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Comparing libev/ev.c (file contents):
Revision 1.283 by root, Wed Apr 15 09:51:19 2009 UTC vs.
Revision 1.425 by root, Sun May 6 13:09:35 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>
… …
172# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
173# include <windows.h> 206# include <windows.h>
174# ifndef EV_SELECT_IS_WINSOCKET 207# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 208# define EV_SELECT_IS_WINSOCKET 1
176# endif 209# endif
210# undef EV_AVOID_STDIO
177#endif 211#endif
212
213/* OS X, in its infinite idiocy, actually HARDCODES
214 * a limit of 1024 into their select. Where people have brains,
215 * OS X engineers apparently have a vacuum. Or maybe they were
216 * ordered to have a vacuum, or they do anything for money.
217 * This might help. Or not.
218 */
219#define _DARWIN_UNLIMITED_SELECT 1
178 220
179/* this block tries to deduce configuration from header-defined symbols and defaults */ 221/* this block tries to deduce configuration from header-defined symbols and defaults */
222
223/* try to deduce the maximum number of signals on this platform */
224#if defined EV_NSIG
225/* use what's provided */
226#elif defined NSIG
227# define EV_NSIG (NSIG)
228#elif defined _NSIG
229# define EV_NSIG (_NSIG)
230#elif defined SIGMAX
231# define EV_NSIG (SIGMAX+1)
232#elif defined SIG_MAX
233# define EV_NSIG (SIG_MAX+1)
234#elif defined _SIG_MAX
235# define EV_NSIG (_SIG_MAX+1)
236#elif defined MAXSIG
237# define EV_NSIG (MAXSIG+1)
238#elif defined MAX_SIG
239# define EV_NSIG (MAX_SIG+1)
240#elif defined SIGARRAYSIZE
241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
242#elif defined _sys_nsig
243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
244#else
245# error "unable to find value for NSIG, please report"
246/* to make it compile regardless, just remove the above line, */
247/* but consider reporting it, too! :) */
248# define EV_NSIG 65
249#endif
250
251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
253#endif
180 254
181#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 258# else
185# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
186# endif 260# endif
187#endif 261#endif
188 262
189#ifndef EV_USE_MONOTONIC 263#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 264# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 265# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 266# else
193# define EV_USE_MONOTONIC 0 267# define EV_USE_MONOTONIC 0
194# endif 268# endif
195#endif 269#endif
196 270
… …
198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 272# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 273#endif
200 274
201#ifndef EV_USE_NANOSLEEP 275#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 276# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 277# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 278# else
205# define EV_USE_NANOSLEEP 0 279# define EV_USE_NANOSLEEP 0
206# endif 280# endif
207#endif 281#endif
208 282
209#ifndef EV_USE_SELECT 283#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 284# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 285#endif
212 286
213#ifndef EV_USE_POLL 287#ifndef EV_USE_POLL
214# ifdef _WIN32 288# ifdef _WIN32
215# define EV_USE_POLL 0 289# define EV_USE_POLL 0
216# else 290# else
217# define EV_USE_POLL 1 291# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 292# endif
219#endif 293#endif
220 294
221#ifndef EV_USE_EPOLL 295#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 297# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 298# else
225# define EV_USE_EPOLL 0 299# define EV_USE_EPOLL 0
226# endif 300# endif
227#endif 301#endif
228 302
… …
234# define EV_USE_PORT 0 308# define EV_USE_PORT 0
235#endif 309#endif
236 310
237#ifndef EV_USE_INOTIFY 311#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 313# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 314# else
241# define EV_USE_INOTIFY 0 315# define EV_USE_INOTIFY 0
242# endif 316# endif
243#endif 317#endif
244 318
245#ifndef EV_PID_HASHSIZE 319#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 320# 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 321#endif
252 322
253#ifndef EV_INOTIFY_HASHSIZE 323#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 324# 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 325#endif
260 326
261#ifndef EV_USE_EVENTFD 327#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 328# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 329# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 330# else
265# define EV_USE_EVENTFD 0 331# define EV_USE_EVENTFD 0
332# endif
333#endif
334
335#ifndef EV_USE_SIGNALFD
336# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
337# define EV_USE_SIGNALFD EV_FEATURE_OS
338# else
339# define EV_USE_SIGNALFD 0
266# endif 340# endif
267#endif 341#endif
268 342
269#if 0 /* debugging */ 343#if 0 /* debugging */
270# define EV_VERIFY 3 344# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 345# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 346# define EV_HEAP_CACHE_AT 1
273#endif 347#endif
274 348
275#ifndef EV_VERIFY 349#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 350# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 351#endif
278 352
279#ifndef EV_USE_4HEAP 353#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 354# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 355#endif
282 356
283#ifndef EV_HEAP_CACHE_AT 357#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL 358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
359#endif
360
361/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
362/* which makes programs even slower. might work on other unices, too. */
363#if EV_USE_CLOCK_SYSCALL
364# include <sys/syscall.h>
365# ifdef SYS_clock_gettime
366# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
367# undef EV_USE_MONOTONIC
368# define EV_USE_MONOTONIC 1
369# else
370# undef EV_USE_CLOCK_SYSCALL
371# define EV_USE_CLOCK_SYSCALL 0
372# endif
285#endif 373#endif
286 374
287/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 375/* this block fixes any misconfiguration where we know we run into trouble otherwise */
376
377#ifdef _AIX
378/* AIX has a completely broken poll.h header */
379# undef EV_USE_POLL
380# define EV_USE_POLL 0
381#endif
288 382
289#ifndef CLOCK_MONOTONIC 383#ifndef CLOCK_MONOTONIC
290# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
291# define EV_USE_MONOTONIC 0 385# define EV_USE_MONOTONIC 0
292#endif 386#endif
… …
300# undef EV_USE_INOTIFY 394# undef EV_USE_INOTIFY
301# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
302#endif 396#endif
303 397
304#if !EV_USE_NANOSLEEP 398#if !EV_USE_NANOSLEEP
305# ifndef _WIN32 399/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined _WIN32 && !defined __hpux
306# include <sys/select.h> 401# include <sys/select.h>
307# endif 402# endif
308#endif 403#endif
309 404
310#if EV_USE_INOTIFY 405#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h> 406# include <sys/statfs.h>
313# include <sys/inotify.h> 407# include <sys/inotify.h>
314/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
315# ifndef IN_DONT_FOLLOW 409# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY 410# undef EV_USE_INOTIFY
… …
320 414
321#if EV_SELECT_IS_WINSOCKET 415#if EV_SELECT_IS_WINSOCKET
322# include <winsock.h> 416# include <winsock.h>
323#endif 417#endif
324 418
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 419#if EV_USE_EVENTFD
335/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 420/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336# include <stdint.h> 421# include <stdint.h>
337# ifdef __cplusplus 422# ifndef EFD_NONBLOCK
338extern "C" { 423# define EFD_NONBLOCK O_NONBLOCK
339# endif 424# endif
340int eventfd (unsigned int initval, int flags); 425# ifndef EFD_CLOEXEC
341# ifdef __cplusplus 426# ifdef O_CLOEXEC
342} 427# define EFD_CLOEXEC O_CLOEXEC
428# else
429# define EFD_CLOEXEC 02000000
430# endif
343# endif 431# endif
432EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
433#endif
434
435#if EV_USE_SIGNALFD
436/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
437# include <stdint.h>
438# ifndef SFD_NONBLOCK
439# define SFD_NONBLOCK O_NONBLOCK
440# endif
441# ifndef SFD_CLOEXEC
442# ifdef O_CLOEXEC
443# define SFD_CLOEXEC O_CLOEXEC
444# else
445# define SFD_CLOEXEC 02000000
446# endif
447# endif
448EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
449
450struct signalfd_siginfo
451{
452 uint32_t ssi_signo;
453 char pad[128 - sizeof (uint32_t)];
454};
344#endif 455#endif
345 456
346/**/ 457/**/
347 458
348#if EV_VERIFY >= 3 459#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 460# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 461#else
351# define EV_FREQUENT_CHECK do { } while (0) 462# define EV_FREQUENT_CHECK do { } while (0)
352#endif 463#endif
353 464
354/* 465/*
355 * This is used to avoid floating point rounding problems. 466 * 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. 467 * This value is good at least till the year 4000.
360 * Better solutions welcome.
361 */ 468 */
362#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 469#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
470/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
363 471
364#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 472#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) */ 473#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 */
367 474
475#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
476#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
477
478/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479/* ECB.H BEGIN */
480/*
481 * libecb - http://software.schmorp.de/pkg/libecb
482 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved.
486 *
487 * Redistribution and use in source and binary forms, with or without modifica-
488 * tion, are permitted provided that the following conditions are met:
489 *
490 * 1. Redistributions of source code must retain the above copyright notice,
491 * this list of conditions and the following disclaimer.
492 *
493 * 2. Redistributions in binary form must reproduce the above copyright
494 * notice, this list of conditions and the following disclaimer in the
495 * documentation and/or other materials provided with the distribution.
496 *
497 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
498 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
499 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
500 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
501 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
502 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
505 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
506 * OF THE POSSIBILITY OF SUCH DAMAGE.
507 */
508
509#ifndef ECB_H
510#define ECB_H
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
368#if __GNUC__ >= 4 519 #if __GNUC__
369# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
370# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
371#else 526#else
372# define expect(expr,value) (expr) 527 #include <inttypes.h>
373# define noinline
374# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
375# define inline
376# endif 528#endif
529
530/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so.
534 * we try to detect these and simply assume they are not gcc - if they have
535 * an issue with that they should have done it right in the first place.
536 */
537#ifndef ECB_GCC_VERSION
538 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
539 #define ECB_GCC_VERSION(major,minor) 0
540 #else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
377#endif 542 #endif
543#endif
378 544
545/*****************************************************************************/
546
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549
550#if ECB_NO_THREADS
551# define ECB_NO_SMP 1
552#endif
553
554#if ECB_NO_THREADS || ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0)
556#endif
557
558#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
560 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
567 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
570 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #elif defined __mips__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
584 #elif defined __alpha__
585 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
586 #endif
587 #endif
588#endif
589
590#ifndef ECB_MEMORY_FENCE
591 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
592 #define ECB_MEMORY_FENCE __sync_synchronize ()
593 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
594 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
595 #elif _MSC_VER >= 1400 /* VC++ 2005 */
596 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
597 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
598 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
599 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
600 #elif defined _WIN32
601 #include <WinNT.h>
602 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
603 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
604 #include <mbarrier.h>
605 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
606 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
607 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
608 #elif __xlC__
609 #define ECB_MEMORY_FENCE __sync ()
610 #endif
611#endif
612
613#ifndef ECB_MEMORY_FENCE
614 #if !ECB_AVOID_PTHREADS
615 /*
616 * if you get undefined symbol references to pthread_mutex_lock,
617 * or failure to find pthread.h, then you should implement
618 * the ECB_MEMORY_FENCE operations for your cpu/compiler
619 * OR provide pthread.h and link against the posix thread library
620 * of your system.
621 */
622 #include <pthread.h>
623 #define ECB_NEEDS_PTHREADS 1
624 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
625
626 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
627 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
628 #endif
629#endif
630
631#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
632 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
633#endif
634
635#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
636 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
637#endif
638
639/*****************************************************************************/
640
641#define ECB_C99 (__STDC_VERSION__ >= 199901L)
642
643#if __cplusplus
644 #define ecb_inline static inline
645#elif ECB_GCC_VERSION(2,5)
646 #define ecb_inline static __inline__
647#elif ECB_C99
648 #define ecb_inline static inline
649#else
650 #define ecb_inline static
651#endif
652
653#if ECB_GCC_VERSION(3,3)
654 #define ecb_restrict __restrict__
655#elif ECB_C99
656 #define ecb_restrict restrict
657#else
658 #define ecb_restrict
659#endif
660
661typedef int ecb_bool;
662
663#define ECB_CONCAT_(a, b) a ## b
664#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
665#define ECB_STRINGIFY_(a) # a
666#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
667
668#define ecb_function_ ecb_inline
669
670#if ECB_GCC_VERSION(3,1)
671 #define ecb_attribute(attrlist) __attribute__(attrlist)
672 #define ecb_is_constant(expr) __builtin_constant_p (expr)
673 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
674 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
675#else
676 #define ecb_attribute(attrlist)
677 #define ecb_is_constant(expr) 0
678 #define ecb_expect(expr,value) (expr)
679 #define ecb_prefetch(addr,rw,locality)
680#endif
681
682/* no emulation for ecb_decltype */
683#if ECB_GCC_VERSION(4,5)
684 #define ecb_decltype(x) __decltype(x)
685#elif ECB_GCC_VERSION(3,0)
686 #define ecb_decltype(x) __typeof(x)
687#endif
688
689#define ecb_noinline ecb_attribute ((__noinline__))
690#define ecb_noreturn ecb_attribute ((__noreturn__))
691#define ecb_unused ecb_attribute ((__unused__))
692#define ecb_const ecb_attribute ((__const__))
693#define ecb_pure ecb_attribute ((__pure__))
694
695#if ECB_GCC_VERSION(4,3)
696 #define ecb_artificial ecb_attribute ((__artificial__))
697 #define ecb_hot ecb_attribute ((__hot__))
698 #define ecb_cold ecb_attribute ((__cold__))
699#else
700 #define ecb_artificial
701 #define ecb_hot
702 #define ecb_cold
703#endif
704
705/* put around conditional expressions if you are very sure that the */
706/* expression is mostly true or mostly false. note that these return */
707/* booleans, not the expression. */
379#define expect_false(expr) expect ((expr) != 0, 0) 708#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 709#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
710/* for compatibility to the rest of the world */
711#define ecb_likely(expr) ecb_expect_true (expr)
712#define ecb_unlikely(expr) ecb_expect_false (expr)
713
714/* count trailing zero bits and count # of one bits */
715#if ECB_GCC_VERSION(3,4)
716 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
717 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
718 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
719 #define ecb_ctz32(x) __builtin_ctz (x)
720 #define ecb_ctz64(x) __builtin_ctzll (x)
721 #define ecb_popcount32(x) __builtin_popcount (x)
722 /* no popcountll */
723#else
724 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
725 ecb_function_ int
726 ecb_ctz32 (uint32_t x)
727 {
728 int r = 0;
729
730 x &= ~x + 1; /* this isolates the lowest bit */
731
732#if ECB_branchless_on_i386
733 r += !!(x & 0xaaaaaaaa) << 0;
734 r += !!(x & 0xcccccccc) << 1;
735 r += !!(x & 0xf0f0f0f0) << 2;
736 r += !!(x & 0xff00ff00) << 3;
737 r += !!(x & 0xffff0000) << 4;
738#else
739 if (x & 0xaaaaaaaa) r += 1;
740 if (x & 0xcccccccc) r += 2;
741 if (x & 0xf0f0f0f0) r += 4;
742 if (x & 0xff00ff00) r += 8;
743 if (x & 0xffff0000) r += 16;
744#endif
745
746 return r;
747 }
748
749 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
750 ecb_function_ int
751 ecb_ctz64 (uint64_t x)
752 {
753 int shift = x & 0xffffffffU ? 0 : 32;
754 return ecb_ctz32 (x >> shift) + shift;
755 }
756
757 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
758 ecb_function_ int
759 ecb_popcount32 (uint32_t x)
760 {
761 x -= (x >> 1) & 0x55555555;
762 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
763 x = ((x >> 4) + x) & 0x0f0f0f0f;
764 x *= 0x01010101;
765
766 return x >> 24;
767 }
768
769 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
770 ecb_function_ int ecb_ld32 (uint32_t x)
771 {
772 int r = 0;
773
774 if (x >> 16) { x >>= 16; r += 16; }
775 if (x >> 8) { x >>= 8; r += 8; }
776 if (x >> 4) { x >>= 4; r += 4; }
777 if (x >> 2) { x >>= 2; r += 2; }
778 if (x >> 1) { r += 1; }
779
780 return r;
781 }
782
783 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
784 ecb_function_ int ecb_ld64 (uint64_t x)
785 {
786 int r = 0;
787
788 if (x >> 32) { x >>= 32; r += 32; }
789
790 return r + ecb_ld32 (x);
791 }
792#endif
793
794ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
795ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
796{
797 return ( (x * 0x0802U & 0x22110U)
798 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
799}
800
801ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
802ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
803{
804 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
805 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
806 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
807 x = ( x >> 8 ) | ( x << 8);
808
809 return x;
810}
811
812ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
813ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
814{
815 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
816 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
817 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
818 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
819 x = ( x >> 16 ) | ( x << 16);
820
821 return x;
822}
823
824/* popcount64 is only available on 64 bit cpus as gcc builtin */
825/* so for this version we are lazy */
826ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
827ecb_function_ int
828ecb_popcount64 (uint64_t x)
829{
830 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
831}
832
833ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
834ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
835ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
836ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
837ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
838ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
839ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
840ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
841
842ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
843ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
844ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
845ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
846ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
847ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
848ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
849ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
850
851#if ECB_GCC_VERSION(4,3)
852 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
853 #define ecb_bswap32(x) __builtin_bswap32 (x)
854 #define ecb_bswap64(x) __builtin_bswap64 (x)
855#else
856 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
857 ecb_function_ uint16_t
858 ecb_bswap16 (uint16_t x)
859 {
860 return ecb_rotl16 (x, 8);
861 }
862
863 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
864 ecb_function_ uint32_t
865 ecb_bswap32 (uint32_t x)
866 {
867 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
868 }
869
870 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
871 ecb_function_ uint64_t
872 ecb_bswap64 (uint64_t x)
873 {
874 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
875 }
876#endif
877
878#if ECB_GCC_VERSION(4,5)
879 #define ecb_unreachable() __builtin_unreachable ()
880#else
881 /* this seems to work fine, but gcc always emits a warning for it :/ */
882 ecb_inline void ecb_unreachable (void) ecb_noreturn;
883 ecb_inline void ecb_unreachable (void) { }
884#endif
885
886/* try to tell the compiler that some condition is definitely true */
887#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
888
889ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
890ecb_inline unsigned char
891ecb_byteorder_helper (void)
892{
893 const uint32_t u = 0x11223344;
894 return *(unsigned char *)&u;
895}
896
897ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
898ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
899ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
900ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
901
902#if ECB_GCC_VERSION(3,0) || ECB_C99
903 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
904#else
905 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
906#endif
907
908#if __cplusplus
909 template<typename T>
910 static inline T ecb_div_rd (T val, T div)
911 {
912 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
913 }
914 template<typename T>
915 static inline T ecb_div_ru (T val, T div)
916 {
917 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
918 }
919#else
920 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
921 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
922#endif
923
924#if ecb_cplusplus_does_not_suck
925 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
926 template<typename T, int N>
927 static inline int ecb_array_length (const T (&arr)[N])
928 {
929 return N;
930 }
931#else
932 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
933#endif
934
935#endif
936
937/* ECB.H END */
938
939#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
940/* if your architecture doesn't need memory fences, e.g. because it is
941 * single-cpu/core, or if you use libev in a project that doesn't use libev
942 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
943 * libev, in which cases the memory fences become nops.
944 * alternatively, you can remove this #error and link against libpthread,
945 * which will then provide the memory fences.
