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Comparing libev/ev.c (file contents):
Revision 1.307 by root, Sun Jul 19 07:20:41 2009 UTC vs.
Revision 1.469 by root, Fri Sep 5 16:21:19 2014 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 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
226#ifndef EV_USE_MONOTONIC 261#ifndef EV_USE_MONOTONIC
227# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 262# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
228# define EV_USE_MONOTONIC 1 263# define EV_USE_MONOTONIC EV_FEATURE_OS
229# else 264# else
230# define EV_USE_MONOTONIC 0 265# define EV_USE_MONOTONIC 0
231# endif 266# endif
232#endif 267#endif
233 268
… …
235# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 270# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
236#endif 271#endif
237 272
238#ifndef EV_USE_NANOSLEEP 273#ifndef EV_USE_NANOSLEEP
239# if _POSIX_C_SOURCE >= 199309L 274# if _POSIX_C_SOURCE >= 199309L
240# define EV_USE_NANOSLEEP 1 275# define EV_USE_NANOSLEEP EV_FEATURE_OS
241# else 276# else
242# define EV_USE_NANOSLEEP 0 277# define EV_USE_NANOSLEEP 0
243# endif 278# endif
244#endif 279#endif
245 280
246#ifndef EV_USE_SELECT 281#ifndef EV_USE_SELECT
247# define EV_USE_SELECT 1 282# define EV_USE_SELECT EV_FEATURE_BACKENDS
248#endif 283#endif
249 284
250#ifndef EV_USE_POLL 285#ifndef EV_USE_POLL
251# ifdef _WIN32 286# ifdef _WIN32
252# define EV_USE_POLL 0 287# define EV_USE_POLL 0
253# else 288# else
254# define EV_USE_POLL 1 289# define EV_USE_POLL EV_FEATURE_BACKENDS
255# endif 290# endif
256#endif 291#endif
257 292
258#ifndef EV_USE_EPOLL 293#ifndef EV_USE_EPOLL
259# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
260# define EV_USE_EPOLL 1 295# define EV_USE_EPOLL EV_FEATURE_BACKENDS
261# else 296# else
262# define EV_USE_EPOLL 0 297# define EV_USE_EPOLL 0
263# endif 298# endif
264#endif 299#endif
265 300
… …
271# define EV_USE_PORT 0 306# define EV_USE_PORT 0
272#endif 307#endif
273 308
274#ifndef EV_USE_INOTIFY 309#ifndef EV_USE_INOTIFY
275# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
276# define EV_USE_INOTIFY 1 311# define EV_USE_INOTIFY EV_FEATURE_OS
277# else 312# else
278# define EV_USE_INOTIFY 0 313# define EV_USE_INOTIFY 0
279# endif 314# endif
280#endif 315#endif
281 316
282#ifndef EV_PID_HASHSIZE 317#ifndef EV_PID_HASHSIZE
283# if EV_MINIMAL 318# 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 319#endif
289 320
290#ifndef EV_INOTIFY_HASHSIZE 321#ifndef EV_INOTIFY_HASHSIZE
291# if EV_MINIMAL 322# 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 323#endif
297 324
298#ifndef EV_USE_EVENTFD 325#ifndef EV_USE_EVENTFD
299# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 326# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
300# define EV_USE_EVENTFD 1 327# define EV_USE_EVENTFD EV_FEATURE_OS
301# else 328# else
302# define EV_USE_EVENTFD 0 329# define EV_USE_EVENTFD 0
303# endif 330# endif
304#endif 331#endif
305 332
306#ifndef EV_USE_SIGNALFD 333#ifndef EV_USE_SIGNALFD
307# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 334# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
308# define EV_USE_SIGNALFD 1 335# define EV_USE_SIGNALFD EV_FEATURE_OS
309# else 336# else
310# define EV_USE_SIGNALFD 0 337# define EV_USE_SIGNALFD 0
311# endif 338# endif
312#endif 339#endif
313 340
… …
316# define EV_USE_4HEAP 1 343# define EV_USE_4HEAP 1
317# define EV_HEAP_CACHE_AT 1 344# define EV_HEAP_CACHE_AT 1
318#endif 345#endif
319 346
320#ifndef EV_VERIFY 347#ifndef EV_VERIFY
321# define EV_VERIFY !EV_MINIMAL 348# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
322#endif 349#endif
323 350
324#ifndef EV_USE_4HEAP 351#ifndef EV_USE_4HEAP
325# define EV_USE_4HEAP !EV_MINIMAL 352# define EV_USE_4HEAP EV_FEATURE_DATA
326#endif 353#endif
327 354
328#ifndef EV_HEAP_CACHE_AT 355#ifndef EV_HEAP_CACHE_AT
329# define EV_HEAP_CACHE_AT !EV_MINIMAL 356# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
357#endif
358
359#ifdef ANDROID
360/* supposedly, android doesn't typedef fd_mask */
361# undef EV_USE_SELECT
362# define EV_USE_SELECT 0
363/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
364# undef EV_USE_CLOCK_SYSCALL
365# define EV_USE_CLOCK_SYSCALL 0
366#endif
367
368/* aix's poll.h seems to cause lots of trouble */
369#ifdef _AIX
370/* AIX has a completely broken poll.h header */
371# undef EV_USE_POLL
372# define EV_USE_POLL 0
330#endif 373#endif
331 374
332/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 375/* 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. */ 376/* which makes programs even slower. might work on other unices, too. */
334#if EV_USE_CLOCK_SYSCALL 377#if EV_USE_CLOCK_SYSCALL
335# include <syscall.h> 378# include <sys/syscall.h>
336# ifdef SYS_clock_gettime 379# ifdef SYS_clock_gettime
337# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 380# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
338# undef EV_USE_MONOTONIC 381# undef EV_USE_MONOTONIC
339# define EV_USE_MONOTONIC 1 382# define EV_USE_MONOTONIC 1
340# else 383# else
… …
359# undef EV_USE_INOTIFY 402# undef EV_USE_INOTIFY
360# define EV_USE_INOTIFY 0 403# define EV_USE_INOTIFY 0
361#endif 404#endif
362 405
363#if !EV_USE_NANOSLEEP 406#if !EV_USE_NANOSLEEP
364# ifndef _WIN32 407/* hp-ux has it in sys/time.h, which we unconditionally include above */
408# if !defined _WIN32 && !defined __hpux
365# include <sys/select.h> 409# include <sys/select.h>
366# endif 410# endif
367#endif 411#endif
368 412
369#if EV_USE_INOTIFY 413#if EV_USE_INOTIFY
370# include <sys/utsname.h>
371# include <sys/statfs.h> 414# include <sys/statfs.h>
372# include <sys/inotify.h> 415# include <sys/inotify.h>
373/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 416/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
374# ifndef IN_DONT_FOLLOW 417# ifndef IN_DONT_FOLLOW
375# undef EV_USE_INOTIFY 418# undef EV_USE_INOTIFY
376# define EV_USE_INOTIFY 0 419# define EV_USE_INOTIFY 0
377# endif 420# endif
378#endif 421#endif
379 422
380#if EV_SELECT_IS_WINSOCKET
381# include <winsock.h>
382#endif
383
384#if EV_USE_EVENTFD 423#if EV_USE_EVENTFD
385/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 424/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
386# include <stdint.h> 425# include <stdint.h>
387# ifndef EFD_NONBLOCK 426# ifndef EFD_NONBLOCK
388# define EFD_NONBLOCK O_NONBLOCK 427# define EFD_NONBLOCK O_NONBLOCK
389# endif 428# endif
390# ifndef EFD_CLOEXEC 429# ifndef EFD_CLOEXEC
430# ifdef O_CLOEXEC
391# define EFD_CLOEXEC O_CLOEXEC 431# define EFD_CLOEXEC O_CLOEXEC
432# else
433# define EFD_CLOEXEC 02000000
434# endif
392# endif 435# endif
393# ifdef __cplusplus 436EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
394extern "C" { 437#endif
438
439#if EV_USE_SIGNALFD
440/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
441# include <stdint.h>
442# ifndef SFD_NONBLOCK
443# define SFD_NONBLOCK O_NONBLOCK
395# endif 444# endif
396int eventfd (unsigned int initval, int flags); 445# ifndef SFD_CLOEXEC
397# ifdef __cplusplus 446# ifdef O_CLOEXEC
398} 447# define SFD_CLOEXEC O_CLOEXEC
448# else
449# define SFD_CLOEXEC 02000000
450# endif
399# endif 451# endif
400#endif 452EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
401 453
402#if EV_USE_SIGNALFD 454struct signalfd_siginfo
403# include <sys/signalfd.h> 455{
456 uint32_t ssi_signo;
457 char pad[128 - sizeof (uint32_t)];
458};
404#endif 459#endif
405 460
406/**/ 461/**/
407 462
408#if EV_VERIFY >= 3 463#if EV_VERIFY >= 3
409# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 464# define EV_FREQUENT_CHECK ev_verify (EV_A)
410#else 465#else
411# define EV_FREQUENT_CHECK do { } while (0) 466# define EV_FREQUENT_CHECK do { } while (0)
412#endif 467#endif
413 468
414/* 469/*
415 * This is used to avoid floating point rounding problems. 470 * This is used to work around floating point rounding problems.
416 * It is added to ev_rt_now when scheduling periodics
417 * to ensure progress, time-wise, even when rounding
418 * errors are against us.
419 * This value is good at least till the year 4000. 471 * This value is good at least till the year 4000.
420 * Better solutions welcome.
421 */ 472 */
422#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 473#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
474/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
423 475
424#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 476#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
425#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 477#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
426/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
427 478
479#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
480#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
481
482/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
483/* ECB.H BEGIN */
484/*
485 * libecb - http://software.schmorp.de/pkg/libecb
486 *
487 * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de>
488 * Copyright (©) 2011 Emanuele Giaquinta
489 * All rights reserved.
490 *
491 * Redistribution and use in source and binary forms, with or without modifica-
492 * tion, are permitted provided that the following conditions are met:
493 *
494 * 1. Redistributions of source code must retain the above copyright notice,
495 * this list of conditions and the following disclaimer.
496 *
497 * 2. Redistributions in binary form must reproduce the above copyright
498 * notice, this list of conditions and the following disclaimer in the
499 * documentation and/or other materials provided with the distribution.
500 *
501 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
502 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
503 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
504 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
505 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
506 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
507 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
508 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
509 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
510 * OF THE POSSIBILITY OF SUCH DAMAGE.
511 *
512 * Alternatively, the contents of this file may be used under the terms of
513 * the GNU General Public License ("GPL") version 2 or any later version,
514 * in which case the provisions of the GPL are applicable instead of
515 * the above. If you wish to allow the use of your version of this file
516 * only under the terms of the GPL and not to allow others to use your
517 * version of this file under the BSD license, indicate your decision
518 * by deleting the provisions above and replace them with the notice
519 * and other provisions required by the GPL. If you do not delete the
520 * provisions above, a recipient may use your version of this file under
521 * either the BSD or the GPL.
522 */
523
524#ifndef ECB_H
525#define ECB_H
526
527/* 16 bits major, 16 bits minor */
528#define ECB_VERSION 0x00010003
529
530#ifdef _WIN32
531 typedef signed char int8_t;
532 typedef unsigned char uint8_t;
533 typedef signed short int16_t;
534 typedef unsigned short uint16_t;
535 typedef signed int int32_t;
536 typedef unsigned int uint32_t;
428#if __GNUC__ >= 4 537 #if __GNUC__
429# define expect(expr,value) __builtin_expect ((expr),(value)) 538 typedef signed long long int64_t;
430# define noinline __attribute__ ((noinline)) 539 typedef unsigned long long uint64_t;
540 #else /* _MSC_VER || __BORLANDC__ */
541 typedef signed __int64 int64_t;
542 typedef unsigned __int64 uint64_t;
543 #endif
544 #ifdef _WIN64
545 #define ECB_PTRSIZE 8
546 typedef uint64_t uintptr_t;
547 typedef int64_t intptr_t;
548 #else
549 #define ECB_PTRSIZE 4
550 typedef uint32_t uintptr_t;
551 typedef int32_t intptr_t;
552 #endif
431#else 553#else
432# define expect(expr,value) (expr) 554 #include <inttypes.h>
433# define noinline 555 #if UINTMAX_MAX > 0xffffffffU
434# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 556 #define ECB_PTRSIZE 8
435# define inline 557 #else
558 #define ECB_PTRSIZE 4
559 #endif
436# endif 560#endif
561
562/* work around x32 idiocy by defining proper macros */
563#if __amd64 || __x86_64 || _M_AMD64 || _M_X64
564 #if _ILP32
565 #define ECB_AMD64_X32 1
566 #else
567 #define ECB_AMD64 1
437#endif 568 #endif
569#endif
438 570
571/* many compilers define _GNUC_ to some versions but then only implement
572 * what their idiot authors think are the "more important" extensions,
573 * causing enormous grief in return for some better fake benchmark numbers.
574 * or so.
575 * we try to detect these and simply assume they are not gcc - if they have
576 * an issue with that they should have done it right in the first place.
577 */
578#ifndef ECB_GCC_VERSION
579 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
580 #define ECB_GCC_VERSION(major,minor) 0
581 #else
582 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
583 #endif
584#endif
585
586#define ECB_CPP (__cplusplus+0)
587#define ECB_CPP11 (__cplusplus >= 201103L)
588
589#if ECB_CPP
590 #define ECB_C 0
591 #define ECB_STDC_VERSION 0
592#else
593 #define ECB_C 1
594 #define ECB_STDC_VERSION __STDC_VERSION__
595#endif
596
597#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
598#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
599
600#if ECB_CPP
601 #define ECB_EXTERN_C extern "C"
602 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
603 #define ECB_EXTERN_C_END }
604#else
605 #define ECB_EXTERN_C extern
606 #define ECB_EXTERN_C_BEG
607 #define ECB_EXTERN_C_END
608#endif
609
610/*****************************************************************************/
611
612/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
613/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
614
615#if ECB_NO_THREADS
616 #define ECB_NO_SMP 1
617#endif
618
619#if ECB_NO_SMP
620 #define ECB_MEMORY_FENCE do { } while (0)
621#endif
622
623#ifndef ECB_MEMORY_FENCE
624 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
625 #if __i386 || __i386__
626 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
627 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
629 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
631 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
632 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
633 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
634 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
635 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
636 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
637 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
638 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
639 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
640 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
641 #elif __aarch64__
642 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
643 #elif (__sparc || __sparc__) && !__sparcv8
644 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
645 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
646 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
647 #elif defined __s390__ || defined __s390x__
648 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
649 #elif defined __mips__
650 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
651 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
652 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
653 #elif defined __alpha__
654 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
655 #elif defined __hppa__
656 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
657 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
658 #elif defined __ia64__
659 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
660 #elif defined __m68k__
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
662 #elif defined __m88k__
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
664 #elif defined __sh__
665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
666 #endif
667 #endif
668#endif
669
670#ifndef ECB_MEMORY_FENCE
671 #if ECB_GCC_VERSION(4,7)
672 /* see comment below (stdatomic.h) about the C11 memory model. */
673 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
674 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
675 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
676
677 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
678 * without risking compile time errors with other compilers. We *could*
679 * define our own ecb_clang_has_feature, but I just can't be bothered to work
680 * around this shit time and again.
681 * #elif defined __clang && __has_feature (cxx_atomic)
682 * // see comment below (stdatomic.h) about the C11 memory model.
683 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
684 * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
685 * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
686 */
687
688 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
689 #define ECB_MEMORY_FENCE __sync_synchronize ()
690 #elif _MSC_VER >= 1500 /* VC++ 2008 */
691 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
692 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
693 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
694 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
695 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
696 #elif _MSC_VER >= 1400 /* VC++ 2005 */
697 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
698 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
699 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
700 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
701 #elif defined _WIN32
702 #include <WinNT.h>
703 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
704 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
705 #include <mbarrier.h>
706 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
707 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
708 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
709 #elif __xlC__
710 #define ECB_MEMORY_FENCE __sync ()
711 #endif
712#endif
713
714#ifndef ECB_MEMORY_FENCE
715 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
716 /* we assume that these memory fences work on all variables/all memory accesses, */
717 /* not just C11 atomics and atomic accesses */
718 #include <stdatomic.h>
719 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
720 /* any fence other than seq_cst, which isn't very efficient for us. */
721 /* Why that is, we don't know - either the C11 memory model is quite useless */
722 /* for most usages, or gcc and clang have a bug */
723 /* I *currently* lean towards the latter, and inefficiently implement */
724 /* all three of ecb's fences as a seq_cst fence */
725 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
726 /* for all __atomic_thread_fence's except seq_cst */
727 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
728 #endif
729#endif
730
731#ifndef ECB_MEMORY_FENCE
732 #if !ECB_AVOID_PTHREADS
733 /*
734 * if you get undefined symbol references to pthread_mutex_lock,
735 * or failure to find pthread.h, then you should implement
736 * the ECB_MEMORY_FENCE operations for your cpu/compiler
737 * OR provide pthread.h and link against the posix thread library
738 * of your system.
