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Comparing libev/ev.c (file contents):
Revision 1.294 by root, Wed Jul 8 02:46:05 2009 UTC vs.
Revision 1.456 by root, Thu Jul 4 22:32:23 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 0x00010003
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/* work around x32 idiocy by defining proper macros */
555#if __x86_64 || _M_AMD64
556 #if __ILP32
557 #define ECB_AMD64_X32 1
558 #else
559 #define ECB_AMD64 1
384#endif 560 #endif
561#endif
385 562
563/* many compilers define _GNUC_ to some versions but then only implement
564 * what their idiot authors think are the "more important" extensions,
565 * causing enormous grief in return for some better fake benchmark numbers.
566 * or so.
567 * we try to detect these and simply assume they are not gcc - if they have
568 * an issue with that they should have done it right in the first place.
569 */
570#ifndef ECB_GCC_VERSION
571 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
572 #define ECB_GCC_VERSION(major,minor) 0
573 #else
574 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
575 #endif
576#endif
577
578#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
579#define ECB_C99 (__STDC_VERSION__ >= 199901L)
580#define ECB_C11 (__STDC_VERSION__ >= 201112L)
581#define ECB_CPP (__cplusplus+0)
582#define ECB_CPP11 (__cplusplus >= 201103L)
583
584#if ECB_CPP
585 #define ECB_EXTERN_C extern "C"
586 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
587 #define ECB_EXTERN_C_END }
588#else
589 #define ECB_EXTERN_C extern
590 #define ECB_EXTERN_C_BEG
591 #define ECB_EXTERN_C_END
592#endif
593
594/*****************************************************************************/
595
596/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
597/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
598
599#if ECB_NO_THREADS
600 #define ECB_NO_SMP 1
601#endif
602
603#if ECB_NO_SMP
604 #define ECB_MEMORY_FENCE do { } while (0)
605#endif
606
607#ifndef ECB_MEMORY_FENCE
608 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
609 #if __i386 || __i386__
610 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
611 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
612 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
613 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
614 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
615 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
616 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
617 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
618 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
619 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
620 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
622 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
623 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
624 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
625 #elif __sparc || __sparc__
626 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
627 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
629 #elif defined __s390__ || defined __s390x__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
631 #elif defined __mips__
632 /* GNU/Linux emulates sync on mips1 architectures, so we force it's use */
633 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
634 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
635 #elif defined __alpha__
636 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
637 #elif defined __hppa__
638 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
639 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
640 #elif defined __ia64__
641 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
642 #endif
643 #endif
644#endif
645
646#ifndef ECB_MEMORY_FENCE
647 #if ECB_GCC_VERSION(4,7)
648 /* see comment below (stdatomic.h) about the C11 memory model. */
649 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
650
651 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
652 * without risking compile time errors with other compilers. We *could*
653 * define our own ecb_clang_has_feature, but I just can't be bothered to work
654 * around this shit time and again.
655 * #elif defined __clang && __has_feature (cxx_atomic)
656 * // see comment below (stdatomic.h) about the C11 memory model.
657 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
658 */
659
660 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
661 #define ECB_MEMORY_FENCE __sync_synchronize ()
662 #elif _MSC_VER >= 1400 /* VC++ 2005 */
663 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
664 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
665 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
666 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
667 #elif defined _WIN32
668 #include <WinNT.h>
669 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
670 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
671 #include <mbarrier.h>
672 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
673 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
674 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
675 #elif __xlC__
676 #define ECB_MEMORY_FENCE __sync ()
677 #endif
678#endif
679
680#ifndef ECB_MEMORY_FENCE
681 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
682 /* we assume that these memory fences work on all variables/all memory accesses, */
683 /* not just C11 atomics and atomic accesses */
684 #include <stdatomic.h>
685 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
686 /* any fence other than seq_cst, which isn't very efficient for us. */
687 /* Why that is, we don't know - either the C11 memory model is quite useless */
688 /* for most usages, or gcc and clang have a bug */
689 /* I *currently* lean towards the latter, and inefficiently implement */
690 /* all three of ecb's fences as a seq_cst fence */
691 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
692 #endif
693#endif
694
695#ifndef ECB_MEMORY_FENCE
696 #if !ECB_AVOID_PTHREADS
697 /*
698 * if you get undefined symbol references to pthread_mutex_lock,
699 * or failure to find pthread.h, then you should implement
700 * the ECB_MEMORY_FENCE operations for your cpu/compiler
701 * OR provide pthread.h and link against the posix thread library
702 * of your system.
703 */
704 #include <pthread.h>
705 #define ECB_NEEDS_PTHREADS 1
706 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
707
708 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
709 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
710 #endif
711#endif
712
713#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
714 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
715#endif
716
717#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
718 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
719#endif
720
721/*****************************************************************************/
722
723#if __cplusplus
724 #define ecb_inline static inline
725#elif ECB_GCC_VERSION(2,5)
726 #define ecb_inline static __inline__
727#elif ECB_C99
728 #define ecb_inline static inline
729#else
730 #define ecb_inline static
731#endif
732
733#if ECB_GCC_VERSION(3,3)
734 #define ecb_restrict __restrict__
735#elif ECB_C99
736 #define ecb_restrict restrict
737#else
738 #define ecb_restrict
739#endif
740
741typedef int ecb_bool;
742
743#define ECB_CONCAT_(a, b) a ## b
744#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
745#define ECB_STRINGIFY_(a) # a
746#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
747
748#define ecb_function_ ecb_inline
749
750#if ECB_GCC_VERSION(3,1)
751 #define ecb_attribute(attrlist) __attribute__(attrlist)
752 #define ecb_is_constant(expr) __builtin_constant_p (expr)
753 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
754 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
755#else
756 #define ecb_attribute(attrlist)
757 #define ecb_is_constant(expr) 0
758 #define ecb_expect(expr,value) (expr)
759 #define ecb_prefetch(addr,rw,locality)
760#endif
761
762/* no emulation for ecb_decltype */
763#if ECB_GCC_VERSION(4,5)
764 #define ecb_decltype(x) __decltype(x)
765#elif ECB_GCC_VERSION(3,0)
766 #define ecb_decltype(x) __typeof(x)
767#endif
768
769#define ecb_noinline ecb_attribute ((__noinline__))
770#define ecb_unused ecb_attribute ((__unused__))
771#define ecb_const ecb_attribute ((__const__))
772#define ecb_pure ecb_attribute ((__pure__))
773
774#if ECB_C11
775 #define ecb_noreturn _Noreturn
776#else
777 #define ecb_noreturn ecb_attribute ((__noreturn__))
778#endif
779
780#if ECB_GCC_VERSION(4,3)
781 #define ecb_artificial ecb_attribute ((__artificial__))
782 #define ecb_hot ecb_attribute ((__hot__))
783 #define ecb_cold ecb_attribute ((__cold__))
784#else
785 #define ecb_artificial
786 #define ecb_hot
787 #define ecb_cold
788#endif
789
790/* put around conditional expressions if you are very sure that the */
791/* expression is mostly true or mostly false. note that these return */
792/* booleans, not the expression. */
386#define expect_false(expr) expect ((expr) != 0, 0) 793#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 794#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
795/* for compatibility to the rest of the world */
796#define ecb_likely(expr) ecb_expect_true (expr)
797#define ecb_unlikely(expr) ecb_expect_false (expr)
798
799/* count trailing zero bits and count # of one bits */
800#if ECB_GCC_VERSION(3,4)
801 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
802 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
803 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
804 #define ecb_ctz32(x) __builtin_ctz (x)
805 #define ecb_ctz64(x) __builtin_ctzll (x)
806 #define ecb_popcount32(x) __builtin_popcount (x)
807 /* no popcountll */
808#else
809 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
810 ecb_function_ int
811 ecb_ctz32 (uint32_t x)
812 {
813 int r = 0;
814
815 x &= ~x + 1; /* this isolates the lowest bit */
816
817#if ECB_branchless_on_i386
818 r += !!(x & 0xaaaaaaaa) << 0;
819 r += !!(x & 0xcccccccc) << 1;
820 r += !!(x & 0xf0f0f0f0) << 2;
821 r += !!(x & 0xff00ff00) << 3;
822 r += !!(x & 0xffff0000) << 4;
823#else
824 if (x & 0xaaaaaaaa) r += 1;
825 if (x & 0xcccccccc) r += 2;
826 if (x & 0xf0f0f0f0) r += 4;
827 if (x & 0xff00ff00) r += 8;
828 if (x & 0xffff0000) r += 16;
829#endif
830
831 return r;
832 }
833
834 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
835 ecb_function_ int
836 ecb_ctz64 (uint64_t x)
837 {
838 int shift = x & 0xffffffffU ? 0 : 32;
839 return ecb_ctz32 (x >> shift) + shift;
840 }
841
842 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
843 ecb_function_ int
844 ecb_popcount32 (uint32_t x)
845 {
846 x -= (x >> 1) & 0x55555555;
847 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
848 x = ((x >> 4) + x) & 0x0f0f0f0f;
849 x *= 0x01010101;
850
851 return x >> 24;
852 }
853
854 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
855 ecb_function_ int ecb_ld32 (uint32_t x)
856 {
857 int r = 0;
858
859 if (x >> 16) { x >>= 16; r += 16; }
860 if (x >> 8) { x >>= 8; r += 8; }
861 if (x >> 4) { x >>= 4; r += 4; }
862 if (x >> 2) { x >>= 2; r += 2; }
863 if (x >> 1) { r += 1; }
864
865 return r;
866 }
867
868 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
869 ecb_function_ int ecb_ld64 (uint64_t x)
870 {
871 int r = 0;
872
873 if (x >> 32) { x >>= 32; r += 32; }
874
875 return r + ecb_ld32 (x);
876 }
877#endif
878
879ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
880ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
881ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
882ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
883
884ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
885ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
886{
887 return ( (x * 0x0802U & 0x22110U)
888 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
889}
890
891ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
892ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
893{
894 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
895 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
896 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
897 x = ( x >> 8 ) | ( x << 8);
898
899 return x;
900}
901
902ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
903ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
904{
905 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
906 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
907 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
908 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
909 x = ( x >> 16 ) | ( x << 16);
910
911 return x;
912}
913
914/* popcount64 is only available on 64 bit cpus as gcc builtin */
915/* so for this version we are lazy */
916ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
917ecb_function_ int
918ecb_popcount64 (uint64_t x)
919{
920 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
921}
922
923ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
924ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
925ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
926ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
927ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
928ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
929ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
930ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
931
932ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
933ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
934ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
935ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
936ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
937ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
938ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
939ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
940
941#if ECB_GCC_VERSION(4,3)
942 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
943 #define ecb_bswap32(x) __builtin_bswap32 (x)
944 #define ecb_bswap64(x) __builtin_bswap64 (x)
945#else
946 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
947 ecb_function_ uint16_t
948 ecb_bswap16 (uint16_t x)
949 {
950 return ecb_rotl16 (x, 8);
951 }
952
953 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
954 ecb_function_ uint32_t
955 ecb_bswap32 (uint32_t x)
956 {
957 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
958 }
959
960 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
961 ecb_function_ uint64_t
962 ecb_bswap64 (uint64_t x)
963 {
964 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
965 }
966#endif
967
968#if ECB_GCC_VERSION(4,5)
969 #define ecb_unreachable() __builtin_unreachable ()
970#else
971 /* this seems to work fine, but gcc always emits a warning for it :/ */
972 ecb_inline void ecb_unreachable (void) ecb_noreturn;
973 ecb_inline void ecb_unreachable (void) { }
974#endif
975
976/* try to tell the compiler that some condition is definitely true */
977#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
978
979ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
980ecb_inline unsigned char
981ecb_byteorder_helper (void)
982{
983 /* the union code still generates code under pressure in gcc, */
984 /* but less than using pointers, and always seems to */
985 /* successfully return a constant. */
986 /* the reason why we have this horrible preprocessor mess */
987 /* is to avoid it in all cases, at least on common architectures */
988 /* or when using a recent enough gcc version (>= 4.6) */
989#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
990 return 0x44;
991#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
992 return 0x44;
993#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
994 return 0x11;
995#else
996 union
997 {
998 uint32_t i;
999 uint8_t c;
1000 } u = { 0x11223344 };
1001 return u.c;
1002#endif
1003}
1004
1005ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1006ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1007ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1008ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1009
1010#if ECB_GCC_VERSION(3,0) || ECB_C99
1011 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1012#else
1013 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1014#endif
1015
1016#if __cplusplus
1017 template<typename T>
1018 static inline T ecb_div_rd (T val, T div)
1019 {
1020 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1021 }
1022 template<typename T>
1023 static inline T ecb_div_ru (T val, T div)
1024 {
1025 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1026 }
1027#else
1028 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1029 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1030#endif
1031
1032#if ecb_cplusplus_does_not_suck
1033 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1034 template<typename T, int N>
1035 static inline int ecb_array_length (const T (&arr)[N])
1036 {
1037 return N;
1038 }
1039#else
1040 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1041#endif
1042
1043/*******************************************************************************/
1044/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1045
1046/* basically, everything uses "ieee pure-endian" floating point numbers */
1047/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1048#if 0 \
1049 || __i386 || __i386__ \
1050 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1051 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1052 || defined __arm__ && defined __ARM_EABI__ \
1053 || defined __s390__ || defined __s390x__ \
1054 || defined __mips__ \
1055 || defined __alpha__ \
1056 || defined __hppa__ \
1057 || defined __ia64__ \
1058 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1059 #define ECB_STDFP 1
1060 #include <string.h> /* for memcpy */
1061#else
1062 #define ECB_STDFP 0
1063 #include <math.h> /* for frexp*, ldexp* */
1064#endif
1065
1066#ifndef ECB_NO_LIBM
1067
1068 /* convert a float to ieee single/binary32 */
1069 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1070 ecb_function_ uint32_t
1071 ecb_float_to_binary32 (float x)
1072 {
1073 uint32_t r;
1074
1075 #if ECB_STDFP
1076 memcpy (&r, &x, 4);
1077 #else
1078 /* slow emulation, works for anything but -0 */
1079 uint32_t m;
1080 int e;
1081
1082 if (x == 0e0f ) return 0x00000000U;
1083 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1084 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1085 if (x != x ) return 0x7fbfffffU;
1086
1087 m = frexpf (x, &e) * 0x1000000U;
1088
1089 r = m & 0x80000000U;
1090
1091 if (r)
1092 m = -m;
1093
1094 if (e <= -126)
1095 {
1096 m &= 0xffffffU;
1097 m >>= (-125 - e);
1098 e = -126;
1099 }
1100
1101 r |= (e + 126) << 23;
1102 r |= m & 0x7fffffU;
1103 #endif
1104
1105 return r;
1106 }
1107
1108 /* converts an ieee single/binary32 to a float */
1109 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1110 ecb_function_ float
1111 ecb_binary32_to_float (uint32_t x)
1112 {
1113 float r;
1114
1115 #if ECB_STDFP
1116 memcpy (&r, &x, 4);
1117 #else
1118 /* emulation, only works for normals and subnormals and +0 */
1119 int neg = x >> 31;
1120 int e = (x >> 23) & 0xffU;
1121
1122 x &= 0x7fffffU;
1123
1124 if (e)
1125 x |= 0x800000U;
1126 else
1127 e = 1;
1128
1129 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1130 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1131
1132 r = neg ? -r : r;
1133 #endif
1134
1135 return r;
1136 }
1137
1138 /* convert a double to ieee double/binary64 */
1139 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1140 ecb_function_ uint64_t
1141 ecb_double_to_binary64 (double x)
1142 {
1143 uint64_t r;
1144
1145 #if ECB_STDFP
1146 memcpy (&r, &x, 8);
1147 #else
1148 /* slow emulation, works for anything but -0 */
1149 uint64_t m;
1150 int e;
1151
1152 if (x == 0e0 ) return 0x0000000000000000U;
1153 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1154 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1155 if (x != x ) return 0X7ff7ffffffffffffU;
1156
1157 m = frexp (x, &e) * 0x20000000000000U;
1158
1159 r = m & 0x8000000000000000;;
1160
1161 if (r)
1162 m = -m;
1163
1164 if (e <= -1022)
1165 {
1166 m &= 0x1fffffffffffffU;
1167 m >>= (-1021 - e);
1168 e = -1022;
1169 }
1170
1171 r |= ((uint64_t)(e + 1022)) << 52;
1172 r |= m & 0xfffffffffffffU;
1173 #endif
1174
1175 return r;
1176 }
1177
1178 /* converts an ieee double/binary64 to a double */
1179 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1180 ecb_function_ double
1181 ecb_binary64_to_double (uint64_t x)
1182 {
1183 double r;
1184
1185 #if ECB_STDFP
1186 memcpy (&r, &x, 8);
1187 #else
1188 /* emulation, only works for normals and subnormals and +0 */
1189 int neg = x >> 63;
1190 int e = (x >> 52) & 0x7ffU;
1191
1192 x &= 0xfffffffffffffU;
1193
1194 if (e)
1195 x |= 0x10000000000000U;
1196 else
1197 e = 1;
1198
1199 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1200 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1201
1202 r = neg ? -r : r;
1203 #endif
1204
1205 return r;
1206 }
1207
1208#endif
1209
1210#endif
1211
1212/* ECB.H END */
1213
1214#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1215/* if your architecture doesn't need memory fences, e.g. because it is
1216 * single-cpu/core, or if you use libev in a project that doesn't use libev
1217 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1218 * libev, in which cases the memory fences become nops.
1219 * alternatively, you can remove this #error and link against libpthread,
1220 * which will then provide the memory fences.
