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Comparing libev/ev.c (file contents):
Revision 1.312 by root, Wed Aug 12 18:48:17 2009 UTC vs.
Revision 1.477 by root, Sun Aug 9 00:13:28 2015 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 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
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h>
157#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
158#include <fcntl.h> 169#include <fcntl.h>
159#include <stddef.h> 170#include <stddef.h>
160 171
161#include <stdio.h> 172#include <stdio.h>
162 173
163#include <assert.h> 174#include <assert.h>
164#include <errno.h> 175#include <errno.h>
165#include <sys/types.h> 176#include <sys/types.h>
166#include <time.h> 177#include <time.h>
178#include <limits.h>
167 179
168#include <signal.h> 180#include <signal.h>
169 181
170#ifdef EV_H 182#ifdef EV_H
171# include EV_H 183# include EV_H
172#else 184#else
173# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
174#endif 197#endif
175 198
176#ifndef _WIN32 199#ifndef _WIN32
177# include <sys/time.h> 200# include <sys/time.h>
178# include <sys/wait.h> 201# include <sys/wait.h>
179# include <unistd.h> 202# include <unistd.h>
180#else 203#else
181# include <io.h> 204# include <io.h>
182# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
183# include <windows.h> 207# include <windows.h>
184# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
186# endif 210# endif
211# undef EV_AVOID_STDIO
187#endif 212#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
188 221
189/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
190 223
191/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
192#if defined (EV_NSIG) 225#if defined EV_NSIG
193/* use what's provided */ 226/* use what's provided */
194#elif defined (NSIG) 227#elif defined NSIG
195# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
196#elif defined(_NSIG) 229#elif defined _NSIG
197# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
198#elif defined (SIGMAX) 231#elif defined SIGMAX
199# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
200#elif defined (SIG_MAX) 233#elif defined SIG_MAX
201# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
202#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
203# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
204#elif defined (MAXSIG) 237#elif defined MAXSIG
205# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
206#elif defined (MAX_SIG) 239#elif defined MAX_SIG
207# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
208#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
209# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
210#elif defined (_sys_nsig) 243#elif defined _sys_nsig
211# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212#else 245#else
213# error "unable to find value for NSIG, please report" 246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
214/* to make it compile regardless, just remove the above line */ 247#endif
215# define EV_NSIG 65 248
249#ifndef EV_USE_FLOOR
250# define EV_USE_FLOOR 0
216#endif 251#endif
217 252
218#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
219# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
220# define EV_USE_CLOCK_SYSCALL 1 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
221# else 256# else
222# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
223# endif 258# endif
224#endif 259#endif
225 260
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
226#ifndef EV_USE_MONOTONIC 270#ifndef EV_USE_MONOTONIC
227# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 271# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
228# define EV_USE_MONOTONIC 1 272# define EV_USE_MONOTONIC EV_FEATURE_OS
229# else 273# else
230# define EV_USE_MONOTONIC 0 274# define EV_USE_MONOTONIC 0
231# endif 275# endif
232#endif 276#endif
233 277
… …
235# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 279# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
236#endif 280#endif
237 281
238#ifndef EV_USE_NANOSLEEP 282#ifndef EV_USE_NANOSLEEP
239# if _POSIX_C_SOURCE >= 199309L 283# if _POSIX_C_SOURCE >= 199309L
240# define EV_USE_NANOSLEEP 1 284# define EV_USE_NANOSLEEP EV_FEATURE_OS
241# else 285# else
242# define EV_USE_NANOSLEEP 0 286# define EV_USE_NANOSLEEP 0
243# endif 287# endif
244#endif 288#endif
245 289
246#ifndef EV_USE_SELECT 290#ifndef EV_USE_SELECT
247# define EV_USE_SELECT 1 291# define EV_USE_SELECT EV_FEATURE_BACKENDS
248#endif 292#endif
249 293
250#ifndef EV_USE_POLL 294#ifndef EV_USE_POLL
251# ifdef _WIN32 295# ifdef _WIN32
252# define EV_USE_POLL 0 296# define EV_USE_POLL 0
253# else 297# else
254# define EV_USE_POLL 1 298# define EV_USE_POLL EV_FEATURE_BACKENDS
255# endif 299# endif
256#endif 300#endif
257 301
258#ifndef EV_USE_EPOLL 302#ifndef EV_USE_EPOLL
259# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
260# define EV_USE_EPOLL 1 304# define EV_USE_EPOLL EV_FEATURE_BACKENDS
261# else 305# else
262# define EV_USE_EPOLL 0 306# define EV_USE_EPOLL 0
263# endif 307# endif
264#endif 308#endif
265 309
… …
271# define EV_USE_PORT 0 315# define EV_USE_PORT 0
272#endif 316#endif
273 317
274#ifndef EV_USE_INOTIFY 318#ifndef EV_USE_INOTIFY
275# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
276# define EV_USE_INOTIFY 1 320# define EV_USE_INOTIFY EV_FEATURE_OS
277# else 321# else
278# define EV_USE_INOTIFY 0 322# define EV_USE_INOTIFY 0
279# endif 323# endif
280#endif 324#endif
281 325
282#ifndef EV_PID_HASHSIZE 326#ifndef EV_PID_HASHSIZE
283# if EV_MINIMAL 327# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
284# define EV_PID_HASHSIZE 1
285# else
286# define EV_PID_HASHSIZE 16
287# endif
288#endif 328#endif
289 329
290#ifndef EV_INOTIFY_HASHSIZE 330#ifndef EV_INOTIFY_HASHSIZE
291# if EV_MINIMAL 331# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
292# define EV_INOTIFY_HASHSIZE 1
293# else
294# define EV_INOTIFY_HASHSIZE 16
295# endif
296#endif 332#endif
297 333
298#ifndef EV_USE_EVENTFD 334#ifndef EV_USE_EVENTFD
299# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 335# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
300# define EV_USE_EVENTFD 1 336# define EV_USE_EVENTFD EV_FEATURE_OS
301# else 337# else
302# define EV_USE_EVENTFD 0 338# define EV_USE_EVENTFD 0
303# endif 339# endif
304#endif 340#endif
305 341
306#ifndef EV_USE_SIGNALFD 342#ifndef EV_USE_SIGNALFD
307# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 343# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
308# define EV_USE_SIGNALFD 1 344# define EV_USE_SIGNALFD EV_FEATURE_OS
309# else 345# else
310# define EV_USE_SIGNALFD 0 346# define EV_USE_SIGNALFD 0
311# endif 347# endif
312#endif 348#endif
313 349
… …
316# define EV_USE_4HEAP 1 352# define EV_USE_4HEAP 1
317# define EV_HEAP_CACHE_AT 1 353# define EV_HEAP_CACHE_AT 1
318#endif 354#endif
319 355
320#ifndef EV_VERIFY 356#ifndef EV_VERIFY
321# define EV_VERIFY !EV_MINIMAL 357# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
322#endif 358#endif
323 359
324#ifndef EV_USE_4HEAP 360#ifndef EV_USE_4HEAP
325# define EV_USE_4HEAP !EV_MINIMAL 361# define EV_USE_4HEAP EV_FEATURE_DATA
326#endif 362#endif
327 363
328#ifndef EV_HEAP_CACHE_AT 364#ifndef EV_HEAP_CACHE_AT
329# 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
330#endif 382#endif
331 383
332/* 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, */
333/* which makes programs even slower. might work on other unices, too. */ 385/* which makes programs even slower. might work on other unices, too. */
334#if EV_USE_CLOCK_SYSCALL 386#if EV_USE_CLOCK_SYSCALL
335# include <syscall.h> 387# include <sys/syscall.h>
336# ifdef SYS_clock_gettime 388# ifdef SYS_clock_gettime
337# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 389# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
338# undef EV_USE_MONOTONIC 390# undef EV_USE_MONOTONIC
339# define EV_USE_MONOTONIC 1 391# define EV_USE_MONOTONIC 1
340# else 392# else
… …
359# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
360# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
361#endif 413#endif
362 414
363#if !EV_USE_NANOSLEEP 415#if !EV_USE_NANOSLEEP
364# ifndef _WIN32 416/* hp-ux has it in sys/time.h, which we unconditionally include above */
417# if !defined _WIN32 && !defined __hpux
365# include <sys/select.h> 418# include <sys/select.h>
366# endif 419# endif
367#endif 420#endif
368 421
369#if EV_USE_INOTIFY 422#if EV_USE_INOTIFY
370# include <sys/utsname.h>
371# include <sys/statfs.h> 423# include <sys/statfs.h>
372# include <sys/inotify.h> 424# include <sys/inotify.h>
373/* 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 */
374# ifndef IN_DONT_FOLLOW 426# ifndef IN_DONT_FOLLOW
375# undef EV_USE_INOTIFY 427# undef EV_USE_INOTIFY
376# define EV_USE_INOTIFY 0 428# define EV_USE_INOTIFY 0
377# endif 429# endif
378#endif
379
380#if EV_SELECT_IS_WINSOCKET
381# include <winsock.h>
382#endif 430#endif
383 431
384#if EV_USE_EVENTFD 432#if EV_USE_EVENTFD
385/* 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 */
386# include <stdint.h> 434# include <stdint.h>
… …
392# define EFD_CLOEXEC O_CLOEXEC 440# define EFD_CLOEXEC O_CLOEXEC
393# else 441# else
394# define EFD_CLOEXEC 02000000 442# define EFD_CLOEXEC 02000000
395# endif 443# endif
396# endif 444# endif
397# ifdef __cplusplus 445EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
398extern "C" { 446#endif
447
448#if EV_USE_SIGNALFD
449/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
450# include <stdint.h>
451# ifndef SFD_NONBLOCK
452# define SFD_NONBLOCK O_NONBLOCK
399# endif 453# endif
400int eventfd (unsigned int initval, int flags); 454# ifndef SFD_CLOEXEC
401# ifdef __cplusplus 455# ifdef O_CLOEXEC
402} 456# define SFD_CLOEXEC O_CLOEXEC
457# else
458# define SFD_CLOEXEC 02000000
459# endif
403# endif 460# endif
404#endif 461EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
405 462
406#if EV_USE_SIGNALFD 463struct signalfd_siginfo
407# include <sys/signalfd.h> 464{
465 uint32_t ssi_signo;
466 char pad[128 - sizeof (uint32_t)];
467};
408#endif 468#endif
409 469
410/**/ 470/**/
411 471
412#if EV_VERIFY >= 3 472#if EV_VERIFY >= 3
413# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 473# define EV_FREQUENT_CHECK ev_verify (EV_A)
414#else 474#else
415# define EV_FREQUENT_CHECK do { } while (0) 475# define EV_FREQUENT_CHECK do { } while (0)
416#endif 476#endif
417 477
418/* 478/*
419 * This is used to avoid floating point rounding problems. 479 * This is used to work around floating point rounding problems.
420 * It is added to ev_rt_now when scheduling periodics
421 * to ensure progress, time-wise, even when rounding
422 * errors are against us.
423 * This value is good at least till the year 4000. 480 * This value is good at least till the year 4000.
424 * Better solutions welcome.
425 */ 481 */
426#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 */
427 484
428#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) */
429#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) */
430/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
431 487
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 (©) 2009-2015 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 0x00010004
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;
432#if __GNUC__ >= 4 546 #if __GNUC__
433# define expect(expr,value) __builtin_expect ((expr),(value)) 547 typedef signed long long int64_t;
434# 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
435#else 562#else
436# define expect(expr,value) (expr) 563 #include <inttypes.h>
437# define noinline 564 #if UINTMAX_MAX > 0xffffffffU
438# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 565 #define ECB_PTRSIZE 8
439# define inline 566 #else
567 #define ECB_PTRSIZE 4
568 #endif
440# endif 569#endif
570
571#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
572#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
573
574/* work around x32 idiocy by defining proper macros */
575#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
576 #if _ILP32
577 #define ECB_AMD64_X32 1
578 #else
579 #define ECB_AMD64 1
441#endif 580 #endif
581#endif
442 582
583/* many compilers define _GNUC_ to some versions but then only implement
584 * what their idiot authors think are the "more important" extensions,
585 * causing enormous grief in return for some better fake benchmark numbers.
586 * or so.
587 * we try to detect these and simply assume they are not gcc - if they have
588 * an issue with that they should have done it right in the first place.
589 */
590#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
591 #define ECB_GCC_VERSION(major,minor) 0
592#else
593 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
594#endif
595
596#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
597
598#if __clang__ && defined __has_builtin
599 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
600#else
601 #define ECB_CLANG_BUILTIN(x) 0
602#endif
603
604#if __clang__ && defined __has_extension
605 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
606#else
607 #define ECB_CLANG_EXTENSION(x) 0
608#endif
609
610#define ECB_CPP (__cplusplus+0)
611#define ECB_CPP11 (__cplusplus >= 201103L)
612
613#if ECB_CPP
614 #define ECB_C 0
615 #define ECB_STDC_VERSION 0
616#else
617 #define ECB_C 1
618 #define ECB_STDC_VERSION __STDC_VERSION__
619#endif
620
621#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
622#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
623
624#if ECB_CPP
625 #define ECB_EXTERN_C extern "C"
626 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
627 #define ECB_EXTERN_C_END }
628#else
629 #define ECB_EXTERN_C extern
630 #define ECB_EXTERN_C_BEG
631 #define ECB_EXTERN_C_END
632#endif
633
634/*****************************************************************************/
635
636/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
637/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
638
639#if ECB_NO_THREADS
640 #define ECB_NO_SMP 1
641#endif
642
643#if ECB_NO_SMP
644 #define ECB_MEMORY_FENCE do { } while (0)
645#endif
646
647/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
648#if __xlC__ && ECB_CPP
649 #include <builtins.h>
650#endif
651
652#ifndef ECB_MEMORY_FENCE
653 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
654 #if __i386 || __i386__
655 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
656 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
657 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
658 #elif ECB_GCC_AMD64
659 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
660 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
661 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
662 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
664 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
665 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
666 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
667 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
668 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
669 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
670 #elif __aarch64__
671 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
672 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
673 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
674 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
675 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
676 #elif defined __s390__ || defined __s390x__
677 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
678 #elif defined __mips__
679 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
680 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
681 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
682 #elif defined __alpha__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
684 #elif defined __hppa__
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
686 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
687 #elif defined __ia64__
688 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
689 #elif defined __m68k__
690 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
691 #elif defined __m88k__
692 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
693 #elif defined __sh__
694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
695 #endif
696 #endif
697#endif
698
699#ifndef ECB_MEMORY_FENCE
700 #if ECB_GCC_VERSION(4,7)
701 /* see comment below (stdatomic.h) about the C11 memory model. */
702 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
703 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
704 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
705
706 #elif ECB_CLANG_EXTENSION(c_atomic)
707 /* see comment below (stdatomic.h) about the C11 memory model. */
708 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
709 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
710 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
711
712 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
713 #define ECB_MEMORY_FENCE __sync_synchronize ()
714 #elif _MSC_VER >= 1500 /* VC++ 2008 */
715 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
716 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
717 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
718 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
719 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
720 #elif _MSC_VER >= 1400 /* VC++ 2005 */
721 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
722 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
723 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
724 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
725 #elif defined _WIN32
726 #include <WinNT.h>
727 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
728 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
729 #include <mbarrier.h>
730 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
731 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
732 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
733 #elif __xlC__
734 #define ECB_MEMORY_FENCE __sync ()
735 #endif
736#endif
737
738#ifndef ECB_MEMORY_FENCE
739 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
740 /* we assume that these memory fences work on all variables/all memory accesses, */
741 /* not just C11 atomics and atomic accesses */
742 #include <stdatomic.h>
743 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
744 /* any fence other than seq_cst, which isn't very efficient for us. */
745 /* Why that is, we don't know - either the C11 memory model is quite useless */
746 /* for most usages, or gcc and clang have a bug */
747 /* I *currently* lean towards the latter, and inefficiently implement */
748 /* all three of ecb's fences as a seq_cst fence */
749 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
750 /* for all __atomic_thread_fence's except seq_cst */
751 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
752 #endif
753#endif
754
755#ifndef ECB_MEMORY_FENCE
756 #if !ECB_AVOID_PTHREADS
757 /*
758 * if you get undefined symbol references to pthread_mutex_lock,
759 * or failure to find pthread.h, then you should implement
760 * the ECB_MEMORY_FENCE operations for your cpu/compiler
761 * OR provide pthread.h and link against the posix thread library
762 * of your system.
