active (w)))
2771 return; 3885 return;
2772 3886
2773 EV_FREQUENT_CHECK; 3887 EV_FREQUENT_CHECK;
2774 3888
2775 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3889 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2776 ev_stop (EV_A_ (W)w); 3890 ev_stop (EV_A_ (W)w);
2777 3891
2778 EV_FREQUENT_CHECK; 3892 EV_FREQUENT_CHECK;
2779} 3893}
3894
3895#endif
2780 3896
2781#if EV_STAT_ENABLE 3897#if EV_STAT_ENABLE
2782 3898
2783# ifdef _WIN32 3899# ifdef _WIN32
2784# undef lstat 3900# undef lstat
… …
2790#define MIN_STAT_INTERVAL 0.1074891 3906#define MIN_STAT_INTERVAL 0.1074891
2791 3907
2792static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3908static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2793 3909
2794#if EV_USE_INOTIFY 3910#if EV_USE_INOTIFY
2795# define EV_INOTIFY_BUFSIZE 8192 3911
3912/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3913# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2796 3914
2797static void noinline 3915static void noinline
2798infy_add (EV_P_ ev_stat *w) 3916infy_add (EV_P_ ev_stat *w)
2799{ 3917{
2800 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); 3918 w->wd = inotify_add_watch (fs_fd, w->path,
3919 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3920 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3921 | IN_DONT_FOLLOW | IN_MASK_ADD);
2801 3922
2802 if (w->wd < 0) 3923 if (w->wd >= 0)
3924 {
3925 struct statfs sfs;
3926
3927 /* now local changes will be tracked by inotify, but remote changes won't */
3928 /* unless the filesystem is known to be local, we therefore still poll */
3929 /* also do poll on <2.6.25, but with normal frequency */
3930
3931 if (!fs_2625)
3932 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3933 else if (!statfs (w->path, &sfs)
3934 && (sfs.f_type == 0x1373 /* devfs */
3935 || sfs.f_type == 0x4006 /* fat */
3936 || sfs.f_type == 0x4d44 /* msdos */
3937 || sfs.f_type == 0xEF53 /* ext2/3 */
3938 || sfs.f_type == 0x72b6 /* jffs2 */
3939 || sfs.f_type == 0x858458f6 /* ramfs */
3940 || sfs.f_type == 0x5346544e /* ntfs */
3941 || sfs.f_type == 0x3153464a /* jfs */
3942 || sfs.f_type == 0x9123683e /* btrfs */
3943 || sfs.f_type == 0x52654973 /* reiser3 */
3944 || sfs.f_type == 0x01021994 /* tmpfs */
3945 || sfs.f_type == 0x58465342 /* xfs */))
3946 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3947 else
3948 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2803 { 3949 }
3950 else
3951 {
3952 /* can't use inotify, continue to stat */
2804 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3953 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2805 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2806 3954
2807 /* monitor some parent directory for speedup hints */ 3955 /* if path is not there, monitor some parent directory for speedup hints */
2808 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3956 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2809 /* but an efficiency issue only */ 3957 /* but an efficiency issue only */
2810 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3958 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2811 { 3959 {
2812 char path [4096]; 3960 char path [4096];
… …
2822 if (!pend || pend == path) 3970 if (!pend || pend == path)
2823 break; 3971 break;
2824 3972
2825 *pend = 0; 3973 *pend = 0;
2826 w->wd = inotify_add_watch (fs_fd, path, mask); 3974 w->wd = inotify_add_watch (fs_fd, path, mask);
2827 } 3975 }
2828 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3976 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2829 } 3977 }
