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Comparing libev/ev.c (file contents):
Revision 1.280 by root, Sat Mar 14 04:45:39 2009 UTC vs.
Revision 1.426 by root, Sun May 6 13:42:10 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, j;
1596 WL w; 2560 WL w, w2;
1597 2561
1598 assert (activecnt >= -1); 2562 assert (activecnt >= -1);
1599 2563
1600 assert (fdchangemax >= fdchangecnt); 2564 assert (fdchangemax >= fdchangecnt);
1601 for (i = 0; i < fdchangecnt; ++i) 2565 for (i = 0; i < fdchangecnt; ++i)
1602 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2566 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1603 2567
1604 assert (anfdmax >= 0); 2568 assert (anfdmax >= 0);
1605 for (i = 0; i < anfdmax; ++i) 2569 for (i = j = 0; i < anfdmax; ++i)
1606 for (w = anfds [i].head; w; w = w->next) 2570 for (w = w2 = anfds [i].head; w; w = w->next)
1607 { 2571 {
1608 verify_watcher (EV_A_ (W)w); 2572 verify_watcher (EV_A_ (W)w);
2573
2574 if (++j & 1)
2575 w2 = w2->next;
2576
2577 assert (("libev: io watcher list contains a loop", w != w2));
1609 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2578 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1610 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2579 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1611 } 2580 }
1612 2581
1613 assert (timermax >= timercnt); 2582 assert (timermax >= timercnt);
… …
1631#if EV_FORK_ENABLE 2600#if EV_FORK_ENABLE
1632 assert (forkmax >= forkcnt); 2601 assert (forkmax >= forkcnt);
1633 array_verify (EV_A_ (W *)forks, forkcnt); 2602 array_verify (EV_A_ (W *)forks, forkcnt);
1634#endif 2603#endif
1635 2604
2605#if EV_CLEANUP_ENABLE
2606 assert (cleanupmax >= cleanupcnt);
2607 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2608#endif
2609
1636#if EV_ASYNC_ENABLE 2610#if EV_ASYNC_ENABLE
1637 assert (asyncmax >= asynccnt); 2611 assert (asyncmax >= asynccnt);
1638 array_verify (EV_A_ (W *)asyncs, asynccnt); 2612 array_verify (EV_A_ (W *)asyncs, asynccnt);
1639#endif 2613#endif
1640 2614
2615#if EV_PREPARE_ENABLE
1641 assert (preparemax >= preparecnt); 2616 assert (preparemax >= preparecnt);
1642 array_verify (EV_A_ (W *)prepares, preparecnt); 2617 array_verify (EV_A_ (W *)prepares, preparecnt);
2618#endif
1643 2619
2620#if EV_CHECK_ENABLE
1644 assert (checkmax >= checkcnt); 2621 assert (checkmax >= checkcnt);
1645 array_verify (EV_A_ (W *)checks, checkcnt); 2622 array_verify (EV_A_ (W *)checks, checkcnt);
2623#endif
1646 2624
1647# if 0 2625# if 0
2626#if EV_CHILD_ENABLE
1648 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2627 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) 2628 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2629#endif
1650# endif 2630# endif
1651#endif 2631#endif
1652} 2632}
1653 2633#endif
1654#endif /* multiplicity */
1655 2634
1656#if EV_MULTIPLICITY 2635#if EV_MULTIPLICITY
1657struct ev_loop * 2636struct ev_loop * ecb_cold
1658ev_default_loop_init (unsigned int flags)
1659#else 2637#else
1660int 2638int
2639#endif
1661ev_default_loop (unsigned int flags) 2640ev_default_loop (unsigned int flags) EV_THROW
1662#endif
1663{ 2641{
1664 if (!ev_default_loop_ptr) 2642 if (!ev_default_loop_ptr)
1665 { 2643 {
1666#if EV_MULTIPLICITY 2644#if EV_MULTIPLICITY
1667 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2645 EV_P = ev_default_loop_ptr = &default_loop_struct;
1668#else 2646#else
1669 ev_default_loop_ptr = 1; 2647 ev_default_loop_ptr = 1;
1670#endif 2648#endif
1671 2649
1672 loop_init (EV_A_ flags); 2650 loop_init (EV_A_ flags);
1673 2651
1674 if (ev_backend (EV_A)) 2652 if (ev_backend (EV_A))
1675 { 2653 {
1676#ifndef _WIN32 2654#if EV_CHILD_ENABLE
1677 ev_signal_init (&childev, childcb, SIGCHLD); 2655 ev_signal_init (&childev, childcb, SIGCHLD);
1678 ev_set_priority (&childev, EV_MAXPRI); 2656 ev_set_priority (&childev, EV_MAXPRI);
1679 ev_signal_start (EV_A_ &childev); 2657 ev_signal_start (EV_A_ &childev);
1680 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2658 ev_unref (EV_A); /* child watcher should not keep loop alive */
1681#endif 2659#endif
… …
1686 2664
1687 return ev_default_loop_ptr; 2665 return ev_default_loop_ptr;
1688} 2666}
1689 2667
1690void 2668void
1691ev_default_destroy (void) 2669ev_loop_fork (EV_P) EV_THROW
1692{ 2670{
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 */ 2671 postfork = 1; /* must be in line with ev_default_fork */
1715} 2672}
1716 2673
1717/*****************************************************************************/ 2674/*****************************************************************************/
1718 2675
1719void 2676void
1720ev_invoke (EV_P_ void *w, int revents) 2677ev_invoke (EV_P_ void *w, int revents)
1721{ 2678{
1722 EV_CB_INVOKE ((W)w, revents); 2679 EV_CB_INVOKE ((W)w, revents);
1723} 2680}
1724 2681
1725void inline_speed 2682unsigned int
1726call_pending (EV_P) 2683ev_pending_count (EV_P) EV_THROW
1727{ 2684{
1728 int pri; 2685 int pri;
2686 unsigned int count = 0;
1729 2687
1730 for (pri = NUMPRI; pri--; ) 2688 for (pri = NUMPRI; pri--; )
2689 count += pendingcnt [pri];
2690
2691 return count;
2692}
2693
2694void noinline
2695ev_invoke_pending (EV_P)
2696{
2697 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
1731 while (pendingcnt [pri]) 2698 while (pendingcnt [pendingpri])
1732 { 2699 {
1733 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2700 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1734 2701
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; 2702 p->w->pending = 0;
1740 EV_CB_INVOKE (p->w, p->events); 2703 EV_CB_INVOKE (p->w, p->events);
1741 EV_FREQUENT_CHECK; 2704 EV_FREQUENT_CHECK;
1742 }
1743 } 2705 }
1744} 2706}
1745 2707
1746#if EV_IDLE_ENABLE 2708#if EV_IDLE_ENABLE
1747void inline_size 2709/* make idle watchers pending. this handles the "call-idle */
2710/* only when higher priorities are idle" logic */
2711inline_size void
1748idle_reify (EV_P) 2712idle_reify (EV_P)
1749{ 2713{
1750 if (expect_false (idleall)) 2714 if (expect_false (idleall))
1751 { 2715 {
1752 int pri; 2716 int pri;
… …
1764 } 2728 }
1765 } 2729 }
1766} 2730}
1767#endif 2731#endif
1768 2732
1769void inline_size 2733/* make timers pending */
2734inline_size void
1770timers_reify (EV_P) 2735timers_reify (EV_P)
1771{ 2736{
1772 EV_FREQUENT_CHECK; 2737 EV_FREQUENT_CHECK;
1773 2738
1774 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2739 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1775 { 2740 {
1776 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2741 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 { 2742 {
2743 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2744
2745 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2746
2747 /* first reschedule or stop timer */
2748 if (w->repeat)
2749 {
1783 ev_at (w) += w->repeat; 2750 ev_at (w) += w->repeat;
1784 if (ev_at (w) < mn_now) 2751 if (ev_at (w) < mn_now)
1785 ev_at (w) = mn_now; 2752 ev_at (w) = mn_now;
1786 2753
1787 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2754 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1788 2755
1789 ANHE_at_cache (timers [HEAP0]); 2756 ANHE_at_cache (timers [HEAP0]);
1790 downheap (timers, timercnt, HEAP0); 2757 downheap (timers, timercnt, HEAP0);
2758 }
2759 else
2760 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2761
2762 EV_FREQUENT_CHECK;
2763 feed_reverse (EV_A_ (W)w);
1791 } 2764 }
1792 else 2765 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1793 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1794 2766
1795 EV_FREQUENT_CHECK; 2767 feed_reverse_done (EV_A_ EV_TIMER);
1796 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1797 } 2768 }
1798} 2769}
1799 2770
1800#if EV_PERIODIC_ENABLE 2771#if EV_PERIODIC_ENABLE
1801void inline_size 2772
2773static void noinline
2774periodic_recalc (EV_P_ ev_periodic *w)
2775{
2776 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2777 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2778
2779 /* the above almost always errs on the low side */
2780 while (at <= ev_rt_now)
2781 {
2782 ev_tstamp nat = at + w->interval;
2783
2784 /* when resolution fails us, we use ev_rt_now */
2785 if (expect_false (nat == at))
2786 {
2787 at = ev_rt_now;
2788 break;
2789 }
2790
2791 at = nat;
2792 }
2793
2794 ev_at (w) = at;
2795}
2796
2797/* make periodics pending */
2798inline_size void
1802periodics_reify (EV_P) 2799periodics_reify (EV_P)
1803{ 2800{
1804 EV_FREQUENT_CHECK; 2801 EV_FREQUENT_CHECK;
1805 2802
1806 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2803 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1807 { 2804 {
1808 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2805 int feed_count = 0;
1809 2806
1810 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2807 do
1811
1812 /* first reschedule or stop timer */
1813 if (w->reschedule_cb)
1814 { 2808 {
2809 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2810
2811 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2812
2813 /* first reschedule or stop timer */
2814 if (w->reschedule_cb)
2815 {
1815 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2816 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1816 2817
1817 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2818 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1818 2819