739 */
740 #include <pthread.h>
741 #define ECB_NEEDS_PTHREADS 1
742 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
743
744 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
745 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
746 #endif
747#endif
748
749#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
750 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
751#endif
752
753#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
754 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
755#endif
756
757/*****************************************************************************/
758
759#if __cplusplus
760 #define ecb_inline static inline
761#elif ECB_GCC_VERSION(2,5)
762 #define ecb_inline static __inline__
763#elif ECB_C99
764 #define ecb_inline static inline
765#else
766 #define ecb_inline static
767#endif
768
769#if ECB_GCC_VERSION(3,3)
770 #define ecb_restrict __restrict__
771#elif ECB_C99
772 #define ecb_restrict restrict
773#else
774 #define ecb_restrict
775#endif
776
777typedef int ecb_bool;
778
779#define ECB_CONCAT_(a, b) a ## b
780#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
781#define ECB_STRINGIFY_(a) # a
782#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
783
784#define ecb_function_ ecb_inline
785
786#if ECB_GCC_VERSION(3,1)
787 #define ecb_attribute(attrlist) __attribute__(attrlist)
788 #define ecb_is_constant(expr) __builtin_constant_p (expr)
789 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
790 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
791#else
792 #define ecb_attribute(attrlist)
793
794 /* possible C11 impl for integral types
795 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
796 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
797
798 #define ecb_is_constant(expr) 0
799 #define ecb_expect(expr,value) (expr)
800 #define ecb_prefetch(addr,rw,locality)
801#endif
802
803/* no emulation for ecb_decltype */
804#if ECB_GCC_VERSION(4,5)
805 #define ecb_decltype(x) __decltype(x)
806#elif ECB_GCC_VERSION(3,0)
807 #define ecb_decltype(x) __typeof(x)
808#endif
809
810#if _MSC_VER >= 1300
811 #define ecb_deprecated __declspec(deprecated)
812#else
813 #define ecb_deprecated ecb_attribute ((__deprecated__))
814#endif
815
816#define ecb_noinline ecb_attribute ((__noinline__))
817#define ecb_unused ecb_attribute ((__unused__))
818#define ecb_const ecb_attribute ((__const__))
819#define ecb_pure ecb_attribute ((__pure__))
820
821/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */
822#if ECB_C11
823 #define ecb_noreturn _Noreturn
824#else
825 #define ecb_noreturn ecb_attribute ((__noreturn__))
826#endif
827
828#if ECB_GCC_VERSION(4,3)
829 #define ecb_artificial ecb_attribute ((__artificial__))
830 #define ecb_hot ecb_attribute ((__hot__))
831 #define ecb_cold ecb_attribute ((__cold__))
832#else
833 #define ecb_artificial
834 #define ecb_hot
835 #define ecb_cold
836#endif
837
838/* put around conditional expressions if you are very sure that the */
839/* expression is mostly true or mostly false. note that these return */
840/* booleans, not the expression. */
439#define expect_false(expr) expect ((expr) != 0, 0) 841#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
440#define expect_true(expr) expect ((expr) != 0, 1) 842#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
843/* for compatibility to the rest of the world */
844#define ecb_likely(expr) ecb_expect_true (expr)
845#define ecb_unlikely(expr) ecb_expect_false (expr)
846
847/* count trailing zero bits and count # of one bits */
848#if ECB_GCC_VERSION(3,4)
849 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
850 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
851 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
852 #define ecb_ctz32(x) __builtin_ctz (x)
853 #define ecb_ctz64(x) __builtin_ctzll (x)
854 #define ecb_popcount32(x) __builtin_popcount (x)
855 /* no popcountll */
856#else
857 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
858 ecb_function_ int
859 ecb_ctz32 (uint32_t x)
860 {
861 int r = 0;
862
863 x &= ~x + 1; /* this isolates the lowest bit */
864
865#if ECB_branchless_on_i386
866 r += !!(x & 0xaaaaaaaa) << 0;
867 r += !!(x & 0xcccccccc) << 1;
868 r += !!(x & 0xf0f0f0f0) << 2;
869 r += !!(x & 0xff00ff00) << 3;
870 r += !!(x & 0xffff0000) << 4;
871#else
872 if (x & 0xaaaaaaaa) r += 1;
873 if (x & 0xcccccccc) r += 2;
874 if (x & 0xf0f0f0f0) r += 4;
875 if (x & 0xff00ff00) r += 8;
876 if (x & 0xffff0000) r += 16;
877#endif
878
879 return r;
880 }
881
882 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
883 ecb_function_ int
884 ecb_ctz64 (uint64_t x)
885 {
886 int shift = x & 0xffffffffU ? 0 : 32;
887 return ecb_ctz32 (x >> shift) + shift;
888 }
889
890 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
891 ecb_function_ int
892 ecb_popcount32 (uint32_t x)
893 {
894 x -= (x >> 1) & 0x55555555;
895 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
896 x = ((x >> 4) + x) & 0x0f0f0f0f;
897 x *= 0x01010101;
898
899 return x >> 24;
900 }
901
902 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
903 ecb_function_ int ecb_ld32 (uint32_t x)
904 {
905 int r = 0;
906
907 if (x >> 16) { x >>= 16; r += 16; }
908 if (x >> 8) { x >>= 8; r += 8; }
909 if (x >> 4) { x >>= 4; r += 4; }
910 if (x >> 2) { x >>= 2; r += 2; }
911 if (x >> 1) { r += 1; }
912
913 return r;
914 }
915
916 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
917 ecb_function_ int ecb_ld64 (uint64_t x)
918 {
919 int r = 0;
920
921 if (x >> 32) { x >>= 32; r += 32; }
922
923 return r + ecb_ld32 (x);
924 }
925#endif
926
927ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
928ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
929ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
930ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
931
932ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
933ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
934{
935 return ( (x * 0x0802U & 0x22110U)
936 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
937}
938
939ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
940ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
941{
942 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
943 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
944 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
945 x = ( x >> 8 ) | ( x << 8);
946
947 return x;
948}
949
950ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
951ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
952{
953 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
954 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
955 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
956 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
957 x = ( x >> 16 ) | ( x << 16);
958
959 return x;
960}
961
962/* popcount64 is only available on 64 bit cpus as gcc builtin */
963/* so for this version we are lazy */
964ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
965ecb_function_ int
966ecb_popcount64 (uint64_t x)
967{
968 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
969}
970
971ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
972ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
973ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
974ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
975ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
976ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
977ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
978ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
979
980ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
981ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
982ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
983ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
984ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
985ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
986ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
987ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
988
989#if ECB_GCC_VERSION(4,3)
990 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
991 #define ecb_bswap32(x) __builtin_bswap32 (x)
992 #define ecb_bswap64(x) __builtin_bswap64 (x)
993#else
994 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
995 ecb_function_ uint16_t
996 ecb_bswap16 (uint16_t x)
997 {
998 return ecb_rotl16 (x, 8);
999 }
1000
1001 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
1002 ecb_function_ uint32_t
1003 ecb_bswap32 (uint32_t x)
1004 {
1005 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1006 }
1007
1008 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
1009 ecb_function_ uint64_t
1010 ecb_bswap64 (uint64_t x)
1011 {
1012 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1013 }
1014#endif
1015
1016#if ECB_GCC_VERSION(4,5)
1017 #define ecb_unreachable() __builtin_unreachable ()
1018#else
1019 /* this seems to work fine, but gcc always emits a warning for it :/ */
1020 ecb_inline void ecb_unreachable (void) ecb_noreturn;
1021 ecb_inline void ecb_unreachable (void) { }
1022#endif
1023
1024/* try to tell the compiler that some condition is definitely true */
1025#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1026
1027ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
1028ecb_inline unsigned char
1029ecb_byteorder_helper (void)
1030{
1031 /* the union code still generates code under pressure in gcc, */
1032 /* but less than using pointers, and always seems to */
1033 /* successfully return a constant. */
1034 /* the reason why we have this horrible preprocessor mess */
1035 /* is to avoid it in all cases, at least on common architectures */
1036 /* or when using a recent enough gcc version (>= 4.6) */
1037#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1038 return 0x44;
1039#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1040 return 0x44;
1041#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1042 return 0x11;
1043#else
1044 union
1045 {
1046 uint32_t i;
1047 uint8_t c;
1048 } u = { 0x11223344 };
1049 return u.c;
1050#endif
1051}
1052
1053ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1054ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1055ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1056ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1057
1058#if ECB_GCC_VERSION(3,0) || ECB_C99
1059 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1060#else
1061 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1062#endif
1063
1064#if __cplusplus
1065 template<typename T>
1066 static inline T ecb_div_rd (T val, T div)
1067 {
1068 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1069 }
1070 template<typename T>
1071 static inline T ecb_div_ru (T val, T div)
1072 {
1073 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1074 }
1075#else
1076 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1077 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1078#endif
1079
1080#if ecb_cplusplus_does_not_suck
1081 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1082 template<typename T, int N>
1083 static inline int ecb_array_length (const T (&arr)[N])
1084 {
1085 return N;
1086 }
1087#else
1088 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1089#endif
1090
1091/*******************************************************************************/
1092/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1093
1094/* basically, everything uses "ieee pure-endian" floating point numbers */
1095/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1096#if 0 \
1097 || __i386 || __i386__ \
1098 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1099 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1100 || defined __s390__ || defined __s390x__ \
1101 || defined __mips__ \
1102 || defined __alpha__ \
1103 || defined __hppa__ \
1104 || defined __ia64__ \
1105 || defined __m68k__ \
1106 || defined __m88k__ \
1107 || defined __sh__ \
1108 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \
1109 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1110 || defined __aarch64__
1111 #define ECB_STDFP 1
1112 #include <string.h> /* for memcpy */
1113#else
1114 #define ECB_STDFP 0
1115#endif
1116
1117#ifndef ECB_NO_LIBM
1118
1119 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1120
1121 /* only the oldest of old doesn't have this one. solaris. */
1122 #ifdef INFINITY
1123 #define ECB_INFINITY INFINITY
1124 #else
1125 #define ECB_INFINITY HUGE_VAL
1126 #endif
1127
1128 #ifdef NAN
1129 #define ECB_NAN NAN
1130 #else
1131 #define ECB_NAN ECB_INFINITY
1132 #endif
1133
1134 /* converts an ieee half/binary16 to a float */
1135 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1136 ecb_function_ float
1137 ecb_binary16_to_float (uint16_t x)
1138 {
1139 int e = (x >> 10) & 0x1f;
1140 int m = x & 0x3ff;
1141 float r;
1142
1143 if (!e ) r = ldexpf (m , -24);
1144 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1145 else if (m ) r = ECB_NAN;
1146 else r = ECB_INFINITY;
1147
1148 return x & 0x8000 ? -r : r;
1149 }
1150
1151 /* convert a float to ieee single/binary32 */
1152 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1153 ecb_function_ uint32_t
1154 ecb_float_to_binary32 (float x)
1155 {
1156 uint32_t r;
1157
1158 #if ECB_STDFP
1159 memcpy (&r, &x, 4);
1160 #else
1161 /* slow emulation, works for anything but -0 */
1162 uint32_t m;
1163 int e;
1164
1165 if (x == 0e0f ) return 0x00000000U;
1166 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1167 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1168 if (x != x ) return 0x7fbfffffU;
1169
1170 m = frexpf (x, &e) * 0x1000000U;
1171
1172 r = m & 0x80000000U;
1173
1174 if (r)
1175 m = -m;
1176
1177 if (e <= -126)
1178 {
1179 m &= 0xffffffU;
1180 m >>= (-125 - e);
1181 e = -126;
1182 }
1183
1184 r |= (e + 126) << 23;
1185 r |= m & 0x7fffffU;
1186 #endif
1187
1188 return r;
1189 }
1190
1191 /* converts an ieee single/binary32 to a float */
1192 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1193 ecb_function_ float
1194 ecb_binary32_to_float (uint32_t x)
1195 {
1196 float r;
1197
1198 #if ECB_STDFP
1199 memcpy (&r, &x, 4);
1200 #else
1201 /* emulation, only works for normals and subnormals and +0 */
1202 int neg = x >> 31;
1203 int e = (x >> 23) & 0xffU;
1204
1205 x &= 0x7fffffU;
1206
1207 if (e)
1208 x |= 0x800000U;
1209 else
1210 e = 1;
1211
1212 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1213 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1214
1215 r = neg ? -r : r;
1216 #endif
1217
1218 return r;
1219 }
1220
1221 /* convert a double to ieee double/binary64 */
1222 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1223 ecb_function_ uint64_t
1224 ecb_double_to_binary64 (double x)
1225 {
1226 uint64_t r;
1227
1228 #if ECB_STDFP
1229 memcpy (&r, &x, 8);
1230 #else
1231 /* slow emulation, works for anything but -0 */
1232 uint64_t m;
1233 int e;
1234
1235 if (x == 0e0 ) return 0x0000000000000000U;
1236 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1237 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1238 if (x != x ) return 0X7ff7ffffffffffffU;
1239
1240 m = frexp (x, &e) * 0x20000000000000U;
1241
1242 r = m & 0x8000000000000000;;
1243
1244 if (r)
1245 m = -m;
1246
1247 if (e <= -1022)
1248 {
1249 m &= 0x1fffffffffffffU;
1250 m >>= (-1021 - e);
1251 e = -1022;
1252 }
1253
1254 r |= ((uint64_t)(e + 1022)) << 52;
1255 r |= m & 0xfffffffffffffU;
1256 #endif
1257
1258 return r;
1259 }
1260
1261 /* converts an ieee double/binary64 to a double */
1262 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1263 ecb_function_ double
1264 ecb_binary64_to_double (uint64_t x)
1265 {
1266 double r;
1267
1268 #if ECB_STDFP
1269 memcpy (&r, &x, 8);
1270 #else
1271 /* emulation, only works for normals and subnormals and +0 */
1272 int neg = x >> 63;
1273 int e = (x >> 52) & 0x7ffU;
1274
1275 x &= 0xfffffffffffffU;
1276
1277 if (e)
1278 x |= 0x10000000000000U;
1279 else
1280 e = 1;
1281
1282 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1283 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1284
1285 r = neg ? -r : r;
1286 #endif
1287
1288 return r;
1289 }
1290
1291#endif
1292
1293#endif
1294
1295/* ECB.H END */
1296
1297#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1298/* if your architecture doesn't need memory fences, e.g. because it is
1299 * single-cpu/core, or if you use libev in a project that doesn't use libev
1300 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1301 * libev, in which cases the memory fences become nops.
1302 * alternatively, you can remove this #error and link against libpthread,
1303 * which will then provide the memory fences.
1304 */
1305# error "memory fences not defined for your architecture, please report"
1306#endif
1307
1308#ifndef ECB_MEMORY_FENCE
1309# define ECB_MEMORY_FENCE do { } while (0)
1310# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1311# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1312#endif
1313
1314#define expect_false(cond) ecb_expect_false (cond)
1315#define expect_true(cond) ecb_expect_true (cond)
1316#define noinline ecb_noinline
1317
441#define inline_size static inline 1318#define inline_size ecb_inline
442 1319
443#if EV_MINIMAL 1320#if EV_FEATURE_CODE
1321# define inline_speed ecb_inline
1322#else
444# define inline_speed static noinline 1323# define inline_speed static noinline
445#else
446# define inline_speed static inline
447#endif 1324#endif
448 1325
449#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1326#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
450 1327
451#if EV_MINPRI == EV_MAXPRI 1328#if EV_MINPRI == EV_MAXPRI
… …
464#define ev_active(w) ((W)(w))->active 1341#define ev_active(w) ((W)(w))->active
465#define ev_at(w) ((WT)(w))->at 1342#define ev_at(w) ((WT)(w))->at
466 1343
467#if EV_USE_REALTIME 1344#if EV_USE_REALTIME
468/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1345/* sig_atomic_t is used to avoid per-thread variables or locking but still */
469/* giving it a reasonably high chance of working on typical architetcures */ 1346/* giving it a reasonably high chance of working on typical architectures */
470static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1347static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
471#endif 1348#endif
472 1349
473#if EV_USE_MONOTONIC 1350#if EV_USE_MONOTONIC
474static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1351static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
475#endif 1352#endif
476 1353
1354#ifndef EV_FD_TO_WIN32_HANDLE
1355# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1356#endif
1357#ifndef EV_WIN32_HANDLE_TO_FD
1358# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1359#endif
1360#ifndef EV_WIN32_CLOSE_FD
1361# define EV_WIN32_CLOSE_FD(fd) close (fd)
1362#endif
1363
477#ifdef _WIN32 1364#ifdef _WIN32
478# include "ev_win32.c" 1365# include "ev_win32.c"
479#endif 1366#endif
480 1367
481/*****************************************************************************/ 1368/*****************************************************************************/
482 1369
1370/* define a suitable floor function (only used by periodics atm) */
1371
1372#if EV_USE_FLOOR
1373# include <math.h>
1374# define ev_floor(v) floor (v)
1375#else
1376
1377#include <float.h>
1378
1379/* a floor() replacement function, should be independent of ev_tstamp type */
1380static ev_tstamp noinline
1381ev_floor (ev_tstamp v)
1382{
1383 /* the choice of shift factor is not terribly important */
1384#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1385 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1386#else
1387 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1388#endif
1389
1390 /* argument too large for an unsigned long? */
1391 if (expect_false (v >= shift))
1392 {
1393 ev_tstamp f;
1394
1395 if (v == v - 1.)
1396 return v; /* very large number */
1397
1398 f = shift * ev_floor (v * (1. / shift));
1399 return f + ev_floor (v - f);
1400 }
1401
1402 /* special treatment for negative args? */
1403 if (expect_false (v < 0.))
1404 {
1405 ev_tstamp f = -ev_floor (-v);
1406
1407 return f - (f == v ? 0 : 1);
1408 }
1409
1410 /* fits into an unsigned long */
1411 return (unsigned long)v;
1412}
1413
1414#endif
1415
1416/*****************************************************************************/
1417
1418#ifdef __linux
1419# include <sys/utsname.h>
1420#endif
1421
1422static unsigned int noinline ecb_cold
1423ev_linux_version (void)
1424{
1425#ifdef __linux
1426 unsigned int v = 0;
1427 struct utsname buf;
1428 int i;
1429 char *p = buf.release;
1430
1431 if (uname (&buf))
1432 return 0;
1433
1434 for (i = 3+1; --i; )
1435 {
1436 unsigned int c = 0;
1437
1438 for (;;)
1439 {
1440 if (*p >= '0' && *p <= '9')
1441 c = c * 10 + *p++ - '0';
1442 else
1443 {
1444 p += *p == '.';
1445 break;
1446 }
1447 }
1448
1449 v = (v << 8) | c;
1450 }
1451
1452 return v;
1453#else
1454 return 0;
1455#endif
1456}
1457
1458/*****************************************************************************/
1459
1460#if EV_AVOID_STDIO
1461static void noinline ecb_cold
1462ev_printerr (const char *msg)
1463{
1464 write (STDERR_FILENO, msg, strlen (msg));
1465}
1466#endif
1467
483static void (*syserr_cb)(const char *msg); 1468static void (*syserr_cb)(const char *msg) EV_THROW;
484 1469
485void 1470void ecb_cold
486ev_set_syserr_cb (void (*cb)(const char *msg)) 1471ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
487{ 1472{
488 syserr_cb = cb; 1473 syserr_cb = cb;
489} 1474}
490 1475
491static void noinline 1476static void noinline ecb_cold
492ev_syserr (const char *msg) 1477ev_syserr (const char *msg)
493{ 1478{
494 if (!msg) 1479 if (!msg)
495 msg = "(libev) system error"; 1480 msg = "(libev) system error";
496 1481
497 if (syserr_cb) 1482 if (syserr_cb)
498 syserr_cb (msg); 1483 syserr_cb (msg);
499 else 1484 else
500 { 1485 {
1486#if EV_AVOID_STDIO
1487 ev_printerr (msg);
1488 ev_printerr (": ");
1489 ev_printerr (strerror (errno));
1490 ev_printerr ("\n");
1491#else
501 perror (msg); 1492 perror (msg);
1493#endif
502 abort (); 1494 abort ();
503 } 1495 }
504} 1496}
505 1497
506static void * 1498static void *
507ev_realloc_emul (void *ptr, long size) 1499ev_realloc_emul (void *ptr, long size) EV_THROW
508{ 1500{
509 /* some systems, notably openbsd and darwin, fail to properly 1501 /* some systems, notably openbsd and darwin, fail to properly
510 * implement realloc (x, 0) (as required by both ansi c-98 and 1502 * implement realloc (x, 0) (as required by both ansi c-89 and
511 * the single unix specification, so work around them here. 1503 * the single unix specification, so work around them here.
1504 * recently, also (at least) fedora and debian started breaking it,
1505 * despite documenting it otherwise.
