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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 1.435 by root, Sat May 26 08:52:09 2012 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
287#endif 360#endif
288 361
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 362/* 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. */ 363/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 364#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h> 365# include <sys/syscall.h>
293# ifdef SYS_clock_gettime 366# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1 369# define EV_USE_MONOTONIC 1
297# else 370# else
… …
300# endif 373# endif
301#endif 374#endif
302 375
303/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 376/* this block fixes any misconfiguration where we know we run into trouble otherwise */
304 377
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
383
305#ifndef CLOCK_MONOTONIC 384#ifndef CLOCK_MONOTONIC
306# undef EV_USE_MONOTONIC 385# undef EV_USE_MONOTONIC
307# define EV_USE_MONOTONIC 0 386# define EV_USE_MONOTONIC 0
308#endif 387#endif
309 388
… …
316# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
318#endif 397#endif
319 398
320#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
322# include <sys/select.h> 402# include <sys/select.h>
323# endif 403# endif
324#endif 404#endif
325 405
326#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 407# include <sys/statfs.h>
329# include <sys/inotify.h> 408# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 409/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
334# endif 413# endif
335#endif 414#endif
336 415
337#if EV_SELECT_IS_WINSOCKET
338# include <winsock.h>
339#endif
340
341#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h> 418# include <stdint.h>
344# ifdef __cplusplus 419# ifndef EFD_NONBLOCK
345extern "C" { 420# define EFD_NONBLOCK O_NONBLOCK
346# endif 421# endif
347int eventfd (unsigned int initval, int flags); 422# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 423# ifdef O_CLOEXEC
349} 424# define EFD_CLOEXEC O_CLOEXEC
425# else
426# define EFD_CLOEXEC 02000000
427# endif
350# endif 428# endif
429EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
430#endif
431
432#if EV_USE_SIGNALFD
433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
434# include <stdint.h>
435# ifndef SFD_NONBLOCK
436# define SFD_NONBLOCK O_NONBLOCK
437# endif
438# ifndef SFD_CLOEXEC
439# ifdef O_CLOEXEC
440# define SFD_CLOEXEC O_CLOEXEC
441# else
442# define SFD_CLOEXEC 02000000
443# endif
444# endif
445EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
446
447struct signalfd_siginfo
448{
449 uint32_t ssi_signo;
450 char pad[128 - sizeof (uint32_t)];
451};
351#endif 452#endif
352 453
353/**/ 454/**/
354 455
355#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 458#else
358# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
359#endif 460#endif
360 461
361/* 462/*
362 * This is used to avoid floating point rounding problems. 463 * 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. 464 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 465 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 466#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
467/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
370 468
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 469#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) */ 470#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 */
374 471
472#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
473#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
474
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */
477/*
478 * libecb - http://software.schmorp.de/pkg/libecb
479 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved.
483 *
484 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met:
486 *
487 * 1. Redistributions of source code must retain the above copyright notice,
488 * this list of conditions and the following disclaimer.
489 *
490 * 2. Redistributions in binary form must reproduce the above copyright
491 * notice, this list of conditions and the following disclaimer in the
492 * documentation and/or other materials provided with the distribution.
493 *
494 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
495 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
496 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
497 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
498 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE.
504 */
505
506#ifndef ECB_H
507#define ECB_H
508
509#ifdef _WIN32
510 typedef signed char int8_t;
511 typedef unsigned char uint8_t;
512 typedef signed short int16_t;
513 typedef unsigned short uint16_t;
514 typedef signed int int32_t;
515 typedef unsigned int uint32_t;
375#if __GNUC__ >= 4 516 #if __GNUC__
376# define expect(expr,value) __builtin_expect ((expr),(value)) 517 typedef signed long long int64_t;
377# define noinline __attribute__ ((noinline)) 518 typedef unsigned long long uint64_t;
519 #else /* _MSC_VER || __BORLANDC__ */
520 typedef signed __int64 int64_t;
521 typedef unsigned __int64 uint64_t;
522 #endif
378#else 523#else
379# define expect(expr,value) (expr) 524 #include <inttypes.h>
380# define noinline
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
382# define inline
383# endif 525#endif
526
527/* many compilers define _GNUC_ to some versions but then only implement
528 * what their idiot authors think are the "more important" extensions,
529 * causing enormous grief in return for some better fake benchmark numbers.
530 * or so.
531 * we try to detect these and simply assume they are not gcc - if they have
532 * an issue with that they should have done it right in the first place.
533 */
534#ifndef ECB_GCC_VERSION
535 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
536 #define ECB_GCC_VERSION(major,minor) 0
537 #else
538 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
384#endif 539 #endif
540#endif
385 541
542/*****************************************************************************/
543
544/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
545/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
546
547#if ECB_NO_THREADS
548# define ECB_NO_SMP 1
549#endif
550
551#if ECB_NO_THREADS || ECB_NO_SMP
552 #define ECB_MEMORY_FENCE do { } while (0)
553#endif
554
555#ifndef ECB_MEMORY_FENCE
556 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
557 #if __i386 || __i386__
558 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
559 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
560 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
561 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
565 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
566 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
567 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
568 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
570 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
571 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
573 #elif __sparc || __sparc__
574 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
575 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
576 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
577 #elif defined __s390__ || defined __s390x__
578 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
579 #elif defined __mips__
580 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
581 #elif defined __alpha__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
583 #endif
584 #endif
585#endif
586
587#ifndef ECB_MEMORY_FENCE
588 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
589 #define ECB_MEMORY_FENCE __sync_synchronize ()
590 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
591 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
592 #elif _MSC_VER >= 1400 /* VC++ 2005 */
593 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
594 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
595 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
596 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
597 #elif defined _WIN32
598 #include <WinNT.h>
599 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
600 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
601 #include <mbarrier.h>
602 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
603 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
604 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
605 #elif __xlC__
606 #define ECB_MEMORY_FENCE __sync ()
607 #endif
608#endif
609
610#ifndef ECB_MEMORY_FENCE
611 #if !ECB_AVOID_PTHREADS
612 /*
613 * if you get undefined symbol references to pthread_mutex_lock,
614 * or failure to find pthread.h, then you should implement
615 * the ECB_MEMORY_FENCE operations for your cpu/compiler
616 * OR provide pthread.h and link against the posix thread library
617 * of your system.
618 */
619 #include <pthread.h>
620 #define ECB_NEEDS_PTHREADS 1
621 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
622
623 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
624 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
625 #endif
626#endif
627
628#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
629 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
630#endif
631
632#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
633 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
634#endif
635
636/*****************************************************************************/
637
638#define ECB_C99 (__STDC_VERSION__ >= 199901L)
639
640#if __cplusplus
641 #define ecb_inline static inline
642#elif ECB_GCC_VERSION(2,5)
643 #define ecb_inline static __inline__
644#elif ECB_C99
645 #define ecb_inline static inline
646#else
647 #define ecb_inline static
648#endif
649
650#if ECB_GCC_VERSION(3,3)
651 #define ecb_restrict __restrict__
652#elif ECB_C99
653 #define ecb_restrict restrict
654#else
655 #define ecb_restrict
656#endif
657
658typedef int ecb_bool;
659
660#define ECB_CONCAT_(a, b) a ## b
661#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
662#define ECB_STRINGIFY_(a) # a
663#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
664
665#define ecb_function_ ecb_inline
666
667#if ECB_GCC_VERSION(3,1)
668 #define ecb_attribute(attrlist) __attribute__(attrlist)
669 #define ecb_is_constant(expr) __builtin_constant_p (expr)
670 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
671 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
672#else
673 #define ecb_attribute(attrlist)
674 #define ecb_is_constant(expr) 0
675 #define ecb_expect(expr,value) (expr)
676 #define ecb_prefetch(addr,rw,locality)
677#endif
678
679/* no emulation for ecb_decltype */
680#if ECB_GCC_VERSION(4,5)
681 #define ecb_decltype(x) __decltype(x)
682#elif ECB_GCC_VERSION(3,0)
683 #define ecb_decltype(x) __typeof(x)
684#endif
685
686#define ecb_noinline ecb_attribute ((__noinline__))
687#define ecb_noreturn ecb_attribute ((__noreturn__))
688#define ecb_unused ecb_attribute ((__unused__))
689#define ecb_const ecb_attribute ((__const__))
690#define ecb_pure ecb_attribute ((__pure__))
691
692#if ECB_GCC_VERSION(4,3)
693 #define ecb_artificial ecb_attribute ((__artificial__))
694 #define ecb_hot ecb_attribute ((__hot__))
695 #define ecb_cold ecb_attribute ((__cold__))
696#else
697 #define ecb_artificial
698 #define ecb_hot
699 #define ecb_cold
700#endif
701
702/* put around conditional expressions if you are very sure that the */
703/* expression is mostly true or mostly false. note that these return */
704/* booleans, not the expression. */
386#define expect_false(expr) expect ((expr) != 0, 0) 705#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 706#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
707/* for compatibility to the rest of the world */
708#define ecb_likely(expr) ecb_expect_true (expr)
709#define ecb_unlikely(expr) ecb_expect_false (expr)
710
711/* count trailing zero bits and count # of one bits */
712#if ECB_GCC_VERSION(3,4)
713 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
714 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
715 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
716 #define ecb_ctz32(x) __builtin_ctz (x)
717 #define ecb_ctz64(x) __builtin_ctzll (x)
718 #define ecb_popcount32(x) __builtin_popcount (x)
719 /* no popcountll */
720#else
721 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
722 ecb_function_ int
723 ecb_ctz32 (uint32_t x)
724 {
725 int r = 0;
726
727 x &= ~x + 1; /* this isolates the lowest bit */
728
729#if ECB_branchless_on_i386
730 r += !!(x & 0xaaaaaaaa) << 0;
731 r += !!(x & 0xcccccccc) << 1;
732 r += !!(x & 0xf0f0f0f0) << 2;
733 r += !!(x & 0xff00ff00) << 3;
734 r += !!(x & 0xffff0000) << 4;
735#else
736 if (x & 0xaaaaaaaa) r += 1;
737 if (x & 0xcccccccc) r += 2;
738 if (x & 0xf0f0f0f0) r += 4;
739 if (x & 0xff00ff00) r += 8;
740 if (x & 0xffff0000) r += 16;
741#endif
742
743 return r;
744 }
745
746 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
747 ecb_function_ int
748 ecb_ctz64 (uint64_t x)
749 {
750 int shift = x & 0xffffffffU ? 0 : 32;
751 return ecb_ctz32 (x >> shift) + shift;
752 }
753
754 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
755 ecb_function_ int
756 ecb_popcount32 (uint32_t x)
757 {
758 x -= (x >> 1) & 0x55555555;
759 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
760 x = ((x >> 4) + x) & 0x0f0f0f0f;
761 x *= 0x01010101;
762
763 return x >> 24;
764 }
765
766 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
767 ecb_function_ int ecb_ld32 (uint32_t x)
768 {
769 int r = 0;
770
771 if (x >> 16) { x >>= 16; r += 16; }
772 if (x >> 8) { x >>= 8; r += 8; }
773 if (x >> 4) { x >>= 4; r += 4; }
774 if (x >> 2) { x >>= 2; r += 2; }
775 if (x >> 1) { r += 1; }
776
777 return r;
778 }
779
780 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
781 ecb_function_ int ecb_ld64 (uint64_t x)
782 {
783 int r = 0;
784
785 if (x >> 32) { x >>= 32; r += 32; }
786
787 return r + ecb_ld32 (x);
788 }
789#endif
790
791ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
792ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
793{
794 return ( (x * 0x0802U & 0x22110U)
795 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
796}
797
798ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
799ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
800{
801 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
802 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
803 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
804 x = ( x >> 8 ) | ( x << 8);
805
806 return x;
807}
808
809ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
810ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
811{
812 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
813 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
814 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
815 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
816 x = ( x >> 16 ) | ( x << 16);
817
818 return x;
819}
820
821/* popcount64 is only available on 64 bit cpus as gcc builtin */
822/* so for this version we are lazy */
823ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
824ecb_function_ int
825ecb_popcount64 (uint64_t x)
826{
827 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
828}
829
830ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
831ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
832ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
833ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
834ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
835ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
836ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
837ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
838
839ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
840ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
841ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
842ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
843ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
844ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
845ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
846ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
847
848#if ECB_GCC_VERSION(4,3)
849 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
850 #define ecb_bswap32(x) __builtin_bswap32 (x)
851 #define ecb_bswap64(x) __builtin_bswap64 (x)
852#else
853 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
854 ecb_function_ uint16_t
855 ecb_bswap16 (uint16_t x)
856 {
857 return ecb_rotl16 (x, 8);
858 }
859
860 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
861 ecb_function_ uint32_t
862 ecb_bswap32 (uint32_t x)
863 {
864 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
865 }
866
867 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
868 ecb_function_ uint64_t
869 ecb_bswap64 (uint64_t x)
870 {
871 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
872 }
873#endif
874
875#if ECB_GCC_VERSION(4,5)
876 #define ecb_unreachable() __builtin_unreachable ()
877#else
878 /* this seems to work fine, but gcc always emits a warning for it :/ */
879 ecb_inline void ecb_unreachable (void) ecb_noreturn;
880 ecb_inline void ecb_unreachable (void) { }
881#endif
882
883/* try to tell the compiler that some condition is definitely true */
884#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
885
886ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
887ecb_inline unsigned char
888ecb_byteorder_helper (void)
889{
890 const uint32_t u = 0x11223344;
891 return *(unsigned char *)&u;
892}
893
894ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
895ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
896ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
897ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
898
899#if ECB_GCC_VERSION(3,0) || ECB_C99
900 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
901#else
902 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
903#endif
904
905#if __cplusplus
906 template<typename T>
907 static inline T ecb_div_rd (T val, T div)
908 {
909 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
910 }
911 template<typename T>
912 static inline T ecb_div_ru (T val, T div)
913 {
914 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
915 }
916#else
917 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
918 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
919#endif
920
921#if ecb_cplusplus_does_not_suck
922 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
923 template<typename T, int N>
924 static inline int ecb_array_length (const T (&arr)[N])
925 {
926 return N;
927 }
928#else
929 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
930#endif
931
932#endif
933
934/* ECB.H END */
935
936#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
937/* if your architecture doesn't need memory fences, e.g. because it is
938 * single-cpu/core, or if you use libev in a project that doesn't use libev
939 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
940 * libev, in which cases the memory fences become nops.
941 * alternatively, you can remove this #error and link against libpthread,
942 * which will then provide the memory fences.
943 */
944# error "memory fences not defined for your architecture, please report"
945#endif
946
947#ifndef ECB_MEMORY_FENCE
948# define ECB_MEMORY_FENCE do { } while (0)
949# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
950# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
951#endif
952
953#define expect_false(cond) ecb_expect_false (cond)
954#define expect_true(cond) ecb_expect_true (cond)
955#define noinline ecb_noinline
956
388#define inline_size static inline 957#define inline_size ecb_inline
389 958
390#if EV_MINIMAL 959#if EV_FEATURE_CODE
960# define inline_speed ecb_inline
961#else
391# define inline_speed static noinline 962# define inline_speed static noinline
392#else
393# define inline_speed static inline
394#endif 963#endif
395 964
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 965#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 966
398#if EV_MINPRI == EV_MAXPRI 967#if EV_MINPRI == EV_MAXPRI
… …
411#define ev_active(w) ((W)(w))->active 980#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 981#define ev_at(w) ((WT)(w))->at
413 982
414#if EV_USE_REALTIME 983#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 984/* 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 */ 985/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 986static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 987#endif
419 988
420#if EV_USE_MONOTONIC 989#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 990static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 991#endif
423 992
993#ifndef EV_FD_TO_WIN32_HANDLE
994# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
995#endif
996#ifndef EV_WIN32_HANDLE_TO_FD
997# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
998#endif
999#ifndef EV_WIN32_CLOSE_FD
1000# define EV_WIN32_CLOSE_FD(fd) close (fd)
1001#endif
1002
424#ifdef _WIN32 1003#ifdef _WIN32
425# include "ev_win32.c" 1004# include "ev_win32.c"
426#endif 1005#endif
427 1006
428/*****************************************************************************/ 1007/*****************************************************************************/
429 1008
1009/* define a suitable floor function (only used by periodics atm) */
1010
1011#if EV_USE_FLOOR
1012# include <math.h>
1013# define ev_floor(v) floor (v)
1014#else
1015
1016#include <float.h>
1017
1018/* a floor() replacement function, should be independent of ev_tstamp type */
1019static ev_tstamp noinline
1020ev_floor (ev_tstamp v)
1021{
1022 /* the choice of shift factor is not terribly important */
1023#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1024 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1025#else
1026 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1027#endif
1028
1029 /* argument too large for an unsigned long? */
1030 if (expect_false (v >= shift))
1031 {
1032 ev_tstamp f;
1033
1034 if (v == v - 1.)