1819 ANHE_at_cache (periodics [HEAP0]); 2820 ANHE_at_cache (periodics [HEAP0]);
1820 downheap (periodics, periodiccnt, HEAP0); 2821 downheap (periodics, periodiccnt, HEAP0);
2822 }
2823 else if (w->interval)
2824 {
2825 periodic_recalc (EV_A_ w);
2826 ANHE_at_cache (periodics [HEAP0]);
2827 downheap (periodics, periodiccnt, HEAP0);
2828 }
2829 else
2830 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2831
2832 EV_FREQUENT_CHECK;
2833 feed_reverse (EV_A_ (W)w);
1821 } 2834 }
1822 else if (w->interval) 2835 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 2836
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); 2837 feed_reverse_done (EV_A_ EV_PERIODIC);
1846 } 2838 }
1847} 2839}
1848 2840
2841/* simply recalculate all periodics */
2842/* TODO: maybe ensure that at least one event happens when jumping forward? */
1849static void noinline 2843static void noinline ecb_cold
1850periodics_reschedule (EV_P) 2844periodics_reschedule (EV_P)
1851{ 2845{
1852 int i; 2846 int i;
1853 2847
1854 /* adjust periodics after time jump */ 2848 /* adjust periodics after time jump */
… …
1857 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2851 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1858 2852
1859 if (w->reschedule_cb) 2853 if (w->reschedule_cb)
1860 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2854 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1861 else if (w->interval) 2855 else if (w->interval)
1862 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2856 periodic_recalc (EV_A_ w);
1863 2857
1864 ANHE_at_cache (periodics [i]); 2858 ANHE_at_cache (periodics [i]);
1865 } 2859 }
1866 2860
1867 reheap (periodics, periodiccnt); 2861 reheap (periodics, periodiccnt);
1868} 2862}
1869#endif 2863#endif
1870 2864
1871void inline_speed 2865/* adjust all timers by a given offset */
2866static void noinline ecb_cold
2867timers_reschedule (EV_P_ ev_tstamp adjust)
2868{
2869 int i;
2870
2871 for (i = 0; i < timercnt; ++i)
2872 {
2873 ANHE *he = timers + i + HEAP0;
2874 ANHE_w (*he)->at += adjust;
2875 ANHE_at_cache (*he);
2876 }
2877}
2878
2879/* fetch new monotonic and realtime times from the kernel */
2880/* also detect if there was a timejump, and act accordingly */
2881inline_speed void
1872time_update (EV_P_ ev_tstamp max_block) 2882time_update (EV_P_ ev_tstamp max_block)
1873{ 2883{
1874 int i;
1875
1876#if EV_USE_MONOTONIC 2884#if EV_USE_MONOTONIC
1877 if (expect_true (have_monotonic)) 2885 if (expect_true (have_monotonic))
1878 { 2886 {
2887 int i;
1879 ev_tstamp odiff = rtmn_diff; 2888 ev_tstamp odiff = rtmn_diff;
1880 2889
1881 mn_now = get_clock (); 2890 mn_now = get_clock ();
1882 2891
1883 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2892 /* 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 2908 * doesn't hurt either as we only do this on time-jumps or
1900 * in the unlikely event of having been preempted here. 2909 * in the unlikely event of having been preempted here.
1901 */ 2910 */
1902 for (i = 4; --i; ) 2911 for (i = 4; --i; )
1903 { 2912 {
2913 ev_tstamp diff;
1904 rtmn_diff = ev_rt_now - mn_now; 2914 rtmn_diff = ev_rt_now - mn_now;
1905 2915
2916 diff = odiff - rtmn_diff;
2917
1906 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2918 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1907 return; /* all is well */ 2919 return; /* all is well */
1908 2920
1909 ev_rt_now = ev_time (); 2921 ev_rt_now = ev_time ();
1910 mn_now = get_clock (); 2922 mn_now = get_clock ();
1911 now_floor = mn_now; 2923 now_floor = mn_now;
1912 } 2924 }
1913 2925
2926 /* no timer adjustment, as the monotonic clock doesn't jump */
2927 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1914# if EV_PERIODIC_ENABLE 2928# if EV_PERIODIC_ENABLE
1915 periodics_reschedule (EV_A); 2929 periodics_reschedule (EV_A);
1916# endif 2930# endif
1917 /* no timer adjustment, as the monotonic clock doesn't jump */
1918 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1919 } 2931 }
1920 else 2932 else
1921#endif 2933#endif
1922 { 2934 {
1923 ev_rt_now = ev_time (); 2935 ev_rt_now = ev_time ();
1924 2936
1925 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2937 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1926 { 2938 {
2939 /* adjust timers. this is easy, as the offset is the same for all of them */
2940 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1927#if EV_PERIODIC_ENABLE 2941#if EV_PERIODIC_ENABLE
1928 periodics_reschedule (EV_A); 2942 periodics_reschedule (EV_A);
1929#endif 2943#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 } 2944 }
1938 2945
1939 mn_now = ev_rt_now; 2946 mn_now = ev_rt_now;
1940 } 2947 }
1941} 2948}
1942 2949
1943void 2950int
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) 2951ev_run (EV_P_ int flags)
1965{ 2952{
2953#if EV_FEATURE_API
2954 ++loop_depth;
2955#endif
2956
2957 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2958
1966 loop_done = EVUNLOOP_CANCEL; 2959 loop_done = EVBREAK_CANCEL;
1967 2960
1968 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2961 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1969 2962
1970 do 2963 do
1971 { 2964 {
1972#if EV_VERIFY >= 2 2965#if EV_VERIFY >= 2
1973 ev_loop_verify (EV_A); 2966 ev_verify (EV_A);
1974#endif 2967#endif
1975 2968
1976#ifndef _WIN32 2969#ifndef _WIN32
1977 if (expect_false (curpid)) /* penalise the forking check even more */ 2970 if (expect_false (curpid)) /* penalise the forking check even more */
1978 if (expect_false (getpid () != curpid)) 2971 if (expect_false (getpid () != curpid))
… …
1986 /* we might have forked, so queue fork handlers */ 2979 /* we might have forked, so queue fork handlers */
1987 if (expect_false (postfork)) 2980 if (expect_false (postfork))
1988 if (forkcnt) 2981 if (forkcnt)
1989 { 2982 {
1990 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2983 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1991 call_pending (EV_A); 2984 EV_INVOKE_PENDING;
1992 } 2985 }
1993#endif 2986#endif
1994 2987
2988#if EV_PREPARE_ENABLE
1995 /* queue prepare watchers (and execute them) */ 2989 /* queue prepare watchers (and execute them) */
1996 if (expect_false (preparecnt)) 2990 if (expect_false (preparecnt))
1997 { 2991 {
1998 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2992 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1999 call_pending (EV_A); 2993 EV_INVOKE_PENDING;
2000 } 2994 }
2995#endif
2001 2996
2002 if (expect_false (!activecnt)) 2997 if (expect_false (loop_done))
2003 break; 2998 break;
2004 2999
2005 /* we might have forked, so reify kernel state if necessary */ 3000 /* we might have forked, so reify kernel state if necessary */
2006 if (expect_false (postfork)) 3001 if (expect_false (postfork))
2007 loop_fork (EV_A); 3002 loop_fork (EV_A);
… …
2012 /* calculate blocking time */ 3007 /* calculate blocking time */
2013 { 3008 {
2014 ev_tstamp waittime = 0.; 3009 ev_tstamp waittime = 0.;
2015 ev_tstamp sleeptime = 0.; 3010 ev_tstamp sleeptime = 0.;
2016 3011
3012 /* remember old timestamp for io_blocktime calculation */
3013 ev_tstamp prev_mn_now = mn_now;
3014
3015 /* update time to cancel out callback processing overhead */
3016 time_update (EV_A_ 1e100);
3017
3018 /* from now on, we want a pipe-wake-up */
3019 pipe_write_wanted = 1;
3020
3021 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3022
2017 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3023 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2018 { 3024 {
2019 /* update time to cancel out callback processing overhead */
2020 time_update (EV_A_ 1e100);
2021
2022 waittime = MAX_BLOCKTIME; 3025 waittime = MAX_BLOCKTIME;
2023 3026
2024 if (timercnt) 3027 if (timercnt)
2025 { 3028 {
2026 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3029 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2027 if (waittime > to) waittime = to; 3030 if (waittime > to) waittime = to;
2028 } 3031 }
2029 3032
2030#if EV_PERIODIC_ENABLE 3033#if EV_PERIODIC_ENABLE
2031 if (periodiccnt) 3034 if (periodiccnt)
2032 { 3035 {
2033 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3036 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2034 if (waittime > to) waittime = to; 3037 if (waittime > to) waittime = to;
2035 } 3038 }
2036#endif 3039#endif
2037 3040
3041 /* don't let timeouts decrease the waittime below timeout_blocktime */
2038 if (expect_false (waittime < timeout_blocktime)) 3042 if (expect_false (waittime < timeout_blocktime))
2039 waittime = timeout_blocktime; 3043 waittime = timeout_blocktime;
2040 3044
2041 sleeptime = waittime - backend_fudge; 3045 /* at this point, we NEED to wait, so we have to ensure */
3046 /* to pass a minimum nonzero value to the backend */
3047 if (expect_false (waittime < backend_mintime))
3048 waittime = backend_mintime;
2042 3049
3050 /* extra check because io_blocktime is commonly 0 */
2043 if (expect_true (sleeptime > io_blocktime)) 3051 if (expect_false (io_blocktime))
2044 sleeptime = io_blocktime;
2045
2046 if (sleeptime)
2047 { 3052 {
3053 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3054
3055 if (sleeptime > waittime - backend_mintime)
3056 sleeptime = waittime - backend_mintime;
3057
3058 if (expect_true (sleeptime > 0.))