512 */ 1506 */
513 1507
514 if (size) 1508 if (size)
515 return realloc (ptr, size); 1509 return realloc (ptr, size);
516 1510
517 free (ptr); 1511 free (ptr);
518 return 0; 1512 return 0;
519} 1513}
520 1514
521static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1515static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
522 1516
523void 1517void ecb_cold
524ev_set_allocator (void *(*cb)(void *ptr, long size)) 1518ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
525{ 1519{
526 alloc = cb; 1520 alloc = cb;
527} 1521}
528 1522
529inline_speed void * 1523inline_speed void *
… …
531{ 1525{
532 ptr = alloc (ptr, size); 1526 ptr = alloc (ptr, size);
533 1527
534 if (!ptr && size) 1528 if (!ptr && size)
535 { 1529 {
1530#if EV_AVOID_STDIO
1531 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1532#else
536 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1533 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1534#endif
537 abort (); 1535 abort ();
538 } 1536 }
539 1537
540 return ptr; 1538 return ptr;
541} 1539}
… …
557 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1555 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
558 unsigned char unused; 1556 unsigned char unused;
559#if EV_USE_EPOLL 1557#if EV_USE_EPOLL
560 unsigned int egen; /* generation counter to counter epoll bugs */ 1558 unsigned int egen; /* generation counter to counter epoll bugs */
561#endif 1559#endif
562#if EV_SELECT_IS_WINSOCKET 1560#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
563 SOCKET handle; 1561 SOCKET handle;
1562#endif
1563#if EV_USE_IOCP
1564 OVERLAPPED or, ow;
564#endif 1565#endif
565} ANFD; 1566} ANFD;
566 1567
567/* stores the pending event set for a given watcher */ 1568/* stores the pending event set for a given watcher */
568typedef struct 1569typedef struct
… …
610 #undef VAR 1611 #undef VAR
611 }; 1612 };
612 #include "ev_wrap.h" 1613 #include "ev_wrap.h"
613 1614
614 static struct ev_loop default_loop_struct; 1615 static struct ev_loop default_loop_struct;
615 struct ev_loop *ev_default_loop_ptr; 1616 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
616 1617
617#else 1618#else
618 1619
619 ev_tstamp ev_rt_now; 1620 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
620 #define VAR(name,decl) static decl; 1621 #define VAR(name,decl) static decl;
621 #include "ev_vars.h" 1622 #include "ev_vars.h"
622 #undef VAR 1623 #undef VAR
623 1624
624 static int ev_default_loop_ptr; 1625 static int ev_default_loop_ptr;
625 1626
626#endif 1627#endif
627 1628
628#if EV_MINIMAL < 2 1629#if EV_FEATURE_API
629# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1630# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
630# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1631# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
631# define EV_INVOKE_PENDING invoke_cb (EV_A) 1632# define EV_INVOKE_PENDING invoke_cb (EV_A)
632#else 1633#else
633# define EV_RELEASE_CB (void)0 1634# define EV_RELEASE_CB (void)0
634# define EV_ACQUIRE_CB (void)0 1635# define EV_ACQUIRE_CB (void)0
635# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1636# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
636#endif 1637#endif
637 1638
638#define EVUNLOOP_RECURSE 0x80 1639#define EVBREAK_RECURSE 0x80
639 1640
640/*****************************************************************************/ 1641/*****************************************************************************/
641 1642
642#ifndef EV_HAVE_EV_TIME 1643#ifndef EV_HAVE_EV_TIME
643ev_tstamp 1644ev_tstamp
644ev_time (void) 1645ev_time (void) EV_THROW
645{ 1646{
646#if EV_USE_REALTIME 1647#if EV_USE_REALTIME
647 if (expect_true (have_realtime)) 1648 if (expect_true (have_realtime))
648 { 1649 {
649 struct timespec ts; 1650 struct timespec ts;
… …
673 return ev_time (); 1674 return ev_time ();
674} 1675}
675 1676
676#if EV_MULTIPLICITY 1677#if EV_MULTIPLICITY
677ev_tstamp 1678ev_tstamp
678ev_now (EV_P) 1679ev_now (EV_P) EV_THROW
679{ 1680{
680 return ev_rt_now; 1681 return ev_rt_now;
681} 1682}
682#endif 1683#endif
683 1684
684void 1685void
685ev_sleep (ev_tstamp delay) 1686ev_sleep (ev_tstamp delay) EV_THROW
686{ 1687{
687 if (delay > 0.) 1688 if (delay > 0.)
688 { 1689 {
689#if EV_USE_NANOSLEEP 1690#if EV_USE_NANOSLEEP
690 struct timespec ts; 1691 struct timespec ts;
691 1692
692 ts.tv_sec = (time_t)delay; 1693 EV_TS_SET (ts, delay);
693 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
694
695 nanosleep (&ts, 0); 1694 nanosleep (&ts, 0);
696#elif defined(_WIN32) 1695#elif defined _WIN32
697 Sleep ((unsigned long)(delay * 1e3)); 1696 Sleep ((unsigned long)(delay * 1e3));
698#else 1697#else
699 struct timeval tv; 1698 struct timeval tv;
700 1699
701 tv.tv_sec = (time_t)delay;
702 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
703
704 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1700 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
705 /* something not guaranteed by newer posix versions, but guaranteed */ 1701 /* something not guaranteed by newer posix versions, but guaranteed */
706 /* by older ones */ 1702 /* by older ones */
1703 EV_TV_SET (tv, delay);
707 select (0, 0, 0, 0, &tv); 1704 select (0, 0, 0, 0, &tv);
708#endif 1705#endif
709 } 1706 }
710} 1707}
711 1708
712/*****************************************************************************/ 1709/*****************************************************************************/
713 1710
714#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1711#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
715 1712
716/* find a suitable new size for the given array, */ 1713/* find a suitable new size for the given array, */
717/* hopefully by rounding to a ncie-to-malloc size */ 1714/* hopefully by rounding to a nice-to-malloc size */
718inline_size int 1715inline_size int
719array_nextsize (int elem, int cur, int cnt) 1716array_nextsize (int elem, int cur, int cnt)
720{ 1717{
721 int ncur = cur + 1; 1718 int ncur = cur + 1;
722 1719
723 do 1720 do
724 ncur <<= 1; 1721 ncur <<= 1;
725 while (cnt > ncur); 1722 while (cnt > ncur);
726 1723
727 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1724 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
728 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1725 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
729 { 1726 {
730 ncur *= elem; 1727 ncur *= elem;
731 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1728 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
732 ncur = ncur - sizeof (void *) * 4; 1729 ncur = ncur - sizeof (void *) * 4;
… …
734 } 1731 }
735 1732
736 return ncur; 1733 return ncur;
737} 1734}
738 1735
739static noinline void * 1736static void * noinline ecb_cold
740array_realloc (int elem, void *base, int *cur, int cnt) 1737array_realloc (int elem, void *base, int *cur, int cnt)
741{ 1738{
742 *cur = array_nextsize (elem, *cur, cnt); 1739 *cur = array_nextsize (elem, *cur, cnt);
743 return ev_realloc (base, elem * *cur); 1740 return ev_realloc (base, elem * *cur);
744} 1741}
… …
747 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1744 memset ((void *)(base), 0, sizeof (*(base)) * (count))
748 1745
749#define array_needsize(type,base,cur,cnt,init) \ 1746#define array_needsize(type,base,cur,cnt,init) \
750 if (expect_false ((cnt) > (cur))) \ 1747 if (expect_false ((cnt) > (cur))) \
751 { \ 1748 { \
752 int ocur_ = (cur); \ 1749 int ecb_unused ocur_ = (cur); \
753 (base) = (type *)array_realloc \ 1750 (base) = (type *)array_realloc \
754 (sizeof (type), (base), &(cur), (cnt)); \ 1751 (sizeof (type), (base), &(cur), (cnt)); \
755 init ((base) + (ocur_), (cur) - ocur_); \ 1752 init ((base) + (ocur_), (cur) - ocur_); \
756 } 1753 }
757 1754
… …
775pendingcb (EV_P_ ev_prepare *w, int revents) 1772pendingcb (EV_P_ ev_prepare *w, int revents)
776{ 1773{
777} 1774}
778 1775
779void noinline 1776void noinline
780ev_feed_event (EV_P_ void *w, int revents) 1777ev_feed_event (EV_P_ void *w, int revents) EV_THROW
781{ 1778{
782 W w_ = (W)w; 1779 W w_ = (W)w;
783 int pri = ABSPRI (w_); 1780 int pri = ABSPRI (w_);
784 1781
785 if (expect_false (w_->pending)) 1782 if (expect_false (w_->pending))
… …
789 w_->pending = ++pendingcnt [pri]; 1786 w_->pending = ++pendingcnt [pri];
790 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1787 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
791 pendings [pri][w_->pending - 1].w = w_; 1788 pendings [pri][w_->pending - 1].w = w_;
792 pendings [pri][w_->pending - 1].events = revents; 1789 pendings [pri][w_->pending - 1].events = revents;
793 } 1790 }
1791
1792 pendingpri = NUMPRI - 1;
794} 1793}
795 1794
796inline_speed void 1795inline_speed void
797feed_reverse (EV_P_ W w) 1796feed_reverse (EV_P_ W w)
798{ 1797{
… …
818} 1817}
819 1818
820/*****************************************************************************/ 1819/*****************************************************************************/
821 1820
822inline_speed void 1821inline_speed void
823fd_event_nc (EV_P_ int fd, int revents) 1822fd_event_nocheck (EV_P_ int fd, int revents)
824{ 1823{
825 ANFD *anfd = anfds + fd; 1824 ANFD *anfd = anfds + fd;
826 ev_io *w; 1825 ev_io *w;
827 1826
828 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1827 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
840fd_event (EV_P_ int fd, int revents) 1839fd_event (EV_P_ int fd, int revents)
841{ 1840{
842 ANFD *anfd = anfds + fd; 1841 ANFD *anfd = anfds + fd;
843 1842
844 if (expect_true (!anfd->reify)) 1843 if (expect_true (!anfd->reify))
845 fd_event_nc (EV_A_ fd, revents); 1844 fd_event_nocheck (EV_A_ fd, revents);
846} 1845}
847 1846
848void 1847void
849ev_feed_fd_event (EV_P_ int fd, int revents) 1848ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
850{ 1849{
851 if (fd >= 0 && fd < anfdmax) 1850 if (fd >= 0 && fd < anfdmax)
852 fd_event_nc (EV_A_ fd, revents); 1851 fd_event_nocheck (EV_A_ fd, revents);
853} 1852}
854 1853
855/* make sure the external fd watch events are in-sync */ 1854/* make sure the external fd watch events are in-sync */
856/* with the kernel/libev internal state */ 1855/* with the kernel/libev internal state */
857inline_size void 1856inline_size void
858fd_reify (EV_P) 1857fd_reify (EV_P)
859{ 1858{
860 int i; 1859 int i;
861 1860
1861#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1862 for (i = 0; i < fdchangecnt; ++i)
1863 {
1864 int fd = fdchanges [i];
1865 ANFD *anfd = anfds + fd;
1866
1867 if (anfd->reify & EV__IOFDSET && anfd->head)
1868 {
1869 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1870
1871 if (handle != anfd->handle)
1872 {
1873 unsigned long arg;
1874
1875 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1876
1877 /* handle changed, but fd didn't - we need to do it in two steps */
1878 backend_modify (EV_A_ fd, anfd->events, 0);
1879 anfd->events = 0;
1880 anfd->handle = handle;
1881 }
1882 }
1883 }
1884#endif
1885
862 for (i = 0; i < fdchangecnt; ++i) 1886 for (i = 0; i < fdchangecnt; ++i)
863 { 1887 {
864 int fd = fdchanges [i]; 1888 int fd = fdchanges [i];
865 ANFD *anfd = anfds + fd; 1889 ANFD *anfd = anfds + fd;
866 ev_io *w; 1890 ev_io *w;
867 1891
868 unsigned char events = 0; 1892 unsigned char o_events = anfd->events;
1893 unsigned char o_reify = anfd->reify;
869 1894
870 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1895 anfd->reify = 0;
871 events |= (unsigned char)w->events;
872 1896
873#if EV_SELECT_IS_WINSOCKET 1897 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
874 if (events)
875 { 1898 {
876 unsigned long arg; 1899 anfd->events = 0;
877 #ifdef EV_FD_TO_WIN32_HANDLE 1900
878 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1901 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
879 #else 1902 anfd->events |= (unsigned char)w->events;
880 anfd->handle = _get_osfhandle (fd); 1903
881 #endif 1904 if (o_events != anfd->events)
882 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1905 o_reify = EV__IOFDSET; /* actually |= */
883 } 1906 }
884#endif
885 1907
886 { 1908 if (o_reify & EV__IOFDSET)
887 unsigned char o_events = anfd->events;
888 unsigned char o_reify = anfd->reify;
889
890 anfd->reify = 0;
891 anfd->events = events;
892
893 if (o_events != events || o_reify & EV__IOFDSET)
894 backend_modify (EV_A_ fd, o_events, events); 1909 backend_modify (EV_A_ fd, o_events, anfd->events);
895 }
896 } 1910 }
897 1911
898 fdchangecnt = 0; 1912 fdchangecnt = 0;
899} 1913}
900 1914
… …
912 fdchanges [fdchangecnt - 1] = fd; 1926 fdchanges [fdchangecnt - 1] = fd;
913 } 1927 }
914} 1928}
915 1929
916/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1930/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
917inline_speed void 1931inline_speed void ecb_cold
918fd_kill (EV_P_ int fd) 1932fd_kill (EV_P_ int fd)
919{ 1933{
920 ev_io *w; 1934 ev_io *w;
921 1935
922 while ((w = (ev_io *)anfds [fd].head)) 1936 while ((w = (ev_io *)anfds [fd].head))
… …
924 ev_io_stop (EV_A_ w); 1938 ev_io_stop (EV_A_ w);
925 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1939 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
926 } 1940 }
927} 1941}
928 1942
929/* check whether the given fd is atcually valid, for error recovery */ 1943/* check whether the given fd is actually valid, for error recovery */
930inline_size int 1944inline_size int ecb_cold
931fd_valid (int fd) 1945fd_valid (int fd)
932{ 1946{
933#ifdef _WIN32 1947#ifdef _WIN32
934 return _get_osfhandle (fd) != -1; 1948 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
935#else 1949#else
936 return fcntl (fd, F_GETFD) != -1; 1950 return fcntl (fd, F_GETFD) != -1;
937#endif 1951#endif
938} 1952}
939 1953
940/* called on EBADF to verify fds */ 1954/* called on EBADF to verify fds */
941static void noinline 1955static void noinline ecb_cold
942fd_ebadf (EV_P) 1956fd_ebadf (EV_P)
943{ 1957{
944 int fd; 1958 int fd;
945 1959
946 for (fd = 0; fd < anfdmax; ++fd) 1960 for (fd = 0; fd < anfdmax; ++fd)
… …
948 if (!fd_valid (fd) && errno == EBADF) 1962 if (!fd_valid (fd) && errno == EBADF)
949 fd_kill (EV_A_ fd); 1963 fd_kill (EV_A_ fd);
950} 1964}
951 1965
952/* called on ENOMEM in select/poll to kill some fds and retry */ 1966/* called on ENOMEM in select/poll to kill some fds and retry */
953static void noinline 1967static void noinline ecb_cold
954fd_enomem (EV_P) 1968fd_enomem (EV_P)
955{ 1969{
956 int fd; 1970 int fd;
957 1971
958 for (fd = anfdmax; fd--; ) 1972 for (fd = anfdmax; fd--; )
… …
976 anfds [fd].emask = 0; 1990 anfds [fd].emask = 0;
977 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1991 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
978 } 1992 }
979} 1993}
980 1994
1995/* used to prepare libev internal fd's */
1996/* this is not fork-safe */
1997inline_speed void
1998fd_intern (int fd)
1999{
2000#ifdef _WIN32
2001 unsigned long arg = 1;
2002 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
2003#else
2004 fcntl (fd, F_SETFD, FD_CLOEXEC);
2005 fcntl (fd, F_SETFL, O_NONBLOCK);
2006#endif
2007}
2008
981/*****************************************************************************/ 2009/*****************************************************************************/
982 2010
983/* 2011/*
984 * the heap functions want a real array index. array index 0 uis guaranteed to not 2012 * the heap functions want a real array index. array index 0 is guaranteed to not
985 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2013 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
986 * the branching factor of the d-tree. 2014 * the branching factor of the d-tree.
