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Comparing libev/ev.c (file contents):
Revision 1.314 by root, Wed Aug 26 17:31:20 2009 UTC vs.
Revision 1.381 by root, Mon Jun 27 21:29:35 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1 148# ifndef EV_USE_SIGNALFD
141# else
142# define EV_USE_SIGNALFD 0 149# define EV_USE_SIGNALFD EV_FEATURE_OS
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h>
157#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
158#include <fcntl.h> 169#include <fcntl.h>
159#include <stddef.h> 170#include <stddef.h>
160 171
161#include <stdio.h> 172#include <stdio.h>
162 173
163#include <assert.h> 174#include <assert.h>
164#include <errno.h> 175#include <errno.h>
165#include <sys/types.h> 176#include <sys/types.h>
166#include <time.h> 177#include <time.h>
178#include <limits.h>
167 179
168#include <signal.h> 180#include <signal.h>
169 181
170#ifdef EV_H 182#ifdef EV_H
171# include EV_H 183# include EV_H
172#else 184#else
173# include "ev.h" 185# include "ev.h"
174#endif 186#endif
187
188EV_CPP(extern "C" {)
175 189
176#ifndef _WIN32 190#ifndef _WIN32
177# include <sys/time.h> 191# include <sys/time.h>
178# include <sys/wait.h> 192# include <sys/wait.h>
179# include <unistd.h> 193# include <unistd.h>
… …
182# define WIN32_LEAN_AND_MEAN 196# define WIN32_LEAN_AND_MEAN
183# include <windows.h> 197# include <windows.h>
184# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
185# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
186# endif 200# endif
201# undef EV_AVOID_STDIO
187#endif 202#endif
203
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
188 211
189/* this block tries to deduce configuration from header-defined symbols and defaults */ 212/* this block tries to deduce configuration from header-defined symbols and defaults */
190 213
191/* try to deduce the maximum number of signals on this platform */ 214/* try to deduce the maximum number of signals on this platform */
192#if defined (EV_NSIG) 215#if defined (EV_NSIG)
… …
204#elif defined (MAXSIG) 227#elif defined (MAXSIG)
205# define EV_NSIG (MAXSIG+1) 228# define EV_NSIG (MAXSIG+1)
206#elif defined (MAX_SIG) 229#elif defined (MAX_SIG)
207# define EV_NSIG (MAX_SIG+1) 230# define EV_NSIG (MAX_SIG+1)
208#elif defined (SIGARRAYSIZE) 231#elif defined (SIGARRAYSIZE)
209# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ 232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
210#elif defined (_sys_nsig) 233#elif defined (_sys_nsig)
211# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212#else 235#else
213# error "unable to find value for NSIG, please report" 236# error "unable to find value for NSIG, please report"
214/* to make it compile regardless, just remove the above line */ 237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
215# define EV_NSIG 65 239# define EV_NSIG 65
240#endif
241
242#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0
216#endif 244#endif
217 245
218#ifndef EV_USE_CLOCK_SYSCALL 246#ifndef EV_USE_CLOCK_SYSCALL
219# if __linux && __GLIBC__ >= 2 247# if __linux && __GLIBC__ >= 2
220# define EV_USE_CLOCK_SYSCALL 1 248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
221# else 249# else
222# define EV_USE_CLOCK_SYSCALL 0 250# define EV_USE_CLOCK_SYSCALL 0
223# endif 251# endif
224#endif 252#endif
225 253
226#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
227# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
228# define EV_USE_MONOTONIC 1 256# define EV_USE_MONOTONIC EV_FEATURE_OS
229# else 257# else
230# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
231# endif 259# endif
232#endif 260#endif
233 261
… …
235# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
236#endif 264#endif
237 265
238#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
239# if _POSIX_C_SOURCE >= 199309L 267# if _POSIX_C_SOURCE >= 199309L
240# define EV_USE_NANOSLEEP 1 268# define EV_USE_NANOSLEEP EV_FEATURE_OS
241# else 269# else
242# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
243# endif 271# endif
244#endif 272#endif
245 273
246#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
247# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
248#endif 276#endif
249 277
250#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
251# ifdef _WIN32 279# ifdef _WIN32
252# define EV_USE_POLL 0 280# define EV_USE_POLL 0
253# else 281# else
254# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
255# endif 283# endif
256#endif 284#endif
257 285
258#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
259# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
260# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
261# else 289# else
262# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
263# endif 291# endif
264#endif 292#endif
265 293
… …
271# define EV_USE_PORT 0 299# define EV_USE_PORT 0
272#endif 300#endif
273 301
274#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
275# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
276# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
277# else 305# else
278# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
279# endif 307# endif
280#endif 308#endif
281 309
282#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
283# if EV_MINIMAL 311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
284# define EV_PID_HASHSIZE 1
285# else
286# define EV_PID_HASHSIZE 16
287# endif
288#endif 312#endif
289 313
290#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
291# if EV_MINIMAL 315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
292# define EV_INOTIFY_HASHSIZE 1
293# else
294# define EV_INOTIFY_HASHSIZE 16
295# endif
296#endif 316#endif
297 317
298#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
299# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
300# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
301# else 321# else
302# define EV_USE_EVENTFD 0 322# define EV_USE_EVENTFD 0
303# endif 323# endif
304#endif 324#endif
305 325
306#ifndef EV_USE_SIGNALFD 326#ifndef EV_USE_SIGNALFD
307# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 327# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
308# define EV_USE_SIGNALFD 1 328# define EV_USE_SIGNALFD EV_FEATURE_OS
309# else 329# else
310# define EV_USE_SIGNALFD 0 330# define EV_USE_SIGNALFD 0
311# endif 331# endif
312#endif 332#endif
313 333
… …
316# define EV_USE_4HEAP 1 336# define EV_USE_4HEAP 1
317# define EV_HEAP_CACHE_AT 1 337# define EV_HEAP_CACHE_AT 1
318#endif 338#endif
319 339
320#ifndef EV_VERIFY 340#ifndef EV_VERIFY
321# define EV_VERIFY !EV_MINIMAL 341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
322#endif 342#endif
323 343
324#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
325# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
326#endif 346#endif
327 347
328#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
329# define EV_HEAP_CACHE_AT !EV_MINIMAL 349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
330#endif 350#endif
331 351
332/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
333/* which makes programs even slower. might work on other unices, too. */ 353/* which makes programs even slower. might work on other unices, too. */
334#if EV_USE_CLOCK_SYSCALL 354#if EV_USE_CLOCK_SYSCALL
… …
343# endif 363# endif
344#endif 364#endif
345 365
346/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 366/* this block fixes any misconfiguration where we know we run into trouble otherwise */
347 367
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
373
348#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
349# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
351#endif 377#endif
352 378
… …
359# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
360# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
361#endif 387#endif
362 388
363#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
364# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
365# include <sys/select.h> 392# include <sys/select.h>
366# endif 393# endif
367#endif 394#endif
368 395
369#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
370# include <sys/utsname.h>
371# include <sys/statfs.h> 397# include <sys/statfs.h>
372# include <sys/inotify.h> 398# include <sys/inotify.h>
373/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
374# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
375# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
… …
392# define EFD_CLOEXEC O_CLOEXEC 418# define EFD_CLOEXEC O_CLOEXEC
393# else 419# else
394# define EFD_CLOEXEC 02000000 420# define EFD_CLOEXEC 02000000
395# endif 421# endif
396# endif 422# endif
397# ifdef __cplusplus
398extern "C" {
399# endif
400int eventfd (unsigned int initval, int flags); 423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
401# ifdef __cplusplus
402}
403# endif
404#endif 424#endif
405 425
406#if EV_USE_SIGNALFD 426#if EV_USE_SIGNALFD
407/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
408# include <stdint.h> 428# include <stdint.h>
… …
414# define SFD_CLOEXEC O_CLOEXEC 434# define SFD_CLOEXEC O_CLOEXEC
415# else 435# else
416# define SFD_CLOEXEC 02000000 436# define SFD_CLOEXEC 02000000
417# endif 437# endif
418# endif 438# endif
419# ifdef __cplusplus
420extern "C" {
421# endif
422int signalfd (int fd, const sigset_t *mask, int flags); 439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
423 440
424struct signalfd_siginfo 441struct signalfd_siginfo
425{ 442{
426 uint32_t ssi_signo; 443 uint32_t ssi_signo;
427 char pad[128 - sizeof (uint32_t)]; 444 char pad[128 - sizeof (uint32_t)];
428}; 445};
429# ifdef __cplusplus
430}
431# endif 446#endif
432#endif
433
434 447
435/**/ 448/**/
436 449
437#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
438# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
439#else 452#else
440# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
441#endif 454#endif
442 455
443/* 456/*
444 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
445 * It is added to ev_rt_now when scheduling periodics
446 * to ensure progress, time-wise, even when rounding
447 * errors are against us.
448 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
449 * Better solutions welcome.
450 */ 459 */
451#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
452 462
453#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
454#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
455/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
456 465
457#if __GNUC__ >= 4 466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
458# define expect(expr,value) __builtin_expect ((expr),(value)) 467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
459# define noinline __attribute__ ((noinline)) 468
469/* the following are taken from libecb */
470/* ecb.h start */
471
472/* many compilers define _GNUC_ to some versions but then only implement
473 * what their idiot authors think are the "more important" extensions,
474 * causing enourmous grief in return for some better fake benchmark numbers.
475 * or so.
476 * we try to detect these and simply assume they are not gcc - if they have
477 * an issue with that they should have done it right in the first place.
478 */
479#ifndef ECB_GCC_VERSION
480 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
481 #define ECB_GCC_VERSION(major,minor) 0
482 #else
483 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
484 #endif
485#endif
486
487#if __cplusplus
488 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__
491#elif ECB_C99
492 #define ecb_inline static inline
460#else 493#else
461# define expect(expr,value) (expr) 494 #define ecb_inline static
462# define noinline
463# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
464# define inline
465# endif 495#endif
466#endif
467 496
497#if ECB_GCC_VERSION(3,1)
498 #define ecb_attribute(attrlist) __attribute__(attrlist)
499 #define ecb_is_constant(expr) __builtin_constant_p (expr)
500 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
501 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
502#else
503 #define ecb_attribute(attrlist)
504 #define ecb_is_constant(expr) 0
505 #define ecb_expect(expr,value) (expr)
506 #define ecb_prefetch(addr,rw,locality)
507#endif
508
509#define ecb_noinline ecb_attribute ((__noinline__))
510#define ecb_noreturn ecb_attribute ((__noreturn__))
511#define ecb_unused ecb_attribute ((__unused__))
512#define ecb_const ecb_attribute ((__const__))
513#define ecb_pure ecb_attribute ((__pure__))
514
515#if ECB_GCC_VERSION(4,3)
516 #define ecb_artificial ecb_attribute ((__artificial__))
517 #define ecb_hot ecb_attribute ((__hot__))
518 #define ecb_cold ecb_attribute ((__cold__))
519#else
520 #define ecb_artificial
521 #define ecb_hot
522 #define ecb_cold
523#endif
524
525/* put around conditional expressions if you are very sure that the */
526/* expression is mostly true or mostly false. note that these return */
527/* booleans, not the expression. */
468#define expect_false(expr) expect ((expr) != 0, 0) 528#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
469#define expect_true(expr) expect ((expr) != 0, 1) 529#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
530/* ecb.h end */
531
532#define expect_false(cond) ecb_expect_false (cond)
533#define expect_true(cond) ecb_expect_true (cond)
534#define noinline ecb_noinline
535
470#define inline_size static inline 536#define inline_size ecb_inline
471 537
472#if EV_MINIMAL 538#if EV_FEATURE_CODE
539# define inline_speed ecb_inline
540#else
473# define inline_speed static noinline 541# define inline_speed static noinline
474#else
475# define inline_speed static inline
476#endif 542#endif
477 543
478#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 544#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
479 545
480#if EV_MINPRI == EV_MAXPRI 546#if EV_MINPRI == EV_MAXPRI
… …
493#define ev_active(w) ((W)(w))->active 559#define ev_active(w) ((W)(w))->active
494#define ev_at(w) ((WT)(w))->at 560#define ev_at(w) ((WT)(w))->at
495 561
496#if EV_USE_REALTIME 562#if EV_USE_REALTIME
497/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 563/* sig_atomic_t is used to avoid per-thread variables or locking but still */
498/* giving it a reasonably high chance of working on typical architetcures */ 564/* giving it a reasonably high chance of working on typical architectures */
499static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 565static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
500#endif 566#endif
501 567
502#if EV_USE_MONOTONIC 568#if EV_USE_MONOTONIC
503static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 569static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
505 571
506#ifndef EV_FD_TO_WIN32_HANDLE 572#ifndef EV_FD_TO_WIN32_HANDLE
507# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) 573# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
508#endif 574#endif
509#ifndef EV_WIN32_HANDLE_TO_FD 575#ifndef EV_WIN32_HANDLE_TO_FD
510# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) 576# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
511#endif 577#endif
512#ifndef EV_WIN32_CLOSE_FD 578#ifndef EV_WIN32_CLOSE_FD
513# define EV_WIN32_CLOSE_FD(fd) close (fd) 579# define EV_WIN32_CLOSE_FD(fd) close (fd)
514#endif 580#endif
515 581
… …
517# include "ev_win32.c" 583# include "ev_win32.c"
518#endif 584#endif
519 585
520/*****************************************************************************/ 586/*****************************************************************************/
521 587
588/* define a suitable floor function (only used by periodics atm) */
589
590#if EV_USE_FLOOR
591# include <math.h>
592# define ev_floor(v) floor (v)
593#else
594
595#include <float.h>
596
597/* a floor() replacement function, should be independent of ev_tstamp type */
598static ev_tstamp noinline
599ev_floor (ev_tstamp v)
600{
601 /* the choice of shift factor is not terribly important */
602#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
603 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
604#else
605 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
606#endif
607
608 /* argument too large for an unsigned long? */
609 if (expect_false (v >= shift))
610 {
611 ev_tstamp f;
612
613 if (v == v - 1.)