946 */
947# error "memory fences not defined for your architecture, please report"
948#endif
949
950#ifndef ECB_MEMORY_FENCE
951# define ECB_MEMORY_FENCE do { } while (0)
952# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
953# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
954#endif
955
956#define expect_false(cond) ecb_expect_false (cond)
957#define expect_true(cond) ecb_expect_true (cond)
958#define noinline ecb_noinline
959
381#define inline_size static inline 960#define inline_size ecb_inline
382 961
383#if EV_MINIMAL 962#if EV_FEATURE_CODE
963# define inline_speed ecb_inline
964#else
384# define inline_speed static noinline 965# define inline_speed static noinline
966#endif
967
968#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
969
970#if EV_MINPRI == EV_MAXPRI
971# define ABSPRI(w) (((W)w), 0)
385#else 972#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) 973# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
974#endif
391 975
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 976#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 977#define EMPTY2(a,b) /* used to suppress some warnings */
394 978
395typedef ev_watcher *W; 979typedef ev_watcher *W;
… …
399#define ev_active(w) ((W)(w))->active 983#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 984#define ev_at(w) ((WT)(w))->at
401 985
402#if EV_USE_REALTIME 986#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 987/* 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 */ 988/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 989static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 990#endif
407 991
408#if EV_USE_MONOTONIC 992#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 993static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 994#endif
411 995
996#ifndef EV_FD_TO_WIN32_HANDLE
997# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
998#endif
999#ifndef EV_WIN32_HANDLE_TO_FD
1000# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1001#endif
1002#ifndef EV_WIN32_CLOSE_FD
1003# define EV_WIN32_CLOSE_FD(fd) close (fd)
1004#endif
1005
412#ifdef _WIN32 1006#ifdef _WIN32
413# include "ev_win32.c" 1007# include "ev_win32.c"
414#endif 1008#endif
415 1009
416/*****************************************************************************/ 1010/*****************************************************************************/
417 1011
1012/* define a suitable floor function (only used by periodics atm) */
1013
1014#if EV_USE_FLOOR
1015# include <math.h>
1016# define ev_floor(v) floor (v)
1017#else
1018
1019#include <float.h>
1020
1021/* a floor() replacement function, should be independent of ev_tstamp type */
1022static ev_tstamp noinline
1023ev_floor (ev_tstamp v)
1024{
1025 /* the choice of shift factor is not terribly important */
1026#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1027 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1028#else
1029 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1030#endif
1031
1032 /* argument too large for an unsigned long? */
1033 if (expect_false (v >= shift))
1034 {
1035 ev_tstamp f;
1036
1037 if (v == v - 1.)
1038 return v; /* very large number */
1039
1040 f = shift * ev_floor (v * (1. / shift));
1041 return f + ev_floor (v - f);
1042 }
1043
1044 /* special treatment for negative args? */
1045 if (expect_false (v < 0.))
1046 {
1047 ev_tstamp f = -ev_floor (-v);
1048
1049 return f - (f == v ? 0 : 1);
1050 }
1051
1052 /* fits into an unsigned long */
1053 return (unsigned long)v;
1054}
1055
1056#endif
1057
1058/*****************************************************************************/
1059
1060#ifdef __linux
1061# include <sys/utsname.h>
1062#endif
1063
1064static unsigned int noinline ecb_cold
1065ev_linux_version (void)
1066{
1067#ifdef __linux
1068 unsigned int v = 0;
1069 struct utsname buf;
1070 int i;
1071 char *p = buf.release;
1072
1073 if (uname (&buf))
1074 return 0;
1075
1076 for (i = 3+1; --i; )
1077 {
1078 unsigned int c = 0;
1079
1080 for (;;)
1081 {
1082 if (*p >= '0' && *p <= '9')
1083 c = c * 10 + *p++ - '0';
1084 else
1085 {
1086 p += *p == '.';
1087 break;
1088 }
1089 }
1090
1091 v = (v << 8) | c;
1092 }
1093
1094 return v;
1095#else
1096 return 0;
1097#endif
1098}
1099
1100/*****************************************************************************/
1101
1102#if EV_AVOID_STDIO
1103static void noinline ecb_cold
1104ev_printerr (const char *msg)
1105{
1106 write (STDERR_FILENO, msg, strlen (msg));
1107}
1108#endif
1109
418static void (*syserr_cb)(const char *msg); 1110static void (*syserr_cb)(const char *msg) EV_THROW;
419 1111
420void 1112void ecb_cold
421ev_set_syserr_cb (void (*cb)(const char *msg)) 1113ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
422{ 1114{
423 syserr_cb = cb; 1115 syserr_cb = cb;
424} 1116}
425 1117
426static void noinline 1118static void noinline ecb_cold
427ev_syserr (const char *msg) 1119ev_syserr (const char *msg)
428{ 1120{
429 if (!msg) 1121 if (!msg)
430 msg = "(libev) system error"; 1122 msg = "(libev) system error";
431 1123
432 if (syserr_cb) 1124 if (syserr_cb)
433 syserr_cb (msg); 1125 syserr_cb (msg);
434 else 1126 else
435 { 1127 {
1128#if EV_AVOID_STDIO
1129 ev_printerr (msg);
1130 ev_printerr (": ");
1131 ev_printerr (strerror (errno));
1132 ev_printerr ("\n");
1133#else
436 perror (msg); 1134 perror (msg);
1135#endif
437 abort (); 1136 abort ();
438 } 1137 }
439} 1138}
440 1139
441static void * 1140static void *
442ev_realloc_emul (void *ptr, long size) 1141ev_realloc_emul (void *ptr, long size)
443{ 1142{
1143#if __GLIBC__
1144 return realloc (ptr, size);
1145#else
444 /* some systems, notably openbsd and darwin, fail to properly 1146 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 1147 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 1148 * the single unix specification, so work around them here.
447 */ 1149 */
448 1150
449 if (size) 1151 if (size)
450 return realloc (ptr, size); 1152 return realloc (ptr, size);
451 1153
452 free (ptr); 1154 free (ptr);
453 return 0; 1155 return 0;
1156#endif
454} 1157}
455 1158
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1159static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
457 1160
458void 1161void ecb_cold
459ev_set_allocator (void *(*cb)(void *ptr, long size)) 1162ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
460{ 1163{
461 alloc = cb; 1164 alloc = cb;
462} 1165}
463 1166
464inline_speed void * 1167inline_speed void *
… …
466{ 1169{
467 ptr = alloc (ptr, size); 1170 ptr = alloc (ptr, size);
468 1171
469 if (!ptr && size) 1172 if (!ptr && size)
470 { 1173 {
1174#if EV_AVOID_STDIO
1175 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1176#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1177 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1178#endif
472 abort (); 1179 abort ();
473 } 1180 }
474 1181
475 return ptr; 1182 return ptr;
476} 1183}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 1185#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 1186#define ev_free(ptr) ev_realloc ((ptr), 0)
480 1187
481/*****************************************************************************/ 1188/*****************************************************************************/
482 1189
1190/* set in reify when reification needed */
1191#define EV_ANFD_REIFY 1
1192
1193/* file descriptor info structure */
483typedef struct 1194typedef struct
484{ 1195{
485 WL head; 1196 WL head;
486 unsigned char events; 1197 unsigned char events; /* the events watched for */
487 unsigned char reify; 1198 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
488 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1199 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489 unsigned char unused; 1200 unsigned char unused;
490#if EV_USE_EPOLL 1201#if EV_USE_EPOLL
491 unsigned int egen; /* generation counter to counter epoll bugs */ 1202 unsigned int egen; /* generation counter to counter epoll bugs */
492#endif 1203#endif
493#if EV_SELECT_IS_WINSOCKET 1204#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
494 SOCKET handle; 1205 SOCKET handle;
495#endif 1206#endif
1207#if EV_USE_IOCP
1208 OVERLAPPED or, ow;
1209#endif
496} ANFD; 1210} ANFD;
497 1211
1212/* stores the pending event set for a given watcher */
498typedef struct 1213typedef struct
499{ 1214{
500 W w; 1215 W w;
501 int events; 1216 int events; /* the pending event set for the given watcher */
502} ANPENDING; 1217} ANPENDING;
503 1218
504#if EV_USE_INOTIFY 1219#if EV_USE_INOTIFY
505/* hash table entry per inotify-id */ 1220/* hash table entry per inotify-id */
506typedef struct 1221typedef struct
… …
509} ANFS; 1224} ANFS;
510#endif 1225#endif
511 1226
512/* Heap Entry */ 1227/* Heap Entry */
513#if EV_HEAP_CACHE_AT 1228#if EV_HEAP_CACHE_AT
1229 /* a heap element */
514 typedef struct { 1230 typedef struct {
515 ev_tstamp at; 1231 ev_tstamp at;
516 WT w; 1232 WT w;
517 } ANHE; 1233 } ANHE;
518 1234
519 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1235 #define ANHE_w(he) (he).w /* access watcher, read-write */
520 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1236 #define ANHE_at(he) (he).at /* access cached at, read-only */
521 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 1237 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522#else 1238#else
1239 /* a heap element */
523 typedef WT ANHE; 1240 typedef WT ANHE;
524 1241
525 #define ANHE_w(he) (he) 1242 #define ANHE_w(he) (he)
526 #define ANHE_at(he) (he)->at 1243 #define ANHE_at(he) (he)->at
527 #define ANHE_at_cache(he) 1244 #define ANHE_at_cache(he)
… …
538 #undef VAR 1255 #undef VAR
539 }; 1256 };
540 #include "ev_wrap.h" 1257 #include "ev_wrap.h"
541 1258
542 static struct ev_loop default_loop_struct; 1259 static struct ev_loop default_loop_struct;
543 struct ev_loop *ev_default_loop_ptr; 1260 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
544 1261
545#else 1262#else
546 1263
547 ev_tstamp ev_rt_now; 1264 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
548 #define VAR(name,decl) static decl; 1265 #define VAR(name,decl) static decl;
549 #include "ev_vars.h" 1266 #include "ev_vars.h"
550 #undef VAR 1267 #undef VAR
551 1268
552 static int ev_default_loop_ptr; 1269 static int ev_default_loop_ptr;
553 1270
554#endif 1271#endif
555 1272
1273#if EV_FEATURE_API
1274# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1275# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1276# define EV_INVOKE_PENDING invoke_cb (EV_A)
1277#else
1278# define EV_RELEASE_CB (void)0
1279# define EV_ACQUIRE_CB (void)0
1280# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1281#endif
1282
1283#define EVBREAK_RECURSE 0x80
1284
556/*****************************************************************************/ 1285/*****************************************************************************/
557 1286
1287#ifndef EV_HAVE_EV_TIME
558ev_tstamp 1288ev_tstamp
559ev_time (void) 1289ev_time (void) EV_THROW
560{ 1290{
561#if EV_USE_REALTIME 1291#if EV_USE_REALTIME
562 if (expect_true (have_realtime)) 1292 if (expect_true (have_realtime))
563 { 1293 {
564 struct timespec ts; 1294 struct timespec ts;
… …
569 1299
570 struct timeval tv; 1300 struct timeval tv;
571 gettimeofday (&tv, 0); 1301 gettimeofday (&tv, 0);
572 return tv.tv_sec + tv.tv_usec * 1e-6; 1302 return tv.tv_sec + tv.tv_usec * 1e-6;
573} 1303}
1304#endif
574 1305
575ev_tstamp inline_size 1306inline_size ev_tstamp
576get_clock (void) 1307get_clock (void)
577{ 1308{
578#if EV_USE_MONOTONIC 1309#if EV_USE_MONOTONIC
579 if (expect_true (have_monotonic)) 1310 if (expect_true (have_monotonic))
580 { 1311 {
… …
587 return ev_time (); 1318 return ev_time ();
588} 1319}
589 1320
590#if EV_MULTIPLICITY 1321#if EV_MULTIPLICITY
591ev_tstamp 1322ev_tstamp
592ev_now (EV_P) 1323ev_now (EV_P) EV_THROW
593{ 1324{
594 return ev_rt_now; 1325 return ev_rt_now;
595} 1326}
596#endif 1327#endif
597 1328
598void 1329void
599ev_sleep (ev_tstamp delay) 1330ev_sleep (ev_tstamp delay) EV_THROW
600{ 1331{
601 if (delay > 0.) 1332 if (delay > 0.)
602 { 1333 {
603#if EV_USE_NANOSLEEP 1334#if EV_USE_NANOSLEEP
604 struct timespec ts; 1335 struct timespec ts;
605 1336
606 ts.tv_sec = (time_t)delay; 1337 EV_TS_SET (ts, delay);
607 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
608
609 nanosleep (&ts, 0); 1338 nanosleep (&ts, 0);
610#elif defined(_WIN32) 1339#elif defined _WIN32
611 Sleep ((unsigned long)(delay * 1e3)); 1340 Sleep ((unsigned long)(delay * 1e3));
612#else 1341#else
613 struct timeval tv; 1342 struct timeval tv;
614 1343
615 tv.tv_sec = (time_t)delay;
616 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
617
618 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1344 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1345 /* something not guaranteed by newer posix versions, but guaranteed */
620 /* by older ones */ 1346 /* by older ones */
1347 EV_TV_SET (tv, delay);
621 select (0, 0, 0, 0, &tv); 1348 select (0, 0, 0, 0, &tv);
622#endif 1349#endif
623 } 1350 }
624} 1351}
625 1352
626/*****************************************************************************/ 1353/*****************************************************************************/
627 1354
628#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1355#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629 1356
630int inline_size 1357/* find a suitable new size for the given array, */
1358/* hopefully by rounding to a nice-to-malloc size */
1359inline_size int
631array_nextsize (int elem, int cur, int cnt) 1360array_nextsize (int elem, int cur, int cnt)
632{ 1361{
633 int ncur = cur + 1; 1362 int ncur = cur + 1;
634 1363
635 do 1364 do
636 ncur <<= 1; 1365 ncur <<= 1;
637 while (cnt > ncur); 1366 while (cnt > ncur);
638 1367
639 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1368 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
640 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1369 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
641 { 1370 {
642 ncur *= elem; 1371 ncur *= elem;
643 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1372 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
644 ncur = ncur - sizeof (void *) * 4; 1373 ncur = ncur - sizeof (void *) * 4;
… …
646 } 1375 }
647 1376
648 return ncur; 1377 return ncur;
649} 1378}
650 1379
651static noinline void * 1380static void * noinline ecb_cold
652array_realloc (int elem, void *base, int *cur, int cnt) 1381array_realloc (int elem, void *base, int *cur, int cnt)
653{ 1382{
654 *cur = array_nextsize (elem, *cur, cnt); 1383 *cur = array_nextsize (elem, *cur, cnt);
655 return ev_realloc (base, elem * *cur); 1384 return ev_realloc (base, elem * *cur);
656} 1385}
… …
659 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1388 memset ((void *)(base), 0, sizeof (*(base)) * (count))
660 1389
661#define array_needsize(type,base,cur,cnt,init) \ 1390#define array_needsize(type,base,cur,cnt,init) \
662 if (expect_false ((cnt) > (cur))) \ 1391 if (expect_false ((cnt) > (cur))) \
663 { \ 1392 { \
664 int ocur_ = (cur); \ 1393 int ecb_unused ocur_ = (cur); \
665 (base) = (type *)array_realloc \ 1394 (base) = (type *)array_realloc \
666 (sizeof (type), (base), &(cur), (cnt)); \ 1395 (sizeof (type), (base), &(cur), (cnt)); \
667 init ((base) + (ocur_), (cur) - ocur_); \ 1396 init ((base) + (ocur_), (cur) - ocur_); \
668 } 1397 }
669 1398
… …
680#define array_free(stem, idx) \ 1409#define array_free(stem, idx) \
681 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1410 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682 1411
683/*****************************************************************************/ 1412/*****************************************************************************/
684 1413
1414/* dummy callback for pending events */
1415static void noinline
1416pendingcb (EV_P_ ev_prepare *w, int revents)
1417{
1418}
1419
685void noinline 1420void noinline
686ev_feed_event (EV_P_ void *w, int revents) 1421ev_feed_event (EV_P_ void *w, int revents) EV_THROW
687{ 1422{
688 W w_ = (W)w; 1423 W w_ = (W)w;
689 int pri = ABSPRI (w_); 1424 int pri = ABSPRI (w_);
690 1425
691 if (expect_false (w_->pending)) 1426 if (expect_false (w_->pending))
… …
695 w_->pending = ++pendingcnt [pri]; 1430 w_->pending = ++pendingcnt [pri];
696 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1431 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
697 pendings [pri][w_->pending - 1].w = w_; 1432 pendings [pri][w_->pending - 1].w = w_;
698 pendings [pri][w_->pending - 1].events = revents; 1433 pendings [pri][w_->pending - 1].events = revents;
699 } 1434 }
700}
701 1435
702void inline_speed 1436 pendingpri = NUMPRI - 1;
1437}
1438
1439inline_speed void
1440feed_reverse (EV_P_ W w)
1441{
1442 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1443 rfeeds [rfeedcnt++] = w;
1444}
1445
1446inline_size void
1447feed_reverse_done (EV_P_ int revents)