1035 return v; /* very large number */
1036
1037 f = shift * ev_floor (v * (1. / shift));
1038 return f + ev_floor (v - f);
1039 }
1040
1041 /* special treatment for negative args? */
1042 if (expect_false (v < 0.))
1043 {
1044 ev_tstamp f = -ev_floor (-v);
1045
1046 return f - (f == v ? 0 : 1);
1047 }
1048
1049 /* fits into an unsigned long */
1050 return (unsigned long)v;
1051}
1052
1053#endif
1054
1055/*****************************************************************************/
1056
1057#ifdef __linux
1058# include <sys/utsname.h>
1059#endif
1060
1061static unsigned int noinline ecb_cold
1062ev_linux_version (void)
1063{
1064#ifdef __linux
1065 unsigned int v = 0;
1066 struct utsname buf;
1067 int i;
1068 char *p = buf.release;
1069
1070 if (uname (&buf))
1071 return 0;
1072
1073 for (i = 3+1; --i; )
1074 {
1075 unsigned int c = 0;
1076
1077 for (;;)
1078 {
1079 if (*p >= '0' && *p <= '9')
1080 c = c * 10 + *p++ - '0';
1081 else
1082 {
1083 p += *p == '.';
1084 break;
1085 }
1086 }
1087
1088 v = (v << 8) | c;
1089 }
1090
1091 return v;
1092#else
1093 return 0;
1094#endif
1095}
1096
1097/*****************************************************************************/
1098
1099#if EV_AVOID_STDIO
1100static void noinline ecb_cold
1101ev_printerr (const char *msg)
1102{
1103 write (STDERR_FILENO, msg, strlen (msg));
1104}
1105#endif
1106
430static void (*syserr_cb)(const char *msg); 1107static void (*syserr_cb)(const char *msg) EV_THROW;
431 1108
432void 1109void ecb_cold
433ev_set_syserr_cb (void (*cb)(const char *msg)) 1110ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
434{ 1111{
435 syserr_cb = cb; 1112 syserr_cb = cb;
436} 1113}
437 1114
438static void noinline 1115static void noinline ecb_cold
439ev_syserr (const char *msg) 1116ev_syserr (const char *msg)
440{ 1117{
441 if (!msg) 1118 if (!msg)
442 msg = "(libev) system error"; 1119 msg = "(libev) system error";
443 1120
444 if (syserr_cb) 1121 if (syserr_cb)
445 syserr_cb (msg); 1122 syserr_cb (msg);
446 else 1123 else
447 { 1124 {
1125#if EV_AVOID_STDIO
1126 ev_printerr (msg);
1127 ev_printerr (": ");
1128 ev_printerr (strerror (errno));
1129 ev_printerr ("\n");
1130#else
448 perror (msg); 1131 perror (msg);
1132#endif
449 abort (); 1133 abort ();
450 } 1134 }
451} 1135}
452 1136
453static void * 1137static void *
454ev_realloc_emul (void *ptr, long size) 1138ev_realloc_emul (void *ptr, long size) EV_THROW
455{ 1139{
1140#if __GLIBC__
1141 return realloc (ptr, size);
1142#else
456 /* some systems, notably openbsd and darwin, fail to properly 1143 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and 1144 * implement realloc (x, 0) (as required by both ansi c-89 and
458 * the single unix specification, so work around them here. 1145 * the single unix specification, so work around them here.
459 */ 1146 */
460 1147
461 if (size) 1148 if (size)
462 return realloc (ptr, size); 1149 return realloc (ptr, size);
463 1150
464 free (ptr); 1151 free (ptr);
465 return 0; 1152 return 0;
1153#endif
466} 1154}
467 1155
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1156static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
469 1157
470void 1158void ecb_cold
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 1159ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
472{ 1160{
473 alloc = cb; 1161 alloc = cb;
474} 1162}
475 1163
476inline_speed void * 1164inline_speed void *
… …
478{ 1166{
479 ptr = alloc (ptr, size); 1167 ptr = alloc (ptr, size);
480 1168
481 if (!ptr && size) 1169 if (!ptr && size)
482 { 1170 {
1171#if EV_AVOID_STDIO
1172 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1173#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1174 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1175#endif
484 abort (); 1176 abort ();
485 } 1177 }
486 1178
487 return ptr; 1179 return ptr;
488} 1180}
… …
490#define ev_malloc(size) ev_realloc (0, (size)) 1182#define ev_malloc(size) ev_realloc (0, (size))
491#define ev_free(ptr) ev_realloc ((ptr), 0) 1183#define ev_free(ptr) ev_realloc ((ptr), 0)
492 1184
493/*****************************************************************************/ 1185/*****************************************************************************/
494 1186
1187/* set in reify when reification needed */
1188#define EV_ANFD_REIFY 1
1189
495/* file descriptor info structure */ 1190/* file descriptor info structure */
496typedef struct 1191typedef struct
497{ 1192{
498 WL head; 1193 WL head;
499 unsigned char events; /* the events watched for */ 1194 unsigned char events; /* the events watched for */
500 unsigned char reify; /* flag set when this ANFD needs reification */ 1195 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 */ 1196 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
502 unsigned char unused; 1197 unsigned char unused;
503#if EV_USE_EPOLL 1198#if EV_USE_EPOLL
504 unsigned int egen; /* generation counter to counter epoll bugs */ 1199 unsigned int egen; /* generation counter to counter epoll bugs */
505#endif 1200#endif
506#if EV_SELECT_IS_WINSOCKET 1201#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
507 SOCKET handle; 1202 SOCKET handle;
1203#endif
1204#if EV_USE_IOCP
1205 OVERLAPPED or, ow;
508#endif 1206#endif
509} ANFD; 1207} ANFD;
510 1208
511/* stores the pending event set for a given watcher */ 1209/* stores the pending event set for a given watcher */
512typedef struct 1210typedef struct
… …
554 #undef VAR 1252 #undef VAR
555 }; 1253 };
556 #include "ev_wrap.h" 1254 #include "ev_wrap.h"
557 1255
558 static struct ev_loop default_loop_struct; 1256 static struct ev_loop default_loop_struct;
559 struct ev_loop *ev_default_loop_ptr; 1257 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
560 1258
561#else 1259#else
562 1260
563 ev_tstamp ev_rt_now; 1261 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; 1262 #define VAR(name,decl) static decl;
565 #include "ev_vars.h" 1263 #include "ev_vars.h"
566 #undef VAR 1264 #undef VAR
567 1265
568 static int ev_default_loop_ptr; 1266 static int ev_default_loop_ptr;
569 1267
570#endif 1268#endif
571 1269
572#if EV_MINIMAL < 2 1270#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) 1271# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1272# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
575# define EV_INVOKE_PENDING invoke_cb (EV_A) 1273# define EV_INVOKE_PENDING invoke_cb (EV_A)
576#else 1274#else
577# define EV_SUSPEND_CB (void)0
578# define EV_RESUME_CB (void)0 1275# define EV_RELEASE_CB (void)0
1276# define EV_ACQUIRE_CB (void)0
579# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1277# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
580#endif 1278#endif
1279
1280#define EVBREAK_RECURSE 0x80
581 1281
582/*****************************************************************************/ 1282/*****************************************************************************/
583 1283
584#ifndef EV_HAVE_EV_TIME 1284#ifndef EV_HAVE_EV_TIME
585ev_tstamp 1285ev_tstamp
586ev_time (void) 1286ev_time (void) EV_THROW
587{ 1287{
588#if EV_USE_REALTIME 1288#if EV_USE_REALTIME
589 if (expect_true (have_realtime)) 1289 if (expect_true (have_realtime))
590 { 1290 {
591 struct timespec ts; 1291 struct timespec ts;
… …
615 return ev_time (); 1315 return ev_time ();
616} 1316}
617 1317
618#if EV_MULTIPLICITY 1318#if EV_MULTIPLICITY
619ev_tstamp 1319ev_tstamp
620ev_now (EV_P) 1320ev_now (EV_P) EV_THROW
621{ 1321{
622 return ev_rt_now; 1322 return ev_rt_now;
623} 1323}
624#endif 1324#endif
625 1325
626void 1326void
627ev_sleep (ev_tstamp delay) 1327ev_sleep (ev_tstamp delay) EV_THROW
628{ 1328{
629 if (delay > 0.) 1329 if (delay > 0.)
630 { 1330 {
631#if EV_USE_NANOSLEEP 1331#if EV_USE_NANOSLEEP
632 struct timespec ts; 1332 struct timespec ts;
633 1333
634 ts.tv_sec = (time_t)delay; 1334 EV_TS_SET (ts, delay);
635 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
636
637 nanosleep (&ts, 0); 1335 nanosleep (&ts, 0);
638#elif defined(_WIN32) 1336#elif defined _WIN32
639 Sleep ((unsigned long)(delay * 1e3)); 1337 Sleep ((unsigned long)(delay * 1e3));
640#else 1338#else
641 struct timeval tv; 1339 struct timeval tv;
642 1340
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 */ 1341 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
647 /* somehting not guaranteed by newer posix versions, but guaranteed */ 1342 /* something not guaranteed by newer posix versions, but guaranteed */
648 /* by older ones */ 1343 /* by older ones */
1344 EV_TV_SET (tv, delay);
649 select (0, 0, 0, 0, &tv); 1345 select (0, 0, 0, 0, &tv);
650#endif 1346#endif
651 } 1347 }
652} 1348}
653 1349
654/*****************************************************************************/ 1350/*****************************************************************************/
655 1351
656#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1352#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
657 1353
658/* find a suitable new size for the given array, */ 1354/* find a suitable new size for the given array, */
659/* hopefully by rounding to a ncie-to-malloc size */ 1355/* hopefully by rounding to a nice-to-malloc size */
660inline_size int 1356inline_size int
661array_nextsize (int elem, int cur, int cnt) 1357array_nextsize (int elem, int cur, int cnt)
662{ 1358{
663 int ncur = cur + 1; 1359 int ncur = cur + 1;
664 1360
665 do 1361 do
666 ncur <<= 1; 1362 ncur <<= 1;
667 while (cnt > ncur); 1363 while (cnt > ncur);
668 1364
669 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1365 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
670 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1366 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
671 { 1367 {
672 ncur *= elem; 1368 ncur *= elem;
673 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1369 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
674 ncur = ncur - sizeof (void *) * 4; 1370 ncur = ncur - sizeof (void *) * 4;
… …
676 } 1372 }
677 1373
678 return ncur; 1374 return ncur;
679} 1375}
680 1376
681static noinline void * 1377static void * noinline ecb_cold
682array_realloc (int elem, void *base, int *cur, int cnt) 1378array_realloc (int elem, void *base, int *cur, int cnt)
683{ 1379{
684 *cur = array_nextsize (elem, *cur, cnt); 1380 *cur = array_nextsize (elem, *cur, cnt);
685 return ev_realloc (base, elem * *cur); 1381 return ev_realloc (base, elem * *cur);
686} 1382}
… …
689 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1385 memset ((void *)(base), 0, sizeof (*(base)) * (count))
690 1386
691#define array_needsize(type,base,cur,cnt,init) \ 1387#define array_needsize(type,base,cur,cnt,init) \
692 if (expect_false ((cnt) > (cur))) \ 1388 if (expect_false ((cnt) > (cur))) \
693 { \ 1389 { \
694 int ocur_ = (cur); \ 1390 int ecb_unused ocur_ = (cur); \
695 (base) = (type *)array_realloc \ 1391 (base) = (type *)array_realloc \
696 (sizeof (type), (base), &(cur), (cnt)); \ 1392 (sizeof (type), (base), &(cur), (cnt)); \
697 init ((base) + (ocur_), (cur) - ocur_); \ 1393 init ((base) + (ocur_), (cur) - ocur_); \
698 } 1394 }
699 1395
… …
717pendingcb (EV_P_ ev_prepare *w, int revents) 1413pendingcb (EV_P_ ev_prepare *w, int revents)
718{ 1414{
719} 1415}
720 1416
721void noinline 1417void noinline
722ev_feed_event (EV_P_ void *w, int revents) 1418ev_feed_event (EV_P_ void *w, int revents) EV_THROW
723{ 1419{
724 W w_ = (W)w; 1420 W w_ = (W)w;
725 int pri = ABSPRI (w_); 1421 int pri = ABSPRI (w_);
726 1422
727 if (expect_false (w_->pending)) 1423 if (expect_false (w_->pending))
… …
731 w_->pending = ++pendingcnt [pri]; 1427 w_->pending = ++pendingcnt [pri];
732 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1428 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
733 pendings [pri][w_->pending - 1].w = w_; 1429 pendings [pri][w_->pending - 1].w = w_;
734 pendings [pri][w_->pending - 1].events = revents; 1430 pendings [pri][w_->pending - 1].events = revents;
735 } 1431 }
1432
1433 pendingpri = NUMPRI - 1;
736} 1434}
737 1435
738inline_speed void 1436inline_speed void
739feed_reverse (EV_P_ W w) 1437feed_reverse (EV_P_ W w)
740{ 1438{
… …
760} 1458}
761 1459
762/*****************************************************************************/ 1460/*****************************************************************************/
763 1461
764inline_speed void 1462inline_speed void
765fd_event (EV_P_ int fd, int revents) 1463fd_event_nocheck (EV_P_ int fd, int revents)
766{ 1464{
767 ANFD *anfd = anfds + fd; 1465 ANFD *anfd = anfds + fd;
768 ev_io *w; 1466 ev_io *w;
769 1467
770 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1468 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
774 if (ev) 1472 if (ev)
775 ev_feed_event (EV_A_ (W)w, ev); 1473 ev_feed_event (EV_A_ (W)w, ev);
776 } 1474 }
777} 1475}
778 1476
1477/* do not submit kernel events for fds that have reify set */
1478/* because that means they changed while we were polling for new events */
1479inline_speed void
1480fd_event (EV_P_ int fd, int revents)
1481{
1482 ANFD *anfd = anfds + fd;
1483
1484 if (expect_true (!anfd->reify))
1485 fd_event_nocheck (EV_A_ fd, revents);
1486}
1487
779void 1488void
780ev_feed_fd_event (EV_P_ int fd, int revents) 1489ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
781{ 1490{
782 if (fd >= 0 && fd < anfdmax) 1491 if (fd >= 0 && fd < anfdmax)
783 fd_event (EV_A_ fd, revents); 1492 fd_event_nocheck (EV_A_ fd, revents);
784} 1493}
785 1494
786/* make sure the external fd watch events are in-sync */ 1495/* make sure the external fd watch events are in-sync */
787/* with the kernel/libev internal state */ 1496/* with the kernel/libev internal state */
788inline_size void 1497inline_size void
789fd_reify (EV_P) 1498fd_reify (EV_P)
790{ 1499{
791 int i; 1500 int i;
792 1501
1502#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1503 for (i = 0; i < fdchangecnt; ++i)
1504 {
1505 int fd = fdchanges [i];
1506 ANFD *anfd = anfds + fd;
1507
1508 if (anfd->reify & EV__IOFDSET && anfd->head)
1509 {
1510 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1511
1512 if (handle != anfd->handle)
1513 {
1514 unsigned long arg;
1515
1516 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1517
1518 /* handle changed, but fd didn't - we need to do it in two steps */
1519 backend_modify (EV_A_ fd, anfd->events, 0);
1520 anfd->events = 0;
1521 anfd->handle = handle;
1522 }
1523 }
1524 }
1525#endif
1526
793 for (i = 0; i < fdchangecnt; ++i) 1527 for (i = 0; i < fdchangecnt; ++i)
794 { 1528 {
795 int fd = fdchanges [i]; 1529 int fd = fdchanges [i];
796 ANFD *anfd = anfds + fd; 1530 ANFD *anfd = anfds + fd;
797 ev_io *w; 1531 ev_io *w;
798 1532
799 unsigned char events = 0; 1533 unsigned char o_events = anfd->events;
1534 unsigned char o_reify = anfd->reify;
800 1535
801 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1536 anfd->reify = 0;
802 events |= (unsigned char)w->events;
803 1537
804#if EV_SELECT_IS_WINSOCKET 1538 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
805 if (events)
806 { 1539 {
807 unsigned long arg; 1540 anfd->events = 0;
808 #ifdef EV_FD_TO_WIN32_HANDLE 1541
809 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1542 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
810 #else 1543 anfd->events |= (unsigned char)w->events;
811 anfd->handle = _get_osfhandle (fd); 1544
812 #endif 1545 if (o_events != anfd->events)
813 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1546 o_reify = EV__IOFDSET; /* actually |= */
814 } 1547 }
815#endif
816 1548
817 { 1549 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); 1550 backend_modify (EV_A_ fd, o_events, anfd->events);
826 }
827 } 1551 }
828 1552
829 fdchangecnt = 0; 1553 fdchangecnt = 0;
830} 1554}
831 1555
… …
843 fdchanges [fdchangecnt - 1] = fd; 1567 fdchanges [fdchangecnt - 1] = fd;
844 } 1568 }
845} 1569}
846 1570
847/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1571/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
848inline_speed void 1572inline_speed void ecb_cold
849fd_kill (EV_P_ int fd) 1573fd_kill (EV_P_ int fd)
850{ 1574{
851 ev_io *w; 1575 ev_io *w;
852 1576
853 while ((w = (ev_io *)anfds [fd].head)) 1577 while ((w = (ev_io *)anfds [fd].head))
… …
855 ev_io_stop (EV_A_ w); 1579 ev_io_stop (EV_A_ w);
856 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1580 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
857 } 1581 }
858} 1582}
859 1583
860/* check whether the given fd is atcually valid, for error recovery */ 1584/* check whether the given fd is actually valid, for error recovery */
861inline_size int 1585inline_size int ecb_cold
862fd_valid (int fd) 1586fd_valid (int fd)
863{ 1587{
864#ifdef _WIN32 1588#ifdef _WIN32
865 return _get_osfhandle (fd) != -1; 1589 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
866#else 1590#else
867 return fcntl (fd, F_GETFD) != -1; 1591 return fcntl (fd, F_GETFD) != -1;
868#endif 1592#endif
869} 1593}
870 1594
871/* called on EBADF to verify fds */ 1595/* called on EBADF to verify fds */
872static void noinline 1596static void noinline ecb_cold
873fd_ebadf (EV_P) 1597fd_ebadf (EV_P)
874{ 1598{
875 int fd; 1599 int fd;
876 1600
877 for (fd = 0; fd < anfdmax; ++fd) 1601 for (fd = 0; fd < anfdmax; ++fd)
… …
879 if (!fd_valid (fd) && errno == EBADF) 1603 if (!fd_valid (fd) && errno == EBADF)
880 fd_kill (EV_A_ fd); 1604 fd_kill (EV_A_ fd);
881} 1605}
882 1606
883/* called on ENOMEM in select/poll to kill some fds and retry */ 1607/* called on ENOMEM in select/poll to kill some fds and retry */
884static void noinline 1608static void noinline ecb_cold
885fd_enomem (EV_P) 1609fd_enomem (EV_P)
886{ 1610{
887 int fd; 1611 int fd;
888 1612
889 for (fd = anfdmax; fd--; ) 1613 for (fd = anfdmax; fd--; )
890 if (anfds [fd].events) 1614 if (anfds [fd].events)
891 { 1615 {
892 fd_kill (EV_A_ fd); 1616 fd_kill (EV_A_ fd);
893 return; 1617 break;
894 } 1618 }
895} 1619}
896 1620
897/* usually called after fork if backend needs to re-arm all fds from scratch */ 1621/* usually called after fork if backend needs to re-arm all fds from scratch */
898static void noinline 1622static void noinline
… …
903 for (fd = 0; fd < anfdmax; ++fd) 1627 for (fd = 0; fd < anfdmax; ++fd)
904 if (anfds [fd].events) 1628 if (anfds [fd].events)
905 { 1629 {
906 anfds [fd].events = 0; 1630 anfds [fd].events = 0;
907 anfds [fd].emask = 0; 1631 anfds [fd].emask = 0;
908 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1632 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
909 } 1633 }
910} 1634}
911 1635
1636/* used to prepare libev internal fd's */
1637/* this is not fork-safe */
1638inline_speed void
1639fd_intern (int fd)
1640{
1641#ifdef _WIN32
1642 unsigned long arg = 1;
1643 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1644#else
1645 fcntl (fd, F_SETFD, FD_CLOEXEC);
1646 fcntl (fd, F_SETFL, O_NONBLOCK);
1647#endif
1648}
1649
912/*****************************************************************************/ 1650/*****************************************************************************/
913 1651
914/* 1652/*
915 * the heap functions want a real array index. array index 0 uis guaranteed to not 1653 * 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 1654 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
917 * the branching factor of the d-tree. 1655 * the branching factor of the d-tree.
