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Comparing libev/ev.c (file contents):
Revision 1.316 by root, Fri Sep 18 21:02:12 2009 UTC vs.
Revision 1.381 by root, Mon Jun 27 21:29:35 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__ >= 7)) 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
398extern "C" {
399# endif
400int eventfd (unsigned int initval, int flags); 423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
401# ifdef __cplusplus
402}
403# endif
404#endif 424#endif
405 425
406#if EV_USE_SIGNALFD 426#if EV_USE_SIGNALFD
407/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
408# include <stdint.h> 428# include <stdint.h>
… …
414# define SFD_CLOEXEC O_CLOEXEC 434# define SFD_CLOEXEC O_CLOEXEC
415# else 435# else
416# define SFD_CLOEXEC 02000000 436# define SFD_CLOEXEC 02000000
417# endif 437# endif
418# endif 438# endif
419# ifdef __cplusplus
420extern "C" {
421# endif
422int signalfd (int fd, const sigset_t *mask, int flags); 439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
423 440
424struct signalfd_siginfo 441struct signalfd_siginfo
425{ 442{
426 uint32_t ssi_signo; 443 uint32_t ssi_signo;
427 char pad[128 - sizeof (uint32_t)]; 444 char pad[128 - sizeof (uint32_t)];
428}; 445};
429# ifdef __cplusplus
430}
431# endif 446#endif
432#endif
433
434 447
435/**/ 448/**/
436 449
437#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
438# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
439#else 452#else
440# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
441#endif 454#endif
442 455
443/* 456/*
444 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
445 * It is added to ev_rt_now when scheduling periodics
446 * to ensure progress, time-wise, even when rounding
447 * errors are against us.
448 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
449 * Better solutions welcome.
450 */ 459 */
451#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 */
452 462
453#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) */
454#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) */
455 465
456#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)
457# 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)
458# 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
459#else 493#else
460# define expect(expr,value) (expr) 494 #define ecb_inline static
461# define noinline
462# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
463# define inline
464# endif 495#endif
465#endif
466 496
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. */
467#define expect_false(expr) expect ((expr) != 0, 0) 528#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
468#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
469#define inline_size static inline 536#define inline_size ecb_inline
470 537
471#if EV_MINIMAL 538#if EV_FEATURE_CODE
539# define inline_speed ecb_inline
540#else
472# define inline_speed static noinline 541# define inline_speed static noinline
473#else
474# define inline_speed static inline
475#endif 542#endif
476 543
477#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 544#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
478 545
479#if EV_MINPRI == EV_MAXPRI 546#if EV_MINPRI == EV_MAXPRI
… …
492#define ev_active(w) ((W)(w))->active 559#define ev_active(w) ((W)(w))->active
493#define ev_at(w) ((WT)(w))->at 560#define ev_at(w) ((WT)(w))->at
494 561
495#if EV_USE_REALTIME 562#if EV_USE_REALTIME
496/* 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 */
497/* giving it a reasonably high chance of working on typical architetcures */ 564/* giving it a reasonably high chance of working on typical architectures */
498static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 565static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
499#endif 566#endif
500 567
501#if EV_USE_MONOTONIC 568#if EV_USE_MONOTONIC
502static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 569static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
504 571
505#ifndef EV_FD_TO_WIN32_HANDLE 572#ifndef EV_FD_TO_WIN32_HANDLE
506# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) 573# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
507#endif 574#endif
508#ifndef EV_WIN32_HANDLE_TO_FD 575#ifndef EV_WIN32_HANDLE_TO_FD
509# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) 576# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
510#endif 577#endif
511#ifndef EV_WIN32_CLOSE_FD 578#ifndef EV_WIN32_CLOSE_FD
512# define EV_WIN32_CLOSE_FD(fd) close (fd) 579# define EV_WIN32_CLOSE_FD(fd) close (fd)
513#endif 580#endif
514 581
… …
516# include "ev_win32.c" 583# include "ev_win32.c"
517#endif 584#endif
518 585
519/*****************************************************************************/ 586/*****************************************************************************/
520 587
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
521static void (*syserr_cb)(const char *msg); 686static void (*syserr_cb)(const char *msg);
522 687
523void 688void ecb_cold
524ev_set_syserr_cb (void (*cb)(const char *msg)) 689ev_set_syserr_cb (void (*cb)(const char *msg))
525{ 690{
526 syserr_cb = cb; 691 syserr_cb = cb;
527} 692}
528 693
529static void noinline 694static void noinline ecb_cold
530ev_syserr (const char *msg) 695ev_syserr (const char *msg)
531{ 696{
532 if (!msg) 697 if (!msg)
533 msg = "(libev) system error"; 698 msg = "(libev) system error";
534 699
535 if (syserr_cb) 700 if (syserr_cb)
536 syserr_cb (msg); 701 syserr_cb (msg);
537 else 702 else
538 { 703 {
704#if EV_AVOID_STDIO
705 ev_printerr (msg);
706 ev_printerr (": ");
707 ev_printerr (strerror (errno));
708 ev_printerr ("\n");
709#else
539 perror (msg); 710 perror (msg);
711#endif
540 abort (); 712 abort ();
541 } 713 }
542} 714}
543 715
544static void * 716static void *
545ev_realloc_emul (void *ptr, long size) 717ev_realloc_emul (void *ptr, long size)
546{ 718{
719#if __GLIBC__
720 return realloc (ptr, size);
721#else
547 /* some systems, notably openbsd and darwin, fail to properly 722 /* some systems, notably openbsd and darwin, fail to properly
548 * 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
549 * the single unix specification, so work around them here. 724 * the single unix specification, so work around them here.
550 */ 725 */
551 726
552 if (size) 727 if (size)
553 return realloc (ptr, size); 728 return realloc (ptr, size);
554 729
555 free (ptr); 730 free (ptr);
556 return 0; 731 return 0;
732#endif
557} 733}
558 734
559static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 735static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
560 736
561void 737void ecb_cold
562ev_set_allocator (void *(*cb)(void *ptr, long size)) 738ev_set_allocator (void *(*cb)(void *ptr, long size))
563{ 739{
564 alloc = cb; 740 alloc = cb;
565} 741}
566 742
… …
569{ 745{
570 ptr = alloc (ptr, size); 746 ptr = alloc (ptr, size);
571 747
572 if (!ptr && size) 748 if (!ptr && size)
573 { 749 {
750#if EV_AVOID_STDIO
751 ev_printerr ("(libev) memory allocation failed, aborting.\n");
752#else
574 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 753 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
754#endif
575 abort (); 755 abort ();
576 } 756 }
577 757
578 return ptr; 758 return ptr;
579} 759}
… …
595 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 */
596 unsigned char unused; 776 unsigned char unused;
597#if EV_USE_EPOLL 777#if EV_USE_EPOLL
598 unsigned int egen; /* generation counter to counter epoll bugs */ 778 unsigned int egen; /* generation counter to counter epoll bugs */
599#endif 779#endif
600#if EV_SELECT_IS_WINSOCKET 780#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
601 SOCKET handle; 781 SOCKET handle;
782#endif
783#if EV_USE_IOCP
784 OVERLAPPED or, ow;
602#endif 785#endif
603} ANFD; 786} ANFD;
604 787
605/* stores the pending event set for a given watcher */ 788/* stores the pending event set for a given watcher */
606typedef struct 789typedef struct
… …
661 844
662 static int ev_default_loop_ptr; 845 static int ev_default_loop_ptr;
663 846
664#endif 847#endif
665 848
666#if EV_MINIMAL < 2 849#if EV_FEATURE_API
667# 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)
668# 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)
669# define EV_INVOKE_PENDING invoke_cb (EV_A) 852# define EV_INVOKE_PENDING invoke_cb (EV_A)
670#else 853#else
671# define EV_RELEASE_CB (void)0 854# define EV_RELEASE_CB (void)0
672# define EV_ACQUIRE_CB (void)0 855# define EV_ACQUIRE_CB (void)0
673# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 856# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
674#endif 857#endif
675 858
676#define EVUNLOOP_RECURSE 0x80 859#define EVBREAK_RECURSE 0x80
677 860
678/*****************************************************************************/ 861/*****************************************************************************/
679 862
680#ifndef EV_HAVE_EV_TIME 863#ifndef EV_HAVE_EV_TIME
681ev_tstamp 864ev_tstamp
… …
725 if (delay > 0.) 908 if (delay > 0.)
