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

Comparing libev/ev.c (file contents):
Revision 1.306 by root, Sun Jul 19 06:35:25 2009 UTC vs.
Revision 1.397 by root, Wed Aug 24 16:13:41 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/* one some platforms, NSIG is one too large. we do not bother */
193#if defined (EV_NSIG) 215#if defined (EV_NSIG)
194/* use what's provided */ 216/* use what's provided */
195#elif defined (NSIG) 217#elif defined (NSIG)
196# define EV_NSIG (NSIG) 218# define EV_NSIG (NSIG)
197#elif defined(_NSIG) 219#elif defined(_NSIG)
… …
205#elif defined (MAXSIG) 227#elif defined (MAXSIG)
206# define EV_NSIG (MAXSIG+1) 228# define EV_NSIG (MAXSIG+1)
207#elif defined (MAX_SIG) 229#elif defined (MAX_SIG)
208# define EV_NSIG (MAX_SIG+1) 230# define EV_NSIG (MAX_SIG+1)
209#elif defined (SIGARRAYSIZE) 231#elif defined (SIGARRAYSIZE)
210# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
211#elif defined (_sys_nsig) 233#elif defined (_sys_nsig)
212# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
213#else 235#else
214# error "unable to find value for NSIG, please report" 236# error "unable to find value for NSIG, please report"
215/* 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! :) */
216# define EV_NSIG 65 239# define EV_NSIG 65
240#endif
241
242#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0
217#endif 244#endif
218 245
219#ifndef EV_USE_CLOCK_SYSCALL 246#ifndef EV_USE_CLOCK_SYSCALL
220# if __linux && __GLIBC__ >= 2 247# if __linux && __GLIBC__ >= 2
221# define EV_USE_CLOCK_SYSCALL 1 248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
222# else 249# else
223# define EV_USE_CLOCK_SYSCALL 0 250# define EV_USE_CLOCK_SYSCALL 0
224# endif 251# endif
225#endif 252#endif
226 253
227#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
228# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
229# define EV_USE_MONOTONIC 1 256# define EV_USE_MONOTONIC EV_FEATURE_OS
230# else 257# else
231# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
232# endif 259# endif
233#endif 260#endif
234 261
… …
236# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
237#endif 264#endif
238 265
239#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
240# if _POSIX_C_SOURCE >= 199309L 267# if _POSIX_C_SOURCE >= 199309L
241# define EV_USE_NANOSLEEP 1 268# define EV_USE_NANOSLEEP EV_FEATURE_OS
242# else 269# else
243# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
244# endif 271# endif
245#endif 272#endif
246 273
247#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
248# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
249#endif 276#endif
250 277
251#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
252# ifdef _WIN32 279# ifdef _WIN32
253# define EV_USE_POLL 0 280# define EV_USE_POLL 0
254# else 281# else
255# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
256# endif 283# endif
257#endif 284#endif
258 285
259#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
260# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
261# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
262# else 289# else
263# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
264# endif 291# endif
265#endif 292#endif
266 293
… …
272# define EV_USE_PORT 0 299# define EV_USE_PORT 0
273#endif 300#endif
274 301
275#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
276# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
277# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
278# else 305# else
279# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
280# endif 307# endif
281#endif 308#endif
282 309
283#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
284# if EV_MINIMAL 311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
285# define EV_PID_HASHSIZE 1
286# else
287# define EV_PID_HASHSIZE 16
288# endif
289#endif 312#endif
290 313
291#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
292# if EV_MINIMAL 315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
293# define EV_INOTIFY_HASHSIZE 1
294# else
295# define EV_INOTIFY_HASHSIZE 16
296# endif
297#endif 316#endif
298 317
299#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
300# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
301# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
302# else 321# else
303# define EV_USE_EVENTFD 0 322# define EV_USE_EVENTFD 0
304# endif 323# endif
305#endif 324#endif
306 325
307#ifndef EV_USE_SIGNALFD 326#ifndef EV_USE_SIGNALFD
308# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 327# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
309# define EV_USE_SIGNALFD 1 328# define EV_USE_SIGNALFD EV_FEATURE_OS
310# else 329# else
311# define EV_USE_SIGNALFD 0 330# define EV_USE_SIGNALFD 0
312# endif 331# endif
313#endif 332#endif
314 333
… …
317# define EV_USE_4HEAP 1 336# define EV_USE_4HEAP 1
318# define EV_HEAP_CACHE_AT 1 337# define EV_HEAP_CACHE_AT 1
319#endif 338#endif
320 339
321#ifndef EV_VERIFY 340#ifndef EV_VERIFY
322# define EV_VERIFY !EV_MINIMAL 341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
323#endif 342#endif
324 343
325#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
326# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
327#endif 346#endif
328 347
329#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
330# define EV_HEAP_CACHE_AT !EV_MINIMAL 349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
331#endif 350#endif
332 351
333/* 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, */
334/* which makes programs even slower. might work on other unices, too. */ 353/* which makes programs even slower. might work on other unices, too. */
335#if EV_USE_CLOCK_SYSCALL 354#if EV_USE_CLOCK_SYSCALL
… …
344# endif 363# endif
345#endif 364#endif
346 365
347/* 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 */
348 367
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
349#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
350# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
351# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
352#endif 377#endif
353 378
… …
360# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
361# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
362#endif 387#endif
363 388
364#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
365# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
366# include <sys/select.h> 392# include <sys/select.h>
367# endif 393# endif
368#endif 394#endif
369 395
370#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
371# include <sys/utsname.h>
372# include <sys/statfs.h> 397# include <sys/statfs.h>
373# include <sys/inotify.h> 398# include <sys/inotify.h>
374/* 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 */
375# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
376# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
… …
387# include <stdint.h> 412# include <stdint.h>
388# ifndef EFD_NONBLOCK 413# ifndef EFD_NONBLOCK
389# define EFD_NONBLOCK O_NONBLOCK 414# define EFD_NONBLOCK O_NONBLOCK
390# endif 415# endif
391# ifndef EFD_CLOEXEC 416# ifndef EFD_CLOEXEC
417# ifdef O_CLOEXEC
392# define EFD_CLOEXEC O_CLOEXEC 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
393# endif 422# endif
394# ifdef __cplusplus 423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
395extern "C" { 424#endif
425
426#if EV_USE_SIGNALFD
427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
428# include <stdint.h>
429# ifndef SFD_NONBLOCK
430# define SFD_NONBLOCK O_NONBLOCK
396# endif 431# endif
397int eventfd (unsigned int initval, int flags); 432# ifndef SFD_CLOEXEC
398# ifdef __cplusplus 433# ifdef O_CLOEXEC
399} 434# define SFD_CLOEXEC O_CLOEXEC
435# else
436# define SFD_CLOEXEC 02000000
437# endif
400# endif 438# endif
401#endif 439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
402 440
403#if EV_USE_SIGNALFD 441struct signalfd_siginfo
404# include <sys/signalfd.h> 442{
443 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)];
445};
405#endif 446#endif
406 447
407/**/ 448/**/
408 449
409#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
410# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
411#else 452#else
412# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
413#endif 454#endif
414 455
415/* 456/*
416 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
417 * It is added to ev_rt_now when scheduling periodics
418 * to ensure progress, time-wise, even when rounding
419 * errors are against us.
420 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
421 * Better solutions welcome.
422 */ 459 */
423#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 */
424 462
425#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) */
426#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) */
427/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
428 465
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;
429#if __GNUC__ >= 4 510 #if __GNUC__
430# define expect(expr,value) __builtin_expect ((expr),(value)) 511 typedef signed long long int64_t;
431# 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
432#else 517#else
433# define expect(expr,value) (expr) 518 #include <inttypes.h>
434# define noinline
435# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
436# define inline
437# 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)))
438#endif 533 #endif
534#endif
439 535
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)
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)
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. */
440#define expect_false(expr) expect ((expr) != 0, 0) 678#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
441#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 ecb_cplusplus_does_not_suck
849 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
850 template<typename T, int N>
851 static inline int ecb_array_length (const T (&arr)[N])
852 {
853 return N;
854 }
855#else
856 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
857#endif
858
859#endif
860
861/* ECB.H END */
862
863#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
864/* if your architecture doesn't need memory fences, e.g. because it is
865 * single-cpu/core, or if you use libev in a project that doesn't use libev
866 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
867 * libev, in which casess the memory fences become nops.
868 * alternatively, you can remove this #error and link against libpthread,
869 * which will then provide the memory fences.
870 */
871# error "memory fences not defined for your architecture, please report"
872#endif
873
874#ifndef ECB_MEMORY_FENCE
875# define ECB_MEMORY_FENCE do { } while (0)
876# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
877# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
878#endif
879
880#define expect_false(cond) ecb_expect_false (cond)
881#define expect_true(cond) ecb_expect_true (cond)
882#define noinline ecb_noinline
883
442#define inline_size static inline 884#define inline_size ecb_inline
443 885
444#if EV_MINIMAL 886#if EV_FEATURE_CODE
887# define inline_speed ecb_inline
888#else
445# define inline_speed static noinline 889# define inline_speed static noinline
446#else
447# define inline_speed static inline
448#endif 890#endif
449 891
450#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 892#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
451 893
452#if EV_MINPRI == EV_MAXPRI 894#if EV_MINPRI == EV_MAXPRI
… …
465#define ev_active(w) ((W)(w))->active 907#define ev_active(w) ((W)(w))->active
466#define ev_at(w) ((WT)(w))->at 908#define ev_at(w) ((WT)(w))->at
467 909
468#if EV_USE_REALTIME 910#if EV_USE_REALTIME
469/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 911/* sig_atomic_t is used to avoid per-thread variables or locking but still */
470/* giving it a reasonably high chance of working on typical architetcures */ 912/* giving it a reasonably high chance of working on typical architectures */
471static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 913static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
472#endif 914#endif
473 915
474#if EV_USE_MONOTONIC 916#if EV_USE_MONOTONIC
475static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 917static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
476#endif 918#endif
477 919
920#ifndef EV_FD_TO_WIN32_HANDLE
921# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
922#endif
923#ifndef EV_WIN32_HANDLE_TO_FD
924# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
925#endif
926#ifndef EV_WIN32_CLOSE_FD
927# define EV_WIN32_CLOSE_FD(fd) close (fd)
928#endif
929
478#ifdef _WIN32 930#ifdef _WIN32
479# include "ev_win32.c" 931# include "ev_win32.c"
480#endif 932#endif
481 933
482/*****************************************************************************/ 934/*****************************************************************************/
483 935
936/* define a suitable floor function (only used by periodics atm) */
937
938#if EV_USE_FLOOR
939# include <math.h>
940# define ev_floor(v) floor (v)
941#else
942
943#include <float.h>
944
945/* a floor() replacement function, should be independent of ev_tstamp type */
946static ev_tstamp noinline
947ev_floor (ev_tstamp v)
948{
949 /* the choice of shift factor is not terribly important */
950#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
951 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
952#else
953 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
954#endif
955
956 /* argument too large for an unsigned long? */
957 if (expect_false (v >= shift))
958 {
959 ev_tstamp f;
960
961 if (v == v - 1.)
962 return v; /* very large number */
963
964 f = shift * ev_floor (v * (1. / shift));
965 return f + ev_floor (v - f);
966 }
967
968 /* special treatment for negative args? */
969 if (expect_false (v < 0.))
970 {
971 ev_tstamp f = -ev_floor (-v);
972
973 return f - (f == v ? 0 : 1);
974 }
975
976 /* fits into an unsigned long */
977 return (unsigned long)v;
978}
979
980#endif
981
982/*****************************************************************************/
983
984#ifdef __linux
985# include <sys/utsname.h>
986#endif
987
988static unsigned int noinline ecb_cold
989ev_linux_version (void)
990{
991#ifdef __linux
992 unsigned int v = 0;
993 struct utsname buf;
994 int i;
995 char *p = buf.release;
996
997 if (uname (&buf))
998 return 0;
999
1000 for (i = 3+1; --i; )
1001 {
1002 unsigned int c = 0;
1003
1004 for (;;)
1005 {
1006 if (*p >= '0' && *p <= '9')
1007 c = c * 10 + *p++ - '0';
1008 else
1009 {
1010 p += *p == '.';
1011 break;
1012 }
1013 }
1014
1015 v = (v << 8) | c;
1016 }
1017
1018 return v;
1019#else
1020 return 0;
1021#endif
1022}
1023
1024/*****************************************************************************/
1025
1026#if EV_AVOID_STDIO
1027static void noinline ecb_cold
1028ev_printerr (const char *msg)
1029{
1030 write (STDERR_FILENO, msg, strlen (msg));
1031}
1032#endif
1033
484static void (*syserr_cb)(const char *msg); 1034static void (*syserr_cb)(const char *msg);
485 1035
486void 1036void ecb_cold
487ev_set_syserr_cb (void (*cb)(const char *msg)) 1037ev_set_syserr_cb (void (*cb)(const char *msg))
488{ 1038{
489 syserr_cb = cb; 1039 syserr_cb = cb;
490} 1040}
491 1041
492static void noinline 1042static void noinline ecb_cold
493ev_syserr (const char *msg) 1043ev_syserr (const char *msg)
494{ 1044{
495 if (!msg) 1045 if (!msg)
496 msg = "(libev) system error"; 1046 msg = "(libev) system error";
497 1047
498 if (syserr_cb) 1048 if (syserr_cb)
499 syserr_cb (msg); 1049 syserr_cb (msg);
500 else 1050 else
501 { 1051 {
1052#if EV_AVOID_STDIO
1053 ev_printerr (msg);
1054 ev_printerr (": ");
1055 ev_printerr (strerror (errno));
1056 ev_printerr ("\n");
1057#else
502 perror (msg); 1058 perror (msg);
1059#endif
503 abort (); 1060 abort ();
504 } 1061 }
505} 1062}
506 1063
507static void * 1064static void *
508ev_realloc_emul (void *ptr, long size) 1065ev_realloc_emul (void *ptr, long size)
509{ 1066{
1067#if __GLIBC__
1068 return realloc (ptr, size);
1069#else
510 /* some systems, notably openbsd and darwin, fail to properly 1070 /* some systems, notably openbsd and darwin, fail to properly
511 * implement realloc (x, 0) (as required by both ansi c-98 and 1071 * implement realloc (x, 0) (as required by both ansi c-89 and
512 * the single unix specification, so work around them here. 1072 * the single unix specification, so work around them here.
