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Comparing libev/ev.c (file contents):
Revision 1.292 by root, Mon Jun 29 07:22:56 2009 UTC vs.
Revision 1.453 by root, Thu Feb 28 00:33:25 2013 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) 2007,2008,2009,2010,2011,2012 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
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
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
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
138# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
139# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
154# endif
155
156# if HAVE_EVENTFD
157# ifndef EV_USE_EVENTFD
158# define EV_USE_EVENTFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
144# endif 163# endif
145 164
146#endif 165#endif
147 166
148#include <math.h>
149#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
150#include <fcntl.h> 169#include <fcntl.h>
151#include <stddef.h> 170#include <stddef.h>
152 171
153#include <stdio.h> 172#include <stdio.h>
154 173
155#include <assert.h> 174#include <assert.h>
156#include <errno.h> 175#include <errno.h>
157#include <sys/types.h> 176#include <sys/types.h>
158#include <time.h> 177#include <time.h>
178#include <limits.h>
159 179
160#include <signal.h> 180#include <signal.h>
161 181
162#ifdef EV_H 182#ifdef EV_H
163# include EV_H 183# include EV_H
164#else 184#else
165# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
166#endif 197#endif
167 198
168#ifndef _WIN32 199#ifndef _WIN32
169# include <sys/time.h> 200# include <sys/time.h>
170# include <sys/wait.h> 201# include <sys/wait.h>
171# include <unistd.h> 202# include <unistd.h>
172#else 203#else
173# include <io.h> 204# include <io.h>
174# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
175# include <windows.h> 207# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
178# endif 210# endif
211# undef EV_AVOID_STDIO
179#endif 212#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
180 221
181/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
223
224/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG
226/* use what's provided */
227#elif defined NSIG
228# define EV_NSIG (NSIG)
229#elif defined _NSIG
230# define EV_NSIG (_NSIG)
231#elif defined SIGMAX
232# define EV_NSIG (SIGMAX+1)
233#elif defined SIG_MAX
234# define EV_NSIG (SIG_MAX+1)
235#elif defined _SIG_MAX
236# define EV_NSIG (_SIG_MAX+1)
237#elif defined MAXSIG
238# define EV_NSIG (MAXSIG+1)
239#elif defined MAX_SIG
240# define EV_NSIG (MAX_SIG+1)
241#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else
246# error "unable to find value for NSIG, please report"
247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
249# define EV_NSIG 65
250#endif
251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
182 255
183#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
185# define EV_USE_CLOCK_SYSCALL 1 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 259# else
187# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
188# endif 261# endif
189#endif 262#endif
190 263
191#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 266# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 267# else
195# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
196# endif 269# endif
197#endif 270#endif
198 271
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 274#endif
202 275
203#ifndef EV_USE_NANOSLEEP 276#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 277# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 278# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 279# else
207# define EV_USE_NANOSLEEP 0 280# define EV_USE_NANOSLEEP 0
208# endif 281# endif
209#endif 282#endif
210 283
211#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 286#endif
214 287
215#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
216# ifdef _WIN32 289# ifdef _WIN32
217# define EV_USE_POLL 0 290# define EV_USE_POLL 0
218# else 291# else
219# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 293# endif
221#endif 294#endif
222 295
223#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 299# else
227# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
228# endif 301# endif
229#endif 302#endif
230 303
… …
236# define EV_USE_PORT 0 309# define EV_USE_PORT 0
237#endif 310#endif
238 311
239#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 315# else
243# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
244# endif 317# endif
245#endif 318#endif
246 319
247#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 321# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
249# define EV_PID_HASHSIZE 1
250# else
251# define EV_PID_HASHSIZE 16
252# endif
253#endif 322#endif
254 323
255#ifndef EV_INOTIFY_HASHSIZE 324#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 325# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_INOTIFY_HASHSIZE 1
258# else
259# define EV_INOTIFY_HASHSIZE 16
260# endif
261#endif 326#endif
262 327
263#ifndef EV_USE_EVENTFD 328#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 330# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 331# else
267# define EV_USE_EVENTFD 0 332# define EV_USE_EVENTFD 0
333# endif
334#endif
335
336#ifndef EV_USE_SIGNALFD
337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
338# define EV_USE_SIGNALFD EV_FEATURE_OS
339# else
340# define EV_USE_SIGNALFD 0
268# endif 341# endif
269#endif 342#endif
270 343
271#if 0 /* debugging */ 344#if 0 /* debugging */
272# define EV_VERIFY 3 345# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 346# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 347# define EV_HEAP_CACHE_AT 1
275#endif 348#endif
276 349
277#ifndef EV_VERIFY 350#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 352#endif
280 353
281#ifndef EV_USE_4HEAP 354#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 355# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 356#endif
284 357
285#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
360#endif
361
362#ifdef ANDROID
363/* supposedly, android doesn't typedef fd_mask */
364# undef EV_USE_SELECT
365# define EV_USE_SELECT 0
366/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
367# undef EV_USE_CLOCK_SYSCALL
368# define EV_USE_CLOCK_SYSCALL 0
369#endif
370
371/* aix's poll.h seems to cause lots of trouble */
372#ifdef _AIX
373/* AIX has a completely broken poll.h header */
374# undef EV_USE_POLL
375# define EV_USE_POLL 0
287#endif 376#endif
288 377
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 378/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290/* which makes programs even slower. might work on other unices, too. */ 379/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 380#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h> 381# include <sys/syscall.h>
293# ifdef SYS_clock_gettime 382# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 383# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1 385# define EV_USE_MONOTONIC 1
297# else 386# else
… …
316# undef EV_USE_INOTIFY 405# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 406# define EV_USE_INOTIFY 0
318#endif 407#endif
319 408
320#if !EV_USE_NANOSLEEP 409#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 410/* hp-ux has it in sys/time.h, which we unconditionally include above */
411# if !defined _WIN32 && !defined __hpux
322# include <sys/select.h> 412# include <sys/select.h>
323# endif 413# endif
324#endif 414#endif
325 415
326#if EV_USE_INOTIFY 416#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 417# include <sys/statfs.h>
329# include <sys/inotify.h> 418# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 419/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 420# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 421# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0 422# define EV_USE_INOTIFY 0
334# endif 423# endif
335#endif 424#endif
336 425
337#if EV_SELECT_IS_WINSOCKET
338# include <winsock.h>
339#endif
340
341#if EV_USE_EVENTFD 426#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h> 428# include <stdint.h>
344# ifdef __cplusplus 429# ifndef EFD_NONBLOCK
345extern "C" { 430# define EFD_NONBLOCK O_NONBLOCK
346# endif 431# endif
347int eventfd (unsigned int initval, int flags); 432# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 433# ifdef O_CLOEXEC
349} 434# define EFD_CLOEXEC O_CLOEXEC
435# else
436# define EFD_CLOEXEC 02000000
437# endif
350# endif 438# endif
439EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
440#endif
441
442#if EV_USE_SIGNALFD
443/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
444# include <stdint.h>
445# ifndef SFD_NONBLOCK
446# define SFD_NONBLOCK O_NONBLOCK
447# endif
448# ifndef SFD_CLOEXEC
449# ifdef O_CLOEXEC
450# define SFD_CLOEXEC O_CLOEXEC
451# else
452# define SFD_CLOEXEC 02000000
453# endif
454# endif
455EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
456
457struct signalfd_siginfo
458{
459 uint32_t ssi_signo;
460 char pad[128 - sizeof (uint32_t)];
461};
351#endif 462#endif
352 463
353/**/ 464/**/
354 465
355#if EV_VERIFY >= 3 466#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 467# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 468#else
358# define EV_FREQUENT_CHECK do { } while (0) 469# define EV_FREQUENT_CHECK do { } while (0)
359#endif 470#endif
360 471
361/* 472/*
362 * This is used to avoid floating point rounding problems. 473 * This is used to work around floating point rounding problems.
363 * It is added to ev_rt_now when scheduling periodics
364 * to ensure progress, time-wise, even when rounding
365 * errors are against us.
366 * This value is good at least till the year 4000. 474 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 475 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 476#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
477/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
370 478
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 479#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
372#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 480#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
374 481
482#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
483#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
484
485/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
486/* ECB.H BEGIN */
487/*
488 * libecb - http://software.schmorp.de/pkg/libecb
489 *
490 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
491 * Copyright (©) 2011 Emanuele Giaquinta
492 * All rights reserved.
493 *
494 * Redistribution and use in source and binary forms, with or without modifica-
495 * tion, are permitted provided that the following conditions are met:
496 *
497 * 1. Redistributions of source code must retain the above copyright notice,
498 * this list of conditions and the following disclaimer.
499 *
500 * 2. Redistributions in binary form must reproduce the above copyright
501 * notice, this list of conditions and the following disclaimer in the
502 * documentation and/or other materials provided with the distribution.
503 *
504 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
505 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
506 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
507 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
508 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
509 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
510 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
511 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
512 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
513 * OF THE POSSIBILITY OF SUCH DAMAGE.
514 */
515
516#ifndef ECB_H
517#define ECB_H
518
519/* 16 bits major, 16 bits minor */
520#define ECB_VERSION 0x00010002
521
522#ifdef _WIN32
523 typedef signed char int8_t;
524 typedef unsigned char uint8_t;
525 typedef signed short int16_t;
526 typedef unsigned short uint16_t;
527 typedef signed int int32_t;
528 typedef unsigned int uint32_t;
375#if __GNUC__ >= 4 529 #if __GNUC__
376# define expect(expr,value) __builtin_expect ((expr),(value)) 530 typedef signed long long int64_t;
377# define noinline __attribute__ ((noinline)) 531 typedef unsigned long long uint64_t;
532 #else /* _MSC_VER || __BORLANDC__ */
533 typedef signed __int64 int64_t;
534 typedef unsigned __int64 uint64_t;
535 #endif
536 #ifdef _WIN64
537 #define ECB_PTRSIZE 8
538 typedef uint64_t uintptr_t;
539 typedef int64_t intptr_t;
540 #else
541 #define ECB_PTRSIZE 4
542 typedef uint32_t uintptr_t;
543 typedef int32_t intptr_t;
544 #endif
378#else 545#else
379# define expect(expr,value) (expr) 546 #include <inttypes.h>
380# define noinline 547 #if UINTMAX_MAX > 0xffffffffU
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 548 #define ECB_PTRSIZE 8
382# define inline 549 #else
550 #define ECB_PTRSIZE 4
551 #endif
383# endif 552#endif
553
554/* many compilers define _GNUC_ to some versions but then only implement
555 * what their idiot authors think are the "more important" extensions,
556 * causing enormous grief in return for some better fake benchmark numbers.
557 * or so.
558 * we try to detect these and simply assume they are not gcc - if they have
559 * an issue with that they should have done it right in the first place.
560 */
561#ifndef ECB_GCC_VERSION
562 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
563 #define ECB_GCC_VERSION(major,minor) 0
564 #else
565 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
384#endif 566 #endif
567#endif
385 568
569#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
570#define ECB_C99 (__STDC_VERSION__ >= 199901L)
571#define ECB_C11 (__STDC_VERSION__ >= 201112L)
572#define ECB_CPP (__cplusplus+0)
573#define ECB_CPP11 (__cplusplus >= 201103L)
574
575#if ECB_CPP
576 #define ECB_EXTERN_C extern "C"
577 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
578 #define ECB_EXTERN_C_END }
579#else
580 #define ECB_EXTERN_C extern
581 #define ECB_EXTERN_C_BEG
582 #define ECB_EXTERN_C_END
583#endif
584
585/*****************************************************************************/
586
587/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
588/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
589
590#if ECB_NO_THREADS
591 #define ECB_NO_SMP 1
592#endif
593
594#if ECB_NO_SMP
595 #define ECB_MEMORY_FENCE do { } while (0)
596#endif
597
598#ifndef ECB_MEMORY_FENCE
599 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
600 #if __i386 || __i386__
601 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
602 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
603 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
604 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
606 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
607 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
608 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
609 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
610 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
611 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
612 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
613 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
614 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
616 #elif __sparc || __sparc__
617 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
618 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
619 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
620 #elif defined __s390__ || defined __s390x__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
622 #elif defined __mips__
623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
624 #elif defined __alpha__
625 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
626 #elif defined __hppa__
627 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
629 #elif defined __ia64__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
631 #endif
632 #endif
633#endif
634
635#ifndef ECB_MEMORY_FENCE
636 #if ECB_GCC_VERSION(4,7)
637 /* see comment below (stdatomic.h) about the C11 memory model. */
638 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
639
640 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
641 * without risking compile time errors with other compilers. We *could*
642 * define our own ecb_clang_has_feature, but I just can't be bothered to work
643 * around this shit time and again.
644 * #elif defined __clang && __has_feature (cxx_atomic)
645 * // see comment below (stdatomic.h) about the C11 memory model.
646 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
647 */
648
649 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
650 #define ECB_MEMORY_FENCE __sync_synchronize ()
651 #elif _MSC_VER >= 1400 /* VC++ 2005 */
652 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
653 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
654 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
655 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
656 #elif defined _WIN32
657 #include <WinNT.h>
658 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
659 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
660 #include <mbarrier.h>
661 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
662 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
663 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
664 #elif __xlC__
665 #define ECB_MEMORY_FENCE __sync ()
666 #endif
667#endif
668
669#ifndef ECB_MEMORY_FENCE
670 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
671 /* we assume that these memory fences work on all variables/all memory accesses, */
672 /* not just C11 atomics and atomic accesses */
673 #include <stdatomic.h>
674 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
675 /* any fence other than seq_cst, which isn't very efficient for us. */
676 /* Why that is, we don't know - either the C11 memory model is quite useless */
677 /* for most usages, or gcc and clang have a bug */
678 /* I *currently* lean towards the latter, and inefficiently implement */
679 /* all three of ecb's fences as a seq_cst fence */
680 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
681 #endif
682#endif
683
684#ifndef ECB_MEMORY_FENCE
685 #if !ECB_AVOID_PTHREADS
686 /*
687 * if you get undefined symbol references to pthread_mutex_lock,
688 * or failure to find pthread.h, then you should implement
689 * the ECB_MEMORY_FENCE operations for your cpu/compiler
690 * OR provide pthread.h and link against the posix thread library
691 * of your system.