726 { 909 {
727#if EV_USE_NANOSLEEP 910#if EV_USE_NANOSLEEP
728 struct timespec ts; 911 struct timespec ts;
729 912
730 ts.tv_sec = (time_t)delay; 913 EV_TS_SET (ts, delay);
731 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
732
733 nanosleep (&ts, 0); 914 nanosleep (&ts, 0);
734#elif defined(_WIN32) 915#elif defined(_WIN32)
735 Sleep ((unsigned long)(delay * 1e3)); 916 Sleep ((unsigned long)(delay * 1e3));
736#else 917#else
737 struct timeval tv; 918 struct timeval tv;
738 919
739 tv.tv_sec = (time_t)delay;
740 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
741
742 /* 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 */
743 /* something not guaranteed by newer posix versions, but guaranteed */ 921 /* something not guaranteed by newer posix versions, but guaranteed */
744 /* by older ones */ 922 /* by older ones */
923 EV_TV_SET (tv, delay);
745 select (0, 0, 0, 0, &tv); 924 select (0, 0, 0, 0, &tv);
746#endif 925#endif
747 } 926 }
748} 927}
749 928
750/*****************************************************************************/ 929/*****************************************************************************/
751 930
752#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 */
753 932
754/* find a suitable new size for the given array, */ 933/* find a suitable new size for the given array, */
755/* hopefully by rounding to a ncie-to-malloc size */ 934/* hopefully by rounding to a nice-to-malloc size */
756inline_size int 935inline_size int
757array_nextsize (int elem, int cur, int cnt) 936array_nextsize (int elem, int cur, int cnt)
758{ 937{
759 int ncur = cur + 1; 938 int ncur = cur + 1;
760 939
… …
772 } 951 }
773 952
774 return ncur; 953 return ncur;
775} 954}
776 955
777static noinline void * 956static void * noinline ecb_cold
778array_realloc (int elem, void *base, int *cur, int cnt) 957array_realloc (int elem, void *base, int *cur, int cnt)
779{ 958{
780 *cur = array_nextsize (elem, *cur, cnt); 959 *cur = array_nextsize (elem, *cur, cnt);
781 return ev_realloc (base, elem * *cur); 960 return ev_realloc (base, elem * *cur);
782} 961}
… …
856} 1035}
857 1036
858/*****************************************************************************/ 1037/*****************************************************************************/
859 1038
860inline_speed void 1039inline_speed void
861fd_event_nc (EV_P_ int fd, int revents) 1040fd_event_nocheck (EV_P_ int fd, int revents)
862{ 1041{
863 ANFD *anfd = anfds + fd; 1042 ANFD *anfd = anfds + fd;
864 ev_io *w; 1043 ev_io *w;
865 1044
866 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)
… …
878fd_event (EV_P_ int fd, int revents) 1057fd_event (EV_P_ int fd, int revents)
879{ 1058{
880 ANFD *anfd = anfds + fd; 1059 ANFD *anfd = anfds + fd;
881 1060
882 if (expect_true (!anfd->reify)) 1061 if (expect_true (!anfd->reify))
883 fd_event_nc (EV_A_ fd, revents); 1062 fd_event_nocheck (EV_A_ fd, revents);
884} 1063}
885 1064
886void 1065void
887ev_feed_fd_event (EV_P_ int fd, int revents) 1066ev_feed_fd_event (EV_P_ int fd, int revents)
888{ 1067{
889 if (fd >= 0 && fd < anfdmax) 1068 if (fd >= 0 && fd < anfdmax)
890 fd_event_nc (EV_A_ fd, revents); 1069 fd_event_nocheck (EV_A_ fd, revents);
891} 1070}
892 1071
893/* make sure the external fd watch events are in-sync */ 1072/* make sure the external fd watch events are in-sync */
894/* with the kernel/libev internal state */ 1073/* with the kernel/libev internal state */
895inline_size void 1074inline_size void
896fd_reify (EV_P) 1075fd_reify (EV_P)
897{ 1076{
898 int i; 1077 int i;
899 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
900 for (i = 0; i < fdchangecnt; ++i) 1104 for (i = 0; i < fdchangecnt; ++i)
901 { 1105 {
902 int fd = fdchanges [i]; 1106 int fd = fdchanges [i];
903 ANFD *anfd = anfds + fd; 1107 ANFD *anfd = anfds + fd;
904 ev_io *w; 1108 ev_io *w;
905 1109
906 unsigned char events = 0; 1110 unsigned char o_events = anfd->events;
1111 unsigned char o_reify = anfd->reify;
907 1112
908 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1113 anfd->reify = 0;
909 events |= (unsigned char)w->events;
910 1114
911#if EV_SELECT_IS_WINSOCKET 1115 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
912 if (events)
913 { 1116 {
914 unsigned long arg; 1117 anfd->events = 0;
915 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1118
916 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 |= */
917 } 1124 }
918#endif
919 1125
920 { 1126 if (o_reify & EV__IOFDSET)
921 unsigned char o_events = anfd->events;
922 unsigned char o_reify = anfd->reify;
923
924 anfd->reify = 0;
925 anfd->events = events;
926
927 if (o_events != events || o_reify & EV__IOFDSET)
928 backend_modify (EV_A_ fd, o_events, events); 1127 backend_modify (EV_A_ fd, o_events, anfd->events);
929 }
930 } 1128 }
931 1129
932 fdchangecnt = 0; 1130 fdchangecnt = 0;
933} 1131}
934 1132
… …
946 fdchanges [fdchangecnt - 1] = fd; 1144 fdchanges [fdchangecnt - 1] = fd;
947 } 1145 }
948} 1146}
949 1147
950/* 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 */
951inline_speed void 1149inline_speed void ecb_cold
952fd_kill (EV_P_ int fd) 1150fd_kill (EV_P_ int fd)
953{ 1151{
954 ev_io *w; 1152 ev_io *w;
955 1153
956 while ((w = (ev_io *)anfds [fd].head)) 1154 while ((w = (ev_io *)anfds [fd].head))
… …
958 ev_io_stop (EV_A_ w); 1156 ev_io_stop (EV_A_ w);
959 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);
960 } 1158 }
961} 1159}
962 1160
963/* check whether the given fd is atcually valid, for error recovery */ 1161/* check whether the given fd is actually valid, for error recovery */
964inline_size int 1162inline_size int ecb_cold
965fd_valid (int fd) 1163fd_valid (int fd)
966{ 1164{
967#ifdef _WIN32 1165#ifdef _WIN32
968 return _get_osfhandle (fd) != -1; 1166 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
969#else 1167#else
970 return fcntl (fd, F_GETFD) != -1; 1168 return fcntl (fd, F_GETFD) != -1;
971#endif 1169#endif
972} 1170}
973 1171
974/* called on EBADF to verify fds */ 1172/* called on EBADF to verify fds */
975static void noinline 1173static void noinline ecb_cold
976fd_ebadf (EV_P) 1174fd_ebadf (EV_P)
977{ 1175{
978 int fd; 1176 int fd;
979 1177
980 for (fd = 0; fd < anfdmax; ++fd) 1178 for (fd = 0; fd < anfdmax; ++fd)
… …
982 if (!fd_valid (fd) && errno == EBADF) 1180 if (!fd_valid (fd) && errno == EBADF)
983 fd_kill (EV_A_ fd); 1181 fd_kill (EV_A_ fd);
984} 1182}
985 1183
986/* 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 */
987static void noinline 1185static void noinline ecb_cold
988fd_enomem (EV_P) 1186fd_enomem (EV_P)
989{ 1187{
990 int fd; 1188 int fd;
991 1189
992 for (fd = anfdmax; fd--; ) 1190 for (fd = anfdmax; fd--; )
… …
1010 anfds [fd].emask = 0; 1208 anfds [fd].emask = 0;
1011 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1209 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1012 } 1210 }
1013} 1211}
1014 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
1015/*****************************************************************************/ 1227/*****************************************************************************/
1016 1228
1017/* 1229/*
1018 * 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
1019 * 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
1020 * the branching factor of the d-tree. 1232 * the branching factor of the d-tree.
1021 */ 1233 */
1022 1234
1023/* 1235/*
… …
1171 1383
1172static ANSIG signals [EV_NSIG - 1]; 1384static ANSIG signals [EV_NSIG - 1];
1173 1385
1174/*****************************************************************************/ 1386/*****************************************************************************/
1175 1387
1176/* used to prepare libev internal fd's */ 1388#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1177/* this is not fork-safe */
1178inline_speed void
1179fd_intern (int fd)
1180{
1181#ifdef _WIN32
1182 unsigned long arg = 1;
1183 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1184#else
1185 fcntl (fd, F_SETFD, FD_CLOEXEC);
1186 fcntl (fd, F_SETFL, O_NONBLOCK);
1187#endif
1188}
1189 1389
1190static void noinline 1390static void noinline ecb_cold
1191evpipe_init (EV_P) 1391evpipe_init (EV_P)
1192{ 1392{
1193 if (!ev_is_active (&pipe_w)) 1393 if (!ev_is_active (&pipe_w))
1194 { 1394 {
1195#if EV_USE_EVENTFD 1395# if EV_USE_EVENTFD
1196 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1396 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1197 if (evfd < 0 && errno == EINVAL) 1397 if (evfd < 0 && errno == EINVAL)
1198 evfd = eventfd (0, 0); 1398 evfd = eventfd (0, 0);
1199 1399
1200 if (evfd >= 0) 1400 if (evfd >= 0)
… …
1202 evpipe [0] = -1; 1402 evpipe [0] = -1;
1203 fd_intern (evfd); /* doing it twice doesn't hurt */ 1403 fd_intern (evfd); /* doing it twice doesn't hurt */
1204 ev_io_set (&pipe_w, evfd, EV_READ); 1404 ev_io_set (&pipe_w, evfd, EV_READ);
1205 } 1405 }
1206 else 1406 else
1207#endif 1407# endif
1208 { 1408 {
1209 while (pipe (evpipe)) 1409 while (pipe (evpipe))
1210 ev_syserr ("(libev) error creating signal/async pipe"); 1410 ev_syserr ("(libev) error creating signal/async pipe");
1211 1411
1212 fd_intern (evpipe [0]); 1412 fd_intern (evpipe [0]);
… …
1217 ev_io_start (EV_A_ &pipe_w); 1417 ev_io_start (EV_A_ &pipe_w);
1218 ev_unref (EV_A); /* watcher should not keep loop alive */ 1418 ev_unref (EV_A); /* watcher should not keep loop alive */
1219 } 1419 }
1220} 1420}
1221 1421
1222inline_size void 1422inline_speed void
1223evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1423evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1224{ 1424{
1225 if (!*flag) 1425 if (!*flag)
1226 { 1426 {
1227 int old_errno = errno; /* save errno because write might clobber it */
1228
1229 *flag = 1; 1427 *flag = 1;
1230 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
1231#if EV_USE_EVENTFD 1439#if EV_USE_EVENTFD
1232 if (evfd >= 0) 1440 if (evfd >= 0)
1233 { 1441 {
1234 uint64_t counter = 1; 1442 uint64_t counter = 1;
1235 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;
1236 } 1457 }
1237 else
1238#endif
1239 write (evpipe [1], &old_errno, 1);
1240
1241 errno = old_errno;
