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Comparing libev/ev.c (file contents):
Revision 1.313 by root, Wed Aug 19 23:44:51 2009 UTC vs.
Revision 1.382 by sf-exg, Thu Jun 30 13:13:59 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
… …
392# define EFD_CLOEXEC O_CLOEXEC 418# define EFD_CLOEXEC O_CLOEXEC
393# else 419# else
394# define EFD_CLOEXEC 02000000 420# define EFD_CLOEXEC 02000000
395# endif 421# endif
396# endif 422# endif
397# ifdef __cplusplus 423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
398extern "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
399# endif 431# endif
400int eventfd (unsigned int initval, int flags); 432# ifndef SFD_CLOEXEC
401# ifdef __cplusplus 433# ifdef O_CLOEXEC
402} 434# define SFD_CLOEXEC O_CLOEXEC
435# else
436# define SFD_CLOEXEC 02000000
437# endif
403# endif 438# endif
404#endif 439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
405 440
406#if EV_USE_SIGNALFD 441struct signalfd_siginfo
407# include <sys/signalfd.h> 442{
443 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)];
445};
408#endif 446#endif
409 447
410/**/ 448/**/
411 449
412#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
413# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
414#else 452#else
415# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
416#endif 454#endif
417 455
418/* 456/*
419 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
420 * It is added to ev_rt_now when scheduling periodics
421 * to ensure progress, time-wise, even when rounding
422 * errors are against us.
423 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
424 * Better solutions welcome.
425 */ 459 */
426#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 */
427 462
428#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) */
429#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) */
430/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
431 465
432#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)
433# 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)
434# 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
435#else 493#else
436# define expect(expr,value) (expr) 494 #define ecb_inline static
437# define noinline
438# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
439# define inline
440# endif 495#endif
441#endif
442 496
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. */
443#define expect_false(expr) expect ((expr) != 0, 0) 528#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
444#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
445#define inline_size static inline 536#define inline_size ecb_inline
446 537
447#if EV_MINIMAL 538#if EV_FEATURE_CODE
539# define inline_speed ecb_inline
540#else
448# define inline_speed static noinline 541# define inline_speed static noinline
449#else
450# define inline_speed static inline
451#endif 542#endif
452 543
453#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 544#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
454 545
455#if EV_MINPRI == EV_MAXPRI 546#if EV_MINPRI == EV_MAXPRI
… …
468#define ev_active(w) ((W)(w))->active 559#define ev_active(w) ((W)(w))->active
469#define ev_at(w) ((WT)(w))->at 560#define ev_at(w) ((WT)(w))->at
470 561
471#if EV_USE_REALTIME 562#if EV_USE_REALTIME
472/* 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 */
473/* giving it a reasonably high chance of working on typical architetcures */ 564/* giving it a reasonably high chance of working on typical architectures */
474static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 565static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
475#endif 566#endif
476 567
477#if EV_USE_MONOTONIC 568#if EV_USE_MONOTONIC
478static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 569static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
480 571
481#ifndef EV_FD_TO_WIN32_HANDLE 572#ifndef EV_FD_TO_WIN32_HANDLE
482# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) 573# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
483#endif 574#endif
484#ifndef EV_WIN32_HANDLE_TO_FD 575#ifndef EV_WIN32_HANDLE_TO_FD
485# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) 576# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
486#endif 577#endif
487#ifndef EV_WIN32_CLOSE_FD 578#ifndef EV_WIN32_CLOSE_FD
488# define EV_WIN32_CLOSE_FD(fd) close (fd) 579# define EV_WIN32_CLOSE_FD(fd) close (fd)
489#endif 580#endif
490 581
… …
492# include "ev_win32.c" 583# include "ev_win32.c"
493#endif 584#endif
494 585
495/*****************************************************************************/ 586/*****************************************************************************/
496 587
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
497static void (*syserr_cb)(const char *msg); 686static void (*syserr_cb)(const char *msg);
498 687
499void 688void ecb_cold
500ev_set_syserr_cb (void (*cb)(const char *msg)) 689ev_set_syserr_cb (void (*cb)(const char *msg))
501{ 690{
502 syserr_cb = cb; 691 syserr_cb = cb;
503} 692}
504 693
505static void noinline 694static void noinline ecb_cold
506ev_syserr (const char *msg) 695ev_syserr (const char *msg)
507{ 696{
508 if (!msg) 697 if (!msg)
509 msg = "(libev) system error"; 698 msg = "(libev) system error";
510 699
511 if (syserr_cb) 700 if (syserr_cb)
512 syserr_cb (msg); 701 syserr_cb (msg);
513 else 702 else
514 { 703 {
704#if EV_AVOID_STDIO
705 ev_printerr (msg);
706 ev_printerr (": ");
707 ev_printerr (strerror (errno));
708 ev_printerr ("\n");
709#else
515 perror (msg); 710 perror (msg);
711#endif
516 abort (); 712 abort ();
517 } 713 }
518} 714}
519 715
520static void * 716static void *
521ev_realloc_emul (void *ptr, long size) 717ev_realloc_emul (void *ptr, long size)
522{ 718{
719#if __GLIBC__
720 return realloc (ptr, size);
721#else
523 /* some systems, notably openbsd and darwin, fail to properly 722 /* some systems, notably openbsd and darwin, fail to properly
524 * 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
525 * the single unix specification, so work around them here. 724 * the single unix specification, so work around them here.
526 */ 725 */
527 726
528 if (size) 727 if (size)
529 return realloc (ptr, size); 728 return realloc (ptr, size);
530 729
531 free (ptr); 730 free (ptr);
532 return 0; 731 return 0;
732#endif
533} 733}
534 734
535static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 735static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
536 736
537void 737void ecb_cold
538ev_set_allocator (void *(*cb)(void *ptr, long size)) 738ev_set_allocator (void *(*cb)(void *ptr, long size))
539{ 739{
540 alloc = cb; 740 alloc = cb;
541} 741}
542 742
… …
545{ 745{
546 ptr = alloc (ptr, size); 746 ptr = alloc (ptr, size);
547 747
548 if (!ptr && size) 748 if (!ptr && size)
549 { 749 {
750#if EV_AVOID_STDIO
751 ev_printerr ("(libev) memory allocation failed, aborting.\n");
752#else
550 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 753 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
754#endif
551 abort (); 755 abort ();
552 } 756 }
553 757
554 return ptr; 758 return ptr;
555} 759}
… …
571 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 */
572 unsigned char unused; 776 unsigned char unused;
573#if EV_USE_EPOLL 777#if EV_USE_EPOLL
574 unsigned int egen; /* generation counter to counter epoll bugs */ 778 unsigned int egen; /* generation counter to counter epoll bugs */
575#endif 779#endif
576#if EV_SELECT_IS_WINSOCKET 780#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
577 SOCKET handle; 781 SOCKET handle;
782#endif
783#if EV_USE_IOCP
784 OVERLAPPED or, ow;
578#endif 785#endif
579} ANFD; 786} ANFD;
580 787
581/* stores the pending event set for a given watcher */ 788/* stores the pending event set for a given watcher */
582typedef struct 789typedef struct
… …
637 844
638 static int ev_default_loop_ptr; 845 static int ev_default_loop_ptr;
639 846
640#endif 847#endif
641 848
642#if EV_MINIMAL < 2 849#if EV_FEATURE_API
643# 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)
644# 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)
645# define EV_INVOKE_PENDING invoke_cb (EV_A) 852# define EV_INVOKE_PENDING invoke_cb (EV_A)
646#else 853#else
647# define EV_RELEASE_CB (void)0 854# define EV_RELEASE_CB (void)0
648# define EV_ACQUIRE_CB (void)0 855# define EV_ACQUIRE_CB (void)0
649# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 856# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
650#endif 857#endif
651 858
652#define EVUNLOOP_RECURSE 0x80 859#define EVBREAK_RECURSE 0x80
653 860
654/*****************************************************************************/ 861/*****************************************************************************/
655 862
656#ifndef EV_HAVE_EV_TIME 863#ifndef EV_HAVE_EV_TIME
657ev_tstamp 864ev_tstamp
… …
701 if (delay > 0.) 908 if (delay > 0.)
702 { 909 {
703#if EV_USE_NANOSLEEP 910#if EV_USE_NANOSLEEP
704 struct timespec ts; 911 struct timespec ts;
705 912
706 ts.tv_sec = (time_t)delay; 913 EV_TS_SET (ts, delay);
707 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
708
709 nanosleep (&ts, 0); 914 nanosleep (&ts, 0);
710#elif defined(_WIN32) 915#elif defined(_WIN32)
711 Sleep ((unsigned long)(delay * 1e3)); 916 Sleep ((unsigned long)(delay * 1e3));
712#else 917#else
713 struct timeval tv; 918 struct timeval tv;
714 919
715 tv.tv_sec = (time_t)delay;
716 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
717
718 /* 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 */
719 /* something not guaranteed by newer posix versions, but guaranteed */ 921 /* something not guaranteed by newer posix versions, but guaranteed */
720 /* by older ones */ 922 /* by older ones */
923 EV_TV_SET (tv, delay);
721 select (0, 0, 0, 0, &tv); 924 select (0, 0, 0, 0, &tv);
722#endif 925#endif
723 } 926 }
724} 927}
725 928
726/*****************************************************************************/ 929/*****************************************************************************/
727 930
728#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 */
729 932
730/* find a suitable new size for the given array, */ 933/* find a suitable new size for the given array, */
731/* hopefully by rounding to a ncie-to-malloc size */ 934/* hopefully by rounding to a nice-to-malloc size */
732inline_size int 935inline_size int
733array_nextsize (int elem, int cur, int cnt) 936array_nextsize (int elem, int cur, int cnt)
734{ 937{
735 int ncur = cur + 1; 938 int ncur = cur + 1;
736 939
… …
748 } 951 }
749 952
750 return ncur; 953 return ncur;
751} 954}
752 955
753static noinline void * 956static void * noinline ecb_cold
754array_realloc (int elem, void *base, int *cur, int cnt) 957array_realloc (int elem, void *base, int *cur, int cnt)
755{ 958{
