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Comparing libev/ev.c (file contents):
Revision 1.254 by root, Wed Jun 4 20:26:55 2008 UTC vs.
Revision 1.413 by root, Fri Mar 23 19:06:08 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 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 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
51 47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
53
54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME
58# define EV_USE_REALTIME 0
59# endif
60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1
62# endif
63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL)
65# define EV_USE_CLOCK_SYSCALL 0
66# endif
67
52# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
55# endif 71# endif
56# ifndef EV_USE_REALTIME 72# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 73# define EV_USE_REALTIME 0
58# endif 74# endif
59# else 75# else
60# ifndef EV_USE_MONOTONIC 76# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 77# define EV_USE_MONOTONIC 0
62# endif 78# endif
63# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
65# endif 81# endif
66# endif 82# endif
67 83
84# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
71# else 88# else
89# undef EV_USE_NANOSLEEP
72# 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
73# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
74# endif 100# endif
75 101
102# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 105# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 106# else
107# undef EV_USE_POLL
88# define EV_USE_POLL 0 108# define EV_USE_POLL 0
89# endif
90# endif 109# endif
91 110
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
95# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
98# endif 118# endif
99 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
106# endif 127# endif
107 128
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
111# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
114# endif 136# endif
115 137
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
122# endif 145# endif
123 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# 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
130# endif 163# endif
131 164
132#endif 165#endif
133 166
134#include <math.h>
135#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
136#include <fcntl.h> 169#include <fcntl.h>
137#include <stddef.h> 170#include <stddef.h>
138 171
139#include <stdio.h> 172#include <stdio.h>
140 173
141#include <assert.h> 174#include <assert.h>
142#include <errno.h> 175#include <errno.h>
143#include <sys/types.h> 176#include <sys/types.h>
144#include <time.h> 177#include <time.h>
178#include <limits.h>
145 179
146#include <signal.h> 180#include <signal.h>
147 181
148#ifdef EV_H 182#ifdef EV_H
149# include EV_H 183# include EV_H
150#else 184#else
151# 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
152#endif 197#endif
153 198
154#ifndef _WIN32 199#ifndef _WIN32
155# include <sys/time.h> 200# include <sys/time.h>
156# include <sys/wait.h> 201# include <sys/wait.h>
157# include <unistd.h> 202# include <unistd.h>
158#else 203#else
204# include <io.h>
159# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 206# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 207# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 208# define EV_SELECT_IS_WINSOCKET 1
163# endif 209# endif
210# undef EV_AVOID_STDIO
164#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
165 220
166/* 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
254
255#ifndef EV_USE_CLOCK_SYSCALL
256# if __linux && __GLIBC__ >= 2
257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
258# else
259# define EV_USE_CLOCK_SYSCALL 0
260# endif
261#endif
167 262
168#ifndef EV_USE_MONOTONIC 263#ifndef EV_USE_MONOTONIC
169# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 264# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
170# define EV_USE_MONOTONIC 1 265# define EV_USE_MONOTONIC EV_FEATURE_OS
171# else 266# else
172# define EV_USE_MONOTONIC 0 267# define EV_USE_MONOTONIC 0
173# endif 268# endif
174#endif 269#endif
175 270
176#ifndef EV_USE_REALTIME 271#ifndef EV_USE_REALTIME
177# define EV_USE_REALTIME 0 272# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
178#endif 273#endif
179 274
180#ifndef EV_USE_NANOSLEEP 275#ifndef EV_USE_NANOSLEEP
181# if _POSIX_C_SOURCE >= 199309L 276# if _POSIX_C_SOURCE >= 199309L
182# define EV_USE_NANOSLEEP 1 277# define EV_USE_NANOSLEEP EV_FEATURE_OS
183# else 278# else
184# define EV_USE_NANOSLEEP 0 279# define EV_USE_NANOSLEEP 0
185# endif 280# endif
186#endif 281#endif
187 282
188#ifndef EV_USE_SELECT 283#ifndef EV_USE_SELECT
189# define EV_USE_SELECT 1 284# define EV_USE_SELECT EV_FEATURE_BACKENDS
190#endif 285#endif
191 286
192#ifndef EV_USE_POLL 287#ifndef EV_USE_POLL
193# ifdef _WIN32 288# ifdef _WIN32
194# define EV_USE_POLL 0 289# define EV_USE_POLL 0
195# else 290# else
196# define EV_USE_POLL 1 291# define EV_USE_POLL EV_FEATURE_BACKENDS
197# endif 292# endif
198#endif 293#endif
199 294
200#ifndef EV_USE_EPOLL 295#ifndef EV_USE_EPOLL
201# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
202# define EV_USE_EPOLL 1 297# define EV_USE_EPOLL EV_FEATURE_BACKENDS
203# else 298# else
204# define EV_USE_EPOLL 0 299# define EV_USE_EPOLL 0
205# endif 300# endif
206#endif 301#endif
207 302
… …
213# define EV_USE_PORT 0 308# define EV_USE_PORT 0
214#endif 309#endif
215 310
216#ifndef EV_USE_INOTIFY 311#ifndef EV_USE_INOTIFY
217# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
218# define EV_USE_INOTIFY 1 313# define EV_USE_INOTIFY EV_FEATURE_OS
219# else 314# else
220# define EV_USE_INOTIFY 0 315# define EV_USE_INOTIFY 0
221# endif 316# endif
222#endif 317#endif
223 318
224#ifndef EV_PID_HASHSIZE 319#ifndef EV_PID_HASHSIZE
225# if EV_MINIMAL 320# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
226# define EV_PID_HASHSIZE 1
227# else
228# define EV_PID_HASHSIZE 16
229# endif
230#endif 321#endif
231 322
232#ifndef EV_INOTIFY_HASHSIZE 323#ifndef EV_INOTIFY_HASHSIZE
233# if EV_MINIMAL 324# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
234# define EV_INOTIFY_HASHSIZE 1
235# else
236# define EV_INOTIFY_HASHSIZE 16
237# endif
238#endif 325#endif
239 326
240#ifndef EV_USE_EVENTFD 327#ifndef EV_USE_EVENTFD
241# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 328# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
242# define EV_USE_EVENTFD 1 329# define EV_USE_EVENTFD EV_FEATURE_OS
243# else 330# else
244# 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
245# endif 340# endif
246#endif 341#endif
247 342
248#if 0 /* debugging */ 343#if 0 /* debugging */
249# define EV_VERIFY 3 344# define EV_VERIFY 3
250# define EV_USE_4HEAP 1 345# define EV_USE_4HEAP 1
251# define EV_HEAP_CACHE_AT 1 346# define EV_HEAP_CACHE_AT 1
252#endif 347#endif
253 348
254#ifndef EV_VERIFY 349#ifndef EV_VERIFY
255# define EV_VERIFY !EV_MINIMAL 350# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
256#endif 351#endif
257 352
258#ifndef EV_USE_4HEAP 353#ifndef EV_USE_4HEAP
259# define EV_USE_4HEAP !EV_MINIMAL 354# define EV_USE_4HEAP EV_FEATURE_DATA
260#endif 355#endif
261 356
262#ifndef EV_HEAP_CACHE_AT 357#ifndef EV_HEAP_CACHE_AT
263# 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 <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
264#endif 373#endif
265 374
266/* 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
267 382
268#ifndef CLOCK_MONOTONIC 383#ifndef CLOCK_MONOTONIC
269# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
270# define EV_USE_MONOTONIC 0 385# define EV_USE_MONOTONIC 0
271#endif 386#endif
… …
279# undef EV_USE_INOTIFY 394# undef EV_USE_INOTIFY
280# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
281#endif 396#endif
282 397
283#if !EV_USE_NANOSLEEP 398#if !EV_USE_NANOSLEEP
284# ifndef _WIN32 399/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined(_WIN32) && !defined(__hpux)
285# include <sys/select.h> 401# include <sys/select.h>
286# endif 402# endif
287#endif 403#endif
288 404
289#if EV_USE_INOTIFY 405#if EV_USE_INOTIFY
406# include <sys/statfs.h>
290# include <sys/inotify.h> 407# include <sys/inotify.h>
408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
409# ifndef IN_DONT_FOLLOW
410# undef EV_USE_INOTIFY
411# define EV_USE_INOTIFY 0
412# endif
291#endif 413#endif
292 414
293#if EV_SELECT_IS_WINSOCKET 415#if EV_SELECT_IS_WINSOCKET
294# include <winsock.h> 416# include <winsock.h>
295#endif 417#endif
296 418
297#if EV_USE_EVENTFD 419#if EV_USE_EVENTFD
298/* 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 */
299# include <stdint.h> 421# include <stdint.h>
300# ifdef __cplusplus 422# ifndef EFD_NONBLOCK
301extern "C" { 423# define EFD_NONBLOCK O_NONBLOCK
302# endif 424# endif
303int eventfd (unsigned int initval, int flags); 425# ifndef EFD_CLOEXEC
304# ifdef __cplusplus 426# ifdef O_CLOEXEC
305} 427# define EFD_CLOEXEC O_CLOEXEC
428# else
429# define EFD_CLOEXEC 02000000
430# endif
306# 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};
307#endif 455#endif
308 456
309/**/ 457/**/
310 458
311#if EV_VERIFY >= 3 459#if EV_VERIFY >= 3
312# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 460# define EV_FREQUENT_CHECK ev_verify (EV_A)
313#else 461#else
314# define EV_FREQUENT_CHECK do { } while (0) 462# define EV_FREQUENT_CHECK do { } while (0)
315#endif 463#endif
316 464
317/* 465/*
318 * This is used to avoid floating point rounding problems. 466 * This is used to work around floating point rounding problems.
319 * It is added to ev_rt_now when scheduling periodics
320 * to ensure progress, time-wise, even when rounding
321 * errors are against us.
322 * This value is good at least till the year 4000. 467 * This value is good at least till the year 4000.
323 * Better solutions welcome.
324 */ 468 */
325#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 */
326 471
327#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) */
328#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) */
329/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
330 474
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;
331#if __GNUC__ >= 4 519 #if __GNUC__
332# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
333# 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
334#else 526#else
335# define expect(expr,value) (expr) 527 #include <inttypes.h>
336# define noinline
337# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
338# define inline
339# 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)))
340#endif 542 #endif
543#endif
341 544
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 #endif
585 #endif
586#endif
587
588#ifndef ECB_MEMORY_FENCE
589 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
590 #define ECB_MEMORY_FENCE __sync_synchronize ()
591 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
592 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
593 #elif _MSC_VER >= 1400 /* VC++ 2005 */
594 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
595 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
596 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
597 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
598 #elif defined(_WIN32)
599 #include <WinNT.h>
600 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
601 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
602 #include <mbarrier.h>
603 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
604 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
605 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
606 #elif __xlC__
607 #define ECB_MEMORY_FENCE __lwsync ()
608 #endif
609#endif
610
611#ifndef ECB_MEMORY_FENCE
612 #if !ECB_AVOID_PTHREADS
613 /*
614 * if you get undefined symbol references to pthread_mutex_lock,
615 * or failure to find pthread.h, then you should implement
616 * the ECB_MEMORY_FENCE operations for your cpu/compiler
617 * OR provide pthread.h and link against the posix thread library
618 * of your system.
619 */
620 #include <pthread.h>
621 #define ECB_NEEDS_PTHREADS 1
622 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
623
624 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
625 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
626 #endif
627#endif
628
629#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
630 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
631#endif
632
633#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
634 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
635#endif
636
637/*****************************************************************************/
638
639#define ECB_C99 (__STDC_VERSION__ >= 199901L)
640
641#if __cplusplus
642 #define ecb_inline static inline
643#elif ECB_GCC_VERSION(2,5)
644 #define ecb_inline static __inline__
645#elif ECB_C99
646 #define ecb_inline static inline
647#else
648 #define ecb_inline static
649#endif
650
651#if ECB_GCC_VERSION(3,3)
652 #define ecb_restrict __restrict__
653#elif ECB_C99
654 #define ecb_restrict restrict
655#else
656 #define ecb_restrict
657#endif
658
659typedef int ecb_bool;
660
661#define ECB_CONCAT_(a, b) a ## b
662#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
663#define ECB_STRINGIFY_(a) # a
664#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
665
666#define ecb_function_ ecb_inline
667
668#if ECB_GCC_VERSION(3,1)
669 #define ecb_attribute(attrlist) __attribute__(attrlist)
670 #define ecb_is_constant(expr) __builtin_constant_p (expr)
671 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
672 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
673#else
674 #define ecb_attribute(attrlist)
675 #define ecb_is_constant(expr) 0
676 #define ecb_expect(expr,value) (expr)
677 #define ecb_prefetch(addr,rw,locality)
678#endif
679
680/* no emulation for ecb_decltype */
681#if ECB_GCC_VERSION(4,5)
682 #define ecb_decltype(x) __decltype(x)
683#elif ECB_GCC_VERSION(3,0)
684 #define ecb_decltype(x) __typeof(x)
685#endif
686
687#define ecb_noinline ecb_attribute ((__noinline__))
688#define ecb_noreturn ecb_attribute ((__noreturn__))
689#define ecb_unused ecb_attribute ((__unused__))
690#define ecb_const ecb_attribute ((__const__))
691#define ecb_pure ecb_attribute ((__pure__))
692
693#if ECB_GCC_VERSION(4,3)
694 #define ecb_artificial ecb_attribute ((__artificial__))
695 #define ecb_hot ecb_attribute ((__hot__))
696 #define ecb_cold ecb_attribute ((__cold__))
697#else
698 #define ecb_artificial
699 #define ecb_hot
700 #define ecb_cold
701#endif
702
703/* put around conditional expressions if you are very sure that the */
704/* expression is mostly true or mostly false. note that these return */
705/* booleans, not the expression. */
342#define expect_false(expr) expect ((expr) != 0, 0) 706#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
343#define expect_true(expr) expect ((expr) != 0, 1) 707#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
708/* for compatibility to the rest of the world */
709#define ecb_likely(expr) ecb_expect_true (expr)
710#define ecb_unlikely(expr) ecb_expect_false (expr)
711
712/* count trailing zero bits and count # of one bits */
713#if ECB_GCC_VERSION(3,4)
714 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
715 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
716 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
717 #define ecb_ctz32(x) __builtin_ctz (x)
718 #define ecb_ctz64(x) __builtin_ctzll (x)
719 #define ecb_popcount32(x) __builtin_popcount (x)
720 /* no popcountll */
721#else
722 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
723 ecb_function_ int
724 ecb_ctz32 (uint32_t x)
725 {
726 int r = 0;
727
728 x &= ~x + 1; /* this isolates the lowest bit */
729
730#if ECB_branchless_on_i386
731 r += !!(x & 0xaaaaaaaa) << 0;
732 r += !!(x & 0xcccccccc) << 1;
733 r += !!(x & 0xf0f0f0f0) << 2;
734 r += !!(x & 0xff00ff00) << 3;
735 r += !!(x & 0xffff0000) << 4;
736#else
737 if (x & 0xaaaaaaaa) r += 1;
738 if (x & 0xcccccccc) r += 2;
739 if (x & 0xf0f0f0f0) r += 4;
740 if (x & 0xff00ff00) r += 8;
741 if (x & 0xffff0000) r += 16;
742#endif
743
744 return r;
745 }
746
747 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
748 ecb_function_ int
749 ecb_ctz64 (uint64_t x)
750 {
751 int shift = x & 0xffffffffU ? 0 : 32;
752 return ecb_ctz32 (x >> shift) + shift;
753 }
754
755 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
756 ecb_function_ int
757 ecb_popcount32 (uint32_t x)
758 {
759 x -= (x >> 1) & 0x55555555;
760 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
761 x = ((x >> 4) + x) & 0x0f0f0f0f;
762 x *= 0x01010101;
763
764 return x >> 24;
765 }
766
767 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
768 ecb_function_ int ecb_ld32 (uint32_t x)
769 {
770 int r = 0;
771
772 if (x >> 16) { x >>= 16; r += 16; }
773 if (x >> 8) { x >>= 8; r += 8; }
774 if (x >> 4) { x >>= 4; r += 4; }
775 if (x >> 2) { x >>= 2; r += 2; }
776 if (x >> 1) { r += 1; }
777
778 return r;
779 }
780
781 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
782 ecb_function_ int ecb_ld64 (uint64_t x)
783 {
784 int r = 0;
785
786 if (x >> 32) { x >>= 32; r += 32; }
787
788 return r + ecb_ld32 (x);
789 }
790#endif
791
792ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
793ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
794{
795 return ( (x * 0x0802U & 0x22110U)
796 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
797}
798
799ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
800ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
801{
802 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
803 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
804 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
805 x = ( x >> 8 ) | ( x << 8);
806
807 return x;
808}
809
810ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
811ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
812{
813 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
814 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
815 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
816 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
817 x = ( x >> 16 ) | ( x << 16);
818
819 return x;
820}
821
822/* popcount64 is only available on 64 bit cpus as gcc builtin */
823/* so for this version we are lazy */
824ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
825ecb_function_ int
826ecb_popcount64 (uint64_t x)
827{
828 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
829}
830
831ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
832ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
833ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
834ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
835ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
836ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
837ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
838ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
839
840ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
841ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
842ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
843ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
844ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
845ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
846ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
847ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
848
849#if ECB_GCC_VERSION(4,3)
850 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
851 #define ecb_bswap32(x) __builtin_bswap32 (x)
852 #define ecb_bswap64(x) __builtin_bswap64 (x)
853#else
854 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
855 ecb_function_ uint16_t
856 ecb_bswap16 (uint16_t x)
857 {
858 return ecb_rotl16 (x, 8);
859 }
860
861 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
862 ecb_function_ uint32_t
863 ecb_bswap32 (uint32_t x)
864 {
865 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
866 }
867
868 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
869 ecb_function_ uint64_t
870 ecb_bswap64 (uint64_t x)
871 {
872 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
873 }
874#endif
875
876#if ECB_GCC_VERSION(4,5)
877 #define ecb_unreachable() __builtin_unreachable ()
878#else
879 /* this seems to work fine, but gcc always emits a warning for it :/ */
880 ecb_inline void ecb_unreachable (void) ecb_noreturn;
881 ecb_inline void ecb_unreachable (void) { }
882#endif
883
884/* try to tell the compiler that some condition is definitely true */
885#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
886
887ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
888ecb_inline unsigned char
889ecb_byteorder_helper (void)
890{
891 const uint32_t u = 0x11223344;
892 return *(unsigned char *)&u;
893}
894
895ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
896ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
897ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
898ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
899
900#if ECB_GCC_VERSION(3,0) || ECB_C99
901 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
902#else
903 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
904#endif
905
906#if __cplusplus
907 template<typename T>
908 static inline T ecb_div_rd (T val, T div)
909 {
910 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
911 }
912 template<typename T>
913 static inline T ecb_div_ru (T val, T div)
914 {
915 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
916 }
917#else
918 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
919 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
920#endif
921
922#if ecb_cplusplus_does_not_suck
923 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
924 template<typename T, int N>
925 static inline int ecb_array_length (const T (&arr)[N])
926 {
927 return N;
928 }
929#else
930 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
931#endif
932
933#endif
934
935/* ECB.H END */
936
937#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
938/* if your architecture doesn't need memory fences, e.g. because it is
939 * single-cpu/core, or if you use libev in a project that doesn't use libev
940 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
941 * libev, in which cases the memory fences become nops.
