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Comparing libev/ev.c (file contents):
Revision 1.260 by root, Mon Sep 8 17:24:39 2008 UTC vs.
Revision 1.414 by root, Sat Mar 24 19:38:51 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>
… …
160# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
161# include <windows.h> 206# include <windows.h>
162# ifndef EV_SELECT_IS_WINSOCKET 207# ifndef EV_SELECT_IS_WINSOCKET
163# define EV_SELECT_IS_WINSOCKET 1 208# define EV_SELECT_IS_WINSOCKET 1
164# endif 209# endif
210# undef EV_AVOID_STDIO
165#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
166 220
167/* 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
168 262
169#ifndef EV_USE_MONOTONIC 263#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 264# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 265# define EV_USE_MONOTONIC EV_FEATURE_OS
172# else 266# else
173# define EV_USE_MONOTONIC 0 267# define EV_USE_MONOTONIC 0
174# endif 268# endif
175#endif 269#endif
176 270
177#ifndef EV_USE_REALTIME 271#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 272# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 273#endif
180 274
181#ifndef EV_USE_NANOSLEEP 275#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 276# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 277# define EV_USE_NANOSLEEP EV_FEATURE_OS
184# else 278# else
185# define EV_USE_NANOSLEEP 0 279# define EV_USE_NANOSLEEP 0
186# endif 280# endif
187#endif 281#endif
188 282
189#ifndef EV_USE_SELECT 283#ifndef EV_USE_SELECT
190# define EV_USE_SELECT 1 284# define EV_USE_SELECT EV_FEATURE_BACKENDS
191#endif 285#endif
192 286
193#ifndef EV_USE_POLL 287#ifndef EV_USE_POLL
194# ifdef _WIN32 288# ifdef _WIN32
195# define EV_USE_POLL 0 289# define EV_USE_POLL 0
196# else 290# else
197# define EV_USE_POLL 1 291# define EV_USE_POLL EV_FEATURE_BACKENDS
198# endif 292# endif
199#endif 293#endif
200 294
201#ifndef EV_USE_EPOLL 295#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1 297# define EV_USE_EPOLL EV_FEATURE_BACKENDS
204# else 298# else
205# define EV_USE_EPOLL 0 299# define EV_USE_EPOLL 0
206# endif 300# endif
207#endif 301#endif
208 302
… …
214# define EV_USE_PORT 0 308# define EV_USE_PORT 0
215#endif 309#endif
216 310
217#ifndef EV_USE_INOTIFY 311#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1 313# define EV_USE_INOTIFY EV_FEATURE_OS
220# else 314# else
221# define EV_USE_INOTIFY 0 315# define EV_USE_INOTIFY 0
222# endif 316# endif
223#endif 317#endif
224 318
225#ifndef EV_PID_HASHSIZE 319#ifndef EV_PID_HASHSIZE
226# if EV_MINIMAL 320# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
227# define EV_PID_HASHSIZE 1
228# else
229# define EV_PID_HASHSIZE 16
230# endif
231#endif 321#endif
232 322
233#ifndef EV_INOTIFY_HASHSIZE 323#ifndef EV_INOTIFY_HASHSIZE
234# if EV_MINIMAL 324# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
235# define EV_INOTIFY_HASHSIZE 1
236# else
237# define EV_INOTIFY_HASHSIZE 16
238# endif
239#endif 325#endif
240 326
241#ifndef EV_USE_EVENTFD 327#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 328# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1 329# define EV_USE_EVENTFD EV_FEATURE_OS
244# else 330# else
245# 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
246# endif 340# endif
247#endif 341#endif
248 342
249#if 0 /* debugging */ 343#if 0 /* debugging */
250# define EV_VERIFY 3 344# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 345# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 346# define EV_HEAP_CACHE_AT 1
253#endif 347#endif
254 348
255#ifndef EV_VERIFY 349#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL 350# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
257#endif 351#endif
258 352
259#ifndef EV_USE_4HEAP 353#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL 354# define EV_USE_4HEAP EV_FEATURE_DATA
261#endif 355#endif
262 356
263#ifndef EV_HEAP_CACHE_AT 357#ifndef EV_HEAP_CACHE_AT
264# 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
265#endif 373#endif
266 374
267/* 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
268 382
269#ifndef CLOCK_MONOTONIC 383#ifndef CLOCK_MONOTONIC
270# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
271# define EV_USE_MONOTONIC 0 385# define EV_USE_MONOTONIC 0
272#endif 386#endif
… …
280# undef EV_USE_INOTIFY 394# undef EV_USE_INOTIFY
281# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
282#endif 396#endif
283 397
284#if !EV_USE_NANOSLEEP 398#if !EV_USE_NANOSLEEP
285# ifndef _WIN32 399/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined(_WIN32) && !defined(__hpux)
286# include <sys/select.h> 401# include <sys/select.h>
287# endif 402# endif
288#endif 403#endif
289 404
290#if EV_USE_INOTIFY 405#if EV_USE_INOTIFY
406# include <sys/statfs.h>
291# 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
292#endif 413#endif
293 414
294#if EV_SELECT_IS_WINSOCKET 415#if EV_SELECT_IS_WINSOCKET
295# include <winsock.h> 416# include <winsock.h>
296#endif 417#endif
297 418
298#if EV_USE_EVENTFD 419#if EV_USE_EVENTFD
299/* 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 */
300# include <stdint.h> 421# include <stdint.h>
301# ifdef __cplusplus 422# ifndef EFD_NONBLOCK
302extern "C" { 423# define EFD_NONBLOCK O_NONBLOCK
303# endif 424# endif
304int eventfd (unsigned int initval, int flags); 425# ifndef EFD_CLOEXEC
305# ifdef __cplusplus 426# ifdef O_CLOEXEC
306} 427# define EFD_CLOEXEC O_CLOEXEC
428# else
429# define EFD_CLOEXEC 02000000
430# endif
307# 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};
308#endif 455#endif
309 456
310/**/ 457/**/
311 458
312#if EV_VERIFY >= 3 459#if EV_VERIFY >= 3
313# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 460# define EV_FREQUENT_CHECK ev_verify (EV_A)
314#else 461#else
315# define EV_FREQUENT_CHECK do { } while (0) 462# define EV_FREQUENT_CHECK do { } while (0)
316#endif 463#endif
317 464
318/* 465/*
319 * This is used to avoid floating point rounding problems. 466 * This is used to work around floating point rounding problems.
320 * It is added to ev_rt_now when scheduling periodics
321 * to ensure progress, time-wise, even when rounding
322 * errors are against us.
323 * This value is good at least till the year 4000. 467 * This value is good at least till the year 4000.
324 * Better solutions welcome.
325 */ 468 */
326#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 */
327 471
328#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) */
329#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) */
330/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
331 474
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;
332#if __GNUC__ >= 4 519 #if __GNUC__
333# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
334# 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
335#else 526#else
336# define expect(expr,value) (expr) 527 #include <inttypes.h>
337# define noinline
338# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
339# define inline
340# 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)))
341#endif 542 #endif
543#endif
342 544
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 __sync ()
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. */
343#define expect_false(expr) expect ((expr) != 0, 0) 706#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
344#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
345#define inline_size static inline 958#define inline_size ecb_inline
346 959
347#if EV_MINIMAL 960#if EV_FEATURE_CODE
961# define inline_speed ecb_inline
962#else
348# 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)
349#else 970#else
350# define inline_speed static inline
351#endif
352
353#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
354#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 971# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
972#endif
355 973
356#define EMPTY /* required for microsofts broken pseudo-c compiler */ 974#define EMPTY /* required for microsofts broken pseudo-c compiler */
357#define EMPTY2(a,b) /* used to suppress some warnings */ 975#define EMPTY2(a,b) /* used to suppress some warnings */
358 976
359typedef ev_watcher *W; 977typedef ev_watcher *W;
… …
361typedef ev_watcher_time *WT; 979typedef ev_watcher_time *WT;
362 980
363#define ev_active(w) ((W)(w))->active 981#define ev_active(w) ((W)(w))->active
364#define ev_at(w) ((WT)(w))->at 982#define ev_at(w) ((WT)(w))->at
365 983
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
366#if EV_USE_MONOTONIC 990#if EV_USE_MONOTONIC
367/* sig_atomic_t is used to avoid per-thread variables or locking but still */
368/* giving it a reasonably high chance of working on typical architetcures */
369static 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)
370#endif 1002#endif
371 1003
372#ifdef _WIN32 1004#ifdef _WIN32
373# include "ev_win32.c" 1005# include "ev_win32.c"
374#endif 1006#endif
375 1007
376/*****************************************************************************/ 1008/*****************************************************************************/
377 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
378static void (*syserr_cb)(const char *msg); 1108static void (*syserr_cb)(const char *msg);
379 1109
380void 1110void ecb_cold
381ev_set_syserr_cb (void (*cb)(const char *msg)) 1111ev_set_syserr_cb (void (*cb)(const char *msg))
382{ 1112{
383 syserr_cb = cb; 1113 syserr_cb = cb;
384} 1114}
385 1115
386static void noinline 1116static void noinline ecb_cold
387syserr (const char *msg) 1117ev_syserr (const char *msg)
388{ 1118{
389 if (!msg) 1119 if (!msg)
390 msg = "(libev) system error"; 1120 msg = "(libev) system error";
391 1121
392 if (syserr_cb) 1122 if (syserr_cb)
393 syserr_cb (msg); 1123 syserr_cb (msg);
394 else 1124 else
395 { 1125 {
1126#if EV_AVOID_STDIO
1127 ev_printerr (msg);
1128 ev_printerr (": ");
1129 ev_printerr (strerror (errno));
1130 ev_printerr ("\n");
1131#else
396 perror (msg); 1132 perror (msg);
1133#endif
397 abort (); 1134 abort ();
398 } 1135 }
399} 1136}
400 1137
401static void * 1138static void *
402ev_realloc_emul (void *ptr, long size) 1139ev_realloc_emul (void *ptr, long size)
403{ 1140{
1141#if __GLIBC__
1142 return realloc (ptr, size);
1143#else
404 /* some systems, notably openbsd and darwin, fail to properly 1144 /* some systems, notably openbsd and darwin, fail to properly
405 * 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
406 * the single unix specification, so work around them here. 1146 * the single unix specification, so work around them here.
407 */ 1147 */
408 1148
409 if (size) 1149 if (size)
410 return realloc (ptr, size); 1150 return realloc (ptr, size);
411 1151
412 free (ptr); 1152 free (ptr);
413 return 0; 1153 return 0;
1154#endif
414} 1155}
415 1156
416static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1157static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
417 1158
418void 1159void ecb_cold
419ev_set_allocator (void *(*cb)(void *ptr, long size)) 1160ev_set_allocator (void *(*cb)(void *ptr, long size))
420{ 1161{
421 alloc = cb; 1162 alloc = cb;
422} 1163}
423 1164
… …
426{ 1167{
427 ptr = alloc (ptr, size); 1168 ptr = alloc (ptr, size);
428 1169
429 if (!ptr && size) 1170 if (!ptr && size)
430 { 1171 {
1172#if EV_AVOID_STDIO
1173 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1174#else
431 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1175 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1176#endif
432 abort (); 1177 abort ();
433 } 1178 }
434 1179
435 return ptr; 1180 return ptr;
436} 1181}
… …
438#define ev_malloc(size) ev_realloc (0, (size)) 1183#define ev_malloc(size) ev_realloc (0, (size))
439#define ev_free(ptr) ev_realloc ((ptr), 0) 1184#define ev_free(ptr) ev_realloc ((ptr), 0)
440 1185
441/*****************************************************************************/ 1186/*****************************************************************************/
442 1187
1188/* set in reify when reification needed */
1189#define EV_ANFD_REIFY 1
1190
1191/* file descriptor info structure */
443typedef struct 1192typedef struct
444{ 1193{
445 WL head; 1194 WL head;
446 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 */
447 unsigned char reify; 1198 unsigned char unused;
1199#if EV_USE_EPOLL
1200 unsigned int egen; /* generation counter to counter epoll bugs */
1201#endif
448#if EV_SELECT_IS_WINSOCKET 1202#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
449 SOCKET handle; 1203 SOCKET handle;
450#endif 1204#endif
1205#if EV_USE_IOCP
1206 OVERLAPPED or, ow;
1207#endif
451} ANFD; 1208} ANFD;
452 1209
1210/* stores the pending event set for a given watcher */
453typedef struct 1211typedef struct
454{ 1212{
455 W w; 1213 W w;
456 int events; 1214 int events; /* the pending event set for the given watcher */
457} ANPENDING; 1215} ANPENDING;
458 1216
459#if EV_USE_INOTIFY 1217#if EV_USE_INOTIFY
460/* hash table entry per inotify-id */ 1218/* hash table entry per inotify-id */
461typedef struct 1219typedef struct
… …
464} ANFS; 1222} ANFS;
465#endif 1223#endif
466 1224
467/* Heap Entry */ 1225/* Heap Entry */
468#if EV_HEAP_CACHE_AT 1226#if EV_HEAP_CACHE_AT
1227 /* a heap element */
469 typedef struct { 1228 typedef struct {
470 ev_tstamp at; 1229 ev_tstamp at;
471 WT w; 1230 WT w;
472 } ANHE; 1231 } ANHE;
473 1232
474 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1233 #define ANHE_w(he) (he).w /* access watcher, read-write */
475 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1234 #define ANHE_at(he) (he).at /* access cached at, read-only */
476 #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 */
477#else 1236#else
1237 /* a heap element */
478 typedef WT ANHE; 1238 typedef WT ANHE;
479 1239
480 #define ANHE_w(he) (he) 1240 #define ANHE_w(he) (he)
481 #define ANHE_at(he) (he)->at 1241 #define ANHE_at(he) (he)->at
482 #define ANHE_at_cache(he) 1242 #define ANHE_at_cache(he)
… …
493 #undef VAR 1253 #undef VAR
494 }; 1254 };
495 #include "ev_wrap.h" 1255 #include "ev_wrap.h"
496 1256
497 static struct ev_loop default_loop_struct; 1257 static struct ev_loop default_loop_struct;
498 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 */
499 1259
500#else 1260#else
501 1261
502 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 */
503 #define VAR(name,decl) static decl; 1263 #define VAR(name,decl) static decl;
504 #include "ev_vars.h" 1264 #include "ev_vars.h"
505 #undef VAR 1265 #undef VAR
506 1266
507 static int ev_default_loop_ptr; 1267 static int ev_default_loop_ptr;
508 1268
509#endif 1269#endif
510 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
511/*****************************************************************************/ 1283/*****************************************************************************/
512 1284
1285#ifndef EV_HAVE_EV_TIME
513ev_tstamp 1286ev_tstamp
514ev_time (void) 1287ev_time (void)
515{ 1288{
516#if EV_USE_REALTIME 1289#if EV_USE_REALTIME
1290 if (expect_true (have_realtime))
1291 {
517 struct timespec ts; 1292 struct timespec ts;
518 clock_gettime (CLOCK_REALTIME, &ts); 1293 clock_gettime (CLOCK_REALTIME, &ts);
519 return ts.tv_sec + ts.tv_nsec * 1e-9; 1294 return ts.tv_sec + ts.tv_nsec * 1e-9;
520#else 1295 }
1296#endif
1297
521 struct timeval tv; 1298 struct timeval tv;
522 gettimeofday (&tv, 0); 1299 gettimeofday (&tv, 0);
523 return tv.tv_sec + tv.tv_usec * 1e-6; 1300 return tv.tv_sec + tv.tv_usec * 1e-6;
524#endif
525} 1301}
1302#endif
526 1303
527ev_tstamp inline_size 1304inline_size ev_tstamp
528get_clock (void) 1305get_clock (void)
529{ 1306{
530#if EV_USE_MONOTONIC 1307#if EV_USE_MONOTONIC
531 if (expect_true (have_monotonic)) 1308 if (expect_true (have_monotonic))
532 { 1309 {
… …
553 if (delay > 0.) 1330 if (delay > 0.)