3059 {
2048 ev_sleep (sleeptime); 3060 ev_sleep (sleeptime);
2049 waittime -= sleeptime; 3061 waittime -= sleeptime;
3062 }
2050 } 3063 }
2051 } 3064 }
2052 3065
3066#if EV_FEATURE_API
2053 ++loop_count; 3067 ++loop_count;
3068#endif
3069 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2054 backend_poll (EV_A_ waittime); 3070 backend_poll (EV_A_ waittime);
3071 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3072
3073 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3074
3075 if (pipe_write_skipped)
3076 {
3077 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3078 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3079 }
3080
2055 3081
2056 /* update ev_rt_now, do magic */ 3082 /* update ev_rt_now, do magic */
2057 time_update (EV_A_ waittime + sleeptime); 3083 time_update (EV_A_ waittime + sleeptime);
2058 } 3084 }
2059 3085
… …
2066#if EV_IDLE_ENABLE 3092#if EV_IDLE_ENABLE
2067 /* queue idle watchers unless other events are pending */ 3093 /* queue idle watchers unless other events are pending */
2068 idle_reify (EV_A); 3094 idle_reify (EV_A);
2069#endif 3095#endif
2070 3096
3097#if EV_CHECK_ENABLE
2071 /* queue check watchers, to be executed first */ 3098 /* queue check watchers, to be executed first */
2072 if (expect_false (checkcnt)) 3099 if (expect_false (checkcnt))
2073 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3100 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3101#endif
2074 3102
2075 call_pending (EV_A); 3103 EV_INVOKE_PENDING;
2076 } 3104 }
2077 while (expect_true ( 3105 while (expect_true (
2078 activecnt 3106 activecnt
2079 && !loop_done 3107 && !loop_done
2080 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3108 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2081 )); 3109 ));
2082 3110
2083 if (loop_done == EVUNLOOP_ONE) 3111 if (loop_done == EVBREAK_ONE)
2084 loop_done = EVUNLOOP_CANCEL; 3112 loop_done = EVBREAK_CANCEL;
3113
3114#if EV_FEATURE_API
3115 --loop_depth;
3116#endif
3117
3118 return activecnt;
2085} 3119}
2086 3120
2087void 3121void
2088ev_unloop (EV_P_ int how) 3122ev_break (EV_P_ int how) EV_THROW
2089{ 3123{
2090 loop_done = how; 3124 loop_done = how;
2091} 3125}
2092 3126
3127void
3128ev_ref (EV_P) EV_THROW
3129{
3130 ++activecnt;
3131}
3132
3133void
3134ev_unref (EV_P) EV_THROW
3135{
3136 --activecnt;
3137}
3138
3139void
3140ev_now_update (EV_P) EV_THROW
3141{
3142 time_update (EV_A_ 1e100);
3143}
3144
3145void
3146ev_suspend (EV_P) EV_THROW
3147{
3148 ev_now_update (EV_A);
3149}
3150
3151void
3152ev_resume (EV_P) EV_THROW
3153{
3154 ev_tstamp mn_prev = mn_now;
3155
3156 ev_now_update (EV_A);
3157 timers_reschedule (EV_A_ mn_now - mn_prev);
3158#if EV_PERIODIC_ENABLE
3159 /* TODO: really do this? */
3160 periodics_reschedule (EV_A);
3161#endif
3162}
3163
2093/*****************************************************************************/ 3164/*****************************************************************************/
3165/* singly-linked list management, used when the expected list length is short */
2094 3166
2095void inline_size 3167inline_size void
2096wlist_add (WL *head, WL elem) 3168wlist_add (WL *head, WL elem)
2097{ 3169{
2098 elem->next = *head; 3170 elem->next = *head;
2099 *head = elem; 3171 *head = elem;
2100} 3172}
2101 3173
2102void inline_size 3174inline_size void
2103wlist_del (WL *head, WL elem) 3175wlist_del (WL *head, WL elem)
2104{ 3176{
2105 while (*head) 3177 while (*head)
2106 { 3178 {
2107 if (*head == elem) 3179 if (expect_true (*head == elem))
2108 { 3180 {
2109 *head = elem->next; 3181 *head = elem->next;
2110 return; 3182 break;
2111 } 3183 }
2112 3184
2113 head = &(*head)->next; 3185 head = &(*head)->next;
2114 } 3186 }
2115} 3187}
2116 3188
2117void inline_speed 3189/* internal, faster, version of ev_clear_pending */
3190inline_speed void
2118clear_pending (EV_P_ W w) 3191clear_pending (EV_P_ W w)
2119{ 3192{
2120 if (w->pending) 3193 if (w->pending)
2121 { 3194 {
2122 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3195 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2123 w->pending = 0; 3196 w->pending = 0;
2124 } 3197 }
2125} 3198}
2126 3199
2127int 3200int
2128ev_clear_pending (EV_P_ void *w) 3201ev_clear_pending (EV_P_ void *w) EV_THROW
2129{ 3202{
2130 W w_ = (W)w; 3203 W w_ = (W)w;
2131 int pending = w_->pending; 3204 int pending = w_->pending;
2132 3205
2133 if (expect_true (pending)) 3206 if (expect_true (pending))
2134 { 3207 {
2135 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3208 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3209 p->w = (W)&pending_w;
2136 w_->pending = 0; 3210 w_->pending = 0;
2137 p->w = 0;
2138 return p->events; 3211 return p->events;
2139 } 3212 }
2140 else 3213 else
2141 return 0; 3214 return 0;
2142} 3215}
2143 3216
2144void inline_size 3217inline_size void
2145pri_adjust (EV_P_ W w) 3218pri_adjust (EV_P_ W w)
2146{ 3219{
2147 int pri = w->priority; 3220 int pri = ev_priority (w);
2148 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3221 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2149 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3222 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2150 w->priority = pri; 3223 ev_set_priority (w, pri);
2151} 3224}
2152 3225
2153void inline_speed 3226inline_speed void
2154ev_start (EV_P_ W w, int active) 3227ev_start (EV_P_ W w, int active)
2155{ 3228{
2156 pri_adjust (EV_A_ w); 3229 pri_adjust (EV_A_ w);
2157 w->active = active; 3230 w->active = active;
2158 ev_ref (EV_A); 3231 ev_ref (EV_A);
2159} 3232}
2160 3233
2161void inline_size 3234inline_size void
2162ev_stop (EV_P_ W w) 3235ev_stop (EV_P_ W w)
2163{ 3236{
2164 ev_unref (EV_A); 3237 ev_unref (EV_A);
2165 w->active = 0; 3238 w->active = 0;
2166} 3239}
2167 3240
2168/*****************************************************************************/ 3241/*****************************************************************************/
2169 3242
2170void noinline 3243void noinline
2171ev_io_start (EV_P_ ev_io *w) 3244ev_io_start (EV_P_ ev_io *w) EV_THROW
2172{ 3245{
2173 int fd = w->fd; 3246 int fd = w->fd;
2174 3247
2175 if (expect_false (ev_is_active (w))) 3248 if (expect_false (ev_is_active (w)))
2176 return; 3249 return;
2177 3250
2178 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3251 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2179 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); 3252 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2180 3253
2181 EV_FREQUENT_CHECK; 3254 EV_FREQUENT_CHECK;
2182 3255
2183 ev_start (EV_A_ (W)w, 1); 3256 ev_start (EV_A_ (W)w, 1);
2184 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3257 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2185 wlist_add (&anfds[fd].head, (WL)w); 3258 wlist_add (&anfds[fd].head, (WL)w);
2186 3259
3260 /* common bug, apparently */
3261 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3262
2187 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 3263 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2188 w->events &= ~EV_IOFDSET; 3264 w->events &= ~EV__IOFDSET;
2189 3265
2190 EV_FREQUENT_CHECK; 3266 EV_FREQUENT_CHECK;
2191} 3267}
2192 3268
2193void noinline 3269void noinline
2194ev_io_stop (EV_P_ ev_io *w) 3270ev_io_stop (EV_P_ ev_io *w) EV_THROW
2195{ 3271{
2196 clear_pending (EV_A_ (W)w); 3272 clear_pending (EV_A_ (W)w);
2197 if (expect_false (!ev_is_active (w))) 3273 if (expect_false (!ev_is_active (w)))
2198 return; 3274 return;
2199 3275
… …
2202 EV_FREQUENT_CHECK; 3278 EV_FREQUENT_CHECK;