614 return v; /* very large number */
615
616 f = shift * ev_floor (v * (1. / shift));
617 return f + ev_floor (v - f);
618 }
619
620 /* special treatment for negative args? */
621 if (expect_false (v < 0.))
622 {
623 ev_tstamp f = -ev_floor (-v);
624
625 return f - (f == v ? 0 : 1);
626 }
627
628 /* fits into an unsigned long */
629 return (unsigned long)v;
630}
631
632#endif
633
634/*****************************************************************************/
635
636#ifdef __linux
637# include <sys/utsname.h>
638#endif
639
640static unsigned int noinline ecb_cold
641ev_linux_version (void)
642{
643#ifdef __linux
644 unsigned int v = 0;
645 struct utsname buf;
646 int i;
647 char *p = buf.release;
648
649 if (uname (&buf))
650 return 0;
651
652 for (i = 3+1; --i; )
653 {
654 unsigned int c = 0;
655
656 for (;;)
657 {
658 if (*p >= '0' && *p <= '9')
659 c = c * 10 + *p++ - '0';
660 else
661 {
662 p += *p == '.';
663 break;
664 }
665 }
666
667 v = (v << 8) | c;
668 }
669
670 return v;
671#else
672 return 0;
673#endif
674}
675
676/*****************************************************************************/
677
678#if EV_AVOID_STDIO
679static void noinline ecb_cold
680ev_printerr (const char *msg)
681{
682 write (STDERR_FILENO, msg, strlen (msg));
683}
684#endif
685
522static void (*syserr_cb)(const char *msg); 686static void (*syserr_cb)(const char *msg);
523 687
524void 688void ecb_cold
525ev_set_syserr_cb (void (*cb)(const char *msg)) 689ev_set_syserr_cb (void (*cb)(const char *msg))
526{ 690{
527 syserr_cb = cb; 691 syserr_cb = cb;
528} 692}
529 693
530static void noinline 694static void noinline ecb_cold
531ev_syserr (const char *msg) 695ev_syserr (const char *msg)
532{ 696{
533 if (!msg) 697 if (!msg)
534 msg = "(libev) system error"; 698 msg = "(libev) system error";
535 699
536 if (syserr_cb) 700 if (syserr_cb)
537 syserr_cb (msg); 701 syserr_cb (msg);
538 else 702 else
539 { 703 {
704#if EV_AVOID_STDIO
705 ev_printerr (msg);
706 ev_printerr (": ");
707 ev_printerr (strerror (errno));
708 ev_printerr ("\n");
709#else
540 perror (msg); 710 perror (msg);
711#endif
541 abort (); 712 abort ();
542 } 713 }
543} 714}
544 715
545static void * 716static void *
546ev_realloc_emul (void *ptr, long size) 717ev_realloc_emul (void *ptr, long size)
547{ 718{
719#if __GLIBC__
720 return realloc (ptr, size);
721#else
548 /* some systems, notably openbsd and darwin, fail to properly 722 /* some systems, notably openbsd and darwin, fail to properly
549 * implement realloc (x, 0) (as required by both ansi c-98 and 723 * implement realloc (x, 0) (as required by both ansi c-89 and
550 * the single unix specification, so work around them here. 724 * the single unix specification, so work around them here.
551 */ 725 */
552 726
553 if (size) 727 if (size)
554 return realloc (ptr, size); 728 return realloc (ptr, size);
555 729
556 free (ptr); 730 free (ptr);
557 return 0; 731 return 0;
732#endif
558} 733}
559 734
560static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 735static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
561 736
562void 737void ecb_cold
563ev_set_allocator (void *(*cb)(void *ptr, long size)) 738ev_set_allocator (void *(*cb)(void *ptr, long size))
564{ 739{
565 alloc = cb; 740 alloc = cb;
566} 741}
567 742
… …
570{ 745{
571 ptr = alloc (ptr, size); 746 ptr = alloc (ptr, size);
572 747
573 if (!ptr && size) 748 if (!ptr && size)
574 { 749 {
750#if EV_AVOID_STDIO
751 ev_printerr ("(libev) memory allocation failed, aborting.\n");
752#else
575 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 753 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
754#endif
576 abort (); 755 abort ();
577 } 756 }
578 757
579 return ptr; 758 return ptr;
580} 759}
… …
596 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 775 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
597 unsigned char unused; 776 unsigned char unused;
598#if EV_USE_EPOLL 777#if EV_USE_EPOLL
599 unsigned int egen; /* generation counter to counter epoll bugs */ 778 unsigned int egen; /* generation counter to counter epoll bugs */
600#endif 779#endif
601#if EV_SELECT_IS_WINSOCKET 780#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
602 SOCKET handle; 781 SOCKET handle;
782#endif
783#if EV_USE_IOCP
784 OVERLAPPED or, ow;
603#endif 785#endif
604} ANFD; 786} ANFD;
605 787
606/* stores the pending event set for a given watcher */ 788/* stores the pending event set for a given watcher */
607typedef struct 789typedef struct
… …
662 844
663 static int ev_default_loop_ptr; 845 static int ev_default_loop_ptr;
664 846
665#endif 847#endif
666 848
667#if EV_MINIMAL < 2 849#if EV_FEATURE_API
668# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 850# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
669# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 851# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
670# define EV_INVOKE_PENDING invoke_cb (EV_A) 852# define EV_INVOKE_PENDING invoke_cb (EV_A)
671#else 853#else
672# define EV_RELEASE_CB (void)0 854# define EV_RELEASE_CB (void)0
673# define EV_ACQUIRE_CB (void)0 855# define EV_ACQUIRE_CB (void)0
674# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 856# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
675#endif 857#endif
676 858
677#define EVUNLOOP_RECURSE 0x80 859#define EVBREAK_RECURSE 0x80
678 860
679/*****************************************************************************/ 861/*****************************************************************************/
680 862
681#ifndef EV_HAVE_EV_TIME 863#ifndef EV_HAVE_EV_TIME
682ev_tstamp 864ev_tstamp
… …
726 if (delay > 0.) 908 if (delay > 0.)
727 { 909 {
728#if EV_USE_NANOSLEEP 910#if EV_USE_NANOSLEEP
729 struct timespec ts; 911 struct timespec ts;
730 912
731 ts.tv_sec = (time_t)delay; 913 EV_TS_SET (ts, delay);
732 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
733
734 nanosleep (&ts, 0); 914 nanosleep (&ts, 0);
735#elif defined(_WIN32) 915#elif defined(_WIN32)
736 Sleep ((unsigned long)(delay * 1e3)); 916 Sleep ((unsigned long)(delay * 1e3));
737#else 917#else
738 struct timeval tv; 918 struct timeval tv;
739 919
740 tv.tv_sec = (time_t)delay;
741 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
742
743 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 920 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
744 /* something not guaranteed by newer posix versions, but guaranteed */ 921 /* something not guaranteed by newer posix versions, but guaranteed */
745 /* by older ones */ 922 /* by older ones */
923 EV_TV_SET (tv, delay);
746 select (0, 0, 0, 0, &tv); 924 select (0, 0, 0, 0, &tv);
747#endif 925#endif
748 } 926 }
749} 927}
750 928
751/*****************************************************************************/ 929/*****************************************************************************/
752 930
753#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 931#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
754 932
755/* find a suitable new size for the given array, */ 933/* find a suitable new size for the given array, */
756/* hopefully by rounding to a ncie-to-malloc size */ 934/* hopefully by rounding to a nice-to-malloc size */
757inline_size int 935inline_size int
758array_nextsize (int elem, int cur, int cnt) 936array_nextsize (int elem, int cur, int cnt)
759{ 937{
760 int ncur = cur + 1; 938 int ncur = cur + 1;
761 939
… …
773 } 951 }
774 952
775 return ncur; 953 return ncur;
776} 954}
777 955
778static noinline void * 956static void * noinline ecb_cold
779array_realloc (int elem, void *base, int *cur, int cnt) 957array_realloc (int elem, void *base, int *cur, int cnt)
780{ 958{
781 *cur = array_nextsize (elem, *cur, cnt); 959 *cur = array_nextsize (elem, *cur, cnt);
782 return ev_realloc (base, elem * *cur); 960 return ev_realloc (base, elem * *cur);
783} 961}
… …
857} 1035}
858 1036
859/*****************************************************************************/ 1037/*****************************************************************************/
860 1038
861inline_speed void 1039inline_speed void
862fd_event_nc (EV_P_ int fd, int revents) 1040fd_event_nocheck (EV_P_ int fd, int revents)
863{ 1041{
864 ANFD *anfd = anfds + fd; 1042 ANFD *anfd = anfds + fd;
865 ev_io *w; 1043 ev_io *w;
866 1044
867 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1045 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
879fd_event (EV_P_ int fd, int revents) 1057fd_event (EV_P_ int fd, int revents)
880{ 1058{
881 ANFD *anfd = anfds + fd; 1059 ANFD *anfd = anfds + fd;
882 1060
883 if (expect_true (!anfd->reify)) 1061 if (expect_true (!anfd->reify))
884 fd_event_nc (EV_A_ fd, revents); 1062 fd_event_nocheck (EV_A_ fd, revents);
885} 1063}
886 1064
887void 1065void
888ev_feed_fd_event (EV_P_ int fd, int revents) 1066ev_feed_fd_event (EV_P_ int fd, int revents)
889{ 1067{
890 if (fd >= 0 && fd < anfdmax) 1068 if (fd >= 0 && fd < anfdmax)
891 fd_event_nc (EV_A_ fd, revents); 1069 fd_event_nocheck (EV_A_ fd, revents);
892} 1070}
893 1071
894/* make sure the external fd watch events are in-sync */ 1072/* make sure the external fd watch events are in-sync */
895/* with the kernel/libev internal state */ 1073/* with the kernel/libev internal state */
896inline_size void 1074inline_size void
897fd_reify (EV_P) 1075fd_reify (EV_P)
898{ 1076{
899 int i; 1077 int i;
900 1078
1079#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1080 for (i = 0; i < fdchangecnt; ++i)
1081 {
1082 int fd = fdchanges [i];
1083 ANFD *anfd = anfds + fd;
1084
1085 if (anfd->reify & EV__IOFDSET && anfd->head)
1086 {
1087 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1088
1089 if (handle != anfd->handle)
1090 {
1091 unsigned long arg;
1092
1093 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1094
1095 /* handle changed, but fd didn't - we need to do it in two steps */
1096 backend_modify (EV_A_ fd, anfd->events, 0);
1097 anfd->events = 0;
1098 anfd->handle = handle;
1099 }
1100 }
1101 }
1102#endif
1103
901 for (i = 0; i < fdchangecnt; ++i) 1104 for (i = 0; i < fdchangecnt; ++i)
902 { 1105 {
903 int fd = fdchanges [i]; 1106 int fd = fdchanges [i];
904 ANFD *anfd = anfds + fd; 1107 ANFD *anfd = anfds + fd;
905 ev_io *w; 1108 ev_io *w;
906 1109
907 unsigned char events = 0; 1110 unsigned char o_events = anfd->events;
1111 unsigned char o_reify = anfd->reify;
908 1112
909 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1113 anfd->reify = 0;
910 events |= (unsigned char)w->events;
911 1114
912#if EV_SELECT_IS_WINSOCKET 1115 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
913 if (events)
914 { 1116 {
915 unsigned long arg; 1117 anfd->events = 0;
916 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1118
917 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1119 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1120 anfd->events |= (unsigned char)w->events;
1121
1122 if (o_events != anfd->events)
1123 o_reify = EV__IOFDSET; /* actually |= */
918 } 1124 }
919#endif
920 1125
921 { 1126 if (o_reify & EV__IOFDSET)
922 unsigned char o_events = anfd->events;
923 unsigned char o_reify = anfd->reify;
924
925 anfd->reify = 0;
926 anfd->events = events;
927
928 if (o_events != events || o_reify & EV__IOFDSET)
929 backend_modify (EV_A_ fd, o_events, events); 1127 backend_modify (EV_A_ fd, o_events, anfd->events);
930 }
931 } 1128 }
932 1129
933 fdchangecnt = 0; 1130 fdchangecnt = 0;
934} 1131}
935 1132
… …
947 fdchanges [fdchangecnt - 1] = fd; 1144 fdchanges [fdchangecnt - 1] = fd;
948 } 1145 }
949} 1146}
950 1147
951/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1148/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
952inline_speed void 1149inline_speed void ecb_cold
953fd_kill (EV_P_ int fd) 1150fd_kill (EV_P_ int fd)
954{ 1151{
955 ev_io *w; 1152 ev_io *w;
956 1153
957 while ((w = (ev_io *)anfds [fd].head)) 1154 while ((w = (ev_io *)anfds [fd].head))
… …
959 ev_io_stop (EV_A_ w); 1156 ev_io_stop (EV_A_ w);
960 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1157 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
961 } 1158 }
962} 1159}
963 1160
964/* check whether the given fd is atcually valid, for error recovery */ 1161/* check whether the given fd is actually valid, for error recovery */
965inline_size int 1162inline_size int ecb_cold
966fd_valid (int fd) 1163fd_valid (int fd)
967{ 1164{
968#ifdef _WIN32 1165#ifdef _WIN32
969 return _get_osfhandle (fd) != -1; 1166 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
970#else 1167#else
971 return fcntl (fd, F_GETFD) != -1; 1168 return fcntl (fd, F_GETFD) != -1;
972#endif 1169#endif
973} 1170}
974 1171
975/* called on EBADF to verify fds */ 1172/* called on EBADF to verify fds */
976static void noinline 1173static void noinline ecb_cold
977fd_ebadf (EV_P) 1174fd_ebadf (EV_P)
978{ 1175{
979 int fd; 1176 int fd;
980 1177
981 for (fd = 0; fd < anfdmax; ++fd) 1178 for (fd = 0; fd < anfdmax; ++fd)
… …
983 if (!fd_valid (fd) && errno == EBADF) 1180 if (!fd_valid (fd) && errno == EBADF)
984 fd_kill (EV_A_ fd); 1181 fd_kill (EV_A_ fd);
985} 1182}
986 1183
987/* called on ENOMEM in select/poll to kill some fds and retry */ 1184/* called on ENOMEM in select/poll to kill some fds and retry */
988static void noinline 1185static void noinline ecb_cold
989fd_enomem (EV_P) 1186fd_enomem (EV_P)
990{ 1187{
991 int fd; 1188 int fd;
992 1189
993 for (fd = anfdmax; fd--; ) 1190 for (fd = anfdmax; fd--; )
… …
1011 anfds [fd].emask = 0; 1208 anfds [fd].emask = 0;
1012 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1209 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
1013 } 1210 }
1014} 1211}
1015 1212
1213/* used to prepare libev internal fd's */
1214/* this is not fork-safe */
1215inline_speed void
1216fd_intern (int fd)
1217{
1218#ifdef _WIN32
1219 unsigned long arg = 1;
1220 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1221#else
1222 fcntl (fd, F_SETFD, FD_CLOEXEC);
1223 fcntl (fd, F_SETFL, O_NONBLOCK);
1224#endif
1225}
1226
1016/*****************************************************************************/ 1227/*****************************************************************************/
1017 1228
1018/* 1229/*
1019 * the heap functions want a real array index. array index 0 uis guaranteed to not 1230 * the heap functions want a real array index. array index 0 is guaranteed to not
1020 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1231 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1021 * the branching factor of the d-tree. 1232 * the branching factor of the d-tree.