756 *cur = array_nextsize (elem, *cur, cnt); 959 *cur = array_nextsize (elem, *cur, cnt);
757 return ev_realloc (base, elem * *cur); 960 return ev_realloc (base, elem * *cur);
758} 961}
… …
761 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 964 memset ((void *)(base), 0, sizeof (*(base)) * (count))
762 965
763#define array_needsize(type,base,cur,cnt,init) \ 966#define array_needsize(type,base,cur,cnt,init) \
764 if (expect_false ((cnt) > (cur))) \ 967 if (expect_false ((cnt) > (cur))) \
765 { \ 968 { \
766 int ocur_ = (cur); \ 969 int ecb_unused ocur_ = (cur); \
767 (base) = (type *)array_realloc \ 970 (base) = (type *)array_realloc \
768 (sizeof (type), (base), &(cur), (cnt)); \ 971 (sizeof (type), (base), &(cur), (cnt)); \
769 init ((base) + (ocur_), (cur) - ocur_); \ 972 init ((base) + (ocur_), (cur) - ocur_); \
770 } 973 }
771 974
… …
832} 1035}
833 1036
834/*****************************************************************************/ 1037/*****************************************************************************/
835 1038
836inline_speed void 1039inline_speed void
837fd_event_nc (EV_P_ int fd, int revents) 1040fd_event_nocheck (EV_P_ int fd, int revents)
838{ 1041{
839 ANFD *anfd = anfds + fd; 1042 ANFD *anfd = anfds + fd;
840 ev_io *w; 1043 ev_io *w;
841 1044
842 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)
… …
854fd_event (EV_P_ int fd, int revents) 1057fd_event (EV_P_ int fd, int revents)
855{ 1058{
856 ANFD *anfd = anfds + fd; 1059 ANFD *anfd = anfds + fd;
857 1060
858 if (expect_true (!anfd->reify)) 1061 if (expect_true (!anfd->reify))
859 fd_event_nc (EV_A_ fd, revents); 1062 fd_event_nocheck (EV_A_ fd, revents);
860} 1063}
861 1064
862void 1065void
863ev_feed_fd_event (EV_P_ int fd, int revents) 1066ev_feed_fd_event (EV_P_ int fd, int revents)
864{ 1067{
865 if (fd >= 0 && fd < anfdmax) 1068 if (fd >= 0 && fd < anfdmax)
866 fd_event_nc (EV_A_ fd, revents); 1069 fd_event_nocheck (EV_A_ fd, revents);
867} 1070}
868 1071
869/* make sure the external fd watch events are in-sync */ 1072/* make sure the external fd watch events are in-sync */
870/* with the kernel/libev internal state */ 1073/* with the kernel/libev internal state */
871inline_size void 1074inline_size void
872fd_reify (EV_P) 1075fd_reify (EV_P)
873{ 1076{
874 int i; 1077 int i;
875 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
876 for (i = 0; i < fdchangecnt; ++i) 1104 for (i = 0; i < fdchangecnt; ++i)
877 { 1105 {
878 int fd = fdchanges [i]; 1106 int fd = fdchanges [i];
879 ANFD *anfd = anfds + fd; 1107 ANFD *anfd = anfds + fd;
880 ev_io *w; 1108 ev_io *w;
881 1109
882 unsigned char events = 0; 1110 unsigned char o_events = anfd->events;
1111 unsigned char o_reify = anfd->reify;
883 1112
884 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1113 anfd->reify = 0;
885 events |= (unsigned char)w->events;
886 1114
887#if EV_SELECT_IS_WINSOCKET 1115 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
888 if (events)
889 { 1116 {
890 unsigned long arg; 1117 anfd->events = 0;
891 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1118
892 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1119 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1120 anfd->events |= (unsigned char)w->events;
1121
1122 if (o_events != anfd->events)
1123 o_reify = EV__IOFDSET; /* actually |= */
893 } 1124 }
894#endif
895 1125
896 { 1126 if (o_reify & EV__IOFDSET)
897 unsigned char o_events = anfd->events;
898 unsigned char o_reify = anfd->reify;
899
900 anfd->reify = 0;
901 anfd->events = events;
902
903 if (o_events != events || o_reify & EV__IOFDSET)
904 backend_modify (EV_A_ fd, o_events, events); 1127 backend_modify (EV_A_ fd, o_events, anfd->events);
905 }
906 } 1128 }
907 1129
908 fdchangecnt = 0; 1130 fdchangecnt = 0;
909} 1131}
910 1132
… …
922 fdchanges [fdchangecnt - 1] = fd; 1144 fdchanges [fdchangecnt - 1] = fd;
923 } 1145 }
924} 1146}
925 1147
926/* 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 */
927inline_speed void 1149inline_speed void ecb_cold
928fd_kill (EV_P_ int fd) 1150fd_kill (EV_P_ int fd)
929{ 1151{
930 ev_io *w; 1152 ev_io *w;
931 1153
932 while ((w = (ev_io *)anfds [fd].head)) 1154 while ((w = (ev_io *)anfds [fd].head))
… …
934 ev_io_stop (EV_A_ w); 1156 ev_io_stop (EV_A_ w);
935 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);
936 } 1158 }
937} 1159}
938 1160
939/* check whether the given fd is atcually valid, for error recovery */ 1161/* check whether the given fd is actually valid, for error recovery */
940inline_size int 1162inline_size int ecb_cold
941fd_valid (int fd) 1163fd_valid (int fd)
942{ 1164{
943#ifdef _WIN32 1165#ifdef _WIN32
944 return _get_osfhandle (fd) != -1; 1166 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
945#else 1167#else
946 return fcntl (fd, F_GETFD) != -1; 1168 return fcntl (fd, F_GETFD) != -1;
947#endif 1169#endif
948} 1170}
949 1171
950/* called on EBADF to verify fds */ 1172/* called on EBADF to verify fds */
951static void noinline 1173static void noinline ecb_cold
952fd_ebadf (EV_P) 1174fd_ebadf (EV_P)
953{ 1175{
954 int fd; 1176 int fd;
955 1177
956 for (fd = 0; fd < anfdmax; ++fd) 1178 for (fd = 0; fd < anfdmax; ++fd)
… …
958 if (!fd_valid (fd) && errno == EBADF) 1180 if (!fd_valid (fd) && errno == EBADF)
959 fd_kill (EV_A_ fd); 1181 fd_kill (EV_A_ fd);
960} 1182}
961 1183
962/* 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 */
963static void noinline 1185static void noinline ecb_cold
964fd_enomem (EV_P) 1186fd_enomem (EV_P)
965{ 1187{
966 int fd; 1188 int fd;
967 1189
968 for (fd = anfdmax; fd--; ) 1190 for (fd = anfdmax; fd--; )
… …
986 anfds [fd].emask = 0; 1208 anfds [fd].emask = 0;
987 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1209 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
988 } 1210 }
989} 1211}
990 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
991/*****************************************************************************/ 1227/*****************************************************************************/
992 1228
993/* 1229/*
994 * 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
995 * 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
996 * the branching factor of the d-tree. 1232 * the branching factor of the d-tree.
997 */ 1233 */
998 1234
999/* 1235/*
… …
1147 1383
1148static ANSIG signals [EV_NSIG - 1]; 1384static ANSIG signals [EV_NSIG - 1];
1149 1385
1150/*****************************************************************************/ 1386/*****************************************************************************/
1151 1387
1152/* used to prepare libev internal fd's */ 1388#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1153/* this is not fork-safe */
1154inline_speed void
1155fd_intern (int fd)
1156{
1157#ifdef _WIN32
1158 unsigned long arg = 1;
1159 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1160#else
1161 fcntl (fd, F_SETFD, FD_CLOEXEC);
1162 fcntl (fd, F_SETFL, O_NONBLOCK);
1163#endif
1164}
1165 1389
1166static void noinline 1390static void noinline ecb_cold
1167evpipe_init (EV_P) 1391evpipe_init (EV_P)
1168{ 1392{
1169 if (!ev_is_active (&pipe_w)) 1393 if (!ev_is_active (&pipe_w))
1170 { 1394 {
1171#if EV_USE_EVENTFD 1395# if EV_USE_EVENTFD
1172 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1396 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1173 if (evfd < 0 && errno == EINVAL) 1397 if (evfd < 0 && errno == EINVAL)
1174 evfd = eventfd (0, 0); 1398 evfd = eventfd (0, 0);
1175 1399
1176 if (evfd >= 0) 1400 if (evfd >= 0)
… …
1178 evpipe [0] = -1; 1402 evpipe [0] = -1;
1179 fd_intern (evfd); /* doing it twice doesn't hurt */ 1403 fd_intern (evfd); /* doing it twice doesn't hurt */
1180 ev_io_set (&pipe_w, evfd, EV_READ); 1404 ev_io_set (&pipe_w, evfd, EV_READ);
1181 } 1405 }
1182 else 1406 else
1183#endif 1407# endif
1184 { 1408 {
1185 while (pipe (evpipe)) 1409 while (pipe (evpipe))
1186 ev_syserr ("(libev) error creating signal/async pipe"); 1410 ev_syserr ("(libev) error creating signal/async pipe");
1187 1411
1188 fd_intern (evpipe [0]); 1412 fd_intern (evpipe [0]);
… …
1193 ev_io_start (EV_A_ &pipe_w); 1417 ev_io_start (EV_A_ &pipe_w);
1194 ev_unref (EV_A); /* watcher should not keep loop alive */ 1418 ev_unref (EV_A); /* watcher should not keep loop alive */
1195 } 1419 }
1196} 1420}
1197 1421
1198inline_size void 1422inline_speed void
1199evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1423evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1200{ 1424{
1201 if (!*flag) 1425 if (!*flag)
1202 { 1426 {
1203 int old_errno = errno; /* save errno because write might clobber it */
1204
1205 *flag = 1; 1427 *flag = 1;
1206 1428
1429 pipe_write_skipped = 1;
1430
1431 if (pipe_write_wanted)
1432 {
1433 int old_errno;
1434
1435 pipe_write_skipped = 0;
1436
1437 old_errno = errno; /* save errno because write will clobber it */
1438
1207#if EV_USE_EVENTFD 1439#if EV_USE_EVENTFD
1208 if (evfd >= 0) 1440 if (evfd >= 0)
1209 { 1441 {
1210 uint64_t counter = 1; 1442 uint64_t counter = 1;
1211 write (evfd, &counter, sizeof (uint64_t)); 1443 write (evfd, &counter, sizeof (uint64_t));
1444 }
1445 else
1446#endif
1447 {
1448 /* win32 people keep sending patches that change this write() to send() */
1449 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1450 /* so when you think this write should be a send instead, please find out */
1451 /* where your send() is from - it's definitely not the microsoft send, and */
1452 /* tell me. thank you. */
1453 write (evpipe [1], &(evpipe [1]), 1);
1454 }
1455
1456 errno = old_errno;
1212 } 1457 }
1213 else
1214#endif
1215 write (evpipe [1], &old_errno, 1);
1216
1217 errno = old_errno;
1218 } 1458 }
1219} 1459}
1220 1460
1221/* called whenever the libev signal pipe */ 1461/* called whenever the libev signal pipe */
1222/* got some events (signal, async) */ 1462/* got some events (signal, async) */
1223static void 1463static void
1224pipecb (EV_P_ ev_io *iow, int revents) 1464pipecb (EV_P_ ev_io *iow, int revents)
1225{ 1465{
1226 int i; 1466 int i;
1227 1467
1468 if (revents & EV_READ)
1469 {
1228#if EV_USE_EVENTFD 1470#if EV_USE_EVENTFD
1229 if (evfd >= 0) 1471 if (evfd >= 0)
1230 { 1472 {
1231 uint64_t counter; 1473 uint64_t counter;
1232 read (evfd, &counter, sizeof (uint64_t)); 1474 read (evfd, &counter, sizeof (uint64_t));
1233 } 1475 }
1234 else 1476 else
1235#endif 1477#endif
1236 { 1478 {
1237 char dummy; 1479 char dummy;
1480 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1238 read (evpipe [0], &dummy, 1); 1481 read (evpipe [0], &dummy, 1);
1482 }
1239 } 1483 }
1240 1484
1485 pipe_write_skipped = 0;
1486
1487#if EV_SIGNAL_ENABLE
1241 if (sig_pending) 1488 if (sig_pending)
1242 { 1489 {
1243 sig_pending = 0; 1490 sig_pending = 0;