692 */
693 #include <pthread.h>
694 #define ECB_NEEDS_PTHREADS 1
695 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
696
697 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
698 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
699 #endif
700#endif
701
702#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
703 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
704#endif
705
706#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
707 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
708#endif
709
710/*****************************************************************************/
711
712#if __cplusplus
713 #define ecb_inline static inline
714#elif ECB_GCC_VERSION(2,5)
715 #define ecb_inline static __inline__
716#elif ECB_C99
717 #define ecb_inline static inline
718#else
719 #define ecb_inline static
720#endif
721
722#if ECB_GCC_VERSION(3,3)
723 #define ecb_restrict __restrict__
724#elif ECB_C99
725 #define ecb_restrict restrict
726#else
727 #define ecb_restrict
728#endif
729
730typedef int ecb_bool;
731
732#define ECB_CONCAT_(a, b) a ## b
733#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
734#define ECB_STRINGIFY_(a) # a
735#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
736
737#define ecb_function_ ecb_inline
738
739#if ECB_GCC_VERSION(3,1)
740 #define ecb_attribute(attrlist) __attribute__(attrlist)
741 #define ecb_is_constant(expr) __builtin_constant_p (expr)
742 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
743 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
744#else
745 #define ecb_attribute(attrlist)
746 #define ecb_is_constant(expr) 0
747 #define ecb_expect(expr,value) (expr)
748 #define ecb_prefetch(addr,rw,locality)
749#endif
750
751/* no emulation for ecb_decltype */
752#if ECB_GCC_VERSION(4,5)
753 #define ecb_decltype(x) __decltype(x)
754#elif ECB_GCC_VERSION(3,0)
755 #define ecb_decltype(x) __typeof(x)
756#endif
757
758#define ecb_noinline ecb_attribute ((__noinline__))
759#define ecb_unused ecb_attribute ((__unused__))
760#define ecb_const ecb_attribute ((__const__))
761#define ecb_pure ecb_attribute ((__pure__))
762
763#if ECB_C11
764 #define ecb_noreturn _Noreturn
765#else
766 #define ecb_noreturn ecb_attribute ((__noreturn__))
767#endif
768
769#if ECB_GCC_VERSION(4,3)
770 #define ecb_artificial ecb_attribute ((__artificial__))
771 #define ecb_hot ecb_attribute ((__hot__))
772 #define ecb_cold ecb_attribute ((__cold__))
773#else
774 #define ecb_artificial
775 #define ecb_hot
776 #define ecb_cold
777#endif
778
779/* put around conditional expressions if you are very sure that the */
780/* expression is mostly true or mostly false. note that these return */
781/* booleans, not the expression. */
386#define expect_false(expr) expect ((expr) != 0, 0) 782#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 783#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
784/* for compatibility to the rest of the world */
785#define ecb_likely(expr) ecb_expect_true (expr)
786#define ecb_unlikely(expr) ecb_expect_false (expr)
787
788/* count trailing zero bits and count # of one bits */
789#if ECB_GCC_VERSION(3,4)
790 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
791 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
792 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
793 #define ecb_ctz32(x) __builtin_ctz (x)
794 #define ecb_ctz64(x) __builtin_ctzll (x)
795 #define ecb_popcount32(x) __builtin_popcount (x)
796 /* no popcountll */
797#else
798 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
799 ecb_function_ int
800 ecb_ctz32 (uint32_t x)
801 {
802 int r = 0;
803
804 x &= ~x + 1; /* this isolates the lowest bit */
805
806#if ECB_branchless_on_i386
807 r += !!(x & 0xaaaaaaaa) << 0;
808 r += !!(x & 0xcccccccc) << 1;
809 r += !!(x & 0xf0f0f0f0) << 2;
810 r += !!(x & 0xff00ff00) << 3;
811 r += !!(x & 0xffff0000) << 4;
812#else
813 if (x & 0xaaaaaaaa) r += 1;
814 if (x & 0xcccccccc) r += 2;
815 if (x & 0xf0f0f0f0) r += 4;
816 if (x & 0xff00ff00) r += 8;
817 if (x & 0xffff0000) r += 16;
818#endif
819
820 return r;
821 }
822
823 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
824 ecb_function_ int
825 ecb_ctz64 (uint64_t x)
826 {
827 int shift = x & 0xffffffffU ? 0 : 32;
828 return ecb_ctz32 (x >> shift) + shift;
829 }
830
831 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
832 ecb_function_ int
833 ecb_popcount32 (uint32_t x)
834 {
835 x -= (x >> 1) & 0x55555555;
836 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
837 x = ((x >> 4) + x) & 0x0f0f0f0f;
838 x *= 0x01010101;
839
840 return x >> 24;
841 }
842
843 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
844 ecb_function_ int ecb_ld32 (uint32_t x)
845 {
846 int r = 0;
847
848 if (x >> 16) { x >>= 16; r += 16; }
849 if (x >> 8) { x >>= 8; r += 8; }
850 if (x >> 4) { x >>= 4; r += 4; }
851 if (x >> 2) { x >>= 2; r += 2; }
852 if (x >> 1) { r += 1; }
853
854 return r;
855 }
856
857 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
858 ecb_function_ int ecb_ld64 (uint64_t x)
859 {
860 int r = 0;
861
862 if (x >> 32) { x >>= 32; r += 32; }
863
864 return r + ecb_ld32 (x);
865 }
866#endif
867
868ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
869ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
870ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
871ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
872
873ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
874ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
875{
876 return ( (x * 0x0802U & 0x22110U)
877 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
878}
879
880ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
881ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
882{
883 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
884 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
885 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
886 x = ( x >> 8 ) | ( x << 8);
887
888 return x;
889}
890
891ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
892ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
893{
894 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
895 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
896 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
897 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
898 x = ( x >> 16 ) | ( x << 16);
899
900 return x;
901}
902
903/* popcount64 is only available on 64 bit cpus as gcc builtin */
904/* so for this version we are lazy */
905ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
906ecb_function_ int
907ecb_popcount64 (uint64_t x)
908{
909 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
910}
911
912ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
913ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
914ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
915ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
916ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
917ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
918ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
919ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
920
921ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
922ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
923ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
924ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
925ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
926ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
927ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
928ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
929
930#if ECB_GCC_VERSION(4,3)
931 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
932 #define ecb_bswap32(x) __builtin_bswap32 (x)
933 #define ecb_bswap64(x) __builtin_bswap64 (x)
934#else
935 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
936 ecb_function_ uint16_t
937 ecb_bswap16 (uint16_t x)
938 {
939 return ecb_rotl16 (x, 8);
940 }
941
942 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
943 ecb_function_ uint32_t
944 ecb_bswap32 (uint32_t x)
945 {
946 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
947 }
948
949 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
950 ecb_function_ uint64_t
951 ecb_bswap64 (uint64_t x)
952 {
953 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
954 }
955#endif
956
957#if ECB_GCC_VERSION(4,5)
958 #define ecb_unreachable() __builtin_unreachable ()
959#else
960 /* this seems to work fine, but gcc always emits a warning for it :/ */
961 ecb_inline void ecb_unreachable (void) ecb_noreturn;
962 ecb_inline void ecb_unreachable (void) { }
963#endif
964
965/* try to tell the compiler that some condition is definitely true */
966#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
967
968ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
969ecb_inline unsigned char
970ecb_byteorder_helper (void)
971{
972 /* the union code still generates code under pressure in gcc, */
973 /* but less than using pointers, and always seems to */
974 /* successfully return a constant. */
975 /* the reason why we have this horrible preprocessor mess */
976 /* is to avoid it in all cases, at least on common architectures */
977 /* or when using a recent enough gcc version (>= 4.6) */
978#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
979 return 0x44;
980#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
981 return 0x44;
982#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
983 return 0x11;
984#else
985 union
986 {
987 uint32_t i;
988 uint8_t c;
989 } u = { 0x11223344 };
990 return u.c;
991#endif
992}
993
994ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
995ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
996ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
997ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
998
999#if ECB_GCC_VERSION(3,0) || ECB_C99
1000 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1001#else
1002 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1003#endif
1004
1005#if __cplusplus
1006 template<typename T>
1007 static inline T ecb_div_rd (T val, T div)
1008 {
1009 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1010 }
1011 template<typename T>
1012 static inline T ecb_div_ru (T val, T div)
1013 {
1014 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1015 }
1016#else
1017 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1018 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1019#endif
1020
1021#if ecb_cplusplus_does_not_suck
1022 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1023 template<typename T, int N>
1024 static inline int ecb_array_length (const T (&arr)[N])
1025 {
1026 return N;
1027 }
1028#else
1029 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1030#endif
1031
1032/*******************************************************************************/
1033/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1034
1035/* basically, everything uses "ieee pure-endian" floating point numbers */
1036/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1037#if 0 \
1038 || __i386 || __i386__ \
1039 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1040 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1041 || defined __arm__ && defined __ARM_EABI__ \
1042 || defined __s390__ || defined __s390x__ \
1043 || defined __mips__ \
1044 || defined __alpha__ \
1045 || defined __hppa__ \
1046 || defined __ia64__ \
1047 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1048 #define ECB_STDFP 1
1049 #include <string.h> /* for memcpy */
1050#else
1051 #define ECB_STDFP 0
1052 #include <math.h> /* for frexp*, ldexp* */
1053#endif
1054
1055#ifndef ECB_NO_LIBM
1056
1057 /* convert a float to ieee single/binary32 */
1058 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1059 ecb_function_ uint32_t
1060 ecb_float_to_binary32 (float x)
1061 {
1062 uint32_t r;
1063
1064 #if ECB_STDFP
1065 memcpy (&r, &x, 4);
1066 #else
1067 /* slow emulation, works for anything but -0 */
1068 uint32_t m;
1069 int e;
1070
1071 if (x == 0e0f ) return 0x00000000U;
1072 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1073 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1074 if (x != x ) return 0x7fbfffffU;
1075
1076 m = frexpf (x, &e) * 0x1000000U;
1077
1078 r = m & 0x80000000U;
1079
1080 if (r)
1081 m = -m;
1082
1083 if (e <= -126)
1084 {
1085 m &= 0xffffffU;
1086 m >>= (-125 - e);
1087 e = -126;
1088 }
1089
1090 r |= (e + 126) << 23;
1091 r |= m & 0x7fffffU;
1092 #endif
1093
1094 return r;
1095 }
1096
1097 /* converts an ieee single/binary32 to a float */
1098 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1099 ecb_function_ float
1100 ecb_binary32_to_float (uint32_t x)
1101 {
1102 float r;
1103
1104 #if ECB_STDFP
1105 memcpy (&r, &x, 4);
1106 #else
1107 /* emulation, only works for normals and subnormals and +0 */
1108 int neg = x >> 31;
1109 int e = (x >> 23) & 0xffU;
1110
1111 x &= 0x7fffffU;
1112
1113 if (e)
1114 x |= 0x800000U;
1115 else
1116 e = 1;
1117
1118 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1119 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1120
1121 r = neg ? -r : r;
1122 #endif
1123
1124 return r;
1125 }
1126
1127 /* convert a double to ieee double/binary64 */
1128 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1129 ecb_function_ uint64_t
1130 ecb_double_to_binary64 (double x)
1131 {
1132 uint64_t r;
1133
1134 #if ECB_STDFP
1135 memcpy (&r, &x, 8);
1136 #else
1137 /* slow emulation, works for anything but -0 */
1138 uint64_t m;
1139 int e;
1140
1141 if (x == 0e0 ) return 0x0000000000000000U;
1142 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1143 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1144 if (x != x ) return 0X7ff7ffffffffffffU;
1145
1146 m = frexp (x, &e) * 0x20000000000000U;
1147
1148 r = m & 0x8000000000000000;;
1149
1150 if (r)
1151 m = -m;
1152
1153 if (e <= -1022)
1154 {
1155 m &= 0x1fffffffffffffU;
1156 m >>= (-1021 - e);
1157 e = -1022;
1158 }
1159
1160 r |= ((uint64_t)(e + 1022)) << 52;
1161 r |= m & 0xfffffffffffffU;
1162 #endif
1163
1164 return r;
1165 }
1166
1167 /* converts an ieee double/binary64 to a double */
1168 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1169 ecb_function_ double
1170 ecb_binary64_to_double (uint64_t x)
1171 {
1172 double r;
1173
1174 #if ECB_STDFP
1175 memcpy (&r, &x, 8);
1176 #else
1177 /* emulation, only works for normals and subnormals and +0 */
1178 int neg = x >> 63;
1179 int e = (x >> 52) & 0x7ffU;
1180
1181 x &= 0xfffffffffffffU;
1182
1183 if (e)
1184 x |= 0x10000000000000U;
1185 else
1186 e = 1;
1187
1188 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1189 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1190
1191 r = neg ? -r : r;
1192 #endif
1193
1194 return r;
1195 }
1196
1197#endif
1198
1199#endif
1200
1201/* ECB.H END */
1202
1203#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1204/* if your architecture doesn't need memory fences, e.g. because it is
1205 * single-cpu/core, or if you use libev in a project that doesn't use libev
1206 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1207 * libev, in which cases the memory fences become nops.
1208 * alternatively, you can remove this #error and link against libpthread,
1209 * which will then provide the memory fences.
1210 */
1211# error "memory fences not defined for your architecture, please report"
1212#endif
1213
1214#ifndef ECB_MEMORY_FENCE
1215# define ECB_MEMORY_FENCE do { } while (0)
1216# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1217# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1218#endif
1219
1220#define expect_false(cond) ecb_expect_false (cond)
1221#define expect_true(cond) ecb_expect_true (cond)
1222#define noinline ecb_noinline
1223
388#define inline_size static inline 1224#define inline_size ecb_inline
389 1225
390#if EV_MINIMAL 1226#if EV_FEATURE_CODE
1227# define inline_speed ecb_inline
1228#else
391# define inline_speed static noinline 1229# define inline_speed static noinline
1230#endif
1231
1232#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1233
1234#if EV_MINPRI == EV_MAXPRI
1235# define ABSPRI(w) (((W)w), 0)
392#else 1236#else
393# define inline_speed static inline
394#endif
395
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1237# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1238#endif
398 1239
399#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1240#define EMPTY /* required for microsofts broken pseudo-c compiler */
400#define EMPTY2(a,b) /* used to suppress some warnings */ 1241#define EMPTY2(a,b) /* used to suppress some warnings */
401 1242
402typedef ev_watcher *W; 1243typedef ev_watcher *W;
… …
406#define ev_active(w) ((W)(w))->active 1247#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at 1248#define ev_at(w) ((WT)(w))->at
408 1249
409#if EV_USE_REALTIME 1250#if EV_USE_REALTIME
410/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1251/* sig_atomic_t is used to avoid per-thread variables or locking but still */
411/* giving it a reasonably high chance of working on typical architetcures */ 1252/* giving it a reasonably high chance of working on typical architectures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1253static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif 1254#endif
414 1255
415#if EV_USE_MONOTONIC 1256#if EV_USE_MONOTONIC
416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1257static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif 1258#endif
418 1259
1260#ifndef EV_FD_TO_WIN32_HANDLE
1261# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1262#endif
1263#ifndef EV_WIN32_HANDLE_TO_FD
1264# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1265#endif
1266#ifndef EV_WIN32_CLOSE_FD
1267# define EV_WIN32_CLOSE_FD(fd) close (fd)
1268#endif
1269
419#ifdef _WIN32 1270#ifdef _WIN32
420# include "ev_win32.c" 1271# include "ev_win32.c"
421#endif 1272#endif
422 1273
423/*****************************************************************************/ 1274/*****************************************************************************/
424 1275
1276/* define a suitable floor function (only used by periodics atm) */
1277
1278#if EV_USE_FLOOR
1279# include <math.h>
1280# define ev_floor(v) floor (v)
1281#else
1282
1283#include <float.h>
1284
1285/* a floor() replacement function, should be independent of ev_tstamp type */
1286static ev_tstamp noinline
1287ev_floor (ev_tstamp v)
1288{
1289 /* the choice of shift factor is not terribly important */
1290#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1291 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1292#else
1293 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1294#endif
1295
1296 /* argument too large for an unsigned long? */
1297 if (expect_false (v >= shift))
1298 {
1299 ev_tstamp f;
1300
1301 if (v == v - 1.)
1302 return v; /* very large number */
1303
1304 f = shift * ev_floor (v * (1. / shift));
1305 return f + ev_floor (v - f);
1306 }
1307
1308 /* special treatment for negative args? */
1309 if (expect_false (v < 0.))
1310 {
1311 ev_tstamp f = -ev_floor (-v);
1312
1313 return f - (f == v ? 0 : 1);
1314 }
1315
1316 /* fits into an unsigned long */
1317 return (unsigned long)v;
1318}
1319
1320#endif
1321
1322/*****************************************************************************/
1323
1324#ifdef __linux
1325# include <sys/utsname.h>
1326#endif
1327
1328static unsigned int noinline ecb_cold
1329ev_linux_version (void)
1330{
1331#ifdef __linux
1332 unsigned int v = 0;
1333 struct utsname buf;
1334 int i;
1335 char *p = buf.release;
1336
1337 if (uname (&buf))
1338 return 0;
1339
1340 for (i = 3+1; --i; )
1341 {
1342 unsigned int c = 0;
1343
1344 for (;;)
1345 {
1346 if (*p >= '0' && *p <= '9')
1347 c = c * 10 + *p++ - '0';
1348 else
1349 {
1350 p += *p == '.';
1351 break;
1352 }
1353 }
1354
1355 v = (v << 8) | c;
1356 }
1357
1358 return v;
1359#else
1360 return 0;
1361#endif
1362}
1363
1364/*****************************************************************************/
1365
1366#if EV_AVOID_STDIO
1367static void noinline ecb_cold
1368ev_printerr (const char *msg)
1369{
1370 write (STDERR_FILENO, msg, strlen (msg));
1371}
1372#endif
1373
425static void (*syserr_cb)(const char *msg); 1374static void (*syserr_cb)(const char *msg) EV_THROW;
426 1375
427void 1376void ecb_cold
428ev_set_syserr_cb (void (*cb)(const char *msg)) 1377ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
429{ 1378{
430 syserr_cb = cb; 1379 syserr_cb = cb;
431} 1380}
432 1381
433static void noinline 1382static void noinline ecb_cold
434ev_syserr (const char *msg) 1383ev_syserr (const char *msg)
435{ 1384{
436 if (!msg) 1385 if (!msg)
437 msg = "(libev) system error"; 1386 msg = "(libev) system error";
438 1387
439 if (syserr_cb) 1388 if (syserr_cb)
440 syserr_cb (msg); 1389 syserr_cb (msg);
441 else 1390 else
442 { 1391 {
1392#if EV_AVOID_STDIO
1393 ev_printerr (msg);
1394 ev_printerr (": ");
1395 ev_printerr (strerror (errno));
1396 ev_printerr ("\n");
1397#else
443 perror (msg); 1398 perror (msg);
1399#endif
444 abort (); 1400 abort ();
445 } 1401 }
446} 1402}
447 1403
448static void * 1404static void *
449ev_realloc_emul (void *ptr, long size) 1405ev_realloc_emul (void *ptr, long size) EV_THROW
450{ 1406{
451 /* some systems, notably openbsd and darwin, fail to properly 1407 /* some systems, notably openbsd and darwin, fail to properly
452 * implement realloc (x, 0) (as required by both ansi c-98 and 1408 * implement realloc (x, 0) (as required by both ansi c-89 and
453 * the single unix specification, so work around them here. 1409 * the single unix specification, so work around them here.
1410 * recently, also (at least) fedora and debian started breaking it,
1411 * despite documenting it otherwise.
454 */ 1412 */
455 1413
456 if (size) 1414 if (size)
457 return realloc (ptr, size); 1415 return realloc (ptr, size);
458 1416
459 free (ptr); 1417 free (ptr);
460 return 0; 1418 return 0;
461} 1419}
462 1420
463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1421static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
464 1422
465void 1423void ecb_cold
466ev_set_allocator (void *(*cb)(void *ptr, long size)) 1424ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
467{ 1425{
468 alloc = cb; 1426 alloc = cb;
469} 1427}
470 1428
471inline_speed void * 1429inline_speed void *
… …
473{ 1431{
474 ptr = alloc (ptr, size); 1432 ptr = alloc (ptr, size);
475 1433
476 if (!ptr && size) 1434 if (!ptr && size)
477 { 1435 {
1436#if EV_AVOID_STDIO
1437 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1438#else
478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1439 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1440#endif
479 abort (); 1441 abort ();
480 } 1442 }
481 1443
482 return ptr; 1444 return ptr;
483} 1445}
… …
485#define ev_malloc(size) ev_realloc (0, (size)) 1447#define ev_malloc(size) ev_realloc (0, (size))
486#define ev_free(ptr) ev_realloc ((ptr), 0) 1448#define ev_free(ptr) ev_realloc ((ptr), 0)
487 1449
488/*****************************************************************************/ 1450/*****************************************************************************/
489 1451
1452/* set in reify when reification needed */
1453#define EV_ANFD_REIFY 1
1454
490/* file descriptor info structure */ 1455/* file descriptor info structure */
491typedef struct 1456typedef struct
492{ 1457{
493 WL head; 1458 WL head;
494 unsigned char events; /* the events watched for */ 1459 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */ 1460 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
496 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1461 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
497 unsigned char unused; 1462 unsigned char unused;
498#if EV_USE_EPOLL 1463#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */ 1464 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif 1465#endif
501#if EV_SELECT_IS_WINSOCKET 1466#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
502 SOCKET handle; 1467 SOCKET handle;
1468#endif
1469#if EV_USE_IOCP
1470 OVERLAPPED or, ow;
503#endif 1471#endif
504} ANFD; 1472} ANFD;
505 1473
506/* stores the pending event set for a given watcher */ 1474/* stores the pending event set for a given watcher */
507typedef struct 1475typedef struct
… …
549 #undef VAR 1517 #undef VAR
550 }; 1518 };
551 #include "ev_wrap.h" 1519 #include "ev_wrap.h"
552 1520
553 static struct ev_loop default_loop_struct; 1521 static struct ev_loop default_loop_struct;
554 struct ev_loop *ev_default_loop_ptr; 1522 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
555 1523
556#else 1524#else
557 1525
558 ev_tstamp ev_rt_now; 1526 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
559 #define VAR(name,decl) static decl; 1527 #define VAR(name,decl) static decl;
560 #include "ev_vars.h" 1528 #include "ev_vars.h"
561 #undef VAR 1529 #undef VAR
562 1530
563 static int ev_default_loop_ptr; 1531 static int ev_default_loop_ptr;
564 1532
565#endif 1533#endif
566 1534
1535#if EV_FEATURE_API
1536# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1537# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1538# define EV_INVOKE_PENDING invoke_cb (EV_A)
1539#else
1540# define EV_RELEASE_CB (void)0
1541# define EV_ACQUIRE_CB (void)0
1542# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1543#endif
1544
1545#define EVBREAK_RECURSE 0x80
1546
567/*****************************************************************************/ 1547/*****************************************************************************/
568 1548
569#ifndef EV_HAVE_EV_TIME 1549#ifndef EV_HAVE_EV_TIME
570ev_tstamp 1550ev_tstamp
571ev_time (void) 1551ev_time (void) EV_THROW
572{ 1552{
573#if EV_USE_REALTIME 1553#if EV_USE_REALTIME
574 if (expect_true (have_realtime)) 1554 if (expect_true (have_realtime))
575 { 1555 {
576 struct timespec ts; 1556 struct timespec ts;
… …
600 return ev_time (); 1580 return ev_time ();
601} 1581}
602 1582
603#if EV_MULTIPLICITY 1583#if EV_MULTIPLICITY
604ev_tstamp 1584ev_tstamp
605ev_now (EV_P) 1585ev_now (EV_P) EV_THROW
606{ 1586{
607 return ev_rt_now; 1587 return ev_rt_now;
608} 1588}
609#endif 1589#endif
610 1590
611void 1591void
612ev_sleep (ev_tstamp delay) 1592ev_sleep (ev_tstamp delay) EV_THROW
613{ 1593{
614 if (delay > 0.) 1594 if (delay > 0.)
