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Comparing libev/ev.c (file contents):
Revision 1.291 by root, Mon Jun 29 04:44:18 2009 UTC vs.
Revision 1.463 by root, Thu Jan 16 11:51:05 2014 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) 2007,2008,2009,2010,2011,2012,2013 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 */
182 223
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# define EV_NSIG (8 * sizeof (sigset_t) + 1)
247#endif
248
249#ifndef EV_USE_FLOOR
250# define EV_USE_FLOOR 0
251#endif
252
183#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
185# define EV_USE_CLOCK_SYSCALL 1 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 256# else
187# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
188# endif 258# endif
189#endif 259#endif
190 260
191#ifndef EV_USE_MONOTONIC 261#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 262# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 263# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 264# else
195# define EV_USE_MONOTONIC 0 265# define EV_USE_MONOTONIC 0
196# endif 266# endif
197#endif 267#endif
198 268
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 270# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 271#endif
202 272
203#ifndef EV_USE_NANOSLEEP 273#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 274# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 275# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 276# else
207# define EV_USE_NANOSLEEP 0 277# define EV_USE_NANOSLEEP 0
208# endif 278# endif
209#endif 279#endif
210 280
211#ifndef EV_USE_SELECT 281#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 282# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 283#endif
214 284
215#ifndef EV_USE_POLL 285#ifndef EV_USE_POLL
216# ifdef _WIN32 286# ifdef _WIN32
217# define EV_USE_POLL 0 287# define EV_USE_POLL 0
218# else 288# else
219# define EV_USE_POLL 1 289# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 290# endif
221#endif 291#endif
222 292
223#ifndef EV_USE_EPOLL 293#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 294# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 295# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 296# else
227# define EV_USE_EPOLL 0 297# define EV_USE_EPOLL 0
228# endif 298# endif
229#endif 299#endif
230 300
… …
236# define EV_USE_PORT 0 306# define EV_USE_PORT 0
237#endif 307#endif
238 308
239#ifndef EV_USE_INOTIFY 309#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 310# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 311# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 312# else
243# define EV_USE_INOTIFY 0 313# define EV_USE_INOTIFY 0
244# endif 314# endif
245#endif 315#endif
246 316
247#ifndef EV_PID_HASHSIZE 317#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 318# 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 319#endif
254 320
255#ifndef EV_INOTIFY_HASHSIZE 321#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 322# 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 323#endif
262 324
263#ifndef EV_USE_EVENTFD 325#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 326# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 327# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 328# else
267# define EV_USE_EVENTFD 0 329# define EV_USE_EVENTFD 0
330# endif
331#endif
332
333#ifndef EV_USE_SIGNALFD
334# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
335# define EV_USE_SIGNALFD EV_FEATURE_OS
336# else
337# define EV_USE_SIGNALFD 0
268# endif 338# endif
269#endif 339#endif
270 340
271#if 0 /* debugging */ 341#if 0 /* debugging */
272# define EV_VERIFY 3 342# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 343# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 344# define EV_HEAP_CACHE_AT 1
275#endif 345#endif
276 346
277#ifndef EV_VERIFY 347#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 348# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 349#endif
280 350
281#ifndef EV_USE_4HEAP 351#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 352# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 353#endif
284 354
285#ifndef EV_HEAP_CACHE_AT 355#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 356# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
357#endif
358
359#ifdef ANDROID
360/* supposedly, android doesn't typedef fd_mask */
361# undef EV_USE_SELECT
362# define EV_USE_SELECT 0
363/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
364# undef EV_USE_CLOCK_SYSCALL
365# define EV_USE_CLOCK_SYSCALL 0
366#endif
367
368/* aix's poll.h seems to cause lots of trouble */
369#ifdef _AIX
370/* AIX has a completely broken poll.h header */
371# undef EV_USE_POLL
372# define EV_USE_POLL 0
287#endif 373#endif
288 374
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 375/* 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. */ 376/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 377#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h> 378# include <sys/syscall.h>
293# ifdef SYS_clock_gettime 379# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 380# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC 381# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1 382# define EV_USE_MONOTONIC 1
297# else 383# else
… …
316# undef EV_USE_INOTIFY 402# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 403# define EV_USE_INOTIFY 0
318#endif 404#endif
319 405
320#if !EV_USE_NANOSLEEP 406#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 407/* hp-ux has it in sys/time.h, which we unconditionally include above */
408# if !defined _WIN32 && !defined __hpux
322# include <sys/select.h> 409# include <sys/select.h>
323# endif 410# endif
324#endif 411#endif
325 412
326#if EV_USE_INOTIFY 413#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 414# include <sys/statfs.h>
329# include <sys/inotify.h> 415# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 416/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 417# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 418# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0 419# define EV_USE_INOTIFY 0
334# endif 420# endif
335#endif 421#endif
336 422
337#if EV_SELECT_IS_WINSOCKET
338# include <winsock.h>
339#endif
340
341#if EV_USE_EVENTFD 423#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 424/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h> 425# include <stdint.h>
344# ifdef __cplusplus 426# ifndef EFD_NONBLOCK
345extern "C" { 427# define EFD_NONBLOCK O_NONBLOCK
346# endif 428# endif
347int eventfd (unsigned int initval, int flags); 429# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 430# ifdef O_CLOEXEC
349} 431# define EFD_CLOEXEC O_CLOEXEC
432# else
433# define EFD_CLOEXEC 02000000
434# endif
350# endif 435# endif
436EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
437#endif
438
439#if EV_USE_SIGNALFD
440/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
441# include <stdint.h>
442# ifndef SFD_NONBLOCK
443# define SFD_NONBLOCK O_NONBLOCK
444# endif
445# ifndef SFD_CLOEXEC
446# ifdef O_CLOEXEC
447# define SFD_CLOEXEC O_CLOEXEC
448# else
449# define SFD_CLOEXEC 02000000
450# endif
451# endif
452EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
453
454struct signalfd_siginfo
455{
456 uint32_t ssi_signo;
457 char pad[128 - sizeof (uint32_t)];
458};
351#endif 459#endif
352 460
353/**/ 461/**/
354 462
355#if EV_VERIFY >= 3 463#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 464# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 465#else
358# define EV_FREQUENT_CHECK do { } while (0) 466# define EV_FREQUENT_CHECK do { } while (0)
359#endif 467#endif
360 468
361/* 469/*
362 * This is used to avoid floating point rounding problems. 470 * 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. 471 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 472 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 473#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
474/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
370 475
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 476#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) */ 477#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 */
374 478
479#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
480#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
481
482/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
483/* ECB.H BEGIN */
484/*
485 * libecb - http://software.schmorp.de/pkg/libecb
486 *
487 * Copyright (©) 2009-2013 Marc Alexander Lehmann <libecb@schmorp.de>
488 * Copyright (©) 2011 Emanuele Giaquinta
489 * All rights reserved.
490 *
491 * Redistribution and use in source and binary forms, with or without modifica-
492 * tion, are permitted provided that the following conditions are met:
493 *
494 * 1. Redistributions of source code must retain the above copyright notice,
495 * this list of conditions and the following disclaimer.
496 *
497 * 2. Redistributions in binary form must reproduce the above copyright
498 * notice, this list of conditions and the following disclaimer in the
499 * documentation and/or other materials provided with the distribution.
500 *
501 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
502 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
503 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
504 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
505 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
506 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
507 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
508 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
509 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
510 * OF THE POSSIBILITY OF SUCH DAMAGE.
511 */
512
513#ifndef ECB_H
514#define ECB_H
515
516/* 16 bits major, 16 bits minor */
517#define ECB_VERSION 0x00010003
518
519#ifdef _WIN32
520 typedef signed char int8_t;
521 typedef unsigned char uint8_t;
522 typedef signed short int16_t;
523 typedef unsigned short uint16_t;
524 typedef signed int int32_t;
525 typedef unsigned int uint32_t;
375#if __GNUC__ >= 4 526 #if __GNUC__
376# define expect(expr,value) __builtin_expect ((expr),(value)) 527 typedef signed long long int64_t;
377# define noinline __attribute__ ((noinline)) 528 typedef unsigned long long uint64_t;
529 #else /* _MSC_VER || __BORLANDC__ */
530 typedef signed __int64 int64_t;
531 typedef unsigned __int64 uint64_t;
532 #endif
533 #ifdef _WIN64
534 #define ECB_PTRSIZE 8
535 typedef uint64_t uintptr_t;
536 typedef int64_t intptr_t;
537 #else
538 #define ECB_PTRSIZE 4
539 typedef uint32_t uintptr_t;
540 typedef int32_t intptr_t;
541 #endif
378#else 542#else
379# define expect(expr,value) (expr) 543 #include <inttypes.h>
380# define noinline 544 #if UINTMAX_MAX > 0xffffffffU
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 545 #define ECB_PTRSIZE 8
382# define inline 546 #else
547 #define ECB_PTRSIZE 4
548 #endif
383# endif 549#endif
550
551/* work around x32 idiocy by defining proper macros */
552#if __amd64 || __x86_64 || _M_AMD64 || _M_X64
553 #if _ILP32
554 #define ECB_AMD64_X32 1
555 #else
556 #define ECB_AMD64 1
384#endif 557 #endif
558#endif
385 559
560/* many compilers define _GNUC_ to some versions but then only implement
561 * what their idiot authors think are the "more important" extensions,
562 * causing enormous grief in return for some better fake benchmark numbers.
563 * or so.
564 * we try to detect these and simply assume they are not gcc - if they have
565 * an issue with that they should have done it right in the first place.
566 */
567#ifndef ECB_GCC_VERSION
568 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
569 #define ECB_GCC_VERSION(major,minor) 0
570 #else
571 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
572 #endif
573#endif
574
575#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
576#define ECB_C99 (__STDC_VERSION__ >= 199901L)
577#define ECB_C11 (__STDC_VERSION__ >= 201112L)
578#define ECB_CPP (__cplusplus+0)
579#define ECB_CPP11 (__cplusplus >= 201103L)
580
581#if ECB_CPP
582 #define ECB_EXTERN_C extern "C"
583 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
584 #define ECB_EXTERN_C_END }
585#else
586 #define ECB_EXTERN_C extern
587 #define ECB_EXTERN_C_BEG
588 #define ECB_EXTERN_C_END
589#endif
590
591/*****************************************************************************/
592
593/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
594/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
595
596#if ECB_NO_THREADS
597 #define ECB_NO_SMP 1
598#endif
599
600#if ECB_NO_SMP
601 #define ECB_MEMORY_FENCE do { } while (0)
602#endif
603
604#ifndef ECB_MEMORY_FENCE
605 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
606 #if __i386 || __i386__
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
608 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
610 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
612 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
613 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
614 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
616 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
617 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
618 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
619 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
620 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
622 #elif (__sparc || __sparc__) && !__sparcv8
623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
624 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
625 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
626 #elif defined __s390__ || defined __s390x__
627 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
628 #elif defined __mips__
629 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
630 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
631 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
632 #elif defined __alpha__
633 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
634 #elif defined __hppa__
635 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
636 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
637 #elif defined __ia64__
638 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
639 #elif defined __m68k__
640 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
641 #elif defined __m88k__
642 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
643 #elif defined __sh__
644 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
645 #endif
646 #endif
647#endif
648
649#ifndef ECB_MEMORY_FENCE
650 #if ECB_GCC_VERSION(4,7)
651 /* see comment below (stdatomic.h) about the C11 memory model. */
652 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
653
654 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
655 * without risking compile time errors with other compilers. We *could*
656 * define our own ecb_clang_has_feature, but I just can't be bothered to work
657 * around this shit time and again.
658 * #elif defined __clang && __has_feature (cxx_atomic)
659 * // see comment below (stdatomic.h) about the C11 memory model.
660 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
661 */
662
663 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
664 #define ECB_MEMORY_FENCE __sync_synchronize ()
665 #elif _MSC_VER >= 1500 /* VC++ 2008 */
666 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
667 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
668 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
669 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
670 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
671 #elif _MSC_VER >= 1400 /* VC++ 2005 */
672 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
673 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
674 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
675 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
676 #elif defined _WIN32
677 #include <WinNT.h>
678 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
679 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
680 #include <mbarrier.h>
681 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
682 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
683 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
684 #elif __xlC__
685 #define ECB_MEMORY_FENCE __sync ()
686 #endif
687#endif
688
689#ifndef ECB_MEMORY_FENCE
690 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
691 /* we assume that these memory fences work on all variables/all memory accesses, */
692 /* not just C11 atomics and atomic accesses */
693 #include <stdatomic.h>
694 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
695 /* any fence other than seq_cst, which isn't very efficient for us. */
696 /* Why that is, we don't know - either the C11 memory model is quite useless */
697 /* for most usages, or gcc and clang have a bug */
698 /* I *currently* lean towards the latter, and inefficiently implement */
699 /* all three of ecb's fences as a seq_cst fence */
700 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
701 #endif
702#endif
703
704#ifndef ECB_MEMORY_FENCE
705 #if !ECB_AVOID_PTHREADS
706 /*
707 * if you get undefined symbol references to pthread_mutex_lock,
708 * or failure to find pthread.h, then you should implement
709 * the ECB_MEMORY_FENCE operations for your cpu/compiler
710 * OR provide pthread.h and link against the posix thread library
711 * of your system.
712 */
713 #include <pthread.h>
714 #define ECB_NEEDS_PTHREADS 1
715 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
716
717 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
718 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
719 #endif
720#endif
721
722#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
723 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
724#endif
725
726#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
727 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
728#endif
729
730/*****************************************************************************/
731
732#if __cplusplus
733 #define ecb_inline static inline
734#elif ECB_GCC_VERSION(2,5)
735 #define ecb_inline static __inline__
736#elif ECB_C99
737 #define ecb_inline static inline
738#else
739 #define ecb_inline static
740#endif
741
742#if ECB_GCC_VERSION(3,3)
743 #define ecb_restrict __restrict__
744#elif ECB_C99
745 #define ecb_restrict restrict
746#else
747 #define ecb_restrict
748#endif
749
750typedef int ecb_bool;
751
752#define ECB_CONCAT_(a, b) a ## b
753#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
754#define ECB_STRINGIFY_(a) # a
755#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
756
757#define ecb_function_ ecb_inline
758
759#if ECB_GCC_VERSION(3,1)
760 #define ecb_attribute(attrlist) __attribute__(attrlist)
761 #define ecb_is_constant(expr) __builtin_constant_p (expr)
762 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
763 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
764#else
765 #define ecb_attribute(attrlist)
766 #define ecb_is_constant(expr) 0
767 #define ecb_expect(expr,value) (expr)
768 #define ecb_prefetch(addr,rw,locality)
769#endif
770
771/* no emulation for ecb_decltype */
772#if ECB_GCC_VERSION(4,5)
773 #define ecb_decltype(x) __decltype(x)
774#elif ECB_GCC_VERSION(3,0)
775 #define ecb_decltype(x) __typeof(x)
776#endif
777
778#define ecb_noinline ecb_attribute ((__noinline__))
779#define ecb_unused ecb_attribute ((__unused__))
780#define ecb_const ecb_attribute ((__const__))
781#define ecb_pure ecb_attribute ((__pure__))
782
783#if ECB_C11
784 #define ecb_noreturn _Noreturn
785#else
786 #define ecb_noreturn ecb_attribute ((__noreturn__))
787#endif
788
789#if ECB_GCC_VERSION(4,3)
790 #define ecb_artificial ecb_attribute ((__artificial__))
791 #define ecb_hot ecb_attribute ((__hot__))
792 #define ecb_cold ecb_attribute ((__cold__))
793#else
794 #define ecb_artificial
795 #define ecb_hot
796 #define ecb_cold
797#endif
798
799/* put around conditional expressions if you are very sure that the */
800/* expression is mostly true or mostly false. note that these return */
801/* booleans, not the expression. */
386#define expect_false(expr) expect ((expr) != 0, 0) 802#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 803#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
804/* for compatibility to the rest of the world */
805#define ecb_likely(expr) ecb_expect_true (expr)
806#define ecb_unlikely(expr) ecb_expect_false (expr)
807
808/* count trailing zero bits and count # of one bits */
809#if ECB_GCC_VERSION(3,4)
810 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
811 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
812 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
813 #define ecb_ctz32(x) __builtin_ctz (x)
814 #define ecb_ctz64(x) __builtin_ctzll (x)
815 #define ecb_popcount32(x) __builtin_popcount (x)
816 /* no popcountll */
817#else
818 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
819 ecb_function_ int
820 ecb_ctz32 (uint32_t x)
821 {
822 int r = 0;
823
824 x &= ~x + 1; /* this isolates the lowest bit */
825
826#if ECB_branchless_on_i386
827 r += !!(x & 0xaaaaaaaa) << 0;
828 r += !!(x & 0xcccccccc) << 1;
829 r += !!(x & 0xf0f0f0f0) << 2;
830 r += !!(x & 0xff00ff00) << 3;
831 r += !!(x & 0xffff0000) << 4;
832#else
833 if (x & 0xaaaaaaaa) r += 1;
834 if (x & 0xcccccccc) r += 2;
835 if (x & 0xf0f0f0f0) r += 4;
836 if (x & 0xff00ff00) r += 8;
837 if (x & 0xffff0000) r += 16;
838#endif
839
840 return r;
841 }
842
843 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
844 ecb_function_ int
845 ecb_ctz64 (uint64_t x)
846 {
847 int shift = x & 0xffffffffU ? 0 : 32;
848 return ecb_ctz32 (x >> shift) + shift;
849 }
850
851 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
852 ecb_function_ int
853 ecb_popcount32 (uint32_t x)
854 {
855 x -= (x >> 1) & 0x55555555;
856 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
857 x = ((x >> 4) + x) & 0x0f0f0f0f;
858 x *= 0x01010101;
859
860 return x >> 24;
861 }
862
863 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
864 ecb_function_ int ecb_ld32 (uint32_t x)
865 {
866 int r = 0;
867
868 if (x >> 16) { x >>= 16; r += 16; }
869 if (x >> 8) { x >>= 8; r += 8; }
870 if (x >> 4) { x >>= 4; r += 4; }
871 if (x >> 2) { x >>= 2; r += 2; }
872 if (x >> 1) { r += 1; }
873
874 return r;
875 }
876
