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Comparing libev/ev.c (file contents):
Revision 1.337 by root, Wed Mar 10 09:18:24 2010 UTC vs.
Revision 1.467 by root, Fri May 16 15:15:39 2014 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
114# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
116# define EV_USE_KQUEUE 1 121# ifndef EV_USE_KQUEUE
117# else 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h>
157#include <stdlib.h> 167#include <stdlib.h>
158#include <string.h> 168#include <string.h>
159#include <fcntl.h> 169#include <fcntl.h>
160#include <stddef.h> 170#include <stddef.h>
161 171
… …
171 181
172#ifdef EV_H 182#ifdef EV_H
173# include EV_H 183# include EV_H
174#else 184#else
175# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
176#endif 197#endif
177 198
178#ifndef _WIN32 199#ifndef _WIN32
179# include <sys/time.h> 200# include <sys/time.h>
180# include <sys/wait.h> 201# include <sys/wait.h>
181# include <unistd.h> 202# include <unistd.h>
182#else 203#else
183# include <io.h> 204# include <io.h>
184# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
185# include <windows.h> 207# include <windows.h>
186# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
187# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
188# endif 210# endif
189# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
190#endif 212#endif
191 213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
221
192/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
193 223
194/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
195#if defined (EV_NSIG) 225#if defined EV_NSIG
196/* use what's provided */ 226/* use what's provided */
197#elif defined (NSIG) 227#elif defined NSIG
198# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
199#elif defined(_NSIG) 229#elif defined _NSIG
200# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
201#elif defined (SIGMAX) 231#elif defined SIGMAX
202# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
203#elif defined (SIG_MAX) 233#elif defined SIG_MAX
204# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
205#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
206# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
207#elif defined (MAXSIG) 237#elif defined MAXSIG
208# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
209#elif defined (MAX_SIG) 239#elif defined MAX_SIG
210# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
211#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
212# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
213#elif defined (_sys_nsig) 243#elif defined _sys_nsig
214# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
215#else 245#else
216# error "unable to find value for NSIG, please report" 246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
217/* to make it compile regardless, just remove the above line, */ 247#endif
218/* but consider reporting it, too! :) */ 248
219# define EV_NSIG 65 249#ifndef EV_USE_FLOOR
250# define EV_USE_FLOOR 0
220#endif 251#endif
221 252
222#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
223# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
224# define EV_USE_CLOCK_SYSCALL 1 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
225# else 256# else
226# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
227# endif 258# endif
228#endif 259#endif
229 260
230#ifndef EV_USE_MONOTONIC 261#ifndef EV_USE_MONOTONIC
231# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 262# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
232# define EV_USE_MONOTONIC 1 263# define EV_USE_MONOTONIC EV_FEATURE_OS
233# else 264# else
234# define EV_USE_MONOTONIC 0 265# define EV_USE_MONOTONIC 0
235# endif 266# endif
236#endif 267#endif
237 268
… …
239# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 270# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
240#endif 271#endif
241 272
242#ifndef EV_USE_NANOSLEEP 273#ifndef EV_USE_NANOSLEEP
243# if _POSIX_C_SOURCE >= 199309L 274# if _POSIX_C_SOURCE >= 199309L
244# define EV_USE_NANOSLEEP 1 275# define EV_USE_NANOSLEEP EV_FEATURE_OS
245# else 276# else
246# define EV_USE_NANOSLEEP 0 277# define EV_USE_NANOSLEEP 0
247# endif 278# endif
248#endif 279#endif
249 280
250#ifndef EV_USE_SELECT 281#ifndef EV_USE_SELECT
251# define EV_USE_SELECT 1 282# define EV_USE_SELECT EV_FEATURE_BACKENDS
252#endif 283#endif
253 284
254#ifndef EV_USE_POLL 285#ifndef EV_USE_POLL
255# ifdef _WIN32 286# ifdef _WIN32
256# define EV_USE_POLL 0 287# define EV_USE_POLL 0
257# else 288# else
258# define EV_USE_POLL 1 289# define EV_USE_POLL EV_FEATURE_BACKENDS
259# endif 290# endif
260#endif 291#endif
261 292
262#ifndef EV_USE_EPOLL 293#ifndef EV_USE_EPOLL
263# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
264# define EV_USE_EPOLL 1 295# define EV_USE_EPOLL EV_FEATURE_BACKENDS
265# else 296# else
266# define EV_USE_EPOLL 0 297# define EV_USE_EPOLL 0
267# endif 298# endif
268#endif 299#endif
269 300
… …
275# define EV_USE_PORT 0 306# define EV_USE_PORT 0
276#endif 307#endif
277 308
278#ifndef EV_USE_INOTIFY 309#ifndef EV_USE_INOTIFY
279# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
280# define EV_USE_INOTIFY 1 311# define EV_USE_INOTIFY EV_FEATURE_OS
281# else 312# else
282# define EV_USE_INOTIFY 0 313# define EV_USE_INOTIFY 0
283# endif 314# endif
284#endif 315#endif
285 316
286#ifndef EV_PID_HASHSIZE 317#ifndef EV_PID_HASHSIZE
287# if EV_MINIMAL 318# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
288# define EV_PID_HASHSIZE 1
289# else
290# define EV_PID_HASHSIZE 16
291# endif
292#endif 319#endif
293 320
294#ifndef EV_INOTIFY_HASHSIZE 321#ifndef EV_INOTIFY_HASHSIZE
295# if EV_MINIMAL 322# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
296# define EV_INOTIFY_HASHSIZE 1
297# else
298# define EV_INOTIFY_HASHSIZE 16
299# endif
300#endif 323#endif
301 324
302#ifndef EV_USE_EVENTFD 325#ifndef EV_USE_EVENTFD
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 326# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
304# define EV_USE_EVENTFD 1 327# define EV_USE_EVENTFD EV_FEATURE_OS
305# else 328# else
306# define EV_USE_EVENTFD 0 329# define EV_USE_EVENTFD 0
307# endif 330# endif
308#endif 331#endif
309 332
310#ifndef EV_USE_SIGNALFD 333#ifndef EV_USE_SIGNALFD
311# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 334# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
312# define EV_USE_SIGNALFD 1 335# define EV_USE_SIGNALFD EV_FEATURE_OS
313# else 336# else
314# define EV_USE_SIGNALFD 0 337# define EV_USE_SIGNALFD 0
315# endif 338# endif
316#endif 339#endif
317 340
… …
320# define EV_USE_4HEAP 1 343# define EV_USE_4HEAP 1
321# define EV_HEAP_CACHE_AT 1 344# define EV_HEAP_CACHE_AT 1
322#endif 345#endif
323 346
324#ifndef EV_VERIFY 347#ifndef EV_VERIFY
325# define EV_VERIFY !EV_MINIMAL 348# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
326#endif 349#endif
327 350
328#ifndef EV_USE_4HEAP 351#ifndef EV_USE_4HEAP
329# define EV_USE_4HEAP !EV_MINIMAL 352# define EV_USE_4HEAP EV_FEATURE_DATA
330#endif 353#endif
331 354
332#ifndef EV_HEAP_CACHE_AT 355#ifndef EV_HEAP_CACHE_AT
333# 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
334#endif 373#endif
335 374
336/* 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, */
337/* which makes programs even slower. might work on other unices, too. */ 376/* which makes programs even slower. might work on other unices, too. */
338#if EV_USE_CLOCK_SYSCALL 377#if EV_USE_CLOCK_SYSCALL
339# include <syscall.h> 378# include <sys/syscall.h>
340# ifdef SYS_clock_gettime 379# ifdef SYS_clock_gettime
341# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 380# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
342# undef EV_USE_MONOTONIC 381# undef EV_USE_MONOTONIC
343# define EV_USE_MONOTONIC 1 382# define EV_USE_MONOTONIC 1
344# else 383# else
… …
347# endif 386# endif
348#endif 387#endif
349 388
350/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 389/* this block fixes any misconfiguration where we know we run into trouble otherwise */
351 390
352#ifdef _AIX
353/* AIX has a completely broken poll.h header */
354# undef EV_USE_POLL
355# define EV_USE_POLL 0
356#endif
357
358#ifndef CLOCK_MONOTONIC 391#ifndef CLOCK_MONOTONIC
359# undef EV_USE_MONOTONIC 392# undef EV_USE_MONOTONIC
360# define EV_USE_MONOTONIC 0 393# define EV_USE_MONOTONIC 0
361#endif 394#endif
362 395
… …
369# undef EV_USE_INOTIFY 402# undef EV_USE_INOTIFY
370# define EV_USE_INOTIFY 0 403# define EV_USE_INOTIFY 0
371#endif 404#endif
372 405
373#if !EV_USE_NANOSLEEP 406#if !EV_USE_NANOSLEEP
374# ifndef _WIN32 407/* hp-ux has it in sys/time.h, which we unconditionally include above */
408# if !defined _WIN32 && !defined __hpux
375# include <sys/select.h> 409# include <sys/select.h>
376# endif 410# endif
377#endif 411#endif
378 412
379#if EV_USE_INOTIFY 413#if EV_USE_INOTIFY
380# include <sys/utsname.h>
381# include <sys/statfs.h> 414# include <sys/statfs.h>
382# include <sys/inotify.h> 415# include <sys/inotify.h>
383/* 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 */
384# ifndef IN_DONT_FOLLOW 417# ifndef IN_DONT_FOLLOW
385# undef EV_USE_INOTIFY 418# undef EV_USE_INOTIFY
386# define EV_USE_INOTIFY 0 419# define EV_USE_INOTIFY 0
387# endif 420# endif
388#endif
389
390#if EV_SELECT_IS_WINSOCKET
391# include <winsock.h>
392#endif 421#endif
393 422
394#if EV_USE_EVENTFD 423#if EV_USE_EVENTFD
395/* 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 */
396# include <stdint.h> 425# include <stdint.h>
… …
402# define EFD_CLOEXEC O_CLOEXEC 431# define EFD_CLOEXEC O_CLOEXEC
403# else 432# else
404# define EFD_CLOEXEC 02000000 433# define EFD_CLOEXEC 02000000
405# endif 434# endif
406# endif 435# endif
407# ifdef __cplusplus
408extern "C" {
409# endif
410int (eventfd) (unsigned int initval, int flags); 436EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
411# ifdef __cplusplus
412}
413# endif
414#endif 437#endif
415 438
416#if EV_USE_SIGNALFD 439#if EV_USE_SIGNALFD
417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 440/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
418# include <stdint.h> 441# include <stdint.h>
… …
424# define SFD_CLOEXEC O_CLOEXEC 447# define SFD_CLOEXEC O_CLOEXEC
425# else 448# else
426# define SFD_CLOEXEC 02000000 449# define SFD_CLOEXEC 02000000
427# endif 450# endif
428# endif 451# endif
429# ifdef __cplusplus
430extern "C" {
431# endif
432int signalfd (int fd, const sigset_t *mask, int flags); 452EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
433 453
434struct signalfd_siginfo 454struct signalfd_siginfo
435{ 455{
436 uint32_t ssi_signo; 456 uint32_t ssi_signo;
437 char pad[128 - sizeof (uint32_t)]; 457 char pad[128 - sizeof (uint32_t)];
438}; 458};
439# ifdef __cplusplus
440}
441# endif 459#endif
442#endif
443
444 460
445/**/ 461/**/
446 462
447#if EV_VERIFY >= 3 463#if EV_VERIFY >= 3
448# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 464# define EV_FREQUENT_CHECK ev_verify (EV_A)
449#else 465#else
450# define EV_FREQUENT_CHECK do { } while (0) 466# define EV_FREQUENT_CHECK do { } while (0)
451#endif 467#endif
452 468
453/* 469/*
454 * This is used to avoid floating point rounding problems. 470 * This is used to work around floating point rounding problems.
455 * It is added to ev_rt_now when scheduling periodics
456 * to ensure progress, time-wise, even when rounding
457 * errors are against us.
458 * This value is good at least till the year 4000. 471 * This value is good at least till the year 4000.
459 * Better solutions welcome.
