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

Comparing libev/ev.c (file contents):
Revision 1.307 by root, Sun Jul 19 07:20:41 2009 UTC vs.
Revision 1.379 by root, Sun Jun 19 17:55:13 2011 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 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
… …
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"
174#endif 186#endif
187
188EV_CPP(extern "C" {)
175 189
176#ifndef _WIN32 190#ifndef _WIN32
177# include <sys/time.h> 191# include <sys/time.h>
178# include <sys/wait.h> 192# include <sys/wait.h>
179# include <unistd.h> 193# include <unistd.h>
… …
182# define WIN32_LEAN_AND_MEAN 196# define WIN32_LEAN_AND_MEAN
183# include <windows.h> 197# include <windows.h>
184# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
186# endif 200# endif
201# undef EV_AVOID_STDIO
187#endif 202#endif
203
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
188 211
189/* this block tries to deduce configuration from header-defined symbols and defaults */ 212/* this block tries to deduce configuration from header-defined symbols and defaults */
190 213
191/* try to deduce the maximum number of signals on this platform */ 214/* try to deduce the maximum number of signals on this platform */
192#if defined (EV_NSIG) 215#if defined (EV_NSIG)
… …
204#elif defined (MAXSIG) 227#elif defined (MAXSIG)
205# define EV_NSIG (MAXSIG+1) 228# define EV_NSIG (MAXSIG+1)
206#elif defined (MAX_SIG) 229#elif defined (MAX_SIG)
207# define EV_NSIG (MAX_SIG+1) 230# define EV_NSIG (MAX_SIG+1)
208#elif defined (SIGARRAYSIZE) 231#elif defined (SIGARRAYSIZE)
209# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
210#elif defined (_sys_nsig) 233#elif defined (_sys_nsig)
211# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212#else 235#else
213# error "unable to find value for NSIG, please report" 236# error "unable to find value for NSIG, please report"
214/* to make it compile regardless, just remove the above line */ 237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
215# define EV_NSIG 65 239# define EV_NSIG 65
240#endif
241
242#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0
216#endif 244#endif
217 245
218#ifndef EV_USE_CLOCK_SYSCALL 246#ifndef EV_USE_CLOCK_SYSCALL
219# if __linux && __GLIBC__ >= 2 247# if __linux && __GLIBC__ >= 2
220# define EV_USE_CLOCK_SYSCALL 1 248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
221# else 249# else
222# define EV_USE_CLOCK_SYSCALL 0 250# define EV_USE_CLOCK_SYSCALL 0
223# endif 251# endif
224#endif 252#endif
225 253
226#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
227# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
228# define EV_USE_MONOTONIC 1 256# define EV_USE_MONOTONIC EV_FEATURE_OS
229# else 257# else
230# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
231# endif 259# endif
232#endif 260#endif
233 261
… …
235# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
236#endif 264#endif
237 265
238#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
239# if _POSIX_C_SOURCE >= 199309L 267# if _POSIX_C_SOURCE >= 199309L
240# define EV_USE_NANOSLEEP 1 268# define EV_USE_NANOSLEEP EV_FEATURE_OS
241# else 269# else
242# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
243# endif 271# endif
244#endif 272#endif
245 273
246#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
247# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
248#endif 276#endif
249 277
250#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
251# ifdef _WIN32 279# ifdef _WIN32
252# define EV_USE_POLL 0 280# define EV_USE_POLL 0
253# else 281# else
254# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
255# endif 283# endif
256#endif 284#endif
257 285
258#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
259# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
260# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
261# else 289# else
262# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
263# endif 291# endif
264#endif 292#endif
265 293
… …
271# define EV_USE_PORT 0 299# define EV_USE_PORT 0
272#endif 300#endif
273 301
274#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
275# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
276# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
277# else 305# else
278# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
279# endif 307# endif
280#endif 308#endif
281 309
282#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
283# if EV_MINIMAL 311# 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 312#endif
289 313
290#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
291# if EV_MINIMAL 315# 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 316#endif
297 317
298#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
299# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
300# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
301# else 321# else
302# define EV_USE_EVENTFD 0 322# define EV_USE_EVENTFD 0
303# endif 323# endif
304#endif 324#endif
305 325
306#ifndef EV_USE_SIGNALFD 326#ifndef EV_USE_SIGNALFD
307# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 327# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
308# define EV_USE_SIGNALFD 1 328# define EV_USE_SIGNALFD EV_FEATURE_OS
309# else 329# else
310# define EV_USE_SIGNALFD 0 330# define EV_USE_SIGNALFD 0
311# endif 331# endif
312#endif 332#endif
313 333
… …
316# define EV_USE_4HEAP 1 336# define EV_USE_4HEAP 1
317# define EV_HEAP_CACHE_AT 1 337# define EV_HEAP_CACHE_AT 1
318#endif 338#endif
319 339
320#ifndef EV_VERIFY 340#ifndef EV_VERIFY
321# define EV_VERIFY !EV_MINIMAL 341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
322#endif 342#endif
323 343
324#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
325# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
326#endif 346#endif
327 347
328#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
329# define EV_HEAP_CACHE_AT !EV_MINIMAL 349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
330#endif 350#endif
331 351
332/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 352/* 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. */ 353/* which makes programs even slower. might work on other unices, too. */
334#if EV_USE_CLOCK_SYSCALL 354#if EV_USE_CLOCK_SYSCALL
… …
343# endif 363# endif
344#endif 364#endif
345 365
346/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 366/* this block fixes any misconfiguration where we know we run into trouble otherwise */
347 367
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
373
348#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
349# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
351#endif 377#endif
352 378
… …
359# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
360# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
361#endif 387#endif
362 388
363#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
364# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
365# include <sys/select.h> 392# include <sys/select.h>
366# endif 393# endif
367#endif 394#endif
368 395
369#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
370# include <sys/utsname.h>
371# include <sys/statfs.h> 397# include <sys/statfs.h>
372# include <sys/inotify.h> 398# include <sys/inotify.h>
373/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
374# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
375# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
… …
386# include <stdint.h> 412# include <stdint.h>
387# ifndef EFD_NONBLOCK 413# ifndef EFD_NONBLOCK
388# define EFD_NONBLOCK O_NONBLOCK 414# define EFD_NONBLOCK O_NONBLOCK
389# endif 415# endif
390# ifndef EFD_CLOEXEC 416# ifndef EFD_CLOEXEC
417# ifdef O_CLOEXEC
391# define EFD_CLOEXEC O_CLOEXEC 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
392# endif 422# endif
393# ifdef __cplusplus 423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
394extern "C" { 424#endif
425
426#if EV_USE_SIGNALFD
427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
428# include <stdint.h>
429# ifndef SFD_NONBLOCK
430# define SFD_NONBLOCK O_NONBLOCK
395# endif 431# endif
396int eventfd (unsigned int initval, int flags); 432# ifndef SFD_CLOEXEC
397# ifdef __cplusplus 433# ifdef O_CLOEXEC
398} 434# define SFD_CLOEXEC O_CLOEXEC
435# else
436# define SFD_CLOEXEC 02000000
437# endif
399# endif 438# endif
400#endif 439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
401 440
402#if EV_USE_SIGNALFD 441struct signalfd_siginfo
403# include <sys/signalfd.h> 442{
443 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)];
445};
404#endif 446#endif
405 447
406/**/ 448/**/
407 449
408#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
409# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
410#else 452#else
411# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
412#endif 454#endif
413 455
414/* 456/*
415 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
416 * It is added to ev_rt_now when scheduling periodics
417 * to ensure progress, time-wise, even when rounding
418 * errors are against us.
419 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
420 * Better solutions welcome.
421 */ 459 */
422#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
423 462
424#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
425#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
426/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
427 465
428#if __GNUC__ >= 4 466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
429# define expect(expr,value) __builtin_expect ((expr),(value)) 467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
430# define noinline __attribute__ ((noinline)) 468
469/* the following are taken from libecb */
470/* ecb.h start */
471
472/* many compilers define _GNUC_ to some versions but then only implement
473 * what their idiot authors think are the "more important" extensions,
474 * causing enourmous grief in return for some better fake benchmark numbers.
475 * or so.
476 * we try to detect these and simply assume they are not gcc - if they have
477 * an issue with that they should have done it right in the first place.
478 */
479#ifndef ECB_GCC_VERSION
480 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
481 #define ECB_GCC_VERSION(major,minor) 0
482 #else
483 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
484 #endif
485#endif
486
487#if __cplusplus
488 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__
491#elif ECB_C99
492 #define ecb_inline static inline
431#else 493#else
432# define expect(expr,value) (expr) 494 #define ecb_inline static
433# define noinline
434# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
435# define inline
436# endif 495#endif
437#endif
438 496
497#if ECB_GCC_VERSION(3,1)
498 #define ecb_attribute(attrlist) __attribute__(attrlist)
499 #define ecb_is_constant(expr) __builtin_constant_p (expr)
500 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
501 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
502#else
503 #define ecb_attribute(attrlist)
504 #define ecb_is_constant(expr) 0
505 #define ecb_expect(expr,value) (expr)
506 #define ecb_prefetch(addr,rw,locality)
507#endif
508
509#define ecb_noinline ecb_attribute ((__noinline__))
510#define ecb_noreturn ecb_attribute ((__noreturn__))
511#define ecb_unused ecb_attribute ((__unused__))
512#define ecb_const ecb_attribute ((__const__))
513#define ecb_pure ecb_attribute ((__pure__))
514
515#if ECB_GCC_VERSION(4,3)
516 #define ecb_artificial ecb_attribute ((__artificial__))
517 #define ecb_hot ecb_attribute ((__hot__))
518 #define ecb_cold ecb_attribute ((__cold__))
519#else
520 #define ecb_artificial
521 #define ecb_hot
522 #define ecb_cold
523#endif
524
525/* put around conditional expressions if you are very sure that the */
526/* expression is mostly true or mostly false. note that these return */
527/* booleans, not the expression. */
439#define expect_false(expr) expect ((expr) != 0, 0) 528#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
440#define expect_true(expr) expect ((expr) != 0, 1) 529#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
530/* ecb.h end */
531
532#define expect_false(cond) ecb_expect_false (cond)
533#define expect_true(cond) ecb_expect_true (cond)
534#define noinline ecb_noinline
535
441#define inline_size static inline 536#define inline_size ecb_inline
442 537
443#if EV_MINIMAL 538#if EV_FEATURE_CODE
539# define inline_speed ecb_inline
540#else
444# define inline_speed static noinline 541# define inline_speed static noinline
445#else
446# define inline_speed static inline
447#endif 542#endif
448 543
449#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 544#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
450 545
451#if EV_MINPRI == EV_MAXPRI 546#if EV_MINPRI == EV_MAXPRI
… …
464#define ev_active(w) ((W)(w))->active 559#define ev_active(w) ((W)(w))->active
465#define ev_at(w) ((WT)(w))->at 560#define ev_at(w) ((WT)(w))->at
466 561
467#if EV_USE_REALTIME 562#if EV_USE_REALTIME
468/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 563/* sig_atomic_t is used to avoid per-thread variables or locking but still */
469/* giving it a reasonably high chance of working on typical architetcures */ 564/* giving it a reasonably high chance of working on typical architectures */
470static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 565static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
471#endif 566#endif
472 567
473#if EV_USE_MONOTONIC 568#if EV_USE_MONOTONIC
474static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 569static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
475#endif 570#endif
476 571
572#ifndef EV_FD_TO_WIN32_HANDLE
573# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
574#endif
575#ifndef EV_WIN32_HANDLE_TO_FD
576# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
577#endif
578#ifndef EV_WIN32_CLOSE_FD
579# define EV_WIN32_CLOSE_FD(fd) close (fd)
580#endif
581
477#ifdef _WIN32 582#ifdef _WIN32
478# include "ev_win32.c" 583# include "ev_win32.c"
479#endif 584#endif
480 585
481/*****************************************************************************/ 586/*****************************************************************************/
482 587
588/* define a suitable floor function (only used by periodics atm) */
589
590#if EV_USE_FLOOR
591# include <math.h>
592# define ev_floor(v) floor (v)
593#else
594
595#include <float.h>
596
597/* a floor() replacement function, should be independent of ev_tstamp type */
598static ev_tstamp noinline
599ev_floor (ev_tstamp v)
600{
601 /* the choice of shift factor is not terribly important */
602#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
603 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
604#else
605 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
606#endif
607
608 /* argument too large for an unsigned long? */
609 if (expect_false (v >= shift))
610 {
611 ev_tstamp f;
612
613 if (v == v - 1.)
614 return v; /* very large number */
615
616 f = shift * ev_floor (v * (1. / shift));
617 return f + ev_floor (v - f);
618 }
619
620 /* special treatment for negative args? */
621 if (expect_false (v < 0.))