2830 } 3978 }
2831 3979
2832 if (w->wd >= 0) 3980 if (w->wd >= 0)
2833 {
2834 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3981 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2835 3982
2836 /* now local changes will be tracked by inotify, but remote changes won't */ 3983 /* now re-arm timer, if required */
2837 /* unless the filesystem it known to be local, we therefore still poll */ 3984 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2838 /* also do poll on <2.6.25, but with normal frequency */
2839 struct statfs sfs;
2840
2841 if (fs_2625 && !statfs (w->path, &sfs))
2842 if (sfs.f_type == 0x1373 /* devfs */
2843 || sfs.f_type == 0xEF53 /* ext2/3 */
2844 || sfs.f_type == 0x3153464a /* jfs */
2845 || sfs.f_type == 0x52654973 /* reiser3 */
2846 || sfs.f_type == 0x01021994 /* tempfs */
2847 || sfs.f_type == 0x58465342 /* xfs */)
2848 return;
2849
2850 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2851 ev_timer_again (EV_A_ &w->timer); 3985 ev_timer_again (EV_A_ &w->timer);
2852 } 3986 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2853} 3987}
2854 3988
2855static void noinline 3989static void noinline
2856infy_del (EV_P_ ev_stat *w) 3990infy_del (EV_P_ ev_stat *w)
2857{ 3991{
… …
2860 3994
2861 if (wd < 0) 3995 if (wd < 0)
2862 return; 3996 return;
2863 3997
2864 w->wd = -2; 3998 w->wd = -2;
2865 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3999 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2866 wlist_del (&fs_hash [slot].head, (WL)w); 4000 wlist_del (&fs_hash [slot].head, (WL)w);
2867 4001
2868 /* remove this watcher, if others are watching it, they will rearm */ 4002 /* remove this watcher, if others are watching it, they will rearm */
2869 inotify_rm_watch (fs_fd, wd); 4003 inotify_rm_watch (fs_fd, wd);
2870} 4004}
… …
2872static void noinline 4006static void noinline
2873infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4007infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2874{ 4008{
2875 if (slot < 0) 4009 if (slot < 0)
2876 /* overflow, need to check for all hash slots */ 4010 /* overflow, need to check for all hash slots */
2877 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4011 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2878 infy_wd (EV_A_ slot, wd, ev); 4012 infy_wd (EV_A_ slot, wd, ev);
2879 else 4013 else
2880 { 4014 {
2881 WL w_; 4015 WL w_;
2882 4016
2883 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4017 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2884 { 4018 {
2885 ev_stat *w = (ev_stat *)w_; 4019 ev_stat *w = (ev_stat *)w_;
2886 w_ = w_->next; /* lets us remove this watcher and all before it */ 4020 w_ = w_->next; /* lets us remove this watcher and all before it */
2887 4021
2888 if (w->wd == wd || wd == -1) 4022 if (w->wd == wd || wd == -1)
2889 { 4023 {
2890 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4024 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2891 { 4025 {
2892 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4026 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2893 w->wd = -1; 4027 w->wd = -1;
2894 infy_add (EV_A_ w); /* re-add, no matter what */ 4028 infy_add (EV_A_ w); /* re-add, no matter what */
2895 } 4029 }
2896 4030
2897 stat_timer_cb (EV_A_ &w->timer, 0); 4031 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2902 4036
2903static void 4037static void
2904infy_cb (EV_P_ ev_io *w, int revents) 4038infy_cb (EV_P_ ev_io *w, int revents)
2905{ 4039{