2203 3279
2204 wlist_del (&anfds[w->fd].head, (WL)w); 3280 wlist_del (&anfds[w->fd].head, (WL)w);
2205 ev_stop (EV_A_ (W)w); 3281 ev_stop (EV_A_ (W)w);
2206 3282
2207 fd_change (EV_A_ w->fd, 1); 3283 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2208 3284
2209 EV_FREQUENT_CHECK; 3285 EV_FREQUENT_CHECK;
2210} 3286}
2211 3287
2212void noinline 3288void noinline
2213ev_timer_start (EV_P_ ev_timer *w) 3289ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2214{ 3290{
2215 if (expect_false (ev_is_active (w))) 3291 if (expect_false (ev_is_active (w)))
2216 return; 3292 return;
2217 3293
2218 ev_at (w) += mn_now; 3294 ev_at (w) += mn_now;
… …
2232 3308
2233 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3309 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2234} 3310}
2235 3311
2236void noinline 3312void noinline
2237ev_timer_stop (EV_P_ ev_timer *w) 3313ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2238{ 3314{
2239 clear_pending (EV_A_ (W)w); 3315 clear_pending (EV_A_ (W)w);
2240 if (expect_false (!ev_is_active (w))) 3316 if (expect_false (!ev_is_active (w)))
2241 return; 3317 return;
2242 3318
… …
2254 timers [active] = timers [timercnt + HEAP0]; 3330 timers [active] = timers [timercnt + HEAP0];
2255 adjustheap (timers, timercnt, active); 3331 adjustheap (timers, timercnt, active);
2256 } 3332 }
2257 } 3333 }
2258 3334
2259 EV_FREQUENT_CHECK;
2260
2261 ev_at (w) -= mn_now; 3335 ev_at (w) -= mn_now;
2262 3336
2263 ev_stop (EV_A_ (W)w); 3337 ev_stop (EV_A_ (W)w);
3338
3339 EV_FREQUENT_CHECK;
2264} 3340}
2265 3341
2266void noinline 3342void noinline
2267ev_timer_again (EV_P_ ev_timer *w) 3343ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2268{ 3344{
2269 EV_FREQUENT_CHECK; 3345 EV_FREQUENT_CHECK;
3346
3347 clear_pending (EV_A_ (W)w);
2270 3348
2271 if (ev_is_active (w)) 3349 if (ev_is_active (w))
2272 { 3350 {
2273 if (w->repeat) 3351 if (w->repeat)
2274 { 3352 {
… …
2286 } 3364 }
2287 3365
2288 EV_FREQUENT_CHECK; 3366 EV_FREQUENT_CHECK;
2289} 3367}
2290 3368
3369ev_tstamp
3370ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3371{
3372 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3373}
3374
2291#if EV_PERIODIC_ENABLE 3375#if EV_PERIODIC_ENABLE
2292void noinline 3376void noinline
2293ev_periodic_start (EV_P_ ev_periodic *w) 3377ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2294{ 3378{
2295 if (expect_false (ev_is_active (w))) 3379 if (expect_false (ev_is_active (w)))
2296 return; 3380 return;
2297 3381
2298 if (w->reschedule_cb) 3382 if (w->reschedule_cb)
2299 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3383 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2300 else if (w->interval) 3384 else if (w->interval)
2301 { 3385 {
2302 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3386 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2303 /* this formula differs from the one in periodic_reify because we do not always round up */ 3387 periodic_recalc (EV_A_ w);
2304 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2305 } 3388 }
2306 else 3389 else
2307 ev_at (w) = w->offset; 3390 ev_at (w) = w->offset;
2308 3391
2309 EV_FREQUENT_CHECK; 3392 EV_FREQUENT_CHECK;
… …
2319 3402
2320 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3403 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2321} 3404}
2322 3405
2323void noinline 3406void noinline
2324ev_periodic_stop (EV_P_ ev_periodic *w) 3407ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2325{ 3408{
2326 clear_pending (EV_A_ (W)w); 3409 clear_pending (EV_A_ (W)w);
2327 if (expect_false (!ev_is_active (w))) 3410 if (expect_false (!ev_is_active (w)))
2328 return; 3411 return;
2329 3412
… …
2341 periodics [active] = periodics [periodiccnt + HEAP0]; 3424 periodics [active] = periodics [periodiccnt + HEAP0];
2342 adjustheap (periodics, periodiccnt, active); 3425 adjustheap (periodics, periodiccnt, active);
2343 } 3426 }
2344 } 3427 }
2345 3428
2346 EV_FREQUENT_CHECK;
2347
2348 ev_stop (EV_A_ (W)w); 3429 ev_stop (EV_A_ (W)w);
3430
3431 EV_FREQUENT_CHECK;
2349} 3432}
2350 3433
2351void noinline 3434void noinline
2352ev_periodic_again (EV_P_ ev_periodic *w) 3435ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2353{ 3436{
2354 /* TODO: use adjustheap and recalculation */ 3437 /* TODO: use adjustheap and recalculation */
2355 ev_periodic_stop (EV_A_ w); 3438 ev_periodic_stop (EV_A_ w);
2356 ev_periodic_start (EV_A_ w); 3439 ev_periodic_start (EV_A_ w);
2357} 3440}
… …
2359 3442
2360#ifndef SA_RESTART 3443#ifndef SA_RESTART
2361# define SA_RESTART 0 3444# define SA_RESTART 0
2362#endif 3445#endif
2363 3446
3447#if EV_SIGNAL_ENABLE
3448
2364void noinline 3449void noinline
2365ev_signal_start (EV_P_ ev_signal *w) 3450ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2366{ 3451{
2367#if EV_MULTIPLICITY
2368 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2369#endif
2370 if (expect_false (ev_is_active (w))) 3452 if (expect_false (ev_is_active (w)))
2371 return; 3453 return;
2372 3454
2373 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3455 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2374 3456
2375 evpipe_init (EV_A); 3457#if EV_MULTIPLICITY
3458 assert (("libev: a signal must not be attached to two different loops",
3459 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2376 3460
2377 EV_FREQUENT_CHECK; 3461 signals [w->signum - 1].loop = EV_A;
3462#endif
2378 3463
3464 EV_FREQUENT_CHECK;
3465
3466#if EV_USE_SIGNALFD
3467 if (sigfd == -2)
2379 { 3468 {
2380#ifndef _WIN32 3469 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2381 sigset_t full, prev; 3470 if (sigfd < 0 && errno == EINVAL)
2382 sigfillset (&full); 3471 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2383 sigprocmask (SIG_SETMASK, &full, &prev);
2384#endif
2385 3472
2386 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3473 if (sigfd >= 0)
3474 {
3475 fd_intern (sigfd); /* doing it twice will not hurt */
2387 3476
2388#ifndef _WIN32 3477 sigemptyset (&sigfd_set);
2389 sigprocmask (SIG_SETMASK, &prev, 0); 3478
2390#endif 3479 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3480 ev_set_priority (&sigfd_w, EV_MAXPRI);
3481 ev_io_start (EV_A_ &sigfd_w);
3482 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3483 }
2391 } 3484 }
3485
3486 if (sigfd >= 0)
3487 {
3488 /* TODO: check .head */
3489 sigaddset (&sigfd_set, w->signum);
3490 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3491
3492 signalfd (sigfd, &sigfd_set, 0);
3493 }
3494#endif
2392 3495
2393 ev_start (EV_A_ (W)w, 1); 3496 ev_start (EV_A_ (W)w, 1);
2394 wlist_add (&signals [w->signum - 1].head, (WL)w); 3497 wlist_add (&signals [w->signum - 1].head, (WL)w);
2395 3498
2396 if (!((WL)w)->next) 3499 if (!((WL)w)->next)
3500# if EV_USE_SIGNALFD
3501 if (sigfd < 0) /*TODO*/
3502# endif
2397 { 3503 {
2398#if _WIN32 3504# ifdef _WIN32
3505 evpipe_init (EV_A);
3506
2399 signal (w->signum, ev_sighandler); 3507 signal (w->signum, ev_sighandler);
2400#else 3508# else
2401 struct sigaction sa; 3509 struct sigaction sa;
3510
3511 evpipe_init (EV_A);
3512
2402 sa.sa_handler = ev_sighandler; 3513 sa.sa_handler = ev_sighandler;
2403 sigfillset (&sa.sa_mask); 3514 sigfillset (&sa.sa_mask);
2404 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3515 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2405 sigaction (w->signum, &sa, 0); 3516 sigaction (w->signum, &sa, 0);
3517
3518 if (origflags & EVFLAG_NOSIGMASK)
3519 {
3520 sigemptyset (&sa.sa_mask);
3521 sigaddset (&sa.sa_mask, w->signum);