1244 1491
1245 for (i = EV_NSIG - 1; i--; ) 1492 for (i = EV_NSIG - 1; i--; )
1246 if (expect_false (signals [i].pending)) 1493 if (expect_false (signals [i].pending))
1247 ev_feed_signal_event (EV_A_ i + 1); 1494 ev_feed_signal_event (EV_A_ i + 1);
1248 } 1495 }
1496#endif
1249 1497
1250#if EV_ASYNC_ENABLE 1498#if EV_ASYNC_ENABLE
1251 if (async_pending) 1499 if (async_pending)
1252 { 1500 {
1253 async_pending = 0; 1501 async_pending = 0;
… …
1262#endif 1510#endif
1263} 1511}
1264 1512
1265/*****************************************************************************/ 1513/*****************************************************************************/
1266 1514
1515void
1516ev_feed_signal (int signum)
1517{
1518#if EV_MULTIPLICITY
1519 EV_P = signals [signum - 1].loop;
1520
1521 if (!EV_A)
1522 return;
1523#endif
1524
1525 if (!ev_active (&pipe_w))
1526 return;
1527
1528 signals [signum - 1].pending = 1;
1529 evpipe_write (EV_A_ &sig_pending);
1530}
1531
1267static void 1532static void
1268ev_sighandler (int signum) 1533ev_sighandler (int signum)
1269{ 1534{
1270#if EV_MULTIPLICITY
1271 EV_P = signals [signum - 1].loop;
1272#endif
1273
1274#if _WIN32 1535#ifdef _WIN32
1275 signal (signum, ev_sighandler); 1536 signal (signum, ev_sighandler);
1276#endif 1537#endif
1277 1538
1278 signals [signum - 1].pending = 1; 1539 ev_feed_signal (signum);
1279 evpipe_write (EV_A_ &sig_pending);
1280} 1540}
1281 1541
1282void noinline 1542void noinline
1283ev_feed_signal_event (EV_P_ int signum) 1543ev_feed_signal_event (EV_P_ int signum)
1284{ 1544{
… …
1321 break; 1581 break;
1322 } 1582 }
1323} 1583}
1324#endif 1584#endif
1325 1585
1586#endif
1587
1326/*****************************************************************************/ 1588/*****************************************************************************/
1327 1589
1590#if EV_CHILD_ENABLE
1328static WL childs [EV_PID_HASHSIZE]; 1591static WL childs [EV_PID_HASHSIZE];
1329
1330#ifndef _WIN32
1331 1592
1332static ev_signal childev; 1593static ev_signal childev;
1333 1594
1334#ifndef WIFCONTINUED 1595#ifndef WIFCONTINUED
1335# define WIFCONTINUED(status) 0 1596# define WIFCONTINUED(status) 0
… …
1340child_reap (EV_P_ int chain, int pid, int status) 1601child_reap (EV_P_ int chain, int pid, int status)
1341{ 1602{
1342 ev_child *w; 1603 ev_child *w;
1343 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1604 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1344 1605
1345 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1606 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1346 { 1607 {
1347 if ((w->pid == pid || !w->pid) 1608 if ((w->pid == pid || !w->pid)
1348 && (!traced || (w->flags & 1))) 1609 && (!traced || (w->flags & 1)))
1349 { 1610 {
1350 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1611 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1375 /* make sure we are called again until all children have been reaped */ 1636 /* make sure we are called again until all children have been reaped */
1376 /* we need to do it this way so that the callback gets called before we continue */ 1637 /* we need to do it this way so that the callback gets called before we continue */
1377 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1638 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1378 1639
1379 child_reap (EV_A_ pid, pid, status); 1640 child_reap (EV_A_ pid, pid, status);
1380 if (EV_PID_HASHSIZE > 1) 1641 if ((EV_PID_HASHSIZE) > 1)
1381 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1642 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1382} 1643}
1383 1644
1384#endif 1645#endif
1385 1646
1386/*****************************************************************************/ 1647/*****************************************************************************/
1387 1648
1649#if EV_USE_IOCP
1650# include "ev_iocp.c"
1651#endif
1388#if EV_USE_PORT 1652#if EV_USE_PORT
1389# include "ev_port.c" 1653# include "ev_port.c"
1390#endif 1654#endif
1391#if EV_USE_KQUEUE 1655#if EV_USE_KQUEUE
1392# include "ev_kqueue.c" 1656# include "ev_kqueue.c"
… …
1399#endif 1663#endif
1400#if EV_USE_SELECT 1664#if EV_USE_SELECT
1401# include "ev_select.c" 1665# include "ev_select.c"
1402#endif 1666#endif
1403 1667
1404int 1668int ecb_cold
1405ev_version_major (void) 1669ev_version_major (void)
1406{ 1670{
1407 return EV_VERSION_MAJOR; 1671 return EV_VERSION_MAJOR;
1408} 1672}
1409 1673
1410int 1674int ecb_cold
1411ev_version_minor (void) 1675ev_version_minor (void)
1412{ 1676{
1413 return EV_VERSION_MINOR; 1677 return EV_VERSION_MINOR;
1414} 1678}
1415 1679
1416/* return true if we are running with elevated privileges and should ignore env variables */ 1680/* return true if we are running with elevated privileges and should ignore env variables */
1417int inline_size 1681int inline_size ecb_cold
1418enable_secure (void) 1682enable_secure (void)
1419{ 1683{
1420#ifdef _WIN32 1684#ifdef _WIN32
1421 return 0; 1685 return 0;
1422#else 1686#else
1423 return getuid () != geteuid () 1687 return getuid () != geteuid ()
1424 || getgid () != getegid (); 1688 || getgid () != getegid ();
1425#endif 1689#endif
1426} 1690}
1427 1691
1428unsigned int 1692unsigned int ecb_cold
1429ev_supported_backends (void) 1693ev_supported_backends (void)
1430{ 1694{
1431 unsigned int flags = 0; 1695 unsigned int flags = 0;
1432 1696
1433 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1697 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1437 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1701 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1438 1702
1439 return flags; 1703 return flags;
1440} 1704}
1441 1705
1442unsigned int 1706unsigned int ecb_cold
1443ev_recommended_backends (void) 1707ev_recommended_backends (void)
1444{ 1708{
1445 unsigned int flags = ev_supported_backends (); 1709 unsigned int flags = ev_supported_backends ();
1446 1710
1447#ifndef __NetBSD__ 1711#ifndef __NetBSD__
… …
1452#ifdef __APPLE__ 1716#ifdef __APPLE__
1453 /* only select works correctly on that "unix-certified" platform */ 1717 /* only select works correctly on that "unix-certified" platform */
1454 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1718 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1455 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1719 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1456#endif 1720#endif
1721#ifdef __FreeBSD__
1722 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1723#endif
1457 1724
1458 return flags; 1725 return flags;
1459} 1726}
1460 1727
1461unsigned int 1728unsigned int ecb_cold
1462ev_embeddable_backends (void) 1729ev_embeddable_backends (void)
1463{ 1730{
1464 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1731 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1465 1732
1466 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1733 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1467 /* please fix it and tell me how to detect the fix */ 1734 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1468 flags &= ~EVBACKEND_EPOLL; 1735 flags &= ~EVBACKEND_EPOLL;
1469 1736
1470 return flags; 1737 return flags;
1471} 1738}
1472 1739
1473unsigned int 1740unsigned int
1474ev_backend (EV_P) 1741ev_backend (EV_P)
1475{ 1742{
1476 return backend; 1743 return backend;
1477} 1744}
1478 1745
1479#if EV_MINIMAL < 2 1746#if EV_FEATURE_API
1480unsigned int 1747unsigned int
1481ev_loop_count (EV_P) 1748ev_iteration (EV_P)
1482{ 1749{
1483 return loop_count; 1750 return loop_count;
1484} 1751}
1485 1752
1486unsigned int 1753unsigned int
1487ev_loop_depth (EV_P) 1754ev_depth (EV_P)
1488{ 1755{
1489 return loop_depth; 1756 return loop_depth;
1490} 1757}
1491 1758
1492void 1759void
… …
1511ev_userdata (EV_P) 1778ev_userdata (EV_P)
1512{ 1779{
1513 return userdata; 1780 return userdata;
1514} 1781}
1515 1782
1783void
1516void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 1784ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1517{ 1785{
1518 invoke_cb = invoke_pending_cb; 1786 invoke_cb = invoke_pending_cb;
1519} 1787}
1520 1788
1789void
1521void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 1790ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1522{ 1791{
1523 release_cb = release; 1792 release_cb = release;
1524 acquire_cb = acquire; 1793 acquire_cb = acquire;
1525} 1794}
1526#endif 1795#endif
1527 1796
1528/* initialise a loop structure, must be zero-initialised */ 1797/* initialise a loop structure, must be zero-initialised */
1529static void noinline 1798static void noinline ecb_cold
1530loop_init (EV_P_ unsigned int flags) 1799loop_init (EV_P_ unsigned int flags)
1531{ 1800{
1532 if (!backend) 1801 if (!backend)
1533 { 1802 {
1803 origflags = flags;
1804
1534#if EV_USE_REALTIME 1805#if EV_USE_REALTIME
1535 if (!have_realtime) 1806 if (!have_realtime)
1536 { 1807 {
1537 struct timespec ts; 1808 struct timespec ts;
1538 1809
… …
1560 if (!(flags & EVFLAG_NOENV) 1831 if (!(flags & EVFLAG_NOENV)
1561 && !enable_secure () 1832 && !enable_secure ()
1562 && getenv ("LIBEV_FLAGS")) 1833 && getenv ("LIBEV_FLAGS"))
1563 flags = atoi (getenv ("LIBEV_FLAGS")); 1834 flags = atoi (getenv ("LIBEV_FLAGS"));
1564 1835
1565 ev_rt_now = ev_time (); 1836 ev_rt_now = ev_time ();
1566 mn_now = get_clock (); 1837 mn_now = get_clock ();
1567 now_floor = mn_now; 1838 now_floor = mn_now;
1568 rtmn_diff = ev_rt_now - mn_now; 1839 rtmn_diff = ev_rt_now - mn_now;
1569#if EV_MINIMAL < 2 1840#if EV_FEATURE_API
1570 invoke_cb = ev_invoke_pending; 1841 invoke_cb = ev_invoke_pending;
1571#endif 1842#endif
1572 1843
1573 io_blocktime = 0.; 1844 io_blocktime = 0.;
1574 timeout_blocktime = 0.; 1845 timeout_blocktime = 0.;
1575 backend = 0; 1846 backend = 0;
1576 backend_fd = -1; 1847 backend_fd = -1;
1577 sig_pending = 0; 1848 sig_pending = 0;
1578#if EV_ASYNC_ENABLE 1849#if EV_ASYNC_ENABLE
1579 async_pending = 0; 1850 async_pending = 0;
1580#endif 1851#endif
1852 pipe_write_skipped = 0;
1853 pipe_write_wanted = 0;
1581#if EV_USE_INOTIFY 1854#if EV_USE_INOTIFY
1582 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 1855 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1583#endif 1856#endif
1584#if EV_USE_SIGNALFD 1857#if EV_USE_SIGNALFD
1585 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 1858 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1586#endif 1859#endif
1587 1860
1588 if (!(flags & 0x0000ffffU)) 1861 if (!(flags & EVBACKEND_MASK))
1589 flags |= ev_recommended_backends (); 1862 flags |= ev_recommended_backends ();
1590 1863
1864#if EV_USE_IOCP
1865 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1866#endif
1591#if EV_USE_PORT 1867#if EV_USE_PORT
1592 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1868 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1593#endif 1869#endif
