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Comparing libev/ev.c (file contents):
Revision 1.337 by root, Wed Mar 10 09:18:24 2010 UTC vs.
Revision 1.472 by root, Tue Sep 9 13:24:13 2014 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 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"
46# endif
47
48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
50# 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
… …
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
114# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
116# define EV_USE_KQUEUE 1 121# ifndef EV_USE_KQUEUE
117# else 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
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>
158#include <string.h> 168#include <string.h>
159#include <fcntl.h> 169#include <fcntl.h>
160#include <stddef.h> 170#include <stddef.h>
161 171
… …
171 181
172#ifdef EV_H 182#ifdef EV_H
173# include EV_H 183# include EV_H
174#else 184#else
175# 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
176#endif 197#endif
177 198
178#ifndef _WIN32 199#ifndef _WIN32
179# include <sys/time.h> 200# include <sys/time.h>
180# include <sys/wait.h> 201# include <sys/wait.h>
181# include <unistd.h> 202# include <unistd.h>
182#else 203#else
183# include <io.h> 204# include <io.h>
184# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
185# include <windows.h> 207# include <windows.h>
186# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
187# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
188# endif 210# endif
189# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
190#endif 212#endif
191 213
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
221
192/* 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 */
193 223
194/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
195#if defined (EV_NSIG) 225#if defined EV_NSIG
196/* use what's provided */ 226/* use what's provided */
197#elif defined (NSIG) 227#elif defined NSIG
198# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
199#elif defined(_NSIG) 229#elif defined _NSIG
200# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
201#elif defined (SIGMAX) 231#elif defined SIGMAX
202# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
203#elif defined (SIG_MAX) 233#elif defined SIG_MAX
204# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
205#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
206# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
207#elif defined (MAXSIG) 237#elif defined MAXSIG
208# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
209#elif defined (MAX_SIG) 239#elif defined MAX_SIG
210# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
211#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
212# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
213#elif defined (_sys_nsig) 243#elif defined _sys_nsig
214# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
215#else 245#else
216# error "unable to find value for NSIG, please report" 246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
217/* to make it compile regardless, just remove the above line, */ 247#endif
218/* but consider reporting it, too! :) */ 248
219# define EV_NSIG 65 249#ifndef EV_USE_FLOOR
250# define EV_USE_FLOOR 0
220#endif 251#endif
221 252
222#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
223# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
224# define EV_USE_CLOCK_SYSCALL 1 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
225# else 256# else
226# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
227# endif 258# endif
228#endif 259#endif
229 260
261#if !(_POSIX_TIMERS > 0)
262# ifndef EV_USE_MONOTONIC
263# define EV_USE_MONOTONIC 0
264# endif
265# ifndef EV_USE_REALTIME
266# define EV_USE_REALTIME 0
267# endif
268#endif
269
230#ifndef EV_USE_MONOTONIC 270#ifndef EV_USE_MONOTONIC
231# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 271# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
232# define EV_USE_MONOTONIC 1 272# define EV_USE_MONOTONIC EV_FEATURE_OS
233# else 273# else
234# define EV_USE_MONOTONIC 0 274# define EV_USE_MONOTONIC 0
235# endif 275# endif
236#endif 276#endif
237 277
… …
239# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 279# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
240#endif 280#endif
241 281
242#ifndef EV_USE_NANOSLEEP 282#ifndef EV_USE_NANOSLEEP
243# if _POSIX_C_SOURCE >= 199309L 283# if _POSIX_C_SOURCE >= 199309L
244# define EV_USE_NANOSLEEP 1 284# define EV_USE_NANOSLEEP EV_FEATURE_OS
245# else 285# else
246# define EV_USE_NANOSLEEP 0 286# define EV_USE_NANOSLEEP 0
247# endif 287# endif
248#endif 288#endif
249 289
250#ifndef EV_USE_SELECT 290#ifndef EV_USE_SELECT
251# define EV_USE_SELECT 1 291# define EV_USE_SELECT EV_FEATURE_BACKENDS
252#endif 292#endif
253 293
254#ifndef EV_USE_POLL 294#ifndef EV_USE_POLL
255# ifdef _WIN32 295# ifdef _WIN32
256# define EV_USE_POLL 0 296# define EV_USE_POLL 0
257# else 297# else
258# define EV_USE_POLL 1 298# define EV_USE_POLL EV_FEATURE_BACKENDS
259# endif 299# endif
260#endif 300#endif
261 301
262#ifndef EV_USE_EPOLL 302#ifndef EV_USE_EPOLL
263# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
264# define EV_USE_EPOLL 1 304# define EV_USE_EPOLL EV_FEATURE_BACKENDS
265# else 305# else
266# define EV_USE_EPOLL 0 306# define EV_USE_EPOLL 0
267# endif 307# endif
268#endif 308#endif
269 309
… …
275# define EV_USE_PORT 0 315# define EV_USE_PORT 0
276#endif 316#endif
277 317
278#ifndef EV_USE_INOTIFY 318#ifndef EV_USE_INOTIFY
279# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
280# define EV_USE_INOTIFY 1 320# define EV_USE_INOTIFY EV_FEATURE_OS
281# else 321# else
282# define EV_USE_INOTIFY 0 322# define EV_USE_INOTIFY 0
283# endif 323# endif
284#endif 324#endif
285 325
286#ifndef EV_PID_HASHSIZE 326#ifndef EV_PID_HASHSIZE
287# if EV_MINIMAL 327# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
288# define EV_PID_HASHSIZE 1
289# else
290# define EV_PID_HASHSIZE 16
291# endif
292#endif 328#endif
293 329
294#ifndef EV_INOTIFY_HASHSIZE 330#ifndef EV_INOTIFY_HASHSIZE
295# if EV_MINIMAL 331# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
296# define EV_INOTIFY_HASHSIZE 1
297# else
298# define EV_INOTIFY_HASHSIZE 16
299# endif
300#endif 332#endif
301 333
302#ifndef EV_USE_EVENTFD 334#ifndef EV_USE_EVENTFD
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 335# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
304# define EV_USE_EVENTFD 1 336# define EV_USE_EVENTFD EV_FEATURE_OS
305# else 337# else
306# define EV_USE_EVENTFD 0 338# define EV_USE_EVENTFD 0
307# endif 339# endif
308#endif 340#endif
309 341
310#ifndef EV_USE_SIGNALFD 342#ifndef EV_USE_SIGNALFD
311# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 343# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
312# define EV_USE_SIGNALFD 1 344# define EV_USE_SIGNALFD EV_FEATURE_OS
313# else 345# else
314# define EV_USE_SIGNALFD 0 346# define EV_USE_SIGNALFD 0
315# endif 347# endif
316#endif 348#endif
317 349
… …
320# define EV_USE_4HEAP 1 352# define EV_USE_4HEAP 1
321# define EV_HEAP_CACHE_AT 1 353# define EV_HEAP_CACHE_AT 1
322#endif 354#endif
323 355
324#ifndef EV_VERIFY 356#ifndef EV_VERIFY
325# define EV_VERIFY !EV_MINIMAL 357# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
326#endif 358#endif
327 359
328#ifndef EV_USE_4HEAP 360#ifndef EV_USE_4HEAP
329# define EV_USE_4HEAP !EV_MINIMAL 361# define EV_USE_4HEAP EV_FEATURE_DATA
330#endif 362#endif
331 363
332#ifndef EV_HEAP_CACHE_AT 364#ifndef EV_HEAP_CACHE_AT
333# define EV_HEAP_CACHE_AT !EV_MINIMAL 365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
366#endif
367
368#ifdef ANDROID
369/* supposedly, android doesn't typedef fd_mask */
370# undef EV_USE_SELECT
371# define EV_USE_SELECT 0
372/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
373# undef EV_USE_CLOCK_SYSCALL
374# define EV_USE_CLOCK_SYSCALL 0
375#endif
376
377/* aix's poll.h seems to cause lots of trouble */
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
334#endif 382#endif
335 383
336/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 384/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
337/* which makes programs even slower. might work on other unices, too. */ 385/* which makes programs even slower. might work on other unices, too. */
338#if EV_USE_CLOCK_SYSCALL 386#if EV_USE_CLOCK_SYSCALL
339# include <syscall.h> 387# include <sys/syscall.h>
340# ifdef SYS_clock_gettime 388# ifdef SYS_clock_gettime
341# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 389# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
342# undef EV_USE_MONOTONIC 390# undef EV_USE_MONOTONIC
343# define EV_USE_MONOTONIC 1 391# define EV_USE_MONOTONIC 1
344# else 392# else
… …
347# endif 395# endif
348#endif 396#endif
349 397
350/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 398/* this block fixes any misconfiguration where we know we run into trouble otherwise */
351 399
352#ifdef _AIX
353/* AIX has a completely broken poll.h header */
354# undef EV_USE_POLL
355# define EV_USE_POLL 0
356#endif
357
358#ifndef CLOCK_MONOTONIC 400#ifndef CLOCK_MONOTONIC
359# undef EV_USE_MONOTONIC 401# undef EV_USE_MONOTONIC
360# define EV_USE_MONOTONIC 0 402# define EV_USE_MONOTONIC 0
361#endif 403#endif
362 404
… …
369# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
370# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
371#endif 413#endif
372 414
373#if !EV_USE_NANOSLEEP 415#if !EV_USE_NANOSLEEP
374# ifndef _WIN32 416/* hp-ux has it in sys/time.h, which we unconditionally include above */
417# if !defined _WIN32 && !defined __hpux
375# include <sys/select.h> 418# include <sys/select.h>
376# endif 419# endif
377#endif 420#endif
378 421
379#if EV_USE_INOTIFY 422#if EV_USE_INOTIFY
380# include <sys/utsname.h>
381# include <sys/statfs.h> 423# include <sys/statfs.h>
382# include <sys/inotify.h> 424# include <sys/inotify.h>
383/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 425/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
384# ifndef IN_DONT_FOLLOW 426# ifndef IN_DONT_FOLLOW
385# undef EV_USE_INOTIFY 427# undef EV_USE_INOTIFY
386# define EV_USE_INOTIFY 0 428# define EV_USE_INOTIFY 0
387# endif 429# endif
388#endif
389
390#if EV_SELECT_IS_WINSOCKET
391# include <winsock.h>
392#endif 430#endif
393 431
394#if EV_USE_EVENTFD 432#if EV_USE_EVENTFD
395/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
396# include <stdint.h> 434# include <stdint.h>
… …
402# define EFD_CLOEXEC O_CLOEXEC 440# define EFD_CLOEXEC O_CLOEXEC
403# else 441# else
404# define EFD_CLOEXEC 02000000 442# define EFD_CLOEXEC 02000000
405# endif 443# endif
406# endif 444# endif
407# ifdef __cplusplus
408extern "C" {
409# endif
410int (eventfd) (unsigned int initval, int flags); 445EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
411# ifdef __cplusplus
412}
413# endif
414#endif 446#endif
415 447
416#if EV_USE_SIGNALFD 448#if EV_USE_SIGNALFD
417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 449/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
418# include <stdint.h> 450# include <stdint.h>
… …
424# define SFD_CLOEXEC O_CLOEXEC 456# define SFD_CLOEXEC O_CLOEXEC
425# else 457# else
426# define SFD_CLOEXEC 02000000 458# define SFD_CLOEXEC 02000000
427# endif 459# endif
428# endif 460# endif
429# ifdef __cplusplus
430extern "C" {
431# endif
432int signalfd (int fd, const sigset_t *mask, int flags); 461EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
433 462
434struct signalfd_siginfo 463struct signalfd_siginfo
435{ 464{
436 uint32_t ssi_signo; 465 uint32_t ssi_signo;
437 char pad[128 - sizeof (uint32_t)]; 466 char pad[128 - sizeof (uint32_t)];
438}; 467};
439# ifdef __cplusplus
440}
441# endif 468#endif
442#endif
443
444 469
445/**/ 470/**/
446 471
447#if EV_VERIFY >= 3 472#if EV_VERIFY >= 3
448# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 473# define EV_FREQUENT_CHECK ev_verify (EV_A)
449#else 474#else
450# define EV_FREQUENT_CHECK do { } while (0) 475# define EV_FREQUENT_CHECK do { } while (0)
451#endif 476#endif
452 477
453/* 478/*
454 * This is used to avoid floating point rounding problems. 479 * This is used to work around floating point rounding problems.
455 * It is added to ev_rt_now when scheduling periodics
456 * to ensure progress, time-wise, even when rounding
457 * errors are against us.
458 * This value is good at least till the year 4000. 480 * This value is good at least till the year 4000.
459 * Better solutions welcome.
460 */ 481 */
461#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 482#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
483/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
462 484
463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 485#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 486#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
465 487
488#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
489#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
490
491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
492/* ECB.H BEGIN */
493/*
494 * libecb - http://software.schmorp.de/pkg/libecb
495 *
496 * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de>
497 * Copyright (©) 2011 Emanuele Giaquinta
498 * All rights reserved.
499 *
500 * Redistribution and use in source and binary forms, with or without modifica-
501 * tion, are permitted provided that the following conditions are met:
502 *
503 * 1. Redistributions of source code must retain the above copyright notice,
504 * this list of conditions and the following disclaimer.
505 *
506 * 2. Redistributions in binary form must reproduce the above copyright
507 * notice, this list of conditions and the following disclaimer in the
508 * documentation and/or other materials provided with the distribution.
509 *
510 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
511 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
512 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
513 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
514 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
515 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
516 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
517 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
518 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
519 * OF THE POSSIBILITY OF SUCH DAMAGE.
520 *
521 * Alternatively, the contents of this file may be used under the terms of
522 * the GNU General Public License ("GPL") version 2 or any later version,
523 * in which case the provisions of the GPL are applicable instead of
524 * the above. If you wish to allow the use of your version of this file
525 * only under the terms of the GPL and not to allow others to use your
526 * version of this file under the BSD license, indicate your decision
527 * by deleting the provisions above and replace them with the notice
528 * and other provisions required by the GPL. If you do not delete the
529 * provisions above, a recipient may use your version of this file under
530 * either the BSD or the GPL.
531 */
532
533#ifndef ECB_H
534#define ECB_H
535
536/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010003
538
539#ifdef _WIN32
540 typedef signed char int8_t;
541 typedef unsigned char uint8_t;
542 typedef signed short int16_t;
543 typedef unsigned short uint16_t;
544 typedef signed int int32_t;
545 typedef unsigned int uint32_t;
466#if __GNUC__ >= 4 546 #if __GNUC__
467# define expect(expr,value) __builtin_expect ((expr),(value)) 547 typedef signed long long int64_t;
468# define noinline __attribute__ ((noinline)) 548 typedef unsigned long long uint64_t;
549 #else /* _MSC_VER || __BORLANDC__ */
550 typedef signed __int64 int64_t;
551 typedef unsigned __int64 uint64_t;
552 #endif
553 #ifdef _WIN64
554 #define ECB_PTRSIZE 8
555 typedef uint64_t uintptr_t;
556 typedef int64_t intptr_t;
557 #else
558 #define ECB_PTRSIZE 4
559 typedef uint32_t uintptr_t;
560 typedef int32_t intptr_t;
561 #endif
469#else 562#else
470# define expect(expr,value) (expr) 563 #include <inttypes.h>
471# define noinline 564 #if UINTMAX_MAX > 0xffffffffU
472# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 565 #define ECB_PTRSIZE 8
473# define inline 566 #else
567 #define ECB_PTRSIZE 4
568 #endif
474# endif 569#endif
570
571/* work around x32 idiocy by defining proper macros */
572#if __amd64 || __x86_64 || _M_AMD64 || _M_X64
573 #if _ILP32
574 #define ECB_AMD64_X32 1
575 #else
576 #define ECB_AMD64 1
475#endif 577 #endif
578#endif
476 579
580/* many compilers define _GNUC_ to some versions but then only implement
581 * what their idiot authors think are the "more important" extensions,
582 * causing enormous grief in return for some better fake benchmark numbers.
583 * or so.
584 * we try to detect these and simply assume they are not gcc - if they have
585 * an issue with that they should have done it right in the first place.