460 */ 472 */
461#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 */
462 475
463#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) */
464#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) */
465 478
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;
466#if __GNUC__ >= 4 537 #if __GNUC__
467# define expect(expr,value) __builtin_expect ((expr),(value)) 538 typedef signed long long int64_t;
468# 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
469#else 553#else
470# define expect(expr,value) (expr) 554 #include <inttypes.h>
471# define noinline 555 #if UINTMAX_MAX > 0xffffffffU
472# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 556 #define ECB_PTRSIZE 8
473# define inline 557 #else
558 #define ECB_PTRSIZE 4
559 #endif
474# 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
475#endif 568 #endif
569#endif
476 570
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#define ecb_noinline ecb_attribute ((__noinline__))
811#define ecb_unused ecb_attribute ((__unused__))
812#define ecb_const ecb_attribute ((__const__))
813#define ecb_pure ecb_attribute ((__pure__))
814
815#if ECB_C11
816 #define ecb_noreturn _Noreturn
817#else
818 #define ecb_noreturn ecb_attribute ((__noreturn__))
819#endif
820
821#if ECB_GCC_VERSION(4,3)
822 #define ecb_artificial ecb_attribute ((__artificial__))
823 #define ecb_hot ecb_attribute ((__hot__))
824 #define ecb_cold ecb_attribute ((__cold__))
825#else
826 #define ecb_artificial
827 #define ecb_hot
828 #define ecb_cold
829#endif
830
831/* put around conditional expressions if you are very sure that the */
832/* expression is mostly true or mostly false. note that these return */
833/* booleans, not the expression. */
477#define expect_false(expr) expect ((expr) != 0, 0) 834#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
478#define expect_true(expr) expect ((expr) != 0, 1) 835#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
836/* for compatibility to the rest of the world */
837#define ecb_likely(expr) ecb_expect_true (expr)
838#define ecb_unlikely(expr) ecb_expect_false (expr)
839
840/* count trailing zero bits and count # of one bits */
841#if ECB_GCC_VERSION(3,4)
842 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
843 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
844 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
845 #define ecb_ctz32(x) __builtin_ctz (x)
846 #define ecb_ctz64(x) __builtin_ctzll (x)
847 #define ecb_popcount32(x) __builtin_popcount (x)
848 /* no popcountll */
849#else
850 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
851 ecb_function_ int
852 ecb_ctz32 (uint32_t x)
853 {
854 int r = 0;
855
856 x &= ~x + 1; /* this isolates the lowest bit */
857
858#if ECB_branchless_on_i386
859 r += !!(x & 0xaaaaaaaa) << 0;
860 r += !!(x & 0xcccccccc) << 1;
861 r += !!(x & 0xf0f0f0f0) << 2;
862 r += !!(x & 0xff00ff00) << 3;
863 r += !!(x & 0xffff0000) << 4;
864#else
865 if (x & 0xaaaaaaaa) r += 1;
866 if (x & 0xcccccccc) r += 2;
867 if (x & 0xf0f0f0f0) r += 4;
868 if (x & 0xff00ff00) r += 8;
869 if (x & 0xffff0000) r += 16;
870#endif
871
872 return r;
873 }
874
875 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
876 ecb_function_ int
877 ecb_ctz64 (uint64_t x)
878 {
879 int shift = x & 0xffffffffU ? 0 : 32;
880 return ecb_ctz32 (x >> shift) + shift;
881 }
882
883 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
884 ecb_function_ int
885 ecb_popcount32 (uint32_t x)
886 {
887 x -= (x >> 1) & 0x55555555;
888 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
889 x = ((x >> 4) + x) & 0x0f0f0f0f;
890 x *= 0x01010101;
891
892 return x >> 24;
893 }
894
895 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
896 ecb_function_ int ecb_ld32 (uint32_t x)
897 {
898 int r = 0;
899
900 if (x >> 16) { x >>= 16; r += 16; }
901 if (x >> 8) { x >>= 8; r += 8; }
902 if (x >> 4) { x >>= 4; r += 4; }
903 if (x >> 2) { x >>= 2; r += 2; }
904 if (x >> 1) { r += 1; }
905
906 return r;
907 }
908
909 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
910 ecb_function_ int ecb_ld64 (uint64_t x)
911 {
912 int r = 0;
913
914 if (x >> 32) { x >>= 32; r += 32; }
915
916 return r + ecb_ld32 (x);
917 }
918#endif
919
920ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
921ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
922ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
923ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
924
925ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
926ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
927{
928 return ( (x * 0x0802U & 0x22110U)
929 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
930}
931
932ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
933ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
934{
935 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
936 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
937 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
938 x = ( x >> 8 ) | ( x << 8);
939
940 return x;
941}
942
943ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
944ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
945{
946 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
947 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
948 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
949 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
950 x = ( x >> 16 ) | ( x << 16);
951
952 return x;
953}
954
955/* popcount64 is only available on 64 bit cpus as gcc builtin */
956/* so for this version we are lazy */
957ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
958ecb_function_ int
959ecb_popcount64 (uint64_t x)
960{
961 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
962}
963
964ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
965ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
966ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
967ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
968ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
969ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
970ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
971ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
972
973ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
974ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
975ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
976ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
977ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
978ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
979ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
980ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
981
982#if ECB_GCC_VERSION(4,3)
983 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
984 #define ecb_bswap32(x) __builtin_bswap32 (x)
985 #define ecb_bswap64(x) __builtin_bswap64 (x)
986#else
987 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
988 ecb_function_ uint16_t
989 ecb_bswap16 (uint16_t x)
990 {
991 return ecb_rotl16 (x, 8);
992 }
993
994 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
995 ecb_function_ uint32_t
996 ecb_bswap32 (uint32_t x)
997 {
998 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
999 }
1000
1001 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
1002 ecb_function_ uint64_t
1003 ecb_bswap64 (uint64_t x)
1004 {
1005 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1006 }
1007#endif
1008
1009#if ECB_GCC_VERSION(4,5)
1010 #define ecb_unreachable() __builtin_unreachable ()
1011#else
1012 /* this seems to work fine, but gcc always emits a warning for it :/ */
1013 ecb_inline void ecb_unreachable (void) ecb_noreturn;
1014 ecb_inline void ecb_unreachable (void) { }
1015#endif
1016
1017/* try to tell the compiler that some condition is definitely true */
1018#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1019
1020ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
1021ecb_inline unsigned char
1022ecb_byteorder_helper (void)
1023{
1024 /* the union code still generates code under pressure in gcc, */
1025 /* but less than using pointers, and always seems to */
1026 /* successfully return a constant. */
1027 /* the reason why we have this horrible preprocessor mess */
1028 /* is to avoid it in all cases, at least on common architectures */
1029 /* or when using a recent enough gcc version (>= 4.6) */
1030#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1031 return 0x44;
1032#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1033 return 0x44;
1034#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1035 return 0x11;
1036#else
1037 union
1038 {
1039 uint32_t i;
1040 uint8_t c;
1041 } u = { 0x11223344 };
1042 return u.c;
1043#endif
1044}
1045
1046ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1047ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1048ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1049ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1050
1051#if ECB_GCC_VERSION(3,0) || ECB_C99
1052 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1053#else
1054 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1055#endif
1056
1057#if __cplusplus
1058 template<typename T>
1059 static inline T ecb_div_rd (T val, T div)
1060 {
1061 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1062 }
1063 template<typename T>
1064 static inline T ecb_div_ru (T val, T div)
1065 {
1066 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1067 }
1068#else
1069 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1070 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1071#endif
1072
1073#if ecb_cplusplus_does_not_suck
1074 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1075 template<typename T, int N>
1076 static inline int ecb_array_length (const T (&arr)[N])
1077 {
1078 return N;
1079 }
1080#else
1081 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1082#endif
1083
1084/*******************************************************************************/
1085/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1086
1087/* basically, everything uses "ieee pure-endian" floating point numbers */
1088/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1089#if 0 \
1090 || __i386 || __i386__ \
1091 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1092 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1093 || defined __s390__ || defined __s390x__ \
1094 || defined __mips__ \
1095 || defined __alpha__ \
1096 || defined __hppa__ \
1097 || defined __ia64__ \
1098 || defined __m68k__ \
1099 || defined __m88k__ \
1100 || defined __sh__ \
1101 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \
1102 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1103 || defined __aarch64__
1104 #define ECB_STDFP 1
1105 #include <string.h> /* for memcpy */
1106#else
1107 #define ECB_STDFP 0
1108#endif
1109
1110#ifndef ECB_NO_LIBM
1111
1112 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1113
1114 /* only the oldest of old doesn't have this one. solaris. */
1115 #ifdef INFINITY
1116 #define ECB_INFINITY INFINITY
1117 #else
1118 #define ECB_INFINITY HUGE_VAL
1119 #endif
1120
1121 #ifdef NAN
1122 #define ECB_NAN NAN
1123 #else
1124 #define ECB_NAN ECB_INFINITY
1125 #endif
1126
1127 /* converts an ieee half/binary16 to a float */
1128 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1129 ecb_function_ float
1130 ecb_binary16_to_float (uint16_t x)
1131 {
1132 int e = (x >> 10) & 0x1f;
1133 int m = x & 0x3ff;
1134 float r;
1135
1136 if (!e ) r = ldexpf (m , -24);
1137 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1138 else if (m ) r = ECB_NAN;
1139 else r = ECB_INFINITY;
1140
1141 return x & 0x8000 ? -r : r;
1142 }
1143
1144 /* convert a float to ieee single/binary32 */
1145 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1146 ecb_function_ uint32_t
1147 ecb_float_to_binary32 (float x)
1148 {
1149 uint32_t r;
1150
1151 #if ECB_STDFP
1152 memcpy (&r, &x, 4);
1153 #else
1154 /* slow emulation, works for anything but -0 */
1155 uint32_t m;
1156 int e;
1157
1158 if (x == 0e0f ) return 0x00000000U;
1159 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1160 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1161 if (x != x ) return 0x7fbfffffU;
1162
1163 m = frexpf (x, &e) * 0x1000000U;
1164
1165 r = m & 0x80000000U;
1166
1167 if (r)
1168 m = -m;
1169
1170 if (e <= -126)
1171 {
1172 m &= 0xffffffU;
1173 m >>= (-125 - e);
1174 e = -126;
1175 }
1176
1177 r |= (e + 126) << 23;
1178 r |= m & 0x7fffffU;
1179 #endif
1180
1181 return r;
1182 }
1183
1184 /* converts an ieee single/binary32 to a float */
1185 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1186 ecb_function_ float
1187 ecb_binary32_to_float (uint32_t x)
1188 {
1189 float r;
1190
1191 #if ECB_STDFP
1192 memcpy (&r, &x, 4);
1193 #else
1194 /* emulation, only works for normals and subnormals and +0 */
1195 int neg = x >> 31;
1196 int e = (x >> 23) & 0xffU;
1197
1198 x &= 0x7fffffU;
1199
1200 if (e)
1201 x |= 0x800000U;
1202 else
1203 e = 1;
1204
1205 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1206 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1207
1208 r = neg ? -r : r;
1209 #endif
1210
1211 return r;
1212 }
1213
1214 /* convert a double to ieee double/binary64 */
1215 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1216 ecb_function_ uint64_t
1217 ecb_double_to_binary64 (double x)
1218 {
1219 uint64_t r;
1220
1221 #if ECB_STDFP
1222 memcpy (&r, &x, 8);
1223 #else
1224 /* slow emulation, works for anything but -0 */
1225 uint64_t m;
1226 int e;
1227
1228 if (x == 0e0 ) return 0x0000000000000000U;
1229 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1230 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1231 if (x != x ) return 0X7ff7ffffffffffffU;
1232
1233 m = frexp (x, &e) * 0x20000000000000U;
1234
1235 r = m & 0x8000000000000000;;
1236
1237 if (r)
1238 m = -m;
1239
1240 if (e <= -1022)
1241 {
1242 m &= 0x1fffffffffffffU;
1243 m >>= (-1021 - e);
1244 e = -1022;
1245 }
1246
1247 r |= ((uint64_t)(e + 1022)) << 52;
1248 r |= m & 0xfffffffffffffU;
1249 #endif
1250
1251 return r;
1252 }
1253
1254 /* converts an ieee double/binary64 to a double */
1255 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1256 ecb_function_ double
1257 ecb_binary64_to_double (uint64_t x)
1258 {
1259 double r;
1260
1261 #if ECB_STDFP
1262 memcpy (&r, &x, 8);
1263 #else
1264 /* emulation, only works for normals and subnormals and +0 */
1265 int neg = x >> 63;
1266 int e = (x >> 52) & 0x7ffU;
1267
1268 x &= 0xfffffffffffffU;
1269
1270 if (e)
1271 x |= 0x10000000000000U;
1272 else
1273 e = 1;
1274
1275 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1276 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1277
1278 r = neg ? -r : r;
1279 #endif
1280
1281 return r;
1282 }
1283
1284#endif
1285
1286#endif
1287
1288/* ECB.H END */
1289
1290#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1291/* if your architecture doesn't need memory fences, e.g. because it is
1292 * single-cpu/core, or if you use libev in a project that doesn't use libev
1293 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1294 * libev, in which cases the memory fences become nops.
1295 * alternatively, you can remove this #error and link against libpthread,
1296 * which will then provide the memory fences.
1297 */
1298# error "memory fences not defined for your architecture, please report"
1299#endif
1300
1301#ifndef ECB_MEMORY_FENCE
1302# define ECB_MEMORY_FENCE do { } while (0)
1303# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1304# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1305#endif
1306
1307#define expect_false(cond) ecb_expect_false (cond)
1308#define expect_true(cond) ecb_expect_true (cond)
1309#define noinline ecb_noinline
1310
479#define inline_size static inline 1311#define inline_size ecb_inline
480 1312
481#if EV_MINIMAL 1313#if EV_FEATURE_CODE
1314# define inline_speed ecb_inline
1315#else
482# define inline_speed static noinline 1316# define inline_speed static noinline
483#else
484# define inline_speed static inline
485#endif 1317#endif
486 1318
487#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1319#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
488 1320
489#if EV_MINPRI == EV_MAXPRI 1321#if EV_MINPRI == EV_MAXPRI
… …
502#define ev_active(w) ((W)(w))->active 1334#define ev_active(w) ((W)(w))->active
503#define ev_at(w) ((WT)(w))->at 1335#define ev_at(w) ((WT)(w))->at
504 1336
505#if EV_USE_REALTIME 1337#if EV_USE_REALTIME
506/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1338/* sig_atomic_t is used to avoid per-thread variables or locking but still */
507/* giving it a reasonably high chance of working on typical architetcures */ 1339/* giving it a reasonably high chance of working on typical architectures */
508static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1340static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
509#endif 1341#endif
510 1342
511#if EV_USE_MONOTONIC 1343#if EV_USE_MONOTONIC
512static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1344static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
526# include "ev_win32.c" 1358# include "ev_win32.c"
527#endif 1359#endif
528 1360
529/*****************************************************************************/ 1361/*****************************************************************************/
530 1362
1363/* define a suitable floor function (only used by periodics atm) */
1364
1365#if EV_USE_FLOOR
1366# include <math.h>
1367# define ev_floor(v) floor (v)
1368#else
1369
1370#include <float.h>
1371
1372/* a floor() replacement function, should be independent of ev_tstamp type */
1373static ev_tstamp noinline
1374ev_floor (ev_tstamp v)
1375{
1376 /* the choice of shift factor is not terribly important */
1377#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1378 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1379#else
1380 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1381#endif
1382
1383 /* argument too large for an unsigned long? */
1384 if (expect_false (v >= shift))
1385 {
1386 ev_tstamp f;
1387
1388 if (v == v - 1.)
1389 return v; /* very large number */
1390
1391 f = shift * ev_floor (v * (1. / shift));
1392 return f + ev_floor (v - f);
1393 }
1394
1395 /* special treatment for negative args? */
1396 if (expect_false (v < 0.))
1397 {
1398 ev_tstamp f = -ev_floor (-v);
1399
1400 return f - (f == v ? 0 : 1);
1401 }
1402
1403 /* fits into an unsigned long */
1404 return (unsigned long)v;
1405}
1406
1407#endif
1408
1409/*****************************************************************************/
1410
1411#ifdef __linux
1412# include <sys/utsname.h>
1413#endif
1414
1415static unsigned int noinline ecb_cold
1416ev_linux_version (void)
1417{
1418#ifdef __linux
1419 unsigned int v = 0;
1420 struct utsname buf;
1421 int i;
1422 char *p = buf.release;
1423
1424 if (uname (&buf))
1425 return 0;
1426
1427 for (i = 3+1; --i; )
1428 {
1429 unsigned int c = 0;
1430
1431 for (;;)
1432 {
1433 if (*p >= '0' && *p <= '9')
1434 c = c * 10 + *p++ - '0';
1435 else
1436 {
1437 p += *p == '.';
1438 break;
1439 }
1440 }
1441
1442 v = (v << 8) | c;
1443 }
1444
1445 return v;
1446#else
1447 return 0;
1448#endif
1449}
1450
1451/*****************************************************************************/
1452
531#if EV_AVOID_STDIO 1453#if EV_AVOID_STDIO
532static void noinline 1454static void noinline ecb_cold
533ev_printerr (const char *msg) 1455ev_printerr (const char *msg)
534{ 1456{
535 write (STDERR_FILENO, msg, strlen (msg)); 1457 write (STDERR_FILENO, msg, strlen (msg));
536} 1458}
537#endif 1459#endif
538 1460
539static void (*syserr_cb)(const char *msg); 1461static void (*syserr_cb)(const char *msg) EV_THROW;
540 1462
541void 1463void ecb_cold
542ev_set_syserr_cb (void (*cb)(const char *msg)) 1464ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
543{ 1465{
544 syserr_cb = cb; 1466 syserr_cb = cb;
545} 1467}
546 1468
547static void noinline 1469static void noinline ecb_cold
548ev_syserr (const char *msg) 1470ev_syserr (const char *msg)
549{ 1471{
550 if (!msg) 1472 if (!msg)
551 msg = "(libev) system error"; 1473 msg = "(libev) system error";
552 1474
553 if (syserr_cb) 1475 if (syserr_cb)
554 syserr_cb (msg); 1476 syserr_cb (msg);
555 else 1477 else
556 { 1478 {
557#if EV_AVOID_STDIO 1479#if EV_AVOID_STDIO
558 const char *err = strerror (errno);
559
560 ev_printerr (msg); 1480 ev_printerr (msg);
561 ev_printerr (": "); 1481 ev_printerr (": ");
562 ev_printerr (err); 1482 ev_printerr (strerror (errno));
563 ev_printerr ("\n"); 1483 ev_printerr ("\n");
564#else 1484#else
565 perror (msg); 1485 perror (msg);
566#endif 1486#endif
567 abort (); 1487 abort ();
568 } 1488 }
569} 1489}
570 1490
571static void * 1491static void *
572ev_realloc_emul (void *ptr, long size) 1492ev_realloc_emul (void *ptr, long size) EV_THROW
573{ 1493{
574#if __GLIBC__
575 return realloc (ptr, size);
576#else
577 /* some systems, notably openbsd and darwin, fail to properly 1494 /* some systems, notably openbsd and darwin, fail to properly
578 * implement realloc (x, 0) (as required by both ansi c-89 and 1495 * implement realloc (x, 0) (as required by both ansi c-89 and
579 * the single unix specification, so work around them here. 1496 * the single unix specification, so work around them here.