1594#if EV_USE_KQUEUE 1870#if EV_USE_KQUEUE
1595 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1871 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1604 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1880 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1605#endif 1881#endif
1606 1882
1607 ev_prepare_init (&pending_w, pendingcb); 1883 ev_prepare_init (&pending_w, pendingcb);
1608 1884
1885#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1609 ev_init (&pipe_w, pipecb); 1886 ev_init (&pipe_w, pipecb);
1610 ev_set_priority (&pipe_w, EV_MAXPRI); 1887 ev_set_priority (&pipe_w, EV_MAXPRI);
1888#endif
1611 } 1889 }
1612} 1890}
1613 1891
1614/* free up a loop structure */ 1892/* free up a loop structure */
1615static void noinline 1893void ecb_cold
1616loop_destroy (EV_P) 1894ev_loop_destroy (EV_P)
1617{ 1895{
1618 int i; 1896 int i;
1897
1898#if EV_MULTIPLICITY
1899 /* mimic free (0) */
1900 if (!EV_A)
1901 return;
1902#endif
1903
1904#if EV_CLEANUP_ENABLE
1905 /* queue cleanup watchers (and execute them) */
1906 if (expect_false (cleanupcnt))
1907 {
1908 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1909 EV_INVOKE_PENDING;
1910 }
1911#endif
1912
1913#if EV_CHILD_ENABLE
1914 if (ev_is_active (&childev))
1915 {
1916 ev_ref (EV_A); /* child watcher */
1917 ev_signal_stop (EV_A_ &childev);
1918 }
1919#endif
1619 1920
1620 if (ev_is_active (&pipe_w)) 1921 if (ev_is_active (&pipe_w))
1621 { 1922 {
1622 /*ev_ref (EV_A);*/ 1923 /*ev_ref (EV_A);*/
1623 /*ev_io_stop (EV_A_ &pipe_w);*/ 1924 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1634 } 1935 }
1635 } 1936 }
1636 1937
1637#if EV_USE_SIGNALFD 1938#if EV_USE_SIGNALFD
1638 if (ev_is_active (&sigfd_w)) 1939 if (ev_is_active (&sigfd_w))
1639 {
1640 /*ev_ref (EV_A);*/
1641 /*ev_io_stop (EV_A_ &sigfd_w);*/
1642
1643 close (sigfd); 1940 close (sigfd);
1644 }
1645#endif 1941#endif
1646 1942
1647#if EV_USE_INOTIFY 1943#if EV_USE_INOTIFY
1648 if (fs_fd >= 0) 1944 if (fs_fd >= 0)
1649 close (fs_fd); 1945 close (fs_fd);
1650#endif 1946#endif
1651 1947
1652 if (backend_fd >= 0) 1948 if (backend_fd >= 0)
1653 close (backend_fd); 1949 close (backend_fd);
1654 1950
1951#if EV_USE_IOCP
1952 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1953#endif
1655#if EV_USE_PORT 1954#if EV_USE_PORT
1656 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1955 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1657#endif 1956#endif
1658#if EV_USE_KQUEUE 1957#if EV_USE_KQUEUE
1659 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1958 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1686 array_free (periodic, EMPTY); 1985 array_free (periodic, EMPTY);
1687#endif 1986#endif
1688#if EV_FORK_ENABLE 1987#if EV_FORK_ENABLE
1689 array_free (fork, EMPTY); 1988 array_free (fork, EMPTY);
1690#endif 1989#endif
1990#if EV_CLEANUP_ENABLE
1991 array_free (cleanup, EMPTY);
1992#endif
1691 array_free (prepare, EMPTY); 1993 array_free (prepare, EMPTY);
1692 array_free (check, EMPTY); 1994 array_free (check, EMPTY);
1693#if EV_ASYNC_ENABLE 1995#if EV_ASYNC_ENABLE
1694 array_free (async, EMPTY); 1996 array_free (async, EMPTY);
1695#endif 1997#endif
1696 1998
1697 backend = 0; 1999 backend = 0;
2000
2001#if EV_MULTIPLICITY
2002 if (ev_is_default_loop (EV_A))
2003#endif
2004 ev_default_loop_ptr = 0;
2005#if EV_MULTIPLICITY
2006 else
2007 ev_free (EV_A);
2008#endif
1698} 2009}
1699 2010
1700#if EV_USE_INOTIFY 2011#if EV_USE_INOTIFY
1701inline_size void infy_fork (EV_P); 2012inline_size void infy_fork (EV_P);
1702#endif 2013#endif
… …
1717 infy_fork (EV_A); 2028 infy_fork (EV_A);
1718#endif 2029#endif
1719 2030
1720 if (ev_is_active (&pipe_w)) 2031 if (ev_is_active (&pipe_w))
1721 { 2032 {
1722 /* this "locks" the handlers against writing to the pipe */ 2033 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1723 /* while we modify the fd vars */
1724 sig_pending = 1;
1725#if EV_ASYNC_ENABLE
1726 async_pending = 1;
1727#endif
1728 2034
1729 ev_ref (EV_A); 2035 ev_ref (EV_A);
1730 ev_io_stop (EV_A_ &pipe_w); 2036 ev_io_stop (EV_A_ &pipe_w);
1731 2037
1732#if EV_USE_EVENTFD 2038#if EV_USE_EVENTFD
… …
1738 { 2044 {
1739 EV_WIN32_CLOSE_FD (evpipe [0]); 2045 EV_WIN32_CLOSE_FD (evpipe [0]);
1740 EV_WIN32_CLOSE_FD (evpipe [1]); 2046 EV_WIN32_CLOSE_FD (evpipe [1]);
1741 } 2047 }
1742 2048
2049#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1743 evpipe_init (EV_A); 2050 evpipe_init (EV_A);
1744 /* now iterate over everything, in case we missed something */ 2051 /* now iterate over everything, in case we missed something */
1745 pipecb (EV_A_ &pipe_w, EV_READ); 2052 pipecb (EV_A_ &pipe_w, EV_READ);
2053#endif
1746 } 2054 }
1747 2055
1748 postfork = 0; 2056 postfork = 0;
1749} 2057}
1750 2058
1751#if EV_MULTIPLICITY 2059#if EV_MULTIPLICITY
1752 2060
1753struct ev_loop * 2061struct ev_loop * ecb_cold
1754ev_loop_new (unsigned int flags) 2062ev_loop_new (unsigned int flags)
1755{ 2063{
1756 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2064 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1757 2065
1758 memset (EV_A, 0, sizeof (struct ev_loop)); 2066 memset (EV_A, 0, sizeof (struct ev_loop));
1759 loop_init (EV_A_ flags); 2067 loop_init (EV_A_ flags);
1760 2068
1761 if (ev_backend (EV_A)) 2069 if (ev_backend (EV_A))
1762 return EV_A; 2070 return EV_A;
1763 2071
2072 ev_free (EV_A);
1764 return 0; 2073 return 0;
1765} 2074}
1766 2075
1767void
1768ev_loop_destroy (EV_P)
1769{
1770 loop_destroy (EV_A);
1771 ev_free (loop);
1772}
1773
1774void
1775ev_loop_fork (EV_P)
1776{
1777 postfork = 1; /* must be in line with ev_default_fork */
1778}
1779#endif /* multiplicity */ 2076#endif /* multiplicity */
1780 2077
1781#if EV_VERIFY 2078#if EV_VERIFY
1782static void noinline 2079static void noinline ecb_cold
1783verify_watcher (EV_P_ W w) 2080verify_watcher (EV_P_ W w)
1784{ 2081{
1785 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2082 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1786 2083
1787 if (w->pending) 2084 if (w->pending)
1788 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2085 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1789} 2086}
1790 2087
1791static void noinline 2088static void noinline ecb_cold
1792verify_heap (EV_P_ ANHE *heap, int N) 2089verify_heap (EV_P_ ANHE *heap, int N)
1793{ 2090{
1794 int i; 2091 int i;
1795 2092
1796 for (i = HEAP0; i < N + HEAP0; ++i) 2093 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1801 2098
1802 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2099 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1803 } 2100 }
1804} 2101}
1805 2102
1806static void noinline 2103static void noinline ecb_cold
1807array_verify (EV_P_ W *ws, int cnt) 2104array_verify (EV_P_ W *ws, int cnt)
1808{ 2105{
1809 while (cnt--) 2106 while (cnt--)
1810 { 2107 {
1811 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2108 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1812 verify_watcher (EV_A_ ws [cnt]); 2109 verify_watcher (EV_A_ ws [cnt]);
1813 } 2110 }
1814} 2111}
1815#endif 2112#endif
1816 2113
1817#if EV_MINIMAL < 2 2114#if EV_FEATURE_API
1818void 2115void ecb_cold
1819ev_loop_verify (EV_P) 2116ev_verify (EV_P)
1820{ 2117{
1821#if EV_VERIFY 2118#if EV_VERIFY
1822 int i; 2119 int i;
1823 WL w; 2120 WL w;
1824 2121
… …
1858#if EV_FORK_ENABLE 2155#if EV_FORK_ENABLE
1859 assert (forkmax >= forkcnt); 2156 assert (forkmax >= forkcnt);
1860 array_verify (EV_A_ (W *)forks, forkcnt); 2157 array_verify (EV_A_ (W *)forks, forkcnt);
1861#endif 2158#endif
1862 2159
2160#if EV_CLEANUP_ENABLE
2161 assert (cleanupmax >= cleanupcnt);
2162 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2163#endif
2164
1863#if EV_ASYNC_ENABLE 2165#if EV_ASYNC_ENABLE
1864 assert (asyncmax >= asynccnt); 2166 assert (asyncmax >= asynccnt);
1865 array_verify (EV_A_ (W *)asyncs, asynccnt); 2167 array_verify (EV_A_ (W *)asyncs, asynccnt);
1866#endif 2168#endif
1867 2169
2170#if EV_PREPARE_ENABLE
1868 assert (preparemax >= preparecnt); 2171 assert (preparemax >= preparecnt);
1869 array_verify (EV_A_ (W *)prepares, preparecnt); 2172 array_verify (EV_A_ (W *)prepares, preparecnt);
2173#endif
1870 2174
2175#if EV_CHECK_ENABLE
1871 assert (checkmax >= checkcnt); 2176 assert (checkmax >= checkcnt);
1872 array_verify (EV_A_ (W *)checks, checkcnt); 2177 array_verify (EV_A_ (W *)checks, checkcnt);
2178#endif
1873 2179
1874# if 0 2180# if 0
2181#if EV_CHILD_ENABLE
1875 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2182 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1876 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2183 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2184#endif
1877# endif 2185# endif
1878#endif 2186#endif
1879} 2187}
1880#endif 2188#endif
1881 2189
1882#if EV_MULTIPLICITY 2190#if EV_MULTIPLICITY
1883struct ev_loop * 2191struct ev_loop * ecb_cold
1884ev_default_loop_init (unsigned int flags)
1885#else 2192#else
1886int 2193int
2194#endif
1887ev_default_loop (unsigned int flags) 2195ev_default_loop (unsigned int flags)
1888#endif
1889{ 2196{
1890 if (!ev_default_loop_ptr) 2197 if (!ev_default_loop_ptr)
1891 { 2198 {
1892#if EV_MULTIPLICITY 2199#if EV_MULTIPLICITY
1893 EV_P = ev_default_loop_ptr = &default_loop_struct; 2200 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1897 2204
1898 loop_init (EV_A_ flags); 2205 loop_init (EV_A_ flags);
1899 2206
1900 if (ev_backend (EV_A)) 2207 if (ev_backend (EV_A))
1901 { 2208 {
1902#ifndef _WIN32 2209#if EV_CHILD_ENABLE
1903 ev_signal_init (&childev, childcb, SIGCHLD); 2210 ev_signal_init (&childev, childcb, SIGCHLD);
1904 ev_set_priority (&childev, EV_MAXPRI); 2211 ev_set_priority (&childev, EV_MAXPRI);
1905 ev_signal_start (EV_A_ &childev); 2212 ev_signal_start (EV_A_ &childev);
1906 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2213 ev_unref (EV_A); /* child watcher should not keep loop alive */
1907#endif 2214#endif
… …
1912 2219
1913 return ev_default_loop_ptr; 2220 return ev_default_loop_ptr;
1914} 2221}
1915 2222
1916void 2223void
1917ev_default_destroy (void) 2224ev_loop_fork (EV_P)
1918{ 2225{
1919#if EV_MULTIPLICITY
1920 EV_P = ev_default_loop_ptr;
1921#endif
1922
1923 ev_default_loop_ptr = 0;
1924
1925#ifndef _WIN32
1926 ev_ref (EV_A); /* child watcher */
1927 ev_signal_stop (EV_A_ &childev);
1928#endif
1929
1930 loop_destroy (EV_A);
1931}
1932
1933void
1934ev_default_fork (void)
1935{
1936#if EV_MULTIPLICITY
1937 EV_P = ev_default_loop_ptr;
1938#endif
1939
1940 postfork = 1; /* must be in line with ev_loop_fork */ 2226 postfork = 1; /* must be in line with ev_default_fork */
1941} 2227}
1942 2228
1943/*****************************************************************************/ 2229/*****************************************************************************/