586 */
587#ifndef ECB_GCC_VERSION
588 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
589 #define ECB_GCC_VERSION(major,minor) 0
590 #else
591 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
592 #endif
593#endif
594
595#define ECB_CPP (__cplusplus+0)
596#define ECB_CPP11 (__cplusplus >= 201103L)
597
598#if ECB_CPP
599 #define ECB_C 0
600 #define ECB_STDC_VERSION 0
601#else
602 #define ECB_C 1
603 #define ECB_STDC_VERSION __STDC_VERSION__
604#endif
605
606#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
607#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
608
609#if ECB_CPP
610 #define ECB_EXTERN_C extern "C"
611 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
612 #define ECB_EXTERN_C_END }
613#else
614 #define ECB_EXTERN_C extern
615 #define ECB_EXTERN_C_BEG
616 #define ECB_EXTERN_C_END
617#endif
618
619/*****************************************************************************/
620
621/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
622/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
623
624#if ECB_NO_THREADS
625 #define ECB_NO_SMP 1
626#endif
627
628#if ECB_NO_SMP
629 #define ECB_MEMORY_FENCE do { } while (0)
630#endif
631
632#ifndef ECB_MEMORY_FENCE
633 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
634 #if __i386 || __i386__
635 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
636 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
637 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
638 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
639 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
640 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
641 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
642 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
643 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
644 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
645 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
646 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
647 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
648 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
649 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
650 #elif __aarch64__
651 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
652 #elif (__sparc || __sparc__) && !__sparcv8
653 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
654 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
655 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
656 #elif defined __s390__ || defined __s390x__
657 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
658 #elif defined __mips__
659 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
660 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
662 #elif defined __alpha__
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
664 #elif defined __hppa__
665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
666 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
667 #elif defined __ia64__
668 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
669 #elif defined __m68k__
670 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
671 #elif defined __m88k__
672 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
673 #elif defined __sh__
674 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
675 #endif
676 #endif
677#endif
678
679#ifndef ECB_MEMORY_FENCE
680 #if ECB_GCC_VERSION(4,7)
681 /* see comment below (stdatomic.h) about the C11 memory model. */
682 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
683 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
684 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
685
686 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
687 * without risking compile time errors with other compilers. We *could*
688 * define our own ecb_clang_has_feature, but I just can't be bothered to work
689 * around this shit time and again.
690 * #elif defined __clang && __has_feature (cxx_atomic)
691 * // see comment below (stdatomic.h) about the C11 memory model.
692 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
693 * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
694 * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
695 */
696
697 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
698 #define ECB_MEMORY_FENCE __sync_synchronize ()
699 #elif _MSC_VER >= 1500 /* VC++ 2008 */
700 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
701 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
702 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
703 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
704 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
705 #elif _MSC_VER >= 1400 /* VC++ 2005 */
706 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
707 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
708 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
709 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
710 #elif defined _WIN32
711 #include <WinNT.h>
712 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
713 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
714 #include <mbarrier.h>
715 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
716 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
717 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
718 #elif __xlC__
719 #define ECB_MEMORY_FENCE __sync ()
720 #endif
721#endif
722
723#ifndef ECB_MEMORY_FENCE
724 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
725 /* we assume that these memory fences work on all variables/all memory accesses, */
726 /* not just C11 atomics and atomic accesses */
727 #include <stdatomic.h>
728 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
729 /* any fence other than seq_cst, which isn't very efficient for us. */
730 /* Why that is, we don't know - either the C11 memory model is quite useless */
731 /* for most usages, or gcc and clang have a bug */
732 /* I *currently* lean towards the latter, and inefficiently implement */
733 /* all three of ecb's fences as a seq_cst fence */
734 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
735 /* for all __atomic_thread_fence's except seq_cst */
736 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
737 #endif
738#endif
739
740#ifndef ECB_MEMORY_FENCE
741 #if !ECB_AVOID_PTHREADS
742 /*
743 * if you get undefined symbol references to pthread_mutex_lock,
744 * or failure to find pthread.h, then you should implement
745 * the ECB_MEMORY_FENCE operations for your cpu/compiler
746 * OR provide pthread.h and link against the posix thread library
747 * of your system.
748 */
749 #include <pthread.h>
750 #define ECB_NEEDS_PTHREADS 1
751 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
752
753 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
754 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
755 #endif
756#endif
757
758#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
759 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
760#endif
761
762#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
763 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
764#endif
765
766/*****************************************************************************/
767
768#if __cplusplus
769 #define ecb_inline static inline
770#elif ECB_GCC_VERSION(2,5)
771 #define ecb_inline static __inline__
772#elif ECB_C99
773 #define ecb_inline static inline
774#else
775 #define ecb_inline static
776#endif
777
778#if ECB_GCC_VERSION(3,3)
779 #define ecb_restrict __restrict__
780#elif ECB_C99
781 #define ecb_restrict restrict
782#else
783 #define ecb_restrict
784#endif
785
786typedef int ecb_bool;
787
788#define ECB_CONCAT_(a, b) a ## b
789#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
790#define ECB_STRINGIFY_(a) # a
791#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
792
793#define ecb_function_ ecb_inline
794
795#if ECB_GCC_VERSION(3,1)
796 #define ecb_attribute(attrlist) __attribute__(attrlist)
797 #define ecb_is_constant(expr) __builtin_constant_p (expr)
798 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
799 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
800#else
801 #define ecb_attribute(attrlist)
802
803 /* possible C11 impl for integral types
804 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
805 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
806
807 #define ecb_is_constant(expr) 0
808 #define ecb_expect(expr,value) (expr)
809 #define ecb_prefetch(addr,rw,locality)
810#endif
811
812/* no emulation for ecb_decltype */
813#if ECB_GCC_VERSION(4,5)
814 #define ecb_decltype(x) __decltype(x)
815#elif ECB_GCC_VERSION(3,0)
816 #define ecb_decltype(x) __typeof(x)
817#endif
818
819#if _MSC_VER >= 1300
820 #define ecb_deprecated __declspec(deprecated)
821#else
822 #define ecb_deprecated ecb_attribute ((__deprecated__))
823#endif
824
825#define ecb_noinline ecb_attribute ((__noinline__))
826#define ecb_unused ecb_attribute ((__unused__))
827#define ecb_const ecb_attribute ((__const__))
828#define ecb_pure ecb_attribute ((__pure__))
829
830/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */
831#if ECB_C11
832 #define ecb_noreturn _Noreturn
833#else
834 #define ecb_noreturn ecb_attribute ((__noreturn__))
835#endif
836
837#if ECB_GCC_VERSION(4,3)
838 #define ecb_artificial ecb_attribute ((__artificial__))
839 #define ecb_hot ecb_attribute ((__hot__))
840 #define ecb_cold ecb_attribute ((__cold__))
841#else
842 #define ecb_artificial
843 #define ecb_hot
844 #define ecb_cold
845#endif
846
847/* put around conditional expressions if you are very sure that the */
848/* expression is mostly true or mostly false. note that these return */
849/* booleans, not the expression. */
477#define expect_false(expr) expect ((expr) != 0, 0) 850#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
478#define expect_true(expr) expect ((expr) != 0, 1) 851#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
852/* for compatibility to the rest of the world */
853#define ecb_likely(expr) ecb_expect_true (expr)
854#define ecb_unlikely(expr) ecb_expect_false (expr)
855
856/* count trailing zero bits and count # of one bits */
857#if ECB_GCC_VERSION(3,4)
858 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
859 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
860 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
861 #define ecb_ctz32(x) __builtin_ctz (x)
862 #define ecb_ctz64(x) __builtin_ctzll (x)
863 #define ecb_popcount32(x) __builtin_popcount (x)
864 /* no popcountll */
865#else
866 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
867 ecb_function_ int
868 ecb_ctz32 (uint32_t x)
869 {
870 int r = 0;
871
872 x &= ~x + 1; /* this isolates the lowest bit */
873
874#if ECB_branchless_on_i386
875 r += !!(x & 0xaaaaaaaa) << 0;
876 r += !!(x & 0xcccccccc) << 1;
877 r += !!(x & 0xf0f0f0f0) << 2;
878 r += !!(x & 0xff00ff00) << 3;
879 r += !!(x & 0xffff0000) << 4;
880#else
881 if (x & 0xaaaaaaaa) r += 1;
882 if (x & 0xcccccccc) r += 2;
883 if (x & 0xf0f0f0f0) r += 4;
884 if (x & 0xff00ff00) r += 8;
885 if (x & 0xffff0000) r += 16;
886#endif
887
888 return r;
889 }
890
891 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
892 ecb_function_ int
893 ecb_ctz64 (uint64_t x)
894 {
895 int shift = x & 0xffffffffU ? 0 : 32;
896 return ecb_ctz32 (x >> shift) + shift;
897 }
898
899 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
900 ecb_function_ int
901 ecb_popcount32 (uint32_t x)
902 {
903 x -= (x >> 1) & 0x55555555;
904 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
905 x = ((x >> 4) + x) & 0x0f0f0f0f;
906 x *= 0x01010101;
907
908 return x >> 24;
909 }
910
911 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
912 ecb_function_ int ecb_ld32 (uint32_t x)
913 {
914 int r = 0;
915
916 if (x >> 16) { x >>= 16; r += 16; }
917 if (x >> 8) { x >>= 8; r += 8; }
918 if (x >> 4) { x >>= 4; r += 4; }
919 if (x >> 2) { x >>= 2; r += 2; }
920 if (x >> 1) { r += 1; }
921
922 return r;
923 }
924
925 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
926 ecb_function_ int ecb_ld64 (uint64_t x)
927 {
928 int r = 0;
929
930 if (x >> 32) { x >>= 32; r += 32; }
931
932 return r + ecb_ld32 (x);
933 }
934#endif
935
936ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
937ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
938ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
939ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
940
941ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
942ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
943{
944 return ( (x * 0x0802U & 0x22110U)
945 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
946}
947
948ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
949ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
950{
951 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
952 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
953 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
954 x = ( x >> 8 ) | ( x << 8);
955
956 return x;
957}
958
959ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
960ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
961{
962 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
963 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
964 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
965 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
966 x = ( x >> 16 ) | ( x << 16);
967
968 return x;
969}
970
971/* popcount64 is only available on 64 bit cpus as gcc builtin */
972/* so for this version we are lazy */
973ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
974ecb_function_ int
975ecb_popcount64 (uint64_t x)
976{
977 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
978}
979
980ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
981ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
982ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
983ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
984ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
985ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
986ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
987ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
988
989ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
990ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
991ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
992ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
993ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
994ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
995ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
996ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
997
998#if ECB_GCC_VERSION(4,3)
999 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1000 #define ecb_bswap32(x) __builtin_bswap32 (x)
1001 #define ecb_bswap64(x) __builtin_bswap64 (x)
1002#else
1003 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
1004 ecb_function_ uint16_t
1005 ecb_bswap16 (uint16_t x)
1006 {
1007 return ecb_rotl16 (x, 8);
1008 }
1009
1010 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
1011 ecb_function_ uint32_t
1012 ecb_bswap32 (uint32_t x)
1013 {
1014 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1015 }
1016
1017 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
1018 ecb_function_ uint64_t
1019 ecb_bswap64 (uint64_t x)
1020 {
1021 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1022 }
1023#endif
1024
1025#if ECB_GCC_VERSION(4,5)
1026 #define ecb_unreachable() __builtin_unreachable ()
1027#else
1028 /* this seems to work fine, but gcc always emits a warning for it :/ */
1029 ecb_inline void ecb_unreachable (void) ecb_noreturn;
1030 ecb_inline void ecb_unreachable (void) { }
1031#endif
1032
1033/* try to tell the compiler that some condition is definitely true */
1034#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1035
1036ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
1037ecb_inline unsigned char
1038ecb_byteorder_helper (void)
1039{
1040 /* the union code still generates code under pressure in gcc, */
1041 /* but less than using pointers, and always seems to */
1042 /* successfully return a constant. */
1043 /* the reason why we have this horrible preprocessor mess */
1044 /* is to avoid it in all cases, at least on common architectures */
1045 /* or when using a recent enough gcc version (>= 4.6) */
1046#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1047 return 0x44;
1048#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1049 return 0x44;
1050#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1051 return 0x11;
1052#else
1053 union
1054 {
1055 uint32_t i;
1056 uint8_t c;
1057 } u = { 0x11223344 };
1058 return u.c;
1059#endif
1060}
1061
1062ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1063ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1064ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1065ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1066
1067#if ECB_GCC_VERSION(3,0) || ECB_C99
1068 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1069#else
1070 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1071#endif
1072
1073#if __cplusplus
1074 template<typename T>
1075 static inline T ecb_div_rd (T val, T div)
1076 {
1077 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1078 }
1079 template<typename T>
1080 static inline T ecb_div_ru (T val, T div)
1081 {
1082 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1083 }
1084#else
1085 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1086 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1087#endif
1088
1089#if ecb_cplusplus_does_not_suck
1090 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1091 template<typename T, int N>
1092 static inline int ecb_array_length (const T (&arr)[N])
1093 {
1094 return N;
1095 }
1096#else
1097 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1098#endif
1099
1100/*******************************************************************************/
1101/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1102
1103/* basically, everything uses "ieee pure-endian" floating point numbers */
1104/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1105#if 0 \
1106 || __i386 || __i386__ \
1107 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1108 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1109 || defined __s390__ || defined __s390x__ \
1110 || defined __mips__ \
1111 || defined __alpha__ \
1112 || defined __hppa__ \
1113 || defined __ia64__ \
1114 || defined __m68k__ \
1115 || defined __m88k__ \
1116 || defined __sh__ \
1117 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \
1118 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1119 || defined __aarch64__
1120 #define ECB_STDFP 1
1121 #include <string.h> /* for memcpy */
1122#else
1123 #define ECB_STDFP 0
1124#endif
1125
1126#ifndef ECB_NO_LIBM
1127
1128 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1129
1130 /* only the oldest of old doesn't have this one. solaris. */
1131 #ifdef INFINITY
1132 #define ECB_INFINITY INFINITY
1133 #else
1134 #define ECB_INFINITY HUGE_VAL
1135 #endif
1136
1137 #ifdef NAN
1138 #define ECB_NAN NAN
1139 #else
1140 #define ECB_NAN ECB_INFINITY
1141 #endif
1142
1143 /* converts an ieee half/binary16 to a float */
1144 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1145 ecb_function_ float
1146 ecb_binary16_to_float (uint16_t x)
1147 {
1148 int e = (x >> 10) & 0x1f;
1149 int m = x & 0x3ff;
1150 float r;
1151
1152 if (!e ) r = ldexpf (m , -24);
1153 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1154 else if (m ) r = ECB_NAN;
1155 else r = ECB_INFINITY;
1156
1157 return x & 0x8000 ? -r : r;
1158 }
1159
1160 /* convert a float to ieee single/binary32 */
1161 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1162 ecb_function_ uint32_t
1163 ecb_float_to_binary32 (float x)
1164 {
1165 uint32_t r;
1166
1167 #if ECB_STDFP
1168 memcpy (&r, &x, 4);
1169 #else
1170 /* slow emulation, works for anything but -0 */
1171 uint32_t m;
1172 int e;
1173
1174 if (x == 0e0f ) return 0x00000000U;
1175 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1176 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1177 if (x != x ) return 0x7fbfffffU;
1178
1179 m = frexpf (x, &e) * 0x1000000U;
1180
1181 r = m & 0x80000000U;
1182
1183 if (r)
1184 m = -m;
1185
1186 if (e <= -126)
1187 {
1188 m &= 0xffffffU;
1189 m >>= (-125 - e);
1190 e = -126;
1191 }
1192
1193 r |= (e + 126) << 23;
1194 r |= m & 0x7fffffU;
1195 #endif
1196
1197 return r;
1198 }
1199
1200 /* converts an ieee single/binary32 to a float */
1201 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1202 ecb_function_ float
1203 ecb_binary32_to_float (uint32_t x)
1204 {
1205 float r;
1206
1207 #if ECB_STDFP
1208 memcpy (&r, &x, 4);
1209 #else
1210 /* emulation, only works for normals and subnormals and +0 */
1211 int neg = x >> 31;
1212 int e = (x >> 23) & 0xffU;
1213
1214 x &= 0x7fffffU;
1215
1216 if (e)
1217 x |= 0x800000U;
1218 else
1219 e = 1;
1220
1221 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1222 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1223
1224 r = neg ? -r : r;
1225 #endif
1226
1227 return r;
1228 }
1229
1230 /* convert a double to ieee double/binary64 */
1231 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1232 ecb_function_ uint64_t
1233 ecb_double_to_binary64 (double x)
1234 {
1235 uint64_t r;
1236
1237 #if ECB_STDFP
1238 memcpy (&r, &x, 8);
1239 #else
1240 /* slow emulation, works for anything but -0 */
1241 uint64_t m;
1242 int e;
1243
1244 if (x == 0e0 ) return 0x0000000000000000U;
1245 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1246 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1247 if (x != x ) return 0X7ff7ffffffffffffU;
1248
1249 m = frexp (x, &e) * 0x20000000000000U;
1250
1251 r = m & 0x8000000000000000;;
1252
1253 if (r)
1254 m = -m;
1255
1256 if (e <= -1022)
1257 {
1258 m &= 0x1fffffffffffffU;
1259 m >>= (-1021 - e);
1260 e = -1022;
1261 }
1262
1263 r |= ((uint64_t)(e + 1022)) << 52;
1264 r |= m & 0xfffffffffffffU;
1265 #endif
1266
1267 return r;
1268 }
1269
1270 /* converts an ieee double/binary64 to a double */
1271 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1272 ecb_function_ double
1273 ecb_binary64_to_double (uint64_t x)
1274 {
1275 double r;
1276
1277 #if ECB_STDFP
1278 memcpy (&r, &x, 8);
1279 #else
1280 /* emulation, only works for normals and subnormals and +0 */
1281 int neg = x >> 63;
1282 int e = (x >> 52) & 0x7ffU;
1283
1284 x &= 0xfffffffffffffU;
1285
1286 if (e)
1287 x |= 0x10000000000000U;
1288 else
1289 e = 1;
1290
1291 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1292 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1293
1294 r = neg ? -r : r;
1295 #endif
1296
1297 return r;
1298 }
1299
1300#endif
1301
1302#endif
1303
1304/* ECB.H END */
1305
1306#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1307/* if your architecture doesn't need memory fences, e.g. because it is
1308 * single-cpu/core, or if you use libev in a project that doesn't use libev
1309 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1310 * libev, in which cases the memory fences become nops.