3522 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3523 }
2406#endif 3524#endif
2407 } 3525 }
2408 3526
2409 EV_FREQUENT_CHECK; 3527 EV_FREQUENT_CHECK;
2410} 3528}
2411 3529
2412void noinline 3530void noinline
2413ev_signal_stop (EV_P_ ev_signal *w) 3531ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2414{ 3532{
2415 clear_pending (EV_A_ (W)w); 3533 clear_pending (EV_A_ (W)w);
2416 if (expect_false (!ev_is_active (w))) 3534 if (expect_false (!ev_is_active (w)))
2417 return; 3535 return;
2418 3536
… …
2420 3538
2421 wlist_del (&signals [w->signum - 1].head, (WL)w); 3539 wlist_del (&signals [w->signum - 1].head, (WL)w);
2422 ev_stop (EV_A_ (W)w); 3540 ev_stop (EV_A_ (W)w);
2423 3541
2424 if (!signals [w->signum - 1].head) 3542 if (!signals [w->signum - 1].head)
3543 {
3544#if EV_MULTIPLICITY
3545 signals [w->signum - 1].loop = 0; /* unattach from signal */
3546#endif
3547#if EV_USE_SIGNALFD
3548 if (sigfd >= 0)
3549 {
3550 sigset_t ss;
3551
3552 sigemptyset (&ss);
3553 sigaddset (&ss, w->signum);
3554 sigdelset (&sigfd_set, w->signum);
3555
3556 signalfd (sigfd, &sigfd_set, 0);
3557 sigprocmask (SIG_UNBLOCK, &ss, 0);
3558 }
3559 else
3560#endif
2425 signal (w->signum, SIG_DFL); 3561 signal (w->signum, SIG_DFL);
3562 }
2426 3563
2427 EV_FREQUENT_CHECK; 3564 EV_FREQUENT_CHECK;
2428} 3565}
3566
3567#endif
3568
3569#if EV_CHILD_ENABLE
2429 3570
2430void 3571void
2431ev_child_start (EV_P_ ev_child *w) 3572ev_child_start (EV_P_ ev_child *w) EV_THROW
2432{ 3573{
2433#if EV_MULTIPLICITY 3574#if EV_MULTIPLICITY
2434 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3575 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2435#endif 3576#endif
2436 if (expect_false (ev_is_active (w))) 3577 if (expect_false (ev_is_active (w)))
2437 return; 3578 return;
2438 3579
2439 EV_FREQUENT_CHECK; 3580 EV_FREQUENT_CHECK;
2440 3581
2441 ev_start (EV_A_ (W)w, 1); 3582 ev_start (EV_A_ (W)w, 1);
2442 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3583 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2443 3584
2444 EV_FREQUENT_CHECK; 3585 EV_FREQUENT_CHECK;
2445} 3586}
2446 3587
2447void 3588void
2448ev_child_stop (EV_P_ ev_child *w) 3589ev_child_stop (EV_P_ ev_child *w) EV_THROW
2449{ 3590{
2450 clear_pending (EV_A_ (W)w); 3591 clear_pending (EV_A_ (W)w);
2451 if (expect_false (!ev_is_active (w))) 3592 if (expect_false (!ev_is_active (w)))
2452 return; 3593 return;
2453 3594
2454 EV_FREQUENT_CHECK; 3595 EV_FREQUENT_CHECK;
2455 3596
2456 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3597 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2457 ev_stop (EV_A_ (W)w); 3598 ev_stop (EV_A_ (W)w);
2458 3599
2459 EV_FREQUENT_CHECK; 3600 EV_FREQUENT_CHECK;
2460} 3601}
3602
3603#endif
2461 3604
2462#if EV_STAT_ENABLE 3605#if EV_STAT_ENABLE
2463 3606
2464# ifdef _WIN32 3607# ifdef _WIN32
2465# undef lstat 3608# undef lstat
… …
2471#define MIN_STAT_INTERVAL 0.1074891 3614#define MIN_STAT_INTERVAL 0.1074891
2472 3615
2473static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3616static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2474 3617
2475#if EV_USE_INOTIFY 3618#if EV_USE_INOTIFY
2476# define EV_INOTIFY_BUFSIZE 8192 3619
3620/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3621# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2477 3622
2478static void noinline 3623static void noinline
2479infy_add (EV_P_ ev_stat *w) 3624infy_add (EV_P_ ev_stat *w)
2480{ 3625{
2481 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); 3626 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);
2482 3627
2483 if (w->wd < 0) 3628 if (w->wd >= 0)
3629 {
3630 struct statfs sfs;
3631
3632 /* now local changes will be tracked by inotify, but remote changes won't */
3633 /* unless the filesystem is known to be local, we therefore still poll */
3634 /* also do poll on <2.6.25, but with normal frequency */
3635
3636 if (!fs_2625)
3637 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3638 else if (!statfs (w->path, &sfs)
3639 && (sfs.f_type == 0x1373 /* devfs */
3640 || sfs.f_type == 0xEF53 /* ext2/3 */
3641 || sfs.f_type == 0x3153464a /* jfs */
3642 || sfs.f_type == 0x52654973 /* reiser3 */
3643 || sfs.f_type == 0x01021994 /* tempfs */
3644 || sfs.f_type == 0x58465342 /* xfs */))
3645 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3646 else
3647 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2484 { 3648 }
3649 else
3650 {
3651 /* can't use inotify, continue to stat */
2485 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3652 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2486 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2487 3653
2488 /* monitor some parent directory for speedup hints */ 3654 /* if path is not there, monitor some parent directory for speedup hints */
2489 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3655 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2490 /* but an efficiency issue only */ 3656 /* but an efficiency issue only */
2491 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3657 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2492 { 3658 {
2493 char path [4096]; 3659 char path [4096];
… …
2503 if (!pend || pend == path) 3669 if (!pend || pend == path)
2504 break; 3670 break;
2505 3671
2506 *pend = 0; 3672 *pend = 0;
2507 w->wd = inotify_add_watch (fs_fd, path, mask); 3673 w->wd = inotify_add_watch (fs_fd, path, mask);
2508 } 3674 }
2509 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3675 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2510 } 3676 }
2511 } 3677 }
2512 3678
2513 if (w->wd >= 0) 3679 if (w->wd >= 0)
2514 {
2515 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3680 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2516 3681
2517 /* now local changes will be tracked by inotify, but remote changes won't */ 3682 /* now re-arm timer, if required */
2518 /* unless the filesystem it known to be local, we therefore still poll */ 3683 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2519 /* also do poll on <2.6.25, but with normal frequency */
2520 struct statfs sfs;
2521
2522 if (fs_2625 && !statfs (w->path, &sfs))
2523 if (sfs.f_type == 0x1373 /* devfs */
2524 || sfs.f_type == 0xEF53 /* ext2/3 */
2525 || sfs.f_type == 0x3153464a /* jfs */
2526 || sfs.f_type == 0x52654973 /* reiser3 */
2527 || sfs.f_type == 0x01021994 /* tempfs */
2528 || sfs.f_type == 0x58465342 /* xfs */)
2529 return;
2530
2531 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2532 ev_timer_again (EV_A_ &w->timer); 3684 ev_timer_again (EV_A_ &w->timer);
2533 } 3685 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2534} 3686}
2535 3687
2536static void noinline 3688static void noinline
2537infy_del (EV_P_ ev_stat *w) 3689infy_del (EV_P_ ev_stat *w)
2538{ 3690{
… …
2541 3693
2542 if (wd < 0) 3694 if (wd < 0)
2543 return; 3695 return;
2544 3696
2545 w->wd = -2; 3697 w->wd = -2;
2546 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3698 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2547 wlist_del (&fs_hash [slot].head, (WL)w); 3699 wlist_del (&fs_hash [slot].head, (WL)w);
2548 3700
2549 /* remove this watcher, if others are watching it, they will rearm */ 3701 /* remove this watcher, if others are watching it, they will rearm */
2550 inotify_rm_watch (fs_fd, wd); 3702 inotify_rm_watch (fs_fd, wd);
2551} 3703}
… …
2553static void noinline 3705static void noinline
2554infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3706infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2555{ 3707{
2556 if (slot < 0) 3708 if (slot < 0)
