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Comparing libev/ev.c (file contents):
Revision 1.297 by root, Fri Jul 10 00:36:21 2009 UTC vs.
Revision 1.452 by root, Mon Feb 18 03:20:29 2013 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
138# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
139# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
154# endif
155
156# if HAVE_EVENTFD
157# ifndef EV_USE_EVENTFD
158# define EV_USE_EVENTFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
144# endif 163# endif
145 164
146#endif 165#endif
147 166
148#include <math.h>
149#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
150#include <fcntl.h> 169#include <fcntl.h>
151#include <stddef.h> 170#include <stddef.h>
152 171
153#include <stdio.h> 172#include <stdio.h>
154 173
155#include <assert.h> 174#include <assert.h>
156#include <errno.h> 175#include <errno.h>
157#include <sys/types.h> 176#include <sys/types.h>
158#include <time.h> 177#include <time.h>
178#include <limits.h>
159 179
160#include <signal.h> 180#include <signal.h>
161 181
162#ifdef EV_H 182#ifdef EV_H
163# include EV_H 183# include EV_H
164#else 184#else
165# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
166#endif 197#endif
167 198
168#ifndef _WIN32 199#ifndef _WIN32
169# include <sys/time.h> 200# include <sys/time.h>
170# include <sys/wait.h> 201# include <sys/wait.h>
171# include <unistd.h> 202# include <unistd.h>
172#else 203#else
173# include <io.h> 204# include <io.h>
174# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
175# include <windows.h> 207# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
178# endif 210# endif
211# undef EV_AVOID_STDIO
179#endif 212#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
180 221
181/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
223
224/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG
226/* use what's provided */
227#elif defined NSIG
228# define EV_NSIG (NSIG)
229#elif defined _NSIG
230# define EV_NSIG (_NSIG)
231#elif defined SIGMAX
232# define EV_NSIG (SIGMAX+1)
233#elif defined SIG_MAX
234# define EV_NSIG (SIG_MAX+1)
235#elif defined _SIG_MAX
236# define EV_NSIG (_SIG_MAX+1)
237#elif defined MAXSIG
238# define EV_NSIG (MAXSIG+1)
239#elif defined MAX_SIG
240# define EV_NSIG (MAX_SIG+1)
241#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else
246# error "unable to find value for NSIG, please report"
247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
249# define EV_NSIG 65
250#endif
251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
182 255
183#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
185# define EV_USE_CLOCK_SYSCALL 1 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 259# else
187# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
188# endif 261# endif
189#endif 262#endif
190 263
191#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 266# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 267# else
195# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
196# endif 269# endif
197#endif 270#endif
198 271
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 274#endif
202 275
203#ifndef EV_USE_NANOSLEEP 276#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 277# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 278# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 279# else
207# define EV_USE_NANOSLEEP 0 280# define EV_USE_NANOSLEEP 0
208# endif 281# endif
209#endif 282#endif
210 283
211#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 286#endif
214 287
215#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
216# ifdef _WIN32 289# ifdef _WIN32
217# define EV_USE_POLL 0 290# define EV_USE_POLL 0
218# else 291# else
219# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 293# endif
221#endif 294#endif
222 295
223#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 299# else
227# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
228# endif 301# endif
229#endif 302#endif
230 303
… …
236# define EV_USE_PORT 0 309# define EV_USE_PORT 0
237#endif 310#endif
238 311
239#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 315# else
243# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
244# endif 317# endif
245#endif 318#endif
246 319
247#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 321# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
249# define EV_PID_HASHSIZE 1
250# else
251# define EV_PID_HASHSIZE 16
252# endif
253#endif 322#endif
254 323
255#ifndef EV_INOTIFY_HASHSIZE 324#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 325# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_INOTIFY_HASHSIZE 1
258# else
259# define EV_INOTIFY_HASHSIZE 16
260# endif
261#endif 326#endif
262 327
263#ifndef EV_USE_EVENTFD 328#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 330# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 331# else
267# define EV_USE_EVENTFD 0 332# define EV_USE_EVENTFD 0
333# endif
334#endif
335
336#ifndef EV_USE_SIGNALFD
337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
338# define EV_USE_SIGNALFD EV_FEATURE_OS
339# else
340# define EV_USE_SIGNALFD 0
268# endif 341# endif
269#endif 342#endif
270 343
271#if 0 /* debugging */ 344#if 0 /* debugging */
272# define EV_VERIFY 3 345# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 346# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 347# define EV_HEAP_CACHE_AT 1
275#endif 348#endif
276 349
277#ifndef EV_VERIFY 350#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 352#endif
280 353
281#ifndef EV_USE_4HEAP 354#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 355# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 356#endif
284 357
285#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
360#endif
361
362#ifdef ANDROID
363/* supposedly, android doesn't typedef fd_mask */
364# undef EV_USE_SELECT
365# define EV_USE_SELECT 0
366/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
367# undef EV_USE_CLOCK_SYSCALL
368# define EV_USE_CLOCK_SYSCALL 0
369#endif
370
371/* aix's poll.h seems to cause lots of trouble */
372#ifdef _AIX
373/* AIX has a completely broken poll.h header */
374# undef EV_USE_POLL
375# define EV_USE_POLL 0
287#endif 376#endif
288 377
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 378/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290/* which makes programs even slower. might work on other unices, too. */ 379/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 380#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h> 381# include <sys/syscall.h>
293# ifdef SYS_clock_gettime 382# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 383# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1 385# define EV_USE_MONOTONIC 1
297# else 386# else
… …
316# undef EV_USE_INOTIFY 405# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 406# define EV_USE_INOTIFY 0
318#endif 407#endif
319 408
320#if !EV_USE_NANOSLEEP 409#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 410/* hp-ux has it in sys/time.h, which we unconditionally include above */
411# if !defined _WIN32 && !defined __hpux
322# include <sys/select.h> 412# include <sys/select.h>
323# endif 413# endif
324#endif 414#endif
325 415
326#if EV_USE_INOTIFY 416#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 417# include <sys/statfs.h>
329# include <sys/inotify.h> 418# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 419/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 420# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 421# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0 422# define EV_USE_INOTIFY 0
334# endif 423# endif
335#endif 424#endif
336 425
337#if EV_SELECT_IS_WINSOCKET
338# include <winsock.h>
339#endif
340
341#if EV_USE_EVENTFD 426#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h> 428# include <stdint.h>
344# ifdef __cplusplus 429# ifndef EFD_NONBLOCK
345extern "C" { 430# define EFD_NONBLOCK O_NONBLOCK
346# endif 431# endif
347int eventfd (unsigned int initval, int flags); 432# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 433# ifdef O_CLOEXEC
349} 434# define EFD_CLOEXEC O_CLOEXEC
435# else
436# define EFD_CLOEXEC 02000000
437# endif
350# endif 438# endif
439EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
440#endif
441
442#if EV_USE_SIGNALFD
443/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
444# include <stdint.h>
445# ifndef SFD_NONBLOCK
446# define SFD_NONBLOCK O_NONBLOCK
447# endif
448# ifndef SFD_CLOEXEC
449# ifdef O_CLOEXEC
450# define SFD_CLOEXEC O_CLOEXEC
451# else
452# define SFD_CLOEXEC 02000000
453# endif
454# endif
455EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
456
457struct signalfd_siginfo
458{
459 uint32_t ssi_signo;
460 char pad[128 - sizeof (uint32_t)];
461};
351#endif 462#endif
352 463
353/**/ 464/**/
354 465
355#if EV_VERIFY >= 3 466#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 467# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 468#else
358# define EV_FREQUENT_CHECK do { } while (0) 469# define EV_FREQUENT_CHECK do { } while (0)
359#endif 470#endif
360 471
361/* 472/*
362 * This is used to avoid floating point rounding problems. 473 * This is used to work around floating point rounding problems.
363 * It is added to ev_rt_now when scheduling periodics
364 * to ensure progress, time-wise, even when rounding
365 * errors are against us.
366 * This value is good at least till the year 4000. 474 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 475 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 476#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
477/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
370 478
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 479#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
372#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 480#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
374 481
482#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
483#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
484
485/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
486/* ECB.H BEGIN */
487/*
488 * libecb - http://software.schmorp.de/pkg/libecb
489 *
490 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
491 * Copyright (©) 2011 Emanuele Giaquinta
492 * All rights reserved.
493 *
494 * Redistribution and use in source and binary forms, with or without modifica-
495 * tion, are permitted provided that the following conditions are met:
496 *
497 * 1. Redistributions of source code must retain the above copyright notice,
498 * this list of conditions and the following disclaimer.
499 *
500 * 2. Redistributions in binary form must reproduce the above copyright
501 * notice, this list of conditions and the following disclaimer in the
502 * documentation and/or other materials provided with the distribution.
503 *
504 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
505 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
506 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
507 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
508 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
509 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
510 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
511 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
512 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
513 * OF THE POSSIBILITY OF SUCH DAMAGE.
514 */
515
516#ifndef ECB_H
517#define ECB_H
518
519/* 16 bits major, 16 bits minor */
520#define ECB_VERSION 0x00010002
521
522#ifdef _WIN32
523 typedef signed char int8_t;
524 typedef unsigned char uint8_t;
525 typedef signed short int16_t;
526 typedef unsigned short uint16_t;
527 typedef signed int int32_t;
528 typedef unsigned int uint32_t;
375#if __GNUC__ >= 4 529 #if __GNUC__
376# define expect(expr,value) __builtin_expect ((expr),(value)) 530 typedef signed long long int64_t;
377# define noinline __attribute__ ((noinline)) 531 typedef unsigned long long uint64_t;
532 #else /* _MSC_VER || __BORLANDC__ */
533 typedef signed __int64 int64_t;
534 typedef unsigned __int64 uint64_t;
535 #endif
536 #ifdef _WIN64
537 #define ECB_PTRSIZE 8
538 typedef uint64_t uintptr_t;
539 typedef int64_t intptr_t;
540 #else
541 #define ECB_PTRSIZE 4
542 typedef uint32_t uintptr_t;
543 typedef int32_t intptr_t;
544 #endif
378#else 545#else
379# define expect(expr,value) (expr) 546 #include <inttypes.h>
380# define noinline 547 #if UINTMAX_MAX > 0xffffffffU
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 548 #define ECB_PTRSIZE 8
382# define inline 549 #else
550 #define ECB_PTRSIZE 4
551 #endif
383# endif 552#endif
553
554/* many compilers define _GNUC_ to some versions but then only implement
555 * what their idiot authors think are the "more important" extensions,
556 * causing enormous grief in return for some better fake benchmark numbers.
557 * or so.
558 * we try to detect these and simply assume they are not gcc - if they have
559 * an issue with that they should have done it right in the first place.
560 */
561#ifndef ECB_GCC_VERSION
562 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
563 #define ECB_GCC_VERSION(major,minor) 0
564 #else
565 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
384#endif 566 #endif
567#endif
385 568
569#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
570#define ECB_C99 (__STDC_VERSION__ >= 199901L)
571#define ECB_C11 (__STDC_VERSION__ >= 201112L)
572#define ECB_CPP (__cplusplus+0)
573#define ECB_CPP11 (__cplusplus >= 201103L)
574
575#if ECB_CPP
576 #define ECB_EXTERN_C extern "C"
577 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
578 #define ECB_EXTERN_C_END }
579#else
580 #define ECB_EXTERN_C extern
581 #define ECB_EXTERN_C_BEG
582 #define ECB_EXTERN_C_END
583#endif
584
585/*****************************************************************************/
586
587/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
588/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
589
590#if ECB_NO_THREADS
591 #define ECB_NO_SMP 1
592#endif
593
594#if ECB_NO_SMP
595 #define ECB_MEMORY_FENCE do { } while (0)
596#endif
597
598#ifndef ECB_MEMORY_FENCE
599 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
600 #if __i386 || __i386__
601 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
602 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
603 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
604 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
606 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
607 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
608 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
609 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
610 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
611 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
612 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
613 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
614 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
616 #elif __sparc || __sparc__
617 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
618 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
619 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
620 #elif defined __s390__ || defined __s390x__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
622 #elif defined __mips__
623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
624 #elif defined __alpha__
625 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
626 #elif defined __hppa__
627 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
629 #elif defined __ia64__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
631 #endif
632 #endif
633#endif
634
635#ifndef ECB_MEMORY_FENCE
636 #if ECB_GCC_VERSION(4,7)
637 /* see comment below (stdatomic.h) about the C11 memory model. */
638 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
639
640 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
641 * without risking compile time errors with other compilers. We *could*
642 * define our own ecb_clang_has_feature, but I just can't be bothered to work
643 * around this shit time and again.
644 * #elif defined __clang && __has_feature (cxx_atomic)
645 * // see comment below (stdatomic.h) about the C11 memory model.
646 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
647 */
648
649 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
650 #define ECB_MEMORY_FENCE __sync_synchronize ()
651 #elif _MSC_VER >= 1400 /* VC++ 2005 */
652 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
653 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
654 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
655 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
656 #elif defined _WIN32
657 #include <WinNT.h>
658 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
659 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
660 #include <mbarrier.h>
661 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
662 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
663 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
664 #elif __xlC__
665 #define ECB_MEMORY_FENCE __sync ()
666 #endif
667#endif
668
669#ifndef ECB_MEMORY_FENCE
670 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
671 /* we assume that these memory fences work on all variables/all memory accesses, */
672 /* not just C11 atomics and atomic accesses */
673 #include <stdatomic.h>
674 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
675 /* any fence other than seq_cst, which isn't very efficient for us. */
676 /* Why that is, we don't know - either the C11 memory model is quite useless */
677 /* for most usages, or gcc and clang have a bug */
678 /* I *currently* lean towards the latter, and inefficiently implement */
679 /* all three of ecb's fences as a seq_cst fence */
680 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
681 #endif
682#endif
683
684#ifndef ECB_MEMORY_FENCE
685 #if !ECB_AVOID_PTHREADS
686 /*
687 * if you get undefined symbol references to pthread_mutex_lock,
688 * or failure to find pthread.h, then you should implement
689 * the ECB_MEMORY_FENCE operations for your cpu/compiler
690 * OR provide pthread.h and link against the posix thread library
691 * of your system.