513 */ 1073 */
514 1074
515 if (size) 1075 if (size)
516 return realloc (ptr, size); 1076 return realloc (ptr, size);
517 1077
518 free (ptr); 1078 free (ptr);
519 return 0; 1079 return 0;
1080#endif
520} 1081}
521 1082
522static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1083static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
523 1084
524void 1085void ecb_cold
525ev_set_allocator (void *(*cb)(void *ptr, long size)) 1086ev_set_allocator (void *(*cb)(void *ptr, long size))
526{ 1087{
527 alloc = cb; 1088 alloc = cb;
528} 1089}
529 1090
… …
532{ 1093{
533 ptr = alloc (ptr, size); 1094 ptr = alloc (ptr, size);
534 1095
535 if (!ptr && size) 1096 if (!ptr && size)
536 { 1097 {
1098#if EV_AVOID_STDIO
1099 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1100#else
537 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1101 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1102#endif
538 abort (); 1103 abort ();
539 } 1104 }
540 1105
541 return ptr; 1106 return ptr;
542} 1107}
… …
558 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1123 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
559 unsigned char unused; 1124 unsigned char unused;
560#if EV_USE_EPOLL 1125#if EV_USE_EPOLL
561 unsigned int egen; /* generation counter to counter epoll bugs */ 1126 unsigned int egen; /* generation counter to counter epoll bugs */
562#endif 1127#endif
563#if EV_SELECT_IS_WINSOCKET 1128#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
564 SOCKET handle; 1129 SOCKET handle;
1130#endif
1131#if EV_USE_IOCP
1132 OVERLAPPED or, ow;
565#endif 1133#endif
566} ANFD; 1134} ANFD;
567 1135
568/* stores the pending event set for a given watcher */ 1136/* stores the pending event set for a given watcher */
569typedef struct 1137typedef struct
… …
624 1192
625 static int ev_default_loop_ptr; 1193 static int ev_default_loop_ptr;
626 1194
627#endif 1195#endif
628 1196
629#if EV_MINIMAL < 2 1197#if EV_FEATURE_API
630# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1198# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
631# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1199# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
632# define EV_INVOKE_PENDING invoke_cb (EV_A) 1200# define EV_INVOKE_PENDING invoke_cb (EV_A)
633#else 1201#else
634# define EV_RELEASE_CB (void)0 1202# define EV_RELEASE_CB (void)0
635# define EV_ACQUIRE_CB (void)0 1203# define EV_ACQUIRE_CB (void)0
636# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1204# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
637#endif 1205#endif
638 1206
639#define EVUNLOOP_RECURSE 0x80 1207#define EVBREAK_RECURSE 0x80
640 1208
641/*****************************************************************************/ 1209/*****************************************************************************/
642 1210
643#ifndef EV_HAVE_EV_TIME 1211#ifndef EV_HAVE_EV_TIME
644ev_tstamp 1212ev_tstamp
… …
688 if (delay > 0.) 1256 if (delay > 0.)
689 { 1257 {
690#if EV_USE_NANOSLEEP 1258#if EV_USE_NANOSLEEP
691 struct timespec ts; 1259 struct timespec ts;
692 1260
693 ts.tv_sec = (time_t)delay; 1261 EV_TS_SET (ts, delay);
694 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
695
696 nanosleep (&ts, 0); 1262 nanosleep (&ts, 0);
697#elif defined(_WIN32) 1263#elif defined(_WIN32)
698 Sleep ((unsigned long)(delay * 1e3)); 1264 Sleep ((unsigned long)(delay * 1e3));
699#else 1265#else
700 struct timeval tv; 1266 struct timeval tv;
701 1267
702 tv.tv_sec = (time_t)delay;
703 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
704
705 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1268 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
706 /* something not guaranteed by newer posix versions, but guaranteed */ 1269 /* something not guaranteed by newer posix versions, but guaranteed */
707 /* by older ones */ 1270 /* by older ones */
1271 EV_TV_SET (tv, delay);
708 select (0, 0, 0, 0, &tv); 1272 select (0, 0, 0, 0, &tv);
709#endif 1273#endif
710 } 1274 }
711} 1275}
712 1276
713/*****************************************************************************/ 1277/*****************************************************************************/
714 1278
715#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1279#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
716 1280
717/* find a suitable new size for the given array, */ 1281/* find a suitable new size for the given array, */
718/* hopefully by rounding to a ncie-to-malloc size */ 1282/* hopefully by rounding to a nice-to-malloc size */
719inline_size int 1283inline_size int
720array_nextsize (int elem, int cur, int cnt) 1284array_nextsize (int elem, int cur, int cnt)
721{ 1285{
722 int ncur = cur + 1; 1286 int ncur = cur + 1;
723 1287
… …
735 } 1299 }
736 1300
737 return ncur; 1301 return ncur;
738} 1302}
739 1303
740static noinline void * 1304static void * noinline ecb_cold
741array_realloc (int elem, void *base, int *cur, int cnt) 1305array_realloc (int elem, void *base, int *cur, int cnt)
742{ 1306{
743 *cur = array_nextsize (elem, *cur, cnt); 1307 *cur = array_nextsize (elem, *cur, cnt);
744 return ev_realloc (base, elem * *cur); 1308 return ev_realloc (base, elem * *cur);
745} 1309}
… …
748 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1312 memset ((void *)(base), 0, sizeof (*(base)) * (count))
749 1313
750#define array_needsize(type,base,cur,cnt,init) \ 1314#define array_needsize(type,base,cur,cnt,init) \
751 if (expect_false ((cnt) > (cur))) \ 1315 if (expect_false ((cnt) > (cur))) \
752 { \ 1316 { \
753 int ocur_ = (cur); \ 1317 int ecb_unused ocur_ = (cur); \
754 (base) = (type *)array_realloc \ 1318 (base) = (type *)array_realloc \
755 (sizeof (type), (base), &(cur), (cnt)); \ 1319 (sizeof (type), (base), &(cur), (cnt)); \
756 init ((base) + (ocur_), (cur) - ocur_); \ 1320 init ((base) + (ocur_), (cur) - ocur_); \
757 } 1321 }
758 1322
… …
819} 1383}
820 1384
821/*****************************************************************************/ 1385/*****************************************************************************/
822 1386
823inline_speed void 1387inline_speed void
824fd_event_nc (EV_P_ int fd, int revents) 1388fd_event_nocheck (EV_P_ int fd, int revents)
825{ 1389{
826 ANFD *anfd = anfds + fd; 1390 ANFD *anfd = anfds + fd;
827 ev_io *w; 1391 ev_io *w;
828 1392
829 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1393 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
841fd_event (EV_P_ int fd, int revents) 1405fd_event (EV_P_ int fd, int revents)
842{ 1406{
843 ANFD *anfd = anfds + fd; 1407 ANFD *anfd = anfds + fd;
844 1408
845 if (expect_true (!anfd->reify)) 1409 if (expect_true (!anfd->reify))
846 fd_event_nc (EV_A_ fd, revents); 1410 fd_event_nocheck (EV_A_ fd, revents);
847} 1411}
848 1412
849void 1413void
850ev_feed_fd_event (EV_P_ int fd, int revents) 1414ev_feed_fd_event (EV_P_ int fd, int revents)
851{ 1415{
852 if (fd >= 0 && fd < anfdmax) 1416 if (fd >= 0 && fd < anfdmax)
853 fd_event_nc (EV_A_ fd, revents); 1417 fd_event_nocheck (EV_A_ fd, revents);
854} 1418}
855 1419
856/* make sure the external fd watch events are in-sync */ 1420/* make sure the external fd watch events are in-sync */
857/* with the kernel/libev internal state */ 1421/* with the kernel/libev internal state */
858inline_size void 1422inline_size void
859fd_reify (EV_P) 1423fd_reify (EV_P)
860{ 1424{
861 int i; 1425 int i;
862 1426
1427#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1428 for (i = 0; i < fdchangecnt; ++i)
1429 {
1430 int fd = fdchanges [i];
1431 ANFD *anfd = anfds + fd;
1432
1433 if (anfd->reify & EV__IOFDSET && anfd->head)
1434 {
1435 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1436
1437 if (handle != anfd->handle)
1438 {
1439 unsigned long arg;
1440
1441 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1442
1443 /* handle changed, but fd didn't - we need to do it in two steps */
1444 backend_modify (EV_A_ fd, anfd->events, 0);
1445 anfd->events = 0;
1446 anfd->handle = handle;
1447 }
1448 }
1449 }
1450#endif
1451
863 for (i = 0; i < fdchangecnt; ++i) 1452 for (i = 0; i < fdchangecnt; ++i)
864 { 1453 {
865 int fd = fdchanges [i]; 1454 int fd = fdchanges [i];
866 ANFD *anfd = anfds + fd; 1455 ANFD *anfd = anfds + fd;
867 ev_io *w; 1456 ev_io *w;
868 1457
869 unsigned char events = 0; 1458 unsigned char o_events = anfd->events;
1459 unsigned char o_reify = anfd->reify;
870 1460
871 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1461 anfd->reify = 0;
872 events |= (unsigned char)w->events;
873 1462
874#if EV_SELECT_IS_WINSOCKET 1463 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
875 if (events)
876 { 1464 {
877 unsigned long arg; 1465 anfd->events = 0;
878 #ifdef EV_FD_TO_WIN32_HANDLE 1466
879 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1467 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
880 #else 1468 anfd->events |= (unsigned char)w->events;
881 anfd->handle = _get_osfhandle (fd); 1469
882 #endif 1470 if (o_events != anfd->events)
883 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1471 o_reify = EV__IOFDSET; /* actually |= */
884 } 1472 }
885#endif
886 1473
887 { 1474 if (o_reify & EV__IOFDSET)
888 unsigned char o_events = anfd->events;
889 unsigned char o_reify = anfd->reify;
890
891 anfd->reify = 0;
892 anfd->events = events;
893
894 if (o_events != events || o_reify & EV__IOFDSET)
895 backend_modify (EV_A_ fd, o_events, events); 1475 backend_modify (EV_A_ fd, o_events, anfd->events);
896 }
897 } 1476 }
898 1477
899 fdchangecnt = 0; 1478 fdchangecnt = 0;
900} 1479}
901 1480
… …
913 fdchanges [fdchangecnt - 1] = fd; 1492 fdchanges [fdchangecnt - 1] = fd;
914 } 1493 }
915} 1494}
916 1495
917/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1496/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
918inline_speed void 1497inline_speed void ecb_cold
919fd_kill (EV_P_ int fd) 1498fd_kill (EV_P_ int fd)
920{ 1499{
921 ev_io *w; 1500 ev_io *w;
922 1501
923 while ((w = (ev_io *)anfds [fd].head)) 1502 while ((w = (ev_io *)anfds [fd].head))
… …
925 ev_io_stop (EV_A_ w); 1504 ev_io_stop (EV_A_ w);
926 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1505 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
927 } 1506 }
928} 1507}
929 1508
930/* check whether the given fd is atcually valid, for error recovery */ 1509/* check whether the given fd is actually valid, for error recovery */
931inline_size int 1510inline_size int ecb_cold
932fd_valid (int fd) 1511fd_valid (int fd)
933{ 1512{
934#ifdef _WIN32 1513#ifdef _WIN32
935 return _get_osfhandle (fd) != -1; 1514 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
936#else 1515#else
937 return fcntl (fd, F_GETFD) != -1; 1516 return fcntl (fd, F_GETFD) != -1;
938#endif 1517#endif
939} 1518}
940 1519
941/* called on EBADF to verify fds */ 1520/* called on EBADF to verify fds */
942static void noinline 1521static void noinline ecb_cold
943fd_ebadf (EV_P) 1522fd_ebadf (EV_P)
944{ 1523{
945 int fd; 1524 int fd;
946 1525
947 for (fd = 0; fd < anfdmax; ++fd) 1526 for (fd = 0; fd < anfdmax; ++fd)
… …
949 if (!fd_valid (fd) && errno == EBADF) 1528 if (!fd_valid (fd) && errno == EBADF)
950 fd_kill (EV_A_ fd); 1529 fd_kill (EV_A_ fd);
951} 1530}
952 1531
953/* called on ENOMEM in select/poll to kill some fds and retry */ 1532/* called on ENOMEM in select/poll to kill some fds and retry */
954static void noinline 1533static void noinline ecb_cold
955fd_enomem (EV_P) 1534fd_enomem (EV_P)
956{ 1535{
957 int fd; 1536 int fd;
958 1537
959 for (fd = anfdmax; fd--; ) 1538 for (fd = anfdmax; fd--; )
960 if (anfds [fd].events) 1539 if (anfds [fd].events)
961 { 1540 {
962 fd_kill (EV_A_ fd); 1541 fd_kill (EV_A_ fd);
963 return; 1542 break;
964 } 1543 }
965} 1544}
966 1545
967/* usually called after fork if backend needs to re-arm all fds from scratch */ 1546/* usually called after fork if backend needs to re-arm all fds from scratch */
968static void noinline 1547static void noinline
… …
977 anfds [fd].emask = 0; 1556 anfds [fd].emask = 0;
978 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1557 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
979 } 1558 }
980} 1559}
981 1560
1561/* used to prepare libev internal fd's */
1562/* this is not fork-safe */
1563inline_speed void
1564fd_intern (int fd)
1565{
1566#ifdef _WIN32
1567 unsigned long arg = 1;
1568 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1569#else
1570 fcntl (fd, F_SETFD, FD_CLOEXEC);
1571 fcntl (fd, F_SETFL, O_NONBLOCK);
1572#endif
1573}
1574
982/*****************************************************************************/ 1575/*****************************************************************************/
983 1576
984/* 1577/*
985 * the heap functions want a real array index. array index 0 uis guaranteed to not 1578 * the heap functions want a real array index. array index 0 is guaranteed to not
986 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1579 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
987 * the branching factor of the d-tree. 1580 * the branching factor of the d-tree.