1242 } 1458 }
1243} 1459}
1244 1460
1245/* called whenever the libev signal pipe */ 1461/* called whenever the libev signal pipe */
1246/* got some events (signal, async) */ 1462/* got some events (signal, async) */
1247static void 1463static void
1248pipecb (EV_P_ ev_io *iow, int revents) 1464pipecb (EV_P_ ev_io *iow, int revents)
1249{ 1465{
1250 int i; 1466 int i;
1251 1467
1468 if (revents & EV_READ)
1469 {
1252#if EV_USE_EVENTFD 1470#if EV_USE_EVENTFD
1253 if (evfd >= 0) 1471 if (evfd >= 0)
1254 { 1472 {
1255 uint64_t counter; 1473 uint64_t counter;
1256 read (evfd, &counter, sizeof (uint64_t)); 1474 read (evfd, &counter, sizeof (uint64_t));
1257 } 1475 }
1258 else 1476 else
1259#endif 1477#endif
1260 { 1478 {
1261 char dummy; 1479 char dummy;
1480 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1262 read (evpipe [0], &dummy, 1); 1481 read (evpipe [0], &dummy, 1);
1482 }
1263 } 1483 }
1264 1484
1485 pipe_write_skipped = 0;
1486
1487#if EV_SIGNAL_ENABLE
1265 if (sig_pending) 1488 if (sig_pending)
1266 { 1489 {
1267 sig_pending = 0; 1490 sig_pending = 0;
1268 1491
1269 for (i = EV_NSIG - 1; i--; ) 1492 for (i = EV_NSIG - 1; i--; )
1270 if (expect_false (signals [i].pending)) 1493 if (expect_false (signals [i].pending))
1271 ev_feed_signal_event (EV_A_ i + 1); 1494 ev_feed_signal_event (EV_A_ i + 1);
1272 } 1495 }
1496#endif
1273 1497
1274#if EV_ASYNC_ENABLE 1498#if EV_ASYNC_ENABLE
1275 if (async_pending) 1499 if (async_pending)
1276 { 1500 {
1277 async_pending = 0; 1501 async_pending = 0;
… …
1286#endif 1510#endif
1287} 1511}
1288 1512
1289/*****************************************************************************/ 1513/*****************************************************************************/
1290 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
1291static void 1532static void
1292ev_sighandler (int signum) 1533ev_sighandler (int signum)
1293{ 1534{
1294#if EV_MULTIPLICITY
1295 EV_P = signals [signum - 1].loop;
1296#endif
1297
1298#if _WIN32 1535#ifdef _WIN32
1299 signal (signum, ev_sighandler); 1536 signal (signum, ev_sighandler);
1300#endif 1537#endif
1301 1538
1302 signals [signum - 1].pending = 1; 1539 ev_feed_signal (signum);
1303 evpipe_write (EV_A_ &sig_pending);
1304} 1540}
1305 1541
1306void noinline 1542void noinline
1307ev_feed_signal_event (EV_P_ int signum) 1543ev_feed_signal_event (EV_P_ int signum)
1308{ 1544{
… …
1345 break; 1581 break;
1346 } 1582 }
1347} 1583}
1348#endif 1584#endif
1349 1585
1586#endif
1587
1350/*****************************************************************************/ 1588/*****************************************************************************/
1351 1589
1590#if EV_CHILD_ENABLE
1352static WL childs [EV_PID_HASHSIZE]; 1591static WL childs [EV_PID_HASHSIZE];
1353
1354#ifndef _WIN32
1355 1592
1356static ev_signal childev; 1593static ev_signal childev;
1357 1594
1358#ifndef WIFCONTINUED 1595#ifndef WIFCONTINUED
1359# define WIFCONTINUED(status) 0 1596# define WIFCONTINUED(status) 0
… …
1364child_reap (EV_P_ int chain, int pid, int status) 1601child_reap (EV_P_ int chain, int pid, int status)
1365{ 1602{
1366 ev_child *w; 1603 ev_child *w;
1367 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1604 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1368 1605
1369 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)
1370 { 1607 {
1371 if ((w->pid == pid || !w->pid) 1608 if ((w->pid == pid || !w->pid)
1372 && (!traced || (w->flags & 1))) 1609 && (!traced || (w->flags & 1)))
1373 { 1610 {
1374 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 */
… …
1399 /* 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 */
1400 /* 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 */
1401 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1638 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1402 1639
1403 child_reap (EV_A_ pid, pid, status); 1640 child_reap (EV_A_ pid, pid, status);
1404 if (EV_PID_HASHSIZE > 1) 1641 if ((EV_PID_HASHSIZE) > 1)
1405 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 */
1406} 1643}
1407 1644
1408#endif 1645#endif
1409 1646
1410/*****************************************************************************/ 1647/*****************************************************************************/
1411 1648
1649#if EV_USE_IOCP
1650# include "ev_iocp.c"
1651#endif
1412#if EV_USE_PORT 1652#if EV_USE_PORT
1413# include "ev_port.c" 1653# include "ev_port.c"
1414#endif 1654#endif
1415#if EV_USE_KQUEUE 1655#if EV_USE_KQUEUE
1416# include "ev_kqueue.c" 1656# include "ev_kqueue.c"
… …
1423#endif 1663#endif
1424#if EV_USE_SELECT 1664#if EV_USE_SELECT
1425# include "ev_select.c" 1665# include "ev_select.c"
1426#endif 1666#endif
1427 1667
1428int 1668int ecb_cold
1429ev_version_major (void) 1669ev_version_major (void)
1430{ 1670{
1431 return EV_VERSION_MAJOR; 1671 return EV_VERSION_MAJOR;
1432} 1672}
1433 1673
1434int 1674int ecb_cold
1435ev_version_minor (void) 1675ev_version_minor (void)
1436{ 1676{
1437 return EV_VERSION_MINOR; 1677 return EV_VERSION_MINOR;
1438} 1678}
1439 1679
1440/* 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 */
1441int inline_size 1681int inline_size ecb_cold
1442enable_secure (void) 1682enable_secure (void)
1443{ 1683{
1444#ifdef _WIN32 1684#ifdef _WIN32
1445 return 0; 1685 return 0;
1446#else 1686#else
1447 return getuid () != geteuid () 1687 return getuid () != geteuid ()
1448 || getgid () != getegid (); 1688 || getgid () != getegid ();
1449#endif 1689#endif
1450} 1690}
1451 1691
1452unsigned int 1692unsigned int ecb_cold
1453ev_supported_backends (void) 1693ev_supported_backends (void)
1454{ 1694{
1455 unsigned int flags = 0; 1695 unsigned int flags = 0;
1456 1696
1457 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1697 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1461 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1701 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1462 1702
1463 return flags; 1703 return flags;
1464} 1704}
1465 1705
1466unsigned int 1706unsigned int ecb_cold
1467ev_recommended_backends (void) 1707ev_recommended_backends (void)
1468{ 1708{
1469 unsigned int flags = ev_supported_backends (); 1709 unsigned int flags = ev_supported_backends ();
1470 1710
1471#ifndef __NetBSD__ 1711#ifndef __NetBSD__
… …
1476#ifdef __APPLE__ 1716#ifdef __APPLE__
1477 /* only select works correctly on that "unix-certified" platform */ 1717 /* only select works correctly on that "unix-certified" platform */
1478 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1718 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1479 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 */
1480#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
1481 1724
1482 return flags; 1725 return flags;
1483} 1726}
1484 1727
1485unsigned int 1728unsigned int ecb_cold
1486ev_embeddable_backends (void) 1729ev_embeddable_backends (void)
1487{ 1730{
1488 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1731 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1489 1732
1490 /* 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 */
1491 /* please fix it and tell me how to detect the fix */ 1734 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1492 flags &= ~EVBACKEND_EPOLL; 1735 flags &= ~EVBACKEND_EPOLL;
1493 1736
1494 return flags; 1737 return flags;
1495} 1738}
1496 1739
1497unsigned int 1740unsigned int
1498ev_backend (EV_P) 1741ev_backend (EV_P)
1499{ 1742{
1500 return backend; 1743 return backend;
1501} 1744}
1502 1745
1503#if EV_MINIMAL < 2 1746#if EV_FEATURE_API
1504unsigned int 1747unsigned int
1505ev_loop_count (EV_P) 1748ev_iteration (EV_P)
1506{ 1749{
1507 return loop_count; 1750 return loop_count;
1508} 1751}
1509 1752
1510unsigned int 1753unsigned int
1511ev_loop_depth (EV_P) 1754ev_depth (EV_P)
1512{ 1755{
1513 return loop_depth; 1756 return loop_depth;
1514} 1757}
1515 1758
1516void 1759void
… …
1535ev_userdata (EV_P) 1778ev_userdata (EV_P)
1536{ 1779{
1537 return userdata; 1780 return userdata;
1538} 1781}
1539 1782
1783void
1540void 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))
1541{ 1785{
1542 invoke_cb = invoke_pending_cb; 1786 invoke_cb = invoke_pending_cb;
1543} 1787}
1544 1788
1789void
1545void 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))
1546{ 1791{
1547 release_cb = release; 1792 release_cb = release;
1548 acquire_cb = acquire; 1793 acquire_cb = acquire;
1549} 1794}
1550#endif 1795#endif
1551 1796
1552/* initialise a loop structure, must be zero-initialised */ 1797/* initialise a loop structure, must be zero-initialised */
1553static void noinline 1798static void noinline ecb_cold
1554loop_init (EV_P_ unsigned int flags) 1799loop_init (EV_P_ unsigned int flags)
1555{ 1800{
1556 if (!backend) 1801 if (!backend)
1557 { 1802 {
1803 origflags = flags;
1804
1558#if EV_USE_REALTIME 1805#if EV_USE_REALTIME
1559 if (!have_realtime) 1806 if (!have_realtime)
1560 { 1807 {
1561 struct timespec ts; 1808 struct timespec ts;
1562 1809
… …
1584 if (!(flags & EVFLAG_NOENV) 1831 if (!(flags & EVFLAG_NOENV)
1585 && !enable_secure () 1832 && !enable_secure ()
1586 && getenv ("LIBEV_FLAGS")) 1833 && getenv ("LIBEV_FLAGS"))
1587 flags = atoi (getenv ("LIBEV_FLAGS")); 1834 flags = atoi (getenv ("LIBEV_FLAGS"));
1588 1835
1589 ev_rt_now = ev_time (); 1836 ev_rt_now = ev_time ();
1590 mn_now = get_clock (); 1837 mn_now = get_clock ();
1591 now_floor = mn_now; 1838 now_floor = mn_now;
1592 rtmn_diff = ev_rt_now - mn_now; 1839 rtmn_diff = ev_rt_now - mn_now;
1593#if EV_MINIMAL < 2 1840#if EV_FEATURE_API
1594 invoke_cb = ev_invoke_pending; 1841 invoke_cb = ev_invoke_pending;
1595#endif 1842#endif
1596 1843
1597 io_blocktime = 0.; 1844 io_blocktime = 0.;
1598 timeout_blocktime = 0.; 1845 timeout_blocktime = 0.;
1599 backend = 0; 1846 backend = 0;
1600 backend_fd = -1; 1847 backend_fd = -1;
1601 sig_pending = 0; 1848 sig_pending = 0;
1602#if EV_ASYNC_ENABLE 1849#if EV_ASYNC_ENABLE
1603 async_pending = 0; 1850 async_pending = 0;
1604#endif 1851#endif
1852 pipe_write_skipped = 0;
1853 pipe_write_wanted = 0;
1605#if EV_USE_INOTIFY 1854#if EV_USE_INOTIFY
