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Comparing libev/ev.c (file contents):
Revision 1.304 by root, Sun Jul 19 03:12:28 2009 UTC vs.
Revision 1.384 by root, Wed Jul 20 00:58:45 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 */
213
214/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG)
216/* use what's provided */
217#elif defined (NSIG)
218# define EV_NSIG (NSIG)
219#elif defined(_NSIG)
220# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX)
222# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX)
224# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX)
226# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG)
228# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG)
230# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE)
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig)
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else
236# error "unable to find value for NSIG, please report"
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif
241
242#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0
244#endif
190 245
191#ifndef EV_USE_CLOCK_SYSCALL 246#ifndef EV_USE_CLOCK_SYSCALL
192# if __linux && __GLIBC__ >= 2 247# if __linux && __GLIBC__ >= 2
193# define EV_USE_CLOCK_SYSCALL 1 248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
194# else 249# else
195# define EV_USE_CLOCK_SYSCALL 0 250# define EV_USE_CLOCK_SYSCALL 0
196# endif 251# endif
197#endif 252#endif
198 253
199#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
200# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
201# define EV_USE_MONOTONIC 1 256# define EV_USE_MONOTONIC EV_FEATURE_OS
202# else 257# else
203# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
204# endif 259# endif
205#endif 260#endif
206 261
… …
208# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
209#endif 264#endif
210 265
211#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
212# if _POSIX_C_SOURCE >= 199309L 267# if _POSIX_C_SOURCE >= 199309L
213# define EV_USE_NANOSLEEP 1 268# define EV_USE_NANOSLEEP EV_FEATURE_OS
214# else 269# else
215# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
216# endif 271# endif
217#endif 272#endif
218 273
219#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
220# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
221#endif 276#endif
222 277
223#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
224# ifdef _WIN32 279# ifdef _WIN32
225# define EV_USE_POLL 0 280# define EV_USE_POLL 0
226# else 281# else
227# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
228# endif 283# endif
229#endif 284#endif
230 285
231#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
232# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
233# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
234# else 289# else
235# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
236# endif 291# endif
237#endif 292#endif
238 293
… …
244# define EV_USE_PORT 0 299# define EV_USE_PORT 0
245#endif 300#endif
246 301
247#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
248# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
249# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
250# else 305# else
251# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
252# endif 307# endif
253#endif 308#endif
254 309
255#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
256# if EV_MINIMAL 311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_PID_HASHSIZE 1
258# else
259# define EV_PID_HASHSIZE 16
260# endif
261#endif 312#endif
262 313
263#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
264# if EV_MINIMAL 315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
265# define EV_INOTIFY_HASHSIZE 1
266# else
267# define EV_INOTIFY_HASHSIZE 16
268# endif
269#endif 316#endif
270 317
271#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
272# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
273# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
274# else 321# else
275# define EV_USE_EVENTFD 0 322# define EV_USE_EVENTFD 0
276# endif 323# endif
277#endif 324#endif
278 325
279#ifndef EV_USE_SIGNALFD 326#ifndef EV_USE_SIGNALFD
280# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) 327# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
281# define EV_USE_SIGNALFD 1 328# define EV_USE_SIGNALFD EV_FEATURE_OS
282# else 329# else
283# define EV_USE_SIGNALFD 0 330# define EV_USE_SIGNALFD 0
284# endif 331# endif
285#endif 332#endif
286 333
… …
289# define EV_USE_4HEAP 1 336# define EV_USE_4HEAP 1
290# define EV_HEAP_CACHE_AT 1 337# define EV_HEAP_CACHE_AT 1
291#endif 338#endif
292 339
293#ifndef EV_VERIFY 340#ifndef EV_VERIFY
294# define EV_VERIFY !EV_MINIMAL 341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
295#endif 342#endif
296 343
297#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
298# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
299#endif 346#endif
300 347
301#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
302# define EV_HEAP_CACHE_AT !EV_MINIMAL 349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
303#endif 350#endif
304 351
305/* 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, */
306/* which makes programs even slower. might work on other unices, too. */ 353/* which makes programs even slower. might work on other unices, too. */
307#if EV_USE_CLOCK_SYSCALL 354#if EV_USE_CLOCK_SYSCALL
… …
316# endif 363# endif
317#endif 364#endif
318 365
319/* 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 */
320 367
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
321#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
322# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
323# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
324#endif 377#endif
325 378
… …
332# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
334#endif 387#endif
335 388
336#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
337# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
338# include <sys/select.h> 392# include <sys/select.h>
339# endif 393# endif
340#endif 394#endif
341 395
342#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
343# include <sys/utsname.h>
344# include <sys/statfs.h> 397# include <sys/statfs.h>
345# include <sys/inotify.h> 398# include <sys/inotify.h>
346/* 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 */
347# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
348# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
… …
359# include <stdint.h> 412# include <stdint.h>
360# ifndef EFD_NONBLOCK 413# ifndef EFD_NONBLOCK
361# define EFD_NONBLOCK O_NONBLOCK 414# define EFD_NONBLOCK O_NONBLOCK
362# endif 415# endif
363# ifndef EFD_CLOEXEC 416# ifndef EFD_CLOEXEC
417# ifdef O_CLOEXEC
364# define EFD_CLOEXEC O_CLOEXEC 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
365# endif 422# endif
366# ifdef __cplusplus 423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
367extern "C" { 424#endif
425
426#if EV_USE_SIGNALFD
427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
428# include <stdint.h>
429# ifndef SFD_NONBLOCK
430# define SFD_NONBLOCK O_NONBLOCK
368# endif 431# endif
369int eventfd (unsigned int initval, int flags); 432# ifndef SFD_CLOEXEC
370# ifdef __cplusplus 433# ifdef O_CLOEXEC
371} 434# define SFD_CLOEXEC O_CLOEXEC
435# else
436# define SFD_CLOEXEC 02000000
437# endif
372# endif 438# endif
373#endif 439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
374 440
375#if EV_USE_SIGNALFD 441struct signalfd_siginfo
376# include <sys/signalfd.h> 442{
443 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)];
445};
377#endif 446#endif
378 447
379/**/ 448/**/
380 449
381#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
382# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
383#else 452#else
384# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
385#endif 454#endif
386 455
387/* 456/*
388 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
389 * It is added to ev_rt_now when scheduling periodics
390 * to ensure progress, time-wise, even when rounding
391 * errors are against us.
392 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
393 * Better solutions welcome.
394 */ 459 */
395#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 */
396 462
397#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) */
398#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) */
399/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
400 465
401#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)
402# 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)
403# 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
404#else 493#else
405# define expect(expr,value) (expr) 494 #define ecb_inline static
406# define noinline
407# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
408# define inline
409# endif 495#endif
496
497#ifndef ECB_MEMORY_FENCE
498 #if ECB_GCC_VERSION(2,5)
499 #if __x86
500 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
501 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
502 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE /* better be safe than sorry */
503 #elif __amd64
504 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
505 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
506 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence")
507 #endif
410#endif 508 #endif
509#endif
411 510
511#ifndef ECB_MEMORY_FENCE
512 #if ECB_GCC_VERSION(4,4)
513 #define ECB_MEMORY_FENCE __sync_synchronize ()
514 #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); })
515 #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); })
516 #elif _MSC_VER >= 1400
517 #define ECB_MEMORY_FENCE do { } while (0)
518 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
519 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
520 #elif defined(_WIN32) && defined(MemoryBarrier)
521 #define ECB_MEMORY_FENCE MemoryBarrier ()
522 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
523 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
524 #endif
525#endif
526
527#ifndef ECB_MEMORY_FENCE
528 #include <pthread.h>
529
530 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
531 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
532 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
533 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
534#endif
535
536#if ECB_GCC_VERSION(3,1)
537 #define ecb_attribute(attrlist) __attribute__(attrlist)
538 #define ecb_is_constant(expr) __builtin_constant_p (expr)
539 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
540 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
541#else
542 #define ecb_attribute(attrlist)
543 #define ecb_is_constant(expr) 0
544 #define ecb_expect(expr,value) (expr)
545 #define ecb_prefetch(addr,rw,locality)
546#endif
547
548#define ecb_noinline ecb_attribute ((__noinline__))
549#define ecb_noreturn ecb_attribute ((__noreturn__))
550#define ecb_unused ecb_attribute ((__unused__))
551#define ecb_const ecb_attribute ((__const__))
552#define ecb_pure ecb_attribute ((__pure__))
553
554#if ECB_GCC_VERSION(4,3)
555 #define ecb_artificial ecb_attribute ((__artificial__))
556 #define ecb_hot ecb_attribute ((__hot__))
557 #define ecb_cold ecb_attribute ((__cold__))
558#else
559 #define ecb_artificial
560 #define ecb_hot
561 #define ecb_cold
562#endif
563
564/* put around conditional expressions if you are very sure that the */
565/* expression is mostly true or mostly false. note that these return */
566/* booleans, not the expression. */
412#define expect_false(expr) expect ((expr) != 0, 0) 567#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
413#define expect_true(expr) expect ((expr) != 0, 1) 568#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
569/* ecb.h end */
570
571#define expect_false(cond) ecb_expect_false (cond)
572#define expect_true(cond) ecb_expect_true (cond)
573#define noinline ecb_noinline
574
414#define inline_size static inline 575#define inline_size ecb_inline
415 576
416#if EV_MINIMAL 577#if EV_FEATURE_CODE
578# define inline_speed ecb_inline
579#else
417# define inline_speed static noinline 580# define inline_speed static noinline
418#else
419# define inline_speed static inline
420#endif 581#endif
421 582
422#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 583#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
423 584
424#if EV_MINPRI == EV_MAXPRI 585#if EV_MINPRI == EV_MAXPRI
… …
437#define ev_active(w) ((W)(w))->active 598#define ev_active(w) ((W)(w))->active
438#define ev_at(w) ((WT)(w))->at 599#define ev_at(w) ((WT)(w))->at
439 600
440#if EV_USE_REALTIME 601#if EV_USE_REALTIME
441/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 602/* sig_atomic_t is used to avoid per-thread variables or locking but still */
442/* giving it a reasonably high chance of working on typical architetcures */ 603/* giving it a reasonably high chance of working on typical architectures */
443static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 604static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
444#endif 605#endif
445 606
446#if EV_USE_MONOTONIC 607#if EV_USE_MONOTONIC
447static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 608static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
448#endif 609#endif
449 610
611#ifndef EV_FD_TO_WIN32_HANDLE
612# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
613#endif
614#ifndef EV_WIN32_HANDLE_TO_FD
615# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
616#endif
617#ifndef EV_WIN32_CLOSE_FD
618# define EV_WIN32_CLOSE_FD(fd) close (fd)
619#endif
620
450#ifdef _WIN32 621#ifdef _WIN32
451# include "ev_win32.c" 622# include "ev_win32.c"
452#endif 623#endif
453 624
454/*****************************************************************************/ 625/*****************************************************************************/
455 626
627/* define a suitable floor function (only used by periodics atm) */
628
629#if EV_USE_FLOOR
630# include <math.h>
631# define ev_floor(v) floor (v)
632#else
633
634#include <float.h>
635
636/* a floor() replacement function, should be independent of ev_tstamp type */
637static ev_tstamp noinline
638ev_floor (ev_tstamp v)
639{
640 /* the choice of shift factor is not terribly important */
641#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
642 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
643#else
644 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
645#endif
646
647 /* argument too large for an unsigned long? */
648 if (expect_false (v >= shift))
649 {
650 ev_tstamp f;
651
652 if (v == v - 1.)
653 return v; /* very large number */
654
655 f = shift * ev_floor (v * (1. / shift));
656 return f + ev_floor (v - f);
657 }
658
659 /* special treatment for negative args? */
660 if (expect_false (v < 0.))
661 {
662 ev_tstamp f = -ev_floor (-v);
663
664 return f - (f == v ? 0 : 1);
665 }
666
667 /* fits into an unsigned long */
668 return (unsigned long)v;
669}
670
671#endif
672
673/*****************************************************************************/
674
675#ifdef __linux
676# include <sys/utsname.h>
677#endif
678
679static unsigned int noinline ecb_cold
680ev_linux_version (void)
681{
682#ifdef __linux
683 unsigned int v = 0;
684 struct utsname buf;
685 int i;
686 char *p = buf.release;
687
688 if (uname (&buf))
689 return 0;
690
691 for (i = 3+1; --i; )
692 {
693 unsigned int c = 0;
694
695 for (;;)
696 {
697 if (*p >= '0' && *p <= '9')
698 c = c * 10 + *p++ - '0';
699 else
700 {
701 p += *p == '.';
702 break;
703 }
704 }
705
706 v = (v << 8) | c;
707 }
708
709 return v;
710#else
711 return 0;
712#endif
713}
714
715/*****************************************************************************/
716
717#if EV_AVOID_STDIO
718static void noinline ecb_cold
719ev_printerr (const char *msg)
720{
721 write (STDERR_FILENO, msg, strlen (msg));
722}
723#endif
724
456static void (*syserr_cb)(const char *msg); 725static void (*syserr_cb)(const char *msg);
457 726
458void 727void ecb_cold
459ev_set_syserr_cb (void (*cb)(const char *msg)) 728ev_set_syserr_cb (void (*cb)(const char *msg))
460{ 729{
461 syserr_cb = cb; 730 syserr_cb = cb;
462} 731}
463 732
464static void noinline 733static void noinline ecb_cold
465ev_syserr (const char *msg) 734ev_syserr (const char *msg)
466{ 735{
467 if (!msg) 736 if (!msg)
468 msg = "(libev) system error"; 737 msg = "(libev) system error";
469 738
470 if (syserr_cb) 739 if (syserr_cb)
471 syserr_cb (msg); 740 syserr_cb (msg);
472 else 741 else
473 { 742 {
743#if EV_AVOID_STDIO
744 ev_printerr (msg);
745 ev_printerr (": ");
746 ev_printerr (strerror (errno));
747 ev_printerr ("\n");
748#else
474 perror (msg); 749 perror (msg);
750#endif
475 abort (); 751 abort ();
476 } 752 }
477} 753}
478 754
479static void * 755static void *
480ev_realloc_emul (void *ptr, long size) 756ev_realloc_emul (void *ptr, long size)
481{ 757{
758#if __GLIBC__
759 return realloc (ptr, size);
760#else
482 /* some systems, notably openbsd and darwin, fail to properly 761 /* some systems, notably openbsd and darwin, fail to properly
483 * implement realloc (x, 0) (as required by both ansi c-98 and 762 * implement realloc (x, 0) (as required by both ansi c-89 and
484 * the single unix specification, so work around them here. 763 * the single unix specification, so work around them here.