877 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
878 ecb_function_ int ecb_ld64 (uint64_t x)
879 {
880 int r = 0;
881
882 if (x >> 32) { x >>= 32; r += 32; }
883
884 return r + ecb_ld32 (x);
885 }
886#endif
887
888ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
889ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
890ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
891ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
892
893ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
894ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
895{
896 return ( (x * 0x0802U & 0x22110U)
897 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
898}
899
900ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
901ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
902{
903 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
904 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
905 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
906 x = ( x >> 8 ) | ( x << 8);
907
908 return x;
909}
910
911ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
912ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
913{
914 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
915 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
916 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
917 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
918 x = ( x >> 16 ) | ( x << 16);
919
920 return x;
921}
922
923/* popcount64 is only available on 64 bit cpus as gcc builtin */
924/* so for this version we are lazy */
925ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
926ecb_function_ int
927ecb_popcount64 (uint64_t x)
928{
929 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
930}
931
932ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
933ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
934ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
935ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
936ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
937ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
938ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
939ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
940
941ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
942ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
943ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
944ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
945ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
946ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
947ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
948ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
949
950#if ECB_GCC_VERSION(4,3)
951 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
952 #define ecb_bswap32(x) __builtin_bswap32 (x)
953 #define ecb_bswap64(x) __builtin_bswap64 (x)
954#else
955 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
956 ecb_function_ uint16_t
957 ecb_bswap16 (uint16_t x)
958 {
959 return ecb_rotl16 (x, 8);
960 }
961
962 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
963 ecb_function_ uint32_t
964 ecb_bswap32 (uint32_t x)
965 {
966 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
967 }
968
969 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
970 ecb_function_ uint64_t
971 ecb_bswap64 (uint64_t x)
972 {
973 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
974 }
975#endif
976
977#if ECB_GCC_VERSION(4,5)
978 #define ecb_unreachable() __builtin_unreachable ()
979#else
980 /* this seems to work fine, but gcc always emits a warning for it :/ */
981 ecb_inline void ecb_unreachable (void) ecb_noreturn;
982 ecb_inline void ecb_unreachable (void) { }
983#endif
984
985/* try to tell the compiler that some condition is definitely true */
986#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
987
988ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
989ecb_inline unsigned char
990ecb_byteorder_helper (void)
991{
992 /* the union code still generates code under pressure in gcc, */
993 /* but less than using pointers, and always seems to */
994 /* successfully return a constant. */
995 /* the reason why we have this horrible preprocessor mess */
996 /* is to avoid it in all cases, at least on common architectures */
997 /* or when using a recent enough gcc version (>= 4.6) */
998#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
999 return 0x44;
1000#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1001 return 0x44;
1002#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1003 return 0x11;
1004#else
1005 union
1006 {
1007 uint32_t i;
1008 uint8_t c;
1009 } u = { 0x11223344 };
1010 return u.c;
1011#endif
1012}
1013
1014ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1015ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1016ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1017ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1018
1019#if ECB_GCC_VERSION(3,0) || ECB_C99
1020 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1021#else
1022 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1023#endif
1024
1025#if __cplusplus
1026 template<typename T>
1027 static inline T ecb_div_rd (T val, T div)
1028 {
1029 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1030 }
1031 template<typename T>
1032 static inline T ecb_div_ru (T val, T div)
1033 {
1034 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1035 }
1036#else
1037 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1038 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1039#endif
1040
1041#if ecb_cplusplus_does_not_suck
1042 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1043 template<typename T, int N>
1044 static inline int ecb_array_length (const T (&arr)[N])
1045 {
1046 return N;
1047 }
1048#else
1049 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1050#endif
1051
1052/*******************************************************************************/
1053/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1054
1055/* basically, everything uses "ieee pure-endian" floating point numbers */
1056/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1057#if 0 \
1058 || __i386 || __i386__ \
1059 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1060 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1061 || defined __arm__ && defined __ARM_EABI__ \
1062 || defined __s390__ || defined __s390x__ \
1063 || defined __mips__ \
1064 || defined __alpha__ \
1065 || defined __hppa__ \
1066 || defined __ia64__ \
1067 || defined __m68k__ \
1068 || defined __m88k__ \
1069 || defined __sh__ \
1070 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1071 #define ECB_STDFP 1
1072 #include <string.h> /* for memcpy */
1073#else
1074 #define ECB_STDFP 0
1075#endif
1076
1077#ifndef ECB_NO_LIBM
1078
1079 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1080
1081 /* only the oldest of old doesn't have this one. solaris. */
1082 #ifdef INFINITY
1083 #define ECB_INFINITY INFINITY
1084 #else
1085 #define ECB_INFINITY HUGE_VAL
1086 #endif
1087
1088 #ifdef NAN
1089 #define ECB_NAN NAN
1090 #else
1091 #define ECB_NAN ECB_INFINITY
1092 #endif
1093
1094 /* converts an ieee half/binary16 to a float */
1095 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1096 ecb_function_ float
1097 ecb_binary16_to_float (uint16_t x)
1098 {
1099 int e = (x >> 10) & 0x1f;
1100 int m = x & 0x3ff;
1101 float r;
1102
1103 if (!e ) r = ldexpf (m , -24);
1104 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1105 else if (m ) r = ECB_NAN;
1106 else r = ECB_INFINITY;
1107
1108 return x & 0x8000 ? -r : r;
1109 }
1110
1111 /* convert a float to ieee single/binary32 */
1112 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1113 ecb_function_ uint32_t
1114 ecb_float_to_binary32 (float x)
1115 {
1116 uint32_t r;
1117
1118 #if ECB_STDFP
1119 memcpy (&r, &x, 4);
1120 #else
1121 /* slow emulation, works for anything but -0 */
1122 uint32_t m;
1123 int e;
1124
1125 if (x == 0e0f ) return 0x00000000U;
1126 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1127 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1128 if (x != x ) return 0x7fbfffffU;
1129
1130 m = frexpf (x, &e) * 0x1000000U;
1131
1132 r = m & 0x80000000U;
1133
1134 if (r)
1135 m = -m;
1136
1137 if (e <= -126)
1138 {
1139 m &= 0xffffffU;
1140 m >>= (-125 - e);
1141 e = -126;
1142 }
1143
1144 r |= (e + 126) << 23;
1145 r |= m & 0x7fffffU;
1146 #endif
1147
1148 return r;
1149 }
1150
1151 /* converts an ieee single/binary32 to a float */
1152 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1153 ecb_function_ float
1154 ecb_binary32_to_float (uint32_t x)
1155 {
1156 float r;
1157
1158 #if ECB_STDFP
1159 memcpy (&r, &x, 4);
1160 #else
1161 /* emulation, only works for normals and subnormals and +0 */
1162 int neg = x >> 31;
1163 int e = (x >> 23) & 0xffU;
1164
1165 x &= 0x7fffffU;
1166
1167 if (e)
1168 x |= 0x800000U;
1169 else
1170 e = 1;
1171
1172 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1173 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1174
1175 r = neg ? -r : r;
1176 #endif
1177
1178 return r;
1179 }
1180
1181 /* convert a double to ieee double/binary64 */
1182 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1183 ecb_function_ uint64_t
1184 ecb_double_to_binary64 (double x)
1185 {
1186 uint64_t r;
1187
1188 #if ECB_STDFP
1189 memcpy (&r, &x, 8);
1190 #else
1191 /* slow emulation, works for anything but -0 */
1192 uint64_t m;
1193 int e;
1194
1195 if (x == 0e0 ) return 0x0000000000000000U;
1196 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1197 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1198 if (x != x ) return 0X7ff7ffffffffffffU;
1199
1200 m = frexp (x, &e) * 0x20000000000000U;
1201
1202 r = m & 0x8000000000000000;;
1203
1204 if (r)
1205 m = -m;
1206
1207 if (e <= -1022)
1208 {
1209 m &= 0x1fffffffffffffU;
1210 m >>= (-1021 - e);
1211 e = -1022;
1212 }
1213
1214 r |= ((uint64_t)(e + 1022)) << 52;
1215 r |= m & 0xfffffffffffffU;
1216 #endif
1217
1218 return r;
1219 }
1220
1221 /* converts an ieee double/binary64 to a double */
1222 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1223 ecb_function_ double
1224 ecb_binary64_to_double (uint64_t x)
1225 {
1226 double r;
1227
1228 #if ECB_STDFP
1229 memcpy (&r, &x, 8);
1230 #else
1231 /* emulation, only works for normals and subnormals and +0 */
1232 int neg = x >> 63;
1233 int e = (x >> 52) & 0x7ffU;
1234
1235 x &= 0xfffffffffffffU;
1236
1237 if (e)
1238 x |= 0x10000000000000U;
1239 else
1240 e = 1;
1241
1242 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1243 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1244
1245 r = neg ? -r : r;
1246 #endif
1247
1248 return r;
1249 }
1250
1251#endif
1252
1253#endif
1254
1255/* ECB.H END */
1256
1257#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1258/* if your architecture doesn't need memory fences, e.g. because it is
1259 * single-cpu/core, or if you use libev in a project that doesn't use libev
1260 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1261 * libev, in which cases the memory fences become nops.
1262 * alternatively, you can remove this #error and link against libpthread,
1263 * which will then provide the memory fences.
1264 */
1265# error "memory fences not defined for your architecture, please report"
1266#endif
1267
1268#ifndef ECB_MEMORY_FENCE
1269# define ECB_MEMORY_FENCE do { } while (0)
1270# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1271# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1272#endif
1273
1274#define expect_false(cond) ecb_expect_false (cond)
1275#define expect_true(cond) ecb_expect_true (cond)
1276#define noinline ecb_noinline
1277
388#define inline_size static inline 1278#define inline_size ecb_inline
389 1279
390#if EV_MINIMAL 1280#if EV_FEATURE_CODE
1281# define inline_speed ecb_inline
1282#else
391# define inline_speed static noinline 1283# define inline_speed static noinline
1284#endif
1285
1286#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1287
1288#if EV_MINPRI == EV_MAXPRI
1289# define ABSPRI(w) (((W)w), 0)
392#else 1290#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) 1291# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1292#endif
398 1293
399#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1294#define EMPTY /* required for microsofts broken pseudo-c compiler */
400#define EMPTY2(a,b) /* used to suppress some warnings */ 1295#define EMPTY2(a,b) /* used to suppress some warnings */
401 1296
402typedef ev_watcher *W; 1297typedef ev_watcher *W;
… …
406#define ev_active(w) ((W)(w))->active 1301#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at 1302#define ev_at(w) ((WT)(w))->at
408 1303
409#if EV_USE_REALTIME 1304#if EV_USE_REALTIME
410/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1305/* 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 */ 1306/* giving it a reasonably high chance of working on typical architectures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1307static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif 1308#endif
414 1309
415#if EV_USE_MONOTONIC 1310#if EV_USE_MONOTONIC
416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1311static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif 1312#endif
418 1313
1314#ifndef EV_FD_TO_WIN32_HANDLE
1315# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1316#endif
1317#ifndef EV_WIN32_HANDLE_TO_FD
1318# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1319#endif
1320#ifndef EV_WIN32_CLOSE_FD
1321# define EV_WIN32_CLOSE_FD(fd) close (fd)
1322#endif
1323
419#ifdef _WIN32 1324#ifdef _WIN32
420# include "ev_win32.c" 1325# include "ev_win32.c"
421#endif 1326#endif
422 1327
423/*****************************************************************************/ 1328/*****************************************************************************/
424 1329
1330/* define a suitable floor function (only used by periodics atm) */
1331
1332#if EV_USE_FLOOR
1333# include <math.h>
1334# define ev_floor(v) floor (v)
1335#else
1336
1337#include <float.h>
1338
1339/* a floor() replacement function, should be independent of ev_tstamp type */
1340static ev_tstamp noinline
1341ev_floor (ev_tstamp v)
1342{
1343 /* the choice of shift factor is not terribly important */
1344#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1345 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1346#else
1347 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1348#endif
1349
1350 /* argument too large for an unsigned long? */
1351 if (expect_false (v >= shift))
1352 {
1353 ev_tstamp f;
1354
1355 if (v == v - 1.)
1356 return v; /* very large number */
1357
1358 f = shift * ev_floor (v * (1. / shift));
1359 return f + ev_floor (v - f);
1360 }
1361
1362 /* special treatment for negative args? */
1363 if (expect_false (v < 0.))
1364 {
1365 ev_tstamp f = -ev_floor (-v);
1366
1367 return f - (f == v ? 0 : 1);
1368 }
1369
1370 /* fits into an unsigned long */
1371 return (unsigned long)v;
1372}
1373
1374#endif
1375
1376/*****************************************************************************/
1377
1378#ifdef __linux
1379# include <sys/utsname.h>
1380#endif
1381
1382static unsigned int noinline ecb_cold
1383ev_linux_version (void)
1384{
1385#ifdef __linux
1386 unsigned int v = 0;
1387 struct utsname buf;
1388 int i;
1389 char *p = buf.release;
1390
1391 if (uname (&buf))
1392 return 0;
1393
1394 for (i = 3+1; --i; )
1395 {
1396 unsigned int c = 0;
1397
1398 for (;;)
1399 {
1400 if (*p >= '0' && *p <= '9')
1401 c = c * 10 + *p++ - '0';
1402 else
1403 {
1404 p += *p == '.';
1405 break;
1406 }
1407 }
1408
1409 v = (v << 8) | c;
1410 }
1411
1412 return v;
1413#else
1414 return 0;
1415#endif
1416}
1417
1418/*****************************************************************************/
1419
1420#if EV_AVOID_STDIO
1421static void noinline ecb_cold
1422ev_printerr (const char *msg)
1423{
1424 write (STDERR_FILENO, msg, strlen (msg));
1425}
1426#endif
1427
425static void (*syserr_cb)(const char *msg); 1428static void (*syserr_cb)(const char *msg) EV_THROW;
426 1429
427void 1430void ecb_cold
428ev_set_syserr_cb (void (*cb)(const char *msg)) 1431ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
429{ 1432{
430 syserr_cb = cb; 1433 syserr_cb = cb;
431} 1434}
432 1435
433static void noinline 1436static void noinline ecb_cold
434ev_syserr (const char *msg) 1437ev_syserr (const char *msg)
435{ 1438{
436 if (!msg) 1439 if (!msg)
437 msg = "(libev) system error"; 1440 msg = "(libev) system error";
438 1441
439 if (syserr_cb) 1442 if (syserr_cb)
440 syserr_cb (msg); 1443 syserr_cb (msg);
441 else 1444 else
442 { 1445 {
1446#if EV_AVOID_STDIO
1447 ev_printerr (msg);
1448 ev_printerr (": ");
1449 ev_printerr (strerror (errno));
1450 ev_printerr ("\n");
1451#else
443 perror (msg); 1452 perror (msg);
1453#endif
444 abort (); 1454 abort ();
445 } 1455 }
446} 1456}
447 1457
448static void * 1458static void *
449ev_realloc_emul (void *ptr, long size) 1459ev_realloc_emul (void *ptr, long size) EV_THROW
450{ 1460{
451 /* some systems, notably openbsd and darwin, fail to properly 1461 /* some systems, notably openbsd and darwin, fail to properly
452 * implement realloc (x, 0) (as required by both ansi c-98 and 1462 * implement realloc (x, 0) (as required by both ansi c-89 and
453 * the single unix specification, so work around them here. 1463 * the single unix specification, so work around them here.
1464 * recently, also (at least) fedora and debian started breaking it,
1465 * despite documenting it otherwise.
454 */ 1466 */
455 1467
456 if (size) 1468 if (size)
457 return realloc (ptr, size); 1469 return realloc (ptr, size);
458 1470
459 free (ptr); 1471 free (ptr);
460 return 0; 1472 return 0;
461} 1473}
462 1474
463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1475static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
464 1476
465void 1477void ecb_cold
466ev_set_allocator (void *(*cb)(void *ptr, long size)) 1478ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
467{ 1479{
468 alloc = cb; 1480 alloc = cb;
469} 1481}
470 1482
471inline_speed void * 1483inline_speed void *
… …
473{ 1485{
474 ptr = alloc (ptr, size); 1486 ptr = alloc (ptr, size);
475 1487
476 if (!ptr && size) 1488 if (!ptr && size)
477 { 1489 {
1490#if EV_AVOID_STDIO
1491 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1492#else
478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1493 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1494#endif
479 abort (); 1495 abort ();
480 } 1496 }
481 1497
482 return ptr; 1498 return ptr;
483} 1499}
… …
485#define ev_malloc(size) ev_realloc (0, (size)) 1501#define ev_malloc(size) ev_realloc (0, (size))
486#define ev_free(ptr) ev_realloc ((ptr), 0) 1502#define ev_free(ptr) ev_realloc ((ptr), 0)
487 1503
488/*****************************************************************************/ 1504/*****************************************************************************/
489 1505
1506/* set in reify when reification needed */
1507#define EV_ANFD_REIFY 1
1508
490/* file descriptor info structure */ 1509/* file descriptor info structure */
491typedef struct 1510typedef struct
492{ 1511{
493 WL head; 1512 WL head;
494 unsigned char events; /* the events watched for */ 1513 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */ 1514 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 */ 1515 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
497 unsigned char unused; 1516 unsigned char unused;
498#if EV_USE_EPOLL 1517#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */ 1518 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif 1519#endif
501#if EV_SELECT_IS_WINSOCKET 1520#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
502 SOCKET handle; 1521 SOCKET handle;
1522#endif
1523#if EV_USE_IOCP
1524 OVERLAPPED or, ow;
503#endif 1525#endif
504} ANFD; 1526} ANFD;
505 1527
506/* stores the pending event set for a given watcher */ 1528/* stores the pending event set for a given watcher */
507typedef struct 1529typedef struct
… …
549 #undef VAR 1571 #undef VAR
550 }; 1572 };
551 #include "ev_wrap.h" 1573 #include "ev_wrap.h"
552 1574
553 static struct ev_loop default_loop_struct; 1575 static struct ev_loop default_loop_struct;
554 struct ev_loop *ev_default_loop_ptr; 1576 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
555 1577
556#else 1578#else
557 1579
558 ev_tstamp ev_rt_now; 1580 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; 1581 #define VAR(name,decl) static decl;
560 #include "ev_vars.h" 1582 #include "ev_vars.h"
561 #undef VAR 1583 #undef VAR
562 1584
563 static int ev_default_loop_ptr; 1585 static int ev_default_loop_ptr;
564 1586
565#endif 1587#endif
566 1588
1589#if EV_FEATURE_API
1590# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1591# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1592# define EV_INVOKE_PENDING invoke_cb (EV_A)
1593#else
1594# define EV_RELEASE_CB (void)0
1595# define EV_ACQUIRE_CB (void)0
1596# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1597#endif
1598
1599#define EVBREAK_RECURSE 0x80
1600
567/*****************************************************************************/ 1601/*****************************************************************************/
568 1602
1603#ifndef EV_HAVE_EV_TIME
569ev_tstamp 1604ev_tstamp
570ev_time (void) 1605ev_time (void) EV_THROW
571{ 1606{
572#if EV_USE_REALTIME 1607#if EV_USE_REALTIME
573 if (expect_true (have_realtime)) 1608 if (expect_true (have_realtime))
574 { 1609 {
575 struct timespec ts; 1610 struct timespec ts;
… …
580 1615
581 struct timeval tv; 1616 struct timeval tv;
582 gettimeofday (&tv, 0); 1617 gettimeofday (&tv, 0);
583 return tv.tv_sec + tv.tv_usec * 1e-6; 1618 return tv.tv_sec + tv.tv_usec * 1e-6;
584} 1619}
1620#endif
585 1621
586inline_size ev_tstamp 1622inline_size ev_tstamp
587get_clock (void) 1623get_clock (void)
588{ 1624{
589#if EV_USE_MONOTONIC 1625#if EV_USE_MONOTONIC
… …
598 return ev_time (); 1634 return ev_time ();
599} 1635}
600 1636
601#if EV_MULTIPLICITY 1637#if EV_MULTIPLICITY
602ev_tstamp 1638ev_tstamp
603ev_now (EV_P) 1639ev_now (EV_P) EV_THROW
604{ 1640{
605 return ev_rt_now; 1641 return ev_rt_now;
606} 1642}
607#endif 1643#endif
608 1644
609void 1645void
610ev_sleep (ev_tstamp delay) 1646ev_sleep (ev_tstamp delay) EV_THROW
611{ 1647{
612 if (delay > 0.) 1648 if (delay > 0.)