1311 * alternatively, you can remove this #error and link against libpthread,
1312 * which will then provide the memory fences.
1313 */
1314# error "memory fences not defined for your architecture, please report"
1315#endif
1316
1317#ifndef ECB_MEMORY_FENCE
1318# define ECB_MEMORY_FENCE do { } while (0)
1319# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1320# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1321#endif
1322
1323#define expect_false(cond) ecb_expect_false (cond)
1324#define expect_true(cond) ecb_expect_true (cond)
1325#define noinline ecb_noinline
1326
479#define inline_size static inline 1327#define inline_size ecb_inline
480 1328
481#if EV_MINIMAL 1329#if EV_FEATURE_CODE
1330# define inline_speed ecb_inline
1331#else
482# define inline_speed static noinline 1332# define inline_speed static noinline
483#else
484# define inline_speed static inline
485#endif 1333#endif
486 1334
487#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1335#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
488 1336
489#if EV_MINPRI == EV_MAXPRI 1337#if EV_MINPRI == EV_MAXPRI
… …
502#define ev_active(w) ((W)(w))->active 1350#define ev_active(w) ((W)(w))->active
503#define ev_at(w) ((WT)(w))->at 1351#define ev_at(w) ((WT)(w))->at
504 1352
505#if EV_USE_REALTIME 1353#if EV_USE_REALTIME
506/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1354/* sig_atomic_t is used to avoid per-thread variables or locking but still */
507/* giving it a reasonably high chance of working on typical architetcures */ 1355/* giving it a reasonably high chance of working on typical architectures */
508static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1356static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
509#endif 1357#endif
510 1358
511#if EV_USE_MONOTONIC 1359#if EV_USE_MONOTONIC
512static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1360static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
526# include "ev_win32.c" 1374# include "ev_win32.c"
527#endif 1375#endif
528 1376
529/*****************************************************************************/ 1377/*****************************************************************************/
530 1378
1379/* define a suitable floor function (only used by periodics atm) */
1380
1381#if EV_USE_FLOOR
1382# include <math.h>
1383# define ev_floor(v) floor (v)
1384#else
1385
1386#include <float.h>
1387
1388/* a floor() replacement function, should be independent of ev_tstamp type */
1389static ev_tstamp noinline
1390ev_floor (ev_tstamp v)
1391{
1392 /* the choice of shift factor is not terribly important */
1393#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1394 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1395#else
1396 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1397#endif
1398
1399 /* argument too large for an unsigned long? */
1400 if (expect_false (v >= shift))
1401 {
1402 ev_tstamp f;
1403
1404 if (v == v - 1.)
1405 return v; /* very large number */
1406
1407 f = shift * ev_floor (v * (1. / shift));
1408 return f + ev_floor (v - f);
1409 }
1410
1411 /* special treatment for negative args? */
1412 if (expect_false (v < 0.))
1413 {
1414 ev_tstamp f = -ev_floor (-v);
1415
1416 return f - (f == v ? 0 : 1);
1417 }
1418
1419 /* fits into an unsigned long */
1420 return (unsigned long)v;
1421}
1422
1423#endif
1424
1425/*****************************************************************************/
1426
1427#ifdef __linux
1428# include <sys/utsname.h>
1429#endif
1430
1431static unsigned int noinline ecb_cold
1432ev_linux_version (void)
1433{
1434#ifdef __linux
1435 unsigned int v = 0;
1436 struct utsname buf;
1437 int i;
1438 char *p = buf.release;
1439
1440 if (uname (&buf))
1441 return 0;
1442
1443 for (i = 3+1; --i; )
1444 {
1445 unsigned int c = 0;
1446
1447 for (;;)
1448 {
1449 if (*p >= '0' && *p <= '9')
1450 c = c * 10 + *p++ - '0';
1451 else
1452 {
1453 p += *p == '.';
1454 break;
1455 }
1456 }
1457
1458 v = (v << 8) | c;
1459 }
1460
1461 return v;
1462#else
1463 return 0;
1464#endif
1465}
1466
1467/*****************************************************************************/
1468
531#if EV_AVOID_STDIO 1469#if EV_AVOID_STDIO
532static void noinline 1470static void noinline ecb_cold
533ev_printerr (const char *msg) 1471ev_printerr (const char *msg)
534{ 1472{
535 write (STDERR_FILENO, msg, strlen (msg)); 1473 write (STDERR_FILENO, msg, strlen (msg));
536} 1474}
537#endif 1475#endif
538 1476
539static void (*syserr_cb)(const char *msg); 1477static void (*syserr_cb)(const char *msg) EV_THROW;
540 1478
541void 1479void ecb_cold
542ev_set_syserr_cb (void (*cb)(const char *msg)) 1480ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
543{ 1481{
544 syserr_cb = cb; 1482 syserr_cb = cb;
545} 1483}
546 1484
547static void noinline 1485static void noinline ecb_cold
548ev_syserr (const char *msg) 1486ev_syserr (const char *msg)
549{ 1487{
550 if (!msg) 1488 if (!msg)
551 msg = "(libev) system error"; 1489 msg = "(libev) system error";
552 1490
553 if (syserr_cb) 1491 if (syserr_cb)
554 syserr_cb (msg); 1492 syserr_cb (msg);
555 else 1493 else
556 { 1494 {
557#if EV_AVOID_STDIO 1495#if EV_AVOID_STDIO
558 const char *err = strerror (errno);
559
560 ev_printerr (msg); 1496 ev_printerr (msg);
561 ev_printerr (": "); 1497 ev_printerr (": ");
562 ev_printerr (err); 1498 ev_printerr (strerror (errno));
563 ev_printerr ("\n"); 1499 ev_printerr ("\n");
564#else 1500#else
565 perror (msg); 1501 perror (msg);
566#endif 1502#endif
567 abort (); 1503 abort ();
568 } 1504 }
569} 1505}
570 1506
571static void * 1507static void *
572ev_realloc_emul (void *ptr, long size) 1508ev_realloc_emul (void *ptr, long size) EV_THROW
573{ 1509{
574#if __GLIBC__
575 return realloc (ptr, size);
576#else
577 /* some systems, notably openbsd and darwin, fail to properly 1510 /* some systems, notably openbsd and darwin, fail to properly
578 * implement realloc (x, 0) (as required by both ansi c-89 and 1511 * implement realloc (x, 0) (as required by both ansi c-89 and
579 * the single unix specification, so work around them here. 1512 * the single unix specification, so work around them here.
1513 * recently, also (at least) fedora and debian started breaking it,
1514 * despite documenting it otherwise.
580 */ 1515 */
581 1516
582 if (size) 1517 if (size)
583 return realloc (ptr, size); 1518 return realloc (ptr, size);
584 1519
585 free (ptr); 1520 free (ptr);
586 return 0; 1521 return 0;
587#endif
588} 1522}
589 1523
590static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1524static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
591 1525
592void 1526void ecb_cold
593ev_set_allocator (void *(*cb)(void *ptr, long size)) 1527ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
594{ 1528{
595 alloc = cb; 1529 alloc = cb;
596} 1530}
597 1531
598inline_speed void * 1532inline_speed void *
… …
601 ptr = alloc (ptr, size); 1535 ptr = alloc (ptr, size);
602 1536
603 if (!ptr && size) 1537 if (!ptr && size)
604 { 1538 {
605#if EV_AVOID_STDIO 1539#if EV_AVOID_STDIO
606 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1540 ev_printerr ("(libev) memory allocation failed, aborting.\n");
607#else 1541#else
608 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1542 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
609#endif 1543#endif
610 abort (); 1544 abort ();
611 } 1545 }
612 1546
613 return ptr; 1547 return ptr;
… …
630 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1564 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
631 unsigned char unused; 1565 unsigned char unused;
632#if EV_USE_EPOLL 1566#if EV_USE_EPOLL
633 unsigned int egen; /* generation counter to counter epoll bugs */ 1567 unsigned int egen; /* generation counter to counter epoll bugs */
634#endif 1568#endif
635#if EV_SELECT_IS_WINSOCKET 1569#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
636 SOCKET handle; 1570 SOCKET handle;
1571#endif
1572#if EV_USE_IOCP
1573 OVERLAPPED or, ow;
637#endif 1574#endif
638} ANFD; 1575} ANFD;
639 1576
640/* stores the pending event set for a given watcher */ 1577/* stores the pending event set for a given watcher */
641typedef struct 1578typedef struct
… …
683 #undef VAR 1620 #undef VAR
684 }; 1621 };
685 #include "ev_wrap.h" 1622 #include "ev_wrap.h"
686 1623
687 static struct ev_loop default_loop_struct; 1624 static struct ev_loop default_loop_struct;
688 struct ev_loop *ev_default_loop_ptr; 1625 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
689 1626
690#else 1627#else
691 1628
692 ev_tstamp ev_rt_now; 1629 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
693 #define VAR(name,decl) static decl; 1630 #define VAR(name,decl) static decl;
694 #include "ev_vars.h" 1631 #include "ev_vars.h"
695 #undef VAR 1632 #undef VAR
696 1633
697 static int ev_default_loop_ptr; 1634 static int ev_default_loop_ptr;
698 1635
699#endif 1636#endif
700 1637
701#if EV_MINIMAL < 2 1638#if EV_FEATURE_API
702# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1639# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
703# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1640# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
704# define EV_INVOKE_PENDING invoke_cb (EV_A) 1641# define EV_INVOKE_PENDING invoke_cb (EV_A)
705#else 1642#else
706# define EV_RELEASE_CB (void)0 1643# define EV_RELEASE_CB (void)0
707# define EV_ACQUIRE_CB (void)0 1644# define EV_ACQUIRE_CB (void)0
708# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1645# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
709#endif 1646#endif
710 1647
711#define EVUNLOOP_RECURSE 0x80 1648#define EVBREAK_RECURSE 0x80
712 1649
713/*****************************************************************************/ 1650/*****************************************************************************/
714 1651
715#ifndef EV_HAVE_EV_TIME 1652#ifndef EV_HAVE_EV_TIME
716ev_tstamp 1653ev_tstamp
717ev_time (void) 1654ev_time (void) EV_THROW
718{ 1655{
719#if EV_USE_REALTIME 1656#if EV_USE_REALTIME
720 if (expect_true (have_realtime)) 1657 if (expect_true (have_realtime))
721 { 1658 {
722 struct timespec ts; 1659 struct timespec ts;
… …
746 return ev_time (); 1683 return ev_time ();
747} 1684}
748 1685
749#if EV_MULTIPLICITY 1686#if EV_MULTIPLICITY
750ev_tstamp 1687ev_tstamp
751ev_now (EV_P) 1688ev_now (EV_P) EV_THROW
752{ 1689{
753 return ev_rt_now; 1690 return ev_rt_now;
754} 1691}
755#endif 1692#endif
756 1693
757void 1694void
758ev_sleep (ev_tstamp delay) 1695ev_sleep (ev_tstamp delay) EV_THROW
759{ 1696{
760 if (delay > 0.) 1697 if (delay > 0.)
761 { 1698 {
762#if EV_USE_NANOSLEEP 1699#if EV_USE_NANOSLEEP
763 struct timespec ts; 1700 struct timespec ts;
764 1701
765 ts.tv_sec = (time_t)delay; 1702 EV_TS_SET (ts, delay);
766 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
767
768 nanosleep (&ts, 0); 1703 nanosleep (&ts, 0);
769#elif defined(_WIN32) 1704#elif defined _WIN32
770 Sleep ((unsigned long)(delay * 1e3)); 1705 Sleep ((unsigned long)(delay * 1e3));
771#else 1706#else
772 struct timeval tv; 1707 struct timeval tv;
773 1708
774 tv.tv_sec = (time_t)delay;
775 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
776
777 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1709 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
778 /* something not guaranteed by newer posix versions, but guaranteed */ 1710 /* something not guaranteed by newer posix versions, but guaranteed */
779 /* by older ones */ 1711 /* by older ones */
1712 EV_TV_SET (tv, delay);
780 select (0, 0, 0, 0, &tv); 1713 select (0, 0, 0, 0, &tv);
781#endif 1714#endif
782 } 1715 }
783} 1716}
784 1717
785/*****************************************************************************/ 1718/*****************************************************************************/
786 1719
787#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1720#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
788 1721
789/* find a suitable new size for the given array, */ 1722/* find a suitable new size for the given array, */
790/* hopefully by rounding to a ncie-to-malloc size */ 1723/* hopefully by rounding to a nice-to-malloc size */
791inline_size int 1724inline_size int
792array_nextsize (int elem, int cur, int cnt) 1725array_nextsize (int elem, int cur, int cnt)
793{ 1726{
794 int ncur = cur + 1; 1727 int ncur = cur + 1;
795 1728
796 do 1729 do
797 ncur <<= 1; 1730 ncur <<= 1;
798 while (cnt > ncur); 1731 while (cnt > ncur);
799 1732
800 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1733 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
801 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1734 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
802 { 1735 {
803 ncur *= elem; 1736 ncur *= elem;
804 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1737 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
805 ncur = ncur - sizeof (void *) * 4; 1738 ncur = ncur - sizeof (void *) * 4;
… …
807 } 1740 }
808 1741
809 return ncur; 1742 return ncur;
810} 1743}
811 1744
812static noinline void * 1745static void * noinline ecb_cold
813array_realloc (int elem, void *base, int *cur, int cnt) 1746array_realloc (int elem, void *base, int *cur, int cnt)
814{ 1747{
815 *cur = array_nextsize (elem, *cur, cnt); 1748 *cur = array_nextsize (elem, *cur, cnt);
816 return ev_realloc (base, elem * *cur); 1749 return ev_realloc (base, elem * *cur);
817} 1750}
… …
820 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1753 memset ((void *)(base), 0, sizeof (*(base)) * (count))
821 1754
822#define array_needsize(type,base,cur,cnt,init) \ 1755#define array_needsize(type,base,cur,cnt,init) \
823 if (expect_false ((cnt) > (cur))) \ 1756 if (expect_false ((cnt) > (cur))) \
824 { \ 1757 { \
825 int ocur_ = (cur); \ 1758 int ecb_unused ocur_ = (cur); \
826 (base) = (type *)array_realloc \ 1759 (base) = (type *)array_realloc \
827 (sizeof (type), (base), &(cur), (cnt)); \ 1760 (sizeof (type), (base), &(cur), (cnt)); \
828 init ((base) + (ocur_), (cur) - ocur_); \ 1761 init ((base) + (ocur_), (cur) - ocur_); \
829 } 1762 }
830 1763
… …
848pendingcb (EV_P_ ev_prepare *w, int revents) 1781pendingcb (EV_P_ ev_prepare *w, int revents)
849{ 1782{
850} 1783}
851 1784
852void noinline 1785void noinline
853ev_feed_event (EV_P_ void *w, int revents) 1786ev_feed_event (EV_P_ void *w, int revents) EV_THROW
854{ 1787{
855 W w_ = (W)w; 1788 W w_ = (W)w;
856 int pri = ABSPRI (w_); 1789 int pri = ABSPRI (w_);
857 1790
858 if (expect_false (w_->pending)) 1791 if (expect_false (w_->pending))
… …
862 w_->pending = ++pendingcnt [pri]; 1795 w_->pending = ++pendingcnt [pri];
863 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1796 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
864 pendings [pri][w_->pending - 1].w = w_; 1797 pendings [pri][w_->pending - 1].w = w_;
