ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.312 by root, Wed Aug 12 18:48:17 2009 UTC vs.
Revision 1.427 by root, Sun May 6 19:29:59 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 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
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h>
157#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
158#include <fcntl.h> 169#include <fcntl.h>
159#include <stddef.h> 170#include <stddef.h>
160 171
161#include <stdio.h> 172#include <stdio.h>
162 173
163#include <assert.h> 174#include <assert.h>
164#include <errno.h> 175#include <errno.h>
165#include <sys/types.h> 176#include <sys/types.h>
166#include <time.h> 177#include <time.h>
178#include <limits.h>
167 179
168#include <signal.h> 180#include <signal.h>
169 181
170#ifdef EV_H 182#ifdef EV_H
171# include EV_H 183# include EV_H
172#else 184#else
173# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
174#endif 197#endif
175 198
176#ifndef _WIN32 199#ifndef _WIN32
177# include <sys/time.h> 200# include <sys/time.h>
178# include <sys/wait.h> 201# include <sys/wait.h>
… …
182# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
183# include <windows.h> 206# include <windows.h>
184# ifndef EV_SELECT_IS_WINSOCKET 207# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 208# define EV_SELECT_IS_WINSOCKET 1
186# endif 209# endif
210# undef EV_AVOID_STDIO
187#endif 211#endif
212
213/* OS X, in its infinite idiocy, actually HARDCODES
214 * a limit of 1024 into their select. Where people have brains,
215 * OS X engineers apparently have a vacuum. Or maybe they were
216 * ordered to have a vacuum, or they do anything for money.
217 * This might help. Or not.
218 */
219#define _DARWIN_UNLIMITED_SELECT 1
188 220
189/* this block tries to deduce configuration from header-defined symbols and defaults */ 221/* this block tries to deduce configuration from header-defined symbols and defaults */
190 222
191/* try to deduce the maximum number of signals on this platform */ 223/* try to deduce the maximum number of signals on this platform */
192#if defined (EV_NSIG) 224#if defined EV_NSIG
193/* use what's provided */ 225/* use what's provided */
194#elif defined (NSIG) 226#elif defined NSIG
195# define EV_NSIG (NSIG) 227# define EV_NSIG (NSIG)
196#elif defined(_NSIG) 228#elif defined _NSIG
197# define EV_NSIG (_NSIG) 229# define EV_NSIG (_NSIG)
198#elif defined (SIGMAX) 230#elif defined SIGMAX
199# define EV_NSIG (SIGMAX+1) 231# define EV_NSIG (SIGMAX+1)
200#elif defined (SIG_MAX) 232#elif defined SIG_MAX
201# define EV_NSIG (SIG_MAX+1) 233# define EV_NSIG (SIG_MAX+1)
202#elif defined (_SIG_MAX) 234#elif defined _SIG_MAX
203# define EV_NSIG (_SIG_MAX+1) 235# define EV_NSIG (_SIG_MAX+1)
204#elif defined (MAXSIG) 236#elif defined MAXSIG
205# define EV_NSIG (MAXSIG+1) 237# define EV_NSIG (MAXSIG+1)
206#elif defined (MAX_SIG) 238#elif defined MAX_SIG
207# define EV_NSIG (MAX_SIG+1) 239# define EV_NSIG (MAX_SIG+1)
208#elif defined (SIGARRAYSIZE) 240#elif defined SIGARRAYSIZE
209# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
210#elif defined (_sys_nsig) 242#elif defined _sys_nsig
211# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212#else 244#else
213# error "unable to find value for NSIG, please report" 245# error "unable to find value for NSIG, please report"
214/* to make it compile regardless, just remove the above line */ 246/* to make it compile regardless, just remove the above line, */
247/* but consider reporting it, too! :) */
215# define EV_NSIG 65 248# define EV_NSIG 65
249#endif
250
251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
216#endif 253#endif
217 254
218#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
219# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ >= 2
220# define EV_USE_CLOCK_SYSCALL 1 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
221# else 258# else
222# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
223# endif 260# endif
224#endif 261#endif
225 262
226#ifndef EV_USE_MONOTONIC 263#ifndef EV_USE_MONOTONIC
227# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 264# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
228# define EV_USE_MONOTONIC 1 265# define EV_USE_MONOTONIC EV_FEATURE_OS
229# else 266# else
230# define EV_USE_MONOTONIC 0 267# define EV_USE_MONOTONIC 0
231# endif 268# endif
232#endif 269#endif
233 270
… …
235# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 272# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
236#endif 273#endif
237 274
238#ifndef EV_USE_NANOSLEEP 275#ifndef EV_USE_NANOSLEEP
239# if _POSIX_C_SOURCE >= 199309L 276# if _POSIX_C_SOURCE >= 199309L
240# define EV_USE_NANOSLEEP 1 277# define EV_USE_NANOSLEEP EV_FEATURE_OS
241# else 278# else
242# define EV_USE_NANOSLEEP 0 279# define EV_USE_NANOSLEEP 0
243# endif 280# endif
244#endif 281#endif
245 282
246#ifndef EV_USE_SELECT 283#ifndef EV_USE_SELECT
247# define EV_USE_SELECT 1 284# define EV_USE_SELECT EV_FEATURE_BACKENDS
248#endif 285#endif
249 286
250#ifndef EV_USE_POLL 287#ifndef EV_USE_POLL
251# ifdef _WIN32 288# ifdef _WIN32
252# define EV_USE_POLL 0 289# define EV_USE_POLL 0
253# else 290# else
254# define EV_USE_POLL 1 291# define EV_USE_POLL EV_FEATURE_BACKENDS
255# endif 292# endif
256#endif 293#endif
257 294
258#ifndef EV_USE_EPOLL 295#ifndef EV_USE_EPOLL
259# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
260# define EV_USE_EPOLL 1 297# define EV_USE_EPOLL EV_FEATURE_BACKENDS
261# else 298# else
262# define EV_USE_EPOLL 0 299# define EV_USE_EPOLL 0
263# endif 300# endif
264#endif 301#endif
265 302
… …
271# define EV_USE_PORT 0 308# define EV_USE_PORT 0
272#endif 309#endif
273 310
274#ifndef EV_USE_INOTIFY 311#ifndef EV_USE_INOTIFY
275# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
276# define EV_USE_INOTIFY 1 313# define EV_USE_INOTIFY EV_FEATURE_OS
277# else 314# else
278# define EV_USE_INOTIFY 0 315# define EV_USE_INOTIFY 0
279# endif 316# endif
280#endif 317#endif
281 318
282#ifndef EV_PID_HASHSIZE 319#ifndef EV_PID_HASHSIZE
283# if EV_MINIMAL 320# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
284# define EV_PID_HASHSIZE 1
285# else
286# define EV_PID_HASHSIZE 16
287# endif
288#endif 321#endif
289 322
290#ifndef EV_INOTIFY_HASHSIZE 323#ifndef EV_INOTIFY_HASHSIZE
291# if EV_MINIMAL 324# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
292# define EV_INOTIFY_HASHSIZE 1
293# else
294# define EV_INOTIFY_HASHSIZE 16
295# endif
296#endif 325#endif
297 326
298#ifndef EV_USE_EVENTFD 327#ifndef EV_USE_EVENTFD
299# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 328# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
300# define EV_USE_EVENTFD 1 329# define EV_USE_EVENTFD EV_FEATURE_OS
301# else 330# else
302# define EV_USE_EVENTFD 0 331# define EV_USE_EVENTFD 0
303# endif 332# endif
304#endif 333#endif
305 334
306#ifndef EV_USE_SIGNALFD 335#ifndef EV_USE_SIGNALFD
307# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 336# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
308# define EV_USE_SIGNALFD 1 337# define EV_USE_SIGNALFD EV_FEATURE_OS
309# else 338# else
310# define EV_USE_SIGNALFD 0 339# define EV_USE_SIGNALFD 0
311# endif 340# endif
312#endif 341#endif
313 342
… …
316# define EV_USE_4HEAP 1 345# define EV_USE_4HEAP 1
317# define EV_HEAP_CACHE_AT 1 346# define EV_HEAP_CACHE_AT 1
318#endif 347#endif
319 348
320#ifndef EV_VERIFY 349#ifndef EV_VERIFY
321# define EV_VERIFY !EV_MINIMAL 350# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
322#endif 351#endif
323 352
324#ifndef EV_USE_4HEAP 353#ifndef EV_USE_4HEAP
325# define EV_USE_4HEAP !EV_MINIMAL 354# define EV_USE_4HEAP EV_FEATURE_DATA
326#endif 355#endif
327 356
328#ifndef EV_HEAP_CACHE_AT 357#ifndef EV_HEAP_CACHE_AT
329# define EV_HEAP_CACHE_AT !EV_MINIMAL 358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
330#endif 359#endif
331 360
332/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 361/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
333/* which makes programs even slower. might work on other unices, too. */ 362/* which makes programs even slower. might work on other unices, too. */
334#if EV_USE_CLOCK_SYSCALL 363#if EV_USE_CLOCK_SYSCALL
335# include <syscall.h> 364# include <sys/syscall.h>
336# ifdef SYS_clock_gettime 365# ifdef SYS_clock_gettime
337# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 366# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
338# undef EV_USE_MONOTONIC 367# undef EV_USE_MONOTONIC
339# define EV_USE_MONOTONIC 1 368# define EV_USE_MONOTONIC 1
340# else 369# else
… …
343# endif 372# endif
344#endif 373#endif
345 374
346/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 375/* this block fixes any misconfiguration where we know we run into trouble otherwise */
347 376
377#ifdef _AIX
378/* AIX has a completely broken poll.h header */
379# undef EV_USE_POLL
380# define EV_USE_POLL 0
381#endif
382
348#ifndef CLOCK_MONOTONIC 383#ifndef CLOCK_MONOTONIC
349# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 0 385# define EV_USE_MONOTONIC 0
351#endif 386#endif
352 387
… …
359# undef EV_USE_INOTIFY 394# undef EV_USE_INOTIFY
360# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
361#endif 396#endif
362 397
363#if !EV_USE_NANOSLEEP 398#if !EV_USE_NANOSLEEP
364# ifndef _WIN32 399/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined _WIN32 && !defined __hpux
365# include <sys/select.h> 401# include <sys/select.h>
366# endif 402# endif
367#endif 403#endif
368 404
369#if EV_USE_INOTIFY 405#if EV_USE_INOTIFY
370# include <sys/utsname.h>
371# include <sys/statfs.h> 406# include <sys/statfs.h>
372# include <sys/inotify.h> 407# include <sys/inotify.h>
373/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
374# ifndef IN_DONT_FOLLOW 409# ifndef IN_DONT_FOLLOW
375# undef EV_USE_INOTIFY 410# undef EV_USE_INOTIFY
… …
392# define EFD_CLOEXEC O_CLOEXEC 427# define EFD_CLOEXEC O_CLOEXEC
393# else 428# else
394# define EFD_CLOEXEC 02000000 429# define EFD_CLOEXEC 02000000
395# endif 430# endif
396# endif 431# endif
397# ifdef __cplusplus 432EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
398extern "C" { 433#endif
434
435#if EV_USE_SIGNALFD
436/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
437# include <stdint.h>
438# ifndef SFD_NONBLOCK
439# define SFD_NONBLOCK O_NONBLOCK
399# endif 440# endif
400int eventfd (unsigned int initval, int flags); 441# ifndef SFD_CLOEXEC
401# ifdef __cplusplus 442# ifdef O_CLOEXEC
402} 443# define SFD_CLOEXEC O_CLOEXEC
444# else
445# define SFD_CLOEXEC 02000000
446# endif
403# endif 447# endif
404#endif 448EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
405 449
406#if EV_USE_SIGNALFD 450struct signalfd_siginfo
407# include <sys/signalfd.h> 451{
452 uint32_t ssi_signo;
453 char pad[128 - sizeof (uint32_t)];
454};
408#endif 455#endif
409 456
410/**/ 457/**/
411 458
412#if EV_VERIFY >= 3 459#if EV_VERIFY >= 3
413# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 460# define EV_FREQUENT_CHECK ev_verify (EV_A)
414#else 461#else
415# define EV_FREQUENT_CHECK do { } while (0) 462# define EV_FREQUENT_CHECK do { } while (0)
416#endif 463#endif
417 464
418/* 465/*
419 * This is used to avoid floating point rounding problems. 466 * This is used to work around floating point rounding problems.
420 * It is added to ev_rt_now when scheduling periodics
421 * to ensure progress, time-wise, even when rounding
422 * errors are against us.
423 * This value is good at least till the year 4000. 467 * This value is good at least till the year 4000.
424 * Better solutions welcome.
425 */ 468 */
426#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 469#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
470/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
427 471
428#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
429#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
430/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
431 474
475#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
476#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
477
478/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479/* ECB.H BEGIN */
480/*
481 * libecb - http://software.schmorp.de/pkg/libecb
482 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved.
486 *
487 * Redistribution and use in source and binary forms, with or without modifica-
488 * tion, are permitted provided that the following conditions are met:
489 *
490 * 1. Redistributions of source code must retain the above copyright notice,
491 * this list of conditions and the following disclaimer.
492 *
493 * 2. Redistributions in binary form must reproduce the above copyright
494 * notice, this list of conditions and the following disclaimer in the
495 * documentation and/or other materials provided with the distribution.
496 *
497 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
498 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
499 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
500 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
501 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
502 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
505 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
506 * OF THE POSSIBILITY OF SUCH DAMAGE.
507 */
508
509#ifndef ECB_H
510#define ECB_H
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
432#if __GNUC__ >= 4 519 #if __GNUC__
433# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
434# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
435#else 526#else
436# define expect(expr,value) (expr) 527 #include <inttypes.h>
437# define noinline
438# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
439# define inline
440# endif 528#endif
529
530/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so.
534 * we try to detect these and simply assume they are not gcc - if they have
535 * an issue with that they should have done it right in the first place.
536 */
537#ifndef ECB_GCC_VERSION
538 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
539 #define ECB_GCC_VERSION(major,minor) 0
540 #else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
441#endif 542 #endif
543#endif
442 544
545/*****************************************************************************/
546
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549
550#if ECB_NO_THREADS
551# define ECB_NO_SMP 1
552#endif
553
554#if ECB_NO_THREADS || ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0)
556#endif
557
558#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
560 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
567 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
570 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #elif defined __mips__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
584 #elif defined __alpha__
585 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
586 #endif
587 #endif
588#endif
589
590#ifndef ECB_MEMORY_FENCE
591 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
592 #define ECB_MEMORY_FENCE __sync_synchronize ()
593 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
594 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
595 #elif _MSC_VER >= 1400 /* VC++ 2005 */
596 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
597 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
598 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
599 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
600 #elif defined _WIN32
601 #include <WinNT.h>
602 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
603 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
604 #include <mbarrier.h>
605 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
606 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
607 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
608 #elif __xlC__
609 #define ECB_MEMORY_FENCE __sync ()
610 #endif
611#endif
612
613#ifndef ECB_MEMORY_FENCE
614 #if !ECB_AVOID_PTHREADS
615 /*
616 * if you get undefined symbol references to pthread_mutex_lock,
617 * or failure to find pthread.h, then you should implement
618 * the ECB_MEMORY_FENCE operations for your cpu/compiler
619 * OR provide pthread.h and link against the posix thread library
620 * of your system.