485 */ 764 */
486 765
487 if (size) 766 if (size)
488 return realloc (ptr, size); 767 return realloc (ptr, size);
489 768
490 free (ptr); 769 free (ptr);
491 return 0; 770 return 0;
771#endif
492} 772}
493 773
494static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 774static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
495 775
496void 776void ecb_cold
497ev_set_allocator (void *(*cb)(void *ptr, long size)) 777ev_set_allocator (void *(*cb)(void *ptr, long size))
498{ 778{
499 alloc = cb; 779 alloc = cb;
500} 780}
501 781
… …
504{ 784{
505 ptr = alloc (ptr, size); 785 ptr = alloc (ptr, size);
506 786
507 if (!ptr && size) 787 if (!ptr && size)
508 { 788 {
789#if EV_AVOID_STDIO
790 ev_printerr ("(libev) memory allocation failed, aborting.\n");
791#else
509 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 792 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
793#endif
510 abort (); 794 abort ();
511 } 795 }
512 796
513 return ptr; 797 return ptr;
514} 798}
… …
530 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 814 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
531 unsigned char unused; 815 unsigned char unused;
532#if EV_USE_EPOLL 816#if EV_USE_EPOLL
533 unsigned int egen; /* generation counter to counter epoll bugs */ 817 unsigned int egen; /* generation counter to counter epoll bugs */
534#endif 818#endif
535#if EV_SELECT_IS_WINSOCKET 819#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
536 SOCKET handle; 820 SOCKET handle;
821#endif
822#if EV_USE_IOCP
823 OVERLAPPED or, ow;
537#endif 824#endif
538} ANFD; 825} ANFD;
539 826
540/* stores the pending event set for a given watcher */ 827/* stores the pending event set for a given watcher */
541typedef struct 828typedef struct
… …
596 883
597 static int ev_default_loop_ptr; 884 static int ev_default_loop_ptr;
598 885
599#endif 886#endif
600 887
601#if EV_MINIMAL < 2 888#if EV_FEATURE_API
602# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 889# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
603# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 890# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
604# define EV_INVOKE_PENDING invoke_cb (EV_A) 891# define EV_INVOKE_PENDING invoke_cb (EV_A)
605#else 892#else
606# define EV_RELEASE_CB (void)0 893# define EV_RELEASE_CB (void)0
607# define EV_ACQUIRE_CB (void)0 894# define EV_ACQUIRE_CB (void)0
608# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 895# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
609#endif 896#endif
610 897
611#define EVUNLOOP_RECURSE 0x80 898#define EVBREAK_RECURSE 0x80
612 899
613/*****************************************************************************/ 900/*****************************************************************************/
614 901
615#ifndef EV_HAVE_EV_TIME 902#ifndef EV_HAVE_EV_TIME
616ev_tstamp 903ev_tstamp
… …
660 if (delay > 0.) 947 if (delay > 0.)
661 { 948 {
662#if EV_USE_NANOSLEEP 949#if EV_USE_NANOSLEEP
663 struct timespec ts; 950 struct timespec ts;
664 951
665 ts.tv_sec = (time_t)delay; 952 EV_TS_SET (ts, delay);
666 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
667
668 nanosleep (&ts, 0); 953 nanosleep (&ts, 0);
669#elif defined(_WIN32) 954#elif defined(_WIN32)
670 Sleep ((unsigned long)(delay * 1e3)); 955 Sleep ((unsigned long)(delay * 1e3));
671#else 956#else
672 struct timeval tv; 957 struct timeval tv;
673 958
674 tv.tv_sec = (time_t)delay;
675 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
676
677 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 959 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
678 /* something not guaranteed by newer posix versions, but guaranteed */ 960 /* something not guaranteed by newer posix versions, but guaranteed */
679 /* by older ones */ 961 /* by older ones */
962 EV_TV_SET (tv, delay);
680 select (0, 0, 0, 0, &tv); 963 select (0, 0, 0, 0, &tv);
681#endif 964#endif
682 } 965 }
683} 966}
684 967
685/*****************************************************************************/ 968/*****************************************************************************/
686 969
687#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 970#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
688 971
689/* find a suitable new size for the given array, */ 972/* find a suitable new size for the given array, */
690/* hopefully by rounding to a ncie-to-malloc size */ 973/* hopefully by rounding to a nice-to-malloc size */
691inline_size int 974inline_size int
692array_nextsize (int elem, int cur, int cnt) 975array_nextsize (int elem, int cur, int cnt)
693{ 976{
694 int ncur = cur + 1; 977 int ncur = cur + 1;
695 978
… …
707 } 990 }
708 991
709 return ncur; 992 return ncur;
710} 993}
711 994
712static noinline void * 995static void * noinline ecb_cold
713array_realloc (int elem, void *base, int *cur, int cnt) 996array_realloc (int elem, void *base, int *cur, int cnt)
714{ 997{
715 *cur = array_nextsize (elem, *cur, cnt); 998 *cur = array_nextsize (elem, *cur, cnt);
716 return ev_realloc (base, elem * *cur); 999 return ev_realloc (base, elem * *cur);
717} 1000}
… …
720 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1003 memset ((void *)(base), 0, sizeof (*(base)) * (count))
721 1004
722#define array_needsize(type,base,cur,cnt,init) \ 1005#define array_needsize(type,base,cur,cnt,init) \
723 if (expect_false ((cnt) > (cur))) \ 1006 if (expect_false ((cnt) > (cur))) \
724 { \ 1007 { \
725 int ocur_ = (cur); \ 1008 int ecb_unused ocur_ = (cur); \
726 (base) = (type *)array_realloc \ 1009 (base) = (type *)array_realloc \
727 (sizeof (type), (base), &(cur), (cnt)); \ 1010 (sizeof (type), (base), &(cur), (cnt)); \
728 init ((base) + (ocur_), (cur) - ocur_); \ 1011 init ((base) + (ocur_), (cur) - ocur_); \
729 } 1012 }
730 1013
… …
791} 1074}
792 1075
793/*****************************************************************************/ 1076/*****************************************************************************/
794 1077
795inline_speed void 1078inline_speed void
796fd_event_nc (EV_P_ int fd, int revents) 1079fd_event_nocheck (EV_P_ int fd, int revents)
797{ 1080{
798 ANFD *anfd = anfds + fd; 1081 ANFD *anfd = anfds + fd;
799 ev_io *w; 1082 ev_io *w;
800 1083
801 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1084 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
813fd_event (EV_P_ int fd, int revents) 1096fd_event (EV_P_ int fd, int revents)
814{ 1097{
815 ANFD *anfd = anfds + fd; 1098 ANFD *anfd = anfds + fd;
816 1099
817 if (expect_true (!anfd->reify)) 1100 if (expect_true (!anfd->reify))
818 fd_event_nc (EV_A_ fd, revents); 1101 fd_event_nocheck (EV_A_ fd, revents);
819} 1102}
820 1103
821void 1104void
822ev_feed_fd_event (EV_P_ int fd, int revents) 1105ev_feed_fd_event (EV_P_ int fd, int revents)
823{ 1106{
824 if (fd >= 0 && fd < anfdmax) 1107 if (fd >= 0 && fd < anfdmax)
825 fd_event_nc (EV_A_ fd, revents); 1108 fd_event_nocheck (EV_A_ fd, revents);
826} 1109}
827 1110
828/* make sure the external fd watch events are in-sync */ 1111/* make sure the external fd watch events are in-sync */
829/* with the kernel/libev internal state */ 1112/* with the kernel/libev internal state */
830inline_size void 1113inline_size void
831fd_reify (EV_P) 1114fd_reify (EV_P)
832{ 1115{
833 int i; 1116 int i;
834 1117
1118#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1119 for (i = 0; i < fdchangecnt; ++i)
1120 {
1121 int fd = fdchanges [i];
1122 ANFD *anfd = anfds + fd;
1123
1124 if (anfd->reify & EV__IOFDSET && anfd->head)
1125 {
1126 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1127
1128 if (handle != anfd->handle)
1129 {
1130 unsigned long arg;
1131
1132 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1133
1134 /* handle changed, but fd didn't - we need to do it in two steps */
1135 backend_modify (EV_A_ fd, anfd->events, 0);
1136 anfd->events = 0;
1137 anfd->handle = handle;
1138 }
1139 }
1140 }
1141#endif
1142
835 for (i = 0; i < fdchangecnt; ++i) 1143 for (i = 0; i < fdchangecnt; ++i)
836 { 1144 {
837 int fd = fdchanges [i]; 1145 int fd = fdchanges [i];
838 ANFD *anfd = anfds + fd; 1146 ANFD *anfd = anfds + fd;
839 ev_io *w; 1147 ev_io *w;
840 1148
841 unsigned char events = 0; 1149 unsigned char o_events = anfd->events;
1150 unsigned char o_reify = anfd->reify;
842 1151
843 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1152 anfd->reify = 0;
844 events |= (unsigned char)w->events;
845 1153
846#if EV_SELECT_IS_WINSOCKET 1154 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
847 if (events)
848 { 1155 {
849 unsigned long arg; 1156 anfd->events = 0;
850 #ifdef EV_FD_TO_WIN32_HANDLE 1157
851 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1158 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
852 #else 1159 anfd->events |= (unsigned char)w->events;
853 anfd->handle = _get_osfhandle (fd); 1160
854 #endif 1161 if (o_events != anfd->events)
855 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1162 o_reify = EV__IOFDSET; /* actually |= */
856 } 1163 }
857#endif
858 1164
859 { 1165 if (o_reify & EV__IOFDSET)
860 unsigned char o_events = anfd->events;
861 unsigned char o_reify = anfd->reify;
862
863 anfd->reify = 0;
864 anfd->events = events;
865
866 if (o_events != events || o_reify & EV__IOFDSET)
867 backend_modify (EV_A_ fd, o_events, events); 1166 backend_modify (EV_A_ fd, o_events, anfd->events);
868 }
869 } 1167 }
870 1168
871 fdchangecnt = 0; 1169 fdchangecnt = 0;
872} 1170}
873 1171
… …
885 fdchanges [fdchangecnt - 1] = fd; 1183 fdchanges [fdchangecnt - 1] = fd;
886 } 1184 }
887} 1185}
888 1186
889/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1187/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
890inline_speed void 1188inline_speed void ecb_cold
891fd_kill (EV_P_ int fd) 1189fd_kill (EV_P_ int fd)
892{ 1190{
893 ev_io *w; 1191 ev_io *w;
894 1192
895 while ((w = (ev_io *)anfds [fd].head)) 1193 while ((w = (ev_io *)anfds [fd].head))
… …
897 ev_io_stop (EV_A_ w); 1195 ev_io_stop (EV_A_ w);
898 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1196 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
899 } 1197 }
900} 1198}
901 1199
902/* check whether the given fd is atcually valid, for error recovery */ 1200/* check whether the given fd is actually valid, for error recovery */
903inline_size int 1201inline_size int ecb_cold
904fd_valid (int fd) 1202fd_valid (int fd)
905{ 1203{
906#ifdef _WIN32 1204#ifdef _WIN32
907 return _get_osfhandle (fd) != -1; 1205 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
908#else 1206#else
909 return fcntl (fd, F_GETFD) != -1; 1207 return fcntl (fd, F_GETFD) != -1;
910#endif 1208#endif
911} 1209}
912 1210
913/* called on EBADF to verify fds */ 1211/* called on EBADF to verify fds */
914static void noinline 1212static void noinline ecb_cold
915fd_ebadf (EV_P) 1213fd_ebadf (EV_P)
916{ 1214{
917 int fd; 1215 int fd;
918 1216
919 for (fd = 0; fd < anfdmax; ++fd) 1217 for (fd = 0; fd < anfdmax; ++fd)
… …
921 if (!fd_valid (fd) && errno == EBADF) 1219 if (!fd_valid (fd) && errno == EBADF)
922 fd_kill (EV_A_ fd); 1220 fd_kill (EV_A_ fd);
923} 1221}
924 1222
925/* called on ENOMEM in select/poll to kill some fds and retry */ 1223/* called on ENOMEM in select/poll to kill some fds and retry */
926static void noinline 1224static void noinline ecb_cold
927fd_enomem (EV_P) 1225fd_enomem (EV_P)
928{ 1226{
929 int fd; 1227 int fd;
930 1228
931 for (fd = anfdmax; fd--; ) 1229 for (fd = anfdmax; fd--; )
932 if (anfds [fd].events) 1230 if (anfds [fd].events)
933 { 1231 {
934 fd_kill (EV_A_ fd); 1232 fd_kill (EV_A_ fd);
935 return; 1233 break;
936 } 1234 }
937} 1235}
938 1236
939/* usually called after fork if backend needs to re-arm all fds from scratch */ 1237/* usually called after fork if backend needs to re-arm all fds from scratch */
940static void noinline 1238static void noinline
… …
949 anfds [fd].emask = 0; 1247 anfds [fd].emask = 0;
950 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1248 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
951 } 1249 }
952} 1250}
953 1251
1252/* used to prepare libev internal fd's */
1253/* this is not fork-safe */
1254inline_speed void
1255fd_intern (int fd)
1256{
1257#ifdef _WIN32
1258 unsigned long arg = 1;
1259 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1260#else
1261 fcntl (fd, F_SETFD, FD_CLOEXEC);
1262 fcntl (fd, F_SETFL, O_NONBLOCK);
1263#endif
1264}
1265
954/*****************************************************************************/ 1266/*****************************************************************************/
955 1267
956/* 1268/*
957 * the heap functions want a real array index. array index 0 uis guaranteed to not 1269 * the heap functions want a real array index. array index 0 is guaranteed to not
958 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1270 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
959 * the branching factor of the d-tree. 1271 * the branching factor of the d-tree.