2557 /* overflow, need to check for all hash slots */ 3709 /* overflow, need to check for all hash slots */
2558 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3710 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2559 infy_wd (EV_A_ slot, wd, ev); 3711 infy_wd (EV_A_ slot, wd, ev);
2560 else 3712 else
2561 { 3713 {
2562 WL w_; 3714 WL w_;
2563 3715
2564 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3716 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2565 { 3717 {
2566 ev_stat *w = (ev_stat *)w_; 3718 ev_stat *w = (ev_stat *)w_;
2567 w_ = w_->next; /* lets us remove this watcher and all before it */ 3719 w_ = w_->next; /* lets us remove this watcher and all before it */
2568 3720
2569 if (w->wd == wd || wd == -1) 3721 if (w->wd == wd || wd == -1)
2570 { 3722 {
2571 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3723 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2572 { 3724 {
2573 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3725 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2574 w->wd = -1; 3726 w->wd = -1;
2575 infy_add (EV_A_ w); /* re-add, no matter what */ 3727 infy_add (EV_A_ w); /* re-add, no matter what */
2576 } 3728 }
2577 3729
2578 stat_timer_cb (EV_A_ &w->timer, 0); 3730 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2583 3735
2584static void 3736static void
2585infy_cb (EV_P_ ev_io *w, int revents) 3737infy_cb (EV_P_ ev_io *w, int revents)
2586{ 3738{
2587 char buf [EV_INOTIFY_BUFSIZE]; 3739 char buf [EV_INOTIFY_BUFSIZE];
2588 struct inotify_event *ev = (struct inotify_event *)buf;
2589 int ofs; 3740 int ofs;
2590 int len = read (fs_fd, buf, sizeof (buf)); 3741 int len = read (fs_fd, buf, sizeof (buf));
2591 3742
2592 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3743 for (ofs = 0; ofs < len; )
3744 {
3745 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2593 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3746 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3747 ofs += sizeof (struct inotify_event) + ev->len;
3748 }
2594} 3749}
2595 3750
2596void inline_size 3751inline_size void ecb_cold
2597check_2625 (EV_P) 3752ev_check_2625 (EV_P)
2598{ 3753{
2599 /* kernels < 2.6.25 are borked 3754 /* kernels < 2.6.25 are borked
2600 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3755 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2601 */ 3756 */
2602 struct utsname buf; 3757 if (ev_linux_version () < 0x020619)
2603 int major, minor, micro;
2604
2605 if (uname (&buf))
2606 return; 3758 return;
2607 3759
2608 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2609 return;
2610
2611 if (major < 2
2612 || (major == 2 && minor < 6)
2613 || (major == 2 && minor == 6 && micro < 25))
2614 return;
2615
2616 fs_2625 = 1; 3760 fs_2625 = 1;
2617} 3761}
2618 3762
2619void inline_size 3763inline_size int
3764infy_newfd (void)
3765{
3766#if defined IN_CLOEXEC && defined IN_NONBLOCK
3767 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3768 if (fd >= 0)
3769 return fd;
3770#endif
3771 return inotify_init ();
3772}
3773
3774inline_size void
2620infy_init (EV_P) 3775infy_init (EV_P)
2621{ 3776{
2622 if (fs_fd != -2) 3777 if (fs_fd != -2)
2623 return; 3778 return;
2624 3779
2625 fs_fd = -1; 3780 fs_fd = -1;
2626 3781
2627 check_2625 (EV_A); 3782 ev_check_2625 (EV_A);
2628 3783
2629 fs_fd = inotify_init (); 3784 fs_fd = infy_newfd ();
2630 3785
2631 if (fs_fd >= 0) 3786 if (fs_fd >= 0)
2632 { 3787 {
3788 fd_intern (fs_fd);
2633 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3789 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2634 ev_set_priority (&fs_w, EV_MAXPRI); 3790 ev_set_priority (&fs_w, EV_MAXPRI);
2635 ev_io_start (EV_A_ &fs_w); 3791 ev_io_start (EV_A_ &fs_w);
3792 ev_unref (EV_A);
2636 } 3793 }
2637} 3794}
2638 3795
2639void inline_size 3796inline_size void
2640infy_fork (EV_P) 3797infy_fork (EV_P)
2641{ 3798{
2642 int slot; 3799 int slot;
2643 3800
2644 if (fs_fd < 0) 3801 if (fs_fd < 0)
2645 return; 3802 return;
2646 3803
3804 ev_ref (EV_A);
3805 ev_io_stop (EV_A_ &fs_w);
2647 close (fs_fd); 3806 close (fs_fd);
2648 fs_fd = inotify_init (); 3807 fs_fd = infy_newfd ();
2649 3808
3809 if (fs_fd >= 0)
3810 {
3811 fd_intern (fs_fd);
3812 ev_io_set (&fs_w, fs_fd, EV_READ);
3813 ev_io_start (EV_A_ &fs_w);
3814 ev_unref (EV_A);
3815 }
3816
2650 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3817 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2651 { 3818 {
2652 WL w_ = fs_hash [slot].head; 3819 WL w_ = fs_hash [slot].head;
2653 fs_hash [slot].head = 0; 3820 fs_hash [slot].head = 0;
2654 3821
2655 while (w_) 3822 while (w_)
… …
2660 w->wd = -1; 3827 w->wd = -1;
2661 3828
2662 if (fs_fd >= 0) 3829 if (fs_fd >= 0)
2663 infy_add (EV_A_ w); /* re-add, no matter what */ 3830 infy_add (EV_A_ w); /* re-add, no matter what */
2664 else 3831 else
3832 {
3833 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3834 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2665 ev_timer_again (EV_A_ &w->timer); 3835 ev_timer_again (EV_A_ &w->timer);
3836 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3837 }
2666 } 3838 }
2667 } 3839 }
2668} 3840}
2669 3841
2670#endif 3842#endif
… …
2674#else 3846#else
2675# define EV_LSTAT(p,b) lstat (p, b) 3847# define EV_LSTAT(p,b) lstat (p, b)
2676#endif 3848#endif
2677 3849
2678void 3850void
2679ev_stat_stat (EV_P_ ev_stat *w) 3851ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2680{ 3852{
2681 if (lstat (w->path, &w->attr) < 0) 3853 if (lstat (w->path, &w->attr) < 0)
2682 w->attr.st_nlink = 0; 3854 w->attr.st_nlink = 0;
2683 else if (!w->attr.st_nlink) 3855 else if (!w->attr.st_nlink)
2684 w->attr.st_nlink = 1; 3856 w->attr.st_nlink = 1;
… …
2687static void noinline 3859static void noinline
2688stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3860stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2689{ 3861{
2690 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3862 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2691 3863
2692 /* we copy this here each the time so that */ 3864 ev_statdata prev = w->attr;
2693 /* prev has the old value when the callback gets invoked */
2694 w->prev = w->attr;
2695 ev_stat_stat (EV_A_ w); 3865 ev_stat_stat (EV_A_ w);
2696 3866
2697 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3867 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2698 if ( 3868 if (
2699 w->prev.st_dev != w->attr.st_dev 3869 prev.st_dev != w->attr.st_dev
2700 || w->prev.st_ino != w->attr.st_ino 3870 || prev.st_ino != w->attr.st_ino
2701 || w->prev.st_mode != w->attr.st_mode 3871 || prev.st_mode != w->attr.st_mode
2702 || w->prev.st_nlink != w->attr.st_nlink 3872 || prev.st_nlink != w->attr.st_nlink
2703 || w->prev.st_uid != w->attr.st_uid 3873 || prev.st_uid != w->attr.st_uid
2704 || w->prev.st_gid != w->attr.st_gid 3874 || prev.st_gid != w->attr.st_gid
2705 || w->prev.st_rdev != w->attr.st_rdev 3875 || prev.st_rdev != w->attr.st_rdev
2706 || w->prev.st_size != w->attr.st_size 3876 || prev.st_size != w->attr.st_size
2707 || w->prev.st_atime != w->attr.st_atime 3877 || prev.st_atime != w->attr.st_atime
2708 || w->prev.st_mtime != w->attr.st_mtime 3878 || prev.st_mtime != w->attr.st_mtime
2709 || w->prev.st_ctime != w->attr.st_ctime 3879 || prev.st_ctime != w->attr.st_ctime
2710 ) { 3880 ) {
3881 /* we only update w->prev on actual differences */
3882 /* in case we test more often than invoke the callback, */
3883 /* to ensure that prev is always different to attr */
3884 w->prev = prev;
3885