622 {
623 ev_tstamp f = -ev_floor (-v);
624
625 return f - (f == v ? 0 : 1);
626 }
627
628 /* fits into an unsigned long */
629 return (unsigned long)v;
630}
631
632#endif
633
634/*****************************************************************************/
635
636#ifdef __linux
637# include <sys/utsname.h>
638#endif
639
640static unsigned int noinline ecb_cold
641ev_linux_version (void)
642{
643#ifdef __linux
644 unsigned int v = 0;
645 struct utsname buf;
646 int i;
647 char *p = buf.release;
648
649 if (uname (&buf))
650 return 0;
651
652 for (i = 3+1; --i; )
653 {
654 unsigned int c = 0;
655
656 for (;;)
657 {
658 if (*p >= '0' && *p <= '9')
659 c = c * 10 + *p++ - '0';
660 else
661 {
662 p += *p == '.';
663 break;
664 }
665 }
666
667 v = (v << 8) | c;
668 }
669
670 return v;
671#else
672 return 0;
673#endif
674}
675
676/*****************************************************************************/
677
678#if EV_AVOID_STDIO
679static void noinline ecb_cold
680ev_printerr (const char *msg)
681{
682 write (STDERR_FILENO, msg, strlen (msg));
683}
684#endif
685
483static void (*syserr_cb)(const char *msg); 686static void (*syserr_cb)(const char *msg);
484 687
485void 688void ecb_cold
486ev_set_syserr_cb (void (*cb)(const char *msg)) 689ev_set_syserr_cb (void (*cb)(const char *msg))
487{ 690{
488 syserr_cb = cb; 691 syserr_cb = cb;
489} 692}
490 693
491static void noinline 694static void noinline ecb_cold
492ev_syserr (const char *msg) 695ev_syserr (const char *msg)
493{ 696{
494 if (!msg) 697 if (!msg)
495 msg = "(libev) system error"; 698 msg = "(libev) system error";
496 699
497 if (syserr_cb) 700 if (syserr_cb)
498 syserr_cb (msg); 701 syserr_cb (msg);
499 else 702 else
500 { 703 {
704#if EV_AVOID_STDIO
705 ev_printerr (msg);
706 ev_printerr (": ");
707 ev_printerr (strerror (errno));
708 ev_printerr ("\n");
709#else
501 perror (msg); 710 perror (msg);
711#endif
502 abort (); 712 abort ();
503 } 713 }
504} 714}
505 715
506static void * 716static void *
507ev_realloc_emul (void *ptr, long size) 717ev_realloc_emul (void *ptr, long size)
508{ 718{
719#if __GLIBC__
720 return realloc (ptr, size);
721#else
509 /* some systems, notably openbsd and darwin, fail to properly 722 /* some systems, notably openbsd and darwin, fail to properly
510 * implement realloc (x, 0) (as required by both ansi c-98 and 723 * implement realloc (x, 0) (as required by both ansi c-89 and
511 * the single unix specification, so work around them here. 724 * the single unix specification, so work around them here.
512 */ 725 */
513 726
514 if (size) 727 if (size)
515 return realloc (ptr, size); 728 return realloc (ptr, size);
516 729
517 free (ptr); 730 free (ptr);
518 return 0; 731 return 0;
732#endif
519} 733}
520 734
521static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 735static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
522 736
523void 737void ecb_cold
524ev_set_allocator (void *(*cb)(void *ptr, long size)) 738ev_set_allocator (void *(*cb)(void *ptr, long size))
525{ 739{
526 alloc = cb; 740 alloc = cb;
527} 741}
528 742
… …
531{ 745{
532 ptr = alloc (ptr, size); 746 ptr = alloc (ptr, size);
533 747
534 if (!ptr && size) 748 if (!ptr && size)
535 { 749 {
750#if EV_AVOID_STDIO
751 ev_printerr ("(libev) memory allocation failed, aborting.\n");
752#else
536 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 753 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
754#endif
537 abort (); 755 abort ();
538 } 756 }
539 757
540 return ptr; 758 return ptr;
541} 759}
… …
557 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 775 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
558 unsigned char unused; 776 unsigned char unused;
559#if EV_USE_EPOLL 777#if EV_USE_EPOLL
560 unsigned int egen; /* generation counter to counter epoll bugs */ 778 unsigned int egen; /* generation counter to counter epoll bugs */
561#endif 779#endif
562#if EV_SELECT_IS_WINSOCKET 780#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
563 SOCKET handle; 781 SOCKET handle;
782#endif
783#if EV_USE_IOCP
784 OVERLAPPED or, ow;
564#endif 785#endif
565} ANFD; 786} ANFD;
566 787
567/* stores the pending event set for a given watcher */ 788/* stores the pending event set for a given watcher */
568typedef struct 789typedef struct
… …
623 844
624 static int ev_default_loop_ptr; 845 static int ev_default_loop_ptr;
625 846
626#endif 847#endif
627 848
628#if EV_MINIMAL < 2 849#if EV_FEATURE_API
629# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 850# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
630# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 851# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
631# define EV_INVOKE_PENDING invoke_cb (EV_A) 852# define EV_INVOKE_PENDING invoke_cb (EV_A)
632#else 853#else
633# define EV_RELEASE_CB (void)0 854# define EV_RELEASE_CB (void)0
634# define EV_ACQUIRE_CB (void)0 855# define EV_ACQUIRE_CB (void)0
635# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 856# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
636#endif 857#endif
637 858
638#define EVUNLOOP_RECURSE 0x80 859#define EVBREAK_RECURSE 0x80
639 860
640/*****************************************************************************/ 861/*****************************************************************************/
641 862
642#ifndef EV_HAVE_EV_TIME 863#ifndef EV_HAVE_EV_TIME
643ev_tstamp 864ev_tstamp
… …
687 if (delay > 0.) 908 if (delay > 0.)
688 { 909 {
689#if EV_USE_NANOSLEEP 910#if EV_USE_NANOSLEEP
690 struct timespec ts; 911 struct timespec ts;
691 912
692 ts.tv_sec = (time_t)delay; 913 EV_TS_SET (ts, delay);
693 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
694
695 nanosleep (&ts, 0); 914 nanosleep (&ts, 0);
696#elif defined(_WIN32) 915#elif defined(_WIN32)
697 Sleep ((unsigned long)(delay * 1e3)); 916 Sleep ((unsigned long)(delay * 1e3));
698#else 917#else
699 struct timeval tv; 918 struct timeval tv;
700 919
701 tv.tv_sec = (time_t)delay;
702 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
703
704 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 920 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
705 /* something not guaranteed by newer posix versions, but guaranteed */ 921 /* something not guaranteed by newer posix versions, but guaranteed */
706 /* by older ones */ 922 /* by older ones */
923 EV_TV_SET (tv, delay);
707 select (0, 0, 0, 0, &tv); 924 select (0, 0, 0, 0, &tv);
708#endif 925#endif
709 } 926 }
710} 927}
711 928
712/*****************************************************************************/ 929/*****************************************************************************/
713 930
714#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 931#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
715 932
716/* find a suitable new size for the given array, */ 933/* find a suitable new size for the given array, */
717/* hopefully by rounding to a ncie-to-malloc size */ 934/* hopefully by rounding to a nice-to-malloc size */
718inline_size int 935inline_size int
719array_nextsize (int elem, int cur, int cnt) 936array_nextsize (int elem, int cur, int cnt)
720{ 937{
721 int ncur = cur + 1; 938 int ncur = cur + 1;
722 939
… …
734 } 951 }
735 952
736 return ncur; 953 return ncur;
737} 954}
738 955
739static noinline void * 956static void * noinline ecb_cold
740array_realloc (int elem, void *base, int *cur, int cnt) 957array_realloc (int elem, void *base, int *cur, int cnt)
741{ 958{
742 *cur = array_nextsize (elem, *cur, cnt); 959 *cur = array_nextsize (elem, *cur, cnt);
743 return ev_realloc (base, elem * *cur); 960 return ev_realloc (base, elem * *cur);
744} 961}
… …
818} 1035}
819 1036
820/*****************************************************************************/ 1037/*****************************************************************************/
821 1038
822inline_speed void 1039inline_speed void
823fd_event_nc (EV_P_ int fd, int revents) 1040fd_event_nocheck (EV_P_ int fd, int revents)
824{ 1041{
825 ANFD *anfd = anfds + fd; 1042 ANFD *anfd = anfds + fd;
826 ev_io *w; 1043 ev_io *w;
827 1044
828 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1045 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
840fd_event (EV_P_ int fd, int revents) 1057fd_event (EV_P_ int fd, int revents)
841{ 1058{
842 ANFD *anfd = anfds + fd; 1059 ANFD *anfd = anfds + fd;
843 1060
844 if (expect_true (!anfd->reify)) 1061 if (expect_true (!anfd->reify))
845 fd_event_nc (EV_A_ fd, revents); 1062 fd_event_nocheck (EV_A_ fd, revents);
846} 1063}
847 1064
848void 1065void
849ev_feed_fd_event (EV_P_ int fd, int revents) 1066ev_feed_fd_event (EV_P_ int fd, int revents)
850{ 1067{
851 if (fd >= 0 && fd < anfdmax) 1068 if (fd >= 0 && fd < anfdmax)
852 fd_event_nc (EV_A_ fd, revents); 1069 fd_event_nocheck (EV_A_ fd, revents);
853} 1070}
854 1071
855/* make sure the external fd watch events are in-sync */ 1072/* make sure the external fd watch events are in-sync */
856/* with the kernel/libev internal state */ 1073/* with the kernel/libev internal state */
857inline_size void 1074inline_size void
858fd_reify (EV_P) 1075fd_reify (EV_P)
859{ 1076{
860 int i; 1077 int i;
861 1078
1079#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1080 for (i = 0; i < fdchangecnt; ++i)
1081 {
1082 int fd = fdchanges [i];
1083 ANFD *anfd = anfds + fd;
1084
1085 if (anfd->reify & EV__IOFDSET && anfd->head)
1086 {
1087 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1088
1089 if (handle != anfd->handle)
1090 {
1091 unsigned long arg;
1092
1093 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1094
1095 /* handle changed, but fd didn't - we need to do it in two steps */
1096 backend_modify (EV_A_ fd, anfd->events, 0);
1097 anfd->events = 0;
1098 anfd->handle = handle;
1099 }
1100 }
1101 }
1102#endif
1103
862 for (i = 0; i < fdchangecnt; ++i) 1104 for (i = 0; i < fdchangecnt; ++i)
863 { 1105 {
864 int fd = fdchanges [i]; 1106 int fd = fdchanges [i];
865 ANFD *anfd = anfds + fd; 1107 ANFD *anfd = anfds + fd;
866 ev_io *w; 1108 ev_io *w;
867 1109
868 unsigned char events = 0; 1110 unsigned char o_events = anfd->events;
1111 unsigned char o_reify = anfd->reify;
869 1112
870 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1113 anfd->reify = 0;
871 events |= (unsigned char)w->events;
872 1114
873#if EV_SELECT_IS_WINSOCKET 1115 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
874 if (events)
875 { 1116 {
876 unsigned long arg; 1117 anfd->events = 0;
877 #ifdef EV_FD_TO_WIN32_HANDLE 1118
878 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1119 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
879 #else 1120 anfd->events |= (unsigned char)w->events;
880 anfd->handle = _get_osfhandle (fd); 1121
881 #endif 1122 if (o_events != anfd->events)
882 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1123 o_reify = EV__IOFDSET; /* actually |= */
883 } 1124 }
884#endif
885 1125
886 { 1126 if (o_reify & EV__IOFDSET)
887 unsigned char o_events = anfd->events;
888 unsigned char o_reify = anfd->reify;
889
890 anfd->reify = 0;
891 anfd->events = events;
892
893 if (o_events != events || o_reify & EV__IOFDSET)
894 backend_modify (EV_A_ fd, o_events, events); 1127 backend_modify (EV_A_ fd, o_events, anfd->events);
895 }
896 } 1128 }
897 1129
898 fdchangecnt = 0; 1130 fdchangecnt = 0;
899} 1131}
900 1132
… …
912 fdchanges [fdchangecnt - 1] = fd; 1144 fdchanges [fdchangecnt - 1] = fd;
913 } 1145 }
914} 1146}
915 1147
916/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1148/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
917inline_speed void 1149inline_speed void ecb_cold
918fd_kill (EV_P_ int fd) 1150fd_kill (EV_P_ int fd)
919{ 1151{
920 ev_io *w; 1152 ev_io *w;
921 1153
922 while ((w = (ev_io *)anfds [fd].head)) 1154 while ((w = (ev_io *)anfds [fd].head))
… …
924 ev_io_stop (EV_A_ w); 1156 ev_io_stop (EV_A_ w);
925 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1157 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
926 } 1158 }
927} 1159}
928 1160
929/* check whether the given fd is atcually valid, for error recovery */ 1161/* check whether the given fd is actually valid, for error recovery */
930inline_size int 1162inline_size int ecb_cold
931fd_valid (int fd) 1163fd_valid (int fd)
932{ 1164{
933#ifdef _WIN32 1165#ifdef _WIN32
934 return _get_osfhandle (fd) != -1; 1166 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
935#else 1167#else
936 return fcntl (fd, F_GETFD) != -1; 1168 return fcntl (fd, F_GETFD) != -1;
937#endif 1169#endif
938} 1170}
939 1171
940/* called on EBADF to verify fds */ 1172/* called on EBADF to verify fds */
941static void noinline 1173static void noinline ecb_cold
942fd_ebadf (EV_P) 1174fd_ebadf (EV_P)
943{ 1175{
944 int fd; 1176 int fd;
945 1177
946 for (fd = 0; fd < anfdmax; ++fd) 1178 for (fd = 0; fd < anfdmax; ++fd)
… …
948 if (!fd_valid (fd) && errno == EBADF) 1180 if (!fd_valid (fd) && errno == EBADF)
949 fd_kill (EV_A_ fd); 1181 fd_kill (EV_A_ fd);
950} 1182}
951 1183
952/* called on ENOMEM in select/poll to kill some fds and retry */ 1184/* called on ENOMEM in select/poll to kill some fds and retry */
953static void noinline 1185static void noinline ecb_cold
954fd_enomem (EV_P) 1186fd_enomem (EV_P)
955{ 1187{
956 int fd; 1188 int fd;
957 1189
958 for (fd = anfdmax; fd--; ) 1190 for (fd = anfdmax; fd--; )
… …
976 anfds [fd].emask = 0; 1208 anfds [fd].emask = 0;
977 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1209 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
978 } 1210 }
979} 1211}
980 1212
1213/* used to prepare libev internal fd's */
1214/* this is not fork-safe */
1215inline_speed void
1216fd_intern (int fd)
1217{
1218#ifdef _WIN32
1219 unsigned long arg = 1;
1220 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1221#else
1222 fcntl (fd, F_SETFD, FD_CLOEXEC);
1223 fcntl (fd, F_SETFL, O_NONBLOCK);
1224#endif
1225}
1226
981/*****************************************************************************/ 1227/*****************************************************************************/
982 1228
983/* 1229/*
984 * the heap functions want a real array index. array index 0 uis guaranteed to not 1230 * the heap functions want a real array index. array index 0 is guaranteed to not
985 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1231 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
986 * the branching factor of the d-tree. 1232 * the branching factor of the d-tree.
