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Comparing libev/ev.c (file contents):
Revision 1.336 by root, Wed Mar 10 08:19:38 2010 UTC vs.
Revision 1.455 by root, Sun Apr 28 12:45:20 2013 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
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# error "unable to find value for NSIG, please report"
217/* to make it compile regardless, just remove the above line, */ 247/* to make it compile regardless, just remove the above line, */
218/* but consider reporting it, too! :) */ 248/* but consider reporting it, too! :) */
219# define EV_NSIG 65 249# define EV_NSIG 65
220#endif 250#endif
221 251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
255
222#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
223# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
224# define EV_USE_CLOCK_SYSCALL 1 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
225# else 259# else
226# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
227# endif 261# endif
228#endif 262#endif
229 263
230#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
231# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
232# define EV_USE_MONOTONIC 1 266# define EV_USE_MONOTONIC EV_FEATURE_OS
233# else 267# else
234# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
235# endif 269# endif
236#endif 270#endif
237 271
… …
239# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
240#endif 274#endif
241 275
242#ifndef EV_USE_NANOSLEEP 276#ifndef EV_USE_NANOSLEEP
243# if _POSIX_C_SOURCE >= 199309L 277# if _POSIX_C_SOURCE >= 199309L
244# define EV_USE_NANOSLEEP 1 278# define EV_USE_NANOSLEEP EV_FEATURE_OS
245# else 279# else
246# define EV_USE_NANOSLEEP 0 280# define EV_USE_NANOSLEEP 0
247# endif 281# endif
248#endif 282#endif
249 283
250#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
251# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
252#endif 286#endif
253 287
254#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
255# ifdef _WIN32 289# ifdef _WIN32
256# define EV_USE_POLL 0 290# define EV_USE_POLL 0
257# else 291# else
258# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
259# endif 293# endif
260#endif 294#endif
261 295
262#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
263# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
264# define EV_USE_EPOLL 1 298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
265# else 299# else
266# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
267# endif 301# endif
268#endif 302#endif
269 303
… …
275# define EV_USE_PORT 0 309# define EV_USE_PORT 0
276#endif 310#endif
277 311
278#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
279# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
280# define EV_USE_INOTIFY 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
281# else 315# else
282# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
283# endif 317# endif
284#endif 318#endif
285 319
286#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
287# if EV_MINIMAL 321# 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 322#endif
293 323
294#ifndef EV_INOTIFY_HASHSIZE 324#ifndef EV_INOTIFY_HASHSIZE
295# if EV_MINIMAL 325# 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 326#endif
301 327
302#ifndef EV_USE_EVENTFD 328#ifndef EV_USE_EVENTFD
303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
304# define EV_USE_EVENTFD 1 330# define EV_USE_EVENTFD EV_FEATURE_OS
305# else 331# else
306# define EV_USE_EVENTFD 0 332# define EV_USE_EVENTFD 0
307# endif 333# endif
308#endif 334#endif
309 335
310#ifndef EV_USE_SIGNALFD 336#ifndef EV_USE_SIGNALFD
311# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
312# define EV_USE_SIGNALFD 1 338# define EV_USE_SIGNALFD EV_FEATURE_OS
313# else 339# else
314# define EV_USE_SIGNALFD 0 340# define EV_USE_SIGNALFD 0
315# endif 341# endif
316#endif 342#endif
317 343
… …
320# define EV_USE_4HEAP 1 346# define EV_USE_4HEAP 1
321# define EV_HEAP_CACHE_AT 1 347# define EV_HEAP_CACHE_AT 1
322#endif 348#endif
323 349
324#ifndef EV_VERIFY 350#ifndef EV_VERIFY
325# define EV_VERIFY !EV_MINIMAL 351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
326#endif 352#endif
327 353
328#ifndef EV_USE_4HEAP 354#ifndef EV_USE_4HEAP
329# define EV_USE_4HEAP !EV_MINIMAL 355# define EV_USE_4HEAP EV_FEATURE_DATA
330#endif 356#endif
331 357
332#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
333# define EV_HEAP_CACHE_AT !EV_MINIMAL 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
360#endif
361
362#ifdef ANDROID
363/* supposedly, android doesn't typedef fd_mask */
364# undef EV_USE_SELECT
365# define EV_USE_SELECT 0
366/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
367# undef EV_USE_CLOCK_SYSCALL
368# define EV_USE_CLOCK_SYSCALL 0
369#endif
370
371/* aix's poll.h seems to cause lots of trouble */
372#ifdef _AIX
373/* AIX has a completely broken poll.h header */
374# undef EV_USE_POLL
375# define EV_USE_POLL 0
334#endif 376#endif
335 377
336/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 378/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
337/* which makes programs even slower. might work on other unices, too. */ 379/* which makes programs even slower. might work on other unices, too. */
338#if EV_USE_CLOCK_SYSCALL 380#if EV_USE_CLOCK_SYSCALL
339# include <syscall.h> 381# include <sys/syscall.h>
340# ifdef SYS_clock_gettime 382# ifdef SYS_clock_gettime
341# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 383# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
342# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
343# define EV_USE_MONOTONIC 1 385# define EV_USE_MONOTONIC 1
344# else 386# else
… …
347# endif 389# endif
348#endif 390#endif
349 391
350/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 392/* this block fixes any misconfiguration where we know we run into trouble otherwise */
351 393
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 394#ifndef CLOCK_MONOTONIC
359# undef EV_USE_MONOTONIC 395# undef EV_USE_MONOTONIC
360# define EV_USE_MONOTONIC 0 396# define EV_USE_MONOTONIC 0
361#endif 397#endif
362 398
… …
369# undef EV_USE_INOTIFY 405# undef EV_USE_INOTIFY
370# define EV_USE_INOTIFY 0 406# define EV_USE_INOTIFY 0
371#endif 407#endif
372 408
373#if !EV_USE_NANOSLEEP 409#if !EV_USE_NANOSLEEP
374# ifndef _WIN32 410/* hp-ux has it in sys/time.h, which we unconditionally include above */
411# if !defined _WIN32 && !defined __hpux
375# include <sys/select.h> 412# include <sys/select.h>
376# endif 413# endif
377#endif 414#endif
378 415
379#if EV_USE_INOTIFY 416#if EV_USE_INOTIFY
380# include <sys/utsname.h>
381# include <sys/statfs.h> 417# include <sys/statfs.h>
382# include <sys/inotify.h> 418# include <sys/inotify.h>
383/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 419/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
384# ifndef IN_DONT_FOLLOW 420# ifndef IN_DONT_FOLLOW
385# undef EV_USE_INOTIFY 421# undef EV_USE_INOTIFY
386# define EV_USE_INOTIFY 0 422# define EV_USE_INOTIFY 0
387# endif 423# endif
388#endif
389
390#if EV_SELECT_IS_WINSOCKET
391# include <winsock.h>
392#endif 424#endif
393 425
394#if EV_USE_EVENTFD 426#if EV_USE_EVENTFD
395/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
396# include <stdint.h> 428# include <stdint.h>
… …
402# define EFD_CLOEXEC O_CLOEXEC 434# define EFD_CLOEXEC O_CLOEXEC
403# else 435# else
404# define EFD_CLOEXEC 02000000 436# define EFD_CLOEXEC 02000000
405# endif 437# endif
406# endif 438# endif
407# ifdef __cplusplus
408extern "C" {
409# endif
410int (eventfd) (unsigned int initval, int flags); 439EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
411# ifdef __cplusplus
412}
413# endif
414#endif 440#endif
415 441
416#if EV_USE_SIGNALFD 442#if EV_USE_SIGNALFD
417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 443/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
418# include <stdint.h> 444# include <stdint.h>
… …
424# define SFD_CLOEXEC O_CLOEXEC 450# define SFD_CLOEXEC O_CLOEXEC
425# else 451# else
426# define SFD_CLOEXEC 02000000 452# define SFD_CLOEXEC 02000000
427# endif 453# endif
428# endif 454# endif
429# ifdef __cplusplus
430extern "C" {
431# endif
432int signalfd (int fd, const sigset_t *mask, int flags); 455EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
433 456
434struct signalfd_siginfo 457struct signalfd_siginfo
435{ 458{
436 uint32_t ssi_signo; 459 uint32_t ssi_signo;
437 char pad[128 - sizeof (uint32_t)]; 460 char pad[128 - sizeof (uint32_t)];
438}; 461};
439# ifdef __cplusplus
440}
441# endif 462#endif
442#endif
443
444 463
445/**/ 464/**/
446 465
447#if EV_VERIFY >= 3 466#if EV_VERIFY >= 3
448# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 467# define EV_FREQUENT_CHECK ev_verify (EV_A)
449#else 468#else
450# define EV_FREQUENT_CHECK do { } while (0) 469# define EV_FREQUENT_CHECK do { } while (0)
451#endif 470#endif
452 471
453/* 472/*
454 * This is used to avoid floating point rounding problems. 473 * 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. 474 * This value is good at least till the year 4000.
459 * Better solutions welcome.
460 */ 475 */
461#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 476#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
477/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
462 478
463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 479#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 480#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
465 481
482#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
483#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
484
485/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
486/* ECB.H BEGIN */
487/*
488 * libecb - http://software.schmorp.de/pkg/libecb
489 *
490 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
491 * Copyright (©) 2011 Emanuele Giaquinta
492 * All rights reserved.
493 *
494 * Redistribution and use in source and binary forms, with or without modifica-
495 * tion, are permitted provided that the following conditions are met:
496 *
497 * 1. Redistributions of source code must retain the above copyright notice,
498 * this list of conditions and the following disclaimer.
499 *
500 * 2. Redistributions in binary form must reproduce the above copyright
501 * notice, this list of conditions and the following disclaimer in the
502 * documentation and/or other materials provided with the distribution.
503 *
504 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
505 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
506 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
507 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
508 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
509 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
510 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
511 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
512 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
513 * OF THE POSSIBILITY OF SUCH DAMAGE.
514 */
515
516#ifndef ECB_H
517#define ECB_H
518
519/* 16 bits major, 16 bits minor */
520#define ECB_VERSION 0x00010003
521
522#ifdef _WIN32
523 typedef signed char int8_t;
524 typedef unsigned char uint8_t;
525 typedef signed short int16_t;
526 typedef unsigned short uint16_t;
527 typedef signed int int32_t;
528 typedef unsigned int uint32_t;
466#if __GNUC__ >= 4 529 #if __GNUC__
467# define expect(expr,value) __builtin_expect ((expr),(value)) 530 typedef signed long long int64_t;
468# define noinline __attribute__ ((noinline)) 531 typedef unsigned long long uint64_t;
532 #else /* _MSC_VER || __BORLANDC__ */
533 typedef signed __int64 int64_t;
534 typedef unsigned __int64 uint64_t;
535 #endif
536 #ifdef _WIN64
537 #define ECB_PTRSIZE 8
538 typedef uint64_t uintptr_t;
539 typedef int64_t intptr_t;
540 #else
541 #define ECB_PTRSIZE 4
542 typedef uint32_t uintptr_t;
543 typedef int32_t intptr_t;
544 #endif
469#else 545#else
470# define expect(expr,value) (expr) 546 #include <inttypes.h>
471# define noinline 547 #if UINTMAX_MAX > 0xffffffffU
472# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 548 #define ECB_PTRSIZE 8
473# define inline 549 #else
550 #define ECB_PTRSIZE 4
551 #endif
474# endif 552#endif
553
554/* work around x32 idiocy by defining proper macros */
555#if __x86_64 || _M_AMD64
556 #if __ILP32
557 #define ECB_AMD64_X32 1
558 #else
559 #define ECB_AMD64 1
475#endif 560 #endif
561#endif
476 562
563/* many compilers define _GNUC_ to some versions but then only implement
564 * what their idiot authors think are the "more important" extensions,
565 * causing enormous grief in return for some better fake benchmark numbers.
566 * or so.
567 * we try to detect these and simply assume they are not gcc - if they have
568 * an issue with that they should have done it right in the first place.
569 */
570#ifndef ECB_GCC_VERSION
571 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
572 #define ECB_GCC_VERSION(major,minor) 0
573 #else
574 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
575 #endif
576#endif
577
578#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
579#define ECB_C99 (__STDC_VERSION__ >= 199901L)
580#define ECB_C11 (__STDC_VERSION__ >= 201112L)
581#define ECB_CPP (__cplusplus+0)
582#define ECB_CPP11 (__cplusplus >= 201103L)
583
584#if ECB_CPP
585 #define ECB_EXTERN_C extern "C"
586 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
587 #define ECB_EXTERN_C_END }
588#else
589 #define ECB_EXTERN_C extern
590 #define ECB_EXTERN_C_BEG
591 #define ECB_EXTERN_C_END
592#endif
593
594/*****************************************************************************/
595
596/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
597/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
598
599#if ECB_NO_THREADS
600 #define ECB_NO_SMP 1
601#endif
602
603#if ECB_NO_SMP
604 #define ECB_MEMORY_FENCE do { } while (0)
605#endif
606
607#ifndef ECB_MEMORY_FENCE
608 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
609 #if __i386 || __i386__
610 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
611 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
612 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
613 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
614 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
615 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
616 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
617 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
618 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
619 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
620 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
622 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
623 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
624 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
625 #elif __sparc || __sparc__
626 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
627 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
629 #elif defined __s390__ || defined __s390x__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
631 #elif defined __mips__
632 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
633 #elif defined __alpha__
634 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
635 #elif defined __hppa__
636 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
637 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
638 #elif defined __ia64__
639 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
640 #endif
641 #endif
642#endif
643
644#ifndef ECB_MEMORY_FENCE
645 #if ECB_GCC_VERSION(4,7)
646 /* see comment below (stdatomic.h) about the C11 memory model. */
647 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
648
649 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
650 * without risking compile time errors with other compilers. We *could*
651 * define our own ecb_clang_has_feature, but I just can't be bothered to work
652 * around this shit time and again.
653 * #elif defined __clang && __has_feature (cxx_atomic)
654 * // see comment below (stdatomic.h) about the C11 memory model.
655 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
656 */
657
658 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
659 #define ECB_MEMORY_FENCE __sync_synchronize ()
660 #elif _MSC_VER >= 1400 /* VC++ 2005 */
661 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
662 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
663 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
664 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
665 #elif defined _WIN32
666 #include <WinNT.h>
667 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
668 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
669 #include <mbarrier.h>
670 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
671 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
672 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
673 #elif __xlC__
674 #define ECB_MEMORY_FENCE __sync ()
675 #endif
676#endif
677
678#ifndef ECB_MEMORY_FENCE
679 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
680 /* we assume that these memory fences work on all variables/all memory accesses, */
681 /* not just C11 atomics and atomic accesses */
682 #include <stdatomic.h>
683 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
684 /* any fence other than seq_cst, which isn't very efficient for us. */
685 /* Why that is, we don't know - either the C11 memory model is quite useless */
686 /* for most usages, or gcc and clang have a bug */
687 /* I *currently* lean towards the latter, and inefficiently implement */
688 /* all three of ecb's fences as a seq_cst fence */
689 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
690 #endif
691#endif
692
693#ifndef ECB_MEMORY_FENCE
694 #if !ECB_AVOID_PTHREADS
695 /*
696 * if you get undefined symbol references to pthread_mutex_lock,
697 * or failure to find pthread.h, then you should implement
698 * the ECB_MEMORY_FENCE operations for your cpu/compiler
699 * OR provide pthread.h and link against the posix thread library
700 * of your system.