2711 #if EV_USE_INOTIFY 3886 #if EV_USE_INOTIFY
2712 if (fs_fd >= 0) 3887 if (fs_fd >= 0)
2713 { 3888 {
2714 infy_del (EV_A_ w); 3889 infy_del (EV_A_ w);
2715 infy_add (EV_A_ w); 3890 infy_add (EV_A_ w);
… …
2720 ev_feed_event (EV_A_ w, EV_STAT); 3895 ev_feed_event (EV_A_ w, EV_STAT);
2721 } 3896 }
2722} 3897}
2723 3898
2724void 3899void
2725ev_stat_start (EV_P_ ev_stat *w) 3900ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2726{ 3901{
2727 if (expect_false (ev_is_active (w))) 3902 if (expect_false (ev_is_active (w)))
2728 return; 3903 return;
2729 3904
2730 ev_stat_stat (EV_A_ w); 3905 ev_stat_stat (EV_A_ w);
… …
2740 3915
2741 if (fs_fd >= 0) 3916 if (fs_fd >= 0)
2742 infy_add (EV_A_ w); 3917 infy_add (EV_A_ w);
2743 else 3918 else
2744#endif 3919#endif
3920 {
2745 ev_timer_again (EV_A_ &w->timer); 3921 ev_timer_again (EV_A_ &w->timer);
3922 ev_unref (EV_A);
3923 }
2746 3924
2747 ev_start (EV_A_ (W)w, 1); 3925 ev_start (EV_A_ (W)w, 1);
2748 3926
2749 EV_FREQUENT_CHECK; 3927 EV_FREQUENT_CHECK;
2750} 3928}
2751 3929
2752void 3930void
2753ev_stat_stop (EV_P_ ev_stat *w) 3931ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2754{ 3932{
2755 clear_pending (EV_A_ (W)w); 3933 clear_pending (EV_A_ (W)w);
2756 if (expect_false (!ev_is_active (w))) 3934 if (expect_false (!ev_is_active (w)))
2757 return; 3935 return;
2758 3936
2759 EV_FREQUENT_CHECK; 3937 EV_FREQUENT_CHECK;
2760 3938
2761#if EV_USE_INOTIFY 3939#if EV_USE_INOTIFY
2762 infy_del (EV_A_ w); 3940 infy_del (EV_A_ w);
2763#endif 3941#endif
3942
3943 if (ev_is_active (&w->timer))
3944 {
3945 ev_ref (EV_A);
2764 ev_timer_stop (EV_A_ &w->timer); 3946 ev_timer_stop (EV_A_ &w->timer);
3947 }
2765 3948
2766 ev_stop (EV_A_ (W)w); 3949 ev_stop (EV_A_ (W)w);
2767 3950
2768 EV_FREQUENT_CHECK; 3951 EV_FREQUENT_CHECK;
2769} 3952}
2770#endif 3953#endif
2771 3954
2772#if EV_IDLE_ENABLE 3955#if EV_IDLE_ENABLE
2773void 3956void
2774ev_idle_start (EV_P_ ev_idle *w) 3957ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2775{ 3958{
2776 if (expect_false (ev_is_active (w))) 3959 if (expect_false (ev_is_active (w)))
2777 return; 3960 return;
2778 3961
2779 pri_adjust (EV_A_ (W)w); 3962 pri_adjust (EV_A_ (W)w);
… …
2792 3975
2793 EV_FREQUENT_CHECK; 3976 EV_FREQUENT_CHECK;
2794} 3977}
2795 3978
2796void 3979void
2797ev_idle_stop (EV_P_ ev_idle *w) 3980ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2798{ 3981{
2799 clear_pending (EV_A_ (W)w); 3982 clear_pending (EV_A_ (W)w);
2800 if (expect_false (!ev_is_active (w))) 3983 if (expect_false (!ev_is_active (w)))
2801 return; 3984 return;
2802 3985
… …
2814 3997
2815 EV_FREQUENT_CHECK; 3998 EV_FREQUENT_CHECK;
2816} 3999}
2817#endif 4000#endif
2818 4001
4002#if EV_PREPARE_ENABLE
2819void 4003void
2820ev_prepare_start (EV_P_ ev_prepare *w) 4004ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2821{ 4005{
2822 if (expect_false (ev_is_active (w))) 4006 if (expect_false (ev_is_active (w)))
2823 return; 4007 return;
2824 4008
2825 EV_FREQUENT_CHECK; 4009 EV_FREQUENT_CHECK;
… …
2830 4014
2831 EV_FREQUENT_CHECK; 4015 EV_FREQUENT_CHECK;
2832} 4016}
2833 4017
2834void 4018void
2835ev_prepare_stop (EV_P_ ev_prepare *w) 4019ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2836{ 4020{
2837 clear_pending (EV_A_ (W)w); 4021 clear_pending (EV_A_ (W)w);
2838 if (expect_false (!ev_is_active (w))) 4022 if (expect_false (!ev_is_active (w)))
2839 return; 4023 return;
2840 4024
… …
2849 4033
2850 ev_stop (EV_A_ (W)w); 4034 ev_stop (EV_A_ (W)w);
2851 4035
2852 EV_FREQUENT_CHECK; 4036 EV_FREQUENT_CHECK;
2853} 4037}
4038#endif
2854 4039
4040#if EV_CHECK_ENABLE
2855void 4041void
2856ev_check_start (EV_P_ ev_check *w) 4042ev_check_start (EV_P_ ev_check *w) EV_THROW
2857{ 4043{
2858 if (expect_false (ev_is_active (w))) 4044 if (expect_false (ev_is_active (w)))
2859 return; 4045 return;
2860 4046
2861 EV_FREQUENT_CHECK; 4047 EV_FREQUENT_CHECK;
… …
2866 4052
2867 EV_FREQUENT_CHECK; 4053 EV_FREQUENT_CHECK;
2868} 4054}
2869 4055
2870void 4056void
2871ev_check_stop (EV_P_ ev_check *w) 4057ev_check_stop (EV_P_ ev_check *w) EV_THROW
2872{ 4058{
2873 clear_pending (EV_A_ (W)w); 4059 clear_pending (EV_A_ (W)w);
2874 if (expect_false (!ev_is_active (w))) 4060 if (expect_false (!ev_is_active (w)))
2875 return; 4061 return;
2876 4062
… …
2885 4071
2886 ev_stop (EV_A_ (W)w); 4072 ev_stop (EV_A_ (W)w);
2887 4073
2888 EV_FREQUENT_CHECK; 4074 EV_FREQUENT_CHECK;
2889} 4075}
4076#endif
2890 4077
2891#if EV_EMBED_ENABLE 4078#if EV_EMBED_ENABLE
2892void noinline 4079void noinline
2893ev_embed_sweep (EV_P_ ev_embed *w) 4080ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2894{ 4081{
2895 ev_loop (w->other, EVLOOP_NONBLOCK); 4082 ev_run (w->other, EVRUN_NOWAIT);
2896} 4083}
2897 4084
2898static void 4085static void
2899embed_io_cb (EV_P_ ev_io *io, int revents) 4086embed_io_cb (EV_P_ ev_io *io, int revents)
2900{ 4087{
2901 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4088 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2902 4089
2903 if (ev_cb (w)) 4090 if (ev_cb (w))
2904 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4091 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2905 else 4092 else
2906 ev_loop (w->other, EVLOOP_NONBLOCK); 4093 ev_run (w->other, EVRUN_NOWAIT);
2907} 4094}
2908 4095
2909static void 4096static void
2910embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4097embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2911{ 4098{
2912 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4099 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2913 4100
2914 { 4101 {
2915 struct ev_loop *loop = w->other; 4102 EV_P = w->other;
2916 4103
2917 while (fdchangecnt) 4104 while (fdchangecnt)
2918 { 4105 {
2919 fd_reify (EV_A); 4106 fd_reify (EV_A);
2920 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4107 ev_run (EV_A_ EVRUN_NOWAIT);
2921 } 4108 }
2922 } 4109 }
2923} 4110}
2924 4111
2925static void 4112static void
… …
2928 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4115 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2929 4116
2930 ev_embed_stop (EV_A_ w); 4117 ev_embed_stop (EV_A_ w);
2931 4118
2932 { 4119 {
2933 struct ev_loop *loop = w->other; 4120 EV_P = w->other;
2934 4121
2935 ev_loop_fork (EV_A); 4122 ev_loop_fork (EV_A);
2936 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4123 ev_run (EV_A_ EVRUN_NOWAIT);
2937 } 4124 }
2938 4125
2939 ev_embed_start (EV_A_ w); 4126 ev_embed_start (EV_A_ w);
2940} 4127}
2941 4128
… …
2946 ev_idle_stop (EV_A_ idle); 4133 ev_idle_stop (EV_A_ idle);
2947} 4134}
2948#endif 4135#endif
2949 4136
2950void 4137void
2951ev_embed_start (EV_P_ ev_embed *w) 4138ev_embed_start (EV_P_ ev_embed *w) EV_THROW
2952{ 4139{
2953 if (expect_false (ev_is_active (w))) 4140 if (expect_false (ev_is_active (w)))
2954 return; 4141 return;
2955 4142
2956 { 4143 {
2957 struct ev_loop *loop = w->other; 4144 EV_P = w->other;
2958 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4145 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2959 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4146 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2960 } 4147 }
2961 4148
2962 EV_FREQUENT_CHECK; 4149 EV_FREQUENT_CHECK;
… …
2977 4164
2978 EV_FREQUENT_CHECK; 4165 EV_FREQUENT_CHECK;
2979} 4166}
2980 4167
2981void 4168void
2982ev_embed_stop (EV_P_ ev_embed *w) 4169ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
2983{ 4170{
2984 clear_pending (EV_A_ (W)w); 4171 clear_pending (EV_A_ (W)w);
2985 if (expect_false (!ev_is_active (w))) 4172 if (expect_false (!ev_is_active (w)))