987 */ 1233 */
988 1234
989/* 1235/*
… …
1057 1303
1058 for (;;) 1304 for (;;)
1059 { 1305 {
1060 int c = k << 1; 1306 int c = k << 1;
1061 1307
1062 if (c > N + HEAP0 - 1) 1308 if (c >= N + HEAP0)
1063 break; 1309 break;
1064 1310
1065 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1311 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1066 ? 1 : 0; 1312 ? 1 : 0;
1067 1313
… …
1103 1349
1104/* move an element suitably so it is in a correct place */ 1350/* move an element suitably so it is in a correct place */
1105inline_size void 1351inline_size void
1106adjustheap (ANHE *heap, int N, int k) 1352adjustheap (ANHE *heap, int N, int k)
1107{ 1353{
1108 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1354 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1109 upheap (heap, k); 1355 upheap (heap, k);
1110 else 1356 else
1111 downheap (heap, N, k); 1357 downheap (heap, N, k);
1112} 1358}
1113 1359
… …
1137 1383
1138static ANSIG signals [EV_NSIG - 1]; 1384static ANSIG signals [EV_NSIG - 1];
1139 1385
1140/*****************************************************************************/ 1386/*****************************************************************************/
1141 1387
1142/* used to prepare libev internal fd's */ 1388#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1143/* this is not fork-safe */
1144inline_speed void
1145fd_intern (int fd)
1146{
1147#ifdef _WIN32
1148 unsigned long arg = 1;
1149 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1150#else
1151 fcntl (fd, F_SETFD, FD_CLOEXEC);
1152 fcntl (fd, F_SETFL, O_NONBLOCK);
1153#endif
1154}
1155 1389
1156static void noinline 1390static void noinline ecb_cold
1157evpipe_init (EV_P) 1391evpipe_init (EV_P)
1158{ 1392{
1159 if (!ev_is_active (&pipe_w)) 1393 if (!ev_is_active (&pipe_w))
1160 { 1394 {
1161#if EV_USE_EVENTFD 1395# if EV_USE_EVENTFD
1162 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1396 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1163 if (evfd < 0 && errno == EINVAL) 1397 if (evfd < 0 && errno == EINVAL)
1164 evfd = eventfd (0, 0); 1398 evfd = eventfd (0, 0);
1165 1399
1166 if (evfd >= 0) 1400 if (evfd >= 0)
… …
1168 evpipe [0] = -1; 1402 evpipe [0] = -1;
1169 fd_intern (evfd); /* doing it twice doesn't hurt */ 1403 fd_intern (evfd); /* doing it twice doesn't hurt */
1170 ev_io_set (&pipe_w, evfd, EV_READ); 1404 ev_io_set (&pipe_w, evfd, EV_READ);
1171 } 1405 }
1172 else 1406 else
1173#endif 1407# endif
1174 { 1408 {
1175 while (pipe (evpipe)) 1409 while (pipe (evpipe))
1176 ev_syserr ("(libev) error creating signal/async pipe"); 1410 ev_syserr ("(libev) error creating signal/async pipe");
1177 1411
1178 fd_intern (evpipe [0]); 1412 fd_intern (evpipe [0]);
… …
1188inline_size void 1422inline_size void
1189evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1423evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1190{ 1424{
1191 if (!*flag) 1425 if (!*flag)
1192 { 1426 {
1193 int old_errno = errno; /* save errno because write might clobber it */
1194
1195 *flag = 1; 1427 *flag = 1;
1196 1428
1429 pipe_write_skipped = 1;
1430
1431 if (pipe_write_wanted)
1432 {
1433 int old_errno = errno; /* save errno because write will clobber it */
1434 char dummy;
1435
1436 pipe_write_skipped = 0;
1437
1197#if EV_USE_EVENTFD 1438#if EV_USE_EVENTFD
1198 if (evfd >= 0) 1439 if (evfd >= 0)
1199 { 1440 {
1200 uint64_t counter = 1; 1441 uint64_t counter = 1;
1201 write (evfd, &counter, sizeof (uint64_t)); 1442 write (evfd, &counter, sizeof (uint64_t));
1443 }
1444 else
1445#endif
1446 {
1447 /* win32 people keep sending patches that change this write() to send() */
1448 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1449 /* so when you think this write should be a send instead, please find out */
1450 /* where your send() is from - it's definitely not the microsoft send, and */
1451 /* tell me. thank you. */
1452 write (evpipe [1], &dummy, 1);
1453 }
1454
1455 errno = old_errno;
1202 } 1456 }
1203 else
1204#endif
1205 write (evpipe [1], &old_errno, 1);
1206
1207 errno = old_errno;
1208 } 1457 }
1209} 1458}
1210 1459
1211/* called whenever the libev signal pipe */ 1460/* called whenever the libev signal pipe */
1212/* got some events (signal, async) */ 1461/* got some events (signal, async) */
1213static void 1462static void
1214pipecb (EV_P_ ev_io *iow, int revents) 1463pipecb (EV_P_ ev_io *iow, int revents)
1215{ 1464{
1216 int i; 1465 int i;
1217 1466
1467 if (revents & EV_READ)
1468 {
1218#if EV_USE_EVENTFD 1469#if EV_USE_EVENTFD
1219 if (evfd >= 0) 1470 if (evfd >= 0)
1220 { 1471 {
1221 uint64_t counter; 1472 uint64_t counter;
1222 read (evfd, &counter, sizeof (uint64_t)); 1473 read (evfd, &counter, sizeof (uint64_t));
1223 } 1474 }
1224 else 1475 else
1225#endif 1476#endif
1226 { 1477 {
1227 char dummy; 1478 char dummy;
1479 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1228 read (evpipe [0], &dummy, 1); 1480 read (evpipe [0], &dummy, 1);
1481 }
1229 } 1482 }
1230 1483
1484 pipe_write_skipped = 0;
1485
1486#if EV_SIGNAL_ENABLE
1231 if (sig_pending) 1487 if (sig_pending)
1232 { 1488 {
1233 sig_pending = 0; 1489 sig_pending = 0;
1234 1490
1235 for (i = EV_NSIG - 1; i--; ) 1491 for (i = EV_NSIG - 1; i--; )
1236 if (expect_false (signals [i].pending)) 1492 if (expect_false (signals [i].pending))
1237 ev_feed_signal_event (EV_A_ i + 1); 1493 ev_feed_signal_event (EV_A_ i + 1);
1238 } 1494 }
1495#endif
1239 1496
1240#if EV_ASYNC_ENABLE 1497#if EV_ASYNC_ENABLE
1241 if (async_pending) 1498 if (async_pending)
1242 { 1499 {
1243 async_pending = 0; 1500 async_pending = 0;
… …
1252#endif 1509#endif
1253} 1510}
1254 1511
1255/*****************************************************************************/ 1512/*****************************************************************************/
1256 1513
1514void
1515ev_feed_signal (int signum)
1516{
1517#if EV_MULTIPLICITY
1518 EV_P = signals [signum - 1].loop;
1519
1520 if (!EV_A)
1521 return;
1522#endif
1523
1524 evpipe_init (EV_A);
1525
1526 signals [signum - 1].pending = 1;
1527 evpipe_write (EV_A_ &sig_pending);
1528}
1529
1257static void 1530static void
1258ev_sighandler (int signum) 1531ev_sighandler (int signum)
1259{ 1532{
1260#if EV_MULTIPLICITY
1261 EV_P = signals [signum - 1].loop;
1262#endif
1263
1264#if _WIN32 1533#ifdef _WIN32
1265 signal (signum, ev_sighandler); 1534 signal (signum, ev_sighandler);
1266#endif 1535#endif
1267 1536
1268 signals [signum - 1].pending = 1; 1537 ev_feed_signal (signum);
1269 evpipe_write (EV_A_ &sig_pending);
1270} 1538}
1271 1539
1272void noinline 1540void noinline
1273ev_feed_signal_event (EV_P_ int signum) 1541ev_feed_signal_event (EV_P_ int signum)
1274{ 1542{
… …
1311 break; 1579 break;
1312 } 1580 }
1313} 1581}
1314#endif 1582#endif
1315 1583
1584#endif
1585
1316/*****************************************************************************/ 1586/*****************************************************************************/
1317 1587
1588#if EV_CHILD_ENABLE
1318static WL childs [EV_PID_HASHSIZE]; 1589static WL childs [EV_PID_HASHSIZE];
1319
1320#ifndef _WIN32
1321 1590
1322static ev_signal childev; 1591static ev_signal childev;
1323 1592
1324#ifndef WIFCONTINUED 1593#ifndef WIFCONTINUED
1325# define WIFCONTINUED(status) 0 1594# define WIFCONTINUED(status) 0
… …
1330child_reap (EV_P_ int chain, int pid, int status) 1599child_reap (EV_P_ int chain, int pid, int status)
1331{ 1600{
1332 ev_child *w; 1601 ev_child *w;
1333 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1602 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1334 1603
1335 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1604 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1336 { 1605 {
1337 if ((w->pid == pid || !w->pid) 1606 if ((w->pid == pid || !w->pid)
1338 && (!traced || (w->flags & 1))) 1607 && (!traced || (w->flags & 1)))
1339 { 1608 {
1340 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1609 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1365 /* make sure we are called again until all children have been reaped */ 1634 /* make sure we are called again until all children have been reaped */
1366 /* we need to do it this way so that the callback gets called before we continue */ 1635 /* we need to do it this way so that the callback gets called before we continue */
1367 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1636 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1368 1637
1369 child_reap (EV_A_ pid, pid, status); 1638 child_reap (EV_A_ pid, pid, status);
1370 if (EV_PID_HASHSIZE > 1) 1639 if ((EV_PID_HASHSIZE) > 1)
1371 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1640 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1372} 1641}
1373 1642
1374#endif 1643#endif
1375 1644
1376/*****************************************************************************/ 1645/*****************************************************************************/
1377 1646
1647#if EV_USE_IOCP
1648# include "ev_iocp.c"
1649#endif
1378#if EV_USE_PORT 1650#if EV_USE_PORT
1379# include "ev_port.c" 1651# include "ev_port.c"
1380#endif 1652#endif
1381#if EV_USE_KQUEUE 1653#if EV_USE_KQUEUE
1382# include "ev_kqueue.c" 1654# include "ev_kqueue.c"
… …
1389#endif 1661#endif
1390#if EV_USE_SELECT 1662#if EV_USE_SELECT
1391# include "ev_select.c" 1663# include "ev_select.c"
1392#endif 1664#endif
1393 1665
1394int 1666int ecb_cold
1395ev_version_major (void) 1667ev_version_major (void)
1396{ 1668{
1397 return EV_VERSION_MAJOR; 1669 return EV_VERSION_MAJOR;
1398} 1670}
1399 1671
1400int 1672int ecb_cold
1401ev_version_minor (void) 1673ev_version_minor (void)
1402{ 1674{
1403 return EV_VERSION_MINOR; 1675 return EV_VERSION_MINOR;
1404} 1676}
1405 1677
1406/* return true if we are running with elevated privileges and should ignore env variables */ 1678/* return true if we are running with elevated privileges and should ignore env variables */
1407int inline_size 1679int inline_size ecb_cold
1408enable_secure (void) 1680enable_secure (void)
1409{ 1681{
1410#ifdef _WIN32 1682#ifdef _WIN32
1411 return 0; 1683 return 0;
1412#else 1684#else
1413 return getuid () != geteuid () 1685 return getuid () != geteuid ()
1414 || getgid () != getegid (); 1686 || getgid () != getegid ();
1415#endif 1687#endif
1416} 1688}
1417 1689
1418unsigned int 1690unsigned int ecb_cold
1419ev_supported_backends (void) 1691ev_supported_backends (void)
1420{ 1692{
1421 unsigned int flags = 0; 1693 unsigned int flags = 0;
1422 1694
1423 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1695 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1427 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1699 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1428 1700
1429 return flags; 1701 return flags;
1430} 1702}
1431 1703
1432unsigned int 1704unsigned int ecb_cold
1433ev_recommended_backends (void) 1705ev_recommended_backends (void)