621 */
622 #include <pthread.h>
623 #define ECB_NEEDS_PTHREADS 1
624 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
625
626 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
627 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
628 #endif
629#endif
630
631#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
632 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
633#endif
634
635#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
636 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
637#endif
638
639/*****************************************************************************/
640
641#define ECB_C99 (__STDC_VERSION__ >= 199901L)
642
643#if __cplusplus
644 #define ecb_inline static inline
645#elif ECB_GCC_VERSION(2,5)
646 #define ecb_inline static __inline__
647#elif ECB_C99
648 #define ecb_inline static inline
649#else
650 #define ecb_inline static
651#endif
652
653#if ECB_GCC_VERSION(3,3)
654 #define ecb_restrict __restrict__
655#elif ECB_C99
656 #define ecb_restrict restrict
657#else
658 #define ecb_restrict
659#endif
660
661typedef int ecb_bool;
662
663#define ECB_CONCAT_(a, b) a ## b
664#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
665#define ECB_STRINGIFY_(a) # a
666#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
667
668#define ecb_function_ ecb_inline
669
670#if ECB_GCC_VERSION(3,1)
671 #define ecb_attribute(attrlist) __attribute__(attrlist)
672 #define ecb_is_constant(expr) __builtin_constant_p (expr)
673 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
674 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
675#else
676 #define ecb_attribute(attrlist)
677 #define ecb_is_constant(expr) 0
678 #define ecb_expect(expr,value) (expr)
679 #define ecb_prefetch(addr,rw,locality)
680#endif
681
682/* no emulation for ecb_decltype */
683#if ECB_GCC_VERSION(4,5)
684 #define ecb_decltype(x) __decltype(x)
685#elif ECB_GCC_VERSION(3,0)
686 #define ecb_decltype(x) __typeof(x)
687#endif
688
689#define ecb_noinline ecb_attribute ((__noinline__))
690#define ecb_noreturn ecb_attribute ((__noreturn__))
691#define ecb_unused ecb_attribute ((__unused__))
692#define ecb_const ecb_attribute ((__const__))
693#define ecb_pure ecb_attribute ((__pure__))
694
695#if ECB_GCC_VERSION(4,3)
696 #define ecb_artificial ecb_attribute ((__artificial__))
697 #define ecb_hot ecb_attribute ((__hot__))
698 #define ecb_cold ecb_attribute ((__cold__))
699#else
700 #define ecb_artificial
701 #define ecb_hot
702 #define ecb_cold
703#endif
704
705/* put around conditional expressions if you are very sure that the */
706/* expression is mostly true or mostly false. note that these return */
707/* booleans, not the expression. */
443#define expect_false(expr) expect ((expr) != 0, 0) 708#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
444#define expect_true(expr) expect ((expr) != 0, 1) 709#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
710/* for compatibility to the rest of the world */
711#define ecb_likely(expr) ecb_expect_true (expr)
712#define ecb_unlikely(expr) ecb_expect_false (expr)
713
714/* count trailing zero bits and count # of one bits */
715#if ECB_GCC_VERSION(3,4)
716 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
717 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
718 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
719 #define ecb_ctz32(x) __builtin_ctz (x)
720 #define ecb_ctz64(x) __builtin_ctzll (x)
721 #define ecb_popcount32(x) __builtin_popcount (x)
722 /* no popcountll */
723#else
724 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
725 ecb_function_ int
726 ecb_ctz32 (uint32_t x)
727 {
728 int r = 0;
729
730 x &= ~x + 1; /* this isolates the lowest bit */
731
732#if ECB_branchless_on_i386
733 r += !!(x & 0xaaaaaaaa) << 0;
734 r += !!(x & 0xcccccccc) << 1;
735 r += !!(x & 0xf0f0f0f0) << 2;
736 r += !!(x & 0xff00ff00) << 3;
737 r += !!(x & 0xffff0000) << 4;
738#else
739 if (x & 0xaaaaaaaa) r += 1;
740 if (x & 0xcccccccc) r += 2;
741 if (x & 0xf0f0f0f0) r += 4;
742 if (x & 0xff00ff00) r += 8;
743 if (x & 0xffff0000) r += 16;
744#endif
745
746 return r;
747 }
748
749 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
750 ecb_function_ int
751 ecb_ctz64 (uint64_t x)
752 {
753 int shift = x & 0xffffffffU ? 0 : 32;
754 return ecb_ctz32 (x >> shift) + shift;
755 }
756
757 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
758 ecb_function_ int
759 ecb_popcount32 (uint32_t x)
760 {
761 x -= (x >> 1) & 0x55555555;
762 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
763 x = ((x >> 4) + x) & 0x0f0f0f0f;
764 x *= 0x01010101;
765
766 return x >> 24;
767 }
768
769 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
770 ecb_function_ int ecb_ld32 (uint32_t x)
771 {
772 int r = 0;
773
774 if (x >> 16) { x >>= 16; r += 16; }
775 if (x >> 8) { x >>= 8; r += 8; }
776 if (x >> 4) { x >>= 4; r += 4; }
777 if (x >> 2) { x >>= 2; r += 2; }
778 if (x >> 1) { r += 1; }
779
780 return r;
781 }
782
783 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
784 ecb_function_ int ecb_ld64 (uint64_t x)
785 {
786 int r = 0;
787
788 if (x >> 32) { x >>= 32; r += 32; }
789
790 return r + ecb_ld32 (x);
791 }
792#endif
793
794ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
795ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
796{
797 return ( (x * 0x0802U & 0x22110U)
798 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
799}
800
801ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
802ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
803{
804 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
805 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
806 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
807 x = ( x >> 8 ) | ( x << 8);
808
809 return x;
810}
811
812ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
813ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
814{
815 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
816 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
817 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
818 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
819 x = ( x >> 16 ) | ( x << 16);
820
821 return x;
822}
823
824/* popcount64 is only available on 64 bit cpus as gcc builtin */
825/* so for this version we are lazy */
826ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
827ecb_function_ int
828ecb_popcount64 (uint64_t x)
829{
830 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
831}
832
833ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
834ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
835ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
836ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
837ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
838ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
839ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
840ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
841
842ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
843ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
844ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
845ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
846ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
847ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
848ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
849ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
850
851#if ECB_GCC_VERSION(4,3)
852 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
853 #define ecb_bswap32(x) __builtin_bswap32 (x)
854 #define ecb_bswap64(x) __builtin_bswap64 (x)
855#else
856 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
857 ecb_function_ uint16_t
858 ecb_bswap16 (uint16_t x)
859 {
860 return ecb_rotl16 (x, 8);
861 }
862
863 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
864 ecb_function_ uint32_t
865 ecb_bswap32 (uint32_t x)
866 {
867 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
868 }
869
870 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
871 ecb_function_ uint64_t
872 ecb_bswap64 (uint64_t x)
873 {
874 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
875 }
876#endif
877
878#if ECB_GCC_VERSION(4,5)
879 #define ecb_unreachable() __builtin_unreachable ()
880#else
881 /* this seems to work fine, but gcc always emits a warning for it :/ */
882 ecb_inline void ecb_unreachable (void) ecb_noreturn;
883 ecb_inline void ecb_unreachable (void) { }
884#endif
885
886/* try to tell the compiler that some condition is definitely true */
887#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
888
889ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
890ecb_inline unsigned char
891ecb_byteorder_helper (void)
892{
893 const uint32_t u = 0x11223344;
894 return *(unsigned char *)&u;
895}
896
897ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
898ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
899ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
900ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
901
902#if ECB_GCC_VERSION(3,0) || ECB_C99
903 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
904#else
905 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
906#endif
907
908#if __cplusplus
909 template<typename T>
910 static inline T ecb_div_rd (T val, T div)
911 {
912 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
913 }
914 template<typename T>
915 static inline T ecb_div_ru (T val, T div)
916 {
917 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
918 }
919#else
920 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
921 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
922#endif
923
924#if ecb_cplusplus_does_not_suck
925 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
926 template<typename T, int N>
927 static inline int ecb_array_length (const T (&arr)[N])
928 {
929 return N;
930 }
931#else
932 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
933#endif
934
935#endif
936
937/* ECB.H END */
938
939#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
940/* if your architecture doesn't need memory fences, e.g. because it is
941 * single-cpu/core, or if you use libev in a project that doesn't use libev
942 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
943 * libev, in which cases the memory fences become nops.
944 * alternatively, you can remove this #error and link against libpthread,
945 * which will then provide the memory fences.
946 */
947# error "memory fences not defined for your architecture, please report"
948#endif
949
950#ifndef ECB_MEMORY_FENCE
951# define ECB_MEMORY_FENCE do { } while (0)
952# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
953# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
954#endif
955
956#define expect_false(cond) ecb_expect_false (cond)
957#define expect_true(cond) ecb_expect_true (cond)
958#define noinline ecb_noinline
959
445#define inline_size static inline 960#define inline_size ecb_inline
446 961
447#if EV_MINIMAL 962#if EV_FEATURE_CODE
963# define inline_speed ecb_inline
964#else
448# define inline_speed static noinline 965# define inline_speed static noinline
449#else
450# define inline_speed static inline
451#endif 966#endif
452 967
453#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 968#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
454 969
455#if EV_MINPRI == EV_MAXPRI 970#if EV_MINPRI == EV_MAXPRI
… …
468#define ev_active(w) ((W)(w))->active 983#define ev_active(w) ((W)(w))->active
469#define ev_at(w) ((WT)(w))->at 984#define ev_at(w) ((WT)(w))->at
470 985
471#if EV_USE_REALTIME 986#if EV_USE_REALTIME
472/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 987/* sig_atomic_t is used to avoid per-thread variables or locking but still */
473/* giving it a reasonably high chance of working on typical architetcures */ 988/* giving it a reasonably high chance of working on typical architectures */
474static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 989static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
475#endif 990#endif
476 991
477#if EV_USE_MONOTONIC 992#if EV_USE_MONOTONIC
478static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 993static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
479#endif 994#endif
480 995
996#ifndef EV_FD_TO_WIN32_HANDLE
997# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
998#endif
999#ifndef EV_WIN32_HANDLE_TO_FD
1000# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1001#endif
1002#ifndef EV_WIN32_CLOSE_FD
1003# define EV_WIN32_CLOSE_FD(fd) close (fd)
1004#endif
1005
481#ifdef _WIN32 1006#ifdef _WIN32
482# include "ev_win32.c" 1007# include "ev_win32.c"
483#endif 1008#endif
484 1009
485/*****************************************************************************/ 1010/*****************************************************************************/
486 1011
1012/* define a suitable floor function (only used by periodics atm) */
1013
1014#if EV_USE_FLOOR
1015# include <math.h>
1016# define ev_floor(v) floor (v)
1017#else
1018
1019#include <float.h>
1020
1021/* a floor() replacement function, should be independent of ev_tstamp type */
1022static ev_tstamp noinline
1023ev_floor (ev_tstamp v)
1024{
1025 /* the choice of shift factor is not terribly important */
1026#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1027 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1028#else
1029 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1030#endif
1031
1032 /* argument too large for an unsigned long? */
1033 if (expect_false (v >= shift))
1034 {
1035 ev_tstamp f;
1036
1037 if (v == v - 1.)
1038 return v; /* very large number */
1039
1040 f = shift * ev_floor (v * (1. / shift));
1041 return f + ev_floor (v - f);
1042 }
1043
1044 /* special treatment for negative args? */
1045 if (expect_false (v < 0.))
1046 {
1047 ev_tstamp f = -ev_floor (-v);
1048
1049 return f - (f == v ? 0 : 1);
1050 }
1051
1052 /* fits into an unsigned long */
1053 return (unsigned long)v;
1054}
1055
1056#endif
1057
1058/*****************************************************************************/
1059
1060#ifdef __linux
1061# include <sys/utsname.h>
1062#endif
1063
1064static unsigned int noinline ecb_cold
1065ev_linux_version (void)
1066{
1067#ifdef __linux
1068 unsigned int v = 0;
1069 struct utsname buf;
1070 int i;
1071 char *p = buf.release;
1072
1073 if (uname (&buf))
1074 return 0;
1075
1076 for (i = 3+1; --i; )
1077 {
1078 unsigned int c = 0;
1079
1080 for (;;)
1081 {
1082 if (*p >= '0' && *p <= '9')
1083 c = c * 10 + *p++ - '0';
1084 else
1085 {
1086 p += *p == '.';
1087 break;
1088 }
1089 }
1090
1091 v = (v << 8) | c;
1092 }
1093
1094 return v;
1095#else
1096 return 0;
1097#endif
1098}
1099
1100/*****************************************************************************/
1101
1102#if EV_AVOID_STDIO
1103static void noinline ecb_cold
1104ev_printerr (const char *msg)
1105{
1106 write (STDERR_FILENO, msg, strlen (msg));
1107}
1108#endif
1109
487static void (*syserr_cb)(const char *msg); 1110static void (*syserr_cb)(const char *msg) EV_THROW;
488 1111
489void 1112void ecb_cold
490ev_set_syserr_cb (void (*cb)(const char *msg)) 1113ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
491{ 1114{
492 syserr_cb = cb; 1115 syserr_cb = cb;
493} 1116}
494 1117
495static void noinline 1118static void noinline ecb_cold
496ev_syserr (const char *msg) 1119ev_syserr (const char *msg)
497{ 1120{
498 if (!msg) 1121 if (!msg)
499 msg = "(libev) system error"; 1122 msg = "(libev) system error";
500 1123
501 if (syserr_cb) 1124 if (syserr_cb)
502 syserr_cb (msg); 1125 syserr_cb (msg);
503 else 1126 else
504 { 1127 {
1128#if EV_AVOID_STDIO
1129 ev_printerr (msg);
1130 ev_printerr (": ");
1131 ev_printerr (strerror (errno));
1132 ev_printerr ("\n");
1133#else
505 perror (msg); 1134 perror (msg);
1135#endif
506 abort (); 1136 abort ();
507 } 1137 }
508} 1138}
509 1139
510static void * 1140static void *
511ev_realloc_emul (void *ptr, long size) 1141ev_realloc_emul (void *ptr, long size)
512{ 1142{
1143#if __GLIBC__
1144 return realloc (ptr, size);
1145#else
513 /* some systems, notably openbsd and darwin, fail to properly 1146 /* some systems, notably openbsd and darwin, fail to properly
514 * implement realloc (x, 0) (as required by both ansi c-98 and 1147 * implement realloc (x, 0) (as required by both ansi c-89 and
515 * the single unix specification, so work around them here. 1148 * the single unix specification, so work around them here.
516 */ 1149 */
517 1150
518 if (size) 1151 if (size)
519 return realloc (ptr, size); 1152 return realloc (ptr, size);
520 1153
521 free (ptr); 1154 free (ptr);
522 return 0; 1155 return 0;
1156#endif
523} 1157}
524 1158
525static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1159static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
526 1160
527void 1161void ecb_cold
528ev_set_allocator (void *(*cb)(void *ptr, long size)) 1162ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
529{ 1163{
530 alloc = cb; 1164 alloc = cb;
531} 1165}
532 1166
533inline_speed void * 1167inline_speed void *
… …
535{ 1169{
536 ptr = alloc (ptr, size); 1170 ptr = alloc (ptr, size);
537 1171
538 if (!ptr && size) 1172 if (!ptr && size)
539 { 1173 {
1174#if EV_AVOID_STDIO
1175 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1176#else
540 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1177 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1178#endif
541 abort (); 1179 abort ();
542 } 1180 }
543 1181
544 return ptr; 1182 return ptr;
545} 1183}
… …
561 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1199 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
562 unsigned char unused; 1200 unsigned char unused;
563#if EV_USE_EPOLL 1201#if EV_USE_EPOLL
564 unsigned int egen; /* generation counter to counter epoll bugs */ 1202 unsigned int egen; /* generation counter to counter epoll bugs */
565#endif 1203#endif
566#if EV_SELECT_IS_WINSOCKET 1204#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
567 SOCKET handle; 1205 SOCKET handle;
1206#endif
1207#if EV_USE_IOCP
1208 OVERLAPPED or, ow;
568#endif 1209#endif
569} ANFD; 1210} ANFD;
570 1211
571/* stores the pending event set for a given watcher */ 1212/* stores the pending event set for a given watcher */
572typedef struct 1213typedef struct
… …
614 #undef VAR 1255 #undef VAR
615 }; 1256 };
616 #include "ev_wrap.h" 1257 #include "ev_wrap.h"
617 1258
618 static struct ev_loop default_loop_struct; 1259 static struct ev_loop default_loop_struct;
619 struct ev_loop *ev_default_loop_ptr; 1260 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
620 1261
621#else 1262#else
622 1263
623 ev_tstamp ev_rt_now; 1264 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
624 #define VAR(name,decl) static decl; 1265 #define VAR(name,decl) static decl;
625 #include "ev_vars.h" 1266 #include "ev_vars.h"
626 #undef VAR 1267 #undef VAR
627 1268
628 static int ev_default_loop_ptr; 1269 static int ev_default_loop_ptr;
629 1270
630#endif 1271#endif
631 1272
632#if EV_MINIMAL < 2 1273#if EV_FEATURE_API
633# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1274# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
634# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1275# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
635# define EV_INVOKE_PENDING invoke_cb (EV_A) 1276# define EV_INVOKE_PENDING invoke_cb (EV_A)
636#else 1277#else
637# define EV_RELEASE_CB (void)0 1278# define EV_RELEASE_CB (void)0
638# define EV_ACQUIRE_CB (void)0 1279# define EV_ACQUIRE_CB (void)0
639# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1280# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
640#endif 1281#endif
641 1282
642#define EVUNLOOP_RECURSE 0x80 1283#define EVBREAK_RECURSE 0x80
643 1284
644/*****************************************************************************/ 1285/*****************************************************************************/
645 1286
646#ifndef EV_HAVE_EV_TIME 1287#ifndef EV_HAVE_EV_TIME
647ev_tstamp 1288ev_tstamp
648ev_time (void) 1289ev_time (void) EV_THROW
649{ 1290{
650#if EV_USE_REALTIME 1291#if EV_USE_REALTIME
651 if (expect_true (have_realtime)) 1292 if (expect_true (have_realtime))
652 { 1293 {
653 struct timespec ts; 1294 struct timespec ts;
… …
677 return ev_time (); 1318 return ev_time ();
678} 1319}
679 1320
680#if EV_MULTIPLICITY 1321#if EV_MULTIPLICITY
681ev_tstamp 1322ev_tstamp
682ev_now (EV_P) 1323ev_now (EV_P) EV_THROW
683{ 1324{
684 return ev_rt_now; 1325 return ev_rt_now;
685} 1326}
686#endif 1327#endif
687 1328
688void 1329void
689ev_sleep (ev_tstamp delay) 1330ev_sleep (ev_tstamp delay) EV_THROW
690{ 1331{
691 if (delay > 0.) 1332 if (delay > 0.)