692 */
693 #include <pthread.h>
694 #define ECB_NEEDS_PTHREADS 1
695 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
696
697 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
698 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
699 #endif
700#endif
701
702#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
703 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
704#endif
705
706#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
707 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
708#endif
709
710/*****************************************************************************/
711
712#if __cplusplus
713 #define ecb_inline static inline
714#elif ECB_GCC_VERSION(2,5)
715 #define ecb_inline static __inline__
716#elif ECB_C99
717 #define ecb_inline static inline
718#else
719 #define ecb_inline static
720#endif
721
722#if ECB_GCC_VERSION(3,3)
723 #define ecb_restrict __restrict__
724#elif ECB_C99
725 #define ecb_restrict restrict
726#else
727 #define ecb_restrict
728#endif
729
730typedef int ecb_bool;
731
732#define ECB_CONCAT_(a, b) a ## b
733#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
734#define ECB_STRINGIFY_(a) # a
735#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
736
737#define ecb_function_ ecb_inline
738
739#if ECB_GCC_VERSION(3,1)
740 #define ecb_attribute(attrlist) __attribute__(attrlist)
741 #define ecb_is_constant(expr) __builtin_constant_p (expr)
742 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
743 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
744#else
745 #define ecb_attribute(attrlist)
746 #define ecb_is_constant(expr) 0
747 #define ecb_expect(expr,value) (expr)
748 #define ecb_prefetch(addr,rw,locality)
749#endif
750
751/* no emulation for ecb_decltype */
752#if ECB_GCC_VERSION(4,5)
753 #define ecb_decltype(x) __decltype(x)
754#elif ECB_GCC_VERSION(3,0)
755 #define ecb_decltype(x) __typeof(x)
756#endif
757
758#define ecb_noinline ecb_attribute ((__noinline__))
759#define ecb_unused ecb_attribute ((__unused__))
760#define ecb_const ecb_attribute ((__const__))
761#define ecb_pure ecb_attribute ((__pure__))
762
763#if ECB_C11
764 #define ecb_noreturn _Noreturn
765#else
766 #define ecb_noreturn ecb_attribute ((__noreturn__))
767#endif
768
769#if ECB_GCC_VERSION(4,3)
770 #define ecb_artificial ecb_attribute ((__artificial__))
771 #define ecb_hot ecb_attribute ((__hot__))
772 #define ecb_cold ecb_attribute ((__cold__))
773#else
774 #define ecb_artificial
775 #define ecb_hot
776 #define ecb_cold
777#endif
778
779/* put around conditional expressions if you are very sure that the */
780/* expression is mostly true or mostly false. note that these return */
781/* booleans, not the expression. */
386#define expect_false(expr) expect ((expr) != 0, 0) 782#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 783#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
784/* for compatibility to the rest of the world */
785#define ecb_likely(expr) ecb_expect_true (expr)
786#define ecb_unlikely(expr) ecb_expect_false (expr)
787
788/* count trailing zero bits and count # of one bits */
789#if ECB_GCC_VERSION(3,4)
790 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
791 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
792 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
793 #define ecb_ctz32(x) __builtin_ctz (x)
794 #define ecb_ctz64(x) __builtin_ctzll (x)
795 #define ecb_popcount32(x) __builtin_popcount (x)
796 /* no popcountll */
797#else
798 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
799 ecb_function_ int
800 ecb_ctz32 (uint32_t x)
801 {
802 int r = 0;
803
804 x &= ~x + 1; /* this isolates the lowest bit */
805
806#if ECB_branchless_on_i386
807 r += !!(x & 0xaaaaaaaa) << 0;
808 r += !!(x & 0xcccccccc) << 1;
809 r += !!(x & 0xf0f0f0f0) << 2;
810 r += !!(x & 0xff00ff00) << 3;
811 r += !!(x & 0xffff0000) << 4;
812#else
813 if (x & 0xaaaaaaaa) r += 1;
814 if (x & 0xcccccccc) r += 2;
815 if (x & 0xf0f0f0f0) r += 4;
816 if (x & 0xff00ff00) r += 8;
817 if (x & 0xffff0000) r += 16;
818#endif
819
820 return r;
821 }
822
823 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
824 ecb_function_ int
825 ecb_ctz64 (uint64_t x)
826 {
827 int shift = x & 0xffffffffU ? 0 : 32;
828 return ecb_ctz32 (x >> shift) + shift;
829 }
830
831 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
832 ecb_function_ int
833 ecb_popcount32 (uint32_t x)
834 {
835 x -= (x >> 1) & 0x55555555;
836 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
837 x = ((x >> 4) + x) & 0x0f0f0f0f;
838 x *= 0x01010101;
839
840 return x >> 24;
841 }
842
843 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
844 ecb_function_ int ecb_ld32 (uint32_t x)
845 {
846 int r = 0;
847
848 if (x >> 16) { x >>= 16; r += 16; }
849 if (x >> 8) { x >>= 8; r += 8; }
850 if (x >> 4) { x >>= 4; r += 4; }
851 if (x >> 2) { x >>= 2; r += 2; }
852 if (x >> 1) { r += 1; }
853
854 return r;
855 }
856
857 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
858 ecb_function_ int ecb_ld64 (uint64_t x)
859 {
860 int r = 0;
861
862 if (x >> 32) { x >>= 32; r += 32; }
863
864 return r + ecb_ld32 (x);
865 }
866#endif
867
868ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
869ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
870ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
871ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
872
873ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
874ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
875{
876 return ( (x * 0x0802U & 0x22110U)
877 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
878}
879
880ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
881ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
882{
883 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
884 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
885 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
886 x = ( x >> 8 ) | ( x << 8);
887
888 return x;
889}
890
891ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
892ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
893{
894 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
895 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
896 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
897 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
898 x = ( x >> 16 ) | ( x << 16);
899
900 return x;
901}
902
903/* popcount64 is only available on 64 bit cpus as gcc builtin */
904/* so for this version we are lazy */
905ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
906ecb_function_ int
907ecb_popcount64 (uint64_t x)
908{
909 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
910}
911
912ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
913ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
914ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
915ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
916ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
917ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
918ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
919ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
920
921ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
922ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
923ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
924ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
925ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
926ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
927ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
928ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
929
930#if ECB_GCC_VERSION(4,3)
931 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
932 #define ecb_bswap32(x) __builtin_bswap32 (x)
933 #define ecb_bswap64(x) __builtin_bswap64 (x)
934#else
935 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
936 ecb_function_ uint16_t
937 ecb_bswap16 (uint16_t x)
938 {
939 return ecb_rotl16 (x, 8);
940 }
941
942 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
943 ecb_function_ uint32_t
944 ecb_bswap32 (uint32_t x)
945 {
946 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
947 }
948
949 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
950 ecb_function_ uint64_t
951 ecb_bswap64 (uint64_t x)
952 {
953 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
954 }
955#endif
956
957#if ECB_GCC_VERSION(4,5)
958 #define ecb_unreachable() __builtin_unreachable ()
959#else
960 /* this seems to work fine, but gcc always emits a warning for it :/ */
961 ecb_inline void ecb_unreachable (void) ecb_noreturn;
962 ecb_inline void ecb_unreachable (void) { }
963#endif
964
965/* try to tell the compiler that some condition is definitely true */
966#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
967
968ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
969ecb_inline unsigned char
970ecb_byteorder_helper (void)
971{
972 /* the union code still generates code under pressure in gcc, */
973 /* but less than using pointers, and always seems to */
974 /* successfully return a constant. */
975 /* the reason why we have this horrible preprocessor mess */
976 /* is to avoid it in all cases, at least on common architectures */
977 /* or when using a recent enough gcc version (>= 4.6) */
978#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
979 return 0x44;
980#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
981 return 0x44;
982#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
983 return 0x11;
984#else
985 union
986 {
987 uint32_t i;
988 uint8_t c;
989 } u = { 0x11223344 };
990 return u.c;
991#endif
992}
993
994ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
995ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
996ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
997ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
998
999#if ECB_GCC_VERSION(3,0) || ECB_C99
1000 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1001#else
1002 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1003#endif
1004
1005#if __cplusplus
1006 template<typename T>
1007 static inline T ecb_div_rd (T val, T div)
1008 {
1009 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1010 }
1011 template<typename T>
1012 static inline T ecb_div_ru (T val, T div)
1013 {
1014 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1015 }
1016#else
1017 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1018 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1019#endif
1020
1021#if ecb_cplusplus_does_not_suck
1022 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1023 template<typename T, int N>
1024 static inline int ecb_array_length (const T (&arr)[N])
1025 {
1026 return N;
1027 }
1028#else
1029 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1030#endif
1031
1032/*******************************************************************************/
1033/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1034
1035/* basically, everything uses "ieee pure-endian" floating point numbers */
1036/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1037#if 0 \
1038 || __i386 || __i386__ \
1039 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1040 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1041 || defined __arm__ && defined __ARM_EABI__ \
1042 || defined __s390__ || defined __s390x__ \
1043 || defined __mips__ \
1044 || defined __alpha__ \
1045 || defined __hppa__ \
1046 || defined __ia64__ \
1047 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1048 #define ECB_STDFP 1
1049 #include <string.h> /* for memcpy */
1050#else
1051 #define ECB_STDFP 0
1052 #include <math.h> /* for frexp*, ldexp* */
1053#endif
1054
1055#ifndef ECB_NO_LIBM
1056
1057 /* convert a float to ieee single/binary32 */
1058 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1059 ecb_function_ uint32_t
1060 ecb_float_to_binary32 (float x)
1061 {
1062 uint32_t r;
1063
1064 #if ECB_STDFP
1065 memcpy (&r, &x, 4);
1066 #else
1067 /* slow emulation, works for anything but -0 */
1068 uint32_t m;
1069 int e;
1070
1071 if (x == 0e0f ) return 0x00000000U;
1072 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1073 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1074 if (x != x ) return 0x7fbfffffU;
1075
1076 m = frexpf (x, &e) * 0x1000000U;
1077
1078 r = m & 0x80000000U;
1079
1080 if (r)
1081 m = -m;
1082
1083 if (e <= -126)
1084 {
1085 m &= 0xffffffU;
1086 m >>= (-125 - e);
1087 e = -126;
1088 }
1089
1090 r |= (e + 126) << 23;
1091 r |= m & 0x7fffffU;
1092 #endif
1093
1094 return r;
1095 }
1096
1097 /* converts an ieee single/binary32 to a float */
1098 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1099 ecb_function_ float
1100 ecb_binary32_to_float (uint32_t x)
1101 {
1102 float r;
1103
1104 #if ECB_STDFP
1105 memcpy (&r, &x, 4);
1106 #else
1107 /* emulation, only works for normals and subnormals and +0 */
1108 int neg = x >> 31;
1109 int e = (x >> 23) & 0xffU;
1110
1111 x &= 0x7fffffU;
1112
1113 if (e)
1114 x |= 0x800000U;
1115 else
1116 e = 1;
1117
1118 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1119 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1120
1121 r = neg ? -r : r;
1122 #endif
1123
1124 return r;
1125 }
1126
1127 /* convert a double to ieee double/binary64 */
1128 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1129 ecb_function_ uint64_t
1130 ecb_double_to_binary64 (double x)
1131 {
1132 uint64_t r;
1133
1134 #if ECB_STDFP
1135 memcpy (&r, &x, 8);
1136 #else
1137 /* slow emulation, works for anything but -0 */
1138 uint64_t m;
1139 int e;
1140
1141 if (x == 0e0 ) return 0x0000000000000000U;
1142 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1143 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1144 if (x != x ) return 0X7ff7ffffffffffffU;
1145
1146 m = frexp (x, &e) * 0x20000000000000U;
1147
1148 r = m & 0x8000000000000000;;
1149
1150 if (r)
1151 m = -m;
1152
1153 if (e <= -1022)
1154 {
1155 m &= 0x1fffffffffffffU;
1156 m >>= (-1021 - e);
1157 e = -1022;
1158 }
1159
1160 r |= ((uint64_t)(e + 1022)) << 52;
1161 r |= m & 0xfffffffffffffU;
1162 #endif
1163
1164 return r;
1165 }
1166
1167 /* converts an ieee double/binary64 to a double */
1168 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1169 ecb_function_ double
1170 ecb_binary64_to_double (uint64_t x)
1171 {
1172 double r;
1173
1174 #if ECB_STDFP
1175 memcpy (&r, &x, 8);
1176 #else
1177 /* emulation, only works for normals and subnormals and +0 */
1178 int neg = x >> 63;
1179 int e = (x >> 52) & 0x7ffU;
1180
1181 x &= 0xfffffffffffffU;
1182
1183 if (e)
1184 x |= 0x10000000000000U;
1185 else
1186 e = 1;
1187
1188 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1189 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1190
1191 r = neg ? -r : r;
1192 #endif
1193
1194 return r;
1195 }
1196
1197#endif
1198
1199#endif
1200
1201/* ECB.H END */
1202
1203#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1204/* if your architecture doesn't need memory fences, e.g. because it is
1205 * single-cpu/core, or if you use libev in a project that doesn't use libev
1206 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1207 * libev, in which cases the memory fences become nops.
1208 * alternatively, you can remove this #error and link against libpthread,
1209 * which will then provide the memory fences.
1210 */
1211# error "memory fences not defined for your architecture, please report"
1212#endif
1213
1214#ifndef ECB_MEMORY_FENCE
1215# define ECB_MEMORY_FENCE do { } while (0)
1216# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1217# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1218#endif
1219
1220#define expect_false(cond) ecb_expect_false (cond)
1221#define expect_true(cond) ecb_expect_true (cond)
1222#define noinline ecb_noinline
1223
388#define inline_size static inline 1224#define inline_size ecb_inline
389 1225
390#if EV_MINIMAL 1226#if EV_FEATURE_CODE
1227# define inline_speed ecb_inline
1228#else
391# define inline_speed static noinline 1229# define inline_speed static noinline
392#else
393# define inline_speed static inline
394#endif 1230#endif
395 1231
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1232#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 1233
398#if EV_MINPRI == EV_MAXPRI 1234#if EV_MINPRI == EV_MAXPRI
… …
411#define ev_active(w) ((W)(w))->active 1247#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 1248#define ev_at(w) ((WT)(w))->at
413 1249
414#if EV_USE_REALTIME 1250#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1251/* sig_atomic_t is used to avoid per-thread variables or locking but still */
416/* giving it a reasonably high chance of working on typical architetcures */ 1252/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1253static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 1254#endif
419 1255
420#if EV_USE_MONOTONIC 1256#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1257static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 1258#endif
423 1259
1260#ifndef EV_FD_TO_WIN32_HANDLE
1261# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1262#endif
1263#ifndef EV_WIN32_HANDLE_TO_FD
1264# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1265#endif
1266#ifndef EV_WIN32_CLOSE_FD
1267# define EV_WIN32_CLOSE_FD(fd) close (fd)
1268#endif
1269
424#ifdef _WIN32 1270#ifdef _WIN32
425# include "ev_win32.c" 1271# include "ev_win32.c"
426#endif 1272#endif
427 1273
428/*****************************************************************************/ 1274/*****************************************************************************/
429 1275
1276/* define a suitable floor function (only used by periodics atm) */
1277
1278#if EV_USE_FLOOR
1279# include <math.h>
1280# define ev_floor(v) floor (v)
1281#else
1282
1283#include <float.h>
1284
1285/* a floor() replacement function, should be independent of ev_tstamp type */
1286static ev_tstamp noinline
1287ev_floor (ev_tstamp v)
1288{
1289 /* the choice of shift factor is not terribly important */
1290#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1291 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1292#else
1293 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1294#endif
1295
1296 /* argument too large for an unsigned long? */
1297 if (expect_false (v >= shift))
1298 {
1299 ev_tstamp f;
1300
1301 if (v == v - 1.)
1302 return v; /* very large number */
1303
1304 f = shift * ev_floor (v * (1. / shift));
1305 return f + ev_floor (v - f);
1306 }
1307
1308 /* special treatment for negative args? */
1309 if (expect_false (v < 0.))
1310 {
1311 ev_tstamp f = -ev_floor (-v);
1312
1313 return f - (f == v ? 0 : 1);
1314 }
1315
1316 /* fits into an unsigned long */
1317 return (unsigned long)v;
1318}
1319
1320#endif
1321
1322/*****************************************************************************/
1323
1324#ifdef __linux
1325# include <sys/utsname.h>
1326#endif
1327
1328static unsigned int noinline ecb_cold
1329ev_linux_version (void)
1330{
1331#ifdef __linux
1332 unsigned int v = 0;
1333 struct utsname buf;
1334 int i;
1335 char *p = buf.release;
1336
1337 if (uname (&buf))
1338 return 0;
1339
1340 for (i = 3+1; --i; )
1341 {
1342 unsigned int c = 0;
1343
1344 for (;;)
1345 {
1346 if (*p >= '0' && *p <= '9')
1347 c = c * 10 + *p++ - '0';
1348 else
1349 {
1350 p += *p == '.';
1351 break;
1352 }
1353 }
1354
1355 v = (v << 8) | c;
1356 }
1357
1358 return v;
1359#else
1360 return 0;
1361#endif
1362}
1363
1364/*****************************************************************************/
1365
1366#if EV_AVOID_STDIO
1367static void noinline ecb_cold
1368ev_printerr (const char *msg)
1369{
1370 write (STDERR_FILENO, msg, strlen (msg));
1371}
1372#endif
1373
430static void (*syserr_cb)(const char *msg); 1374static void (*syserr_cb)(const char *msg) EV_THROW;
431 1375
432void 1376void ecb_cold
433ev_set_syserr_cb (void (*cb)(const char *msg)) 1377ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
434{ 1378{
435 syserr_cb = cb; 1379 syserr_cb = cb;
436} 1380}
437 1381
438static void noinline 1382static void noinline ecb_cold
439ev_syserr (const char *msg) 1383ev_syserr (const char *msg)
440{ 1384{
441 if (!msg) 1385 if (!msg)
442 msg = "(libev) system error"; 1386 msg = "(libev) system error";
443 1387
444 if (syserr_cb) 1388 if (syserr_cb)
445 syserr_cb (msg); 1389 syserr_cb (msg);
446 else 1390 else
447 { 1391 {
1392#if EV_AVOID_STDIO
1393 ev_printerr (msg);
1394 ev_printerr (": ");
1395 ev_printerr (strerror (errno));
1396 ev_printerr ("\n");
1397#else
448 perror (msg); 1398 perror (msg);
1399#endif
449 abort (); 1400 abort ();
450 } 1401 }
451} 1402}
452 1403
453static void * 1404static void *
454ev_realloc_emul (void *ptr, long size) 1405ev_realloc_emul (void *ptr, long size) EV_THROW
455{ 1406{
456 /* some systems, notably openbsd and darwin, fail to properly 1407 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and 1408 * implement realloc (x, 0) (as required by both ansi c-89 and
458 * the single unix specification, so work around them here. 1409 * the single unix specification, so work around them here.
1410 * recently, also (at least) fedora and debian started breaking it,
1411 * despite documenting it otherwise.
459 */ 1412 */
460 1413
461 if (size) 1414 if (size)
462 return realloc (ptr, size); 1415 return realloc (ptr, size);
463 1416
464 free (ptr); 1417 free (ptr);
465 return 0; 1418 return 0;
466} 1419}
467 1420
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1421static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
469 1422
470void 1423void ecb_cold
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 1424ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
472{ 1425{
473 alloc = cb; 1426 alloc = cb;
474} 1427}
475 1428
476inline_speed void * 1429inline_speed void *
… …
478{ 1431{
479 ptr = alloc (ptr, size); 1432 ptr = alloc (ptr, size);
480 1433
481 if (!ptr && size) 1434 if (!ptr && size)
482 { 1435 {
1436#if EV_AVOID_STDIO
1437 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1438#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1439 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1440#endif
484 abort (); 1441 abort ();
485 } 1442 }
486 1443
487 return ptr; 1444 return ptr;
488} 1445}
… …
490#define ev_malloc(size) ev_realloc (0, (size)) 1447#define ev_malloc(size) ev_realloc (0, (size))
491#define ev_free(ptr) ev_realloc ((ptr), 0) 1448#define ev_free(ptr) ev_realloc ((ptr), 0)
492 1449
493/*****************************************************************************/ 1450/*****************************************************************************/
494 1451
1452/* set in reify when reification needed */
1453#define EV_ANFD_REIFY 1
1454
495/* file descriptor info structure */ 1455/* file descriptor info structure */
496typedef struct 1456typedef struct
497{ 1457{
498 WL head; 1458 WL head;
499 unsigned char events; /* the events watched for */ 1459 unsigned char events; /* the events watched for */
500 unsigned char reify; /* flag set when this ANFD needs reification */ 1460 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
501 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1461 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
502 unsigned char unused; 1462 unsigned char unused;
503#if EV_USE_EPOLL 1463#if EV_USE_EPOLL
504 unsigned int egen; /* generation counter to counter epoll bugs */ 1464 unsigned int egen; /* generation counter to counter epoll bugs */
505#endif 1465#endif
506#if EV_SELECT_IS_WINSOCKET 1466#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
507 SOCKET handle; 1467 SOCKET handle;
1468#endif
1469#if EV_USE_IOCP
1470 OVERLAPPED or, ow;
508#endif 1471#endif
509} ANFD; 1472} ANFD;
510 1473
511/* stores the pending event set for a given watcher */ 1474/* stores the pending event set for a given watcher */
512typedef struct 1475typedef struct
… …
554 #undef VAR 1517 #undef VAR
555 }; 1518 };
556 #include "ev_wrap.h" 1519 #include "ev_wrap.h"
557 1520
558 static struct ev_loop default_loop_struct; 1521 static struct ev_loop default_loop_struct;
559 struct ev_loop *ev_default_loop_ptr; 1522 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
560 1523
561#else 1524#else
562 1525
563 ev_tstamp ev_rt_now; 1526 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
564 #define VAR(name,decl) static decl; 1527 #define VAR(name,decl) static decl;
565 #include "ev_vars.h" 1528 #include "ev_vars.h"
566 #undef VAR 1529 #undef VAR
567 1530
568 static int ev_default_loop_ptr; 1531 static int ev_default_loop_ptr;
569 1532
570#endif 1533#endif
571 1534
572#if EV_MINIMAL < 2 1535#if EV_FEATURE_API
573# define EV_SUSPEND_CB if (expect_false (suspend_cb)) suspend_cb (EV_A)
574# define EV_RESUME_CB if (expect_false (resume_cb )) resume_cb (EV_A) 1536# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1537# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
575# define EV_INVOKE_PENDING invoke_cb (EV_A) 1538# define EV_INVOKE_PENDING invoke_cb (EV_A)
576#else 1539#else
577# define EV_SUSPEND_CB (void)0
578# define EV_RESUME_CB (void)0 1540# define EV_RELEASE_CB (void)0
1541# define EV_ACQUIRE_CB (void)0
579# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1542# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
580#endif 1543#endif
1544
1545#define EVBREAK_RECURSE 0x80
581 1546
582/*****************************************************************************/ 1547/*****************************************************************************/
583 1548
584#ifndef EV_HAVE_EV_TIME 1549#ifndef EV_HAVE_EV_TIME
585ev_tstamp 1550ev_tstamp
586ev_time (void) 1551ev_time (void) EV_THROW
587{ 1552{
588#if EV_USE_REALTIME 1553#if EV_USE_REALTIME
589 if (expect_true (have_realtime)) 1554 if (expect_true (have_realtime))
590 { 1555 {
591 struct timespec ts; 1556 struct timespec ts;
… …
615 return ev_time (); 1580 return ev_time ();
616} 1581}
617 1582
618#if EV_MULTIPLICITY 1583#if EV_MULTIPLICITY
619ev_tstamp 1584ev_tstamp
620ev_now (EV_P) 1585ev_now (EV_P) EV_THROW
621{ 1586{
622 return ev_rt_now; 1587 return ev_rt_now;
623} 1588}
624#endif 1589#endif
625 1590
626void 1591void
627ev_sleep (ev_tstamp delay) 1592ev_sleep (ev_tstamp delay) EV_THROW
628{ 1593{
629 if (delay > 0.) 1594 if (delay > 0.)