1434{ 1706{
1435 unsigned int flags = ev_supported_backends (); 1707 unsigned int flags = ev_supported_backends ();
1436 1708
1437#ifndef __NetBSD__ 1709#ifndef __NetBSD__
… …
1442#ifdef __APPLE__ 1714#ifdef __APPLE__
1443 /* only select works correctly on that "unix-certified" platform */ 1715 /* only select works correctly on that "unix-certified" platform */
1444 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1716 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1445 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1717 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1446#endif 1718#endif
1719#ifdef __FreeBSD__
1720 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1721#endif
1447 1722
1448 return flags; 1723 return flags;
1449} 1724}
1450 1725
1451unsigned int 1726unsigned int ecb_cold
1452ev_embeddable_backends (void) 1727ev_embeddable_backends (void)
1453{ 1728{
1454 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1729 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1455 1730
1456 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1731 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1457 /* please fix it and tell me how to detect the fix */ 1732 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1458 flags &= ~EVBACKEND_EPOLL; 1733 flags &= ~EVBACKEND_EPOLL;
1459 1734
1460 return flags; 1735 return flags;
1461} 1736}
1462 1737
1463unsigned int 1738unsigned int
1464ev_backend (EV_P) 1739ev_backend (EV_P)
1465{ 1740{
1466 return backend; 1741 return backend;
1467} 1742}
1468 1743
1469#if EV_MINIMAL < 2 1744#if EV_FEATURE_API
1470unsigned int 1745unsigned int
1471ev_loop_count (EV_P) 1746ev_iteration (EV_P)
1472{ 1747{
1473 return loop_count; 1748 return loop_count;
1474} 1749}
1475 1750
1476unsigned int 1751unsigned int
1477ev_loop_depth (EV_P) 1752ev_depth (EV_P)
1478{ 1753{
1479 return loop_depth; 1754 return loop_depth;
1480} 1755}
1481 1756
1482void 1757void
… …
1501ev_userdata (EV_P) 1776ev_userdata (EV_P)
1502{ 1777{
1503 return userdata; 1778 return userdata;
1504} 1779}
1505 1780
1781void
1506void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 1782ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1507{ 1783{
1508 invoke_cb = invoke_pending_cb; 1784 invoke_cb = invoke_pending_cb;
1509} 1785}
1510 1786
1787void
1511void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 1788ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1512{ 1789{
1513 release_cb = release; 1790 release_cb = release;
1514 acquire_cb = acquire; 1791 acquire_cb = acquire;
1515} 1792}
1516#endif 1793#endif
1517 1794
1518/* initialise a loop structure, must be zero-initialised */ 1795/* initialise a loop structure, must be zero-initialised */
1519static void noinline 1796static void noinline ecb_cold
1520loop_init (EV_P_ unsigned int flags) 1797loop_init (EV_P_ unsigned int flags)
1521{ 1798{
1522 if (!backend) 1799 if (!backend)
1523 { 1800 {
1801 origflags = flags;
1802
1524#if EV_USE_REALTIME 1803#if EV_USE_REALTIME
1525 if (!have_realtime) 1804 if (!have_realtime)
1526 { 1805 {
1527 struct timespec ts; 1806 struct timespec ts;
1528 1807
… …
1550 if (!(flags & EVFLAG_NOENV) 1829 if (!(flags & EVFLAG_NOENV)
1551 && !enable_secure () 1830 && !enable_secure ()
1552 && getenv ("LIBEV_FLAGS")) 1831 && getenv ("LIBEV_FLAGS"))
1553 flags = atoi (getenv ("LIBEV_FLAGS")); 1832 flags = atoi (getenv ("LIBEV_FLAGS"));
1554 1833
1555 ev_rt_now = ev_time (); 1834 ev_rt_now = ev_time ();
1556 mn_now = get_clock (); 1835 mn_now = get_clock ();
1557 now_floor = mn_now; 1836 now_floor = mn_now;
1558 rtmn_diff = ev_rt_now - mn_now; 1837 rtmn_diff = ev_rt_now - mn_now;
1559#if EV_MINIMAL < 2 1838#if EV_FEATURE_API
1560 invoke_cb = ev_invoke_pending; 1839 invoke_cb = ev_invoke_pending;
1561#endif 1840#endif
1562 1841
1563 io_blocktime = 0.; 1842 io_blocktime = 0.;
1564 timeout_blocktime = 0.; 1843 timeout_blocktime = 0.;
1565 backend = 0; 1844 backend = 0;
1566 backend_fd = -1; 1845 backend_fd = -1;
1567 sig_pending = 0; 1846 sig_pending = 0;
1568#if EV_ASYNC_ENABLE 1847#if EV_ASYNC_ENABLE
1569 async_pending = 0; 1848 async_pending = 0;
1570#endif 1849#endif
1850 pipe_write_skipped = 0;
1851 pipe_write_wanted = 0;
1571#if EV_USE_INOTIFY 1852#if EV_USE_INOTIFY
1572 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 1853 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1573#endif 1854#endif
1574#if EV_USE_SIGNALFD 1855#if EV_USE_SIGNALFD
1575 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 1856 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1576#endif 1857#endif
1577 1858
1578 if (!(flags & 0x0000ffffU)) 1859 if (!(flags & EVBACKEND_MASK))
1579 flags |= ev_recommended_backends (); 1860 flags |= ev_recommended_backends ();
1580 1861
1862#if EV_USE_IOCP
1863 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1864#endif
1581#if EV_USE_PORT 1865#if EV_USE_PORT
1582 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1866 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1583#endif 1867#endif
1584#if EV_USE_KQUEUE 1868#if EV_USE_KQUEUE
1585 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1869 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1594 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1878 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1595#endif 1879#endif
1596 1880
1597 ev_prepare_init (&pending_w, pendingcb); 1881 ev_prepare_init (&pending_w, pendingcb);
1598 1882
1883#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1599 ev_init (&pipe_w, pipecb); 1884 ev_init (&pipe_w, pipecb);
1600 ev_set_priority (&pipe_w, EV_MAXPRI); 1885 ev_set_priority (&pipe_w, EV_MAXPRI);
1886#endif
1601 } 1887 }
1602} 1888}
1603 1889
1604/* free up a loop structure */ 1890/* free up a loop structure */
1605static void noinline 1891void ecb_cold
1606loop_destroy (EV_P) 1892ev_loop_destroy (EV_P)
1607{ 1893{
1608 int i; 1894 int i;
1895
1896#if EV_MULTIPLICITY
1897 /* mimic free (0) */
1898 if (!EV_A)
1899 return;
1900#endif
1901
1902#if EV_CLEANUP_ENABLE
1903 /* queue cleanup watchers (and execute them) */
1904 if (expect_false (cleanupcnt))
1905 {
1906 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1907 EV_INVOKE_PENDING;
1908 }
1909#endif
1910
1911#if EV_CHILD_ENABLE
1912 if (ev_is_active (&childev))
1913 {
1914 ev_ref (EV_A); /* child watcher */
1915 ev_signal_stop (EV_A_ &childev);
1916 }
1917#endif
1609 1918
1610 if (ev_is_active (&pipe_w)) 1919 if (ev_is_active (&pipe_w))
1611 { 1920 {
1612 /*ev_ref (EV_A);*/ 1921 /*ev_ref (EV_A);*/
1613 /*ev_io_stop (EV_A_ &pipe_w);*/ 1922 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1617 close (evfd); 1926 close (evfd);
1618#endif 1927#endif
1619 1928
1620 if (evpipe [0] >= 0) 1929 if (evpipe [0] >= 0)
1621 { 1930 {
1622 close (evpipe [0]); 1931 EV_WIN32_CLOSE_FD (evpipe [0]);
1623 close (evpipe [1]); 1932 EV_WIN32_CLOSE_FD (evpipe [1]);
1624 } 1933 }
1625 } 1934 }
1626 1935
1627#if EV_USE_SIGNALFD 1936#if EV_USE_SIGNALFD
1628 if (ev_is_active (&sigfd_w)) 1937 if (ev_is_active (&sigfd_w))
1629 {
1630 /*ev_ref (EV_A);*/
1631 /*ev_io_stop (EV_A_ &sigfd_w);*/
1632
1633 close (sigfd); 1938 close (sigfd);
1634 }
1635#endif 1939#endif
1636 1940
1637#if EV_USE_INOTIFY 1941#if EV_USE_INOTIFY
1638 if (fs_fd >= 0) 1942 if (fs_fd >= 0)
1639 close (fs_fd); 1943 close (fs_fd);
1640#endif 1944#endif
1641 1945
1642 if (backend_fd >= 0) 1946 if (backend_fd >= 0)
1643 close (backend_fd); 1947 close (backend_fd);
1644 1948
1949#if EV_USE_IOCP
1950 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1951#endif
1645#if EV_USE_PORT 1952#if EV_USE_PORT
1646 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1953 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1647#endif 1954#endif
1648#if EV_USE_KQUEUE 1955#if EV_USE_KQUEUE
1649 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1956 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1676 array_free (periodic, EMPTY); 1983 array_free (periodic, EMPTY);
1677#endif 1984#endif
1678#if EV_FORK_ENABLE 1985#if EV_FORK_ENABLE
1679 array_free (fork, EMPTY); 1986 array_free (fork, EMPTY);
1680#endif 1987#endif
1988#if EV_CLEANUP_ENABLE
1989 array_free (cleanup, EMPTY);
1990#endif
1681 array_free (prepare, EMPTY); 1991 array_free (prepare, EMPTY);
1682 array_free (check, EMPTY); 1992 array_free (check, EMPTY);
1683#if EV_ASYNC_ENABLE 1993#if EV_ASYNC_ENABLE
1684 array_free (async, EMPTY); 1994 array_free (async, EMPTY);
1685#endif 1995#endif
1686 1996
1687 backend = 0; 1997 backend = 0;
1998
1999#if EV_MULTIPLICITY
2000 if (ev_is_default_loop (EV_A))
2001#endif
2002 ev_default_loop_ptr = 0;
2003#if EV_MULTIPLICITY
2004 else
2005 ev_free (EV_A);
2006#endif
1688} 2007}
1689 2008
1690#if EV_USE_INOTIFY 2009#if EV_USE_INOTIFY
1691inline_size void infy_fork (EV_P); 2010inline_size void infy_fork (EV_P);
1692#endif 2011#endif
… …
1707 infy_fork (EV_A); 2026 infy_fork (EV_A);
1708#endif 2027#endif
1709 2028
1710 if (ev_is_active (&pipe_w)) 2029 if (ev_is_active (&pipe_w))
1711 { 2030 {
1712 /* this "locks" the handlers against writing to the pipe */ 2031 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1713 /* while we modify the fd vars */
1714 sig_pending = 1;
1715#if EV_ASYNC_ENABLE
1716 async_pending = 1;
1717#endif
1718 2032
1719 ev_ref (EV_A); 2033 ev_ref (EV_A);
1720 ev_io_stop (EV_A_ &pipe_w); 2034 ev_io_stop (EV_A_ &pipe_w);
1721 2035
1722#if EV_USE_EVENTFD 2036#if EV_USE_EVENTFD
… …
1724 close (evfd); 2038 close (evfd);
1725#endif 2039#endif
1726 2040
1727 if (evpipe [0] >= 0) 2041 if (evpipe [0] >= 0)
1728 { 2042 {
1729 close (evpipe [0]); 2043 EV_WIN32_CLOSE_FD (evpipe [0]);
1730 close (evpipe [1]); 2044 EV_WIN32_CLOSE_FD (evpipe [1]);
1731 } 2045 }
1732 2046
2047#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1733 evpipe_init (EV_A); 2048 evpipe_init (EV_A);
1734 /* now iterate over everything, in case we missed something */ 2049 /* now iterate over everything, in case we missed something */
1735 pipecb (EV_A_ &pipe_w, EV_READ); 2050 pipecb (EV_A_ &pipe_w, EV_READ);
2051#endif
1736 } 2052 }
1737 2053
1738 postfork = 0; 2054 postfork = 0;
1739} 2055}
1740 2056
1741#if EV_MULTIPLICITY 2057#if EV_MULTIPLICITY
1742 2058
1743struct ev_loop * 2059struct ev_loop * ecb_cold
1744ev_loop_new (unsigned int flags) 2060ev_loop_new (unsigned int flags)
1745{ 2061{
1746 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2062 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1747 2063
1748 memset (EV_A, 0, sizeof (struct ev_loop)); 2064 memset (EV_A, 0, sizeof (struct ev_loop));
1749 loop_init (EV_A_ flags); 2065 loop_init (EV_A_ flags);
1750 2066
1751 if (ev_backend (EV_A)) 2067 if (ev_backend (EV_A))
1752 return EV_A; 2068 return EV_A;
1753 2069
2070 ev_free (EV_A);
1754 return 0; 2071 return 0;
1755} 2072}
1756 2073
1757void
1758ev_loop_destroy (EV_P)
1759{
1760 loop_destroy (EV_A);