1221 */
1222# error "memory fences not defined for your architecture, please report"
1223#endif
1224
1225#ifndef ECB_MEMORY_FENCE
1226# define ECB_MEMORY_FENCE do { } while (0)
1227# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1228# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1229#endif
1230
1231#define expect_false(cond) ecb_expect_false (cond)
1232#define expect_true(cond) ecb_expect_true (cond)
1233#define noinline ecb_noinline
1234
388#define inline_size static inline 1235#define inline_size ecb_inline
389 1236
390#if EV_MINIMAL 1237#if EV_FEATURE_CODE
1238# define inline_speed ecb_inline
1239#else
391# define inline_speed static noinline 1240# define inline_speed static noinline
1241#endif
1242
1243#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1244
1245#if EV_MINPRI == EV_MAXPRI
1246# define ABSPRI(w) (((W)w), 0)
392#else 1247#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) 1248# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1249#endif
398 1250
399#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1251#define EMPTY /* required for microsofts broken pseudo-c compiler */
400#define EMPTY2(a,b) /* used to suppress some warnings */ 1252#define EMPTY2(a,b) /* used to suppress some warnings */
401 1253
402typedef ev_watcher *W; 1254typedef ev_watcher *W;
… …
406#define ev_active(w) ((W)(w))->active 1258#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at 1259#define ev_at(w) ((WT)(w))->at
408 1260
409#if EV_USE_REALTIME 1261#if EV_USE_REALTIME
410/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1262/* 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 */ 1263/* giving it a reasonably high chance of working on typical architectures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1264static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif 1265#endif
414 1266
415#if EV_USE_MONOTONIC 1267#if EV_USE_MONOTONIC
416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1268static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif 1269#endif
418 1270
1271#ifndef EV_FD_TO_WIN32_HANDLE
1272# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1273#endif
1274#ifndef EV_WIN32_HANDLE_TO_FD
1275# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1276#endif
1277#ifndef EV_WIN32_CLOSE_FD
1278# define EV_WIN32_CLOSE_FD(fd) close (fd)
1279#endif
1280
419#ifdef _WIN32 1281#ifdef _WIN32
420# include "ev_win32.c" 1282# include "ev_win32.c"
421#endif 1283#endif
422 1284
423/*****************************************************************************/ 1285/*****************************************************************************/
424 1286
1287/* define a suitable floor function (only used by periodics atm) */
1288
1289#if EV_USE_FLOOR
1290# include <math.h>
1291# define ev_floor(v) floor (v)
1292#else
1293
1294#include <float.h>
1295
1296/* a floor() replacement function, should be independent of ev_tstamp type */
1297static ev_tstamp noinline
1298ev_floor (ev_tstamp v)
1299{
1300 /* the choice of shift factor is not terribly important */
1301#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1302 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1303#else
1304 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1305#endif
1306
1307 /* argument too large for an unsigned long? */
1308 if (expect_false (v >= shift))
1309 {
1310 ev_tstamp f;
1311
1312 if (v == v - 1.)
1313 return v; /* very large number */
1314
1315 f = shift * ev_floor (v * (1. / shift));
1316 return f + ev_floor (v - f);
1317 }
1318
1319 /* special treatment for negative args? */
1320 if (expect_false (v < 0.))
1321 {
1322 ev_tstamp f = -ev_floor (-v);
1323
1324 return f - (f == v ? 0 : 1);
1325 }
1326
1327 /* fits into an unsigned long */
1328 return (unsigned long)v;
1329}
1330
1331#endif
1332
1333/*****************************************************************************/
1334
1335#ifdef __linux
1336# include <sys/utsname.h>
1337#endif
1338
1339static unsigned int noinline ecb_cold
1340ev_linux_version (void)
1341{
1342#ifdef __linux
1343 unsigned int v = 0;
1344 struct utsname buf;
1345 int i;
1346 char *p = buf.release;
1347
1348 if (uname (&buf))
1349 return 0;
1350
1351 for (i = 3+1; --i; )
1352 {
1353 unsigned int c = 0;
1354
1355 for (;;)
1356 {
1357 if (*p >= '0' && *p <= '9')
1358 c = c * 10 + *p++ - '0';
1359 else
1360 {
1361 p += *p == '.';
1362 break;
1363 }
1364 }
1365
1366 v = (v << 8) | c;
1367 }
1368
1369 return v;
1370#else
1371 return 0;
1372#endif
1373}
1374
1375/*****************************************************************************/
1376
1377#if EV_AVOID_STDIO
1378static void noinline ecb_cold
1379ev_printerr (const char *msg)
1380{
1381 write (STDERR_FILENO, msg, strlen (msg));
1382}
1383#endif
1384
425static void (*syserr_cb)(const char *msg); 1385static void (*syserr_cb)(const char *msg) EV_THROW;
426 1386
427void 1387void ecb_cold
428ev_set_syserr_cb (void (*cb)(const char *msg)) 1388ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
429{ 1389{
430 syserr_cb = cb; 1390 syserr_cb = cb;
431} 1391}
432 1392
433static void noinline 1393static void noinline ecb_cold
434ev_syserr (const char *msg) 1394ev_syserr (const char *msg)
435{ 1395{
436 if (!msg) 1396 if (!msg)
437 msg = "(libev) system error"; 1397 msg = "(libev) system error";
438 1398
439 if (syserr_cb) 1399 if (syserr_cb)
440 syserr_cb (msg); 1400 syserr_cb (msg);
441 else 1401 else
442 { 1402 {
1403#if EV_AVOID_STDIO
1404 ev_printerr (msg);
1405 ev_printerr (": ");
1406 ev_printerr (strerror (errno));
1407 ev_printerr ("\n");
1408#else
443 perror (msg); 1409 perror (msg);
1410#endif
444 abort (); 1411 abort ();
445 } 1412 }
446} 1413}
447 1414
448static void * 1415static void *
449ev_realloc_emul (void *ptr, long size) 1416ev_realloc_emul (void *ptr, long size) EV_THROW
450{ 1417{
451 /* some systems, notably openbsd and darwin, fail to properly 1418 /* some systems, notably openbsd and darwin, fail to properly
452 * implement realloc (x, 0) (as required by both ansi c-98 and 1419 * implement realloc (x, 0) (as required by both ansi c-89 and
453 * the single unix specification, so work around them here. 1420 * the single unix specification, so work around them here.
1421 * recently, also (at least) fedora and debian started breaking it,
1422 * despite documenting it otherwise.
454 */ 1423 */
455 1424
456 if (size) 1425 if (size)
457 return realloc (ptr, size); 1426 return realloc (ptr, size);
458 1427
459 free (ptr); 1428 free (ptr);
460 return 0; 1429 return 0;
461} 1430}
462 1431
463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1432static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
464 1433
465void 1434void ecb_cold
466ev_set_allocator (void *(*cb)(void *ptr, long size)) 1435ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
467{ 1436{
468 alloc = cb; 1437 alloc = cb;
469} 1438}
470 1439
471inline_speed void * 1440inline_speed void *
… …
473{ 1442{
474 ptr = alloc (ptr, size); 1443 ptr = alloc (ptr, size);
475 1444
476 if (!ptr && size) 1445 if (!ptr && size)
477 { 1446 {
1447#if EV_AVOID_STDIO
1448 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1449#else
478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1450 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1451#endif
479 abort (); 1452 abort ();
480 } 1453 }
481 1454
482 return ptr; 1455 return ptr;
483} 1456}
… …
485#define ev_malloc(size) ev_realloc (0, (size)) 1458#define ev_malloc(size) ev_realloc (0, (size))
486#define ev_free(ptr) ev_realloc ((ptr), 0) 1459#define ev_free(ptr) ev_realloc ((ptr), 0)
487 1460
488/*****************************************************************************/ 1461/*****************************************************************************/
489 1462
1463/* set in reify when reification needed */
1464#define EV_ANFD_REIFY 1
1465
490/* file descriptor info structure */ 1466/* file descriptor info structure */
491typedef struct 1467typedef struct
492{ 1468{
493 WL head; 1469 WL head;
494 unsigned char events; /* the events watched for */ 1470 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */ 1471 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 */ 1472 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
497 unsigned char unused; 1473 unsigned char unused;
498#if EV_USE_EPOLL 1474#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */ 1475 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif 1476#endif
501#if EV_SELECT_IS_WINSOCKET 1477#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
502 SOCKET handle; 1478 SOCKET handle;
1479#endif
1480#if EV_USE_IOCP
1481 OVERLAPPED or, ow;
503#endif 1482#endif
504} ANFD; 1483} ANFD;
505 1484
506/* stores the pending event set for a given watcher */ 1485/* stores the pending event set for a given watcher */
507typedef struct 1486typedef struct
… …
549 #undef VAR 1528 #undef VAR
550 }; 1529 };
551 #include "ev_wrap.h" 1530 #include "ev_wrap.h"
552 1531
553 static struct ev_loop default_loop_struct; 1532 static struct ev_loop default_loop_struct;
554 struct ev_loop *ev_default_loop_ptr; 1533 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
555 1534
556#else 1535#else
557 1536
558 ev_tstamp ev_rt_now; 1537 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; 1538 #define VAR(name,decl) static decl;
560 #include "ev_vars.h" 1539 #include "ev_vars.h"
561 #undef VAR 1540 #undef VAR
562 1541
563 static int ev_default_loop_ptr; 1542 static int ev_default_loop_ptr;
564 1543
565#endif 1544#endif
566 1545
1546#if EV_FEATURE_API
1547# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1548# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1549# define EV_INVOKE_PENDING invoke_cb (EV_A)
1550#else
1551# define EV_RELEASE_CB (void)0
1552# define EV_ACQUIRE_CB (void)0
1553# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1554#endif
1555
1556#define EVBREAK_RECURSE 0x80
1557
567/*****************************************************************************/ 1558/*****************************************************************************/
568 1559
569#ifndef EV_HAVE_EV_TIME 1560#ifndef EV_HAVE_EV_TIME
570ev_tstamp 1561ev_tstamp
571ev_time (void) 1562ev_time (void) EV_THROW
572{ 1563{
573#if EV_USE_REALTIME 1564#if EV_USE_REALTIME
574 if (expect_true (have_realtime)) 1565 if (expect_true (have_realtime))
575 { 1566 {
576 struct timespec ts; 1567 struct timespec ts;
… …
600 return ev_time (); 1591 return ev_time ();
601} 1592}
602 1593
603#if EV_MULTIPLICITY 1594#if EV_MULTIPLICITY
604ev_tstamp 1595ev_tstamp
605ev_now (EV_P) 1596ev_now (EV_P) EV_THROW
606{ 1597{
607 return ev_rt_now; 1598 return ev_rt_now;
608} 1599}
609#endif 1600#endif
610 1601
611void 1602void
612ev_sleep (ev_tstamp delay) 1603ev_sleep (ev_tstamp delay) EV_THROW
613{ 1604{
614 if (delay > 0.) 1605 if (delay > 0.)
615 { 1606 {
616#if EV_USE_NANOSLEEP 1607#if EV_USE_NANOSLEEP
617 struct timespec ts; 1608 struct timespec ts;
618 1609
619 ts.tv_sec = (time_t)delay; 1610 EV_TS_SET (ts, delay);
620 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
621
622 nanosleep (&ts, 0); 1611 nanosleep (&ts, 0);
623#elif defined(_WIN32) 1612#elif defined _WIN32
624 Sleep ((unsigned long)(delay * 1e3)); 1613 Sleep ((unsigned long)(delay * 1e3));
625#else 1614#else
626 struct timeval tv; 1615 struct timeval tv;
627 1616
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 */ 1617 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
632 /* somehting not guaranteed by newer posix versions, but guaranteed */ 1618 /* something not guaranteed by newer posix versions, but guaranteed */
633 /* by older ones */ 1619 /* by older ones */
1620 EV_TV_SET (tv, delay);
634 select (0, 0, 0, 0, &tv); 1621 select (0, 0, 0, 0, &tv);
635#endif 1622#endif
636 } 1623 }
637} 1624}
638 1625
639/*****************************************************************************/ 1626/*****************************************************************************/
640 1627
641#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1628#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
642 1629
643/* find a suitable new size for the given array, */ 1630/* find a suitable new size for the given array, */
644/* hopefully by rounding to a ncie-to-malloc size */ 1631/* hopefully by rounding to a nice-to-malloc size */
645inline_size int 1632inline_size int
646array_nextsize (int elem, int cur, int cnt) 1633array_nextsize (int elem, int cur, int cnt)
647{ 1634{
648 int ncur = cur + 1; 1635 int ncur = cur + 1;
649 1636
650 do 1637 do
651 ncur <<= 1; 1638 ncur <<= 1;
652 while (cnt > ncur); 1639 while (cnt > ncur);
653 1640
654 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1641 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
655 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1642 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
656 { 1643 {
657 ncur *= elem; 1644 ncur *= elem;
658 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1645 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
659 ncur = ncur - sizeof (void *) * 4; 1646 ncur = ncur - sizeof (void *) * 4;
… …
661 } 1648 }
662 1649
663 return ncur; 1650 return ncur;
664} 1651}
665 1652
666static noinline void * 1653static void * noinline ecb_cold
667array_realloc (int elem, void *base, int *cur, int cnt) 1654array_realloc (int elem, void *base, int *cur, int cnt)
668{ 1655{
669 *cur = array_nextsize (elem, *cur, cnt); 1656 *cur = array_nextsize (elem, *cur, cnt);
670 return ev_realloc (base, elem * *cur); 1657 return ev_realloc (base, elem * *cur);
671} 1658}
… …
674 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1661 memset ((void *)(base), 0, sizeof (*(base)) * (count))
675 1662
676#define array_needsize(type,base,cur,cnt,init) \ 1663#define array_needsize(type,base,cur,cnt,init) \
677 if (expect_false ((cnt) > (cur))) \ 1664 if (expect_false ((cnt) > (cur))) \
678 { \ 1665 { \
679 int ocur_ = (cur); \ 1666 int ecb_unused ocur_ = (cur); \
680 (base) = (type *)array_realloc \ 1667 (base) = (type *)array_realloc \
681 (sizeof (type), (base), &(cur), (cnt)); \ 1668 (sizeof (type), (base), &(cur), (cnt)); \
682 init ((base) + (ocur_), (cur) - ocur_); \ 1669 init ((base) + (ocur_), (cur) - ocur_); \
683 } 1670 }
684 1671
… …
702pendingcb (EV_P_ ev_prepare *w, int revents) 1689pendingcb (EV_P_ ev_prepare *w, int revents)
703{ 1690{
704} 1691}
705 1692
706void noinline 1693void noinline
707ev_feed_event (EV_P_ void *w, int revents) 1694ev_feed_event (EV_P_ void *w, int revents) EV_THROW
708{ 1695{
709 W w_ = (W)w; 1696 W w_ = (W)w;
710 int pri = ABSPRI (w_); 1697 int pri = ABSPRI (w_);
711 1698
712 if (expect_false (w_->pending)) 1699 if (expect_false (w_->pending))
… …
716 w_->pending = ++pendingcnt [pri]; 1703 w_->pending = ++pendingcnt [pri];
717 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1704 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
718 pendings [pri][w_->pending - 1].w = w_; 1705 pendings [pri][w_->pending - 1].w = w_;
719 pendings [pri][w_->pending - 1].events = revents; 1706 pendings [pri][w_->pending - 1].events = revents;
720 } 1707 }
1708
1709 pendingpri = NUMPRI - 1;
721} 1710}
722 1711
723inline_speed void 1712inline_speed void
724feed_reverse (EV_P_ W w) 1713feed_reverse (EV_P_ W w)
725{ 1714{
… …
745} 1734}
746 1735
747/*****************************************************************************/ 1736/*****************************************************************************/
748 1737
749inline_speed void 1738inline_speed void
750fd_event (EV_P_ int fd, int revents) 1739fd_event_nocheck (EV_P_ int fd, int revents)
751{ 1740{
752 ANFD *anfd = anfds + fd; 1741 ANFD *anfd = anfds + fd;
753 ev_io *w; 1742 ev_io *w;
754 1743
755 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1744 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
759 if (ev) 1748 if (ev)
760 ev_feed_event (EV_A_ (W)w, ev); 1749 ev_feed_event (EV_A_ (W)w, ev);
761 } 1750 }
762} 1751}
763 1752
1753/* do not submit kernel events for fds that have reify set */
1754/* because that means they changed while we were polling for new events */
1755inline_speed void
1756fd_event (EV_P_ int fd, int revents)
1757{
1758 ANFD *anfd = anfds + fd;
1759
1760 if (expect_true (!anfd->reify))
1761 fd_event_nocheck (EV_A_ fd, revents);
1762}
1763
764void 1764void
765ev_feed_fd_event (EV_P_ int fd, int revents) 1765ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
766{ 1766{
767 if (fd >= 0 && fd < anfdmax) 1767 if (fd >= 0 && fd < anfdmax)
768 fd_event (EV_A_ fd, revents); 1768 fd_event_nocheck (EV_A_ fd, revents);
769} 1769}
770 1770