942 * alternatively, you can remove this #error and link against libpthread,
943 * which will then provide the memory fences.
944 */
945# error "memory fences not defined for your architecture, please report"
946#endif
947
948#ifndef ECB_MEMORY_FENCE
949# define ECB_MEMORY_FENCE do { } while (0)
950# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
951# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
952#endif
953
954#define expect_false(cond) ecb_expect_false (cond)
955#define expect_true(cond) ecb_expect_true (cond)
956#define noinline ecb_noinline
957
344#define inline_size static inline 958#define inline_size ecb_inline
345 959
346#if EV_MINIMAL 960#if EV_FEATURE_CODE
961# define inline_speed ecb_inline
962#else
347# define inline_speed static noinline 963# define inline_speed static noinline
964#endif
965
966#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
967
968#if EV_MINPRI == EV_MAXPRI
969# define ABSPRI(w) (((W)w), 0)
348#else 970#else
349# define inline_speed static inline
350#endif
351
352#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
353#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 971# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
972#endif
354 973
355#define EMPTY /* required for microsofts broken pseudo-c compiler */ 974#define EMPTY /* required for microsofts broken pseudo-c compiler */
356#define EMPTY2(a,b) /* used to suppress some warnings */ 975#define EMPTY2(a,b) /* used to suppress some warnings */
357 976
358typedef ev_watcher *W; 977typedef ev_watcher *W;
… …
360typedef ev_watcher_time *WT; 979typedef ev_watcher_time *WT;
361 980
362#define ev_active(w) ((W)(w))->active 981#define ev_active(w) ((W)(w))->active
363#define ev_at(w) ((WT)(w))->at 982#define ev_at(w) ((WT)(w))->at
364 983
984#if EV_USE_REALTIME
985/* sig_atomic_t is used to avoid per-thread variables or locking but still */
986/* giving it a reasonably high chance of working on typical architectures */
987static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
988#endif
989
365#if EV_USE_MONOTONIC 990#if EV_USE_MONOTONIC
366/* sig_atomic_t is used to avoid per-thread variables or locking but still */
367/* giving it a reasonably high chance of working on typical architetcures */
368static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 991static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
992#endif
993
994#ifndef EV_FD_TO_WIN32_HANDLE
995# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
996#endif
997#ifndef EV_WIN32_HANDLE_TO_FD
998# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
999#endif
1000#ifndef EV_WIN32_CLOSE_FD
1001# define EV_WIN32_CLOSE_FD(fd) close (fd)
369#endif 1002#endif
370 1003
371#ifdef _WIN32 1004#ifdef _WIN32
372# include "ev_win32.c" 1005# include "ev_win32.c"
373#endif 1006#endif
374 1007
375/*****************************************************************************/ 1008/*****************************************************************************/
376 1009
1010/* define a suitable floor function (only used by periodics atm) */
1011
1012#if EV_USE_FLOOR
1013# include <math.h>
1014# define ev_floor(v) floor (v)
1015#else
1016
1017#include <float.h>
1018
1019/* a floor() replacement function, should be independent of ev_tstamp type */
1020static ev_tstamp noinline
1021ev_floor (ev_tstamp v)
1022{
1023 /* the choice of shift factor is not terribly important */
1024#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1025 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1026#else
1027 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1028#endif
1029
1030 /* argument too large for an unsigned long? */
1031 if (expect_false (v >= shift))
1032 {
1033 ev_tstamp f;
1034
1035 if (v == v - 1.)
1036 return v; /* very large number */
1037
1038 f = shift * ev_floor (v * (1. / shift));
1039 return f + ev_floor (v - f);
1040 }
1041
1042 /* special treatment for negative args? */
1043 if (expect_false (v < 0.))
1044 {
1045 ev_tstamp f = -ev_floor (-v);
1046
1047 return f - (f == v ? 0 : 1);
1048 }
1049
1050 /* fits into an unsigned long */
1051 return (unsigned long)v;
1052}
1053
1054#endif
1055
1056/*****************************************************************************/
1057
1058#ifdef __linux
1059# include <sys/utsname.h>
1060#endif
1061
1062static unsigned int noinline ecb_cold
1063ev_linux_version (void)
1064{
1065#ifdef __linux
1066 unsigned int v = 0;
1067 struct utsname buf;
1068 int i;
1069 char *p = buf.release;
1070
1071 if (uname (&buf))
1072 return 0;
1073
1074 for (i = 3+1; --i; )
1075 {
1076 unsigned int c = 0;
1077
1078 for (;;)
1079 {
1080 if (*p >= '0' && *p <= '9')
1081 c = c * 10 + *p++ - '0';
1082 else
1083 {
1084 p += *p == '.';
1085 break;
1086 }
1087 }
1088
1089 v = (v << 8) | c;
1090 }
1091
1092 return v;
1093#else
1094 return 0;
1095#endif
1096}
1097
1098/*****************************************************************************/
1099
1100#if EV_AVOID_STDIO
1101static void noinline ecb_cold
1102ev_printerr (const char *msg)
1103{
1104 write (STDERR_FILENO, msg, strlen (msg));
1105}
1106#endif
1107
377static void (*syserr_cb)(const char *msg); 1108static void (*syserr_cb)(const char *msg);
378 1109
379void 1110void ecb_cold
380ev_set_syserr_cb (void (*cb)(const char *msg)) 1111ev_set_syserr_cb (void (*cb)(const char *msg))
381{ 1112{
382 syserr_cb = cb; 1113 syserr_cb = cb;
383} 1114}
384 1115
385static void noinline 1116static void noinline ecb_cold
386syserr (const char *msg) 1117ev_syserr (const char *msg)
387{ 1118{
388 if (!msg) 1119 if (!msg)
389 msg = "(libev) system error"; 1120 msg = "(libev) system error";
390 1121
391 if (syserr_cb) 1122 if (syserr_cb)
392 syserr_cb (msg); 1123 syserr_cb (msg);
393 else 1124 else
394 { 1125 {
1126#if EV_AVOID_STDIO
1127 ev_printerr (msg);
1128 ev_printerr (": ");
1129 ev_printerr (strerror (errno));
1130 ev_printerr ("\n");
1131#else
395 perror (msg); 1132 perror (msg);
1133#endif
396 abort (); 1134 abort ();
397 } 1135 }
398} 1136}
399 1137
400static void * 1138static void *
401ev_realloc_emul (void *ptr, long size) 1139ev_realloc_emul (void *ptr, long size)
402{ 1140{
1141#if __GLIBC__
1142 return realloc (ptr, size);
1143#else
403 /* some systems, notably openbsd and darwin, fail to properly 1144 /* some systems, notably openbsd and darwin, fail to properly
404 * implement realloc (x, 0) (as required by both ansi c-98 and 1145 * implement realloc (x, 0) (as required by both ansi c-89 and
405 * the single unix specification, so work around them here. 1146 * the single unix specification, so work around them here.
406 */ 1147 */
407 1148
408 if (size) 1149 if (size)
409 return realloc (ptr, size); 1150 return realloc (ptr, size);
410 1151
411 free (ptr); 1152 free (ptr);
412 return 0; 1153 return 0;
1154#endif
413} 1155}
414 1156
415static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1157static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
416 1158
417void 1159void ecb_cold
418ev_set_allocator (void *(*cb)(void *ptr, long size)) 1160ev_set_allocator (void *(*cb)(void *ptr, long size))
419{ 1161{
420 alloc = cb; 1162 alloc = cb;
421} 1163}
422 1164
… …
425{ 1167{
426 ptr = alloc (ptr, size); 1168 ptr = alloc (ptr, size);
427 1169
428 if (!ptr && size) 1170 if (!ptr && size)
429 { 1171 {
1172#if EV_AVOID_STDIO
1173 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1174#else
430 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1175 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1176#endif
431 abort (); 1177 abort ();
432 } 1178 }
433 1179
434 return ptr; 1180 return ptr;
435} 1181}
… …
437#define ev_malloc(size) ev_realloc (0, (size)) 1183#define ev_malloc(size) ev_realloc (0, (size))
438#define ev_free(ptr) ev_realloc ((ptr), 0) 1184#define ev_free(ptr) ev_realloc ((ptr), 0)
439 1185
440/*****************************************************************************/ 1186/*****************************************************************************/
441 1187
1188/* set in reify when reification needed */
1189#define EV_ANFD_REIFY 1
1190
1191/* file descriptor info structure */
442typedef struct 1192typedef struct
443{ 1193{
444 WL head; 1194 WL head;
445 unsigned char events; 1195 unsigned char events; /* the events watched for */
1196 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1197 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
446 unsigned char reify; 1198 unsigned char unused;
1199#if EV_USE_EPOLL
1200 unsigned int egen; /* generation counter to counter epoll bugs */
1201#endif
447#if EV_SELECT_IS_WINSOCKET 1202#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
448 SOCKET handle; 1203 SOCKET handle;
449#endif 1204#endif
1205#if EV_USE_IOCP
1206 OVERLAPPED or, ow;
1207#endif
450} ANFD; 1208} ANFD;
451 1209
1210/* stores the pending event set for a given watcher */
452typedef struct 1211typedef struct
453{ 1212{
454 W w; 1213 W w;
455 int events; 1214 int events; /* the pending event set for the given watcher */
456} ANPENDING; 1215} ANPENDING;
457 1216
458#if EV_USE_INOTIFY 1217#if EV_USE_INOTIFY
459/* hash table entry per inotify-id */ 1218/* hash table entry per inotify-id */
460typedef struct 1219typedef struct
… …
463} ANFS; 1222} ANFS;
464#endif 1223#endif
465 1224
466/* Heap Entry */ 1225/* Heap Entry */
467#if EV_HEAP_CACHE_AT 1226#if EV_HEAP_CACHE_AT
1227 /* a heap element */
468 typedef struct { 1228 typedef struct {
469 ev_tstamp at; 1229 ev_tstamp at;
470 WT w; 1230 WT w;
471 } ANHE; 1231 } ANHE;
472 1232
473 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1233 #define ANHE_w(he) (he).w /* access watcher, read-write */
474 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1234 #define ANHE_at(he) (he).at /* access cached at, read-only */
475 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 1235 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
476#else 1236#else
1237 /* a heap element */
477 typedef WT ANHE; 1238 typedef WT ANHE;
478 1239
479 #define ANHE_w(he) (he) 1240 #define ANHE_w(he) (he)
480 #define ANHE_at(he) (he)->at 1241 #define ANHE_at(he) (he)->at
481 #define ANHE_at_cache(he) 1242 #define ANHE_at_cache(he)
… …
492 #undef VAR 1253 #undef VAR
493 }; 1254 };
494 #include "ev_wrap.h" 1255 #include "ev_wrap.h"
495 1256
496 static struct ev_loop default_loop_struct; 1257 static struct ev_loop default_loop_struct;
497 struct ev_loop *ev_default_loop_ptr; 1258 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
498 1259
499#else 1260#else
500 1261
501 ev_tstamp ev_rt_now; 1262 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
502 #define VAR(name,decl) static decl; 1263 #define VAR(name,decl) static decl;
503 #include "ev_vars.h" 1264 #include "ev_vars.h"
504 #undef VAR 1265 #undef VAR
505 1266
506 static int ev_default_loop_ptr; 1267 static int ev_default_loop_ptr;
507 1268
508#endif 1269#endif
509 1270
1271#if EV_FEATURE_API
1272# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1273# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1274# define EV_INVOKE_PENDING invoke_cb (EV_A)
1275#else
1276# define EV_RELEASE_CB (void)0
1277# define EV_ACQUIRE_CB (void)0
1278# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1279#endif
1280
1281#define EVBREAK_RECURSE 0x80
1282
510/*****************************************************************************/ 1283/*****************************************************************************/
511 1284
1285#ifndef EV_HAVE_EV_TIME
512ev_tstamp 1286ev_tstamp
513ev_time (void) 1287ev_time (void)
514{ 1288{
515#if EV_USE_REALTIME 1289#if EV_USE_REALTIME
1290 if (expect_true (have_realtime))
1291 {
516 struct timespec ts; 1292 struct timespec ts;
517 clock_gettime (CLOCK_REALTIME, &ts); 1293 clock_gettime (CLOCK_REALTIME, &ts);
518 return ts.tv_sec + ts.tv_nsec * 1e-9; 1294 return ts.tv_sec + ts.tv_nsec * 1e-9;
519#else 1295 }
1296#endif
1297
520 struct timeval tv; 1298 struct timeval tv;
521 gettimeofday (&tv, 0); 1299 gettimeofday (&tv, 0);
522 return tv.tv_sec + tv.tv_usec * 1e-6; 1300 return tv.tv_sec + tv.tv_usec * 1e-6;
523#endif
524} 1301}
1302#endif
525 1303
526ev_tstamp inline_size 1304inline_size ev_tstamp
527get_clock (void) 1305get_clock (void)
528{ 1306{
529#if EV_USE_MONOTONIC 1307#if EV_USE_MONOTONIC
530 if (expect_true (have_monotonic)) 1308 if (expect_true (have_monotonic))
531 { 1309 {
… …
552 if (delay > 0.) 1330 if (delay > 0.)