1761 ev_free (loop);
1762}
1763
1764void
1765ev_loop_fork (EV_P)
1766{
1767 postfork = 1; /* must be in line with ev_default_fork */
1768}
1769#endif /* multiplicity */ 2074#endif /* multiplicity */
1770 2075
1771#if EV_VERIFY 2076#if EV_VERIFY
1772static void noinline 2077static void noinline ecb_cold
1773verify_watcher (EV_P_ W w) 2078verify_watcher (EV_P_ W w)
1774{ 2079{
1775 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2080 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1776 2081
1777 if (w->pending) 2082 if (w->pending)
1778 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2083 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1779} 2084}
1780 2085
1781static void noinline 2086static void noinline ecb_cold
1782verify_heap (EV_P_ ANHE *heap, int N) 2087verify_heap (EV_P_ ANHE *heap, int N)
1783{ 2088{
1784 int i; 2089 int i;
1785 2090
1786 for (i = HEAP0; i < N + HEAP0; ++i) 2091 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1791 2096
1792 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2097 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1793 } 2098 }
1794} 2099}
1795 2100
1796static void noinline 2101static void noinline ecb_cold
1797array_verify (EV_P_ W *ws, int cnt) 2102array_verify (EV_P_ W *ws, int cnt)
1798{ 2103{
1799 while (cnt--) 2104 while (cnt--)
1800 { 2105 {
1801 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2106 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1802 verify_watcher (EV_A_ ws [cnt]); 2107 verify_watcher (EV_A_ ws [cnt]);
1803 } 2108 }
1804} 2109}
1805#endif 2110#endif
1806 2111
1807#if EV_MINIMAL < 2 2112#if EV_FEATURE_API
1808void 2113void ecb_cold
1809ev_loop_verify (EV_P) 2114ev_verify (EV_P)
1810{ 2115{
1811#if EV_VERIFY 2116#if EV_VERIFY
1812 int i; 2117 int i;
1813 WL w; 2118 WL w;
1814 2119
… …
1848#if EV_FORK_ENABLE 2153#if EV_FORK_ENABLE
1849 assert (forkmax >= forkcnt); 2154 assert (forkmax >= forkcnt);
1850 array_verify (EV_A_ (W *)forks, forkcnt); 2155 array_verify (EV_A_ (W *)forks, forkcnt);
1851#endif 2156#endif
1852 2157
2158#if EV_CLEANUP_ENABLE
2159 assert (cleanupmax >= cleanupcnt);
2160 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2161#endif
2162
1853#if EV_ASYNC_ENABLE 2163#if EV_ASYNC_ENABLE
1854 assert (asyncmax >= asynccnt); 2164 assert (asyncmax >= asynccnt);
1855 array_verify (EV_A_ (W *)asyncs, asynccnt); 2165 array_verify (EV_A_ (W *)asyncs, asynccnt);
1856#endif 2166#endif
1857 2167
2168#if EV_PREPARE_ENABLE
1858 assert (preparemax >= preparecnt); 2169 assert (preparemax >= preparecnt);
1859 array_verify (EV_A_ (W *)prepares, preparecnt); 2170 array_verify (EV_A_ (W *)prepares, preparecnt);
2171#endif
1860 2172
2173#if EV_CHECK_ENABLE
1861 assert (checkmax >= checkcnt); 2174 assert (checkmax >= checkcnt);
1862 array_verify (EV_A_ (W *)checks, checkcnt); 2175 array_verify (EV_A_ (W *)checks, checkcnt);
2176#endif
1863 2177
1864# if 0 2178# if 0
2179#if EV_CHILD_ENABLE
1865 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2180 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1866 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2181 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2182#endif
1867# endif 2183# endif
1868#endif 2184#endif
1869} 2185}
1870#endif 2186#endif
1871 2187
1872#if EV_MULTIPLICITY 2188#if EV_MULTIPLICITY
1873struct ev_loop * 2189struct ev_loop * ecb_cold
1874ev_default_loop_init (unsigned int flags)
1875#else 2190#else
1876int 2191int
2192#endif
1877ev_default_loop (unsigned int flags) 2193ev_default_loop (unsigned int flags)
1878#endif
1879{ 2194{
1880 if (!ev_default_loop_ptr) 2195 if (!ev_default_loop_ptr)
1881 { 2196 {
1882#if EV_MULTIPLICITY 2197#if EV_MULTIPLICITY
1883 EV_P = ev_default_loop_ptr = &default_loop_struct; 2198 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1887 2202
1888 loop_init (EV_A_ flags); 2203 loop_init (EV_A_ flags);
1889 2204
1890 if (ev_backend (EV_A)) 2205 if (ev_backend (EV_A))
1891 { 2206 {
1892#ifndef _WIN32 2207#if EV_CHILD_ENABLE
1893 ev_signal_init (&childev, childcb, SIGCHLD); 2208 ev_signal_init (&childev, childcb, SIGCHLD);
1894 ev_set_priority (&childev, EV_MAXPRI); 2209 ev_set_priority (&childev, EV_MAXPRI);
1895 ev_signal_start (EV_A_ &childev); 2210 ev_signal_start (EV_A_ &childev);
1896 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2211 ev_unref (EV_A); /* child watcher should not keep loop alive */
1897#endif 2212#endif
… …
1902 2217
1903 return ev_default_loop_ptr; 2218 return ev_default_loop_ptr;
1904} 2219}
1905 2220
1906void 2221void
1907ev_default_destroy (void) 2222ev_loop_fork (EV_P)
1908{ 2223{
1909#if EV_MULTIPLICITY
1910 EV_P = ev_default_loop_ptr;
1911#endif
1912
1913 ev_default_loop_ptr = 0;
1914
1915#ifndef _WIN32
1916 ev_ref (EV_A); /* child watcher */
1917 ev_signal_stop (EV_A_ &childev);
1918#endif
1919
1920 loop_destroy (EV_A);
1921}
1922
1923void
1924ev_default_fork (void)
1925{
1926#if EV_MULTIPLICITY
1927 EV_P = ev_default_loop_ptr;
1928#endif
1929
1930 postfork = 1; /* must be in line with ev_loop_fork */ 2224 postfork = 1; /* must be in line with ev_default_fork */
1931} 2225}
1932 2226
1933/*****************************************************************************/ 2227/*****************************************************************************/
1934 2228
1935void 2229void
… …
1957 2251
1958 for (pri = NUMPRI; pri--; ) 2252 for (pri = NUMPRI; pri--; )
1959 while (pendingcnt [pri]) 2253 while (pendingcnt [pri])
1960 { 2254 {
1961 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2255 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1962
1963 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1964 /* ^ this is no longer true, as pending_w could be here */
1965 2256
1966 p->w->pending = 0; 2257 p->w->pending = 0;
1967 EV_CB_INVOKE (p->w, p->events); 2258 EV_CB_INVOKE (p->w, p->events);
1968 EV_FREQUENT_CHECK; 2259 EV_FREQUENT_CHECK;
1969 } 2260 }
… …
2026 EV_FREQUENT_CHECK; 2317 EV_FREQUENT_CHECK;
2027 feed_reverse (EV_A_ (W)w); 2318 feed_reverse (EV_A_ (W)w);
2028 } 2319 }
2029 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2320 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2030 2321
2031 feed_reverse_done (EV_A_ EV_TIMEOUT); 2322 feed_reverse_done (EV_A_ EV_TIMER);
2032 } 2323 }
2033} 2324}
2034 2325
2035#if EV_PERIODIC_ENABLE 2326#if EV_PERIODIC_ENABLE
2327
2328static void noinline
2329periodic_recalc (EV_P_ ev_periodic *w)
2330{
2331 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2332 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2333
2334 /* the above almost always errs on the low side */
2335 while (at <= ev_rt_now)
2336 {
2337 ev_tstamp nat = at + w->interval;
2338
2339 /* when resolution fails us, we use ev_rt_now */
2340 if (expect_false (nat == at))
2341 {
2342 at = ev_rt_now;
2343 break;
2344 }
2345
2346 at = nat;
2347 }
2348
2349 ev_at (w) = at;
2350}
2351
2036/* make periodics pending */ 2352/* make periodics pending */
2037inline_size void 2353inline_size void
2038periodics_reify (EV_P) 2354periodics_reify (EV_P)
2039{ 2355{
2040 EV_FREQUENT_CHECK; 2356 EV_FREQUENT_CHECK;
… …
2059 ANHE_at_cache (periodics [HEAP0]); 2375 ANHE_at_cache (periodics [HEAP0]);
2060 downheap (periodics, periodiccnt, HEAP0); 2376 downheap (periodics, periodiccnt, HEAP0);
2061 } 2377 }
2062 else if (w->interval) 2378 else if (w->interval)
2063 { 2379 {
2064 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2380 periodic_recalc (EV_A_ w);
2065 /* if next trigger time is not sufficiently in the future, put it there */
2066 /* this might happen because of floating point inexactness */
2067 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2068 {
2069 ev_at (w) += w->interval;
2070
2071 /* if interval is unreasonably low we might still have a time in the past */
2072 /* so correct this. this will make the periodic very inexact, but the user */
2073 /* has effectively asked to get triggered more often than possible */
2074 if (ev_at (w) < ev_rt_now)
2075 ev_at (w) = ev_rt_now;
2076 }
2077
2078 ANHE_at_cache (periodics [HEAP0]); 2381 ANHE_at_cache (periodics [HEAP0]);
2079 downheap (periodics, periodiccnt, HEAP0); 2382 downheap (periodics, periodiccnt, HEAP0);
2080 } 2383 }
2081 else 2384 else
2082 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2385 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2089 feed_reverse_done (EV_A_ EV_PERIODIC); 2392 feed_reverse_done (EV_A_ EV_PERIODIC);
2090 } 2393 }
2091} 2394}
2092 2395
2093/* simply recalculate all periodics */ 2396/* simply recalculate all periodics */
2094/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2397/* TODO: maybe ensure that at least one event happens when jumping forward? */
2095static void noinline 2398static void noinline ecb_cold
2096periodics_reschedule (EV_P) 2399periodics_reschedule (EV_P)
2097{ 2400{
2098 int i; 2401 int i;
2099 2402
2100 /* adjust periodics after time jump */ 2403 /* adjust periodics after time jump */
… …
2103 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2406 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2104 2407
2105 if (w->reschedule_cb) 2408 if (w->reschedule_cb)
2106 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2409 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2107 else if (w->interval) 2410 else if (w->interval)
2108 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2411 periodic_recalc (EV_A_ w);
2109 2412
2110 ANHE_at_cache (periodics [i]); 2413 ANHE_at_cache (periodics [i]);
2111 } 2414 }
2112 2415
2113 reheap (periodics, periodiccnt); 2416 reheap (periodics, periodiccnt);
2114} 2417}
2115#endif 2418#endif
2116 2419
2117/* adjust all timers by a given offset */ 2420/* adjust all timers by a given offset */
2118static void noinline 2421static void noinline ecb_cold
2119timers_reschedule (EV_P_ ev_tstamp adjust) 2422timers_reschedule (EV_P_ ev_tstamp adjust)
2120{ 2423{
2121 int i; 2424 int i;
2122 2425
2123 for (i = 0; i < timercnt; ++i) 2426 for (i = 0; i < timercnt; ++i)
… …
2127 ANHE_at_cache (*he); 2430 ANHE_at_cache (*he);
2128 } 2431 }
2129} 2432}
2130 2433
2131/* fetch new monotonic and realtime times from the kernel */ 2434/* fetch new monotonic and realtime times from the kernel */
2132/* also detetc if there was a timejump, and act accordingly */ 2435/* also detect if there was a timejump, and act accordingly */
2133inline_speed void 2436inline_speed void
2134time_update (EV_P_ ev_tstamp max_block) 2437time_update (EV_P_ ev_tstamp max_block)
2135{ 2438{
2136#if EV_USE_MONOTONIC 2439#if EV_USE_MONOTONIC
2137 if (expect_true (have_monotonic)) 2440 if (expect_true (have_monotonic))
… …
2160 * doesn't hurt either as we only do this on time-jumps or 2463 * doesn't hurt either as we only do this on time-jumps or
2161 * in the unlikely event of having been preempted here. 2464 * in the unlikely event of having been preempted here.