763 */
764 #include <pthread.h>
765 #define ECB_NEEDS_PTHREADS 1
766 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
767
768 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
769 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
770 #endif
771#endif
772
773#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
774 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
775#endif
776
777#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
778 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
779#endif
780
781/*****************************************************************************/
782
783#if ECB_CPP
784 #define ecb_inline static inline
785#elif ECB_GCC_VERSION(2,5)
786 #define ecb_inline static __inline__
787#elif ECB_C99
788 #define ecb_inline static inline
789#else
790 #define ecb_inline static
791#endif
792
793#if ECB_GCC_VERSION(3,3)
794 #define ecb_restrict __restrict__
795#elif ECB_C99
796 #define ecb_restrict restrict
797#else
798 #define ecb_restrict
799#endif
800
801typedef int ecb_bool;
802
803#define ECB_CONCAT_(a, b) a ## b
804#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
805#define ECB_STRINGIFY_(a) # a
806#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
807#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
808
809#define ecb_function_ ecb_inline
810
811#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
812 #define ecb_attribute(attrlist) __attribute__ (attrlist)
813#else
814 #define ecb_attribute(attrlist)
815#endif
816
817#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
818 #define ecb_is_constant(expr) __builtin_constant_p (expr)
819#else
820 /* possible C11 impl for integral types
821 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
822 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
823
824 #define ecb_is_constant(expr) 0
825#endif
826
827#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
828 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
829#else
830 #define ecb_expect(expr,value) (expr)
831#endif
832
833#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
834 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
835#else
836 #define ecb_prefetch(addr,rw,locality)
837#endif
838
839/* no emulation for ecb_decltype */
840#if ECB_CPP11
841 // older implementations might have problems with decltype(x)::type, work around it
842 template<class T> struct ecb_decltype_t { typedef T type; };
843 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
844#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
845 #define ecb_decltype(x) __typeof__ (x)
846#endif
847
848#if _MSC_VER >= 1300
849 #define ecb_deprecated __declspec (deprecated)
850#else
851 #define ecb_deprecated ecb_attribute ((__deprecated__))
852#endif
853
854#if _MSC_VER >= 1500
855 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
856#elif ECB_GCC_VERSION(4,5)
857 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
858#else
859 #define ecb_deprecated_message(msg) ecb_deprecated
860#endif
861
862#if _MSC_VER >= 1400
863 #define ecb_noinline __declspec (noinline)
864#else
865 #define ecb_noinline ecb_attribute ((__noinline__))
866#endif
867
868#define ecb_unused ecb_attribute ((__unused__))
869#define ecb_const ecb_attribute ((__const__))
870#define ecb_pure ecb_attribute ((__pure__))
871
872#if ECB_C11 || __IBMC_NORETURN
873 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
874 #define ecb_noreturn _Noreturn
875#elif ECB_CPP11
876 #define ecb_noreturn [[noreturn]]
877#elif _MSC_VER >= 1200
878 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
879 #define ecb_noreturn __declspec (noreturn)
880#else
881 #define ecb_noreturn ecb_attribute ((__noreturn__))
882#endif
883
884#if ECB_GCC_VERSION(4,3)
885 #define ecb_artificial ecb_attribute ((__artificial__))
886 #define ecb_hot ecb_attribute ((__hot__))
887 #define ecb_cold ecb_attribute ((__cold__))
888#else
889 #define ecb_artificial
890 #define ecb_hot
891 #define ecb_cold
892#endif
893
894/* put around conditional expressions if you are very sure that the */
895/* expression is mostly true or mostly false. note that these return */
896/* booleans, not the expression. */
443#define expect_false(expr) expect ((expr) != 0, 0) 897#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
444#define expect_true(expr) expect ((expr) != 0, 1) 898#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
899/* for compatibility to the rest of the world */
900#define ecb_likely(expr) ecb_expect_true (expr)
901#define ecb_unlikely(expr) ecb_expect_false (expr)
902
903/* count trailing zero bits and count # of one bits */
904#if ECB_GCC_VERSION(3,4) \
905 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
906 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
907 && ECB_CLANG_BUILTIN(__builtin_popcount))
908 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
909 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
910 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
911 #define ecb_ctz32(x) __builtin_ctz (x)
912 #define ecb_ctz64(x) __builtin_ctzll (x)
913 #define ecb_popcount32(x) __builtin_popcount (x)
914 /* no popcountll */
915#else
916 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
917 ecb_function_ ecb_const int
918 ecb_ctz32 (uint32_t x)
919 {
920 int r = 0;
921
922 x &= ~x + 1; /* this isolates the lowest bit */
923
924#if ECB_branchless_on_i386
925 r += !!(x & 0xaaaaaaaa) << 0;
926 r += !!(x & 0xcccccccc) << 1;
927 r += !!(x & 0xf0f0f0f0) << 2;
928 r += !!(x & 0xff00ff00) << 3;
929 r += !!(x & 0xffff0000) << 4;
930#else
931 if (x & 0xaaaaaaaa) r += 1;
932 if (x & 0xcccccccc) r += 2;
933 if (x & 0xf0f0f0f0) r += 4;
934 if (x & 0xff00ff00) r += 8;
935 if (x & 0xffff0000) r += 16;
936#endif
937
938 return r;
939 }
940
941 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
942 ecb_function_ ecb_const int
943 ecb_ctz64 (uint64_t x)
944 {
945 int shift = x & 0xffffffffU ? 0 : 32;
946 return ecb_ctz32 (x >> shift) + shift;
947 }
948
949 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
950 ecb_function_ ecb_const int
951 ecb_popcount32 (uint32_t x)
952 {
953 x -= (x >> 1) & 0x55555555;
954 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
955 x = ((x >> 4) + x) & 0x0f0f0f0f;
956 x *= 0x01010101;
957
958 return x >> 24;
959 }
960
961 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
962 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
963 {
964 int r = 0;
965
966 if (x >> 16) { x >>= 16; r += 16; }
967 if (x >> 8) { x >>= 8; r += 8; }
968 if (x >> 4) { x >>= 4; r += 4; }
969 if (x >> 2) { x >>= 2; r += 2; }
970 if (x >> 1) { r += 1; }
971
972 return r;
973 }
974
975 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
976 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
977 {
978 int r = 0;
979
980 if (x >> 32) { x >>= 32; r += 32; }
981
982 return r + ecb_ld32 (x);
983 }
984#endif
985
986ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
987ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
988ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
989ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
990
991ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
992ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
993{
994 return ( (x * 0x0802U & 0x22110U)
995 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
996}
997
998ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
999ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1000{
1001 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1002 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1003 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1004 x = ( x >> 8 ) | ( x << 8);
1005
1006 return x;
1007}
1008
1009ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1010ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1011{
1012 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1013 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1014 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1015 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1016 x = ( x >> 16 ) | ( x << 16);
1017
1018 return x;
1019}
1020
1021/* popcount64 is only available on 64 bit cpus as gcc builtin */
1022/* so for this version we are lazy */
1023ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1024ecb_function_ ecb_const int
1025ecb_popcount64 (uint64_t x)
1026{
1027 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1028}
1029
1030ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1031ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1032ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1033ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1034ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1035ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1036ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1037ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1038
1039ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1040ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1041ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1042ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1043ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1044ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1045ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1046ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1047
1048#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1049 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1050 #define ecb_bswap16(x) __builtin_bswap16 (x)
1051 #else
1052 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1053 #endif
1054 #define ecb_bswap32(x) __builtin_bswap32 (x)
1055 #define ecb_bswap64(x) __builtin_bswap64 (x)
1056#elif _MSC_VER
1057 #include <stdlib.h>
1058 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1059 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1060 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1061#else
1062 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1063 ecb_function_ ecb_const uint16_t
1064 ecb_bswap16 (uint16_t x)
1065 {
1066 return ecb_rotl16 (x, 8);
1067 }
1068
1069 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1070 ecb_function_ ecb_const uint32_t
1071 ecb_bswap32 (uint32_t x)
1072 {
1073 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1074 }
1075
1076 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1077 ecb_function_ ecb_const uint64_t
1078 ecb_bswap64 (uint64_t x)
1079 {
1080 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1081 }
1082#endif
1083
1084#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1085 #define ecb_unreachable() __builtin_unreachable ()
1086#else
1087 /* this seems to work fine, but gcc always emits a warning for it :/ */
1088 ecb_inline ecb_noreturn void ecb_unreachable (void);
1089 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1090#endif
1091
1092/* try to tell the compiler that some condition is definitely true */
1093#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1094
1095ecb_inline ecb_const unsigned char ecb_byteorder_helper (void);
1096ecb_inline ecb_const unsigned char
1097ecb_byteorder_helper (void)
1098{
1099 /* the union code still generates code under pressure in gcc, */
1100 /* but less than using pointers, and always seems to */
1101 /* successfully return a constant. */
1102 /* the reason why we have this horrible preprocessor mess */
1103 /* is to avoid it in all cases, at least on common architectures */
1104 /* or when using a recent enough gcc version (>= 4.6) */
1105#if ((__i386 || __i386__) && !__VOS__) || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64
1106 return 0x44;
1107#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1108 return 0x44;
1109#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1110 return 0x11;
1111#else
1112 union
1113 {
1114 uint32_t i;
1115 uint8_t c;
1116 } u = { 0x11223344 };
1117 return u.c;
1118#endif
1119}
1120
1121ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1122ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1123ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1124ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1125
1126#if ECB_GCC_VERSION(3,0) || ECB_C99
1127 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1128#else
1129 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1130#endif
1131
1132#if ECB_CPP
1133 template<typename T>
1134 static inline T ecb_div_rd (T val, T div)
1135 {
1136 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1137 }
1138 template<typename T>
1139 static inline T ecb_div_ru (T val, T div)
1140 {
1141 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1142 }
1143#else
1144 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1145 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1146#endif
1147
1148#if ecb_cplusplus_does_not_suck
1149 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1150 template<typename T, int N>
1151 static inline int ecb_array_length (const T (&arr)[N])
1152 {
1153 return N;
1154 }
1155#else
1156 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1157#endif
1158
1159/*******************************************************************************/
1160/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1161
1162/* basically, everything uses "ieee pure-endian" floating point numbers */
1163/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1164#if 0 \
1165 || __i386 || __i386__ \
1166 || ECB_GCC_AMD64 \
1167 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1168 || defined __s390__ || defined __s390x__ \
1169 || defined __mips__ \
1170 || defined __alpha__ \
1171 || defined __hppa__ \
1172 || defined __ia64__ \
1173 || defined __m68k__ \
1174 || defined __m88k__ \
1175 || defined __sh__ \
1176 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1177 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1178 || defined __aarch64__
1179 #define ECB_STDFP 1
1180 #include <string.h> /* for memcpy */
1181#else
1182 #define ECB_STDFP 0
1183#endif
1184
1185#ifndef ECB_NO_LIBM
1186
1187 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1188
1189 /* only the oldest of old doesn't have this one. solaris. */
1190 #ifdef INFINITY
1191 #define ECB_INFINITY INFINITY
1192 #else
1193 #define ECB_INFINITY HUGE_VAL
1194 #endif
1195
1196 #ifdef NAN
1197 #define ECB_NAN NAN
1198 #else
1199 #define ECB_NAN ECB_INFINITY
1200 #endif
1201
1202 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1203 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1204 #define ecb_frexpf(x,e) frexpf ((x), (e))
1205 #else
1206 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1207 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1208 #endif
1209
1210 /* converts an ieee half/binary16 to a float */
1211 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1212 ecb_function_ ecb_const float
1213 ecb_binary16_to_float (uint16_t x)
1214 {
1215 int e = (x >> 10) & 0x1f;
1216 int m = x & 0x3ff;
1217 float r;
1218
1219 if (!e ) r = ecb_ldexpf (m , -24);
1220 else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25);
1221 else if (m ) r = ECB_NAN;
1222 else r = ECB_INFINITY;
1223
1224 return x & 0x8000 ? -r : r;
1225 }
1226
1227 /* convert a float to ieee single/binary32 */
1228 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1229 ecb_function_ ecb_const uint32_t
1230 ecb_float_to_binary32 (float x)
1231 {
1232 uint32_t r;
1233
1234 #if ECB_STDFP
1235 memcpy (&r, &x, 4);
1236 #else
1237 /* slow emulation, works for anything but -0 */
1238 uint32_t m;
1239 int e;
1240
1241 if (x == 0e0f ) return 0x00000000U;
1242 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1243 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1244 if (x != x ) return 0x7fbfffffU;
1245
1246 m = ecb_frexpf (x, &e) * 0x1000000U;
1247
1248 r = m & 0x80000000U;
1249
1250 if (r)
1251 m = -m;
1252
1253 if (e <= -126)
1254 {
1255 m &= 0xffffffU;
1256 m >>= (-125 - e);
1257 e = -126;
1258 }
1259
1260 r |= (e + 126) << 23;
1261 r |= m & 0x7fffffU;
1262 #endif
1263
1264 return r;
1265 }
1266
1267 /* converts an ieee single/binary32 to a float */
1268 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1269 ecb_function_ ecb_const float
1270 ecb_binary32_to_float (uint32_t x)
1271 {
1272 float r;
1273
1274 #if ECB_STDFP
1275 memcpy (&r, &x, 4);
1276 #else
1277 /* emulation, only works for normals and subnormals and +0 */
1278 int neg = x >> 31;
1279 int e = (x >> 23) & 0xffU;
1280
1281 x &= 0x7fffffU;
1282
1283 if (e)
1284 x |= 0x800000U;
1285 else
1286 e = 1;
1287
1288 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1289 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1290
1291 r = neg ? -r : r;
1292 #endif
1293
1294 return r;
1295 }
1296
1297 /* convert a double to ieee double/binary64 */
1298 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1299 ecb_function_ ecb_const uint64_t
1300 ecb_double_to_binary64 (double x)
1301 {
1302 uint64_t r;
1303
1304 #if ECB_STDFP
1305 memcpy (&r, &x, 8);
1306 #else
1307 /* slow emulation, works for anything but -0 */
1308 uint64_t m;
1309 int e;
1310
1311 if (x == 0e0 ) return 0x0000000000000000U;
1312 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1313 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1314 if (x != x ) return 0X7ff7ffffffffffffU;
1315
1316 m = frexp (x, &e) * 0x20000000000000U;
1317
1318 r = m & 0x8000000000000000;;
1319
1320 if (r)
1321 m = -m;
1322
1323 if (e <= -1022)
1324 {
1325 m &= 0x1fffffffffffffU;
1326 m >>= (-1021 - e);
1327 e = -1022;
1328 }
1329
1330 r |= ((uint64_t)(e + 1022)) << 52;
1331 r |= m & 0xfffffffffffffU;
1332 #endif
1333
1334 return r;
1335 }
1336
1337 /* converts an ieee double/binary64 to a double */
1338 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1339 ecb_function_ ecb_const double
1340 ecb_binary64_to_double (uint64_t x)
1341 {
1342 double r;
1343
1344 #if ECB_STDFP
1345 memcpy (&r, &x, 8);
1346 #else
1347 /* emulation, only works for normals and subnormals and +0 */
1348 int neg = x >> 63;
1349 int e = (x >> 52) & 0x7ffU;
1350
1351 x &= 0xfffffffffffffU;
1352
1353 if (e)
1354 x |= 0x10000000000000U;
1355 else
1356 e = 1;
1357
1358 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1359 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1360
1361 r = neg ? -r : r;
1362 #endif
1363
1364 return r;
1365 }
1366
1367#endif
1368
1369#endif
1370
1371/* ECB.H END */
1372
1373#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1374/* if your architecture doesn't need memory fences, e.g. because it is
1375 * single-cpu/core, or if you use libev in a project that doesn't use libev
1376 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1377 * libev, in which cases the memory fences become nops.
1378 * alternatively, you can remove this #error and link against libpthread,
1379 * which will then provide the memory fences.
1380 */
1381# error "memory fences not defined for your architecture, please report"
1382#endif
1383
1384#ifndef ECB_MEMORY_FENCE
1385# define ECB_MEMORY_FENCE do { } while (0)
1386# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1387# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1388#endif
1389
1390#define expect_false(cond) ecb_expect_false (cond)
1391#define expect_true(cond) ecb_expect_true (cond)
1392#define noinline ecb_noinline
1393
445#define inline_size static inline 1394#define inline_size ecb_inline
446 1395
447#if EV_MINIMAL 1396#if EV_FEATURE_CODE
1397# define inline_speed ecb_inline
1398#else
448# define inline_speed static noinline 1399# define inline_speed static noinline
449#else
450# define inline_speed static inline
451#endif 1400#endif
452 1401
453#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1402#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
454 1403
455#if EV_MINPRI == EV_MAXPRI 1404#if EV_MINPRI == EV_MAXPRI
… …
468#define ev_active(w) ((W)(w))->active 1417#define ev_active(w) ((W)(w))->active
469#define ev_at(w) ((WT)(w))->at 1418#define ev_at(w) ((WT)(w))->at
470 1419
471#if EV_USE_REALTIME 1420#if EV_USE_REALTIME
472/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1421/* sig_atomic_t is used to avoid per-thread variables or locking but still */
473/* giving it a reasonably high chance of working on typical architetcures */ 1422/* giving it a reasonably high chance of working on typical architectures */
474static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1423static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
475#endif 1424#endif
476 1425
477#if EV_USE_MONOTONIC 1426#if EV_USE_MONOTONIC
478static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1427static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
479#endif 1428#endif
480 1429
1430#ifndef EV_FD_TO_WIN32_HANDLE
1431# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1432#endif
1433#ifndef EV_WIN32_HANDLE_TO_FD
1434# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1435#endif
1436#ifndef EV_WIN32_CLOSE_FD
1437# define EV_WIN32_CLOSE_FD(fd) close (fd)
1438#endif
1439
481#ifdef _WIN32 1440#ifdef _WIN32
482# include "ev_win32.c" 1441# include "ev_win32.c"
483#endif 1442#endif
484 1443
485/*****************************************************************************/ 1444/*****************************************************************************/
486 1445
1446/* define a suitable floor function (only used by periodics atm) */
1447
1448#if EV_USE_FLOOR
1449# include <math.h>
1450# define ev_floor(v) floor (v)
1451#else
1452
1453#include <float.h>
1454
1455/* a floor() replacement function, should be independent of ev_tstamp type */
1456static ev_tstamp noinline
1457ev_floor (ev_tstamp v)
1458{
1459 /* the choice of shift factor is not terribly important */
1460#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1461 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1462#else
1463 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1464#endif
1465
1466 /* argument too large for an unsigned long? */
1467 if (expect_false (v >= shift))
1468 {
1469 ev_tstamp f;
1470
1471 if (v == v - 1.)
1472 return v; /* very large number */
1473
1474 f = shift * ev_floor (v * (1. / shift));
1475 return f + ev_floor (v - f);
1476 }
1477
1478 /* special treatment for negative args? */
1479 if (expect_false (v < 0.))
1480 {
1481 ev_tstamp f = -ev_floor (-v);
1482
1483 return f - (f == v ? 0 : 1);
1484 }
1485
1486 /* fits into an unsigned long */
1487 return (unsigned long)v;
1488}
1489
1490#endif
1491
1492/*****************************************************************************/
1493
1494#ifdef __linux
1495# include <sys/utsname.h>
1496#endif
1497
1498static unsigned int noinline ecb_cold
1499ev_linux_version (void)
1500{
1501#ifdef __linux
1502 unsigned int v = 0;
1503 struct utsname buf;
1504 int i;
1505 char *p = buf.release;
1506
1507 if (uname (&buf))
1508 return 0;
1509
1510 for (i = 3+1; --i; )
1511 {
1512 unsigned int c = 0;
1513
1514 for (;;)
1515 {
1516 if (*p >= '0' && *p <= '9')
1517 c = c * 10 + *p++ - '0';
1518 else
1519 {
1520 p += *p == '.';
1521 break;
1522 }
1523 }
1524
1525 v = (v << 8) | c;
1526 }
1527
1528 return v;
1529#else
1530 return 0;
1531#endif
1532}
1533
1534/*****************************************************************************/
1535
1536#if EV_AVOID_STDIO
1537static void noinline ecb_cold
1538ev_printerr (const char *msg)
1539{
1540 write (STDERR_FILENO, msg, strlen (msg));
1541}
1542#endif
1543
487static void (*syserr_cb)(const char *msg); 1544static void (*syserr_cb)(const char *msg) EV_THROW;
488 1545
489void 1546void ecb_cold
490ev_set_syserr_cb (void (*cb)(const char *msg)) 1547ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
491{ 1548{
492 syserr_cb = cb; 1549 syserr_cb = cb;
493} 1550}
494 1551
495static void noinline 1552static void noinline ecb_cold
496ev_syserr (const char *msg) 1553ev_syserr (const char *msg)
497{ 1554{
498 if (!msg) 1555 if (!msg)
499 msg = "(libev) system error"; 1556 msg = "(libev) system error";
500 1557
501 if (syserr_cb) 1558 if (syserr_cb)
502 syserr_cb (msg); 1559 syserr_cb (msg);
503 else 1560 else
504 { 1561 {
1562#if EV_AVOID_STDIO
1563 ev_printerr (msg);
1564 ev_printerr (": ");
1565 ev_printerr (strerror (errno));
1566 ev_printerr ("\n");
1567#else
505 perror (msg); 1568 perror (msg);
1569#endif
506 abort (); 1570 abort ();
507 } 1571 }
508} 1572}
509 1573
510static void * 1574static void *
511ev_realloc_emul (void *ptr, long size) 1575ev_realloc_emul (void *ptr, long size) EV_THROW
512{ 1576{
513 /* some systems, notably openbsd and darwin, fail to properly 1577 /* some systems, notably openbsd and darwin, fail to properly
514 * implement realloc (x, 0) (as required by both ansi c-98 and 1578 * implement realloc (x, 0) (as required by both ansi c-89 and
515 * the single unix specification, so work around them here. 1579 * the single unix specification, so work around them here.