771/* make sure the external fd watch events are in-sync */ 1771/* make sure the external fd watch events are in-sync */
772/* with the kernel/libev internal state */ 1772/* with the kernel/libev internal state */
773inline_size void 1773inline_size void
774fd_reify (EV_P) 1774fd_reify (EV_P)
775{ 1775{
776 int i; 1776 int i;
777 1777
1778#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1779 for (i = 0; i < fdchangecnt; ++i)
1780 {
1781 int fd = fdchanges [i];
1782 ANFD *anfd = anfds + fd;
1783
1784 if (anfd->reify & EV__IOFDSET && anfd->head)
1785 {
1786 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1787
1788 if (handle != anfd->handle)
1789 {
1790 unsigned long arg;
1791
1792 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1793
1794 /* handle changed, but fd didn't - we need to do it in two steps */
1795 backend_modify (EV_A_ fd, anfd->events, 0);
1796 anfd->events = 0;
1797 anfd->handle = handle;
1798 }
1799 }
1800 }
1801#endif
1802
778 for (i = 0; i < fdchangecnt; ++i) 1803 for (i = 0; i < fdchangecnt; ++i)
779 { 1804 {
780 int fd = fdchanges [i]; 1805 int fd = fdchanges [i];
781 ANFD *anfd = anfds + fd; 1806 ANFD *anfd = anfds + fd;
782 ev_io *w; 1807 ev_io *w;
783 1808
784 unsigned char events = 0; 1809 unsigned char o_events = anfd->events;
1810 unsigned char o_reify = anfd->reify;
785 1811
786 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1812 anfd->reify = 0;
787 events |= (unsigned char)w->events;
788 1813
789#if EV_SELECT_IS_WINSOCKET 1814 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
790 if (events)
791 { 1815 {
792 unsigned long arg; 1816 anfd->events = 0;
793 #ifdef EV_FD_TO_WIN32_HANDLE 1817
794 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1818 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
795 #else 1819 anfd->events |= (unsigned char)w->events;
796 anfd->handle = _get_osfhandle (fd); 1820
797 #endif 1821 if (o_events != anfd->events)
798 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1822 o_reify = EV__IOFDSET; /* actually |= */
799 } 1823 }
800#endif
801 1824
802 { 1825 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); 1826 backend_modify (EV_A_ fd, o_events, anfd->events);
811 }
812 } 1827 }
813 1828
814 fdchangecnt = 0; 1829 fdchangecnt = 0;
815} 1830}
816 1831
… …
828 fdchanges [fdchangecnt - 1] = fd; 1843 fdchanges [fdchangecnt - 1] = fd;
829 } 1844 }
830} 1845}
831 1846
832/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1847/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
833inline_speed void 1848inline_speed void ecb_cold
834fd_kill (EV_P_ int fd) 1849fd_kill (EV_P_ int fd)
835{ 1850{
836 ev_io *w; 1851 ev_io *w;
837 1852
838 while ((w = (ev_io *)anfds [fd].head)) 1853 while ((w = (ev_io *)anfds [fd].head))
… …
840 ev_io_stop (EV_A_ w); 1855 ev_io_stop (EV_A_ w);
841 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1856 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
842 } 1857 }
843} 1858}
844 1859
845/* check whether the given fd is atcually valid, for error recovery */ 1860/* check whether the given fd is actually valid, for error recovery */
846inline_size int 1861inline_size int ecb_cold
847fd_valid (int fd) 1862fd_valid (int fd)
848{ 1863{
849#ifdef _WIN32 1864#ifdef _WIN32
850 return _get_osfhandle (fd) != -1; 1865 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
851#else 1866#else
852 return fcntl (fd, F_GETFD) != -1; 1867 return fcntl (fd, F_GETFD) != -1;
853#endif 1868#endif
854} 1869}
855 1870
856/* called on EBADF to verify fds */ 1871/* called on EBADF to verify fds */
857static void noinline 1872static void noinline ecb_cold
858fd_ebadf (EV_P) 1873fd_ebadf (EV_P)
859{ 1874{
860 int fd; 1875 int fd;
861 1876
862 for (fd = 0; fd < anfdmax; ++fd) 1877 for (fd = 0; fd < anfdmax; ++fd)
… …
864 if (!fd_valid (fd) && errno == EBADF) 1879 if (!fd_valid (fd) && errno == EBADF)
865 fd_kill (EV_A_ fd); 1880 fd_kill (EV_A_ fd);
866} 1881}
867 1882
868/* called on ENOMEM in select/poll to kill some fds and retry */ 1883/* called on ENOMEM in select/poll to kill some fds and retry */
869static void noinline 1884static void noinline ecb_cold
870fd_enomem (EV_P) 1885fd_enomem (EV_P)
871{ 1886{
872 int fd; 1887 int fd;
873 1888
874 for (fd = anfdmax; fd--; ) 1889 for (fd = anfdmax; fd--; )
875 if (anfds [fd].events) 1890 if (anfds [fd].events)
876 { 1891 {
877 fd_kill (EV_A_ fd); 1892 fd_kill (EV_A_ fd);
878 return; 1893 break;
879 } 1894 }
880} 1895}
881 1896
882/* usually called after fork if backend needs to re-arm all fds from scratch */ 1897/* usually called after fork if backend needs to re-arm all fds from scratch */
883static void noinline 1898static void noinline
… …
888 for (fd = 0; fd < anfdmax; ++fd) 1903 for (fd = 0; fd < anfdmax; ++fd)
889 if (anfds [fd].events) 1904 if (anfds [fd].events)
890 { 1905 {
891 anfds [fd].events = 0; 1906 anfds [fd].events = 0;
892 anfds [fd].emask = 0; 1907 anfds [fd].emask = 0;
893 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1908 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
894 } 1909 }
895} 1910}
896 1911
1912/* used to prepare libev internal fd's */
1913/* this is not fork-safe */
1914inline_speed void
1915fd_intern (int fd)
1916{
1917#ifdef _WIN32
1918 unsigned long arg = 1;
1919 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1920#else
1921 fcntl (fd, F_SETFD, FD_CLOEXEC);
1922 fcntl (fd, F_SETFL, O_NONBLOCK);
1923#endif
1924}
1925
897/*****************************************************************************/ 1926/*****************************************************************************/
898 1927
899/* 1928/*
900 * the heap functions want a real array index. array index 0 uis guaranteed to not 1929 * 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 1930 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
902 * the branching factor of the d-tree. 1931 * the branching factor of the d-tree.
903 */ 1932 */
904 1933
905/* 1934/*
… …
973 2002
974 for (;;) 2003 for (;;)
975 { 2004 {
976 int c = k << 1; 2005 int c = k << 1;
977 2006
978 if (c > N + HEAP0 - 1) 2007 if (c >= N + HEAP0)
979 break; 2008 break;
980 2009
981 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2010 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
982 ? 1 : 0; 2011 ? 1 : 0;
983 2012
… …
1019 2048
1020/* move an element suitably so it is in a correct place */ 2049/* move an element suitably so it is in a correct place */
1021inline_size void 2050inline_size void
1022adjustheap (ANHE *heap, int N, int k) 2051adjustheap (ANHE *heap, int N, int k)
1023{ 2052{
1024 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2053 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1025 upheap (heap, k); 2054 upheap (heap, k);
1026 else 2055 else
1027 downheap (heap, N, k); 2056 downheap (heap, N, k);
1028} 2057}
1029 2058
… …
1042/*****************************************************************************/ 2071/*****************************************************************************/
1043 2072
1044/* associate signal watchers to a signal signal */ 2073/* associate signal watchers to a signal signal */
1045typedef struct 2074typedef struct
1046{ 2075{
2076 EV_ATOMIC_T pending;
2077#if EV_MULTIPLICITY
2078 EV_P;
2079#endif
1047 WL head; 2080 WL head;
1048 EV_ATOMIC_T gotsig;
1049} ANSIG; 2081} ANSIG;
1050 2082
1051static ANSIG *signals; 2083static ANSIG signals [EV_NSIG - 1];
1052static int signalmax;
1053
1054static EV_ATOMIC_T gotsig;
1055 2084
1056/*****************************************************************************/ 2085/*****************************************************************************/
1057 2086
1058/* used to prepare libev internal fd's */ 2087#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1059/* this is not fork-safe */ 2088
2089static void noinline ecb_cold
2090evpipe_init (EV_P)
2091{
2092 if (!ev_is_active (&pipe_w))
2093 {
2094 int fds [2];
2095
2096# if EV_USE_EVENTFD
2097 fds [0] = -1;
2098 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2099 if (fds [1] < 0 && errno == EINVAL)
2100 fds [1] = eventfd (0, 0);
2101
2102 if (fds [1] < 0)
2103# endif
2104 {
2105 while (pipe (fds))
2106 ev_syserr ("(libev) error creating signal/async pipe");
2107
2108 fd_intern (fds [0]);
2109 }
2110
2111 evpipe [0] = fds [0];
2112
2113 if (evpipe [1] < 0)
2114 evpipe [1] = fds [1]; /* first call, set write fd */
2115 else
2116 {
2117 /* on subsequent calls, do not change evpipe [1] */
2118 /* so that evpipe_write can always rely on its value. */
2119 /* this branch does not do anything sensible on windows, */
2120 /* so must not be executed on windows */
2121
2122 dup2 (fds [1], evpipe [1]);
2123 close (fds [1]);
2124 }
2125
2126 fd_intern (evpipe [1]);
2127
2128 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2129 ev_io_start (EV_A_ &pipe_w);
2130 ev_unref (EV_A); /* watcher should not keep loop alive */
2131 }
2132}
2133
1060inline_speed void 2134inline_speed void
1061fd_intern (int fd) 2135evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1062{ 2136{
1063#ifdef _WIN32 2137 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 2138
1072static void noinline 2139 if (expect_true (*flag))
1073evpipe_init (EV_P) 2140 return;
1074{ 2141
1075 if (!ev_is_active (&pipe_w)) 2142 *flag = 1;
2143 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2144
2145 pipe_write_skipped = 1;
2146
2147 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2148
2149 if (pipe_write_wanted)
1076 { 2150 {
2151 int old_errno;
2152
2153 pipe_write_skipped = 0;
2154 ECB_MEMORY_FENCE_RELEASE;
2155
2156 old_errno = errno; /* save errno because write will clobber it */
2157
1077#if EV_USE_EVENTFD 2158#if EV_USE_EVENTFD
1078 if ((evfd = eventfd (0, 0)) >= 0) 2159 if (evpipe [0] < 0)
1079 { 2160 {
1080 evpipe [0] = -1; 2161 uint64_t counter = 1;
1081 fd_intern (evfd); 2162 write (evpipe [1], &counter, sizeof (uint64_t));
1082 ev_io_set (&pipe_w, evfd, EV_READ);
1083 } 2163 }
1084 else 2164 else
1085#endif 2165#endif
1086 { 2166 {
1087 while (pipe (evpipe)) 2167#ifdef _WIN32
1088 ev_syserr ("(libev) error creating signal/async pipe"); 2168 WSABUF buf;
1089 2169 DWORD sent;
1090 fd_intern (evpipe [0]); 2170 buf.buf = &buf;
1091 fd_intern (evpipe [1]); 2171 buf.len = 1;
1092 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2172 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2173#else
2174 write (evpipe [1], &(evpipe [1]), 1);
2175#endif
1093 } 2176 }
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 2177
1119 errno = old_errno; 2178 errno = old_errno;
1120 } 2179 }
1121} 2180}
1122 2181
1123/* called whenever the libev signal pipe */ 2182/* called whenever the libev signal pipe */
1124/* got some events (signal, async) */ 2183/* got some events (signal, async) */
1125static void 2184static void
1126pipecb (EV_P_ ev_io *iow, int revents) 2185pipecb (EV_P_ ev_io *iow, int revents)
1127{ 2186{
2187 int i;
2188
2189 if (revents & EV_READ)
2190 {
1128#if EV_USE_EVENTFD 2191#if EV_USE_EVENTFD
1129 if (evfd >= 0) 2192 if (evpipe [0] < 0)
1130 { 2193 {
1131 uint64_t counter; 2194 uint64_t counter;
1132 read (evfd, &counter, sizeof (uint64_t)); 2195 read (evpipe [1], &counter, sizeof (uint64_t));
1133 } 2196 }
1134 else 2197 else
1135#endif 2198#endif
1136 { 2199 {
1137 char dummy; 2200 char dummy[4];
2201#ifdef _WIN32
2202 WSABUF buf;
2203 DWORD recvd;
2204 DWORD flags = 0;
2205 buf.buf = dummy;
2206 buf.len = sizeof (dummy);
2207 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2208#else
1138 read (evpipe [0], &dummy, 1); 2209 read (evpipe [0], &dummy, sizeof (dummy));
2210#endif
2211 }
2212 }
2213
2214 pipe_write_skipped = 0;
2215
2216 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2217
2218#if EV_SIGNAL_ENABLE
2219 if (sig_pending)
1139 } 2220 {
2221 sig_pending = 0;
1140 2222
1141 if (gotsig && ev_is_default_loop (EV_A)) 2223 ECB_MEMORY_FENCE;
1142 {
1143 int signum;
1144 gotsig = 0;
1145 2224
1146 for (signum = signalmax; signum--; ) 2225 for (i = EV_NSIG - 1; i--; )
1147 if (signals [signum].gotsig) 2226 if (expect_false (signals [i].pending))
1148 ev_feed_signal_event (EV_A_ signum + 1); 2227 ev_feed_signal_event (EV_A_ i + 1);
1149 } 2228 }
2229#endif
1150 2230
1151#if EV_ASYNC_ENABLE 2231#if EV_ASYNC_ENABLE
1152 if (gotasync) 2232 if (async_pending)
1153 { 2233 {
1154 int i; 2234 async_pending = 0;
1155 gotasync = 0; 2235
2236 ECB_MEMORY_FENCE;
1156 2237
1157 for (i = asynccnt; i--; ) 2238 for (i = asynccnt; i--; )
1158 if (asyncs [i]->sent) 2239 if (asyncs [i]->sent)
1159 { 2240 {
1160 asyncs [i]->sent = 0; 2241 asyncs [i]->sent = 0;
2242 ECB_MEMORY_FENCE_RELEASE;
1161 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2243 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1162 } 2244 }
1163 } 2245 }
1164#endif 2246#endif
1165} 2247}
1166 2248
1167/*****************************************************************************/ 2249/*****************************************************************************/
1168 2250
2251void
2252ev_feed_signal (int signum) EV_THROW
2253{
2254#if EV_MULTIPLICITY
2255 EV_P;
2256 ECB_MEMORY_FENCE_ACQUIRE;
2257 EV_A = signals [signum - 1].loop;
2258
2259 if (!EV_A)
2260 return;
2261#endif
2262
2263 signals [signum - 1].pending = 1;
2264 evpipe_write (EV_A_ &sig_pending);
2265}
2266
1169static void 2267static void
1170ev_sighandler (int signum) 2268ev_sighandler (int signum)
1171{ 2269{
2270#ifdef _WIN32
2271 signal (signum, ev_sighandler);
2272#endif
2273
2274 ev_feed_signal (signum);
2275}
2276
2277void noinline
2278ev_feed_signal_event (EV_P_ int signum) EV_THROW
2279{
2280 WL w;
2281
2282 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2283 return;
2284
2285 --signum;
2286
1172#if EV_MULTIPLICITY 2287#if EV_MULTIPLICITY
1173 struct ev_loop *loop = &default_loop_struct; 2288 /* it is permissible to try to feed a signal to the wrong loop */
1174#endif 2289 /* or, likely more useful, feeding a signal nobody is waiting for */
1175 2290
1176#if _WIN32 2291 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; 2292 return;
2293#endif
1197 2294
1198 signals [signum].gotsig = 0; 2295 signals [signum].pending = 0;
2296 ECB_MEMORY_FENCE_RELEASE;
1199 2297
1200 for (w = signals [signum].head; w; w = w->next) 2298 for (w = signals [signum].head; w; w = w->next)
1201 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2299 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1202} 2300}
1203 2301
2302#if EV_USE_SIGNALFD
2303static void
2304sigfdcb (EV_P_ ev_io *iow, int revents)
2305{
2306 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2307
2308 for (;;)
2309 {
2310 ssize_t res = read (sigfd, si, sizeof (si));
2311
2312 /* not ISO-C, as res might be -1, but works with SuS */
2313 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2314 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2315
2316 if (res < (ssize_t)sizeof (si))
2317 break;
2318 }
2319}
2320#endif
2321
2322#endif
2323
1204/*****************************************************************************/ 2324/*****************************************************************************/
1205 2325
2326#if EV_CHILD_ENABLE
1206static WL childs [EV_PID_HASHSIZE]; 2327static WL childs [EV_PID_HASHSIZE];
1207
1208#ifndef _WIN32
1209 2328
1210static ev_signal childev; 2329static ev_signal childev;
1211 2330
1212#ifndef WIFCONTINUED 2331#ifndef WIFCONTINUED
1213# define WIFCONTINUED(status) 0 2332# define WIFCONTINUED(status) 0
… …
1218child_reap (EV_P_ int chain, int pid, int status) 2337child_reap (EV_P_ int chain, int pid, int status)
1219{ 2338{
1220 ev_child *w; 2339 ev_child *w;
1221 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2340 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1222 2341
1223 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2342 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1224 { 2343 {
1225 if ((w->pid == pid || !w->pid) 2344 if ((w->pid == pid || !w->pid)
1226 && (!traced || (w->flags & 1))) 2345 && (!traced || (w->flags & 1)))
1227 { 2346 {
1228 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2347 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 */ 2372 /* 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 */ 2373 /* 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); 2374 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1256 2375
1257 child_reap (EV_A_ pid, pid, status); 2376 child_reap (EV_A_ pid, pid, status);
1258 if (EV_PID_HASHSIZE > 1) 2377 if ((EV_PID_HASHSIZE) > 1)
1259 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2378 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1260} 2379}
1261 2380
1262#endif 2381#endif