2906 char buf [EV_INOTIFY_BUFSIZE]; 4040 char buf [EV_INOTIFY_BUFSIZE];
2907 struct inotify_event *ev = (struct inotify_event *)buf;
2908 int ofs; 4041 int ofs;
2909 int len = read (fs_fd, buf, sizeof (buf)); 4042 int len = read (fs_fd, buf, sizeof (buf));
2910 4043
2911 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4044 for (ofs = 0; ofs < len; )
4045 {
4046 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2912 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4047 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4048 ofs += sizeof (struct inotify_event) + ev->len;
4049 }
2913} 4050}
2914 4051
2915inline_size void 4052inline_size void ecb_cold
2916check_2625 (EV_P) 4053ev_check_2625 (EV_P)
2917{ 4054{
2918 /* kernels < 2.6.25 are borked 4055 /* kernels < 2.6.25 are borked
2919 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4056 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2920 */ 4057 */
2921 struct utsname buf; 4058 if (ev_linux_version () < 0x020619)
2922 int major, minor, micro;
2923
2924 if (uname (&buf))
2925 return; 4059 return;
2926 4060
2927 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2928 return;
2929
2930 if (major < 2
2931 || (major == 2 && minor < 6)
2932 || (major == 2 && minor == 6 && micro < 25))
2933 return;
2934
2935 fs_2625 = 1; 4061 fs_2625 = 1;
4062}
4063
4064inline_size int
4065infy_newfd (void)
4066{
4067#if defined IN_CLOEXEC && defined IN_NONBLOCK
4068 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4069 if (fd >= 0)
4070 return fd;
4071#endif
4072 return inotify_init ();
2936} 4073}
2937 4074
2938inline_size void 4075inline_size void
2939infy_init (EV_P) 4076infy_init (EV_P)
2940{ 4077{
2941 if (fs_fd != -2) 4078 if (fs_fd != -2)
2942 return; 4079 return;
2943 4080
2944 fs_fd = -1; 4081 fs_fd = -1;
2945 4082
2946 check_2625 (EV_A); 4083 ev_check_2625 (EV_A);
2947 4084
2948 fs_fd = inotify_init (); 4085 fs_fd = infy_newfd ();
2949 4086
2950 if (fs_fd >= 0) 4087 if (fs_fd >= 0)
2951 { 4088 {
4089 fd_intern (fs_fd);
2952 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4090 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2953 ev_set_priority (&fs_w, EV_MAXPRI); 4091 ev_set_priority (&fs_w, EV_MAXPRI);
2954 ev_io_start (EV_A_ &fs_w); 4092 ev_io_start (EV_A_ &fs_w);
4093 ev_unref (EV_A);
2955 } 4094 }
2956} 4095}
2957 4096
2958inline_size void 4097inline_size void
2959infy_fork (EV_P) 4098infy_fork (EV_P)
… …
2961 int slot; 4100 int slot;
2962 4101
2963 if (fs_fd < 0) 4102 if (fs_fd < 0)
2964 return; 4103 return;
2965 4104
4105 ev_ref (EV_A);
4106 ev_io_stop (EV_A_ &fs_w);
2966 close (fs_fd); 4107 close (fs_fd);
2967 fs_fd = inotify_init (); 4108 fs_fd = infy_newfd ();
2968 4109
4110 if (fs_fd >= 0)
4111 {
4112 fd_intern (fs_fd);
4113 ev_io_set (&fs_w, fs_fd, EV_READ);
4114 ev_io_start (EV_A_ &fs_w);
4115 ev_unref (EV_A);
4116 }
4117
2969 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4118 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2970 { 4119 {
2971 WL w_ = fs_hash [slot].head; 4120 WL w_ = fs_hash [slot].head;
2972 fs_hash [slot].head = 0; 4121 fs_hash [slot].head = 0;
2973 4122
2974 while (w_) 4123 while (w_)
… …
2979 w->wd = -1; 4128 w->wd = -1;
2980 4129
2981 if (fs_fd >= 0) 4130 if (fs_fd >= 0)
2982 infy_add (EV_A_ w); /* re-add, no matter what */ 4131 infy_add (EV_A_ w); /* re-add, no matter what */
2983 else 4132 else
4133 {
4134 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4135 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2984 ev_timer_again (EV_A_ &w->timer); 4136 ev_timer_again (EV_A_ &w->timer);