1580 * recently, also (at least) fedora and debian started breaking it,
1581 * despite documenting it otherwise.
516 */ 1582 */
517 1583
518 if (size) 1584 if (size)
519 return realloc (ptr, size); 1585 return realloc (ptr, size);
520 1586
521 free (ptr); 1587 free (ptr);
522 return 0; 1588 return 0;
523} 1589}
524 1590
525static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1591static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
526 1592
527void 1593void ecb_cold
528ev_set_allocator (void *(*cb)(void *ptr, long size)) 1594ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
529{ 1595{
530 alloc = cb; 1596 alloc = cb;
531} 1597}
532 1598
533inline_speed void * 1599inline_speed void *
… …
535{ 1601{
536 ptr = alloc (ptr, size); 1602 ptr = alloc (ptr, size);
537 1603
538 if (!ptr && size) 1604 if (!ptr && size)
539 { 1605 {
1606#if EV_AVOID_STDIO
1607 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1608#else
540 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1609 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1610#endif
541 abort (); 1611 abort ();
542 } 1612 }
543 1613
544 return ptr; 1614 return ptr;
545} 1615}
… …
561 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1631 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
562 unsigned char unused; 1632 unsigned char unused;
563#if EV_USE_EPOLL 1633#if EV_USE_EPOLL
564 unsigned int egen; /* generation counter to counter epoll bugs */ 1634 unsigned int egen; /* generation counter to counter epoll bugs */
565#endif 1635#endif
566#if EV_SELECT_IS_WINSOCKET 1636#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
567 SOCKET handle; 1637 SOCKET handle;
1638#endif
1639#if EV_USE_IOCP
1640 OVERLAPPED or, ow;
568#endif 1641#endif
569} ANFD; 1642} ANFD;
570 1643
571/* stores the pending event set for a given watcher */ 1644/* stores the pending event set for a given watcher */
572typedef struct 1645typedef struct
… …
614 #undef VAR 1687 #undef VAR
615 }; 1688 };
616 #include "ev_wrap.h" 1689 #include "ev_wrap.h"
617 1690
618 static struct ev_loop default_loop_struct; 1691 static struct ev_loop default_loop_struct;
619 struct ev_loop *ev_default_loop_ptr; 1692 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
620 1693
621#else 1694#else
622 1695
623 ev_tstamp ev_rt_now; 1696 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
624 #define VAR(name,decl) static decl; 1697 #define VAR(name,decl) static decl;
625 #include "ev_vars.h" 1698 #include "ev_vars.h"
626 #undef VAR 1699 #undef VAR
627 1700
628 static int ev_default_loop_ptr; 1701 static int ev_default_loop_ptr;
629 1702
630#endif 1703#endif
631 1704
632#if EV_MINIMAL < 2 1705#if EV_FEATURE_API
633# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1706# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
634# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1707# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
635# define EV_INVOKE_PENDING invoke_cb (EV_A) 1708# define EV_INVOKE_PENDING invoke_cb (EV_A)
636#else 1709#else
637# define EV_RELEASE_CB (void)0 1710# define EV_RELEASE_CB (void)0
638# define EV_ACQUIRE_CB (void)0 1711# define EV_ACQUIRE_CB (void)0
639# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1712# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
640#endif 1713#endif
641 1714
642#define EVUNLOOP_RECURSE 0x80 1715#define EVBREAK_RECURSE 0x80
643 1716
644/*****************************************************************************/ 1717/*****************************************************************************/
645 1718
646#ifndef EV_HAVE_EV_TIME 1719#ifndef EV_HAVE_EV_TIME
647ev_tstamp 1720ev_tstamp
648ev_time (void) 1721ev_time (void) EV_THROW
649{ 1722{
650#if EV_USE_REALTIME 1723#if EV_USE_REALTIME
651 if (expect_true (have_realtime)) 1724 if (expect_true (have_realtime))
652 { 1725 {
653 struct timespec ts; 1726 struct timespec ts;
… …
677 return ev_time (); 1750 return ev_time ();
678} 1751}
679 1752
680#if EV_MULTIPLICITY 1753#if EV_MULTIPLICITY
681ev_tstamp 1754ev_tstamp
682ev_now (EV_P) 1755ev_now (EV_P) EV_THROW
683{ 1756{
684 return ev_rt_now; 1757 return ev_rt_now;
685} 1758}
686#endif 1759#endif
687 1760
688void 1761void
689ev_sleep (ev_tstamp delay) 1762ev_sleep (ev_tstamp delay) EV_THROW
690{ 1763{
691 if (delay > 0.) 1764 if (delay > 0.)
692 { 1765 {
693#if EV_USE_NANOSLEEP 1766#if EV_USE_NANOSLEEP
694 struct timespec ts; 1767 struct timespec ts;
695 1768
696 ts.tv_sec = (time_t)delay; 1769 EV_TS_SET (ts, delay);
697 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
698
699 nanosleep (&ts, 0); 1770 nanosleep (&ts, 0);
700#elif defined(_WIN32) 1771#elif defined _WIN32
701 Sleep ((unsigned long)(delay * 1e3)); 1772 Sleep ((unsigned long)(delay * 1e3));
702#else 1773#else
703 struct timeval tv; 1774 struct timeval tv;
704 1775
705 tv.tv_sec = (time_t)delay;
706 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
707
708 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1776 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
709 /* something not guaranteed by newer posix versions, but guaranteed */ 1777 /* something not guaranteed by newer posix versions, but guaranteed */
710 /* by older ones */ 1778 /* by older ones */
1779 EV_TV_SET (tv, delay);
711 select (0, 0, 0, 0, &tv); 1780 select (0, 0, 0, 0, &tv);
712#endif 1781#endif
713 } 1782 }
714} 1783}
715 1784
716/*****************************************************************************/ 1785/*****************************************************************************/
717 1786
718#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1787#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
719 1788
720/* find a suitable new size for the given array, */ 1789/* find a suitable new size for the given array, */
721/* hopefully by rounding to a ncie-to-malloc size */ 1790/* hopefully by rounding to a nice-to-malloc size */
722inline_size int 1791inline_size int
723array_nextsize (int elem, int cur, int cnt) 1792array_nextsize (int elem, int cur, int cnt)
724{ 1793{
725 int ncur = cur + 1; 1794 int ncur = cur + 1;
726 1795
727 do 1796 do
728 ncur <<= 1; 1797 ncur <<= 1;
729 while (cnt > ncur); 1798 while (cnt > ncur);
730 1799
731 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1800 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
732 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1801 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
733 { 1802 {
734 ncur *= elem; 1803 ncur *= elem;
735 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1804 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
736 ncur = ncur - sizeof (void *) * 4; 1805 ncur = ncur - sizeof (void *) * 4;
… …
738 } 1807 }
739 1808
740 return ncur; 1809 return ncur;
741} 1810}
742 1811
743static noinline void * 1812static void * noinline ecb_cold
744array_realloc (int elem, void *base, int *cur, int cnt) 1813array_realloc (int elem, void *base, int *cur, int cnt)
745{ 1814{
746 *cur = array_nextsize (elem, *cur, cnt); 1815 *cur = array_nextsize (elem, *cur, cnt);
747 return ev_realloc (base, elem * *cur); 1816 return ev_realloc (base, elem * *cur);
748} 1817}
… …
751 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1820 memset ((void *)(base), 0, sizeof (*(base)) * (count))
752 1821
753#define array_needsize(type,base,cur,cnt,init) \ 1822#define array_needsize(type,base,cur,cnt,init) \
754 if (expect_false ((cnt) > (cur))) \ 1823 if (expect_false ((cnt) > (cur))) \
755 { \ 1824 { \
756 int ocur_ = (cur); \ 1825 int ecb_unused ocur_ = (cur); \
757 (base) = (type *)array_realloc \ 1826 (base) = (type *)array_realloc \
758 (sizeof (type), (base), &(cur), (cnt)); \ 1827 (sizeof (type), (base), &(cur), (cnt)); \
759 init ((base) + (ocur_), (cur) - ocur_); \ 1828 init ((base) + (ocur_), (cur) - ocur_); \
760 } 1829 }
761 1830
… …
779pendingcb (EV_P_ ev_prepare *w, int revents) 1848pendingcb (EV_P_ ev_prepare *w, int revents)
780{ 1849{
781} 1850}
782 1851
783void noinline 1852void noinline
784ev_feed_event (EV_P_ void *w, int revents) 1853ev_feed_event (EV_P_ void *w, int revents) EV_THROW
785{ 1854{
786 W w_ = (W)w; 1855 W w_ = (W)w;
787 int pri = ABSPRI (w_); 1856 int pri = ABSPRI (w_);
788 1857
789 if (expect_false (w_->pending)) 1858 if (expect_false (w_->pending))
… …
793 w_->pending = ++pendingcnt [pri]; 1862 w_->pending = ++pendingcnt [pri];
794 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1863 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
795 pendings [pri][w_->pending - 1].w = w_; 1864 pendings [pri][w_->pending - 1].w = w_;
796 pendings [pri][w_->pending - 1].events = revents; 1865 pendings [pri][w_->pending - 1].events = revents;
797 } 1866 }
1867
1868 pendingpri = NUMPRI - 1;
798} 1869}
799 1870
800inline_speed void 1871inline_speed void
801feed_reverse (EV_P_ W w) 1872feed_reverse (EV_P_ W w)
802{ 1873{
… …
822} 1893}
823 1894
824/*****************************************************************************/ 1895/*****************************************************************************/
825 1896
826inline_speed void 1897inline_speed void
827fd_event_nc (EV_P_ int fd, int revents) 1898fd_event_nocheck (EV_P_ int fd, int revents)
828{ 1899{
829 ANFD *anfd = anfds + fd; 1900 ANFD *anfd = anfds + fd;
830 ev_io *w; 1901 ev_io *w;
831 1902
832 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1903 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
844fd_event (EV_P_ int fd, int revents) 1915fd_event (EV_P_ int fd, int revents)
845{ 1916{
846 ANFD *anfd = anfds + fd; 1917 ANFD *anfd = anfds + fd;
847 1918
848 if (expect_true (!anfd->reify)) 1919 if (expect_true (!anfd->reify))
849 fd_event_nc (EV_A_ fd, revents); 1920 fd_event_nocheck (EV_A_ fd, revents);
850} 1921}
851 1922
852void 1923void
853ev_feed_fd_event (EV_P_ int fd, int revents) 1924ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
854{ 1925{
855 if (fd >= 0 && fd < anfdmax) 1926 if (fd >= 0 && fd < anfdmax)
856 fd_event_nc (EV_A_ fd, revents); 1927 fd_event_nocheck (EV_A_ fd, revents);
857} 1928}
858 1929
859/* make sure the external fd watch events are in-sync */ 1930/* make sure the external fd watch events are in-sync */
860/* with the kernel/libev internal state */ 1931/* with the kernel/libev internal state */
861inline_size void 1932inline_size void
862fd_reify (EV_P) 1933fd_reify (EV_P)
863{ 1934{
864 int i; 1935 int i;
865 1936
1937#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1938 for (i = 0; i < fdchangecnt; ++i)
1939 {
1940 int fd = fdchanges [i];
1941 ANFD *anfd = anfds + fd;
1942
1943 if (anfd->reify & EV__IOFDSET && anfd->head)
1944 {
1945 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1946
1947 if (handle != anfd->handle)
1948 {
1949 unsigned long arg;
1950
1951 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1952
1953 /* handle changed, but fd didn't - we need to do it in two steps */
1954 backend_modify (EV_A_ fd, anfd->events, 0);
1955 anfd->events = 0;
1956 anfd->handle = handle;
1957 }
1958 }
1959 }
1960#endif
1961
866 for (i = 0; i < fdchangecnt; ++i) 1962 for (i = 0; i < fdchangecnt; ++i)
867 { 1963 {
868 int fd = fdchanges [i]; 1964 int fd = fdchanges [i];
869 ANFD *anfd = anfds + fd; 1965 ANFD *anfd = anfds + fd;
870 ev_io *w; 1966 ev_io *w;
871 1967
872 unsigned char events = 0; 1968 unsigned char o_events = anfd->events;
1969 unsigned char o_reify = anfd->reify;
873 1970
874 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1971 anfd->reify = 0;
875 events |= (unsigned char)w->events;
876 1972
877#if EV_SELECT_IS_WINSOCKET 1973 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
878 if (events)
879 { 1974 {
880 unsigned long arg; 1975 anfd->events = 0;
881 #ifdef EV_FD_TO_WIN32_HANDLE 1976
882 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1977 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
883 #else 1978 anfd->events |= (unsigned char)w->events;
884 anfd->handle = _get_osfhandle (fd); 1979
885 #endif 1980 if (o_events != anfd->events)
886 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1981 o_reify = EV__IOFDSET; /* actually |= */
887 } 1982 }
888#endif
889 1983
890 { 1984 if (o_reify & EV__IOFDSET)
891 unsigned char o_events = anfd->events;
892 unsigned char o_reify = anfd->reify;
893
894 anfd->reify = 0;
895 anfd->events = events;
896
897 if (o_events != events || o_reify & EV__IOFDSET)
898 backend_modify (EV_A_ fd, o_events, events); 1985 backend_modify (EV_A_ fd, o_events, anfd->events);
899 }
900 } 1986 }
901 1987
902 fdchangecnt = 0; 1988 fdchangecnt = 0;
903} 1989}
904 1990
… …
916 fdchanges [fdchangecnt - 1] = fd; 2002 fdchanges [fdchangecnt - 1] = fd;
917 } 2003 }
918} 2004}
919 2005
920/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2006/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
921inline_speed void 2007inline_speed void ecb_cold
922fd_kill (EV_P_ int fd) 2008fd_kill (EV_P_ int fd)
923{ 2009{
924 ev_io *w; 2010 ev_io *w;
925 2011
926 while ((w = (ev_io *)anfds [fd].head)) 2012 while ((w = (ev_io *)anfds [fd].head))
… …
928 ev_io_stop (EV_A_ w); 2014 ev_io_stop (EV_A_ w);
929 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2015 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
930 } 2016 }
931} 2017}
932 2018
933/* check whether the given fd is atcually valid, for error recovery */ 2019/* check whether the given fd is actually valid, for error recovery */
934inline_size int 2020inline_size int ecb_cold
935fd_valid (int fd) 2021fd_valid (int fd)
936{ 2022{
937#ifdef _WIN32 2023#ifdef _WIN32
938 return _get_osfhandle (fd) != -1; 2024 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
939#else 2025#else
940 return fcntl (fd, F_GETFD) != -1; 2026 return fcntl (fd, F_GETFD) != -1;
941#endif 2027#endif
942} 2028}
943 2029
944/* called on EBADF to verify fds */ 2030/* called on EBADF to verify fds */
945static void noinline 2031static void noinline ecb_cold
946fd_ebadf (EV_P) 2032fd_ebadf (EV_P)
947{ 2033{
948 int fd; 2034 int fd;
949 2035
950 for (fd = 0; fd < anfdmax; ++fd) 2036 for (fd = 0; fd < anfdmax; ++fd)
… …
952 if (!fd_valid (fd) && errno == EBADF) 2038 if (!fd_valid (fd) && errno == EBADF)
953 fd_kill (EV_A_ fd); 2039 fd_kill (EV_A_ fd);
954} 2040}
955 2041
956/* called on ENOMEM in select/poll to kill some fds and retry */ 2042/* called on ENOMEM in select/poll to kill some fds and retry */
957static void noinline 2043static void noinline ecb_cold
958fd_enomem (EV_P) 2044fd_enomem (EV_P)
959{ 2045{
960 int fd; 2046 int fd;
961 2047
962 for (fd = anfdmax; fd--; ) 2048 for (fd = anfdmax; fd--; )
… …
980 anfds [fd].emask = 0; 2066 anfds [fd].emask = 0;
981 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 2067 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
982 } 2068 }
983} 2069}
984 2070
2071/* used to prepare libev internal fd's */
2072/* this is not fork-safe */
2073inline_speed void
2074fd_intern (int fd)
2075{
2076#ifdef _WIN32
2077 unsigned long arg = 1;
2078 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2079#else
2080 fcntl (fd, F_SETFD, FD_CLOEXEC);
2081 fcntl (fd, F_SETFL, O_NONBLOCK);
2082#endif
2083}
2084
985/*****************************************************************************/ 2085/*****************************************************************************/
986 2086
987/* 2087/*
988 * the heap functions want a real array index. array index 0 uis guaranteed to not 2088 * the heap functions want a real array index. array index 0 is guaranteed to not
989 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2089 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
990 * the branching factor of the d-tree. 2090 * the branching factor of the d-tree.