1263 2382
1264/*****************************************************************************/ 2383/*****************************************************************************/
1265 2384
2385#if EV_USE_IOCP
2386# include "ev_iocp.c"
2387#endif
1266#if EV_USE_PORT 2388#if EV_USE_PORT
1267# include "ev_port.c" 2389# include "ev_port.c"
1268#endif 2390#endif
1269#if EV_USE_KQUEUE 2391#if EV_USE_KQUEUE
1270# include "ev_kqueue.c" 2392# include "ev_kqueue.c"
… …
1277#endif 2399#endif
1278#if EV_USE_SELECT 2400#if EV_USE_SELECT
1279# include "ev_select.c" 2401# include "ev_select.c"
1280#endif 2402#endif
1281 2403
1282int 2404int ecb_cold
1283ev_version_major (void) 2405ev_version_major (void) EV_THROW
1284{ 2406{
1285 return EV_VERSION_MAJOR; 2407 return EV_VERSION_MAJOR;
1286} 2408}
1287 2409
1288int 2410int ecb_cold
1289ev_version_minor (void) 2411ev_version_minor (void) EV_THROW
1290{ 2412{
1291 return EV_VERSION_MINOR; 2413 return EV_VERSION_MINOR;
1292} 2414}
1293 2415
1294/* return true if we are running with elevated privileges and should ignore env variables */ 2416/* return true if we are running with elevated privileges and should ignore env variables */
1295int inline_size 2417int inline_size ecb_cold
1296enable_secure (void) 2418enable_secure (void)
1297{ 2419{
1298#ifdef _WIN32 2420#ifdef _WIN32
1299 return 0; 2421 return 0;
1300#else 2422#else
1301 return getuid () != geteuid () 2423 return getuid () != geteuid ()
1302 || getgid () != getegid (); 2424 || getgid () != getegid ();
1303#endif 2425#endif
1304} 2426}
1305 2427
1306unsigned int 2428unsigned int ecb_cold
1307ev_supported_backends (void) 2429ev_supported_backends (void) EV_THROW
1308{ 2430{
1309 unsigned int flags = 0; 2431 unsigned int flags = 0;
1310 2432
1311 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2433 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1312 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2434 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1315 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2437 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1316 2438
1317 return flags; 2439 return flags;
1318} 2440}
1319 2441
1320unsigned int 2442unsigned int ecb_cold
1321ev_recommended_backends (void) 2443ev_recommended_backends (void) EV_THROW
1322{ 2444{
1323 unsigned int flags = ev_supported_backends (); 2445 unsigned int flags = ev_supported_backends ();
1324 2446
1325#ifndef __NetBSD__ 2447#ifndef __NetBSD__
1326 /* kqueue is borked on everything but netbsd apparently */ 2448 /* kqueue is borked on everything but netbsd apparently */
… …
1330#ifdef __APPLE__ 2452#ifdef __APPLE__
1331 /* only select works correctly on that "unix-certified" platform */ 2453 /* only select works correctly on that "unix-certified" platform */
1332 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2454 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1333 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2455 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1334#endif 2456#endif
2457#ifdef __FreeBSD__
2458 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2459#endif
1335 2460
1336 return flags; 2461 return flags;
1337} 2462}
1338 2463
2464unsigned int ecb_cold
2465ev_embeddable_backends (void) EV_THROW
2466{
2467 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2468
2469 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2470 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2471 flags &= ~EVBACKEND_EPOLL;
2472
2473 return flags;
2474}
2475
1339unsigned int 2476unsigned int
1340ev_embeddable_backends (void) 2477ev_backend (EV_P) EV_THROW
1341{ 2478{
1342 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2479 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} 2480}
1350 2481
2482#if EV_FEATURE_API
1351unsigned int 2483unsigned int
1352ev_backend (EV_P) 2484ev_iteration (EV_P) EV_THROW
1353{ 2485{
1354 return backend; 2486 return loop_count;
1355} 2487}
1356 2488
1357unsigned int 2489unsigned int
1358ev_loop_count (EV_P) 2490ev_depth (EV_P) EV_THROW
1359{
1360 return loop_count;
1361}
1362
1363unsigned int
1364ev_loop_depth (EV_P)
1365{ 2491{
1366 return loop_depth; 2492 return loop_depth;
1367} 2493}
1368 2494
1369void 2495void
1370ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2496ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1371{ 2497{
1372 io_blocktime = interval; 2498 io_blocktime = interval;
1373} 2499}
1374 2500
1375void 2501void
1376ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2502ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1377{ 2503{
1378 timeout_blocktime = interval; 2504 timeout_blocktime = interval;
1379} 2505}
1380 2506
2507void
2508ev_set_userdata (EV_P_ void *data) EV_THROW
2509{
2510 userdata = data;
2511}
2512
2513void *
2514ev_userdata (EV_P) EV_THROW
2515{
2516 return userdata;
2517}
2518
2519void
2520ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2521{
2522 invoke_cb = invoke_pending_cb;
2523}
2524
2525void
2526ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2527{
2528 release_cb = release;
2529 acquire_cb = acquire;
2530}
2531#endif
2532
1381/* initialise a loop structure, must be zero-initialised */ 2533/* initialise a loop structure, must be zero-initialised */
1382static void noinline 2534static void noinline ecb_cold
1383loop_init (EV_P_ unsigned int flags) 2535loop_init (EV_P_ unsigned int flags) EV_THROW
1384{ 2536{
1385 if (!backend) 2537 if (!backend)
1386 { 2538 {
2539 origflags = flags;
2540
1387#if EV_USE_REALTIME 2541#if EV_USE_REALTIME
1388 if (!have_realtime) 2542 if (!have_realtime)
1389 { 2543 {
1390 struct timespec ts; 2544 struct timespec ts;
1391 2545
… …
1402 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2556 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1403 have_monotonic = 1; 2557 have_monotonic = 1;
1404 } 2558 }
1405#endif 2559#endif
1406 2560
1407 ev_rt_now = ev_time ();
1408 mn_now = get_clock ();
1409 now_floor = mn_now;
1410 rtmn_diff = ev_rt_now - mn_now;
1411
1412 io_blocktime = 0.;
1413 timeout_blocktime = 0.;
1414 backend = 0;
1415 backend_fd = -1;
1416 gotasync = 0;
1417#if EV_USE_INOTIFY
1418 fs_fd = -2;
1419#endif
1420
1421 /* pid check not overridable via env */ 2561 /* pid check not overridable via env */
1422#ifndef _WIN32 2562#ifndef _WIN32
1423 if (flags & EVFLAG_FORKCHECK) 2563 if (flags & EVFLAG_FORKCHECK)
1424 curpid = getpid (); 2564 curpid = getpid ();
1425#endif 2565#endif
… …
1427 if (!(flags & EVFLAG_NOENV) 2567 if (!(flags & EVFLAG_NOENV)
1428 && !enable_secure () 2568 && !enable_secure ()
1429 && getenv ("LIBEV_FLAGS")) 2569 && getenv ("LIBEV_FLAGS"))
1430 flags = atoi (getenv ("LIBEV_FLAGS")); 2570 flags = atoi (getenv ("LIBEV_FLAGS"));
1431 2571
1432 if (!(flags & 0x0000ffffU)) 2572 ev_rt_now = ev_time ();
2573 mn_now = get_clock ();
2574 now_floor = mn_now;
2575 rtmn_diff = ev_rt_now - mn_now;
2576#if EV_FEATURE_API
2577 invoke_cb = ev_invoke_pending;
2578#endif
2579
2580 io_blocktime = 0.;
2581 timeout_blocktime = 0.;
2582 backend = 0;
2583 backend_fd = -1;
2584 sig_pending = 0;
2585#if EV_ASYNC_ENABLE
2586 async_pending = 0;
2587#endif
2588 pipe_write_skipped = 0;
2589 pipe_write_wanted = 0;
2590 evpipe [0] = -1;
2591 evpipe [1] = -1;
2592#if EV_USE_INOTIFY
2593 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2594#endif
2595#if EV_USE_SIGNALFD
2596 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2597#endif
2598
2599 if (!(flags & EVBACKEND_MASK))
1433 flags |= ev_recommended_backends (); 2600 flags |= ev_recommended_backends ();
1434 2601
2602#if EV_USE_IOCP
2603 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2604#endif
1435#if EV_USE_PORT 2605#if EV_USE_PORT
1436 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2606 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1437#endif 2607#endif
1438#if EV_USE_KQUEUE 2608#if EV_USE_KQUEUE
1439 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2609 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1448 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2618 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1449#endif 2619#endif
1450 2620
1451 ev_prepare_init (&pending_w, pendingcb); 2621 ev_prepare_init (&pending_w, pendingcb);
1452 2622
2623#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1453 ev_init (&pipe_w, pipecb); 2624 ev_init (&pipe_w, pipecb);
1454 ev_set_priority (&pipe_w, EV_MAXPRI); 2625 ev_set_priority (&pipe_w, EV_MAXPRI);
2626#endif
1455 } 2627 }
1456} 2628}
1457 2629
1458/* free up a loop structure */ 2630/* free up a loop structure */
1459static void noinline 2631void ecb_cold
1460loop_destroy (EV_P) 2632ev_loop_destroy (EV_P)
1461{ 2633{
1462 int i; 2634 int i;
1463 2635
2636#if EV_MULTIPLICITY
2637 /* mimic free (0) */
2638 if (!EV_A)
2639 return;
2640#endif
2641
2642#if EV_CLEANUP_ENABLE
2643 /* queue cleanup watchers (and execute them) */
2644 if (expect_false (cleanupcnt))
2645 {
2646 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2647 EV_INVOKE_PENDING;
2648 }
2649#endif
2650
2651#if EV_CHILD_ENABLE
2652 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2653 {
2654 ev_ref (EV_A); /* child watcher */
2655 ev_signal_stop (EV_A_ &childev);
2656 }
2657#endif
2658
1464 if (ev_is_active (&pipe_w)) 2659 if (ev_is_active (&pipe_w))
1465 { 2660 {
1466 ev_ref (EV_A); /* signal watcher */ 2661 /*ev_ref (EV_A);*/
1467 ev_io_stop (EV_A_ &pipe_w); 2662 /*ev_io_stop (EV_A_ &pipe_w);*/
1468 2663
2664 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2665 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2666 }
2667
1469#if EV_USE_EVENTFD 2668#if EV_USE_SIGNALFD
1470 if (evfd >= 0) 2669 if (ev_is_active (&sigfd_w))
1471 close (evfd); 2670 close (sigfd);
1472#endif 2671#endif
1473
1474 if (evpipe [0] >= 0)
1475 {
1476 close (evpipe [0]);
1477 close (evpipe [1]);
1478 }
1479 }
1480 2672
1481#if EV_USE_INOTIFY 2673#if EV_USE_INOTIFY
1482 if (fs_fd >= 0) 2674 if (fs_fd >= 0)
1483 close (fs_fd); 2675 close (fs_fd);
1484#endif 2676#endif
1485 2677
1486 if (backend_fd >= 0) 2678 if (backend_fd >= 0)
1487 close (backend_fd); 2679 close (backend_fd);
1488 2680
2681#if EV_USE_IOCP
2682 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2683#endif
1489#if EV_USE_PORT 2684#if EV_USE_PORT
1490 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2685 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1491#endif 2686#endif
1492#if EV_USE_KQUEUE 2687#if EV_USE_KQUEUE
1493 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2688 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1508#if EV_IDLE_ENABLE 2703#if EV_IDLE_ENABLE
1509 array_free (idle, [i]); 2704 array_free (idle, [i]);
1510#endif 2705#endif
1511 } 2706 }
1512 2707
1513 ev_free (anfds); anfdmax = 0; 2708 ev_free (anfds); anfds = 0; anfdmax = 0;
1514 2709
1515 /* have to use the microsoft-never-gets-it-right macro */ 2710 /* have to use the microsoft-never-gets-it-right macro */
1516 array_free (rfeed, EMPTY); 2711 array_free (rfeed, EMPTY);
1517 array_free (fdchange, EMPTY); 2712 array_free (fdchange, EMPTY);
1518 array_free (timer, EMPTY); 2713 array_free (timer, EMPTY);
… …
1520 array_free (periodic, EMPTY); 2715 array_free (periodic, EMPTY);
1521#endif 2716#endif
1522#if EV_FORK_ENABLE 2717#if EV_FORK_ENABLE
1523 array_free (fork, EMPTY); 2718 array_free (fork, EMPTY);
1524#endif 2719#endif
2720#if EV_CLEANUP_ENABLE
2721 array_free (cleanup, EMPTY);
2722#endif
1525 array_free (prepare, EMPTY); 2723 array_free (prepare, EMPTY);
1526 array_free (check, EMPTY); 2724 array_free (check, EMPTY);
1527#if EV_ASYNC_ENABLE 2725#if EV_ASYNC_ENABLE
1528 array_free (async, EMPTY); 2726 array_free (async, EMPTY);
1529#endif 2727#endif
1530 2728
1531 backend = 0; 2729 backend = 0;
2730
2731#if EV_MULTIPLICITY
2732 if (ev_is_default_loop (EV_A))
2733#endif
2734 ev_default_loop_ptr = 0;
2735#if EV_MULTIPLICITY
2736 else
2737 ev_free (EV_A);
2738#endif
1532} 2739}
1533 2740
1534#if EV_USE_INOTIFY 2741#if EV_USE_INOTIFY
1535inline_size void infy_fork (EV_P); 2742inline_size void infy_fork (EV_P);
1536#endif 2743#endif
… …
1549#endif 2756#endif
1550#if EV_USE_INOTIFY 2757#if EV_USE_INOTIFY
1551 infy_fork (EV_A); 2758 infy_fork (EV_A);
1552#endif 2759#endif
1553 2760
2761#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1554 if (ev_is_active (&pipe_w)) 2762 if (ev_is_active (&pipe_w))
1555 { 2763 {
1556 /* this "locks" the handlers against writing to the pipe */ 2764 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1557 /* while we modify the fd vars */
1558 gotsig = 1;
1559#if EV_ASYNC_ENABLE
1560 gotasync = 1;
1561#endif
1562 2765
1563 ev_ref (EV_A); 2766 ev_ref (EV_A);
1564 ev_io_stop (EV_A_ &pipe_w); 2767 ev_io_stop (EV_A_ &pipe_w);
1565 2768
1566#if EV_USE_EVENTFD
1567 if (evfd >= 0)
1568 close (evfd);
1569#endif
1570
1571 if (evpipe [0] >= 0) 2769 if (evpipe [0] >= 0)
1572 { 2770 EV_WIN32_CLOSE_FD (evpipe [0]);
1573 close (evpipe [0]);
1574 close (evpipe [1]);
1575 }
1576 2771
1577 evpipe_init (EV_A); 2772 evpipe_init (EV_A);
1578 /* now iterate over everything, in case we missed something */ 2773 /* iterate over everything, in case we missed something before */
1579 pipecb (EV_A_ &pipe_w, EV_READ); 2774 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1580 } 2775 }
2776#endif
1581 2777
1582 postfork = 0; 2778 postfork = 0;
1583} 2779}
1584 2780
1585#if EV_MULTIPLICITY 2781#if EV_MULTIPLICITY
1586 2782
1587struct ev_loop * 2783struct ev_loop * ecb_cold
1588ev_loop_new (unsigned int flags) 2784ev_loop_new (unsigned int flags) EV_THROW
1589{ 2785{
1590 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2786 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1591 2787
1592 memset (loop, 0, sizeof (struct ev_loop)); 2788 memset (EV_A, 0, sizeof (struct ev_loop));
1593
1594 loop_init (EV_A_ flags); 2789 loop_init (EV_A_ flags);
1595 2790
1596 if (ev_backend (EV_A)) 2791 if (ev_backend (EV_A))
1597 return loop; 2792 return EV_A;
1598 2793
2794 ev_free (EV_A);
1599 return 0; 2795 return 0;
1600} 2796}
1601 2797
1602void 2798#endif /* multiplicity */
1603ev_loop_destroy (EV_P)
1604{
1605 loop_destroy (EV_A);
1606 ev_free (loop);
1607}
1608
1609void
1610ev_loop_fork (EV_P)
1611{
1612 postfork = 1; /* must be in line with ev_default_fork */
1613}
1614 2799
1615#if EV_VERIFY 2800#if EV_VERIFY
1616static void noinline 2801static void noinline ecb_cold
1617verify_watcher (EV_P_ W w) 2802verify_watcher (EV_P_ W w)
1618{ 2803{
1619 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2804 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1620 2805
1621 if (w->pending) 2806 if (w->pending)
1622 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2807 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1623} 2808}
1624 2809
1625static void noinline 2810static void noinline ecb_cold
1626verify_heap (EV_P_ ANHE *heap, int N) 2811verify_heap (EV_P_ ANHE *heap, int N)
1627{ 2812{
1628 int i; 2813 int i;
1629 2814
1630 for (i = HEAP0; i < N + HEAP0; ++i) 2815 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1635 2820
1636 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2821 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1637 } 2822 }
1638} 2823}
1639 2824
1640static void noinline 2825static void noinline ecb_cold
1641array_verify (EV_P_ W *ws, int cnt) 2826array_verify (EV_P_ W *ws, int cnt)
1642{ 2827{
1643 while (cnt--) 2828 while (cnt--)
1644 { 2829 {
1645 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2830 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1646 verify_watcher (EV_A_ ws [cnt]); 2831 verify_watcher (EV_A_ ws [cnt]);
1647 } 2832 }
1648} 2833}
1649#endif 2834#endif
1650 2835
1651void 2836#if EV_FEATURE_API
1652ev_loop_verify (EV_P) 2837void ecb_cold
2838ev_verify (EV_P) EV_THROW
1653{ 2839{
1654#if EV_VERIFY 2840#if EV_VERIFY
1655 int i; 2841 int i;
1656 WL w; 2842 WL w, w2;
1657 2843
1658 assert (activecnt >= -1); 2844 assert (activecnt >= -1);
1659 2845
1660 assert (fdchangemax >= fdchangecnt); 2846 assert (fdchangemax >= fdchangecnt);
1661 for (i = 0; i < fdchangecnt; ++i) 2847 for (i = 0; i < fdchangecnt; ++i)
1662 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2848 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1663 2849
1664 assert (anfdmax >= 0); 2850 assert (anfdmax >= 0);
1665 for (i = 0; i < anfdmax; ++i) 2851 for (i = 0; i < anfdmax; ++i)
2852 {
2853 int j = 0;
2854
1666 for (w = anfds [i].head; w; w = w->next) 2855 for (w = w2 = anfds [i].head; w; w = w->next)
1667 { 2856 {
1668 verify_watcher (EV_A_ (W)w); 2857 verify_watcher (EV_A_ (W)w);
2858
2859 if (j++ & 1)
2860 {