4137 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4138 }
2985 } 4139 }
2986 } 4140 }
2987} 4141}
2988 4142
2989#endif 4143#endif
… …
2993#else 4147#else
2994# define EV_LSTAT(p,b) lstat (p, b) 4148# define EV_LSTAT(p,b) lstat (p, b)
2995#endif 4149#endif
2996 4150
2997void 4151void
2998ev_stat_stat (EV_P_ ev_stat *w) 4152ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2999{ 4153{
3000 if (lstat (w->path, &w->attr) < 0) 4154 if (lstat (w->path, &w->attr) < 0)
3001 w->attr.st_nlink = 0; 4155 w->attr.st_nlink = 0;
3002 else if (!w->attr.st_nlink) 4156 else if (!w->attr.st_nlink)
3003 w->attr.st_nlink = 1; 4157 w->attr.st_nlink = 1;
… …
3006static void noinline 4160static void noinline
3007stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4161stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3008{ 4162{
3009 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4163 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3010 4164
3011 /* we copy this here each the time so that */ 4165 ev_statdata prev = w->attr;
3012 /* prev has the old value when the callback gets invoked */
3013 w->prev = w->attr;
3014 ev_stat_stat (EV_A_ w); 4166 ev_stat_stat (EV_A_ w);
3015 4167
3016 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4168 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3017 if ( 4169 if (
3018 w->prev.st_dev != w->attr.st_dev 4170 prev.st_dev != w->attr.st_dev
3019 || w->prev.st_ino != w->attr.st_ino 4171 || prev.st_ino != w->attr.st_ino
3020 || w->prev.st_mode != w->attr.st_mode 4172 || prev.st_mode != w->attr.st_mode
3021 || w->prev.st_nlink != w->attr.st_nlink 4173 || prev.st_nlink != w->attr.st_nlink
3022 || w->prev.st_uid != w->attr.st_uid 4174 || prev.st_uid != w->attr.st_uid
3023 || w->prev.st_gid != w->attr.st_gid 4175 || prev.st_gid != w->attr.st_gid
3024 || w->prev.st_rdev != w->attr.st_rdev 4176 || prev.st_rdev != w->attr.st_rdev
3025 || w->prev.st_size != w->attr.st_size 4177 || prev.st_size != w->attr.st_size
3026 || w->prev.st_atime != w->attr.st_atime 4178 || prev.st_atime != w->attr.st_atime
3027 || w->prev.st_mtime != w->attr.st_mtime 4179 || prev.st_mtime != w->attr.st_mtime
3028 || w->prev.st_ctime != w->attr.st_ctime 4180 || prev.st_ctime != w->attr.st_ctime
3029 ) { 4181 ) {
4182 /* we only update w->prev on actual differences */
4183 /* in case we test more often than invoke the callback, */
4184 /* to ensure that prev is always different to attr */
4185 w->prev = prev;
4186
3030 #if EV_USE_INOTIFY 4187 #if EV_USE_INOTIFY
3031 if (fs_fd >= 0) 4188 if (fs_fd >= 0)
3032 { 4189 {
3033 infy_del (EV_A_ w); 4190 infy_del (EV_A_ w);
3034 infy_add (EV_A_ w); 4191 infy_add (EV_A_ w);
… …
3039 ev_feed_event (EV_A_ w, EV_STAT); 4196 ev_feed_event (EV_A_ w, EV_STAT);
3040 } 4197 }
3041} 4198}
3042 4199
3043void 4200void
3044ev_stat_start (EV_P_ ev_stat *w) 4201ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3045{ 4202{
3046 if (expect_false (ev_is_active (w))) 4203 if (expect_false (ev_is_active (w)))
3047 return; 4204 return;
3048 4205
3049 ev_stat_stat (EV_A_ w); 4206 ev_stat_stat (EV_A_ w);
… …
3059 4216
3060 if (fs_fd >= 0) 4217 if (fs_fd >= 0)
3061 infy_add (EV_A_ w); 4218 infy_add (EV_A_ w);
3062 else 4219 else
3063#endif 4220#endif
4221 {
3064 ev_timer_again (EV_A_ &w->timer); 4222 ev_timer_again (EV_A_ &w->timer);
4223 ev_unref (EV_A);
4224 }
3065 4225
3066 ev_start (EV_A_ (W)w, 1); 4226 ev_start (EV_A_ (W)w, 1);
3067 4227
3068 EV_FREQUENT_CHECK; 4228 EV_FREQUENT_CHECK;
