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Comparing libev/ev.c (file contents):
Revision 1.288 by root, Sat Apr 25 14:12:48 2009 UTC vs.
Revision 1.430 by root, Wed May 9 16:50:23 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
64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0
62# endif 66# endif
63 67
64# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
65# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
66# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
… …
75# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
77# endif 81# endif
78# endif 82# endif
79 83
84# if HAVE_NANOSLEEP
80# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
81# if HAVE_NANOSLEEP
82# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
83# else 88# else
89# undef EV_USE_NANOSLEEP
84# 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
85# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
86# endif 100# endif
87 101
102# if HAVE_POLL && HAVE_POLL_H
88# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
89# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
90# define EV_USE_SELECT 1
91# else
92# define EV_USE_SELECT 0
93# endif 105# endif
94# endif
95
96# ifndef EV_USE_POLL
97# if HAVE_POLL && HAVE_POLL_H
98# define EV_USE_POLL 1
99# else 106# else
107# undef EV_USE_POLL
100# define EV_USE_POLL 0 108# define EV_USE_POLL 0
101# endif
102# endif 109# endif
103 110
104# ifndef EV_USE_EPOLL
105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
106# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
107# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
108# define EV_USE_EPOLL 0
109# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
110# endif 118# endif
111 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
112# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
113# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
114# define EV_USE_KQUEUE 1
115# else
116# define EV_USE_KQUEUE 0
117# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
118# endif 127# endif
119 128
120# ifndef EV_USE_PORT
121# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
122# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
123# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
124# define EV_USE_PORT 0
125# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
126# endif 136# endif
127 137
128# ifndef EV_USE_INOTIFY
129# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
130# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
131# else
132# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
133# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
134# endif 145# endif
135 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
136# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
137# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
138# define EV_USE_EVENTFD 1
139# else
140# define EV_USE_EVENTFD 0
141# 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
142# endif 163# endif
143 164
144#endif 165#endif
145 166
146#include <math.h>
147#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
148#include <fcntl.h> 169#include <fcntl.h>
149#include <stddef.h> 170#include <stddef.h>
150 171
151#include <stdio.h> 172#include <stdio.h>
152 173
153#include <assert.h> 174#include <assert.h>
154#include <errno.h> 175#include <errno.h>
155#include <sys/types.h> 176#include <sys/types.h>
156#include <time.h> 177#include <time.h>
178#include <limits.h>
157 179
158#include <signal.h> 180#include <signal.h>
159 181
160#ifdef EV_H 182#ifdef EV_H
161# include EV_H 183# include EV_H
162#else 184#else
163# 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
164#endif 197#endif
165 198
166#ifndef _WIN32 199#ifndef _WIN32
167# include <sys/time.h> 200# include <sys/time.h>
168# include <sys/wait.h> 201# include <sys/wait.h>
169# include <unistd.h> 202# include <unistd.h>
170#else 203#else
171# include <io.h> 204# include <io.h>
172# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
173# include <windows.h> 206# include <windows.h>
207# include <winsock2.h>
174# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
176# endif 210# endif
211# undef EV_AVOID_STDIO
177#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
178 221
179/* 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
180 255
181#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 259# else
185# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
186# endif 261# endif
187#endif 262#endif
188 263
189#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 266# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 267# else
193# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
194# endif 269# endif
195#endif 270#endif
196 271
… …
198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 274#endif
200 275
201#ifndef EV_USE_NANOSLEEP 276#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 277# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 278# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 279# else
205# define EV_USE_NANOSLEEP 0 280# define EV_USE_NANOSLEEP 0
206# endif 281# endif
207#endif 282#endif
208 283
209#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 286#endif
212 287
213#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
214# ifdef _WIN32 289# ifdef _WIN32
215# define EV_USE_POLL 0 290# define EV_USE_POLL 0
216# else 291# else
217# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 293# endif
219#endif 294#endif
220 295
221#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 299# else
225# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
226# endif 301# endif
227#endif 302#endif
228 303
… …
234# define EV_USE_PORT 0 309# define EV_USE_PORT 0
235#endif 310#endif
236 311
237#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 315# else
241# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
242# endif 317# endif
243#endif 318#endif
244 319
245#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 321# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
247# define EV_PID_HASHSIZE 1
248# else
249# define EV_PID_HASHSIZE 16
250# endif
251#endif 322#endif
252 323
253#ifndef EV_INOTIFY_HASHSIZE 324#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 325# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
255# define EV_INOTIFY_HASHSIZE 1
256# else
257# define EV_INOTIFY_HASHSIZE 16
258# endif
259#endif 326#endif
260 327
261#ifndef EV_USE_EVENTFD 328#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 330# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 331# else
265# 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
266# endif 341# endif
267#endif 342#endif
268 343
269#if 0 /* debugging */ 344#if 0 /* debugging */
270# define EV_VERIFY 3 345# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 346# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 347# define EV_HEAP_CACHE_AT 1
273#endif 348#endif
274 349
275#ifndef EV_VERIFY 350#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 352#endif
278 353
279#ifndef EV_USE_4HEAP 354#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 355# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 356#endif
282 357
283#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
360#endif
361
362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
363/* which makes programs even slower. might work on other unices, too. */
364#if EV_USE_CLOCK_SYSCALL
365# include <sys/syscall.h>
366# ifdef SYS_clock_gettime
367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
368# undef EV_USE_MONOTONIC
369# define EV_USE_MONOTONIC 1
370# else
371# undef EV_USE_CLOCK_SYSCALL
372# define EV_USE_CLOCK_SYSCALL 0
373# endif
285#endif 374#endif
286 375
287/* 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 */
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
288 383
289#ifndef CLOCK_MONOTONIC 384#ifndef CLOCK_MONOTONIC
290# undef EV_USE_MONOTONIC 385# undef EV_USE_MONOTONIC
291# define EV_USE_MONOTONIC 0 386# define EV_USE_MONOTONIC 0
292#endif 387#endif
… …
300# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
301# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
302#endif 397#endif
303 398
304#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
305# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
306# include <sys/select.h> 402# include <sys/select.h>
307# endif 403# endif
308#endif 404#endif
309 405
310#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h> 407# include <sys/statfs.h>
313# include <sys/inotify.h> 408# include <sys/inotify.h>
314/* 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 */
315# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
318# endif 413# endif
319#endif 414#endif
320 415
321#if EV_SELECT_IS_WINSOCKET
322# include <winsock.h>
323#endif
324
325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
331# define EV_USE_MONOTONIC 1
332#endif
333
334#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
335/* 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 */
336# include <stdint.h> 418# include <stdint.h>
337# ifdef __cplusplus 419# ifndef EFD_NONBLOCK
338extern "C" { 420# define EFD_NONBLOCK O_NONBLOCK
339# endif 421# endif
340int eventfd (unsigned int initval, int flags); 422# ifndef EFD_CLOEXEC
341# ifdef __cplusplus 423# ifdef O_CLOEXEC
342} 424# define EFD_CLOEXEC O_CLOEXEC
425# else
426# define EFD_CLOEXEC 02000000
427# endif
343# 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};
344#endif 452#endif
345 453
346/**/ 454/**/
347 455
348#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 458#else
351# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
352#endif 460#endif
353 461
354/* 462/*
355 * This is used to avoid floating point rounding problems. 463 * This is used to work around floating point rounding problems.
356 * It is added to ev_rt_now when scheduling periodics
357 * to ensure progress, time-wise, even when rounding
358 * errors are against us.
359 * This value is good at least till the year 4000. 464 * This value is good at least till the year 4000.
360 * Better solutions welcome.
361 */ 465 */
362#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 */
363 468
364#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) */
365#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) */
366/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
367 471
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;
368#if __GNUC__ >= 4 516 #if __GNUC__
369# define expect(expr,value) __builtin_expect ((expr),(value)) 517 typedef signed long long int64_t;
370# 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
371#else 523#else
372# define expect(expr,value) (expr) 524 #include <inttypes.h>
373# define noinline
374# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
375# define inline
376# 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)))
377#endif 539 #endif
540#endif
378 541
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. */
379#define expect_false(expr) expect ((expr) != 0, 0) 705#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
380#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
381#define inline_size static inline 957#define inline_size ecb_inline
382 958
383#if EV_MINIMAL 959#if EV_FEATURE_CODE
960# define inline_speed ecb_inline
961#else
384# define inline_speed static noinline 962# define inline_speed static noinline
963#endif
964
965#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
966
967#if EV_MINPRI == EV_MAXPRI
968# define ABSPRI(w) (((W)w), 0)
385#else 969#else
386# define inline_speed static inline
387#endif
388
389#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
390#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 970# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
971#endif
391 972
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 973#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 974#define EMPTY2(a,b) /* used to suppress some warnings */
394 975
395typedef ev_watcher *W; 976typedef ev_watcher *W;
… …
399#define ev_active(w) ((W)(w))->active 980#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 981#define ev_at(w) ((WT)(w))->at
401 982
402#if EV_USE_REALTIME 983#if EV_USE_REALTIME
403/* 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 */
404/* giving it a reasonably high chance of working on typical architetcures */ 985/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 986static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 987#endif
407 988
408#if EV_USE_MONOTONIC 989#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 990static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 991#endif
411 992
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
412#ifdef _WIN32 1003#ifdef _WIN32
413# include "ev_win32.c" 1004# include "ev_win32.c"
414#endif 1005#endif
415 1006
416/*****************************************************************************/ 1007/*****************************************************************************/
417 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
418static void (*syserr_cb)(const char *msg); 1107static void (*syserr_cb)(const char *msg) EV_THROW;
419 1108
420void 1109void ecb_cold
421ev_set_syserr_cb (void (*cb)(const char *msg)) 1110ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
422{ 1111{
423 syserr_cb = cb; 1112 syserr_cb = cb;
424} 1113}
425 1114
426static void noinline 1115static void noinline ecb_cold
427ev_syserr (const char *msg) 1116ev_syserr (const char *msg)
428{ 1117{
429 if (!msg) 1118 if (!msg)
430 msg = "(libev) system error"; 1119 msg = "(libev) system error";
431 1120
432 if (syserr_cb) 1121 if (syserr_cb)
433 syserr_cb (msg); 1122 syserr_cb (msg);
434 else 1123 else
435 { 1124 {
1125#if EV_AVOID_STDIO
1126 ev_printerr (msg);
1127 ev_printerr (": ");
1128 ev_printerr (strerror (errno));
1129 ev_printerr ("\n");
1130#else
436 perror (msg); 1131 perror (msg);
1132#endif
437 abort (); 1133 abort ();
438 } 1134 }
439} 1135}
440 1136
441static void * 1137static void *
442ev_realloc_emul (void *ptr, long size) 1138ev_realloc_emul (void *ptr, long size)
443{ 1139{
1140#if __GLIBC__
1141 return realloc (ptr, size);
1142#else
444 /* some systems, notably openbsd and darwin, fail to properly 1143 /* some systems, notably openbsd and darwin, fail to properly
445 * 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
446 * the single unix specification, so work around them here. 1145 * the single unix specification, so work around them here.
447 */ 1146 */
448 1147
449 if (size) 1148 if (size)
450 return realloc (ptr, size); 1149 return realloc (ptr, size);
451 1150
452 free (ptr); 1151 free (ptr);
453 return 0; 1152 return 0;
1153#endif
454} 1154}
455 1155
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1156static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
457 1157
458void 1158void ecb_cold
459ev_set_allocator (void *(*cb)(void *ptr, long size)) 1159ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
460{ 1160{
461 alloc = cb; 1161 alloc = cb;
462} 1162}
463 1163
464inline_speed void * 1164inline_speed void *
… …
466{ 1166{
467 ptr = alloc (ptr, size); 1167 ptr = alloc (ptr, size);
468 1168
469 if (!ptr && size) 1169 if (!ptr && size)
470 { 1170 {
1171#if EV_AVOID_STDIO
1172 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1173#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1174 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1175#endif
472 abort (); 1176 abort ();
473 } 1177 }
474 1178
475 return ptr; 1179 return ptr;
476} 1180}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 1182#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 1183#define ev_free(ptr) ev_realloc ((ptr), 0)
480 1184
481/*****************************************************************************/ 1185/*****************************************************************************/
482 1186
1187/* set in reify when reification needed */
1188#define EV_ANFD_REIFY 1
1189
483/* file descriptor info structure */ 1190/* file descriptor info structure */
484typedef struct 1191typedef struct
485{ 1192{
486 WL head; 1193 WL head;
487 unsigned char events; /* the events watched for */ 1194 unsigned char events; /* the events watched for */
488 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) */
489 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 */
490 unsigned char unused; 1197 unsigned char unused;
491#if EV_USE_EPOLL 1198#if EV_USE_EPOLL
492 unsigned int egen; /* generation counter to counter epoll bugs */ 1199 unsigned int egen; /* generation counter to counter epoll bugs */
493#endif 1200#endif
494#if EV_SELECT_IS_WINSOCKET 1201#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
495 SOCKET handle; 1202 SOCKET handle;
1203#endif
1204#if EV_USE_IOCP
1205 OVERLAPPED or, ow;
496#endif 1206#endif
497} ANFD; 1207} ANFD;
498 1208
499/* stores the pending event set for a given watcher */ 1209/* stores the pending event set for a given watcher */
500typedef struct 1210typedef struct
… …
542 #undef VAR 1252 #undef VAR
543 }; 1253 };
544 #include "ev_wrap.h" 1254 #include "ev_wrap.h"
545 1255
546 static struct ev_loop default_loop_struct; 1256 static struct ev_loop default_loop_struct;
547 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 */
548 1258
549#else 1259#else
550 1260
551 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 */
552 #define VAR(name,decl) static decl; 1262 #define VAR(name,decl) static decl;
553 #include "ev_vars.h" 1263 #include "ev_vars.h"
554 #undef VAR 1264 #undef VAR
555 1265
556 static int ev_default_loop_ptr; 1266 static int ev_default_loop_ptr;
557 1267
558#endif 1268#endif
559 1269
1270#if EV_FEATURE_API
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)
1273# define EV_INVOKE_PENDING invoke_cb (EV_A)
1274#else
1275# define EV_RELEASE_CB (void)0
1276# define EV_ACQUIRE_CB (void)0
1277# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1278#endif
1279
1280#define EVBREAK_RECURSE 0x80
1281
560/*****************************************************************************/ 1282/*****************************************************************************/
561 1283
1284#ifndef EV_HAVE_EV_TIME
562ev_tstamp 1285ev_tstamp
563ev_time (void) 1286ev_time (void) EV_THROW
564{ 1287{
565#if EV_USE_REALTIME 1288#if EV_USE_REALTIME
566 if (expect_true (have_realtime)) 1289 if (expect_true (have_realtime))
567 { 1290 {
568 struct timespec ts; 1291 struct timespec ts;
… …
573 1296
574 struct timeval tv; 1297 struct timeval tv;
575 gettimeofday (&tv, 0); 1298 gettimeofday (&tv, 0);
576 return tv.tv_sec + tv.tv_usec * 1e-6; 1299 return tv.tv_sec + tv.tv_usec * 1e-6;
577} 1300}
1301#endif
578 1302
579inline_size ev_tstamp 1303inline_size ev_tstamp
580get_clock (void) 1304get_clock (void)
581{ 1305{
582#if EV_USE_MONOTONIC 1306#if EV_USE_MONOTONIC
… …
591 return ev_time (); 1315 return ev_time ();
592} 1316}
593 1317
594#if EV_MULTIPLICITY 1318#if EV_MULTIPLICITY
595ev_tstamp 1319ev_tstamp
596ev_now (EV_P) 1320ev_now (EV_P) EV_THROW
597{ 1321{
598 return ev_rt_now; 1322 return ev_rt_now;
599} 1323}
600#endif 1324#endif
601 1325
602void 1326void
603ev_sleep (ev_tstamp delay) 1327ev_sleep (ev_tstamp delay) EV_THROW
604{ 1328{
605 if (delay > 0.) 1329 if (delay > 0.)