615 { 1595 {
616#if EV_USE_NANOSLEEP 1596#if EV_USE_NANOSLEEP
617 struct timespec ts; 1597 struct timespec ts;
618 1598
619 ts.tv_sec = (time_t)delay; 1599 EV_TS_SET (ts, delay);
620 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
621
622 nanosleep (&ts, 0); 1600 nanosleep (&ts, 0);
623#elif defined(_WIN32) 1601#elif defined _WIN32
624 Sleep ((unsigned long)(delay * 1e3)); 1602 Sleep ((unsigned long)(delay * 1e3));
625#else 1603#else
626 struct timeval tv; 1604 struct timeval tv;
627 1605
628 tv.tv_sec = (time_t)delay;
629 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
630
631 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1606 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
632 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1607 /* something not guaranteed by newer posix versions, but guaranteed */
633 /* by older ones */ 1608 /* by older ones */
1609 EV_TV_SET (tv, delay);
634 select (0, 0, 0, 0, &tv); 1610 select (0, 0, 0, 0, &tv);
635#endif 1611#endif
636 } 1612 }
637} 1613}
638 1614
639/*****************************************************************************/ 1615/*****************************************************************************/
640 1616
641#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1617#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
642 1618
643/* find a suitable new size for the given array, */ 1619/* find a suitable new size for the given array, */
644/* hopefully by rounding to a ncie-to-malloc size */ 1620/* hopefully by rounding to a nice-to-malloc size */
645inline_size int 1621inline_size int
646array_nextsize (int elem, int cur, int cnt) 1622array_nextsize (int elem, int cur, int cnt)
647{ 1623{
648 int ncur = cur + 1; 1624 int ncur = cur + 1;
649 1625
650 do 1626 do
651 ncur <<= 1; 1627 ncur <<= 1;
652 while (cnt > ncur); 1628 while (cnt > ncur);
653 1629
654 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1630 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
655 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1631 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
656 { 1632 {
657 ncur *= elem; 1633 ncur *= elem;
658 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1634 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
659 ncur = ncur - sizeof (void *) * 4; 1635 ncur = ncur - sizeof (void *) * 4;
… …
661 } 1637 }
662 1638
663 return ncur; 1639 return ncur;
664} 1640}
665 1641
666static noinline void * 1642static void * noinline ecb_cold
667array_realloc (int elem, void *base, int *cur, int cnt) 1643array_realloc (int elem, void *base, int *cur, int cnt)
668{ 1644{
669 *cur = array_nextsize (elem, *cur, cnt); 1645 *cur = array_nextsize (elem, *cur, cnt);
670 return ev_realloc (base, elem * *cur); 1646 return ev_realloc (base, elem * *cur);
671} 1647}
… …
674 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1650 memset ((void *)(base), 0, sizeof (*(base)) * (count))
675 1651
676#define array_needsize(type,base,cur,cnt,init) \ 1652#define array_needsize(type,base,cur,cnt,init) \
677 if (expect_false ((cnt) > (cur))) \ 1653 if (expect_false ((cnt) > (cur))) \
678 { \ 1654 { \
679 int ocur_ = (cur); \ 1655 int ecb_unused ocur_ = (cur); \
680 (base) = (type *)array_realloc \ 1656 (base) = (type *)array_realloc \
681 (sizeof (type), (base), &(cur), (cnt)); \ 1657 (sizeof (type), (base), &(cur), (cnt)); \
682 init ((base) + (ocur_), (cur) - ocur_); \ 1658 init ((base) + (ocur_), (cur) - ocur_); \
683 } 1659 }
684 1660
… …
702pendingcb (EV_P_ ev_prepare *w, int revents) 1678pendingcb (EV_P_ ev_prepare *w, int revents)
703{ 1679{
704} 1680}
705 1681
706void noinline 1682void noinline
707ev_feed_event (EV_P_ void *w, int revents) 1683ev_feed_event (EV_P_ void *w, int revents) EV_THROW
708{ 1684{
709 W w_ = (W)w; 1685 W w_ = (W)w;
710 int pri = ABSPRI (w_); 1686 int pri = ABSPRI (w_);
711 1687
712 if (expect_false (w_->pending)) 1688 if (expect_false (w_->pending))
… …
716 w_->pending = ++pendingcnt [pri]; 1692 w_->pending = ++pendingcnt [pri];
717 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1693 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
718 pendings [pri][w_->pending - 1].w = w_; 1694 pendings [pri][w_->pending - 1].w = w_;
719 pendings [pri][w_->pending - 1].events = revents; 1695 pendings [pri][w_->pending - 1].events = revents;
720 } 1696 }
1697
1698 pendingpri = NUMPRI - 1;
721} 1699}
722 1700
723inline_speed void 1701inline_speed void
724feed_reverse (EV_P_ W w) 1702feed_reverse (EV_P_ W w)
725{ 1703{
… …
745} 1723}
746 1724
747/*****************************************************************************/ 1725/*****************************************************************************/
748 1726
749inline_speed void 1727inline_speed void
750fd_event (EV_P_ int fd, int revents) 1728fd_event_nocheck (EV_P_ int fd, int revents)
751{ 1729{
752 ANFD *anfd = anfds + fd; 1730 ANFD *anfd = anfds + fd;
753 ev_io *w; 1731 ev_io *w;
754 1732
755 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1733 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
759 if (ev) 1737 if (ev)
760 ev_feed_event (EV_A_ (W)w, ev); 1738 ev_feed_event (EV_A_ (W)w, ev);
761 } 1739 }
762} 1740}
763 1741
1742/* do not submit kernel events for fds that have reify set */
1743/* because that means they changed while we were polling for new events */
1744inline_speed void
1745fd_event (EV_P_ int fd, int revents)
1746{
1747 ANFD *anfd = anfds + fd;
1748
1749 if (expect_true (!anfd->reify))
1750 fd_event_nocheck (EV_A_ fd, revents);
1751}
1752
764void 1753void
765ev_feed_fd_event (EV_P_ int fd, int revents) 1754ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
766{ 1755{
767 if (fd >= 0 && fd < anfdmax) 1756 if (fd >= 0 && fd < anfdmax)
768 fd_event (EV_A_ fd, revents); 1757 fd_event_nocheck (EV_A_ fd, revents);
769} 1758}
770 1759
771/* make sure the external fd watch events are in-sync */ 1760/* make sure the external fd watch events are in-sync */
772/* with the kernel/libev internal state */ 1761/* with the kernel/libev internal state */
773inline_size void 1762inline_size void
774fd_reify (EV_P) 1763fd_reify (EV_P)
775{ 1764{
776 int i; 1765 int i;
777 1766
1767#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1768 for (i = 0; i < fdchangecnt; ++i)
1769 {
1770 int fd = fdchanges [i];
1771 ANFD *anfd = anfds + fd;
1772
1773 if (anfd->reify & EV__IOFDSET && anfd->head)
1774 {
1775 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1776
1777 if (handle != anfd->handle)
1778 {
1779 unsigned long arg;
1780
1781 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1782
1783 /* handle changed, but fd didn't - we need to do it in two steps */
1784 backend_modify (EV_A_ fd, anfd->events, 0);
1785 anfd->events = 0;
1786 anfd->handle = handle;
1787 }
1788 }
1789 }
1790#endif
1791
778 for (i = 0; i < fdchangecnt; ++i) 1792 for (i = 0; i < fdchangecnt; ++i)
779 { 1793 {
780 int fd = fdchanges [i]; 1794 int fd = fdchanges [i];
781 ANFD *anfd = anfds + fd; 1795 ANFD *anfd = anfds + fd;
782 ev_io *w; 1796 ev_io *w;
783 1797
784 unsigned char events = 0; 1798 unsigned char o_events = anfd->events;
1799 unsigned char o_reify = anfd->reify;
785 1800
786 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1801 anfd->reify = 0;
787 events |= (unsigned char)w->events;
788 1802
789#if EV_SELECT_IS_WINSOCKET 1803 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
790 if (events)
791 { 1804 {
792 unsigned long arg; 1805 anfd->events = 0;
793 #ifdef EV_FD_TO_WIN32_HANDLE 1806
794 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1807 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
795 #else 1808 anfd->events |= (unsigned char)w->events;
796 anfd->handle = _get_osfhandle (fd); 1809
797 #endif 1810 if (o_events != anfd->events)
798 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1811 o_reify = EV__IOFDSET; /* actually |= */
799 } 1812 }
800#endif
801 1813
802 { 1814 if (o_reify & EV__IOFDSET)
803 unsigned char o_events = anfd->events;
804 unsigned char o_reify = anfd->reify;
805
806 anfd->reify = 0;
807 anfd->events = events;
808
809 if (o_events != events || o_reify & EV__IOFDSET)
810 backend_modify (EV_A_ fd, o_events, events); 1815 backend_modify (EV_A_ fd, o_events, anfd->events);
811 }
812 } 1816 }
813 1817
814 fdchangecnt = 0; 1818 fdchangecnt = 0;
815} 1819}
816 1820
… …
828 fdchanges [fdchangecnt - 1] = fd; 1832 fdchanges [fdchangecnt - 1] = fd;
829 } 1833 }
830} 1834}
831 1835
832/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1836/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
833inline_speed void 1837inline_speed void ecb_cold
834fd_kill (EV_P_ int fd) 1838fd_kill (EV_P_ int fd)
835{ 1839{
836 ev_io *w; 1840 ev_io *w;
837 1841
838 while ((w = (ev_io *)anfds [fd].head)) 1842 while ((w = (ev_io *)anfds [fd].head))
… …
840 ev_io_stop (EV_A_ w); 1844 ev_io_stop (EV_A_ w);
841 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1845 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
842 } 1846 }
843} 1847}
844 1848
845/* check whether the given fd is atcually valid, for error recovery */ 1849/* check whether the given fd is actually valid, for error recovery */
846inline_size int 1850inline_size int ecb_cold
847fd_valid (int fd) 1851fd_valid (int fd)
848{ 1852{
849#ifdef _WIN32 1853#ifdef _WIN32
850 return _get_osfhandle (fd) != -1; 1854 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
851#else 1855#else
852 return fcntl (fd, F_GETFD) != -1; 1856 return fcntl (fd, F_GETFD) != -1;
853#endif 1857#endif
854} 1858}
855 1859
856/* called on EBADF to verify fds */ 1860/* called on EBADF to verify fds */
857static void noinline 1861static void noinline ecb_cold
858fd_ebadf (EV_P) 1862fd_ebadf (EV_P)
859{ 1863{
860 int fd; 1864 int fd;
861 1865
862 for (fd = 0; fd < anfdmax; ++fd) 1866 for (fd = 0; fd < anfdmax; ++fd)
… …
864 if (!fd_valid (fd) && errno == EBADF) 1868 if (!fd_valid (fd) && errno == EBADF)
865 fd_kill (EV_A_ fd); 1869 fd_kill (EV_A_ fd);
866} 1870}
867 1871
868/* called on ENOMEM in select/poll to kill some fds and retry */ 1872/* called on ENOMEM in select/poll to kill some fds and retry */
869static void noinline 1873static void noinline ecb_cold
870fd_enomem (EV_P) 1874fd_enomem (EV_P)
871{ 1875{
872 int fd; 1876 int fd;
873 1877
874 for (fd = anfdmax; fd--; ) 1878 for (fd = anfdmax; fd--; )
875 if (anfds [fd].events) 1879 if (anfds [fd].events)
876 { 1880 {
877 fd_kill (EV_A_ fd); 1881 fd_kill (EV_A_ fd);
878 return; 1882 break;
879 } 1883 }
880} 1884}
881 1885
882/* usually called after fork if backend needs to re-arm all fds from scratch */ 1886/* usually called after fork if backend needs to re-arm all fds from scratch */
883static void noinline 1887static void noinline
… …
888 for (fd = 0; fd < anfdmax; ++fd) 1892 for (fd = 0; fd < anfdmax; ++fd)
889 if (anfds [fd].events) 1893 if (anfds [fd].events)
890 { 1894 {
891 anfds [fd].events = 0; 1895 anfds [fd].events = 0;
892 anfds [fd].emask = 0; 1896 anfds [fd].emask = 0;
893 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1897 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
894 } 1898 }
895} 1899}
896 1900
1901/* used to prepare libev internal fd's */
1902/* this is not fork-safe */
1903inline_speed void
1904fd_intern (int fd)
1905{
1906#ifdef _WIN32
1907 unsigned long arg = 1;
1908 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1909#else
1910 fcntl (fd, F_SETFD, FD_CLOEXEC);
1911 fcntl (fd, F_SETFL, O_NONBLOCK);
1912#endif
1913}
1914
897/*****************************************************************************/ 1915/*****************************************************************************/
898 1916
899/* 1917/*
900 * the heap functions want a real array index. array index 0 uis guaranteed to not 1918 * the heap functions want a real array index. array index 0 is guaranteed to not
901 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1919 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
902 * the branching factor of the d-tree. 1920 * the branching factor of the d-tree.
903 */ 1921 */
904 1922
905/* 1923/*
… …
973 1991
974 for (;;) 1992 for (;;)
975 { 1993 {
976 int c = k << 1; 1994 int c = k << 1;
977 1995
978 if (c > N + HEAP0 - 1) 1996 if (c >= N + HEAP0)
979 break; 1997 break;
980 1998
981 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1999 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
982 ? 1 : 0; 2000 ? 1 : 0;
983 2001
… …
1019 2037
1020/* move an element suitably so it is in a correct place */ 2038/* move an element suitably so it is in a correct place */
1021inline_size void 2039inline_size void
1022adjustheap (ANHE *heap, int N, int k) 2040adjustheap (ANHE *heap, int N, int k)
1023{ 2041{
1024 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2042 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1025 upheap (heap, k); 2043 upheap (heap, k);
1026 else 2044 else
1027 downheap (heap, N, k); 2045 downheap (heap, N, k);
1028} 2046}
1029 2047
… …
1042/*****************************************************************************/ 2060/*****************************************************************************/
1043 2061
1044/* associate signal watchers to a signal signal */ 2062/* associate signal watchers to a signal signal */
1045typedef struct 2063typedef struct
1046{ 2064{
2065 EV_ATOMIC_T pending;
2066#if EV_MULTIPLICITY
2067 EV_P;
2068#endif
1047 WL head; 2069 WL head;
1048 EV_ATOMIC_T gotsig;
1049} ANSIG; 2070} ANSIG;
1050 2071
1051static ANSIG *signals; 2072static ANSIG signals [EV_NSIG - 1];
1052static int signalmax;
1053
1054static EV_ATOMIC_T gotsig;
1055 2073
1056/*****************************************************************************/ 2074/*****************************************************************************/
1057 2075
1058/* used to prepare libev internal fd's */ 2076#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1059/* this is not fork-safe */ 2077
2078static void noinline ecb_cold
2079evpipe_init (EV_P)
2080{
2081 if (!ev_is_active (&pipe_w))
2082 {
2083 int fds [2];
2084
2085# if EV_USE_EVENTFD
2086 fds [0] = -1;
2087 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2088 if (fds [1] < 0 && errno == EINVAL)
2089 fds [1] = eventfd (0, 0);
2090
2091 if (fds [1] < 0)
2092# endif
2093 {
2094 while (pipe (fds))
2095 ev_syserr ("(libev) error creating signal/async pipe");
2096
2097 fd_intern (fds [0]);
2098 }
2099
2100 fd_intern (fds [1]);
2101
2102 evpipe [0] = fds [0];
2103
2104 if (evpipe [1] < 0)
2105 evpipe [1] = fds [1]; /* first call, set write fd */
2106 else
2107 {
2108 /* on subsequent calls, do not change evpipe [1] */
2109 /* so that evpipe_write can always rely on its value. */
2110 /* this branch does not do anything sensible on windows, */
2111 /* so must not be executed on windows */
2112
2113 dup2 (fds [1], evpipe [1]);
2114 close (fds [1]);
2115 }
2116
2117 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2118 ev_io_start (EV_A_ &pipe_w);
2119 ev_unref (EV_A); /* watcher should not keep loop alive */
2120 }
2121}
2122
1060inline_speed void 2123inline_speed void
1061fd_intern (int fd) 2124evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1062{ 2125{
1063#ifdef _WIN32 2126 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1064 unsigned long arg = 1;
1065 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1066#else
1067 fcntl (fd, F_SETFD, FD_CLOEXEC);
1068 fcntl (fd, F_SETFL, O_NONBLOCK);
1069#endif
1070}
1071 2127
1072static void noinline 2128 if (expect_true (*flag))
1073evpipe_init (EV_P) 2129 return;
1074{ 2130
1075 if (!ev_is_active (&pipe_w)) 2131 *flag = 1;
2132 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2133
2134 pipe_write_skipped = 1;
2135
2136 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2137
2138 if (pipe_write_wanted)
1076 { 2139 {
2140 int old_errno;
2141
2142 pipe_write_skipped = 0;
2143 ECB_MEMORY_FENCE_RELEASE;
2144
2145 old_errno = errno; /* save errno because write will clobber it */
2146
1077#if EV_USE_EVENTFD 2147#if EV_USE_EVENTFD
1078 if ((evfd = eventfd (0, 0)) >= 0) 2148 if (evpipe [0] < 0)
1079 { 2149 {
1080 evpipe [0] = -1; 2150 uint64_t counter = 1;
1081 fd_intern (evfd); 2151 write (evpipe [1], &counter, sizeof (uint64_t));
1082 ev_io_set (&pipe_w, evfd, EV_READ);
1083 } 2152 }
1084 else 2153 else
1085#endif 2154#endif
1086 { 2155 {
1087 while (pipe (evpipe)) 2156#ifdef _WIN32
1088 ev_syserr ("(libev) error creating signal/async pipe"); 2157 WSABUF buf;
1089 2158 DWORD sent;
1090 fd_intern (evpipe [0]); 2159 buf.buf = &buf;
1091 fd_intern (evpipe [1]); 2160 buf.len = 1;
1092 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2161 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2162#else
2163 write (evpipe [1], &(evpipe [1]), 1);
2164#endif
1093 } 2165 }
1094
1095 ev_io_start (EV_A_ &pipe_w);
1096 ev_unref (EV_A); /* watcher should not keep loop alive */
1097 }
1098}
1099
1100inline_size void
1101evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1102{
1103 if (!*flag)
1104 {
1105 int old_errno = errno; /* save errno because write might clobber it */
1106
1107 *flag = 1;
1108
1109#if EV_USE_EVENTFD
1110 if (evfd >= 0)
1111 {
1112 uint64_t counter = 1;
1113 write (evfd, &counter, sizeof (uint64_t));
1114 }
1115 else
1116#endif
1117 write (evpipe [1], &old_errno, 1);