960 */ 1272 */
961 1273
962/* 1274/*
… …
1030 1342
1031 for (;;) 1343 for (;;)
1032 { 1344 {
1033 int c = k << 1; 1345 int c = k << 1;
1034 1346
1035 if (c > N + HEAP0 - 1) 1347 if (c >= N + HEAP0)
1036 break; 1348 break;
1037 1349
1038 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1350 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1039 ? 1 : 0; 1351 ? 1 : 0;
1040 1352
… …
1076 1388
1077/* move an element suitably so it is in a correct place */ 1389/* move an element suitably so it is in a correct place */
1078inline_size void 1390inline_size void
1079adjustheap (ANHE *heap, int N, int k) 1391adjustheap (ANHE *heap, int N, int k)
1080{ 1392{
1081 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1393 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1082 upheap (heap, k); 1394 upheap (heap, k);
1083 else 1395 else
1084 downheap (heap, N, k); 1396 downheap (heap, N, k);
1085} 1397}
1086 1398
… …
1099/*****************************************************************************/ 1411/*****************************************************************************/
1100 1412
1101/* associate signal watchers to a signal signal */ 1413/* associate signal watchers to a signal signal */
1102typedef struct 1414typedef struct
1103{ 1415{
1416 EV_ATOMIC_T pending;
1417#if EV_MULTIPLICITY
1418 EV_P;
1419#endif
1104 WL head; 1420 WL head;
1105 EV_ATOMIC_T gotsig;
1106} ANSIG; 1421} ANSIG;
1107 1422
1108static ANSIG *signals; 1423static ANSIG signals [EV_NSIG - 1];
1109static int signalmax;
1110
1111static EV_ATOMIC_T gotsig;
1112 1424
1113/*****************************************************************************/ 1425/*****************************************************************************/
1114 1426
1115/* used to prepare libev internal fd's */ 1427#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1116/* this is not fork-safe */
1117inline_speed void
1118fd_intern (int fd)
1119{
1120#ifdef _WIN32
1121 unsigned long arg = 1;
1122 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1123#else
1124 fcntl (fd, F_SETFD, FD_CLOEXEC);
1125 fcntl (fd, F_SETFL, O_NONBLOCK);
1126#endif
1127}
1128 1428
1129static void noinline 1429static void noinline ecb_cold
1130evpipe_init (EV_P) 1430evpipe_init (EV_P)
1131{ 1431{
1132 if (!ev_is_active (&pipe_w)) 1432 if (!ev_is_active (&pipe_w))
1133 { 1433 {
1134#if EV_USE_EVENTFD 1434# if EV_USE_EVENTFD
1135 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 1435 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1136 if (evfd < 0 && errno == EINVAL) 1436 if (evfd < 0 && errno == EINVAL)
1137 evfd = eventfd (0, 0); 1437 evfd = eventfd (0, 0);
1138 1438
1139 if (evfd >= 0) 1439 if (evfd >= 0)
… …
1141 evpipe [0] = -1; 1441 evpipe [0] = -1;
1142 fd_intern (evfd); /* doing it twice doesn't hurt */ 1442 fd_intern (evfd); /* doing it twice doesn't hurt */
1143 ev_io_set (&pipe_w, evfd, EV_READ); 1443 ev_io_set (&pipe_w, evfd, EV_READ);
1144 } 1444 }
1145 else 1445 else
1146#endif 1446# endif
1147 { 1447 {
1148 while (pipe (evpipe)) 1448 while (pipe (evpipe))
1149 ev_syserr ("(libev) error creating signal/async pipe"); 1449 ev_syserr ("(libev) error creating signal/async pipe");
1150 1450
1151 fd_intern (evpipe [0]); 1451 fd_intern (evpipe [0]);
… …
1156 ev_io_start (EV_A_ &pipe_w); 1456 ev_io_start (EV_A_ &pipe_w);
1157 ev_unref (EV_A); /* watcher should not keep loop alive */ 1457 ev_unref (EV_A); /* watcher should not keep loop alive */
1158 } 1458 }
1159} 1459}
1160 1460
1161inline_size void 1461inline_speed void
1162evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1462evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1163{ 1463{
1164 if (!*flag) 1464 if (expect_true (*flag))
1465 return;
1466
1467 *flag = 1;
1468
1469 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1470
1471 pipe_write_skipped = 1;
1472
1473 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1474
1475 if (pipe_write_wanted)
1165 { 1476 {
1477 int old_errno;
1478
1479 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1480
1166 int old_errno = errno; /* save errno because write might clobber it */ 1481 old_errno = errno; /* save errno because write will clobber it */
1167
1168 *flag = 1;
1169 1482
1170#if EV_USE_EVENTFD 1483#if EV_USE_EVENTFD
1171 if (evfd >= 0) 1484 if (evfd >= 0)
1172 { 1485 {
1173 uint64_t counter = 1; 1486 uint64_t counter = 1;
1174 write (evfd, &counter, sizeof (uint64_t)); 1487 write (evfd, &counter, sizeof (uint64_t));
1175 } 1488 }
1176 else 1489 else
1177#endif 1490#endif
1491 {
1492 /* win32 people keep sending patches that change this write() to send() */
1493 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1494 /* so when you think this write should be a send instead, please find out */
1495 /* where your send() is from - it's definitely not the microsoft send, and */
1496 /* tell me. thank you. */
1178 write (evpipe [1], &old_errno, 1); 1497 write (evpipe [1], &(evpipe [1]), 1);
1498 }
1179 1499
1180 errno = old_errno; 1500 errno = old_errno;
1181 } 1501 }
1182} 1502}
1183 1503
1184/* called whenever the libev signal pipe */ 1504/* called whenever the libev signal pipe */
1185/* got some events (signal, async) */ 1505/* got some events (signal, async) */
1186static void 1506static void
1187pipecb (EV_P_ ev_io *iow, int revents) 1507pipecb (EV_P_ ev_io *iow, int revents)
1188{ 1508{
1509 int i;
1510
1511 if (revents & EV_READ)
1512 {
1189#if EV_USE_EVENTFD 1513#if EV_USE_EVENTFD
1190 if (evfd >= 0) 1514 if (evfd >= 0)
1191 { 1515 {
1192 uint64_t counter; 1516 uint64_t counter;
1193 read (evfd, &counter, sizeof (uint64_t)); 1517 read (evfd, &counter, sizeof (uint64_t));
1194 } 1518 }
1195 else 1519 else
1196#endif 1520#endif
1197 { 1521 {
1198 char dummy; 1522 char dummy;
1523 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1199 read (evpipe [0], &dummy, 1); 1524 read (evpipe [0], &dummy, 1);
1525 }
1526 }
1527
1528 pipe_write_skipped = 0;
1529
1530#if EV_SIGNAL_ENABLE
1531 if (sig_pending)
1200 } 1532 {
1533 sig_pending = 0;
1201 1534
1202 if (gotsig && ev_is_default_loop (EV_A)) 1535 for (i = EV_NSIG - 1; i--; )
1203 { 1536 if (expect_false (signals [i].pending))
1204 int signum;
1205 gotsig = 0;
1206
1207 for (signum = signalmax; signum--; )
1208 if (signals [signum].gotsig)
1209 ev_feed_signal_event (EV_A_ signum + 1); 1537 ev_feed_signal_event (EV_A_ i + 1);
1210 } 1538 }
1539#endif
1211 1540
1212#if EV_ASYNC_ENABLE 1541#if EV_ASYNC_ENABLE
1213 if (gotasync) 1542 if (async_pending)
1214 { 1543 {
1215 int i; 1544 async_pending = 0;
1216 gotasync = 0;
1217 1545
1218 for (i = asynccnt; i--; ) 1546 for (i = asynccnt; i--; )
1219 if (asyncs [i]->sent) 1547 if (asyncs [i]->sent)
1220 { 1548 {
1221 asyncs [i]->sent = 0; 1549 asyncs [i]->sent = 0;
… …
1225#endif 1553#endif
1226} 1554}
1227 1555
1228/*****************************************************************************/ 1556/*****************************************************************************/
1229 1557
1558void
1559ev_feed_signal (int signum)
1560{
1561#if EV_MULTIPLICITY
1562 EV_P = signals [signum - 1].loop;
1563
1564 if (!EV_A)
1565 return;
1566#endif
1567
1568 if (!ev_active (&pipe_w))
1569 return;
1570
1571 signals [signum - 1].pending = 1;
1572 evpipe_write (EV_A_ &sig_pending);
1573}
1574
1230static void 1575static void
1231ev_sighandler (int signum) 1576ev_sighandler (int signum)
1232{ 1577{
1233#if EV_MULTIPLICITY
1234 struct ev_loop *loop = &default_loop_struct;
1235#endif
1236
1237#if _WIN32 1578#ifdef _WIN32
1238 signal (signum, ev_sighandler); 1579 signal (signum, ev_sighandler);
1239#endif 1580#endif
1240 1581
1241 signals [signum - 1].gotsig = 1; 1582 ev_feed_signal (signum);
1242 evpipe_write (EV_A_ &gotsig);
1243} 1583}
1244 1584
1245void noinline 1585void noinline
1246ev_feed_signal_event (EV_P_ int signum) 1586ev_feed_signal_event (EV_P_ int signum)
1247{ 1587{
1248 WL w; 1588 WL w;
1249 1589
1590 if (expect_false (signum <= 0 || signum > EV_NSIG))
1591 return;
1592
1593 --signum;
1594
1250#if EV_MULTIPLICITY 1595#if EV_MULTIPLICITY
1251 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1596 /* it is permissible to try to feed a signal to the wrong loop */
1252#endif 1597 /* or, likely more useful, feeding a signal nobody is waiting for */
1253 1598
1254 --signum; 1599 if (expect_false (signals [signum].loop != EV_A))
1255
1256 if (signum < 0 || signum >= signalmax)
1257 return; 1600 return;
1601#endif
1258 1602
1259 signals [signum].gotsig = 0; 1603 signals [signum].pending = 0;
1260 1604
1261 for (w = signals [signum].head; w; w = w->next) 1605 for (w = signals [signum].head; w; w = w->next)
1262 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1606 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1263} 1607}
1264 1608
1265#if EV_USE_SIGNALFD 1609#if EV_USE_SIGNALFD
1266static void 1610static void
1267sigfdcb (EV_P_ ev_io *iow, int revents) 1611sigfdcb (EV_P_ ev_io *iow, int revents)
1268{ 1612{
1269 struct signalfd_siginfo si[4], *sip; 1613 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1270 1614
1271 for (;;) 1615 for (;;)
1272 { 1616 {
1273 ssize_t res = read (sigfd, si, sizeof (si)); 1617 ssize_t res = read (sigfd, si, sizeof (si));
1274 1618
… …
1280 break; 1624 break;
1281 } 1625 }
1282} 1626}
1283#endif 1627#endif
1284 1628
1629#endif
1630
1285/*****************************************************************************/ 1631/*****************************************************************************/
1286 1632
1633#if EV_CHILD_ENABLE
1287static WL childs [EV_PID_HASHSIZE]; 1634static WL childs [EV_PID_HASHSIZE];
1288
1289#ifndef _WIN32
1290 1635
1291static ev_signal childev; 1636static ev_signal childev;
1292 1637
1293#ifndef WIFCONTINUED 1638#ifndef WIFCONTINUED
1294# define WIFCONTINUED(status) 0 1639# define WIFCONTINUED(status) 0
… …
1299child_reap (EV_P_ int chain, int pid, int status) 1644child_reap (EV_P_ int chain, int pid, int status)
1300{ 1645{
1301 ev_child *w; 1646 ev_child *w;
1302 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1647 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1303 1648
1304 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1649 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1305 { 1650 {
1306 if ((w->pid == pid || !w->pid) 1651 if ((w->pid == pid || !w->pid)
1307 && (!traced || (w->flags & 1))) 1652 && (!traced || (w->flags & 1)))
1308 { 1653 {
1309 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1654 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1334 /* make sure we are called again until all children have been reaped */ 1679 /* make sure we are called again until all children have been reaped */
1335 /* we need to do it this way so that the callback gets called before we continue */ 1680 /* we need to do it this way so that the callback gets called before we continue */
1336 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1681 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1337 1682
1338 child_reap (EV_A_ pid, pid, status); 1683 child_reap (EV_A_ pid, pid, status);
1339 if (EV_PID_HASHSIZE > 1) 1684 if ((EV_PID_HASHSIZE) > 1)
1340 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1685 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1341} 1686}
1342 1687
1343#endif 1688#endif
1344 1689
1345/*****************************************************************************/ 1690/*****************************************************************************/
1346 1691
1692#if EV_USE_IOCP
1693# include "ev_iocp.c"
1694#endif
1347#if EV_USE_PORT 1695#if EV_USE_PORT
1348# include "ev_port.c" 1696# include "ev_port.c"
1349#endif 1697#endif
1350#if EV_USE_KQUEUE 1698#if EV_USE_KQUEUE
1351# include "ev_kqueue.c" 1699# include "ev_kqueue.c"
… …
1358#endif 1706#endif
1359#if EV_USE_SELECT 1707#if EV_USE_SELECT
1360# include "ev_select.c" 1708# include "ev_select.c"
1361#endif 1709#endif
1362 1710
1363int 1711int ecb_cold
1364ev_version_major (void) 1712ev_version_major (void)
1365{ 1713{
1366 return EV_VERSION_MAJOR; 1714 return EV_VERSION_MAJOR;