988 */ 1581 */
989 1582
990/* 1583/*
… …
1058 1651
1059 for (;;) 1652 for (;;)
1060 { 1653 {
1061 int c = k << 1; 1654 int c = k << 1;
1062 1655
1063 if (c > N + HEAP0 - 1) 1656 if (c >= N + HEAP0)
1064 break; 1657 break;
1065 1658
1066 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1659 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1067 ? 1 : 0; 1660 ? 1 : 0;
1068 1661
… …
1104 1697
1105/* move an element suitably so it is in a correct place */ 1698/* move an element suitably so it is in a correct place */
1106inline_size void 1699inline_size void
1107adjustheap (ANHE *heap, int N, int k) 1700adjustheap (ANHE *heap, int N, int k)
1108{ 1701{
1109 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1702 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1110 upheap (heap, k); 1703 upheap (heap, k);
1111 else 1704 else
1112 downheap (heap, N, k); 1705 downheap (heap, N, k);
1113} 1706}
1114 1707
… …
1127/*****************************************************************************/ 1720/*****************************************************************************/
1128 1721
1129/* associate signal watchers to a signal signal */ 1722/* associate signal watchers to a signal signal */
1130typedef struct 1723typedef struct
1131{ 1724{
1725 EV_ATOMIC_T pending;
1132#if EV_MULTIPLICITY 1726#if EV_MULTIPLICITY
1133 EV_P; 1727 EV_P;
1134#endif 1728#endif
1135 WL head; 1729 WL head;
1136 EV_ATOMIC_T gotsig;
1137} ANSIG; 1730} ANSIG;
1138 1731
1139static ANSIG signals [EV_NSIG - 1]; 1732static ANSIG signals [EV_NSIG - 1];
1140static EV_ATOMIC_T gotsig;
1141 1733
1142/*****************************************************************************/ 1734/*****************************************************************************/
1143 1735
1144/* used to prepare libev internal fd's */ 1736#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1145/* this is not fork-safe */
1146inline_speed void
1147fd_intern (int fd)
1148{
1149#ifdef _WIN32
1150 unsigned long arg = 1;
1151 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1152#else
1153 fcntl (fd, F_SETFD, FD_CLOEXEC);
1154 fcntl (fd, F_SETFL, O_NONBLOCK);
1155#endif
1156}
1157 1737
1158static void noinline 1738static void noinline ecb_cold
1159evpipe_init (EV_P) 1739evpipe_init (EV_P)
1160{ 1740{
1161 if (!ev_is_active (&pipe_w)) 1741 if (!ev_is_active (&pipe_w))
1162 { 1742 {
1163#if EV_USE_EVENTFD 1743# if EV_USE_EVENTFD
1164 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1744 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1165 if (evfd < 0 && errno == EINVAL) 1745 if (evfd < 0 && errno == EINVAL)
1166 evfd = eventfd (0, 0); 1746 evfd = eventfd (0, 0);
1167 1747
1168 if (evfd >= 0) 1748 if (evfd >= 0)
… …
1170 evpipe [0] = -1; 1750 evpipe [0] = -1;
1171 fd_intern (evfd); /* doing it twice doesn't hurt */ 1751 fd_intern (evfd); /* doing it twice doesn't hurt */
1172 ev_io_set (&pipe_w, evfd, EV_READ); 1752 ev_io_set (&pipe_w, evfd, EV_READ);
1173 } 1753 }
1174 else 1754 else
1175#endif 1755# endif
1176 { 1756 {
1177 while (pipe (evpipe)) 1757 while (pipe (evpipe))
1178 ev_syserr ("(libev) error creating signal/async pipe"); 1758 ev_syserr ("(libev) error creating signal/async pipe");
1179 1759
1180 fd_intern (evpipe [0]); 1760 fd_intern (evpipe [0]);
… …
1185 ev_io_start (EV_A_ &pipe_w); 1765 ev_io_start (EV_A_ &pipe_w);
1186 ev_unref (EV_A); /* watcher should not keep loop alive */ 1766 ev_unref (EV_A); /* watcher should not keep loop alive */
1187 } 1767 }
1188} 1768}
1189 1769
1190inline_size void 1770inline_speed void
1191evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1771evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1192{ 1772{
1193 if (!*flag) 1773 if (expect_true (*flag))
1774 return;
1775
1776 *flag = 1;
1777
1778 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1779
1780 pipe_write_skipped = 1;
1781
1782 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1783
1784 if (pipe_write_wanted)
1194 { 1785 {
1786 int old_errno;
1787
1788 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1789
1195 int old_errno = errno; /* save errno because write might clobber it */ 1790 old_errno = errno; /* save errno because write will clobber it */
1196
1197 *flag = 1;
1198 1791
1199#if EV_USE_EVENTFD 1792#if EV_USE_EVENTFD
1200 if (evfd >= 0) 1793 if (evfd >= 0)
1201 { 1794 {
1202 uint64_t counter = 1; 1795 uint64_t counter = 1;
1203 write (evfd, &counter, sizeof (uint64_t)); 1796 write (evfd, &counter, sizeof (uint64_t));
1204 } 1797 }
1205 else 1798 else
1206#endif 1799#endif
1800 {
1801 /* win32 people keep sending patches that change this write() to send() */
1802 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1803 /* so when you think this write should be a send instead, please find out */
1804 /* where your send() is from - it's definitely not the microsoft send, and */
1805 /* tell me. thank you. */
1207 write (evpipe [1], &old_errno, 1); 1806 write (evpipe [1], &(evpipe [1]), 1);
1807 }
1208 1808
1209 errno = old_errno; 1809 errno = old_errno;
1210 } 1810 }
1211} 1811}
1212 1812
1213/* called whenever the libev signal pipe */ 1813/* called whenever the libev signal pipe */
1214/* got some events (signal, async) */ 1814/* got some events (signal, async) */
1215static void 1815static void
1216pipecb (EV_P_ ev_io *iow, int revents) 1816pipecb (EV_P_ ev_io *iow, int revents)
1217{ 1817{
1818 int i;
1819
1820 if (revents & EV_READ)
1821 {
1218#if EV_USE_EVENTFD 1822#if EV_USE_EVENTFD
1219 if (evfd >= 0) 1823 if (evfd >= 0)
1220 { 1824 {
1221 uint64_t counter; 1825 uint64_t counter;
1222 read (evfd, &counter, sizeof (uint64_t)); 1826 read (evfd, &counter, sizeof (uint64_t));
1223 } 1827 }
1224 else 1828 else
1225#endif 1829#endif
1226 { 1830 {
1227 char dummy; 1831 char dummy;
1832 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1228 read (evpipe [0], &dummy, 1); 1833 read (evpipe [0], &dummy, 1);
1834 }
1835 }
1836
1837 pipe_write_skipped = 0;
1838
1839#if EV_SIGNAL_ENABLE
1840 if (sig_pending)
1229 } 1841 {
1842 sig_pending = 0;
1230 1843
1231 if (gotsig && ev_is_default_loop (EV_A))
1232 {
1233 int signum;
1234 gotsig = 0;
1235
1236 for (signum = EV_NSIG - 1; signum--; ) 1844 for (i = EV_NSIG - 1; i--; )
1237 if (signals [signum].gotsig) 1845 if (expect_false (signals [i].pending))
1238 ev_feed_signal_event (EV_A_ signum + 1); 1846 ev_feed_signal_event (EV_A_ i + 1);
1239 } 1847 }
1848#endif
1240 1849
1241#if EV_ASYNC_ENABLE 1850#if EV_ASYNC_ENABLE
1242 if (gotasync) 1851 if (async_pending)
1243 { 1852 {
1244 int i; 1853 async_pending = 0;
1245 gotasync = 0;
1246 1854
1247 for (i = asynccnt; i--; ) 1855 for (i = asynccnt; i--; )
1248 if (asyncs [i]->sent) 1856 if (asyncs [i]->sent)
1249 { 1857 {
1250 asyncs [i]->sent = 0; 1858 asyncs [i]->sent = 0;
… …
1254#endif 1862#endif
1255} 1863}
1256 1864
1257/*****************************************************************************/ 1865/*****************************************************************************/
1258 1866
1867void
1868ev_feed_signal (int signum)
1869{
1870#if EV_MULTIPLICITY
1871 EV_P = signals [signum - 1].loop;
1872
1873 if (!EV_A)
1874 return;
1875#endif
1876
1877 if (!ev_active (&pipe_w))
1878 return;
1879
1880 signals [signum - 1].pending = 1;
1881 evpipe_write (EV_A_ &sig_pending);
1882}
1883
1259static void 1884static void
1260ev_sighandler (int signum) 1885ev_sighandler (int signum)
1261{ 1886{
1262#if EV_MULTIPLICITY
1263 EV_P = signals [signum - 1].loop;
1264#endif
1265
1266#if _WIN32 1887#ifdef _WIN32
1267 signal (signum, ev_sighandler); 1888 signal (signum, ev_sighandler);
1268#endif 1889#endif
1269 1890
1270 signals [signum - 1].gotsig = 1; 1891 ev_feed_signal (signum);
1271 evpipe_write (EV_A_ &gotsig);
1272} 1892}
1273 1893
1274void noinline 1894void noinline
1275ev_feed_signal_event (EV_P_ int signum) 1895ev_feed_signal_event (EV_P_ int signum)
1276{ 1896{
1277 WL w; 1897 WL w;
1278 1898
1899 if (expect_false (signum <= 0 || signum > EV_NSIG))
1900 return;
1901
1902 --signum;
1903
1279#if EV_MULTIPLICITY 1904#if EV_MULTIPLICITY
1280 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1905 /* it is permissible to try to feed a signal to the wrong loop */
1281#endif 1906 /* or, likely more useful, feeding a signal nobody is waiting for */
1282 1907
1283 if (signum <= 0 || signum > EV_NSIG) 1908 if (expect_false (signals [signum].loop != EV_A))
1284 return; 1909 return;
1910#endif
1285 1911
1286 --signum;
1287
1288 signals [signum].gotsig = 0; 1912 signals [signum].pending = 0;
1289 1913
1290 for (w = signals [signum].head; w; w = w->next) 1914 for (w = signals [signum].head; w; w = w->next)
1291 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1915 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1292} 1916}
1293 1917
… …
1309 break; 1933 break;
1310 } 1934 }
1311} 1935}
1312#endif 1936#endif
1313 1937
1938#endif
1939
1314/*****************************************************************************/ 1940/*****************************************************************************/
1315 1941
1942#if EV_CHILD_ENABLE
1316static WL childs [EV_PID_HASHSIZE]; 1943static WL childs [EV_PID_HASHSIZE];
1317
1318#ifndef _WIN32
1319 1944
1320static ev_signal childev; 1945static ev_signal childev;
1321 1946
1322#ifndef WIFCONTINUED 1947#ifndef WIFCONTINUED
1323# define WIFCONTINUED(status) 0 1948# define WIFCONTINUED(status) 0
… …
1328child_reap (EV_P_ int chain, int pid, int status) 1953child_reap (EV_P_ int chain, int pid, int status)
1329{ 1954{
1330 ev_child *w; 1955 ev_child *w;
1331 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1956 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1332 1957
1333 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1958 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1334 { 1959 {
1335 if ((w->pid == pid || !w->pid) 1960 if ((w->pid == pid || !w->pid)
1336 && (!traced || (w->flags & 1))) 1961 && (!traced || (w->flags & 1)))
1337 { 1962 {
1338 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1963 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1363 /* make sure we are called again until all children have been reaped */ 1988 /* make sure we are called again until all children have been reaped */
1364 /* we need to do it this way so that the callback gets called before we continue */ 1989 /* we need to do it this way so that the callback gets called before we continue */
1365 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1990 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1366 1991
1367 child_reap (EV_A_ pid, pid, status); 1992 child_reap (EV_A_ pid, pid, status);
1368 if (EV_PID_HASHSIZE > 1) 1993 if ((EV_PID_HASHSIZE) > 1)
1369 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1994 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1370} 1995}
1371 1996
1372#endif 1997#endif
1373 1998
1374/*****************************************************************************/ 1999/*****************************************************************************/
1375 2000
2001#if EV_USE_IOCP
2002# include "ev_iocp.c"
2003#endif
1376#if EV_USE_PORT 2004#if EV_USE_PORT
1377# include "ev_port.c" 2005# include "ev_port.c"
1378#endif 2006#endif
1379#if EV_USE_KQUEUE 2007#if EV_USE_KQUEUE
1380# include "ev_kqueue.c" 2008# include "ev_kqueue.c"
… …
1387#endif 2015#endif
1388#if EV_USE_SELECT 2016#if EV_USE_SELECT
1389# include "ev_select.c" 2017# include "ev_select.c"
1390#endif 2018#endif
1391 2019
1392int 2020int ecb_cold
1393ev_version_major (void) 2021ev_version_major (void)