1606 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 1855 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1607#endif 1856#endif
1608#if EV_USE_SIGNALFD 1857#if EV_USE_SIGNALFD
1609 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 1858 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1610#endif 1859#endif
1611 1860
1612 if (!(flags & 0x0000ffffU)) 1861 if (!(flags & EVBACKEND_MASK))
1613 flags |= ev_recommended_backends (); 1862 flags |= ev_recommended_backends ();
1614 1863
1864#if EV_USE_IOCP
1865 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1866#endif
1615#if EV_USE_PORT 1867#if EV_USE_PORT
1616 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1868 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1617#endif 1869#endif
1618#if EV_USE_KQUEUE 1870#if EV_USE_KQUEUE
1619 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1871 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1628 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1880 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1629#endif 1881#endif
1630 1882
1631 ev_prepare_init (&pending_w, pendingcb); 1883 ev_prepare_init (&pending_w, pendingcb);
1632 1884
1885#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1633 ev_init (&pipe_w, pipecb); 1886 ev_init (&pipe_w, pipecb);
1634 ev_set_priority (&pipe_w, EV_MAXPRI); 1887 ev_set_priority (&pipe_w, EV_MAXPRI);
1888#endif
1635 } 1889 }
1636} 1890}
1637 1891
1638/* free up a loop structure */ 1892/* free up a loop structure */
1639static void noinline 1893void ecb_cold
1640loop_destroy (EV_P) 1894ev_loop_destroy (EV_P)
1641{ 1895{
1642 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
1643 1920
1644 if (ev_is_active (&pipe_w)) 1921 if (ev_is_active (&pipe_w))
1645 { 1922 {
1646 /*ev_ref (EV_A);*/ 1923 /*ev_ref (EV_A);*/
1647 /*ev_io_stop (EV_A_ &pipe_w);*/ 1924 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1658 } 1935 }
1659 } 1936 }
1660 1937
1661#if EV_USE_SIGNALFD 1938#if EV_USE_SIGNALFD
1662 if (ev_is_active (&sigfd_w)) 1939 if (ev_is_active (&sigfd_w))
1663 {
1664 /*ev_ref (EV_A);*/
1665 /*ev_io_stop (EV_A_ &sigfd_w);*/
1666
1667 close (sigfd); 1940 close (sigfd);
1668 }
1669#endif 1941#endif
1670 1942
1671#if EV_USE_INOTIFY 1943#if EV_USE_INOTIFY
1672 if (fs_fd >= 0) 1944 if (fs_fd >= 0)
1673 close (fs_fd); 1945 close (fs_fd);
1674#endif 1946#endif
1675 1947
1676 if (backend_fd >= 0) 1948 if (backend_fd >= 0)
1677 close (backend_fd); 1949 close (backend_fd);
1678 1950
1951#if EV_USE_IOCP
1952 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1953#endif
1679#if EV_USE_PORT 1954#if EV_USE_PORT
1680 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1955 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1681#endif 1956#endif
1682#if EV_USE_KQUEUE 1957#if EV_USE_KQUEUE
1683 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1958 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1710 array_free (periodic, EMPTY); 1985 array_free (periodic, EMPTY);
1711#endif 1986#endif
1712#if EV_FORK_ENABLE 1987#if EV_FORK_ENABLE
1713 array_free (fork, EMPTY); 1988 array_free (fork, EMPTY);
1714#endif 1989#endif
1990#if EV_CLEANUP_ENABLE
1991 array_free (cleanup, EMPTY);
1992#endif
1715 array_free (prepare, EMPTY); 1993 array_free (prepare, EMPTY);
1716 array_free (check, EMPTY); 1994 array_free (check, EMPTY);
1717#if EV_ASYNC_ENABLE 1995#if EV_ASYNC_ENABLE
1718 array_free (async, EMPTY); 1996 array_free (async, EMPTY);
1719#endif 1997#endif
1720 1998
1721 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
1722} 2009}
1723 2010
1724#if EV_USE_INOTIFY 2011#if EV_USE_INOTIFY
1725inline_size void infy_fork (EV_P); 2012inline_size void infy_fork (EV_P);
1726#endif 2013#endif
… …
1741 infy_fork (EV_A); 2028 infy_fork (EV_A);
1742#endif 2029#endif
1743 2030
1744 if (ev_is_active (&pipe_w)) 2031 if (ev_is_active (&pipe_w))
1745 { 2032 {
1746 /* this "locks" the handlers against writing to the pipe */ 2033 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1747 /* while we modify the fd vars */
1748 sig_pending = 1;
1749#if EV_ASYNC_ENABLE
1750 async_pending = 1;
1751#endif
1752 2034
1753 ev_ref (EV_A); 2035 ev_ref (EV_A);
1754 ev_io_stop (EV_A_ &pipe_w); 2036 ev_io_stop (EV_A_ &pipe_w);
1755 2037
1756#if EV_USE_EVENTFD 2038#if EV_USE_EVENTFD
… …
1762 { 2044 {
1763 EV_WIN32_CLOSE_FD (evpipe [0]); 2045 EV_WIN32_CLOSE_FD (evpipe [0]);
1764 EV_WIN32_CLOSE_FD (evpipe [1]); 2046 EV_WIN32_CLOSE_FD (evpipe [1]);
1765 } 2047 }
1766 2048
2049#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1767 evpipe_init (EV_A); 2050 evpipe_init (EV_A);
1768 /* now iterate over everything, in case we missed something */ 2051 /* now iterate over everything, in case we missed something */
1769 pipecb (EV_A_ &pipe_w, EV_READ); 2052 pipecb (EV_A_ &pipe_w, EV_READ);
2053#endif
1770 } 2054 }
1771 2055
1772 postfork = 0; 2056 postfork = 0;
1773} 2057}
1774 2058
1775#if EV_MULTIPLICITY 2059#if EV_MULTIPLICITY
1776 2060
1777struct ev_loop * 2061struct ev_loop * ecb_cold
1778ev_loop_new (unsigned int flags) 2062ev_loop_new (unsigned int flags)
1779{ 2063{
1780 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2064 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1781 2065
1782 memset (EV_A, 0, sizeof (struct ev_loop)); 2066 memset (EV_A, 0, sizeof (struct ev_loop));
1783 loop_init (EV_A_ flags); 2067 loop_init (EV_A_ flags);
1784 2068
1785 if (ev_backend (EV_A)) 2069 if (ev_backend (EV_A))
1786 return EV_A; 2070 return EV_A;
1787 2071
2072 ev_free (EV_A);
1788 return 0; 2073 return 0;
1789} 2074}
1790 2075
1791void
1792ev_loop_destroy (EV_P)
1793{
1794 loop_destroy (EV_A);
1795 ev_free (loop);
1796}
1797
1798void
1799ev_loop_fork (EV_P)
1800{
1801 postfork = 1; /* must be in line with ev_default_fork */
1802}
1803#endif /* multiplicity */ 2076#endif /* multiplicity */
1804 2077
1805#if EV_VERIFY 2078#if EV_VERIFY
1806static void noinline 2079static void noinline ecb_cold
1807verify_watcher (EV_P_ W w) 2080verify_watcher (EV_P_ W w)
1808{ 2081{
1809 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));
1810 2083
1811 if (w->pending) 2084 if (w->pending)
1812 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));
1813} 2086}
1814 2087
1815static void noinline 2088static void noinline ecb_cold
1816verify_heap (EV_P_ ANHE *heap, int N) 2089verify_heap (EV_P_ ANHE *heap, int N)
1817{ 2090{
1818 int i; 2091 int i;
1819 2092
1820 for (i = HEAP0; i < N + HEAP0; ++i) 2093 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1825 2098
1826 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2099 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1827 } 2100 }
1828} 2101}
1829 2102
1830static void noinline 2103static void noinline ecb_cold
1831array_verify (EV_P_ W *ws, int cnt) 2104array_verify (EV_P_ W *ws, int cnt)
1832{ 2105{
1833 while (cnt--) 2106 while (cnt--)
1834 { 2107 {
1835 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2108 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1836 verify_watcher (EV_A_ ws [cnt]); 2109 verify_watcher (EV_A_ ws [cnt]);
1837 } 2110 }
1838} 2111}
1839#endif 2112#endif
1840 2113
1841#if EV_MINIMAL < 2 2114#if EV_FEATURE_API
1842void 2115void ecb_cold
1843ev_loop_verify (EV_P) 2116ev_verify (EV_P)
1844{ 2117{
1845#if EV_VERIFY 2118#if EV_VERIFY
1846 int i; 2119 int i;
1847 WL w; 2120 WL w;
1848 2121
… …
1882#if EV_FORK_ENABLE 2155#if EV_FORK_ENABLE
1883 assert (forkmax >= forkcnt); 2156 assert (forkmax >= forkcnt);
1884 array_verify (EV_A_ (W *)forks, forkcnt); 2157 array_verify (EV_A_ (W *)forks, forkcnt);
1885#endif 2158#endif
1886 2159
2160#if EV_CLEANUP_ENABLE
2161 assert (cleanupmax >= cleanupcnt);
2162 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2163#endif
2164
1887#if EV_ASYNC_ENABLE 2165#if EV_ASYNC_ENABLE
1888 assert (asyncmax >= asynccnt); 2166 assert (asyncmax >= asynccnt);
1889 array_verify (EV_A_ (W *)asyncs, asynccnt); 2167 array_verify (EV_A_ (W *)asyncs, asynccnt);
1890#endif 2168#endif
1891 2169
2170#if EV_PREPARE_ENABLE
1892 assert (preparemax >= preparecnt); 2171 assert (preparemax >= preparecnt);
1893 array_verify (EV_A_ (W *)prepares, preparecnt); 2172 array_verify (EV_A_ (W *)prepares, preparecnt);
2173#endif
1894 2174
2175#if EV_CHECK_ENABLE
1895 assert (checkmax >= checkcnt); 2176 assert (checkmax >= checkcnt);
1896 array_verify (EV_A_ (W *)checks, checkcnt); 2177 array_verify (EV_A_ (W *)checks, checkcnt);
2178#endif
1897 2179
1898# if 0 2180# if 0
2181#if EV_CHILD_ENABLE
1899 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)
1900 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2183 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2184#endif
1901# endif 2185# endif
1902#endif 2186#endif
1903} 2187}
1904#endif 2188#endif
1905 2189
1906#if EV_MULTIPLICITY 2190#if EV_MULTIPLICITY
1907struct ev_loop * 2191struct ev_loop * ecb_cold
1908ev_default_loop_init (unsigned int flags)
1909#else 2192#else
1910int 2193int
2194#endif
1911ev_default_loop (unsigned int flags) 2195ev_default_loop (unsigned int flags)
1912#endif
1913{ 2196{
1914 if (!ev_default_loop_ptr) 2197 if (!ev_default_loop_ptr)
1915 { 2198 {
1916#if EV_MULTIPLICITY 2199#if EV_MULTIPLICITY
1917 EV_P = ev_default_loop_ptr = &default_loop_struct; 2200 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1921 2204
1922 loop_init (EV_A_ flags); 2205 loop_init (EV_A_ flags);
1923 2206
1924 if (ev_backend (EV_A)) 2207 if (ev_backend (EV_A))
1925 { 2208 {
1926#ifndef _WIN32 2209#if EV_CHILD_ENABLE
1927 ev_signal_init (&childev, childcb, SIGCHLD); 2210 ev_signal_init (&childev, childcb, SIGCHLD);
1928 ev_set_priority (&childev, EV_MAXPRI); 2211 ev_set_priority (&childev, EV_MAXPRI);
1929 ev_signal_start (EV_A_ &childev); 2212 ev_signal_start (EV_A_ &childev);
1930 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2213 ev_unref (EV_A); /* child watcher should not keep loop alive */
1931#endif 2214#endif
… …
1936 2219
1937 return ev_default_loop_ptr; 2220 return ev_default_loop_ptr;
1938} 2221}
1939 2222
1940void 2223void
1941ev_default_destroy (void) 2224ev_loop_fork (EV_P)
1942{ 2225{
1943#if EV_MULTIPLICITY
1944 EV_P = ev_default_loop_ptr;
1945#endif
1946