630 { 1595 {
631#if EV_USE_NANOSLEEP 1596#if EV_USE_NANOSLEEP
632 struct timespec ts; 1597 struct timespec ts;
633 1598
634 ts.tv_sec = (time_t)delay; 1599 EV_TS_SET (ts, delay);
635 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
636
637 nanosleep (&ts, 0); 1600 nanosleep (&ts, 0);
638#elif defined(_WIN32) 1601#elif defined _WIN32
639 Sleep ((unsigned long)(delay * 1e3)); 1602 Sleep ((unsigned long)(delay * 1e3));
640#else 1603#else
641 struct timeval tv; 1604 struct timeval tv;
642 1605
643 tv.tv_sec = (time_t)delay;
644 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
645
646 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1606 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
647 /* somehting not guaranteed by newer posix versions, but guaranteed */ 1607 /* something not guaranteed by newer posix versions, but guaranteed */
648 /* by older ones */ 1608 /* by older ones */
1609 EV_TV_SET (tv, delay);
649 select (0, 0, 0, 0, &tv); 1610 select (0, 0, 0, 0, &tv);
650#endif 1611#endif
651 } 1612 }
652} 1613}
653 1614
654/*****************************************************************************/ 1615/*****************************************************************************/
655 1616
656#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1617#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
657 1618
658/* find a suitable new size for the given array, */ 1619/* find a suitable new size for the given array, */
659/* hopefully by rounding to a ncie-to-malloc size */ 1620/* hopefully by rounding to a nice-to-malloc size */
660inline_size int 1621inline_size int
661array_nextsize (int elem, int cur, int cnt) 1622array_nextsize (int elem, int cur, int cnt)
662{ 1623{
663 int ncur = cur + 1; 1624 int ncur = cur + 1;
664 1625
665 do 1626 do
666 ncur <<= 1; 1627 ncur <<= 1;
667 while (cnt > ncur); 1628 while (cnt > ncur);
668 1629
669 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1630 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
670 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1631 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
671 { 1632 {
672 ncur *= elem; 1633 ncur *= elem;
673 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1634 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
674 ncur = ncur - sizeof (void *) * 4; 1635 ncur = ncur - sizeof (void *) * 4;
… …
676 } 1637 }
677 1638
678 return ncur; 1639 return ncur;
679} 1640}
680 1641
681static noinline void * 1642static void * noinline ecb_cold
682array_realloc (int elem, void *base, int *cur, int cnt) 1643array_realloc (int elem, void *base, int *cur, int cnt)
683{ 1644{
684 *cur = array_nextsize (elem, *cur, cnt); 1645 *cur = array_nextsize (elem, *cur, cnt);
685 return ev_realloc (base, elem * *cur); 1646 return ev_realloc (base, elem * *cur);
686} 1647}
… …
689 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1650 memset ((void *)(base), 0, sizeof (*(base)) * (count))
690 1651
691#define array_needsize(type,base,cur,cnt,init) \ 1652#define array_needsize(type,base,cur,cnt,init) \
692 if (expect_false ((cnt) > (cur))) \ 1653 if (expect_false ((cnt) > (cur))) \
693 { \ 1654 { \
694 int ocur_ = (cur); \ 1655 int ecb_unused ocur_ = (cur); \
695 (base) = (type *)array_realloc \ 1656 (base) = (type *)array_realloc \
696 (sizeof (type), (base), &(cur), (cnt)); \ 1657 (sizeof (type), (base), &(cur), (cnt)); \
697 init ((base) + (ocur_), (cur) - ocur_); \ 1658 init ((base) + (ocur_), (cur) - ocur_); \
698 } 1659 }
699 1660
… …
717pendingcb (EV_P_ ev_prepare *w, int revents) 1678pendingcb (EV_P_ ev_prepare *w, int revents)
718{ 1679{
719} 1680}
720 1681
721void noinline 1682void noinline
722ev_feed_event (EV_P_ void *w, int revents) 1683ev_feed_event (EV_P_ void *w, int revents) EV_THROW
723{ 1684{
724 W w_ = (W)w; 1685 W w_ = (W)w;
725 int pri = ABSPRI (w_); 1686 int pri = ABSPRI (w_);
726 1687
727 if (expect_false (w_->pending)) 1688 if (expect_false (w_->pending))
… …
731 w_->pending = ++pendingcnt [pri]; 1692 w_->pending = ++pendingcnt [pri];
732 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1693 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
733 pendings [pri][w_->pending - 1].w = w_; 1694 pendings [pri][w_->pending - 1].w = w_;
734 pendings [pri][w_->pending - 1].events = revents; 1695 pendings [pri][w_->pending - 1].events = revents;
735 } 1696 }
1697
1698 pendingpri = NUMPRI - 1;
736} 1699}
737 1700
738inline_speed void 1701inline_speed void
739feed_reverse (EV_P_ W w) 1702feed_reverse (EV_P_ W w)
740{ 1703{
… …
760} 1723}
761 1724
762/*****************************************************************************/ 1725/*****************************************************************************/
763 1726
764inline_speed void 1727inline_speed void
765fd_event (EV_P_ int fd, int revents) 1728fd_event_nocheck (EV_P_ int fd, int revents)
766{ 1729{
767 ANFD *anfd = anfds + fd; 1730 ANFD *anfd = anfds + fd;
768 ev_io *w; 1731 ev_io *w;
769 1732
770 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1733 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
774 if (ev) 1737 if (ev)
775 ev_feed_event (EV_A_ (W)w, ev); 1738 ev_feed_event (EV_A_ (W)w, ev);
776 } 1739 }
777} 1740}
778 1741
1742/* do not submit kernel events for fds that have reify set */
1743/* because that means they changed while we were polling for new events */
1744inline_speed void
1745fd_event (EV_P_ int fd, int revents)
1746{
1747 ANFD *anfd = anfds + fd;
1748
1749 if (expect_true (!anfd->reify))
1750 fd_event_nocheck (EV_A_ fd, revents);
1751}
1752
779void 1753void
780ev_feed_fd_event (EV_P_ int fd, int revents) 1754ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
781{ 1755{
782 if (fd >= 0 && fd < anfdmax) 1756 if (fd >= 0 && fd < anfdmax)
783 fd_event (EV_A_ fd, revents); 1757 fd_event_nocheck (EV_A_ fd, revents);
784} 1758}
785 1759
786/* make sure the external fd watch events are in-sync */ 1760/* make sure the external fd watch events are in-sync */
787/* with the kernel/libev internal state */ 1761/* with the kernel/libev internal state */
788inline_size void 1762inline_size void
789fd_reify (EV_P) 1763fd_reify (EV_P)
790{ 1764{
791 int i; 1765 int i;
792 1766
1767#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1768 for (i = 0; i < fdchangecnt; ++i)
1769 {
1770 int fd = fdchanges [i];
1771 ANFD *anfd = anfds + fd;
1772
1773 if (anfd->reify & EV__IOFDSET && anfd->head)
1774 {
1775 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1776
1777 if (handle != anfd->handle)
1778 {
1779 unsigned long arg;
1780
1781 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1782
1783 /* handle changed, but fd didn't - we need to do it in two steps */
1784 backend_modify (EV_A_ fd, anfd->events, 0);
1785 anfd->events = 0;
1786 anfd->handle = handle;
1787 }
1788 }
1789 }
1790#endif
1791
793 for (i = 0; i < fdchangecnt; ++i) 1792 for (i = 0; i < fdchangecnt; ++i)
794 { 1793 {
795 int fd = fdchanges [i]; 1794 int fd = fdchanges [i];
796 ANFD *anfd = anfds + fd; 1795 ANFD *anfd = anfds + fd;
797 ev_io *w; 1796 ev_io *w;
798 1797
799 unsigned char events = 0; 1798 unsigned char o_events = anfd->events;
1799 unsigned char o_reify = anfd->reify;
800 1800
801 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1801 anfd->reify = 0;
802 events |= (unsigned char)w->events;
803 1802
804#if EV_SELECT_IS_WINSOCKET 1803 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
805 if (events)
806 { 1804 {
807 unsigned long arg; 1805 anfd->events = 0;
808 #ifdef EV_FD_TO_WIN32_HANDLE 1806
809 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1807 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
810 #else 1808 anfd->events |= (unsigned char)w->events;
811 anfd->handle = _get_osfhandle (fd); 1809
812 #endif 1810 if (o_events != anfd->events)
813 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1811 o_reify = EV__IOFDSET; /* actually |= */
814 } 1812 }
815#endif
816 1813
817 { 1814 if (o_reify & EV__IOFDSET)
818 unsigned char o_events = anfd->events;
819 unsigned char o_reify = anfd->reify;
820
821 anfd->reify = 0;
822 anfd->events = events;
823
824 if (o_events != events || o_reify & EV__IOFDSET)
825 backend_modify (EV_A_ fd, o_events, events); 1815 backend_modify (EV_A_ fd, o_events, anfd->events);
826 }
827 } 1816 }
828 1817
829 fdchangecnt = 0; 1818 fdchangecnt = 0;
830} 1819}
831 1820
… …
843 fdchanges [fdchangecnt - 1] = fd; 1832 fdchanges [fdchangecnt - 1] = fd;
844 } 1833 }
845} 1834}
846 1835
847/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1836/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
848inline_speed void 1837inline_speed void ecb_cold
849fd_kill (EV_P_ int fd) 1838fd_kill (EV_P_ int fd)
850{ 1839{
851 ev_io *w; 1840 ev_io *w;
852 1841
853 while ((w = (ev_io *)anfds [fd].head)) 1842 while ((w = (ev_io *)anfds [fd].head))
… …
855 ev_io_stop (EV_A_ w); 1844 ev_io_stop (EV_A_ w);
856 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1845 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
857 } 1846 }
858} 1847}
859 1848
860/* check whether the given fd is atcually valid, for error recovery */ 1849/* check whether the given fd is actually valid, for error recovery */
861inline_size int 1850inline_size int ecb_cold
862fd_valid (int fd) 1851fd_valid (int fd)
863{ 1852{
864#ifdef _WIN32 1853#ifdef _WIN32
865 return _get_osfhandle (fd) != -1; 1854 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
866#else 1855#else
867 return fcntl (fd, F_GETFD) != -1; 1856 return fcntl (fd, F_GETFD) != -1;
868#endif 1857#endif
869} 1858}
870 1859
871/* called on EBADF to verify fds */ 1860/* called on EBADF to verify fds */
872static void noinline 1861static void noinline ecb_cold
873fd_ebadf (EV_P) 1862fd_ebadf (EV_P)
874{ 1863{
875 int fd; 1864 int fd;
876 1865
877 for (fd = 0; fd < anfdmax; ++fd) 1866 for (fd = 0; fd < anfdmax; ++fd)
… …
879 if (!fd_valid (fd) && errno == EBADF) 1868 if (!fd_valid (fd) && errno == EBADF)
880 fd_kill (EV_A_ fd); 1869 fd_kill (EV_A_ fd);
881} 1870}
882 1871
883/* called on ENOMEM in select/poll to kill some fds and retry */ 1872/* called on ENOMEM in select/poll to kill some fds and retry */
884static void noinline 1873static void noinline ecb_cold
885fd_enomem (EV_P) 1874fd_enomem (EV_P)
886{ 1875{
887 int fd; 1876 int fd;
888 1877
889 for (fd = anfdmax; fd--; ) 1878 for (fd = anfdmax; fd--; )
890 if (anfds [fd].events) 1879 if (anfds [fd].events)
891 { 1880 {
892 fd_kill (EV_A_ fd); 1881 fd_kill (EV_A_ fd);
893 return; 1882 break;
894 } 1883 }
895} 1884}
896 1885
897/* usually called after fork if backend needs to re-arm all fds from scratch */ 1886/* usually called after fork if backend needs to re-arm all fds from scratch */
898static void noinline 1887static void noinline
… …
903 for (fd = 0; fd < anfdmax; ++fd) 1892 for (fd = 0; fd < anfdmax; ++fd)
904 if (anfds [fd].events) 1893 if (anfds [fd].events)
905 { 1894 {
906 anfds [fd].events = 0; 1895 anfds [fd].events = 0;
907 anfds [fd].emask = 0; 1896 anfds [fd].emask = 0;
908 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1897 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
909 } 1898 }
910} 1899}
911 1900
1901/* used to prepare libev internal fd's */
1902/* this is not fork-safe */
1903inline_speed void
1904fd_intern (int fd)
1905{
1906#ifdef _WIN32
1907 unsigned long arg = 1;
1908 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1909#else
1910 fcntl (fd, F_SETFD, FD_CLOEXEC);
1911 fcntl (fd, F_SETFL, O_NONBLOCK);
1912#endif
1913}
1914
912/*****************************************************************************/ 1915/*****************************************************************************/
913 1916
914/* 1917/*
915 * the heap functions want a real array index. array index 0 uis guaranteed to not 1918 * the heap functions want a real array index. array index 0 is guaranteed to not
916 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1919 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
917 * the branching factor of the d-tree. 1920 * the branching factor of the d-tree.
918 */ 1921 */
919 1922
920/* 1923/*
… …
988 1991
989 for (;;) 1992 for (;;)
990 { 1993 {
991 int c = k << 1; 1994 int c = k << 1;
992 1995
993 if (c > N + HEAP0 - 1) 1996 if (c >= N + HEAP0)
994 break; 1997 break;
995 1998
996 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1999 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
997 ? 1 : 0; 2000 ? 1 : 0;
998 2001
… …
1034 2037
1035/* move an element suitably so it is in a correct place */ 2038/* move an element suitably so it is in a correct place */
1036inline_size void 2039inline_size void
1037adjustheap (ANHE *heap, int N, int k) 2040adjustheap (ANHE *heap, int N, int k)
1038{ 2041{
1039 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2042 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1040 upheap (heap, k); 2043 upheap (heap, k);
1041 else 2044 else
1042 downheap (heap, N, k); 2045 downheap (heap, N, k);
1043} 2046}
1044 2047
… …
1057/*****************************************************************************/ 2060/*****************************************************************************/
1058 2061
1059/* associate signal watchers to a signal signal */ 2062/* associate signal watchers to a signal signal */
1060typedef struct 2063typedef struct
1061{ 2064{
2065 EV_ATOMIC_T pending;
2066#if EV_MULTIPLICITY
2067 EV_P;
2068#endif
1062 WL head; 2069 WL head;
1063 EV_ATOMIC_T gotsig;
1064} ANSIG; 2070} ANSIG;
1065 2071
1066static ANSIG *signals; 2072static ANSIG signals [EV_NSIG - 1];
1067static int signalmax;
1068
1069static EV_ATOMIC_T gotsig;
1070 2073
1071/*****************************************************************************/ 2074/*****************************************************************************/
1072 2075
1073/* used to prepare libev internal fd's */ 2076#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1074/* this is not fork-safe */ 2077
2078static void noinline ecb_cold
2079evpipe_init (EV_P)
2080{
2081 if (!ev_is_active (&pipe_w))
2082 {
2083 int fds [2];
2084
2085# if EV_USE_EVENTFD
2086 fds [0] = -1;
2087 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2088 if (fds [1] < 0 && errno == EINVAL)
2089 fds [1] = eventfd (0, 0);
2090
2091 if (fds [1] < 0)
2092# endif
2093 {
2094 while (pipe (fds))
2095 ev_syserr ("(libev) error creating signal/async pipe");
2096
2097 fd_intern (fds [0]);
2098 }
2099
2100 fd_intern (fds [1]);
2101
2102 evpipe [0] = fds [0];
2103
2104 if (evpipe [1] < 0)
2105 evpipe [1] = fds [1]; /* first call, set write fd */
2106 else
2107 {
2108 /* on subsequent calls, do not change evpipe [1] */
2109 /* so that evpipe_write can always rely on its value. */
2110 /* this branch does not do anything sensible on windows, */
2111 /* so must not be executed on windows */
2112
2113 dup2 (fds [1], evpipe [1]);
2114 close (fds [1]);
2115 }
2116
2117 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2118 ev_io_start (EV_A_ &pipe_w);
2119 ev_unref (EV_A); /* watcher should not keep loop alive */
2120 }
2121}
2122
1075inline_speed void 2123inline_speed void
1076fd_intern (int fd) 2124evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1077{ 2125{
1078#ifdef _WIN32 2126 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1079 unsigned long arg = 1;
1080 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1081#else
1082 fcntl (fd, F_SETFD, FD_CLOEXEC);
1083 fcntl (fd, F_SETFL, O_NONBLOCK);
1084#endif
1085}
1086 2127
1087static void noinline 2128 if (expect_true (*flag))
1088evpipe_init (EV_P) 2129 return;
1089{ 2130
1090 if (!ev_is_active (&pipe_w)) 2131 *flag = 1;
2132 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2133
2134 pipe_write_skipped = 1;
2135
2136 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2137
2138 if (pipe_write_wanted)
1091 { 2139 {
2140 int old_errno;
2141
2142 pipe_write_skipped = 0;
2143 ECB_MEMORY_FENCE_RELEASE;
2144
2145 old_errno = errno; /* save errno because write will clobber it */
2146
1092#if EV_USE_EVENTFD 2147#if EV_USE_EVENTFD
1093 if ((evfd = eventfd (0, 0)) >= 0) 2148 if (evpipe [0] < 0)
1094 { 2149 {
1095 evpipe [0] = -1; 2150 uint64_t counter = 1;
1096 fd_intern (evfd); 2151 write (evpipe [1], &counter, sizeof (uint64_t));
1097 ev_io_set (&pipe_w, evfd, EV_READ);
1098 } 2152 }
1099 else 2153 else
1100#endif 2154#endif
1101 { 2155 {
1102 while (pipe (evpipe)) 2156#ifdef _WIN32
1103 ev_syserr ("(libev) error creating signal/async pipe"); 2157 WSABUF buf;
1104 2158 DWORD sent;
1105 fd_intern (evpipe [0]); 2159 buf.buf = &buf;
1106 fd_intern (evpipe [1]); 2160 buf.len = 1;
1107 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2161 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2162#else
2163 write (evpipe [1], &(evpipe [1]), 1);
2164#endif
1108 } 2165 }
1109
1110 ev_io_start (EV_A_ &pipe_w);
1111 ev_unref (EV_A); /* watcher should not keep loop alive */
1112 }
1113}
1114
1115inline_size void
1116evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1117{
1118 if (!*flag)
1119 {
1120 int old_errno = errno; /* save errno because write might clobber it */
1121
1122 *flag = 1;
1123
1124#if EV_USE_EVENTFD
1125 if (evfd >= 0)
1126 {
1127 uint64_t counter = 1;
1128 write (evfd, &counter, sizeof (uint64_t));
1129 }
1130 else
1131#endif
1132 write (evpipe [1], &old_errno, 1);
1133 2166
1134 errno = old_errno; 2167 errno = old_errno;
1135 } 2168 }
1136} 2169}
1137 2170
1138/* called whenever the libev signal pipe */ 2171/* called whenever the libev signal pipe */