1367} 1715}
1368 1716
1369int 1717int ecb_cold
1370ev_version_minor (void) 1718ev_version_minor (void)
1371{ 1719{
1372 return EV_VERSION_MINOR; 1720 return EV_VERSION_MINOR;
1373} 1721}
1374 1722
1375/* return true if we are running with elevated privileges and should ignore env variables */ 1723/* return true if we are running with elevated privileges and should ignore env variables */
1376int inline_size 1724int inline_size ecb_cold
1377enable_secure (void) 1725enable_secure (void)
1378{ 1726{
1379#ifdef _WIN32 1727#ifdef _WIN32
1380 return 0; 1728 return 0;
1381#else 1729#else
1382 return getuid () != geteuid () 1730 return getuid () != geteuid ()
1383 || getgid () != getegid (); 1731 || getgid () != getegid ();
1384#endif 1732#endif
1385} 1733}
1386 1734
1387unsigned int 1735unsigned int ecb_cold
1388ev_supported_backends (void) 1736ev_supported_backends (void)
1389{ 1737{
1390 unsigned int flags = 0; 1738 unsigned int flags = 0;
1391 1739
1392 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1740 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1396 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1744 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1397 1745
1398 return flags; 1746 return flags;
1399} 1747}
1400 1748
1401unsigned int 1749unsigned int ecb_cold
1402ev_recommended_backends (void) 1750ev_recommended_backends (void)
1403{ 1751{
1404 unsigned int flags = ev_supported_backends (); 1752 unsigned int flags = ev_supported_backends ();
1405 1753
1406#ifndef __NetBSD__ 1754#ifndef __NetBSD__
… …
1411#ifdef __APPLE__ 1759#ifdef __APPLE__
1412 /* only select works correctly on that "unix-certified" platform */ 1760 /* only select works correctly on that "unix-certified" platform */
1413 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1761 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1414 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1762 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1415#endif 1763#endif
1764#ifdef __FreeBSD__
1765 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1766#endif
1416 1767
1417 return flags; 1768 return flags;
1418} 1769}
1419 1770
1420unsigned int 1771unsigned int ecb_cold
1421ev_embeddable_backends (void) 1772ev_embeddable_backends (void)
1422{ 1773{
1423 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1774 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1424 1775
1425 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1776 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1426 /* please fix it and tell me how to detect the fix */ 1777 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1427 flags &= ~EVBACKEND_EPOLL; 1778 flags &= ~EVBACKEND_EPOLL;
1428 1779
1429 return flags; 1780 return flags;
1430} 1781}
1431 1782
1432unsigned int 1783unsigned int
1433ev_backend (EV_P) 1784ev_backend (EV_P)
1434{ 1785{
1435 return backend; 1786 return backend;
1436} 1787}
1437 1788
1438#if EV_MINIMAL < 2 1789#if EV_FEATURE_API
1439unsigned int 1790unsigned int
1440ev_loop_count (EV_P) 1791ev_iteration (EV_P)
1441{ 1792{
1442 return loop_count; 1793 return loop_count;
1443} 1794}
1444 1795
1445unsigned int 1796unsigned int
1446ev_loop_depth (EV_P) 1797ev_depth (EV_P)
1447{ 1798{
1448 return loop_depth; 1799 return loop_depth;
1449} 1800}
1450 1801
1451void 1802void
… …
1470ev_userdata (EV_P) 1821ev_userdata (EV_P)
1471{ 1822{
1472 return userdata; 1823 return userdata;
1473} 1824}
1474 1825
1826void
1475void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 1827ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1476{ 1828{
1477 invoke_cb = invoke_pending_cb; 1829 invoke_cb = invoke_pending_cb;
1478} 1830}
1479 1831
1832void
1480void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 1833ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1481{ 1834{
1482 release_cb = release; 1835 release_cb = release;
1483 acquire_cb = acquire; 1836 acquire_cb = acquire;
1484} 1837}
1485#endif 1838#endif
1486 1839
1487/* initialise a loop structure, must be zero-initialised */ 1840/* initialise a loop structure, must be zero-initialised */
1488static void noinline 1841static void noinline ecb_cold
1489loop_init (EV_P_ unsigned int flags) 1842loop_init (EV_P_ unsigned int flags)
1490{ 1843{
1491 if (!backend) 1844 if (!backend)
1492 { 1845 {
1846 origflags = flags;
1847
1493#if EV_USE_REALTIME 1848#if EV_USE_REALTIME
1494 if (!have_realtime) 1849 if (!have_realtime)
1495 { 1850 {
1496 struct timespec ts; 1851 struct timespec ts;
1497 1852
… …
1508 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1863 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1509 have_monotonic = 1; 1864 have_monotonic = 1;
1510 } 1865 }
1511#endif 1866#endif
1512 1867
1513 ev_rt_now = ev_time ();
1514 mn_now = get_clock ();
1515 now_floor = mn_now;
1516 rtmn_diff = ev_rt_now - mn_now;
1517#if EV_MINIMAL < 2
1518 invoke_cb = ev_invoke_pending;
1519#endif
1520
1521 io_blocktime = 0.;
1522 timeout_blocktime = 0.;
1523 backend = 0;
1524 backend_fd = -1;
1525 gotasync = 0;
1526#if EV_USE_INOTIFY
1527 fs_fd = -2;
1528#endif
1529#if EV_USE_SIGNALFD
1530 sigfd = -2;
1531#endif
1532
1533 /* pid check not overridable via env */ 1868 /* pid check not overridable via env */
1534#ifndef _WIN32 1869#ifndef _WIN32
1535 if (flags & EVFLAG_FORKCHECK) 1870 if (flags & EVFLAG_FORKCHECK)
1536 curpid = getpid (); 1871 curpid = getpid ();
1537#endif 1872#endif
… …
1539 if (!(flags & EVFLAG_NOENV) 1874 if (!(flags & EVFLAG_NOENV)
1540 && !enable_secure () 1875 && !enable_secure ()
1541 && getenv ("LIBEV_FLAGS")) 1876 && getenv ("LIBEV_FLAGS"))
1542 flags = atoi (getenv ("LIBEV_FLAGS")); 1877 flags = atoi (getenv ("LIBEV_FLAGS"));
1543 1878
1544 if (!(flags & 0x0000ffffU)) 1879 ev_rt_now = ev_time ();
1880 mn_now = get_clock ();
1881 now_floor = mn_now;
1882 rtmn_diff = ev_rt_now - mn_now;
1883#if EV_FEATURE_API
1884 invoke_cb = ev_invoke_pending;
1885#endif
1886
1887 io_blocktime = 0.;
1888 timeout_blocktime = 0.;
1889 backend = 0;
1890 backend_fd = -1;
1891 sig_pending = 0;
1892#if EV_ASYNC_ENABLE
1893 async_pending = 0;
1894#endif
1895 pipe_write_skipped = 0;
1896 pipe_write_wanted = 0;
1897#if EV_USE_INOTIFY
1898 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1899#endif
1900#if EV_USE_SIGNALFD
1901 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1902#endif
1903
1904 if (!(flags & EVBACKEND_MASK))
1545 flags |= ev_recommended_backends (); 1905 flags |= ev_recommended_backends ();
1546 1906
1907#if EV_USE_IOCP
1908 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1909#endif
1547#if EV_USE_PORT 1910#if EV_USE_PORT
1548 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1911 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1549#endif 1912#endif
1550#if EV_USE_KQUEUE 1913#if EV_USE_KQUEUE
1551 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1914 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1560 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1923 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1561#endif 1924#endif
1562 1925
1563 ev_prepare_init (&pending_w, pendingcb); 1926 ev_prepare_init (&pending_w, pendingcb);
1564 1927
1928#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1565 ev_init (&pipe_w, pipecb); 1929 ev_init (&pipe_w, pipecb);
1566 ev_set_priority (&pipe_w, EV_MAXPRI); 1930 ev_set_priority (&pipe_w, EV_MAXPRI);
1931#endif
1567 } 1932 }
1568} 1933}
1569 1934
1570/* free up a loop structure */ 1935/* free up a loop structure */
1571static void noinline 1936void ecb_cold
1572loop_destroy (EV_P) 1937ev_loop_destroy (EV_P)
1573{ 1938{
1574 int i; 1939 int i;
1940
1941#if EV_MULTIPLICITY
1942 /* mimic free (0) */
1943 if (!EV_A)
1944 return;
1945#endif
1946
1947#if EV_CLEANUP_ENABLE
1948 /* queue cleanup watchers (and execute them) */
1949 if (expect_false (cleanupcnt))
1950 {
1951 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1952 EV_INVOKE_PENDING;
1953 }
1954#endif
1955
1956#if EV_CHILD_ENABLE
1957 if (ev_is_active (&childev))
1958 {
1959 ev_ref (EV_A); /* child watcher */
1960 ev_signal_stop (EV_A_ &childev);
1961 }
1962#endif
1575 1963
1576 if (ev_is_active (&pipe_w)) 1964 if (ev_is_active (&pipe_w))
1577 { 1965 {
1578 /*ev_ref (EV_A);*/ 1966 /*ev_ref (EV_A);*/
1579 /*ev_io_stop (EV_A_ &pipe_w);*/ 1967 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1583 close (evfd); 1971 close (evfd);
1584#endif 1972#endif
1585 1973
1586 if (evpipe [0] >= 0) 1974 if (evpipe [0] >= 0)
1587 { 1975 {
1588 close (evpipe [0]); 1976 EV_WIN32_CLOSE_FD (evpipe [0]);
1589 close (evpipe [1]); 1977 EV_WIN32_CLOSE_FD (evpipe [1]);
1590 } 1978 }
1591 } 1979 }
1592 1980
1593#if EV_USE_SIGNALFD 1981#if EV_USE_SIGNALFD
1594 if (ev_is_active (&sigfd_w)) 1982 if (ev_is_active (&sigfd_w))
1595 {
1596 /*ev_ref (EV_A);*/
1597 /*ev_io_stop (EV_A_ &sigfd_w);*/
1598
1599 close (sigfd); 1983 close (sigfd);
1600 }
1601#endif 1984#endif
1602 1985
1603#if EV_USE_INOTIFY 1986#if EV_USE_INOTIFY
1604 if (fs_fd >= 0) 1987 if (fs_fd >= 0)
1605 close (fs_fd); 1988 close (fs_fd);
1606#endif 1989#endif
1607 1990
1608 if (backend_fd >= 0) 1991 if (backend_fd >= 0)
1609 close (backend_fd); 1992 close (backend_fd);
1610 1993
1994#if EV_USE_IOCP
1995 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1996#endif
1611#if EV_USE_PORT 1997#if EV_USE_PORT
1612 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1998 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1613#endif 1999#endif
1614#if EV_USE_KQUEUE 2000#if EV_USE_KQUEUE
1615 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2001 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1630#if EV_IDLE_ENABLE 2016#if EV_IDLE_ENABLE
1631 array_free (idle, [i]); 2017 array_free (idle, [i]);
1632#endif 2018#endif
1633 } 2019 }
1634 2020
1635 ev_free (anfds); anfdmax = 0; 2021 ev_free (anfds); anfds = 0; anfdmax = 0;
1636 2022
1637 /* have to use the microsoft-never-gets-it-right macro */ 2023 /* have to use the microsoft-never-gets-it-right macro */
1638 array_free (rfeed, EMPTY); 2024 array_free (rfeed, EMPTY);
1639 array_free (fdchange, EMPTY); 2025 array_free (fdchange, EMPTY);
1640 array_free (timer, EMPTY); 2026 array_free (timer, EMPTY);
… …
1642 array_free (periodic, EMPTY); 2028 array_free (periodic, EMPTY);
1643#endif 2029#endif
1644#if EV_FORK_ENABLE 2030#if EV_FORK_ENABLE
1645 array_free (fork, EMPTY); 2031 array_free (fork, EMPTY);
1646#endif 2032#endif
2033#if EV_CLEANUP_ENABLE
2034 array_free (cleanup, EMPTY);
2035#endif
1647 array_free (prepare, EMPTY); 2036 array_free (prepare, EMPTY);
1648 array_free (check, EMPTY); 2037 array_free (check, EMPTY);
1649#if EV_ASYNC_ENABLE 2038#if EV_ASYNC_ENABLE
1650 array_free (async, EMPTY); 2039 array_free (async, EMPTY);
1651#endif 2040#endif
1652 2041
1653 backend = 0; 2042 backend = 0;
2043
2044#if EV_MULTIPLICITY
2045 if (ev_is_default_loop (EV_A))
2046#endif
2047 ev_default_loop_ptr = 0;
2048#if EV_MULTIPLICITY
2049 else
2050 ev_free (EV_A);
2051#endif
1654} 2052}
1655 2053
1656#if EV_USE_INOTIFY 2054#if EV_USE_INOTIFY
1657inline_size void infy_fork (EV_P); 2055inline_size void infy_fork (EV_P);
1658#endif 2056#endif
… …
1673 infy_fork (EV_A); 2071 infy_fork (EV_A);
1674#endif 2072#endif
1675 2073
1676 if (ev_is_active (&pipe_w)) 2074 if (ev_is_active (&pipe_w))
1677 { 2075 {
1678 /* this "locks" the handlers against writing to the pipe */ 2076 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1679 /* while we modify the fd vars */
1680 gotsig = 1;
1681#if EV_ASYNC_ENABLE
1682 gotasync = 1;
1683#endif
1684 2077
1685 ev_ref (EV_A); 2078 ev_ref (EV_A);
1686 ev_io_stop (EV_A_ &pipe_w); 2079 ev_io_stop (EV_A_ &pipe_w);
1687 2080
1688#if EV_USE_EVENTFD 2081#if EV_USE_EVENTFD
… …
1690 close (evfd); 2083 close (evfd);
1691#endif 2084#endif
1692 2085
1693 if (evpipe [0] >= 0) 2086 if (evpipe [0] >= 0)
1694 { 2087 {
1695 close (evpipe [0]); 2088 EV_WIN32_CLOSE_FD (evpipe [0]);
1696 close (evpipe [1]); 2089 EV_WIN32_CLOSE_FD (evpipe [1]);
1697 } 2090 }
1698 2091
2092#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1699 evpipe_init (EV_A); 2093 evpipe_init (EV_A);