613 { 1649 {
614#if EV_USE_NANOSLEEP 1650#if EV_USE_NANOSLEEP
615 struct timespec ts; 1651 struct timespec ts;
616 1652
617 ts.tv_sec = (time_t)delay; 1653 EV_TS_SET (ts, delay);
618 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
619
620 nanosleep (&ts, 0); 1654 nanosleep (&ts, 0);
621#elif defined(_WIN32) 1655#elif defined _WIN32
622 Sleep ((unsigned long)(delay * 1e3)); 1656 Sleep ((unsigned long)(delay * 1e3));
623#else 1657#else
624 struct timeval tv; 1658 struct timeval tv;
625 1659
626 tv.tv_sec = (time_t)delay;
627 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
628
629 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1660 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
630 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1661 /* something not guaranteed by newer posix versions, but guaranteed */
631 /* by older ones */ 1662 /* by older ones */
1663 EV_TV_SET (tv, delay);
632 select (0, 0, 0, 0, &tv); 1664 select (0, 0, 0, 0, &tv);
633#endif 1665#endif
634 } 1666 }
635} 1667}
636 1668
637/*****************************************************************************/ 1669/*****************************************************************************/
638 1670
639#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1671#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
640 1672
641/* find a suitable new size for the given array, */ 1673/* find a suitable new size for the given array, */
642/* hopefully by rounding to a ncie-to-malloc size */ 1674/* hopefully by rounding to a nice-to-malloc size */
643inline_size int 1675inline_size int
644array_nextsize (int elem, int cur, int cnt) 1676array_nextsize (int elem, int cur, int cnt)
645{ 1677{
646 int ncur = cur + 1; 1678 int ncur = cur + 1;
647 1679
648 do 1680 do
649 ncur <<= 1; 1681 ncur <<= 1;
650 while (cnt > ncur); 1682 while (cnt > ncur);
651 1683
652 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1684 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
653 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1685 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
654 { 1686 {
655 ncur *= elem; 1687 ncur *= elem;
656 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1688 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
657 ncur = ncur - sizeof (void *) * 4; 1689 ncur = ncur - sizeof (void *) * 4;
… …
659 } 1691 }
660 1692
661 return ncur; 1693 return ncur;
662} 1694}
663 1695
664static noinline void * 1696static void * noinline ecb_cold
665array_realloc (int elem, void *base, int *cur, int cnt) 1697array_realloc (int elem, void *base, int *cur, int cnt)
666{ 1698{
667 *cur = array_nextsize (elem, *cur, cnt); 1699 *cur = array_nextsize (elem, *cur, cnt);
668 return ev_realloc (base, elem * *cur); 1700 return ev_realloc (base, elem * *cur);
669} 1701}
… …
672 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1704 memset ((void *)(base), 0, sizeof (*(base)) * (count))
673 1705
674#define array_needsize(type,base,cur,cnt,init) \ 1706#define array_needsize(type,base,cur,cnt,init) \
675 if (expect_false ((cnt) > (cur))) \ 1707 if (expect_false ((cnt) > (cur))) \
676 { \ 1708 { \
677 int ocur_ = (cur); \ 1709 int ecb_unused ocur_ = (cur); \
678 (base) = (type *)array_realloc \ 1710 (base) = (type *)array_realloc \
679 (sizeof (type), (base), &(cur), (cnt)); \ 1711 (sizeof (type), (base), &(cur), (cnt)); \
680 init ((base) + (ocur_), (cur) - ocur_); \ 1712 init ((base) + (ocur_), (cur) - ocur_); \
681 } 1713 }
682 1714
… …
700pendingcb (EV_P_ ev_prepare *w, int revents) 1732pendingcb (EV_P_ ev_prepare *w, int revents)
701{ 1733{
702} 1734}
703 1735
704void noinline 1736void noinline
705ev_feed_event (EV_P_ void *w, int revents) 1737ev_feed_event (EV_P_ void *w, int revents) EV_THROW
706{ 1738{
707 W w_ = (W)w; 1739 W w_ = (W)w;
708 int pri = ABSPRI (w_); 1740 int pri = ABSPRI (w_);
709 1741
710 if (expect_false (w_->pending)) 1742 if (expect_false (w_->pending))
… …
714 w_->pending = ++pendingcnt [pri]; 1746 w_->pending = ++pendingcnt [pri];
715 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1747 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
716 pendings [pri][w_->pending - 1].w = w_; 1748 pendings [pri][w_->pending - 1].w = w_;
717 pendings [pri][w_->pending - 1].events = revents; 1749 pendings [pri][w_->pending - 1].events = revents;
718 } 1750 }
1751
1752 pendingpri = NUMPRI - 1;
719} 1753}
720 1754
721inline_speed void 1755inline_speed void
722feed_reverse (EV_P_ W w) 1756feed_reverse (EV_P_ W w)
723{ 1757{
… …
743} 1777}
744 1778
745/*****************************************************************************/ 1779/*****************************************************************************/
746 1780
747inline_speed void 1781inline_speed void
748fd_event (EV_P_ int fd, int revents) 1782fd_event_nocheck (EV_P_ int fd, int revents)
749{ 1783{
750 ANFD *anfd = anfds + fd; 1784 ANFD *anfd = anfds + fd;
751 ev_io *w; 1785 ev_io *w;
752 1786
753 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1787 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
757 if (ev) 1791 if (ev)
758 ev_feed_event (EV_A_ (W)w, ev); 1792 ev_feed_event (EV_A_ (W)w, ev);
759 } 1793 }
760} 1794}
761 1795
1796/* do not submit kernel events for fds that have reify set */
1797/* because that means they changed while we were polling for new events */
1798inline_speed void
1799fd_event (EV_P_ int fd, int revents)
1800{
1801 ANFD *anfd = anfds + fd;
1802
1803 if (expect_true (!anfd->reify))
1804 fd_event_nocheck (EV_A_ fd, revents);
1805}
1806
762void 1807void
763ev_feed_fd_event (EV_P_ int fd, int revents) 1808ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
764{ 1809{
765 if (fd >= 0 && fd < anfdmax) 1810 if (fd >= 0 && fd < anfdmax)
766 fd_event (EV_A_ fd, revents); 1811 fd_event_nocheck (EV_A_ fd, revents);
767} 1812}
768 1813
769/* make sure the external fd watch events are in-sync */ 1814/* make sure the external fd watch events are in-sync */
770/* with the kernel/libev internal state */ 1815/* with the kernel/libev internal state */
771inline_size void 1816inline_size void
772fd_reify (EV_P) 1817fd_reify (EV_P)
773{ 1818{
774 int i; 1819 int i;
775 1820
1821#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1822 for (i = 0; i < fdchangecnt; ++i)
1823 {
1824 int fd = fdchanges [i];
1825 ANFD *anfd = anfds + fd;
1826
1827 if (anfd->reify & EV__IOFDSET && anfd->head)
1828 {
1829 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1830
1831 if (handle != anfd->handle)
1832 {
1833 unsigned long arg;
1834
1835 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1836
1837 /* handle changed, but fd didn't - we need to do it in two steps */
1838 backend_modify (EV_A_ fd, anfd->events, 0);
1839 anfd->events = 0;
1840 anfd->handle = handle;
1841 }
1842 }
1843 }
1844#endif
1845
776 for (i = 0; i < fdchangecnt; ++i) 1846 for (i = 0; i < fdchangecnt; ++i)
777 { 1847 {
778 int fd = fdchanges [i]; 1848 int fd = fdchanges [i];
779 ANFD *anfd = anfds + fd; 1849 ANFD *anfd = anfds + fd;
780 ev_io *w; 1850 ev_io *w;
781 1851
782 unsigned char events = 0; 1852 unsigned char o_events = anfd->events;
1853 unsigned char o_reify = anfd->reify;
783 1854
784 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1855 anfd->reify = 0;
785 events |= (unsigned char)w->events;
786 1856
787#if EV_SELECT_IS_WINSOCKET 1857 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
788 if (events)
789 { 1858 {
790 unsigned long arg; 1859 anfd->events = 0;
791 #ifdef EV_FD_TO_WIN32_HANDLE 1860
792 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1861 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
793 #else 1862 anfd->events |= (unsigned char)w->events;
794 anfd->handle = _get_osfhandle (fd); 1863
795 #endif 1864 if (o_events != anfd->events)
796 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1865 o_reify = EV__IOFDSET; /* actually |= */
797 } 1866 }
798#endif
799 1867
800 { 1868 if (o_reify & EV__IOFDSET)
801 unsigned char o_events = anfd->events;
802 unsigned char o_reify = anfd->reify;
803
804 anfd->reify = 0;
805 anfd->events = events;
806
807 if (o_events != events || o_reify & EV__IOFDSET)
808 backend_modify (EV_A_ fd, o_events, events); 1869 backend_modify (EV_A_ fd, o_events, anfd->events);
809 }
810 } 1870 }
811 1871
812 fdchangecnt = 0; 1872 fdchangecnt = 0;
813} 1873}
814 1874
… …
826 fdchanges [fdchangecnt - 1] = fd; 1886 fdchanges [fdchangecnt - 1] = fd;
827 } 1887 }
828} 1888}
829 1889
830/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1890/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
831inline_speed void 1891inline_speed void ecb_cold
832fd_kill (EV_P_ int fd) 1892fd_kill (EV_P_ int fd)
833{ 1893{
834 ev_io *w; 1894 ev_io *w;
835 1895
836 while ((w = (ev_io *)anfds [fd].head)) 1896 while ((w = (ev_io *)anfds [fd].head))
… …
838 ev_io_stop (EV_A_ w); 1898 ev_io_stop (EV_A_ w);
839 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1899 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
840 } 1900 }
841} 1901}
842 1902
843/* check whether the given fd is atcually valid, for error recovery */ 1903/* check whether the given fd is actually valid, for error recovery */
844inline_size int 1904inline_size int ecb_cold
845fd_valid (int fd) 1905fd_valid (int fd)
846{ 1906{
847#ifdef _WIN32 1907#ifdef _WIN32
848 return _get_osfhandle (fd) != -1; 1908 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
849#else 1909#else
850 return fcntl (fd, F_GETFD) != -1; 1910 return fcntl (fd, F_GETFD) != -1;
851#endif 1911#endif
852} 1912}
853 1913
854/* called on EBADF to verify fds */ 1914/* called on EBADF to verify fds */
855static void noinline 1915static void noinline ecb_cold
856fd_ebadf (EV_P) 1916fd_ebadf (EV_P)
857{ 1917{
858 int fd; 1918 int fd;
859 1919
860 for (fd = 0; fd < anfdmax; ++fd) 1920 for (fd = 0; fd < anfdmax; ++fd)
… …
862 if (!fd_valid (fd) && errno == EBADF) 1922 if (!fd_valid (fd) && errno == EBADF)
863 fd_kill (EV_A_ fd); 1923 fd_kill (EV_A_ fd);
864} 1924}
865 1925
866/* called on ENOMEM in select/poll to kill some fds and retry */ 1926/* called on ENOMEM in select/poll to kill some fds and retry */
867static void noinline 1927static void noinline ecb_cold
868fd_enomem (EV_P) 1928fd_enomem (EV_P)
869{ 1929{
870 int fd; 1930 int fd;
871 1931
872 for (fd = anfdmax; fd--; ) 1932 for (fd = anfdmax; fd--; )
873 if (anfds [fd].events) 1933 if (anfds [fd].events)
874 { 1934 {
875 fd_kill (EV_A_ fd); 1935 fd_kill (EV_A_ fd);
876 return; 1936 break;
877 } 1937 }
878} 1938}
879 1939
880/* usually called after fork if backend needs to re-arm all fds from scratch */ 1940/* usually called after fork if backend needs to re-arm all fds from scratch */
881static void noinline 1941static void noinline
… …
886 for (fd = 0; fd < anfdmax; ++fd) 1946 for (fd = 0; fd < anfdmax; ++fd)
887 if (anfds [fd].events) 1947 if (anfds [fd].events)
888 { 1948 {
889 anfds [fd].events = 0; 1949 anfds [fd].events = 0;
890 anfds [fd].emask = 0; 1950 anfds [fd].emask = 0;
891 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1951 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
892 } 1952 }
893} 1953}
894 1954
1955/* used to prepare libev internal fd's */
1956/* this is not fork-safe */
1957inline_speed void
1958fd_intern (int fd)
1959{
1960#ifdef _WIN32
1961 unsigned long arg = 1;
1962 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1963#else
1964 fcntl (fd, F_SETFD, FD_CLOEXEC);
1965 fcntl (fd, F_SETFL, O_NONBLOCK);
1966#endif
1967}
1968
895/*****************************************************************************/ 1969/*****************************************************************************/
896 1970
897/* 1971/*
898 * the heap functions want a real array index. array index 0 uis guaranteed to not 1972 * the heap functions want a real array index. array index 0 is guaranteed to not
899 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1973 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
900 * the branching factor of the d-tree. 1974 * the branching factor of the d-tree.
901 */ 1975 */
902 1976
903/* 1977/*
… …
971 2045
972 for (;;) 2046 for (;;)
973 { 2047 {
974 int c = k << 1; 2048 int c = k << 1;
975 2049
976 if (c > N + HEAP0 - 1) 2050 if (c >= N + HEAP0)
977 break; 2051 break;
978 2052
979 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 2053 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
980 ? 1 : 0; 2054 ? 1 : 0;
981 2055
… …
1017 2091
1018/* move an element suitably so it is in a correct place */ 2092/* move an element suitably so it is in a correct place */
1019inline_size void 2093inline_size void
1020adjustheap (ANHE *heap, int N, int k) 2094adjustheap (ANHE *heap, int N, int k)
1021{ 2095{
1022 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2096 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1023 upheap (heap, k); 2097 upheap (heap, k);
1024 else 2098 else
1025 downheap (heap, N, k); 2099 downheap (heap, N, k);
1026} 2100}
1027 2101
… …
1040/*****************************************************************************/ 2114/*****************************************************************************/
1041 2115
1042/* associate signal watchers to a signal signal */ 2116/* associate signal watchers to a signal signal */
1043typedef struct 2117typedef struct
1044{ 2118{
2119 EV_ATOMIC_T pending;
2120#if EV_MULTIPLICITY
2121 EV_P;
2122#endif
1045 WL head; 2123 WL head;
1046 EV_ATOMIC_T gotsig;
1047} ANSIG; 2124} ANSIG;
1048 2125
1049static ANSIG *signals; 2126static ANSIG signals [EV_NSIG - 1];
1050static int signalmax;
1051
1052static EV_ATOMIC_T gotsig;
1053 2127
1054/*****************************************************************************/ 2128/*****************************************************************************/
1055 2129
1056/* used to prepare libev internal fd's */ 2130#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1057/* this is not fork-safe */ 2131
2132static void noinline ecb_cold
2133evpipe_init (EV_P)
2134{
2135 if (!ev_is_active (&pipe_w))
2136 {
2137 int fds [2];
2138
2139# if EV_USE_EVENTFD
2140 fds [0] = -1;
2141 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2142 if (fds [1] < 0 && errno == EINVAL)
2143 fds [1] = eventfd (0, 0);
2144
2145 if (fds [1] < 0)
2146# endif
2147 {
2148 while (pipe (fds))
2149 ev_syserr ("(libev) error creating signal/async pipe");
2150
2151 fd_intern (fds [0]);
2152 }
2153
2154 evpipe [0] = fds [0];
2155
2156 if (evpipe [1] < 0)
2157 evpipe [1] = fds [1]; /* first call, set write fd */
2158 else
2159 {
2160 /* on subsequent calls, do not change evpipe [1] */
2161 /* so that evpipe_write can always rely on its value. */
2162 /* this branch does not do anything sensible on windows, */
2163 /* so must not be executed on windows */
2164
2165 dup2 (fds [1], evpipe [1]);
2166 close (fds [1]);
2167 }
2168
2169 fd_intern (evpipe [1]);
2170
2171 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2172 ev_io_start (EV_A_ &pipe_w);
2173 ev_unref (EV_A); /* watcher should not keep loop alive */
2174 }
2175}
2176
1058inline_speed void 2177inline_speed void
1059fd_intern (int fd) 2178evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1060{ 2179{
1061#ifdef _WIN32 2180 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1062 unsigned long arg = 1;
1063 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1064#else
1065 fcntl (fd, F_SETFD, FD_CLOEXEC);
1066 fcntl (fd, F_SETFL, O_NONBLOCK);
1067#endif
1068}
1069 2181
1070static void noinline 2182 if (expect_true (*flag))
1071evpipe_init (EV_P) 2183 return;
1072{ 2184
1073 if (!ev_is_active (&pipe_w)) 2185 *flag = 1;
2186 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2187
2188 pipe_write_skipped = 1;
2189
2190 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2191
2192 if (pipe_write_wanted)
1074 { 2193 {
2194 int old_errno;
2195
2196 pipe_write_skipped = 0;
2197 ECB_MEMORY_FENCE_RELEASE;
2198
2199 old_errno = errno; /* save errno because write will clobber it */
2200
1075#if EV_USE_EVENTFD 2201#if EV_USE_EVENTFD
1076 if ((evfd = eventfd (0, 0)) >= 0) 2202 if (evpipe [0] < 0)
1077 { 2203 {
1078 evpipe [0] = -1; 2204 uint64_t counter = 1;
1079 fd_intern (evfd); 2205 write (evpipe [1], &counter, sizeof (uint64_t));
1080 ev_io_set (&pipe_w, evfd, EV_READ);
1081 } 2206 }
1082 else 2207 else
1083#endif 2208#endif
1084 { 2209 {
1085 while (pipe (evpipe)) 2210#ifdef _WIN32
1086 ev_syserr ("(libev) error creating signal/async pipe"); 2211 WSABUF buf;
1087 2212 DWORD sent;
1088 fd_intern (evpipe [0]); 2213 buf.buf = &buf;
1089 fd_intern (evpipe [1]); 2214 buf.len = 1;
1090 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2215 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2216#else
2217 write (evpipe [1], &(evpipe [1]), 1);
2218#endif
1091 } 2219 }
1092
1093 ev_io_start (EV_A_ &pipe_w);
1094 ev_unref (EV_A); /* watcher should not keep loop alive */
1095 }
1096}
1097
1098inline_size void
1099evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1100{
1101 if (!*flag)
1102 {
1103 int old_errno = errno; /* save errno because write might clobber it */
1104
1105 *flag = 1;
1106
1107#if EV_USE_EVENTFD
1108 if (evfd >= 0)
1109 {
1110 uint64_t counter = 1;
1111 write (evfd, &counter, sizeof (uint64_t));
1112 }
1113 else
1114#endif
1115 write (evpipe [1], &old_errno, 1);
1116 2220