701 */
702 #include <pthread.h>
703 #define ECB_NEEDS_PTHREADS 1
704 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
705
706 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
707 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
708 #endif
709#endif
710
711#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
712 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
713#endif
714
715#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
716 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
717#endif
718
719/*****************************************************************************/
720
721#if __cplusplus
722 #define ecb_inline static inline
723#elif ECB_GCC_VERSION(2,5)
724 #define ecb_inline static __inline__
725#elif ECB_C99
726 #define ecb_inline static inline
727#else
728 #define ecb_inline static
729#endif
730
731#if ECB_GCC_VERSION(3,3)
732 #define ecb_restrict __restrict__
733#elif ECB_C99
734 #define ecb_restrict restrict
735#else
736 #define ecb_restrict
737#endif
738
739typedef int ecb_bool;
740
741#define ECB_CONCAT_(a, b) a ## b
742#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
743#define ECB_STRINGIFY_(a) # a
744#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
745
746#define ecb_function_ ecb_inline
747
748#if ECB_GCC_VERSION(3,1)
749 #define ecb_attribute(attrlist) __attribute__(attrlist)
750 #define ecb_is_constant(expr) __builtin_constant_p (expr)
751 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
752 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
753#else
754 #define ecb_attribute(attrlist)
755 #define ecb_is_constant(expr) 0
756 #define ecb_expect(expr,value) (expr)
757 #define ecb_prefetch(addr,rw,locality)
758#endif
759
760/* no emulation for ecb_decltype */
761#if ECB_GCC_VERSION(4,5)
762 #define ecb_decltype(x) __decltype(x)
763#elif ECB_GCC_VERSION(3,0)
764 #define ecb_decltype(x) __typeof(x)
765#endif
766
767#define ecb_noinline ecb_attribute ((__noinline__))
768#define ecb_unused ecb_attribute ((__unused__))
769#define ecb_const ecb_attribute ((__const__))
770#define ecb_pure ecb_attribute ((__pure__))
771
772#if ECB_C11
773 #define ecb_noreturn _Noreturn
774#else
775 #define ecb_noreturn ecb_attribute ((__noreturn__))
776#endif
777
778#if ECB_GCC_VERSION(4,3)
779 #define ecb_artificial ecb_attribute ((__artificial__))
780 #define ecb_hot ecb_attribute ((__hot__))
781 #define ecb_cold ecb_attribute ((__cold__))
782#else
783 #define ecb_artificial
784 #define ecb_hot
785 #define ecb_cold
786#endif
787
788/* put around conditional expressions if you are very sure that the */
789/* expression is mostly true or mostly false. note that these return */
790/* booleans, not the expression. */
477#define expect_false(expr) expect ((expr) != 0, 0) 791#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
478#define expect_true(expr) expect ((expr) != 0, 1) 792#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
793/* for compatibility to the rest of the world */
794#define ecb_likely(expr) ecb_expect_true (expr)
795#define ecb_unlikely(expr) ecb_expect_false (expr)
796
797/* count trailing zero bits and count # of one bits */
798#if ECB_GCC_VERSION(3,4)
799 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
800 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
801 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
802 #define ecb_ctz32(x) __builtin_ctz (x)
803 #define ecb_ctz64(x) __builtin_ctzll (x)
804 #define ecb_popcount32(x) __builtin_popcount (x)
805 /* no popcountll */
806#else
807 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
808 ecb_function_ int
809 ecb_ctz32 (uint32_t x)
810 {
811 int r = 0;
812
813 x &= ~x + 1; /* this isolates the lowest bit */
814
815#if ECB_branchless_on_i386
816 r += !!(x & 0xaaaaaaaa) << 0;
817 r += !!(x & 0xcccccccc) << 1;
818 r += !!(x & 0xf0f0f0f0) << 2;
819 r += !!(x & 0xff00ff00) << 3;
820 r += !!(x & 0xffff0000) << 4;
821#else
822 if (x & 0xaaaaaaaa) r += 1;
823 if (x & 0xcccccccc) r += 2;
824 if (x & 0xf0f0f0f0) r += 4;
825 if (x & 0xff00ff00) r += 8;
826 if (x & 0xffff0000) r += 16;
827#endif
828
829 return r;
830 }
831
832 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
833 ecb_function_ int
834 ecb_ctz64 (uint64_t x)
835 {
836 int shift = x & 0xffffffffU ? 0 : 32;
837 return ecb_ctz32 (x >> shift) + shift;
838 }
839
840 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
841 ecb_function_ int
842 ecb_popcount32 (uint32_t x)
843 {
844 x -= (x >> 1) & 0x55555555;
845 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
846 x = ((x >> 4) + x) & 0x0f0f0f0f;
847 x *= 0x01010101;
848
849 return x >> 24;
850 }
851
852 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
853 ecb_function_ int ecb_ld32 (uint32_t x)
854 {
855 int r = 0;
856
857 if (x >> 16) { x >>= 16; r += 16; }
858 if (x >> 8) { x >>= 8; r += 8; }
859 if (x >> 4) { x >>= 4; r += 4; }
860 if (x >> 2) { x >>= 2; r += 2; }
861 if (x >> 1) { r += 1; }
862
863 return r;
864 }
865
866 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
867 ecb_function_ int ecb_ld64 (uint64_t x)
868 {
869 int r = 0;
870
871 if (x >> 32) { x >>= 32; r += 32; }
872
873 return r + ecb_ld32 (x);
874 }
875#endif
876
877ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
878ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
879ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
880ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
881
882ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
883ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
884{
885 return ( (x * 0x0802U & 0x22110U)
886 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
887}
888
889ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
890ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
891{
892 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
893 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
894 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
895 x = ( x >> 8 ) | ( x << 8);
896
897 return x;
898}
899
900ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
901ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
902{
903 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
904 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
905 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
906 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
907 x = ( x >> 16 ) | ( x << 16);
908
909 return x;
910}
911
912/* popcount64 is only available on 64 bit cpus as gcc builtin */
913/* so for this version we are lazy */
914ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
915ecb_function_ int
916ecb_popcount64 (uint64_t x)
917{
918 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
919}
920
921ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
922ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
923ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
924ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
925ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
926ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
927ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
928ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
929
930ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
931ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
932ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
933ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
934ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
935ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
936ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
937ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
938
939#if ECB_GCC_VERSION(4,3)
940 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
941 #define ecb_bswap32(x) __builtin_bswap32 (x)
942 #define ecb_bswap64(x) __builtin_bswap64 (x)
943#else
944 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
945 ecb_function_ uint16_t
946 ecb_bswap16 (uint16_t x)
947 {
948 return ecb_rotl16 (x, 8);
949 }
950
951 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
952 ecb_function_ uint32_t
953 ecb_bswap32 (uint32_t x)
954 {
955 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
956 }
957
958 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
959 ecb_function_ uint64_t
960 ecb_bswap64 (uint64_t x)
961 {
962 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
963 }
964#endif
965
966#if ECB_GCC_VERSION(4,5)
967 #define ecb_unreachable() __builtin_unreachable ()
968#else
969 /* this seems to work fine, but gcc always emits a warning for it :/ */
970 ecb_inline void ecb_unreachable (void) ecb_noreturn;
971 ecb_inline void ecb_unreachable (void) { }
972#endif
973
974/* try to tell the compiler that some condition is definitely true */
975#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
976
977ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
978ecb_inline unsigned char
979ecb_byteorder_helper (void)
980{
981 /* the union code still generates code under pressure in gcc, */
982 /* but less than using pointers, and always seems to */
983 /* successfully return a constant. */
984 /* the reason why we have this horrible preprocessor mess */
985 /* is to avoid it in all cases, at least on common architectures */
986 /* or when using a recent enough gcc version (>= 4.6) */
987#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
988 return 0x44;
989#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
990 return 0x44;
991#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
992 return 0x11;
993#else
994 union
995 {
996 uint32_t i;
997 uint8_t c;
998 } u = { 0x11223344 };
999 return u.c;
1000#endif
1001}
1002
1003ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1004ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1005ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1006ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1007
1008#if ECB_GCC_VERSION(3,0) || ECB_C99
1009 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1010#else
1011 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1012#endif
1013
1014#if __cplusplus
1015 template<typename T>
1016 static inline T ecb_div_rd (T val, T div)
1017 {
1018 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1019 }
1020 template<typename T>
1021 static inline T ecb_div_ru (T val, T div)
1022 {
1023 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1024 }
1025#else
1026 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1027 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1028#endif
1029
1030#if ecb_cplusplus_does_not_suck
1031 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1032 template<typename T, int N>
1033 static inline int ecb_array_length (const T (&arr)[N])
1034 {
1035 return N;
1036 }
1037#else
1038 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1039#endif
1040
1041/*******************************************************************************/
1042/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1043
1044/* basically, everything uses "ieee pure-endian" floating point numbers */
1045/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1046#if 0 \
1047 || __i386 || __i386__ \
1048 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1049 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1050 || defined __arm__ && defined __ARM_EABI__ \
1051 || defined __s390__ || defined __s390x__ \
1052 || defined __mips__ \
1053 || defined __alpha__ \
1054 || defined __hppa__ \
1055 || defined __ia64__ \
1056 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1057 #define ECB_STDFP 1
1058 #include <string.h> /* for memcpy */
1059#else
1060 #define ECB_STDFP 0
1061 #include <math.h> /* for frexp*, ldexp* */
1062#endif
1063
1064#ifndef ECB_NO_LIBM
1065
1066 /* convert a float to ieee single/binary32 */
1067 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1068 ecb_function_ uint32_t
1069 ecb_float_to_binary32 (float x)
1070 {
1071 uint32_t r;
1072
1073 #if ECB_STDFP
1074 memcpy (&r, &x, 4);
1075 #else
1076 /* slow emulation, works for anything but -0 */
1077 uint32_t m;
1078 int e;
1079
1080 if (x == 0e0f ) return 0x00000000U;
1081 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1082 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1083 if (x != x ) return 0x7fbfffffU;
1084
1085 m = frexpf (x, &e) * 0x1000000U;
1086
1087 r = m & 0x80000000U;
1088
1089 if (r)
1090 m = -m;
1091
1092 if (e <= -126)
1093 {
1094 m &= 0xffffffU;
1095 m >>= (-125 - e);
1096 e = -126;
1097 }
1098
1099 r |= (e + 126) << 23;
1100 r |= m & 0x7fffffU;
1101 #endif
1102
1103 return r;
1104 }
1105
1106 /* converts an ieee single/binary32 to a float */
1107 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1108 ecb_function_ float
1109 ecb_binary32_to_float (uint32_t x)
1110 {
1111 float r;
1112
1113 #if ECB_STDFP
1114 memcpy (&r, &x, 4);
1115 #else
1116 /* emulation, only works for normals and subnormals and +0 */
1117 int neg = x >> 31;
1118 int e = (x >> 23) & 0xffU;
1119
1120 x &= 0x7fffffU;
1121
1122 if (e)
1123 x |= 0x800000U;
1124 else
1125 e = 1;
1126
1127 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1128 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1129
1130 r = neg ? -r : r;
1131 #endif
1132
1133 return r;
1134 }
1135
1136 /* convert a double to ieee double/binary64 */
1137 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1138 ecb_function_ uint64_t
1139 ecb_double_to_binary64 (double x)
1140 {
1141 uint64_t r;
1142
1143 #if ECB_STDFP
1144 memcpy (&r, &x, 8);
1145 #else
1146 /* slow emulation, works for anything but -0 */
1147 uint64_t m;
1148 int e;
1149
1150 if (x == 0e0 ) return 0x0000000000000000U;
1151 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1152 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1153 if (x != x ) return 0X7ff7ffffffffffffU;
1154
1155 m = frexp (x, &e) * 0x20000000000000U;
1156
1157 r = m & 0x8000000000000000;;
1158
1159 if (r)
1160 m = -m;
1161
1162 if (e <= -1022)
1163 {
1164 m &= 0x1fffffffffffffU;
1165 m >>= (-1021 - e);
1166 e = -1022;
1167 }
1168
1169 r |= ((uint64_t)(e + 1022)) << 52;
1170 r |= m & 0xfffffffffffffU;
1171 #endif
1172
1173 return r;
1174 }
1175
1176 /* converts an ieee double/binary64 to a double */
1177 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1178 ecb_function_ double
1179 ecb_binary64_to_double (uint64_t x)
1180 {
1181 double r;
1182
1183 #if ECB_STDFP
1184 memcpy (&r, &x, 8);
1185 #else
1186 /* emulation, only works for normals and subnormals and +0 */
1187 int neg = x >> 63;
1188 int e = (x >> 52) & 0x7ffU;
1189
1190 x &= 0xfffffffffffffU;
1191
1192 if (e)
1193 x |= 0x10000000000000U;
1194 else
1195 e = 1;
1196
1197 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1198 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1199
1200 r = neg ? -r : r;
1201 #endif
1202
1203 return r;
1204 }
1205
1206#endif
1207
1208#endif
1209
1210/* ECB.H END */
1211
1212#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1213/* if your architecture doesn't need memory fences, e.g. because it is
1214 * single-cpu/core, or if you use libev in a project that doesn't use libev
1215 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1216 * libev, in which cases the memory fences become nops.
1217 * alternatively, you can remove this #error and link against libpthread,
1218 * which will then provide the memory fences.
1219 */
1220# error "memory fences not defined for your architecture, please report"
1221#endif
1222
1223#ifndef ECB_MEMORY_FENCE
1224# define ECB_MEMORY_FENCE do { } while (0)
1225# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1226# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1227#endif
1228
1229#define expect_false(cond) ecb_expect_false (cond)
1230#define expect_true(cond) ecb_expect_true (cond)
1231#define noinline ecb_noinline
1232
479#define inline_size static inline 1233#define inline_size ecb_inline
480 1234
481#if EV_MINIMAL 1235#if EV_FEATURE_CODE
1236# define inline_speed ecb_inline
1237#else
482# define inline_speed static noinline 1238# define inline_speed static noinline
483#else
484# define inline_speed static inline
485#endif 1239#endif
486 1240
487#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1241#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
488 1242
489#if EV_MINPRI == EV_MAXPRI 1243#if EV_MINPRI == EV_MAXPRI
… …
502#define ev_active(w) ((W)(w))->active 1256#define ev_active(w) ((W)(w))->active
503#define ev_at(w) ((WT)(w))->at 1257#define ev_at(w) ((WT)(w))->at
504 1258
505#if EV_USE_REALTIME 1259#if EV_USE_REALTIME
506/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1260/* sig_atomic_t is used to avoid per-thread variables or locking but still */
507/* giving it a reasonably high chance of working on typical architetcures */ 1261/* giving it a reasonably high chance of working on typical architectures */
508static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1262static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
509#endif 1263#endif
510 1264
511#if EV_USE_MONOTONIC 1265#if EV_USE_MONOTONIC
512static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1266static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
526# include "ev_win32.c" 1280# include "ev_win32.c"
527#endif 1281#endif
528 1282
529/*****************************************************************************/ 1283/*****************************************************************************/
530 1284
1285/* define a suitable floor function (only used by periodics atm) */
1286
1287#if EV_USE_FLOOR
1288# include <math.h>
1289# define ev_floor(v) floor (v)
1290#else
1291
1292#include <float.h>
1293
1294/* a floor() replacement function, should be independent of ev_tstamp type */
1295static ev_tstamp noinline
1296ev_floor (ev_tstamp v)
1297{
1298 /* the choice of shift factor is not terribly important */
1299#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1300 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1301#else
1302 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1303#endif
1304
1305 /* argument too large for an unsigned long? */
1306 if (expect_false (v >= shift))
1307 {
1308 ev_tstamp f;
1309
1310 if (v == v - 1.)
1311 return v; /* very large number */
1312
1313 f = shift * ev_floor (v * (1. / shift));
1314 return f + ev_floor (v - f);
1315 }
1316
1317 /* special treatment for negative args? */
1318 if (expect_false (v < 0.))
1319 {
1320 ev_tstamp f = -ev_floor (-v);
1321
1322 return f - (f == v ? 0 : 1);
1323 }
1324
1325 /* fits into an unsigned long */
1326 return (unsigned long)v;
1327}
1328
1329#endif
1330
1331/*****************************************************************************/
1332
1333#ifdef __linux
1334# include <sys/utsname.h>
1335#endif
1336
1337static unsigned int noinline ecb_cold
1338ev_linux_version (void)
1339{
1340#ifdef __linux
1341 unsigned int v = 0;
1342 struct utsname buf;
1343 int i;
1344 char *p = buf.release;
1345
1346 if (uname (&buf))
1347 return 0;
1348
1349 for (i = 3+1; --i; )
1350 {
1351 unsigned int c = 0;
1352
1353 for (;;)
1354 {
1355 if (*p >= '0' && *p <= '9')
1356 c = c * 10 + *p++ - '0';
1357 else
1358 {
1359 p += *p == '.';
1360 break;
1361 }
1362 }
1363
1364 v = (v << 8) | c;
1365 }
1366
1367 return v;
1368#else
1369 return 0;
1370#endif
1371}
1372
1373/*****************************************************************************/
1374
531#if EV_AVOID_STDIO 1375#if EV_AVOID_STDIO
532static void noinline 1376static void noinline ecb_cold
533ev_printerr (const char *msg) 1377ev_printerr (const char *msg)
534{ 1378{
535 write (STDERR_FILENO, msg, strlen (msg)); 1379 write (STDERR_FILENO, msg, strlen (msg));
536} 1380}
537#endif 1381#endif
538 1382
539static void (*syserr_cb)(const char *msg); 1383static void (*syserr_cb)(const char *msg) EV_THROW;
540 1384
541void 1385void ecb_cold
542ev_set_syserr_cb (void (*cb)(const char *msg)) 1386ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
543{ 1387{
544 syserr_cb = cb; 1388 syserr_cb = cb;
545} 1389}
546 1390
547static void noinline 1391static void noinline ecb_cold
548ev_syserr (const char *msg) 1392ev_syserr (const char *msg)
549{ 1393{
550 if (!msg) 1394 if (!msg)
551 msg = "(libev) system error"; 1395 msg = "(libev) system error";
552 1396
553 if (syserr_cb) 1397 if (syserr_cb)
554 syserr_cb (msg); 1398 syserr_cb (msg);
555 else 1399 else
556 { 1400 {
557#if EV_AVOID_STDIO 1401#if EV_AVOID_STDIO
558 const char *err = strerror (errno);
559
560 ev_printerr (msg); 1402 ev_printerr (msg);
561 ev_printerr (": "); 1403 ev_printerr (": ");
562 ev_printerr (err); 1404 ev_printerr (strerror (errno));
563 ev_printerr ("\n"); 1405 ev_printerr ("\n");
564#else 1406#else
565 perror (msg); 1407 perror (msg);
566#endif 1408#endif
567 abort (); 1409 abort ();
568 } 1410 }
569} 1411}
570 1412
571static void * 1413static void *
572ev_realloc_emul (void *ptr, long size) 1414ev_realloc_emul (void *ptr, long size) EV_THROW
573{ 1415{
574#if __GLIBC__
575 return realloc (ptr, size);
576#else
577 /* some systems, notably openbsd and darwin, fail to properly 1416 /* some systems, notably openbsd and darwin, fail to properly
578 * implement realloc (x, 0) (as required by both ansi c-89 and 1417 * implement realloc (x, 0) (as required by both ansi c-89 and
579 * the single unix specification, so work around them here. 1418 * the single unix specification, so work around them here.