1700 /* now iterate over everything, in case we missed something */ 2094 /* now iterate over everything, in case we missed something */
1701 pipecb (EV_A_ &pipe_w, EV_READ); 2095 pipecb (EV_A_ &pipe_w, EV_READ);
2096#endif
1702 } 2097 }
1703 2098
1704 postfork = 0; 2099 postfork = 0;
1705} 2100}
1706 2101
1707#if EV_MULTIPLICITY 2102#if EV_MULTIPLICITY
1708 2103
1709struct ev_loop * 2104struct ev_loop * ecb_cold
1710ev_loop_new (unsigned int flags) 2105ev_loop_new (unsigned int flags)
1711{ 2106{
1712 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2107 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1713 2108
1714 memset (loop, 0, sizeof (struct ev_loop)); 2109 memset (EV_A, 0, sizeof (struct ev_loop));
1715 loop_init (EV_A_ flags); 2110 loop_init (EV_A_ flags);
1716 2111
1717 if (ev_backend (EV_A)) 2112 if (ev_backend (EV_A))
1718 return loop; 2113 return EV_A;
1719 2114
2115 ev_free (EV_A);
1720 return 0; 2116 return 0;
1721} 2117}
1722 2118
1723void
1724ev_loop_destroy (EV_P)
1725{
1726 loop_destroy (EV_A);
1727 ev_free (loop);
1728}
1729
1730void
1731ev_loop_fork (EV_P)
1732{
1733 postfork = 1; /* must be in line with ev_default_fork */
1734}
1735#endif /* multiplicity */ 2119#endif /* multiplicity */
1736 2120
1737#if EV_VERIFY 2121#if EV_VERIFY
1738static void noinline 2122static void noinline ecb_cold
1739verify_watcher (EV_P_ W w) 2123verify_watcher (EV_P_ W w)
1740{ 2124{
1741 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2125 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1742 2126
1743 if (w->pending) 2127 if (w->pending)
1744 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2128 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1745} 2129}
1746 2130
1747static void noinline 2131static void noinline ecb_cold
1748verify_heap (EV_P_ ANHE *heap, int N) 2132verify_heap (EV_P_ ANHE *heap, int N)
1749{ 2133{
1750 int i; 2134 int i;
1751 2135
1752 for (i = HEAP0; i < N + HEAP0; ++i) 2136 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1757 2141
1758 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2142 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1759 } 2143 }
1760} 2144}
1761 2145
1762static void noinline 2146static void noinline ecb_cold
1763array_verify (EV_P_ W *ws, int cnt) 2147array_verify (EV_P_ W *ws, int cnt)
1764{ 2148{
1765 while (cnt--) 2149 while (cnt--)
1766 { 2150 {
1767 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2151 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1768 verify_watcher (EV_A_ ws [cnt]); 2152 verify_watcher (EV_A_ ws [cnt]);
1769 } 2153 }
1770} 2154}
1771#endif 2155#endif
1772 2156
1773#if EV_MINIMAL < 2 2157#if EV_FEATURE_API
1774void 2158void ecb_cold
1775ev_loop_verify (EV_P) 2159ev_verify (EV_P)
1776{ 2160{
1777#if EV_VERIFY 2161#if EV_VERIFY
1778 int i; 2162 int i;
1779 WL w; 2163 WL w;
1780 2164
… …
1814#if EV_FORK_ENABLE 2198#if EV_FORK_ENABLE
1815 assert (forkmax >= forkcnt); 2199 assert (forkmax >= forkcnt);
1816 array_verify (EV_A_ (W *)forks, forkcnt); 2200 array_verify (EV_A_ (W *)forks, forkcnt);
1817#endif 2201#endif
1818 2202
2203#if EV_CLEANUP_ENABLE
2204 assert (cleanupmax >= cleanupcnt);
2205 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2206#endif
2207
1819#if EV_ASYNC_ENABLE 2208#if EV_ASYNC_ENABLE
1820 assert (asyncmax >= asynccnt); 2209 assert (asyncmax >= asynccnt);
1821 array_verify (EV_A_ (W *)asyncs, asynccnt); 2210 array_verify (EV_A_ (W *)asyncs, asynccnt);
1822#endif 2211#endif
1823 2212
2213#if EV_PREPARE_ENABLE
1824 assert (preparemax >= preparecnt); 2214 assert (preparemax >= preparecnt);
1825 array_verify (EV_A_ (W *)prepares, preparecnt); 2215 array_verify (EV_A_ (W *)prepares, preparecnt);
2216#endif
1826 2217
2218#if EV_CHECK_ENABLE
1827 assert (checkmax >= checkcnt); 2219 assert (checkmax >= checkcnt);
1828 array_verify (EV_A_ (W *)checks, checkcnt); 2220 array_verify (EV_A_ (W *)checks, checkcnt);
2221#endif
1829 2222
1830# if 0 2223# if 0
2224#if EV_CHILD_ENABLE
1831 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2225 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1832 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2226 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2227#endif
1833# endif 2228# endif
1834#endif 2229#endif
1835} 2230}
1836#endif 2231#endif
1837 2232
1838#if EV_MULTIPLICITY 2233#if EV_MULTIPLICITY
1839struct ev_loop * 2234struct ev_loop * ecb_cold
1840ev_default_loop_init (unsigned int flags)
1841#else 2235#else
1842int 2236int
2237#endif
1843ev_default_loop (unsigned int flags) 2238ev_default_loop (unsigned int flags)
1844#endif
1845{ 2239{
1846 if (!ev_default_loop_ptr) 2240 if (!ev_default_loop_ptr)
1847 { 2241 {
1848#if EV_MULTIPLICITY 2242#if EV_MULTIPLICITY
1849 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2243 EV_P = ev_default_loop_ptr = &default_loop_struct;
1850#else 2244#else
1851 ev_default_loop_ptr = 1; 2245 ev_default_loop_ptr = 1;
1852#endif 2246#endif
1853 2247
1854 loop_init (EV_A_ flags); 2248 loop_init (EV_A_ flags);
1855 2249
1856 if (ev_backend (EV_A)) 2250 if (ev_backend (EV_A))
1857 { 2251 {
1858#ifndef _WIN32 2252#if EV_CHILD_ENABLE
1859 ev_signal_init (&childev, childcb, SIGCHLD); 2253 ev_signal_init (&childev, childcb, SIGCHLD);
1860 ev_set_priority (&childev, EV_MAXPRI); 2254 ev_set_priority (&childev, EV_MAXPRI);
1861 ev_signal_start (EV_A_ &childev); 2255 ev_signal_start (EV_A_ &childev);
1862 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2256 ev_unref (EV_A); /* child watcher should not keep loop alive */
1863#endif 2257#endif
… …
1868 2262
1869 return ev_default_loop_ptr; 2263 return ev_default_loop_ptr;
1870} 2264}
1871 2265
1872void 2266void
1873ev_default_destroy (void) 2267ev_loop_fork (EV_P)
1874{ 2268{
1875#if EV_MULTIPLICITY
1876 struct ev_loop *loop = ev_default_loop_ptr;
1877#endif
1878
1879 ev_default_loop_ptr = 0;
1880
1881#ifndef _WIN32
1882 ev_ref (EV_A); /* child watcher */
1883 ev_signal_stop (EV_A_ &childev);
1884#endif
1885
1886 loop_destroy (EV_A);
1887}
1888
1889void
1890ev_default_fork (void)
1891{
1892#if EV_MULTIPLICITY
1893 struct ev_loop *loop = ev_default_loop_ptr;
1894#endif
1895
1896 postfork = 1; /* must be in line with ev_loop_fork */ 2269 postfork = 1; /* must be in line with ev_default_fork */
1897} 2270}
1898 2271
1899/*****************************************************************************/ 2272/*****************************************************************************/
1900 2273
1901void 2274void
… …
1923 2296
1924 for (pri = NUMPRI; pri--; ) 2297 for (pri = NUMPRI; pri--; )
1925 while (pendingcnt [pri]) 2298 while (pendingcnt [pri])
1926 { 2299 {
1927 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2300 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1928
1929 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1930 /* ^ this is no longer true, as pending_w could be here */
1931 2301
1932 p->w->pending = 0; 2302 p->w->pending = 0;
1933 EV_CB_INVOKE (p->w, p->events); 2303 EV_CB_INVOKE (p->w, p->events);
1934 EV_FREQUENT_CHECK; 2304 EV_FREQUENT_CHECK;
1935 } 2305 }
… …
1992 EV_FREQUENT_CHECK; 2362 EV_FREQUENT_CHECK;
1993 feed_reverse (EV_A_ (W)w); 2363 feed_reverse (EV_A_ (W)w);
1994 } 2364 }
1995 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2365 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1996 2366
1997 feed_reverse_done (EV_A_ EV_TIMEOUT); 2367 feed_reverse_done (EV_A_ EV_TIMER);
1998 } 2368 }
1999} 2369}
2000 2370
2001#if EV_PERIODIC_ENABLE 2371#if EV_PERIODIC_ENABLE
2372
2373static void noinline
2374periodic_recalc (EV_P_ ev_periodic *w)
2375{
2376 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2377 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2378
2379 /* the above almost always errs on the low side */
2380 while (at <= ev_rt_now)
2381 {
2382 ev_tstamp nat = at + w->interval;
2383
2384 /* when resolution fails us, we use ev_rt_now */
2385 if (expect_false (nat == at))
2386 {
2387 at = ev_rt_now;
2388 break;
2389 }
2390
2391 at = nat;
2392 }
2393
2394 ev_at (w) = at;
2395}
2396
2002/* make periodics pending */ 2397/* make periodics pending */
2003inline_size void 2398inline_size void
2004periodics_reify (EV_P) 2399periodics_reify (EV_P)
2005{ 2400{
2006 EV_FREQUENT_CHECK; 2401 EV_FREQUENT_CHECK;
… …
2025 ANHE_at_cache (periodics [HEAP0]); 2420 ANHE_at_cache (periodics [HEAP0]);
2026 downheap (periodics, periodiccnt, HEAP0); 2421 downheap (periodics, periodiccnt, HEAP0);
2027 } 2422 }
2028 else if (w->interval) 2423 else if (w->interval)
2029 { 2424 {
2030 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2425 periodic_recalc (EV_A_ w);
2031 /* if next trigger time is not sufficiently in the future, put it there */
2032 /* this might happen because of floating point inexactness */
2033 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2034 {
2035 ev_at (w) += w->interval;
2036
2037 /* if interval is unreasonably low we might still have a time in the past */
2038 /* so correct this. this will make the periodic very inexact, but the user */
2039 /* has effectively asked to get triggered more often than possible */
2040 if (ev_at (w) < ev_rt_now)
2041 ev_at (w) = ev_rt_now;
2042 }
2043
2044 ANHE_at_cache (periodics [HEAP0]); 2426 ANHE_at_cache (periodics [HEAP0]);
2045 downheap (periodics, periodiccnt, HEAP0); 2427 downheap (periodics, periodiccnt, HEAP0);
2046 } 2428 }
2047 else 2429 else
2048 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2430 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2055 feed_reverse_done (EV_A_ EV_PERIODIC); 2437 feed_reverse_done (EV_A_ EV_PERIODIC);
2056 } 2438 }
2057} 2439}
2058 2440
2059/* simply recalculate all periodics */ 2441/* simply recalculate all periodics */
2060/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2442/* TODO: maybe ensure that at least one event happens when jumping forward? */
2061static void noinline 2443static void noinline ecb_cold
2062periodics_reschedule (EV_P) 2444periodics_reschedule (EV_P)
2063{ 2445{
2064 int i; 2446 int i;
2065 2447
2066 /* adjust periodics after time jump */ 2448 /* adjust periodics after time jump */
… …
2069 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2451 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2070 2452
2071 if (w->reschedule_cb) 2453 if (w->reschedule_cb)
2072 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2454 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2073 else if (w->interval) 2455 else if (w->interval)
2074 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2456 periodic_recalc (EV_A_ w);
2075 2457
2076 ANHE_at_cache (periodics [i]); 2458 ANHE_at_cache (periodics [i]);
2077 } 2459 }
2078 2460
2079 reheap (periodics, periodiccnt); 2461 reheap (periodics, periodiccnt);
2080} 2462}
2081#endif 2463#endif
2082 2464
2083/* adjust all timers by a given offset */ 2465/* adjust all timers by a given offset */
2084static void noinline 2466static void noinline ecb_cold
2085timers_reschedule (EV_P_ ev_tstamp adjust) 2467timers_reschedule (EV_P_ ev_tstamp adjust)
2086{ 2468{
2087 int i; 2469 int i;
2088 2470
2089 for (i = 0; i < timercnt; ++i) 2471 for (i = 0; i < timercnt; ++i)
… …
2093 ANHE_at_cache (*he); 2475 ANHE_at_cache (*he);
2094 } 2476 }
2095} 2477}
2096 2478
2097/* fetch new monotonic and realtime times from the kernel */ 2479/* fetch new monotonic and realtime times from the kernel */
2098/* also detetc if there was a timejump, and act accordingly */ 2480/* also detect if there was a timejump, and act accordingly */
2099inline_speed void 2481inline_speed void
2100time_update (EV_P_ ev_tstamp max_block) 2482time_update (EV_P_ ev_tstamp max_block)
2101{ 2483{
2102#if EV_USE_MONOTONIC 2484#if EV_USE_MONOTONIC
2103 if (expect_true (have_monotonic)) 2485 if (expect_true (have_monotonic))
… …
2126 * doesn't hurt either as we only do this on time-jumps or 2508 * doesn't hurt either as we only do this on time-jumps or
2127 * in the unlikely event of having been preempted here. 2509 * in the unlikely event of having been preempted here.