606 { 1330 {
607#if EV_USE_NANOSLEEP 1331#if EV_USE_NANOSLEEP
608 struct timespec ts; 1332 struct timespec ts;
609 1333
610 ts.tv_sec = (time_t)delay; 1334 EV_TS_SET (ts, delay);
611 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
612
613 nanosleep (&ts, 0); 1335 nanosleep (&ts, 0);
614#elif defined(_WIN32) 1336#elif defined _WIN32
615 Sleep ((unsigned long)(delay * 1e3)); 1337 Sleep ((unsigned long)(delay * 1e3));
616#else 1338#else
617 struct timeval tv; 1339 struct timeval tv;
618 1340
619 tv.tv_sec = (time_t)delay;
620 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
621
622 /* 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 */
623 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1342 /* something not guaranteed by newer posix versions, but guaranteed */
624 /* by older ones */ 1343 /* by older ones */
1344 EV_TV_SET (tv, delay);
625 select (0, 0, 0, 0, &tv); 1345 select (0, 0, 0, 0, &tv);
626#endif 1346#endif
627 } 1347 }
628} 1348}
629 1349
630/*****************************************************************************/ 1350/*****************************************************************************/
631 1351
632#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 */
633 1353
634/* find a suitable new size for the given array, */ 1354/* find a suitable new size for the given array, */
635/* hopefully by rounding to a ncie-to-malloc size */ 1355/* hopefully by rounding to a nice-to-malloc size */
636inline_size int 1356inline_size int
637array_nextsize (int elem, int cur, int cnt) 1357array_nextsize (int elem, int cur, int cnt)
638{ 1358{
639 int ncur = cur + 1; 1359 int ncur = cur + 1;
640 1360
641 do 1361 do
642 ncur <<= 1; 1362 ncur <<= 1;
643 while (cnt > ncur); 1363 while (cnt > ncur);
644 1364
645 /* 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 */
646 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1366 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
647 { 1367 {
648 ncur *= elem; 1368 ncur *= elem;
649 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);
650 ncur = ncur - sizeof (void *) * 4; 1370 ncur = ncur - sizeof (void *) * 4;
… …
652 } 1372 }
653 1373
654 return ncur; 1374 return ncur;
655} 1375}
656 1376
657static noinline void * 1377static void * noinline ecb_cold
658array_realloc (int elem, void *base, int *cur, int cnt) 1378array_realloc (int elem, void *base, int *cur, int cnt)
659{ 1379{
660 *cur = array_nextsize (elem, *cur, cnt); 1380 *cur = array_nextsize (elem, *cur, cnt);
661 return ev_realloc (base, elem * *cur); 1381 return ev_realloc (base, elem * *cur);
662} 1382}
… …
665 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1385 memset ((void *)(base), 0, sizeof (*(base)) * (count))
666 1386
667#define array_needsize(type,base,cur,cnt,init) \ 1387#define array_needsize(type,base,cur,cnt,init) \
668 if (expect_false ((cnt) > (cur))) \ 1388 if (expect_false ((cnt) > (cur))) \
669 { \ 1389 { \
670 int ocur_ = (cur); \ 1390 int ecb_unused ocur_ = (cur); \
671 (base) = (type *)array_realloc \ 1391 (base) = (type *)array_realloc \
672 (sizeof (type), (base), &(cur), (cnt)); \ 1392 (sizeof (type), (base), &(cur), (cnt)); \
673 init ((base) + (ocur_), (cur) - ocur_); \ 1393 init ((base) + (ocur_), (cur) - ocur_); \
674 } 1394 }
675 1395
… …
693pendingcb (EV_P_ ev_prepare *w, int revents) 1413pendingcb (EV_P_ ev_prepare *w, int revents)
694{ 1414{
695} 1415}
696 1416
697void noinline 1417void noinline
698ev_feed_event (EV_P_ void *w, int revents) 1418ev_feed_event (EV_P_ void *w, int revents) EV_THROW
699{ 1419{
700 W w_ = (W)w; 1420 W w_ = (W)w;
701 int pri = ABSPRI (w_); 1421 int pri = ABSPRI (w_);
702 1422
703 if (expect_false (w_->pending)) 1423 if (expect_false (w_->pending))
… …
707 w_->pending = ++pendingcnt [pri]; 1427 w_->pending = ++pendingcnt [pri];
708 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1428 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
709 pendings [pri][w_->pending - 1].w = w_; 1429 pendings [pri][w_->pending - 1].w = w_;
710 pendings [pri][w_->pending - 1].events = revents; 1430 pendings [pri][w_->pending - 1].events = revents;
711 } 1431 }
1432
1433 pendingpri = NUMPRI - 1;
712} 1434}
713 1435
714inline_speed void 1436inline_speed void
715feed_reverse (EV_P_ W w) 1437feed_reverse (EV_P_ W w)
716{ 1438{
… …
736} 1458}
737 1459
738/*****************************************************************************/ 1460/*****************************************************************************/
739 1461
740inline_speed void 1462inline_speed void
741fd_event (EV_P_ int fd, int revents) 1463fd_event_nocheck (EV_P_ int fd, int revents)
742{ 1464{
743 ANFD *anfd = anfds + fd; 1465 ANFD *anfd = anfds + fd;
744 ev_io *w; 1466 ev_io *w;
745 1467
746 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)
… …
750 if (ev) 1472 if (ev)
751 ev_feed_event (EV_A_ (W)w, ev); 1473 ev_feed_event (EV_A_ (W)w, ev);
752 } 1474 }
753} 1475}
754 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
755void 1488void
756ev_feed_fd_event (EV_P_ int fd, int revents) 1489ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
757{ 1490{
758 if (fd >= 0 && fd < anfdmax) 1491 if (fd >= 0 && fd < anfdmax)
759 fd_event (EV_A_ fd, revents); 1492 fd_event_nocheck (EV_A_ fd, revents);
760} 1493}
761 1494
762/* make sure the external fd watch events are in-sync */ 1495/* make sure the external fd watch events are in-sync */
763/* with the kernel/libev internal state */ 1496/* with the kernel/libev internal state */
764inline_size void 1497inline_size void
765fd_reify (EV_P) 1498fd_reify (EV_P)
766{ 1499{
767 int i; 1500 int i;
768 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
769 for (i = 0; i < fdchangecnt; ++i) 1527 for (i = 0; i < fdchangecnt; ++i)
770 { 1528 {
771 int fd = fdchanges [i]; 1529 int fd = fdchanges [i];
772 ANFD *anfd = anfds + fd; 1530 ANFD *anfd = anfds + fd;
773 ev_io *w; 1531 ev_io *w;
774 1532
775 unsigned char events = 0; 1533 unsigned char o_events = anfd->events;
1534 unsigned char o_reify = anfd->reify;
776 1535
777 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1536 anfd->reify = 0;
778 events |= (unsigned char)w->events;
779 1537
780#if EV_SELECT_IS_WINSOCKET 1538 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
781 if (events)
782 { 1539 {
783 unsigned long arg; 1540 anfd->events = 0;
784 #ifdef EV_FD_TO_WIN32_HANDLE 1541
785 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1542 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
786 #else 1543 anfd->events |= (unsigned char)w->events;
787 anfd->handle = _get_osfhandle (fd); 1544
788 #endif 1545 if (o_events != anfd->events)
789 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1546 o_reify = EV__IOFDSET; /* actually |= */
790 } 1547 }
791#endif
792 1548
793 { 1549 if (o_reify & EV__IOFDSET)
794 unsigned char o_events = anfd->events;
795 unsigned char o_reify = anfd->reify;
796
797 anfd->reify = 0;
798 anfd->events = events;
799
800 if (o_events != events || o_reify & EV__IOFDSET)
801 backend_modify (EV_A_ fd, o_events, events); 1550 backend_modify (EV_A_ fd, o_events, anfd->events);
802 }
803 } 1551 }
804 1552
805 fdchangecnt = 0; 1553 fdchangecnt = 0;
806} 1554}
807 1555
… …
819 fdchanges [fdchangecnt - 1] = fd; 1567 fdchanges [fdchangecnt - 1] = fd;
820 } 1568 }
821} 1569}
822 1570
823/* 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 */
824inline_speed void 1572inline_speed void ecb_cold
825fd_kill (EV_P_ int fd) 1573fd_kill (EV_P_ int fd)
826{ 1574{
827 ev_io *w; 1575 ev_io *w;
828 1576
829 while ((w = (ev_io *)anfds [fd].head)) 1577 while ((w = (ev_io *)anfds [fd].head))
… …
831 ev_io_stop (EV_A_ w); 1579 ev_io_stop (EV_A_ w);
832 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);
833 } 1581 }
834} 1582}
835 1583
836/* check whether the given fd is atcually valid, for error recovery */ 1584/* check whether the given fd is actually valid, for error recovery */
837inline_size int 1585inline_size int ecb_cold
838fd_valid (int fd) 1586fd_valid (int fd)
839{ 1587{
840#ifdef _WIN32 1588#ifdef _WIN32
841 return _get_osfhandle (fd) != -1; 1589 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
842#else 1590#else
843 return fcntl (fd, F_GETFD) != -1; 1591 return fcntl (fd, F_GETFD) != -1;
844#endif 1592#endif
845} 1593}
846 1594
847/* called on EBADF to verify fds */ 1595/* called on EBADF to verify fds */
848static void noinline 1596static void noinline ecb_cold
849fd_ebadf (EV_P) 1597fd_ebadf (EV_P)
850{ 1598{
851 int fd; 1599 int fd;
852 1600
853 for (fd = 0; fd < anfdmax; ++fd) 1601 for (fd = 0; fd < anfdmax; ++fd)
… …
855 if (!fd_valid (fd) && errno == EBADF) 1603 if (!fd_valid (fd) && errno == EBADF)
856 fd_kill (EV_A_ fd); 1604 fd_kill (EV_A_ fd);
857} 1605}
858 1606
859/* 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 */
860static void noinline 1608static void noinline ecb_cold
861fd_enomem (EV_P) 1609fd_enomem (EV_P)
862{ 1610{
863 int fd; 1611 int fd;
864 1612
865 for (fd = anfdmax; fd--; ) 1613 for (fd = anfdmax; fd--; )
866 if (anfds [fd].events) 1614 if (anfds [fd].events)
867 { 1615 {
868 fd_kill (EV_A_ fd); 1616 fd_kill (EV_A_ fd);
869 return; 1617 break;
870 } 1618 }
871} 1619}
872 1620
873/* 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 */
874static void noinline 1622static void noinline
… …
879 for (fd = 0; fd < anfdmax; ++fd) 1627 for (fd = 0; fd < anfdmax; ++fd)
880 if (anfds [fd].events) 1628 if (anfds [fd].events)
881 { 1629 {
882 anfds [fd].events = 0; 1630 anfds [fd].events = 0;
883 anfds [fd].emask = 0; 1631 anfds [fd].emask = 0;
884 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1632 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
885 } 1633 }
886} 1634}
887 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
888/*****************************************************************************/ 1650/*****************************************************************************/
889 1651
890/* 1652/*
891 * 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
892 * 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
893 * the branching factor of the d-tree. 1655 * the branching factor of the d-tree.
894 */ 1656 */
895 1657
896/* 1658/*
… …
964 1726
965 for (;;) 1727 for (;;)
966 { 1728 {
967 int c = k << 1; 1729 int c = k << 1;
968 1730
969 if (c > N + HEAP0 - 1) 1731 if (c >= N + HEAP0)
970 break; 1732 break;
971 1733
972 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])
973 ? 1 : 0; 1735 ? 1 : 0;
974 1736
… …
1010 1772
1011/* move an element suitably so it is in a correct place */ 1773/* move an element suitably so it is in a correct place */
1012inline_size void 1774inline_size void
1013adjustheap (ANHE *heap, int N, int k) 1775adjustheap (ANHE *heap, int N, int k)
1014{ 1776{
1015 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)]))
1016 upheap (heap, k); 1778 upheap (heap, k);
1017 else 1779 else
1018 downheap (heap, N, k); 1780 downheap (heap, N, k);
1019} 1781}
1020 1782
… …
1033/*****************************************************************************/ 1795/*****************************************************************************/
1034 1796
1035/* associate signal watchers to a signal signal */ 1797/* associate signal watchers to a signal signal */
1036typedef struct 1798typedef struct
1037{ 1799{
1800 EV_ATOMIC_T pending;
1801#if EV_MULTIPLICITY
1802 EV_P;
1803#endif
1038 WL head; 1804 WL head;
1039 EV_ATOMIC_T gotsig;
1040} ANSIG; 1805} ANSIG;
1041 1806
1042static ANSIG *signals; 1807static ANSIG signals [EV_NSIG - 1];
1043static int signalmax;
1044
1045static EV_ATOMIC_T gotsig;
1046 1808
1047/*****************************************************************************/ 1809/*****************************************************************************/
1048 1810
1049/* used to prepare libev internal fd's */ 1811#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1050/* this is not fork-safe */
1051inline_speed void
1052fd_intern (int fd)
1053{
1054#ifdef _WIN32
1055 unsigned long arg = 1;
1056 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1057#else
1058 fcntl (fd, F_SETFD, FD_CLOEXEC);
1059 fcntl (fd, F_SETFL, O_NONBLOCK);
1060#endif
1061}
1062 1812
1063static void noinline 1813static void noinline ecb_cold
1064evpipe_init (EV_P) 1814evpipe_init (EV_P)
1065{ 1815{
1066 if (!ev_is_active (&pipe_w)) 1816 if (!ev_is_active (&pipe_w))
1067 { 1817 {
1068#if EV_USE_EVENTFD 1818# if EV_USE_EVENTFD
1819 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1820 if (evfd < 0 && errno == EINVAL)
1069 if ((evfd = eventfd (0, 0)) >= 0) 1821 evfd = eventfd (0, 0);
1822
1823 if (evfd >= 0)
1070 { 1824 {
1071 evpipe [0] = -1; 1825 evpipe [0] = -1;
1072 fd_intern (evfd); 1826 fd_intern (evfd); /* doing it twice doesn't hurt */
1073 ev_io_set (&pipe_w, evfd, EV_READ); 1827 ev_io_set (&pipe_w, evfd, EV_READ);
1074 } 1828 }
1075 else 1829 else
1076#endif 1830# endif
1077 { 1831 {
1078 while (pipe (evpipe)) 1832 while (pipe (evpipe))
1079 ev_syserr ("(libev) error creating signal/async pipe"); 1833 ev_syserr ("(libev) error creating signal/async pipe");
1080 1834
1081 fd_intern (evpipe [0]); 1835 fd_intern (evpipe [0]);
… …
1086 ev_io_start (EV_A_ &pipe_w); 1840 ev_io_start (EV_A_ &pipe_w);
1087 ev_unref (EV_A); /* watcher should not keep loop alive */ 1841 ev_unref (EV_A); /* watcher should not keep loop alive */