1394{ 2022{
1395 return EV_VERSION_MAJOR; 2023 return EV_VERSION_MAJOR;
1396} 2024}
1397 2025
1398int 2026int ecb_cold
1399ev_version_minor (void) 2027ev_version_minor (void)
1400{ 2028{
1401 return EV_VERSION_MINOR; 2029 return EV_VERSION_MINOR;
1402} 2030}
1403 2031
1404/* return true if we are running with elevated privileges and should ignore env variables */ 2032/* return true if we are running with elevated privileges and should ignore env variables */
1405int inline_size 2033int inline_size ecb_cold
1406enable_secure (void) 2034enable_secure (void)
1407{ 2035{
1408#ifdef _WIN32 2036#ifdef _WIN32
1409 return 0; 2037 return 0;
1410#else 2038#else
1411 return getuid () != geteuid () 2039 return getuid () != geteuid ()
1412 || getgid () != getegid (); 2040 || getgid () != getegid ();
1413#endif 2041#endif
1414} 2042}
1415 2043
1416unsigned int 2044unsigned int ecb_cold
1417ev_supported_backends (void) 2045ev_supported_backends (void)
1418{ 2046{
1419 unsigned int flags = 0; 2047 unsigned int flags = 0;
1420 2048
1421 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2049 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1425 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2053 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1426 2054
1427 return flags; 2055 return flags;
1428} 2056}
1429 2057
1430unsigned int 2058unsigned int ecb_cold
1431ev_recommended_backends (void) 2059ev_recommended_backends (void)
1432{ 2060{
1433 unsigned int flags = ev_supported_backends (); 2061 unsigned int flags = ev_supported_backends ();
1434 2062
1435#ifndef __NetBSD__ 2063#ifndef __NetBSD__
… …
1440#ifdef __APPLE__ 2068#ifdef __APPLE__
1441 /* only select works correctly on that "unix-certified" platform */ 2069 /* only select works correctly on that "unix-certified" platform */
1442 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2070 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1443 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2071 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1444#endif 2072#endif
2073#ifdef __FreeBSD__
2074 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2075#endif
1445 2076
1446 return flags; 2077 return flags;
1447} 2078}
1448 2079
1449unsigned int 2080unsigned int ecb_cold
1450ev_embeddable_backends (void) 2081ev_embeddable_backends (void)
1451{ 2082{
1452 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2083 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1453 2084
1454 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2085 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1455 /* please fix it and tell me how to detect the fix */ 2086 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1456 flags &= ~EVBACKEND_EPOLL; 2087 flags &= ~EVBACKEND_EPOLL;
1457 2088
1458 return flags; 2089 return flags;
1459} 2090}
1460 2091
1461unsigned int 2092unsigned int
1462ev_backend (EV_P) 2093ev_backend (EV_P)
1463{ 2094{
1464 return backend; 2095 return backend;
1465} 2096}
1466 2097
1467#if EV_MINIMAL < 2 2098#if EV_FEATURE_API
1468unsigned int 2099unsigned int
1469ev_loop_count (EV_P) 2100ev_iteration (EV_P)
1470{ 2101{
1471 return loop_count; 2102 return loop_count;
1472} 2103}
1473 2104
1474unsigned int 2105unsigned int
1475ev_loop_depth (EV_P) 2106ev_depth (EV_P)
1476{ 2107{
1477 return loop_depth; 2108 return loop_depth;
1478} 2109}
1479 2110
1480void 2111void
… …
1499ev_userdata (EV_P) 2130ev_userdata (EV_P)
1500{ 2131{
1501 return userdata; 2132 return userdata;
1502} 2133}
1503 2134
2135void
1504void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2136ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1505{ 2137{
1506 invoke_cb = invoke_pending_cb; 2138 invoke_cb = invoke_pending_cb;
1507} 2139}
1508 2140
2141void
1509void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2142ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1510{ 2143{
1511 release_cb = release; 2144 release_cb = release;
1512 acquire_cb = acquire; 2145 acquire_cb = acquire;
1513} 2146}
1514#endif 2147#endif
1515 2148
1516/* initialise a loop structure, must be zero-initialised */ 2149/* initialise a loop structure, must be zero-initialised */
1517static void noinline 2150static void noinline ecb_cold
1518loop_init (EV_P_ unsigned int flags) 2151loop_init (EV_P_ unsigned int flags)
1519{ 2152{
1520 if (!backend) 2153 if (!backend)
1521 { 2154 {
2155 origflags = flags;
2156
1522#if EV_USE_REALTIME 2157#if EV_USE_REALTIME
1523 if (!have_realtime) 2158 if (!have_realtime)
1524 { 2159 {
1525 struct timespec ts; 2160 struct timespec ts;
1526 2161
… …
1548 if (!(flags & EVFLAG_NOENV) 2183 if (!(flags & EVFLAG_NOENV)
1549 && !enable_secure () 2184 && !enable_secure ()
1550 && getenv ("LIBEV_FLAGS")) 2185 && getenv ("LIBEV_FLAGS"))
1551 flags = atoi (getenv ("LIBEV_FLAGS")); 2186 flags = atoi (getenv ("LIBEV_FLAGS"));
1552 2187
1553 ev_rt_now = ev_time (); 2188 ev_rt_now = ev_time ();
1554 mn_now = get_clock (); 2189 mn_now = get_clock ();
1555 now_floor = mn_now; 2190 now_floor = mn_now;
1556 rtmn_diff = ev_rt_now - mn_now; 2191 rtmn_diff = ev_rt_now - mn_now;
1557#if EV_MINIMAL < 2 2192#if EV_FEATURE_API
1558 invoke_cb = ev_invoke_pending; 2193 invoke_cb = ev_invoke_pending;
1559#endif 2194#endif
1560 2195
1561 io_blocktime = 0.; 2196 io_blocktime = 0.;
1562 timeout_blocktime = 0.; 2197 timeout_blocktime = 0.;
1563 backend = 0; 2198 backend = 0;
1564 backend_fd = -1; 2199 backend_fd = -1;
1565 gotasync = 0; 2200 sig_pending = 0;
2201#if EV_ASYNC_ENABLE
2202 async_pending = 0;
2203#endif
2204 pipe_write_skipped = 0;
2205 pipe_write_wanted = 0;
1566#if EV_USE_INOTIFY 2206#if EV_USE_INOTIFY
1567 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2207 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1568#endif 2208#endif
1569#if EV_USE_SIGNALFD 2209#if EV_USE_SIGNALFD
1570 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 2210 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1571#endif 2211#endif
1572 2212
1573 if (!(flags & 0x0000ffffU)) 2213 if (!(flags & EVBACKEND_MASK))
1574 flags |= ev_recommended_backends (); 2214 flags |= ev_recommended_backends ();
1575 2215
2216#if EV_USE_IOCP
2217 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2218#endif
1576#if EV_USE_PORT 2219#if EV_USE_PORT
1577 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2220 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1578#endif 2221#endif
1579#if EV_USE_KQUEUE 2222#if EV_USE_KQUEUE
1580 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2223 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1589 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2232 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1590#endif 2233#endif
1591 2234
1592 ev_prepare_init (&pending_w, pendingcb); 2235 ev_prepare_init (&pending_w, pendingcb);
1593 2236
2237#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1594 ev_init (&pipe_w, pipecb); 2238 ev_init (&pipe_w, pipecb);
1595 ev_set_priority (&pipe_w, EV_MAXPRI); 2239 ev_set_priority (&pipe_w, EV_MAXPRI);
2240#endif
1596 } 2241 }
1597} 2242}
1598 2243
1599/* free up a loop structure */ 2244/* free up a loop structure */
1600static void noinline 2245void ecb_cold
1601loop_destroy (EV_P) 2246ev_loop_destroy (EV_P)
1602{ 2247{
1603 int i; 2248 int i;
2249
2250#if EV_MULTIPLICITY
2251 /* mimic free (0) */
2252 if (!EV_A)
2253 return;
2254#endif
2255
2256#if EV_CLEANUP_ENABLE
2257 /* queue cleanup watchers (and execute them) */
2258 if (expect_false (cleanupcnt))
2259 {
2260 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2261 EV_INVOKE_PENDING;
2262 }
2263#endif
2264
2265#if EV_CHILD_ENABLE
2266 if (ev_is_active (&childev))
2267 {
2268 ev_ref (EV_A); /* child watcher */
2269 ev_signal_stop (EV_A_ &childev);
2270 }
2271#endif
1604 2272
1605 if (ev_is_active (&pipe_w)) 2273 if (ev_is_active (&pipe_w))
1606 { 2274 {
1607 /*ev_ref (EV_A);*/ 2275 /*ev_ref (EV_A);*/
1608 /*ev_io_stop (EV_A_ &pipe_w);*/ 2276 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1612 close (evfd); 2280 close (evfd);
1613#endif 2281#endif
1614 2282
1615 if (evpipe [0] >= 0) 2283 if (evpipe [0] >= 0)
1616 { 2284 {
1617 close (evpipe [0]); 2285 EV_WIN32_CLOSE_FD (evpipe [0]);
1618 close (evpipe [1]); 2286 EV_WIN32_CLOSE_FD (evpipe [1]);
1619 } 2287 }
1620 } 2288 }
1621 2289
1622#if EV_USE_SIGNALFD 2290#if EV_USE_SIGNALFD
1623 if (ev_is_active (&sigfd_w)) 2291 if (ev_is_active (&sigfd_w))
1624 {
1625 /*ev_ref (EV_A);*/
1626 /*ev_io_stop (EV_A_ &sigfd_w);*/
1627
1628 close (sigfd); 2292 close (sigfd);
1629 }
1630#endif 2293#endif
1631 2294
1632#if EV_USE_INOTIFY 2295#if EV_USE_INOTIFY
1633 if (fs_fd >= 0) 2296 if (fs_fd >= 0)
1634 close (fs_fd); 2297 close (fs_fd);
1635#endif 2298#endif
1636 2299
1637 if (backend_fd >= 0) 2300 if (backend_fd >= 0)
1638 close (backend_fd); 2301 close (backend_fd);
1639 2302
2303#if EV_USE_IOCP
2304 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2305#endif
1640#if EV_USE_PORT 2306#if EV_USE_PORT
1641 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2307 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1642#endif 2308#endif
1643#if EV_USE_KQUEUE 2309#if EV_USE_KQUEUE
1644 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2310 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1671 array_free (periodic, EMPTY); 2337 array_free (periodic, EMPTY);
1672#endif 2338#endif
1673#if EV_FORK_ENABLE 2339#if EV_FORK_ENABLE
1674 array_free (fork, EMPTY); 2340 array_free (fork, EMPTY);
1675#endif 2341#endif
2342#if EV_CLEANUP_ENABLE
2343 array_free (cleanup, EMPTY);
2344#endif
1676 array_free (prepare, EMPTY); 2345 array_free (prepare, EMPTY);
1677 array_free (check, EMPTY); 2346 array_free (check, EMPTY);
1678#if EV_ASYNC_ENABLE 2347#if EV_ASYNC_ENABLE
1679 array_free (async, EMPTY); 2348 array_free (async, EMPTY);
1680#endif 2349#endif
1681 2350
1682 backend = 0; 2351 backend = 0;
2352
2353#if EV_MULTIPLICITY
2354 if (ev_is_default_loop (EV_A))
2355#endif
2356 ev_default_loop_ptr = 0;
2357#if EV_MULTIPLICITY
2358 else
2359 ev_free (EV_A);
2360#endif
1683} 2361}
1684 2362
1685#if EV_USE_INOTIFY 2363#if EV_USE_INOTIFY
1686inline_size void infy_fork (EV_P); 2364inline_size void infy_fork (EV_P);
1687#endif 2365#endif
… …
1702 infy_fork (EV_A); 2380 infy_fork (EV_A);
1703#endif 2381#endif
1704 2382
1705 if (ev_is_active (&pipe_w)) 2383 if (ev_is_active (&pipe_w))
1706 { 2384 {
1707 /* this "locks" the handlers against writing to the pipe */ 2385 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1708 /* while we modify the fd vars */
1709 gotsig = 1;
1710#if EV_ASYNC_ENABLE
1711 gotasync = 1;
1712#endif
1713 2386
1714 ev_ref (EV_A); 2387 ev_ref (EV_A);
1715 ev_io_stop (EV_A_ &pipe_w); 2388 ev_io_stop (EV_A_ &pipe_w);
1716 2389
1717#if EV_USE_EVENTFD 2390#if EV_USE_EVENTFD
… …
1719 close (evfd); 2392 close (evfd);
1720#endif 2393#endif
1721 2394
1722 if (evpipe [0] >= 0) 2395 if (evpipe [0] >= 0)
1723 { 2396 {
1724 close (evpipe [0]); 2397 EV_WIN32_CLOSE_FD (evpipe [0]);
1725 close (evpipe [1]); 2398 EV_WIN32_CLOSE_FD (evpipe [1]);
1726 } 2399 }
1727 2400
2401#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1728 evpipe_init (EV_A); 2402 evpipe_init (EV_A);
1729 /* now iterate over everything, in case we missed something */ 2403 /* now iterate over everything, in case we missed something */
1730 pipecb (EV_A_ &pipe_w, EV_READ); 2404 pipecb (EV_A_ &pipe_w, EV_READ);
2405#endif
1731 } 2406 }
1732 2407
1733 postfork = 0; 2408 postfork = 0;
1734} 2409}
1735 2410
1736#if EV_MULTIPLICITY 2411#if EV_MULTIPLICITY
1737 2412