1944 2230
1945void 2231void
… …
1967 2253
1968 for (pri = NUMPRI; pri--; ) 2254 for (pri = NUMPRI; pri--; )
1969 while (pendingcnt [pri]) 2255 while (pendingcnt [pri])
1970 { 2256 {
1971 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2257 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1972
1973 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1974 /* ^ this is no longer true, as pending_w could be here */
1975 2258
1976 p->w->pending = 0; 2259 p->w->pending = 0;
1977 EV_CB_INVOKE (p->w, p->events); 2260 EV_CB_INVOKE (p->w, p->events);
1978 EV_FREQUENT_CHECK; 2261 EV_FREQUENT_CHECK;
1979 } 2262 }
… …
2036 EV_FREQUENT_CHECK; 2319 EV_FREQUENT_CHECK;
2037 feed_reverse (EV_A_ (W)w); 2320 feed_reverse (EV_A_ (W)w);
2038 } 2321 }
2039 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2322 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2040 2323
2041 feed_reverse_done (EV_A_ EV_TIMEOUT); 2324 feed_reverse_done (EV_A_ EV_TIMER);
2042 } 2325 }
2043} 2326}
2044 2327
2045#if EV_PERIODIC_ENABLE 2328#if EV_PERIODIC_ENABLE
2329
2330static void noinline
2331periodic_recalc (EV_P_ ev_periodic *w)
2332{
2333 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2334 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2335
2336 /* the above almost always errs on the low side */
2337 while (at <= ev_rt_now)
2338 {
2339 ev_tstamp nat = at + w->interval;
2340
2341 /* when resolution fails us, we use ev_rt_now */
2342 if (expect_false (nat == at))
2343 {
2344 at = ev_rt_now;
2345 break;
2346 }
2347
2348 at = nat;
2349 }
2350
2351 ev_at (w) = at;
2352}
2353
2046/* make periodics pending */ 2354/* make periodics pending */
2047inline_size void 2355inline_size void
2048periodics_reify (EV_P) 2356periodics_reify (EV_P)
2049{ 2357{
2050 EV_FREQUENT_CHECK; 2358 EV_FREQUENT_CHECK;
… …
2069 ANHE_at_cache (periodics [HEAP0]); 2377 ANHE_at_cache (periodics [HEAP0]);
2070 downheap (periodics, periodiccnt, HEAP0); 2378 downheap (periodics, periodiccnt, HEAP0);
2071 } 2379 }
2072 else if (w->interval) 2380 else if (w->interval)
2073 { 2381 {
2074 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2382 periodic_recalc (EV_A_ w);
2075 /* if next trigger time is not sufficiently in the future, put it there */
2076 /* this might happen because of floating point inexactness */
2077 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2078 {
2079 ev_at (w) += w->interval;
2080
2081 /* if interval is unreasonably low we might still have a time in the past */
2082 /* so correct this. this will make the periodic very inexact, but the user */
2083 /* has effectively asked to get triggered more often than possible */
2084 if (ev_at (w) < ev_rt_now)
2085 ev_at (w) = ev_rt_now;
2086 }
2087
2088 ANHE_at_cache (periodics [HEAP0]); 2383 ANHE_at_cache (periodics [HEAP0]);
2089 downheap (periodics, periodiccnt, HEAP0); 2384 downheap (periodics, periodiccnt, HEAP0);
2090 } 2385 }
2091 else 2386 else
2092 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2387 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2099 feed_reverse_done (EV_A_ EV_PERIODIC); 2394 feed_reverse_done (EV_A_ EV_PERIODIC);
2100 } 2395 }
2101} 2396}
2102 2397
2103/* simply recalculate all periodics */ 2398/* simply recalculate all periodics */
2104/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2399/* TODO: maybe ensure that at least one event happens when jumping forward? */
2105static void noinline 2400static void noinline ecb_cold
2106periodics_reschedule (EV_P) 2401periodics_reschedule (EV_P)
2107{ 2402{
2108 int i; 2403 int i;
2109 2404
2110 /* adjust periodics after time jump */ 2405 /* adjust periodics after time jump */
… …
2113 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2408 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2114 2409
2115 if (w->reschedule_cb) 2410 if (w->reschedule_cb)
2116 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2411 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2117 else if (w->interval) 2412 else if (w->interval)
2118 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2413 periodic_recalc (EV_A_ w);
2119 2414
2120 ANHE_at_cache (periodics [i]); 2415 ANHE_at_cache (periodics [i]);
2121 } 2416 }
2122 2417
2123 reheap (periodics, periodiccnt); 2418 reheap (periodics, periodiccnt);
2124} 2419}
2125#endif 2420#endif
2126 2421
2127/* adjust all timers by a given offset */ 2422/* adjust all timers by a given offset */
2128static void noinline 2423static void noinline ecb_cold
2129timers_reschedule (EV_P_ ev_tstamp adjust) 2424timers_reschedule (EV_P_ ev_tstamp adjust)
2130{ 2425{
2131 int i; 2426 int i;
2132 2427
2133 for (i = 0; i < timercnt; ++i) 2428 for (i = 0; i < timercnt; ++i)
… …
2137 ANHE_at_cache (*he); 2432 ANHE_at_cache (*he);
2138 } 2433 }
2139} 2434}
2140 2435
2141/* fetch new monotonic and realtime times from the kernel */ 2436/* fetch new monotonic and realtime times from the kernel */
2142/* also detetc if there was a timejump, and act accordingly */ 2437/* also detect if there was a timejump, and act accordingly */
2143inline_speed void 2438inline_speed void
2144time_update (EV_P_ ev_tstamp max_block) 2439time_update (EV_P_ ev_tstamp max_block)
2145{ 2440{
2146#if EV_USE_MONOTONIC 2441#if EV_USE_MONOTONIC
2147 if (expect_true (have_monotonic)) 2442 if (expect_true (have_monotonic))
… …
2170 * doesn't hurt either as we only do this on time-jumps or 2465 * doesn't hurt either as we only do this on time-jumps or
2171 * in the unlikely event of having been preempted here. 2466 * in the unlikely event of having been preempted here.
2172 */ 2467 */
2173 for (i = 4; --i; ) 2468 for (i = 4; --i; )
2174 { 2469 {
2470 ev_tstamp diff;
2175 rtmn_diff = ev_rt_now - mn_now; 2471 rtmn_diff = ev_rt_now - mn_now;
2176 2472
2473 diff = odiff - rtmn_diff;
2474
2177 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2475 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2178 return; /* all is well */ 2476 return; /* all is well */
2179 2477
2180 ev_rt_now = ev_time (); 2478 ev_rt_now = ev_time ();
2181 mn_now = get_clock (); 2479 mn_now = get_clock ();
2182 now_floor = mn_now; 2480 now_floor = mn_now;
… …
2205 mn_now = ev_rt_now; 2503 mn_now = ev_rt_now;
2206 } 2504 }
2207} 2505}
2208 2506
2209void 2507void
2210ev_loop (EV_P_ int flags) 2508ev_run (EV_P_ int flags)
2211{ 2509{
2212#if EV_MINIMAL < 2 2510#if EV_FEATURE_API
2213 ++loop_depth; 2511 ++loop_depth;
2214#endif 2512#endif
2215 2513
2216 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2514 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2217 2515
2218 loop_done = EVUNLOOP_CANCEL; 2516 loop_done = EVBREAK_CANCEL;
2219 2517
2220 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2518 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2221 2519
2222 do 2520 do
2223 { 2521 {
2224#if EV_VERIFY >= 2 2522#if EV_VERIFY >= 2
2225 ev_loop_verify (EV_A); 2523 ev_verify (EV_A);
2226#endif 2524#endif
2227 2525
2228#ifndef _WIN32 2526#ifndef _WIN32
2229 if (expect_false (curpid)) /* penalise the forking check even more */ 2527 if (expect_false (curpid)) /* penalise the forking check even more */
2230 if (expect_false (getpid () != curpid)) 2528 if (expect_false (getpid () != curpid))
… …
2242 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2540 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2243 EV_INVOKE_PENDING; 2541 EV_INVOKE_PENDING;
2244 } 2542 }
2245#endif 2543#endif
2246 2544
2545#if EV_PREPARE_ENABLE
2247 /* queue prepare watchers (and execute them) */ 2546 /* queue prepare watchers (and execute them) */
2248 if (expect_false (preparecnt)) 2547 if (expect_false (preparecnt))
2249 { 2548 {
2250 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2549 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2251 EV_INVOKE_PENDING; 2550 EV_INVOKE_PENDING;
2252 } 2551 }
2552#endif
2253 2553
2254 if (expect_false (loop_done)) 2554 if (expect_false (loop_done))
2255 break; 2555 break;
2256 2556
2257 /* we might have forked, so reify kernel state if necessary */ 2557 /* we might have forked, so reify kernel state if necessary */
… …
2264 /* calculate blocking time */ 2564 /* calculate blocking time */
2265 { 2565 {
2266 ev_tstamp waittime = 0.; 2566 ev_tstamp waittime = 0.;
2267 ev_tstamp sleeptime = 0.; 2567 ev_tstamp sleeptime = 0.;
2268 2568
2569 /* remember old timestamp for io_blocktime calculation */
2570 ev_tstamp prev_mn_now = mn_now;
2571
2572 /* update time to cancel out callback processing overhead */
2573 time_update (EV_A_ 1e100);
2574
2575 /* from now on, we want a pipe-wake-up */
2576 pipe_write_wanted = 1;
2577
2269 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2578 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2270 { 2579 {
2271 /* remember old timestamp for io_blocktime calculation */
2272 ev_tstamp prev_mn_now = mn_now;
2273
2274 /* update time to cancel out callback processing overhead */
2275 time_update (EV_A_ 1e100);
2276
2277 waittime = MAX_BLOCKTIME; 2580 waittime = MAX_BLOCKTIME;
2278 2581
2279 if (timercnt) 2582 if (timercnt)
2280 { 2583 {
2281 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2584 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2282 if (waittime > to) waittime = to; 2585 if (waittime > to) waittime = to;
2283 } 2586 }
2284 2587
2285#if EV_PERIODIC_ENABLE 2588#if EV_PERIODIC_ENABLE
2286 if (periodiccnt) 2589 if (periodiccnt)
2287 { 2590 {
2288 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2591 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2289 if (waittime > to) waittime = to; 2592 if (waittime > to) waittime = to;
2290 } 2593 }
2291#endif 2594#endif
2292 2595
2293 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2596 /* don't let timeouts decrease the waittime below timeout_blocktime */
2294 if (expect_false (waittime < timeout_blocktime)) 2597 if (expect_false (waittime < timeout_blocktime))
2295 waittime = timeout_blocktime; 2598 waittime = timeout_blocktime;
2599
2600 /* at this point, we NEED to wait, so we have to ensure */
2601 /* to pass a minimum nonzero value to the backend */
2602 if (expect_false (waittime < backend_mintime))
2603 waittime = backend_mintime;
2296 2604
2297 /* extra check because io_blocktime is commonly 0 */ 2605 /* extra check because io_blocktime is commonly 0 */
2298 if (expect_false (io_blocktime)) 2606 if (expect_false (io_blocktime))
2299 { 2607 {
2300 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2608 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2301 2609
2302 if (sleeptime > waittime - backend_fudge) 2610 if (sleeptime > waittime - backend_mintime)
2303 sleeptime = waittime - backend_fudge; 2611 sleeptime = waittime - backend_mintime;
2304 2612
2305 if (expect_true (sleeptime > 0.)) 2613 if (expect_true (sleeptime > 0.))