2986 return; 4173 return;
2987 4174
… …
2989 4176
2990 ev_io_stop (EV_A_ &w->io); 4177 ev_io_stop (EV_A_ &w->io);
2991 ev_prepare_stop (EV_A_ &w->prepare); 4178 ev_prepare_stop (EV_A_ &w->prepare);
2992 ev_fork_stop (EV_A_ &w->fork); 4179 ev_fork_stop (EV_A_ &w->fork);
2993 4180
4181 ev_stop (EV_A_ (W)w);
4182
2994 EV_FREQUENT_CHECK; 4183 EV_FREQUENT_CHECK;
2995} 4184}
2996#endif 4185#endif
2997 4186
2998#if EV_FORK_ENABLE 4187#if EV_FORK_ENABLE
2999void 4188void
3000ev_fork_start (EV_P_ ev_fork *w) 4189ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3001{ 4190{
3002 if (expect_false (ev_is_active (w))) 4191 if (expect_false (ev_is_active (w)))
3003 return; 4192 return;
3004 4193
3005 EV_FREQUENT_CHECK; 4194 EV_FREQUENT_CHECK;
… …
3010 4199
3011 EV_FREQUENT_CHECK; 4200 EV_FREQUENT_CHECK;
3012} 4201}
3013 4202
3014void 4203void
3015ev_fork_stop (EV_P_ ev_fork *w) 4204ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3016{ 4205{
3017 clear_pending (EV_A_ (W)w); 4206 clear_pending (EV_A_ (W)w);
3018 if (expect_false (!ev_is_active (w))) 4207 if (expect_false (!ev_is_active (w)))
3019 return; 4208 return;
3020 4209
… …
3031 4220
3032 EV_FREQUENT_CHECK; 4221 EV_FREQUENT_CHECK;
3033} 4222}
3034#endif 4223#endif
3035 4224
4225#if EV_CLEANUP_ENABLE
4226void
4227ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4228{
4229 if (expect_false (ev_is_active (w)))
4230 return;
4231
4232 EV_FREQUENT_CHECK;
4233
4234 ev_start (EV_A_ (W)w, ++cleanupcnt);
4235 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4236 cleanups [cleanupcnt - 1] = w;
4237
4238 /* cleanup watchers should never keep a refcount on the loop */
4239 ev_unref (EV_A);
4240 EV_FREQUENT_CHECK;
4241}
4242
4243void
4244ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4245{
4246 clear_pending (EV_A_ (W)w);
4247 if (expect_false (!ev_is_active (w)))
4248 return;
4249
4250 EV_FREQUENT_CHECK;
4251 ev_ref (EV_A);
4252
4253 {
4254 int active = ev_active (w);
4255
4256 cleanups [active - 1] = cleanups [--cleanupcnt];
4257 ev_active (cleanups [active - 1]) = active;
4258 }
4259
4260 ev_stop (EV_A_ (W)w);
4261
4262 EV_FREQUENT_CHECK;
4263}
4264#endif
4265
3036#if EV_ASYNC_ENABLE 4266#if EV_ASYNC_ENABLE
3037void 4267void
3038ev_async_start (EV_P_ ev_async *w) 4268ev_async_start (EV_P_ ev_async *w) EV_THROW
3039{ 4269{
3040 if (expect_false (ev_is_active (w))) 4270 if (expect_false (ev_is_active (w)))
3041 return; 4271 return;
4272
4273 w->sent = 0;
3042 4274
3043 evpipe_init (EV_A); 4275 evpipe_init (EV_A);
3044 4276
3045 EV_FREQUENT_CHECK; 4277 EV_FREQUENT_CHECK;
3046 4278
… …
3050 4282
3051 EV_FREQUENT_CHECK; 4283 EV_FREQUENT_CHECK;
3052} 4284}
3053 4285
3054void 4286void
3055ev_async_stop (EV_P_ ev_async *w) 4287ev_async_stop (EV_P_ ev_async *w) EV_THROW
3056{ 4288{
3057 clear_pending (EV_A_ (W)w); 4289 clear_pending (EV_A_ (W)w);
3058 if (expect_false (!ev_is_active (w))) 4290 if (expect_false (!ev_is_active (w)))
3059 return; 4291 return;
3060 4292
… …
3071 4303
3072 EV_FREQUENT_CHECK; 4304 EV_FREQUENT_CHECK;
3073} 4305}
3074 4306
3075void 4307void
3076ev_async_send (EV_P_ ev_async *w) 4308ev_async_send (EV_P_ ev_async *w) EV_THROW
3077{ 4309{
3078 w->sent = 1; 4310 w->sent = 1;
3079 evpipe_write (EV_A_ &gotasync); 4311 evpipe_write (EV_A_ &async_pending);
3080} 4312}
3081#endif 4313#endif
3082 4314
3083/*****************************************************************************/ 4315/*****************************************************************************/
3084 4316
… …
3118 4350
3119 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4351 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3120} 4352}
3121 4353
3122void 4354void
3123ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4355ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3124{ 4356{
3125 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4357 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3126 4358
3127 if (expect_false (!once)) 4359 if (expect_false (!once))
3128 { 4360 {
3129 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4361 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3130 return; 4362 return;
3131 } 4363 }
3132 4364
3133 once->cb = cb; 4365 once->cb = cb;
3134 once->arg = arg; 4366 once->arg = arg;
… …
3146 ev_timer_set (&once->to, timeout, 0.); 4378 ev_timer_set (&once->to, timeout, 0.);
3147 ev_timer_start (EV_A_ &once->to); 4379 ev_timer_start (EV_A_ &once->to);
3148 } 4380 }
3149} 4381}
3150 4382
4383/*****************************************************************************/
4384
4385#if EV_WALK_ENABLE
4386void ecb_cold
4387ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4388{
4389 int i, j;
4390 ev_watcher_list *wl, *wn;
4391
4392 if (types & (EV_IO | EV_EMBED))
4393 for (i = 0; i < anfdmax; ++i)
4394 for (wl = anfds [i].head; wl; )
4395 {
4396 wn = wl->next;
4397
4398#if EV_EMBED_ENABLE
4399 if (ev_cb ((ev_io *)wl) == embed_io_cb)
4400 {
4401 if (types & EV_EMBED)
4402 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
4403 }
4404 else
4405#endif
4406#if EV_USE_INOTIFY
4407 if (ev_cb ((ev_io *)wl) == infy_cb)
4408 ;
4409 else
4410#endif
4411 if ((ev_io *)wl != &pipe_w)
4412 if (types & EV_IO)
4413 cb (EV_A_ EV_IO, wl);
4414
4415 wl = wn;
4416 }
4417
4418 if (types & (EV_TIMER | EV_STAT))
4419 for (i = timercnt + HEAP0; i-- > HEAP0; )
4420#if EV_STAT_ENABLE
4421 /*TODO: timer is not always active*/
4422 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
4423 {
4424 if (types & EV_STAT)
4425 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
4426 }
4427 else
4428#endif
4429 if (types & EV_TIMER)
4430 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
4431
4432#if EV_PERIODIC_ENABLE
4433 if (types & EV_PERIODIC)
4434 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4435 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4436#endif
4437
4438#if EV_IDLE_ENABLE
4439 if (types & EV_IDLE)
4440 for (j = NUMPRI; j--; )
4441 for (i = idlecnt [j]; i--; )
4442 cb (EV_A_ EV_IDLE, idles [j][i]);
4443#endif
4444
4445#if EV_FORK_ENABLE
4446 if (types & EV_FORK)
4447 for (i = forkcnt; i--; )
4448 if (ev_cb (forks [i]) != embed_fork_cb)
4449 cb (EV_A_ EV_FORK, forks [i]);
4450#endif
4451
4452#if EV_ASYNC_ENABLE
4453 if (types & EV_ASYNC)
4454 for (i = asynccnt; i--; )
4455 cb (EV_A_ EV_ASYNC, asyncs [i]);
4456#endif
4457
4458#if EV_PREPARE_ENABLE
4459 if (types & EV_PREPARE)
4460 for (i = preparecnt; i--; )
4461# if EV_EMBED_ENABLE
4462 if (ev_cb (prepares [i]) != embed_prepare_cb)
4463# endif
4464 cb (EV_A_ EV_PREPARE, prepares [i]);
4465#endif
4466
4467#if EV_CHECK_ENABLE
4468 if (types & EV_CHECK)
4469 for (i = checkcnt; i--; )
4470 cb (EV_A_ EV_CHECK, checks [i]);
4471#endif
4472
4473#if EV_SIGNAL_ENABLE
4474 if (types & EV_SIGNAL)
4475 for (i = 0; i < EV_NSIG - 1; ++i)
4476 for (wl = signals [i].head; wl; )
4477 {
4478 wn = wl->next;
4479 cb (EV_A_ EV_SIGNAL, wl);
4480 wl = wn;
4481 }
4482#endif
4483
4484#if EV_CHILD_ENABLE
4485 if (types & EV_CHILD)
4486 for (i = (EV_PID_HASHSIZE); i--; )
4487 for (wl = childs [i]; wl; )
4488 {
4489 wn = wl->next;
4490 cb (EV_A_ EV_CHILD, wl);
4491 wl = wn;
4492 }
4493#endif
4494/* EV_STAT 0x00001000 /* stat data changed */
4495/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4496}
4497#endif
4498
3151#if EV_MULTIPLICITY 4499#if EV_MULTIPLICITY
3152 #include "ev_wrap.h" 4500 #include "ev_wrap.h"
3153#endif 4501#endif
3154 4502
3155#ifdef __cplusplus
3156}
3157#endif
3158

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