1022 */ 1233 */
1023 1234
1024/* 1235/*
… …
1172 1383
1173static ANSIG signals [EV_NSIG - 1]; 1384static ANSIG signals [EV_NSIG - 1];
1174 1385
1175/*****************************************************************************/ 1386/*****************************************************************************/
1176 1387
1177/* used to prepare libev internal fd's */ 1388#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1178/* this is not fork-safe */
1179inline_speed void
1180fd_intern (int fd)
1181{
1182#ifdef _WIN32
1183 unsigned long arg = 1;
1184 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1185#else
1186 fcntl (fd, F_SETFD, FD_CLOEXEC);
1187 fcntl (fd, F_SETFL, O_NONBLOCK);
1188#endif
1189}
1190 1389
1191static void noinline 1390static void noinline ecb_cold
1192evpipe_init (EV_P) 1391evpipe_init (EV_P)
1193{ 1392{
1194 if (!ev_is_active (&pipe_w)) 1393 if (!ev_is_active (&pipe_w))
1195 { 1394 {
1196#if EV_USE_EVENTFD 1395# if EV_USE_EVENTFD
1197 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1396 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1198 if (evfd < 0 && errno == EINVAL) 1397 if (evfd < 0 && errno == EINVAL)
1199 evfd = eventfd (0, 0); 1398 evfd = eventfd (0, 0);
1200 1399
1201 if (evfd >= 0) 1400 if (evfd >= 0)
… …
1203 evpipe [0] = -1; 1402 evpipe [0] = -1;
1204 fd_intern (evfd); /* doing it twice doesn't hurt */ 1403 fd_intern (evfd); /* doing it twice doesn't hurt */
1205 ev_io_set (&pipe_w, evfd, EV_READ); 1404 ev_io_set (&pipe_w, evfd, EV_READ);
1206 } 1405 }
1207 else 1406 else
1208#endif 1407# endif
1209 { 1408 {
1210 while (pipe (evpipe)) 1409 while (pipe (evpipe))
1211 ev_syserr ("(libev) error creating signal/async pipe"); 1410 ev_syserr ("(libev) error creating signal/async pipe");
1212 1411
1213 fd_intern (evpipe [0]); 1412 fd_intern (evpipe [0]);
… …
1218 ev_io_start (EV_A_ &pipe_w); 1417 ev_io_start (EV_A_ &pipe_w);
1219 ev_unref (EV_A); /* watcher should not keep loop alive */ 1418 ev_unref (EV_A); /* watcher should not keep loop alive */
1220 } 1419 }
1221} 1420}
1222 1421
1223inline_size void 1422inline_speed void
1224evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1423evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1225{ 1424{
1226 if (!*flag) 1425 if (!*flag)
1227 { 1426 {
1228 int old_errno = errno; /* save errno because write might clobber it */
1229
1230 *flag = 1; 1427 *flag = 1;
1231 1428
1429 pipe_write_skipped = 1;
1430
1431 if (pipe_write_wanted)
1432 {
1433 int old_errno;
1434
1435 pipe_write_skipped = 0;
1436
1437 old_errno = errno; /* save errno because write will clobber it */
1438
1232#if EV_USE_EVENTFD 1439#if EV_USE_EVENTFD
1233 if (evfd >= 0) 1440 if (evfd >= 0)
1234 { 1441 {
1235 uint64_t counter = 1; 1442 uint64_t counter = 1;
1236 write (evfd, &counter, sizeof (uint64_t)); 1443 write (evfd, &counter, sizeof (uint64_t));
1444 }
1445 else
1446#endif
1447 {
1448 /* win32 people keep sending patches that change this write() to send() */
1449 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1450 /* so when you think this write should be a send instead, please find out */
1451 /* where your send() is from - it's definitely not the microsoft send, and */
1452 /* tell me. thank you. */
1453 write (evpipe [1], &(evpipe [1]), 1);
1454 }
1455
1456 errno = old_errno;
1237 } 1457 }
1238 else
1239#endif
1240 write (evpipe [1], &old_errno, 1);
1241
1242 errno = old_errno;
1243 } 1458 }
1244} 1459}
1245 1460
1246/* called whenever the libev signal pipe */ 1461/* called whenever the libev signal pipe */
1247/* got some events (signal, async) */ 1462/* got some events (signal, async) */
1248static void 1463static void
1249pipecb (EV_P_ ev_io *iow, int revents) 1464pipecb (EV_P_ ev_io *iow, int revents)
1250{ 1465{
1251 int i; 1466 int i;
1252 1467
1468 if (revents & EV_READ)
1469 {
1253#if EV_USE_EVENTFD 1470#if EV_USE_EVENTFD
1254 if (evfd >= 0) 1471 if (evfd >= 0)
1255 { 1472 {
1256 uint64_t counter; 1473 uint64_t counter;
1257 read (evfd, &counter, sizeof (uint64_t)); 1474 read (evfd, &counter, sizeof (uint64_t));
1258 } 1475 }
1259 else 1476 else
1260#endif 1477#endif
1261 { 1478 {
1262 char dummy; 1479 char dummy;
1480 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1263 read (evpipe [0], &dummy, 1); 1481 read (evpipe [0], &dummy, 1);
1482 }
1264 } 1483 }
1265 1484
1485 pipe_write_skipped = 0;
1486
1487#if EV_SIGNAL_ENABLE
1266 if (sig_pending) 1488 if (sig_pending)
1267 { 1489 {
1268 sig_pending = 0; 1490 sig_pending = 0;
1269 1491
1270 for (i = EV_NSIG - 1; i--; ) 1492 for (i = EV_NSIG - 1; i--; )
1271 if (expect_false (signals [i].pending)) 1493 if (expect_false (signals [i].pending))
1272 ev_feed_signal_event (EV_A_ i + 1); 1494 ev_feed_signal_event (EV_A_ i + 1);
1273 } 1495 }
1496#endif
1274 1497
1275#if EV_ASYNC_ENABLE 1498#if EV_ASYNC_ENABLE
1276 if (async_pending) 1499 if (async_pending)
1277 { 1500 {
1278 async_pending = 0; 1501 async_pending = 0;
… …
1287#endif 1510#endif
1288} 1511}
1289 1512
1290/*****************************************************************************/ 1513/*****************************************************************************/
1291 1514
1515void
1516ev_feed_signal (int signum)
1517{
1518#if EV_MULTIPLICITY
1519 EV_P = signals [signum - 1].loop;
1520
1521 if (!EV_A)
1522 return;
1523#endif
1524
1525 if (!ev_active (&pipe_w))
1526 return;
1527
1528 signals [signum - 1].pending = 1;
1529 evpipe_write (EV_A_ &sig_pending);
1530}
1531
1292static void 1532static void
1293ev_sighandler (int signum) 1533ev_sighandler (int signum)
1294{ 1534{
1295#if EV_MULTIPLICITY
1296 EV_P = signals [signum - 1].loop;
1297#endif
1298
1299#if _WIN32 1535#ifdef _WIN32
1300 signal (signum, ev_sighandler); 1536 signal (signum, ev_sighandler);
1301#endif 1537#endif
1302 1538
1303 signals [signum - 1].pending = 1; 1539 ev_feed_signal (signum);
1304 evpipe_write (EV_A_ &sig_pending);
1305} 1540}
1306 1541
1307void noinline 1542void noinline
1308ev_feed_signal_event (EV_P_ int signum) 1543ev_feed_signal_event (EV_P_ int signum)
1309{ 1544{
… …
1346 break; 1581 break;
1347 } 1582 }
1348} 1583}
1349#endif 1584#endif
1350 1585
1586#endif
1587
1351/*****************************************************************************/ 1588/*****************************************************************************/
1352 1589
1590#if EV_CHILD_ENABLE
1353static WL childs [EV_PID_HASHSIZE]; 1591static WL childs [EV_PID_HASHSIZE];
1354
1355#ifndef _WIN32
1356 1592
1357static ev_signal childev; 1593static ev_signal childev;
1358 1594
1359#ifndef WIFCONTINUED 1595#ifndef WIFCONTINUED
1360# define WIFCONTINUED(status) 0 1596# define WIFCONTINUED(status) 0
… …
1365child_reap (EV_P_ int chain, int pid, int status) 1601child_reap (EV_P_ int chain, int pid, int status)
1366{ 1602{
1367 ev_child *w; 1603 ev_child *w;
1368 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1604 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1369 1605
1370 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1606 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1371 { 1607 {
1372 if ((w->pid == pid || !w->pid) 1608 if ((w->pid == pid || !w->pid)
1373 && (!traced || (w->flags & 1))) 1609 && (!traced || (w->flags & 1)))
1374 { 1610 {
1375 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1611 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1400 /* make sure we are called again until all children have been reaped */ 1636 /* make sure we are called again until all children have been reaped */
1401 /* we need to do it this way so that the callback gets called before we continue */ 1637 /* we need to do it this way so that the callback gets called before we continue */
1402 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1638 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1403 1639
1404 child_reap (EV_A_ pid, pid, status); 1640 child_reap (EV_A_ pid, pid, status);
1405 if (EV_PID_HASHSIZE > 1) 1641 if ((EV_PID_HASHSIZE) > 1)
1406 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1642 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1407} 1643}
1408 1644
1409#endif 1645#endif
1410 1646
1411/*****************************************************************************/ 1647/*****************************************************************************/
1412 1648
1649#if EV_USE_IOCP
1650# include "ev_iocp.c"
1651#endif
1413#if EV_USE_PORT 1652#if EV_USE_PORT
1414# include "ev_port.c" 1653# include "ev_port.c"
1415#endif 1654#endif
1416#if EV_USE_KQUEUE 1655#if EV_USE_KQUEUE
1417# include "ev_kqueue.c" 1656# include "ev_kqueue.c"
… …
1424#endif 1663#endif
1425#if EV_USE_SELECT 1664#if EV_USE_SELECT
1426# include "ev_select.c" 1665# include "ev_select.c"
1427#endif 1666#endif
1428 1667
1429int 1668int ecb_cold
1430ev_version_major (void) 1669ev_version_major (void)
1431{ 1670{
1432 return EV_VERSION_MAJOR; 1671 return EV_VERSION_MAJOR;
1433} 1672}
1434 1673
1435int 1674int ecb_cold
1436ev_version_minor (void) 1675ev_version_minor (void)
1437{ 1676{
1438 return EV_VERSION_MINOR; 1677 return EV_VERSION_MINOR;
1439} 1678}
1440 1679
1441/* return true if we are running with elevated privileges and should ignore env variables */ 1680/* return true if we are running with elevated privileges and should ignore env variables */
1442int inline_size 1681int inline_size ecb_cold
1443enable_secure (void) 1682enable_secure (void)
1444{ 1683{
1445#ifdef _WIN32 1684#ifdef _WIN32
1446 return 0; 1685 return 0;
1447#else 1686#else
1448 return getuid () != geteuid () 1687 return getuid () != geteuid ()
1449 || getgid () != getegid (); 1688 || getgid () != getegid ();
1450#endif 1689#endif
1451} 1690}
1452 1691
1453unsigned int 1692unsigned int ecb_cold
1454ev_supported_backends (void) 1693ev_supported_backends (void)
1455{ 1694{
1456 unsigned int flags = 0; 1695 unsigned int flags = 0;
1457 1696
1458 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1697 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1462 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1701 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1463 1702
1464 return flags; 1703 return flags;
1465} 1704}
1466 1705
1467unsigned int 1706unsigned int ecb_cold
1468ev_recommended_backends (void) 1707ev_recommended_backends (void)
1469{ 1708{
1470 unsigned int flags = ev_supported_backends (); 1709 unsigned int flags = ev_supported_backends ();
1471 1710
1472#ifndef __NetBSD__ 1711#ifndef __NetBSD__
… …
1477#ifdef __APPLE__ 1716#ifdef __APPLE__