1419 * recently, also (at least) fedora and debian started breaking it,
1420 * despite documenting it otherwise.
580 */ 1421 */
581 1422
582 if (size) 1423 if (size)
583 return realloc (ptr, size); 1424 return realloc (ptr, size);
584 1425
585 free (ptr); 1426 free (ptr);
586 return 0; 1427 return 0;
587#endif
588} 1428}
589 1429
590static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1430static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
591 1431
592void 1432void ecb_cold
593ev_set_allocator (void *(*cb)(void *ptr, long size)) 1433ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
594{ 1434{
595 alloc = cb; 1435 alloc = cb;
596} 1436}
597 1437
598inline_speed void * 1438inline_speed void *
… …
601 ptr = alloc (ptr, size); 1441 ptr = alloc (ptr, size);
602 1442
603 if (!ptr && size) 1443 if (!ptr && size)
604 { 1444 {
605#if EV_AVOID_STDIO 1445#if EV_AVOID_STDIO
606 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1446 ev_printerr ("(libev) memory allocation failed, aborting.\n");
607#else 1447#else
608 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1448 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
609#endif 1449#endif
610 abort (); 1450 abort ();
611 } 1451 }
612 1452
613 return ptr; 1453 return ptr;
… …
630 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1470 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
631 unsigned char unused; 1471 unsigned char unused;
632#if EV_USE_EPOLL 1472#if EV_USE_EPOLL
633 unsigned int egen; /* generation counter to counter epoll bugs */ 1473 unsigned int egen; /* generation counter to counter epoll bugs */
634#endif 1474#endif
635#if EV_SELECT_IS_WINSOCKET 1475#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
636 SOCKET handle; 1476 SOCKET handle;
1477#endif
1478#if EV_USE_IOCP
1479 OVERLAPPED or, ow;
637#endif 1480#endif
638} ANFD; 1481} ANFD;
639 1482
640/* stores the pending event set for a given watcher */ 1483/* stores the pending event set for a given watcher */
641typedef struct 1484typedef struct
… …
683 #undef VAR 1526 #undef VAR
684 }; 1527 };
685 #include "ev_wrap.h" 1528 #include "ev_wrap.h"
686 1529
687 static struct ev_loop default_loop_struct; 1530 static struct ev_loop default_loop_struct;
688 struct ev_loop *ev_default_loop_ptr; 1531 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
689 1532
690#else 1533#else
691 1534
692 ev_tstamp ev_rt_now; 1535 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
693 #define VAR(name,decl) static decl; 1536 #define VAR(name,decl) static decl;
694 #include "ev_vars.h" 1537 #include "ev_vars.h"
695 #undef VAR 1538 #undef VAR
696 1539
697 static int ev_default_loop_ptr; 1540 static int ev_default_loop_ptr;
698 1541
699#endif 1542#endif
700 1543
701#if EV_MINIMAL < 2 1544#if EV_FEATURE_API
702# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1545# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
703# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1546# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
704# define EV_INVOKE_PENDING invoke_cb (EV_A) 1547# define EV_INVOKE_PENDING invoke_cb (EV_A)
705#else 1548#else
706# define EV_RELEASE_CB (void)0 1549# define EV_RELEASE_CB (void)0
707# define EV_ACQUIRE_CB (void)0 1550# define EV_ACQUIRE_CB (void)0
708# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1551# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
709#endif 1552#endif
710 1553
711#define EVUNLOOP_RECURSE 0x80 1554#define EVBREAK_RECURSE 0x80
712 1555
713/*****************************************************************************/ 1556/*****************************************************************************/
714 1557
715#ifndef EV_HAVE_EV_TIME 1558#ifndef EV_HAVE_EV_TIME
716ev_tstamp 1559ev_tstamp
717ev_time (void) 1560ev_time (void) EV_THROW
718{ 1561{
719#if EV_USE_REALTIME 1562#if EV_USE_REALTIME
720 if (expect_true (have_realtime)) 1563 if (expect_true (have_realtime))
721 { 1564 {
722 struct timespec ts; 1565 struct timespec ts;
… …
746 return ev_time (); 1589 return ev_time ();
747} 1590}
748 1591
749#if EV_MULTIPLICITY 1592#if EV_MULTIPLICITY
750ev_tstamp 1593ev_tstamp
751ev_now (EV_P) 1594ev_now (EV_P) EV_THROW
752{ 1595{
753 return ev_rt_now; 1596 return ev_rt_now;
754} 1597}
755#endif 1598#endif
756 1599
757void 1600void
758ev_sleep (ev_tstamp delay) 1601ev_sleep (ev_tstamp delay) EV_THROW
759{ 1602{
760 if (delay > 0.) 1603 if (delay > 0.)
761 { 1604 {
762#if EV_USE_NANOSLEEP 1605#if EV_USE_NANOSLEEP
763 struct timespec ts; 1606 struct timespec ts;
764 1607
765 ts.tv_sec = (time_t)delay; 1608 EV_TS_SET (ts, delay);
766 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
767
768 nanosleep (&ts, 0); 1609 nanosleep (&ts, 0);
769#elif defined(_WIN32) 1610#elif defined _WIN32
770 Sleep ((unsigned long)(delay * 1e3)); 1611 Sleep ((unsigned long)(delay * 1e3));
771#else 1612#else
772 struct timeval tv; 1613 struct timeval tv;
773 1614
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 */ 1615 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
778 /* something not guaranteed by newer posix versions, but guaranteed */ 1616 /* something not guaranteed by newer posix versions, but guaranteed */
779 /* by older ones */ 1617 /* by older ones */
1618 EV_TV_SET (tv, delay);
780 select (0, 0, 0, 0, &tv); 1619 select (0, 0, 0, 0, &tv);
781#endif 1620#endif
782 } 1621 }
783} 1622}
784 1623
785/*****************************************************************************/ 1624/*****************************************************************************/
786 1625
787#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1626#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
788 1627
789/* find a suitable new size for the given array, */ 1628/* find a suitable new size for the given array, */
790/* hopefully by rounding to a ncie-to-malloc size */ 1629/* hopefully by rounding to a nice-to-malloc size */
791inline_size int 1630inline_size int
792array_nextsize (int elem, int cur, int cnt) 1631array_nextsize (int elem, int cur, int cnt)
793{ 1632{
794 int ncur = cur + 1; 1633 int ncur = cur + 1;
795 1634
796 do 1635 do
797 ncur <<= 1; 1636 ncur <<= 1;
798 while (cnt > ncur); 1637 while (cnt > ncur);
799 1638
800 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1639 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
801 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1640 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
802 { 1641 {
803 ncur *= elem; 1642 ncur *= elem;
804 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1643 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
805 ncur = ncur - sizeof (void *) * 4; 1644 ncur = ncur - sizeof (void *) * 4;
… …
807 } 1646 }
808 1647
809 return ncur; 1648 return ncur;
810} 1649}
811 1650
812static noinline void * 1651static void * noinline ecb_cold
813array_realloc (int elem, void *base, int *cur, int cnt) 1652array_realloc (int elem, void *base, int *cur, int cnt)
814{ 1653{
815 *cur = array_nextsize (elem, *cur, cnt); 1654 *cur = array_nextsize (elem, *cur, cnt);
816 return ev_realloc (base, elem * *cur); 1655 return ev_realloc (base, elem * *cur);
817} 1656}
… …
820 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1659 memset ((void *)(base), 0, sizeof (*(base)) * (count))
821 1660
822#define array_needsize(type,base,cur,cnt,init) \ 1661#define array_needsize(type,base,cur,cnt,init) \
823 if (expect_false ((cnt) > (cur))) \ 1662 if (expect_false ((cnt) > (cur))) \
824 { \ 1663 { \
825 int ocur_ = (cur); \ 1664 int ecb_unused ocur_ = (cur); \
826 (base) = (type *)array_realloc \ 1665 (base) = (type *)array_realloc \
827 (sizeof (type), (base), &(cur), (cnt)); \ 1666 (sizeof (type), (base), &(cur), (cnt)); \
828 init ((base) + (ocur_), (cur) - ocur_); \ 1667 init ((base) + (ocur_), (cur) - ocur_); \
829 } 1668 }
830 1669
… …
848pendingcb (EV_P_ ev_prepare *w, int revents) 1687pendingcb (EV_P_ ev_prepare *w, int revents)
849{ 1688{
850} 1689}
851 1690
852void noinline 1691void noinline
853ev_feed_event (EV_P_ void *w, int revents) 1692ev_feed_event (EV_P_ void *w, int revents) EV_THROW
854{ 1693{
855 W w_ = (W)w; 1694 W w_ = (W)w;
856 int pri = ABSPRI (w_); 1695 int pri = ABSPRI (w_);
857 1696
858 if (expect_false (w_->pending)) 1697 if (expect_false (w_->pending))
… …
862 w_->pending = ++pendingcnt [pri]; 1701 w_->pending = ++pendingcnt [pri];
863 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1702 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
864 pendings [pri][w_->pending - 1].w = w_; 1703 pendings [pri][w_->pending - 1].w = w_;
865 pendings [pri][w_->pending - 1].events = revents; 1704 pendings [pri][w_->pending - 1].events = revents;
866 } 1705 }
1706
1707 pendingpri = NUMPRI - 1;
867} 1708}
868 1709
869inline_speed void 1710inline_speed void
870feed_reverse (EV_P_ W w) 1711feed_reverse (EV_P_ W w)
871{ 1712{
… …
891} 1732}
892 1733
893/*****************************************************************************/ 1734/*****************************************************************************/
894 1735
895inline_speed void 1736inline_speed void
896fd_event_nc (EV_P_ int fd, int revents) 1737fd_event_nocheck (EV_P_ int fd, int revents)
897{ 1738{
898 ANFD *anfd = anfds + fd; 1739 ANFD *anfd = anfds + fd;
899 ev_io *w; 1740 ev_io *w;
900 1741
901 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1742 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
913fd_event (EV_P_ int fd, int revents) 1754fd_event (EV_P_ int fd, int revents)
914{ 1755{
915 ANFD *anfd = anfds + fd; 1756 ANFD *anfd = anfds + fd;
916 1757
917 if (expect_true (!anfd->reify)) 1758 if (expect_true (!anfd->reify))
918 fd_event_nc (EV_A_ fd, revents); 1759 fd_event_nocheck (EV_A_ fd, revents);
919} 1760}
920 1761
921void 1762void
922ev_feed_fd_event (EV_P_ int fd, int revents) 1763ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
923{ 1764{
924 if (fd >= 0 && fd < anfdmax) 1765 if (fd >= 0 && fd < anfdmax)
925 fd_event_nc (EV_A_ fd, revents); 1766 fd_event_nocheck (EV_A_ fd, revents);
926} 1767}
927 1768
928/* make sure the external fd watch events are in-sync */ 1769/* make sure the external fd watch events are in-sync */
929/* with the kernel/libev internal state */ 1770/* with the kernel/libev internal state */
930inline_size void 1771inline_size void
931fd_reify (EV_P) 1772fd_reify (EV_P)
932{ 1773{
933 int i; 1774 int i;
934 1775
1776#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1777 for (i = 0; i < fdchangecnt; ++i)
1778 {
1779 int fd = fdchanges [i];
1780 ANFD *anfd = anfds + fd;
1781
1782 if (anfd->reify & EV__IOFDSET && anfd->head)
1783 {
1784 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1785
1786 if (handle != anfd->handle)
1787 {
1788 unsigned long arg;
1789
1790 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1791
1792 /* handle changed, but fd didn't - we need to do it in two steps */
1793 backend_modify (EV_A_ fd, anfd->events, 0);
1794 anfd->events = 0;
1795 anfd->handle = handle;
1796 }
1797 }
1798 }
1799#endif
1800
935 for (i = 0; i < fdchangecnt; ++i) 1801 for (i = 0; i < fdchangecnt; ++i)
936 { 1802 {
937 int fd = fdchanges [i]; 1803 int fd = fdchanges [i];
938 ANFD *anfd = anfds + fd; 1804 ANFD *anfd = anfds + fd;
939 ev_io *w; 1805 ev_io *w;
940 1806
941 unsigned char events = 0; 1807 unsigned char o_events = anfd->events;
1808 unsigned char o_reify = anfd->reify;
942 1809
943 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1810 anfd->reify = 0;
944 events |= (unsigned char)w->events;
945 1811
946#if EV_SELECT_IS_WINSOCKET 1812 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
947 if (events)
948 { 1813 {
949 unsigned long arg; 1814 anfd->events = 0;
950 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1815
951 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1816 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1817 anfd->events |= (unsigned char)w->events;
1818
1819 if (o_events != anfd->events)
1820 o_reify = EV__IOFDSET; /* actually |= */
952 } 1821 }
953#endif
954 1822
955 { 1823 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); 1824 backend_modify (EV_A_ fd, o_events, anfd->events);
964 }
965 } 1825 }
966 1826
967 fdchangecnt = 0; 1827 fdchangecnt = 0;
968} 1828}
969 1829
… …
981 fdchanges [fdchangecnt - 1] = fd; 1841 fdchanges [fdchangecnt - 1] = fd;
982 } 1842 }
983} 1843}
984 1844
985/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1845/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
986inline_speed void 1846inline_speed void ecb_cold
987fd_kill (EV_P_ int fd) 1847fd_kill (EV_P_ int fd)
988{ 1848{
989 ev_io *w; 1849 ev_io *w;
990 1850
991 while ((w = (ev_io *)anfds [fd].head)) 1851 while ((w = (ev_io *)anfds [fd].head))
… …
994 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1854 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
995 } 1855 }
996} 1856}
997 1857
998/* check whether the given fd is actually valid, for error recovery */ 1858/* check whether the given fd is actually valid, for error recovery */
999inline_size int 1859inline_size int ecb_cold
1000fd_valid (int fd) 1860fd_valid (int fd)
1001{ 1861{
1002#ifdef _WIN32 1862#ifdef _WIN32
1003 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1863 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1004#else 1864#else
1005 return fcntl (fd, F_GETFD) != -1; 1865 return fcntl (fd, F_GETFD) != -1;
1006#endif 1866#endif
1007} 1867}
1008 1868
1009/* called on EBADF to verify fds */ 1869/* called on EBADF to verify fds */
1010static void noinline 1870static void noinline ecb_cold
1011fd_ebadf (EV_P) 1871fd_ebadf (EV_P)
1012{ 1872{
1013 int fd; 1873 int fd;
1014 1874
1015 for (fd = 0; fd < anfdmax; ++fd) 1875 for (fd = 0; fd < anfdmax; ++fd)
… …
1017 if (!fd_valid (fd) && errno == EBADF) 1877 if (!fd_valid (fd) && errno == EBADF)
1018 fd_kill (EV_A_ fd); 1878 fd_kill (EV_A_ fd);
1019} 1879}
1020 1880
1021/* called on ENOMEM in select/poll to kill some fds and retry */ 1881/* called on ENOMEM in select/poll to kill some fds and retry */
1022static void noinline 1882static void noinline ecb_cold
1023fd_enomem (EV_P) 1883fd_enomem (EV_P)
1024{ 1884{
1025 int fd; 1885 int fd;
1026 1886
1027 for (fd = anfdmax; fd--; ) 1887 for (fd = anfdmax; fd--; )
… …
1062} 1922}
1063 1923
1064/*****************************************************************************/ 1924/*****************************************************************************/
1065 1925
1066/* 1926/*
1067 * the heap functions want a real array index. array index 0 uis guaranteed to not 1927 * the heap functions want a real array index. array index 0 is guaranteed to not
1068 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1928 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1069 * the branching factor of the d-tree. 1929 * the branching factor of the d-tree.