2861 assert (("libev: io watcher list contains a loop", w != w2));
2862 w2 = w2->next;
2863 }
2864
1669 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2865 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1670 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2866 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1671 } 2867 }
2868 }
1672 2869
1673 assert (timermax >= timercnt); 2870 assert (timermax >= timercnt);
1674 verify_heap (EV_A_ timers, timercnt); 2871 verify_heap (EV_A_ timers, timercnt);
1675 2872
1676#if EV_PERIODIC_ENABLE 2873#if EV_PERIODIC_ENABLE
… …
1691#if EV_FORK_ENABLE 2888#if EV_FORK_ENABLE
1692 assert (forkmax >= forkcnt); 2889 assert (forkmax >= forkcnt);
1693 array_verify (EV_A_ (W *)forks, forkcnt); 2890 array_verify (EV_A_ (W *)forks, forkcnt);
1694#endif 2891#endif
1695 2892
2893#if EV_CLEANUP_ENABLE
2894 assert (cleanupmax >= cleanupcnt);
2895 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2896#endif
2897
1696#if EV_ASYNC_ENABLE 2898#if EV_ASYNC_ENABLE
1697 assert (asyncmax >= asynccnt); 2899 assert (asyncmax >= asynccnt);
1698 array_verify (EV_A_ (W *)asyncs, asynccnt); 2900 array_verify (EV_A_ (W *)asyncs, asynccnt);
1699#endif 2901#endif
1700 2902
2903#if EV_PREPARE_ENABLE
1701 assert (preparemax >= preparecnt); 2904 assert (preparemax >= preparecnt);
1702 array_verify (EV_A_ (W *)prepares, preparecnt); 2905 array_verify (EV_A_ (W *)prepares, preparecnt);
2906#endif
1703 2907
2908#if EV_CHECK_ENABLE
1704 assert (checkmax >= checkcnt); 2909 assert (checkmax >= checkcnt);
1705 array_verify (EV_A_ (W *)checks, checkcnt); 2910 array_verify (EV_A_ (W *)checks, checkcnt);
2911#endif
1706 2912
1707# if 0 2913# if 0
2914#if EV_CHILD_ENABLE
1708 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2915 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1709 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2916 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2917#endif
1710# endif 2918# endif
1711#endif 2919#endif
1712} 2920}
1713 2921#endif
1714#endif /* multiplicity */
1715 2922
1716#if EV_MULTIPLICITY 2923#if EV_MULTIPLICITY
1717struct ev_loop * 2924struct ev_loop * ecb_cold
1718ev_default_loop_init (unsigned int flags)
1719#else 2925#else
1720int 2926int
2927#endif
1721ev_default_loop (unsigned int flags) 2928ev_default_loop (unsigned int flags) EV_THROW
1722#endif
1723{ 2929{
1724 if (!ev_default_loop_ptr) 2930 if (!ev_default_loop_ptr)
1725 { 2931 {
1726#if EV_MULTIPLICITY 2932#if EV_MULTIPLICITY
1727 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2933 EV_P = ev_default_loop_ptr = &default_loop_struct;
1728#else 2934#else
1729 ev_default_loop_ptr = 1; 2935 ev_default_loop_ptr = 1;
1730#endif 2936#endif
1731 2937
1732 loop_init (EV_A_ flags); 2938 loop_init (EV_A_ flags);
1733 2939
1734 if (ev_backend (EV_A)) 2940 if (ev_backend (EV_A))
1735 { 2941 {
1736#ifndef _WIN32 2942#if EV_CHILD_ENABLE
1737 ev_signal_init (&childev, childcb, SIGCHLD); 2943 ev_signal_init (&childev, childcb, SIGCHLD);
1738 ev_set_priority (&childev, EV_MAXPRI); 2944 ev_set_priority (&childev, EV_MAXPRI);
1739 ev_signal_start (EV_A_ &childev); 2945 ev_signal_start (EV_A_ &childev);
1740 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2946 ev_unref (EV_A); /* child watcher should not keep loop alive */
1741#endif 2947#endif
… …
1746 2952
1747 return ev_default_loop_ptr; 2953 return ev_default_loop_ptr;
1748} 2954}
1749 2955
1750void 2956void
1751ev_default_destroy (void) 2957ev_loop_fork (EV_P) EV_THROW
1752{ 2958{
1753#if EV_MULTIPLICITY 2959 postfork = 1;
1754 struct ev_loop *loop = ev_default_loop_ptr;
1755#endif
1756
1757 ev_default_loop_ptr = 0;
1758
1759#ifndef _WIN32
1760 ev_ref (EV_A); /* child watcher */
1761 ev_signal_stop (EV_A_ &childev);
1762#endif
1763
1764 loop_destroy (EV_A);
1765}
1766
1767void
1768ev_default_fork (void)
1769{
1770#if EV_MULTIPLICITY
1771 struct ev_loop *loop = ev_default_loop_ptr;
1772#endif
1773
1774 postfork = 1; /* must be in line with ev_loop_fork */
1775} 2960}
1776 2961
1777/*****************************************************************************/ 2962/*****************************************************************************/
1778 2963
1779void 2964void
1780ev_invoke (EV_P_ void *w, int revents) 2965ev_invoke (EV_P_ void *w, int revents)
1781{ 2966{
1782 EV_CB_INVOKE ((W)w, revents); 2967 EV_CB_INVOKE ((W)w, revents);
1783} 2968}
1784 2969
1785inline_speed void 2970unsigned int
1786call_pending (EV_P) 2971ev_pending_count (EV_P) EV_THROW
1787{ 2972{
1788 int pri; 2973 int pri;
2974 unsigned int count = 0;
1789 2975
1790 for (pri = NUMPRI; pri--; ) 2976 for (pri = NUMPRI; pri--; )
2977 count += pendingcnt [pri];
2978
2979 return count;
2980}
2981
2982void noinline
2983ev_invoke_pending (EV_P)
2984{
2985 pendingpri = NUMPRI;
2986
2987 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2988 {
2989 --pendingpri;
2990
1791 while (pendingcnt [pri]) 2991 while (pendingcnt [pendingpri])
1792 { 2992 {
1793 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2993 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1794 2994
1795 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1796 /* ^ this is no longer true, as pending_w could be here */
1797
1798 p->w->pending = 0; 2995 p->w->pending = 0;
1799 EV_CB_INVOKE (p->w, p->events); 2996 EV_CB_INVOKE (p->w, p->events);
1800 EV_FREQUENT_CHECK; 2997 EV_FREQUENT_CHECK;
1801 } 2998 }
2999 }
1802} 3000}
1803 3001
1804#if EV_IDLE_ENABLE 3002#if EV_IDLE_ENABLE
1805/* make idle watchers pending. this handles the "call-idle */ 3003/* make idle watchers pending. this handles the "call-idle */
1806/* only when higher priorities are idle" logic */ 3004/* only when higher priorities are idle" logic */
… …
1858 EV_FREQUENT_CHECK; 3056 EV_FREQUENT_CHECK;
1859 feed_reverse (EV_A_ (W)w); 3057 feed_reverse (EV_A_ (W)w);
1860 } 3058 }
1861 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3059 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1862 3060
1863 feed_reverse_done (EV_A_ EV_TIMEOUT); 3061 feed_reverse_done (EV_A_ EV_TIMER);
1864 } 3062 }
1865} 3063}
1866 3064
1867#if EV_PERIODIC_ENABLE 3065#if EV_PERIODIC_ENABLE
3066
3067static void noinline
3068periodic_recalc (EV_P_ ev_periodic *w)
3069{
3070 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3071 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3072
3073 /* the above almost always errs on the low side */
3074 while (at <= ev_rt_now)
3075 {
3076 ev_tstamp nat = at + w->interval;
3077
3078 /* when resolution fails us, we use ev_rt_now */
3079 if (expect_false (nat == at))
3080 {
3081 at = ev_rt_now;
3082 break;
3083 }
3084
3085 at = nat;
3086 }
3087
3088 ev_at (w) = at;
3089}
3090
1868/* make periodics pending */ 3091/* make periodics pending */
1869inline_size void 3092inline_size void
1870periodics_reify (EV_P) 3093periodics_reify (EV_P)
1871{ 3094{
1872 EV_FREQUENT_CHECK; 3095 EV_FREQUENT_CHECK;
1873 3096
1874 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3097 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1875 { 3098 {
1876 int feed_count = 0;
1877
1878 do 3099 do
1879 { 3100 {
1880 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3101 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1881 3102
1882 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3103 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1891 ANHE_at_cache (periodics [HEAP0]); 3112 ANHE_at_cache (periodics [HEAP0]);
1892 downheap (periodics, periodiccnt, HEAP0); 3113 downheap (periodics, periodiccnt, HEAP0);
1893 } 3114 }
1894 else if (w->interval) 3115 else if (w->interval)
1895 { 3116 {
1896 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3117 periodic_recalc (EV_A_ w);
1897 /* if next trigger time is not sufficiently in the future, put it there */
1898 /* this might happen because of floating point inexactness */
1899 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1900 {
1901 ev_at (w) += w->interval;
1902
1903 /* if interval is unreasonably low we might still have a time in the past */
1904 /* so correct this. this will make the periodic very inexact, but the user */
1905 /* has effectively asked to get triggered more often than possible */
1906 if (ev_at (w) < ev_rt_now)
1907 ev_at (w) = ev_rt_now;
1908 }
1909
1910 ANHE_at_cache (periodics [HEAP0]); 3118 ANHE_at_cache (periodics [HEAP0]);
1911 downheap (periodics, periodiccnt, HEAP0); 3119 downheap (periodics, periodiccnt, HEAP0);
1912 } 3120 }
1913 else 3121 else
1914 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3122 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1921 feed_reverse_done (EV_A_ EV_PERIODIC); 3129 feed_reverse_done (EV_A_ EV_PERIODIC);
1922 } 3130 }
1923} 3131}
1924 3132
1925/* simply recalculate all periodics */ 3133/* simply recalculate all periodics */
1926/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3134/* TODO: maybe ensure that at least one event happens when jumping forward? */
1927static void noinline 3135static void noinline ecb_cold
1928periodics_reschedule (EV_P) 3136periodics_reschedule (EV_P)
1929{ 3137{
1930 int i; 3138 int i;
1931 3139
1932 /* adjust periodics after time jump */ 3140 /* adjust periodics after time jump */
… …
1935 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3143 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1936 3144
1937 if (w->reschedule_cb) 3145 if (w->reschedule_cb)
1938 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3146 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1939 else if (w->interval) 3147 else if (w->interval)
1940 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3148 periodic_recalc (EV_A_ w);
1941 3149
1942 ANHE_at_cache (periodics [i]); 3150 ANHE_at_cache (periodics [i]);
1943 } 3151 }
1944 3152
1945 reheap (periodics, periodiccnt); 3153 reheap (periodics, periodiccnt);
1946} 3154}
1947#endif 3155#endif
1948 3156
1949/* adjust all timers by a given offset */ 3157/* adjust all timers by a given offset */
1950static void noinline 3158static void noinline ecb_cold
1951timers_reschedule (EV_P_ ev_tstamp adjust) 3159timers_reschedule (EV_P_ ev_tstamp adjust)
1952{ 3160{
1953 int i; 3161 int i;
1954 3162
1955 for (i = 0; i < timercnt; ++i) 3163 for (i = 0; i < timercnt; ++i)
… …
1959 ANHE_at_cache (*he); 3167 ANHE_at_cache (*he);
1960 } 3168 }
1961} 3169}
1962 3170
1963/* fetch new monotonic and realtime times from the kernel */ 3171/* fetch new monotonic and realtime times from the kernel */
1964/* also detetc if there was a timejump, and act accordingly */ 3172/* also detect if there was a timejump, and act accordingly */
1965inline_speed void 3173inline_speed void
1966time_update (EV_P_ ev_tstamp max_block) 3174time_update (EV_P_ ev_tstamp max_block)
1967{ 3175{
1968#if EV_USE_MONOTONIC 3176#if EV_USE_MONOTONIC
1969 if (expect_true (have_monotonic)) 3177 if (expect_true (have_monotonic))
… …
1992 * doesn't hurt either as we only do this on time-jumps or 3200 * doesn't hurt either as we only do this on time-jumps or
1993 * in the unlikely event of having been preempted here. 3201 * in the unlikely event of having been preempted here.
1994 */ 3202 */
1995 for (i = 4; --i; ) 3203 for (i = 4; --i; )
1996 { 3204 {
3205 ev_tstamp diff;
1997 rtmn_diff = ev_rt_now - mn_now; 3206 rtmn_diff = ev_rt_now - mn_now;
1998 3207
3208 diff = odiff - rtmn_diff;
3209
1999 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3210 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2000 return; /* all is well */ 3211 return; /* all is well */
2001 3212
2002 ev_rt_now = ev_time (); 3213 ev_rt_now = ev_time ();
2003 mn_now = get_clock (); 3214 mn_now = get_clock ();
2004 now_floor = mn_now; 3215 now_floor = mn_now;
… …
2026 3237
2027 mn_now = ev_rt_now; 3238 mn_now = ev_rt_now;
2028 } 3239 }
2029} 3240}
2030 3241
2031void 3242int
2032ev_loop (EV_P_ int flags) 3243ev_run (EV_P_ int flags)
2033{ 3244{
3245#if EV_FEATURE_API
2034 ++loop_depth; 3246 ++loop_depth;
3247#endif
2035 3248
3249 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3250
2036 loop_done = EVUNLOOP_CANCEL; 3251 loop_done = EVBREAK_CANCEL;
2037 3252
2038 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3253 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2039 3254
2040 do 3255 do
2041 { 3256 {
2042#if EV_VERIFY >= 2 3257#if EV_VERIFY >= 2
2043 ev_loop_verify (EV_A); 3258 ev_verify (EV_A);
2044#endif 3259#endif
2045 3260
2046#ifndef _WIN32 3261#ifndef _WIN32
2047 if (expect_false (curpid)) /* penalise the forking check even more */ 3262 if (expect_false (curpid)) /* penalise the forking check even more */
2048 if (expect_false (getpid () != curpid)) 3263 if (expect_false (getpid () != curpid))
… …
2056 /* we might have forked, so queue fork handlers */ 3271 /* we might have forked, so queue fork handlers */
2057 if (expect_false (postfork)) 3272 if (expect_false (postfork))
2058 if (forkcnt) 3273 if (forkcnt)
2059 { 3274 {
2060 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3275 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2061 call_pending (EV_A); 3276 EV_INVOKE_PENDING;
2062 } 3277 }
2063#endif 3278#endif
2064 3279
3280#if EV_PREPARE_ENABLE
2065 /* queue prepare watchers (and execute them) */ 3281 /* queue prepare watchers (and execute them) */
2066 if (expect_false (preparecnt)) 3282 if (expect_false (preparecnt))
2067 { 3283 {
2068 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3284 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2069 call_pending (EV_A); 3285 EV_INVOKE_PENDING;
2070 } 3286 }
3287#endif
3288
3289 if (expect_false (loop_done))
3290 break;
2071 3291
2072 /* we might have forked, so reify kernel state if necessary */ 3292 /* we might have forked, so reify kernel state if necessary */
2073 if (expect_false (postfork)) 3293 if (expect_false (postfork))
2074 loop_fork (EV_A); 3294 loop_fork (EV_A);
2075 3295
… …
2079 /* calculate blocking time */ 3299 /* calculate blocking time */
2080 { 3300 {
2081 ev_tstamp waittime = 0.; 3301 ev_tstamp waittime = 0.;
2082 ev_tstamp sleeptime = 0.; 3302 ev_tstamp sleeptime = 0.;
2083 3303
3304 /* remember old timestamp for io_blocktime calculation */
3305 ev_tstamp prev_mn_now = mn_now;
3306
3307 /* update time to cancel out callback processing overhead */
3308 time_update (EV_A_ 1e100);
3309
3310 /* from now on, we want a pipe-wake-up */
3311 pipe_write_wanted = 1;
3312
3313 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3314
2084 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3315 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2085 { 3316 {
2086 /* remember old timestamp for io_blocktime calculation */
2087 ev_tstamp prev_mn_now = mn_now;
2088
2089 /* update time to cancel out callback processing overhead */
2090 time_update (EV_A_ 1e100);
2091
2092 waittime = MAX_BLOCKTIME; 3317 waittime = MAX_BLOCKTIME;
2093 3318
2094 if (timercnt) 3319 if (timercnt)
2095 { 3320 {
2096 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3321 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2097 if (waittime > to) waittime = to; 3322 if (waittime > to) waittime = to;
2098 } 3323 }
2099 3324
2100#if EV_PERIODIC_ENABLE 3325#if EV_PERIODIC_ENABLE
2101 if (periodiccnt) 3326 if (periodiccnt)
2102 { 3327 {
2103 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3328 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2104 if (waittime > to) waittime = to; 3329 if (waittime > to) waittime = to;
2105 } 3330 }
2106#endif 3331#endif
2107 3332
2108 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3333 /* don't let timeouts decrease the waittime below timeout_blocktime */
2109 if (expect_false (waittime < timeout_blocktime)) 3334 if (expect_false (waittime < timeout_blocktime))
2110 waittime = timeout_blocktime; 3335 waittime = timeout_blocktime;
3336
3337 /* at this point, we NEED to wait, so we have to ensure */
3338 /* to pass a minimum nonzero value to the backend */
3339 if (expect_false (waittime < backend_mintime))
3340 waittime = backend_mintime;
2111 3341
2112 /* extra check because io_blocktime is commonly 0 */ 3342 /* extra check because io_blocktime is commonly 0 */
2113 if (expect_false (io_blocktime)) 3343 if (expect_false (io_blocktime))
2114 { 3344 {
2115 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3345 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2116 3346
2117 if (sleeptime > waittime - backend_fudge) 3347 if (sleeptime > waittime - backend_mintime)
2118 sleeptime = waittime - backend_fudge; 3348 sleeptime = waittime - backend_mintime;
2119 3349
2120 if (expect_true (sleeptime > 0.)) 3350 if (expect_true (sleeptime > 0.))