1478 /* only select works correctly on that "unix-certified" platform */ 1717 /* only select works correctly on that "unix-certified" platform */
1479 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1718 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1480 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1719 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1481#endif 1720#endif
1721#ifdef __FreeBSD__
1722 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1723#endif
1482 1724
1483 return flags; 1725 return flags;
1484} 1726}
1485 1727
1486unsigned int 1728unsigned int ecb_cold
1487ev_embeddable_backends (void) 1729ev_embeddable_backends (void)
1488{ 1730{
1489 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1731 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1490 1732
1491 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1733 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1492 /* please fix it and tell me how to detect the fix */ 1734 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1493 flags &= ~EVBACKEND_EPOLL; 1735 flags &= ~EVBACKEND_EPOLL;
1494 1736
1495 return flags; 1737 return flags;
1496} 1738}
1497 1739
1498unsigned int 1740unsigned int
1499ev_backend (EV_P) 1741ev_backend (EV_P)
1500{ 1742{
1501 return backend; 1743 return backend;
1502} 1744}
1503 1745
1504#if EV_MINIMAL < 2 1746#if EV_FEATURE_API
1505unsigned int 1747unsigned int
1506ev_loop_count (EV_P) 1748ev_iteration (EV_P)
1507{ 1749{
1508 return loop_count; 1750 return loop_count;
1509} 1751}
1510 1752
1511unsigned int 1753unsigned int
1512ev_loop_depth (EV_P) 1754ev_depth (EV_P)
1513{ 1755{
1514 return loop_depth; 1756 return loop_depth;
1515} 1757}
1516 1758
1517void 1759void
… …
1536ev_userdata (EV_P) 1778ev_userdata (EV_P)
1537{ 1779{
1538 return userdata; 1780 return userdata;
1539} 1781}
1540 1782
1783void
1541void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 1784ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1542{ 1785{
1543 invoke_cb = invoke_pending_cb; 1786 invoke_cb = invoke_pending_cb;
1544} 1787}
1545 1788
1789void
1546void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 1790ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1547{ 1791{
1548 release_cb = release; 1792 release_cb = release;
1549 acquire_cb = acquire; 1793 acquire_cb = acquire;
1550} 1794}
1551#endif 1795#endif
1552 1796
1553/* initialise a loop structure, must be zero-initialised */ 1797/* initialise a loop structure, must be zero-initialised */
1554static void noinline 1798static void noinline ecb_cold
1555loop_init (EV_P_ unsigned int flags) 1799loop_init (EV_P_ unsigned int flags)
1556{ 1800{
1557 if (!backend) 1801 if (!backend)
1558 { 1802 {
1803 origflags = flags;
1804
1559#if EV_USE_REALTIME 1805#if EV_USE_REALTIME
1560 if (!have_realtime) 1806 if (!have_realtime)
1561 { 1807 {
1562 struct timespec ts; 1808 struct timespec ts;
1563 1809
… …
1585 if (!(flags & EVFLAG_NOENV) 1831 if (!(flags & EVFLAG_NOENV)
1586 && !enable_secure () 1832 && !enable_secure ()
1587 && getenv ("LIBEV_FLAGS")) 1833 && getenv ("LIBEV_FLAGS"))
1588 flags = atoi (getenv ("LIBEV_FLAGS")); 1834 flags = atoi (getenv ("LIBEV_FLAGS"));
1589 1835
1590 ev_rt_now = ev_time (); 1836 ev_rt_now = ev_time ();
1591 mn_now = get_clock (); 1837 mn_now = get_clock ();
1592 now_floor = mn_now; 1838 now_floor = mn_now;
1593 rtmn_diff = ev_rt_now - mn_now; 1839 rtmn_diff = ev_rt_now - mn_now;
1594#if EV_MINIMAL < 2 1840#if EV_FEATURE_API
1595 invoke_cb = ev_invoke_pending; 1841 invoke_cb = ev_invoke_pending;
1596#endif 1842#endif
1597 1843
1598 io_blocktime = 0.; 1844 io_blocktime = 0.;
1599 timeout_blocktime = 0.; 1845 timeout_blocktime = 0.;
1600 backend = 0; 1846 backend = 0;
1601 backend_fd = -1; 1847 backend_fd = -1;
1602 sig_pending = 0; 1848 sig_pending = 0;
1603#if EV_ASYNC_ENABLE 1849#if EV_ASYNC_ENABLE
1604 async_pending = 0; 1850 async_pending = 0;
1605#endif 1851#endif
1852 pipe_write_skipped = 0;
1853 pipe_write_wanted = 0;
1606#if EV_USE_INOTIFY 1854#if EV_USE_INOTIFY
1607 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 1855 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1608#endif 1856#endif
1609#if EV_USE_SIGNALFD 1857#if EV_USE_SIGNALFD
1610 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; 1858 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1611#endif 1859#endif
1612 1860
1613 if (!(flags & 0x0000ffffU)) 1861 if (!(flags & EVBACKEND_MASK))
1614 flags |= ev_recommended_backends (); 1862 flags |= ev_recommended_backends ();
1615 1863
1864#if EV_USE_IOCP
1865 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1866#endif
1616#if EV_USE_PORT 1867#if EV_USE_PORT
1617 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1868 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1618#endif 1869#endif
1619#if EV_USE_KQUEUE 1870#if EV_USE_KQUEUE
1620 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1871 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1629 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1880 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1630#endif 1881#endif
1631 1882
1632 ev_prepare_init (&pending_w, pendingcb); 1883 ev_prepare_init (&pending_w, pendingcb);
1633 1884
1885#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1634 ev_init (&pipe_w, pipecb); 1886 ev_init (&pipe_w, pipecb);
1635 ev_set_priority (&pipe_w, EV_MAXPRI); 1887 ev_set_priority (&pipe_w, EV_MAXPRI);
1888#endif
1636 } 1889 }
1637} 1890}
1638 1891
1639/* free up a loop structure */ 1892/* free up a loop structure */
1640static void noinline 1893void ecb_cold
1641loop_destroy (EV_P) 1894ev_loop_destroy (EV_P)
1642{ 1895{
1643 int i; 1896 int i;
1897
1898#if EV_MULTIPLICITY
1899 /* mimic free (0) */
1900 if (!EV_A)
1901 return;
1902#endif
1903
1904#if EV_CLEANUP_ENABLE
1905 /* queue cleanup watchers (and execute them) */
1906 if (expect_false (cleanupcnt))
1907 {
1908 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1909 EV_INVOKE_PENDING;
1910 }
1911#endif
1912
1913#if EV_CHILD_ENABLE
1914 if (ev_is_active (&childev))
1915 {
1916 ev_ref (EV_A); /* child watcher */
1917 ev_signal_stop (EV_A_ &childev);
1918 }
1919#endif
1644 1920
1645 if (ev_is_active (&pipe_w)) 1921 if (ev_is_active (&pipe_w))
1646 { 1922 {
1647 /*ev_ref (EV_A);*/ 1923 /*ev_ref (EV_A);*/
1648 /*ev_io_stop (EV_A_ &pipe_w);*/ 1924 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1659 } 1935 }
1660 } 1936 }
1661 1937
1662#if EV_USE_SIGNALFD 1938#if EV_USE_SIGNALFD
1663 if (ev_is_active (&sigfd_w)) 1939 if (ev_is_active (&sigfd_w))
1664 {
1665 /*ev_ref (EV_A);*/
1666 /*ev_io_stop (EV_A_ &sigfd_w);*/
1667
1668 close (sigfd); 1940 close (sigfd);
1669 }
1670#endif 1941#endif
1671 1942
1672#if EV_USE_INOTIFY 1943#if EV_USE_INOTIFY
1673 if (fs_fd >= 0) 1944 if (fs_fd >= 0)
1674 close (fs_fd); 1945 close (fs_fd);
1675#endif 1946#endif
1676 1947
1677 if (backend_fd >= 0) 1948 if (backend_fd >= 0)
1678 close (backend_fd); 1949 close (backend_fd);
1679 1950
1951#if EV_USE_IOCP
1952 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1953#endif
1680#if EV_USE_PORT 1954#if EV_USE_PORT
1681 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1955 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1682#endif 1956#endif
1683#if EV_USE_KQUEUE 1957#if EV_USE_KQUEUE
1684 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1958 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1711 array_free (periodic, EMPTY); 1985 array_free (periodic, EMPTY);
1712#endif 1986#endif
1713#if EV_FORK_ENABLE 1987#if EV_FORK_ENABLE
1714 array_free (fork, EMPTY); 1988 array_free (fork, EMPTY);
1715#endif 1989#endif
1990#if EV_CLEANUP_ENABLE
1991 array_free (cleanup, EMPTY);
1992#endif
1716 array_free (prepare, EMPTY); 1993 array_free (prepare, EMPTY);
1717 array_free (check, EMPTY); 1994 array_free (check, EMPTY);
1718#if EV_ASYNC_ENABLE 1995#if EV_ASYNC_ENABLE
1719 array_free (async, EMPTY); 1996 array_free (async, EMPTY);
1720#endif 1997#endif
1721 1998
1722 backend = 0; 1999 backend = 0;
2000
2001#if EV_MULTIPLICITY
2002 if (ev_is_default_loop (EV_A))
2003#endif
2004 ev_default_loop_ptr = 0;
2005#if EV_MULTIPLICITY
2006 else
2007 ev_free (EV_A);
2008#endif
1723} 2009}
1724 2010
1725#if EV_USE_INOTIFY 2011#if EV_USE_INOTIFY
1726inline_size void infy_fork (EV_P); 2012inline_size void infy_fork (EV_P);
1727#endif 2013#endif
… …
1742 infy_fork (EV_A); 2028 infy_fork (EV_A);
1743#endif 2029#endif
1744 2030
1745 if (ev_is_active (&pipe_w)) 2031 if (ev_is_active (&pipe_w))
1746 { 2032 {
1747 /* this "locks" the handlers against writing to the pipe */ 2033 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1748 /* while we modify the fd vars */
1749 sig_pending = 1;
1750#if EV_ASYNC_ENABLE
1751 async_pending = 1;
1752#endif
1753 2034
1754 ev_ref (EV_A); 2035 ev_ref (EV_A);
1755 ev_io_stop (EV_A_ &pipe_w); 2036 ev_io_stop (EV_A_ &pipe_w);
1756 2037
1757#if EV_USE_EVENTFD 2038#if EV_USE_EVENTFD
… …
1763 { 2044 {
1764 EV_WIN32_CLOSE_FD (evpipe [0]); 2045 EV_WIN32_CLOSE_FD (evpipe [0]);
1765 EV_WIN32_CLOSE_FD (evpipe [1]); 2046 EV_WIN32_CLOSE_FD (evpipe [1]);
1766 } 2047 }
1767 2048
2049#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1768 evpipe_init (EV_A); 2050 evpipe_init (EV_A);
1769 /* now iterate over everything, in case we missed something */ 2051 /* now iterate over everything, in case we missed something */
1770 pipecb (EV_A_ &pipe_w, EV_READ); 2052 pipecb (EV_A_ &pipe_w, EV_READ);
2053#endif
1771 } 2054 }
1772 2055
1773 postfork = 0; 2056 postfork = 0;
1774} 2057}
1775 2058
1776#if EV_MULTIPLICITY 2059#if EV_MULTIPLICITY
1777 2060
1778struct ev_loop * 2061struct ev_loop * ecb_cold
1779ev_loop_new (unsigned int flags) 2062ev_loop_new (unsigned int flags)
1780{ 2063{
1781 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2064 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1782 2065
1783 memset (EV_A, 0, sizeof (struct ev_loop)); 2066 memset (EV_A, 0, sizeof (struct ev_loop));
1784 loop_init (EV_A_ flags); 2067 loop_init (EV_A_ flags);
1785 2068
1786 if (ev_backend (EV_A)) 2069 if (ev_backend (EV_A))
1787 return EV_A; 2070 return EV_A;
1788 2071
2072 ev_free (EV_A);
1789 return 0; 2073 return 0;
1790} 2074}
1791 2075
1792void
1793ev_loop_destroy (EV_P)
1794{
1795 loop_destroy (EV_A);
1796 ev_free (loop);
1797}
1798
1799void
1800ev_loop_fork (EV_P)
1801{
1802 postfork = 1; /* must be in line with ev_default_fork */
1803}
1804#endif /* multiplicity */ 2076#endif /* multiplicity */
1805 2077
1806#if EV_VERIFY 2078#if EV_VERIFY
1807static void noinline 2079static void noinline ecb_cold