692 { 1333 {
693#if EV_USE_NANOSLEEP 1334#if EV_USE_NANOSLEEP
694 struct timespec ts; 1335 struct timespec ts;
695 1336
696 ts.tv_sec = (time_t)delay; 1337 EV_TS_SET (ts, delay);
697 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
698
699 nanosleep (&ts, 0); 1338 nanosleep (&ts, 0);
700#elif defined(_WIN32) 1339#elif defined _WIN32
701 Sleep ((unsigned long)(delay * 1e3)); 1340 Sleep ((unsigned long)(delay * 1e3));
702#else 1341#else
703 struct timeval tv; 1342 struct timeval tv;
704 1343
705 tv.tv_sec = (time_t)delay;
706 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
707
708 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1344 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
709 /* something not guaranteed by newer posix versions, but guaranteed */ 1345 /* something not guaranteed by newer posix versions, but guaranteed */
710 /* by older ones */ 1346 /* by older ones */
1347 EV_TV_SET (tv, delay);
711 select (0, 0, 0, 0, &tv); 1348 select (0, 0, 0, 0, &tv);
712#endif 1349#endif
713 } 1350 }
714} 1351}
715 1352
716/*****************************************************************************/ 1353/*****************************************************************************/
717 1354
718#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1355#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
719 1356
720/* find a suitable new size for the given array, */ 1357/* find a suitable new size for the given array, */
721/* hopefully by rounding to a ncie-to-malloc size */ 1358/* hopefully by rounding to a nice-to-malloc size */
722inline_size int 1359inline_size int
723array_nextsize (int elem, int cur, int cnt) 1360array_nextsize (int elem, int cur, int cnt)
724{ 1361{
725 int ncur = cur + 1; 1362 int ncur = cur + 1;
726 1363
727 do 1364 do
728 ncur <<= 1; 1365 ncur <<= 1;
729 while (cnt > ncur); 1366 while (cnt > ncur);
730 1367
731 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1368 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
732 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1369 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
733 { 1370 {
734 ncur *= elem; 1371 ncur *= elem;
735 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1372 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
736 ncur = ncur - sizeof (void *) * 4; 1373 ncur = ncur - sizeof (void *) * 4;
… …
738 } 1375 }
739 1376
740 return ncur; 1377 return ncur;
741} 1378}
742 1379
743static noinline void * 1380static void * noinline ecb_cold
744array_realloc (int elem, void *base, int *cur, int cnt) 1381array_realloc (int elem, void *base, int *cur, int cnt)
745{ 1382{
746 *cur = array_nextsize (elem, *cur, cnt); 1383 *cur = array_nextsize (elem, *cur, cnt);
747 return ev_realloc (base, elem * *cur); 1384 return ev_realloc (base, elem * *cur);
748} 1385}
… …
751 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1388 memset ((void *)(base), 0, sizeof (*(base)) * (count))
752 1389
753#define array_needsize(type,base,cur,cnt,init) \ 1390#define array_needsize(type,base,cur,cnt,init) \
754 if (expect_false ((cnt) > (cur))) \ 1391 if (expect_false ((cnt) > (cur))) \
755 { \ 1392 { \
756 int ocur_ = (cur); \ 1393 int ecb_unused ocur_ = (cur); \
757 (base) = (type *)array_realloc \ 1394 (base) = (type *)array_realloc \
758 (sizeof (type), (base), &(cur), (cnt)); \ 1395 (sizeof (type), (base), &(cur), (cnt)); \
759 init ((base) + (ocur_), (cur) - ocur_); \ 1396 init ((base) + (ocur_), (cur) - ocur_); \
760 } 1397 }
761 1398
… …
779pendingcb (EV_P_ ev_prepare *w, int revents) 1416pendingcb (EV_P_ ev_prepare *w, int revents)
780{ 1417{
781} 1418}
782 1419
783void noinline 1420void noinline
784ev_feed_event (EV_P_ void *w, int revents) 1421ev_feed_event (EV_P_ void *w, int revents) EV_THROW
785{ 1422{
786 W w_ = (W)w; 1423 W w_ = (W)w;
787 int pri = ABSPRI (w_); 1424 int pri = ABSPRI (w_);
788 1425
789 if (expect_false (w_->pending)) 1426 if (expect_false (w_->pending))
… …
793 w_->pending = ++pendingcnt [pri]; 1430 w_->pending = ++pendingcnt [pri];
794 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1431 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
795 pendings [pri][w_->pending - 1].w = w_; 1432 pendings [pri][w_->pending - 1].w = w_;
796 pendings [pri][w_->pending - 1].events = revents; 1433 pendings [pri][w_->pending - 1].events = revents;
797 } 1434 }
1435
1436 pendingpri = NUMPRI - 1;
798} 1437}
799 1438
800inline_speed void 1439inline_speed void
801feed_reverse (EV_P_ W w) 1440feed_reverse (EV_P_ W w)
802{ 1441{
… …
822} 1461}
823 1462
824/*****************************************************************************/ 1463/*****************************************************************************/
825 1464
826inline_speed void 1465inline_speed void
827fd_event_nc (EV_P_ int fd, int revents) 1466fd_event_nocheck (EV_P_ int fd, int revents)
828{ 1467{
829 ANFD *anfd = anfds + fd; 1468 ANFD *anfd = anfds + fd;
830 ev_io *w; 1469 ev_io *w;
831 1470
832 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1471 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
844fd_event (EV_P_ int fd, int revents) 1483fd_event (EV_P_ int fd, int revents)
845{ 1484{
846 ANFD *anfd = anfds + fd; 1485 ANFD *anfd = anfds + fd;
847 1486
848 if (expect_true (!anfd->reify)) 1487 if (expect_true (!anfd->reify))
849 fd_event_nc (EV_A_ fd, revents); 1488 fd_event_nocheck (EV_A_ fd, revents);
850} 1489}
851 1490
852void 1491void
853ev_feed_fd_event (EV_P_ int fd, int revents) 1492ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
854{ 1493{
855 if (fd >= 0 && fd < anfdmax) 1494 if (fd >= 0 && fd < anfdmax)
856 fd_event_nc (EV_A_ fd, revents); 1495 fd_event_nocheck (EV_A_ fd, revents);
857} 1496}
858 1497
859/* make sure the external fd watch events are in-sync */ 1498/* make sure the external fd watch events are in-sync */
860/* with the kernel/libev internal state */ 1499/* with the kernel/libev internal state */
861inline_size void 1500inline_size void
862fd_reify (EV_P) 1501fd_reify (EV_P)
863{ 1502{
864 int i; 1503 int i;
865 1504
1505#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1506 for (i = 0; i < fdchangecnt; ++i)
1507 {
1508 int fd = fdchanges [i];
1509 ANFD *anfd = anfds + fd;
1510
1511 if (anfd->reify & EV__IOFDSET && anfd->head)
1512 {
1513 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1514
1515 if (handle != anfd->handle)
1516 {
1517 unsigned long arg;
1518
1519 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1520
1521 /* handle changed, but fd didn't - we need to do it in two steps */
1522 backend_modify (EV_A_ fd, anfd->events, 0);
1523 anfd->events = 0;
1524 anfd->handle = handle;
1525 }
1526 }
1527 }
1528#endif
1529
866 for (i = 0; i < fdchangecnt; ++i) 1530 for (i = 0; i < fdchangecnt; ++i)
867 { 1531 {
868 int fd = fdchanges [i]; 1532 int fd = fdchanges [i];
869 ANFD *anfd = anfds + fd; 1533 ANFD *anfd = anfds + fd;
870 ev_io *w; 1534 ev_io *w;
871 1535
872 unsigned char events = 0; 1536 unsigned char o_events = anfd->events;
1537 unsigned char o_reify = anfd->reify;
873 1538
874 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1539 anfd->reify = 0;
875 events |= (unsigned char)w->events;
876 1540
877#if EV_SELECT_IS_WINSOCKET 1541 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
878 if (events)
879 { 1542 {
880 unsigned long arg; 1543 anfd->events = 0;
881 #ifdef EV_FD_TO_WIN32_HANDLE 1544
882 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1545 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
883 #else 1546 anfd->events |= (unsigned char)w->events;
884 anfd->handle = _get_osfhandle (fd); 1547
885 #endif 1548 if (o_events != anfd->events)
886 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1549 o_reify = EV__IOFDSET; /* actually |= */
887 } 1550 }
888#endif
889 1551
890 { 1552 if (o_reify & EV__IOFDSET)
891 unsigned char o_events = anfd->events;
892 unsigned char o_reify = anfd->reify;
893
894 anfd->reify = 0;
895 anfd->events = events;
896
897 if (o_events != events || o_reify & EV__IOFDSET)
898 backend_modify (EV_A_ fd, o_events, events); 1553 backend_modify (EV_A_ fd, o_events, anfd->events);
899 }
900 } 1554 }
901 1555
902 fdchangecnt = 0; 1556 fdchangecnt = 0;
903} 1557}
904 1558
… …
916 fdchanges [fdchangecnt - 1] = fd; 1570 fdchanges [fdchangecnt - 1] = fd;
917 } 1571 }
918} 1572}
919 1573
920/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1574/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
921inline_speed void 1575inline_speed void ecb_cold
922fd_kill (EV_P_ int fd) 1576fd_kill (EV_P_ int fd)
923{ 1577{
924 ev_io *w; 1578 ev_io *w;
925 1579
926 while ((w = (ev_io *)anfds [fd].head)) 1580 while ((w = (ev_io *)anfds [fd].head))
… …
928 ev_io_stop (EV_A_ w); 1582 ev_io_stop (EV_A_ w);
929 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1583 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
930 } 1584 }
931} 1585}
932 1586
933/* check whether the given fd is atcually valid, for error recovery */ 1587/* check whether the given fd is actually valid, for error recovery */
934inline_size int 1588inline_size int ecb_cold
935fd_valid (int fd) 1589fd_valid (int fd)
936{ 1590{
937#ifdef _WIN32 1591#ifdef _WIN32
938 return _get_osfhandle (fd) != -1; 1592 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
939#else 1593#else
940 return fcntl (fd, F_GETFD) != -1; 1594 return fcntl (fd, F_GETFD) != -1;
941#endif 1595#endif
942} 1596}
943 1597
944/* called on EBADF to verify fds */ 1598/* called on EBADF to verify fds */
945static void noinline 1599static void noinline ecb_cold
946fd_ebadf (EV_P) 1600fd_ebadf (EV_P)
947{ 1601{
948 int fd; 1602 int fd;
949 1603
950 for (fd = 0; fd < anfdmax; ++fd) 1604 for (fd = 0; fd < anfdmax; ++fd)
… …
952 if (!fd_valid (fd) && errno == EBADF) 1606 if (!fd_valid (fd) && errno == EBADF)
953 fd_kill (EV_A_ fd); 1607 fd_kill (EV_A_ fd);
954} 1608}
955 1609
956/* called on ENOMEM in select/poll to kill some fds and retry */ 1610/* called on ENOMEM in select/poll to kill some fds and retry */
957static void noinline 1611static void noinline ecb_cold
958fd_enomem (EV_P) 1612fd_enomem (EV_P)
959{ 1613{
960 int fd; 1614 int fd;
961 1615
962 for (fd = anfdmax; fd--; ) 1616 for (fd = anfdmax; fd--; )
… …
980 anfds [fd].emask = 0; 1634 anfds [fd].emask = 0;
981 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1635 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
982 } 1636 }
983} 1637}
984 1638
1639/* used to prepare libev internal fd's */
1640/* this is not fork-safe */
1641inline_speed void
1642fd_intern (int fd)
1643{
1644#ifdef _WIN32
1645 unsigned long arg = 1;
1646 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1647#else
1648 fcntl (fd, F_SETFD, FD_CLOEXEC);
1649 fcntl (fd, F_SETFL, O_NONBLOCK);
1650#endif
1651}
1652
985/*****************************************************************************/ 1653/*****************************************************************************/
986 1654
987/* 1655/*
988 * the heap functions want a real array index. array index 0 uis guaranteed to not 1656 * the heap functions want a real array index. array index 0 is guaranteed to not
989 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1657 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
990 * the branching factor of the d-tree. 1658 * the branching factor of the d-tree.
991 */ 1659 */
992 1660
993/* 1661/*
… …
1141 1809
1142static ANSIG signals [EV_NSIG - 1]; 1810static ANSIG signals [EV_NSIG - 1];
1143 1811
1144/*****************************************************************************/ 1812/*****************************************************************************/
1145 1813
1146/* used to prepare libev internal fd's */ 1814#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1147/* this is not fork-safe */
1148inline_speed void
1149fd_intern (int fd)
1150{
1151#ifdef _WIN32
1152 unsigned long arg = 1;
1153 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1154#else
1155 fcntl (fd, F_SETFD, FD_CLOEXEC);
1156 fcntl (fd, F_SETFL, O_NONBLOCK);
1157#endif
1158}
1159 1815
1160static void noinline 1816static void noinline ecb_cold
1161evpipe_init (EV_P) 1817evpipe_init (EV_P)
1162{ 1818{
1163 if (!ev_is_active (&pipe_w)) 1819 if (!ev_is_active (&pipe_w))
1164 { 1820 {
1165#if EV_USE_EVENTFD 1821# if EV_USE_EVENTFD
1166 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1822 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1167 if (evfd < 0 && errno == EINVAL) 1823 if (evfd < 0 && errno == EINVAL)
1168 evfd = eventfd (0, 0); 1824 evfd = eventfd (0, 0);
1169 1825
1170 if (evfd >= 0) 1826 if (evfd >= 0)
… …
1172 evpipe [0] = -1; 1828 evpipe [0] = -1;
1173 fd_intern (evfd); /* doing it twice doesn't hurt */ 1829 fd_intern (evfd); /* doing it twice doesn't hurt */
1174 ev_io_set (&pipe_w, evfd, EV_READ); 1830 ev_io_set (&pipe_w, evfd, EV_READ);
1175 } 1831 }
1176 else 1832 else
1177#endif 1833# endif
1178 { 1834 {
1179 while (pipe (evpipe)) 1835 while (pipe (evpipe))
1180 ev_syserr ("(libev) error creating signal/async pipe"); 1836 ev_syserr ("(libev) error creating signal/async pipe");
1181 1837
1182 fd_intern (evpipe [0]); 1838 fd_intern (evpipe [0]);
… …
1187 ev_io_start (EV_A_ &pipe_w); 1843 ev_io_start (EV_A_ &pipe_w);
1188 ev_unref (EV_A); /* watcher should not keep loop alive */ 1844 ev_unref (EV_A); /* watcher should not keep loop alive */
1189 } 1845 }
1190} 1846}
1191 1847
1192inline_size void 1848inline_speed void
1193evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1849evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1194{ 1850{
1195 if (!*flag) 1851 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1852
1853 if (expect_true (*flag))
1854 return;
1855
1856 *flag = 1;
1857
1858 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1859
1860 pipe_write_skipped = 1;
1861
1862 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1863
1864 if (pipe_write_wanted)
1196 { 1865 {
1866 int old_errno;
1867
1868 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1869
1197 int old_errno = errno; /* save errno because write might clobber it */ 1870 old_errno = errno; /* save errno because write will clobber it */
1198
1199 *flag = 1;
1200 1871
1201#if EV_USE_EVENTFD 1872#if EV_USE_EVENTFD
1202 if (evfd >= 0) 1873 if (evfd >= 0)
1203 { 1874 {
1204 uint64_t counter = 1; 1875 uint64_t counter = 1;
1205 write (evfd, &counter, sizeof (uint64_t)); 1876 write (evfd, &counter, sizeof (uint64_t));
1206 } 1877 }
1207 else 1878 else
1208#endif 1879#endif
1880 {
1881#ifdef _WIN32
1882 WSABUF buf;
1883 DWORD sent;
1884 buf.buf = &buf;
1885 buf.len = 1;
1886 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1887#else
1209 write (evpipe [1], &old_errno, 1); 1888 write (evpipe [1], &(evpipe [1]), 1);
1889#endif
1890 }
1210 1891
1211 errno = old_errno; 1892 errno = old_errno;
1212 } 1893 }
1213} 1894}
1214 1895
… …
1217static void 1898static void
1218pipecb (EV_P_ ev_io *iow, int revents) 1899pipecb (EV_P_ ev_io *iow, int revents)
1219{ 1900{
1220 int i; 1901 int i;
1221 1902
1903 if (revents & EV_READ)
1904 {
1222#if EV_USE_EVENTFD 1905#if EV_USE_EVENTFD
1223 if (evfd >= 0) 1906 if (evfd >= 0)
1224 { 1907 {
1225 uint64_t counter; 1908 uint64_t counter;
1226 read (evfd, &counter, sizeof (uint64_t)); 1909 read (evfd, &counter, sizeof (uint64_t));
1227 } 1910 }
1228 else 1911 else
1229#endif 1912#endif
1230 { 1913 {
1231 char dummy; 1914 char dummy[4];
1915#ifdef _WIN32
1916 WSABUF buf;
1917 DWORD recvd;
1918 buf.buf = dummy;
1919 buf.len = sizeof (dummy);