2306 { 2614 {
2307 ev_sleep (sleeptime); 2615 ev_sleep (sleeptime);
2308 waittime -= sleeptime; 2616 waittime -= sleeptime;
2309 } 2617 }
2310 } 2618 }
2311 } 2619 }
2312 2620
2313#if EV_MINIMAL < 2 2621#if EV_FEATURE_API
2314 ++loop_count; 2622 ++loop_count;
2315#endif 2623#endif
2316 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 2624 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2317 backend_poll (EV_A_ waittime); 2625 backend_poll (EV_A_ waittime);
2318 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 2626 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2627
2628 pipe_write_wanted = 0;
2629
2630 if (pipe_write_skipped)
2631 {
2632 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2633 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2634 }
2635
2319 2636
2320 /* update ev_rt_now, do magic */ 2637 /* update ev_rt_now, do magic */
2321 time_update (EV_A_ waittime + sleeptime); 2638 time_update (EV_A_ waittime + sleeptime);
2322 } 2639 }
2323 2640
… …
2330#if EV_IDLE_ENABLE 2647#if EV_IDLE_ENABLE
2331 /* queue idle watchers unless other events are pending */ 2648 /* queue idle watchers unless other events are pending */
2332 idle_reify (EV_A); 2649 idle_reify (EV_A);
2333#endif 2650#endif
2334 2651
2652#if EV_CHECK_ENABLE
2335 /* queue check watchers, to be executed first */ 2653 /* queue check watchers, to be executed first */
2336 if (expect_false (checkcnt)) 2654 if (expect_false (checkcnt))
2337 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2655 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2656#endif
2338 2657
2339 EV_INVOKE_PENDING; 2658 EV_INVOKE_PENDING;
2340 } 2659 }
2341 while (expect_true ( 2660 while (expect_true (
2342 activecnt 2661 activecnt
2343 && !loop_done 2662 && !loop_done
2344 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2663 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2345 )); 2664 ));
2346 2665
2347 if (loop_done == EVUNLOOP_ONE) 2666 if (loop_done == EVBREAK_ONE)
2348 loop_done = EVUNLOOP_CANCEL; 2667 loop_done = EVBREAK_CANCEL;
2349 2668
2350#if EV_MINIMAL < 2 2669#if EV_FEATURE_API
2351 --loop_depth; 2670 --loop_depth;
2352#endif 2671#endif
2353} 2672}
2354 2673
2355void 2674void
2356ev_unloop (EV_P_ int how) 2675ev_break (EV_P_ int how)
2357{ 2676{
2358 loop_done = how; 2677 loop_done = how;
2359} 2678}
2360 2679
2361void 2680void
… …
2481 2800
2482 if (expect_false (ev_is_active (w))) 2801 if (expect_false (ev_is_active (w)))
2483 return; 2802 return;
2484 2803
2485 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2804 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2486 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2805 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2487 2806
2488 EV_FREQUENT_CHECK; 2807 EV_FREQUENT_CHECK;
2489 2808
2490 ev_start (EV_A_ (W)w, 1); 2809 ev_start (EV_A_ (W)w, 1);
2491 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2810 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2509 EV_FREQUENT_CHECK; 2828 EV_FREQUENT_CHECK;
2510 2829
2511 wlist_del (&anfds[w->fd].head, (WL)w); 2830 wlist_del (&anfds[w->fd].head, (WL)w);
2512 ev_stop (EV_A_ (W)w); 2831 ev_stop (EV_A_ (W)w);
2513 2832
2514 fd_change (EV_A_ w->fd, 1); 2833 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2515 2834
2516 EV_FREQUENT_CHECK; 2835 EV_FREQUENT_CHECK;
2517} 2836}
2518 2837
2519void noinline 2838void noinline
… …
2561 timers [active] = timers [timercnt + HEAP0]; 2880 timers [active] = timers [timercnt + HEAP0];
2562 adjustheap (timers, timercnt, active); 2881 adjustheap (timers, timercnt, active);
2563 } 2882 }
2564 } 2883 }
2565 2884
2566 EV_FREQUENT_CHECK;
2567
2568 ev_at (w) -= mn_now; 2885 ev_at (w) -= mn_now;
2569 2886
2570 ev_stop (EV_A_ (W)w); 2887 ev_stop (EV_A_ (W)w);
2888
2889 EV_FREQUENT_CHECK;
2571} 2890}
2572 2891
2573void noinline 2892void noinline
2574ev_timer_again (EV_P_ ev_timer *w) 2893ev_timer_again (EV_P_ ev_timer *w)
2575{ 2894{
… …
2611 if (w->reschedule_cb) 2930 if (w->reschedule_cb)
2612 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2931 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2613 else if (w->interval) 2932 else if (w->interval)
2614 { 2933 {
2615 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2934 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2616 /* this formula differs from the one in periodic_reify because we do not always round up */ 2935 periodic_recalc (EV_A_ w);
2617 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2618 } 2936 }
2619 else 2937 else
2620 ev_at (w) = w->offset; 2938 ev_at (w) = w->offset;
2621 2939
2622 EV_FREQUENT_CHECK; 2940 EV_FREQUENT_CHECK;
… …
2654 periodics [active] = periodics [periodiccnt + HEAP0]; 2972 periodics [active] = periodics [periodiccnt + HEAP0];
2655 adjustheap (periodics, periodiccnt, active); 2973 adjustheap (periodics, periodiccnt, active);
2656 } 2974 }
2657 } 2975 }
2658 2976
2659 EV_FREQUENT_CHECK;
2660
2661 ev_stop (EV_A_ (W)w); 2977 ev_stop (EV_A_ (W)w);
2978
2979 EV_FREQUENT_CHECK;
2662} 2980}
2663 2981
2664void noinline 2982void noinline
2665ev_periodic_again (EV_P_ ev_periodic *w) 2983ev_periodic_again (EV_P_ ev_periodic *w)
2666{ 2984{
… …
2671#endif 2989#endif
2672 2990
2673#ifndef SA_RESTART 2991#ifndef SA_RESTART
2674# define SA_RESTART 0 2992# define SA_RESTART 0
2675#endif 2993#endif
2994
2995#if EV_SIGNAL_ENABLE
2676 2996
2677void noinline 2997void noinline
2678ev_signal_start (EV_P_ ev_signal *w) 2998ev_signal_start (EV_P_ ev_signal *w)
2679{ 2999{
2680 if (expect_false (ev_is_active (w))) 3000 if (expect_false (ev_is_active (w)))
… …
2727 if (!((WL)w)->next) 3047 if (!((WL)w)->next)
2728# if EV_USE_SIGNALFD 3048# if EV_USE_SIGNALFD
2729 if (sigfd < 0) /*TODO*/ 3049 if (sigfd < 0) /*TODO*/
2730# endif 3050# endif
2731 { 3051 {
2732# if _WIN32 3052# ifdef _WIN32
3053 evpipe_init (EV_A);
3054
2733 signal (w->signum, ev_sighandler); 3055 signal (w->signum, ev_sighandler);
2734# else 3056# else
2735 struct sigaction sa; 3057 struct sigaction sa;
2736 3058
2737 evpipe_init (EV_A); 3059 evpipe_init (EV_A);
… …
2739 sa.sa_handler = ev_sighandler; 3061 sa.sa_handler = ev_sighandler;
2740 sigfillset (&sa.sa_mask); 3062 sigfillset (&sa.sa_mask);
2741 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3063 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2742 sigaction (w->signum, &sa, 0); 3064 sigaction (w->signum, &sa, 0);
2743 3065
3066 if (origflags & EVFLAG_NOSIGMASK)
3067 {
2744 sigemptyset (&sa.sa_mask); 3068 sigemptyset (&sa.sa_mask);
2745 sigaddset (&sa.sa_mask, w->signum); 3069 sigaddset (&sa.sa_mask, w->signum);
2746 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3070 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3071 }
2747#endif 3072#endif
2748 } 3073 }
2749 3074
2750 EV_FREQUENT_CHECK; 3075 EV_FREQUENT_CHECK;
2751} 3076}
… …
2768 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3093 signals [w->signum - 1].loop = 0; /* unattach from signal */
2769#endif 3094#endif
2770#if EV_USE_SIGNALFD 3095#if EV_USE_SIGNALFD
2771 if (sigfd >= 0) 3096 if (sigfd >= 0)
2772 { 3097 {
2773 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3098 sigset_t ss;
3099
3100 sigemptyset (&ss);
3101 sigaddset (&ss, w->signum);
2774 sigdelset (&sigfd_set, w->signum); 3102 sigdelset (&sigfd_set, w->signum);
3103
2775 signalfd (sigfd, &sigfd_set, 0); 3104 signalfd (sigfd, &sigfd_set, 0);
2776 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3105 sigprocmask (SIG_UNBLOCK, &ss, 0);
2777 /*TODO: maybe unblock signal? */
2778 } 3106 }
2779 else 3107 else
2780#endif 3108#endif
2781 signal (w->signum, SIG_DFL); 3109 signal (w->signum, SIG_DFL);
2782 } 3110 }
2783 3111
2784 EV_FREQUENT_CHECK; 3112 EV_FREQUENT_CHECK;
2785} 3113}
2786 3114
3115#endif
3116
3117#if EV_CHILD_ENABLE
3118
2787void 3119void
2788ev_child_start (EV_P_ ev_child *w) 3120ev_child_start (EV_P_ ev_child *w)
2789{ 3121{
2790#if EV_MULTIPLICITY 3122#if EV_MULTIPLICITY
2791 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3123 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
… …
2794 return; 3126 return;
2795 3127
2796 EV_FREQUENT_CHECK; 3128 EV_FREQUENT_CHECK;
2797 3129
2798 ev_start (EV_A_ (W)w, 1); 3130 ev_start (EV_A_ (W)w, 1);
2799 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3131 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2800 3132
2801 EV_FREQUENT_CHECK; 3133 EV_FREQUENT_CHECK;
2802} 3134}
2803 3135
2804void 3136void
… …
2808 if (expect_false (!ev_is_active (w))) 3140 if (expect_false (!ev_is_active (w)))
2809 return; 3141 return;
2810 3142
2811 EV_FREQUENT_CHECK; 3143 EV_FREQUENT_CHECK;
2812 3144
2813 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3145 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2814 ev_stop (EV_A_ (W)w); 3146 ev_stop (EV_A_ (W)w);
2815 3147
2816 EV_FREQUENT_CHECK; 3148 EV_FREQUENT_CHECK;
2817} 3149}
3150
3151#endif
2818 3152
2819#if EV_STAT_ENABLE 3153#if EV_STAT_ENABLE
2820 3154
2821# ifdef _WIN32 3155# ifdef _WIN32
2822# undef lstat 3156# undef lstat
… …
2828#define MIN_STAT_INTERVAL 0.1074891 3162#define MIN_STAT_INTERVAL 0.1074891
2829 3163
2830static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3164static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2831 3165
2832#if EV_USE_INOTIFY 3166#if EV_USE_INOTIFY
2833# define EV_INOTIFY_BUFSIZE 8192 3167
3168/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3169# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2834 3170
2835static void noinline 3171static void noinline
2836infy_add (EV_P_ ev_stat *w) 3172infy_add (EV_P_ ev_stat *w)
2837{ 3173{
2838 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); 3174 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);
2839 3175
2840 if (w->wd < 0) 3176 if (w->wd >= 0)
3177 {
3178 struct statfs sfs;
3179