1070 */ 1930 */
1071 1931
1072/* 1932/*
… …
1222 2082
1223/*****************************************************************************/ 2083/*****************************************************************************/
1224 2084
1225#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2085#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1226 2086
1227static void noinline 2087static void noinline ecb_cold
1228evpipe_init (EV_P) 2088evpipe_init (EV_P)
1229{ 2089{
1230 if (!ev_is_active (&pipe_w)) 2090 if (!ev_is_active (&pipe_w))
1231 { 2091 {
2092 int fds [2];
2093
1232# if EV_USE_EVENTFD 2094# if EV_USE_EVENTFD
2095 fds [0] = -1;
1233 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2096 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1234 if (evfd < 0 && errno == EINVAL) 2097 if (fds [1] < 0 && errno == EINVAL)
1235 evfd = eventfd (0, 0); 2098 fds [1] = eventfd (0, 0);
1236 2099
1237 if (evfd >= 0) 2100 if (fds [1] < 0)
2101# endif
1238 { 2102 {
2103 while (pipe (fds))
2104 ev_syserr ("(libev) error creating signal/async pipe");
2105
2106 fd_intern (fds [0]);
2107 }
2108
1239 evpipe [0] = -1; 2109 evpipe [0] = fds [0];
1240 fd_intern (evfd); /* doing it twice doesn't hurt */ 2110
1241 ev_io_set (&pipe_w, evfd, EV_READ); 2111 if (evpipe [1] < 0)
2112 evpipe [1] = fds [1]; /* first call, set write fd */
2113 else
2114 {
2115 /* on subsequent calls, do not change evpipe [1] */
2116 /* so that evpipe_write can always rely on its value. */
2117 /* this branch does not do anything sensible on windows, */
2118 /* so must not be executed on windows */
2119
2120 dup2 (fds [1], evpipe [1]);
2121 close (fds [1]);
2122 }
2123
2124 fd_intern (evpipe [1]);
2125
2126 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2127 ev_io_start (EV_A_ &pipe_w);
2128 ev_unref (EV_A); /* watcher should not keep loop alive */
2129 }
2130}
2131
2132inline_speed void
2133evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2134{
2135 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2136
2137 if (expect_true (*flag))
2138 return;
2139
2140 *flag = 1;
2141 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2142
2143 pipe_write_skipped = 1;
2144
2145 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2146
2147 if (pipe_write_wanted)
2148 {
2149 int old_errno;
2150
2151 pipe_write_skipped = 0;
2152 ECB_MEMORY_FENCE_RELEASE;
2153
2154 old_errno = errno; /* save errno because write will clobber it */
2155
2156#if EV_USE_EVENTFD
2157 if (evpipe [0] < 0)
2158 {
2159 uint64_t counter = 1;
2160 write (evpipe [1], &counter, sizeof (uint64_t));
1242 } 2161 }
1243 else 2162 else
1244# endif 2163#endif
1245 { 2164 {
1246 while (pipe (evpipe)) 2165#ifdef _WIN32
1247 ev_syserr ("(libev) error creating signal/async pipe"); 2166 WSABUF buf;
1248 2167 DWORD sent;
1249 fd_intern (evpipe [0]); 2168 buf.buf = &buf;
1250 fd_intern (evpipe [1]); 2169 buf.len = 1;
1251 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2170 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2171#else
2172 write (evpipe [1], &(evpipe [1]), 1);
2173#endif
1252 } 2174 }
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 2175
1279 errno = old_errno; 2176 errno = old_errno;
1280 } 2177 }
1281} 2178}
1282 2179
… …
1285static void 2182static void
1286pipecb (EV_P_ ev_io *iow, int revents) 2183pipecb (EV_P_ ev_io *iow, int revents)
1287{ 2184{
1288 int i; 2185 int i;
1289 2186
2187 if (revents & EV_READ)
2188 {
1290#if EV_USE_EVENTFD 2189#if EV_USE_EVENTFD
1291 if (evfd >= 0) 2190 if (evpipe [0] < 0)
1292 { 2191 {
1293 uint64_t counter; 2192 uint64_t counter;
1294 read (evfd, &counter, sizeof (uint64_t)); 2193 read (evpipe [1], &counter, sizeof (uint64_t));
1295 } 2194 }
1296 else 2195 else
1297#endif 2196#endif
1298 { 2197 {
1299 char dummy; 2198 char dummy[4];
2199#ifdef _WIN32
2200 WSABUF buf;
2201 DWORD recvd;
2202 DWORD flags = 0;
2203 buf.buf = dummy;
2204 buf.len = sizeof (dummy);
2205 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2206#else
1300 read (evpipe [0], &dummy, 1); 2207 read (evpipe [0], &dummy, sizeof (dummy));
2208#endif
2209 }
1301 } 2210 }
1302 2211
2212 pipe_write_skipped = 0;
2213
2214 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2215
2216#if EV_SIGNAL_ENABLE
1303 if (sig_pending) 2217 if (sig_pending)
1304 { 2218 {
1305 sig_pending = 0; 2219 sig_pending = 0;
2220
2221 ECB_MEMORY_FENCE;
1306 2222
1307 for (i = EV_NSIG - 1; i--; ) 2223 for (i = EV_NSIG - 1; i--; )
1308 if (expect_false (signals [i].pending)) 2224 if (expect_false (signals [i].pending))
1309 ev_feed_signal_event (EV_A_ i + 1); 2225 ev_feed_signal_event (EV_A_ i + 1);
1310 } 2226 }
2227#endif
1311 2228
1312#if EV_ASYNC_ENABLE 2229#if EV_ASYNC_ENABLE
1313 if (async_pending) 2230 if (async_pending)
1314 { 2231 {
1315 async_pending = 0; 2232 async_pending = 0;
2233
2234 ECB_MEMORY_FENCE;
1316 2235
1317 for (i = asynccnt; i--; ) 2236 for (i = asynccnt; i--; )
1318 if (asyncs [i]->sent) 2237 if (asyncs [i]->sent)
1319 { 2238 {
1320 asyncs [i]->sent = 0; 2239 asyncs [i]->sent = 0;
2240 ECB_MEMORY_FENCE_RELEASE;
1321 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2241 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1322 } 2242 }
1323 } 2243 }
1324#endif 2244#endif
1325} 2245}
1326 2246
1327/*****************************************************************************/ 2247/*****************************************************************************/
1328 2248
2249void
2250ev_feed_signal (int signum) EV_THROW
2251{
2252#if EV_MULTIPLICITY
2253 EV_P;
2254 ECB_MEMORY_FENCE_ACQUIRE;
2255 EV_A = signals [signum - 1].loop;
2256
2257 if (!EV_A)
2258 return;
2259#endif
2260
2261 signals [signum - 1].pending = 1;
2262 evpipe_write (EV_A_ &sig_pending);
2263}
2264
1329static void 2265static void
1330ev_sighandler (int signum) 2266ev_sighandler (int signum)
1331{ 2267{
1332#if EV_MULTIPLICITY
1333 EV_P = signals [signum - 1].loop;
1334#endif
1335
1336#ifdef _WIN32 2268#ifdef _WIN32
1337 signal (signum, ev_sighandler); 2269 signal (signum, ev_sighandler);
1338#endif 2270#endif
1339 2271
1340 signals [signum - 1].pending = 1; 2272 ev_feed_signal (signum);
1341 evpipe_write (EV_A_ &sig_pending);
1342} 2273}
1343 2274
1344void noinline 2275void noinline
1345ev_feed_signal_event (EV_P_ int signum) 2276ev_feed_signal_event (EV_P_ int signum) EV_THROW
1346{ 2277{
1347 WL w; 2278 WL w;
1348 2279
1349 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2280 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1350 return; 2281 return;
1351 2282
1352 --signum; 2283 --signum;
1353 2284
1354#if EV_MULTIPLICITY 2285#if EV_MULTIPLICITY
… …
1358 if (expect_false (signals [signum].loop != EV_A)) 2289 if (expect_false (signals [signum].loop != EV_A))
1359 return; 2290 return;
1360#endif 2291#endif
1361 2292
1362 signals [signum].pending = 0; 2293 signals [signum].pending = 0;
2294 ECB_MEMORY_FENCE_RELEASE;
1363 2295
1364 for (w = signals [signum].head; w; w = w->next) 2296 for (w = signals [signum].head; w; w = w->next)
1365 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2297 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1366} 2298}
1367 2299
… …
1403child_reap (EV_P_ int chain, int pid, int status) 2335child_reap (EV_P_ int chain, int pid, int status)
1404{ 2336{
1405 ev_child *w; 2337 ev_child *w;
1406 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2338 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1407 2339
1408 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2340 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1409 { 2341 {
1410 if ((w->pid == pid || !w->pid) 2342 if ((w->pid == pid || !w->pid)
1411 && (!traced || (w->flags & 1))) 2343 && (!traced || (w->flags & 1)))
1412 { 2344 {
1413 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2345 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1438 /* make sure we are called again until all children have been reaped */ 2370 /* make sure we are called again until all children have been reaped */
1439 /* we need to do it this way so that the callback gets called before we continue */ 2371 /* we need to do it this way so that the callback gets called before we continue */
1440 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2372 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1441 2373
1442 child_reap (EV_A_ pid, pid, status); 2374 child_reap (EV_A_ pid, pid, status);
1443 if (EV_PID_HASHSIZE > 1) 2375 if ((EV_PID_HASHSIZE) > 1)
1444 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2376 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1445} 2377}
1446 2378
1447#endif 2379#endif
1448 2380
1449/*****************************************************************************/ 2381/*****************************************************************************/
1450 2382
2383#if EV_USE_IOCP
2384# include "ev_iocp.c"
2385#endif
1451#if EV_USE_PORT 2386#if EV_USE_PORT
1452# include "ev_port.c" 2387# include "ev_port.c"
1453#endif 2388#endif
1454#if EV_USE_KQUEUE 2389#if EV_USE_KQUEUE
1455# include "ev_kqueue.c" 2390# include "ev_kqueue.c"
… …
1462#endif 2397#endif
1463#if EV_USE_SELECT 2398#if EV_USE_SELECT
1464# include "ev_select.c" 2399# include "ev_select.c"
1465#endif 2400#endif
1466 2401
1467int 2402int ecb_cold
1468ev_version_major (void) 2403ev_version_major (void) EV_THROW
1469{ 2404{
1470 return EV_VERSION_MAJOR; 2405 return EV_VERSION_MAJOR;
1471} 2406}
1472 2407
1473int 2408int ecb_cold
1474ev_version_minor (void) 2409ev_version_minor (void) EV_THROW
1475{ 2410{
1476 return EV_VERSION_MINOR; 2411 return EV_VERSION_MINOR;
1477} 2412}
1478 2413
1479/* return true if we are running with elevated privileges and should ignore env variables */ 2414/* return true if we are running with elevated privileges and should ignore env variables */
1480int inline_size 2415int inline_size ecb_cold
1481enable_secure (void) 2416enable_secure (void)
1482{ 2417{
1483#ifdef _WIN32 2418#ifdef _WIN32
1484 return 0; 2419 return 0;
1485#else 2420#else
1486 return getuid () != geteuid () 2421 return getuid () != geteuid ()
1487 || getgid () != getegid (); 2422 || getgid () != getegid ();
1488#endif 2423#endif
1489} 2424}
1490 2425
1491unsigned int 2426unsigned int ecb_cold
1492ev_supported_backends (void) 2427ev_supported_backends (void) EV_THROW
1493{ 2428{
1494 unsigned int flags = 0; 2429 unsigned int flags = 0;
1495 2430
1496 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2431 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1497 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2432 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1500 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2435 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1501 2436
1502 return flags; 2437 return flags;
1503} 2438}
1504 2439
1505unsigned int 2440unsigned int ecb_cold
1506ev_recommended_backends (void) 2441ev_recommended_backends (void) EV_THROW
1507{ 2442{
1508 unsigned int flags = ev_supported_backends (); 2443 unsigned int flags = ev_supported_backends ();
1509 2444
1510#ifndef __NetBSD__ 2445#ifndef __NetBSD__
1511 /* kqueue is borked on everything but netbsd apparently */ 2446 /* kqueue is borked on everything but netbsd apparently */
… …
1515#ifdef __APPLE__ 2450#ifdef __APPLE__
1516 /* only select works correctly on that "unix-certified" platform */ 2451 /* only select works correctly on that "unix-certified" platform */
1517 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2452 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1518 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2453 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1519#endif 2454#endif
2455#ifdef __FreeBSD__
2456 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2457#endif
1520 2458
1521 return flags; 2459 return flags;
1522} 2460}
1523 2461
2462unsigned int ecb_cold
2463ev_embeddable_backends (void) EV_THROW
2464{
2465 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2466
2467 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2468 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2469 flags &= ~EVBACKEND_EPOLL;
2470
2471 return flags;
2472}
2473
1524unsigned int 2474unsigned int
1525ev_embeddable_backends (void) 2475ev_backend (EV_P) EV_THROW
1526{ 2476{
1527 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2477 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} 2478}
1535 2479
2480#if EV_FEATURE_API
1536unsigned int 2481unsigned int
1537ev_backend (EV_P) 2482ev_iteration (EV_P) EV_THROW
1538{ 2483{
1539 return backend; 2484 return loop_count;
1540} 2485}
1541 2486
1542#if EV_MINIMAL < 2
1543unsigned int 2487unsigned int
1544ev_loop_count (EV_P) 2488ev_depth (EV_P) EV_THROW
1545{
1546 return loop_count;
1547}
1548
1549unsigned int
1550ev_loop_depth (EV_P)
1551{ 2489{
1552 return loop_depth; 2490 return loop_depth;
1553} 2491}
1554 2492
1555void 2493void
1556ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2494ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1557{ 2495{
1558 io_blocktime = interval; 2496 io_blocktime = interval;
1559} 2497}
1560 2498
1561void 2499void
1562ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2500ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1563{ 2501{
1564 timeout_blocktime = interval; 2502 timeout_blocktime = interval;
1565} 2503}
1566 2504
1567void 2505void
1568ev_set_userdata (EV_P_ void *data) 2506ev_set_userdata (EV_P_ void *data) EV_THROW
1569{ 2507{
1570 userdata = data; 2508 userdata = data;
1571} 2509}
1572 2510
1573void * 2511void *
1574ev_userdata (EV_P) 2512ev_userdata (EV_P) EV_THROW
1575{ 2513{
1576 return userdata; 2514 return userdata;
1577} 2515}
1578 2516
2517void
1579void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2518ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1580{ 2519{
1581 invoke_cb = invoke_pending_cb; 2520 invoke_cb = invoke_pending_cb;
1582} 2521}
1583 2522
2523void
1584void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2524ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1585{ 2525{
1586 release_cb = release; 2526 release_cb = release;
1587 acquire_cb = acquire; 2527 acquire_cb = acquire;
1588} 2528}
1589#endif 2529#endif
1590 2530
1591/* initialise a loop structure, must be zero-initialised */ 2531/* initialise a loop structure, must be zero-initialised */
1592static void noinline 2532static void noinline ecb_cold
1593loop_init (EV_P_ unsigned int flags) 2533loop_init (EV_P_ unsigned int flags) EV_THROW
1594{ 2534{
1595 if (!backend) 2535 if (!backend)