1118 2166
1119 errno = old_errno; 2167 errno = old_errno;
1120 } 2168 }
1121} 2169}
1122 2170
1123/* called whenever the libev signal pipe */ 2171/* called whenever the libev signal pipe */
1124/* got some events (signal, async) */ 2172/* got some events (signal, async) */
1125static void 2173static void
1126pipecb (EV_P_ ev_io *iow, int revents) 2174pipecb (EV_P_ ev_io *iow, int revents)
1127{ 2175{
2176 int i;
2177
2178 if (revents & EV_READ)
2179 {
1128#if EV_USE_EVENTFD 2180#if EV_USE_EVENTFD
1129 if (evfd >= 0) 2181 if (evpipe [0] < 0)
1130 { 2182 {
1131 uint64_t counter; 2183 uint64_t counter;
1132 read (evfd, &counter, sizeof (uint64_t)); 2184 read (evpipe [1], &counter, sizeof (uint64_t));
1133 } 2185 }
1134 else 2186 else
1135#endif 2187#endif
1136 { 2188 {
1137 char dummy; 2189 char dummy[4];
2190#ifdef _WIN32
2191 WSABUF buf;
2192 DWORD recvd;
2193 DWORD flags = 0;
2194 buf.buf = dummy;
2195 buf.len = sizeof (dummy);
2196 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2197#else
1138 read (evpipe [0], &dummy, 1); 2198 read (evpipe [0], &dummy, sizeof (dummy));
2199#endif
2200 }
2201 }
2202
2203 pipe_write_skipped = 0;
2204
2205 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2206
2207#if EV_SIGNAL_ENABLE
2208 if (sig_pending)
1139 } 2209 {
2210 sig_pending = 0;
1140 2211
1141 if (gotsig && ev_is_default_loop (EV_A)) 2212 ECB_MEMORY_FENCE;
1142 {
1143 int signum;
1144 gotsig = 0;
1145 2213
1146 for (signum = signalmax; signum--; ) 2214 for (i = EV_NSIG - 1; i--; )
1147 if (signals [signum].gotsig) 2215 if (expect_false (signals [i].pending))
1148 ev_feed_signal_event (EV_A_ signum + 1); 2216 ev_feed_signal_event (EV_A_ i + 1);
1149 } 2217 }
2218#endif
1150 2219
1151#if EV_ASYNC_ENABLE 2220#if EV_ASYNC_ENABLE
1152 if (gotasync) 2221 if (async_pending)
1153 { 2222 {
1154 int i; 2223 async_pending = 0;
1155 gotasync = 0; 2224
2225 ECB_MEMORY_FENCE;
1156 2226
1157 for (i = asynccnt; i--; ) 2227 for (i = asynccnt; i--; )
1158 if (asyncs [i]->sent) 2228 if (asyncs [i]->sent)
1159 { 2229 {
1160 asyncs [i]->sent = 0; 2230 asyncs [i]->sent = 0;
2231 ECB_MEMORY_FENCE_RELEASE;
1161 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2232 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1162 } 2233 }
1163 } 2234 }
1164#endif 2235#endif
1165} 2236}
1166 2237
1167/*****************************************************************************/ 2238/*****************************************************************************/
1168 2239
2240void
2241ev_feed_signal (int signum) EV_THROW
2242{
2243#if EV_MULTIPLICITY
2244 EV_P;
2245 ECB_MEMORY_FENCE_ACQUIRE;
2246 EV_A = signals [signum - 1].loop;
2247
2248 if (!EV_A)
2249 return;
2250#endif
2251
2252 signals [signum - 1].pending = 1;
2253 evpipe_write (EV_A_ &sig_pending);
2254}
2255
1169static void 2256static void
1170ev_sighandler (int signum) 2257ev_sighandler (int signum)
1171{ 2258{
2259#ifdef _WIN32
2260 signal (signum, ev_sighandler);
2261#endif
2262
2263 ev_feed_signal (signum);
2264}
2265
2266void noinline
2267ev_feed_signal_event (EV_P_ int signum) EV_THROW
2268{
2269 WL w;
2270
2271 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2272 return;
2273
2274 --signum;
2275
1172#if EV_MULTIPLICITY 2276#if EV_MULTIPLICITY
1173 struct ev_loop *loop = &default_loop_struct; 2277 /* it is permissible to try to feed a signal to the wrong loop */
1174#endif 2278 /* or, likely more useful, feeding a signal nobody is waiting for */
1175 2279
1176#if _WIN32 2280 if (expect_false (signals [signum].loop != EV_A))
1177 signal (signum, ev_sighandler);
1178#endif
1179
1180 signals [signum - 1].gotsig = 1;
1181 evpipe_write (EV_A_ &gotsig);
1182}
1183
1184void noinline
1185ev_feed_signal_event (EV_P_ int signum)
1186{
1187 WL w;
1188
1189#if EV_MULTIPLICITY
1190 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1191#endif
1192
1193 --signum;
1194
1195 if (signum < 0 || signum >= signalmax)
1196 return; 2281 return;
2282#endif
1197 2283
1198 signals [signum].gotsig = 0; 2284 signals [signum].pending = 0;
2285 ECB_MEMORY_FENCE_RELEASE;
1199 2286
1200 for (w = signals [signum].head; w; w = w->next) 2287 for (w = signals [signum].head; w; w = w->next)
1201 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2288 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1202} 2289}
1203 2290
2291#if EV_USE_SIGNALFD
2292static void
2293sigfdcb (EV_P_ ev_io *iow, int revents)
2294{
2295 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2296
2297 for (;;)
2298 {
2299 ssize_t res = read (sigfd, si, sizeof (si));
2300
2301 /* not ISO-C, as res might be -1, but works with SuS */
2302 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2303 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2304
2305 if (res < (ssize_t)sizeof (si))
2306 break;
2307 }
2308}
2309#endif
2310
2311#endif
2312
1204/*****************************************************************************/ 2313/*****************************************************************************/
1205 2314
2315#if EV_CHILD_ENABLE
1206static WL childs [EV_PID_HASHSIZE]; 2316static WL childs [EV_PID_HASHSIZE];
1207
1208#ifndef _WIN32
1209 2317
1210static ev_signal childev; 2318static ev_signal childev;
1211 2319
1212#ifndef WIFCONTINUED 2320#ifndef WIFCONTINUED
1213# define WIFCONTINUED(status) 0 2321# define WIFCONTINUED(status) 0
… …
1218child_reap (EV_P_ int chain, int pid, int status) 2326child_reap (EV_P_ int chain, int pid, int status)
1219{ 2327{
1220 ev_child *w; 2328 ev_child *w;
1221 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2329 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1222 2330
1223 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2331 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1224 { 2332 {
1225 if ((w->pid == pid || !w->pid) 2333 if ((w->pid == pid || !w->pid)
1226 && (!traced || (w->flags & 1))) 2334 && (!traced || (w->flags & 1)))
1227 { 2335 {
1228 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2336 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1253 /* make sure we are called again until all children have been reaped */ 2361 /* make sure we are called again until all children have been reaped */
1254 /* we need to do it this way so that the callback gets called before we continue */ 2362 /* we need to do it this way so that the callback gets called before we continue */
1255 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2363 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1256 2364
1257 child_reap (EV_A_ pid, pid, status); 2365 child_reap (EV_A_ pid, pid, status);
1258 if (EV_PID_HASHSIZE > 1) 2366 if ((EV_PID_HASHSIZE) > 1)
1259 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2367 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1260} 2368}
1261 2369
1262#endif 2370#endif
1263 2371
1264/*****************************************************************************/ 2372/*****************************************************************************/
1265 2373
2374#if EV_USE_IOCP
2375# include "ev_iocp.c"
2376#endif
1266#if EV_USE_PORT 2377#if EV_USE_PORT
1267# include "ev_port.c" 2378# include "ev_port.c"
1268#endif 2379#endif
1269#if EV_USE_KQUEUE 2380#if EV_USE_KQUEUE
1270# include "ev_kqueue.c" 2381# include "ev_kqueue.c"
… …
1277#endif 2388#endif
1278#if EV_USE_SELECT 2389#if EV_USE_SELECT
1279# include "ev_select.c" 2390# include "ev_select.c"
1280#endif 2391#endif
1281 2392
1282int 2393int ecb_cold
1283ev_version_major (void) 2394ev_version_major (void) EV_THROW
1284{ 2395{
1285 return EV_VERSION_MAJOR; 2396 return EV_VERSION_MAJOR;
1286} 2397}
1287 2398
1288int 2399int ecb_cold
1289ev_version_minor (void) 2400ev_version_minor (void) EV_THROW
1290{ 2401{
1291 return EV_VERSION_MINOR; 2402 return EV_VERSION_MINOR;
1292} 2403}
1293 2404
1294/* return true if we are running with elevated privileges and should ignore env variables */ 2405/* return true if we are running with elevated privileges and should ignore env variables */
1295int inline_size 2406int inline_size ecb_cold
1296enable_secure (void) 2407enable_secure (void)
1297{ 2408{
1298#ifdef _WIN32 2409#ifdef _WIN32
1299 return 0; 2410 return 0;
1300#else 2411#else
1301 return getuid () != geteuid () 2412 return getuid () != geteuid ()
1302 || getgid () != getegid (); 2413 || getgid () != getegid ();
1303#endif 2414#endif
1304} 2415}
1305 2416
1306unsigned int 2417unsigned int ecb_cold
1307ev_supported_backends (void) 2418ev_supported_backends (void) EV_THROW
1308{ 2419{
1309 unsigned int flags = 0; 2420 unsigned int flags = 0;
1310 2421
1311 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2422 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1312 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2423 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1315 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2426 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1316 2427
1317 return flags; 2428 return flags;
1318} 2429}
1319 2430
1320unsigned int 2431unsigned int ecb_cold
1321ev_recommended_backends (void) 2432ev_recommended_backends (void) EV_THROW
1322{ 2433{
1323 unsigned int flags = ev_supported_backends (); 2434 unsigned int flags = ev_supported_backends ();
1324 2435
1325#ifndef __NetBSD__ 2436#ifndef __NetBSD__
1326 /* kqueue is borked on everything but netbsd apparently */ 2437 /* kqueue is borked on everything but netbsd apparently */
… …
1330#ifdef __APPLE__ 2441#ifdef __APPLE__
1331 /* only select works correctly on that "unix-certified" platform */ 2442 /* only select works correctly on that "unix-certified" platform */
1332 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2443 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1333 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2444 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1334#endif 2445#endif
2446#ifdef __FreeBSD__
2447 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2448#endif
1335 2449
1336 return flags; 2450 return flags;
1337} 2451}
1338 2452
2453unsigned int ecb_cold
2454ev_embeddable_backends (void) EV_THROW
2455{
2456 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2457
2458 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2459 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2460 flags &= ~EVBACKEND_EPOLL;
2461
2462 return flags;
2463}
2464
1339unsigned int 2465unsigned int
1340ev_embeddable_backends (void) 2466ev_backend (EV_P) EV_THROW
1341{ 2467{
1342 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2468 return backend;
1343
1344 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1345 /* please fix it and tell me how to detect the fix */
1346 flags &= ~EVBACKEND_EPOLL;
1347
1348 return flags;
1349} 2469}
1350 2470
2471#if EV_FEATURE_API
1351unsigned int 2472unsigned int
1352ev_backend (EV_P) 2473ev_iteration (EV_P) EV_THROW
1353{ 2474{
1354 return backend; 2475 return loop_count;
1355} 2476}
1356 2477
1357unsigned int 2478unsigned int
1358ev_loop_count (EV_P) 2479ev_depth (EV_P) EV_THROW
1359{ 2480{
1360 return loop_count; 2481 return loop_depth;
1361} 2482}
1362 2483
1363void 2484void
1364ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2485ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1365{ 2486{
1366 io_blocktime = interval; 2487 io_blocktime = interval;
1367} 2488}
1368 2489
1369void 2490void
1370ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2491ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1371{ 2492{
1372 timeout_blocktime = interval; 2493 timeout_blocktime = interval;
1373} 2494}
1374 2495
2496void
2497ev_set_userdata (EV_P_ void *data) EV_THROW
2498{
2499 userdata = data;
2500}
2501
2502void *
2503ev_userdata (EV_P) EV_THROW
2504{
2505 return userdata;
2506}
2507
2508void
2509ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2510{
2511 invoke_cb = invoke_pending_cb;
2512}
2513
2514void
2515ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2516{
2517 release_cb = release;
2518 acquire_cb = acquire;
2519}
2520#endif
2521
1375/* initialise a loop structure, must be zero-initialised */ 2522/* initialise a loop structure, must be zero-initialised */
1376static void noinline 2523static void noinline ecb_cold
1377loop_init (EV_P_ unsigned int flags) 2524loop_init (EV_P_ unsigned int flags) EV_THROW
1378{ 2525{
1379 if (!backend) 2526 if (!backend)
1380 { 2527 {
2528 origflags = flags;
2529
1381#if EV_USE_REALTIME 2530#if EV_USE_REALTIME
1382 if (!have_realtime) 2531 if (!have_realtime)
1383 { 2532 {
1384 struct timespec ts; 2533 struct timespec ts;
1385 2534
… …
1396 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2545 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1397 have_monotonic = 1; 2546 have_monotonic = 1;
1398 } 2547 }
1399#endif 2548#endif
1400 2549
1401 ev_rt_now = ev_time ();
1402 mn_now = get_clock ();
1403 now_floor = mn_now;
1404 rtmn_diff = ev_rt_now - mn_now;
1405
1406 io_blocktime = 0.;
1407 timeout_blocktime = 0.;
1408 backend = 0;
1409 backend_fd = -1;
1410 gotasync = 0;
1411#if EV_USE_INOTIFY
1412 fs_fd = -2;
1413#endif
1414
1415 /* pid check not overridable via env */ 2550 /* pid check not overridable via env */
1416#ifndef _WIN32 2551#ifndef _WIN32
1417 if (flags & EVFLAG_FORKCHECK) 2552 if (flags & EVFLAG_FORKCHECK)
1418 curpid = getpid (); 2553 curpid = getpid ();
1419#endif 2554#endif
… …
1421 if (!(flags & EVFLAG_NOENV) 2556 if (!(flags & EVFLAG_NOENV)
1422 && !enable_secure () 2557 && !enable_secure ()
1423 && getenv ("LIBEV_FLAGS")) 2558 && getenv ("LIBEV_FLAGS"))
1424 flags = atoi (getenv ("LIBEV_FLAGS")); 2559 flags = atoi (getenv ("LIBEV_FLAGS"));
1425 2560
1426 if (!(flags & 0x0000ffffU)) 2561 ev_rt_now = ev_time ();
2562 mn_now = get_clock ();
2563 now_floor = mn_now;
2564 rtmn_diff = ev_rt_now - mn_now;
2565#if EV_FEATURE_API
2566 invoke_cb = ev_invoke_pending;
2567#endif
2568
2569 io_blocktime = 0.;
2570 timeout_blocktime = 0.;
2571 backend = 0;
2572 backend_fd = -1;
2573 sig_pending = 0;
2574#if EV_ASYNC_ENABLE
2575 async_pending = 0;
2576#endif
2577 pipe_write_skipped = 0;
2578 pipe_write_wanted = 0;
2579 evpipe [0] = -1;
2580 evpipe [1] = -1;
2581#if EV_USE_INOTIFY
2582 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2583#endif
2584#if EV_USE_SIGNALFD
2585 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2586#endif
2587
2588 if (!(flags & EVBACKEND_MASK))
1427 flags |= ev_recommended_backends (); 2589 flags |= ev_recommended_backends ();
1428 2590
2591#if EV_USE_IOCP
2592 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2593#endif
1429#if EV_USE_PORT 2594#if EV_USE_PORT
1430 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2595 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1431#endif 2596#endif
1432#if EV_USE_KQUEUE 2597#if EV_USE_KQUEUE
1433 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2598 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1442 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2607 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1443#endif 2608#endif
1444 2609
1445 ev_prepare_init (&pending_w, pendingcb); 2610 ev_prepare_init (&pending_w, pendingcb);
1446 2611
2612#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1447 ev_init (&pipe_w, pipecb); 2613 ev_init (&pipe_w, pipecb);
1448 ev_set_priority (&pipe_w, EV_MAXPRI); 2614 ev_set_priority (&pipe_w, EV_MAXPRI);
2615#endif
1449 } 2616 }
1450} 2617}
1451 2618
1452/* free up a loop structure */ 2619/* free up a loop structure */
1453static void noinline 2620void ecb_cold
1454loop_destroy (EV_P) 2621ev_loop_destroy (EV_P)
1455{ 2622{
1456 int i; 2623 int i;
1457 2624
2625#if EV_MULTIPLICITY
2626 /* mimic free (0) */
2627 if (!EV_A)
2628 return;
2629#endif
2630
2631#if EV_CLEANUP_ENABLE
2632 /* queue cleanup watchers (and execute them) */
2633 if (expect_false (cleanupcnt))
2634 {
2635 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2636 EV_INVOKE_PENDING;
2637 }
2638#endif
2639
2640#if EV_CHILD_ENABLE
2641 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2642 {
2643 ev_ref (EV_A); /* child watcher */
2644 ev_signal_stop (EV_A_ &childev);
2645 }
2646#endif
2647
1458 if (ev_is_active (&pipe_w)) 2648 if (ev_is_active (&pipe_w))
1459 { 2649 {
1460 ev_ref (EV_A); /* signal watcher */ 2650 /*ev_ref (EV_A);*/
1461 ev_io_stop (EV_A_ &pipe_w); 2651 /*ev_io_stop (EV_A_ &pipe_w);*/
1462 2652
2653 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2654 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2655 }
2656
1463#if EV_USE_EVENTFD 2657#if EV_USE_SIGNALFD
1464 if (evfd >= 0) 2658 if (ev_is_active (&sigfd_w))
1465 close (evfd); 2659 close (sigfd);
1466#endif 2660#endif
1467
1468 if (evpipe [0] >= 0)
1469 {
1470 close (evpipe [0]);
1471 close (evpipe [1]);
1472 }
1473 }
1474 2661
1475#if EV_USE_INOTIFY 2662#if EV_USE_INOTIFY
1476 if (fs_fd >= 0) 2663 if (fs_fd >= 0)
1477 close (fs_fd); 2664 close (fs_fd);
1478#endif 2665#endif
1479 2666
1480 if (backend_fd >= 0) 2667 if (backend_fd >= 0)
1481 close (backend_fd); 2668 close (backend_fd);
1482 2669
2670#if EV_USE_IOCP
2671 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2672#endif
1483#if EV_USE_PORT 2673#if EV_USE_PORT
1484 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2674 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1485#endif 2675#endif
1486#if EV_USE_KQUEUE 2676#if EV_USE_KQUEUE