553 { 1331 {
554#if EV_USE_NANOSLEEP 1332#if EV_USE_NANOSLEEP
555 struct timespec ts; 1333 struct timespec ts;
556 1334
557 ts.tv_sec = (time_t)delay; 1335 EV_TS_SET (ts, delay);
558 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
559
560 nanosleep (&ts, 0); 1336 nanosleep (&ts, 0);
561#elif defined(_WIN32) 1337#elif defined(_WIN32)
562 Sleep ((unsigned long)(delay * 1e3)); 1338 Sleep ((unsigned long)(delay * 1e3));
563#else 1339#else
564 struct timeval tv; 1340 struct timeval tv;
565 1341
566 tv.tv_sec = (time_t)delay; 1342 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
567 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 1343 /* something not guaranteed by newer posix versions, but guaranteed */
568 1344 /* by older ones */
1345 EV_TV_SET (tv, delay);
569 select (0, 0, 0, 0, &tv); 1346 select (0, 0, 0, 0, &tv);
570#endif 1347#endif
571 } 1348 }
572} 1349}
573 1350
574/*****************************************************************************/ 1351/*****************************************************************************/
575 1352
576#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1353#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
577 1354
578int inline_size 1355/* find a suitable new size for the given array, */
1356/* hopefully by rounding to a nice-to-malloc size */
1357inline_size int
579array_nextsize (int elem, int cur, int cnt) 1358array_nextsize (int elem, int cur, int cnt)
580{ 1359{
581 int ncur = cur + 1; 1360 int ncur = cur + 1;
582 1361
583 do 1362 do
584 ncur <<= 1; 1363 ncur <<= 1;
585 while (cnt > ncur); 1364 while (cnt > ncur);
586 1365
587 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1366 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
588 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1367 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
589 { 1368 {
590 ncur *= elem; 1369 ncur *= elem;
591 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1370 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
592 ncur = ncur - sizeof (void *) * 4; 1371 ncur = ncur - sizeof (void *) * 4;
… …
594 } 1373 }
595 1374
596 return ncur; 1375 return ncur;
597} 1376}
598 1377
599static noinline void * 1378static void * noinline ecb_cold
600array_realloc (int elem, void *base, int *cur, int cnt) 1379array_realloc (int elem, void *base, int *cur, int cnt)
601{ 1380{
602 *cur = array_nextsize (elem, *cur, cnt); 1381 *cur = array_nextsize (elem, *cur, cnt);
603 return ev_realloc (base, elem * *cur); 1382 return ev_realloc (base, elem * *cur);
604} 1383}
1384
1385#define array_init_zero(base,count) \
1386 memset ((void *)(base), 0, sizeof (*(base)) * (count))
605 1387
606#define array_needsize(type,base,cur,cnt,init) \ 1388#define array_needsize(type,base,cur,cnt,init) \
607 if (expect_false ((cnt) > (cur))) \ 1389 if (expect_false ((cnt) > (cur))) \
608 { \ 1390 { \
609 int ocur_ = (cur); \ 1391 int ecb_unused ocur_ = (cur); \
610 (base) = (type *)array_realloc \ 1392 (base) = (type *)array_realloc \
611 (sizeof (type), (base), &(cur), (cnt)); \ 1393 (sizeof (type), (base), &(cur), (cnt)); \
612 init ((base) + (ocur_), (cur) - ocur_); \ 1394 init ((base) + (ocur_), (cur) - ocur_); \
613 } 1395 }
614 1396
… …
621 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1403 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
622 } 1404 }
623#endif 1405#endif
624 1406
625#define array_free(stem, idx) \ 1407#define array_free(stem, idx) \
626 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1408 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
627 1409
628/*****************************************************************************/ 1410/*****************************************************************************/
1411
1412/* dummy callback for pending events */
1413static void noinline
1414pendingcb (EV_P_ ev_prepare *w, int revents)
1415{
1416}
629 1417
630void noinline 1418void noinline
631ev_feed_event (EV_P_ void *w, int revents) 1419ev_feed_event (EV_P_ void *w, int revents)
632{ 1420{
633 W w_ = (W)w; 1421 W w_ = (W)w;
… …
642 pendings [pri][w_->pending - 1].w = w_; 1430 pendings [pri][w_->pending - 1].w = w_;
643 pendings [pri][w_->pending - 1].events = revents; 1431 pendings [pri][w_->pending - 1].events = revents;
644 } 1432 }
645} 1433}
646 1434
647void inline_speed 1435inline_speed void
1436feed_reverse (EV_P_ W w)
1437{
1438 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1439 rfeeds [rfeedcnt++] = w;
1440}
1441
1442inline_size void
1443feed_reverse_done (EV_P_ int revents)
1444{
1445 do
1446 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1447 while (rfeedcnt);
1448}
1449
1450inline_speed void
648queue_events (EV_P_ W *events, int eventcnt, int type) 1451queue_events (EV_P_ W *events, int eventcnt, int type)
649{ 1452{
650 int i; 1453 int i;
651 1454
652 for (i = 0; i < eventcnt; ++i) 1455 for (i = 0; i < eventcnt; ++i)
653 ev_feed_event (EV_A_ events [i], type); 1456 ev_feed_event (EV_A_ events [i], type);
654} 1457}
655 1458
656/*****************************************************************************/ 1459/*****************************************************************************/
657 1460
658void inline_size 1461inline_speed void
659anfds_init (ANFD *base, int count)
660{
661 while (count--)
662 {
663 base->head = 0;
664 base->events = EV_NONE;
665 base->reify = 0;
666
667 ++base;
668 }
669}
670
671void inline_speed
672fd_event (EV_P_ int fd, int revents) 1462fd_event_nocheck (EV_P_ int fd, int revents)
673{ 1463{
674 ANFD *anfd = anfds + fd; 1464 ANFD *anfd = anfds + fd;
675 ev_io *w; 1465 ev_io *w;
676 1466
677 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1467 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
681 if (ev) 1471 if (ev)
682 ev_feed_event (EV_A_ (W)w, ev); 1472 ev_feed_event (EV_A_ (W)w, ev);
683 } 1473 }
684} 1474}
685 1475
1476/* do not submit kernel events for fds that have reify set */
1477/* because that means they changed while we were polling for new events */
1478inline_speed void
1479fd_event (EV_P_ int fd, int revents)
1480{
1481 ANFD *anfd = anfds + fd;
1482
1483 if (expect_true (!anfd->reify))
1484 fd_event_nocheck (EV_A_ fd, revents);
1485}
1486
686void 1487void
687ev_feed_fd_event (EV_P_ int fd, int revents) 1488ev_feed_fd_event (EV_P_ int fd, int revents)
688{ 1489{
689 if (fd >= 0 && fd < anfdmax) 1490 if (fd >= 0 && fd < anfdmax)
690 fd_event (EV_A_ fd, revents); 1491 fd_event_nocheck (EV_A_ fd, revents);
691} 1492}
692 1493
693void inline_size 1494/* make sure the external fd watch events are in-sync */
1495/* with the kernel/libev internal state */
1496inline_size void
694fd_reify (EV_P) 1497fd_reify (EV_P)
695{ 1498{
696 int i; 1499 int i;
1500
1501#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1502 for (i = 0; i < fdchangecnt; ++i)
1503 {
1504 int fd = fdchanges [i];
1505 ANFD *anfd = anfds + fd;
1506
1507 if (anfd->reify & EV__IOFDSET && anfd->head)
1508 {
1509 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1510
1511 if (handle != anfd->handle)
1512 {
1513 unsigned long arg;
1514
1515 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1516
1517 /* handle changed, but fd didn't - we need to do it in two steps */
1518 backend_modify (EV_A_ fd, anfd->events, 0);
1519 anfd->events = 0;
1520 anfd->handle = handle;
1521 }
1522 }
1523 }
1524#endif
697 1525
698 for (i = 0; i < fdchangecnt; ++i) 1526 for (i = 0; i < fdchangecnt; ++i)
699 { 1527 {
700 int fd = fdchanges [i]; 1528 int fd = fdchanges [i];
701 ANFD *anfd = anfds + fd; 1529 ANFD *anfd = anfds + fd;
702 ev_io *w; 1530 ev_io *w;
703 1531
704 unsigned char events = 0; 1532 unsigned char o_events = anfd->events;
1533 unsigned char o_reify = anfd->reify;
705 1534
706 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1535 anfd->reify = 0;
707 events |= (unsigned char)w->events;
708 1536
709#if EV_SELECT_IS_WINSOCKET 1537 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
710 if (events)
711 { 1538 {
712 unsigned long arg; 1539 anfd->events = 0;
713 #ifdef EV_FD_TO_WIN32_HANDLE 1540
714 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1541 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
715 #else 1542 anfd->events |= (unsigned char)w->events;
716 anfd->handle = _get_osfhandle (fd); 1543
717 #endif 1544 if (o_events != anfd->events)
718 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1545 o_reify = EV__IOFDSET; /* actually |= */
719 } 1546 }
720#endif
721 1547
722 { 1548 if (o_reify & EV__IOFDSET)
723 unsigned char o_events = anfd->events;
724 unsigned char o_reify = anfd->reify;
725
726 anfd->reify = 0;
727 anfd->events = events;
728
729 if (o_events != events || o_reify & EV_IOFDSET)
730 backend_modify (EV_A_ fd, o_events, events); 1549 backend_modify (EV_A_ fd, o_events, anfd->events);
731 }
732 } 1550 }
733 1551
734 fdchangecnt = 0; 1552 fdchangecnt = 0;
735} 1553}
736 1554
737void inline_size 1555/* something about the given fd changed */
1556inline_size void
738fd_change (EV_P_ int fd, int flags) 1557fd_change (EV_P_ int fd, int flags)
739{ 1558{
740 unsigned char reify = anfds [fd].reify; 1559 unsigned char reify = anfds [fd].reify;
741 anfds [fd].reify |= flags; 1560 anfds [fd].reify |= flags;
742 1561
… …
746 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1565 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
747 fdchanges [fdchangecnt - 1] = fd; 1566 fdchanges [fdchangecnt - 1] = fd;
748 } 1567 }
749} 1568}
750 1569
751void inline_speed 1570/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1571inline_speed void ecb_cold
752fd_kill (EV_P_ int fd) 1572fd_kill (EV_P_ int fd)
753{ 1573{
754 ev_io *w; 1574 ev_io *w;
755 1575
756 while ((w = (ev_io *)anfds [fd].head)) 1576 while ((w = (ev_io *)anfds [fd].head))
… …
758 ev_io_stop (EV_A_ w); 1578 ev_io_stop (EV_A_ w);
759 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1579 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
760 } 1580 }
761} 1581}
762 1582
763int inline_size 1583/* check whether the given fd is actually valid, for error recovery */
1584inline_size int ecb_cold
764fd_valid (int fd) 1585fd_valid (int fd)
765{ 1586{
766#ifdef _WIN32 1587#ifdef _WIN32
767 return _get_osfhandle (fd) != -1; 1588 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
768#else 1589#else
769 return fcntl (fd, F_GETFD) != -1; 1590 return fcntl (fd, F_GETFD) != -1;
770#endif 1591#endif
771} 1592}
772 1593
773/* called on EBADF to verify fds */ 1594/* called on EBADF to verify fds */
774static void noinline 1595static void noinline ecb_cold
775fd_ebadf (EV_P) 1596fd_ebadf (EV_P)
776{ 1597{
777 int fd; 1598 int fd;
778 1599
779 for (fd = 0; fd < anfdmax; ++fd) 1600 for (fd = 0; fd < anfdmax; ++fd)
… …
781 if (!fd_valid (fd) && errno == EBADF) 1602 if (!fd_valid (fd) && errno == EBADF)
782 fd_kill (EV_A_ fd); 1603 fd_kill (EV_A_ fd);
783} 1604}
784 1605
785/* called on ENOMEM in select/poll to kill some fds and retry */ 1606/* called on ENOMEM in select/poll to kill some fds and retry */
786static void noinline 1607static void noinline ecb_cold
787fd_enomem (EV_P) 1608fd_enomem (EV_P)
788{ 1609{
789 int fd; 1610 int fd;
790 1611
791 for (fd = anfdmax; fd--; ) 1612 for (fd = anfdmax; fd--; )
792 if (anfds [fd].events) 1613 if (anfds [fd].events)
793 { 1614 {
794 fd_kill (EV_A_ fd); 1615 fd_kill (EV_A_ fd);
795 return; 1616 break;
796 } 1617 }
797} 1618}
798 1619
799/* usually called after fork if backend needs to re-arm all fds from scratch */ 1620/* usually called after fork if backend needs to re-arm all fds from scratch */
800static void noinline 1621static void noinline
… …
804 1625
805 for (fd = 0; fd < anfdmax; ++fd) 1626 for (fd = 0; fd < anfdmax; ++fd)
806 if (anfds [fd].events) 1627 if (anfds [fd].events)
807 { 1628 {
808 anfds [fd].events = 0; 1629 anfds [fd].events = 0;
1630 anfds [fd].emask = 0;
809 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1631 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
810 } 1632 }
811} 1633}
812 1634
1635/* used to prepare libev internal fd's */
1636/* this is not fork-safe */
1637inline_speed void
1638fd_intern (int fd)
1639{
1640#ifdef _WIN32
1641 unsigned long arg = 1;
1642 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1643#else
1644 fcntl (fd, F_SETFD, FD_CLOEXEC);
1645 fcntl (fd, F_SETFL, O_NONBLOCK);
1646#endif
1647}
1648
813/*****************************************************************************/ 1649/*****************************************************************************/
814 1650
815/* 1651/*
816 * the heap functions want a real array index. array index 0 uis guaranteed to not 1652 * the heap functions want a real array index. array index 0 is guaranteed to not
817 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1653 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
818 * the branching factor of the d-tree. 1654 * the branching factor of the d-tree.
819 */ 1655 */
820 1656
821/* 1657/*
… …
830#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1666#define HEAP0 (DHEAP - 1) /* index of first element in heap */
831#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1667#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
832#define UPHEAP_DONE(p,k) ((p) == (k)) 1668#define UPHEAP_DONE(p,k) ((p) == (k))
833 1669
834/* away from the root */ 1670/* away from the root */
835void inline_speed 1671inline_speed void
836downheap (ANHE *heap, int N, int k) 1672downheap (ANHE *heap, int N, int k)
837{ 1673{
838 ANHE he = heap [k]; 1674 ANHE he = heap [k];
839 ANHE *E = heap + N + HEAP0; 1675 ANHE *E = heap + N + HEAP0;
840 1676
… …
880#define HEAP0 1 1716#define HEAP0 1
881#define HPARENT(k) ((k) >> 1) 1717#define HPARENT(k) ((k) >> 1)
882#define UPHEAP_DONE(p,k) (!(p)) 1718#define UPHEAP_DONE(p,k) (!(p))
883 1719
884/* away from the root */ 1720/* away from the root */
885void inline_speed 1721inline_speed void
886downheap (ANHE *heap, int N, int k) 1722downheap (ANHE *heap, int N, int k)
887{ 1723{
888 ANHE he = heap [k]; 1724 ANHE he = heap [k];
889 1725
890 for (;;) 1726 for (;;)
891 { 1727 {
892 int c = k << 1; 1728 int c = k << 1;
893 1729
894 if (c > N + HEAP0 - 1) 1730 if (c >= N + HEAP0)
895 break; 1731 break;
896 1732
897 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1733 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
898 ? 1 : 0; 1734 ? 1 : 0;
899 1735
… …
910 ev_active (ANHE_w (he)) = k; 1746 ev_active (ANHE_w (he)) = k;
911} 1747}
912#endif 1748#endif
913 1749
914/* towards the root */ 1750/* towards the root */
915void inline_speed 1751inline_speed void
916upheap (ANHE *heap, int k) 1752upheap (ANHE *heap, int k)
917{ 1753{
918 ANHE he = heap [k]; 1754 ANHE he = heap [k];
919 1755
920 for (;;) 1756 for (;;)
… …
931 1767
932 heap [k] = he; 1768 heap [k] = he;
933 ev_active (ANHE_w (he)) = k; 1769 ev_active (ANHE_w (he)) = k;
934} 1770}
935 1771
936void inline_size 1772/* move an element suitably so it is in a correct place */
1773inline_size void
937adjustheap (ANHE *heap, int N, int k) 1774adjustheap (ANHE *heap, int N, int k)
938{ 1775{
939 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1776 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
940 upheap (heap, k); 1777 upheap (heap, k);
941 else 1778 else
942 downheap (heap, N, k); 1779 downheap (heap, N, k);
943} 1780}
944 1781
945/* rebuild the heap: this function is used only once and executed rarely */ 1782/* rebuild the heap: this function is used only once and executed rarely */
946void inline_size 1783inline_size void
947reheap (ANHE *heap, int N) 1784reheap (ANHE *heap, int N)
948{ 1785{
949 int i; 1786 int i;
950 1787
951 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1788 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
954 upheap (heap, i + HEAP0); 1791 upheap (heap, i + HEAP0);
955} 1792}
956 1793
957/*****************************************************************************/ 1794/*****************************************************************************/
958 1795
1796/* associate signal watchers to a signal signal */
959typedef struct 1797typedef struct
960{ 1798{
1799 EV_ATOMIC_T pending;
1800#if EV_MULTIPLICITY
1801 EV_P;
1802#endif
961 WL head; 1803 WL head;
962 EV_ATOMIC_T gotsig;
963} ANSIG; 1804} ANSIG;
964 1805
965static ANSIG *signals; 1806static ANSIG signals [EV_NSIG - 1];
966static int signalmax;
967
968static EV_ATOMIC_T gotsig;
969
970void inline_size
971signals_init (ANSIG *base, int count)
972{
973 while (count--)
974 {
975 base->head = 0;
976 base->gotsig = 0;
977
978 ++base;
979 }
980}
981 1807
982/*****************************************************************************/ 1808/*****************************************************************************/
983 1809
984void inline_speed 1810#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
985fd_intern (int fd)
986{
987#ifdef _WIN32
988 unsigned long arg = 1;
989 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
990#else
991 fcntl (fd, F_SETFD, FD_CLOEXEC);
992 fcntl (fd, F_SETFL, O_NONBLOCK);
993#endif
994}
995 1811
996static void noinline 1812static void noinline ecb_cold
997evpipe_init (EV_P) 1813evpipe_init (EV_P)
998{ 1814{
999 if (!ev_is_active (&pipeev)) 1815 if (!ev_is_active (&pipe_w))
1000 { 1816 {
1001#if EV_USE_EVENTFD 1817# if EV_USE_EVENTFD
1818 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1819 if (evfd < 0 && errno == EINVAL)
1002 if ((evfd = eventfd (0, 0)) >= 0) 1820 evfd = eventfd (0, 0);
1821
1822 if (evfd >= 0)
1003 { 1823 {
1004 evpipe [0] = -1; 1824 evpipe [0] = -1;
1005 fd_intern (evfd); 1825 fd_intern (evfd); /* doing it twice doesn't hurt */
1006 ev_io_set (&pipeev, evfd, EV_READ); 1826 ev_io_set (&pipe_w, evfd, EV_READ);
1007 } 1827 }
1008 else 1828 else
1009#endif 1829# endif
1010 { 1830 {
1011 while (pipe (evpipe)) 1831 while (pipe (evpipe))
1012 syserr ("(libev) error creating signal/async pipe"); 1832 ev_syserr ("(libev) error creating signal/async pipe");
1013 1833
1014 fd_intern (evpipe [0]); 1834 fd_intern (evpipe [0]);
1015 fd_intern (evpipe [1]); 1835 fd_intern (evpipe [1]);
1016 ev_io_set (&pipeev, evpipe [0], EV_READ); 1836 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1017 } 1837 }
1018 1838
1019 ev_io_start (EV_A_ &pipeev); 1839 ev_io_start (EV_A_ &pipe_w);
1020 ev_unref (EV_A); /* watcher should not keep loop alive */ 1840 ev_unref (EV_A); /* watcher should not keep loop alive */
1021 } 1841 }
1022} 1842}
1023 1843
1024void inline_size 1844inline_speed void
1025evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1845evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1026{ 1846{
1027 if (!*flag) 1847 if (expect_true (*flag))
1848 return;
1849
1850 *flag = 1;
1851
1852 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1853
1854 pipe_write_skipped = 1;
1855
1856 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1857
1858 if (pipe_write_wanted)