991 */ 2091 */
992 2092
993/* 2093/*
… …
1141 2241
1142static ANSIG signals [EV_NSIG - 1]; 2242static ANSIG signals [EV_NSIG - 1];
1143 2243
1144/*****************************************************************************/ 2244/*****************************************************************************/
1145 2245
1146/* used to prepare libev internal fd's */ 2246#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1147/* this is not fork-safe */ 2247
2248static void noinline ecb_cold
2249evpipe_init (EV_P)
2250{
2251 if (!ev_is_active (&pipe_w))
2252 {
2253 int fds [2];
2254
2255# if EV_USE_EVENTFD
2256 fds [0] = -1;
2257 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2258 if (fds [1] < 0 && errno == EINVAL)
2259 fds [1] = eventfd (0, 0);
2260
2261 if (fds [1] < 0)
2262# endif
2263 {
2264 while (pipe (fds))
2265 ev_syserr ("(libev) error creating signal/async pipe");
2266
2267 fd_intern (fds [0]);
2268 }
2269
2270 evpipe [0] = fds [0];
2271
2272 if (evpipe [1] < 0)
2273 evpipe [1] = fds [1]; /* first call, set write fd */
2274 else
2275 {
2276 /* on subsequent calls, do not change evpipe [1] */
2277 /* so that evpipe_write can always rely on its value. */
2278 /* this branch does not do anything sensible on windows, */
2279 /* so must not be executed on windows */
2280
2281 dup2 (fds [1], evpipe [1]);
2282 close (fds [1]);
2283 }
2284
2285 fd_intern (evpipe [1]);
2286
2287 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2288 ev_io_start (EV_A_ &pipe_w);
2289 ev_unref (EV_A); /* watcher should not keep loop alive */
2290 }
2291}
2292
1148inline_speed void 2293inline_speed void
1149fd_intern (int fd) 2294evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1150{ 2295{
1151#ifdef _WIN32 2296 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1152 unsigned long arg = 1;
1153 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1154#else
1155 fcntl (fd, F_SETFD, FD_CLOEXEC);
1156 fcntl (fd, F_SETFL, O_NONBLOCK);
1157#endif
1158}
1159 2297
1160static void noinline 2298 if (expect_true (*flag))
1161evpipe_init (EV_P) 2299 return;
1162{ 2300
1163 if (!ev_is_active (&pipe_w)) 2301 *flag = 1;
2302 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2303
2304 pipe_write_skipped = 1;
2305
2306 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2307
2308 if (pipe_write_wanted)
1164 { 2309 {
2310 int old_errno;
2311
2312 pipe_write_skipped = 0;
2313 ECB_MEMORY_FENCE_RELEASE;
2314
2315 old_errno = errno; /* save errno because write will clobber it */
2316
1165#if EV_USE_EVENTFD 2317#if EV_USE_EVENTFD
1166 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2318 if (evpipe [0] < 0)
1167 if (evfd < 0 && errno == EINVAL)
1168 evfd = eventfd (0, 0);
1169
1170 if (evfd >= 0)
1171 { 2319 {
1172 evpipe [0] = -1; 2320 uint64_t counter = 1;
1173 fd_intern (evfd); /* doing it twice doesn't hurt */ 2321 write (evpipe [1], &counter, sizeof (uint64_t));
1174 ev_io_set (&pipe_w, evfd, EV_READ);
1175 } 2322 }
1176 else 2323 else
1177#endif 2324#endif
1178 { 2325 {
1179 while (pipe (evpipe)) 2326#ifdef _WIN32
1180 ev_syserr ("(libev) error creating signal/async pipe"); 2327 WSABUF buf;
1181 2328 DWORD sent;
1182 fd_intern (evpipe [0]); 2329 buf.buf = &buf;
1183 fd_intern (evpipe [1]); 2330 buf.len = 1;
1184 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2331 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2332#else
2333 write (evpipe [1], &(evpipe [1]), 1);
2334#endif
1185 } 2335 }
1186
1187 ev_io_start (EV_A_ &pipe_w);
1188 ev_unref (EV_A); /* watcher should not keep loop alive */
1189 }
1190}
1191
1192inline_size void
1193evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1194{
1195 if (!*flag)
1196 {
1197 int old_errno = errno; /* save errno because write might clobber it */
1198
1199 *flag = 1;
1200
1201#if EV_USE_EVENTFD
1202 if (evfd >= 0)
1203 {
1204 uint64_t counter = 1;
1205 write (evfd, &counter, sizeof (uint64_t));
1206 }
1207 else
1208#endif
1209 write (evpipe [1], &old_errno, 1);
1210 2336
1211 errno = old_errno; 2337 errno = old_errno;
1212 } 2338 }
1213} 2339}
1214 2340
… …
1217static void 2343static void
1218pipecb (EV_P_ ev_io *iow, int revents) 2344pipecb (EV_P_ ev_io *iow, int revents)
1219{ 2345{
1220 int i; 2346 int i;
1221 2347
2348 if (revents & EV_READ)
2349 {
1222#if EV_USE_EVENTFD 2350#if EV_USE_EVENTFD
1223 if (evfd >= 0) 2351 if (evpipe [0] < 0)
1224 { 2352 {
1225 uint64_t counter; 2353 uint64_t counter;
1226 read (evfd, &counter, sizeof (uint64_t)); 2354 read (evpipe [1], &counter, sizeof (uint64_t));
1227 } 2355 }
1228 else 2356 else
1229#endif 2357#endif
1230 { 2358 {
1231 char dummy; 2359 char dummy[4];
2360#ifdef _WIN32
2361 WSABUF buf;
2362 DWORD recvd;
2363 DWORD flags = 0;
2364 buf.buf = dummy;
2365 buf.len = sizeof (dummy);
2366 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2367#else
1232 read (evpipe [0], &dummy, 1); 2368 read (evpipe [0], &dummy, sizeof (dummy));
2369#endif
2370 }
1233 } 2371 }
1234 2372
2373 pipe_write_skipped = 0;
2374
2375 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2376
2377#if EV_SIGNAL_ENABLE
1235 if (sig_pending) 2378 if (sig_pending)
1236 { 2379 {
1237 sig_pending = 0; 2380 sig_pending = 0;
2381
2382 ECB_MEMORY_FENCE;
1238 2383
1239 for (i = EV_NSIG - 1; i--; ) 2384 for (i = EV_NSIG - 1; i--; )
1240 if (expect_false (signals [i].pending)) 2385 if (expect_false (signals [i].pending))
1241 ev_feed_signal_event (EV_A_ i + 1); 2386 ev_feed_signal_event (EV_A_ i + 1);
1242 } 2387 }
2388#endif
1243 2389
1244#if EV_ASYNC_ENABLE 2390#if EV_ASYNC_ENABLE
1245 if (async_pending) 2391 if (async_pending)
1246 { 2392 {
1247 async_pending = 0; 2393 async_pending = 0;
2394
2395 ECB_MEMORY_FENCE;
1248 2396
1249 for (i = asynccnt; i--; ) 2397 for (i = asynccnt; i--; )
1250 if (asyncs [i]->sent) 2398 if (asyncs [i]->sent)
1251 { 2399 {
1252 asyncs [i]->sent = 0; 2400 asyncs [i]->sent = 0;
2401 ECB_MEMORY_FENCE_RELEASE;
1253 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2402 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1254 } 2403 }
1255 } 2404 }
1256#endif 2405#endif
1257} 2406}
1258 2407
1259/*****************************************************************************/ 2408/*****************************************************************************/
1260 2409
2410void
2411ev_feed_signal (int signum) EV_THROW
2412{
2413#if EV_MULTIPLICITY
2414 EV_P;
2415 ECB_MEMORY_FENCE_ACQUIRE;
2416 EV_A = signals [signum - 1].loop;
2417
2418 if (!EV_A)
2419 return;
2420#endif
2421
2422 signals [signum - 1].pending = 1;
2423 evpipe_write (EV_A_ &sig_pending);
2424}
2425
1261static void 2426static void
1262ev_sighandler (int signum) 2427ev_sighandler (int signum)
1263{ 2428{
1264#if EV_MULTIPLICITY
1265 EV_P = signals [signum - 1].loop;
1266#endif
1267
1268#if _WIN32 2429#ifdef _WIN32
1269 signal (signum, ev_sighandler); 2430 signal (signum, ev_sighandler);
1270#endif 2431#endif
1271 2432
1272 signals [signum - 1].pending = 1; 2433 ev_feed_signal (signum);
1273 evpipe_write (EV_A_ &sig_pending);
1274} 2434}
1275 2435
1276void noinline 2436void noinline
1277ev_feed_signal_event (EV_P_ int signum) 2437ev_feed_signal_event (EV_P_ int signum) EV_THROW
1278{ 2438{
1279 WL w; 2439 WL w;
1280 2440
1281 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2441 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1282 return; 2442 return;
1283 2443
1284 --signum; 2444 --signum;
1285 2445
1286#if EV_MULTIPLICITY 2446#if EV_MULTIPLICITY
… …
1290 if (expect_false (signals [signum].loop != EV_A)) 2450 if (expect_false (signals [signum].loop != EV_A))
1291 return; 2451 return;
1292#endif 2452#endif
1293 2453
1294 signals [signum].pending = 0; 2454 signals [signum].pending = 0;
2455 ECB_MEMORY_FENCE_RELEASE;
1295 2456
1296 for (w = signals [signum].head; w; w = w->next) 2457 for (w = signals [signum].head; w; w = w->next)
1297 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2458 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1298} 2459}
1299 2460
… …
1315 break; 2476 break;
1316 } 2477 }
1317} 2478}
1318#endif 2479#endif
1319 2480
2481#endif
2482
1320/*****************************************************************************/ 2483/*****************************************************************************/
1321 2484
2485#if EV_CHILD_ENABLE
1322static WL childs [EV_PID_HASHSIZE]; 2486static WL childs [EV_PID_HASHSIZE];
1323
1324#ifndef _WIN32
1325 2487
1326static ev_signal childev; 2488static ev_signal childev;
1327 2489
1328#ifndef WIFCONTINUED 2490#ifndef WIFCONTINUED
1329# define WIFCONTINUED(status) 0 2491# define WIFCONTINUED(status) 0
… …
1334child_reap (EV_P_ int chain, int pid, int status) 2496child_reap (EV_P_ int chain, int pid, int status)
1335{ 2497{
1336 ev_child *w; 2498 ev_child *w;
1337 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2499 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1338 2500
1339 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2501 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1340 { 2502 {
1341 if ((w->pid == pid || !w->pid) 2503 if ((w->pid == pid || !w->pid)
1342 && (!traced || (w->flags & 1))) 2504 && (!traced || (w->flags & 1)))
1343 { 2505 {
1344 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2506 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1369 /* make sure we are called again until all children have been reaped */ 2531 /* make sure we are called again until all children have been reaped */
1370 /* we need to do it this way so that the callback gets called before we continue */ 2532 /* we need to do it this way so that the callback gets called before we continue */
1371 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2533 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1372 2534
1373 child_reap (EV_A_ pid, pid, status); 2535 child_reap (EV_A_ pid, pid, status);
1374 if (EV_PID_HASHSIZE > 1) 2536 if ((EV_PID_HASHSIZE) > 1)
1375 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2537 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1376} 2538}
1377 2539
1378#endif 2540#endif
1379 2541
1380/*****************************************************************************/ 2542/*****************************************************************************/
1381 2543
2544#if EV_USE_IOCP
2545# include "ev_iocp.c"
2546#endif
1382#if EV_USE_PORT 2547#if EV_USE_PORT
1383# include "ev_port.c" 2548# include "ev_port.c"
1384#endif 2549#endif
1385#if EV_USE_KQUEUE 2550#if EV_USE_KQUEUE
1386# include "ev_kqueue.c" 2551# include "ev_kqueue.c"
… …
1393#endif 2558#endif
1394#if EV_USE_SELECT 2559#if EV_USE_SELECT
1395# include "ev_select.c" 2560# include "ev_select.c"
1396#endif 2561#endif
1397 2562
1398int 2563int ecb_cold
1399ev_version_major (void) 2564ev_version_major (void) EV_THROW
1400{ 2565{
1401 return EV_VERSION_MAJOR; 2566 return EV_VERSION_MAJOR;
1402} 2567}
1403 2568
1404int 2569int ecb_cold
1405ev_version_minor (void) 2570ev_version_minor (void) EV_THROW
1406{ 2571{
1407 return EV_VERSION_MINOR; 2572 return EV_VERSION_MINOR;
1408} 2573}
1409 2574
1410/* return true if we are running with elevated privileges and should ignore env variables */ 2575/* return true if we are running with elevated privileges and should ignore env variables */
1411int inline_size 2576int inline_size ecb_cold
1412enable_secure (void) 2577enable_secure (void)
1413{ 2578{
1414#ifdef _WIN32 2579#ifdef _WIN32
1415 return 0; 2580 return 0;
1416#else 2581#else
1417 return getuid () != geteuid () 2582 return getuid () != geteuid ()
1418 || getgid () != getegid (); 2583 || getgid () != getegid ();
1419#endif 2584#endif
1420} 2585}
1421 2586
1422unsigned int 2587unsigned int ecb_cold
1423ev_supported_backends (void) 2588ev_supported_backends (void) EV_THROW
1424{ 2589{
1425 unsigned int flags = 0; 2590 unsigned int flags = 0;
1426 2591
1427 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2592 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1428 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2593 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1431 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2596 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1432 2597
1433 return flags; 2598 return flags;
1434} 2599}
1435 2600
1436unsigned int 2601unsigned int ecb_cold
1437ev_recommended_backends (void) 2602ev_recommended_backends (void) EV_THROW
1438{ 2603{
1439 unsigned int flags = ev_supported_backends (); 2604 unsigned int flags = ev_supported_backends ();
1440 2605
1441#ifndef __NetBSD__ 2606#ifndef __NetBSD__
1442 /* kqueue is borked on everything but netbsd apparently */ 2607 /* kqueue is borked on everything but netbsd apparently */
… …
1446#ifdef __APPLE__ 2611#ifdef __APPLE__
1447 /* only select works correctly on that "unix-certified" platform */ 2612 /* only select works correctly on that "unix-certified" platform */
1448 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2613 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1449 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2614 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1450#endif 2615#endif
2616#ifdef __FreeBSD__
2617 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2618#endif
1451 2619
1452 return flags; 2620 return flags;
1453} 2621}
1454 2622
2623unsigned int ecb_cold
2624ev_embeddable_backends (void) EV_THROW
2625{
2626 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2627
2628 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2629 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2630 flags &= ~EVBACKEND_EPOLL;
2631
2632 return flags;
2633}
2634
1455unsigned int 2635unsigned int
1456ev_embeddable_backends (void) 2636ev_backend (EV_P) EV_THROW
1457{ 2637{
1458 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2638 return backend;
1459
1460 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1461 /* please fix it and tell me how to detect the fix */
1462 flags &= ~EVBACKEND_EPOLL;
1463
1464 return flags;
1465} 2639}
1466 2640
2641#if EV_FEATURE_API
1467unsigned int 2642unsigned int
1468ev_backend (EV_P) 2643ev_iteration (EV_P) EV_THROW
1469{ 2644{
1470 return backend; 2645 return loop_count;
1471} 2646}
1472 2647
1473#if EV_MINIMAL < 2
1474unsigned int 2648unsigned int
1475ev_loop_count (EV_P) 2649ev_depth (EV_P) EV_THROW
1476{
1477 return loop_count;
1478}
1479
1480unsigned int
1481ev_loop_depth (EV_P)
1482{ 2650{
1483 return loop_depth; 2651 return loop_depth;
1484} 2652}
1485 2653
1486void 2654void
1487ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2655ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1488{ 2656{
1489 io_blocktime = interval; 2657 io_blocktime = interval;
1490} 2658}
1491 2659
1492void 2660void
1493ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2661ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1494{ 2662{
1495 timeout_blocktime = interval; 2663 timeout_blocktime = interval;
1496} 2664}
1497 2665
1498void 2666void
1499ev_set_userdata (EV_P_ void *data) 2667ev_set_userdata (EV_P_ void *data) EV_THROW
1500{ 2668{
1501 userdata = data; 2669 userdata = data;
1502} 2670}
1503 2671
1504void * 2672void *
1505ev_userdata (EV_P) 2673ev_userdata (EV_P) EV_THROW
1506{ 2674{
1507 return userdata; 2675 return userdata;
1508} 2676}
1509 2677
2678void
1510void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2679ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1511{ 2680{
1512 invoke_cb = invoke_pending_cb; 2681 invoke_cb = invoke_pending_cb;
1513} 2682}
1514 2683
2684void
1515void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2685ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1516{ 2686{
1517 release_cb = release; 2687 release_cb = release;
1518 acquire_cb = acquire; 2688 acquire_cb = acquire;
1519} 2689}
1520#endif 2690#endif
1521 2691
1522/* initialise a loop structure, must be zero-initialised */ 2692/* initialise a loop structure, must be zero-initialised */
1523static void noinline 2693static void noinline ecb_cold
1524loop_init (EV_P_ unsigned int flags) 2694loop_init (EV_P_ unsigned int flags) EV_THROW
1525{ 2695{
1526 if (!backend) 2696 if (!backend)
1527 { 2697 {
2698 origflags = flags;
2699
1528#if EV_USE_REALTIME 2700#if EV_USE_REALTIME
1529 if (!have_realtime) 2701 if (!have_realtime)
1530 { 2702 {
1531 struct timespec ts; 2703 struct timespec ts;
1532 2704
… …
1554 if (!(flags & EVFLAG_NOENV) 2726 if (!(flags & EVFLAG_NOENV)
1555 && !enable_secure () 2727 && !enable_secure ()
1556 && getenv ("LIBEV_FLAGS")) 2728 && getenv ("LIBEV_FLAGS"))
1557 flags = atoi (getenv ("LIBEV_FLAGS")); 2729 flags = atoi (getenv ("LIBEV_FLAGS"));
1558 2730
1559 ev_rt_now = ev_time (); 2731 ev_rt_now = ev_time ();
1560 mn_now = get_clock (); 2732 mn_now = get_clock ();
1561 now_floor = mn_now; 2733 now_floor = mn_now;
1562 rtmn_diff = ev_rt_now - mn_now; 2734 rtmn_diff = ev_rt_now - mn_now;
1563#if EV_MINIMAL < 2 2735#if EV_FEATURE_API
1564 invoke_cb = ev_invoke_pending; 2736 invoke_cb = ev_invoke_pending;
1565#endif 2737#endif
1566 2738
1567 io_blocktime = 0.; 2739 io_blocktime = 0.;
1568 timeout_blocktime = 0.; 2740 timeout_blocktime = 0.;
1569 backend = 0; 2741 backend = 0;
1570 backend_fd = -1; 2742 backend_fd = -1;
1571 sig_pending = 0; 2743 sig_pending = 0;
1572#if EV_ASYNC_ENABLE 2744#if EV_ASYNC_ENABLE
1573 async_pending = 0; 2745 async_pending = 0;
1574#endif 2746#endif
2747 pipe_write_skipped = 0;
2748 pipe_write_wanted = 0;
2749 evpipe [0] = -1;
2750 evpipe [1] = -1;
1575#if EV_USE_INOTIFY 2751#if EV_USE_INOTIFY
1576 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2752 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1577#endif 2753#endif
1578#if EV_USE_SIGNALFD 2754#if EV_USE_SIGNALFD
1579 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2755 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1580#endif 2756#endif
1581 2757
1582 if (!(flags & 0x0000ffffU)) 2758 if (!(flags & EVBACKEND_MASK))
1583 flags |= ev_recommended_backends (); 2759 flags |= ev_recommended_backends ();
1584 2760
2761#if EV_USE_IOCP
2762 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2763#endif
1585#if EV_USE_PORT 2764#if EV_USE_PORT
1586 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2765 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1587#endif 2766#endif
1588#if EV_USE_KQUEUE 2767#if EV_USE_KQUEUE
1589 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2768 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1598 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2777 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1599#endif 2778#endif
1600 2779
1601 ev_prepare_init (&pending_w, pendingcb); 2780 ev_prepare_init (&pending_w, pendingcb);
1602 2781
2782#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1603 ev_init (&pipe_w, pipecb); 2783 ev_init (&pipe_w, pipecb);