1920 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, 0, 0, 0);
1921#else
1232 read (evpipe [0], &dummy, 1); 1922 read (evpipe [0], &dummy, sizeof (dummy));
1923#endif
1924 }
1233 } 1925 }
1234 1926
1927 pipe_write_skipped = 0;
1928
1929 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1930
1931#if EV_SIGNAL_ENABLE
1235 if (sig_pending) 1932 if (sig_pending)
1236 { 1933 {
1237 sig_pending = 0; 1934 sig_pending = 0;
1935
1936 ECB_MEMORY_FENCE_RELEASE;
1238 1937
1239 for (i = EV_NSIG - 1; i--; ) 1938 for (i = EV_NSIG - 1; i--; )
1240 if (expect_false (signals [i].pending)) 1939 if (expect_false (signals [i].pending))
1241 ev_feed_signal_event (EV_A_ i + 1); 1940 ev_feed_signal_event (EV_A_ i + 1);
1242 } 1941 }
1942#endif
1243 1943
1244#if EV_ASYNC_ENABLE 1944#if EV_ASYNC_ENABLE
1245 if (async_pending) 1945 if (async_pending)
1246 { 1946 {
1247 async_pending = 0; 1947 async_pending = 0;
1948
1949 ECB_MEMORY_FENCE_RELEASE;
1248 1950
1249 for (i = asynccnt; i--; ) 1951 for (i = asynccnt; i--; )
1250 if (asyncs [i]->sent) 1952 if (asyncs [i]->sent)
1251 { 1953 {
1252 asyncs [i]->sent = 0; 1954 asyncs [i]->sent = 0;
… …
1256#endif 1958#endif
1257} 1959}
1258 1960
1259/*****************************************************************************/ 1961/*****************************************************************************/
1260 1962
1963void
1964ev_feed_signal (int signum) EV_THROW
1965{
1966#if EV_MULTIPLICITY
1967 EV_P = signals [signum - 1].loop;
1968
1969 if (!EV_A)
1970 return;
1971#endif
1972
1973 if (!ev_active (&pipe_w))
1974 return;
1975
1976 signals [signum - 1].pending = 1;
1977 evpipe_write (EV_A_ &sig_pending);
1978}
1979
1261static void 1980static void
1262ev_sighandler (int signum) 1981ev_sighandler (int signum)
1263{ 1982{
1264#if EV_MULTIPLICITY
1265 EV_P = signals [signum - 1].loop;
1266#endif
1267
1268#if _WIN32 1983#ifdef _WIN32
1269 signal (signum, ev_sighandler); 1984 signal (signum, ev_sighandler);
1270#endif 1985#endif
1271 1986
1272 signals [signum - 1].pending = 1; 1987 ev_feed_signal (signum);
1273 evpipe_write (EV_A_ &sig_pending);
1274} 1988}
1275 1989
1276void noinline 1990void noinline
1277ev_feed_signal_event (EV_P_ int signum) 1991ev_feed_signal_event (EV_P_ int signum) EV_THROW
1278{ 1992{
1279 WL w; 1993 WL w;
1280 1994
1281 if (expect_false (signum <= 0 || signum > EV_NSIG)) 1995 if (expect_false (signum <= 0 || signum > EV_NSIG))
1282 return; 1996 return;
… …
1315 break; 2029 break;
1316 } 2030 }
1317} 2031}
1318#endif 2032#endif
1319 2033
2034#endif
2035
1320/*****************************************************************************/ 2036/*****************************************************************************/
1321 2037
2038#if EV_CHILD_ENABLE
1322static WL childs [EV_PID_HASHSIZE]; 2039static WL childs [EV_PID_HASHSIZE];
1323
1324#ifndef _WIN32
1325 2040
1326static ev_signal childev; 2041static ev_signal childev;
1327 2042
1328#ifndef WIFCONTINUED 2043#ifndef WIFCONTINUED
1329# define WIFCONTINUED(status) 0 2044# define WIFCONTINUED(status) 0
… …
1334child_reap (EV_P_ int chain, int pid, int status) 2049child_reap (EV_P_ int chain, int pid, int status)
1335{ 2050{
1336 ev_child *w; 2051 ev_child *w;
1337 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2052 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1338 2053
1339 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2054 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1340 { 2055 {
1341 if ((w->pid == pid || !w->pid) 2056 if ((w->pid == pid || !w->pid)
1342 && (!traced || (w->flags & 1))) 2057 && (!traced || (w->flags & 1)))
1343 { 2058 {
1344 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2059 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1369 /* make sure we are called again until all children have been reaped */ 2084 /* make sure we are called again until all children have been reaped */
1370 /* we need to do it this way so that the callback gets called before we continue */ 2085 /* we need to do it this way so that the callback gets called before we continue */
1371 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2086 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1372 2087
1373 child_reap (EV_A_ pid, pid, status); 2088 child_reap (EV_A_ pid, pid, status);
1374 if (EV_PID_HASHSIZE > 1) 2089 if ((EV_PID_HASHSIZE) > 1)
1375 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2090 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1376} 2091}
1377 2092
1378#endif 2093#endif
1379 2094
1380/*****************************************************************************/ 2095/*****************************************************************************/
1381 2096
2097#if EV_USE_IOCP
2098# include "ev_iocp.c"
2099#endif
1382#if EV_USE_PORT 2100#if EV_USE_PORT
1383# include "ev_port.c" 2101# include "ev_port.c"
1384#endif 2102#endif
1385#if EV_USE_KQUEUE 2103#if EV_USE_KQUEUE
1386# include "ev_kqueue.c" 2104# include "ev_kqueue.c"
… …
1393#endif 2111#endif
1394#if EV_USE_SELECT 2112#if EV_USE_SELECT
1395# include "ev_select.c" 2113# include "ev_select.c"
1396#endif 2114#endif
1397 2115
1398int 2116int ecb_cold
1399ev_version_major (void) 2117ev_version_major (void) EV_THROW
1400{ 2118{
1401 return EV_VERSION_MAJOR; 2119 return EV_VERSION_MAJOR;
1402} 2120}
1403 2121
1404int 2122int ecb_cold
1405ev_version_minor (void) 2123ev_version_minor (void) EV_THROW
1406{ 2124{
1407 return EV_VERSION_MINOR; 2125 return EV_VERSION_MINOR;
1408} 2126}
1409 2127
1410/* return true if we are running with elevated privileges and should ignore env variables */ 2128/* return true if we are running with elevated privileges and should ignore env variables */
1411int inline_size 2129int inline_size ecb_cold
1412enable_secure (void) 2130enable_secure (void)
1413{ 2131{
1414#ifdef _WIN32 2132#ifdef _WIN32
1415 return 0; 2133 return 0;
1416#else 2134#else
1417 return getuid () != geteuid () 2135 return getuid () != geteuid ()
1418 || getgid () != getegid (); 2136 || getgid () != getegid ();
1419#endif 2137#endif
1420} 2138}
1421 2139
1422unsigned int 2140unsigned int ecb_cold
1423ev_supported_backends (void) 2141ev_supported_backends (void) EV_THROW
1424{ 2142{
1425 unsigned int flags = 0; 2143 unsigned int flags = 0;
1426 2144
1427 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2145 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1428 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2146 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1431 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2149 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1432 2150
1433 return flags; 2151 return flags;
1434} 2152}
1435 2153
1436unsigned int 2154unsigned int ecb_cold
1437ev_recommended_backends (void) 2155ev_recommended_backends (void) EV_THROW
1438{ 2156{
1439 unsigned int flags = ev_supported_backends (); 2157 unsigned int flags = ev_supported_backends ();
1440 2158
1441#ifndef __NetBSD__ 2159#ifndef __NetBSD__
1442 /* kqueue is borked on everything but netbsd apparently */ 2160 /* kqueue is borked on everything but netbsd apparently */
… …
1446#ifdef __APPLE__ 2164#ifdef __APPLE__
1447 /* only select works correctly on that "unix-certified" platform */ 2165 /* only select works correctly on that "unix-certified" platform */
1448 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2166 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1449 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2167 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1450#endif 2168#endif
2169#ifdef __FreeBSD__
2170 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2171#endif
1451 2172
1452 return flags; 2173 return flags;
1453} 2174}
1454 2175
2176unsigned int ecb_cold
2177ev_embeddable_backends (void) EV_THROW
2178{
2179 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2180
2181 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2182 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2183 flags &= ~EVBACKEND_EPOLL;
2184
2185 return flags;
2186}
2187
1455unsigned int 2188unsigned int
1456ev_embeddable_backends (void) 2189ev_backend (EV_P) EV_THROW
1457{ 2190{
1458 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2191 return backend;
1459
1460 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1461 /* please fix it and tell me how to detect the fix */
1462 flags &= ~EVBACKEND_EPOLL;
1463
1464 return flags;
1465} 2192}
1466 2193
2194#if EV_FEATURE_API
1467unsigned int 2195unsigned int
1468ev_backend (EV_P) 2196ev_iteration (EV_P) EV_THROW
1469{ 2197{
1470 return backend; 2198 return loop_count;
1471} 2199}
1472 2200
1473#if EV_MINIMAL < 2
1474unsigned int 2201unsigned int
1475ev_loop_count (EV_P) 2202ev_depth (EV_P) EV_THROW
1476{
1477 return loop_count;
1478}
1479
1480unsigned int
1481ev_loop_depth (EV_P)
1482{ 2203{
1483 return loop_depth; 2204 return loop_depth;
1484} 2205}
1485 2206
1486void 2207void
1487ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2208ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1488{ 2209{
1489 io_blocktime = interval; 2210 io_blocktime = interval;
1490} 2211}
1491 2212
1492void 2213void
1493ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2214ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1494{ 2215{
1495 timeout_blocktime = interval; 2216 timeout_blocktime = interval;
1496} 2217}
1497 2218
1498void 2219void
1499ev_set_userdata (EV_P_ void *data) 2220ev_set_userdata (EV_P_ void *data) EV_THROW
1500{ 2221{
1501 userdata = data; 2222 userdata = data;
1502} 2223}
1503 2224
1504void * 2225void *
1505ev_userdata (EV_P) 2226ev_userdata (EV_P) EV_THROW
1506{ 2227{
1507 return userdata; 2228 return userdata;
1508} 2229}
1509 2230
2231void
1510void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2232ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1511{ 2233{
1512 invoke_cb = invoke_pending_cb; 2234 invoke_cb = invoke_pending_cb;
1513} 2235}
1514 2236
2237void
1515void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2238ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1516{ 2239{
1517 release_cb = release; 2240 release_cb = release;
1518 acquire_cb = acquire; 2241 acquire_cb = acquire;
1519} 2242}
1520#endif 2243#endif
1521 2244
1522/* initialise a loop structure, must be zero-initialised */ 2245/* initialise a loop structure, must be zero-initialised */
1523static void noinline 2246static void noinline ecb_cold
1524loop_init (EV_P_ unsigned int flags) 2247loop_init (EV_P_ unsigned int flags) EV_THROW
1525{ 2248{
1526 if (!backend) 2249 if (!backend)
1527 { 2250 {
2251 origflags = flags;
2252
1528#if EV_USE_REALTIME 2253#if EV_USE_REALTIME
1529 if (!have_realtime) 2254 if (!have_realtime)
1530 { 2255 {
1531 struct timespec ts; 2256 struct timespec ts;
1532 2257
… …
1554 if (!(flags & EVFLAG_NOENV) 2279 if (!(flags & EVFLAG_NOENV)
1555 && !enable_secure () 2280 && !enable_secure ()
1556 && getenv ("LIBEV_FLAGS")) 2281 && getenv ("LIBEV_FLAGS"))
1557 flags = atoi (getenv ("LIBEV_FLAGS")); 2282 flags = atoi (getenv ("LIBEV_FLAGS"));
1558 2283
1559 ev_rt_now = ev_time (); 2284 ev_rt_now = ev_time ();
1560 mn_now = get_clock (); 2285 mn_now = get_clock ();
1561 now_floor = mn_now; 2286 now_floor = mn_now;
1562 rtmn_diff = ev_rt_now - mn_now; 2287 rtmn_diff = ev_rt_now - mn_now;
1563#if EV_MINIMAL < 2 2288#if EV_FEATURE_API
1564 invoke_cb = ev_invoke_pending; 2289 invoke_cb = ev_invoke_pending;
1565#endif 2290#endif
1566 2291
1567 io_blocktime = 0.; 2292 io_blocktime = 0.;
1568 timeout_blocktime = 0.; 2293 timeout_blocktime = 0.;
1569 backend = 0; 2294 backend = 0;
1570 backend_fd = -1; 2295 backend_fd = -1;
1571 sig_pending = 0; 2296 sig_pending = 0;
1572#if EV_ASYNC_ENABLE 2297#if EV_ASYNC_ENABLE
1573 async_pending = 0; 2298 async_pending = 0;
1574#endif 2299#endif
2300 pipe_write_skipped = 0;
2301 pipe_write_wanted = 0;
1575#if EV_USE_INOTIFY 2302#if EV_USE_INOTIFY
1576 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2303 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1577#endif 2304#endif
1578#if EV_USE_SIGNALFD 2305#if EV_USE_SIGNALFD
1579 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2306 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1580#endif 2307#endif
1581 2308
1582 if (!(flags & 0x0000ffffU)) 2309 if (!(flags & EVBACKEND_MASK))
1583 flags |= ev_recommended_backends (); 2310 flags |= ev_recommended_backends ();
1584 2311
2312#if EV_USE_IOCP
2313 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2314#endif
1585#if EV_USE_PORT 2315#if EV_USE_PORT
1586 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2316 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1587#endif 2317#endif
1588#if EV_USE_KQUEUE 2318#if EV_USE_KQUEUE
1589 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2319 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1598 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2328 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1599#endif 2329#endif
1600 2330
1601 ev_prepare_init (&pending_w, pendingcb); 2331 ev_prepare_init (&pending_w, pendingcb);
1602 2332
2333#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1603 ev_init (&pipe_w, pipecb); 2334 ev_init (&pipe_w, pipecb);
1604 ev_set_priority (&pipe_w, EV_MAXPRI); 2335 ev_set_priority (&pipe_w, EV_MAXPRI);
2336#endif
1605 } 2337 }
1606} 2338}
1607 2339
1608/* free up a loop structure */ 2340/* free up a loop structure */
1609static void noinline 2341void ecb_cold
1610loop_destroy (EV_P) 2342ev_loop_destroy (EV_P)
1611{ 2343{
1612 int i; 2344 int i;
2345
2346#if EV_MULTIPLICITY
2347 /* mimic free (0) */
2348 if (!EV_A)
2349 return;
2350#endif
2351
2352#if EV_CLEANUP_ENABLE
2353 /* queue cleanup watchers (and execute them) */
2354 if (expect_false (cleanupcnt))
2355 {
2356 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2357 EV_INVOKE_PENDING;
2358 }
2359#endif
2360
2361#if EV_CHILD_ENABLE
2362 if (ev_is_active (&childev))
2363 {
2364 ev_ref (EV_A); /* child watcher */
2365 ev_signal_stop (EV_A_ &childev);
2366 }
2367#endif
1613 2368
1614 if (ev_is_active (&pipe_w)) 2369 if (ev_is_active (&pipe_w))
1615 { 2370 {
1616 /*ev_ref (EV_A);*/ 2371 /*ev_ref (EV_A);*/
1617 /*ev_io_stop (EV_A_ &pipe_w);*/ 2372 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1621 close (evfd); 2376 close (evfd);
1622#endif 2377#endif
1623 2378
1624 if (evpipe [0] >= 0) 2379 if (evpipe [0] >= 0)
1625 { 2380 {
1626 close (evpipe [0]); 2381 EV_WIN32_CLOSE_FD (evpipe [0]);
1627 close (evpipe [1]); 2382 EV_WIN32_CLOSE_FD (evpipe [1]);
1628 } 2383 }
1629 } 2384 }
1630 2385
1631#if EV_USE_SIGNALFD 2386#if EV_USE_SIGNALFD
1632 if (ev_is_active (&sigfd_w)) 2387 if (ev_is_active (&sigfd_w))
1633 {
1634 /*ev_ref (EV_A);*/
1635 /*ev_io_stop (EV_A_ &sigfd_w);*/
1636
1637 close (sigfd); 2388 close (sigfd);
1638 }
1639#endif 2389#endif
1640 2390
1641#if EV_USE_INOTIFY 2391#if EV_USE_INOTIFY
1642 if (fs_fd >= 0) 2392 if (fs_fd >= 0)
1643 close (fs_fd); 2393 close (fs_fd);
1644#endif 2394#endif
1645 2395
1646 if (backend_fd >= 0) 2396 if (backend_fd >= 0)
1647 close (backend_fd); 2397 close (backend_fd);
1648 2398
2399#if EV_USE_IOCP
2400 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2401#endif
1649#if EV_USE_PORT 2402#if EV_USE_PORT
1650 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2403 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1651#endif 2404#endif
1652#if EV_USE_KQUEUE 2405#if EV_USE_KQUEUE
1653 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2406 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1680 array_free (periodic, EMPTY); 2433 array_free (periodic, EMPTY);