1448{
1449 do
1450 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1451 while (rfeedcnt);
1452}
1453
1454inline_speed void
703queue_events (EV_P_ W *events, int eventcnt, int type) 1455queue_events (EV_P_ W *events, int eventcnt, int type)
704{ 1456{
705 int i; 1457 int i;
706 1458
707 for (i = 0; i < eventcnt; ++i) 1459 for (i = 0; i < eventcnt; ++i)
708 ev_feed_event (EV_A_ events [i], type); 1460 ev_feed_event (EV_A_ events [i], type);
709} 1461}
710 1462
711/*****************************************************************************/ 1463/*****************************************************************************/
712 1464
713void inline_speed 1465inline_speed void
714fd_event (EV_P_ int fd, int revents) 1466fd_event_nocheck (EV_P_ int fd, int revents)
715{ 1467{
716 ANFD *anfd = anfds + fd; 1468 ANFD *anfd = anfds + fd;
717 ev_io *w; 1469 ev_io *w;
718 1470
719 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1471 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
723 if (ev) 1475 if (ev)
724 ev_feed_event (EV_A_ (W)w, ev); 1476 ev_feed_event (EV_A_ (W)w, ev);
725 } 1477 }
726} 1478}
727 1479
1480/* do not submit kernel events for fds that have reify set */
1481/* because that means they changed while we were polling for new events */
1482inline_speed void
1483fd_event (EV_P_ int fd, int revents)
1484{
1485 ANFD *anfd = anfds + fd;
1486
1487 if (expect_true (!anfd->reify))
1488 fd_event_nocheck (EV_A_ fd, revents);
1489}
1490
728void 1491void
729ev_feed_fd_event (EV_P_ int fd, int revents) 1492ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
730{ 1493{
731 if (fd >= 0 && fd < anfdmax) 1494 if (fd >= 0 && fd < anfdmax)
732 fd_event (EV_A_ fd, revents); 1495 fd_event_nocheck (EV_A_ fd, revents);
733} 1496}
734 1497
735void inline_size 1498/* make sure the external fd watch events are in-sync */
1499/* with the kernel/libev internal state */
1500inline_size void
736fd_reify (EV_P) 1501fd_reify (EV_P)
737{ 1502{
738 int i; 1503 int i;
1504
1505#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1506 for (i = 0; i < fdchangecnt; ++i)
1507 {
1508 int fd = fdchanges [i];
1509 ANFD *anfd = anfds + fd;
1510
1511 if (anfd->reify & EV__IOFDSET && anfd->head)
1512 {
1513 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1514
1515 if (handle != anfd->handle)
1516 {
1517 unsigned long arg;
1518
1519 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1520
1521 /* handle changed, but fd didn't - we need to do it in two steps */
1522 backend_modify (EV_A_ fd, anfd->events, 0);
1523 anfd->events = 0;
1524 anfd->handle = handle;
1525 }
1526 }
1527 }
1528#endif
739 1529
740 for (i = 0; i < fdchangecnt; ++i) 1530 for (i = 0; i < fdchangecnt; ++i)
741 { 1531 {
742 int fd = fdchanges [i]; 1532 int fd = fdchanges [i];
743 ANFD *anfd = anfds + fd; 1533 ANFD *anfd = anfds + fd;
744 ev_io *w; 1534 ev_io *w;
745 1535
746 unsigned char events = 0; 1536 unsigned char o_events = anfd->events;
1537 unsigned char o_reify = anfd->reify;
747 1538
748 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1539 anfd->reify = 0;
749 events |= (unsigned char)w->events;
750 1540
751#if EV_SELECT_IS_WINSOCKET 1541 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
752 if (events)
753 { 1542 {
754 unsigned long arg; 1543 anfd->events = 0;
755 #ifdef EV_FD_TO_WIN32_HANDLE 1544
756 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1545 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
757 #else 1546 anfd->events |= (unsigned char)w->events;
758 anfd->handle = _get_osfhandle (fd); 1547
759 #endif 1548 if (o_events != anfd->events)
760 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1549 o_reify = EV__IOFDSET; /* actually |= */
761 } 1550 }
762#endif
763 1551
764 { 1552 if (o_reify & EV__IOFDSET)
765 unsigned char o_events = anfd->events;
766 unsigned char o_reify = anfd->reify;
767
768 anfd->reify = 0;
769 anfd->events = events;
770
771 if (o_events != events || o_reify & EV__IOFDSET)
772 backend_modify (EV_A_ fd, o_events, events); 1553 backend_modify (EV_A_ fd, o_events, anfd->events);
773 }
774 } 1554 }
775 1555
776 fdchangecnt = 0; 1556 fdchangecnt = 0;
777} 1557}
778 1558
779void inline_size 1559/* something about the given fd changed */
1560inline_size void
780fd_change (EV_P_ int fd, int flags) 1561fd_change (EV_P_ int fd, int flags)
781{ 1562{
782 unsigned char reify = anfds [fd].reify; 1563 unsigned char reify = anfds [fd].reify;
783 anfds [fd].reify |= flags; 1564 anfds [fd].reify |= flags;
784 1565
… …
788 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1569 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
789 fdchanges [fdchangecnt - 1] = fd; 1570 fdchanges [fdchangecnt - 1] = fd;
790 } 1571 }
791} 1572}
792 1573
793void inline_speed 1574/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1575inline_speed void ecb_cold
794fd_kill (EV_P_ int fd) 1576fd_kill (EV_P_ int fd)
795{ 1577{
796 ev_io *w; 1578 ev_io *w;
797 1579
798 while ((w = (ev_io *)anfds [fd].head)) 1580 while ((w = (ev_io *)anfds [fd].head))
… …
800 ev_io_stop (EV_A_ w); 1582 ev_io_stop (EV_A_ w);
801 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1583 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
802 } 1584 }
803} 1585}
804 1586
805int inline_size 1587/* check whether the given fd is actually valid, for error recovery */
1588inline_size int ecb_cold
806fd_valid (int fd) 1589fd_valid (int fd)
807{ 1590{
808#ifdef _WIN32 1591#ifdef _WIN32
809 return _get_osfhandle (fd) != -1; 1592 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
810#else 1593#else
811 return fcntl (fd, F_GETFD) != -1; 1594 return fcntl (fd, F_GETFD) != -1;
812#endif 1595#endif
813} 1596}
814 1597
815/* called on EBADF to verify fds */ 1598/* called on EBADF to verify fds */
816static void noinline 1599static void noinline ecb_cold
817fd_ebadf (EV_P) 1600fd_ebadf (EV_P)
818{ 1601{
819 int fd; 1602 int fd;
820 1603
821 for (fd = 0; fd < anfdmax; ++fd) 1604 for (fd = 0; fd < anfdmax; ++fd)
… …
823 if (!fd_valid (fd) && errno == EBADF) 1606 if (!fd_valid (fd) && errno == EBADF)
824 fd_kill (EV_A_ fd); 1607 fd_kill (EV_A_ fd);
825} 1608}
826 1609
827/* called on ENOMEM in select/poll to kill some fds and retry */ 1610/* called on ENOMEM in select/poll to kill some fds and retry */
828static void noinline 1611static void noinline ecb_cold
829fd_enomem (EV_P) 1612fd_enomem (EV_P)
830{ 1613{
831 int fd; 1614 int fd;
832 1615
833 for (fd = anfdmax; fd--; ) 1616 for (fd = anfdmax; fd--; )
834 if (anfds [fd].events) 1617 if (anfds [fd].events)
835 { 1618 {
836 fd_kill (EV_A_ fd); 1619 fd_kill (EV_A_ fd);
837 return; 1620 break;
838 } 1621 }
839} 1622}
840 1623
841/* usually called after fork if backend needs to re-arm all fds from scratch */ 1624/* usually called after fork if backend needs to re-arm all fds from scratch */
842static void noinline 1625static void noinline
… …
847 for (fd = 0; fd < anfdmax; ++fd) 1630 for (fd = 0; fd < anfdmax; ++fd)
848 if (anfds [fd].events) 1631 if (anfds [fd].events)
849 { 1632 {
850 anfds [fd].events = 0; 1633 anfds [fd].events = 0;
851 anfds [fd].emask = 0; 1634 anfds [fd].emask = 0;
852 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1635 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
853 } 1636 }
854} 1637}
855 1638
1639/* used to prepare libev internal fd's */
1640/* this is not fork-safe */
1641inline_speed void
1642fd_intern (int fd)
1643{
1644#ifdef _WIN32
1645 unsigned long arg = 1;
1646 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1647#else
1648 fcntl (fd, F_SETFD, FD_CLOEXEC);
1649 fcntl (fd, F_SETFL, O_NONBLOCK);
1650#endif
1651}
1652
856/*****************************************************************************/ 1653/*****************************************************************************/
857 1654
858/* 1655/*
859 * the heap functions want a real array index. array index 0 uis guaranteed to not 1656 * the heap functions want a real array index. array index 0 is guaranteed to not
860 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1657 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
861 * the branching factor of the d-tree. 1658 * the branching factor of the d-tree.
862 */ 1659 */
863 1660
864/* 1661/*
… …
873#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1670#define HEAP0 (DHEAP - 1) /* index of first element in heap */
874#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1671#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
875#define UPHEAP_DONE(p,k) ((p) == (k)) 1672#define UPHEAP_DONE(p,k) ((p) == (k))
876 1673
877/* away from the root */ 1674/* away from the root */
878void inline_speed 1675inline_speed void
879downheap (ANHE *heap, int N, int k) 1676downheap (ANHE *heap, int N, int k)
880{ 1677{
881 ANHE he = heap [k]; 1678 ANHE he = heap [k];
882 ANHE *E = heap + N + HEAP0; 1679 ANHE *E = heap + N + HEAP0;
883 1680
… …
923#define HEAP0 1 1720#define HEAP0 1
924#define HPARENT(k) ((k) >> 1) 1721#define HPARENT(k) ((k) >> 1)
925#define UPHEAP_DONE(p,k) (!(p)) 1722#define UPHEAP_DONE(p,k) (!(p))
926 1723
927/* away from the root */ 1724/* away from the root */
928void inline_speed 1725inline_speed void
929downheap (ANHE *heap, int N, int k) 1726downheap (ANHE *heap, int N, int k)
930{ 1727{
931 ANHE he = heap [k]; 1728 ANHE he = heap [k];
932 1729
933 for (;;) 1730 for (;;)
934 { 1731 {
935 int c = k << 1; 1732 int c = k << 1;
936 1733
937 if (c > N + HEAP0 - 1) 1734 if (c >= N + HEAP0)
938 break; 1735 break;
939 1736
940 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1737 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
941 ? 1 : 0; 1738 ? 1 : 0;
942 1739
… …
953 ev_active (ANHE_w (he)) = k; 1750 ev_active (ANHE_w (he)) = k;
954} 1751}
955#endif 1752#endif
956 1753
957/* towards the root */ 1754/* towards the root */
958void inline_speed 1755inline_speed void
959upheap (ANHE *heap, int k) 1756upheap (ANHE *heap, int k)
960{ 1757{
961 ANHE he = heap [k]; 1758 ANHE he = heap [k];
962 1759
963 for (;;) 1760 for (;;)
… …
974 1771
975 heap [k] = he; 1772 heap [k] = he;
976 ev_active (ANHE_w (he)) = k; 1773 ev_active (ANHE_w (he)) = k;
977} 1774}
978 1775
979void inline_size 1776/* move an element suitably so it is in a correct place */
1777inline_size void
980adjustheap (ANHE *heap, int N, int k) 1778adjustheap (ANHE *heap, int N, int k)
981{ 1779{
982 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1780 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
983 upheap (heap, k); 1781 upheap (heap, k);
984 else 1782 else
985 downheap (heap, N, k); 1783 downheap (heap, N, k);
986} 1784}
987 1785
988/* rebuild the heap: this function is used only once and executed rarely */ 1786/* rebuild the heap: this function is used only once and executed rarely */
989void inline_size 1787inline_size void
990reheap (ANHE *heap, int N) 1788reheap (ANHE *heap, int N)
991{ 1789{
992 int i; 1790 int i;
993 1791
994 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1792 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
997 upheap (heap, i + HEAP0); 1795 upheap (heap, i + HEAP0);
998} 1796}
999 1797
1000/*****************************************************************************/ 1798/*****************************************************************************/
1001 1799
1800/* associate signal watchers to a signal signal */
1002typedef struct 1801typedef struct
1003{ 1802{
1803 EV_ATOMIC_T pending;
1804#if EV_MULTIPLICITY
1805 EV_P;
1806#endif
1004 WL head; 1807 WL head;
1005 EV_ATOMIC_T gotsig;
1006} ANSIG; 1808} ANSIG;
1007 1809
1008static ANSIG *signals; 1810static ANSIG signals [EV_NSIG - 1];
1009static int signalmax;
1010
1011static EV_ATOMIC_T gotsig;
1012 1811
1013/*****************************************************************************/ 1812/*****************************************************************************/
1014 1813
1015void inline_speed 1814#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1016fd_intern (int fd)
1017{
1018#ifdef _WIN32
1019 unsigned long arg = 1;
1020 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1021#else
1022 fcntl (fd, F_SETFD, FD_CLOEXEC);
1023 fcntl (fd, F_SETFL, O_NONBLOCK);
1024#endif
1025}
1026 1815
1027static void noinline 1816static void noinline ecb_cold
1028evpipe_init (EV_P) 1817evpipe_init (EV_P)
1029{ 1818{
1030 if (!ev_is_active (&pipeev)) 1819 if (!ev_is_active (&pipe_w))
1031 { 1820 {
1032#if EV_USE_EVENTFD 1821# if EV_USE_EVENTFD
1822 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1823 if (evfd < 0 && errno == EINVAL)
1033 if ((evfd = eventfd (0, 0)) >= 0) 1824 evfd = eventfd (0, 0);
1825
1826 if (evfd >= 0)
1034 { 1827 {
1035 evpipe [0] = -1; 1828 evpipe [0] = -1;
1036 fd_intern (evfd); 1829 fd_intern (evfd); /* doing it twice doesn't hurt */
1037 ev_io_set (&pipeev, evfd, EV_READ); 1830 ev_io_set (&pipe_w, evfd, EV_READ);
1038 } 1831 }
1039 else 1832 else
1040#endif 1833# endif
1041 { 1834 {
1042 while (pipe (evpipe)) 1835 while (pipe (evpipe))
1043 ev_syserr ("(libev) error creating signal/async pipe"); 1836 ev_syserr ("(libev) error creating signal/async pipe");
1044 1837
1045 fd_intern (evpipe [0]); 1838 fd_intern (evpipe [0]);
1046 fd_intern (evpipe [1]); 1839 fd_intern (evpipe [1]);
1047 ev_io_set (&pipeev, evpipe [0], EV_READ); 1840 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1048 } 1841 }
1049 1842
1050 ev_io_start (EV_A_ &pipeev); 1843 ev_io_start (EV_A_ &pipe_w);
1051 ev_unref (EV_A); /* watcher should not keep loop alive */ 1844 ev_unref (EV_A); /* watcher should not keep loop alive */
1052 } 1845 }
1053} 1846}
1054 1847
1055void inline_size 1848inline_speed void
1056evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1849evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1057{ 1850{
1058 if (!*flag) 1851 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1852
1853 if (expect_true (*flag))
1854 return;
1855
1856 *flag = 1;
1857
1858 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1859
1860 pipe_write_skipped = 1;
1861
1862 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1863
1864 if (pipe_write_wanted)
1059 { 1865 {
1866 int old_errno;
1867
1868 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1869
1060 int old_errno = errno; /* save errno because write might clobber it */ 1870 old_errno = errno; /* save errno because write will clobber it */
1061
1062 *flag = 1;
1063 1871
1064#if EV_USE_EVENTFD 1872#if EV_USE_EVENTFD
1065 if (evfd >= 0) 1873 if (evfd >= 0)
1066 { 1874 {
1067 uint64_t counter = 1; 1875 uint64_t counter = 1;
1068 write (evfd, &counter, sizeof (uint64_t)); 1876 write (evfd, &counter, sizeof (uint64_t));
1069 } 1877 }
1070 else 1878 else
1071#endif 1879#endif
1880 {
1881 /* win32 people keep sending patches that change this write() to send() */
1882 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1883 /* so when you think this write should be a send instead, please find out */
1884 /* where your send() is from - it's definitely not the microsoft send, and */
1885 /* tell me. thank you. */
1886 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1887 /* check the ev documentation on how to use this flag */
1072 write (evpipe [1], &old_errno, 1); 1888 write (evpipe [1], &(evpipe [1]), 1);
1889 }
1073 1890
1074 errno = old_errno; 1891 errno = old_errno;
1075 } 1892 }
1076} 1893}
1077 1894
1895/* called whenever the libev signal pipe */
1896/* got some events (signal, async) */
1078static void 1897static void
1079pipecb (EV_P_ ev_io *iow, int revents) 1898pipecb (EV_P_ ev_io *iow, int revents)
1080{ 1899{
1900 int i;
1901
1902 if (revents & EV_READ)
1903 {
1081#if EV_USE_EVENTFD 1904#if EV_USE_EVENTFD
1082 if (evfd >= 0) 1905 if (evfd >= 0)
1083 { 1906 {
1084 uint64_t counter; 1907 uint64_t counter;
1085 read (evfd, &counter, sizeof (uint64_t)); 1908 read (evfd, &counter, sizeof (uint64_t));
1086 } 1909 }
1087 else 1910 else
1088#endif 1911#endif
1089 { 1912 {
1090 char dummy; 1913 char dummy;
1914 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1091 read (evpipe [0], &dummy, 1); 1915 read (evpipe [0], &dummy, 1);
1916 }
1917 }
1918
1919 pipe_write_skipped = 0;
1920
1921 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1922
1923#if EV_SIGNAL_ENABLE
1924 if (sig_pending)
1092 } 1925 {
1926 sig_pending = 0;
1093 1927
1094 if (gotsig && ev_is_default_loop (EV_A)) 1928 ECB_MEMORY_FENCE_RELEASE;
1095 {
1096 int signum;
1097 gotsig = 0;
1098 1929
1099 for (signum = signalmax; signum--; ) 1930 for (i = EV_NSIG - 1; i--; )
1100 if (signals [signum].gotsig) 1931 if (expect_false (signals [i].pending))
1101 ev_feed_signal_event (EV_A_ signum + 1); 1932 ev_feed_signal_event (EV_A_ i + 1);
1102 } 1933 }
1934#endif
1103 1935
1104#if EV_ASYNC_ENABLE 1936#if EV_ASYNC_ENABLE
1105 if (gotasync) 1937 if (async_pending)
1106 { 1938 {
1107 int i; 1939 async_pending = 0;
1108 gotasync = 0; 1940
1941 ECB_MEMORY_FENCE_RELEASE;
1109 1942