3180 /* now local changes will be tracked by inotify, but remote changes won't */
3181 /* unless the filesystem is known to be local, we therefore still poll */
3182 /* also do poll on <2.6.25, but with normal frequency */
3183
3184 if (!fs_2625)
3185 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3186 else if (!statfs (w->path, &sfs)
3187 && (sfs.f_type == 0x1373 /* devfs */
3188 || sfs.f_type == 0xEF53 /* ext2/3 */
3189 || sfs.f_type == 0x3153464a /* jfs */
3190 || sfs.f_type == 0x52654973 /* reiser3 */
3191 || sfs.f_type == 0x01021994 /* tempfs */
3192 || sfs.f_type == 0x58465342 /* xfs */))
3193 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3194 else
3195 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2841 { 3196 }
3197 else
3198 {
3199 /* can't use inotify, continue to stat */
2842 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3200 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2843 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2844 3201
2845 /* monitor some parent directory for speedup hints */ 3202 /* if path is not there, monitor some parent directory for speedup hints */
2846 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3203 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2847 /* but an efficiency issue only */ 3204 /* but an efficiency issue only */
2848 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3205 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2849 { 3206 {
2850 char path [4096]; 3207 char path [4096];
… …
2860 if (!pend || pend == path) 3217 if (!pend || pend == path)
2861 break; 3218 break;
2862 3219
2863 *pend = 0; 3220 *pend = 0;
2864 w->wd = inotify_add_watch (fs_fd, path, mask); 3221 w->wd = inotify_add_watch (fs_fd, path, mask);
2865 } 3222 }
2866 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3223 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2867 } 3224 }
2868 } 3225 }
2869 3226
2870 if (w->wd >= 0) 3227 if (w->wd >= 0)
2871 {
2872 struct statfs sfs;
2873
2874 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3228 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2875 3229
2876 /* now local changes will be tracked by inotify, but remote changes won't */ 3230 /* now re-arm timer, if required */
2877 /* unless the filesystem it known to be local, we therefore still poll */ 3231 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2878 /* also do poll on <2.6.25, but with normal frequency */
2879
2880 if (fs_2625 && !statfs (w->path, &sfs))
2881 if (sfs.f_type == 0x1373 /* devfs */
2882 || sfs.f_type == 0xEF53 /* ext2/3 */
2883 || sfs.f_type == 0x3153464a /* jfs */
2884 || sfs.f_type == 0x52654973 /* reiser3 */
2885 || sfs.f_type == 0x01021994 /* tempfs */
2886 || sfs.f_type == 0x58465342 /* xfs */)
2887 return;
2888
2889 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2890 ev_timer_again (EV_A_ &w->timer); 3232 ev_timer_again (EV_A_ &w->timer);
2891 } 3233 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2892} 3234}
2893 3235
2894static void noinline 3236static void noinline
2895infy_del (EV_P_ ev_stat *w) 3237infy_del (EV_P_ ev_stat *w)
2896{ 3238{
… …
2899 3241
2900 if (wd < 0) 3242 if (wd < 0)
2901 return; 3243 return;
2902 3244
2903 w->wd = -2; 3245 w->wd = -2;
2904 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3246 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2905 wlist_del (&fs_hash [slot].head, (WL)w); 3247 wlist_del (&fs_hash [slot].head, (WL)w);
2906 3248
2907 /* remove this watcher, if others are watching it, they will rearm */ 3249 /* remove this watcher, if others are watching it, they will rearm */
2908 inotify_rm_watch (fs_fd, wd); 3250 inotify_rm_watch (fs_fd, wd);
2909} 3251}
… …
2911static void noinline 3253static void noinline
2912infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3254infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2913{ 3255{
2914 if (slot < 0) 3256 if (slot < 0)
2915 /* overflow, need to check for all hash slots */ 3257 /* overflow, need to check for all hash slots */
2916 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3258 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2917 infy_wd (EV_A_ slot, wd, ev); 3259 infy_wd (EV_A_ slot, wd, ev);
2918 else 3260 else
2919 { 3261 {
2920 WL w_; 3262 WL w_;
2921 3263
2922 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3264 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2923 { 3265 {
2924 ev_stat *w = (ev_stat *)w_; 3266 ev_stat *w = (ev_stat *)w_;
2925 w_ = w_->next; /* lets us remove this watcher and all before it */ 3267 w_ = w_->next; /* lets us remove this watcher and all before it */
2926 3268
2927 if (w->wd == wd || wd == -1) 3269 if (w->wd == wd || wd == -1)
2928 { 3270 {
2929 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3271 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2930 { 3272 {
2931 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3273 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2932 w->wd = -1; 3274 w->wd = -1;
2933 infy_add (EV_A_ w); /* re-add, no matter what */ 3275 infy_add (EV_A_ w); /* re-add, no matter what */
2934 } 3276 }
2935 3277
2936 stat_timer_cb (EV_A_ &w->timer, 0); 3278 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2941 3283
2942static void 3284static void
2943infy_cb (EV_P_ ev_io *w, int revents) 3285infy_cb (EV_P_ ev_io *w, int revents)
2944{ 3286{
2945 char buf [EV_INOTIFY_BUFSIZE]; 3287 char buf [EV_INOTIFY_BUFSIZE];
2946 struct inotify_event *ev = (struct inotify_event *)buf;
2947 int ofs; 3288 int ofs;
2948 int len = read (fs_fd, buf, sizeof (buf)); 3289 int len = read (fs_fd, buf, sizeof (buf));
2949 3290
2950 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3291 for (ofs = 0; ofs < len; )
3292 {
3293 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2951 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3294 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3295 ofs += sizeof (struct inotify_event) + ev->len;
3296 }
2952} 3297}
2953 3298
2954inline_size void 3299inline_size void ecb_cold
2955check_2625 (EV_P) 3300ev_check_2625 (EV_P)
2956{ 3301{
2957 /* kernels < 2.6.25 are borked 3302 /* kernels < 2.6.25 are borked
2958 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3303 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2959 */ 3304 */
2960 struct utsname buf; 3305 if (ev_linux_version () < 0x020619)
2961 int major, minor, micro;
2962
2963 if (uname (&buf))
2964 return; 3306 return;
2965 3307
2966 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2967 return;
2968
2969 if (major < 2
2970 || (major == 2 && minor < 6)
2971 || (major == 2 && minor == 6 && micro < 25))
2972 return;
2973
2974 fs_2625 = 1; 3308 fs_2625 = 1;
3309}
3310
3311inline_size int
3312infy_newfd (void)
3313{
3314#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3315 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3316 if (fd >= 0)
3317 return fd;
3318#endif
3319 return inotify_init ();
2975} 3320}
2976 3321
2977inline_size void 3322inline_size void
2978infy_init (EV_P) 3323infy_init (EV_P)
2979{ 3324{
2980 if (fs_fd != -2) 3325 if (fs_fd != -2)
2981 return; 3326 return;
2982 3327
2983 fs_fd = -1; 3328 fs_fd = -1;
2984 3329
2985 check_2625 (EV_A); 3330 ev_check_2625 (EV_A);
2986 3331
2987 fs_fd = inotify_init (); 3332 fs_fd = infy_newfd ();
2988 3333
2989 if (fs_fd >= 0) 3334 if (fs_fd >= 0)
2990 { 3335 {
3336 fd_intern (fs_fd);
2991 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3337 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2992 ev_set_priority (&fs_w, EV_MAXPRI); 3338 ev_set_priority (&fs_w, EV_MAXPRI);
2993 ev_io_start (EV_A_ &fs_w); 3339 ev_io_start (EV_A_ &fs_w);
3340 ev_unref (EV_A);
2994 } 3341 }
2995} 3342}
2996 3343
2997inline_size void 3344inline_size void
2998infy_fork (EV_P) 3345infy_fork (EV_P)
… …
3000 int slot; 3347 int slot;
3001 3348
3002 if (fs_fd < 0) 3349 if (fs_fd < 0)
3003 return; 3350 return;
3004 3351
3352 ev_ref (EV_A);
3353 ev_io_stop (EV_A_ &fs_w);
3005 close (fs_fd); 3354 close (fs_fd);
3006 fs_fd = inotify_init (); 3355 fs_fd = infy_newfd ();
3007 3356
3357 if (fs_fd >= 0)
3358 {
3359 fd_intern (fs_fd);
3360 ev_io_set (&fs_w, fs_fd, EV_READ);
3361 ev_io_start (EV_A_ &fs_w);
3362 ev_unref (EV_A);
3363 }
3364
3008 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3365 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3009 { 3366 {
3010 WL w_ = fs_hash [slot].head; 3367 WL w_ = fs_hash [slot].head;
3011 fs_hash [slot].head = 0; 3368 fs_hash [slot].head = 0;
3012 3369
3013 while (w_) 3370 while (w_)
… …
3018 w->wd = -1; 3375 w->wd = -1;
3019 3376
3020 if (fs_fd >= 0) 3377 if (fs_fd >= 0)
3021 infy_add (EV_A_ w); /* re-add, no matter what */ 3378 infy_add (EV_A_ w); /* re-add, no matter what */
3022 else 3379 else
3380 {
3381 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3382 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3023 ev_timer_again (EV_A_ &w->timer); 3383 ev_timer_again (EV_A_ &w->timer);
3384 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3385 }
3024 } 3386 }
3025 } 3387 }
3026} 3388}
3027 3389
3028#endif 3390#endif
… …
3045static void noinline 3407static void noinline
3046stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3408stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3047{ 3409{
3048 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3410 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3049 3411
3050 /* we copy this here each the time so that */ 3412 ev_statdata prev = w->attr;
3051 /* prev has the old value when the callback gets invoked */
3052 w->prev = w->attr;
3053 ev_stat_stat (EV_A_ w); 3413 ev_stat_stat (EV_A_ w);
3054 3414
3055 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3415 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3056 if ( 3416 if (