865 pendings [pri][w_->pending - 1].events = revents; 1798 pendings [pri][w_->pending - 1].events = revents;
866 } 1799 }
1800
1801 pendingpri = NUMPRI - 1;
867} 1802}
868 1803
869inline_speed void 1804inline_speed void
870feed_reverse (EV_P_ W w) 1805feed_reverse (EV_P_ W w)
871{ 1806{
… …
917 if (expect_true (!anfd->reify)) 1852 if (expect_true (!anfd->reify))
918 fd_event_nocheck (EV_A_ fd, revents); 1853 fd_event_nocheck (EV_A_ fd, revents);
919} 1854}
920 1855
921void 1856void
922ev_feed_fd_event (EV_P_ int fd, int revents) 1857ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
923{ 1858{
924 if (fd >= 0 && fd < anfdmax) 1859 if (fd >= 0 && fd < anfdmax)
925 fd_event_nocheck (EV_A_ fd, revents); 1860 fd_event_nocheck (EV_A_ fd, revents);
926} 1861}
927 1862
… …
930inline_size void 1865inline_size void
931fd_reify (EV_P) 1866fd_reify (EV_P)
932{ 1867{
933 int i; 1868 int i;
934 1869
1870#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1871 for (i = 0; i < fdchangecnt; ++i)
1872 {
1873 int fd = fdchanges [i];
1874 ANFD *anfd = anfds + fd;
1875
1876 if (anfd->reify & EV__IOFDSET && anfd->head)
1877 {
1878 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1879
1880 if (handle != anfd->handle)
1881 {
1882 unsigned long arg;
1883
1884 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1885
1886 /* handle changed, but fd didn't - we need to do it in two steps */
1887 backend_modify (EV_A_ fd, anfd->events, 0);
1888 anfd->events = 0;
1889 anfd->handle = handle;
1890 }
1891 }
1892 }
1893#endif
1894
935 for (i = 0; i < fdchangecnt; ++i) 1895 for (i = 0; i < fdchangecnt; ++i)
936 { 1896 {
937 int fd = fdchanges [i]; 1897 int fd = fdchanges [i];
938 ANFD *anfd = anfds + fd; 1898 ANFD *anfd = anfds + fd;
939 ev_io *w; 1899 ev_io *w;
940 1900
941 unsigned char events = 0; 1901 unsigned char o_events = anfd->events;
1902 unsigned char o_reify = anfd->reify;
942 1903
943 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1904 anfd->reify = 0;
944 events |= (unsigned char)w->events;
945 1905
946#if EV_SELECT_IS_WINSOCKET 1906 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
947 if (events)
948 { 1907 {
949 unsigned long arg; 1908 anfd->events = 0;
950 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1909
951 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1910 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1911 anfd->events |= (unsigned char)w->events;
1912
1913 if (o_events != anfd->events)
1914 o_reify = EV__IOFDSET; /* actually |= */
952 } 1915 }
953#endif
954 1916
955 { 1917 if (o_reify & EV__IOFDSET)
956 unsigned char o_events = anfd->events;
957 unsigned char o_reify = anfd->reify;
958
959 anfd->reify = 0;
960 anfd->events = events;
961
962 if (o_events != events || o_reify & EV__IOFDSET)
963 backend_modify (EV_A_ fd, o_events, events); 1918 backend_modify (EV_A_ fd, o_events, anfd->events);
964 }
965 } 1919 }
966 1920
967 fdchangecnt = 0; 1921 fdchangecnt = 0;
968} 1922}
969 1923
… …
981 fdchanges [fdchangecnt - 1] = fd; 1935 fdchanges [fdchangecnt - 1] = fd;
982 } 1936 }
983} 1937}
984 1938
985/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1939/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
986inline_speed void 1940inline_speed void ecb_cold
987fd_kill (EV_P_ int fd) 1941fd_kill (EV_P_ int fd)
988{ 1942{
989 ev_io *w; 1943 ev_io *w;
990 1944
991 while ((w = (ev_io *)anfds [fd].head)) 1945 while ((w = (ev_io *)anfds [fd].head))
… …
994 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1948 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
995 } 1949 }
996} 1950}
997 1951
998/* check whether the given fd is actually valid, for error recovery */ 1952/* check whether the given fd is actually valid, for error recovery */
999inline_size int 1953inline_size int ecb_cold
1000fd_valid (int fd) 1954fd_valid (int fd)
1001{ 1955{
1002#ifdef _WIN32 1956#ifdef _WIN32
1003 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1957 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1004#else 1958#else
1005 return fcntl (fd, F_GETFD) != -1; 1959 return fcntl (fd, F_GETFD) != -1;
1006#endif 1960#endif
1007} 1961}
1008 1962
1009/* called on EBADF to verify fds */ 1963/* called on EBADF to verify fds */
1010static void noinline 1964static void noinline ecb_cold
1011fd_ebadf (EV_P) 1965fd_ebadf (EV_P)
1012{ 1966{
1013 int fd; 1967 int fd;
1014 1968
1015 for (fd = 0; fd < anfdmax; ++fd) 1969 for (fd = 0; fd < anfdmax; ++fd)
… …
1017 if (!fd_valid (fd) && errno == EBADF) 1971 if (!fd_valid (fd) && errno == EBADF)
1018 fd_kill (EV_A_ fd); 1972 fd_kill (EV_A_ fd);
1019} 1973}
1020 1974
1021/* called on ENOMEM in select/poll to kill some fds and retry */ 1975/* called on ENOMEM in select/poll to kill some fds and retry */
1022static void noinline 1976static void noinline ecb_cold
1023fd_enomem (EV_P) 1977fd_enomem (EV_P)
1024{ 1978{
1025 int fd; 1979 int fd;
1026 1980
1027 for (fd = anfdmax; fd--; ) 1981 for (fd = anfdmax; fd--; )
… …
1062} 2016}
1063 2017
1064/*****************************************************************************/ 2018/*****************************************************************************/
1065 2019
1066/* 2020/*
1067 * the heap functions want a real array index. array index 0 uis guaranteed to not 2021 * the heap functions want a real array index. array index 0 is guaranteed to not
1068 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2022 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1069 * the branching factor of the d-tree. 2023 * the branching factor of the d-tree.
1070 */ 2024 */
1071 2025
1072/* 2026/*
… …
1222 2176
1223/*****************************************************************************/ 2177/*****************************************************************************/
1224 2178
1225#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2179#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1226 2180
1227static void noinline 2181static void noinline ecb_cold
1228evpipe_init (EV_P) 2182evpipe_init (EV_P)
1229{ 2183{
1230 if (!ev_is_active (&pipe_w)) 2184 if (!ev_is_active (&pipe_w))
1231 { 2185 {
2186 int fds [2];
2187
1232# if EV_USE_EVENTFD 2188# if EV_USE_EVENTFD
2189 fds [0] = -1;
1233 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2190 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1234 if (evfd < 0 && errno == EINVAL) 2191 if (fds [1] < 0 && errno == EINVAL)
1235 evfd = eventfd (0, 0); 2192 fds [1] = eventfd (0, 0);
1236 2193
1237 if (evfd >= 0) 2194 if (fds [1] < 0)
2195# endif
1238 { 2196 {
2197 while (pipe (fds))
2198 ev_syserr ("(libev) error creating signal/async pipe");
2199
2200 fd_intern (fds [0]);
2201 }
2202
1239 evpipe [0] = -1; 2203 evpipe [0] = fds [0];
1240 fd_intern (evfd); /* doing it twice doesn't hurt */ 2204
1241 ev_io_set (&pipe_w, evfd, EV_READ); 2205 if (evpipe [1] < 0)
2206 evpipe [1] = fds [1]; /* first call, set write fd */
2207 else
2208 {
2209 /* on subsequent calls, do not change evpipe [1] */
2210 /* so that evpipe_write can always rely on its value. */
2211 /* this branch does not do anything sensible on windows, */
2212 /* so must not be executed on windows */
2213
2214 dup2 (fds [1], evpipe [1]);
2215 close (fds [1]);
2216 }
2217
2218 fd_intern (evpipe [1]);
2219
2220 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2221 ev_io_start (EV_A_ &pipe_w);
2222 ev_unref (EV_A); /* watcher should not keep loop alive */
2223 }
2224}
2225
2226inline_speed void
2227evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2228{
2229 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2230
2231 if (expect_true (*flag))
2232 return;
2233
2234 *flag = 1;
2235 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2236
2237 pipe_write_skipped = 1;
2238
2239 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2240
2241 if (pipe_write_wanted)
2242 {
2243 int old_errno;
2244
2245 pipe_write_skipped = 0;
2246 ECB_MEMORY_FENCE_RELEASE;
2247
2248 old_errno = errno; /* save errno because write will clobber it */
2249
2250#if EV_USE_EVENTFD
2251 if (evpipe [0] < 0)
2252 {
2253 uint64_t counter = 1;
2254 write (evpipe [1], &counter, sizeof (uint64_t));
1242 } 2255 }
1243 else 2256 else
1244# endif 2257#endif
1245 { 2258 {
1246 while (pipe (evpipe)) 2259#ifdef _WIN32
1247 ev_syserr ("(libev) error creating signal/async pipe"); 2260 WSABUF buf;
1248 2261 DWORD sent;
1249 fd_intern (evpipe [0]); 2262 buf.buf = &buf;
1250 fd_intern (evpipe [1]); 2263 buf.len = 1;
1251 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2264 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2265#else
2266 write (evpipe [1], &(evpipe [1]), 1);
2267#endif
1252 } 2268 }
1253
1254 ev_io_start (EV_A_ &pipe_w);
1255 ev_unref (EV_A); /* watcher should not keep loop alive */
1256 }
1257}
1258
1259inline_size void
1260evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1261{
1262 if (!*flag)
1263 {
1264 int old_errno = errno; /* save errno because write might clobber it */
1265 char dummy;
1266
1267 *flag = 1;
1268
1269#if EV_USE_EVENTFD
1270 if (evfd >= 0)
1271 {
1272 uint64_t counter = 1;
1273 write (evfd, &counter, sizeof (uint64_t));
1274 }
1275 else
1276#endif
1277 write (evpipe [1], &dummy, 1);
1278 2269
1279 errno = old_errno; 2270 errno = old_errno;
1280 } 2271 }
1281} 2272}
1282 2273
… …
1285static void 2276static void
1286pipecb (EV_P_ ev_io *iow, int revents) 2277pipecb (EV_P_ ev_io *iow, int revents)
1287{ 2278{
1288 int i; 2279 int i;
1289 2280
2281 if (revents & EV_READ)
2282 {
1290#if EV_USE_EVENTFD 2283#if EV_USE_EVENTFD
1291 if (evfd >= 0) 2284 if (evpipe [0] < 0)
1292 { 2285 {
1293 uint64_t counter; 2286 uint64_t counter;
1294 read (evfd, &counter, sizeof (uint64_t)); 2287 read (evpipe [1], &counter, sizeof (uint64_t));
1295 } 2288 }
1296 else 2289 else
1297#endif 2290#endif
1298 { 2291 {
1299 char dummy; 2292 char dummy[4];
2293#ifdef _WIN32
2294 WSABUF buf;
2295 DWORD recvd;
2296 DWORD flags = 0;
2297 buf.buf = dummy;
2298 buf.len = sizeof (dummy);
2299 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2300#else
1300 read (evpipe [0], &dummy, 1); 2301 read (evpipe [0], &dummy, sizeof (dummy));
2302#endif
2303 }
1301 } 2304 }
1302 2305
2306 pipe_write_skipped = 0;
2307
2308 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2309
2310#if EV_SIGNAL_ENABLE
1303 if (sig_pending) 2311 if (sig_pending)
1304 { 2312 {
1305 sig_pending = 0; 2313 sig_pending = 0;
2314
2315 ECB_MEMORY_FENCE;
1306 2316
1307 for (i = EV_NSIG - 1; i--; ) 2317 for (i = EV_NSIG - 1; i--; )
1308 if (expect_false (signals [i].pending)) 2318 if (expect_false (signals [i].pending))
1309 ev_feed_signal_event (EV_A_ i + 1); 2319 ev_feed_signal_event (EV_A_ i + 1);
1310 } 2320 }
2321#endif
1311 2322
1312#if EV_ASYNC_ENABLE 2323#if EV_ASYNC_ENABLE
1313 if (async_pending) 2324 if (async_pending)
1314 { 2325 {
1315 async_pending = 0; 2326 async_pending = 0;
2327
2328 ECB_MEMORY_FENCE;
1316 2329
1317 for (i = asynccnt; i--; ) 2330 for (i = asynccnt; i--; )
1318 if (asyncs [i]->sent) 2331 if (asyncs [i]->sent)
1319 { 2332 {
1320 asyncs [i]->sent = 0; 2333 asyncs [i]->sent = 0;
2334 ECB_MEMORY_FENCE_RELEASE;
1321 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2335 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1322 } 2336 }
1323 } 2337 }
1324#endif 2338#endif
1325} 2339}
1326 2340
1327/*****************************************************************************/ 2341/*****************************************************************************/
1328 2342
2343void
2344ev_feed_signal (int signum) EV_THROW
2345{
2346#if EV_MULTIPLICITY
2347 EV_P;
2348 ECB_MEMORY_FENCE_ACQUIRE;
2349 EV_A = signals [signum - 1].loop;
2350
2351 if (!EV_A)
2352 return;
2353#endif
2354
2355 signals [signum - 1].pending = 1;
2356 evpipe_write (EV_A_ &sig_pending);
2357}
2358
1329static void 2359static void
1330ev_sighandler (int signum) 2360ev_sighandler (int signum)
1331{ 2361{
1332#if EV_MULTIPLICITY
1333 EV_P = signals [signum - 1].loop;
1334#endif
1335
1336#ifdef _WIN32 2362#ifdef _WIN32
1337 signal (signum, ev_sighandler); 2363 signal (signum, ev_sighandler);
1338#endif 2364#endif
1339 2365
1340 signals [signum - 1].pending = 1; 2366 ev_feed_signal (signum);
1341 evpipe_write (EV_A_ &sig_pending);
1342} 2367}
1343 2368
1344void noinline 2369void noinline
1345ev_feed_signal_event (EV_P_ int signum) 2370ev_feed_signal_event (EV_P_ int signum) EV_THROW
1346{ 2371{
1347 WL w; 2372 WL w;
1348 2373
1349 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2374 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1350 return; 2375 return;
1351 2376
1352 --signum; 2377 --signum;
1353 2378
1354#if EV_MULTIPLICITY 2379#if EV_MULTIPLICITY
… …
1358 if (expect_false (signals [signum].loop != EV_A)) 2383 if (expect_false (signals [signum].loop != EV_A))
1359 return; 2384 return;
1360#endif 2385#endif
1361 2386
1362 signals [signum].pending = 0; 2387 signals [signum].pending = 0;
2388 ECB_MEMORY_FENCE_RELEASE;
1363 2389
1364 for (w = signals [signum].head; w; w = w->next) 2390 for (w = signals [signum].head; w; w = w->next)
1365 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2391 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1366} 2392}
1367 2393
… …
1403child_reap (EV_P_ int chain, int pid, int status) 2429child_reap (EV_P_ int chain, int pid, int status)
1404{ 2430{
1405 ev_child *w; 2431 ev_child *w;
1406 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2432 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1407 2433
1408 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2434 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1409 { 2435 {
1410 if ((w->pid == pid || !w->pid) 2436 if ((w->pid == pid || !w->pid)
1411 && (!traced || (w->flags & 1))) 2437 && (!traced || (w->flags & 1)))
1412 { 2438 {
1413 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2439 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1438 /* make sure we are called again until all children have been reaped */ 2464 /* make sure we are called again until all children have been reaped */
1439 /* we need to do it this way so that the callback gets called before we continue */ 2465 /* we need to do it this way so that the callback gets called before we continue */
1440 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2466 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1441 2467
1442 child_reap (EV_A_ pid, pid, status); 2468 child_reap (EV_A_ pid, pid, status);
1443 if (EV_PID_HASHSIZE > 1) 2469 if ((EV_PID_HASHSIZE) > 1)
1444 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2470 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1445} 2471}
1446 2472
1447#endif 2473#endif
1448 2474
1449/*****************************************************************************/ 2475/*****************************************************************************/
1450 2476
2477#if EV_USE_IOCP
2478# include "ev_iocp.c"