1110 for (i = asynccnt; i--; ) 1943 for (i = asynccnt; i--; )
1111 if (asyncs [i]->sent) 1944 if (asyncs [i]->sent)
1112 { 1945 {
1113 asyncs [i]->sent = 0; 1946 asyncs [i]->sent = 0;
… …
1117#endif 1950#endif
1118} 1951}
1119 1952
1120/*****************************************************************************/ 1953/*****************************************************************************/
1121 1954
1955void
1956ev_feed_signal (int signum) EV_THROW
1957{
1958#if EV_MULTIPLICITY
1959 EV_P = signals [signum - 1].loop;
1960
1961 if (!EV_A)
1962 return;
1963#endif
1964
1965 if (!ev_active (&pipe_w))
1966 return;
1967
1968 signals [signum - 1].pending = 1;
1969 evpipe_write (EV_A_ &sig_pending);
1970}
1971
1122static void 1972static void
1123ev_sighandler (int signum) 1973ev_sighandler (int signum)
1124{ 1974{
1975#ifdef _WIN32
1976 signal (signum, ev_sighandler);
1977#endif
1978
1979 ev_feed_signal (signum);
1980}
1981
1982void noinline
1983ev_feed_signal_event (EV_P_ int signum) EV_THROW
1984{
1985 WL w;
1986
1987 if (expect_false (signum <= 0 || signum > EV_NSIG))
1988 return;
1989
1990 --signum;
1991
1125#if EV_MULTIPLICITY 1992#if EV_MULTIPLICITY
1126 struct ev_loop *loop = &default_loop_struct; 1993 /* it is permissible to try to feed a signal to the wrong loop */
1127#endif 1994 /* or, likely more useful, feeding a signal nobody is waiting for */
1128 1995
1129#if _WIN32 1996 if (expect_false (signals [signum].loop != EV_A))
1130 signal (signum, ev_sighandler);
1131#endif
1132
1133 signals [signum - 1].gotsig = 1;
1134 evpipe_write (EV_A_ &gotsig);
1135}
1136
1137void noinline
1138ev_feed_signal_event (EV_P_ int signum)
1139{
1140 WL w;
1141
1142#if EV_MULTIPLICITY
1143 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1144#endif
1145
1146 --signum;
1147
1148 if (signum < 0 || signum >= signalmax)
1149 return; 1997 return;
1998#endif
1150 1999
1151 signals [signum].gotsig = 0; 2000 signals [signum].pending = 0;
1152 2001
1153 for (w = signals [signum].head; w; w = w->next) 2002 for (w = signals [signum].head; w; w = w->next)
1154 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2003 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1155} 2004}
1156 2005
2006#if EV_USE_SIGNALFD
2007static void
2008sigfdcb (EV_P_ ev_io *iow, int revents)
2009{
2010 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2011
2012 for (;;)
2013 {
2014 ssize_t res = read (sigfd, si, sizeof (si));
2015
2016 /* not ISO-C, as res might be -1, but works with SuS */
2017 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2018 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2019
2020 if (res < (ssize_t)sizeof (si))
2021 break;
2022 }
2023}
2024#endif
2025
2026#endif
2027
1157/*****************************************************************************/ 2028/*****************************************************************************/
1158 2029
2030#if EV_CHILD_ENABLE
1159static WL childs [EV_PID_HASHSIZE]; 2031static WL childs [EV_PID_HASHSIZE];
1160
1161#ifndef _WIN32
1162 2032
1163static ev_signal childev; 2033static ev_signal childev;
1164 2034
1165#ifndef WIFCONTINUED 2035#ifndef WIFCONTINUED
1166# define WIFCONTINUED(status) 0 2036# define WIFCONTINUED(status) 0
1167#endif 2037#endif
1168 2038
1169void inline_speed 2039/* handle a single child status event */
2040inline_speed void
1170child_reap (EV_P_ int chain, int pid, int status) 2041child_reap (EV_P_ int chain, int pid, int status)
1171{ 2042{
1172 ev_child *w; 2043 ev_child *w;
1173 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2044 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1174 2045
1175 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2046 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1176 { 2047 {
1177 if ((w->pid == pid || !w->pid) 2048 if ((w->pid == pid || !w->pid)
1178 && (!traced || (w->flags & 1))) 2049 && (!traced || (w->flags & 1)))
1179 { 2050 {
1180 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2051 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1187 2058
1188#ifndef WCONTINUED 2059#ifndef WCONTINUED
1189# define WCONTINUED 0 2060# define WCONTINUED 0
1190#endif 2061#endif
1191 2062
2063/* called on sigchld etc., calls waitpid */
1192static void 2064static void
1193childcb (EV_P_ ev_signal *sw, int revents) 2065childcb (EV_P_ ev_signal *sw, int revents)
1194{ 2066{
1195 int pid, status; 2067 int pid, status;
1196 2068
… …
1204 /* make sure we are called again until all children have been reaped */ 2076 /* make sure we are called again until all children have been reaped */
1205 /* we need to do it this way so that the callback gets called before we continue */ 2077 /* we need to do it this way so that the callback gets called before we continue */
1206 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2078 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1207 2079
1208 child_reap (EV_A_ pid, pid, status); 2080 child_reap (EV_A_ pid, pid, status);
1209 if (EV_PID_HASHSIZE > 1) 2081 if ((EV_PID_HASHSIZE) > 1)
1210 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2082 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1211} 2083}
1212 2084
1213#endif 2085#endif
1214 2086
1215/*****************************************************************************/ 2087/*****************************************************************************/
1216 2088
2089#if EV_USE_IOCP
2090# include "ev_iocp.c"
2091#endif
1217#if EV_USE_PORT 2092#if EV_USE_PORT
1218# include "ev_port.c" 2093# include "ev_port.c"
1219#endif 2094#endif
1220#if EV_USE_KQUEUE 2095#if EV_USE_KQUEUE
1221# include "ev_kqueue.c" 2096# include "ev_kqueue.c"
… …
1228#endif 2103#endif
1229#if EV_USE_SELECT 2104#if EV_USE_SELECT
1230# include "ev_select.c" 2105# include "ev_select.c"
1231#endif 2106#endif
1232 2107
1233int 2108int ecb_cold
1234ev_version_major (void) 2109ev_version_major (void) EV_THROW
1235{ 2110{
1236 return EV_VERSION_MAJOR; 2111 return EV_VERSION_MAJOR;
1237} 2112}
1238 2113
1239int 2114int ecb_cold
1240ev_version_minor (void) 2115ev_version_minor (void) EV_THROW
1241{ 2116{
1242 return EV_VERSION_MINOR; 2117 return EV_VERSION_MINOR;
1243} 2118}
1244 2119
1245/* return true if we are running with elevated privileges and should ignore env variables */ 2120/* return true if we are running with elevated privileges and should ignore env variables */
1246int inline_size 2121int inline_size ecb_cold
1247enable_secure (void) 2122enable_secure (void)
1248{ 2123{
1249#ifdef _WIN32 2124#ifdef _WIN32
1250 return 0; 2125 return 0;
1251#else 2126#else
1252 return getuid () != geteuid () 2127 return getuid () != geteuid ()
1253 || getgid () != getegid (); 2128 || getgid () != getegid ();
1254#endif 2129#endif
1255} 2130}
1256 2131
1257unsigned int 2132unsigned int ecb_cold
1258ev_supported_backends (void) 2133ev_supported_backends (void) EV_THROW
1259{ 2134{
1260 unsigned int flags = 0; 2135 unsigned int flags = 0;
1261 2136
1262 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2137 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1263 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2138 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1266 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2141 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1267 2142
1268 return flags; 2143 return flags;
1269} 2144}
1270 2145
1271unsigned int 2146unsigned int ecb_cold
1272ev_recommended_backends (void) 2147ev_recommended_backends (void) EV_THROW
1273{ 2148{
1274 unsigned int flags = ev_supported_backends (); 2149 unsigned int flags = ev_supported_backends ();
1275 2150
1276#ifndef __NetBSD__ 2151#ifndef __NetBSD__
1277 /* kqueue is borked on everything but netbsd apparently */ 2152 /* kqueue is borked on everything but netbsd apparently */
… …
1281#ifdef __APPLE__ 2156#ifdef __APPLE__
1282 /* only select works correctly on that "unix-certified" platform */ 2157 /* only select works correctly on that "unix-certified" platform */
1283 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2158 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1284 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2159 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1285#endif 2160#endif
2161#ifdef __FreeBSD__
2162 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2163#endif
1286 2164
1287 return flags; 2165 return flags;
1288} 2166}
1289 2167
2168unsigned int ecb_cold
2169ev_embeddable_backends (void) EV_THROW
2170{
2171 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2172
2173 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2174 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2175 flags &= ~EVBACKEND_EPOLL;
2176
2177 return flags;
2178}
2179
1290unsigned int 2180unsigned int
1291ev_embeddable_backends (void) 2181ev_backend (EV_P) EV_THROW
1292{ 2182{
1293 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2183 return backend;
1294
1295 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1296 /* please fix it and tell me how to detect the fix */
1297 flags &= ~EVBACKEND_EPOLL;
1298
1299 return flags;
1300} 2184}
1301 2185
2186#if EV_FEATURE_API
1302unsigned int 2187unsigned int
1303ev_backend (EV_P) 2188ev_iteration (EV_P) EV_THROW
1304{ 2189{
1305 return backend; 2190 return loop_count;
1306} 2191}
1307 2192
1308unsigned int 2193unsigned int
1309ev_loop_count (EV_P) 2194ev_depth (EV_P) EV_THROW
1310{ 2195{
1311 return loop_count; 2196 return loop_depth;
1312} 2197}
1313 2198
1314void 2199void
1315ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2200ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1316{ 2201{
1317 io_blocktime = interval; 2202 io_blocktime = interval;
1318} 2203}
1319 2204
1320void 2205void
1321ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2206ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1322{ 2207{
1323 timeout_blocktime = interval; 2208 timeout_blocktime = interval;
1324} 2209}
1325 2210
2211void
2212ev_set_userdata (EV_P_ void *data) EV_THROW
2213{
2214 userdata = data;
2215}
2216
2217void *
2218ev_userdata (EV_P) EV_THROW
2219{
2220 return userdata;
2221}
2222
2223void
2224ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2225{
2226 invoke_cb = invoke_pending_cb;
2227}
2228
2229void
2230ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2231{
2232 release_cb = release;
2233 acquire_cb = acquire;
2234}
2235#endif
2236
2237/* initialise a loop structure, must be zero-initialised */
1326static void noinline 2238static void noinline ecb_cold
1327loop_init (EV_P_ unsigned int flags) 2239loop_init (EV_P_ unsigned int flags) EV_THROW
1328{ 2240{
1329 if (!backend) 2241 if (!backend)
1330 { 2242 {
2243 origflags = flags;
2244
1331#if EV_USE_REALTIME 2245#if EV_USE_REALTIME
1332 if (!have_realtime) 2246 if (!have_realtime)
1333 { 2247 {
1334 struct timespec ts; 2248 struct timespec ts;
1335 2249
… …
1346 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2260 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1347 have_monotonic = 1; 2261 have_monotonic = 1;
1348 } 2262 }
1349#endif 2263#endif
1350 2264
1351 ev_rt_now = ev_time ();
1352 mn_now = get_clock ();
1353 now_floor = mn_now;
1354 rtmn_diff = ev_rt_now - mn_now;
1355
1356 io_blocktime = 0.;
1357 timeout_blocktime = 0.;
1358 backend = 0;
1359 backend_fd = -1;
1360 gotasync = 0;
1361#if EV_USE_INOTIFY
1362 fs_fd = -2;
1363#endif
1364
1365 /* pid check not overridable via env */ 2265 /* pid check not overridable via env */
1366#ifndef _WIN32 2266#ifndef _WIN32
1367 if (flags & EVFLAG_FORKCHECK) 2267 if (flags & EVFLAG_FORKCHECK)
1368 curpid = getpid (); 2268 curpid = getpid ();
1369#endif 2269#endif
… …
1371 if (!(flags & EVFLAG_NOENV) 2271 if (!(flags & EVFLAG_NOENV)
1372 && !enable_secure () 2272 && !enable_secure ()
1373 && getenv ("LIBEV_FLAGS")) 2273 && getenv ("LIBEV_FLAGS"))
1374 flags = atoi (getenv ("LIBEV_FLAGS")); 2274 flags = atoi (getenv ("LIBEV_FLAGS"));
1375 2275
1376 if (!(flags & 0x0000ffffU)) 2276 ev_rt_now = ev_time ();
2277 mn_now = get_clock ();
2278 now_floor = mn_now;
2279 rtmn_diff = ev_rt_now - mn_now;
2280#if EV_FEATURE_API
2281 invoke_cb = ev_invoke_pending;
2282#endif
2283
2284 io_blocktime = 0.;
2285 timeout_blocktime = 0.;
2286 backend = 0;
2287 backend_fd = -1;
2288 sig_pending = 0;
2289#if EV_ASYNC_ENABLE
2290 async_pending = 0;
2291#endif
2292 pipe_write_skipped = 0;
2293 pipe_write_wanted = 0;
2294#if EV_USE_INOTIFY
2295 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2296#endif
2297#if EV_USE_SIGNALFD
2298 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2299#endif
2300
2301 if (!(flags & EVBACKEND_MASK))
1377 flags |= ev_recommended_backends (); 2302 flags |= ev_recommended_backends ();
1378 2303
2304#if EV_USE_IOCP
2305 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2306#endif
1379#if EV_USE_PORT 2307#if EV_USE_PORT
1380 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2308 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1381#endif 2309#endif
1382#if EV_USE_KQUEUE 2310#if EV_USE_KQUEUE
1383 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2311 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1390#endif 2318#endif
1391#if EV_USE_SELECT 2319#if EV_USE_SELECT
1392 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2320 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1393#endif 2321#endif
1394 2322
2323 ev_prepare_init (&pending_w, pendingcb);
2324
2325#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1395 ev_init (&pipeev, pipecb); 2326 ev_init (&pipe_w, pipecb);
1396 ev_set_priority (&pipeev, EV_MAXPRI); 2327 ev_set_priority (&pipe_w, EV_MAXPRI);
2328#endif
1397 } 2329 }
1398} 2330}
1399 2331
1400static void noinline 2332/* free up a loop structure */
2333void ecb_cold
1401loop_destroy (EV_P) 2334ev_loop_destroy (EV_P)
1402{ 2335{
1403 int i; 2336 int i;
1404 2337
2338#if EV_MULTIPLICITY
2339 /* mimic free (0) */
2340 if (!EV_A)
2341 return;
2342#endif
2343
2344#if EV_CLEANUP_ENABLE
2345 /* queue cleanup watchers (and execute them) */
2346 if (expect_false (cleanupcnt))
2347 {
2348 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2349 EV_INVOKE_PENDING;
2350 }
2351#endif
2352
2353#if EV_CHILD_ENABLE
2354 if (ev_is_active (&childev))
2355 {
2356 ev_ref (EV_A); /* child watcher */
2357 ev_signal_stop (EV_A_ &childev);
2358 }
2359#endif
2360
1405 if (ev_is_active (&pipeev)) 2361 if (ev_is_active (&pipe_w))
1406 { 2362 {
1407 ev_ref (EV_A); /* signal watcher */ 2363 /*ev_ref (EV_A);*/
1408 ev_io_stop (EV_A_ &pipeev); 2364 /*ev_io_stop (EV_A_ &pipe_w);*/
1409 2365
1410#if EV_USE_EVENTFD 2366#if EV_USE_EVENTFD
1411 if (evfd >= 0) 2367 if (evfd >= 0)
1412 close (evfd); 2368 close (evfd);
1413#endif 2369#endif
1414 2370
1415 if (evpipe [0] >= 0) 2371 if (evpipe [0] >= 0)
1416 { 2372 {
1417 close (evpipe [0]); 2373 EV_WIN32_CLOSE_FD (evpipe [0]);
1418 close (evpipe [1]); 2374 EV_WIN32_CLOSE_FD (evpipe [1]);
1419 } 2375 }
1420 } 2376 }
2377
2378#if EV_USE_SIGNALFD
2379 if (ev_is_active (&sigfd_w))
2380 close (sigfd);
2381#endif
1421 2382
1422#if EV_USE_INOTIFY 2383#if EV_USE_INOTIFY
1423 if (fs_fd >= 0) 2384 if (fs_fd >= 0)
1424 close (fs_fd); 2385 close (fs_fd);
1425#endif 2386#endif
1426 2387
1427 if (backend_fd >= 0) 2388 if (backend_fd >= 0)
1428 close (backend_fd); 2389 close (backend_fd);
1429 2390
2391#if EV_USE_IOCP
2392 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2393#endif
1430#if EV_USE_PORT 2394#if EV_USE_PORT
1431 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2395 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1432#endif 2396#endif
1433#if EV_USE_KQUEUE 2397#if EV_USE_KQUEUE
1434 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2398 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1449#if EV_IDLE_ENABLE 2413#if EV_IDLE_ENABLE
1450 array_free (idle, [i]); 2414 array_free (idle, [i]);
1451#endif 2415#endif
1452 } 2416 }
1453 2417
1454 ev_free (anfds); anfdmax = 0; 2418 ev_free (anfds); anfds = 0; anfdmax = 0;
1455 2419
1456 /* have to use the microsoft-never-gets-it-right macro */ 2420 /* have to use the microsoft-never-gets-it-right macro */
2421 array_free (rfeed, EMPTY);
1457 array_free (fdchange, EMPTY); 2422 array_free (fdchange, EMPTY);
1458 array_free (timer, EMPTY); 2423 array_free (timer, EMPTY);
1459#if EV_PERIODIC_ENABLE 2424#if EV_PERIODIC_ENABLE
1460 array_free (periodic, EMPTY); 2425 array_free (periodic, EMPTY);
1461#endif 2426#endif
1462#if EV_FORK_ENABLE 2427#if EV_FORK_ENABLE
1463 array_free (fork, EMPTY); 2428 array_free (fork, EMPTY);
1464#endif 2429#endif
2430#if EV_CLEANUP_ENABLE
2431 array_free (cleanup, EMPTY);
2432#endif
1465 array_free (prepare, EMPTY); 2433 array_free (prepare, EMPTY);
1466 array_free (check, EMPTY); 2434 array_free (check, EMPTY);
1467#if EV_ASYNC_ENABLE 2435#if EV_ASYNC_ENABLE
1468 array_free (async, EMPTY); 2436 array_free (async, EMPTY);
1469#endif 2437#endif
1470 2438
1471 backend = 0; 2439 backend = 0;