1497 * recently, also (at least) fedora and debian started breaking it,
1498 * despite documenting it otherwise.
580 */ 1499 */
581 1500
582 if (size) 1501 if (size)
583 return realloc (ptr, size); 1502 return realloc (ptr, size);
584 1503
585 free (ptr); 1504 free (ptr);
586 return 0; 1505 return 0;
587#endif
588} 1506}
589 1507
590static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1508static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
591 1509
592void 1510void ecb_cold
593ev_set_allocator (void *(*cb)(void *ptr, long size)) 1511ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
594{ 1512{
595 alloc = cb; 1513 alloc = cb;
596} 1514}
597 1515
598inline_speed void * 1516inline_speed void *
… …
601 ptr = alloc (ptr, size); 1519 ptr = alloc (ptr, size);
602 1520
603 if (!ptr && size) 1521 if (!ptr && size)
604 { 1522 {
605#if EV_AVOID_STDIO 1523#if EV_AVOID_STDIO
606 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1524 ev_printerr ("(libev) memory allocation failed, aborting.\n");
607#else 1525#else
608 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1526 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
609#endif 1527#endif
610 abort (); 1528 abort ();
611 } 1529 }
612 1530
613 return ptr; 1531 return ptr;
… …
630 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1548 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
631 unsigned char unused; 1549 unsigned char unused;
632#if EV_USE_EPOLL 1550#if EV_USE_EPOLL
633 unsigned int egen; /* generation counter to counter epoll bugs */ 1551 unsigned int egen; /* generation counter to counter epoll bugs */
634#endif 1552#endif
635#if EV_SELECT_IS_WINSOCKET 1553#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
636 SOCKET handle; 1554 SOCKET handle;
1555#endif
1556#if EV_USE_IOCP
1557 OVERLAPPED or, ow;
637#endif 1558#endif
638} ANFD; 1559} ANFD;
639 1560
640/* stores the pending event set for a given watcher */ 1561/* stores the pending event set for a given watcher */
641typedef struct 1562typedef struct
… …
683 #undef VAR 1604 #undef VAR
684 }; 1605 };
685 #include "ev_wrap.h" 1606 #include "ev_wrap.h"
686 1607
687 static struct ev_loop default_loop_struct; 1608 static struct ev_loop default_loop_struct;
688 struct ev_loop *ev_default_loop_ptr; 1609 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
689 1610
690#else 1611#else
691 1612
692 ev_tstamp ev_rt_now; 1613 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
693 #define VAR(name,decl) static decl; 1614 #define VAR(name,decl) static decl;
694 #include "ev_vars.h" 1615 #include "ev_vars.h"
695 #undef VAR 1616 #undef VAR
696 1617
697 static int ev_default_loop_ptr; 1618 static int ev_default_loop_ptr;
698 1619
699#endif 1620#endif
700 1621
701#if EV_MINIMAL < 2 1622#if EV_FEATURE_API
702# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1623# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
703# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1624# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
704# define EV_INVOKE_PENDING invoke_cb (EV_A) 1625# define EV_INVOKE_PENDING invoke_cb (EV_A)
705#else 1626#else
706# define EV_RELEASE_CB (void)0 1627# define EV_RELEASE_CB (void)0
707# define EV_ACQUIRE_CB (void)0 1628# define EV_ACQUIRE_CB (void)0
708# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1629# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
709#endif 1630#endif
710 1631
711#define EVUNLOOP_RECURSE 0x80 1632#define EVBREAK_RECURSE 0x80
712 1633
713/*****************************************************************************/ 1634/*****************************************************************************/
714 1635
715#ifndef EV_HAVE_EV_TIME 1636#ifndef EV_HAVE_EV_TIME
716ev_tstamp 1637ev_tstamp
717ev_time (void) 1638ev_time (void) EV_THROW
718{ 1639{
719#if EV_USE_REALTIME 1640#if EV_USE_REALTIME
720 if (expect_true (have_realtime)) 1641 if (expect_true (have_realtime))
721 { 1642 {
722 struct timespec ts; 1643 struct timespec ts;
… …
746 return ev_time (); 1667 return ev_time ();
747} 1668}
748 1669
749#if EV_MULTIPLICITY 1670#if EV_MULTIPLICITY
750ev_tstamp 1671ev_tstamp
751ev_now (EV_P) 1672ev_now (EV_P) EV_THROW
752{ 1673{
753 return ev_rt_now; 1674 return ev_rt_now;
754} 1675}
755#endif 1676#endif
756 1677
757void 1678void
758ev_sleep (ev_tstamp delay) 1679ev_sleep (ev_tstamp delay) EV_THROW
759{ 1680{
760 if (delay > 0.) 1681 if (delay > 0.)
761 { 1682 {
762#if EV_USE_NANOSLEEP 1683#if EV_USE_NANOSLEEP
763 struct timespec ts; 1684 struct timespec ts;
764 1685
765 ts.tv_sec = (time_t)delay; 1686 EV_TS_SET (ts, delay);
766 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
767
768 nanosleep (&ts, 0); 1687 nanosleep (&ts, 0);
769#elif defined(_WIN32) 1688#elif defined _WIN32
770 Sleep ((unsigned long)(delay * 1e3)); 1689 Sleep ((unsigned long)(delay * 1e3));
771#else 1690#else
772 struct timeval tv; 1691 struct timeval tv;
773 1692
774 tv.tv_sec = (time_t)delay;
775 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
776
777 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1693 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
778 /* something not guaranteed by newer posix versions, but guaranteed */ 1694 /* something not guaranteed by newer posix versions, but guaranteed */
779 /* by older ones */ 1695 /* by older ones */
1696 EV_TV_SET (tv, delay);
780 select (0, 0, 0, 0, &tv); 1697 select (0, 0, 0, 0, &tv);
781#endif 1698#endif
782 } 1699 }
783} 1700}
784 1701
785/*****************************************************************************/ 1702/*****************************************************************************/
786 1703
787#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1704#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
788 1705
789/* find a suitable new size for the given array, */ 1706/* find a suitable new size for the given array, */
790/* hopefully by rounding to a ncie-to-malloc size */ 1707/* hopefully by rounding to a nice-to-malloc size */
791inline_size int 1708inline_size int
792array_nextsize (int elem, int cur, int cnt) 1709array_nextsize (int elem, int cur, int cnt)
793{ 1710{
794 int ncur = cur + 1; 1711 int ncur = cur + 1;
795 1712
796 do 1713 do
797 ncur <<= 1; 1714 ncur <<= 1;
798 while (cnt > ncur); 1715 while (cnt > ncur);
799 1716
800 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1717 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
801 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1718 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
802 { 1719 {
803 ncur *= elem; 1720 ncur *= elem;
804 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1721 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
805 ncur = ncur - sizeof (void *) * 4; 1722 ncur = ncur - sizeof (void *) * 4;
… …
807 } 1724 }
808 1725
809 return ncur; 1726 return ncur;
810} 1727}
811 1728
812static noinline void * 1729static void * noinline ecb_cold
813array_realloc (int elem, void *base, int *cur, int cnt) 1730array_realloc (int elem, void *base, int *cur, int cnt)
814{ 1731{
815 *cur = array_nextsize (elem, *cur, cnt); 1732 *cur = array_nextsize (elem, *cur, cnt);
816 return ev_realloc (base, elem * *cur); 1733 return ev_realloc (base, elem * *cur);
817} 1734}
… …
820 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1737 memset ((void *)(base), 0, sizeof (*(base)) * (count))
821 1738
822#define array_needsize(type,base,cur,cnt,init) \ 1739#define array_needsize(type,base,cur,cnt,init) \
823 if (expect_false ((cnt) > (cur))) \ 1740 if (expect_false ((cnt) > (cur))) \
824 { \ 1741 { \
825 int ocur_ = (cur); \ 1742 int ecb_unused ocur_ = (cur); \
826 (base) = (type *)array_realloc \ 1743 (base) = (type *)array_realloc \
827 (sizeof (type), (base), &(cur), (cnt)); \ 1744 (sizeof (type), (base), &(cur), (cnt)); \
828 init ((base) + (ocur_), (cur) - ocur_); \ 1745 init ((base) + (ocur_), (cur) - ocur_); \
829 } 1746 }
830 1747
… …
848pendingcb (EV_P_ ev_prepare *w, int revents) 1765pendingcb (EV_P_ ev_prepare *w, int revents)
849{ 1766{
850} 1767}
851 1768
852void noinline 1769void noinline
853ev_feed_event (EV_P_ void *w, int revents) 1770ev_feed_event (EV_P_ void *w, int revents) EV_THROW
854{ 1771{
855 W w_ = (W)w; 1772 W w_ = (W)w;
856 int pri = ABSPRI (w_); 1773 int pri = ABSPRI (w_);
857 1774
858 if (expect_false (w_->pending)) 1775 if (expect_false (w_->pending))
… …
862 w_->pending = ++pendingcnt [pri]; 1779 w_->pending = ++pendingcnt [pri];
863 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1780 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
864 pendings [pri][w_->pending - 1].w = w_; 1781 pendings [pri][w_->pending - 1].w = w_;
865 pendings [pri][w_->pending - 1].events = revents; 1782 pendings [pri][w_->pending - 1].events = revents;
866 } 1783 }
1784
1785 pendingpri = NUMPRI - 1;
867} 1786}
868 1787
869inline_speed void 1788inline_speed void
870feed_reverse (EV_P_ W w) 1789feed_reverse (EV_P_ W w)
871{ 1790{
… …
917 if (expect_true (!anfd->reify)) 1836 if (expect_true (!anfd->reify))
918 fd_event_nocheck (EV_A_ fd, revents); 1837 fd_event_nocheck (EV_A_ fd, revents);
919} 1838}
920 1839
921void 1840void
922ev_feed_fd_event (EV_P_ int fd, int revents) 1841ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
923{ 1842{
924 if (fd >= 0 && fd < anfdmax) 1843 if (fd >= 0 && fd < anfdmax)
925 fd_event_nocheck (EV_A_ fd, revents); 1844 fd_event_nocheck (EV_A_ fd, revents);
926} 1845}
927 1846
… …
930inline_size void 1849inline_size void
931fd_reify (EV_P) 1850fd_reify (EV_P)
932{ 1851{
933 int i; 1852 int i;
934 1853
1854#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1855 for (i = 0; i < fdchangecnt; ++i)
1856 {
1857 int fd = fdchanges [i];
1858 ANFD *anfd = anfds + fd;
1859
1860 if (anfd->reify & EV__IOFDSET && anfd->head)
1861 {
1862 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1863
1864 if (handle != anfd->handle)
1865 {
1866 unsigned long arg;
1867
1868 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1869
1870 /* handle changed, but fd didn't - we need to do it in two steps */
1871 backend_modify (EV_A_ fd, anfd->events, 0);
1872 anfd->events = 0;
1873 anfd->handle = handle;
1874 }
1875 }
1876 }
1877#endif
1878
935 for (i = 0; i < fdchangecnt; ++i) 1879 for (i = 0; i < fdchangecnt; ++i)
936 { 1880 {
937 int fd = fdchanges [i]; 1881 int fd = fdchanges [i];
938 ANFD *anfd = anfds + fd; 1882 ANFD *anfd = anfds + fd;
939 ev_io *w; 1883 ev_io *w;
940 1884
941 unsigned char events = 0; 1885 unsigned char o_events = anfd->events;
1886 unsigned char o_reify = anfd->reify;
942 1887
943 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1888 anfd->reify = 0;
944 events |= (unsigned char)w->events;
945 1889
946#if EV_SELECT_IS_WINSOCKET 1890 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
947 if (events)
948 { 1891 {
949 unsigned long arg; 1892 anfd->events = 0;
950 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1893
951 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1894 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1895 anfd->events |= (unsigned char)w->events;
1896
1897 if (o_events != anfd->events)
1898 o_reify = EV__IOFDSET; /* actually |= */
952 } 1899 }
953#endif
954 1900
955 { 1901 if (o_reify & EV__IOFDSET)
956 unsigned char o_events = anfd->events;
957 unsigned char o_reify = anfd->reify;
958
959 anfd->reify = 0;
960 anfd->events = events;
961
962 if (o_events != events || o_reify & EV__IOFDSET)
963 backend_modify (EV_A_ fd, o_events, events); 1902 backend_modify (EV_A_ fd, o_events, anfd->events);
964 }
965 } 1903 }
966 1904
967 fdchangecnt = 0; 1905 fdchangecnt = 0;
968} 1906}
969 1907
… …
981 fdchanges [fdchangecnt - 1] = fd; 1919 fdchanges [fdchangecnt - 1] = fd;
982 } 1920 }
983} 1921}
984 1922
985/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1923/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
986inline_speed void 1924inline_speed void ecb_cold
987fd_kill (EV_P_ int fd) 1925fd_kill (EV_P_ int fd)
988{ 1926{
989 ev_io *w; 1927 ev_io *w;
990 1928
991 while ((w = (ev_io *)anfds [fd].head)) 1929 while ((w = (ev_io *)anfds [fd].head))
… …
994 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1932 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
995 } 1933 }
996} 1934}
997 1935
998/* check whether the given fd is actually valid, for error recovery */ 1936/* check whether the given fd is actually valid, for error recovery */
999inline_size int 1937inline_size int ecb_cold
1000fd_valid (int fd) 1938fd_valid (int fd)
1001{ 1939{
1002#ifdef _WIN32 1940#ifdef _WIN32
1003 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1941 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1004#else 1942#else
1005 return fcntl (fd, F_GETFD) != -1; 1943 return fcntl (fd, F_GETFD) != -1;
1006#endif 1944#endif
1007} 1945}
1008 1946
1009/* called on EBADF to verify fds */ 1947/* called on EBADF to verify fds */
1010static void noinline 1948static void noinline ecb_cold
1011fd_ebadf (EV_P) 1949fd_ebadf (EV_P)
1012{ 1950{
1013 int fd; 1951 int fd;
1014 1952
1015 for (fd = 0; fd < anfdmax; ++fd) 1953 for (fd = 0; fd < anfdmax; ++fd)
… …
1017 if (!fd_valid (fd) && errno == EBADF) 1955 if (!fd_valid (fd) && errno == EBADF)
1018 fd_kill (EV_A_ fd); 1956 fd_kill (EV_A_ fd);
1019} 1957}
1020 1958
1021/* called on ENOMEM in select/poll to kill some fds and retry */ 1959/* called on ENOMEM in select/poll to kill some fds and retry */
1022static void noinline 1960static void noinline ecb_cold
1023fd_enomem (EV_P) 1961fd_enomem (EV_P)
1024{ 1962{
1025 int fd; 1963 int fd;
1026 1964
1027 for (fd = anfdmax; fd--; ) 1965 for (fd = anfdmax; fd--; )
… …
1062} 2000}
1063 2001
1064/*****************************************************************************/ 2002/*****************************************************************************/
1065 2003
1066/* 2004/*
1067 * the heap functions want a real array index. array index 0 uis guaranteed to not 2005 * the heap functions want a real array index. array index 0 is guaranteed to not
1068 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 2006 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1069 * the branching factor of the d-tree. 2007 * the branching factor of the d-tree.