1604 ev_set_priority (&pipe_w, EV_MAXPRI); 2784 ev_set_priority (&pipe_w, EV_MAXPRI);
2785#endif
1605 } 2786 }
1606} 2787}
1607 2788
1608/* free up a loop structure */ 2789/* free up a loop structure */
1609static void noinline 2790void ecb_cold
1610loop_destroy (EV_P) 2791ev_loop_destroy (EV_P)
1611{ 2792{
1612 int i; 2793 int i;
2794
2795#if EV_MULTIPLICITY
2796 /* mimic free (0) */
2797 if (!EV_A)
2798 return;
2799#endif
2800
2801#if EV_CLEANUP_ENABLE
2802 /* queue cleanup watchers (and execute them) */
2803 if (expect_false (cleanupcnt))
2804 {
2805 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2806 EV_INVOKE_PENDING;
2807 }
2808#endif
2809
2810#if EV_CHILD_ENABLE
2811 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2812 {
2813 ev_ref (EV_A); /* child watcher */
2814 ev_signal_stop (EV_A_ &childev);
2815 }
2816#endif
1613 2817
1614 if (ev_is_active (&pipe_w)) 2818 if (ev_is_active (&pipe_w))
1615 { 2819 {
1616 /*ev_ref (EV_A);*/ 2820 /*ev_ref (EV_A);*/
1617 /*ev_io_stop (EV_A_ &pipe_w);*/ 2821 /*ev_io_stop (EV_A_ &pipe_w);*/
1618 2822
1619#if EV_USE_EVENTFD 2823 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1620 if (evfd >= 0) 2824 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1621 close (evfd);
1622#endif
1623
1624 if (evpipe [0] >= 0)
1625 {
1626 close (evpipe [0]);
1627 close (evpipe [1]);
1628 }
1629 } 2825 }
1630 2826
1631#if EV_USE_SIGNALFD 2827#if EV_USE_SIGNALFD
1632 if (ev_is_active (&sigfd_w)) 2828 if (ev_is_active (&sigfd_w))
1633 {
1634 /*ev_ref (EV_A);*/
1635 /*ev_io_stop (EV_A_ &sigfd_w);*/
1636
1637 close (sigfd); 2829 close (sigfd);
1638 }
1639#endif 2830#endif
1640 2831
1641#if EV_USE_INOTIFY 2832#if EV_USE_INOTIFY
1642 if (fs_fd >= 0) 2833 if (fs_fd >= 0)
1643 close (fs_fd); 2834 close (fs_fd);
1644#endif 2835#endif
1645 2836
1646 if (backend_fd >= 0) 2837 if (backend_fd >= 0)
1647 close (backend_fd); 2838 close (backend_fd);
1648 2839
2840#if EV_USE_IOCP
2841 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2842#endif
1649#if EV_USE_PORT 2843#if EV_USE_PORT
1650 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2844 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1651#endif 2845#endif
1652#if EV_USE_KQUEUE 2846#if EV_USE_KQUEUE
1653 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2847 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1680 array_free (periodic, EMPTY); 2874 array_free (periodic, EMPTY);
1681#endif 2875#endif
1682#if EV_FORK_ENABLE 2876#if EV_FORK_ENABLE
1683 array_free (fork, EMPTY); 2877 array_free (fork, EMPTY);
1684#endif 2878#endif
2879#if EV_CLEANUP_ENABLE
2880 array_free (cleanup, EMPTY);
2881#endif
1685 array_free (prepare, EMPTY); 2882 array_free (prepare, EMPTY);
1686 array_free (check, EMPTY); 2883 array_free (check, EMPTY);
1687#if EV_ASYNC_ENABLE 2884#if EV_ASYNC_ENABLE
1688 array_free (async, EMPTY); 2885 array_free (async, EMPTY);
1689#endif 2886#endif
1690 2887
1691 backend = 0; 2888 backend = 0;
2889
2890#if EV_MULTIPLICITY
2891 if (ev_is_default_loop (EV_A))
2892#endif
2893 ev_default_loop_ptr = 0;
2894#if EV_MULTIPLICITY
2895 else
2896 ev_free (EV_A);
2897#endif
1692} 2898}
1693 2899
1694#if EV_USE_INOTIFY 2900#if EV_USE_INOTIFY
1695inline_size void infy_fork (EV_P); 2901inline_size void infy_fork (EV_P);
1696#endif 2902#endif
… …
1709#endif 2915#endif
1710#if EV_USE_INOTIFY 2916#if EV_USE_INOTIFY
1711 infy_fork (EV_A); 2917 infy_fork (EV_A);
1712#endif 2918#endif
1713 2919
2920#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1714 if (ev_is_active (&pipe_w)) 2921 if (ev_is_active (&pipe_w))
1715 { 2922 {
1716 /* this "locks" the handlers against writing to the pipe */ 2923 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1717 /* while we modify the fd vars */
1718 sig_pending = 1;
1719#if EV_ASYNC_ENABLE
1720 async_pending = 1;
1721#endif
1722 2924
1723 ev_ref (EV_A); 2925 ev_ref (EV_A);
1724 ev_io_stop (EV_A_ &pipe_w); 2926 ev_io_stop (EV_A_ &pipe_w);
1725 2927
1726#if EV_USE_EVENTFD
1727 if (evfd >= 0)
1728 close (evfd);
1729#endif
1730
1731 if (evpipe [0] >= 0) 2928 if (evpipe [0] >= 0)
1732 { 2929 EV_WIN32_CLOSE_FD (evpipe [0]);
1733 close (evpipe [0]);
1734 close (evpipe [1]);
1735 }
1736 2930
1737 evpipe_init (EV_A); 2931 evpipe_init (EV_A);
1738 /* now iterate over everything, in case we missed something */ 2932 /* iterate over everything, in case we missed something before */
1739 pipecb (EV_A_ &pipe_w, EV_READ); 2933 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1740 } 2934 }
2935#endif
1741 2936
1742 postfork = 0; 2937 postfork = 0;
1743} 2938}
1744 2939
1745#if EV_MULTIPLICITY 2940#if EV_MULTIPLICITY
1746 2941
1747struct ev_loop * 2942struct ev_loop * ecb_cold
1748ev_loop_new (unsigned int flags) 2943ev_loop_new (unsigned int flags) EV_THROW
1749{ 2944{
1750 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2945 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1751 2946
1752 memset (EV_A, 0, sizeof (struct ev_loop)); 2947 memset (EV_A, 0, sizeof (struct ev_loop));
1753 loop_init (EV_A_ flags); 2948 loop_init (EV_A_ flags);
1754 2949
1755 if (ev_backend (EV_A)) 2950 if (ev_backend (EV_A))
1756 return EV_A; 2951 return EV_A;
1757 2952
2953 ev_free (EV_A);
1758 return 0; 2954 return 0;
1759} 2955}
1760 2956
1761void
1762ev_loop_destroy (EV_P)
1763{
1764 loop_destroy (EV_A);
1765 ev_free (loop);
1766}
1767
1768void
1769ev_loop_fork (EV_P)
1770{
1771 postfork = 1; /* must be in line with ev_default_fork */
1772}
1773#endif /* multiplicity */ 2957#endif /* multiplicity */
1774 2958
1775#if EV_VERIFY 2959#if EV_VERIFY
1776static void noinline 2960static void noinline ecb_cold
1777verify_watcher (EV_P_ W w) 2961verify_watcher (EV_P_ W w)
1778{ 2962{
1779 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2963 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1780 2964
1781 if (w->pending) 2965 if (w->pending)
1782 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2966 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1783} 2967}
1784 2968
1785static void noinline 2969static void noinline ecb_cold
1786verify_heap (EV_P_ ANHE *heap, int N) 2970verify_heap (EV_P_ ANHE *heap, int N)
1787{ 2971{
1788 int i; 2972 int i;
1789 2973
1790 for (i = HEAP0; i < N + HEAP0; ++i) 2974 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1795 2979
1796 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2980 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1797 } 2981 }
1798} 2982}
1799 2983
1800static void noinline 2984static void noinline ecb_cold
1801array_verify (EV_P_ W *ws, int cnt) 2985array_verify (EV_P_ W *ws, int cnt)
1802{ 2986{
1803 while (cnt--) 2987 while (cnt--)
1804 { 2988 {
1805 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2989 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1806 verify_watcher (EV_A_ ws [cnt]); 2990 verify_watcher (EV_A_ ws [cnt]);
1807 } 2991 }
1808} 2992}
1809#endif 2993#endif
1810 2994
1811#if EV_MINIMAL < 2 2995#if EV_FEATURE_API
1812void 2996void ecb_cold
1813ev_loop_verify (EV_P) 2997ev_verify (EV_P) EV_THROW
1814{ 2998{
1815#if EV_VERIFY 2999#if EV_VERIFY
1816 int i; 3000 int i;
1817 WL w; 3001 WL w, w2;
1818 3002
1819 assert (activecnt >= -1); 3003 assert (activecnt >= -1);
1820 3004
1821 assert (fdchangemax >= fdchangecnt); 3005 assert (fdchangemax >= fdchangecnt);
1822 for (i = 0; i < fdchangecnt; ++i) 3006 for (i = 0; i < fdchangecnt; ++i)
1823 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3007 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1824 3008
1825 assert (anfdmax >= 0); 3009 assert (anfdmax >= 0);
1826 for (i = 0; i < anfdmax; ++i) 3010 for (i = 0; i < anfdmax; ++i)
3011 {
3012 int j = 0;
3013
1827 for (w = anfds [i].head; w; w = w->next) 3014 for (w = w2 = anfds [i].head; w; w = w->next)
1828 { 3015 {
1829 verify_watcher (EV_A_ (W)w); 3016 verify_watcher (EV_A_ (W)w);
3017
3018 if (j++ & 1)
3019 {
3020 assert (("libev: io watcher list contains a loop", w != w2));
3021 w2 = w2->next;
3022 }
3023
1830 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3024 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1831 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3025 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1832 } 3026 }
3027 }
1833 3028
1834 assert (timermax >= timercnt); 3029 assert (timermax >= timercnt);
1835 verify_heap (EV_A_ timers, timercnt); 3030 verify_heap (EV_A_ timers, timercnt);
1836 3031
1837#if EV_PERIODIC_ENABLE 3032#if EV_PERIODIC_ENABLE
… …
1852#if EV_FORK_ENABLE 3047#if EV_FORK_ENABLE
1853 assert (forkmax >= forkcnt); 3048 assert (forkmax >= forkcnt);
1854 array_verify (EV_A_ (W *)forks, forkcnt); 3049 array_verify (EV_A_ (W *)forks, forkcnt);
1855#endif 3050#endif
1856 3051
3052#if EV_CLEANUP_ENABLE
3053 assert (cleanupmax >= cleanupcnt);
3054 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
3055#endif
3056
1857#if EV_ASYNC_ENABLE 3057#if EV_ASYNC_ENABLE
1858 assert (asyncmax >= asynccnt); 3058 assert (asyncmax >= asynccnt);
1859 array_verify (EV_A_ (W *)asyncs, asynccnt); 3059 array_verify (EV_A_ (W *)asyncs, asynccnt);
1860#endif 3060#endif
1861 3061
3062#if EV_PREPARE_ENABLE
1862 assert (preparemax >= preparecnt); 3063 assert (preparemax >= preparecnt);
1863 array_verify (EV_A_ (W *)prepares, preparecnt); 3064 array_verify (EV_A_ (W *)prepares, preparecnt);
3065#endif
1864 3066
3067#if EV_CHECK_ENABLE
1865 assert (checkmax >= checkcnt); 3068 assert (checkmax >= checkcnt);
1866 array_verify (EV_A_ (W *)checks, checkcnt); 3069 array_verify (EV_A_ (W *)checks, checkcnt);
3070#endif
1867 3071
1868# if 0 3072# if 0
3073#if EV_CHILD_ENABLE
1869 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 3074 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1870 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 3075 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3076#endif
1871# endif 3077# endif
1872#endif 3078#endif
1873} 3079}
1874#endif 3080#endif
1875 3081
1876#if EV_MULTIPLICITY 3082#if EV_MULTIPLICITY
1877struct ev_loop * 3083struct ev_loop * ecb_cold
1878ev_default_loop_init (unsigned int flags)
1879#else 3084#else
1880int 3085int
3086#endif
1881ev_default_loop (unsigned int flags) 3087ev_default_loop (unsigned int flags) EV_THROW
1882#endif
1883{ 3088{
1884 if (!ev_default_loop_ptr) 3089 if (!ev_default_loop_ptr)
1885 { 3090 {
1886#if EV_MULTIPLICITY 3091#if EV_MULTIPLICITY
1887 EV_P = ev_default_loop_ptr = &default_loop_struct; 3092 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1891 3096
1892 loop_init (EV_A_ flags); 3097 loop_init (EV_A_ flags);
1893 3098
1894 if (ev_backend (EV_A)) 3099 if (ev_backend (EV_A))
1895 { 3100 {
1896#ifndef _WIN32 3101#if EV_CHILD_ENABLE
1897 ev_signal_init (&childev, childcb, SIGCHLD); 3102 ev_signal_init (&childev, childcb, SIGCHLD);
1898 ev_set_priority (&childev, EV_MAXPRI); 3103 ev_set_priority (&childev, EV_MAXPRI);
1899 ev_signal_start (EV_A_ &childev); 3104 ev_signal_start (EV_A_ &childev);
1900 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3105 ev_unref (EV_A); /* child watcher should not keep loop alive */
1901#endif 3106#endif
… …
1906 3111
1907 return ev_default_loop_ptr; 3112 return ev_default_loop_ptr;
1908} 3113}
1909 3114
1910void 3115void
1911ev_default_destroy (void) 3116ev_loop_fork (EV_P) EV_THROW
1912{ 3117{
1913#if EV_MULTIPLICITY 3118 postfork = 1;
1914 EV_P = ev_default_loop_ptr;
1915#endif
1916
1917 ev_default_loop_ptr = 0;
1918
1919#ifndef _WIN32
1920 ev_ref (EV_A); /* child watcher */
1921 ev_signal_stop (EV_A_ &childev);
1922#endif
1923
1924 loop_destroy (EV_A);
1925}
1926
1927void
1928ev_default_fork (void)
1929{
1930#if EV_MULTIPLICITY
1931 EV_P = ev_default_loop_ptr;
1932#endif
1933
1934 postfork = 1; /* must be in line with ev_loop_fork */
1935} 3119}
1936 3120
1937/*****************************************************************************/ 3121/*****************************************************************************/
1938 3122
1939void 3123void
… …
1941{ 3125{
1942 EV_CB_INVOKE ((W)w, revents); 3126 EV_CB_INVOKE ((W)w, revents);
1943} 3127}
1944 3128
1945unsigned int 3129unsigned int
1946ev_pending_count (EV_P) 3130ev_pending_count (EV_P) EV_THROW
1947{ 3131{
1948 int pri; 3132 int pri;
1949 unsigned int count = 0; 3133 unsigned int count = 0;
1950 3134
1951 for (pri = NUMPRI; pri--; ) 3135 for (pri = NUMPRI; pri--; )
… …
1955} 3139}
1956 3140
1957void noinline 3141void noinline
1958ev_invoke_pending (EV_P) 3142ev_invoke_pending (EV_P)
1959{ 3143{
1960 int pri; 3144 pendingpri = NUMPRI;
1961 3145
1962 for (pri = NUMPRI; pri--; ) 3146 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3147 {
3148 --pendingpri;
3149
1963 while (pendingcnt [pri]) 3150 while (pendingcnt [pendingpri])
1964 { 3151 {
1965 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3152 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1966 3153
1967 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1968 /* ^ this is no longer true, as pending_w could be here */
1969
1970 p->w->pending = 0; 3154 p->w->pending = 0;
1971 EV_CB_INVOKE (p->w, p->events); 3155 EV_CB_INVOKE (p->w, p->events);
1972 EV_FREQUENT_CHECK; 3156 EV_FREQUENT_CHECK;
1973 } 3157 }
3158 }
1974} 3159}
1975 3160
1976#if EV_IDLE_ENABLE 3161#if EV_IDLE_ENABLE
1977/* make idle watchers pending. this handles the "call-idle */ 3162/* make idle watchers pending. this handles the "call-idle */
1978/* only when higher priorities are idle" logic */ 3163/* only when higher priorities are idle" logic */
… …
2030 EV_FREQUENT_CHECK; 3215 EV_FREQUENT_CHECK;
2031 feed_reverse (EV_A_ (W)w); 3216 feed_reverse (EV_A_ (W)w);
2032 } 3217 }
2033 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3218 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2034 3219
2035 feed_reverse_done (EV_A_ EV_TIMEOUT); 3220 feed_reverse_done (EV_A_ EV_TIMER);
2036 } 3221 }
2037} 3222}
2038 3223
2039#if EV_PERIODIC_ENABLE 3224#if EV_PERIODIC_ENABLE
3225
3226static void noinline
3227periodic_recalc (EV_P_ ev_periodic *w)
3228{
3229 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3230 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3231
3232 /* the above almost always errs on the low side */
3233 while (at <= ev_rt_now)
3234 {
3235 ev_tstamp nat = at + w->interval;
3236
3237 /* when resolution fails us, we use ev_rt_now */
3238 if (expect_false (nat == at))
3239 {
3240 at = ev_rt_now;
3241 break;
3242 }
3243
3244 at = nat;
3245 }
3246
3247 ev_at (w) = at;
3248}
3249
2040/* make periodics pending */ 3250/* make periodics pending */
2041inline_size void 3251inline_size void
2042periodics_reify (EV_P) 3252periodics_reify (EV_P)
2043{ 3253{
2044 EV_FREQUENT_CHECK; 3254 EV_FREQUENT_CHECK;
2045 3255
2046 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3256 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2047 { 3257 {
2048 int feed_count = 0;
2049
2050 do 3258 do
2051 { 3259 {
2052 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3260 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2053 3261
2054 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3262 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2063 ANHE_at_cache (periodics [HEAP0]); 3271 ANHE_at_cache (periodics [HEAP0]);
2064 downheap (periodics, periodiccnt, HEAP0); 3272 downheap (periodics, periodiccnt, HEAP0);
2065 } 3273 }
2066 else if (w->interval) 3274 else if (w->interval)
2067 { 3275 {
2068 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3276 periodic_recalc (EV_A_ w);
2069 /* if next trigger time is not sufficiently in the future, put it there */
2070 /* this might happen because of floating point inexactness */
2071 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2072 {
2073 ev_at (w) += w->interval;
2074
2075 /* if interval is unreasonably low we might still have a time in the past */
2076 /* so correct this. this will make the periodic very inexact, but the user */
2077 /* has effectively asked to get triggered more often than possible */
2078 if (ev_at (w) < ev_rt_now)
2079 ev_at (w) = ev_rt_now;
2080 }
2081
2082 ANHE_at_cache (periodics [HEAP0]); 3277 ANHE_at_cache (periodics [HEAP0]);
2083 downheap (periodics, periodiccnt, HEAP0); 3278 downheap (periodics, periodiccnt, HEAP0);
2084 } 3279 }
2085 else 3280 else
2086 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3281 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2093 feed_reverse_done (EV_A_ EV_PERIODIC); 3288 feed_reverse_done (EV_A_ EV_PERIODIC);
2094 } 3289 }
2095} 3290}
2096 3291
2097/* simply recalculate all periodics */ 3292/* simply recalculate all periodics */
2098/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3293/* TODO: maybe ensure that at least one event happens when jumping forward? */
2099static void noinline 3294static void noinline ecb_cold
2100periodics_reschedule (EV_P) 3295periodics_reschedule (EV_P)
2101{ 3296{
2102 int i; 3297 int i;
2103 3298
2104 /* adjust periodics after time jump */ 3299 /* adjust periodics after time jump */
… …
2107 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3302 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2108 3303
2109 if (w->reschedule_cb) 3304 if (w->reschedule_cb)
2110 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3305 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2111 else if (w->interval) 3306 else if (w->interval)
2112 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3307 periodic_recalc (EV_A_ w);
2113 3308
2114 ANHE_at_cache (periodics [i]); 3309 ANHE_at_cache (periodics [i]);
2115 } 3310 }
2116 3311
2117 reheap (periodics, periodiccnt); 3312 reheap (periodics, periodiccnt);
2118} 3313}
2119#endif 3314#endif
2120 3315
2121/* adjust all timers by a given offset */ 3316/* adjust all timers by a given offset */
2122static void noinline 3317static void noinline ecb_cold
2123timers_reschedule (EV_P_ ev_tstamp adjust) 3318timers_reschedule (EV_P_ ev_tstamp adjust)
2124{ 3319{
2125 int i; 3320 int i;
2126 3321
2127 for (i = 0; i < timercnt; ++i) 3322 for (i = 0; i < timercnt; ++i)
… …
2131 ANHE_at_cache (*he); 3326 ANHE_at_cache (*he);
2132 } 3327 }
2133} 3328}
2134 3329
2135/* fetch new monotonic and realtime times from the kernel */ 3330/* fetch new monotonic and realtime times from the kernel */
2136/* also detetc if there was a timejump, and act accordingly */ 3331/* also detect if there was a timejump, and act accordingly */
2137inline_speed void 3332inline_speed void
2138time_update (EV_P_ ev_tstamp max_block) 3333time_update (EV_P_ ev_tstamp max_block)
2139{ 3334{
2140#if EV_USE_MONOTONIC 3335#if EV_USE_MONOTONIC
2141 if (expect_true (have_monotonic)) 3336 if (expect_true (have_monotonic))
… …
2164 * doesn't hurt either as we only do this on time-jumps or 3359 * doesn't hurt either as we only do this on time-jumps or
2165 * in the unlikely event of having been preempted here. 3360 * in the unlikely event of having been preempted here.