1487 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2677 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1502#if EV_IDLE_ENABLE 2692#if EV_IDLE_ENABLE
1503 array_free (idle, [i]); 2693 array_free (idle, [i]);
1504#endif 2694#endif
1505 } 2695 }
1506 2696
1507 ev_free (anfds); anfdmax = 0; 2697 ev_free (anfds); anfds = 0; anfdmax = 0;
1508 2698
1509 /* have to use the microsoft-never-gets-it-right macro */ 2699 /* have to use the microsoft-never-gets-it-right macro */
1510 array_free (rfeed, EMPTY); 2700 array_free (rfeed, EMPTY);
1511 array_free (fdchange, EMPTY); 2701 array_free (fdchange, EMPTY);
1512 array_free (timer, EMPTY); 2702 array_free (timer, EMPTY);
… …
1514 array_free (periodic, EMPTY); 2704 array_free (periodic, EMPTY);
1515#endif 2705#endif
1516#if EV_FORK_ENABLE 2706#if EV_FORK_ENABLE
1517 array_free (fork, EMPTY); 2707 array_free (fork, EMPTY);
1518#endif 2708#endif
2709#if EV_CLEANUP_ENABLE
2710 array_free (cleanup, EMPTY);
2711#endif
1519 array_free (prepare, EMPTY); 2712 array_free (prepare, EMPTY);
1520 array_free (check, EMPTY); 2713 array_free (check, EMPTY);
1521#if EV_ASYNC_ENABLE 2714#if EV_ASYNC_ENABLE
1522 array_free (async, EMPTY); 2715 array_free (async, EMPTY);
1523#endif 2716#endif
1524 2717
1525 backend = 0; 2718 backend = 0;
2719
2720#if EV_MULTIPLICITY
2721 if (ev_is_default_loop (EV_A))
2722#endif
2723 ev_default_loop_ptr = 0;
2724#if EV_MULTIPLICITY
2725 else
2726 ev_free (EV_A);
2727#endif
1526} 2728}
1527 2729
1528#if EV_USE_INOTIFY 2730#if EV_USE_INOTIFY
1529inline_size void infy_fork (EV_P); 2731inline_size void infy_fork (EV_P);
1530#endif 2732#endif
… …
1543#endif 2745#endif
1544#if EV_USE_INOTIFY 2746#if EV_USE_INOTIFY
1545 infy_fork (EV_A); 2747 infy_fork (EV_A);
1546#endif 2748#endif
1547 2749
2750#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1548 if (ev_is_active (&pipe_w)) 2751 if (ev_is_active (&pipe_w))
1549 { 2752 {
1550 /* this "locks" the handlers against writing to the pipe */ 2753 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1551 /* while we modify the fd vars */
1552 gotsig = 1;
1553#if EV_ASYNC_ENABLE
1554 gotasync = 1;
1555#endif
1556 2754
1557 ev_ref (EV_A); 2755 ev_ref (EV_A);
1558 ev_io_stop (EV_A_ &pipe_w); 2756 ev_io_stop (EV_A_ &pipe_w);
1559 2757
1560#if EV_USE_EVENTFD
1561 if (evfd >= 0)
1562 close (evfd);
1563#endif
1564
1565 if (evpipe [0] >= 0) 2758 if (evpipe [0] >= 0)
1566 { 2759 EV_WIN32_CLOSE_FD (evpipe [0]);
1567 close (evpipe [0]);
1568 close (evpipe [1]);
1569 }
1570 2760
1571 evpipe_init (EV_A); 2761 evpipe_init (EV_A);
1572 /* now iterate over everything, in case we missed something */ 2762 /* iterate over everything, in case we missed something before */
1573 pipecb (EV_A_ &pipe_w, EV_READ); 2763 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1574 } 2764 }
2765#endif
1575 2766
1576 postfork = 0; 2767 postfork = 0;
1577} 2768}
1578 2769
1579#if EV_MULTIPLICITY 2770#if EV_MULTIPLICITY
1580 2771
1581struct ev_loop * 2772struct ev_loop * ecb_cold
1582ev_loop_new (unsigned int flags) 2773ev_loop_new (unsigned int flags) EV_THROW
1583{ 2774{
1584 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2775 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1585 2776
1586 memset (loop, 0, sizeof (struct ev_loop)); 2777 memset (EV_A, 0, sizeof (struct ev_loop));
1587
1588 loop_init (EV_A_ flags); 2778 loop_init (EV_A_ flags);
1589 2779
1590 if (ev_backend (EV_A)) 2780 if (ev_backend (EV_A))
1591 return loop; 2781 return EV_A;
1592 2782
2783 ev_free (EV_A);
1593 return 0; 2784 return 0;
1594} 2785}
1595 2786
1596void 2787#endif /* multiplicity */
1597ev_loop_destroy (EV_P)
1598{
1599 loop_destroy (EV_A);
1600 ev_free (loop);
1601}
1602
1603void
1604ev_loop_fork (EV_P)
1605{
1606 postfork = 1; /* must be in line with ev_default_fork */
1607}
1608 2788
1609#if EV_VERIFY 2789#if EV_VERIFY
1610static void noinline 2790static void noinline ecb_cold
1611verify_watcher (EV_P_ W w) 2791verify_watcher (EV_P_ W w)
1612{ 2792{
1613 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2793 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1614 2794
1615 if (w->pending) 2795 if (w->pending)
1616 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2796 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1617} 2797}
1618 2798
1619static void noinline 2799static void noinline ecb_cold
1620verify_heap (EV_P_ ANHE *heap, int N) 2800verify_heap (EV_P_ ANHE *heap, int N)
1621{ 2801{
1622 int i; 2802 int i;
1623 2803
1624 for (i = HEAP0; i < N + HEAP0; ++i) 2804 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1629 2809
1630 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2810 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1631 } 2811 }
1632} 2812}
1633 2813
1634static void noinline 2814static void noinline ecb_cold
1635array_verify (EV_P_ W *ws, int cnt) 2815array_verify (EV_P_ W *ws, int cnt)
1636{ 2816{
1637 while (cnt--) 2817 while (cnt--)
1638 { 2818 {
1639 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2819 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1640 verify_watcher (EV_A_ ws [cnt]); 2820 verify_watcher (EV_A_ ws [cnt]);
1641 } 2821 }
1642} 2822}
1643#endif 2823#endif
1644 2824
1645void 2825#if EV_FEATURE_API
1646ev_loop_verify (EV_P) 2826void ecb_cold
2827ev_verify (EV_P) EV_THROW
1647{ 2828{
1648#if EV_VERIFY 2829#if EV_VERIFY
1649 int i; 2830 int i;
1650 WL w; 2831 WL w, w2;
1651 2832
1652 assert (activecnt >= -1); 2833 assert (activecnt >= -1);
1653 2834
1654 assert (fdchangemax >= fdchangecnt); 2835 assert (fdchangemax >= fdchangecnt);
1655 for (i = 0; i < fdchangecnt; ++i) 2836 for (i = 0; i < fdchangecnt; ++i)
1656 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2837 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1657 2838
1658 assert (anfdmax >= 0); 2839 assert (anfdmax >= 0);
1659 for (i = 0; i < anfdmax; ++i) 2840 for (i = 0; i < anfdmax; ++i)
2841 {
2842 int j = 0;
2843
1660 for (w = anfds [i].head; w; w = w->next) 2844 for (w = w2 = anfds [i].head; w; w = w->next)
1661 { 2845 {
1662 verify_watcher (EV_A_ (W)w); 2846 verify_watcher (EV_A_ (W)w);
2847
2848 if (j++ & 1)
2849 {
2850 assert (("libev: io watcher list contains a loop", w != w2));
2851 w2 = w2->next;
2852 }
2853
1663 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2854 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1664 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2855 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1665 } 2856 }
2857 }
1666 2858
1667 assert (timermax >= timercnt); 2859 assert (timermax >= timercnt);
1668 verify_heap (EV_A_ timers, timercnt); 2860 verify_heap (EV_A_ timers, timercnt);
1669 2861
1670#if EV_PERIODIC_ENABLE 2862#if EV_PERIODIC_ENABLE
… …
1685#if EV_FORK_ENABLE 2877#if EV_FORK_ENABLE
1686 assert (forkmax >= forkcnt); 2878 assert (forkmax >= forkcnt);
1687 array_verify (EV_A_ (W *)forks, forkcnt); 2879 array_verify (EV_A_ (W *)forks, forkcnt);
1688#endif 2880#endif
1689 2881
2882#if EV_CLEANUP_ENABLE
2883 assert (cleanupmax >= cleanupcnt);
2884 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2885#endif
2886
1690#if EV_ASYNC_ENABLE 2887#if EV_ASYNC_ENABLE
1691 assert (asyncmax >= asynccnt); 2888 assert (asyncmax >= asynccnt);
1692 array_verify (EV_A_ (W *)asyncs, asynccnt); 2889 array_verify (EV_A_ (W *)asyncs, asynccnt);
1693#endif 2890#endif
1694 2891
2892#if EV_PREPARE_ENABLE
1695 assert (preparemax >= preparecnt); 2893 assert (preparemax >= preparecnt);
1696 array_verify (EV_A_ (W *)prepares, preparecnt); 2894 array_verify (EV_A_ (W *)prepares, preparecnt);
2895#endif
1697 2896
2897#if EV_CHECK_ENABLE
1698 assert (checkmax >= checkcnt); 2898 assert (checkmax >= checkcnt);
1699 array_verify (EV_A_ (W *)checks, checkcnt); 2899 array_verify (EV_A_ (W *)checks, checkcnt);
2900#endif
1700 2901
1701# if 0 2902# if 0
2903#if EV_CHILD_ENABLE
1702 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2904 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1703 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2905 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2906#endif
1704# endif 2907# endif
1705#endif 2908#endif
1706} 2909}
1707 2910#endif
1708#endif /* multiplicity */
1709 2911
1710#if EV_MULTIPLICITY 2912#if EV_MULTIPLICITY
1711struct ev_loop * 2913struct ev_loop * ecb_cold
1712ev_default_loop_init (unsigned int flags)
1713#else 2914#else
1714int 2915int
2916#endif
1715ev_default_loop (unsigned int flags) 2917ev_default_loop (unsigned int flags) EV_THROW
1716#endif
1717{ 2918{
1718 if (!ev_default_loop_ptr) 2919 if (!ev_default_loop_ptr)
1719 { 2920 {
1720#if EV_MULTIPLICITY 2921#if EV_MULTIPLICITY
1721 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2922 EV_P = ev_default_loop_ptr = &default_loop_struct;
1722#else 2923#else
1723 ev_default_loop_ptr = 1; 2924 ev_default_loop_ptr = 1;
1724#endif 2925#endif
1725 2926
1726 loop_init (EV_A_ flags); 2927 loop_init (EV_A_ flags);
1727 2928
1728 if (ev_backend (EV_A)) 2929 if (ev_backend (EV_A))
1729 { 2930 {
1730#ifndef _WIN32 2931#if EV_CHILD_ENABLE
1731 ev_signal_init (&childev, childcb, SIGCHLD); 2932 ev_signal_init (&childev, childcb, SIGCHLD);
1732 ev_set_priority (&childev, EV_MAXPRI); 2933 ev_set_priority (&childev, EV_MAXPRI);
1733 ev_signal_start (EV_A_ &childev); 2934 ev_signal_start (EV_A_ &childev);
1734 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2935 ev_unref (EV_A); /* child watcher should not keep loop alive */
1735#endif 2936#endif
… …
1740 2941
1741 return ev_default_loop_ptr; 2942 return ev_default_loop_ptr;
1742} 2943}
1743 2944
1744void 2945void
1745ev_default_destroy (void) 2946ev_loop_fork (EV_P) EV_THROW
1746{ 2947{
1747#if EV_MULTIPLICITY 2948 postfork = 1;
1748 struct ev_loop *loop = ev_default_loop_ptr;
1749#endif
1750
1751 ev_default_loop_ptr = 0;
1752
1753#ifndef _WIN32
1754 ev_ref (EV_A); /* child watcher */
1755 ev_signal_stop (EV_A_ &childev);
1756#endif
1757
1758 loop_destroy (EV_A);
1759}
1760
1761void
1762ev_default_fork (void)
1763{
1764#if EV_MULTIPLICITY
1765 struct ev_loop *loop = ev_default_loop_ptr;
1766#endif
1767
1768 postfork = 1; /* must be in line with ev_loop_fork */
1769} 2949}
1770 2950
1771/*****************************************************************************/ 2951/*****************************************************************************/
1772 2952
1773void 2953void
1774ev_invoke (EV_P_ void *w, int revents) 2954ev_invoke (EV_P_ void *w, int revents)
1775{ 2955{
1776 EV_CB_INVOKE ((W)w, revents); 2956 EV_CB_INVOKE ((W)w, revents);
1777} 2957}
1778 2958
1779inline_speed void 2959unsigned int
1780call_pending (EV_P) 2960ev_pending_count (EV_P) EV_THROW
1781{ 2961{
1782 int pri; 2962 int pri;
2963 unsigned int count = 0;
1783 2964
1784 for (pri = NUMPRI; pri--; ) 2965 for (pri = NUMPRI; pri--; )
2966 count += pendingcnt [pri];
2967
2968 return count;
2969}
2970
2971void noinline
2972ev_invoke_pending (EV_P)
2973{
2974 pendingpri = NUMPRI;
2975
2976 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2977 {
2978 --pendingpri;
2979
1785 while (pendingcnt [pri]) 2980 while (pendingcnt [pendingpri])
1786 { 2981 {
1787 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2982 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1788 2983
1789 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1790 /* ^ this is no longer true, as pending_w could be here */
1791
1792 p->w->pending = 0; 2984 p->w->pending = 0;
1793 EV_CB_INVOKE (p->w, p->events); 2985 EV_CB_INVOKE (p->w, p->events);
1794 EV_FREQUENT_CHECK; 2986 EV_FREQUENT_CHECK;
1795 } 2987 }
2988 }
1796} 2989}
1797 2990
1798#if EV_IDLE_ENABLE 2991#if EV_IDLE_ENABLE
1799/* make idle watchers pending. this handles the "call-idle */ 2992/* make idle watchers pending. this handles the "call-idle */
1800/* only when higher priorities are idle" logic */ 2993/* only when higher priorities are idle" logic */
… …
1852 EV_FREQUENT_CHECK; 3045 EV_FREQUENT_CHECK;
1853 feed_reverse (EV_A_ (W)w); 3046 feed_reverse (EV_A_ (W)w);
1854 } 3047 }
1855 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3048 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1856 3049
1857 feed_reverse_done (EV_A_ EV_TIMEOUT); 3050 feed_reverse_done (EV_A_ EV_TIMER);
1858 } 3051 }
1859} 3052}
1860 3053
1861#if EV_PERIODIC_ENABLE 3054#if EV_PERIODIC_ENABLE
3055
3056static void noinline
3057periodic_recalc (EV_P_ ev_periodic *w)
3058{
3059 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3060 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3061
3062 /* the above almost always errs on the low side */
3063 while (at <= ev_rt_now)
3064 {
3065 ev_tstamp nat = at + w->interval;
3066
3067 /* when resolution fails us, we use ev_rt_now */
3068 if (expect_false (nat == at))
3069 {
3070 at = ev_rt_now;
3071 break;
3072 }
3073
3074 at = nat;
3075 }
3076
3077 ev_at (w) = at;
3078}
3079
1862/* make periodics pending */ 3080/* make periodics pending */
1863inline_size void 3081inline_size void
1864periodics_reify (EV_P) 3082periodics_reify (EV_P)
1865{ 3083{
1866 EV_FREQUENT_CHECK; 3084 EV_FREQUENT_CHECK;
1867 3085
1868 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3086 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1869 { 3087 {
1870 int feed_count = 0;
1871
1872 do 3088 do
1873 { 3089 {
1874 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3090 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1875 3091
1876 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3092 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1885 ANHE_at_cache (periodics [HEAP0]); 3101 ANHE_at_cache (periodics [HEAP0]);
1886 downheap (periodics, periodiccnt, HEAP0); 3102 downheap (periodics, periodiccnt, HEAP0);
1887 } 3103 }
1888 else if (w->interval) 3104 else if (w->interval)
1889 { 3105 {
1890 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3106 periodic_recalc (EV_A_ w);
1891 /* if next trigger time is not sufficiently in the future, put it there */
1892 /* this might happen because of floating point inexactness */
1893 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1894 {
1895 ev_at (w) += w->interval;
1896
1897 /* if interval is unreasonably low we might still have a time in the past */
1898 /* so correct this. this will make the periodic very inexact, but the user */
1899 /* has effectively asked to get triggered more often than possible */
1900 if (ev_at (w) < ev_rt_now)
1901 ev_at (w) = ev_rt_now;
1902 }
1903
1904 ANHE_at_cache (periodics [HEAP0]); 3107 ANHE_at_cache (periodics [HEAP0]);
1905 downheap (periodics, periodiccnt, HEAP0); 3108 downheap (periodics, periodiccnt, HEAP0);
1906 } 3109 }
1907 else 3110 else
1908 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3111 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1915 feed_reverse_done (EV_A_ EV_PERIODIC); 3118 feed_reverse_done (EV_A_ EV_PERIODIC);
1916 } 3119 }
1917} 3120}
1918 3121
1919/* simply recalculate all periodics */ 3122/* simply recalculate all periodics */
1920/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3123/* TODO: maybe ensure that at least one event happens when jumping forward? */
1921static void noinline 3124static void noinline ecb_cold
1922periodics_reschedule (EV_P) 3125periodics_reschedule (EV_P)
1923{ 3126{
1924 int i; 3127 int i;
1925 3128
1926 /* adjust periodics after time jump */ 3129 /* adjust periodics after time jump */
… …
1929 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3132 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1930 3133
1931 if (w->reschedule_cb) 3134 if (w->reschedule_cb)
1932 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3135 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1933 else if (w->interval) 3136 else if (w->interval)
1934 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3137 periodic_recalc (EV_A_ w);
1935 3138
1936 ANHE_at_cache (periodics [i]); 3139 ANHE_at_cache (periodics [i]);
1937 } 3140 }
1938 3141
1939 reheap (periodics, periodiccnt); 3142 reheap (periodics, periodiccnt);
1940} 3143}
1941#endif 3144#endif
1942 3145
1943/* adjust all timers by a given offset */ 3146/* adjust all timers by a given offset */
1944static void noinline 3147static void noinline ecb_cold
1945timers_reschedule (EV_P_ ev_tstamp adjust) 3148timers_reschedule (EV_P_ ev_tstamp adjust)
1946{ 3149{
1947 int i; 3150 int i;
1948 3151
1949 for (i = 0; i < timercnt; ++i) 3152 for (i = 0; i < timercnt; ++i)
… …
1953 ANHE_at_cache (*he); 3156 ANHE_at_cache (*he);
1954 } 3157 }
1955} 3158}
1956 3159
1957/* fetch new monotonic and realtime times from the kernel */ 3160/* fetch new monotonic and realtime times from the kernel */
1958/* also detetc if there was a timejump, and act accordingly */ 3161/* also detect if there was a timejump, and act accordingly */
1959inline_speed void 3162inline_speed void
1960time_update (EV_P_ ev_tstamp max_block) 3163time_update (EV_P_ ev_tstamp max_block)
1961{ 3164{
1962#if EV_USE_MONOTONIC 3165#if EV_USE_MONOTONIC
1963 if (expect_true (have_monotonic)) 3166 if (expect_true (have_monotonic))
… …
1986 * doesn't hurt either as we only do this on time-jumps or 3189 * doesn't hurt either as we only do this on time-jumps or
1987 * in the unlikely event of having been preempted here. 3190 * in the unlikely event of having been preempted here.