918 */ 1656 */
919 1657
920/* 1658/*
… …
988 1726
989 for (;;) 1727 for (;;)
990 { 1728 {
991 int c = k << 1; 1729 int c = k << 1;
992 1730
993 if (c > N + HEAP0 - 1) 1731 if (c >= N + HEAP0)
994 break; 1732 break;
995 1733
996 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1734 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
997 ? 1 : 0; 1735 ? 1 : 0;
998 1736
… …
1034 1772
1035/* move an element suitably so it is in a correct place */ 1773/* move an element suitably so it is in a correct place */
1036inline_size void 1774inline_size void
1037adjustheap (ANHE *heap, int N, int k) 1775adjustheap (ANHE *heap, int N, int k)
1038{ 1776{
1039 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1777 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1040 upheap (heap, k); 1778 upheap (heap, k);
1041 else 1779 else
1042 downheap (heap, N, k); 1780 downheap (heap, N, k);
1043} 1781}
1044 1782
… …
1057/*****************************************************************************/ 1795/*****************************************************************************/
1058 1796
1059/* associate signal watchers to a signal signal */ 1797/* associate signal watchers to a signal signal */
1060typedef struct 1798typedef struct
1061{ 1799{
1800 EV_ATOMIC_T pending;
1801#if EV_MULTIPLICITY
1802 EV_P;
1803#endif
1062 WL head; 1804 WL head;
1063 EV_ATOMIC_T gotsig;
1064} ANSIG; 1805} ANSIG;
1065 1806
1066static ANSIG *signals; 1807static ANSIG signals [EV_NSIG - 1];
1067static int signalmax;
1068
1069static EV_ATOMIC_T gotsig;
1070 1808
1071/*****************************************************************************/ 1809/*****************************************************************************/
1072 1810
1073/* used to prepare libev internal fd's */ 1811#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1074/* this is not fork-safe */
1075inline_speed void
1076fd_intern (int fd)
1077{
1078#ifdef _WIN32
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 1812
1087static void noinline 1813static void noinline ecb_cold
1088evpipe_init (EV_P) 1814evpipe_init (EV_P)
1089{ 1815{
1090 if (!ev_is_active (&pipe_w)) 1816 if (!ev_is_active (&pipe_w))
1091 { 1817 {
1092#if EV_USE_EVENTFD 1818# if EV_USE_EVENTFD
1819 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1820 if (evfd < 0 && errno == EINVAL)
1093 if ((evfd = eventfd (0, 0)) >= 0) 1821 evfd = eventfd (0, 0);
1822
1823 if (evfd >= 0)
1094 { 1824 {
1095 evpipe [0] = -1; 1825 evpipe [0] = -1;
1096 fd_intern (evfd); 1826 fd_intern (evfd); /* doing it twice doesn't hurt */
1097 ev_io_set (&pipe_w, evfd, EV_READ); 1827 ev_io_set (&pipe_w, evfd, EV_READ);
1098 } 1828 }
1099 else 1829 else
1100#endif 1830# endif
1101 { 1831 {
1102 while (pipe (evpipe)) 1832 while (pipe (evpipe))
1103 ev_syserr ("(libev) error creating signal/async pipe"); 1833 ev_syserr ("(libev) error creating signal/async pipe");
1104 1834
1105 fd_intern (evpipe [0]); 1835 fd_intern (evpipe [0]);
… …
1110 ev_io_start (EV_A_ &pipe_w); 1840 ev_io_start (EV_A_ &pipe_w);
1111 ev_unref (EV_A); /* watcher should not keep loop alive */ 1841 ev_unref (EV_A); /* watcher should not keep loop alive */
1112 } 1842 }
1113} 1843}
1114 1844
1115inline_size void 1845inline_speed void
1116evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1846evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1117{ 1847{
1118 if (!*flag) 1848 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1849
1850 if (expect_true (*flag))
1851 return;
1852
1853 *flag = 1;
1854
1855 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1856
1857 pipe_write_skipped = 1;
1858
1859 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1860
1861 if (pipe_write_wanted)
1119 { 1862 {
1863 int old_errno;
1864
1865 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1866
1120 int old_errno = errno; /* save errno because write might clobber it */ 1867 old_errno = errno; /* save errno because write will clobber it */
1121
1122 *flag = 1;
1123 1868
1124#if EV_USE_EVENTFD 1869#if EV_USE_EVENTFD
1125 if (evfd >= 0) 1870 if (evfd >= 0)
1126 { 1871 {
1127 uint64_t counter = 1; 1872 uint64_t counter = 1;
1128 write (evfd, &counter, sizeof (uint64_t)); 1873 write (evfd, &counter, sizeof (uint64_t));
1129 } 1874 }
1130 else 1875 else
1131#endif 1876#endif
1877 {
1878#ifdef _WIN32
1879 WSABUF buf;
1880 DWORD sent;
1881 buf.buf = &buf;
1882 buf.len = 1;
1883 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1884#else
1132 write (evpipe [1], &old_errno, 1); 1885 write (evpipe [1], &(evpipe [1]), 1);
1886#endif
1887 }
1133 1888
1134 errno = old_errno; 1889 errno = old_errno;
1135 } 1890 }
1136} 1891}
1137 1892
1138/* called whenever the libev signal pipe */ 1893/* called whenever the libev signal pipe */
1139/* got some events (signal, async) */ 1894/* got some events (signal, async) */
1140static void 1895static void
1141pipecb (EV_P_ ev_io *iow, int revents) 1896pipecb (EV_P_ ev_io *iow, int revents)
1142{ 1897{
1898 int i;
1899
1900 if (revents & EV_READ)
1901 {
1143#if EV_USE_EVENTFD 1902#if EV_USE_EVENTFD
1144 if (evfd >= 0) 1903 if (evfd >= 0)
1145 { 1904 {
1146 uint64_t counter; 1905 uint64_t counter;
1147 read (evfd, &counter, sizeof (uint64_t)); 1906 read (evfd, &counter, sizeof (uint64_t));
1148 } 1907 }
1149 else 1908 else
1150#endif 1909#endif
1151 { 1910 {
1152 char dummy; 1911 char dummy[4];
1912#ifdef _WIN32
1913 WSABUF buf;
1914 DWORD recvd;
1915 DWORD flags = 0;
1916 buf.buf = dummy;
1917 buf.len = sizeof (dummy);
1918 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1919#else
1153 read (evpipe [0], &dummy, 1); 1920 read (evpipe [0], &dummy, sizeof (dummy));
1921#endif
1922 }
1923 }
1924
1925 pipe_write_skipped = 0;
1926
1927 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1928
1929#if EV_SIGNAL_ENABLE
1930 if (sig_pending)
1154 } 1931 {
1932 sig_pending = 0;
1155 1933
1156 if (gotsig && ev_is_default_loop (EV_A)) 1934 ECB_MEMORY_FENCE_RELEASE;
1157 {
1158 int signum;
1159 gotsig = 0;
1160 1935
1161 for (signum = signalmax; signum--; ) 1936 for (i = EV_NSIG - 1; i--; )
1162 if (signals [signum].gotsig) 1937 if (expect_false (signals [i].pending))
1163 ev_feed_signal_event (EV_A_ signum + 1); 1938 ev_feed_signal_event (EV_A_ i + 1);
1164 } 1939 }
1940#endif
1165 1941
1166#if EV_ASYNC_ENABLE 1942#if EV_ASYNC_ENABLE
1167 if (gotasync) 1943 if (async_pending)
1168 { 1944 {
1169 int i; 1945 async_pending = 0;
1170 gotasync = 0; 1946
1947 ECB_MEMORY_FENCE_RELEASE;
1171 1948
1172 for (i = asynccnt; i--; ) 1949 for (i = asynccnt; i--; )
1173 if (asyncs [i]->sent) 1950 if (asyncs [i]->sent)
1174 { 1951 {
1175 asyncs [i]->sent = 0; 1952 asyncs [i]->sent = 0;
… …
1179#endif 1956#endif
1180} 1957}
1181 1958
1182/*****************************************************************************/ 1959/*****************************************************************************/
1183 1960
1961void
1962ev_feed_signal (int signum) EV_THROW
1963{
1964#if EV_MULTIPLICITY
1965 EV_P = signals [signum - 1].loop;
1966
1967 if (!EV_A)
1968 return;
1969#endif
1970
1971 if (!ev_active (&pipe_w))
1972 return;
1973
1974 signals [signum - 1].pending = 1;
1975 evpipe_write (EV_A_ &sig_pending);
1976}
1977
1184static void 1978static void
1185ev_sighandler (int signum) 1979ev_sighandler (int signum)
1186{ 1980{
1981#ifdef _WIN32
1982 signal (signum, ev_sighandler);
1983#endif
1984
1985 ev_feed_signal (signum);
1986}
1987
1988void noinline
1989ev_feed_signal_event (EV_P_ int signum) EV_THROW
1990{
1991 WL w;
1992
1993 if (expect_false (signum <= 0 || signum > EV_NSIG))
1994 return;
1995
1996 --signum;
1997
1187#if EV_MULTIPLICITY 1998#if EV_MULTIPLICITY
1188 struct ev_loop *loop = &default_loop_struct; 1999 /* it is permissible to try to feed a signal to the wrong loop */
1189#endif 2000 /* or, likely more useful, feeding a signal nobody is waiting for */
1190 2001
1191#if _WIN32 2002 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; 2003 return;
2004#endif
1212 2005
1213 signals [signum].gotsig = 0; 2006 signals [signum].pending = 0;
1214 2007
1215 for (w = signals [signum].head; w; w = w->next) 2008 for (w = signals [signum].head; w; w = w->next)
1216 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2009 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1217} 2010}
1218 2011
2012#if EV_USE_SIGNALFD
2013static void
2014sigfdcb (EV_P_ ev_io *iow, int revents)
2015{
2016 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2017
2018 for (;;)
2019 {
2020 ssize_t res = read (sigfd, si, sizeof (si));
2021
2022 /* not ISO-C, as res might be -1, but works with SuS */
2023 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2024 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2025
2026 if (res < (ssize_t)sizeof (si))
2027 break;
2028 }
2029}
2030#endif
2031
2032#endif
2033
1219/*****************************************************************************/ 2034/*****************************************************************************/
1220 2035
2036#if EV_CHILD_ENABLE
1221static WL childs [EV_PID_HASHSIZE]; 2037static WL childs [EV_PID_HASHSIZE];
1222
1223#ifndef _WIN32
1224 2038
1225static ev_signal childev; 2039static ev_signal childev;
1226 2040
1227#ifndef WIFCONTINUED 2041#ifndef WIFCONTINUED
1228# define WIFCONTINUED(status) 0 2042# define WIFCONTINUED(status) 0
… …
1233child_reap (EV_P_ int chain, int pid, int status) 2047child_reap (EV_P_ int chain, int pid, int status)
1234{ 2048{
1235 ev_child *w; 2049 ev_child *w;
1236 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2050 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1237 2051
1238 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2052 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1239 { 2053 {
1240 if ((w->pid == pid || !w->pid) 2054 if ((w->pid == pid || !w->pid)
1241 && (!traced || (w->flags & 1))) 2055 && (!traced || (w->flags & 1)))
1242 { 2056 {
1243 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2057 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 */ 2082 /* 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 */ 2083 /* 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); 2084 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1271 2085
1272 child_reap (EV_A_ pid, pid, status); 2086 child_reap (EV_A_ pid, pid, status);
1273 if (EV_PID_HASHSIZE > 1) 2087 if ((EV_PID_HASHSIZE) > 1)
1274 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2088 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1275} 2089}
1276 2090
1277#endif 2091#endif
1278 2092
1279/*****************************************************************************/ 2093/*****************************************************************************/
1280 2094
2095#if EV_USE_IOCP
2096# include "ev_iocp.c"
2097#endif
1281#if EV_USE_PORT 2098#if EV_USE_PORT
1282# include "ev_port.c" 2099# include "ev_port.c"
1283#endif 2100#endif
1284#if EV_USE_KQUEUE 2101#if EV_USE_KQUEUE
1285# include "ev_kqueue.c" 2102# include "ev_kqueue.c"
… …
1292#endif 2109#endif
1293#if EV_USE_SELECT 2110#if EV_USE_SELECT
1294# include "ev_select.c" 2111# include "ev_select.c"
1295#endif 2112#endif
1296 2113
1297int 2114int ecb_cold
1298ev_version_major (void) 2115ev_version_major (void) EV_THROW
1299{ 2116{
1300 return EV_VERSION_MAJOR; 2117 return EV_VERSION_MAJOR;
1301} 2118}
1302 2119
1303int 2120int ecb_cold
1304ev_version_minor (void) 2121ev_version_minor (void) EV_THROW
1305{ 2122{
1306 return EV_VERSION_MINOR; 2123 return EV_VERSION_MINOR;
1307} 2124}
1308 2125
1309/* return true if we are running with elevated privileges and should ignore env variables */ 2126/* return true if we are running with elevated privileges and should ignore env variables */
1310int inline_size 2127int inline_size ecb_cold
1311enable_secure (void) 2128enable_secure (void)
1312{ 2129{
1313#ifdef _WIN32 2130#ifdef _WIN32
1314 return 0; 2131 return 0;
1315#else 2132#else
1316 return getuid () != geteuid () 2133 return getuid () != geteuid ()
1317 || getgid () != getegid (); 2134 || getgid () != getegid ();
1318#endif 2135#endif
1319} 2136}
1320 2137
1321unsigned int 2138unsigned int ecb_cold
1322ev_supported_backends (void) 2139ev_supported_backends (void) EV_THROW
1323{ 2140{
1324 unsigned int flags = 0; 2141 unsigned int flags = 0;
1325 2142
1326 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2143 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1327 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2144 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1330 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2147 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1331 2148
1332 return flags; 2149 return flags;
1333} 2150}
1334 2151
1335unsigned int 2152unsigned int ecb_cold
1336ev_recommended_backends (void) 2153ev_recommended_backends (void) EV_THROW
1337{ 2154{
1338 unsigned int flags = ev_supported_backends (); 2155 unsigned int flags = ev_supported_backends ();
1339 2156
1340#ifndef __NetBSD__ 2157#ifndef __NetBSD__
1341 /* kqueue is borked on everything but netbsd apparently */ 2158 /* kqueue is borked on everything but netbsd apparently */
… …
1345#ifdef __APPLE__ 2162#ifdef __APPLE__
1346 /* only select works correctly on that "unix-certified" platform */ 2163 /* only select works correctly on that "unix-certified" platform */
1347 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2164 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1348 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2165 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1349#endif 2166#endif
2167#ifdef __FreeBSD__
2168 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2169#endif
1350 2170
1351 return flags; 2171 return flags;
1352} 2172}
1353 2173
2174unsigned int ecb_cold
2175ev_embeddable_backends (void) EV_THROW
2176{
2177 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2178