1808verify_watcher (EV_P_ W w) 2080verify_watcher (EV_P_ W w)
1809{ 2081{
1810 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2082 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1811 2083
1812 if (w->pending) 2084 if (w->pending)
1813 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2085 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1814} 2086}
1815 2087
1816static void noinline 2088static void noinline ecb_cold
1817verify_heap (EV_P_ ANHE *heap, int N) 2089verify_heap (EV_P_ ANHE *heap, int N)
1818{ 2090{
1819 int i; 2091 int i;
1820 2092
1821 for (i = HEAP0; i < N + HEAP0; ++i) 2093 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1826 2098
1827 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2099 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1828 } 2100 }
1829} 2101}
1830 2102
1831static void noinline 2103static void noinline ecb_cold
1832array_verify (EV_P_ W *ws, int cnt) 2104array_verify (EV_P_ W *ws, int cnt)
1833{ 2105{
1834 while (cnt--) 2106 while (cnt--)
1835 { 2107 {
1836 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2108 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1837 verify_watcher (EV_A_ ws [cnt]); 2109 verify_watcher (EV_A_ ws [cnt]);
1838 } 2110 }
1839} 2111}
1840#endif 2112#endif
1841 2113
1842#if EV_MINIMAL < 2 2114#if EV_FEATURE_API
1843void 2115void ecb_cold
1844ev_loop_verify (EV_P) 2116ev_verify (EV_P)
1845{ 2117{
1846#if EV_VERIFY 2118#if EV_VERIFY
1847 int i; 2119 int i;
1848 WL w; 2120 WL w;
1849 2121
… …
1883#if EV_FORK_ENABLE 2155#if EV_FORK_ENABLE
1884 assert (forkmax >= forkcnt); 2156 assert (forkmax >= forkcnt);
1885 array_verify (EV_A_ (W *)forks, forkcnt); 2157 array_verify (EV_A_ (W *)forks, forkcnt);
1886#endif 2158#endif
1887 2159
2160#if EV_CLEANUP_ENABLE
2161 assert (cleanupmax >= cleanupcnt);
2162 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2163#endif
2164
1888#if EV_ASYNC_ENABLE 2165#if EV_ASYNC_ENABLE
1889 assert (asyncmax >= asynccnt); 2166 assert (asyncmax >= asynccnt);
1890 array_verify (EV_A_ (W *)asyncs, asynccnt); 2167 array_verify (EV_A_ (W *)asyncs, asynccnt);
1891#endif 2168#endif
1892 2169
2170#if EV_PREPARE_ENABLE
1893 assert (preparemax >= preparecnt); 2171 assert (preparemax >= preparecnt);
1894 array_verify (EV_A_ (W *)prepares, preparecnt); 2172 array_verify (EV_A_ (W *)prepares, preparecnt);
2173#endif
1895 2174
2175#if EV_CHECK_ENABLE
1896 assert (checkmax >= checkcnt); 2176 assert (checkmax >= checkcnt);
1897 array_verify (EV_A_ (W *)checks, checkcnt); 2177 array_verify (EV_A_ (W *)checks, checkcnt);
2178#endif
1898 2179
1899# if 0 2180# if 0
2181#if EV_CHILD_ENABLE
1900 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2182 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1901 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) 2183 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2184#endif
1902# endif 2185# endif
1903#endif 2186#endif
1904} 2187}
1905#endif 2188#endif
1906 2189
1907#if EV_MULTIPLICITY 2190#if EV_MULTIPLICITY
1908struct ev_loop * 2191struct ev_loop * ecb_cold
1909ev_default_loop_init (unsigned int flags)
1910#else 2192#else
1911int 2193int
2194#endif
1912ev_default_loop (unsigned int flags) 2195ev_default_loop (unsigned int flags)
1913#endif
1914{ 2196{
1915 if (!ev_default_loop_ptr) 2197 if (!ev_default_loop_ptr)
1916 { 2198 {
1917#if EV_MULTIPLICITY 2199#if EV_MULTIPLICITY
1918 EV_P = ev_default_loop_ptr = &default_loop_struct; 2200 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1922 2204
1923 loop_init (EV_A_ flags); 2205 loop_init (EV_A_ flags);
1924 2206
1925 if (ev_backend (EV_A)) 2207 if (ev_backend (EV_A))
1926 { 2208 {
1927#ifndef _WIN32 2209#if EV_CHILD_ENABLE
1928 ev_signal_init (&childev, childcb, SIGCHLD); 2210 ev_signal_init (&childev, childcb, SIGCHLD);
1929 ev_set_priority (&childev, EV_MAXPRI); 2211 ev_set_priority (&childev, EV_MAXPRI);
1930 ev_signal_start (EV_A_ &childev); 2212 ev_signal_start (EV_A_ &childev);
1931 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2213 ev_unref (EV_A); /* child watcher should not keep loop alive */
1932#endif 2214#endif
… …
1937 2219
1938 return ev_default_loop_ptr; 2220 return ev_default_loop_ptr;
1939} 2221}
1940 2222
1941void 2223void
1942ev_default_destroy (void) 2224ev_loop_fork (EV_P)
1943{ 2225{
1944#if EV_MULTIPLICITY
1945 EV_P = ev_default_loop_ptr;
1946#endif
1947
1948 ev_default_loop_ptr = 0;
1949
1950#ifndef _WIN32
1951 ev_ref (EV_A); /* child watcher */
1952 ev_signal_stop (EV_A_ &childev);
1953#endif
1954
1955 loop_destroy (EV_A);
1956}
1957
1958void
1959ev_default_fork (void)
1960{
1961#if EV_MULTIPLICITY
1962 EV_P = ev_default_loop_ptr;
1963#endif
1964
1965 postfork = 1; /* must be in line with ev_loop_fork */ 2226 postfork = 1; /* must be in line with ev_default_fork */
1966} 2227}
1967 2228
1968/*****************************************************************************/ 2229/*****************************************************************************/
1969 2230
1970void 2231void
… …
1992 2253
1993 for (pri = NUMPRI; pri--; ) 2254 for (pri = NUMPRI; pri--; )
1994 while (pendingcnt [pri]) 2255 while (pendingcnt [pri])
1995 { 2256 {
1996 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2257 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1997
1998 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1999 /* ^ this is no longer true, as pending_w could be here */
2000 2258
2001 p->w->pending = 0; 2259 p->w->pending = 0;
2002 EV_CB_INVOKE (p->w, p->events); 2260 EV_CB_INVOKE (p->w, p->events);
2003 EV_FREQUENT_CHECK; 2261 EV_FREQUENT_CHECK;
2004 } 2262 }
… …
2061 EV_FREQUENT_CHECK; 2319 EV_FREQUENT_CHECK;
2062 feed_reverse (EV_A_ (W)w); 2320 feed_reverse (EV_A_ (W)w);
2063 } 2321 }
2064 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2322 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2065 2323
2066 feed_reverse_done (EV_A_ EV_TIMEOUT); 2324 feed_reverse_done (EV_A_ EV_TIMER);
2067 } 2325 }
2068} 2326}
2069 2327
2070#if EV_PERIODIC_ENABLE 2328#if EV_PERIODIC_ENABLE
2329
2330static void noinline
2331periodic_recalc (EV_P_ ev_periodic *w)
2332{
2333 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2334 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2335
2336 /* the above almost always errs on the low side */
2337 while (at <= ev_rt_now)
2338 {
2339 ev_tstamp nat = at + w->interval;
2340
2341 /* when resolution fails us, we use ev_rt_now */
2342 if (expect_false (nat == at))
2343 {
2344 at = ev_rt_now;
2345 break;
2346 }
2347
2348 at = nat;
2349 }
2350
2351 ev_at (w) = at;
2352}
2353
2071/* make periodics pending */ 2354/* make periodics pending */
2072inline_size void 2355inline_size void
2073periodics_reify (EV_P) 2356periodics_reify (EV_P)
2074{ 2357{
2075 EV_FREQUENT_CHECK; 2358 EV_FREQUENT_CHECK;
… …
2094 ANHE_at_cache (periodics [HEAP0]); 2377 ANHE_at_cache (periodics [HEAP0]);
2095 downheap (periodics, periodiccnt, HEAP0); 2378 downheap (periodics, periodiccnt, HEAP0);
2096 } 2379 }
2097 else if (w->interval) 2380 else if (w->interval)
2098 { 2381 {
2099 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2382 periodic_recalc (EV_A_ w);
2100 /* if next trigger time is not sufficiently in the future, put it there */
2101 /* this might happen because of floating point inexactness */
2102 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2103 {
2104 ev_at (w) += w->interval;
2105
2106 /* if interval is unreasonably low we might still have a time in the past */
2107 /* so correct this. this will make the periodic very inexact, but the user */
2108 /* has effectively asked to get triggered more often than possible */
2109 if (ev_at (w) < ev_rt_now)
2110 ev_at (w) = ev_rt_now;
2111 }
2112
2113 ANHE_at_cache (periodics [HEAP0]); 2383 ANHE_at_cache (periodics [HEAP0]);
2114 downheap (periodics, periodiccnt, HEAP0); 2384 downheap (periodics, periodiccnt, HEAP0);
2115 } 2385 }
2116 else 2386 else
2117 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2387 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2124 feed_reverse_done (EV_A_ EV_PERIODIC); 2394 feed_reverse_done (EV_A_ EV_PERIODIC);
2125 } 2395 }
2126} 2396}
2127 2397
2128/* simply recalculate all periodics */ 2398/* simply recalculate all periodics */
2129/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2399/* TODO: maybe ensure that at least one event happens when jumping forward? */
2130static void noinline 2400static void noinline ecb_cold
2131periodics_reschedule (EV_P) 2401periodics_reschedule (EV_P)
2132{ 2402{
2133 int i; 2403 int i;
2134 2404
2135 /* adjust periodics after time jump */ 2405 /* adjust periodics after time jump */
… …
2138 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2408 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2139 2409
2140 if (w->reschedule_cb) 2410 if (w->reschedule_cb)
2141 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2411 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2142 else if (w->interval) 2412 else if (w->interval)
2143 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2413 periodic_recalc (EV_A_ w);
2144 2414
2145 ANHE_at_cache (periodics [i]); 2415 ANHE_at_cache (periodics [i]);
2146 } 2416 }
2147 2417
2148 reheap (periodics, periodiccnt); 2418 reheap (periodics, periodiccnt);
2149} 2419}
2150#endif 2420#endif
2151 2421
2152/* adjust all timers by a given offset */ 2422/* adjust all timers by a given offset */
2153static void noinline 2423static void noinline ecb_cold
2154timers_reschedule (EV_P_ ev_tstamp adjust) 2424timers_reschedule (EV_P_ ev_tstamp adjust)
2155{ 2425{
2156 int i; 2426 int i;
2157 2427
2158 for (i = 0; i < timercnt; ++i) 2428 for (i = 0; i < timercnt; ++i)
… …
2162 ANHE_at_cache (*he); 2432 ANHE_at_cache (*he);
2163 } 2433 }
2164} 2434}
2165 2435
2166/* fetch new monotonic and realtime times from the kernel */ 2436/* fetch new monotonic and realtime times from the kernel */
2167/* also detetc if there was a timejump, and act accordingly */ 2437/* also detect if there was a timejump, and act accordingly */
2168inline_speed void 2438inline_speed void
2169time_update (EV_P_ ev_tstamp max_block) 2439time_update (EV_P_ ev_tstamp max_block)
2170{ 2440{
2171#if EV_USE_MONOTONIC 2441#if EV_USE_MONOTONIC
2172 if (expect_true (have_monotonic)) 2442 if (expect_true (have_monotonic))
… …
2195 * doesn't hurt either as we only do this on time-jumps or 2465 * doesn't hurt either as we only do this on time-jumps or
2196 * in the unlikely event of having been preempted here. 2466 * in the unlikely event of having been preempted here.