1070 */ 2008 */
1071 2009
1072/* 2010/*
… …
1222 2160
1223/*****************************************************************************/ 2161/*****************************************************************************/
1224 2162
1225#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2163#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1226 2164
1227static void noinline 2165static void noinline ecb_cold
1228evpipe_init (EV_P) 2166evpipe_init (EV_P)
1229{ 2167{
1230 if (!ev_is_active (&pipe_w)) 2168 if (!ev_is_active (&pipe_w))
1231 { 2169 {
2170 int fds [2];
2171
1232# if EV_USE_EVENTFD 2172# if EV_USE_EVENTFD
2173 fds [0] = -1;
1233 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2174 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1234 if (evfd < 0 && errno == EINVAL) 2175 if (fds [1] < 0 && errno == EINVAL)
1235 evfd = eventfd (0, 0); 2176 fds [1] = eventfd (0, 0);
1236 2177
1237 if (evfd >= 0) 2178 if (fds [1] < 0)
2179# endif
1238 { 2180 {
2181 while (pipe (fds))
2182 ev_syserr ("(libev) error creating signal/async pipe");
2183
2184 fd_intern (fds [0]);
2185 }
2186
1239 evpipe [0] = -1; 2187 evpipe [0] = fds [0];
1240 fd_intern (evfd); /* doing it twice doesn't hurt */ 2188
1241 ev_io_set (&pipe_w, evfd, EV_READ); 2189 if (evpipe [1] < 0)
2190 evpipe [1] = fds [1]; /* first call, set write fd */
2191 else
2192 {
2193 /* on subsequent calls, do not change evpipe [1] */
2194 /* so that evpipe_write can always rely on its value. */
2195 /* this branch does not do anything sensible on windows, */
2196 /* so must not be executed on windows */
2197
2198 dup2 (fds [1], evpipe [1]);
2199 close (fds [1]);
2200 }
2201
2202 fd_intern (evpipe [1]);
2203
2204 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2205 ev_io_start (EV_A_ &pipe_w);
2206 ev_unref (EV_A); /* watcher should not keep loop alive */
2207 }
2208}
2209
2210inline_speed void
2211evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2212{
2213 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2214
2215 if (expect_true (*flag))
2216 return;
2217
2218 *flag = 1;
2219 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2220
2221 pipe_write_skipped = 1;
2222
2223 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2224
2225 if (pipe_write_wanted)
2226 {
2227 int old_errno;
2228
2229 pipe_write_skipped = 0;
2230 ECB_MEMORY_FENCE_RELEASE;
2231
2232 old_errno = errno; /* save errno because write will clobber it */
2233
2234#if EV_USE_EVENTFD
2235 if (evpipe [0] < 0)
2236 {
2237 uint64_t counter = 1;
2238 write (evpipe [1], &counter, sizeof (uint64_t));
1242 } 2239 }
1243 else 2240 else
1244# endif 2241#endif
1245 { 2242 {
1246 while (pipe (evpipe)) 2243#ifdef _WIN32
1247 ev_syserr ("(libev) error creating signal/async pipe"); 2244 WSABUF buf;
1248 2245 DWORD sent;
1249 fd_intern (evpipe [0]); 2246 buf.buf = &buf;
1250 fd_intern (evpipe [1]); 2247 buf.len = 1;
1251 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2248 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2249#else
2250 write (evpipe [1], &(evpipe [1]), 1);
2251#endif
1252 } 2252 }
1253
1254 ev_io_start (EV_A_ &pipe_w);
1255 ev_unref (EV_A); /* watcher should not keep loop alive */
1256 }
1257}
1258
1259inline_size void
1260evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1261{
1262 if (!*flag)
1263 {
1264 int old_errno = errno; /* save errno because write might clobber it */
1265 char dummy;
1266
1267 *flag = 1;
1268
1269#if EV_USE_EVENTFD
1270 if (evfd >= 0)
1271 {
1272 uint64_t counter = 1;
1273 write (evfd, &counter, sizeof (uint64_t));
1274 }
1275 else
1276#endif
1277 write (evpipe [1], &dummy, 1);
1278 2253
1279 errno = old_errno; 2254 errno = old_errno;
1280 } 2255 }
1281} 2256}
1282 2257
… …
1285static void 2260static void
1286pipecb (EV_P_ ev_io *iow, int revents) 2261pipecb (EV_P_ ev_io *iow, int revents)
1287{ 2262{
1288 int i; 2263 int i;
1289 2264
2265 if (revents & EV_READ)
2266 {
1290#if EV_USE_EVENTFD 2267#if EV_USE_EVENTFD
1291 if (evfd >= 0) 2268 if (evpipe [0] < 0)
1292 { 2269 {
1293 uint64_t counter; 2270 uint64_t counter;
1294 read (evfd, &counter, sizeof (uint64_t)); 2271 read (evpipe [1], &counter, sizeof (uint64_t));
1295 } 2272 }
1296 else 2273 else
1297#endif 2274#endif
1298 { 2275 {
1299 char dummy; 2276 char dummy[4];
2277#ifdef _WIN32
2278 WSABUF buf;
2279 DWORD recvd;
2280 DWORD flags = 0;
2281 buf.buf = dummy;
2282 buf.len = sizeof (dummy);
2283 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2284#else
1300 read (evpipe [0], &dummy, 1); 2285 read (evpipe [0], &dummy, sizeof (dummy));
2286#endif
2287 }
1301 } 2288 }
1302 2289
2290 pipe_write_skipped = 0;
2291
2292 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2293
2294#if EV_SIGNAL_ENABLE
1303 if (sig_pending) 2295 if (sig_pending)
1304 { 2296 {
1305 sig_pending = 0; 2297 sig_pending = 0;
2298
2299 ECB_MEMORY_FENCE;
1306 2300
1307 for (i = EV_NSIG - 1; i--; ) 2301 for (i = EV_NSIG - 1; i--; )
1308 if (expect_false (signals [i].pending)) 2302 if (expect_false (signals [i].pending))
1309 ev_feed_signal_event (EV_A_ i + 1); 2303 ev_feed_signal_event (EV_A_ i + 1);
1310 } 2304 }
2305#endif
1311 2306
1312#if EV_ASYNC_ENABLE 2307#if EV_ASYNC_ENABLE
1313 if (async_pending) 2308 if (async_pending)
1314 { 2309 {
1315 async_pending = 0; 2310 async_pending = 0;
2311
2312 ECB_MEMORY_FENCE;
1316 2313
1317 for (i = asynccnt; i--; ) 2314 for (i = asynccnt; i--; )
1318 if (asyncs [i]->sent) 2315 if (asyncs [i]->sent)
1319 { 2316 {
1320 asyncs [i]->sent = 0; 2317 asyncs [i]->sent = 0;
2318 ECB_MEMORY_FENCE_RELEASE;
1321 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2319 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1322 } 2320 }
1323 } 2321 }
1324#endif 2322#endif
1325} 2323}
1326 2324
1327/*****************************************************************************/ 2325/*****************************************************************************/
1328 2326
2327void
2328ev_feed_signal (int signum) EV_THROW
2329{
2330#if EV_MULTIPLICITY
2331 EV_P;
2332 ECB_MEMORY_FENCE_ACQUIRE;
2333 EV_A = signals [signum - 1].loop;
2334
2335 if (!EV_A)
2336 return;
2337#endif
2338
2339 signals [signum - 1].pending = 1;
2340 evpipe_write (EV_A_ &sig_pending);
2341}
2342
1329static void 2343static void
1330ev_sighandler (int signum) 2344ev_sighandler (int signum)
1331{ 2345{
1332#if EV_MULTIPLICITY
1333 EV_P = signals [signum - 1].loop;
1334#endif
1335
1336#ifdef _WIN32 2346#ifdef _WIN32
1337 signal (signum, ev_sighandler); 2347 signal (signum, ev_sighandler);
1338#endif 2348#endif
1339 2349
1340 signals [signum - 1].pending = 1; 2350 ev_feed_signal (signum);
1341 evpipe_write (EV_A_ &sig_pending);
1342} 2351}
1343 2352
1344void noinline 2353void noinline
1345ev_feed_signal_event (EV_P_ int signum) 2354ev_feed_signal_event (EV_P_ int signum) EV_THROW
1346{ 2355{
1347 WL w; 2356 WL w;
1348 2357
1349 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2358 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1350 return; 2359 return;
1351 2360
1352 --signum; 2361 --signum;
1353 2362
1354#if EV_MULTIPLICITY 2363#if EV_MULTIPLICITY
… …
1358 if (expect_false (signals [signum].loop != EV_A)) 2367 if (expect_false (signals [signum].loop != EV_A))
1359 return; 2368 return;
1360#endif 2369#endif
1361 2370
1362 signals [signum].pending = 0; 2371 signals [signum].pending = 0;
2372 ECB_MEMORY_FENCE_RELEASE;
1363 2373
1364 for (w = signals [signum].head; w; w = w->next) 2374 for (w = signals [signum].head; w; w = w->next)
1365 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2375 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1366} 2376}
1367 2377
… …
1403child_reap (EV_P_ int chain, int pid, int status) 2413child_reap (EV_P_ int chain, int pid, int status)
1404{ 2414{
1405 ev_child *w; 2415 ev_child *w;
1406 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2416 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1407 2417
1408 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2418 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1409 { 2419 {
1410 if ((w->pid == pid || !w->pid) 2420 if ((w->pid == pid || !w->pid)
1411 && (!traced || (w->flags & 1))) 2421 && (!traced || (w->flags & 1)))
1412 { 2422 {
1413 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2423 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1438 /* make sure we are called again until all children have been reaped */ 2448 /* make sure we are called again until all children have been reaped */
1439 /* we need to do it this way so that the callback gets called before we continue */ 2449 /* we need to do it this way so that the callback gets called before we continue */
1440 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2450 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1441 2451
1442 child_reap (EV_A_ pid, pid, status); 2452 child_reap (EV_A_ pid, pid, status);
1443 if (EV_PID_HASHSIZE > 1) 2453 if ((EV_PID_HASHSIZE) > 1)
1444 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2454 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1445} 2455}
1446 2456
1447#endif 2457#endif
1448 2458
1449/*****************************************************************************/ 2459/*****************************************************************************/
1450 2460
2461#if EV_USE_IOCP
2462# include "ev_iocp.c"
2463#endif
1451#if EV_USE_PORT 2464#if EV_USE_PORT
1452# include "ev_port.c" 2465# include "ev_port.c"
1453#endif 2466#endif
1454#if EV_USE_KQUEUE 2467#if EV_USE_KQUEUE
1455# include "ev_kqueue.c" 2468# include "ev_kqueue.c"
… …
1462#endif 2475#endif
1463#if EV_USE_SELECT 2476#if EV_USE_SELECT
1464# include "ev_select.c" 2477# include "ev_select.c"
1465#endif 2478#endif
1466 2479
1467int 2480int ecb_cold
1468ev_version_major (void) 2481ev_version_major (void) EV_THROW
1469{ 2482{
1470 return EV_VERSION_MAJOR; 2483 return EV_VERSION_MAJOR;
1471} 2484}
1472 2485
1473int 2486int ecb_cold
1474ev_version_minor (void) 2487ev_version_minor (void) EV_THROW
1475{ 2488{
1476 return EV_VERSION_MINOR; 2489 return EV_VERSION_MINOR;
1477} 2490}
1478 2491
1479/* return true if we are running with elevated privileges and should ignore env variables */ 2492/* return true if we are running with elevated privileges and should ignore env variables */
1480int inline_size 2493int inline_size ecb_cold
1481enable_secure (void) 2494enable_secure (void)
1482{ 2495{
1483#ifdef _WIN32 2496#ifdef _WIN32
1484 return 0; 2497 return 0;
1485#else 2498#else
1486 return getuid () != geteuid () 2499 return getuid () != geteuid ()
1487 || getgid () != getegid (); 2500 || getgid () != getegid ();
1488#endif 2501#endif
1489} 2502}
1490 2503
1491unsigned int 2504unsigned int ecb_cold
1492ev_supported_backends (void) 2505ev_supported_backends (void) EV_THROW
1493{ 2506{
1494 unsigned int flags = 0; 2507 unsigned int flags = 0;
1495 2508
1496 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2509 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1497 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2510 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1500 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2513 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1501 2514
1502 return flags; 2515 return flags;
1503} 2516}
1504 2517
1505unsigned int 2518unsigned int ecb_cold
1506ev_recommended_backends (void) 2519ev_recommended_backends (void) EV_THROW
1507{ 2520{
1508 unsigned int flags = ev_supported_backends (); 2521 unsigned int flags = ev_supported_backends ();
1509 2522
1510#ifndef __NetBSD__ 2523#ifndef __NetBSD__
1511 /* kqueue is borked on everything but netbsd apparently */ 2524 /* kqueue is borked on everything but netbsd apparently */
… …
1515#ifdef __APPLE__ 2528#ifdef __APPLE__
1516 /* only select works correctly on that "unix-certified" platform */ 2529 /* only select works correctly on that "unix-certified" platform */
1517 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2530 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1518 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2531 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1519#endif 2532#endif
2533#ifdef __FreeBSD__
2534 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2535#endif
1520 2536
1521 return flags; 2537 return flags;
1522} 2538}
1523 2539
2540unsigned int ecb_cold
2541ev_embeddable_backends (void) EV_THROW
2542{
2543 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2544
2545 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2546 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2547 flags &= ~EVBACKEND_EPOLL;
2548
2549 return flags;
2550}
2551
1524unsigned int 2552unsigned int
1525ev_embeddable_backends (void) 2553ev_backend (EV_P) EV_THROW
1526{ 2554{
1527 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2555 return backend;
1528
1529 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1530 /* please fix it and tell me how to detect the fix */
1531 flags &= ~EVBACKEND_EPOLL;
1532
1533 return flags;
1534} 2556}
1535 2557