1681#endif 2434#endif
1682#if EV_FORK_ENABLE 2435#if EV_FORK_ENABLE
1683 array_free (fork, EMPTY); 2436 array_free (fork, EMPTY);
1684#endif 2437#endif
2438#if EV_CLEANUP_ENABLE
2439 array_free (cleanup, EMPTY);
2440#endif
1685 array_free (prepare, EMPTY); 2441 array_free (prepare, EMPTY);
1686 array_free (check, EMPTY); 2442 array_free (check, EMPTY);
1687#if EV_ASYNC_ENABLE 2443#if EV_ASYNC_ENABLE
1688 array_free (async, EMPTY); 2444 array_free (async, EMPTY);
1689#endif 2445#endif
1690 2446
1691 backend = 0; 2447 backend = 0;
2448
2449#if EV_MULTIPLICITY
2450 if (ev_is_default_loop (EV_A))
2451#endif
2452 ev_default_loop_ptr = 0;
2453#if EV_MULTIPLICITY
2454 else
2455 ev_free (EV_A);
2456#endif
1692} 2457}
1693 2458
1694#if EV_USE_INOTIFY 2459#if EV_USE_INOTIFY
1695inline_size void infy_fork (EV_P); 2460inline_size void infy_fork (EV_P);
1696#endif 2461#endif
… …
1711 infy_fork (EV_A); 2476 infy_fork (EV_A);
1712#endif 2477#endif
1713 2478
1714 if (ev_is_active (&pipe_w)) 2479 if (ev_is_active (&pipe_w))
1715 { 2480 {
1716 /* this "locks" the handlers against writing to the pipe */ 2481 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1717 /* while we modify the fd vars */
1718 sig_pending = 1;
1719#if EV_ASYNC_ENABLE
1720 async_pending = 1;
1721#endif
1722 2482
1723 ev_ref (EV_A); 2483 ev_ref (EV_A);
1724 ev_io_stop (EV_A_ &pipe_w); 2484 ev_io_stop (EV_A_ &pipe_w);
1725 2485
1726#if EV_USE_EVENTFD 2486#if EV_USE_EVENTFD
… …
1728 close (evfd); 2488 close (evfd);
1729#endif 2489#endif
1730 2490
1731 if (evpipe [0] >= 0) 2491 if (evpipe [0] >= 0)
1732 { 2492 {
1733 close (evpipe [0]); 2493 EV_WIN32_CLOSE_FD (evpipe [0]);
1734 close (evpipe [1]); 2494 EV_WIN32_CLOSE_FD (evpipe [1]);
1735 } 2495 }
1736 2496
2497#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1737 evpipe_init (EV_A); 2498 evpipe_init (EV_A);
1738 /* now iterate over everything, in case we missed something */ 2499 /* now iterate over everything, in case we missed something */
1739 pipecb (EV_A_ &pipe_w, EV_READ); 2500 pipecb (EV_A_ &pipe_w, EV_READ);
2501#endif
1740 } 2502 }
1741 2503
1742 postfork = 0; 2504 postfork = 0;
1743} 2505}
1744 2506
1745#if EV_MULTIPLICITY 2507#if EV_MULTIPLICITY
1746 2508
1747struct ev_loop * 2509struct ev_loop * ecb_cold
1748ev_loop_new (unsigned int flags) 2510ev_loop_new (unsigned int flags) EV_THROW
1749{ 2511{
1750 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2512 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1751 2513
1752 memset (EV_A, 0, sizeof (struct ev_loop)); 2514 memset (EV_A, 0, sizeof (struct ev_loop));
1753 loop_init (EV_A_ flags); 2515 loop_init (EV_A_ flags);
1754 2516
1755 if (ev_backend (EV_A)) 2517 if (ev_backend (EV_A))
1756 return EV_A; 2518 return EV_A;
1757 2519
2520 ev_free (EV_A);
1758 return 0; 2521 return 0;
1759} 2522}
1760 2523
1761void
1762ev_loop_destroy (EV_P)
1763{
1764 loop_destroy (EV_A);
1765 ev_free (loop);
1766}
1767
1768void
1769ev_loop_fork (EV_P)
1770{
1771 postfork = 1; /* must be in line with ev_default_fork */
1772}
1773#endif /* multiplicity */ 2524#endif /* multiplicity */
1774 2525
1775#if EV_VERIFY 2526#if EV_VERIFY
1776static void noinline 2527static void noinline ecb_cold
1777verify_watcher (EV_P_ W w) 2528verify_watcher (EV_P_ W w)
1778{ 2529{
1779 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2530 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1780 2531
1781 if (w->pending) 2532 if (w->pending)
1782 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2533 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1783} 2534}
1784 2535
1785static void noinline 2536static void noinline ecb_cold
1786verify_heap (EV_P_ ANHE *heap, int N) 2537verify_heap (EV_P_ ANHE *heap, int N)
1787{ 2538{
1788 int i; 2539 int i;
1789 2540
1790 for (i = HEAP0; i < N + HEAP0; ++i) 2541 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1795 2546
1796 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2547 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1797 } 2548 }
1798} 2549}
1799 2550
1800static void noinline 2551static void noinline ecb_cold
1801array_verify (EV_P_ W *ws, int cnt) 2552array_verify (EV_P_ W *ws, int cnt)
1802{ 2553{
1803 while (cnt--) 2554 while (cnt--)
1804 { 2555 {
1805 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2556 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1806 verify_watcher (EV_A_ ws [cnt]); 2557 verify_watcher (EV_A_ ws [cnt]);
1807 } 2558 }
1808} 2559}
1809#endif 2560#endif
1810 2561
1811#if EV_MINIMAL < 2 2562#if EV_FEATURE_API
1812void 2563void ecb_cold
1813ev_loop_verify (EV_P) 2564ev_verify (EV_P) EV_THROW
1814{ 2565{
1815#if EV_VERIFY 2566#if EV_VERIFY
1816 int i; 2567 int i, j;
1817 WL w; 2568 WL w, w2;
1818 2569
1819 assert (activecnt >= -1); 2570 assert (activecnt >= -1);
1820 2571
1821 assert (fdchangemax >= fdchangecnt); 2572 assert (fdchangemax >= fdchangecnt);
1822 for (i = 0; i < fdchangecnt; ++i) 2573 for (i = 0; i < fdchangecnt; ++i)
1823 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2574 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1824 2575
1825 assert (anfdmax >= 0); 2576 assert (anfdmax >= 0);
1826 for (i = 0; i < anfdmax; ++i) 2577 for (i = j = 0; i < anfdmax; ++i)
1827 for (w = anfds [i].head; w; w = w->next) 2578 for (w = w2 = anfds [i].head; w; w = w->next)
1828 { 2579 {
1829 verify_watcher (EV_A_ (W)w); 2580 verify_watcher (EV_A_ (W)w);
2581
2582 if (++j & 1)
2583 w2 = w2->next;
2584
2585 assert (("libev: io watcher list contains a loop", w != w2));
1830 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2586 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1831 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2587 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1832 } 2588 }
1833 2589
1834 assert (timermax >= timercnt); 2590 assert (timermax >= timercnt);
… …
1852#if EV_FORK_ENABLE 2608#if EV_FORK_ENABLE
1853 assert (forkmax >= forkcnt); 2609 assert (forkmax >= forkcnt);
1854 array_verify (EV_A_ (W *)forks, forkcnt); 2610 array_verify (EV_A_ (W *)forks, forkcnt);
1855#endif 2611#endif
1856 2612
2613#if EV_CLEANUP_ENABLE
2614 assert (cleanupmax >= cleanupcnt);
2615 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2616#endif
2617
1857#if EV_ASYNC_ENABLE 2618#if EV_ASYNC_ENABLE
1858 assert (asyncmax >= asynccnt); 2619 assert (asyncmax >= asynccnt);
1859 array_verify (EV_A_ (W *)asyncs, asynccnt); 2620 array_verify (EV_A_ (W *)asyncs, asynccnt);
1860#endif 2621#endif
1861 2622
2623#if EV_PREPARE_ENABLE
1862 assert (preparemax >= preparecnt); 2624 assert (preparemax >= preparecnt);
1863 array_verify (EV_A_ (W *)prepares, preparecnt); 2625 array_verify (EV_A_ (W *)prepares, preparecnt);
2626#endif
1864 2627
2628#if EV_CHECK_ENABLE
1865 assert (checkmax >= checkcnt); 2629 assert (checkmax >= checkcnt);
1866 array_verify (EV_A_ (W *)checks, checkcnt); 2630 array_verify (EV_A_ (W *)checks, checkcnt);
2631#endif
1867 2632
1868# if 0 2633# if 0
2634#if EV_CHILD_ENABLE
1869 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2635 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1870 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2636 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2637#endif
1871# endif 2638# endif
1872#endif 2639#endif
1873} 2640}
1874#endif 2641#endif
1875 2642
1876#if EV_MULTIPLICITY 2643#if EV_MULTIPLICITY
1877struct ev_loop * 2644struct ev_loop * ecb_cold
1878ev_default_loop_init (unsigned int flags)
1879#else 2645#else
1880int 2646int
2647#endif
1881ev_default_loop (unsigned int flags) 2648ev_default_loop (unsigned int flags) EV_THROW
1882#endif
1883{ 2649{
1884 if (!ev_default_loop_ptr) 2650 if (!ev_default_loop_ptr)
1885 { 2651 {
1886#if EV_MULTIPLICITY 2652#if EV_MULTIPLICITY
1887 EV_P = ev_default_loop_ptr = &default_loop_struct; 2653 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1891 2657
1892 loop_init (EV_A_ flags); 2658 loop_init (EV_A_ flags);
1893 2659
1894 if (ev_backend (EV_A)) 2660 if (ev_backend (EV_A))
1895 { 2661 {
1896#ifndef _WIN32 2662#if EV_CHILD_ENABLE
1897 ev_signal_init (&childev, childcb, SIGCHLD); 2663 ev_signal_init (&childev, childcb, SIGCHLD);
1898 ev_set_priority (&childev, EV_MAXPRI); 2664 ev_set_priority (&childev, EV_MAXPRI);
1899 ev_signal_start (EV_A_ &childev); 2665 ev_signal_start (EV_A_ &childev);
1900 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2666 ev_unref (EV_A); /* child watcher should not keep loop alive */
1901#endif 2667#endif
… …
1906 2672
1907 return ev_default_loop_ptr; 2673 return ev_default_loop_ptr;
1908} 2674}
1909 2675
1910void 2676void
1911ev_default_destroy (void) 2677ev_loop_fork (EV_P) EV_THROW
1912{ 2678{
1913#if EV_MULTIPLICITY
1914 EV_P = ev_default_loop_ptr;
1915#endif
1916
1917 ev_default_loop_ptr = 0;
1918
1919#ifndef _WIN32
1920 ev_ref (EV_A); /* child watcher */
1921 ev_signal_stop (EV_A_ &childev);
1922#endif
1923
1924 loop_destroy (EV_A);
1925}
1926
1927void
1928ev_default_fork (void)
1929{
1930#if EV_MULTIPLICITY
1931 EV_P = ev_default_loop_ptr;
1932#endif
1933
1934 postfork = 1; /* must be in line with ev_loop_fork */ 2679 postfork = 1; /* must be in line with ev_default_fork */
1935} 2680}
1936 2681
1937/*****************************************************************************/ 2682/*****************************************************************************/
1938 2683
1939void 2684void
… …
1941{ 2686{
1942 EV_CB_INVOKE ((W)w, revents); 2687 EV_CB_INVOKE ((W)w, revents);
1943} 2688}
1944 2689
1945unsigned int 2690unsigned int
1946ev_pending_count (EV_P) 2691ev_pending_count (EV_P) EV_THROW
1947{ 2692{
1948 int pri; 2693 int pri;
1949 unsigned int count = 0; 2694 unsigned int count = 0;
1950 2695
1951 for (pri = NUMPRI; pri--; ) 2696 for (pri = NUMPRI; pri--; )
… …
1955} 2700}
1956 2701
1957void noinline 2702void noinline
1958ev_invoke_pending (EV_P) 2703ev_invoke_pending (EV_P)
1959{ 2704{
1960 int pri; 2705 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
1961
1962 for (pri = NUMPRI; pri--; )
1963 while (pendingcnt [pri]) 2706 while (pendingcnt [pendingpri])
1964 { 2707 {
1965 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2708 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1966
1967 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1968 /* ^ this is no longer true, as pending_w could be here */
1969 2709
1970 p->w->pending = 0; 2710 p->w->pending = 0;
1971 EV_CB_INVOKE (p->w, p->events); 2711 EV_CB_INVOKE (p->w, p->events);
1972 EV_FREQUENT_CHECK; 2712 EV_FREQUENT_CHECK;
1973 } 2713 }
… …
2030 EV_FREQUENT_CHECK; 2770 EV_FREQUENT_CHECK;
2031 feed_reverse (EV_A_ (W)w); 2771 feed_reverse (EV_A_ (W)w);
2032 } 2772 }
2033 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2773 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2034 2774
2035 feed_reverse_done (EV_A_ EV_TIMEOUT); 2775 feed_reverse_done (EV_A_ EV_TIMER);
2036 } 2776 }
2037} 2777}
2038 2778
2039#if EV_PERIODIC_ENABLE 2779#if EV_PERIODIC_ENABLE
2780
2781static void noinline
2782periodic_recalc (EV_P_ ev_periodic *w)
2783{
2784 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2785 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2786
2787 /* the above almost always errs on the low side */
2788 while (at <= ev_rt_now)
2789 {
2790 ev_tstamp nat = at + w->interval;
2791
2792 /* when resolution fails us, we use ev_rt_now */
2793 if (expect_false (nat == at))
2794 {
2795 at = ev_rt_now;
2796 break;
2797 }
2798
2799 at = nat;
2800 }
2801
2802 ev_at (w) = at;
2803}
2804
2040/* make periodics pending */ 2805/* make periodics pending */
2041inline_size void 2806inline_size void
2042periodics_reify (EV_P) 2807periodics_reify (EV_P)
2043{ 2808{
2044 EV_FREQUENT_CHECK; 2809 EV_FREQUENT_CHECK;
… …
2063 ANHE_at_cache (periodics [HEAP0]); 2828 ANHE_at_cache (periodics [HEAP0]);
2064 downheap (periodics, periodiccnt, HEAP0); 2829 downheap (periodics, periodiccnt, HEAP0);
2065 } 2830 }
2066 else if (w->interval) 2831 else if (w->interval)
2067 { 2832 {
2068 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2833 periodic_recalc (EV_A_ w);
2069 /* if next trigger time is not sufficiently in the future, put it there */
2070 /* this might happen because of floating point inexactness */
2071 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2072 {
2073 ev_at (w) += w->interval;
2074
2075 /* if interval is unreasonably low we might still have a time in the past */
2076 /* so correct this. this will make the periodic very inexact, but the user */
2077 /* has effectively asked to get triggered more often than possible */
2078 if (ev_at (w) < ev_rt_now)
2079 ev_at (w) = ev_rt_now;
2080 }
2081
2082 ANHE_at_cache (periodics [HEAP0]); 2834 ANHE_at_cache (periodics [HEAP0]);
2083 downheap (periodics, periodiccnt, HEAP0); 2835 downheap (periodics, periodiccnt, HEAP0);
2084 } 2836 }
2085 else 2837 else
2086 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2838 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2093 feed_reverse_done (EV_A_ EV_PERIODIC); 2845 feed_reverse_done (EV_A_ EV_PERIODIC);
2094 } 2846 }
2095} 2847}
2096 2848
2097/* simply recalculate all periodics */ 2849/* simply recalculate all periodics */
2098/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2850/* TODO: maybe ensure that at least one event happens when jumping forward? */
2099static void noinline 2851static void noinline ecb_cold
2100periodics_reschedule (EV_P) 2852periodics_reschedule (EV_P)
2101{ 2853{
2102 int i; 2854 int i;
2103 2855
2104 /* adjust periodics after time jump */ 2856 /* adjust periodics after time jump */
… …
2107 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2859 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2108 2860
2109 if (w->reschedule_cb) 2861 if (w->reschedule_cb)
2110 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2862 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2111 else if (w->interval) 2863 else if (w->interval)
2112 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2864 periodic_recalc (EV_A_ w);
2113 2865
2114 ANHE_at_cache (periodics [i]); 2866 ANHE_at_cache (periodics [i]);
2115 } 2867 }
2116 2868
2117 reheap (periodics, periodiccnt); 2869 reheap (periodics, periodiccnt);
2118} 2870}
2119#endif 2871#endif
2120 2872
2121/* adjust all timers by a given offset */ 2873/* adjust all timers by a given offset */
2122static void noinline 2874static void noinline ecb_cold
2123timers_reschedule (EV_P_ ev_tstamp adjust) 2875timers_reschedule (EV_P_ ev_tstamp adjust)
2124{ 2876{
2125 int i; 2877 int i;
2126 2878
2127 for (i = 0; i < timercnt; ++i) 2879 for (i = 0; i < timercnt; ++i)
… …
2131 ANHE_at_cache (*he); 2883 ANHE_at_cache (*he);
2132 } 2884 }
2133} 2885}
2134 2886
2135/* fetch new monotonic and realtime times from the kernel */ 2887/* fetch new monotonic and realtime times from the kernel */
2136/* also detetc if there was a timejump, and act accordingly */ 2888/* also detect if there was a timejump, and act accordingly */
2137inline_speed void 2889inline_speed void
2138time_update (EV_P_ ev_tstamp max_block) 2890time_update (EV_P_ ev_tstamp max_block)
2139{ 2891{
2140#if EV_USE_MONOTONIC 2892#if EV_USE_MONOTONIC
2141 if (expect_true (have_monotonic)) 2893 if (expect_true (have_monotonic))
… …
2164 * doesn't hurt either as we only do this on time-jumps or 2916 * doesn't hurt either as we only do this on time-jumps or
2165 * in the unlikely event of having been preempted here. 2917 * in the unlikely event of having been preempted here.