2121 { 3351 {
2122 ev_sleep (sleeptime); 3352 ev_sleep (sleeptime);
2123 waittime -= sleeptime; 3353 waittime -= sleeptime;
2124 } 3354 }
2125 } 3355 }
2126 } 3356 }
2127 3357
3358#if EV_FEATURE_API
2128 ++loop_count; 3359 ++loop_count;
3360#endif
3361 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2129 backend_poll (EV_A_ waittime); 3362 backend_poll (EV_A_ waittime);
3363 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3364
3365 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3366
3367 ECB_MEMORY_FENCE_ACQUIRE;
3368 if (pipe_write_skipped)
3369 {
3370 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3371 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3372 }
3373
2130 3374
2131 /* update ev_rt_now, do magic */ 3375 /* update ev_rt_now, do magic */
2132 time_update (EV_A_ waittime + sleeptime); 3376 time_update (EV_A_ waittime + sleeptime);
2133 } 3377 }
2134 3378
… …
2141#if EV_IDLE_ENABLE 3385#if EV_IDLE_ENABLE
2142 /* queue idle watchers unless other events are pending */ 3386 /* queue idle watchers unless other events are pending */
2143 idle_reify (EV_A); 3387 idle_reify (EV_A);
2144#endif 3388#endif
2145 3389
3390#if EV_CHECK_ENABLE
2146 /* queue check watchers, to be executed first */ 3391 /* queue check watchers, to be executed first */
2147 if (expect_false (checkcnt)) 3392 if (expect_false (checkcnt))
2148 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3393 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3394#endif
2149 3395
2150 call_pending (EV_A); 3396 EV_INVOKE_PENDING;
2151 } 3397 }
2152 while (expect_true ( 3398 while (expect_true (
2153 activecnt 3399 activecnt
2154 && !loop_done 3400 && !loop_done
2155 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3401 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2156 )); 3402 ));
2157 3403
2158 if (loop_done == EVUNLOOP_ONE) 3404 if (loop_done == EVBREAK_ONE)
2159 loop_done = EVUNLOOP_CANCEL; 3405 loop_done = EVBREAK_CANCEL;
2160 3406
3407#if EV_FEATURE_API
2161 --loop_depth; 3408 --loop_depth;
3409#endif
3410
3411 return activecnt;
2162} 3412}
2163 3413
2164void 3414void
2165ev_unloop (EV_P_ int how) 3415ev_break (EV_P_ int how) EV_THROW
2166{ 3416{
2167 loop_done = how; 3417 loop_done = how;
2168} 3418}
2169 3419
2170void 3420void
2171ev_ref (EV_P) 3421ev_ref (EV_P) EV_THROW
2172{ 3422{
2173 ++activecnt; 3423 ++activecnt;
2174} 3424}
2175 3425
2176void 3426void
2177ev_unref (EV_P) 3427ev_unref (EV_P) EV_THROW
2178{ 3428{
2179 --activecnt; 3429 --activecnt;
2180} 3430}
2181 3431
2182void 3432void
2183ev_now_update (EV_P) 3433ev_now_update (EV_P) EV_THROW
2184{ 3434{
2185 time_update (EV_A_ 1e100); 3435 time_update (EV_A_ 1e100);
2186} 3436}
2187 3437
2188void 3438void
2189ev_suspend (EV_P) 3439ev_suspend (EV_P) EV_THROW
2190{ 3440{
2191 ev_now_update (EV_A); 3441 ev_now_update (EV_A);
2192} 3442}
2193 3443
2194void 3444void
2195ev_resume (EV_P) 3445ev_resume (EV_P) EV_THROW
2196{ 3446{
2197 ev_tstamp mn_prev = mn_now; 3447 ev_tstamp mn_prev = mn_now;
2198 3448
2199 ev_now_update (EV_A); 3449 ev_now_update (EV_A);
2200 timers_reschedule (EV_A_ mn_now - mn_prev); 3450 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2217inline_size void 3467inline_size void
2218wlist_del (WL *head, WL elem) 3468wlist_del (WL *head, WL elem)
2219{ 3469{
2220 while (*head) 3470 while (*head)
2221 { 3471 {
2222 if (*head == elem) 3472 if (expect_true (*head == elem))
2223 { 3473 {
2224 *head = elem->next; 3474 *head = elem->next;
2225 return; 3475 break;
2226 } 3476 }
2227 3477
2228 head = &(*head)->next; 3478 head = &(*head)->next;
2229 } 3479 }
2230} 3480}
… …
2239 w->pending = 0; 3489 w->pending = 0;
2240 } 3490 }
2241} 3491}
2242 3492
2243int 3493int
2244ev_clear_pending (EV_P_ void *w) 3494ev_clear_pending (EV_P_ void *w) EV_THROW
2245{ 3495{
2246 W w_ = (W)w; 3496 W w_ = (W)w;
2247 int pending = w_->pending; 3497 int pending = w_->pending;
2248 3498
2249 if (expect_true (pending)) 3499 if (expect_true (pending))
… …
2258} 3508}
2259 3509
2260inline_size void 3510inline_size void
2261pri_adjust (EV_P_ W w) 3511pri_adjust (EV_P_ W w)
2262{ 3512{
2263 int pri = w->priority; 3513 int pri = ev_priority (w);
2264 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3514 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2265 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3515 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2266 w->priority = pri; 3516 ev_set_priority (w, pri);
2267} 3517}
2268 3518
2269inline_speed void 3519inline_speed void
2270ev_start (EV_P_ W w, int active) 3520ev_start (EV_P_ W w, int active)
2271{ 3521{
… …
2282} 3532}
2283 3533
2284/*****************************************************************************/ 3534/*****************************************************************************/
2285 3535
2286void noinline 3536void noinline
2287ev_io_start (EV_P_ ev_io *w) 3537ev_io_start (EV_P_ ev_io *w) EV_THROW
2288{ 3538{
2289 int fd = w->fd; 3539 int fd = w->fd;
2290 3540
2291 if (expect_false (ev_is_active (w))) 3541 if (expect_false (ev_is_active (w)))
2292 return; 3542 return;
2293 3543
2294 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3544 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2295 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3545 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2296 3546
2297 EV_FREQUENT_CHECK; 3547 EV_FREQUENT_CHECK;
2298 3548
2299 ev_start (EV_A_ (W)w, 1); 3549 ev_start (EV_A_ (W)w, 1);
2300 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3550 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2301 wlist_add (&anfds[fd].head, (WL)w); 3551 wlist_add (&anfds[fd].head, (WL)w);
2302 3552
3553 /* common bug, apparently */
3554 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3555
2303 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3556 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2304 w->events &= ~EV__IOFDSET; 3557 w->events &= ~EV__IOFDSET;
2305 3558
2306 EV_FREQUENT_CHECK; 3559 EV_FREQUENT_CHECK;
2307} 3560}
2308 3561
2309void noinline 3562void noinline
2310ev_io_stop (EV_P_ ev_io *w) 3563ev_io_stop (EV_P_ ev_io *w) EV_THROW
2311{ 3564{
2312 clear_pending (EV_A_ (W)w); 3565 clear_pending (EV_A_ (W)w);
2313 if (expect_false (!ev_is_active (w))) 3566 if (expect_false (!ev_is_active (w)))
2314 return; 3567 return;
2315 3568
… …
2318 EV_FREQUENT_CHECK; 3571 EV_FREQUENT_CHECK;
2319 3572
2320 wlist_del (&anfds[w->fd].head, (WL)w); 3573 wlist_del (&anfds[w->fd].head, (WL)w);
2321 ev_stop (EV_A_ (W)w); 3574 ev_stop (EV_A_ (W)w);
2322 3575
2323 fd_change (EV_A_ w->fd, 1); 3576 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2324 3577
2325 EV_FREQUENT_CHECK; 3578 EV_FREQUENT_CHECK;
2326} 3579}
2327 3580
2328void noinline 3581void noinline
2329ev_timer_start (EV_P_ ev_timer *w) 3582ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2330{ 3583{
2331 if (expect_false (ev_is_active (w))) 3584 if (expect_false (ev_is_active (w)))
2332 return; 3585 return;
2333 3586
2334 ev_at (w) += mn_now; 3587 ev_at (w) += mn_now;
… …
2348 3601
2349 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3602 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2350} 3603}
2351 3604
2352void noinline 3605void noinline
2353ev_timer_stop (EV_P_ ev_timer *w) 3606ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2354{ 3607{
2355 clear_pending (EV_A_ (W)w); 3608 clear_pending (EV_A_ (W)w);
2356 if (expect_false (!ev_is_active (w))) 3609 if (expect_false (!ev_is_active (w)))
2357 return; 3610 return;
2358 3611
… …
2370 timers [active] = timers [timercnt + HEAP0]; 3623 timers [active] = timers [timercnt + HEAP0];
2371 adjustheap (timers, timercnt, active); 3624 adjustheap (timers, timercnt, active);
2372 } 3625 }
2373 } 3626 }
2374 3627
2375 EV_FREQUENT_CHECK;
2376
2377 ev_at (w) -= mn_now; 3628 ev_at (w) -= mn_now;
2378 3629
2379 ev_stop (EV_A_ (W)w); 3630 ev_stop (EV_A_ (W)w);
3631
3632 EV_FREQUENT_CHECK;
2380} 3633}
2381 3634
2382void noinline 3635void noinline
2383ev_timer_again (EV_P_ ev_timer *w) 3636ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2384{ 3637{
2385 EV_FREQUENT_CHECK; 3638 EV_FREQUENT_CHECK;
3639
3640 clear_pending (EV_A_ (W)w);
2386 3641
2387 if (ev_is_active (w)) 3642 if (ev_is_active (w))
2388 { 3643 {
2389 if (w->repeat) 3644 if (w->repeat)
2390 { 3645 {
… …
2402 } 3657 }
2403 3658
2404 EV_FREQUENT_CHECK; 3659 EV_FREQUENT_CHECK;
2405} 3660}
2406 3661
3662ev_tstamp
3663ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3664{
3665 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3666}
3667
2407#if EV_PERIODIC_ENABLE 3668#if EV_PERIODIC_ENABLE
2408void noinline 3669void noinline
2409ev_periodic_start (EV_P_ ev_periodic *w) 3670ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2410{ 3671{
2411 if (expect_false (ev_is_active (w))) 3672 if (expect_false (ev_is_active (w)))
2412 return; 3673 return;
2413 3674
2414 if (w->reschedule_cb) 3675 if (w->reschedule_cb)
2415 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3676 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2416 else if (w->interval) 3677 else if (w->interval)
2417 { 3678 {
2418 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3679 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2419 /* this formula differs from the one in periodic_reify because we do not always round up */ 3680 periodic_recalc (EV_A_ w);
2420 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2421 } 3681 }
2422 else 3682 else
2423 ev_at (w) = w->offset; 3683 ev_at (w) = w->offset;
2424 3684
2425 EV_FREQUENT_CHECK; 3685 EV_FREQUENT_CHECK;
… …
2435 3695
2436 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3696 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2437} 3697}
2438 3698
2439void noinline 3699void noinline
2440ev_periodic_stop (EV_P_ ev_periodic *w) 3700ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2441{ 3701{
2442 clear_pending (EV_A_ (W)w); 3702 clear_pending (EV_A_ (W)w);
2443 if (expect_false (!ev_is_active (w))) 3703 if (expect_false (!ev_is_active (w)))
2444 return; 3704 return;
2445 3705
… …
2457 periodics [active] = periodics [periodiccnt + HEAP0]; 3717 periodics [active] = periodics [periodiccnt + HEAP0];
2458 adjustheap (periodics, periodiccnt, active); 3718 adjustheap (periodics, periodiccnt, active);
2459 } 3719 }
2460 } 3720 }
2461 3721
2462 EV_FREQUENT_CHECK;
2463
2464 ev_stop (EV_A_ (W)w); 3722 ev_stop (EV_A_ (W)w);
3723
3724 EV_FREQUENT_CHECK;
2465} 3725}
2466 3726
2467void noinline 3727void noinline
2468ev_periodic_again (EV_P_ ev_periodic *w) 3728ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2469{ 3729{
2470 /* TODO: use adjustheap and recalculation */ 3730 /* TODO: use adjustheap and recalculation */
2471 ev_periodic_stop (EV_A_ w); 3731 ev_periodic_stop (EV_A_ w);
2472 ev_periodic_start (EV_A_ w); 3732 ev_periodic_start (EV_A_ w);
2473} 3733}
… …
2475 3735
2476#ifndef SA_RESTART 3736#ifndef SA_RESTART
2477# define SA_RESTART 0 3737# define SA_RESTART 0
2478#endif 3738#endif
2479 3739
3740#if EV_SIGNAL_ENABLE
3741
2480void noinline 3742void noinline
2481ev_signal_start (EV_P_ ev_signal *w) 3743ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2482{ 3744{
2483#if EV_MULTIPLICITY
2484 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2485#endif
2486 if (expect_false (ev_is_active (w))) 3745 if (expect_false (ev_is_active (w)))
2487 return; 3746 return;
2488 3747
2489 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3748 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2490 3749
2491 evpipe_init (EV_A); 3750#if EV_MULTIPLICITY
3751 assert (("libev: a signal must not be attached to two different loops",
3752 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2492 3753
2493 EV_FREQUENT_CHECK; 3754 signals [w->signum - 1].loop = EV_A;
3755 ECB_MEMORY_FENCE_RELEASE;
3756#endif
2494 3757
3758 EV_FREQUENT_CHECK;
3759
3760#if EV_USE_SIGNALFD
3761 if (sigfd == -2)
2495 { 3762 {
2496#ifndef _WIN32 3763 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2497 sigset_t full, prev; 3764 if (sigfd < 0 && errno == EINVAL)
2498 sigfillset (&full); 3765 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2499 sigprocmask (SIG_SETMASK, &full, &prev);
2500#endif
2501 3766
2502 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3767 if (sigfd >= 0)
3768 {
3769 fd_intern (sigfd); /* doing it twice will not hurt */
2503 3770
2504#ifndef _WIN32 3771 sigemptyset (&sigfd_set);
2505 sigprocmask (SIG_SETMASK, &prev, 0); 3772
2506#endif 3773 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3774 ev_set_priority (&sigfd_w, EV_MAXPRI);
3775 ev_io_start (EV_A_ &sigfd_w);
3776 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3777 }
2507 } 3778 }
3779
3780 if (sigfd >= 0)
3781 {
3782 /* TODO: check .head */
3783 sigaddset (&sigfd_set, w->signum);
3784 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3785
3786 signalfd (sigfd, &sigfd_set, 0);
3787 }
3788#endif
2508 3789
2509 ev_start (EV_A_ (W)w, 1); 3790 ev_start (EV_A_ (W)w, 1);
2510 wlist_add (&signals [w->signum - 1].head, (WL)w); 3791 wlist_add (&signals [w->signum - 1].head, (WL)w);
2511 3792
2512 if (!((WL)w)->next) 3793 if (!((WL)w)->next)
3794# if EV_USE_SIGNALFD
3795 if (sigfd < 0) /*TODO*/
3796# endif
2513 { 3797 {
2514#if _WIN32 3798# ifdef _WIN32
3799 evpipe_init (EV_A);
3800
2515 signal (w->signum, ev_sighandler); 3801 signal (w->signum, ev_sighandler);
2516#else 3802# else
2517 struct sigaction sa; 3803 struct sigaction sa;
3804
3805 evpipe_init (EV_A);
3806
2518 sa.sa_handler = ev_sighandler; 3807 sa.sa_handler = ev_sighandler;
2519 sigfillset (&sa.sa_mask); 3808 sigfillset (&sa.sa_mask);
2520 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3809 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2521 sigaction (w->signum, &sa, 0); 3810 sigaction (w->signum, &sa, 0);
3811
3812 if (origflags & EVFLAG_NOSIGMASK)
3813 {
3814 sigemptyset (&sa.sa_mask);
3815 sigaddset (&sa.sa_mask, w->signum);
3816 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3817 }
2522#endif 3818#endif
2523 } 3819 }
2524 3820
2525 EV_FREQUENT_CHECK; 3821 EV_FREQUENT_CHECK;
2526} 3822}
2527 3823
2528void noinline 3824void noinline
2529ev_signal_stop (EV_P_ ev_signal *w) 3825ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2530{ 3826{
2531 clear_pending (EV_A_ (W)w); 3827 clear_pending (EV_A_ (W)w);
2532 if (expect_false (!ev_is_active (w))) 3828 if (expect_false (!ev_is_active (w)))
2533 return; 3829 return;
2534 3830
… …
2536 3832
2537 wlist_del (&signals [w->signum - 1].head, (WL)w); 3833 wlist_del (&signals [w->signum - 1].head, (WL)w);
2538 ev_stop (EV_A_ (W)w); 3834 ev_stop (EV_A_ (W)w);
2539 3835
2540 if (!signals [w->signum - 1].head) 3836 if (!signals [w->signum - 1].head)
3837 {
3838#if EV_MULTIPLICITY
3839 signals [w->signum - 1].loop = 0; /* unattach from signal */
3840#endif