1988 */ 3191 */
1989 for (i = 4; --i; ) 3192 for (i = 4; --i; )
1990 { 3193 {
3194 ev_tstamp diff;
1991 rtmn_diff = ev_rt_now - mn_now; 3195 rtmn_diff = ev_rt_now - mn_now;
1992 3196
3197 diff = odiff - rtmn_diff;
3198
1993 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3199 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1994 return; /* all is well */ 3200 return; /* all is well */
1995 3201
1996 ev_rt_now = ev_time (); 3202 ev_rt_now = ev_time ();
1997 mn_now = get_clock (); 3203 mn_now = get_clock ();
1998 now_floor = mn_now; 3204 now_floor = mn_now;
… …
2020 3226
2021 mn_now = ev_rt_now; 3227 mn_now = ev_rt_now;
2022 } 3228 }
2023} 3229}
2024 3230
2025static int loop_done; 3231int
2026
2027void
2028ev_loop (EV_P_ int flags) 3232ev_run (EV_P_ int flags)
2029{ 3233{
3234#if EV_FEATURE_API
3235 ++loop_depth;
3236#endif
3237
3238 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3239
2030 loop_done = EVUNLOOP_CANCEL; 3240 loop_done = EVBREAK_CANCEL;
2031 3241
2032 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3242 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2033 3243
2034 do 3244 do
2035 { 3245 {
2036#if EV_VERIFY >= 2 3246#if EV_VERIFY >= 2
2037 ev_loop_verify (EV_A); 3247 ev_verify (EV_A);
2038#endif 3248#endif
2039 3249
2040#ifndef _WIN32 3250#ifndef _WIN32
2041 if (expect_false (curpid)) /* penalise the forking check even more */ 3251 if (expect_false (curpid)) /* penalise the forking check even more */
2042 if (expect_false (getpid () != curpid)) 3252 if (expect_false (getpid () != curpid))
… …
2050 /* we might have forked, so queue fork handlers */ 3260 /* we might have forked, so queue fork handlers */
2051 if (expect_false (postfork)) 3261 if (expect_false (postfork))
2052 if (forkcnt) 3262 if (forkcnt)
2053 { 3263 {
2054 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3264 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2055 call_pending (EV_A); 3265 EV_INVOKE_PENDING;
2056 } 3266 }
2057#endif 3267#endif
2058 3268
3269#if EV_PREPARE_ENABLE
2059 /* queue prepare watchers (and execute them) */ 3270 /* queue prepare watchers (and execute them) */
2060 if (expect_false (preparecnt)) 3271 if (expect_false (preparecnt))
2061 { 3272 {
2062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3273 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2063 call_pending (EV_A); 3274 EV_INVOKE_PENDING;
2064 } 3275 }
3276#endif
3277
3278 if (expect_false (loop_done))
3279 break;
2065 3280
2066 /* we might have forked, so reify kernel state if necessary */ 3281 /* we might have forked, so reify kernel state if necessary */
2067 if (expect_false (postfork)) 3282 if (expect_false (postfork))
2068 loop_fork (EV_A); 3283 loop_fork (EV_A);
2069 3284
… …
2073 /* calculate blocking time */ 3288 /* calculate blocking time */
2074 { 3289 {
2075 ev_tstamp waittime = 0.; 3290 ev_tstamp waittime = 0.;
2076 ev_tstamp sleeptime = 0.; 3291 ev_tstamp sleeptime = 0.;
2077 3292
3293 /* remember old timestamp for io_blocktime calculation */
3294 ev_tstamp prev_mn_now = mn_now;
3295
3296 /* update time to cancel out callback processing overhead */
3297 time_update (EV_A_ 1e100);
3298
3299 /* from now on, we want a pipe-wake-up */
3300 pipe_write_wanted = 1;
3301
3302 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3303
2078 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3304 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2079 { 3305 {
2080 /* update time to cancel out callback processing overhead */
2081 time_update (EV_A_ 1e100);
2082
2083 waittime = MAX_BLOCKTIME; 3306 waittime = MAX_BLOCKTIME;
2084 3307
2085 if (timercnt) 3308 if (timercnt)
2086 { 3309 {
2087 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3310 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2088 if (waittime > to) waittime = to; 3311 if (waittime > to) waittime = to;
2089 } 3312 }
2090 3313
2091#if EV_PERIODIC_ENABLE 3314#if EV_PERIODIC_ENABLE
2092 if (periodiccnt) 3315 if (periodiccnt)
2093 { 3316 {
2094 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3317 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2095 if (waittime > to) waittime = to; 3318 if (waittime > to) waittime = to;
2096 } 3319 }
2097#endif 3320#endif
2098 3321
3322 /* don't let timeouts decrease the waittime below timeout_blocktime */
2099 if (expect_false (waittime < timeout_blocktime)) 3323 if (expect_false (waittime < timeout_blocktime))
2100 waittime = timeout_blocktime; 3324 waittime = timeout_blocktime;
2101 3325
2102 sleeptime = waittime - backend_fudge; 3326 /* at this point, we NEED to wait, so we have to ensure */
3327 /* to pass a minimum nonzero value to the backend */
3328 if (expect_false (waittime < backend_mintime))
3329 waittime = backend_mintime;
2103 3330
3331 /* extra check because io_blocktime is commonly 0 */
2104 if (expect_true (sleeptime > io_blocktime)) 3332 if (expect_false (io_blocktime))
2105 sleeptime = io_blocktime;
2106
2107 if (sleeptime)
2108 { 3333 {
3334 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3335
3336 if (sleeptime > waittime - backend_mintime)
3337 sleeptime = waittime - backend_mintime;
3338
3339 if (expect_true (sleeptime > 0.))
3340 {
2109 ev_sleep (sleeptime); 3341 ev_sleep (sleeptime);
2110 waittime -= sleeptime; 3342 waittime -= sleeptime;
3343 }
2111 } 3344 }
2112 } 3345 }
2113 3346
3347#if EV_FEATURE_API
2114 ++loop_count; 3348 ++loop_count;
3349#endif
3350 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2115 backend_poll (EV_A_ waittime); 3351 backend_poll (EV_A_ waittime);
3352 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3353
3354 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3355
3356 ECB_MEMORY_FENCE_ACQUIRE;
3357 if (pipe_write_skipped)
3358 {
3359 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3360 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3361 }
3362
2116 3363
2117 /* update ev_rt_now, do magic */ 3364 /* update ev_rt_now, do magic */
2118 time_update (EV_A_ waittime + sleeptime); 3365 time_update (EV_A_ waittime + sleeptime);
2119 } 3366 }
2120 3367
… …
2127#if EV_IDLE_ENABLE 3374#if EV_IDLE_ENABLE
2128 /* queue idle watchers unless other events are pending */ 3375 /* queue idle watchers unless other events are pending */
2129 idle_reify (EV_A); 3376 idle_reify (EV_A);
2130#endif 3377#endif
2131 3378
3379#if EV_CHECK_ENABLE
2132 /* queue check watchers, to be executed first */ 3380 /* queue check watchers, to be executed first */
2133 if (expect_false (checkcnt)) 3381 if (expect_false (checkcnt))
2134 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3382 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3383#endif
2135 3384
2136 call_pending (EV_A); 3385 EV_INVOKE_PENDING;
2137 } 3386 }
2138 while (expect_true ( 3387 while (expect_true (
2139 activecnt 3388 activecnt
2140 && !loop_done 3389 && !loop_done
2141 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3390 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2142 )); 3391 ));
2143 3392
2144 if (loop_done == EVUNLOOP_ONE) 3393 if (loop_done == EVBREAK_ONE)
2145 loop_done = EVUNLOOP_CANCEL; 3394 loop_done = EVBREAK_CANCEL;
3395
3396#if EV_FEATURE_API
3397 --loop_depth;
3398#endif
3399
3400 return activecnt;
2146} 3401}
2147 3402
2148void 3403void
2149ev_unloop (EV_P_ int how) 3404ev_break (EV_P_ int how) EV_THROW
2150{ 3405{
2151 loop_done = how; 3406 loop_done = how;
2152} 3407}
2153 3408
2154void 3409void
2155ev_ref (EV_P) 3410ev_ref (EV_P) EV_THROW
2156{ 3411{
2157 ++activecnt; 3412 ++activecnt;
2158} 3413}
2159 3414
2160void 3415void
2161ev_unref (EV_P) 3416ev_unref (EV_P) EV_THROW
2162{ 3417{
2163 --activecnt; 3418 --activecnt;
2164} 3419}
2165 3420
2166void 3421void
2167ev_now_update (EV_P) 3422ev_now_update (EV_P) EV_THROW
2168{ 3423{
2169 time_update (EV_A_ 1e100); 3424 time_update (EV_A_ 1e100);
2170} 3425}
2171 3426
2172void 3427void
2173ev_suspend (EV_P) 3428ev_suspend (EV_P) EV_THROW
2174{ 3429{
2175 ev_now_update (EV_A); 3430 ev_now_update (EV_A);
2176} 3431}
2177 3432
2178void 3433void
2179ev_resume (EV_P) 3434ev_resume (EV_P) EV_THROW
2180{ 3435{
2181 ev_tstamp mn_prev = mn_now; 3436 ev_tstamp mn_prev = mn_now;
2182 3437
2183 ev_now_update (EV_A); 3438 ev_now_update (EV_A);
2184 timers_reschedule (EV_A_ mn_now - mn_prev); 3439 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2201inline_size void 3456inline_size void
2202wlist_del (WL *head, WL elem) 3457wlist_del (WL *head, WL elem)
2203{ 3458{
2204 while (*head) 3459 while (*head)
2205 { 3460 {
2206 if (*head == elem) 3461 if (expect_true (*head == elem))
2207 { 3462 {
2208 *head = elem->next; 3463 *head = elem->next;
2209 return; 3464 break;
2210 } 3465 }
2211 3466
2212 head = &(*head)->next; 3467 head = &(*head)->next;
2213 } 3468 }
2214} 3469}
… …
2223 w->pending = 0; 3478 w->pending = 0;
2224 } 3479 }
2225} 3480}
2226 3481
2227int 3482int
2228ev_clear_pending (EV_P_ void *w) 3483ev_clear_pending (EV_P_ void *w) EV_THROW
2229{ 3484{
2230 W w_ = (W)w; 3485 W w_ = (W)w;
2231 int pending = w_->pending; 3486 int pending = w_->pending;
2232 3487
2233 if (expect_true (pending)) 3488 if (expect_true (pending))
… …
2242} 3497}
2243 3498
2244inline_size void 3499inline_size void
2245pri_adjust (EV_P_ W w) 3500pri_adjust (EV_P_ W w)
2246{ 3501{
2247 int pri = w->priority; 3502 int pri = ev_priority (w);
2248 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3503 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2249 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3504 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2250 w->priority = pri; 3505 ev_set_priority (w, pri);
2251} 3506}
2252 3507
2253inline_speed void 3508inline_speed void
2254ev_start (EV_P_ W w, int active) 3509ev_start (EV_P_ W w, int active)
2255{ 3510{
… …
2266} 3521}
2267 3522
2268/*****************************************************************************/ 3523/*****************************************************************************/
2269 3524
2270void noinline 3525void noinline
2271ev_io_start (EV_P_ ev_io *w) 3526ev_io_start (EV_P_ ev_io *w) EV_THROW
2272{ 3527{
2273 int fd = w->fd; 3528 int fd = w->fd;
2274 3529
2275 if (expect_false (ev_is_active (w))) 3530 if (expect_false (ev_is_active (w)))
2276 return; 3531 return;
2277 3532
2278 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3533 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2279 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3534 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2280 3535
2281 EV_FREQUENT_CHECK; 3536 EV_FREQUENT_CHECK;
2282 3537
2283 ev_start (EV_A_ (W)w, 1); 3538 ev_start (EV_A_ (W)w, 1);
2284 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3539 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2285 wlist_add (&anfds[fd].head, (WL)w); 3540 wlist_add (&anfds[fd].head, (WL)w);
2286 3541
3542 /* common bug, apparently */
3543 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3544
2287 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3545 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2288 w->events &= ~EV__IOFDSET; 3546 w->events &= ~EV__IOFDSET;
2289 3547
2290 EV_FREQUENT_CHECK; 3548 EV_FREQUENT_CHECK;
2291} 3549}
2292 3550
2293void noinline 3551void noinline
2294ev_io_stop (EV_P_ ev_io *w) 3552ev_io_stop (EV_P_ ev_io *w) EV_THROW
2295{ 3553{
2296 clear_pending (EV_A_ (W)w); 3554 clear_pending (EV_A_ (W)w);
2297 if (expect_false (!ev_is_active (w))) 3555 if (expect_false (!ev_is_active (w)))
2298 return; 3556 return;
2299 3557
… …
2302 EV_FREQUENT_CHECK; 3560 EV_FREQUENT_CHECK;
2303 3561
2304 wlist_del (&anfds[w->fd].head, (WL)w); 3562 wlist_del (&anfds[w->fd].head, (WL)w);
2305 ev_stop (EV_A_ (W)w); 3563 ev_stop (EV_A_ (W)w);
2306 3564
2307 fd_change (EV_A_ w->fd, 1); 3565 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2308 3566
2309 EV_FREQUENT_CHECK; 3567 EV_FREQUENT_CHECK;
2310} 3568}
2311 3569
2312void noinline 3570void noinline
2313ev_timer_start (EV_P_ ev_timer *w) 3571ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2314{ 3572{
2315 if (expect_false (ev_is_active (w))) 3573 if (expect_false (ev_is_active (w)))
2316 return; 3574 return;
2317 3575
2318 ev_at (w) += mn_now; 3576 ev_at (w) += mn_now;
… …
2332 3590
2333 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3591 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2334} 3592}
2335 3593
2336void noinline 3594void noinline
2337ev_timer_stop (EV_P_ ev_timer *w) 3595ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2338{ 3596{
2339 clear_pending (EV_A_ (W)w); 3597 clear_pending (EV_A_ (W)w);
2340 if (expect_false (!ev_is_active (w))) 3598 if (expect_false (!ev_is_active (w)))
2341 return; 3599 return;
2342 3600
… …
2354 timers [active] = timers [timercnt + HEAP0]; 3612 timers [active] = timers [timercnt + HEAP0];
2355 adjustheap (timers, timercnt, active); 3613 adjustheap (timers, timercnt, active);
2356 } 3614 }
2357 } 3615 }
2358 3616
2359 EV_FREQUENT_CHECK;
2360
2361 ev_at (w) -= mn_now; 3617 ev_at (w) -= mn_now;
2362 3618
2363 ev_stop (EV_A_ (W)w); 3619 ev_stop (EV_A_ (W)w);
3620
3621 EV_FREQUENT_CHECK;
2364} 3622}
2365 3623
2366void noinline 3624void noinline
2367ev_timer_again (EV_P_ ev_timer *w) 3625ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2368{ 3626{
2369 EV_FREQUENT_CHECK; 3627 EV_FREQUENT_CHECK;
3628
3629 clear_pending (EV_A_ (W)w);
2370 3630
2371 if (ev_is_active (w)) 3631 if (ev_is_active (w))
2372 { 3632 {
2373 if (w->repeat) 3633 if (w->repeat)
2374 { 3634 {
… …
2386 } 3646 }
2387 3647
2388 EV_FREQUENT_CHECK; 3648 EV_FREQUENT_CHECK;
2389} 3649}
2390 3650
3651ev_tstamp
3652ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3653{
3654 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3655}
3656
2391#if EV_PERIODIC_ENABLE 3657#if EV_PERIODIC_ENABLE
2392void noinline 3658void noinline
2393ev_periodic_start (EV_P_ ev_periodic *w) 3659ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2394{ 3660{
2395 if (expect_false (ev_is_active (w))) 3661 if (expect_false (ev_is_active (w)))
2396 return; 3662 return;
2397 3663
2398 if (w->reschedule_cb) 3664 if (w->reschedule_cb)
2399 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3665 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2400 else if (w->interval) 3666 else if (w->interval)
2401 { 3667 {
2402 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3668 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2403 /* this formula differs from the one in periodic_reify because we do not always round up */ 3669 periodic_recalc (EV_A_ w);
2404 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2405 } 3670 }
2406 else 3671 else
2407 ev_at (w) = w->offset; 3672 ev_at (w) = w->offset;
2408 3673
2409 EV_FREQUENT_CHECK; 3674 EV_FREQUENT_CHECK;
… …
2419 3684
2420 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3685 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2421} 3686}
2422 3687
2423void noinline 3688void noinline
2424ev_periodic_stop (EV_P_ ev_periodic *w) 3689ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2425{ 3690{
2426 clear_pending (EV_A_ (W)w); 3691 clear_pending (EV_A_ (W)w);
2427 if (expect_false (!ev_is_active (w))) 3692 if (expect_false (!ev_is_active (w)))
2428 return; 3693 return;
2429 3694
… …
2441 periodics [active] = periodics [periodiccnt + HEAP0]; 3706 periodics [active] = periodics [periodiccnt + HEAP0];
2442 adjustheap (periodics, periodiccnt, active); 3707 adjustheap (periodics, periodiccnt, active);
2443 } 3708 }
2444 } 3709 }
2445 3710
2446 EV_FREQUENT_CHECK;
2447
2448 ev_stop (EV_A_ (W)w); 3711 ev_stop (EV_A_ (W)w);
3712
3713 EV_FREQUENT_CHECK;
2449} 3714}
2450 3715
2451void noinline 3716void noinline
2452ev_periodic_again (EV_P_ ev_periodic *w) 3717ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2453{ 3718{
2454 /* TODO: use adjustheap and recalculation */ 3719 /* TODO: use adjustheap and recalculation */
2455 ev_periodic_stop (EV_A_ w); 3720 ev_periodic_stop (EV_A_ w);
2456 ev_periodic_start (EV_A_ w); 3721 ev_periodic_start (EV_A_ w);
2457} 3722}
… …
2459 3724
2460#ifndef SA_RESTART 3725#ifndef SA_RESTART
2461# define SA_RESTART 0 3726# define SA_RESTART 0
2462#endif 3727#endif
2463 3728
3729#if EV_SIGNAL_ENABLE
3730
2464void noinline 3731void noinline
2465ev_signal_start (EV_P_ ev_signal *w) 3732ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2466{ 3733{
2467#if EV_MULTIPLICITY
2468 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2469#endif
2470 if (expect_false (ev_is_active (w))) 3734 if (expect_false (ev_is_active (w)))
2471 return; 3735 return;
2472 3736