2166 */ 2918 */
2167 for (i = 4; --i; ) 2919 for (i = 4; --i; )
2168 { 2920 {
2921 ev_tstamp diff;
2169 rtmn_diff = ev_rt_now - mn_now; 2922 rtmn_diff = ev_rt_now - mn_now;
2170 2923
2924 diff = odiff - rtmn_diff;
2925
2171 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2926 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2172 return; /* all is well */ 2927 return; /* all is well */
2173 2928
2174 ev_rt_now = ev_time (); 2929 ev_rt_now = ev_time ();
2175 mn_now = get_clock (); 2930 mn_now = get_clock ();
2176 now_floor = mn_now; 2931 now_floor = mn_now;
… …
2198 2953
2199 mn_now = ev_rt_now; 2954 mn_now = ev_rt_now;
2200 } 2955 }
2201} 2956}
2202 2957
2203void 2958int
2204ev_loop (EV_P_ int flags) 2959ev_run (EV_P_ int flags)
2205{ 2960{
2206#if EV_MINIMAL < 2 2961#if EV_FEATURE_API
2207 ++loop_depth; 2962 ++loop_depth;
2208#endif 2963#endif
2209 2964
2210 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2965 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2211 2966
2212 loop_done = EVUNLOOP_CANCEL; 2967 loop_done = EVBREAK_CANCEL;
2213 2968
2214 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2969 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2215 2970
2216 do 2971 do
2217 { 2972 {
2218#if EV_VERIFY >= 2 2973#if EV_VERIFY >= 2
2219 ev_loop_verify (EV_A); 2974 ev_verify (EV_A);
2220#endif 2975#endif
2221 2976
2222#ifndef _WIN32 2977#ifndef _WIN32
2223 if (expect_false (curpid)) /* penalise the forking check even more */ 2978 if (expect_false (curpid)) /* penalise the forking check even more */
2224 if (expect_false (getpid () != curpid)) 2979 if (expect_false (getpid () != curpid))
… …
2236 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2991 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2237 EV_INVOKE_PENDING; 2992 EV_INVOKE_PENDING;
2238 } 2993 }
2239#endif 2994#endif
2240 2995
2996#if EV_PREPARE_ENABLE
2241 /* queue prepare watchers (and execute them) */ 2997 /* queue prepare watchers (and execute them) */
2242 if (expect_false (preparecnt)) 2998 if (expect_false (preparecnt))
2243 { 2999 {
2244 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3000 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2245 EV_INVOKE_PENDING; 3001 EV_INVOKE_PENDING;
2246 } 3002 }
3003#endif
2247 3004
2248 if (expect_false (loop_done)) 3005 if (expect_false (loop_done))
2249 break; 3006 break;
2250 3007
2251 /* we might have forked, so reify kernel state if necessary */ 3008 /* we might have forked, so reify kernel state if necessary */
… …
2258 /* calculate blocking time */ 3015 /* calculate blocking time */
2259 { 3016 {
2260 ev_tstamp waittime = 0.; 3017 ev_tstamp waittime = 0.;
2261 ev_tstamp sleeptime = 0.; 3018 ev_tstamp sleeptime = 0.;
2262 3019
3020 /* remember old timestamp for io_blocktime calculation */
3021 ev_tstamp prev_mn_now = mn_now;
3022
3023 /* update time to cancel out callback processing overhead */
3024 time_update (EV_A_ 1e100);
3025
3026 /* from now on, we want a pipe-wake-up */
3027 pipe_write_wanted = 1;
3028
3029 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3030
2263 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3031 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2264 { 3032 {
2265 /* remember old timestamp for io_blocktime calculation */
2266 ev_tstamp prev_mn_now = mn_now;
2267
2268 /* update time to cancel out callback processing overhead */
2269 time_update (EV_A_ 1e100);
2270
2271 waittime = MAX_BLOCKTIME; 3033 waittime = MAX_BLOCKTIME;
2272 3034
2273 if (timercnt) 3035 if (timercnt)
2274 { 3036 {
2275 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3037 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2276 if (waittime > to) waittime = to; 3038 if (waittime > to) waittime = to;
2277 } 3039 }
2278 3040
2279#if EV_PERIODIC_ENABLE 3041#if EV_PERIODIC_ENABLE
2280 if (periodiccnt) 3042 if (periodiccnt)
2281 { 3043 {
2282 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3044 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2283 if (waittime > to) waittime = to; 3045 if (waittime > to) waittime = to;
2284 } 3046 }
2285#endif 3047#endif
2286 3048
2287 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3049 /* don't let timeouts decrease the waittime below timeout_blocktime */
2288 if (expect_false (waittime < timeout_blocktime)) 3050 if (expect_false (waittime < timeout_blocktime))
2289 waittime = timeout_blocktime; 3051 waittime = timeout_blocktime;
3052
3053 /* at this point, we NEED to wait, so we have to ensure */
3054 /* to pass a minimum nonzero value to the backend */
3055 if (expect_false (waittime < backend_mintime))
3056 waittime = backend_mintime;
2290 3057
2291 /* extra check because io_blocktime is commonly 0 */ 3058 /* extra check because io_blocktime is commonly 0 */
2292 if (expect_false (io_blocktime)) 3059 if (expect_false (io_blocktime))
2293 { 3060 {
2294 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3061 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2295 3062
2296 if (sleeptime > waittime - backend_fudge) 3063 if (sleeptime > waittime - backend_mintime)
2297 sleeptime = waittime - backend_fudge; 3064 sleeptime = waittime - backend_mintime;
2298 3065
2299 if (expect_true (sleeptime > 0.)) 3066 if (expect_true (sleeptime > 0.))
2300 { 3067 {
2301 ev_sleep (sleeptime); 3068 ev_sleep (sleeptime);
2302 waittime -= sleeptime; 3069 waittime -= sleeptime;
2303 } 3070 }
2304 } 3071 }
2305 } 3072 }
2306 3073
2307#if EV_MINIMAL < 2 3074#if EV_FEATURE_API
2308 ++loop_count; 3075 ++loop_count;
2309#endif 3076#endif
2310 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3077 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2311 backend_poll (EV_A_ waittime); 3078 backend_poll (EV_A_ waittime);
2312 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3079 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3080
3081 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3082
3083 if (pipe_write_skipped)
3084 {
3085 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3086 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3087 }
3088
2313 3089
2314 /* update ev_rt_now, do magic */ 3090 /* update ev_rt_now, do magic */
2315 time_update (EV_A_ waittime + sleeptime); 3091 time_update (EV_A_ waittime + sleeptime);
2316 } 3092 }
2317 3093
… …
2324#if EV_IDLE_ENABLE 3100#if EV_IDLE_ENABLE
2325 /* queue idle watchers unless other events are pending */ 3101 /* queue idle watchers unless other events are pending */
2326 idle_reify (EV_A); 3102 idle_reify (EV_A);
2327#endif 3103#endif
2328 3104
3105#if EV_CHECK_ENABLE
2329 /* queue check watchers, to be executed first */ 3106 /* queue check watchers, to be executed first */
2330 if (expect_false (checkcnt)) 3107 if (expect_false (checkcnt))
2331 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3108 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3109#endif
2332 3110
2333 EV_INVOKE_PENDING; 3111 EV_INVOKE_PENDING;
2334 } 3112 }
2335 while (expect_true ( 3113 while (expect_true (
2336 activecnt 3114 activecnt
2337 && !loop_done 3115 && !loop_done
2338 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3116 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2339 )); 3117 ));
2340 3118
2341 if (loop_done == EVUNLOOP_ONE) 3119 if (loop_done == EVBREAK_ONE)
2342 loop_done = EVUNLOOP_CANCEL; 3120 loop_done = EVBREAK_CANCEL;
2343 3121
2344#if EV_MINIMAL < 2 3122#if EV_FEATURE_API
2345 --loop_depth; 3123 --loop_depth;
2346#endif 3124#endif
3125
3126 return activecnt;
2347} 3127}
2348 3128
2349void 3129void
2350ev_unloop (EV_P_ int how) 3130ev_break (EV_P_ int how) EV_THROW
2351{ 3131{
2352 loop_done = how; 3132 loop_done = how;
2353} 3133}
2354 3134
2355void 3135void
2356ev_ref (EV_P) 3136ev_ref (EV_P) EV_THROW
2357{ 3137{
2358 ++activecnt; 3138 ++activecnt;
2359} 3139}
2360 3140
2361void 3141void
2362ev_unref (EV_P) 3142ev_unref (EV_P) EV_THROW
2363{ 3143{
2364 --activecnt; 3144 --activecnt;
2365} 3145}
2366 3146
2367void 3147void
2368ev_now_update (EV_P) 3148ev_now_update (EV_P) EV_THROW
2369{ 3149{
2370 time_update (EV_A_ 1e100); 3150 time_update (EV_A_ 1e100);
2371} 3151}
2372 3152
2373void 3153void
2374ev_suspend (EV_P) 3154ev_suspend (EV_P) EV_THROW
2375{ 3155{
2376 ev_now_update (EV_A); 3156 ev_now_update (EV_A);
2377} 3157}
2378 3158
2379void 3159void
2380ev_resume (EV_P) 3160ev_resume (EV_P) EV_THROW
2381{ 3161{
2382 ev_tstamp mn_prev = mn_now; 3162 ev_tstamp mn_prev = mn_now;
2383 3163
2384 ev_now_update (EV_A); 3164 ev_now_update (EV_A);
2385 timers_reschedule (EV_A_ mn_now - mn_prev); 3165 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2424 w->pending = 0; 3204 w->pending = 0;
2425 } 3205 }
2426} 3206}
2427 3207
2428int 3208int
2429ev_clear_pending (EV_P_ void *w) 3209ev_clear_pending (EV_P_ void *w) EV_THROW
2430{ 3210{
2431 W w_ = (W)w; 3211 W w_ = (W)w;
2432 int pending = w_->pending; 3212 int pending = w_->pending;
2433 3213
2434 if (expect_true (pending)) 3214 if (expect_true (pending))
… …
2467} 3247}
2468 3248
2469/*****************************************************************************/ 3249/*****************************************************************************/
2470 3250
2471void noinline 3251void noinline
2472ev_io_start (EV_P_ ev_io *w) 3252ev_io_start (EV_P_ ev_io *w) EV_THROW
2473{ 3253{
2474 int fd = w->fd; 3254 int fd = w->fd;
2475 3255
2476 if (expect_false (ev_is_active (w))) 3256 if (expect_false (ev_is_active (w)))
2477 return; 3257 return;
2478 3258
2479 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3259 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2480 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3260 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2481 3261
2482 EV_FREQUENT_CHECK; 3262 EV_FREQUENT_CHECK;
2483 3263
2484 ev_start (EV_A_ (W)w, 1); 3264 ev_start (EV_A_ (W)w, 1);
2485 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3265 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2486 wlist_add (&anfds[fd].head, (WL)w); 3266 wlist_add (&anfds[fd].head, (WL)w);
2487 3267
3268 /* common bug, apparently */
3269 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3270
2488 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3271 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2489 w->events &= ~EV__IOFDSET; 3272 w->events &= ~EV__IOFDSET;
2490 3273
2491 EV_FREQUENT_CHECK; 3274 EV_FREQUENT_CHECK;
2492} 3275}
2493 3276
2494void noinline 3277void noinline
2495ev_io_stop (EV_P_ ev_io *w) 3278ev_io_stop (EV_P_ ev_io *w) EV_THROW
2496{ 3279{
2497 clear_pending (EV_A_ (W)w); 3280 clear_pending (EV_A_ (W)w);
2498 if (expect_false (!ev_is_active (w))) 3281 if (expect_false (!ev_is_active (w)))
2499 return; 3282 return;
2500 3283
… …
2503 EV_FREQUENT_CHECK; 3286 EV_FREQUENT_CHECK;
2504 3287
2505 wlist_del (&anfds[w->fd].head, (WL)w); 3288 wlist_del (&anfds[w->fd].head, (WL)w);
2506 ev_stop (EV_A_ (W)w); 3289 ev_stop (EV_A_ (W)w);
2507 3290
2508 fd_change (EV_A_ w->fd, 1); 3291 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2509 3292
2510 EV_FREQUENT_CHECK; 3293 EV_FREQUENT_CHECK;
2511} 3294}
2512 3295
2513void noinline 3296void noinline
2514ev_timer_start (EV_P_ ev_timer *w) 3297ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2515{ 3298{
2516 if (expect_false (ev_is_active (w))) 3299 if (expect_false (ev_is_active (w)))
2517 return; 3300 return;
2518 3301
2519 ev_at (w) += mn_now; 3302 ev_at (w) += mn_now;
… …
2533 3316
2534 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3317 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2535} 3318}
2536 3319
2537void noinline 3320void noinline
2538ev_timer_stop (EV_P_ ev_timer *w) 3321ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2539{ 3322{
2540 clear_pending (EV_A_ (W)w); 3323 clear_pending (EV_A_ (W)w);
2541 if (expect_false (!ev_is_active (w))) 3324 if (expect_false (!ev_is_active (w)))
2542 return; 3325 return;
2543 3326
… …
2555 timers [active] = timers [timercnt + HEAP0]; 3338 timers [active] = timers [timercnt + HEAP0];
2556 adjustheap (timers, timercnt, active); 3339 adjustheap (timers, timercnt, active);
2557 } 3340 }
2558 } 3341 }
2559 3342
2560 EV_FREQUENT_CHECK;
2561
2562 ev_at (w) -= mn_now; 3343 ev_at (w) -= mn_now;
2563 3344
2564 ev_stop (EV_A_ (W)w); 3345 ev_stop (EV_A_ (W)w);
3346
3347 EV_FREQUENT_CHECK;
2565} 3348}
2566 3349
2567void noinline 3350void noinline
2568ev_timer_again (EV_P_ ev_timer *w) 3351ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2569{ 3352{
2570 EV_FREQUENT_CHECK; 3353 EV_FREQUENT_CHECK;
3354
3355 clear_pending (EV_A_ (W)w);
2571 3356
2572 if (ev_is_active (w)) 3357 if (ev_is_active (w))
2573 { 3358 {
2574 if (w->repeat) 3359 if (w->repeat)
2575 { 3360 {
… …
2588 3373
2589 EV_FREQUENT_CHECK; 3374 EV_FREQUENT_CHECK;
2590} 3375}
2591 3376
2592ev_tstamp 3377ev_tstamp
2593ev_timer_remaining (EV_P_ ev_timer *w) 3378ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2594{ 3379{
2595 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3380 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2596} 3381}
2597 3382
2598#if EV_PERIODIC_ENABLE 3383#if EV_PERIODIC_ENABLE
2599void noinline 3384void noinline
2600ev_periodic_start (EV_P_ ev_periodic *w) 3385ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2601{ 3386{
2602 if (expect_false (ev_is_active (w))) 3387 if (expect_false (ev_is_active (w)))
2603 return; 3388 return;
2604 3389
2605 if (w->reschedule_cb) 3390 if (w->reschedule_cb)
2606 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3391 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2607 else if (w->interval) 3392 else if (w->interval)
2608 { 3393 {
2609 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3394 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2610 /* this formula differs from the one in periodic_reify because we do not always round up */ 3395 periodic_recalc (EV_A_ w);
2611 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2612 } 3396 }
2613 else 3397 else
2614 ev_at (w) = w->offset; 3398 ev_at (w) = w->offset;
2615 3399
2616 EV_FREQUENT_CHECK; 3400 EV_FREQUENT_CHECK;
… …
2626 3410
2627 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3411 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2628} 3412}
2629 3413
2630void noinline 3414void noinline
2631ev_periodic_stop (EV_P_ ev_periodic *w) 3415ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2632{ 3416{
2633 clear_pending (EV_A_ (W)w); 3417 clear_pending (EV_A_ (W)w);
2634 if (expect_false (!ev_is_active (w))) 3418 if (expect_false (!ev_is_active (w)))
2635 return; 3419 return;
2636 3420
… …
2648 periodics [active] = periodics [periodiccnt + HEAP0]; 3432 periodics [active] = periodics [periodiccnt + HEAP0];
2649 adjustheap (periodics, periodiccnt, active); 3433 adjustheap (periodics, periodiccnt, active);
2650 } 3434 }
2651 } 3435 }
2652 3436
2653 EV_FREQUENT_CHECK;
2654
2655 ev_stop (EV_A_ (W)w); 3437 ev_stop (EV_A_ (W)w);
3438
3439 EV_FREQUENT_CHECK;
2656} 3440}
2657 3441
2658void noinline 3442void noinline
2659ev_periodic_again (EV_P_ ev_periodic *w) 3443ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2660{ 3444{
2661 /* TODO: use adjustheap and recalculation */ 3445 /* TODO: use adjustheap and recalculation */
2662 ev_periodic_stop (EV_A_ w); 3446 ev_periodic_stop (EV_A_ w);
2663 ev_periodic_start (EV_A_ w); 3447 ev_periodic_start (EV_A_ w);
2664} 3448}
… …
2666 3450
2667#ifndef SA_RESTART 3451#ifndef SA_RESTART
2668# define SA_RESTART 0 3452# define SA_RESTART 0