987 */ 2015 */
988 2016
989/* 2017/*
… …
1057 2085
1058 for (;;) 2086 for (;;)
1059 { 2087 {
1060 int c = k << 1; 2088 int c = k << 1;
1061 2089
1062 if (c > N + HEAP0 - 1) 2090 if (c >= N + HEAP0)
1063 break; 2091 break;
1064 2092
1065 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2093 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1066 ? 1 : 0; 2094 ? 1 : 0;
1067 2095
… …
1103 2131
1104/* move an element suitably so it is in a correct place */ 2132/* move an element suitably so it is in a correct place */
1105inline_size void 2133inline_size void
1106adjustheap (ANHE *heap, int N, int k) 2134adjustheap (ANHE *heap, int N, int k)
1107{ 2135{
1108 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2136 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1109 upheap (heap, k); 2137 upheap (heap, k);
1110 else 2138 else
1111 downheap (heap, N, k); 2139 downheap (heap, N, k);
1112} 2140}
1113 2141
… …
1137 2165
1138static ANSIG signals [EV_NSIG - 1]; 2166static ANSIG signals [EV_NSIG - 1];
1139 2167
1140/*****************************************************************************/ 2168/*****************************************************************************/
1141 2169
1142/* used to prepare libev internal fd's */ 2170#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1143/* this is not fork-safe */ 2171
2172static void noinline ecb_cold
2173evpipe_init (EV_P)
2174{
2175 if (!ev_is_active (&pipe_w))
2176 {
2177 int fds [2];
2178
2179# if EV_USE_EVENTFD
2180 fds [0] = -1;
2181 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2182 if (fds [1] < 0 && errno == EINVAL)
2183 fds [1] = eventfd (0, 0);
2184
2185 if (fds [1] < 0)
2186# endif
2187 {
2188 while (pipe (fds))
2189 ev_syserr ("(libev) error creating signal/async pipe");
2190
2191 fd_intern (fds [0]);
2192 }
2193
2194 evpipe [0] = fds [0];
2195
2196 if (evpipe [1] < 0)
2197 evpipe [1] = fds [1]; /* first call, set write fd */
2198 else
2199 {
2200 /* on subsequent calls, do not change evpipe [1] */
2201 /* so that evpipe_write can always rely on its value. */
2202 /* this branch does not do anything sensible on windows, */
2203 /* so must not be executed on windows */
2204
2205 dup2 (fds [1], evpipe [1]);
2206 close (fds [1]);
2207 }
2208
2209 fd_intern (evpipe [1]);
2210
2211 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2212 ev_io_start (EV_A_ &pipe_w);
2213 ev_unref (EV_A); /* watcher should not keep loop alive */
2214 }
2215}
2216
1144inline_speed void 2217inline_speed void
1145fd_intern (int fd) 2218evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1146{ 2219{
1147#ifdef _WIN32 2220 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1148 unsigned long arg = 1;
1149 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1150#else
1151 fcntl (fd, F_SETFD, FD_CLOEXEC);
1152 fcntl (fd, F_SETFL, O_NONBLOCK);
1153#endif
1154}
1155 2221
1156static void noinline 2222 if (expect_true (*flag))
1157evpipe_init (EV_P) 2223 return;
1158{ 2224
1159 if (!ev_is_active (&pipe_w)) 2225 *flag = 1;
2226 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2227
2228 pipe_write_skipped = 1;
2229
2230 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2231
2232 if (pipe_write_wanted)
1160 { 2233 {
2234 int old_errno;
2235
2236 pipe_write_skipped = 0;
2237 ECB_MEMORY_FENCE_RELEASE;
2238
2239 old_errno = errno; /* save errno because write will clobber it */
2240
1161#if EV_USE_EVENTFD 2241#if EV_USE_EVENTFD
1162 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2242 if (evpipe [0] < 0)
1163 if (evfd < 0 && errno == EINVAL)
1164 evfd = eventfd (0, 0);
1165
1166 if (evfd >= 0)
1167 { 2243 {
1168 evpipe [0] = -1; 2244 uint64_t counter = 1;
1169 fd_intern (evfd); /* doing it twice doesn't hurt */ 2245 write (evpipe [1], &counter, sizeof (uint64_t));
1170 ev_io_set (&pipe_w, evfd, EV_READ);
1171 } 2246 }
1172 else 2247 else
1173#endif 2248#endif
1174 { 2249 {
1175 while (pipe (evpipe)) 2250#ifdef _WIN32
1176 ev_syserr ("(libev) error creating signal/async pipe"); 2251 WSABUF buf;
1177 2252 DWORD sent;
1178 fd_intern (evpipe [0]); 2253 buf.buf = &buf;
1179 fd_intern (evpipe [1]); 2254 buf.len = 1;
1180 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2255 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2256#else
2257 write (evpipe [1], &(evpipe [1]), 1);
2258#endif
1181 } 2259 }
1182
1183 ev_io_start (EV_A_ &pipe_w);
1184 ev_unref (EV_A); /* watcher should not keep loop alive */
1185 }
1186}
1187
1188inline_size void
1189evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1190{
1191 if (!*flag)
1192 {
1193 int old_errno = errno; /* save errno because write might clobber it */
1194
1195 *flag = 1;
1196
1197#if EV_USE_EVENTFD
1198 if (evfd >= 0)
1199 {
1200 uint64_t counter = 1;
1201 write (evfd, &counter, sizeof (uint64_t));
1202 }
1203 else
1204#endif
1205 write (evpipe [1], &old_errno, 1);
1206 2260
1207 errno = old_errno; 2261 errno = old_errno;
1208 } 2262 }
1209} 2263}
1210 2264
… …
1213static void 2267static void
1214pipecb (EV_P_ ev_io *iow, int revents) 2268pipecb (EV_P_ ev_io *iow, int revents)
1215{ 2269{
1216 int i; 2270 int i;
1217 2271
2272 if (revents & EV_READ)
2273 {
1218#if EV_USE_EVENTFD 2274#if EV_USE_EVENTFD
1219 if (evfd >= 0) 2275 if (evpipe [0] < 0)
1220 { 2276 {
1221 uint64_t counter; 2277 uint64_t counter;
1222 read (evfd, &counter, sizeof (uint64_t)); 2278 read (evpipe [1], &counter, sizeof (uint64_t));
1223 } 2279 }
1224 else 2280 else
1225#endif 2281#endif
1226 { 2282 {
1227 char dummy; 2283 char dummy[4];
2284#ifdef _WIN32
2285 WSABUF buf;
2286 DWORD recvd;
2287 DWORD flags = 0;
2288 buf.buf = dummy;
2289 buf.len = sizeof (dummy);
2290 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2291#else
1228 read (evpipe [0], &dummy, 1); 2292 read (evpipe [0], &dummy, sizeof (dummy));
2293#endif
2294 }
1229 } 2295 }
1230 2296
2297 pipe_write_skipped = 0;
2298
2299 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2300
2301#if EV_SIGNAL_ENABLE
1231 if (sig_pending) 2302 if (sig_pending)
1232 { 2303 {
1233 sig_pending = 0; 2304 sig_pending = 0;
2305
2306 ECB_MEMORY_FENCE;
1234 2307
1235 for (i = EV_NSIG - 1; i--; ) 2308 for (i = EV_NSIG - 1; i--; )
1236 if (expect_false (signals [i].pending)) 2309 if (expect_false (signals [i].pending))
1237 ev_feed_signal_event (EV_A_ i + 1); 2310 ev_feed_signal_event (EV_A_ i + 1);
1238 } 2311 }
2312#endif
1239 2313
1240#if EV_ASYNC_ENABLE 2314#if EV_ASYNC_ENABLE
1241 if (async_pending) 2315 if (async_pending)
1242 { 2316 {
1243 async_pending = 0; 2317 async_pending = 0;
2318
2319 ECB_MEMORY_FENCE;
1244 2320
1245 for (i = asynccnt; i--; ) 2321 for (i = asynccnt; i--; )
1246 if (asyncs [i]->sent) 2322 if (asyncs [i]->sent)
1247 { 2323 {
1248 asyncs [i]->sent = 0; 2324 asyncs [i]->sent = 0;
2325 ECB_MEMORY_FENCE_RELEASE;
1249 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2326 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1250 } 2327 }
1251 } 2328 }
1252#endif 2329#endif
1253} 2330}
1254 2331
1255/*****************************************************************************/ 2332/*****************************************************************************/
1256 2333
2334void
2335ev_feed_signal (int signum) EV_THROW
2336{
2337#if EV_MULTIPLICITY
2338 EV_P;
2339 ECB_MEMORY_FENCE_ACQUIRE;
2340 EV_A = signals [signum - 1].loop;
2341
2342 if (!EV_A)
2343 return;
2344#endif
2345
2346 signals [signum - 1].pending = 1;
2347 evpipe_write (EV_A_ &sig_pending);
2348}
2349
1257static void 2350static void
1258ev_sighandler (int signum) 2351ev_sighandler (int signum)
1259{ 2352{
1260#if EV_MULTIPLICITY
1261 EV_P = signals [signum - 1].loop;
1262#endif
1263
1264#if _WIN32 2353#ifdef _WIN32
1265 signal (signum, ev_sighandler); 2354 signal (signum, ev_sighandler);
1266#endif 2355#endif
1267 2356
1268 signals [signum - 1].pending = 1; 2357 ev_feed_signal (signum);
1269 evpipe_write (EV_A_ &sig_pending);
1270} 2358}
1271 2359
1272void noinline 2360void noinline
1273ev_feed_signal_event (EV_P_ int signum) 2361ev_feed_signal_event (EV_P_ int signum) EV_THROW
1274{ 2362{
1275 WL w; 2363 WL w;
1276 2364
1277 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2365 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1278 return; 2366 return;
1279 2367
1280 --signum; 2368 --signum;
1281 2369
1282#if EV_MULTIPLICITY 2370#if EV_MULTIPLICITY
… …
1286 if (expect_false (signals [signum].loop != EV_A)) 2374 if (expect_false (signals [signum].loop != EV_A))
1287 return; 2375 return;
1288#endif 2376#endif
1289 2377
1290 signals [signum].pending = 0; 2378 signals [signum].pending = 0;
2379 ECB_MEMORY_FENCE_RELEASE;
1291 2380
1292 for (w = signals [signum].head; w; w = w->next) 2381 for (w = signals [signum].head; w; w = w->next)
1293 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2382 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1294} 2383}
1295 2384
… …
1311 break; 2400 break;
1312 } 2401 }
1313} 2402}
1314#endif 2403#endif
1315 2404
2405#endif
2406
1316/*****************************************************************************/ 2407/*****************************************************************************/
1317 2408
2409#if EV_CHILD_ENABLE
1318static WL childs [EV_PID_HASHSIZE]; 2410static WL childs [EV_PID_HASHSIZE];
1319
1320#ifndef _WIN32
1321 2411
1322static ev_signal childev; 2412static ev_signal childev;
1323 2413
1324#ifndef WIFCONTINUED 2414#ifndef WIFCONTINUED
1325# define WIFCONTINUED(status) 0 2415# define WIFCONTINUED(status) 0
… …
1330child_reap (EV_P_ int chain, int pid, int status) 2420child_reap (EV_P_ int chain, int pid, int status)
1331{ 2421{
1332 ev_child *w; 2422 ev_child *w;
1333 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2423 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1334 2424
1335 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2425 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1336 { 2426 {
1337 if ((w->pid == pid || !w->pid) 2427 if ((w->pid == pid || !w->pid)
1338 && (!traced || (w->flags & 1))) 2428 && (!traced || (w->flags & 1)))
1339 { 2429 {
1340 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2430 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1365 /* make sure we are called again until all children have been reaped */ 2455 /* make sure we are called again until all children have been reaped */
1366 /* we need to do it this way so that the callback gets called before we continue */ 2456 /* we need to do it this way so that the callback gets called before we continue */
1367 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2457 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1368 2458
1369 child_reap (EV_A_ pid, pid, status); 2459 child_reap (EV_A_ pid, pid, status);
1370 if (EV_PID_HASHSIZE > 1) 2460 if ((EV_PID_HASHSIZE) > 1)
1371 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2461 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1372} 2462}
1373 2463
1374#endif 2464#endif
1375 2465
1376/*****************************************************************************/ 2466/*****************************************************************************/
1377 2467
2468#if EV_USE_IOCP
2469# include "ev_iocp.c"
2470#endif
1378#if EV_USE_PORT 2471#if EV_USE_PORT
1379# include "ev_port.c" 2472# include "ev_port.c"
1380#endif 2473#endif
1381#if EV_USE_KQUEUE 2474#if EV_USE_KQUEUE
1382# include "ev_kqueue.c" 2475# include "ev_kqueue.c"
… …
1389#endif 2482#endif
1390#if EV_USE_SELECT 2483#if EV_USE_SELECT
1391# include "ev_select.c" 2484# include "ev_select.c"
1392#endif 2485#endif
1393 2486
1394int 2487int ecb_cold
1395ev_version_major (void) 2488ev_version_major (void) EV_THROW
1396{ 2489{
1397 return EV_VERSION_MAJOR; 2490 return EV_VERSION_MAJOR;
1398} 2491}
1399 2492
1400int 2493int ecb_cold
1401ev_version_minor (void) 2494ev_version_minor (void) EV_THROW
1402{ 2495{
1403 return EV_VERSION_MINOR; 2496 return EV_VERSION_MINOR;
1404} 2497}
1405 2498
1406/* return true if we are running with elevated privileges and should ignore env variables */ 2499/* return true if we are running with elevated privileges and should ignore env variables */
1407int inline_size 2500int inline_size ecb_cold
1408enable_secure (void) 2501enable_secure (void)
1409{ 2502{
1410#ifdef _WIN32 2503#ifdef _WIN32
1411 return 0; 2504 return 0;
1412#else 2505#else
1413 return getuid () != geteuid () 2506 return getuid () != geteuid ()
1414 || getgid () != getegid (); 2507 || getgid () != getegid ();
1415#endif 2508#endif
1416} 2509}
1417 2510
1418unsigned int 2511unsigned int ecb_cold
1419ev_supported_backends (void) 2512ev_supported_backends (void) EV_THROW
1420{ 2513{
1421 unsigned int flags = 0; 2514 unsigned int flags = 0;
1422 2515
1423 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2516 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1424 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2517 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1427 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2520 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1428 2521
1429 return flags; 2522 return flags;
1430} 2523}
1431 2524
1432unsigned int 2525unsigned int ecb_cold
1433ev_recommended_backends (void) 2526ev_recommended_backends (void) EV_THROW
1434{ 2527{
1435 unsigned int flags = ev_supported_backends (); 2528 unsigned int flags = ev_supported_backends ();
1436 2529
1437#ifndef __NetBSD__ 2530#ifndef __NetBSD__
1438 /* kqueue is borked on everything but netbsd apparently */ 2531 /* kqueue is borked on everything but netbsd apparently */
… …
1442#ifdef __APPLE__ 2535#ifdef __APPLE__
1443 /* only select works correctly on that "unix-certified" platform */ 2536 /* only select works correctly on that "unix-certified" platform */
1444 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2537 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1445 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2538 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1446#endif 2539#endif
2540#ifdef __FreeBSD__
2541 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2542#endif
1447 2543
1448 return flags; 2544 return flags;
1449} 2545}
1450 2546
2547unsigned int ecb_cold
2548ev_embeddable_backends (void) EV_THROW
2549{
2550 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2551
2552 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2553 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2554 flags &= ~EVBACKEND_EPOLL;
2555
2556 return flags;
2557}
2558
1451unsigned int 2559unsigned int
1452ev_embeddable_backends (void) 2560ev_backend (EV_P) EV_THROW
1453{ 2561{
1454 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2562 return backend;
1455
1456 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1457 /* please fix it and tell me how to detect the fix */
1458 flags &= ~EVBACKEND_EPOLL;
1459
1460 return flags;
1461} 2563}
1462 2564
2565#if EV_FEATURE_API
1463unsigned int 2566unsigned int
1464ev_backend (EV_P) 2567ev_iteration (EV_P) EV_THROW
1465{ 2568{
1466 return backend; 2569 return loop_count;
1467} 2570}
1468 2571
1469#if EV_MINIMAL < 2
1470unsigned int 2572unsigned int
1471ev_loop_count (EV_P) 2573ev_depth (EV_P) EV_THROW
1472{
1473 return loop_count;
1474}
1475
1476unsigned int
1477ev_loop_depth (EV_P)
1478{ 2574{
1479 return loop_depth; 2575 return loop_depth;
1480} 2576}
1481 2577
1482void 2578void
1483ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2579ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1484{ 2580{
1485 io_blocktime = interval; 2581 io_blocktime = interval;
1486} 2582}
1487 2583
1488void 2584void
1489ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2585ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1490{ 2586{
1491 timeout_blocktime = interval; 2587 timeout_blocktime = interval;
1492} 2588}
1493 2589
1494void 2590void
1495ev_set_userdata (EV_P_ void *data) 2591ev_set_userdata (EV_P_ void *data) EV_THROW
1496{ 2592{
1497 userdata = data; 2593 userdata = data;
1498} 2594}
1499 2595
1500void * 2596void *
1501ev_userdata (EV_P) 2597ev_userdata (EV_P) EV_THROW
1502{ 2598{
1503 return userdata; 2599 return userdata;
1504} 2600}
1505 2601
2602void
1506void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2603ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1507{ 2604{
1508 invoke_cb = invoke_pending_cb; 2605 invoke_cb = invoke_pending_cb;
1509} 2606}
1510 2607
1511void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2608void
2609ev_set_loop_release_cb (EV_P_ ev_loop_callback_nothrow release, ev_loop_callback_nothrow acquire) EV_THROW
1512{ 2610{
1513 release_cb = release; 2611 release_cb = release;
1514 acquire_cb = acquire; 2612 acquire_cb = acquire;
1515} 2613}
1516#endif 2614#endif
1517 2615
1518/* initialise a loop structure, must be zero-initialised */ 2616/* initialise a loop structure, must be zero-initialised */
1519static void noinline 2617static void noinline ecb_cold
1520loop_init (EV_P_ unsigned int flags) 2618loop_init (EV_P_ unsigned int flags) EV_THROW
1521{ 2619{
1522 if (!backend) 2620 if (!backend)
1523 { 2621 {
2622 origflags = flags;
2623
1524#if EV_USE_REALTIME 2624#if EV_USE_REALTIME
1525 if (!have_realtime) 2625 if (!have_realtime)
1526 { 2626 {
1527 struct timespec ts; 2627 struct timespec ts;
1528 2628
… …
1550 if (!(flags & EVFLAG_NOENV) 2650 if (!(flags & EVFLAG_NOENV)
1551 && !enable_secure () 2651 && !enable_secure ()
1552 && getenv ("LIBEV_FLAGS")) 2652 && getenv ("LIBEV_FLAGS"))
1553 flags = atoi (getenv ("LIBEV_FLAGS")); 2653 flags = atoi (getenv ("LIBEV_FLAGS"));
1554 2654
1555 ev_rt_now = ev_time (); 2655 ev_rt_now = ev_time ();
1556 mn_now = get_clock (); 2656 mn_now = get_clock ();
1557 now_floor = mn_now; 2657 now_floor = mn_now;
1558 rtmn_diff = ev_rt_now - mn_now; 2658 rtmn_diff = ev_rt_now - mn_now;
1559#if EV_MINIMAL < 2 2659#if EV_FEATURE_API
1560 invoke_cb = ev_invoke_pending; 2660 invoke_cb = ev_invoke_pending;
1561#endif 2661#endif
1562 2662
1563 io_blocktime = 0.; 2663 io_blocktime = 0.;
1564 timeout_blocktime = 0.; 2664 timeout_blocktime = 0.;
1565 backend = 0; 2665 backend = 0;
1566 backend_fd = -1; 2666 backend_fd = -1;
1567 sig_pending = 0; 2667 sig_pending = 0;
1568#if EV_ASYNC_ENABLE 2668#if EV_ASYNC_ENABLE
1569 async_pending = 0; 2669 async_pending = 0;
1570#endif 2670#endif
2671 pipe_write_skipped = 0;
2672 pipe_write_wanted = 0;
2673 evpipe [0] = -1;
2674 evpipe [1] = -1;
1571#if EV_USE_INOTIFY 2675#if EV_USE_INOTIFY
1572 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2676 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1573#endif 2677#endif
1574#if EV_USE_SIGNALFD 2678#if EV_USE_SIGNALFD
1575 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2679 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1576#endif 2680#endif
1577 2681
1578 if (!(flags & 0x0000ffffU)) 2682 if (!(flags & EVBACKEND_MASK))
1579 flags |= ev_recommended_backends (); 2683 flags |= ev_recommended_backends ();
1580 2684
2685#if EV_USE_IOCP
2686 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2687#endif
1581#if EV_USE_PORT 2688#if EV_USE_PORT
1582 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2689 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1583#endif 2690#endif
1584#if EV_USE_KQUEUE 2691#if EV_USE_KQUEUE