1117 errno = old_errno; 2221 errno = old_errno;
1118 } 2222 }
1119} 2223}
1120 2224
1121/* called whenever the libev signal pipe */ 2225/* called whenever the libev signal pipe */
1122/* got some events (signal, async) */ 2226/* got some events (signal, async) */
1123static void 2227static void
1124pipecb (EV_P_ ev_io *iow, int revents) 2228pipecb (EV_P_ ev_io *iow, int revents)
1125{ 2229{
2230 int i;
2231
2232 if (revents & EV_READ)
2233 {
1126#if EV_USE_EVENTFD 2234#if EV_USE_EVENTFD
1127 if (evfd >= 0) 2235 if (evpipe [0] < 0)
1128 { 2236 {
1129 uint64_t counter; 2237 uint64_t counter;
1130 read (evfd, &counter, sizeof (uint64_t)); 2238 read (evpipe [1], &counter, sizeof (uint64_t));
1131 } 2239 }
1132 else 2240 else
1133#endif 2241#endif
1134 { 2242 {
1135 char dummy; 2243 char dummy[4];
2244#ifdef _WIN32
2245 WSABUF buf;
2246 DWORD recvd;
2247 DWORD flags = 0;
2248 buf.buf = dummy;
2249 buf.len = sizeof (dummy);
2250 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2251#else
1136 read (evpipe [0], &dummy, 1); 2252 read (evpipe [0], &dummy, sizeof (dummy));
2253#endif
2254 }
2255 }
2256
2257 pipe_write_skipped = 0;
2258
2259 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2260
2261#if EV_SIGNAL_ENABLE
2262 if (sig_pending)
1137 } 2263 {
2264 sig_pending = 0;
1138 2265
1139 if (gotsig && ev_is_default_loop (EV_A)) 2266 ECB_MEMORY_FENCE;
1140 {
1141 int signum;
1142 gotsig = 0;
1143 2267
1144 for (signum = signalmax; signum--; ) 2268 for (i = EV_NSIG - 1; i--; )
1145 if (signals [signum].gotsig) 2269 if (expect_false (signals [i].pending))
1146 ev_feed_signal_event (EV_A_ signum + 1); 2270 ev_feed_signal_event (EV_A_ i + 1);
1147 } 2271 }
2272#endif
1148 2273
1149#if EV_ASYNC_ENABLE 2274#if EV_ASYNC_ENABLE
1150 if (gotasync) 2275 if (async_pending)
1151 { 2276 {
1152 int i; 2277 async_pending = 0;
1153 gotasync = 0; 2278
2279 ECB_MEMORY_FENCE;
1154 2280
1155 for (i = asynccnt; i--; ) 2281 for (i = asynccnt; i--; )
1156 if (asyncs [i]->sent) 2282 if (asyncs [i]->sent)
1157 { 2283 {
1158 asyncs [i]->sent = 0; 2284 asyncs [i]->sent = 0;
2285 ECB_MEMORY_FENCE_RELEASE;
1159 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2286 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1160 } 2287 }
1161 } 2288 }
1162#endif 2289#endif
1163} 2290}
1164 2291
1165/*****************************************************************************/ 2292/*****************************************************************************/
1166 2293
2294void
2295ev_feed_signal (int signum) EV_THROW
2296{
2297#if EV_MULTIPLICITY
2298 EV_P;
2299 ECB_MEMORY_FENCE_ACQUIRE;
2300 EV_A = signals [signum - 1].loop;
2301
2302 if (!EV_A)
2303 return;
2304#endif
2305
2306 signals [signum - 1].pending = 1;
2307 evpipe_write (EV_A_ &sig_pending);
2308}
2309
1167static void 2310static void
1168ev_sighandler (int signum) 2311ev_sighandler (int signum)
1169{ 2312{
2313#ifdef _WIN32
2314 signal (signum, ev_sighandler);
2315#endif
2316
2317 ev_feed_signal (signum);
2318}
2319
2320void noinline
2321ev_feed_signal_event (EV_P_ int signum) EV_THROW
2322{
2323 WL w;
2324
2325 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2326 return;
2327
2328 --signum;
2329
1170#if EV_MULTIPLICITY 2330#if EV_MULTIPLICITY
1171 struct ev_loop *loop = &default_loop_struct; 2331 /* it is permissible to try to feed a signal to the wrong loop */
1172#endif 2332 /* or, likely more useful, feeding a signal nobody is waiting for */
1173 2333
1174#if _WIN32 2334 if (expect_false (signals [signum].loop != EV_A))
1175 signal (signum, ev_sighandler);
1176#endif
1177
1178 signals [signum - 1].gotsig = 1;
1179 evpipe_write (EV_A_ &gotsig);
1180}
1181
1182void noinline
1183ev_feed_signal_event (EV_P_ int signum)
1184{
1185 WL w;
1186
1187#if EV_MULTIPLICITY
1188 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1189#endif
1190
1191 --signum;
1192
1193 if (signum < 0 || signum >= signalmax)
1194 return; 2335 return;
2336#endif
1195 2337
1196 signals [signum].gotsig = 0; 2338 signals [signum].pending = 0;
2339 ECB_MEMORY_FENCE_RELEASE;
1197 2340
1198 for (w = signals [signum].head; w; w = w->next) 2341 for (w = signals [signum].head; w; w = w->next)
1199 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2342 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1200} 2343}
1201 2344
2345#if EV_USE_SIGNALFD
2346static void
2347sigfdcb (EV_P_ ev_io *iow, int revents)
2348{
2349 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2350
2351 for (;;)
2352 {
2353 ssize_t res = read (sigfd, si, sizeof (si));
2354
2355 /* not ISO-C, as res might be -1, but works with SuS */
2356 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2357 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2358
2359 if (res < (ssize_t)sizeof (si))
2360 break;
2361 }
2362}
2363#endif
2364
2365#endif
2366
1202/*****************************************************************************/ 2367/*****************************************************************************/
1203 2368
2369#if EV_CHILD_ENABLE
1204static WL childs [EV_PID_HASHSIZE]; 2370static WL childs [EV_PID_HASHSIZE];
1205
1206#ifndef _WIN32
1207 2371
1208static ev_signal childev; 2372static ev_signal childev;
1209 2373
1210#ifndef WIFCONTINUED 2374#ifndef WIFCONTINUED
1211# define WIFCONTINUED(status) 0 2375# define WIFCONTINUED(status) 0
… …
1216child_reap (EV_P_ int chain, int pid, int status) 2380child_reap (EV_P_ int chain, int pid, int status)
1217{ 2381{
1218 ev_child *w; 2382 ev_child *w;
1219 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2383 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1220 2384
1221 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2385 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1222 { 2386 {
1223 if ((w->pid == pid || !w->pid) 2387 if ((w->pid == pid || !w->pid)
1224 && (!traced || (w->flags & 1))) 2388 && (!traced || (w->flags & 1)))
1225 { 2389 {
1226 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2390 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1251 /* make sure we are called again until all children have been reaped */ 2415 /* make sure we are called again until all children have been reaped */
1252 /* we need to do it this way so that the callback gets called before we continue */ 2416 /* we need to do it this way so that the callback gets called before we continue */
1253 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2417 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1254 2418
1255 child_reap (EV_A_ pid, pid, status); 2419 child_reap (EV_A_ pid, pid, status);
1256 if (EV_PID_HASHSIZE > 1) 2420 if ((EV_PID_HASHSIZE) > 1)
1257 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2421 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1258} 2422}
1259 2423
1260#endif 2424#endif
1261 2425
1262/*****************************************************************************/ 2426/*****************************************************************************/
1263 2427
2428#if EV_USE_IOCP
2429# include "ev_iocp.c"
2430#endif
1264#if EV_USE_PORT 2431#if EV_USE_PORT
1265# include "ev_port.c" 2432# include "ev_port.c"
1266#endif 2433#endif
1267#if EV_USE_KQUEUE 2434#if EV_USE_KQUEUE
1268# include "ev_kqueue.c" 2435# include "ev_kqueue.c"
… …
1275#endif 2442#endif
1276#if EV_USE_SELECT 2443#if EV_USE_SELECT
1277# include "ev_select.c" 2444# include "ev_select.c"
1278#endif 2445#endif
1279 2446
1280int 2447int ecb_cold
1281ev_version_major (void) 2448ev_version_major (void) EV_THROW
1282{ 2449{
1283 return EV_VERSION_MAJOR; 2450 return EV_VERSION_MAJOR;
1284} 2451}
1285 2452
1286int 2453int ecb_cold
1287ev_version_minor (void) 2454ev_version_minor (void) EV_THROW
1288{ 2455{
1289 return EV_VERSION_MINOR; 2456 return EV_VERSION_MINOR;
1290} 2457}
1291 2458
1292/* return true if we are running with elevated privileges and should ignore env variables */ 2459/* return true if we are running with elevated privileges and should ignore env variables */
1293int inline_size 2460int inline_size ecb_cold
1294enable_secure (void) 2461enable_secure (void)
1295{ 2462{
1296#ifdef _WIN32 2463#ifdef _WIN32
1297 return 0; 2464 return 0;
1298#else 2465#else
1299 return getuid () != geteuid () 2466 return getuid () != geteuid ()
1300 || getgid () != getegid (); 2467 || getgid () != getegid ();
1301#endif 2468#endif
1302} 2469}
1303 2470
1304unsigned int 2471unsigned int ecb_cold
1305ev_supported_backends (void) 2472ev_supported_backends (void) EV_THROW
1306{ 2473{
1307 unsigned int flags = 0; 2474 unsigned int flags = 0;
1308 2475
1309 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2476 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1310 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2477 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1313 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2480 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1314 2481
1315 return flags; 2482 return flags;
1316} 2483}
1317 2484
1318unsigned int 2485unsigned int ecb_cold
1319ev_recommended_backends (void) 2486ev_recommended_backends (void) EV_THROW
1320{ 2487{
1321 unsigned int flags = ev_supported_backends (); 2488 unsigned int flags = ev_supported_backends ();
1322 2489
1323#ifndef __NetBSD__ 2490#ifndef __NetBSD__
1324 /* kqueue is borked on everything but netbsd apparently */ 2491 /* kqueue is borked on everything but netbsd apparently */
… …
1328#ifdef __APPLE__ 2495#ifdef __APPLE__
1329 /* only select works correctly on that "unix-certified" platform */ 2496 /* only select works correctly on that "unix-certified" platform */
1330 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2497 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1331 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2498 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1332#endif 2499#endif
2500#ifdef __FreeBSD__
2501 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2502#endif
1333 2503
1334 return flags; 2504 return flags;
1335} 2505}
1336 2506
2507unsigned int ecb_cold
2508ev_embeddable_backends (void) EV_THROW
2509{
2510 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2511
2512 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2513 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2514 flags &= ~EVBACKEND_EPOLL;
2515
2516 return flags;
2517}
2518
1337unsigned int 2519unsigned int
1338ev_embeddable_backends (void) 2520ev_backend (EV_P) EV_THROW
1339{ 2521{
1340 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2522 return backend;
1341
1342 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1343 /* please fix it and tell me how to detect the fix */
1344 flags &= ~EVBACKEND_EPOLL;
1345
1346 return flags;
1347} 2523}
1348 2524
2525#if EV_FEATURE_API
1349unsigned int 2526unsigned int
1350ev_backend (EV_P) 2527ev_iteration (EV_P) EV_THROW
1351{ 2528{
1352 return backend; 2529 return loop_count;
1353} 2530}
1354 2531
1355unsigned int 2532unsigned int
1356ev_loop_count (EV_P) 2533ev_depth (EV_P) EV_THROW
1357{ 2534{
1358 return loop_count; 2535 return loop_depth;
1359} 2536}
1360 2537
1361void 2538void
1362ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2539ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1363{ 2540{
1364 io_blocktime = interval; 2541 io_blocktime = interval;
1365} 2542}
1366 2543
1367void 2544void
1368ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2545ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1369{ 2546{
1370 timeout_blocktime = interval; 2547 timeout_blocktime = interval;
1371} 2548}
1372 2549
2550void
2551ev_set_userdata (EV_P_ void *data) EV_THROW
2552{
2553 userdata = data;
2554}
2555
2556void *
2557ev_userdata (EV_P) EV_THROW
2558{
2559 return userdata;
2560}
2561
2562void
2563ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
2564{
2565 invoke_cb = invoke_pending_cb;
2566}
2567
2568void
2569ev_set_loop_release_cb (EV_P_ ev_loop_callback_nothrow release, ev_loop_callback_nothrow acquire) EV_THROW
2570{
2571 release_cb = release;
2572 acquire_cb = acquire;
2573}
2574#endif
2575
1373/* initialise a loop structure, must be zero-initialised */ 2576/* initialise a loop structure, must be zero-initialised */
1374static void noinline 2577static void noinline ecb_cold
1375loop_init (EV_P_ unsigned int flags) 2578loop_init (EV_P_ unsigned int flags) EV_THROW
1376{ 2579{
1377 if (!backend) 2580 if (!backend)
1378 { 2581 {
2582 origflags = flags;
2583
1379#if EV_USE_REALTIME 2584#if EV_USE_REALTIME
1380 if (!have_realtime) 2585 if (!have_realtime)
1381 { 2586 {
1382 struct timespec ts; 2587 struct timespec ts;
1383 2588
… …
1394 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2599 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1395 have_monotonic = 1; 2600 have_monotonic = 1;
1396 } 2601 }
1397#endif 2602#endif
1398 2603
1399 ev_rt_now = ev_time ();
1400 mn_now = get_clock ();
1401 now_floor = mn_now;
1402 rtmn_diff = ev_rt_now - mn_now;
1403
1404 io_blocktime = 0.;
1405 timeout_blocktime = 0.;
1406 backend = 0;
1407 backend_fd = -1;
1408 gotasync = 0;
1409#if EV_USE_INOTIFY
1410 fs_fd = -2;
1411#endif
1412
1413 /* pid check not overridable via env */ 2604 /* pid check not overridable via env */
1414#ifndef _WIN32 2605#ifndef _WIN32
1415 if (flags & EVFLAG_FORKCHECK) 2606 if (flags & EVFLAG_FORKCHECK)
1416 curpid = getpid (); 2607 curpid = getpid ();
1417#endif 2608#endif
… …
1419 if (!(flags & EVFLAG_NOENV) 2610 if (!(flags & EVFLAG_NOENV)
1420 && !enable_secure () 2611 && !enable_secure ()
1421 && getenv ("LIBEV_FLAGS")) 2612 && getenv ("LIBEV_FLAGS"))
1422 flags = atoi (getenv ("LIBEV_FLAGS")); 2613 flags = atoi (getenv ("LIBEV_FLAGS"));
1423 2614
1424 if (!(flags & 0x0000ffffU)) 2615 ev_rt_now = ev_time ();
2616 mn_now = get_clock ();
2617 now_floor = mn_now;
2618 rtmn_diff = ev_rt_now - mn_now;
2619#if EV_FEATURE_API
2620 invoke_cb = ev_invoke_pending;
2621#endif
2622
2623 io_blocktime = 0.;
2624 timeout_blocktime = 0.;
2625 backend = 0;
2626 backend_fd = -1;
2627 sig_pending = 0;
2628#if EV_ASYNC_ENABLE
2629 async_pending = 0;
2630#endif
2631 pipe_write_skipped = 0;
2632 pipe_write_wanted = 0;
2633 evpipe [0] = -1;
2634 evpipe [1] = -1;
2635#if EV_USE_INOTIFY
2636 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2637#endif
2638#if EV_USE_SIGNALFD
2639 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2640#endif
2641
2642 if (!(flags & EVBACKEND_MASK))
1425 flags |= ev_recommended_backends (); 2643 flags |= ev_recommended_backends ();
1426 2644
2645#if EV_USE_IOCP
2646 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2647#endif
1427#if EV_USE_PORT 2648#if EV_USE_PORT
1428 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2649 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1429#endif 2650#endif
1430#if EV_USE_KQUEUE 2651#if EV_USE_KQUEUE
1431 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2652 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1440 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2661 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1441#endif 2662#endif
1442 2663
1443 ev_prepare_init (&pending_w, pendingcb); 2664 ev_prepare_init (&pending_w, pendingcb);
1444 2665
2666#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1445 ev_init (&pipe_w, pipecb); 2667 ev_init (&pipe_w, pipecb);
1446 ev_set_priority (&pipe_w, EV_MAXPRI); 2668 ev_set_priority (&pipe_w, EV_MAXPRI);
2669#endif
1447 } 2670 }
1448} 2671}
1449 2672
1450/* free up a loop structure */ 2673/* free up a loop structure */
1451static void noinline 2674void ecb_cold
1452loop_destroy (EV_P) 2675ev_loop_destroy (EV_P)
1453{ 2676{
1454 int i; 2677 int i;
1455 2678
2679#if EV_MULTIPLICITY
2680 /* mimic free (0) */
2681 if (!EV_A)
2682 return;
2683#endif
2684
2685#if EV_CLEANUP_ENABLE
2686 /* queue cleanup watchers (and execute them) */
2687 if (expect_false (cleanupcnt))
2688 {
2689 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2690 EV_INVOKE_PENDING;
2691 }
2692#endif
2693
2694#if EV_CHILD_ENABLE
2695 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2696 {
2697 ev_ref (EV_A); /* child watcher */
2698 ev_signal_stop (EV_A_ &childev);
2699 }
2700#endif
2701
1456 if (ev_is_active (&pipe_w)) 2702 if (ev_is_active (&pipe_w))
1457 { 2703 {
1458 ev_ref (EV_A); /* signal watcher */ 2704 /*ev_ref (EV_A);*/
1459 ev_io_stop (EV_A_ &pipe_w); 2705 /*ev_io_stop (EV_A_ &pipe_w);*/
1460 2706
2707 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2708 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2709 }
2710
1461#if EV_USE_EVENTFD 2711#if EV_USE_SIGNALFD
1462 if (evfd >= 0) 2712 if (ev_is_active (&sigfd_w))
1463 close (evfd); 2713 close (sigfd);
1464#endif 2714#endif
1465
1466 if (evpipe [0] >= 0)
1467 {
1468 close (evpipe [0]);
1469 close (evpipe [1]);
1470 }
1471 }
1472 2715
1473#if EV_USE_INOTIFY 2716#if EV_USE_INOTIFY
1474 if (fs_fd >= 0) 2717 if (fs_fd >= 0)
1475 close (fs_fd); 2718 close (fs_fd);
1476#endif 2719#endif
1477 2720
1478 if (backend_fd >= 0) 2721 if (backend_fd >= 0)
1479 close (backend_fd); 2722 close (backend_fd);
1480 2723
2724#if EV_USE_IOCP
2725 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2726#endif
1481#if EV_USE_PORT 2727#if EV_USE_PORT
1482 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2728 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1483#endif 2729#endif