2479#endif
1451#if EV_USE_PORT 2480#if EV_USE_PORT
1452# include "ev_port.c" 2481# include "ev_port.c"
1453#endif 2482#endif
1454#if EV_USE_KQUEUE 2483#if EV_USE_KQUEUE
1455# include "ev_kqueue.c" 2484# include "ev_kqueue.c"
… …
1462#endif 2491#endif
1463#if EV_USE_SELECT 2492#if EV_USE_SELECT
1464# include "ev_select.c" 2493# include "ev_select.c"
1465#endif 2494#endif
1466 2495
1467int 2496int ecb_cold
1468ev_version_major (void) 2497ev_version_major (void) EV_THROW
1469{ 2498{
1470 return EV_VERSION_MAJOR; 2499 return EV_VERSION_MAJOR;
1471} 2500}
1472 2501
1473int 2502int ecb_cold
1474ev_version_minor (void) 2503ev_version_minor (void) EV_THROW
1475{ 2504{
1476 return EV_VERSION_MINOR; 2505 return EV_VERSION_MINOR;
1477} 2506}
1478 2507
1479/* return true if we are running with elevated privileges and should ignore env variables */ 2508/* return true if we are running with elevated privileges and should ignore env variables */
1480int inline_size 2509int inline_size ecb_cold
1481enable_secure (void) 2510enable_secure (void)
1482{ 2511{
1483#ifdef _WIN32 2512#ifdef _WIN32
1484 return 0; 2513 return 0;
1485#else 2514#else
1486 return getuid () != geteuid () 2515 return getuid () != geteuid ()
1487 || getgid () != getegid (); 2516 || getgid () != getegid ();
1488#endif 2517#endif
1489} 2518}
1490 2519
1491unsigned int 2520unsigned int ecb_cold
1492ev_supported_backends (void) 2521ev_supported_backends (void) EV_THROW
1493{ 2522{
1494 unsigned int flags = 0; 2523 unsigned int flags = 0;
1495 2524
1496 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2525 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1497 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2526 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1500 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2529 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1501 2530
1502 return flags; 2531 return flags;
1503} 2532}
1504 2533
1505unsigned int 2534unsigned int ecb_cold
1506ev_recommended_backends (void) 2535ev_recommended_backends (void) EV_THROW
1507{ 2536{
1508 unsigned int flags = ev_supported_backends (); 2537 unsigned int flags = ev_supported_backends ();
1509 2538
1510#ifndef __NetBSD__ 2539#ifndef __NetBSD__
1511 /* kqueue is borked on everything but netbsd apparently */ 2540 /* kqueue is borked on everything but netbsd apparently */
… …
1515#ifdef __APPLE__ 2544#ifdef __APPLE__
1516 /* only select works correctly on that "unix-certified" platform */ 2545 /* only select works correctly on that "unix-certified" platform */
1517 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2546 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1518 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2547 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1519#endif 2548#endif
2549#ifdef __FreeBSD__
2550 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2551#endif
1520 2552
1521 return flags; 2553 return flags;
1522} 2554}
1523 2555
2556unsigned int ecb_cold
2557ev_embeddable_backends (void) EV_THROW
2558{
2559 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2560
2561 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2562 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2563 flags &= ~EVBACKEND_EPOLL;
2564
2565 return flags;
2566}
2567
1524unsigned int 2568unsigned int
1525ev_embeddable_backends (void) 2569ev_backend (EV_P) EV_THROW
1526{ 2570{
1527 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2571 return backend;
1528
1529 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1530 /* please fix it and tell me how to detect the fix */
1531 flags &= ~EVBACKEND_EPOLL;
1532
1533 return flags;
1534} 2572}
1535 2573
2574#if EV_FEATURE_API
1536unsigned int 2575unsigned int
1537ev_backend (EV_P) 2576ev_iteration (EV_P) EV_THROW
1538{ 2577{
1539 return backend; 2578 return loop_count;
1540} 2579}
1541 2580
1542#if EV_MINIMAL < 2
1543unsigned int 2581unsigned int
1544ev_loop_count (EV_P) 2582ev_depth (EV_P) EV_THROW
1545{
1546 return loop_count;
1547}
1548
1549unsigned int
1550ev_loop_depth (EV_P)
1551{ 2583{
1552 return loop_depth; 2584 return loop_depth;
1553} 2585}
1554 2586
1555void 2587void
1556ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2588ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1557{ 2589{
1558 io_blocktime = interval; 2590 io_blocktime = interval;
1559} 2591}
1560 2592
1561void 2593void
1562ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2594ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1563{ 2595{
1564 timeout_blocktime = interval; 2596 timeout_blocktime = interval;
1565} 2597}
1566 2598
1567void 2599void
1568ev_set_userdata (EV_P_ void *data) 2600ev_set_userdata (EV_P_ void *data) EV_THROW
1569{ 2601{
1570 userdata = data; 2602 userdata = data;
1571} 2603}
1572 2604
1573void * 2605void *
1574ev_userdata (EV_P) 2606ev_userdata (EV_P) EV_THROW
1575{ 2607{
1576 return userdata; 2608 return userdata;
1577} 2609}
1578 2610
2611void
1579void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2612ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1580{ 2613{
1581 invoke_cb = invoke_pending_cb; 2614 invoke_cb = invoke_pending_cb;
1582} 2615}
1583 2616
1584void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2617void
2618ev_set_loop_release_cb (EV_P_ ev_loop_callback EV_THROW release, ev_loop_callback EV_THROW acquire) EV_THROW
1585{ 2619{
1586 release_cb = release; 2620 release_cb = release;
1587 acquire_cb = acquire; 2621 acquire_cb = acquire;
1588} 2622}
1589#endif 2623#endif
1590 2624
1591/* initialise a loop structure, must be zero-initialised */ 2625/* initialise a loop structure, must be zero-initialised */
1592static void noinline 2626static void noinline ecb_cold
1593loop_init (EV_P_ unsigned int flags) 2627loop_init (EV_P_ unsigned int flags) EV_THROW
1594{ 2628{
1595 if (!backend) 2629 if (!backend)
1596 { 2630 {
2631 origflags = flags;
2632
1597#if EV_USE_REALTIME 2633#if EV_USE_REALTIME
1598 if (!have_realtime) 2634 if (!have_realtime)
1599 { 2635 {
1600 struct timespec ts; 2636 struct timespec ts;
1601 2637
… …
1623 if (!(flags & EVFLAG_NOENV) 2659 if (!(flags & EVFLAG_NOENV)
1624 && !enable_secure () 2660 && !enable_secure ()
1625 && getenv ("LIBEV_FLAGS")) 2661 && getenv ("LIBEV_FLAGS"))
1626 flags = atoi (getenv ("LIBEV_FLAGS")); 2662 flags = atoi (getenv ("LIBEV_FLAGS"));
1627 2663
1628 ev_rt_now = ev_time (); 2664 ev_rt_now = ev_time ();
1629 mn_now = get_clock (); 2665 mn_now = get_clock ();
1630 now_floor = mn_now; 2666 now_floor = mn_now;
1631 rtmn_diff = ev_rt_now - mn_now; 2667 rtmn_diff = ev_rt_now - mn_now;
1632#if EV_MINIMAL < 2 2668#if EV_FEATURE_API
1633 invoke_cb = ev_invoke_pending; 2669 invoke_cb = ev_invoke_pending;
1634#endif 2670#endif
1635 2671
1636 io_blocktime = 0.; 2672 io_blocktime = 0.;
1637 timeout_blocktime = 0.; 2673 timeout_blocktime = 0.;
1638 backend = 0; 2674 backend = 0;
1639 backend_fd = -1; 2675 backend_fd = -1;
1640 sig_pending = 0; 2676 sig_pending = 0;
1641#if EV_ASYNC_ENABLE 2677#if EV_ASYNC_ENABLE
1642 async_pending = 0; 2678 async_pending = 0;
1643#endif 2679#endif
2680 pipe_write_skipped = 0;
2681 pipe_write_wanted = 0;
2682 evpipe [0] = -1;
2683 evpipe [1] = -1;
1644#if EV_USE_INOTIFY 2684#if EV_USE_INOTIFY
1645 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2685 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1646#endif 2686#endif
1647#if EV_USE_SIGNALFD 2687#if EV_USE_SIGNALFD
1648 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2688 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1649#endif 2689#endif
1650 2690
1651 if (!(flags & 0x0000ffffU)) 2691 if (!(flags & EVBACKEND_MASK))
1652 flags |= ev_recommended_backends (); 2692 flags |= ev_recommended_backends ();
1653 2693
2694#if EV_USE_IOCP
2695 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2696#endif
1654#if EV_USE_PORT 2697#if EV_USE_PORT
1655 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2698 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1656#endif 2699#endif
1657#if EV_USE_KQUEUE 2700#if EV_USE_KQUEUE
1658 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2701 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1675#endif 2718#endif
1676 } 2719 }
1677} 2720}
1678 2721
1679/* free up a loop structure */ 2722/* free up a loop structure */
1680static void noinline 2723void ecb_cold
1681loop_destroy (EV_P) 2724ev_loop_destroy (EV_P)
1682{ 2725{
1683 int i; 2726 int i;
2727
2728#if EV_MULTIPLICITY
2729 /* mimic free (0) */
2730 if (!EV_A)
2731 return;
2732#endif
2733
2734#if EV_CLEANUP_ENABLE
2735 /* queue cleanup watchers (and execute them) */
2736 if (expect_false (cleanupcnt))
2737 {
2738 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2739 EV_INVOKE_PENDING;
2740 }
2741#endif
2742
2743#if EV_CHILD_ENABLE
2744 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2745 {
2746 ev_ref (EV_A); /* child watcher */
2747 ev_signal_stop (EV_A_ &childev);
2748 }
2749#endif
1684 2750
1685 if (ev_is_active (&pipe_w)) 2751 if (ev_is_active (&pipe_w))
1686 { 2752 {
1687 /*ev_ref (EV_A);*/ 2753 /*ev_ref (EV_A);*/
1688 /*ev_io_stop (EV_A_ &pipe_w);*/ 2754 /*ev_io_stop (EV_A_ &pipe_w);*/
1689 2755
1690#if EV_USE_EVENTFD
1691 if (evfd >= 0)
1692 close (evfd);
1693#endif
1694
1695 if (evpipe [0] >= 0)
1696 {
1697 EV_WIN32_CLOSE_FD (evpipe [0]); 2756 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1698 EV_WIN32_CLOSE_FD (evpipe [1]); 2757 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1699 }
1700 } 2758 }
1701 2759
1702#if EV_USE_SIGNALFD 2760#if EV_USE_SIGNALFD
1703 if (ev_is_active (&sigfd_w)) 2761 if (ev_is_active (&sigfd_w))
1704 close (sigfd); 2762 close (sigfd);
… …
1710#endif 2768#endif
1711 2769
1712 if (backend_fd >= 0) 2770 if (backend_fd >= 0)
1713 close (backend_fd); 2771 close (backend_fd);
1714 2772
2773#if EV_USE_IOCP
2774 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2775#endif
1715#if EV_USE_PORT 2776#if EV_USE_PORT
1716 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2777 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1717#endif 2778#endif
1718#if EV_USE_KQUEUE 2779#if EV_USE_KQUEUE
1719 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2780 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1746 array_free (periodic, EMPTY); 2807 array_free (periodic, EMPTY);
1747#endif 2808#endif
1748#if EV_FORK_ENABLE 2809#if EV_FORK_ENABLE
1749 array_free (fork, EMPTY); 2810 array_free (fork, EMPTY);
1750#endif 2811#endif
2812#if EV_CLEANUP_ENABLE
2813 array_free (cleanup, EMPTY);
2814#endif
1751 array_free (prepare, EMPTY); 2815 array_free (prepare, EMPTY);
1752 array_free (check, EMPTY); 2816 array_free (check, EMPTY);
1753#if EV_ASYNC_ENABLE 2817#if EV_ASYNC_ENABLE
1754 array_free (async, EMPTY); 2818 array_free (async, EMPTY);
1755#endif 2819#endif
1756 2820
1757 backend = 0; 2821 backend = 0;
2822
2823#if EV_MULTIPLICITY
2824 if (ev_is_default_loop (EV_A))
2825#endif
2826 ev_default_loop_ptr = 0;
2827#if EV_MULTIPLICITY
2828 else
2829 ev_free (EV_A);
2830#endif
1758} 2831}
1759 2832
1760#if EV_USE_INOTIFY 2833#if EV_USE_INOTIFY
1761inline_size void infy_fork (EV_P); 2834inline_size void infy_fork (EV_P);
1762#endif 2835#endif
… …
1775#endif 2848#endif
1776#if EV_USE_INOTIFY 2849#if EV_USE_INOTIFY
1777 infy_fork (EV_A); 2850 infy_fork (EV_A);
1778#endif 2851#endif
1779 2852
2853#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1780 if (ev_is_active (&pipe_w)) 2854 if (ev_is_active (&pipe_w))
1781 { 2855 {
1782 /* this "locks" the handlers against writing to the pipe */ 2856 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1783 /* while we modify the fd vars */
1784 sig_pending = 1;
1785#if EV_ASYNC_ENABLE
1786 async_pending = 1;
1787#endif
1788 2857
1789 ev_ref (EV_A); 2858 ev_ref (EV_A);
1790 ev_io_stop (EV_A_ &pipe_w); 2859 ev_io_stop (EV_A_ &pipe_w);
1791 2860
1792#if EV_USE_EVENTFD
1793 if (evfd >= 0)
1794 close (evfd);
1795#endif
1796
1797 if (evpipe [0] >= 0) 2861 if (evpipe [0] >= 0)
1798 {
1799 EV_WIN32_CLOSE_FD (evpipe [0]); 2862 EV_WIN32_CLOSE_FD (evpipe [0]);
1800 EV_WIN32_CLOSE_FD (evpipe [1]);
1801 }
1802 2863
1803#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1804 evpipe_init (EV_A); 2864 evpipe_init (EV_A);
1805 /* now iterate over everything, in case we missed something */ 2865 /* iterate over everything, in case we missed something before */
1806 pipecb (EV_A_ &pipe_w, EV_READ); 2866 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1807#endif
1808 } 2867 }
2868#endif
1809 2869
1810 postfork = 0; 2870 postfork = 0;
1811} 2871}
1812 2872
1813#if EV_MULTIPLICITY 2873#if EV_MULTIPLICITY
1814 2874
1815struct ev_loop * 2875struct ev_loop * ecb_cold
1816ev_loop_new (unsigned int flags) 2876ev_loop_new (unsigned int flags) EV_THROW
1817{ 2877{
1818 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2878 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1819 2879
1820 memset (EV_A, 0, sizeof (struct ev_loop)); 2880 memset (EV_A, 0, sizeof (struct ev_loop));
1821 loop_init (EV_A_ flags); 2881 loop_init (EV_A_ flags);
1822 2882
1823 if (ev_backend (EV_A)) 2883 if (ev_backend (EV_A))
1824 return EV_A; 2884 return EV_A;
1825 2885
2886 ev_free (EV_A);
1826 return 0; 2887 return 0;
1827} 2888}
1828 2889
1829void
1830ev_loop_destroy (EV_P)
1831{
1832 loop_destroy (EV_A);
1833 ev_free (loop);
1834}
1835
1836void
1837ev_loop_fork (EV_P)
1838{
1839 postfork = 1; /* must be in line with ev_default_fork */
1840}
1841#endif /* multiplicity */ 2890#endif /* multiplicity */
1842 2891
1843#if EV_VERIFY 2892#if EV_VERIFY
1844static void noinline 2893static void noinline ecb_cold
1845verify_watcher (EV_P_ W w) 2894verify_watcher (EV_P_ W w)
1846{ 2895{
1847 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2896 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1848 2897
1849 if (w->pending) 2898 if (w->pending)
1850 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2899 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1851} 2900}
1852 2901
1853static void noinline 2902static void noinline ecb_cold
1854verify_heap (EV_P_ ANHE *heap, int N) 2903verify_heap (EV_P_ ANHE *heap, int N)
1855{ 2904{
1856 int i; 2905 int i;
1857 2906
1858 for (i = HEAP0; i < N + HEAP0; ++i) 2907 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1863 2912
1864 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2913 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1865 } 2914 }
1866} 2915}
1867 2916
1868static void noinline 2917static void noinline ecb_cold
1869array_verify (EV_P_ W *ws, int cnt) 2918array_verify (EV_P_ W *ws, int cnt)
1870{ 2919{
1871 while (cnt--) 2920 while (cnt--)
1872 { 2921 {
1873 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2922 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1874 verify_watcher (EV_A_ ws [cnt]); 2923 verify_watcher (EV_A_ ws [cnt]);
1875 } 2924 }