3841#if EV_USE_SIGNALFD
3842 if (sigfd >= 0)
3843 {
3844 sigset_t ss;
3845
3846 sigemptyset (&ss);
3847 sigaddset (&ss, w->signum);
3848 sigdelset (&sigfd_set, w->signum);
3849
3850 signalfd (sigfd, &sigfd_set, 0);
3851 sigprocmask (SIG_UNBLOCK, &ss, 0);
3852 }
3853 else
3854#endif
2541 signal (w->signum, SIG_DFL); 3855 signal (w->signum, SIG_DFL);
3856 }
2542 3857
2543 EV_FREQUENT_CHECK; 3858 EV_FREQUENT_CHECK;
2544} 3859}
3860
3861#endif
3862
3863#if EV_CHILD_ENABLE
2545 3864
2546void 3865void
2547ev_child_start (EV_P_ ev_child *w) 3866ev_child_start (EV_P_ ev_child *w) EV_THROW
2548{ 3867{
2549#if EV_MULTIPLICITY 3868#if EV_MULTIPLICITY
2550 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3869 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2551#endif 3870#endif
2552 if (expect_false (ev_is_active (w))) 3871 if (expect_false (ev_is_active (w)))
2553 return; 3872 return;
2554 3873
2555 EV_FREQUENT_CHECK; 3874 EV_FREQUENT_CHECK;
2556 3875
2557 ev_start (EV_A_ (W)w, 1); 3876 ev_start (EV_A_ (W)w, 1);
2558 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3877 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2559 3878
2560 EV_FREQUENT_CHECK; 3879 EV_FREQUENT_CHECK;
2561} 3880}
2562 3881
2563void 3882void
2564ev_child_stop (EV_P_ ev_child *w) 3883ev_child_stop (EV_P_ ev_child *w) EV_THROW
2565{ 3884{
2566 clear_pending (EV_A_ (W)w); 3885 clear_pending (EV_A_ (W)w);
2567 if (expect_false (!ev_is_active (w))) 3886 if (expect_false (!ev_is_active (w)))
2568 return; 3887 return;
2569 3888
2570 EV_FREQUENT_CHECK; 3889 EV_FREQUENT_CHECK;
2571 3890
2572 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3891 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2573 ev_stop (EV_A_ (W)w); 3892 ev_stop (EV_A_ (W)w);
2574 3893
2575 EV_FREQUENT_CHECK; 3894 EV_FREQUENT_CHECK;
2576} 3895}
3896
3897#endif
2577 3898
2578#if EV_STAT_ENABLE 3899#if EV_STAT_ENABLE
2579 3900
2580# ifdef _WIN32 3901# ifdef _WIN32
2581# undef lstat 3902# undef lstat
… …
2587#define MIN_STAT_INTERVAL 0.1074891 3908#define MIN_STAT_INTERVAL 0.1074891
2588 3909
2589static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3910static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2590 3911
2591#if EV_USE_INOTIFY 3912#if EV_USE_INOTIFY
2592# define EV_INOTIFY_BUFSIZE 8192 3913
3914/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3915# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2593 3916
2594static void noinline 3917static void noinline
2595infy_add (EV_P_ ev_stat *w) 3918infy_add (EV_P_ ev_stat *w)
2596{ 3919{
2597 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); 3920 w->wd = inotify_add_watch (fs_fd, w->path,
3921 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3922 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3923 | IN_DONT_FOLLOW | IN_MASK_ADD);
2598 3924
2599 if (w->wd < 0) 3925 if (w->wd >= 0)
3926 {
3927 struct statfs sfs;
3928
3929 /* now local changes will be tracked by inotify, but remote changes won't */
3930 /* unless the filesystem is known to be local, we therefore still poll */
3931 /* also do poll on <2.6.25, but with normal frequency */
3932
3933 if (!fs_2625)
3934 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3935 else if (!statfs (w->path, &sfs)
3936 && (sfs.f_type == 0x1373 /* devfs */
3937 || sfs.f_type == 0x4006 /* fat */
3938 || sfs.f_type == 0x4d44 /* msdos */
3939 || sfs.f_type == 0xEF53 /* ext2/3 */
3940 || sfs.f_type == 0x72b6 /* jffs2 */
3941 || sfs.f_type == 0x858458f6 /* ramfs */
3942 || sfs.f_type == 0x5346544e /* ntfs */
3943 || sfs.f_type == 0x3153464a /* jfs */
3944 || sfs.f_type == 0x9123683e /* btrfs */
3945 || sfs.f_type == 0x52654973 /* reiser3 */
3946 || sfs.f_type == 0x01021994 /* tmpfs */
3947 || sfs.f_type == 0x58465342 /* xfs */))
3948 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3949 else
3950 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2600 { 3951 }
3952 else
3953 {
3954 /* can't use inotify, continue to stat */
2601 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3955 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2602 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2603 3956
2604 /* monitor some parent directory for speedup hints */ 3957 /* if path is not there, monitor some parent directory for speedup hints */
2605 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3958 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2606 /* but an efficiency issue only */ 3959 /* but an efficiency issue only */
2607 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3960 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2608 { 3961 {
2609 char path [4096]; 3962 char path [4096];
… …
2619 if (!pend || pend == path) 3972 if (!pend || pend == path)
2620 break; 3973 break;
2621 3974
2622 *pend = 0; 3975 *pend = 0;
2623 w->wd = inotify_add_watch (fs_fd, path, mask); 3976 w->wd = inotify_add_watch (fs_fd, path, mask);
2624 } 3977 }
2625 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3978 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2626 } 3979 }
2627 } 3980 }
2628 3981
2629 if (w->wd >= 0) 3982 if (w->wd >= 0)
2630 {
2631 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3983 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2632 3984
2633 /* now local changes will be tracked by inotify, but remote changes won't */ 3985 /* now re-arm timer, if required */
2634 /* unless the filesystem it known to be local, we therefore still poll */ 3986 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2635 /* also do poll on <2.6.25, but with normal frequency */
2636 struct statfs sfs;
2637
2638 if (fs_2625 && !statfs (w->path, &sfs))
2639 if (sfs.f_type == 0x1373 /* devfs */
2640 || sfs.f_type == 0xEF53 /* ext2/3 */
2641 || sfs.f_type == 0x3153464a /* jfs */
2642 || sfs.f_type == 0x52654973 /* reiser3 */
2643 || sfs.f_type == 0x01021994 /* tempfs */
2644 || sfs.f_type == 0x58465342 /* xfs */)
2645 return;
2646
2647 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2648 ev_timer_again (EV_A_ &w->timer); 3987 ev_timer_again (EV_A_ &w->timer);
2649 } 3988 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2650} 3989}
2651 3990
2652static void noinline 3991static void noinline
2653infy_del (EV_P_ ev_stat *w) 3992infy_del (EV_P_ ev_stat *w)
2654{ 3993{
… …
2657 3996
2658 if (wd < 0) 3997 if (wd < 0)
2659 return; 3998 return;
2660 3999
2661 w->wd = -2; 4000 w->wd = -2;
2662 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4001 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2663 wlist_del (&fs_hash [slot].head, (WL)w); 4002 wlist_del (&fs_hash [slot].head, (WL)w);
2664 4003
2665 /* remove this watcher, if others are watching it, they will rearm */ 4004 /* remove this watcher, if others are watching it, they will rearm */
2666 inotify_rm_watch (fs_fd, wd); 4005 inotify_rm_watch (fs_fd, wd);
2667} 4006}
… …
2669static void noinline 4008static void noinline
2670infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4009infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2671{ 4010{
2672 if (slot < 0) 4011 if (slot < 0)
2673 /* overflow, need to check for all hash slots */ 4012 /* overflow, need to check for all hash slots */
2674 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4013 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2675 infy_wd (EV_A_ slot, wd, ev); 4014 infy_wd (EV_A_ slot, wd, ev);
2676 else 4015 else
2677 { 4016 {
2678 WL w_; 4017 WL w_;
2679 4018
2680 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4019 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2681 { 4020 {
2682 ev_stat *w = (ev_stat *)w_; 4021 ev_stat *w = (ev_stat *)w_;
2683 w_ = w_->next; /* lets us remove this watcher and all before it */ 4022 w_ = w_->next; /* lets us remove this watcher and all before it */
2684 4023
2685 if (w->wd == wd || wd == -1) 4024 if (w->wd == wd || wd == -1)
2686 { 4025 {
2687 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4026 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2688 { 4027 {
2689 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4028 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2690 w->wd = -1; 4029 w->wd = -1;
2691 infy_add (EV_A_ w); /* re-add, no matter what */ 4030 infy_add (EV_A_ w); /* re-add, no matter what */
2692 } 4031 }
2693 4032
2694 stat_timer_cb (EV_A_ &w->timer, 0); 4033 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2699 4038
2700static void 4039static void
2701infy_cb (EV_P_ ev_io *w, int revents) 4040infy_cb (EV_P_ ev_io *w, int revents)
2702{ 4041{
2703 char buf [EV_INOTIFY_BUFSIZE]; 4042 char buf [EV_INOTIFY_BUFSIZE];
2704 struct inotify_event *ev = (struct inotify_event *)buf;
2705 int ofs; 4043 int ofs;
2706 int len = read (fs_fd, buf, sizeof (buf)); 4044 int len = read (fs_fd, buf, sizeof (buf));
2707 4045
2708 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4046 for (ofs = 0; ofs < len; )
4047 {
4048 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2709 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4049 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4050 ofs += sizeof (struct inotify_event) + ev->len;
4051 }
2710} 4052}
2711 4053
2712inline_size void 4054inline_size void ecb_cold
2713check_2625 (EV_P) 4055ev_check_2625 (EV_P)
2714{ 4056{
2715 /* kernels < 2.6.25 are borked 4057 /* kernels < 2.6.25 are borked
2716 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4058 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2717 */ 4059 */
2718 struct utsname buf; 4060 if (ev_linux_version () < 0x020619)
2719 int major, minor, micro;
2720
2721 if (uname (&buf))
2722 return; 4061 return;
2723 4062
2724 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2725 return;
2726
2727 if (major < 2
2728 || (major == 2 && minor < 6)
2729 || (major == 2 && minor == 6 && micro < 25))
2730 return;
2731
2732 fs_2625 = 1; 4063 fs_2625 = 1;
4064}
4065
4066inline_size int
4067infy_newfd (void)
4068{
4069#if defined IN_CLOEXEC && defined IN_NONBLOCK
4070 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4071 if (fd >= 0)
4072 return fd;
4073#endif
4074 return inotify_init ();
2733} 4075}
2734 4076
2735inline_size void 4077inline_size void
2736infy_init (EV_P) 4078infy_init (EV_P)
2737{ 4079{
2738 if (fs_fd != -2) 4080 if (fs_fd != -2)
2739 return; 4081 return;
2740 4082
2741 fs_fd = -1; 4083 fs_fd = -1;
2742 4084
2743 check_2625 (EV_A); 4085 ev_check_2625 (EV_A);
2744 4086
2745 fs_fd = inotify_init (); 4087 fs_fd = infy_newfd ();
2746 4088
2747 if (fs_fd >= 0) 4089 if (fs_fd >= 0)
2748 { 4090 {
4091 fd_intern (fs_fd);
2749 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4092 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2750 ev_set_priority (&fs_w, EV_MAXPRI); 4093 ev_set_priority (&fs_w, EV_MAXPRI);
2751 ev_io_start (EV_A_ &fs_w); 4094 ev_io_start (EV_A_ &fs_w);
4095 ev_unref (EV_A);
2752 } 4096 }
2753} 4097}
2754 4098
2755inline_size void 4099inline_size void
2756infy_fork (EV_P) 4100infy_fork (EV_P)
… …
2758 int slot; 4102 int slot;
2759 4103
2760 if (fs_fd < 0) 4104 if (fs_fd < 0)
2761 return; 4105 return;
2762 4106
4107 ev_ref (EV_A);
4108 ev_io_stop (EV_A_ &fs_w);
2763 close (fs_fd); 4109 close (fs_fd);
2764 fs_fd = inotify_init (); 4110 fs_fd = infy_newfd ();
2765 4111
4112 if (fs_fd >= 0)
4113 {
4114 fd_intern (fs_fd);
4115 ev_io_set (&fs_w, fs_fd, EV_READ);
4116 ev_io_start (EV_A_ &fs_w);
4117 ev_unref (EV_A);
4118 }
4119
2766 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4120 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2767 { 4121 {
2768 WL w_ = fs_hash [slot].head; 4122 WL w_ = fs_hash [slot].head;
2769 fs_hash [slot].head = 0; 4123 fs_hash [slot].head = 0;
2770 4124
2771 while (w_) 4125 while (w_)
… …
2776 w->wd = -1; 4130 w->wd = -1;
2777 4131
2778 if (fs_fd >= 0) 4132 if (fs_fd >= 0)
2779 infy_add (EV_A_ w); /* re-add, no matter what */ 4133 infy_add (EV_A_ w); /* re-add, no matter what */
2780 else 4134 else
4135 {
4136 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4137 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2781 ev_timer_again (EV_A_ &w->timer); 4138 ev_timer_again (EV_A_ &w->timer);
4139 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4140 }
2782 } 4141 }
2783 } 4142 }
2784} 4143}
2785 4144
2786#endif 4145#endif
… …
2790#else 4149#else
2791# define EV_LSTAT(p,b) lstat (p, b) 4150# define EV_LSTAT(p,b) lstat (p, b)
2792#endif 4151#endif
2793 4152
2794void 4153void
2795ev_stat_stat (EV_P_ ev_stat *w) 4154ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2796{ 4155{
2797 if (lstat (w->path, &w->attr) < 0) 4156 if (lstat (w->path, &w->attr) < 0)
2798 w->attr.st_nlink = 0; 4157 w->attr.st_nlink = 0;
2799 else if (!w->attr.st_nlink) 4158 else if (!w->attr.st_nlink)
2800 w->attr.st_nlink = 1; 4159 w->attr.st_nlink = 1;
… …
2803static void noinline 4162static void noinline
2804stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4163stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2805{ 4164{
2806 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4165 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2807 4166
2808 /* we copy this here each the time so that */ 4167 ev_statdata prev = w->attr;
2809 /* prev has the old value when the callback gets invoked */
2810 w->prev = w->attr;
2811 ev_stat_stat (EV_A_ w); 4168 ev_stat_stat (EV_A_ w);
2812 4169
2813 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4170 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2814 if ( 4171 if (
2815 w->prev.st_dev != w->attr.st_dev 4172 prev.st_dev != w->attr.st_dev
2816 || w->prev.st_ino != w->attr.st_ino 4173 || prev.st_ino != w->attr.st_ino
2817 || w->prev.st_mode != w->attr.st_mode 4174 || prev.st_mode != w->attr.st_mode
2818 || w->prev.st_nlink != w->attr.st_nlink 4175 || prev.st_nlink != w->attr.st_nlink
2819 || w->prev.st_uid != w->attr.st_uid 4176 || prev.st_uid != w->attr.st_uid
2820 || w->prev.st_gid != w->attr.st_gid 4177 || prev.st_gid != w->attr.st_gid
2821 || w->prev.st_rdev != w->attr.st_rdev 4178 || prev.st_rdev != w->attr.st_rdev
2822 || w->prev.st_size != w->attr.st_size 4179 || prev.st_size != w->attr.st_size
2823 || w->prev.st_atime != w->attr.st_atime 4180 || prev.st_atime != w->attr.st_atime
2824 || w->prev.st_mtime != w->attr.st_mtime 4181 || prev.st_mtime != w->attr.st_mtime
2825 || w->prev.st_ctime != w->attr.st_ctime 4182 || prev.st_ctime != w->attr.st_ctime
2826 ) { 4183 ) {
4184 /* we only update w->prev on actual differences */
4185 /* in case we test more often than invoke the callback, */
4186 /* to ensure that prev is always different to attr */
4187 w->prev = prev;
4188
2827 #if EV_USE_INOTIFY 4189 #if EV_USE_INOTIFY
2828 if (fs_fd >= 0) 4190 if (fs_fd >= 0)
2829 { 4191 {
2830 infy_del (EV_A_ w); 4192 infy_del (EV_A_ w);
2831 infy_add (EV_A_ w); 4193 infy_add (EV_A_ w);
… …
2836 ev_feed_event (EV_A_ w, EV_STAT); 4198 ev_feed_event (EV_A_ w, EV_STAT);