1596 { 2536 {
2537 origflags = flags;
2538
1597#if EV_USE_REALTIME 2539#if EV_USE_REALTIME
1598 if (!have_realtime) 2540 if (!have_realtime)
1599 { 2541 {
1600 struct timespec ts; 2542 struct timespec ts;
1601 2543
… …
1623 if (!(flags & EVFLAG_NOENV) 2565 if (!(flags & EVFLAG_NOENV)
1624 && !enable_secure () 2566 && !enable_secure ()
1625 && getenv ("LIBEV_FLAGS")) 2567 && getenv ("LIBEV_FLAGS"))
1626 flags = atoi (getenv ("LIBEV_FLAGS")); 2568 flags = atoi (getenv ("LIBEV_FLAGS"));
1627 2569
1628 ev_rt_now = ev_time (); 2570 ev_rt_now = ev_time ();
1629 mn_now = get_clock (); 2571 mn_now = get_clock ();
1630 now_floor = mn_now; 2572 now_floor = mn_now;
1631 rtmn_diff = ev_rt_now - mn_now; 2573 rtmn_diff = ev_rt_now - mn_now;
1632#if EV_MINIMAL < 2 2574#if EV_FEATURE_API
1633 invoke_cb = ev_invoke_pending; 2575 invoke_cb = ev_invoke_pending;
1634#endif 2576#endif
1635 2577
1636 io_blocktime = 0.; 2578 io_blocktime = 0.;
1637 timeout_blocktime = 0.; 2579 timeout_blocktime = 0.;
1638 backend = 0; 2580 backend = 0;
1639 backend_fd = -1; 2581 backend_fd = -1;
1640 sig_pending = 0; 2582 sig_pending = 0;
1641#if EV_ASYNC_ENABLE 2583#if EV_ASYNC_ENABLE
1642 async_pending = 0; 2584 async_pending = 0;
1643#endif 2585#endif
2586 pipe_write_skipped = 0;
2587 pipe_write_wanted = 0;
2588 evpipe [0] = -1;
2589 evpipe [1] = -1;
1644#if EV_USE_INOTIFY 2590#if EV_USE_INOTIFY
1645 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2591 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1646#endif 2592#endif
1647#if EV_USE_SIGNALFD 2593#if EV_USE_SIGNALFD
1648 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2594 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1649#endif 2595#endif
1650 2596
1651 if (!(flags & 0x0000ffffU)) 2597 if (!(flags & EVBACKEND_MASK))
1652 flags |= ev_recommended_backends (); 2598 flags |= ev_recommended_backends ();
1653 2599
2600#if EV_USE_IOCP
2601 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2602#endif
1654#if EV_USE_PORT 2603#if EV_USE_PORT
1655 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2604 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1656#endif 2605#endif
1657#if EV_USE_KQUEUE 2606#if EV_USE_KQUEUE
1658 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2607 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1675#endif 2624#endif
1676 } 2625 }
1677} 2626}
1678 2627
1679/* free up a loop structure */ 2628/* free up a loop structure */
1680static void noinline 2629void ecb_cold
1681loop_destroy (EV_P) 2630ev_loop_destroy (EV_P)
1682{ 2631{
1683 int i; 2632 int i;
2633
2634#if EV_MULTIPLICITY
2635 /* mimic free (0) */
2636 if (!EV_A)
2637 return;
2638#endif
2639
2640#if EV_CLEANUP_ENABLE
2641 /* queue cleanup watchers (and execute them) */
2642 if (expect_false (cleanupcnt))
2643 {
2644 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2645 EV_INVOKE_PENDING;
2646 }
2647#endif
2648
2649#if EV_CHILD_ENABLE
2650 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2651 {
2652 ev_ref (EV_A); /* child watcher */
2653 ev_signal_stop (EV_A_ &childev);
2654 }
2655#endif
1684 2656
1685 if (ev_is_active (&pipe_w)) 2657 if (ev_is_active (&pipe_w))
1686 { 2658 {
1687 /*ev_ref (EV_A);*/ 2659 /*ev_ref (EV_A);*/
1688 /*ev_io_stop (EV_A_ &pipe_w);*/ 2660 /*ev_io_stop (EV_A_ &pipe_w);*/
1689 2661
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]); 2662 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1698 EV_WIN32_CLOSE_FD (evpipe [1]); 2663 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1699 }
1700 } 2664 }
1701 2665
1702#if EV_USE_SIGNALFD 2666#if EV_USE_SIGNALFD
1703 if (ev_is_active (&sigfd_w)) 2667 if (ev_is_active (&sigfd_w))
1704 close (sigfd); 2668 close (sigfd);
… …
1710#endif 2674#endif
1711 2675
1712 if (backend_fd >= 0) 2676 if (backend_fd >= 0)
1713 close (backend_fd); 2677 close (backend_fd);
1714 2678
2679#if EV_USE_IOCP
2680 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2681#endif
1715#if EV_USE_PORT 2682#if EV_USE_PORT
1716 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2683 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1717#endif 2684#endif
1718#if EV_USE_KQUEUE 2685#if EV_USE_KQUEUE
1719 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2686 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1746 array_free (periodic, EMPTY); 2713 array_free (periodic, EMPTY);
1747#endif 2714#endif
1748#if EV_FORK_ENABLE 2715#if EV_FORK_ENABLE
1749 array_free (fork, EMPTY); 2716 array_free (fork, EMPTY);
1750#endif 2717#endif
2718#if EV_CLEANUP_ENABLE
2719 array_free (cleanup, EMPTY);
2720#endif
1751 array_free (prepare, EMPTY); 2721 array_free (prepare, EMPTY);
1752 array_free (check, EMPTY); 2722 array_free (check, EMPTY);
1753#if EV_ASYNC_ENABLE 2723#if EV_ASYNC_ENABLE
1754 array_free (async, EMPTY); 2724 array_free (async, EMPTY);
1755#endif 2725#endif
1756 2726
1757 backend = 0; 2727 backend = 0;
2728
2729#if EV_MULTIPLICITY
2730 if (ev_is_default_loop (EV_A))
2731#endif
2732 ev_default_loop_ptr = 0;
2733#if EV_MULTIPLICITY
2734 else
2735 ev_free (EV_A);
2736#endif
1758} 2737}
1759 2738
1760#if EV_USE_INOTIFY 2739#if EV_USE_INOTIFY
1761inline_size void infy_fork (EV_P); 2740inline_size void infy_fork (EV_P);
1762#endif 2741#endif
… …
1775#endif 2754#endif
1776#if EV_USE_INOTIFY 2755#if EV_USE_INOTIFY
1777 infy_fork (EV_A); 2756 infy_fork (EV_A);
1778#endif 2757#endif
1779 2758
2759#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1780 if (ev_is_active (&pipe_w)) 2760 if (ev_is_active (&pipe_w))
1781 { 2761 {
1782 /* this "locks" the handlers against writing to the pipe */ 2762 /* 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 2763
1789 ev_ref (EV_A); 2764 ev_ref (EV_A);
1790 ev_io_stop (EV_A_ &pipe_w); 2765 ev_io_stop (EV_A_ &pipe_w);
1791 2766
1792#if EV_USE_EVENTFD
1793 if (evfd >= 0)
1794 close (evfd);
1795#endif
1796
1797 if (evpipe [0] >= 0) 2767 if (evpipe [0] >= 0)
1798 {
1799 EV_WIN32_CLOSE_FD (evpipe [0]); 2768 EV_WIN32_CLOSE_FD (evpipe [0]);
1800 EV_WIN32_CLOSE_FD (evpipe [1]);
1801 }
1802 2769
1803 evpipe_init (EV_A); 2770 evpipe_init (EV_A);
1804 /* now iterate over everything, in case we missed something */ 2771 /* iterate over everything, in case we missed something before */
1805 pipecb (EV_A_ &pipe_w, EV_READ); 2772 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1806 } 2773 }
2774#endif
1807 2775
1808 postfork = 0; 2776 postfork = 0;
1809} 2777}
1810 2778
1811#if EV_MULTIPLICITY 2779#if EV_MULTIPLICITY
1812 2780
1813struct ev_loop * 2781struct ev_loop * ecb_cold
1814ev_loop_new (unsigned int flags) 2782ev_loop_new (unsigned int flags) EV_THROW
1815{ 2783{
1816 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2784 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1817 2785
1818 memset (EV_A, 0, sizeof (struct ev_loop)); 2786 memset (EV_A, 0, sizeof (struct ev_loop));
1819 loop_init (EV_A_ flags); 2787 loop_init (EV_A_ flags);
1820 2788
1821 if (ev_backend (EV_A)) 2789 if (ev_backend (EV_A))
1822 return EV_A; 2790 return EV_A;
1823 2791
2792 ev_free (EV_A);
1824 return 0; 2793 return 0;
1825} 2794}
1826 2795
1827void
1828ev_loop_destroy (EV_P)
1829{
1830 loop_destroy (EV_A);
1831 ev_free (loop);
1832}
1833
1834void
1835ev_loop_fork (EV_P)
1836{
1837 postfork = 1; /* must be in line with ev_default_fork */
1838}
1839#endif /* multiplicity */ 2796#endif /* multiplicity */
1840 2797
1841#if EV_VERIFY 2798#if EV_VERIFY
1842static void noinline 2799static void noinline ecb_cold
1843verify_watcher (EV_P_ W w) 2800verify_watcher (EV_P_ W w)
1844{ 2801{
1845 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2802 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1846 2803
1847 if (w->pending) 2804 if (w->pending)
1848 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2805 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1849} 2806}
1850 2807
1851static void noinline 2808static void noinline ecb_cold
1852verify_heap (EV_P_ ANHE *heap, int N) 2809verify_heap (EV_P_ ANHE *heap, int N)
1853{ 2810{
1854 int i; 2811 int i;
1855 2812
1856 for (i = HEAP0; i < N + HEAP0; ++i) 2813 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1861 2818
1862 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2819 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1863 } 2820 }
1864} 2821}
1865 2822
1866static void noinline 2823static void noinline ecb_cold
1867array_verify (EV_P_ W *ws, int cnt) 2824array_verify (EV_P_ W *ws, int cnt)
1868{ 2825{
1869 while (cnt--) 2826 while (cnt--)
1870 { 2827 {
1871 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2828 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1872 verify_watcher (EV_A_ ws [cnt]); 2829 verify_watcher (EV_A_ ws [cnt]);
1873 } 2830 }
1874} 2831}
1875#endif 2832#endif
1876 2833
1877#if EV_MINIMAL < 2 2834#if EV_FEATURE_API
1878void 2835void ecb_cold
1879ev_loop_verify (EV_P) 2836ev_verify (EV_P) EV_THROW
1880{ 2837{
1881#if EV_VERIFY 2838#if EV_VERIFY
1882 int i; 2839 int i;
1883 WL w; 2840 WL w, w2;
1884 2841
1885 assert (activecnt >= -1); 2842 assert (activecnt >= -1);
1886 2843
1887 assert (fdchangemax >= fdchangecnt); 2844 assert (fdchangemax >= fdchangecnt);
1888 for (i = 0; i < fdchangecnt; ++i) 2845 for (i = 0; i < fdchangecnt; ++i)
1889 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2846 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1890 2847
1891 assert (anfdmax >= 0); 2848 assert (anfdmax >= 0);
1892 for (i = 0; i < anfdmax; ++i) 2849 for (i = 0; i < anfdmax; ++i)
2850 {
2851 int j = 0;
2852
1893 for (w = anfds [i].head; w; w = w->next) 2853 for (w = w2 = anfds [i].head; w; w = w->next)
1894 { 2854 {
1895 verify_watcher (EV_A_ (W)w); 2855 verify_watcher (EV_A_ (W)w);
2856
2857 if (j++ & 1)
2858 {
2859 assert (("libev: io watcher list contains a loop", w != w2));
2860 w2 = w2->next;
2861 }
2862
1896 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2863 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1897 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2864 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1898 } 2865 }
2866 }
1899 2867
1900 assert (timermax >= timercnt); 2868 assert (timermax >= timercnt);
1901 verify_heap (EV_A_ timers, timercnt); 2869 verify_heap (EV_A_ timers, timercnt);
1902 2870
1903#if EV_PERIODIC_ENABLE 2871#if EV_PERIODIC_ENABLE
… …
1918#if EV_FORK_ENABLE 2886#if EV_FORK_ENABLE
1919 assert (forkmax >= forkcnt); 2887 assert (forkmax >= forkcnt);
1920 array_verify (EV_A_ (W *)forks, forkcnt); 2888 array_verify (EV_A_ (W *)forks, forkcnt);
1921#endif 2889#endif
1922 2890
2891#if EV_CLEANUP_ENABLE
2892 assert (cleanupmax >= cleanupcnt);
2893 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2894#endif
2895
1923#if EV_ASYNC_ENABLE 2896#if EV_ASYNC_ENABLE
1924 assert (asyncmax >= asynccnt); 2897 assert (asyncmax >= asynccnt);
1925 array_verify (EV_A_ (W *)asyncs, asynccnt); 2898 array_verify (EV_A_ (W *)asyncs, asynccnt);
1926#endif 2899#endif
1927 2900
2901#if EV_PREPARE_ENABLE
1928 assert (preparemax >= preparecnt); 2902 assert (preparemax >= preparecnt);
1929 array_verify (EV_A_ (W *)prepares, preparecnt); 2903 array_verify (EV_A_ (W *)prepares, preparecnt);
2904#endif
1930 2905
2906#if EV_CHECK_ENABLE
1931 assert (checkmax >= checkcnt); 2907 assert (checkmax >= checkcnt);
1932 array_verify (EV_A_ (W *)checks, checkcnt); 2908 array_verify (EV_A_ (W *)checks, checkcnt);
2909#endif
1933 2910
1934# if 0 2911# if 0
1935#if EV_CHILD_ENABLE 2912#if EV_CHILD_ENABLE
1936 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2913 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1937 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2914 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1938#endif 2915#endif
1939# endif 2916# endif
1940#endif 2917#endif
1941} 2918}
1942#endif 2919#endif
1943 2920
1944#if EV_MULTIPLICITY 2921#if EV_MULTIPLICITY
1945struct ev_loop * 2922struct ev_loop * ecb_cold
1946ev_default_loop_init (unsigned int flags)
1947#else 2923#else
1948int 2924int
2925#endif
1949ev_default_loop (unsigned int flags) 2926ev_default_loop (unsigned int flags) EV_THROW
1950#endif
1951{ 2927{
1952 if (!ev_default_loop_ptr) 2928 if (!ev_default_loop_ptr)
1953 { 2929 {
1954#if EV_MULTIPLICITY 2930#if EV_MULTIPLICITY
1955 EV_P = ev_default_loop_ptr = &default_loop_struct; 2931 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1974 2950
1975 return ev_default_loop_ptr; 2951 return ev_default_loop_ptr;
1976} 2952}
1977 2953
1978void 2954void
1979ev_default_destroy (void) 2955ev_loop_fork (EV_P) EV_THROW
1980{ 2956{
1981#if EV_MULTIPLICITY 2957 postfork = 1;
1982 EV_P = ev_default_loop_ptr;
1983#endif
1984
1985 ev_default_loop_ptr = 0;
1986
1987#if EV_CHILD_ENABLE
1988 ev_ref (EV_A); /* child watcher */
1989 ev_signal_stop (EV_A_ &childev);
1990#endif
1991
1992 loop_destroy (EV_A);
1993}
1994
1995void
1996ev_default_fork (void)
1997{
1998#if EV_MULTIPLICITY
1999 EV_P = ev_default_loop_ptr;
2000#endif
2001
2002 postfork = 1; /* must be in line with ev_loop_fork */
2003} 2958}
2004 2959
2005/*****************************************************************************/ 2960/*****************************************************************************/
2006 2961
2007void 2962void
… …
2009{ 2964{
2010 EV_CB_INVOKE ((W)w, revents); 2965 EV_CB_INVOKE ((W)w, revents);
2011} 2966}
2012 2967
2013unsigned int 2968unsigned int
2014ev_pending_count (EV_P) 2969ev_pending_count (EV_P) EV_THROW
2015{ 2970{
2016 int pri; 2971 int pri;
2017 unsigned int count = 0; 2972 unsigned int count = 0;
2018 2973
2019 for (pri = NUMPRI; pri--; ) 2974 for (pri = NUMPRI; pri--; )
… …
2023} 2978}
2024 2979
2025void noinline 2980void noinline
2026ev_invoke_pending (EV_P) 2981ev_invoke_pending (EV_P)
2027{ 2982{
2028 int pri; 2983 pendingpri = NUMPRI;
2029 2984
2030 for (pri = NUMPRI; pri--; ) 2985 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2986 {
2987 --pendingpri;
2988
2031 while (pendingcnt [pri]) 2989 while (pendingcnt [pendingpri])
2032 { 2990 {
2033 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2991 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2034 2992
2035 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2036 /* ^ this is no longer true, as pending_w could be here */
2037
2038 p->w->pending = 0; 2993 p->w->pending = 0;
2039 EV_CB_INVOKE (p->w, p->events); 2994 EV_CB_INVOKE (p->w, p->events);
2040 EV_FREQUENT_CHECK; 2995 EV_FREQUENT_CHECK;
2041 } 2996 }
2997 }
2042} 2998}
2043 2999
2044#if EV_IDLE_ENABLE 3000#if EV_IDLE_ENABLE