554 { 1331 {
555#if EV_USE_NANOSLEEP 1332#if EV_USE_NANOSLEEP
556 struct timespec ts; 1333 struct timespec ts;
557 1334
558 ts.tv_sec = (time_t)delay; 1335 EV_TS_SET (ts, delay);
559 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
560
561 nanosleep (&ts, 0); 1336 nanosleep (&ts, 0);
562#elif defined(_WIN32) 1337#elif defined(_WIN32)
563 Sleep ((unsigned long)(delay * 1e3)); 1338 Sleep ((unsigned long)(delay * 1e3));
564#else 1339#else
565 struct timeval tv; 1340 struct timeval tv;
566 1341
567 tv.tv_sec = (time_t)delay;
568 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
569
570 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1342 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
571 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1343 /* something not guaranteed by newer posix versions, but guaranteed */
572 /* by older ones */ 1344 /* by older ones */
1345 EV_TV_SET (tv, delay);
573 select (0, 0, 0, 0, &tv); 1346 select (0, 0, 0, 0, &tv);
574#endif 1347#endif
575 } 1348 }
576} 1349}
577 1350
578/*****************************************************************************/ 1351/*****************************************************************************/
579 1352
580#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 */
581 1354
582int 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
583array_nextsize (int elem, int cur, int cnt) 1358array_nextsize (int elem, int cur, int cnt)
584{ 1359{
585 int ncur = cur + 1; 1360 int ncur = cur + 1;
586 1361
587 do 1362 do
588 ncur <<= 1; 1363 ncur <<= 1;
589 while (cnt > ncur); 1364 while (cnt > ncur);
590 1365
591 /* 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 */
592 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1367 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
593 { 1368 {
594 ncur *= elem; 1369 ncur *= elem;
595 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);
596 ncur = ncur - sizeof (void *) * 4; 1371 ncur = ncur - sizeof (void *) * 4;
… …
598 } 1373 }
599 1374
600 return ncur; 1375 return ncur;
601} 1376}
602 1377
603static noinline void * 1378static void * noinline ecb_cold
604array_realloc (int elem, void *base, int *cur, int cnt) 1379array_realloc (int elem, void *base, int *cur, int cnt)
605{ 1380{
606 *cur = array_nextsize (elem, *cur, cnt); 1381 *cur = array_nextsize (elem, *cur, cnt);
607 return ev_realloc (base, elem * *cur); 1382 return ev_realloc (base, elem * *cur);
608} 1383}
1384
1385#define array_init_zero(base,count) \
1386 memset ((void *)(base), 0, sizeof (*(base)) * (count))
609 1387
610#define array_needsize(type,base,cur,cnt,init) \ 1388#define array_needsize(type,base,cur,cnt,init) \
611 if (expect_false ((cnt) > (cur))) \ 1389 if (expect_false ((cnt) > (cur))) \
612 { \ 1390 { \
613 int ocur_ = (cur); \ 1391 int ecb_unused ocur_ = (cur); \
614 (base) = (type *)array_realloc \ 1392 (base) = (type *)array_realloc \
615 (sizeof (type), (base), &(cur), (cnt)); \ 1393 (sizeof (type), (base), &(cur), (cnt)); \
616 init ((base) + (ocur_), (cur) - ocur_); \ 1394 init ((base) + (ocur_), (cur) - ocur_); \
617 } 1395 }
618 1396
… …
625 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1403 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
626 } 1404 }
627#endif 1405#endif
628 1406
629#define array_free(stem, idx) \ 1407#define array_free(stem, idx) \
630 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
631 1409
632/*****************************************************************************/ 1410/*****************************************************************************/
1411
1412/* dummy callback for pending events */
1413static void noinline
1414pendingcb (EV_P_ ev_prepare *w, int revents)
1415{
1416}
633 1417
634void noinline 1418void noinline
635ev_feed_event (EV_P_ void *w, int revents) 1419ev_feed_event (EV_P_ void *w, int revents)
636{ 1420{
637 W w_ = (W)w; 1421 W w_ = (W)w;
… …
646 pendings [pri][w_->pending - 1].w = w_; 1430 pendings [pri][w_->pending - 1].w = w_;
647 pendings [pri][w_->pending - 1].events = revents; 1431 pendings [pri][w_->pending - 1].events = revents;
648 } 1432 }
649} 1433}
650 1434
651void 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
652queue_events (EV_P_ W *events, int eventcnt, int type) 1451queue_events (EV_P_ W *events, int eventcnt, int type)
653{ 1452{
654 int i; 1453 int i;
655 1454
656 for (i = 0; i < eventcnt; ++i) 1455 for (i = 0; i < eventcnt; ++i)
657 ev_feed_event (EV_A_ events [i], type); 1456 ev_feed_event (EV_A_ events [i], type);
658} 1457}
659 1458
660/*****************************************************************************/ 1459/*****************************************************************************/
661 1460
662void inline_size 1461inline_speed void
663anfds_init (ANFD *base, int count)
664{
665 while (count--)
666 {
667 base->head = 0;
668 base->events = EV_NONE;
669 base->reify = 0;
670
671 ++base;
672 }
673}
674
675void inline_speed
676fd_event (EV_P_ int fd, int revents) 1462fd_event_nocheck (EV_P_ int fd, int revents)
677{ 1463{
678 ANFD *anfd = anfds + fd; 1464 ANFD *anfd = anfds + fd;
679 ev_io *w; 1465 ev_io *w;
680 1466
681 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)
… …
685 if (ev) 1471 if (ev)
686 ev_feed_event (EV_A_ (W)w, ev); 1472 ev_feed_event (EV_A_ (W)w, ev);
687 } 1473 }
688} 1474}
689 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
690void 1487void
691ev_feed_fd_event (EV_P_ int fd, int revents) 1488ev_feed_fd_event (EV_P_ int fd, int revents)
692{ 1489{
693 if (fd >= 0 && fd < anfdmax) 1490 if (fd >= 0 && fd < anfdmax)
694 fd_event (EV_A_ fd, revents); 1491 fd_event_nocheck (EV_A_ fd, revents);
695} 1492}
696 1493
697void inline_size 1494/* make sure the external fd watch events are in-sync */
1495/* with the kernel/libev internal state */
1496inline_size void
698fd_reify (EV_P) 1497fd_reify (EV_P)
699{ 1498{
700 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
701 1525
702 for (i = 0; i < fdchangecnt; ++i) 1526 for (i = 0; i < fdchangecnt; ++i)
703 { 1527 {
704 int fd = fdchanges [i]; 1528 int fd = fdchanges [i];
705 ANFD *anfd = anfds + fd; 1529 ANFD *anfd = anfds + fd;
706 ev_io *w; 1530 ev_io *w;
707 1531
708 unsigned char events = 0; 1532 unsigned char o_events = anfd->events;
1533 unsigned char o_reify = anfd->reify;
709 1534
710 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1535 anfd->reify = 0;
711 events |= (unsigned char)w->events;
712 1536
713#if EV_SELECT_IS_WINSOCKET 1537 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
714 if (events)
715 { 1538 {
716 unsigned long arg; 1539 anfd->events = 0;
717 #ifdef EV_FD_TO_WIN32_HANDLE 1540
718 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1541 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
719 #else 1542 anfd->events |= (unsigned char)w->events;
720 anfd->handle = _get_osfhandle (fd); 1543
721 #endif 1544 if (o_events != anfd->events)
722 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1545 o_reify = EV__IOFDSET; /* actually |= */
723 } 1546 }
724#endif
725 1547
726 { 1548 if (o_reify & EV__IOFDSET)
727 unsigned char o_events = anfd->events;
728 unsigned char o_reify = anfd->reify;
729
730 anfd->reify = 0;
731 anfd->events = events;
732
733 if (o_events != events || o_reify & EV_IOFDSET)
734 backend_modify (EV_A_ fd, o_events, events); 1549 backend_modify (EV_A_ fd, o_events, anfd->events);
735 }
736 } 1550 }
737 1551
738 fdchangecnt = 0; 1552 fdchangecnt = 0;
739} 1553}
740 1554
741void inline_size 1555/* something about the given fd changed */
1556inline_size void
742fd_change (EV_P_ int fd, int flags) 1557fd_change (EV_P_ int fd, int flags)
743{ 1558{
744 unsigned char reify = anfds [fd].reify; 1559 unsigned char reify = anfds [fd].reify;
745 anfds [fd].reify |= flags; 1560 anfds [fd].reify |= flags;
746 1561
… …
750 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1565 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
751 fdchanges [fdchangecnt - 1] = fd; 1566 fdchanges [fdchangecnt - 1] = fd;
752 } 1567 }
753} 1568}
754 1569
755void inline_speed 1570/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1571inline_speed void ecb_cold
756fd_kill (EV_P_ int fd) 1572fd_kill (EV_P_ int fd)
757{ 1573{
758 ev_io *w; 1574 ev_io *w;
759 1575
760 while ((w = (ev_io *)anfds [fd].head)) 1576 while ((w = (ev_io *)anfds [fd].head))
… …
762 ev_io_stop (EV_A_ w); 1578 ev_io_stop (EV_A_ w);
763 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);
764 } 1580 }
765} 1581}
766 1582
767int inline_size 1583/* check whether the given fd is actually valid, for error recovery */
1584inline_size int ecb_cold
768fd_valid (int fd) 1585fd_valid (int fd)
769{ 1586{
770#ifdef _WIN32 1587#ifdef _WIN32
771 return _get_osfhandle (fd) != -1; 1588 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
772#else 1589#else
773 return fcntl (fd, F_GETFD) != -1; 1590 return fcntl (fd, F_GETFD) != -1;
774#endif 1591#endif
775} 1592}
776 1593
777/* called on EBADF to verify fds */ 1594/* called on EBADF to verify fds */
778static void noinline 1595static void noinline ecb_cold
779fd_ebadf (EV_P) 1596fd_ebadf (EV_P)
780{ 1597{
781 int fd; 1598 int fd;
782 1599
783 for (fd = 0; fd < anfdmax; ++fd) 1600 for (fd = 0; fd < anfdmax; ++fd)
… …
785 if (!fd_valid (fd) && errno == EBADF) 1602 if (!fd_valid (fd) && errno == EBADF)
786 fd_kill (EV_A_ fd); 1603 fd_kill (EV_A_ fd);
787} 1604}
788 1605
789/* 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 */
790static void noinline 1607static void noinline ecb_cold
791fd_enomem (EV_P) 1608fd_enomem (EV_P)
792{ 1609{
793 int fd; 1610 int fd;
794 1611
795 for (fd = anfdmax; fd--; ) 1612 for (fd = anfdmax; fd--; )
796 if (anfds [fd].events) 1613 if (anfds [fd].events)
797 { 1614 {
798 fd_kill (EV_A_ fd); 1615 fd_kill (EV_A_ fd);
799 return; 1616 break;
800 } 1617 }
801} 1618}
802 1619
803/* 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 */
804static void noinline 1621static void noinline
… …
808 1625
809 for (fd = 0; fd < anfdmax; ++fd) 1626 for (fd = 0; fd < anfdmax; ++fd)
810 if (anfds [fd].events) 1627 if (anfds [fd].events)
811 { 1628 {
812 anfds [fd].events = 0; 1629 anfds [fd].events = 0;
1630 anfds [fd].emask = 0;
813 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1631 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
814 } 1632 }
815} 1633}
816 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
817/*****************************************************************************/ 1649/*****************************************************************************/
818 1650
819/* 1651/*
820 * 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
821 * 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
822 * the branching factor of the d-tree. 1654 * the branching factor of the d-tree.