2837 } 4199 }
2838} 4200}
2839 4201
2840void 4202void
2841ev_stat_start (EV_P_ ev_stat *w) 4203ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2842{ 4204{
2843 if (expect_false (ev_is_active (w))) 4205 if (expect_false (ev_is_active (w)))
2844 return; 4206 return;
2845 4207
2846 ev_stat_stat (EV_A_ w); 4208 ev_stat_stat (EV_A_ w);
… …
2856 4218
2857 if (fs_fd >= 0) 4219 if (fs_fd >= 0)
2858 infy_add (EV_A_ w); 4220 infy_add (EV_A_ w);
2859 else 4221 else
2860#endif 4222#endif
4223 {
2861 ev_timer_again (EV_A_ &w->timer); 4224 ev_timer_again (EV_A_ &w->timer);
4225 ev_unref (EV_A);
4226 }
2862 4227
2863 ev_start (EV_A_ (W)w, 1); 4228 ev_start (EV_A_ (W)w, 1);
2864 4229
2865 EV_FREQUENT_CHECK; 4230 EV_FREQUENT_CHECK;
2866} 4231}
2867 4232
2868void 4233void
2869ev_stat_stop (EV_P_ ev_stat *w) 4234ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2870{ 4235{
2871 clear_pending (EV_A_ (W)w); 4236 clear_pending (EV_A_ (W)w);
2872 if (expect_false (!ev_is_active (w))) 4237 if (expect_false (!ev_is_active (w)))
2873 return; 4238 return;
2874 4239
2875 EV_FREQUENT_CHECK; 4240 EV_FREQUENT_CHECK;
2876 4241
2877#if EV_USE_INOTIFY 4242#if EV_USE_INOTIFY
2878 infy_del (EV_A_ w); 4243 infy_del (EV_A_ w);
2879#endif 4244#endif
4245
4246 if (ev_is_active (&w->timer))
4247 {
4248 ev_ref (EV_A);
2880 ev_timer_stop (EV_A_ &w->timer); 4249 ev_timer_stop (EV_A_ &w->timer);
4250 }
2881 4251
2882 ev_stop (EV_A_ (W)w); 4252 ev_stop (EV_A_ (W)w);
2883 4253
2884 EV_FREQUENT_CHECK; 4254 EV_FREQUENT_CHECK;
2885} 4255}
2886#endif 4256#endif
2887 4257
2888#if EV_IDLE_ENABLE 4258#if EV_IDLE_ENABLE
2889void 4259void
2890ev_idle_start (EV_P_ ev_idle *w) 4260ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2891{ 4261{
2892 if (expect_false (ev_is_active (w))) 4262 if (expect_false (ev_is_active (w)))
2893 return; 4263 return;
2894 4264
2895 pri_adjust (EV_A_ (W)w); 4265 pri_adjust (EV_A_ (W)w);
… …
2908 4278
2909 EV_FREQUENT_CHECK; 4279 EV_FREQUENT_CHECK;
2910} 4280}
2911 4281
2912void 4282void
2913ev_idle_stop (EV_P_ ev_idle *w) 4283ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2914{ 4284{
2915 clear_pending (EV_A_ (W)w); 4285 clear_pending (EV_A_ (W)w);
2916 if (expect_false (!ev_is_active (w))) 4286 if (expect_false (!ev_is_active (w)))
2917 return; 4287 return;
2918 4288
… …
2930 4300
2931 EV_FREQUENT_CHECK; 4301 EV_FREQUENT_CHECK;
2932} 4302}
2933#endif 4303#endif
2934 4304
4305#if EV_PREPARE_ENABLE
2935void 4306void
2936ev_prepare_start (EV_P_ ev_prepare *w) 4307ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2937{ 4308{
2938 if (expect_false (ev_is_active (w))) 4309 if (expect_false (ev_is_active (w)))
2939 return; 4310 return;
2940 4311
2941 EV_FREQUENT_CHECK; 4312 EV_FREQUENT_CHECK;
… …
2946 4317
2947 EV_FREQUENT_CHECK; 4318 EV_FREQUENT_CHECK;
2948} 4319}
2949 4320
2950void 4321void
2951ev_prepare_stop (EV_P_ ev_prepare *w) 4322ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2952{ 4323{
2953 clear_pending (EV_A_ (W)w); 4324 clear_pending (EV_A_ (W)w);
2954 if (expect_false (!ev_is_active (w))) 4325 if (expect_false (!ev_is_active (w)))
2955 return; 4326 return;
2956 4327
… …
2965 4336
2966 ev_stop (EV_A_ (W)w); 4337 ev_stop (EV_A_ (W)w);
2967 4338
2968 EV_FREQUENT_CHECK; 4339 EV_FREQUENT_CHECK;
2969} 4340}
4341#endif
2970 4342
4343#if EV_CHECK_ENABLE
2971void 4344void
2972ev_check_start (EV_P_ ev_check *w) 4345ev_check_start (EV_P_ ev_check *w) EV_THROW
2973{ 4346{
2974 if (expect_false (ev_is_active (w))) 4347 if (expect_false (ev_is_active (w)))
2975 return; 4348 return;
2976 4349
2977 EV_FREQUENT_CHECK; 4350 EV_FREQUENT_CHECK;
… …
2982 4355
2983 EV_FREQUENT_CHECK; 4356 EV_FREQUENT_CHECK;
2984} 4357}
2985 4358
2986void 4359void
2987ev_check_stop (EV_P_ ev_check *w) 4360ev_check_stop (EV_P_ ev_check *w) EV_THROW
2988{ 4361{
2989 clear_pending (EV_A_ (W)w); 4362 clear_pending (EV_A_ (W)w);
2990 if (expect_false (!ev_is_active (w))) 4363 if (expect_false (!ev_is_active (w)))
2991 return; 4364 return;
2992 4365
… …
3001 4374
3002 ev_stop (EV_A_ (W)w); 4375 ev_stop (EV_A_ (W)w);
3003 4376
3004 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
3005} 4378}
4379#endif
3006 4380
3007#if EV_EMBED_ENABLE 4381#if EV_EMBED_ENABLE
3008void noinline 4382void noinline
3009ev_embed_sweep (EV_P_ ev_embed *w) 4383ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3010{ 4384{
3011 ev_loop (w->other, EVLOOP_NONBLOCK); 4385 ev_run (w->other, EVRUN_NOWAIT);
3012} 4386}
3013 4387
3014static void 4388static void
3015embed_io_cb (EV_P_ ev_io *io, int revents) 4389embed_io_cb (EV_P_ ev_io *io, int revents)
3016{ 4390{
3017 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4391 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3018 4392
3019 if (ev_cb (w)) 4393 if (ev_cb (w))
3020 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4394 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3021 else 4395 else
3022 ev_loop (w->other, EVLOOP_NONBLOCK); 4396 ev_run (w->other, EVRUN_NOWAIT);
3023} 4397}
3024 4398
3025static void 4399static void
3026embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4400embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3027{ 4401{
3028 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4402 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3029 4403
3030 { 4404 {
3031 struct ev_loop *loop = w->other; 4405 EV_P = w->other;
3032 4406
3033 while (fdchangecnt) 4407 while (fdchangecnt)
3034 { 4408 {
3035 fd_reify (EV_A); 4409 fd_reify (EV_A);
3036 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4410 ev_run (EV_A_ EVRUN_NOWAIT);
3037 } 4411 }
3038 } 4412 }
3039} 4413}
3040 4414
3041static void 4415static void
… …
3044 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4418 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3045 4419
3046 ev_embed_stop (EV_A_ w); 4420 ev_embed_stop (EV_A_ w);
3047 4421
3048 { 4422 {
3049 struct ev_loop *loop = w->other; 4423 EV_P = w->other;
3050 4424
3051 ev_loop_fork (EV_A); 4425 ev_loop_fork (EV_A);
3052 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4426 ev_run (EV_A_ EVRUN_NOWAIT);
3053 } 4427 }
3054 4428
3055 ev_embed_start (EV_A_ w); 4429 ev_embed_start (EV_A_ w);
3056} 4430}
3057 4431
… …
3062 ev_idle_stop (EV_A_ idle); 4436 ev_idle_stop (EV_A_ idle);
3063} 4437}
3064#endif 4438#endif
3065 4439
3066void 4440void
3067ev_embed_start (EV_P_ ev_embed *w) 4441ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3068{ 4442{
3069 if (expect_false (ev_is_active (w))) 4443 if (expect_false (ev_is_active (w)))
3070 return; 4444 return;
3071 4445
3072 { 4446 {
3073 struct ev_loop *loop = w->other; 4447 EV_P = w->other;
3074 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4448 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3075 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4449 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3076 } 4450 }
3077 4451
3078 EV_FREQUENT_CHECK; 4452 EV_FREQUENT_CHECK;
… …
3093 4467
3094 EV_FREQUENT_CHECK; 4468 EV_FREQUENT_CHECK;
3095} 4469}
3096 4470
3097void 4471void
3098ev_embed_stop (EV_P_ ev_embed *w) 4472ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3099{ 4473{
3100 clear_pending (EV_A_ (W)w); 4474 clear_pending (EV_A_ (W)w);
3101 if (expect_false (!ev_is_active (w))) 4475 if (expect_false (!ev_is_active (w)))
3102 return; 4476 return;
3103 4477
… …
3105 4479
3106 ev_io_stop (EV_A_ &w->io); 4480 ev_io_stop (EV_A_ &w->io);
3107 ev_prepare_stop (EV_A_ &w->prepare); 4481 ev_prepare_stop (EV_A_ &w->prepare);
3108 ev_fork_stop (EV_A_ &w->fork); 4482 ev_fork_stop (EV_A_ &w->fork);
3109 4483
4484 ev_stop (EV_A_ (W)w);
4485
3110 EV_FREQUENT_CHECK; 4486 EV_FREQUENT_CHECK;
3111} 4487}
3112#endif 4488#endif
3113 4489
3114#if EV_FORK_ENABLE 4490#if EV_FORK_ENABLE
3115void 4491void
3116ev_fork_start (EV_P_ ev_fork *w) 4492ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3117{ 4493{
3118 if (expect_false (ev_is_active (w))) 4494 if (expect_false (ev_is_active (w)))
3119 return; 4495 return;
3120 4496
3121 EV_FREQUENT_CHECK; 4497 EV_FREQUENT_CHECK;
… …
3126 4502
3127 EV_FREQUENT_CHECK; 4503 EV_FREQUENT_CHECK;
3128} 4504}
3129 4505
3130void 4506void
3131ev_fork_stop (EV_P_ ev_fork *w) 4507ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3132{ 4508{
3133 clear_pending (EV_A_ (W)w); 4509 clear_pending (EV_A_ (W)w);
3134 if (expect_false (!ev_is_active (w))) 4510 if (expect_false (!ev_is_active (w)))
3135 return; 4511 return;
3136 4512
… …
3147 4523
3148 EV_FREQUENT_CHECK; 4524 EV_FREQUENT_CHECK;
3149} 4525}
3150#endif 4526#endif
3151 4527
4528#if EV_CLEANUP_ENABLE
4529void
4530ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4531{
4532 if (expect_false (ev_is_active (w)))
4533 return;
4534
4535 EV_FREQUENT_CHECK;
4536
4537 ev_start (EV_A_ (W)w, ++cleanupcnt);
4538 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4539 cleanups [cleanupcnt - 1] = w;
4540
4541 /* cleanup watchers should never keep a refcount on the loop */
4542 ev_unref (EV_A);
4543 EV_FREQUENT_CHECK;
4544}
4545
4546void
4547ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4548{
4549 clear_pending (EV_A_ (W)w);
4550 if (expect_false (!ev_is_active (w)))
4551 return;
4552
4553 EV_FREQUENT_CHECK;
4554 ev_ref (EV_A);
4555
4556 {
4557 int active = ev_active (w);
4558
4559 cleanups [active - 1] = cleanups [--cleanupcnt];
4560 ev_active (cleanups [active - 1]) = active;
4561 }
4562
4563 ev_stop (EV_A_ (W)w);
4564
4565 EV_FREQUENT_CHECK;
4566}
4567#endif
4568
3152#if EV_ASYNC_ENABLE 4569#if EV_ASYNC_ENABLE
3153void 4570void
3154ev_async_start (EV_P_ ev_async *w) 4571ev_async_start (EV_P_ ev_async *w) EV_THROW
3155{ 4572{
3156 if (expect_false (ev_is_active (w))) 4573 if (expect_false (ev_is_active (w)))
3157 return; 4574 return;
4575
4576 w->sent = 0;
3158 4577
3159 evpipe_init (EV_A); 4578 evpipe_init (EV_A);
3160 4579
3161 EV_FREQUENT_CHECK; 4580 EV_FREQUENT_CHECK;
3162 4581
… …
3166 4585
3167 EV_FREQUENT_CHECK; 4586 EV_FREQUENT_CHECK;
3168} 4587}
3169 4588
3170void 4589void
3171ev_async_stop (EV_P_ ev_async *w) 4590ev_async_stop (EV_P_ ev_async *w) EV_THROW
3172{ 4591{
3173 clear_pending (EV_A_ (W)w); 4592 clear_pending (EV_A_ (W)w);
3174 if (expect_false (!ev_is_active (w))) 4593 if (expect_false (!ev_is_active (w)))
3175 return; 4594 return;
3176 4595
… …
3187 4606
3188 EV_FREQUENT_CHECK; 4607 EV_FREQUENT_CHECK;
3189} 4608}
3190 4609
3191void 4610void
3192ev_async_send (EV_P_ ev_async *w) 4611ev_async_send (EV_P_ ev_async *w) EV_THROW
3193{ 4612{
3194 w->sent = 1; 4613 w->sent = 1;
3195 evpipe_write (EV_A_ &gotasync); 4614 evpipe_write (EV_A_ &async_pending);
3196} 4615}
3197#endif 4616#endif
3198 4617
3199/*****************************************************************************/ 4618/*****************************************************************************/
3200 4619
… …
3234 4653
3235 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4654 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3236} 4655}
3237 4656
3238void 4657void
3239ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4658ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3240{ 4659{
3241 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4660 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3242 4661
3243 if (expect_false (!once)) 4662 if (expect_false (!once))
3244 { 4663 {
3245 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4664 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3246 return; 4665 return;
3247 } 4666 }
3248 4667
3249 once->cb = cb; 4668 once->cb = cb;
3250 once->arg = arg; 4669 once->arg = arg;
… …
3265} 4684}
3266 4685
3267/*****************************************************************************/ 4686/*****************************************************************************/
3268 4687
3269#if EV_WALK_ENABLE 4688#if EV_WALK_ENABLE
3270void 4689void ecb_cold
3271ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4690ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3272{ 4691{
3273 int i, j; 4692 int i, j;
3274 ev_watcher_list *wl, *wn; 4693 ev_watcher_list *wl, *wn;
3275 4694
3276 if (types & (EV_IO | EV_EMBED)) 4695 if (types & (EV_IO | EV_EMBED))
… …
3319 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4738 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3320#endif 4739#endif
3321 4740
3322#if EV_IDLE_ENABLE 4741#if EV_IDLE_ENABLE
3323 if (types & EV_IDLE) 4742 if (types & EV_IDLE)
3324 for (j = NUMPRI; i--; ) 4743 for (j = NUMPRI; j--; )
3325 for (i = idlecnt [j]; i--; ) 4744 for (i = idlecnt [j]; i--; )
3326 cb (EV_A_ EV_IDLE, idles [j][i]); 4745 cb (EV_A_ EV_IDLE, idles [j][i]);
3327#endif 4746#endif
3328 4747
3329#if EV_FORK_ENABLE 4748#if EV_FORK_ENABLE
… …
3337 if (types & EV_ASYNC) 4756 if (types & EV_ASYNC)
3338 for (i = asynccnt; i--; ) 4757 for (i = asynccnt; i--; )
3339 cb (EV_A_ EV_ASYNC, asyncs [i]); 4758 cb (EV_A_ EV_ASYNC, asyncs [i]);
3340#endif 4759#endif
3341 4760
4761#if EV_PREPARE_ENABLE
3342 if (types & EV_PREPARE) 4762 if (types & EV_PREPARE)
3343 for (i = preparecnt; i--; ) 4763 for (i = preparecnt; i--; )
3344#if EV_EMBED_ENABLE 4764# if EV_EMBED_ENABLE
3345 if (ev_cb (prepares [i]) != embed_prepare_cb) 4765 if (ev_cb (prepares [i]) != embed_prepare_cb)
3346#endif 4766# endif
3347 cb (EV_A_ EV_PREPARE, prepares [i]); 4767 cb (EV_A_ EV_PREPARE, prepares [i]);
4768#endif
3348 4769
4770#if EV_CHECK_ENABLE
3349 if (types & EV_CHECK) 4771 if (types & EV_CHECK)
3350 for (i = checkcnt; i--; ) 4772 for (i = checkcnt; i--; )
3351 cb (EV_A_ EV_CHECK, checks [i]); 4773 cb (EV_A_ EV_CHECK, checks [i]);
4774#endif
3352 4775
4776#if EV_SIGNAL_ENABLE
3353 if (types & EV_SIGNAL) 4777 if (types & EV_SIGNAL)
3354 for (i = 0; i < signalmax; ++i) 4778 for (i = 0; i < EV_NSIG - 1; ++i)
3355 for (wl = signals [i].head; wl; ) 4779 for (wl = signals [i].head; wl; )
3356 { 4780 {
3357 wn = wl->next; 4781 wn = wl->next;
3358 cb (EV_A_ EV_SIGNAL, wl); 4782 cb (EV_A_ EV_SIGNAL, wl);
3359 wl = wn; 4783 wl = wn;
3360 } 4784 }
4785#endif
3361 4786
4787#if EV_CHILD_ENABLE
3362 if (types & EV_CHILD) 4788 if (types & EV_CHILD)
3363 for (i = EV_PID_HASHSIZE; i--; ) 4789 for (i = (EV_PID_HASHSIZE); i--; )
3364 for (wl = childs [i]; wl; ) 4790 for (wl = childs [i]; wl; )
3365 { 4791 {
3366 wn = wl->next; 4792 wn = wl->next;
3367 cb (EV_A_ EV_CHILD, wl); 4793 cb (EV_A_ EV_CHILD, wl);
3368 wl = wn; 4794 wl = wn;
3369 } 4795 }
4796#endif
3370/* EV_STAT 0x00001000 /* stat data changed */ 4797/* EV_STAT 0x00001000 /* stat data changed */
3371/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4798/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3372} 4799}
3373#endif 4800#endif
3374 4801
3375#if EV_MULTIPLICITY 4802#if EV_MULTIPLICITY
3376 #include "ev_wrap.h" 4803 #include "ev_wrap.h"
3377#endif 4804#endif
3378 4805
3379#ifdef __cplusplus
3380}
3381#endif
3382

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