1088 } 1842 }
1089} 1843}
1090 1844
1091inline_size void 1845inline_speed void
1092evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1846evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1093{ 1847{
1094 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)
1095 { 1862 {
1863 int old_errno;
1864
1865 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1866
1096 int old_errno = errno; /* save errno because write might clobber it */ 1867 old_errno = errno; /* save errno because write will clobber it */
1097
1098 *flag = 1;
1099 1868
1100#if EV_USE_EVENTFD 1869#if EV_USE_EVENTFD
1101 if (evfd >= 0) 1870 if (evfd >= 0)
1102 { 1871 {
1103 uint64_t counter = 1; 1872 uint64_t counter = 1;
1104 write (evfd, &counter, sizeof (uint64_t)); 1873 write (evfd, &counter, sizeof (uint64_t));
1105 } 1874 }
1106 else 1875 else
1107#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
1108 write (evpipe [1], &old_errno, 1); 1885 write (evpipe [1], &(evpipe [1]), 1);
1886#endif
1887 }
1109 1888
1110 errno = old_errno; 1889 errno = old_errno;
1111 } 1890 }
1112} 1891}
1113 1892
1114/* called whenever the libev signal pipe */ 1893/* called whenever the libev signal pipe */
1115/* got some events (signal, async) */ 1894/* got some events (signal, async) */
1116static void 1895static void
1117pipecb (EV_P_ ev_io *iow, int revents) 1896pipecb (EV_P_ ev_io *iow, int revents)
1118{ 1897{
1898 int i;
1899
1900 if (revents & EV_READ)
1901 {
1119#if EV_USE_EVENTFD 1902#if EV_USE_EVENTFD
1120 if (evfd >= 0) 1903 if (evfd >= 0)
1121 { 1904 {
1122 uint64_t counter; 1905 uint64_t counter;
1123 read (evfd, &counter, sizeof (uint64_t)); 1906 read (evfd, &counter, sizeof (uint64_t));
1124 } 1907 }
1125 else 1908 else
1126#endif 1909#endif
1127 { 1910 {
1128 char dummy; 1911 char dummy[4];
1912#ifdef _WIN32
1913 WSABUF buf;
1914 DWORD recvd;
1915 buf.buf = dummy;
1916 buf.len = sizeof (dummy);
1917 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, 0, 0, 0);
1918#else
1129 read (evpipe [0], &dummy, 1); 1919 read (evpipe [0], &dummy, sizeof (dummy));
1920#endif
1921 }
1922 }
1923
1924 pipe_write_skipped = 0;
1925
1926 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1927
1928#if EV_SIGNAL_ENABLE
1929 if (sig_pending)
1130 } 1930 {
1931 sig_pending = 0;
1131 1932
1132 if (gotsig && ev_is_default_loop (EV_A)) 1933 ECB_MEMORY_FENCE_RELEASE;
1133 {
1134 int signum;
1135 gotsig = 0;
1136 1934
1137 for (signum = signalmax; signum--; ) 1935 for (i = EV_NSIG - 1; i--; )
1138 if (signals [signum].gotsig) 1936 if (expect_false (signals [i].pending))
1139 ev_feed_signal_event (EV_A_ signum + 1); 1937 ev_feed_signal_event (EV_A_ i + 1);
1140 } 1938 }
1939#endif
1141 1940
1142#if EV_ASYNC_ENABLE 1941#if EV_ASYNC_ENABLE
1143 if (gotasync) 1942 if (async_pending)
1144 { 1943 {
1145 int i; 1944 async_pending = 0;
1146 gotasync = 0; 1945
1946 ECB_MEMORY_FENCE_RELEASE;
1147 1947
1148 for (i = asynccnt; i--; ) 1948 for (i = asynccnt; i--; )
1149 if (asyncs [i]->sent) 1949 if (asyncs [i]->sent)
1150 { 1950 {
1151 asyncs [i]->sent = 0; 1951 asyncs [i]->sent = 0;
… …
1155#endif 1955#endif
1156} 1956}
1157 1957
1158/*****************************************************************************/ 1958/*****************************************************************************/
1159 1959
1960void
1961ev_feed_signal (int signum) EV_THROW
1962{
1963#if EV_MULTIPLICITY
1964 EV_P = signals [signum - 1].loop;
1965
1966 if (!EV_A)
1967 return;
1968#endif
1969
1970 if (!ev_active (&pipe_w))
1971 return;
1972
1973 signals [signum - 1].pending = 1;
1974 evpipe_write (EV_A_ &sig_pending);
1975}
1976
1160static void 1977static void
1161ev_sighandler (int signum) 1978ev_sighandler (int signum)
1162{ 1979{
1980#ifdef _WIN32
1981 signal (signum, ev_sighandler);
1982#endif
1983
1984 ev_feed_signal (signum);
1985}
1986
1987void noinline
1988ev_feed_signal_event (EV_P_ int signum) EV_THROW
1989{
1990 WL w;
1991
1992 if (expect_false (signum <= 0 || signum > EV_NSIG))
1993 return;
1994
1995 --signum;
1996
1163#if EV_MULTIPLICITY 1997#if EV_MULTIPLICITY
1164 struct ev_loop *loop = &default_loop_struct; 1998 /* it is permissible to try to feed a signal to the wrong loop */
1165#endif 1999 /* or, likely more useful, feeding a signal nobody is waiting for */
1166 2000
1167#if _WIN32 2001 if (expect_false (signals [signum].loop != EV_A))
1168 signal (signum, ev_sighandler);
1169#endif
1170
1171 signals [signum - 1].gotsig = 1;
1172 evpipe_write (EV_A_ &gotsig);
1173}
1174
1175void noinline
1176ev_feed_signal_event (EV_P_ int signum)
1177{
1178 WL w;
1179
1180#if EV_MULTIPLICITY
1181 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1182#endif
1183
1184 --signum;
1185
1186 if (signum < 0 || signum >= signalmax)
1187 return; 2002 return;
2003#endif
1188 2004
1189 signals [signum].gotsig = 0; 2005 signals [signum].pending = 0;
1190 2006
1191 for (w = signals [signum].head; w; w = w->next) 2007 for (w = signals [signum].head; w; w = w->next)
1192 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2008 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1193} 2009}
1194 2010
2011#if EV_USE_SIGNALFD
2012static void
2013sigfdcb (EV_P_ ev_io *iow, int revents)
2014{
2015 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2016
2017 for (;;)
2018 {
2019 ssize_t res = read (sigfd, si, sizeof (si));
2020
2021 /* not ISO-C, as res might be -1, but works with SuS */
2022 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2023 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2024
2025 if (res < (ssize_t)sizeof (si))
2026 break;
2027 }
2028}
2029#endif
2030
2031#endif
2032
1195/*****************************************************************************/ 2033/*****************************************************************************/
1196 2034
2035#if EV_CHILD_ENABLE
1197static WL childs [EV_PID_HASHSIZE]; 2036static WL childs [EV_PID_HASHSIZE];
1198
1199#ifndef _WIN32
1200 2037
1201static ev_signal childev; 2038static ev_signal childev;
1202 2039
1203#ifndef WIFCONTINUED 2040#ifndef WIFCONTINUED
1204# define WIFCONTINUED(status) 0 2041# define WIFCONTINUED(status) 0
… …
1209child_reap (EV_P_ int chain, int pid, int status) 2046child_reap (EV_P_ int chain, int pid, int status)
1210{ 2047{
1211 ev_child *w; 2048 ev_child *w;
1212 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2049 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1213 2050
1214 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2051 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1215 { 2052 {
1216 if ((w->pid == pid || !w->pid) 2053 if ((w->pid == pid || !w->pid)
1217 && (!traced || (w->flags & 1))) 2054 && (!traced || (w->flags & 1)))
1218 { 2055 {
1219 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2056 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1244 /* make sure we are called again until all children have been reaped */ 2081 /* make sure we are called again until all children have been reaped */
1245 /* we need to do it this way so that the callback gets called before we continue */ 2082 /* we need to do it this way so that the callback gets called before we continue */
1246 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2083 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1247 2084
1248 child_reap (EV_A_ pid, pid, status); 2085 child_reap (EV_A_ pid, pid, status);
1249 if (EV_PID_HASHSIZE > 1) 2086 if ((EV_PID_HASHSIZE) > 1)
1250 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2087 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1251} 2088}
1252 2089
1253#endif 2090#endif
1254 2091
1255/*****************************************************************************/ 2092/*****************************************************************************/
1256 2093
2094#if EV_USE_IOCP
2095# include "ev_iocp.c"
2096#endif
1257#if EV_USE_PORT 2097#if EV_USE_PORT
1258# include "ev_port.c" 2098# include "ev_port.c"
1259#endif 2099#endif
1260#if EV_USE_KQUEUE 2100#if EV_USE_KQUEUE
1261# include "ev_kqueue.c" 2101# include "ev_kqueue.c"
… …
1268#endif 2108#endif
1269#if EV_USE_SELECT 2109#if EV_USE_SELECT
1270# include "ev_select.c" 2110# include "ev_select.c"
1271#endif 2111#endif
1272 2112
1273int 2113int ecb_cold
1274ev_version_major (void) 2114ev_version_major (void) EV_THROW
1275{ 2115{
1276 return EV_VERSION_MAJOR; 2116 return EV_VERSION_MAJOR;
1277} 2117}
1278 2118
1279int 2119int ecb_cold
1280ev_version_minor (void) 2120ev_version_minor (void) EV_THROW
1281{ 2121{
1282 return EV_VERSION_MINOR; 2122 return EV_VERSION_MINOR;
1283} 2123}
1284 2124
1285/* return true if we are running with elevated privileges and should ignore env variables */ 2125/* return true if we are running with elevated privileges and should ignore env variables */
1286int inline_size 2126int inline_size ecb_cold
1287enable_secure (void) 2127enable_secure (void)
1288{ 2128{
1289#ifdef _WIN32 2129#ifdef _WIN32
1290 return 0; 2130 return 0;
1291#else 2131#else
1292 return getuid () != geteuid () 2132 return getuid () != geteuid ()
1293 || getgid () != getegid (); 2133 || getgid () != getegid ();
1294#endif 2134#endif
1295} 2135}
1296 2136
1297unsigned int 2137unsigned int ecb_cold
1298ev_supported_backends (void) 2138ev_supported_backends (void) EV_THROW
1299{ 2139{
1300 unsigned int flags = 0; 2140 unsigned int flags = 0;
1301 2141
1302 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2142 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1303 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2143 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1306 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2146 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1307 2147
1308 return flags; 2148 return flags;
1309} 2149}
1310 2150
1311unsigned int 2151unsigned int ecb_cold
1312ev_recommended_backends (void) 2152ev_recommended_backends (void) EV_THROW
1313{ 2153{
1314 unsigned int flags = ev_supported_backends (); 2154 unsigned int flags = ev_supported_backends ();
1315 2155
1316#ifndef __NetBSD__ 2156#ifndef __NetBSD__
1317 /* kqueue is borked on everything but netbsd apparently */ 2157 /* kqueue is borked on everything but netbsd apparently */
… …
1321#ifdef __APPLE__ 2161#ifdef __APPLE__
1322 /* only select works correctly on that "unix-certified" platform */ 2162 /* only select works correctly on that "unix-certified" platform */
1323 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2163 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1324 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2164 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1325#endif 2165#endif
2166#ifdef __FreeBSD__
2167 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2168#endif
1326 2169
1327 return flags; 2170 return flags;
1328} 2171}
1329 2172
2173unsigned int ecb_cold
2174ev_embeddable_backends (void) EV_THROW
2175{
2176 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2177
2178 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2179 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2180 flags &= ~EVBACKEND_EPOLL;
2181
2182 return flags;
2183}
2184
1330unsigned int 2185unsigned int
1331ev_embeddable_backends (void) 2186ev_backend (EV_P) EV_THROW
1332{ 2187{
1333 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2188 return backend;
1334
1335 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1336 /* please fix it and tell me how to detect the fix */
1337 flags &= ~EVBACKEND_EPOLL;
1338
1339 return flags;
1340} 2189}
1341 2190
2191#if EV_FEATURE_API
1342unsigned int 2192unsigned int
1343ev_backend (EV_P) 2193ev_iteration (EV_P) EV_THROW
1344{ 2194{
1345 return backend; 2195 return loop_count;
1346} 2196}
1347 2197
1348unsigned int 2198unsigned int
1349ev_loop_count (EV_P) 2199ev_depth (EV_P) EV_THROW
1350{ 2200{
1351 return loop_count; 2201 return loop_depth;
1352} 2202}
1353 2203
1354void 2204void
1355ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2205ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1356{ 2206{
1357 io_blocktime = interval; 2207 io_blocktime = interval;
1358} 2208}
1359 2209
1360void 2210void
1361ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2211ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1362{ 2212{
1363 timeout_blocktime = interval; 2213 timeout_blocktime = interval;
1364} 2214}
1365 2215
2216void
2217ev_set_userdata (EV_P_ void *data) EV_THROW
2218{
2219 userdata = data;
2220}
2221
2222void *
2223ev_userdata (EV_P) EV_THROW
2224{
2225 return userdata;
2226}
2227
2228void
2229ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2230{
2231 invoke_cb = invoke_pending_cb;
2232}
2233
2234void
2235ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2236{
2237 release_cb = release;
2238 acquire_cb = acquire;
2239}
2240#endif
2241
1366/* initialise a loop structure, must be zero-initialised */ 2242/* initialise a loop structure, must be zero-initialised */
1367static void noinline 2243static void noinline ecb_cold
1368loop_init (EV_P_ unsigned int flags) 2244loop_init (EV_P_ unsigned int flags) EV_THROW
1369{ 2245{
1370 if (!backend) 2246 if (!backend)
1371 { 2247 {
2248 origflags = flags;
2249
1372#if EV_USE_REALTIME 2250#if EV_USE_REALTIME
1373 if (!have_realtime) 2251 if (!have_realtime)
1374 { 2252 {
1375 struct timespec ts; 2253 struct timespec ts;
1376 2254
… …