3069} 4229}
3070 4230
3071void 4231void
3072ev_stat_stop (EV_P_ ev_stat *w) 4232ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3073{ 4233{
3074 clear_pending (EV_A_ (W)w); 4234 clear_pending (EV_A_ (W)w);
3075 if (expect_false (!ev_is_active (w))) 4235 if (expect_false (!ev_is_active (w)))
3076 return; 4236 return;
3077 4237
3078 EV_FREQUENT_CHECK; 4238 EV_FREQUENT_CHECK;
3079 4239
3080#if EV_USE_INOTIFY 4240#if EV_USE_INOTIFY
3081 infy_del (EV_A_ w); 4241 infy_del (EV_A_ w);
3082#endif 4242#endif
4243
4244 if (ev_is_active (&w->timer))
4245 {
4246 ev_ref (EV_A);
3083 ev_timer_stop (EV_A_ &w->timer); 4247 ev_timer_stop (EV_A_ &w->timer);
4248 }
3084 4249
3085 ev_stop (EV_A_ (W)w); 4250 ev_stop (EV_A_ (W)w);
3086 4251
3087 EV_FREQUENT_CHECK; 4252 EV_FREQUENT_CHECK;
3088} 4253}
3089#endif 4254#endif
3090 4255
3091#if EV_IDLE_ENABLE 4256#if EV_IDLE_ENABLE
3092void 4257void
3093ev_idle_start (EV_P_ ev_idle *w) 4258ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3094{ 4259{
3095 if (expect_false (ev_is_active (w))) 4260 if (expect_false (ev_is_active (w)))
3096 return; 4261 return;
3097 4262
3098 pri_adjust (EV_A_ (W)w); 4263 pri_adjust (EV_A_ (W)w);
… …
3111 4276
3112 EV_FREQUENT_CHECK; 4277 EV_FREQUENT_CHECK;
3113} 4278}
3114 4279
3115void 4280void
3116ev_idle_stop (EV_P_ ev_idle *w) 4281ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3117{ 4282{
3118 clear_pending (EV_A_ (W)w); 4283 clear_pending (EV_A_ (W)w);
3119 if (expect_false (!ev_is_active (w))) 4284 if (expect_false (!ev_is_active (w)))
3120 return; 4285 return;
3121 4286
… …
3133 4298
3134 EV_FREQUENT_CHECK; 4299 EV_FREQUENT_CHECK;
3135} 4300}
3136#endif 4301#endif
3137 4302
4303#if EV_PREPARE_ENABLE
3138void 4304void
3139ev_prepare_start (EV_P_ ev_prepare *w) 4305ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3140{ 4306{
3141 if (expect_false (ev_is_active (w))) 4307 if (expect_false (ev_is_active (w)))
3142 return; 4308 return;
3143 4309
3144 EV_FREQUENT_CHECK; 4310 EV_FREQUENT_CHECK;
… …
3149 4315
3150 EV_FREQUENT_CHECK; 4316 EV_FREQUENT_CHECK;
3151} 4317}
3152 4318
3153void 4319void
3154ev_prepare_stop (EV_P_ ev_prepare *w) 4320ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3155{ 4321{
3156 clear_pending (EV_A_ (W)w); 4322 clear_pending (EV_A_ (W)w);
3157 if (expect_false (!ev_is_active (w))) 4323 if (expect_false (!ev_is_active (w)))
3158 return; 4324 return;
3159 4325
… …
3168 4334
3169 ev_stop (EV_A_ (W)w); 4335 ev_stop (EV_A_ (W)w);
3170 4336
3171 EV_FREQUENT_CHECK; 4337 EV_FREQUENT_CHECK;
3172} 4338}
4339#endif
3173 4340
4341#if EV_CHECK_ENABLE
3174void 4342void
3175ev_check_start (EV_P_ ev_check *w) 4343ev_check_start (EV_P_ ev_check *w) EV_THROW
3176{ 4344{
3177 if (expect_false (ev_is_active (w))) 4345 if (expect_false (ev_is_active (w)))
3178 return; 4346 return;
3179 4347
3180 EV_FREQUENT_CHECK; 4348 EV_FREQUENT_CHECK;
… …
3185 4353
3186 EV_FREQUENT_CHECK; 4354 EV_FREQUENT_CHECK;
3187} 4355}
3188 4356
3189void 4357void
3190ev_check_stop (EV_P_ ev_check *w) 4358ev_check_stop (EV_P_ ev_check *w) EV_THROW
3191{ 4359{
3192 clear_pending (EV_A_ (W)w); 4360 clear_pending (EV_A_ (W)w);
3193 if (expect_false (!ev_is_active (w))) 4361 if (expect_false (!ev_is_active (w)))
3194 return; 4362 return;
3195 4363
… …
3204 4372
3205 ev_stop (EV_A_ (W)w); 4373 ev_stop (EV_A_ (W)w);
3206 4374
3207 EV_FREQUENT_CHECK; 4375 EV_FREQUENT_CHECK;
3208} 4376}
4377#endif
3209 4378
3210#if EV_EMBED_ENABLE 4379#if EV_EMBED_ENABLE
3211void noinline 4380void noinline