1484#if EV_USE_KQUEUE 2730#if EV_USE_KQUEUE
1485 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2731 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1500#if EV_IDLE_ENABLE 2746#if EV_IDLE_ENABLE
1501 array_free (idle, [i]); 2747 array_free (idle, [i]);
1502#endif 2748#endif
1503 } 2749 }
1504 2750
1505 ev_free (anfds); anfdmax = 0; 2751 ev_free (anfds); anfds = 0; anfdmax = 0;
1506 2752
1507 /* have to use the microsoft-never-gets-it-right macro */ 2753 /* have to use the microsoft-never-gets-it-right macro */
1508 array_free (rfeed, EMPTY); 2754 array_free (rfeed, EMPTY);
1509 array_free (fdchange, EMPTY); 2755 array_free (fdchange, EMPTY);
1510 array_free (timer, EMPTY); 2756 array_free (timer, EMPTY);
… …
1512 array_free (periodic, EMPTY); 2758 array_free (periodic, EMPTY);
1513#endif 2759#endif
1514#if EV_FORK_ENABLE 2760#if EV_FORK_ENABLE
1515 array_free (fork, EMPTY); 2761 array_free (fork, EMPTY);
1516#endif 2762#endif
2763#if EV_CLEANUP_ENABLE
2764 array_free (cleanup, EMPTY);
2765#endif
1517 array_free (prepare, EMPTY); 2766 array_free (prepare, EMPTY);
1518 array_free (check, EMPTY); 2767 array_free (check, EMPTY);
1519#if EV_ASYNC_ENABLE 2768#if EV_ASYNC_ENABLE
1520 array_free (async, EMPTY); 2769 array_free (async, EMPTY);
1521#endif 2770#endif
1522 2771
1523 backend = 0; 2772 backend = 0;
2773
2774#if EV_MULTIPLICITY
2775 if (ev_is_default_loop (EV_A))
2776#endif
2777 ev_default_loop_ptr = 0;
2778#if EV_MULTIPLICITY
2779 else
2780 ev_free (EV_A);
2781#endif
1524} 2782}
1525 2783
1526#if EV_USE_INOTIFY 2784#if EV_USE_INOTIFY
1527inline_size void infy_fork (EV_P); 2785inline_size void infy_fork (EV_P);
1528#endif 2786#endif
… …
1541#endif 2799#endif
1542#if EV_USE_INOTIFY 2800#if EV_USE_INOTIFY
1543 infy_fork (EV_A); 2801 infy_fork (EV_A);
1544#endif 2802#endif
1545 2803
2804#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1546 if (ev_is_active (&pipe_w)) 2805 if (ev_is_active (&pipe_w))
1547 { 2806 {
1548 /* this "locks" the handlers against writing to the pipe */ 2807 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1549 /* while we modify the fd vars */
1550 gotsig = 1;
1551#if EV_ASYNC_ENABLE
1552 gotasync = 1;
1553#endif
1554 2808
1555 ev_ref (EV_A); 2809 ev_ref (EV_A);
1556 ev_io_stop (EV_A_ &pipe_w); 2810 ev_io_stop (EV_A_ &pipe_w);
1557 2811
1558#if EV_USE_EVENTFD
1559 if (evfd >= 0)
1560 close (evfd);
1561#endif
1562
1563 if (evpipe [0] >= 0) 2812 if (evpipe [0] >= 0)
1564 { 2813 EV_WIN32_CLOSE_FD (evpipe [0]);
1565 close (evpipe [0]);
1566 close (evpipe [1]);
1567 }
1568 2814
1569 evpipe_init (EV_A); 2815 evpipe_init (EV_A);
1570 /* now iterate over everything, in case we missed something */ 2816 /* iterate over everything, in case we missed something before */
1571 pipecb (EV_A_ &pipe_w, EV_READ); 2817 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1572 } 2818 }
2819#endif
1573 2820
1574 postfork = 0; 2821 postfork = 0;
1575} 2822}
1576 2823
1577#if EV_MULTIPLICITY 2824#if EV_MULTIPLICITY
1578 2825
1579struct ev_loop * 2826struct ev_loop * ecb_cold
1580ev_loop_new (unsigned int flags) 2827ev_loop_new (unsigned int flags) EV_THROW
1581{ 2828{
1582 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2829 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1583 2830
1584 memset (loop, 0, sizeof (struct ev_loop)); 2831 memset (EV_A, 0, sizeof (struct ev_loop));
1585
1586 loop_init (EV_A_ flags); 2832 loop_init (EV_A_ flags);
1587 2833
1588 if (ev_backend (EV_A)) 2834 if (ev_backend (EV_A))
1589 return loop; 2835 return EV_A;
1590 2836
2837 ev_free (EV_A);
1591 return 0; 2838 return 0;
1592} 2839}
1593 2840
1594void 2841#endif /* multiplicity */
1595ev_loop_destroy (EV_P)
1596{
1597 loop_destroy (EV_A);
1598 ev_free (loop);
1599}
1600
1601void
1602ev_loop_fork (EV_P)
1603{
1604 postfork = 1; /* must be in line with ev_default_fork */
1605}
1606 2842
1607#if EV_VERIFY 2843#if EV_VERIFY
1608static void noinline 2844static void noinline ecb_cold
1609verify_watcher (EV_P_ W w) 2845verify_watcher (EV_P_ W w)
1610{ 2846{
1611 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2847 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1612 2848
1613 if (w->pending) 2849 if (w->pending)
1614 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2850 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1615} 2851}
1616 2852
1617static void noinline 2853static void noinline ecb_cold
1618verify_heap (EV_P_ ANHE *heap, int N) 2854verify_heap (EV_P_ ANHE *heap, int N)
1619{ 2855{
1620 int i; 2856 int i;
1621 2857
1622 for (i = HEAP0; i < N + HEAP0; ++i) 2858 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1627 2863
1628 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2864 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1629 } 2865 }
1630} 2866}
1631 2867
1632static void noinline 2868static void noinline ecb_cold
1633array_verify (EV_P_ W *ws, int cnt) 2869array_verify (EV_P_ W *ws, int cnt)
1634{ 2870{
1635 while (cnt--) 2871 while (cnt--)
1636 { 2872 {
1637 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2873 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1638 verify_watcher (EV_A_ ws [cnt]); 2874 verify_watcher (EV_A_ ws [cnt]);
1639 } 2875 }
1640} 2876}
1641#endif 2877#endif
1642 2878
1643void 2879#if EV_FEATURE_API
1644ev_loop_verify (EV_P) 2880void ecb_cold
2881ev_verify (EV_P) EV_THROW
1645{ 2882{
1646#if EV_VERIFY 2883#if EV_VERIFY
1647 int i; 2884 int i;
1648 WL w; 2885 WL w, w2;
1649 2886
1650 assert (activecnt >= -1); 2887 assert (activecnt >= -1);
1651 2888
1652 assert (fdchangemax >= fdchangecnt); 2889 assert (fdchangemax >= fdchangecnt);
1653 for (i = 0; i < fdchangecnt; ++i) 2890 for (i = 0; i < fdchangecnt; ++i)
1654 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2891 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1655 2892
1656 assert (anfdmax >= 0); 2893 assert (anfdmax >= 0);
1657 for (i = 0; i < anfdmax; ++i) 2894 for (i = 0; i < anfdmax; ++i)
2895 {
2896 int j = 0;
2897
1658 for (w = anfds [i].head; w; w = w->next) 2898 for (w = w2 = anfds [i].head; w; w = w->next)
1659 { 2899 {
1660 verify_watcher (EV_A_ (W)w); 2900 verify_watcher (EV_A_ (W)w);
2901
2902 if (j++ & 1)
2903 {
2904 assert (("libev: io watcher list contains a loop", w != w2));
2905 w2 = w2->next;
2906 }
2907
1661 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2908 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1662 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2909 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1663 } 2910 }
2911 }
1664 2912
1665 assert (timermax >= timercnt); 2913 assert (timermax >= timercnt);
1666 verify_heap (EV_A_ timers, timercnt); 2914 verify_heap (EV_A_ timers, timercnt);
1667 2915
1668#if EV_PERIODIC_ENABLE 2916#if EV_PERIODIC_ENABLE
… …
1683#if EV_FORK_ENABLE 2931#if EV_FORK_ENABLE
1684 assert (forkmax >= forkcnt); 2932 assert (forkmax >= forkcnt);
1685 array_verify (EV_A_ (W *)forks, forkcnt); 2933 array_verify (EV_A_ (W *)forks, forkcnt);
1686#endif 2934#endif
1687 2935
2936#if EV_CLEANUP_ENABLE
2937 assert (cleanupmax >= cleanupcnt);
2938 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2939#endif
2940
1688#if EV_ASYNC_ENABLE 2941#if EV_ASYNC_ENABLE
1689 assert (asyncmax >= asynccnt); 2942 assert (asyncmax >= asynccnt);
1690 array_verify (EV_A_ (W *)asyncs, asynccnt); 2943 array_verify (EV_A_ (W *)asyncs, asynccnt);
1691#endif 2944#endif
1692 2945
2946#if EV_PREPARE_ENABLE
1693 assert (preparemax >= preparecnt); 2947 assert (preparemax >= preparecnt);
1694 array_verify (EV_A_ (W *)prepares, preparecnt); 2948 array_verify (EV_A_ (W *)prepares, preparecnt);
2949#endif
1695 2950
2951#if EV_CHECK_ENABLE
1696 assert (checkmax >= checkcnt); 2952 assert (checkmax >= checkcnt);
1697 array_verify (EV_A_ (W *)checks, checkcnt); 2953 array_verify (EV_A_ (W *)checks, checkcnt);
2954#endif
1698 2955
1699# if 0 2956# if 0
2957#if EV_CHILD_ENABLE
1700 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2958 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1701 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2959 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2960#endif
1702# endif 2961# endif
1703#endif 2962#endif
1704} 2963}
1705 2964#endif
1706#endif /* multiplicity */
1707 2965
1708#if EV_MULTIPLICITY 2966#if EV_MULTIPLICITY
1709struct ev_loop * 2967struct ev_loop * ecb_cold
1710ev_default_loop_init (unsigned int flags)
1711#else 2968#else
1712int 2969int
2970#endif
1713ev_default_loop (unsigned int flags) 2971ev_default_loop (unsigned int flags) EV_THROW
1714#endif
1715{ 2972{
1716 if (!ev_default_loop_ptr) 2973 if (!ev_default_loop_ptr)
1717 { 2974 {
1718#if EV_MULTIPLICITY 2975#if EV_MULTIPLICITY
1719 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2976 EV_P = ev_default_loop_ptr = &default_loop_struct;
1720#else 2977#else
1721 ev_default_loop_ptr = 1; 2978 ev_default_loop_ptr = 1;
1722#endif 2979#endif
1723 2980
1724 loop_init (EV_A_ flags); 2981 loop_init (EV_A_ flags);
1725 2982
1726 if (ev_backend (EV_A)) 2983 if (ev_backend (EV_A))
1727 { 2984 {
1728#ifndef _WIN32 2985#if EV_CHILD_ENABLE
1729 ev_signal_init (&childev, childcb, SIGCHLD); 2986 ev_signal_init (&childev, childcb, SIGCHLD);
1730 ev_set_priority (&childev, EV_MAXPRI); 2987 ev_set_priority (&childev, EV_MAXPRI);
1731 ev_signal_start (EV_A_ &childev); 2988 ev_signal_start (EV_A_ &childev);
1732 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2989 ev_unref (EV_A); /* child watcher should not keep loop alive */
1733#endif 2990#endif
… …
1738 2995
1739 return ev_default_loop_ptr; 2996 return ev_default_loop_ptr;
1740} 2997}
1741 2998
1742void 2999void
1743ev_default_destroy (void) 3000ev_loop_fork (EV_P) EV_THROW
1744{ 3001{
1745#if EV_MULTIPLICITY 3002 postfork = 1;
1746 struct ev_loop *loop = ev_default_loop_ptr;
1747#endif
1748
1749 ev_default_loop_ptr = 0;
1750
1751#ifndef _WIN32
1752 ev_ref (EV_A); /* child watcher */
1753 ev_signal_stop (EV_A_ &childev);
1754#endif
1755
1756 loop_destroy (EV_A);
1757}
1758
1759void
1760ev_default_fork (void)
1761{
1762#if EV_MULTIPLICITY
1763 struct ev_loop *loop = ev_default_loop_ptr;
1764#endif
1765
1766 postfork = 1; /* must be in line with ev_loop_fork */
1767} 3003}
1768 3004
1769/*****************************************************************************/ 3005/*****************************************************************************/
1770 3006
1771void 3007void
1772ev_invoke (EV_P_ void *w, int revents) 3008ev_invoke (EV_P_ void *w, int revents)
1773{ 3009{
1774 EV_CB_INVOKE ((W)w, revents); 3010 EV_CB_INVOKE ((W)w, revents);
1775} 3011}
1776 3012
1777inline_speed void 3013unsigned int
1778call_pending (EV_P) 3014ev_pending_count (EV_P) EV_THROW
1779{ 3015{
1780 int pri; 3016 int pri;
3017 unsigned int count = 0;
1781 3018
1782 for (pri = NUMPRI; pri--; ) 3019 for (pri = NUMPRI; pri--; )
3020 count += pendingcnt [pri];
3021
3022 return count;
3023}
3024
3025void noinline
3026ev_invoke_pending (EV_P)
3027{
3028 pendingpri = NUMPRI;
3029
3030 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3031 {
3032 --pendingpri;
3033
1783 while (pendingcnt [pri]) 3034 while (pendingcnt [pendingpri])
1784 { 3035 {
1785 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3036 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1786 3037
1787 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1788 /* ^ this is no longer true, as pending_w could be here */
1789
1790 p->w->pending = 0; 3038 p->w->pending = 0;
1791 EV_CB_INVOKE (p->w, p->events); 3039 EV_CB_INVOKE (p->w, p->events);
1792 EV_FREQUENT_CHECK; 3040 EV_FREQUENT_CHECK;
1793 } 3041 }
3042 }
1794} 3043}
1795 3044
1796#if EV_IDLE_ENABLE 3045#if EV_IDLE_ENABLE
1797/* make idle watchers pending. this handles the "call-idle */ 3046/* make idle watchers pending. this handles the "call-idle */
1798/* only when higher priorities are idle" logic */ 3047/* only when higher priorities are idle" logic */
… …
1850 EV_FREQUENT_CHECK; 3099 EV_FREQUENT_CHECK;
1851 feed_reverse (EV_A_ (W)w); 3100 feed_reverse (EV_A_ (W)w);
1852 } 3101 }
1853 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3102 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1854 3103
1855 feed_reverse_done (EV_A_ EV_TIMEOUT); 3104 feed_reverse_done (EV_A_ EV_TIMER);
1856 } 3105 }
1857} 3106}
1858 3107
1859#if EV_PERIODIC_ENABLE 3108#if EV_PERIODIC_ENABLE
3109
3110static void noinline
3111periodic_recalc (EV_P_ ev_periodic *w)
3112{
3113 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3114 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3115
3116 /* the above almost always errs on the low side */
3117 while (at <= ev_rt_now)
3118 {
3119 ev_tstamp nat = at + w->interval;
3120
3121 /* when resolution fails us, we use ev_rt_now */
3122 if (expect_false (nat == at))
3123 {
3124 at = ev_rt_now;
3125 break;
3126 }
3127
3128 at = nat;
3129 }
3130
3131 ev_at (w) = at;
3132}
3133
1860/* make periodics pending */ 3134/* make periodics pending */
1861inline_size void 3135inline_size void
1862periodics_reify (EV_P) 3136periodics_reify (EV_P)
1863{ 3137{
1864 EV_FREQUENT_CHECK; 3138 EV_FREQUENT_CHECK;
1865 3139
1866 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3140 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1867 { 3141 {
1868 int feed_count = 0;
1869
1870 do 3142 do
1871 { 3143 {
1872 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3144 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1873 3145
1874 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3146 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1883 ANHE_at_cache (periodics [HEAP0]); 3155 ANHE_at_cache (periodics [HEAP0]);
1884 downheap (periodics, periodiccnt, HEAP0); 3156 downheap (periodics, periodiccnt, HEAP0);
1885 } 3157 }
1886 else if (w->interval) 3158 else if (w->interval)
1887 { 3159 {
1888 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3160 periodic_recalc (EV_A_ w);
1889 /* if next trigger time is not sufficiently in the future, put it there */
1890 /* this might happen because of floating point inexactness */
1891 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1892 {
1893 ev_at (w) += w->interval;
1894
1895 /* if interval is unreasonably low we might still have a time in the past */
1896 /* so correct this. this will make the periodic very inexact, but the user */
1897 /* has effectively asked to get triggered more often than possible */
1898 if (ev_at (w) < ev_rt_now)
1899 ev_at (w) = ev_rt_now;
1900 }
1901
1902 ANHE_at_cache (periodics [HEAP0]); 3161 ANHE_at_cache (periodics [HEAP0]);
1903 downheap (periodics, periodiccnt, HEAP0); 3162 downheap (periodics, periodiccnt, HEAP0);
1904 } 3163 }
1905 else 3164 else
1906 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3165 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1913 feed_reverse_done (EV_A_ EV_PERIODIC); 3172 feed_reverse_done (EV_A_ EV_PERIODIC);
1914 } 3173 }
1915} 3174}
1916 3175
1917/* simply recalculate all periodics */ 3176/* simply recalculate all periodics */
1918/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3177/* TODO: maybe ensure that at least one event happens when jumping forward? */
1919static void noinline 3178static void noinline ecb_cold
1920periodics_reschedule (EV_P) 3179periodics_reschedule (EV_P)
1921{ 3180{
1922 int i; 3181 int i;
1923 3182
1924 /* adjust periodics after time jump */ 3183 /* adjust periodics after time jump */
… …
1927 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3186 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1928 3187
1929 if (w->reschedule_cb) 3188 if (w->reschedule_cb)
1930 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3189 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1931 else if (w->interval) 3190 else if (w->interval)
1932 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3191 periodic_recalc (EV_A_ w);
1933 3192
1934 ANHE_at_cache (periodics [i]); 3193 ANHE_at_cache (periodics [i]);
1935 } 3194 }
1936 3195
1937 reheap (periodics, periodiccnt); 3196 reheap (periodics, periodiccnt);
1938} 3197}
1939#endif 3198#endif
1940 3199
1941/* adjust all timers by a given offset */ 3200/* adjust all timers by a given offset */
1942static void noinline 3201static void noinline ecb_cold
1943timers_reschedule (EV_P_ ev_tstamp adjust) 3202timers_reschedule (EV_P_ ev_tstamp adjust)
1944{ 3203{
1945 int i; 3204 int i;
1946 3205
1947 for (i = 0; i < timercnt; ++i) 3206 for (i = 0; i < timercnt; ++i)
… …
1951 ANHE_at_cache (*he); 3210 ANHE_at_cache (*he);
1952 } 3211 }
1953} 3212}
1954 3213
1955/* fetch new monotonic and realtime times from the kernel */ 3214/* fetch new monotonic and realtime times from the kernel */
1956/* also detetc if there was a timejump, and act accordingly */ 3215/* also detect if there was a timejump, and act accordingly */
1957inline_speed void 3216inline_speed void
1958time_update (EV_P_ ev_tstamp max_block) 3217time_update (EV_P_ ev_tstamp max_block)
1959{ 3218{
1960#if EV_USE_MONOTONIC 3219#if EV_USE_MONOTONIC
1961 if (expect_true (have_monotonic)) 3220 if (expect_true (have_monotonic))
… …
1984 * doesn't hurt either as we only do this on time-jumps or 3243 * doesn't hurt either as we only do this on time-jumps or
1985 * in the unlikely event of having been preempted here. 3244 * in the unlikely event of having been preempted here.