1028 { 1859 {
1860 int old_errno;
1861
1862 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1863
1029 int old_errno = errno; /* save errno because write might clobber it */ 1864 old_errno = errno; /* save errno because write will clobber it */
1030
1031 *flag = 1;
1032 1865
1033#if EV_USE_EVENTFD 1866#if EV_USE_EVENTFD
1034 if (evfd >= 0) 1867 if (evfd >= 0)
1035 { 1868 {
1036 uint64_t counter = 1; 1869 uint64_t counter = 1;
1037 write (evfd, &counter, sizeof (uint64_t)); 1870 write (evfd, &counter, sizeof (uint64_t));
1038 } 1871 }
1039 else 1872 else
1040#endif 1873#endif
1874 {
1875 /* win32 people keep sending patches that change this write() to send() */
1876 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1877 /* so when you think this write should be a send instead, please find out */
1878 /* where your send() is from - it's definitely not the microsoft send, and */
1879 /* tell me. thank you. */
1880 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1881 /* check the ev documentation on how to use this flag */
1041 write (evpipe [1], &old_errno, 1); 1882 write (evpipe [1], &(evpipe [1]), 1);
1883 }
1042 1884
1043 errno = old_errno; 1885 errno = old_errno;
1044 } 1886 }
1045} 1887}
1046 1888
1889/* called whenever the libev signal pipe */
1890/* got some events (signal, async) */
1047static void 1891static void
1048pipecb (EV_P_ ev_io *iow, int revents) 1892pipecb (EV_P_ ev_io *iow, int revents)
1049{ 1893{
1894 int i;
1895
1896 if (revents & EV_READ)
1897 {
1050#if EV_USE_EVENTFD 1898#if EV_USE_EVENTFD
1051 if (evfd >= 0) 1899 if (evfd >= 0)
1052 { 1900 {
1053 uint64_t counter; 1901 uint64_t counter;
1054 read (evfd, &counter, sizeof (uint64_t)); 1902 read (evfd, &counter, sizeof (uint64_t));
1055 } 1903 }
1056 else 1904 else
1057#endif 1905#endif
1058 { 1906 {
1059 char dummy; 1907 char dummy;
1908 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1060 read (evpipe [0], &dummy, 1); 1909 read (evpipe [0], &dummy, 1);
1910 }
1911 }
1912
1913 pipe_write_skipped = 0;
1914
1915#if EV_SIGNAL_ENABLE
1916 if (sig_pending)
1061 } 1917 {
1918 sig_pending = 0;
1062 1919
1063 if (gotsig && ev_is_default_loop (EV_A)) 1920 for (i = EV_NSIG - 1; i--; )
1064 { 1921 if (expect_false (signals [i].pending))
1065 int signum;
1066 gotsig = 0;
1067
1068 for (signum = signalmax; signum--; )
1069 if (signals [signum].gotsig)
1070 ev_feed_signal_event (EV_A_ signum + 1); 1922 ev_feed_signal_event (EV_A_ i + 1);
1071 } 1923 }
1924#endif
1072 1925
1073#if EV_ASYNC_ENABLE 1926#if EV_ASYNC_ENABLE
1074 if (gotasync) 1927 if (async_pending)
1075 { 1928 {
1076 int i; 1929 async_pending = 0;
1077 gotasync = 0;
1078 1930
1079 for (i = asynccnt; i--; ) 1931 for (i = asynccnt; i--; )
1080 if (asyncs [i]->sent) 1932 if (asyncs [i]->sent)
1081 { 1933 {
1082 asyncs [i]->sent = 0; 1934 asyncs [i]->sent = 0;
… …
1086#endif 1938#endif
1087} 1939}
1088 1940
1089/*****************************************************************************/ 1941/*****************************************************************************/
1090 1942
1943void
1944ev_feed_signal (int signum)
1945{
1946#if EV_MULTIPLICITY
1947 EV_P = signals [signum - 1].loop;
1948
1949 if (!EV_A)
1950 return;
1951#endif
1952
1953 if (!ev_active (&pipe_w))
1954 return;
1955
1956 signals [signum - 1].pending = 1;
1957 evpipe_write (EV_A_ &sig_pending);
1958}
1959
1091static void 1960static void
1092ev_sighandler (int signum) 1961ev_sighandler (int signum)
1093{ 1962{
1094#if EV_MULTIPLICITY
1095 struct ev_loop *loop = &default_loop_struct;
1096#endif
1097
1098#if _WIN32 1963#ifdef _WIN32
1099 signal (signum, ev_sighandler); 1964 signal (signum, ev_sighandler);
1100#endif 1965#endif
1101 1966
1102 signals [signum - 1].gotsig = 1; 1967 ev_feed_signal (signum);
1103 evpipe_write (EV_A_ &gotsig);
1104} 1968}
1105 1969
1106void noinline 1970void noinline
1107ev_feed_signal_event (EV_P_ int signum) 1971ev_feed_signal_event (EV_P_ int signum)
1108{ 1972{
1109 WL w; 1973 WL w;
1110 1974
1975 if (expect_false (signum <= 0 || signum > EV_NSIG))
1976 return;
1977
1978 --signum;
1979
1111#if EV_MULTIPLICITY 1980#if EV_MULTIPLICITY
1112 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1981 /* it is permissible to try to feed a signal to the wrong loop */
1113#endif 1982 /* or, likely more useful, feeding a signal nobody is waiting for */
1114 1983
1115 --signum; 1984 if (expect_false (signals [signum].loop != EV_A))
1116
1117 if (signum < 0 || signum >= signalmax)
1118 return; 1985 return;
1986#endif
1119 1987
1120 signals [signum].gotsig = 0; 1988 signals [signum].pending = 0;
1121 1989
1122 for (w = signals [signum].head; w; w = w->next) 1990 for (w = signals [signum].head; w; w = w->next)
1123 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1991 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1124} 1992}
1125 1993
1994#if EV_USE_SIGNALFD
1995static void
1996sigfdcb (EV_P_ ev_io *iow, int revents)
1997{
1998 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1999
2000 for (;;)
2001 {
2002 ssize_t res = read (sigfd, si, sizeof (si));
2003
2004 /* not ISO-C, as res might be -1, but works with SuS */
2005 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2006 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2007
2008 if (res < (ssize_t)sizeof (si))
2009 break;
2010 }
2011}
2012#endif
2013
2014#endif
2015
1126/*****************************************************************************/ 2016/*****************************************************************************/
1127 2017
2018#if EV_CHILD_ENABLE
1128static WL childs [EV_PID_HASHSIZE]; 2019static WL childs [EV_PID_HASHSIZE];
1129
1130#ifndef _WIN32
1131 2020
1132static ev_signal childev; 2021static ev_signal childev;
1133 2022
1134#ifndef WIFCONTINUED 2023#ifndef WIFCONTINUED
1135# define WIFCONTINUED(status) 0 2024# define WIFCONTINUED(status) 0
1136#endif 2025#endif
1137 2026
1138void inline_speed 2027/* handle a single child status event */
2028inline_speed void
1139child_reap (EV_P_ int chain, int pid, int status) 2029child_reap (EV_P_ int chain, int pid, int status)
1140{ 2030{
1141 ev_child *w; 2031 ev_child *w;
1142 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2032 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1143 2033
1144 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2034 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1145 { 2035 {
1146 if ((w->pid == pid || !w->pid) 2036 if ((w->pid == pid || !w->pid)
1147 && (!traced || (w->flags & 1))) 2037 && (!traced || (w->flags & 1)))
1148 { 2038 {
1149 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2039 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1156 2046
1157#ifndef WCONTINUED 2047#ifndef WCONTINUED
1158# define WCONTINUED 0 2048# define WCONTINUED 0
1159#endif 2049#endif
1160 2050
2051/* called on sigchld etc., calls waitpid */
1161static void 2052static void
1162childcb (EV_P_ ev_signal *sw, int revents) 2053childcb (EV_P_ ev_signal *sw, int revents)
1163{ 2054{
1164 int pid, status; 2055 int pid, status;
1165 2056
… …
1173 /* make sure we are called again until all children have been reaped */ 2064 /* make sure we are called again until all children have been reaped */
1174 /* we need to do it this way so that the callback gets called before we continue */ 2065 /* we need to do it this way so that the callback gets called before we continue */
1175 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2066 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1176 2067
1177 child_reap (EV_A_ pid, pid, status); 2068 child_reap (EV_A_ pid, pid, status);
1178 if (EV_PID_HASHSIZE > 1) 2069 if ((EV_PID_HASHSIZE) > 1)
1179 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2070 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1180} 2071}
1181 2072
1182#endif 2073#endif
1183 2074
1184/*****************************************************************************/ 2075/*****************************************************************************/
1185 2076
2077#if EV_USE_IOCP
2078# include "ev_iocp.c"
2079#endif
1186#if EV_USE_PORT 2080#if EV_USE_PORT
1187# include "ev_port.c" 2081# include "ev_port.c"
1188#endif 2082#endif
1189#if EV_USE_KQUEUE 2083#if EV_USE_KQUEUE
1190# include "ev_kqueue.c" 2084# include "ev_kqueue.c"
… …
1197#endif 2091#endif
1198#if EV_USE_SELECT 2092#if EV_USE_SELECT
1199# include "ev_select.c" 2093# include "ev_select.c"
1200#endif 2094#endif
1201 2095
1202int 2096int ecb_cold
1203ev_version_major (void) 2097ev_version_major (void)
1204{ 2098{
1205 return EV_VERSION_MAJOR; 2099 return EV_VERSION_MAJOR;
1206} 2100}
1207 2101
1208int 2102int ecb_cold
1209ev_version_minor (void) 2103ev_version_minor (void)
1210{ 2104{
1211 return EV_VERSION_MINOR; 2105 return EV_VERSION_MINOR;
1212} 2106}
1213 2107
1214/* return true if we are running with elevated privileges and should ignore env variables */ 2108/* return true if we are running with elevated privileges and should ignore env variables */
1215int inline_size 2109int inline_size ecb_cold
1216enable_secure (void) 2110enable_secure (void)
1217{ 2111{
1218#ifdef _WIN32 2112#ifdef _WIN32
1219 return 0; 2113 return 0;
1220#else 2114#else
1221 return getuid () != geteuid () 2115 return getuid () != geteuid ()
1222 || getgid () != getegid (); 2116 || getgid () != getegid ();
1223#endif 2117#endif
1224} 2118}
1225 2119
1226unsigned int 2120unsigned int ecb_cold
1227ev_supported_backends (void) 2121ev_supported_backends (void)
1228{ 2122{
1229 unsigned int flags = 0; 2123 unsigned int flags = 0;
1230 2124
1231 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2125 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1235 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2129 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1236 2130
1237 return flags; 2131 return flags;
1238} 2132}
1239 2133
1240unsigned int 2134unsigned int ecb_cold
1241ev_recommended_backends (void) 2135ev_recommended_backends (void)
1242{ 2136{
1243 unsigned int flags = ev_supported_backends (); 2137 unsigned int flags = ev_supported_backends ();
1244 2138
1245#ifndef __NetBSD__ 2139#ifndef __NetBSD__
1246 /* kqueue is borked on everything but netbsd apparently */ 2140 /* kqueue is borked on everything but netbsd apparently */
1247 /* it usually doesn't work correctly on anything but sockets and pipes */ 2141 /* it usually doesn't work correctly on anything but sockets and pipes */
1248 flags &= ~EVBACKEND_KQUEUE; 2142 flags &= ~EVBACKEND_KQUEUE;
1249#endif 2143#endif
1250#ifdef __APPLE__ 2144#ifdef __APPLE__
1251 // flags &= ~EVBACKEND_KQUEUE; for documentation 2145 /* only select works correctly on that "unix-certified" platform */
1252 flags &= ~EVBACKEND_POLL; 2146 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
2147 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
2148#endif
2149#ifdef __FreeBSD__
2150 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1253#endif 2151#endif
1254 2152
1255 return flags; 2153 return flags;
1256} 2154}
1257 2155
1258unsigned int 2156unsigned int ecb_cold
1259ev_embeddable_backends (void) 2157ev_embeddable_backends (void)
1260{ 2158{
1261 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2159 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1262 2160
1263 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2161 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1264 /* please fix it and tell me how to detect the fix */ 2162 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1265 flags &= ~EVBACKEND_EPOLL; 2163 flags &= ~EVBACKEND_EPOLL;
1266 2164
1267 return flags; 2165 return flags;
1268} 2166}
1269 2167
1270unsigned int 2168unsigned int
1271ev_backend (EV_P) 2169ev_backend (EV_P)
1272{ 2170{
1273 return backend; 2171 return backend;
1274} 2172}
1275 2173
2174#if EV_FEATURE_API
1276unsigned int 2175unsigned int
1277ev_loop_count (EV_P) 2176ev_iteration (EV_P)
1278{ 2177{
1279 return loop_count; 2178 return loop_count;
2179}
2180
2181unsigned int
2182ev_depth (EV_P)
2183{
2184 return loop_depth;
1280} 2185}
1281 2186
1282void 2187void
1283ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2188ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1284{ 2189{
… …
1289ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2194ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1290{ 2195{
1291 timeout_blocktime = interval; 2196 timeout_blocktime = interval;
1292} 2197}
1293 2198
2199void
2200ev_set_userdata (EV_P_ void *data)
2201{
2202 userdata = data;
2203}
2204
2205void *
2206ev_userdata (EV_P)
2207{
2208 return userdata;
2209}
2210
2211void
2212ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
2213{
2214 invoke_cb = invoke_pending_cb;
2215}
2216
2217void
2218ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
2219{
2220 release_cb = release;
2221 acquire_cb = acquire;
2222}
2223#endif
2224
2225/* initialise a loop structure, must be zero-initialised */
1294static void noinline 2226static void noinline ecb_cold
1295loop_init (EV_P_ unsigned int flags) 2227loop_init (EV_P_ unsigned int flags)
1296{ 2228{
1297 if (!backend) 2229 if (!backend)
1298 { 2230 {
2231 origflags = flags;
2232
2233#if EV_USE_REALTIME
2234 if (!have_realtime)
2235 {
2236 struct timespec ts;
2237
2238 if (!clock_gettime (CLOCK_REALTIME, &ts))
2239 have_realtime = 1;
2240 }
2241#endif
2242
1299#if EV_USE_MONOTONIC 2243#if EV_USE_MONOTONIC
2244 if (!have_monotonic)
1300 { 2245 {
1301 struct timespec ts; 2246 struct timespec ts;
2247
1302 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2248 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1303 have_monotonic = 1; 2249 have_monotonic = 1;
1304 } 2250 }
1305#endif
1306
1307 ev_rt_now = ev_time ();
1308 mn_now = get_clock ();
1309 now_floor = mn_now;
1310 rtmn_diff = ev_rt_now - mn_now;
1311
1312 io_blocktime = 0.;
1313 timeout_blocktime = 0.;
1314 backend = 0;
1315 backend_fd = -1;
1316 gotasync = 0;
1317#if EV_USE_INOTIFY
1318 fs_fd = -2;
1319#endif 2251#endif
1320 2252
1321 /* pid check not overridable via env */ 2253 /* pid check not overridable via env */
1322#ifndef _WIN32 2254#ifndef _WIN32
1323 if (flags & EVFLAG_FORKCHECK) 2255 if (flags & EVFLAG_FORKCHECK)
… …
1327 if (!(flags & EVFLAG_NOENV) 2259 if (!(flags & EVFLAG_NOENV)
1328 && !enable_secure () 2260 && !enable_secure ()
1329 && getenv ("LIBEV_FLAGS")) 2261 && getenv ("LIBEV_FLAGS"))
1330 flags = atoi (getenv ("LIBEV_FLAGS")); 2262 flags = atoi (getenv ("LIBEV_FLAGS"));
1331 2263
1332 if (!(flags & 0x0000ffffU)) 2264 ev_rt_now = ev_time ();
2265 mn_now = get_clock ();
2266 now_floor = mn_now;
2267 rtmn_diff = ev_rt_now - mn_now;
2268#if EV_FEATURE_API
2269 invoke_cb = ev_invoke_pending;
2270#endif
2271
2272 io_blocktime = 0.;
2273 timeout_blocktime = 0.;
2274 backend = 0;
2275 backend_fd = -1;
2276 sig_pending = 0;
2277#if EV_ASYNC_ENABLE
2278 async_pending = 0;
2279#endif
2280 pipe_write_skipped = 0;
2281 pipe_write_wanted = 0;
2282#if EV_USE_INOTIFY
2283 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2284#endif
2285#if EV_USE_SIGNALFD
2286 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2287#endif
2288
2289 if (!(flags & EVBACKEND_MASK))
1333 flags |= ev_recommended_backends (); 2290 flags |= ev_recommended_backends ();
1334 2291
2292#if EV_USE_IOCP
2293 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2294#endif
1335#if EV_USE_PORT 2295#if EV_USE_PORT
1336 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2296 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1337#endif 2297#endif
1338#if EV_USE_KQUEUE 2298#if EV_USE_KQUEUE
1339 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2299 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1346#endif 2306#endif
1347#if EV_USE_SELECT 2307#if EV_USE_SELECT
1348 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2308 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1349#endif 2309#endif
1350 2310
2311 ev_prepare_init (&pending_w, pendingcb);
2312
2313#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1351 ev_init (&pipeev, pipecb); 2314 ev_init (&pipe_w, pipecb);
1352 ev_set_priority (&pipeev, EV_MAXPRI); 2315 ev_set_priority (&pipe_w, EV_MAXPRI);
2316#endif
1353 } 2317 }
1354} 2318}
1355 2319
1356static void noinline 2320/* free up a loop structure */
2321void ecb_cold
1357loop_destroy (EV_P) 2322ev_loop_destroy (EV_P)
1358{ 2323{
1359 int i; 2324 int i;
1360 2325
2326#if EV_MULTIPLICITY
2327 /* mimic free (0) */
2328 if (!EV_A)
2329 return;
2330#endif
2331
2332#if EV_CLEANUP_ENABLE
2333 /* queue cleanup watchers (and execute them) */
2334 if (expect_false (cleanupcnt))
2335 {
2336 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2337 EV_INVOKE_PENDING;
2338 }
2339#endif
2340
2341#if EV_CHILD_ENABLE
2342 if (ev_is_active (&childev))
2343 {
2344 ev_ref (EV_A); /* child watcher */
2345 ev_signal_stop (EV_A_ &childev);
2346 }
2347#endif
2348
1361 if (ev_is_active (&pipeev)) 2349 if (ev_is_active (&pipe_w))
1362 { 2350 {
1363 ev_ref (EV_A); /* signal watcher */ 2351 /*ev_ref (EV_A);*/
1364 ev_io_stop (EV_A_ &pipeev); 2352 /*ev_io_stop (EV_A_ &pipe_w);*/
1365 2353
1366#if EV_USE_EVENTFD 2354#if EV_USE_EVENTFD
1367 if (evfd >= 0) 2355 if (evfd >= 0)
1368 close (evfd); 2356 close (evfd);
1369#endif 2357#endif
1370 2358
1371 if (evpipe [0] >= 0) 2359 if (evpipe [0] >= 0)
1372 { 2360 {
1373 close (evpipe [0]); 2361 EV_WIN32_CLOSE_FD (evpipe [0]);
1374 close (evpipe [1]); 2362 EV_WIN32_CLOSE_FD (evpipe [1]);
1375 } 2363 }
1376 } 2364 }
2365
2366#if EV_USE_SIGNALFD
2367 if (ev_is_active (&sigfd_w))
2368 close (sigfd);
2369#endif
1377 2370
1378#if EV_USE_INOTIFY 2371#if EV_USE_INOTIFY
1379 if (fs_fd >= 0) 2372 if (fs_fd >= 0)
1380 close (fs_fd); 2373 close (fs_fd);
1381#endif 2374#endif
1382 2375
1383 if (backend_fd >= 0) 2376 if (backend_fd >= 0)
1384 close (backend_fd); 2377 close (backend_fd);
1385 2378
2379#if EV_USE_IOCP
2380 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2381#endif
1386#if EV_USE_PORT 2382#if EV_USE_PORT
1387 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2383 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1388#endif 2384#endif
1389#if EV_USE_KQUEUE 2385#if EV_USE_KQUEUE
1390 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2386 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1405#if EV_IDLE_ENABLE 2401#if EV_IDLE_ENABLE
1406 array_free (idle, [i]); 2402 array_free (idle, [i]);
1407#endif 2403#endif
1408 } 2404 }
1409 2405
1410 ev_free (anfds); anfdmax = 0; 2406 ev_free (anfds); anfds = 0; anfdmax = 0;
1411 2407
1412 /* have to use the microsoft-never-gets-it-right macro */ 2408 /* have to use the microsoft-never-gets-it-right macro */
2409 array_free (rfeed, EMPTY);
1413 array_free (fdchange, EMPTY); 2410 array_free (fdchange, EMPTY);
1414 array_free (timer, EMPTY); 2411 array_free (timer, EMPTY);
1415#if EV_PERIODIC_ENABLE 2412#if EV_PERIODIC_ENABLE