2669#endif 3453#endif
2670 3454
3455#if EV_SIGNAL_ENABLE
3456
2671void noinline 3457void noinline
2672ev_signal_start (EV_P_ ev_signal *w) 3458ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2673{ 3459{
2674 if (expect_false (ev_is_active (w))) 3460 if (expect_false (ev_is_active (w)))
2675 return; 3461 return;
2676 3462
2677 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3463 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2721 if (!((WL)w)->next) 3507 if (!((WL)w)->next)
2722# if EV_USE_SIGNALFD 3508# if EV_USE_SIGNALFD
2723 if (sigfd < 0) /*TODO*/ 3509 if (sigfd < 0) /*TODO*/
2724# endif 3510# endif
2725 { 3511 {
2726# if _WIN32 3512# ifdef _WIN32
3513 evpipe_init (EV_A);
3514
2727 signal (w->signum, ev_sighandler); 3515 signal (w->signum, ev_sighandler);
2728# else 3516# else
2729 struct sigaction sa; 3517 struct sigaction sa;
2730 3518
2731 evpipe_init (EV_A); 3519 evpipe_init (EV_A);
… …
2733 sa.sa_handler = ev_sighandler; 3521 sa.sa_handler = ev_sighandler;
2734 sigfillset (&sa.sa_mask); 3522 sigfillset (&sa.sa_mask);
2735 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3523 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2736 sigaction (w->signum, &sa, 0); 3524 sigaction (w->signum, &sa, 0);
2737 3525
3526 if (origflags & EVFLAG_NOSIGMASK)
3527 {
2738 sigemptyset (&sa.sa_mask); 3528 sigemptyset (&sa.sa_mask);
2739 sigaddset (&sa.sa_mask, w->signum); 3529 sigaddset (&sa.sa_mask, w->signum);
2740 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3530 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3531 }
2741#endif 3532#endif
2742 } 3533 }
2743 3534
2744 EV_FREQUENT_CHECK; 3535 EV_FREQUENT_CHECK;
2745} 3536}
2746 3537
2747void noinline 3538void noinline
2748ev_signal_stop (EV_P_ ev_signal *w) 3539ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2749{ 3540{
2750 clear_pending (EV_A_ (W)w); 3541 clear_pending (EV_A_ (W)w);
2751 if (expect_false (!ev_is_active (w))) 3542 if (expect_false (!ev_is_active (w)))
2752 return; 3543 return;
2753 3544
… …
2762 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3553 signals [w->signum - 1].loop = 0; /* unattach from signal */
2763#endif 3554#endif
2764#if EV_USE_SIGNALFD 3555#if EV_USE_SIGNALFD
2765 if (sigfd >= 0) 3556 if (sigfd >= 0)
2766 { 3557 {
2767 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3558 sigset_t ss;
3559
3560 sigemptyset (&ss);
3561 sigaddset (&ss, w->signum);
2768 sigdelset (&sigfd_set, w->signum); 3562 sigdelset (&sigfd_set, w->signum);
3563
2769 signalfd (sigfd, &sigfd_set, 0); 3564 signalfd (sigfd, &sigfd_set, 0);
2770 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3565 sigprocmask (SIG_UNBLOCK, &ss, 0);
2771 /*TODO: maybe unblock signal? */
2772 } 3566 }
2773 else 3567 else
2774#endif 3568#endif
2775 signal (w->signum, SIG_DFL); 3569 signal (w->signum, SIG_DFL);
2776 } 3570 }
2777 3571
2778 EV_FREQUENT_CHECK; 3572 EV_FREQUENT_CHECK;
2779} 3573}
2780 3574
3575#endif
3576
3577#if EV_CHILD_ENABLE
3578
2781void 3579void
2782ev_child_start (EV_P_ ev_child *w) 3580ev_child_start (EV_P_ ev_child *w) EV_THROW
2783{ 3581{
2784#if EV_MULTIPLICITY 3582#if EV_MULTIPLICITY
2785 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3583 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2786#endif 3584#endif
2787 if (expect_false (ev_is_active (w))) 3585 if (expect_false (ev_is_active (w)))
2788 return; 3586 return;
2789 3587
2790 EV_FREQUENT_CHECK; 3588 EV_FREQUENT_CHECK;
2791 3589
2792 ev_start (EV_A_ (W)w, 1); 3590 ev_start (EV_A_ (W)w, 1);
2793 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3591 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2794 3592
2795 EV_FREQUENT_CHECK; 3593 EV_FREQUENT_CHECK;
2796} 3594}
2797 3595
2798void 3596void
2799ev_child_stop (EV_P_ ev_child *w) 3597ev_child_stop (EV_P_ ev_child *w) EV_THROW
2800{ 3598{
2801 clear_pending (EV_A_ (W)w); 3599 clear_pending (EV_A_ (W)w);
2802 if (expect_false (!ev_is_active (w))) 3600 if (expect_false (!ev_is_active (w)))
2803 return; 3601 return;
2804 3602
2805 EV_FREQUENT_CHECK; 3603 EV_FREQUENT_CHECK;
2806 3604
2807 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3605 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2808 ev_stop (EV_A_ (W)w); 3606 ev_stop (EV_A_ (W)w);
2809 3607
2810 EV_FREQUENT_CHECK; 3608 EV_FREQUENT_CHECK;
2811} 3609}
3610
3611#endif
2812 3612
2813#if EV_STAT_ENABLE 3613#if EV_STAT_ENABLE
2814 3614
2815# ifdef _WIN32 3615# ifdef _WIN32
2816# undef lstat 3616# undef lstat
… …
2822#define MIN_STAT_INTERVAL 0.1074891 3622#define MIN_STAT_INTERVAL 0.1074891
2823 3623
2824static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3624static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2825 3625
2826#if EV_USE_INOTIFY 3626#if EV_USE_INOTIFY
2827# define EV_INOTIFY_BUFSIZE 8192 3627
3628/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3629# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2828 3630
2829static void noinline 3631static void noinline
2830infy_add (EV_P_ ev_stat *w) 3632infy_add (EV_P_ ev_stat *w)
2831{ 3633{
2832 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3634 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);
2833 3635
2834 if (w->wd < 0) 3636 if (w->wd >= 0)
3637 {
3638 struct statfs sfs;
3639
3640 /* now local changes will be tracked by inotify, but remote changes won't */
3641 /* unless the filesystem is known to be local, we therefore still poll */
3642 /* also do poll on <2.6.25, but with normal frequency */
3643
3644 if (!fs_2625)
3645 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3646 else if (!statfs (w->path, &sfs)
3647 && (sfs.f_type == 0x1373 /* devfs */
3648 || sfs.f_type == 0xEF53 /* ext2/3 */
3649 || sfs.f_type == 0x3153464a /* jfs */
3650 || sfs.f_type == 0x52654973 /* reiser3 */
3651 || sfs.f_type == 0x01021994 /* tempfs */
3652 || sfs.f_type == 0x58465342 /* xfs */))
3653 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3654 else
3655 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2835 { 3656 }
3657 else
3658 {
3659 /* can't use inotify, continue to stat */
2836 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3660 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2837 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2838 3661
2839 /* monitor some parent directory for speedup hints */ 3662 /* if path is not there, monitor some parent directory for speedup hints */
2840 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3663 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2841 /* but an efficiency issue only */ 3664 /* but an efficiency issue only */
2842 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3665 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2843 { 3666 {
2844 char path [4096]; 3667 char path [4096];
… …
2854 if (!pend || pend == path) 3677 if (!pend || pend == path)
2855 break; 3678 break;
2856 3679
2857 *pend = 0; 3680 *pend = 0;
2858 w->wd = inotify_add_watch (fs_fd, path, mask); 3681 w->wd = inotify_add_watch (fs_fd, path, mask);
2859 } 3682 }
2860 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3683 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2861 } 3684 }
2862 } 3685 }
2863 3686
2864 if (w->wd >= 0) 3687 if (w->wd >= 0)
2865 {
2866 struct statfs sfs;
2867
2868 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3688 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2869 3689
2870 /* now local changes will be tracked by inotify, but remote changes won't */ 3690 /* now re-arm timer, if required */
2871 /* unless the filesystem it known to be local, we therefore still poll */ 3691 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2872 /* also do poll on <2.6.25, but with normal frequency */
2873
2874 if (fs_2625 && !statfs (w->path, &sfs))
2875 if (sfs.f_type == 0x1373 /* devfs */
2876 || sfs.f_type == 0xEF53 /* ext2/3 */
2877 || sfs.f_type == 0x3153464a /* jfs */
2878 || sfs.f_type == 0x52654973 /* reiser3 */
2879 || sfs.f_type == 0x01021994 /* tempfs */
2880 || sfs.f_type == 0x58465342 /* xfs */)
2881 return;
2882
2883 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2884 ev_timer_again (EV_A_ &w->timer); 3692 ev_timer_again (EV_A_ &w->timer);
2885 } 3693 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2886} 3694}
2887 3695
2888static void noinline 3696static void noinline
2889infy_del (EV_P_ ev_stat *w) 3697infy_del (EV_P_ ev_stat *w)
2890{ 3698{
… …
2893 3701
2894 if (wd < 0) 3702 if (wd < 0)
2895 return; 3703 return;
2896 3704
2897 w->wd = -2; 3705 w->wd = -2;
2898 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3706 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2899 wlist_del (&fs_hash [slot].head, (WL)w); 3707 wlist_del (&fs_hash [slot].head, (WL)w);
2900 3708
2901 /* remove this watcher, if others are watching it, they will rearm */ 3709 /* remove this watcher, if others are watching it, they will rearm */
2902 inotify_rm_watch (fs_fd, wd); 3710 inotify_rm_watch (fs_fd, wd);
2903} 3711}
… …
2905static void noinline 3713static void noinline
2906infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3714infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2907{ 3715{
2908 if (slot < 0) 3716 if (slot < 0)
2909 /* overflow, need to check for all hash slots */ 3717 /* overflow, need to check for all hash slots */
2910 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3718 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2911 infy_wd (EV_A_ slot, wd, ev); 3719 infy_wd (EV_A_ slot, wd, ev);
2912 else 3720 else
2913 { 3721 {
2914 WL w_; 3722 WL w_;
2915 3723
2916 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3724 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2917 { 3725 {
2918 ev_stat *w = (ev_stat *)w_; 3726 ev_stat *w = (ev_stat *)w_;
2919 w_ = w_->next; /* lets us remove this watcher and all before it */ 3727 w_ = w_->next; /* lets us remove this watcher and all before it */
2920 3728
2921 if (w->wd == wd || wd == -1) 3729 if (w->wd == wd || wd == -1)
2922 { 3730 {
2923 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3731 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2924 { 3732 {
2925 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3733 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2926 w->wd = -1; 3734 w->wd = -1;
2927 infy_add (EV_A_ w); /* re-add, no matter what */ 3735 infy_add (EV_A_ w); /* re-add, no matter what */
2928 } 3736 }
2929 3737
2930 stat_timer_cb (EV_A_ &w->timer, 0); 3738 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2935 3743
2936static void 3744static void
2937infy_cb (EV_P_ ev_io *w, int revents) 3745infy_cb (EV_P_ ev_io *w, int revents)
2938{ 3746{
2939 char buf [EV_INOTIFY_BUFSIZE]; 3747 char buf [EV_INOTIFY_BUFSIZE];
2940 struct inotify_event *ev = (struct inotify_event *)buf;
2941 int ofs; 3748 int ofs;
2942 int len = read (fs_fd, buf, sizeof (buf)); 3749 int len = read (fs_fd, buf, sizeof (buf));
2943 3750
2944 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3751 for (ofs = 0; ofs < len; )
3752 {
3753 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2945 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3754 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3755 ofs += sizeof (struct inotify_event) + ev->len;
3756 }
2946} 3757}
2947 3758
2948inline_size void 3759inline_size void ecb_cold
2949check_2625 (EV_P) 3760ev_check_2625 (EV_P)
2950{ 3761{
2951 /* kernels < 2.6.25 are borked 3762 /* kernels < 2.6.25 are borked
2952 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3763 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2953 */ 3764 */
2954 struct utsname buf; 3765 if (ev_linux_version () < 0x020619)
2955 int major, minor, micro;
2956
2957 if (uname (&buf))
2958 return; 3766 return;
2959 3767
2960 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2961 return;
2962
2963 if (major < 2
2964 || (major == 2 && minor < 6)
2965 || (major == 2 && minor == 6 && micro < 25))
2966 return;
2967
2968 fs_2625 = 1; 3768 fs_2625 = 1;
3769}
3770
3771inline_size int
3772infy_newfd (void)
3773{
3774#if defined IN_CLOEXEC && defined IN_NONBLOCK
3775 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3776 if (fd >= 0)
3777 return fd;
3778#endif
3779 return inotify_init ();
2969} 3780}
2970 3781
2971inline_size void 3782inline_size void
2972infy_init (EV_P) 3783infy_init (EV_P)
2973{ 3784{
2974 if (fs_fd != -2) 3785 if (fs_fd != -2)
2975 return; 3786 return;
2976 3787
2977 fs_fd = -1; 3788 fs_fd = -1;
2978 3789
2979 check_2625 (EV_A); 3790 ev_check_2625 (EV_A);
2980 3791
2981 fs_fd = inotify_init (); 3792 fs_fd = infy_newfd ();
2982 3793
2983 if (fs_fd >= 0) 3794 if (fs_fd >= 0)
2984 { 3795 {
3796 fd_intern (fs_fd);
2985 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3797 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2986 ev_set_priority (&fs_w, EV_MAXPRI); 3798 ev_set_priority (&fs_w, EV_MAXPRI);
2987 ev_io_start (EV_A_ &fs_w); 3799 ev_io_start (EV_A_ &fs_w);
3800 ev_unref (EV_A);
2988 } 3801 }
2989} 3802}
2990 3803
2991inline_size void 3804inline_size void
2992infy_fork (EV_P) 3805infy_fork (EV_P)
… …
2994 int slot; 3807 int slot;
2995 3808
2996 if (fs_fd < 0) 3809 if (fs_fd < 0)
2997 return; 3810 return;
2998 3811
3812 ev_ref (EV_A);
3813 ev_io_stop (EV_A_ &fs_w);
2999 close (fs_fd); 3814 close (fs_fd);
3000 fs_fd = inotify_init (); 3815 fs_fd = infy_newfd ();
3001 3816
3817 if (fs_fd >= 0)
3818 {
3819 fd_intern (fs_fd);
3820 ev_io_set (&fs_w, fs_fd, EV_READ);
3821 ev_io_start (EV_A_ &fs_w);
3822 ev_unref (EV_A);
3823 }
3824
3002 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3825 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3003 { 3826 {
3004 WL w_ = fs_hash [slot].head; 3827 WL w_ = fs_hash [slot].head;
3005 fs_hash [slot].head = 0; 3828 fs_hash [slot].head = 0;
3006 3829
3007 while (w_) 3830 while (w_)
… …
3012 w->wd = -1; 3835 w->wd = -1;
3013 3836
3014 if (fs_fd >= 0) 3837 if (fs_fd >= 0)
3015 infy_add (EV_A_ w); /* re-add, no matter what */ 3838 infy_add (EV_A_ w); /* re-add, no matter what */
3016 else 3839 else
3840 {
3841 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3842 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3017 ev_timer_again (EV_A_ &w->timer); 3843 ev_timer_again (EV_A_ &w->timer);
3844 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3845 }
3018 } 3846 }
3019 } 3847 }
3020} 3848}
3021 3849
3022#endif 3850#endif
… …
3026#else 3854#else
3027# define EV_LSTAT(p,b) lstat (p, b) 3855# define EV_LSTAT(p,b) lstat (p, b)
3028#endif 3856#endif
3029 3857
3030void 3858void
3031ev_stat_stat (EV_P_ ev_stat *w) 3859ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3032{ 3860{
3033 if (lstat (w->path, &w->attr) < 0) 3861 if (lstat (w->path, &w->attr) < 0)
3034 w->attr.st_nlink = 0; 3862 w->attr.st_nlink = 0;
3035 else if (!w->attr.st_nlink) 3863 else if (!w->attr.st_nlink)
3036 w->attr.st_nlink = 1; 3864 w->attr.st_nlink = 1;
… …
3039static void noinline 3867static void noinline
3040stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3868stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3041{ 3869{
3042 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3870 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3043 3871
3044 /* we copy this here each the time so that */ 3872 ev_statdata prev = w->attr;
3045 /* prev has the old value when the callback gets invoked */
3046 w->prev = w->attr;
3047 ev_stat_stat (EV_A_ w); 3873 ev_stat_stat (EV_A_ w);
3048 3874