2179 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2180 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2181 flags &= ~EVBACKEND_EPOLL;
2182
2183 return flags;
2184}
2185
1354unsigned int 2186unsigned int
1355ev_embeddable_backends (void) 2187ev_backend (EV_P) EV_THROW
1356{ 2188{
1357 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2189 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} 2190}
1365 2191
2192#if EV_FEATURE_API
1366unsigned int 2193unsigned int
1367ev_backend (EV_P) 2194ev_iteration (EV_P) EV_THROW
1368{ 2195{
1369 return backend; 2196 return loop_count;
1370} 2197}
1371 2198
1372#if EV_MINIMAL < 2
1373unsigned int 2199unsigned int
1374ev_loop_count (EV_P) 2200ev_depth (EV_P) EV_THROW
1375{
1376 return loop_count;
1377}
1378
1379unsigned int
1380ev_loop_depth (EV_P)
1381{ 2201{
1382 return loop_depth; 2202 return loop_depth;
1383} 2203}
1384 2204
1385void 2205void
1386ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2206ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1387{ 2207{
1388 io_blocktime = interval; 2208 io_blocktime = interval;
1389} 2209}
1390 2210
1391void 2211void
1392ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2212ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1393{ 2213{
1394 timeout_blocktime = interval; 2214 timeout_blocktime = interval;
1395} 2215}
1396 2216
1397void 2217void
1398ev_set_userdata (EV_P_ void *data) 2218ev_set_userdata (EV_P_ void *data) EV_THROW
1399{ 2219{
1400 userdata = data; 2220 userdata = data;
1401} 2221}
1402 2222
1403void * 2223void *
1404ev_userdata (EV_P) 2224ev_userdata (EV_P) EV_THROW
1405{ 2225{
1406 return userdata; 2226 return userdata;
1407} 2227}
1408 2228
2229void
1409void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2230ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1410{ 2231{
1411 invoke_cb = invoke_pending_cb; 2232 invoke_cb = invoke_pending_cb;
1412} 2233}
1413 2234
1414void ev_set_blocking_cb (EV_P_ void (*suspend_cb_)(EV_P), void (*resume_cb_)(EV_P)) 2235void
2236ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1415{ 2237{
1416 suspend_cb = suspend_cb_; 2238 release_cb = release;
1417 resume_cb = resume_cb_; 2239 acquire_cb = acquire;
1418} 2240}
1419#endif 2241#endif
1420 2242
1421/* initialise a loop structure, must be zero-initialised */ 2243/* initialise a loop structure, must be zero-initialised */
1422static void noinline 2244static void noinline ecb_cold
1423loop_init (EV_P_ unsigned int flags) 2245loop_init (EV_P_ unsigned int flags) EV_THROW
1424{ 2246{
1425 if (!backend) 2247 if (!backend)
1426 { 2248 {
2249 origflags = flags;
2250
1427#if EV_USE_REALTIME 2251#if EV_USE_REALTIME
1428 if (!have_realtime) 2252 if (!have_realtime)
1429 { 2253 {
1430 struct timespec ts; 2254 struct timespec ts;
1431 2255
… …
1442 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2266 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1443 have_monotonic = 1; 2267 have_monotonic = 1;
1444 } 2268 }
1445#endif 2269#endif
1446 2270
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 */ 2271 /* pid check not overridable via env */
1465#ifndef _WIN32 2272#ifndef _WIN32
1466 if (flags & EVFLAG_FORKCHECK) 2273 if (flags & EVFLAG_FORKCHECK)
1467 curpid = getpid (); 2274 curpid = getpid ();
1468#endif 2275#endif
… …
1470 if (!(flags & EVFLAG_NOENV) 2277 if (!(flags & EVFLAG_NOENV)
1471 && !enable_secure () 2278 && !enable_secure ()
1472 && getenv ("LIBEV_FLAGS")) 2279 && getenv ("LIBEV_FLAGS"))
1473 flags = atoi (getenv ("LIBEV_FLAGS")); 2280 flags = atoi (getenv ("LIBEV_FLAGS"));
1474 2281
1475 if (!(flags & 0x0000ffffU)) 2282 ev_rt_now = ev_time ();
2283 mn_now = get_clock ();
2284 now_floor = mn_now;
2285 rtmn_diff = ev_rt_now - mn_now;
2286#if EV_FEATURE_API
2287 invoke_cb = ev_invoke_pending;
2288#endif
2289
2290 io_blocktime = 0.;
2291 timeout_blocktime = 0.;
2292 backend = 0;
2293 backend_fd = -1;
2294 sig_pending = 0;
2295#if EV_ASYNC_ENABLE
2296 async_pending = 0;
2297#endif
2298 pipe_write_skipped = 0;
2299 pipe_write_wanted = 0;
2300#if EV_USE_INOTIFY
2301 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2302#endif
2303#if EV_USE_SIGNALFD
2304 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2305#endif
2306
2307 if (!(flags & EVBACKEND_MASK))
1476 flags |= ev_recommended_backends (); 2308 flags |= ev_recommended_backends ();
1477 2309
2310#if EV_USE_IOCP
2311 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2312#endif
1478#if EV_USE_PORT 2313#if EV_USE_PORT
1479 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2314 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1480#endif 2315#endif
1481#if EV_USE_KQUEUE 2316#if EV_USE_KQUEUE
1482 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2317 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1491 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2326 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1492#endif 2327#endif
1493 2328
1494 ev_prepare_init (&pending_w, pendingcb); 2329 ev_prepare_init (&pending_w, pendingcb);
1495 2330
2331#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1496 ev_init (&pipe_w, pipecb); 2332 ev_init (&pipe_w, pipecb);
1497 ev_set_priority (&pipe_w, EV_MAXPRI); 2333 ev_set_priority (&pipe_w, EV_MAXPRI);
2334#endif
1498 } 2335 }
1499} 2336}
1500 2337
1501/* free up a loop structure */ 2338/* free up a loop structure */
1502static void noinline 2339void ecb_cold
1503loop_destroy (EV_P) 2340ev_loop_destroy (EV_P)
1504{ 2341{
1505 int i; 2342 int i;
1506 2343
2344#if EV_MULTIPLICITY
2345 /* mimic free (0) */
2346 if (!EV_A)
2347 return;
2348#endif
2349
2350#if EV_CLEANUP_ENABLE
2351 /* queue cleanup watchers (and execute them) */
2352 if (expect_false (cleanupcnt))
2353 {
2354 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2355 EV_INVOKE_PENDING;
2356 }
2357#endif
2358
2359#if EV_CHILD_ENABLE
2360 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2361 {
2362 ev_ref (EV_A); /* child watcher */
2363 ev_signal_stop (EV_A_ &childev);
2364 }
2365#endif
2366
1507 if (ev_is_active (&pipe_w)) 2367 if (ev_is_active (&pipe_w))
1508 { 2368 {
1509 ev_ref (EV_A); /* signal watcher */ 2369 /*ev_ref (EV_A);*/
1510 ev_io_stop (EV_A_ &pipe_w); 2370 /*ev_io_stop (EV_A_ &pipe_w);*/
1511 2371
1512#if EV_USE_EVENTFD 2372#if EV_USE_EVENTFD
1513 if (evfd >= 0) 2373 if (evfd >= 0)
1514 close (evfd); 2374 close (evfd);
1515#endif 2375#endif
1516 2376
1517 if (evpipe [0] >= 0) 2377 if (evpipe [0] >= 0)
1518 { 2378 {
1519 close (evpipe [0]); 2379 EV_WIN32_CLOSE_FD (evpipe [0]);
1520 close (evpipe [1]); 2380 EV_WIN32_CLOSE_FD (evpipe [1]);
1521 } 2381 }
1522 } 2382 }
2383
2384#if EV_USE_SIGNALFD
2385 if (ev_is_active (&sigfd_w))
2386 close (sigfd);
2387#endif
1523 2388
1524#if EV_USE_INOTIFY 2389#if EV_USE_INOTIFY
1525 if (fs_fd >= 0) 2390 if (fs_fd >= 0)
1526 close (fs_fd); 2391 close (fs_fd);
1527#endif 2392#endif
1528 2393
1529 if (backend_fd >= 0) 2394 if (backend_fd >= 0)
1530 close (backend_fd); 2395 close (backend_fd);
1531 2396
2397#if EV_USE_IOCP
2398 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2399#endif
1532#if EV_USE_PORT 2400#if EV_USE_PORT
1533 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2401 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1534#endif 2402#endif
1535#if EV_USE_KQUEUE 2403#if EV_USE_KQUEUE
1536 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2404 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1551#if EV_IDLE_ENABLE 2419#if EV_IDLE_ENABLE
1552 array_free (idle, [i]); 2420 array_free (idle, [i]);
1553#endif 2421#endif
1554 } 2422 }
1555 2423
1556 ev_free (anfds); anfdmax = 0; 2424 ev_free (anfds); anfds = 0; anfdmax = 0;
1557 2425
1558 /* have to use the microsoft-never-gets-it-right macro */ 2426 /* have to use the microsoft-never-gets-it-right macro */
1559 array_free (rfeed, EMPTY); 2427 array_free (rfeed, EMPTY);
1560 array_free (fdchange, EMPTY); 2428 array_free (fdchange, EMPTY);
1561 array_free (timer, EMPTY); 2429 array_free (timer, EMPTY);
… …
1563 array_free (periodic, EMPTY); 2431 array_free (periodic, EMPTY);
1564#endif 2432#endif
1565#if EV_FORK_ENABLE 2433#if EV_FORK_ENABLE
1566 array_free (fork, EMPTY); 2434 array_free (fork, EMPTY);
1567#endif 2435#endif
2436#if EV_CLEANUP_ENABLE
2437 array_free (cleanup, EMPTY);
2438#endif
1568 array_free (prepare, EMPTY); 2439 array_free (prepare, EMPTY);
1569 array_free (check, EMPTY); 2440 array_free (check, EMPTY);
1570#if EV_ASYNC_ENABLE 2441#if EV_ASYNC_ENABLE
1571 array_free (async, EMPTY); 2442 array_free (async, EMPTY);
1572#endif 2443#endif
1573 2444
1574 backend = 0; 2445 backend = 0;
2446
2447#if EV_MULTIPLICITY
2448 if (ev_is_default_loop (EV_A))
2449#endif
2450 ev_default_loop_ptr = 0;
2451#if EV_MULTIPLICITY
2452 else
2453 ev_free (EV_A);
2454#endif
1575} 2455}
1576 2456
1577#if EV_USE_INOTIFY 2457#if EV_USE_INOTIFY
1578inline_size void infy_fork (EV_P); 2458inline_size void infy_fork (EV_P);
1579#endif 2459#endif
… …
1594 infy_fork (EV_A); 2474 infy_fork (EV_A);
1595#endif 2475#endif
1596 2476
1597 if (ev_is_active (&pipe_w)) 2477 if (ev_is_active (&pipe_w))
1598 { 2478 {
1599 /* this "locks" the handlers against writing to the pipe */ 2479 /* 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 2480
1606 ev_ref (EV_A); 2481 ev_ref (EV_A);
1607 ev_io_stop (EV_A_ &pipe_w); 2482 ev_io_stop (EV_A_ &pipe_w);
1608 2483
1609#if EV_USE_EVENTFD 2484#if EV_USE_EVENTFD
… …
1611 close (evfd); 2486 close (evfd);
1612#endif 2487#endif
1613 2488
1614 if (evpipe [0] >= 0) 2489 if (evpipe [0] >= 0)
1615 { 2490 {
1616 close (evpipe [0]); 2491 EV_WIN32_CLOSE_FD (evpipe [0]);
1617 close (evpipe [1]); 2492 EV_WIN32_CLOSE_FD (evpipe [1]);
1618 } 2493 }
1619 2494
2495#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1620 evpipe_init (EV_A); 2496 evpipe_init (EV_A);
1621 /* now iterate over everything, in case we missed something */ 2497 /* now iterate over everything, in case we missed something */
1622 pipecb (EV_A_ &pipe_w, EV_READ); 2498 pipecb (EV_A_ &pipe_w, EV_READ);
2499#endif
1623 } 2500 }
1624 2501
1625 postfork = 0; 2502 postfork = 0;
1626} 2503}
1627 2504
1628#if EV_MULTIPLICITY 2505#if EV_MULTIPLICITY
1629 2506
1630struct ev_loop * 2507struct ev_loop * ecb_cold
1631ev_loop_new (unsigned int flags) 2508ev_loop_new (unsigned int flags) EV_THROW
1632{ 2509{
1633 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2510 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1634 2511
1635 memset (loop, 0, sizeof (struct ev_loop)); 2512 memset (EV_A, 0, sizeof (struct ev_loop));
1636
1637 loop_init (EV_A_ flags); 2513 loop_init (EV_A_ flags);
1638 2514
1639 if (ev_backend (EV_A)) 2515 if (ev_backend (EV_A))
1640 return loop; 2516 return EV_A;
1641 2517
2518 ev_free (EV_A);
1642 return 0; 2519 return 0;
1643} 2520}
1644 2521
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 */ 2522#endif /* multiplicity */
1658 2523
1659#if EV_VERIFY 2524#if EV_VERIFY
1660static void noinline 2525static void noinline ecb_cold
1661verify_watcher (EV_P_ W w) 2526verify_watcher (EV_P_ W w)
1662{ 2527{
1663 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2528 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1664 2529
1665 if (w->pending) 2530 if (w->pending)
1666 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2531 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1667} 2532}
1668 2533
1669static void noinline 2534static void noinline ecb_cold
1670verify_heap (EV_P_ ANHE *heap, int N) 2535verify_heap (EV_P_ ANHE *heap, int N)
1671{ 2536{
1672 int i; 2537 int i;
1673 2538
1674 for (i = HEAP0; i < N + HEAP0; ++i) 2539 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1679 2544
1680 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2545 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1681 } 2546 }
1682} 2547}
1683 2548
1684static void noinline 2549static void noinline ecb_cold
1685array_verify (EV_P_ W *ws, int cnt) 2550array_verify (EV_P_ W *ws, int cnt)
1686{ 2551{
1687 while (cnt--) 2552 while (cnt--)
1688 { 2553 {
1689 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2554 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1690 verify_watcher (EV_A_ ws [cnt]); 2555 verify_watcher (EV_A_ ws [cnt]);
1691 } 2556 }
1692} 2557}
1693#endif 2558#endif
1694 2559
1695#if EV_MINIMAL < 2 2560#if EV_FEATURE_API
1696void 2561void ecb_cold
1697ev_loop_verify (EV_P) 2562ev_verify (EV_P) EV_THROW
1698{ 2563{
1699#if EV_VERIFY 2564#if EV_VERIFY
1700 int i; 2565 int i;
1701 WL w; 2566 WL w, w2;
1702 2567
1703 assert (activecnt >= -1); 2568 assert (activecnt >= -1);
1704 2569
1705 assert (fdchangemax >= fdchangecnt); 2570 assert (fdchangemax >= fdchangecnt);
1706 for (i = 0; i < fdchangecnt; ++i) 2571 for (i = 0; i < fdchangecnt; ++i)
1707 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2572 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1708 2573
1709 assert (anfdmax >= 0); 2574 assert (anfdmax >= 0);
1710 for (i = 0; i < anfdmax; ++i) 2575 for (i = 0; i < anfdmax; ++i)
2576 {
2577 int j = 0;
2578
1711 for (w = anfds [i].head; w; w = w->next) 2579 for (w = w2 = anfds [i].head; w; w = w->next)
1712 { 2580 {
1713 verify_watcher (EV_A_ (W)w); 2581 verify_watcher (EV_A_ (W)w);
2582
2583 if (j++ & 1)
2584 {
2585 assert (("libev: io watcher list contains a loop", w != w2));
2586 w2 = w2->next;
2587 }
2588
1714 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2589 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)); 2590 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1716 } 2591 }
2592 }
1717 2593
1718 assert (timermax >= timercnt); 2594 assert (timermax >= timercnt);
1719 verify_heap (EV_A_ timers, timercnt); 2595 verify_heap (EV_A_ timers, timercnt);
1720 2596
1721#if EV_PERIODIC_ENABLE 2597#if EV_PERIODIC_ENABLE
… …
1736#if EV_FORK_ENABLE 2612#if EV_FORK_ENABLE
1737 assert (forkmax >= forkcnt); 2613 assert (forkmax >= forkcnt);
1738 array_verify (EV_A_ (W *)forks, forkcnt); 2614 array_verify (EV_A_ (W *)forks, forkcnt);
1739#endif 2615#endif
1740 2616