1139/* got some events (signal, async) */ 2172/* got some events (signal, async) */
1140static void 2173static void
1141pipecb (EV_P_ ev_io *iow, int revents) 2174pipecb (EV_P_ ev_io *iow, int revents)
1142{ 2175{
2176 int i;
2177
2178 if (revents & EV_READ)
2179 {
1143#if EV_USE_EVENTFD 2180#if EV_USE_EVENTFD
1144 if (evfd >= 0) 2181 if (evpipe [0] < 0)
1145 { 2182 {
1146 uint64_t counter; 2183 uint64_t counter;
1147 read (evfd, &counter, sizeof (uint64_t)); 2184 read (evpipe [1], &counter, sizeof (uint64_t));
1148 } 2185 }
1149 else 2186 else
1150#endif 2187#endif
1151 { 2188 {
1152 char dummy; 2189 char dummy[4];
2190#ifdef _WIN32
2191 WSABUF buf;
2192 DWORD recvd;
2193 DWORD flags = 0;
2194 buf.buf = dummy;
2195 buf.len = sizeof (dummy);
2196 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2197#else
1153 read (evpipe [0], &dummy, 1); 2198 read (evpipe [0], &dummy, sizeof (dummy));
2199#endif
2200 }
2201 }
2202
2203 pipe_write_skipped = 0;
2204
2205 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2206
2207#if EV_SIGNAL_ENABLE
2208 if (sig_pending)
1154 } 2209 {
2210 sig_pending = 0;
1155 2211
1156 if (gotsig && ev_is_default_loop (EV_A)) 2212 ECB_MEMORY_FENCE;
1157 {
1158 int signum;
1159 gotsig = 0;
1160 2213
1161 for (signum = signalmax; signum--; ) 2214 for (i = EV_NSIG - 1; i--; )
1162 if (signals [signum].gotsig) 2215 if (expect_false (signals [i].pending))
1163 ev_feed_signal_event (EV_A_ signum + 1); 2216 ev_feed_signal_event (EV_A_ i + 1);
1164 } 2217 }
2218#endif
1165 2219
1166#if EV_ASYNC_ENABLE 2220#if EV_ASYNC_ENABLE
1167 if (gotasync) 2221 if (async_pending)
1168 { 2222 {
1169 int i; 2223 async_pending = 0;
1170 gotasync = 0; 2224
2225 ECB_MEMORY_FENCE;
1171 2226
1172 for (i = asynccnt; i--; ) 2227 for (i = asynccnt; i--; )
1173 if (asyncs [i]->sent) 2228 if (asyncs [i]->sent)
1174 { 2229 {
1175 asyncs [i]->sent = 0; 2230 asyncs [i]->sent = 0;
2231 ECB_MEMORY_FENCE_RELEASE;
1176 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2232 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1177 } 2233 }
1178 } 2234 }
1179#endif 2235#endif
1180} 2236}
1181 2237
1182/*****************************************************************************/ 2238/*****************************************************************************/
1183 2239
2240void
2241ev_feed_signal (int signum) EV_THROW
2242{
2243#if EV_MULTIPLICITY
2244 ECB_MEMORY_FENCE_ACQUIRE;
2245 EV_P = signals [signum - 1].loop;
2246
2247 if (!EV_A)
2248 return;
2249#endif
2250
2251 signals [signum - 1].pending = 1;
2252 evpipe_write (EV_A_ &sig_pending);
2253}
2254
1184static void 2255static void
1185ev_sighandler (int signum) 2256ev_sighandler (int signum)
1186{ 2257{
2258#ifdef _WIN32
2259 signal (signum, ev_sighandler);
2260#endif
2261
2262 ev_feed_signal (signum);
2263}
2264
2265void noinline
2266ev_feed_signal_event (EV_P_ int signum) EV_THROW
2267{
2268 WL w;
2269
2270 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2271 return;
2272
2273 --signum;
2274
1187#if EV_MULTIPLICITY 2275#if EV_MULTIPLICITY
1188 struct ev_loop *loop = &default_loop_struct; 2276 /* it is permissible to try to feed a signal to the wrong loop */
1189#endif 2277 /* or, likely more useful, feeding a signal nobody is waiting for */
1190 2278
1191#if _WIN32 2279 if (expect_false (signals [signum].loop != EV_A))
1192 signal (signum, ev_sighandler);
1193#endif
1194
1195 signals [signum - 1].gotsig = 1;
1196 evpipe_write (EV_A_ &gotsig);
1197}
1198
1199void noinline
1200ev_feed_signal_event (EV_P_ int signum)
1201{
1202 WL w;
1203
1204#if EV_MULTIPLICITY
1205 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1206#endif
1207
1208 --signum;
1209
1210 if (signum < 0 || signum >= signalmax)
1211 return; 2280 return;
2281#endif
1212 2282
1213 signals [signum].gotsig = 0; 2283 signals [signum].pending = 0;
2284 ECB_MEMORY_FENCE_RELEASE;
1214 2285
1215 for (w = signals [signum].head; w; w = w->next) 2286 for (w = signals [signum].head; w; w = w->next)
1216 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2287 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1217} 2288}
1218 2289
2290#if EV_USE_SIGNALFD
2291static void
2292sigfdcb (EV_P_ ev_io *iow, int revents)
2293{
2294 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2295
2296 for (;;)
2297 {
2298 ssize_t res = read (sigfd, si, sizeof (si));
2299
2300 /* not ISO-C, as res might be -1, but works with SuS */
2301 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2302 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2303
2304 if (res < (ssize_t)sizeof (si))
2305 break;
2306 }
2307}
2308#endif
2309
2310#endif
2311
1219/*****************************************************************************/ 2312/*****************************************************************************/
1220 2313
2314#if EV_CHILD_ENABLE
1221static WL childs [EV_PID_HASHSIZE]; 2315static WL childs [EV_PID_HASHSIZE];
1222
1223#ifndef _WIN32
1224 2316
1225static ev_signal childev; 2317static ev_signal childev;
1226 2318
1227#ifndef WIFCONTINUED 2319#ifndef WIFCONTINUED
1228# define WIFCONTINUED(status) 0 2320# define WIFCONTINUED(status) 0
… …
1233child_reap (EV_P_ int chain, int pid, int status) 2325child_reap (EV_P_ int chain, int pid, int status)
1234{ 2326{
1235 ev_child *w; 2327 ev_child *w;
1236 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2328 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1237 2329
1238 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2330 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1239 { 2331 {
1240 if ((w->pid == pid || !w->pid) 2332 if ((w->pid == pid || !w->pid)
1241 && (!traced || (w->flags & 1))) 2333 && (!traced || (w->flags & 1)))
1242 { 2334 {
1243 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2335 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1268 /* make sure we are called again until all children have been reaped */ 2360 /* make sure we are called again until all children have been reaped */
1269 /* we need to do it this way so that the callback gets called before we continue */ 2361 /* we need to do it this way so that the callback gets called before we continue */
1270 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2362 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1271 2363
1272 child_reap (EV_A_ pid, pid, status); 2364 child_reap (EV_A_ pid, pid, status);
1273 if (EV_PID_HASHSIZE > 1) 2365 if ((EV_PID_HASHSIZE) > 1)
1274 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2366 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1275} 2367}
1276 2368
1277#endif 2369#endif
1278 2370
1279/*****************************************************************************/ 2371/*****************************************************************************/
1280 2372
2373#if EV_USE_IOCP
2374# include "ev_iocp.c"
2375#endif
1281#if EV_USE_PORT 2376#if EV_USE_PORT
1282# include "ev_port.c" 2377# include "ev_port.c"
1283#endif 2378#endif
1284#if EV_USE_KQUEUE 2379#if EV_USE_KQUEUE
1285# include "ev_kqueue.c" 2380# include "ev_kqueue.c"
… …
1292#endif 2387#endif
1293#if EV_USE_SELECT 2388#if EV_USE_SELECT
1294# include "ev_select.c" 2389# include "ev_select.c"
1295#endif 2390#endif
1296 2391
1297int 2392int ecb_cold
1298ev_version_major (void) 2393ev_version_major (void) EV_THROW
1299{ 2394{
1300 return EV_VERSION_MAJOR; 2395 return EV_VERSION_MAJOR;
1301} 2396}
1302 2397
1303int 2398int ecb_cold
1304ev_version_minor (void) 2399ev_version_minor (void) EV_THROW
1305{ 2400{
1306 return EV_VERSION_MINOR; 2401 return EV_VERSION_MINOR;
1307} 2402}
1308 2403
1309/* return true if we are running with elevated privileges and should ignore env variables */ 2404/* return true if we are running with elevated privileges and should ignore env variables */
1310int inline_size 2405int inline_size ecb_cold
1311enable_secure (void) 2406enable_secure (void)
1312{ 2407{
1313#ifdef _WIN32 2408#ifdef _WIN32
1314 return 0; 2409 return 0;
1315#else 2410#else
1316 return getuid () != geteuid () 2411 return getuid () != geteuid ()
1317 || getgid () != getegid (); 2412 || getgid () != getegid ();
1318#endif 2413#endif
1319} 2414}
1320 2415
1321unsigned int 2416unsigned int ecb_cold
1322ev_supported_backends (void) 2417ev_supported_backends (void) EV_THROW
1323{ 2418{
1324 unsigned int flags = 0; 2419 unsigned int flags = 0;
1325 2420
1326 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2421 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1327 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2422 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1330 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2425 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1331 2426
1332 return flags; 2427 return flags;
1333} 2428}
1334 2429
1335unsigned int 2430unsigned int ecb_cold
1336ev_recommended_backends (void) 2431ev_recommended_backends (void) EV_THROW
1337{ 2432{
1338 unsigned int flags = ev_supported_backends (); 2433 unsigned int flags = ev_supported_backends ();
1339 2434
1340#ifndef __NetBSD__ 2435#ifndef __NetBSD__
1341 /* kqueue is borked on everything but netbsd apparently */ 2436 /* kqueue is borked on everything but netbsd apparently */
… …
1345#ifdef __APPLE__ 2440#ifdef __APPLE__
1346 /* only select works correctly on that "unix-certified" platform */ 2441 /* only select works correctly on that "unix-certified" platform */
1347 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2442 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1348 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2443 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1349#endif 2444#endif
2445#ifdef __FreeBSD__
2446 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2447#endif
1350 2448
1351 return flags; 2449 return flags;
1352} 2450}
1353 2451
2452unsigned int ecb_cold
2453ev_embeddable_backends (void) EV_THROW
2454{
2455 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2456
2457 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2458 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2459 flags &= ~EVBACKEND_EPOLL;
2460
2461 return flags;
2462}
2463
1354unsigned int 2464unsigned int
1355ev_embeddable_backends (void) 2465ev_backend (EV_P) EV_THROW
1356{ 2466{
1357 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2467 return backend;
1358
1359 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1360 /* please fix it and tell me how to detect the fix */
1361 flags &= ~EVBACKEND_EPOLL;
1362
1363 return flags;
1364} 2468}
1365 2469
2470#if EV_FEATURE_API
1366unsigned int 2471unsigned int
1367ev_backend (EV_P) 2472ev_iteration (EV_P) EV_THROW
1368{ 2473{
1369 return backend; 2474 return loop_count;
1370} 2475}
1371 2476
1372#if EV_MINIMAL < 2
1373unsigned int 2477unsigned int
1374ev_loop_count (EV_P) 2478ev_depth (EV_P) EV_THROW
1375{
1376 return loop_count;
1377}
1378
1379unsigned int
1380ev_loop_depth (EV_P)
1381{ 2479{
1382 return loop_depth; 2480 return loop_depth;
1383} 2481}
1384 2482
1385void 2483void
1386ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2484ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1387{ 2485{
1388 io_blocktime = interval; 2486 io_blocktime = interval;
1389} 2487}
1390 2488
1391void 2489void
1392ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2490ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1393{ 2491{
1394 timeout_blocktime = interval; 2492 timeout_blocktime = interval;
1395} 2493}
1396 2494
1397void 2495void
1398ev_set_userdata (EV_P_ void *data) 2496ev_set_userdata (EV_P_ void *data) EV_THROW
1399{ 2497{
1400 userdata = data; 2498 userdata = data;
1401} 2499}
1402 2500
1403void * 2501void *
1404ev_userdata (EV_P) 2502ev_userdata (EV_P) EV_THROW
1405{ 2503{
1406 return userdata; 2504 return userdata;
1407} 2505}
1408 2506
2507void
1409void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2508ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1410{ 2509{
1411 invoke_cb = invoke_pending_cb; 2510 invoke_cb = invoke_pending_cb;
1412} 2511}
1413 2512
1414void ev_set_blocking_cb (EV_P_ void (*suspend_cb_)(EV_P), void (*resume_cb_)(EV_P)) 2513void
2514ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1415{ 2515{
1416 suspend_cb = suspend_cb_; 2516 release_cb = release;
1417 resume_cb = resume_cb_; 2517 acquire_cb = acquire;
1418} 2518}
1419#endif 2519#endif
1420 2520
1421/* initialise a loop structure, must be zero-initialised */ 2521/* initialise a loop structure, must be zero-initialised */
1422static void noinline 2522static void noinline ecb_cold
1423loop_init (EV_P_ unsigned int flags) 2523loop_init (EV_P_ unsigned int flags) EV_THROW
1424{ 2524{
1425 if (!backend) 2525 if (!backend)
1426 { 2526 {
2527 origflags = flags;
2528
1427#if EV_USE_REALTIME 2529#if EV_USE_REALTIME
1428 if (!have_realtime) 2530 if (!have_realtime)
1429 { 2531 {
1430 struct timespec ts; 2532 struct timespec ts;
1431 2533
… …
1442 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2544 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1443 have_monotonic = 1; 2545 have_monotonic = 1;
1444 } 2546 }
1445#endif 2547#endif
1446 2548
1447 ev_rt_now = ev_time ();
1448 mn_now = get_clock ();
1449 now_floor = mn_now;
1450 rtmn_diff = ev_rt_now - mn_now;
1451#if EV_MINIMAL < 2
1452 invoke_cb = ev_invoke_pending;
1453#endif
1454
1455 io_blocktime = 0.;
1456 timeout_blocktime = 0.;
1457 backend = 0;
1458 backend_fd = -1;
1459 gotasync = 0;
1460#if EV_USE_INOTIFY
1461 fs_fd = -2;
1462#endif
1463
1464 /* pid check not overridable via env */ 2549 /* pid check not overridable via env */
1465#ifndef _WIN32 2550#ifndef _WIN32
1466 if (flags & EVFLAG_FORKCHECK) 2551 if (flags & EVFLAG_FORKCHECK)
1467 curpid = getpid (); 2552 curpid = getpid ();
1468#endif 2553#endif
… …
1470 if (!(flags & EVFLAG_NOENV) 2555 if (!(flags & EVFLAG_NOENV)
1471 && !enable_secure () 2556 && !enable_secure ()
1472 && getenv ("LIBEV_FLAGS")) 2557 && getenv ("LIBEV_FLAGS"))
1473 flags = atoi (getenv ("LIBEV_FLAGS")); 2558 flags = atoi (getenv ("LIBEV_FLAGS"));
1474 2559
1475 if (!(flags & 0x0000ffffU)) 2560 ev_rt_now = ev_time ();
2561 mn_now = get_clock ();
2562 now_floor = mn_now;
2563 rtmn_diff = ev_rt_now - mn_now;
2564#if EV_FEATURE_API
2565 invoke_cb = ev_invoke_pending;
2566#endif
2567
2568 io_blocktime = 0.;
2569 timeout_blocktime = 0.;
2570 backend = 0;
2571 backend_fd = -1;
2572 sig_pending = 0;
2573#if EV_ASYNC_ENABLE
2574 async_pending = 0;
2575#endif
2576 pipe_write_skipped = 0;
2577 pipe_write_wanted = 0;
2578 evpipe [0] = -1;
2579 evpipe [1] = -1;
2580#if EV_USE_INOTIFY
2581 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2582#endif
2583#if EV_USE_SIGNALFD
2584 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2585#endif
2586
2587 if (!(flags & EVBACKEND_MASK))
1476 flags |= ev_recommended_backends (); 2588 flags |= ev_recommended_backends ();
1477 2589
2590#if EV_USE_IOCP
2591 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2592#endif
1478#if EV_USE_PORT 2593#if EV_USE_PORT
1479 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2594 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1480#endif 2595#endif
1481#if EV_USE_KQUEUE 2596#if EV_USE_KQUEUE
1482 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2597 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1491 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2606 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1492#endif 2607#endif
1493 2608
1494 ev_prepare_init (&pending_w, pendingcb); 2609 ev_prepare_init (&pending_w, pendingcb);
1495 2610
2611#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1496 ev_init (&pipe_w, pipecb); 2612 ev_init (&pipe_w, pipecb);
1497 ev_set_priority (&pipe_w, EV_MAXPRI); 2613 ev_set_priority (&pipe_w, EV_MAXPRI);
2614#endif
1498 } 2615 }
1499} 2616}
1500 2617
1501/* free up a loop structure */ 2618/* free up a loop structure */
1502static void noinline 2619void ecb_cold
1503loop_destroy (EV_P) 2620ev_loop_destroy (EV_P)
1504{ 2621{
1505 int i; 2622 int i;
1506 2623
2624#if EV_MULTIPLICITY
2625 /* mimic free (0) */
2626 if (!EV_A)
2627 return;
2628#endif
2629
2630#if EV_CLEANUP_ENABLE
2631 /* queue cleanup watchers (and execute them) */
2632 if (expect_false (cleanupcnt))
2633 {
2634 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2635 EV_INVOKE_PENDING;
2636 }
2637#endif
2638
2639#if EV_CHILD_ENABLE
2640 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2641 {
2642 ev_ref (EV_A); /* child watcher */
2643 ev_signal_stop (EV_A_ &childev);
2644 }
2645#endif
2646
1507 if (ev_is_active (&pipe_w)) 2647 if (ev_is_active (&pipe_w))
1508 { 2648 {
1509 ev_ref (EV_A); /* signal watcher */ 2649 /*ev_ref (EV_A);*/
1510 ev_io_stop (EV_A_ &pipe_w); 2650 /*ev_io_stop (EV_A_ &pipe_w);*/
1511 2651
2652 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2653 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2654 }
2655
1512#if EV_USE_EVENTFD 2656#if EV_USE_SIGNALFD
1513 if (evfd >= 0) 2657 if (ev_is_active (&sigfd_w))
1514 close (evfd); 2658 close (sigfd);
1515#endif 2659#endif
1516
1517 if (evpipe [0] >= 0)
1518 {
1519 close (evpipe [0]);
1520 close (evpipe [1]);
1521 }
1522 }
1523 2660
1524#if EV_USE_INOTIFY 2661#if EV_USE_INOTIFY
1525 if (fs_fd >= 0) 2662 if (fs_fd >= 0)
1526 close (fs_fd); 2663 close (fs_fd);
1527#endif 2664#endif
1528 2665
1529 if (backend_fd >= 0) 2666 if (backend_fd >= 0)
1530 close (backend_fd); 2667 close (backend_fd);
1531 2668
2669#if EV_USE_IOCP
2670 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2671#endif