823 */ 1655 */
824 1656
825/* 1657/*
… …
834#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1666#define HEAP0 (DHEAP - 1) /* index of first element in heap */
835#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1667#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
836#define UPHEAP_DONE(p,k) ((p) == (k)) 1668#define UPHEAP_DONE(p,k) ((p) == (k))
837 1669
838/* away from the root */ 1670/* away from the root */
839void inline_speed 1671inline_speed void
840downheap (ANHE *heap, int N, int k) 1672downheap (ANHE *heap, int N, int k)
841{ 1673{
842 ANHE he = heap [k]; 1674 ANHE he = heap [k];
843 ANHE *E = heap + N + HEAP0; 1675 ANHE *E = heap + N + HEAP0;
844 1676
… …
884#define HEAP0 1 1716#define HEAP0 1
885#define HPARENT(k) ((k) >> 1) 1717#define HPARENT(k) ((k) >> 1)
886#define UPHEAP_DONE(p,k) (!(p)) 1718#define UPHEAP_DONE(p,k) (!(p))
887 1719
888/* away from the root */ 1720/* away from the root */
889void inline_speed 1721inline_speed void
890downheap (ANHE *heap, int N, int k) 1722downheap (ANHE *heap, int N, int k)
891{ 1723{
892 ANHE he = heap [k]; 1724 ANHE he = heap [k];
893 1725
894 for (;;) 1726 for (;;)
895 { 1727 {
896 int c = k << 1; 1728 int c = k << 1;
897 1729
898 if (c > N + HEAP0 - 1) 1730 if (c >= N + HEAP0)
899 break; 1731 break;
900 1732
901 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])
902 ? 1 : 0; 1734 ? 1 : 0;
903 1735
… …
914 ev_active (ANHE_w (he)) = k; 1746 ev_active (ANHE_w (he)) = k;
915} 1747}
916#endif 1748#endif
917 1749
918/* towards the root */ 1750/* towards the root */
919void inline_speed 1751inline_speed void
920upheap (ANHE *heap, int k) 1752upheap (ANHE *heap, int k)
921{ 1753{
922 ANHE he = heap [k]; 1754 ANHE he = heap [k];
923 1755
924 for (;;) 1756 for (;;)
… …
935 1767
936 heap [k] = he; 1768 heap [k] = he;
937 ev_active (ANHE_w (he)) = k; 1769 ev_active (ANHE_w (he)) = k;
938} 1770}
939 1771
940void inline_size 1772/* move an element suitably so it is in a correct place */
1773inline_size void
941adjustheap (ANHE *heap, int N, int k) 1774adjustheap (ANHE *heap, int N, int k)
942{ 1775{
943 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)]))
944 upheap (heap, k); 1777 upheap (heap, k);
945 else 1778 else
946 downheap (heap, N, k); 1779 downheap (heap, N, k);
947} 1780}
948 1781
949/* 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 */
950void inline_size 1783inline_size void
951reheap (ANHE *heap, int N) 1784reheap (ANHE *heap, int N)
952{ 1785{
953 int i; 1786 int i;
954 1787
955 /* 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 */
… …
958 upheap (heap, i + HEAP0); 1791 upheap (heap, i + HEAP0);
959} 1792}
960 1793
961/*****************************************************************************/ 1794/*****************************************************************************/
962 1795
1796/* associate signal watchers to a signal signal */
963typedef struct 1797typedef struct
964{ 1798{
1799 EV_ATOMIC_T pending;
1800#if EV_MULTIPLICITY
1801 EV_P;
1802#endif
965 WL head; 1803 WL head;
966 EV_ATOMIC_T gotsig;
967} ANSIG; 1804} ANSIG;
968 1805
969static ANSIG *signals; 1806static ANSIG signals [EV_NSIG - 1];
970static int signalmax;
971
972static EV_ATOMIC_T gotsig;
973
974void inline_size
975signals_init (ANSIG *base, int count)
976{
977 while (count--)
978 {
979 base->head = 0;
980 base->gotsig = 0;
981
982 ++base;
983 }
984}
985 1807
986/*****************************************************************************/ 1808/*****************************************************************************/
987 1809
988void inline_speed 1810#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
989fd_intern (int fd)
990{
991#ifdef _WIN32
992 unsigned long arg = 1;
993 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
994#else
995 fcntl (fd, F_SETFD, FD_CLOEXEC);
996 fcntl (fd, F_SETFL, O_NONBLOCK);
997#endif
998}
999 1811
1000static void noinline 1812static void noinline ecb_cold
1001evpipe_init (EV_P) 1813evpipe_init (EV_P)
1002{ 1814{
1003 if (!ev_is_active (&pipeev)) 1815 if (!ev_is_active (&pipe_w))
1004 { 1816 {
1005#if EV_USE_EVENTFD 1817# if EV_USE_EVENTFD
1818 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1819 if (evfd < 0 && errno == EINVAL)
1006 if ((evfd = eventfd (0, 0)) >= 0) 1820 evfd = eventfd (0, 0);
1821
1822 if (evfd >= 0)
1007 { 1823 {
1008 evpipe [0] = -1; 1824 evpipe [0] = -1;
1009 fd_intern (evfd); 1825 fd_intern (evfd); /* doing it twice doesn't hurt */
1010 ev_io_set (&pipeev, evfd, EV_READ); 1826 ev_io_set (&pipe_w, evfd, EV_READ);
1011 } 1827 }
1012 else 1828 else
1013#endif 1829# endif
1014 { 1830 {
1015 while (pipe (evpipe)) 1831 while (pipe (evpipe))
1016 syserr ("(libev) error creating signal/async pipe"); 1832 ev_syserr ("(libev) error creating signal/async pipe");
1017 1833
1018 fd_intern (evpipe [0]); 1834 fd_intern (evpipe [0]);
1019 fd_intern (evpipe [1]); 1835 fd_intern (evpipe [1]);
1020 ev_io_set (&pipeev, evpipe [0], EV_READ); 1836 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1021 } 1837 }
1022 1838
1023 ev_io_start (EV_A_ &pipeev); 1839 ev_io_start (EV_A_ &pipe_w);
1024 ev_unref (EV_A); /* watcher should not keep loop alive */ 1840 ev_unref (EV_A); /* watcher should not keep loop alive */
1025 } 1841 }
1026} 1842}
1027 1843
1028void inline_size 1844inline_speed void
1029evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1845evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1030{ 1846{
1031 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)
1032 { 1859 {
1860 int old_errno;
1861
1862 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1863
1033 int old_errno = errno; /* save errno because write might clobber it */ 1864 old_errno = errno; /* save errno because write will clobber it */
1034
1035 *flag = 1;
1036 1865
1037#if EV_USE_EVENTFD 1866#if EV_USE_EVENTFD
1038 if (evfd >= 0) 1867 if (evfd >= 0)
1039 { 1868 {
1040 uint64_t counter = 1; 1869 uint64_t counter = 1;
1041 write (evfd, &counter, sizeof (uint64_t)); 1870 write (evfd, &counter, sizeof (uint64_t));
1042 } 1871 }
1043 else 1872 else
1044#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 */
1045 write (evpipe [1], &old_errno, 1); 1882 write (evpipe [1], &(evpipe [1]), 1);
1883 }
1046 1884
1047 errno = old_errno; 1885 errno = old_errno;
1048 } 1886 }
1049} 1887}
1050 1888
1889/* called whenever the libev signal pipe */
1890/* got some events (signal, async) */
1051static void 1891static void
1052pipecb (EV_P_ ev_io *iow, int revents) 1892pipecb (EV_P_ ev_io *iow, int revents)
1053{ 1893{
1894 int i;
1895
1896 if (revents & EV_READ)
1897 {
1054#if EV_USE_EVENTFD 1898#if EV_USE_EVENTFD
1055 if (evfd >= 0) 1899 if (evfd >= 0)
1056 { 1900 {
1057 uint64_t counter; 1901 uint64_t counter;
1058 read (evfd, &counter, sizeof (uint64_t)); 1902 read (evfd, &counter, sizeof (uint64_t));
1059 } 1903 }
1060 else 1904 else
1061#endif 1905#endif
1062 { 1906 {
1063 char dummy; 1907 char dummy;
1908 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1064 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)
1065 } 1917 {
1918 sig_pending = 0;
1066 1919
1067 if (gotsig && ev_is_default_loop (EV_A)) 1920 for (i = EV_NSIG - 1; i--; )
1068 { 1921 if (expect_false (signals [i].pending))
1069 int signum;
1070 gotsig = 0;
1071
1072 for (signum = signalmax; signum--; )
1073 if (signals [signum].gotsig)
1074 ev_feed_signal_event (EV_A_ signum + 1); 1922 ev_feed_signal_event (EV_A_ i + 1);
1075 } 1923 }
1924#endif
1076 1925
1077#if EV_ASYNC_ENABLE 1926#if EV_ASYNC_ENABLE
1078 if (gotasync) 1927 if (async_pending)
1079 { 1928 {
1080 int i; 1929 async_pending = 0;
1081 gotasync = 0;
1082 1930
1083 for (i = asynccnt; i--; ) 1931 for (i = asynccnt; i--; )
1084 if (asyncs [i]->sent) 1932 if (asyncs [i]->sent)
1085 { 1933 {
1086 asyncs [i]->sent = 0; 1934 asyncs [i]->sent = 0;
… …
1090#endif 1938#endif
1091} 1939}
1092 1940
1093/*****************************************************************************/ 1941/*****************************************************************************/
1094 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
1095static void 1960static void
1096ev_sighandler (int signum) 1961ev_sighandler (int signum)
1097{ 1962{
1098#if EV_MULTIPLICITY
1099 struct ev_loop *loop = &default_loop_struct;
1100#endif
1101
1102#if _WIN32 1963#ifdef _WIN32
1103 signal (signum, ev_sighandler); 1964 signal (signum, ev_sighandler);
1104#endif 1965#endif
1105 1966
1106 signals [signum - 1].gotsig = 1; 1967 ev_feed_signal (signum);
1107 evpipe_write (EV_A_ &gotsig);
1108} 1968}
1109 1969
1110void noinline 1970void noinline
1111ev_feed_signal_event (EV_P_ int signum) 1971ev_feed_signal_event (EV_P_ int signum)
1112{ 1972{
1113 WL w; 1973 WL w;
1114 1974
1975 if (expect_false (signum <= 0 || signum > EV_NSIG))
1976 return;
1977
1978 --signum;
1979
1115#if EV_MULTIPLICITY 1980#if EV_MULTIPLICITY
1116 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 */
1117#endif 1982 /* or, likely more useful, feeding a signal nobody is waiting for */
1118 1983
1119 --signum; 1984 if (expect_false (signals [signum].loop != EV_A))
1120
1121 if (signum < 0 || signum >= signalmax)
1122 return; 1985 return;
1986#endif
1123 1987
1124 signals [signum].gotsig = 0; 1988 signals [signum].pending = 0;
1125 1989
1126 for (w = signals [signum].head; w; w = w->next) 1990 for (w = signals [signum].head; w; w = w->next)
1127 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1991 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1128} 1992}
1129 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
1130/*****************************************************************************/ 2016/*****************************************************************************/
1131 2017
2018#if EV_CHILD_ENABLE
1132static WL childs [EV_PID_HASHSIZE]; 2019static WL childs [EV_PID_HASHSIZE];
1133
1134#ifndef _WIN32
1135 2020
1136static ev_signal childev; 2021static ev_signal childev;
1137 2022
1138#ifndef WIFCONTINUED 2023#ifndef WIFCONTINUED
1139# define WIFCONTINUED(status) 0 2024# define WIFCONTINUED(status) 0
1140#endif 2025#endif
1141 2026
1142void inline_speed 2027/* handle a single child status event */
2028inline_speed void
1143child_reap (EV_P_ int chain, int pid, int status) 2029child_reap (EV_P_ int chain, int pid, int status)
1144{ 2030{
1145 ev_child *w; 2031 ev_child *w;
1146 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2032 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1147 2033
1148 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)
1149 { 2035 {
1150 if ((w->pid == pid || !w->pid) 2036 if ((w->pid == pid || !w->pid)
1151 && (!traced || (w->flags & 1))) 2037 && (!traced || (w->flags & 1)))
1152 { 2038 {
1153 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 */
… …
1160 2046
1161#ifndef WCONTINUED 2047#ifndef WCONTINUED
1162# define WCONTINUED 0 2048# define WCONTINUED 0
1163#endif 2049#endif
1164 2050
2051/* called on sigchld etc., calls waitpid */
1165static void 2052static void
1166childcb (EV_P_ ev_signal *sw, int revents) 2053childcb (EV_P_ ev_signal *sw, int revents)
1167{ 2054{
1168 int pid, status; 2055 int pid, status;
1169 2056
… …
1177 /* 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 */
1178 /* 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 */
1179 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2066 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1180 2067
1181 child_reap (EV_A_ pid, pid, status); 2068 child_reap (EV_A_ pid, pid, status);
1182 if (EV_PID_HASHSIZE > 1) 2069 if ((EV_PID_HASHSIZE) > 1)
1183 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 */
1184} 2071}
1185 2072
1186#endif 2073#endif
1187 2074
1188/*****************************************************************************/ 2075/*****************************************************************************/
1189 2076
2077#if EV_USE_IOCP
2078# include "ev_iocp.c"
2079#endif
1190#if EV_USE_PORT 2080#if EV_USE_PORT
1191# include "ev_port.c" 2081# include "ev_port.c"
1192#endif 2082#endif
1193#if EV_USE_KQUEUE 2083#if EV_USE_KQUEUE
1194# include "ev_kqueue.c" 2084# include "ev_kqueue.c"
… …
1201#endif 2091#endif
1202#if EV_USE_SELECT 2092#if EV_USE_SELECT