3212ev_embed_sweep (EV_P_ ev_embed *w) 4381ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3213{ 4382{
3214 ev_loop (w->other, EVLOOP_NONBLOCK); 4383 ev_run (w->other, EVRUN_NOWAIT);
3215} 4384}
3216 4385
3217static void 4386static void
3218embed_io_cb (EV_P_ ev_io *io, int revents) 4387embed_io_cb (EV_P_ ev_io *io, int revents)
3219{ 4388{
3220 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4389 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3221 4390
3222 if (ev_cb (w)) 4391 if (ev_cb (w))
3223 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4392 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3224 else 4393 else
3225 ev_loop (w->other, EVLOOP_NONBLOCK); 4394 ev_run (w->other, EVRUN_NOWAIT);
3226} 4395}
3227 4396
3228static void 4397static void
3229embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4398embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3230{ 4399{
3231 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4400 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3232 4401
3233 { 4402 {
3234 struct ev_loop *loop = w->other; 4403 EV_P = w->other;
3235 4404
3236 while (fdchangecnt) 4405 while (fdchangecnt)
3237 { 4406 {
3238 fd_reify (EV_A); 4407 fd_reify (EV_A);
3239 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4408 ev_run (EV_A_ EVRUN_NOWAIT);
3240 } 4409 }
3241 } 4410 }
3242} 4411}
3243 4412
3244static void 4413static void
… …
3247 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4416 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3248 4417
3249 ev_embed_stop (EV_A_ w); 4418 ev_embed_stop (EV_A_ w);
3250 4419
3251 { 4420 {
3252 struct ev_loop *loop = w->other; 4421 EV_P = w->other;
3253 4422
3254 ev_loop_fork (EV_A); 4423 ev_loop_fork (EV_A);
3255 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4424 ev_run (EV_A_ EVRUN_NOWAIT);
3256 } 4425 }
3257 4426
3258 ev_embed_start (EV_A_ w); 4427 ev_embed_start (EV_A_ w);
3259} 4428}
3260 4429
… …
3265 ev_idle_stop (EV_A_ idle); 4434 ev_idle_stop (EV_A_ idle);
3266} 4435}
3267#endif 4436#endif
3268 4437
3269void 4438void
3270ev_embed_start (EV_P_ ev_embed *w) 4439ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3271{ 4440{
3272 if (expect_false (ev_is_active (w))) 4441 if (expect_false (ev_is_active (w)))
3273 return; 4442 return;
3274 4443
3275 { 4444 {
3276 struct ev_loop *loop = w->other; 4445 EV_P = w->other;
3277 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4446 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3278 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4447 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3279 } 4448 }
3280 4449
3281 EV_FREQUENT_CHECK; 4450 EV_FREQUENT_CHECK;
… …
3296 4465
3297 EV_FREQUENT_CHECK; 4466 EV_FREQUENT_CHECK;
3298} 4467}
3299 4468
3300void 4469void
3301ev_embed_stop (EV_P_ ev_embed *w) 4470ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3302{ 4471{
3303 clear_pending (EV_A_ (W)w); 4472 clear_pending (EV_A_ (W)w);
3304 if (expect_false (!ev_is_active (w))) 4473 if (expect_false (!ev_is_active (w)))
3305 return; 4474 return;
3306 4475
… …
3308 4477
3309 ev_io_stop (EV_A_ &w->io); 4478 ev_io_stop (EV_A_ &w->io);
3310 ev_prepare_stop (EV_A_ &w->prepare); 4479 ev_prepare_stop (EV_A_ &w->prepare);
3311 ev_fork_stop (EV_A_ &w->fork); 4480 ev_fork_stop (EV_A_ &w->fork);
3312 4481
4482 ev_stop (EV_A_ (W)w);
4483
3313 EV_FREQUENT_CHECK; 4484 EV_FREQUENT_CHECK;
3314} 4485}
3315#endif 4486#endif
3316 4487
3317#if EV_FORK_ENABLE 4488#if EV_FORK_ENABLE
3318void 4489void