1876} 2925}
1877#endif 2926#endif
1878 2927
1879#if EV_MINIMAL < 2 2928#if EV_FEATURE_API
1880void 2929void ecb_cold
1881ev_loop_verify (EV_P) 2930ev_verify (EV_P) EV_THROW
1882{ 2931{
1883#if EV_VERIFY 2932#if EV_VERIFY
1884 int i; 2933 int i;
1885 WL w; 2934 WL w, w2;
1886 2935
1887 assert (activecnt >= -1); 2936 assert (activecnt >= -1);
1888 2937
1889 assert (fdchangemax >= fdchangecnt); 2938 assert (fdchangemax >= fdchangecnt);
1890 for (i = 0; i < fdchangecnt; ++i) 2939 for (i = 0; i < fdchangecnt; ++i)
1891 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2940 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1892 2941
1893 assert (anfdmax >= 0); 2942 assert (anfdmax >= 0);
1894 for (i = 0; i < anfdmax; ++i) 2943 for (i = 0; i < anfdmax; ++i)
2944 {
2945 int j = 0;
2946
1895 for (w = anfds [i].head; w; w = w->next) 2947 for (w = w2 = anfds [i].head; w; w = w->next)
1896 { 2948 {
1897 verify_watcher (EV_A_ (W)w); 2949 verify_watcher (EV_A_ (W)w);
2950
2951 if (j++ & 1)
2952 {
2953 assert (("libev: io watcher list contains a loop", w != w2));
2954 w2 = w2->next;
2955 }
2956
1898 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2957 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1899 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2958 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1900 } 2959 }
2960 }
1901 2961
1902 assert (timermax >= timercnt); 2962 assert (timermax >= timercnt);
1903 verify_heap (EV_A_ timers, timercnt); 2963 verify_heap (EV_A_ timers, timercnt);
1904 2964
1905#if EV_PERIODIC_ENABLE 2965#if EV_PERIODIC_ENABLE
… …
1920#if EV_FORK_ENABLE 2980#if EV_FORK_ENABLE
1921 assert (forkmax >= forkcnt); 2981 assert (forkmax >= forkcnt);
1922 array_verify (EV_A_ (W *)forks, forkcnt); 2982 array_verify (EV_A_ (W *)forks, forkcnt);
1923#endif 2983#endif
1924 2984
2985#if EV_CLEANUP_ENABLE
2986 assert (cleanupmax >= cleanupcnt);
2987 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2988#endif
2989
1925#if EV_ASYNC_ENABLE 2990#if EV_ASYNC_ENABLE
1926 assert (asyncmax >= asynccnt); 2991 assert (asyncmax >= asynccnt);
1927 array_verify (EV_A_ (W *)asyncs, asynccnt); 2992 array_verify (EV_A_ (W *)asyncs, asynccnt);
1928#endif 2993#endif
1929 2994
… …
1937 array_verify (EV_A_ (W *)checks, checkcnt); 3002 array_verify (EV_A_ (W *)checks, checkcnt);
1938#endif 3003#endif
1939 3004
1940# if 0 3005# if 0
1941#if EV_CHILD_ENABLE 3006#if EV_CHILD_ENABLE
1942 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3007 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1943 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3008 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1944#endif 3009#endif
1945# endif 3010# endif
1946#endif 3011#endif
1947} 3012}
1948#endif 3013#endif
1949 3014
1950#if EV_MULTIPLICITY 3015#if EV_MULTIPLICITY
1951struct ev_loop * 3016struct ev_loop * ecb_cold
1952ev_default_loop_init (unsigned int flags)
1953#else 3017#else
1954int 3018int
3019#endif
1955ev_default_loop (unsigned int flags) 3020ev_default_loop (unsigned int flags) EV_THROW
1956#endif
1957{ 3021{
1958 if (!ev_default_loop_ptr) 3022 if (!ev_default_loop_ptr)
1959 { 3023 {
1960#if EV_MULTIPLICITY 3024#if EV_MULTIPLICITY
1961 EV_P = ev_default_loop_ptr = &default_loop_struct; 3025 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1980 3044
1981 return ev_default_loop_ptr; 3045 return ev_default_loop_ptr;
1982} 3046}
1983 3047
1984void 3048void
1985ev_default_destroy (void) 3049ev_loop_fork (EV_P) EV_THROW
1986{ 3050{
1987#if EV_MULTIPLICITY 3051 postfork = 1;
1988 EV_P = ev_default_loop_ptr;
1989#endif
1990
1991 ev_default_loop_ptr = 0;
1992
1993#if EV_CHILD_ENABLE
1994 ev_ref (EV_A); /* child watcher */
1995 ev_signal_stop (EV_A_ &childev);
1996#endif
1997
1998 loop_destroy (EV_A);
1999}
2000
2001void
2002ev_default_fork (void)
2003{
2004#if EV_MULTIPLICITY
2005 EV_P = ev_default_loop_ptr;
2006#endif
2007
2008 postfork = 1; /* must be in line with ev_loop_fork */
2009} 3052}
2010 3053
2011/*****************************************************************************/ 3054/*****************************************************************************/
2012 3055
2013void 3056void
… …
2015{ 3058{
2016 EV_CB_INVOKE ((W)w, revents); 3059 EV_CB_INVOKE ((W)w, revents);
2017} 3060}
2018 3061
2019unsigned int 3062unsigned int
2020ev_pending_count (EV_P) 3063ev_pending_count (EV_P) EV_THROW
2021{ 3064{
2022 int pri; 3065 int pri;
2023 unsigned int count = 0; 3066 unsigned int count = 0;
2024 3067
2025 for (pri = NUMPRI; pri--; ) 3068 for (pri = NUMPRI; pri--; )
… …
2029} 3072}
2030 3073
2031void noinline 3074void noinline
2032ev_invoke_pending (EV_P) 3075ev_invoke_pending (EV_P)
2033{ 3076{
2034 int pri; 3077 pendingpri = NUMPRI;
2035 3078
2036 for (pri = NUMPRI; pri--; ) 3079 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3080 {
3081 --pendingpri;
3082
2037 while (pendingcnt [pri]) 3083 while (pendingcnt [pendingpri])
2038 { 3084 {
2039 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3085 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2040 3086
2041 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2042 /* ^ this is no longer true, as pending_w could be here */
2043
2044 p->w->pending = 0; 3087 p->w->pending = 0;
2045 EV_CB_INVOKE (p->w, p->events); 3088 EV_CB_INVOKE (p->w, p->events);
2046 EV_FREQUENT_CHECK; 3089 EV_FREQUENT_CHECK;
2047 } 3090 }
3091 }
2048} 3092}
2049 3093
2050#if EV_IDLE_ENABLE 3094#if EV_IDLE_ENABLE
2051/* make idle watchers pending. this handles the "call-idle */ 3095/* make idle watchers pending. this handles the "call-idle */
2052/* only when higher priorities are idle" logic */ 3096/* only when higher priorities are idle" logic */
… …
2104 EV_FREQUENT_CHECK; 3148 EV_FREQUENT_CHECK;
2105 feed_reverse (EV_A_ (W)w); 3149 feed_reverse (EV_A_ (W)w);
2106 } 3150 }
2107 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3151 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2108 3152
2109 feed_reverse_done (EV_A_ EV_TIMEOUT); 3153 feed_reverse_done (EV_A_ EV_TIMER);
2110 } 3154 }
2111} 3155}
2112 3156
2113#if EV_PERIODIC_ENABLE 3157#if EV_PERIODIC_ENABLE
3158
3159static void noinline
3160periodic_recalc (EV_P_ ev_periodic *w)
3161{
3162 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3163 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3164
3165 /* the above almost always errs on the low side */
3166 while (at <= ev_rt_now)
3167 {
3168 ev_tstamp nat = at + w->interval;
3169
3170 /* when resolution fails us, we use ev_rt_now */
3171 if (expect_false (nat == at))
3172 {
3173 at = ev_rt_now;
3174 break;
3175 }
3176
3177 at = nat;
3178 }
3179
3180 ev_at (w) = at;
3181}
3182
2114/* make periodics pending */ 3183/* make periodics pending */
2115inline_size void 3184inline_size void
2116periodics_reify (EV_P) 3185periodics_reify (EV_P)
2117{ 3186{
2118 EV_FREQUENT_CHECK; 3187 EV_FREQUENT_CHECK;
2119 3188
2120 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3189 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2121 { 3190 {
2122 int feed_count = 0;
2123
2124 do 3191 do
2125 { 3192 {
2126 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3193 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2127 3194
2128 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3195 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2137 ANHE_at_cache (periodics [HEAP0]); 3204 ANHE_at_cache (periodics [HEAP0]);
2138 downheap (periodics, periodiccnt, HEAP0); 3205 downheap (periodics, periodiccnt, HEAP0);
2139 } 3206 }
2140 else if (w->interval) 3207 else if (w->interval)
2141 { 3208 {
2142 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3209 periodic_recalc (EV_A_ w);
2143 /* if next trigger time is not sufficiently in the future, put it there */
2144 /* this might happen because of floating point inexactness */
2145 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2146 {
2147 ev_at (w) += w->interval;
2148
2149 /* if interval is unreasonably low we might still have a time in the past */
2150 /* so correct this. this will make the periodic very inexact, but the user */
2151 /* has effectively asked to get triggered more often than possible */
2152 if (ev_at (w) < ev_rt_now)
2153 ev_at (w) = ev_rt_now;
2154 }
2155
2156 ANHE_at_cache (periodics [HEAP0]); 3210 ANHE_at_cache (periodics [HEAP0]);
2157 downheap (periodics, periodiccnt, HEAP0); 3211 downheap (periodics, periodiccnt, HEAP0);
2158 } 3212 }
2159 else 3213 else
2160 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3214 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2167 feed_reverse_done (EV_A_ EV_PERIODIC); 3221 feed_reverse_done (EV_A_ EV_PERIODIC);
2168 } 3222 }
2169} 3223}
2170 3224
2171/* simply recalculate all periodics */ 3225/* simply recalculate all periodics */
2172/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3226/* TODO: maybe ensure that at least one event happens when jumping forward? */
2173static void noinline 3227static void noinline ecb_cold
2174periodics_reschedule (EV_P) 3228periodics_reschedule (EV_P)
2175{ 3229{
2176 int i; 3230 int i;
2177 3231
2178 /* adjust periodics after time jump */ 3232 /* adjust periodics after time jump */
… …
2181 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3235 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2182 3236
2183 if (w->reschedule_cb) 3237 if (w->reschedule_cb)
2184 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3238 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2185 else if (w->interval) 3239 else if (w->interval)
2186 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3240 periodic_recalc (EV_A_ w);
2187 3241
2188 ANHE_at_cache (periodics [i]); 3242 ANHE_at_cache (periodics [i]);
2189 } 3243 }
2190 3244
2191 reheap (periodics, periodiccnt); 3245 reheap (periodics, periodiccnt);
2192} 3246}
2193#endif 3247#endif
2194 3248
2195/* adjust all timers by a given offset */ 3249/* adjust all timers by a given offset */
2196static void noinline 3250static void noinline ecb_cold
2197timers_reschedule (EV_P_ ev_tstamp adjust) 3251timers_reschedule (EV_P_ ev_tstamp adjust)
2198{ 3252{
2199 int i; 3253 int i;
2200 3254
2201 for (i = 0; i < timercnt; ++i) 3255 for (i = 0; i < timercnt; ++i)
… …
2238 * doesn't hurt either as we only do this on time-jumps or 3292 * doesn't hurt either as we only do this on time-jumps or
2239 * in the unlikely event of having been preempted here. 3293 * in the unlikely event of having been preempted here.
2240 */ 3294 */
2241 for (i = 4; --i; ) 3295 for (i = 4; --i; )
2242 { 3296 {
3297 ev_tstamp diff;
2243 rtmn_diff = ev_rt_now - mn_now; 3298 rtmn_diff = ev_rt_now - mn_now;
2244 3299
3300 diff = odiff - rtmn_diff;
3301
2245 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3302 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2246 return; /* all is well */ 3303 return; /* all is well */
2247 3304
2248 ev_rt_now = ev_time (); 3305 ev_rt_now = ev_time ();
2249 mn_now = get_clock (); 3306 mn_now = get_clock ();
2250 now_floor = mn_now; 3307 now_floor = mn_now;
… …
2272 3329
2273 mn_now = ev_rt_now; 3330 mn_now = ev_rt_now;
2274 } 3331 }
2275} 3332}
2276 3333
2277void 3334int
2278ev_loop (EV_P_ int flags) 3335ev_run (EV_P_ int flags)
2279{ 3336{
2280#if EV_MINIMAL < 2 3337#if EV_FEATURE_API
2281 ++loop_depth; 3338 ++loop_depth;
2282#endif 3339#endif
2283 3340
2284 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3341 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2285 3342
2286 loop_done = EVUNLOOP_CANCEL; 3343 loop_done = EVBREAK_CANCEL;
2287 3344
2288 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3345 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2289 3346
2290 do 3347 do
2291 { 3348 {
2292#if EV_VERIFY >= 2 3349#if EV_VERIFY >= 2
2293 ev_loop_verify (EV_A); 3350 ev_verify (EV_A);
2294#endif 3351#endif
2295 3352
2296#ifndef _WIN32 3353#ifndef _WIN32
2297 if (expect_false (curpid)) /* penalise the forking check even more */ 3354 if (expect_false (curpid)) /* penalise the forking check even more */
2298 if (expect_false (getpid () != curpid)) 3355 if (expect_false (getpid () != curpid))
… …
2334 /* calculate blocking time */ 3391 /* calculate blocking time */
2335 { 3392 {
2336 ev_tstamp waittime = 0.; 3393 ev_tstamp waittime = 0.;
2337 ev_tstamp sleeptime = 0.; 3394 ev_tstamp sleeptime = 0.;
2338 3395
3396 /* remember old timestamp for io_blocktime calculation */
3397 ev_tstamp prev_mn_now = mn_now;
3398
3399 /* update time to cancel out callback processing overhead */
3400 time_update (EV_A_ 1e100);
3401
3402 /* from now on, we want a pipe-wake-up */
3403 pipe_write_wanted = 1;
3404
3405 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3406
2339 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3407 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2340 { 3408 {
2341 /* remember old timestamp for io_blocktime calculation */
2342 ev_tstamp prev_mn_now = mn_now;
2343
2344 /* update time to cancel out callback processing overhead */
2345 time_update (EV_A_ 1e100);
2346
2347 waittime = MAX_BLOCKTIME; 3409 waittime = MAX_BLOCKTIME;
2348 3410
2349 if (timercnt) 3411 if (timercnt)
2350 { 3412 {
2351 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3413 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2352 if (waittime > to) waittime = to; 3414 if (waittime > to) waittime = to;
2353 } 3415 }
2354 3416
2355#if EV_PERIODIC_ENABLE 3417#if EV_PERIODIC_ENABLE
2356 if (periodiccnt) 3418 if (periodiccnt)
2357 { 3419 {
2358 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3420 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2359 if (waittime > to) waittime = to; 3421 if (waittime > to) waittime = to;
2360 } 3422 }
2361#endif 3423#endif
2362 3424
2363 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3425 /* don't let timeouts decrease the waittime below timeout_blocktime */
2364 if (expect_false (waittime < timeout_blocktime)) 3426 if (expect_false (waittime < timeout_blocktime))
2365 waittime = timeout_blocktime; 3427 waittime = timeout_blocktime;
3428
3429 /* at this point, we NEED to wait, so we have to ensure */
3430 /* to pass a minimum nonzero value to the backend */
3431 if (expect_false (waittime < backend_mintime))
3432 waittime = backend_mintime;
2366 3433
2367 /* extra check because io_blocktime is commonly 0 */ 3434 /* extra check because io_blocktime is commonly 0 */
2368 if (expect_false (io_blocktime)) 3435 if (expect_false (io_blocktime))
2369 { 3436 {
2370 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3437 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2371 3438
2372 if (sleeptime > waittime - backend_fudge) 3439 if (sleeptime > waittime - backend_mintime)
2373 sleeptime = waittime - backend_fudge; 3440 sleeptime = waittime - backend_mintime;
2374 3441
2375 if (expect_true (sleeptime > 0.)) 3442 if (expect_true (sleeptime > 0.))