1203# include "ev_select.c" 2093# include "ev_select.c"
1204#endif 2094#endif
1205 2095
1206int 2096int ecb_cold
1207ev_version_major (void) 2097ev_version_major (void)
1208{ 2098{
1209 return EV_VERSION_MAJOR; 2099 return EV_VERSION_MAJOR;
1210} 2100}
1211 2101
1212int 2102int ecb_cold
1213ev_version_minor (void) 2103ev_version_minor (void)
1214{ 2104{
1215 return EV_VERSION_MINOR; 2105 return EV_VERSION_MINOR;
1216} 2106}
1217 2107
1218/* 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 */
1219int inline_size 2109int inline_size ecb_cold
1220enable_secure (void) 2110enable_secure (void)
1221{ 2111{
1222#ifdef _WIN32 2112#ifdef _WIN32
1223 return 0; 2113 return 0;
1224#else 2114#else
1225 return getuid () != geteuid () 2115 return getuid () != geteuid ()
1226 || getgid () != getegid (); 2116 || getgid () != getegid ();
1227#endif 2117#endif
1228} 2118}
1229 2119
1230unsigned int 2120unsigned int ecb_cold
1231ev_supported_backends (void) 2121ev_supported_backends (void)
1232{ 2122{
1233 unsigned int flags = 0; 2123 unsigned int flags = 0;
1234 2124
1235 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2125 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1239 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2129 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1240 2130
1241 return flags; 2131 return flags;
1242} 2132}
1243 2133
1244unsigned int 2134unsigned int ecb_cold
1245ev_recommended_backends (void) 2135ev_recommended_backends (void)
1246{ 2136{
1247 unsigned int flags = ev_supported_backends (); 2137 unsigned int flags = ev_supported_backends ();
1248 2138
1249#ifndef __NetBSD__ 2139#ifndef __NetBSD__
1250 /* kqueue is borked on everything but netbsd apparently */ 2140 /* kqueue is borked on everything but netbsd apparently */
1251 /* 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 */
1252 flags &= ~EVBACKEND_KQUEUE; 2142 flags &= ~EVBACKEND_KQUEUE;
1253#endif 2143#endif
1254#ifdef __APPLE__ 2144#ifdef __APPLE__
1255 // flags &= ~EVBACKEND_KQUEUE; for documentation 2145 /* only select works correctly on that "unix-certified" platform */
1256 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) */
1257#endif 2151#endif
1258 2152
1259 return flags; 2153 return flags;
1260} 2154}
1261 2155
1262unsigned int 2156unsigned int ecb_cold
1263ev_embeddable_backends (void) 2157ev_embeddable_backends (void)
1264{ 2158{
1265 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2159 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1266 2160
1267 /* 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 */
1268 /* please fix it and tell me how to detect the fix */ 2162 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1269 flags &= ~EVBACKEND_EPOLL; 2163 flags &= ~EVBACKEND_EPOLL;
1270 2164
1271 return flags; 2165 return flags;
1272} 2166}
1273 2167
1274unsigned int 2168unsigned int
1275ev_backend (EV_P) 2169ev_backend (EV_P)
1276{ 2170{
1277 return backend; 2171 return backend;
1278} 2172}
1279 2173
2174#if EV_FEATURE_API
1280unsigned int 2175unsigned int
1281ev_loop_count (EV_P) 2176ev_iteration (EV_P)
1282{ 2177{
1283 return loop_count; 2178 return loop_count;
2179}
2180
2181unsigned int
2182ev_depth (EV_P)
2183{
2184 return loop_depth;
1284} 2185}
1285 2186
1286void 2187void
1287ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2188ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1288{ 2189{
… …
1293ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2194ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1294{ 2195{
1295 timeout_blocktime = interval; 2196 timeout_blocktime = interval;
1296} 2197}
1297 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 */
1298static void noinline 2226static void noinline ecb_cold
1299loop_init (EV_P_ unsigned int flags) 2227loop_init (EV_P_ unsigned int flags)
1300{ 2228{
1301 if (!backend) 2229 if (!backend)
1302 { 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
1303#if EV_USE_MONOTONIC 2243#if EV_USE_MONOTONIC
2244 if (!have_monotonic)
1304 { 2245 {
1305 struct timespec ts; 2246 struct timespec ts;
2247
1306 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2248 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1307 have_monotonic = 1; 2249 have_monotonic = 1;
1308 } 2250 }
1309#endif
1310
1311 ev_rt_now = ev_time ();
1312 mn_now = get_clock ();
1313 now_floor = mn_now;
1314 rtmn_diff = ev_rt_now - mn_now;
1315
1316 io_blocktime = 0.;
1317 timeout_blocktime = 0.;
1318 backend = 0;
1319 backend_fd = -1;
1320 gotasync = 0;
1321#if EV_USE_INOTIFY
1322 fs_fd = -2;
1323#endif 2251#endif
1324 2252
1325 /* pid check not overridable via env */ 2253 /* pid check not overridable via env */
1326#ifndef _WIN32 2254#ifndef _WIN32
1327 if (flags & EVFLAG_FORKCHECK) 2255 if (flags & EVFLAG_FORKCHECK)
… …
1331 if (!(flags & EVFLAG_NOENV) 2259 if (!(flags & EVFLAG_NOENV)
1332 && !enable_secure () 2260 && !enable_secure ()
1333 && getenv ("LIBEV_FLAGS")) 2261 && getenv ("LIBEV_FLAGS"))
1334 flags = atoi (getenv ("LIBEV_FLAGS")); 2262 flags = atoi (getenv ("LIBEV_FLAGS"));
1335 2263
1336 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))
1337 flags |= ev_recommended_backends (); 2290 flags |= ev_recommended_backends ();
1338 2291
2292#if EV_USE_IOCP
2293 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2294#endif
1339#if EV_USE_PORT 2295#if EV_USE_PORT
1340 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2296 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1341#endif 2297#endif
1342#if EV_USE_KQUEUE 2298#if EV_USE_KQUEUE
1343 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2299 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1350#endif 2306#endif
1351#if EV_USE_SELECT 2307#if EV_USE_SELECT
1352 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2308 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1353#endif 2309#endif
1354 2310
2311 ev_prepare_init (&pending_w, pendingcb);
2312
2313#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1355 ev_init (&pipeev, pipecb); 2314 ev_init (&pipe_w, pipecb);
1356 ev_set_priority (&pipeev, EV_MAXPRI); 2315 ev_set_priority (&pipe_w, EV_MAXPRI);
2316#endif
1357 } 2317 }
1358} 2318}
1359 2319
1360static void noinline 2320/* free up a loop structure */
2321void ecb_cold
1361loop_destroy (EV_P) 2322ev_loop_destroy (EV_P)
1362{ 2323{
1363 int i; 2324 int i;
1364 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
1365 if (ev_is_active (&pipeev)) 2349 if (ev_is_active (&pipe_w))
1366 { 2350 {
1367 ev_ref (EV_A); /* signal watcher */ 2351 /*ev_ref (EV_A);*/
1368 ev_io_stop (EV_A_ &pipeev); 2352 /*ev_io_stop (EV_A_ &pipe_w);*/
1369 2353
1370#if EV_USE_EVENTFD 2354#if EV_USE_EVENTFD
1371 if (evfd >= 0) 2355 if (evfd >= 0)
1372 close (evfd); 2356 close (evfd);
1373#endif 2357#endif
1374 2358
1375 if (evpipe [0] >= 0) 2359 if (evpipe [0] >= 0)
1376 { 2360 {
1377 close (evpipe [0]); 2361 EV_WIN32_CLOSE_FD (evpipe [0]);
1378 close (evpipe [1]); 2362 EV_WIN32_CLOSE_FD (evpipe [1]);
1379 } 2363 }
1380 } 2364 }
2365
2366#if EV_USE_SIGNALFD
2367 if (ev_is_active (&sigfd_w))
2368 close (sigfd);
2369#endif
1381 2370
1382#if EV_USE_INOTIFY 2371#if EV_USE_INOTIFY
1383 if (fs_fd >= 0) 2372 if (fs_fd >= 0)
1384 close (fs_fd); 2373 close (fs_fd);
1385#endif 2374#endif
1386 2375
1387 if (backend_fd >= 0) 2376 if (backend_fd >= 0)
1388 close (backend_fd); 2377 close (backend_fd);
1389 2378
2379#if EV_USE_IOCP
2380 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2381#endif
1390#if EV_USE_PORT 2382#if EV_USE_PORT
1391 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2383 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1392#endif 2384#endif
1393#if EV_USE_KQUEUE 2385#if EV_USE_KQUEUE
1394 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2386 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1409#if EV_IDLE_ENABLE 2401#if EV_IDLE_ENABLE
1410 array_free (idle, [i]); 2402 array_free (idle, [i]);
1411#endif 2403#endif
1412 } 2404 }
1413 2405
1414 ev_free (anfds); anfdmax = 0; 2406 ev_free (anfds); anfds = 0; anfdmax = 0;
1415 2407
1416 /* 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);
1417 array_free (fdchange, EMPTY); 2410 array_free (fdchange, EMPTY);
1418 array_free (timer, EMPTY); 2411 array_free (timer, EMPTY);
1419#if EV_PERIODIC_ENABLE 2412#if EV_PERIODIC_ENABLE
1420 array_free (periodic, EMPTY); 2413 array_free (periodic, EMPTY);
1421#endif 2414#endif
1422#if EV_FORK_ENABLE 2415#if EV_FORK_ENABLE
1423 array_free (fork, EMPTY); 2416 array_free (fork, EMPTY);
1424#endif 2417#endif
2418#if EV_CLEANUP_ENABLE
2419 array_free (cleanup, EMPTY);
2420#endif
1425 array_free (prepare, EMPTY); 2421 array_free (prepare, EMPTY);
1426 array_free (check, EMPTY); 2422 array_free (check, EMPTY);
1427#if EV_ASYNC_ENABLE 2423#if EV_ASYNC_ENABLE
1428 array_free (async, EMPTY); 2424 array_free (async, EMPTY);
1429#endif 2425#endif
1430 2426
1431 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
1432} 2437}
1433 2438
1434#if EV_USE_INOTIFY 2439#if EV_USE_INOTIFY
1435void inline_size infy_fork (EV_P); 2440inline_size void infy_fork (EV_P);
1436#endif 2441#endif
1437 2442
1438void inline_size 2443inline_size void
1439loop_fork (EV_P) 2444loop_fork (EV_P)
1440{ 2445{
1441#if EV_USE_PORT 2446#if EV_USE_PORT
1442 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2447 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1443#endif 2448#endif
… …
1449#endif 2454#endif
1450#if EV_USE_INOTIFY 2455#if EV_USE_INOTIFY
1451 infy_fork (EV_A); 2456 infy_fork (EV_A);
1452#endif 2457#endif
1453 2458
1454 if (ev_is_active (&pipeev)) 2459 if (ev_is_active (&pipe_w))
1455 { 2460 {
1456 /* this "locks" the handlers against writing to the pipe */ 2461 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1457 /* while we modify the fd vars */
1458 gotsig = 1;
1459#if EV_ASYNC_ENABLE
1460 gotasync = 1;
1461#endif
1462 2462
1463 ev_ref (EV_A); 2463 ev_ref (EV_A);
1464 ev_io_stop (EV_A_ &pipeev); 2464 ev_io_stop (EV_A_ &pipe_w);
1465 2465
1466#if EV_USE_EVENTFD 2466#if EV_USE_EVENTFD
1467 if (evfd >= 0) 2467 if (evfd >= 0)
1468 close (evfd); 2468 close (evfd);
1469#endif 2469#endif
1470 2470
1471 if (evpipe [0] >= 0) 2471 if (evpipe [0] >= 0)
1472 { 2472 {
1473 close (evpipe [0]); 2473 EV_WIN32_CLOSE_FD (evpipe [0]);
1474 close (evpipe [1]); 2474 EV_WIN32_CLOSE_FD (evpipe [1]);
1475 } 2475 }
1476 2476
2477#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1477 evpipe_init (EV_A); 2478 evpipe_init (EV_A);
1478 /* now iterate over everything, in case we missed something */ 2479 /* now iterate over everything, in case we missed something */
1479 pipecb (EV_A_ &pipeev, EV_READ); 2480 pipecb (EV_A_ &pipe_w, EV_READ);
2481#endif
1480 } 2482 }
1481 2483
1482 postfork = 0; 2484 postfork = 0;
1483} 2485}
1484 2486
1485#if EV_MULTIPLICITY 2487#if EV_MULTIPLICITY
1486 2488
1487struct ev_loop * 2489struct ev_loop * ecb_cold
1488ev_loop_new (unsigned int flags) 2490ev_loop_new (unsigned int flags)
1489{ 2491{
1490 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));
1491 2493
1492 memset (loop, 0, sizeof (struct ev_loop)); 2494 memset (EV_A, 0, sizeof (struct ev_loop));
1493
1494 loop_init (EV_A_ flags); 2495 loop_init (EV_A_ flags);
1495 2496
1496 if (ev_backend (EV_A)) 2497 if (ev_backend (EV_A))
1497 return loop; 2498 return EV_A;
1498 2499
2500 ev_free (EV_A);
1499 return 0; 2501 return 0;
1500} 2502}
1501 2503
1502void 2504#endif /* multiplicity */
1503ev_loop_destroy (EV_P)
1504{
1505 loop_destroy (EV_A);
1506 ev_free (loop);
1507}
1508
1509void
1510ev_loop_fork (EV_P)
1511{
1512 postfork = 1; /* must be in line with ev_default_fork */
1513}
1514 2505
1515#if EV_VERIFY 2506#if EV_VERIFY
1516static void noinline 2507static void noinline ecb_cold
1517verify_watcher (EV_P_ W w) 2508verify_watcher (EV_P_ W w)
1518{ 2509{
1519 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2510 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1520 2511
1521 if (w->pending) 2512 if (w->pending)
1522 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));
1523} 2514}
1524 2515
1525static void noinline 2516static void noinline ecb_cold
1526verify_heap (EV_P_ ANHE *heap, int N) 2517verify_heap (EV_P_ ANHE *heap, int N)
1527{ 2518{
1528 int i; 2519 int i;
1529 2520
1530 for (i = HEAP0; i < N + HEAP0; ++i) 2521 for (i = HEAP0; i < N + HEAP0; ++i)