2617#if EV_CLEANUP_ENABLE
2618 assert (cleanupmax >= cleanupcnt);
2619 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2620#endif
2621
1741#if EV_ASYNC_ENABLE 2622#if EV_ASYNC_ENABLE
1742 assert (asyncmax >= asynccnt); 2623 assert (asyncmax >= asynccnt);
1743 array_verify (EV_A_ (W *)asyncs, asynccnt); 2624 array_verify (EV_A_ (W *)asyncs, asynccnt);
1744#endif 2625#endif
1745 2626
2627#if EV_PREPARE_ENABLE
1746 assert (preparemax >= preparecnt); 2628 assert (preparemax >= preparecnt);
1747 array_verify (EV_A_ (W *)prepares, preparecnt); 2629 array_verify (EV_A_ (W *)prepares, preparecnt);
2630#endif
1748 2631
2632#if EV_CHECK_ENABLE
1749 assert (checkmax >= checkcnt); 2633 assert (checkmax >= checkcnt);
1750 array_verify (EV_A_ (W *)checks, checkcnt); 2634 array_verify (EV_A_ (W *)checks, checkcnt);
2635#endif
1751 2636
1752# if 0 2637# if 0
2638#if EV_CHILD_ENABLE
1753 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2639 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) 2640 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2641#endif
1755# endif 2642# endif
1756#endif 2643#endif
1757} 2644}
1758#endif 2645#endif
1759 2646
1760#if EV_MULTIPLICITY 2647#if EV_MULTIPLICITY
1761struct ev_loop * 2648struct ev_loop * ecb_cold
1762ev_default_loop_init (unsigned int flags)
1763#else 2649#else
1764int 2650int
2651#endif
1765ev_default_loop (unsigned int flags) 2652ev_default_loop (unsigned int flags) EV_THROW
1766#endif
1767{ 2653{
1768 if (!ev_default_loop_ptr) 2654 if (!ev_default_loop_ptr)
1769 { 2655 {
1770#if EV_MULTIPLICITY 2656#if EV_MULTIPLICITY
1771 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2657 EV_P = ev_default_loop_ptr = &default_loop_struct;
1772#else 2658#else
1773 ev_default_loop_ptr = 1; 2659 ev_default_loop_ptr = 1;
1774#endif 2660#endif
1775 2661
1776 loop_init (EV_A_ flags); 2662 loop_init (EV_A_ flags);
1777 2663
1778 if (ev_backend (EV_A)) 2664 if (ev_backend (EV_A))
1779 { 2665 {
1780#ifndef _WIN32 2666#if EV_CHILD_ENABLE
1781 ev_signal_init (&childev, childcb, SIGCHLD); 2667 ev_signal_init (&childev, childcb, SIGCHLD);
1782 ev_set_priority (&childev, EV_MAXPRI); 2668 ev_set_priority (&childev, EV_MAXPRI);
1783 ev_signal_start (EV_A_ &childev); 2669 ev_signal_start (EV_A_ &childev);
1784 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2670 ev_unref (EV_A); /* child watcher should not keep loop alive */
1785#endif 2671#endif
… …
1790 2676
1791 return ev_default_loop_ptr; 2677 return ev_default_loop_ptr;
1792} 2678}
1793 2679
1794void 2680void
1795ev_default_destroy (void) 2681ev_loop_fork (EV_P) EV_THROW
1796{ 2682{
1797#if EV_MULTIPLICITY
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 */ 2683 postfork = 1; /* must be in line with ev_default_fork */
1819} 2684}
1820 2685
1821/*****************************************************************************/ 2686/*****************************************************************************/
1822 2687
1823void 2688void
1824ev_invoke (EV_P_ void *w, int revents) 2689ev_invoke (EV_P_ void *w, int revents)
1825{ 2690{
1826 EV_CB_INVOKE ((W)w, revents); 2691 EV_CB_INVOKE ((W)w, revents);
1827} 2692}
1828 2693
2694unsigned int
2695ev_pending_count (EV_P) EV_THROW
2696{
2697 int pri;
2698 unsigned int count = 0;
2699
2700 for (pri = NUMPRI; pri--; )
2701 count += pendingcnt [pri];
2702
2703 return count;
2704}
2705
1829void noinline 2706void noinline
1830ev_invoke_pending (EV_P) 2707ev_invoke_pending (EV_P)
1831{ 2708{
1832 int pri; 2709 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
1833
1834 for (pri = NUMPRI; pri--; )
1835 while (pendingcnt [pri]) 2710 while (pendingcnt [pendingpri])
1836 { 2711 {
1837 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2712 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1838
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 2713
1842 p->w->pending = 0; 2714 p->w->pending = 0;
1843 EV_CB_INVOKE (p->w, p->events); 2715 EV_CB_INVOKE (p->w, p->events);
1844 EV_FREQUENT_CHECK; 2716 EV_FREQUENT_CHECK;
1845 } 2717 }
… …
1902 EV_FREQUENT_CHECK; 2774 EV_FREQUENT_CHECK;
1903 feed_reverse (EV_A_ (W)w); 2775 feed_reverse (EV_A_ (W)w);
1904 } 2776 }
1905 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2777 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1906 2778
1907 feed_reverse_done (EV_A_ EV_TIMEOUT); 2779 feed_reverse_done (EV_A_ EV_TIMER);
1908 } 2780 }
1909} 2781}
1910 2782
1911#if EV_PERIODIC_ENABLE 2783#if EV_PERIODIC_ENABLE
2784
2785static void noinline
2786periodic_recalc (EV_P_ ev_periodic *w)
2787{
2788 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2789 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2790
2791 /* the above almost always errs on the low side */
2792 while (at <= ev_rt_now)
2793 {
2794 ev_tstamp nat = at + w->interval;
2795
2796 /* when resolution fails us, we use ev_rt_now */
2797 if (expect_false (nat == at))
2798 {
2799 at = ev_rt_now;
2800 break;
2801 }
2802
2803 at = nat;
2804 }
2805
2806 ev_at (w) = at;
2807}
2808
1912/* make periodics pending */ 2809/* make periodics pending */
1913inline_size void 2810inline_size void
1914periodics_reify (EV_P) 2811periodics_reify (EV_P)
1915{ 2812{
1916 EV_FREQUENT_CHECK; 2813 EV_FREQUENT_CHECK;
1917 2814
1918 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2815 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1919 { 2816 {
1920 int feed_count = 0;
1921
1922 do 2817 do
1923 { 2818 {
1924 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2819 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1925 2820
1926 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2821 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1935 ANHE_at_cache (periodics [HEAP0]); 2830 ANHE_at_cache (periodics [HEAP0]);
1936 downheap (periodics, periodiccnt, HEAP0); 2831 downheap (periodics, periodiccnt, HEAP0);
1937 } 2832 }
1938 else if (w->interval) 2833 else if (w->interval)
1939 { 2834 {
1940 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2835 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]); 2836 ANHE_at_cache (periodics [HEAP0]);
1955 downheap (periodics, periodiccnt, HEAP0); 2837 downheap (periodics, periodiccnt, HEAP0);
1956 } 2838 }
1957 else 2839 else
1958 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2840 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1965 feed_reverse_done (EV_A_ EV_PERIODIC); 2847 feed_reverse_done (EV_A_ EV_PERIODIC);
1966 } 2848 }
1967} 2849}
1968 2850
1969/* simply recalculate all periodics */ 2851/* simply recalculate all periodics */
1970/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2852/* TODO: maybe ensure that at least one event happens when jumping forward? */
1971static void noinline 2853static void noinline ecb_cold
1972periodics_reschedule (EV_P) 2854periodics_reschedule (EV_P)
1973{ 2855{
1974 int i; 2856 int i;
1975 2857
1976 /* adjust periodics after time jump */ 2858 /* adjust periodics after time jump */
… …
1979 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2861 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1980 2862
1981 if (w->reschedule_cb) 2863 if (w->reschedule_cb)
1982 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2864 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1983 else if (w->interval) 2865 else if (w->interval)
1984 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2866 periodic_recalc (EV_A_ w);
1985 2867
1986 ANHE_at_cache (periodics [i]); 2868 ANHE_at_cache (periodics [i]);
1987 } 2869 }
1988 2870
1989 reheap (periodics, periodiccnt); 2871 reheap (periodics, periodiccnt);
1990} 2872}
1991#endif 2873#endif
1992 2874
1993/* adjust all timers by a given offset */ 2875/* adjust all timers by a given offset */
1994static void noinline 2876static void noinline ecb_cold
1995timers_reschedule (EV_P_ ev_tstamp adjust) 2877timers_reschedule (EV_P_ ev_tstamp adjust)
1996{ 2878{
1997 int i; 2879 int i;
1998 2880
1999 for (i = 0; i < timercnt; ++i) 2881 for (i = 0; i < timercnt; ++i)
… …
2003 ANHE_at_cache (*he); 2885 ANHE_at_cache (*he);
2004 } 2886 }
2005} 2887}
2006 2888
2007/* fetch new monotonic and realtime times from the kernel */ 2889/* fetch new monotonic and realtime times from the kernel */
2008/* also detetc if there was a timejump, and act accordingly */ 2890/* also detect if there was a timejump, and act accordingly */
2009inline_speed void 2891inline_speed void
2010time_update (EV_P_ ev_tstamp max_block) 2892time_update (EV_P_ ev_tstamp max_block)
2011{ 2893{
2012#if EV_USE_MONOTONIC 2894#if EV_USE_MONOTONIC
2013 if (expect_true (have_monotonic)) 2895 if (expect_true (have_monotonic))
… …
2036 * doesn't hurt either as we only do this on time-jumps or 2918 * doesn't hurt either as we only do this on time-jumps or
2037 * in the unlikely event of having been preempted here. 2919 * in the unlikely event of having been preempted here.
2038 */ 2920 */
2039 for (i = 4; --i; ) 2921 for (i = 4; --i; )
2040 { 2922 {
2923 ev_tstamp diff;
2041 rtmn_diff = ev_rt_now - mn_now; 2924 rtmn_diff = ev_rt_now - mn_now;
2042 2925
2926 diff = odiff - rtmn_diff;
2927
2043 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2928 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2044 return; /* all is well */ 2929 return; /* all is well */
2045 2930
2046 ev_rt_now = ev_time (); 2931 ev_rt_now = ev_time ();
2047 mn_now = get_clock (); 2932 mn_now = get_clock ();
2048 now_floor = mn_now; 2933 now_floor = mn_now;
… …
2070 2955
2071 mn_now = ev_rt_now; 2956 mn_now = ev_rt_now;
2072 } 2957 }
2073} 2958}
2074 2959
2075void 2960int
2076ev_loop (EV_P_ int flags) 2961ev_run (EV_P_ int flags)
2077{ 2962{
2078#if EV_MINIMAL < 2 2963#if EV_FEATURE_API
2079 ++loop_depth; 2964 ++loop_depth;
2080#endif 2965#endif
2081 2966
2967 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2968
2082 loop_done = EVUNLOOP_CANCEL; 2969 loop_done = EVBREAK_CANCEL;
2083 2970
2084 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2971 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2085 2972
2086 do 2973 do
2087 { 2974 {
2088#if EV_VERIFY >= 2 2975#if EV_VERIFY >= 2
2089 ev_loop_verify (EV_A); 2976 ev_verify (EV_A);
2090#endif 2977#endif
2091 2978
2092#ifndef _WIN32 2979#ifndef _WIN32
2093 if (expect_false (curpid)) /* penalise the forking check even more */ 2980 if (expect_false (curpid)) /* penalise the forking check even more */
2094 if (expect_false (getpid () != curpid)) 2981 if (expect_false (getpid () != curpid))
… …
2106 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2993 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2107 EV_INVOKE_PENDING; 2994 EV_INVOKE_PENDING;
2108 } 2995 }
2109#endif 2996#endif
2110 2997
2998#if EV_PREPARE_ENABLE
2111 /* queue prepare watchers (and execute them) */ 2999 /* queue prepare watchers (and execute them) */
2112 if (expect_false (preparecnt)) 3000 if (expect_false (preparecnt))
2113 { 3001 {
2114 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3002 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2115 EV_INVOKE_PENDING; 3003 EV_INVOKE_PENDING;
2116 } 3004 }
3005#endif
3006
3007 if (expect_false (loop_done))
3008 break;
2117 3009
2118 /* we might have forked, so reify kernel state if necessary */ 3010 /* we might have forked, so reify kernel state if necessary */
2119 if (expect_false (postfork)) 3011 if (expect_false (postfork))
2120 loop_fork (EV_A); 3012 loop_fork (EV_A);
2121 3013
… …
2125 /* calculate blocking time */ 3017 /* calculate blocking time */
2126 { 3018 {
2127 ev_tstamp waittime = 0.; 3019 ev_tstamp waittime = 0.;
2128 ev_tstamp sleeptime = 0.; 3020 ev_tstamp sleeptime = 0.;
2129 3021
3022 /* remember old timestamp for io_blocktime calculation */
3023 ev_tstamp prev_mn_now = mn_now;
3024
3025 /* update time to cancel out callback processing overhead */
3026 time_update (EV_A_ 1e100);
3027
3028 /* from now on, we want a pipe-wake-up */
3029 pipe_write_wanted = 1;
3030
3031 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3032
2130 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3033 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2131 { 3034 {
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; 3035 waittime = MAX_BLOCKTIME;
2139 3036
2140 if (timercnt) 3037 if (timercnt)
2141 { 3038 {
2142 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3039 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2143 if (waittime > to) waittime = to; 3040 if (waittime > to) waittime = to;
2144 } 3041 }
2145 3042
2146#if EV_PERIODIC_ENABLE 3043#if EV_PERIODIC_ENABLE
2147 if (periodiccnt) 3044 if (periodiccnt)
2148 { 3045 {
2149 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3046 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2150 if (waittime > to) waittime = to; 3047 if (waittime > to) waittime = to;
2151 } 3048 }
2152#endif 3049#endif
2153 3050
2154 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3051 /* don't let timeouts decrease the waittime below timeout_blocktime */
2155 if (expect_false (waittime < timeout_blocktime)) 3052 if (expect_false (waittime < timeout_blocktime))
2156 waittime = timeout_blocktime; 3053 waittime = timeout_blocktime;
3054
3055 /* at this point, we NEED to wait, so we have to ensure */
3056 /* to pass a minimum nonzero value to the backend */
3057 if (expect_false (waittime < backend_mintime))
3058 waittime = backend_mintime;
2157 3059
2158 /* extra check because io_blocktime is commonly 0 */ 3060 /* extra check because io_blocktime is commonly 0 */
2159 if (expect_false (io_blocktime)) 3061 if (expect_false (io_blocktime))
2160 { 3062 {
2161 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3063 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2162 3064
2163 if (sleeptime > waittime - backend_fudge) 3065 if (sleeptime > waittime - backend_mintime)
2164 sleeptime = waittime - backend_fudge; 3066 sleeptime = waittime - backend_mintime;
2165 3067
2166 if (expect_true (sleeptime > 0.)) 3068 if (expect_true (sleeptime > 0.))