2558#if EV_FEATURE_API
1536unsigned int 2559unsigned int
1537ev_backend (EV_P) 2560ev_iteration (EV_P) EV_THROW
1538{ 2561{
1539 return backend; 2562 return loop_count;
1540} 2563}
1541 2564
1542#if EV_MINIMAL < 2
1543unsigned int 2565unsigned int
1544ev_loop_count (EV_P) 2566ev_depth (EV_P) EV_THROW
1545{
1546 return loop_count;
1547}
1548
1549unsigned int
1550ev_loop_depth (EV_P)
1551{ 2567{
1552 return loop_depth; 2568 return loop_depth;
1553} 2569}
1554 2570
1555void 2571void
1556ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2572ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1557{ 2573{
1558 io_blocktime = interval; 2574 io_blocktime = interval;
1559} 2575}
1560 2576
1561void 2577void
1562ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2578ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1563{ 2579{
1564 timeout_blocktime = interval; 2580 timeout_blocktime = interval;
1565} 2581}
1566 2582
1567void 2583void
1568ev_set_userdata (EV_P_ void *data) 2584ev_set_userdata (EV_P_ void *data) EV_THROW
1569{ 2585{
1570 userdata = data; 2586 userdata = data;
1571} 2587}
1572 2588
1573void * 2589void *
1574ev_userdata (EV_P) 2590ev_userdata (EV_P) EV_THROW
1575{ 2591{
1576 return userdata; 2592 return userdata;
1577} 2593}
1578 2594
2595void
1579void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2596ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1580{ 2597{
1581 invoke_cb = invoke_pending_cb; 2598 invoke_cb = invoke_pending_cb;
1582} 2599}
1583 2600
1584void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2601void
2602ev_set_loop_release_cb (EV_P_ ev_loop_callback_nothrow release, ev_loop_callback_nothrow acquire) EV_THROW
1585{ 2603{
1586 release_cb = release; 2604 release_cb = release;
1587 acquire_cb = acquire; 2605 acquire_cb = acquire;
1588} 2606}
1589#endif 2607#endif
1590 2608
1591/* initialise a loop structure, must be zero-initialised */ 2609/* initialise a loop structure, must be zero-initialised */
1592static void noinline 2610static void noinline ecb_cold
1593loop_init (EV_P_ unsigned int flags) 2611loop_init (EV_P_ unsigned int flags) EV_THROW
1594{ 2612{
1595 if (!backend) 2613 if (!backend)
1596 { 2614 {
2615 origflags = flags;
2616
1597#if EV_USE_REALTIME 2617#if EV_USE_REALTIME
1598 if (!have_realtime) 2618 if (!have_realtime)
1599 { 2619 {
1600 struct timespec ts; 2620 struct timespec ts;
1601 2621
… …
1623 if (!(flags & EVFLAG_NOENV) 2643 if (!(flags & EVFLAG_NOENV)
1624 && !enable_secure () 2644 && !enable_secure ()
1625 && getenv ("LIBEV_FLAGS")) 2645 && getenv ("LIBEV_FLAGS"))
1626 flags = atoi (getenv ("LIBEV_FLAGS")); 2646 flags = atoi (getenv ("LIBEV_FLAGS"));
1627 2647
1628 ev_rt_now = ev_time (); 2648 ev_rt_now = ev_time ();
1629 mn_now = get_clock (); 2649 mn_now = get_clock ();
1630 now_floor = mn_now; 2650 now_floor = mn_now;
1631 rtmn_diff = ev_rt_now - mn_now; 2651 rtmn_diff = ev_rt_now - mn_now;
1632#if EV_MINIMAL < 2 2652#if EV_FEATURE_API
1633 invoke_cb = ev_invoke_pending; 2653 invoke_cb = ev_invoke_pending;
1634#endif 2654#endif
1635 2655
1636 io_blocktime = 0.; 2656 io_blocktime = 0.;
1637 timeout_blocktime = 0.; 2657 timeout_blocktime = 0.;
1638 backend = 0; 2658 backend = 0;
1639 backend_fd = -1; 2659 backend_fd = -1;
1640 sig_pending = 0; 2660 sig_pending = 0;
1641#if EV_ASYNC_ENABLE 2661#if EV_ASYNC_ENABLE
1642 async_pending = 0; 2662 async_pending = 0;
1643#endif 2663#endif
2664 pipe_write_skipped = 0;
2665 pipe_write_wanted = 0;
2666 evpipe [0] = -1;
2667 evpipe [1] = -1;
1644#if EV_USE_INOTIFY 2668#if EV_USE_INOTIFY
1645 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2669 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1646#endif 2670#endif
1647#if EV_USE_SIGNALFD 2671#if EV_USE_SIGNALFD
1648 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2672 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1649#endif 2673#endif
1650 2674
1651 if (!(flags & 0x0000ffffU)) 2675 if (!(flags & EVBACKEND_MASK))
1652 flags |= ev_recommended_backends (); 2676 flags |= ev_recommended_backends ();
1653 2677
2678#if EV_USE_IOCP
2679 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2680#endif
1654#if EV_USE_PORT 2681#if EV_USE_PORT
1655 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2682 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1656#endif 2683#endif
1657#if EV_USE_KQUEUE 2684#if EV_USE_KQUEUE
1658 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2685 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1675#endif 2702#endif
1676 } 2703 }
1677} 2704}
1678 2705
1679/* free up a loop structure */ 2706/* free up a loop structure */
1680static void noinline 2707void ecb_cold
1681loop_destroy (EV_P) 2708ev_loop_destroy (EV_P)
1682{ 2709{
1683 int i; 2710 int i;
2711
2712#if EV_MULTIPLICITY
2713 /* mimic free (0) */
2714 if (!EV_A)
2715 return;
2716#endif
2717
2718#if EV_CLEANUP_ENABLE
2719 /* queue cleanup watchers (and execute them) */
2720 if (expect_false (cleanupcnt))
2721 {
2722 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2723 EV_INVOKE_PENDING;
2724 }
2725#endif
2726
2727#if EV_CHILD_ENABLE
2728 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2729 {
2730 ev_ref (EV_A); /* child watcher */
2731 ev_signal_stop (EV_A_ &childev);
2732 }
2733#endif
1684 2734
1685 if (ev_is_active (&pipe_w)) 2735 if (ev_is_active (&pipe_w))
1686 { 2736 {
1687 /*ev_ref (EV_A);*/ 2737 /*ev_ref (EV_A);*/
1688 /*ev_io_stop (EV_A_ &pipe_w);*/ 2738 /*ev_io_stop (EV_A_ &pipe_w);*/
1689 2739
1690#if EV_USE_EVENTFD
1691 if (evfd >= 0)
1692 close (evfd);
1693#endif
1694
1695 if (evpipe [0] >= 0)
1696 {
1697 EV_WIN32_CLOSE_FD (evpipe [0]); 2740 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1698 EV_WIN32_CLOSE_FD (evpipe [1]); 2741 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1699 }
1700 } 2742 }
1701 2743
1702#if EV_USE_SIGNALFD 2744#if EV_USE_SIGNALFD
1703 if (ev_is_active (&sigfd_w)) 2745 if (ev_is_active (&sigfd_w))
1704 close (sigfd); 2746 close (sigfd);
… …
1710#endif 2752#endif
1711 2753
1712 if (backend_fd >= 0) 2754 if (backend_fd >= 0)
1713 close (backend_fd); 2755 close (backend_fd);
1714 2756
2757#if EV_USE_IOCP
2758 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2759#endif
1715#if EV_USE_PORT 2760#if EV_USE_PORT
1716 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2761 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1717#endif 2762#endif
1718#if EV_USE_KQUEUE 2763#if EV_USE_KQUEUE
1719 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2764 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1746 array_free (periodic, EMPTY); 2791 array_free (periodic, EMPTY);
1747#endif 2792#endif
1748#if EV_FORK_ENABLE 2793#if EV_FORK_ENABLE
1749 array_free (fork, EMPTY); 2794 array_free (fork, EMPTY);
1750#endif 2795#endif
2796#if EV_CLEANUP_ENABLE
2797 array_free (cleanup, EMPTY);
2798#endif
1751 array_free (prepare, EMPTY); 2799 array_free (prepare, EMPTY);
1752 array_free (check, EMPTY); 2800 array_free (check, EMPTY);
1753#if EV_ASYNC_ENABLE 2801#if EV_ASYNC_ENABLE
1754 array_free (async, EMPTY); 2802 array_free (async, EMPTY);
1755#endif 2803#endif
1756 2804
1757 backend = 0; 2805 backend = 0;
2806
2807#if EV_MULTIPLICITY
2808 if (ev_is_default_loop (EV_A))
2809#endif
2810 ev_default_loop_ptr = 0;
2811#if EV_MULTIPLICITY
2812 else
2813 ev_free (EV_A);
2814#endif
1758} 2815}
1759 2816
1760#if EV_USE_INOTIFY 2817#if EV_USE_INOTIFY
1761inline_size void infy_fork (EV_P); 2818inline_size void infy_fork (EV_P);
1762#endif 2819#endif
… …
1775#endif 2832#endif
1776#if EV_USE_INOTIFY 2833#if EV_USE_INOTIFY
1777 infy_fork (EV_A); 2834 infy_fork (EV_A);
1778#endif 2835#endif
1779 2836
2837#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1780 if (ev_is_active (&pipe_w)) 2838 if (ev_is_active (&pipe_w))
1781 { 2839 {
1782 /* this "locks" the handlers against writing to the pipe */ 2840 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1783 /* while we modify the fd vars */
1784 sig_pending = 1;
1785#if EV_ASYNC_ENABLE
1786 async_pending = 1;
1787#endif
1788 2841
1789 ev_ref (EV_A); 2842 ev_ref (EV_A);
1790 ev_io_stop (EV_A_ &pipe_w); 2843 ev_io_stop (EV_A_ &pipe_w);
1791 2844
1792#if EV_USE_EVENTFD
1793 if (evfd >= 0)
1794 close (evfd);
1795#endif
1796
1797 if (evpipe [0] >= 0) 2845 if (evpipe [0] >= 0)
1798 {
1799 EV_WIN32_CLOSE_FD (evpipe [0]); 2846 EV_WIN32_CLOSE_FD (evpipe [0]);
1800 EV_WIN32_CLOSE_FD (evpipe [1]);
1801 }
1802 2847
1803#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1804 evpipe_init (EV_A); 2848 evpipe_init (EV_A);
1805 /* now iterate over everything, in case we missed something */ 2849 /* iterate over everything, in case we missed something before */
1806 pipecb (EV_A_ &pipe_w, EV_READ); 2850 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1807#endif
1808 } 2851 }
2852#endif
1809 2853
1810 postfork = 0; 2854 postfork = 0;
1811} 2855}
1812 2856
1813#if EV_MULTIPLICITY 2857#if EV_MULTIPLICITY
1814 2858
1815struct ev_loop * 2859struct ev_loop * ecb_cold
1816ev_loop_new (unsigned int flags) 2860ev_loop_new (unsigned int flags) EV_THROW
1817{ 2861{
1818 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2862 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1819 2863
1820 memset (EV_A, 0, sizeof (struct ev_loop)); 2864 memset (EV_A, 0, sizeof (struct ev_loop));
1821 loop_init (EV_A_ flags); 2865 loop_init (EV_A_ flags);
1822 2866
1823 if (ev_backend (EV_A)) 2867 if (ev_backend (EV_A))
1824 return EV_A; 2868 return EV_A;
1825 2869
2870 ev_free (EV_A);
1826 return 0; 2871 return 0;
1827} 2872}
1828 2873
1829void
1830ev_loop_destroy (EV_P)
1831{
1832 loop_destroy (EV_A);
1833 ev_free (loop);
1834}
1835
1836void
1837ev_loop_fork (EV_P)
1838{
1839 postfork = 1; /* must be in line with ev_default_fork */
1840}
1841#endif /* multiplicity */ 2874#endif /* multiplicity */
1842 2875
1843#if EV_VERIFY 2876#if EV_VERIFY
1844static void noinline 2877static void noinline ecb_cold
1845verify_watcher (EV_P_ W w) 2878verify_watcher (EV_P_ W w)
1846{ 2879{
1847 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2880 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1848 2881
1849 if (w->pending) 2882 if (w->pending)
1850 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2883 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1851} 2884}
1852 2885
1853static void noinline 2886static void noinline ecb_cold
1854verify_heap (EV_P_ ANHE *heap, int N) 2887verify_heap (EV_P_ ANHE *heap, int N)
1855{ 2888{
1856 int i; 2889 int i;
1857 2890
1858 for (i = HEAP0; i < N + HEAP0; ++i) 2891 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1863 2896
1864 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2897 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1865 } 2898 }
1866} 2899}
1867 2900
1868static void noinline 2901static void noinline ecb_cold
1869array_verify (EV_P_ W *ws, int cnt) 2902array_verify (EV_P_ W *ws, int cnt)
1870{ 2903{
1871 while (cnt--) 2904 while (cnt--)
1872 { 2905 {
1873 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2906 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1874 verify_watcher (EV_A_ ws [cnt]); 2907 verify_watcher (EV_A_ ws [cnt]);
1875 } 2908 }
1876} 2909}
1877#endif 2910#endif
1878 2911
1879#if EV_MINIMAL < 2 2912#if EV_FEATURE_API
1880void 2913void ecb_cold
1881ev_loop_verify (EV_P) 2914ev_verify (EV_P) EV_THROW
1882{ 2915{
1883#if EV_VERIFY 2916#if EV_VERIFY
1884 int i; 2917 int i;
1885 WL w; 2918 WL w, w2;
1886 2919
1887 assert (activecnt >= -1); 2920 assert (activecnt >= -1);
1888 2921
1889 assert (fdchangemax >= fdchangecnt); 2922 assert (fdchangemax >= fdchangecnt);
1890 for (i = 0; i < fdchangecnt; ++i) 2923 for (i = 0; i < fdchangecnt; ++i)
1891 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2924 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1892 2925
1893 assert (anfdmax >= 0); 2926 assert (anfdmax >= 0);
1894 for (i = 0; i < anfdmax; ++i) 2927 for (i = 0; i < anfdmax; ++i)
2928 {
2929 int j = 0;
2930
1895 for (w = anfds [i].head; w; w = w->next) 2931 for (w = w2 = anfds [i].head; w; w = w->next)
1896 { 2932 {
1897 verify_watcher (EV_A_ (W)w); 2933 verify_watcher (EV_A_ (W)w);
2934
2935 if (j++ & 1)
2936 {
2937 assert (("libev: io watcher list contains a loop", w != w2));
2938 w2 = w2->next;
2939 }
2940
1898 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2941 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1899 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2942 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1900 } 2943 }
2944 }
1901 2945
1902 assert (timermax >= timercnt); 2946 assert (timermax >= timercnt);
1903 verify_heap (EV_A_ timers, timercnt); 2947 verify_heap (EV_A_ timers, timercnt);
1904 2948
1905#if EV_PERIODIC_ENABLE 2949#if EV_PERIODIC_ENABLE
… …
1920#if EV_FORK_ENABLE 2964#if EV_FORK_ENABLE
1921 assert (forkmax >= forkcnt); 2965 assert (forkmax >= forkcnt);
1922 array_verify (EV_A_ (W *)forks, forkcnt); 2966 array_verify (EV_A_ (W *)forks, forkcnt);
1923#endif 2967#endif
1924 2968
2969#if EV_CLEANUP_ENABLE