2162 */ 2465 */
2163 for (i = 4; --i; ) 2466 for (i = 4; --i; )
2164 { 2467 {
2468 ev_tstamp diff;
2165 rtmn_diff = ev_rt_now - mn_now; 2469 rtmn_diff = ev_rt_now - mn_now;
2166 2470
2471 diff = odiff - rtmn_diff;
2472
2167 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2473 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2168 return; /* all is well */ 2474 return; /* all is well */
2169 2475
2170 ev_rt_now = ev_time (); 2476 ev_rt_now = ev_time ();
2171 mn_now = get_clock (); 2477 mn_now = get_clock ();
2172 now_floor = mn_now; 2478 now_floor = mn_now;
… …
2195 mn_now = ev_rt_now; 2501 mn_now = ev_rt_now;
2196 } 2502 }
2197} 2503}
2198 2504
2199void 2505void
2200ev_loop (EV_P_ int flags) 2506ev_run (EV_P_ int flags)
2201{ 2507{
2202#if EV_MINIMAL < 2 2508#if EV_FEATURE_API
2203 ++loop_depth; 2509 ++loop_depth;
2204#endif 2510#endif
2205 2511
2206 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2512 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2207 2513
2208 loop_done = EVUNLOOP_CANCEL; 2514 loop_done = EVBREAK_CANCEL;
2209 2515
2210 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2516 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2211 2517
2212 do 2518 do
2213 { 2519 {
2214#if EV_VERIFY >= 2 2520#if EV_VERIFY >= 2
2215 ev_loop_verify (EV_A); 2521 ev_verify (EV_A);
2216#endif 2522#endif
2217 2523
2218#ifndef _WIN32 2524#ifndef _WIN32
2219 if (expect_false (curpid)) /* penalise the forking check even more */ 2525 if (expect_false (curpid)) /* penalise the forking check even more */
2220 if (expect_false (getpid () != curpid)) 2526 if (expect_false (getpid () != curpid))
… …
2232 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2538 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2233 EV_INVOKE_PENDING; 2539 EV_INVOKE_PENDING;
2234 } 2540 }
2235#endif 2541#endif
2236 2542
2543#if EV_PREPARE_ENABLE
2237 /* queue prepare watchers (and execute them) */ 2544 /* queue prepare watchers (and execute them) */
2238 if (expect_false (preparecnt)) 2545 if (expect_false (preparecnt))
2239 { 2546 {
2240 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2547 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2241 EV_INVOKE_PENDING; 2548 EV_INVOKE_PENDING;
2242 } 2549 }
2550#endif
2243 2551
2244 if (expect_false (loop_done)) 2552 if (expect_false (loop_done))
2245 break; 2553 break;
2246 2554
2247 /* we might have forked, so reify kernel state if necessary */ 2555 /* we might have forked, so reify kernel state if necessary */
… …
2254 /* calculate blocking time */ 2562 /* calculate blocking time */
2255 { 2563 {
2256 ev_tstamp waittime = 0.; 2564 ev_tstamp waittime = 0.;
2257 ev_tstamp sleeptime = 0.; 2565 ev_tstamp sleeptime = 0.;
2258 2566
2567 /* remember old timestamp for io_blocktime calculation */
2568 ev_tstamp prev_mn_now = mn_now;
2569
2570 /* update time to cancel out callback processing overhead */
2571 time_update (EV_A_ 1e100);
2572
2573 /* from now on, we want a pipe-wake-up */
2574 pipe_write_wanted = 1;
2575
2259 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2576 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2260 { 2577 {
2261 /* remember old timestamp for io_blocktime calculation */
2262 ev_tstamp prev_mn_now = mn_now;
2263
2264 /* update time to cancel out callback processing overhead */
2265 time_update (EV_A_ 1e100);
2266
2267 waittime = MAX_BLOCKTIME; 2578 waittime = MAX_BLOCKTIME;
2268 2579
2269 if (timercnt) 2580 if (timercnt)
2270 { 2581 {
2271 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2582 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2272 if (waittime > to) waittime = to; 2583 if (waittime > to) waittime = to;
2273 } 2584 }
2274 2585
2275#if EV_PERIODIC_ENABLE 2586#if EV_PERIODIC_ENABLE
2276 if (periodiccnt) 2587 if (periodiccnt)
2277 { 2588 {
2278 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2589 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2279 if (waittime > to) waittime = to; 2590 if (waittime > to) waittime = to;
2280 } 2591 }
2281#endif 2592#endif
2282 2593
2283 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2594 /* don't let timeouts decrease the waittime below timeout_blocktime */
2284 if (expect_false (waittime < timeout_blocktime)) 2595 if (expect_false (waittime < timeout_blocktime))
2285 waittime = timeout_blocktime; 2596 waittime = timeout_blocktime;
2597
2598 /* at this point, we NEED to wait, so we have to ensure */
2599 /* to pass a minimum nonzero value to the backend */
2600 if (expect_false (waittime < backend_mintime))
2601 waittime = backend_mintime;
2286 2602
2287 /* extra check because io_blocktime is commonly 0 */ 2603 /* extra check because io_blocktime is commonly 0 */
2288 if (expect_false (io_blocktime)) 2604 if (expect_false (io_blocktime))
2289 { 2605 {
2290 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2606 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2291 2607
2292 if (sleeptime > waittime - backend_fudge) 2608 if (sleeptime > waittime - backend_mintime)
2293 sleeptime = waittime - backend_fudge; 2609 sleeptime = waittime - backend_mintime;
2294 2610
2295 if (expect_true (sleeptime > 0.)) 2611 if (expect_true (sleeptime > 0.))
2296 { 2612 {
2297 ev_sleep (sleeptime); 2613 ev_sleep (sleeptime);
2298 waittime -= sleeptime; 2614 waittime -= sleeptime;
2299 } 2615 }
2300 } 2616 }
2301 } 2617 }
2302 2618
2303#if EV_MINIMAL < 2 2619#if EV_FEATURE_API
2304 ++loop_count; 2620 ++loop_count;
2305#endif 2621#endif
2306 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 2622 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2307 backend_poll (EV_A_ waittime); 2623 backend_poll (EV_A_ waittime);
2308 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 2624 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2625
2626 pipe_write_wanted = 0;
2627
2628 if (pipe_write_skipped)
2629 {
2630 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2631 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2632 }
2633
2309 2634
2310 /* update ev_rt_now, do magic */ 2635 /* update ev_rt_now, do magic */
2311 time_update (EV_A_ waittime + sleeptime); 2636 time_update (EV_A_ waittime + sleeptime);
2312 } 2637 }
2313 2638
… …
2320#if EV_IDLE_ENABLE 2645#if EV_IDLE_ENABLE
2321 /* queue idle watchers unless other events are pending */ 2646 /* queue idle watchers unless other events are pending */
2322 idle_reify (EV_A); 2647 idle_reify (EV_A);
2323#endif 2648#endif
2324 2649
2650#if EV_CHECK_ENABLE
2325 /* queue check watchers, to be executed first */ 2651 /* queue check watchers, to be executed first */
2326 if (expect_false (checkcnt)) 2652 if (expect_false (checkcnt))
2327 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2653 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2654#endif
2328 2655
2329 EV_INVOKE_PENDING; 2656 EV_INVOKE_PENDING;
2330 } 2657 }
2331 while (expect_true ( 2658 while (expect_true (
2332 activecnt 2659 activecnt
2333 && !loop_done 2660 && !loop_done
2334 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2661 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2335 )); 2662 ));
2336 2663
2337 if (loop_done == EVUNLOOP_ONE) 2664 if (loop_done == EVBREAK_ONE)
2338 loop_done = EVUNLOOP_CANCEL; 2665 loop_done = EVBREAK_CANCEL;
2339 2666
2340#if EV_MINIMAL < 2 2667#if EV_FEATURE_API
2341 --loop_depth; 2668 --loop_depth;
2342#endif 2669#endif
2343} 2670}
2344 2671
2345void 2672void
2346ev_unloop (EV_P_ int how) 2673ev_break (EV_P_ int how)
2347{ 2674{
2348 loop_done = how; 2675 loop_done = how;
2349} 2676}
2350 2677
2351void 2678void
… …
2471 2798
2472 if (expect_false (ev_is_active (w))) 2799 if (expect_false (ev_is_active (w)))
2473 return; 2800 return;
2474 2801
2475 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2802 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2476 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2803 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2477 2804
2478 EV_FREQUENT_CHECK; 2805 EV_FREQUENT_CHECK;
2479 2806
2480 ev_start (EV_A_ (W)w, 1); 2807 ev_start (EV_A_ (W)w, 1);
2481 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2808 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2499 EV_FREQUENT_CHECK; 2826 EV_FREQUENT_CHECK;
2500 2827
2501 wlist_del (&anfds[w->fd].head, (WL)w); 2828 wlist_del (&anfds[w->fd].head, (WL)w);
2502 ev_stop (EV_A_ (W)w); 2829 ev_stop (EV_A_ (W)w);
2503 2830
2504 fd_change (EV_A_ w->fd, 1); 2831 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2505 2832
2506 EV_FREQUENT_CHECK; 2833 EV_FREQUENT_CHECK;
2507} 2834}
2508 2835
2509void noinline 2836void noinline
… …
2551 timers [active] = timers [timercnt + HEAP0]; 2878 timers [active] = timers [timercnt + HEAP0];
2552 adjustheap (timers, timercnt, active); 2879 adjustheap (timers, timercnt, active);
2553 } 2880 }
2554 } 2881 }
2555 2882
2556 EV_FREQUENT_CHECK;
2557
2558 ev_at (w) -= mn_now; 2883 ev_at (w) -= mn_now;
2559 2884
2560 ev_stop (EV_A_ (W)w); 2885 ev_stop (EV_A_ (W)w);
2886
2887 EV_FREQUENT_CHECK;
2561} 2888}
2562 2889
2563void noinline 2890void noinline
2564ev_timer_again (EV_P_ ev_timer *w) 2891ev_timer_again (EV_P_ ev_timer *w)
2565{ 2892{
… …
2601 if (w->reschedule_cb) 2928 if (w->reschedule_cb)
2602 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2929 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2603 else if (w->interval) 2930 else if (w->interval)
2604 { 2931 {
2605 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2932 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2606 /* this formula differs from the one in periodic_reify because we do not always round up */ 2933 periodic_recalc (EV_A_ w);
2607 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2608 } 2934 }
2609 else 2935 else
2610 ev_at (w) = w->offset; 2936 ev_at (w) = w->offset;
2611 2937
2612 EV_FREQUENT_CHECK; 2938 EV_FREQUENT_CHECK;
… …
2644 periodics [active] = periodics [periodiccnt + HEAP0]; 2970 periodics [active] = periodics [periodiccnt + HEAP0];
2645 adjustheap (periodics, periodiccnt, active); 2971 adjustheap (periodics, periodiccnt, active);
2646 } 2972 }
2647 } 2973 }
2648 2974
2649 EV_FREQUENT_CHECK;
2650
2651 ev_stop (EV_A_ (W)w); 2975 ev_stop (EV_A_ (W)w);
2976
2977 EV_FREQUENT_CHECK;
2652} 2978}
2653 2979
2654void noinline 2980void noinline
2655ev_periodic_again (EV_P_ ev_periodic *w) 2981ev_periodic_again (EV_P_ ev_periodic *w)
2656{ 2982{
… …
2662 2988
2663#ifndef SA_RESTART 2989#ifndef SA_RESTART
2664# define SA_RESTART 0 2990# define SA_RESTART 0
2665#endif 2991#endif
2666 2992
2993#if EV_SIGNAL_ENABLE
2994
2667void noinline 2995void noinline
2668ev_signal_start (EV_P_ ev_signal *w) 2996ev_signal_start (EV_P_ ev_signal *w)
2669{ 2997{
2670 if (expect_false (ev_is_active (w))) 2998 if (expect_false (ev_is_active (w)))
2671 return; 2999 return;
2672 3000
2673 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3001 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2674 3002
2675#if EV_MULTIPLICITY 3003#if EV_MULTIPLICITY
2676 assert (("libev: tried to attach to a signal from two different loops", 3004 assert (("libev: a signal must not be attached to two different loops",
2677 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3005 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2678 3006
2679 signals [w->signum - 1].loop = EV_A; 3007 signals [w->signum - 1].loop = EV_A;
2680#endif 3008#endif
2681 3009
… …
2717 if (!((WL)w)->next) 3045 if (!((WL)w)->next)
2718# if EV_USE_SIGNALFD 3046# if EV_USE_SIGNALFD
2719 if (sigfd < 0) /*TODO*/ 3047 if (sigfd < 0) /*TODO*/
2720# endif 3048# endif
2721 { 3049 {
2722# if _WIN32 3050# ifdef _WIN32
3051 evpipe_init (EV_A);
3052
2723 signal (w->signum, ev_sighandler); 3053 signal (w->signum, ev_sighandler);