2128 */ 2510 */
2129 for (i = 4; --i; ) 2511 for (i = 4; --i; )
2130 { 2512 {
2513 ev_tstamp diff;
2131 rtmn_diff = ev_rt_now - mn_now; 2514 rtmn_diff = ev_rt_now - mn_now;
2132 2515
2516 diff = odiff - rtmn_diff;
2517
2133 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2518 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2134 return; /* all is well */ 2519 return; /* all is well */
2135 2520
2136 ev_rt_now = ev_time (); 2521 ev_rt_now = ev_time ();
2137 mn_now = get_clock (); 2522 mn_now = get_clock ();
2138 now_floor = mn_now; 2523 now_floor = mn_now;
… …
2161 mn_now = ev_rt_now; 2546 mn_now = ev_rt_now;
2162 } 2547 }
2163} 2548}
2164 2549
2165void 2550void
2166ev_loop (EV_P_ int flags) 2551ev_run (EV_P_ int flags)
2167{ 2552{
2168#if EV_MINIMAL < 2 2553#if EV_FEATURE_API
2169 ++loop_depth; 2554 ++loop_depth;
2170#endif 2555#endif
2171 2556
2172 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2557 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2173 2558
2174 loop_done = EVUNLOOP_CANCEL; 2559 loop_done = EVBREAK_CANCEL;
2175 2560
2176 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2561 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2177 2562
2178 do 2563 do
2179 { 2564 {
2180#if EV_VERIFY >= 2 2565#if EV_VERIFY >= 2
2181 ev_loop_verify (EV_A); 2566 ev_verify (EV_A);
2182#endif 2567#endif
2183 2568
2184#ifndef _WIN32 2569#ifndef _WIN32
2185 if (expect_false (curpid)) /* penalise the forking check even more */ 2570 if (expect_false (curpid)) /* penalise the forking check even more */
2186 if (expect_false (getpid () != curpid)) 2571 if (expect_false (getpid () != curpid))
… …
2198 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2583 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2199 EV_INVOKE_PENDING; 2584 EV_INVOKE_PENDING;
2200 } 2585 }
2201#endif 2586#endif
2202 2587
2588#if EV_PREPARE_ENABLE
2203 /* queue prepare watchers (and execute them) */ 2589 /* queue prepare watchers (and execute them) */
2204 if (expect_false (preparecnt)) 2590 if (expect_false (preparecnt))
2205 { 2591 {
2206 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2592 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2207 EV_INVOKE_PENDING; 2593 EV_INVOKE_PENDING;
2208 } 2594 }
2595#endif
2209 2596
2210 if (expect_false (loop_done)) 2597 if (expect_false (loop_done))
2211 break; 2598 break;
2212 2599
2213 /* we might have forked, so reify kernel state if necessary */ 2600 /* we might have forked, so reify kernel state if necessary */
… …
2220 /* calculate blocking time */ 2607 /* calculate blocking time */
2221 { 2608 {
2222 ev_tstamp waittime = 0.; 2609 ev_tstamp waittime = 0.;
2223 ev_tstamp sleeptime = 0.; 2610 ev_tstamp sleeptime = 0.;
2224 2611
2612 /* remember old timestamp for io_blocktime calculation */
2613 ev_tstamp prev_mn_now = mn_now;
2614
2615 /* update time to cancel out callback processing overhead */
2616 time_update (EV_A_ 1e100);
2617
2618 /* from now on, we want a pipe-wake-up */
2619 pipe_write_wanted = 1;
2620
2621 ECB_MEMORY_FENCE; /* amke sure pipe_write_wanted is visible before we check for potential skips */
2622
2225 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2623 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2226 { 2624 {
2227 /* remember old timestamp for io_blocktime calculation */
2228 ev_tstamp prev_mn_now = mn_now;
2229
2230 /* update time to cancel out callback processing overhead */
2231 time_update (EV_A_ 1e100);
2232
2233 waittime = MAX_BLOCKTIME; 2625 waittime = MAX_BLOCKTIME;
2234 2626
2235 if (timercnt) 2627 if (timercnt)
2236 { 2628 {
2237 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2629 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2238 if (waittime > to) waittime = to; 2630 if (waittime > to) waittime = to;
2239 } 2631 }
2240 2632
2241#if EV_PERIODIC_ENABLE 2633#if EV_PERIODIC_ENABLE
2242 if (periodiccnt) 2634 if (periodiccnt)
2243 { 2635 {
2244 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2636 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2245 if (waittime > to) waittime = to; 2637 if (waittime > to) waittime = to;
2246 } 2638 }
2247#endif 2639#endif
2248 2640
2249 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2641 /* don't let timeouts decrease the waittime below timeout_blocktime */
2250 if (expect_false (waittime < timeout_blocktime)) 2642 if (expect_false (waittime < timeout_blocktime))
2251 waittime = timeout_blocktime; 2643 waittime = timeout_blocktime;
2644
2645 /* at this point, we NEED to wait, so we have to ensure */
2646 /* to pass a minimum nonzero value to the backend */
2647 if (expect_false (waittime < backend_mintime))
2648 waittime = backend_mintime;
2252 2649
2253 /* extra check because io_blocktime is commonly 0 */ 2650 /* extra check because io_blocktime is commonly 0 */
2254 if (expect_false (io_blocktime)) 2651 if (expect_false (io_blocktime))
2255 { 2652 {
2256 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2653 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2257 2654
2258 if (sleeptime > waittime - backend_fudge) 2655 if (sleeptime > waittime - backend_mintime)
2259 sleeptime = waittime - backend_fudge; 2656 sleeptime = waittime - backend_mintime;
2260 2657
2261 if (expect_true (sleeptime > 0.)) 2658 if (expect_true (sleeptime > 0.))
2262 { 2659 {
2263 ev_sleep (sleeptime); 2660 ev_sleep (sleeptime);
2264 waittime -= sleeptime; 2661 waittime -= sleeptime;
2265 } 2662 }
2266 } 2663 }
2267 } 2664 }
2268 2665
2269#if EV_MINIMAL < 2 2666#if EV_FEATURE_API
2270 ++loop_count; 2667 ++loop_count;
2271#endif 2668#endif
2272 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 2669 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2273 backend_poll (EV_A_ waittime); 2670 backend_poll (EV_A_ waittime);
2274 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 2671 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2672
2673 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2674
2675 if (pipe_write_skipped)
2676 {
2677 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2678 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2679 }
2680
2275 2681
2276 /* update ev_rt_now, do magic */ 2682 /* update ev_rt_now, do magic */
2277 time_update (EV_A_ waittime + sleeptime); 2683 time_update (EV_A_ waittime + sleeptime);
2278 } 2684 }
2279 2685
… …
2286#if EV_IDLE_ENABLE 2692#if EV_IDLE_ENABLE
2287 /* queue idle watchers unless other events are pending */ 2693 /* queue idle watchers unless other events are pending */
2288 idle_reify (EV_A); 2694 idle_reify (EV_A);
2289#endif 2695#endif
2290 2696
2697#if EV_CHECK_ENABLE
2291 /* queue check watchers, to be executed first */ 2698 /* queue check watchers, to be executed first */
2292 if (expect_false (checkcnt)) 2699 if (expect_false (checkcnt))
2293 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2700 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2701#endif
2294 2702
2295 EV_INVOKE_PENDING; 2703 EV_INVOKE_PENDING;
2296 } 2704 }
2297 while (expect_true ( 2705 while (expect_true (
2298 activecnt 2706 activecnt
2299 && !loop_done 2707 && !loop_done
2300 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2708 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2301 )); 2709 ));
2302 2710
2303 if (loop_done == EVUNLOOP_ONE) 2711 if (loop_done == EVBREAK_ONE)
2304 loop_done = EVUNLOOP_CANCEL; 2712 loop_done = EVBREAK_CANCEL;
2305 2713
2306#if EV_MINIMAL < 2 2714#if EV_FEATURE_API
2307 --loop_depth; 2715 --loop_depth;
2308#endif 2716#endif
2309} 2717}
2310 2718
2311void 2719void
2312ev_unloop (EV_P_ int how) 2720ev_break (EV_P_ int how)
2313{ 2721{
2314 loop_done = how; 2722 loop_done = how;
2315} 2723}
2316 2724
2317void 2725void
… …
2364inline_size void 2772inline_size void
2365wlist_del (WL *head, WL elem) 2773wlist_del (WL *head, WL elem)
2366{ 2774{
2367 while (*head) 2775 while (*head)
2368 { 2776 {
2369 if (*head == elem) 2777 if (expect_true (*head == elem))
2370 { 2778 {
2371 *head = elem->next; 2779 *head = elem->next;
2372 return; 2780 break;
2373 } 2781 }
2374 2782
2375 head = &(*head)->next; 2783 head = &(*head)->next;
2376 } 2784 }
2377} 2785}
… …
2437 2845
2438 if (expect_false (ev_is_active (w))) 2846 if (expect_false (ev_is_active (w)))
2439 return; 2847 return;
2440 2848
2441 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2849 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2442 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2850 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2443 2851
2444 EV_FREQUENT_CHECK; 2852 EV_FREQUENT_CHECK;
2445 2853
2446 ev_start (EV_A_ (W)w, 1); 2854 ev_start (EV_A_ (W)w, 1);
2447 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2855 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2465 EV_FREQUENT_CHECK; 2873 EV_FREQUENT_CHECK;
2466 2874
2467 wlist_del (&anfds[w->fd].head, (WL)w); 2875 wlist_del (&anfds[w->fd].head, (WL)w);
2468 ev_stop (EV_A_ (W)w); 2876 ev_stop (EV_A_ (W)w);
2469 2877
2470 fd_change (EV_A_ w->fd, 1); 2878 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2471 2879
2472 EV_FREQUENT_CHECK; 2880 EV_FREQUENT_CHECK;
2473} 2881}
2474 2882
2475void noinline 2883void noinline
… …
2517 timers [active] = timers [timercnt + HEAP0]; 2925 timers [active] = timers [timercnt + HEAP0];
2518 adjustheap (timers, timercnt, active); 2926 adjustheap (timers, timercnt, active);
2519 } 2927 }
2520 } 2928 }
2521 2929
2522 EV_FREQUENT_CHECK;
2523
2524 ev_at (w) -= mn_now; 2930 ev_at (w) -= mn_now;
2525 2931
2526 ev_stop (EV_A_ (W)w); 2932 ev_stop (EV_A_ (W)w);
2933
2934 EV_FREQUENT_CHECK;
2527} 2935}
2528 2936
2529void noinline 2937void noinline
2530ev_timer_again (EV_P_ ev_timer *w) 2938ev_timer_again (EV_P_ ev_timer *w)
2531{ 2939{
… …
2567 if (w->reschedule_cb) 2975 if (w->reschedule_cb)
2568 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2976 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2569 else if (w->interval) 2977 else if (w->interval)
2570 { 2978 {
2571 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2979 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2572 /* this formula differs from the one in periodic_reify because we do not always round up */ 2980 periodic_recalc (EV_A_ w);
2573 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2574 } 2981 }
2575 else 2982 else
2576 ev_at (w) = w->offset; 2983 ev_at (w) = w->offset;
2577 2984
2578 EV_FREQUENT_CHECK; 2985 EV_FREQUENT_CHECK;
… …
2610 periodics [active] = periodics [periodiccnt + HEAP0]; 3017 periodics [active] = periodics [periodiccnt + HEAP0];
2611 adjustheap (periodics, periodiccnt, active); 3018 adjustheap (periodics, periodiccnt, active);
2612 } 3019 }
2613 } 3020 }
2614 3021
2615 EV_FREQUENT_CHECK;
2616
2617 ev_stop (EV_A_ (W)w); 3022 ev_stop (EV_A_ (W)w);
3023
3024 EV_FREQUENT_CHECK;
2618} 3025}
2619 3026
2620void noinline 3027void noinline
2621ev_periodic_again (EV_P_ ev_periodic *w) 3028ev_periodic_again (EV_P_ ev_periodic *w)
2622{ 3029{
… …
2628 3035
2629#ifndef SA_RESTART 3036#ifndef SA_RESTART
2630# define SA_RESTART 0 3037# define SA_RESTART 0
2631#endif 3038#endif
2632 3039
3040#if EV_SIGNAL_ENABLE
3041
2633void noinline 3042void noinline
2634ev_signal_start (EV_P_ ev_signal *w) 3043ev_signal_start (EV_P_ ev_signal *w)
2635{ 3044{
2636#if EV_MULTIPLICITY
2637 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2638#endif
2639 if (expect_false (ev_is_active (w))) 3045 if (expect_false (ev_is_active (w)))
2640 return; 3046 return;
2641 3047
2642 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3048 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3049
3050#if EV_MULTIPLICITY
3051 assert (("libev: a signal must not be attached to two different loops",
3052 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3053
3054 signals [w->signum - 1].loop = EV_A;
3055#endif
2643 3056
2644 EV_FREQUENT_CHECK; 3057 EV_FREQUENT_CHECK;
2645 3058
2646#if EV_USE_SIGNALFD 3059#if EV_USE_SIGNALFD
2647 if (sigfd == -2) 3060 if (sigfd == -2)
… …
2669 sigaddset (&sigfd_set, w->signum); 3082 sigaddset (&sigfd_set, w->signum);
2670 sigprocmask (SIG_BLOCK, &sigfd_set, 0); 3083 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2671 3084
2672 signalfd (sigfd, &sigfd_set, 0); 3085 signalfd (sigfd, &sigfd_set, 0);
2673 } 3086 }
2674 else
2675#endif
2676 evpipe_init (EV_A);
2677
2678 {
2679#ifndef _WIN32
2680 sigset_t full, prev;
2681 sigfillset (&full);
2682 sigprocmask (SIG_SETMASK, &full, &prev);
2683#endif
2684
2685 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2686
2687#ifndef _WIN32
2688# if EV_USE_SIGNALFD
2689 if (sigfd < 0)/*TODO*/
2690# endif 3087#endif
2691 sigdelset (&prev, w->signum);
2692 sigprocmask (SIG_SETMASK, &prev, 0);
2693#endif
2694 }