2970 assert (cleanupmax >= cleanupcnt);
2971 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2972#endif
2973
1925#if EV_ASYNC_ENABLE 2974#if EV_ASYNC_ENABLE
1926 assert (asyncmax >= asynccnt); 2975 assert (asyncmax >= asynccnt);
1927 array_verify (EV_A_ (W *)asyncs, asynccnt); 2976 array_verify (EV_A_ (W *)asyncs, asynccnt);
1928#endif 2977#endif
1929 2978
… …
1937 array_verify (EV_A_ (W *)checks, checkcnt); 2986 array_verify (EV_A_ (W *)checks, checkcnt);
1938#endif 2987#endif
1939 2988
1940# if 0 2989# if 0
1941#if EV_CHILD_ENABLE 2990#if EV_CHILD_ENABLE
1942 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2991 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1943 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2992 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1944#endif 2993#endif
1945# endif 2994# endif
1946#endif 2995#endif
1947} 2996}
1948#endif 2997#endif
1949 2998
1950#if EV_MULTIPLICITY 2999#if EV_MULTIPLICITY
1951struct ev_loop * 3000struct ev_loop * ecb_cold
1952ev_default_loop_init (unsigned int flags)
1953#else 3001#else
1954int 3002int
3003#endif
1955ev_default_loop (unsigned int flags) 3004ev_default_loop (unsigned int flags) EV_THROW
1956#endif
1957{ 3005{
1958 if (!ev_default_loop_ptr) 3006 if (!ev_default_loop_ptr)
1959 { 3007 {
1960#if EV_MULTIPLICITY 3008#if EV_MULTIPLICITY
1961 EV_P = ev_default_loop_ptr = &default_loop_struct; 3009 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1980 3028
1981 return ev_default_loop_ptr; 3029 return ev_default_loop_ptr;
1982} 3030}
1983 3031
1984void 3032void
1985ev_default_destroy (void) 3033ev_loop_fork (EV_P) EV_THROW
1986{ 3034{
1987#if EV_MULTIPLICITY 3035 postfork = 1;
1988 EV_P = ev_default_loop_ptr;
1989#endif
1990
1991 ev_default_loop_ptr = 0;
1992
1993#if EV_CHILD_ENABLE
1994 ev_ref (EV_A); /* child watcher */
1995 ev_signal_stop (EV_A_ &childev);
1996#endif
1997
1998 loop_destroy (EV_A);
1999}
2000
2001void
2002ev_default_fork (void)
2003{
2004#if EV_MULTIPLICITY
2005 EV_P = ev_default_loop_ptr;
2006#endif
2007
2008 postfork = 1; /* must be in line with ev_loop_fork */
2009} 3036}
2010 3037
2011/*****************************************************************************/ 3038/*****************************************************************************/
2012 3039
2013void 3040void
… …
2015{ 3042{
2016 EV_CB_INVOKE ((W)w, revents); 3043 EV_CB_INVOKE ((W)w, revents);
2017} 3044}
2018 3045
2019unsigned int 3046unsigned int
2020ev_pending_count (EV_P) 3047ev_pending_count (EV_P) EV_THROW
2021{ 3048{
2022 int pri; 3049 int pri;
2023 unsigned int count = 0; 3050 unsigned int count = 0;
2024 3051
2025 for (pri = NUMPRI; pri--; ) 3052 for (pri = NUMPRI; pri--; )
… …
2029} 3056}
2030 3057
2031void noinline 3058void noinline
2032ev_invoke_pending (EV_P) 3059ev_invoke_pending (EV_P)
2033{ 3060{
2034 int pri; 3061 pendingpri = NUMPRI;
2035 3062
2036 for (pri = NUMPRI; pri--; ) 3063 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3064 {
3065 --pendingpri;
3066
2037 while (pendingcnt [pri]) 3067 while (pendingcnt [pendingpri])
2038 { 3068 {
2039 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3069 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2040 3070
2041 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2042 /* ^ this is no longer true, as pending_w could be here */
2043
2044 p->w->pending = 0; 3071 p->w->pending = 0;
2045 EV_CB_INVOKE (p->w, p->events); 3072 EV_CB_INVOKE (p->w, p->events);
2046 EV_FREQUENT_CHECK; 3073 EV_FREQUENT_CHECK;
2047 } 3074 }
3075 }
2048} 3076}
2049 3077
2050#if EV_IDLE_ENABLE 3078#if EV_IDLE_ENABLE
2051/* make idle watchers pending. this handles the "call-idle */ 3079/* make idle watchers pending. this handles the "call-idle */
2052/* only when higher priorities are idle" logic */ 3080/* only when higher priorities are idle" logic */
… …
2104 EV_FREQUENT_CHECK; 3132 EV_FREQUENT_CHECK;
2105 feed_reverse (EV_A_ (W)w); 3133 feed_reverse (EV_A_ (W)w);
2106 } 3134 }
2107 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3135 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2108 3136
2109 feed_reverse_done (EV_A_ EV_TIMEOUT); 3137 feed_reverse_done (EV_A_ EV_TIMER);
2110 } 3138 }
2111} 3139}
2112 3140
2113#if EV_PERIODIC_ENABLE 3141#if EV_PERIODIC_ENABLE
3142
3143static void noinline
3144periodic_recalc (EV_P_ ev_periodic *w)
3145{
3146 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3147 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3148
3149 /* the above almost always errs on the low side */
3150 while (at <= ev_rt_now)
3151 {
3152 ev_tstamp nat = at + w->interval;
3153
3154 /* when resolution fails us, we use ev_rt_now */
3155 if (expect_false (nat == at))
3156 {
3157 at = ev_rt_now;
3158 break;
3159 }
3160
3161 at = nat;
3162 }
3163
3164 ev_at (w) = at;
3165}
3166
2114/* make periodics pending */ 3167/* make periodics pending */
2115inline_size void 3168inline_size void
2116periodics_reify (EV_P) 3169periodics_reify (EV_P)
2117{ 3170{
2118 EV_FREQUENT_CHECK; 3171 EV_FREQUENT_CHECK;
2119 3172
2120 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3173 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2121 { 3174 {
2122 int feed_count = 0;
2123
2124 do 3175 do
2125 { 3176 {
2126 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3177 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2127 3178
2128 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3179 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2137 ANHE_at_cache (periodics [HEAP0]); 3188 ANHE_at_cache (periodics [HEAP0]);
2138 downheap (periodics, periodiccnt, HEAP0); 3189 downheap (periodics, periodiccnt, HEAP0);
2139 } 3190 }
2140 else if (w->interval) 3191 else if (w->interval)
2141 { 3192 {
2142 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3193 periodic_recalc (EV_A_ w);
2143 /* if next trigger time is not sufficiently in the future, put it there */
2144 /* this might happen because of floating point inexactness */
2145 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2146 {
2147 ev_at (w) += w->interval;
2148
2149 /* if interval is unreasonably low we might still have a time in the past */
2150 /* so correct this. this will make the periodic very inexact, but the user */
2151 /* has effectively asked to get triggered more often than possible */
2152 if (ev_at (w) < ev_rt_now)
2153 ev_at (w) = ev_rt_now;
2154 }
2155
2156 ANHE_at_cache (periodics [HEAP0]); 3194 ANHE_at_cache (periodics [HEAP0]);
2157 downheap (periodics, periodiccnt, HEAP0); 3195 downheap (periodics, periodiccnt, HEAP0);
2158 } 3196 }
2159 else 3197 else
2160 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3198 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2167 feed_reverse_done (EV_A_ EV_PERIODIC); 3205 feed_reverse_done (EV_A_ EV_PERIODIC);
2168 } 3206 }
2169} 3207}
2170 3208
2171/* simply recalculate all periodics */ 3209/* simply recalculate all periodics */
2172/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3210/* TODO: maybe ensure that at least one event happens when jumping forward? */
2173static void noinline 3211static void noinline ecb_cold
2174periodics_reschedule (EV_P) 3212periodics_reschedule (EV_P)
2175{ 3213{
2176 int i; 3214 int i;
2177 3215
2178 /* adjust periodics after time jump */ 3216 /* adjust periodics after time jump */
… …
2181 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3219 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2182 3220
2183 if (w->reschedule_cb) 3221 if (w->reschedule_cb)
2184 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3222 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2185 else if (w->interval) 3223 else if (w->interval)
2186 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3224 periodic_recalc (EV_A_ w);
2187 3225
2188 ANHE_at_cache (periodics [i]); 3226 ANHE_at_cache (periodics [i]);
2189 } 3227 }
2190 3228
2191 reheap (periodics, periodiccnt); 3229 reheap (periodics, periodiccnt);
2192} 3230}
2193#endif 3231#endif
2194 3232
2195/* adjust all timers by a given offset */ 3233/* adjust all timers by a given offset */
2196static void noinline 3234static void noinline ecb_cold
2197timers_reschedule (EV_P_ ev_tstamp adjust) 3235timers_reschedule (EV_P_ ev_tstamp adjust)
2198{ 3236{
2199 int i; 3237 int i;
2200 3238
2201 for (i = 0; i < timercnt; ++i) 3239 for (i = 0; i < timercnt; ++i)
… …
2238 * doesn't hurt either as we only do this on time-jumps or 3276 * doesn't hurt either as we only do this on time-jumps or
2239 * in the unlikely event of having been preempted here. 3277 * in the unlikely event of having been preempted here.
2240 */ 3278 */
2241 for (i = 4; --i; ) 3279 for (i = 4; --i; )
2242 { 3280 {
3281 ev_tstamp diff;
2243 rtmn_diff = ev_rt_now - mn_now; 3282 rtmn_diff = ev_rt_now - mn_now;
2244 3283
3284 diff = odiff - rtmn_diff;
3285
2245 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3286 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2246 return; /* all is well */ 3287 return; /* all is well */
2247 3288
2248 ev_rt_now = ev_time (); 3289 ev_rt_now = ev_time ();
2249 mn_now = get_clock (); 3290 mn_now = get_clock ();
2250 now_floor = mn_now; 3291 now_floor = mn_now;
… …
2272 3313
2273 mn_now = ev_rt_now; 3314 mn_now = ev_rt_now;
2274 } 3315 }
2275} 3316}
2276 3317
2277void 3318int
2278ev_loop (EV_P_ int flags) 3319ev_run (EV_P_ int flags)
2279{ 3320{
2280#if EV_MINIMAL < 2 3321#if EV_FEATURE_API
2281 ++loop_depth; 3322 ++loop_depth;
2282#endif 3323#endif
2283 3324
2284 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3325 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2285 3326
2286 loop_done = EVUNLOOP_CANCEL; 3327 loop_done = EVBREAK_CANCEL;
2287 3328
2288 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3329 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2289 3330
2290 do 3331 do
2291 { 3332 {
2292#if EV_VERIFY >= 2 3333#if EV_VERIFY >= 2
2293 ev_loop_verify (EV_A); 3334 ev_verify (EV_A);
2294#endif 3335#endif
2295 3336
2296#ifndef _WIN32 3337#ifndef _WIN32
2297 if (expect_false (curpid)) /* penalise the forking check even more */ 3338 if (expect_false (curpid)) /* penalise the forking check even more */
2298 if (expect_false (getpid () != curpid)) 3339 if (expect_false (getpid () != curpid))
… …
2334 /* calculate blocking time */ 3375 /* calculate blocking time */
2335 { 3376 {
2336 ev_tstamp waittime = 0.; 3377 ev_tstamp waittime = 0.;
2337 ev_tstamp sleeptime = 0.; 3378 ev_tstamp sleeptime = 0.;
2338 3379
3380 /* remember old timestamp for io_blocktime calculation */
3381 ev_tstamp prev_mn_now = mn_now;
3382
3383 /* update time to cancel out callback processing overhead */
3384 time_update (EV_A_ 1e100);
3385
3386 /* from now on, we want a pipe-wake-up */
3387 pipe_write_wanted = 1;
3388
3389 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3390
2339 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3391 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2340 { 3392 {
2341 /* remember old timestamp for io_blocktime calculation */
2342 ev_tstamp prev_mn_now = mn_now;
2343
2344 /* update time to cancel out callback processing overhead */
2345 time_update (EV_A_ 1e100);
2346
2347 waittime = MAX_BLOCKTIME; 3393 waittime = MAX_BLOCKTIME;
2348 3394
2349 if (timercnt) 3395 if (timercnt)
2350 { 3396 {
2351 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3397 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2352 if (waittime > to) waittime = to; 3398 if (waittime > to) waittime = to;
2353 } 3399 }
2354 3400
2355#if EV_PERIODIC_ENABLE 3401#if EV_PERIODIC_ENABLE
2356 if (periodiccnt) 3402 if (periodiccnt)
2357 { 3403 {
2358 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3404 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2359 if (waittime > to) waittime = to; 3405 if (waittime > to) waittime = to;
2360 } 3406 }
2361#endif 3407#endif
2362 3408
2363 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3409 /* don't let timeouts decrease the waittime below timeout_blocktime */
2364 if (expect_false (waittime < timeout_blocktime)) 3410 if (expect_false (waittime < timeout_blocktime))
2365 waittime = timeout_blocktime; 3411 waittime = timeout_blocktime;
3412
3413 /* at this point, we NEED to wait, so we have to ensure */
3414 /* to pass a minimum nonzero value to the backend */
3415 if (expect_false (waittime < backend_mintime))
3416 waittime = backend_mintime;
2366 3417
2367 /* extra check because io_blocktime is commonly 0 */ 3418 /* extra check because io_blocktime is commonly 0 */
2368 if (expect_false (io_blocktime)) 3419 if (expect_false (io_blocktime))
2369 { 3420 {
2370 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3421 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2371 3422
2372 if (sleeptime > waittime - backend_fudge) 3423 if (sleeptime > waittime - backend_mintime)
2373 sleeptime = waittime - backend_fudge; 3424 sleeptime = waittime - backend_mintime;
2374 3425
2375 if (expect_true (sleeptime > 0.)) 3426 if (expect_true (sleeptime > 0.))