1387 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2265 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1388 have_monotonic = 1; 2266 have_monotonic = 1;
1389 } 2267 }
1390#endif 2268#endif
1391 2269
1392 ev_rt_now = ev_time ();
1393 mn_now = get_clock ();
1394 now_floor = mn_now;
1395 rtmn_diff = ev_rt_now - mn_now;
1396
1397 io_blocktime = 0.;
1398 timeout_blocktime = 0.;
1399 backend = 0;
1400 backend_fd = -1;
1401 gotasync = 0;
1402#if EV_USE_INOTIFY
1403 fs_fd = -2;
1404#endif
1405
1406 /* pid check not overridable via env */ 2270 /* pid check not overridable via env */
1407#ifndef _WIN32 2271#ifndef _WIN32
1408 if (flags & EVFLAG_FORKCHECK) 2272 if (flags & EVFLAG_FORKCHECK)
1409 curpid = getpid (); 2273 curpid = getpid ();
1410#endif 2274#endif
… …
1412 if (!(flags & EVFLAG_NOENV) 2276 if (!(flags & EVFLAG_NOENV)
1413 && !enable_secure () 2277 && !enable_secure ()
1414 && getenv ("LIBEV_FLAGS")) 2278 && getenv ("LIBEV_FLAGS"))
1415 flags = atoi (getenv ("LIBEV_FLAGS")); 2279 flags = atoi (getenv ("LIBEV_FLAGS"));
1416 2280
1417 if (!(flags & 0x0000ffffU)) 2281 ev_rt_now = ev_time ();
2282 mn_now = get_clock ();
2283 now_floor = mn_now;
2284 rtmn_diff = ev_rt_now - mn_now;
2285#if EV_FEATURE_API
2286 invoke_cb = ev_invoke_pending;
2287#endif
2288
2289 io_blocktime = 0.;
2290 timeout_blocktime = 0.;
2291 backend = 0;
2292 backend_fd = -1;
2293 sig_pending = 0;
2294#if EV_ASYNC_ENABLE
2295 async_pending = 0;
2296#endif
2297 pipe_write_skipped = 0;
2298 pipe_write_wanted = 0;
2299#if EV_USE_INOTIFY
2300 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2301#endif
2302#if EV_USE_SIGNALFD
2303 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2304#endif
2305
2306 if (!(flags & EVBACKEND_MASK))
1418 flags |= ev_recommended_backends (); 2307 flags |= ev_recommended_backends ();
1419 2308
2309#if EV_USE_IOCP
2310 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2311#endif
1420#if EV_USE_PORT 2312#if EV_USE_PORT
1421 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2313 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1422#endif 2314#endif
1423#if EV_USE_KQUEUE 2315#if EV_USE_KQUEUE
1424 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2316 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1433 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2325 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1434#endif 2326#endif
1435 2327
1436 ev_prepare_init (&pending_w, pendingcb); 2328 ev_prepare_init (&pending_w, pendingcb);
1437 2329
2330#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1438 ev_init (&pipe_w, pipecb); 2331 ev_init (&pipe_w, pipecb);
1439 ev_set_priority (&pipe_w, EV_MAXPRI); 2332 ev_set_priority (&pipe_w, EV_MAXPRI);
2333#endif
1440 } 2334 }
1441} 2335}
1442 2336
1443/* free up a loop structure */ 2337/* free up a loop structure */
1444static void noinline 2338void ecb_cold
1445loop_destroy (EV_P) 2339ev_loop_destroy (EV_P)
1446{ 2340{
1447 int i; 2341 int i;
1448 2342
2343#if EV_MULTIPLICITY
2344 /* mimic free (0) */
2345 if (!EV_A)
2346 return;
2347#endif
2348
2349#if EV_CLEANUP_ENABLE
2350 /* queue cleanup watchers (and execute them) */
2351 if (expect_false (cleanupcnt))
2352 {
2353 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2354 EV_INVOKE_PENDING;
2355 }
2356#endif
2357
2358#if EV_CHILD_ENABLE
2359 if (ev_is_active (&childev))
2360 {
2361 ev_ref (EV_A); /* child watcher */
2362 ev_signal_stop (EV_A_ &childev);
2363 }
2364#endif
2365
1449 if (ev_is_active (&pipe_w)) 2366 if (ev_is_active (&pipe_w))
1450 { 2367 {
1451 ev_ref (EV_A); /* signal watcher */ 2368 /*ev_ref (EV_A);*/
1452 ev_io_stop (EV_A_ &pipe_w); 2369 /*ev_io_stop (EV_A_ &pipe_w);*/
1453 2370
1454#if EV_USE_EVENTFD 2371#if EV_USE_EVENTFD
1455 if (evfd >= 0) 2372 if (evfd >= 0)
1456 close (evfd); 2373 close (evfd);
1457#endif 2374#endif
1458 2375
1459 if (evpipe [0] >= 0) 2376 if (evpipe [0] >= 0)
1460 { 2377 {
1461 close (evpipe [0]); 2378 EV_WIN32_CLOSE_FD (evpipe [0]);
1462 close (evpipe [1]); 2379 EV_WIN32_CLOSE_FD (evpipe [1]);
1463 } 2380 }
1464 } 2381 }
2382
2383#if EV_USE_SIGNALFD
2384 if (ev_is_active (&sigfd_w))
2385 close (sigfd);
2386#endif
1465 2387
1466#if EV_USE_INOTIFY 2388#if EV_USE_INOTIFY
1467 if (fs_fd >= 0) 2389 if (fs_fd >= 0)
1468 close (fs_fd); 2390 close (fs_fd);
1469#endif 2391#endif
1470 2392
1471 if (backend_fd >= 0) 2393 if (backend_fd >= 0)
1472 close (backend_fd); 2394 close (backend_fd);
1473 2395
2396#if EV_USE_IOCP
2397 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2398#endif
1474#if EV_USE_PORT 2399#if EV_USE_PORT
1475 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2400 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1476#endif 2401#endif
1477#if EV_USE_KQUEUE 2402#if EV_USE_KQUEUE
1478 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2403 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1493#if EV_IDLE_ENABLE 2418#if EV_IDLE_ENABLE
1494 array_free (idle, [i]); 2419 array_free (idle, [i]);
1495#endif 2420#endif
1496 } 2421 }
1497 2422
1498 ev_free (anfds); anfdmax = 0; 2423 ev_free (anfds); anfds = 0; anfdmax = 0;
1499 2424
1500 /* have to use the microsoft-never-gets-it-right macro */ 2425 /* have to use the microsoft-never-gets-it-right macro */
1501 array_free (rfeed, EMPTY); 2426 array_free (rfeed, EMPTY);
1502 array_free (fdchange, EMPTY); 2427 array_free (fdchange, EMPTY);
1503 array_free (timer, EMPTY); 2428 array_free (timer, EMPTY);
… …
1505 array_free (periodic, EMPTY); 2430 array_free (periodic, EMPTY);
1506#endif 2431#endif
1507#if EV_FORK_ENABLE 2432#if EV_FORK_ENABLE
1508 array_free (fork, EMPTY); 2433 array_free (fork, EMPTY);
1509#endif 2434#endif
2435#if EV_CLEANUP_ENABLE
2436 array_free (cleanup, EMPTY);
2437#endif
1510 array_free (prepare, EMPTY); 2438 array_free (prepare, EMPTY);
1511 array_free (check, EMPTY); 2439 array_free (check, EMPTY);
1512#if EV_ASYNC_ENABLE 2440#if EV_ASYNC_ENABLE
1513 array_free (async, EMPTY); 2441 array_free (async, EMPTY);
1514#endif 2442#endif
1515 2443
1516 backend = 0; 2444 backend = 0;
2445
2446#if EV_MULTIPLICITY
2447 if (ev_is_default_loop (EV_A))
2448#endif
2449 ev_default_loop_ptr = 0;
2450#if EV_MULTIPLICITY
2451 else
2452 ev_free (EV_A);
2453#endif
1517} 2454}
1518 2455
1519#if EV_USE_INOTIFY 2456#if EV_USE_INOTIFY
1520inline_size void infy_fork (EV_P); 2457inline_size void infy_fork (EV_P);
1521#endif 2458#endif
… …
1536 infy_fork (EV_A); 2473 infy_fork (EV_A);
1537#endif 2474#endif
1538 2475
1539 if (ev_is_active (&pipe_w)) 2476 if (ev_is_active (&pipe_w))
1540 { 2477 {
1541 /* this "locks" the handlers against writing to the pipe */ 2478 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1542 /* while we modify the fd vars */
1543 gotsig = 1;
1544#if EV_ASYNC_ENABLE
1545 gotasync = 1;
1546#endif
1547 2479
1548 ev_ref (EV_A); 2480 ev_ref (EV_A);
1549 ev_io_stop (EV_A_ &pipe_w); 2481 ev_io_stop (EV_A_ &pipe_w);
1550 2482
1551#if EV_USE_EVENTFD 2483#if EV_USE_EVENTFD
… …
1553 close (evfd); 2485 close (evfd);
1554#endif 2486#endif
1555 2487
1556 if (evpipe [0] >= 0) 2488 if (evpipe [0] >= 0)
1557 { 2489 {
1558 close (evpipe [0]); 2490 EV_WIN32_CLOSE_FD (evpipe [0]);
1559 close (evpipe [1]); 2491 EV_WIN32_CLOSE_FD (evpipe [1]);
1560 } 2492 }
1561 2493
2494#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1562 evpipe_init (EV_A); 2495 evpipe_init (EV_A);
1563 /* now iterate over everything, in case we missed something */ 2496 /* now iterate over everything, in case we missed something */
1564 pipecb (EV_A_ &pipe_w, EV_READ); 2497 pipecb (EV_A_ &pipe_w, EV_READ);
2498#endif
1565 } 2499 }
1566 2500
1567 postfork = 0; 2501 postfork = 0;
1568} 2502}
1569 2503
1570#if EV_MULTIPLICITY 2504#if EV_MULTIPLICITY
1571 2505
1572struct ev_loop * 2506struct ev_loop * ecb_cold
1573ev_loop_new (unsigned int flags) 2507ev_loop_new (unsigned int flags) EV_THROW
1574{ 2508{
1575 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2509 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1576 2510
1577 memset (loop, 0, sizeof (struct ev_loop)); 2511 memset (EV_A, 0, sizeof (struct ev_loop));
1578
1579 loop_init (EV_A_ flags); 2512 loop_init (EV_A_ flags);
1580 2513
1581 if (ev_backend (EV_A)) 2514 if (ev_backend (EV_A))
1582 return loop; 2515 return EV_A;
1583 2516
2517 ev_free (EV_A);
1584 return 0; 2518 return 0;
1585} 2519}
1586 2520
1587void 2521#endif /* multiplicity */
1588ev_loop_destroy (EV_P)
1589{
1590 loop_destroy (EV_A);
1591 ev_free (loop);
1592}
1593
1594void
1595ev_loop_fork (EV_P)
1596{
1597 postfork = 1; /* must be in line with ev_default_fork */
1598}
1599 2522
1600#if EV_VERIFY 2523#if EV_VERIFY
1601static void noinline 2524static void noinline ecb_cold
1602verify_watcher (EV_P_ W w) 2525verify_watcher (EV_P_ W w)
1603{ 2526{
1604 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2527 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1605 2528
1606 if (w->pending) 2529 if (w->pending)
1607 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2530 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1608} 2531}
1609 2532
1610static void noinline 2533static void noinline ecb_cold
1611verify_heap (EV_P_ ANHE *heap, int N) 2534verify_heap (EV_P_ ANHE *heap, int N)
1612{ 2535{
1613 int i; 2536 int i;
1614 2537
1615 for (i = HEAP0; i < N + HEAP0; ++i) 2538 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1620 2543
1621 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2544 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1622 } 2545 }
1623} 2546}
1624 2547
1625static void noinline 2548static void noinline ecb_cold
1626array_verify (EV_P_ W *ws, int cnt) 2549array_verify (EV_P_ W *ws, int cnt)
1627{ 2550{
1628 while (cnt--) 2551 while (cnt--)
1629 { 2552 {
1630 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2553 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1631 verify_watcher (EV_A_ ws [cnt]); 2554 verify_watcher (EV_A_ ws [cnt]);
1632 } 2555 }
1633} 2556}
1634#endif 2557#endif
1635 2558
1636void 2559#if EV_FEATURE_API
1637ev_loop_verify (EV_P) 2560void ecb_cold
2561ev_verify (EV_P) EV_THROW
1638{ 2562{
1639#if EV_VERIFY 2563#if EV_VERIFY
1640 int i; 2564 int i;
1641 WL w; 2565 WL w, w2;
1642 2566
1643 assert (activecnt >= -1); 2567 assert (activecnt >= -1);
1644 2568
1645 assert (fdchangemax >= fdchangecnt); 2569 assert (fdchangemax >= fdchangecnt);
1646 for (i = 0; i < fdchangecnt; ++i) 2570 for (i = 0; i < fdchangecnt; ++i)
1647 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2571 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1648 2572
1649 assert (anfdmax >= 0); 2573 assert (anfdmax >= 0);
1650 for (i = 0; i < anfdmax; ++i) 2574 for (i = 0; i < anfdmax; ++i)
2575 {
2576 int j = 0;
2577
1651 for (w = anfds [i].head; w; w = w->next) 2578 for (w = w2 = anfds [i].head; w; w = w->next)
1652 { 2579 {
1653 verify_watcher (EV_A_ (W)w); 2580 verify_watcher (EV_A_ (W)w);
2581
2582 if (j++ & 1)
2583 {
2584 assert (("libev: io watcher list contains a loop", w != w2));
2585 w2 = w2->next;
2586 }
2587
1654 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2588 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1655 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2589 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1656 } 2590 }
2591 }
1657 2592
1658 assert (timermax >= timercnt); 2593 assert (timermax >= timercnt);
1659 verify_heap (EV_A_ timers, timercnt); 2594 verify_heap (EV_A_ timers, timercnt);
1660 2595
1661#if EV_PERIODIC_ENABLE 2596#if EV_PERIODIC_ENABLE
… …
1676#if EV_FORK_ENABLE 2611#if EV_FORK_ENABLE
1677 assert (forkmax >= forkcnt); 2612 assert (forkmax >= forkcnt);
1678 array_verify (EV_A_ (W *)forks, forkcnt); 2613 array_verify (EV_A_ (W *)forks, forkcnt);
1679#endif 2614#endif
1680 2615
2616#if EV_CLEANUP_ENABLE
2617 assert (cleanupmax >= cleanupcnt);
2618 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2619#endif
2620
1681#if EV_ASYNC_ENABLE 2621#if EV_ASYNC_ENABLE
1682 assert (asyncmax >= asynccnt); 2622 assert (asyncmax >= asynccnt);
1683 array_verify (EV_A_ (W *)asyncs, asynccnt); 2623 array_verify (EV_A_ (W *)asyncs, asynccnt);
1684#endif 2624#endif
1685 2625
2626#if EV_PREPARE_ENABLE
1686 assert (preparemax >= preparecnt); 2627 assert (preparemax >= preparecnt);
1687 array_verify (EV_A_ (W *)prepares, preparecnt); 2628 array_verify (EV_A_ (W *)prepares, preparecnt);
2629#endif
1688 2630
2631#if EV_CHECK_ENABLE
1689 assert (checkmax >= checkcnt); 2632 assert (checkmax >= checkcnt);
1690 array_verify (EV_A_ (W *)checks, checkcnt); 2633 array_verify (EV_A_ (W *)checks, checkcnt);
2634#endif
1691 2635
1692# if 0 2636# if 0
2637#if EV_CHILD_ENABLE
1693 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2638 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1694 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2639 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2640#endif
1695# endif 2641# endif
1696#endif 2642#endif
1697} 2643}
1698 2644#endif
1699#endif /* multiplicity */
1700 2645
1701#if EV_MULTIPLICITY 2646#if EV_MULTIPLICITY
1702struct ev_loop * 2647struct ev_loop * ecb_cold
1703ev_default_loop_init (unsigned int flags)
1704#else 2648#else
1705int 2649int
2650#endif
1706ev_default_loop (unsigned int flags) 2651ev_default_loop (unsigned int flags) EV_THROW
1707#endif
1708{ 2652{
1709 if (!ev_default_loop_ptr) 2653 if (!ev_default_loop_ptr)
1710 { 2654 {