2167 { 3069 {
2168 ev_sleep (sleeptime); 3070 ev_sleep (sleeptime);
2169 waittime -= sleeptime; 3071 waittime -= sleeptime;
2170 } 3072 }
2171 } 3073 }
2172 } 3074 }
2173 3075
2174#if EV_MINIMAL < 2 3076#if EV_FEATURE_API
2175 ++loop_count; 3077 ++loop_count;
2176#endif 3078#endif
3079 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2177 backend_poll (EV_A_ waittime); 3080 backend_poll (EV_A_ waittime);
3081 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3082
3083 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3084
3085 if (pipe_write_skipped)
3086 {
3087 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3088 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3089 }
3090
2178 3091
2179 /* update ev_rt_now, do magic */ 3092 /* update ev_rt_now, do magic */
2180 time_update (EV_A_ waittime + sleeptime); 3093 time_update (EV_A_ waittime + sleeptime);
2181 } 3094 }
2182 3095
… …
2189#if EV_IDLE_ENABLE 3102#if EV_IDLE_ENABLE
2190 /* queue idle watchers unless other events are pending */ 3103 /* queue idle watchers unless other events are pending */
2191 idle_reify (EV_A); 3104 idle_reify (EV_A);
2192#endif 3105#endif
2193 3106
3107#if EV_CHECK_ENABLE
2194 /* queue check watchers, to be executed first */ 3108 /* queue check watchers, to be executed first */
2195 if (expect_false (checkcnt)) 3109 if (expect_false (checkcnt))
2196 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3110 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3111#endif
2197 3112
2198 EV_INVOKE_PENDING; 3113 EV_INVOKE_PENDING;
2199 } 3114 }
2200 while (expect_true ( 3115 while (expect_true (
2201 activecnt 3116 activecnt
2202 && !loop_done 3117 && !loop_done
2203 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3118 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2204 )); 3119 ));
2205 3120
2206 if (loop_done == EVUNLOOP_ONE) 3121 if (loop_done == EVBREAK_ONE)
2207 loop_done = EVUNLOOP_CANCEL; 3122 loop_done = EVBREAK_CANCEL;
2208 3123
2209#if EV_MINIMAL < 2 3124#if EV_FEATURE_API
2210 --loop_depth; 3125 --loop_depth;
2211#endif 3126#endif
3127
3128 return activecnt;
2212} 3129}
2213 3130
2214void 3131void
2215ev_unloop (EV_P_ int how) 3132ev_break (EV_P_ int how) EV_THROW
2216{ 3133{
2217 loop_done = how; 3134 loop_done = how;
2218} 3135}
2219 3136
2220void 3137void
2221ev_ref (EV_P) 3138ev_ref (EV_P) EV_THROW
2222{ 3139{
2223 ++activecnt; 3140 ++activecnt;
2224} 3141}
2225 3142
2226void 3143void
2227ev_unref (EV_P) 3144ev_unref (EV_P) EV_THROW
2228{ 3145{
2229 --activecnt; 3146 --activecnt;
2230} 3147}
2231 3148
2232void 3149void
2233ev_now_update (EV_P) 3150ev_now_update (EV_P) EV_THROW
2234{ 3151{
2235 time_update (EV_A_ 1e100); 3152 time_update (EV_A_ 1e100);
2236} 3153}
2237 3154
2238void 3155void
2239ev_suspend (EV_P) 3156ev_suspend (EV_P) EV_THROW
2240{ 3157{
2241 ev_now_update (EV_A); 3158 ev_now_update (EV_A);
2242} 3159}
2243 3160
2244void 3161void
2245ev_resume (EV_P) 3162ev_resume (EV_P) EV_THROW
2246{ 3163{
2247 ev_tstamp mn_prev = mn_now; 3164 ev_tstamp mn_prev = mn_now;
2248 3165
2249 ev_now_update (EV_A); 3166 ev_now_update (EV_A);
2250 timers_reschedule (EV_A_ mn_now - mn_prev); 3167 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2267inline_size void 3184inline_size void
2268wlist_del (WL *head, WL elem) 3185wlist_del (WL *head, WL elem)
2269{ 3186{
2270 while (*head) 3187 while (*head)
2271 { 3188 {
2272 if (*head == elem) 3189 if (expect_true (*head == elem))
2273 { 3190 {
2274 *head = elem->next; 3191 *head = elem->next;
2275 return; 3192 break;
2276 } 3193 }
2277 3194
2278 head = &(*head)->next; 3195 head = &(*head)->next;
2279 } 3196 }
2280} 3197}
… …
2289 w->pending = 0; 3206 w->pending = 0;
2290 } 3207 }
2291} 3208}
2292 3209
2293int 3210int
2294ev_clear_pending (EV_P_ void *w) 3211ev_clear_pending (EV_P_ void *w) EV_THROW
2295{ 3212{
2296 W w_ = (W)w; 3213 W w_ = (W)w;
2297 int pending = w_->pending; 3214 int pending = w_->pending;
2298 3215
2299 if (expect_true (pending)) 3216 if (expect_true (pending))
… …
2332} 3249}
2333 3250
2334/*****************************************************************************/ 3251/*****************************************************************************/
2335 3252
2336void noinline 3253void noinline
2337ev_io_start (EV_P_ ev_io *w) 3254ev_io_start (EV_P_ ev_io *w) EV_THROW
2338{ 3255{
2339 int fd = w->fd; 3256 int fd = w->fd;
2340 3257
2341 if (expect_false (ev_is_active (w))) 3258 if (expect_false (ev_is_active (w)))
2342 return; 3259 return;
2343 3260
2344 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3261 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)))); 3262 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2346 3263
2347 EV_FREQUENT_CHECK; 3264 EV_FREQUENT_CHECK;
2348 3265
2349 ev_start (EV_A_ (W)w, 1); 3266 ev_start (EV_A_ (W)w, 1);
2350 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3267 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2351 wlist_add (&anfds[fd].head, (WL)w); 3268 wlist_add (&anfds[fd].head, (WL)w);
2352 3269
3270 /* common bug, apparently */
3271 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3272
2353 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3273 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2354 w->events &= ~EV__IOFDSET; 3274 w->events &= ~EV__IOFDSET;
2355 3275
2356 EV_FREQUENT_CHECK; 3276 EV_FREQUENT_CHECK;
2357} 3277}
2358 3278
2359void noinline 3279void noinline
2360ev_io_stop (EV_P_ ev_io *w) 3280ev_io_stop (EV_P_ ev_io *w) EV_THROW
2361{ 3281{
2362 clear_pending (EV_A_ (W)w); 3282 clear_pending (EV_A_ (W)w);
2363 if (expect_false (!ev_is_active (w))) 3283 if (expect_false (!ev_is_active (w)))
2364 return; 3284 return;
2365 3285
… …
2368 EV_FREQUENT_CHECK; 3288 EV_FREQUENT_CHECK;
2369 3289
2370 wlist_del (&anfds[w->fd].head, (WL)w); 3290 wlist_del (&anfds[w->fd].head, (WL)w);
2371 ev_stop (EV_A_ (W)w); 3291 ev_stop (EV_A_ (W)w);
2372 3292
2373 fd_change (EV_A_ w->fd, 1); 3293 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2374 3294
2375 EV_FREQUENT_CHECK; 3295 EV_FREQUENT_CHECK;
2376} 3296}
2377 3297
2378void noinline 3298void noinline
2379ev_timer_start (EV_P_ ev_timer *w) 3299ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2380{ 3300{
2381 if (expect_false (ev_is_active (w))) 3301 if (expect_false (ev_is_active (w)))
2382 return; 3302 return;
2383 3303
2384 ev_at (w) += mn_now; 3304 ev_at (w) += mn_now;
… …
2398 3318
2399 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3319 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2400} 3320}
2401 3321
2402void noinline 3322void noinline
2403ev_timer_stop (EV_P_ ev_timer *w) 3323ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2404{ 3324{
2405 clear_pending (EV_A_ (W)w); 3325 clear_pending (EV_A_ (W)w);
2406 if (expect_false (!ev_is_active (w))) 3326 if (expect_false (!ev_is_active (w)))
2407 return; 3327 return;
2408 3328
… …
2420 timers [active] = timers [timercnt + HEAP0]; 3340 timers [active] = timers [timercnt + HEAP0];
2421 adjustheap (timers, timercnt, active); 3341 adjustheap (timers, timercnt, active);
2422 } 3342 }
2423 } 3343 }
2424 3344
2425 EV_FREQUENT_CHECK;
2426
2427 ev_at (w) -= mn_now; 3345 ev_at (w) -= mn_now;
2428 3346
2429 ev_stop (EV_A_ (W)w); 3347 ev_stop (EV_A_ (W)w);
3348
3349 EV_FREQUENT_CHECK;
2430} 3350}
2431 3351
2432void noinline 3352void noinline
2433ev_timer_again (EV_P_ ev_timer *w) 3353ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2434{ 3354{
2435 EV_FREQUENT_CHECK; 3355 EV_FREQUENT_CHECK;
3356
3357 clear_pending (EV_A_ (W)w);
2436 3358
2437 if (ev_is_active (w)) 3359 if (ev_is_active (w))
2438 { 3360 {
2439 if (w->repeat) 3361 if (w->repeat)
2440 { 3362 {
… …
2452 } 3374 }
2453 3375
2454 EV_FREQUENT_CHECK; 3376 EV_FREQUENT_CHECK;
2455} 3377}
2456 3378
3379ev_tstamp
3380ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3381{
3382 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3383}
3384
2457#if EV_PERIODIC_ENABLE 3385#if EV_PERIODIC_ENABLE
2458void noinline 3386void noinline
2459ev_periodic_start (EV_P_ ev_periodic *w) 3387ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2460{ 3388{
2461 if (expect_false (ev_is_active (w))) 3389 if (expect_false (ev_is_active (w)))
2462 return; 3390 return;
2463 3391
2464 if (w->reschedule_cb) 3392 if (w->reschedule_cb)
2465 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3393 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2466 else if (w->interval) 3394 else if (w->interval)
2467 { 3395 {
2468 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3396 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 */ 3397 periodic_recalc (EV_A_ w);
2470 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2471 } 3398 }
2472 else 3399 else
2473 ev_at (w) = w->offset; 3400 ev_at (w) = w->offset;
2474 3401
2475 EV_FREQUENT_CHECK; 3402 EV_FREQUENT_CHECK;
… …
2485 3412
2486 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3413 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2487} 3414}
2488 3415
2489void noinline 3416void noinline
2490ev_periodic_stop (EV_P_ ev_periodic *w) 3417ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2491{ 3418{
2492 clear_pending (EV_A_ (W)w); 3419 clear_pending (EV_A_ (W)w);
2493 if (expect_false (!ev_is_active (w))) 3420 if (expect_false (!ev_is_active (w)))
2494 return; 3421 return;
2495 3422
… …
2507 periodics [active] = periodics [periodiccnt + HEAP0]; 3434 periodics [active] = periodics [periodiccnt + HEAP0];
2508 adjustheap (periodics, periodiccnt, active); 3435 adjustheap (periodics, periodiccnt, active);
2509 } 3436 }
2510 } 3437 }
2511 3438
2512 EV_FREQUENT_CHECK;
2513
2514 ev_stop (EV_A_ (W)w); 3439 ev_stop (EV_A_ (W)w);
3440
3441 EV_FREQUENT_CHECK;
2515} 3442}
2516 3443
2517void noinline 3444void noinline
2518ev_periodic_again (EV_P_ ev_periodic *w) 3445ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2519{ 3446{
2520 /* TODO: use adjustheap and recalculation */ 3447 /* TODO: use adjustheap and recalculation */
2521 ev_periodic_stop (EV_A_ w); 3448 ev_periodic_stop (EV_A_ w);
2522 ev_periodic_start (EV_A_ w); 3449 ev_periodic_start (EV_A_ w);
2523} 3450}
… …
2525 3452
2526#ifndef SA_RESTART 3453#ifndef SA_RESTART
2527# define SA_RESTART 0 3454# define SA_RESTART 0
2528#endif 3455#endif
2529 3456
3457#if EV_SIGNAL_ENABLE
3458
2530void noinline 3459void noinline
2531ev_signal_start (EV_P_ ev_signal *w) 3460ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2532{ 3461{
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))) 3462 if (expect_false (ev_is_active (w)))
2537 return; 3463 return;
2538 3464
2539 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3465 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2540 3466
2541 evpipe_init (EV_A); 3467#if EV_MULTIPLICITY
3468 assert (("libev: a signal must not be attached to two different loops",
3469 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2542 3470
2543 EV_FREQUENT_CHECK; 3471 signals [w->signum - 1].loop = EV_A;
3472#endif
2544 3473
3474 EV_FREQUENT_CHECK;
3475
3476#if EV_USE_SIGNALFD
3477 if (sigfd == -2)
2545 { 3478 {
2546#ifndef _WIN32 3479 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2547 sigset_t full, prev; 3480 if (sigfd < 0 && errno == EINVAL)
2548 sigfillset (&full); 3481 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2549 sigprocmask (SIG_SETMASK, &full, &prev);
2550#endif
2551 3482
2552 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3483 if (sigfd >= 0)
3484 {
3485 fd_intern (sigfd); /* doing it twice will not hurt */
2553 3486
2554#ifndef _WIN32 3487 sigemptyset (&sigfd_set);
2555 sigprocmask (SIG_SETMASK, &prev, 0); 3488
2556#endif 3489 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3490 ev_set_priority (&sigfd_w, EV_MAXPRI);
3491 ev_io_start (EV_A_ &sigfd_w);
3492 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3493 }
2557 } 3494 }
3495
3496 if (sigfd >= 0)
3497 {
3498 /* TODO: check .head */
3499 sigaddset (&sigfd_set, w->signum);
3500 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3501
3502 signalfd (sigfd, &sigfd_set, 0);
3503 }
3504#endif
2558 3505
2559 ev_start (EV_A_ (W)w, 1); 3506 ev_start (EV_A_ (W)w, 1);
2560 wlist_add (&signals [w->signum - 1].head, (WL)w); 3507 wlist_add (&signals [w->signum - 1].head, (WL)w);
2561 3508
2562 if (!((WL)w)->next) 3509 if (!((WL)w)->next)
3510# if EV_USE_SIGNALFD
3511 if (sigfd < 0) /*TODO*/
3512# endif
2563 { 3513 {
2564#if _WIN32 3514# ifdef _WIN32
3515 evpipe_init (EV_A);
3516
2565 signal (w->signum, ev_sighandler); 3517 signal (w->signum, ev_sighandler);
2566#else 3518# else
2567 struct sigaction sa; 3519 struct sigaction sa;
3520
3521 evpipe_init (EV_A);
3522
2568 sa.sa_handler = ev_sighandler; 3523 sa.sa_handler = ev_sighandler;
2569 sigfillset (&sa.sa_mask); 3524 sigfillset (&sa.sa_mask);
2570 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3525 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2571 sigaction (w->signum, &sa, 0); 3526 sigaction (w->signum, &sa, 0);
3527
3528 if (origflags & EVFLAG_NOSIGMASK)
3529 {
3530 sigemptyset (&sa.sa_mask);
3531 sigaddset (&sa.sa_mask, w->signum);
3532 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3533 }
2572#endif 3534#endif
2573 } 3535 }
2574 3536
2575 EV_FREQUENT_CHECK; 3537 EV_FREQUENT_CHECK;
2576} 3538}
2577 3539
2578void noinline 3540void noinline
2579ev_signal_stop (EV_P_ ev_signal *w) 3541ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2580{ 3542{
2581 clear_pending (EV_A_ (W)w); 3543 clear_pending (EV_A_ (W)w);
2582 if (expect_false (!ev_is_active (w))) 3544 if (expect_false (!ev_is_active (w)))
2583 return; 3545 return;
2584 3546
… …
2586 3548
2587 wlist_del (&signals [w->signum - 1].head, (WL)w); 3549 wlist_del (&signals [w->signum - 1].head, (WL)w);
2588 ev_stop (EV_A_ (W)w); 3550 ev_stop (EV_A_ (W)w);
2589 3551
2590 if (!signals [w->signum - 1].head) 3552 if (!signals [w->signum - 1].head)
3553 {
3554#if EV_MULTIPLICITY
3555 signals [w->signum - 1].loop = 0; /* unattach from signal */
3556#endif
3557#if EV_USE_SIGNALFD
3558 if (sigfd >= 0)
3559 {
3560 sigset_t ss;
3561
3562 sigemptyset (&ss);
3563 sigaddset (&ss, w->signum);