1947 ev_default_loop_ptr = 0;
1948
1949#ifndef _WIN32
1950 ev_ref (EV_A); /* child watcher */
1951 ev_signal_stop (EV_A_ &childev);
1952#endif
1953
1954 loop_destroy (EV_A);
1955}
1956
1957void
1958ev_default_fork (void)
1959{
1960#if EV_MULTIPLICITY
1961 EV_P = ev_default_loop_ptr;
1962#endif
1963
1964 postfork = 1; /* must be in line with ev_loop_fork */ 2226 postfork = 1; /* must be in line with ev_default_fork */
1965} 2227}
1966 2228
1967/*****************************************************************************/ 2229/*****************************************************************************/
1968 2230
1969void 2231void
… …
1991 2253
1992 for (pri = NUMPRI; pri--; ) 2254 for (pri = NUMPRI; pri--; )
1993 while (pendingcnt [pri]) 2255 while (pendingcnt [pri])
1994 { 2256 {
1995 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2257 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1996
1997 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1998 /* ^ this is no longer true, as pending_w could be here */
1999 2258
2000 p->w->pending = 0; 2259 p->w->pending = 0;
2001 EV_CB_INVOKE (p->w, p->events); 2260 EV_CB_INVOKE (p->w, p->events);
2002 EV_FREQUENT_CHECK; 2261 EV_FREQUENT_CHECK;
2003 } 2262 }
… …
2060 EV_FREQUENT_CHECK; 2319 EV_FREQUENT_CHECK;
2061 feed_reverse (EV_A_ (W)w); 2320 feed_reverse (EV_A_ (W)w);
2062 } 2321 }
2063 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2322 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2064 2323
2065 feed_reverse_done (EV_A_ EV_TIMEOUT); 2324 feed_reverse_done (EV_A_ EV_TIMER);
2066 } 2325 }
2067} 2326}
2068 2327
2069#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
2070/* make periodics pending */ 2354/* make periodics pending */
2071inline_size void 2355inline_size void
2072periodics_reify (EV_P) 2356periodics_reify (EV_P)
2073{ 2357{
2074 EV_FREQUENT_CHECK; 2358 EV_FREQUENT_CHECK;
… …
2093 ANHE_at_cache (periodics [HEAP0]); 2377 ANHE_at_cache (periodics [HEAP0]);
2094 downheap (periodics, periodiccnt, HEAP0); 2378 downheap (periodics, periodiccnt, HEAP0);
2095 } 2379 }
2096 else if (w->interval) 2380 else if (w->interval)
2097 { 2381 {
2098 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2382 periodic_recalc (EV_A_ w);
2099 /* if next trigger time is not sufficiently in the future, put it there */
2100 /* this might happen because of floating point inexactness */
2101 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2102 {
2103 ev_at (w) += w->interval;
2104
2105 /* if interval is unreasonably low we might still have a time in the past */
2106 /* so correct this. this will make the periodic very inexact, but the user */
2107 /* has effectively asked to get triggered more often than possible */
2108 if (ev_at (w) < ev_rt_now)
2109 ev_at (w) = ev_rt_now;
2110 }
2111
2112 ANHE_at_cache (periodics [HEAP0]); 2383 ANHE_at_cache (periodics [HEAP0]);
2113 downheap (periodics, periodiccnt, HEAP0); 2384 downheap (periodics, periodiccnt, HEAP0);
2114 } 2385 }
2115 else 2386 else
2116 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2387 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2123 feed_reverse_done (EV_A_ EV_PERIODIC); 2394 feed_reverse_done (EV_A_ EV_PERIODIC);
2124 } 2395 }
2125} 2396}
2126 2397
2127/* simply recalculate all periodics */ 2398/* simply recalculate all periodics */
2128/* 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? */
2129static void noinline 2400static void noinline ecb_cold
2130periodics_reschedule (EV_P) 2401periodics_reschedule (EV_P)
2131{ 2402{
2132 int i; 2403 int i;
2133 2404
2134 /* adjust periodics after time jump */ 2405 /* adjust periodics after time jump */
… …
2137 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2408 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2138 2409
2139 if (w->reschedule_cb) 2410 if (w->reschedule_cb)
2140 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2411 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2141 else if (w->interval) 2412 else if (w->interval)
2142 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2413 periodic_recalc (EV_A_ w);
2143 2414
2144 ANHE_at_cache (periodics [i]); 2415 ANHE_at_cache (periodics [i]);
2145 } 2416 }
2146 2417
2147 reheap (periodics, periodiccnt); 2418 reheap (periodics, periodiccnt);
2148} 2419}
2149#endif 2420#endif
2150 2421
2151/* adjust all timers by a given offset */ 2422/* adjust all timers by a given offset */
2152static void noinline 2423static void noinline ecb_cold
2153timers_reschedule (EV_P_ ev_tstamp adjust) 2424timers_reschedule (EV_P_ ev_tstamp adjust)
2154{ 2425{
2155 int i; 2426 int i;
2156 2427
2157 for (i = 0; i < timercnt; ++i) 2428 for (i = 0; i < timercnt; ++i)
… …
2161 ANHE_at_cache (*he); 2432 ANHE_at_cache (*he);
2162 } 2433 }
2163} 2434}
2164 2435
2165/* fetch new monotonic and realtime times from the kernel */ 2436/* fetch new monotonic and realtime times from the kernel */
2166/* also detetc if there was a timejump, and act accordingly */ 2437/* also detect if there was a timejump, and act accordingly */
2167inline_speed void 2438inline_speed void
2168time_update (EV_P_ ev_tstamp max_block) 2439time_update (EV_P_ ev_tstamp max_block)
2169{ 2440{
2170#if EV_USE_MONOTONIC 2441#if EV_USE_MONOTONIC
2171 if (expect_true (have_monotonic)) 2442 if (expect_true (have_monotonic))
… …
2194 * 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
2195 * in the unlikely event of having been preempted here. 2466 * in the unlikely event of having been preempted here.
2196 */ 2467 */
2197 for (i = 4; --i; ) 2468 for (i = 4; --i; )
2198 { 2469 {
2470 ev_tstamp diff;
2199 rtmn_diff = ev_rt_now - mn_now; 2471 rtmn_diff = ev_rt_now - mn_now;
2200 2472
2473 diff = odiff - rtmn_diff;
2474
2201 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2475 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2202 return; /* all is well */ 2476 return; /* all is well */
2203 2477
2204 ev_rt_now = ev_time (); 2478 ev_rt_now = ev_time ();
2205 mn_now = get_clock (); 2479 mn_now = get_clock ();
2206 now_floor = mn_now; 2480 now_floor = mn_now;
… …
2229 mn_now = ev_rt_now; 2503 mn_now = ev_rt_now;
2230 } 2504 }
2231} 2505}
2232 2506
2233void 2507void
2234ev_loop (EV_P_ int flags) 2508ev_run (EV_P_ int flags)
2235{ 2509{
2236#if EV_MINIMAL < 2 2510#if EV_FEATURE_API
2237 ++loop_depth; 2511 ++loop_depth;
2238#endif 2512#endif
2239 2513
2240 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));
2241 2515
2242 loop_done = EVUNLOOP_CANCEL; 2516 loop_done = EVBREAK_CANCEL;
2243 2517
2244 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 */
2245 2519
2246 do 2520 do
2247 { 2521 {
2248#if EV_VERIFY >= 2 2522#if EV_VERIFY >= 2
2249 ev_loop_verify (EV_A); 2523 ev_verify (EV_A);
2250#endif 2524#endif
2251 2525
2252#ifndef _WIN32 2526#ifndef _WIN32
2253 if (expect_false (curpid)) /* penalise the forking check even more */ 2527 if (expect_false (curpid)) /* penalise the forking check even more */
2254 if (expect_false (getpid () != curpid)) 2528 if (expect_false (getpid () != curpid))
… …
2266 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2540 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2267 EV_INVOKE_PENDING; 2541 EV_INVOKE_PENDING;
2268 } 2542 }
2269#endif 2543#endif
2270 2544
2545#if EV_PREPARE_ENABLE
2271 /* queue prepare watchers (and execute them) */ 2546 /* queue prepare watchers (and execute them) */
2272 if (expect_false (preparecnt)) 2547 if (expect_false (preparecnt))
2273 { 2548 {
2274 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2549 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2275 EV_INVOKE_PENDING; 2550 EV_INVOKE_PENDING;
2276 } 2551 }
2552#endif
2277 2553
2278 if (expect_false (loop_done)) 2554 if (expect_false (loop_done))
2279 break; 2555 break;
2280 2556
2281 /* we might have forked, so reify kernel state if necessary */ 2557 /* we might have forked, so reify kernel state if necessary */
… …
2288 /* calculate blocking time */ 2564 /* calculate blocking time */
2289 { 2565 {
2290 ev_tstamp waittime = 0.; 2566 ev_tstamp waittime = 0.;
2291 ev_tstamp sleeptime = 0.; 2567 ev_tstamp sleeptime = 0.;
2292 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
2293 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2578 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2294 { 2579 {
2295 /* remember old timestamp for io_blocktime calculation */
2296 ev_tstamp prev_mn_now = mn_now;
2297
2298 /* update time to cancel out callback processing overhead */
2299 time_update (EV_A_ 1e100);
2300
2301 waittime = MAX_BLOCKTIME; 2580 waittime = MAX_BLOCKTIME;
2302 2581
2303 if (timercnt) 2582 if (timercnt)
2304 { 2583 {
2305 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2584 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2306 if (waittime > to) waittime = to; 2585 if (waittime > to) waittime = to;
2307 } 2586 }
2308 2587
2309#if EV_PERIODIC_ENABLE 2588#if EV_PERIODIC_ENABLE
2310 if (periodiccnt) 2589 if (periodiccnt)
2311 { 2590 {
2312 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2591 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2313 if (waittime > to) waittime = to; 2592 if (waittime > to) waittime = to;
2314 } 2593 }
2315#endif 2594#endif
2316 2595
2317 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2596 /* don't let timeouts decrease the waittime below timeout_blocktime */
2318 if (expect_false (waittime < timeout_blocktime)) 2597 if (expect_false (waittime < timeout_blocktime))
2319 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;
2320 2604
2321 /* extra check because io_blocktime is commonly 0 */ 2605 /* extra check because io_blocktime is commonly 0 */
2322 if (expect_false (io_blocktime)) 2606 if (expect_false (io_blocktime))
2323 { 2607 {
2324 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2608 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2325 2609
2326 if (sleeptime > waittime - backend_fudge) 2610 if (sleeptime > waittime - backend_mintime)
2327 sleeptime = waittime - backend_fudge; 2611 sleeptime = waittime - backend_mintime;
2328 2612
2329 if (expect_true (sleeptime > 0.)) 2613 if (expect_true (sleeptime > 0.))
2330 { 2614 {
2331 ev_sleep (sleeptime); 2615 ev_sleep (sleeptime);
2332 waittime -= sleeptime; 2616 waittime -= sleeptime;
2333 } 2617 }
2334 } 2618 }
2335 } 2619 }
2336 2620
2337#if EV_MINIMAL < 2 2621#if EV_FEATURE_API
2338 ++loop_count; 2622 ++loop_count;
2339#endif 2623#endif
2340 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 2624 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2341 backend_poll (EV_A_ waittime); 2625 backend_poll (EV_A_ waittime);
2342 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
2343 2636
2344 /* update ev_rt_now, do magic */ 2637 /* update ev_rt_now, do magic */
2345 time_update (EV_A_ waittime + sleeptime); 2638 time_update (EV_A_ waittime + sleeptime);
2346 } 2639 }
2347 2640
… …
2354#if EV_IDLE_ENABLE 2647#if EV_IDLE_ENABLE
2355 /* queue idle watchers unless other events are pending */ 2648 /* queue idle watchers unless other events are pending */
2356 idle_reify (EV_A); 2649 idle_reify (EV_A);
2357#endif 2650#endif
2358 2651
2652#if EV_CHECK_ENABLE
2359 /* queue check watchers, to be executed first */ 2653 /* queue check watchers, to be executed first */
2360 if (expect_false (checkcnt)) 2654 if (expect_false (checkcnt))
2361 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2655 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2656#endif
2362 2657
2363 EV_INVOKE_PENDING; 2658 EV_INVOKE_PENDING;
2364 } 2659 }
2365 while (expect_true ( 2660 while (expect_true (
2366 activecnt 2661 activecnt
2367 && !loop_done 2662 && !loop_done
2368 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2663 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2369 )); 2664 ));
2370 2665
2371 if (loop_done == EVUNLOOP_ONE) 2666 if (loop_done == EVBREAK_ONE)
2372 loop_done = EVUNLOOP_CANCEL; 2667 loop_done = EVBREAK_CANCEL;
2373 2668
2374#if EV_MINIMAL < 2 2669#if EV_FEATURE_API
2375 --loop_depth; 2670 --loop_depth;
2376#endif 2671#endif
2377} 2672}
2378 2673
2379void 2674void
2380ev_unloop (EV_P_ int how) 2675ev_break (EV_P_ int how)
2381{ 2676{
2382 loop_done = how; 2677 loop_done = how;
2383} 2678}
2384 2679
2385void 2680void
… …
2505 2800
2506 if (expect_false (ev_is_active (w))) 2801 if (expect_false (ev_is_active (w)))
2507 return; 2802 return;
2508 2803
2509 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2804 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2510 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))));
2511 2806
2512 EV_FREQUENT_CHECK; 2807 EV_FREQUENT_CHECK;
2513 2808
2514 ev_start (EV_A_ (W)w, 1); 2809 ev_start (EV_A_ (W)w, 1);
2515 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2810 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2533 EV_FREQUENT_CHECK; 2828 EV_FREQUENT_CHECK;
2534 2829
2535 wlist_del (&anfds[w->fd].head, (WL)w); 2830 wlist_del (&anfds[w->fd].head, (WL)w);
2536 ev_stop (EV_A_ (W)w); 2831 ev_stop (EV_A_ (W)w);
2537 2832
2538 fd_change (EV_A_ w->fd, 1); 2833 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2539 2834
2540 EV_FREQUENT_CHECK; 2835 EV_FREQUENT_CHECK;
2541} 2836}
2542 2837
2543void noinline 2838void noinline
… …
2585 timers [active] = timers [timercnt + HEAP0]; 2880 timers [active] = timers [timercnt + HEAP0];
2586 adjustheap (timers, timercnt, active); 2881 adjustheap (timers, timercnt, active);
2587 } 2882 }
2588 } 2883 }
2589 2884
2590 EV_FREQUENT_CHECK;
2591
2592 ev_at (w) -= mn_now; 2885 ev_at (w) -= mn_now;
2593 2886
2594 ev_stop (EV_A_ (W)w); 2887 ev_stop (EV_A_ (W)w);
2888
2889 EV_FREQUENT_CHECK;
2595} 2890}
2596 2891
2597void noinline 2892void noinline
2598ev_timer_again (EV_P_ ev_timer *w) 2893ev_timer_again (EV_P_ ev_timer *w)
2599{ 2894{
… …
2635 if (w->reschedule_cb) 2930 if (w->reschedule_cb)
2636 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2931 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2637 else if (w->interval) 2932 else if (w->interval)
2638 { 2933 {
2639 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.));
2640 /* this formula differs from the one in periodic_reify because we do not always round up */ 2935 periodic_recalc (EV_A_ w);
2641 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2642 } 2936 }
2643 else 2937 else
2644 ev_at (w) = w->offset; 2938 ev_at (w) = w->offset;
2645 2939
2646 EV_FREQUENT_CHECK; 2940 EV_FREQUENT_CHECK;
… …
2678 periodics [active] = periodics [periodiccnt + HEAP0]; 2972 periodics [active] = periodics [periodiccnt + HEAP0];
2679 adjustheap (periodics, periodiccnt, active); 2973 adjustheap (periodics, periodiccnt, active);
2680 } 2974 }
2681 } 2975 }
2682 2976
2683 EV_FREQUENT_CHECK;
2684
2685 ev_stop (EV_A_ (W)w); 2977 ev_stop (EV_A_ (W)w);
2978
2979 EV_FREQUENT_CHECK;
2686} 2980}
2687 2981
2688void noinline 2982void noinline
2689ev_periodic_again (EV_P_ ev_periodic *w) 2983ev_periodic_again (EV_P_ ev_periodic *w)
2690{ 2984{
… …
2695#endif 2989#endif
2696 2990
2697#ifndef SA_RESTART 2991#ifndef SA_RESTART
2698# define SA_RESTART 0 2992# define SA_RESTART 0
2699#endif 2993#endif
2994
2995#if EV_SIGNAL_ENABLE
2700 2996
2701void noinline 2997void noinline
2702ev_signal_start (EV_P_ ev_signal *w) 2998ev_signal_start (EV_P_ ev_signal *w)
2703{ 2999{
2704 if (expect_false (ev_is_active (w))) 3000 if (expect_false (ev_is_active (w)))
… …
2751 if (!((WL)w)->next) 3047 if (!((WL)w)->next)
2752# if EV_USE_SIGNALFD 3048# if EV_USE_SIGNALFD
2753 if (sigfd < 0) /*TODO*/ 3049 if (sigfd < 0) /*TODO*/
2754# endif 3050# endif
2755 { 3051 {
2756# if _WIN32 3052# ifdef _WIN32
3053 evpipe_init (EV_A);
3054
2757 signal (w->signum, ev_sighandler); 3055 signal (w->signum, ev_sighandler);
2758# else 3056# else
2759 struct sigaction sa; 3057 struct sigaction sa;
2760 3058
2761 evpipe_init (EV_A); 3059 evpipe_init (EV_A);
… …
2763 sa.sa_handler = ev_sighandler; 3061 sa.sa_handler = ev_sighandler;
2764 sigfillset (&sa.sa_mask); 3062 sigfillset (&sa.sa_mask);
2765 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 */
2766 sigaction (w->signum, &sa, 0); 3064 sigaction (w->signum, &sa, 0);
2767 3065
3066 if (origflags & EVFLAG_NOSIGMASK)
3067 {
2768 sigemptyset (&sa.sa_mask); 3068 sigemptyset (&sa.sa_mask);
2769 sigaddset (&sa.sa_mask, w->signum); 3069 sigaddset (&sa.sa_mask, w->signum);
2770 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3070 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3071 }
2771#endif 3072#endif
2772 } 3073 }
2773 3074
2774 EV_FREQUENT_CHECK; 3075 EV_FREQUENT_CHECK;
2775} 3076}
… …
2792 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3093 signals [w->signum - 1].loop = 0; /* unattach from signal */
2793#endif 3094#endif
2794#if EV_USE_SIGNALFD 3095#if EV_USE_SIGNALFD
2795 if (sigfd >= 0) 3096 if (sigfd >= 0)
2796 { 3097 {
2797 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3098 sigset_t ss;
3099
3100 sigemptyset (&ss);
3101 sigaddset (&ss, w->signum);
2798 sigdelset (&sigfd_set, w->signum); 3102 sigdelset (&sigfd_set, w->signum);
3103
2799 signalfd (sigfd, &sigfd_set, 0); 3104 signalfd (sigfd, &sigfd_set, 0);
2800 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3105 sigprocmask (SIG_UNBLOCK, &ss, 0);
2801 /*TODO: maybe unblock signal? */
2802 } 3106 }
2803 else 3107 else
2804#endif 3108#endif
2805 signal (w->signum, SIG_DFL); 3109 signal (w->signum, SIG_DFL);
2806 } 3110 }
2807 3111
2808 EV_FREQUENT_CHECK; 3112 EV_FREQUENT_CHECK;
2809} 3113}
2810 3114
3115#endif
3116
3117#if EV_CHILD_ENABLE
3118
2811void 3119void
2812ev_child_start (EV_P_ ev_child *w) 3120ev_child_start (EV_P_ ev_child *w)
2813{ 3121{
2814#if EV_MULTIPLICITY 3122#if EV_MULTIPLICITY
2815 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));
… …
2818 return; 3126 return;
2819 3127
2820 EV_FREQUENT_CHECK; 3128 EV_FREQUENT_CHECK;
2821 3129
2822 ev_start (EV_A_ (W)w, 1); 3130 ev_start (EV_A_ (W)w, 1);
2823 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3131 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2824 3132
2825 EV_FREQUENT_CHECK; 3133 EV_FREQUENT_CHECK;
2826} 3134}
2827 3135
2828void 3136void
… …
2832 if (expect_false (!ev_is_active (w))) 3140 if (expect_false (!ev_is_active (w)))
2833 return; 3141 return;
2834 3142
2835 EV_FREQUENT_CHECK; 3143 EV_FREQUENT_CHECK;
2836 3144
2837 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3145 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2838 ev_stop (EV_A_ (W)w); 3146 ev_stop (EV_A_ (W)w);
2839 3147
2840 EV_FREQUENT_CHECK; 3148 EV_FREQUENT_CHECK;
2841} 3149}
3150
3151#endif
2842 3152
2843#if EV_STAT_ENABLE 3153#if EV_STAT_ENABLE
2844 3154
2845# ifdef _WIN32 3155# ifdef _WIN32
2846# undef lstat 3156# undef lstat
… …
2852#define MIN_STAT_INTERVAL 0.1074891 3162#define MIN_STAT_INTERVAL 0.1074891
2853 3163
2854static 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);
2855 3165
2856#if EV_USE_INOTIFY 3166#if EV_USE_INOTIFY
2857# 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)
2858 3170
2859static void noinline 3171static void noinline
2860infy_add (EV_P_ ev_stat *w) 3172infy_add (EV_P_ ev_stat *w)
2861{ 3173{
2862 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);
2863 3175
2864 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 */
2865 { 3196 }
3197 else
3198 {
3199 /* can't use inotify, continue to stat */
2866 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3200 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2867 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2868 3201
2869 /* monitor some parent directory for speedup hints */ 3202 /* if path is not there, monitor some parent directory for speedup hints */
2870 /* 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, */
2871 /* but an efficiency issue only */ 3204 /* but an efficiency issue only */
2872 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3205 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2873 { 3206 {
2874 char path [4096]; 3207 char path [4096];
… …
2884 if (!pend || pend == path) 3217 if (!pend || pend == path)
2885 break; 3218 break;
2886 3219
2887 *pend = 0; 3220 *pend = 0;
2888 w->wd = inotify_add_watch (fs_fd, path, mask); 3221 w->wd = inotify_add_watch (fs_fd, path, mask);
2889 } 3222 }
2890 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3223 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2891 } 3224 }
2892 } 3225 }
2893 3226
2894 if (w->wd >= 0) 3227 if (w->wd >= 0)
2895 {
2896 struct statfs sfs;
2897
2898 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);
2899 3229
2900 /* now local changes will be tracked by inotify, but remote changes won't */ 3230 /* now re-arm timer, if required */
2901 /* unless the filesystem it known to be local, we therefore still poll */ 3231 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2902 /* also do poll on <2.6.25, but with normal frequency */
2903
2904 if (fs_2625 && !statfs (w->path, &sfs))
2905 if (sfs.f_type == 0x1373 /* devfs */
2906 || sfs.f_type == 0xEF53 /* ext2/3 */
2907 || sfs.f_type == 0x3153464a /* jfs */
2908 || sfs.f_type == 0x52654973 /* reiser3 */
2909 || sfs.f_type == 0x01021994 /* tempfs */
2910 || sfs.f_type == 0x58465342 /* xfs */)
2911 return;
2912
2913 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2914 ev_timer_again (EV_A_ &w->timer); 3232 ev_timer_again (EV_A_ &w->timer);
2915 } 3233 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2916} 3234}
2917 3235
2918static void noinline 3236static void noinline
2919infy_del (EV_P_ ev_stat *w) 3237infy_del (EV_P_ ev_stat *w)
2920{ 3238{
… …
2923 3241
2924 if (wd < 0) 3242 if (wd < 0)
2925 return; 3243 return;
2926 3244
2927 w->wd = -2; 3245 w->wd = -2;
2928 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3246 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2929 wlist_del (&fs_hash [slot].head, (WL)w); 3247 wlist_del (&fs_hash [slot].head, (WL)w);
2930 3248
2931 /* remove this watcher, if others are watching it, they will rearm */ 3249 /* remove this watcher, if others are watching it, they will rearm */
2932 inotify_rm_watch (fs_fd, wd); 3250 inotify_rm_watch (fs_fd, wd);
2933} 3251}
… …
2935static void noinline 3253static void noinline
2936infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3254infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2937{ 3255{
2938 if (slot < 0) 3256 if (slot < 0)
2939 /* overflow, need to check for all hash slots */ 3257 /* overflow, need to check for all hash slots */
2940 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3258 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2941 infy_wd (EV_A_ slot, wd, ev); 3259 infy_wd (EV_A_ slot, wd, ev);
2942 else 3260 else
2943 { 3261 {
2944 WL w_; 3262 WL w_;
2945 3263
2946 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3264 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2947 { 3265 {
2948 ev_stat *w = (ev_stat *)w_; 3266 ev_stat *w = (ev_stat *)w_;
2949 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 */
2950 3268
2951 if (w->wd == wd || wd == -1) 3269 if (w->wd == wd || wd == -1)
2952 { 3270 {
2953 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3271 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2954 { 3272 {
2955 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);
2956 w->wd = -1; 3274 w->wd = -1;
2957 infy_add (EV_A_ w); /* re-add, no matter what */ 3275 infy_add (EV_A_ w); /* re-add, no matter what */
2958 } 3276 }
2959 3277
2960 stat_timer_cb (EV_A_ &w->timer, 0); 3278 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2965 3283
2966static void 3284static void
2967infy_cb (EV_P_ ev_io *w, int revents) 3285infy_cb (EV_P_ ev_io *w, int revents)
2968{ 3286{
2969 char buf [EV_INOTIFY_BUFSIZE]; 3287 char buf [EV_INOTIFY_BUFSIZE];
2970 struct inotify_event *ev = (struct inotify_event *)buf;
2971 int ofs; 3288 int ofs;
2972 int len = read (fs_fd, buf, sizeof (buf)); 3289 int len = read (fs_fd, buf, sizeof (buf));
2973 3290
2974 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);
2975 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 }
2976} 3297}
2977 3298
2978inline_size void 3299inline_size void ecb_cold
2979check_2625 (EV_P) 3300ev_check_2625 (EV_P)
2980{ 3301{
2981 /* kernels < 2.6.25 are borked 3302 /* kernels < 2.6.25 are borked
2982 * 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
2983 */ 3304 */
2984 struct utsname buf; 3305 if (ev_linux_version () < 0x020619)
2985 int major, minor, micro;
2986
2987 if (uname (&buf))
2988 return;
2989
2990 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2991 return;
2992
2993 if (major < 2
2994 || (major == 2 && minor < 6)
2995 || (major == 2 && minor == 6 && micro < 25))
2996 return; 3306 return;
2997 3307
2998 fs_2625 = 1; 3308 fs_2625 = 1;
2999} 3309}
3000 3310
… …
3015 if (fs_fd != -2) 3325 if (fs_fd != -2)
3016 return; 3326 return;
3017 3327
3018 fs_fd = -1; 3328 fs_fd = -1;
3019 3329
3020 check_2625 (EV_A); 3330 ev_check_2625 (EV_A);
3021 3331
3022 fs_fd = infy_newfd (); 3332 fs_fd = infy_newfd ();
3023 3333
3024 if (fs_fd >= 0) 3334 if (fs_fd >= 0)
3025 { 3335 {
3026 fd_intern (fs_fd); 3336 fd_intern (fs_fd);
3027 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3337 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
3028 ev_set_priority (&fs_w, EV_MAXPRI); 3338 ev_set_priority (&fs_w, EV_MAXPRI);
3029 ev_io_start (EV_A_ &fs_w); 3339 ev_io_start (EV_A_ &fs_w);
3340 ev_unref (EV_A);
3030 } 3341 }
3031} 3342}
3032 3343
3033inline_size void 3344inline_size void
3034infy_fork (EV_P) 3345infy_fork (EV_P)
… …
3036 int slot; 3347 int slot;
3037 3348
3038 if (fs_fd < 0) 3349 if (fs_fd < 0)
3039 return; 3350 return;
3040 3351
3352 ev_ref (EV_A);
3041 ev_io_stop (EV_A_ &fs_w); 3353 ev_io_stop (EV_A_ &fs_w);
3042 close (fs_fd); 3354 close (fs_fd);
3043 fs_fd = infy_newfd (); 3355 fs_fd = infy_newfd ();
3044 3356
3045 if (fs_fd >= 0) 3357 if (fs_fd >= 0)
3046 { 3358 {
3047 fd_intern (fs_fd); 3359 fd_intern (fs_fd);
3048 ev_io_set (&fs_w, fs_fd, EV_READ); 3360 ev_io_set (&fs_w, fs_fd, EV_READ);
3049 ev_io_start (EV_A_ &fs_w); 3361 ev_io_start (EV_A_ &fs_w);
3362 ev_unref (EV_A);
3050 } 3363 }
3051 3364
3052 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3365 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3053 { 3366 {
3054 WL w_ = fs_hash [slot].head; 3367 WL w_ = fs_hash [slot].head;
3055 fs_hash [slot].head = 0; 3368 fs_hash [slot].head = 0;
3056 3369
3057 while (w_) 3370 while (w_)
… …
3062 w->wd = -1; 3375 w->wd = -1;
3063 3376
3064 if (fs_fd >= 0) 3377 if (fs_fd >= 0)
3065 infy_add (EV_A_ w); /* re-add, no matter what */ 3378 infy_add (EV_A_ w); /* re-add, no matter what */
3066 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);
3067 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 }
3068 } 3386 }
3069 } 3387 }
3070} 3388}
3071 3389
3072#endif 3390#endif
… …
3089static void noinline 3407static void noinline
3090stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3408stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3091{ 3409{
3092 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3410 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3093 3411
3094 /* we copy this here each the time so that */ 3412 ev_statdata prev = w->attr;
3095 /* prev has the old value when the callback gets invoked */
3096 w->prev = w->attr;
3097 ev_stat_stat (EV_A_ w); 3413 ev_stat_stat (EV_A_ w);
3098 3414
3099 /* 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 */
3100 if ( 3416 if (
3101 w->prev.st_dev != w->attr.st_dev 3417 prev.st_dev != w->attr.st_dev
3102 || w->prev.st_ino != w->attr.st_ino 3418 || prev.st_ino != w->attr.st_ino
3103 || w->prev.st_mode != w->attr.st_mode 3419 || prev.st_mode != w->attr.st_mode
3104 || w->prev.st_nlink != w->attr.st_nlink 3420 || prev.st_nlink != w->attr.st_nlink
3105 || w->prev.st_uid != w->attr.st_uid 3421 || prev.st_uid != w->attr.st_uid
3106 || w->prev.st_gid != w->attr.st_gid 3422 || prev.st_gid != w->attr.st_gid
3107 || w->prev.st_rdev != w->attr.st_rdev 3423 || prev.st_rdev != w->attr.st_rdev
3108 || w->prev.st_size != w->attr.st_size 3424 || prev.st_size != w->attr.st_size
3109 || w->prev.st_atime != w->attr.st_atime 3425 || prev.st_atime != w->attr.st_atime
3110 || w->prev.st_mtime != w->attr.st_mtime 3426 || prev.st_mtime != w->attr.st_mtime
3111 || w->prev.st_ctime != w->attr.st_ctime 3427 || prev.st_ctime != w->attr.st_ctime
3112 ) { 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
3113 #if EV_USE_INOTIFY 3434 #if EV_USE_INOTIFY
3114 if (fs_fd >= 0) 3435 if (fs_fd >= 0)
3115 { 3436 {
3116 infy_del (EV_A_ w); 3437 infy_del (EV_A_ w);
3117 infy_add (EV_A_ w); 3438 infy_add (EV_A_ w);
… …
3142 3463
3143 if (fs_fd >= 0) 3464 if (fs_fd >= 0)
3144 infy_add (EV_A_ w); 3465 infy_add (EV_A_ w);
3145 else 3466 else
3146#endif 3467#endif
3468 {
3147 ev_timer_again (EV_A_ &w->timer); 3469 ev_timer_again (EV_A_ &w->timer);
3470 ev_unref (EV_A);
3471 }
3148 3472
3149 ev_start (EV_A_ (W)w, 1); 3473 ev_start (EV_A_ (W)w, 1);
3150 3474
3151 EV_FREQUENT_CHECK; 3475 EV_FREQUENT_CHECK;
3152} 3476}
… …
3161 EV_FREQUENT_CHECK; 3485 EV_FREQUENT_CHECK;
3162 3486
3163#if EV_USE_INOTIFY 3487#if EV_USE_INOTIFY
3164 infy_del (EV_A_ w); 3488 infy_del (EV_A_ w);
3165#endif 3489#endif
3490
3491 if (ev_is_active (&w->timer))
3492 {
3493 ev_ref (EV_A);
3166 ev_timer_stop (EV_A_ &w->timer); 3494 ev_timer_stop (EV_A_ &w->timer);
3495 }
3167 3496
3168 ev_stop (EV_A_ (W)w); 3497 ev_stop (EV_A_ (W)w);
3169 3498
3170 EV_FREQUENT_CHECK; 3499 EV_FREQUENT_CHECK;
3171} 3500}
… …
3216 3545
3217 EV_FREQUENT_CHECK; 3546 EV_FREQUENT_CHECK;
3218} 3547}
3219#endif 3548#endif
3220 3549
3550#if EV_PREPARE_ENABLE
3221void 3551void
3222ev_prepare_start (EV_P_ ev_prepare *w) 3552ev_prepare_start (EV_P_ ev_prepare *w)
3223{ 3553{
3224 if (expect_false (ev_is_active (w))) 3554 if (expect_false (ev_is_active (w)))
3225 return; 3555 return;
… …
3251 3581
3252 ev_stop (EV_A_ (W)w); 3582 ev_stop (EV_A_ (W)w);
3253 3583
3254 EV_FREQUENT_CHECK; 3584 EV_FREQUENT_CHECK;
3255} 3585}
3586#endif
3256 3587
3588#if EV_CHECK_ENABLE
3257void 3589void
3258ev_check_start (EV_P_ ev_check *w) 3590ev_check_start (EV_P_ ev_check *w)
3259{ 3591{
3260 if (expect_false (ev_is_active (w))) 3592 if (expect_false (ev_is_active (w)))
3261 return; 3593 return;
… …
3287 3619
3288 ev_stop (EV_A_ (W)w); 3620 ev_stop (EV_A_ (W)w);
3289 3621
3290 EV_FREQUENT_CHECK; 3622 EV_FREQUENT_CHECK;
3291} 3623}
3624#endif
3292 3625
3293#if EV_EMBED_ENABLE 3626#if EV_EMBED_ENABLE
3294void noinline 3627void noinline
3295ev_embed_sweep (EV_P_ ev_embed *w) 3628ev_embed_sweep (EV_P_ ev_embed *w)
3296{ 3629{
3297 ev_loop (w->other, EVLOOP_NONBLOCK); 3630 ev_run (w->other, EVRUN_NOWAIT);
3298} 3631}
3299 3632
3300static void 3633static void
3301embed_io_cb (EV_P_ ev_io *io, int revents) 3634embed_io_cb (EV_P_ ev_io *io, int revents)
3302{ 3635{
3303 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3636 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3304 3637
3305 if (ev_cb (w)) 3638 if (ev_cb (w))
3306 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3639 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3307 else 3640 else
3308 ev_loop (w->other, EVLOOP_NONBLOCK); 3641 ev_run (w->other, EVRUN_NOWAIT);
3309} 3642}
3310 3643
3311static void 3644static void
3312embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3645embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3313{ 3646{
… …
3317 EV_P = w->other; 3650 EV_P = w->other;
3318 3651
3319 while (fdchangecnt) 3652 while (fdchangecnt)
3320 { 3653 {
3321 fd_reify (EV_A); 3654 fd_reify (EV_A);
3322 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3655 ev_run (EV_A_ EVRUN_NOWAIT);
3323 } 3656 }
3324 } 3657 }
3325} 3658}
3326 3659
3327static void 3660static void
… …
3333 3666
3334 { 3667 {
3335 EV_P = w->other; 3668 EV_P = w->other;
3336 3669
3337 ev_loop_fork (EV_A); 3670 ev_loop_fork (EV_A);
3338 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3671 ev_run (EV_A_ EVRUN_NOWAIT);
3339 } 3672 }
3340 3673
3341 ev_embed_start (EV_A_ w); 3674 ev_embed_start (EV_A_ w);
3342} 3675}
3343 3676
… …
3391 3724
3392 ev_io_stop (EV_A_ &w->io); 3725 ev_io_stop (EV_A_ &w->io);
3393 ev_prepare_stop (EV_A_ &w->prepare); 3726 ev_prepare_stop (EV_A_ &w->prepare);
3394 ev_fork_stop (EV_A_ &w->fork); 3727 ev_fork_stop (EV_A_ &w->fork);
3395 3728
3729 ev_stop (EV_A_ (W)w);
3730
3396 EV_FREQUENT_CHECK; 3731 EV_FREQUENT_CHECK;
3397} 3732}
3398#endif 3733#endif
3399 3734
3400#if EV_FORK_ENABLE 3735#if EV_FORK_ENABLE
… …
3433 3768
3434 EV_FREQUENT_CHECK; 3769 EV_FREQUENT_CHECK;
3435} 3770}
3436#endif 3771#endif
3437 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
3438#if EV_ASYNC_ENABLE 3814#if EV_ASYNC_ENABLE
3439void 3815void
3440ev_async_start (EV_P_ ev_async *w) 3816ev_async_start (EV_P_ ev_async *w)
3441{ 3817{
3442 if (expect_false (ev_is_active (w))) 3818 if (expect_false (ev_is_active (w)))
3443 return; 3819 return;
3820
3821 w->sent = 0;
3444 3822
3445 evpipe_init (EV_A); 3823 evpipe_init (EV_A);
3446 3824
3447 EV_FREQUENT_CHECK; 3825 EV_FREQUENT_CHECK;
3448 3826
… …
3526{ 3904{
3527 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));
3528 3906
3529 if (expect_false (!once)) 3907 if (expect_false (!once))
3530 { 3908 {
3531 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3909 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3532 return; 3910 return;
3533 } 3911 }
3534 3912
3535 once->cb = cb; 3913 once->cb = cb;
3536 once->arg = arg; 3914 once->arg = arg;
… …
3551} 3929}
3552 3930
3553/*****************************************************************************/ 3931/*****************************************************************************/
3554 3932
3555#if EV_WALK_ENABLE 3933#if EV_WALK_ENABLE
3556void 3934void ecb_cold
3557ev_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))
3558{ 3936{
3559 int i, j; 3937 int i, j;
3560 ev_watcher_list *wl, *wn; 3938 ev_watcher_list *wl, *wn;
3561 3939
… …
3623 if (types & EV_ASYNC) 4001 if (types & EV_ASYNC)
3624 for (i = asynccnt; i--; ) 4002 for (i = asynccnt; i--; )
3625 cb (EV_A_ EV_ASYNC, asyncs [i]); 4003 cb (EV_A_ EV_ASYNC, asyncs [i]);
3626#endif 4004#endif
3627 4005
4006#if EV_PREPARE_ENABLE
3628 if (types & EV_PREPARE) 4007 if (types & EV_PREPARE)
3629 for (i = preparecnt; i--; ) 4008 for (i = preparecnt; i--; )
3630#if EV_EMBED_ENABLE 4009# if EV_EMBED_ENABLE
3631 if (ev_cb (prepares [i]) != embed_prepare_cb) 4010 if (ev_cb (prepares [i]) != embed_prepare_cb)
3632#endif 4011# endif
3633 cb (EV_A_ EV_PREPARE, prepares [i]); 4012 cb (EV_A_ EV_PREPARE, prepares [i]);
4013#endif
3634 4014
4015#if EV_CHECK_ENABLE
3635 if (types & EV_CHECK) 4016 if (types & EV_CHECK)
3636 for (i = checkcnt; i--; ) 4017 for (i = checkcnt; i--; )
3637 cb (EV_A_ EV_CHECK, checks [i]); 4018 cb (EV_A_ EV_CHECK, checks [i]);
4019#endif
3638 4020
4021#if EV_SIGNAL_ENABLE
3639 if (types & EV_SIGNAL) 4022 if (types & EV_SIGNAL)
3640 for (i = 0; i < EV_NSIG - 1; ++i) 4023 for (i = 0; i < EV_NSIG - 1; ++i)
3641 for (wl = signals [i].head; wl; ) 4024 for (wl = signals [i].head; wl; )
3642 { 4025 {
3643 wn = wl->next; 4026 wn = wl->next;
3644 cb (EV_A_ EV_SIGNAL, wl); 4027 cb (EV_A_ EV_SIGNAL, wl);
3645 wl = wn; 4028 wl = wn;
3646 } 4029 }
4030#endif
3647 4031
4032#if EV_CHILD_ENABLE
3648 if (types & EV_CHILD) 4033 if (types & EV_CHILD)
3649 for (i = EV_PID_HASHSIZE; i--; ) 4034 for (i = (EV_PID_HASHSIZE); i--; )
3650 for (wl = childs [i]; wl; ) 4035 for (wl = childs [i]; wl; )
3651 { 4036 {
3652 wn = wl->next; 4037 wn = wl->next;
3653 cb (EV_A_ EV_CHILD, wl); 4038 cb (EV_A_ EV_CHILD, wl);
3654 wl = wn; 4039 wl = wn;
3655 } 4040 }
4041#endif
3656/* EV_STAT 0x00001000 /* stat data changed */ 4042/* EV_STAT 0x00001000 /* stat data changed */
3657/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4043/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3658} 4044}
3659#endif 4045#endif
3660 4046
3661#if EV_MULTIPLICITY 4047#if EV_MULTIPLICITY
3662 #include "ev_wrap.h" 4048 #include "ev_wrap.h"
3663#endif 4049#endif
3664 4050
3665#ifdef __cplusplus 4051EV_CPP(})
3666}
3667#endif
3668 4052

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