1986 */ 3245 */
1987 for (i = 4; --i; ) 3246 for (i = 4; --i; )
1988 { 3247 {
3248 ev_tstamp diff;
1989 rtmn_diff = ev_rt_now - mn_now; 3249 rtmn_diff = ev_rt_now - mn_now;
1990 3250
3251 diff = odiff - rtmn_diff;
3252
1991 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3253 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1992 return; /* all is well */ 3254 return; /* all is well */
1993 3255
1994 ev_rt_now = ev_time (); 3256 ev_rt_now = ev_time ();
1995 mn_now = get_clock (); 3257 mn_now = get_clock ();
1996 now_floor = mn_now; 3258 now_floor = mn_now;
… …
2018 3280
2019 mn_now = ev_rt_now; 3281 mn_now = ev_rt_now;
2020 } 3282 }
2021} 3283}
2022 3284
2023static int loop_done; 3285int
2024
2025void
2026ev_loop (EV_P_ int flags) 3286ev_run (EV_P_ int flags)
2027{ 3287{
3288#if EV_FEATURE_API
3289 ++loop_depth;
3290#endif
3291
3292 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3293
2028 loop_done = EVUNLOOP_CANCEL; 3294 loop_done = EVBREAK_CANCEL;
2029 3295
2030 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3296 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2031 3297
2032 do 3298 do
2033 { 3299 {
2034#if EV_VERIFY >= 2 3300#if EV_VERIFY >= 2
2035 ev_loop_verify (EV_A); 3301 ev_verify (EV_A);
2036#endif 3302#endif
2037 3303
2038#ifndef _WIN32 3304#ifndef _WIN32
2039 if (expect_false (curpid)) /* penalise the forking check even more */ 3305 if (expect_false (curpid)) /* penalise the forking check even more */
2040 if (expect_false (getpid () != curpid)) 3306 if (expect_false (getpid () != curpid))
… …
2048 /* we might have forked, so queue fork handlers */ 3314 /* we might have forked, so queue fork handlers */
2049 if (expect_false (postfork)) 3315 if (expect_false (postfork))
2050 if (forkcnt) 3316 if (forkcnt)
2051 { 3317 {
2052 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3318 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2053 call_pending (EV_A); 3319 EV_INVOKE_PENDING;
2054 } 3320 }
2055#endif 3321#endif
2056 3322
3323#if EV_PREPARE_ENABLE
2057 /* queue prepare watchers (and execute them) */ 3324 /* queue prepare watchers (and execute them) */
2058 if (expect_false (preparecnt)) 3325 if (expect_false (preparecnt))
2059 { 3326 {
2060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3327 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2061 call_pending (EV_A); 3328 EV_INVOKE_PENDING;
2062 } 3329 }
3330#endif
3331
3332 if (expect_false (loop_done))
3333 break;
2063 3334
2064 /* we might have forked, so reify kernel state if necessary */ 3335 /* we might have forked, so reify kernel state if necessary */
2065 if (expect_false (postfork)) 3336 if (expect_false (postfork))
2066 loop_fork (EV_A); 3337 loop_fork (EV_A);
2067 3338
… …
2071 /* calculate blocking time */ 3342 /* calculate blocking time */
2072 { 3343 {
2073 ev_tstamp waittime = 0.; 3344 ev_tstamp waittime = 0.;
2074 ev_tstamp sleeptime = 0.; 3345 ev_tstamp sleeptime = 0.;
2075 3346
3347 /* remember old timestamp for io_blocktime calculation */
3348 ev_tstamp prev_mn_now = mn_now;
3349
3350 /* update time to cancel out callback processing overhead */
3351 time_update (EV_A_ 1e100);
3352
3353 /* from now on, we want a pipe-wake-up */
3354 pipe_write_wanted = 1;
3355
3356 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3357
2076 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3358 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2077 { 3359 {
2078 /* update time to cancel out callback processing overhead */
2079 time_update (EV_A_ 1e100);
2080
2081 waittime = MAX_BLOCKTIME; 3360 waittime = MAX_BLOCKTIME;
2082 3361
2083 if (timercnt) 3362 if (timercnt)
2084 { 3363 {
2085 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3364 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2086 if (waittime > to) waittime = to; 3365 if (waittime > to) waittime = to;
2087 } 3366 }
2088 3367
2089#if EV_PERIODIC_ENABLE 3368#if EV_PERIODIC_ENABLE
2090 if (periodiccnt) 3369 if (periodiccnt)
2091 { 3370 {
2092 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3371 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2093 if (waittime > to) waittime = to; 3372 if (waittime > to) waittime = to;
2094 } 3373 }
2095#endif 3374#endif
2096 3375
3376 /* don't let timeouts decrease the waittime below timeout_blocktime */
2097 if (expect_false (waittime < timeout_blocktime)) 3377 if (expect_false (waittime < timeout_blocktime))
2098 waittime = timeout_blocktime; 3378 waittime = timeout_blocktime;
2099 3379
2100 sleeptime = waittime - backend_fudge; 3380 /* at this point, we NEED to wait, so we have to ensure */
3381 /* to pass a minimum nonzero value to the backend */
3382 if (expect_false (waittime < backend_mintime))
3383 waittime = backend_mintime;
2101 3384
3385 /* extra check because io_blocktime is commonly 0 */
2102 if (expect_true (sleeptime > io_blocktime)) 3386 if (expect_false (io_blocktime))
2103 sleeptime = io_blocktime;
2104
2105 if (sleeptime)
2106 { 3387 {
3388 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3389
3390 if (sleeptime > waittime - backend_mintime)
3391 sleeptime = waittime - backend_mintime;
3392
3393 if (expect_true (sleeptime > 0.))
3394 {
2107 ev_sleep (sleeptime); 3395 ev_sleep (sleeptime);
2108 waittime -= sleeptime; 3396 waittime -= sleeptime;
3397 }
2109 } 3398 }
2110 } 3399 }
2111 3400
3401#if EV_FEATURE_API
2112 ++loop_count; 3402 ++loop_count;
3403#endif
3404 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2113 backend_poll (EV_A_ waittime); 3405 backend_poll (EV_A_ waittime);
3406 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3407
3408 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3409
3410 ECB_MEMORY_FENCE_ACQUIRE;
3411 if (pipe_write_skipped)
3412 {
3413 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3414 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3415 }
3416
2114 3417
2115 /* update ev_rt_now, do magic */ 3418 /* update ev_rt_now, do magic */
2116 time_update (EV_A_ waittime + sleeptime); 3419 time_update (EV_A_ waittime + sleeptime);
2117 } 3420 }
2118 3421
… …
2125#if EV_IDLE_ENABLE 3428#if EV_IDLE_ENABLE
2126 /* queue idle watchers unless other events are pending */ 3429 /* queue idle watchers unless other events are pending */
2127 idle_reify (EV_A); 3430 idle_reify (EV_A);
2128#endif 3431#endif
2129 3432
3433#if EV_CHECK_ENABLE
2130 /* queue check watchers, to be executed first */ 3434 /* queue check watchers, to be executed first */
2131 if (expect_false (checkcnt)) 3435 if (expect_false (checkcnt))
2132 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3436 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3437#endif
2133 3438
2134 call_pending (EV_A); 3439 EV_INVOKE_PENDING;
2135 } 3440 }
2136 while (expect_true ( 3441 while (expect_true (
2137 activecnt 3442 activecnt
2138 && !loop_done 3443 && !loop_done
2139 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3444 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2140 )); 3445 ));
2141 3446
2142 if (loop_done == EVUNLOOP_ONE) 3447 if (loop_done == EVBREAK_ONE)
2143 loop_done = EVUNLOOP_CANCEL; 3448 loop_done = EVBREAK_CANCEL;
3449
3450#if EV_FEATURE_API
3451 --loop_depth;
3452#endif
3453
3454 return activecnt;
2144} 3455}
2145 3456
2146void 3457void
2147ev_unloop (EV_P_ int how) 3458ev_break (EV_P_ int how) EV_THROW
2148{ 3459{
2149 loop_done = how; 3460 loop_done = how;
2150} 3461}
2151 3462
2152void 3463void
2153ev_ref (EV_P) 3464ev_ref (EV_P) EV_THROW
2154{ 3465{
2155 ++activecnt; 3466 ++activecnt;
2156} 3467}
2157 3468
2158void 3469void
2159ev_unref (EV_P) 3470ev_unref (EV_P) EV_THROW
2160{ 3471{
2161 --activecnt; 3472 --activecnt;
2162} 3473}
2163 3474
2164void 3475void
2165ev_now_update (EV_P) 3476ev_now_update (EV_P) EV_THROW
2166{ 3477{
2167 time_update (EV_A_ 1e100); 3478 time_update (EV_A_ 1e100);
2168} 3479}
2169 3480
2170void 3481void
2171ev_suspend (EV_P) 3482ev_suspend (EV_P) EV_THROW
2172{ 3483{
2173 ev_now_update (EV_A); 3484 ev_now_update (EV_A);
2174} 3485}
2175 3486
2176void 3487void
2177ev_resume (EV_P) 3488ev_resume (EV_P) EV_THROW
2178{ 3489{
2179 ev_tstamp mn_prev = mn_now; 3490 ev_tstamp mn_prev = mn_now;
2180 3491
2181 ev_now_update (EV_A); 3492 ev_now_update (EV_A);
2182 timers_reschedule (EV_A_ mn_now - mn_prev); 3493 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2199inline_size void 3510inline_size void
2200wlist_del (WL *head, WL elem) 3511wlist_del (WL *head, WL elem)
2201{ 3512{
2202 while (*head) 3513 while (*head)
2203 { 3514 {
2204 if (*head == elem) 3515 if (expect_true (*head == elem))
2205 { 3516 {
2206 *head = elem->next; 3517 *head = elem->next;
2207 return; 3518 break;
2208 } 3519 }
2209 3520
2210 head = &(*head)->next; 3521 head = &(*head)->next;
2211 } 3522 }
2212} 3523}
… …
2221 w->pending = 0; 3532 w->pending = 0;
2222 } 3533 }
2223} 3534}
2224 3535
2225int 3536int
2226ev_clear_pending (EV_P_ void *w) 3537ev_clear_pending (EV_P_ void *w) EV_THROW
2227{ 3538{
2228 W w_ = (W)w; 3539 W w_ = (W)w;
2229 int pending = w_->pending; 3540 int pending = w_->pending;
2230 3541
2231 if (expect_true (pending)) 3542 if (expect_true (pending))
… …
2240} 3551}
2241 3552
2242inline_size void 3553inline_size void
2243pri_adjust (EV_P_ W w) 3554pri_adjust (EV_P_ W w)
2244{ 3555{
2245 int pri = w->priority; 3556 int pri = ev_priority (w);
2246 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3557 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2247 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3558 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2248 w->priority = pri; 3559 ev_set_priority (w, pri);
2249} 3560}
2250 3561
2251inline_speed void 3562inline_speed void
2252ev_start (EV_P_ W w, int active) 3563ev_start (EV_P_ W w, int active)
2253{ 3564{
… …
2264} 3575}
2265 3576
2266/*****************************************************************************/ 3577/*****************************************************************************/
2267 3578
2268void noinline 3579void noinline
2269ev_io_start (EV_P_ ev_io *w) 3580ev_io_start (EV_P_ ev_io *w) EV_THROW
2270{ 3581{
2271 int fd = w->fd; 3582 int fd = w->fd;
2272 3583
2273 if (expect_false (ev_is_active (w))) 3584 if (expect_false (ev_is_active (w)))
2274 return; 3585 return;
2275 3586
2276 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3587 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2277 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3588 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2278 3589
2279 EV_FREQUENT_CHECK; 3590 EV_FREQUENT_CHECK;
2280 3591
2281 ev_start (EV_A_ (W)w, 1); 3592 ev_start (EV_A_ (W)w, 1);
2282 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3593 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2283 wlist_add (&anfds[fd].head, (WL)w); 3594 wlist_add (&anfds[fd].head, (WL)w);
2284 3595
3596 /* common bug, apparently */
3597 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3598
2285 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3599 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2286 w->events &= ~EV__IOFDSET; 3600 w->events &= ~EV__IOFDSET;
2287 3601
2288 EV_FREQUENT_CHECK; 3602 EV_FREQUENT_CHECK;
2289} 3603}
2290 3604
2291void noinline 3605void noinline
2292ev_io_stop (EV_P_ ev_io *w) 3606ev_io_stop (EV_P_ ev_io *w) EV_THROW
2293{ 3607{
2294 clear_pending (EV_A_ (W)w); 3608 clear_pending (EV_A_ (W)w);
2295 if (expect_false (!ev_is_active (w))) 3609 if (expect_false (!ev_is_active (w)))
2296 return; 3610 return;
2297 3611
… …
2300 EV_FREQUENT_CHECK; 3614 EV_FREQUENT_CHECK;
2301 3615
2302 wlist_del (&anfds[w->fd].head, (WL)w); 3616 wlist_del (&anfds[w->fd].head, (WL)w);
2303 ev_stop (EV_A_ (W)w); 3617 ev_stop (EV_A_ (W)w);
2304 3618
2305 fd_change (EV_A_ w->fd, 1); 3619 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2306 3620
2307 EV_FREQUENT_CHECK; 3621 EV_FREQUENT_CHECK;
2308} 3622}
2309 3623
2310void noinline 3624void noinline
2311ev_timer_start (EV_P_ ev_timer *w) 3625ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2312{ 3626{
2313 if (expect_false (ev_is_active (w))) 3627 if (expect_false (ev_is_active (w)))
2314 return; 3628 return;
2315 3629
2316 ev_at (w) += mn_now; 3630 ev_at (w) += mn_now;
… …
2330 3644
2331 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3645 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2332} 3646}
2333 3647
2334void noinline 3648void noinline
2335ev_timer_stop (EV_P_ ev_timer *w) 3649ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2336{ 3650{
2337 clear_pending (EV_A_ (W)w); 3651 clear_pending (EV_A_ (W)w);
2338 if (expect_false (!ev_is_active (w))) 3652 if (expect_false (!ev_is_active (w)))
2339 return; 3653 return;
2340 3654
… …
2352 timers [active] = timers [timercnt + HEAP0]; 3666 timers [active] = timers [timercnt + HEAP0];
2353 adjustheap (timers, timercnt, active); 3667 adjustheap (timers, timercnt, active);
2354 } 3668 }
2355 } 3669 }
2356 3670
2357 EV_FREQUENT_CHECK;
2358
2359 ev_at (w) -= mn_now; 3671 ev_at (w) -= mn_now;
2360 3672
2361 ev_stop (EV_A_ (W)w); 3673 ev_stop (EV_A_ (W)w);
3674
3675 EV_FREQUENT_CHECK;
2362} 3676}
2363 3677
2364void noinline 3678void noinline
2365ev_timer_again (EV_P_ ev_timer *w) 3679ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2366{ 3680{
2367 EV_FREQUENT_CHECK; 3681 EV_FREQUENT_CHECK;
3682
3683 clear_pending (EV_A_ (W)w);
2368 3684
2369 if (ev_is_active (w)) 3685 if (ev_is_active (w))
2370 { 3686 {
2371 if (w->repeat) 3687 if (w->repeat)
2372 { 3688 {
… …
2384 } 3700 }
2385 3701
2386 EV_FREQUENT_CHECK; 3702 EV_FREQUENT_CHECK;
2387} 3703}
2388 3704
3705ev_tstamp
3706ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3707{
3708 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3709}
3710
2389#if EV_PERIODIC_ENABLE 3711#if EV_PERIODIC_ENABLE
2390void noinline 3712void noinline
2391ev_periodic_start (EV_P_ ev_periodic *w) 3713ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2392{ 3714{
2393 if (expect_false (ev_is_active (w))) 3715 if (expect_false (ev_is_active (w)))
2394 return; 3716 return;
2395 3717
2396 if (w->reschedule_cb) 3718 if (w->reschedule_cb)
2397 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3719 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2398 else if (w->interval) 3720 else if (w->interval)
2399 { 3721 {
2400 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3722 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2401 /* this formula differs from the one in periodic_reify because we do not always round up */ 3723 periodic_recalc (EV_A_ w);
2402 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2403 } 3724 }
2404 else 3725 else
2405 ev_at (w) = w->offset; 3726 ev_at (w) = w->offset;
2406 3727
2407 EV_FREQUENT_CHECK; 3728 EV_FREQUENT_CHECK;
… …
2417 3738
2418 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3739 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2419} 3740}
2420 3741
2421void noinline 3742void noinline
2422ev_periodic_stop (EV_P_ ev_periodic *w) 3743ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2423{ 3744{
2424 clear_pending (EV_A_ (W)w); 3745 clear_pending (EV_A_ (W)w);
2425 if (expect_false (!ev_is_active (w))) 3746 if (expect_false (!ev_is_active (w)))
2426 return; 3747 return;
2427 3748
… …
2439 periodics [active] = periodics [periodiccnt + HEAP0]; 3760 periodics [active] = periodics [periodiccnt + HEAP0];
2440 adjustheap (periodics, periodiccnt, active); 3761 adjustheap (periodics, periodiccnt, active);
2441 } 3762 }
2442 } 3763 }
2443 3764
2444 EV_FREQUENT_CHECK;
2445
2446 ev_stop (EV_A_ (W)w); 3765 ev_stop (EV_A_ (W)w);
3766
3767 EV_FREQUENT_CHECK;
2447} 3768}
2448 3769
2449void noinline 3770void noinline
2450ev_periodic_again (EV_P_ ev_periodic *w) 3771ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2451{ 3772{
2452 /* TODO: use adjustheap and recalculation */ 3773 /* TODO: use adjustheap and recalculation */
2453 ev_periodic_stop (EV_A_ w); 3774 ev_periodic_stop (EV_A_ w);
2454 ev_periodic_start (EV_A_ w); 3775 ev_periodic_start (EV_A_ w);
2455} 3776}
… …
2457 3778
2458#ifndef SA_RESTART 3779#ifndef SA_RESTART
2459# define SA_RESTART 0 3780# define SA_RESTART 0
2460#endif 3781#endif
2461 3782
3783#if EV_SIGNAL_ENABLE
3784
2462void noinline 3785void noinline
2463ev_signal_start (EV_P_ ev_signal *w) 3786ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2464{ 3787{
2465#if EV_MULTIPLICITY
2466 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2467#endif
2468 if (expect_false (ev_is_active (w))) 3788 if (expect_false (ev_is_active (w)))
2469 return; 3789 return;
2470 3790