1531 { 2522 {
1532 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));
1533 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])));
1534 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]))));
1535 2526
1536 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2527 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1537 } 2528 }
1538} 2529}
1539 2530
1540static void noinline 2531static void noinline ecb_cold
1541array_verify (EV_P_ W *ws, int cnt) 2532array_verify (EV_P_ W *ws, int cnt)
1542{ 2533{
1543 while (cnt--) 2534 while (cnt--)
1544 { 2535 {
1545 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2536 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1546 verify_watcher (EV_A_ ws [cnt]); 2537 verify_watcher (EV_A_ ws [cnt]);
1547 } 2538 }
1548} 2539}
1549#endif 2540#endif
1550 2541
1551void 2542#if EV_FEATURE_API
2543void ecb_cold
1552ev_loop_verify (EV_P) 2544ev_verify (EV_P)
1553{ 2545{
1554#if EV_VERIFY 2546#if EV_VERIFY
1555 int i; 2547 int i;
1556 WL w; 2548 WL w;
1557 2549
1558 assert (activecnt >= -1); 2550 assert (activecnt >= -1);
1559 2551
1560 assert (fdchangemax >= fdchangecnt); 2552 assert (fdchangemax >= fdchangecnt);
1561 for (i = 0; i < fdchangecnt; ++i) 2553 for (i = 0; i < fdchangecnt; ++i)
1562 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 2554 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1563 2555
1564 assert (anfdmax >= 0); 2556 assert (anfdmax >= 0);
1565 for (i = 0; i < anfdmax; ++i) 2557 for (i = 0; i < anfdmax; ++i)
1566 for (w = anfds [i].head; w; w = w->next) 2558 for (w = anfds [i].head; w; w = w->next)
1567 { 2559 {
1568 verify_watcher (EV_A_ (W)w); 2560 verify_watcher (EV_A_ (W)w);
1569 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 2561 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1570 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));
1571 } 2563 }
1572 2564
1573 assert (timermax >= timercnt); 2565 assert (timermax >= timercnt);
1574 verify_heap (EV_A_ timers, timercnt); 2566 verify_heap (EV_A_ timers, timercnt);
1575 2567
… …
1591#if EV_FORK_ENABLE 2583#if EV_FORK_ENABLE
1592 assert (forkmax >= forkcnt); 2584 assert (forkmax >= forkcnt);
1593 array_verify (EV_A_ (W *)forks, forkcnt); 2585 array_verify (EV_A_ (W *)forks, forkcnt);
1594#endif 2586#endif
1595 2587
2588#if EV_CLEANUP_ENABLE
2589 assert (cleanupmax >= cleanupcnt);
2590 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2591#endif
2592
1596#if EV_ASYNC_ENABLE 2593#if EV_ASYNC_ENABLE
1597 assert (asyncmax >= asynccnt); 2594 assert (asyncmax >= asynccnt);
1598 array_verify (EV_A_ (W *)asyncs, asynccnt); 2595 array_verify (EV_A_ (W *)asyncs, asynccnt);
1599#endif 2596#endif
1600 2597
2598#if EV_PREPARE_ENABLE
1601 assert (preparemax >= preparecnt); 2599 assert (preparemax >= preparecnt);
1602 array_verify (EV_A_ (W *)prepares, preparecnt); 2600 array_verify (EV_A_ (W *)prepares, preparecnt);
2601#endif
1603 2602
2603#if EV_CHECK_ENABLE
1604 assert (checkmax >= checkcnt); 2604 assert (checkmax >= checkcnt);
1605 array_verify (EV_A_ (W *)checks, checkcnt); 2605 array_verify (EV_A_ (W *)checks, checkcnt);
2606#endif
1606 2607
1607# if 0 2608# if 0
2609#if EV_CHILD_ENABLE
1608 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)
1609 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2611 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2612#endif
1610# endif 2613# endif
1611#endif 2614#endif
1612} 2615}
1613 2616#endif
1614#endif /* multiplicity */
1615 2617
1616#if EV_MULTIPLICITY 2618#if EV_MULTIPLICITY
1617struct ev_loop * 2619struct ev_loop * ecb_cold
1618ev_default_loop_init (unsigned int flags)
1619#else 2620#else
1620int 2621int
2622#endif
1621ev_default_loop (unsigned int flags) 2623ev_default_loop (unsigned int flags)
1622#endif
1623{ 2624{
1624 if (!ev_default_loop_ptr) 2625 if (!ev_default_loop_ptr)
1625 { 2626 {
1626#if EV_MULTIPLICITY 2627#if EV_MULTIPLICITY
1627 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2628 EV_P = ev_default_loop_ptr = &default_loop_struct;
1628#else 2629#else
1629 ev_default_loop_ptr = 1; 2630 ev_default_loop_ptr = 1;
1630#endif 2631#endif
1631 2632
1632 loop_init (EV_A_ flags); 2633 loop_init (EV_A_ flags);
1633 2634
1634 if (ev_backend (EV_A)) 2635 if (ev_backend (EV_A))
1635 { 2636 {
1636#ifndef _WIN32 2637#if EV_CHILD_ENABLE
1637 ev_signal_init (&childev, childcb, SIGCHLD); 2638 ev_signal_init (&childev, childcb, SIGCHLD);
1638 ev_set_priority (&childev, EV_MAXPRI); 2639 ev_set_priority (&childev, EV_MAXPRI);
1639 ev_signal_start (EV_A_ &childev); 2640 ev_signal_start (EV_A_ &childev);
1640 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2641 ev_unref (EV_A); /* child watcher should not keep loop alive */
1641#endif 2642#endif
… …
1646 2647
1647 return ev_default_loop_ptr; 2648 return ev_default_loop_ptr;
1648} 2649}
1649 2650
1650void 2651void
1651ev_default_destroy (void) 2652ev_loop_fork (EV_P)
1652{ 2653{
1653#if EV_MULTIPLICITY
1654 struct ev_loop *loop = ev_default_loop_ptr;
1655#endif
1656
1657#ifndef _WIN32
1658 ev_ref (EV_A); /* child watcher */
1659 ev_signal_stop (EV_A_ &childev);
1660#endif
1661
1662 loop_destroy (EV_A);
1663}
1664
1665void
1666ev_default_fork (void)
1667{
1668#if EV_MULTIPLICITY
1669 struct ev_loop *loop = ev_default_loop_ptr;
1670#endif
1671
1672 if (backend)
1673 postfork = 1; /* must be in line with ev_loop_fork */ 2654 postfork = 1; /* must be in line with ev_default_fork */
1674} 2655}
1675 2656
1676/*****************************************************************************/ 2657/*****************************************************************************/
1677 2658
1678void 2659void
1679ev_invoke (EV_P_ void *w, int revents) 2660ev_invoke (EV_P_ void *w, int revents)
1680{ 2661{
1681 EV_CB_INVOKE ((W)w, revents); 2662 EV_CB_INVOKE ((W)w, revents);
1682} 2663}
1683 2664
1684void inline_speed 2665unsigned int
1685call_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)
1686{ 2679{
1687 int pri; 2680 int pri;
1688 2681
1689 for (pri = NUMPRI; pri--; ) 2682 for (pri = NUMPRI; pri--; )
1690 while (pendingcnt [pri]) 2683 while (pendingcnt [pri])
1691 { 2684 {
1692 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2685 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1693 2686
1694 if (expect_true (p->w))
1695 {
1696 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1697
1698 p->w->pending = 0; 2687 p->w->pending = 0;
1699 EV_CB_INVOKE (p->w, p->events); 2688 EV_CB_INVOKE (p->w, p->events);
1700 EV_FREQUENT_CHECK; 2689 EV_FREQUENT_CHECK;
1701 }
1702 } 2690 }
1703} 2691}
1704 2692
1705#if EV_IDLE_ENABLE 2693#if EV_IDLE_ENABLE
1706void inline_size 2694/* make idle watchers pending. this handles the "call-idle */
2695/* only when higher priorities are idle" logic */
2696inline_size void
1707idle_reify (EV_P) 2697idle_reify (EV_P)
1708{ 2698{
1709 if (expect_false (idleall)) 2699 if (expect_false (idleall))
1710 { 2700 {
1711 int pri; 2701 int pri;
… …
1723 } 2713 }
1724 } 2714 }
1725} 2715}
1726#endif 2716#endif
1727 2717
1728void inline_size 2718/* make timers pending */
2719inline_size void
1729timers_reify (EV_P) 2720timers_reify (EV_P)
1730{ 2721{
1731 EV_FREQUENT_CHECK; 2722 EV_FREQUENT_CHECK;
1732 2723
1733 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2724 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1734 { 2725 {
1735 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2726 do
1736
1737 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1738
1739 /* first reschedule or stop timer */
1740 if (w->repeat)
1741 { 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 {
1742 ev_at (w) += w->repeat; 2735 ev_at (w) += w->repeat;
1743 if (ev_at (w) < mn_now) 2736 if (ev_at (w) < mn_now)
1744 ev_at (w) = mn_now; 2737 ev_at (w) = mn_now;
1745 2738
1746 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.));
1747 2740
1748 ANHE_at_cache (timers [HEAP0]); 2741 ANHE_at_cache (timers [HEAP0]);
1749 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);
1750 } 2749 }
1751 else 2750 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1752 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1753 2751
1754 EV_FREQUENT_CHECK; 2752 feed_reverse_done (EV_A_ EV_TIMER);
1755 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1756 } 2753 }
1757} 2754}
1758 2755
1759#if EV_PERIODIC_ENABLE 2756#if EV_PERIODIC_ENABLE
1760void 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
1761periodics_reify (EV_P) 2784periodics_reify (EV_P)
1762{ 2785{
1763 EV_FREQUENT_CHECK; 2786 EV_FREQUENT_CHECK;
1764 2787
1765 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2788 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1766 { 2789 {
1767 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2790 int feed_count = 0;
1768 2791
1769 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2792 do
1770
1771 /* first reschedule or stop timer */
1772 if (w->reschedule_cb)
1773 { 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 {
1774 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2801 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1775 2802
1776 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));
1777 2804
1778 ANHE_at_cache (periodics [HEAP0]); 2805 ANHE_at_cache (periodics [HEAP0]);
1779 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);
1780 } 2819 }
1781 else if (w->interval) 2820 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1782 {
1783 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1784 /* if next trigger time is not sufficiently in the future, put it there */
1785 /* this might happen because of floating point inexactness */
1786 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1787 {
1788 ev_at (w) += w->interval;
1789 2821
1790 /* if interval is unreasonably low we might still have a time in the past */
1791 /* so correct this. this will make the periodic very inexact, but the user */
1792 /* has effectively asked to get triggered more often than possible */
1793 if (ev_at (w) < ev_rt_now)
1794 ev_at (w) = ev_rt_now;
1795 }
1796
1797 ANHE_at_cache (periodics [HEAP0]);
1798 downheap (periodics, periodiccnt, HEAP0);
1799 }
1800 else
1801 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1802
1803 EV_FREQUENT_CHECK;
1804 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2822 feed_reverse_done (EV_A_ EV_PERIODIC);
1805 } 2823 }
1806} 2824}
1807 2825
2826/* simply recalculate all periodics */
2827/* TODO: maybe ensure that at least one event happens when jumping forward? */
1808static void noinline 2828static void noinline ecb_cold
1809periodics_reschedule (EV_P) 2829periodics_reschedule (EV_P)
1810{ 2830{
1811 int i; 2831 int i;
1812 2832
1813 /* adjust periodics after time jump */ 2833 /* adjust periodics after time jump */
… …
1816 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2836 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1817 2837
1818 if (w->reschedule_cb) 2838 if (w->reschedule_cb)
1819 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2839 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1820 else if (w->interval) 2840 else if (w->interval)
1821 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2841 periodic_recalc (EV_A_ w);
1822 2842
1823 ANHE_at_cache (periodics [i]); 2843 ANHE_at_cache (periodics [i]);
1824 } 2844 }
1825 2845
1826 reheap (periodics, periodiccnt); 2846 reheap (periodics, periodiccnt);
1827} 2847}
1828#endif 2848#endif
1829 2849
1830void 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
1831time_update (EV_P_ ev_tstamp max_block) 2867time_update (EV_P_ ev_tstamp max_block)
1832{ 2868{
1833 int i;
1834
1835#if EV_USE_MONOTONIC 2869#if EV_USE_MONOTONIC
1836 if (expect_true (have_monotonic)) 2870 if (expect_true (have_monotonic))
1837 { 2871 {
2872 int i;
1838 ev_tstamp odiff = rtmn_diff; 2873 ev_tstamp odiff = rtmn_diff;
1839 2874
1840 mn_now = get_clock (); 2875 mn_now = get_clock ();
1841 2876
1842 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2877 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1858 * 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
1859 * in the unlikely event of having been preempted here. 2894 * in the unlikely event of having been preempted here.