3319ev_fork_start (EV_P_ ev_fork *w) 4490ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3320{ 4491{
3321 if (expect_false (ev_is_active (w))) 4492 if (expect_false (ev_is_active (w)))
3322 return; 4493 return;
3323 4494
3324 EV_FREQUENT_CHECK; 4495 EV_FREQUENT_CHECK;
… …
3329 4500
3330 EV_FREQUENT_CHECK; 4501 EV_FREQUENT_CHECK;
3331} 4502}
3332 4503
3333void 4504void
3334ev_fork_stop (EV_P_ ev_fork *w) 4505ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3335{ 4506{
3336 clear_pending (EV_A_ (W)w); 4507 clear_pending (EV_A_ (W)w);
3337 if (expect_false (!ev_is_active (w))) 4508 if (expect_false (!ev_is_active (w)))
3338 return; 4509 return;
3339 4510
… …
3350 4521
3351 EV_FREQUENT_CHECK; 4522 EV_FREQUENT_CHECK;
3352} 4523}
3353#endif 4524#endif
3354 4525
4526#if EV_CLEANUP_ENABLE
4527void
4528ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4529{
4530 if (expect_false (ev_is_active (w)))
4531 return;
4532
4533 EV_FREQUENT_CHECK;
4534
4535 ev_start (EV_A_ (W)w, ++cleanupcnt);
4536 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4537 cleanups [cleanupcnt - 1] = w;
4538
4539 /* cleanup watchers should never keep a refcount on the loop */
4540 ev_unref (EV_A);
4541 EV_FREQUENT_CHECK;
4542}
4543
4544void
4545ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4546{
4547 clear_pending (EV_A_ (W)w);
4548 if (expect_false (!ev_is_active (w)))
4549 return;
4550
4551 EV_FREQUENT_CHECK;
4552 ev_ref (EV_A);
4553
4554 {
4555 int active = ev_active (w);
4556
4557 cleanups [active - 1] = cleanups [--cleanupcnt];
4558 ev_active (cleanups [active - 1]) = active;
4559 }
4560
4561 ev_stop (EV_A_ (W)w);
4562
4563 EV_FREQUENT_CHECK;
4564}
4565#endif
4566
3355#if EV_ASYNC_ENABLE 4567#if EV_ASYNC_ENABLE
3356void 4568void
3357ev_async_start (EV_P_ ev_async *w) 4569ev_async_start (EV_P_ ev_async *w) EV_THROW
3358{ 4570{
3359 if (expect_false (ev_is_active (w))) 4571 if (expect_false (ev_is_active (w)))
3360 return; 4572 return;
4573
4574 w->sent = 0;
3361 4575
3362 evpipe_init (EV_A); 4576 evpipe_init (EV_A);
3363 4577
3364 EV_FREQUENT_CHECK; 4578 EV_FREQUENT_CHECK;
3365 4579
… …
3369 4583
3370 EV_FREQUENT_CHECK; 4584 EV_FREQUENT_CHECK;
3371} 4585}
3372 4586
3373void 4587void
3374ev_async_stop (EV_P_ ev_async *w) 4588ev_async_stop (EV_P_ ev_async *w) EV_THROW
3375{ 4589{
3376 clear_pending (EV_A_ (W)w); 4590 clear_pending (EV_A_ (W)w);
3377 if (expect_false (!ev_is_active (w))) 4591 if (expect_false (!ev_is_active (w)))
3378 return; 4592 return;
3379 4593
… …
3390 4604
3391 EV_FREQUENT_CHECK; 4605 EV_FREQUENT_CHECK;
3392} 4606}
3393 4607
3394void 4608void
3395ev_async_send (EV_P_ ev_async *w) 4609ev_async_send (EV_P_ ev_async *w) EV_THROW
3396{ 4610{
3397 w->sent = 1; 4611 w->sent = 1;
3398 evpipe_write (EV_A_ &gotasync); 4612 evpipe_write (EV_A_ &async_pending);
3399} 4613}
3400#endif 4614#endif
3401 4615
3402/*****************************************************************************/ 4616/*****************************************************************************/
3403 4617
… …
3437 4651
3438 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4652 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3439} 4653}
3440 4654
3441void 4655void
3442ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4656ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3443{ 4657{
3444 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4658 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3445 4659
3446 if (expect_false (!once)) 4660 if (expect_false (!once))
3447 { 4661 {