1532#if EV_USE_PORT 2672#if EV_USE_PORT
1533 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2673 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1534#endif 2674#endif
1535#if EV_USE_KQUEUE 2675#if EV_USE_KQUEUE
1536 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2676 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1551#if EV_IDLE_ENABLE 2691#if EV_IDLE_ENABLE
1552 array_free (idle, [i]); 2692 array_free (idle, [i]);
1553#endif 2693#endif
1554 } 2694 }
1555 2695
1556 ev_free (anfds); anfdmax = 0; 2696 ev_free (anfds); anfds = 0; anfdmax = 0;
1557 2697
1558 /* have to use the microsoft-never-gets-it-right macro */ 2698 /* have to use the microsoft-never-gets-it-right macro */
1559 array_free (rfeed, EMPTY); 2699 array_free (rfeed, EMPTY);
1560 array_free (fdchange, EMPTY); 2700 array_free (fdchange, EMPTY);
1561 array_free (timer, EMPTY); 2701 array_free (timer, EMPTY);
… …
1563 array_free (periodic, EMPTY); 2703 array_free (periodic, EMPTY);
1564#endif 2704#endif
1565#if EV_FORK_ENABLE 2705#if EV_FORK_ENABLE
1566 array_free (fork, EMPTY); 2706 array_free (fork, EMPTY);
1567#endif 2707#endif
2708#if EV_CLEANUP_ENABLE
2709 array_free (cleanup, EMPTY);
2710#endif
1568 array_free (prepare, EMPTY); 2711 array_free (prepare, EMPTY);
1569 array_free (check, EMPTY); 2712 array_free (check, EMPTY);
1570#if EV_ASYNC_ENABLE 2713#if EV_ASYNC_ENABLE
1571 array_free (async, EMPTY); 2714 array_free (async, EMPTY);
1572#endif 2715#endif
1573 2716
1574 backend = 0; 2717 backend = 0;
2718
2719#if EV_MULTIPLICITY
2720 if (ev_is_default_loop (EV_A))
2721#endif
2722 ev_default_loop_ptr = 0;
2723#if EV_MULTIPLICITY
2724 else
2725 ev_free (EV_A);
2726#endif
1575} 2727}
1576 2728
1577#if EV_USE_INOTIFY 2729#if EV_USE_INOTIFY
1578inline_size void infy_fork (EV_P); 2730inline_size void infy_fork (EV_P);
1579#endif 2731#endif
… …
1592#endif 2744#endif
1593#if EV_USE_INOTIFY 2745#if EV_USE_INOTIFY
1594 infy_fork (EV_A); 2746 infy_fork (EV_A);
1595#endif 2747#endif
1596 2748
2749#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1597 if (ev_is_active (&pipe_w)) 2750 if (ev_is_active (&pipe_w))
1598 { 2751 {
1599 /* this "locks" the handlers against writing to the pipe */ 2752 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1600 /* while we modify the fd vars */
1601 gotsig = 1;
1602#if EV_ASYNC_ENABLE
1603 gotasync = 1;
1604#endif
1605 2753
1606 ev_ref (EV_A); 2754 ev_ref (EV_A);
1607 ev_io_stop (EV_A_ &pipe_w); 2755 ev_io_stop (EV_A_ &pipe_w);
1608 2756
1609#if EV_USE_EVENTFD
1610 if (evfd >= 0)
1611 close (evfd);
1612#endif
1613
1614 if (evpipe [0] >= 0) 2757 if (evpipe [0] >= 0)
1615 { 2758 EV_WIN32_CLOSE_FD (evpipe [0]);
1616 close (evpipe [0]);
1617 close (evpipe [1]);
1618 }
1619 2759
1620 evpipe_init (EV_A); 2760 evpipe_init (EV_A);
1621 /* now iterate over everything, in case we missed something */ 2761 /* iterate over everything, in case we missed something before */
1622 pipecb (EV_A_ &pipe_w, EV_READ); 2762 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1623 } 2763 }
2764#endif
1624 2765
1625 postfork = 0; 2766 postfork = 0;
1626} 2767}
1627 2768
1628#if EV_MULTIPLICITY 2769#if EV_MULTIPLICITY
1629 2770
1630struct ev_loop * 2771struct ev_loop * ecb_cold
1631ev_loop_new (unsigned int flags) 2772ev_loop_new (unsigned int flags) EV_THROW
1632{ 2773{
1633 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2774 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1634 2775
1635 memset (loop, 0, sizeof (struct ev_loop)); 2776 memset (EV_A, 0, sizeof (struct ev_loop));
1636
1637 loop_init (EV_A_ flags); 2777 loop_init (EV_A_ flags);
1638 2778
1639 if (ev_backend (EV_A)) 2779 if (ev_backend (EV_A))
1640 return loop; 2780 return EV_A;
1641 2781
2782 ev_free (EV_A);
1642 return 0; 2783 return 0;
1643} 2784}
1644 2785
1645void
1646ev_loop_destroy (EV_P)
1647{
1648 loop_destroy (EV_A);
1649 ev_free (loop);
1650}
1651
1652void
1653ev_loop_fork (EV_P)
1654{
1655 postfork = 1; /* must be in line with ev_default_fork */
1656}
1657#endif /* multiplicity */ 2786#endif /* multiplicity */
1658 2787
1659#if EV_VERIFY 2788#if EV_VERIFY
1660static void noinline 2789static void noinline ecb_cold
1661verify_watcher (EV_P_ W w) 2790verify_watcher (EV_P_ W w)
1662{ 2791{
1663 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2792 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1664 2793
1665 if (w->pending) 2794 if (w->pending)
1666 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2795 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1667} 2796}
1668 2797
1669static void noinline 2798static void noinline ecb_cold
1670verify_heap (EV_P_ ANHE *heap, int N) 2799verify_heap (EV_P_ ANHE *heap, int N)
1671{ 2800{
1672 int i; 2801 int i;
1673 2802
1674 for (i = HEAP0; i < N + HEAP0; ++i) 2803 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1679 2808
1680 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2809 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1681 } 2810 }
1682} 2811}
1683 2812
1684static void noinline 2813static void noinline ecb_cold
1685array_verify (EV_P_ W *ws, int cnt) 2814array_verify (EV_P_ W *ws, int cnt)
1686{ 2815{
1687 while (cnt--) 2816 while (cnt--)
1688 { 2817 {
1689 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2818 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1690 verify_watcher (EV_A_ ws [cnt]); 2819 verify_watcher (EV_A_ ws [cnt]);
1691 } 2820 }
1692} 2821}
1693#endif 2822#endif
1694 2823
1695#if EV_MINIMAL < 2 2824#if EV_FEATURE_API
1696void 2825void ecb_cold
1697ev_loop_verify (EV_P) 2826ev_verify (EV_P) EV_THROW
1698{ 2827{
1699#if EV_VERIFY 2828#if EV_VERIFY
1700 int i; 2829 int i;
1701 WL w; 2830 WL w, w2;
1702 2831
1703 assert (activecnt >= -1); 2832 assert (activecnt >= -1);
1704 2833
1705 assert (fdchangemax >= fdchangecnt); 2834 assert (fdchangemax >= fdchangecnt);
1706 for (i = 0; i < fdchangecnt; ++i) 2835 for (i = 0; i < fdchangecnt; ++i)
1707 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2836 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1708 2837
1709 assert (anfdmax >= 0); 2838 assert (anfdmax >= 0);
1710 for (i = 0; i < anfdmax; ++i) 2839 for (i = 0; i < anfdmax; ++i)
2840 {
2841 int j = 0;
2842
1711 for (w = anfds [i].head; w; w = w->next) 2843 for (w = w2 = anfds [i].head; w; w = w->next)
1712 { 2844 {
1713 verify_watcher (EV_A_ (W)w); 2845 verify_watcher (EV_A_ (W)w);
2846
2847 if (j++ & 1)
2848 {
2849 assert (("libev: io watcher list contains a loop", w != w2));
2850 w2 = w2->next;
2851 }
2852
1714 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2853 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1715 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2854 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1716 } 2855 }
2856 }
1717 2857
1718 assert (timermax >= timercnt); 2858 assert (timermax >= timercnt);
1719 verify_heap (EV_A_ timers, timercnt); 2859 verify_heap (EV_A_ timers, timercnt);
1720 2860
1721#if EV_PERIODIC_ENABLE 2861#if EV_PERIODIC_ENABLE
… …
1736#if EV_FORK_ENABLE 2876#if EV_FORK_ENABLE
1737 assert (forkmax >= forkcnt); 2877 assert (forkmax >= forkcnt);
1738 array_verify (EV_A_ (W *)forks, forkcnt); 2878 array_verify (EV_A_ (W *)forks, forkcnt);
1739#endif 2879#endif
1740 2880
2881#if EV_CLEANUP_ENABLE
2882 assert (cleanupmax >= cleanupcnt);
2883 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2884#endif
2885
1741#if EV_ASYNC_ENABLE 2886#if EV_ASYNC_ENABLE
1742 assert (asyncmax >= asynccnt); 2887 assert (asyncmax >= asynccnt);
1743 array_verify (EV_A_ (W *)asyncs, asynccnt); 2888 array_verify (EV_A_ (W *)asyncs, asynccnt);
1744#endif 2889#endif
1745 2890
2891#if EV_PREPARE_ENABLE
1746 assert (preparemax >= preparecnt); 2892 assert (preparemax >= preparecnt);
1747 array_verify (EV_A_ (W *)prepares, preparecnt); 2893 array_verify (EV_A_ (W *)prepares, preparecnt);
2894#endif
1748 2895
2896#if EV_CHECK_ENABLE
1749 assert (checkmax >= checkcnt); 2897 assert (checkmax >= checkcnt);
1750 array_verify (EV_A_ (W *)checks, checkcnt); 2898 array_verify (EV_A_ (W *)checks, checkcnt);
2899#endif
1751 2900
1752# if 0 2901# if 0
2902#if EV_CHILD_ENABLE
1753 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2903 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1754 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2904 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2905#endif
1755# endif 2906# endif
1756#endif 2907#endif
1757} 2908}
1758#endif 2909#endif
1759 2910
1760#if EV_MULTIPLICITY 2911#if EV_MULTIPLICITY
1761struct ev_loop * 2912struct ev_loop * ecb_cold
1762ev_default_loop_init (unsigned int flags)
1763#else 2913#else
1764int 2914int
2915#endif
1765ev_default_loop (unsigned int flags) 2916ev_default_loop (unsigned int flags) EV_THROW
1766#endif
1767{ 2917{
1768 if (!ev_default_loop_ptr) 2918 if (!ev_default_loop_ptr)
1769 { 2919 {
1770#if EV_MULTIPLICITY 2920#if EV_MULTIPLICITY
1771 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2921 EV_P = ev_default_loop_ptr = &default_loop_struct;
1772#else 2922#else
1773 ev_default_loop_ptr = 1; 2923 ev_default_loop_ptr = 1;
1774#endif 2924#endif
1775 2925
1776 loop_init (EV_A_ flags); 2926 loop_init (EV_A_ flags);
1777 2927
1778 if (ev_backend (EV_A)) 2928 if (ev_backend (EV_A))
1779 { 2929 {
1780#ifndef _WIN32 2930#if EV_CHILD_ENABLE
1781 ev_signal_init (&childev, childcb, SIGCHLD); 2931 ev_signal_init (&childev, childcb, SIGCHLD);
1782 ev_set_priority (&childev, EV_MAXPRI); 2932 ev_set_priority (&childev, EV_MAXPRI);
1783 ev_signal_start (EV_A_ &childev); 2933 ev_signal_start (EV_A_ &childev);
1784 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2934 ev_unref (EV_A); /* child watcher should not keep loop alive */
1785#endif 2935#endif
… …
1790 2940
1791 return ev_default_loop_ptr; 2941 return ev_default_loop_ptr;
1792} 2942}
1793 2943
1794void 2944void
1795ev_default_destroy (void) 2945ev_loop_fork (EV_P) EV_THROW
1796{ 2946{
1797#if EV_MULTIPLICITY 2947 postfork = 1;
1798 struct ev_loop *loop = ev_default_loop_ptr;
1799#endif
1800
1801 ev_default_loop_ptr = 0;
1802
1803#ifndef _WIN32
1804 ev_ref (EV_A); /* child watcher */
1805 ev_signal_stop (EV_A_ &childev);
1806#endif
1807
1808 loop_destroy (EV_A);
1809}
1810
1811void
1812ev_default_fork (void)
1813{
1814#if EV_MULTIPLICITY
1815 struct ev_loop *loop = ev_default_loop_ptr;
1816#endif
1817
1818 postfork = 1; /* must be in line with ev_loop_fork */
1819} 2948}
1820 2949
1821/*****************************************************************************/ 2950/*****************************************************************************/
1822 2951
1823void 2952void
1824ev_invoke (EV_P_ void *w, int revents) 2953ev_invoke (EV_P_ void *w, int revents)
1825{ 2954{
1826 EV_CB_INVOKE ((W)w, revents); 2955 EV_CB_INVOKE ((W)w, revents);
1827} 2956}
1828 2957
2958unsigned int
2959ev_pending_count (EV_P) EV_THROW
2960{
2961 int pri;
2962 unsigned int count = 0;
2963
2964 for (pri = NUMPRI; pri--; )
2965 count += pendingcnt [pri];
2966
2967 return count;
2968}
2969
1829void noinline 2970void noinline
1830ev_invoke_pending (EV_P) 2971ev_invoke_pending (EV_P)
1831{ 2972{
1832 int pri; 2973 pendingpri = NUMPRI;
1833 2974
1834 for (pri = NUMPRI; pri--; ) 2975 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2976 {
2977 --pendingpri;
2978
1835 while (pendingcnt [pri]) 2979 while (pendingcnt [pendingpri])
1836 { 2980 {
1837 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2981 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1838 2982
1839 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1840 /* ^ this is no longer true, as pending_w could be here */
1841
1842 p->w->pending = 0; 2983 p->w->pending = 0;
1843 EV_CB_INVOKE (p->w, p->events); 2984 EV_CB_INVOKE (p->w, p->events);
1844 EV_FREQUENT_CHECK; 2985 EV_FREQUENT_CHECK;
1845 } 2986 }
2987 }
1846} 2988}
1847 2989
1848#if EV_IDLE_ENABLE 2990#if EV_IDLE_ENABLE
1849/* make idle watchers pending. this handles the "call-idle */ 2991/* make idle watchers pending. this handles the "call-idle */
1850/* only when higher priorities are idle" logic */ 2992/* only when higher priorities are idle" logic */
… …
1902 EV_FREQUENT_CHECK; 3044 EV_FREQUENT_CHECK;
1903 feed_reverse (EV_A_ (W)w); 3045 feed_reverse (EV_A_ (W)w);
1904 } 3046 }
1905 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3047 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1906 3048
1907 feed_reverse_done (EV_A_ EV_TIMEOUT); 3049 feed_reverse_done (EV_A_ EV_TIMER);
1908 } 3050 }
1909} 3051}
1910 3052
1911#if EV_PERIODIC_ENABLE 3053#if EV_PERIODIC_ENABLE
3054
3055static void noinline
3056periodic_recalc (EV_P_ ev_periodic *w)
3057{
3058 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3059 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3060
3061 /* the above almost always errs on the low side */
3062 while (at <= ev_rt_now)
3063 {
3064 ev_tstamp nat = at + w->interval;
3065
3066 /* when resolution fails us, we use ev_rt_now */
3067 if (expect_false (nat == at))
3068 {
3069 at = ev_rt_now;
3070 break;
3071 }
3072
3073 at = nat;
3074 }
3075
3076 ev_at (w) = at;
3077}
3078
1912/* make periodics pending */ 3079/* make periodics pending */
1913inline_size void 3080inline_size void
1914periodics_reify (EV_P) 3081periodics_reify (EV_P)
1915{ 3082{
1916 EV_FREQUENT_CHECK; 3083 EV_FREQUENT_CHECK;
1917 3084
1918 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3085 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1919 { 3086 {
1920 int feed_count = 0;
1921
1922 do 3087 do
1923 { 3088 {
1924 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3089 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1925 3090
1926 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3091 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1935 ANHE_at_cache (periodics [HEAP0]); 3100 ANHE_at_cache (periodics [HEAP0]);
1936 downheap (periodics, periodiccnt, HEAP0); 3101 downheap (periodics, periodiccnt, HEAP0);
1937 } 3102 }
1938 else if (w->interval) 3103 else if (w->interval)
1939 { 3104 {
1940 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3105 periodic_recalc (EV_A_ w);
1941 /* if next trigger time is not sufficiently in the future, put it there */
1942 /* this might happen because of floating point inexactness */
1943 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1944 {
1945 ev_at (w) += w->interval;
1946
1947 /* if interval is unreasonably low we might still have a time in the past */
1948 /* so correct this. this will make the periodic very inexact, but the user */
1949 /* has effectively asked to get triggered more often than possible */
1950 if (ev_at (w) < ev_rt_now)
1951 ev_at (w) = ev_rt_now;
1952 }
1953
1954 ANHE_at_cache (periodics [HEAP0]); 3106 ANHE_at_cache (periodics [HEAP0]);
1955 downheap (periodics, periodiccnt, HEAP0); 3107 downheap (periodics, periodiccnt, HEAP0);
1956 } 3108 }
1957 else 3109 else
1958 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3110 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1965 feed_reverse_done (EV_A_ EV_PERIODIC); 3117 feed_reverse_done (EV_A_ EV_PERIODIC);
1966 } 3118 }
1967} 3119}
1968 3120
1969/* simply recalculate all periodics */ 3121/* simply recalculate all periodics */
1970/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3122/* TODO: maybe ensure that at least one event happens when jumping forward? */
1971static void noinline 3123static void noinline ecb_cold
1972periodics_reschedule (EV_P) 3124periodics_reschedule (EV_P)
1973{ 3125{
1974 int i; 3126 int i;
1975 3127
1976 /* adjust periodics after time jump */ 3128 /* adjust periodics after time jump */
… …
1979 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3131 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1980 3132
1981 if (w->reschedule_cb) 3133 if (w->reschedule_cb)
1982 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3134 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1983 else if (w->interval) 3135 else if (w->interval)
1984 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3136 periodic_recalc (EV_A_ w);
1985 3137
1986 ANHE_at_cache (periodics [i]); 3138 ANHE_at_cache (periodics [i]);
1987 } 3139 }
1988 3140
1989 reheap (periodics, periodiccnt); 3141 reheap (periodics, periodiccnt);
1990} 3142}
1991#endif 3143#endif
1992 3144
1993/* adjust all timers by a given offset */ 3145/* adjust all timers by a given offset */
1994static void noinline 3146static void noinline ecb_cold
1995timers_reschedule (EV_P_ ev_tstamp adjust) 3147timers_reschedule (EV_P_ ev_tstamp adjust)
1996{ 3148{
1997 int i; 3149 int i;
1998 3150
1999 for (i = 0; i < timercnt; ++i) 3151 for (i = 0; i < timercnt; ++i)
… …
2003 ANHE_at_cache (*he); 3155 ANHE_at_cache (*he);
2004 } 3156 }
2005} 3157}
2006 3158
2007/* fetch new monotonic and realtime times from the kernel */ 3159/* fetch new monotonic and realtime times from the kernel */
2008/* also detetc if there was a timejump, and act accordingly */ 3160/* also detect if there was a timejump, and act accordingly */
2009inline_speed void 3161inline_speed void
2010time_update (EV_P_ ev_tstamp max_block) 3162time_update (EV_P_ ev_tstamp max_block)
2011{ 3163{
2012#if EV_USE_MONOTONIC 3164#if EV_USE_MONOTONIC
2013 if (expect_true (have_monotonic)) 3165 if (expect_true (have_monotonic))
… …
2036 * doesn't hurt either as we only do this on time-jumps or 3188 * doesn't hurt either as we only do this on time-jumps or
2037 * in the unlikely event of having been preempted here. 3189 * in the unlikely event of having been preempted here.