3049 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3875 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3050 if ( 3876 if (
3051 w->prev.st_dev != w->attr.st_dev 3877 prev.st_dev != w->attr.st_dev
3052 || w->prev.st_ino != w->attr.st_ino 3878 || prev.st_ino != w->attr.st_ino
3053 || w->prev.st_mode != w->attr.st_mode 3879 || prev.st_mode != w->attr.st_mode
3054 || w->prev.st_nlink != w->attr.st_nlink 3880 || prev.st_nlink != w->attr.st_nlink
3055 || w->prev.st_uid != w->attr.st_uid 3881 || prev.st_uid != w->attr.st_uid
3056 || w->prev.st_gid != w->attr.st_gid 3882 || prev.st_gid != w->attr.st_gid
3057 || w->prev.st_rdev != w->attr.st_rdev 3883 || prev.st_rdev != w->attr.st_rdev
3058 || w->prev.st_size != w->attr.st_size 3884 || prev.st_size != w->attr.st_size
3059 || w->prev.st_atime != w->attr.st_atime 3885 || prev.st_atime != w->attr.st_atime
3060 || w->prev.st_mtime != w->attr.st_mtime 3886 || prev.st_mtime != w->attr.st_mtime
3061 || w->prev.st_ctime != w->attr.st_ctime 3887 || prev.st_ctime != w->attr.st_ctime
3062 ) { 3888 ) {
3889 /* we only update w->prev on actual differences */
3890 /* in case we test more often than invoke the callback, */
3891 /* to ensure that prev is always different to attr */
3892 w->prev = prev;
3893
3063 #if EV_USE_INOTIFY 3894 #if EV_USE_INOTIFY
3064 if (fs_fd >= 0) 3895 if (fs_fd >= 0)
3065 { 3896 {
3066 infy_del (EV_A_ w); 3897 infy_del (EV_A_ w);
3067 infy_add (EV_A_ w); 3898 infy_add (EV_A_ w);
… …
3072 ev_feed_event (EV_A_ w, EV_STAT); 3903 ev_feed_event (EV_A_ w, EV_STAT);
3073 } 3904 }
3074} 3905}
3075 3906
3076void 3907void
3077ev_stat_start (EV_P_ ev_stat *w) 3908ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3078{ 3909{
3079 if (expect_false (ev_is_active (w))) 3910 if (expect_false (ev_is_active (w)))
3080 return; 3911 return;
3081 3912
3082 ev_stat_stat (EV_A_ w); 3913 ev_stat_stat (EV_A_ w);
… …
3092 3923
3093 if (fs_fd >= 0) 3924 if (fs_fd >= 0)
3094 infy_add (EV_A_ w); 3925 infy_add (EV_A_ w);
3095 else 3926 else
3096#endif 3927#endif
3928 {
3097 ev_timer_again (EV_A_ &w->timer); 3929 ev_timer_again (EV_A_ &w->timer);
3930 ev_unref (EV_A);
3931 }
3098 3932
3099 ev_start (EV_A_ (W)w, 1); 3933 ev_start (EV_A_ (W)w, 1);
3100 3934
3101 EV_FREQUENT_CHECK; 3935 EV_FREQUENT_CHECK;
3102} 3936}
3103 3937
3104void 3938void
3105ev_stat_stop (EV_P_ ev_stat *w) 3939ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3106{ 3940{
3107 clear_pending (EV_A_ (W)w); 3941 clear_pending (EV_A_ (W)w);
3108 if (expect_false (!ev_is_active (w))) 3942 if (expect_false (!ev_is_active (w)))
3109 return; 3943 return;
3110 3944
3111 EV_FREQUENT_CHECK; 3945 EV_FREQUENT_CHECK;
3112 3946
3113#if EV_USE_INOTIFY 3947#if EV_USE_INOTIFY
3114 infy_del (EV_A_ w); 3948 infy_del (EV_A_ w);
3115#endif 3949#endif
3950
3951 if (ev_is_active (&w->timer))
3952 {
3953 ev_ref (EV_A);
3116 ev_timer_stop (EV_A_ &w->timer); 3954 ev_timer_stop (EV_A_ &w->timer);
3955 }
3117 3956
3118 ev_stop (EV_A_ (W)w); 3957 ev_stop (EV_A_ (W)w);
3119 3958
3120 EV_FREQUENT_CHECK; 3959 EV_FREQUENT_CHECK;
3121} 3960}
3122#endif 3961#endif
3123 3962
3124#if EV_IDLE_ENABLE 3963#if EV_IDLE_ENABLE
3125void 3964void
3126ev_idle_start (EV_P_ ev_idle *w) 3965ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3127{ 3966{
3128 if (expect_false (ev_is_active (w))) 3967 if (expect_false (ev_is_active (w)))
3129 return; 3968 return;
3130 3969
3131 pri_adjust (EV_A_ (W)w); 3970 pri_adjust (EV_A_ (W)w);
… …
3144 3983
3145 EV_FREQUENT_CHECK; 3984 EV_FREQUENT_CHECK;
3146} 3985}
3147 3986
3148void 3987void
3149ev_idle_stop (EV_P_ ev_idle *w) 3988ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3150{ 3989{
3151 clear_pending (EV_A_ (W)w); 3990 clear_pending (EV_A_ (W)w);
3152 if (expect_false (!ev_is_active (w))) 3991 if (expect_false (!ev_is_active (w)))
3153 return; 3992 return;
3154 3993
… …
3166 4005
3167 EV_FREQUENT_CHECK; 4006 EV_FREQUENT_CHECK;
3168} 4007}
3169#endif 4008#endif
3170 4009
4010#if EV_PREPARE_ENABLE
3171void 4011void
3172ev_prepare_start (EV_P_ ev_prepare *w) 4012ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3173{ 4013{
3174 if (expect_false (ev_is_active (w))) 4014 if (expect_false (ev_is_active (w)))
3175 return; 4015 return;
3176 4016
3177 EV_FREQUENT_CHECK; 4017 EV_FREQUENT_CHECK;
… …
3182 4022
3183 EV_FREQUENT_CHECK; 4023 EV_FREQUENT_CHECK;
3184} 4024}
3185 4025
3186void 4026void
3187ev_prepare_stop (EV_P_ ev_prepare *w) 4027ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3188{ 4028{
3189 clear_pending (EV_A_ (W)w); 4029 clear_pending (EV_A_ (W)w);
3190 if (expect_false (!ev_is_active (w))) 4030 if (expect_false (!ev_is_active (w)))
3191 return; 4031 return;
3192 4032
… …
3201 4041
3202 ev_stop (EV_A_ (W)w); 4042 ev_stop (EV_A_ (W)w);
3203 4043
3204 EV_FREQUENT_CHECK; 4044 EV_FREQUENT_CHECK;
3205} 4045}
4046#endif
3206 4047
4048#if EV_CHECK_ENABLE
3207void 4049void
3208ev_check_start (EV_P_ ev_check *w) 4050ev_check_start (EV_P_ ev_check *w) EV_THROW
3209{ 4051{
3210 if (expect_false (ev_is_active (w))) 4052 if (expect_false (ev_is_active (w)))
3211 return; 4053 return;
3212 4054
3213 EV_FREQUENT_CHECK; 4055 EV_FREQUENT_CHECK;
… …
3218 4060
3219 EV_FREQUENT_CHECK; 4061 EV_FREQUENT_CHECK;
3220} 4062}
3221 4063
3222void 4064void
3223ev_check_stop (EV_P_ ev_check *w) 4065ev_check_stop (EV_P_ ev_check *w) EV_THROW
3224{ 4066{
3225 clear_pending (EV_A_ (W)w); 4067 clear_pending (EV_A_ (W)w);
3226 if (expect_false (!ev_is_active (w))) 4068 if (expect_false (!ev_is_active (w)))
3227 return; 4069 return;
3228 4070
… …
3237 4079
3238 ev_stop (EV_A_ (W)w); 4080 ev_stop (EV_A_ (W)w);
3239 4081
3240 EV_FREQUENT_CHECK; 4082 EV_FREQUENT_CHECK;
3241} 4083}
4084#endif
3242 4085
3243#if EV_EMBED_ENABLE 4086#if EV_EMBED_ENABLE
3244void noinline 4087void noinline
3245ev_embed_sweep (EV_P_ ev_embed *w) 4088ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3246{ 4089{
3247 ev_loop (w->other, EVLOOP_NONBLOCK); 4090 ev_run (w->other, EVRUN_NOWAIT);
3248} 4091}
3249 4092
3250static void 4093static void
3251embed_io_cb (EV_P_ ev_io *io, int revents) 4094embed_io_cb (EV_P_ ev_io *io, int revents)
3252{ 4095{
3253 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4096 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3254 4097
3255 if (ev_cb (w)) 4098 if (ev_cb (w))
3256 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4099 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3257 else 4100 else
3258 ev_loop (w->other, EVLOOP_NONBLOCK); 4101 ev_run (w->other, EVRUN_NOWAIT);
3259} 4102}
3260 4103
3261static void 4104static void
3262embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4105embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3263{ 4106{
… …
3267 EV_P = w->other; 4110 EV_P = w->other;
3268 4111
3269 while (fdchangecnt) 4112 while (fdchangecnt)
3270 { 4113 {
3271 fd_reify (EV_A); 4114 fd_reify (EV_A);
3272 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4115 ev_run (EV_A_ EVRUN_NOWAIT);
3273 } 4116 }
3274 } 4117 }
3275} 4118}
3276 4119
3277static void 4120static void
… …
3283 4126
3284 { 4127 {
3285 EV_P = w->other; 4128 EV_P = w->other;
3286 4129
3287 ev_loop_fork (EV_A); 4130 ev_loop_fork (EV_A);
3288 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4131 ev_run (EV_A_ EVRUN_NOWAIT);
3289 } 4132 }
3290 4133
3291 ev_embed_start (EV_A_ w); 4134 ev_embed_start (EV_A_ w);
3292} 4135}
3293 4136
… …
3298 ev_idle_stop (EV_A_ idle); 4141 ev_idle_stop (EV_A_ idle);
3299} 4142}
3300#endif 4143#endif
3301 4144
3302void 4145void
3303ev_embed_start (EV_P_ ev_embed *w) 4146ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3304{ 4147{
3305 if (expect_false (ev_is_active (w))) 4148 if (expect_false (ev_is_active (w)))
3306 return; 4149 return;
3307 4150
3308 { 4151 {
… …
3329 4172
3330 EV_FREQUENT_CHECK; 4173 EV_FREQUENT_CHECK;
3331} 4174}
3332 4175
3333void 4176void
3334ev_embed_stop (EV_P_ ev_embed *w) 4177ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3335{ 4178{
3336 clear_pending (EV_A_ (W)w); 4179 clear_pending (EV_A_ (W)w);
3337 if (expect_false (!ev_is_active (w))) 4180 if (expect_false (!ev_is_active (w)))
3338 return; 4181 return;
3339 4182
… …
3341 4184
3342 ev_io_stop (EV_A_ &w->io); 4185 ev_io_stop (EV_A_ &w->io);
3343 ev_prepare_stop (EV_A_ &w->prepare); 4186 ev_prepare_stop (EV_A_ &w->prepare);
3344 ev_fork_stop (EV_A_ &w->fork); 4187 ev_fork_stop (EV_A_ &w->fork);
3345 4188
4189 ev_stop (EV_A_ (W)w);
4190
3346 EV_FREQUENT_CHECK; 4191 EV_FREQUENT_CHECK;
3347} 4192}
3348#endif 4193#endif
3349 4194
3350#if EV_FORK_ENABLE 4195#if EV_FORK_ENABLE
3351void 4196void
3352ev_fork_start (EV_P_ ev_fork *w) 4197ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3353{ 4198{
3354 if (expect_false (ev_is_active (w))) 4199 if (expect_false (ev_is_active (w)))
3355 return; 4200 return;
3356 4201
3357 EV_FREQUENT_CHECK; 4202 EV_FREQUENT_CHECK;
… …
3362 4207
3363 EV_FREQUENT_CHECK; 4208 EV_FREQUENT_CHECK;
3364} 4209}
3365 4210
3366void 4211void
3367ev_fork_stop (EV_P_ ev_fork *w) 4212ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3368{ 4213{
3369 clear_pending (EV_A_ (W)w); 4214 clear_pending (EV_A_ (W)w);
3370 if (expect_false (!ev_is_active (w))) 4215 if (expect_false (!ev_is_active (w)))
3371 return; 4216 return;
3372 4217
… …
3383 4228
3384 EV_FREQUENT_CHECK; 4229 EV_FREQUENT_CHECK;
3385} 4230}
3386#endif 4231#endif
3387 4232
4233#if EV_CLEANUP_ENABLE
4234void
4235ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4236{
4237 if (expect_false (ev_is_active (w)))
4238 return;
4239
4240 EV_FREQUENT_CHECK;
4241
4242 ev_start (EV_A_ (W)w, ++cleanupcnt);
4243 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4244 cleanups [cleanupcnt - 1] = w;
4245
4246 /* cleanup watchers should never keep a refcount on the loop */
4247 ev_unref (EV_A);
4248 EV_FREQUENT_CHECK;
4249}
4250
4251void
4252ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4253{
4254 clear_pending (EV_A_ (W)w);
4255 if (expect_false (!ev_is_active (w)))
4256 return;
4257
4258 EV_FREQUENT_CHECK;
4259 ev_ref (EV_A);
4260
4261 {
4262 int active = ev_active (w);
4263
4264 cleanups [active - 1] = cleanups [--cleanupcnt];
4265 ev_active (cleanups [active - 1]) = active;
4266 }
4267
4268 ev_stop (EV_A_ (W)w);
4269
4270 EV_FREQUENT_CHECK;
4271}
4272#endif
4273
3388#if EV_ASYNC_ENABLE 4274#if EV_ASYNC_ENABLE
3389void 4275void
3390ev_async_start (EV_P_ ev_async *w) 4276ev_async_start (EV_P_ ev_async *w) EV_THROW
3391{ 4277{
3392 if (expect_false (ev_is_active (w))) 4278 if (expect_false (ev_is_active (w)))
3393 return; 4279 return;
4280
4281 w->sent = 0;
3394 4282
3395 evpipe_init (EV_A); 4283 evpipe_init (EV_A);
3396 4284
3397 EV_FREQUENT_CHECK; 4285 EV_FREQUENT_CHECK;
3398 4286
… …
3402 4290
3403 EV_FREQUENT_CHECK; 4291 EV_FREQUENT_CHECK;
3404} 4292}
3405 4293
3406void 4294void
3407ev_async_stop (EV_P_ ev_async *w) 4295ev_async_stop (EV_P_ ev_async *w) EV_THROW
3408{ 4296{
3409 clear_pending (EV_A_ (W)w); 4297 clear_pending (EV_A_ (W)w);
3410 if (expect_false (!ev_is_active (w))) 4298 if (expect_false (!ev_is_active (w)))
3411 return; 4299 return;
3412 4300
… …
3423 4311
3424 EV_FREQUENT_CHECK; 4312 EV_FREQUENT_CHECK;
3425} 4313}
3426 4314
3427void 4315void
3428ev_async_send (EV_P_ ev_async *w) 4316ev_async_send (EV_P_ ev_async *w) EV_THROW
3429{ 4317{
3430 w->sent = 1; 4318 w->sent = 1;
3431 evpipe_write (EV_A_ &async_pending); 4319 evpipe_write (EV_A_ &async_pending);
3432} 4320}
3433#endif 4321#endif
… …
3470 4358
3471 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4359 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3472} 4360}
3473 4361
3474void 4362void
3475ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4363ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3476{ 4364{
3477 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4365 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3478 4366
3479 if (expect_false (!once)) 4367 if (expect_false (!once))
3480 { 4368 {
3481 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4369 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3482 return; 4370 return;
3483 } 4371 }
3484 4372
3485 once->cb = cb; 4373 once->cb = cb;
3486 once->arg = arg; 4374 once->arg = arg;
… …
3501} 4389}
3502 4390
3503/*****************************************************************************/ 4391/*****************************************************************************/
3504 4392
3505#if EV_WALK_ENABLE 4393#if EV_WALK_ENABLE
3506void 4394void ecb_cold
3507ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4395ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3508{ 4396{
3509 int i, j; 4397 int i, j;
3510 ev_watcher_list *wl, *wn; 4398 ev_watcher_list *wl, *wn;
3511 4399
3512 if (types & (EV_IO | EV_EMBED)) 4400 if (types & (EV_IO | EV_EMBED))
… …
3555 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4443 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3556#endif 4444#endif
3557 4445
3558#if EV_IDLE_ENABLE 4446#if EV_IDLE_ENABLE
3559 if (types & EV_IDLE) 4447 if (types & EV_IDLE)
3560 for (j = NUMPRI; i--; ) 4448 for (j = NUMPRI; j--; )
3561 for (i = idlecnt [j]; i--; ) 4449 for (i = idlecnt [j]; i--; )
3562 cb (EV_A_ EV_IDLE, idles [j][i]); 4450 cb (EV_A_ EV_IDLE, idles [j][i]);
3563#endif 4451#endif
3564 4452
3565#if EV_FORK_ENABLE 4453#if EV_FORK_ENABLE
… …
3573 if (types & EV_ASYNC) 4461 if (types & EV_ASYNC)
3574 for (i = asynccnt; i--; ) 4462 for (i = asynccnt; i--; )
3575 cb (EV_A_ EV_ASYNC, asyncs [i]); 4463 cb (EV_A_ EV_ASYNC, asyncs [i]);
3576#endif 4464#endif
3577 4465
4466#if EV_PREPARE_ENABLE
3578 if (types & EV_PREPARE) 4467 if (types & EV_PREPARE)
3579 for (i = preparecnt; i--; ) 4468 for (i = preparecnt; i--; )
3580#if EV_EMBED_ENABLE 4469# if EV_EMBED_ENABLE
3581 if (ev_cb (prepares [i]) != embed_prepare_cb) 4470 if (ev_cb (prepares [i]) != embed_prepare_cb)
3582#endif 4471# endif
3583 cb (EV_A_ EV_PREPARE, prepares [i]); 4472 cb (EV_A_ EV_PREPARE, prepares [i]);
4473#endif
3584 4474
4475#if EV_CHECK_ENABLE
3585 if (types & EV_CHECK) 4476 if (types & EV_CHECK)
3586 for (i = checkcnt; i--; ) 4477 for (i = checkcnt; i--; )
3587 cb (EV_A_ EV_CHECK, checks [i]); 4478 cb (EV_A_ EV_CHECK, checks [i]);
4479#endif
3588 4480
4481#if EV_SIGNAL_ENABLE
3589 if (types & EV_SIGNAL) 4482 if (types & EV_SIGNAL)
3590 for (i = 0; i < EV_NSIG - 1; ++i) 4483 for (i = 0; i < EV_NSIG - 1; ++i)
3591 for (wl = signals [i].head; wl; ) 4484 for (wl = signals [i].head; wl; )
3592 { 4485 {
3593 wn = wl->next; 4486 wn = wl->next;
3594 cb (EV_A_ EV_SIGNAL, wl); 4487 cb (EV_A_ EV_SIGNAL, wl);
3595 wl = wn; 4488 wl = wn;
3596 } 4489 }
4490#endif
3597 4491
4492#if EV_CHILD_ENABLE
3598 if (types & EV_CHILD) 4493 if (types & EV_CHILD)
3599 for (i = EV_PID_HASHSIZE; i--; ) 4494 for (i = (EV_PID_HASHSIZE); i--; )
3600 for (wl = childs [i]; wl; ) 4495 for (wl = childs [i]; wl; )
3601 { 4496 {
3602 wn = wl->next; 4497 wn = wl->next;
3603 cb (EV_A_ EV_CHILD, wl); 4498 cb (EV_A_ EV_CHILD, wl);
3604 wl = wn; 4499 wl = wn;
3605 } 4500 }
4501#endif
3606/* EV_STAT 0x00001000 /* stat data changed */ 4502/* EV_STAT 0x00001000 /* stat data changed */
3607/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4503/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3608} 4504}
3609#endif 4505#endif
3610 4506
3611#if EV_MULTIPLICITY 4507#if EV_MULTIPLICITY
3612 #include "ev_wrap.h" 4508 #include "ev_wrap.h"
3613#endif 4509#endif
3614 4510
3615#ifdef __cplusplus
3616}
3617#endif
3618

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines