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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 1.398 by root, Sun Sep 25 21:27:35 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
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
468
469/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ECB.H BEGIN */
471/*
472 * libecb - http://software.schmorp.de/pkg/libecb
473 *
474 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de>
475 * Copyright (©) 2011 Emanuele Giaquinta
476 * All rights reserved.
477 *
478 * Redistribution and use in source and binary forms, with or without modifica-
479 * tion, are permitted provided that the following conditions are met:
480 *
481 * 1. Redistributions of source code must retain the above copyright notice,
482 * this list of conditions and the following disclaimer.
483 *
484 * 2. Redistributions in binary form must reproduce the above copyright
485 * notice, this list of conditions and the following disclaimer in the
486 * documentation and/or other materials provided with the distribution.
487 *
488 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
489 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
490 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
491 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
492 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
493 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
494 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
495 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
496 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
497 * OF THE POSSIBILITY OF SUCH DAMAGE.
498 */
499
500#ifndef ECB_H
501#define ECB_H
502
503#ifdef _WIN32
504 typedef signed char int8_t;
505 typedef unsigned char uint8_t;
506 typedef signed short int16_t;
507 typedef unsigned short uint16_t;
508 typedef signed int int32_t;
509 typedef unsigned int uint32_t;
456#if __GNUC__ >= 4 510 #if __GNUC__
457# define expect(expr,value) __builtin_expect ((expr),(value)) 511 typedef signed long long int64_t;
458# define noinline __attribute__ ((noinline)) 512 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t;
516 #endif
459#else 517#else
460# define expect(expr,value) (expr) 518 #include <inttypes.h>
461# define noinline
462# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
463# define inline
464# endif 519#endif
520
521/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so.
525 * we try to detect these and simply assume they are not gcc - if they have
526 * an issue with that they should have done it right in the first place.
527 */
528#ifndef ECB_GCC_VERSION
529 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
530 #define ECB_GCC_VERSION(major,minor) 0
531 #else
532 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
465#endif 533 #endif
534#endif
466 535
536/*****************************************************************************/
537
538/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
539/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
540
541#if ECB_NO_THREADS || ECB_NO_SMP
542 #define ECB_MEMORY_FENCE do { } while (0)
543#endif
544
545#ifndef ECB_MEMORY_FENCE
546 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__)
547 #if __i386__
548 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
549 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
550 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
551 #elif __amd64
552 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
553 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
554 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
555 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
556 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
557 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \
558 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__)
559 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
560 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \
561 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ )
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
563 #endif
564 #endif
565#endif
566
567#ifndef ECB_MEMORY_FENCE
568 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
569 #define ECB_MEMORY_FENCE __sync_synchronize ()
570 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
571 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
572 #elif _MSC_VER >= 1400 /* VC++ 2005 */
573 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
574 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
575 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
576 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
577 #elif defined(_WIN32)
578 #include <WinNT.h>
579 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
580 #endif
581#endif
582
583#ifndef ECB_MEMORY_FENCE
584 #if !ECB_AVOID_PTHREADS
585 /*
586 * if you get undefined symbol references to pthread_mutex_lock,
587 * or failure to find pthread.h, then you should implement
588 * the ECB_MEMORY_FENCE operations for your cpu/compiler
589 * OR provide pthread.h and link against the posix thread library
590 * of your system.
591 */
592 #include <pthread.h>
593 #define ECB_NEEDS_PTHREADS 1
594 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
595
596 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
597 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
598 #endif
599#endif
600
601#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
602 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
603#endif
604
605#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
606 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
607#endif
608
609/*****************************************************************************/
610
611#define ECB_C99 (__STDC_VERSION__ >= 199901L)
612
613#if __cplusplus
614 #define ecb_inline static inline
615#elif ECB_GCC_VERSION(2,5)
616 #define ecb_inline static __inline__
617#elif ECB_C99
618 #define ecb_inline static inline
619#else
620 #define ecb_inline static
621#endif
622
623#if ECB_GCC_VERSION(3,3)
624 #define ecb_restrict __restrict__
625#elif ECB_C99
626 #define ecb_restrict restrict
627#else
628 #define ecb_restrict
629#endif
630
631typedef int ecb_bool;
632
633#define ECB_CONCAT_(a, b) a ## b
634#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
635#define ECB_STRINGIFY_(a) # a
636#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
637
638#define ecb_function_ ecb_inline
639
640#if ECB_GCC_VERSION(3,1)
641 #define ecb_attribute(attrlist) __attribute__(attrlist)
642 #define ecb_is_constant(expr) __builtin_constant_p (expr)
643 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
644 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
645#else
646 #define ecb_attribute(attrlist)
647 #define ecb_is_constant(expr) 0
648 #define ecb_expect(expr,value) (expr)
649 #define ecb_prefetch(addr,rw,locality)
650#endif
651
652/* no emulation for ecb_decltype */
653#if ECB_GCC_VERSION(4,5)
654 #define ecb_decltype(x) __decltype(x)
655#elif ECB_GCC_VERSION(3,0)
656 #define ecb_decltype(x) __typeof(x)
657#endif
658
659#define ecb_noinline ecb_attribute ((__noinline__))
660#define ecb_noreturn ecb_attribute ((__noreturn__))
661#define ecb_unused ecb_attribute ((__unused__))
662#define ecb_const ecb_attribute ((__const__))
663#define ecb_pure ecb_attribute ((__pure__))
664
665#if ECB_GCC_VERSION(4,3)
666 #define ecb_artificial ecb_attribute ((__artificial__))
667 #define ecb_hot ecb_attribute ((__hot__))
668 #define ecb_cold ecb_attribute ((__cold__))
669#else
670 #define ecb_artificial
671 #define ecb_hot
672 #define ecb_cold
673#endif
674
675/* put around conditional expressions if you are very sure that the */
676/* expression is mostly true or mostly false. note that these return */
677/* booleans, not the expression. */
467#define expect_false(expr) expect ((expr) != 0, 0) 678#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
468#define expect_true(expr) expect ((expr) != 0, 1) 679#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
680/* for compatibility to the rest of the world */
681#define ecb_likely(expr) ecb_expect_true (expr)
682#define ecb_unlikely(expr) ecb_expect_false (expr)
683
684/* count trailing zero bits and count # of one bits */
685#if ECB_GCC_VERSION(3,4)
686 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
687 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
688 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
689 #define ecb_ctz32(x) __builtin_ctz (x)
690 #define ecb_ctz64(x) __builtin_ctzll (x)
691 #define ecb_popcount32(x) __builtin_popcount (x)
692 /* no popcountll */
693#else
694 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
695 ecb_function_ int
696 ecb_ctz32 (uint32_t x)
697 {
698 int r = 0;
699
700 x &= ~x + 1; /* this isolates the lowest bit */
701
702#if ECB_branchless_on_i386
703 r += !!(x & 0xaaaaaaaa) << 0;
704 r += !!(x & 0xcccccccc) << 1;
705 r += !!(x & 0xf0f0f0f0) << 2;
706 r += !!(x & 0xff00ff00) << 3;
707 r += !!(x & 0xffff0000) << 4;
708#else
709 if (x & 0xaaaaaaaa) r += 1;
710 if (x & 0xcccccccc) r += 2;
711 if (x & 0xf0f0f0f0) r += 4;
712 if (x & 0xff00ff00) r += 8;
713 if (x & 0xffff0000) r += 16;
714#endif
715
716 return r;
717 }
718
719 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
720 ecb_function_ int
721 ecb_ctz64 (uint64_t x)
722 {
723 int shift = x & 0xffffffffU ? 0 : 32;
724 return ecb_ctz32 (x >> shift) + shift;
725 }
726
727 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
728 ecb_function_ int
729 ecb_popcount32 (uint32_t x)
730 {
731 x -= (x >> 1) & 0x55555555;
732 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
733 x = ((x >> 4) + x) & 0x0f0f0f0f;
734 x *= 0x01010101;
735
736 return x >> 24;
737 }
738
739 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
740 ecb_function_ int ecb_ld32 (uint32_t x)
741 {
742 int r = 0;
743
744 if (x >> 16) { x >>= 16; r += 16; }
745 if (x >> 8) { x >>= 8; r += 8; }
746 if (x >> 4) { x >>= 4; r += 4; }
747 if (x >> 2) { x >>= 2; r += 2; }
748 if (x >> 1) { r += 1; }
749
750 return r;
751 }
752
753 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
754 ecb_function_ int ecb_ld64 (uint64_t x)
755 {
756 int r = 0;
757
758 if (x >> 32) { x >>= 32; r += 32; }
759
760 return r + ecb_ld32 (x);
761 }
762#endif
763
764/* popcount64 is only available on 64 bit cpus as gcc builtin */
765/* so for this version we are lazy */
766ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
767ecb_function_ int
768ecb_popcount64 (uint64_t x)
769{
770 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
771}
772
773ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
774ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
775ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
776ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
777ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
778ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
779ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
780ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
781
782ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
783ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
784ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
785ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
786ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
787ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
788ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
789ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
790
791#if ECB_GCC_VERSION(4,3)
792 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
793 #define ecb_bswap32(x) __builtin_bswap32 (x)
794 #define ecb_bswap64(x) __builtin_bswap64 (x)
795#else
796 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
797 ecb_function_ uint16_t
798 ecb_bswap16 (uint16_t x)
799 {
800 return ecb_rotl16 (x, 8);
801 }
802
803 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
804 ecb_function_ uint32_t
805 ecb_bswap32 (uint32_t x)
806 {
807 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
808 }
809
810 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
811 ecb_function_ uint64_t
812 ecb_bswap64 (uint64_t x)
813 {
814 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
815 }
816#endif
817
818#if ECB_GCC_VERSION(4,5)
819 #define ecb_unreachable() __builtin_unreachable ()
820#else
821 /* this seems to work fine, but gcc always emits a warning for it :/ */
822 ecb_function_ void ecb_unreachable (void) ecb_noreturn;
823 ecb_function_ void ecb_unreachable (void) { }
824#endif
825
826/* try to tell the compiler that some condition is definitely true */
827#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
828
829ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
830ecb_function_ unsigned char
831ecb_byteorder_helper (void)
832{
833 const uint32_t u = 0x11223344;
834 return *(unsigned char *)&u;
835}
836
837ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
838ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
839ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
840ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
841
842#if ECB_GCC_VERSION(3,0) || ECB_C99
843 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
844#else
845 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
846#endif
847
848#if __cplusplus
849 template<typename T>
850 static inline T ecb_div_rd (T val, T div)
851 {
852 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
853 }
854 template<typename T>
855 static inline T ecb_div_ru (T val, T div)
856 {
857 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
858 }
859#else
860 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
861 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
862#endif
863
864#if ecb_cplusplus_does_not_suck
865 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
866 template<typename T, int N>
867 static inline int ecb_array_length (const T (&arr)[N])
868 {
869 return N;
870 }
871#else
872 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
873#endif
874
875#endif
876
877/* ECB.H END */
878
879#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
880/* if your architecture doesn't need memory fences, e.g. because it is
881 * single-cpu/core, or if you use libev in a project that doesn't use libev
882 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
883 * libev, in which casess the memory fences become nops.
884 * alternatively, you can remove this #error and link against libpthread,
885 * which will then provide the memory fences.
886 */
887# error "memory fences not defined for your architecture, please report"
888#endif
889
890#ifndef ECB_MEMORY_FENCE
891# define ECB_MEMORY_FENCE do { } while (0)
892# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
893# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
894#endif
895
896#define expect_false(cond) ecb_expect_false (cond)
897#define expect_true(cond) ecb_expect_true (cond)
898#define noinline ecb_noinline
899
469#define inline_size static inline 900#define inline_size ecb_inline
470 901
471#if EV_MINIMAL 902#if EV_FEATURE_CODE
903# define inline_speed ecb_inline
904#else
472# define inline_speed static noinline 905# define inline_speed static noinline
473#else
474# define inline_speed static inline
475#endif 906#endif
476 907
477#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 908#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
478 909
479#if EV_MINPRI == EV_MAXPRI 910#if EV_MINPRI == EV_MAXPRI
… …
492#define ev_active(w) ((W)(w))->active 923#define ev_active(w) ((W)(w))->active
493#define ev_at(w) ((WT)(w))->at 924#define ev_at(w) ((WT)(w))->at
494 925
495#if EV_USE_REALTIME 926#if EV_USE_REALTIME
496/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 927/* 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 */ 928/* giving it a reasonably high chance of working on typical architectures */
498static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 929static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
499#endif 930#endif
500 931
501#if EV_USE_MONOTONIC 932#if EV_USE_MONOTONIC
502static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 933static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
504 935
505#ifndef EV_FD_TO_WIN32_HANDLE 936#ifndef EV_FD_TO_WIN32_HANDLE
506# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) 937# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
507#endif 938#endif
508#ifndef EV_WIN32_HANDLE_TO_FD 939#ifndef EV_WIN32_HANDLE_TO_FD
509# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) 940# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
510#endif 941#endif
511#ifndef EV_WIN32_CLOSE_FD 942#ifndef EV_WIN32_CLOSE_FD
512# define EV_WIN32_CLOSE_FD(fd) close (fd) 943# define EV_WIN32_CLOSE_FD(fd) close (fd)
513#endif 944#endif
514 945
… …
516# include "ev_win32.c" 947# include "ev_win32.c"
517#endif 948#endif
518 949
519/*****************************************************************************/ 950/*****************************************************************************/
520 951
952/* define a suitable floor function (only used by periodics atm) */
953
954#if EV_USE_FLOOR
955# include <math.h>
956# define ev_floor(v) floor (v)
957#else
958
959#include <float.h>
960
961/* a floor() replacement function, should be independent of ev_tstamp type */
962static ev_tstamp noinline
963ev_floor (ev_tstamp v)
964{
965 /* the choice of shift factor is not terribly important */
966#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
967 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
968#else
969 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
970#endif
971
972 /* argument too large for an unsigned long? */
973 if (expect_false (v >= shift))
974 {
975 ev_tstamp f;
976
977 if (v == v - 1.)
978 return v; /* very large number */
979
980 f = shift * ev_floor (v * (1. / shift));
981 return f + ev_floor (v - f);
982 }
983
984 /* special treatment for negative args? */
985 if (expect_false (v < 0.))
986 {
987 ev_tstamp f = -ev_floor (-v);
988
989 return f - (f == v ? 0 : 1);
990 }
991
992 /* fits into an unsigned long */
993 return (unsigned long)v;
994}
995
996#endif
997
998/*****************************************************************************/
999
1000#ifdef __linux
1001# include <sys/utsname.h>
1002#endif
1003
1004static unsigned int noinline ecb_cold
1005ev_linux_version (void)
1006{
1007#ifdef __linux
1008 unsigned int v = 0;
1009 struct utsname buf;
1010 int i;
1011 char *p = buf.release;
1012
1013 if (uname (&buf))
1014 return 0;
1015
1016 for (i = 3+1; --i; )
1017 {
1018 unsigned int c = 0;
1019
1020 for (;;)
1021 {
1022 if (*p >= '0' && *p <= '9')
1023 c = c * 10 + *p++ - '0';
1024 else
1025 {
1026 p += *p == '.';
1027 break;
1028 }
1029 }
1030
1031 v = (v << 8) | c;
1032 }
1033
1034 return v;
1035#else
1036 return 0;
1037#endif
1038}
1039
1040/*****************************************************************************/
1041
1042#if EV_AVOID_STDIO
1043static void noinline ecb_cold
1044ev_printerr (const char *msg)
1045{
1046 write (STDERR_FILENO, msg, strlen (msg));
1047}
1048#endif
1049
521static void (*syserr_cb)(const char *msg); 1050static void (*syserr_cb)(const char *msg);
522 1051
523void 1052void ecb_cold
524ev_set_syserr_cb (void (*cb)(const char *msg)) 1053ev_set_syserr_cb (void (*cb)(const char *msg))
525{ 1054{
526 syserr_cb = cb; 1055 syserr_cb = cb;
527} 1056}
528 1057
529static void noinline 1058static void noinline ecb_cold
530ev_syserr (const char *msg) 1059ev_syserr (const char *msg)
531{ 1060{
532 if (!msg) 1061 if (!msg)
533 msg = "(libev) system error"; 1062 msg = "(libev) system error";
534 1063
535 if (syserr_cb) 1064 if (syserr_cb)
536 syserr_cb (msg); 1065 syserr_cb (msg);
537 else 1066 else
538 { 1067 {
1068#if EV_AVOID_STDIO
1069 ev_printerr (msg);
1070 ev_printerr (": ");
1071 ev_printerr (strerror (errno));
1072 ev_printerr ("\n");
1073#else
539 perror (msg); 1074 perror (msg);
1075#endif
540 abort (); 1076 abort ();
541 } 1077 }
542} 1078}
543 1079
544static void * 1080static void *
545ev_realloc_emul (void *ptr, long size) 1081ev_realloc_emul (void *ptr, long size)
546{ 1082{
1083#if __GLIBC__
1084 return realloc (ptr, size);
1085#else
547 /* some systems, notably openbsd and darwin, fail to properly 1086 /* some systems, notably openbsd and darwin, fail to properly
548 * implement realloc (x, 0) (as required by both ansi c-98 and 1087 * implement realloc (x, 0) (as required by both ansi c-89 and
549 * the single unix specification, so work around them here. 1088 * the single unix specification, so work around them here.
550 */ 1089 */
551 1090
552 if (size) 1091 if (size)
553 return realloc (ptr, size); 1092 return realloc (ptr, size);
554 1093
555 free (ptr); 1094 free (ptr);
556 return 0; 1095 return 0;
1096#endif
557} 1097}
558 1098
559static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1099static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
560 1100
561void 1101void ecb_cold
562ev_set_allocator (void *(*cb)(void *ptr, long size)) 1102ev_set_allocator (void *(*cb)(void *ptr, long size))
563{ 1103{
564 alloc = cb; 1104 alloc = cb;
565} 1105}
566 1106
… …
569{ 1109{
570 ptr = alloc (ptr, size); 1110 ptr = alloc (ptr, size);
571 1111
572 if (!ptr && size) 1112 if (!ptr && size)
573 { 1113 {
1114#if EV_AVOID_STDIO
1115 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1116#else
574 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1117 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1118#endif
575 abort (); 1119 abort ();
576 } 1120 }
577 1121
578 return ptr; 1122 return ptr;
579} 1123}
… …
595 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1139 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
596 unsigned char unused; 1140 unsigned char unused;
597#if EV_USE_EPOLL 1141#if EV_USE_EPOLL
598 unsigned int egen; /* generation counter to counter epoll bugs */ 1142 unsigned int egen; /* generation counter to counter epoll bugs */
599#endif 1143#endif
600#if EV_SELECT_IS_WINSOCKET 1144#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
601 SOCKET handle; 1145 SOCKET handle;
1146#endif
1147#if EV_USE_IOCP
1148 OVERLAPPED or, ow;
602#endif 1149#endif
603} ANFD; 1150} ANFD;
604 1151
605/* stores the pending event set for a given watcher */ 1152/* stores the pending event set for a given watcher */
606typedef struct 1153typedef struct
… …
661 1208
662 static int ev_default_loop_ptr; 1209 static int ev_default_loop_ptr;
663 1210
664#endif 1211#endif
665 1212
666#if EV_MINIMAL < 2 1213#if EV_FEATURE_API
667# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1214# 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) 1215# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
669# define EV_INVOKE_PENDING invoke_cb (EV_A) 1216# define EV_INVOKE_PENDING invoke_cb (EV_A)
670#else 1217#else
671# define EV_RELEASE_CB (void)0 1218# define EV_RELEASE_CB (void)0
672# define EV_ACQUIRE_CB (void)0 1219# define EV_ACQUIRE_CB (void)0
673# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1220# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
674#endif 1221#endif
675 1222
676#define EVUNLOOP_RECURSE 0x80 1223#define EVBREAK_RECURSE 0x80
677 1224
678/*****************************************************************************/ 1225/*****************************************************************************/
679 1226
680#ifndef EV_HAVE_EV_TIME 1227#ifndef EV_HAVE_EV_TIME
681ev_tstamp 1228ev_tstamp
… …
725 if (delay > 0.) 1272 if (delay > 0.)
726 { 1273 {
727#if EV_USE_NANOSLEEP 1274#if EV_USE_NANOSLEEP
728 struct timespec ts; 1275 struct timespec ts;
729 1276
730 ts.tv_sec = (time_t)delay; 1277 EV_TS_SET (ts, delay);
731 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
732
733 nanosleep (&ts, 0); 1278 nanosleep (&ts, 0);
734#elif defined(_WIN32) 1279#elif defined(_WIN32)
735 Sleep ((unsigned long)(delay * 1e3)); 1280 Sleep ((unsigned long)(delay * 1e3));
736#else 1281#else
737 struct timeval tv; 1282 struct timeval tv;
738 1283
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 */ 1284 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
743 /* something not guaranteed by newer posix versions, but guaranteed */ 1285 /* something not guaranteed by newer posix versions, but guaranteed */
744 /* by older ones */ 1286 /* by older ones */
1287 EV_TV_SET (tv, delay);
745 select (0, 0, 0, 0, &tv); 1288 select (0, 0, 0, 0, &tv);
746#endif 1289#endif
747 } 1290 }
748} 1291}
749 1292
750/*****************************************************************************/ 1293/*****************************************************************************/
751 1294
752#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1295#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
753 1296
754/* find a suitable new size for the given array, */ 1297/* find a suitable new size for the given array, */
755/* hopefully by rounding to a ncie-to-malloc size */ 1298/* hopefully by rounding to a nice-to-malloc size */
756inline_size int 1299inline_size int
757array_nextsize (int elem, int cur, int cnt) 1300array_nextsize (int elem, int cur, int cnt)
758{ 1301{
759 int ncur = cur + 1; 1302 int ncur = cur + 1;
760 1303
… …
772 } 1315 }
773 1316
774 return ncur; 1317 return ncur;
775} 1318}
776 1319
777static noinline void * 1320static void * noinline ecb_cold
778array_realloc (int elem, void *base, int *cur, int cnt) 1321array_realloc (int elem, void *base, int *cur, int cnt)
779{ 1322{
780 *cur = array_nextsize (elem, *cur, cnt); 1323 *cur = array_nextsize (elem, *cur, cnt);
781 return ev_realloc (base, elem * *cur); 1324 return ev_realloc (base, elem * *cur);
782} 1325}
… …
785 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1328 memset ((void *)(base), 0, sizeof (*(base)) * (count))
786 1329
787#define array_needsize(type,base,cur,cnt,init) \ 1330#define array_needsize(type,base,cur,cnt,init) \
788 if (expect_false ((cnt) > (cur))) \ 1331 if (expect_false ((cnt) > (cur))) \
789 { \ 1332 { \
790 int ocur_ = (cur); \ 1333 int ecb_unused ocur_ = (cur); \
791 (base) = (type *)array_realloc \ 1334 (base) = (type *)array_realloc \
792 (sizeof (type), (base), &(cur), (cnt)); \ 1335 (sizeof (type), (base), &(cur), (cnt)); \
793 init ((base) + (ocur_), (cur) - ocur_); \ 1336 init ((base) + (ocur_), (cur) - ocur_); \
794 } 1337 }
795 1338
… …
856} 1399}
857 1400
858/*****************************************************************************/ 1401/*****************************************************************************/
859 1402
860inline_speed void 1403inline_speed void
861fd_event_nc (EV_P_ int fd, int revents) 1404fd_event_nocheck (EV_P_ int fd, int revents)
862{ 1405{
863 ANFD *anfd = anfds + fd; 1406 ANFD *anfd = anfds + fd;
864 ev_io *w; 1407 ev_io *w;
865 1408
866 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1409 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
878fd_event (EV_P_ int fd, int revents) 1421fd_event (EV_P_ int fd, int revents)
879{ 1422{
880 ANFD *anfd = anfds + fd; 1423 ANFD *anfd = anfds + fd;
881 1424
882 if (expect_true (!anfd->reify)) 1425 if (expect_true (!anfd->reify))
883 fd_event_nc (EV_A_ fd, revents); 1426 fd_event_nocheck (EV_A_ fd, revents);
884} 1427}
885 1428
886void 1429void
887ev_feed_fd_event (EV_P_ int fd, int revents) 1430ev_feed_fd_event (EV_P_ int fd, int revents)
888{ 1431{
889 if (fd >= 0 && fd < anfdmax) 1432 if (fd >= 0 && fd < anfdmax)
890 fd_event_nc (EV_A_ fd, revents); 1433 fd_event_nocheck (EV_A_ fd, revents);
891} 1434}
892 1435
893/* make sure the external fd watch events are in-sync */ 1436/* make sure the external fd watch events are in-sync */
894/* with the kernel/libev internal state */ 1437/* with the kernel/libev internal state */
895inline_size void 1438inline_size void
896fd_reify (EV_P) 1439fd_reify (EV_P)
897{ 1440{
898 int i; 1441 int i;
899 1442
1443#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1444 for (i = 0; i < fdchangecnt; ++i)
1445 {
1446 int fd = fdchanges [i];
1447 ANFD *anfd = anfds + fd;
1448
1449 if (anfd->reify & EV__IOFDSET && anfd->head)
1450 {
1451 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1452
1453 if (handle != anfd->handle)
1454 {
1455 unsigned long arg;
1456
1457 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1458
1459 /* handle changed, but fd didn't - we need to do it in two steps */
1460 backend_modify (EV_A_ fd, anfd->events, 0);
1461 anfd->events = 0;
1462 anfd->handle = handle;
1463 }
1464 }
1465 }
1466#endif
1467
900 for (i = 0; i < fdchangecnt; ++i) 1468 for (i = 0; i < fdchangecnt; ++i)
901 { 1469 {
902 int fd = fdchanges [i]; 1470 int fd = fdchanges [i];
903 ANFD *anfd = anfds + fd; 1471 ANFD *anfd = anfds + fd;
904 ev_io *w; 1472 ev_io *w;
905 1473
906 unsigned char events = 0; 1474 unsigned char o_events = anfd->events;
1475 unsigned char o_reify = anfd->reify;
907 1476
908 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1477 anfd->reify = 0;
909 events |= (unsigned char)w->events;
910 1478
911#if EV_SELECT_IS_WINSOCKET 1479 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
912 if (events)
913 { 1480 {
914 unsigned long arg; 1481 anfd->events = 0;
915 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1482
916 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1483 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1484 anfd->events |= (unsigned char)w->events;
1485
1486 if (o_events != anfd->events)
1487 o_reify = EV__IOFDSET; /* actually |= */
917 } 1488 }
918#endif
919 1489
920 { 1490 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); 1491 backend_modify (EV_A_ fd, o_events, anfd->events);
929 }
930 } 1492 }
931 1493
932 fdchangecnt = 0; 1494 fdchangecnt = 0;
933} 1495}
934 1496
… …
946 fdchanges [fdchangecnt - 1] = fd; 1508 fdchanges [fdchangecnt - 1] = fd;
947 } 1509 }
948} 1510}
949 1511
950/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1512/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
951inline_speed void 1513inline_speed void ecb_cold
952fd_kill (EV_P_ int fd) 1514fd_kill (EV_P_ int fd)
953{ 1515{
954 ev_io *w; 1516 ev_io *w;
955 1517
956 while ((w = (ev_io *)anfds [fd].head)) 1518 while ((w = (ev_io *)anfds [fd].head))
… …
958 ev_io_stop (EV_A_ w); 1520 ev_io_stop (EV_A_ w);
959 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1521 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
960 } 1522 }
961} 1523}
962 1524
963/* check whether the given fd is atcually valid, for error recovery */ 1525/* check whether the given fd is actually valid, for error recovery */
964inline_size int 1526inline_size int ecb_cold
965fd_valid (int fd) 1527fd_valid (int fd)
966{ 1528{
967#ifdef _WIN32 1529#ifdef _WIN32
968 return _get_osfhandle (fd) != -1; 1530 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
969#else 1531#else
970 return fcntl (fd, F_GETFD) != -1; 1532 return fcntl (fd, F_GETFD) != -1;
971#endif 1533#endif
972} 1534}
973 1535
974/* called on EBADF to verify fds */ 1536/* called on EBADF to verify fds */
975static void noinline 1537static void noinline ecb_cold
976fd_ebadf (EV_P) 1538fd_ebadf (EV_P)
977{ 1539{
978 int fd; 1540 int fd;
979 1541
980 for (fd = 0; fd < anfdmax; ++fd) 1542 for (fd = 0; fd < anfdmax; ++fd)
… …
982 if (!fd_valid (fd) && errno == EBADF) 1544 if (!fd_valid (fd) && errno == EBADF)
983 fd_kill (EV_A_ fd); 1545 fd_kill (EV_A_ fd);
984} 1546}
985 1547
986/* called on ENOMEM in select/poll to kill some fds and retry */ 1548/* called on ENOMEM in select/poll to kill some fds and retry */
987static void noinline 1549static void noinline ecb_cold
988fd_enomem (EV_P) 1550fd_enomem (EV_P)
989{ 1551{
990 int fd; 1552 int fd;
991 1553
992 for (fd = anfdmax; fd--; ) 1554 for (fd = anfdmax; fd--; )
… …
1010 anfds [fd].emask = 0; 1572 anfds [fd].emask = 0;
1011 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1573 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1012 } 1574 }
1013} 1575}
1014 1576
1577/* used to prepare libev internal fd's */
1578/* this is not fork-safe */
1579inline_speed void
1580fd_intern (int fd)
1581{
1582#ifdef _WIN32
1583 unsigned long arg = 1;
1584 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1585#else
1586 fcntl (fd, F_SETFD, FD_CLOEXEC);
1587 fcntl (fd, F_SETFL, O_NONBLOCK);
1588#endif
1589}
1590
1015/*****************************************************************************/ 1591/*****************************************************************************/
1016 1592
1017/* 1593/*
1018 * the heap functions want a real array index. array index 0 uis guaranteed to not 1594 * 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 1595 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1020 * the branching factor of the d-tree. 1596 * the branching factor of the d-tree.
1021 */ 1597 */
1022 1598
1023/* 1599/*
… …
1171 1747
1172static ANSIG signals [EV_NSIG - 1]; 1748static ANSIG signals [EV_NSIG - 1];
1173 1749
1174/*****************************************************************************/ 1750/*****************************************************************************/
1175 1751
1176/* used to prepare libev internal fd's */ 1752#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 1753
1190static void noinline 1754static void noinline ecb_cold
1191evpipe_init (EV_P) 1755evpipe_init (EV_P)
1192{ 1756{
1193 if (!ev_is_active (&pipe_w)) 1757 if (!ev_is_active (&pipe_w))
1194 { 1758 {
1195#if EV_USE_EVENTFD 1759# if EV_USE_EVENTFD
1196 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1760 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1197 if (evfd < 0 && errno == EINVAL) 1761 if (evfd < 0 && errno == EINVAL)
1198 evfd = eventfd (0, 0); 1762 evfd = eventfd (0, 0);
1199 1763
1200 if (evfd >= 0) 1764 if (evfd >= 0)
… …
1202 evpipe [0] = -1; 1766 evpipe [0] = -1;
1203 fd_intern (evfd); /* doing it twice doesn't hurt */ 1767 fd_intern (evfd); /* doing it twice doesn't hurt */
1204 ev_io_set (&pipe_w, evfd, EV_READ); 1768 ev_io_set (&pipe_w, evfd, EV_READ);
1205 } 1769 }
1206 else 1770 else
1207#endif 1771# endif
1208 { 1772 {
1209 while (pipe (evpipe)) 1773 while (pipe (evpipe))
1210 ev_syserr ("(libev) error creating signal/async pipe"); 1774 ev_syserr ("(libev) error creating signal/async pipe");
1211 1775
1212 fd_intern (evpipe [0]); 1776 fd_intern (evpipe [0]);
… …
1217 ev_io_start (EV_A_ &pipe_w); 1781 ev_io_start (EV_A_ &pipe_w);
1218 ev_unref (EV_A); /* watcher should not keep loop alive */ 1782 ev_unref (EV_A); /* watcher should not keep loop alive */
1219 } 1783 }
1220} 1784}
1221 1785
1222inline_size void 1786inline_speed void
1223evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1787evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1224{ 1788{
1225 if (!*flag) 1789 if (expect_true (*flag))
1790 return;
1791
1792 *flag = 1;
1793
1794 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1795
1796 pipe_write_skipped = 1;
1797
1798 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1799
1800 if (pipe_write_wanted)
1226 { 1801 {
1802 int old_errno;
1803
1804 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1805
1227 int old_errno = errno; /* save errno because write might clobber it */ 1806 old_errno = errno; /* save errno because write will clobber it */
1228
1229 *flag = 1;
1230 1807
1231#if EV_USE_EVENTFD 1808#if EV_USE_EVENTFD
1232 if (evfd >= 0) 1809 if (evfd >= 0)
1233 { 1810 {
1234 uint64_t counter = 1; 1811 uint64_t counter = 1;
1235 write (evfd, &counter, sizeof (uint64_t)); 1812 write (evfd, &counter, sizeof (uint64_t));
1236 } 1813 }
1237 else 1814 else
1238#endif 1815#endif
1816 {
1817 /* win32 people keep sending patches that change this write() to send() */
1818 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1819 /* so when you think this write should be a send instead, please find out */
1820 /* where your send() is from - it's definitely not the microsoft send, and */
1821 /* tell me. thank you. */
1239 write (evpipe [1], &old_errno, 1); 1822 write (evpipe [1], &(evpipe [1]), 1);
1823 }
1240 1824
1241 errno = old_errno; 1825 errno = old_errno;
1242 } 1826 }
1243} 1827}
1244 1828
… …
1247static void 1831static void
1248pipecb (EV_P_ ev_io *iow, int revents) 1832pipecb (EV_P_ ev_io *iow, int revents)
1249{ 1833{
1250 int i; 1834 int i;
1251 1835
1836 if (revents & EV_READ)
1837 {
1252#if EV_USE_EVENTFD 1838#if EV_USE_EVENTFD
1253 if (evfd >= 0) 1839 if (evfd >= 0)
1254 { 1840 {
1255 uint64_t counter; 1841 uint64_t counter;
1256 read (evfd, &counter, sizeof (uint64_t)); 1842 read (evfd, &counter, sizeof (uint64_t));
1257 } 1843 }
1258 else 1844 else
1259#endif 1845#endif
1260 { 1846 {
1261 char dummy; 1847 char dummy;
1848 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1262 read (evpipe [0], &dummy, 1); 1849 read (evpipe [0], &dummy, 1);
1850 }
1263 } 1851 }
1264 1852
1853 pipe_write_skipped = 0;
1854
1855#if EV_SIGNAL_ENABLE
1265 if (sig_pending) 1856 if (sig_pending)
1266 { 1857 {
1267 sig_pending = 0; 1858 sig_pending = 0;
1268 1859
1269 for (i = EV_NSIG - 1; i--; ) 1860 for (i = EV_NSIG - 1; i--; )
1270 if (expect_false (signals [i].pending)) 1861 if (expect_false (signals [i].pending))
1271 ev_feed_signal_event (EV_A_ i + 1); 1862 ev_feed_signal_event (EV_A_ i + 1);
1272 } 1863 }
1864#endif
1273 1865
1274#if EV_ASYNC_ENABLE 1866#if EV_ASYNC_ENABLE
1275 if (async_pending) 1867 if (async_pending)
1276 { 1868 {
1277 async_pending = 0; 1869 async_pending = 0;
… …
1286#endif 1878#endif
1287} 1879}
1288 1880
1289/*****************************************************************************/ 1881/*****************************************************************************/
1290 1882
1883void
1884ev_feed_signal (int signum)
1885{
1886#if EV_MULTIPLICITY
1887 EV_P = signals [signum - 1].loop;
1888
1889 if (!EV_A)
1890 return;
1891#endif
1892
1893 if (!ev_active (&pipe_w))
1894 return;
1895
1896 signals [signum - 1].pending = 1;
1897 evpipe_write (EV_A_ &sig_pending);
1898}
1899
1291static void 1900static void
1292ev_sighandler (int signum) 1901ev_sighandler (int signum)
1293{ 1902{
1294#if EV_MULTIPLICITY
1295 EV_P = signals [signum - 1].loop;
1296#endif
1297
1298#if _WIN32 1903#ifdef _WIN32
1299 signal (signum, ev_sighandler); 1904 signal (signum, ev_sighandler);
1300#endif 1905#endif
1301 1906
1302 signals [signum - 1].pending = 1; 1907 ev_feed_signal (signum);
1303 evpipe_write (EV_A_ &sig_pending);
1304} 1908}
1305 1909
1306void noinline 1910void noinline
1307ev_feed_signal_event (EV_P_ int signum) 1911ev_feed_signal_event (EV_P_ int signum)
1308{ 1912{
… …
1345 break; 1949 break;
1346 } 1950 }
1347} 1951}
1348#endif 1952#endif
1349 1953
1954#endif
1955
1350/*****************************************************************************/ 1956/*****************************************************************************/
1351 1957
1958#if EV_CHILD_ENABLE
1352static WL childs [EV_PID_HASHSIZE]; 1959static WL childs [EV_PID_HASHSIZE];
1353
1354#ifndef _WIN32
1355 1960
1356static ev_signal childev; 1961static ev_signal childev;
1357 1962
1358#ifndef WIFCONTINUED 1963#ifndef WIFCONTINUED
1359# define WIFCONTINUED(status) 0 1964# define WIFCONTINUED(status) 0
… …
1364child_reap (EV_P_ int chain, int pid, int status) 1969child_reap (EV_P_ int chain, int pid, int status)
1365{ 1970{
1366 ev_child *w; 1971 ev_child *w;
1367 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1972 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1368 1973
1369 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1974 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1370 { 1975 {
1371 if ((w->pid == pid || !w->pid) 1976 if ((w->pid == pid || !w->pid)
1372 && (!traced || (w->flags & 1))) 1977 && (!traced || (w->flags & 1)))
1373 { 1978 {
1374 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1979 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 */ 2004 /* 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 */ 2005 /* 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); 2006 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1402 2007
1403 child_reap (EV_A_ pid, pid, status); 2008 child_reap (EV_A_ pid, pid, status);
1404 if (EV_PID_HASHSIZE > 1) 2009 if ((EV_PID_HASHSIZE) > 1)
1405 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2010 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1406} 2011}
1407 2012
1408#endif 2013#endif
1409 2014
1410/*****************************************************************************/ 2015/*****************************************************************************/
1411 2016
2017#if EV_USE_IOCP
2018# include "ev_iocp.c"
2019#endif
1412#if EV_USE_PORT 2020#if EV_USE_PORT
1413# include "ev_port.c" 2021# include "ev_port.c"
1414#endif 2022#endif
1415#if EV_USE_KQUEUE 2023#if EV_USE_KQUEUE
1416# include "ev_kqueue.c" 2024# include "ev_kqueue.c"
… …
1423#endif 2031#endif
1424#if EV_USE_SELECT 2032#if EV_USE_SELECT
1425# include "ev_select.c" 2033# include "ev_select.c"
1426#endif 2034#endif
1427 2035
1428int 2036int ecb_cold
1429ev_version_major (void) 2037ev_version_major (void)
1430{ 2038{
1431 return EV_VERSION_MAJOR; 2039 return EV_VERSION_MAJOR;
1432} 2040}
1433 2041
1434int 2042int ecb_cold
1435ev_version_minor (void) 2043ev_version_minor (void)
1436{ 2044{
1437 return EV_VERSION_MINOR; 2045 return EV_VERSION_MINOR;
1438} 2046}
1439 2047
1440/* return true if we are running with elevated privileges and should ignore env variables */ 2048/* return true if we are running with elevated privileges and should ignore env variables */
1441int inline_size 2049int inline_size ecb_cold
1442enable_secure (void) 2050enable_secure (void)
1443{ 2051{
1444#ifdef _WIN32 2052#ifdef _WIN32
1445 return 0; 2053 return 0;
1446#else 2054#else
1447 return getuid () != geteuid () 2055 return getuid () != geteuid ()
1448 || getgid () != getegid (); 2056 || getgid () != getegid ();
1449#endif 2057#endif
1450} 2058}
1451 2059
1452unsigned int 2060unsigned int ecb_cold
1453ev_supported_backends (void) 2061ev_supported_backends (void)
1454{ 2062{
1455 unsigned int flags = 0; 2063 unsigned int flags = 0;
1456 2064
1457 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2065 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1461 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2069 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1462 2070
1463 return flags; 2071 return flags;
1464} 2072}
1465 2073
1466unsigned int 2074unsigned int ecb_cold
1467ev_recommended_backends (void) 2075ev_recommended_backends (void)
1468{ 2076{
1469 unsigned int flags = ev_supported_backends (); 2077 unsigned int flags = ev_supported_backends ();
1470 2078
1471#ifndef __NetBSD__ 2079#ifndef __NetBSD__
… …
1476#ifdef __APPLE__ 2084#ifdef __APPLE__
1477 /* only select works correctly on that "unix-certified" platform */ 2085 /* only select works correctly on that "unix-certified" platform */
1478 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2086 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1479 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2087 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1480#endif 2088#endif
2089#ifdef __FreeBSD__
2090 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2091#endif
1481 2092
1482 return flags; 2093 return flags;
1483} 2094}
1484 2095
1485unsigned int 2096unsigned int ecb_cold
1486ev_embeddable_backends (void) 2097ev_embeddable_backends (void)
1487{ 2098{
1488 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2099 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1489 2100
1490 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2101 /* 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 */ 2102 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1492 flags &= ~EVBACKEND_EPOLL; 2103 flags &= ~EVBACKEND_EPOLL;
1493 2104
1494 return flags; 2105 return flags;
1495} 2106}
1496 2107
1497unsigned int 2108unsigned int
1498ev_backend (EV_P) 2109ev_backend (EV_P)
1499{ 2110{
1500 return backend; 2111 return backend;
1501} 2112}
1502 2113
1503#if EV_MINIMAL < 2 2114#if EV_FEATURE_API
1504unsigned int 2115unsigned int
1505ev_loop_count (EV_P) 2116ev_iteration (EV_P)
1506{ 2117{
1507 return loop_count; 2118 return loop_count;
1508} 2119}
1509 2120
1510unsigned int 2121unsigned int
1511ev_loop_depth (EV_P) 2122ev_depth (EV_P)
1512{ 2123{
1513 return loop_depth; 2124 return loop_depth;
1514} 2125}
1515 2126
1516void 2127void
… …
1535ev_userdata (EV_P) 2146ev_userdata (EV_P)
1536{ 2147{
1537 return userdata; 2148 return userdata;
1538} 2149}
1539 2150
2151void
1540void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2152ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1541{ 2153{
1542 invoke_cb = invoke_pending_cb; 2154 invoke_cb = invoke_pending_cb;
1543} 2155}
1544 2156
2157void
1545void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2158ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1546{ 2159{
1547 release_cb = release; 2160 release_cb = release;
1548 acquire_cb = acquire; 2161 acquire_cb = acquire;
1549} 2162}
1550#endif 2163#endif
1551 2164
1552/* initialise a loop structure, must be zero-initialised */ 2165/* initialise a loop structure, must be zero-initialised */
1553static void noinline 2166static void noinline ecb_cold
1554loop_init (EV_P_ unsigned int flags) 2167loop_init (EV_P_ unsigned int flags)
1555{ 2168{
1556 if (!backend) 2169 if (!backend)
1557 { 2170 {
2171 origflags = flags;
2172
1558#if EV_USE_REALTIME 2173#if EV_USE_REALTIME
1559 if (!have_realtime) 2174 if (!have_realtime)
1560 { 2175 {
1561 struct timespec ts; 2176 struct timespec ts;
1562 2177
… …
1584 if (!(flags & EVFLAG_NOENV) 2199 if (!(flags & EVFLAG_NOENV)
1585 && !enable_secure () 2200 && !enable_secure ()
1586 && getenv ("LIBEV_FLAGS")) 2201 && getenv ("LIBEV_FLAGS"))
1587 flags = atoi (getenv ("LIBEV_FLAGS")); 2202 flags = atoi (getenv ("LIBEV_FLAGS"));
1588 2203
1589 ev_rt_now = ev_time (); 2204 ev_rt_now = ev_time ();
1590 mn_now = get_clock (); 2205 mn_now = get_clock ();
1591 now_floor = mn_now; 2206 now_floor = mn_now;
1592 rtmn_diff = ev_rt_now - mn_now; 2207 rtmn_diff = ev_rt_now - mn_now;
1593#if EV_MINIMAL < 2 2208#if EV_FEATURE_API
1594 invoke_cb = ev_invoke_pending; 2209 invoke_cb = ev_invoke_pending;
1595#endif 2210#endif
1596 2211
1597 io_blocktime = 0.; 2212 io_blocktime = 0.;
1598 timeout_blocktime = 0.; 2213 timeout_blocktime = 0.;
1599 backend = 0; 2214 backend = 0;
1600 backend_fd = -1; 2215 backend_fd = -1;
1601 sig_pending = 0; 2216 sig_pending = 0;
1602#if EV_ASYNC_ENABLE 2217#if EV_ASYNC_ENABLE
1603 async_pending = 0; 2218 async_pending = 0;
1604#endif 2219#endif
2220 pipe_write_skipped = 0;
2221 pipe_write_wanted = 0;
1605#if EV_USE_INOTIFY 2222#if EV_USE_INOTIFY
1606 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2223 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1607#endif 2224#endif
1608#if EV_USE_SIGNALFD 2225#if EV_USE_SIGNALFD
1609 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2226 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1610#endif 2227#endif
1611 2228
1612 if (!(flags & 0x0000ffffU)) 2229 if (!(flags & EVBACKEND_MASK))
1613 flags |= ev_recommended_backends (); 2230 flags |= ev_recommended_backends ();
1614 2231
2232#if EV_USE_IOCP
2233 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2234#endif
1615#if EV_USE_PORT 2235#if EV_USE_PORT
1616 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2236 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1617#endif 2237#endif
1618#if EV_USE_KQUEUE 2238#if EV_USE_KQUEUE
1619 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2239 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1628 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2248 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1629#endif 2249#endif
1630 2250
1631 ev_prepare_init (&pending_w, pendingcb); 2251 ev_prepare_init (&pending_w, pendingcb);
1632 2252
2253#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1633 ev_init (&pipe_w, pipecb); 2254 ev_init (&pipe_w, pipecb);
1634 ev_set_priority (&pipe_w, EV_MAXPRI); 2255 ev_set_priority (&pipe_w, EV_MAXPRI);
2256#endif
1635 } 2257 }
1636} 2258}
1637 2259
1638/* free up a loop structure */ 2260/* free up a loop structure */
1639static void noinline 2261void ecb_cold
1640loop_destroy (EV_P) 2262ev_loop_destroy (EV_P)
1641{ 2263{
1642 int i; 2264 int i;
2265
2266#if EV_MULTIPLICITY
2267 /* mimic free (0) */
2268 if (!EV_A)
2269 return;
2270#endif
2271
2272#if EV_CLEANUP_ENABLE
2273 /* queue cleanup watchers (and execute them) */
2274 if (expect_false (cleanupcnt))
2275 {
2276 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2277 EV_INVOKE_PENDING;
2278 }
2279#endif
2280
2281#if EV_CHILD_ENABLE
2282 if (ev_is_active (&childev))
2283 {
2284 ev_ref (EV_A); /* child watcher */
2285 ev_signal_stop (EV_A_ &childev);
2286 }
2287#endif
1643 2288
1644 if (ev_is_active (&pipe_w)) 2289 if (ev_is_active (&pipe_w))
1645 { 2290 {
1646 /*ev_ref (EV_A);*/ 2291 /*ev_ref (EV_A);*/
1647 /*ev_io_stop (EV_A_ &pipe_w);*/ 2292 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1658 } 2303 }
1659 } 2304 }
1660 2305
1661#if EV_USE_SIGNALFD 2306#if EV_USE_SIGNALFD
1662 if (ev_is_active (&sigfd_w)) 2307 if (ev_is_active (&sigfd_w))
1663 {
1664 /*ev_ref (EV_A);*/
1665 /*ev_io_stop (EV_A_ &sigfd_w);*/
1666
1667 close (sigfd); 2308 close (sigfd);
1668 }
1669#endif 2309#endif
1670 2310
1671#if EV_USE_INOTIFY 2311#if EV_USE_INOTIFY
1672 if (fs_fd >= 0) 2312 if (fs_fd >= 0)
1673 close (fs_fd); 2313 close (fs_fd);
1674#endif 2314#endif
1675 2315
1676 if (backend_fd >= 0) 2316 if (backend_fd >= 0)
1677 close (backend_fd); 2317 close (backend_fd);
1678 2318
2319#if EV_USE_IOCP
2320 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2321#endif
1679#if EV_USE_PORT 2322#if EV_USE_PORT
1680 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2323 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1681#endif 2324#endif
1682#if EV_USE_KQUEUE 2325#if EV_USE_KQUEUE
1683 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2326 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1710 array_free (periodic, EMPTY); 2353 array_free (periodic, EMPTY);
1711#endif 2354#endif
1712#if EV_FORK_ENABLE 2355#if EV_FORK_ENABLE
1713 array_free (fork, EMPTY); 2356 array_free (fork, EMPTY);
1714#endif 2357#endif
2358#if EV_CLEANUP_ENABLE
2359 array_free (cleanup, EMPTY);
2360#endif
1715 array_free (prepare, EMPTY); 2361 array_free (prepare, EMPTY);
1716 array_free (check, EMPTY); 2362 array_free (check, EMPTY);
1717#if EV_ASYNC_ENABLE 2363#if EV_ASYNC_ENABLE
1718 array_free (async, EMPTY); 2364 array_free (async, EMPTY);
1719#endif 2365#endif
1720 2366
1721 backend = 0; 2367 backend = 0;
2368
2369#if EV_MULTIPLICITY
2370 if (ev_is_default_loop (EV_A))
2371#endif
2372 ev_default_loop_ptr = 0;
2373#if EV_MULTIPLICITY
2374 else
2375 ev_free (EV_A);
2376#endif
1722} 2377}
1723 2378
1724#if EV_USE_INOTIFY 2379#if EV_USE_INOTIFY
1725inline_size void infy_fork (EV_P); 2380inline_size void infy_fork (EV_P);
1726#endif 2381#endif
… …
1741 infy_fork (EV_A); 2396 infy_fork (EV_A);
1742#endif 2397#endif
1743 2398
1744 if (ev_is_active (&pipe_w)) 2399 if (ev_is_active (&pipe_w))
1745 { 2400 {
1746 /* this "locks" the handlers against writing to the pipe */ 2401 /* 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 2402
1753 ev_ref (EV_A); 2403 ev_ref (EV_A);
1754 ev_io_stop (EV_A_ &pipe_w); 2404 ev_io_stop (EV_A_ &pipe_w);
1755 2405
1756#if EV_USE_EVENTFD 2406#if EV_USE_EVENTFD
… …
1762 { 2412 {
1763 EV_WIN32_CLOSE_FD (evpipe [0]); 2413 EV_WIN32_CLOSE_FD (evpipe [0]);
1764 EV_WIN32_CLOSE_FD (evpipe [1]); 2414 EV_WIN32_CLOSE_FD (evpipe [1]);
1765 } 2415 }
1766 2416
2417#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1767 evpipe_init (EV_A); 2418 evpipe_init (EV_A);
1768 /* now iterate over everything, in case we missed something */ 2419 /* now iterate over everything, in case we missed something */
1769 pipecb (EV_A_ &pipe_w, EV_READ); 2420 pipecb (EV_A_ &pipe_w, EV_READ);
2421#endif
1770 } 2422 }
1771 2423
1772 postfork = 0; 2424 postfork = 0;
1773} 2425}
1774 2426
1775#if EV_MULTIPLICITY 2427#if EV_MULTIPLICITY
1776 2428
1777struct ev_loop * 2429struct ev_loop * ecb_cold
1778ev_loop_new (unsigned int flags) 2430ev_loop_new (unsigned int flags)
1779{ 2431{
1780 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2432 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1781 2433
1782 memset (EV_A, 0, sizeof (struct ev_loop)); 2434 memset (EV_A, 0, sizeof (struct ev_loop));
1783 loop_init (EV_A_ flags); 2435 loop_init (EV_A_ flags);
1784 2436
1785 if (ev_backend (EV_A)) 2437 if (ev_backend (EV_A))
1786 return EV_A; 2438 return EV_A;
1787 2439
2440 ev_free (EV_A);
1788 return 0; 2441 return 0;
1789} 2442}
1790 2443
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 */ 2444#endif /* multiplicity */
1804 2445
1805#if EV_VERIFY 2446#if EV_VERIFY
1806static void noinline 2447static void noinline ecb_cold
1807verify_watcher (EV_P_ W w) 2448verify_watcher (EV_P_ W w)
1808{ 2449{
1809 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2450 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1810 2451
1811 if (w->pending) 2452 if (w->pending)
1812 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2453 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1813} 2454}
1814 2455
1815static void noinline 2456static void noinline ecb_cold
1816verify_heap (EV_P_ ANHE *heap, int N) 2457verify_heap (EV_P_ ANHE *heap, int N)
1817{ 2458{
1818 int i; 2459 int i;
1819 2460
1820 for (i = HEAP0; i < N + HEAP0; ++i) 2461 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1825 2466
1826 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2467 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1827 } 2468 }
1828} 2469}
1829 2470
1830static void noinline 2471static void noinline ecb_cold
1831array_verify (EV_P_ W *ws, int cnt) 2472array_verify (EV_P_ W *ws, int cnt)
1832{ 2473{
1833 while (cnt--) 2474 while (cnt--)
1834 { 2475 {
1835 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2476 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1836 verify_watcher (EV_A_ ws [cnt]); 2477 verify_watcher (EV_A_ ws [cnt]);
1837 } 2478 }
1838} 2479}
1839#endif 2480#endif
1840 2481
1841#if EV_MINIMAL < 2 2482#if EV_FEATURE_API
1842void 2483void ecb_cold
1843ev_loop_verify (EV_P) 2484ev_verify (EV_P)
1844{ 2485{
1845#if EV_VERIFY 2486#if EV_VERIFY
1846 int i; 2487 int i;
1847 WL w; 2488 WL w;
1848 2489
… …
1882#if EV_FORK_ENABLE 2523#if EV_FORK_ENABLE
1883 assert (forkmax >= forkcnt); 2524 assert (forkmax >= forkcnt);
1884 array_verify (EV_A_ (W *)forks, forkcnt); 2525 array_verify (EV_A_ (W *)forks, forkcnt);
1885#endif 2526#endif
1886 2527
2528#if EV_CLEANUP_ENABLE
2529 assert (cleanupmax >= cleanupcnt);
2530 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2531#endif
2532
1887#if EV_ASYNC_ENABLE 2533#if EV_ASYNC_ENABLE
1888 assert (asyncmax >= asynccnt); 2534 assert (asyncmax >= asynccnt);
1889 array_verify (EV_A_ (W *)asyncs, asynccnt); 2535 array_verify (EV_A_ (W *)asyncs, asynccnt);
1890#endif 2536#endif
1891 2537
2538#if EV_PREPARE_ENABLE
1892 assert (preparemax >= preparecnt); 2539 assert (preparemax >= preparecnt);
1893 array_verify (EV_A_ (W *)prepares, preparecnt); 2540 array_verify (EV_A_ (W *)prepares, preparecnt);
2541#endif
1894 2542
2543#if EV_CHECK_ENABLE
1895 assert (checkmax >= checkcnt); 2544 assert (checkmax >= checkcnt);
1896 array_verify (EV_A_ (W *)checks, checkcnt); 2545 array_verify (EV_A_ (W *)checks, checkcnt);
2546#endif
1897 2547
1898# if 0 2548# if 0
2549#if EV_CHILD_ENABLE
1899 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2550 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) 2551 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2552#endif
1901# endif 2553# endif
1902#endif 2554#endif
1903} 2555}
1904#endif 2556#endif
1905 2557
1906#if EV_MULTIPLICITY 2558#if EV_MULTIPLICITY
1907struct ev_loop * 2559struct ev_loop * ecb_cold
1908ev_default_loop_init (unsigned int flags)
1909#else 2560#else
1910int 2561int
2562#endif
1911ev_default_loop (unsigned int flags) 2563ev_default_loop (unsigned int flags)
1912#endif
1913{ 2564{
1914 if (!ev_default_loop_ptr) 2565 if (!ev_default_loop_ptr)
1915 { 2566 {
1916#if EV_MULTIPLICITY 2567#if EV_MULTIPLICITY
1917 EV_P = ev_default_loop_ptr = &default_loop_struct; 2568 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1921 2572
1922 loop_init (EV_A_ flags); 2573 loop_init (EV_A_ flags);
1923 2574
1924 if (ev_backend (EV_A)) 2575 if (ev_backend (EV_A))
1925 { 2576 {
1926#ifndef _WIN32 2577#if EV_CHILD_ENABLE
1927 ev_signal_init (&childev, childcb, SIGCHLD); 2578 ev_signal_init (&childev, childcb, SIGCHLD);
1928 ev_set_priority (&childev, EV_MAXPRI); 2579 ev_set_priority (&childev, EV_MAXPRI);
1929 ev_signal_start (EV_A_ &childev); 2580 ev_signal_start (EV_A_ &childev);
1930 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2581 ev_unref (EV_A); /* child watcher should not keep loop alive */
1931#endif 2582#endif
… …
1936 2587
1937 return ev_default_loop_ptr; 2588 return ev_default_loop_ptr;
1938} 2589}
1939 2590
1940void 2591void
1941ev_default_destroy (void) 2592ev_loop_fork (EV_P)
1942{ 2593{
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 */ 2594 postfork = 1; /* must be in line with ev_default_fork */
1965} 2595}
1966 2596
1967/*****************************************************************************/ 2597/*****************************************************************************/
1968 2598
1969void 2599void
… …
1991 2621
1992 for (pri = NUMPRI; pri--; ) 2622 for (pri = NUMPRI; pri--; )
1993 while (pendingcnt [pri]) 2623 while (pendingcnt [pri])
1994 { 2624 {
1995 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2625 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 2626
2000 p->w->pending = 0; 2627 p->w->pending = 0;
2001 EV_CB_INVOKE (p->w, p->events); 2628 EV_CB_INVOKE (p->w, p->events);
2002 EV_FREQUENT_CHECK; 2629 EV_FREQUENT_CHECK;
2003 } 2630 }
… …
2060 EV_FREQUENT_CHECK; 2687 EV_FREQUENT_CHECK;
2061 feed_reverse (EV_A_ (W)w); 2688 feed_reverse (EV_A_ (W)w);
2062 } 2689 }
2063 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2690 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2064 2691
2065 feed_reverse_done (EV_A_ EV_TIMEOUT); 2692 feed_reverse_done (EV_A_ EV_TIMER);
2066 } 2693 }
2067} 2694}
2068 2695
2069#if EV_PERIODIC_ENABLE 2696#if EV_PERIODIC_ENABLE
2697
2698static void noinline
2699periodic_recalc (EV_P_ ev_periodic *w)
2700{
2701 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2702 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2703
2704 /* the above almost always errs on the low side */
2705 while (at <= ev_rt_now)
2706 {
2707 ev_tstamp nat = at + w->interval;
2708
2709 /* when resolution fails us, we use ev_rt_now */
2710 if (expect_false (nat == at))
2711 {
2712 at = ev_rt_now;
2713 break;
2714 }
2715
2716 at = nat;
2717 }
2718
2719 ev_at (w) = at;
2720}
2721
2070/* make periodics pending */ 2722/* make periodics pending */
2071inline_size void 2723inline_size void
2072periodics_reify (EV_P) 2724periodics_reify (EV_P)
2073{ 2725{
2074 EV_FREQUENT_CHECK; 2726 EV_FREQUENT_CHECK;
… …
2093 ANHE_at_cache (periodics [HEAP0]); 2745 ANHE_at_cache (periodics [HEAP0]);
2094 downheap (periodics, periodiccnt, HEAP0); 2746 downheap (periodics, periodiccnt, HEAP0);
2095 } 2747 }
2096 else if (w->interval) 2748 else if (w->interval)
2097 { 2749 {
2098 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2750 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]); 2751 ANHE_at_cache (periodics [HEAP0]);
2113 downheap (periodics, periodiccnt, HEAP0); 2752 downheap (periodics, periodiccnt, HEAP0);
2114 } 2753 }
2115 else 2754 else
2116 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2755 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2123 feed_reverse_done (EV_A_ EV_PERIODIC); 2762 feed_reverse_done (EV_A_ EV_PERIODIC);
2124 } 2763 }
2125} 2764}
2126 2765
2127/* simply recalculate all periodics */ 2766/* simply recalculate all periodics */
2128/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2767/* TODO: maybe ensure that at least one event happens when jumping forward? */
2129static void noinline 2768static void noinline ecb_cold
2130periodics_reschedule (EV_P) 2769periodics_reschedule (EV_P)
2131{ 2770{
2132 int i; 2771 int i;
2133 2772
2134 /* adjust periodics after time jump */ 2773 /* adjust periodics after time jump */
… …
2137 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2776 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2138 2777
2139 if (w->reschedule_cb) 2778 if (w->reschedule_cb)
2140 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2779 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2141 else if (w->interval) 2780 else if (w->interval)
2142 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2781 periodic_recalc (EV_A_ w);
2143 2782
2144 ANHE_at_cache (periodics [i]); 2783 ANHE_at_cache (periodics [i]);
2145 } 2784 }
2146 2785
2147 reheap (periodics, periodiccnt); 2786 reheap (periodics, periodiccnt);
2148} 2787}
2149#endif 2788#endif
2150 2789
2151/* adjust all timers by a given offset */ 2790/* adjust all timers by a given offset */
2152static void noinline 2791static void noinline ecb_cold
2153timers_reschedule (EV_P_ ev_tstamp adjust) 2792timers_reschedule (EV_P_ ev_tstamp adjust)
2154{ 2793{
2155 int i; 2794 int i;
2156 2795
2157 for (i = 0; i < timercnt; ++i) 2796 for (i = 0; i < timercnt; ++i)
… …
2161 ANHE_at_cache (*he); 2800 ANHE_at_cache (*he);
2162 } 2801 }
2163} 2802}
2164 2803
2165/* fetch new monotonic and realtime times from the kernel */ 2804/* fetch new monotonic and realtime times from the kernel */
2166/* also detetc if there was a timejump, and act accordingly */ 2805/* also detect if there was a timejump, and act accordingly */
2167inline_speed void 2806inline_speed void
2168time_update (EV_P_ ev_tstamp max_block) 2807time_update (EV_P_ ev_tstamp max_block)
2169{ 2808{
2170#if EV_USE_MONOTONIC 2809#if EV_USE_MONOTONIC
2171 if (expect_true (have_monotonic)) 2810 if (expect_true (have_monotonic))
… …
2194 * doesn't hurt either as we only do this on time-jumps or 2833 * doesn't hurt either as we only do this on time-jumps or
2195 * in the unlikely event of having been preempted here. 2834 * in the unlikely event of having been preempted here.
2196 */ 2835 */
2197 for (i = 4; --i; ) 2836 for (i = 4; --i; )
2198 { 2837 {
2838 ev_tstamp diff;
2199 rtmn_diff = ev_rt_now - mn_now; 2839 rtmn_diff = ev_rt_now - mn_now;
2200 2840
2841 diff = odiff - rtmn_diff;
2842
2201 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2843 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2202 return; /* all is well */ 2844 return; /* all is well */
2203 2845
2204 ev_rt_now = ev_time (); 2846 ev_rt_now = ev_time ();
2205 mn_now = get_clock (); 2847 mn_now = get_clock ();
2206 now_floor = mn_now; 2848 now_floor = mn_now;
… …
2229 mn_now = ev_rt_now; 2871 mn_now = ev_rt_now;
2230 } 2872 }
2231} 2873}
2232 2874
2233void 2875void
2234ev_loop (EV_P_ int flags) 2876ev_run (EV_P_ int flags)
2235{ 2877{
2236#if EV_MINIMAL < 2 2878#if EV_FEATURE_API
2237 ++loop_depth; 2879 ++loop_depth;
2238#endif 2880#endif
2239 2881
2240 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2882 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2241 2883
2242 loop_done = EVUNLOOP_CANCEL; 2884 loop_done = EVBREAK_CANCEL;
2243 2885
2244 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2886 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2245 2887
2246 do 2888 do
2247 { 2889 {
2248#if EV_VERIFY >= 2 2890#if EV_VERIFY >= 2
2249 ev_loop_verify (EV_A); 2891 ev_verify (EV_A);
2250#endif 2892#endif
2251 2893
2252#ifndef _WIN32 2894#ifndef _WIN32
2253 if (expect_false (curpid)) /* penalise the forking check even more */ 2895 if (expect_false (curpid)) /* penalise the forking check even more */
2254 if (expect_false (getpid () != curpid)) 2896 if (expect_false (getpid () != curpid))
… …
2266 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2908 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2267 EV_INVOKE_PENDING; 2909 EV_INVOKE_PENDING;
2268 } 2910 }
2269#endif 2911#endif
2270 2912
2913#if EV_PREPARE_ENABLE
2271 /* queue prepare watchers (and execute them) */ 2914 /* queue prepare watchers (and execute them) */
2272 if (expect_false (preparecnt)) 2915 if (expect_false (preparecnt))
2273 { 2916 {
2274 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2917 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2275 EV_INVOKE_PENDING; 2918 EV_INVOKE_PENDING;
2276 } 2919 }
2920#endif
2277 2921
2278 if (expect_false (loop_done)) 2922 if (expect_false (loop_done))
2279 break; 2923 break;
2280 2924
2281 /* we might have forked, so reify kernel state if necessary */ 2925 /* we might have forked, so reify kernel state if necessary */
… …
2288 /* calculate blocking time */ 2932 /* calculate blocking time */
2289 { 2933 {
2290 ev_tstamp waittime = 0.; 2934 ev_tstamp waittime = 0.;
2291 ev_tstamp sleeptime = 0.; 2935 ev_tstamp sleeptime = 0.;
2292 2936
2937 /* remember old timestamp for io_blocktime calculation */
2938 ev_tstamp prev_mn_now = mn_now;
2939
2940 /* update time to cancel out callback processing overhead */
2941 time_update (EV_A_ 1e100);
2942
2943 /* from now on, we want a pipe-wake-up */
2944 pipe_write_wanted = 1;
2945
2946 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2947
2293 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2948 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2294 { 2949 {
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; 2950 waittime = MAX_BLOCKTIME;
2302 2951
2303 if (timercnt) 2952 if (timercnt)
2304 { 2953 {
2305 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2954 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2306 if (waittime > to) waittime = to; 2955 if (waittime > to) waittime = to;
2307 } 2956 }
2308 2957
2309#if EV_PERIODIC_ENABLE 2958#if EV_PERIODIC_ENABLE
2310 if (periodiccnt) 2959 if (periodiccnt)
2311 { 2960 {
2312 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2961 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2313 if (waittime > to) waittime = to; 2962 if (waittime > to) waittime = to;
2314 } 2963 }
2315#endif 2964#endif
2316 2965
2317 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2966 /* don't let timeouts decrease the waittime below timeout_blocktime */
2318 if (expect_false (waittime < timeout_blocktime)) 2967 if (expect_false (waittime < timeout_blocktime))
2319 waittime = timeout_blocktime; 2968 waittime = timeout_blocktime;
2969
2970 /* at this point, we NEED to wait, so we have to ensure */
2971 /* to pass a minimum nonzero value to the backend */
2972 if (expect_false (waittime < backend_mintime))
2973 waittime = backend_mintime;
2320 2974
2321 /* extra check because io_blocktime is commonly 0 */ 2975 /* extra check because io_blocktime is commonly 0 */
2322 if (expect_false (io_blocktime)) 2976 if (expect_false (io_blocktime))
2323 { 2977 {
2324 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2978 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2325 2979
2326 if (sleeptime > waittime - backend_fudge) 2980 if (sleeptime > waittime - backend_mintime)
2327 sleeptime = waittime - backend_fudge; 2981 sleeptime = waittime - backend_mintime;
2328 2982
2329 if (expect_true (sleeptime > 0.)) 2983 if (expect_true (sleeptime > 0.))
2330 { 2984 {
2331 ev_sleep (sleeptime); 2985 ev_sleep (sleeptime);
2332 waittime -= sleeptime; 2986 waittime -= sleeptime;
2333 } 2987 }
2334 } 2988 }
2335 } 2989 }
2336 2990
2337#if EV_MINIMAL < 2 2991#if EV_FEATURE_API
2338 ++loop_count; 2992 ++loop_count;
2339#endif 2993#endif
2340 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 2994 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2341 backend_poll (EV_A_ waittime); 2995 backend_poll (EV_A_ waittime);
2342 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 2996 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2997
2998 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2999
3000 if (pipe_write_skipped)
3001 {
3002 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3003 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3004 }
3005
2343 3006
2344 /* update ev_rt_now, do magic */ 3007 /* update ev_rt_now, do magic */
2345 time_update (EV_A_ waittime + sleeptime); 3008 time_update (EV_A_ waittime + sleeptime);
2346 } 3009 }
2347 3010
… …
2354#if EV_IDLE_ENABLE 3017#if EV_IDLE_ENABLE
2355 /* queue idle watchers unless other events are pending */ 3018 /* queue idle watchers unless other events are pending */
2356 idle_reify (EV_A); 3019 idle_reify (EV_A);
2357#endif 3020#endif
2358 3021
3022#if EV_CHECK_ENABLE
2359 /* queue check watchers, to be executed first */ 3023 /* queue check watchers, to be executed first */
2360 if (expect_false (checkcnt)) 3024 if (expect_false (checkcnt))
2361 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3025 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3026#endif
2362 3027
2363 EV_INVOKE_PENDING; 3028 EV_INVOKE_PENDING;
2364 } 3029 }
2365 while (expect_true ( 3030 while (expect_true (
2366 activecnt 3031 activecnt
2367 && !loop_done 3032 && !loop_done
2368 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3033 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2369 )); 3034 ));
2370 3035
2371 if (loop_done == EVUNLOOP_ONE) 3036 if (loop_done == EVBREAK_ONE)
2372 loop_done = EVUNLOOP_CANCEL; 3037 loop_done = EVBREAK_CANCEL;
2373 3038
2374#if EV_MINIMAL < 2 3039#if EV_FEATURE_API
2375 --loop_depth; 3040 --loop_depth;
2376#endif 3041#endif
2377} 3042}
2378 3043
2379void 3044void
2380ev_unloop (EV_P_ int how) 3045ev_break (EV_P_ int how)
2381{ 3046{
2382 loop_done = how; 3047 loop_done = how;
2383} 3048}
2384 3049
2385void 3050void
… …
2505 3170
2506 if (expect_false (ev_is_active (w))) 3171 if (expect_false (ev_is_active (w)))
2507 return; 3172 return;
2508 3173
2509 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3174 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)))); 3175 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2511 3176
2512 EV_FREQUENT_CHECK; 3177 EV_FREQUENT_CHECK;
2513 3178
2514 ev_start (EV_A_ (W)w, 1); 3179 ev_start (EV_A_ (W)w, 1);
2515 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3180 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2533 EV_FREQUENT_CHECK; 3198 EV_FREQUENT_CHECK;
2534 3199
2535 wlist_del (&anfds[w->fd].head, (WL)w); 3200 wlist_del (&anfds[w->fd].head, (WL)w);
2536 ev_stop (EV_A_ (W)w); 3201 ev_stop (EV_A_ (W)w);
2537 3202
2538 fd_change (EV_A_ w->fd, 1); 3203 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2539 3204
2540 EV_FREQUENT_CHECK; 3205 EV_FREQUENT_CHECK;
2541} 3206}
2542 3207
2543void noinline 3208void noinline
… …
2585 timers [active] = timers [timercnt + HEAP0]; 3250 timers [active] = timers [timercnt + HEAP0];
2586 adjustheap (timers, timercnt, active); 3251 adjustheap (timers, timercnt, active);
2587 } 3252 }
2588 } 3253 }
2589 3254
2590 EV_FREQUENT_CHECK;
2591
2592 ev_at (w) -= mn_now; 3255 ev_at (w) -= mn_now;
2593 3256
2594 ev_stop (EV_A_ (W)w); 3257 ev_stop (EV_A_ (W)w);
3258
3259 EV_FREQUENT_CHECK;
2595} 3260}
2596 3261
2597void noinline 3262void noinline
2598ev_timer_again (EV_P_ ev_timer *w) 3263ev_timer_again (EV_P_ ev_timer *w)
2599{ 3264{
… …
2635 if (w->reschedule_cb) 3300 if (w->reschedule_cb)
2636 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3301 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2637 else if (w->interval) 3302 else if (w->interval)
2638 { 3303 {
2639 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3304 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 */ 3305 periodic_recalc (EV_A_ w);
2641 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2642 } 3306 }
2643 else 3307 else
2644 ev_at (w) = w->offset; 3308 ev_at (w) = w->offset;
2645 3309
2646 EV_FREQUENT_CHECK; 3310 EV_FREQUENT_CHECK;
… …
2678 periodics [active] = periodics [periodiccnt + HEAP0]; 3342 periodics [active] = periodics [periodiccnt + HEAP0];
2679 adjustheap (periodics, periodiccnt, active); 3343 adjustheap (periodics, periodiccnt, active);
2680 } 3344 }
2681 } 3345 }
2682 3346
2683 EV_FREQUENT_CHECK;
2684
2685 ev_stop (EV_A_ (W)w); 3347 ev_stop (EV_A_ (W)w);
3348
3349 EV_FREQUENT_CHECK;
2686} 3350}
2687 3351
2688void noinline 3352void noinline
2689ev_periodic_again (EV_P_ ev_periodic *w) 3353ev_periodic_again (EV_P_ ev_periodic *w)
2690{ 3354{
… …
2695#endif 3359#endif
2696 3360
2697#ifndef SA_RESTART 3361#ifndef SA_RESTART
2698# define SA_RESTART 0 3362# define SA_RESTART 0
2699#endif 3363#endif
3364
3365#if EV_SIGNAL_ENABLE
2700 3366
2701void noinline 3367void noinline
2702ev_signal_start (EV_P_ ev_signal *w) 3368ev_signal_start (EV_P_ ev_signal *w)
2703{ 3369{
2704 if (expect_false (ev_is_active (w))) 3370 if (expect_false (ev_is_active (w)))
… …
2751 if (!((WL)w)->next) 3417 if (!((WL)w)->next)
2752# if EV_USE_SIGNALFD 3418# if EV_USE_SIGNALFD
2753 if (sigfd < 0) /*TODO*/ 3419 if (sigfd < 0) /*TODO*/
2754# endif 3420# endif
2755 { 3421 {
2756# if _WIN32 3422# ifdef _WIN32
3423 evpipe_init (EV_A);
3424
2757 signal (w->signum, ev_sighandler); 3425 signal (w->signum, ev_sighandler);
2758# else 3426# else
2759 struct sigaction sa; 3427 struct sigaction sa;
2760 3428
2761 evpipe_init (EV_A); 3429 evpipe_init (EV_A);
… …
2763 sa.sa_handler = ev_sighandler; 3431 sa.sa_handler = ev_sighandler;
2764 sigfillset (&sa.sa_mask); 3432 sigfillset (&sa.sa_mask);
2765 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3433 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2766 sigaction (w->signum, &sa, 0); 3434 sigaction (w->signum, &sa, 0);
2767 3435
3436 if (origflags & EVFLAG_NOSIGMASK)
3437 {
2768 sigemptyset (&sa.sa_mask); 3438 sigemptyset (&sa.sa_mask);
2769 sigaddset (&sa.sa_mask, w->signum); 3439 sigaddset (&sa.sa_mask, w->signum);
2770 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3440 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3441 }
2771#endif 3442#endif
2772 } 3443 }
2773 3444
2774 EV_FREQUENT_CHECK; 3445 EV_FREQUENT_CHECK;
2775} 3446}
… …
2792 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3463 signals [w->signum - 1].loop = 0; /* unattach from signal */
2793#endif 3464#endif
2794#if EV_USE_SIGNALFD 3465#if EV_USE_SIGNALFD
2795 if (sigfd >= 0) 3466 if (sigfd >= 0)
2796 { 3467 {
2797 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3468 sigset_t ss;
3469
3470 sigemptyset (&ss);
3471 sigaddset (&ss, w->signum);
2798 sigdelset (&sigfd_set, w->signum); 3472 sigdelset (&sigfd_set, w->signum);
3473
2799 signalfd (sigfd, &sigfd_set, 0); 3474 signalfd (sigfd, &sigfd_set, 0);
2800 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3475 sigprocmask (SIG_UNBLOCK, &ss, 0);
2801 /*TODO: maybe unblock signal? */
2802 } 3476 }
2803 else 3477 else
2804#endif 3478#endif
2805 signal (w->signum, SIG_DFL); 3479 signal (w->signum, SIG_DFL);
2806 } 3480 }
2807 3481
2808 EV_FREQUENT_CHECK; 3482 EV_FREQUENT_CHECK;
2809} 3483}
2810 3484
3485#endif
3486
3487#if EV_CHILD_ENABLE
3488
2811void 3489void
2812ev_child_start (EV_P_ ev_child *w) 3490ev_child_start (EV_P_ ev_child *w)
2813{ 3491{
2814#if EV_MULTIPLICITY 3492#if EV_MULTIPLICITY
2815 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3493 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
… …
2818 return; 3496 return;
2819 3497
2820 EV_FREQUENT_CHECK; 3498 EV_FREQUENT_CHECK;
2821 3499
2822 ev_start (EV_A_ (W)w, 1); 3500 ev_start (EV_A_ (W)w, 1);
2823 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3501 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2824 3502
2825 EV_FREQUENT_CHECK; 3503 EV_FREQUENT_CHECK;
2826} 3504}
2827 3505
2828void 3506void
… …
2832 if (expect_false (!ev_is_active (w))) 3510 if (expect_false (!ev_is_active (w)))
2833 return; 3511 return;
2834 3512
2835 EV_FREQUENT_CHECK; 3513 EV_FREQUENT_CHECK;
2836 3514
2837 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3515 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2838 ev_stop (EV_A_ (W)w); 3516 ev_stop (EV_A_ (W)w);
2839 3517
2840 EV_FREQUENT_CHECK; 3518 EV_FREQUENT_CHECK;
2841} 3519}
3520
3521#endif
2842 3522
2843#if EV_STAT_ENABLE 3523#if EV_STAT_ENABLE
2844 3524
2845# ifdef _WIN32 3525# ifdef _WIN32
2846# undef lstat 3526# undef lstat
… …
2852#define MIN_STAT_INTERVAL 0.1074891 3532#define MIN_STAT_INTERVAL 0.1074891
2853 3533
2854static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3534static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2855 3535
2856#if EV_USE_INOTIFY 3536#if EV_USE_INOTIFY
2857# define EV_INOTIFY_BUFSIZE 8192 3537
3538/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3539# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2858 3540
2859static void noinline 3541static void noinline
2860infy_add (EV_P_ ev_stat *w) 3542infy_add (EV_P_ ev_stat *w)
2861{ 3543{
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); 3544 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 3545
2864 if (w->wd < 0) 3546 if (w->wd >= 0)
3547 {
3548 struct statfs sfs;
3549
3550 /* now local changes will be tracked by inotify, but remote changes won't */
3551 /* unless the filesystem is known to be local, we therefore still poll */
3552 /* also do poll on <2.6.25, but with normal frequency */
3553
3554 if (!fs_2625)
3555 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3556 else if (!statfs (w->path, &sfs)
3557 && (sfs.f_type == 0x1373 /* devfs */
3558 || sfs.f_type == 0xEF53 /* ext2/3 */
3559 || sfs.f_type == 0x3153464a /* jfs */
3560 || sfs.f_type == 0x52654973 /* reiser3 */
3561 || sfs.f_type == 0x01021994 /* tempfs */
3562 || sfs.f_type == 0x58465342 /* xfs */))
3563 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3564 else
3565 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2865 { 3566 }
3567 else
3568 {
3569 /* can't use inotify, continue to stat */
2866 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3570 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 3571
2869 /* monitor some parent directory for speedup hints */ 3572 /* 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, */ 3573 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2871 /* but an efficiency issue only */ 3574 /* but an efficiency issue only */
2872 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3575 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2873 { 3576 {
2874 char path [4096]; 3577 char path [4096];
… …
2884 if (!pend || pend == path) 3587 if (!pend || pend == path)
2885 break; 3588 break;
2886 3589
2887 *pend = 0; 3590 *pend = 0;
2888 w->wd = inotify_add_watch (fs_fd, path, mask); 3591 w->wd = inotify_add_watch (fs_fd, path, mask);
2889 } 3592 }
2890 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3593 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2891 } 3594 }
2892 } 3595 }
2893 3596
2894 if (w->wd >= 0) 3597 if (w->wd >= 0)
2895 {
2896 struct statfs sfs;
2897
2898 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3598 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2899 3599
2900 /* now local changes will be tracked by inotify, but remote changes won't */ 3600 /* now re-arm timer, if required */
2901 /* unless the filesystem it known to be local, we therefore still poll */ 3601 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); 3602 ev_timer_again (EV_A_ &w->timer);
2915 } 3603 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2916} 3604}
2917 3605
2918static void noinline 3606static void noinline
2919infy_del (EV_P_ ev_stat *w) 3607infy_del (EV_P_ ev_stat *w)
2920{ 3608{
… …
2923 3611
2924 if (wd < 0) 3612 if (wd < 0)
2925 return; 3613 return;
2926 3614
2927 w->wd = -2; 3615 w->wd = -2;
2928 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3616 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2929 wlist_del (&fs_hash [slot].head, (WL)w); 3617 wlist_del (&fs_hash [slot].head, (WL)w);
2930 3618
2931 /* remove this watcher, if others are watching it, they will rearm */ 3619 /* remove this watcher, if others are watching it, they will rearm */
2932 inotify_rm_watch (fs_fd, wd); 3620 inotify_rm_watch (fs_fd, wd);
2933} 3621}
… …
2935static void noinline 3623static void noinline
2936infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3624infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2937{ 3625{
2938 if (slot < 0) 3626 if (slot < 0)
2939 /* overflow, need to check for all hash slots */ 3627 /* overflow, need to check for all hash slots */
2940 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3628 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2941 infy_wd (EV_A_ slot, wd, ev); 3629 infy_wd (EV_A_ slot, wd, ev);
2942 else 3630 else
2943 { 3631 {
2944 WL w_; 3632 WL w_;
2945 3633
2946 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3634 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2947 { 3635 {
2948 ev_stat *w = (ev_stat *)w_; 3636 ev_stat *w = (ev_stat *)w_;
2949 w_ = w_->next; /* lets us remove this watcher and all before it */ 3637 w_ = w_->next; /* lets us remove this watcher and all before it */
2950 3638
2951 if (w->wd == wd || wd == -1) 3639 if (w->wd == wd || wd == -1)
2952 { 3640 {
2953 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3641 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2954 { 3642 {
2955 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3643 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2956 w->wd = -1; 3644 w->wd = -1;
2957 infy_add (EV_A_ w); /* re-add, no matter what */ 3645 infy_add (EV_A_ w); /* re-add, no matter what */
2958 } 3646 }
2959 3647
2960 stat_timer_cb (EV_A_ &w->timer, 0); 3648 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2965 3653
2966static void 3654static void
2967infy_cb (EV_P_ ev_io *w, int revents) 3655infy_cb (EV_P_ ev_io *w, int revents)
2968{ 3656{
2969 char buf [EV_INOTIFY_BUFSIZE]; 3657 char buf [EV_INOTIFY_BUFSIZE];
2970 struct inotify_event *ev = (struct inotify_event *)buf;
2971 int ofs; 3658 int ofs;
2972 int len = read (fs_fd, buf, sizeof (buf)); 3659 int len = read (fs_fd, buf, sizeof (buf));
2973 3660
2974 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3661 for (ofs = 0; ofs < len; )
3662 {
3663 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2975 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3664 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3665 ofs += sizeof (struct inotify_event) + ev->len;
3666 }
2976} 3667}
2977 3668
2978inline_size void 3669inline_size void ecb_cold
2979check_2625 (EV_P) 3670ev_check_2625 (EV_P)
2980{ 3671{
2981 /* kernels < 2.6.25 are borked 3672 /* kernels < 2.6.25 are borked
2982 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3673 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2983 */ 3674 */
2984 struct utsname buf; 3675 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; 3676 return;
2997 3677
2998 fs_2625 = 1; 3678 fs_2625 = 1;
2999} 3679}
3000 3680
… …
3015 if (fs_fd != -2) 3695 if (fs_fd != -2)
3016 return; 3696 return;
3017 3697
3018 fs_fd = -1; 3698 fs_fd = -1;
3019 3699
3020 check_2625 (EV_A); 3700 ev_check_2625 (EV_A);
3021 3701
3022 fs_fd = infy_newfd (); 3702 fs_fd = infy_newfd ();
3023 3703
3024 if (fs_fd >= 0) 3704 if (fs_fd >= 0)
3025 { 3705 {
3026 fd_intern (fs_fd); 3706 fd_intern (fs_fd);
3027 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3707 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
3028 ev_set_priority (&fs_w, EV_MAXPRI); 3708 ev_set_priority (&fs_w, EV_MAXPRI);
3029 ev_io_start (EV_A_ &fs_w); 3709 ev_io_start (EV_A_ &fs_w);
3710 ev_unref (EV_A);
3030 } 3711 }
3031} 3712}
3032 3713
3033inline_size void 3714inline_size void
3034infy_fork (EV_P) 3715infy_fork (EV_P)
… …
3036 int slot; 3717 int slot;
3037 3718
3038 if (fs_fd < 0) 3719 if (fs_fd < 0)
3039 return; 3720 return;
3040 3721
3722 ev_ref (EV_A);
3041 ev_io_stop (EV_A_ &fs_w); 3723 ev_io_stop (EV_A_ &fs_w);
3042 close (fs_fd); 3724 close (fs_fd);
3043 fs_fd = infy_newfd (); 3725 fs_fd = infy_newfd ();
3044 3726
3045 if (fs_fd >= 0) 3727 if (fs_fd >= 0)
3046 { 3728 {
3047 fd_intern (fs_fd); 3729 fd_intern (fs_fd);
3048 ev_io_set (&fs_w, fs_fd, EV_READ); 3730 ev_io_set (&fs_w, fs_fd, EV_READ);
3049 ev_io_start (EV_A_ &fs_w); 3731 ev_io_start (EV_A_ &fs_w);
3732 ev_unref (EV_A);
3050 } 3733 }
3051 3734
3052 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3735 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3053 { 3736 {
3054 WL w_ = fs_hash [slot].head; 3737 WL w_ = fs_hash [slot].head;
3055 fs_hash [slot].head = 0; 3738 fs_hash [slot].head = 0;
3056 3739
3057 while (w_) 3740 while (w_)
… …
3062 w->wd = -1; 3745 w->wd = -1;
3063 3746
3064 if (fs_fd >= 0) 3747 if (fs_fd >= 0)
3065 infy_add (EV_A_ w); /* re-add, no matter what */ 3748 infy_add (EV_A_ w); /* re-add, no matter what */
3066 else 3749 else
3750 {
3751 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3752 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3067 ev_timer_again (EV_A_ &w->timer); 3753 ev_timer_again (EV_A_ &w->timer);
3754 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3755 }
3068 } 3756 }
3069 } 3757 }
3070} 3758}
3071 3759
3072#endif 3760#endif
… …
3089static void noinline 3777static void noinline
3090stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3778stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3091{ 3779{
3092 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3780 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3093 3781
3094 /* we copy this here each the time so that */ 3782 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); 3783 ev_stat_stat (EV_A_ w);
3098 3784
3099 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3785 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3100 if ( 3786 if (
3101 w->prev.st_dev != w->attr.st_dev 3787 prev.st_dev != w->attr.st_dev
3102 || w->prev.st_ino != w->attr.st_ino 3788 || prev.st_ino != w->attr.st_ino
3103 || w->prev.st_mode != w->attr.st_mode 3789 || prev.st_mode != w->attr.st_mode
3104 || w->prev.st_nlink != w->attr.st_nlink 3790 || prev.st_nlink != w->attr.st_nlink
3105 || w->prev.st_uid != w->attr.st_uid 3791 || prev.st_uid != w->attr.st_uid
3106 || w->prev.st_gid != w->attr.st_gid 3792 || prev.st_gid != w->attr.st_gid
3107 || w->prev.st_rdev != w->attr.st_rdev 3793 || prev.st_rdev != w->attr.st_rdev
3108 || w->prev.st_size != w->attr.st_size 3794 || prev.st_size != w->attr.st_size
3109 || w->prev.st_atime != w->attr.st_atime 3795 || prev.st_atime != w->attr.st_atime
3110 || w->prev.st_mtime != w->attr.st_mtime 3796 || prev.st_mtime != w->attr.st_mtime
3111 || w->prev.st_ctime != w->attr.st_ctime 3797 || prev.st_ctime != w->attr.st_ctime
3112 ) { 3798 ) {
3799 /* we only update w->prev on actual differences */
3800 /* in case we test more often than invoke the callback, */
3801 /* to ensure that prev is always different to attr */
3802 w->prev = prev;
3803
3113 #if EV_USE_INOTIFY 3804 #if EV_USE_INOTIFY
3114 if (fs_fd >= 0) 3805 if (fs_fd >= 0)
3115 { 3806 {
3116 infy_del (EV_A_ w); 3807 infy_del (EV_A_ w);
3117 infy_add (EV_A_ w); 3808 infy_add (EV_A_ w);
… …
3142 3833
3143 if (fs_fd >= 0) 3834 if (fs_fd >= 0)
3144 infy_add (EV_A_ w); 3835 infy_add (EV_A_ w);
3145 else 3836 else
3146#endif 3837#endif
3838 {
3147 ev_timer_again (EV_A_ &w->timer); 3839 ev_timer_again (EV_A_ &w->timer);
3840 ev_unref (EV_A);
3841 }
3148 3842
3149 ev_start (EV_A_ (W)w, 1); 3843 ev_start (EV_A_ (W)w, 1);
3150 3844
3151 EV_FREQUENT_CHECK; 3845 EV_FREQUENT_CHECK;
3152} 3846}
… …
3161 EV_FREQUENT_CHECK; 3855 EV_FREQUENT_CHECK;
3162 3856
3163#if EV_USE_INOTIFY 3857#if EV_USE_INOTIFY
3164 infy_del (EV_A_ w); 3858 infy_del (EV_A_ w);
3165#endif 3859#endif
3860
3861 if (ev_is_active (&w->timer))
3862 {
3863 ev_ref (EV_A);
3166 ev_timer_stop (EV_A_ &w->timer); 3864 ev_timer_stop (EV_A_ &w->timer);
3865 }
3167 3866
3168 ev_stop (EV_A_ (W)w); 3867 ev_stop (EV_A_ (W)w);
3169 3868
3170 EV_FREQUENT_CHECK; 3869 EV_FREQUENT_CHECK;
3171} 3870}
… …
3216 3915
3217 EV_FREQUENT_CHECK; 3916 EV_FREQUENT_CHECK;
3218} 3917}
3219#endif 3918#endif
3220 3919
3920#if EV_PREPARE_ENABLE
3221void 3921void
3222ev_prepare_start (EV_P_ ev_prepare *w) 3922ev_prepare_start (EV_P_ ev_prepare *w)
3223{ 3923{
3224 if (expect_false (ev_is_active (w))) 3924 if (expect_false (ev_is_active (w)))
3225 return; 3925 return;
… …
3251 3951
3252 ev_stop (EV_A_ (W)w); 3952 ev_stop (EV_A_ (W)w);
3253 3953
3254 EV_FREQUENT_CHECK; 3954 EV_FREQUENT_CHECK;
3255} 3955}
3956#endif
3256 3957
3958#if EV_CHECK_ENABLE
3257void 3959void
3258ev_check_start (EV_P_ ev_check *w) 3960ev_check_start (EV_P_ ev_check *w)
3259{ 3961{
3260 if (expect_false (ev_is_active (w))) 3962 if (expect_false (ev_is_active (w)))
3261 return; 3963 return;
… …
3287 3989
3288 ev_stop (EV_A_ (W)w); 3990 ev_stop (EV_A_ (W)w);
3289 3991
3290 EV_FREQUENT_CHECK; 3992 EV_FREQUENT_CHECK;
3291} 3993}
3994#endif
3292 3995
3293#if EV_EMBED_ENABLE 3996#if EV_EMBED_ENABLE
3294void noinline 3997void noinline
3295ev_embed_sweep (EV_P_ ev_embed *w) 3998ev_embed_sweep (EV_P_ ev_embed *w)
3296{ 3999{
3297 ev_loop (w->other, EVLOOP_NONBLOCK); 4000 ev_run (w->other, EVRUN_NOWAIT);
3298} 4001}
3299 4002
3300static void 4003static void
3301embed_io_cb (EV_P_ ev_io *io, int revents) 4004embed_io_cb (EV_P_ ev_io *io, int revents)
3302{ 4005{
3303 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4006 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3304 4007
3305 if (ev_cb (w)) 4008 if (ev_cb (w))
3306 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4009 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3307 else 4010 else
3308 ev_loop (w->other, EVLOOP_NONBLOCK); 4011 ev_run (w->other, EVRUN_NOWAIT);
3309} 4012}
3310 4013
3311static void 4014static void
3312embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4015embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3313{ 4016{
… …
3317 EV_P = w->other; 4020 EV_P = w->other;
3318 4021
3319 while (fdchangecnt) 4022 while (fdchangecnt)
3320 { 4023 {
3321 fd_reify (EV_A); 4024 fd_reify (EV_A);
3322 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4025 ev_run (EV_A_ EVRUN_NOWAIT);
3323 } 4026 }
3324 } 4027 }
3325} 4028}
3326 4029
3327static void 4030static void
… …
3333 4036
3334 { 4037 {
3335 EV_P = w->other; 4038 EV_P = w->other;
3336 4039
3337 ev_loop_fork (EV_A); 4040 ev_loop_fork (EV_A);
3338 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4041 ev_run (EV_A_ EVRUN_NOWAIT);
3339 } 4042 }
3340 4043
3341 ev_embed_start (EV_A_ w); 4044 ev_embed_start (EV_A_ w);
3342} 4045}
3343 4046
… …
3391 4094
3392 ev_io_stop (EV_A_ &w->io); 4095 ev_io_stop (EV_A_ &w->io);
3393 ev_prepare_stop (EV_A_ &w->prepare); 4096 ev_prepare_stop (EV_A_ &w->prepare);
3394 ev_fork_stop (EV_A_ &w->fork); 4097 ev_fork_stop (EV_A_ &w->fork);
3395 4098
4099 ev_stop (EV_A_ (W)w);
4100
3396 EV_FREQUENT_CHECK; 4101 EV_FREQUENT_CHECK;
3397} 4102}
3398#endif 4103#endif
3399 4104
3400#if EV_FORK_ENABLE 4105#if EV_FORK_ENABLE
… …
3433 4138
3434 EV_FREQUENT_CHECK; 4139 EV_FREQUENT_CHECK;
3435} 4140}
3436#endif 4141#endif
3437 4142
4143#if EV_CLEANUP_ENABLE
4144void
4145ev_cleanup_start (EV_P_ ev_cleanup *w)
4146{
4147 if (expect_false (ev_is_active (w)))
4148 return;
4149
4150 EV_FREQUENT_CHECK;
4151
4152 ev_start (EV_A_ (W)w, ++cleanupcnt);
4153 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4154 cleanups [cleanupcnt - 1] = w;
4155
4156 /* cleanup watchers should never keep a refcount on the loop */
4157 ev_unref (EV_A);
4158 EV_FREQUENT_CHECK;
4159}
4160
4161void
4162ev_cleanup_stop (EV_P_ ev_cleanup *w)
4163{
4164 clear_pending (EV_A_ (W)w);
4165 if (expect_false (!ev_is_active (w)))
4166 return;
4167
4168 EV_FREQUENT_CHECK;
4169 ev_ref (EV_A);
4170
4171 {
4172 int active = ev_active (w);
4173
4174 cleanups [active - 1] = cleanups [--cleanupcnt];
4175 ev_active (cleanups [active - 1]) = active;
4176 }
4177
4178 ev_stop (EV_A_ (W)w);
4179
4180 EV_FREQUENT_CHECK;
4181}
4182#endif
4183
3438#if EV_ASYNC_ENABLE 4184#if EV_ASYNC_ENABLE
3439void 4185void
3440ev_async_start (EV_P_ ev_async *w) 4186ev_async_start (EV_P_ ev_async *w)
3441{ 4187{
3442 if (expect_false (ev_is_active (w))) 4188 if (expect_false (ev_is_active (w)))
3443 return; 4189 return;
4190
4191 w->sent = 0;
3444 4192
3445 evpipe_init (EV_A); 4193 evpipe_init (EV_A);
3446 4194
3447 EV_FREQUENT_CHECK; 4195 EV_FREQUENT_CHECK;
3448 4196
… …
3526{ 4274{
3527 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4275 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3528 4276
3529 if (expect_false (!once)) 4277 if (expect_false (!once))
3530 { 4278 {
3531 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4279 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3532 return; 4280 return;
3533 } 4281 }
3534 4282
3535 once->cb = cb; 4283 once->cb = cb;
3536 once->arg = arg; 4284 once->arg = arg;
… …
3551} 4299}
3552 4300
3553/*****************************************************************************/ 4301/*****************************************************************************/
3554 4302
3555#if EV_WALK_ENABLE 4303#if EV_WALK_ENABLE
3556void 4304void ecb_cold
3557ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4305ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3558{ 4306{
3559 int i, j; 4307 int i, j;
3560 ev_watcher_list *wl, *wn; 4308 ev_watcher_list *wl, *wn;
3561 4309
… …
3605 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4353 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3606#endif 4354#endif
3607 4355
3608#if EV_IDLE_ENABLE 4356#if EV_IDLE_ENABLE
3609 if (types & EV_IDLE) 4357 if (types & EV_IDLE)
3610 for (j = NUMPRI; i--; ) 4358 for (j = NUMPRI; j--; )
3611 for (i = idlecnt [j]; i--; ) 4359 for (i = idlecnt [j]; i--; )
3612 cb (EV_A_ EV_IDLE, idles [j][i]); 4360 cb (EV_A_ EV_IDLE, idles [j][i]);
3613#endif 4361#endif
3614 4362
3615#if EV_FORK_ENABLE 4363#if EV_FORK_ENABLE
… …
3623 if (types & EV_ASYNC) 4371 if (types & EV_ASYNC)
3624 for (i = asynccnt; i--; ) 4372 for (i = asynccnt; i--; )
3625 cb (EV_A_ EV_ASYNC, asyncs [i]); 4373 cb (EV_A_ EV_ASYNC, asyncs [i]);
3626#endif 4374#endif
3627 4375
4376#if EV_PREPARE_ENABLE
3628 if (types & EV_PREPARE) 4377 if (types & EV_PREPARE)
3629 for (i = preparecnt; i--; ) 4378 for (i = preparecnt; i--; )
3630#if EV_EMBED_ENABLE 4379# if EV_EMBED_ENABLE
3631 if (ev_cb (prepares [i]) != embed_prepare_cb) 4380 if (ev_cb (prepares [i]) != embed_prepare_cb)
3632#endif 4381# endif
3633 cb (EV_A_ EV_PREPARE, prepares [i]); 4382 cb (EV_A_ EV_PREPARE, prepares [i]);
4383#endif
3634 4384
4385#if EV_CHECK_ENABLE
3635 if (types & EV_CHECK) 4386 if (types & EV_CHECK)
3636 for (i = checkcnt; i--; ) 4387 for (i = checkcnt; i--; )
3637 cb (EV_A_ EV_CHECK, checks [i]); 4388 cb (EV_A_ EV_CHECK, checks [i]);
4389#endif
3638 4390
4391#if EV_SIGNAL_ENABLE
3639 if (types & EV_SIGNAL) 4392 if (types & EV_SIGNAL)
3640 for (i = 0; i < EV_NSIG - 1; ++i) 4393 for (i = 0; i < EV_NSIG - 1; ++i)
3641 for (wl = signals [i].head; wl; ) 4394 for (wl = signals [i].head; wl; )
3642 { 4395 {
3643 wn = wl->next; 4396 wn = wl->next;
3644 cb (EV_A_ EV_SIGNAL, wl); 4397 cb (EV_A_ EV_SIGNAL, wl);
3645 wl = wn; 4398 wl = wn;
3646 } 4399 }
4400#endif
3647 4401
4402#if EV_CHILD_ENABLE
3648 if (types & EV_CHILD) 4403 if (types & EV_CHILD)
3649 for (i = EV_PID_HASHSIZE; i--; ) 4404 for (i = (EV_PID_HASHSIZE); i--; )
3650 for (wl = childs [i]; wl; ) 4405 for (wl = childs [i]; wl; )
3651 { 4406 {
3652 wn = wl->next; 4407 wn = wl->next;
3653 cb (EV_A_ EV_CHILD, wl); 4408 cb (EV_A_ EV_CHILD, wl);
3654 wl = wn; 4409 wl = wn;
3655 } 4410 }
4411#endif
3656/* EV_STAT 0x00001000 /* stat data changed */ 4412/* EV_STAT 0x00001000 /* stat data changed */
3657/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4413/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3658} 4414}
3659#endif 4415#endif
3660 4416
3661#if EV_MULTIPLICITY 4417#if EV_MULTIPLICITY
3662 #include "ev_wrap.h" 4418 #include "ev_wrap.h"
3663#endif 4419#endif
3664 4420
3665#ifdef __cplusplus 4421EV_CPP(})
3666}
3667#endif
3668 4422

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