2376 { 3443 {
2377 ev_sleep (sleeptime); 3444 ev_sleep (sleeptime);
2378 waittime -= sleeptime; 3445 waittime -= sleeptime;
2379 } 3446 }
2380 } 3447 }
2381 } 3448 }
2382 3449
2383#if EV_MINIMAL < 2 3450#if EV_FEATURE_API
2384 ++loop_count; 3451 ++loop_count;
2385#endif 3452#endif
2386 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3453 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2387 backend_poll (EV_A_ waittime); 3454 backend_poll (EV_A_ waittime);
2388 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3455 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3456
3457 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3458
3459 ECB_MEMORY_FENCE_ACQUIRE;
3460 if (pipe_write_skipped)
3461 {
3462 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3463 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3464 }
3465
2389 3466
2390 /* update ev_rt_now, do magic */ 3467 /* update ev_rt_now, do magic */
2391 time_update (EV_A_ waittime + sleeptime); 3468 time_update (EV_A_ waittime + sleeptime);
2392 } 3469 }
2393 3470
… …
2411 EV_INVOKE_PENDING; 3488 EV_INVOKE_PENDING;
2412 } 3489 }
2413 while (expect_true ( 3490 while (expect_true (
2414 activecnt 3491 activecnt
2415 && !loop_done 3492 && !loop_done
2416 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3493 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2417 )); 3494 ));
2418 3495
2419 if (loop_done == EVUNLOOP_ONE) 3496 if (loop_done == EVBREAK_ONE)
2420 loop_done = EVUNLOOP_CANCEL; 3497 loop_done = EVBREAK_CANCEL;
2421 3498
2422#if EV_MINIMAL < 2 3499#if EV_FEATURE_API
2423 --loop_depth; 3500 --loop_depth;
2424#endif 3501#endif
3502
3503 return activecnt;
2425} 3504}
2426 3505
2427void 3506void
2428ev_unloop (EV_P_ int how) 3507ev_break (EV_P_ int how) EV_THROW
2429{ 3508{
2430 loop_done = how; 3509 loop_done = how;
2431} 3510}
2432 3511
2433void 3512void
2434ev_ref (EV_P) 3513ev_ref (EV_P) EV_THROW
2435{ 3514{
2436 ++activecnt; 3515 ++activecnt;
2437} 3516}
2438 3517
2439void 3518void
2440ev_unref (EV_P) 3519ev_unref (EV_P) EV_THROW
2441{ 3520{
2442 --activecnt; 3521 --activecnt;
2443} 3522}
2444 3523
2445void 3524void
2446ev_now_update (EV_P) 3525ev_now_update (EV_P) EV_THROW
2447{ 3526{
2448 time_update (EV_A_ 1e100); 3527 time_update (EV_A_ 1e100);
2449} 3528}
2450 3529
2451void 3530void
2452ev_suspend (EV_P) 3531ev_suspend (EV_P) EV_THROW
2453{ 3532{
2454 ev_now_update (EV_A); 3533 ev_now_update (EV_A);
2455} 3534}
2456 3535
2457void 3536void
2458ev_resume (EV_P) 3537ev_resume (EV_P) EV_THROW
2459{ 3538{
2460 ev_tstamp mn_prev = mn_now; 3539 ev_tstamp mn_prev = mn_now;
2461 3540
2462 ev_now_update (EV_A); 3541 ev_now_update (EV_A);
2463 timers_reschedule (EV_A_ mn_now - mn_prev); 3542 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2502 w->pending = 0; 3581 w->pending = 0;
2503 } 3582 }
2504} 3583}
2505 3584
2506int 3585int
2507ev_clear_pending (EV_P_ void *w) 3586ev_clear_pending (EV_P_ void *w) EV_THROW
2508{ 3587{
2509 W w_ = (W)w; 3588 W w_ = (W)w;
2510 int pending = w_->pending; 3589 int pending = w_->pending;
2511 3590
2512 if (expect_true (pending)) 3591 if (expect_true (pending))
… …
2545} 3624}
2546 3625
2547/*****************************************************************************/ 3626/*****************************************************************************/
2548 3627
2549void noinline 3628void noinline
2550ev_io_start (EV_P_ ev_io *w) 3629ev_io_start (EV_P_ ev_io *w) EV_THROW
2551{ 3630{
2552 int fd = w->fd; 3631 int fd = w->fd;
2553 3632
2554 if (expect_false (ev_is_active (w))) 3633 if (expect_false (ev_is_active (w)))
2555 return; 3634 return;
… …
2561 3640
2562 ev_start (EV_A_ (W)w, 1); 3641 ev_start (EV_A_ (W)w, 1);
2563 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3642 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2564 wlist_add (&anfds[fd].head, (WL)w); 3643 wlist_add (&anfds[fd].head, (WL)w);
2565 3644
3645 /* common bug, apparently */
3646 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3647
2566 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3648 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2567 w->events &= ~EV__IOFDSET; 3649 w->events &= ~EV__IOFDSET;
2568 3650
2569 EV_FREQUENT_CHECK; 3651 EV_FREQUENT_CHECK;
2570} 3652}
2571 3653
2572void noinline 3654void noinline
2573ev_io_stop (EV_P_ ev_io *w) 3655ev_io_stop (EV_P_ ev_io *w) EV_THROW
2574{ 3656{
2575 clear_pending (EV_A_ (W)w); 3657 clear_pending (EV_A_ (W)w);
2576 if (expect_false (!ev_is_active (w))) 3658 if (expect_false (!ev_is_active (w)))
2577 return; 3659 return;
2578 3660
… …
2581 EV_FREQUENT_CHECK; 3663 EV_FREQUENT_CHECK;
2582 3664
2583 wlist_del (&anfds[w->fd].head, (WL)w); 3665 wlist_del (&anfds[w->fd].head, (WL)w);
2584 ev_stop (EV_A_ (W)w); 3666 ev_stop (EV_A_ (W)w);
2585 3667
2586 fd_change (EV_A_ w->fd, 1); 3668 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2587 3669
2588 EV_FREQUENT_CHECK; 3670 EV_FREQUENT_CHECK;
2589} 3671}
2590 3672
2591void noinline 3673void noinline
2592ev_timer_start (EV_P_ ev_timer *w) 3674ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2593{ 3675{
2594 if (expect_false (ev_is_active (w))) 3676 if (expect_false (ev_is_active (w)))
2595 return; 3677 return;
2596 3678
2597 ev_at (w) += mn_now; 3679 ev_at (w) += mn_now;
… …
2611 3693
2612 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3694 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2613} 3695}
2614 3696
2615void noinline 3697void noinline
2616ev_timer_stop (EV_P_ ev_timer *w) 3698ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2617{ 3699{
2618 clear_pending (EV_A_ (W)w); 3700 clear_pending (EV_A_ (W)w);
2619 if (expect_false (!ev_is_active (w))) 3701 if (expect_false (!ev_is_active (w)))
2620 return; 3702 return;
2621 3703
… …
2641 3723
2642 EV_FREQUENT_CHECK; 3724 EV_FREQUENT_CHECK;
2643} 3725}
2644 3726
2645void noinline 3727void noinline
2646ev_timer_again (EV_P_ ev_timer *w) 3728ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2647{ 3729{
2648 EV_FREQUENT_CHECK; 3730 EV_FREQUENT_CHECK;
3731
3732 clear_pending (EV_A_ (W)w);
2649 3733
2650 if (ev_is_active (w)) 3734 if (ev_is_active (w))
2651 { 3735 {
2652 if (w->repeat) 3736 if (w->repeat)
2653 { 3737 {
… …
2666 3750
2667 EV_FREQUENT_CHECK; 3751 EV_FREQUENT_CHECK;
2668} 3752}
2669 3753
2670ev_tstamp 3754ev_tstamp
2671ev_timer_remaining (EV_P_ ev_timer *w) 3755ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2672{ 3756{
2673 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3757 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2674} 3758}
2675 3759
2676#if EV_PERIODIC_ENABLE 3760#if EV_PERIODIC_ENABLE
2677void noinline 3761void noinline
2678ev_periodic_start (EV_P_ ev_periodic *w) 3762ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2679{ 3763{
2680 if (expect_false (ev_is_active (w))) 3764 if (expect_false (ev_is_active (w)))
2681 return; 3765 return;
2682 3766
2683 if (w->reschedule_cb) 3767 if (w->reschedule_cb)
2684 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3768 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2685 else if (w->interval) 3769 else if (w->interval)
2686 { 3770 {
2687 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3771 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2688 /* this formula differs from the one in periodic_reify because we do not always round up */ 3772 periodic_recalc (EV_A_ w);
2689 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2690 } 3773 }
2691 else 3774 else
2692 ev_at (w) = w->offset; 3775 ev_at (w) = w->offset;
2693 3776
2694 EV_FREQUENT_CHECK; 3777 EV_FREQUENT_CHECK;
… …
2704 3787
2705 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3788 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2706} 3789}
2707 3790
2708void noinline 3791void noinline
2709ev_periodic_stop (EV_P_ ev_periodic *w) 3792ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2710{ 3793{
2711 clear_pending (EV_A_ (W)w); 3794 clear_pending (EV_A_ (W)w);
2712 if (expect_false (!ev_is_active (w))) 3795 if (expect_false (!ev_is_active (w)))
2713 return; 3796 return;
2714 3797
… …
2732 3815
2733 EV_FREQUENT_CHECK; 3816 EV_FREQUENT_CHECK;
2734} 3817}
2735 3818
2736void noinline 3819void noinline
2737ev_periodic_again (EV_P_ ev_periodic *w) 3820ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2738{ 3821{
2739 /* TODO: use adjustheap and recalculation */ 3822 /* TODO: use adjustheap and recalculation */
2740 ev_periodic_stop (EV_A_ w); 3823 ev_periodic_stop (EV_A_ w);
2741 ev_periodic_start (EV_A_ w); 3824 ev_periodic_start (EV_A_ w);
2742} 3825}
… …
2747#endif 3830#endif
2748 3831
2749#if EV_SIGNAL_ENABLE 3832#if EV_SIGNAL_ENABLE
2750 3833
2751void noinline 3834void noinline
2752ev_signal_start (EV_P_ ev_signal *w) 3835ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2753{ 3836{
2754 if (expect_false (ev_is_active (w))) 3837 if (expect_false (ev_is_active (w)))
2755 return; 3838 return;
2756 3839
2757 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3840 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2759#if EV_MULTIPLICITY 3842#if EV_MULTIPLICITY
2760 assert (("libev: a signal must not be attached to two different loops", 3843 assert (("libev: a signal must not be attached to two different loops",
2761 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3844 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2762 3845
2763 signals [w->signum - 1].loop = EV_A; 3846 signals [w->signum - 1].loop = EV_A;
3847 ECB_MEMORY_FENCE_RELEASE;
2764#endif 3848#endif
2765 3849
2766 EV_FREQUENT_CHECK; 3850 EV_FREQUENT_CHECK;
2767 3851
2768#if EV_USE_SIGNALFD 3852#if EV_USE_SIGNALFD
… …
2815 sa.sa_handler = ev_sighandler; 3899 sa.sa_handler = ev_sighandler;
2816 sigfillset (&sa.sa_mask); 3900 sigfillset (&sa.sa_mask);
2817 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3901 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2818 sigaction (w->signum, &sa, 0); 3902 sigaction (w->signum, &sa, 0);
2819 3903
3904 if (origflags & EVFLAG_NOSIGMASK)
3905 {
2820 sigemptyset (&sa.sa_mask); 3906 sigemptyset (&sa.sa_mask);
2821 sigaddset (&sa.sa_mask, w->signum); 3907 sigaddset (&sa.sa_mask, w->signum);
2822 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3908 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3909 }
2823#endif 3910#endif
2824 } 3911 }
2825 3912
2826 EV_FREQUENT_CHECK; 3913 EV_FREQUENT_CHECK;
2827} 3914}
2828 3915
2829void noinline 3916void noinline
2830ev_signal_stop (EV_P_ ev_signal *w) 3917ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2831{ 3918{
2832 clear_pending (EV_A_ (W)w); 3919 clear_pending (EV_A_ (W)w);
2833 if (expect_false (!ev_is_active (w))) 3920 if (expect_false (!ev_is_active (w)))
2834 return; 3921 return;
2835 3922
… …
2866#endif 3953#endif
2867 3954
2868#if EV_CHILD_ENABLE 3955#if EV_CHILD_ENABLE
2869 3956
2870void 3957void
2871ev_child_start (EV_P_ ev_child *w) 3958ev_child_start (EV_P_ ev_child *w) EV_THROW
2872{ 3959{
2873#if EV_MULTIPLICITY 3960#if EV_MULTIPLICITY
2874 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3961 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2875#endif 3962#endif
2876 if (expect_false (ev_is_active (w))) 3963 if (expect_false (ev_is_active (w)))
2877 return; 3964 return;
2878 3965
2879 EV_FREQUENT_CHECK; 3966 EV_FREQUENT_CHECK;
2880 3967
2881 ev_start (EV_A_ (W)w, 1); 3968 ev_start (EV_A_ (W)w, 1);
2882 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3969 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2883 3970
2884 EV_FREQUENT_CHECK; 3971 EV_FREQUENT_CHECK;
2885} 3972}
2886 3973
2887void 3974void
2888ev_child_stop (EV_P_ ev_child *w) 3975ev_child_stop (EV_P_ ev_child *w) EV_THROW
2889{ 3976{
2890 clear_pending (EV_A_ (W)w); 3977 clear_pending (EV_A_ (W)w);
2891 if (expect_false (!ev_is_active (w))) 3978 if (expect_false (!ev_is_active (w)))
2892 return; 3979 return;
2893 3980
2894 EV_FREQUENT_CHECK; 3981 EV_FREQUENT_CHECK;
2895 3982
2896 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3983 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2897 ev_stop (EV_A_ (W)w); 3984 ev_stop (EV_A_ (W)w);
2898 3985
2899 EV_FREQUENT_CHECK; 3986 EV_FREQUENT_CHECK;
2900} 3987}
2901 3988
… …
2920# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4007# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2921 4008
2922static void noinline 4009static void noinline
2923infy_add (EV_P_ ev_stat *w) 4010infy_add (EV_P_ ev_stat *w)
2924{ 4011{
2925 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); 4012 w->wd = inotify_add_watch (fs_fd, w->path,
4013 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4014 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4015 | IN_DONT_FOLLOW | IN_MASK_ADD);
2926 4016
2927 if (w->wd >= 0) 4017 if (w->wd >= 0)
2928 { 4018 {
2929 struct statfs sfs; 4019 struct statfs sfs;
2930 4020
… …
2934 4024
2935 if (!fs_2625) 4025 if (!fs_2625)
2936 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4026 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2937 else if (!statfs (w->path, &sfs) 4027 else if (!statfs (w->path, &sfs)
2938 && (sfs.f_type == 0x1373 /* devfs */ 4028 && (sfs.f_type == 0x1373 /* devfs */
4029 || sfs.f_type == 0x4006 /* fat */
4030 || sfs.f_type == 0x4d44 /* msdos */
2939 || sfs.f_type == 0xEF53 /* ext2/3 */ 4031 || sfs.f_type == 0xEF53 /* ext2/3 */
4032 || sfs.f_type == 0x72b6 /* jffs2 */
4033 || sfs.f_type == 0x858458f6 /* ramfs */
4034 || sfs.f_type == 0x5346544e /* ntfs */
2940 || sfs.f_type == 0x3153464a /* jfs */ 4035 || sfs.f_type == 0x3153464a /* jfs */
4036 || sfs.f_type == 0x9123683e /* btrfs */
2941 || sfs.f_type == 0x52654973 /* reiser3 */ 4037 || sfs.f_type == 0x52654973 /* reiser3 */
2942 || sfs.f_type == 0x01021994 /* tempfs */ 4038 || sfs.f_type == 0x01021994 /* tmpfs */
2943 || sfs.f_type == 0x58465342 /* xfs */)) 4039 || sfs.f_type == 0x58465342 /* xfs */))
2944 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4040 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2945 else 4041 else
2946 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4042 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2947 } 4043 }
… …
2968 if (!pend || pend == path) 4064 if (!pend || pend == path)
2969 break; 4065 break;
2970 4066
2971 *pend = 0; 4067 *pend = 0;
2972 w->wd = inotify_add_watch (fs_fd, path, mask); 4068 w->wd = inotify_add_watch (fs_fd, path, mask);
2973 } 4069 }
2974 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4070 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2975 } 4071 }
2976 } 4072 }
2977 4073
2978 if (w->wd >= 0) 4074 if (w->wd >= 0)
2979 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4075 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2980 4076
2981 /* now re-arm timer, if required */ 4077 /* now re-arm timer, if required */
2982 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4078 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2983 ev_timer_again (EV_A_ &w->timer); 4079 ev_timer_again (EV_A_ &w->timer);
2984 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4080 if (ev_is_active (&w->timer)) ev_unref (EV_A);
… …
2992 4088
2993 if (wd < 0) 4089 if (wd < 0)
2994 return; 4090 return;
2995 4091
2996 w->wd = -2; 4092 w->wd = -2;
2997 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4093 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2998 wlist_del (&fs_hash [slot].head, (WL)w); 4094 wlist_del (&fs_hash [slot].head, (WL)w);
2999 4095