2724# else 3054# else
2725 struct sigaction sa; 3055 struct sigaction sa;
2726 3056
2727 evpipe_init (EV_A); 3057 evpipe_init (EV_A);
… …
2729 sa.sa_handler = ev_sighandler; 3059 sa.sa_handler = ev_sighandler;
2730 sigfillset (&sa.sa_mask); 3060 sigfillset (&sa.sa_mask);
2731 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3061 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2732 sigaction (w->signum, &sa, 0); 3062 sigaction (w->signum, &sa, 0);
2733 3063
3064 if (origflags & EVFLAG_NOSIGMASK)
3065 {
2734 sigemptyset (&sa.sa_mask); 3066 sigemptyset (&sa.sa_mask);
2735 sigaddset (&sa.sa_mask, w->signum); 3067 sigaddset (&sa.sa_mask, w->signum);
2736 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3068 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3069 }
2737#endif 3070#endif
2738 } 3071 }
2739 3072
2740 EV_FREQUENT_CHECK; 3073 EV_FREQUENT_CHECK;
2741} 3074}
… …
2758 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3091 signals [w->signum - 1].loop = 0; /* unattach from signal */
2759#endif 3092#endif
2760#if EV_USE_SIGNALFD 3093#if EV_USE_SIGNALFD
2761 if (sigfd >= 0) 3094 if (sigfd >= 0)
2762 { 3095 {
2763 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3096 sigset_t ss;
3097
3098 sigemptyset (&ss);
3099 sigaddset (&ss, w->signum);
2764 sigdelset (&sigfd_set, w->signum); 3100 sigdelset (&sigfd_set, w->signum);
3101
2765 signalfd (sigfd, &sigfd_set, 0); 3102 signalfd (sigfd, &sigfd_set, 0);
2766 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3103 sigprocmask (SIG_UNBLOCK, &ss, 0);
2767 /*TODO: maybe unblock signal? */
2768 } 3104 }
2769 else 3105 else
2770#endif 3106#endif
2771 signal (w->signum, SIG_DFL); 3107 signal (w->signum, SIG_DFL);
2772 } 3108 }
2773 3109
2774 EV_FREQUENT_CHECK; 3110 EV_FREQUENT_CHECK;
2775} 3111}
2776 3112
3113#endif
3114
3115#if EV_CHILD_ENABLE
3116
2777void 3117void
2778ev_child_start (EV_P_ ev_child *w) 3118ev_child_start (EV_P_ ev_child *w)
2779{ 3119{
2780#if EV_MULTIPLICITY 3120#if EV_MULTIPLICITY
2781 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3121 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
… …
2784 return; 3124 return;
2785 3125
2786 EV_FREQUENT_CHECK; 3126 EV_FREQUENT_CHECK;
2787 3127
2788 ev_start (EV_A_ (W)w, 1); 3128 ev_start (EV_A_ (W)w, 1);
2789 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3129 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2790 3130
2791 EV_FREQUENT_CHECK; 3131 EV_FREQUENT_CHECK;
2792} 3132}
2793 3133
2794void 3134void
… …
2798 if (expect_false (!ev_is_active (w))) 3138 if (expect_false (!ev_is_active (w)))
2799 return; 3139 return;
2800 3140
2801 EV_FREQUENT_CHECK; 3141 EV_FREQUENT_CHECK;
2802 3142
2803 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3143 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2804 ev_stop (EV_A_ (W)w); 3144 ev_stop (EV_A_ (W)w);
2805 3145
2806 EV_FREQUENT_CHECK; 3146 EV_FREQUENT_CHECK;
2807} 3147}
3148
3149#endif
2808 3150
2809#if EV_STAT_ENABLE 3151#if EV_STAT_ENABLE
2810 3152
2811# ifdef _WIN32 3153# ifdef _WIN32
2812# undef lstat 3154# undef lstat
… …
2818#define MIN_STAT_INTERVAL 0.1074891 3160#define MIN_STAT_INTERVAL 0.1074891
2819 3161
2820static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3162static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2821 3163
2822#if EV_USE_INOTIFY 3164#if EV_USE_INOTIFY
2823# define EV_INOTIFY_BUFSIZE 8192 3165
3166/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3167# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2824 3168
2825static void noinline 3169static void noinline
2826infy_add (EV_P_ ev_stat *w) 3170infy_add (EV_P_ ev_stat *w)
2827{ 3171{
2828 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3172 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);
2829 3173
2830 if (w->wd < 0) 3174 if (w->wd >= 0)
3175 {
3176 struct statfs sfs;
3177
3178 /* now local changes will be tracked by inotify, but remote changes won't */
3179 /* unless the filesystem is known to be local, we therefore still poll */
3180 /* also do poll on <2.6.25, but with normal frequency */
3181
3182 if (!fs_2625)
3183 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3184 else if (!statfs (w->path, &sfs)
3185 && (sfs.f_type == 0x1373 /* devfs */
3186 || sfs.f_type == 0xEF53 /* ext2/3 */
3187 || sfs.f_type == 0x3153464a /* jfs */
3188 || sfs.f_type == 0x52654973 /* reiser3 */
3189 || sfs.f_type == 0x01021994 /* tempfs */
3190 || sfs.f_type == 0x58465342 /* xfs */))
3191 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3192 else
3193 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2831 { 3194 }
3195 else
3196 {
3197 /* can't use inotify, continue to stat */
2832 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3198 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2833 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2834 3199
2835 /* monitor some parent directory for speedup hints */ 3200 /* if path is not there, monitor some parent directory for speedup hints */
2836 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3201 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2837 /* but an efficiency issue only */ 3202 /* but an efficiency issue only */
2838 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3203 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2839 { 3204 {
2840 char path [4096]; 3205 char path [4096];
… …
2850 if (!pend || pend == path) 3215 if (!pend || pend == path)
2851 break; 3216 break;
2852 3217
2853 *pend = 0; 3218 *pend = 0;
2854 w->wd = inotify_add_watch (fs_fd, path, mask); 3219 w->wd = inotify_add_watch (fs_fd, path, mask);
2855 } 3220 }
2856 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3221 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2857 } 3222 }
2858 } 3223 }
2859 3224
2860 if (w->wd >= 0) 3225 if (w->wd >= 0)
2861 {
2862 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3226 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2863 3227
2864 /* now local changes will be tracked by inotify, but remote changes won't */ 3228 /* now re-arm timer, if required */
2865 /* unless the filesystem it known to be local, we therefore still poll */ 3229 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2866 /* also do poll on <2.6.25, but with normal frequency */
2867 struct statfs sfs;
2868
2869 if (fs_2625 && !statfs (w->path, &sfs))
2870 if (sfs.f_type == 0x1373 /* devfs */
2871 || sfs.f_type == 0xEF53 /* ext2/3 */
2872 || sfs.f_type == 0x3153464a /* jfs */
2873 || sfs.f_type == 0x52654973 /* reiser3 */
2874 || sfs.f_type == 0x01021994 /* tempfs */
2875 || sfs.f_type == 0x58465342 /* xfs */)
2876 return;
2877
2878 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2879 ev_timer_again (EV_A_ &w->timer); 3230 ev_timer_again (EV_A_ &w->timer);
2880 } 3231 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2881} 3232}
2882 3233
2883static void noinline 3234static void noinline
2884infy_del (EV_P_ ev_stat *w) 3235infy_del (EV_P_ ev_stat *w)
2885{ 3236{
… …
2888 3239
2889 if (wd < 0) 3240 if (wd < 0)
2890 return; 3241 return;
2891 3242
2892 w->wd = -2; 3243 w->wd = -2;
2893 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3244 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2894 wlist_del (&fs_hash [slot].head, (WL)w); 3245 wlist_del (&fs_hash [slot].head, (WL)w);
2895 3246
2896 /* remove this watcher, if others are watching it, they will rearm */ 3247 /* remove this watcher, if others are watching it, they will rearm */
2897 inotify_rm_watch (fs_fd, wd); 3248 inotify_rm_watch (fs_fd, wd);
2898} 3249}
… …
2900static void noinline 3251static void noinline
2901infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3252infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2902{ 3253{
2903 if (slot < 0) 3254 if (slot < 0)
2904 /* overflow, need to check for all hash slots */ 3255 /* overflow, need to check for all hash slots */
2905 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3256 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2906 infy_wd (EV_A_ slot, wd, ev); 3257 infy_wd (EV_A_ slot, wd, ev);
2907 else 3258 else
2908 { 3259 {
2909 WL w_; 3260 WL w_;
2910 3261
2911 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3262 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2912 { 3263 {
2913 ev_stat *w = (ev_stat *)w_; 3264 ev_stat *w = (ev_stat *)w_;
2914 w_ = w_->next; /* lets us remove this watcher and all before it */ 3265 w_ = w_->next; /* lets us remove this watcher and all before it */
2915 3266
2916 if (w->wd == wd || wd == -1) 3267 if (w->wd == wd || wd == -1)
2917 { 3268 {
2918 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3269 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2919 { 3270 {
2920 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3271 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2921 w->wd = -1; 3272 w->wd = -1;
2922 infy_add (EV_A_ w); /* re-add, no matter what */ 3273 infy_add (EV_A_ w); /* re-add, no matter what */
2923 } 3274 }
2924 3275
2925 stat_timer_cb (EV_A_ &w->timer, 0); 3276 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2930 3281
2931static void 3282static void
2932infy_cb (EV_P_ ev_io *w, int revents) 3283infy_cb (EV_P_ ev_io *w, int revents)
2933{ 3284{
2934 char buf [EV_INOTIFY_BUFSIZE]; 3285 char buf [EV_INOTIFY_BUFSIZE];
2935 struct inotify_event *ev = (struct inotify_event *)buf;
2936 int ofs; 3286 int ofs;
2937 int len = read (fs_fd, buf, sizeof (buf)); 3287 int len = read (fs_fd, buf, sizeof (buf));
2938 3288
2939 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3289 for (ofs = 0; ofs < len; )
3290 {
3291 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2940 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3292 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3293 ofs += sizeof (struct inotify_event) + ev->len;
3294 }
2941} 3295}
2942 3296
2943inline_size void 3297inline_size void ecb_cold
2944check_2625 (EV_P) 3298ev_check_2625 (EV_P)
2945{ 3299{
2946 /* kernels < 2.6.25 are borked 3300 /* kernels < 2.6.25 are borked
2947 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3301 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2948 */ 3302 */
2949 struct utsname buf; 3303 if (ev_linux_version () < 0x020619)
2950 int major, minor, micro;
2951
2952 if (uname (&buf))
2953 return; 3304 return;
2954 3305
2955 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2956 return;
2957
2958 if (major < 2
2959 || (major == 2 && minor < 6)
2960 || (major == 2 && minor == 6 && micro < 25))
2961 return;
2962
2963 fs_2625 = 1; 3306 fs_2625 = 1;
3307}
3308
3309inline_size int
3310infy_newfd (void)
3311{
3312#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3313 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3314 if (fd >= 0)
3315 return fd;
3316#endif
3317 return inotify_init ();
2964} 3318}
2965 3319
2966inline_size void 3320inline_size void
2967infy_init (EV_P) 3321infy_init (EV_P)
2968{ 3322{
2969 if (fs_fd != -2) 3323 if (fs_fd != -2)
2970 return; 3324 return;
2971 3325
2972 fs_fd = -1; 3326 fs_fd = -1;
2973 3327
2974 check_2625 (EV_A); 3328 ev_check_2625 (EV_A);
2975 3329
2976 fs_fd = inotify_init (); 3330 fs_fd = infy_newfd ();
2977 3331
2978 if (fs_fd >= 0) 3332 if (fs_fd >= 0)
2979 { 3333 {
3334 fd_intern (fs_fd);
2980 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3335 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2981 ev_set_priority (&fs_w, EV_MAXPRI); 3336 ev_set_priority (&fs_w, EV_MAXPRI);
2982 ev_io_start (EV_A_ &fs_w); 3337 ev_io_start (EV_A_ &fs_w);
3338 ev_unref (EV_A);
2983 } 3339 }
2984} 3340}
2985 3341
2986inline_size void 3342inline_size void
2987infy_fork (EV_P) 3343infy_fork (EV_P)
… …
2989 int slot; 3345 int slot;
2990 3346
2991 if (fs_fd < 0) 3347 if (fs_fd < 0)