3564 sigdelset (&sigfd_set, w->signum);
3565
3566 signalfd (sigfd, &sigfd_set, 0);
3567 sigprocmask (SIG_UNBLOCK, &ss, 0);
3568 }
3569 else
3570#endif
2591 signal (w->signum, SIG_DFL); 3571 signal (w->signum, SIG_DFL);
3572 }
2592 3573
2593 EV_FREQUENT_CHECK; 3574 EV_FREQUENT_CHECK;
2594} 3575}
3576
3577#endif
3578
3579#if EV_CHILD_ENABLE
2595 3580
2596void 3581void
2597ev_child_start (EV_P_ ev_child *w) 3582ev_child_start (EV_P_ ev_child *w) EV_THROW
2598{ 3583{
2599#if EV_MULTIPLICITY 3584#if EV_MULTIPLICITY
2600 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3585 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2601#endif 3586#endif
2602 if (expect_false (ev_is_active (w))) 3587 if (expect_false (ev_is_active (w)))
2603 return; 3588 return;
2604 3589
2605 EV_FREQUENT_CHECK; 3590 EV_FREQUENT_CHECK;
2606 3591
2607 ev_start (EV_A_ (W)w, 1); 3592 ev_start (EV_A_ (W)w, 1);
2608 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3593 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2609 3594
2610 EV_FREQUENT_CHECK; 3595 EV_FREQUENT_CHECK;
2611} 3596}
2612 3597
2613void 3598void
2614ev_child_stop (EV_P_ ev_child *w) 3599ev_child_stop (EV_P_ ev_child *w) EV_THROW
2615{ 3600{
2616 clear_pending (EV_A_ (W)w); 3601 clear_pending (EV_A_ (W)w);
2617 if (expect_false (!ev_is_active (w))) 3602 if (expect_false (!ev_is_active (w)))
2618 return; 3603 return;
2619 3604
2620 EV_FREQUENT_CHECK; 3605 EV_FREQUENT_CHECK;
2621 3606
2622 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3607 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2623 ev_stop (EV_A_ (W)w); 3608 ev_stop (EV_A_ (W)w);
2624 3609
2625 EV_FREQUENT_CHECK; 3610 EV_FREQUENT_CHECK;
2626} 3611}
3612
3613#endif
2627 3614
2628#if EV_STAT_ENABLE 3615#if EV_STAT_ENABLE
2629 3616
2630# ifdef _WIN32 3617# ifdef _WIN32
2631# undef lstat 3618# undef lstat
… …
2637#define MIN_STAT_INTERVAL 0.1074891 3624#define MIN_STAT_INTERVAL 0.1074891
2638 3625
2639static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3626static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2640 3627
2641#if EV_USE_INOTIFY 3628#if EV_USE_INOTIFY
2642# define EV_INOTIFY_BUFSIZE 8192 3629
3630/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3631# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2643 3632
2644static void noinline 3633static void noinline
2645infy_add (EV_P_ ev_stat *w) 3634infy_add (EV_P_ ev_stat *w)
2646{ 3635{
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); 3636 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);
2648 3637
2649 if (w->wd < 0) 3638 if (w->wd >= 0)
3639 {
3640 struct statfs sfs;
3641
3642 /* now local changes will be tracked by inotify, but remote changes won't */
3643 /* unless the filesystem is known to be local, we therefore still poll */
3644 /* also do poll on <2.6.25, but with normal frequency */
3645
3646 if (!fs_2625)
3647 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3648 else if (!statfs (w->path, &sfs)
3649 && (sfs.f_type == 0x1373 /* devfs */
3650 || sfs.f_type == 0xEF53 /* ext2/3 */
3651 || sfs.f_type == 0x3153464a /* jfs */
3652 || sfs.f_type == 0x52654973 /* reiser3 */
3653 || sfs.f_type == 0x01021994 /* tempfs */
3654 || sfs.f_type == 0x58465342 /* xfs */))
3655 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3656 else
3657 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2650 { 3658 }
3659 else
3660 {
3661 /* can't use inotify, continue to stat */
2651 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3662 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 3663
2654 /* monitor some parent directory for speedup hints */ 3664 /* 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, */ 3665 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2656 /* but an efficiency issue only */ 3666 /* but an efficiency issue only */
2657 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3667 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2658 { 3668 {
2659 char path [4096]; 3669 char path [4096];
… …
2669 if (!pend || pend == path) 3679 if (!pend || pend == path)
2670 break; 3680 break;
2671 3681
2672 *pend = 0; 3682 *pend = 0;
2673 w->wd = inotify_add_watch (fs_fd, path, mask); 3683 w->wd = inotify_add_watch (fs_fd, path, mask);
2674 } 3684 }
2675 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3685 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2676 } 3686 }
2677 } 3687 }
2678 3688
2679 if (w->wd >= 0) 3689 if (w->wd >= 0)
2680 {
2681 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3690 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2682 3691
2683 /* now local changes will be tracked by inotify, but remote changes won't */ 3692 /* now re-arm timer, if required */
2684 /* unless the filesystem it known to be local, we therefore still poll */ 3693 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); 3694 ev_timer_again (EV_A_ &w->timer);
2699 } 3695 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2700} 3696}
2701 3697
2702static void noinline 3698static void noinline
2703infy_del (EV_P_ ev_stat *w) 3699infy_del (EV_P_ ev_stat *w)
2704{ 3700{
… …
2707 3703
2708 if (wd < 0) 3704 if (wd < 0)
2709 return; 3705 return;
2710 3706
2711 w->wd = -2; 3707 w->wd = -2;
2712 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3708 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2713 wlist_del (&fs_hash [slot].head, (WL)w); 3709 wlist_del (&fs_hash [slot].head, (WL)w);
2714 3710
2715 /* remove this watcher, if others are watching it, they will rearm */ 3711 /* remove this watcher, if others are watching it, they will rearm */
2716 inotify_rm_watch (fs_fd, wd); 3712 inotify_rm_watch (fs_fd, wd);
2717} 3713}
… …
2719static void noinline 3715static void noinline
2720infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3716infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2721{ 3717{
2722 if (slot < 0) 3718 if (slot < 0)
2723 /* overflow, need to check for all hash slots */ 3719 /* overflow, need to check for all hash slots */
2724 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3720 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2725 infy_wd (EV_A_ slot, wd, ev); 3721 infy_wd (EV_A_ slot, wd, ev);
2726 else 3722 else
2727 { 3723 {
2728 WL w_; 3724 WL w_;
2729 3725
2730 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3726 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2731 { 3727 {
2732 ev_stat *w = (ev_stat *)w_; 3728 ev_stat *w = (ev_stat *)w_;
2733 w_ = w_->next; /* lets us remove this watcher and all before it */ 3729 w_ = w_->next; /* lets us remove this watcher and all before it */
2734 3730
2735 if (w->wd == wd || wd == -1) 3731 if (w->wd == wd || wd == -1)
2736 { 3732 {
2737 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3733 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2738 { 3734 {
2739 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3735 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2740 w->wd = -1; 3736 w->wd = -1;
2741 infy_add (EV_A_ w); /* re-add, no matter what */ 3737 infy_add (EV_A_ w); /* re-add, no matter what */
2742 } 3738 }
2743 3739
2744 stat_timer_cb (EV_A_ &w->timer, 0); 3740 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2749 3745
2750static void 3746static void
2751infy_cb (EV_P_ ev_io *w, int revents) 3747infy_cb (EV_P_ ev_io *w, int revents)
2752{ 3748{
2753 char buf [EV_INOTIFY_BUFSIZE]; 3749 char buf [EV_INOTIFY_BUFSIZE];
2754 struct inotify_event *ev = (struct inotify_event *)buf;
2755 int ofs; 3750 int ofs;
2756 int len = read (fs_fd, buf, sizeof (buf)); 3751 int len = read (fs_fd, buf, sizeof (buf));
2757 3752
2758 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3753 for (ofs = 0; ofs < len; )
3754 {
3755 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2759 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3756 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3757 ofs += sizeof (struct inotify_event) + ev->len;
3758 }
2760} 3759}
2761 3760
2762inline_size void 3761inline_size void ecb_cold
2763check_2625 (EV_P) 3762ev_check_2625 (EV_P)
2764{ 3763{
2765 /* kernels < 2.6.25 are borked 3764 /* kernels < 2.6.25 are borked
2766 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3765 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2767 */ 3766 */
2768 struct utsname buf; 3767 if (ev_linux_version () < 0x020619)
2769 int major, minor, micro;
2770
2771 if (uname (&buf))
2772 return; 3768 return;
2773 3769
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; 3770 fs_2625 = 1;
3771}
3772
3773inline_size int
3774infy_newfd (void)
3775{
3776#if defined IN_CLOEXEC && defined IN_NONBLOCK
3777 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3778 if (fd >= 0)
3779 return fd;
3780#endif
3781 return inotify_init ();
2783} 3782}
2784 3783
2785inline_size void 3784inline_size void
2786infy_init (EV_P) 3785infy_init (EV_P)
2787{ 3786{
2788 if (fs_fd != -2) 3787 if (fs_fd != -2)
2789 return; 3788 return;
2790 3789
2791 fs_fd = -1; 3790 fs_fd = -1;
2792 3791
2793 check_2625 (EV_A); 3792 ev_check_2625 (EV_A);
2794 3793
2795 fs_fd = inotify_init (); 3794 fs_fd = infy_newfd ();
2796 3795
2797 if (fs_fd >= 0) 3796 if (fs_fd >= 0)
2798 { 3797 {
3798 fd_intern (fs_fd);
2799 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3799 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2800 ev_set_priority (&fs_w, EV_MAXPRI); 3800 ev_set_priority (&fs_w, EV_MAXPRI);
2801 ev_io_start (EV_A_ &fs_w); 3801 ev_io_start (EV_A_ &fs_w);
3802 ev_unref (EV_A);
2802 } 3803 }
2803} 3804}
2804 3805
2805inline_size void 3806inline_size void
2806infy_fork (EV_P) 3807infy_fork (EV_P)
… …
2808 int slot; 3809 int slot;
2809 3810
2810 if (fs_fd < 0) 3811 if (fs_fd < 0)
2811 return; 3812 return;
2812 3813
3814 ev_ref (EV_A);
3815 ev_io_stop (EV_A_ &fs_w);
2813 close (fs_fd); 3816 close (fs_fd);
2814 fs_fd = inotify_init (); 3817 fs_fd = infy_newfd ();
2815 3818
3819 if (fs_fd >= 0)
3820 {
3821 fd_intern (fs_fd);
3822 ev_io_set (&fs_w, fs_fd, EV_READ);
3823 ev_io_start (EV_A_ &fs_w);
3824 ev_unref (EV_A);
3825 }
3826
2816 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3827 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2817 { 3828 {
2818 WL w_ = fs_hash [slot].head; 3829 WL w_ = fs_hash [slot].head;
2819 fs_hash [slot].head = 0; 3830 fs_hash [slot].head = 0;
2820 3831
2821 while (w_) 3832 while (w_)
… …
2826 w->wd = -1; 3837 w->wd = -1;
2827 3838
2828 if (fs_fd >= 0) 3839 if (fs_fd >= 0)
2829 infy_add (EV_A_ w); /* re-add, no matter what */ 3840 infy_add (EV_A_ w); /* re-add, no matter what */
2830 else 3841 else
3842 {
3843 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3844 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2831 ev_timer_again (EV_A_ &w->timer); 3845 ev_timer_again (EV_A_ &w->timer);
3846 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3847 }
2832 } 3848 }
2833 } 3849 }
2834} 3850}
2835 3851
2836#endif 3852#endif
… …
2840#else 3856#else
2841# define EV_LSTAT(p,b) lstat (p, b) 3857# define EV_LSTAT(p,b) lstat (p, b)
2842#endif 3858#endif
2843 3859
2844void 3860void
2845ev_stat_stat (EV_P_ ev_stat *w) 3861ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2846{ 3862{
2847 if (lstat (w->path, &w->attr) < 0) 3863 if (lstat (w->path, &w->attr) < 0)
2848 w->attr.st_nlink = 0; 3864 w->attr.st_nlink = 0;
2849 else if (!w->attr.st_nlink) 3865 else if (!w->attr.st_nlink)
2850 w->attr.st_nlink = 1; 3866 w->attr.st_nlink = 1;
… …
2853static void noinline 3869static void noinline
2854stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3870stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2855{ 3871{
2856 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3872 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2857 3873
2858 /* we copy this here each the time so that */ 3874 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); 3875 ev_stat_stat (EV_A_ w);
2862 3876
2863 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3877 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2864 if ( 3878 if (
2865 w->prev.st_dev != w->attr.st_dev 3879 prev.st_dev != w->attr.st_dev
2866 || w->prev.st_ino != w->attr.st_ino 3880 || prev.st_ino != w->attr.st_ino
2867 || w->prev.st_mode != w->attr.st_mode 3881 || prev.st_mode != w->attr.st_mode
2868 || w->prev.st_nlink != w->attr.st_nlink 3882 || prev.st_nlink != w->attr.st_nlink
2869 || w->prev.st_uid != w->attr.st_uid 3883 || prev.st_uid != w->attr.st_uid
2870 || w->prev.st_gid != w->attr.st_gid 3884 || prev.st_gid != w->attr.st_gid
2871 || w->prev.st_rdev != w->attr.st_rdev 3885 || prev.st_rdev != w->attr.st_rdev
2872 || w->prev.st_size != w->attr.st_size 3886 || prev.st_size != w->attr.st_size
2873 || w->prev.st_atime != w->attr.st_atime 3887 || prev.st_atime != w->attr.st_atime
2874 || w->prev.st_mtime != w->attr.st_mtime 3888 || prev.st_mtime != w->attr.st_mtime
2875 || w->prev.st_ctime != w->attr.st_ctime 3889 || prev.st_ctime != w->attr.st_ctime
2876 ) { 3890 ) {
3891 /* we only update w->prev on actual differences */
3892 /* in case we test more often than invoke the callback, */
3893 /* to ensure that prev is always different to attr */
3894 w->prev = prev;
3895
2877 #if EV_USE_INOTIFY 3896 #if EV_USE_INOTIFY
2878 if (fs_fd >= 0) 3897 if (fs_fd >= 0)
2879 { 3898 {
2880 infy_del (EV_A_ w); 3899 infy_del (EV_A_ w);
2881 infy_add (EV_A_ w); 3900 infy_add (EV_A_ w);
… …
2886 ev_feed_event (EV_A_ w, EV_STAT); 3905 ev_feed_event (EV_A_ w, EV_STAT);
2887 } 3906 }
2888} 3907}
2889 3908
2890void 3909void
2891ev_stat_start (EV_P_ ev_stat *w) 3910ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2892{ 3911{
2893 if (expect_false (ev_is_active (w))) 3912 if (expect_false (ev_is_active (w)))
2894 return; 3913 return;
2895 3914
2896 ev_stat_stat (EV_A_ w); 3915 ev_stat_stat (EV_A_ w);
… …
2906 3925
2907 if (fs_fd >= 0) 3926 if (fs_fd >= 0)
2908 infy_add (EV_A_ w); 3927 infy_add (EV_A_ w);
2909 else 3928 else
2910#endif 3929#endif
3930 {
2911 ev_timer_again (EV_A_ &w->timer); 3931 ev_timer_again (EV_A_ &w->timer);
3932 ev_unref (EV_A);
3933 }
2912 3934
2913 ev_start (EV_A_ (W)w, 1); 3935 ev_start (EV_A_ (W)w, 1);