1416 array_free (periodic, EMPTY); 2413 array_free (periodic, EMPTY);
1417#endif 2414#endif
1418#if EV_FORK_ENABLE 2415#if EV_FORK_ENABLE
1419 array_free (fork, EMPTY); 2416 array_free (fork, EMPTY);
1420#endif 2417#endif
2418#if EV_CLEANUP_ENABLE
2419 array_free (cleanup, EMPTY);
2420#endif
1421 array_free (prepare, EMPTY); 2421 array_free (prepare, EMPTY);
1422 array_free (check, EMPTY); 2422 array_free (check, EMPTY);
1423#if EV_ASYNC_ENABLE 2423#if EV_ASYNC_ENABLE
1424 array_free (async, EMPTY); 2424 array_free (async, EMPTY);
1425#endif 2425#endif
1426 2426
1427 backend = 0; 2427 backend = 0;
2428
2429#if EV_MULTIPLICITY
2430 if (ev_is_default_loop (EV_A))
2431#endif
2432 ev_default_loop_ptr = 0;
2433#if EV_MULTIPLICITY
2434 else
2435 ev_free (EV_A);
2436#endif
1428} 2437}
1429 2438
1430#if EV_USE_INOTIFY 2439#if EV_USE_INOTIFY
1431void inline_size infy_fork (EV_P); 2440inline_size void infy_fork (EV_P);
1432#endif 2441#endif
1433 2442
1434void inline_size 2443inline_size void
1435loop_fork (EV_P) 2444loop_fork (EV_P)
1436{ 2445{
1437#if EV_USE_PORT 2446#if EV_USE_PORT
1438 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2447 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1439#endif 2448#endif
… …
1445#endif 2454#endif
1446#if EV_USE_INOTIFY 2455#if EV_USE_INOTIFY
1447 infy_fork (EV_A); 2456 infy_fork (EV_A);
1448#endif 2457#endif
1449 2458
1450 if (ev_is_active (&pipeev)) 2459 if (ev_is_active (&pipe_w))
1451 { 2460 {
1452 /* this "locks" the handlers against writing to the pipe */ 2461 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1453 /* while we modify the fd vars */
1454 gotsig = 1;
1455#if EV_ASYNC_ENABLE
1456 gotasync = 1;
1457#endif
1458 2462
1459 ev_ref (EV_A); 2463 ev_ref (EV_A);
1460 ev_io_stop (EV_A_ &pipeev); 2464 ev_io_stop (EV_A_ &pipe_w);
1461 2465
1462#if EV_USE_EVENTFD 2466#if EV_USE_EVENTFD
1463 if (evfd >= 0) 2467 if (evfd >= 0)
1464 close (evfd); 2468 close (evfd);
1465#endif 2469#endif
1466 2470
1467 if (evpipe [0] >= 0) 2471 if (evpipe [0] >= 0)
1468 { 2472 {
1469 close (evpipe [0]); 2473 EV_WIN32_CLOSE_FD (evpipe [0]);
1470 close (evpipe [1]); 2474 EV_WIN32_CLOSE_FD (evpipe [1]);
1471 } 2475 }
1472 2476
2477#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1473 evpipe_init (EV_A); 2478 evpipe_init (EV_A);
1474 /* now iterate over everything, in case we missed something */ 2479 /* now iterate over everything, in case we missed something */
1475 pipecb (EV_A_ &pipeev, EV_READ); 2480 pipecb (EV_A_ &pipe_w, EV_READ);
2481#endif
1476 } 2482 }
1477 2483
1478 postfork = 0; 2484 postfork = 0;
1479} 2485}
1480 2486
1481#if EV_MULTIPLICITY 2487#if EV_MULTIPLICITY
1482 2488
1483struct ev_loop * 2489struct ev_loop * ecb_cold
1484ev_loop_new (unsigned int flags) 2490ev_loop_new (unsigned int flags)
1485{ 2491{
1486 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2492 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1487 2493
1488 memset (loop, 0, sizeof (struct ev_loop)); 2494 memset (EV_A, 0, sizeof (struct ev_loop));
1489
1490 loop_init (EV_A_ flags); 2495 loop_init (EV_A_ flags);
1491 2496
1492 if (ev_backend (EV_A)) 2497 if (ev_backend (EV_A))
1493 return loop; 2498 return EV_A;
1494 2499
2500 ev_free (EV_A);
1495 return 0; 2501 return 0;
1496} 2502}
1497 2503
1498void 2504#endif /* multiplicity */
1499ev_loop_destroy (EV_P)
1500{
1501 loop_destroy (EV_A);
1502 ev_free (loop);
1503}
1504
1505void
1506ev_loop_fork (EV_P)
1507{
1508 postfork = 1; /* must be in line with ev_default_fork */
1509}
1510 2505
1511#if EV_VERIFY 2506#if EV_VERIFY
1512void noinline 2507static void noinline ecb_cold
1513verify_watcher (EV_P_ W w) 2508verify_watcher (EV_P_ W w)
1514{ 2509{
1515 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2510 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1516 2511
1517 if (w->pending) 2512 if (w->pending)
1518 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2513 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1519} 2514}
1520 2515
1521static void noinline 2516static void noinline ecb_cold
1522verify_heap (EV_P_ ANHE *heap, int N) 2517verify_heap (EV_P_ ANHE *heap, int N)
1523{ 2518{
1524 int i; 2519 int i;
1525 2520
1526 for (i = HEAP0; i < N + HEAP0; ++i) 2521 for (i = HEAP0; i < N + HEAP0; ++i)
1527 { 2522 {
1528 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 2523 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1529 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 2524 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1530 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 2525 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1531 2526
1532 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2527 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1533 } 2528 }
1534} 2529}
1535 2530
1536static void noinline 2531static void noinline ecb_cold
1537array_verify (EV_P_ W *ws, int cnt) 2532array_verify (EV_P_ W *ws, int cnt)
1538{ 2533{
1539 while (cnt--) 2534 while (cnt--)
1540 { 2535 {
1541 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2536 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1542 verify_watcher (EV_A_ ws [cnt]); 2537 verify_watcher (EV_A_ ws [cnt]);
1543 } 2538 }
1544} 2539}
1545#endif 2540#endif
1546 2541
1547void 2542#if EV_FEATURE_API
2543void ecb_cold
1548ev_loop_verify (EV_P) 2544ev_verify (EV_P)
1549{ 2545{
1550#if EV_VERIFY 2546#if EV_VERIFY
1551 int i; 2547 int i;
1552 WL w; 2548 WL w;
1553 2549
1554 assert (activecnt >= -1); 2550 assert (activecnt >= -1);
1555 2551
1556 assert (fdchangemax >= fdchangecnt); 2552 assert (fdchangemax >= fdchangecnt);
1557 for (i = 0; i < fdchangecnt; ++i) 2553 for (i = 0; i < fdchangecnt; ++i)
1558 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 2554 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1559 2555
1560 assert (anfdmax >= 0); 2556 assert (anfdmax >= 0);
1561 for (i = 0; i < anfdmax; ++i) 2557 for (i = 0; i < anfdmax; ++i)
1562 for (w = anfds [i].head; w; w = w->next) 2558 for (w = anfds [i].head; w; w = w->next)
1563 { 2559 {
1564 verify_watcher (EV_A_ (W)w); 2560 verify_watcher (EV_A_ (W)w);
1565 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 2561 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1566 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2562 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1567 } 2563 }
1568 2564
1569 assert (timermax >= timercnt); 2565 assert (timermax >= timercnt);
1570 verify_heap (EV_A_ timers, timercnt); 2566 verify_heap (EV_A_ timers, timercnt);
1571 2567
… …
1587#if EV_FORK_ENABLE 2583#if EV_FORK_ENABLE
1588 assert (forkmax >= forkcnt); 2584 assert (forkmax >= forkcnt);
1589 array_verify (EV_A_ (W *)forks, forkcnt); 2585 array_verify (EV_A_ (W *)forks, forkcnt);
1590#endif 2586#endif
1591 2587
2588#if EV_CLEANUP_ENABLE
2589 assert (cleanupmax >= cleanupcnt);
2590 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2591#endif
2592
1592#if EV_ASYNC_ENABLE 2593#if EV_ASYNC_ENABLE
1593 assert (asyncmax >= asynccnt); 2594 assert (asyncmax >= asynccnt);
1594 array_verify (EV_A_ (W *)asyncs, asynccnt); 2595 array_verify (EV_A_ (W *)asyncs, asynccnt);
1595#endif 2596#endif
1596 2597
2598#if EV_PREPARE_ENABLE
1597 assert (preparemax >= preparecnt); 2599 assert (preparemax >= preparecnt);
1598 array_verify (EV_A_ (W *)prepares, preparecnt); 2600 array_verify (EV_A_ (W *)prepares, preparecnt);
2601#endif
1599 2602
2603#if EV_CHECK_ENABLE
1600 assert (checkmax >= checkcnt); 2604 assert (checkmax >= checkcnt);
1601 array_verify (EV_A_ (W *)checks, checkcnt); 2605 array_verify (EV_A_ (W *)checks, checkcnt);
2606#endif
1602 2607
1603# if 0 2608# if 0
2609#if EV_CHILD_ENABLE
1604 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2610 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1605 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2611 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2612#endif
1606# endif 2613# endif
1607#endif 2614#endif
1608} 2615}
1609 2616#endif
1610#endif /* multiplicity */
1611 2617
1612#if EV_MULTIPLICITY 2618#if EV_MULTIPLICITY
1613struct ev_loop * 2619struct ev_loop * ecb_cold
1614ev_default_loop_init (unsigned int flags)
1615#else 2620#else
1616int 2621int
2622#endif
1617ev_default_loop (unsigned int flags) 2623ev_default_loop (unsigned int flags)
1618#endif
1619{ 2624{
1620 if (!ev_default_loop_ptr) 2625 if (!ev_default_loop_ptr)
1621 { 2626 {
1622#if EV_MULTIPLICITY 2627#if EV_MULTIPLICITY
1623 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2628 EV_P = ev_default_loop_ptr = &default_loop_struct;
1624#else 2629#else
1625 ev_default_loop_ptr = 1; 2630 ev_default_loop_ptr = 1;
1626#endif 2631#endif
1627 2632
1628 loop_init (EV_A_ flags); 2633 loop_init (EV_A_ flags);
1629 2634
1630 if (ev_backend (EV_A)) 2635 if (ev_backend (EV_A))
1631 { 2636 {
1632#ifndef _WIN32 2637#if EV_CHILD_ENABLE
1633 ev_signal_init (&childev, childcb, SIGCHLD); 2638 ev_signal_init (&childev, childcb, SIGCHLD);
1634 ev_set_priority (&childev, EV_MAXPRI); 2639 ev_set_priority (&childev, EV_MAXPRI);
1635 ev_signal_start (EV_A_ &childev); 2640 ev_signal_start (EV_A_ &childev);
1636 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2641 ev_unref (EV_A); /* child watcher should not keep loop alive */
1637#endif 2642#endif
… …
1642 2647
1643 return ev_default_loop_ptr; 2648 return ev_default_loop_ptr;
1644} 2649}
1645 2650
1646void 2651void
1647ev_default_destroy (void) 2652ev_loop_fork (EV_P)
1648{ 2653{
1649#if EV_MULTIPLICITY
1650 struct ev_loop *loop = ev_default_loop_ptr;
1651#endif
1652
1653#ifndef _WIN32
1654 ev_ref (EV_A); /* child watcher */
1655 ev_signal_stop (EV_A_ &childev);
1656#endif
1657
1658 loop_destroy (EV_A);
1659}
1660
1661void
1662ev_default_fork (void)
1663{
1664#if EV_MULTIPLICITY
1665 struct ev_loop *loop = ev_default_loop_ptr;
1666#endif
1667
1668 if (backend)
1669 postfork = 1; /* must be in line with ev_loop_fork */ 2654 postfork = 1; /* must be in line with ev_default_fork */
1670} 2655}
1671 2656
1672/*****************************************************************************/ 2657/*****************************************************************************/
1673 2658
1674void 2659void
1675ev_invoke (EV_P_ void *w, int revents) 2660ev_invoke (EV_P_ void *w, int revents)
1676{ 2661{
1677 EV_CB_INVOKE ((W)w, revents); 2662 EV_CB_INVOKE ((W)w, revents);
1678} 2663}
1679 2664
1680void inline_speed 2665unsigned int
1681call_pending (EV_P) 2666ev_pending_count (EV_P)
2667{
2668 int pri;
2669 unsigned int count = 0;
2670
2671 for (pri = NUMPRI; pri--; )
2672 count += pendingcnt [pri];
2673
2674 return count;
2675}
2676
2677void noinline
2678ev_invoke_pending (EV_P)
1682{ 2679{
1683 int pri; 2680 int pri;
1684 2681
1685 for (pri = NUMPRI; pri--; ) 2682 for (pri = NUMPRI; pri--; )
1686 while (pendingcnt [pri]) 2683 while (pendingcnt [pri])
1687 { 2684 {
1688 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2685 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1689 2686
1690 if (expect_true (p->w))
1691 {
1692 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1693
1694 p->w->pending = 0; 2687 p->w->pending = 0;
1695 EV_CB_INVOKE (p->w, p->events); 2688 EV_CB_INVOKE (p->w, p->events);
1696 EV_FREQUENT_CHECK; 2689 EV_FREQUENT_CHECK;
1697 }
1698 } 2690 }
1699} 2691}
1700 2692
1701#if EV_IDLE_ENABLE 2693#if EV_IDLE_ENABLE
1702void inline_size 2694/* make idle watchers pending. this handles the "call-idle */
2695/* only when higher priorities are idle" logic */
2696inline_size void
1703idle_reify (EV_P) 2697idle_reify (EV_P)
1704{ 2698{
1705 if (expect_false (idleall)) 2699 if (expect_false (idleall))
1706 { 2700 {
1707 int pri; 2701 int pri;
… …
1719 } 2713 }
1720 } 2714 }
1721} 2715}
1722#endif 2716#endif
1723 2717
1724void inline_size 2718/* make timers pending */
2719inline_size void
1725timers_reify (EV_P) 2720timers_reify (EV_P)
1726{ 2721{
1727 EV_FREQUENT_CHECK; 2722 EV_FREQUENT_CHECK;
1728 2723
1729 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2724 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1730 { 2725 {
1731 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2726 do
1732
1733 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1734
1735 /* first reschedule or stop timer */
1736 if (w->repeat)
1737 { 2727 {
2728 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2729
2730 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2731
2732 /* first reschedule or stop timer */
2733 if (w->repeat)
2734 {
1738 ev_at (w) += w->repeat; 2735 ev_at (w) += w->repeat;
1739 if (ev_at (w) < mn_now) 2736 if (ev_at (w) < mn_now)
1740 ev_at (w) = mn_now; 2737 ev_at (w) = mn_now;
1741 2738
1742 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2739 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1743 2740
1744 ANHE_at_cache (timers [HEAP0]); 2741 ANHE_at_cache (timers [HEAP0]);
1745 downheap (timers, timercnt, HEAP0); 2742 downheap (timers, timercnt, HEAP0);
2743 }
2744 else
2745 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2746
2747 EV_FREQUENT_CHECK;
2748 feed_reverse (EV_A_ (W)w);
1746 } 2749 }
1747 else 2750 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1748 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1749 2751
1750 EV_FREQUENT_CHECK; 2752 feed_reverse_done (EV_A_ EV_TIMER);
1751 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1752 } 2753 }
1753} 2754}
1754 2755
1755#if EV_PERIODIC_ENABLE 2756#if EV_PERIODIC_ENABLE
1756void inline_size 2757
2758static void noinline
2759periodic_recalc (EV_P_ ev_periodic *w)
2760{
2761 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2762 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2763
2764 /* the above almost always errs on the low side */
2765 while (at <= ev_rt_now)
2766 {
2767 ev_tstamp nat = at + w->interval;
2768
2769 /* when resolution fails us, we use ev_rt_now */
2770 if (expect_false (nat == at))
2771 {
2772 at = ev_rt_now;
2773 break;
2774 }
2775
2776 at = nat;
2777 }
2778
2779 ev_at (w) = at;
2780}
2781
2782/* make periodics pending */
2783inline_size void
1757periodics_reify (EV_P) 2784periodics_reify (EV_P)
1758{ 2785{
1759 EV_FREQUENT_CHECK; 2786 EV_FREQUENT_CHECK;
1760 2787
1761 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2788 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1762 { 2789 {
1763 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2790 int feed_count = 0;
1764 2791
1765 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2792 do
1766
1767 /* first reschedule or stop timer */
1768 if (w->reschedule_cb)
1769 { 2793 {
2794 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2795
2796 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2797
2798 /* first reschedule or stop timer */
2799 if (w->reschedule_cb)
2800 {
1770 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2801 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1771 2802
1772 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2803 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1773 2804
1774 ANHE_at_cache (periodics [HEAP0]); 2805 ANHE_at_cache (periodics [HEAP0]);
1775 downheap (periodics, periodiccnt, HEAP0); 2806 downheap (periodics, periodiccnt, HEAP0);
2807 }
2808 else if (w->interval)
2809 {
2810 periodic_recalc (EV_A_ w);
2811 ANHE_at_cache (periodics [HEAP0]);
2812 downheap (periodics, periodiccnt, HEAP0);
2813 }
2814 else
2815 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2816
2817 EV_FREQUENT_CHECK;
2818 feed_reverse (EV_A_ (W)w);
1776 } 2819 }
1777 else if (w->interval) 2820 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1778 {
1779 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1780 /* if next trigger time is not sufficiently in the future, put it there */
1781 /* this might happen because of floating point inexactness */
1782 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1783 {
1784 ev_at (w) += w->interval;
1785 2821
1786 /* if interval is unreasonably low we might still have a time in the past */
1787 /* so correct this. this will make the periodic very inexact, but the user */
1788 /* has effectively asked to get triggered more often than possible */
1789 if (ev_at (w) < ev_rt_now)
1790 ev_at (w) = ev_rt_now;
1791 }
1792
1793 ANHE_at_cache (periodics [HEAP0]);
1794 downheap (periodics, periodiccnt, HEAP0);
1795 }
1796 else
1797 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1798
1799 EV_FREQUENT_CHECK;
1800 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2822 feed_reverse_done (EV_A_ EV_PERIODIC);
1801 } 2823 }
1802} 2824}
1803 2825
2826/* simply recalculate all periodics */
2827/* TODO: maybe ensure that at least one event happens when jumping forward? */
1804static void noinline 2828static void noinline ecb_cold
1805periodics_reschedule (EV_P) 2829periodics_reschedule (EV_P)
1806{ 2830{
1807 int i; 2831 int i;
1808 2832
1809 /* adjust periodics after time jump */ 2833 /* adjust periodics after time jump */
… …
1812 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2836 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1813 2837
1814 if (w->reschedule_cb) 2838 if (w->reschedule_cb)
1815 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2839 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1816 else if (w->interval) 2840 else if (w->interval)
1817 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2841 periodic_recalc (EV_A_ w);
1818 2842
1819 ANHE_at_cache (periodics [i]); 2843 ANHE_at_cache (periodics [i]);
1820 } 2844 }
1821 2845
1822 reheap (periodics, periodiccnt); 2846 reheap (periodics, periodiccnt);
1823} 2847}
1824#endif 2848#endif
1825 2849
1826void inline_speed 2850/* adjust all timers by a given offset */
2851static void noinline ecb_cold
2852timers_reschedule (EV_P_ ev_tstamp adjust)
2853{
2854 int i;
2855
2856 for (i = 0; i < timercnt; ++i)
2857 {
2858 ANHE *he = timers + i + HEAP0;
2859 ANHE_w (*he)->at += adjust;
2860 ANHE_at_cache (*he);
2861 }
2862}
2863
2864/* fetch new monotonic and realtime times from the kernel */
2865/* also detect if there was a timejump, and act accordingly */
2866inline_speed void
1827time_update (EV_P_ ev_tstamp max_block) 2867time_update (EV_P_ ev_tstamp max_block)
1828{ 2868{
1829 int i;
1830
1831#if EV_USE_MONOTONIC 2869#if EV_USE_MONOTONIC
1832 if (expect_true (have_monotonic)) 2870 if (expect_true (have_monotonic))
1833 { 2871 {
2872 int i;
1834 ev_tstamp odiff = rtmn_diff; 2873 ev_tstamp odiff = rtmn_diff;
1835 2874
1836 mn_now = get_clock (); 2875 mn_now = get_clock ();
1837 2876
1838 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2877 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1854 * doesn't hurt either as we only do this on time-jumps or 2893 * doesn't hurt either as we only do this on time-jumps or
1855 * in the unlikely event of having been preempted here. 2894 * in the unlikely event of having been preempted here.