1738struct ev_loop * 2413struct ev_loop * ecb_cold
1739ev_loop_new (unsigned int flags) 2414ev_loop_new (unsigned int flags)
1740{ 2415{
1741 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2416 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1742 2417
1743 memset (EV_A, 0, sizeof (struct ev_loop)); 2418 memset (EV_A, 0, sizeof (struct ev_loop));
1744 loop_init (EV_A_ flags); 2419 loop_init (EV_A_ flags);
1745 2420
1746 if (ev_backend (EV_A)) 2421 if (ev_backend (EV_A))
1747 return EV_A; 2422 return EV_A;
1748 2423
2424 ev_free (EV_A);
1749 return 0; 2425 return 0;
1750} 2426}
1751 2427
1752void
1753ev_loop_destroy (EV_P)
1754{
1755 loop_destroy (EV_A);
1756 ev_free (loop);
1757}
1758
1759void
1760ev_loop_fork (EV_P)
1761{
1762 postfork = 1; /* must be in line with ev_default_fork */
1763}
1764#endif /* multiplicity */ 2428#endif /* multiplicity */
1765 2429
1766#if EV_VERIFY 2430#if EV_VERIFY
1767static void noinline 2431static void noinline ecb_cold
1768verify_watcher (EV_P_ W w) 2432verify_watcher (EV_P_ W w)
1769{ 2433{
1770 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2434 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1771 2435
1772 if (w->pending) 2436 if (w->pending)
1773 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2437 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1774} 2438}
1775 2439
1776static void noinline 2440static void noinline ecb_cold
1777verify_heap (EV_P_ ANHE *heap, int N) 2441verify_heap (EV_P_ ANHE *heap, int N)
1778{ 2442{
1779 int i; 2443 int i;
1780 2444
1781 for (i = HEAP0; i < N + HEAP0; ++i) 2445 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1786 2450
1787 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2451 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1788 } 2452 }
1789} 2453}
1790 2454
1791static void noinline 2455static void noinline ecb_cold
1792array_verify (EV_P_ W *ws, int cnt) 2456array_verify (EV_P_ W *ws, int cnt)
1793{ 2457{
1794 while (cnt--) 2458 while (cnt--)
1795 { 2459 {
1796 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2460 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1797 verify_watcher (EV_A_ ws [cnt]); 2461 verify_watcher (EV_A_ ws [cnt]);
1798 } 2462 }
1799} 2463}
1800#endif 2464#endif
1801 2465
1802#if EV_MINIMAL < 2 2466#if EV_FEATURE_API
1803void 2467void ecb_cold
1804ev_loop_verify (EV_P) 2468ev_verify (EV_P)
1805{ 2469{
1806#if EV_VERIFY 2470#if EV_VERIFY
1807 int i; 2471 int i;
1808 WL w; 2472 WL w;
1809 2473
… …
1843#if EV_FORK_ENABLE 2507#if EV_FORK_ENABLE
1844 assert (forkmax >= forkcnt); 2508 assert (forkmax >= forkcnt);
1845 array_verify (EV_A_ (W *)forks, forkcnt); 2509 array_verify (EV_A_ (W *)forks, forkcnt);
1846#endif 2510#endif
1847 2511
2512#if EV_CLEANUP_ENABLE
2513 assert (cleanupmax >= cleanupcnt);
2514 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2515#endif
2516
1848#if EV_ASYNC_ENABLE 2517#if EV_ASYNC_ENABLE
1849 assert (asyncmax >= asynccnt); 2518 assert (asyncmax >= asynccnt);
1850 array_verify (EV_A_ (W *)asyncs, asynccnt); 2519 array_verify (EV_A_ (W *)asyncs, asynccnt);
1851#endif 2520#endif
1852 2521
2522#if EV_PREPARE_ENABLE
1853 assert (preparemax >= preparecnt); 2523 assert (preparemax >= preparecnt);
1854 array_verify (EV_A_ (W *)prepares, preparecnt); 2524 array_verify (EV_A_ (W *)prepares, preparecnt);
2525#endif
1855 2526
2527#if EV_CHECK_ENABLE
1856 assert (checkmax >= checkcnt); 2528 assert (checkmax >= checkcnt);
1857 array_verify (EV_A_ (W *)checks, checkcnt); 2529 array_verify (EV_A_ (W *)checks, checkcnt);
2530#endif
1858 2531
1859# if 0 2532# if 0
2533#if EV_CHILD_ENABLE
1860 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2534 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1861 for (signum = EV_NSIG; signum--; ) if (signals [signum].gotsig) 2535 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2536#endif
1862# endif 2537# endif
1863#endif 2538#endif
1864} 2539}
1865#endif 2540#endif
1866 2541
1867#if EV_MULTIPLICITY 2542#if EV_MULTIPLICITY
1868struct ev_loop * 2543struct ev_loop * ecb_cold
1869ev_default_loop_init (unsigned int flags)
1870#else 2544#else
1871int 2545int
2546#endif
1872ev_default_loop (unsigned int flags) 2547ev_default_loop (unsigned int flags)
1873#endif
1874{ 2548{
1875 if (!ev_default_loop_ptr) 2549 if (!ev_default_loop_ptr)
1876 { 2550 {
1877#if EV_MULTIPLICITY 2551#if EV_MULTIPLICITY
1878 EV_P = ev_default_loop_ptr = &default_loop_struct; 2552 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1882 2556
1883 loop_init (EV_A_ flags); 2557 loop_init (EV_A_ flags);
1884 2558
1885 if (ev_backend (EV_A)) 2559 if (ev_backend (EV_A))
1886 { 2560 {
1887#ifndef _WIN32 2561#if EV_CHILD_ENABLE
1888 ev_signal_init (&childev, childcb, SIGCHLD); 2562 ev_signal_init (&childev, childcb, SIGCHLD);
1889 ev_set_priority (&childev, EV_MAXPRI); 2563 ev_set_priority (&childev, EV_MAXPRI);
1890 ev_signal_start (EV_A_ &childev); 2564 ev_signal_start (EV_A_ &childev);
1891 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2565 ev_unref (EV_A); /* child watcher should not keep loop alive */
1892#endif 2566#endif
… …
1897 2571
1898 return ev_default_loop_ptr; 2572 return ev_default_loop_ptr;
1899} 2573}
1900 2574
1901void 2575void
1902ev_default_destroy (void) 2576ev_loop_fork (EV_P)
1903{ 2577{
1904#if EV_MULTIPLICITY
1905 EV_P = ev_default_loop_ptr;
1906#endif
1907
1908 ev_default_loop_ptr = 0;
1909
1910#ifndef _WIN32
1911 ev_ref (EV_A); /* child watcher */
1912 ev_signal_stop (EV_A_ &childev);
1913#endif
1914
1915 loop_destroy (EV_A);
1916}
1917
1918void
1919ev_default_fork (void)
1920{
1921#if EV_MULTIPLICITY
1922 EV_P = ev_default_loop_ptr;
1923#endif
1924
1925 postfork = 1; /* must be in line with ev_loop_fork */ 2578 postfork = 1; /* must be in line with ev_default_fork */
1926} 2579}
1927 2580
1928/*****************************************************************************/ 2581/*****************************************************************************/
1929 2582
1930void 2583void
… …
1952 2605
1953 for (pri = NUMPRI; pri--; ) 2606 for (pri = NUMPRI; pri--; )
1954 while (pendingcnt [pri]) 2607 while (pendingcnt [pri])
1955 { 2608 {
1956 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2609 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1957
1958 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1959 /* ^ this is no longer true, as pending_w could be here */
1960 2610
1961 p->w->pending = 0; 2611 p->w->pending = 0;
1962 EV_CB_INVOKE (p->w, p->events); 2612 EV_CB_INVOKE (p->w, p->events);
1963 EV_FREQUENT_CHECK; 2613 EV_FREQUENT_CHECK;
1964 } 2614 }
… …
2021 EV_FREQUENT_CHECK; 2671 EV_FREQUENT_CHECK;
2022 feed_reverse (EV_A_ (W)w); 2672 feed_reverse (EV_A_ (W)w);
2023 } 2673 }
2024 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2674 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2025 2675
2026 feed_reverse_done (EV_A_ EV_TIMEOUT); 2676 feed_reverse_done (EV_A_ EV_TIMER);
2027 } 2677 }
2028} 2678}
2029 2679
2030#if EV_PERIODIC_ENABLE 2680#if EV_PERIODIC_ENABLE
2681
2682static void noinline
2683periodic_recalc (EV_P_ ev_periodic *w)
2684{
2685 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2686 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2687
2688 /* the above almost always errs on the low side */
2689 while (at <= ev_rt_now)
2690 {
2691 ev_tstamp nat = at + w->interval;
2692
2693 /* when resolution fails us, we use ev_rt_now */
2694 if (expect_false (nat == at))
2695 {
2696 at = ev_rt_now;
2697 break;
2698 }
2699
2700 at = nat;
2701 }
2702
2703 ev_at (w) = at;
2704}
2705
2031/* make periodics pending */ 2706/* make periodics pending */
2032inline_size void 2707inline_size void
2033periodics_reify (EV_P) 2708periodics_reify (EV_P)
2034{ 2709{
2035 EV_FREQUENT_CHECK; 2710 EV_FREQUENT_CHECK;
… …
2054 ANHE_at_cache (periodics [HEAP0]); 2729 ANHE_at_cache (periodics [HEAP0]);
2055 downheap (periodics, periodiccnt, HEAP0); 2730 downheap (periodics, periodiccnt, HEAP0);
2056 } 2731 }
2057 else if (w->interval) 2732 else if (w->interval)
2058 { 2733 {
2059 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2734 periodic_recalc (EV_A_ w);
2060 /* if next trigger time is not sufficiently in the future, put it there */
2061 /* this might happen because of floating point inexactness */
2062 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2063 {
2064 ev_at (w) += w->interval;
2065
2066 /* if interval is unreasonably low we might still have a time in the past */
2067 /* so correct this. this will make the periodic very inexact, but the user */
2068 /* has effectively asked to get triggered more often than possible */
2069 if (ev_at (w) < ev_rt_now)
2070 ev_at (w) = ev_rt_now;
2071 }
2072
2073 ANHE_at_cache (periodics [HEAP0]); 2735 ANHE_at_cache (periodics [HEAP0]);
2074 downheap (periodics, periodiccnt, HEAP0); 2736 downheap (periodics, periodiccnt, HEAP0);
2075 } 2737 }
2076 else 2738 else
2077 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2739 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2084 feed_reverse_done (EV_A_ EV_PERIODIC); 2746 feed_reverse_done (EV_A_ EV_PERIODIC);
2085 } 2747 }
2086} 2748}
2087 2749
2088/* simply recalculate all periodics */ 2750/* simply recalculate all periodics */
2089/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2751/* TODO: maybe ensure that at least one event happens when jumping forward? */
2090static void noinline 2752static void noinline ecb_cold
2091periodics_reschedule (EV_P) 2753periodics_reschedule (EV_P)
2092{ 2754{
2093 int i; 2755 int i;
2094 2756
2095 /* adjust periodics after time jump */ 2757 /* adjust periodics after time jump */
… …
2098 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2760 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2099 2761
2100 if (w->reschedule_cb) 2762 if (w->reschedule_cb)
2101 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2763 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2102 else if (w->interval) 2764 else if (w->interval)
2103 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2765 periodic_recalc (EV_A_ w);
2104 2766
2105 ANHE_at_cache (periodics [i]); 2767 ANHE_at_cache (periodics [i]);
2106 } 2768 }
2107 2769
2108 reheap (periodics, periodiccnt); 2770 reheap (periodics, periodiccnt);
2109} 2771}
2110#endif 2772#endif
2111 2773
2112/* adjust all timers by a given offset */ 2774/* adjust all timers by a given offset */
2113static void noinline 2775static void noinline ecb_cold
2114timers_reschedule (EV_P_ ev_tstamp adjust) 2776timers_reschedule (EV_P_ ev_tstamp adjust)
2115{ 2777{
2116 int i; 2778 int i;
2117 2779
2118 for (i = 0; i < timercnt; ++i) 2780 for (i = 0; i < timercnt; ++i)
… …
2122 ANHE_at_cache (*he); 2784 ANHE_at_cache (*he);
2123 } 2785 }
2124} 2786}
2125 2787
2126/* fetch new monotonic and realtime times from the kernel */ 2788/* fetch new monotonic and realtime times from the kernel */
2127/* also detetc if there was a timejump, and act accordingly */ 2789/* also detect if there was a timejump, and act accordingly */
2128inline_speed void 2790inline_speed void
2129time_update (EV_P_ ev_tstamp max_block) 2791time_update (EV_P_ ev_tstamp max_block)
2130{ 2792{
2131#if EV_USE_MONOTONIC 2793#if EV_USE_MONOTONIC
2132 if (expect_true (have_monotonic)) 2794 if (expect_true (have_monotonic))
… …
2155 * doesn't hurt either as we only do this on time-jumps or 2817 * doesn't hurt either as we only do this on time-jumps or
2156 * in the unlikely event of having been preempted here. 2818 * in the unlikely event of having been preempted here.