2992 return; 3348 return;
2993 3349
3350 ev_ref (EV_A);
3351 ev_io_stop (EV_A_ &fs_w);
2994 close (fs_fd); 3352 close (fs_fd);
2995 fs_fd = inotify_init (); 3353 fs_fd = infy_newfd ();
2996 3354
3355 if (fs_fd >= 0)
3356 {
3357 fd_intern (fs_fd);
3358 ev_io_set (&fs_w, fs_fd, EV_READ);
3359 ev_io_start (EV_A_ &fs_w);
3360 ev_unref (EV_A);
3361 }
3362
2997 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3363 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2998 { 3364 {
2999 WL w_ = fs_hash [slot].head; 3365 WL w_ = fs_hash [slot].head;
3000 fs_hash [slot].head = 0; 3366 fs_hash [slot].head = 0;
3001 3367
3002 while (w_) 3368 while (w_)
… …
3007 w->wd = -1; 3373 w->wd = -1;
3008 3374
3009 if (fs_fd >= 0) 3375 if (fs_fd >= 0)
3010 infy_add (EV_A_ w); /* re-add, no matter what */ 3376 infy_add (EV_A_ w); /* re-add, no matter what */
3011 else 3377 else
3378 {
3379 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3380 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3012 ev_timer_again (EV_A_ &w->timer); 3381 ev_timer_again (EV_A_ &w->timer);
3382 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3383 }
3013 } 3384 }
3014 } 3385 }
3015} 3386}
3016 3387
3017#endif 3388#endif
… …
3034static void noinline 3405static void noinline
3035stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3406stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3036{ 3407{
3037 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3408 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3038 3409
3039 /* we copy this here each the time so that */ 3410 ev_statdata prev = w->attr;
3040 /* prev has the old value when the callback gets invoked */
3041 w->prev = w->attr;
3042 ev_stat_stat (EV_A_ w); 3411 ev_stat_stat (EV_A_ w);
3043 3412
3044 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3413 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3045 if ( 3414 if (
3046 w->prev.st_dev != w->attr.st_dev 3415 prev.st_dev != w->attr.st_dev
3047 || w->prev.st_ino != w->attr.st_ino 3416 || prev.st_ino != w->attr.st_ino
3048 || w->prev.st_mode != w->attr.st_mode 3417 || prev.st_mode != w->attr.st_mode
3049 || w->prev.st_nlink != w->attr.st_nlink 3418 || prev.st_nlink != w->attr.st_nlink
3050 || w->prev.st_uid != w->attr.st_uid 3419 || prev.st_uid != w->attr.st_uid
3051 || w->prev.st_gid != w->attr.st_gid 3420 || prev.st_gid != w->attr.st_gid
3052 || w->prev.st_rdev != w->attr.st_rdev 3421 || prev.st_rdev != w->attr.st_rdev
3053 || w->prev.st_size != w->attr.st_size 3422 || prev.st_size != w->attr.st_size
3054 || w->prev.st_atime != w->attr.st_atime 3423 || prev.st_atime != w->attr.st_atime
3055 || w->prev.st_mtime != w->attr.st_mtime 3424 || prev.st_mtime != w->attr.st_mtime
3056 || w->prev.st_ctime != w->attr.st_ctime 3425 || prev.st_ctime != w->attr.st_ctime
3057 ) { 3426 ) {
3427 /* we only update w->prev on actual differences */
3428 /* in case we test more often than invoke the callback, */
3429 /* to ensure that prev is always different to attr */
3430 w->prev = prev;
3431
3058 #if EV_USE_INOTIFY 3432 #if EV_USE_INOTIFY
3059 if (fs_fd >= 0) 3433 if (fs_fd >= 0)
3060 { 3434 {
3061 infy_del (EV_A_ w); 3435 infy_del (EV_A_ w);
3062 infy_add (EV_A_ w); 3436 infy_add (EV_A_ w);
… …
3087 3461
3088 if (fs_fd >= 0) 3462 if (fs_fd >= 0)
3089 infy_add (EV_A_ w); 3463 infy_add (EV_A_ w);
3090 else 3464 else
3091#endif 3465#endif
3466 {
3092 ev_timer_again (EV_A_ &w->timer); 3467 ev_timer_again (EV_A_ &w->timer);
3468 ev_unref (EV_A);
3469 }
3093 3470
3094 ev_start (EV_A_ (W)w, 1); 3471 ev_start (EV_A_ (W)w, 1);
3095 3472
3096 EV_FREQUENT_CHECK; 3473 EV_FREQUENT_CHECK;
3097} 3474}
… …
3106 EV_FREQUENT_CHECK; 3483 EV_FREQUENT_CHECK;
3107 3484
3108#if EV_USE_INOTIFY 3485#if EV_USE_INOTIFY
3109 infy_del (EV_A_ w); 3486 infy_del (EV_A_ w);
3110#endif 3487#endif
3488
3489 if (ev_is_active (&w->timer))
3490 {
3491 ev_ref (EV_A);
3111 ev_timer_stop (EV_A_ &w->timer); 3492 ev_timer_stop (EV_A_ &w->timer);
3493 }
3112 3494
3113 ev_stop (EV_A_ (W)w); 3495 ev_stop (EV_A_ (W)w);
3114 3496
3115 EV_FREQUENT_CHECK; 3497 EV_FREQUENT_CHECK;
3116} 3498}
… …
3161 3543
3162 EV_FREQUENT_CHECK; 3544 EV_FREQUENT_CHECK;
3163} 3545}
3164#endif 3546#endif
3165 3547
3548#if EV_PREPARE_ENABLE
3166void 3549void
3167ev_prepare_start (EV_P_ ev_prepare *w) 3550ev_prepare_start (EV_P_ ev_prepare *w)
3168{ 3551{
3169 if (expect_false (ev_is_active (w))) 3552 if (expect_false (ev_is_active (w)))
3170 return; 3553 return;
… …
3196 3579
3197 ev_stop (EV_A_ (W)w); 3580 ev_stop (EV_A_ (W)w);
3198 3581
3199 EV_FREQUENT_CHECK; 3582 EV_FREQUENT_CHECK;
3200} 3583}
3584#endif
3201 3585
3586#if EV_CHECK_ENABLE
3202void 3587void
3203ev_check_start (EV_P_ ev_check *w) 3588ev_check_start (EV_P_ ev_check *w)
3204{ 3589{
3205 if (expect_false (ev_is_active (w))) 3590 if (expect_false (ev_is_active (w)))
3206 return; 3591 return;
… …
3232 3617
3233 ev_stop (EV_A_ (W)w); 3618 ev_stop (EV_A_ (W)w);
3234 3619
3235 EV_FREQUENT_CHECK; 3620 EV_FREQUENT_CHECK;
3236} 3621}
3622#endif
3237 3623
3238#if EV_EMBED_ENABLE 3624#if EV_EMBED_ENABLE
3239void noinline 3625void noinline
3240ev_embed_sweep (EV_P_ ev_embed *w) 3626ev_embed_sweep (EV_P_ ev_embed *w)
3241{ 3627{
3242 ev_loop (w->other, EVLOOP_NONBLOCK); 3628 ev_run (w->other, EVRUN_NOWAIT);
3243} 3629}
3244 3630
3245static void 3631static void
3246embed_io_cb (EV_P_ ev_io *io, int revents) 3632embed_io_cb (EV_P_ ev_io *io, int revents)
3247{ 3633{
3248 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3634 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3249 3635
3250 if (ev_cb (w)) 3636 if (ev_cb (w))
3251 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3637 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3252 else 3638 else
3253 ev_loop (w->other, EVLOOP_NONBLOCK); 3639 ev_run (w->other, EVRUN_NOWAIT);
3254} 3640}
3255 3641
3256static void 3642static void
3257embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3643embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3258{ 3644{
… …
3262 EV_P = w->other; 3648 EV_P = w->other;
3263 3649
3264 while (fdchangecnt) 3650 while (fdchangecnt)
3265 { 3651 {
3266 fd_reify (EV_A); 3652 fd_reify (EV_A);
3267 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3653 ev_run (EV_A_ EVRUN_NOWAIT);
3268 } 3654 }
3269 } 3655 }
3270} 3656}
3271 3657
3272static void 3658static void
… …
3278 3664
3279 { 3665 {
3280 EV_P = w->other; 3666 EV_P = w->other;
3281 3667
3282 ev_loop_fork (EV_A); 3668 ev_loop_fork (EV_A);
3283 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3669 ev_run (EV_A_ EVRUN_NOWAIT);
3284 } 3670 }
3285 3671
3286 ev_embed_start (EV_A_ w); 3672 ev_embed_start (EV_A_ w);
3287} 3673}
3288 3674
… …
3336 3722
3337 ev_io_stop (EV_A_ &w->io); 3723 ev_io_stop (EV_A_ &w->io);
3338 ev_prepare_stop (EV_A_ &w->prepare); 3724 ev_prepare_stop (EV_A_ &w->prepare);
3339 ev_fork_stop (EV_A_ &w->fork); 3725 ev_fork_stop (EV_A_ &w->fork);
3340 3726
3727 ev_stop (EV_A_ (W)w);
3728
3341 EV_FREQUENT_CHECK; 3729 EV_FREQUENT_CHECK;
3342} 3730}
3343#endif 3731#endif
3344 3732
3345#if EV_FORK_ENABLE 3733#if EV_FORK_ENABLE
… …
3378 3766
3379 EV_FREQUENT_CHECK; 3767 EV_FREQUENT_CHECK;
3380} 3768}
3381#endif 3769#endif
3382 3770
3771#if EV_CLEANUP_ENABLE
3772void
3773ev_cleanup_start (EV_P_ ev_cleanup *w)
3774{
3775 if (expect_false (ev_is_active (w)))
3776 return;
3777
3778 EV_FREQUENT_CHECK;
3779
3780 ev_start (EV_A_ (W)w, ++cleanupcnt);
3781 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3782 cleanups [cleanupcnt - 1] = w;
3783
3784 /* cleanup watchers should never keep a refcount on the loop */
3785 ev_unref (EV_A);
3786 EV_FREQUENT_CHECK;
3787}
3788
3789void
3790ev_cleanup_stop (EV_P_ ev_cleanup *w)
3791{
3792 clear_pending (EV_A_ (W)w);
3793 if (expect_false (!ev_is_active (w)))
3794 return;
3795
3796 EV_FREQUENT_CHECK;
3797 ev_ref (EV_A);
3798
3799 {
3800 int active = ev_active (w);
3801
3802 cleanups [active - 1] = cleanups [--cleanupcnt];
3803 ev_active (cleanups [active - 1]) = active;
3804 }
3805
3806 ev_stop (EV_A_ (W)w);
3807
3808 EV_FREQUENT_CHECK;
3809}
3810#endif
3811
3383#if EV_ASYNC_ENABLE 3812#if EV_ASYNC_ENABLE
3384void 3813void
3385ev_async_start (EV_P_ ev_async *w) 3814ev_async_start (EV_P_ ev_async *w)
3386{ 3815{
3387 if (expect_false (ev_is_active (w))) 3816 if (expect_false (ev_is_active (w)))
3388 return; 3817 return;
3818
3819 w->sent = 0;
3389 3820
3390 evpipe_init (EV_A); 3821 evpipe_init (EV_A);
3391 3822
3392 EV_FREQUENT_CHECK; 3823 EV_FREQUENT_CHECK;
3393 3824
… …
3471{ 3902{
3472 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3903 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3473 3904
3474 if (expect_false (!once)) 3905 if (expect_false (!once))
3475 { 3906 {
3476 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3907 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3477 return; 3908 return;
3478 } 3909 }
3479 3910
3480 once->cb = cb; 3911 once->cb = cb;
3481 once->arg = arg; 3912 once->arg = arg;
… …
3496} 3927}
3497 3928
3498/*****************************************************************************/ 3929/*****************************************************************************/
3499 3930
3500#if EV_WALK_ENABLE 3931#if EV_WALK_ENABLE
3501void 3932void ecb_cold
3502ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 3933ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3503{ 3934{
3504 int i, j; 3935 int i, j;
3505 ev_watcher_list *wl, *wn; 3936 ev_watcher_list *wl, *wn;
3506 3937
… …
3568 if (types & EV_ASYNC) 3999 if (types & EV_ASYNC)
3569 for (i = asynccnt; i--; ) 4000 for (i = asynccnt; i--; )
3570 cb (EV_A_ EV_ASYNC, asyncs [i]); 4001 cb (EV_A_ EV_ASYNC, asyncs [i]);
3571#endif 4002#endif
3572 4003
4004#if EV_PREPARE_ENABLE
3573 if (types & EV_PREPARE) 4005 if (types & EV_PREPARE)
3574 for (i = preparecnt; i--; ) 4006 for (i = preparecnt; i--; )
3575#if EV_EMBED_ENABLE 4007# if EV_EMBED_ENABLE
3576 if (ev_cb (prepares [i]) != embed_prepare_cb) 4008 if (ev_cb (prepares [i]) != embed_prepare_cb)
3577#endif 4009# endif
3578 cb (EV_A_ EV_PREPARE, prepares [i]); 4010 cb (EV_A_ EV_PREPARE, prepares [i]);
4011#endif
3579 4012
4013#if EV_CHECK_ENABLE
3580 if (types & EV_CHECK) 4014 if (types & EV_CHECK)
3581 for (i = checkcnt; i--; ) 4015 for (i = checkcnt; i--; )
3582 cb (EV_A_ EV_CHECK, checks [i]); 4016 cb (EV_A_ EV_CHECK, checks [i]);
4017#endif
3583 4018
4019#if EV_SIGNAL_ENABLE
3584 if (types & EV_SIGNAL) 4020 if (types & EV_SIGNAL)
3585 for (i = 0; i < EV_NSIG - 1; ++i) 4021 for (i = 0; i < EV_NSIG - 1; ++i)
3586 for (wl = signals [i].head; wl; ) 4022 for (wl = signals [i].head; wl; )
3587 { 4023 {
3588 wn = wl->next; 4024 wn = wl->next;
3589 cb (EV_A_ EV_SIGNAL, wl); 4025 cb (EV_A_ EV_SIGNAL, wl);
3590 wl = wn; 4026 wl = wn;
3591 } 4027 }
4028#endif
3592 4029
4030#if EV_CHILD_ENABLE
3593 if (types & EV_CHILD) 4031 if (types & EV_CHILD)
3594 for (i = EV_PID_HASHSIZE; i--; ) 4032 for (i = (EV_PID_HASHSIZE); i--; )
3595 for (wl = childs [i]; wl; ) 4033 for (wl = childs [i]; wl; )
3596 { 4034 {
3597 wn = wl->next; 4035 wn = wl->next;
3598 cb (EV_A_ EV_CHILD, wl); 4036 cb (EV_A_ EV_CHILD, wl);
3599 wl = wn; 4037 wl = wn;
3600 } 4038 }
4039#endif
3601/* EV_STAT 0x00001000 /* stat data changed */ 4040/* EV_STAT 0x00001000 /* stat data changed */
3602/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4041/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3603} 4042}
3604#endif 4043#endif
3605 4044
3606#if EV_MULTIPLICITY 4045#if EV_MULTIPLICITY
3607 #include "ev_wrap.h" 4046 #include "ev_wrap.h"
3608#endif 4047#endif
3609 4048
3610#ifdef __cplusplus 4049EV_CPP(})
3611}
3612#endif
3613 4050

Diff Legend

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