2376 { 3427 {
2377 ev_sleep (sleeptime); 3428 ev_sleep (sleeptime);
2378 waittime -= sleeptime; 3429 waittime -= sleeptime;
2379 } 3430 }
2380 } 3431 }
2381 } 3432 }
2382 3433
2383#if EV_MINIMAL < 2 3434#if EV_FEATURE_API
2384 ++loop_count; 3435 ++loop_count;
2385#endif 3436#endif
2386 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3437 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2387 backend_poll (EV_A_ waittime); 3438 backend_poll (EV_A_ waittime);
2388 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3439 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3440
3441 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3442
3443 ECB_MEMORY_FENCE_ACQUIRE;
3444 if (pipe_write_skipped)
3445 {
3446 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3447 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3448 }
3449
2389 3450
2390 /* update ev_rt_now, do magic */ 3451 /* update ev_rt_now, do magic */
2391 time_update (EV_A_ waittime + sleeptime); 3452 time_update (EV_A_ waittime + sleeptime);
2392 } 3453 }
2393 3454
… …
2411 EV_INVOKE_PENDING; 3472 EV_INVOKE_PENDING;
2412 } 3473 }
2413 while (expect_true ( 3474 while (expect_true (
2414 activecnt 3475 activecnt
2415 && !loop_done 3476 && !loop_done
2416 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3477 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2417 )); 3478 ));
2418 3479
2419 if (loop_done == EVUNLOOP_ONE) 3480 if (loop_done == EVBREAK_ONE)
2420 loop_done = EVUNLOOP_CANCEL; 3481 loop_done = EVBREAK_CANCEL;
2421 3482
2422#if EV_MINIMAL < 2 3483#if EV_FEATURE_API
2423 --loop_depth; 3484 --loop_depth;
2424#endif 3485#endif
3486
3487 return activecnt;
2425} 3488}
2426 3489
2427void 3490void
2428ev_unloop (EV_P_ int how) 3491ev_break (EV_P_ int how) EV_THROW
2429{ 3492{
2430 loop_done = how; 3493 loop_done = how;
2431} 3494}
2432 3495
2433void 3496void
2434ev_ref (EV_P) 3497ev_ref (EV_P) EV_THROW
2435{ 3498{
2436 ++activecnt; 3499 ++activecnt;
2437} 3500}
2438 3501
2439void 3502void
2440ev_unref (EV_P) 3503ev_unref (EV_P) EV_THROW
2441{ 3504{
2442 --activecnt; 3505 --activecnt;
2443} 3506}
2444 3507
2445void 3508void
2446ev_now_update (EV_P) 3509ev_now_update (EV_P) EV_THROW
2447{ 3510{
2448 time_update (EV_A_ 1e100); 3511 time_update (EV_A_ 1e100);
2449} 3512}
2450 3513
2451void 3514void
2452ev_suspend (EV_P) 3515ev_suspend (EV_P) EV_THROW
2453{ 3516{
2454 ev_now_update (EV_A); 3517 ev_now_update (EV_A);
2455} 3518}
2456 3519
2457void 3520void
2458ev_resume (EV_P) 3521ev_resume (EV_P) EV_THROW
2459{ 3522{
2460 ev_tstamp mn_prev = mn_now; 3523 ev_tstamp mn_prev = mn_now;
2461 3524
2462 ev_now_update (EV_A); 3525 ev_now_update (EV_A);
2463 timers_reschedule (EV_A_ mn_now - mn_prev); 3526 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2502 w->pending = 0; 3565 w->pending = 0;
2503 } 3566 }
2504} 3567}
2505 3568
2506int 3569int
2507ev_clear_pending (EV_P_ void *w) 3570ev_clear_pending (EV_P_ void *w) EV_THROW
2508{ 3571{
2509 W w_ = (W)w; 3572 W w_ = (W)w;
2510 int pending = w_->pending; 3573 int pending = w_->pending;
2511 3574
2512 if (expect_true (pending)) 3575 if (expect_true (pending))
… …
2545} 3608}
2546 3609
2547/*****************************************************************************/ 3610/*****************************************************************************/
2548 3611
2549void noinline 3612void noinline
2550ev_io_start (EV_P_ ev_io *w) 3613ev_io_start (EV_P_ ev_io *w) EV_THROW
2551{ 3614{
2552 int fd = w->fd; 3615 int fd = w->fd;
2553 3616
2554 if (expect_false (ev_is_active (w))) 3617 if (expect_false (ev_is_active (w)))
2555 return; 3618 return;
… …
2561 3624
2562 ev_start (EV_A_ (W)w, 1); 3625 ev_start (EV_A_ (W)w, 1);
2563 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3626 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2564 wlist_add (&anfds[fd].head, (WL)w); 3627 wlist_add (&anfds[fd].head, (WL)w);
2565 3628
3629 /* common bug, apparently */
3630 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3631
2566 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3632 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2567 w->events &= ~EV__IOFDSET; 3633 w->events &= ~EV__IOFDSET;
2568 3634
2569 EV_FREQUENT_CHECK; 3635 EV_FREQUENT_CHECK;
2570} 3636}
2571 3637
2572void noinline 3638void noinline
2573ev_io_stop (EV_P_ ev_io *w) 3639ev_io_stop (EV_P_ ev_io *w) EV_THROW
2574{ 3640{
2575 clear_pending (EV_A_ (W)w); 3641 clear_pending (EV_A_ (W)w);
2576 if (expect_false (!ev_is_active (w))) 3642 if (expect_false (!ev_is_active (w)))
2577 return; 3643 return;
2578 3644
… …
2581 EV_FREQUENT_CHECK; 3647 EV_FREQUENT_CHECK;
2582 3648
2583 wlist_del (&anfds[w->fd].head, (WL)w); 3649 wlist_del (&anfds[w->fd].head, (WL)w);
2584 ev_stop (EV_A_ (W)w); 3650 ev_stop (EV_A_ (W)w);
2585 3651
2586 fd_change (EV_A_ w->fd, 1); 3652 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2587 3653
2588 EV_FREQUENT_CHECK; 3654 EV_FREQUENT_CHECK;
2589} 3655}
2590 3656
2591void noinline 3657void noinline
2592ev_timer_start (EV_P_ ev_timer *w) 3658ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2593{ 3659{
2594 if (expect_false (ev_is_active (w))) 3660 if (expect_false (ev_is_active (w)))
2595 return; 3661 return;
2596 3662
2597 ev_at (w) += mn_now; 3663 ev_at (w) += mn_now;
… …
2611 3677
2612 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3678 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2613} 3679}
2614 3680
2615void noinline 3681void noinline
2616ev_timer_stop (EV_P_ ev_timer *w) 3682ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2617{ 3683{
2618 clear_pending (EV_A_ (W)w); 3684 clear_pending (EV_A_ (W)w);
2619 if (expect_false (!ev_is_active (w))) 3685 if (expect_false (!ev_is_active (w)))
2620 return; 3686 return;
2621 3687
… …
2641 3707
2642 EV_FREQUENT_CHECK; 3708 EV_FREQUENT_CHECK;
2643} 3709}
2644 3710
2645void noinline 3711void noinline
2646ev_timer_again (EV_P_ ev_timer *w) 3712ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2647{ 3713{
2648 EV_FREQUENT_CHECK; 3714 EV_FREQUENT_CHECK;
3715
3716 clear_pending (EV_A_ (W)w);
2649 3717
2650 if (ev_is_active (w)) 3718 if (ev_is_active (w))
2651 { 3719 {
2652 if (w->repeat) 3720 if (w->repeat)
2653 { 3721 {
… …
2666 3734
2667 EV_FREQUENT_CHECK; 3735 EV_FREQUENT_CHECK;
2668} 3736}
2669 3737
2670ev_tstamp 3738ev_tstamp
2671ev_timer_remaining (EV_P_ ev_timer *w) 3739ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2672{ 3740{
2673 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3741 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2674} 3742}
2675 3743
2676#if EV_PERIODIC_ENABLE 3744#if EV_PERIODIC_ENABLE
2677void noinline 3745void noinline
2678ev_periodic_start (EV_P_ ev_periodic *w) 3746ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2679{ 3747{
2680 if (expect_false (ev_is_active (w))) 3748 if (expect_false (ev_is_active (w)))
2681 return; 3749 return;
2682 3750
2683 if (w->reschedule_cb) 3751 if (w->reschedule_cb)
2684 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3752 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2685 else if (w->interval) 3753 else if (w->interval)
2686 { 3754 {
2687 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3755 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2688 /* this formula differs from the one in periodic_reify because we do not always round up */ 3756 periodic_recalc (EV_A_ w);
2689 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2690 } 3757 }
2691 else 3758 else
2692 ev_at (w) = w->offset; 3759 ev_at (w) = w->offset;
2693 3760
2694 EV_FREQUENT_CHECK; 3761 EV_FREQUENT_CHECK;
… …
2704 3771
2705 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3772 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2706} 3773}
2707 3774
2708void noinline 3775void noinline
2709ev_periodic_stop (EV_P_ ev_periodic *w) 3776ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2710{ 3777{
2711 clear_pending (EV_A_ (W)w); 3778 clear_pending (EV_A_ (W)w);
2712 if (expect_false (!ev_is_active (w))) 3779 if (expect_false (!ev_is_active (w)))
2713 return; 3780 return;
2714 3781
… …
2732 3799
2733 EV_FREQUENT_CHECK; 3800 EV_FREQUENT_CHECK;
2734} 3801}
2735 3802
2736void noinline 3803void noinline
2737ev_periodic_again (EV_P_ ev_periodic *w) 3804ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2738{ 3805{
2739 /* TODO: use adjustheap and recalculation */ 3806 /* TODO: use adjustheap and recalculation */
2740 ev_periodic_stop (EV_A_ w); 3807 ev_periodic_stop (EV_A_ w);
2741 ev_periodic_start (EV_A_ w); 3808 ev_periodic_start (EV_A_ w);
2742} 3809}
… …
2747#endif 3814#endif
2748 3815
2749#if EV_SIGNAL_ENABLE 3816#if EV_SIGNAL_ENABLE
2750 3817
2751void noinline 3818void noinline
2752ev_signal_start (EV_P_ ev_signal *w) 3819ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2753{ 3820{
2754 if (expect_false (ev_is_active (w))) 3821 if (expect_false (ev_is_active (w)))
2755 return; 3822 return;
2756 3823
2757 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3824 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2759#if EV_MULTIPLICITY 3826#if EV_MULTIPLICITY
2760 assert (("libev: a signal must not be attached to two different loops", 3827 assert (("libev: a signal must not be attached to two different loops",
2761 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3828 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2762 3829
2763 signals [w->signum - 1].loop = EV_A; 3830 signals [w->signum - 1].loop = EV_A;
3831 ECB_MEMORY_FENCE_RELEASE;
2764#endif 3832#endif
2765 3833
2766 EV_FREQUENT_CHECK; 3834 EV_FREQUENT_CHECK;
2767 3835
2768#if EV_USE_SIGNALFD 3836#if EV_USE_SIGNALFD
… …
2815 sa.sa_handler = ev_sighandler; 3883 sa.sa_handler = ev_sighandler;
2816 sigfillset (&sa.sa_mask); 3884 sigfillset (&sa.sa_mask);
2817 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3885 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2818 sigaction (w->signum, &sa, 0); 3886 sigaction (w->signum, &sa, 0);
2819 3887
3888 if (origflags & EVFLAG_NOSIGMASK)
3889 {
2820 sigemptyset (&sa.sa_mask); 3890 sigemptyset (&sa.sa_mask);
2821 sigaddset (&sa.sa_mask, w->signum); 3891 sigaddset (&sa.sa_mask, w->signum);
2822 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3892 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3893 }
2823#endif 3894#endif
2824 } 3895 }
2825 3896
2826 EV_FREQUENT_CHECK; 3897 EV_FREQUENT_CHECK;
2827} 3898}
2828 3899
2829void noinline 3900void noinline
2830ev_signal_stop (EV_P_ ev_signal *w) 3901ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2831{ 3902{
2832 clear_pending (EV_A_ (W)w); 3903 clear_pending (EV_A_ (W)w);
2833 if (expect_false (!ev_is_active (w))) 3904 if (expect_false (!ev_is_active (w)))
2834 return; 3905 return;
2835 3906
… …
2866#endif 3937#endif
2867 3938
2868#if EV_CHILD_ENABLE 3939#if EV_CHILD_ENABLE
2869 3940
2870void 3941void
2871ev_child_start (EV_P_ ev_child *w) 3942ev_child_start (EV_P_ ev_child *w) EV_THROW
2872{ 3943{
2873#if EV_MULTIPLICITY 3944#if EV_MULTIPLICITY
2874 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3945 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2875#endif 3946#endif
2876 if (expect_false (ev_is_active (w))) 3947 if (expect_false (ev_is_active (w)))
2877 return; 3948 return;
2878 3949
2879 EV_FREQUENT_CHECK; 3950 EV_FREQUENT_CHECK;
2880 3951
2881 ev_start (EV_A_ (W)w, 1); 3952 ev_start (EV_A_ (W)w, 1);
2882 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3953 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2883 3954
2884 EV_FREQUENT_CHECK; 3955 EV_FREQUENT_CHECK;
2885} 3956}
2886 3957
2887void 3958void
2888ev_child_stop (EV_P_ ev_child *w) 3959ev_child_stop (EV_P_ ev_child *w) EV_THROW
2889{ 3960{
2890 clear_pending (EV_A_ (W)w); 3961 clear_pending (EV_A_ (W)w);
2891 if (expect_false (!ev_is_active (w))) 3962 if (expect_false (!ev_is_active (w)))
2892 return; 3963 return;
2893 3964
2894 EV_FREQUENT_CHECK; 3965 EV_FREQUENT_CHECK;
2895 3966
2896 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3967 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2897 ev_stop (EV_A_ (W)w); 3968 ev_stop (EV_A_ (W)w);
2898 3969
2899 EV_FREQUENT_CHECK; 3970 EV_FREQUENT_CHECK;
2900} 3971}
2901 3972
… …
2920# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3991# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2921 3992
2922static void noinline 3993static void noinline
2923infy_add (EV_P_ ev_stat *w) 3994infy_add (EV_P_ ev_stat *w)
2924{ 3995{
2925 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3996 w->wd = inotify_add_watch (fs_fd, w->path,
3997 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3998 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3999 | IN_DONT_FOLLOW | IN_MASK_ADD);
2926 4000
2927 if (w->wd >= 0) 4001 if (w->wd >= 0)
2928 { 4002 {
2929 struct statfs sfs; 4003 struct statfs sfs;
2930 4004
… …
2934 4008
2935 if (!fs_2625) 4009 if (!fs_2625)
2936 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4010 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2937 else if (!statfs (w->path, &sfs) 4011 else if (!statfs (w->path, &sfs)
2938 && (sfs.f_type == 0x1373 /* devfs */ 4012 && (sfs.f_type == 0x1373 /* devfs */
4013 || sfs.f_type == 0x4006 /* fat */
4014 || sfs.f_type == 0x4d44 /* msdos */
2939 || sfs.f_type == 0xEF53 /* ext2/3 */ 4015 || sfs.f_type == 0xEF53 /* ext2/3 */
4016 || sfs.f_type == 0x72b6 /* jffs2 */
4017 || sfs.f_type == 0x858458f6 /* ramfs */
4018 || sfs.f_type == 0x5346544e /* ntfs */
2940 || sfs.f_type == 0x3153464a /* jfs */ 4019 || sfs.f_type == 0x3153464a /* jfs */
4020 || sfs.f_type == 0x9123683e /* btrfs */
2941 || sfs.f_type == 0x52654973 /* reiser3 */ 4021 || sfs.f_type == 0x52654973 /* reiser3 */
2942 || sfs.f_type == 0x01021994 /* tempfs */ 4022 || sfs.f_type == 0x01021994 /* tmpfs */
2943 || sfs.f_type == 0x58465342 /* xfs */)) 4023 || sfs.f_type == 0x58465342 /* xfs */))
2944 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4024 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2945 else 4025 else
2946 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4026 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2947 } 4027 }
… …
2968 if (!pend || pend == path) 4048 if (!pend || pend == path)
2969 break; 4049 break;
2970 4050
2971 *pend = 0; 4051 *pend = 0;
2972 w->wd = inotify_add_watch (fs_fd, path, mask); 4052 w->wd = inotify_add_watch (fs_fd, path, mask);
2973 } 4053 }
2974 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4054 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2975 } 4055 }
2976 } 4056 }
2977 4057
2978 if (w->wd >= 0) 4058 if (w->wd >= 0)
2979 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4059 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2980 4060
2981 /* now re-arm timer, if required */ 4061 /* now re-arm timer, if required */
2982 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4062 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2983 ev_timer_again (EV_A_ &w->timer); 4063 ev_timer_again (EV_A_ &w->timer);
2984 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4064 if (ev_is_active (&w->timer)) ev_unref (EV_A);
… …
2992 4072
2993 if (wd < 0) 4073 if (wd < 0)
2994 return; 4074 return;
2995 4075
2996 w->wd = -2; 4076 w->wd = -2;
2997 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4077 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2998 wlist_del (&fs_hash [slot].head, (WL)w); 4078 wlist_del (&fs_hash [slot].head, (WL)w);
2999 4079