1860 */ 2895 */
1861 for (i = 4; --i; ) 2896 for (i = 4; --i; )
1862 { 2897 {
2898 ev_tstamp diff;
1863 rtmn_diff = ev_rt_now - mn_now; 2899 rtmn_diff = ev_rt_now - mn_now;
1864 2900
2901 diff = odiff - rtmn_diff;
2902
1865 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2903 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1866 return; /* all is well */ 2904 return; /* all is well */
1867 2905
1868 ev_rt_now = ev_time (); 2906 ev_rt_now = ev_time ();
1869 mn_now = get_clock (); 2907 mn_now = get_clock ();
1870 now_floor = mn_now; 2908 now_floor = mn_now;
1871 } 2909 }
1872 2910
2911 /* no timer adjustment, as the monotonic clock doesn't jump */
2912 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1873# if EV_PERIODIC_ENABLE 2913# if EV_PERIODIC_ENABLE
1874 periodics_reschedule (EV_A); 2914 periodics_reschedule (EV_A);
1875# endif 2915# endif
1876 /* no timer adjustment, as the monotonic clock doesn't jump */
1877 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1878 } 2916 }
1879 else 2917 else
1880#endif 2918#endif
1881 { 2919 {
1882 ev_rt_now = ev_time (); 2920 ev_rt_now = ev_time ();
1883 2921
1884 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))
1885 { 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);
1886#if EV_PERIODIC_ENABLE 2926#if EV_PERIODIC_ENABLE
1887 periodics_reschedule (EV_A); 2927 periodics_reschedule (EV_A);
1888#endif 2928#endif
1889 /* adjust timers. this is easy, as the offset is the same for all of them */
1890 for (i = 0; i < timercnt; ++i)
1891 {
1892 ANHE *he = timers + i + HEAP0;
1893 ANHE_w (*he)->at += ev_rt_now - mn_now;
1894 ANHE_at_cache (*he);
1895 }
1896 } 2929 }
1897 2930
1898 mn_now = ev_rt_now; 2931 mn_now = ev_rt_now;
1899 } 2932 }
1900} 2933}
1901 2934
1902void 2935void
1903ev_ref (EV_P)
1904{
1905 ++activecnt;
1906}
1907
1908void
1909ev_unref (EV_P)
1910{
1911 --activecnt;
1912}
1913
1914void
1915ev_now_update (EV_P)
1916{
1917 time_update (EV_A_ 1e100);
1918}
1919
1920static int loop_done;
1921
1922void
1923ev_loop (EV_P_ int flags) 2936ev_run (EV_P_ int flags)
1924{ 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
1925 loop_done = EVUNLOOP_CANCEL; 2944 loop_done = EVBREAK_CANCEL;
1926 2945
1927 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 */
1928 2947
1929 do 2948 do
1930 { 2949 {
1931#if EV_VERIFY >= 2 2950#if EV_VERIFY >= 2
1932 ev_loop_verify (EV_A); 2951 ev_verify (EV_A);
1933#endif 2952#endif
1934 2953
1935#ifndef _WIN32 2954#ifndef _WIN32
1936 if (expect_false (curpid)) /* penalise the forking check even more */ 2955 if (expect_false (curpid)) /* penalise the forking check even more */
1937 if (expect_false (getpid () != curpid)) 2956 if (expect_false (getpid () != curpid))
… …
1945 /* we might have forked, so queue fork handlers */ 2964 /* we might have forked, so queue fork handlers */
1946 if (expect_false (postfork)) 2965 if (expect_false (postfork))
1947 if (forkcnt) 2966 if (forkcnt)
1948 { 2967 {
1949 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2968 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1950 call_pending (EV_A); 2969 EV_INVOKE_PENDING;
1951 } 2970 }
1952#endif 2971#endif
1953 2972
2973#if EV_PREPARE_ENABLE
1954 /* queue prepare watchers (and execute them) */ 2974 /* queue prepare watchers (and execute them) */
1955 if (expect_false (preparecnt)) 2975 if (expect_false (preparecnt))
1956 { 2976 {
1957 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2977 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1958 call_pending (EV_A); 2978 EV_INVOKE_PENDING;
1959 } 2979 }
2980#endif
1960 2981
1961 if (expect_false (!activecnt)) 2982 if (expect_false (loop_done))
1962 break; 2983 break;
1963 2984
1964 /* we might have forked, so reify kernel state if necessary */ 2985 /* we might have forked, so reify kernel state if necessary */
1965 if (expect_false (postfork)) 2986 if (expect_false (postfork))
1966 loop_fork (EV_A); 2987 loop_fork (EV_A);
… …
1971 /* calculate blocking time */ 2992 /* calculate blocking time */
1972 { 2993 {
1973 ev_tstamp waittime = 0.; 2994 ev_tstamp waittime = 0.;
1974 ev_tstamp sleeptime = 0.; 2995 ev_tstamp sleeptime = 0.;
1975 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
1976 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3008 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1977 { 3009 {
1978 /* update time to cancel out callback processing overhead */
1979 time_update (EV_A_ 1e100);
1980
1981 waittime = MAX_BLOCKTIME; 3010 waittime = MAX_BLOCKTIME;
1982 3011
1983 if (timercnt) 3012 if (timercnt)
1984 { 3013 {
1985 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3014 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1986 if (waittime > to) waittime = to; 3015 if (waittime > to) waittime = to;
1987 } 3016 }
1988 3017
1989#if EV_PERIODIC_ENABLE 3018#if EV_PERIODIC_ENABLE
1990 if (periodiccnt) 3019 if (periodiccnt)
1991 { 3020 {
1992 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3021 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1993 if (waittime > to) waittime = to; 3022 if (waittime > to) waittime = to;
1994 } 3023 }
1995#endif 3024#endif
1996 3025
3026 /* don't let timeouts decrease the waittime below timeout_blocktime */
1997 if (expect_false (waittime < timeout_blocktime)) 3027 if (expect_false (waittime < timeout_blocktime))
1998 waittime = timeout_blocktime; 3028 waittime = timeout_blocktime;
1999 3029
2000 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;
2001 3034
3035 /* extra check because io_blocktime is commonly 0 */
2002 if (expect_true (sleeptime > io_blocktime)) 3036 if (expect_false (io_blocktime))
2003 sleeptime = io_blocktime;
2004
2005 if (sleeptime)
2006 { 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 {
2007 ev_sleep (sleeptime); 3045 ev_sleep (sleeptime);
2008 waittime -= sleeptime; 3046 waittime -= sleeptime;
3047 }
2009 } 3048 }
2010 } 3049 }
2011 3050
3051#if EV_FEATURE_API
2012 ++loop_count; 3052 ++loop_count;
3053#endif
3054 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2013 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
2014 3066
2015 /* update ev_rt_now, do magic */ 3067 /* update ev_rt_now, do magic */
2016 time_update (EV_A_ waittime + sleeptime); 3068 time_update (EV_A_ waittime + sleeptime);
2017 } 3069 }
2018 3070
… …
2025#if EV_IDLE_ENABLE 3077#if EV_IDLE_ENABLE
2026 /* queue idle watchers unless other events are pending */ 3078 /* queue idle watchers unless other events are pending */
2027 idle_reify (EV_A); 3079 idle_reify (EV_A);
2028#endif 3080#endif
2029 3081
3082#if EV_CHECK_ENABLE
2030 /* queue check watchers, to be executed first */ 3083 /* queue check watchers, to be executed first */
2031 if (expect_false (checkcnt)) 3084 if (expect_false (checkcnt))
2032 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3085 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3086#endif
2033 3087
2034 call_pending (EV_A); 3088 EV_INVOKE_PENDING;
2035 } 3089 }
2036 while (expect_true ( 3090 while (expect_true (
2037 activecnt 3091 activecnt
2038 && !loop_done 3092 && !loop_done
2039 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3093 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2040 )); 3094 ));
2041 3095
2042 if (loop_done == EVUNLOOP_ONE) 3096 if (loop_done == EVBREAK_ONE)
2043 loop_done = EVUNLOOP_CANCEL; 3097 loop_done = EVBREAK_CANCEL;
3098
3099#if EV_FEATURE_API
3100 --loop_depth;
3101#endif
2044} 3102}
2045 3103
2046void 3104void
2047ev_unloop (EV_P_ int how) 3105ev_break (EV_P_ int how)
2048{ 3106{
2049 loop_done = how; 3107 loop_done = how;
2050} 3108}
2051 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
2052/*****************************************************************************/ 3147/*****************************************************************************/
3148/* singly-linked list management, used when the expected list length is short */
2053 3149
2054void inline_size 3150inline_size void
2055wlist_add (WL *head, WL elem) 3151wlist_add (WL *head, WL elem)
2056{ 3152{
2057 elem->next = *head; 3153 elem->next = *head;
2058 *head = elem; 3154 *head = elem;
2059} 3155}
2060 3156
2061void inline_size 3157inline_size void
2062wlist_del (WL *head, WL elem) 3158wlist_del (WL *head, WL elem)
2063{ 3159{
2064 while (*head) 3160 while (*head)
2065 { 3161 {
2066 if (*head == elem) 3162 if (expect_true (*head == elem))
2067 { 3163 {
2068 *head = elem->next; 3164 *head = elem->next;
2069 return; 3165 break;
2070 } 3166 }
2071 3167
2072 head = &(*head)->next; 3168 head = &(*head)->next;
2073 } 3169 }
2074} 3170}
2075 3171
2076void inline_speed 3172/* internal, faster, version of ev_clear_pending */
3173inline_speed void
2077clear_pending (EV_P_ W w) 3174clear_pending (EV_P_ W w)
2078{ 3175{
2079 if (w->pending) 3176 if (w->pending)
2080 { 3177 {
2081 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3178 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2082 w->pending = 0; 3179 w->pending = 0;
2083 } 3180 }
2084} 3181}
2085 3182
2086int 3183int
… …
2090 int pending = w_->pending; 3187 int pending = w_->pending;
2091 3188
2092 if (expect_true (pending)) 3189 if (expect_true (pending))
2093 { 3190 {
2094 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3191 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3192 p->w = (W)&pending_w;
2095 w_->pending = 0; 3193 w_->pending = 0;
2096 p->w = 0;
2097 return p->events; 3194 return p->events;
2098 } 3195 }
2099 else 3196 else
2100 return 0; 3197 return 0;
2101} 3198}
2102 3199
2103void inline_size 3200inline_size void
2104pri_adjust (EV_P_ W w) 3201pri_adjust (EV_P_ W w)
2105{ 3202{
2106 int pri = w->priority; 3203 int pri = ev_priority (w);
2107 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3204 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2108 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3205 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2109 w->priority = pri; 3206 ev_set_priority (w, pri);
2110} 3207}
2111 3208
2112void inline_speed 3209inline_speed void
2113ev_start (EV_P_ W w, int active) 3210ev_start (EV_P_ W w, int active)
2114{ 3211{
2115 pri_adjust (EV_A_ w); 3212 pri_adjust (EV_A_ w);
2116 w->active = active; 3213 w->active = active;
2117 ev_ref (EV_A); 3214 ev_ref (EV_A);
2118} 3215}
2119 3216
2120void inline_size 3217inline_size void
2121ev_stop (EV_P_ W w) 3218ev_stop (EV_P_ W w)
2122{ 3219{
2123 ev_unref (EV_A); 3220 ev_unref (EV_A);
2124 w->active = 0; 3221 w->active = 0;
2125} 3222}
… …
2132 int fd = w->fd; 3229 int fd = w->fd;
2133 3230
2134 if (expect_false (ev_is_active (w))) 3231 if (expect_false (ev_is_active (w)))
2135 return; 3232 return;
2136 3233
2137 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))));
2138 3236
2139 EV_FREQUENT_CHECK; 3237 EV_FREQUENT_CHECK;
2140 3238
2141 ev_start (EV_A_ (W)w, 1); 3239 ev_start (EV_A_ (W)w, 1);
2142 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 3240 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2143 wlist_add (&anfds[fd].head, (WL)w); 3241 wlist_add (&anfds[fd].head, (WL)w);
2144 3242
2145 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 3243 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2146 w->events &= ~EV_IOFDSET; 3244 w->events &= ~EV__IOFDSET;
2147 3245
2148 EV_FREQUENT_CHECK; 3246 EV_FREQUENT_CHECK;
2149} 3247}
2150 3248
2151void noinline 3249void noinline
… …
2153{ 3251{
2154 clear_pending (EV_A_ (W)w); 3252 clear_pending (EV_A_ (W)w);
2155 if (expect_false (!ev_is_active (w))) 3253 if (expect_false (!ev_is_active (w)))
2156 return; 3254 return;
2157 3255
2158 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));
2159 3257
2160 EV_FREQUENT_CHECK; 3258 EV_FREQUENT_CHECK;
2161 3259
2162 wlist_del (&anfds[w->fd].head, (WL)w); 3260 wlist_del (&anfds[w->fd].head, (WL)w);
2163 ev_stop (EV_A_ (W)w); 3261 ev_stop (EV_A_ (W)w);
2164 3262
2165 fd_change (EV_A_ w->fd, 1); 3263 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2166 3264