2473 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3737 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2474 3738
2475 evpipe_init (EV_A); 3739#if EV_MULTIPLICITY
3740 assert (("libev: a signal must not be attached to two different loops",
3741 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2476 3742
2477 EV_FREQUENT_CHECK; 3743 signals [w->signum - 1].loop = EV_A;
3744 ECB_MEMORY_FENCE_RELEASE;
3745#endif
2478 3746
3747 EV_FREQUENT_CHECK;
3748
3749#if EV_USE_SIGNALFD
3750 if (sigfd == -2)
2479 { 3751 {
2480#ifndef _WIN32 3752 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2481 sigset_t full, prev; 3753 if (sigfd < 0 && errno == EINVAL)
2482 sigfillset (&full); 3754 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2483 sigprocmask (SIG_SETMASK, &full, &prev);
2484#endif
2485 3755
2486 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3756 if (sigfd >= 0)
3757 {
3758 fd_intern (sigfd); /* doing it twice will not hurt */
2487 3759
2488#ifndef _WIN32 3760 sigemptyset (&sigfd_set);
2489 sigprocmask (SIG_SETMASK, &prev, 0); 3761
2490#endif 3762 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3763 ev_set_priority (&sigfd_w, EV_MAXPRI);
3764 ev_io_start (EV_A_ &sigfd_w);
3765 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3766 }
2491 } 3767 }
3768
3769 if (sigfd >= 0)
3770 {
3771 /* TODO: check .head */
3772 sigaddset (&sigfd_set, w->signum);
3773 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3774
3775 signalfd (sigfd, &sigfd_set, 0);
3776 }
3777#endif
2492 3778
2493 ev_start (EV_A_ (W)w, 1); 3779 ev_start (EV_A_ (W)w, 1);
2494 wlist_add (&signals [w->signum - 1].head, (WL)w); 3780 wlist_add (&signals [w->signum - 1].head, (WL)w);
2495 3781
2496 if (!((WL)w)->next) 3782 if (!((WL)w)->next)
3783# if EV_USE_SIGNALFD
3784 if (sigfd < 0) /*TODO*/
3785# endif
2497 { 3786 {
2498#if _WIN32 3787# ifdef _WIN32
3788 evpipe_init (EV_A);
3789
2499 signal (w->signum, ev_sighandler); 3790 signal (w->signum, ev_sighandler);
2500#else 3791# else
2501 struct sigaction sa; 3792 struct sigaction sa;
3793
3794 evpipe_init (EV_A);
3795
2502 sa.sa_handler = ev_sighandler; 3796 sa.sa_handler = ev_sighandler;
2503 sigfillset (&sa.sa_mask); 3797 sigfillset (&sa.sa_mask);
2504 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3798 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2505 sigaction (w->signum, &sa, 0); 3799 sigaction (w->signum, &sa, 0);
3800
3801 if (origflags & EVFLAG_NOSIGMASK)
3802 {
3803 sigemptyset (&sa.sa_mask);
3804 sigaddset (&sa.sa_mask, w->signum);
3805 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3806 }
2506#endif 3807#endif
2507 } 3808 }
2508 3809
2509 EV_FREQUENT_CHECK; 3810 EV_FREQUENT_CHECK;
2510} 3811}
2511 3812
2512void noinline 3813void noinline
2513ev_signal_stop (EV_P_ ev_signal *w) 3814ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2514{ 3815{
2515 clear_pending (EV_A_ (W)w); 3816 clear_pending (EV_A_ (W)w);
2516 if (expect_false (!ev_is_active (w))) 3817 if (expect_false (!ev_is_active (w)))
2517 return; 3818 return;
2518 3819
… …
2520 3821
2521 wlist_del (&signals [w->signum - 1].head, (WL)w); 3822 wlist_del (&signals [w->signum - 1].head, (WL)w);
2522 ev_stop (EV_A_ (W)w); 3823 ev_stop (EV_A_ (W)w);
2523 3824
2524 if (!signals [w->signum - 1].head) 3825 if (!signals [w->signum - 1].head)
3826 {
3827#if EV_MULTIPLICITY
3828 signals [w->signum - 1].loop = 0; /* unattach from signal */
3829#endif
3830#if EV_USE_SIGNALFD
3831 if (sigfd >= 0)
3832 {
3833 sigset_t ss;
3834
3835 sigemptyset (&ss);
3836 sigaddset (&ss, w->signum);
3837 sigdelset (&sigfd_set, w->signum);
3838
3839 signalfd (sigfd, &sigfd_set, 0);
3840 sigprocmask (SIG_UNBLOCK, &ss, 0);
3841 }
3842 else
3843#endif
2525 signal (w->signum, SIG_DFL); 3844 signal (w->signum, SIG_DFL);
3845 }
2526 3846
2527 EV_FREQUENT_CHECK; 3847 EV_FREQUENT_CHECK;
2528} 3848}
3849
3850#endif
3851
3852#if EV_CHILD_ENABLE
2529 3853
2530void 3854void
2531ev_child_start (EV_P_ ev_child *w) 3855ev_child_start (EV_P_ ev_child *w) EV_THROW
2532{ 3856{
2533#if EV_MULTIPLICITY 3857#if EV_MULTIPLICITY
2534 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3858 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2535#endif 3859#endif
2536 if (expect_false (ev_is_active (w))) 3860 if (expect_false (ev_is_active (w)))
2537 return; 3861 return;
2538 3862
2539 EV_FREQUENT_CHECK; 3863 EV_FREQUENT_CHECK;
2540 3864
2541 ev_start (EV_A_ (W)w, 1); 3865 ev_start (EV_A_ (W)w, 1);
2542 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3866 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2543 3867
2544 EV_FREQUENT_CHECK; 3868 EV_FREQUENT_CHECK;
2545} 3869}
2546 3870
2547void 3871void
2548ev_child_stop (EV_P_ ev_child *w) 3872ev_child_stop (EV_P_ ev_child *w) EV_THROW
2549{ 3873{
2550 clear_pending (EV_A_ (W)w); 3874 clear_pending (EV_A_ (W)w);
2551 if (expect_false (!ev_is_active (w))) 3875 if (expect_false (!ev_is_active (w)))
2552 return; 3876 return;
2553 3877
2554 EV_FREQUENT_CHECK; 3878 EV_FREQUENT_CHECK;
2555 3879
2556 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3880 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2557 ev_stop (EV_A_ (W)w); 3881 ev_stop (EV_A_ (W)w);
2558 3882
2559 EV_FREQUENT_CHECK; 3883 EV_FREQUENT_CHECK;
2560} 3884}
3885
3886#endif
2561 3887
2562#if EV_STAT_ENABLE 3888#if EV_STAT_ENABLE
2563 3889
2564# ifdef _WIN32 3890# ifdef _WIN32
2565# undef lstat 3891# undef lstat
… …
2571#define MIN_STAT_INTERVAL 0.1074891 3897#define MIN_STAT_INTERVAL 0.1074891
2572 3898
2573static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3899static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2574 3900
2575#if EV_USE_INOTIFY 3901#if EV_USE_INOTIFY
2576# define EV_INOTIFY_BUFSIZE 8192 3902
3903/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3904# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2577 3905
2578static void noinline 3906static void noinline
2579infy_add (EV_P_ ev_stat *w) 3907infy_add (EV_P_ ev_stat *w)
2580{ 3908{
2581 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); 3909 w->wd = inotify_add_watch (fs_fd, w->path,
3910 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3911 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3912 | IN_DONT_FOLLOW | IN_MASK_ADD);
2582 3913
2583 if (w->wd < 0) 3914 if (w->wd >= 0)
3915 {
3916 struct statfs sfs;
3917
3918 /* now local changes will be tracked by inotify, but remote changes won't */
3919 /* unless the filesystem is known to be local, we therefore still poll */
3920 /* also do poll on <2.6.25, but with normal frequency */
3921
3922 if (!fs_2625)
3923 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3924 else if (!statfs (w->path, &sfs)
3925 && (sfs.f_type == 0x1373 /* devfs */
3926 || sfs.f_type == 0x4006 /* fat */
3927 || sfs.f_type == 0x4d44 /* msdos */
3928 || sfs.f_type == 0xEF53 /* ext2/3 */
3929 || sfs.f_type == 0x72b6 /* jffs2 */
3930 || sfs.f_type == 0x858458f6 /* ramfs */
3931 || sfs.f_type == 0x5346544e /* ntfs */
3932 || sfs.f_type == 0x3153464a /* jfs */
3933 || sfs.f_type == 0x9123683e /* btrfs */
3934 || sfs.f_type == 0x52654973 /* reiser3 */
3935 || sfs.f_type == 0x01021994 /* tmpfs */
3936 || sfs.f_type == 0x58465342 /* xfs */))
3937 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3938 else
3939 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2584 { 3940 }
3941 else
3942 {
3943 /* can't use inotify, continue to stat */
2585 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3944 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2586 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2587 3945
2588 /* monitor some parent directory for speedup hints */ 3946 /* if path is not there, monitor some parent directory for speedup hints */
2589 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3947 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2590 /* but an efficiency issue only */ 3948 /* but an efficiency issue only */
2591 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3949 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2592 { 3950 {
2593 char path [4096]; 3951 char path [4096];
… …
2603 if (!pend || pend == path) 3961 if (!pend || pend == path)
2604 break; 3962 break;
2605 3963
2606 *pend = 0; 3964 *pend = 0;
2607 w->wd = inotify_add_watch (fs_fd, path, mask); 3965 w->wd = inotify_add_watch (fs_fd, path, mask);
2608 } 3966 }
2609 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3967 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2610 } 3968 }
2611 } 3969 }
2612 3970
2613 if (w->wd >= 0) 3971 if (w->wd >= 0)
2614 {
2615 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3972 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2616 3973
2617 /* now local changes will be tracked by inotify, but remote changes won't */ 3974 /* now re-arm timer, if required */
2618 /* unless the filesystem it known to be local, we therefore still poll */ 3975 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2619 /* also do poll on <2.6.25, but with normal frequency */
2620 struct statfs sfs;
2621
2622 if (fs_2625 && !statfs (w->path, &sfs))
2623 if (sfs.f_type == 0x1373 /* devfs */
2624 || sfs.f_type == 0xEF53 /* ext2/3 */
2625 || sfs.f_type == 0x3153464a /* jfs */
2626 || sfs.f_type == 0x52654973 /* reiser3 */
2627 || sfs.f_type == 0x01021994 /* tempfs */
2628 || sfs.f_type == 0x58465342 /* xfs */)
2629 return;
2630
2631 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2632 ev_timer_again (EV_A_ &w->timer); 3976 ev_timer_again (EV_A_ &w->timer);
2633 } 3977 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2634} 3978}
2635 3979
2636static void noinline 3980static void noinline
2637infy_del (EV_P_ ev_stat *w) 3981infy_del (EV_P_ ev_stat *w)
2638{ 3982{
… …
2641 3985
2642 if (wd < 0) 3986 if (wd < 0)
2643 return; 3987 return;
2644 3988
2645 w->wd = -2; 3989 w->wd = -2;
2646 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3990 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2647 wlist_del (&fs_hash [slot].head, (WL)w); 3991 wlist_del (&fs_hash [slot].head, (WL)w);
2648 3992
2649 /* remove this watcher, if others are watching it, they will rearm */ 3993 /* remove this watcher, if others are watching it, they will rearm */
2650 inotify_rm_watch (fs_fd, wd); 3994 inotify_rm_watch (fs_fd, wd);
2651} 3995}
… …
2653static void noinline 3997static void noinline
2654infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3998infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2655{ 3999{
2656 if (slot < 0) 4000 if (slot < 0)
2657 /* overflow, need to check for all hash slots */ 4001 /* overflow, need to check for all hash slots */
2658 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4002 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2659 infy_wd (EV_A_ slot, wd, ev); 4003 infy_wd (EV_A_ slot, wd, ev);
2660 else 4004 else
2661 { 4005 {
2662 WL w_; 4006 WL w_;
2663 4007
2664 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4008 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2665 { 4009 {
2666 ev_stat *w = (ev_stat *)w_; 4010 ev_stat *w = (ev_stat *)w_;
2667 w_ = w_->next; /* lets us remove this watcher and all before it */ 4011 w_ = w_->next; /* lets us remove this watcher and all before it */
2668 4012
2669 if (w->wd == wd || wd == -1) 4013 if (w->wd == wd || wd == -1)
2670 { 4014 {
2671 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4015 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2672 { 4016 {
2673 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4017 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2674 w->wd = -1; 4018 w->wd = -1;
2675 infy_add (EV_A_ w); /* re-add, no matter what */ 4019 infy_add (EV_A_ w); /* re-add, no matter what */
2676 } 4020 }
2677 4021
2678 stat_timer_cb (EV_A_ &w->timer, 0); 4022 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2683 4027
2684static void 4028static void
2685infy_cb (EV_P_ ev_io *w, int revents) 4029infy_cb (EV_P_ ev_io *w, int revents)
2686{ 4030{
2687 char buf [EV_INOTIFY_BUFSIZE]; 4031 char buf [EV_INOTIFY_BUFSIZE];
2688 struct inotify_event *ev = (struct inotify_event *)buf;
2689 int ofs; 4032 int ofs;
2690 int len = read (fs_fd, buf, sizeof (buf)); 4033 int len = read (fs_fd, buf, sizeof (buf));
2691 4034
2692 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4035 for (ofs = 0; ofs < len; )
4036 {
4037 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2693 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4038 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4039 ofs += sizeof (struct inotify_event) + ev->len;
4040 }
2694} 4041}
2695 4042
2696inline_size void 4043inline_size void ecb_cold
2697check_2625 (EV_P) 4044ev_check_2625 (EV_P)
2698{ 4045{
2699 /* kernels < 2.6.25 are borked 4046 /* kernels < 2.6.25 are borked
2700 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4047 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2701 */ 4048 */
2702 struct utsname buf; 4049 if (ev_linux_version () < 0x020619)
2703 int major, minor, micro;
2704
2705 if (uname (&buf))
2706 return; 4050 return;
2707 4051
2708 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2709 return;
2710
2711 if (major < 2
2712 || (major == 2 && minor < 6)
2713 || (major == 2 && minor == 6 && micro < 25))
2714 return;
2715
2716 fs_2625 = 1; 4052 fs_2625 = 1;
4053}
4054
4055inline_size int
4056infy_newfd (void)
4057{
4058#if defined IN_CLOEXEC && defined IN_NONBLOCK
4059 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4060 if (fd >= 0)
4061 return fd;
4062#endif
4063 return inotify_init ();
2717} 4064}
2718 4065
2719inline_size void 4066inline_size void
2720infy_init (EV_P) 4067infy_init (EV_P)
2721{ 4068{
2722 if (fs_fd != -2) 4069 if (fs_fd != -2)
2723 return; 4070 return;
2724 4071
2725 fs_fd = -1; 4072 fs_fd = -1;
2726 4073
2727 check_2625 (EV_A); 4074 ev_check_2625 (EV_A);
2728 4075
2729 fs_fd = inotify_init (); 4076 fs_fd = infy_newfd ();
2730 4077
2731 if (fs_fd >= 0) 4078 if (fs_fd >= 0)
2732 { 4079 {
4080 fd_intern (fs_fd);
2733 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4081 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2734 ev_set_priority (&fs_w, EV_MAXPRI); 4082 ev_set_priority (&fs_w, EV_MAXPRI);
2735 ev_io_start (EV_A_ &fs_w); 4083 ev_io_start (EV_A_ &fs_w);
4084 ev_unref (EV_A);
2736 } 4085 }
2737} 4086}
2738 4087
2739inline_size void 4088inline_size void
2740infy_fork (EV_P) 4089infy_fork (EV_P)
… …
2742 int slot; 4091 int slot;
2743 4092
2744 if (fs_fd < 0) 4093 if (fs_fd < 0)
2745 return; 4094 return;
2746 4095
4096 ev_ref (EV_A);
4097 ev_io_stop (EV_A_ &fs_w);
2747 close (fs_fd); 4098 close (fs_fd);
2748 fs_fd = inotify_init (); 4099 fs_fd = infy_newfd ();
2749 4100
4101 if (fs_fd >= 0)
4102 {
4103 fd_intern (fs_fd);
4104 ev_io_set (&fs_w, fs_fd, EV_READ);
4105 ev_io_start (EV_A_ &fs_w);
4106 ev_unref (EV_A);
4107 }
4108
2750 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4109 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2751 { 4110 {
2752 WL w_ = fs_hash [slot].head; 4111 WL w_ = fs_hash [slot].head;
2753 fs_hash [slot].head = 0; 4112 fs_hash [slot].head = 0;
2754 4113
2755 while (w_) 4114 while (w_)
… …
2760 w->wd = -1; 4119 w->wd = -1;
2761 4120
2762 if (fs_fd >= 0) 4121 if (fs_fd >= 0)
2763 infy_add (EV_A_ w); /* re-add, no matter what */ 4122 infy_add (EV_A_ w); /* re-add, no matter what */
2764 else 4123 else
4124 {
4125 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4126 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2765 ev_timer_again (EV_A_ &w->timer); 4127 ev_timer_again (EV_A_ &w->timer);
4128 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4129 }
2766 } 4130 }
2767 } 4131 }
2768} 4132}
2769 4133
2770#endif 4134#endif
… …
2774#else 4138#else
2775# define EV_LSTAT(p,b) lstat (p, b) 4139# define EV_LSTAT(p,b) lstat (p, b)
2776#endif 4140#endif
2777 4141
2778void 4142void
2779ev_stat_stat (EV_P_ ev_stat *w) 4143ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2780{ 4144{
2781 if (lstat (w->path, &w->attr) < 0) 4145 if (lstat (w->path, &w->attr) < 0)
2782 w->attr.st_nlink = 0; 4146 w->attr.st_nlink = 0;
2783 else if (!w->attr.st_nlink) 4147 else if (!w->attr.st_nlink)
2784 w->attr.st_nlink = 1; 4148 w->attr.st_nlink = 1;
… …
2787static void noinline 4151static void noinline
2788stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4152stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2789{ 4153{
2790 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4154 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2791 4155
2792 /* we copy this here each the time so that */ 4156 ev_statdata prev = w->attr;