2166 */ 3361 */
2167 for (i = 4; --i; ) 3362 for (i = 4; --i; )
2168 { 3363 {
3364 ev_tstamp diff;
2169 rtmn_diff = ev_rt_now - mn_now; 3365 rtmn_diff = ev_rt_now - mn_now;
2170 3366
3367 diff = odiff - rtmn_diff;
3368
2171 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3369 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2172 return; /* all is well */ 3370 return; /* all is well */
2173 3371
2174 ev_rt_now = ev_time (); 3372 ev_rt_now = ev_time ();
2175 mn_now = get_clock (); 3373 mn_now = get_clock ();
2176 now_floor = mn_now; 3374 now_floor = mn_now;
… …
2198 3396
2199 mn_now = ev_rt_now; 3397 mn_now = ev_rt_now;
2200 } 3398 }
2201} 3399}
2202 3400
2203void 3401int
2204ev_loop (EV_P_ int flags) 3402ev_run (EV_P_ int flags)
2205{ 3403{
2206#if EV_MINIMAL < 2 3404#if EV_FEATURE_API
2207 ++loop_depth; 3405 ++loop_depth;
2208#endif 3406#endif
2209 3407
2210 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3408 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2211 3409
2212 loop_done = EVUNLOOP_CANCEL; 3410 loop_done = EVBREAK_CANCEL;
2213 3411
2214 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3412 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2215 3413
2216 do 3414 do
2217 { 3415 {
2218#if EV_VERIFY >= 2 3416#if EV_VERIFY >= 2
2219 ev_loop_verify (EV_A); 3417 ev_verify (EV_A);
2220#endif 3418#endif
2221 3419
2222#ifndef _WIN32 3420#ifndef _WIN32
2223 if (expect_false (curpid)) /* penalise the forking check even more */ 3421 if (expect_false (curpid)) /* penalise the forking check even more */
2224 if (expect_false (getpid () != curpid)) 3422 if (expect_false (getpid () != curpid))
… …
2236 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3434 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2237 EV_INVOKE_PENDING; 3435 EV_INVOKE_PENDING;
2238 } 3436 }
2239#endif 3437#endif
2240 3438
3439#if EV_PREPARE_ENABLE
2241 /* queue prepare watchers (and execute them) */ 3440 /* queue prepare watchers (and execute them) */
2242 if (expect_false (preparecnt)) 3441 if (expect_false (preparecnt))
2243 { 3442 {
2244 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3443 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2245 EV_INVOKE_PENDING; 3444 EV_INVOKE_PENDING;
2246 } 3445 }
3446#endif
2247 3447
2248 if (expect_false (loop_done)) 3448 if (expect_false (loop_done))
2249 break; 3449 break;
2250 3450
2251 /* we might have forked, so reify kernel state if necessary */ 3451 /* we might have forked, so reify kernel state if necessary */
… …
2258 /* calculate blocking time */ 3458 /* calculate blocking time */
2259 { 3459 {
2260 ev_tstamp waittime = 0.; 3460 ev_tstamp waittime = 0.;
2261 ev_tstamp sleeptime = 0.; 3461 ev_tstamp sleeptime = 0.;
2262 3462
3463 /* remember old timestamp for io_blocktime calculation */
3464 ev_tstamp prev_mn_now = mn_now;
3465
3466 /* update time to cancel out callback processing overhead */
3467 time_update (EV_A_ 1e100);
3468
3469 /* from now on, we want a pipe-wake-up */
3470 pipe_write_wanted = 1;
3471
3472 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3473
2263 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3474 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2264 { 3475 {
2265 /* remember old timestamp for io_blocktime calculation */
2266 ev_tstamp prev_mn_now = mn_now;
2267
2268 /* update time to cancel out callback processing overhead */
2269 time_update (EV_A_ 1e100);
2270
2271 waittime = MAX_BLOCKTIME; 3476 waittime = MAX_BLOCKTIME;
2272 3477
2273 if (timercnt) 3478 if (timercnt)
2274 { 3479 {
2275 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3480 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2276 if (waittime > to) waittime = to; 3481 if (waittime > to) waittime = to;
2277 } 3482 }
2278 3483
2279#if EV_PERIODIC_ENABLE 3484#if EV_PERIODIC_ENABLE
2280 if (periodiccnt) 3485 if (periodiccnt)
2281 { 3486 {
2282 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3487 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2283 if (waittime > to) waittime = to; 3488 if (waittime > to) waittime = to;
2284 } 3489 }
2285#endif 3490#endif
2286 3491
2287 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3492 /* don't let timeouts decrease the waittime below timeout_blocktime */
2288 if (expect_false (waittime < timeout_blocktime)) 3493 if (expect_false (waittime < timeout_blocktime))
2289 waittime = timeout_blocktime; 3494 waittime = timeout_blocktime;
3495
3496 /* at this point, we NEED to wait, so we have to ensure */
3497 /* to pass a minimum nonzero value to the backend */
3498 if (expect_false (waittime < backend_mintime))
3499 waittime = backend_mintime;
2290 3500
2291 /* extra check because io_blocktime is commonly 0 */ 3501 /* extra check because io_blocktime is commonly 0 */
2292 if (expect_false (io_blocktime)) 3502 if (expect_false (io_blocktime))
2293 { 3503 {
2294 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3504 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2295 3505
2296 if (sleeptime > waittime - backend_fudge) 3506 if (sleeptime > waittime - backend_mintime)
2297 sleeptime = waittime - backend_fudge; 3507 sleeptime = waittime - backend_mintime;
2298 3508
2299 if (expect_true (sleeptime > 0.)) 3509 if (expect_true (sleeptime > 0.))
2300 { 3510 {
2301 ev_sleep (sleeptime); 3511 ev_sleep (sleeptime);
2302 waittime -= sleeptime; 3512 waittime -= sleeptime;
2303 } 3513 }
2304 } 3514 }
2305 } 3515 }
2306 3516
2307#if EV_MINIMAL < 2 3517#if EV_FEATURE_API
2308 ++loop_count; 3518 ++loop_count;
2309#endif 3519#endif
2310 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3520 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2311 backend_poll (EV_A_ waittime); 3521 backend_poll (EV_A_ waittime);
2312 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3522 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3523
3524 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3525
3526 ECB_MEMORY_FENCE_ACQUIRE;
3527 if (pipe_write_skipped)
3528 {
3529 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3530 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3531 }
3532
2313 3533
2314 /* update ev_rt_now, do magic */ 3534 /* update ev_rt_now, do magic */
2315 time_update (EV_A_ waittime + sleeptime); 3535 time_update (EV_A_ waittime + sleeptime);
2316 } 3536 }
2317 3537
… …
2324#if EV_IDLE_ENABLE 3544#if EV_IDLE_ENABLE
2325 /* queue idle watchers unless other events are pending */ 3545 /* queue idle watchers unless other events are pending */
2326 idle_reify (EV_A); 3546 idle_reify (EV_A);
2327#endif 3547#endif
2328 3548
3549#if EV_CHECK_ENABLE
2329 /* queue check watchers, to be executed first */ 3550 /* queue check watchers, to be executed first */
2330 if (expect_false (checkcnt)) 3551 if (expect_false (checkcnt))
2331 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3552 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3553#endif
2332 3554
2333 EV_INVOKE_PENDING; 3555 EV_INVOKE_PENDING;
2334 } 3556 }
2335 while (expect_true ( 3557 while (expect_true (
2336 activecnt 3558 activecnt
2337 && !loop_done 3559 && !loop_done
2338 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3560 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2339 )); 3561 ));
2340 3562
2341 if (loop_done == EVUNLOOP_ONE) 3563 if (loop_done == EVBREAK_ONE)
2342 loop_done = EVUNLOOP_CANCEL; 3564 loop_done = EVBREAK_CANCEL;
2343 3565
2344#if EV_MINIMAL < 2 3566#if EV_FEATURE_API
2345 --loop_depth; 3567 --loop_depth;
2346#endif 3568#endif
3569
3570 return activecnt;
2347} 3571}
2348 3572
2349void 3573void
2350ev_unloop (EV_P_ int how) 3574ev_break (EV_P_ int how) EV_THROW
2351{ 3575{
2352 loop_done = how; 3576 loop_done = how;
2353} 3577}
2354 3578
2355void 3579void
2356ev_ref (EV_P) 3580ev_ref (EV_P) EV_THROW
2357{ 3581{
2358 ++activecnt; 3582 ++activecnt;
2359} 3583}
2360 3584
2361void 3585void
2362ev_unref (EV_P) 3586ev_unref (EV_P) EV_THROW
2363{ 3587{
2364 --activecnt; 3588 --activecnt;
2365} 3589}
2366 3590
2367void 3591void
2368ev_now_update (EV_P) 3592ev_now_update (EV_P) EV_THROW
2369{ 3593{
2370 time_update (EV_A_ 1e100); 3594 time_update (EV_A_ 1e100);
2371} 3595}
2372 3596
2373void 3597void
2374ev_suspend (EV_P) 3598ev_suspend (EV_P) EV_THROW
2375{ 3599{
2376 ev_now_update (EV_A); 3600 ev_now_update (EV_A);
2377} 3601}
2378 3602
2379void 3603void
2380ev_resume (EV_P) 3604ev_resume (EV_P) EV_THROW
2381{ 3605{
2382 ev_tstamp mn_prev = mn_now; 3606 ev_tstamp mn_prev = mn_now;
2383 3607
2384 ev_now_update (EV_A); 3608 ev_now_update (EV_A);
2385 timers_reschedule (EV_A_ mn_now - mn_prev); 3609 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2424 w->pending = 0; 3648 w->pending = 0;
2425 } 3649 }
2426} 3650}
2427 3651
2428int 3652int
2429ev_clear_pending (EV_P_ void *w) 3653ev_clear_pending (EV_P_ void *w) EV_THROW
2430{ 3654{
2431 W w_ = (W)w; 3655 W w_ = (W)w;
2432 int pending = w_->pending; 3656 int pending = w_->pending;
2433 3657
2434 if (expect_true (pending)) 3658 if (expect_true (pending))
… …
2467} 3691}
2468 3692
2469/*****************************************************************************/ 3693/*****************************************************************************/
2470 3694
2471void noinline 3695void noinline
2472ev_io_start (EV_P_ ev_io *w) 3696ev_io_start (EV_P_ ev_io *w) EV_THROW
2473{ 3697{
2474 int fd = w->fd; 3698 int fd = w->fd;
2475 3699
2476 if (expect_false (ev_is_active (w))) 3700 if (expect_false (ev_is_active (w)))
2477 return; 3701 return;
2478 3702
2479 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3703 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2480 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3704 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2481 3705
2482 EV_FREQUENT_CHECK; 3706 EV_FREQUENT_CHECK;
2483 3707
2484 ev_start (EV_A_ (W)w, 1); 3708 ev_start (EV_A_ (W)w, 1);
2485 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3709 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2486 wlist_add (&anfds[fd].head, (WL)w); 3710 wlist_add (&anfds[fd].head, (WL)w);
2487 3711
3712 /* common bug, apparently */
3713 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3714
2488 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3715 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2489 w->events &= ~EV__IOFDSET; 3716 w->events &= ~EV__IOFDSET;
2490 3717
2491 EV_FREQUENT_CHECK; 3718 EV_FREQUENT_CHECK;
2492} 3719}
2493 3720
2494void noinline 3721void noinline
2495ev_io_stop (EV_P_ ev_io *w) 3722ev_io_stop (EV_P_ ev_io *w) EV_THROW
2496{ 3723{
2497 clear_pending (EV_A_ (W)w); 3724 clear_pending (EV_A_ (W)w);
2498 if (expect_false (!ev_is_active (w))) 3725 if (expect_false (!ev_is_active (w)))
2499 return; 3726 return;
2500 3727
… …
2503 EV_FREQUENT_CHECK; 3730 EV_FREQUENT_CHECK;
2504 3731
2505 wlist_del (&anfds[w->fd].head, (WL)w); 3732 wlist_del (&anfds[w->fd].head, (WL)w);
2506 ev_stop (EV_A_ (W)w); 3733 ev_stop (EV_A_ (W)w);
2507 3734
2508 fd_change (EV_A_ w->fd, 1); 3735 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2509 3736
2510 EV_FREQUENT_CHECK; 3737 EV_FREQUENT_CHECK;
2511} 3738}
2512 3739
2513void noinline 3740void noinline
2514ev_timer_start (EV_P_ ev_timer *w) 3741ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2515{ 3742{
2516 if (expect_false (ev_is_active (w))) 3743 if (expect_false (ev_is_active (w)))
2517 return; 3744 return;
2518 3745
2519 ev_at (w) += mn_now; 3746 ev_at (w) += mn_now;
… …
2533 3760
2534 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3761 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2535} 3762}
2536 3763
2537void noinline 3764void noinline
2538ev_timer_stop (EV_P_ ev_timer *w) 3765ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2539{ 3766{
2540 clear_pending (EV_A_ (W)w); 3767 clear_pending (EV_A_ (W)w);
2541 if (expect_false (!ev_is_active (w))) 3768 if (expect_false (!ev_is_active (w)))
2542 return; 3769 return;
2543 3770
… …
2555 timers [active] = timers [timercnt + HEAP0]; 3782 timers [active] = timers [timercnt + HEAP0];
2556 adjustheap (timers, timercnt, active); 3783 adjustheap (timers, timercnt, active);
2557 } 3784 }
2558 } 3785 }
2559 3786
2560 EV_FREQUENT_CHECK;
2561
2562 ev_at (w) -= mn_now; 3787 ev_at (w) -= mn_now;
2563 3788
2564 ev_stop (EV_A_ (W)w); 3789 ev_stop (EV_A_ (W)w);
3790
3791 EV_FREQUENT_CHECK;
2565} 3792}
2566 3793
2567void noinline 3794void noinline
2568ev_timer_again (EV_P_ ev_timer *w) 3795ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2569{ 3796{
2570 EV_FREQUENT_CHECK; 3797 EV_FREQUENT_CHECK;
3798
3799 clear_pending (EV_A_ (W)w);
2571 3800
2572 if (ev_is_active (w)) 3801 if (ev_is_active (w))
2573 { 3802 {
2574 if (w->repeat) 3803 if (w->repeat)
2575 { 3804 {
… …
2588 3817
2589 EV_FREQUENT_CHECK; 3818 EV_FREQUENT_CHECK;
2590} 3819}
2591 3820
2592ev_tstamp 3821ev_tstamp
2593ev_timer_remaining (EV_P_ ev_timer *w) 3822ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2594{ 3823{
2595 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3824 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2596} 3825}
2597 3826
2598#if EV_PERIODIC_ENABLE 3827#if EV_PERIODIC_ENABLE
2599void noinline 3828void noinline
2600ev_periodic_start (EV_P_ ev_periodic *w) 3829ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2601{ 3830{
2602 if (expect_false (ev_is_active (w))) 3831 if (expect_false (ev_is_active (w)))
2603 return; 3832 return;
2604 3833
2605 if (w->reschedule_cb) 3834 if (w->reschedule_cb)
2606 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3835 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2607 else if (w->interval) 3836 else if (w->interval)
2608 { 3837 {
2609 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3838 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2610 /* this formula differs from the one in periodic_reify because we do not always round up */ 3839 periodic_recalc (EV_A_ w);
2611 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2612 } 3840 }
2613 else 3841 else
2614 ev_at (w) = w->offset; 3842 ev_at (w) = w->offset;
2615 3843
2616 EV_FREQUENT_CHECK; 3844 EV_FREQUENT_CHECK;
… …
2626 3854
2627 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3855 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2628} 3856}
2629 3857
2630void noinline 3858void noinline
2631ev_periodic_stop (EV_P_ ev_periodic *w) 3859ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2632{ 3860{
2633 clear_pending (EV_A_ (W)w); 3861 clear_pending (EV_A_ (W)w);
2634 if (expect_false (!ev_is_active (w))) 3862 if (expect_false (!ev_is_active (w)))
2635 return; 3863 return;
2636 3864
… …
2648 periodics [active] = periodics [periodiccnt + HEAP0]; 3876 periodics [active] = periodics [periodiccnt + HEAP0];
2649 adjustheap (periodics, periodiccnt, active); 3877 adjustheap (periodics, periodiccnt, active);
2650 } 3878 }
2651 } 3879 }
2652 3880
2653 EV_FREQUENT_CHECK;
2654
2655 ev_stop (EV_A_ (W)w); 3881 ev_stop (EV_A_ (W)w);
3882
3883 EV_FREQUENT_CHECK;
2656} 3884}
2657 3885
2658void noinline 3886void noinline
2659ev_periodic_again (EV_P_ ev_periodic *w) 3887ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2660{ 3888{
2661 /* TODO: use adjustheap and recalculation */ 3889 /* TODO: use adjustheap and recalculation */
2662 ev_periodic_stop (EV_A_ w); 3890 ev_periodic_stop (EV_A_ w);
2663 ev_periodic_start (EV_A_ w); 3891 ev_periodic_start (EV_A_ w);
2664} 3892}
… …
2666 3894
2667#ifndef SA_RESTART 3895#ifndef SA_RESTART
2668# define SA_RESTART 0 3896# define SA_RESTART 0
2669#endif 3897#endif
2670 3898
3899#if EV_SIGNAL_ENABLE
3900
2671void noinline 3901void noinline
2672ev_signal_start (EV_P_ ev_signal *w) 3902ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2673{ 3903{
2674 if (expect_false (ev_is_active (w))) 3904 if (expect_false (ev_is_active (w)))
2675 return; 3905 return;