2045/* make idle watchers pending. this handles the "call-idle */ 3001/* make idle watchers pending. this handles the "call-idle */
2046/* only when higher priorities are idle" logic */ 3002/* only when higher priorities are idle" logic */
… …
2098 EV_FREQUENT_CHECK; 3054 EV_FREQUENT_CHECK;
2099 feed_reverse (EV_A_ (W)w); 3055 feed_reverse (EV_A_ (W)w);
2100 } 3056 }
2101 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3057 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2102 3058
2103 feed_reverse_done (EV_A_ EV_TIMEOUT); 3059 feed_reverse_done (EV_A_ EV_TIMER);
2104 } 3060 }
2105} 3061}
2106 3062
2107#if EV_PERIODIC_ENABLE 3063#if EV_PERIODIC_ENABLE
3064
3065static void noinline
3066periodic_recalc (EV_P_ ev_periodic *w)
3067{
3068 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3069 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3070
3071 /* the above almost always errs on the low side */
3072 while (at <= ev_rt_now)
3073 {
3074 ev_tstamp nat = at + w->interval;
3075
3076 /* when resolution fails us, we use ev_rt_now */
3077 if (expect_false (nat == at))
3078 {
3079 at = ev_rt_now;
3080 break;
3081 }
3082
3083 at = nat;
3084 }
3085
3086 ev_at (w) = at;
3087}
3088
2108/* make periodics pending */ 3089/* make periodics pending */
2109inline_size void 3090inline_size void
2110periodics_reify (EV_P) 3091periodics_reify (EV_P)
2111{ 3092{
2112 EV_FREQUENT_CHECK; 3093 EV_FREQUENT_CHECK;
2113 3094
2114 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3095 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2115 { 3096 {
2116 int feed_count = 0;
2117
2118 do 3097 do
2119 { 3098 {
2120 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3099 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2121 3100
2122 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3101 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2131 ANHE_at_cache (periodics [HEAP0]); 3110 ANHE_at_cache (periodics [HEAP0]);
2132 downheap (periodics, periodiccnt, HEAP0); 3111 downheap (periodics, periodiccnt, HEAP0);
2133 } 3112 }
2134 else if (w->interval) 3113 else if (w->interval)
2135 { 3114 {
2136 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3115 periodic_recalc (EV_A_ w);
2137 /* if next trigger time is not sufficiently in the future, put it there */
2138 /* this might happen because of floating point inexactness */
2139 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2140 {
2141 ev_at (w) += w->interval;
2142
2143 /* if interval is unreasonably low we might still have a time in the past */
2144 /* so correct this. this will make the periodic very inexact, but the user */
2145 /* has effectively asked to get triggered more often than possible */
2146 if (ev_at (w) < ev_rt_now)
2147 ev_at (w) = ev_rt_now;
2148 }
2149
2150 ANHE_at_cache (periodics [HEAP0]); 3116 ANHE_at_cache (periodics [HEAP0]);
2151 downheap (periodics, periodiccnt, HEAP0); 3117 downheap (periodics, periodiccnt, HEAP0);
2152 } 3118 }
2153 else 3119 else
2154 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3120 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2161 feed_reverse_done (EV_A_ EV_PERIODIC); 3127 feed_reverse_done (EV_A_ EV_PERIODIC);
2162 } 3128 }
2163} 3129}
2164 3130
2165/* simply recalculate all periodics */ 3131/* simply recalculate all periodics */
2166/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3132/* TODO: maybe ensure that at least one event happens when jumping forward? */
2167static void noinline 3133static void noinline ecb_cold
2168periodics_reschedule (EV_P) 3134periodics_reschedule (EV_P)
2169{ 3135{
2170 int i; 3136 int i;
2171 3137
2172 /* adjust periodics after time jump */ 3138 /* adjust periodics after time jump */
… …
2175 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3141 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2176 3142
2177 if (w->reschedule_cb) 3143 if (w->reschedule_cb)
2178 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3144 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2179 else if (w->interval) 3145 else if (w->interval)
2180 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3146 periodic_recalc (EV_A_ w);
2181 3147
2182 ANHE_at_cache (periodics [i]); 3148 ANHE_at_cache (periodics [i]);
2183 } 3149 }
2184 3150
2185 reheap (periodics, periodiccnt); 3151 reheap (periodics, periodiccnt);
2186} 3152}
2187#endif 3153#endif
2188 3154
2189/* adjust all timers by a given offset */ 3155/* adjust all timers by a given offset */
2190static void noinline 3156static void noinline ecb_cold
2191timers_reschedule (EV_P_ ev_tstamp adjust) 3157timers_reschedule (EV_P_ ev_tstamp adjust)
2192{ 3158{
2193 int i; 3159 int i;
2194 3160
2195 for (i = 0; i < timercnt; ++i) 3161 for (i = 0; i < timercnt; ++i)
… …
2232 * doesn't hurt either as we only do this on time-jumps or 3198 * doesn't hurt either as we only do this on time-jumps or
2233 * in the unlikely event of having been preempted here. 3199 * in the unlikely event of having been preempted here.
2234 */ 3200 */
2235 for (i = 4; --i; ) 3201 for (i = 4; --i; )
2236 { 3202 {
3203 ev_tstamp diff;
2237 rtmn_diff = ev_rt_now - mn_now; 3204 rtmn_diff = ev_rt_now - mn_now;
2238 3205
3206 diff = odiff - rtmn_diff;
3207
2239 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3208 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2240 return; /* all is well */ 3209 return; /* all is well */
2241 3210
2242 ev_rt_now = ev_time (); 3211 ev_rt_now = ev_time ();
2243 mn_now = get_clock (); 3212 mn_now = get_clock ();
2244 now_floor = mn_now; 3213 now_floor = mn_now;
… …
2266 3235
2267 mn_now = ev_rt_now; 3236 mn_now = ev_rt_now;
2268 } 3237 }
2269} 3238}
2270 3239
2271void 3240int
2272ev_loop (EV_P_ int flags) 3241ev_run (EV_P_ int flags)
2273{ 3242{
2274#if EV_MINIMAL < 2 3243#if EV_FEATURE_API
2275 ++loop_depth; 3244 ++loop_depth;
2276#endif 3245#endif
2277 3246
2278 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3247 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2279 3248
2280 loop_done = EVUNLOOP_CANCEL; 3249 loop_done = EVBREAK_CANCEL;
2281 3250
2282 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3251 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2283 3252
2284 do 3253 do
2285 { 3254 {
2286#if EV_VERIFY >= 2 3255#if EV_VERIFY >= 2
2287 ev_loop_verify (EV_A); 3256 ev_verify (EV_A);
2288#endif 3257#endif
2289 3258
2290#ifndef _WIN32 3259#ifndef _WIN32
2291 if (expect_false (curpid)) /* penalise the forking check even more */ 3260 if (expect_false (curpid)) /* penalise the forking check even more */
2292 if (expect_false (getpid () != curpid)) 3261 if (expect_false (getpid () != curpid))
… …
2304 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3273 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2305 EV_INVOKE_PENDING; 3274 EV_INVOKE_PENDING;
2306 } 3275 }
2307#endif 3276#endif
2308 3277
3278#if EV_PREPARE_ENABLE
2309 /* queue prepare watchers (and execute them) */ 3279 /* queue prepare watchers (and execute them) */
2310 if (expect_false (preparecnt)) 3280 if (expect_false (preparecnt))
2311 { 3281 {
2312 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3282 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2313 EV_INVOKE_PENDING; 3283 EV_INVOKE_PENDING;
2314 } 3284 }
3285#endif
2315 3286
2316 if (expect_false (loop_done)) 3287 if (expect_false (loop_done))
2317 break; 3288 break;
2318 3289
2319 /* we might have forked, so reify kernel state if necessary */ 3290 /* we might have forked, so reify kernel state if necessary */
… …
2326 /* calculate blocking time */ 3297 /* calculate blocking time */
2327 { 3298 {
2328 ev_tstamp waittime = 0.; 3299 ev_tstamp waittime = 0.;
2329 ev_tstamp sleeptime = 0.; 3300 ev_tstamp sleeptime = 0.;
2330 3301
3302 /* remember old timestamp for io_blocktime calculation */
3303 ev_tstamp prev_mn_now = mn_now;
3304
3305 /* update time to cancel out callback processing overhead */
3306 time_update (EV_A_ 1e100);
3307
3308 /* from now on, we want a pipe-wake-up */
3309 pipe_write_wanted = 1;
3310
3311 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3312
2331 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3313 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2332 { 3314 {
2333 /* remember old timestamp for io_blocktime calculation */
2334 ev_tstamp prev_mn_now = mn_now;
2335
2336 /* update time to cancel out callback processing overhead */
2337 time_update (EV_A_ 1e100);
2338
2339 waittime = MAX_BLOCKTIME; 3315 waittime = MAX_BLOCKTIME;
2340 3316
2341 if (timercnt) 3317 if (timercnt)
2342 { 3318 {
2343 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3319 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2344 if (waittime > to) waittime = to; 3320 if (waittime > to) waittime = to;
2345 } 3321 }
2346 3322
2347#if EV_PERIODIC_ENABLE 3323#if EV_PERIODIC_ENABLE
2348 if (periodiccnt) 3324 if (periodiccnt)
2349 { 3325 {
2350 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3326 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2351 if (waittime > to) waittime = to; 3327 if (waittime > to) waittime = to;
2352 } 3328 }
2353#endif 3329#endif
2354 3330
2355 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3331 /* don't let timeouts decrease the waittime below timeout_blocktime */
2356 if (expect_false (waittime < timeout_blocktime)) 3332 if (expect_false (waittime < timeout_blocktime))
2357 waittime = timeout_blocktime; 3333 waittime = timeout_blocktime;
3334
3335 /* at this point, we NEED to wait, so we have to ensure */
3336 /* to pass a minimum nonzero value to the backend */
3337 if (expect_false (waittime < backend_mintime))
3338 waittime = backend_mintime;
2358 3339
2359 /* extra check because io_blocktime is commonly 0 */ 3340 /* extra check because io_blocktime is commonly 0 */
2360 if (expect_false (io_blocktime)) 3341 if (expect_false (io_blocktime))
2361 { 3342 {
2362 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3343 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2363 3344
2364 if (sleeptime > waittime - backend_fudge) 3345 if (sleeptime > waittime - backend_mintime)
2365 sleeptime = waittime - backend_fudge; 3346 sleeptime = waittime - backend_mintime;
2366 3347
2367 if (expect_true (sleeptime > 0.)) 3348 if (expect_true (sleeptime > 0.))
2368 { 3349 {
2369 ev_sleep (sleeptime); 3350 ev_sleep (sleeptime);
2370 waittime -= sleeptime; 3351 waittime -= sleeptime;
2371 } 3352 }
2372 } 3353 }
2373 } 3354 }
2374 3355
2375#if EV_MINIMAL < 2 3356#if EV_FEATURE_API
2376 ++loop_count; 3357 ++loop_count;
2377#endif 3358#endif
2378 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3359 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2379 backend_poll (EV_A_ waittime); 3360 backend_poll (EV_A_ waittime);
2380 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3361 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3362
3363 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3364
3365 ECB_MEMORY_FENCE_ACQUIRE;
3366 if (pipe_write_skipped)
3367 {
3368 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3369 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3370 }
3371
2381 3372
2382 /* update ev_rt_now, do magic */ 3373 /* update ev_rt_now, do magic */
2383 time_update (EV_A_ waittime + sleeptime); 3374 time_update (EV_A_ waittime + sleeptime);
2384 } 3375 }
2385 3376
… …
2392#if EV_IDLE_ENABLE 3383#if EV_IDLE_ENABLE
2393 /* queue idle watchers unless other events are pending */ 3384 /* queue idle watchers unless other events are pending */
2394 idle_reify (EV_A); 3385 idle_reify (EV_A);
2395#endif 3386#endif
2396 3387
3388#if EV_CHECK_ENABLE
2397 /* queue check watchers, to be executed first */ 3389 /* queue check watchers, to be executed first */
2398 if (expect_false (checkcnt)) 3390 if (expect_false (checkcnt))
2399 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3391 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3392#endif
2400 3393
2401 EV_INVOKE_PENDING; 3394 EV_INVOKE_PENDING;
2402 } 3395 }
2403 while (expect_true ( 3396 while (expect_true (
2404 activecnt 3397 activecnt
2405 && !loop_done 3398 && !loop_done
2406 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3399 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2407 )); 3400 ));
2408 3401
2409 if (loop_done == EVUNLOOP_ONE) 3402 if (loop_done == EVBREAK_ONE)
2410 loop_done = EVUNLOOP_CANCEL; 3403 loop_done = EVBREAK_CANCEL;
2411 3404
2412#if EV_MINIMAL < 2 3405#if EV_FEATURE_API
2413 --loop_depth; 3406 --loop_depth;
2414#endif 3407#endif
3408
3409 return activecnt;
2415} 3410}
2416 3411
2417void 3412void
2418ev_unloop (EV_P_ int how) 3413ev_break (EV_P_ int how) EV_THROW
2419{ 3414{
2420 loop_done = how; 3415 loop_done = how;
2421} 3416}
2422 3417
2423void 3418void
2424ev_ref (EV_P) 3419ev_ref (EV_P) EV_THROW
2425{ 3420{
2426 ++activecnt; 3421 ++activecnt;
2427} 3422}
2428 3423
2429void 3424void
2430ev_unref (EV_P) 3425ev_unref (EV_P) EV_THROW
2431{ 3426{
2432 --activecnt; 3427 --activecnt;
2433} 3428}
2434 3429
2435void 3430void
2436ev_now_update (EV_P) 3431ev_now_update (EV_P) EV_THROW
2437{ 3432{
2438 time_update (EV_A_ 1e100); 3433 time_update (EV_A_ 1e100);
2439} 3434}
2440 3435
2441void 3436void
2442ev_suspend (EV_P) 3437ev_suspend (EV_P) EV_THROW
2443{ 3438{
2444 ev_now_update (EV_A); 3439 ev_now_update (EV_A);
2445} 3440}
2446 3441
2447void 3442void
2448ev_resume (EV_P) 3443ev_resume (EV_P) EV_THROW
2449{ 3444{
2450 ev_tstamp mn_prev = mn_now; 3445 ev_tstamp mn_prev = mn_now;
2451 3446
2452 ev_now_update (EV_A); 3447 ev_now_update (EV_A);
2453 timers_reschedule (EV_A_ mn_now - mn_prev); 3448 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2492 w->pending = 0; 3487 w->pending = 0;
2493 } 3488 }
2494} 3489}
2495 3490
2496int 3491int
2497ev_clear_pending (EV_P_ void *w) 3492ev_clear_pending (EV_P_ void *w) EV_THROW
2498{ 3493{
2499 W w_ = (W)w; 3494 W w_ = (W)w;
2500 int pending = w_->pending; 3495 int pending = w_->pending;
2501 3496
2502 if (expect_true (pending)) 3497 if (expect_true (pending))
… …
2535} 3530}
2536 3531
2537/*****************************************************************************/ 3532/*****************************************************************************/
2538 3533
2539void noinline 3534void noinline
2540ev_io_start (EV_P_ ev_io *w) 3535ev_io_start (EV_P_ ev_io *w) EV_THROW
2541{ 3536{
2542 int fd = w->fd; 3537 int fd = w->fd;
2543 3538
2544 if (expect_false (ev_is_active (w))) 3539 if (expect_false (ev_is_active (w)))
2545 return; 3540 return;
… …
2551 3546