2167 EV_FREQUENT_CHECK; 3265 EV_FREQUENT_CHECK;
2168} 3266}
2169 3267
2170void noinline 3268void noinline
… …
2173 if (expect_false (ev_is_active (w))) 3271 if (expect_false (ev_is_active (w)))
2174 return; 3272 return;
2175 3273
2176 ev_at (w) += mn_now; 3274 ev_at (w) += mn_now;
2177 3275
2178 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.));
2179 3277
2180 EV_FREQUENT_CHECK; 3278 EV_FREQUENT_CHECK;
2181 3279
2182 ++timercnt; 3280 ++timercnt;
2183 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3281 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2186 ANHE_at_cache (timers [ev_active (w)]); 3284 ANHE_at_cache (timers [ev_active (w)]);
2187 upheap (timers, ev_active (w)); 3285 upheap (timers, ev_active (w));
2188 3286
2189 EV_FREQUENT_CHECK; 3287 EV_FREQUENT_CHECK;
2190 3288
2191 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3289 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2192} 3290}
2193 3291
2194void noinline 3292void noinline
2195ev_timer_stop (EV_P_ ev_timer *w) 3293ev_timer_stop (EV_P_ ev_timer *w)
2196{ 3294{
… …
2201 EV_FREQUENT_CHECK; 3299 EV_FREQUENT_CHECK;
2202 3300
2203 { 3301 {
2204 int active = ev_active (w); 3302 int active = ev_active (w);
2205 3303
2206 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 3304 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2207 3305
2208 --timercnt; 3306 --timercnt;
2209 3307
2210 if (expect_true (active < timercnt + HEAP0)) 3308 if (expect_true (active < timercnt + HEAP0))
2211 { 3309 {
2212 timers [active] = timers [timercnt + HEAP0]; 3310 timers [active] = timers [timercnt + HEAP0];
2213 adjustheap (timers, timercnt, active); 3311 adjustheap (timers, timercnt, active);
2214 } 3312 }
2215 } 3313 }
2216 3314
2217 EV_FREQUENT_CHECK;
2218
2219 ev_at (w) -= mn_now; 3315 ev_at (w) -= mn_now;
2220 3316
2221 ev_stop (EV_A_ (W)w); 3317 ev_stop (EV_A_ (W)w);
3318
3319 EV_FREQUENT_CHECK;
2222} 3320}
2223 3321
2224void noinline 3322void noinline
2225ev_timer_again (EV_P_ ev_timer *w) 3323ev_timer_again (EV_P_ ev_timer *w)
2226{ 3324{
2227 EV_FREQUENT_CHECK; 3325 EV_FREQUENT_CHECK;
3326
3327 clear_pending (EV_A_ (W)w);
2228 3328
2229 if (ev_is_active (w)) 3329 if (ev_is_active (w))
2230 { 3330 {
2231 if (w->repeat) 3331 if (w->repeat)
2232 { 3332 {
… …
2244 } 3344 }
2245 3345
2246 EV_FREQUENT_CHECK; 3346 EV_FREQUENT_CHECK;
2247} 3347}
2248 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
2249#if EV_PERIODIC_ENABLE 3355#if EV_PERIODIC_ENABLE
2250void noinline 3356void noinline
2251ev_periodic_start (EV_P_ ev_periodic *w) 3357ev_periodic_start (EV_P_ ev_periodic *w)
2252{ 3358{
2253 if (expect_false (ev_is_active (w))) 3359 if (expect_false (ev_is_active (w)))
… …
2255 3361
2256 if (w->reschedule_cb) 3362 if (w->reschedule_cb)
2257 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3363 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2258 else if (w->interval) 3364 else if (w->interval)
2259 { 3365 {
2260 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.));
2261 /* this formula differs from the one in periodic_reify because we do not always round up */ 3367 periodic_recalc (EV_A_ w);
2262 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2263 } 3368 }
2264 else 3369 else
2265 ev_at (w) = w->offset; 3370 ev_at (w) = w->offset;
2266 3371
2267 EV_FREQUENT_CHECK; 3372 EV_FREQUENT_CHECK;
… …
2273 ANHE_at_cache (periodics [ev_active (w)]); 3378 ANHE_at_cache (periodics [ev_active (w)]);
2274 upheap (periodics, ev_active (w)); 3379 upheap (periodics, ev_active (w));
2275 3380
2276 EV_FREQUENT_CHECK; 3381 EV_FREQUENT_CHECK;
2277 3382
2278 /*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));*/
2279} 3384}
2280 3385
2281void noinline 3386void noinline
2282ev_periodic_stop (EV_P_ ev_periodic *w) 3387ev_periodic_stop (EV_P_ ev_periodic *w)
2283{ 3388{
… …
2288 EV_FREQUENT_CHECK; 3393 EV_FREQUENT_CHECK;
2289 3394
2290 { 3395 {
2291 int active = ev_active (w); 3396 int active = ev_active (w);
2292 3397
2293 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 3398 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2294 3399
2295 --periodiccnt; 3400 --periodiccnt;
2296 3401
2297 if (expect_true (active < periodiccnt + HEAP0)) 3402 if (expect_true (active < periodiccnt + HEAP0))
2298 { 3403 {
2299 periodics [active] = periodics [periodiccnt + HEAP0]; 3404 periodics [active] = periodics [periodiccnt + HEAP0];
2300 adjustheap (periodics, periodiccnt, active); 3405 adjustheap (periodics, periodiccnt, active);
2301 } 3406 }
2302 } 3407 }
2303 3408
2304 EV_FREQUENT_CHECK;
2305
2306 ev_stop (EV_A_ (W)w); 3409 ev_stop (EV_A_ (W)w);
3410
3411 EV_FREQUENT_CHECK;
2307} 3412}
2308 3413
2309void noinline 3414void noinline
2310ev_periodic_again (EV_P_ ev_periodic *w) 3415ev_periodic_again (EV_P_ ev_periodic *w)
2311{ 3416{
… …
2317 3422
2318#ifndef SA_RESTART 3423#ifndef SA_RESTART
2319# define SA_RESTART 0 3424# define SA_RESTART 0
2320#endif 3425#endif
2321 3426
3427#if EV_SIGNAL_ENABLE
3428
2322void noinline 3429void noinline
2323ev_signal_start (EV_P_ ev_signal *w) 3430ev_signal_start (EV_P_ ev_signal *w)
2324{ 3431{
2325#if EV_MULTIPLICITY
2326 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2327#endif
2328 if (expect_false (ev_is_active (w))) 3432 if (expect_false (ev_is_active (w)))
2329 return; 3433 return;
2330 3434
2331 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));
2332 3436
2333 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));
2334 3440
2335 EV_FREQUENT_CHECK; 3441 signals [w->signum - 1].loop = EV_A;
3442#endif
2336 3443
3444 EV_FREQUENT_CHECK;
3445
3446#if EV_USE_SIGNALFD
3447 if (sigfd == -2)
2337 { 3448 {
2338#ifndef _WIN32 3449 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2339 sigset_t full, prev; 3450 if (sigfd < 0 && errno == EINVAL)
2340 sigfillset (&full); 3451 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2341 sigprocmask (SIG_SETMASK, &full, &prev);
2342#endif
2343 3452
2344 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3453 if (sigfd >= 0)
3454 {
3455 fd_intern (sigfd); /* doing it twice will not hurt */
2345 3456
2346#ifndef _WIN32 3457 sigemptyset (&sigfd_set);
2347 sigprocmask (SIG_SETMASK, &prev, 0); 3458
2348#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 }
2349 } 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
2350 3475
2351 ev_start (EV_A_ (W)w, 1); 3476 ev_start (EV_A_ (W)w, 1);
2352 wlist_add (&signals [w->signum - 1].head, (WL)w); 3477 wlist_add (&signals [w->signum - 1].head, (WL)w);
2353 3478
2354 if (!((WL)w)->next) 3479 if (!((WL)w)->next)
3480# if EV_USE_SIGNALFD
3481 if (sigfd < 0) /*TODO*/
3482# endif
2355 { 3483 {
2356#if _WIN32 3484# ifdef _WIN32
3485 evpipe_init (EV_A);
3486
2357 signal (w->signum, ev_sighandler); 3487 signal (w->signum, ev_sighandler);
2358#else 3488# else
2359 struct sigaction sa; 3489 struct sigaction sa;
3490
3491 evpipe_init (EV_A);
3492
2360 sa.sa_handler = ev_sighandler; 3493 sa.sa_handler = ev_sighandler;
2361 sigfillset (&sa.sa_mask); 3494 sigfillset (&sa.sa_mask);
2362 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 */
2363 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 }
2364#endif 3504#endif
2365 } 3505 }
2366 3506
2367 EV_FREQUENT_CHECK; 3507 EV_FREQUENT_CHECK;
2368} 3508}
2369 3509
2370void noinline 3510void noinline
… …
2378 3518
2379 wlist_del (&signals [w->signum - 1].head, (WL)w); 3519 wlist_del (&signals [w->signum - 1].head, (WL)w);
2380 ev_stop (EV_A_ (W)w); 3520 ev_stop (EV_A_ (W)w);
2381 3521
2382 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
2383 signal (w->signum, SIG_DFL); 3541 signal (w->signum, SIG_DFL);
3542 }
2384 3543
2385 EV_FREQUENT_CHECK; 3544 EV_FREQUENT_CHECK;
2386} 3545}
3546
3547#endif
3548
3549#if EV_CHILD_ENABLE
2387 3550
2388void 3551void
2389ev_child_start (EV_P_ ev_child *w) 3552ev_child_start (EV_P_ ev_child *w)
2390{ 3553{
2391#if EV_MULTIPLICITY 3554#if EV_MULTIPLICITY
2392 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));
2393#endif 3556#endif
2394 if (expect_false (ev_is_active (w))) 3557 if (expect_false (ev_is_active (w)))
2395 return; 3558 return;
2396 3559
2397 EV_FREQUENT_CHECK; 3560 EV_FREQUENT_CHECK;
2398 3561
2399 ev_start (EV_A_ (W)w, 1); 3562 ev_start (EV_A_ (W)w, 1);
2400 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3563 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2401 3564
2402 EV_FREQUENT_CHECK; 3565 EV_FREQUENT_CHECK;
2403} 3566}
2404 3567
2405void 3568void
… …
2409 if (expect_false (!ev_is_active (w))) 3572 if (expect_false (!ev_is_active (w)))
2410 return; 3573 return;
2411 3574
2412 EV_FREQUENT_CHECK; 3575 EV_FREQUENT_CHECK;
2413 3576
2414 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3577 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2415 ev_stop (EV_A_ (W)w); 3578 ev_stop (EV_A_ (W)w);
2416 3579
2417 EV_FREQUENT_CHECK; 3580 EV_FREQUENT_CHECK;
2418} 3581}
3582
3583#endif
2419 3584
2420#if EV_STAT_ENABLE 3585#if EV_STAT_ENABLE
2421 3586
2422# ifdef _WIN32 3587# ifdef _WIN32
2423# undef lstat 3588# undef lstat
2424# define lstat(a,b) _stati64 (a,b) 3589# define lstat(a,b) _stati64 (a,b)
2425# endif 3590# endif
2426 3591
2427#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 */
2428#define MIN_STAT_INTERVAL 0.1074891 3594#define MIN_STAT_INTERVAL 0.1074891
2429 3595
2430static 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);
2431 3597
2432#if EV_USE_INOTIFY 3598#if EV_USE_INOTIFY
2433# 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)
2434 3602
2435static void noinline 3603static void noinline
2436infy_add (EV_P_ ev_stat *w) 3604infy_add (EV_P_ ev_stat *w)
2437{ 3605{
2438 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);
2439 3607
2440 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 */
2441 { 3628 }
2442 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;
2443 3633
2444 /* monitor some parent directory for speedup hints */ 3634 /* if path is not there, monitor some parent directory for speedup hints */
2445 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3635 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2446 /* but an efficiency issue only */ 3636 /* but an efficiency issue only */
2447 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3637 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2448 { 3638 {
2449 char path [4096]; 3639 char path [4096];
2450 strcpy (path, w->path); 3640 strcpy (path, w->path);
… …
2454 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3644 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2455 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3645 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2456 3646
2457 char *pend = strrchr (path, '/'); 3647 char *pend = strrchr (path, '/');
2458 3648
2459 if (!pend) 3649 if (!pend || pend == path)
2460 break; /* whoops, no '/', complain to your admin */ 3650 break;
2461 3651
2462 *pend = 0; 3652 *pend = 0;
2463 w->wd = inotify_add_watch (fs_fd, path, mask); 3653 w->wd = inotify_add_watch (fs_fd, path, mask);
2464 } 3654 }
2465 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3655 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2466 } 3656 }
2467 } 3657 }
2468 else
2469 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2470 3658
2471 if (w->wd >= 0) 3659 if (w->wd >= 0)
2472 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);
2473} 3666}
2474 3667
2475static void noinline 3668static void noinline
2476infy_del (EV_P_ ev_stat *w) 3669infy_del (EV_P_ ev_stat *w)
2477{ 3670{
… …
2480 3673
2481 if (wd < 0) 3674 if (wd < 0)
2482 return; 3675 return;
2483 3676
2484 w->wd = -2; 3677 w->wd = -2;
2485 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3678 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2486 wlist_del (&fs_hash [slot].head, (WL)w); 3679 wlist_del (&fs_hash [slot].head, (WL)w);
2487 3680
2488 /* remove this watcher, if others are watching it, they will rearm */ 3681 /* remove this watcher, if others are watching it, they will rearm */