1585 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2692 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1594 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2701 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1595#endif 2702#endif
1596 2703
1597 ev_prepare_init (&pending_w, pendingcb); 2704 ev_prepare_init (&pending_w, pendingcb);
1598 2705
2706#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1599 ev_init (&pipe_w, pipecb); 2707 ev_init (&pipe_w, pipecb);
1600 ev_set_priority (&pipe_w, EV_MAXPRI); 2708 ev_set_priority (&pipe_w, EV_MAXPRI);
2709#endif
1601 } 2710 }
1602} 2711}
1603 2712
1604/* free up a loop structure */ 2713/* free up a loop structure */
1605static void noinline 2714void ecb_cold
1606loop_destroy (EV_P) 2715ev_loop_destroy (EV_P)
1607{ 2716{
1608 int i; 2717 int i;
2718
2719#if EV_MULTIPLICITY
2720 /* mimic free (0) */
2721 if (!EV_A)
2722 return;
2723#endif
2724
2725#if EV_CLEANUP_ENABLE
2726 /* queue cleanup watchers (and execute them) */
2727 if (expect_false (cleanupcnt))
2728 {
2729 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2730 EV_INVOKE_PENDING;
2731 }
2732#endif
2733
2734#if EV_CHILD_ENABLE
2735 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2736 {
2737 ev_ref (EV_A); /* child watcher */
2738 ev_signal_stop (EV_A_ &childev);
2739 }
2740#endif
1609 2741
1610 if (ev_is_active (&pipe_w)) 2742 if (ev_is_active (&pipe_w))
1611 { 2743 {
1612 /*ev_ref (EV_A);*/ 2744 /*ev_ref (EV_A);*/
1613 /*ev_io_stop (EV_A_ &pipe_w);*/ 2745 /*ev_io_stop (EV_A_ &pipe_w);*/
1614 2746
1615#if EV_USE_EVENTFD 2747 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1616 if (evfd >= 0) 2748 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1617 close (evfd);
1618#endif
1619
1620 if (evpipe [0] >= 0)
1621 {
1622 close (evpipe [0]);
1623 close (evpipe [1]);
1624 }
1625 } 2749 }
1626 2750
1627#if EV_USE_SIGNALFD 2751#if EV_USE_SIGNALFD
1628 if (ev_is_active (&sigfd_w)) 2752 if (ev_is_active (&sigfd_w))
1629 {
1630 /*ev_ref (EV_A);*/
1631 /*ev_io_stop (EV_A_ &sigfd_w);*/
1632
1633 close (sigfd); 2753 close (sigfd);
1634 }
1635#endif 2754#endif
1636 2755
1637#if EV_USE_INOTIFY 2756#if EV_USE_INOTIFY
1638 if (fs_fd >= 0) 2757 if (fs_fd >= 0)
1639 close (fs_fd); 2758 close (fs_fd);
1640#endif 2759#endif
1641 2760
1642 if (backend_fd >= 0) 2761 if (backend_fd >= 0)
1643 close (backend_fd); 2762 close (backend_fd);
1644 2763
2764#if EV_USE_IOCP
2765 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2766#endif
1645#if EV_USE_PORT 2767#if EV_USE_PORT
1646 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2768 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1647#endif 2769#endif
1648#if EV_USE_KQUEUE 2770#if EV_USE_KQUEUE
1649 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2771 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1676 array_free (periodic, EMPTY); 2798 array_free (periodic, EMPTY);
1677#endif 2799#endif
1678#if EV_FORK_ENABLE 2800#if EV_FORK_ENABLE
1679 array_free (fork, EMPTY); 2801 array_free (fork, EMPTY);
1680#endif 2802#endif
2803#if EV_CLEANUP_ENABLE
2804 array_free (cleanup, EMPTY);
2805#endif
1681 array_free (prepare, EMPTY); 2806 array_free (prepare, EMPTY);
1682 array_free (check, EMPTY); 2807 array_free (check, EMPTY);
1683#if EV_ASYNC_ENABLE 2808#if EV_ASYNC_ENABLE
1684 array_free (async, EMPTY); 2809 array_free (async, EMPTY);
1685#endif 2810#endif
1686 2811
1687 backend = 0; 2812 backend = 0;
2813
2814#if EV_MULTIPLICITY
2815 if (ev_is_default_loop (EV_A))
2816#endif
2817 ev_default_loop_ptr = 0;
2818#if EV_MULTIPLICITY
2819 else
2820 ev_free (EV_A);
2821#endif
1688} 2822}
1689 2823
1690#if EV_USE_INOTIFY 2824#if EV_USE_INOTIFY
1691inline_size void infy_fork (EV_P); 2825inline_size void infy_fork (EV_P);
1692#endif 2826#endif
… …
1705#endif 2839#endif
1706#if EV_USE_INOTIFY 2840#if EV_USE_INOTIFY
1707 infy_fork (EV_A); 2841 infy_fork (EV_A);
1708#endif 2842#endif
1709 2843
2844#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1710 if (ev_is_active (&pipe_w)) 2845 if (ev_is_active (&pipe_w))
1711 { 2846 {
1712 /* this "locks" the handlers against writing to the pipe */ 2847 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1713 /* while we modify the fd vars */
1714 sig_pending = 1;
1715#if EV_ASYNC_ENABLE
1716 async_pending = 1;
1717#endif
1718 2848
1719 ev_ref (EV_A); 2849 ev_ref (EV_A);
1720 ev_io_stop (EV_A_ &pipe_w); 2850 ev_io_stop (EV_A_ &pipe_w);
1721 2851
1722#if EV_USE_EVENTFD
1723 if (evfd >= 0)
1724 close (evfd);
1725#endif
1726
1727 if (evpipe [0] >= 0) 2852 if (evpipe [0] >= 0)
1728 { 2853 EV_WIN32_CLOSE_FD (evpipe [0]);
1729 close (evpipe [0]);
1730 close (evpipe [1]);
1731 }
1732 2854
1733 evpipe_init (EV_A); 2855 evpipe_init (EV_A);
1734 /* now iterate over everything, in case we missed something */ 2856 /* iterate over everything, in case we missed something before */
1735 pipecb (EV_A_ &pipe_w, EV_READ); 2857 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1736 } 2858 }
2859#endif
1737 2860
1738 postfork = 0; 2861 postfork = 0;
1739} 2862}
1740 2863
1741#if EV_MULTIPLICITY 2864#if EV_MULTIPLICITY
1742 2865
1743struct ev_loop * 2866struct ev_loop * ecb_cold
1744ev_loop_new (unsigned int flags) 2867ev_loop_new (unsigned int flags) EV_THROW
1745{ 2868{
1746 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2869 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1747 2870
1748 memset (EV_A, 0, sizeof (struct ev_loop)); 2871 memset (EV_A, 0, sizeof (struct ev_loop));
1749 loop_init (EV_A_ flags); 2872 loop_init (EV_A_ flags);
1750 2873
1751 if (ev_backend (EV_A)) 2874 if (ev_backend (EV_A))
1752 return EV_A; 2875 return EV_A;
1753 2876
2877 ev_free (EV_A);
1754 return 0; 2878 return 0;
1755} 2879}
1756 2880
1757void
1758ev_loop_destroy (EV_P)
1759{
1760 loop_destroy (EV_A);
1761 ev_free (loop);
1762}
1763
1764void
1765ev_loop_fork (EV_P)
1766{
1767 postfork = 1; /* must be in line with ev_default_fork */
1768}
1769#endif /* multiplicity */ 2881#endif /* multiplicity */
1770 2882
1771#if EV_VERIFY 2883#if EV_VERIFY
1772static void noinline 2884static void noinline ecb_cold
1773verify_watcher (EV_P_ W w) 2885verify_watcher (EV_P_ W w)
1774{ 2886{
1775 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2887 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1776 2888
1777 if (w->pending) 2889 if (w->pending)
1778 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2890 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1779} 2891}
1780 2892
1781static void noinline 2893static void noinline ecb_cold
1782verify_heap (EV_P_ ANHE *heap, int N) 2894verify_heap (EV_P_ ANHE *heap, int N)
1783{ 2895{
1784 int i; 2896 int i;
1785 2897
1786 for (i = HEAP0; i < N + HEAP0; ++i) 2898 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1791 2903
1792 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2904 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1793 } 2905 }
1794} 2906}
1795 2907
1796static void noinline 2908static void noinline ecb_cold
1797array_verify (EV_P_ W *ws, int cnt) 2909array_verify (EV_P_ W *ws, int cnt)
1798{ 2910{
1799 while (cnt--) 2911 while (cnt--)
1800 { 2912 {
1801 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2913 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1802 verify_watcher (EV_A_ ws [cnt]); 2914 verify_watcher (EV_A_ ws [cnt]);
1803 } 2915 }
1804} 2916}
1805#endif 2917#endif
1806 2918
1807#if EV_MINIMAL < 2 2919#if EV_FEATURE_API
1808void 2920void ecb_cold
1809ev_loop_verify (EV_P) 2921ev_verify (EV_P) EV_THROW
1810{ 2922{
1811#if EV_VERIFY 2923#if EV_VERIFY
1812 int i; 2924 int i;
1813 WL w; 2925 WL w, w2;
1814 2926
1815 assert (activecnt >= -1); 2927 assert (activecnt >= -1);
1816 2928
1817 assert (fdchangemax >= fdchangecnt); 2929 assert (fdchangemax >= fdchangecnt);
1818 for (i = 0; i < fdchangecnt; ++i) 2930 for (i = 0; i < fdchangecnt; ++i)
1819 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2931 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1820 2932
1821 assert (anfdmax >= 0); 2933 assert (anfdmax >= 0);
1822 for (i = 0; i < anfdmax; ++i) 2934 for (i = 0; i < anfdmax; ++i)
2935 {
2936 int j = 0;
2937
1823 for (w = anfds [i].head; w; w = w->next) 2938 for (w = w2 = anfds [i].head; w; w = w->next)
1824 { 2939 {
1825 verify_watcher (EV_A_ (W)w); 2940 verify_watcher (EV_A_ (W)w);
2941
2942 if (j++ & 1)
2943 {
2944 assert (("libev: io watcher list contains a loop", w != w2));
2945 w2 = w2->next;
2946 }
2947
1826 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2948 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1827 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2949 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1828 } 2950 }
2951 }
1829 2952
1830 assert (timermax >= timercnt); 2953 assert (timermax >= timercnt);
1831 verify_heap (EV_A_ timers, timercnt); 2954 verify_heap (EV_A_ timers, timercnt);
1832 2955
1833#if EV_PERIODIC_ENABLE 2956#if EV_PERIODIC_ENABLE
… …
1848#if EV_FORK_ENABLE 2971#if EV_FORK_ENABLE
1849 assert (forkmax >= forkcnt); 2972 assert (forkmax >= forkcnt);
1850 array_verify (EV_A_ (W *)forks, forkcnt); 2973 array_verify (EV_A_ (W *)forks, forkcnt);
1851#endif 2974#endif
1852 2975
2976#if EV_CLEANUP_ENABLE
2977 assert (cleanupmax >= cleanupcnt);
2978 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2979#endif
2980
1853#if EV_ASYNC_ENABLE 2981#if EV_ASYNC_ENABLE
1854 assert (asyncmax >= asynccnt); 2982 assert (asyncmax >= asynccnt);
1855 array_verify (EV_A_ (W *)asyncs, asynccnt); 2983 array_verify (EV_A_ (W *)asyncs, asynccnt);
1856#endif 2984#endif
1857 2985
2986#if EV_PREPARE_ENABLE
1858 assert (preparemax >= preparecnt); 2987 assert (preparemax >= preparecnt);
1859 array_verify (EV_A_ (W *)prepares, preparecnt); 2988 array_verify (EV_A_ (W *)prepares, preparecnt);
2989#endif
1860 2990
2991#if EV_CHECK_ENABLE
1861 assert (checkmax >= checkcnt); 2992 assert (checkmax >= checkcnt);
1862 array_verify (EV_A_ (W *)checks, checkcnt); 2993 array_verify (EV_A_ (W *)checks, checkcnt);
2994#endif
1863 2995
1864# if 0 2996# if 0
2997#if EV_CHILD_ENABLE
1865 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2998 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1866 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2999 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
3000#endif
1867# endif 3001# endif
1868#endif 3002#endif
1869} 3003}
1870#endif 3004#endif
1871 3005
1872#if EV_MULTIPLICITY 3006#if EV_MULTIPLICITY
1873struct ev_loop * 3007struct ev_loop * ecb_cold
1874ev_default_loop_init (unsigned int flags)
1875#else 3008#else
1876int 3009int
3010#endif
1877ev_default_loop (unsigned int flags) 3011ev_default_loop (unsigned int flags) EV_THROW
1878#endif
1879{ 3012{
1880 if (!ev_default_loop_ptr) 3013 if (!ev_default_loop_ptr)
1881 { 3014 {
1882#if EV_MULTIPLICITY 3015#if EV_MULTIPLICITY
1883 EV_P = ev_default_loop_ptr = &default_loop_struct; 3016 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1887 3020
1888 loop_init (EV_A_ flags); 3021 loop_init (EV_A_ flags);
1889 3022
1890 if (ev_backend (EV_A)) 3023 if (ev_backend (EV_A))
1891 { 3024 {
1892#ifndef _WIN32 3025#if EV_CHILD_ENABLE
1893 ev_signal_init (&childev, childcb, SIGCHLD); 3026 ev_signal_init (&childev, childcb, SIGCHLD);
1894 ev_set_priority (&childev, EV_MAXPRI); 3027 ev_set_priority (&childev, EV_MAXPRI);
1895 ev_signal_start (EV_A_ &childev); 3028 ev_signal_start (EV_A_ &childev);
1896 ev_unref (EV_A); /* child watcher should not keep loop alive */ 3029 ev_unref (EV_A); /* child watcher should not keep loop alive */
1897#endif 3030#endif
… …
1902 3035
1903 return ev_default_loop_ptr; 3036 return ev_default_loop_ptr;
1904} 3037}
1905 3038
1906void 3039void
1907ev_default_destroy (void) 3040ev_loop_fork (EV_P) EV_THROW
1908{ 3041{
1909#if EV_MULTIPLICITY 3042 postfork = 1;
1910 EV_P = ev_default_loop_ptr;
1911#endif
1912
1913 ev_default_loop_ptr = 0;
1914
1915#ifndef _WIN32
1916 ev_ref (EV_A); /* child watcher */
1917 ev_signal_stop (EV_A_ &childev);
1918#endif
1919
1920 loop_destroy (EV_A);
1921}
1922
1923void
1924ev_default_fork (void)
1925{
1926#if EV_MULTIPLICITY
1927 EV_P = ev_default_loop_ptr;
1928#endif
1929
1930 postfork = 1; /* must be in line with ev_loop_fork */
1931} 3043}
1932 3044
1933/*****************************************************************************/ 3045/*****************************************************************************/
1934 3046
1935void 3047void
… …
1937{ 3049{
1938 EV_CB_INVOKE ((W)w, revents); 3050 EV_CB_INVOKE ((W)w, revents);
1939} 3051}
1940 3052
1941unsigned int 3053unsigned int
1942ev_pending_count (EV_P) 3054ev_pending_count (EV_P) EV_THROW
1943{ 3055{
1944 int pri; 3056 int pri;
1945 unsigned int count = 0; 3057 unsigned int count = 0;
1946 3058
1947 for (pri = NUMPRI; pri--; ) 3059 for (pri = NUMPRI; pri--; )
… …
1951} 3063}
1952 3064
1953void noinline 3065void noinline
1954ev_invoke_pending (EV_P) 3066ev_invoke_pending (EV_P)
1955{ 3067{
1956 int pri; 3068 pendingpri = NUMPRI;
1957 3069
1958 for (pri = NUMPRI; pri--; ) 3070 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3071 {
3072 --pendingpri;
3073
1959 while (pendingcnt [pri]) 3074 while (pendingcnt [pendingpri])
1960 { 3075 {
1961 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3076 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1962 3077
1963 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1964 /* ^ this is no longer true, as pending_w could be here */
1965
1966 p->w->pending = 0; 3078 p->w->pending = 0;
1967 EV_CB_INVOKE (p->w, p->events); 3079 EV_CB_INVOKE (p->w, p->events);
1968 EV_FREQUENT_CHECK; 3080 EV_FREQUENT_CHECK;
1969 } 3081 }
3082 }
1970} 3083}
1971 3084
1972#if EV_IDLE_ENABLE 3085#if EV_IDLE_ENABLE
1973/* make idle watchers pending. this handles the "call-idle */ 3086/* make idle watchers pending. this handles the "call-idle */
1974/* only when higher priorities are idle" logic */ 3087/* only when higher priorities are idle" logic */
… …
2026 EV_FREQUENT_CHECK; 3139 EV_FREQUENT_CHECK;
2027 feed_reverse (EV_A_ (W)w); 3140 feed_reverse (EV_A_ (W)w);
2028 } 3141 }
2029 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3142 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2030 3143
2031 feed_reverse_done (EV_A_ EV_TIMEOUT); 3144 feed_reverse_done (EV_A_ EV_TIMER);
2032 } 3145 }
2033} 3146}
2034 3147
2035#if EV_PERIODIC_ENABLE 3148#if EV_PERIODIC_ENABLE
3149
3150static void noinline
3151periodic_recalc (EV_P_ ev_periodic *w)
3152{
3153 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3154 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3155
3156 /* the above almost always errs on the low side */
3157 while (at <= ev_rt_now)
3158 {
3159 ev_tstamp nat = at + w->interval;
3160
3161 /* when resolution fails us, we use ev_rt_now */
3162 if (expect_false (nat == at))
3163 {
3164 at = ev_rt_now;
3165 break;
3166 }
3167
3168 at = nat;
3169 }
3170
3171 ev_at (w) = at;
3172}
3173
2036/* make periodics pending */ 3174/* make periodics pending */
2037inline_size void 3175inline_size void
2038periodics_reify (EV_P) 3176periodics_reify (EV_P)
2039{ 3177{
2040 EV_FREQUENT_CHECK; 3178 EV_FREQUENT_CHECK;
2041 3179
2042 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3180 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2043 { 3181 {
2044 int feed_count = 0;
2045
2046 do 3182 do
2047 { 3183 {
2048 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3184 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2049 3185
2050 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3186 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2059 ANHE_at_cache (periodics [HEAP0]); 3195 ANHE_at_cache (periodics [HEAP0]);
2060 downheap (periodics, periodiccnt, HEAP0); 3196 downheap (periodics, periodiccnt, HEAP0);
2061 } 3197 }
2062 else if (w->interval) 3198 else if (w->interval)
2063 { 3199 {
2064 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3200 periodic_recalc (EV_A_ w);
2065 /* if next trigger time is not sufficiently in the future, put it there */
2066 /* this might happen because of floating point inexactness */
2067 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2068 {
2069 ev_at (w) += w->interval;
2070
2071 /* if interval is unreasonably low we might still have a time in the past */
2072 /* so correct this. this will make the periodic very inexact, but the user */
2073 /* has effectively asked to get triggered more often than possible */
2074 if (ev_at (w) < ev_rt_now)
2075 ev_at (w) = ev_rt_now;
2076 }
2077
2078 ANHE_at_cache (periodics [HEAP0]); 3201 ANHE_at_cache (periodics [HEAP0]);
2079 downheap (periodics, periodiccnt, HEAP0); 3202 downheap (periodics, periodiccnt, HEAP0);
2080 } 3203 }
2081 else 3204 else
2082 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3205 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2089 feed_reverse_done (EV_A_ EV_PERIODIC); 3212 feed_reverse_done (EV_A_ EV_PERIODIC);
2090 } 3213 }
2091} 3214}
2092 3215
2093/* simply recalculate all periodics */ 3216/* simply recalculate all periodics */
2094/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3217/* TODO: maybe ensure that at least one event happens when jumping forward? */
2095static void noinline 3218static void noinline ecb_cold
2096periodics_reschedule (EV_P) 3219periodics_reschedule (EV_P)
2097{ 3220{
2098 int i; 3221 int i;
2099 3222
2100 /* adjust periodics after time jump */ 3223 /* adjust periodics after time jump */
… …
2103 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3226 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2104 3227
2105 if (w->reschedule_cb) 3228 if (w->reschedule_cb)
2106 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3229 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2107 else if (w->interval) 3230 else if (w->interval)
2108 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3231 periodic_recalc (EV_A_ w);
2109 3232
2110 ANHE_at_cache (periodics [i]); 3233 ANHE_at_cache (periodics [i]);
2111 } 3234 }
2112 3235
2113 reheap (periodics, periodiccnt); 3236 reheap (periodics, periodiccnt);
2114} 3237}
2115#endif 3238#endif
2116 3239
2117/* adjust all timers by a given offset */ 3240/* adjust all timers by a given offset */
2118static void noinline 3241static void noinline ecb_cold
2119timers_reschedule (EV_P_ ev_tstamp adjust) 3242timers_reschedule (EV_P_ ev_tstamp adjust)
2120{ 3243{
2121 int i; 3244 int i;
2122 3245
2123 for (i = 0; i < timercnt; ++i) 3246 for (i = 0; i < timercnt; ++i)
… …
2127 ANHE_at_cache (*he); 3250 ANHE_at_cache (*he);
2128 } 3251 }
2129} 3252}
2130 3253
2131/* fetch new monotonic and realtime times from the kernel */ 3254/* fetch new monotonic and realtime times from the kernel */
2132/* also detetc if there was a timejump, and act accordingly */ 3255/* also detect if there was a timejump, and act accordingly */
2133inline_speed void 3256inline_speed void
2134time_update (EV_P_ ev_tstamp max_block) 3257time_update (EV_P_ ev_tstamp max_block)
2135{ 3258{
2136#if EV_USE_MONOTONIC 3259#if EV_USE_MONOTONIC
2137 if (expect_true (have_monotonic)) 3260 if (expect_true (have_monotonic))
… …
2160 * doesn't hurt either as we only do this on time-jumps or 3283 * doesn't hurt either as we only do this on time-jumps or
2161 * in the unlikely event of having been preempted here. 3284 * in the unlikely event of having been preempted here.