2552 ev_start (EV_A_ (W)w, 1); 3547 ev_start (EV_A_ (W)w, 1);
2553 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3548 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2554 wlist_add (&anfds[fd].head, (WL)w); 3549 wlist_add (&anfds[fd].head, (WL)w);
2555 3550
3551 /* common bug, apparently */
3552 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3553
2556 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3554 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2557 w->events &= ~EV__IOFDSET; 3555 w->events &= ~EV__IOFDSET;
2558 3556
2559 EV_FREQUENT_CHECK; 3557 EV_FREQUENT_CHECK;
2560} 3558}
2561 3559
2562void noinline 3560void noinline
2563ev_io_stop (EV_P_ ev_io *w) 3561ev_io_stop (EV_P_ ev_io *w) EV_THROW
2564{ 3562{
2565 clear_pending (EV_A_ (W)w); 3563 clear_pending (EV_A_ (W)w);
2566 if (expect_false (!ev_is_active (w))) 3564 if (expect_false (!ev_is_active (w)))
2567 return; 3565 return;
2568 3566
… …
2571 EV_FREQUENT_CHECK; 3569 EV_FREQUENT_CHECK;
2572 3570
2573 wlist_del (&anfds[w->fd].head, (WL)w); 3571 wlist_del (&anfds[w->fd].head, (WL)w);
2574 ev_stop (EV_A_ (W)w); 3572 ev_stop (EV_A_ (W)w);
2575 3573
2576 fd_change (EV_A_ w->fd, 1); 3574 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2577 3575
2578 EV_FREQUENT_CHECK; 3576 EV_FREQUENT_CHECK;
2579} 3577}
2580 3578
2581void noinline 3579void noinline
2582ev_timer_start (EV_P_ ev_timer *w) 3580ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2583{ 3581{
2584 if (expect_false (ev_is_active (w))) 3582 if (expect_false (ev_is_active (w)))
2585 return; 3583 return;
2586 3584
2587 ev_at (w) += mn_now; 3585 ev_at (w) += mn_now;
… …
2601 3599
2602 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3600 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2603} 3601}
2604 3602
2605void noinline 3603void noinline
2606ev_timer_stop (EV_P_ ev_timer *w) 3604ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2607{ 3605{
2608 clear_pending (EV_A_ (W)w); 3606 clear_pending (EV_A_ (W)w);
2609 if (expect_false (!ev_is_active (w))) 3607 if (expect_false (!ev_is_active (w)))
2610 return; 3608 return;
2611 3609
… …
2631 3629
2632 EV_FREQUENT_CHECK; 3630 EV_FREQUENT_CHECK;
2633} 3631}
2634 3632
2635void noinline 3633void noinline
2636ev_timer_again (EV_P_ ev_timer *w) 3634ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2637{ 3635{
2638 EV_FREQUENT_CHECK; 3636 EV_FREQUENT_CHECK;
3637
3638 clear_pending (EV_A_ (W)w);
2639 3639
2640 if (ev_is_active (w)) 3640 if (ev_is_active (w))
2641 { 3641 {
2642 if (w->repeat) 3642 if (w->repeat)
2643 { 3643 {
… …
2656 3656
2657 EV_FREQUENT_CHECK; 3657 EV_FREQUENT_CHECK;
2658} 3658}
2659 3659
2660ev_tstamp 3660ev_tstamp
2661ev_timer_remaining (EV_P_ ev_timer *w) 3661ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2662{ 3662{
2663 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3663 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2664} 3664}
2665 3665
2666#if EV_PERIODIC_ENABLE 3666#if EV_PERIODIC_ENABLE
2667void noinline 3667void noinline
2668ev_periodic_start (EV_P_ ev_periodic *w) 3668ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2669{ 3669{
2670 if (expect_false (ev_is_active (w))) 3670 if (expect_false (ev_is_active (w)))
2671 return; 3671 return;
2672 3672
2673 if (w->reschedule_cb) 3673 if (w->reschedule_cb)
2674 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3674 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2675 else if (w->interval) 3675 else if (w->interval)
2676 { 3676 {
2677 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3677 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2678 /* this formula differs from the one in periodic_reify because we do not always round up */ 3678 periodic_recalc (EV_A_ w);
2679 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2680 } 3679 }
2681 else 3680 else
2682 ev_at (w) = w->offset; 3681 ev_at (w) = w->offset;
2683 3682
2684 EV_FREQUENT_CHECK; 3683 EV_FREQUENT_CHECK;
… …
2694 3693
2695 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3694 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2696} 3695}
2697 3696
2698void noinline 3697void noinline
2699ev_periodic_stop (EV_P_ ev_periodic *w) 3698ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2700{ 3699{
2701 clear_pending (EV_A_ (W)w); 3700 clear_pending (EV_A_ (W)w);
2702 if (expect_false (!ev_is_active (w))) 3701 if (expect_false (!ev_is_active (w)))
2703 return; 3702 return;
2704 3703
… …
2722 3721
2723 EV_FREQUENT_CHECK; 3722 EV_FREQUENT_CHECK;
2724} 3723}
2725 3724
2726void noinline 3725void noinline
2727ev_periodic_again (EV_P_ ev_periodic *w) 3726ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2728{ 3727{
2729 /* TODO: use adjustheap and recalculation */ 3728 /* TODO: use adjustheap and recalculation */
2730 ev_periodic_stop (EV_A_ w); 3729 ev_periodic_stop (EV_A_ w);
2731 ev_periodic_start (EV_A_ w); 3730 ev_periodic_start (EV_A_ w);
2732} 3731}
… …
2737#endif 3736#endif
2738 3737
2739#if EV_SIGNAL_ENABLE 3738#if EV_SIGNAL_ENABLE
2740 3739
2741void noinline 3740void noinline
2742ev_signal_start (EV_P_ ev_signal *w) 3741ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2743{ 3742{
2744 if (expect_false (ev_is_active (w))) 3743 if (expect_false (ev_is_active (w)))
2745 return; 3744 return;
2746 3745
2747 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3746 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2749#if EV_MULTIPLICITY 3748#if EV_MULTIPLICITY
2750 assert (("libev: a signal must not be attached to two different loops", 3749 assert (("libev: a signal must not be attached to two different loops",
2751 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3750 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2752 3751
2753 signals [w->signum - 1].loop = EV_A; 3752 signals [w->signum - 1].loop = EV_A;
3753 ECB_MEMORY_FENCE_RELEASE;
2754#endif 3754#endif
2755 3755
2756 EV_FREQUENT_CHECK; 3756 EV_FREQUENT_CHECK;
2757 3757
2758#if EV_USE_SIGNALFD 3758#if EV_USE_SIGNALFD
… …
2805 sa.sa_handler = ev_sighandler; 3805 sa.sa_handler = ev_sighandler;
2806 sigfillset (&sa.sa_mask); 3806 sigfillset (&sa.sa_mask);
2807 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3807 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2808 sigaction (w->signum, &sa, 0); 3808 sigaction (w->signum, &sa, 0);
2809 3809
3810 if (origflags & EVFLAG_NOSIGMASK)
3811 {
2810 sigemptyset (&sa.sa_mask); 3812 sigemptyset (&sa.sa_mask);
2811 sigaddset (&sa.sa_mask, w->signum); 3813 sigaddset (&sa.sa_mask, w->signum);
2812 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3814 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3815 }
2813#endif 3816#endif
2814 } 3817 }
2815 3818
2816 EV_FREQUENT_CHECK; 3819 EV_FREQUENT_CHECK;
2817} 3820}
2818 3821
2819void noinline 3822void noinline
2820ev_signal_stop (EV_P_ ev_signal *w) 3823ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2821{ 3824{
2822 clear_pending (EV_A_ (W)w); 3825 clear_pending (EV_A_ (W)w);
2823 if (expect_false (!ev_is_active (w))) 3826 if (expect_false (!ev_is_active (w)))
2824 return; 3827 return;
2825 3828
… …
2856#endif 3859#endif
2857 3860
2858#if EV_CHILD_ENABLE 3861#if EV_CHILD_ENABLE
2859 3862
2860void 3863void
2861ev_child_start (EV_P_ ev_child *w) 3864ev_child_start (EV_P_ ev_child *w) EV_THROW
2862{ 3865{
2863#if EV_MULTIPLICITY 3866#if EV_MULTIPLICITY
2864 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3867 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2865#endif 3868#endif
2866 if (expect_false (ev_is_active (w))) 3869 if (expect_false (ev_is_active (w)))
2867 return; 3870 return;
2868 3871
2869 EV_FREQUENT_CHECK; 3872 EV_FREQUENT_CHECK;
2870 3873
2871 ev_start (EV_A_ (W)w, 1); 3874 ev_start (EV_A_ (W)w, 1);
2872 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3875 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2873 3876
2874 EV_FREQUENT_CHECK; 3877 EV_FREQUENT_CHECK;
2875} 3878}
2876 3879
2877void 3880void
2878ev_child_stop (EV_P_ ev_child *w) 3881ev_child_stop (EV_P_ ev_child *w) EV_THROW
2879{ 3882{
2880 clear_pending (EV_A_ (W)w); 3883 clear_pending (EV_A_ (W)w);
2881 if (expect_false (!ev_is_active (w))) 3884 if (expect_false (!ev_is_active (w)))
2882 return; 3885 return;
2883 3886
2884 EV_FREQUENT_CHECK; 3887 EV_FREQUENT_CHECK;
2885 3888
2886 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3889 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2887 ev_stop (EV_A_ (W)w); 3890 ev_stop (EV_A_ (W)w);
2888 3891
2889 EV_FREQUENT_CHECK; 3892 EV_FREQUENT_CHECK;
2890} 3893}
2891 3894
… …
2910# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3913# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2911 3914
2912static void noinline 3915static void noinline
2913infy_add (EV_P_ ev_stat *w) 3916infy_add (EV_P_ ev_stat *w)
2914{ 3917{
2915 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3918 w->wd = inotify_add_watch (fs_fd, w->path,
3919 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3920 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3921 | IN_DONT_FOLLOW | IN_MASK_ADD);
2916 3922
2917 if (w->wd >= 0) 3923 if (w->wd >= 0)
2918 { 3924 {
2919 struct statfs sfs; 3925 struct statfs sfs;
2920 3926
… …
2924 3930
2925 if (!fs_2625) 3931 if (!fs_2625)
2926 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3932 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2927 else if (!statfs (w->path, &sfs) 3933 else if (!statfs (w->path, &sfs)
2928 && (sfs.f_type == 0x1373 /* devfs */ 3934 && (sfs.f_type == 0x1373 /* devfs */
3935 || sfs.f_type == 0x4006 /* fat */
3936 || sfs.f_type == 0x4d44 /* msdos */
2929 || sfs.f_type == 0xEF53 /* ext2/3 */ 3937 || sfs.f_type == 0xEF53 /* ext2/3 */
3938 || sfs.f_type == 0x72b6 /* jffs2 */
3939 || sfs.f_type == 0x858458f6 /* ramfs */
3940 || sfs.f_type == 0x5346544e /* ntfs */
2930 || sfs.f_type == 0x3153464a /* jfs */ 3941 || sfs.f_type == 0x3153464a /* jfs */
3942 || sfs.f_type == 0x9123683e /* btrfs */
2931 || sfs.f_type == 0x52654973 /* reiser3 */ 3943 || sfs.f_type == 0x52654973 /* reiser3 */
2932 || sfs.f_type == 0x01021994 /* tempfs */ 3944 || sfs.f_type == 0x01021994 /* tmpfs */
2933 || sfs.f_type == 0x58465342 /* xfs */)) 3945 || sfs.f_type == 0x58465342 /* xfs */))
2934 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 3946 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
2935 else 3947 else
2936 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 3948 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2937 } 3949 }
… …
2958 if (!pend || pend == path) 3970 if (!pend || pend == path)
2959 break; 3971 break;
2960 3972
2961 *pend = 0; 3973 *pend = 0;
2962 w->wd = inotify_add_watch (fs_fd, path, mask); 3974 w->wd = inotify_add_watch (fs_fd, path, mask);
2963 } 3975 }
2964 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3976 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2965 } 3977 }
2966 } 3978 }
2967 3979
2968 if (w->wd >= 0) 3980 if (w->wd >= 0)
2969 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3981 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2970 3982
2971 /* now re-arm timer, if required */ 3983 /* now re-arm timer, if required */
2972 if (ev_is_active (&w->timer)) ev_ref (EV_A); 3984 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2973 ev_timer_again (EV_A_ &w->timer); 3985 ev_timer_again (EV_A_ &w->timer);
2974 if (ev_is_active (&w->timer)) ev_unref (EV_A); 3986 if (ev_is_active (&w->timer)) ev_unref (EV_A);
… …
2982 3994
2983 if (wd < 0) 3995 if (wd < 0)
2984 return; 3996 return;
2985 3997
2986 w->wd = -2; 3998 w->wd = -2;
2987 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3999 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2988 wlist_del (&fs_hash [slot].head, (WL)w); 4000 wlist_del (&fs_hash [slot].head, (WL)w);
2989 4001
2990 /* remove this watcher, if others are watching it, they will rearm */ 4002 /* remove this watcher, if others are watching it, they will rearm */
2991 inotify_rm_watch (fs_fd, wd); 4003 inotify_rm_watch (fs_fd, wd);
2992} 4004}
… …
2994static void noinline 4006static void noinline
2995infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4007infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2996{ 4008{
2997 if (slot < 0) 4009 if (slot < 0)
2998 /* overflow, need to check for all hash slots */ 4010 /* overflow, need to check for all hash slots */
2999 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4011 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3000 infy_wd (EV_A_ slot, wd, ev); 4012 infy_wd (EV_A_ slot, wd, ev);
3001 else 4013 else
3002 { 4014 {
3003 WL w_; 4015 WL w_;
3004 4016
3005 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4017 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
3006 { 4018 {
3007 ev_stat *w = (ev_stat *)w_; 4019 ev_stat *w = (ev_stat *)w_;
3008 w_ = w_->next; /* lets us remove this watcher and all before it */ 4020 w_ = w_->next; /* lets us remove this watcher and all before it */
3009 4021
3010 if (w->wd == wd || wd == -1) 4022 if (w->wd == wd || wd == -1)
3011 { 4023 {
3012 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4024 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
3013 { 4025 {
3014 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4026 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3015 w->wd = -1; 4027 w->wd = -1;
3016 infy_add (EV_A_ w); /* re-add, no matter what */ 4028 infy_add (EV_A_ w); /* re-add, no matter what */
3017 } 4029 }
3018 4030
3019 stat_timer_cb (EV_A_ &w->timer, 0); 4031 stat_timer_cb (EV_A_ &w->timer, 0);
… …
3035 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4047 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3036 ofs += sizeof (struct inotify_event) + ev->len; 4048 ofs += sizeof (struct inotify_event) + ev->len;
3037 } 4049 }
3038} 4050}
3039 4051
3040inline_size unsigned int
3041ev_linux_version (void)
3042{
3043 struct utsname buf;
3044 unsigned int v;
3045 int i;
3046 char *p = buf.release;
3047
3048 if (uname (&buf))
3049 return 0;
3050
3051 for (i = 3+1; --i; )
3052 {
3053 unsigned int c = 0;
3054
3055 for (;;)
3056 {
3057 if (*p >= '0' && *p <= '9')
3058 c = c * 10 + *p++ - '0';
3059 else
3060 {
3061 p += *p == '.';
3062 break;
3063 }
3064 }
3065
3066 v = (v << 8) | c;
3067 }
3068
3069 return v;
3070}
3071
3072inline_size void 4052inline_size void ecb_cold
3073ev_check_2625 (EV_P) 4053ev_check_2625 (EV_P)
3074{ 4054{
3075 /* kernels < 2.6.25 are borked 4055 /* kernels < 2.6.25 are borked
3076 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4056 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3077 */ 4057 */