2793 /* prev has the old value when the callback gets invoked */
2794 w->prev = w->attr;
2795 ev_stat_stat (EV_A_ w); 4157 ev_stat_stat (EV_A_ w);
2796 4158
2797 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4159 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2798 if ( 4160 if (
2799 w->prev.st_dev != w->attr.st_dev 4161 prev.st_dev != w->attr.st_dev
2800 || w->prev.st_ino != w->attr.st_ino 4162 || prev.st_ino != w->attr.st_ino
2801 || w->prev.st_mode != w->attr.st_mode 4163 || prev.st_mode != w->attr.st_mode
2802 || w->prev.st_nlink != w->attr.st_nlink 4164 || prev.st_nlink != w->attr.st_nlink
2803 || w->prev.st_uid != w->attr.st_uid 4165 || prev.st_uid != w->attr.st_uid
2804 || w->prev.st_gid != w->attr.st_gid 4166 || prev.st_gid != w->attr.st_gid
2805 || w->prev.st_rdev != w->attr.st_rdev 4167 || prev.st_rdev != w->attr.st_rdev
2806 || w->prev.st_size != w->attr.st_size 4168 || prev.st_size != w->attr.st_size
2807 || w->prev.st_atime != w->attr.st_atime 4169 || prev.st_atime != w->attr.st_atime
2808 || w->prev.st_mtime != w->attr.st_mtime 4170 || prev.st_mtime != w->attr.st_mtime
2809 || w->prev.st_ctime != w->attr.st_ctime 4171 || prev.st_ctime != w->attr.st_ctime
2810 ) { 4172 ) {
4173 /* we only update w->prev on actual differences */
4174 /* in case we test more often than invoke the callback, */
4175 /* to ensure that prev is always different to attr */
4176 w->prev = prev;
4177
2811 #if EV_USE_INOTIFY 4178 #if EV_USE_INOTIFY
2812 if (fs_fd >= 0) 4179 if (fs_fd >= 0)
2813 { 4180 {
2814 infy_del (EV_A_ w); 4181 infy_del (EV_A_ w);
2815 infy_add (EV_A_ w); 4182 infy_add (EV_A_ w);
… …
2820 ev_feed_event (EV_A_ w, EV_STAT); 4187 ev_feed_event (EV_A_ w, EV_STAT);
2821 } 4188 }
2822} 4189}
2823 4190
2824void 4191void
2825ev_stat_start (EV_P_ ev_stat *w) 4192ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2826{ 4193{
2827 if (expect_false (ev_is_active (w))) 4194 if (expect_false (ev_is_active (w)))
2828 return; 4195 return;
2829 4196
2830 ev_stat_stat (EV_A_ w); 4197 ev_stat_stat (EV_A_ w);
… …
2840 4207
2841 if (fs_fd >= 0) 4208 if (fs_fd >= 0)
2842 infy_add (EV_A_ w); 4209 infy_add (EV_A_ w);
2843 else 4210 else
2844#endif 4211#endif
4212 {
2845 ev_timer_again (EV_A_ &w->timer); 4213 ev_timer_again (EV_A_ &w->timer);
4214 ev_unref (EV_A);
4215 }
2846 4216
2847 ev_start (EV_A_ (W)w, 1); 4217 ev_start (EV_A_ (W)w, 1);
2848 4218
2849 EV_FREQUENT_CHECK; 4219 EV_FREQUENT_CHECK;
2850} 4220}
2851 4221
2852void 4222void
2853ev_stat_stop (EV_P_ ev_stat *w) 4223ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2854{ 4224{
2855 clear_pending (EV_A_ (W)w); 4225 clear_pending (EV_A_ (W)w);
2856 if (expect_false (!ev_is_active (w))) 4226 if (expect_false (!ev_is_active (w)))
2857 return; 4227 return;
2858 4228
2859 EV_FREQUENT_CHECK; 4229 EV_FREQUENT_CHECK;
2860 4230
2861#if EV_USE_INOTIFY 4231#if EV_USE_INOTIFY
2862 infy_del (EV_A_ w); 4232 infy_del (EV_A_ w);
2863#endif 4233#endif
4234
4235 if (ev_is_active (&w->timer))
4236 {
4237 ev_ref (EV_A);
2864 ev_timer_stop (EV_A_ &w->timer); 4238 ev_timer_stop (EV_A_ &w->timer);
4239 }
2865 4240
2866 ev_stop (EV_A_ (W)w); 4241 ev_stop (EV_A_ (W)w);
2867 4242
2868 EV_FREQUENT_CHECK; 4243 EV_FREQUENT_CHECK;
2869} 4244}
2870#endif 4245#endif
2871 4246
2872#if EV_IDLE_ENABLE 4247#if EV_IDLE_ENABLE
2873void 4248void
2874ev_idle_start (EV_P_ ev_idle *w) 4249ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2875{ 4250{
2876 if (expect_false (ev_is_active (w))) 4251 if (expect_false (ev_is_active (w)))
2877 return; 4252 return;
2878 4253
2879 pri_adjust (EV_A_ (W)w); 4254 pri_adjust (EV_A_ (W)w);
… …
2892 4267
2893 EV_FREQUENT_CHECK; 4268 EV_FREQUENT_CHECK;
2894} 4269}
2895 4270
2896void 4271void
2897ev_idle_stop (EV_P_ ev_idle *w) 4272ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2898{ 4273{
2899 clear_pending (EV_A_ (W)w); 4274 clear_pending (EV_A_ (W)w);
2900 if (expect_false (!ev_is_active (w))) 4275 if (expect_false (!ev_is_active (w)))
2901 return; 4276 return;
2902 4277
… …
2914 4289
2915 EV_FREQUENT_CHECK; 4290 EV_FREQUENT_CHECK;
2916} 4291}
2917#endif 4292#endif
2918 4293
4294#if EV_PREPARE_ENABLE
2919void 4295void
2920ev_prepare_start (EV_P_ ev_prepare *w) 4296ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2921{ 4297{
2922 if (expect_false (ev_is_active (w))) 4298 if (expect_false (ev_is_active (w)))
2923 return; 4299 return;
2924 4300
2925 EV_FREQUENT_CHECK; 4301 EV_FREQUENT_CHECK;
… …
2930 4306
2931 EV_FREQUENT_CHECK; 4307 EV_FREQUENT_CHECK;
2932} 4308}
2933 4309
2934void 4310void
2935ev_prepare_stop (EV_P_ ev_prepare *w) 4311ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2936{ 4312{
2937 clear_pending (EV_A_ (W)w); 4313 clear_pending (EV_A_ (W)w);
2938 if (expect_false (!ev_is_active (w))) 4314 if (expect_false (!ev_is_active (w)))
2939 return; 4315 return;
2940 4316
… …
2949 4325
2950 ev_stop (EV_A_ (W)w); 4326 ev_stop (EV_A_ (W)w);
2951 4327
2952 EV_FREQUENT_CHECK; 4328 EV_FREQUENT_CHECK;
2953} 4329}
4330#endif
2954 4331
4332#if EV_CHECK_ENABLE
2955void 4333void
2956ev_check_start (EV_P_ ev_check *w) 4334ev_check_start (EV_P_ ev_check *w) EV_THROW
2957{ 4335{
2958 if (expect_false (ev_is_active (w))) 4336 if (expect_false (ev_is_active (w)))
2959 return; 4337 return;
2960 4338
2961 EV_FREQUENT_CHECK; 4339 EV_FREQUENT_CHECK;
… …
2966 4344
2967 EV_FREQUENT_CHECK; 4345 EV_FREQUENT_CHECK;
2968} 4346}
2969 4347
2970void 4348void
2971ev_check_stop (EV_P_ ev_check *w) 4349ev_check_stop (EV_P_ ev_check *w) EV_THROW
2972{ 4350{
2973 clear_pending (EV_A_ (W)w); 4351 clear_pending (EV_A_ (W)w);
2974 if (expect_false (!ev_is_active (w))) 4352 if (expect_false (!ev_is_active (w)))
2975 return; 4353 return;
2976 4354
… …
2985 4363
2986 ev_stop (EV_A_ (W)w); 4364 ev_stop (EV_A_ (W)w);
2987 4365
2988 EV_FREQUENT_CHECK; 4366 EV_FREQUENT_CHECK;
2989} 4367}
4368#endif
2990 4369
2991#if EV_EMBED_ENABLE 4370#if EV_EMBED_ENABLE
2992void noinline 4371void noinline
2993ev_embed_sweep (EV_P_ ev_embed *w) 4372ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2994{ 4373{
2995 ev_loop (w->other, EVLOOP_NONBLOCK); 4374 ev_run (w->other, EVRUN_NOWAIT);
2996} 4375}
2997 4376
2998static void 4377static void
2999embed_io_cb (EV_P_ ev_io *io, int revents) 4378embed_io_cb (EV_P_ ev_io *io, int revents)
3000{ 4379{
3001 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4380 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3002 4381
3003 if (ev_cb (w)) 4382 if (ev_cb (w))
3004 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4383 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3005 else 4384 else
3006 ev_loop (w->other, EVLOOP_NONBLOCK); 4385 ev_run (w->other, EVRUN_NOWAIT);
3007} 4386}
3008 4387
3009static void 4388static void
3010embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4389embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3011{ 4390{
3012 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4391 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3013 4392
3014 { 4393 {
3015 struct ev_loop *loop = w->other; 4394 EV_P = w->other;
3016 4395
3017 while (fdchangecnt) 4396 while (fdchangecnt)
3018 { 4397 {
3019 fd_reify (EV_A); 4398 fd_reify (EV_A);
3020 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4399 ev_run (EV_A_ EVRUN_NOWAIT);
3021 } 4400 }
3022 } 4401 }
3023} 4402}
3024 4403
3025static void 4404static void
… …
3028 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4407 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3029 4408
3030 ev_embed_stop (EV_A_ w); 4409 ev_embed_stop (EV_A_ w);
3031 4410
3032 { 4411 {
3033 struct ev_loop *loop = w->other; 4412 EV_P = w->other;
3034 4413
3035 ev_loop_fork (EV_A); 4414 ev_loop_fork (EV_A);
3036 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4415 ev_run (EV_A_ EVRUN_NOWAIT);
3037 } 4416 }
3038 4417
3039 ev_embed_start (EV_A_ w); 4418 ev_embed_start (EV_A_ w);
3040} 4419}
3041 4420
… …
3046 ev_idle_stop (EV_A_ idle); 4425 ev_idle_stop (EV_A_ idle);
3047} 4426}
3048#endif 4427#endif
3049 4428
3050void 4429void
3051ev_embed_start (EV_P_ ev_embed *w) 4430ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3052{ 4431{
3053 if (expect_false (ev_is_active (w))) 4432 if (expect_false (ev_is_active (w)))
3054 return; 4433 return;
3055 4434
3056 { 4435 {
3057 struct ev_loop *loop = w->other; 4436 EV_P = w->other;
3058 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4437 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3059 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4438 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3060 } 4439 }
3061 4440
3062 EV_FREQUENT_CHECK; 4441 EV_FREQUENT_CHECK;
… …
3077 4456
3078 EV_FREQUENT_CHECK; 4457 EV_FREQUENT_CHECK;
3079} 4458}
3080 4459
3081void 4460void
3082ev_embed_stop (EV_P_ ev_embed *w) 4461ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3083{ 4462{
3084 clear_pending (EV_A_ (W)w); 4463 clear_pending (EV_A_ (W)w);
3085 if (expect_false (!ev_is_active (w))) 4464 if (expect_false (!ev_is_active (w)))
3086 return; 4465 return;
3087 4466
… …
3089 4468
3090 ev_io_stop (EV_A_ &w->io); 4469 ev_io_stop (EV_A_ &w->io);
3091 ev_prepare_stop (EV_A_ &w->prepare); 4470 ev_prepare_stop (EV_A_ &w->prepare);
3092 ev_fork_stop (EV_A_ &w->fork); 4471 ev_fork_stop (EV_A_ &w->fork);
3093 4472
4473 ev_stop (EV_A_ (W)w);
4474
3094 EV_FREQUENT_CHECK; 4475 EV_FREQUENT_CHECK;
3095} 4476}
3096#endif 4477#endif
3097 4478
3098#if EV_FORK_ENABLE 4479#if EV_FORK_ENABLE
3099void 4480void
3100ev_fork_start (EV_P_ ev_fork *w) 4481ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3101{ 4482{
3102 if (expect_false (ev_is_active (w))) 4483 if (expect_false (ev_is_active (w)))
3103 return; 4484 return;
3104 4485
3105 EV_FREQUENT_CHECK; 4486 EV_FREQUENT_CHECK;
… …
3110 4491
3111 EV_FREQUENT_CHECK; 4492 EV_FREQUENT_CHECK;
3112} 4493}
3113 4494
3114void 4495void
3115ev_fork_stop (EV_P_ ev_fork *w) 4496ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3116{ 4497{
3117 clear_pending (EV_A_ (W)w); 4498 clear_pending (EV_A_ (W)w);
3118 if (expect_false (!ev_is_active (w))) 4499 if (expect_false (!ev_is_active (w)))
3119 return; 4500 return;
3120 4501
… …
3131 4512
3132 EV_FREQUENT_CHECK; 4513 EV_FREQUENT_CHECK;
3133} 4514}
3134#endif 4515#endif
3135 4516
4517#if EV_CLEANUP_ENABLE
4518void
4519ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4520{
4521 if (expect_false (ev_is_active (w)))
4522 return;
4523
4524 EV_FREQUENT_CHECK;
4525
4526 ev_start (EV_A_ (W)w, ++cleanupcnt);
4527 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4528 cleanups [cleanupcnt - 1] = w;
4529
4530 /* cleanup watchers should never keep a refcount on the loop */
4531 ev_unref (EV_A);
4532 EV_FREQUENT_CHECK;
4533}
4534
4535void
4536ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4537{
4538 clear_pending (EV_A_ (W)w);
4539 if (expect_false (!ev_is_active (w)))
4540 return;
4541
4542 EV_FREQUENT_CHECK;
4543 ev_ref (EV_A);
4544
4545 {
4546 int active = ev_active (w);
4547
4548 cleanups [active - 1] = cleanups [--cleanupcnt];
4549 ev_active (cleanups [active - 1]) = active;
4550 }
4551
4552 ev_stop (EV_A_ (W)w);
4553
4554 EV_FREQUENT_CHECK;
4555}
4556#endif
4557
3136#if EV_ASYNC_ENABLE 4558#if EV_ASYNC_ENABLE
3137void 4559void
3138ev_async_start (EV_P_ ev_async *w) 4560ev_async_start (EV_P_ ev_async *w) EV_THROW
3139{ 4561{
3140 if (expect_false (ev_is_active (w))) 4562 if (expect_false (ev_is_active (w)))
3141 return; 4563 return;
4564
4565 w->sent = 0;
3142 4566
3143 evpipe_init (EV_A); 4567 evpipe_init (EV_A);
3144 4568
3145 EV_FREQUENT_CHECK; 4569 EV_FREQUENT_CHECK;
3146 4570
… …
3150 4574
3151 EV_FREQUENT_CHECK; 4575 EV_FREQUENT_CHECK;
3152} 4576}
3153 4577
3154void 4578void
3155ev_async_stop (EV_P_ ev_async *w) 4579ev_async_stop (EV_P_ ev_async *w) EV_THROW
3156{ 4580{
3157 clear_pending (EV_A_ (W)w); 4581 clear_pending (EV_A_ (W)w);
3158 if (expect_false (!ev_is_active (w))) 4582 if (expect_false (!ev_is_active (w)))
3159 return; 4583 return;
3160 4584
… …
3171 4595
3172 EV_FREQUENT_CHECK; 4596 EV_FREQUENT_CHECK;
3173} 4597}
3174 4598
3175void 4599void
3176ev_async_send (EV_P_ ev_async *w) 4600ev_async_send (EV_P_ ev_async *w) EV_THROW
3177{ 4601{
3178 w->sent = 1; 4602 w->sent = 1;
3179 evpipe_write (EV_A_ &gotasync); 4603 evpipe_write (EV_A_ &async_pending);
3180} 4604}
3181#endif 4605#endif
3182 4606
3183/*****************************************************************************/ 4607/*****************************************************************************/
3184 4608
… …
3218 4642
3219 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4643 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3220} 4644}
3221 4645
3222void 4646void
3223ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4647ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3224{ 4648{
3225 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4649 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3226 4650
3227 if (expect_false (!once)) 4651 if (expect_false (!once))
3228 { 4652 {
3229 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4653 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3230 return; 4654 return;
3231 } 4655 }
3232 4656
3233 once->cb = cb; 4657 once->cb = cb;
3234 once->arg = arg; 4658 once->arg = arg;
… …
3249} 4673}
3250 4674
3251/*****************************************************************************/ 4675/*****************************************************************************/
3252 4676
3253#if EV_WALK_ENABLE 4677#if EV_WALK_ENABLE
3254void 4678void ecb_cold
3255ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4679ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3256{ 4680{
3257 int i, j; 4681 int i, j;
3258 ev_watcher_list *wl, *wn; 4682 ev_watcher_list *wl, *wn;
3259 4683
3260 if (types & (EV_IO | EV_EMBED)) 4684 if (types & (EV_IO | EV_EMBED))
… …
3303 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4727 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3304#endif 4728#endif
3305 4729
3306#if EV_IDLE_ENABLE 4730#if EV_IDLE_ENABLE
3307 if (types & EV_IDLE) 4731 if (types & EV_IDLE)
3308 for (j = NUMPRI; i--; ) 4732 for (j = NUMPRI; j--; )
3309 for (i = idlecnt [j]; i--; ) 4733 for (i = idlecnt [j]; i--; )
3310 cb (EV_A_ EV_IDLE, idles [j][i]); 4734 cb (EV_A_ EV_IDLE, idles [j][i]);
3311#endif 4735#endif
3312 4736
3313#if EV_FORK_ENABLE 4737#if EV_FORK_ENABLE
… …
3321 if (types & EV_ASYNC) 4745 if (types & EV_ASYNC)
3322 for (i = asynccnt; i--; ) 4746 for (i = asynccnt; i--; )
3323 cb (EV_A_ EV_ASYNC, asyncs [i]); 4747 cb (EV_A_ EV_ASYNC, asyncs [i]);
3324#endif 4748#endif
3325 4749
4750#if EV_PREPARE_ENABLE
3326 if (types & EV_PREPARE) 4751 if (types & EV_PREPARE)
3327 for (i = preparecnt; i--; ) 4752 for (i = preparecnt; i--; )
3328#if EV_EMBED_ENABLE 4753# if EV_EMBED_ENABLE
3329 if (ev_cb (prepares [i]) != embed_prepare_cb) 4754 if (ev_cb (prepares [i]) != embed_prepare_cb)
3330#endif 4755# endif
3331 cb (EV_A_ EV_PREPARE, prepares [i]); 4756 cb (EV_A_ EV_PREPARE, prepares [i]);
4757#endif
3332 4758
4759#if EV_CHECK_ENABLE
3333 if (types & EV_CHECK) 4760 if (types & EV_CHECK)
3334 for (i = checkcnt; i--; ) 4761 for (i = checkcnt; i--; )
3335 cb (EV_A_ EV_CHECK, checks [i]); 4762 cb (EV_A_ EV_CHECK, checks [i]);
4763#endif
3336 4764
4765#if EV_SIGNAL_ENABLE
3337 if (types & EV_SIGNAL) 4766 if (types & EV_SIGNAL)
3338 for (i = 0; i < signalmax; ++i) 4767 for (i = 0; i < EV_NSIG - 1; ++i)
3339 for (wl = signals [i].head; wl; ) 4768 for (wl = signals [i].head; wl; )
3340 { 4769 {
3341 wn = wl->next; 4770 wn = wl->next;
3342 cb (EV_A_ EV_SIGNAL, wl); 4771 cb (EV_A_ EV_SIGNAL, wl);
3343 wl = wn; 4772 wl = wn;
3344 } 4773 }
4774#endif
3345 4775
4776#if EV_CHILD_ENABLE
3346 if (types & EV_CHILD) 4777 if (types & EV_CHILD)
3347 for (i = EV_PID_HASHSIZE; i--; ) 4778 for (i = (EV_PID_HASHSIZE); i--; )
3348 for (wl = childs [i]; wl; ) 4779 for (wl = childs [i]; wl; )
3349 { 4780 {
3350 wn = wl->next; 4781 wn = wl->next;
3351 cb (EV_A_ EV_CHILD, wl); 4782 cb (EV_A_ EV_CHILD, wl);
3352 wl = wn; 4783 wl = wn;
3353 } 4784 }
4785#endif
3354/* EV_STAT 0x00001000 /* stat data changed */ 4786/* EV_STAT 0x00001000 /* stat data changed */
3355/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4787/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3356} 4788}
3357#endif 4789#endif
3358 4790
3359#if EV_MULTIPLICITY 4791#if EV_MULTIPLICITY
3360 #include "ev_wrap.h" 4792 #include "ev_wrap.h"
3361#endif 4793#endif
3362 4794
3363#ifdef __cplusplus
3364}
3365#endif
3366

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