2197 */ 2467 */
2198 for (i = 4; --i; ) 2468 for (i = 4; --i; )
2199 { 2469 {
2470 ev_tstamp diff;
2200 rtmn_diff = ev_rt_now - mn_now; 2471 rtmn_diff = ev_rt_now - mn_now;
2201 2472
2473 diff = odiff - rtmn_diff;
2474
2202 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2475 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2203 return; /* all is well */ 2476 return; /* all is well */
2204 2477
2205 ev_rt_now = ev_time (); 2478 ev_rt_now = ev_time ();
2206 mn_now = get_clock (); 2479 mn_now = get_clock ();
2207 now_floor = mn_now; 2480 now_floor = mn_now;
… …
2230 mn_now = ev_rt_now; 2503 mn_now = ev_rt_now;
2231 } 2504 }
2232} 2505}
2233 2506
2234void 2507void
2235ev_loop (EV_P_ int flags) 2508ev_run (EV_P_ int flags)
2236{ 2509{
2237#if EV_MINIMAL < 2 2510#if EV_FEATURE_API
2238 ++loop_depth; 2511 ++loop_depth;
2239#endif 2512#endif
2240 2513
2241 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2514 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2242 2515
2243 loop_done = EVUNLOOP_CANCEL; 2516 loop_done = EVBREAK_CANCEL;
2244 2517
2245 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2518 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2246 2519
2247 do 2520 do
2248 { 2521 {
2249#if EV_VERIFY >= 2 2522#if EV_VERIFY >= 2
2250 ev_loop_verify (EV_A); 2523 ev_verify (EV_A);
2251#endif 2524#endif
2252 2525
2253#ifndef _WIN32 2526#ifndef _WIN32
2254 if (expect_false (curpid)) /* penalise the forking check even more */ 2527 if (expect_false (curpid)) /* penalise the forking check even more */
2255 if (expect_false (getpid () != curpid)) 2528 if (expect_false (getpid () != curpid))
… …
2267 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2540 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2268 EV_INVOKE_PENDING; 2541 EV_INVOKE_PENDING;
2269 } 2542 }
2270#endif 2543#endif
2271 2544
2545#if EV_PREPARE_ENABLE
2272 /* queue prepare watchers (and execute them) */ 2546 /* queue prepare watchers (and execute them) */
2273 if (expect_false (preparecnt)) 2547 if (expect_false (preparecnt))
2274 { 2548 {
2275 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2549 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2276 EV_INVOKE_PENDING; 2550 EV_INVOKE_PENDING;
2277 } 2551 }
2552#endif
2278 2553
2279 if (expect_false (loop_done)) 2554 if (expect_false (loop_done))
2280 break; 2555 break;
2281 2556
2282 /* we might have forked, so reify kernel state if necessary */ 2557 /* we might have forked, so reify kernel state if necessary */
… …
2289 /* calculate blocking time */ 2564 /* calculate blocking time */
2290 { 2565 {
2291 ev_tstamp waittime = 0.; 2566 ev_tstamp waittime = 0.;
2292 ev_tstamp sleeptime = 0.; 2567 ev_tstamp sleeptime = 0.;
2293 2568
2569 /* remember old timestamp for io_blocktime calculation */
2570 ev_tstamp prev_mn_now = mn_now;
2571
2572 /* update time to cancel out callback processing overhead */
2573 time_update (EV_A_ 1e100);
2574
2575 /* from now on, we want a pipe-wake-up */
2576 pipe_write_wanted = 1;
2577
2294 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2578 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2295 { 2579 {
2296 /* remember old timestamp for io_blocktime calculation */
2297 ev_tstamp prev_mn_now = mn_now;
2298
2299 /* update time to cancel out callback processing overhead */
2300 time_update (EV_A_ 1e100);
2301
2302 waittime = MAX_BLOCKTIME; 2580 waittime = MAX_BLOCKTIME;
2303 2581
2304 if (timercnt) 2582 if (timercnt)
2305 { 2583 {
2306 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2584 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2307 if (waittime > to) waittime = to; 2585 if (waittime > to) waittime = to;
2308 } 2586 }
2309 2587
2310#if EV_PERIODIC_ENABLE 2588#if EV_PERIODIC_ENABLE
2311 if (periodiccnt) 2589 if (periodiccnt)
2312 { 2590 {
2313 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2591 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2314 if (waittime > to) waittime = to; 2592 if (waittime > to) waittime = to;
2315 } 2593 }
2316#endif 2594#endif
2317 2595
2318 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2596 /* don't let timeouts decrease the waittime below timeout_blocktime */
2319 if (expect_false (waittime < timeout_blocktime)) 2597 if (expect_false (waittime < timeout_blocktime))
2320 waittime = timeout_blocktime; 2598 waittime = timeout_blocktime;
2599
2600 /* at this point, we NEED to wait, so we have to ensure */
2601 /* to pass a minimum nonzero value to the backend */
2602 if (expect_false (waittime < backend_mintime))
2603 waittime = backend_mintime;
2321 2604
2322 /* extra check because io_blocktime is commonly 0 */ 2605 /* extra check because io_blocktime is commonly 0 */
2323 if (expect_false (io_blocktime)) 2606 if (expect_false (io_blocktime))
2324 { 2607 {
2325 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2608 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2326 2609
2327 if (sleeptime > waittime - backend_fudge) 2610 if (sleeptime > waittime - backend_mintime)
2328 sleeptime = waittime - backend_fudge; 2611 sleeptime = waittime - backend_mintime;
2329 2612
2330 if (expect_true (sleeptime > 0.)) 2613 if (expect_true (sleeptime > 0.))
2331 { 2614 {
2332 ev_sleep (sleeptime); 2615 ev_sleep (sleeptime);
2333 waittime -= sleeptime; 2616 waittime -= sleeptime;
2334 } 2617 }
2335 } 2618 }
2336 } 2619 }
2337 2620
2338#if EV_MINIMAL < 2 2621#if EV_FEATURE_API
2339 ++loop_count; 2622 ++loop_count;
2340#endif 2623#endif
2341 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 2624 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2342 backend_poll (EV_A_ waittime); 2625 backend_poll (EV_A_ waittime);
2343 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 2626 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2627
2628 pipe_write_wanted = 0;
2629
2630 if (pipe_write_skipped)
2631 {
2632 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2633 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2634 }
2635
2344 2636
2345 /* update ev_rt_now, do magic */ 2637 /* update ev_rt_now, do magic */
2346 time_update (EV_A_ waittime + sleeptime); 2638 time_update (EV_A_ waittime + sleeptime);
2347 } 2639 }
2348 2640
… …
2355#if EV_IDLE_ENABLE 2647#if EV_IDLE_ENABLE
2356 /* queue idle watchers unless other events are pending */ 2648 /* queue idle watchers unless other events are pending */
2357 idle_reify (EV_A); 2649 idle_reify (EV_A);
2358#endif 2650#endif
2359 2651
2652#if EV_CHECK_ENABLE
2360 /* queue check watchers, to be executed first */ 2653 /* queue check watchers, to be executed first */
2361 if (expect_false (checkcnt)) 2654 if (expect_false (checkcnt))
2362 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2655 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2656#endif
2363 2657
2364 EV_INVOKE_PENDING; 2658 EV_INVOKE_PENDING;
2365 } 2659 }
2366 while (expect_true ( 2660 while (expect_true (
2367 activecnt 2661 activecnt
2368 && !loop_done 2662 && !loop_done
2369 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2663 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2370 )); 2664 ));
2371 2665
2372 if (loop_done == EVUNLOOP_ONE) 2666 if (loop_done == EVBREAK_ONE)
2373 loop_done = EVUNLOOP_CANCEL; 2667 loop_done = EVBREAK_CANCEL;
2374 2668
2375#if EV_MINIMAL < 2 2669#if EV_FEATURE_API
2376 --loop_depth; 2670 --loop_depth;
2377#endif 2671#endif
2378} 2672}
2379 2673
2380void 2674void
2381ev_unloop (EV_P_ int how) 2675ev_break (EV_P_ int how)
2382{ 2676{
2383 loop_done = how; 2677 loop_done = how;
2384} 2678}
2385 2679
2386void 2680void
… …
2506 2800
2507 if (expect_false (ev_is_active (w))) 2801 if (expect_false (ev_is_active (w)))
2508 return; 2802 return;
2509 2803
2510 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2804 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2511 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2805 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2512 2806
2513 EV_FREQUENT_CHECK; 2807 EV_FREQUENT_CHECK;
2514 2808
2515 ev_start (EV_A_ (W)w, 1); 2809 ev_start (EV_A_ (W)w, 1);
2516 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2810 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2534 EV_FREQUENT_CHECK; 2828 EV_FREQUENT_CHECK;
2535 2829
2536 wlist_del (&anfds[w->fd].head, (WL)w); 2830 wlist_del (&anfds[w->fd].head, (WL)w);
2537 ev_stop (EV_A_ (W)w); 2831 ev_stop (EV_A_ (W)w);
2538 2832
2539 fd_change (EV_A_ w->fd, 1); 2833 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2540 2834
2541 EV_FREQUENT_CHECK; 2835 EV_FREQUENT_CHECK;
2542} 2836}
2543 2837
2544void noinline 2838void noinline
… …
2586 timers [active] = timers [timercnt + HEAP0]; 2880 timers [active] = timers [timercnt + HEAP0];
2587 adjustheap (timers, timercnt, active); 2881 adjustheap (timers, timercnt, active);
2588 } 2882 }
2589 } 2883 }
2590 2884
2591 EV_FREQUENT_CHECK;
2592
2593 ev_at (w) -= mn_now; 2885 ev_at (w) -= mn_now;
2594 2886
2595 ev_stop (EV_A_ (W)w); 2887 ev_stop (EV_A_ (W)w);
2888
2889 EV_FREQUENT_CHECK;
2596} 2890}
2597 2891
2598void noinline 2892void noinline
2599ev_timer_again (EV_P_ ev_timer *w) 2893ev_timer_again (EV_P_ ev_timer *w)
2600{ 2894{
… …
2636 if (w->reschedule_cb) 2930 if (w->reschedule_cb)
2637 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2931 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2638 else if (w->interval) 2932 else if (w->interval)
2639 { 2933 {
2640 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2934 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2641 /* this formula differs from the one in periodic_reify because we do not always round up */ 2935 periodic_recalc (EV_A_ w);
2642 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2643 } 2936 }
2644 else 2937 else
2645 ev_at (w) = w->offset; 2938 ev_at (w) = w->offset;
2646 2939
2647 EV_FREQUENT_CHECK; 2940 EV_FREQUENT_CHECK;
… …
2679 periodics [active] = periodics [periodiccnt + HEAP0]; 2972 periodics [active] = periodics [periodiccnt + HEAP0];
2680 adjustheap (periodics, periodiccnt, active); 2973 adjustheap (periodics, periodiccnt, active);
2681 } 2974 }
2682 } 2975 }
2683 2976
2684 EV_FREQUENT_CHECK;
2685
2686 ev_stop (EV_A_ (W)w); 2977 ev_stop (EV_A_ (W)w);
2978
2979 EV_FREQUENT_CHECK;
2687} 2980}
2688 2981
2689void noinline 2982void noinline
2690ev_periodic_again (EV_P_ ev_periodic *w) 2983ev_periodic_again (EV_P_ ev_periodic *w)
2691{ 2984{
… …
2696#endif 2989#endif
2697 2990
2698#ifndef SA_RESTART 2991#ifndef SA_RESTART
2699# define SA_RESTART 0 2992# define SA_RESTART 0
2700#endif 2993#endif
2994
2995#if EV_SIGNAL_ENABLE
2701 2996
2702void noinline 2997void noinline
2703ev_signal_start (EV_P_ ev_signal *w) 2998ev_signal_start (EV_P_ ev_signal *w)
2704{ 2999{
2705 if (expect_false (ev_is_active (w))) 3000 if (expect_false (ev_is_active (w)))
… …
2752 if (!((WL)w)->next) 3047 if (!((WL)w)->next)
2753# if EV_USE_SIGNALFD 3048# if EV_USE_SIGNALFD
2754 if (sigfd < 0) /*TODO*/ 3049 if (sigfd < 0) /*TODO*/
2755# endif 3050# endif
2756 { 3051 {
2757# if _WIN32 3052# ifdef _WIN32
3053 evpipe_init (EV_A);
3054
2758 signal (w->signum, ev_sighandler); 3055 signal (w->signum, ev_sighandler);
2759# else 3056# else
2760 struct sigaction sa; 3057 struct sigaction sa;
2761 3058
2762 evpipe_init (EV_A); 3059 evpipe_init (EV_A);
… …
2764 sa.sa_handler = ev_sighandler; 3061 sa.sa_handler = ev_sighandler;
2765 sigfillset (&sa.sa_mask); 3062 sigfillset (&sa.sa_mask);
2766 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3063 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2767 sigaction (w->signum, &sa, 0); 3064 sigaction (w->signum, &sa, 0);