2162 */ 3285 */
2163 for (i = 4; --i; ) 3286 for (i = 4; --i; )
2164 { 3287 {
3288 ev_tstamp diff;
2165 rtmn_diff = ev_rt_now - mn_now; 3289 rtmn_diff = ev_rt_now - mn_now;
2166 3290
3291 diff = odiff - rtmn_diff;
3292
2167 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3293 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2168 return; /* all is well */ 3294 return; /* all is well */
2169 3295
2170 ev_rt_now = ev_time (); 3296 ev_rt_now = ev_time ();
2171 mn_now = get_clock (); 3297 mn_now = get_clock ();
2172 now_floor = mn_now; 3298 now_floor = mn_now;
… …
2194 3320
2195 mn_now = ev_rt_now; 3321 mn_now = ev_rt_now;
2196 } 3322 }
2197} 3323}
2198 3324
2199void 3325int
2200ev_loop (EV_P_ int flags) 3326ev_run (EV_P_ int flags)
2201{ 3327{
2202#if EV_MINIMAL < 2 3328#if EV_FEATURE_API
2203 ++loop_depth; 3329 ++loop_depth;
2204#endif 3330#endif
2205 3331
2206 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3332 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2207 3333
2208 loop_done = EVUNLOOP_CANCEL; 3334 loop_done = EVBREAK_CANCEL;
2209 3335
2210 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3336 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2211 3337
2212 do 3338 do
2213 { 3339 {
2214#if EV_VERIFY >= 2 3340#if EV_VERIFY >= 2
2215 ev_loop_verify (EV_A); 3341 ev_verify (EV_A);
2216#endif 3342#endif
2217 3343
2218#ifndef _WIN32 3344#ifndef _WIN32
2219 if (expect_false (curpid)) /* penalise the forking check even more */ 3345 if (expect_false (curpid)) /* penalise the forking check even more */
2220 if (expect_false (getpid () != curpid)) 3346 if (expect_false (getpid () != curpid))
… …
2232 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3358 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2233 EV_INVOKE_PENDING; 3359 EV_INVOKE_PENDING;
2234 } 3360 }
2235#endif 3361#endif
2236 3362
3363#if EV_PREPARE_ENABLE
2237 /* queue prepare watchers (and execute them) */ 3364 /* queue prepare watchers (and execute them) */
2238 if (expect_false (preparecnt)) 3365 if (expect_false (preparecnt))
2239 { 3366 {
2240 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3367 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2241 EV_INVOKE_PENDING; 3368 EV_INVOKE_PENDING;
2242 } 3369 }
3370#endif
2243 3371
2244 if (expect_false (loop_done)) 3372 if (expect_false (loop_done))
2245 break; 3373 break;
2246 3374
2247 /* we might have forked, so reify kernel state if necessary */ 3375 /* we might have forked, so reify kernel state if necessary */
… …
2254 /* calculate blocking time */ 3382 /* calculate blocking time */
2255 { 3383 {
2256 ev_tstamp waittime = 0.; 3384 ev_tstamp waittime = 0.;
2257 ev_tstamp sleeptime = 0.; 3385 ev_tstamp sleeptime = 0.;
2258 3386
3387 /* remember old timestamp for io_blocktime calculation */
3388 ev_tstamp prev_mn_now = mn_now;
3389
3390 /* update time to cancel out callback processing overhead */
3391 time_update (EV_A_ 1e100);
3392
3393 /* from now on, we want a pipe-wake-up */
3394 pipe_write_wanted = 1;
3395
3396 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3397
2259 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3398 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2260 { 3399 {
2261 /* remember old timestamp for io_blocktime calculation */
2262 ev_tstamp prev_mn_now = mn_now;
2263
2264 /* update time to cancel out callback processing overhead */
2265 time_update (EV_A_ 1e100);
2266
2267 waittime = MAX_BLOCKTIME; 3400 waittime = MAX_BLOCKTIME;
2268 3401
2269 if (timercnt) 3402 if (timercnt)
2270 { 3403 {
2271 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3404 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2272 if (waittime > to) waittime = to; 3405 if (waittime > to) waittime = to;
2273 } 3406 }
2274 3407
2275#if EV_PERIODIC_ENABLE 3408#if EV_PERIODIC_ENABLE
2276 if (periodiccnt) 3409 if (periodiccnt)
2277 { 3410 {
2278 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3411 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2279 if (waittime > to) waittime = to; 3412 if (waittime > to) waittime = to;
2280 } 3413 }
2281#endif 3414#endif
2282 3415
2283 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3416 /* don't let timeouts decrease the waittime below timeout_blocktime */
2284 if (expect_false (waittime < timeout_blocktime)) 3417 if (expect_false (waittime < timeout_blocktime))
2285 waittime = timeout_blocktime; 3418 waittime = timeout_blocktime;
3419
3420 /* at this point, we NEED to wait, so we have to ensure */
3421 /* to pass a minimum nonzero value to the backend */
3422 if (expect_false (waittime < backend_mintime))
3423 waittime = backend_mintime;
2286 3424
2287 /* extra check because io_blocktime is commonly 0 */ 3425 /* extra check because io_blocktime is commonly 0 */
2288 if (expect_false (io_blocktime)) 3426 if (expect_false (io_blocktime))
2289 { 3427 {
2290 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3428 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2291 3429
2292 if (sleeptime > waittime - backend_fudge) 3430 if (sleeptime > waittime - backend_mintime)
2293 sleeptime = waittime - backend_fudge; 3431 sleeptime = waittime - backend_mintime;
2294 3432
2295 if (expect_true (sleeptime > 0.)) 3433 if (expect_true (sleeptime > 0.))
2296 { 3434 {
2297 ev_sleep (sleeptime); 3435 ev_sleep (sleeptime);
2298 waittime -= sleeptime; 3436 waittime -= sleeptime;
2299 } 3437 }
2300 } 3438 }
2301 } 3439 }
2302 3440
2303#if EV_MINIMAL < 2 3441#if EV_FEATURE_API
2304 ++loop_count; 3442 ++loop_count;
2305#endif 3443#endif
2306 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3444 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2307 backend_poll (EV_A_ waittime); 3445 backend_poll (EV_A_ waittime);
2308 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3446 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3447
3448 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3449
3450 ECB_MEMORY_FENCE_ACQUIRE;
3451 if (pipe_write_skipped)
3452 {
3453 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3454 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3455 }
3456
2309 3457
2310 /* update ev_rt_now, do magic */ 3458 /* update ev_rt_now, do magic */
2311 time_update (EV_A_ waittime + sleeptime); 3459 time_update (EV_A_ waittime + sleeptime);
2312 } 3460 }
2313 3461
… …
2320#if EV_IDLE_ENABLE 3468#if EV_IDLE_ENABLE
2321 /* queue idle watchers unless other events are pending */ 3469 /* queue idle watchers unless other events are pending */
2322 idle_reify (EV_A); 3470 idle_reify (EV_A);
2323#endif 3471#endif
2324 3472
3473#if EV_CHECK_ENABLE
2325 /* queue check watchers, to be executed first */ 3474 /* queue check watchers, to be executed first */
2326 if (expect_false (checkcnt)) 3475 if (expect_false (checkcnt))
2327 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3476 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3477#endif
2328 3478
2329 EV_INVOKE_PENDING; 3479 EV_INVOKE_PENDING;
2330 } 3480 }
2331 while (expect_true ( 3481 while (expect_true (
2332 activecnt 3482 activecnt
2333 && !loop_done 3483 && !loop_done
2334 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3484 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2335 )); 3485 ));
2336 3486
2337 if (loop_done == EVUNLOOP_ONE) 3487 if (loop_done == EVBREAK_ONE)
2338 loop_done = EVUNLOOP_CANCEL; 3488 loop_done = EVBREAK_CANCEL;
2339 3489
2340#if EV_MINIMAL < 2 3490#if EV_FEATURE_API
2341 --loop_depth; 3491 --loop_depth;
2342#endif 3492#endif
3493
3494 return activecnt;
2343} 3495}
2344 3496
2345void 3497void
2346ev_unloop (EV_P_ int how) 3498ev_break (EV_P_ int how) EV_THROW
2347{ 3499{
2348 loop_done = how; 3500 loop_done = how;
2349} 3501}
2350 3502
2351void 3503void
2352ev_ref (EV_P) 3504ev_ref (EV_P) EV_THROW
2353{ 3505{
2354 ++activecnt; 3506 ++activecnt;
2355} 3507}
2356 3508
2357void 3509void
2358ev_unref (EV_P) 3510ev_unref (EV_P) EV_THROW
2359{ 3511{
2360 --activecnt; 3512 --activecnt;
2361} 3513}
2362 3514
2363void 3515void
2364ev_now_update (EV_P) 3516ev_now_update (EV_P) EV_THROW
2365{ 3517{
2366 time_update (EV_A_ 1e100); 3518 time_update (EV_A_ 1e100);
2367} 3519}
2368 3520
2369void 3521void
2370ev_suspend (EV_P) 3522ev_suspend (EV_P) EV_THROW
2371{ 3523{
2372 ev_now_update (EV_A); 3524 ev_now_update (EV_A);
2373} 3525}
2374 3526
2375void 3527void
2376ev_resume (EV_P) 3528ev_resume (EV_P) EV_THROW
2377{ 3529{
2378 ev_tstamp mn_prev = mn_now; 3530 ev_tstamp mn_prev = mn_now;
2379 3531
2380 ev_now_update (EV_A); 3532 ev_now_update (EV_A);
2381 timers_reschedule (EV_A_ mn_now - mn_prev); 3533 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2420 w->pending = 0; 3572 w->pending = 0;
2421 } 3573 }
2422} 3574}
2423 3575
2424int 3576int
2425ev_clear_pending (EV_P_ void *w) 3577ev_clear_pending (EV_P_ void *w) EV_THROW
2426{ 3578{
2427 W w_ = (W)w; 3579 W w_ = (W)w;
2428 int pending = w_->pending; 3580 int pending = w_->pending;
2429 3581
2430 if (expect_true (pending)) 3582 if (expect_true (pending))
… …
2463} 3615}
2464 3616
2465/*****************************************************************************/ 3617/*****************************************************************************/
2466 3618
2467void noinline 3619void noinline
2468ev_io_start (EV_P_ ev_io *w) 3620ev_io_start (EV_P_ ev_io *w) EV_THROW
2469{ 3621{
2470 int fd = w->fd; 3622 int fd = w->fd;
2471 3623
2472 if (expect_false (ev_is_active (w))) 3624 if (expect_false (ev_is_active (w)))
2473 return; 3625 return;
2474 3626
2475 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3627 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2476 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3628 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2477 3629
2478 EV_FREQUENT_CHECK; 3630 EV_FREQUENT_CHECK;
2479 3631
2480 ev_start (EV_A_ (W)w, 1); 3632 ev_start (EV_A_ (W)w, 1);
2481 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3633 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2482 wlist_add (&anfds[fd].head, (WL)w); 3634 wlist_add (&anfds[fd].head, (WL)w);
2483 3635
3636 /* common bug, apparently */
3637 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3638
2484 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3639 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2485 w->events &= ~EV__IOFDSET; 3640 w->events &= ~EV__IOFDSET;
2486 3641
2487 EV_FREQUENT_CHECK; 3642 EV_FREQUENT_CHECK;
2488} 3643}
2489 3644
2490void noinline 3645void noinline
2491ev_io_stop (EV_P_ ev_io *w) 3646ev_io_stop (EV_P_ ev_io *w) EV_THROW
2492{ 3647{
2493 clear_pending (EV_A_ (W)w); 3648 clear_pending (EV_A_ (W)w);
2494 if (expect_false (!ev_is_active (w))) 3649 if (expect_false (!ev_is_active (w)))
2495 return; 3650 return;
2496 3651
… …
2499 EV_FREQUENT_CHECK; 3654 EV_FREQUENT_CHECK;
2500 3655
2501 wlist_del (&anfds[w->fd].head, (WL)w); 3656 wlist_del (&anfds[w->fd].head, (WL)w);
2502 ev_stop (EV_A_ (W)w); 3657 ev_stop (EV_A_ (W)w);
2503 3658
2504 fd_change (EV_A_ w->fd, 1); 3659 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2505 3660
2506 EV_FREQUENT_CHECK; 3661 EV_FREQUENT_CHECK;
2507} 3662}
2508 3663
2509void noinline 3664void noinline
2510ev_timer_start (EV_P_ ev_timer *w) 3665ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2511{ 3666{
2512 if (expect_false (ev_is_active (w))) 3667 if (expect_false (ev_is_active (w)))
2513 return; 3668 return;
2514 3669
2515 ev_at (w) += mn_now; 3670 ev_at (w) += mn_now;
… …
2529 3684
2530 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3685 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2531} 3686}
2532 3687
2533void noinline 3688void noinline
2534ev_timer_stop (EV_P_ ev_timer *w) 3689ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2535{ 3690{
2536 clear_pending (EV_A_ (W)w); 3691 clear_pending (EV_A_ (W)w);
2537 if (expect_false (!ev_is_active (w))) 3692 if (expect_false (!ev_is_active (w)))
2538 return; 3693 return;
2539 3694
… …
2551 timers [active] = timers [timercnt + HEAP0]; 3706 timers [active] = timers [timercnt + HEAP0];
2552 adjustheap (timers, timercnt, active); 3707 adjustheap (timers, timercnt, active);
2553 } 3708 }
2554 } 3709 }
2555 3710
2556 EV_FREQUENT_CHECK;
2557
2558 ev_at (w) -= mn_now; 3711 ev_at (w) -= mn_now;
2559 3712
2560 ev_stop (EV_A_ (W)w); 3713 ev_stop (EV_A_ (W)w);
3714
3715 EV_FREQUENT_CHECK;
2561} 3716}
2562 3717
2563void noinline 3718void noinline
2564ev_timer_again (EV_P_ ev_timer *w) 3719ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2565{ 3720{
2566 EV_FREQUENT_CHECK; 3721 EV_FREQUENT_CHECK;
3722
3723 clear_pending (EV_A_ (W)w);
2567 3724
2568 if (ev_is_active (w)) 3725 if (ev_is_active (w))
2569 { 3726 {
2570 if (w->repeat) 3727 if (w->repeat)
2571 { 3728 {
… …
2584 3741
2585 EV_FREQUENT_CHECK; 3742 EV_FREQUENT_CHECK;
2586} 3743}
2587 3744
2588ev_tstamp 3745ev_tstamp
2589ev_timer_remaining (EV_P_ ev_timer *w) 3746ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2590{ 3747{
2591 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3748 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2592} 3749}
2593 3750
2594#if EV_PERIODIC_ENABLE 3751#if EV_PERIODIC_ENABLE
2595void noinline 3752void noinline
2596ev_periodic_start (EV_P_ ev_periodic *w) 3753ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2597{ 3754{
2598 if (expect_false (ev_is_active (w))) 3755 if (expect_false (ev_is_active (w)))
2599 return; 3756 return;
2600 3757
2601 if (w->reschedule_cb) 3758 if (w->reschedule_cb)
2602 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3759 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2603 else if (w->interval) 3760 else if (w->interval)
2604 { 3761 {
2605 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3762 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2606 /* this formula differs from the one in periodic_reify because we do not always round up */ 3763 periodic_recalc (EV_A_ w);
2607 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2608 } 3764 }
2609 else 3765 else
2610 ev_at (w) = w->offset; 3766 ev_at (w) = w->offset;
2611 3767
2612 EV_FREQUENT_CHECK; 3768 EV_FREQUENT_CHECK;
… …
2622 3778
2623 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3779 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2624} 3780}
2625 3781
2626void noinline 3782void noinline
2627ev_periodic_stop (EV_P_ ev_periodic *w) 3783ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2628{ 3784{
2629 clear_pending (EV_A_ (W)w); 3785 clear_pending (EV_A_ (W)w);
2630 if (expect_false (!ev_is_active (w))) 3786 if (expect_false (!ev_is_active (w)))
2631 return; 3787 return;
2632 3788
… …
2644 periodics [active] = periodics [periodiccnt + HEAP0]; 3800 periodics [active] = periodics [periodiccnt + HEAP0];
2645 adjustheap (periodics, periodiccnt, active); 3801 adjustheap (periodics, periodiccnt, active);
2646 } 3802 }
2647 } 3803 }
2648 3804
2649 EV_FREQUENT_CHECK;
2650
2651 ev_stop (EV_A_ (W)w); 3805 ev_stop (EV_A_ (W)w);
3806
3807 EV_FREQUENT_CHECK;
2652} 3808}
2653 3809
2654void noinline 3810void noinline
2655ev_periodic_again (EV_P_ ev_periodic *w) 3811ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2656{ 3812{
2657 /* TODO: use adjustheap and recalculation */ 3813 /* TODO: use adjustheap and recalculation */
2658 ev_periodic_stop (EV_A_ w); 3814 ev_periodic_stop (EV_A_ w);
2659 ev_periodic_start (EV_A_ w); 3815 ev_periodic_start (EV_A_ w);
2660} 3816}
… …
2662 3818
2663#ifndef SA_RESTART 3819#ifndef SA_RESTART
2664# define SA_RESTART 0 3820# define SA_RESTART 0
2665#endif 3821#endif
2666 3822
3823#if EV_SIGNAL_ENABLE
3824
2667void noinline 3825void noinline
2668ev_signal_start (EV_P_ ev_signal *w) 3826ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2669{ 3827{
2670 if (expect_false (ev_is_active (w))) 3828 if (expect_false (ev_is_active (w)))
2671 return; 3829 return;