2914 3936
2915 EV_FREQUENT_CHECK; 3937 EV_FREQUENT_CHECK;
2916} 3938}
2917 3939
2918void 3940void
2919ev_stat_stop (EV_P_ ev_stat *w) 3941ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2920{ 3942{
2921 clear_pending (EV_A_ (W)w); 3943 clear_pending (EV_A_ (W)w);
2922 if (expect_false (!ev_is_active (w))) 3944 if (expect_false (!ev_is_active (w)))
2923 return; 3945 return;
2924 3946
2925 EV_FREQUENT_CHECK; 3947 EV_FREQUENT_CHECK;
2926 3948
2927#if EV_USE_INOTIFY 3949#if EV_USE_INOTIFY
2928 infy_del (EV_A_ w); 3950 infy_del (EV_A_ w);
2929#endif 3951#endif
3952
3953 if (ev_is_active (&w->timer))
3954 {
3955 ev_ref (EV_A);
2930 ev_timer_stop (EV_A_ &w->timer); 3956 ev_timer_stop (EV_A_ &w->timer);
3957 }
2931 3958
2932 ev_stop (EV_A_ (W)w); 3959 ev_stop (EV_A_ (W)w);
2933 3960
2934 EV_FREQUENT_CHECK; 3961 EV_FREQUENT_CHECK;
2935} 3962}
2936#endif 3963#endif
2937 3964
2938#if EV_IDLE_ENABLE 3965#if EV_IDLE_ENABLE
2939void 3966void
2940ev_idle_start (EV_P_ ev_idle *w) 3967ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2941{ 3968{
2942 if (expect_false (ev_is_active (w))) 3969 if (expect_false (ev_is_active (w)))
2943 return; 3970 return;
2944 3971
2945 pri_adjust (EV_A_ (W)w); 3972 pri_adjust (EV_A_ (W)w);
… …
2958 3985
2959 EV_FREQUENT_CHECK; 3986 EV_FREQUENT_CHECK;
2960} 3987}
2961 3988
2962void 3989void
2963ev_idle_stop (EV_P_ ev_idle *w) 3990ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2964{ 3991{
2965 clear_pending (EV_A_ (W)w); 3992 clear_pending (EV_A_ (W)w);
2966 if (expect_false (!ev_is_active (w))) 3993 if (expect_false (!ev_is_active (w)))
2967 return; 3994 return;
2968 3995
… …
2980 4007
2981 EV_FREQUENT_CHECK; 4008 EV_FREQUENT_CHECK;
2982} 4009}
2983#endif 4010#endif
2984 4011
4012#if EV_PREPARE_ENABLE
2985void 4013void
2986ev_prepare_start (EV_P_ ev_prepare *w) 4014ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2987{ 4015{
2988 if (expect_false (ev_is_active (w))) 4016 if (expect_false (ev_is_active (w)))
2989 return; 4017 return;
2990 4018
2991 EV_FREQUENT_CHECK; 4019 EV_FREQUENT_CHECK;
… …
2996 4024
2997 EV_FREQUENT_CHECK; 4025 EV_FREQUENT_CHECK;
2998} 4026}
2999 4027
3000void 4028void
3001ev_prepare_stop (EV_P_ ev_prepare *w) 4029ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3002{ 4030{
3003 clear_pending (EV_A_ (W)w); 4031 clear_pending (EV_A_ (W)w);
3004 if (expect_false (!ev_is_active (w))) 4032 if (expect_false (!ev_is_active (w)))
3005 return; 4033 return;
3006 4034
… …
3015 4043
3016 ev_stop (EV_A_ (W)w); 4044 ev_stop (EV_A_ (W)w);
3017 4045
3018 EV_FREQUENT_CHECK; 4046 EV_FREQUENT_CHECK;
3019} 4047}
4048#endif
3020 4049
4050#if EV_CHECK_ENABLE
3021void 4051void
3022ev_check_start (EV_P_ ev_check *w) 4052ev_check_start (EV_P_ ev_check *w) EV_THROW
3023{ 4053{
3024 if (expect_false (ev_is_active (w))) 4054 if (expect_false (ev_is_active (w)))
3025 return; 4055 return;
3026 4056
3027 EV_FREQUENT_CHECK; 4057 EV_FREQUENT_CHECK;
… …
3032 4062
3033 EV_FREQUENT_CHECK; 4063 EV_FREQUENT_CHECK;
3034} 4064}
3035 4065
3036void 4066void
3037ev_check_stop (EV_P_ ev_check *w) 4067ev_check_stop (EV_P_ ev_check *w) EV_THROW
3038{ 4068{
3039 clear_pending (EV_A_ (W)w); 4069 clear_pending (EV_A_ (W)w);
3040 if (expect_false (!ev_is_active (w))) 4070 if (expect_false (!ev_is_active (w)))
3041 return; 4071 return;
3042 4072
… …
3051 4081
3052 ev_stop (EV_A_ (W)w); 4082 ev_stop (EV_A_ (W)w);
3053 4083
3054 EV_FREQUENT_CHECK; 4084 EV_FREQUENT_CHECK;
3055} 4085}
4086#endif
3056 4087
3057#if EV_EMBED_ENABLE 4088#if EV_EMBED_ENABLE
3058void noinline 4089void noinline
3059ev_embed_sweep (EV_P_ ev_embed *w) 4090ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3060{ 4091{
3061 ev_loop (w->other, EVLOOP_NONBLOCK); 4092 ev_run (w->other, EVRUN_NOWAIT);
3062} 4093}
3063 4094
3064static void 4095static void
3065embed_io_cb (EV_P_ ev_io *io, int revents) 4096embed_io_cb (EV_P_ ev_io *io, int revents)
3066{ 4097{
3067 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4098 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3068 4099
3069 if (ev_cb (w)) 4100 if (ev_cb (w))
3070 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4101 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3071 else 4102 else
3072 ev_loop (w->other, EVLOOP_NONBLOCK); 4103 ev_run (w->other, EVRUN_NOWAIT);
3073} 4104}
3074 4105
3075static void 4106static void
3076embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4107embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3077{ 4108{
3078 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4109 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3079 4110
3080 { 4111 {
3081 struct ev_loop *loop = w->other; 4112 EV_P = w->other;
3082 4113
3083 while (fdchangecnt) 4114 while (fdchangecnt)
3084 { 4115 {
3085 fd_reify (EV_A); 4116 fd_reify (EV_A);
3086 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4117 ev_run (EV_A_ EVRUN_NOWAIT);
3087 } 4118 }
3088 } 4119 }
3089} 4120}
3090 4121
3091static void 4122static void
… …
3094 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4125 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3095 4126
3096 ev_embed_stop (EV_A_ w); 4127 ev_embed_stop (EV_A_ w);
3097 4128
3098 { 4129 {
3099 struct ev_loop *loop = w->other; 4130 EV_P = w->other;
3100 4131
3101 ev_loop_fork (EV_A); 4132 ev_loop_fork (EV_A);
3102 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4133 ev_run (EV_A_ EVRUN_NOWAIT);
3103 } 4134 }
3104 4135
3105 ev_embed_start (EV_A_ w); 4136 ev_embed_start (EV_A_ w);
3106} 4137}
3107 4138
… …
3112 ev_idle_stop (EV_A_ idle); 4143 ev_idle_stop (EV_A_ idle);
3113} 4144}
3114#endif 4145#endif
3115 4146
3116void 4147void
3117ev_embed_start (EV_P_ ev_embed *w) 4148ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3118{ 4149{
3119 if (expect_false (ev_is_active (w))) 4150 if (expect_false (ev_is_active (w)))
3120 return; 4151 return;
3121 4152
3122 { 4153 {
3123 struct ev_loop *loop = w->other; 4154 EV_P = w->other;
3124 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4155 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); 4156 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3126 } 4157 }
3127 4158
3128 EV_FREQUENT_CHECK; 4159 EV_FREQUENT_CHECK;
… …
3143 4174
3144 EV_FREQUENT_CHECK; 4175 EV_FREQUENT_CHECK;
3145} 4176}
3146 4177
3147void 4178void
3148ev_embed_stop (EV_P_ ev_embed *w) 4179ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3149{ 4180{
3150 clear_pending (EV_A_ (W)w); 4181 clear_pending (EV_A_ (W)w);
3151 if (expect_false (!ev_is_active (w))) 4182 if (expect_false (!ev_is_active (w)))
3152 return; 4183 return;
3153 4184
… …
3155 4186
3156 ev_io_stop (EV_A_ &w->io); 4187 ev_io_stop (EV_A_ &w->io);
3157 ev_prepare_stop (EV_A_ &w->prepare); 4188 ev_prepare_stop (EV_A_ &w->prepare);
3158 ev_fork_stop (EV_A_ &w->fork); 4189 ev_fork_stop (EV_A_ &w->fork);
3159 4190
4191 ev_stop (EV_A_ (W)w);
4192
3160 EV_FREQUENT_CHECK; 4193 EV_FREQUENT_CHECK;
3161} 4194}
3162#endif 4195#endif
3163 4196
3164#if EV_FORK_ENABLE 4197#if EV_FORK_ENABLE
3165void 4198void
3166ev_fork_start (EV_P_ ev_fork *w) 4199ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3167{ 4200{
3168 if (expect_false (ev_is_active (w))) 4201 if (expect_false (ev_is_active (w)))
3169 return; 4202 return;
3170 4203
3171 EV_FREQUENT_CHECK; 4204 EV_FREQUENT_CHECK;
… …
3176 4209
3177 EV_FREQUENT_CHECK; 4210 EV_FREQUENT_CHECK;
3178} 4211}
3179 4212
3180void 4213void
3181ev_fork_stop (EV_P_ ev_fork *w) 4214ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3182{ 4215{
3183 clear_pending (EV_A_ (W)w); 4216 clear_pending (EV_A_ (W)w);
3184 if (expect_false (!ev_is_active (w))) 4217 if (expect_false (!ev_is_active (w)))
3185 return; 4218 return;
3186 4219
… …
3197 4230
3198 EV_FREQUENT_CHECK; 4231 EV_FREQUENT_CHECK;
3199} 4232}
3200#endif 4233#endif
3201 4234
4235#if EV_CLEANUP_ENABLE
4236void
4237ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4238{
4239 if (expect_false (ev_is_active (w)))
4240 return;
4241
4242 EV_FREQUENT_CHECK;
4243
4244 ev_start (EV_A_ (W)w, ++cleanupcnt);
4245 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4246 cleanups [cleanupcnt - 1] = w;
4247
4248 /* cleanup watchers should never keep a refcount on the loop */
4249 ev_unref (EV_A);
4250 EV_FREQUENT_CHECK;
4251}
4252
4253void
4254ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4255{
4256 clear_pending (EV_A_ (W)w);
4257 if (expect_false (!ev_is_active (w)))
4258 return;
4259
4260 EV_FREQUENT_CHECK;
4261 ev_ref (EV_A);
4262
4263 {
4264 int active = ev_active (w);
4265
4266 cleanups [active - 1] = cleanups [--cleanupcnt];
4267 ev_active (cleanups [active - 1]) = active;
4268 }
4269
4270 ev_stop (EV_A_ (W)w);
4271
4272 EV_FREQUENT_CHECK;
4273}
4274#endif
4275
3202#if EV_ASYNC_ENABLE 4276#if EV_ASYNC_ENABLE
3203void 4277void
3204ev_async_start (EV_P_ ev_async *w) 4278ev_async_start (EV_P_ ev_async *w) EV_THROW
3205{ 4279{
3206 if (expect_false (ev_is_active (w))) 4280 if (expect_false (ev_is_active (w)))
3207 return; 4281 return;
4282
4283 w->sent = 0;
3208 4284
3209 evpipe_init (EV_A); 4285 evpipe_init (EV_A);
3210 4286
3211 EV_FREQUENT_CHECK; 4287 EV_FREQUENT_CHECK;
3212 4288
… …
3216 4292
3217 EV_FREQUENT_CHECK; 4293 EV_FREQUENT_CHECK;
3218} 4294}
3219 4295
3220void 4296void
3221ev_async_stop (EV_P_ ev_async *w) 4297ev_async_stop (EV_P_ ev_async *w) EV_THROW
3222{ 4298{
3223 clear_pending (EV_A_ (W)w); 4299 clear_pending (EV_A_ (W)w);
3224 if (expect_false (!ev_is_active (w))) 4300 if (expect_false (!ev_is_active (w)))
3225 return; 4301 return;
3226 4302
… …
3237 4313
3238 EV_FREQUENT_CHECK; 4314 EV_FREQUENT_CHECK;
3239} 4315}
3240 4316
3241void 4317void
3242ev_async_send (EV_P_ ev_async *w) 4318ev_async_send (EV_P_ ev_async *w) EV_THROW
3243{ 4319{
3244 w->sent = 1; 4320 w->sent = 1;
3245 evpipe_write (EV_A_ &gotasync); 4321 evpipe_write (EV_A_ &async_pending);
3246} 4322}
3247#endif 4323#endif
3248 4324
3249/*****************************************************************************/ 4325/*****************************************************************************/
3250 4326
… …
3284 4360
3285 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4361 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3286} 4362}
3287 4363
3288void 4364void
3289ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4365ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3290{ 4366{
3291 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4367 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3292 4368
3293 if (expect_false (!once)) 4369 if (expect_false (!once))
3294 { 4370 {
3295 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4371 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3296 return; 4372 return;
3297 } 4373 }
3298 4374
3299 once->cb = cb; 4375 once->cb = cb;
3300 once->arg = arg; 4376 once->arg = arg;
… …
3315} 4391}
3316 4392
3317/*****************************************************************************/ 4393/*****************************************************************************/
3318 4394
3319#if EV_WALK_ENABLE 4395#if EV_WALK_ENABLE
3320void 4396void ecb_cold
3321ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4397ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3322{ 4398{
3323 int i, j; 4399 int i, j;
3324 ev_watcher_list *wl, *wn; 4400 ev_watcher_list *wl, *wn;
3325 4401
3326 if (types & (EV_IO | EV_EMBED)) 4402 if (types & (EV_IO | EV_EMBED))
… …
3369 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4445 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3370#endif 4446#endif
3371 4447
3372#if EV_IDLE_ENABLE 4448#if EV_IDLE_ENABLE
3373 if (types & EV_IDLE) 4449 if (types & EV_IDLE)
3374 for (j = NUMPRI; i--; ) 4450 for (j = NUMPRI; j--; )
3375 for (i = idlecnt [j]; i--; ) 4451 for (i = idlecnt [j]; i--; )
3376 cb (EV_A_ EV_IDLE, idles [j][i]); 4452 cb (EV_A_ EV_IDLE, idles [j][i]);
3377#endif 4453#endif
3378 4454
3379#if EV_FORK_ENABLE 4455#if EV_FORK_ENABLE
… …
3387 if (types & EV_ASYNC) 4463 if (types & EV_ASYNC)
3388 for (i = asynccnt; i--; ) 4464 for (i = asynccnt; i--; )
3389 cb (EV_A_ EV_ASYNC, asyncs [i]); 4465 cb (EV_A_ EV_ASYNC, asyncs [i]);
3390#endif 4466#endif
3391 4467
4468#if EV_PREPARE_ENABLE
3392 if (types & EV_PREPARE) 4469 if (types & EV_PREPARE)
3393 for (i = preparecnt; i--; ) 4470 for (i = preparecnt; i--; )
3394#if EV_EMBED_ENABLE 4471# if EV_EMBED_ENABLE
3395 if (ev_cb (prepares [i]) != embed_prepare_cb) 4472 if (ev_cb (prepares [i]) != embed_prepare_cb)
3396#endif 4473# endif
3397 cb (EV_A_ EV_PREPARE, prepares [i]); 4474 cb (EV_A_ EV_PREPARE, prepares [i]);
4475#endif
3398 4476
4477#if EV_CHECK_ENABLE
3399 if (types & EV_CHECK) 4478 if (types & EV_CHECK)
3400 for (i = checkcnt; i--; ) 4479 for (i = checkcnt; i--; )
3401 cb (EV_A_ EV_CHECK, checks [i]); 4480 cb (EV_A_ EV_CHECK, checks [i]);
4481#endif
3402 4482
4483#if EV_SIGNAL_ENABLE
3403 if (types & EV_SIGNAL) 4484 if (types & EV_SIGNAL)
3404 for (i = 0; i < signalmax; ++i) 4485 for (i = 0; i < EV_NSIG - 1; ++i)
3405 for (wl = signals [i].head; wl; ) 4486 for (wl = signals [i].head; wl; )
3406 { 4487 {
3407 wn = wl->next; 4488 wn = wl->next;
3408 cb (EV_A_ EV_SIGNAL, wl); 4489 cb (EV_A_ EV_SIGNAL, wl);
3409 wl = wn; 4490 wl = wn;
3410 } 4491 }
4492#endif
3411 4493
4494#if EV_CHILD_ENABLE
3412 if (types & EV_CHILD) 4495 if (types & EV_CHILD)
3413 for (i = EV_PID_HASHSIZE; i--; ) 4496 for (i = (EV_PID_HASHSIZE); i--; )
3414 for (wl = childs [i]; wl; ) 4497 for (wl = childs [i]; wl; )
3415 { 4498 {
3416 wn = wl->next; 4499 wn = wl->next;
3417 cb (EV_A_ EV_CHILD, wl); 4500 cb (EV_A_ EV_CHILD, wl);
3418 wl = wn; 4501 wl = wn;
3419 } 4502 }
4503#endif
3420/* EV_STAT 0x00001000 /* stat data changed */ 4504/* EV_STAT 0x00001000 /* stat data changed */
3421/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4505/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3422} 4506}
3423#endif 4507#endif
3424 4508
3425#if EV_MULTIPLICITY 4509#if EV_MULTIPLICITY
3426 #include "ev_wrap.h" 4510 #include "ev_wrap.h"
3427#endif 4511#endif
3428 4512
3429#ifdef __cplusplus
3430}
3431#endif
3432

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