2695 3088
2696 ev_start (EV_A_ (W)w, 1); 3089 ev_start (EV_A_ (W)w, 1);
2697 wlist_add (&signals [w->signum - 1].head, (WL)w); 3090 wlist_add (&signals [w->signum - 1].head, (WL)w);
2698 3091
2699 if (!((WL)w)->next) 3092 if (!((WL)w)->next)
2700 {
2701#if _WIN32
2702 signal (w->signum, ev_sighandler);
2703#else
2704# if EV_USE_SIGNALFD 3093# if EV_USE_SIGNALFD
2705 if (sigfd < 0) /*TODO*/ 3094 if (sigfd < 0) /*TODO*/
2706# endif 3095# endif
2707 { 3096 {
3097# ifdef _WIN32
3098 evpipe_init (EV_A);
3099
3100 signal (w->signum, ev_sighandler);
3101# else
2708 struct sigaction sa = { }; 3102 struct sigaction sa;
3103
3104 evpipe_init (EV_A);
3105
2709 sa.sa_handler = ev_sighandler; 3106 sa.sa_handler = ev_sighandler;
2710 sigfillset (&sa.sa_mask); 3107 sigfillset (&sa.sa_mask);
2711 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3108 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2712 sigaction (w->signum, &sa, 0); 3109 sigaction (w->signum, &sa, 0);
3110
3111 if (origflags & EVFLAG_NOSIGMASK)
3112 {
3113 sigemptyset (&sa.sa_mask);
3114 sigaddset (&sa.sa_mask, w->signum);
3115 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2713 } 3116 }
2714#endif 3117#endif
2715 } 3118 }
2716 3119
2717 EV_FREQUENT_CHECK; 3120 EV_FREQUENT_CHECK;
2718} 3121}
2719 3122
2720void noinline 3123void noinline
… …
2728 3131
2729 wlist_del (&signals [w->signum - 1].head, (WL)w); 3132 wlist_del (&signals [w->signum - 1].head, (WL)w);
2730 ev_stop (EV_A_ (W)w); 3133 ev_stop (EV_A_ (W)w);
2731 3134
2732 if (!signals [w->signum - 1].head) 3135 if (!signals [w->signum - 1].head)
3136 {
3137#if EV_MULTIPLICITY
3138 signals [w->signum - 1].loop = 0; /* unattach from signal */
3139#endif
2733#if EV_USE_SIGNALFD 3140#if EV_USE_SIGNALFD
2734 if (sigfd >= 0) 3141 if (sigfd >= 0)
2735 { 3142 {
2736 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D 3143 sigset_t ss;
3144
3145 sigemptyset (&ss);
3146 sigaddset (&ss, w->signum);
2737 sigdelset (&sigfd_set, w->signum); 3147 sigdelset (&sigfd_set, w->signum);
3148
2738 signalfd (sigfd, &sigfd_set, 0); 3149 signalfd (sigfd, &sigfd_set, 0);
2739 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D 3150 sigprocmask (SIG_UNBLOCK, &ss, 0);
2740 /*TODO: maybe unblock signal? */
2741 } 3151 }
2742 else 3152 else
2743#endif 3153#endif
2744 signal (w->signum, SIG_DFL); 3154 signal (w->signum, SIG_DFL);
3155 }
2745 3156
2746 EV_FREQUENT_CHECK; 3157 EV_FREQUENT_CHECK;
2747} 3158}
3159
3160#endif
3161
3162#if EV_CHILD_ENABLE
2748 3163
2749void 3164void
2750ev_child_start (EV_P_ ev_child *w) 3165ev_child_start (EV_P_ ev_child *w)
2751{ 3166{
2752#if EV_MULTIPLICITY 3167#if EV_MULTIPLICITY
… …
2756 return; 3171 return;
2757 3172
2758 EV_FREQUENT_CHECK; 3173 EV_FREQUENT_CHECK;
2759 3174
2760 ev_start (EV_A_ (W)w, 1); 3175 ev_start (EV_A_ (W)w, 1);
2761 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3176 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2762 3177
2763 EV_FREQUENT_CHECK; 3178 EV_FREQUENT_CHECK;
2764} 3179}
2765 3180
2766void 3181void
… …
2770 if (expect_false (!ev_is_active (w))) 3185 if (expect_false (!ev_is_active (w)))
2771 return; 3186 return;
2772 3187
2773 EV_FREQUENT_CHECK; 3188 EV_FREQUENT_CHECK;
2774 3189
2775 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3190 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2776 ev_stop (EV_A_ (W)w); 3191 ev_stop (EV_A_ (W)w);
2777 3192
2778 EV_FREQUENT_CHECK; 3193 EV_FREQUENT_CHECK;
2779} 3194}
3195
3196#endif
2780 3197
2781#if EV_STAT_ENABLE 3198#if EV_STAT_ENABLE
2782 3199
2783# ifdef _WIN32 3200# ifdef _WIN32
2784# undef lstat 3201# undef lstat
… …
2790#define MIN_STAT_INTERVAL 0.1074891 3207#define MIN_STAT_INTERVAL 0.1074891
2791 3208
2792static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3209static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2793 3210
2794#if EV_USE_INOTIFY 3211#if EV_USE_INOTIFY
2795# define EV_INOTIFY_BUFSIZE 8192 3212
3213/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3214# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2796 3215
2797static void noinline 3216static void noinline
2798infy_add (EV_P_ ev_stat *w) 3217infy_add (EV_P_ ev_stat *w)
2799{ 3218{
2800 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); 3219 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);
2801 3220
2802 if (w->wd < 0) 3221 if (w->wd >= 0)
3222 {
3223 struct statfs sfs;
3224
3225 /* now local changes will be tracked by inotify, but remote changes won't */
3226 /* unless the filesystem is known to be local, we therefore still poll */
3227 /* also do poll on <2.6.25, but with normal frequency */
3228
3229 if (!fs_2625)
3230 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3231 else if (!statfs (w->path, &sfs)
3232 && (sfs.f_type == 0x1373 /* devfs */
3233 || sfs.f_type == 0xEF53 /* ext2/3 */
3234 || sfs.f_type == 0x3153464a /* jfs */
3235 || sfs.f_type == 0x52654973 /* reiser3 */
3236 || sfs.f_type == 0x01021994 /* tempfs */
3237 || sfs.f_type == 0x58465342 /* xfs */))
3238 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3239 else
3240 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2803 { 3241 }
3242 else
3243 {
3244 /* can't use inotify, continue to stat */
2804 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3245 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2805 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2806 3246
2807 /* monitor some parent directory for speedup hints */ 3247 /* if path is not there, monitor some parent directory for speedup hints */
2808 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3248 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2809 /* but an efficiency issue only */ 3249 /* but an efficiency issue only */
2810 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3250 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2811 { 3251 {
2812 char path [4096]; 3252 char path [4096];
… …
2822 if (!pend || pend == path) 3262 if (!pend || pend == path)
2823 break; 3263 break;
2824 3264
2825 *pend = 0; 3265 *pend = 0;
2826 w->wd = inotify_add_watch (fs_fd, path, mask); 3266 w->wd = inotify_add_watch (fs_fd, path, mask);
2827 } 3267 }
2828 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3268 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2829 } 3269 }
2830 } 3270 }
2831 3271
2832 if (w->wd >= 0) 3272 if (w->wd >= 0)
2833 {
2834 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3273 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2835 3274
2836 /* now local changes will be tracked by inotify, but remote changes won't */ 3275 /* now re-arm timer, if required */
2837 /* unless the filesystem it known to be local, we therefore still poll */ 3276 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2838 /* also do poll on <2.6.25, but with normal frequency */
2839 struct statfs sfs;
2840
2841 if (fs_2625 && !statfs (w->path, &sfs))
2842 if (sfs.f_type == 0x1373 /* devfs */
2843 || sfs.f_type == 0xEF53 /* ext2/3 */
2844 || sfs.f_type == 0x3153464a /* jfs */
2845 || sfs.f_type == 0x52654973 /* reiser3 */
2846 || sfs.f_type == 0x01021994 /* tempfs */
2847 || sfs.f_type == 0x58465342 /* xfs */)
2848 return;
2849
2850 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2851 ev_timer_again (EV_A_ &w->timer); 3277 ev_timer_again (EV_A_ &w->timer);
2852 } 3278 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2853} 3279}
2854 3280
2855static void noinline 3281static void noinline
2856infy_del (EV_P_ ev_stat *w) 3282infy_del (EV_P_ ev_stat *w)
2857{ 3283{
… …
2860 3286
2861 if (wd < 0) 3287 if (wd < 0)
2862 return; 3288 return;
2863 3289
2864 w->wd = -2; 3290 w->wd = -2;
2865 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3291 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2866 wlist_del (&fs_hash [slot].head, (WL)w); 3292 wlist_del (&fs_hash [slot].head, (WL)w);
2867 3293
2868 /* remove this watcher, if others are watching it, they will rearm */ 3294 /* remove this watcher, if others are watching it, they will rearm */
2869 inotify_rm_watch (fs_fd, wd); 3295 inotify_rm_watch (fs_fd, wd);
2870} 3296}
… …
2872static void noinline 3298static void noinline
2873infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3299infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2874{ 3300{
2875 if (slot < 0) 3301 if (slot < 0)
2876 /* overflow, need to check for all hash slots */ 3302 /* overflow, need to check for all hash slots */
2877 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3303 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2878 infy_wd (EV_A_ slot, wd, ev); 3304 infy_wd (EV_A_ slot, wd, ev);
2879 else 3305 else
2880 { 3306 {
2881 WL w_; 3307 WL w_;
2882 3308
2883 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3309 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2884 { 3310 {
2885 ev_stat *w = (ev_stat *)w_; 3311 ev_stat *w = (ev_stat *)w_;
2886 w_ = w_->next; /* lets us remove this watcher and all before it */ 3312 w_ = w_->next; /* lets us remove this watcher and all before it */
2887 3313
2888 if (w->wd == wd || wd == -1) 3314 if (w->wd == wd || wd == -1)
2889 { 3315 {
2890 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3316 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2891 { 3317 {
2892 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3318 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2893 w->wd = -1; 3319 w->wd = -1;
2894 infy_add (EV_A_ w); /* re-add, no matter what */ 3320 infy_add (EV_A_ w); /* re-add, no matter what */
2895 } 3321 }
2896 3322
2897 stat_timer_cb (EV_A_ &w->timer, 0); 3323 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2902 3328
2903static void 3329static void
2904infy_cb (EV_P_ ev_io *w, int revents) 3330infy_cb (EV_P_ ev_io *w, int revents)
2905{ 3331{
2906 char buf [EV_INOTIFY_BUFSIZE]; 3332 char buf [EV_INOTIFY_BUFSIZE];
2907 struct inotify_event *ev = (struct inotify_event *)buf;
2908 int ofs; 3333 int ofs;
2909 int len = read (fs_fd, buf, sizeof (buf)); 3334 int len = read (fs_fd, buf, sizeof (buf));
2910 3335
2911 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3336 for (ofs = 0; ofs < len; )
3337 {
3338 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2912 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3339 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3340 ofs += sizeof (struct inotify_event) + ev->len;
3341 }
2913} 3342}
2914 3343
2915inline_size void 3344inline_size void ecb_cold
2916check_2625 (EV_P) 3345ev_check_2625 (EV_P)
2917{ 3346{
2918 /* kernels < 2.6.25 are borked 3347 /* kernels < 2.6.25 are borked
2919 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3348 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2920 */ 3349 */
2921 struct utsname buf; 3350 if (ev_linux_version () < 0x020619)
2922 int major, minor, micro;
2923
2924 if (uname (&buf))
2925 return; 3351 return;
2926 3352
2927 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2928 return;
2929
2930 if (major < 2
2931 || (major == 2 && minor < 6)
2932 || (major == 2 && minor == 6 && micro < 25))
2933 return;
2934
2935 fs_2625 = 1; 3353 fs_2625 = 1;
3354}
3355
3356inline_size int
3357infy_newfd (void)
3358{
3359#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3360 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3361 if (fd >= 0)
3362 return fd;
3363#endif
3364 return inotify_init ();
2936} 3365}
2937 3366
2938inline_size void 3367inline_size void
2939infy_init (EV_P) 3368infy_init (EV_P)
2940{ 3369{
2941 if (fs_fd != -2) 3370 if (fs_fd != -2)
2942 return; 3371 return;
2943 3372
2944 fs_fd = -1; 3373 fs_fd = -1;
2945 3374
2946 check_2625 (EV_A); 3375 ev_check_2625 (EV_A);
2947 3376
2948 fs_fd = inotify_init (); 3377 fs_fd = infy_newfd ();
2949 3378
2950 if (fs_fd >= 0) 3379 if (fs_fd >= 0)
2951 { 3380 {
3381 fd_intern (fs_fd);
2952 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3382 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2953 ev_set_priority (&fs_w, EV_MAXPRI); 3383 ev_set_priority (&fs_w, EV_MAXPRI);
2954 ev_io_start (EV_A_ &fs_w); 3384 ev_io_start (EV_A_ &fs_w);
3385 ev_unref (EV_A);
2955 } 3386 }
2956} 3387}
2957 3388
2958inline_size void 3389inline_size void
2959infy_fork (EV_P) 3390infy_fork (EV_P)
… …
2961 int slot; 3392 int slot;
2962 3393
2963 if (fs_fd < 0) 3394 if (fs_fd < 0)
2964 return; 3395 return;
2965 3396
3397 ev_ref (EV_A);
3398 ev_io_stop (EV_A_ &fs_w);
2966 close (fs_fd); 3399 close (fs_fd);
2967 fs_fd = inotify_init (); 3400 fs_fd = infy_newfd ();
2968 3401
3402 if (fs_fd >= 0)
3403 {
3404 fd_intern (fs_fd);
3405 ev_io_set (&fs_w, fs_fd, EV_READ);
3406 ev_io_start (EV_A_ &fs_w);
3407 ev_unref (EV_A);
3408 }
3409