3057 w->prev.st_dev != w->attr.st_dev 3417 prev.st_dev != w->attr.st_dev
3058 || w->prev.st_ino != w->attr.st_ino 3418 || prev.st_ino != w->attr.st_ino
3059 || w->prev.st_mode != w->attr.st_mode 3419 || prev.st_mode != w->attr.st_mode
3060 || w->prev.st_nlink != w->attr.st_nlink 3420 || prev.st_nlink != w->attr.st_nlink
3061 || w->prev.st_uid != w->attr.st_uid 3421 || prev.st_uid != w->attr.st_uid
3062 || w->prev.st_gid != w->attr.st_gid 3422 || prev.st_gid != w->attr.st_gid
3063 || w->prev.st_rdev != w->attr.st_rdev 3423 || prev.st_rdev != w->attr.st_rdev
3064 || w->prev.st_size != w->attr.st_size 3424 || prev.st_size != w->attr.st_size
3065 || w->prev.st_atime != w->attr.st_atime 3425 || prev.st_atime != w->attr.st_atime
3066 || w->prev.st_mtime != w->attr.st_mtime 3426 || prev.st_mtime != w->attr.st_mtime
3067 || w->prev.st_ctime != w->attr.st_ctime 3427 || prev.st_ctime != w->attr.st_ctime
3068 ) { 3428 ) {
3429 /* we only update w->prev on actual differences */
3430 /* in case we test more often than invoke the callback, */
3431 /* to ensure that prev is always different to attr */
3432 w->prev = prev;
3433
3069 #if EV_USE_INOTIFY 3434 #if EV_USE_INOTIFY
3070 if (fs_fd >= 0) 3435 if (fs_fd >= 0)
3071 { 3436 {
3072 infy_del (EV_A_ w); 3437 infy_del (EV_A_ w);
3073 infy_add (EV_A_ w); 3438 infy_add (EV_A_ w);
… …
3098 3463
3099 if (fs_fd >= 0) 3464 if (fs_fd >= 0)
3100 infy_add (EV_A_ w); 3465 infy_add (EV_A_ w);
3101 else 3466 else
3102#endif 3467#endif
3468 {
3103 ev_timer_again (EV_A_ &w->timer); 3469 ev_timer_again (EV_A_ &w->timer);
3470 ev_unref (EV_A);
3471 }
3104 3472
3105 ev_start (EV_A_ (W)w, 1); 3473 ev_start (EV_A_ (W)w, 1);
3106 3474
3107 EV_FREQUENT_CHECK; 3475 EV_FREQUENT_CHECK;
3108} 3476}
… …
3117 EV_FREQUENT_CHECK; 3485 EV_FREQUENT_CHECK;
3118 3486
3119#if EV_USE_INOTIFY 3487#if EV_USE_INOTIFY
3120 infy_del (EV_A_ w); 3488 infy_del (EV_A_ w);
3121#endif 3489#endif
3490
3491 if (ev_is_active (&w->timer))
3492 {
3493 ev_ref (EV_A);
3122 ev_timer_stop (EV_A_ &w->timer); 3494 ev_timer_stop (EV_A_ &w->timer);
3495 }
3123 3496
3124 ev_stop (EV_A_ (W)w); 3497 ev_stop (EV_A_ (W)w);
3125 3498
3126 EV_FREQUENT_CHECK; 3499 EV_FREQUENT_CHECK;
3127} 3500}
… …
3172 3545
3173 EV_FREQUENT_CHECK; 3546 EV_FREQUENT_CHECK;
3174} 3547}
3175#endif 3548#endif
3176 3549
3550#if EV_PREPARE_ENABLE
3177void 3551void
3178ev_prepare_start (EV_P_ ev_prepare *w) 3552ev_prepare_start (EV_P_ ev_prepare *w)
3179{ 3553{
3180 if (expect_false (ev_is_active (w))) 3554 if (expect_false (ev_is_active (w)))
3181 return; 3555 return;
… …
3207 3581
3208 ev_stop (EV_A_ (W)w); 3582 ev_stop (EV_A_ (W)w);
3209 3583
3210 EV_FREQUENT_CHECK; 3584 EV_FREQUENT_CHECK;
3211} 3585}
3586#endif
3212 3587
3588#if EV_CHECK_ENABLE
3213void 3589void
3214ev_check_start (EV_P_ ev_check *w) 3590ev_check_start (EV_P_ ev_check *w)
3215{ 3591{
3216 if (expect_false (ev_is_active (w))) 3592 if (expect_false (ev_is_active (w)))
3217 return; 3593 return;
… …
3243 3619
3244 ev_stop (EV_A_ (W)w); 3620 ev_stop (EV_A_ (W)w);
3245 3621
3246 EV_FREQUENT_CHECK; 3622 EV_FREQUENT_CHECK;
3247} 3623}
3624#endif
3248 3625
3249#if EV_EMBED_ENABLE 3626#if EV_EMBED_ENABLE
3250void noinline 3627void noinline
3251ev_embed_sweep (EV_P_ ev_embed *w) 3628ev_embed_sweep (EV_P_ ev_embed *w)
3252{ 3629{
3253 ev_loop (w->other, EVLOOP_NONBLOCK); 3630 ev_run (w->other, EVRUN_NOWAIT);
3254} 3631}
3255 3632
3256static void 3633static void
3257embed_io_cb (EV_P_ ev_io *io, int revents) 3634embed_io_cb (EV_P_ ev_io *io, int revents)
3258{ 3635{
3259 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3636 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3260 3637
3261 if (ev_cb (w)) 3638 if (ev_cb (w))
3262 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3639 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3263 else 3640 else
3264 ev_loop (w->other, EVLOOP_NONBLOCK); 3641 ev_run (w->other, EVRUN_NOWAIT);
3265} 3642}
3266 3643
3267static void 3644static void
3268embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3645embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3269{ 3646{
… …
3273 EV_P = w->other; 3650 EV_P = w->other;
3274 3651
3275 while (fdchangecnt) 3652 while (fdchangecnt)
3276 { 3653 {
3277 fd_reify (EV_A); 3654 fd_reify (EV_A);
3278 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3655 ev_run (EV_A_ EVRUN_NOWAIT);
3279 } 3656 }
3280 } 3657 }
3281} 3658}
3282 3659
3283static void 3660static void
… …
3289 3666
3290 { 3667 {
3291 EV_P = w->other; 3668 EV_P = w->other;
3292 3669
3293 ev_loop_fork (EV_A); 3670 ev_loop_fork (EV_A);
3294 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3671 ev_run (EV_A_ EVRUN_NOWAIT);
3295 } 3672 }
3296 3673
3297 ev_embed_start (EV_A_ w); 3674 ev_embed_start (EV_A_ w);
3298} 3675}
3299 3676
… …
3347 3724
3348 ev_io_stop (EV_A_ &w->io); 3725 ev_io_stop (EV_A_ &w->io);
3349 ev_prepare_stop (EV_A_ &w->prepare); 3726 ev_prepare_stop (EV_A_ &w->prepare);
3350 ev_fork_stop (EV_A_ &w->fork); 3727 ev_fork_stop (EV_A_ &w->fork);
3351 3728
3729 ev_stop (EV_A_ (W)w);
3730
3352 EV_FREQUENT_CHECK; 3731 EV_FREQUENT_CHECK;
3353} 3732}
3354#endif 3733#endif
3355 3734
3356#if EV_FORK_ENABLE 3735#if EV_FORK_ENABLE
… …
3389 3768
3390 EV_FREQUENT_CHECK; 3769 EV_FREQUENT_CHECK;
3391} 3770}
3392#endif 3771#endif
3393 3772
3773#if EV_CLEANUP_ENABLE
3774void
3775ev_cleanup_start (EV_P_ ev_cleanup *w)
3776{
3777 if (expect_false (ev_is_active (w)))
3778 return;
3779
3780 EV_FREQUENT_CHECK;
3781
3782 ev_start (EV_A_ (W)w, ++cleanupcnt);
3783 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3784 cleanups [cleanupcnt - 1] = w;
3785
3786 /* cleanup watchers should never keep a refcount on the loop */
3787 ev_unref (EV_A);
3788 EV_FREQUENT_CHECK;
3789}
3790
3791void
3792ev_cleanup_stop (EV_P_ ev_cleanup *w)
3793{
3794 clear_pending (EV_A_ (W)w);
3795 if (expect_false (!ev_is_active (w)))
3796 return;
3797
3798 EV_FREQUENT_CHECK;
3799 ev_ref (EV_A);
3800
3801 {
3802 int active = ev_active (w);
3803
3804 cleanups [active - 1] = cleanups [--cleanupcnt];
3805 ev_active (cleanups [active - 1]) = active;
3806 }
3807
3808 ev_stop (EV_A_ (W)w);
3809
3810 EV_FREQUENT_CHECK;
3811}
3812#endif
3813
3394#if EV_ASYNC_ENABLE 3814#if EV_ASYNC_ENABLE
3395void 3815void
3396ev_async_start (EV_P_ ev_async *w) 3816ev_async_start (EV_P_ ev_async *w)
3397{ 3817{
3398 if (expect_false (ev_is_active (w))) 3818 if (expect_false (ev_is_active (w)))
3399 return; 3819 return;
3820
3821 w->sent = 0;
3400 3822
3401 evpipe_init (EV_A); 3823 evpipe_init (EV_A);
3402 3824
3403 EV_FREQUENT_CHECK; 3825 EV_FREQUENT_CHECK;
3404 3826
… …
3482{ 3904{
3483 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3905 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3484 3906
3485 if (expect_false (!once)) 3907 if (expect_false (!once))
3486 { 3908 {
3487 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3909 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3488 return; 3910 return;
3489 } 3911 }
3490 3912
3491 once->cb = cb; 3913 once->cb = cb;
3492 once->arg = arg; 3914 once->arg = arg;
… …
3507} 3929}
3508 3930
3509/*****************************************************************************/ 3931/*****************************************************************************/
3510 3932
3511#if EV_WALK_ENABLE 3933#if EV_WALK_ENABLE
3512void 3934void ecb_cold
3513ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 3935ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3514{ 3936{
3515 int i, j; 3937 int i, j;
3516 ev_watcher_list *wl, *wn; 3938 ev_watcher_list *wl, *wn;
3517 3939
… …
3579 if (types & EV_ASYNC) 4001 if (types & EV_ASYNC)
3580 for (i = asynccnt; i--; ) 4002 for (i = asynccnt; i--; )
3581 cb (EV_A_ EV_ASYNC, asyncs [i]); 4003 cb (EV_A_ EV_ASYNC, asyncs [i]);
3582#endif 4004#endif
3583 4005
4006#if EV_PREPARE_ENABLE
3584 if (types & EV_PREPARE) 4007 if (types & EV_PREPARE)
3585 for (i = preparecnt; i--; ) 4008 for (i = preparecnt; i--; )
3586#if EV_EMBED_ENABLE 4009# if EV_EMBED_ENABLE
3587 if (ev_cb (prepares [i]) != embed_prepare_cb) 4010 if (ev_cb (prepares [i]) != embed_prepare_cb)
3588#endif 4011# endif
3589 cb (EV_A_ EV_PREPARE, prepares [i]); 4012 cb (EV_A_ EV_PREPARE, prepares [i]);
4013#endif
3590 4014
4015#if EV_CHECK_ENABLE
3591 if (types & EV_CHECK) 4016 if (types & EV_CHECK)
3592 for (i = checkcnt; i--; ) 4017 for (i = checkcnt; i--; )
3593 cb (EV_A_ EV_CHECK, checks [i]); 4018 cb (EV_A_ EV_CHECK, checks [i]);
4019#endif
3594 4020
4021#if EV_SIGNAL_ENABLE
3595 if (types & EV_SIGNAL) 4022 if (types & EV_SIGNAL)
3596 for (i = 0; i < EV_NSIG - 1; ++i) 4023 for (i = 0; i < EV_NSIG - 1; ++i)
3597 for (wl = signals [i].head; wl; ) 4024 for (wl = signals [i].head; wl; )
3598 { 4025 {
3599 wn = wl->next; 4026 wn = wl->next;
3600 cb (EV_A_ EV_SIGNAL, wl); 4027 cb (EV_A_ EV_SIGNAL, wl);
3601 wl = wn; 4028 wl = wn;
3602 } 4029 }
4030#endif
3603 4031
4032#if EV_CHILD_ENABLE
3604 if (types & EV_CHILD) 4033 if (types & EV_CHILD)
3605 for (i = EV_PID_HASHSIZE; i--; ) 4034 for (i = (EV_PID_HASHSIZE); i--; )
3606 for (wl = childs [i]; wl; ) 4035 for (wl = childs [i]; wl; )
3607 { 4036 {
3608 wn = wl->next; 4037 wn = wl->next;
3609 cb (EV_A_ EV_CHILD, wl); 4038 cb (EV_A_ EV_CHILD, wl);
3610 wl = wn; 4039 wl = wn;
3611 } 4040 }
4041#endif
3612/* EV_STAT 0x00001000 /* stat data changed */ 4042/* EV_STAT 0x00001000 /* stat data changed */
3613/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4043/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3614} 4044}
3615#endif 4045#endif
3616 4046
3617#if EV_MULTIPLICITY 4047#if EV_MULTIPLICITY
3618 #include "ev_wrap.h" 4048 #include "ev_wrap.h"
3619#endif 4049#endif
3620 4050
3621#ifdef __cplusplus 4051EV_CPP(})
3622}
3623#endif
3624 4052

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