2672 3830
2673 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3831 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2674 3832
2675#if EV_MULTIPLICITY 3833#if EV_MULTIPLICITY
2676 assert (("libev: tried to attach to a signal from two different loops", 3834 assert (("libev: a signal must not be attached to two different loops",
2677 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3835 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2678 3836
2679 signals [w->signum - 1].loop = EV_A; 3837 signals [w->signum - 1].loop = EV_A;
3838 ECB_MEMORY_FENCE_RELEASE;
2680#endif 3839#endif
2681 3840
2682 EV_FREQUENT_CHECK; 3841 EV_FREQUENT_CHECK;
2683 3842
2684#if EV_USE_SIGNALFD 3843#if EV_USE_SIGNALFD
… …
2717 if (!((WL)w)->next) 3876 if (!((WL)w)->next)
2718# if EV_USE_SIGNALFD 3877# if EV_USE_SIGNALFD
2719 if (sigfd < 0) /*TODO*/ 3878 if (sigfd < 0) /*TODO*/
2720# endif 3879# endif
2721 { 3880 {
2722# if _WIN32 3881# ifdef _WIN32
3882 evpipe_init (EV_A);
3883
2723 signal (w->signum, ev_sighandler); 3884 signal (w->signum, ev_sighandler);
2724# else 3885# else
2725 struct sigaction sa; 3886 struct sigaction sa;
2726 3887
2727 evpipe_init (EV_A); 3888 evpipe_init (EV_A);
… …
2729 sa.sa_handler = ev_sighandler; 3890 sa.sa_handler = ev_sighandler;
2730 sigfillset (&sa.sa_mask); 3891 sigfillset (&sa.sa_mask);
2731 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3892 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2732 sigaction (w->signum, &sa, 0); 3893 sigaction (w->signum, &sa, 0);
2733 3894
3895 if (origflags & EVFLAG_NOSIGMASK)
3896 {
2734 sigemptyset (&sa.sa_mask); 3897 sigemptyset (&sa.sa_mask);
2735 sigaddset (&sa.sa_mask, w->signum); 3898 sigaddset (&sa.sa_mask, w->signum);
2736 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3899 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3900 }
2737#endif 3901#endif
2738 } 3902 }
2739 3903
2740 EV_FREQUENT_CHECK; 3904 EV_FREQUENT_CHECK;
2741} 3905}
2742 3906
2743void noinline 3907void noinline
2744ev_signal_stop (EV_P_ ev_signal *w) 3908ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2745{ 3909{
2746 clear_pending (EV_A_ (W)w); 3910 clear_pending (EV_A_ (W)w);
2747 if (expect_false (!ev_is_active (w))) 3911 if (expect_false (!ev_is_active (w)))
2748 return; 3912 return;
2749 3913
… …
2758 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3922 signals [w->signum - 1].loop = 0; /* unattach from signal */
2759#endif 3923#endif
2760#if EV_USE_SIGNALFD 3924#if EV_USE_SIGNALFD
2761 if (sigfd >= 0) 3925 if (sigfd >= 0)
2762 { 3926 {
2763 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3927 sigset_t ss;
3928
3929 sigemptyset (&ss);
3930 sigaddset (&ss, w->signum);
2764 sigdelset (&sigfd_set, w->signum); 3931 sigdelset (&sigfd_set, w->signum);
3932
2765 signalfd (sigfd, &sigfd_set, 0); 3933 signalfd (sigfd, &sigfd_set, 0);
2766 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3934 sigprocmask (SIG_UNBLOCK, &ss, 0);
2767 /*TODO: maybe unblock signal? */
2768 } 3935 }
2769 else 3936 else
2770#endif 3937#endif
2771 signal (w->signum, SIG_DFL); 3938 signal (w->signum, SIG_DFL);
2772 } 3939 }
2773 3940
2774 EV_FREQUENT_CHECK; 3941 EV_FREQUENT_CHECK;
2775} 3942}
2776 3943
3944#endif
3945
3946#if EV_CHILD_ENABLE
3947
2777void 3948void
2778ev_child_start (EV_P_ ev_child *w) 3949ev_child_start (EV_P_ ev_child *w) EV_THROW
2779{ 3950{
2780#if EV_MULTIPLICITY 3951#if EV_MULTIPLICITY
2781 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3952 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2782#endif 3953#endif
2783 if (expect_false (ev_is_active (w))) 3954 if (expect_false (ev_is_active (w)))
2784 return; 3955 return;
2785 3956
2786 EV_FREQUENT_CHECK; 3957 EV_FREQUENT_CHECK;
2787 3958
2788 ev_start (EV_A_ (W)w, 1); 3959 ev_start (EV_A_ (W)w, 1);
2789 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3960 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2790 3961
2791 EV_FREQUENT_CHECK; 3962 EV_FREQUENT_CHECK;
2792} 3963}
2793 3964
2794void 3965void
2795ev_child_stop (EV_P_ ev_child *w) 3966ev_child_stop (EV_P_ ev_child *w) EV_THROW
2796{ 3967{
2797 clear_pending (EV_A_ (W)w); 3968 clear_pending (EV_A_ (W)w);
2798 if (expect_false (!ev_is_active (w))) 3969 if (expect_false (!ev_is_active (w)))
2799 return; 3970 return;
2800 3971
2801 EV_FREQUENT_CHECK; 3972 EV_FREQUENT_CHECK;
2802 3973
2803 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3974 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2804 ev_stop (EV_A_ (W)w); 3975 ev_stop (EV_A_ (W)w);
2805 3976
2806 EV_FREQUENT_CHECK; 3977 EV_FREQUENT_CHECK;
2807} 3978}
3979
3980#endif
2808 3981
2809#if EV_STAT_ENABLE 3982#if EV_STAT_ENABLE
2810 3983
2811# ifdef _WIN32 3984# ifdef _WIN32
2812# undef lstat 3985# undef lstat
… …
2818#define MIN_STAT_INTERVAL 0.1074891 3991#define MIN_STAT_INTERVAL 0.1074891
2819 3992
2820static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3993static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2821 3994
2822#if EV_USE_INOTIFY 3995#if EV_USE_INOTIFY
2823# define EV_INOTIFY_BUFSIZE 8192 3996
3997/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3998# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2824 3999
2825static void noinline 4000static void noinline
2826infy_add (EV_P_ ev_stat *w) 4001infy_add (EV_P_ ev_stat *w)
2827{ 4002{
2828 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); 4003 w->wd = inotify_add_watch (fs_fd, w->path,
4004 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4005 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4006 | IN_DONT_FOLLOW | IN_MASK_ADD);
2829 4007
2830 if (w->wd < 0) 4008 if (w->wd >= 0)
4009 {
4010 struct statfs sfs;
4011
4012 /* now local changes will be tracked by inotify, but remote changes won't */
4013 /* unless the filesystem is known to be local, we therefore still poll */
4014 /* also do poll on <2.6.25, but with normal frequency */
4015
4016 if (!fs_2625)
4017 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4018 else if (!statfs (w->path, &sfs)
4019 && (sfs.f_type == 0x1373 /* devfs */
4020 || sfs.f_type == 0x4006 /* fat */
4021 || sfs.f_type == 0x4d44 /* msdos */
4022 || sfs.f_type == 0xEF53 /* ext2/3 */
4023 || sfs.f_type == 0x72b6 /* jffs2 */
4024 || sfs.f_type == 0x858458f6 /* ramfs */
4025 || sfs.f_type == 0x5346544e /* ntfs */
4026 || sfs.f_type == 0x3153464a /* jfs */
4027 || sfs.f_type == 0x9123683e /* btrfs */
4028 || sfs.f_type == 0x52654973 /* reiser3 */
4029 || sfs.f_type == 0x01021994 /* tmpfs */
4030 || sfs.f_type == 0x58465342 /* xfs */))
4031 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
4032 else
4033 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2831 { 4034 }
4035 else
4036 {
4037 /* can't use inotify, continue to stat */
2832 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4038 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2833 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2834 4039
2835 /* monitor some parent directory for speedup hints */ 4040 /* if path is not there, monitor some parent directory for speedup hints */
2836 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4041 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2837 /* but an efficiency issue only */ 4042 /* but an efficiency issue only */
2838 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4043 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2839 { 4044 {
2840 char path [4096]; 4045 char path [4096];
… …
2850 if (!pend || pend == path) 4055 if (!pend || pend == path)
2851 break; 4056 break;
2852 4057
2853 *pend = 0; 4058 *pend = 0;
2854 w->wd = inotify_add_watch (fs_fd, path, mask); 4059 w->wd = inotify_add_watch (fs_fd, path, mask);
2855 } 4060 }
2856 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4061 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2857 } 4062 }
2858 } 4063 }
2859 4064
2860 if (w->wd >= 0) 4065 if (w->wd >= 0)
2861 {
2862 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4066 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2863 4067
2864 /* now local changes will be tracked by inotify, but remote changes won't */ 4068 /* now re-arm timer, if required */
2865 /* unless the filesystem it known to be local, we therefore still poll */ 4069 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2866 /* also do poll on <2.6.25, but with normal frequency */
2867 struct statfs sfs;
2868
2869 if (fs_2625 && !statfs (w->path, &sfs))
2870 if (sfs.f_type == 0x1373 /* devfs */
2871 || sfs.f_type == 0xEF53 /* ext2/3 */
2872 || sfs.f_type == 0x3153464a /* jfs */
2873 || sfs.f_type == 0x52654973 /* reiser3 */
2874 || sfs.f_type == 0x01021994 /* tempfs */
2875 || sfs.f_type == 0x58465342 /* xfs */)
2876 return;
2877
2878 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2879 ev_timer_again (EV_A_ &w->timer); 4070 ev_timer_again (EV_A_ &w->timer);
2880 } 4071 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2881} 4072}
2882 4073
2883static void noinline 4074static void noinline
2884infy_del (EV_P_ ev_stat *w) 4075infy_del (EV_P_ ev_stat *w)
2885{ 4076{
… …
2888 4079
2889 if (wd < 0) 4080 if (wd < 0)
2890 return; 4081 return;
2891 4082
2892 w->wd = -2; 4083 w->wd = -2;
2893 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4084 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2894 wlist_del (&fs_hash [slot].head, (WL)w); 4085 wlist_del (&fs_hash [slot].head, (WL)w);
2895 4086
2896 /* remove this watcher, if others are watching it, they will rearm */ 4087 /* remove this watcher, if others are watching it, they will rearm */
2897 inotify_rm_watch (fs_fd, wd); 4088 inotify_rm_watch (fs_fd, wd);
2898} 4089}
… …
2900static void noinline 4091static void noinline
2901infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4092infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2902{ 4093{
2903 if (slot < 0) 4094 if (slot < 0)
2904 /* overflow, need to check for all hash slots */ 4095 /* overflow, need to check for all hash slots */
2905 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4096 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2906 infy_wd (EV_A_ slot, wd, ev); 4097 infy_wd (EV_A_ slot, wd, ev);
2907 else 4098 else
2908 { 4099 {
2909 WL w_; 4100 WL w_;
2910 4101
2911 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4102 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2912 { 4103 {
2913 ev_stat *w = (ev_stat *)w_; 4104 ev_stat *w = (ev_stat *)w_;
2914 w_ = w_->next; /* lets us remove this watcher and all before it */ 4105 w_ = w_->next; /* lets us remove this watcher and all before it */
2915 4106
2916 if (w->wd == wd || wd == -1) 4107 if (w->wd == wd || wd == -1)
2917 { 4108 {
2918 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4109 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2919 { 4110 {
2920 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4111 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2921 w->wd = -1; 4112 w->wd = -1;
2922 infy_add (EV_A_ w); /* re-add, no matter what */ 4113 infy_add (EV_A_ w); /* re-add, no matter what */
2923 } 4114 }
2924 4115
2925 stat_timer_cb (EV_A_ &w->timer, 0); 4116 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2930 4121
2931static void 4122static void
2932infy_cb (EV_P_ ev_io *w, int revents) 4123infy_cb (EV_P_ ev_io *w, int revents)
2933{ 4124{
2934 char buf [EV_INOTIFY_BUFSIZE]; 4125 char buf [EV_INOTIFY_BUFSIZE];
2935 struct inotify_event *ev = (struct inotify_event *)buf;
2936 int ofs; 4126 int ofs;
2937 int len = read (fs_fd, buf, sizeof (buf)); 4127 int len = read (fs_fd, buf, sizeof (buf));
2938 4128
2939 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4129 for (ofs = 0; ofs < len; )
4130 {
4131 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2940 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4132 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4133 ofs += sizeof (struct inotify_event) + ev->len;
4134 }
2941} 4135}
2942 4136
2943inline_size void 4137inline_size void ecb_cold
2944check_2625 (EV_P) 4138ev_check_2625 (EV_P)
2945{ 4139{
2946 /* kernels < 2.6.25 are borked 4140 /* kernels < 2.6.25 are borked
2947 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4141 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2948 */ 4142 */
2949 struct utsname buf; 4143 if (ev_linux_version () < 0x020619)
2950 int major, minor, micro;
2951
2952 if (uname (&buf))
2953 return; 4144 return;
2954 4145
2955 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2956 return;
2957
2958 if (major < 2
2959 || (major == 2 && minor < 6)
2960 || (major == 2 && minor == 6 && micro < 25))
2961 return;
2962
2963 fs_2625 = 1; 4146 fs_2625 = 1;
4147}
4148
4149inline_size int
4150infy_newfd (void)
4151{
4152#if defined IN_CLOEXEC && defined IN_NONBLOCK
4153 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4154 if (fd >= 0)
4155 return fd;
4156#endif
4157 return inotify_init ();
2964} 4158}
2965 4159
2966inline_size void 4160inline_size void
2967infy_init (EV_P) 4161infy_init (EV_P)
2968{ 4162{
2969 if (fs_fd != -2) 4163 if (fs_fd != -2)
2970 return; 4164 return;
2971 4165
2972 fs_fd = -1; 4166 fs_fd = -1;
2973 4167
2974 check_2625 (EV_A); 4168 ev_check_2625 (EV_A);
2975 4169
2976 fs_fd = inotify_init (); 4170 fs_fd = infy_newfd ();
2977 4171
2978 if (fs_fd >= 0) 4172 if (fs_fd >= 0)
2979 { 4173 {
4174 fd_intern (fs_fd);
2980 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4175 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2981 ev_set_priority (&fs_w, EV_MAXPRI); 4176 ev_set_priority (&fs_w, EV_MAXPRI);
2982 ev_io_start (EV_A_ &fs_w); 4177 ev_io_start (EV_A_ &fs_w);
4178 ev_unref (EV_A);
2983 } 4179 }
2984} 4180}
2985 4181
2986inline_size void 4182inline_size void
2987infy_fork (EV_P) 4183infy_fork (EV_P)
… …
2989 int slot; 4185 int slot;
2990 4186
2991 if (fs_fd < 0) 4187 if (fs_fd < 0)
2992 return; 4188 return;
2993 4189
4190 ev_ref (EV_A);
4191 ev_io_stop (EV_A_ &fs_w);
2994 close (fs_fd); 4192 close (fs_fd);
2995 fs_fd = inotify_init (); 4193 fs_fd = infy_newfd ();
2996 4194
4195 if (fs_fd >= 0)
4196 {
4197 fd_intern (fs_fd);
4198 ev_io_set (&fs_w, fs_fd, EV_READ);
4199 ev_io_start (EV_A_ &fs_w);
4200 ev_unref (EV_A);
4201 }
4202
2997 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4203 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2998 { 4204 {
2999 WL w_ = fs_hash [slot].head; 4205 WL w_ = fs_hash [slot].head;
3000 fs_hash [slot].head = 0; 4206 fs_hash [slot].head = 0;
3001 4207
3002 while (w_) 4208 while (w_)
… …
3007 w->wd = -1; 4213 w->wd = -1;
3008 4214
3009 if (fs_fd >= 0) 4215 if (fs_fd >= 0)
3010 infy_add (EV_A_ w); /* re-add, no matter what */ 4216 infy_add (EV_A_ w); /* re-add, no matter what */
3011 else 4217 else
4218 {
4219 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4220 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3012 ev_timer_again (EV_A_ &w->timer); 4221 ev_timer_again (EV_A_ &w->timer);
4222 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4223 }
3013 } 4224 }
3014 } 4225 }
3015} 4226}
3016 4227
3017#endif 4228#endif
… …
3021#else 4232#else
3022# define EV_LSTAT(p,b) lstat (p, b) 4233# define EV_LSTAT(p,b) lstat (p, b)
3023#endif 4234#endif
3024 4235
3025void 4236void
3026ev_stat_stat (EV_P_ ev_stat *w) 4237ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3027{ 4238{
3028 if (lstat (w->path, &w->attr) < 0) 4239 if (lstat (w->path, &w->attr) < 0)
3029 w->attr.st_nlink = 0; 4240 w->attr.st_nlink = 0;
3030 else if (!w->attr.st_nlink) 4241 else if (!w->attr.st_nlink)
3031 w->attr.st_nlink = 1; 4242 w->attr.st_nlink = 1;
… …
3034static void noinline 4245static void noinline
3035stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4246stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3036{ 4247{
3037 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4248 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3038 4249