3000 /* remove this watcher, if others are watching it, they will rearm */ 4096 /* remove this watcher, if others are watching it, they will rearm */
3001 inotify_rm_watch (fs_fd, wd); 4097 inotify_rm_watch (fs_fd, wd);
3002} 4098}
… …
3004static void noinline 4100static void noinline
3005infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4101infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3006{ 4102{
3007 if (slot < 0) 4103 if (slot < 0)
3008 /* overflow, need to check for all hash slots */ 4104 /* overflow, need to check for all hash slots */
3009 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4105 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3010 infy_wd (EV_A_ slot, wd, ev); 4106 infy_wd (EV_A_ slot, wd, ev);
3011 else 4107 else
3012 { 4108 {
3013 WL w_; 4109 WL w_;
3014 4110
3015 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4111 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
3016 { 4112 {
3017 ev_stat *w = (ev_stat *)w_; 4113 ev_stat *w = (ev_stat *)w_;
3018 w_ = w_->next; /* lets us remove this watcher and all before it */ 4114 w_ = w_->next; /* lets us remove this watcher and all before it */
3019 4115
3020 if (w->wd == wd || wd == -1) 4116 if (w->wd == wd || wd == -1)
3021 { 4117 {
3022 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4118 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
3023 { 4119 {
3024 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4120 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3025 w->wd = -1; 4121 w->wd = -1;
3026 infy_add (EV_A_ w); /* re-add, no matter what */ 4122 infy_add (EV_A_ w); /* re-add, no matter what */
3027 } 4123 }
3028 4124
3029 stat_timer_cb (EV_A_ &w->timer, 0); 4125 stat_timer_cb (EV_A_ &w->timer, 0);
… …
3045 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4141 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3046 ofs += sizeof (struct inotify_event) + ev->len; 4142 ofs += sizeof (struct inotify_event) + ev->len;
3047 } 4143 }
3048} 4144}
3049 4145
3050inline_size unsigned int
3051ev_linux_version (void)
3052{
3053 struct utsname buf;
3054 unsigned int v;
3055 int i;
3056 char *p = buf.release;
3057
3058 if (uname (&buf))
3059 return 0;
3060
3061 for (i = 3+1; --i; )
3062 {
3063 unsigned int c = 0;
3064
3065 for (;;)
3066 {
3067 if (*p >= '0' && *p <= '9')
3068 c = c * 10 + *p++ - '0';
3069 else
3070 {
3071 p += *p == '.';
3072 break;
3073 }
3074 }
3075
3076 v = (v << 8) | c;
3077 }
3078
3079 return v;
3080}
3081
3082inline_size void 4146inline_size void ecb_cold
3083ev_check_2625 (EV_P) 4147ev_check_2625 (EV_P)
3084{ 4148{
3085 /* kernels < 2.6.25 are borked 4149 /* kernels < 2.6.25 are borked
3086 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4150 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3087 */ 4151 */
… …
3092} 4156}
3093 4157
3094inline_size int 4158inline_size int
3095infy_newfd (void) 4159infy_newfd (void)
3096{ 4160{
3097#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4161#if defined IN_CLOEXEC && defined IN_NONBLOCK
3098 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4162 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3099 if (fd >= 0) 4163 if (fd >= 0)
3100 return fd; 4164 return fd;
3101#endif 4165#endif
3102 return inotify_init (); 4166 return inotify_init ();
… …
3143 ev_io_set (&fs_w, fs_fd, EV_READ); 4207 ev_io_set (&fs_w, fs_fd, EV_READ);
3144 ev_io_start (EV_A_ &fs_w); 4208 ev_io_start (EV_A_ &fs_w);
3145 ev_unref (EV_A); 4209 ev_unref (EV_A);
3146 } 4210 }
3147 4211
3148 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4212 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3149 { 4213 {
3150 WL w_ = fs_hash [slot].head; 4214 WL w_ = fs_hash [slot].head;
3151 fs_hash [slot].head = 0; 4215 fs_hash [slot].head = 0;
3152 4216
3153 while (w_) 4217 while (w_)
… …
3177#else 4241#else
3178# define EV_LSTAT(p,b) lstat (p, b) 4242# define EV_LSTAT(p,b) lstat (p, b)
3179#endif 4243#endif
3180 4244
3181void 4245void
3182ev_stat_stat (EV_P_ ev_stat *w) 4246ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3183{ 4247{
3184 if (lstat (w->path, &w->attr) < 0) 4248 if (lstat (w->path, &w->attr) < 0)
3185 w->attr.st_nlink = 0; 4249 w->attr.st_nlink = 0;
3186 else if (!w->attr.st_nlink) 4250 else if (!w->attr.st_nlink)
3187 w->attr.st_nlink = 1; 4251 w->attr.st_nlink = 1;
… …
3226 ev_feed_event (EV_A_ w, EV_STAT); 4290 ev_feed_event (EV_A_ w, EV_STAT);
3227 } 4291 }
3228} 4292}
3229 4293
3230void 4294void
3231ev_stat_start (EV_P_ ev_stat *w) 4295ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3232{ 4296{
3233 if (expect_false (ev_is_active (w))) 4297 if (expect_false (ev_is_active (w)))
3234 return; 4298 return;
3235 4299
3236 ev_stat_stat (EV_A_ w); 4300 ev_stat_stat (EV_A_ w);
… …
3257 4321
3258 EV_FREQUENT_CHECK; 4322 EV_FREQUENT_CHECK;
3259} 4323}
3260 4324
3261void 4325void
3262ev_stat_stop (EV_P_ ev_stat *w) 4326ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3263{ 4327{
3264 clear_pending (EV_A_ (W)w); 4328 clear_pending (EV_A_ (W)w);
3265 if (expect_false (!ev_is_active (w))) 4329 if (expect_false (!ev_is_active (w)))
3266 return; 4330 return;
3267 4331
… …
3283} 4347}
3284#endif 4348#endif
3285 4349
3286#if EV_IDLE_ENABLE 4350#if EV_IDLE_ENABLE
3287void 4351void
3288ev_idle_start (EV_P_ ev_idle *w) 4352ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3289{ 4353{
3290 if (expect_false (ev_is_active (w))) 4354 if (expect_false (ev_is_active (w)))
3291 return; 4355 return;
3292 4356
3293 pri_adjust (EV_A_ (W)w); 4357 pri_adjust (EV_A_ (W)w);
… …
3306 4370
3307 EV_FREQUENT_CHECK; 4371 EV_FREQUENT_CHECK;
3308} 4372}
3309 4373
3310void 4374void
3311ev_idle_stop (EV_P_ ev_idle *w) 4375ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3312{ 4376{
3313 clear_pending (EV_A_ (W)w); 4377 clear_pending (EV_A_ (W)w);
3314 if (expect_false (!ev_is_active (w))) 4378 if (expect_false (!ev_is_active (w)))
3315 return; 4379 return;
3316 4380
… …
3330} 4394}
3331#endif 4395#endif
3332 4396
3333#if EV_PREPARE_ENABLE 4397#if EV_PREPARE_ENABLE
3334void 4398void
3335ev_prepare_start (EV_P_ ev_prepare *w) 4399ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3336{ 4400{
3337 if (expect_false (ev_is_active (w))) 4401 if (expect_false (ev_is_active (w)))
3338 return; 4402 return;
3339 4403
3340 EV_FREQUENT_CHECK; 4404 EV_FREQUENT_CHECK;
… …
3345 4409
3346 EV_FREQUENT_CHECK; 4410 EV_FREQUENT_CHECK;
3347} 4411}
3348 4412
3349void 4413void
3350ev_prepare_stop (EV_P_ ev_prepare *w) 4414ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3351{ 4415{
3352 clear_pending (EV_A_ (W)w); 4416 clear_pending (EV_A_ (W)w);
3353 if (expect_false (!ev_is_active (w))) 4417 if (expect_false (!ev_is_active (w)))
3354 return; 4418 return;
3355 4419
… …
3368} 4432}
3369#endif 4433#endif
3370 4434
3371#if EV_CHECK_ENABLE 4435#if EV_CHECK_ENABLE
3372void 4436void
3373ev_check_start (EV_P_ ev_check *w) 4437ev_check_start (EV_P_ ev_check *w) EV_THROW
3374{ 4438{
3375 if (expect_false (ev_is_active (w))) 4439 if (expect_false (ev_is_active (w)))
3376 return; 4440 return;
3377 4441
3378 EV_FREQUENT_CHECK; 4442 EV_FREQUENT_CHECK;
… …
3383 4447
3384 EV_FREQUENT_CHECK; 4448 EV_FREQUENT_CHECK;
3385} 4449}
3386 4450
3387void 4451void
3388ev_check_stop (EV_P_ ev_check *w) 4452ev_check_stop (EV_P_ ev_check *w) EV_THROW
3389{ 4453{
3390 clear_pending (EV_A_ (W)w); 4454 clear_pending (EV_A_ (W)w);
3391 if (expect_false (!ev_is_active (w))) 4455 if (expect_false (!ev_is_active (w)))
3392 return; 4456 return;
3393 4457
… …
3406} 4470}
3407#endif 4471#endif
3408 4472
3409#if EV_EMBED_ENABLE 4473#if EV_EMBED_ENABLE
3410void noinline 4474void noinline
3411ev_embed_sweep (EV_P_ ev_embed *w) 4475ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3412{ 4476{
3413 ev_loop (w->other, EVLOOP_NONBLOCK); 4477 ev_run (w->other, EVRUN_NOWAIT);
3414} 4478}
3415 4479
3416static void 4480static void
3417embed_io_cb (EV_P_ ev_io *io, int revents) 4481embed_io_cb (EV_P_ ev_io *io, int revents)
3418{ 4482{
3419 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4483 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3420 4484
3421 if (ev_cb (w)) 4485 if (ev_cb (w))
3422 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4486 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3423 else 4487 else
3424 ev_loop (w->other, EVLOOP_NONBLOCK); 4488 ev_run (w->other, EVRUN_NOWAIT);
3425} 4489}
3426 4490
3427static void 4491static void
3428embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4492embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3429{ 4493{
… …
3433 EV_P = w->other; 4497 EV_P = w->other;
3434 4498
3435 while (fdchangecnt) 4499 while (fdchangecnt)
3436 { 4500 {
3437 fd_reify (EV_A); 4501 fd_reify (EV_A);
3438 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4502 ev_run (EV_A_ EVRUN_NOWAIT);
3439 } 4503 }
3440 } 4504 }
3441} 4505}
3442 4506
3443static void 4507static void
… …
3449 4513
3450 { 4514 {
3451 EV_P = w->other; 4515 EV_P = w->other;
3452 4516
3453 ev_loop_fork (EV_A); 4517 ev_loop_fork (EV_A);
3454 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4518 ev_run (EV_A_ EVRUN_NOWAIT);
3455 } 4519 }
3456 4520
3457 ev_embed_start (EV_A_ w); 4521 ev_embed_start (EV_A_ w);
3458} 4522}
3459 4523
… …
3464 ev_idle_stop (EV_A_ idle); 4528 ev_idle_stop (EV_A_ idle);
3465} 4529}
3466#endif 4530#endif
3467 4531
3468void 4532void
3469ev_embed_start (EV_P_ ev_embed *w) 4533ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3470{ 4534{
3471 if (expect_false (ev_is_active (w))) 4535 if (expect_false (ev_is_active (w)))
3472 return; 4536 return;
3473 4537
3474 { 4538 {
… …
3495 4559
3496 EV_FREQUENT_CHECK; 4560 EV_FREQUENT_CHECK;
3497} 4561}
3498 4562
3499void 4563void
3500ev_embed_stop (EV_P_ ev_embed *w) 4564ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3501{ 4565{
3502 clear_pending (EV_A_ (W)w); 4566 clear_pending (EV_A_ (W)w);
3503 if (expect_false (!ev_is_active (w))) 4567 if (expect_false (!ev_is_active (w)))
3504 return; 4568 return;
3505 4569
… …
3515} 4579}
3516#endif 4580#endif
3517 4581
3518#if EV_FORK_ENABLE 4582#if EV_FORK_ENABLE
3519void 4583void
3520ev_fork_start (EV_P_ ev_fork *w) 4584ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3521{ 4585{
3522 if (expect_false (ev_is_active (w))) 4586 if (expect_false (ev_is_active (w)))
3523 return; 4587 return;
3524 4588
3525 EV_FREQUENT_CHECK; 4589 EV_FREQUENT_CHECK;
… …
3530 4594
3531 EV_FREQUENT_CHECK; 4595 EV_FREQUENT_CHECK;
3532} 4596}
3533 4597
3534void 4598void
3535ev_fork_stop (EV_P_ ev_fork *w) 4599ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3536{ 4600{
3537 clear_pending (EV_A_ (W)w); 4601 clear_pending (EV_A_ (W)w);
3538 if (expect_false (!ev_is_active (w))) 4602 if (expect_false (!ev_is_active (w)))
3539 return; 4603 return;
3540 4604
… …
3551 4615
3552 EV_FREQUENT_CHECK; 4616 EV_FREQUENT_CHECK;
3553} 4617}
3554#endif 4618#endif
3555 4619
4620#if EV_CLEANUP_ENABLE
4621void
4622ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4623{
4624 if (expect_false (ev_is_active (w)))
4625 return;
4626
4627 EV_FREQUENT_CHECK;
4628
4629 ev_start (EV_A_ (W)w, ++cleanupcnt);
4630 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4631 cleanups [cleanupcnt - 1] = w;
4632
4633 /* cleanup watchers should never keep a refcount on the loop */
4634 ev_unref (EV_A);
4635 EV_FREQUENT_CHECK;
4636}
4637
4638void
4639ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4640{
4641 clear_pending (EV_A_ (W)w);
4642 if (expect_false (!ev_is_active (w)))
4643 return;
4644
4645 EV_FREQUENT_CHECK;
4646 ev_ref (EV_A);
4647
4648 {
4649 int active = ev_active (w);
4650
4651 cleanups [active - 1] = cleanups [--cleanupcnt];
4652 ev_active (cleanups [active - 1]) = active;
4653 }
4654
4655 ev_stop (EV_A_ (W)w);
4656
4657 EV_FREQUENT_CHECK;
4658}
4659#endif
4660
3556#if EV_ASYNC_ENABLE 4661#if EV_ASYNC_ENABLE
3557void 4662void
3558ev_async_start (EV_P_ ev_async *w) 4663ev_async_start (EV_P_ ev_async *w) EV_THROW
3559{ 4664{
3560 if (expect_false (ev_is_active (w))) 4665 if (expect_false (ev_is_active (w)))
3561 return; 4666 return;
4667
4668 w->sent = 0;
3562 4669
3563 evpipe_init (EV_A); 4670 evpipe_init (EV_A);
3564 4671
3565 EV_FREQUENT_CHECK; 4672 EV_FREQUENT_CHECK;
3566 4673
… …
3570 4677
3571 EV_FREQUENT_CHECK; 4678 EV_FREQUENT_CHECK;
3572} 4679}
3573 4680
3574void 4681void
3575ev_async_stop (EV_P_ ev_async *w) 4682ev_async_stop (EV_P_ ev_async *w) EV_THROW
3576{ 4683{
3577 clear_pending (EV_A_ (W)w); 4684 clear_pending (EV_A_ (W)w);
3578 if (expect_false (!ev_is_active (w))) 4685 if (expect_false (!ev_is_active (w)))
3579 return; 4686 return;
3580 4687
… …
3591 4698
3592 EV_FREQUENT_CHECK; 4699 EV_FREQUENT_CHECK;
3593} 4700}
3594 4701
3595void 4702void
3596ev_async_send (EV_P_ ev_async *w) 4703ev_async_send (EV_P_ ev_async *w) EV_THROW
3597{ 4704{
3598 w->sent = 1; 4705 w->sent = 1;
3599 evpipe_write (EV_A_ &async_pending); 4706 evpipe_write (EV_A_ &async_pending);
3600} 4707}
3601#endif 4708#endif
… …
3638 4745
3639 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4746 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3640} 4747}
3641 4748
3642void 4749void
3643ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4750ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3644{ 4751{
3645 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4752 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3646 4753
3647 if (expect_false (!once)) 4754 if (expect_false (!once))
3648 { 4755 {
3649 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4756 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3650 return; 4757 return;
3651 } 4758 }
3652 4759
3653 once->cb = cb; 4760 once->cb = cb;
3654 once->arg = arg; 4761 once->arg = arg;
… …
3669} 4776}
3670 4777
3671/*****************************************************************************/ 4778/*****************************************************************************/
3672 4779
3673#if EV_WALK_ENABLE 4780#if EV_WALK_ENABLE
3674void 4781void ecb_cold
3675ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4782ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3676{ 4783{
3677 int i, j; 4784 int i, j;
3678 ev_watcher_list *wl, *wn; 4785 ev_watcher_list *wl, *wn;
3679 4786
3680 if (types & (EV_IO | EV_EMBED)) 4787 if (types & (EV_IO | EV_EMBED))
… …
3723 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4830 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3724#endif 4831#endif
3725 4832
3726#if EV_IDLE_ENABLE 4833#if EV_IDLE_ENABLE
3727 if (types & EV_IDLE) 4834 if (types & EV_IDLE)
3728 for (j = NUMPRI; i--; ) 4835 for (j = NUMPRI; j--; )
3729 for (i = idlecnt [j]; i--; ) 4836 for (i = idlecnt [j]; i--; )
3730 cb (EV_A_ EV_IDLE, idles [j][i]); 4837 cb (EV_A_ EV_IDLE, idles [j][i]);
3731#endif 4838#endif
3732 4839
3733#if EV_FORK_ENABLE 4840#if EV_FORK_ENABLE
… …
3769 } 4876 }
3770#endif 4877#endif
3771 4878
3772#if EV_CHILD_ENABLE 4879#if EV_CHILD_ENABLE
3773 if (types & EV_CHILD) 4880 if (types & EV_CHILD)
3774 for (i = EV_PID_HASHSIZE; i--; ) 4881 for (i = (EV_PID_HASHSIZE); i--; )
3775 for (wl = childs [i]; wl; ) 4882 for (wl = childs [i]; wl; )
3776 { 4883 {
3777 wn = wl->next; 4884 wn = wl->next;
3778 cb (EV_A_ EV_CHILD, wl); 4885 cb (EV_A_ EV_CHILD, wl);
3779 wl = wn; 4886 wl = wn;
… …
3786 4893
3787#if EV_MULTIPLICITY 4894#if EV_MULTIPLICITY
3788 #include "ev_wrap.h" 4895 #include "ev_wrap.h"
3789#endif 4896#endif
3790 4897
3791#ifdef __cplusplus
3792}
3793#endif
3794

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