1711#if EV_MULTIPLICITY 2655#if EV_MULTIPLICITY
1712 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2656 EV_P = ev_default_loop_ptr = &default_loop_struct;
1713#else 2657#else
1714 ev_default_loop_ptr = 1; 2658 ev_default_loop_ptr = 1;
1715#endif 2659#endif
1716 2660
1717 loop_init (EV_A_ flags); 2661 loop_init (EV_A_ flags);
1718 2662
1719 if (ev_backend (EV_A)) 2663 if (ev_backend (EV_A))
1720 { 2664 {
1721#ifndef _WIN32 2665#if EV_CHILD_ENABLE
1722 ev_signal_init (&childev, childcb, SIGCHLD); 2666 ev_signal_init (&childev, childcb, SIGCHLD);
1723 ev_set_priority (&childev, EV_MAXPRI); 2667 ev_set_priority (&childev, EV_MAXPRI);
1724 ev_signal_start (EV_A_ &childev); 2668 ev_signal_start (EV_A_ &childev);
1725 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2669 ev_unref (EV_A); /* child watcher should not keep loop alive */
1726#endif 2670#endif
… …
1731 2675
1732 return ev_default_loop_ptr; 2676 return ev_default_loop_ptr;
1733} 2677}
1734 2678
1735void 2679void
1736ev_default_destroy (void) 2680ev_loop_fork (EV_P) EV_THROW
1737{ 2681{
1738#if EV_MULTIPLICITY
1739 struct ev_loop *loop = ev_default_loop_ptr;
1740#endif
1741
1742 ev_default_loop_ptr = 0;
1743
1744#ifndef _WIN32
1745 ev_ref (EV_A); /* child watcher */
1746 ev_signal_stop (EV_A_ &childev);
1747#endif
1748
1749 loop_destroy (EV_A);
1750}
1751
1752void
1753ev_default_fork (void)
1754{
1755#if EV_MULTIPLICITY
1756 struct ev_loop *loop = ev_default_loop_ptr;
1757#endif
1758
1759 postfork = 1; /* must be in line with ev_loop_fork */ 2682 postfork = 1; /* must be in line with ev_default_fork */
1760} 2683}
1761 2684
1762/*****************************************************************************/ 2685/*****************************************************************************/
1763 2686
1764void 2687void
1765ev_invoke (EV_P_ void *w, int revents) 2688ev_invoke (EV_P_ void *w, int revents)
1766{ 2689{
1767 EV_CB_INVOKE ((W)w, revents); 2690 EV_CB_INVOKE ((W)w, revents);
1768} 2691}
1769 2692
1770inline_speed void 2693unsigned int
1771call_pending (EV_P) 2694ev_pending_count (EV_P) EV_THROW
1772{ 2695{
1773 int pri; 2696 int pri;
2697 unsigned int count = 0;
1774 2698
1775 for (pri = NUMPRI; pri--; ) 2699 for (pri = NUMPRI; pri--; )
2700 count += pendingcnt [pri];
2701
2702 return count;
2703}
2704
2705void noinline
2706ev_invoke_pending (EV_P)
2707{
2708 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
1776 while (pendingcnt [pri]) 2709 while (pendingcnt [pendingpri])
1777 { 2710 {
1778 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2711 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1779
1780 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1781 /* ^ this is no longer true, as pending_w could be here */
1782 2712
1783 p->w->pending = 0; 2713 p->w->pending = 0;
1784 EV_CB_INVOKE (p->w, p->events); 2714 EV_CB_INVOKE (p->w, p->events);
1785 EV_FREQUENT_CHECK; 2715 EV_FREQUENT_CHECK;
1786 } 2716 }
… …
1843 EV_FREQUENT_CHECK; 2773 EV_FREQUENT_CHECK;
1844 feed_reverse (EV_A_ (W)w); 2774 feed_reverse (EV_A_ (W)w);
1845 } 2775 }
1846 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2776 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1847 2777
1848 feed_reverse_done (EV_A_ EV_TIMEOUT); 2778 feed_reverse_done (EV_A_ EV_TIMER);
1849 } 2779 }
1850} 2780}
1851 2781
1852#if EV_PERIODIC_ENABLE 2782#if EV_PERIODIC_ENABLE
2783
2784static void noinline
2785periodic_recalc (EV_P_ ev_periodic *w)
2786{
2787 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2788 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2789
2790 /* the above almost always errs on the low side */
2791 while (at <= ev_rt_now)
2792 {
2793 ev_tstamp nat = at + w->interval;
2794
2795 /* when resolution fails us, we use ev_rt_now */
2796 if (expect_false (nat == at))
2797 {
2798 at = ev_rt_now;
2799 break;
2800 }
2801
2802 at = nat;
2803 }
2804
2805 ev_at (w) = at;
2806}
2807
1853/* make periodics pending */ 2808/* make periodics pending */
1854inline_size void 2809inline_size void
1855periodics_reify (EV_P) 2810periodics_reify (EV_P)
1856{ 2811{
1857 EV_FREQUENT_CHECK; 2812 EV_FREQUENT_CHECK;
… …
1876 ANHE_at_cache (periodics [HEAP0]); 2831 ANHE_at_cache (periodics [HEAP0]);
1877 downheap (periodics, periodiccnt, HEAP0); 2832 downheap (periodics, periodiccnt, HEAP0);
1878 } 2833 }
1879 else if (w->interval) 2834 else if (w->interval)
1880 { 2835 {
1881 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2836 periodic_recalc (EV_A_ w);
1882 /* if next trigger time is not sufficiently in the future, put it there */
1883 /* this might happen because of floating point inexactness */
1884 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1885 {
1886 ev_at (w) += w->interval;
1887
1888 /* if interval is unreasonably low we might still have a time in the past */
1889 /* so correct this. this will make the periodic very inexact, but the user */
1890 /* has effectively asked to get triggered more often than possible */
1891 if (ev_at (w) < ev_rt_now)
1892 ev_at (w) = ev_rt_now;
1893 }
1894
1895 ANHE_at_cache (periodics [HEAP0]); 2837 ANHE_at_cache (periodics [HEAP0]);
1896 downheap (periodics, periodiccnt, HEAP0); 2838 downheap (periodics, periodiccnt, HEAP0);
1897 } 2839 }
1898 else 2840 else
1899 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2841 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1906 feed_reverse_done (EV_A_ EV_PERIODIC); 2848 feed_reverse_done (EV_A_ EV_PERIODIC);
1907 } 2849 }
1908} 2850}
1909 2851
1910/* simply recalculate all periodics */ 2852/* simply recalculate all periodics */
1911/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2853/* TODO: maybe ensure that at least one event happens when jumping forward? */
1912static void noinline 2854static void noinline ecb_cold
1913periodics_reschedule (EV_P) 2855periodics_reschedule (EV_P)
1914{ 2856{
1915 int i; 2857 int i;
1916 2858
1917 /* adjust periodics after time jump */ 2859 /* adjust periodics after time jump */
… …
1920 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2862 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1921 2863
1922 if (w->reschedule_cb) 2864 if (w->reschedule_cb)
1923 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2865 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1924 else if (w->interval) 2866 else if (w->interval)
1925 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2867 periodic_recalc (EV_A_ w);
1926 2868
1927 ANHE_at_cache (periodics [i]); 2869 ANHE_at_cache (periodics [i]);
1928 } 2870 }
1929 2871
1930 reheap (periodics, periodiccnt); 2872 reheap (periodics, periodiccnt);
1931} 2873}
1932#endif 2874#endif
1933 2875
1934/* adjust all timers by a given offset */ 2876/* adjust all timers by a given offset */
1935static void noinline 2877static void noinline ecb_cold
1936timers_reschedule (EV_P_ ev_tstamp adjust) 2878timers_reschedule (EV_P_ ev_tstamp adjust)
1937{ 2879{
1938 int i; 2880 int i;
1939 2881
1940 for (i = 0; i < timercnt; ++i) 2882 for (i = 0; i < timercnt; ++i)
… …
1944 ANHE_at_cache (*he); 2886 ANHE_at_cache (*he);
1945 } 2887 }
1946} 2888}
1947 2889
1948/* fetch new monotonic and realtime times from the kernel */ 2890/* fetch new monotonic and realtime times from the kernel */
1949/* also detetc if there was a timejump, and act accordingly */ 2891/* also detect if there was a timejump, and act accordingly */
1950inline_speed void 2892inline_speed void
1951time_update (EV_P_ ev_tstamp max_block) 2893time_update (EV_P_ ev_tstamp max_block)
1952{ 2894{
1953 int i;
1954
1955#if EV_USE_MONOTONIC 2895#if EV_USE_MONOTONIC
1956 if (expect_true (have_monotonic)) 2896 if (expect_true (have_monotonic))
1957 { 2897 {
2898 int i;
1958 ev_tstamp odiff = rtmn_diff; 2899 ev_tstamp odiff = rtmn_diff;
1959 2900
1960 mn_now = get_clock (); 2901 mn_now = get_clock ();
1961 2902
1962 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2903 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1978 * doesn't hurt either as we only do this on time-jumps or 2919 * doesn't hurt either as we only do this on time-jumps or
1979 * in the unlikely event of having been preempted here. 2920 * in the unlikely event of having been preempted here.
1980 */ 2921 */
1981 for (i = 4; --i; ) 2922 for (i = 4; --i; )
1982 { 2923 {
2924 ev_tstamp diff;
1983 rtmn_diff = ev_rt_now - mn_now; 2925 rtmn_diff = ev_rt_now - mn_now;
1984 2926
2927 diff = odiff - rtmn_diff;
2928
1985 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2929 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1986 return; /* all is well */ 2930 return; /* all is well */
1987 2931
1988 ev_rt_now = ev_time (); 2932 ev_rt_now = ev_time ();
1989 mn_now = get_clock (); 2933 mn_now = get_clock ();
1990 now_floor = mn_now; 2934 now_floor = mn_now;
… …
2012 2956
2013 mn_now = ev_rt_now; 2957 mn_now = ev_rt_now;
2014 } 2958 }
2015} 2959}
2016 2960
2017static int loop_done; 2961int
2018
2019void
2020ev_loop (EV_P_ int flags) 2962ev_run (EV_P_ int flags)
2021{ 2963{
2964#if EV_FEATURE_API
2965 ++loop_depth;
2966#endif
2967
2968 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2969
2022 loop_done = EVUNLOOP_CANCEL; 2970 loop_done = EVBREAK_CANCEL;
2023 2971
2024 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2972 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2025 2973
2026 do 2974 do
2027 { 2975 {
2028#if EV_VERIFY >= 2 2976#if EV_VERIFY >= 2
2029 ev_loop_verify (EV_A); 2977 ev_verify (EV_A);
2030#endif 2978#endif
2031 2979
2032#ifndef _WIN32 2980#ifndef _WIN32
2033 if (expect_false (curpid)) /* penalise the forking check even more */ 2981 if (expect_false (curpid)) /* penalise the forking check even more */
2034 if (expect_false (getpid () != curpid)) 2982 if (expect_false (getpid () != curpid))
… …
2042 /* we might have forked, so queue fork handlers */ 2990 /* we might have forked, so queue fork handlers */
2043 if (expect_false (postfork)) 2991 if (expect_false (postfork))
2044 if (forkcnt) 2992 if (forkcnt)
2045 { 2993 {
2046 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2994 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2047 call_pending (EV_A); 2995 EV_INVOKE_PENDING;
2048 } 2996 }
2049#endif 2997#endif
2050 2998
2999#if EV_PREPARE_ENABLE
2051 /* queue prepare watchers (and execute them) */ 3000 /* queue prepare watchers (and execute them) */
2052 if (expect_false (preparecnt)) 3001 if (expect_false (preparecnt))
2053 { 3002 {
2054 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3003 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2055 call_pending (EV_A); 3004 EV_INVOKE_PENDING;
2056 } 3005 }
3006#endif
3007
3008 if (expect_false (loop_done))
3009 break;
2057 3010
2058 /* we might have forked, so reify kernel state if necessary */ 3011 /* we might have forked, so reify kernel state if necessary */
2059 if (expect_false (postfork)) 3012 if (expect_false (postfork))
2060 loop_fork (EV_A); 3013 loop_fork (EV_A);
2061 3014
… …
2065 /* calculate blocking time */ 3018 /* calculate blocking time */
2066 { 3019 {
2067 ev_tstamp waittime = 0.; 3020 ev_tstamp waittime = 0.;
2068 ev_tstamp sleeptime = 0.; 3021 ev_tstamp sleeptime = 0.;
2069 3022
3023 /* remember old timestamp for io_blocktime calculation */
3024 ev_tstamp prev_mn_now = mn_now;
3025
3026 /* update time to cancel out callback processing overhead */
3027 time_update (EV_A_ 1e100);
3028
3029 /* from now on, we want a pipe-wake-up */
3030 pipe_write_wanted = 1;
3031
3032 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3033
2070 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3034 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2071 { 3035 {
2072 /* update time to cancel out callback processing overhead */
2073 time_update (EV_A_ 1e100);
2074
2075 waittime = MAX_BLOCKTIME; 3036 waittime = MAX_BLOCKTIME;
2076 3037
2077 if (timercnt) 3038 if (timercnt)
2078 { 3039 {
2079 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3040 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2080 if (waittime > to) waittime = to; 3041 if (waittime > to) waittime = to;
2081 } 3042 }
2082 3043
2083#if EV_PERIODIC_ENABLE 3044#if EV_PERIODIC_ENABLE
2084 if (periodiccnt) 3045 if (periodiccnt)
2085 { 3046 {
2086 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3047 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2087 if (waittime > to) waittime = to; 3048 if (waittime > to) waittime = to;
2088 } 3049 }
2089#endif 3050#endif
2090 3051
3052 /* don't let timeouts decrease the waittime below timeout_blocktime */
2091 if (expect_false (waittime < timeout_blocktime)) 3053 if (expect_false (waittime < timeout_blocktime))
2092 waittime = timeout_blocktime; 3054 waittime = timeout_blocktime;
2093 3055
2094 sleeptime = waittime - backend_fudge; 3056 /* at this point, we NEED to wait, so we have to ensure */
3057 /* to pass a minimum nonzero value to the backend */
3058 if (expect_false (waittime < backend_mintime))
3059 waittime = backend_mintime;
2095 3060
3061 /* extra check because io_blocktime is commonly 0 */
2096 if (expect_true (sleeptime > io_blocktime)) 3062 if (expect_false (io_blocktime))
2097 sleeptime = io_blocktime;
2098
2099 if (sleeptime)
2100 { 3063 {
3064 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3065
3066 if (sleeptime > waittime - backend_mintime)
3067 sleeptime = waittime - backend_mintime;
3068
3069 if (expect_true (sleeptime > 0.))