2038 */ 3190 */
2039 for (i = 4; --i; ) 3191 for (i = 4; --i; )
2040 { 3192 {
3193 ev_tstamp diff;
2041 rtmn_diff = ev_rt_now - mn_now; 3194 rtmn_diff = ev_rt_now - mn_now;
2042 3195
3196 diff = odiff - rtmn_diff;
3197
2043 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3198 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2044 return; /* all is well */ 3199 return; /* all is well */
2045 3200
2046 ev_rt_now = ev_time (); 3201 ev_rt_now = ev_time ();
2047 mn_now = get_clock (); 3202 mn_now = get_clock ();
2048 now_floor = mn_now; 3203 now_floor = mn_now;
… …
2070 3225
2071 mn_now = ev_rt_now; 3226 mn_now = ev_rt_now;
2072 } 3227 }
2073} 3228}
2074 3229
2075void 3230int
2076ev_loop (EV_P_ int flags) 3231ev_run (EV_P_ int flags)
2077{ 3232{
2078#if EV_MINIMAL < 2 3233#if EV_FEATURE_API
2079 ++loop_depth; 3234 ++loop_depth;
2080#endif 3235#endif
2081 3236
3237 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3238
2082 loop_done = EVUNLOOP_CANCEL; 3239 loop_done = EVBREAK_CANCEL;
2083 3240
2084 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3241 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2085 3242
2086 do 3243 do
2087 { 3244 {
2088#if EV_VERIFY >= 2 3245#if EV_VERIFY >= 2
2089 ev_loop_verify (EV_A); 3246 ev_verify (EV_A);
2090#endif 3247#endif
2091 3248
2092#ifndef _WIN32 3249#ifndef _WIN32
2093 if (expect_false (curpid)) /* penalise the forking check even more */ 3250 if (expect_false (curpid)) /* penalise the forking check even more */
2094 if (expect_false (getpid () != curpid)) 3251 if (expect_false (getpid () != curpid))
… …
2106 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3263 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2107 EV_INVOKE_PENDING; 3264 EV_INVOKE_PENDING;
2108 } 3265 }
2109#endif 3266#endif
2110 3267
3268#if EV_PREPARE_ENABLE
2111 /* queue prepare watchers (and execute them) */ 3269 /* queue prepare watchers (and execute them) */
2112 if (expect_false (preparecnt)) 3270 if (expect_false (preparecnt))
2113 { 3271 {
2114 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3272 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2115 EV_INVOKE_PENDING; 3273 EV_INVOKE_PENDING;
2116 } 3274 }
3275#endif
3276
3277 if (expect_false (loop_done))
3278 break;
2117 3279
2118 /* we might have forked, so reify kernel state if necessary */ 3280 /* we might have forked, so reify kernel state if necessary */
2119 if (expect_false (postfork)) 3281 if (expect_false (postfork))
2120 loop_fork (EV_A); 3282 loop_fork (EV_A);
2121 3283
… …
2125 /* calculate blocking time */ 3287 /* calculate blocking time */
2126 { 3288 {
2127 ev_tstamp waittime = 0.; 3289 ev_tstamp waittime = 0.;
2128 ev_tstamp sleeptime = 0.; 3290 ev_tstamp sleeptime = 0.;
2129 3291
3292 /* remember old timestamp for io_blocktime calculation */
3293 ev_tstamp prev_mn_now = mn_now;
3294
3295 /* update time to cancel out callback processing overhead */
3296 time_update (EV_A_ 1e100);
3297
3298 /* from now on, we want a pipe-wake-up */
3299 pipe_write_wanted = 1;
3300
3301 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3302
2130 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3303 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2131 { 3304 {
2132 /* remember old timestamp for io_blocktime calculation */
2133 ev_tstamp prev_mn_now = mn_now;
2134
2135 /* update time to cancel out callback processing overhead */
2136 time_update (EV_A_ 1e100);
2137
2138 waittime = MAX_BLOCKTIME; 3305 waittime = MAX_BLOCKTIME;
2139 3306
2140 if (timercnt) 3307 if (timercnt)
2141 { 3308 {
2142 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3309 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2143 if (waittime > to) waittime = to; 3310 if (waittime > to) waittime = to;
2144 } 3311 }
2145 3312
2146#if EV_PERIODIC_ENABLE 3313#if EV_PERIODIC_ENABLE
2147 if (periodiccnt) 3314 if (periodiccnt)
2148 { 3315 {
2149 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3316 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2150 if (waittime > to) waittime = to; 3317 if (waittime > to) waittime = to;
2151 } 3318 }
2152#endif 3319#endif
2153 3320
2154 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3321 /* don't let timeouts decrease the waittime below timeout_blocktime */
2155 if (expect_false (waittime < timeout_blocktime)) 3322 if (expect_false (waittime < timeout_blocktime))
2156 waittime = timeout_blocktime; 3323 waittime = timeout_blocktime;
3324
3325 /* at this point, we NEED to wait, so we have to ensure */
3326 /* to pass a minimum nonzero value to the backend */
3327 if (expect_false (waittime < backend_mintime))
3328 waittime = backend_mintime;
2157 3329
2158 /* extra check because io_blocktime is commonly 0 */ 3330 /* extra check because io_blocktime is commonly 0 */
2159 if (expect_false (io_blocktime)) 3331 if (expect_false (io_blocktime))
2160 { 3332 {
2161 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3333 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2162 3334
2163 if (sleeptime > waittime - backend_fudge) 3335 if (sleeptime > waittime - backend_mintime)
2164 sleeptime = waittime - backend_fudge; 3336 sleeptime = waittime - backend_mintime;
2165 3337
2166 if (expect_true (sleeptime > 0.)) 3338 if (expect_true (sleeptime > 0.))
2167 { 3339 {
2168 ev_sleep (sleeptime); 3340 ev_sleep (sleeptime);
2169 waittime -= sleeptime; 3341 waittime -= sleeptime;
2170 } 3342 }
2171 } 3343 }
2172 } 3344 }
2173 3345
2174#if EV_MINIMAL < 2 3346#if EV_FEATURE_API
2175 ++loop_count; 3347 ++loop_count;
2176#endif 3348#endif
3349 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2177 backend_poll (EV_A_ waittime); 3350 backend_poll (EV_A_ waittime);
3351 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3352
3353 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3354
3355 ECB_MEMORY_FENCE_ACQUIRE;
3356 if (pipe_write_skipped)
3357 {
3358 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3359 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3360 }
3361
2178 3362
2179 /* update ev_rt_now, do magic */ 3363 /* update ev_rt_now, do magic */
2180 time_update (EV_A_ waittime + sleeptime); 3364 time_update (EV_A_ waittime + sleeptime);
2181 } 3365 }
2182 3366
… …
2189#if EV_IDLE_ENABLE 3373#if EV_IDLE_ENABLE
2190 /* queue idle watchers unless other events are pending */ 3374 /* queue idle watchers unless other events are pending */
2191 idle_reify (EV_A); 3375 idle_reify (EV_A);
2192#endif 3376#endif
2193 3377
3378#if EV_CHECK_ENABLE
2194 /* queue check watchers, to be executed first */ 3379 /* queue check watchers, to be executed first */
2195 if (expect_false (checkcnt)) 3380 if (expect_false (checkcnt))
2196 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3381 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3382#endif
2197 3383
2198 EV_INVOKE_PENDING; 3384 EV_INVOKE_PENDING;
2199 } 3385 }
2200 while (expect_true ( 3386 while (expect_true (
2201 activecnt 3387 activecnt
2202 && !loop_done 3388 && !loop_done
2203 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3389 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2204 )); 3390 ));
2205 3391
2206 if (loop_done == EVUNLOOP_ONE) 3392 if (loop_done == EVBREAK_ONE)
2207 loop_done = EVUNLOOP_CANCEL; 3393 loop_done = EVBREAK_CANCEL;
2208 3394
2209#if EV_MINIMAL < 2 3395#if EV_FEATURE_API
2210 --loop_depth; 3396 --loop_depth;
2211#endif 3397#endif
3398
3399 return activecnt;
2212} 3400}
2213 3401
2214void 3402void
2215ev_unloop (EV_P_ int how) 3403ev_break (EV_P_ int how) EV_THROW
2216{ 3404{
2217 loop_done = how; 3405 loop_done = how;
2218} 3406}
2219 3407
2220void 3408void
2221ev_ref (EV_P) 3409ev_ref (EV_P) EV_THROW
2222{ 3410{
2223 ++activecnt; 3411 ++activecnt;
2224} 3412}
2225 3413
2226void 3414void
2227ev_unref (EV_P) 3415ev_unref (EV_P) EV_THROW
2228{ 3416{
2229 --activecnt; 3417 --activecnt;
2230} 3418}
2231 3419
2232void 3420void
2233ev_now_update (EV_P) 3421ev_now_update (EV_P) EV_THROW
2234{ 3422{
2235 time_update (EV_A_ 1e100); 3423 time_update (EV_A_ 1e100);
2236} 3424}
2237 3425
2238void 3426void
2239ev_suspend (EV_P) 3427ev_suspend (EV_P) EV_THROW
2240{ 3428{
2241 ev_now_update (EV_A); 3429 ev_now_update (EV_A);
2242} 3430}
2243 3431
2244void 3432void
2245ev_resume (EV_P) 3433ev_resume (EV_P) EV_THROW
2246{ 3434{
2247 ev_tstamp mn_prev = mn_now; 3435 ev_tstamp mn_prev = mn_now;
2248 3436
2249 ev_now_update (EV_A); 3437 ev_now_update (EV_A);
2250 timers_reschedule (EV_A_ mn_now - mn_prev); 3438 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2267inline_size void 3455inline_size void
2268wlist_del (WL *head, WL elem) 3456wlist_del (WL *head, WL elem)
2269{ 3457{
2270 while (*head) 3458 while (*head)
2271 { 3459 {
2272 if (*head == elem) 3460 if (expect_true (*head == elem))
2273 { 3461 {
2274 *head = elem->next; 3462 *head = elem->next;
2275 return; 3463 break;
2276 } 3464 }
2277 3465
2278 head = &(*head)->next; 3466 head = &(*head)->next;
2279 } 3467 }
2280} 3468}
… …
2289 w->pending = 0; 3477 w->pending = 0;
2290 } 3478 }
2291} 3479}
2292 3480
2293int 3481int
2294ev_clear_pending (EV_P_ void *w) 3482ev_clear_pending (EV_P_ void *w) EV_THROW
2295{ 3483{
2296 W w_ = (W)w; 3484 W w_ = (W)w;
2297 int pending = w_->pending; 3485 int pending = w_->pending;
2298 3486
2299 if (expect_true (pending)) 3487 if (expect_true (pending))
… …
2332} 3520}
2333 3521
2334/*****************************************************************************/ 3522/*****************************************************************************/
2335 3523
2336void noinline 3524void noinline
2337ev_io_start (EV_P_ ev_io *w) 3525ev_io_start (EV_P_ ev_io *w) EV_THROW
2338{ 3526{
2339 int fd = w->fd; 3527 int fd = w->fd;
2340 3528
2341 if (expect_false (ev_is_active (w))) 3529 if (expect_false (ev_is_active (w)))
2342 return; 3530 return;
2343 3531
2344 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3532 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2345 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3533 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2346 3534
2347 EV_FREQUENT_CHECK; 3535 EV_FREQUENT_CHECK;
2348 3536
2349 ev_start (EV_A_ (W)w, 1); 3537 ev_start (EV_A_ (W)w, 1);
2350 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3538 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2351 wlist_add (&anfds[fd].head, (WL)w); 3539 wlist_add (&anfds[fd].head, (WL)w);
2352 3540
3541 /* common bug, apparently */
3542 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3543
2353 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3544 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2354 w->events &= ~EV__IOFDSET; 3545 w->events &= ~EV__IOFDSET;
2355 3546
2356 EV_FREQUENT_CHECK; 3547 EV_FREQUENT_CHECK;
2357} 3548}
2358 3549
2359void noinline 3550void noinline
2360ev_io_stop (EV_P_ ev_io *w) 3551ev_io_stop (EV_P_ ev_io *w) EV_THROW
2361{ 3552{
2362 clear_pending (EV_A_ (W)w); 3553 clear_pending (EV_A_ (W)w);
2363 if (expect_false (!ev_is_active (w))) 3554 if (expect_false (!ev_is_active (w)))
2364 return; 3555 return;
2365 3556
… …
2368 EV_FREQUENT_CHECK; 3559 EV_FREQUENT_CHECK;
2369 3560
2370 wlist_del (&anfds[w->fd].head, (WL)w); 3561 wlist_del (&anfds[w->fd].head, (WL)w);
2371 ev_stop (EV_A_ (W)w); 3562 ev_stop (EV_A_ (W)w);
2372 3563
2373 fd_change (EV_A_ w->fd, 1); 3564 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2374 3565
2375 EV_FREQUENT_CHECK; 3566 EV_FREQUENT_CHECK;
2376} 3567}
2377 3568
2378void noinline 3569void noinline
2379ev_timer_start (EV_P_ ev_timer *w) 3570ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2380{ 3571{
2381 if (expect_false (ev_is_active (w))) 3572 if (expect_false (ev_is_active (w)))
2382 return; 3573 return;
2383 3574
2384 ev_at (w) += mn_now; 3575 ev_at (w) += mn_now;
… …
2398 3589
2399 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3590 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2400} 3591}
2401 3592
2402void noinline 3593void noinline
2403ev_timer_stop (EV_P_ ev_timer *w) 3594ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2404{ 3595{
2405 clear_pending (EV_A_ (W)w); 3596 clear_pending (EV_A_ (W)w);
2406 if (expect_false (!ev_is_active (w))) 3597 if (expect_false (!ev_is_active (w)))
2407 return; 3598 return;
2408 3599
… …
2420 timers [active] = timers [timercnt + HEAP0]; 3611 timers [active] = timers [timercnt + HEAP0];
2421 adjustheap (timers, timercnt, active); 3612 adjustheap (timers, timercnt, active);
2422 } 3613 }
2423 } 3614 }
2424 3615
2425 EV_FREQUENT_CHECK;
2426
2427 ev_at (w) -= mn_now; 3616 ev_at (w) -= mn_now;
2428 3617
2429 ev_stop (EV_A_ (W)w); 3618 ev_stop (EV_A_ (W)w);
3619
3620 EV_FREQUENT_CHECK;
2430} 3621}
2431 3622
2432void noinline 3623void noinline
2433ev_timer_again (EV_P_ ev_timer *w) 3624ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2434{ 3625{
2435 EV_FREQUENT_CHECK; 3626 EV_FREQUENT_CHECK;
3627
3628 clear_pending (EV_A_ (W)w);
2436 3629
2437 if (ev_is_active (w)) 3630 if (ev_is_active (w))
2438 { 3631 {
2439 if (w->repeat) 3632 if (w->repeat)
2440 { 3633 {
… …
2452 } 3645 }
2453 3646
2454 EV_FREQUENT_CHECK; 3647 EV_FREQUENT_CHECK;
2455} 3648}
2456 3649
3650ev_tstamp
3651ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3652{
3653 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3654}
3655
2457#if EV_PERIODIC_ENABLE 3656#if EV_PERIODIC_ENABLE
2458void noinline 3657void noinline
2459ev_periodic_start (EV_P_ ev_periodic *w) 3658ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2460{ 3659{
2461 if (expect_false (ev_is_active (w))) 3660 if (expect_false (ev_is_active (w)))
2462 return; 3661 return;
2463 3662
2464 if (w->reschedule_cb) 3663 if (w->reschedule_cb)
2465 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3664 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2466 else if (w->interval) 3665 else if (w->interval)
2467 { 3666 {
2468 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3667 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2469 /* this formula differs from the one in periodic_reify because we do not always round up */ 3668 periodic_recalc (EV_A_ w);
2470 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2471 } 3669 }
2472 else 3670 else
2473 ev_at (w) = w->offset; 3671 ev_at (w) = w->offset;
2474 3672
2475 EV_FREQUENT_CHECK; 3673 EV_FREQUENT_CHECK;
… …
2485 3683
2486 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3684 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2487} 3685}
2488 3686
2489void noinline 3687void noinline
2490ev_periodic_stop (EV_P_ ev_periodic *w) 3688ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2491{ 3689{
2492 clear_pending (EV_A_ (W)w); 3690 clear_pending (EV_A_ (W)w);
2493 if (expect_false (!ev_is_active (w))) 3691 if (expect_false (!ev_is_active (w)))
2494 return; 3692 return;
2495 3693
… …
2507 periodics [active] = periodics [periodiccnt + HEAP0]; 3705 periodics [active] = periodics [periodiccnt + HEAP0];
2508 adjustheap (periodics, periodiccnt, active); 3706 adjustheap (periodics, periodiccnt, active);
2509 } 3707 }
2510 } 3708 }
2511 3709
2512 EV_FREQUENT_CHECK;
2513
2514 ev_stop (EV_A_ (W)w); 3710 ev_stop (EV_A_ (W)w);
3711
3712 EV_FREQUENT_CHECK;
2515} 3713}
2516 3714
2517void noinline 3715void noinline
2518ev_periodic_again (EV_P_ ev_periodic *w) 3716ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2519{ 3717{
2520 /* TODO: use adjustheap and recalculation */ 3718 /* TODO: use adjustheap and recalculation */
2521 ev_periodic_stop (EV_A_ w); 3719 ev_periodic_stop (EV_A_ w);
2522 ev_periodic_start (EV_A_ w); 3720 ev_periodic_start (EV_A_ w);
2523} 3721}
… …
2525 3723
2526#ifndef SA_RESTART 3724#ifndef SA_RESTART
2527# define SA_RESTART 0 3725# define SA_RESTART 0
2528#endif 3726#endif
2529 3727
3728#if EV_SIGNAL_ENABLE
3729
2530void noinline 3730void noinline
2531ev_signal_start (EV_P_ ev_signal *w) 3731ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2532{ 3732{
2533#if EV_MULTIPLICITY
2534 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2535#endif
2536 if (expect_false (ev_is_active (w))) 3733 if (expect_false (ev_is_active (w)))
2537 return; 3734 return;
2538 3735
2539 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3736 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2540 3737
2541 evpipe_init (EV_A); 3738#if EV_MULTIPLICITY
3739 assert (("libev: a signal must not be attached to two different loops",
3740 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2542 3741