2969 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3410 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2970 { 3411 {
2971 WL w_ = fs_hash [slot].head; 3412 WL w_ = fs_hash [slot].head;
2972 fs_hash [slot].head = 0; 3413 fs_hash [slot].head = 0;
2973 3414
2974 while (w_) 3415 while (w_)
… …
2979 w->wd = -1; 3420 w->wd = -1;
2980 3421
2981 if (fs_fd >= 0) 3422 if (fs_fd >= 0)
2982 infy_add (EV_A_ w); /* re-add, no matter what */ 3423 infy_add (EV_A_ w); /* re-add, no matter what */
2983 else 3424 else
3425 {
3426 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3427 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2984 ev_timer_again (EV_A_ &w->timer); 3428 ev_timer_again (EV_A_ &w->timer);
3429 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3430 }
2985 } 3431 }
2986 } 3432 }
2987} 3433}
2988 3434
2989#endif 3435#endif
… …
3006static void noinline 3452static void noinline
3007stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3453stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3008{ 3454{
3009 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3455 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3010 3456
3011 /* we copy this here each the time so that */ 3457 ev_statdata prev = w->attr;
3012 /* prev has the old value when the callback gets invoked */
3013 w->prev = w->attr;
3014 ev_stat_stat (EV_A_ w); 3458 ev_stat_stat (EV_A_ w);
3015 3459
3016 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3460 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3017 if ( 3461 if (
3018 w->prev.st_dev != w->attr.st_dev 3462 prev.st_dev != w->attr.st_dev
3019 || w->prev.st_ino != w->attr.st_ino 3463 || prev.st_ino != w->attr.st_ino
3020 || w->prev.st_mode != w->attr.st_mode 3464 || prev.st_mode != w->attr.st_mode
3021 || w->prev.st_nlink != w->attr.st_nlink 3465 || prev.st_nlink != w->attr.st_nlink
3022 || w->prev.st_uid != w->attr.st_uid 3466 || prev.st_uid != w->attr.st_uid
3023 || w->prev.st_gid != w->attr.st_gid 3467 || prev.st_gid != w->attr.st_gid
3024 || w->prev.st_rdev != w->attr.st_rdev 3468 || prev.st_rdev != w->attr.st_rdev
3025 || w->prev.st_size != w->attr.st_size 3469 || prev.st_size != w->attr.st_size
3026 || w->prev.st_atime != w->attr.st_atime 3470 || prev.st_atime != w->attr.st_atime
3027 || w->prev.st_mtime != w->attr.st_mtime 3471 || prev.st_mtime != w->attr.st_mtime
3028 || w->prev.st_ctime != w->attr.st_ctime 3472 || prev.st_ctime != w->attr.st_ctime
3029 ) { 3473 ) {
3474 /* we only update w->prev on actual differences */
3475 /* in case we test more often than invoke the callback, */
3476 /* to ensure that prev is always different to attr */
3477 w->prev = prev;
3478
3030 #if EV_USE_INOTIFY 3479 #if EV_USE_INOTIFY
3031 if (fs_fd >= 0) 3480 if (fs_fd >= 0)
3032 { 3481 {
3033 infy_del (EV_A_ w); 3482 infy_del (EV_A_ w);
3034 infy_add (EV_A_ w); 3483 infy_add (EV_A_ w);
… …
3059 3508
3060 if (fs_fd >= 0) 3509 if (fs_fd >= 0)
3061 infy_add (EV_A_ w); 3510 infy_add (EV_A_ w);
3062 else 3511 else
3063#endif 3512#endif
3513 {
3064 ev_timer_again (EV_A_ &w->timer); 3514 ev_timer_again (EV_A_ &w->timer);
3515 ev_unref (EV_A);
3516 }
3065 3517
3066 ev_start (EV_A_ (W)w, 1); 3518 ev_start (EV_A_ (W)w, 1);
3067 3519
3068 EV_FREQUENT_CHECK; 3520 EV_FREQUENT_CHECK;
3069} 3521}
… …
3078 EV_FREQUENT_CHECK; 3530 EV_FREQUENT_CHECK;
3079 3531
3080#if EV_USE_INOTIFY 3532#if EV_USE_INOTIFY
3081 infy_del (EV_A_ w); 3533 infy_del (EV_A_ w);
3082#endif 3534#endif
3535
3536 if (ev_is_active (&w->timer))
3537 {
3538 ev_ref (EV_A);
3083 ev_timer_stop (EV_A_ &w->timer); 3539 ev_timer_stop (EV_A_ &w->timer);
3540 }
3084 3541
3085 ev_stop (EV_A_ (W)w); 3542 ev_stop (EV_A_ (W)w);
3086 3543
3087 EV_FREQUENT_CHECK; 3544 EV_FREQUENT_CHECK;
3088} 3545}
… …
3133 3590
3134 EV_FREQUENT_CHECK; 3591 EV_FREQUENT_CHECK;
3135} 3592}
3136#endif 3593#endif
3137 3594
3595#if EV_PREPARE_ENABLE
3138void 3596void
3139ev_prepare_start (EV_P_ ev_prepare *w) 3597ev_prepare_start (EV_P_ ev_prepare *w)
3140{ 3598{
3141 if (expect_false (ev_is_active (w))) 3599 if (expect_false (ev_is_active (w)))
3142 return; 3600 return;
… …
3168 3626
3169 ev_stop (EV_A_ (W)w); 3627 ev_stop (EV_A_ (W)w);
3170 3628
3171 EV_FREQUENT_CHECK; 3629 EV_FREQUENT_CHECK;
3172} 3630}
3631#endif
3173 3632
3633#if EV_CHECK_ENABLE
3174void 3634void
3175ev_check_start (EV_P_ ev_check *w) 3635ev_check_start (EV_P_ ev_check *w)
3176{ 3636{
3177 if (expect_false (ev_is_active (w))) 3637 if (expect_false (ev_is_active (w)))
3178 return; 3638 return;
… …
3204 3664
3205 ev_stop (EV_A_ (W)w); 3665 ev_stop (EV_A_ (W)w);
3206 3666
3207 EV_FREQUENT_CHECK; 3667 EV_FREQUENT_CHECK;
3208} 3668}
3669#endif
3209 3670
3210#if EV_EMBED_ENABLE 3671#if EV_EMBED_ENABLE
3211void noinline 3672void noinline
3212ev_embed_sweep (EV_P_ ev_embed *w) 3673ev_embed_sweep (EV_P_ ev_embed *w)
3213{ 3674{
3214 ev_loop (w->other, EVLOOP_NONBLOCK); 3675 ev_run (w->other, EVRUN_NOWAIT);
3215} 3676}
3216 3677
3217static void 3678static void
3218embed_io_cb (EV_P_ ev_io *io, int revents) 3679embed_io_cb (EV_P_ ev_io *io, int revents)
3219{ 3680{
3220 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3681 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3221 3682
3222 if (ev_cb (w)) 3683 if (ev_cb (w))
3223 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3684 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3224 else 3685 else
3225 ev_loop (w->other, EVLOOP_NONBLOCK); 3686 ev_run (w->other, EVRUN_NOWAIT);
3226} 3687}
3227 3688
3228static void 3689static void
3229embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3690embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3230{ 3691{
3231 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3692 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3232 3693
3233 { 3694 {
3234 struct ev_loop *loop = w->other; 3695 EV_P = w->other;
3235 3696
3236 while (fdchangecnt) 3697 while (fdchangecnt)
3237 { 3698 {
3238 fd_reify (EV_A); 3699 fd_reify (EV_A);
3239 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3700 ev_run (EV_A_ EVRUN_NOWAIT);
3240 } 3701 }
3241 } 3702 }
3242} 3703}
3243 3704
3244static void 3705static void
… …
3247 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3708 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3248 3709
3249 ev_embed_stop (EV_A_ w); 3710 ev_embed_stop (EV_A_ w);
3250 3711
3251 { 3712 {
3252 struct ev_loop *loop = w->other; 3713 EV_P = w->other;
3253 3714
3254 ev_loop_fork (EV_A); 3715 ev_loop_fork (EV_A);
3255 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3716 ev_run (EV_A_ EVRUN_NOWAIT);
3256 } 3717 }
3257 3718
3258 ev_embed_start (EV_A_ w); 3719 ev_embed_start (EV_A_ w);
3259} 3720}
3260 3721
… …
3271{ 3732{
3272 if (expect_false (ev_is_active (w))) 3733 if (expect_false (ev_is_active (w)))
3273 return; 3734 return;
3274 3735
3275 { 3736 {
3276 struct ev_loop *loop = w->other; 3737 EV_P = w->other;
3277 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3738 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3278 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3739 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3279 } 3740 }
3280 3741
3281 EV_FREQUENT_CHECK; 3742 EV_FREQUENT_CHECK;
… …
3308 3769
3309 ev_io_stop (EV_A_ &w->io); 3770 ev_io_stop (EV_A_ &w->io);
3310 ev_prepare_stop (EV_A_ &w->prepare); 3771 ev_prepare_stop (EV_A_ &w->prepare);
3311 ev_fork_stop (EV_A_ &w->fork); 3772 ev_fork_stop (EV_A_ &w->fork);
3312 3773
3774 ev_stop (EV_A_ (W)w);
3775
3313 EV_FREQUENT_CHECK; 3776 EV_FREQUENT_CHECK;
3314} 3777}
3315#endif 3778#endif
3316 3779
3317#if EV_FORK_ENABLE 3780#if EV_FORK_ENABLE
… …
3350 3813
3351 EV_FREQUENT_CHECK; 3814 EV_FREQUENT_CHECK;
3352} 3815}
3353#endif 3816#endif
3354 3817
3818#if EV_CLEANUP_ENABLE
3819void
3820ev_cleanup_start (EV_P_ ev_cleanup *w)
3821{
3822 if (expect_false (ev_is_active (w)))
3823 return;
3824
3825 EV_FREQUENT_CHECK;
3826
3827 ev_start (EV_A_ (W)w, ++cleanupcnt);
3828 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3829 cleanups [cleanupcnt - 1] = w;
3830
3831 /* cleanup watchers should never keep a refcount on the loop */
3832 ev_unref (EV_A);
3833 EV_FREQUENT_CHECK;
3834}
3835
3836void
3837ev_cleanup_stop (EV_P_ ev_cleanup *w)
3838{
3839 clear_pending (EV_A_ (W)w);
3840 if (expect_false (!ev_is_active (w)))
3841 return;
3842
3843 EV_FREQUENT_CHECK;
3844 ev_ref (EV_A);
3845
3846 {
3847 int active = ev_active (w);
3848
3849 cleanups [active - 1] = cleanups [--cleanupcnt];
3850 ev_active (cleanups [active - 1]) = active;
3851 }
3852
3853 ev_stop (EV_A_ (W)w);
3854
3855 EV_FREQUENT_CHECK;
3856}
3857#endif
3858
3355#if EV_ASYNC_ENABLE 3859#if EV_ASYNC_ENABLE
3356void 3860void
3357ev_async_start (EV_P_ ev_async *w) 3861ev_async_start (EV_P_ ev_async *w)
3358{ 3862{
3359 if (expect_false (ev_is_active (w))) 3863 if (expect_false (ev_is_active (w)))
3360 return; 3864 return;
3361 3865
3866 w->sent = 0;
3867
3362 evpipe_init (EV_A); 3868 evpipe_init (EV_A);
3363 3869
3364 EV_FREQUENT_CHECK; 3870 EV_FREQUENT_CHECK;
3365 3871
3366 ev_start (EV_A_ (W)w, ++asynccnt); 3872 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3393 3899
3394void 3900void
3395ev_async_send (EV_P_ ev_async *w) 3901ev_async_send (EV_P_ ev_async *w)
3396{ 3902{
3397 w->sent = 1; 3903 w->sent = 1;
3398 evpipe_write (EV_A_ &gotasync); 3904 evpipe_write (EV_A_ &async_pending);
3399} 3905}
3400#endif 3906#endif
3401 3907
3402/*****************************************************************************/ 3908/*****************************************************************************/
3403 3909
… …
3443{ 3949{
3444 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3950 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3445 3951
3446 if (expect_false (!once)) 3952 if (expect_false (!once))
3447 { 3953 {
3448 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3954 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3449 return; 3955 return;
3450 } 3956 }
3451 3957
3452 once->cb = cb; 3958 once->cb = cb;
3453 once->arg = arg; 3959 once->arg = arg;
… …
3468} 3974}
3469 3975
3470/*****************************************************************************/ 3976/*****************************************************************************/
3471 3977
3472#if EV_WALK_ENABLE 3978#if EV_WALK_ENABLE
3473void 3979void ecb_cold
3474ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 3980ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3475{ 3981{
3476 int i, j; 3982 int i, j;
3477 ev_watcher_list *wl, *wn; 3983 ev_watcher_list *wl, *wn;
3478 3984
… …
3540 if (types & EV_ASYNC) 4046 if (types & EV_ASYNC)
3541 for (i = asynccnt; i--; ) 4047 for (i = asynccnt; i--; )
3542 cb (EV_A_ EV_ASYNC, asyncs [i]); 4048 cb (EV_A_ EV_ASYNC, asyncs [i]);
3543#endif 4049#endif
3544 4050
4051#if EV_PREPARE_ENABLE
3545 if (types & EV_PREPARE) 4052 if (types & EV_PREPARE)
3546 for (i = preparecnt; i--; ) 4053 for (i = preparecnt; i--; )
3547#if EV_EMBED_ENABLE 4054# if EV_EMBED_ENABLE
3548 if (ev_cb (prepares [i]) != embed_prepare_cb) 4055 if (ev_cb (prepares [i]) != embed_prepare_cb)
3549#endif 4056# endif
3550 cb (EV_A_ EV_PREPARE, prepares [i]); 4057 cb (EV_A_ EV_PREPARE, prepares [i]);
4058#endif
3551 4059
4060#if EV_CHECK_ENABLE
3552 if (types & EV_CHECK) 4061 if (types & EV_CHECK)
3553 for (i = checkcnt; i--; ) 4062 for (i = checkcnt; i--; )
3554 cb (EV_A_ EV_CHECK, checks [i]); 4063 cb (EV_A_ EV_CHECK, checks [i]);
4064#endif
3555 4065
4066#if EV_SIGNAL_ENABLE
3556 if (types & EV_SIGNAL) 4067 if (types & EV_SIGNAL)
3557 for (i = 0; i < signalmax; ++i) 4068 for (i = 0; i < EV_NSIG - 1; ++i)
3558 for (wl = signals [i].head; wl; ) 4069 for (wl = signals [i].head; wl; )
3559 { 4070 {
3560 wn = wl->next; 4071 wn = wl->next;
3561 cb (EV_A_ EV_SIGNAL, wl); 4072 cb (EV_A_ EV_SIGNAL, wl);
3562 wl = wn; 4073 wl = wn;
3563 } 4074 }
4075#endif
3564 4076
4077#if EV_CHILD_ENABLE
3565 if (types & EV_CHILD) 4078 if (types & EV_CHILD)
3566 for (i = EV_PID_HASHSIZE; i--; ) 4079 for (i = (EV_PID_HASHSIZE); i--; )
3567 for (wl = childs [i]; wl; ) 4080 for (wl = childs [i]; wl; )
3568 { 4081 {
3569 wn = wl->next; 4082 wn = wl->next;
3570 cb (EV_A_ EV_CHILD, wl); 4083 cb (EV_A_ EV_CHILD, wl);
3571 wl = wn; 4084 wl = wn;
3572 } 4085 }
4086#endif
3573/* EV_STAT 0x00001000 /* stat data changed */ 4087/* EV_STAT 0x00001000 /* stat data changed */
3574/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4088/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3575} 4089}
3576#endif 4090#endif
3577 4091
3578#if EV_MULTIPLICITY 4092#if EV_MULTIPLICITY
3579 #include "ev_wrap.h" 4093 #include "ev_wrap.h"
3580#endif 4094#endif
3581 4095
3582#ifdef __cplusplus 4096EV_CPP(})
3583}
3584#endif
3585 4097

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