3070 {
2101 ev_sleep (sleeptime); 3071 ev_sleep (sleeptime);
2102 waittime -= sleeptime; 3072 waittime -= sleeptime;
3073 }
2103 } 3074 }
2104 } 3075 }
2105 3076
3077#if EV_FEATURE_API
2106 ++loop_count; 3078 ++loop_count;
3079#endif
3080 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2107 backend_poll (EV_A_ waittime); 3081 backend_poll (EV_A_ waittime);
3082 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3083
3084 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3085
3086 if (pipe_write_skipped)
3087 {
3088 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3089 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3090 }
3091
2108 3092
2109 /* update ev_rt_now, do magic */ 3093 /* update ev_rt_now, do magic */
2110 time_update (EV_A_ waittime + sleeptime); 3094 time_update (EV_A_ waittime + sleeptime);
2111 } 3095 }
2112 3096
… …
2119#if EV_IDLE_ENABLE 3103#if EV_IDLE_ENABLE
2120 /* queue idle watchers unless other events are pending */ 3104 /* queue idle watchers unless other events are pending */
2121 idle_reify (EV_A); 3105 idle_reify (EV_A);
2122#endif 3106#endif
2123 3107
3108#if EV_CHECK_ENABLE
2124 /* queue check watchers, to be executed first */ 3109 /* queue check watchers, to be executed first */
2125 if (expect_false (checkcnt)) 3110 if (expect_false (checkcnt))
2126 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3111 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3112#endif
2127 3113
2128 call_pending (EV_A); 3114 EV_INVOKE_PENDING;
2129 } 3115 }
2130 while (expect_true ( 3116 while (expect_true (
2131 activecnt 3117 activecnt
2132 && !loop_done 3118 && !loop_done
2133 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3119 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2134 )); 3120 ));
2135 3121
2136 if (loop_done == EVUNLOOP_ONE) 3122 if (loop_done == EVBREAK_ONE)
2137 loop_done = EVUNLOOP_CANCEL; 3123 loop_done = EVBREAK_CANCEL;
3124
3125#if EV_FEATURE_API
3126 --loop_depth;
3127#endif
3128
3129 return activecnt;
2138} 3130}
2139 3131
2140void 3132void
2141ev_unloop (EV_P_ int how) 3133ev_break (EV_P_ int how) EV_THROW
2142{ 3134{
2143 loop_done = how; 3135 loop_done = how;
2144} 3136}
2145 3137
2146void 3138void
2147ev_ref (EV_P) 3139ev_ref (EV_P) EV_THROW
2148{ 3140{
2149 ++activecnt; 3141 ++activecnt;
2150} 3142}
2151 3143
2152void 3144void
2153ev_unref (EV_P) 3145ev_unref (EV_P) EV_THROW
2154{ 3146{
2155 --activecnt; 3147 --activecnt;
2156} 3148}
2157 3149
2158void 3150void
2159ev_now_update (EV_P) 3151ev_now_update (EV_P) EV_THROW
2160{ 3152{
2161 time_update (EV_A_ 1e100); 3153 time_update (EV_A_ 1e100);
2162} 3154}
2163 3155
2164void 3156void
2165ev_suspend (EV_P) 3157ev_suspend (EV_P) EV_THROW
2166{ 3158{
2167 ev_now_update (EV_A); 3159 ev_now_update (EV_A);
2168} 3160}
2169 3161
2170void 3162void
2171ev_resume (EV_P) 3163ev_resume (EV_P) EV_THROW
2172{ 3164{
2173 ev_tstamp mn_prev = mn_now; 3165 ev_tstamp mn_prev = mn_now;
2174 3166
2175 ev_now_update (EV_A); 3167 ev_now_update (EV_A);
2176 timers_reschedule (EV_A_ mn_now - mn_prev); 3168 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2193inline_size void 3185inline_size void
2194wlist_del (WL *head, WL elem) 3186wlist_del (WL *head, WL elem)
2195{ 3187{
2196 while (*head) 3188 while (*head)
2197 { 3189 {
2198 if (*head == elem) 3190 if (expect_true (*head == elem))
2199 { 3191 {
2200 *head = elem->next; 3192 *head = elem->next;
2201 return; 3193 break;
2202 } 3194 }
2203 3195
2204 head = &(*head)->next; 3196 head = &(*head)->next;
2205 } 3197 }
2206} 3198}
… …
2215 w->pending = 0; 3207 w->pending = 0;
2216 } 3208 }
2217} 3209}
2218 3210
2219int 3211int
2220ev_clear_pending (EV_P_ void *w) 3212ev_clear_pending (EV_P_ void *w) EV_THROW
2221{ 3213{
2222 W w_ = (W)w; 3214 W w_ = (W)w;
2223 int pending = w_->pending; 3215 int pending = w_->pending;
2224 3216
2225 if (expect_true (pending)) 3217 if (expect_true (pending))
… …
2234} 3226}
2235 3227
2236inline_size void 3228inline_size void
2237pri_adjust (EV_P_ W w) 3229pri_adjust (EV_P_ W w)
2238{ 3230{
2239 int pri = w->priority; 3231 int pri = ev_priority (w);
2240 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3232 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2241 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3233 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2242 w->priority = pri; 3234 ev_set_priority (w, pri);
2243} 3235}
2244 3236
2245inline_speed void 3237inline_speed void
2246ev_start (EV_P_ W w, int active) 3238ev_start (EV_P_ W w, int active)
2247{ 3239{
… …
2258} 3250}
2259 3251
2260/*****************************************************************************/ 3252/*****************************************************************************/
2261 3253
2262void noinline 3254void noinline
2263ev_io_start (EV_P_ ev_io *w) 3255ev_io_start (EV_P_ ev_io *w) EV_THROW
2264{ 3256{
2265 int fd = w->fd; 3257 int fd = w->fd;
2266 3258
2267 if (expect_false (ev_is_active (w))) 3259 if (expect_false (ev_is_active (w)))
2268 return; 3260 return;
2269 3261
2270 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3262 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2271 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3263 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2272 3264
2273 EV_FREQUENT_CHECK; 3265 EV_FREQUENT_CHECK;
2274 3266
2275 ev_start (EV_A_ (W)w, 1); 3267 ev_start (EV_A_ (W)w, 1);
2276 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3268 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2277 wlist_add (&anfds[fd].head, (WL)w); 3269 wlist_add (&anfds[fd].head, (WL)w);
2278 3270
3271 /* common bug, apparently */
3272 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3273
2279 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3274 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2280 w->events &= ~EV__IOFDSET; 3275 w->events &= ~EV__IOFDSET;
2281 3276
2282 EV_FREQUENT_CHECK; 3277 EV_FREQUENT_CHECK;
2283} 3278}
2284 3279
2285void noinline 3280void noinline
2286ev_io_stop (EV_P_ ev_io *w) 3281ev_io_stop (EV_P_ ev_io *w) EV_THROW
2287{ 3282{
2288 clear_pending (EV_A_ (W)w); 3283 clear_pending (EV_A_ (W)w);
2289 if (expect_false (!ev_is_active (w))) 3284 if (expect_false (!ev_is_active (w)))
2290 return; 3285 return;
2291 3286
… …
2294 EV_FREQUENT_CHECK; 3289 EV_FREQUENT_CHECK;
2295 3290
2296 wlist_del (&anfds[w->fd].head, (WL)w); 3291 wlist_del (&anfds[w->fd].head, (WL)w);
2297 ev_stop (EV_A_ (W)w); 3292 ev_stop (EV_A_ (W)w);
2298 3293
2299 fd_change (EV_A_ w->fd, 1); 3294 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2300 3295
2301 EV_FREQUENT_CHECK; 3296 EV_FREQUENT_CHECK;
2302} 3297}
2303 3298
2304void noinline 3299void noinline
2305ev_timer_start (EV_P_ ev_timer *w) 3300ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2306{ 3301{
2307 if (expect_false (ev_is_active (w))) 3302 if (expect_false (ev_is_active (w)))
2308 return; 3303 return;
2309 3304
2310 ev_at (w) += mn_now; 3305 ev_at (w) += mn_now;
… …
2324 3319
2325 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3320 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2326} 3321}
2327 3322
2328void noinline 3323void noinline
2329ev_timer_stop (EV_P_ ev_timer *w) 3324ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2330{ 3325{
2331 clear_pending (EV_A_ (W)w); 3326 clear_pending (EV_A_ (W)w);
2332 if (expect_false (!ev_is_active (w))) 3327 if (expect_false (!ev_is_active (w)))
2333 return; 3328 return;
2334 3329
… …
2346 timers [active] = timers [timercnt + HEAP0]; 3341 timers [active] = timers [timercnt + HEAP0];
2347 adjustheap (timers, timercnt, active); 3342 adjustheap (timers, timercnt, active);
2348 } 3343 }
2349 } 3344 }
2350 3345
2351 EV_FREQUENT_CHECK;
2352
2353 ev_at (w) -= mn_now; 3346 ev_at (w) -= mn_now;
2354 3347
2355 ev_stop (EV_A_ (W)w); 3348 ev_stop (EV_A_ (W)w);
3349
3350 EV_FREQUENT_CHECK;
2356} 3351}
2357 3352
2358void noinline 3353void noinline
2359ev_timer_again (EV_P_ ev_timer *w) 3354ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2360{ 3355{
2361 EV_FREQUENT_CHECK; 3356 EV_FREQUENT_CHECK;
3357
3358 clear_pending (EV_A_ (W)w);
2362 3359
2363 if (ev_is_active (w)) 3360 if (ev_is_active (w))
2364 { 3361 {
2365 if (w->repeat) 3362 if (w->repeat)
2366 { 3363 {
… …
2378 } 3375 }
2379 3376
2380 EV_FREQUENT_CHECK; 3377 EV_FREQUENT_CHECK;
2381} 3378}
2382 3379
3380ev_tstamp
3381ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3382{
3383 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3384}
3385
2383#if EV_PERIODIC_ENABLE 3386#if EV_PERIODIC_ENABLE
2384void noinline 3387void noinline
2385ev_periodic_start (EV_P_ ev_periodic *w) 3388ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2386{ 3389{
2387 if (expect_false (ev_is_active (w))) 3390 if (expect_false (ev_is_active (w)))
2388 return; 3391 return;
2389 3392
2390 if (w->reschedule_cb) 3393 if (w->reschedule_cb)
2391 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3394 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2392 else if (w->interval) 3395 else if (w->interval)
2393 { 3396 {
2394 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3397 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2395 /* this formula differs from the one in periodic_reify because we do not always round up */ 3398 periodic_recalc (EV_A_ w);
2396 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2397 } 3399 }
2398 else 3400 else
2399 ev_at (w) = w->offset; 3401 ev_at (w) = w->offset;
2400 3402
2401 EV_FREQUENT_CHECK; 3403 EV_FREQUENT_CHECK;
… …
2411 3413
2412 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3414 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2413} 3415}
2414 3416
2415void noinline 3417void noinline
2416ev_periodic_stop (EV_P_ ev_periodic *w) 3418ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2417{ 3419{
2418 clear_pending (EV_A_ (W)w); 3420 clear_pending (EV_A_ (W)w);
2419 if (expect_false (!ev_is_active (w))) 3421 if (expect_false (!ev_is_active (w)))
2420 return; 3422 return;
2421 3423
… …
2433 periodics [active] = periodics [periodiccnt + HEAP0]; 3435 periodics [active] = periodics [periodiccnt + HEAP0];
2434 adjustheap (periodics, periodiccnt, active); 3436 adjustheap (periodics, periodiccnt, active);
2435 } 3437 }
2436 } 3438 }
2437 3439
2438 EV_FREQUENT_CHECK;
2439
2440 ev_stop (EV_A_ (W)w); 3440 ev_stop (EV_A_ (W)w);
3441
3442 EV_FREQUENT_CHECK;
2441} 3443}
2442 3444
2443void noinline 3445void noinline
2444ev_periodic_again (EV_P_ ev_periodic *w) 3446ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2445{ 3447{
2446 /* TODO: use adjustheap and recalculation */ 3448 /* TODO: use adjustheap and recalculation */
2447 ev_periodic_stop (EV_A_ w); 3449 ev_periodic_stop (EV_A_ w);
2448 ev_periodic_start (EV_A_ w); 3450 ev_periodic_start (EV_A_ w);
2449} 3451}
… …
2451 3453
2452#ifndef SA_RESTART 3454#ifndef SA_RESTART
2453# define SA_RESTART 0 3455# define SA_RESTART 0
2454#endif 3456#endif
2455 3457
3458#if EV_SIGNAL_ENABLE
3459
2456void noinline 3460void noinline
2457ev_signal_start (EV_P_ ev_signal *w) 3461ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2458{ 3462{
2459#if EV_MULTIPLICITY
2460 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2461#endif
2462 if (expect_false (ev_is_active (w))) 3463 if (expect_false (ev_is_active (w)))
2463 return; 3464 return;
2464 3465
2465 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3466 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2466 3467
2467 evpipe_init (EV_A); 3468#if EV_MULTIPLICITY
3469 assert (("libev: a signal must not be attached to two different loops",
3470 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2468 3471
2469 EV_FREQUENT_CHECK; 3472 signals [w->signum - 1].loop = EV_A;
3473#endif
2470 3474
3475 EV_FREQUENT_CHECK;
3476
3477#if EV_USE_SIGNALFD
3478 if (sigfd == -2)
2471 { 3479 {
2472#ifndef _WIN32 3480 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2473 sigset_t full, prev; 3481 if (sigfd < 0 && errno == EINVAL)
2474 sigfillset (&full); 3482 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2475 sigprocmask (SIG_SETMASK, &full, &prev);
2476#endif
2477 3483
2478 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3484 if (sigfd >= 0)
3485 {
3486 fd_intern (sigfd); /* doing it twice will not hurt */
2479 3487
2480#ifndef _WIN32 3488 sigemptyset (&sigfd_set);
2481 sigprocmask (SIG_SETMASK, &prev, 0); 3489
2482#endif 3490 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3491 ev_set_priority (&sigfd_w, EV_MAXPRI);
3492 ev_io_start (EV_A_ &sigfd_w);
3493 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3494 }
2483 } 3495 }
3496
3497 if (sigfd >= 0)
3498 {
3499 /* TODO: check .head */
3500 sigaddset (&sigfd_set, w->signum);
3501 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3502
3503 signalfd (sigfd, &sigfd_set, 0);
3504 }
3505#endif
2484 3506
2485 ev_start (EV_A_ (W)w, 1); 3507 ev_start (EV_A_ (W)w, 1);
2486 wlist_add (&signals [w->signum - 1].head, (WL)w); 3508 wlist_add (&signals [w->signum - 1].head, (WL)w);
2487 3509
2488 if (!((WL)w)->next) 3510 if (!((WL)w)->next)
3511# if EV_USE_SIGNALFD
3512 if (sigfd < 0) /*TODO*/
3513# endif
2489 { 3514 {
2490#if _WIN32 3515# ifdef _WIN32
3516 evpipe_init (EV_A);
3517
2491 signal (w->signum, ev_sighandler); 3518 signal (w->signum, ev_sighandler);
2492#else 3519# else
2493 struct sigaction sa; 3520 struct sigaction sa;
3521
3522 evpipe_init (EV_A);
3523
2494 sa.sa_handler = ev_sighandler; 3524 sa.sa_handler = ev_sighandler;
2495 sigfillset (&sa.sa_mask); 3525 sigfillset (&sa.sa_mask);
2496 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3526 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2497 sigaction (w->signum, &sa, 0); 3527 sigaction (w->signum, &sa, 0);
3528
3529 if (origflags & EVFLAG_NOSIGMASK)
3530 {
3531 sigemptyset (&sa.sa_mask);
3532 sigaddset (&sa.sa_mask, w->signum);
3533 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3534 }
2498#endif 3535#endif
2499 } 3536 }
2500 3537
2501 EV_FREQUENT_CHECK; 3538 EV_FREQUENT_CHECK;
2502} 3539}
2503 3540
2504void noinline 3541void noinline
2505ev_signal_stop (EV_P_ ev_signal *w) 3542ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2506{ 3543{
2507 clear_pending (EV_A_ (W)w); 3544 clear_pending (EV_A_ (W)w);
2508 if (expect_false (!ev_is_active (w))) 3545 if (expect_false (!ev_is_active (w)))
2509 return; 3546 return;
2510 3547
… …
2512 3549
2513 wlist_del (&signals [w->signum - 1].head, (WL)w); 3550 wlist_del (&signals [w->signum - 1].head, (WL)w);
2514 ev_stop (EV_A_ (W)w); 3551 ev_stop (EV_A_ (W)w);
2515 3552
2516 if (!signals [w->signum - 1].head) 3553 if (!signals [w->signum - 1].head)
3554 {
3555#if EV_MULTIPLICITY