2543 EV_FREQUENT_CHECK; 3742 signals [w->signum - 1].loop = EV_A;
3743 ECB_MEMORY_FENCE_RELEASE;
3744#endif
2544 3745
3746 EV_FREQUENT_CHECK;
3747
3748#if EV_USE_SIGNALFD
3749 if (sigfd == -2)
2545 { 3750 {
2546#ifndef _WIN32 3751 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2547 sigset_t full, prev; 3752 if (sigfd < 0 && errno == EINVAL)
2548 sigfillset (&full); 3753 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2549 sigprocmask (SIG_SETMASK, &full, &prev);
2550#endif
2551 3754
2552 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3755 if (sigfd >= 0)
3756 {
3757 fd_intern (sigfd); /* doing it twice will not hurt */
2553 3758
2554#ifndef _WIN32 3759 sigemptyset (&sigfd_set);
2555 sigprocmask (SIG_SETMASK, &prev, 0); 3760
2556#endif 3761 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3762 ev_set_priority (&sigfd_w, EV_MAXPRI);
3763 ev_io_start (EV_A_ &sigfd_w);
3764 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3765 }
2557 } 3766 }
3767
3768 if (sigfd >= 0)
3769 {
3770 /* TODO: check .head */
3771 sigaddset (&sigfd_set, w->signum);
3772 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3773
3774 signalfd (sigfd, &sigfd_set, 0);
3775 }
3776#endif
2558 3777
2559 ev_start (EV_A_ (W)w, 1); 3778 ev_start (EV_A_ (W)w, 1);
2560 wlist_add (&signals [w->signum - 1].head, (WL)w); 3779 wlist_add (&signals [w->signum - 1].head, (WL)w);
2561 3780
2562 if (!((WL)w)->next) 3781 if (!((WL)w)->next)
3782# if EV_USE_SIGNALFD
3783 if (sigfd < 0) /*TODO*/
3784# endif
2563 { 3785 {
2564#if _WIN32 3786# ifdef _WIN32
3787 evpipe_init (EV_A);
3788
2565 signal (w->signum, ev_sighandler); 3789 signal (w->signum, ev_sighandler);
2566#else 3790# else
2567 struct sigaction sa; 3791 struct sigaction sa;
3792
3793 evpipe_init (EV_A);
3794
2568 sa.sa_handler = ev_sighandler; 3795 sa.sa_handler = ev_sighandler;
2569 sigfillset (&sa.sa_mask); 3796 sigfillset (&sa.sa_mask);
2570 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3797 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2571 sigaction (w->signum, &sa, 0); 3798 sigaction (w->signum, &sa, 0);
3799
3800 if (origflags & EVFLAG_NOSIGMASK)
3801 {
3802 sigemptyset (&sa.sa_mask);
3803 sigaddset (&sa.sa_mask, w->signum);
3804 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3805 }
2572#endif 3806#endif
2573 } 3807 }
2574 3808
2575 EV_FREQUENT_CHECK; 3809 EV_FREQUENT_CHECK;
2576} 3810}
2577 3811
2578void noinline 3812void noinline
2579ev_signal_stop (EV_P_ ev_signal *w) 3813ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2580{ 3814{
2581 clear_pending (EV_A_ (W)w); 3815 clear_pending (EV_A_ (W)w);
2582 if (expect_false (!ev_is_active (w))) 3816 if (expect_false (!ev_is_active (w)))
2583 return; 3817 return;
2584 3818
… …
2586 3820
2587 wlist_del (&signals [w->signum - 1].head, (WL)w); 3821 wlist_del (&signals [w->signum - 1].head, (WL)w);
2588 ev_stop (EV_A_ (W)w); 3822 ev_stop (EV_A_ (W)w);
2589 3823
2590 if (!signals [w->signum - 1].head) 3824 if (!signals [w->signum - 1].head)
3825 {
3826#if EV_MULTIPLICITY
3827 signals [w->signum - 1].loop = 0; /* unattach from signal */
3828#endif
3829#if EV_USE_SIGNALFD
3830 if (sigfd >= 0)
3831 {
3832 sigset_t ss;
3833
3834 sigemptyset (&ss);
3835 sigaddset (&ss, w->signum);
3836 sigdelset (&sigfd_set, w->signum);
3837
3838 signalfd (sigfd, &sigfd_set, 0);
3839 sigprocmask (SIG_UNBLOCK, &ss, 0);
3840 }
3841 else
3842#endif
2591 signal (w->signum, SIG_DFL); 3843 signal (w->signum, SIG_DFL);
3844 }
2592 3845
2593 EV_FREQUENT_CHECK; 3846 EV_FREQUENT_CHECK;
2594} 3847}
3848
3849#endif
3850
3851#if EV_CHILD_ENABLE
2595 3852
2596void 3853void
2597ev_child_start (EV_P_ ev_child *w) 3854ev_child_start (EV_P_ ev_child *w) EV_THROW
2598{ 3855{
2599#if EV_MULTIPLICITY 3856#if EV_MULTIPLICITY
2600 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3857 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2601#endif 3858#endif
2602 if (expect_false (ev_is_active (w))) 3859 if (expect_false (ev_is_active (w)))
2603 return; 3860 return;
2604 3861
2605 EV_FREQUENT_CHECK; 3862 EV_FREQUENT_CHECK;
2606 3863
2607 ev_start (EV_A_ (W)w, 1); 3864 ev_start (EV_A_ (W)w, 1);
2608 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3865 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2609 3866
2610 EV_FREQUENT_CHECK; 3867 EV_FREQUENT_CHECK;
2611} 3868}
2612 3869
2613void 3870void
2614ev_child_stop (EV_P_ ev_child *w) 3871ev_child_stop (EV_P_ ev_child *w) EV_THROW
2615{ 3872{
2616 clear_pending (EV_A_ (W)w); 3873 clear_pending (EV_A_ (W)w);
2617 if (expect_false (!ev_is_active (w))) 3874 if (expect_false (!ev_is_active (w)))
2618 return; 3875 return;
2619 3876
2620 EV_FREQUENT_CHECK; 3877 EV_FREQUENT_CHECK;
2621 3878
2622 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3879 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2623 ev_stop (EV_A_ (W)w); 3880 ev_stop (EV_A_ (W)w);
2624 3881
2625 EV_FREQUENT_CHECK; 3882 EV_FREQUENT_CHECK;
2626} 3883}
3884
3885#endif
2627 3886
2628#if EV_STAT_ENABLE 3887#if EV_STAT_ENABLE
2629 3888
2630# ifdef _WIN32 3889# ifdef _WIN32
2631# undef lstat 3890# undef lstat
… …
2637#define MIN_STAT_INTERVAL 0.1074891 3896#define MIN_STAT_INTERVAL 0.1074891
2638 3897
2639static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3898static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2640 3899
2641#if EV_USE_INOTIFY 3900#if EV_USE_INOTIFY
2642# define EV_INOTIFY_BUFSIZE 8192 3901
3902/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3903# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2643 3904
2644static void noinline 3905static void noinline
2645infy_add (EV_P_ ev_stat *w) 3906infy_add (EV_P_ ev_stat *w)
2646{ 3907{
2647 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); 3908 w->wd = inotify_add_watch (fs_fd, w->path,
3909 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3910 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3911 | IN_DONT_FOLLOW | IN_MASK_ADD);
2648 3912
2649 if (w->wd < 0) 3913 if (w->wd >= 0)
3914 {
3915 struct statfs sfs;
3916
3917 /* now local changes will be tracked by inotify, but remote changes won't */
3918 /* unless the filesystem is known to be local, we therefore still poll */
3919 /* also do poll on <2.6.25, but with normal frequency */
3920
3921 if (!fs_2625)
3922 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3923 else if (!statfs (w->path, &sfs)
3924 && (sfs.f_type == 0x1373 /* devfs */
3925 || sfs.f_type == 0x4006 /* fat */
3926 || sfs.f_type == 0x4d44 /* msdos */
3927 || sfs.f_type == 0xEF53 /* ext2/3 */
3928 || sfs.f_type == 0x72b6 /* jffs2 */
3929 || sfs.f_type == 0x858458f6 /* ramfs */
3930 || sfs.f_type == 0x5346544e /* ntfs */
3931 || sfs.f_type == 0x3153464a /* jfs */
3932 || sfs.f_type == 0x9123683e /* btrfs */
3933 || sfs.f_type == 0x52654973 /* reiser3 */
3934 || sfs.f_type == 0x01021994 /* tmpfs */
3935 || sfs.f_type == 0x58465342 /* xfs */))
3936 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3937 else
3938 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2650 { 3939 }
3940 else
3941 {
3942 /* can't use inotify, continue to stat */
2651 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3943 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2652 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2653 3944
2654 /* monitor some parent directory for speedup hints */ 3945 /* if path is not there, monitor some parent directory for speedup hints */
2655 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3946 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2656 /* but an efficiency issue only */ 3947 /* but an efficiency issue only */
2657 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3948 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2658 { 3949 {
2659 char path [4096]; 3950 char path [4096];
… …
2669 if (!pend || pend == path) 3960 if (!pend || pend == path)
2670 break; 3961 break;
2671 3962
2672 *pend = 0; 3963 *pend = 0;
2673 w->wd = inotify_add_watch (fs_fd, path, mask); 3964 w->wd = inotify_add_watch (fs_fd, path, mask);
2674 } 3965 }
2675 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3966 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2676 } 3967 }
2677 } 3968 }
2678 3969
2679 if (w->wd >= 0) 3970 if (w->wd >= 0)
2680 {
2681 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3971 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2682 3972
2683 /* now local changes will be tracked by inotify, but remote changes won't */ 3973 /* now re-arm timer, if required */
2684 /* unless the filesystem it known to be local, we therefore still poll */ 3974 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2685 /* also do poll on <2.6.25, but with normal frequency */
2686 struct statfs sfs;
2687
2688 if (fs_2625 && !statfs (w->path, &sfs))
2689 if (sfs.f_type == 0x1373 /* devfs */
2690 || sfs.f_type == 0xEF53 /* ext2/3 */
2691 || sfs.f_type == 0x3153464a /* jfs */
2692 || sfs.f_type == 0x52654973 /* reiser3 */
2693 || sfs.f_type == 0x01021994 /* tempfs */
2694 || sfs.f_type == 0x58465342 /* xfs */)
2695 return;
2696
2697 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2698 ev_timer_again (EV_A_ &w->timer); 3975 ev_timer_again (EV_A_ &w->timer);
2699 } 3976 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2700} 3977}
2701 3978
2702static void noinline 3979static void noinline
2703infy_del (EV_P_ ev_stat *w) 3980infy_del (EV_P_ ev_stat *w)
2704{ 3981{
… …
2707 3984
2708 if (wd < 0) 3985 if (wd < 0)
2709 return; 3986 return;
2710 3987
2711 w->wd = -2; 3988 w->wd = -2;
2712 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3989 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2713 wlist_del (&fs_hash [slot].head, (WL)w); 3990 wlist_del (&fs_hash [slot].head, (WL)w);
2714 3991
2715 /* remove this watcher, if others are watching it, they will rearm */ 3992 /* remove this watcher, if others are watching it, they will rearm */
2716 inotify_rm_watch (fs_fd, wd); 3993 inotify_rm_watch (fs_fd, wd);
2717} 3994}
… …
2719static void noinline 3996static void noinline
2720infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3997infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2721{ 3998{
2722 if (slot < 0) 3999 if (slot < 0)
2723 /* overflow, need to check for all hash slots */ 4000 /* overflow, need to check for all hash slots */
2724 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4001 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2725 infy_wd (EV_A_ slot, wd, ev); 4002 infy_wd (EV_A_ slot, wd, ev);
2726 else 4003 else
2727 { 4004 {
2728 WL w_; 4005 WL w_;
2729 4006
2730 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4007 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2731 { 4008 {
2732 ev_stat *w = (ev_stat *)w_; 4009 ev_stat *w = (ev_stat *)w_;
2733 w_ = w_->next; /* lets us remove this watcher and all before it */ 4010 w_ = w_->next; /* lets us remove this watcher and all before it */
2734 4011
2735 if (w->wd == wd || wd == -1) 4012 if (w->wd == wd || wd == -1)
2736 { 4013 {
2737 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4014 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2738 { 4015 {
2739 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4016 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2740 w->wd = -1; 4017 w->wd = -1;
2741 infy_add (EV_A_ w); /* re-add, no matter what */ 4018 infy_add (EV_A_ w); /* re-add, no matter what */
2742 } 4019 }
2743 4020
2744 stat_timer_cb (EV_A_ &w->timer, 0); 4021 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2749 4026
2750static void 4027static void
2751infy_cb (EV_P_ ev_io *w, int revents) 4028infy_cb (EV_P_ ev_io *w, int revents)
2752{ 4029{
2753 char buf [EV_INOTIFY_BUFSIZE]; 4030 char buf [EV_INOTIFY_BUFSIZE];
2754 struct inotify_event *ev = (struct inotify_event *)buf;
2755 int ofs; 4031 int ofs;
2756 int len = read (fs_fd, buf, sizeof (buf)); 4032 int len = read (fs_fd, buf, sizeof (buf));
2757 4033
2758 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4034 for (ofs = 0; ofs < len; )
4035 {
4036 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2759 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4037 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4038 ofs += sizeof (struct inotify_event) + ev->len;
4039 }
2760} 4040}
2761 4041
2762inline_size void 4042inline_size void ecb_cold
2763check_2625 (EV_P) 4043ev_check_2625 (EV_P)
2764{ 4044{
2765 /* kernels < 2.6.25 are borked 4045 /* kernels < 2.6.25 are borked
2766 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4046 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2767 */ 4047 */
2768 struct utsname buf; 4048 if (ev_linux_version () < 0x020619)
2769 int major, minor, micro;
2770
2771 if (uname (&buf))
2772 return; 4049 return;
2773 4050
2774 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2775 return;
2776
2777 if (major < 2
2778 || (major == 2 && minor < 6)
2779 || (major == 2 && minor == 6 && micro < 25))
2780 return;
2781
2782 fs_2625 = 1; 4051 fs_2625 = 1;
4052}
4053
4054inline_size int
4055infy_newfd (void)
4056{
4057#if defined IN_CLOEXEC && defined IN_NONBLOCK
4058 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4059 if (fd >= 0)
4060 return fd;
4061#endif
4062 return inotify_init ();
2783} 4063}
2784 4064
2785inline_size void 4065inline_size void
2786infy_init (EV_P) 4066infy_init (EV_P)
2787{ 4067{
2788 if (fs_fd != -2) 4068 if (fs_fd != -2)
2789 return; 4069 return;
2790 4070
2791 fs_fd = -1; 4071 fs_fd = -1;
2792 4072
2793 check_2625 (EV_A); 4073 ev_check_2625 (EV_A);
2794 4074
2795 fs_fd = inotify_init (); 4075 fs_fd = infy_newfd ();
2796 4076
2797 if (fs_fd >= 0) 4077 if (fs_fd >= 0)
2798 { 4078 {
4079 fd_intern (fs_fd);
2799 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4080 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2800 ev_set_priority (&fs_w, EV_MAXPRI); 4081 ev_set_priority (&fs_w, EV_MAXPRI);
2801 ev_io_start (EV_A_ &fs_w); 4082 ev_io_start (EV_A_ &fs_w);
4083 ev_unref (EV_A);
2802 } 4084 }
2803} 4085}
2804 4086
2805inline_size void 4087inline_size void
2806infy_fork (EV_P) 4088infy_fork (EV_P)
… …
2808 int slot; 4090 int slot;
2809 4091
2810 if (fs_fd < 0) 4092 if (fs_fd < 0)
2811 return; 4093 return;
2812 4094
4095 ev_ref (EV_A);
4096 ev_io_stop (EV_A_ &fs_w);
2813 close (fs_fd); 4097 close (fs_fd);
2814 fs_fd = inotify_init (); 4098 fs_fd = infy_newfd ();
2815 4099
4100 if (fs_fd >= 0)
4101 {
4102 fd_intern (fs_fd);
4103 ev_io_set (&fs_w, fs_fd, EV_READ);
4104 ev_io_start (EV_A_ &fs_w);
4105 ev_unref (EV_A);
4106 }
4107
2816 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4108 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2817 { 4109 {
2818 WL w_ = fs_hash [slot].head; 4110 WL w_ = fs_hash [slot].head;
2819 fs_hash [slot].head = 0; 4111 fs_hash [slot].head = 0;
2820 4112
2821 while (w_) 4113 while (w_)
… …
2826 w->wd = -1; 4118 w->wd = -1;
2827 4119
2828 if (fs_fd >= 0) 4120 if (fs_fd >= 0)
2829 infy_add (EV_A_ w); /* re-add, no matter what */ 4121 infy_add (EV_A_ w); /* re-add, no matter what */
2830 else 4122 else
4123 {
4124 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4125 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2831 ev_timer_again (EV_A_ &w->timer); 4126 ev_timer_again (EV_A_ &w->timer);
4127 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4128 }
2832 } 4129 }
2833 } 4130 }
2834} 4131}
2835 4132
2836#endif 4133#endif
… …
2840#else 4137#else
2841# define EV_LSTAT(p,b) lstat (p, b) 4138# define EV_LSTAT(p,b) lstat (p, b)
2842#endif 4139#endif
2843 4140
2844void 4141void
2845ev_stat_stat (EV_P_ ev_stat *w) 4142ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2846{ 4143{
2847 if (lstat (w->path, &w->attr) < 0) 4144 if (lstat (w->path, &w->attr) < 0)
2848 w->attr.st_nlink = 0; 4145 w->attr.st_nlink = 0;
2849 else if (!w->attr.st_nlink) 4146 else if (!w->attr.st_nlink)
2850 w->attr.st_nlink = 1; 4147 w->attr.st_nlink = 1;
… …
2853static void noinline 4150static void noinline
2854stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4151stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2855{ 4152{
2856 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4153 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2857 4154
2858 /* we copy this here each the time so that */ 4155 ev_statdata prev = w->attr;
2859 /* prev has the old value when the callback gets invoked */
2860 w->prev = w->attr;
2861 ev_stat_stat (EV_A_ w); 4156 ev_stat_stat (EV_A_ w);
