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Comparing libev/ev.c (file contents):
Revision 1.292 by root, Mon Jun 29 07:22:56 2009 UTC vs.
Revision 1.462 by root, Sun Jan 5 02:59:36 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 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
569#ifndef EV_HAVE_EV_TIME 1603#ifndef EV_HAVE_EV_TIME
570ev_tstamp 1604ev_tstamp
571ev_time (void) 1605ev_time (void) EV_THROW
572{ 1606{
573#if EV_USE_REALTIME 1607#if EV_USE_REALTIME
574 if (expect_true (have_realtime)) 1608 if (expect_true (have_realtime))
575 { 1609 {
576 struct timespec ts; 1610 struct timespec ts;
… …
600 return ev_time (); 1634 return ev_time ();
601} 1635}
602 1636
603#if EV_MULTIPLICITY 1637#if EV_MULTIPLICITY
604ev_tstamp 1638ev_tstamp
605ev_now (EV_P) 1639ev_now (EV_P) EV_THROW
606{ 1640{
607 return ev_rt_now; 1641 return ev_rt_now;
608} 1642}
609#endif 1643#endif
610 1644
611void 1645void
612ev_sleep (ev_tstamp delay) 1646ev_sleep (ev_tstamp delay) EV_THROW
613{ 1647{
614 if (delay > 0.) 1648 if (delay > 0.)
615 { 1649 {
616#if EV_USE_NANOSLEEP 1650#if EV_USE_NANOSLEEP
617 struct timespec ts; 1651 struct timespec ts;
618 1652
619 ts.tv_sec = (time_t)delay; 1653 EV_TS_SET (ts, delay);
620 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
621
622 nanosleep (&ts, 0); 1654 nanosleep (&ts, 0);
623#elif defined(_WIN32) 1655#elif defined _WIN32
624 Sleep ((unsigned long)(delay * 1e3)); 1656 Sleep ((unsigned long)(delay * 1e3));
625#else 1657#else
626 struct timeval tv; 1658 struct timeval tv;
627 1659
628 tv.tv_sec = (time_t)delay;
629 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
630
631 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1660 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
632 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1661 /* something not guaranteed by newer posix versions, but guaranteed */
633 /* by older ones */ 1662 /* by older ones */
1663 EV_TV_SET (tv, delay);
634 select (0, 0, 0, 0, &tv); 1664 select (0, 0, 0, 0, &tv);
635#endif 1665#endif
636 } 1666 }
637} 1667}
638 1668
639/*****************************************************************************/ 1669/*****************************************************************************/
640 1670
641#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 */
642 1672
643/* find a suitable new size for the given array, */ 1673/* find a suitable new size for the given array, */
644/* hopefully by rounding to a ncie-to-malloc size */ 1674/* hopefully by rounding to a nice-to-malloc size */
645inline_size int 1675inline_size int
646array_nextsize (int elem, int cur, int cnt) 1676array_nextsize (int elem, int cur, int cnt)
647{ 1677{
648 int ncur = cur + 1; 1678 int ncur = cur + 1;
649 1679
650 do 1680 do
651 ncur <<= 1; 1681 ncur <<= 1;
652 while (cnt > ncur); 1682 while (cnt > ncur);
653 1683
654 /* 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 */
655 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1685 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
656 { 1686 {
657 ncur *= elem; 1687 ncur *= elem;
658 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);
659 ncur = ncur - sizeof (void *) * 4; 1689 ncur = ncur - sizeof (void *) * 4;
… …
661 } 1691 }
662 1692
663 return ncur; 1693 return ncur;
664} 1694}
665 1695
666static noinline void * 1696static void * noinline ecb_cold
667array_realloc (int elem, void *base, int *cur, int cnt) 1697array_realloc (int elem, void *base, int *cur, int cnt)
668{ 1698{
669 *cur = array_nextsize (elem, *cur, cnt); 1699 *cur = array_nextsize (elem, *cur, cnt);
670 return ev_realloc (base, elem * *cur); 1700 return ev_realloc (base, elem * *cur);
671} 1701}
… …
674 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1704 memset ((void *)(base), 0, sizeof (*(base)) * (count))
675 1705
676#define array_needsize(type,base,cur,cnt,init) \ 1706#define array_needsize(type,base,cur,cnt,init) \
677 if (expect_false ((cnt) > (cur))) \ 1707 if (expect_false ((cnt) > (cur))) \
678 { \ 1708 { \
679 int ocur_ = (cur); \ 1709 int ecb_unused ocur_ = (cur); \
680 (base) = (type *)array_realloc \ 1710 (base) = (type *)array_realloc \
681 (sizeof (type), (base), &(cur), (cnt)); \ 1711 (sizeof (type), (base), &(cur), (cnt)); \
682 init ((base) + (ocur_), (cur) - ocur_); \ 1712 init ((base) + (ocur_), (cur) - ocur_); \
683 } 1713 }
684 1714
… …
702pendingcb (EV_P_ ev_prepare *w, int revents) 1732pendingcb (EV_P_ ev_prepare *w, int revents)
703{ 1733{
704} 1734}
705 1735
706void noinline 1736void noinline
707ev_feed_event (EV_P_ void *w, int revents) 1737ev_feed_event (EV_P_ void *w, int revents) EV_THROW
708{ 1738{
709 W w_ = (W)w; 1739 W w_ = (W)w;
710 int pri = ABSPRI (w_); 1740 int pri = ABSPRI (w_);
711 1741
712 if (expect_false (w_->pending)) 1742 if (expect_false (w_->pending))
… …
716 w_->pending = ++pendingcnt [pri]; 1746 w_->pending = ++pendingcnt [pri];
717 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1747 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
718 pendings [pri][w_->pending - 1].w = w_; 1748 pendings [pri][w_->pending - 1].w = w_;
719 pendings [pri][w_->pending - 1].events = revents; 1749 pendings [pri][w_->pending - 1].events = revents;
720 } 1750 }
1751
1752 pendingpri = NUMPRI - 1;
721} 1753}
722 1754
723inline_speed void 1755inline_speed void
724feed_reverse (EV_P_ W w) 1756feed_reverse (EV_P_ W w)
725{ 1757{
… …
745} 1777}
746 1778
747/*****************************************************************************/ 1779/*****************************************************************************/
748 1780
749inline_speed void 1781inline_speed void
750fd_event (EV_P_ int fd, int revents) 1782fd_event_nocheck (EV_P_ int fd, int revents)
751{ 1783{
752 ANFD *anfd = anfds + fd; 1784 ANFD *anfd = anfds + fd;
753 ev_io *w; 1785 ev_io *w;
754 1786
755 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)
… …
759 if (ev) 1791 if (ev)
760 ev_feed_event (EV_A_ (W)w, ev); 1792 ev_feed_event (EV_A_ (W)w, ev);
761 } 1793 }
762} 1794}
763 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
764void 1807void
765ev_feed_fd_event (EV_P_ int fd, int revents) 1808ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
766{ 1809{
767 if (fd >= 0 && fd < anfdmax) 1810 if (fd >= 0 && fd < anfdmax)
768 fd_event (EV_A_ fd, revents); 1811 fd_event_nocheck (EV_A_ fd, revents);
769} 1812}
770 1813
771/* make sure the external fd watch events are in-sync */ 1814/* make sure the external fd watch events are in-sync */
772/* with the kernel/libev internal state */ 1815/* with the kernel/libev internal state */
773inline_size void 1816inline_size void
774fd_reify (EV_P) 1817fd_reify (EV_P)
775{ 1818{
776 int i; 1819 int i;
777 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
778 for (i = 0; i < fdchangecnt; ++i) 1846 for (i = 0; i < fdchangecnt; ++i)
779 { 1847 {
780 int fd = fdchanges [i]; 1848 int fd = fdchanges [i];
781 ANFD *anfd = anfds + fd; 1849 ANFD *anfd = anfds + fd;
782 ev_io *w; 1850 ev_io *w;
783 1851
784 unsigned char events = 0; 1852 unsigned char o_events = anfd->events;
1853 unsigned char o_reify = anfd->reify;
785 1854
786 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1855 anfd->reify = 0;
787 events |= (unsigned char)w->events;
788 1856
789#if EV_SELECT_IS_WINSOCKET 1857 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
790 if (events)
791 { 1858 {
792 unsigned long arg; 1859 anfd->events = 0;
793 #ifdef EV_FD_TO_WIN32_HANDLE 1860
794 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1861 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
795 #else 1862 anfd->events |= (unsigned char)w->events;
796 anfd->handle = _get_osfhandle (fd); 1863
797 #endif 1864 if (o_events != anfd->events)
798 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1865 o_reify = EV__IOFDSET; /* actually |= */
799 } 1866 }
800#endif
801 1867
802 { 1868 if (o_reify & EV__IOFDSET)
803 unsigned char o_events = anfd->events;
804 unsigned char o_reify = anfd->reify;
805
806 anfd->reify = 0;
807 anfd->events = events;
808
809 if (o_events != events || o_reify & EV__IOFDSET)
810 backend_modify (EV_A_ fd, o_events, events); 1869 backend_modify (EV_A_ fd, o_events, anfd->events);
811 }
812 } 1870 }
813 1871
814 fdchangecnt = 0; 1872 fdchangecnt = 0;
815} 1873}
816 1874
… …
828 fdchanges [fdchangecnt - 1] = fd; 1886 fdchanges [fdchangecnt - 1] = fd;
829 } 1887 }
830} 1888}
831 1889
832/* 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 */
833inline_speed void 1891inline_speed void ecb_cold
834fd_kill (EV_P_ int fd) 1892fd_kill (EV_P_ int fd)
835{ 1893{
836 ev_io *w; 1894 ev_io *w;
837 1895
838 while ((w = (ev_io *)anfds [fd].head)) 1896 while ((w = (ev_io *)anfds [fd].head))
… …
840 ev_io_stop (EV_A_ w); 1898 ev_io_stop (EV_A_ w);
841 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);
842 } 1900 }
843} 1901}
844 1902
845/* check whether the given fd is atcually valid, for error recovery */ 1903/* check whether the given fd is actually valid, for error recovery */
846inline_size int 1904inline_size int ecb_cold
847fd_valid (int fd) 1905fd_valid (int fd)
848{ 1906{
849#ifdef _WIN32 1907#ifdef _WIN32
850 return _get_osfhandle (fd) != -1; 1908 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
851#else 1909#else
852 return fcntl (fd, F_GETFD) != -1; 1910 return fcntl (fd, F_GETFD) != -1;
853#endif 1911#endif
854} 1912}
855 1913
856/* called on EBADF to verify fds */ 1914/* called on EBADF to verify fds */
857static void noinline 1915static void noinline ecb_cold
858fd_ebadf (EV_P) 1916fd_ebadf (EV_P)
859{ 1917{
860 int fd; 1918 int fd;
861 1919
862 for (fd = 0; fd < anfdmax; ++fd) 1920 for (fd = 0; fd < anfdmax; ++fd)
… …
864 if (!fd_valid (fd) && errno == EBADF) 1922 if (!fd_valid (fd) && errno == EBADF)
865 fd_kill (EV_A_ fd); 1923 fd_kill (EV_A_ fd);
866} 1924}
867 1925
868/* 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 */
869static void noinline 1927static void noinline ecb_cold
870fd_enomem (EV_P) 1928fd_enomem (EV_P)
871{ 1929{
872 int fd; 1930 int fd;
873 1931
874 for (fd = anfdmax; fd--; ) 1932 for (fd = anfdmax; fd--; )
875 if (anfds [fd].events) 1933 if (anfds [fd].events)
876 { 1934 {
877 fd_kill (EV_A_ fd); 1935 fd_kill (EV_A_ fd);
878 return; 1936 break;
879 } 1937 }
880} 1938}
881 1939
882/* 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 */
883static void noinline 1941static void noinline
… …
888 for (fd = 0; fd < anfdmax; ++fd) 1946 for (fd = 0; fd < anfdmax; ++fd)
889 if (anfds [fd].events) 1947 if (anfds [fd].events)
890 { 1948 {
891 anfds [fd].events = 0; 1949 anfds [fd].events = 0;
892 anfds [fd].emask = 0; 1950 anfds [fd].emask = 0;
893 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1951 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
894 } 1952 }
895} 1953}
896 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
897/*****************************************************************************/ 1969/*****************************************************************************/
898 1970
899/* 1971/*
900 * 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
901 * 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
902 * the branching factor of the d-tree. 1974 * the branching factor of the d-tree.
903 */ 1975 */
904 1976
905/* 1977/*
… …
973 2045
974 for (;;) 2046 for (;;)
975 { 2047 {
976 int c = k << 1; 2048 int c = k << 1;
977 2049
978 if (c > N + HEAP0 - 1) 2050 if (c >= N + HEAP0)
979 break; 2051 break;
980 2052
981 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])
982 ? 1 : 0; 2054 ? 1 : 0;
983 2055
… …
1019 2091
1020/* move an element suitably so it is in a correct place */ 2092/* move an element suitably so it is in a correct place */
1021inline_size void 2093inline_size void
1022adjustheap (ANHE *heap, int N, int k) 2094adjustheap (ANHE *heap, int N, int k)
1023{ 2095{
1024 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)]))
1025 upheap (heap, k); 2097 upheap (heap, k);
1026 else 2098 else
1027 downheap (heap, N, k); 2099 downheap (heap, N, k);
1028} 2100}
1029 2101
… …
1042/*****************************************************************************/ 2114/*****************************************************************************/
1043 2115
1044/* associate signal watchers to a signal signal */ 2116/* associate signal watchers to a signal signal */
1045typedef struct 2117typedef struct
1046{ 2118{
2119 EV_ATOMIC_T pending;
2120#if EV_MULTIPLICITY
2121 EV_P;
2122#endif
1047 WL head; 2123 WL head;
1048 EV_ATOMIC_T gotsig;
1049} ANSIG; 2124} ANSIG;
1050 2125
1051static ANSIG *signals; 2126static ANSIG signals [EV_NSIG - 1];
1052static int signalmax;
1053
1054static EV_ATOMIC_T gotsig;
1055 2127
1056/*****************************************************************************/ 2128/*****************************************************************************/
1057 2129
1058/* used to prepare libev internal fd's */ 2130#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1059/* 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
1060inline_speed void 2177inline_speed void
1061fd_intern (int fd) 2178evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1062{ 2179{
1063#ifdef _WIN32 2180 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1064 unsigned long arg = 1;
1065 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1066#else
1067 fcntl (fd, F_SETFD, FD_CLOEXEC);
1068 fcntl (fd, F_SETFL, O_NONBLOCK);
1069#endif
1070}
1071 2181
1072static void noinline 2182 if (expect_true (*flag))
1073evpipe_init (EV_P) 2183 return;
1074{ 2184
1075 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)
1076 { 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
1077#if EV_USE_EVENTFD 2201#if EV_USE_EVENTFD
1078 if ((evfd = eventfd (0, 0)) >= 0) 2202 if (evpipe [0] < 0)
1079 { 2203 {
1080 evpipe [0] = -1; 2204 uint64_t counter = 1;
1081 fd_intern (evfd); 2205 write (evpipe [1], &counter, sizeof (uint64_t));
1082 ev_io_set (&pipe_w, evfd, EV_READ);
1083 } 2206 }
1084 else 2207 else
1085#endif 2208#endif
1086 { 2209 {
1087 while (pipe (evpipe)) 2210#ifdef _WIN32
1088 ev_syserr ("(libev) error creating signal/async pipe"); 2211 WSABUF buf;
1089 2212 DWORD sent;
1090 fd_intern (evpipe [0]); 2213 buf.buf = &buf;
1091 fd_intern (evpipe [1]); 2214 buf.len = 1;
1092 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
1093 } 2219 }
1094
1095 ev_io_start (EV_A_ &pipe_w);
1096 ev_unref (EV_A); /* watcher should not keep loop alive */
1097 }
1098}
1099
1100inline_size void
1101evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1102{
1103 if (!*flag)
1104 {
1105 int old_errno = errno; /* save errno because write might clobber it */
1106
1107 *flag = 1;
1108
1109#if EV_USE_EVENTFD
1110 if (evfd >= 0)
1111 {
1112 uint64_t counter = 1;
1113 write (evfd, &counter, sizeof (uint64_t));
1114 }
1115 else
1116#endif
1117 write (evpipe [1], &old_errno, 1);
1118 2220
1119 errno = old_errno; 2221 errno = old_errno;
1120 } 2222 }
1121} 2223}
1122 2224
1123/* called whenever the libev signal pipe */ 2225/* called whenever the libev signal pipe */
1124/* got some events (signal, async) */ 2226/* got some events (signal, async) */
1125static void 2227static void
1126pipecb (EV_P_ ev_io *iow, int revents) 2228pipecb (EV_P_ ev_io *iow, int revents)
1127{ 2229{
2230 int i;
2231
2232 if (revents & EV_READ)
2233 {
1128#if EV_USE_EVENTFD 2234#if EV_USE_EVENTFD
1129 if (evfd >= 0) 2235 if (evpipe [0] < 0)
1130 { 2236 {
1131 uint64_t counter; 2237 uint64_t counter;
1132 read (evfd, &counter, sizeof (uint64_t)); 2238 read (evpipe [1], &counter, sizeof (uint64_t));
1133 } 2239 }
1134 else 2240 else
1135#endif 2241#endif
1136 { 2242 {
1137 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
1138 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)
1139 } 2263 {
2264 sig_pending = 0;
1140 2265
1141 if (gotsig && ev_is_default_loop (EV_A)) 2266 ECB_MEMORY_FENCE;
1142 {
1143 int signum;
1144 gotsig = 0;
1145 2267
1146 for (signum = signalmax; signum--; ) 2268 for (i = EV_NSIG - 1; i--; )
1147 if (signals [signum].gotsig) 2269 if (expect_false (signals [i].pending))
1148 ev_feed_signal_event (EV_A_ signum + 1); 2270 ev_feed_signal_event (EV_A_ i + 1);
1149 } 2271 }
2272#endif
1150 2273
1151#if EV_ASYNC_ENABLE 2274#if EV_ASYNC_ENABLE
1152 if (gotasync) 2275 if (async_pending)
1153 { 2276 {
1154 int i; 2277 async_pending = 0;
1155 gotasync = 0; 2278
2279 ECB_MEMORY_FENCE;
1156 2280
1157 for (i = asynccnt; i--; ) 2281 for (i = asynccnt; i--; )
1158 if (asyncs [i]->sent) 2282 if (asyncs [i]->sent)
1159 { 2283 {
1160 asyncs [i]->sent = 0; 2284 asyncs [i]->sent = 0;
2285 ECB_MEMORY_FENCE_RELEASE;
1161 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2286 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1162 } 2287 }
1163 } 2288 }
1164#endif 2289#endif
1165} 2290}
1166 2291
1167/*****************************************************************************/ 2292/*****************************************************************************/
1168 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
1169static void 2310static void
1170ev_sighandler (int signum) 2311ev_sighandler (int signum)
1171{ 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
1172#if EV_MULTIPLICITY 2330#if EV_MULTIPLICITY
1173 struct ev_loop *loop = &default_loop_struct; 2331 /* it is permissible to try to feed a signal to the wrong loop */
1174#endif 2332 /* or, likely more useful, feeding a signal nobody is waiting for */
1175 2333
1176#if _WIN32 2334 if (expect_false (signals [signum].loop != EV_A))
1177 signal (signum, ev_sighandler);
1178#endif
1179
1180 signals [signum - 1].gotsig = 1;
1181 evpipe_write (EV_A_ &gotsig);
1182}
1183
1184void noinline
1185ev_feed_signal_event (EV_P_ int signum)
1186{
1187 WL w;
1188
1189#if EV_MULTIPLICITY
1190 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1191#endif
1192
1193 --signum;
1194
1195 if (signum < 0 || signum >= signalmax)
1196 return; 2335 return;
2336#endif
1197 2337
1198 signals [signum].gotsig = 0; 2338 signals [signum].pending = 0;
2339 ECB_MEMORY_FENCE_RELEASE;
1199 2340
1200 for (w = signals [signum].head; w; w = w->next) 2341 for (w = signals [signum].head; w; w = w->next)
1201 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2342 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1202} 2343}
1203 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
1204/*****************************************************************************/ 2367/*****************************************************************************/
1205 2368
2369#if EV_CHILD_ENABLE
1206static WL childs [EV_PID_HASHSIZE]; 2370static WL childs [EV_PID_HASHSIZE];
1207
1208#ifndef _WIN32
1209 2371
1210static ev_signal childev; 2372static ev_signal childev;
1211 2373
1212#ifndef WIFCONTINUED 2374#ifndef WIFCONTINUED
1213# define WIFCONTINUED(status) 0 2375# define WIFCONTINUED(status) 0
… …
1218child_reap (EV_P_ int chain, int pid, int status) 2380child_reap (EV_P_ int chain, int pid, int status)
1219{ 2381{
1220 ev_child *w; 2382 ev_child *w;
1221 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2383 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1222 2384
1223 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)
1224 { 2386 {
1225 if ((w->pid == pid || !w->pid) 2387 if ((w->pid == pid || !w->pid)
1226 && (!traced || (w->flags & 1))) 2388 && (!traced || (w->flags & 1)))
1227 { 2389 {
1228 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 */
… …
1253 /* 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 */
1254 /* 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 */
1255 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2417 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1256 2418
1257 child_reap (EV_A_ pid, pid, status); 2419 child_reap (EV_A_ pid, pid, status);
1258 if (EV_PID_HASHSIZE > 1) 2420 if ((EV_PID_HASHSIZE) > 1)
1259 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 */
1260} 2422}
1261 2423
1262#endif 2424#endif
1263 2425
1264/*****************************************************************************/ 2426/*****************************************************************************/
1265 2427
2428#if EV_USE_IOCP
2429# include "ev_iocp.c"
2430#endif
1266#if EV_USE_PORT 2431#if EV_USE_PORT
1267# include "ev_port.c" 2432# include "ev_port.c"
1268#endif 2433#endif
1269#if EV_USE_KQUEUE 2434#if EV_USE_KQUEUE
1270# include "ev_kqueue.c" 2435# include "ev_kqueue.c"
… …
1277#endif 2442#endif
1278#if EV_USE_SELECT 2443#if EV_USE_SELECT
1279# include "ev_select.c" 2444# include "ev_select.c"
1280#endif 2445#endif
1281 2446
1282int 2447int ecb_cold
1283ev_version_major (void) 2448ev_version_major (void) EV_THROW
1284{ 2449{
1285 return EV_VERSION_MAJOR; 2450 return EV_VERSION_MAJOR;
1286} 2451}
1287 2452
1288int 2453int ecb_cold
1289ev_version_minor (void) 2454ev_version_minor (void) EV_THROW
1290{ 2455{
1291 return EV_VERSION_MINOR; 2456 return EV_VERSION_MINOR;
1292} 2457}
1293 2458
1294/* 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 */
1295int inline_size 2460int inline_size ecb_cold
1296enable_secure (void) 2461enable_secure (void)
1297{ 2462{
1298#ifdef _WIN32 2463#ifdef _WIN32
1299 return 0; 2464 return 0;
1300#else 2465#else
1301 return getuid () != geteuid () 2466 return getuid () != geteuid ()
1302 || getgid () != getegid (); 2467 || getgid () != getegid ();
1303#endif 2468#endif
1304} 2469}
1305 2470
1306unsigned int 2471unsigned int ecb_cold
1307ev_supported_backends (void) 2472ev_supported_backends (void) EV_THROW
1308{ 2473{
1309 unsigned int flags = 0; 2474 unsigned int flags = 0;
1310 2475
1311 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2476 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1312 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2477 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1315 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2480 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1316 2481
1317 return flags; 2482 return flags;
1318} 2483}
1319 2484
1320unsigned int 2485unsigned int ecb_cold
1321ev_recommended_backends (void) 2486ev_recommended_backends (void) EV_THROW
1322{ 2487{
1323 unsigned int flags = ev_supported_backends (); 2488 unsigned int flags = ev_supported_backends ();
1324 2489
1325#ifndef __NetBSD__ 2490#ifndef __NetBSD__
1326 /* kqueue is borked on everything but netbsd apparently */ 2491 /* kqueue is borked on everything but netbsd apparently */
… …
1330#ifdef __APPLE__ 2495#ifdef __APPLE__
1331 /* only select works correctly on that "unix-certified" platform */ 2496 /* only select works correctly on that "unix-certified" platform */
1332 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2497 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1333 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 */
1334#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
1335 2503
1336 return flags; 2504 return flags;
1337} 2505}
1338 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
1339unsigned int 2519unsigned int
1340ev_embeddable_backends (void) 2520ev_backend (EV_P) EV_THROW
1341{ 2521{
1342 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2522 return backend;
1343
1344 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1345 /* please fix it and tell me how to detect the fix */
1346 flags &= ~EVBACKEND_EPOLL;
1347
1348 return flags;
1349} 2523}
1350 2524
2525#if EV_FEATURE_API
1351unsigned int 2526unsigned int
1352ev_backend (EV_P) 2527ev_iteration (EV_P) EV_THROW
1353{ 2528{
1354 return backend; 2529 return loop_count;
1355} 2530}
1356 2531
1357unsigned int 2532unsigned int
1358ev_loop_count (EV_P) 2533ev_depth (EV_P) EV_THROW
1359{ 2534{
1360 return loop_count; 2535 return loop_depth;
1361} 2536}
1362 2537
1363void 2538void
1364ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2539ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1365{ 2540{
1366 io_blocktime = interval; 2541 io_blocktime = interval;
1367} 2542}
1368 2543
1369void 2544void
1370ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2545ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1371{ 2546{
1372 timeout_blocktime = interval; 2547 timeout_blocktime = interval;
1373} 2548}
1374 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
1375/* initialise a loop structure, must be zero-initialised */ 2576/* initialise a loop structure, must be zero-initialised */
1376static void noinline 2577static void noinline ecb_cold
1377loop_init (EV_P_ unsigned int flags) 2578loop_init (EV_P_ unsigned int flags) EV_THROW
1378{ 2579{
1379 if (!backend) 2580 if (!backend)
1380 { 2581 {
2582 origflags = flags;
2583
1381#if EV_USE_REALTIME 2584#if EV_USE_REALTIME
1382 if (!have_realtime) 2585 if (!have_realtime)
1383 { 2586 {
1384 struct timespec ts; 2587 struct timespec ts;
1385 2588
… …
1396 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2599 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1397 have_monotonic = 1; 2600 have_monotonic = 1;
1398 } 2601 }
1399#endif 2602#endif
1400 2603
1401 ev_rt_now = ev_time ();
1402 mn_now = get_clock ();
1403 now_floor = mn_now;
1404 rtmn_diff = ev_rt_now - mn_now;
1405
1406 io_blocktime = 0.;
1407 timeout_blocktime = 0.;
1408 backend = 0;
1409 backend_fd = -1;
1410 gotasync = 0;
1411#if EV_USE_INOTIFY
1412 fs_fd = -2;
1413#endif
1414
1415 /* pid check not overridable via env */ 2604 /* pid check not overridable via env */
1416#ifndef _WIN32 2605#ifndef _WIN32
1417 if (flags & EVFLAG_FORKCHECK) 2606 if (flags & EVFLAG_FORKCHECK)
1418 curpid = getpid (); 2607 curpid = getpid ();
1419#endif 2608#endif
… …
1421 if (!(flags & EVFLAG_NOENV) 2610 if (!(flags & EVFLAG_NOENV)
1422 && !enable_secure () 2611 && !enable_secure ()
1423 && getenv ("LIBEV_FLAGS")) 2612 && getenv ("LIBEV_FLAGS"))
1424 flags = atoi (getenv ("LIBEV_FLAGS")); 2613 flags = atoi (getenv ("LIBEV_FLAGS"));
1425 2614
1426 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))
1427 flags |= ev_recommended_backends (); 2643 flags |= ev_recommended_backends ();
1428 2644
2645#if EV_USE_IOCP
2646 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2647#endif
1429#if EV_USE_PORT 2648#if EV_USE_PORT
1430 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2649 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1431#endif 2650#endif
1432#if EV_USE_KQUEUE 2651#if EV_USE_KQUEUE
1433 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2652 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1442 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2661 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1443#endif 2662#endif
1444 2663
1445 ev_prepare_init (&pending_w, pendingcb); 2664 ev_prepare_init (&pending_w, pendingcb);
1446 2665
2666#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1447 ev_init (&pipe_w, pipecb); 2667 ev_init (&pipe_w, pipecb);
1448 ev_set_priority (&pipe_w, EV_MAXPRI); 2668 ev_set_priority (&pipe_w, EV_MAXPRI);
2669#endif
1449 } 2670 }
1450} 2671}
1451 2672
1452/* free up a loop structure */ 2673/* free up a loop structure */
1453static void noinline 2674void ecb_cold
1454loop_destroy (EV_P) 2675ev_loop_destroy (EV_P)
1455{ 2676{
1456 int i; 2677 int i;
1457 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
1458 if (ev_is_active (&pipe_w)) 2702 if (ev_is_active (&pipe_w))
1459 { 2703 {
1460 ev_ref (EV_A); /* signal watcher */ 2704 /*ev_ref (EV_A);*/
1461 ev_io_stop (EV_A_ &pipe_w); 2705 /*ev_io_stop (EV_A_ &pipe_w);*/
1462 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
1463#if EV_USE_EVENTFD 2711#if EV_USE_SIGNALFD
1464 if (evfd >= 0) 2712 if (ev_is_active (&sigfd_w))
1465 close (evfd); 2713 close (sigfd);
1466#endif 2714#endif
1467
1468 if (evpipe [0] >= 0)
1469 {
1470 close (evpipe [0]);
1471 close (evpipe [1]);
1472 }
1473 }
1474 2715
1475#if EV_USE_INOTIFY 2716#if EV_USE_INOTIFY
1476 if (fs_fd >= 0) 2717 if (fs_fd >= 0)
1477 close (fs_fd); 2718 close (fs_fd);
1478#endif 2719#endif
1479 2720
1480 if (backend_fd >= 0) 2721 if (backend_fd >= 0)
1481 close (backend_fd); 2722 close (backend_fd);
1482 2723
2724#if EV_USE_IOCP
2725 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2726#endif
1483#if EV_USE_PORT 2727#if EV_USE_PORT
1484 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2728 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1485#endif 2729#endif
1486#if EV_USE_KQUEUE 2730#if EV_USE_KQUEUE
1487 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2731 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1502#if EV_IDLE_ENABLE 2746#if EV_IDLE_ENABLE
1503 array_free (idle, [i]); 2747 array_free (idle, [i]);
1504#endif 2748#endif
1505 } 2749 }
1506 2750
1507 ev_free (anfds); anfdmax = 0; 2751 ev_free (anfds); anfds = 0; anfdmax = 0;
1508 2752
1509 /* have to use the microsoft-never-gets-it-right macro */ 2753 /* have to use the microsoft-never-gets-it-right macro */
1510 array_free (rfeed, EMPTY); 2754 array_free (rfeed, EMPTY);
1511 array_free (fdchange, EMPTY); 2755 array_free (fdchange, EMPTY);
1512 array_free (timer, EMPTY); 2756 array_free (timer, EMPTY);
… …
1514 array_free (periodic, EMPTY); 2758 array_free (periodic, EMPTY);
1515#endif 2759#endif
1516#if EV_FORK_ENABLE 2760#if EV_FORK_ENABLE
1517 array_free (fork, EMPTY); 2761 array_free (fork, EMPTY);
1518#endif 2762#endif
2763#if EV_CLEANUP_ENABLE
2764 array_free (cleanup, EMPTY);
2765#endif
1519 array_free (prepare, EMPTY); 2766 array_free (prepare, EMPTY);
1520 array_free (check, EMPTY); 2767 array_free (check, EMPTY);
1521#if EV_ASYNC_ENABLE 2768#if EV_ASYNC_ENABLE
1522 array_free (async, EMPTY); 2769 array_free (async, EMPTY);
1523#endif 2770#endif
1524 2771
1525 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
1526} 2782}
1527 2783
1528#if EV_USE_INOTIFY 2784#if EV_USE_INOTIFY
1529inline_size void infy_fork (EV_P); 2785inline_size void infy_fork (EV_P);
1530#endif 2786#endif
… …
1543#endif 2799#endif
1544#if EV_USE_INOTIFY 2800#if EV_USE_INOTIFY
1545 infy_fork (EV_A); 2801 infy_fork (EV_A);
1546#endif 2802#endif
1547 2803
2804#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1548 if (ev_is_active (&pipe_w)) 2805 if (ev_is_active (&pipe_w))
1549 { 2806 {
1550 /* this "locks" the handlers against writing to the pipe */ 2807 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1551 /* while we modify the fd vars */
1552 gotsig = 1;
1553#if EV_ASYNC_ENABLE
1554 gotasync = 1;
1555#endif
1556 2808
1557 ev_ref (EV_A); 2809 ev_ref (EV_A);
1558 ev_io_stop (EV_A_ &pipe_w); 2810 ev_io_stop (EV_A_ &pipe_w);
1559 2811
1560#if EV_USE_EVENTFD
1561 if (evfd >= 0)
1562 close (evfd);
1563#endif
1564
1565 if (evpipe [0] >= 0) 2812 if (evpipe [0] >= 0)
1566 { 2813 EV_WIN32_CLOSE_FD (evpipe [0]);
1567 close (evpipe [0]);
1568 close (evpipe [1]);
1569 }
1570 2814
1571 evpipe_init (EV_A); 2815 evpipe_init (EV_A);
1572 /* now iterate over everything, in case we missed something */ 2816 /* iterate over everything, in case we missed something before */
1573 pipecb (EV_A_ &pipe_w, EV_READ); 2817 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1574 } 2818 }
2819#endif
1575 2820
1576 postfork = 0; 2821 postfork = 0;
1577} 2822}
1578 2823
1579#if EV_MULTIPLICITY 2824#if EV_MULTIPLICITY
1580 2825
1581struct ev_loop * 2826struct ev_loop * ecb_cold
1582ev_loop_new (unsigned int flags) 2827ev_loop_new (unsigned int flags) EV_THROW
1583{ 2828{
1584 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));
1585 2830
1586 memset (loop, 0, sizeof (struct ev_loop)); 2831 memset (EV_A, 0, sizeof (struct ev_loop));
1587
1588 loop_init (EV_A_ flags); 2832 loop_init (EV_A_ flags);
1589 2833
1590 if (ev_backend (EV_A)) 2834 if (ev_backend (EV_A))
1591 return loop; 2835 return EV_A;
1592 2836
2837 ev_free (EV_A);
1593 return 0; 2838 return 0;
1594} 2839}
1595 2840
1596void 2841#endif /* multiplicity */
1597ev_loop_destroy (EV_P)
1598{
1599 loop_destroy (EV_A);
1600 ev_free (loop);
1601}
1602
1603void
1604ev_loop_fork (EV_P)
1605{
1606 postfork = 1; /* must be in line with ev_default_fork */
1607}
1608 2842
1609#if EV_VERIFY 2843#if EV_VERIFY
1610static void noinline 2844static void noinline ecb_cold
1611verify_watcher (EV_P_ W w) 2845verify_watcher (EV_P_ W w)
1612{ 2846{
1613 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));
1614 2848
1615 if (w->pending) 2849 if (w->pending)
1616 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));
1617} 2851}
1618 2852
1619static void noinline 2853static void noinline ecb_cold
1620verify_heap (EV_P_ ANHE *heap, int N) 2854verify_heap (EV_P_ ANHE *heap, int N)
1621{ 2855{
1622 int i; 2856 int i;
1623 2857
1624 for (i = HEAP0; i < N + HEAP0; ++i) 2858 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1629 2863
1630 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2864 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1631 } 2865 }
1632} 2866}
1633 2867
1634static void noinline 2868static void noinline ecb_cold
1635array_verify (EV_P_ W *ws, int cnt) 2869array_verify (EV_P_ W *ws, int cnt)
1636{ 2870{
1637 while (cnt--) 2871 while (cnt--)
1638 { 2872 {
1639 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2873 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1640 verify_watcher (EV_A_ ws [cnt]); 2874 verify_watcher (EV_A_ ws [cnt]);
1641 } 2875 }
1642} 2876}
1643#endif 2877#endif
1644 2878
1645void 2879#if EV_FEATURE_API
1646ev_loop_verify (EV_P) 2880void ecb_cold
2881ev_verify (EV_P) EV_THROW
1647{ 2882{
1648#if EV_VERIFY 2883#if EV_VERIFY
1649 int i; 2884 int i;
1650 WL w; 2885 WL w, w2;
1651 2886
1652 assert (activecnt >= -1); 2887 assert (activecnt >= -1);
1653 2888
1654 assert (fdchangemax >= fdchangecnt); 2889 assert (fdchangemax >= fdchangecnt);
1655 for (i = 0; i < fdchangecnt; ++i) 2890 for (i = 0; i < fdchangecnt; ++i)
1656 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2891 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1657 2892
1658 assert (anfdmax >= 0); 2893 assert (anfdmax >= 0);
1659 for (i = 0; i < anfdmax; ++i) 2894 for (i = 0; i < anfdmax; ++i)
2895 {
2896 int j = 0;
2897
1660 for (w = anfds [i].head; w; w = w->next) 2898 for (w = w2 = anfds [i].head; w; w = w->next)
1661 { 2899 {
1662 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
1663 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));
1664 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));
1665 } 2910 }
2911 }
1666 2912
1667 assert (timermax >= timercnt); 2913 assert (timermax >= timercnt);
1668 verify_heap (EV_A_ timers, timercnt); 2914 verify_heap (EV_A_ timers, timercnt);
1669 2915
1670#if EV_PERIODIC_ENABLE 2916#if EV_PERIODIC_ENABLE
… …
1685#if EV_FORK_ENABLE 2931#if EV_FORK_ENABLE
1686 assert (forkmax >= forkcnt); 2932 assert (forkmax >= forkcnt);
1687 array_verify (EV_A_ (W *)forks, forkcnt); 2933 array_verify (EV_A_ (W *)forks, forkcnt);
1688#endif 2934#endif
1689 2935
2936#if EV_CLEANUP_ENABLE
2937 assert (cleanupmax >= cleanupcnt);
2938 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2939#endif
2940
1690#if EV_ASYNC_ENABLE 2941#if EV_ASYNC_ENABLE
1691 assert (asyncmax >= asynccnt); 2942 assert (asyncmax >= asynccnt);
1692 array_verify (EV_A_ (W *)asyncs, asynccnt); 2943 array_verify (EV_A_ (W *)asyncs, asynccnt);
1693#endif 2944#endif
1694 2945
2946#if EV_PREPARE_ENABLE
1695 assert (preparemax >= preparecnt); 2947 assert (preparemax >= preparecnt);
1696 array_verify (EV_A_ (W *)prepares, preparecnt); 2948 array_verify (EV_A_ (W *)prepares, preparecnt);
2949#endif
1697 2950
2951#if EV_CHECK_ENABLE
1698 assert (checkmax >= checkcnt); 2952 assert (checkmax >= checkcnt);
1699 array_verify (EV_A_ (W *)checks, checkcnt); 2953 array_verify (EV_A_ (W *)checks, checkcnt);
2954#endif
1700 2955
1701# if 0 2956# if 0
2957#if EV_CHILD_ENABLE
1702 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)
1703 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2959 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2960#endif
1704# endif 2961# endif
1705#endif 2962#endif
1706} 2963}
1707 2964#endif
1708#endif /* multiplicity */
1709 2965
1710#if EV_MULTIPLICITY 2966#if EV_MULTIPLICITY
1711struct ev_loop * 2967struct ev_loop * ecb_cold
1712ev_default_loop_init (unsigned int flags)
1713#else 2968#else
1714int 2969int
2970#endif
1715ev_default_loop (unsigned int flags) 2971ev_default_loop (unsigned int flags) EV_THROW
1716#endif
1717{ 2972{
1718 if (!ev_default_loop_ptr) 2973 if (!ev_default_loop_ptr)
1719 { 2974 {
1720#if EV_MULTIPLICITY 2975#if EV_MULTIPLICITY
1721 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2976 EV_P = ev_default_loop_ptr = &default_loop_struct;
1722#else 2977#else
1723 ev_default_loop_ptr = 1; 2978 ev_default_loop_ptr = 1;
1724#endif 2979#endif
1725 2980
1726 loop_init (EV_A_ flags); 2981 loop_init (EV_A_ flags);
1727 2982
1728 if (ev_backend (EV_A)) 2983 if (ev_backend (EV_A))
1729 { 2984 {
1730#ifndef _WIN32 2985#if EV_CHILD_ENABLE
1731 ev_signal_init (&childev, childcb, SIGCHLD); 2986 ev_signal_init (&childev, childcb, SIGCHLD);
1732 ev_set_priority (&childev, EV_MAXPRI); 2987 ev_set_priority (&childev, EV_MAXPRI);
1733 ev_signal_start (EV_A_ &childev); 2988 ev_signal_start (EV_A_ &childev);
1734 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2989 ev_unref (EV_A); /* child watcher should not keep loop alive */
1735#endif 2990#endif
… …
1740 2995
1741 return ev_default_loop_ptr; 2996 return ev_default_loop_ptr;
1742} 2997}
1743 2998
1744void 2999void
1745ev_default_destroy (void) 3000ev_loop_fork (EV_P) EV_THROW
1746{ 3001{
1747#if EV_MULTIPLICITY 3002 postfork = 1;
1748 struct ev_loop *loop = ev_default_loop_ptr;
1749#endif
1750
1751 ev_default_loop_ptr = 0;
1752
1753#ifndef _WIN32
1754 ev_ref (EV_A); /* child watcher */
1755 ev_signal_stop (EV_A_ &childev);
1756#endif
1757
1758 loop_destroy (EV_A);
1759}
1760
1761void
1762ev_default_fork (void)
1763{
1764#if EV_MULTIPLICITY
1765 struct ev_loop *loop = ev_default_loop_ptr;
1766#endif
1767
1768 postfork = 1; /* must be in line with ev_loop_fork */
1769} 3003}
1770 3004
1771/*****************************************************************************/ 3005/*****************************************************************************/
1772 3006
1773void 3007void
1774ev_invoke (EV_P_ void *w, int revents) 3008ev_invoke (EV_P_ void *w, int revents)
1775{ 3009{
1776 EV_CB_INVOKE ((W)w, revents); 3010 EV_CB_INVOKE ((W)w, revents);
1777} 3011}
1778 3012
1779inline_speed void 3013unsigned int
1780call_pending (EV_P) 3014ev_pending_count (EV_P) EV_THROW
1781{ 3015{
1782 int pri; 3016 int pri;
3017 unsigned int count = 0;
1783 3018
1784 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
1785 while (pendingcnt [pri]) 3034 while (pendingcnt [pendingpri])
1786 { 3035 {
1787 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3036 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1788 3037
1789 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1790 /* ^ this is no longer true, as pending_w could be here */
1791
1792 p->w->pending = 0; 3038 p->w->pending = 0;
1793 EV_CB_INVOKE (p->w, p->events); 3039 EV_CB_INVOKE (p->w, p->events);
1794 EV_FREQUENT_CHECK; 3040 EV_FREQUENT_CHECK;
1795 } 3041 }
3042 }
1796} 3043}
1797 3044
1798#if EV_IDLE_ENABLE 3045#if EV_IDLE_ENABLE
1799/* make idle watchers pending. this handles the "call-idle */ 3046/* make idle watchers pending. this handles the "call-idle */
1800/* only when higher priorities are idle" logic */ 3047/* only when higher priorities are idle" logic */
… …
1852 EV_FREQUENT_CHECK; 3099 EV_FREQUENT_CHECK;
1853 feed_reverse (EV_A_ (W)w); 3100 feed_reverse (EV_A_ (W)w);
1854 } 3101 }
1855 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3102 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1856 3103
1857 feed_reverse_done (EV_A_ EV_TIMEOUT); 3104 feed_reverse_done (EV_A_ EV_TIMER);
1858 } 3105 }
1859} 3106}
1860 3107
1861#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
1862/* make periodics pending */ 3134/* make periodics pending */
1863inline_size void 3135inline_size void
1864periodics_reify (EV_P) 3136periodics_reify (EV_P)
1865{ 3137{
1866 EV_FREQUENT_CHECK; 3138 EV_FREQUENT_CHECK;
1867 3139
1868 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3140 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1869 { 3141 {
1870 int feed_count = 0;
1871
1872 do 3142 do
1873 { 3143 {
1874 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3144 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1875 3145
1876 /*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)));*/
… …
1885 ANHE_at_cache (periodics [HEAP0]); 3155 ANHE_at_cache (periodics [HEAP0]);
1886 downheap (periodics, periodiccnt, HEAP0); 3156 downheap (periodics, periodiccnt, HEAP0);
1887 } 3157 }
1888 else if (w->interval) 3158 else if (w->interval)
1889 { 3159 {
1890 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3160 periodic_recalc (EV_A_ w);
1891 /* if next trigger time is not sufficiently in the future, put it there */
1892 /* this might happen because of floating point inexactness */
1893 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1894 {
1895 ev_at (w) += w->interval;
1896
1897 /* if interval is unreasonably low we might still have a time in the past */
1898 /* so correct this. this will make the periodic very inexact, but the user */
1899 /* has effectively asked to get triggered more often than possible */
1900 if (ev_at (w) < ev_rt_now)
1901 ev_at (w) = ev_rt_now;
1902 }
1903
1904 ANHE_at_cache (periodics [HEAP0]); 3161 ANHE_at_cache (periodics [HEAP0]);
1905 downheap (periodics, periodiccnt, HEAP0); 3162 downheap (periodics, periodiccnt, HEAP0);
1906 } 3163 }
1907 else 3164 else
1908 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3165 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1915 feed_reverse_done (EV_A_ EV_PERIODIC); 3172 feed_reverse_done (EV_A_ EV_PERIODIC);
1916 } 3173 }
1917} 3174}
1918 3175
1919/* simply recalculate all periodics */ 3176/* simply recalculate all periodics */
1920/* 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? */
1921static void noinline 3178static void noinline ecb_cold
1922periodics_reschedule (EV_P) 3179periodics_reschedule (EV_P)
1923{ 3180{
1924 int i; 3181 int i;
1925 3182
1926 /* adjust periodics after time jump */ 3183 /* adjust periodics after time jump */
… …
1929 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3186 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1930 3187
1931 if (w->reschedule_cb) 3188 if (w->reschedule_cb)
1932 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3189 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1933 else if (w->interval) 3190 else if (w->interval)
1934 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3191 periodic_recalc (EV_A_ w);
1935 3192
1936 ANHE_at_cache (periodics [i]); 3193 ANHE_at_cache (periodics [i]);
1937 } 3194 }
1938 3195
1939 reheap (periodics, periodiccnt); 3196 reheap (periodics, periodiccnt);
1940} 3197}
1941#endif 3198#endif
1942 3199
1943/* adjust all timers by a given offset */ 3200/* adjust all timers by a given offset */
1944static void noinline 3201static void noinline ecb_cold
1945timers_reschedule (EV_P_ ev_tstamp adjust) 3202timers_reschedule (EV_P_ ev_tstamp adjust)
1946{ 3203{
1947 int i; 3204 int i;
1948 3205
1949 for (i = 0; i < timercnt; ++i) 3206 for (i = 0; i < timercnt; ++i)
… …
1953 ANHE_at_cache (*he); 3210 ANHE_at_cache (*he);
1954 } 3211 }
1955} 3212}
1956 3213
1957/* fetch new monotonic and realtime times from the kernel */ 3214/* fetch new monotonic and realtime times from the kernel */
1958/* also detetc if there was a timejump, and act accordingly */ 3215/* also detect if there was a timejump, and act accordingly */
1959inline_speed void 3216inline_speed void
1960time_update (EV_P_ ev_tstamp max_block) 3217time_update (EV_P_ ev_tstamp max_block)
1961{ 3218{
1962#if EV_USE_MONOTONIC 3219#if EV_USE_MONOTONIC
1963 if (expect_true (have_monotonic)) 3220 if (expect_true (have_monotonic))
… …
1986 * 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
1987 * in the unlikely event of having been preempted here. 3244 * in the unlikely event of having been preempted here.
1988 */ 3245 */
1989 for (i = 4; --i; ) 3246 for (i = 4; --i; )
1990 { 3247 {
3248 ev_tstamp diff;
1991 rtmn_diff = ev_rt_now - mn_now; 3249 rtmn_diff = ev_rt_now - mn_now;
1992 3250
3251 diff = odiff - rtmn_diff;
3252
1993 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3253 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1994 return; /* all is well */ 3254 return; /* all is well */
1995 3255
1996 ev_rt_now = ev_time (); 3256 ev_rt_now = ev_time ();
1997 mn_now = get_clock (); 3257 mn_now = get_clock ();
1998 now_floor = mn_now; 3258 now_floor = mn_now;
… …
2020 3280
2021 mn_now = ev_rt_now; 3281 mn_now = ev_rt_now;
2022 } 3282 }
2023} 3283}
2024 3284
2025static int loop_done; 3285int
2026
2027void
2028ev_loop (EV_P_ int flags) 3286ev_run (EV_P_ int flags)
2029{ 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
2030 loop_done = EVUNLOOP_CANCEL; 3294 loop_done = EVBREAK_CANCEL;
2031 3295
2032 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 */
2033 3297
2034 do 3298 do
2035 { 3299 {
2036#if EV_VERIFY >= 2 3300#if EV_VERIFY >= 2
2037 ev_loop_verify (EV_A); 3301 ev_verify (EV_A);
2038#endif 3302#endif
2039 3303
2040#ifndef _WIN32 3304#ifndef _WIN32
2041 if (expect_false (curpid)) /* penalise the forking check even more */ 3305 if (expect_false (curpid)) /* penalise the forking check even more */
2042 if (expect_false (getpid () != curpid)) 3306 if (expect_false (getpid () != curpid))
… …
2050 /* we might have forked, so queue fork handlers */ 3314 /* we might have forked, so queue fork handlers */
2051 if (expect_false (postfork)) 3315 if (expect_false (postfork))
2052 if (forkcnt) 3316 if (forkcnt)
2053 { 3317 {
2054 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3318 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2055 call_pending (EV_A); 3319 EV_INVOKE_PENDING;
2056 } 3320 }
2057#endif 3321#endif
2058 3322
3323#if EV_PREPARE_ENABLE
2059 /* queue prepare watchers (and execute them) */ 3324 /* queue prepare watchers (and execute them) */
2060 if (expect_false (preparecnt)) 3325 if (expect_false (preparecnt))
2061 { 3326 {
2062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3327 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2063 call_pending (EV_A); 3328 EV_INVOKE_PENDING;
2064 } 3329 }
3330#endif
3331
3332 if (expect_false (loop_done))
3333 break;
2065 3334
2066 /* we might have forked, so reify kernel state if necessary */ 3335 /* we might have forked, so reify kernel state if necessary */
2067 if (expect_false (postfork)) 3336 if (expect_false (postfork))
2068 loop_fork (EV_A); 3337 loop_fork (EV_A);
2069 3338
… …
2073 /* calculate blocking time */ 3342 /* calculate blocking time */
2074 { 3343 {
2075 ev_tstamp waittime = 0.; 3344 ev_tstamp waittime = 0.;
2076 ev_tstamp sleeptime = 0.; 3345 ev_tstamp sleeptime = 0.;
2077 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
2078 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3358 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2079 { 3359 {
2080 /* update time to cancel out callback processing overhead */
2081 time_update (EV_A_ 1e100);
2082
2083 waittime = MAX_BLOCKTIME; 3360 waittime = MAX_BLOCKTIME;
2084 3361
2085 if (timercnt) 3362 if (timercnt)
2086 { 3363 {
2087 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3364 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2088 if (waittime > to) waittime = to; 3365 if (waittime > to) waittime = to;
2089 } 3366 }
2090 3367
2091#if EV_PERIODIC_ENABLE 3368#if EV_PERIODIC_ENABLE
2092 if (periodiccnt) 3369 if (periodiccnt)
2093 { 3370 {
2094 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3371 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2095 if (waittime > to) waittime = to; 3372 if (waittime > to) waittime = to;
2096 } 3373 }
2097#endif 3374#endif
2098 3375
3376 /* don't let timeouts decrease the waittime below timeout_blocktime */
2099 if (expect_false (waittime < timeout_blocktime)) 3377 if (expect_false (waittime < timeout_blocktime))
2100 waittime = timeout_blocktime; 3378 waittime = timeout_blocktime;
2101 3379
2102 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;
2103 3384
3385 /* extra check because io_blocktime is commonly 0 */
2104 if (expect_true (sleeptime > io_blocktime)) 3386 if (expect_false (io_blocktime))
2105 sleeptime = io_blocktime;
2106
2107 if (sleeptime)
2108 { 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 {
2109 ev_sleep (sleeptime); 3395 ev_sleep (sleeptime);
2110 waittime -= sleeptime; 3396 waittime -= sleeptime;
3397 }
2111 } 3398 }
2112 } 3399 }
2113 3400
3401#if EV_FEATURE_API
2114 ++loop_count; 3402 ++loop_count;
3403#endif
3404 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2115 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
2116 3417
2117 /* update ev_rt_now, do magic */ 3418 /* update ev_rt_now, do magic */
2118 time_update (EV_A_ waittime + sleeptime); 3419 time_update (EV_A_ waittime + sleeptime);
2119 } 3420 }
2120 3421
… …
2127#if EV_IDLE_ENABLE 3428#if EV_IDLE_ENABLE
2128 /* queue idle watchers unless other events are pending */ 3429 /* queue idle watchers unless other events are pending */
2129 idle_reify (EV_A); 3430 idle_reify (EV_A);
2130#endif 3431#endif
2131 3432
3433#if EV_CHECK_ENABLE
2132 /* queue check watchers, to be executed first */ 3434 /* queue check watchers, to be executed first */
2133 if (expect_false (checkcnt)) 3435 if (expect_false (checkcnt))
2134 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3436 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3437#endif
2135 3438
2136 call_pending (EV_A); 3439 EV_INVOKE_PENDING;
2137 } 3440 }
2138 while (expect_true ( 3441 while (expect_true (
2139 activecnt 3442 activecnt
2140 && !loop_done 3443 && !loop_done
2141 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3444 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2142 )); 3445 ));
2143 3446
2144 if (loop_done == EVUNLOOP_ONE) 3447 if (loop_done == EVBREAK_ONE)
2145 loop_done = EVUNLOOP_CANCEL; 3448 loop_done = EVBREAK_CANCEL;
3449
3450#if EV_FEATURE_API
3451 --loop_depth;
3452#endif
3453
3454 return activecnt;
2146} 3455}
2147 3456
2148void 3457void
2149ev_unloop (EV_P_ int how) 3458ev_break (EV_P_ int how) EV_THROW
2150{ 3459{
2151 loop_done = how; 3460 loop_done = how;
2152} 3461}
2153 3462
2154void 3463void
2155ev_ref (EV_P) 3464ev_ref (EV_P) EV_THROW
2156{ 3465{
2157 ++activecnt; 3466 ++activecnt;
2158} 3467}
2159 3468
2160void 3469void
2161ev_unref (EV_P) 3470ev_unref (EV_P) EV_THROW
2162{ 3471{
2163 --activecnt; 3472 --activecnt;
2164} 3473}
2165 3474
2166void 3475void
2167ev_now_update (EV_P) 3476ev_now_update (EV_P) EV_THROW
2168{ 3477{
2169 time_update (EV_A_ 1e100); 3478 time_update (EV_A_ 1e100);
2170} 3479}
2171 3480
2172void 3481void
2173ev_suspend (EV_P) 3482ev_suspend (EV_P) EV_THROW
2174{ 3483{
2175 ev_now_update (EV_A); 3484 ev_now_update (EV_A);
2176} 3485}
2177 3486
2178void 3487void
2179ev_resume (EV_P) 3488ev_resume (EV_P) EV_THROW
2180{ 3489{
2181 ev_tstamp mn_prev = mn_now; 3490 ev_tstamp mn_prev = mn_now;
2182 3491
2183 ev_now_update (EV_A); 3492 ev_now_update (EV_A);
2184 timers_reschedule (EV_A_ mn_now - mn_prev); 3493 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2201inline_size void 3510inline_size void
2202wlist_del (WL *head, WL elem) 3511wlist_del (WL *head, WL elem)
2203{ 3512{
2204 while (*head) 3513 while (*head)
2205 { 3514 {
2206 if (*head == elem) 3515 if (expect_true (*head == elem))
2207 { 3516 {
2208 *head = elem->next; 3517 *head = elem->next;
2209 return; 3518 break;
2210 } 3519 }
2211 3520
2212 head = &(*head)->next; 3521 head = &(*head)->next;
2213 } 3522 }
2214} 3523}
… …
2223 w->pending = 0; 3532 w->pending = 0;
2224 } 3533 }
2225} 3534}
2226 3535
2227int 3536int
2228ev_clear_pending (EV_P_ void *w) 3537ev_clear_pending (EV_P_ void *w) EV_THROW
2229{ 3538{
2230 W w_ = (W)w; 3539 W w_ = (W)w;
2231 int pending = w_->pending; 3540 int pending = w_->pending;
2232 3541
2233 if (expect_true (pending)) 3542 if (expect_true (pending))
… …
2242} 3551}
2243 3552
2244inline_size void 3553inline_size void
2245pri_adjust (EV_P_ W w) 3554pri_adjust (EV_P_ W w)
2246{ 3555{
2247 int pri = w->priority; 3556 int pri = ev_priority (w);
2248 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3557 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2249 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3558 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2250 w->priority = pri; 3559 ev_set_priority (w, pri);
2251} 3560}
2252 3561
2253inline_speed void 3562inline_speed void
2254ev_start (EV_P_ W w, int active) 3563ev_start (EV_P_ W w, int active)
2255{ 3564{
… …
2266} 3575}
2267 3576
2268/*****************************************************************************/ 3577/*****************************************************************************/
2269 3578
2270void noinline 3579void noinline
2271ev_io_start (EV_P_ ev_io *w) 3580ev_io_start (EV_P_ ev_io *w) EV_THROW
2272{ 3581{
2273 int fd = w->fd; 3582 int fd = w->fd;
2274 3583
2275 if (expect_false (ev_is_active (w))) 3584 if (expect_false (ev_is_active (w)))
2276 return; 3585 return;
2277 3586
2278 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3587 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2279 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3588 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2280 3589
2281 EV_FREQUENT_CHECK; 3590 EV_FREQUENT_CHECK;
2282 3591
2283 ev_start (EV_A_ (W)w, 1); 3592 ev_start (EV_A_ (W)w, 1);
2284 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3593 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2285 wlist_add (&anfds[fd].head, (WL)w); 3594 wlist_add (&anfds[fd].head, (WL)w);
2286 3595
3596 /* common bug, apparently */
3597 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3598
2287 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3599 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2288 w->events &= ~EV__IOFDSET; 3600 w->events &= ~EV__IOFDSET;
2289 3601
2290 EV_FREQUENT_CHECK; 3602 EV_FREQUENT_CHECK;
2291} 3603}
2292 3604
2293void noinline 3605void noinline
2294ev_io_stop (EV_P_ ev_io *w) 3606ev_io_stop (EV_P_ ev_io *w) EV_THROW
2295{ 3607{
2296 clear_pending (EV_A_ (W)w); 3608 clear_pending (EV_A_ (W)w);
2297 if (expect_false (!ev_is_active (w))) 3609 if (expect_false (!ev_is_active (w)))
2298 return; 3610 return;
2299 3611
… …
2302 EV_FREQUENT_CHECK; 3614 EV_FREQUENT_CHECK;
2303 3615
2304 wlist_del (&anfds[w->fd].head, (WL)w); 3616 wlist_del (&anfds[w->fd].head, (WL)w);
2305 ev_stop (EV_A_ (W)w); 3617 ev_stop (EV_A_ (W)w);
2306 3618
2307 fd_change (EV_A_ w->fd, 1); 3619 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2308 3620
2309 EV_FREQUENT_CHECK; 3621 EV_FREQUENT_CHECK;
2310} 3622}
2311 3623
2312void noinline 3624void noinline
2313ev_timer_start (EV_P_ ev_timer *w) 3625ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2314{ 3626{
2315 if (expect_false (ev_is_active (w))) 3627 if (expect_false (ev_is_active (w)))
2316 return; 3628 return;
2317 3629
2318 ev_at (w) += mn_now; 3630 ev_at (w) += mn_now;
… …
2332 3644
2333 /*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));*/
2334} 3646}
2335 3647
2336void noinline 3648void noinline
2337ev_timer_stop (EV_P_ ev_timer *w) 3649ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2338{ 3650{
2339 clear_pending (EV_A_ (W)w); 3651 clear_pending (EV_A_ (W)w);
2340 if (expect_false (!ev_is_active (w))) 3652 if (expect_false (!ev_is_active (w)))
2341 return; 3653 return;
2342 3654
… …
2354 timers [active] = timers [timercnt + HEAP0]; 3666 timers [active] = timers [timercnt + HEAP0];
2355 adjustheap (timers, timercnt, active); 3667 adjustheap (timers, timercnt, active);
2356 } 3668 }
2357 } 3669 }
2358 3670
2359 EV_FREQUENT_CHECK;
2360
2361 ev_at (w) -= mn_now; 3671 ev_at (w) -= mn_now;
2362 3672
2363 ev_stop (EV_A_ (W)w); 3673 ev_stop (EV_A_ (W)w);
3674
3675 EV_FREQUENT_CHECK;
2364} 3676}
2365 3677
2366void noinline 3678void noinline
2367ev_timer_again (EV_P_ ev_timer *w) 3679ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2368{ 3680{
2369 EV_FREQUENT_CHECK; 3681 EV_FREQUENT_CHECK;
3682
3683 clear_pending (EV_A_ (W)w);
2370 3684
2371 if (ev_is_active (w)) 3685 if (ev_is_active (w))
2372 { 3686 {
2373 if (w->repeat) 3687 if (w->repeat)
2374 { 3688 {
… …
2386 } 3700 }
2387 3701
2388 EV_FREQUENT_CHECK; 3702 EV_FREQUENT_CHECK;
2389} 3703}
2390 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
2391#if EV_PERIODIC_ENABLE 3711#if EV_PERIODIC_ENABLE
2392void noinline 3712void noinline
2393ev_periodic_start (EV_P_ ev_periodic *w) 3713ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2394{ 3714{
2395 if (expect_false (ev_is_active (w))) 3715 if (expect_false (ev_is_active (w)))
2396 return; 3716 return;
2397 3717
2398 if (w->reschedule_cb) 3718 if (w->reschedule_cb)
2399 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3719 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2400 else if (w->interval) 3720 else if (w->interval)
2401 { 3721 {
2402 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.));
2403 /* this formula differs from the one in periodic_reify because we do not always round up */ 3723 periodic_recalc (EV_A_ w);
2404 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2405 } 3724 }
2406 else 3725 else
2407 ev_at (w) = w->offset; 3726 ev_at (w) = w->offset;
2408 3727
2409 EV_FREQUENT_CHECK; 3728 EV_FREQUENT_CHECK;
… …
2419 3738
2420 /*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));*/
2421} 3740}
2422 3741
2423void noinline 3742void noinline
2424ev_periodic_stop (EV_P_ ev_periodic *w) 3743ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2425{ 3744{
2426 clear_pending (EV_A_ (W)w); 3745 clear_pending (EV_A_ (W)w);
2427 if (expect_false (!ev_is_active (w))) 3746 if (expect_false (!ev_is_active (w)))
2428 return; 3747 return;
2429 3748
… …
2441 periodics [active] = periodics [periodiccnt + HEAP0]; 3760 periodics [active] = periodics [periodiccnt + HEAP0];
2442 adjustheap (periodics, periodiccnt, active); 3761 adjustheap (periodics, periodiccnt, active);
2443 } 3762 }
2444 } 3763 }
2445 3764
2446 EV_FREQUENT_CHECK;
2447
2448 ev_stop (EV_A_ (W)w); 3765 ev_stop (EV_A_ (W)w);
3766
3767 EV_FREQUENT_CHECK;
2449} 3768}
2450 3769
2451void noinline 3770void noinline
2452ev_periodic_again (EV_P_ ev_periodic *w) 3771ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2453{ 3772{
2454 /* TODO: use adjustheap and recalculation */ 3773 /* TODO: use adjustheap and recalculation */
2455 ev_periodic_stop (EV_A_ w); 3774 ev_periodic_stop (EV_A_ w);
2456 ev_periodic_start (EV_A_ w); 3775 ev_periodic_start (EV_A_ w);
2457} 3776}
… …
2459 3778
2460#ifndef SA_RESTART 3779#ifndef SA_RESTART
2461# define SA_RESTART 0 3780# define SA_RESTART 0
2462#endif 3781#endif
2463 3782
3783#if EV_SIGNAL_ENABLE
3784
2464void noinline 3785void noinline
2465ev_signal_start (EV_P_ ev_signal *w) 3786ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2466{ 3787{
2467#if EV_MULTIPLICITY
2468 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2469#endif
2470 if (expect_false (ev_is_active (w))) 3788 if (expect_false (ev_is_active (w)))
2471 return; 3789 return;
2472 3790
2473 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));
2474 3792
2475 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));
2476 3796
2477 EV_FREQUENT_CHECK; 3797 signals [w->signum - 1].loop = EV_A;
3798 ECB_MEMORY_FENCE_RELEASE;
3799#endif
2478 3800
3801 EV_FREQUENT_CHECK;
3802
3803#if EV_USE_SIGNALFD
3804 if (sigfd == -2)
2479 { 3805 {
2480#ifndef _WIN32 3806 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2481 sigset_t full, prev; 3807 if (sigfd < 0 && errno == EINVAL)
2482 sigfillset (&full); 3808 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2483 sigprocmask (SIG_SETMASK, &full, &prev);
2484#endif
2485 3809
2486 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 */
2487 3813
2488#ifndef _WIN32 3814 sigemptyset (&sigfd_set);
2489 sigprocmask (SIG_SETMASK, &prev, 0); 3815
2490#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 }
2491 } 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
2492 3832
2493 ev_start (EV_A_ (W)w, 1); 3833 ev_start (EV_A_ (W)w, 1);
2494 wlist_add (&signals [w->signum - 1].head, (WL)w); 3834 wlist_add (&signals [w->signum - 1].head, (WL)w);
2495 3835
2496 if (!((WL)w)->next) 3836 if (!((WL)w)->next)
3837# if EV_USE_SIGNALFD
3838 if (sigfd < 0) /*TODO*/
3839# endif
2497 { 3840 {
2498#if _WIN32 3841# ifdef _WIN32
3842 evpipe_init (EV_A);
3843
2499 signal (w->signum, ev_sighandler); 3844 signal (w->signum, ev_sighandler);
2500#else 3845# else
2501 struct sigaction sa; 3846 struct sigaction sa;
3847
3848 evpipe_init (EV_A);
3849
2502 sa.sa_handler = ev_sighandler; 3850 sa.sa_handler = ev_sighandler;
2503 sigfillset (&sa.sa_mask); 3851 sigfillset (&sa.sa_mask);
2504 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 */
2505 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 }
2506#endif 3861#endif
2507 } 3862 }
2508 3863
2509 EV_FREQUENT_CHECK; 3864 EV_FREQUENT_CHECK;
2510} 3865}
2511 3866
2512void noinline 3867void noinline
2513ev_signal_stop (EV_P_ ev_signal *w) 3868ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2514{ 3869{
2515 clear_pending (EV_A_ (W)w); 3870 clear_pending (EV_A_ (W)w);
2516 if (expect_false (!ev_is_active (w))) 3871 if (expect_false (!ev_is_active (w)))
2517 return; 3872 return;
2518 3873
… …
2520 3875
2521 wlist_del (&signals [w->signum - 1].head, (WL)w); 3876 wlist_del (&signals [w->signum - 1].head, (WL)w);
2522 ev_stop (EV_A_ (W)w); 3877 ev_stop (EV_A_ (W)w);
2523 3878
2524 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
2525 signal (w->signum, SIG_DFL); 3898 signal (w->signum, SIG_DFL);
3899 }
2526 3900
2527 EV_FREQUENT_CHECK; 3901 EV_FREQUENT_CHECK;
2528} 3902}
3903
3904#endif
3905
3906#if EV_CHILD_ENABLE
2529 3907
2530void 3908void
2531ev_child_start (EV_P_ ev_child *w) 3909ev_child_start (EV_P_ ev_child *w) EV_THROW
2532{ 3910{
2533#if EV_MULTIPLICITY 3911#if EV_MULTIPLICITY
2534 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));
2535#endif 3913#endif
2536 if (expect_false (ev_is_active (w))) 3914 if (expect_false (ev_is_active (w)))
2537 return; 3915 return;
2538 3916
2539 EV_FREQUENT_CHECK; 3917 EV_FREQUENT_CHECK;
2540 3918
2541 ev_start (EV_A_ (W)w, 1); 3919 ev_start (EV_A_ (W)w, 1);
2542 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3920 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2543 3921
2544 EV_FREQUENT_CHECK; 3922 EV_FREQUENT_CHECK;
2545} 3923}
2546 3924
2547void 3925void
2548ev_child_stop (EV_P_ ev_child *w) 3926ev_child_stop (EV_P_ ev_child *w) EV_THROW
2549{ 3927{
2550 clear_pending (EV_A_ (W)w); 3928 clear_pending (EV_A_ (W)w);
2551 if (expect_false (!ev_is_active (w))) 3929 if (expect_false (!ev_is_active (w)))
2552 return; 3930 return;
2553 3931
2554 EV_FREQUENT_CHECK; 3932 EV_FREQUENT_CHECK;
2555 3933
2556 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3934 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2557 ev_stop (EV_A_ (W)w); 3935 ev_stop (EV_A_ (W)w);
2558 3936
2559 EV_FREQUENT_CHECK; 3937 EV_FREQUENT_CHECK;
2560} 3938}
3939
3940#endif
2561 3941
2562#if EV_STAT_ENABLE 3942#if EV_STAT_ENABLE
2563 3943
2564# ifdef _WIN32 3944# ifdef _WIN32
2565# undef lstat 3945# undef lstat
… …
2571#define MIN_STAT_INTERVAL 0.1074891 3951#define MIN_STAT_INTERVAL 0.1074891
2572 3952
2573static 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);
2574 3954
2575#if EV_USE_INOTIFY 3955#if EV_USE_INOTIFY
2576# 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)
2577 3959
2578static void noinline 3960static void noinline
2579infy_add (EV_P_ ev_stat *w) 3961infy_add (EV_P_ ev_stat *w)
2580{ 3962{
2581 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 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);
2582 3967
2583 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 */
2584 { 3994 }
3995 else
3996 {
3997 /* can't use inotify, continue to stat */
2585 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3998 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2586 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2587 3999
2588 /* monitor some parent directory for speedup hints */ 4000 /* if path is not there, monitor some parent directory for speedup hints */
2589 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 4001 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2590 /* but an efficiency issue only */ 4002 /* but an efficiency issue only */
2591 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 4003 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2592 { 4004 {
2593 char path [4096]; 4005 char path [4096];
… …
2603 if (!pend || pend == path) 4015 if (!pend || pend == path)
2604 break; 4016 break;
2605 4017
2606 *pend = 0; 4018 *pend = 0;
2607 w->wd = inotify_add_watch (fs_fd, path, mask); 4019 w->wd = inotify_add_watch (fs_fd, path, mask);
2608 } 4020 }
2609 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 4021 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2610 } 4022 }
2611 } 4023 }
2612 4024
2613 if (w->wd >= 0) 4025 if (w->wd >= 0)
2614 {
2615 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);
2616 4027
2617 /* now local changes will be tracked by inotify, but remote changes won't */ 4028 /* now re-arm timer, if required */
2618 /* unless the filesystem it known to be local, we therefore still poll */ 4029 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2619 /* also do poll on <2.6.25, but with normal frequency */
2620 struct statfs sfs;
2621
2622 if (fs_2625 && !statfs (w->path, &sfs))
2623 if (sfs.f_type == 0x1373 /* devfs */
2624 || sfs.f_type == 0xEF53 /* ext2/3 */
2625 || sfs.f_type == 0x3153464a /* jfs */
2626 || sfs.f_type == 0x52654973 /* reiser3 */
2627 || sfs.f_type == 0x01021994 /* tempfs */
2628 || sfs.f_type == 0x58465342 /* xfs */)
2629 return;
2630
2631 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2632 ev_timer_again (EV_A_ &w->timer); 4030 ev_timer_again (EV_A_ &w->timer);
2633 } 4031 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2634} 4032}
2635 4033
2636static void noinline 4034static void noinline
2637infy_del (EV_P_ ev_stat *w) 4035infy_del (EV_P_ ev_stat *w)
2638{ 4036{
… …
2641 4039
2642 if (wd < 0) 4040 if (wd < 0)
2643 return; 4041 return;
2644 4042
2645 w->wd = -2; 4043 w->wd = -2;
2646 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 4044 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2647 wlist_del (&fs_hash [slot].head, (WL)w); 4045 wlist_del (&fs_hash [slot].head, (WL)w);
2648 4046
2649 /* remove this watcher, if others are watching it, they will rearm */ 4047 /* remove this watcher, if others are watching it, they will rearm */
2650 inotify_rm_watch (fs_fd, wd); 4048 inotify_rm_watch (fs_fd, wd);
2651} 4049}
… …
2653static void noinline 4051static void noinline
2654infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4052infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2655{ 4053{
2656 if (slot < 0) 4054 if (slot < 0)
2657 /* overflow, need to check for all hash slots */ 4055 /* overflow, need to check for all hash slots */
2658 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4056 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2659 infy_wd (EV_A_ slot, wd, ev); 4057 infy_wd (EV_A_ slot, wd, ev);
2660 else 4058 else
2661 { 4059 {
2662 WL w_; 4060 WL w_;
2663 4061
2664 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4062 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2665 { 4063 {
2666 ev_stat *w = (ev_stat *)w_; 4064 ev_stat *w = (ev_stat *)w_;
2667 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 */
2668 4066
2669 if (w->wd == wd || wd == -1) 4067 if (w->wd == wd || wd == -1)
2670 { 4068 {
2671 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4069 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2672 { 4070 {
2673 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);
2674 w->wd = -1; 4072 w->wd = -1;
2675 infy_add (EV_A_ w); /* re-add, no matter what */ 4073 infy_add (EV_A_ w); /* re-add, no matter what */
2676 } 4074 }
2677 4075
2678 stat_timer_cb (EV_A_ &w->timer, 0); 4076 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2683 4081
2684static void 4082static void
2685infy_cb (EV_P_ ev_io *w, int revents) 4083infy_cb (EV_P_ ev_io *w, int revents)
2686{ 4084{
2687 char buf [EV_INOTIFY_BUFSIZE]; 4085 char buf [EV_INOTIFY_BUFSIZE];
2688 struct inotify_event *ev = (struct inotify_event *)buf;
2689 int ofs; 4086 int ofs;
2690 int len = read (fs_fd, buf, sizeof (buf)); 4087 int len = read (fs_fd, buf, sizeof (buf));
2691 4088
2692 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);
2693 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 }
2694} 4095}
2695 4096
2696inline_size void 4097inline_size void ecb_cold
2697check_2625 (EV_P) 4098ev_check_2625 (EV_P)
2698{ 4099{
2699 /* kernels < 2.6.25 are borked 4100 /* kernels < 2.6.25 are borked
2700 * 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
2701 */ 4102 */
2702 struct utsname buf; 4103 if (ev_linux_version () < 0x020619)
2703 int major, minor, micro;
2704
2705 if (uname (&buf))
2706 return; 4104 return;
2707 4105
2708 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2709 return;
2710
2711 if (major < 2
2712 || (major == 2 && minor < 6)
2713 || (major == 2 && minor == 6 && micro < 25))
2714 return;
2715
2716 fs_2625 = 1; 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 ();
2717} 4118}
2718 4119
2719inline_size void 4120inline_size void
2720infy_init (EV_P) 4121infy_init (EV_P)
2721{ 4122{
2722 if (fs_fd != -2) 4123 if (fs_fd != -2)
2723 return; 4124 return;
2724 4125
2725 fs_fd = -1; 4126 fs_fd = -1;
2726 4127
2727 check_2625 (EV_A); 4128 ev_check_2625 (EV_A);
2728 4129
2729 fs_fd = inotify_init (); 4130 fs_fd = infy_newfd ();
2730 4131
2731 if (fs_fd >= 0) 4132 if (fs_fd >= 0)
2732 { 4133 {
4134 fd_intern (fs_fd);
2733 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4135 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2734 ev_set_priority (&fs_w, EV_MAXPRI); 4136 ev_set_priority (&fs_w, EV_MAXPRI);
2735 ev_io_start (EV_A_ &fs_w); 4137 ev_io_start (EV_A_ &fs_w);
4138 ev_unref (EV_A);
2736 } 4139 }
2737} 4140}
2738 4141
2739inline_size void 4142inline_size void
2740infy_fork (EV_P) 4143infy_fork (EV_P)
… …
2742 int slot; 4145 int slot;
2743 4146
2744 if (fs_fd < 0) 4147 if (fs_fd < 0)
2745 return; 4148 return;
2746 4149
4150 ev_ref (EV_A);
4151 ev_io_stop (EV_A_ &fs_w);
2747 close (fs_fd); 4152 close (fs_fd);
2748 fs_fd = inotify_init (); 4153 fs_fd = infy_newfd ();
2749 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
2750 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4163 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2751 { 4164 {
2752 WL w_ = fs_hash [slot].head; 4165 WL w_ = fs_hash [slot].head;
2753 fs_hash [slot].head = 0; 4166 fs_hash [slot].head = 0;
2754 4167
2755 while (w_) 4168 while (w_)
… …
2760 w->wd = -1; 4173 w->wd = -1;
2761 4174
2762 if (fs_fd >= 0) 4175 if (fs_fd >= 0)
2763 infy_add (EV_A_ w); /* re-add, no matter what */ 4176 infy_add (EV_A_ w); /* re-add, no matter what */
2764 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);
2765 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 }
2766 } 4184 }
2767 } 4185 }
2768} 4186}
2769 4187
2770#endif 4188#endif
… …
2774#else 4192#else
2775# define EV_LSTAT(p,b) lstat (p, b) 4193# define EV_LSTAT(p,b) lstat (p, b)
2776#endif 4194#endif
2777 4195
2778void 4196void
2779ev_stat_stat (EV_P_ ev_stat *w) 4197ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2780{ 4198{
2781 if (lstat (w->path, &w->attr) < 0) 4199 if (lstat (w->path, &w->attr) < 0)
2782 w->attr.st_nlink = 0; 4200 w->attr.st_nlink = 0;
2783 else if (!w->attr.st_nlink) 4201 else if (!w->attr.st_nlink)
2784 w->attr.st_nlink = 1; 4202 w->attr.st_nlink = 1;
… …
2787static void noinline 4205static void noinline
2788stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4206stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2789{ 4207{
2790 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4208 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2791 4209
2792 /* we copy this here each the time so that */ 4210 ev_statdata prev = w->attr;
2793 /* prev has the old value when the callback gets invoked */
2794 w->prev = w->attr;
2795 ev_stat_stat (EV_A_ w); 4211 ev_stat_stat (EV_A_ w);
2796 4212
2797 /* 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 */
2798 if ( 4214 if (
2799 w->prev.st_dev != w->attr.st_dev 4215 prev.st_dev != w->attr.st_dev
2800 || w->prev.st_ino != w->attr.st_ino 4216 || prev.st_ino != w->attr.st_ino
2801 || w->prev.st_mode != w->attr.st_mode 4217 || prev.st_mode != w->attr.st_mode
2802 || w->prev.st_nlink != w->attr.st_nlink 4218 || prev.st_nlink != w->attr.st_nlink
2803 || w->prev.st_uid != w->attr.st_uid 4219 || prev.st_uid != w->attr.st_uid
2804 || w->prev.st_gid != w->attr.st_gid 4220 || prev.st_gid != w->attr.st_gid
2805 || w->prev.st_rdev != w->attr.st_rdev 4221 || prev.st_rdev != w->attr.st_rdev
2806 || w->prev.st_size != w->attr.st_size 4222 || prev.st_size != w->attr.st_size
2807 || w->prev.st_atime != w->attr.st_atime 4223 || prev.st_atime != w->attr.st_atime
2808 || w->prev.st_mtime != w->attr.st_mtime 4224 || prev.st_mtime != w->attr.st_mtime
2809 || w->prev.st_ctime != w->attr.st_ctime 4225 || prev.st_ctime != w->attr.st_ctime
2810 ) { 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
2811 #if EV_USE_INOTIFY 4232 #if EV_USE_INOTIFY
2812 if (fs_fd >= 0) 4233 if (fs_fd >= 0)
2813 { 4234 {
2814 infy_del (EV_A_ w); 4235 infy_del (EV_A_ w);
2815 infy_add (EV_A_ w); 4236 infy_add (EV_A_ w);
… …
2820 ev_feed_event (EV_A_ w, EV_STAT); 4241 ev_feed_event (EV_A_ w, EV_STAT);
2821 } 4242 }
2822} 4243}
2823 4244
2824void 4245void
2825ev_stat_start (EV_P_ ev_stat *w) 4246ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2826{ 4247{
2827 if (expect_false (ev_is_active (w))) 4248 if (expect_false (ev_is_active (w)))
2828 return; 4249 return;
2829 4250
2830 ev_stat_stat (EV_A_ w); 4251 ev_stat_stat (EV_A_ w);
… …
2840 4261
2841 if (fs_fd >= 0) 4262 if (fs_fd >= 0)
2842 infy_add (EV_A_ w); 4263 infy_add (EV_A_ w);
2843 else 4264 else
2844#endif 4265#endif
4266 {
2845 ev_timer_again (EV_A_ &w->timer); 4267 ev_timer_again (EV_A_ &w->timer);
4268 ev_unref (EV_A);
4269 }
2846 4270
2847 ev_start (EV_A_ (W)w, 1); 4271 ev_start (EV_A_ (W)w, 1);
2848 4272
2849 EV_FREQUENT_CHECK; 4273 EV_FREQUENT_CHECK;
2850} 4274}
2851 4275
2852void 4276void
2853ev_stat_stop (EV_P_ ev_stat *w) 4277ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2854{ 4278{
2855 clear_pending (EV_A_ (W)w); 4279 clear_pending (EV_A_ (W)w);
2856 if (expect_false (!ev_is_active (w))) 4280 if (expect_false (!ev_is_active (w)))
2857 return; 4281 return;
2858 4282
2859 EV_FREQUENT_CHECK; 4283 EV_FREQUENT_CHECK;
2860 4284
2861#if EV_USE_INOTIFY 4285#if EV_USE_INOTIFY
2862 infy_del (EV_A_ w); 4286 infy_del (EV_A_ w);
2863#endif 4287#endif
4288
4289 if (ev_is_active (&w->timer))
4290 {
4291 ev_ref (EV_A);
2864 ev_timer_stop (EV_A_ &w->timer); 4292 ev_timer_stop (EV_A_ &w->timer);
4293 }
2865 4294
2866 ev_stop (EV_A_ (W)w); 4295 ev_stop (EV_A_ (W)w);
2867 4296
2868 EV_FREQUENT_CHECK; 4297 EV_FREQUENT_CHECK;
2869} 4298}
2870#endif 4299#endif
2871 4300
2872#if EV_IDLE_ENABLE 4301#if EV_IDLE_ENABLE
2873void 4302void
2874ev_idle_start (EV_P_ ev_idle *w) 4303ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2875{ 4304{
2876 if (expect_false (ev_is_active (w))) 4305 if (expect_false (ev_is_active (w)))
2877 return; 4306 return;
2878 4307
2879 pri_adjust (EV_A_ (W)w); 4308 pri_adjust (EV_A_ (W)w);
… …
2892 4321
2893 EV_FREQUENT_CHECK; 4322 EV_FREQUENT_CHECK;
2894} 4323}
2895 4324
2896void 4325void
2897ev_idle_stop (EV_P_ ev_idle *w) 4326ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2898{ 4327{
2899 clear_pending (EV_A_ (W)w); 4328 clear_pending (EV_A_ (W)w);
2900 if (expect_false (!ev_is_active (w))) 4329 if (expect_false (!ev_is_active (w)))
2901 return; 4330 return;
2902 4331
… …
2914 4343
2915 EV_FREQUENT_CHECK; 4344 EV_FREQUENT_CHECK;
2916} 4345}
2917#endif 4346#endif
2918 4347
4348#if EV_PREPARE_ENABLE
2919void 4349void
2920ev_prepare_start (EV_P_ ev_prepare *w) 4350ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2921{ 4351{
2922 if (expect_false (ev_is_active (w))) 4352 if (expect_false (ev_is_active (w)))
2923 return; 4353 return;
2924 4354
2925 EV_FREQUENT_CHECK; 4355 EV_FREQUENT_CHECK;
… …
2930 4360
2931 EV_FREQUENT_CHECK; 4361 EV_FREQUENT_CHECK;
2932} 4362}
2933 4363
2934void 4364void
2935ev_prepare_stop (EV_P_ ev_prepare *w) 4365ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2936{ 4366{
2937 clear_pending (EV_A_ (W)w); 4367 clear_pending (EV_A_ (W)w);
2938 if (expect_false (!ev_is_active (w))) 4368 if (expect_false (!ev_is_active (w)))
2939 return; 4369 return;
2940 4370
… …
2949 4379
2950 ev_stop (EV_A_ (W)w); 4380 ev_stop (EV_A_ (W)w);
2951 4381
2952 EV_FREQUENT_CHECK; 4382 EV_FREQUENT_CHECK;
2953} 4383}
4384#endif
2954 4385
4386#if EV_CHECK_ENABLE
2955void 4387void
2956ev_check_start (EV_P_ ev_check *w) 4388ev_check_start (EV_P_ ev_check *w) EV_THROW
2957{ 4389{
2958 if (expect_false (ev_is_active (w))) 4390 if (expect_false (ev_is_active (w)))
2959 return; 4391 return;
2960 4392
2961 EV_FREQUENT_CHECK; 4393 EV_FREQUENT_CHECK;
… …
2966 4398
2967 EV_FREQUENT_CHECK; 4399 EV_FREQUENT_CHECK;
2968} 4400}
2969 4401
2970void 4402void
2971ev_check_stop (EV_P_ ev_check *w) 4403ev_check_stop (EV_P_ ev_check *w) EV_THROW
2972{ 4404{
2973 clear_pending (EV_A_ (W)w); 4405 clear_pending (EV_A_ (W)w);
2974 if (expect_false (!ev_is_active (w))) 4406 if (expect_false (!ev_is_active (w)))
2975 return; 4407 return;
2976 4408
… …
2985 4417
2986 ev_stop (EV_A_ (W)w); 4418 ev_stop (EV_A_ (W)w);
2987 4419
2988 EV_FREQUENT_CHECK; 4420 EV_FREQUENT_CHECK;
2989} 4421}
4422#endif
2990 4423
2991#if EV_EMBED_ENABLE 4424#if EV_EMBED_ENABLE
2992void noinline 4425void noinline
2993ev_embed_sweep (EV_P_ ev_embed *w) 4426ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2994{ 4427{
2995 ev_loop (w->other, EVLOOP_NONBLOCK); 4428 ev_run (w->other, EVRUN_NOWAIT);
2996} 4429}
2997 4430
2998static void 4431static void
2999embed_io_cb (EV_P_ ev_io *io, int revents) 4432embed_io_cb (EV_P_ ev_io *io, int revents)
3000{ 4433{
3001 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4434 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3002 4435
3003 if (ev_cb (w)) 4436 if (ev_cb (w))
3004 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4437 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3005 else 4438 else
3006 ev_loop (w->other, EVLOOP_NONBLOCK); 4439 ev_run (w->other, EVRUN_NOWAIT);
3007} 4440}
3008 4441
3009static void 4442static void
3010embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4443embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3011{ 4444{
3012 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4445 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3013 4446
3014 { 4447 {
3015 struct ev_loop *loop = w->other; 4448 EV_P = w->other;
3016 4449
3017 while (fdchangecnt) 4450 while (fdchangecnt)
3018 { 4451 {
3019 fd_reify (EV_A); 4452 fd_reify (EV_A);
3020 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4453 ev_run (EV_A_ EVRUN_NOWAIT);
3021 } 4454 }
3022 } 4455 }
3023} 4456}
3024 4457
3025static void 4458static void
… …
3028 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));
3029 4462
3030 ev_embed_stop (EV_A_ w); 4463 ev_embed_stop (EV_A_ w);
3031 4464
3032 { 4465 {
3033 struct ev_loop *loop = w->other; 4466 EV_P = w->other;
3034 4467
3035 ev_loop_fork (EV_A); 4468 ev_loop_fork (EV_A);
3036 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4469 ev_run (EV_A_ EVRUN_NOWAIT);
3037 } 4470 }
3038 4471
3039 ev_embed_start (EV_A_ w); 4472 ev_embed_start (EV_A_ w);
3040} 4473}
3041 4474
… …
3046 ev_idle_stop (EV_A_ idle); 4479 ev_idle_stop (EV_A_ idle);
3047} 4480}
3048#endif 4481#endif
3049 4482
3050void 4483void
3051ev_embed_start (EV_P_ ev_embed *w) 4484ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3052{ 4485{
3053 if (expect_false (ev_is_active (w))) 4486 if (expect_false (ev_is_active (w)))
3054 return; 4487 return;
3055 4488
3056 { 4489 {
3057 struct ev_loop *loop = w->other; 4490 EV_P = w->other;
3058 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 ()));
3059 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);
3060 } 4493 }
3061 4494
3062 EV_FREQUENT_CHECK; 4495 EV_FREQUENT_CHECK;
… …
3077 4510
3078 EV_FREQUENT_CHECK; 4511 EV_FREQUENT_CHECK;
3079} 4512}
3080 4513
3081void 4514void
3082ev_embed_stop (EV_P_ ev_embed *w) 4515ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3083{ 4516{
3084 clear_pending (EV_A_ (W)w); 4517 clear_pending (EV_A_ (W)w);
3085 if (expect_false (!ev_is_active (w))) 4518 if (expect_false (!ev_is_active (w)))
3086 return; 4519 return;
3087 4520
… …
3089 4522
3090 ev_io_stop (EV_A_ &w->io); 4523 ev_io_stop (EV_A_ &w->io);
3091 ev_prepare_stop (EV_A_ &w->prepare); 4524 ev_prepare_stop (EV_A_ &w->prepare);
3092 ev_fork_stop (EV_A_ &w->fork); 4525 ev_fork_stop (EV_A_ &w->fork);
3093 4526
4527 ev_stop (EV_A_ (W)w);
4528
3094 EV_FREQUENT_CHECK; 4529 EV_FREQUENT_CHECK;
3095} 4530}
3096#endif 4531#endif
3097 4532
3098#if EV_FORK_ENABLE 4533#if EV_FORK_ENABLE
3099void 4534void
3100ev_fork_start (EV_P_ ev_fork *w) 4535ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3101{ 4536{
3102 if (expect_false (ev_is_active (w))) 4537 if (expect_false (ev_is_active (w)))
3103 return; 4538 return;
3104 4539
3105 EV_FREQUENT_CHECK; 4540 EV_FREQUENT_CHECK;
… …
3110 4545
3111 EV_FREQUENT_CHECK; 4546 EV_FREQUENT_CHECK;
3112} 4547}
3113 4548
3114void 4549void
3115ev_fork_stop (EV_P_ ev_fork *w) 4550ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3116{ 4551{
3117 clear_pending (EV_A_ (W)w); 4552 clear_pending (EV_A_ (W)w);
3118 if (expect_false (!ev_is_active (w))) 4553 if (expect_false (!ev_is_active (w)))
3119 return; 4554 return;
3120 4555
… …
3131 4566
3132 EV_FREQUENT_CHECK; 4567 EV_FREQUENT_CHECK;
3133} 4568}
3134#endif 4569#endif
3135 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
3136#if EV_ASYNC_ENABLE 4612#if EV_ASYNC_ENABLE
3137void 4613void
3138ev_async_start (EV_P_ ev_async *w) 4614ev_async_start (EV_P_ ev_async *w) EV_THROW
3139{ 4615{
3140 if (expect_false (ev_is_active (w))) 4616 if (expect_false (ev_is_active (w)))
3141 return; 4617 return;
4618
4619 w->sent = 0;
3142 4620
3143 evpipe_init (EV_A); 4621 evpipe_init (EV_A);
3144 4622
3145 EV_FREQUENT_CHECK; 4623 EV_FREQUENT_CHECK;
3146 4624
… …
3150 4628
3151 EV_FREQUENT_CHECK; 4629 EV_FREQUENT_CHECK;
3152} 4630}
3153 4631
3154void 4632void
3155ev_async_stop (EV_P_ ev_async *w) 4633ev_async_stop (EV_P_ ev_async *w) EV_THROW
3156{ 4634{
3157 clear_pending (EV_A_ (W)w); 4635 clear_pending (EV_A_ (W)w);
3158 if (expect_false (!ev_is_active (w))) 4636 if (expect_false (!ev_is_active (w)))
3159 return; 4637 return;
3160 4638
… …
3171 4649
3172 EV_FREQUENT_CHECK; 4650 EV_FREQUENT_CHECK;
3173} 4651}
3174 4652
3175void 4653void
3176ev_async_send (EV_P_ ev_async *w) 4654ev_async_send (EV_P_ ev_async *w) EV_THROW
3177{ 4655{
3178 w->sent = 1; 4656 w->sent = 1;
3179 evpipe_write (EV_A_ &gotasync); 4657 evpipe_write (EV_A_ &async_pending);
3180} 4658}
3181#endif 4659#endif
3182 4660
3183/*****************************************************************************/ 4661/*****************************************************************************/
3184 4662
… …
3218 4696
3219 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));
3220} 4698}
3221 4699
3222void 4700void
3223ev_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
3224{ 4702{
3225 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));
3226 4704
3227 if (expect_false (!once)) 4705 if (expect_false (!once))
3228 { 4706 {
3229 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4707 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3230 return; 4708 return;
3231 } 4709 }
3232 4710
3233 once->cb = cb; 4711 once->cb = cb;
3234 once->arg = arg; 4712 once->arg = arg;
… …
3249} 4727}
3250 4728
3251/*****************************************************************************/ 4729/*****************************************************************************/
3252 4730
3253#if EV_WALK_ENABLE 4731#if EV_WALK_ENABLE
3254void 4732void ecb_cold
3255ev_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
3256{ 4734{
3257 int i, j; 4735 int i, j;
3258 ev_watcher_list *wl, *wn; 4736 ev_watcher_list *wl, *wn;
3259 4737
3260 if (types & (EV_IO | EV_EMBED)) 4738 if (types & (EV_IO | EV_EMBED))
… …
3303 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4781 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3304#endif 4782#endif
3305 4783
3306#if EV_IDLE_ENABLE 4784#if EV_IDLE_ENABLE
3307 if (types & EV_IDLE) 4785 if (types & EV_IDLE)
3308 for (j = NUMPRI; i--; ) 4786 for (j = NUMPRI; j--; )
3309 for (i = idlecnt [j]; i--; ) 4787 for (i = idlecnt [j]; i--; )
3310 cb (EV_A_ EV_IDLE, idles [j][i]); 4788 cb (EV_A_ EV_IDLE, idles [j][i]);
3311#endif 4789#endif
3312 4790
3313#if EV_FORK_ENABLE 4791#if EV_FORK_ENABLE
… …
3321 if (types & EV_ASYNC) 4799 if (types & EV_ASYNC)
3322 for (i = asynccnt; i--; ) 4800 for (i = asynccnt; i--; )
3323 cb (EV_A_ EV_ASYNC, asyncs [i]); 4801 cb (EV_A_ EV_ASYNC, asyncs [i]);
3324#endif 4802#endif
3325 4803
4804#if EV_PREPARE_ENABLE
3326 if (types & EV_PREPARE) 4805 if (types & EV_PREPARE)
3327 for (i = preparecnt; i--; ) 4806 for (i = preparecnt; i--; )
3328#if EV_EMBED_ENABLE 4807# if EV_EMBED_ENABLE
3329 if (ev_cb (prepares [i]) != embed_prepare_cb) 4808 if (ev_cb (prepares [i]) != embed_prepare_cb)
3330#endif 4809# endif
3331 cb (EV_A_ EV_PREPARE, prepares [i]); 4810 cb (EV_A_ EV_PREPARE, prepares [i]);
4811#endif
3332 4812
4813#if EV_CHECK_ENABLE
3333 if (types & EV_CHECK) 4814 if (types & EV_CHECK)
3334 for (i = checkcnt; i--; ) 4815 for (i = checkcnt; i--; )
3335 cb (EV_A_ EV_CHECK, checks [i]); 4816 cb (EV_A_ EV_CHECK, checks [i]);
4817#endif
3336 4818
4819#if EV_SIGNAL_ENABLE
3337 if (types & EV_SIGNAL) 4820 if (types & EV_SIGNAL)
3338 for (i = 0; i < signalmax; ++i) 4821 for (i = 0; i < EV_NSIG - 1; ++i)
3339 for (wl = signals [i].head; wl; ) 4822 for (wl = signals [i].head; wl; )
3340 { 4823 {
3341 wn = wl->next; 4824 wn = wl->next;
3342 cb (EV_A_ EV_SIGNAL, wl); 4825 cb (EV_A_ EV_SIGNAL, wl);
3343 wl = wn; 4826 wl = wn;
3344 } 4827 }
4828#endif
3345 4829
4830#if EV_CHILD_ENABLE
3346 if (types & EV_CHILD) 4831 if (types & EV_CHILD)
3347 for (i = EV_PID_HASHSIZE; i--; ) 4832 for (i = (EV_PID_HASHSIZE); i--; )
3348 for (wl = childs [i]; wl; ) 4833 for (wl = childs [i]; wl; )
3349 { 4834 {
3350 wn = wl->next; 4835 wn = wl->next;
3351 cb (EV_A_ EV_CHILD, wl); 4836 cb (EV_A_ EV_CHILD, wl);
3352 wl = wn; 4837 wl = wn;
3353 } 4838 }
4839#endif
3354/* EV_STAT 0x00001000 /* stat data changed */ 4840/* EV_STAT 0x00001000 /* stat data changed */
3355/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4841/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3356} 4842}
3357#endif 4843#endif
3358 4844
3359#if EV_MULTIPLICITY 4845#if EV_MULTIPLICITY
3360 #include "ev_wrap.h" 4846 #include "ev_wrap.h"
3361#endif 4847#endif
3362 4848
3363#ifdef __cplusplus
3364}
3365#endif
3366

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