1856 */ 2895 */
1857 for (i = 4; --i; ) 2896 for (i = 4; --i; )
1858 { 2897 {
2898 ev_tstamp diff;
1859 rtmn_diff = ev_rt_now - mn_now; 2899 rtmn_diff = ev_rt_now - mn_now;
1860 2900
2901 diff = odiff - rtmn_diff;
2902
1861 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2903 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1862 return; /* all is well */ 2904 return; /* all is well */
1863 2905
1864 ev_rt_now = ev_time (); 2906 ev_rt_now = ev_time ();
1865 mn_now = get_clock (); 2907 mn_now = get_clock ();
1866 now_floor = mn_now; 2908 now_floor = mn_now;
1867 } 2909 }
1868 2910
2911 /* no timer adjustment, as the monotonic clock doesn't jump */
2912 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1869# if EV_PERIODIC_ENABLE 2913# if EV_PERIODIC_ENABLE
1870 periodics_reschedule (EV_A); 2914 periodics_reschedule (EV_A);
1871# endif 2915# endif
1872 /* no timer adjustment, as the monotonic clock doesn't jump */
1873 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1874 } 2916 }
1875 else 2917 else
1876#endif 2918#endif
1877 { 2919 {
1878 ev_rt_now = ev_time (); 2920 ev_rt_now = ev_time ();
1879 2921
1880 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2922 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1881 { 2923 {
2924 /* adjust timers. this is easy, as the offset is the same for all of them */
2925 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1882#if EV_PERIODIC_ENABLE 2926#if EV_PERIODIC_ENABLE
1883 periodics_reschedule (EV_A); 2927 periodics_reschedule (EV_A);
1884#endif 2928#endif
1885 /* adjust timers. this is easy, as the offset is the same for all of them */
1886 for (i = 0; i < timercnt; ++i)
1887 {
1888 ANHE *he = timers + i + HEAP0;
1889 ANHE_w (*he)->at += ev_rt_now - mn_now;
1890 ANHE_at_cache (*he);
1891 }
1892 } 2929 }
1893 2930
1894 mn_now = ev_rt_now; 2931 mn_now = ev_rt_now;
1895 } 2932 }
1896} 2933}
1897 2934
1898void 2935void
1899ev_ref (EV_P)
1900{
1901 ++activecnt;
1902}
1903
1904void
1905ev_unref (EV_P)
1906{
1907 --activecnt;
1908}
1909
1910static int loop_done;
1911
1912void
1913ev_loop (EV_P_ int flags) 2936ev_run (EV_P_ int flags)
1914{ 2937{
2938#if EV_FEATURE_API
2939 ++loop_depth;
2940#endif
2941
2942 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2943
1915 loop_done = EVUNLOOP_CANCEL; 2944 loop_done = EVBREAK_CANCEL;
1916 2945
1917 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2946 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1918 2947
1919 do 2948 do
1920 { 2949 {
1921#if EV_VERIFY >= 2 2950#if EV_VERIFY >= 2
1922 ev_loop_verify (EV_A); 2951 ev_verify (EV_A);
1923#endif 2952#endif
1924 2953
1925#ifndef _WIN32 2954#ifndef _WIN32
1926 if (expect_false (curpid)) /* penalise the forking check even more */ 2955 if (expect_false (curpid)) /* penalise the forking check even more */
1927 if (expect_false (getpid () != curpid)) 2956 if (expect_false (getpid () != curpid))
… …
1935 /* we might have forked, so queue fork handlers */ 2964 /* we might have forked, so queue fork handlers */
1936 if (expect_false (postfork)) 2965 if (expect_false (postfork))
1937 if (forkcnt) 2966 if (forkcnt)
1938 { 2967 {
1939 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2968 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1940 call_pending (EV_A); 2969 EV_INVOKE_PENDING;
1941 } 2970 }
1942#endif 2971#endif
1943 2972
2973#if EV_PREPARE_ENABLE
1944 /* queue prepare watchers (and execute them) */ 2974 /* queue prepare watchers (and execute them) */
1945 if (expect_false (preparecnt)) 2975 if (expect_false (preparecnt))
1946 { 2976 {
1947 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2977 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1948 call_pending (EV_A); 2978 EV_INVOKE_PENDING;
1949 } 2979 }
2980#endif
1950 2981
1951 if (expect_false (!activecnt)) 2982 if (expect_false (loop_done))
1952 break; 2983 break;
1953 2984
1954 /* we might have forked, so reify kernel state if necessary */ 2985 /* we might have forked, so reify kernel state if necessary */
1955 if (expect_false (postfork)) 2986 if (expect_false (postfork))
1956 loop_fork (EV_A); 2987 loop_fork (EV_A);
… …
1961 /* calculate blocking time */ 2992 /* calculate blocking time */
1962 { 2993 {
1963 ev_tstamp waittime = 0.; 2994 ev_tstamp waittime = 0.;
1964 ev_tstamp sleeptime = 0.; 2995 ev_tstamp sleeptime = 0.;
1965 2996
2997 /* remember old timestamp for io_blocktime calculation */
2998 ev_tstamp prev_mn_now = mn_now;
2999
3000 /* update time to cancel out callback processing overhead */
3001 time_update (EV_A_ 1e100);
3002
3003 /* from now on, we want a pipe-wake-up */
3004 pipe_write_wanted = 1;
3005
3006 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3007
1966 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3008 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1967 { 3009 {
1968 /* update time to cancel out callback processing overhead */
1969 time_update (EV_A_ 1e100);
1970
1971 waittime = MAX_BLOCKTIME; 3010 waittime = MAX_BLOCKTIME;
1972 3011
1973 if (timercnt) 3012 if (timercnt)
1974 { 3013 {
1975 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3014 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1976 if (waittime > to) waittime = to; 3015 if (waittime > to) waittime = to;
1977 } 3016 }
1978 3017
1979#if EV_PERIODIC_ENABLE 3018#if EV_PERIODIC_ENABLE
1980 if (periodiccnt) 3019 if (periodiccnt)
1981 { 3020 {
1982 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3021 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1983 if (waittime > to) waittime = to; 3022 if (waittime > to) waittime = to;
1984 } 3023 }
1985#endif 3024#endif
1986 3025
3026 /* don't let timeouts decrease the waittime below timeout_blocktime */
1987 if (expect_false (waittime < timeout_blocktime)) 3027 if (expect_false (waittime < timeout_blocktime))
1988 waittime = timeout_blocktime; 3028 waittime = timeout_blocktime;
1989 3029
1990 sleeptime = waittime - backend_fudge; 3030 /* at this point, we NEED to wait, so we have to ensure */
3031 /* to pass a minimum nonzero value to the backend */
3032 if (expect_false (waittime < backend_mintime))
3033 waittime = backend_mintime;
1991 3034
3035 /* extra check because io_blocktime is commonly 0 */
1992 if (expect_true (sleeptime > io_blocktime)) 3036 if (expect_false (io_blocktime))
1993 sleeptime = io_blocktime;
1994
1995 if (sleeptime)
1996 { 3037 {
3038 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3039
3040 if (sleeptime > waittime - backend_mintime)
3041 sleeptime = waittime - backend_mintime;
3042
3043 if (expect_true (sleeptime > 0.))
3044 {
1997 ev_sleep (sleeptime); 3045 ev_sleep (sleeptime);
1998 waittime -= sleeptime; 3046 waittime -= sleeptime;
3047 }
1999 } 3048 }
2000 } 3049 }
2001 3050
3051#if EV_FEATURE_API
2002 ++loop_count; 3052 ++loop_count;
3053#endif
3054 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2003 backend_poll (EV_A_ waittime); 3055 backend_poll (EV_A_ waittime);
3056 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3057
3058 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3059
3060 if (pipe_write_skipped)
3061 {
3062 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3063 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3064 }
3065
2004 3066
2005 /* update ev_rt_now, do magic */ 3067 /* update ev_rt_now, do magic */
2006 time_update (EV_A_ waittime + sleeptime); 3068 time_update (EV_A_ waittime + sleeptime);
2007 } 3069 }
2008 3070
… …
2015#if EV_IDLE_ENABLE 3077#if EV_IDLE_ENABLE
2016 /* queue idle watchers unless other events are pending */ 3078 /* queue idle watchers unless other events are pending */
2017 idle_reify (EV_A); 3079 idle_reify (EV_A);
2018#endif 3080#endif
2019 3081
3082#if EV_CHECK_ENABLE
2020 /* queue check watchers, to be executed first */ 3083 /* queue check watchers, to be executed first */
2021 if (expect_false (checkcnt)) 3084 if (expect_false (checkcnt))
2022 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3085 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3086#endif
2023 3087
2024 call_pending (EV_A); 3088 EV_INVOKE_PENDING;
2025 } 3089 }
2026 while (expect_true ( 3090 while (expect_true (
2027 activecnt 3091 activecnt
2028 && !loop_done 3092 && !loop_done
2029 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3093 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2030 )); 3094 ));
2031 3095
2032 if (loop_done == EVUNLOOP_ONE) 3096 if (loop_done == EVBREAK_ONE)
2033 loop_done = EVUNLOOP_CANCEL; 3097 loop_done = EVBREAK_CANCEL;
3098
3099#if EV_FEATURE_API
3100 --loop_depth;
3101#endif
2034} 3102}
2035 3103
2036void 3104void
2037ev_unloop (EV_P_ int how) 3105ev_break (EV_P_ int how)
2038{ 3106{
2039 loop_done = how; 3107 loop_done = how;
2040} 3108}
2041 3109
3110void
3111ev_ref (EV_P)
3112{
3113 ++activecnt;
3114}
3115
3116void
3117ev_unref (EV_P)
3118{
3119 --activecnt;
3120}
3121
3122void
3123ev_now_update (EV_P)
3124{
3125 time_update (EV_A_ 1e100);
3126}
3127
3128void
3129ev_suspend (EV_P)
3130{
3131 ev_now_update (EV_A);
3132}
3133
3134void
3135ev_resume (EV_P)
3136{
3137 ev_tstamp mn_prev = mn_now;
3138
3139 ev_now_update (EV_A);
3140 timers_reschedule (EV_A_ mn_now - mn_prev);
3141#if EV_PERIODIC_ENABLE
3142 /* TODO: really do this? */
3143 periodics_reschedule (EV_A);
3144#endif
3145}
3146
2042/*****************************************************************************/ 3147/*****************************************************************************/
3148/* singly-linked list management, used when the expected list length is short */
2043 3149
2044void inline_size 3150inline_size void
2045wlist_add (WL *head, WL elem) 3151wlist_add (WL *head, WL elem)
2046{ 3152{
2047 elem->next = *head; 3153 elem->next = *head;
2048 *head = elem; 3154 *head = elem;
2049} 3155}
2050 3156
2051void inline_size 3157inline_size void
2052wlist_del (WL *head, WL elem) 3158wlist_del (WL *head, WL elem)
2053{ 3159{
2054 while (*head) 3160 while (*head)
2055 { 3161 {
2056 if (*head == elem) 3162 if (expect_true (*head == elem))
2057 { 3163 {
2058 *head = elem->next; 3164 *head = elem->next;
2059 return; 3165 break;
2060 } 3166 }
2061 3167
2062 head = &(*head)->next; 3168 head = &(*head)->next;
2063 } 3169 }
2064} 3170}
2065 3171
2066void inline_speed 3172/* internal, faster, version of ev_clear_pending */
3173inline_speed void
2067clear_pending (EV_P_ W w) 3174clear_pending (EV_P_ W w)
2068{ 3175{
2069 if (w->pending) 3176 if (w->pending)
2070 { 3177 {
2071 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3178 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2072 w->pending = 0; 3179 w->pending = 0;
2073 } 3180 }
2074} 3181}
2075 3182
2076int 3183int
… …
2080 int pending = w_->pending; 3187 int pending = w_->pending;
2081 3188
2082 if (expect_true (pending)) 3189 if (expect_true (pending))
2083 { 3190 {
2084 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3191 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3192 p->w = (W)&pending_w;
2085 w_->pending = 0; 3193 w_->pending = 0;
2086 p->w = 0;
2087 return p->events; 3194 return p->events;
2088 } 3195 }
2089 else 3196 else
2090 return 0; 3197 return 0;
2091} 3198}
2092 3199
2093void inline_size 3200inline_size void
2094pri_adjust (EV_P_ W w) 3201pri_adjust (EV_P_ W w)
2095{ 3202{
2096 int pri = w->priority; 3203 int pri = ev_priority (w);
2097 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3204 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2098 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3205 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2099 w->priority = pri; 3206 ev_set_priority (w, pri);
2100} 3207}
2101 3208
2102void inline_speed 3209inline_speed void
2103ev_start (EV_P_ W w, int active) 3210ev_start (EV_P_ W w, int active)
2104{ 3211{
2105 pri_adjust (EV_A_ w); 3212 pri_adjust (EV_A_ w);
2106 w->active = active; 3213 w->active = active;
2107 ev_ref (EV_A); 3214 ev_ref (EV_A);
2108} 3215}
2109 3216
2110void inline_size 3217inline_size void
2111ev_stop (EV_P_ W w) 3218ev_stop (EV_P_ W w)
2112{ 3219{
2113 ev_unref (EV_A); 3220 ev_unref (EV_A);
2114 w->active = 0; 3221 w->active = 0;
2115} 3222}
… …
2122 int fd = w->fd; 3229 int fd = w->fd;
2123 3230
2124 if (expect_false (ev_is_active (w))) 3231 if (expect_false (ev_is_active (w)))
2125 return; 3232 return;
2126 3233
2127 assert (("ev_io_start called with negative fd", fd >= 0)); 3234 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3235 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2128 3236
2129 EV_FREQUENT_CHECK; 3237 EV_FREQUENT_CHECK;
2130 3238
2131 ev_start (EV_A_ (W)w, 1); 3239 ev_start (EV_A_ (W)w, 1);
2132 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 3240 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2133 wlist_add (&anfds[fd].head, (WL)w); 3241 wlist_add (&anfds[fd].head, (WL)w);
2134 3242
2135 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 3243 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2136 w->events &= ~EV_IOFDSET; 3244 w->events &= ~EV__IOFDSET;
2137 3245
2138 EV_FREQUENT_CHECK; 3246 EV_FREQUENT_CHECK;
2139} 3247}
2140 3248
2141void noinline 3249void noinline
… …
2143{ 3251{
2144 clear_pending (EV_A_ (W)w); 3252 clear_pending (EV_A_ (W)w);
2145 if (expect_false (!ev_is_active (w))) 3253 if (expect_false (!ev_is_active (w)))
2146 return; 3254 return;
2147 3255
2148 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3256 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2149 3257
2150 EV_FREQUENT_CHECK; 3258 EV_FREQUENT_CHECK;
2151 3259
2152 wlist_del (&anfds[w->fd].head, (WL)w); 3260 wlist_del (&anfds[w->fd].head, (WL)w);
2153 ev_stop (EV_A_ (W)w); 3261 ev_stop (EV_A_ (W)w);
2154 3262
2155 fd_change (EV_A_ w->fd, 1); 3263 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2156 3264
2157 EV_FREQUENT_CHECK; 3265 EV_FREQUENT_CHECK;
2158} 3266}
2159 3267
2160void noinline 3268void noinline
… …
2163 if (expect_false (ev_is_active (w))) 3271 if (expect_false (ev_is_active (w)))
2164 return; 3272 return;
2165 3273
2166 ev_at (w) += mn_now; 3274 ev_at (w) += mn_now;
2167 3275
2168 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 3276 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2169 3277
2170 EV_FREQUENT_CHECK; 3278 EV_FREQUENT_CHECK;
2171 3279
2172 ++timercnt; 3280 ++timercnt;
2173 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3281 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2176 ANHE_at_cache (timers [ev_active (w)]); 3284 ANHE_at_cache (timers [ev_active (w)]);
2177 upheap (timers, ev_active (w)); 3285 upheap (timers, ev_active (w));
2178 3286
2179 EV_FREQUENT_CHECK; 3287 EV_FREQUENT_CHECK;
2180 3288
2181 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3289 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2182} 3290}
2183 3291
2184void noinline 3292void noinline
2185ev_timer_stop (EV_P_ ev_timer *w) 3293ev_timer_stop (EV_P_ ev_timer *w)
2186{ 3294{
… …
2191 EV_FREQUENT_CHECK; 3299 EV_FREQUENT_CHECK;
2192 3300
2193 { 3301 {
2194 int active = ev_active (w); 3302 int active = ev_active (w);
2195 3303
2196 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 3304 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2197 3305
2198 --timercnt; 3306 --timercnt;
2199 3307
2200 if (expect_true (active < timercnt + HEAP0)) 3308 if (expect_true (active < timercnt + HEAP0))
2201 { 3309 {
2202 timers [active] = timers [timercnt + HEAP0]; 3310 timers [active] = timers [timercnt + HEAP0];
2203 adjustheap (timers, timercnt, active); 3311 adjustheap (timers, timercnt, active);
2204 } 3312 }
2205 } 3313 }
2206 3314
2207 EV_FREQUENT_CHECK;
2208
2209 ev_at (w) -= mn_now; 3315 ev_at (w) -= mn_now;
2210 3316
2211 ev_stop (EV_A_ (W)w); 3317 ev_stop (EV_A_ (W)w);
3318
3319 EV_FREQUENT_CHECK;
2212} 3320}
2213 3321
2214void noinline 3322void noinline
2215ev_timer_again (EV_P_ ev_timer *w) 3323ev_timer_again (EV_P_ ev_timer *w)
2216{ 3324{
2217 EV_FREQUENT_CHECK; 3325 EV_FREQUENT_CHECK;
3326
3327 clear_pending (EV_A_ (W)w);
2218 3328
2219 if (ev_is_active (w)) 3329 if (ev_is_active (w))
2220 { 3330 {
2221 if (w->repeat) 3331 if (w->repeat)
2222 { 3332 {
… …
2234 } 3344 }
2235 3345
2236 EV_FREQUENT_CHECK; 3346 EV_FREQUENT_CHECK;
2237} 3347}
2238 3348
3349ev_tstamp
3350ev_timer_remaining (EV_P_ ev_timer *w)
3351{
3352 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3353}
3354
2239#if EV_PERIODIC_ENABLE 3355#if EV_PERIODIC_ENABLE
2240void noinline 3356void noinline
2241ev_periodic_start (EV_P_ ev_periodic *w) 3357ev_periodic_start (EV_P_ ev_periodic *w)