2440
2441#if EV_MULTIPLICITY
2442 if (ev_is_default_loop (EV_A))
2443#endif
2444 ev_default_loop_ptr = 0;
2445#if EV_MULTIPLICITY
2446 else
2447 ev_free (EV_A);
2448#endif
1472} 2449}
1473 2450
1474#if EV_USE_INOTIFY 2451#if EV_USE_INOTIFY
1475void inline_size infy_fork (EV_P); 2452inline_size void infy_fork (EV_P);
1476#endif 2453#endif
1477 2454
1478void inline_size 2455inline_size void
1479loop_fork (EV_P) 2456loop_fork (EV_P)
1480{ 2457{
1481#if EV_USE_PORT 2458#if EV_USE_PORT
1482 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2459 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1483#endif 2460#endif
… …
1489#endif 2466#endif
1490#if EV_USE_INOTIFY 2467#if EV_USE_INOTIFY
1491 infy_fork (EV_A); 2468 infy_fork (EV_A);
1492#endif 2469#endif
1493 2470
1494 if (ev_is_active (&pipeev)) 2471 if (ev_is_active (&pipe_w))
1495 { 2472 {
1496 /* this "locks" the handlers against writing to the pipe */ 2473 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1497 /* while we modify the fd vars */
1498 gotsig = 1;
1499#if EV_ASYNC_ENABLE
1500 gotasync = 1;
1501#endif
1502 2474
1503 ev_ref (EV_A); 2475 ev_ref (EV_A);
1504 ev_io_stop (EV_A_ &pipeev); 2476 ev_io_stop (EV_A_ &pipe_w);
1505 2477
1506#if EV_USE_EVENTFD 2478#if EV_USE_EVENTFD
1507 if (evfd >= 0) 2479 if (evfd >= 0)
1508 close (evfd); 2480 close (evfd);
1509#endif 2481#endif
1510 2482
1511 if (evpipe [0] >= 0) 2483 if (evpipe [0] >= 0)
1512 { 2484 {
1513 close (evpipe [0]); 2485 EV_WIN32_CLOSE_FD (evpipe [0]);
1514 close (evpipe [1]); 2486 EV_WIN32_CLOSE_FD (evpipe [1]);
1515 } 2487 }
1516 2488
2489#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1517 evpipe_init (EV_A); 2490 evpipe_init (EV_A);
1518 /* now iterate over everything, in case we missed something */ 2491 /* now iterate over everything, in case we missed something */
1519 pipecb (EV_A_ &pipeev, EV_READ); 2492 pipecb (EV_A_ &pipe_w, EV_READ);
2493#endif
1520 } 2494 }
1521 2495
1522 postfork = 0; 2496 postfork = 0;
1523} 2497}
1524 2498
1525#if EV_MULTIPLICITY 2499#if EV_MULTIPLICITY
1526 2500
1527struct ev_loop * 2501struct ev_loop * ecb_cold
1528ev_loop_new (unsigned int flags) 2502ev_loop_new (unsigned int flags) EV_THROW
1529{ 2503{
1530 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2504 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1531 2505
1532 memset (loop, 0, sizeof (struct ev_loop)); 2506 memset (EV_A, 0, sizeof (struct ev_loop));
1533
1534 loop_init (EV_A_ flags); 2507 loop_init (EV_A_ flags);
1535 2508
1536 if (ev_backend (EV_A)) 2509 if (ev_backend (EV_A))
1537 return loop; 2510 return EV_A;
1538 2511
2512 ev_free (EV_A);
1539 return 0; 2513 return 0;
1540} 2514}
1541 2515
1542void 2516#endif /* multiplicity */
1543ev_loop_destroy (EV_P)
1544{
1545 loop_destroy (EV_A);
1546 ev_free (loop);
1547}
1548
1549void
1550ev_loop_fork (EV_P)
1551{
1552 postfork = 1; /* must be in line with ev_default_fork */
1553}
1554 2517
1555#if EV_VERIFY 2518#if EV_VERIFY
1556static void noinline 2519static void noinline ecb_cold
1557verify_watcher (EV_P_ W w) 2520verify_watcher (EV_P_ W w)
1558{ 2521{
1559 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2522 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1560 2523
1561 if (w->pending) 2524 if (w->pending)
1562 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2525 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1563} 2526}
1564 2527
1565static void noinline 2528static void noinline ecb_cold
1566verify_heap (EV_P_ ANHE *heap, int N) 2529verify_heap (EV_P_ ANHE *heap, int N)
1567{ 2530{
1568 int i; 2531 int i;
1569 2532
1570 for (i = HEAP0; i < N + HEAP0; ++i) 2533 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1575 2538
1576 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2539 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1577 } 2540 }
1578} 2541}
1579 2542
1580static void noinline 2543static void noinline ecb_cold
1581array_verify (EV_P_ W *ws, int cnt) 2544array_verify (EV_P_ W *ws, int cnt)
1582{ 2545{
1583 while (cnt--) 2546 while (cnt--)
1584 { 2547 {
1585 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2548 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1586 verify_watcher (EV_A_ ws [cnt]); 2549 verify_watcher (EV_A_ ws [cnt]);
1587 } 2550 }
1588} 2551}
1589#endif 2552#endif
1590 2553
1591void 2554#if EV_FEATURE_API
1592ev_loop_verify (EV_P) 2555void ecb_cold
2556ev_verify (EV_P) EV_THROW
1593{ 2557{
1594#if EV_VERIFY 2558#if EV_VERIFY
1595 int i; 2559 int i;
1596 WL w; 2560 WL w;
1597 2561
… …
1631#if EV_FORK_ENABLE 2595#if EV_FORK_ENABLE
1632 assert (forkmax >= forkcnt); 2596 assert (forkmax >= forkcnt);
1633 array_verify (EV_A_ (W *)forks, forkcnt); 2597 array_verify (EV_A_ (W *)forks, forkcnt);
1634#endif 2598#endif
1635 2599
2600#if EV_CLEANUP_ENABLE
2601 assert (cleanupmax >= cleanupcnt);
2602 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2603#endif
2604
1636#if EV_ASYNC_ENABLE 2605#if EV_ASYNC_ENABLE
1637 assert (asyncmax >= asynccnt); 2606 assert (asyncmax >= asynccnt);
1638 array_verify (EV_A_ (W *)asyncs, asynccnt); 2607 array_verify (EV_A_ (W *)asyncs, asynccnt);
1639#endif 2608#endif
1640 2609
2610#if EV_PREPARE_ENABLE
1641 assert (preparemax >= preparecnt); 2611 assert (preparemax >= preparecnt);
1642 array_verify (EV_A_ (W *)prepares, preparecnt); 2612 array_verify (EV_A_ (W *)prepares, preparecnt);
2613#endif
1643 2614
2615#if EV_CHECK_ENABLE
1644 assert (checkmax >= checkcnt); 2616 assert (checkmax >= checkcnt);
1645 array_verify (EV_A_ (W *)checks, checkcnt); 2617 array_verify (EV_A_ (W *)checks, checkcnt);
2618#endif
1646 2619
1647# if 0 2620# if 0
2621#if EV_CHILD_ENABLE
1648 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2622 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1649 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2623 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2624#endif
1650# endif 2625# endif
1651#endif 2626#endif
1652} 2627}
1653 2628#endif
1654#endif /* multiplicity */
1655 2629
1656#if EV_MULTIPLICITY 2630#if EV_MULTIPLICITY
1657struct ev_loop * 2631struct ev_loop * ecb_cold
1658ev_default_loop_init (unsigned int flags)
1659#else 2632#else
1660int 2633int
2634#endif
1661ev_default_loop (unsigned int flags) 2635ev_default_loop (unsigned int flags) EV_THROW
1662#endif
1663{ 2636{
1664 if (!ev_default_loop_ptr) 2637 if (!ev_default_loop_ptr)
1665 { 2638 {
1666#if EV_MULTIPLICITY 2639#if EV_MULTIPLICITY
1667 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2640 EV_P = ev_default_loop_ptr = &default_loop_struct;
1668#else 2641#else
1669 ev_default_loop_ptr = 1; 2642 ev_default_loop_ptr = 1;
1670#endif 2643#endif
1671 2644
1672 loop_init (EV_A_ flags); 2645 loop_init (EV_A_ flags);
1673 2646
1674 if (ev_backend (EV_A)) 2647 if (ev_backend (EV_A))
1675 { 2648 {
1676#ifndef _WIN32 2649#if EV_CHILD_ENABLE
1677 ev_signal_init (&childev, childcb, SIGCHLD); 2650 ev_signal_init (&childev, childcb, SIGCHLD);
1678 ev_set_priority (&childev, EV_MAXPRI); 2651 ev_set_priority (&childev, EV_MAXPRI);
1679 ev_signal_start (EV_A_ &childev); 2652 ev_signal_start (EV_A_ &childev);
1680 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2653 ev_unref (EV_A); /* child watcher should not keep loop alive */
1681#endif 2654#endif
… …
1686 2659
1687 return ev_default_loop_ptr; 2660 return ev_default_loop_ptr;
1688} 2661}
1689 2662
1690void 2663void
1691ev_default_destroy (void) 2664ev_loop_fork (EV_P) EV_THROW
1692{ 2665{
1693#if EV_MULTIPLICITY
1694 struct ev_loop *loop = ev_default_loop_ptr;
1695#endif
1696
1697 ev_default_loop_ptr = 0;
1698
1699#ifndef _WIN32
1700 ev_ref (EV_A); /* child watcher */
1701 ev_signal_stop (EV_A_ &childev);
1702#endif
1703
1704 loop_destroy (EV_A);
1705}
1706
1707void
1708ev_default_fork (void)
1709{
1710#if EV_MULTIPLICITY
1711 struct ev_loop *loop = ev_default_loop_ptr;
1712#endif
1713
1714 postfork = 1; /* must be in line with ev_loop_fork */ 2666 postfork = 1; /* must be in line with ev_default_fork */
1715} 2667}
1716 2668
1717/*****************************************************************************/ 2669/*****************************************************************************/
1718 2670
1719void 2671void
1720ev_invoke (EV_P_ void *w, int revents) 2672ev_invoke (EV_P_ void *w, int revents)
1721{ 2673{
1722 EV_CB_INVOKE ((W)w, revents); 2674 EV_CB_INVOKE ((W)w, revents);
1723} 2675}
1724 2676
1725void inline_speed 2677unsigned int
1726call_pending (EV_P) 2678ev_pending_count (EV_P) EV_THROW
1727{ 2679{
1728 int pri; 2680 int pri;
2681 unsigned int count = 0;
1729 2682
1730 for (pri = NUMPRI; pri--; ) 2683 for (pri = NUMPRI; pri--; )
2684 count += pendingcnt [pri];
2685
2686 return count;
2687}
2688
2689void noinline
2690ev_invoke_pending (EV_P)
2691{
2692 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
1731 while (pendingcnt [pri]) 2693 while (pendingcnt [pendingpri])
1732 { 2694 {
1733 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2695 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1734 2696
1735 if (expect_true (p->w))
1736 {
1737 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1738
1739 p->w->pending = 0; 2697 p->w->pending = 0;
1740 EV_CB_INVOKE (p->w, p->events); 2698 EV_CB_INVOKE (p->w, p->events);
1741 EV_FREQUENT_CHECK; 2699 EV_FREQUENT_CHECK;
1742 }
1743 } 2700 }
1744} 2701}
1745 2702
1746#if EV_IDLE_ENABLE 2703#if EV_IDLE_ENABLE
1747void inline_size 2704/* make idle watchers pending. this handles the "call-idle */
2705/* only when higher priorities are idle" logic */
2706inline_size void
1748idle_reify (EV_P) 2707idle_reify (EV_P)
1749{ 2708{
1750 if (expect_false (idleall)) 2709 if (expect_false (idleall))
1751 { 2710 {
1752 int pri; 2711 int pri;
… …
1764 } 2723 }
1765 } 2724 }
1766} 2725}
1767#endif 2726#endif
1768 2727
1769void inline_size 2728/* make timers pending */
2729inline_size void
1770timers_reify (EV_P) 2730timers_reify (EV_P)
1771{ 2731{
1772 EV_FREQUENT_CHECK; 2732 EV_FREQUENT_CHECK;
1773 2733
1774 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2734 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1775 { 2735 {
1776 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2736 do
1777
1778 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1779
1780 /* first reschedule or stop timer */
1781 if (w->repeat)
1782 { 2737 {
2738 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2739
2740 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2741
2742 /* first reschedule or stop timer */
2743 if (w->repeat)
2744 {
1783 ev_at (w) += w->repeat; 2745 ev_at (w) += w->repeat;
1784 if (ev_at (w) < mn_now) 2746 if (ev_at (w) < mn_now)
1785 ev_at (w) = mn_now; 2747 ev_at (w) = mn_now;
1786 2748
1787 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2749 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1788 2750
1789 ANHE_at_cache (timers [HEAP0]); 2751 ANHE_at_cache (timers [HEAP0]);
1790 downheap (timers, timercnt, HEAP0); 2752 downheap (timers, timercnt, HEAP0);
2753 }
2754 else
2755 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2756
2757 EV_FREQUENT_CHECK;
2758 feed_reverse (EV_A_ (W)w);
1791 } 2759 }
1792 else 2760 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1793 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1794 2761
1795 EV_FREQUENT_CHECK; 2762 feed_reverse_done (EV_A_ EV_TIMER);
1796 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1797 } 2763 }
1798} 2764}
1799 2765
1800#if EV_PERIODIC_ENABLE 2766#if EV_PERIODIC_ENABLE
1801void inline_size 2767
2768static void noinline
2769periodic_recalc (EV_P_ ev_periodic *w)
2770{
2771 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2772 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2773
2774 /* the above almost always errs on the low side */
2775 while (at <= ev_rt_now)
2776 {
2777 ev_tstamp nat = at + w->interval;
2778
2779 /* when resolution fails us, we use ev_rt_now */
2780 if (expect_false (nat == at))
2781 {
2782 at = ev_rt_now;
2783 break;
2784 }
2785
2786 at = nat;
2787 }
2788
2789 ev_at (w) = at;
2790}
2791
2792/* make periodics pending */
2793inline_size void
1802periodics_reify (EV_P) 2794periodics_reify (EV_P)
1803{ 2795{
1804 EV_FREQUENT_CHECK; 2796 EV_FREQUENT_CHECK;
1805 2797
1806 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2798 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1807 { 2799 {
1808 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2800 int feed_count = 0;
1809 2801
1810 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2802 do
1811
1812 /* first reschedule or stop timer */
1813 if (w->reschedule_cb)
1814 { 2803 {
2804 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2805
2806 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2807
2808 /* first reschedule or stop timer */
2809 if (w->reschedule_cb)
2810 {
1815 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2811 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1816 2812
1817 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2813 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1818 2814
1819 ANHE_at_cache (periodics [HEAP0]); 2815 ANHE_at_cache (periodics [HEAP0]);
1820 downheap (periodics, periodiccnt, HEAP0); 2816 downheap (periodics, periodiccnt, HEAP0);
2817 }
2818 else if (w->interval)
2819 {
2820 periodic_recalc (EV_A_ w);
2821 ANHE_at_cache (periodics [HEAP0]);
2822 downheap (periodics, periodiccnt, HEAP0);
2823 }
2824 else
2825 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2826
2827 EV_FREQUENT_CHECK;
2828 feed_reverse (EV_A_ (W)w);
1821 } 2829 }
1822 else if (w->interval) 2830 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1823 {
1824 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1825 /* if next trigger time is not sufficiently in the future, put it there */
1826 /* this might happen because of floating point inexactness */
1827 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1828 {
1829 ev_at (w) += w->interval;
1830 2831
1831 /* if interval is unreasonably low we might still have a time in the past */
1832 /* so correct this. this will make the periodic very inexact, but the user */
1833 /* has effectively asked to get triggered more often than possible */
1834 if (ev_at (w) < ev_rt_now)
1835 ev_at (w) = ev_rt_now;
1836 }
1837
1838 ANHE_at_cache (periodics [HEAP0]);
1839 downheap (periodics, periodiccnt, HEAP0);
1840 }
1841 else
1842 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1843
1844 EV_FREQUENT_CHECK;
1845 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2832 feed_reverse_done (EV_A_ EV_PERIODIC);
1846 } 2833 }
1847} 2834}
1848 2835
2836/* simply recalculate all periodics */
2837/* TODO: maybe ensure that at least one event happens when jumping forward? */
1849static void noinline 2838static void noinline ecb_cold
1850periodics_reschedule (EV_P) 2839periodics_reschedule (EV_P)
1851{ 2840{
1852 int i; 2841 int i;
1853 2842
1854 /* adjust periodics after time jump */ 2843 /* adjust periodics after time jump */
… …
1857 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2846 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1858 2847
1859 if (w->reschedule_cb) 2848 if (w->reschedule_cb)
1860 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2849 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1861 else if (w->interval) 2850 else if (w->interval)
1862 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2851 periodic_recalc (EV_A_ w);
1863 2852
1864 ANHE_at_cache (periodics [i]); 2853 ANHE_at_cache (periodics [i]);
1865 } 2854 }
1866 2855
1867 reheap (periodics, periodiccnt); 2856 reheap (periodics, periodiccnt);
1868} 2857}
1869#endif 2858#endif
1870 2859
1871void inline_speed 2860/* adjust all timers by a given offset */
2861static void noinline ecb_cold
2862timers_reschedule (EV_P_ ev_tstamp adjust)
2863{
2864 int i;
2865
2866 for (i = 0; i < timercnt; ++i)
2867 {
2868 ANHE *he = timers + i + HEAP0;
2869 ANHE_w (*he)->at += adjust;
2870 ANHE_at_cache (*he);
2871 }
2872}
2873
2874/* fetch new monotonic and realtime times from the kernel */
2875/* also detect if there was a timejump, and act accordingly */
2876inline_speed void
1872time_update (EV_P_ ev_tstamp max_block) 2877time_update (EV_P_ ev_tstamp max_block)
1873{ 2878{
1874 int i;
1875
1876#if EV_USE_MONOTONIC 2879#if EV_USE_MONOTONIC
1877 if (expect_true (have_monotonic)) 2880 if (expect_true (have_monotonic))
1878 { 2881 {
2882 int i;
1879 ev_tstamp odiff = rtmn_diff; 2883 ev_tstamp odiff = rtmn_diff;
1880 2884
1881 mn_now = get_clock (); 2885 mn_now = get_clock ();
1882 2886
1883 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2887 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1899 * doesn't hurt either as we only do this on time-jumps or 2903 * doesn't hurt either as we only do this on time-jumps or
1900 * in the unlikely event of having been preempted here. 2904 * in the unlikely event of having been preempted here.
1901 */ 2905 */
1902 for (i = 4; --i; ) 2906 for (i = 4; --i; )
1903 { 2907 {
2908 ev_tstamp diff;
1904 rtmn_diff = ev_rt_now - mn_now; 2909 rtmn_diff = ev_rt_now - mn_now;
1905 2910
2911 diff = odiff - rtmn_diff;
2912
1906 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2913 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1907 return; /* all is well */ 2914 return; /* all is well */
1908 2915
1909 ev_rt_now = ev_time (); 2916 ev_rt_now = ev_time ();
1910 mn_now = get_clock (); 2917 mn_now = get_clock ();
1911 now_floor = mn_now; 2918 now_floor = mn_now;
1912 } 2919 }
1913 2920
2921 /* no timer adjustment, as the monotonic clock doesn't jump */
2922 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1914# if EV_PERIODIC_ENABLE 2923# if EV_PERIODIC_ENABLE
1915 periodics_reschedule (EV_A); 2924 periodics_reschedule (EV_A);
1916# endif 2925# endif
1917 /* no timer adjustment, as the monotonic clock doesn't jump */
1918 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1919 } 2926 }
1920 else 2927 else
1921#endif 2928#endif
1922 { 2929 {
1923 ev_rt_now = ev_time (); 2930 ev_rt_now = ev_time ();
1924 2931
1925 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2932 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1926 { 2933 {
2934 /* adjust timers. this is easy, as the offset is the same for all of them */
2935 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1927#if EV_PERIODIC_ENABLE 2936#if EV_PERIODIC_ENABLE
1928 periodics_reschedule (EV_A); 2937 periodics_reschedule (EV_A);
1929#endif 2938#endif
1930 /* adjust timers. this is easy, as the offset is the same for all of them */
1931 for (i = 0; i < timercnt; ++i)
1932 {
1933 ANHE *he = timers + i + HEAP0;
1934 ANHE_w (*he)->at += ev_rt_now - mn_now;
1935 ANHE_at_cache (*he);
1936 }
1937 } 2939 }
1938 2940
1939 mn_now = ev_rt_now; 2941 mn_now = ev_rt_now;
1940 } 2942 }
1941} 2943}
1942 2944
1943void 2945int
1944ev_ref (EV_P)
1945{
1946 ++activecnt;
1947}
1948
1949void
1950ev_unref (EV_P)
1951{
1952 --activecnt;
1953}
1954
1955void
1956ev_now_update (EV_P)
1957{
1958 time_update (EV_A_ 1e100);
1959}
1960
1961static int loop_done;
1962
1963void
1964ev_loop (EV_P_ int flags) 2946ev_run (EV_P_ int flags)
1965{ 2947{
2948#if EV_FEATURE_API
2949 ++loop_depth;
2950#endif
2951
2952 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2953
1966 loop_done = EVUNLOOP_CANCEL; 2954 loop_done = EVBREAK_CANCEL;
1967 2955
1968 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2956 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1969 2957
1970 do 2958 do
1971 { 2959 {
1972#if EV_VERIFY >= 2 2960#if EV_VERIFY >= 2
1973 ev_loop_verify (EV_A); 2961 ev_verify (EV_A);
1974#endif 2962#endif
1975 2963
1976#ifndef _WIN32 2964#ifndef _WIN32
1977 if (expect_false (curpid)) /* penalise the forking check even more */ 2965 if (expect_false (curpid)) /* penalise the forking check even more */
1978 if (expect_false (getpid () != curpid)) 2966 if (expect_false (getpid () != curpid))
… …
1986 /* we might have forked, so queue fork handlers */ 2974 /* we might have forked, so queue fork handlers */
1987 if (expect_false (postfork)) 2975 if (expect_false (postfork))
1988 if (forkcnt) 2976 if (forkcnt)
1989 { 2977 {
1990 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2978 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1991 call_pending (EV_A); 2979 EV_INVOKE_PENDING;
1992 } 2980 }
1993#endif 2981#endif
1994 2982
2983#if EV_PREPARE_ENABLE
1995 /* queue prepare watchers (and execute them) */ 2984 /* queue prepare watchers (and execute them) */
1996 if (expect_false (preparecnt)) 2985 if (expect_false (preparecnt))
1997 { 2986 {
1998 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2987 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1999 call_pending (EV_A); 2988 EV_INVOKE_PENDING;
2000 } 2989 }
2990#endif
2991
2992 if (expect_false (loop_done))
2993 break;
2001 2994
2002 /* we might have forked, so reify kernel state if necessary */ 2995 /* we might have forked, so reify kernel state if necessary */
2003 if (expect_false (postfork)) 2996 if (expect_false (postfork))
2004 loop_fork (EV_A); 2997 loop_fork (EV_A);
2005 2998
… …
2009 /* calculate blocking time */ 3002 /* calculate blocking time */
2010 { 3003 {
2011 ev_tstamp waittime = 0.; 3004 ev_tstamp waittime = 0.;
2012 ev_tstamp sleeptime = 0.; 3005 ev_tstamp sleeptime = 0.;
2013 3006
3007 /* remember old timestamp for io_blocktime calculation */
3008 ev_tstamp prev_mn_now = mn_now;
3009
3010 /* update time to cancel out callback processing overhead */
3011 time_update (EV_A_ 1e100);
3012
3013 /* from now on, we want a pipe-wake-up */
3014 pipe_write_wanted = 1;
3015
3016 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3017
2014 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3018 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2015 { 3019 {
2016 /* update time to cancel out callback processing overhead */
2017 time_update (EV_A_ 1e100);
2018
2019 waittime = MAX_BLOCKTIME; 3020 waittime = MAX_BLOCKTIME;
2020 3021
2021 if (timercnt) 3022 if (timercnt)
2022 { 3023 {
2023 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3024 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2024 if (waittime > to) waittime = to; 3025 if (waittime > to) waittime = to;
2025 } 3026 }
2026 3027
2027#if EV_PERIODIC_ENABLE 3028#if EV_PERIODIC_ENABLE
2028 if (periodiccnt) 3029 if (periodiccnt)
2029 { 3030 {
2030 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3031 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2031 if (waittime > to) waittime = to; 3032 if (waittime > to) waittime = to;
2032 } 3033 }
2033#endif 3034#endif
2034 3035
3036 /* don't let timeouts decrease the waittime below timeout_blocktime */
2035 if (expect_false (waittime < timeout_blocktime)) 3037 if (expect_false (waittime < timeout_blocktime))
2036 waittime = timeout_blocktime; 3038 waittime = timeout_blocktime;
2037 3039
2038 sleeptime = waittime - backend_fudge; 3040 /* at this point, we NEED to wait, so we have to ensure */
3041 /* to pass a minimum nonzero value to the backend */
3042 if (expect_false (waittime < backend_mintime))
3043 waittime = backend_mintime;
2039 3044
3045 /* extra check because io_blocktime is commonly 0 */
2040 if (expect_true (sleeptime > io_blocktime)) 3046 if (expect_false (io_blocktime))
2041 sleeptime = io_blocktime;
2042
2043 if (sleeptime)
2044 { 3047 {
3048 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3049
3050 if (sleeptime > waittime - backend_mintime)
3051 sleeptime = waittime - backend_mintime;
3052
3053 if (expect_true (sleeptime > 0.))
3054 {
2045 ev_sleep (sleeptime); 3055 ev_sleep (sleeptime);
2046 waittime -= sleeptime; 3056 waittime -= sleeptime;
3057 }
2047 } 3058 }
2048 } 3059 }
2049 3060
3061#if EV_FEATURE_API
2050 ++loop_count; 3062 ++loop_count;
3063#endif
3064 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2051 backend_poll (EV_A_ waittime); 3065 backend_poll (EV_A_ waittime);
3066 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3067
3068 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3069
3070 if (pipe_write_skipped)
3071 {
3072 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3073 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3074 }
3075
2052 3076
2053 /* update ev_rt_now, do magic */ 3077 /* update ev_rt_now, do magic */
2054 time_update (EV_A_ waittime + sleeptime); 3078 time_update (EV_A_ waittime + sleeptime);
2055 } 3079 }
2056 3080
… …
2063#if EV_IDLE_ENABLE 3087#if EV_IDLE_ENABLE
2064 /* queue idle watchers unless other events are pending */ 3088 /* queue idle watchers unless other events are pending */
2065 idle_reify (EV_A); 3089 idle_reify (EV_A);
2066#endif 3090#endif
2067 3091
3092#if EV_CHECK_ENABLE
2068 /* queue check watchers, to be executed first */ 3093 /* queue check watchers, to be executed first */
2069 if (expect_false (checkcnt)) 3094 if (expect_false (checkcnt))
2070 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3095 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3096#endif
2071 3097
2072 call_pending (EV_A); 3098 EV_INVOKE_PENDING;
2073 } 3099 }
2074 while (expect_true ( 3100 while (expect_true (
2075 activecnt 3101 activecnt
2076 && !loop_done 3102 && !loop_done
2077 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3103 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2078 )); 3104 ));
2079 3105
2080 if (loop_done == EVUNLOOP_ONE) 3106 if (loop_done == EVBREAK_ONE)
2081 loop_done = EVUNLOOP_CANCEL; 3107 loop_done = EVBREAK_CANCEL;
3108
3109#if EV_FEATURE_API
3110 --loop_depth;
3111#endif
3112
3113 return activecnt;
2082} 3114}
2083 3115
2084void 3116void
2085ev_unloop (EV_P_ int how) 3117ev_break (EV_P_ int how) EV_THROW
2086{ 3118{
2087 loop_done = how; 3119 loop_done = how;
2088} 3120}
2089 3121
3122void
3123ev_ref (EV_P) EV_THROW
3124{
3125 ++activecnt;
3126}
3127
3128void
3129ev_unref (EV_P) EV_THROW
3130{
3131 --activecnt;
3132}
3133
3134void
3135ev_now_update (EV_P) EV_THROW
3136{
3137 time_update (EV_A_ 1e100);
3138}
3139
3140void
3141ev_suspend (EV_P) EV_THROW
3142{
3143 ev_now_update (EV_A);
3144}
3145
3146void
3147ev_resume (EV_P) EV_THROW
3148{
3149 ev_tstamp mn_prev = mn_now;
3150
3151 ev_now_update (EV_A);
3152 timers_reschedule (EV_A_ mn_now - mn_prev);
3153#if EV_PERIODIC_ENABLE
3154 /* TODO: really do this? */
3155 periodics_reschedule (EV_A);
3156#endif
3157}
3158
2090/*****************************************************************************/ 3159/*****************************************************************************/
3160/* singly-linked list management, used when the expected list length is short */
2091 3161
2092void inline_size 3162inline_size void
2093wlist_add (WL *head, WL elem) 3163wlist_add (WL *head, WL elem)
2094{ 3164{
2095 elem->next = *head; 3165 elem->next = *head;
2096 *head = elem; 3166 *head = elem;
2097} 3167}
2098 3168
2099void inline_size 3169inline_size void
2100wlist_del (WL *head, WL elem) 3170wlist_del (WL *head, WL elem)
2101{ 3171{
2102 while (*head) 3172 while (*head)
2103 { 3173 {
2104 if (*head == elem) 3174 if (expect_true (*head == elem))
2105 { 3175 {
2106 *head = elem->next; 3176 *head = elem->next;
2107 return; 3177 break;
2108 } 3178 }
2109 3179
2110 head = &(*head)->next; 3180 head = &(*head)->next;
2111 } 3181 }
2112} 3182}
2113 3183
2114void inline_speed 3184/* internal, faster, version of ev_clear_pending */
3185inline_speed void
2115clear_pending (EV_P_ W w) 3186clear_pending (EV_P_ W w)
2116{ 3187{
2117 if (w->pending) 3188 if (w->pending)
2118 { 3189 {
2119 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3190 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2120 w->pending = 0; 3191 w->pending = 0;
2121 } 3192 }
2122} 3193}
2123 3194
2124int 3195int
2125ev_clear_pending (EV_P_ void *w) 3196ev_clear_pending (EV_P_ void *w) EV_THROW
2126{ 3197{
2127 W w_ = (W)w; 3198 W w_ = (W)w;
2128 int pending = w_->pending; 3199 int pending = w_->pending;
2129 3200
2130 if (expect_true (pending)) 3201 if (expect_true (pending))
2131 { 3202 {
2132 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3203 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3204 p->w = (W)&pending_w;
2133 w_->pending = 0; 3205 w_->pending = 0;
2134 p->w = 0;
2135 return p->events; 3206 return p->events;
2136 } 3207 }
2137 else 3208 else
2138 return 0; 3209 return 0;
2139} 3210}
2140 3211
2141void inline_size 3212inline_size void
2142pri_adjust (EV_P_ W w) 3213pri_adjust (EV_P_ W w)
2143{ 3214{
2144 int pri = w->priority; 3215 int pri = ev_priority (w);
2145 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3216 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2146 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3217 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2147 w->priority = pri; 3218 ev_set_priority (w, pri);
2148} 3219}
2149 3220
2150void inline_speed 3221inline_speed void
2151ev_start (EV_P_ W w, int active) 3222ev_start (EV_P_ W w, int active)
2152{ 3223{
2153 pri_adjust (EV_A_ w); 3224 pri_adjust (EV_A_ w);
2154 w->active = active; 3225 w->active = active;
2155 ev_ref (EV_A); 3226 ev_ref (EV_A);
2156} 3227}
2157 3228
2158void inline_size 3229inline_size void
2159ev_stop (EV_P_ W w) 3230ev_stop (EV_P_ W w)
2160{ 3231{
2161 ev_unref (EV_A); 3232 ev_unref (EV_A);
2162 w->active = 0; 3233 w->active = 0;
2163} 3234}
2164 3235
2165/*****************************************************************************/ 3236/*****************************************************************************/
2166 3237
2167void noinline 3238void noinline
2168ev_io_start (EV_P_ ev_io *w) 3239ev_io_start (EV_P_ ev_io *w) EV_THROW
2169{ 3240{
2170 int fd = w->fd; 3241 int fd = w->fd;
2171 3242
2172 if (expect_false (ev_is_active (w))) 3243 if (expect_false (ev_is_active (w)))
2173 return; 3244 return;
2174 3245
2175 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3246 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2176 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3247 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2177 3248
2178 EV_FREQUENT_CHECK; 3249 EV_FREQUENT_CHECK;
2179 3250
2180 ev_start (EV_A_ (W)w, 1); 3251 ev_start (EV_A_ (W)w, 1);
2181 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3252 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2182 wlist_add (&anfds[fd].head, (WL)w); 3253 wlist_add (&anfds[fd].head, (WL)w);
2183 3254
2184 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3255 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2185 w->events &= ~EV__IOFDSET; 3256 w->events &= ~EV__IOFDSET;
2186 3257
2187 EV_FREQUENT_CHECK; 3258 EV_FREQUENT_CHECK;
2188} 3259}
2189 3260
2190void noinline 3261void noinline
2191ev_io_stop (EV_P_ ev_io *w) 3262ev_io_stop (EV_P_ ev_io *w) EV_THROW
2192{ 3263{
2193 clear_pending (EV_A_ (W)w); 3264 clear_pending (EV_A_ (W)w);
2194 if (expect_false (!ev_is_active (w))) 3265 if (expect_false (!ev_is_active (w)))
2195 return; 3266 return;
2196 3267
… …
2199 EV_FREQUENT_CHECK; 3270 EV_FREQUENT_CHECK;
2200 3271
2201 wlist_del (&anfds[w->fd].head, (WL)w); 3272 wlist_del (&anfds[w->fd].head, (WL)w);
2202 ev_stop (EV_A_ (W)w); 3273 ev_stop (EV_A_ (W)w);
2203 3274
2204 fd_change (EV_A_ w->fd, 1); 3275 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2205 3276
2206 EV_FREQUENT_CHECK; 3277 EV_FREQUENT_CHECK;
2207} 3278}
2208 3279
2209void noinline 3280void noinline
2210ev_timer_start (EV_P_ ev_timer *w) 3281ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2211{ 3282{
2212 if (expect_false (ev_is_active (w))) 3283 if (expect_false (ev_is_active (w)))
2213 return; 3284 return;
2214 3285
2215 ev_at (w) += mn_now; 3286 ev_at (w) += mn_now;
… …
2229 3300
2230 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3301 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2231} 3302}
2232 3303
2233void noinline 3304void noinline
2234ev_timer_stop (EV_P_ ev_timer *w) 3305ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2235{ 3306{
2236 clear_pending (EV_A_ (W)w); 3307 clear_pending (EV_A_ (W)w);
2237 if (expect_false (!ev_is_active (w))) 3308 if (expect_false (!ev_is_active (w)))
2238 return; 3309 return;
2239 3310
… …
2251 timers [active] = timers [timercnt + HEAP0]; 3322 timers [active] = timers [timercnt + HEAP0];
2252 adjustheap (timers, timercnt, active); 3323 adjustheap (timers, timercnt, active);
2253 } 3324 }
2254 } 3325 }
2255 3326
2256 EV_FREQUENT_CHECK;
2257
2258 ev_at (w) -= mn_now; 3327 ev_at (w) -= mn_now;
2259 3328
2260 ev_stop (EV_A_ (W)w); 3329 ev_stop (EV_A_ (W)w);
3330
3331 EV_FREQUENT_CHECK;
2261} 3332}
2262 3333
2263void noinline 3334void noinline
2264ev_timer_again (EV_P_ ev_timer *w) 3335ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2265{ 3336{
2266 EV_FREQUENT_CHECK; 3337 EV_FREQUENT_CHECK;
3338
3339 clear_pending (EV_A_ (W)w);
2267 3340
2268 if (ev_is_active (w)) 3341 if (ev_is_active (w))
2269 { 3342 {
2270 if (w->repeat) 3343 if (w->repeat)
2271 { 3344 {
… …
2283 } 3356 }
2284 3357
2285 EV_FREQUENT_CHECK; 3358 EV_FREQUENT_CHECK;
2286} 3359}
2287 3360
3361ev_tstamp
3362ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3363{
3364 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3365}
3366
2288#if EV_PERIODIC_ENABLE 3367#if EV_PERIODIC_ENABLE
2289void noinline 3368void noinline
2290ev_periodic_start (EV_P_ ev_periodic *w) 3369ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2291{ 3370{
2292 if (expect_false (ev_is_active (w))) 3371 if (expect_false (ev_is_active (w)))
2293 return; 3372 return;
2294 3373
2295 if (w->reschedule_cb) 3374 if (w->reschedule_cb)
2296 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3375 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2297 else if (w->interval) 3376 else if (w->interval)
2298 { 3377 {
2299 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3378 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2300 /* this formula differs from the one in periodic_reify because we do not always round up */ 3379 periodic_recalc (EV_A_ w);
2301 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2302 } 3380 }
2303 else 3381 else
2304 ev_at (w) = w->offset; 3382 ev_at (w) = w->offset;
2305 3383
2306 EV_FREQUENT_CHECK; 3384 EV_FREQUENT_CHECK;
… …
2316 3394
2317 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3395 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2318} 3396}
2319 3397