2862 4157
2863 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4158 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2864 if ( 4159 if (
2865 w->prev.st_dev != w->attr.st_dev 4160 prev.st_dev != w->attr.st_dev
2866 || w->prev.st_ino != w->attr.st_ino 4161 || prev.st_ino != w->attr.st_ino
2867 || w->prev.st_mode != w->attr.st_mode 4162 || prev.st_mode != w->attr.st_mode
2868 || w->prev.st_nlink != w->attr.st_nlink 4163 || prev.st_nlink != w->attr.st_nlink
2869 || w->prev.st_uid != w->attr.st_uid 4164 || prev.st_uid != w->attr.st_uid
2870 || w->prev.st_gid != w->attr.st_gid 4165 || prev.st_gid != w->attr.st_gid
2871 || w->prev.st_rdev != w->attr.st_rdev 4166 || prev.st_rdev != w->attr.st_rdev
2872 || w->prev.st_size != w->attr.st_size 4167 || prev.st_size != w->attr.st_size
2873 || w->prev.st_atime != w->attr.st_atime 4168 || prev.st_atime != w->attr.st_atime
2874 || w->prev.st_mtime != w->attr.st_mtime 4169 || prev.st_mtime != w->attr.st_mtime
2875 || w->prev.st_ctime != w->attr.st_ctime 4170 || prev.st_ctime != w->attr.st_ctime
2876 ) { 4171 ) {
4172 /* we only update w->prev on actual differences */
4173 /* in case we test more often than invoke the callback, */
4174 /* to ensure that prev is always different to attr */
4175 w->prev = prev;
4176
2877 #if EV_USE_INOTIFY 4177 #if EV_USE_INOTIFY
2878 if (fs_fd >= 0) 4178 if (fs_fd >= 0)
2879 { 4179 {
2880 infy_del (EV_A_ w); 4180 infy_del (EV_A_ w);
2881 infy_add (EV_A_ w); 4181 infy_add (EV_A_ w);
… …
2886 ev_feed_event (EV_A_ w, EV_STAT); 4186 ev_feed_event (EV_A_ w, EV_STAT);
2887 } 4187 }
2888} 4188}
2889 4189
2890void 4190void
2891ev_stat_start (EV_P_ ev_stat *w) 4191ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2892{ 4192{
2893 if (expect_false (ev_is_active (w))) 4193 if (expect_false (ev_is_active (w)))
2894 return; 4194 return;
2895 4195
2896 ev_stat_stat (EV_A_ w); 4196 ev_stat_stat (EV_A_ w);
… …
2906 4206
2907 if (fs_fd >= 0) 4207 if (fs_fd >= 0)
2908 infy_add (EV_A_ w); 4208 infy_add (EV_A_ w);
2909 else 4209 else
2910#endif 4210#endif
4211 {
2911 ev_timer_again (EV_A_ &w->timer); 4212 ev_timer_again (EV_A_ &w->timer);
4213 ev_unref (EV_A);
4214 }
2912 4215
2913 ev_start (EV_A_ (W)w, 1); 4216 ev_start (EV_A_ (W)w, 1);
2914 4217
2915 EV_FREQUENT_CHECK; 4218 EV_FREQUENT_CHECK;
2916} 4219}
2917 4220
2918void 4221void
2919ev_stat_stop (EV_P_ ev_stat *w) 4222ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2920{ 4223{
2921 clear_pending (EV_A_ (W)w); 4224 clear_pending (EV_A_ (W)w);
2922 if (expect_false (!ev_is_active (w))) 4225 if (expect_false (!ev_is_active (w)))
2923 return; 4226 return;
2924 4227
2925 EV_FREQUENT_CHECK; 4228 EV_FREQUENT_CHECK;
2926 4229
2927#if EV_USE_INOTIFY 4230#if EV_USE_INOTIFY
2928 infy_del (EV_A_ w); 4231 infy_del (EV_A_ w);
2929#endif 4232#endif
4233
4234 if (ev_is_active (&w->timer))
4235 {
4236 ev_ref (EV_A);
2930 ev_timer_stop (EV_A_ &w->timer); 4237 ev_timer_stop (EV_A_ &w->timer);
4238 }
2931 4239
2932 ev_stop (EV_A_ (W)w); 4240 ev_stop (EV_A_ (W)w);
2933 4241
2934 EV_FREQUENT_CHECK; 4242 EV_FREQUENT_CHECK;
2935} 4243}
2936#endif 4244#endif
2937 4245
2938#if EV_IDLE_ENABLE 4246#if EV_IDLE_ENABLE
2939void 4247void
2940ev_idle_start (EV_P_ ev_idle *w) 4248ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2941{ 4249{
2942 if (expect_false (ev_is_active (w))) 4250 if (expect_false (ev_is_active (w)))
2943 return; 4251 return;
2944 4252
2945 pri_adjust (EV_A_ (W)w); 4253 pri_adjust (EV_A_ (W)w);
… …
2958 4266
2959 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
2960} 4268}
2961 4269
2962void 4270void
2963ev_idle_stop (EV_P_ ev_idle *w) 4271ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2964{ 4272{
2965 clear_pending (EV_A_ (W)w); 4273 clear_pending (EV_A_ (W)w);
2966 if (expect_false (!ev_is_active (w))) 4274 if (expect_false (!ev_is_active (w)))
2967 return; 4275 return;
2968 4276
… …
2980 4288
2981 EV_FREQUENT_CHECK; 4289 EV_FREQUENT_CHECK;
2982} 4290}
2983#endif 4291#endif
2984 4292
4293#if EV_PREPARE_ENABLE
2985void 4294void
2986ev_prepare_start (EV_P_ ev_prepare *w) 4295ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2987{ 4296{
2988 if (expect_false (ev_is_active (w))) 4297 if (expect_false (ev_is_active (w)))
2989 return; 4298 return;
2990 4299
2991 EV_FREQUENT_CHECK; 4300 EV_FREQUENT_CHECK;
… …
2996 4305
2997 EV_FREQUENT_CHECK; 4306 EV_FREQUENT_CHECK;
2998} 4307}
2999 4308
3000void 4309void
3001ev_prepare_stop (EV_P_ ev_prepare *w) 4310ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3002{ 4311{
3003 clear_pending (EV_A_ (W)w); 4312 clear_pending (EV_A_ (W)w);
3004 if (expect_false (!ev_is_active (w))) 4313 if (expect_false (!ev_is_active (w)))
3005 return; 4314 return;
3006 4315
… …
3015 4324
3016 ev_stop (EV_A_ (W)w); 4325 ev_stop (EV_A_ (W)w);
3017 4326
3018 EV_FREQUENT_CHECK; 4327 EV_FREQUENT_CHECK;
3019} 4328}
4329#endif
3020 4330
4331#if EV_CHECK_ENABLE
3021void 4332void
3022ev_check_start (EV_P_ ev_check *w) 4333ev_check_start (EV_P_ ev_check *w) EV_THROW
3023{ 4334{
3024 if (expect_false (ev_is_active (w))) 4335 if (expect_false (ev_is_active (w)))
3025 return; 4336 return;
3026 4337
3027 EV_FREQUENT_CHECK; 4338 EV_FREQUENT_CHECK;
… …
3032 4343
3033 EV_FREQUENT_CHECK; 4344 EV_FREQUENT_CHECK;
3034} 4345}
3035 4346
3036void 4347void
3037ev_check_stop (EV_P_ ev_check *w) 4348ev_check_stop (EV_P_ ev_check *w) EV_THROW
3038{ 4349{
3039 clear_pending (EV_A_ (W)w); 4350 clear_pending (EV_A_ (W)w);
3040 if (expect_false (!ev_is_active (w))) 4351 if (expect_false (!ev_is_active (w)))
3041 return; 4352 return;
3042 4353
… …
3051 4362
3052 ev_stop (EV_A_ (W)w); 4363 ev_stop (EV_A_ (W)w);
3053 4364
3054 EV_FREQUENT_CHECK; 4365 EV_FREQUENT_CHECK;
3055} 4366}
4367#endif
3056 4368
3057#if EV_EMBED_ENABLE 4369#if EV_EMBED_ENABLE
3058void noinline 4370void noinline
3059ev_embed_sweep (EV_P_ ev_embed *w) 4371ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3060{ 4372{
3061 ev_loop (w->other, EVLOOP_NONBLOCK); 4373 ev_run (w->other, EVRUN_NOWAIT);
3062} 4374}
3063 4375
3064static void 4376static void
3065embed_io_cb (EV_P_ ev_io *io, int revents) 4377embed_io_cb (EV_P_ ev_io *io, int revents)
3066{ 4378{
3067 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4379 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3068 4380
3069 if (ev_cb (w)) 4381 if (ev_cb (w))
3070 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4382 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3071 else 4383 else
3072 ev_loop (w->other, EVLOOP_NONBLOCK); 4384 ev_run (w->other, EVRUN_NOWAIT);
3073} 4385}
3074 4386
3075static void 4387static void
3076embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4388embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3077{ 4389{
3078 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4390 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3079 4391
3080 { 4392 {
3081 struct ev_loop *loop = w->other; 4393 EV_P = w->other;
3082 4394
3083 while (fdchangecnt) 4395 while (fdchangecnt)
3084 { 4396 {
3085 fd_reify (EV_A); 4397 fd_reify (EV_A);
3086 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4398 ev_run (EV_A_ EVRUN_NOWAIT);
3087 } 4399 }
3088 } 4400 }
3089} 4401}
3090 4402
3091static void 4403static void
… …
3094 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4406 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3095 4407
3096 ev_embed_stop (EV_A_ w); 4408 ev_embed_stop (EV_A_ w);
3097 4409
3098 { 4410 {
3099 struct ev_loop *loop = w->other; 4411 EV_P = w->other;
3100 4412
3101 ev_loop_fork (EV_A); 4413 ev_loop_fork (EV_A);
3102 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4414 ev_run (EV_A_ EVRUN_NOWAIT);
3103 } 4415 }
3104 4416
3105 ev_embed_start (EV_A_ w); 4417 ev_embed_start (EV_A_ w);
3106} 4418}
3107 4419
… …
3112 ev_idle_stop (EV_A_ idle); 4424 ev_idle_stop (EV_A_ idle);
3113} 4425}
3114#endif 4426#endif
3115 4427
3116void 4428void
3117ev_embed_start (EV_P_ ev_embed *w) 4429ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3118{ 4430{
3119 if (expect_false (ev_is_active (w))) 4431 if (expect_false (ev_is_active (w)))
3120 return; 4432 return;
3121 4433
3122 { 4434 {
3123 struct ev_loop *loop = w->other; 4435 EV_P = w->other;
3124 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4436 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3125 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4437 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3126 } 4438 }
3127 4439
3128 EV_FREQUENT_CHECK; 4440 EV_FREQUENT_CHECK;
… …
3143 4455
3144 EV_FREQUENT_CHECK; 4456 EV_FREQUENT_CHECK;
3145} 4457}
3146 4458
3147void 4459void
3148ev_embed_stop (EV_P_ ev_embed *w) 4460ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3149{ 4461{
3150 clear_pending (EV_A_ (W)w); 4462 clear_pending (EV_A_ (W)w);
3151 if (expect_false (!ev_is_active (w))) 4463 if (expect_false (!ev_is_active (w)))
3152 return; 4464 return;
3153 4465
… …
3155 4467
3156 ev_io_stop (EV_A_ &w->io); 4468 ev_io_stop (EV_A_ &w->io);
3157 ev_prepare_stop (EV_A_ &w->prepare); 4469 ev_prepare_stop (EV_A_ &w->prepare);
3158 ev_fork_stop (EV_A_ &w->fork); 4470 ev_fork_stop (EV_A_ &w->fork);
3159 4471
4472 ev_stop (EV_A_ (W)w);
4473
3160 EV_FREQUENT_CHECK; 4474 EV_FREQUENT_CHECK;
3161} 4475}
3162#endif 4476#endif
3163 4477
3164#if EV_FORK_ENABLE 4478#if EV_FORK_ENABLE
3165void 4479void
3166ev_fork_start (EV_P_ ev_fork *w) 4480ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3167{ 4481{
3168 if (expect_false (ev_is_active (w))) 4482 if (expect_false (ev_is_active (w)))
3169 return; 4483 return;
3170 4484
3171 EV_FREQUENT_CHECK; 4485 EV_FREQUENT_CHECK;
… …
3176 4490
3177 EV_FREQUENT_CHECK; 4491 EV_FREQUENT_CHECK;
3178} 4492}
3179 4493
3180void 4494void
3181ev_fork_stop (EV_P_ ev_fork *w) 4495ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3182{ 4496{
3183 clear_pending (EV_A_ (W)w); 4497 clear_pending (EV_A_ (W)w);
3184 if (expect_false (!ev_is_active (w))) 4498 if (expect_false (!ev_is_active (w)))
3185 return; 4499 return;
3186 4500
… …
3197 4511
3198 EV_FREQUENT_CHECK; 4512 EV_FREQUENT_CHECK;
3199} 4513}
3200#endif 4514#endif
3201 4515
4516#if EV_CLEANUP_ENABLE
4517void
4518ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4519{
4520 if (expect_false (ev_is_active (w)))
4521 return;
4522
4523 EV_FREQUENT_CHECK;
4524
4525 ev_start (EV_A_ (W)w, ++cleanupcnt);
4526 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4527 cleanups [cleanupcnt - 1] = w;
4528
4529 /* cleanup watchers should never keep a refcount on the loop */
4530 ev_unref (EV_A);
4531 EV_FREQUENT_CHECK;
4532}
4533
4534void
4535ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4536{
4537 clear_pending (EV_A_ (W)w);
4538 if (expect_false (!ev_is_active (w)))
4539 return;
4540
4541 EV_FREQUENT_CHECK;
4542 ev_ref (EV_A);
4543
4544 {
4545 int active = ev_active (w);
4546
4547 cleanups [active - 1] = cleanups [--cleanupcnt];
4548 ev_active (cleanups [active - 1]) = active;
4549 }
4550
4551 ev_stop (EV_A_ (W)w);
4552
4553 EV_FREQUENT_CHECK;
4554}
4555#endif
4556
3202#if EV_ASYNC_ENABLE 4557#if EV_ASYNC_ENABLE
3203void 4558void
3204ev_async_start (EV_P_ ev_async *w) 4559ev_async_start (EV_P_ ev_async *w) EV_THROW
3205{ 4560{
3206 if (expect_false (ev_is_active (w))) 4561 if (expect_false (ev_is_active (w)))
3207 return; 4562 return;
4563
4564 w->sent = 0;
3208 4565
3209 evpipe_init (EV_A); 4566 evpipe_init (EV_A);
3210 4567
3211 EV_FREQUENT_CHECK; 4568 EV_FREQUENT_CHECK;
3212 4569
… …
3216 4573
3217 EV_FREQUENT_CHECK; 4574 EV_FREQUENT_CHECK;
3218} 4575}
3219 4576
3220void 4577void
3221ev_async_stop (EV_P_ ev_async *w) 4578ev_async_stop (EV_P_ ev_async *w) EV_THROW
3222{ 4579{
3223 clear_pending (EV_A_ (W)w); 4580 clear_pending (EV_A_ (W)w);
3224 if (expect_false (!ev_is_active (w))) 4581 if (expect_false (!ev_is_active (w)))
3225 return; 4582 return;
3226 4583
… …
3237 4594
3238 EV_FREQUENT_CHECK; 4595 EV_FREQUENT_CHECK;
3239} 4596}
3240 4597
3241void 4598void
3242ev_async_send (EV_P_ ev_async *w) 4599ev_async_send (EV_P_ ev_async *w) EV_THROW
3243{ 4600{
3244 w->sent = 1; 4601 w->sent = 1;
3245 evpipe_write (EV_A_ &gotasync); 4602 evpipe_write (EV_A_ &async_pending);
3246} 4603}
3247#endif 4604#endif
3248 4605
3249/*****************************************************************************/ 4606/*****************************************************************************/
3250 4607
… …
3284 4641
3285 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4642 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3286} 4643}
3287 4644
3288void 4645void
3289ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4646ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3290{ 4647{
3291 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4648 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3292 4649
3293 if (expect_false (!once)) 4650 if (expect_false (!once))
3294 { 4651 {
3295 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4652 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3296 return; 4653 return;
3297 } 4654 }
3298 4655
3299 once->cb = cb; 4656 once->cb = cb;
3300 once->arg = arg; 4657 once->arg = arg;
… …
3315} 4672}
3316 4673
3317/*****************************************************************************/ 4674/*****************************************************************************/
3318 4675
3319#if EV_WALK_ENABLE 4676#if EV_WALK_ENABLE
3320void 4677void ecb_cold
3321ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4678ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3322{ 4679{
3323 int i, j; 4680 int i, j;
3324 ev_watcher_list *wl, *wn; 4681 ev_watcher_list *wl, *wn;
3325 4682
3326 if (types & (EV_IO | EV_EMBED)) 4683 if (types & (EV_IO | EV_EMBED))
… …
3369 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4726 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3370#endif 4727#endif
3371 4728
3372#if EV_IDLE_ENABLE 4729#if EV_IDLE_ENABLE
3373 if (types & EV_IDLE) 4730 if (types & EV_IDLE)
3374 for (j = NUMPRI; i--; ) 4731 for (j = NUMPRI; j--; )
3375 for (i = idlecnt [j]; i--; ) 4732 for (i = idlecnt [j]; i--; )
3376 cb (EV_A_ EV_IDLE, idles [j][i]); 4733 cb (EV_A_ EV_IDLE, idles [j][i]);
3377#endif 4734#endif
3378 4735
3379#if EV_FORK_ENABLE 4736#if EV_FORK_ENABLE
… …
3387 if (types & EV_ASYNC) 4744 if (types & EV_ASYNC)
3388 for (i = asynccnt; i--; ) 4745 for (i = asynccnt; i--; )
3389 cb (EV_A_ EV_ASYNC, asyncs [i]); 4746 cb (EV_A_ EV_ASYNC, asyncs [i]);
3390#endif 4747#endif
3391 4748
4749#if EV_PREPARE_ENABLE
3392 if (types & EV_PREPARE) 4750 if (types & EV_PREPARE)
3393 for (i = preparecnt; i--; ) 4751 for (i = preparecnt; i--; )
3394#if EV_EMBED_ENABLE 4752# if EV_EMBED_ENABLE
3395 if (ev_cb (prepares [i]) != embed_prepare_cb) 4753 if (ev_cb (prepares [i]) != embed_prepare_cb)
3396#endif 4754# endif
3397 cb (EV_A_ EV_PREPARE, prepares [i]); 4755 cb (EV_A_ EV_PREPARE, prepares [i]);
4756#endif
3398 4757
4758#if EV_CHECK_ENABLE
3399 if (types & EV_CHECK) 4759 if (types & EV_CHECK)
3400 for (i = checkcnt; i--; ) 4760 for (i = checkcnt; i--; )
3401 cb (EV_A_ EV_CHECK, checks [i]); 4761 cb (EV_A_ EV_CHECK, checks [i]);
4762#endif
3402 4763
4764#if EV_SIGNAL_ENABLE
3403 if (types & EV_SIGNAL) 4765 if (types & EV_SIGNAL)
3404 for (i = 0; i < signalmax; ++i) 4766 for (i = 0; i < EV_NSIG - 1; ++i)
3405 for (wl = signals [i].head; wl; ) 4767 for (wl = signals [i].head; wl; )
3406 { 4768 {
3407 wn = wl->next; 4769 wn = wl->next;
3408 cb (EV_A_ EV_SIGNAL, wl); 4770 cb (EV_A_ EV_SIGNAL, wl);
3409 wl = wn; 4771 wl = wn;
3410 } 4772 }
4773#endif
3411 4774
4775#if EV_CHILD_ENABLE
3412 if (types & EV_CHILD) 4776 if (types & EV_CHILD)
3413 for (i = EV_PID_HASHSIZE; i--; ) 4777 for (i = (EV_PID_HASHSIZE); i--; )
3414 for (wl = childs [i]; wl; ) 4778 for (wl = childs [i]; wl; )
3415 { 4779 {
3416 wn = wl->next; 4780 wn = wl->next;
3417 cb (EV_A_ EV_CHILD, wl); 4781 cb (EV_A_ EV_CHILD, wl);
3418 wl = wn; 4782 wl = wn;
3419 } 4783 }
4784#endif
3420/* EV_STAT 0x00001000 /* stat data changed */ 4785/* EV_STAT 0x00001000 /* stat data changed */
3421/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4786/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3422} 4787}
3423#endif 4788#endif
3424 4789
3425#if EV_MULTIPLICITY 4790#if EV_MULTIPLICITY
3426 #include "ev_wrap.h" 4791 #include "ev_wrap.h"
3427#endif 4792#endif
3428 4793
3429#ifdef __cplusplus
3430}
3431#endif
3432

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