3448 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4662 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3449 return; 4663 return;
3450 } 4664 }
3451 4665
3452 once->cb = cb; 4666 once->cb = cb;
3453 once->arg = arg; 4667 once->arg = arg;
… …
3468} 4682}
3469 4683
3470/*****************************************************************************/ 4684/*****************************************************************************/
3471 4685
3472#if EV_WALK_ENABLE 4686#if EV_WALK_ENABLE
3473void 4687void ecb_cold
3474ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4688ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3475{ 4689{
3476 int i, j; 4690 int i, j;
3477 ev_watcher_list *wl, *wn; 4691 ev_watcher_list *wl, *wn;
3478 4692
3479 if (types & (EV_IO | EV_EMBED)) 4693 if (types & (EV_IO | EV_EMBED))
… …
3522 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4736 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3523#endif 4737#endif
3524 4738
3525#if EV_IDLE_ENABLE 4739#if EV_IDLE_ENABLE
3526 if (types & EV_IDLE) 4740 if (types & EV_IDLE)
3527 for (j = NUMPRI; i--; ) 4741 for (j = NUMPRI; j--; )
3528 for (i = idlecnt [j]; i--; ) 4742 for (i = idlecnt [j]; i--; )
3529 cb (EV_A_ EV_IDLE, idles [j][i]); 4743 cb (EV_A_ EV_IDLE, idles [j][i]);
3530#endif 4744#endif
3531 4745
3532#if EV_FORK_ENABLE 4746#if EV_FORK_ENABLE
… …
3540 if (types & EV_ASYNC) 4754 if (types & EV_ASYNC)
3541 for (i = asynccnt; i--; ) 4755 for (i = asynccnt; i--; )
3542 cb (EV_A_ EV_ASYNC, asyncs [i]); 4756 cb (EV_A_ EV_ASYNC, asyncs [i]);
3543#endif 4757#endif
3544 4758
4759#if EV_PREPARE_ENABLE
3545 if (types & EV_PREPARE) 4760 if (types & EV_PREPARE)
3546 for (i = preparecnt; i--; ) 4761 for (i = preparecnt; i--; )
3547#if EV_EMBED_ENABLE 4762# if EV_EMBED_ENABLE
3548 if (ev_cb (prepares [i]) != embed_prepare_cb) 4763 if (ev_cb (prepares [i]) != embed_prepare_cb)
3549#endif 4764# endif
3550 cb (EV_A_ EV_PREPARE, prepares [i]); 4765 cb (EV_A_ EV_PREPARE, prepares [i]);
4766#endif
3551 4767
4768#if EV_CHECK_ENABLE
3552 if (types & EV_CHECK) 4769 if (types & EV_CHECK)
3553 for (i = checkcnt; i--; ) 4770 for (i = checkcnt; i--; )
3554 cb (EV_A_ EV_CHECK, checks [i]); 4771 cb (EV_A_ EV_CHECK, checks [i]);
4772#endif
3555 4773
4774#if EV_SIGNAL_ENABLE
3556 if (types & EV_SIGNAL) 4775 if (types & EV_SIGNAL)
3557 for (i = 0; i < signalmax; ++i) 4776 for (i = 0; i < EV_NSIG - 1; ++i)
3558 for (wl = signals [i].head; wl; ) 4777 for (wl = signals [i].head; wl; )
3559 { 4778 {
3560 wn = wl->next; 4779 wn = wl->next;
3561 cb (EV_A_ EV_SIGNAL, wl); 4780 cb (EV_A_ EV_SIGNAL, wl);
3562 wl = wn; 4781 wl = wn;
3563 } 4782 }
4783#endif
3564 4784
4785#if EV_CHILD_ENABLE
3565 if (types & EV_CHILD) 4786 if (types & EV_CHILD)
3566 for (i = EV_PID_HASHSIZE; i--; ) 4787 for (i = (EV_PID_HASHSIZE); i--; )
3567 for (wl = childs [i]; wl; ) 4788 for (wl = childs [i]; wl; )
3568 { 4789 {
3569 wn = wl->next; 4790 wn = wl->next;
3570 cb (EV_A_ EV_CHILD, wl); 4791 cb (EV_A_ EV_CHILD, wl);
3571 wl = wn; 4792 wl = wn;
3572 } 4793 }
4794#endif
3573/* EV_STAT 0x00001000 /* stat data changed */ 4795/* EV_STAT 0x00001000 /* stat data changed */
3574/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4796/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3575} 4797}
3576#endif 4798#endif
3577 4799
3578#if EV_MULTIPLICITY 4800#if EV_MULTIPLICITY
3579 #include "ev_wrap.h" 4801 #include "ev_wrap.h"
3580#endif 4802#endif
3581 4803
3582#ifdef __cplusplus
3583}
3584#endif
3585

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