2676 3906
2677 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3907 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2679#if EV_MULTIPLICITY 3909#if EV_MULTIPLICITY
2680 assert (("libev: a signal must not be attached to two different loops", 3910 assert (("libev: a signal must not be attached to two different loops",
2681 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3911 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2682 3912
2683 signals [w->signum - 1].loop = EV_A; 3913 signals [w->signum - 1].loop = EV_A;
3914 ECB_MEMORY_FENCE_RELEASE;
2684#endif 3915#endif
2685 3916
2686 EV_FREQUENT_CHECK; 3917 EV_FREQUENT_CHECK;
2687 3918
2688#if EV_USE_SIGNALFD 3919#if EV_USE_SIGNALFD
… …
2721 if (!((WL)w)->next) 3952 if (!((WL)w)->next)
2722# if EV_USE_SIGNALFD 3953# if EV_USE_SIGNALFD
2723 if (sigfd < 0) /*TODO*/ 3954 if (sigfd < 0) /*TODO*/
2724# endif 3955# endif
2725 { 3956 {
2726# if _WIN32 3957# ifdef _WIN32
3958 evpipe_init (EV_A);
3959
2727 signal (w->signum, ev_sighandler); 3960 signal (w->signum, ev_sighandler);
2728# else 3961# else
2729 struct sigaction sa; 3962 struct sigaction sa;
2730 3963
2731 evpipe_init (EV_A); 3964 evpipe_init (EV_A);
… …
2733 sa.sa_handler = ev_sighandler; 3966 sa.sa_handler = ev_sighandler;
2734 sigfillset (&sa.sa_mask); 3967 sigfillset (&sa.sa_mask);
2735 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3968 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2736 sigaction (w->signum, &sa, 0); 3969 sigaction (w->signum, &sa, 0);
2737 3970
3971 if (origflags & EVFLAG_NOSIGMASK)
3972 {
2738 sigemptyset (&sa.sa_mask); 3973 sigemptyset (&sa.sa_mask);
2739 sigaddset (&sa.sa_mask, w->signum); 3974 sigaddset (&sa.sa_mask, w->signum);
2740 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3975 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3976 }
2741#endif 3977#endif
2742 } 3978 }
2743 3979
2744 EV_FREQUENT_CHECK; 3980 EV_FREQUENT_CHECK;
2745} 3981}
2746 3982
2747void noinline 3983void noinline
2748ev_signal_stop (EV_P_ ev_signal *w) 3984ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2749{ 3985{
2750 clear_pending (EV_A_ (W)w); 3986 clear_pending (EV_A_ (W)w);
2751 if (expect_false (!ev_is_active (w))) 3987 if (expect_false (!ev_is_active (w)))
2752 return; 3988 return;
2753 3989
… …
2762 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3998 signals [w->signum - 1].loop = 0; /* unattach from signal */
2763#endif 3999#endif
2764#if EV_USE_SIGNALFD 4000#if EV_USE_SIGNALFD
2765 if (sigfd >= 0) 4001 if (sigfd >= 0)
2766 { 4002 {
2767 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 4003 sigset_t ss;
4004
4005 sigemptyset (&ss);
4006 sigaddset (&ss, w->signum);
2768 sigdelset (&sigfd_set, w->signum); 4007 sigdelset (&sigfd_set, w->signum);
4008
2769 signalfd (sigfd, &sigfd_set, 0); 4009 signalfd (sigfd, &sigfd_set, 0);
2770 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 4010 sigprocmask (SIG_UNBLOCK, &ss, 0);
2771 /*TODO: maybe unblock signal? */
2772 } 4011 }
2773 else 4012 else
2774#endif 4013#endif
2775 signal (w->signum, SIG_DFL); 4014 signal (w->signum, SIG_DFL);
2776 } 4015 }
2777 4016
2778 EV_FREQUENT_CHECK; 4017 EV_FREQUENT_CHECK;
2779} 4018}
2780 4019
4020#endif
4021
4022#if EV_CHILD_ENABLE
4023
2781void 4024void
2782ev_child_start (EV_P_ ev_child *w) 4025ev_child_start (EV_P_ ev_child *w) EV_THROW
2783{ 4026{
2784#if EV_MULTIPLICITY 4027#if EV_MULTIPLICITY
2785 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4028 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2786#endif 4029#endif
2787 if (expect_false (ev_is_active (w))) 4030 if (expect_false (ev_is_active (w)))
2788 return; 4031 return;
2789 4032
2790 EV_FREQUENT_CHECK; 4033 EV_FREQUENT_CHECK;
2791 4034
2792 ev_start (EV_A_ (W)w, 1); 4035 ev_start (EV_A_ (W)w, 1);
2793 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4036 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2794 4037
2795 EV_FREQUENT_CHECK; 4038 EV_FREQUENT_CHECK;
2796} 4039}
2797 4040
2798void 4041void
2799ev_child_stop (EV_P_ ev_child *w) 4042ev_child_stop (EV_P_ ev_child *w) EV_THROW
2800{ 4043{
2801 clear_pending (EV_A_ (W)w); 4044 clear_pending (EV_A_ (W)w);
2802 if (expect_false (!ev_is_active (w))) 4045 if (expect_false (!ev_is_active (w)))
2803 return; 4046 return;
2804 4047
2805 EV_FREQUENT_CHECK; 4048 EV_FREQUENT_CHECK;
2806 4049
2807 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 4050 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2808 ev_stop (EV_A_ (W)w); 4051 ev_stop (EV_A_ (W)w);
2809 4052
2810 EV_FREQUENT_CHECK; 4053 EV_FREQUENT_CHECK;
2811} 4054}
4055
4056#endif
2812 4057
2813#if EV_STAT_ENABLE 4058#if EV_STAT_ENABLE
2814 4059
2815# ifdef _WIN32 4060# ifdef _WIN32
2816# undef lstat 4061# undef lstat
… …
2822#define MIN_STAT_INTERVAL 0.1074891 4067#define MIN_STAT_INTERVAL 0.1074891
2823 4068
2824static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4069static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2825 4070
2826#if EV_USE_INOTIFY 4071#if EV_USE_INOTIFY
2827# define EV_INOTIFY_BUFSIZE 8192 4072
4073/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
4074# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2828 4075
2829static void noinline 4076static void noinline
2830infy_add (EV_P_ ev_stat *w) 4077infy_add (EV_P_ ev_stat *w)
2831{ 4078{
2832 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); 4079 w->wd = inotify_add_watch (fs_fd, w->path,
4080 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4081 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4082 | IN_DONT_FOLLOW | IN_MASK_ADD);
2833 4083
2834 if (w->wd < 0) 4084 if (w->wd >= 0)
4085 {
4086 struct statfs sfs;
4087
4088 /* now local changes will be tracked by inotify, but remote changes won't */
4089 /* unless the filesystem is known to be local, we therefore still poll */
4090 /* also do poll on <2.6.25, but with normal frequency */
4091
4092 if (!fs_2625)
4093 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4094 else if (!statfs (w->path, &sfs)
4095 && (sfs.f_type == 0x1373 /* devfs */
4096 || sfs.f_type == 0x4006 /* fat */
4097 || sfs.f_type == 0x4d44 /* msdos */
4098 || sfs.f_type == 0xEF53 /* ext2/3 */
4099 || sfs.f_type == 0x72b6 /* jffs2 */
4100 || sfs.f_type == 0x858458f6 /* ramfs */
4101 || sfs.f_type == 0x5346544e /* ntfs */
4102 || sfs.f_type == 0x3153464a /* jfs */
4103 || sfs.f_type == 0x9123683e /* btrfs */
4104 || sfs.f_type == 0x52654973 /* reiser3 */
4105 || sfs.f_type == 0x01021994 /* tmpfs */
4106 || sfs.f_type == 0x58465342 /* xfs */))
4107 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4108 else
4109 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2835 { 4110 }
4111 else
4112 {
4113 /* can't use inotify, continue to stat */
2836 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4114 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2837 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2838 4115
2839 /* monitor some parent directory for speedup hints */ 4116 /* if path is not there, monitor some parent directory for speedup hints */
2840 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4117 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2841 /* but an efficiency issue only */ 4118 /* but an efficiency issue only */
2842 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4119 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2843 { 4120 {
2844 char path [4096]; 4121 char path [4096];
… …
2854 if (!pend || pend == path) 4131 if (!pend || pend == path)
2855 break; 4132 break;
2856 4133
2857 *pend = 0; 4134 *pend = 0;
2858 w->wd = inotify_add_watch (fs_fd, path, mask); 4135 w->wd = inotify_add_watch (fs_fd, path, mask);
2859 } 4136 }
2860 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4137 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2861 } 4138 }
2862 } 4139 }
2863 4140
2864 if (w->wd >= 0) 4141 if (w->wd >= 0)
2865 {
2866 struct statfs sfs;
2867
2868 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4142 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2869 4143
2870 /* now local changes will be tracked by inotify, but remote changes won't */ 4144 /* now re-arm timer, if required */
2871 /* unless the filesystem it known to be local, we therefore still poll */ 4145 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2872 /* also do poll on <2.6.25, but with normal frequency */
2873
2874 if (fs_2625 && !statfs (w->path, &sfs))
2875 if (sfs.f_type == 0x1373 /* devfs */
2876 || sfs.f_type == 0xEF53 /* ext2/3 */
2877 || sfs.f_type == 0x3153464a /* jfs */
2878 || sfs.f_type == 0x52654973 /* reiser3 */
2879 || sfs.f_type == 0x01021994 /* tempfs */
2880 || sfs.f_type == 0x58465342 /* xfs */)
2881 return;
2882
2883 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2884 ev_timer_again (EV_A_ &w->timer); 4146 ev_timer_again (EV_A_ &w->timer);
2885 } 4147 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2886} 4148}
2887 4149
2888static void noinline 4150static void noinline
2889infy_del (EV_P_ ev_stat *w) 4151infy_del (EV_P_ ev_stat *w)
2890{ 4152{
… …
2893 4155
2894 if (wd < 0) 4156 if (wd < 0)
2895 return; 4157 return;
2896 4158
2897 w->wd = -2; 4159 w->wd = -2;
2898 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4160 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2899 wlist_del (&fs_hash [slot].head, (WL)w); 4161 wlist_del (&fs_hash [slot].head, (WL)w);
2900 4162
2901 /* remove this watcher, if others are watching it, they will rearm */ 4163 /* remove this watcher, if others are watching it, they will rearm */
2902 inotify_rm_watch (fs_fd, wd); 4164 inotify_rm_watch (fs_fd, wd);
2903} 4165}
… …
2905static void noinline 4167static void noinline
2906infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4168infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2907{ 4169{
2908 if (slot < 0) 4170 if (slot < 0)
2909 /* overflow, need to check for all hash slots */ 4171 /* overflow, need to check for all hash slots */
2910 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4172 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2911 infy_wd (EV_A_ slot, wd, ev); 4173 infy_wd (EV_A_ slot, wd, ev);
2912 else 4174 else
2913 { 4175 {
2914 WL w_; 4176 WL w_;
2915 4177
2916 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4178 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2917 { 4179 {
2918 ev_stat *w = (ev_stat *)w_; 4180 ev_stat *w = (ev_stat *)w_;
2919 w_ = w_->next; /* lets us remove this watcher and all before it */ 4181 w_ = w_->next; /* lets us remove this watcher and all before it */
2920 4182
2921 if (w->wd == wd || wd == -1) 4183 if (w->wd == wd || wd == -1)
2922 { 4184 {
2923 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4185 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2924 { 4186 {
2925 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4187 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2926 w->wd = -1; 4188 w->wd = -1;
2927 infy_add (EV_A_ w); /* re-add, no matter what */ 4189 infy_add (EV_A_ w); /* re-add, no matter what */
2928 } 4190 }
2929 4191
2930 stat_timer_cb (EV_A_ &w->timer, 0); 4192 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2935 4197
2936static void 4198static void
2937infy_cb (EV_P_ ev_io *w, int revents) 4199infy_cb (EV_P_ ev_io *w, int revents)
2938{ 4200{
2939 char buf [EV_INOTIFY_BUFSIZE]; 4201 char buf [EV_INOTIFY_BUFSIZE];
2940 struct inotify_event *ev = (struct inotify_event *)buf;
2941 int ofs; 4202 int ofs;
2942 int len = read (fs_fd, buf, sizeof (buf)); 4203 int len = read (fs_fd, buf, sizeof (buf));
2943 4204
2944 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4205 for (ofs = 0; ofs < len; )
4206 {
4207 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2945 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4208 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4209 ofs += sizeof (struct inotify_event) + ev->len;
4210 }
2946} 4211}
2947 4212
2948inline_size void 4213inline_size void ecb_cold
2949check_2625 (EV_P) 4214ev_check_2625 (EV_P)
2950{ 4215{
2951 /* kernels < 2.6.25 are borked 4216 /* kernels < 2.6.25 are borked
2952 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4217 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2953 */ 4218 */
2954 struct utsname buf; 4219 if (ev_linux_version () < 0x020619)
2955 int major, minor, micro;
2956
2957 if (uname (&buf))
2958 return; 4220 return;
2959 4221
2960 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2961 return;
2962
2963 if (major < 2
2964 || (major == 2 && minor < 6)
2965 || (major == 2 && minor == 6 && micro < 25))
2966 return;
2967
2968 fs_2625 = 1; 4222 fs_2625 = 1;
4223}
4224
4225inline_size int
4226infy_newfd (void)
4227{
4228#if defined IN_CLOEXEC && defined IN_NONBLOCK
4229 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4230 if (fd >= 0)
4231 return fd;
4232#endif
4233 return inotify_init ();
2969} 4234}
2970 4235
2971inline_size void 4236inline_size void
2972infy_init (EV_P) 4237infy_init (EV_P)
2973{ 4238{
2974 if (fs_fd != -2) 4239 if (fs_fd != -2)
2975 return; 4240 return;
2976 4241
2977 fs_fd = -1; 4242 fs_fd = -1;
2978 4243
2979 check_2625 (EV_A); 4244 ev_check_2625 (EV_A);
2980 4245
2981 fs_fd = inotify_init (); 4246 fs_fd = infy_newfd ();
2982 4247
2983 if (fs_fd >= 0) 4248 if (fs_fd >= 0)
2984 { 4249 {
4250 fd_intern (fs_fd);
2985 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4251 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2986 ev_set_priority (&fs_w, EV_MAXPRI); 4252 ev_set_priority (&fs_w, EV_MAXPRI);
2987 ev_io_start (EV_A_ &fs_w); 4253 ev_io_start (EV_A_ &fs_w);
4254 ev_unref (EV_A);
2988 } 4255 }
2989} 4256}
2990 4257
2991inline_size void 4258inline_size void
2992infy_fork (EV_P) 4259infy_fork (EV_P)
… …
2994 int slot; 4261 int slot;
2995 4262
2996 if (fs_fd < 0) 4263 if (fs_fd < 0)
2997 return; 4264 return;
2998 4265
4266 ev_ref (EV_A);
4267 ev_io_stop (EV_A_ &fs_w);
2999 close (fs_fd); 4268 close (fs_fd);
3000 fs_fd = inotify_init (); 4269 fs_fd = infy_newfd ();
3001 4270
4271 if (fs_fd >= 0)
4272 {
4273 fd_intern (fs_fd);
4274 ev_io_set (&fs_w, fs_fd, EV_READ);
4275 ev_io_start (EV_A_ &fs_w);
4276 ev_unref (EV_A);
4277 }
4278
3002 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4279 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3003 { 4280 {
3004 WL w_ = fs_hash [slot].head; 4281 WL w_ = fs_hash [slot].head;
3005 fs_hash [slot].head = 0; 4282 fs_hash [slot].head = 0;
3006 4283
3007 while (w_) 4284 while (w_)
… …
3012 w->wd = -1; 4289 w->wd = -1;
3013 4290
3014 if (fs_fd >= 0) 4291 if (fs_fd >= 0)
3015 infy_add (EV_A_ w); /* re-add, no matter what */ 4292 infy_add (EV_A_ w); /* re-add, no matter what */
3016 else 4293 else
4294 {
4295 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4296 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3017 ev_timer_again (EV_A_ &w->timer); 4297 ev_timer_again (EV_A_ &w->timer);
4298 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4299 }
3018 } 4300 }
3019 } 4301 }
3020} 4302}
3021 4303
3022#endif 4304#endif
… …
3026#else 4308#else
3027# define EV_LSTAT(p,b) lstat (p, b) 4309# define EV_LSTAT(p,b) lstat (p, b)
3028#endif 4310#endif
3029 4311
3030void 4312void
3031ev_stat_stat (EV_P_ ev_stat *w) 4313ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3032{ 4314{
3033 if (lstat (w->path, &w->attr) < 0) 4315 if (lstat (w->path, &w->attr) < 0)
3034 w->attr.st_nlink = 0; 4316 w->attr.st_nlink = 0;
3035 else if (!w->attr.st_nlink) 4317 else if (!w->attr.st_nlink)
3036 w->attr.st_nlink = 1; 4318 w->attr.st_nlink = 1;
… …
3039static void noinline 4321static void noinline
3040stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4322stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3041{ 4323{
3042 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4324 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3043 4325