3556 signals [w->signum - 1].loop = 0; /* unattach from signal */
3557#endif
3558#if EV_USE_SIGNALFD
3559 if (sigfd >= 0)
3560 {
3561 sigset_t ss;
3562
3563 sigemptyset (&ss);
3564 sigaddset (&ss, w->signum);
3565 sigdelset (&sigfd_set, w->signum);
3566
3567 signalfd (sigfd, &sigfd_set, 0);
3568 sigprocmask (SIG_UNBLOCK, &ss, 0);
3569 }
3570 else
3571#endif
2517 signal (w->signum, SIG_DFL); 3572 signal (w->signum, SIG_DFL);
3573 }
2518 3574
2519 EV_FREQUENT_CHECK; 3575 EV_FREQUENT_CHECK;
2520} 3576}
3577
3578#endif
3579
3580#if EV_CHILD_ENABLE
2521 3581
2522void 3582void
2523ev_child_start (EV_P_ ev_child *w) 3583ev_child_start (EV_P_ ev_child *w) EV_THROW
2524{ 3584{
2525#if EV_MULTIPLICITY 3585#if EV_MULTIPLICITY
2526 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3586 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2527#endif 3587#endif
2528 if (expect_false (ev_is_active (w))) 3588 if (expect_false (ev_is_active (w)))
2529 return; 3589 return;
2530 3590
2531 EV_FREQUENT_CHECK; 3591 EV_FREQUENT_CHECK;
2532 3592
2533 ev_start (EV_A_ (W)w, 1); 3593 ev_start (EV_A_ (W)w, 1);
2534 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3594 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2535 3595
2536 EV_FREQUENT_CHECK; 3596 EV_FREQUENT_CHECK;
2537} 3597}
2538 3598
2539void 3599void
2540ev_child_stop (EV_P_ ev_child *w) 3600ev_child_stop (EV_P_ ev_child *w) EV_THROW
2541{ 3601{
2542 clear_pending (EV_A_ (W)w); 3602 clear_pending (EV_A_ (W)w);
2543 if (expect_false (!ev_is_active (w))) 3603 if (expect_false (!ev_is_active (w)))
2544 return; 3604 return;
2545 3605
2546 EV_FREQUENT_CHECK; 3606 EV_FREQUENT_CHECK;
2547 3607
2548 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3608 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2549 ev_stop (EV_A_ (W)w); 3609 ev_stop (EV_A_ (W)w);
2550 3610
2551 EV_FREQUENT_CHECK; 3611 EV_FREQUENT_CHECK;
2552} 3612}
3613
3614#endif
2553 3615
2554#if EV_STAT_ENABLE 3616#if EV_STAT_ENABLE
2555 3617
2556# ifdef _WIN32 3618# ifdef _WIN32
2557# undef lstat 3619# undef lstat
… …
2563#define MIN_STAT_INTERVAL 0.1074891 3625#define MIN_STAT_INTERVAL 0.1074891
2564 3626
2565static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3627static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2566 3628
2567#if EV_USE_INOTIFY 3629#if EV_USE_INOTIFY
2568# define EV_INOTIFY_BUFSIZE 8192 3630
3631/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3632# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2569 3633
2570static void noinline 3634static void noinline
2571infy_add (EV_P_ ev_stat *w) 3635infy_add (EV_P_ ev_stat *w)
2572{ 3636{
2573 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); 3637 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);
2574 3638
2575 if (w->wd < 0) 3639 if (w->wd >= 0)
3640 {
3641 struct statfs sfs;
3642
3643 /* now local changes will be tracked by inotify, but remote changes won't */
3644 /* unless the filesystem is known to be local, we therefore still poll */
3645 /* also do poll on <2.6.25, but with normal frequency */
3646
3647 if (!fs_2625)
3648 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3649 else if (!statfs (w->path, &sfs)
3650 && (sfs.f_type == 0x1373 /* devfs */
3651 || sfs.f_type == 0xEF53 /* ext2/3 */
3652 || sfs.f_type == 0x3153464a /* jfs */
3653 || sfs.f_type == 0x52654973 /* reiser3 */
3654 || sfs.f_type == 0x01021994 /* tempfs */
3655 || sfs.f_type == 0x58465342 /* xfs */))
3656 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3657 else
3658 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2576 { 3659 }
3660 else
3661 {
3662 /* can't use inotify, continue to stat */
2577 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3663 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2578 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2579 3664
2580 /* monitor some parent directory for speedup hints */ 3665 /* if path is not there, monitor some parent directory for speedup hints */
2581 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3666 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2582 /* but an efficiency issue only */ 3667 /* but an efficiency issue only */
2583 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3668 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2584 { 3669 {
2585 char path [4096]; 3670 char path [4096];
… …
2595 if (!pend || pend == path) 3680 if (!pend || pend == path)
2596 break; 3681 break;
2597 3682
2598 *pend = 0; 3683 *pend = 0;
2599 w->wd = inotify_add_watch (fs_fd, path, mask); 3684 w->wd = inotify_add_watch (fs_fd, path, mask);
2600 } 3685 }
2601 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3686 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2602 } 3687 }
2603 } 3688 }
2604 3689
2605 if (w->wd >= 0) 3690 if (w->wd >= 0)
2606 {
2607 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3691 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2608 3692
2609 /* now local changes will be tracked by inotify, but remote changes won't */ 3693 /* now re-arm timer, if required */
2610 /* unless the filesystem it known to be local, we therefore still poll */ 3694 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2611 /* also do poll on <2.6.25, but with normal frequency */
2612 struct statfs sfs;
2613
2614 if (fs_2625 && !statfs (w->path, &sfs))
2615 if (sfs.f_type == 0x1373 /* devfs */
2616 || sfs.f_type == 0xEF53 /* ext2/3 */
2617 || sfs.f_type == 0x3153464a /* jfs */
2618 || sfs.f_type == 0x52654973 /* reiser3 */
2619 || sfs.f_type == 0x01021994 /* tempfs */
2620 || sfs.f_type == 0x58465342 /* xfs */)
2621 return;
2622
2623 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2624 ev_timer_again (EV_A_ &w->timer); 3695 ev_timer_again (EV_A_ &w->timer);
2625 } 3696 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2626} 3697}
2627 3698
2628static void noinline 3699static void noinline
2629infy_del (EV_P_ ev_stat *w) 3700infy_del (EV_P_ ev_stat *w)
2630{ 3701{
… …
2633 3704
2634 if (wd < 0) 3705 if (wd < 0)
2635 return; 3706 return;
2636 3707
2637 w->wd = -2; 3708 w->wd = -2;
2638 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3709 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2639 wlist_del (&fs_hash [slot].head, (WL)w); 3710 wlist_del (&fs_hash [slot].head, (WL)w);
2640 3711
2641 /* remove this watcher, if others are watching it, they will rearm */ 3712 /* remove this watcher, if others are watching it, they will rearm */
2642 inotify_rm_watch (fs_fd, wd); 3713 inotify_rm_watch (fs_fd, wd);
2643} 3714}
… …
2645static void noinline 3716static void noinline
2646infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3717infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2647{ 3718{
2648 if (slot < 0) 3719 if (slot < 0)
2649 /* overflow, need to check for all hash slots */ 3720 /* overflow, need to check for all hash slots */
2650 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3721 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2651 infy_wd (EV_A_ slot, wd, ev); 3722 infy_wd (EV_A_ slot, wd, ev);
2652 else 3723 else
2653 { 3724 {
2654 WL w_; 3725 WL w_;
2655 3726
2656 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3727 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2657 { 3728 {
2658 ev_stat *w = (ev_stat *)w_; 3729 ev_stat *w = (ev_stat *)w_;
2659 w_ = w_->next; /* lets us remove this watcher and all before it */ 3730 w_ = w_->next; /* lets us remove this watcher and all before it */
2660 3731
2661 if (w->wd == wd || wd == -1) 3732 if (w->wd == wd || wd == -1)
2662 { 3733 {
2663 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3734 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2664 { 3735 {
2665 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3736 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2666 w->wd = -1; 3737 w->wd = -1;
2667 infy_add (EV_A_ w); /* re-add, no matter what */ 3738 infy_add (EV_A_ w); /* re-add, no matter what */
2668 } 3739 }
2669 3740
2670 stat_timer_cb (EV_A_ &w->timer, 0); 3741 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2675 3746
2676static void 3747static void
2677infy_cb (EV_P_ ev_io *w, int revents) 3748infy_cb (EV_P_ ev_io *w, int revents)
2678{ 3749{
2679 char buf [EV_INOTIFY_BUFSIZE]; 3750 char buf [EV_INOTIFY_BUFSIZE];
2680 struct inotify_event *ev = (struct inotify_event *)buf;
2681 int ofs; 3751 int ofs;
2682 int len = read (fs_fd, buf, sizeof (buf)); 3752 int len = read (fs_fd, buf, sizeof (buf));
2683 3753
2684 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3754 for (ofs = 0; ofs < len; )
3755 {
3756 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2685 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3757 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3758 ofs += sizeof (struct inotify_event) + ev->len;
3759 }
2686} 3760}
2687 3761
2688inline_size void 3762inline_size void ecb_cold
2689check_2625 (EV_P) 3763ev_check_2625 (EV_P)
2690{ 3764{
2691 /* kernels < 2.6.25 are borked 3765 /* kernels < 2.6.25 are borked
2692 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3766 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2693 */ 3767 */
2694 struct utsname buf; 3768 if (ev_linux_version () < 0x020619)
2695 int major, minor, micro;
2696
2697 if (uname (&buf))
2698 return; 3769 return;
2699 3770
2700 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2701 return;
2702
2703 if (major < 2
2704 || (major == 2 && minor < 6)
2705 || (major == 2 && minor == 6 && micro < 25))
2706 return;
2707
2708 fs_2625 = 1; 3771 fs_2625 = 1;
3772}
3773
3774inline_size int
3775infy_newfd (void)
3776{
3777#if defined IN_CLOEXEC && defined IN_NONBLOCK
3778 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3779 if (fd >= 0)
3780 return fd;
3781#endif
3782 return inotify_init ();
2709} 3783}
2710 3784
2711inline_size void 3785inline_size void
2712infy_init (EV_P) 3786infy_init (EV_P)
2713{ 3787{
2714 if (fs_fd != -2) 3788 if (fs_fd != -2)
2715 return; 3789 return;
2716 3790
2717 fs_fd = -1; 3791 fs_fd = -1;
2718 3792
2719 check_2625 (EV_A); 3793 ev_check_2625 (EV_A);
2720 3794
2721 fs_fd = inotify_init (); 3795 fs_fd = infy_newfd ();
2722 3796
2723 if (fs_fd >= 0) 3797 if (fs_fd >= 0)
2724 { 3798 {
3799 fd_intern (fs_fd);
2725 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3800 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2726 ev_set_priority (&fs_w, EV_MAXPRI); 3801 ev_set_priority (&fs_w, EV_MAXPRI);
2727 ev_io_start (EV_A_ &fs_w); 3802 ev_io_start (EV_A_ &fs_w);
3803 ev_unref (EV_A);
2728 } 3804 }
2729} 3805}
2730 3806
2731inline_size void 3807inline_size void
2732infy_fork (EV_P) 3808infy_fork (EV_P)
… …
2734 int slot; 3810 int slot;
2735 3811
2736 if (fs_fd < 0) 3812 if (fs_fd < 0)
2737 return; 3813 return;
2738 3814
3815 ev_ref (EV_A);
3816 ev_io_stop (EV_A_ &fs_w);
2739 close (fs_fd); 3817 close (fs_fd);
2740 fs_fd = inotify_init (); 3818 fs_fd = infy_newfd ();
2741 3819
3820 if (fs_fd >= 0)
3821 {
3822 fd_intern (fs_fd);
3823 ev_io_set (&fs_w, fs_fd, EV_READ);
3824 ev_io_start (EV_A_ &fs_w);
3825 ev_unref (EV_A);
3826 }
3827
2742 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3828 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2743 { 3829 {
2744 WL w_ = fs_hash [slot].head; 3830 WL w_ = fs_hash [slot].head;
2745 fs_hash [slot].head = 0; 3831 fs_hash [slot].head = 0;
2746 3832
2747 while (w_) 3833 while (w_)
… …
2752 w->wd = -1; 3838 w->wd = -1;
2753 3839
2754 if (fs_fd >= 0) 3840 if (fs_fd >= 0)
2755 infy_add (EV_A_ w); /* re-add, no matter what */ 3841 infy_add (EV_A_ w); /* re-add, no matter what */
2756 else 3842 else
3843 {
3844 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3845 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2757 ev_timer_again (EV_A_ &w->timer); 3846 ev_timer_again (EV_A_ &w->timer);
3847 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3848 }
2758 } 3849 }
2759 } 3850 }
2760} 3851}
2761 3852
2762#endif 3853#endif
… …
2766#else 3857#else
2767# define EV_LSTAT(p,b) lstat (p, b) 3858# define EV_LSTAT(p,b) lstat (p, b)
2768#endif 3859#endif
2769 3860
2770void 3861void
2771ev_stat_stat (EV_P_ ev_stat *w) 3862ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2772{ 3863{
2773 if (lstat (w->path, &w->attr) < 0) 3864 if (lstat (w->path, &w->attr) < 0)
2774 w->attr.st_nlink = 0; 3865 w->attr.st_nlink = 0;
2775 else if (!w->attr.st_nlink) 3866 else if (!w->attr.st_nlink)
2776 w->attr.st_nlink = 1; 3867 w->attr.st_nlink = 1;
… …
2779static void noinline 3870static void noinline
2780stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3871stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2781{ 3872{
2782 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3873 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2783 3874
2784 /* we copy this here each the time so that */ 3875 ev_statdata prev = w->attr;
2785 /* prev has the old value when the callback gets invoked */
2786 w->prev = w->attr;
2787 ev_stat_stat (EV_A_ w); 3876 ev_stat_stat (EV_A_ w);
2788 3877
2789 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3878 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2790 if ( 3879 if (
2791 w->prev.st_dev != w->attr.st_dev 3880 prev.st_dev != w->attr.st_dev
2792 || w->prev.st_ino != w->attr.st_ino 3881 || prev.st_ino != w->attr.st_ino
2793 || w->prev.st_mode != w->attr.st_mode 3882 || prev.st_mode != w->attr.st_mode
2794 || w->prev.st_nlink != w->attr.st_nlink 3883 || prev.st_nlink != w->attr.st_nlink
2795 || w->prev.st_uid != w->attr.st_uid 3884 || prev.st_uid != w->attr.st_uid
2796 || w->prev.st_gid != w->attr.st_gid 3885 || prev.st_gid != w->attr.st_gid
2797 || w->prev.st_rdev != w->attr.st_rdev 3886 || prev.st_rdev != w->attr.st_rdev
2798 || w->prev.st_size != w->attr.st_size 3887 || prev.st_size != w->attr.st_size
2799 || w->prev.st_atime != w->attr.st_atime 3888 || prev.st_atime != w->attr.st_atime
2800 || w->prev.st_mtime != w->attr.st_mtime 3889 || prev.st_mtime != w->attr.st_mtime
2801 || w->prev.st_ctime != w->attr.st_ctime 3890 || prev.st_ctime != w->attr.st_ctime
2802 ) { 3891 ) {
3892 /* we only update w->prev on actual differences */
3893 /* in case we test more often than invoke the callback, */
3894 /* to ensure that prev is always different to attr */
3895 w->prev = prev;
3896
2803 #if EV_USE_INOTIFY 3897 #if EV_USE_INOTIFY
2804 if (fs_fd >= 0) 3898 if (fs_fd >= 0)
2805 { 3899 {
2806 infy_del (EV_A_ w); 3900 infy_del (EV_A_ w);
2807 infy_add (EV_A_ w); 3901 infy_add (EV_A_ w);
… …
2812 ev_feed_event (EV_A_ w, EV_STAT); 3906 ev_feed_event (EV_A_ w, EV_STAT);
2813 } 3907 }
2814} 3908}
2815 3909
2816void 3910void
2817ev_stat_start (EV_P_ ev_stat *w) 3911ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2818{ 3912{