2320void noinline 3398void noinline
2321ev_periodic_stop (EV_P_ ev_periodic *w) 3399ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2322{ 3400{
2323 clear_pending (EV_A_ (W)w); 3401 clear_pending (EV_A_ (W)w);
2324 if (expect_false (!ev_is_active (w))) 3402 if (expect_false (!ev_is_active (w)))
2325 return; 3403 return;
2326 3404
… …
2338 periodics [active] = periodics [periodiccnt + HEAP0]; 3416 periodics [active] = periodics [periodiccnt + HEAP0];
2339 adjustheap (periodics, periodiccnt, active); 3417 adjustheap (periodics, periodiccnt, active);
2340 } 3418 }
2341 } 3419 }
2342 3420
2343 EV_FREQUENT_CHECK;
2344
2345 ev_stop (EV_A_ (W)w); 3421 ev_stop (EV_A_ (W)w);
3422
3423 EV_FREQUENT_CHECK;
2346} 3424}
2347 3425
2348void noinline 3426void noinline
2349ev_periodic_again (EV_P_ ev_periodic *w) 3427ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2350{ 3428{
2351 /* TODO: use adjustheap and recalculation */ 3429 /* TODO: use adjustheap and recalculation */
2352 ev_periodic_stop (EV_A_ w); 3430 ev_periodic_stop (EV_A_ w);
2353 ev_periodic_start (EV_A_ w); 3431 ev_periodic_start (EV_A_ w);
2354} 3432}
… …
2356 3434
2357#ifndef SA_RESTART 3435#ifndef SA_RESTART
2358# define SA_RESTART 0 3436# define SA_RESTART 0
2359#endif 3437#endif
2360 3438
3439#if EV_SIGNAL_ENABLE
3440
2361void noinline 3441void noinline
2362ev_signal_start (EV_P_ ev_signal *w) 3442ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2363{ 3443{
2364#if EV_MULTIPLICITY
2365 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2366#endif
2367 if (expect_false (ev_is_active (w))) 3444 if (expect_false (ev_is_active (w)))
2368 return; 3445 return;
2369 3446
2370 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3447 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2371 3448
2372 evpipe_init (EV_A); 3449#if EV_MULTIPLICITY
3450 assert (("libev: a signal must not be attached to two different loops",
3451 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2373 3452
2374 EV_FREQUENT_CHECK; 3453 signals [w->signum - 1].loop = EV_A;
3454#endif
2375 3455
3456 EV_FREQUENT_CHECK;
3457
3458#if EV_USE_SIGNALFD
3459 if (sigfd == -2)
2376 { 3460 {
2377#ifndef _WIN32 3461 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2378 sigset_t full, prev; 3462 if (sigfd < 0 && errno == EINVAL)
2379 sigfillset (&full); 3463 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2380 sigprocmask (SIG_SETMASK, &full, &prev);
2381#endif
2382 3464
2383 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3465 if (sigfd >= 0)
3466 {
3467 fd_intern (sigfd); /* doing it twice will not hurt */
2384 3468
2385#ifndef _WIN32 3469 sigemptyset (&sigfd_set);
2386 sigprocmask (SIG_SETMASK, &prev, 0); 3470
2387#endif 3471 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3472 ev_set_priority (&sigfd_w, EV_MAXPRI);
3473 ev_io_start (EV_A_ &sigfd_w);
3474 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3475 }
2388 } 3476 }
3477
3478 if (sigfd >= 0)
3479 {
3480 /* TODO: check .head */
3481 sigaddset (&sigfd_set, w->signum);
3482 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3483
3484 signalfd (sigfd, &sigfd_set, 0);
3485 }
3486#endif
2389 3487
2390 ev_start (EV_A_ (W)w, 1); 3488 ev_start (EV_A_ (W)w, 1);
2391 wlist_add (&signals [w->signum - 1].head, (WL)w); 3489 wlist_add (&signals [w->signum - 1].head, (WL)w);
2392 3490
2393 if (!((WL)w)->next) 3491 if (!((WL)w)->next)
3492# if EV_USE_SIGNALFD
3493 if (sigfd < 0) /*TODO*/
3494# endif
2394 { 3495 {
2395#if _WIN32 3496# ifdef _WIN32
3497 evpipe_init (EV_A);
3498
2396 signal (w->signum, ev_sighandler); 3499 signal (w->signum, ev_sighandler);
2397#else 3500# else
2398 struct sigaction sa; 3501 struct sigaction sa;
3502
3503 evpipe_init (EV_A);
3504
2399 sa.sa_handler = ev_sighandler; 3505 sa.sa_handler = ev_sighandler;
2400 sigfillset (&sa.sa_mask); 3506 sigfillset (&sa.sa_mask);
2401 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3507 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2402 sigaction (w->signum, &sa, 0); 3508 sigaction (w->signum, &sa, 0);
3509
3510 if (origflags & EVFLAG_NOSIGMASK)
3511 {
3512 sigemptyset (&sa.sa_mask);
3513 sigaddset (&sa.sa_mask, w->signum);
3514 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3515 }
2403#endif 3516#endif
2404 } 3517 }
2405 3518
2406 EV_FREQUENT_CHECK; 3519 EV_FREQUENT_CHECK;
2407} 3520}
2408 3521
2409void noinline 3522void noinline
2410ev_signal_stop (EV_P_ ev_signal *w) 3523ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2411{ 3524{
2412 clear_pending (EV_A_ (W)w); 3525 clear_pending (EV_A_ (W)w);
2413 if (expect_false (!ev_is_active (w))) 3526 if (expect_false (!ev_is_active (w)))
2414 return; 3527 return;
2415 3528
… …
2417 3530
2418 wlist_del (&signals [w->signum - 1].head, (WL)w); 3531 wlist_del (&signals [w->signum - 1].head, (WL)w);
2419 ev_stop (EV_A_ (W)w); 3532 ev_stop (EV_A_ (W)w);
2420 3533
2421 if (!signals [w->signum - 1].head) 3534 if (!signals [w->signum - 1].head)
3535 {
3536#if EV_MULTIPLICITY
3537 signals [w->signum - 1].loop = 0; /* unattach from signal */
3538#endif
3539#if EV_USE_SIGNALFD
3540 if (sigfd >= 0)
3541 {
3542 sigset_t ss;
3543
3544 sigemptyset (&ss);
3545 sigaddset (&ss, w->signum);
3546 sigdelset (&sigfd_set, w->signum);
3547
3548 signalfd (sigfd, &sigfd_set, 0);
3549 sigprocmask (SIG_UNBLOCK, &ss, 0);
3550 }
3551 else
3552#endif
2422 signal (w->signum, SIG_DFL); 3553 signal (w->signum, SIG_DFL);
3554 }
2423 3555
2424 EV_FREQUENT_CHECK; 3556 EV_FREQUENT_CHECK;
2425} 3557}
3558
3559#endif
3560
3561#if EV_CHILD_ENABLE
2426 3562
2427void 3563void
2428ev_child_start (EV_P_ ev_child *w) 3564ev_child_start (EV_P_ ev_child *w) EV_THROW
2429{ 3565{
2430#if EV_MULTIPLICITY 3566#if EV_MULTIPLICITY
2431 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3567 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2432#endif 3568#endif
2433 if (expect_false (ev_is_active (w))) 3569 if (expect_false (ev_is_active (w)))
2434 return; 3570 return;
2435 3571
2436 EV_FREQUENT_CHECK; 3572 EV_FREQUENT_CHECK;
2437 3573
2438 ev_start (EV_A_ (W)w, 1); 3574 ev_start (EV_A_ (W)w, 1);
2439 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3575 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2440 3576
2441 EV_FREQUENT_CHECK; 3577 EV_FREQUENT_CHECK;
2442} 3578}
2443 3579
2444void 3580void
2445ev_child_stop (EV_P_ ev_child *w) 3581ev_child_stop (EV_P_ ev_child *w) EV_THROW
2446{ 3582{
2447 clear_pending (EV_A_ (W)w); 3583 clear_pending (EV_A_ (W)w);
2448 if (expect_false (!ev_is_active (w))) 3584 if (expect_false (!ev_is_active (w)))
2449 return; 3585 return;
2450 3586
2451 EV_FREQUENT_CHECK; 3587 EV_FREQUENT_CHECK;
2452 3588
2453 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3589 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2454 ev_stop (EV_A_ (W)w); 3590 ev_stop (EV_A_ (W)w);
2455 3591
2456 EV_FREQUENT_CHECK; 3592 EV_FREQUENT_CHECK;
2457} 3593}
3594
3595#endif
2458 3596
2459#if EV_STAT_ENABLE 3597#if EV_STAT_ENABLE
2460 3598
2461# ifdef _WIN32 3599# ifdef _WIN32
2462# undef lstat 3600# undef lstat
… …
2468#define MIN_STAT_INTERVAL 0.1074891 3606#define MIN_STAT_INTERVAL 0.1074891
2469 3607
2470static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3608static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2471 3609
2472#if EV_USE_INOTIFY 3610#if EV_USE_INOTIFY
2473# define EV_INOTIFY_BUFSIZE 8192 3611
3612/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3613# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2474 3614
2475static void noinline 3615static void noinline
2476infy_add (EV_P_ ev_stat *w) 3616infy_add (EV_P_ ev_stat *w)
2477{ 3617{
2478 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); 3618 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);
2479 3619
2480 if (w->wd < 0) 3620 if (w->wd >= 0)
3621 {
3622 struct statfs sfs;
3623
3624 /* now local changes will be tracked by inotify, but remote changes won't */
3625 /* unless the filesystem is known to be local, we therefore still poll */
3626 /* also do poll on <2.6.25, but with normal frequency */
3627
3628 if (!fs_2625)
3629 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3630 else if (!statfs (w->path, &sfs)
3631 && (sfs.f_type == 0x1373 /* devfs */
3632 || sfs.f_type == 0xEF53 /* ext2/3 */
3633 || sfs.f_type == 0x3153464a /* jfs */
3634 || sfs.f_type == 0x52654973 /* reiser3 */
3635 || sfs.f_type == 0x01021994 /* tempfs */
3636 || sfs.f_type == 0x58465342 /* xfs */))
3637 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3638 else
3639 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2481 { 3640 }
3641 else
3642 {
3643 /* can't use inotify, continue to stat */
2482 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3644 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2483 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2484 3645
2485 /* monitor some parent directory for speedup hints */ 3646 /* if path is not there, monitor some parent directory for speedup hints */
2486 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3647 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2487 /* but an efficiency issue only */ 3648 /* but an efficiency issue only */
2488 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3649 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2489 { 3650 {
2490 char path [4096]; 3651 char path [4096];
… …
2500 if (!pend || pend == path) 3661 if (!pend || pend == path)
2501 break; 3662 break;
2502 3663
2503 *pend = 0; 3664 *pend = 0;
2504 w->wd = inotify_add_watch (fs_fd, path, mask); 3665 w->wd = inotify_add_watch (fs_fd, path, mask);
2505 } 3666 }
2506 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3667 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2507 } 3668 }
2508 } 3669 }
2509 3670
2510 if (w->wd >= 0) 3671 if (w->wd >= 0)
2511 {
2512 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3672 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2513 3673
2514 /* now local changes will be tracked by inotify, but remote changes won't */ 3674 /* now re-arm timer, if required */
2515 /* unless the filesystem it known to be local, we therefore still poll */ 3675 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2516 /* also do poll on <2.6.25, but with normal frequency */
2517 struct statfs sfs;
2518
2519 if (fs_2625 && !statfs (w->path, &sfs))
2520 if (sfs.f_type == 0x1373 /* devfs */
2521 || sfs.f_type == 0xEF53 /* ext2/3 */
2522 || sfs.f_type == 0x3153464a /* jfs */
2523 || sfs.f_type == 0x52654973 /* reiser3 */
2524 || sfs.f_type == 0x01021994 /* tempfs */
2525 || sfs.f_type == 0x58465342 /* xfs */)
2526 return;
2527
2528 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2529 ev_timer_again (EV_A_ &w->timer); 3676 ev_timer_again (EV_A_ &w->timer);
2530 } 3677 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2531} 3678}
2532 3679
2533static void noinline 3680static void noinline
2534infy_del (EV_P_ ev_stat *w) 3681infy_del (EV_P_ ev_stat *w)
2535{ 3682{
… …
2538 3685
2539 if (wd < 0) 3686 if (wd < 0)
2540 return; 3687 return;
2541 3688
2542 w->wd = -2; 3689 w->wd = -2;
2543 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3690 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2544 wlist_del (&fs_hash [slot].head, (WL)w); 3691 wlist_del (&fs_hash [slot].head, (WL)w);
2545 3692
2546 /* remove this watcher, if others are watching it, they will rearm */ 3693 /* remove this watcher, if others are watching it, they will rearm */
2547 inotify_rm_watch (fs_fd, wd); 3694 inotify_rm_watch (fs_fd, wd);
2548} 3695}
… …
2550static void noinline 3697static void noinline
2551infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3698infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2552{ 3699{
2553 if (slot < 0) 3700 if (slot < 0)
2554 /* overflow, need to check for all hash slots */ 3701 /* overflow, need to check for all hash slots */
2555 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3702 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2556 infy_wd (EV_A_ slot, wd, ev); 3703 infy_wd (EV_A_ slot, wd, ev);
2557 else 3704 else
2558 { 3705 {
2559 WL w_; 3706 WL w_;
2560 3707
2561 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3708 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2562 { 3709 {
2563 ev_stat *w = (ev_stat *)w_; 3710 ev_stat *w = (ev_stat *)w_;
2564 w_ = w_->next; /* lets us remove this watcher and all before it */ 3711 w_ = w_->next; /* lets us remove this watcher and all before it */
2565 3712
2566 if (w->wd == wd || wd == -1) 3713 if (w->wd == wd || wd == -1)
2567 { 3714 {
2568 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3715 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2569 { 3716 {
2570 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3717 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2571 w->wd = -1; 3718 w->wd = -1;
2572 infy_add (EV_A_ w); /* re-add, no matter what */ 3719 infy_add (EV_A_ w); /* re-add, no matter what */
2573 } 3720 }
2574 3721
2575 stat_timer_cb (EV_A_ &w->timer, 0); 3722 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2580 3727
2581static void 3728static void
2582infy_cb (EV_P_ ev_io *w, int revents) 3729infy_cb (EV_P_ ev_io *w, int revents)
2583{ 3730{
2584 char buf [EV_INOTIFY_BUFSIZE]; 3731 char buf [EV_INOTIFY_BUFSIZE];
2585 struct inotify_event *ev = (struct inotify_event *)buf;
2586 int ofs; 3732 int ofs;
2587 int len = read (fs_fd, buf, sizeof (buf)); 3733 int len = read (fs_fd, buf, sizeof (buf));
2588 3734
2589 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3735 for (ofs = 0; ofs < len; )
3736 {
3737 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2590 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3738 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3739 ofs += sizeof (struct inotify_event) + ev->len;
3740 }
2591} 3741}
2592 3742
2593void inline_size 3743inline_size void ecb_cold
2594check_2625 (EV_P) 3744ev_check_2625 (EV_P)
2595{ 3745{
2596 /* kernels < 2.6.25 are borked 3746 /* kernels < 2.6.25 are borked
2597 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3747 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2598 */ 3748 */
2599 struct utsname buf; 3749 if (ev_linux_version () < 0x020619)
2600 int major, minor, micro;
2601
2602 if (uname (&buf))
2603 return; 3750 return;
2604 3751
2605 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2606 return;
2607
2608 if (major < 2
2609 || (major == 2 && minor < 6)
2610 || (major == 2 && minor == 6 && micro < 25))
2611 return;
2612
2613 fs_2625 = 1; 3752 fs_2625 = 1;
2614} 3753}
2615 3754
2616void inline_size 3755inline_size int
3756infy_newfd (void)
3757{
3758#if defined IN_CLOEXEC && defined IN_NONBLOCK
3759 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3760 if (fd >= 0)
3761 return fd;
3762#endif
3763 return inotify_init ();
3764}
3765
3766inline_size void
2617infy_init (EV_P) 3767infy_init (EV_P)
2618{ 3768{
2619 if (fs_fd != -2) 3769 if (fs_fd != -2)
2620 return; 3770 return;
2621 3771
2622 fs_fd = -1; 3772 fs_fd = -1;
2623 3773
2624 check_2625 (EV_A); 3774 ev_check_2625 (EV_A);
2625 3775
2626 fs_fd = inotify_init (); 3776 fs_fd = infy_newfd ();
2627 3777
2628 if (fs_fd >= 0) 3778 if (fs_fd >= 0)
2629 { 3779 {
3780 fd_intern (fs_fd);
2630 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3781 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2631 ev_set_priority (&fs_w, EV_MAXPRI); 3782 ev_set_priority (&fs_w, EV_MAXPRI);
2632 ev_io_start (EV_A_ &fs_w); 3783 ev_io_start (EV_A_ &fs_w);
3784 ev_unref (EV_A);
2633 } 3785 }
2634} 3786}
2635 3787
2636void inline_size 3788inline_size void
2637infy_fork (EV_P) 3789infy_fork (EV_P)
2638{ 3790{
2639 int slot; 3791 int slot;
2640 3792
2641 if (fs_fd < 0) 3793 if (fs_fd < 0)
2642 return; 3794 return;
2643 3795
3796 ev_ref (EV_A);
3797 ev_io_stop (EV_A_ &fs_w);
2644 close (fs_fd); 3798 close (fs_fd);
2645 fs_fd = inotify_init (); 3799 fs_fd = infy_newfd ();
2646 3800
3801 if (fs_fd >= 0)
3802 {
3803 fd_intern (fs_fd);
3804 ev_io_set (&fs_w, fs_fd, EV_READ);
3805 ev_io_start (EV_A_ &fs_w);
3806 ev_unref (EV_A);
3807 }
3808
2647 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3809 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2648 { 3810 {
2649 WL w_ = fs_hash [slot].head; 3811 WL w_ = fs_hash [slot].head;
2650 fs_hash [slot].head = 0; 3812 fs_hash [slot].head = 0;
2651 3813
2652 while (w_) 3814 while (w_)
… …
2657 w->wd = -1; 3819 w->wd = -1;
2658 3820
2659 if (fs_fd >= 0) 3821 if (fs_fd >= 0)
2660 infy_add (EV_A_ w); /* re-add, no matter what */ 3822 infy_add (EV_A_ w); /* re-add, no matter what */
2661 else 3823 else
3824 {
3825 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3826 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2662 ev_timer_again (EV_A_ &w->timer); 3827 ev_timer_again (EV_A_ &w->timer);
3828 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3829 }
2663 } 3830 }
2664 } 3831 }
2665} 3832}
2666 3833
2667#endif 3834#endif
… …
2671#else 3838#else
2672# define EV_LSTAT(p,b) lstat (p, b) 3839# define EV_LSTAT(p,b) lstat (p, b)
2673#endif 3840#endif
2674 3841
2675void 3842void
2676ev_stat_stat (EV_P_ ev_stat *w) 3843ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2677{ 3844{
2678 if (lstat (w->path, &w->attr) < 0) 3845 if (lstat (w->path, &w->attr) < 0)
2679 w->attr.st_nlink = 0; 3846 w->attr.st_nlink = 0;
2680 else if (!w->attr.st_nlink) 3847 else if (!w->attr.st_nlink)