2768 3065
3066 if (origflags & EVFLAG_NOSIGMASK)
3067 {
2769 sigemptyset (&sa.sa_mask); 3068 sigemptyset (&sa.sa_mask);
2770 sigaddset (&sa.sa_mask, w->signum); 3069 sigaddset (&sa.sa_mask, w->signum);
2771 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3070 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3071 }
2772#endif 3072#endif
2773 } 3073 }
2774 3074
2775 EV_FREQUENT_CHECK; 3075 EV_FREQUENT_CHECK;
2776} 3076}
… …
2793 signals [w->signum - 1].loop = 0; /* unattach from signal */ 3093 signals [w->signum - 1].loop = 0; /* unattach from signal */
2794#endif 3094#endif
2795#if EV_USE_SIGNALFD 3095#if EV_USE_SIGNALFD
2796 if (sigfd >= 0) 3096 if (sigfd >= 0)
2797 { 3097 {
2798 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3098 sigset_t ss;
3099
3100 sigemptyset (&ss);
3101 sigaddset (&ss, w->signum);
2799 sigdelset (&sigfd_set, w->signum); 3102 sigdelset (&sigfd_set, w->signum);
3103
2800 signalfd (sigfd, &sigfd_set, 0); 3104 signalfd (sigfd, &sigfd_set, 0);
2801 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3105 sigprocmask (SIG_UNBLOCK, &ss, 0);
2802 /*TODO: maybe unblock signal? */
2803 } 3106 }
2804 else 3107 else
2805#endif 3108#endif
2806 signal (w->signum, SIG_DFL); 3109 signal (w->signum, SIG_DFL);
2807 } 3110 }
2808 3111
2809 EV_FREQUENT_CHECK; 3112 EV_FREQUENT_CHECK;
2810} 3113}
2811 3114
3115#endif
3116
3117#if EV_CHILD_ENABLE
3118
2812void 3119void
2813ev_child_start (EV_P_ ev_child *w) 3120ev_child_start (EV_P_ ev_child *w)
2814{ 3121{
2815#if EV_MULTIPLICITY 3122#if EV_MULTIPLICITY
2816 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3123 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
… …
2819 return; 3126 return;
2820 3127
2821 EV_FREQUENT_CHECK; 3128 EV_FREQUENT_CHECK;
2822 3129
2823 ev_start (EV_A_ (W)w, 1); 3130 ev_start (EV_A_ (W)w, 1);
2824 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3131 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2825 3132
2826 EV_FREQUENT_CHECK; 3133 EV_FREQUENT_CHECK;
2827} 3134}
2828 3135
2829void 3136void
… …
2833 if (expect_false (!ev_is_active (w))) 3140 if (expect_false (!ev_is_active (w)))
2834 return; 3141 return;
2835 3142
2836 EV_FREQUENT_CHECK; 3143 EV_FREQUENT_CHECK;
2837 3144
2838 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3145 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2839 ev_stop (EV_A_ (W)w); 3146 ev_stop (EV_A_ (W)w);
2840 3147
2841 EV_FREQUENT_CHECK; 3148 EV_FREQUENT_CHECK;
2842} 3149}
3150
3151#endif
2843 3152
2844#if EV_STAT_ENABLE 3153#if EV_STAT_ENABLE
2845 3154
2846# ifdef _WIN32 3155# ifdef _WIN32
2847# undef lstat 3156# undef lstat
… …
2853#define MIN_STAT_INTERVAL 0.1074891 3162#define MIN_STAT_INTERVAL 0.1074891
2854 3163
2855static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3164static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2856 3165
2857#if EV_USE_INOTIFY 3166#if EV_USE_INOTIFY
2858# define EV_INOTIFY_BUFSIZE 8192 3167
3168/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3169# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2859 3170
2860static void noinline 3171static void noinline
2861infy_add (EV_P_ ev_stat *w) 3172infy_add (EV_P_ ev_stat *w)
2862{ 3173{
2863 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3174 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2864 3175
2865 if (w->wd < 0) 3176 if (w->wd >= 0)
3177 {
3178 struct statfs sfs;
3179
3180 /* now local changes will be tracked by inotify, but remote changes won't */
3181 /* unless the filesystem is known to be local, we therefore still poll */
3182 /* also do poll on <2.6.25, but with normal frequency */
3183
3184 if (!fs_2625)
3185 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3186 else if (!statfs (w->path, &sfs)
3187 && (sfs.f_type == 0x1373 /* devfs */
3188 || sfs.f_type == 0xEF53 /* ext2/3 */
3189 || sfs.f_type == 0x3153464a /* jfs */
3190 || sfs.f_type == 0x52654973 /* reiser3 */
3191 || sfs.f_type == 0x01021994 /* tempfs */
3192 || sfs.f_type == 0x58465342 /* xfs */))
3193 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3194 else
3195 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2866 { 3196 }
3197 else
3198 {
3199 /* can't use inotify, continue to stat */
2867 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3200 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2868 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2869 3201
2870 /* monitor some parent directory for speedup hints */ 3202 /* if path is not there, monitor some parent directory for speedup hints */
2871 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3203 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2872 /* but an efficiency issue only */ 3204 /* but an efficiency issue only */
2873 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3205 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2874 { 3206 {
2875 char path [4096]; 3207 char path [4096];
… …
2885 if (!pend || pend == path) 3217 if (!pend || pend == path)
2886 break; 3218 break;
2887 3219
2888 *pend = 0; 3220 *pend = 0;
2889 w->wd = inotify_add_watch (fs_fd, path, mask); 3221 w->wd = inotify_add_watch (fs_fd, path, mask);
2890 } 3222 }
2891 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3223 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2892 } 3224 }
2893 } 3225 }
2894 3226
2895 if (w->wd >= 0) 3227 if (w->wd >= 0)
2896 {
2897 struct statfs sfs;
2898
2899 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3228 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2900 3229
2901 /* now local changes will be tracked by inotify, but remote changes won't */ 3230 /* now re-arm timer, if required */
2902 /* unless the filesystem it known to be local, we therefore still poll */ 3231 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2903 /* also do poll on <2.6.25, but with normal frequency */
2904
2905 if (fs_2625 && !statfs (w->path, &sfs))
2906 if (sfs.f_type == 0x1373 /* devfs */
2907 || sfs.f_type == 0xEF53 /* ext2/3 */
2908 || sfs.f_type == 0x3153464a /* jfs */
2909 || sfs.f_type == 0x52654973 /* reiser3 */
2910 || sfs.f_type == 0x01021994 /* tempfs */
2911 || sfs.f_type == 0x58465342 /* xfs */)
2912 return;
2913
2914 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2915 ev_timer_again (EV_A_ &w->timer); 3232 ev_timer_again (EV_A_ &w->timer);
2916 } 3233 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2917} 3234}
2918 3235
2919static void noinline 3236static void noinline
2920infy_del (EV_P_ ev_stat *w) 3237infy_del (EV_P_ ev_stat *w)
2921{ 3238{
… …
2924 3241
2925 if (wd < 0) 3242 if (wd < 0)
2926 return; 3243 return;
2927 3244
2928 w->wd = -2; 3245 w->wd = -2;
2929 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3246 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2930 wlist_del (&fs_hash [slot].head, (WL)w); 3247 wlist_del (&fs_hash [slot].head, (WL)w);
2931 3248
2932 /* remove this watcher, if others are watching it, they will rearm */ 3249 /* remove this watcher, if others are watching it, they will rearm */
2933 inotify_rm_watch (fs_fd, wd); 3250 inotify_rm_watch (fs_fd, wd);
2934} 3251}
… …
2936static void noinline 3253static void noinline
2937infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3254infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2938{ 3255{
2939 if (slot < 0) 3256 if (slot < 0)
2940 /* overflow, need to check for all hash slots */ 3257 /* overflow, need to check for all hash slots */
2941 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3258 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2942 infy_wd (EV_A_ slot, wd, ev); 3259 infy_wd (EV_A_ slot, wd, ev);
2943 else 3260 else
2944 { 3261 {
2945 WL w_; 3262 WL w_;
2946 3263
2947 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3264 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2948 { 3265 {
2949 ev_stat *w = (ev_stat *)w_; 3266 ev_stat *w = (ev_stat *)w_;
2950 w_ = w_->next; /* lets us remove this watcher and all before it */ 3267 w_ = w_->next; /* lets us remove this watcher and all before it */
2951 3268
2952 if (w->wd == wd || wd == -1) 3269 if (w->wd == wd || wd == -1)
2953 { 3270 {
2954 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3271 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2955 { 3272 {
2956 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3273 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2957 w->wd = -1; 3274 w->wd = -1;
2958 infy_add (EV_A_ w); /* re-add, no matter what */ 3275 infy_add (EV_A_ w); /* re-add, no matter what */
2959 } 3276 }
2960 3277
2961 stat_timer_cb (EV_A_ &w->timer, 0); 3278 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2966 3283
2967static void 3284static void
2968infy_cb (EV_P_ ev_io *w, int revents) 3285infy_cb (EV_P_ ev_io *w, int revents)
2969{ 3286{
2970 char buf [EV_INOTIFY_BUFSIZE]; 3287 char buf [EV_INOTIFY_BUFSIZE];
2971 struct inotify_event *ev = (struct inotify_event *)buf;
2972 int ofs; 3288 int ofs;
2973 int len = read (fs_fd, buf, sizeof (buf)); 3289 int len = read (fs_fd, buf, sizeof (buf));
2974 3290
2975 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3291 for (ofs = 0; ofs < len; )
3292 {
3293 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2976 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3294 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3295 ofs += sizeof (struct inotify_event) + ev->len;
3296 }
2977} 3297}
2978 3298
2979inline_size void 3299inline_size void ecb_cold
2980check_2625 (EV_P) 3300ev_check_2625 (EV_P)
2981{ 3301{
2982 /* kernels < 2.6.25 are borked 3302 /* kernels < 2.6.25 are borked
2983 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3303 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2984 */ 3304 */
2985 struct utsname buf; 3305 if (ev_linux_version () < 0x020619)
2986 int major, minor, micro;
2987
2988 if (uname (&buf))
2989 return; 3306 return;
2990 3307
2991 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2992 return;
2993
2994 if (major < 2
2995 || (major == 2 && minor < 6)
2996 || (major == 2 && minor == 6 && micro < 25))
2997 return;
2998
2999 fs_2625 = 1; 3308 fs_2625 = 1;
3309}
3310
3311inline_size int
3312infy_newfd (void)
3313{
3314#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3315 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3316 if (fd >= 0)
3317 return fd;
3318#endif
3319 return inotify_init ();
3000} 3320}
3001 3321
3002inline_size void 3322inline_size void
3003infy_init (EV_P) 3323infy_init (EV_P)
3004{ 3324{
3005 if (fs_fd != -2) 3325 if (fs_fd != -2)
3006 return; 3326 return;
3007 3327
3008 fs_fd = -1; 3328 fs_fd = -1;
3009 3329
3010 check_2625 (EV_A); 3330 ev_check_2625 (EV_A);
3011 3331
3012 fs_fd = inotify_init (); 3332 fs_fd = infy_newfd ();
3013 3333
3014 if (fs_fd >= 0) 3334 if (fs_fd >= 0)
3015 { 3335 {
3336 fd_intern (fs_fd);
3016 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3337 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
3017 ev_set_priority (&fs_w, EV_MAXPRI); 3338 ev_set_priority (&fs_w, EV_MAXPRI);
3018 ev_io_start (EV_A_ &fs_w); 3339 ev_io_start (EV_A_ &fs_w);
3340 ev_unref (EV_A);
3019 } 3341 }
3020} 3342}
3021 3343
3022inline_size void 3344inline_size void
3023infy_fork (EV_P) 3345infy_fork (EV_P)
… …
3025 int slot; 3347 int slot;
3026 3348
3027 if (fs_fd < 0) 3349 if (fs_fd < 0)
3028 return; 3350 return;
3029 3351
3352 ev_ref (EV_A);
3353 ev_io_stop (EV_A_ &fs_w);
3030 close (fs_fd); 3354 close (fs_fd);
3031 fs_fd = inotify_init (); 3355 fs_fd = infy_newfd ();