2819 if (expect_false (ev_is_active (w))) 3913 if (expect_false (ev_is_active (w)))
2820 return; 3914 return;
2821 3915
2822 ev_stat_stat (EV_A_ w); 3916 ev_stat_stat (EV_A_ w);
… …
2832 3926
2833 if (fs_fd >= 0) 3927 if (fs_fd >= 0)
2834 infy_add (EV_A_ w); 3928 infy_add (EV_A_ w);
2835 else 3929 else
2836#endif 3930#endif
3931 {
2837 ev_timer_again (EV_A_ &w->timer); 3932 ev_timer_again (EV_A_ &w->timer);
3933 ev_unref (EV_A);
3934 }
2838 3935
2839 ev_start (EV_A_ (W)w, 1); 3936 ev_start (EV_A_ (W)w, 1);
2840 3937
2841 EV_FREQUENT_CHECK; 3938 EV_FREQUENT_CHECK;
2842} 3939}
2843 3940
2844void 3941void
2845ev_stat_stop (EV_P_ ev_stat *w) 3942ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2846{ 3943{
2847 clear_pending (EV_A_ (W)w); 3944 clear_pending (EV_A_ (W)w);
2848 if (expect_false (!ev_is_active (w))) 3945 if (expect_false (!ev_is_active (w)))
2849 return; 3946 return;
2850 3947
2851 EV_FREQUENT_CHECK; 3948 EV_FREQUENT_CHECK;
2852 3949
2853#if EV_USE_INOTIFY 3950#if EV_USE_INOTIFY
2854 infy_del (EV_A_ w); 3951 infy_del (EV_A_ w);
2855#endif 3952#endif
3953
3954 if (ev_is_active (&w->timer))
3955 {
3956 ev_ref (EV_A);
2856 ev_timer_stop (EV_A_ &w->timer); 3957 ev_timer_stop (EV_A_ &w->timer);
3958 }
2857 3959
2858 ev_stop (EV_A_ (W)w); 3960 ev_stop (EV_A_ (W)w);
2859 3961
2860 EV_FREQUENT_CHECK; 3962 EV_FREQUENT_CHECK;
2861} 3963}
2862#endif 3964#endif
2863 3965
2864#if EV_IDLE_ENABLE 3966#if EV_IDLE_ENABLE
2865void 3967void
2866ev_idle_start (EV_P_ ev_idle *w) 3968ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2867{ 3969{
2868 if (expect_false (ev_is_active (w))) 3970 if (expect_false (ev_is_active (w)))
2869 return; 3971 return;
2870 3972
2871 pri_adjust (EV_A_ (W)w); 3973 pri_adjust (EV_A_ (W)w);
… …
2884 3986
2885 EV_FREQUENT_CHECK; 3987 EV_FREQUENT_CHECK;
2886} 3988}
2887 3989
2888void 3990void
2889ev_idle_stop (EV_P_ ev_idle *w) 3991ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2890{ 3992{
2891 clear_pending (EV_A_ (W)w); 3993 clear_pending (EV_A_ (W)w);
2892 if (expect_false (!ev_is_active (w))) 3994 if (expect_false (!ev_is_active (w)))
2893 return; 3995 return;
2894 3996
… …
2906 4008
2907 EV_FREQUENT_CHECK; 4009 EV_FREQUENT_CHECK;
2908} 4010}
2909#endif 4011#endif
2910 4012
4013#if EV_PREPARE_ENABLE
2911void 4014void
2912ev_prepare_start (EV_P_ ev_prepare *w) 4015ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2913{ 4016{
2914 if (expect_false (ev_is_active (w))) 4017 if (expect_false (ev_is_active (w)))
2915 return; 4018 return;
2916 4019
2917 EV_FREQUENT_CHECK; 4020 EV_FREQUENT_CHECK;
… …
2922 4025
2923 EV_FREQUENT_CHECK; 4026 EV_FREQUENT_CHECK;
2924} 4027}
2925 4028
2926void 4029void
2927ev_prepare_stop (EV_P_ ev_prepare *w) 4030ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2928{ 4031{
2929 clear_pending (EV_A_ (W)w); 4032 clear_pending (EV_A_ (W)w);
2930 if (expect_false (!ev_is_active (w))) 4033 if (expect_false (!ev_is_active (w)))
2931 return; 4034 return;
2932 4035
… …
2941 4044
2942 ev_stop (EV_A_ (W)w); 4045 ev_stop (EV_A_ (W)w);
2943 4046
2944 EV_FREQUENT_CHECK; 4047 EV_FREQUENT_CHECK;
2945} 4048}
4049#endif
2946 4050
4051#if EV_CHECK_ENABLE
2947void 4052void
2948ev_check_start (EV_P_ ev_check *w) 4053ev_check_start (EV_P_ ev_check *w) EV_THROW
2949{ 4054{
2950 if (expect_false (ev_is_active (w))) 4055 if (expect_false (ev_is_active (w)))
2951 return; 4056 return;
2952 4057
2953 EV_FREQUENT_CHECK; 4058 EV_FREQUENT_CHECK;
… …
2958 4063
2959 EV_FREQUENT_CHECK; 4064 EV_FREQUENT_CHECK;
2960} 4065}
2961 4066
2962void 4067void
2963ev_check_stop (EV_P_ ev_check *w) 4068ev_check_stop (EV_P_ ev_check *w) EV_THROW
2964{ 4069{
2965 clear_pending (EV_A_ (W)w); 4070 clear_pending (EV_A_ (W)w);
2966 if (expect_false (!ev_is_active (w))) 4071 if (expect_false (!ev_is_active (w)))
2967 return; 4072 return;
2968 4073
… …
2977 4082
2978 ev_stop (EV_A_ (W)w); 4083 ev_stop (EV_A_ (W)w);
2979 4084
2980 EV_FREQUENT_CHECK; 4085 EV_FREQUENT_CHECK;
2981} 4086}
4087#endif
2982 4088
2983#if EV_EMBED_ENABLE 4089#if EV_EMBED_ENABLE
2984void noinline 4090void noinline
2985ev_embed_sweep (EV_P_ ev_embed *w) 4091ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2986{ 4092{
2987 ev_loop (w->other, EVLOOP_NONBLOCK); 4093 ev_run (w->other, EVRUN_NOWAIT);
2988} 4094}
2989 4095
2990static void 4096static void
2991embed_io_cb (EV_P_ ev_io *io, int revents) 4097embed_io_cb (EV_P_ ev_io *io, int revents)
2992{ 4098{
2993 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4099 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2994 4100
2995 if (ev_cb (w)) 4101 if (ev_cb (w))
2996 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4102 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2997 else 4103 else
2998 ev_loop (w->other, EVLOOP_NONBLOCK); 4104 ev_run (w->other, EVRUN_NOWAIT);
2999} 4105}
3000 4106
3001static void 4107static void
3002embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4108embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3003{ 4109{
3004 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4110 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3005 4111
3006 { 4112 {
3007 struct ev_loop *loop = w->other; 4113 EV_P = w->other;
3008 4114
3009 while (fdchangecnt) 4115 while (fdchangecnt)
3010 { 4116 {
3011 fd_reify (EV_A); 4117 fd_reify (EV_A);
3012 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4118 ev_run (EV_A_ EVRUN_NOWAIT);
3013 } 4119 }
3014 } 4120 }
3015} 4121}
3016 4122
3017static void 4123static void
… …
3020 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4126 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3021 4127
3022 ev_embed_stop (EV_A_ w); 4128 ev_embed_stop (EV_A_ w);
3023 4129
3024 { 4130 {
3025 struct ev_loop *loop = w->other; 4131 EV_P = w->other;
3026 4132
3027 ev_loop_fork (EV_A); 4133 ev_loop_fork (EV_A);
3028 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4134 ev_run (EV_A_ EVRUN_NOWAIT);
3029 } 4135 }
3030 4136
3031 ev_embed_start (EV_A_ w); 4137 ev_embed_start (EV_A_ w);
3032} 4138}
3033 4139
… …
3038 ev_idle_stop (EV_A_ idle); 4144 ev_idle_stop (EV_A_ idle);
3039} 4145}
3040#endif 4146#endif
3041 4147
3042void 4148void
3043ev_embed_start (EV_P_ ev_embed *w) 4149ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3044{ 4150{
3045 if (expect_false (ev_is_active (w))) 4151 if (expect_false (ev_is_active (w)))
3046 return; 4152 return;
3047 4153
3048 { 4154 {
3049 struct ev_loop *loop = w->other; 4155 EV_P = w->other;
3050 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4156 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3051 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4157 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3052 } 4158 }
3053 4159
3054 EV_FREQUENT_CHECK; 4160 EV_FREQUENT_CHECK;
… …
3069 4175
3070 EV_FREQUENT_CHECK; 4176 EV_FREQUENT_CHECK;
3071} 4177}
3072 4178
3073void 4179void
3074ev_embed_stop (EV_P_ ev_embed *w) 4180ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3075{ 4181{
3076 clear_pending (EV_A_ (W)w); 4182 clear_pending (EV_A_ (W)w);
3077 if (expect_false (!ev_is_active (w))) 4183 if (expect_false (!ev_is_active (w)))
3078 return; 4184 return;
3079 4185
… …
3081 4187
3082 ev_io_stop (EV_A_ &w->io); 4188 ev_io_stop (EV_A_ &w->io);
3083 ev_prepare_stop (EV_A_ &w->prepare); 4189 ev_prepare_stop (EV_A_ &w->prepare);
3084 ev_fork_stop (EV_A_ &w->fork); 4190 ev_fork_stop (EV_A_ &w->fork);
3085 4191
4192 ev_stop (EV_A_ (W)w);
4193
3086 EV_FREQUENT_CHECK; 4194 EV_FREQUENT_CHECK;
3087} 4195}
3088#endif 4196#endif
3089 4197
3090#if EV_FORK_ENABLE 4198#if EV_FORK_ENABLE
3091void 4199void
3092ev_fork_start (EV_P_ ev_fork *w) 4200ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3093{ 4201{
3094 if (expect_false (ev_is_active (w))) 4202 if (expect_false (ev_is_active (w)))
3095 return; 4203 return;
3096 4204
3097 EV_FREQUENT_CHECK; 4205 EV_FREQUENT_CHECK;
… …
3102 4210
3103 EV_FREQUENT_CHECK; 4211 EV_FREQUENT_CHECK;
3104} 4212}
3105 4213
3106void 4214void
3107ev_fork_stop (EV_P_ ev_fork *w) 4215ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3108{ 4216{
3109 clear_pending (EV_A_ (W)w); 4217 clear_pending (EV_A_ (W)w);
3110 if (expect_false (!ev_is_active (w))) 4218 if (expect_false (!ev_is_active (w)))
3111 return; 4219 return;
3112 4220
… …
3123 4231
3124 EV_FREQUENT_CHECK; 4232 EV_FREQUENT_CHECK;
3125} 4233}
3126#endif 4234#endif
3127 4235
4236#if EV_CLEANUP_ENABLE
4237void
4238ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4239{
4240 if (expect_false (ev_is_active (w)))
4241 return;
4242
4243 EV_FREQUENT_CHECK;
4244
4245 ev_start (EV_A_ (W)w, ++cleanupcnt);
4246 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4247 cleanups [cleanupcnt - 1] = w;
4248
4249 /* cleanup watchers should never keep a refcount on the loop */
4250 ev_unref (EV_A);
4251 EV_FREQUENT_CHECK;
4252}
4253
4254void
4255ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4256{
4257 clear_pending (EV_A_ (W)w);
4258 if (expect_false (!ev_is_active (w)))
4259 return;
4260
4261 EV_FREQUENT_CHECK;
4262 ev_ref (EV_A);
4263
4264 {
4265 int active = ev_active (w);
4266
4267 cleanups [active - 1] = cleanups [--cleanupcnt];
4268 ev_active (cleanups [active - 1]) = active;
4269 }
4270
4271 ev_stop (EV_A_ (W)w);
4272
4273 EV_FREQUENT_CHECK;
4274}
4275#endif
4276
3128#if EV_ASYNC_ENABLE 4277#if EV_ASYNC_ENABLE
3129void 4278void
3130ev_async_start (EV_P_ ev_async *w) 4279ev_async_start (EV_P_ ev_async *w) EV_THROW
3131{ 4280{
3132 if (expect_false (ev_is_active (w))) 4281 if (expect_false (ev_is_active (w)))
3133 return; 4282 return;
4283
4284 w->sent = 0;
3134 4285
3135 evpipe_init (EV_A); 4286 evpipe_init (EV_A);
3136 4287
3137 EV_FREQUENT_CHECK; 4288 EV_FREQUENT_CHECK;
3138 4289
… …
3142 4293
3143 EV_FREQUENT_CHECK; 4294 EV_FREQUENT_CHECK;
3144} 4295}
3145 4296
3146void 4297void
3147ev_async_stop (EV_P_ ev_async *w) 4298ev_async_stop (EV_P_ ev_async *w) EV_THROW
3148{ 4299{
3149 clear_pending (EV_A_ (W)w); 4300 clear_pending (EV_A_ (W)w);
3150 if (expect_false (!ev_is_active (w))) 4301 if (expect_false (!ev_is_active (w)))
3151 return; 4302 return;
3152 4303
… …
3163 4314
3164 EV_FREQUENT_CHECK; 4315 EV_FREQUENT_CHECK;
3165} 4316}
3166 4317
3167void 4318void
3168ev_async_send (EV_P_ ev_async *w) 4319ev_async_send (EV_P_ ev_async *w) EV_THROW
3169{ 4320{
3170 w->sent = 1; 4321 w->sent = 1;
3171 evpipe_write (EV_A_ &gotasync); 4322 evpipe_write (EV_A_ &async_pending);
3172} 4323}
3173#endif 4324#endif
3174 4325
3175/*****************************************************************************/ 4326/*****************************************************************************/
3176 4327
… …
3210 4361
3211 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4362 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3212} 4363}
3213 4364
3214void 4365void
3215ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4366ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3216{ 4367{
3217 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4368 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3218 4369
3219 if (expect_false (!once)) 4370 if (expect_false (!once))
3220 { 4371 {
3221 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4372 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3222 return; 4373 return;
3223 } 4374 }
3224 4375
3225 once->cb = cb; 4376 once->cb = cb;
3226 once->arg = arg; 4377 once->arg = arg;
… …
3241} 4392}
3242 4393
3243/*****************************************************************************/ 4394/*****************************************************************************/
3244 4395
3245#if EV_WALK_ENABLE 4396#if EV_WALK_ENABLE
3246void 4397void ecb_cold
3247ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4398ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3248{ 4399{
3249 int i, j; 4400 int i, j;
3250 ev_watcher_list *wl, *wn; 4401 ev_watcher_list *wl, *wn;
3251 4402
3252 if (types & (EV_IO | EV_EMBED)) 4403 if (types & (EV_IO | EV_EMBED))
… …
3295 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4446 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3296#endif 4447#endif
3297 4448
3298#if EV_IDLE_ENABLE 4449#if EV_IDLE_ENABLE
3299 if (types & EV_IDLE) 4450 if (types & EV_IDLE)
3300 for (j = NUMPRI; i--; ) 4451 for (j = NUMPRI; j--; )
3301 for (i = idlecnt [j]; i--; ) 4452 for (i = idlecnt [j]; i--; )
3302 cb (EV_A_ EV_IDLE, idles [j][i]); 4453 cb (EV_A_ EV_IDLE, idles [j][i]);
3303#endif 4454#endif
3304 4455
3305#if EV_FORK_ENABLE 4456#if EV_FORK_ENABLE
… …
3313 if (types & EV_ASYNC) 4464 if (types & EV_ASYNC)
3314 for (i = asynccnt; i--; ) 4465 for (i = asynccnt; i--; )
3315 cb (EV_A_ EV_ASYNC, asyncs [i]); 4466 cb (EV_A_ EV_ASYNC, asyncs [i]);
3316#endif 4467#endif
3317 4468
4469#if EV_PREPARE_ENABLE
3318 if (types & EV_PREPARE) 4470 if (types & EV_PREPARE)
3319 for (i = preparecnt; i--; ) 4471 for (i = preparecnt; i--; )
3320#if EV_EMBED_ENABLE 4472# if EV_EMBED_ENABLE
3321 if (ev_cb (prepares [i]) != embed_prepare_cb) 4473 if (ev_cb (prepares [i]) != embed_prepare_cb)
3322#endif 4474# endif
3323 cb (EV_A_ EV_PREPARE, prepares [i]); 4475 cb (EV_A_ EV_PREPARE, prepares [i]);
4476#endif
3324 4477
4478#if EV_CHECK_ENABLE
3325 if (types & EV_CHECK) 4479 if (types & EV_CHECK)
3326 for (i = checkcnt; i--; ) 4480 for (i = checkcnt; i--; )
3327 cb (EV_A_ EV_CHECK, checks [i]); 4481 cb (EV_A_ EV_CHECK, checks [i]);
4482#endif
3328 4483
4484#if EV_SIGNAL_ENABLE
3329 if (types & EV_SIGNAL) 4485 if (types & EV_SIGNAL)
3330 for (i = 0; i < signalmax; ++i) 4486 for (i = 0; i < EV_NSIG - 1; ++i)
3331 for (wl = signals [i].head; wl; ) 4487 for (wl = signals [i].head; wl; )
3332 { 4488 {
3333 wn = wl->next; 4489 wn = wl->next;
3334 cb (EV_A_ EV_SIGNAL, wl); 4490 cb (EV_A_ EV_SIGNAL, wl);
3335 wl = wn; 4491 wl = wn;
3336 } 4492 }
4493#endif
3337 4494
4495#if EV_CHILD_ENABLE
3338 if (types & EV_CHILD) 4496 if (types & EV_CHILD)
3339 for (i = EV_PID_HASHSIZE; i--; ) 4497 for (i = (EV_PID_HASHSIZE); i--; )
3340 for (wl = childs [i]; wl; ) 4498 for (wl = childs [i]; wl; )
3341 { 4499 {
3342 wn = wl->next; 4500 wn = wl->next;
3343 cb (EV_A_ EV_CHILD, wl); 4501 cb (EV_A_ EV_CHILD, wl);
3344 wl = wn; 4502 wl = wn;
3345 } 4503 }
4504#endif
3346/* EV_STAT 0x00001000 /* stat data changed */ 4505/* EV_STAT 0x00001000 /* stat data changed */
3347/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4506/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3348} 4507}
3349#endif 4508#endif
3350 4509
3351#if EV_MULTIPLICITY 4510#if EV_MULTIPLICITY
3352 #include "ev_wrap.h" 4511 #include "ev_wrap.h"
3353#endif 4512#endif
3354 4513
3355#ifdef __cplusplus
3356}
3357#endif
3358

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