3039 /* we copy this here each the time so that */ 4250 ev_statdata prev = w->attr;
3040 /* prev has the old value when the callback gets invoked */
3041 w->prev = w->attr;
3042 ev_stat_stat (EV_A_ w); 4251 ev_stat_stat (EV_A_ w);
3043 4252
3044 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4253 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3045 if ( 4254 if (
3046 w->prev.st_dev != w->attr.st_dev 4255 prev.st_dev != w->attr.st_dev
3047 || w->prev.st_ino != w->attr.st_ino 4256 || prev.st_ino != w->attr.st_ino
3048 || w->prev.st_mode != w->attr.st_mode 4257 || prev.st_mode != w->attr.st_mode
3049 || w->prev.st_nlink != w->attr.st_nlink 4258 || prev.st_nlink != w->attr.st_nlink
3050 || w->prev.st_uid != w->attr.st_uid 4259 || prev.st_uid != w->attr.st_uid
3051 || w->prev.st_gid != w->attr.st_gid 4260 || prev.st_gid != w->attr.st_gid
3052 || w->prev.st_rdev != w->attr.st_rdev 4261 || prev.st_rdev != w->attr.st_rdev
3053 || w->prev.st_size != w->attr.st_size 4262 || prev.st_size != w->attr.st_size
3054 || w->prev.st_atime != w->attr.st_atime 4263 || prev.st_atime != w->attr.st_atime
3055 || w->prev.st_mtime != w->attr.st_mtime 4264 || prev.st_mtime != w->attr.st_mtime
3056 || w->prev.st_ctime != w->attr.st_ctime 4265 || prev.st_ctime != w->attr.st_ctime
3057 ) { 4266 ) {
4267 /* we only update w->prev on actual differences */
4268 /* in case we test more often than invoke the callback, */
4269 /* to ensure that prev is always different to attr */
4270 w->prev = prev;
4271
3058 #if EV_USE_INOTIFY 4272 #if EV_USE_INOTIFY
3059 if (fs_fd >= 0) 4273 if (fs_fd >= 0)
3060 { 4274 {
3061 infy_del (EV_A_ w); 4275 infy_del (EV_A_ w);
3062 infy_add (EV_A_ w); 4276 infy_add (EV_A_ w);
… …
3067 ev_feed_event (EV_A_ w, EV_STAT); 4281 ev_feed_event (EV_A_ w, EV_STAT);
3068 } 4282 }
3069} 4283}
3070 4284
3071void 4285void
3072ev_stat_start (EV_P_ ev_stat *w) 4286ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3073{ 4287{
3074 if (expect_false (ev_is_active (w))) 4288 if (expect_false (ev_is_active (w)))
3075 return; 4289 return;
3076 4290
3077 ev_stat_stat (EV_A_ w); 4291 ev_stat_stat (EV_A_ w);
… …
3087 4301
3088 if (fs_fd >= 0) 4302 if (fs_fd >= 0)
3089 infy_add (EV_A_ w); 4303 infy_add (EV_A_ w);
3090 else 4304 else
3091#endif 4305#endif
4306 {
3092 ev_timer_again (EV_A_ &w->timer); 4307 ev_timer_again (EV_A_ &w->timer);
4308 ev_unref (EV_A);
4309 }
3093 4310
3094 ev_start (EV_A_ (W)w, 1); 4311 ev_start (EV_A_ (W)w, 1);
3095 4312
3096 EV_FREQUENT_CHECK; 4313 EV_FREQUENT_CHECK;
3097} 4314}
3098 4315
3099void 4316void
3100ev_stat_stop (EV_P_ ev_stat *w) 4317ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3101{ 4318{
3102 clear_pending (EV_A_ (W)w); 4319 clear_pending (EV_A_ (W)w);
3103 if (expect_false (!ev_is_active (w))) 4320 if (expect_false (!ev_is_active (w)))
3104 return; 4321 return;
3105 4322
3106 EV_FREQUENT_CHECK; 4323 EV_FREQUENT_CHECK;
3107 4324
3108#if EV_USE_INOTIFY 4325#if EV_USE_INOTIFY
3109 infy_del (EV_A_ w); 4326 infy_del (EV_A_ w);
3110#endif 4327#endif
4328
4329 if (ev_is_active (&w->timer))
4330 {
4331 ev_ref (EV_A);
3111 ev_timer_stop (EV_A_ &w->timer); 4332 ev_timer_stop (EV_A_ &w->timer);
4333 }
3112 4334
3113 ev_stop (EV_A_ (W)w); 4335 ev_stop (EV_A_ (W)w);
3114 4336
3115 EV_FREQUENT_CHECK; 4337 EV_FREQUENT_CHECK;
3116} 4338}
3117#endif 4339#endif
3118 4340
3119#if EV_IDLE_ENABLE 4341#if EV_IDLE_ENABLE
3120void 4342void
3121ev_idle_start (EV_P_ ev_idle *w) 4343ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3122{ 4344{
3123 if (expect_false (ev_is_active (w))) 4345 if (expect_false (ev_is_active (w)))
3124 return; 4346 return;
3125 4347
3126 pri_adjust (EV_A_ (W)w); 4348 pri_adjust (EV_A_ (W)w);
… …
3139 4361
3140 EV_FREQUENT_CHECK; 4362 EV_FREQUENT_CHECK;
3141} 4363}
3142 4364
3143void 4365void
3144ev_idle_stop (EV_P_ ev_idle *w) 4366ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3145{ 4367{
3146 clear_pending (EV_A_ (W)w); 4368 clear_pending (EV_A_ (W)w);
3147 if (expect_false (!ev_is_active (w))) 4369 if (expect_false (!ev_is_active (w)))
3148 return; 4370 return;
3149 4371
… …
3161 4383
3162 EV_FREQUENT_CHECK; 4384 EV_FREQUENT_CHECK;
3163} 4385}
3164#endif 4386#endif
3165 4387
4388#if EV_PREPARE_ENABLE
3166void 4389void
3167ev_prepare_start (EV_P_ ev_prepare *w) 4390ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3168{ 4391{
3169 if (expect_false (ev_is_active (w))) 4392 if (expect_false (ev_is_active (w)))
3170 return; 4393 return;
3171 4394
3172 EV_FREQUENT_CHECK; 4395 EV_FREQUENT_CHECK;
… …
3177 4400
3178 EV_FREQUENT_CHECK; 4401 EV_FREQUENT_CHECK;
3179} 4402}
3180 4403
3181void 4404void
3182ev_prepare_stop (EV_P_ ev_prepare *w) 4405ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3183{ 4406{
3184 clear_pending (EV_A_ (W)w); 4407 clear_pending (EV_A_ (W)w);
3185 if (expect_false (!ev_is_active (w))) 4408 if (expect_false (!ev_is_active (w)))
3186 return; 4409 return;
3187 4410
… …
3196 4419
3197 ev_stop (EV_A_ (W)w); 4420 ev_stop (EV_A_ (W)w);
3198 4421
3199 EV_FREQUENT_CHECK; 4422 EV_FREQUENT_CHECK;
3200} 4423}
4424#endif
3201 4425
4426#if EV_CHECK_ENABLE
3202void 4427void
3203ev_check_start (EV_P_ ev_check *w) 4428ev_check_start (EV_P_ ev_check *w) EV_THROW
3204{ 4429{
3205 if (expect_false (ev_is_active (w))) 4430 if (expect_false (ev_is_active (w)))
3206 return; 4431 return;
3207 4432
3208 EV_FREQUENT_CHECK; 4433 EV_FREQUENT_CHECK;
… …
3213 4438
3214 EV_FREQUENT_CHECK; 4439 EV_FREQUENT_CHECK;
3215} 4440}
3216 4441
3217void 4442void
3218ev_check_stop (EV_P_ ev_check *w) 4443ev_check_stop (EV_P_ ev_check *w) EV_THROW
3219{ 4444{
3220 clear_pending (EV_A_ (W)w); 4445 clear_pending (EV_A_ (W)w);
3221 if (expect_false (!ev_is_active (w))) 4446 if (expect_false (!ev_is_active (w)))
3222 return; 4447 return;
3223 4448
… …
3232 4457
3233 ev_stop (EV_A_ (W)w); 4458 ev_stop (EV_A_ (W)w);
3234 4459
3235 EV_FREQUENT_CHECK; 4460 EV_FREQUENT_CHECK;
3236} 4461}
4462#endif
3237 4463
3238#if EV_EMBED_ENABLE 4464#if EV_EMBED_ENABLE
3239void noinline 4465void noinline
3240ev_embed_sweep (EV_P_ ev_embed *w) 4466ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3241{ 4467{
3242 ev_loop (w->other, EVLOOP_NONBLOCK); 4468 ev_run (w->other, EVRUN_NOWAIT);
3243} 4469}
3244 4470
3245static void 4471static void
3246embed_io_cb (EV_P_ ev_io *io, int revents) 4472embed_io_cb (EV_P_ ev_io *io, int revents)
3247{ 4473{
3248 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4474 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3249 4475
3250 if (ev_cb (w)) 4476 if (ev_cb (w))
3251 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4477 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3252 else 4478 else
3253 ev_loop (w->other, EVLOOP_NONBLOCK); 4479 ev_run (w->other, EVRUN_NOWAIT);
3254} 4480}
3255 4481
3256static void 4482static void
3257embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4483embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3258{ 4484{
… …
3262 EV_P = w->other; 4488 EV_P = w->other;
3263 4489
3264 while (fdchangecnt) 4490 while (fdchangecnt)
3265 { 4491 {
3266 fd_reify (EV_A); 4492 fd_reify (EV_A);
3267 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4493 ev_run (EV_A_ EVRUN_NOWAIT);
3268 } 4494 }
3269 } 4495 }
3270} 4496}
3271 4497
3272static void 4498static void
… …
3278 4504
3279 { 4505 {
3280 EV_P = w->other; 4506 EV_P = w->other;
3281 4507
3282 ev_loop_fork (EV_A); 4508 ev_loop_fork (EV_A);
3283 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4509 ev_run (EV_A_ EVRUN_NOWAIT);
3284 } 4510 }
3285 4511
3286 ev_embed_start (EV_A_ w); 4512 ev_embed_start (EV_A_ w);
3287} 4513}
3288 4514
… …
3293 ev_idle_stop (EV_A_ idle); 4519 ev_idle_stop (EV_A_ idle);
3294} 4520}
3295#endif 4521#endif
3296 4522
3297void 4523void
3298ev_embed_start (EV_P_ ev_embed *w) 4524ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3299{ 4525{
3300 if (expect_false (ev_is_active (w))) 4526 if (expect_false (ev_is_active (w)))
3301 return; 4527 return;
3302 4528
3303 { 4529 {
… …
3324 4550
3325 EV_FREQUENT_CHECK; 4551 EV_FREQUENT_CHECK;
3326} 4552}
3327 4553
3328void 4554void
3329ev_embed_stop (EV_P_ ev_embed *w) 4555ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3330{ 4556{
3331 clear_pending (EV_A_ (W)w); 4557 clear_pending (EV_A_ (W)w);
3332 if (expect_false (!ev_is_active (w))) 4558 if (expect_false (!ev_is_active (w)))
3333 return; 4559 return;
3334 4560
… …
3336 4562
3337 ev_io_stop (EV_A_ &w->io); 4563 ev_io_stop (EV_A_ &w->io);
3338 ev_prepare_stop (EV_A_ &w->prepare); 4564 ev_prepare_stop (EV_A_ &w->prepare);
3339 ev_fork_stop (EV_A_ &w->fork); 4565 ev_fork_stop (EV_A_ &w->fork);
3340 4566
4567 ev_stop (EV_A_ (W)w);
4568
3341 EV_FREQUENT_CHECK; 4569 EV_FREQUENT_CHECK;
3342} 4570}
3343#endif 4571#endif
3344 4572
3345#if EV_FORK_ENABLE 4573#if EV_FORK_ENABLE
3346void 4574void
3347ev_fork_start (EV_P_ ev_fork *w) 4575ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3348{ 4576{
3349 if (expect_false (ev_is_active (w))) 4577 if (expect_false (ev_is_active (w)))
3350 return; 4578 return;
3351 4579
3352 EV_FREQUENT_CHECK; 4580 EV_FREQUENT_CHECK;
… …
3357 4585
3358 EV_FREQUENT_CHECK; 4586 EV_FREQUENT_CHECK;
3359} 4587}
3360 4588
3361void 4589void
3362ev_fork_stop (EV_P_ ev_fork *w) 4590ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3363{ 4591{
3364 clear_pending (EV_A_ (W)w); 4592 clear_pending (EV_A_ (W)w);
3365 if (expect_false (!ev_is_active (w))) 4593 if (expect_false (!ev_is_active (w)))
3366 return; 4594 return;
3367 4595
… …
3378 4606
3379 EV_FREQUENT_CHECK; 4607 EV_FREQUENT_CHECK;
3380} 4608}
3381#endif 4609#endif
3382 4610
4611#if EV_CLEANUP_ENABLE
4612void
4613ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4614{
4615 if (expect_false (ev_is_active (w)))
4616 return;
4617
4618 EV_FREQUENT_CHECK;
4619
4620 ev_start (EV_A_ (W)w, ++cleanupcnt);
4621 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4622 cleanups [cleanupcnt - 1] = w;
4623
4624 /* cleanup watchers should never keep a refcount on the loop */
4625 ev_unref (EV_A);
4626 EV_FREQUENT_CHECK;
4627}
4628
4629void
4630ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4631{
4632 clear_pending (EV_A_ (W)w);
4633 if (expect_false (!ev_is_active (w)))
4634 return;
4635
4636 EV_FREQUENT_CHECK;
4637 ev_ref (EV_A);
4638
4639 {
4640 int active = ev_active (w);
4641
4642 cleanups [active - 1] = cleanups [--cleanupcnt];
4643 ev_active (cleanups [active - 1]) = active;
4644 }
4645
4646 ev_stop (EV_A_ (W)w);
4647
4648 EV_FREQUENT_CHECK;
4649}
4650#endif
4651
3383#if EV_ASYNC_ENABLE 4652#if EV_ASYNC_ENABLE
3384void 4653void
3385ev_async_start (EV_P_ ev_async *w) 4654ev_async_start (EV_P_ ev_async *w) EV_THROW
3386{ 4655{
3387 if (expect_false (ev_is_active (w))) 4656 if (expect_false (ev_is_active (w)))
3388 return; 4657 return;
4658
4659 w->sent = 0;
3389 4660
3390 evpipe_init (EV_A); 4661 evpipe_init (EV_A);
3391 4662
3392 EV_FREQUENT_CHECK; 4663 EV_FREQUENT_CHECK;
3393 4664
… …
3397 4668
3398 EV_FREQUENT_CHECK; 4669 EV_FREQUENT_CHECK;
3399} 4670}
3400 4671
3401void 4672void
3402ev_async_stop (EV_P_ ev_async *w) 4673ev_async_stop (EV_P_ ev_async *w) EV_THROW
3403{ 4674{
3404 clear_pending (EV_A_ (W)w); 4675 clear_pending (EV_A_ (W)w);
3405 if (expect_false (!ev_is_active (w))) 4676 if (expect_false (!ev_is_active (w)))
3406 return; 4677 return;
3407 4678
… …
3418 4689
3419 EV_FREQUENT_CHECK; 4690 EV_FREQUENT_CHECK;
3420} 4691}
3421 4692
3422void 4693void
3423ev_async_send (EV_P_ ev_async *w) 4694ev_async_send (EV_P_ ev_async *w) EV_THROW
3424{ 4695{
3425 w->sent = 1; 4696 w->sent = 1;
3426 evpipe_write (EV_A_ &async_pending); 4697 evpipe_write (EV_A_ &async_pending);
3427} 4698}
3428#endif 4699#endif
… …
3465 4736
3466 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4737 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3467} 4738}
3468 4739
3469void 4740void
3470ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4741ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3471{ 4742{
3472 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4743 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3473 4744
3474 if (expect_false (!once)) 4745 if (expect_false (!once))
3475 { 4746 {
3476 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4747 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3477 return; 4748 return;
3478 } 4749 }
3479 4750
3480 once->cb = cb; 4751 once->cb = cb;
3481 once->arg = arg; 4752 once->arg = arg;
… …
3496} 4767}
3497 4768
3498/*****************************************************************************/ 4769/*****************************************************************************/
3499 4770
3500#if EV_WALK_ENABLE 4771#if EV_WALK_ENABLE
3501void 4772void ecb_cold
3502ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4773ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3503{ 4774{
3504 int i, j; 4775 int i, j;
3505 ev_watcher_list *wl, *wn; 4776 ev_watcher_list *wl, *wn;
3506 4777
3507 if (types & (EV_IO | EV_EMBED)) 4778 if (types & (EV_IO | EV_EMBED))
… …
3550 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4821 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3551#endif 4822#endif
3552 4823
3553#if EV_IDLE_ENABLE 4824#if EV_IDLE_ENABLE
3554 if (types & EV_IDLE) 4825 if (types & EV_IDLE)
3555 for (j = NUMPRI; i--; ) 4826 for (j = NUMPRI; j--; )
3556 for (i = idlecnt [j]; i--; ) 4827 for (i = idlecnt [j]; i--; )
3557 cb (EV_A_ EV_IDLE, idles [j][i]); 4828 cb (EV_A_ EV_IDLE, idles [j][i]);
3558#endif 4829#endif
3559 4830
3560#if EV_FORK_ENABLE 4831#if EV_FORK_ENABLE
… …
3568 if (types & EV_ASYNC) 4839 if (types & EV_ASYNC)
3569 for (i = asynccnt; i--; ) 4840 for (i = asynccnt; i--; )
3570 cb (EV_A_ EV_ASYNC, asyncs [i]); 4841 cb (EV_A_ EV_ASYNC, asyncs [i]);
3571#endif 4842#endif
3572 4843
4844#if EV_PREPARE_ENABLE
3573 if (types & EV_PREPARE) 4845 if (types & EV_PREPARE)
3574 for (i = preparecnt; i--; ) 4846 for (i = preparecnt; i--; )
3575#if EV_EMBED_ENABLE 4847# if EV_EMBED_ENABLE
3576 if (ev_cb (prepares [i]) != embed_prepare_cb) 4848 if (ev_cb (prepares [i]) != embed_prepare_cb)
3577#endif 4849# endif
3578 cb (EV_A_ EV_PREPARE, prepares [i]); 4850 cb (EV_A_ EV_PREPARE, prepares [i]);
4851#endif
3579 4852
4853#if EV_CHECK_ENABLE
3580 if (types & EV_CHECK) 4854 if (types & EV_CHECK)
3581 for (i = checkcnt; i--; ) 4855 for (i = checkcnt; i--; )
3582 cb (EV_A_ EV_CHECK, checks [i]); 4856 cb (EV_A_ EV_CHECK, checks [i]);
4857#endif
3583 4858
4859#if EV_SIGNAL_ENABLE
3584 if (types & EV_SIGNAL) 4860 if (types & EV_SIGNAL)
3585 for (i = 0; i < EV_NSIG - 1; ++i) 4861 for (i = 0; i < EV_NSIG - 1; ++i)
3586 for (wl = signals [i].head; wl; ) 4862 for (wl = signals [i].head; wl; )
3587 { 4863 {
3588 wn = wl->next; 4864 wn = wl->next;
3589 cb (EV_A_ EV_SIGNAL, wl); 4865 cb (EV_A_ EV_SIGNAL, wl);
3590 wl = wn; 4866 wl = wn;
3591 } 4867 }
4868#endif
3592 4869
4870#if EV_CHILD_ENABLE
3593 if (types & EV_CHILD) 4871 if (types & EV_CHILD)
3594 for (i = EV_PID_HASHSIZE; i--; ) 4872 for (i = (EV_PID_HASHSIZE); i--; )
3595 for (wl = childs [i]; wl; ) 4873 for (wl = childs [i]; wl; )
3596 { 4874 {
3597 wn = wl->next; 4875 wn = wl->next;
3598 cb (EV_A_ EV_CHILD, wl); 4876 cb (EV_A_ EV_CHILD, wl);
3599 wl = wn; 4877 wl = wn;
3600 } 4878 }
4879#endif
3601/* EV_STAT 0x00001000 /* stat data changed */ 4880/* EV_STAT 0x00001000 /* stat data changed */
3602/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4881/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3603} 4882}
3604#endif 4883#endif
3605 4884
3606#if EV_MULTIPLICITY 4885#if EV_MULTIPLICITY
3607 #include "ev_wrap.h" 4886 #include "ev_wrap.h"
3608#endif 4887#endif
3609 4888
3610#ifdef __cplusplus
3611}
3612#endif
3613

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