2242{ 3358{
2243 if (expect_false (ev_is_active (w))) 3359 if (expect_false (ev_is_active (w)))
… …
2245 3361
2246 if (w->reschedule_cb) 3362 if (w->reschedule_cb)
2247 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3363 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2248 else if (w->interval) 3364 else if (w->interval)
2249 { 3365 {
2250 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 3366 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2251 /* this formula differs from the one in periodic_reify because we do not always round up */ 3367 periodic_recalc (EV_A_ w);
2252 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2253 } 3368 }
2254 else 3369 else
2255 ev_at (w) = w->offset; 3370 ev_at (w) = w->offset;
2256 3371
2257 EV_FREQUENT_CHECK; 3372 EV_FREQUENT_CHECK;
… …
2263 ANHE_at_cache (periodics [ev_active (w)]); 3378 ANHE_at_cache (periodics [ev_active (w)]);
2264 upheap (periodics, ev_active (w)); 3379 upheap (periodics, ev_active (w));
2265 3380
2266 EV_FREQUENT_CHECK; 3381 EV_FREQUENT_CHECK;
2267 3382
2268 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3383 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2269} 3384}
2270 3385
2271void noinline 3386void noinline
2272ev_periodic_stop (EV_P_ ev_periodic *w) 3387ev_periodic_stop (EV_P_ ev_periodic *w)
2273{ 3388{
… …
2278 EV_FREQUENT_CHECK; 3393 EV_FREQUENT_CHECK;
2279 3394
2280 { 3395 {
2281 int active = ev_active (w); 3396 int active = ev_active (w);
2282 3397
2283 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 3398 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2284 3399
2285 --periodiccnt; 3400 --periodiccnt;
2286 3401
2287 if (expect_true (active < periodiccnt + HEAP0)) 3402 if (expect_true (active < periodiccnt + HEAP0))
2288 { 3403 {
2289 periodics [active] = periodics [periodiccnt + HEAP0]; 3404 periodics [active] = periodics [periodiccnt + HEAP0];
2290 adjustheap (periodics, periodiccnt, active); 3405 adjustheap (periodics, periodiccnt, active);
2291 } 3406 }
2292 } 3407 }
2293 3408
2294 EV_FREQUENT_CHECK;
2295
2296 ev_stop (EV_A_ (W)w); 3409 ev_stop (EV_A_ (W)w);
3410
3411 EV_FREQUENT_CHECK;
2297} 3412}
2298 3413
2299void noinline 3414void noinline
2300ev_periodic_again (EV_P_ ev_periodic *w) 3415ev_periodic_again (EV_P_ ev_periodic *w)
2301{ 3416{
… …
2307 3422
2308#ifndef SA_RESTART 3423#ifndef SA_RESTART
2309# define SA_RESTART 0 3424# define SA_RESTART 0
2310#endif 3425#endif
2311 3426
3427#if EV_SIGNAL_ENABLE
3428
2312void noinline 3429void noinline
2313ev_signal_start (EV_P_ ev_signal *w) 3430ev_signal_start (EV_P_ ev_signal *w)
2314{ 3431{
2315#if EV_MULTIPLICITY
2316 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2317#endif
2318 if (expect_false (ev_is_active (w))) 3432 if (expect_false (ev_is_active (w)))
2319 return; 3433 return;
2320 3434
2321 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3435 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2322 3436
2323 evpipe_init (EV_A); 3437#if EV_MULTIPLICITY
3438 assert (("libev: a signal must not be attached to two different loops",
3439 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2324 3440
2325 EV_FREQUENT_CHECK; 3441 signals [w->signum - 1].loop = EV_A;
3442#endif
2326 3443
3444 EV_FREQUENT_CHECK;
3445
3446#if EV_USE_SIGNALFD
3447 if (sigfd == -2)
2327 { 3448 {
2328#ifndef _WIN32 3449 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2329 sigset_t full, prev; 3450 if (sigfd < 0 && errno == EINVAL)
2330 sigfillset (&full); 3451 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2331 sigprocmask (SIG_SETMASK, &full, &prev);
2332#endif
2333 3452
2334 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3453 if (sigfd >= 0)
3454 {
3455 fd_intern (sigfd); /* doing it twice will not hurt */
2335 3456
2336#ifndef _WIN32 3457 sigemptyset (&sigfd_set);
2337 sigprocmask (SIG_SETMASK, &prev, 0); 3458
2338#endif 3459 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3460 ev_set_priority (&sigfd_w, EV_MAXPRI);
3461 ev_io_start (EV_A_ &sigfd_w);
3462 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3463 }
2339 } 3464 }
3465
3466 if (sigfd >= 0)
3467 {
3468 /* TODO: check .head */
3469 sigaddset (&sigfd_set, w->signum);
3470 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3471
3472 signalfd (sigfd, &sigfd_set, 0);
3473 }
3474#endif
2340 3475
2341 ev_start (EV_A_ (W)w, 1); 3476 ev_start (EV_A_ (W)w, 1);
2342 wlist_add (&signals [w->signum - 1].head, (WL)w); 3477 wlist_add (&signals [w->signum - 1].head, (WL)w);
2343 3478
2344 if (!((WL)w)->next) 3479 if (!((WL)w)->next)
3480# if EV_USE_SIGNALFD
3481 if (sigfd < 0) /*TODO*/
3482# endif
2345 { 3483 {
2346#if _WIN32 3484# ifdef _WIN32
3485 evpipe_init (EV_A);
3486
2347 signal (w->signum, ev_sighandler); 3487 signal (w->signum, ev_sighandler);
2348#else 3488# else
2349 struct sigaction sa; 3489 struct sigaction sa;
3490
3491 evpipe_init (EV_A);
3492
2350 sa.sa_handler = ev_sighandler; 3493 sa.sa_handler = ev_sighandler;
2351 sigfillset (&sa.sa_mask); 3494 sigfillset (&sa.sa_mask);
2352 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3495 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2353 sigaction (w->signum, &sa, 0); 3496 sigaction (w->signum, &sa, 0);
3497
3498 if (origflags & EVFLAG_NOSIGMASK)
3499 {
3500 sigemptyset (&sa.sa_mask);
3501 sigaddset (&sa.sa_mask, w->signum);
3502 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3503 }
2354#endif 3504#endif
2355 } 3505 }
2356 3506
2357 EV_FREQUENT_CHECK; 3507 EV_FREQUENT_CHECK;
2358} 3508}
2359 3509
2360void noinline 3510void noinline
… …
2368 3518
2369 wlist_del (&signals [w->signum - 1].head, (WL)w); 3519 wlist_del (&signals [w->signum - 1].head, (WL)w);
2370 ev_stop (EV_A_ (W)w); 3520 ev_stop (EV_A_ (W)w);
2371 3521
2372 if (!signals [w->signum - 1].head) 3522 if (!signals [w->signum - 1].head)
3523 {
3524#if EV_MULTIPLICITY
3525 signals [w->signum - 1].loop = 0; /* unattach from signal */
3526#endif
3527#if EV_USE_SIGNALFD
3528 if (sigfd >= 0)
3529 {
3530 sigset_t ss;
3531
3532 sigemptyset (&ss);
3533 sigaddset (&ss, w->signum);
3534 sigdelset (&sigfd_set, w->signum);
3535
3536 signalfd (sigfd, &sigfd_set, 0);
3537 sigprocmask (SIG_UNBLOCK, &ss, 0);
3538 }
3539 else
3540#endif
2373 signal (w->signum, SIG_DFL); 3541 signal (w->signum, SIG_DFL);
3542 }
2374 3543
2375 EV_FREQUENT_CHECK; 3544 EV_FREQUENT_CHECK;
2376} 3545}
3546
3547#endif
3548
3549#if EV_CHILD_ENABLE
2377 3550
2378void 3551void
2379ev_child_start (EV_P_ ev_child *w) 3552ev_child_start (EV_P_ ev_child *w)
2380{ 3553{
2381#if EV_MULTIPLICITY 3554#if EV_MULTIPLICITY
2382 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3555 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2383#endif 3556#endif
2384 if (expect_false (ev_is_active (w))) 3557 if (expect_false (ev_is_active (w)))
2385 return; 3558 return;
2386 3559
2387 EV_FREQUENT_CHECK; 3560 EV_FREQUENT_CHECK;
2388 3561
2389 ev_start (EV_A_ (W)w, 1); 3562 ev_start (EV_A_ (W)w, 1);
2390 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3563 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2391 3564
2392 EV_FREQUENT_CHECK; 3565 EV_FREQUENT_CHECK;
2393} 3566}
2394 3567
2395void 3568void
… …
2399 if (expect_false (!ev_is_active (w))) 3572 if (expect_false (!ev_is_active (w)))
2400 return; 3573 return;
2401 3574
2402 EV_FREQUENT_CHECK; 3575 EV_FREQUENT_CHECK;
2403 3576
2404 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3577 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2405 ev_stop (EV_A_ (W)w); 3578 ev_stop (EV_A_ (W)w);
2406 3579
2407 EV_FREQUENT_CHECK; 3580 EV_FREQUENT_CHECK;
2408} 3581}
3582
3583#endif
2409 3584
2410#if EV_STAT_ENABLE 3585#if EV_STAT_ENABLE
2411 3586
2412# ifdef _WIN32 3587# ifdef _WIN32
2413# undef lstat 3588# undef lstat
2414# define lstat(a,b) _stati64 (a,b) 3589# define lstat(a,b) _stati64 (a,b)
2415# endif 3590# endif
2416 3591
2417#define DEF_STAT_INTERVAL 5.0074891 3592#define DEF_STAT_INTERVAL 5.0074891
3593#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2418#define MIN_STAT_INTERVAL 0.1074891 3594#define MIN_STAT_INTERVAL 0.1074891
2419 3595
2420static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3596static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2421 3597
2422#if EV_USE_INOTIFY 3598#if EV_USE_INOTIFY
2423# define EV_INOTIFY_BUFSIZE 8192 3599
3600/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3601# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2424 3602
2425static void noinline 3603static void noinline
2426infy_add (EV_P_ ev_stat *w) 3604infy_add (EV_P_ ev_stat *w)
2427{ 3605{
2428 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); 3606 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);
2429 3607
2430 if (w->wd < 0) 3608 if (w->wd >= 0)
3609 {
3610 struct statfs sfs;
3611
3612 /* now local changes will be tracked by inotify, but remote changes won't */
3613 /* unless the filesystem is known to be local, we therefore still poll */
3614 /* also do poll on <2.6.25, but with normal frequency */
3615
3616 if (!fs_2625)
3617 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3618 else if (!statfs (w->path, &sfs)
3619 && (sfs.f_type == 0x1373 /* devfs */
3620 || sfs.f_type == 0xEF53 /* ext2/3 */
3621 || sfs.f_type == 0x3153464a /* jfs */
3622 || sfs.f_type == 0x52654973 /* reiser3 */
3623 || sfs.f_type == 0x01021994 /* tempfs */
3624 || sfs.f_type == 0x58465342 /* xfs */))
3625 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3626 else
3627 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2431 { 3628 }
2432 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3629 else
3630 {
3631 /* can't use inotify, continue to stat */
3632 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2433 3633
2434 /* monitor some parent directory for speedup hints */ 3634 /* if path is not there, monitor some parent directory for speedup hints */
2435 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3635 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2436 /* but an efficiency issue only */ 3636 /* but an efficiency issue only */
2437 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3637 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2438 { 3638 {
2439 char path [4096]; 3639 char path [4096];
2440 strcpy (path, w->path); 3640 strcpy (path, w->path);
… …
2444 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3644 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2445 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3645 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2446 3646
2447 char *pend = strrchr (path, '/'); 3647 char *pend = strrchr (path, '/');
2448 3648
2449 if (!pend) 3649 if (!pend || pend == path)
2450 break; /* whoops, no '/', complain to your admin */ 3650 break;
2451 3651
2452 *pend = 0; 3652 *pend = 0;
2453 w->wd = inotify_add_watch (fs_fd, path, mask); 3653 w->wd = inotify_add_watch (fs_fd, path, mask);
2454 } 3654 }
2455 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3655 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2456 } 3656 }
2457 } 3657 }
2458 else
2459 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2460 3658
2461 if (w->wd >= 0) 3659 if (w->wd >= 0)
2462 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3660 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3661
3662 /* now re-arm timer, if required */
3663 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3664 ev_timer_again (EV_A_ &w->timer);
3665 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2463} 3666}
2464 3667
2465static void noinline 3668static void noinline
2466infy_del (EV_P_ ev_stat *w) 3669infy_del (EV_P_ ev_stat *w)
2467{ 3670{
… …
2470 3673
2471 if (wd < 0) 3674 if (wd < 0)
2472 return; 3675 return;
2473 3676
2474 w->wd = -2; 3677 w->wd = -2;
2475 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3678 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2476 wlist_del (&fs_hash [slot].head, (WL)w); 3679 wlist_del (&fs_hash [slot].head, (WL)w);
2477 3680
2478 /* remove this watcher, if others are watching it, they will rearm */ 3681 /* remove this watcher, if others are watching it, they will rearm */
2479 inotify_rm_watch (fs_fd, wd); 3682 inotify_rm_watch (fs_fd, wd);
2480} 3683}
2481 3684
2482static void noinline 3685static void noinline
2483infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3686infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2484{ 3687{
2485 if (slot < 0) 3688 if (slot < 0)
2486 /* overflow, need to check for all hahs slots */ 3689 /* overflow, need to check for all hash slots */
2487 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3690 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2488 infy_wd (EV_A_ slot, wd, ev); 3691 infy_wd (EV_A_ slot, wd, ev);
2489 else 3692 else
2490 { 3693 {
2491 WL w_; 3694 WL w_;
2492 3695
2493 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3696 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2494 { 3697 {
2495 ev_stat *w = (ev_stat *)w_; 3698 ev_stat *w = (ev_stat *)w_;
2496 w_ = w_->next; /* lets us remove this watcher and all before it */ 3699 w_ = w_->next; /* lets us remove this watcher and all before it */
2497 3700
2498 if (w->wd == wd || wd == -1) 3701 if (w->wd == wd || wd == -1)
2499 { 3702 {
2500 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3703 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2501 { 3704 {
3705 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2502 w->wd = -1; 3706 w->wd = -1;
2503 infy_add (EV_A_ w); /* re-add, no matter what */ 3707 infy_add (EV_A_ w); /* re-add, no matter what */
2504 } 3708 }
2505 3709
2506 stat_timer_cb (EV_A_ &w->timer, 0); 3710 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2511 3715
2512static void 3716static void
2513infy_cb (EV_P_ ev_io *w, int revents) 3717infy_cb (EV_P_ ev_io *w, int revents)
2514{ 3718{
2515 char buf [EV_INOTIFY_BUFSIZE]; 3719 char buf [EV_INOTIFY_BUFSIZE];
2516 struct inotify_event *ev = (struct inotify_event *)buf;
2517 int ofs; 3720 int ofs;
2518 int len = read (fs_fd, buf, sizeof (buf)); 3721 int len = read (fs_fd, buf, sizeof (buf));
2519 3722
2520 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3723 for (ofs = 0; ofs < len; )
3724 {
3725 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2521 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3726 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3727 ofs += sizeof (struct inotify_event) + ev->len;
3728 }
2522} 3729}
2523 3730
2524void inline_size 3731inline_size void ecb_cold
3732ev_check_2625 (EV_P)
3733{
3734 /* kernels < 2.6.25 are borked
3735 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3736 */
3737 if (ev_linux_version () < 0x020619)
3738 return;
3739
3740 fs_2625 = 1;
3741}
3742
3743inline_size int
3744infy_newfd (void)
3745{
3746#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3747 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3748 if (fd >= 0)
3749 return fd;
3750#endif
3751 return inotify_init ();
3752}
3753
3754inline_size void
2525infy_init (EV_P) 3755infy_init (EV_P)
2526{ 3756{
2527 if (fs_fd != -2) 3757 if (fs_fd != -2)
2528 return; 3758 return;
2529 3759
3760 fs_fd = -1;
3761
3762 ev_check_2625 (EV_A);
3763
2530 fs_fd = inotify_init (); 3764 fs_fd = infy_newfd ();
2531 3765
2532 if (fs_fd >= 0) 3766 if (fs_fd >= 0)
2533 { 3767 {
3768 fd_intern (fs_fd);
2534 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3769 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2535 ev_set_priority (&fs_w, EV_MAXPRI); 3770 ev_set_priority (&fs_w, EV_MAXPRI);
2536 ev_io_start (EV_A_ &fs_w); 3771 ev_io_start (EV_A_ &fs_w);
3772 ev_unref (EV_A);
2537 } 3773 }
2538} 3774}
2539 3775
2540void inline_size 3776inline_size void
2541infy_fork (EV_P) 3777infy_fork (EV_P)
2542{ 3778{
2543 int slot; 3779 int slot;
2544 3780
2545 if (fs_fd < 0) 3781 if (fs_fd < 0)
2546 return; 3782 return;
2547 3783
3784 ev_ref (EV_A);
3785 ev_io_stop (EV_A_ &fs_w);
2548 close (fs_fd); 3786 close (fs_fd);
2549 fs_fd = inotify_init (); 3787 fs_fd = infy_newfd ();
2550 3788
3789 if (fs_fd >= 0)
3790 {
3791 fd_intern (fs_fd);
3792 ev_io_set (&fs_w, fs_fd, EV_READ);
3793 ev_io_start (EV_A_ &fs_w);
3794 ev_unref (EV_A);
3795 }
3796
2551 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3797 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2552 { 3798 {
2553 WL w_ = fs_hash [slot].head; 3799 WL w_ = fs_hash [slot].head;
2554 fs_hash [slot].head = 0; 3800 fs_hash [slot].head = 0;
2555 3801