2157 */ 2819 */
2158 for (i = 4; --i; ) 2820 for (i = 4; --i; )
2159 { 2821 {
2822 ev_tstamp diff;
2160 rtmn_diff = ev_rt_now - mn_now; 2823 rtmn_diff = ev_rt_now - mn_now;
2161 2824
2825 diff = odiff - rtmn_diff;
2826
2162 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2827 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2163 return; /* all is well */ 2828 return; /* all is well */
2164 2829
2165 ev_rt_now = ev_time (); 2830 ev_rt_now = ev_time ();
2166 mn_now = get_clock (); 2831 mn_now = get_clock ();
2167 now_floor = mn_now; 2832 now_floor = mn_now;
… …
2190 mn_now = ev_rt_now; 2855 mn_now = ev_rt_now;
2191 } 2856 }
2192} 2857}
2193 2858
2194void 2859void
2195ev_loop (EV_P_ int flags) 2860ev_run (EV_P_ int flags)
2196{ 2861{
2197#if EV_MINIMAL < 2 2862#if EV_FEATURE_API
2198 ++loop_depth; 2863 ++loop_depth;
2199#endif 2864#endif
2200 2865
2201 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2866 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2202 2867
2203 loop_done = EVUNLOOP_CANCEL; 2868 loop_done = EVBREAK_CANCEL;
2204 2869
2205 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2870 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2206 2871
2207 do 2872 do
2208 { 2873 {
2209#if EV_VERIFY >= 2 2874#if EV_VERIFY >= 2
2210 ev_loop_verify (EV_A); 2875 ev_verify (EV_A);
2211#endif 2876#endif
2212 2877
2213#ifndef _WIN32 2878#ifndef _WIN32
2214 if (expect_false (curpid)) /* penalise the forking check even more */ 2879 if (expect_false (curpid)) /* penalise the forking check even more */
2215 if (expect_false (getpid () != curpid)) 2880 if (expect_false (getpid () != curpid))
… …
2227 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2892 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2228 EV_INVOKE_PENDING; 2893 EV_INVOKE_PENDING;
2229 } 2894 }
2230#endif 2895#endif
2231 2896
2897#if EV_PREPARE_ENABLE
2232 /* queue prepare watchers (and execute them) */ 2898 /* queue prepare watchers (and execute them) */
2233 if (expect_false (preparecnt)) 2899 if (expect_false (preparecnt))
2234 { 2900 {
2235 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2901 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2236 EV_INVOKE_PENDING; 2902 EV_INVOKE_PENDING;
2237 } 2903 }
2904#endif
2238 2905
2239 if (expect_false (loop_done)) 2906 if (expect_false (loop_done))
2240 break; 2907 break;
2241 2908
2242 /* we might have forked, so reify kernel state if necessary */ 2909 /* we might have forked, so reify kernel state if necessary */
… …
2249 /* calculate blocking time */ 2916 /* calculate blocking time */
2250 { 2917 {
2251 ev_tstamp waittime = 0.; 2918 ev_tstamp waittime = 0.;
2252 ev_tstamp sleeptime = 0.; 2919 ev_tstamp sleeptime = 0.;
2253 2920
2921 /* remember old timestamp for io_blocktime calculation */
2922 ev_tstamp prev_mn_now = mn_now;
2923
2924 /* update time to cancel out callback processing overhead */
2925 time_update (EV_A_ 1e100);
2926
2927 /* from now on, we want a pipe-wake-up */
2928 pipe_write_wanted = 1;
2929
2930 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2931
2254 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2932 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2255 { 2933 {
2256 /* remember old timestamp for io_blocktime calculation */
2257 ev_tstamp prev_mn_now = mn_now;
2258
2259 /* update time to cancel out callback processing overhead */
2260 time_update (EV_A_ 1e100);
2261
2262 waittime = MAX_BLOCKTIME; 2934 waittime = MAX_BLOCKTIME;
2263 2935
2264 if (timercnt) 2936 if (timercnt)
2265 { 2937 {
2266 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2938 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2267 if (waittime > to) waittime = to; 2939 if (waittime > to) waittime = to;
2268 } 2940 }
2269 2941
2270#if EV_PERIODIC_ENABLE 2942#if EV_PERIODIC_ENABLE
2271 if (periodiccnt) 2943 if (periodiccnt)
2272 { 2944 {
2273 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2945 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2274 if (waittime > to) waittime = to; 2946 if (waittime > to) waittime = to;
2275 } 2947 }
2276#endif 2948#endif
2277 2949
2278 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2950 /* don't let timeouts decrease the waittime below timeout_blocktime */
2279 if (expect_false (waittime < timeout_blocktime)) 2951 if (expect_false (waittime < timeout_blocktime))
2280 waittime = timeout_blocktime; 2952 waittime = timeout_blocktime;
2953
2954 /* at this point, we NEED to wait, so we have to ensure */
2955 /* to pass a minimum nonzero value to the backend */
2956 if (expect_false (waittime < backend_mintime))
2957 waittime = backend_mintime;
2281 2958
2282 /* extra check because io_blocktime is commonly 0 */ 2959 /* extra check because io_blocktime is commonly 0 */
2283 if (expect_false (io_blocktime)) 2960 if (expect_false (io_blocktime))
2284 { 2961 {
2285 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2962 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2286 2963
2287 if (sleeptime > waittime - backend_fudge) 2964 if (sleeptime > waittime - backend_mintime)
2288 sleeptime = waittime - backend_fudge; 2965 sleeptime = waittime - backend_mintime;
2289 2966
2290 if (expect_true (sleeptime > 0.)) 2967 if (expect_true (sleeptime > 0.))
2291 { 2968 {
2292 ev_sleep (sleeptime); 2969 ev_sleep (sleeptime);
2293 waittime -= sleeptime; 2970 waittime -= sleeptime;
2294 } 2971 }
2295 } 2972 }
2296 } 2973 }
2297 2974
2298#if EV_MINIMAL < 2 2975#if EV_FEATURE_API
2299 ++loop_count; 2976 ++loop_count;
2300#endif 2977#endif
2301 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 2978 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2302 backend_poll (EV_A_ waittime); 2979 backend_poll (EV_A_ waittime);
2303 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 2980 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2981
2982 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2983
2984 if (pipe_write_skipped)
2985 {
2986 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2987 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2988 }
2989
2304 2990
2305 /* update ev_rt_now, do magic */ 2991 /* update ev_rt_now, do magic */
2306 time_update (EV_A_ waittime + sleeptime); 2992 time_update (EV_A_ waittime + sleeptime);
2307 } 2993 }
2308 2994
… …
2315#if EV_IDLE_ENABLE 3001#if EV_IDLE_ENABLE
2316 /* queue idle watchers unless other events are pending */ 3002 /* queue idle watchers unless other events are pending */
2317 idle_reify (EV_A); 3003 idle_reify (EV_A);
2318#endif 3004#endif
2319 3005
3006#if EV_CHECK_ENABLE
2320 /* queue check watchers, to be executed first */ 3007 /* queue check watchers, to be executed first */
2321 if (expect_false (checkcnt)) 3008 if (expect_false (checkcnt))
2322 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3009 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3010#endif
2323 3011
2324 EV_INVOKE_PENDING; 3012 EV_INVOKE_PENDING;
2325 } 3013 }
2326 while (expect_true ( 3014 while (expect_true (
2327 activecnt 3015 activecnt
2328 && !loop_done 3016 && !loop_done
2329 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3017 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2330 )); 3018 ));
2331 3019
2332 if (loop_done == EVUNLOOP_ONE) 3020 if (loop_done == EVBREAK_ONE)
2333 loop_done = EVUNLOOP_CANCEL; 3021 loop_done = EVBREAK_CANCEL;
2334 3022
2335#if EV_MINIMAL < 2 3023#if EV_FEATURE_API
2336 --loop_depth; 3024 --loop_depth;
2337#endif 3025#endif
2338} 3026}
2339 3027
2340void 3028void
2341ev_unloop (EV_P_ int how) 3029ev_break (EV_P_ int how)
2342{ 3030{
2343 loop_done = how; 3031 loop_done = how;
2344} 3032}
2345 3033
2346void 3034void
… …
2393inline_size void 3081inline_size void
2394wlist_del (WL *head, WL elem) 3082wlist_del (WL *head, WL elem)
2395{ 3083{
2396 while (*head) 3084 while (*head)
2397 { 3085 {
2398 if (*head == elem) 3086 if (expect_true (*head == elem))
2399 { 3087 {
2400 *head = elem->next; 3088 *head = elem->next;
2401 return; 3089 break;
2402 } 3090 }
2403 3091
2404 head = &(*head)->next; 3092 head = &(*head)->next;
2405 } 3093 }
2406} 3094}
… …
2466 3154
2467 if (expect_false (ev_is_active (w))) 3155 if (expect_false (ev_is_active (w)))
2468 return; 3156 return;
2469 3157
2470 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3158 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2471 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3159 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2472 3160
2473 EV_FREQUENT_CHECK; 3161 EV_FREQUENT_CHECK;
2474 3162
2475 ev_start (EV_A_ (W)w, 1); 3163 ev_start (EV_A_ (W)w, 1);
2476 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3164 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2494 EV_FREQUENT_CHECK; 3182 EV_FREQUENT_CHECK;
2495 3183
2496 wlist_del (&anfds[w->fd].head, (WL)w); 3184 wlist_del (&anfds[w->fd].head, (WL)w);
2497 ev_stop (EV_A_ (W)w); 3185 ev_stop (EV_A_ (W)w);
2498 3186
2499 fd_change (EV_A_ w->fd, 1); 3187 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2500 3188
2501 EV_FREQUENT_CHECK; 3189 EV_FREQUENT_CHECK;
2502} 3190}
2503 3191
2504void noinline 3192void noinline
… …
2546 timers [active] = timers [timercnt + HEAP0]; 3234 timers [active] = timers [timercnt + HEAP0];
2547 adjustheap (timers, timercnt, active); 3235 adjustheap (timers, timercnt, active);
2548 } 3236 }
2549 } 3237 }
2550 3238
2551 EV_FREQUENT_CHECK;
2552
2553 ev_at (w) -= mn_now; 3239 ev_at (w) -= mn_now;
2554 3240
2555 ev_stop (EV_A_ (W)w); 3241 ev_stop (EV_A_ (W)w);
3242
3243 EV_FREQUENT_CHECK;
2556} 3244}
2557 3245
2558void noinline 3246void noinline
2559ev_timer_again (EV_P_ ev_timer *w) 3247ev_timer_again (EV_P_ ev_timer *w)
2560{ 3248{
… …
2596 if (w->reschedule_cb) 3284 if (w->reschedule_cb)
2597 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3285 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2598 else if (w->interval) 3286 else if (w->interval)
2599 { 3287 {
2600 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3288 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2601 /* this formula differs from the one in periodic_reify because we do not always round up */ 3289 periodic_recalc (EV_A_ w);
2602 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2603 } 3290 }
2604 else 3291 else
2605 ev_at (w) = w->offset; 3292 ev_at (w) = w->offset;
2606 3293
2607 EV_FREQUENT_CHECK; 3294 EV_FREQUENT_CHECK;
… …
2639 periodics [active] = periodics [periodiccnt + HEAP0]; 3326 periodics [active] = periodics [periodiccnt + HEAP0];
2640 adjustheap (periodics, periodiccnt, active); 3327 adjustheap (periodics, periodiccnt, active);
2641 } 3328 }
2642 } 3329 }
2643 3330
2644 EV_FREQUENT_CHECK;
2645
2646 ev_stop (EV_A_ (W)w); 3331 ev_stop (EV_A_ (W)w);
3332
3333 EV_FREQUENT_CHECK;
2647} 3334}
2648 3335
2649void noinline 3336void noinline
2650ev_periodic_again (EV_P_ ev_periodic *w) 3337ev_periodic_again (EV_P_ ev_periodic *w)
2651{ 3338{
… …
2657 3344
2658#ifndef SA_RESTART 3345#ifndef SA_RESTART
2659# define SA_RESTART 0 3346# define SA_RESTART 0
2660#endif 3347#endif
2661 3348
3349#if EV_SIGNAL_ENABLE
3350
2662void noinline 3351void noinline
2663ev_signal_start (EV_P_ ev_signal *w) 3352ev_signal_start (EV_P_ ev_signal *w)
2664{ 3353{
2665 if (expect_false (ev_is_active (w))) 3354 if (expect_false (ev_is_active (w)))
2666 return; 3355 return;
2667 3356
2668 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3357 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2669 3358
2670#if EV_MULTIPLICITY 3359#if EV_MULTIPLICITY
2671 assert (("libev: tried to attach to a signal from two different loops", 3360 assert (("libev: a signal must not be attached to two different loops",
2672 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3361 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2673 3362
2674 signals [w->signum - 1].loop = EV_A; 3363 signals [w->signum - 1].loop = EV_A;
2675#endif 3364#endif
2676 3365
… …
2712 if (!((WL)w)->next) 3401 if (!((WL)w)->next)
2713# if EV_USE_SIGNALFD 3402# if EV_USE_SIGNALFD
2714 if (sigfd < 0) /*TODO*/ 3403 if (sigfd < 0) /*TODO*/
2715# endif 3404# endif
2716 { 3405 {
2717# if _WIN32 3406# ifdef _WIN32
3407 evpipe_init (EV_A);
3408
2718 signal (w->signum, ev_sighandler); 3409 signal (w->signum, ev_sighandler);
2719# else 3410# else
2720 struct sigaction sa; 3411 struct sigaction sa;
2721 3412