3044 /* we copy this here each the time so that */ 4326 ev_statdata prev = w->attr;
3045 /* prev has the old value when the callback gets invoked */
3046 w->prev = w->attr;
3047 ev_stat_stat (EV_A_ w); 4327 ev_stat_stat (EV_A_ w);
3048 4328
3049 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4329 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3050 if ( 4330 if (
3051 w->prev.st_dev != w->attr.st_dev 4331 prev.st_dev != w->attr.st_dev
3052 || w->prev.st_ino != w->attr.st_ino 4332 || prev.st_ino != w->attr.st_ino
3053 || w->prev.st_mode != w->attr.st_mode 4333 || prev.st_mode != w->attr.st_mode
3054 || w->prev.st_nlink != w->attr.st_nlink 4334 || prev.st_nlink != w->attr.st_nlink
3055 || w->prev.st_uid != w->attr.st_uid 4335 || prev.st_uid != w->attr.st_uid
3056 || w->prev.st_gid != w->attr.st_gid 4336 || prev.st_gid != w->attr.st_gid
3057 || w->prev.st_rdev != w->attr.st_rdev 4337 || prev.st_rdev != w->attr.st_rdev
3058 || w->prev.st_size != w->attr.st_size 4338 || prev.st_size != w->attr.st_size
3059 || w->prev.st_atime != w->attr.st_atime 4339 || prev.st_atime != w->attr.st_atime
3060 || w->prev.st_mtime != w->attr.st_mtime 4340 || prev.st_mtime != w->attr.st_mtime
3061 || w->prev.st_ctime != w->attr.st_ctime 4341 || prev.st_ctime != w->attr.st_ctime
3062 ) { 4342 ) {
4343 /* we only update w->prev on actual differences */
4344 /* in case we test more often than invoke the callback, */
4345 /* to ensure that prev is always different to attr */
4346 w->prev = prev;
4347
3063 #if EV_USE_INOTIFY 4348 #if EV_USE_INOTIFY
3064 if (fs_fd >= 0) 4349 if (fs_fd >= 0)
3065 { 4350 {
3066 infy_del (EV_A_ w); 4351 infy_del (EV_A_ w);
3067 infy_add (EV_A_ w); 4352 infy_add (EV_A_ w);
… …
3072 ev_feed_event (EV_A_ w, EV_STAT); 4357 ev_feed_event (EV_A_ w, EV_STAT);
3073 } 4358 }
3074} 4359}
3075 4360
3076void 4361void
3077ev_stat_start (EV_P_ ev_stat *w) 4362ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3078{ 4363{
3079 if (expect_false (ev_is_active (w))) 4364 if (expect_false (ev_is_active (w)))
3080 return; 4365 return;
3081 4366
3082 ev_stat_stat (EV_A_ w); 4367 ev_stat_stat (EV_A_ w);
… …
3092 4377
3093 if (fs_fd >= 0) 4378 if (fs_fd >= 0)
3094 infy_add (EV_A_ w); 4379 infy_add (EV_A_ w);
3095 else 4380 else
3096#endif 4381#endif
4382 {
3097 ev_timer_again (EV_A_ &w->timer); 4383 ev_timer_again (EV_A_ &w->timer);
4384 ev_unref (EV_A);
4385 }
3098 4386
3099 ev_start (EV_A_ (W)w, 1); 4387 ev_start (EV_A_ (W)w, 1);
3100 4388
3101 EV_FREQUENT_CHECK; 4389 EV_FREQUENT_CHECK;
3102} 4390}
3103 4391
3104void 4392void
3105ev_stat_stop (EV_P_ ev_stat *w) 4393ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3106{ 4394{
3107 clear_pending (EV_A_ (W)w); 4395 clear_pending (EV_A_ (W)w);
3108 if (expect_false (!ev_is_active (w))) 4396 if (expect_false (!ev_is_active (w)))
3109 return; 4397 return;
3110 4398
3111 EV_FREQUENT_CHECK; 4399 EV_FREQUENT_CHECK;
3112 4400
3113#if EV_USE_INOTIFY 4401#if EV_USE_INOTIFY
3114 infy_del (EV_A_ w); 4402 infy_del (EV_A_ w);
3115#endif 4403#endif
4404
4405 if (ev_is_active (&w->timer))
4406 {
4407 ev_ref (EV_A);
3116 ev_timer_stop (EV_A_ &w->timer); 4408 ev_timer_stop (EV_A_ &w->timer);
4409 }
3117 4410
3118 ev_stop (EV_A_ (W)w); 4411 ev_stop (EV_A_ (W)w);
3119 4412
3120 EV_FREQUENT_CHECK; 4413 EV_FREQUENT_CHECK;
3121} 4414}
3122#endif 4415#endif
3123 4416
3124#if EV_IDLE_ENABLE 4417#if EV_IDLE_ENABLE
3125void 4418void
3126ev_idle_start (EV_P_ ev_idle *w) 4419ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3127{ 4420{
3128 if (expect_false (ev_is_active (w))) 4421 if (expect_false (ev_is_active (w)))
3129 return; 4422 return;
3130 4423
3131 pri_adjust (EV_A_ (W)w); 4424 pri_adjust (EV_A_ (W)w);
… …
3144 4437
3145 EV_FREQUENT_CHECK; 4438 EV_FREQUENT_CHECK;
3146} 4439}
3147 4440
3148void 4441void
3149ev_idle_stop (EV_P_ ev_idle *w) 4442ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3150{ 4443{
3151 clear_pending (EV_A_ (W)w); 4444 clear_pending (EV_A_ (W)w);
3152 if (expect_false (!ev_is_active (w))) 4445 if (expect_false (!ev_is_active (w)))
3153 return; 4446 return;
3154 4447
… …
3166 4459
3167 EV_FREQUENT_CHECK; 4460 EV_FREQUENT_CHECK;
3168} 4461}
3169#endif 4462#endif
3170 4463
4464#if EV_PREPARE_ENABLE
3171void 4465void
3172ev_prepare_start (EV_P_ ev_prepare *w) 4466ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3173{ 4467{
3174 if (expect_false (ev_is_active (w))) 4468 if (expect_false (ev_is_active (w)))
3175 return; 4469 return;
3176 4470
3177 EV_FREQUENT_CHECK; 4471 EV_FREQUENT_CHECK;
… …
3182 4476
3183 EV_FREQUENT_CHECK; 4477 EV_FREQUENT_CHECK;
3184} 4478}
3185 4479
3186void 4480void
3187ev_prepare_stop (EV_P_ ev_prepare *w) 4481ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3188{ 4482{
3189 clear_pending (EV_A_ (W)w); 4483 clear_pending (EV_A_ (W)w);
3190 if (expect_false (!ev_is_active (w))) 4484 if (expect_false (!ev_is_active (w)))
3191 return; 4485 return;
3192 4486
… …
3201 4495
3202 ev_stop (EV_A_ (W)w); 4496 ev_stop (EV_A_ (W)w);
3203 4497
3204 EV_FREQUENT_CHECK; 4498 EV_FREQUENT_CHECK;
3205} 4499}
4500#endif
3206 4501
4502#if EV_CHECK_ENABLE
3207void 4503void
3208ev_check_start (EV_P_ ev_check *w) 4504ev_check_start (EV_P_ ev_check *w) EV_THROW
3209{ 4505{
3210 if (expect_false (ev_is_active (w))) 4506 if (expect_false (ev_is_active (w)))
3211 return; 4507 return;
3212 4508
3213 EV_FREQUENT_CHECK; 4509 EV_FREQUENT_CHECK;
… …
3218 4514
3219 EV_FREQUENT_CHECK; 4515 EV_FREQUENT_CHECK;
3220} 4516}
3221 4517
3222void 4518void
3223ev_check_stop (EV_P_ ev_check *w) 4519ev_check_stop (EV_P_ ev_check *w) EV_THROW
3224{ 4520{
3225 clear_pending (EV_A_ (W)w); 4521 clear_pending (EV_A_ (W)w);
3226 if (expect_false (!ev_is_active (w))) 4522 if (expect_false (!ev_is_active (w)))
3227 return; 4523 return;
3228 4524
… …
3237 4533
3238 ev_stop (EV_A_ (W)w); 4534 ev_stop (EV_A_ (W)w);
3239 4535
3240 EV_FREQUENT_CHECK; 4536 EV_FREQUENT_CHECK;
3241} 4537}
4538#endif
3242 4539
3243#if EV_EMBED_ENABLE 4540#if EV_EMBED_ENABLE
3244void noinline 4541void noinline
3245ev_embed_sweep (EV_P_ ev_embed *w) 4542ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3246{ 4543{
3247 ev_loop (w->other, EVLOOP_NONBLOCK); 4544 ev_run (w->other, EVRUN_NOWAIT);
3248} 4545}
3249 4546
3250static void 4547static void
3251embed_io_cb (EV_P_ ev_io *io, int revents) 4548embed_io_cb (EV_P_ ev_io *io, int revents)
3252{ 4549{
3253 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4550 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3254 4551
3255 if (ev_cb (w)) 4552 if (ev_cb (w))
3256 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4553 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3257 else 4554 else
3258 ev_loop (w->other, EVLOOP_NONBLOCK); 4555 ev_run (w->other, EVRUN_NOWAIT);
3259} 4556}
3260 4557
3261static void 4558static void
3262embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4559embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3263{ 4560{
… …
3267 EV_P = w->other; 4564 EV_P = w->other;
3268 4565
3269 while (fdchangecnt) 4566 while (fdchangecnt)
3270 { 4567 {
3271 fd_reify (EV_A); 4568 fd_reify (EV_A);
3272 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4569 ev_run (EV_A_ EVRUN_NOWAIT);
3273 } 4570 }
3274 } 4571 }
3275} 4572}
3276 4573
3277static void 4574static void
… …
3283 4580
3284 { 4581 {
3285 EV_P = w->other; 4582 EV_P = w->other;
3286 4583
3287 ev_loop_fork (EV_A); 4584 ev_loop_fork (EV_A);
3288 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4585 ev_run (EV_A_ EVRUN_NOWAIT);
3289 } 4586 }
3290 4587
3291 ev_embed_start (EV_A_ w); 4588 ev_embed_start (EV_A_ w);
3292} 4589}
3293 4590
… …
3298 ev_idle_stop (EV_A_ idle); 4595 ev_idle_stop (EV_A_ idle);
3299} 4596}
3300#endif 4597#endif
3301 4598
3302void 4599void
3303ev_embed_start (EV_P_ ev_embed *w) 4600ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3304{ 4601{
3305 if (expect_false (ev_is_active (w))) 4602 if (expect_false (ev_is_active (w)))
3306 return; 4603 return;
3307 4604
3308 { 4605 {
… …
3329 4626
3330 EV_FREQUENT_CHECK; 4627 EV_FREQUENT_CHECK;
3331} 4628}
3332 4629
3333void 4630void
3334ev_embed_stop (EV_P_ ev_embed *w) 4631ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3335{ 4632{
3336 clear_pending (EV_A_ (W)w); 4633 clear_pending (EV_A_ (W)w);
3337 if (expect_false (!ev_is_active (w))) 4634 if (expect_false (!ev_is_active (w)))
3338 return; 4635 return;
3339 4636
… …
3341 4638
3342 ev_io_stop (EV_A_ &w->io); 4639 ev_io_stop (EV_A_ &w->io);
3343 ev_prepare_stop (EV_A_ &w->prepare); 4640 ev_prepare_stop (EV_A_ &w->prepare);
3344 ev_fork_stop (EV_A_ &w->fork); 4641 ev_fork_stop (EV_A_ &w->fork);
3345 4642
4643 ev_stop (EV_A_ (W)w);
4644
3346 EV_FREQUENT_CHECK; 4645 EV_FREQUENT_CHECK;
3347} 4646}
3348#endif 4647#endif
3349 4648
3350#if EV_FORK_ENABLE 4649#if EV_FORK_ENABLE
3351void 4650void
3352ev_fork_start (EV_P_ ev_fork *w) 4651ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3353{ 4652{
3354 if (expect_false (ev_is_active (w))) 4653 if (expect_false (ev_is_active (w)))
3355 return; 4654 return;
3356 4655
3357 EV_FREQUENT_CHECK; 4656 EV_FREQUENT_CHECK;
… …
3362 4661
3363 EV_FREQUENT_CHECK; 4662 EV_FREQUENT_CHECK;
3364} 4663}
3365 4664
3366void 4665void
3367ev_fork_stop (EV_P_ ev_fork *w) 4666ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3368{ 4667{
3369 clear_pending (EV_A_ (W)w); 4668 clear_pending (EV_A_ (W)w);
3370 if (expect_false (!ev_is_active (w))) 4669 if (expect_false (!ev_is_active (w)))
3371 return; 4670 return;
3372 4671
… …
3383 4682
3384 EV_FREQUENT_CHECK; 4683 EV_FREQUENT_CHECK;
3385} 4684}
3386#endif 4685#endif
3387 4686
4687#if EV_CLEANUP_ENABLE
4688void
4689ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4690{
4691 if (expect_false (ev_is_active (w)))
4692 return;
4693
4694 EV_FREQUENT_CHECK;
4695
4696 ev_start (EV_A_ (W)w, ++cleanupcnt);
4697 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4698 cleanups [cleanupcnt - 1] = w;
4699
4700 /* cleanup watchers should never keep a refcount on the loop */
4701 ev_unref (EV_A);
4702 EV_FREQUENT_CHECK;
4703}
4704
4705void
4706ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4707{
4708 clear_pending (EV_A_ (W)w);
4709 if (expect_false (!ev_is_active (w)))
4710 return;
4711
4712 EV_FREQUENT_CHECK;
4713 ev_ref (EV_A);
4714
4715 {
4716 int active = ev_active (w);
4717
4718 cleanups [active - 1] = cleanups [--cleanupcnt];
4719 ev_active (cleanups [active - 1]) = active;
4720 }
4721
4722 ev_stop (EV_A_ (W)w);
4723
4724 EV_FREQUENT_CHECK;
4725}
4726#endif
4727
3388#if EV_ASYNC_ENABLE 4728#if EV_ASYNC_ENABLE
3389void 4729void
3390ev_async_start (EV_P_ ev_async *w) 4730ev_async_start (EV_P_ ev_async *w) EV_THROW
3391{ 4731{
3392 if (expect_false (ev_is_active (w))) 4732 if (expect_false (ev_is_active (w)))
3393 return; 4733 return;
4734
4735 w->sent = 0;
3394 4736
3395 evpipe_init (EV_A); 4737 evpipe_init (EV_A);
3396 4738
3397 EV_FREQUENT_CHECK; 4739 EV_FREQUENT_CHECK;
3398 4740
… …
3402 4744
3403 EV_FREQUENT_CHECK; 4745 EV_FREQUENT_CHECK;
3404} 4746}
3405 4747
3406void 4748void
3407ev_async_stop (EV_P_ ev_async *w) 4749ev_async_stop (EV_P_ ev_async *w) EV_THROW
3408{ 4750{
3409 clear_pending (EV_A_ (W)w); 4751 clear_pending (EV_A_ (W)w);
3410 if (expect_false (!ev_is_active (w))) 4752 if (expect_false (!ev_is_active (w)))
3411 return; 4753 return;
3412 4754
… …
3423 4765
3424 EV_FREQUENT_CHECK; 4766 EV_FREQUENT_CHECK;
3425} 4767}
3426 4768
3427void 4769void
3428ev_async_send (EV_P_ ev_async *w) 4770ev_async_send (EV_P_ ev_async *w) EV_THROW
3429{ 4771{
3430 w->sent = 1; 4772 w->sent = 1;
3431 evpipe_write (EV_A_ &async_pending); 4773 evpipe_write (EV_A_ &async_pending);
3432} 4774}
3433#endif 4775#endif
… …
3470 4812
3471 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4813 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3472} 4814}
3473 4815
3474void 4816void
3475ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4817ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3476{ 4818{
3477 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4819 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3478 4820
3479 if (expect_false (!once)) 4821 if (expect_false (!once))
3480 { 4822 {
3481 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4823 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3482 return; 4824 return;
3483 } 4825 }
3484 4826
3485 once->cb = cb; 4827 once->cb = cb;
3486 once->arg = arg; 4828 once->arg = arg;
… …
3501} 4843}
3502 4844
3503/*****************************************************************************/ 4845/*****************************************************************************/
3504 4846
3505#if EV_WALK_ENABLE 4847#if EV_WALK_ENABLE
3506void 4848void ecb_cold
3507ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4849ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3508{ 4850{
3509 int i, j; 4851 int i, j;
3510 ev_watcher_list *wl, *wn; 4852 ev_watcher_list *wl, *wn;
3511 4853
3512 if (types & (EV_IO | EV_EMBED)) 4854 if (types & (EV_IO | EV_EMBED))
… …
3555 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4897 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3556#endif 4898#endif
3557 4899
3558#if EV_IDLE_ENABLE 4900#if EV_IDLE_ENABLE
3559 if (types & EV_IDLE) 4901 if (types & EV_IDLE)
3560 for (j = NUMPRI; i--; ) 4902 for (j = NUMPRI; j--; )
3561 for (i = idlecnt [j]; i--; ) 4903 for (i = idlecnt [j]; i--; )
3562 cb (EV_A_ EV_IDLE, idles [j][i]); 4904 cb (EV_A_ EV_IDLE, idles [j][i]);
3563#endif 4905#endif
3564 4906
3565#if EV_FORK_ENABLE 4907#if EV_FORK_ENABLE
… …
3573 if (types & EV_ASYNC) 4915 if (types & EV_ASYNC)
3574 for (i = asynccnt; i--; ) 4916 for (i = asynccnt; i--; )
3575 cb (EV_A_ EV_ASYNC, asyncs [i]); 4917 cb (EV_A_ EV_ASYNC, asyncs [i]);
3576#endif 4918#endif
3577 4919
4920#if EV_PREPARE_ENABLE
3578 if (types & EV_PREPARE) 4921 if (types & EV_PREPARE)
3579 for (i = preparecnt; i--; ) 4922 for (i = preparecnt; i--; )
3580#if EV_EMBED_ENABLE 4923# if EV_EMBED_ENABLE
3581 if (ev_cb (prepares [i]) != embed_prepare_cb) 4924 if (ev_cb (prepares [i]) != embed_prepare_cb)
3582#endif 4925# endif
3583 cb (EV_A_ EV_PREPARE, prepares [i]); 4926 cb (EV_A_ EV_PREPARE, prepares [i]);
4927#endif
3584 4928
4929#if EV_CHECK_ENABLE
3585 if (types & EV_CHECK) 4930 if (types & EV_CHECK)
3586 for (i = checkcnt; i--; ) 4931 for (i = checkcnt; i--; )
3587 cb (EV_A_ EV_CHECK, checks [i]); 4932 cb (EV_A_ EV_CHECK, checks [i]);
4933#endif
3588 4934
4935#if EV_SIGNAL_ENABLE
3589 if (types & EV_SIGNAL) 4936 if (types & EV_SIGNAL)
3590 for (i = 0; i < EV_NSIG - 1; ++i) 4937 for (i = 0; i < EV_NSIG - 1; ++i)
3591 for (wl = signals [i].head; wl; ) 4938 for (wl = signals [i].head; wl; )
3592 { 4939 {
3593 wn = wl->next; 4940 wn = wl->next;
3594 cb (EV_A_ EV_SIGNAL, wl); 4941 cb (EV_A_ EV_SIGNAL, wl);
3595 wl = wn; 4942 wl = wn;
3596 } 4943 }
4944#endif
3597 4945
4946#if EV_CHILD_ENABLE
3598 if (types & EV_CHILD) 4947 if (types & EV_CHILD)
3599 for (i = EV_PID_HASHSIZE; i--; ) 4948 for (i = (EV_PID_HASHSIZE); i--; )
3600 for (wl = childs [i]; wl; ) 4949 for (wl = childs [i]; wl; )
3601 { 4950 {
3602 wn = wl->next; 4951 wn = wl->next;
3603 cb (EV_A_ EV_CHILD, wl); 4952 cb (EV_A_ EV_CHILD, wl);
3604 wl = wn; 4953 wl = wn;
3605 } 4954 }
4955#endif
3606/* EV_STAT 0x00001000 /* stat data changed */ 4956/* EV_STAT 0x00001000 /* stat data changed */
3607/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4957/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3608} 4958}
3609#endif 4959#endif
3610 4960
3611#if EV_MULTIPLICITY 4961#if EV_MULTIPLICITY
3612 #include "ev_wrap.h" 4962 #include "ev_wrap.h"
3613#endif 4963#endif
3614 4964
3615#ifdef __cplusplus
3616}
3617#endif
3618

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