2556 while (w_) 3802 while (w_)
… …
2561 w->wd = -1; 3807 w->wd = -1;
2562 3808
2563 if (fs_fd >= 0) 3809 if (fs_fd >= 0)
2564 infy_add (EV_A_ w); /* re-add, no matter what */ 3810 infy_add (EV_A_ w); /* re-add, no matter what */
2565 else 3811 else
3812 {
3813 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3814 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2566 ev_timer_start (EV_A_ &w->timer); 3815 ev_timer_again (EV_A_ &w->timer);
3816 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3817 }
2567 } 3818 }
2568
2569 } 3819 }
2570} 3820}
2571 3821
3822#endif
3823
3824#ifdef _WIN32
3825# define EV_LSTAT(p,b) _stati64 (p, b)
3826#else
3827# define EV_LSTAT(p,b) lstat (p, b)
2572#endif 3828#endif
2573 3829
2574void 3830void
2575ev_stat_stat (EV_P_ ev_stat *w) 3831ev_stat_stat (EV_P_ ev_stat *w)
2576{ 3832{
… …
2583static void noinline 3839static void noinline
2584stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3840stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2585{ 3841{
2586 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3842 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2587 3843
2588 /* we copy this here each the time so that */ 3844 ev_statdata prev = w->attr;
2589 /* prev has the old value when the callback gets invoked */
2590 w->prev = w->attr;
2591 ev_stat_stat (EV_A_ w); 3845 ev_stat_stat (EV_A_ w);
2592 3846
2593 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3847 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2594 if ( 3848 if (
2595 w->prev.st_dev != w->attr.st_dev 3849 prev.st_dev != w->attr.st_dev
2596 || w->prev.st_ino != w->attr.st_ino 3850 || prev.st_ino != w->attr.st_ino
2597 || w->prev.st_mode != w->attr.st_mode 3851 || prev.st_mode != w->attr.st_mode
2598 || w->prev.st_nlink != w->attr.st_nlink 3852 || prev.st_nlink != w->attr.st_nlink
2599 || w->prev.st_uid != w->attr.st_uid 3853 || prev.st_uid != w->attr.st_uid
2600 || w->prev.st_gid != w->attr.st_gid 3854 || prev.st_gid != w->attr.st_gid
2601 || w->prev.st_rdev != w->attr.st_rdev 3855 || prev.st_rdev != w->attr.st_rdev
2602 || w->prev.st_size != w->attr.st_size 3856 || prev.st_size != w->attr.st_size
2603 || w->prev.st_atime != w->attr.st_atime 3857 || prev.st_atime != w->attr.st_atime
2604 || w->prev.st_mtime != w->attr.st_mtime 3858 || prev.st_mtime != w->attr.st_mtime
2605 || w->prev.st_ctime != w->attr.st_ctime 3859 || prev.st_ctime != w->attr.st_ctime
2606 ) { 3860 ) {
3861 /* we only update w->prev on actual differences */
3862 /* in case we test more often than invoke the callback, */
3863 /* to ensure that prev is always different to attr */
3864 w->prev = prev;
3865
2607 #if EV_USE_INOTIFY 3866 #if EV_USE_INOTIFY
3867 if (fs_fd >= 0)
3868 {
2608 infy_del (EV_A_ w); 3869 infy_del (EV_A_ w);
2609 infy_add (EV_A_ w); 3870 infy_add (EV_A_ w);
2610 ev_stat_stat (EV_A_ w); /* avoid race... */ 3871 ev_stat_stat (EV_A_ w); /* avoid race... */
3872 }
2611 #endif 3873 #endif
2612 3874
2613 ev_feed_event (EV_A_ w, EV_STAT); 3875 ev_feed_event (EV_A_ w, EV_STAT);
2614 } 3876 }
2615} 3877}
… …
2618ev_stat_start (EV_P_ ev_stat *w) 3880ev_stat_start (EV_P_ ev_stat *w)
2619{ 3881{
2620 if (expect_false (ev_is_active (w))) 3882 if (expect_false (ev_is_active (w)))
2621 return; 3883 return;
2622 3884
2623 /* since we use memcmp, we need to clear any padding data etc. */
2624 memset (&w->prev, 0, sizeof (ev_statdata));
2625 memset (&w->attr, 0, sizeof (ev_statdata));
2626
2627 ev_stat_stat (EV_A_ w); 3885 ev_stat_stat (EV_A_ w);
2628 3886
3887 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2629 if (w->interval < MIN_STAT_INTERVAL) 3888 w->interval = MIN_STAT_INTERVAL;
2630 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2631 3889
2632 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3890 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2633 ev_set_priority (&w->timer, ev_priority (w)); 3891 ev_set_priority (&w->timer, ev_priority (w));
2634 3892
2635#if EV_USE_INOTIFY 3893#if EV_USE_INOTIFY
2636 infy_init (EV_A); 3894 infy_init (EV_A);
2637 3895
2638 if (fs_fd >= 0) 3896 if (fs_fd >= 0)
2639 infy_add (EV_A_ w); 3897 infy_add (EV_A_ w);
2640 else 3898 else
2641#endif 3899#endif
3900 {
2642 ev_timer_start (EV_A_ &w->timer); 3901 ev_timer_again (EV_A_ &w->timer);
3902 ev_unref (EV_A);
3903 }
2643 3904
2644 ev_start (EV_A_ (W)w, 1); 3905 ev_start (EV_A_ (W)w, 1);
2645 3906
2646 EV_FREQUENT_CHECK; 3907 EV_FREQUENT_CHECK;
2647} 3908}
… …
2656 EV_FREQUENT_CHECK; 3917 EV_FREQUENT_CHECK;
2657 3918
2658#if EV_USE_INOTIFY 3919#if EV_USE_INOTIFY
2659 infy_del (EV_A_ w); 3920 infy_del (EV_A_ w);
2660#endif 3921#endif
3922
3923 if (ev_is_active (&w->timer))
3924 {
3925 ev_ref (EV_A);
2661 ev_timer_stop (EV_A_ &w->timer); 3926 ev_timer_stop (EV_A_ &w->timer);
3927 }
2662 3928
2663 ev_stop (EV_A_ (W)w); 3929 ev_stop (EV_A_ (W)w);
2664 3930
2665 EV_FREQUENT_CHECK; 3931 EV_FREQUENT_CHECK;
2666} 3932}
… …
2711 3977
2712 EV_FREQUENT_CHECK; 3978 EV_FREQUENT_CHECK;
2713} 3979}
2714#endif 3980#endif
2715 3981
3982#if EV_PREPARE_ENABLE
2716void 3983void
2717ev_prepare_start (EV_P_ ev_prepare *w) 3984ev_prepare_start (EV_P_ ev_prepare *w)
2718{ 3985{
2719 if (expect_false (ev_is_active (w))) 3986 if (expect_false (ev_is_active (w)))
2720 return; 3987 return;
… …
2746 4013
2747 ev_stop (EV_A_ (W)w); 4014 ev_stop (EV_A_ (W)w);
2748 4015
2749 EV_FREQUENT_CHECK; 4016 EV_FREQUENT_CHECK;
2750} 4017}
4018#endif
2751 4019
4020#if EV_CHECK_ENABLE
2752void 4021void
2753ev_check_start (EV_P_ ev_check *w) 4022ev_check_start (EV_P_ ev_check *w)
2754{ 4023{
2755 if (expect_false (ev_is_active (w))) 4024 if (expect_false (ev_is_active (w)))
2756 return; 4025 return;
… …
2782 4051
2783 ev_stop (EV_A_ (W)w); 4052 ev_stop (EV_A_ (W)w);
2784 4053
2785 EV_FREQUENT_CHECK; 4054 EV_FREQUENT_CHECK;
2786} 4055}
4056#endif
2787 4057
2788#if EV_EMBED_ENABLE 4058#if EV_EMBED_ENABLE
2789void noinline 4059void noinline
2790ev_embed_sweep (EV_P_ ev_embed *w) 4060ev_embed_sweep (EV_P_ ev_embed *w)
2791{ 4061{
2792 ev_loop (w->other, EVLOOP_NONBLOCK); 4062 ev_run (w->other, EVRUN_NOWAIT);
2793} 4063}
2794 4064
2795static void 4065static void
2796embed_io_cb (EV_P_ ev_io *io, int revents) 4066embed_io_cb (EV_P_ ev_io *io, int revents)
2797{ 4067{
2798 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4068 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2799 4069
2800 if (ev_cb (w)) 4070 if (ev_cb (w))
2801 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4071 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2802 else 4072 else
2803 ev_loop (w->other, EVLOOP_NONBLOCK); 4073 ev_run (w->other, EVRUN_NOWAIT);
2804} 4074}
2805 4075
2806static void 4076static void
2807embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4077embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2808{ 4078{
2809 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4079 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2810 4080
2811 { 4081 {
2812 struct ev_loop *loop = w->other; 4082 EV_P = w->other;
2813 4083
2814 while (fdchangecnt) 4084 while (fdchangecnt)
2815 { 4085 {
2816 fd_reify (EV_A); 4086 fd_reify (EV_A);
2817 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4087 ev_run (EV_A_ EVRUN_NOWAIT);
2818 } 4088 }
2819 } 4089 }
4090}
4091
4092static void
4093embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4094{
4095 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4096
4097 ev_embed_stop (EV_A_ w);
4098
4099 {
4100 EV_P = w->other;
4101
4102 ev_loop_fork (EV_A);
4103 ev_run (EV_A_ EVRUN_NOWAIT);
4104 }
4105
4106 ev_embed_start (EV_A_ w);
2820} 4107}
2821 4108
2822#if 0 4109#if 0
2823static void 4110static void
2824embed_idle_cb (EV_P_ ev_idle *idle, int revents) 4111embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2832{ 4119{
2833 if (expect_false (ev_is_active (w))) 4120 if (expect_false (ev_is_active (w)))
2834 return; 4121 return;
2835 4122
2836 { 4123 {
2837 struct ev_loop *loop = w->other; 4124 EV_P = w->other;
2838 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4125 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2839 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4126 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2840 } 4127 }
2841 4128
2842 EV_FREQUENT_CHECK; 4129 EV_FREQUENT_CHECK;
2843 4130
… …
2846 4133
2847 ev_prepare_init (&w->prepare, embed_prepare_cb); 4134 ev_prepare_init (&w->prepare, embed_prepare_cb);
2848 ev_set_priority (&w->prepare, EV_MINPRI); 4135 ev_set_priority (&w->prepare, EV_MINPRI);
2849 ev_prepare_start (EV_A_ &w->prepare); 4136 ev_prepare_start (EV_A_ &w->prepare);
2850 4137
4138 ev_fork_init (&w->fork, embed_fork_cb);
4139 ev_fork_start (EV_A_ &w->fork);
4140
2851 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 4141 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2852 4142
2853 ev_start (EV_A_ (W)w, 1); 4143 ev_start (EV_A_ (W)w, 1);
2854 4144
2855 EV_FREQUENT_CHECK; 4145 EV_FREQUENT_CHECK;
… …
2862 if (expect_false (!ev_is_active (w))) 4152 if (expect_false (!ev_is_active (w)))
2863 return; 4153 return;
2864 4154
2865 EV_FREQUENT_CHECK; 4155 EV_FREQUENT_CHECK;
2866 4156
2867 ev_io_stop (EV_A_ &w->io); 4157 ev_io_stop (EV_A_ &w->io);
2868 ev_prepare_stop (EV_A_ &w->prepare); 4158 ev_prepare_stop (EV_A_ &w->prepare);
4159 ev_fork_stop (EV_A_ &w->fork);
2869 4160
2870 ev_stop (EV_A_ (W)w); 4161 ev_stop (EV_A_ (W)w);
2871 4162
2872 EV_FREQUENT_CHECK; 4163 EV_FREQUENT_CHECK;
2873} 4164}
… …
2909 4200
2910 EV_FREQUENT_CHECK; 4201 EV_FREQUENT_CHECK;
2911} 4202}
2912#endif 4203#endif
2913 4204
4205#if EV_CLEANUP_ENABLE
4206void
4207ev_cleanup_start (EV_P_ ev_cleanup *w)
4208{
4209 if (expect_false (ev_is_active (w)))
4210 return;
4211
4212 EV_FREQUENT_CHECK;
4213
4214 ev_start (EV_A_ (W)w, ++cleanupcnt);
4215 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4216 cleanups [cleanupcnt - 1] = w;
4217
4218 /* cleanup watchers should never keep a refcount on the loop */
4219 ev_unref (EV_A);
4220 EV_FREQUENT_CHECK;
4221}
4222
4223void
4224ev_cleanup_stop (EV_P_ ev_cleanup *w)
4225{
4226 clear_pending (EV_A_ (W)w);
4227 if (expect_false (!ev_is_active (w)))
4228 return;
4229
4230 EV_FREQUENT_CHECK;
4231 ev_ref (EV_A);
4232
4233 {
4234 int active = ev_active (w);
4235
4236 cleanups [active - 1] = cleanups [--cleanupcnt];
4237 ev_active (cleanups [active - 1]) = active;
4238 }
4239
4240 ev_stop (EV_A_ (W)w);
4241
4242 EV_FREQUENT_CHECK;
4243}
4244#endif
4245
2914#if EV_ASYNC_ENABLE 4246#if EV_ASYNC_ENABLE
2915void 4247void
2916ev_async_start (EV_P_ ev_async *w) 4248ev_async_start (EV_P_ ev_async *w)
2917{ 4249{
2918 if (expect_false (ev_is_active (w))) 4250 if (expect_false (ev_is_active (w)))
2919 return; 4251 return;
2920 4252
4253 w->sent = 0;
4254
2921 evpipe_init (EV_A); 4255 evpipe_init (EV_A);
2922 4256
2923 EV_FREQUENT_CHECK; 4257 EV_FREQUENT_CHECK;
2924 4258
2925 ev_start (EV_A_ (W)w, ++asynccnt); 4259 ev_start (EV_A_ (W)w, ++asynccnt);
… …
2952 4286
2953void 4287void
2954ev_async_send (EV_P_ ev_async *w) 4288ev_async_send (EV_P_ ev_async *w)
2955{ 4289{
2956 w->sent = 1; 4290 w->sent = 1;
2957 evpipe_write (EV_A_ &gotasync); 4291 evpipe_write (EV_A_ &async_pending);
2958} 4292}
2959#endif 4293#endif
2960 4294
2961/*****************************************************************************/ 4295/*****************************************************************************/
2962 4296
… …
2972once_cb (EV_P_ struct ev_once *once, int revents) 4306once_cb (EV_P_ struct ev_once *once, int revents)
2973{ 4307{
2974 void (*cb)(int revents, void *arg) = once->cb; 4308 void (*cb)(int revents, void *arg) = once->cb;
2975 void *arg = once->arg; 4309 void *arg = once->arg;
2976 4310
2977 ev_io_stop (EV_A_ &once->io); 4311 ev_io_stop (EV_A_ &once->io);
2978 ev_timer_stop (EV_A_ &once->to); 4312 ev_timer_stop (EV_A_ &once->to);
2979 ev_free (once); 4313 ev_free (once);
2980 4314
2981 cb (revents, arg); 4315 cb (revents, arg);
2982} 4316}
2983 4317
2984static void 4318static void
2985once_cb_io (EV_P_ ev_io *w, int revents) 4319once_cb_io (EV_P_ ev_io *w, int revents)
2986{ 4320{
2987 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 4321 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
4322
4323 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2988} 4324}
2989 4325
2990static void 4326static void
2991once_cb_to (EV_P_ ev_timer *w, int revents) 4327once_cb_to (EV_P_ ev_timer *w, int revents)
2992{ 4328{
2993 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 4329 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
4330
4331 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2994} 4332}
2995 4333
2996void 4334void
2997ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4335ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2998{ 4336{
2999 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4337 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3000 4338
3001 if (expect_false (!once)) 4339 if (expect_false (!once))
3002 { 4340 {
3003 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4341 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3004 return; 4342 return;
3005 } 4343 }
3006 4344
3007 once->cb = cb; 4345 once->cb = cb;
3008 once->arg = arg; 4346 once->arg = arg;
… …
3020 ev_timer_set (&once->to, timeout, 0.); 4358 ev_timer_set (&once->to, timeout, 0.);
3021 ev_timer_start (EV_A_ &once->to); 4359 ev_timer_start (EV_A_ &once->to);
3022 } 4360 }
3023} 4361}
3024 4362
4363/*****************************************************************************/
4364
4365#if EV_WALK_ENABLE
4366void ecb_cold
4367ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
4368{
4369 int i, j;
4370 ev_watcher_list *wl, *wn;
4371
4372 if (types & (EV_IO | EV_EMBED))
4373 for (i = 0; i < anfdmax; ++i)
4374 for (wl = anfds [i].head; wl; )
4375 {
4376 wn = wl->next;
4377
4378#if EV_EMBED_ENABLE
4379 if (ev_cb ((ev_io *)wl) == embed_io_cb)
4380 {
4381 if (types & EV_EMBED)
4382 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
4383 }
4384 else
4385#endif
4386#if EV_USE_INOTIFY
4387 if (ev_cb ((ev_io *)wl) == infy_cb)
4388 ;
4389 else
4390#endif
4391 if ((ev_io *)wl != &pipe_w)
4392 if (types & EV_IO)
4393 cb (EV_A_ EV_IO, wl);
4394
4395 wl = wn;
4396 }
4397
4398 if (types & (EV_TIMER | EV_STAT))
4399 for (i = timercnt + HEAP0; i-- > HEAP0; )
4400#if EV_STAT_ENABLE
4401 /*TODO: timer is not always active*/
4402 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
4403 {
4404 if (types & EV_STAT)
4405 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
4406 }
4407 else
4408#endif
4409 if (types & EV_TIMER)
4410 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
4411
4412#if EV_PERIODIC_ENABLE
4413 if (types & EV_PERIODIC)
4414 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4415 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4416#endif
4417
4418#if EV_IDLE_ENABLE
4419 if (types & EV_IDLE)
4420 for (j = NUMPRI; j--; )
4421 for (i = idlecnt [j]; i--; )
4422 cb (EV_A_ EV_IDLE, idles [j][i]);
4423#endif
4424
4425#if EV_FORK_ENABLE
4426 if (types & EV_FORK)
4427 for (i = forkcnt; i--; )
4428 if (ev_cb (forks [i]) != embed_fork_cb)
4429 cb (EV_A_ EV_FORK, forks [i]);
4430#endif
4431
4432#if EV_ASYNC_ENABLE
4433 if (types & EV_ASYNC)
4434 for (i = asynccnt; i--; )
4435 cb (EV_A_ EV_ASYNC, asyncs [i]);
4436#endif
4437
4438#if EV_PREPARE_ENABLE
4439 if (types & EV_PREPARE)
4440 for (i = preparecnt; i--; )
4441# if EV_EMBED_ENABLE
4442 if (ev_cb (prepares [i]) != embed_prepare_cb)
4443# endif
4444 cb (EV_A_ EV_PREPARE, prepares [i]);
4445#endif
4446
4447#if EV_CHECK_ENABLE
4448 if (types & EV_CHECK)
4449 for (i = checkcnt; i--; )
4450 cb (EV_A_ EV_CHECK, checks [i]);
4451#endif
4452
4453#if EV_SIGNAL_ENABLE
4454 if (types & EV_SIGNAL)
4455 for (i = 0; i < EV_NSIG - 1; ++i)
4456 for (wl = signals [i].head; wl; )
4457 {
4458 wn = wl->next;
4459 cb (EV_A_ EV_SIGNAL, wl);
4460 wl = wn;
4461 }
4462#endif
4463
4464#if EV_CHILD_ENABLE
4465 if (types & EV_CHILD)
4466 for (i = (EV_PID_HASHSIZE); i--; )
4467 for (wl = childs [i]; wl; )
4468 {
4469 wn = wl->next;
4470 cb (EV_A_ EV_CHILD, wl);
4471 wl = wn;
4472 }
4473#endif
4474/* EV_STAT 0x00001000 /* stat data changed */
4475/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4476}
4477#endif
4478
3025#if EV_MULTIPLICITY 4479#if EV_MULTIPLICITY
3026 #include "ev_wrap.h" 4480 #include "ev_wrap.h"
3027#endif 4481#endif
3028 4482
3029#ifdef __cplusplus
3030}
3031#endif
3032

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