2681 w->attr.st_nlink = 1; 3848 w->attr.st_nlink = 1;
… …
2684static void noinline 3851static void noinline
2685stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3852stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2686{ 3853{
2687 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3854 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2688 3855
2689 /* we copy this here each the time so that */ 3856 ev_statdata prev = w->attr;
2690 /* prev has the old value when the callback gets invoked */
2691 w->prev = w->attr;
2692 ev_stat_stat (EV_A_ w); 3857 ev_stat_stat (EV_A_ w);
2693 3858
2694 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3859 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2695 if ( 3860 if (
2696 w->prev.st_dev != w->attr.st_dev 3861 prev.st_dev != w->attr.st_dev
2697 || w->prev.st_ino != w->attr.st_ino 3862 || prev.st_ino != w->attr.st_ino
2698 || w->prev.st_mode != w->attr.st_mode 3863 || prev.st_mode != w->attr.st_mode
2699 || w->prev.st_nlink != w->attr.st_nlink 3864 || prev.st_nlink != w->attr.st_nlink
2700 || w->prev.st_uid != w->attr.st_uid 3865 || prev.st_uid != w->attr.st_uid
2701 || w->prev.st_gid != w->attr.st_gid 3866 || prev.st_gid != w->attr.st_gid
2702 || w->prev.st_rdev != w->attr.st_rdev 3867 || prev.st_rdev != w->attr.st_rdev
2703 || w->prev.st_size != w->attr.st_size 3868 || prev.st_size != w->attr.st_size
2704 || w->prev.st_atime != w->attr.st_atime 3869 || prev.st_atime != w->attr.st_atime
2705 || w->prev.st_mtime != w->attr.st_mtime 3870 || prev.st_mtime != w->attr.st_mtime
2706 || w->prev.st_ctime != w->attr.st_ctime 3871 || prev.st_ctime != w->attr.st_ctime
2707 ) { 3872 ) {
3873 /* we only update w->prev on actual differences */
3874 /* in case we test more often than invoke the callback, */
3875 /* to ensure that prev is always different to attr */
3876 w->prev = prev;
3877
2708 #if EV_USE_INOTIFY 3878 #if EV_USE_INOTIFY
2709 if (fs_fd >= 0) 3879 if (fs_fd >= 0)
2710 { 3880 {
2711 infy_del (EV_A_ w); 3881 infy_del (EV_A_ w);
2712 infy_add (EV_A_ w); 3882 infy_add (EV_A_ w);
… …
2717 ev_feed_event (EV_A_ w, EV_STAT); 3887 ev_feed_event (EV_A_ w, EV_STAT);
2718 } 3888 }
2719} 3889}
2720 3890
2721void 3891void
2722ev_stat_start (EV_P_ ev_stat *w) 3892ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2723{ 3893{
2724 if (expect_false (ev_is_active (w))) 3894 if (expect_false (ev_is_active (w)))
2725 return; 3895 return;
2726 3896
2727 ev_stat_stat (EV_A_ w); 3897 ev_stat_stat (EV_A_ w);
… …
2737 3907
2738 if (fs_fd >= 0) 3908 if (fs_fd >= 0)
2739 infy_add (EV_A_ w); 3909 infy_add (EV_A_ w);
2740 else 3910 else
2741#endif 3911#endif
3912 {
2742 ev_timer_again (EV_A_ &w->timer); 3913 ev_timer_again (EV_A_ &w->timer);
3914 ev_unref (EV_A);
3915 }
2743 3916
2744 ev_start (EV_A_ (W)w, 1); 3917 ev_start (EV_A_ (W)w, 1);
2745 3918
2746 EV_FREQUENT_CHECK; 3919 EV_FREQUENT_CHECK;
2747} 3920}
2748 3921
2749void 3922void
2750ev_stat_stop (EV_P_ ev_stat *w) 3923ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2751{ 3924{
2752 clear_pending (EV_A_ (W)w); 3925 clear_pending (EV_A_ (W)w);
2753 if (expect_false (!ev_is_active (w))) 3926 if (expect_false (!ev_is_active (w)))
2754 return; 3927 return;
2755 3928
2756 EV_FREQUENT_CHECK; 3929 EV_FREQUENT_CHECK;
2757 3930
2758#if EV_USE_INOTIFY 3931#if EV_USE_INOTIFY
2759 infy_del (EV_A_ w); 3932 infy_del (EV_A_ w);
2760#endif 3933#endif
3934
3935 if (ev_is_active (&w->timer))
3936 {
3937 ev_ref (EV_A);
2761 ev_timer_stop (EV_A_ &w->timer); 3938 ev_timer_stop (EV_A_ &w->timer);
3939 }
2762 3940
2763 ev_stop (EV_A_ (W)w); 3941 ev_stop (EV_A_ (W)w);
2764 3942
2765 EV_FREQUENT_CHECK; 3943 EV_FREQUENT_CHECK;
2766} 3944}
2767#endif 3945#endif
2768 3946
2769#if EV_IDLE_ENABLE 3947#if EV_IDLE_ENABLE
2770void 3948void
2771ev_idle_start (EV_P_ ev_idle *w) 3949ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2772{ 3950{
2773 if (expect_false (ev_is_active (w))) 3951 if (expect_false (ev_is_active (w)))
2774 return; 3952 return;
2775 3953
2776 pri_adjust (EV_A_ (W)w); 3954 pri_adjust (EV_A_ (W)w);
… …
2789 3967
2790 EV_FREQUENT_CHECK; 3968 EV_FREQUENT_CHECK;
2791} 3969}
2792 3970
2793void 3971void
2794ev_idle_stop (EV_P_ ev_idle *w) 3972ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2795{ 3973{
2796 clear_pending (EV_A_ (W)w); 3974 clear_pending (EV_A_ (W)w);
2797 if (expect_false (!ev_is_active (w))) 3975 if (expect_false (!ev_is_active (w)))
2798 return; 3976 return;
2799 3977
… …
2811 3989
2812 EV_FREQUENT_CHECK; 3990 EV_FREQUENT_CHECK;
2813} 3991}
2814#endif 3992#endif
2815 3993
3994#if EV_PREPARE_ENABLE
2816void 3995void
2817ev_prepare_start (EV_P_ ev_prepare *w) 3996ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2818{ 3997{
2819 if (expect_false (ev_is_active (w))) 3998 if (expect_false (ev_is_active (w)))
2820 return; 3999 return;
2821 4000
2822 EV_FREQUENT_CHECK; 4001 EV_FREQUENT_CHECK;
… …
2827 4006
2828 EV_FREQUENT_CHECK; 4007 EV_FREQUENT_CHECK;
2829} 4008}
2830 4009
2831void 4010void
2832ev_prepare_stop (EV_P_ ev_prepare *w) 4011ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2833{ 4012{
2834 clear_pending (EV_A_ (W)w); 4013 clear_pending (EV_A_ (W)w);
2835 if (expect_false (!ev_is_active (w))) 4014 if (expect_false (!ev_is_active (w)))
2836 return; 4015 return;
2837 4016
… …
2846 4025
2847 ev_stop (EV_A_ (W)w); 4026 ev_stop (EV_A_ (W)w);
2848 4027
2849 EV_FREQUENT_CHECK; 4028 EV_FREQUENT_CHECK;
2850} 4029}
4030#endif
2851 4031
4032#if EV_CHECK_ENABLE
2852void 4033void
2853ev_check_start (EV_P_ ev_check *w) 4034ev_check_start (EV_P_ ev_check *w) EV_THROW
2854{ 4035{
2855 if (expect_false (ev_is_active (w))) 4036 if (expect_false (ev_is_active (w)))
2856 return; 4037 return;
2857 4038
2858 EV_FREQUENT_CHECK; 4039 EV_FREQUENT_CHECK;
… …
2863 4044
2864 EV_FREQUENT_CHECK; 4045 EV_FREQUENT_CHECK;
2865} 4046}
2866 4047
2867void 4048void
2868ev_check_stop (EV_P_ ev_check *w) 4049ev_check_stop (EV_P_ ev_check *w) EV_THROW
2869{ 4050{
2870 clear_pending (EV_A_ (W)w); 4051 clear_pending (EV_A_ (W)w);
2871 if (expect_false (!ev_is_active (w))) 4052 if (expect_false (!ev_is_active (w)))
2872 return; 4053 return;
2873 4054
… …
2882 4063
2883 ev_stop (EV_A_ (W)w); 4064 ev_stop (EV_A_ (W)w);
2884 4065
2885 EV_FREQUENT_CHECK; 4066 EV_FREQUENT_CHECK;
2886} 4067}
4068#endif
2887 4069
2888#if EV_EMBED_ENABLE 4070#if EV_EMBED_ENABLE
2889void noinline 4071void noinline
2890ev_embed_sweep (EV_P_ ev_embed *w) 4072ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2891{ 4073{
2892 ev_loop (w->other, EVLOOP_NONBLOCK); 4074 ev_run (w->other, EVRUN_NOWAIT);
2893} 4075}
2894 4076
2895static void 4077static void
2896embed_io_cb (EV_P_ ev_io *io, int revents) 4078embed_io_cb (EV_P_ ev_io *io, int revents)
2897{ 4079{
2898 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4080 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2899 4081
2900 if (ev_cb (w)) 4082 if (ev_cb (w))
2901 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4083 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2902 else 4084 else
2903 ev_loop (w->other, EVLOOP_NONBLOCK); 4085 ev_run (w->other, EVRUN_NOWAIT);
2904} 4086}
2905 4087
2906static void 4088static void
2907embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4089embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2908{ 4090{
2909 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4091 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2910 4092
2911 { 4093 {
2912 struct ev_loop *loop = w->other; 4094 EV_P = w->other;
2913 4095
2914 while (fdchangecnt) 4096 while (fdchangecnt)
2915 { 4097 {
2916 fd_reify (EV_A); 4098 fd_reify (EV_A);
2917 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4099 ev_run (EV_A_ EVRUN_NOWAIT);
2918 } 4100 }
2919 } 4101 }
2920} 4102}
2921 4103
2922static void 4104static void
… …
2925 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4107 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2926 4108
2927 ev_embed_stop (EV_A_ w); 4109 ev_embed_stop (EV_A_ w);
2928 4110
2929 { 4111 {
2930 struct ev_loop *loop = w->other; 4112 EV_P = w->other;
2931 4113
2932 ev_loop_fork (EV_A); 4114 ev_loop_fork (EV_A);
2933 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4115 ev_run (EV_A_ EVRUN_NOWAIT);
2934 } 4116 }
2935 4117
2936 ev_embed_start (EV_A_ w); 4118 ev_embed_start (EV_A_ w);
2937} 4119}
2938 4120
… …
2943 ev_idle_stop (EV_A_ idle); 4125 ev_idle_stop (EV_A_ idle);
2944} 4126}
2945#endif 4127#endif
2946 4128
2947void 4129void
2948ev_embed_start (EV_P_ ev_embed *w) 4130ev_embed_start (EV_P_ ev_embed *w) EV_THROW
2949{ 4131{
2950 if (expect_false (ev_is_active (w))) 4132 if (expect_false (ev_is_active (w)))
2951 return; 4133 return;
2952 4134
2953 { 4135 {
2954 struct ev_loop *loop = w->other; 4136 EV_P = w->other;
2955 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4137 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2956 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4138 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2957 } 4139 }
2958 4140
2959 EV_FREQUENT_CHECK; 4141 EV_FREQUENT_CHECK;
… …
2974 4156
2975 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
2976} 4158}
2977 4159
2978void 4160void
2979ev_embed_stop (EV_P_ ev_embed *w) 4161ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
2980{ 4162{
2981 clear_pending (EV_A_ (W)w); 4163 clear_pending (EV_A_ (W)w);
2982 if (expect_false (!ev_is_active (w))) 4164 if (expect_false (!ev_is_active (w)))
2983 return; 4165 return;
2984 4166
… …
2986 4168
2987 ev_io_stop (EV_A_ &w->io); 4169 ev_io_stop (EV_A_ &w->io);
2988 ev_prepare_stop (EV_A_ &w->prepare); 4170 ev_prepare_stop (EV_A_ &w->prepare);
2989 ev_fork_stop (EV_A_ &w->fork); 4171 ev_fork_stop (EV_A_ &w->fork);
2990 4172
4173 ev_stop (EV_A_ (W)w);
4174
2991 EV_FREQUENT_CHECK; 4175 EV_FREQUENT_CHECK;
2992} 4176}
2993#endif 4177#endif
2994 4178
2995#if EV_FORK_ENABLE 4179#if EV_FORK_ENABLE
2996void 4180void
2997ev_fork_start (EV_P_ ev_fork *w) 4181ev_fork_start (EV_P_ ev_fork *w) EV_THROW
2998{ 4182{
2999 if (expect_false (ev_is_active (w))) 4183 if (expect_false (ev_is_active (w)))
3000 return; 4184 return;
3001 4185
3002 EV_FREQUENT_CHECK; 4186 EV_FREQUENT_CHECK;
… …
3007 4191
3008 EV_FREQUENT_CHECK; 4192 EV_FREQUENT_CHECK;
3009} 4193}
3010 4194
3011void 4195void
3012ev_fork_stop (EV_P_ ev_fork *w) 4196ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3013{ 4197{
3014 clear_pending (EV_A_ (W)w); 4198 clear_pending (EV_A_ (W)w);
3015 if (expect_false (!ev_is_active (w))) 4199 if (expect_false (!ev_is_active (w)))
3016 return; 4200 return;
3017 4201
… …
3028 4212
3029 EV_FREQUENT_CHECK; 4213 EV_FREQUENT_CHECK;
3030} 4214}
3031#endif 4215#endif
3032 4216
4217#if EV_CLEANUP_ENABLE
4218void
4219ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4220{
4221 if (expect_false (ev_is_active (w)))
4222 return;
4223
4224 EV_FREQUENT_CHECK;
4225
4226 ev_start (EV_A_ (W)w, ++cleanupcnt);
4227 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4228 cleanups [cleanupcnt - 1] = w;
4229
4230 /* cleanup watchers should never keep a refcount on the loop */
4231 ev_unref (EV_A);
4232 EV_FREQUENT_CHECK;
4233}
4234
4235void
4236ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4237{
4238 clear_pending (EV_A_ (W)w);
4239 if (expect_false (!ev_is_active (w)))
4240 return;
4241
4242 EV_FREQUENT_CHECK;
4243 ev_ref (EV_A);
4244
4245 {
4246 int active = ev_active (w);
4247
4248 cleanups [active - 1] = cleanups [--cleanupcnt];
4249 ev_active (cleanups [active - 1]) = active;
4250 }
4251
4252 ev_stop (EV_A_ (W)w);
4253
4254 EV_FREQUENT_CHECK;
4255}
4256#endif
4257
3033#if EV_ASYNC_ENABLE 4258#if EV_ASYNC_ENABLE
3034void 4259void
3035ev_async_start (EV_P_ ev_async *w) 4260ev_async_start (EV_P_ ev_async *w) EV_THROW
3036{ 4261{
3037 if (expect_false (ev_is_active (w))) 4262 if (expect_false (ev_is_active (w)))
3038 return; 4263 return;
4264
4265 w->sent = 0;
3039 4266
3040 evpipe_init (EV_A); 4267 evpipe_init (EV_A);
3041 4268
3042 EV_FREQUENT_CHECK; 4269 EV_FREQUENT_CHECK;
3043 4270
… …
3047 4274
3048 EV_FREQUENT_CHECK; 4275 EV_FREQUENT_CHECK;
3049} 4276}
3050 4277
3051void 4278void
3052ev_async_stop (EV_P_ ev_async *w) 4279ev_async_stop (EV_P_ ev_async *w) EV_THROW
3053{ 4280{
3054 clear_pending (EV_A_ (W)w); 4281 clear_pending (EV_A_ (W)w);
3055 if (expect_false (!ev_is_active (w))) 4282 if (expect_false (!ev_is_active (w)))
3056 return; 4283 return;
3057 4284
… …
3068 4295
3069 EV_FREQUENT_CHECK; 4296 EV_FREQUENT_CHECK;
3070} 4297}
3071 4298
3072void 4299void
3073ev_async_send (EV_P_ ev_async *w) 4300ev_async_send (EV_P_ ev_async *w) EV_THROW
3074{ 4301{
3075 w->sent = 1; 4302 w->sent = 1;
3076 evpipe_write (EV_A_ &gotasync); 4303 evpipe_write (EV_A_ &async_pending);
3077} 4304}
3078#endif 4305#endif
3079 4306
3080/*****************************************************************************/ 4307/*****************************************************************************/
3081 4308
… …
3115 4342
3116 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4343 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3117} 4344}
3118 4345
3119void 4346void
3120ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4347ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3121{ 4348{
3122 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4349 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3123 4350
3124 if (expect_false (!once)) 4351 if (expect_false (!once))
3125 { 4352 {
3126 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4353 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3127 return; 4354 return;
3128 } 4355 }
3129 4356
3130 once->cb = cb; 4357 once->cb = cb;
3131 once->arg = arg; 4358 once->arg = arg;
… …
3145 } 4372 }
3146} 4373}
3147 4374
3148/*****************************************************************************/ 4375/*****************************************************************************/
3149 4376
3150#if 0 4377#if EV_WALK_ENABLE
3151void 4378void ecb_cold
3152ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4379ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3153{ 4380{
3154 int i, j; 4381 int i, j;
3155 ev_watcher_list *wl, *wn; 4382 ev_watcher_list *wl, *wn;
3156 4383
3157 if (types & (EV_IO | EV_EMBED)) 4384 if (types & (EV_IO | EV_EMBED))
… …
3171#if EV_USE_INOTIFY 4398#if EV_USE_INOTIFY
3172 if (ev_cb ((ev_io *)wl) == infy_cb) 4399 if (ev_cb ((ev_io *)wl) == infy_cb)
3173 ; 4400 ;
3174 else 4401 else
3175#endif 4402#endif
3176 if ((ev_io *)wl != &pipeev) 4403 if ((ev_io *)wl != &pipe_w)
3177 if (types & EV_IO) 4404 if (types & EV_IO)
3178 cb (EV_A_ EV_IO, wl); 4405 cb (EV_A_ EV_IO, wl);
3179 4406
3180 wl = wn; 4407 wl = wn;
3181 } 4408 }
… …
3200 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4427 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3201#endif 4428#endif
3202 4429
3203#if EV_IDLE_ENABLE 4430#if EV_IDLE_ENABLE
3204 if (types & EV_IDLE) 4431 if (types & EV_IDLE)
3205 for (j = NUMPRI; i--; ) 4432 for (j = NUMPRI; j--; )
3206 for (i = idlecnt [j]; i--; ) 4433 for (i = idlecnt [j]; i--; )
3207 cb (EV_A_ EV_IDLE, idles [j][i]); 4434 cb (EV_A_ EV_IDLE, idles [j][i]);
3208#endif 4435#endif
3209 4436
3210#if EV_FORK_ENABLE 4437#if EV_FORK_ENABLE
… …
3218 if (types & EV_ASYNC) 4445 if (types & EV_ASYNC)
3219 for (i = asynccnt; i--; ) 4446 for (i = asynccnt; i--; )
3220 cb (EV_A_ EV_ASYNC, asyncs [i]); 4447 cb (EV_A_ EV_ASYNC, asyncs [i]);
3221#endif 4448#endif
3222 4449
4450#if EV_PREPARE_ENABLE
3223 if (types & EV_PREPARE) 4451 if (types & EV_PREPARE)
3224 for (i = preparecnt; i--; ) 4452 for (i = preparecnt; i--; )
3225#if EV_EMBED_ENABLE 4453# if EV_EMBED_ENABLE
3226 if (ev_cb (prepares [i]) != embed_prepare_cb) 4454 if (ev_cb (prepares [i]) != embed_prepare_cb)
3227#endif 4455# endif
3228 cb (EV_A_ EV_PREPARE, prepares [i]); 4456 cb (EV_A_ EV_PREPARE, prepares [i]);
4457#endif
3229 4458
4459#if EV_CHECK_ENABLE
3230 if (types & EV_CHECK) 4460 if (types & EV_CHECK)
3231 for (i = checkcnt; i--; ) 4461 for (i = checkcnt; i--; )
3232 cb (EV_A_ EV_CHECK, checks [i]); 4462 cb (EV_A_ EV_CHECK, checks [i]);
4463#endif
3233 4464
4465#if EV_SIGNAL_ENABLE
3234 if (types & EV_SIGNAL) 4466 if (types & EV_SIGNAL)
3235 for (i = 0; i < signalmax; ++i) 4467 for (i = 0; i < EV_NSIG - 1; ++i)
3236 for (wl = signals [i].head; wl; ) 4468 for (wl = signals [i].head; wl; )
3237 { 4469 {
3238 wn = wl->next; 4470 wn = wl->next;
3239 cb (EV_A_ EV_SIGNAL, wl); 4471 cb (EV_A_ EV_SIGNAL, wl);
3240 wl = wn; 4472 wl = wn;
3241 } 4473 }
4474#endif
3242 4475
4476#if EV_CHILD_ENABLE
3243 if (types & EV_CHILD) 4477 if (types & EV_CHILD)
3244 for (i = EV_PID_HASHSIZE; i--; ) 4478 for (i = (EV_PID_HASHSIZE); i--; )
3245 for (wl = childs [i]; wl; ) 4479 for (wl = childs [i]; wl; )
3246 { 4480 {
3247 wn = wl->next; 4481 wn = wl->next;
3248 cb (EV_A_ EV_CHILD, wl); 4482 cb (EV_A_ EV_CHILD, wl);
3249 wl = wn; 4483 wl = wn;
3250 } 4484 }
4485#endif
3251/* EV_STAT 0x00001000 /* stat data changed */ 4486/* EV_STAT 0x00001000 /* stat data changed */
3252/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4487/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3253} 4488}
3254#endif 4489#endif
3255 4490
3256#if EV_MULTIPLICITY 4491#if EV_MULTIPLICITY
3257 #include "ev_wrap.h" 4492 #include "ev_wrap.h"
3258#endif 4493#endif
3259 4494
3260#ifdef __cplusplus
3261}
3262#endif
3263

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