3032 3356
3357 if (fs_fd >= 0)
3358 {
3359 fd_intern (fs_fd);
3360 ev_io_set (&fs_w, fs_fd, EV_READ);
3361 ev_io_start (EV_A_ &fs_w);
3362 ev_unref (EV_A);
3363 }
3364
3033 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3365 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3034 { 3366 {
3035 WL w_ = fs_hash [slot].head; 3367 WL w_ = fs_hash [slot].head;
3036 fs_hash [slot].head = 0; 3368 fs_hash [slot].head = 0;
3037 3369
3038 while (w_) 3370 while (w_)
… …
3043 w->wd = -1; 3375 w->wd = -1;
3044 3376
3045 if (fs_fd >= 0) 3377 if (fs_fd >= 0)
3046 infy_add (EV_A_ w); /* re-add, no matter what */ 3378 infy_add (EV_A_ w); /* re-add, no matter what */
3047 else 3379 else
3380 {
3381 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3382 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3048 ev_timer_again (EV_A_ &w->timer); 3383 ev_timer_again (EV_A_ &w->timer);
3384 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3385 }
3049 } 3386 }
3050 } 3387 }
3051} 3388}
3052 3389
3053#endif 3390#endif
… …
3070static void noinline 3407static void noinline
3071stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3408stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3072{ 3409{
3073 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3410 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3074 3411
3075 /* we copy this here each the time so that */ 3412 ev_statdata prev = w->attr;
3076 /* prev has the old value when the callback gets invoked */
3077 w->prev = w->attr;
3078 ev_stat_stat (EV_A_ w); 3413 ev_stat_stat (EV_A_ w);
3079 3414
3080 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3415 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3081 if ( 3416 if (
3082 w->prev.st_dev != w->attr.st_dev 3417 prev.st_dev != w->attr.st_dev
3083 || w->prev.st_ino != w->attr.st_ino 3418 || prev.st_ino != w->attr.st_ino
3084 || w->prev.st_mode != w->attr.st_mode 3419 || prev.st_mode != w->attr.st_mode
3085 || w->prev.st_nlink != w->attr.st_nlink 3420 || prev.st_nlink != w->attr.st_nlink
3086 || w->prev.st_uid != w->attr.st_uid 3421 || prev.st_uid != w->attr.st_uid
3087 || w->prev.st_gid != w->attr.st_gid 3422 || prev.st_gid != w->attr.st_gid
3088 || w->prev.st_rdev != w->attr.st_rdev 3423 || prev.st_rdev != w->attr.st_rdev
3089 || w->prev.st_size != w->attr.st_size 3424 || prev.st_size != w->attr.st_size
3090 || w->prev.st_atime != w->attr.st_atime 3425 || prev.st_atime != w->attr.st_atime
3091 || w->prev.st_mtime != w->attr.st_mtime 3426 || prev.st_mtime != w->attr.st_mtime
3092 || w->prev.st_ctime != w->attr.st_ctime 3427 || prev.st_ctime != w->attr.st_ctime
3093 ) { 3428 ) {
3429 /* we only update w->prev on actual differences */
3430 /* in case we test more often than invoke the callback, */
3431 /* to ensure that prev is always different to attr */
3432 w->prev = prev;
3433
3094 #if EV_USE_INOTIFY 3434 #if EV_USE_INOTIFY
3095 if (fs_fd >= 0) 3435 if (fs_fd >= 0)
3096 { 3436 {
3097 infy_del (EV_A_ w); 3437 infy_del (EV_A_ w);
3098 infy_add (EV_A_ w); 3438 infy_add (EV_A_ w);
… …
3123 3463
3124 if (fs_fd >= 0) 3464 if (fs_fd >= 0)
3125 infy_add (EV_A_ w); 3465 infy_add (EV_A_ w);
3126 else 3466 else
3127#endif 3467#endif
3468 {
3128 ev_timer_again (EV_A_ &w->timer); 3469 ev_timer_again (EV_A_ &w->timer);
3470 ev_unref (EV_A);
3471 }
3129 3472
3130 ev_start (EV_A_ (W)w, 1); 3473 ev_start (EV_A_ (W)w, 1);
3131 3474
3132 EV_FREQUENT_CHECK; 3475 EV_FREQUENT_CHECK;
3133} 3476}
… …
3142 EV_FREQUENT_CHECK; 3485 EV_FREQUENT_CHECK;
3143 3486
3144#if EV_USE_INOTIFY 3487#if EV_USE_INOTIFY
3145 infy_del (EV_A_ w); 3488 infy_del (EV_A_ w);
3146#endif 3489#endif
3490
3491 if (ev_is_active (&w->timer))
3492 {
3493 ev_ref (EV_A);
3147 ev_timer_stop (EV_A_ &w->timer); 3494 ev_timer_stop (EV_A_ &w->timer);
3495 }
3148 3496
3149 ev_stop (EV_A_ (W)w); 3497 ev_stop (EV_A_ (W)w);
3150 3498
3151 EV_FREQUENT_CHECK; 3499 EV_FREQUENT_CHECK;
3152} 3500}
… …
3197 3545
3198 EV_FREQUENT_CHECK; 3546 EV_FREQUENT_CHECK;
3199} 3547}
3200#endif 3548#endif
3201 3549
3550#if EV_PREPARE_ENABLE
3202void 3551void
3203ev_prepare_start (EV_P_ ev_prepare *w) 3552ev_prepare_start (EV_P_ ev_prepare *w)
3204{ 3553{
3205 if (expect_false (ev_is_active (w))) 3554 if (expect_false (ev_is_active (w)))
3206 return; 3555 return;
… …
3232 3581
3233 ev_stop (EV_A_ (W)w); 3582 ev_stop (EV_A_ (W)w);
3234 3583
3235 EV_FREQUENT_CHECK; 3584 EV_FREQUENT_CHECK;
3236} 3585}
3586#endif
3237 3587
3588#if EV_CHECK_ENABLE
3238void 3589void
3239ev_check_start (EV_P_ ev_check *w) 3590ev_check_start (EV_P_ ev_check *w)
3240{ 3591{
3241 if (expect_false (ev_is_active (w))) 3592 if (expect_false (ev_is_active (w)))
3242 return; 3593 return;
… …
3268 3619
3269 ev_stop (EV_A_ (W)w); 3620 ev_stop (EV_A_ (W)w);
3270 3621
3271 EV_FREQUENT_CHECK; 3622 EV_FREQUENT_CHECK;
3272} 3623}
3624#endif
3273 3625
3274#if EV_EMBED_ENABLE 3626#if EV_EMBED_ENABLE
3275void noinline 3627void noinline
3276ev_embed_sweep (EV_P_ ev_embed *w) 3628ev_embed_sweep (EV_P_ ev_embed *w)
3277{ 3629{
3278 ev_loop (w->other, EVLOOP_NONBLOCK); 3630 ev_run (w->other, EVRUN_NOWAIT);
3279} 3631}
3280 3632
3281static void 3633static void
3282embed_io_cb (EV_P_ ev_io *io, int revents) 3634embed_io_cb (EV_P_ ev_io *io, int revents)
3283{ 3635{
3284 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3636 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3285 3637
3286 if (ev_cb (w)) 3638 if (ev_cb (w))
3287 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3639 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3288 else 3640 else
3289 ev_loop (w->other, EVLOOP_NONBLOCK); 3641 ev_run (w->other, EVRUN_NOWAIT);
3290} 3642}
3291 3643
3292static void 3644static void
3293embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3645embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3294{ 3646{
… …
3298 EV_P = w->other; 3650 EV_P = w->other;
3299 3651
3300 while (fdchangecnt) 3652 while (fdchangecnt)
3301 { 3653 {
3302 fd_reify (EV_A); 3654 fd_reify (EV_A);
3303 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3655 ev_run (EV_A_ EVRUN_NOWAIT);
3304 } 3656 }
3305 } 3657 }
3306} 3658}
3307 3659
3308static void 3660static void
… …
3314 3666
3315 { 3667 {
3316 EV_P = w->other; 3668 EV_P = w->other;
3317 3669
3318 ev_loop_fork (EV_A); 3670 ev_loop_fork (EV_A);
3319 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3671 ev_run (EV_A_ EVRUN_NOWAIT);
3320 } 3672 }
3321 3673
3322 ev_embed_start (EV_A_ w); 3674 ev_embed_start (EV_A_ w);
3323} 3675}
3324 3676
… …
3372 3724
3373 ev_io_stop (EV_A_ &w->io); 3725 ev_io_stop (EV_A_ &w->io);
3374 ev_prepare_stop (EV_A_ &w->prepare); 3726 ev_prepare_stop (EV_A_ &w->prepare);
3375 ev_fork_stop (EV_A_ &w->fork); 3727 ev_fork_stop (EV_A_ &w->fork);
3376 3728
3729 ev_stop (EV_A_ (W)w);
3730
3377 EV_FREQUENT_CHECK; 3731 EV_FREQUENT_CHECK;
3378} 3732}
3379#endif 3733#endif
3380 3734
3381#if EV_FORK_ENABLE 3735#if EV_FORK_ENABLE
… …
3414 3768
3415 EV_FREQUENT_CHECK; 3769 EV_FREQUENT_CHECK;
3416} 3770}
3417#endif 3771#endif
3418 3772
3773#if EV_CLEANUP_ENABLE
3774void
3775ev_cleanup_start (EV_P_ ev_cleanup *w)
3776{
3777 if (expect_false (ev_is_active (w)))
3778 return;
3779
3780 EV_FREQUENT_CHECK;
3781
3782 ev_start (EV_A_ (W)w, ++cleanupcnt);
3783 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3784 cleanups [cleanupcnt - 1] = w;
3785
3786 /* cleanup watchers should never keep a refcount on the loop */
3787 ev_unref (EV_A);
3788 EV_FREQUENT_CHECK;
3789}
3790
3791void
3792ev_cleanup_stop (EV_P_ ev_cleanup *w)
3793{
3794 clear_pending (EV_A_ (W)w);
3795 if (expect_false (!ev_is_active (w)))
3796 return;
3797
3798 EV_FREQUENT_CHECK;
3799 ev_ref (EV_A);
3800
3801 {
3802 int active = ev_active (w);
3803
3804 cleanups [active - 1] = cleanups [--cleanupcnt];
3805 ev_active (cleanups [active - 1]) = active;
3806 }
3807
3808 ev_stop (EV_A_ (W)w);
3809
3810 EV_FREQUENT_CHECK;
3811}
3812#endif
3813
3419#if EV_ASYNC_ENABLE 3814#if EV_ASYNC_ENABLE
3420void 3815void
3421ev_async_start (EV_P_ ev_async *w) 3816ev_async_start (EV_P_ ev_async *w)
3422{ 3817{
3423 if (expect_false (ev_is_active (w))) 3818 if (expect_false (ev_is_active (w)))
3424 return; 3819 return;
3820
3821 w->sent = 0;
3425 3822
3426 evpipe_init (EV_A); 3823 evpipe_init (EV_A);
3427 3824
3428 EV_FREQUENT_CHECK; 3825 EV_FREQUENT_CHECK;
3429 3826
… …
3507{ 3904{
3508 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3905 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3509 3906
3510 if (expect_false (!once)) 3907 if (expect_false (!once))
3511 { 3908 {
3512 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3909 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3513 return; 3910 return;
3514 } 3911 }
3515 3912
3516 once->cb = cb; 3913 once->cb = cb;
3517 once->arg = arg; 3914 once->arg = arg;
… …
3532} 3929}
3533 3930
3534/*****************************************************************************/ 3931/*****************************************************************************/
3535 3932
3536#if EV_WALK_ENABLE 3933#if EV_WALK_ENABLE
3537void 3934void ecb_cold
3538ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 3935ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3539{ 3936{
3540 int i, j; 3937 int i, j;
3541 ev_watcher_list *wl, *wn; 3938 ev_watcher_list *wl, *wn;
3542 3939
… …
3604 if (types & EV_ASYNC) 4001 if (types & EV_ASYNC)
3605 for (i = asynccnt; i--; ) 4002 for (i = asynccnt; i--; )
3606 cb (EV_A_ EV_ASYNC, asyncs [i]); 4003 cb (EV_A_ EV_ASYNC, asyncs [i]);
3607#endif 4004#endif
3608 4005
4006#if EV_PREPARE_ENABLE
3609 if (types & EV_PREPARE) 4007 if (types & EV_PREPARE)
3610 for (i = preparecnt; i--; ) 4008 for (i = preparecnt; i--; )
3611#if EV_EMBED_ENABLE 4009# if EV_EMBED_ENABLE
3612 if (ev_cb (prepares [i]) != embed_prepare_cb) 4010 if (ev_cb (prepares [i]) != embed_prepare_cb)
3613#endif 4011# endif
3614 cb (EV_A_ EV_PREPARE, prepares [i]); 4012 cb (EV_A_ EV_PREPARE, prepares [i]);
4013#endif
3615 4014
4015#if EV_CHECK_ENABLE
3616 if (types & EV_CHECK) 4016 if (types & EV_CHECK)
3617 for (i = checkcnt; i--; ) 4017 for (i = checkcnt; i--; )
3618 cb (EV_A_ EV_CHECK, checks [i]); 4018 cb (EV_A_ EV_CHECK, checks [i]);
4019#endif
3619 4020
4021#if EV_SIGNAL_ENABLE
3620 if (types & EV_SIGNAL) 4022 if (types & EV_SIGNAL)
3621 for (i = 0; i < EV_NSIG - 1; ++i) 4023 for (i = 0; i < EV_NSIG - 1; ++i)
3622 for (wl = signals [i].head; wl; ) 4024 for (wl = signals [i].head; wl; )
3623 { 4025 {
3624 wn = wl->next; 4026 wn = wl->next;
3625 cb (EV_A_ EV_SIGNAL, wl); 4027 cb (EV_A_ EV_SIGNAL, wl);
3626 wl = wn; 4028 wl = wn;
3627 } 4029 }
4030#endif
3628 4031
4032#if EV_CHILD_ENABLE
3629 if (types & EV_CHILD) 4033 if (types & EV_CHILD)
3630 for (i = EV_PID_HASHSIZE; i--; ) 4034 for (i = (EV_PID_HASHSIZE); i--; )
3631 for (wl = childs [i]; wl; ) 4035 for (wl = childs [i]; wl; )
3632 { 4036 {
3633 wn = wl->next; 4037 wn = wl->next;
3634 cb (EV_A_ EV_CHILD, wl); 4038 cb (EV_A_ EV_CHILD, wl);
3635 wl = wn; 4039 wl = wn;
3636 } 4040 }
4041#endif
3637/* EV_STAT 0x00001000 /* stat data changed */ 4042/* EV_STAT 0x00001000 /* stat data changed */
3638/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4043/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3639} 4044}
3640#endif 4045#endif
3641 4046
3642#if EV_MULTIPLICITY 4047#if EV_MULTIPLICITY
3643 #include "ev_wrap.h" 4048 #include "ev_wrap.h"
3644#endif 4049#endif
3645 4050
3646#ifdef __cplusplus 4051EV_CPP(})
3647}
3648#endif
3649 4052

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