2722 evpipe_init (EV_A); 3413 evpipe_init (EV_A);
… …
2724 sa.sa_handler = ev_sighandler; 3415 sa.sa_handler = ev_sighandler;
2725 sigfillset (&sa.sa_mask); 3416 sigfillset (&sa.sa_mask);
2726 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3417 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2727 sigaction (w->signum, &sa, 0); 3418 sigaction (w->signum, &sa, 0);
2728 3419
3420 if (origflags & EVFLAG_NOSIGMASK)
3421 {
2729 sigemptyset (&sa.sa_mask); 3422 sigemptyset (&sa.sa_mask);
2730 sigaddset (&sa.sa_mask, w->signum); 3423 sigaddset (&sa.sa_mask, w->signum);
2731 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3424 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3425 }
2732#endif 3426#endif
2733 } 3427 }
2734 3428
2735 EV_FREQUENT_CHECK; 3429 EV_FREQUENT_CHECK;
2736} 3430}
… …
2747 wlist_del (&signals [w->signum - 1].head, (WL)w); 3441 wlist_del (&signals [w->signum - 1].head, (WL)w);
2748 ev_stop (EV_A_ (W)w); 3442 ev_stop (EV_A_ (W)w);
2749 3443
2750 if (!signals [w->signum - 1].head) 3444 if (!signals [w->signum - 1].head)
2751 { 3445 {
2752 #if EV_MULTIPLICITY 3446#if EV_MULTIPLICITY
2753 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3447 signals [w->signum - 1].loop = 0; /* unattach from signal */
2754 #endif 3448#endif
2755 #if EV_USE_SIGNALFD 3449#if EV_USE_SIGNALFD
2756 if (sigfd >= 0) 3450 if (sigfd >= 0)
2757 { 3451 {
2758 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3452 sigset_t ss;
3453
3454 sigemptyset (&ss);
3455 sigaddset (&ss, w->signum);
2759 sigdelset (&sigfd_set, w->signum); 3456 sigdelset (&sigfd_set, w->signum);
3457
2760 signalfd (sigfd, &sigfd_set, 0); 3458 signalfd (sigfd, &sigfd_set, 0);
2761 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3459 sigprocmask (SIG_UNBLOCK, &ss, 0);
2762 /*TODO: maybe unblock signal? */
2763 } 3460 }
2764 else 3461 else
2765 #endif 3462#endif
2766 signal (w->signum, SIG_DFL); 3463 signal (w->signum, SIG_DFL);
2767 } 3464 }
2768 3465
2769 EV_FREQUENT_CHECK; 3466 EV_FREQUENT_CHECK;
2770} 3467}
3468
3469#endif
3470
3471#if EV_CHILD_ENABLE
2771 3472
2772void 3473void
2773ev_child_start (EV_P_ ev_child *w) 3474ev_child_start (EV_P_ ev_child *w)
2774{ 3475{
2775#if EV_MULTIPLICITY 3476#if EV_MULTIPLICITY
… …
2779 return; 3480 return;
2780 3481
2781 EV_FREQUENT_CHECK; 3482 EV_FREQUENT_CHECK;
2782 3483
2783 ev_start (EV_A_ (W)w, 1); 3484 ev_start (EV_A_ (W)w, 1);
2784 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3485 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2785 3486
2786 EV_FREQUENT_CHECK; 3487 EV_FREQUENT_CHECK;
2787} 3488}
2788 3489
2789void 3490void
… …
2793 if (expect_false (!ev_is_active (w))) 3494 if (expect_false (!ev_is_active (w)))
2794 return; 3495 return;
2795 3496
2796 EV_FREQUENT_CHECK; 3497 EV_FREQUENT_CHECK;
2797 3498
2798 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3499 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2799 ev_stop (EV_A_ (W)w); 3500 ev_stop (EV_A_ (W)w);
2800 3501
2801 EV_FREQUENT_CHECK; 3502 EV_FREQUENT_CHECK;
2802} 3503}
3504
3505#endif
2803 3506
2804#if EV_STAT_ENABLE 3507#if EV_STAT_ENABLE
2805 3508
2806# ifdef _WIN32 3509# ifdef _WIN32
2807# undef lstat 3510# undef lstat
… …
2813#define MIN_STAT_INTERVAL 0.1074891 3516#define MIN_STAT_INTERVAL 0.1074891
2814 3517
2815static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3518static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2816 3519
2817#if EV_USE_INOTIFY 3520#if EV_USE_INOTIFY
2818# define EV_INOTIFY_BUFSIZE 8192 3521
3522/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3523# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2819 3524
2820static void noinline 3525static void noinline
2821infy_add (EV_P_ ev_stat *w) 3526infy_add (EV_P_ ev_stat *w)
2822{ 3527{
2823 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); 3528 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);
2824 3529
2825 if (w->wd < 0) 3530 if (w->wd >= 0)
3531 {
3532 struct statfs sfs;
3533
3534 /* now local changes will be tracked by inotify, but remote changes won't */
3535 /* unless the filesystem is known to be local, we therefore still poll */
3536 /* also do poll on <2.6.25, but with normal frequency */
3537
3538 if (!fs_2625)
3539 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3540 else if (!statfs (w->path, &sfs)
3541 && (sfs.f_type == 0x1373 /* devfs */
3542 || sfs.f_type == 0xEF53 /* ext2/3 */
3543 || sfs.f_type == 0x3153464a /* jfs */
3544 || sfs.f_type == 0x52654973 /* reiser3 */
3545 || sfs.f_type == 0x01021994 /* tempfs */
3546 || sfs.f_type == 0x58465342 /* xfs */))
3547 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3548 else
3549 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2826 { 3550 }
3551 else
3552 {
3553 /* can't use inotify, continue to stat */
2827 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3554 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2828 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2829 3555
2830 /* monitor some parent directory for speedup hints */ 3556 /* if path is not there, monitor some parent directory for speedup hints */
2831 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3557 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2832 /* but an efficiency issue only */ 3558 /* but an efficiency issue only */
2833 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3559 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2834 { 3560 {
2835 char path [4096]; 3561 char path [4096];
… …
2845 if (!pend || pend == path) 3571 if (!pend || pend == path)
2846 break; 3572 break;
2847 3573
2848 *pend = 0; 3574 *pend = 0;
2849 w->wd = inotify_add_watch (fs_fd, path, mask); 3575 w->wd = inotify_add_watch (fs_fd, path, mask);
2850 } 3576 }
2851 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3577 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2852 } 3578 }
2853 } 3579 }
2854 3580
2855 if (w->wd >= 0) 3581 if (w->wd >= 0)
2856 {
2857 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3582 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2858 3583
2859 /* now local changes will be tracked by inotify, but remote changes won't */ 3584 /* now re-arm timer, if required */
2860 /* unless the filesystem it known to be local, we therefore still poll */ 3585 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2861 /* also do poll on <2.6.25, but with normal frequency */
2862 struct statfs sfs;
2863
2864 if (fs_2625 && !statfs (w->path, &sfs))
2865 if (sfs.f_type == 0x1373 /* devfs */
2866 || sfs.f_type == 0xEF53 /* ext2/3 */
2867 || sfs.f_type == 0x3153464a /* jfs */
2868 || sfs.f_type == 0x52654973 /* reiser3 */
2869 || sfs.f_type == 0x01021994 /* tempfs */
2870 || sfs.f_type == 0x58465342 /* xfs */)
2871 return;
2872
2873 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2874 ev_timer_again (EV_A_ &w->timer); 3586 ev_timer_again (EV_A_ &w->timer);
2875 } 3587 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2876} 3588}
2877 3589
2878static void noinline 3590static void noinline
2879infy_del (EV_P_ ev_stat *w) 3591infy_del (EV_P_ ev_stat *w)
2880{ 3592{
… …
2883 3595
2884 if (wd < 0) 3596 if (wd < 0)
2885 return; 3597 return;
2886 3598
2887 w->wd = -2; 3599 w->wd = -2;
2888 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3600 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2889 wlist_del (&fs_hash [slot].head, (WL)w); 3601 wlist_del (&fs_hash [slot].head, (WL)w);
2890 3602
2891 /* remove this watcher, if others are watching it, they will rearm */ 3603 /* remove this watcher, if others are watching it, they will rearm */
2892 inotify_rm_watch (fs_fd, wd); 3604 inotify_rm_watch (fs_fd, wd);
2893} 3605}
… …
2895static void noinline 3607static void noinline
2896infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3608infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2897{ 3609{
2898 if (slot < 0) 3610 if (slot < 0)
2899 /* overflow, need to check for all hash slots */ 3611 /* overflow, need to check for all hash slots */
2900 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3612 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2901 infy_wd (EV_A_ slot, wd, ev); 3613 infy_wd (EV_A_ slot, wd, ev);
2902 else 3614 else
2903 { 3615 {
2904 WL w_; 3616 WL w_;
2905 3617
2906 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3618 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2907 { 3619 {
2908 ev_stat *w = (ev_stat *)w_; 3620 ev_stat *w = (ev_stat *)w_;
2909 w_ = w_->next; /* lets us remove this watcher and all before it */ 3621 w_ = w_->next; /* lets us remove this watcher and all before it */
2910 3622
2911 if (w->wd == wd || wd == -1) 3623 if (w->wd == wd || wd == -1)
2912 { 3624 {
2913 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3625 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2914 { 3626 {
2915 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3627 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2916 w->wd = -1; 3628 w->wd = -1;
2917 infy_add (EV_A_ w); /* re-add, no matter what */ 3629 infy_add (EV_A_ w); /* re-add, no matter what */
2918 } 3630 }
2919 3631
2920 stat_timer_cb (EV_A_ &w->timer, 0); 3632 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2925 3637
2926static void 3638static void
2927infy_cb (EV_P_ ev_io *w, int revents) 3639infy_cb (EV_P_ ev_io *w, int revents)
2928{ 3640{
2929 char buf [EV_INOTIFY_BUFSIZE]; 3641 char buf [EV_INOTIFY_BUFSIZE];
2930 struct inotify_event *ev = (struct inotify_event *)buf;
2931 int ofs; 3642 int ofs;
2932 int len = read (fs_fd, buf, sizeof (buf)); 3643 int len = read (fs_fd, buf, sizeof (buf));
2933 3644
2934 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3645 for (ofs = 0; ofs < len; )
3646 {
3647 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2935 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3648 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3649 ofs += sizeof (struct inotify_event) + ev->len;
3650 }
2936} 3651}
2937 3652
2938inline_size void 3653inline_size void ecb_cold
2939check_2625 (EV_P) 3654ev_check_2625 (EV_P)
2940{ 3655{
2941 /* kernels < 2.6.25 are borked 3656 /* kernels < 2.6.25 are borked
2942 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3657 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2943 */ 3658 */
2944 struct utsname buf; 3659 if (ev_linux_version () < 0x020619)
2945 int major, minor, micro;
2946
2947 if (uname (&buf))
2948 return; 3660 return;
2949 3661
2950 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2951 return;
2952
2953 if (major < 2
2954 || (major == 2 && minor < 6)
2955 || (major == 2 && minor == 6 && micro < 25))
2956 return;
2957
2958 fs_2625 = 1; 3662 fs_2625 = 1;
3663}
3664
3665inline_size int
3666infy_newfd (void)
3667{
3668#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3669 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3670 if (fd >= 0)
3671 return fd;
3672#endif
3673 return inotify_init ();
2959} 3674}
2960 3675
2961inline_size void 3676inline_size void
2962infy_init (EV_P) 3677infy_init (EV_P)
2963{ 3678{
2964 if (fs_fd != -2) 3679 if (fs_fd != -2)
2965 return; 3680 return;
2966 3681
2967 fs_fd = -1; 3682 fs_fd = -1;
2968 3683
2969 check_2625 (EV_A); 3684 ev_check_2625 (EV_A);
2970 3685
2971 fs_fd = inotify_init (); 3686 fs_fd = infy_newfd ();
2972 3687
2973 if (fs_fd >= 0) 3688 if (fs_fd >= 0)
2974 { 3689 {
3690 fd_intern (fs_fd);
2975 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3691 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2976 ev_set_priority (&fs_w, EV_MAXPRI); 3692 ev_set_priority (&fs_w, EV_MAXPRI);
2977 ev_io_start (EV_A_ &fs_w); 3693 ev_io_start (EV_A_ &fs_w);
3694 ev_unref (EV_A);
2978 } 3695 }
2979} 3696}
2980 3697
2981inline_size void 3698inline_size void
2982infy_fork (EV_P) 3699infy_fork (EV_P)
… …
2984 int slot; 3701 int slot;
2985 3702
2986 if (fs_fd < 0) 3703 if (fs_fd < 0)
2987 return; 3704 return;
2988 3705
3706 ev_ref (EV_A);
3707 ev_io_stop (EV_A_ &fs_w);
2989 close (fs_fd); 3708 close (fs_fd);
2990 fs_fd = inotify_init (); 3709 fs_fd = infy_newfd ();
2991 3710
3711 if (fs_fd >= 0)
3712 {
3713 fd_intern (fs_fd);
3714 ev_io_set (&fs_w, fs_fd, EV_READ);
3715 ev_io_start (EV_A_ &fs_w);
3716 ev_unref (EV_A);
3717 }
3718
2992 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3719 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2993 { 3720 {