2471 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3791 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2472 3792
2473 evpipe_init (EV_A); 3793#if EV_MULTIPLICITY
3794 assert (("libev: a signal must not be attached to two different loops",
3795 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2474 3796
2475 EV_FREQUENT_CHECK; 3797 signals [w->signum - 1].loop = EV_A;
3798 ECB_MEMORY_FENCE_RELEASE;
3799#endif
2476 3800
3801 EV_FREQUENT_CHECK;
3802
3803#if EV_USE_SIGNALFD
3804 if (sigfd == -2)
2477 { 3805 {
2478#ifndef _WIN32 3806 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2479 sigset_t full, prev; 3807 if (sigfd < 0 && errno == EINVAL)
2480 sigfillset (&full); 3808 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2481 sigprocmask (SIG_SETMASK, &full, &prev);
2482#endif
2483 3809
2484 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3810 if (sigfd >= 0)
3811 {
3812 fd_intern (sigfd); /* doing it twice will not hurt */
2485 3813
2486#ifndef _WIN32 3814 sigemptyset (&sigfd_set);
2487 sigprocmask (SIG_SETMASK, &prev, 0); 3815
2488#endif 3816 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3817 ev_set_priority (&sigfd_w, EV_MAXPRI);
3818 ev_io_start (EV_A_ &sigfd_w);
3819 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3820 }
2489 } 3821 }
3822
3823 if (sigfd >= 0)
3824 {
3825 /* TODO: check .head */
3826 sigaddset (&sigfd_set, w->signum);
3827 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3828
3829 signalfd (sigfd, &sigfd_set, 0);
3830 }
3831#endif
2490 3832
2491 ev_start (EV_A_ (W)w, 1); 3833 ev_start (EV_A_ (W)w, 1);
2492 wlist_add (&signals [w->signum - 1].head, (WL)w); 3834 wlist_add (&signals [w->signum - 1].head, (WL)w);
2493 3835
2494 if (!((WL)w)->next) 3836 if (!((WL)w)->next)
3837# if EV_USE_SIGNALFD
3838 if (sigfd < 0) /*TODO*/
3839# endif
2495 { 3840 {
2496#if _WIN32 3841# ifdef _WIN32
3842 evpipe_init (EV_A);
3843
2497 signal (w->signum, ev_sighandler); 3844 signal (w->signum, ev_sighandler);
2498#else 3845# else
2499 struct sigaction sa; 3846 struct sigaction sa;
3847
3848 evpipe_init (EV_A);
3849
2500 sa.sa_handler = ev_sighandler; 3850 sa.sa_handler = ev_sighandler;
2501 sigfillset (&sa.sa_mask); 3851 sigfillset (&sa.sa_mask);
2502 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3852 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2503 sigaction (w->signum, &sa, 0); 3853 sigaction (w->signum, &sa, 0);
3854
3855 if (origflags & EVFLAG_NOSIGMASK)
3856 {
3857 sigemptyset (&sa.sa_mask);
3858 sigaddset (&sa.sa_mask, w->signum);
3859 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3860 }
2504#endif 3861#endif
2505 } 3862 }
2506 3863
2507 EV_FREQUENT_CHECK; 3864 EV_FREQUENT_CHECK;
2508} 3865}
2509 3866
2510void noinline 3867void noinline
2511ev_signal_stop (EV_P_ ev_signal *w) 3868ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2512{ 3869{
2513 clear_pending (EV_A_ (W)w); 3870 clear_pending (EV_A_ (W)w);
2514 if (expect_false (!ev_is_active (w))) 3871 if (expect_false (!ev_is_active (w)))
2515 return; 3872 return;
2516 3873
… …
2518 3875
2519 wlist_del (&signals [w->signum - 1].head, (WL)w); 3876 wlist_del (&signals [w->signum - 1].head, (WL)w);
2520 ev_stop (EV_A_ (W)w); 3877 ev_stop (EV_A_ (W)w);
2521 3878
2522 if (!signals [w->signum - 1].head) 3879 if (!signals [w->signum - 1].head)
3880 {
3881#if EV_MULTIPLICITY
3882 signals [w->signum - 1].loop = 0; /* unattach from signal */
3883#endif
3884#if EV_USE_SIGNALFD
3885 if (sigfd >= 0)
3886 {
3887 sigset_t ss;
3888
3889 sigemptyset (&ss);
3890 sigaddset (&ss, w->signum);
3891 sigdelset (&sigfd_set, w->signum);
3892
3893 signalfd (sigfd, &sigfd_set, 0);
3894 sigprocmask (SIG_UNBLOCK, &ss, 0);
3895 }
3896 else
3897#endif
2523 signal (w->signum, SIG_DFL); 3898 signal (w->signum, SIG_DFL);
3899 }
2524 3900
2525 EV_FREQUENT_CHECK; 3901 EV_FREQUENT_CHECK;
2526} 3902}
3903
3904#endif
3905
3906#if EV_CHILD_ENABLE
2527 3907
2528void 3908void
2529ev_child_start (EV_P_ ev_child *w) 3909ev_child_start (EV_P_ ev_child *w) EV_THROW
2530{ 3910{
2531#if EV_MULTIPLICITY 3911#if EV_MULTIPLICITY
2532 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3912 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2533#endif 3913#endif
2534 if (expect_false (ev_is_active (w))) 3914 if (expect_false (ev_is_active (w)))
2535 return; 3915 return;
2536 3916
2537 EV_FREQUENT_CHECK; 3917 EV_FREQUENT_CHECK;
2538 3918
2539 ev_start (EV_A_ (W)w, 1); 3919 ev_start (EV_A_ (W)w, 1);
2540 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3920 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2541 3921
2542 EV_FREQUENT_CHECK; 3922 EV_FREQUENT_CHECK;
2543} 3923}
2544 3924
2545void 3925void
2546ev_child_stop (EV_P_ ev_child *w) 3926ev_child_stop (EV_P_ ev_child *w) EV_THROW
2547{ 3927{
2548 clear_pending (EV_A_ (W)w); 3928 clear_pending (EV_A_ (W)w);
2549 if (expect_false (!ev_is_active (w))) 3929 if (expect_false (!ev_is_active (w)))
2550 return; 3930 return;
2551 3931
2552 EV_FREQUENT_CHECK; 3932 EV_FREQUENT_CHECK;
2553 3933
2554 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3934 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2555 ev_stop (EV_A_ (W)w); 3935 ev_stop (EV_A_ (W)w);
2556 3936
2557 EV_FREQUENT_CHECK; 3937 EV_FREQUENT_CHECK;
2558} 3938}
3939
3940#endif
2559 3941
2560#if EV_STAT_ENABLE 3942#if EV_STAT_ENABLE
2561 3943
2562# ifdef _WIN32 3944# ifdef _WIN32
2563# undef lstat 3945# undef lstat
… …
2569#define MIN_STAT_INTERVAL 0.1074891 3951#define MIN_STAT_INTERVAL 0.1074891
2570 3952
2571static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3953static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2572 3954
2573#if EV_USE_INOTIFY 3955#if EV_USE_INOTIFY
2574# define EV_INOTIFY_BUFSIZE 8192 3956
3957/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3958# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2575 3959
2576static void noinline 3960static void noinline
2577infy_add (EV_P_ ev_stat *w) 3961infy_add (EV_P_ ev_stat *w)
2578{ 3962{
2579 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); 3963 w->wd = inotify_add_watch (fs_fd, w->path,
3964 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3965 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3966 | IN_DONT_FOLLOW | IN_MASK_ADD);
2580 3967
2581 if (w->wd < 0) 3968 if (w->wd >= 0)
3969 {
3970 struct statfs sfs;
3971
3972 /* now local changes will be tracked by inotify, but remote changes won't */
3973 /* unless the filesystem is known to be local, we therefore still poll */
3974 /* also do poll on <2.6.25, but with normal frequency */
3975
3976 if (!fs_2625)
3977 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3978 else if (!statfs (w->path, &sfs)
3979 && (sfs.f_type == 0x1373 /* devfs */
3980 || sfs.f_type == 0x4006 /* fat */
3981 || sfs.f_type == 0x4d44 /* msdos */
3982 || sfs.f_type == 0xEF53 /* ext2/3 */
3983 || sfs.f_type == 0x72b6 /* jffs2 */
3984 || sfs.f_type == 0x858458f6 /* ramfs */
3985 || sfs.f_type == 0x5346544e /* ntfs */
3986 || sfs.f_type == 0x3153464a /* jfs */
3987 || sfs.f_type == 0x9123683e /* btrfs */
3988 || sfs.f_type == 0x52654973 /* reiser3 */
3989 || sfs.f_type == 0x01021994 /* tmpfs */
3990 || sfs.f_type == 0x58465342 /* xfs */))
3991 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3992 else
3993 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2582 { 3994 }
3995 else
3996 {
3997 /* can't use inotify, continue to stat */
2583 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3998 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2584 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2585 3999
2586 /* monitor some parent directory for speedup hints */ 4000 /* if path is not there, monitor some parent directory for speedup hints */
2587 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4001 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2588 /* but an efficiency issue only */ 4002 /* but an efficiency issue only */
2589 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4003 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2590 { 4004 {
2591 char path [4096]; 4005 char path [4096];
… …
2601 if (!pend || pend == path) 4015 if (!pend || pend == path)
2602 break; 4016 break;
2603 4017
2604 *pend = 0; 4018 *pend = 0;
2605 w->wd = inotify_add_watch (fs_fd, path, mask); 4019 w->wd = inotify_add_watch (fs_fd, path, mask);
2606 } 4020 }
2607 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4021 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2608 } 4022 }
2609 } 4023 }
2610 4024
2611 if (w->wd >= 0) 4025 if (w->wd >= 0)
2612 {
2613 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4026 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2614 4027
2615 /* now local changes will be tracked by inotify, but remote changes won't */ 4028 /* now re-arm timer, if required */
2616 /* unless the filesystem it known to be local, we therefore still poll */ 4029 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2617 /* also do poll on <2.6.25, but with normal frequency */
2618 struct statfs sfs;
2619
2620 if (fs_2625 && !statfs (w->path, &sfs))
2621 if (sfs.f_type == 0x1373 /* devfs */
2622 || sfs.f_type == 0xEF53 /* ext2/3 */
2623 || sfs.f_type == 0x3153464a /* jfs */
2624 || sfs.f_type == 0x52654973 /* reiser3 */
2625 || sfs.f_type == 0x01021994 /* tempfs */
2626 || sfs.f_type == 0x58465342 /* xfs */)
2627 return;
2628
2629 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2630 ev_timer_again (EV_A_ &w->timer); 4030 ev_timer_again (EV_A_ &w->timer);
2631 } 4031 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2632} 4032}
2633 4033
2634static void noinline 4034static void noinline
2635infy_del (EV_P_ ev_stat *w) 4035infy_del (EV_P_ ev_stat *w)
2636{ 4036{
… …
2639 4039
2640 if (wd < 0) 4040 if (wd < 0)
2641 return; 4041 return;
2642 4042
2643 w->wd = -2; 4043 w->wd = -2;
2644 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4044 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2645 wlist_del (&fs_hash [slot].head, (WL)w); 4045 wlist_del (&fs_hash [slot].head, (WL)w);
2646 4046
2647 /* remove this watcher, if others are watching it, they will rearm */ 4047 /* remove this watcher, if others are watching it, they will rearm */
2648 inotify_rm_watch (fs_fd, wd); 4048 inotify_rm_watch (fs_fd, wd);
2649} 4049}
… …
2651static void noinline 4051static void noinline
2652infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4052infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2653{ 4053{
2654 if (slot < 0) 4054 if (slot < 0)
2655 /* overflow, need to check for all hash slots */ 4055 /* overflow, need to check for all hash slots */
2656 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4056 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2657 infy_wd (EV_A_ slot, wd, ev); 4057 infy_wd (EV_A_ slot, wd, ev);
2658 else 4058 else
2659 { 4059 {
2660 WL w_; 4060 WL w_;
2661 4061
2662 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4062 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2663 { 4063 {
2664 ev_stat *w = (ev_stat *)w_; 4064 ev_stat *w = (ev_stat *)w_;
2665 w_ = w_->next; /* lets us remove this watcher and all before it */ 4065 w_ = w_->next; /* lets us remove this watcher and all before it */
2666 4066
2667 if (w->wd == wd || wd == -1) 4067 if (w->wd == wd || wd == -1)
2668 { 4068 {
2669 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4069 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2670 { 4070 {
2671 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4071 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2672 w->wd = -1; 4072 w->wd = -1;
2673 infy_add (EV_A_ w); /* re-add, no matter what */ 4073 infy_add (EV_A_ w); /* re-add, no matter what */
2674 } 4074 }
2675 4075
2676 stat_timer_cb (EV_A_ &w->timer, 0); 4076 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2681 4081
2682static void 4082static void
2683infy_cb (EV_P_ ev_io *w, int revents) 4083infy_cb (EV_P_ ev_io *w, int revents)
2684{ 4084{
2685 char buf [EV_INOTIFY_BUFSIZE]; 4085 char buf [EV_INOTIFY_BUFSIZE];
2686 struct inotify_event *ev = (struct inotify_event *)buf;
2687 int ofs; 4086 int ofs;
2688 int len = read (fs_fd, buf, sizeof (buf)); 4087 int len = read (fs_fd, buf, sizeof (buf));
2689 4088
2690 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4089 for (ofs = 0; ofs < len; )
4090 {
4091 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2691 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4092 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4093 ofs += sizeof (struct inotify_event) + ev->len;
4094 }
2692} 4095}
2693 4096
2694inline_size void 4097inline_size void ecb_cold
2695check_2625 (EV_P) 4098ev_check_2625 (EV_P)
2696{ 4099{
2697 /* kernels < 2.6.25 are borked 4100 /* kernels < 2.6.25 are borked
2698 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4101 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2699 */ 4102 */
2700 struct utsname buf; 4103 if (ev_linux_version () < 0x020619)
2701 int major, minor, micro;
2702
2703 if (uname (&buf))
2704 return; 4104 return;
2705 4105
2706 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2707 return;
2708
2709 if (major < 2
2710 || (major == 2 && minor < 6)
2711 || (major == 2 && minor == 6 && micro < 25))
2712 return;
2713
2714 fs_2625 = 1; 4106 fs_2625 = 1;
4107}
4108
4109inline_size int
4110infy_newfd (void)
4111{
4112#if defined IN_CLOEXEC && defined IN_NONBLOCK
4113 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4114 if (fd >= 0)
4115 return fd;
4116#endif
4117 return inotify_init ();
2715} 4118}
2716 4119
2717inline_size void 4120inline_size void
2718infy_init (EV_P) 4121infy_init (EV_P)
2719{ 4122{
2720 if (fs_fd != -2) 4123 if (fs_fd != -2)
2721 return; 4124 return;
2722 4125
2723 fs_fd = -1; 4126 fs_fd = -1;
2724 4127
2725 check_2625 (EV_A); 4128 ev_check_2625 (EV_A);
2726 4129
2727 fs_fd = inotify_init (); 4130 fs_fd = infy_newfd ();
2728 4131
2729 if (fs_fd >= 0) 4132 if (fs_fd >= 0)
2730 { 4133 {
4134 fd_intern (fs_fd);
2731 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4135 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2732 ev_set_priority (&fs_w, EV_MAXPRI); 4136 ev_set_priority (&fs_w, EV_MAXPRI);
2733 ev_io_start (EV_A_ &fs_w); 4137 ev_io_start (EV_A_ &fs_w);
4138 ev_unref (EV_A);
2734 } 4139 }
2735} 4140}
2736 4141
2737inline_size void 4142inline_size void
2738infy_fork (EV_P) 4143infy_fork (EV_P)
… …
2740 int slot; 4145 int slot;
2741 4146
2742 if (fs_fd < 0) 4147 if (fs_fd < 0)
2743 return; 4148 return;
2744 4149
4150 ev_ref (EV_A);
4151 ev_io_stop (EV_A_ &fs_w);
2745 close (fs_fd); 4152 close (fs_fd);
2746 fs_fd = inotify_init (); 4153 fs_fd = infy_newfd ();
2747 4154
4155 if (fs_fd >= 0)
4156 {
4157 fd_intern (fs_fd);
4158 ev_io_set (&fs_w, fs_fd, EV_READ);
4159 ev_io_start (EV_A_ &fs_w);
4160 ev_unref (EV_A);
4161 }
4162
2748 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4163 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2749 { 4164 {
2750 WL w_ = fs_hash [slot].head; 4165 WL w_ = fs_hash [slot].head;
2751 fs_hash [slot].head = 0; 4166 fs_hash [slot].head = 0;
2752 4167
2753 while (w_) 4168 while (w_)
… …
2758 w->wd = -1; 4173 w->wd = -1;
2759 4174
2760 if (fs_fd >= 0) 4175 if (fs_fd >= 0)
2761 infy_add (EV_A_ w); /* re-add, no matter what */ 4176 infy_add (EV_A_ w); /* re-add, no matter what */
2762 else 4177 else
4178 {
4179 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4180 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2763 ev_timer_again (EV_A_ &w->timer); 4181 ev_timer_again (EV_A_ &w->timer);
4182 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4183 }
2764 } 4184 }
2765 } 4185 }
2766} 4186}
2767 4187
2768#endif 4188#endif
… …
2772#else 4192#else
2773# define EV_LSTAT(p,b) lstat (p, b) 4193# define EV_LSTAT(p,b) lstat (p, b)
2774#endif 4194#endif
2775 4195
2776void 4196void
2777ev_stat_stat (EV_P_ ev_stat *w) 4197ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2778{ 4198{
2779 if (lstat (w->path, &w->attr) < 0) 4199 if (lstat (w->path, &w->attr) < 0)
2780 w->attr.st_nlink = 0; 4200 w->attr.st_nlink = 0;
2781 else if (!w->attr.st_nlink) 4201 else if (!w->attr.st_nlink)
2782 w->attr.st_nlink = 1; 4202 w->attr.st_nlink = 1;
… …
2785static void noinline 4205static void noinline
2786stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4206stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2787{ 4207{
2788 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4208 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2789 4209
2790 /* we copy this here each the time so that */ 4210 ev_statdata prev = w->attr;