3000 /* remove this watcher, if others are watching it, they will rearm */ 4080 /* remove this watcher, if others are watching it, they will rearm */
3001 inotify_rm_watch (fs_fd, wd); 4081 inotify_rm_watch (fs_fd, wd);
3002} 4082}
… …
3004static void noinline 4084static void noinline
3005infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4085infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3006{ 4086{
3007 if (slot < 0) 4087 if (slot < 0)
3008 /* overflow, need to check for all hash slots */ 4088 /* overflow, need to check for all hash slots */
3009 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4089 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3010 infy_wd (EV_A_ slot, wd, ev); 4090 infy_wd (EV_A_ slot, wd, ev);
3011 else 4091 else
3012 { 4092 {
3013 WL w_; 4093 WL w_;
3014 4094
3015 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4095 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
3016 { 4096 {
3017 ev_stat *w = (ev_stat *)w_; 4097 ev_stat *w = (ev_stat *)w_;
3018 w_ = w_->next; /* lets us remove this watcher and all before it */ 4098 w_ = w_->next; /* lets us remove this watcher and all before it */
3019 4099
3020 if (w->wd == wd || wd == -1) 4100 if (w->wd == wd || wd == -1)
3021 { 4101 {
3022 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4102 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
3023 { 4103 {
3024 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4104 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3025 w->wd = -1; 4105 w->wd = -1;
3026 infy_add (EV_A_ w); /* re-add, no matter what */ 4106 infy_add (EV_A_ w); /* re-add, no matter what */
3027 } 4107 }
3028 4108
3029 stat_timer_cb (EV_A_ &w->timer, 0); 4109 stat_timer_cb (EV_A_ &w->timer, 0);
… …
3045 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4125 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3046 ofs += sizeof (struct inotify_event) + ev->len; 4126 ofs += sizeof (struct inotify_event) + ev->len;
3047 } 4127 }
3048} 4128}
3049 4129
3050inline_size unsigned int
3051ev_linux_version (void)
3052{
3053 struct utsname buf;
3054 unsigned int v;
3055 int i;
3056 char *p = buf.release;
3057
3058 if (uname (&buf))
3059 return 0;
3060
3061 for (i = 3+1; --i; )
3062 {
3063 unsigned int c = 0;
3064
3065 for (;;)
3066 {
3067 if (*p >= '0' && *p <= '9')
3068 c = c * 10 + *p++ - '0';
3069 else
3070 {
3071 p += *p == '.';
3072 break;
3073 }
3074 }
3075
3076 v = (v << 8) | c;
3077 }
3078
3079 return v;
3080}
3081
3082inline_size void 4130inline_size void ecb_cold
3083ev_check_2625 (EV_P) 4131ev_check_2625 (EV_P)
3084{ 4132{
3085 /* kernels < 2.6.25 are borked 4133 /* kernels < 2.6.25 are borked
3086 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4134 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3087 */ 4135 */
… …
3092} 4140}
3093 4141
3094inline_size int 4142inline_size int
3095infy_newfd (void) 4143infy_newfd (void)
3096{ 4144{
3097#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4145#if defined IN_CLOEXEC && defined IN_NONBLOCK
3098 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4146 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3099 if (fd >= 0) 4147 if (fd >= 0)
3100 return fd; 4148 return fd;
3101#endif 4149#endif
3102 return inotify_init (); 4150 return inotify_init ();
… …
3143 ev_io_set (&fs_w, fs_fd, EV_READ); 4191 ev_io_set (&fs_w, fs_fd, EV_READ);
3144 ev_io_start (EV_A_ &fs_w); 4192 ev_io_start (EV_A_ &fs_w);
3145 ev_unref (EV_A); 4193 ev_unref (EV_A);
3146 } 4194 }
3147 4195
3148 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4196 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3149 { 4197 {
3150 WL w_ = fs_hash [slot].head; 4198 WL w_ = fs_hash [slot].head;
3151 fs_hash [slot].head = 0; 4199 fs_hash [slot].head = 0;
3152 4200
3153 while (w_) 4201 while (w_)
… …
3177#else 4225#else
3178# define EV_LSTAT(p,b) lstat (p, b) 4226# define EV_LSTAT(p,b) lstat (p, b)
3179#endif 4227#endif
3180 4228
3181void 4229void
3182ev_stat_stat (EV_P_ ev_stat *w) 4230ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3183{ 4231{
3184 if (lstat (w->path, &w->attr) < 0) 4232 if (lstat (w->path, &w->attr) < 0)
3185 w->attr.st_nlink = 0; 4233 w->attr.st_nlink = 0;
3186 else if (!w->attr.st_nlink) 4234 else if (!w->attr.st_nlink)
3187 w->attr.st_nlink = 1; 4235 w->attr.st_nlink = 1;
… …
3226 ev_feed_event (EV_A_ w, EV_STAT); 4274 ev_feed_event (EV_A_ w, EV_STAT);
3227 } 4275 }
3228} 4276}
3229 4277
3230void 4278void
3231ev_stat_start (EV_P_ ev_stat *w) 4279ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3232{ 4280{
3233 if (expect_false (ev_is_active (w))) 4281 if (expect_false (ev_is_active (w)))
3234 return; 4282 return;
3235 4283
3236 ev_stat_stat (EV_A_ w); 4284 ev_stat_stat (EV_A_ w);
… …
3257 4305
3258 EV_FREQUENT_CHECK; 4306 EV_FREQUENT_CHECK;
3259} 4307}
3260 4308
3261void 4309void
3262ev_stat_stop (EV_P_ ev_stat *w) 4310ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3263{ 4311{
3264 clear_pending (EV_A_ (W)w); 4312 clear_pending (EV_A_ (W)w);
3265 if (expect_false (!ev_is_active (w))) 4313 if (expect_false (!ev_is_active (w)))
3266 return; 4314 return;
3267 4315
… …
3283} 4331}
3284#endif 4332#endif
3285 4333
3286#if EV_IDLE_ENABLE 4334#if EV_IDLE_ENABLE
3287void 4335void
3288ev_idle_start (EV_P_ ev_idle *w) 4336ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3289{ 4337{
3290 if (expect_false (ev_is_active (w))) 4338 if (expect_false (ev_is_active (w)))
3291 return; 4339 return;
3292 4340
3293 pri_adjust (EV_A_ (W)w); 4341 pri_adjust (EV_A_ (W)w);
… …
3306 4354
3307 EV_FREQUENT_CHECK; 4355 EV_FREQUENT_CHECK;
3308} 4356}
3309 4357
3310void 4358void
3311ev_idle_stop (EV_P_ ev_idle *w) 4359ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3312{ 4360{
3313 clear_pending (EV_A_ (W)w); 4361 clear_pending (EV_A_ (W)w);
3314 if (expect_false (!ev_is_active (w))) 4362 if (expect_false (!ev_is_active (w)))
3315 return; 4363 return;
3316 4364
… …
3330} 4378}
3331#endif 4379#endif
3332 4380
3333#if EV_PREPARE_ENABLE 4381#if EV_PREPARE_ENABLE
3334void 4382void
3335ev_prepare_start (EV_P_ ev_prepare *w) 4383ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3336{ 4384{
3337 if (expect_false (ev_is_active (w))) 4385 if (expect_false (ev_is_active (w)))
3338 return; 4386 return;
3339 4387
3340 EV_FREQUENT_CHECK; 4388 EV_FREQUENT_CHECK;
… …
3345 4393
3346 EV_FREQUENT_CHECK; 4394 EV_FREQUENT_CHECK;
3347} 4395}
3348 4396
3349void 4397void
3350ev_prepare_stop (EV_P_ ev_prepare *w) 4398ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3351{ 4399{
3352 clear_pending (EV_A_ (W)w); 4400 clear_pending (EV_A_ (W)w);
3353 if (expect_false (!ev_is_active (w))) 4401 if (expect_false (!ev_is_active (w)))
3354 return; 4402 return;
3355 4403
… …
3368} 4416}
3369#endif 4417#endif
3370 4418
3371#if EV_CHECK_ENABLE 4419#if EV_CHECK_ENABLE
3372void 4420void
3373ev_check_start (EV_P_ ev_check *w) 4421ev_check_start (EV_P_ ev_check *w) EV_THROW
3374{ 4422{
3375 if (expect_false (ev_is_active (w))) 4423 if (expect_false (ev_is_active (w)))
3376 return; 4424 return;
3377 4425
3378 EV_FREQUENT_CHECK; 4426 EV_FREQUENT_CHECK;
… …
3383 4431
3384 EV_FREQUENT_CHECK; 4432 EV_FREQUENT_CHECK;
3385} 4433}
3386 4434
3387void 4435void
3388ev_check_stop (EV_P_ ev_check *w) 4436ev_check_stop (EV_P_ ev_check *w) EV_THROW
3389{ 4437{
3390 clear_pending (EV_A_ (W)w); 4438 clear_pending (EV_A_ (W)w);
3391 if (expect_false (!ev_is_active (w))) 4439 if (expect_false (!ev_is_active (w)))
3392 return; 4440 return;
3393 4441
… …
3406} 4454}
3407#endif 4455#endif
3408 4456
3409#if EV_EMBED_ENABLE 4457#if EV_EMBED_ENABLE
3410void noinline 4458void noinline
3411ev_embed_sweep (EV_P_ ev_embed *w) 4459ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3412{ 4460{
3413 ev_loop (w->other, EVLOOP_NONBLOCK); 4461 ev_run (w->other, EVRUN_NOWAIT);
3414} 4462}
3415 4463
3416static void 4464static void
3417embed_io_cb (EV_P_ ev_io *io, int revents) 4465embed_io_cb (EV_P_ ev_io *io, int revents)
3418{ 4466{
3419 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4467 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3420 4468
3421 if (ev_cb (w)) 4469 if (ev_cb (w))
3422 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4470 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3423 else 4471 else
3424 ev_loop (w->other, EVLOOP_NONBLOCK); 4472 ev_run (w->other, EVRUN_NOWAIT);
3425} 4473}
3426 4474
3427static void 4475static void
3428embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4476embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3429{ 4477{
… …
3433 EV_P = w->other; 4481 EV_P = w->other;
3434 4482
3435 while (fdchangecnt) 4483 while (fdchangecnt)
3436 { 4484 {
3437 fd_reify (EV_A); 4485 fd_reify (EV_A);
3438 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4486 ev_run (EV_A_ EVRUN_NOWAIT);
3439 } 4487 }
3440 } 4488 }
3441} 4489}
3442 4490
3443static void 4491static void
… …
3449 4497
3450 { 4498 {
3451 EV_P = w->other; 4499 EV_P = w->other;
3452 4500
3453 ev_loop_fork (EV_A); 4501 ev_loop_fork (EV_A);
3454 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4502 ev_run (EV_A_ EVRUN_NOWAIT);
3455 } 4503 }
3456 4504
3457 ev_embed_start (EV_A_ w); 4505 ev_embed_start (EV_A_ w);
3458} 4506}
3459 4507
… …
3464 ev_idle_stop (EV_A_ idle); 4512 ev_idle_stop (EV_A_ idle);
3465} 4513}
3466#endif 4514#endif
3467 4515
3468void 4516void
3469ev_embed_start (EV_P_ ev_embed *w) 4517ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3470{ 4518{
3471 if (expect_false (ev_is_active (w))) 4519 if (expect_false (ev_is_active (w)))
3472 return; 4520 return;
3473 4521
3474 { 4522 {
… …
3495 4543
3496 EV_FREQUENT_CHECK; 4544 EV_FREQUENT_CHECK;
3497} 4545}
3498 4546
3499void 4547void
3500ev_embed_stop (EV_P_ ev_embed *w) 4548ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3501{ 4549{
3502 clear_pending (EV_A_ (W)w); 4550 clear_pending (EV_A_ (W)w);
3503 if (expect_false (!ev_is_active (w))) 4551 if (expect_false (!ev_is_active (w)))
3504 return; 4552 return;
3505 4553
… …
3515} 4563}
3516#endif 4564#endif
3517 4565
3518#if EV_FORK_ENABLE 4566#if EV_FORK_ENABLE
3519void 4567void
3520ev_fork_start (EV_P_ ev_fork *w) 4568ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3521{ 4569{
3522 if (expect_false (ev_is_active (w))) 4570 if (expect_false (ev_is_active (w)))
3523 return; 4571 return;
3524 4572
3525 EV_FREQUENT_CHECK; 4573 EV_FREQUENT_CHECK;
… …
3530 4578
3531 EV_FREQUENT_CHECK; 4579 EV_FREQUENT_CHECK;
3532} 4580}
3533 4581
3534void 4582void
3535ev_fork_stop (EV_P_ ev_fork *w) 4583ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3536{ 4584{
3537 clear_pending (EV_A_ (W)w); 4585 clear_pending (EV_A_ (W)w);
3538 if (expect_false (!ev_is_active (w))) 4586 if (expect_false (!ev_is_active (w)))
3539 return; 4587 return;
3540 4588
… …
3551 4599
3552 EV_FREQUENT_CHECK; 4600 EV_FREQUENT_CHECK;
3553} 4601}
3554#endif 4602#endif
3555 4603
4604#if EV_CLEANUP_ENABLE
4605void
4606ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4607{
4608 if (expect_false (ev_is_active (w)))
4609 return;
4610
4611 EV_FREQUENT_CHECK;
4612
4613 ev_start (EV_A_ (W)w, ++cleanupcnt);
4614 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4615 cleanups [cleanupcnt - 1] = w;
4616
4617 /* cleanup watchers should never keep a refcount on the loop */
4618 ev_unref (EV_A);
4619 EV_FREQUENT_CHECK;
4620}
4621
4622void
4623ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4624{
4625 clear_pending (EV_A_ (W)w);
4626 if (expect_false (!ev_is_active (w)))
4627 return;
4628
4629 EV_FREQUENT_CHECK;
4630 ev_ref (EV_A);
4631
4632 {
4633 int active = ev_active (w);
4634
4635 cleanups [active - 1] = cleanups [--cleanupcnt];
4636 ev_active (cleanups [active - 1]) = active;
4637 }
4638
4639 ev_stop (EV_A_ (W)w);
4640
4641 EV_FREQUENT_CHECK;
4642}
4643#endif
4644
3556#if EV_ASYNC_ENABLE 4645#if EV_ASYNC_ENABLE
3557void 4646void
3558ev_async_start (EV_P_ ev_async *w) 4647ev_async_start (EV_P_ ev_async *w) EV_THROW
3559{ 4648{
3560 if (expect_false (ev_is_active (w))) 4649 if (expect_false (ev_is_active (w)))
3561 return; 4650 return;
4651
4652 w->sent = 0;
3562 4653
3563 evpipe_init (EV_A); 4654 evpipe_init (EV_A);
3564 4655
3565 EV_FREQUENT_CHECK; 4656 EV_FREQUENT_CHECK;
3566 4657
… …
3570 4661
3571 EV_FREQUENT_CHECK; 4662 EV_FREQUENT_CHECK;
3572} 4663}
3573 4664
3574void 4665void
3575ev_async_stop (EV_P_ ev_async *w) 4666ev_async_stop (EV_P_ ev_async *w) EV_THROW
3576{ 4667{
3577 clear_pending (EV_A_ (W)w); 4668 clear_pending (EV_A_ (W)w);
3578 if (expect_false (!ev_is_active (w))) 4669 if (expect_false (!ev_is_active (w)))
3579 return; 4670 return;
3580 4671
… …
3591 4682
3592 EV_FREQUENT_CHECK; 4683 EV_FREQUENT_CHECK;
3593} 4684}
3594 4685
3595void 4686void
3596ev_async_send (EV_P_ ev_async *w) 4687ev_async_send (EV_P_ ev_async *w) EV_THROW
3597{ 4688{
3598 w->sent = 1; 4689 w->sent = 1;
3599 evpipe_write (EV_A_ &async_pending); 4690 evpipe_write (EV_A_ &async_pending);
3600} 4691}
3601#endif 4692#endif
… …
3638 4729
3639 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4730 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3640} 4731}
3641 4732
3642void 4733void
3643ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4734ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3644{ 4735{
3645 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4736 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3646 4737
3647 if (expect_false (!once)) 4738 if (expect_false (!once))
3648 { 4739 {
3649 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4740 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3650 return; 4741 return;
3651 } 4742 }
3652 4743
3653 once->cb = cb; 4744 once->cb = cb;
3654 once->arg = arg; 4745 once->arg = arg;
… …
3669} 4760}
3670 4761
3671/*****************************************************************************/ 4762/*****************************************************************************/
3672 4763
3673#if EV_WALK_ENABLE 4764#if EV_WALK_ENABLE
3674void 4765void ecb_cold
3675ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4766ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3676{ 4767{
3677 int i, j; 4768 int i, j;
3678 ev_watcher_list *wl, *wn; 4769 ev_watcher_list *wl, *wn;
3679 4770
3680 if (types & (EV_IO | EV_EMBED)) 4771 if (types & (EV_IO | EV_EMBED))
… …
3723 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4814 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3724#endif 4815#endif
3725 4816
3726#if EV_IDLE_ENABLE 4817#if EV_IDLE_ENABLE
3727 if (types & EV_IDLE) 4818 if (types & EV_IDLE)
3728 for (j = NUMPRI; i--; ) 4819 for (j = NUMPRI; j--; )
3729 for (i = idlecnt [j]; i--; ) 4820 for (i = idlecnt [j]; i--; )
3730 cb (EV_A_ EV_IDLE, idles [j][i]); 4821 cb (EV_A_ EV_IDLE, idles [j][i]);
3731#endif 4822#endif
3732 4823
3733#if EV_FORK_ENABLE 4824#if EV_FORK_ENABLE
… …
3769 } 4860 }
3770#endif 4861#endif
3771 4862
3772#if EV_CHILD_ENABLE 4863#if EV_CHILD_ENABLE
3773 if (types & EV_CHILD) 4864 if (types & EV_CHILD)
3774 for (i = EV_PID_HASHSIZE; i--; ) 4865 for (i = (EV_PID_HASHSIZE); i--; )
3775 for (wl = childs [i]; wl; ) 4866 for (wl = childs [i]; wl; )
3776 { 4867 {
3777 wn = wl->next; 4868 wn = wl->next;
3778 cb (EV_A_ EV_CHILD, wl); 4869 cb (EV_A_ EV_CHILD, wl);
3779 wl = wn; 4870 wl = wn;
… …
3786 4877
3787#if EV_MULTIPLICITY 4878#if EV_MULTIPLICITY
3788 #include "ev_wrap.h" 4879 #include "ev_wrap.h"
3789#endif 4880#endif
3790 4881
3791#ifdef __cplusplus
3792}
3793#endif
3794

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