2994 WL w_ = fs_hash [slot].head; 3721 WL w_ = fs_hash [slot].head;
2995 fs_hash [slot].head = 0; 3722 fs_hash [slot].head = 0;
2996 3723
2997 while (w_) 3724 while (w_)
… …
3002 w->wd = -1; 3729 w->wd = -1;
3003 3730
3004 if (fs_fd >= 0) 3731 if (fs_fd >= 0)
3005 infy_add (EV_A_ w); /* re-add, no matter what */ 3732 infy_add (EV_A_ w); /* re-add, no matter what */
3006 else 3733 else
3734 {
3735 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3736 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3007 ev_timer_again (EV_A_ &w->timer); 3737 ev_timer_again (EV_A_ &w->timer);
3738 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3739 }
3008 } 3740 }
3009 } 3741 }
3010} 3742}
3011 3743
3012#endif 3744#endif
… …
3029static void noinline 3761static void noinline
3030stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3762stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3031{ 3763{
3032 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3764 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3033 3765
3034 /* we copy this here each the time so that */ 3766 ev_statdata prev = w->attr;
3035 /* prev has the old value when the callback gets invoked */
3036 w->prev = w->attr;
3037 ev_stat_stat (EV_A_ w); 3767 ev_stat_stat (EV_A_ w);
3038 3768
3039 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3769 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3040 if ( 3770 if (
3041 w->prev.st_dev != w->attr.st_dev 3771 prev.st_dev != w->attr.st_dev
3042 || w->prev.st_ino != w->attr.st_ino 3772 || prev.st_ino != w->attr.st_ino
3043 || w->prev.st_mode != w->attr.st_mode 3773 || prev.st_mode != w->attr.st_mode
3044 || w->prev.st_nlink != w->attr.st_nlink 3774 || prev.st_nlink != w->attr.st_nlink
3045 || w->prev.st_uid != w->attr.st_uid 3775 || prev.st_uid != w->attr.st_uid
3046 || w->prev.st_gid != w->attr.st_gid 3776 || prev.st_gid != w->attr.st_gid
3047 || w->prev.st_rdev != w->attr.st_rdev 3777 || prev.st_rdev != w->attr.st_rdev
3048 || w->prev.st_size != w->attr.st_size 3778 || prev.st_size != w->attr.st_size
3049 || w->prev.st_atime != w->attr.st_atime 3779 || prev.st_atime != w->attr.st_atime
3050 || w->prev.st_mtime != w->attr.st_mtime 3780 || prev.st_mtime != w->attr.st_mtime
3051 || w->prev.st_ctime != w->attr.st_ctime 3781 || prev.st_ctime != w->attr.st_ctime
3052 ) { 3782 ) {
3783 /* we only update w->prev on actual differences */
3784 /* in case we test more often than invoke the callback, */
3785 /* to ensure that prev is always different to attr */
3786 w->prev = prev;
3787
3053 #if EV_USE_INOTIFY 3788 #if EV_USE_INOTIFY
3054 if (fs_fd >= 0) 3789 if (fs_fd >= 0)
3055 { 3790 {
3056 infy_del (EV_A_ w); 3791 infy_del (EV_A_ w);
3057 infy_add (EV_A_ w); 3792 infy_add (EV_A_ w);
… …
3082 3817
3083 if (fs_fd >= 0) 3818 if (fs_fd >= 0)
3084 infy_add (EV_A_ w); 3819 infy_add (EV_A_ w);
3085 else 3820 else
3086#endif 3821#endif
3822 {
3087 ev_timer_again (EV_A_ &w->timer); 3823 ev_timer_again (EV_A_ &w->timer);
3824 ev_unref (EV_A);
3825 }
3088 3826
3089 ev_start (EV_A_ (W)w, 1); 3827 ev_start (EV_A_ (W)w, 1);
3090 3828
3091 EV_FREQUENT_CHECK; 3829 EV_FREQUENT_CHECK;
3092} 3830}
… …
3101 EV_FREQUENT_CHECK; 3839 EV_FREQUENT_CHECK;
3102 3840
3103#if EV_USE_INOTIFY 3841#if EV_USE_INOTIFY
3104 infy_del (EV_A_ w); 3842 infy_del (EV_A_ w);
3105#endif 3843#endif
3844
3845 if (ev_is_active (&w->timer))
3846 {
3847 ev_ref (EV_A);
3106 ev_timer_stop (EV_A_ &w->timer); 3848 ev_timer_stop (EV_A_ &w->timer);
3849 }
3107 3850
3108 ev_stop (EV_A_ (W)w); 3851 ev_stop (EV_A_ (W)w);
3109 3852
3110 EV_FREQUENT_CHECK; 3853 EV_FREQUENT_CHECK;
3111} 3854}
… …
3156 3899
3157 EV_FREQUENT_CHECK; 3900 EV_FREQUENT_CHECK;
3158} 3901}
3159#endif 3902#endif
3160 3903
3904#if EV_PREPARE_ENABLE
3161void 3905void
3162ev_prepare_start (EV_P_ ev_prepare *w) 3906ev_prepare_start (EV_P_ ev_prepare *w)
3163{ 3907{
3164 if (expect_false (ev_is_active (w))) 3908 if (expect_false (ev_is_active (w)))
3165 return; 3909 return;
… …
3191 3935
3192 ev_stop (EV_A_ (W)w); 3936 ev_stop (EV_A_ (W)w);
3193 3937
3194 EV_FREQUENT_CHECK; 3938 EV_FREQUENT_CHECK;
3195} 3939}
3940#endif
3196 3941
3942#if EV_CHECK_ENABLE
3197void 3943void
3198ev_check_start (EV_P_ ev_check *w) 3944ev_check_start (EV_P_ ev_check *w)
3199{ 3945{
3200 if (expect_false (ev_is_active (w))) 3946 if (expect_false (ev_is_active (w)))
3201 return; 3947 return;
… …
3227 3973
3228 ev_stop (EV_A_ (W)w); 3974 ev_stop (EV_A_ (W)w);
3229 3975
3230 EV_FREQUENT_CHECK; 3976 EV_FREQUENT_CHECK;
3231} 3977}
3978#endif
3232 3979
3233#if EV_EMBED_ENABLE 3980#if EV_EMBED_ENABLE
3234void noinline 3981void noinline
3235ev_embed_sweep (EV_P_ ev_embed *w) 3982ev_embed_sweep (EV_P_ ev_embed *w)
3236{ 3983{
3237 ev_loop (w->other, EVLOOP_NONBLOCK); 3984 ev_run (w->other, EVRUN_NOWAIT);
3238} 3985}
3239 3986
3240static void 3987static void
3241embed_io_cb (EV_P_ ev_io *io, int revents) 3988embed_io_cb (EV_P_ ev_io *io, int revents)
3242{ 3989{
3243 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3990 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3244 3991
3245 if (ev_cb (w)) 3992 if (ev_cb (w))
3246 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3993 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3247 else 3994 else
3248 ev_loop (w->other, EVLOOP_NONBLOCK); 3995 ev_run (w->other, EVRUN_NOWAIT);
3249} 3996}
3250 3997
3251static void 3998static void
3252embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3999embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3253{ 4000{
… …
3257 EV_P = w->other; 4004 EV_P = w->other;
3258 4005
3259 while (fdchangecnt) 4006 while (fdchangecnt)
3260 { 4007 {
3261 fd_reify (EV_A); 4008 fd_reify (EV_A);
3262 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4009 ev_run (EV_A_ EVRUN_NOWAIT);
3263 } 4010 }
3264 } 4011 }
3265} 4012}
3266 4013
3267static void 4014static void
… …
3273 4020
3274 { 4021 {
3275 EV_P = w->other; 4022 EV_P = w->other;
3276 4023
3277 ev_loop_fork (EV_A); 4024 ev_loop_fork (EV_A);
3278 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4025 ev_run (EV_A_ EVRUN_NOWAIT);
3279 } 4026 }
3280 4027
3281 ev_embed_start (EV_A_ w); 4028 ev_embed_start (EV_A_ w);
3282} 4029}
3283 4030
… …
3331 4078
3332 ev_io_stop (EV_A_ &w->io); 4079 ev_io_stop (EV_A_ &w->io);
3333 ev_prepare_stop (EV_A_ &w->prepare); 4080 ev_prepare_stop (EV_A_ &w->prepare);
3334 ev_fork_stop (EV_A_ &w->fork); 4081 ev_fork_stop (EV_A_ &w->fork);
3335 4082
4083 ev_stop (EV_A_ (W)w);
4084
3336 EV_FREQUENT_CHECK; 4085 EV_FREQUENT_CHECK;
3337} 4086}
3338#endif 4087#endif
3339 4088
3340#if EV_FORK_ENABLE 4089#if EV_FORK_ENABLE
… …
3373 4122
3374 EV_FREQUENT_CHECK; 4123 EV_FREQUENT_CHECK;
3375} 4124}
3376#endif 4125#endif
3377 4126
4127#if EV_CLEANUP_ENABLE
4128void
4129ev_cleanup_start (EV_P_ ev_cleanup *w)
4130{
4131 if (expect_false (ev_is_active (w)))
4132 return;
4133
4134 EV_FREQUENT_CHECK;
4135
4136 ev_start (EV_A_ (W)w, ++cleanupcnt);
4137 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4138 cleanups [cleanupcnt - 1] = w;
4139
4140 /* cleanup watchers should never keep a refcount on the loop */
4141 ev_unref (EV_A);
4142 EV_FREQUENT_CHECK;
4143}
4144
4145void
4146ev_cleanup_stop (EV_P_ ev_cleanup *w)
4147{
4148 clear_pending (EV_A_ (W)w);
4149 if (expect_false (!ev_is_active (w)))
4150 return;
4151
4152 EV_FREQUENT_CHECK;
4153 ev_ref (EV_A);
4154
4155 {
4156 int active = ev_active (w);
4157
4158 cleanups [active - 1] = cleanups [--cleanupcnt];
4159 ev_active (cleanups [active - 1]) = active;
4160 }
4161
4162 ev_stop (EV_A_ (W)w);
4163
4164 EV_FREQUENT_CHECK;
4165}
4166#endif
4167
3378#if EV_ASYNC_ENABLE 4168#if EV_ASYNC_ENABLE
3379void 4169void
3380ev_async_start (EV_P_ ev_async *w) 4170ev_async_start (EV_P_ ev_async *w)
3381{ 4171{
3382 if (expect_false (ev_is_active (w))) 4172 if (expect_false (ev_is_active (w)))
3383 return; 4173 return;
3384 4174
4175 w->sent = 0;
4176
3385 evpipe_init (EV_A); 4177 evpipe_init (EV_A);
3386 4178
3387 EV_FREQUENT_CHECK; 4179 EV_FREQUENT_CHECK;
3388 4180
3389 ev_start (EV_A_ (W)w, ++asynccnt); 4181 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3416 4208
3417void 4209void
3418ev_async_send (EV_P_ ev_async *w) 4210ev_async_send (EV_P_ ev_async *w)
3419{ 4211{
3420 w->sent = 1; 4212 w->sent = 1;
3421 evpipe_write (EV_A_ &gotasync); 4213 evpipe_write (EV_A_ &async_pending);
3422} 4214}
3423#endif 4215#endif
3424 4216
3425/*****************************************************************************/ 4217/*****************************************************************************/
3426 4218
… …
3466{ 4258{
3467 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4259 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3468 4260
3469 if (expect_false (!once)) 4261 if (expect_false (!once))
3470 { 4262 {
3471 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4263 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3472 return; 4264 return;
3473 } 4265 }
3474 4266
3475 once->cb = cb; 4267 once->cb = cb;
3476 once->arg = arg; 4268 once->arg = arg;
… …
3491} 4283}
3492 4284
3493/*****************************************************************************/ 4285/*****************************************************************************/
3494 4286
3495#if EV_WALK_ENABLE 4287#if EV_WALK_ENABLE
3496void 4288void ecb_cold
3497ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4289ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3498{ 4290{
3499 int i, j; 4291 int i, j;
3500 ev_watcher_list *wl, *wn; 4292 ev_watcher_list *wl, *wn;
3501 4293
… …
3545 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4337 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3546#endif 4338#endif
3547 4339
3548#if EV_IDLE_ENABLE 4340#if EV_IDLE_ENABLE
3549 if (types & EV_IDLE) 4341 if (types & EV_IDLE)
3550 for (j = NUMPRI; i--; ) 4342 for (j = NUMPRI; j--; )
3551 for (i = idlecnt [j]; i--; ) 4343 for (i = idlecnt [j]; i--; )
3552 cb (EV_A_ EV_IDLE, idles [j][i]); 4344 cb (EV_A_ EV_IDLE, idles [j][i]);
3553#endif 4345#endif
3554 4346
3555#if EV_FORK_ENABLE 4347#if EV_FORK_ENABLE
… …
3563 if (types & EV_ASYNC) 4355 if (types & EV_ASYNC)
3564 for (i = asynccnt; i--; ) 4356 for (i = asynccnt; i--; )
3565 cb (EV_A_ EV_ASYNC, asyncs [i]); 4357 cb (EV_A_ EV_ASYNC, asyncs [i]);
3566#endif 4358#endif
3567 4359
4360#if EV_PREPARE_ENABLE
3568 if (types & EV_PREPARE) 4361 if (types & EV_PREPARE)
3569 for (i = preparecnt; i--; ) 4362 for (i = preparecnt; i--; )
3570#if EV_EMBED_ENABLE 4363# if EV_EMBED_ENABLE
3571 if (ev_cb (prepares [i]) != embed_prepare_cb) 4364 if (ev_cb (prepares [i]) != embed_prepare_cb)
3572#endif 4365# endif
3573 cb (EV_A_ EV_PREPARE, prepares [i]); 4366 cb (EV_A_ EV_PREPARE, prepares [i]);
4367#endif
3574 4368
4369#if EV_CHECK_ENABLE
3575 if (types & EV_CHECK) 4370 if (types & EV_CHECK)
3576 for (i = checkcnt; i--; ) 4371 for (i = checkcnt; i--; )
3577 cb (EV_A_ EV_CHECK, checks [i]); 4372 cb (EV_A_ EV_CHECK, checks [i]);
4373#endif
3578 4374
4375#if EV_SIGNAL_ENABLE
3579 if (types & EV_SIGNAL) 4376 if (types & EV_SIGNAL)
3580 for (i = 0; i < EV_NSIG - 1; ++i) 4377 for (i = 0; i < EV_NSIG - 1; ++i)
3581 for (wl = signals [i].head; wl; ) 4378 for (wl = signals [i].head; wl; )
3582 { 4379 {
3583 wn = wl->next; 4380 wn = wl->next;
3584 cb (EV_A_ EV_SIGNAL, wl); 4381 cb (EV_A_ EV_SIGNAL, wl);
3585 wl = wn; 4382 wl = wn;
3586 } 4383 }
4384#endif
3587 4385
4386#if EV_CHILD_ENABLE
3588 if (types & EV_CHILD) 4387 if (types & EV_CHILD)
3589 for (i = EV_PID_HASHSIZE; i--; ) 4388 for (i = (EV_PID_HASHSIZE); i--; )
3590 for (wl = childs [i]; wl; ) 4389 for (wl = childs [i]; wl; )
3591 { 4390 {
3592 wn = wl->next; 4391 wn = wl->next;
3593 cb (EV_A_ EV_CHILD, wl); 4392 cb (EV_A_ EV_CHILD, wl);
3594 wl = wn; 4393 wl = wn;
3595 } 4394 }
4395#endif
3596/* EV_STAT 0x00001000 /* stat data changed */ 4396/* EV_STAT 0x00001000 /* stat data changed */
3597/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4397/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3598} 4398}
3599#endif 4399#endif
3600 4400
3601#if EV_MULTIPLICITY 4401#if EV_MULTIPLICITY
3602 #include "ev_wrap.h" 4402 #include "ev_wrap.h"
3603#endif 4403#endif
3604 4404
3605#ifdef __cplusplus 4405EV_CPP(})
3606}
3607#endif
3608 4406

Diff Legend

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