… …
3082} 4062}
3083 4063
3084inline_size int 4064inline_size int
3085infy_newfd (void) 4065infy_newfd (void)
3086{ 4066{
3087#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4067#if defined IN_CLOEXEC && defined IN_NONBLOCK
3088 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4068 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3089 if (fd >= 0) 4069 if (fd >= 0)
3090 return fd; 4070 return fd;
3091#endif 4071#endif
3092 return inotify_init (); 4072 return inotify_init ();
… …
3133 ev_io_set (&fs_w, fs_fd, EV_READ); 4113 ev_io_set (&fs_w, fs_fd, EV_READ);
3134 ev_io_start (EV_A_ &fs_w); 4114 ev_io_start (EV_A_ &fs_w);
3135 ev_unref (EV_A); 4115 ev_unref (EV_A);
3136 } 4116 }
3137 4117
3138 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4118 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3139 { 4119 {
3140 WL w_ = fs_hash [slot].head; 4120 WL w_ = fs_hash [slot].head;
3141 fs_hash [slot].head = 0; 4121 fs_hash [slot].head = 0;
3142 4122
3143 while (w_) 4123 while (w_)
… …
3167#else 4147#else
3168# define EV_LSTAT(p,b) lstat (p, b) 4148# define EV_LSTAT(p,b) lstat (p, b)
3169#endif 4149#endif
3170 4150
3171void 4151void
3172ev_stat_stat (EV_P_ ev_stat *w) 4152ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3173{ 4153{
3174 if (lstat (w->path, &w->attr) < 0) 4154 if (lstat (w->path, &w->attr) < 0)
3175 w->attr.st_nlink = 0; 4155 w->attr.st_nlink = 0;
3176 else if (!w->attr.st_nlink) 4156 else if (!w->attr.st_nlink)
3177 w->attr.st_nlink = 1; 4157 w->attr.st_nlink = 1;
… …
3216 ev_feed_event (EV_A_ w, EV_STAT); 4196 ev_feed_event (EV_A_ w, EV_STAT);
3217 } 4197 }
3218} 4198}
3219 4199
3220void 4200void
3221ev_stat_start (EV_P_ ev_stat *w) 4201ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3222{ 4202{
3223 if (expect_false (ev_is_active (w))) 4203 if (expect_false (ev_is_active (w)))
3224 return; 4204 return;
3225 4205
3226 ev_stat_stat (EV_A_ w); 4206 ev_stat_stat (EV_A_ w);
… …
3247 4227
3248 EV_FREQUENT_CHECK; 4228 EV_FREQUENT_CHECK;
3249} 4229}
3250 4230
3251void 4231void
3252ev_stat_stop (EV_P_ ev_stat *w) 4232ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3253{ 4233{
3254 clear_pending (EV_A_ (W)w); 4234 clear_pending (EV_A_ (W)w);
3255 if (expect_false (!ev_is_active (w))) 4235 if (expect_false (!ev_is_active (w)))
3256 return; 4236 return;
3257 4237
… …
3273} 4253}
3274#endif 4254#endif
3275 4255
3276#if EV_IDLE_ENABLE 4256#if EV_IDLE_ENABLE
3277void 4257void
3278ev_idle_start (EV_P_ ev_idle *w) 4258ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3279{ 4259{
3280 if (expect_false (ev_is_active (w))) 4260 if (expect_false (ev_is_active (w)))
3281 return; 4261 return;
3282 4262
3283 pri_adjust (EV_A_ (W)w); 4263 pri_adjust (EV_A_ (W)w);
… …
3296 4276
3297 EV_FREQUENT_CHECK; 4277 EV_FREQUENT_CHECK;
3298} 4278}
3299 4279
3300void 4280void
3301ev_idle_stop (EV_P_ ev_idle *w) 4281ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3302{ 4282{
3303 clear_pending (EV_A_ (W)w); 4283 clear_pending (EV_A_ (W)w);
3304 if (expect_false (!ev_is_active (w))) 4284 if (expect_false (!ev_is_active (w)))
3305 return; 4285 return;
3306 4286
… …
3318 4298
3319 EV_FREQUENT_CHECK; 4299 EV_FREQUENT_CHECK;
3320} 4300}
3321#endif 4301#endif
3322 4302
4303#if EV_PREPARE_ENABLE
3323void 4304void
3324ev_prepare_start (EV_P_ ev_prepare *w) 4305ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3325{ 4306{
3326 if (expect_false (ev_is_active (w))) 4307 if (expect_false (ev_is_active (w)))
3327 return; 4308 return;
3328 4309
3329 EV_FREQUENT_CHECK; 4310 EV_FREQUENT_CHECK;
… …
3334 4315
3335 EV_FREQUENT_CHECK; 4316 EV_FREQUENT_CHECK;
3336} 4317}
3337 4318
3338void 4319void
3339ev_prepare_stop (EV_P_ ev_prepare *w) 4320ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3340{ 4321{
3341 clear_pending (EV_A_ (W)w); 4322 clear_pending (EV_A_ (W)w);
3342 if (expect_false (!ev_is_active (w))) 4323 if (expect_false (!ev_is_active (w)))
3343 return; 4324 return;
3344 4325
… …
3353 4334
3354 ev_stop (EV_A_ (W)w); 4335 ev_stop (EV_A_ (W)w);
3355 4336
3356 EV_FREQUENT_CHECK; 4337 EV_FREQUENT_CHECK;
3357} 4338}
4339#endif
3358 4340
4341#if EV_CHECK_ENABLE
3359void 4342void
3360ev_check_start (EV_P_ ev_check *w) 4343ev_check_start (EV_P_ ev_check *w) EV_THROW
3361{ 4344{
3362 if (expect_false (ev_is_active (w))) 4345 if (expect_false (ev_is_active (w)))
3363 return; 4346 return;
3364 4347
3365 EV_FREQUENT_CHECK; 4348 EV_FREQUENT_CHECK;
… …
3370 4353
3371 EV_FREQUENT_CHECK; 4354 EV_FREQUENT_CHECK;
3372} 4355}
3373 4356
3374void 4357void
3375ev_check_stop (EV_P_ ev_check *w) 4358ev_check_stop (EV_P_ ev_check *w) EV_THROW
3376{ 4359{
3377 clear_pending (EV_A_ (W)w); 4360 clear_pending (EV_A_ (W)w);
3378 if (expect_false (!ev_is_active (w))) 4361 if (expect_false (!ev_is_active (w)))
3379 return; 4362 return;
3380 4363
… …
3389 4372
3390 ev_stop (EV_A_ (W)w); 4373 ev_stop (EV_A_ (W)w);
3391 4374
3392 EV_FREQUENT_CHECK; 4375 EV_FREQUENT_CHECK;
3393} 4376}
4377#endif
3394 4378
3395#if EV_EMBED_ENABLE 4379#if EV_EMBED_ENABLE
3396void noinline 4380void noinline
3397ev_embed_sweep (EV_P_ ev_embed *w) 4381ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3398{ 4382{
3399 ev_loop (w->other, EVLOOP_NONBLOCK); 4383 ev_run (w->other, EVRUN_NOWAIT);
3400} 4384}
3401 4385
3402static void 4386static void
3403embed_io_cb (EV_P_ ev_io *io, int revents) 4387embed_io_cb (EV_P_ ev_io *io, int revents)
3404{ 4388{
3405 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4389 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3406 4390
3407 if (ev_cb (w)) 4391 if (ev_cb (w))
3408 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4392 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3409 else 4393 else
3410 ev_loop (w->other, EVLOOP_NONBLOCK); 4394 ev_run (w->other, EVRUN_NOWAIT);
3411} 4395}
3412 4396
3413static void 4397static void
3414embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4398embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3415{ 4399{
… …
3419 EV_P = w->other; 4403 EV_P = w->other;
3420 4404
3421 while (fdchangecnt) 4405 while (fdchangecnt)
3422 { 4406 {
3423 fd_reify (EV_A); 4407 fd_reify (EV_A);
3424 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4408 ev_run (EV_A_ EVRUN_NOWAIT);
3425 } 4409 }
3426 } 4410 }
3427} 4411}
3428 4412
3429static void 4413static void
… …
3435 4419
3436 { 4420 {
3437 EV_P = w->other; 4421 EV_P = w->other;
3438 4422
3439 ev_loop_fork (EV_A); 4423 ev_loop_fork (EV_A);
3440 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4424 ev_run (EV_A_ EVRUN_NOWAIT);
3441 } 4425 }
3442 4426
3443 ev_embed_start (EV_A_ w); 4427 ev_embed_start (EV_A_ w);
3444} 4428}
3445 4429
… …
3450 ev_idle_stop (EV_A_ idle); 4434 ev_idle_stop (EV_A_ idle);
3451} 4435}
3452#endif 4436#endif
3453 4437
3454void 4438void
3455ev_embed_start (EV_P_ ev_embed *w) 4439ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3456{ 4440{
3457 if (expect_false (ev_is_active (w))) 4441 if (expect_false (ev_is_active (w)))
3458 return; 4442 return;
3459 4443
3460 { 4444 {
… …
3481 4465
3482 EV_FREQUENT_CHECK; 4466 EV_FREQUENT_CHECK;
3483} 4467}
3484 4468
3485void 4469void
3486ev_embed_stop (EV_P_ ev_embed *w) 4470ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3487{ 4471{
3488 clear_pending (EV_A_ (W)w); 4472 clear_pending (EV_A_ (W)w);
3489 if (expect_false (!ev_is_active (w))) 4473 if (expect_false (!ev_is_active (w)))
3490 return; 4474 return;
3491 4475
… …
3501} 4485}
3502#endif 4486#endif
3503 4487
3504#if EV_FORK_ENABLE 4488#if EV_FORK_ENABLE
3505void 4489void
3506ev_fork_start (EV_P_ ev_fork *w) 4490ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3507{ 4491{
3508 if (expect_false (ev_is_active (w))) 4492 if (expect_false (ev_is_active (w)))
3509 return; 4493 return;
3510 4494
3511 EV_FREQUENT_CHECK; 4495 EV_FREQUENT_CHECK;
… …
3516 4500
3517 EV_FREQUENT_CHECK; 4501 EV_FREQUENT_CHECK;
3518} 4502}
3519 4503
3520void 4504void
3521ev_fork_stop (EV_P_ ev_fork *w) 4505ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3522{ 4506{
3523 clear_pending (EV_A_ (W)w); 4507 clear_pending (EV_A_ (W)w);
3524 if (expect_false (!ev_is_active (w))) 4508 if (expect_false (!ev_is_active (w)))
3525 return; 4509 return;
3526 4510
… …
3537 4521
3538 EV_FREQUENT_CHECK; 4522 EV_FREQUENT_CHECK;
3539} 4523}
3540#endif 4524#endif
3541 4525
4526#if EV_CLEANUP_ENABLE
4527void
4528ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4529{
4530 if (expect_false (ev_is_active (w)))
4531 return;
4532
4533 EV_FREQUENT_CHECK;
4534
4535 ev_start (EV_A_ (W)w, ++cleanupcnt);
4536 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4537 cleanups [cleanupcnt - 1] = w;
4538
4539 /* cleanup watchers should never keep a refcount on the loop */
4540 ev_unref (EV_A);
4541 EV_FREQUENT_CHECK;
4542}
4543
4544void
4545ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4546{
4547 clear_pending (EV_A_ (W)w);
4548 if (expect_false (!ev_is_active (w)))
4549 return;
4550
4551 EV_FREQUENT_CHECK;
4552 ev_ref (EV_A);
4553
4554 {
4555 int active = ev_active (w);
4556
4557 cleanups [active - 1] = cleanups [--cleanupcnt];
4558 ev_active (cleanups [active - 1]) = active;
4559 }
4560
4561 ev_stop (EV_A_ (W)w);
4562
4563 EV_FREQUENT_CHECK;
4564}
4565#endif
4566
3542#if EV_ASYNC_ENABLE 4567#if EV_ASYNC_ENABLE
3543void 4568void
3544ev_async_start (EV_P_ ev_async *w) 4569ev_async_start (EV_P_ ev_async *w) EV_THROW
3545{ 4570{
3546 if (expect_false (ev_is_active (w))) 4571 if (expect_false (ev_is_active (w)))
3547 return; 4572 return;
4573
4574 w->sent = 0;
3548 4575
3549 evpipe_init (EV_A); 4576 evpipe_init (EV_A);
3550 4577
3551 EV_FREQUENT_CHECK; 4578 EV_FREQUENT_CHECK;
3552 4579
… …
3556 4583
3557 EV_FREQUENT_CHECK; 4584 EV_FREQUENT_CHECK;
3558} 4585}
3559 4586
3560void 4587void
3561ev_async_stop (EV_P_ ev_async *w) 4588ev_async_stop (EV_P_ ev_async *w) EV_THROW
3562{ 4589{
3563 clear_pending (EV_A_ (W)w); 4590 clear_pending (EV_A_ (W)w);
3564 if (expect_false (!ev_is_active (w))) 4591 if (expect_false (!ev_is_active (w)))
3565 return; 4592 return;
3566 4593
… …
3577 4604
3578 EV_FREQUENT_CHECK; 4605 EV_FREQUENT_CHECK;
3579} 4606}
3580 4607
3581void 4608void
3582ev_async_send (EV_P_ ev_async *w) 4609ev_async_send (EV_P_ ev_async *w) EV_THROW
3583{ 4610{
3584 w->sent = 1; 4611 w->sent = 1;
3585 evpipe_write (EV_A_ &async_pending); 4612 evpipe_write (EV_A_ &async_pending);
3586} 4613}
3587#endif 4614#endif
… …
3624 4651
3625 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4652 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3626} 4653}
3627 4654
3628void 4655void
3629ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4656ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3630{ 4657{
3631 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4658 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3632 4659
3633 if (expect_false (!once)) 4660 if (expect_false (!once))
3634 { 4661 {
3635 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4662 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3636 return; 4663 return;
3637 } 4664 }
3638 4665
3639 once->cb = cb; 4666 once->cb = cb;
3640 once->arg = arg; 4667 once->arg = arg;
… …
3655} 4682}
3656 4683
3657/*****************************************************************************/ 4684/*****************************************************************************/
3658 4685
3659#if EV_WALK_ENABLE 4686#if EV_WALK_ENABLE
3660void 4687void ecb_cold
3661ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4688ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3662{ 4689{
3663 int i, j; 4690 int i, j;
3664 ev_watcher_list *wl, *wn; 4691 ev_watcher_list *wl, *wn;
3665 4692
3666 if (types & (EV_IO | EV_EMBED)) 4693 if (types & (EV_IO | EV_EMBED))
… …
3709 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4736 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3710#endif 4737#endif
3711 4738
3712#if EV_IDLE_ENABLE 4739#if EV_IDLE_ENABLE
3713 if (types & EV_IDLE) 4740 if (types & EV_IDLE)
3714 for (j = NUMPRI; i--; ) 4741 for (j = NUMPRI; j--; )
3715 for (i = idlecnt [j]; i--; ) 4742 for (i = idlecnt [j]; i--; )
3716 cb (EV_A_ EV_IDLE, idles [j][i]); 4743 cb (EV_A_ EV_IDLE, idles [j][i]);
3717#endif 4744#endif
3718 4745
3719#if EV_FORK_ENABLE 4746#if EV_FORK_ENABLE
… …
3727 if (types & EV_ASYNC) 4754 if (types & EV_ASYNC)
3728 for (i = asynccnt; i--; ) 4755 for (i = asynccnt; i--; )
3729 cb (EV_A_ EV_ASYNC, asyncs [i]); 4756 cb (EV_A_ EV_ASYNC, asyncs [i]);
3730#endif 4757#endif
3731 4758
4759#if EV_PREPARE_ENABLE
3732 if (types & EV_PREPARE) 4760 if (types & EV_PREPARE)
3733 for (i = preparecnt; i--; ) 4761 for (i = preparecnt; i--; )
3734#if EV_EMBED_ENABLE 4762# if EV_EMBED_ENABLE
3735 if (ev_cb (prepares [i]) != embed_prepare_cb) 4763 if (ev_cb (prepares [i]) != embed_prepare_cb)
3736#endif 4764# endif
3737 cb (EV_A_ EV_PREPARE, prepares [i]); 4765 cb (EV_A_ EV_PREPARE, prepares [i]);
4766#endif
3738 4767
4768#if EV_CHECK_ENABLE
3739 if (types & EV_CHECK) 4769 if (types & EV_CHECK)
3740 for (i = checkcnt; i--; ) 4770 for (i = checkcnt; i--; )
3741 cb (EV_A_ EV_CHECK, checks [i]); 4771 cb (EV_A_ EV_CHECK, checks [i]);
4772#endif
3742 4773
4774#if EV_SIGNAL_ENABLE
3743 if (types & EV_SIGNAL) 4775 if (types & EV_SIGNAL)
3744 for (i = 0; i < EV_NSIG - 1; ++i) 4776 for (i = 0; i < EV_NSIG - 1; ++i)
3745 for (wl = signals [i].head; wl; ) 4777 for (wl = signals [i].head; wl; )
3746 { 4778 {
3747 wn = wl->next; 4779 wn = wl->next;
3748 cb (EV_A_ EV_SIGNAL, wl); 4780 cb (EV_A_ EV_SIGNAL, wl);
3749 wl = wn; 4781 wl = wn;
3750 } 4782 }
4783#endif
3751 4784
4785#if EV_CHILD_ENABLE
3752 if (types & EV_CHILD) 4786 if (types & EV_CHILD)
3753 for (i = EV_PID_HASHSIZE; i--; ) 4787 for (i = (EV_PID_HASHSIZE); i--; )
3754 for (wl = childs [i]; wl; ) 4788 for (wl = childs [i]; wl; )
3755 { 4789 {
3756 wn = wl->next; 4790 wn = wl->next;
3757 cb (EV_A_ EV_CHILD, wl); 4791 cb (EV_A_ EV_CHILD, wl);
3758 wl = wn; 4792 wl = wn;
3759 } 4793 }
4794#endif
3760/* EV_STAT 0x00001000 /* stat data changed */ 4795/* EV_STAT 0x00001000 /* stat data changed */
3761/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4796/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3762} 4797}
3763#endif 4798#endif
3764 4799
3765#if EV_MULTIPLICITY 4800#if EV_MULTIPLICITY
3766 #include "ev_wrap.h" 4801 #include "ev_wrap.h"
3767#endif 4802#endif
3768 4803
3769#ifdef __cplusplus
3770}
3771#endif
3772

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