2791 /* prev has the old value when the callback gets invoked */
2792 w->prev = w->attr;
2793 ev_stat_stat (EV_A_ w); 4211 ev_stat_stat (EV_A_ w);
2794 4212
2795 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4213 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2796 if ( 4214 if (
2797 w->prev.st_dev != w->attr.st_dev 4215 prev.st_dev != w->attr.st_dev
2798 || w->prev.st_ino != w->attr.st_ino 4216 || prev.st_ino != w->attr.st_ino
2799 || w->prev.st_mode != w->attr.st_mode 4217 || prev.st_mode != w->attr.st_mode
2800 || w->prev.st_nlink != w->attr.st_nlink 4218 || prev.st_nlink != w->attr.st_nlink
2801 || w->prev.st_uid != w->attr.st_uid 4219 || prev.st_uid != w->attr.st_uid
2802 || w->prev.st_gid != w->attr.st_gid 4220 || prev.st_gid != w->attr.st_gid
2803 || w->prev.st_rdev != w->attr.st_rdev 4221 || prev.st_rdev != w->attr.st_rdev
2804 || w->prev.st_size != w->attr.st_size 4222 || prev.st_size != w->attr.st_size
2805 || w->prev.st_atime != w->attr.st_atime 4223 || prev.st_atime != w->attr.st_atime
2806 || w->prev.st_mtime != w->attr.st_mtime 4224 || prev.st_mtime != w->attr.st_mtime
2807 || w->prev.st_ctime != w->attr.st_ctime 4225 || prev.st_ctime != w->attr.st_ctime
2808 ) { 4226 ) {
4227 /* we only update w->prev on actual differences */
4228 /* in case we test more often than invoke the callback, */
4229 /* to ensure that prev is always different to attr */
4230 w->prev = prev;
4231
2809 #if EV_USE_INOTIFY 4232 #if EV_USE_INOTIFY
2810 if (fs_fd >= 0) 4233 if (fs_fd >= 0)
2811 { 4234 {
2812 infy_del (EV_A_ w); 4235 infy_del (EV_A_ w);
2813 infy_add (EV_A_ w); 4236 infy_add (EV_A_ w);
… …
2818 ev_feed_event (EV_A_ w, EV_STAT); 4241 ev_feed_event (EV_A_ w, EV_STAT);
2819 } 4242 }
2820} 4243}
2821 4244
2822void 4245void
2823ev_stat_start (EV_P_ ev_stat *w) 4246ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2824{ 4247{
2825 if (expect_false (ev_is_active (w))) 4248 if (expect_false (ev_is_active (w)))
2826 return; 4249 return;
2827 4250
2828 ev_stat_stat (EV_A_ w); 4251 ev_stat_stat (EV_A_ w);
… …
2838 4261
2839 if (fs_fd >= 0) 4262 if (fs_fd >= 0)
2840 infy_add (EV_A_ w); 4263 infy_add (EV_A_ w);
2841 else 4264 else
2842#endif 4265#endif
4266 {
2843 ev_timer_again (EV_A_ &w->timer); 4267 ev_timer_again (EV_A_ &w->timer);
4268 ev_unref (EV_A);
4269 }
2844 4270
2845 ev_start (EV_A_ (W)w, 1); 4271 ev_start (EV_A_ (W)w, 1);
2846 4272
2847 EV_FREQUENT_CHECK; 4273 EV_FREQUENT_CHECK;
2848} 4274}
2849 4275
2850void 4276void
2851ev_stat_stop (EV_P_ ev_stat *w) 4277ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2852{ 4278{
2853 clear_pending (EV_A_ (W)w); 4279 clear_pending (EV_A_ (W)w);
2854 if (expect_false (!ev_is_active (w))) 4280 if (expect_false (!ev_is_active (w)))
2855 return; 4281 return;
2856 4282
2857 EV_FREQUENT_CHECK; 4283 EV_FREQUENT_CHECK;
2858 4284
2859#if EV_USE_INOTIFY 4285#if EV_USE_INOTIFY
2860 infy_del (EV_A_ w); 4286 infy_del (EV_A_ w);
2861#endif 4287#endif
4288
4289 if (ev_is_active (&w->timer))
4290 {
4291 ev_ref (EV_A);
2862 ev_timer_stop (EV_A_ &w->timer); 4292 ev_timer_stop (EV_A_ &w->timer);
4293 }
2863 4294
2864 ev_stop (EV_A_ (W)w); 4295 ev_stop (EV_A_ (W)w);
2865 4296
2866 EV_FREQUENT_CHECK; 4297 EV_FREQUENT_CHECK;
2867} 4298}
2868#endif 4299#endif
2869 4300
2870#if EV_IDLE_ENABLE 4301#if EV_IDLE_ENABLE
2871void 4302void
2872ev_idle_start (EV_P_ ev_idle *w) 4303ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2873{ 4304{
2874 if (expect_false (ev_is_active (w))) 4305 if (expect_false (ev_is_active (w)))
2875 return; 4306 return;
2876 4307
2877 pri_adjust (EV_A_ (W)w); 4308 pri_adjust (EV_A_ (W)w);
… …
2890 4321
2891 EV_FREQUENT_CHECK; 4322 EV_FREQUENT_CHECK;
2892} 4323}
2893 4324
2894void 4325void
2895ev_idle_stop (EV_P_ ev_idle *w) 4326ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2896{ 4327{
2897 clear_pending (EV_A_ (W)w); 4328 clear_pending (EV_A_ (W)w);
2898 if (expect_false (!ev_is_active (w))) 4329 if (expect_false (!ev_is_active (w)))
2899 return; 4330 return;
2900 4331
… …
2912 4343
2913 EV_FREQUENT_CHECK; 4344 EV_FREQUENT_CHECK;
2914} 4345}
2915#endif 4346#endif
2916 4347
4348#if EV_PREPARE_ENABLE
2917void 4349void
2918ev_prepare_start (EV_P_ ev_prepare *w) 4350ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2919{ 4351{
2920 if (expect_false (ev_is_active (w))) 4352 if (expect_false (ev_is_active (w)))
2921 return; 4353 return;
2922 4354
2923 EV_FREQUENT_CHECK; 4355 EV_FREQUENT_CHECK;
… …
2928 4360
2929 EV_FREQUENT_CHECK; 4361 EV_FREQUENT_CHECK;
2930} 4362}
2931 4363
2932void 4364void
2933ev_prepare_stop (EV_P_ ev_prepare *w) 4365ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2934{ 4366{
2935 clear_pending (EV_A_ (W)w); 4367 clear_pending (EV_A_ (W)w);
2936 if (expect_false (!ev_is_active (w))) 4368 if (expect_false (!ev_is_active (w)))
2937 return; 4369 return;
2938 4370
… …
2947 4379
2948 ev_stop (EV_A_ (W)w); 4380 ev_stop (EV_A_ (W)w);
2949 4381
2950 EV_FREQUENT_CHECK; 4382 EV_FREQUENT_CHECK;
2951} 4383}
4384#endif
2952 4385
4386#if EV_CHECK_ENABLE
2953void 4387void
2954ev_check_start (EV_P_ ev_check *w) 4388ev_check_start (EV_P_ ev_check *w) EV_THROW
2955{ 4389{
2956 if (expect_false (ev_is_active (w))) 4390 if (expect_false (ev_is_active (w)))
2957 return; 4391 return;
2958 4392
2959 EV_FREQUENT_CHECK; 4393 EV_FREQUENT_CHECK;
… …
2964 4398
2965 EV_FREQUENT_CHECK; 4399 EV_FREQUENT_CHECK;
2966} 4400}
2967 4401
2968void 4402void
2969ev_check_stop (EV_P_ ev_check *w) 4403ev_check_stop (EV_P_ ev_check *w) EV_THROW
2970{ 4404{
2971 clear_pending (EV_A_ (W)w); 4405 clear_pending (EV_A_ (W)w);
2972 if (expect_false (!ev_is_active (w))) 4406 if (expect_false (!ev_is_active (w)))
2973 return; 4407 return;
2974 4408
… …
2983 4417
2984 ev_stop (EV_A_ (W)w); 4418 ev_stop (EV_A_ (W)w);
2985 4419
2986 EV_FREQUENT_CHECK; 4420 EV_FREQUENT_CHECK;
2987} 4421}
4422#endif
2988 4423
2989#if EV_EMBED_ENABLE 4424#if EV_EMBED_ENABLE
2990void noinline 4425void noinline
2991ev_embed_sweep (EV_P_ ev_embed *w) 4426ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2992{ 4427{
2993 ev_loop (w->other, EVLOOP_NONBLOCK); 4428 ev_run (w->other, EVRUN_NOWAIT);
2994} 4429}
2995 4430
2996static void 4431static void
2997embed_io_cb (EV_P_ ev_io *io, int revents) 4432embed_io_cb (EV_P_ ev_io *io, int revents)
2998{ 4433{
2999 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4434 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3000 4435
3001 if (ev_cb (w)) 4436 if (ev_cb (w))
3002 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4437 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3003 else 4438 else
3004 ev_loop (w->other, EVLOOP_NONBLOCK); 4439 ev_run (w->other, EVRUN_NOWAIT);
3005} 4440}
3006 4441
3007static void 4442static void
3008embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4443embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3009{ 4444{
3010 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4445 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3011 4446
3012 { 4447 {
3013 struct ev_loop *loop = w->other; 4448 EV_P = w->other;
3014 4449
3015 while (fdchangecnt) 4450 while (fdchangecnt)
3016 { 4451 {
3017 fd_reify (EV_A); 4452 fd_reify (EV_A);
3018 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4453 ev_run (EV_A_ EVRUN_NOWAIT);
3019 } 4454 }
3020 } 4455 }
3021} 4456}
3022 4457
3023static void 4458static void
… …
3026 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4461 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3027 4462
3028 ev_embed_stop (EV_A_ w); 4463 ev_embed_stop (EV_A_ w);
3029 4464
3030 { 4465 {
3031 struct ev_loop *loop = w->other; 4466 EV_P = w->other;
3032 4467
3033 ev_loop_fork (EV_A); 4468 ev_loop_fork (EV_A);
3034 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4469 ev_run (EV_A_ EVRUN_NOWAIT);
3035 } 4470 }
3036 4471
3037 ev_embed_start (EV_A_ w); 4472 ev_embed_start (EV_A_ w);
3038} 4473}
3039 4474
… …
3044 ev_idle_stop (EV_A_ idle); 4479 ev_idle_stop (EV_A_ idle);
3045} 4480}
3046#endif 4481#endif
3047 4482
3048void 4483void
3049ev_embed_start (EV_P_ ev_embed *w) 4484ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3050{ 4485{
3051 if (expect_false (ev_is_active (w))) 4486 if (expect_false (ev_is_active (w)))
3052 return; 4487 return;
3053 4488
3054 { 4489 {
3055 struct ev_loop *loop = w->other; 4490 EV_P = w->other;
3056 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4491 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3057 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4492 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3058 } 4493 }
3059 4494
3060 EV_FREQUENT_CHECK; 4495 EV_FREQUENT_CHECK;
… …
3075 4510
3076 EV_FREQUENT_CHECK; 4511 EV_FREQUENT_CHECK;
3077} 4512}
3078 4513
3079void 4514void
3080ev_embed_stop (EV_P_ ev_embed *w) 4515ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3081{ 4516{
3082 clear_pending (EV_A_ (W)w); 4517 clear_pending (EV_A_ (W)w);
3083 if (expect_false (!ev_is_active (w))) 4518 if (expect_false (!ev_is_active (w)))
3084 return; 4519 return;
3085 4520
… …
3087 4522
3088 ev_io_stop (EV_A_ &w->io); 4523 ev_io_stop (EV_A_ &w->io);
3089 ev_prepare_stop (EV_A_ &w->prepare); 4524 ev_prepare_stop (EV_A_ &w->prepare);
3090 ev_fork_stop (EV_A_ &w->fork); 4525 ev_fork_stop (EV_A_ &w->fork);
3091 4526
4527 ev_stop (EV_A_ (W)w);
4528
3092 EV_FREQUENT_CHECK; 4529 EV_FREQUENT_CHECK;
3093} 4530}
3094#endif 4531#endif
3095 4532
3096#if EV_FORK_ENABLE 4533#if EV_FORK_ENABLE
3097void 4534void
3098ev_fork_start (EV_P_ ev_fork *w) 4535ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3099{ 4536{
3100 if (expect_false (ev_is_active (w))) 4537 if (expect_false (ev_is_active (w)))
3101 return; 4538 return;
3102 4539
3103 EV_FREQUENT_CHECK; 4540 EV_FREQUENT_CHECK;
… …
3108 4545
3109 EV_FREQUENT_CHECK; 4546 EV_FREQUENT_CHECK;
3110} 4547}
3111 4548
3112void 4549void
3113ev_fork_stop (EV_P_ ev_fork *w) 4550ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3114{ 4551{
3115 clear_pending (EV_A_ (W)w); 4552 clear_pending (EV_A_ (W)w);
3116 if (expect_false (!ev_is_active (w))) 4553 if (expect_false (!ev_is_active (w)))
3117 return; 4554 return;
3118 4555
… …
3129 4566
3130 EV_FREQUENT_CHECK; 4567 EV_FREQUENT_CHECK;
3131} 4568}
3132#endif 4569#endif
3133 4570
4571#if EV_CLEANUP_ENABLE
4572void
4573ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4574{
4575 if (expect_false (ev_is_active (w)))
4576 return;
4577
4578 EV_FREQUENT_CHECK;
4579
4580 ev_start (EV_A_ (W)w, ++cleanupcnt);
4581 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4582 cleanups [cleanupcnt - 1] = w;
4583
4584 /* cleanup watchers should never keep a refcount on the loop */
4585 ev_unref (EV_A);
4586 EV_FREQUENT_CHECK;
4587}
4588
4589void
4590ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4591{
4592 clear_pending (EV_A_ (W)w);
4593 if (expect_false (!ev_is_active (w)))
4594 return;
4595
4596 EV_FREQUENT_CHECK;
4597 ev_ref (EV_A);
4598
4599 {
4600 int active = ev_active (w);
4601
4602 cleanups [active - 1] = cleanups [--cleanupcnt];
4603 ev_active (cleanups [active - 1]) = active;
4604 }
4605
4606 ev_stop (EV_A_ (W)w);
4607
4608 EV_FREQUENT_CHECK;
4609}
4610#endif
4611
3134#if EV_ASYNC_ENABLE 4612#if EV_ASYNC_ENABLE
3135void 4613void
3136ev_async_start (EV_P_ ev_async *w) 4614ev_async_start (EV_P_ ev_async *w) EV_THROW
3137{ 4615{
3138 if (expect_false (ev_is_active (w))) 4616 if (expect_false (ev_is_active (w)))
3139 return; 4617 return;
4618
4619 w->sent = 0;
3140 4620
3141 evpipe_init (EV_A); 4621 evpipe_init (EV_A);
3142 4622
3143 EV_FREQUENT_CHECK; 4623 EV_FREQUENT_CHECK;
3144 4624
… …
3148 4628
3149 EV_FREQUENT_CHECK; 4629 EV_FREQUENT_CHECK;
3150} 4630}
3151 4631
3152void 4632void
3153ev_async_stop (EV_P_ ev_async *w) 4633ev_async_stop (EV_P_ ev_async *w) EV_THROW
3154{ 4634{
3155 clear_pending (EV_A_ (W)w); 4635 clear_pending (EV_A_ (W)w);
3156 if (expect_false (!ev_is_active (w))) 4636 if (expect_false (!ev_is_active (w)))
3157 return; 4637 return;
3158 4638
… …
3169 4649
3170 EV_FREQUENT_CHECK; 4650 EV_FREQUENT_CHECK;
3171} 4651}
3172 4652
3173void 4653void
3174ev_async_send (EV_P_ ev_async *w) 4654ev_async_send (EV_P_ ev_async *w) EV_THROW
3175{ 4655{
3176 w->sent = 1; 4656 w->sent = 1;
3177 evpipe_write (EV_A_ &gotasync); 4657 evpipe_write (EV_A_ &async_pending);
3178} 4658}
3179#endif 4659#endif
3180 4660
3181/*****************************************************************************/ 4661/*****************************************************************************/
3182 4662
… …
3216 4696
3217 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4697 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3218} 4698}
3219 4699
3220void 4700void
3221ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4701ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3222{ 4702{
3223 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4703 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3224 4704
3225 if (expect_false (!once)) 4705 if (expect_false (!once))
3226 { 4706 {
3227 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4707 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3228 return; 4708 return;
3229 } 4709 }
3230 4710
3231 once->cb = cb; 4711 once->cb = cb;
3232 once->arg = arg; 4712 once->arg = arg;
… …
3247} 4727}
3248 4728
3249/*****************************************************************************/ 4729/*****************************************************************************/
3250 4730
3251#if EV_WALK_ENABLE 4731#if EV_WALK_ENABLE
3252void 4732void ecb_cold
3253ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4733ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3254{ 4734{
3255 int i, j; 4735 int i, j;
3256 ev_watcher_list *wl, *wn; 4736 ev_watcher_list *wl, *wn;
3257 4737
3258 if (types & (EV_IO | EV_EMBED)) 4738 if (types & (EV_IO | EV_EMBED))
… …
3301 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4781 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3302#endif 4782#endif
3303 4783
3304#if EV_IDLE_ENABLE 4784#if EV_IDLE_ENABLE
3305 if (types & EV_IDLE) 4785 if (types & EV_IDLE)
3306 for (j = NUMPRI; i--; ) 4786 for (j = NUMPRI; j--; )
3307 for (i = idlecnt [j]; i--; ) 4787 for (i = idlecnt [j]; i--; )
3308 cb (EV_A_ EV_IDLE, idles [j][i]); 4788 cb (EV_A_ EV_IDLE, idles [j][i]);
3309#endif 4789#endif
3310 4790
3311#if EV_FORK_ENABLE 4791#if EV_FORK_ENABLE
… …
3319 if (types & EV_ASYNC) 4799 if (types & EV_ASYNC)
3320 for (i = asynccnt; i--; ) 4800 for (i = asynccnt; i--; )
3321 cb (EV_A_ EV_ASYNC, asyncs [i]); 4801 cb (EV_A_ EV_ASYNC, asyncs [i]);
3322#endif 4802#endif
3323 4803
4804#if EV_PREPARE_ENABLE
3324 if (types & EV_PREPARE) 4805 if (types & EV_PREPARE)
3325 for (i = preparecnt; i--; ) 4806 for (i = preparecnt; i--; )
3326#if EV_EMBED_ENABLE 4807# if EV_EMBED_ENABLE
3327 if (ev_cb (prepares [i]) != embed_prepare_cb) 4808 if (ev_cb (prepares [i]) != embed_prepare_cb)
3328#endif 4809# endif
3329 cb (EV_A_ EV_PREPARE, prepares [i]); 4810 cb (EV_A_ EV_PREPARE, prepares [i]);
4811#endif
3330 4812
4813#if EV_CHECK_ENABLE
3331 if (types & EV_CHECK) 4814 if (types & EV_CHECK)
3332 for (i = checkcnt; i--; ) 4815 for (i = checkcnt; i--; )
3333 cb (EV_A_ EV_CHECK, checks [i]); 4816 cb (EV_A_ EV_CHECK, checks [i]);
4817#endif
3334 4818
4819#if EV_SIGNAL_ENABLE
3335 if (types & EV_SIGNAL) 4820 if (types & EV_SIGNAL)
3336 for (i = 0; i < signalmax; ++i) 4821 for (i = 0; i < EV_NSIG - 1; ++i)
3337 for (wl = signals [i].head; wl; ) 4822 for (wl = signals [i].head; wl; )
3338 { 4823 {
3339 wn = wl->next; 4824 wn = wl->next;
3340 cb (EV_A_ EV_SIGNAL, wl); 4825 cb (EV_A_ EV_SIGNAL, wl);
3341 wl = wn; 4826 wl = wn;
3342 } 4827 }
4828#endif
3343 4829
4830#if EV_CHILD_ENABLE
3344 if (types & EV_CHILD) 4831 if (types & EV_CHILD)
3345 for (i = EV_PID_HASHSIZE; i--; ) 4832 for (i = (EV_PID_HASHSIZE); i--; )
3346 for (wl = childs [i]; wl; ) 4833 for (wl = childs [i]; wl; )
3347 { 4834 {
3348 wn = wl->next; 4835 wn = wl->next;
3349 cb (EV_A_ EV_CHILD, wl); 4836 cb (EV_A_ EV_CHILD, wl);
3350 wl = wn; 4837 wl = wn;
3351 } 4838 }
4839#endif
3352/* EV_STAT 0x00001000 /* stat data changed */ 4840/* EV_STAT 0x00001000 /* stat data changed */
3353/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4841/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3354} 4842}
3355#endif 4843#endif
3356 4844
3357#if EV_MULTIPLICITY 4845#if EV_MULTIPLICITY
3358 #include "ev_wrap.h" 4846 #include "ev_wrap.h"
3359#endif 4847#endif
3360 4848
3361#ifdef __cplusplus
3362}
3363#endif
3364

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