2489 inotify_rm_watch (fs_fd, wd); 3682 inotify_rm_watch (fs_fd, wd);
2490} 3683}
2491 3684
2492static void noinline 3685static void noinline
2493infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3686infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2494{ 3687{
2495 if (slot < 0) 3688 if (slot < 0)
2496 /* overflow, need to check for all hahs slots */ 3689 /* overflow, need to check for all hash slots */
2497 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3690 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2498 infy_wd (EV_A_ slot, wd, ev); 3691 infy_wd (EV_A_ slot, wd, ev);
2499 else 3692 else
2500 { 3693 {
2501 WL w_; 3694 WL w_;
2502 3695
2503 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3696 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2504 { 3697 {
2505 ev_stat *w = (ev_stat *)w_; 3698 ev_stat *w = (ev_stat *)w_;
2506 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 */
2507 3700
2508 if (w->wd == wd || wd == -1) 3701 if (w->wd == wd || wd == -1)
2509 { 3702 {
2510 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3703 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2511 { 3704 {
3705 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2512 w->wd = -1; 3706 w->wd = -1;
2513 infy_add (EV_A_ w); /* re-add, no matter what */ 3707 infy_add (EV_A_ w); /* re-add, no matter what */
2514 } 3708 }
2515 3709
2516 stat_timer_cb (EV_A_ &w->timer, 0); 3710 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2521 3715
2522static void 3716static void
2523infy_cb (EV_P_ ev_io *w, int revents) 3717infy_cb (EV_P_ ev_io *w, int revents)
2524{ 3718{
2525 char buf [EV_INOTIFY_BUFSIZE]; 3719 char buf [EV_INOTIFY_BUFSIZE];
2526 struct inotify_event *ev = (struct inotify_event *)buf;
2527 int ofs; 3720 int ofs;
2528 int len = read (fs_fd, buf, sizeof (buf)); 3721 int len = read (fs_fd, buf, sizeof (buf));
2529 3722
2530 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);
2531 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 }
2532} 3729}
2533 3730
2534void 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
2535infy_init (EV_P) 3755infy_init (EV_P)
2536{ 3756{
2537 if (fs_fd != -2) 3757 if (fs_fd != -2)
2538 return; 3758 return;
2539 3759
3760 fs_fd = -1;
3761
3762 ev_check_2625 (EV_A);
3763
2540 fs_fd = inotify_init (); 3764 fs_fd = infy_newfd ();
2541 3765
2542 if (fs_fd >= 0) 3766 if (fs_fd >= 0)
2543 { 3767 {
3768 fd_intern (fs_fd);
2544 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3769 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2545 ev_set_priority (&fs_w, EV_MAXPRI); 3770 ev_set_priority (&fs_w, EV_MAXPRI);
2546 ev_io_start (EV_A_ &fs_w); 3771 ev_io_start (EV_A_ &fs_w);
3772 ev_unref (EV_A);
2547 } 3773 }
2548} 3774}
2549 3775
2550void inline_size 3776inline_size void
2551infy_fork (EV_P) 3777infy_fork (EV_P)
2552{ 3778{
2553 int slot; 3779 int slot;
2554 3780
2555 if (fs_fd < 0) 3781 if (fs_fd < 0)
2556 return; 3782 return;
2557 3783
3784 ev_ref (EV_A);
3785 ev_io_stop (EV_A_ &fs_w);
2558 close (fs_fd); 3786 close (fs_fd);
2559 fs_fd = inotify_init (); 3787 fs_fd = infy_newfd ();
2560 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
2561 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3797 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2562 { 3798 {
2563 WL w_ = fs_hash [slot].head; 3799 WL w_ = fs_hash [slot].head;
2564 fs_hash [slot].head = 0; 3800 fs_hash [slot].head = 0;
2565 3801
2566 while (w_) 3802 while (w_)
… …
2571 w->wd = -1; 3807 w->wd = -1;
2572 3808
2573 if (fs_fd >= 0) 3809 if (fs_fd >= 0)
2574 infy_add (EV_A_ w); /* re-add, no matter what */ 3810 infy_add (EV_A_ w); /* re-add, no matter what */
2575 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);
2576 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 }
2577 } 3818 }
2578
2579 } 3819 }
2580} 3820}
2581 3821
2582#endif 3822#endif
2583 3823
… …
2599static void noinline 3839static void noinline
2600stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3840stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2601{ 3841{
2602 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3842 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2603 3843
2604 /* we copy this here each the time so that */ 3844 ev_statdata prev = w->attr;
2605 /* prev has the old value when the callback gets invoked */
2606 w->prev = w->attr;
2607 ev_stat_stat (EV_A_ w); 3845 ev_stat_stat (EV_A_ w);
2608 3846
2609 /* 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 */
2610 if ( 3848 if (
2611 w->prev.st_dev != w->attr.st_dev 3849 prev.st_dev != w->attr.st_dev
2612 || w->prev.st_ino != w->attr.st_ino 3850 || prev.st_ino != w->attr.st_ino
2613 || w->prev.st_mode != w->attr.st_mode 3851 || prev.st_mode != w->attr.st_mode
2614 || w->prev.st_nlink != w->attr.st_nlink 3852 || prev.st_nlink != w->attr.st_nlink
2615 || w->prev.st_uid != w->attr.st_uid 3853 || prev.st_uid != w->attr.st_uid
2616 || w->prev.st_gid != w->attr.st_gid 3854 || prev.st_gid != w->attr.st_gid
2617 || w->prev.st_rdev != w->attr.st_rdev 3855 || prev.st_rdev != w->attr.st_rdev
2618 || w->prev.st_size != w->attr.st_size 3856 || prev.st_size != w->attr.st_size
2619 || w->prev.st_atime != w->attr.st_atime 3857 || prev.st_atime != w->attr.st_atime
2620 || w->prev.st_mtime != w->attr.st_mtime 3858 || prev.st_mtime != w->attr.st_mtime
2621 || w->prev.st_ctime != w->attr.st_ctime 3859 || prev.st_ctime != w->attr.st_ctime
2622 ) { 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
2623 #if EV_USE_INOTIFY 3866 #if EV_USE_INOTIFY
3867 if (fs_fd >= 0)
3868 {
2624 infy_del (EV_A_ w); 3869 infy_del (EV_A_ w);
2625 infy_add (EV_A_ w); 3870 infy_add (EV_A_ w);
2626 ev_stat_stat (EV_A_ w); /* avoid race... */ 3871 ev_stat_stat (EV_A_ w); /* avoid race... */
3872 }
2627 #endif 3873 #endif
2628 3874
2629 ev_feed_event (EV_A_ w, EV_STAT); 3875 ev_feed_event (EV_A_ w, EV_STAT);
2630 } 3876 }
2631} 3877}
… …
2634ev_stat_start (EV_P_ ev_stat *w) 3880ev_stat_start (EV_P_ ev_stat *w)
2635{ 3881{
2636 if (expect_false (ev_is_active (w))) 3882 if (expect_false (ev_is_active (w)))
2637 return; 3883 return;
2638 3884
2639 /* since we use memcmp, we need to clear any padding data etc. */
2640 memset (&w->prev, 0, sizeof (ev_statdata));
2641 memset (&w->attr, 0, sizeof (ev_statdata));
2642
2643 ev_stat_stat (EV_A_ w); 3885 ev_stat_stat (EV_A_ w);
2644 3886
3887 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2645 if (w->interval < MIN_STAT_INTERVAL) 3888 w->interval = MIN_STAT_INTERVAL;
2646 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2647 3889
2648 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);
2649 ev_set_priority (&w->timer, ev_priority (w)); 3891 ev_set_priority (&w->timer, ev_priority (w));
2650 3892
2651#if EV_USE_INOTIFY 3893#if EV_USE_INOTIFY
2652 infy_init (EV_A); 3894 infy_init (EV_A);
2653 3895
2654 if (fs_fd >= 0) 3896 if (fs_fd >= 0)
2655 infy_add (EV_A_ w); 3897 infy_add (EV_A_ w);
2656 else 3898 else
2657#endif 3899#endif
3900 {
2658 ev_timer_start (EV_A_ &w->timer); 3901 ev_timer_again (EV_A_ &w->timer);
3902 ev_unref (EV_A);
3903 }
2659 3904
2660 ev_start (EV_A_ (W)w, 1); 3905 ev_start (EV_A_ (W)w, 1);
2661 3906
2662 EV_FREQUENT_CHECK; 3907 EV_FREQUENT_CHECK;
2663} 3908}
… …
2672 EV_FREQUENT_CHECK; 3917 EV_FREQUENT_CHECK;
2673 3918
2674#if EV_USE_INOTIFY 3919#if EV_USE_INOTIFY
2675 infy_del (EV_A_ w); 3920 infy_del (EV_A_ w);
2676#endif 3921#endif
3922
3923 if (ev_is_active (&w->timer))
3924 {
3925 ev_ref (EV_A);
2677 ev_timer_stop (EV_A_ &w->timer); 3926 ev_timer_stop (EV_A_ &w->timer);
3927 }
2678 3928
2679 ev_stop (EV_A_ (W)w); 3929 ev_stop (EV_A_ (W)w);
2680 3930
2681 EV_FREQUENT_CHECK; 3931 EV_FREQUENT_CHECK;
2682} 3932}
… …
2727 3977
2728 EV_FREQUENT_CHECK; 3978 EV_FREQUENT_CHECK;
2729} 3979}
2730#endif 3980#endif
2731 3981
3982#if EV_PREPARE_ENABLE
2732void 3983void
2733ev_prepare_start (EV_P_ ev_prepare *w) 3984ev_prepare_start (EV_P_ ev_prepare *w)
2734{ 3985{
2735 if (expect_false (ev_is_active (w))) 3986 if (expect_false (ev_is_active (w)))
2736 return; 3987 return;
… …
2762 4013
2763 ev_stop (EV_A_ (W)w); 4014 ev_stop (EV_A_ (W)w);
2764 4015
2765 EV_FREQUENT_CHECK; 4016 EV_FREQUENT_CHECK;
2766} 4017}
4018#endif
2767 4019
4020#if EV_CHECK_ENABLE
2768void 4021void
2769ev_check_start (EV_P_ ev_check *w) 4022ev_check_start (EV_P_ ev_check *w)
2770{ 4023{
2771 if (expect_false (ev_is_active (w))) 4024 if (expect_false (ev_is_active (w)))
2772 return; 4025 return;
… …
2798 4051
2799 ev_stop (EV_A_ (W)w); 4052 ev_stop (EV_A_ (W)w);
2800 4053
2801 EV_FREQUENT_CHECK; 4054 EV_FREQUENT_CHECK;
2802} 4055}
4056#endif
2803 4057
2804#if EV_EMBED_ENABLE 4058#if EV_EMBED_ENABLE
2805void noinline 4059void noinline
2806ev_embed_sweep (EV_P_ ev_embed *w) 4060ev_embed_sweep (EV_P_ ev_embed *w)
2807{ 4061{
2808 ev_loop (w->other, EVLOOP_NONBLOCK); 4062 ev_run (w->other, EVRUN_NOWAIT);
2809} 4063}
2810 4064
2811static void 4065static void
2812embed_io_cb (EV_P_ ev_io *io, int revents) 4066embed_io_cb (EV_P_ ev_io *io, int revents)
2813{ 4067{
2814 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4068 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2815 4069
2816 if (ev_cb (w)) 4070 if (ev_cb (w))
2817 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4071 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2818 else 4072 else
2819 ev_loop (w->other, EVLOOP_NONBLOCK); 4073 ev_run (w->other, EVRUN_NOWAIT);
2820} 4074}
2821 4075
2822static void 4076static void
2823embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4077embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2824{ 4078{
2825 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4079 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2826 4080
2827 { 4081 {
2828 struct ev_loop *loop = w->other; 4082 EV_P = w->other;
2829 4083
2830 while (fdchangecnt) 4084 while (fdchangecnt)
2831 { 4085 {
2832 fd_reify (EV_A); 4086 fd_reify (EV_A);
2833 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4087 ev_run (EV_A_ EVRUN_NOWAIT);
2834 } 4088 }
2835 } 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);
2836} 4107}
2837 4108
2838#if 0 4109#if 0
2839static void 4110static void
2840embed_idle_cb (EV_P_ ev_idle *idle, int revents) 4111embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2848{ 4119{
2849 if (expect_false (ev_is_active (w))) 4120 if (expect_false (ev_is_active (w)))
2850 return; 4121 return;
2851 4122
2852 { 4123 {
2853 struct ev_loop *loop = w->other; 4124 EV_P = w->other;
2854 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 ()));
2855 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);
2856 } 4127 }
2857 4128
2858 EV_FREQUENT_CHECK; 4129 EV_FREQUENT_CHECK;
2859 4130
… …
2862 4133
2863 ev_prepare_init (&w->prepare, embed_prepare_cb); 4134 ev_prepare_init (&w->prepare, embed_prepare_cb);
2864 ev_set_priority (&w->prepare, EV_MINPRI); 4135 ev_set_priority (&w->prepare, EV_MINPRI);
2865 ev_prepare_start (EV_A_ &w->prepare); 4136 ev_prepare_start (EV_A_ &w->prepare);
2866 4137
4138 ev_fork_init (&w->fork, embed_fork_cb);
4139 ev_fork_start (EV_A_ &w->fork);
4140
2867 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 4141 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2868 4142
2869 ev_start (EV_A_ (W)w, 1); 4143 ev_start (EV_A_ (W)w, 1);
2870 4144
2871 EV_FREQUENT_CHECK; 4145 EV_FREQUENT_CHECK;
… …
2878 if (expect_false (!ev_is_active (w))) 4152 if (expect_false (!ev_is_active (w)))
2879 return; 4153 return;
2880 4154
2881 EV_FREQUENT_CHECK; 4155 EV_FREQUENT_CHECK;
2882 4156
2883 ev_io_stop (EV_A_ &w->io); 4157 ev_io_stop (EV_A_ &w->io);
2884 ev_prepare_stop (EV_A_ &w->prepare); 4158 ev_prepare_stop (EV_A_ &w->prepare);
4159 ev_fork_stop (EV_A_ &w->fork);
2885 4160
2886 ev_stop (EV_A_ (W)w); 4161 ev_stop (EV_A_ (W)w);
2887 4162
2888 EV_FREQUENT_CHECK; 4163 EV_FREQUENT_CHECK;
2889} 4164}
… …
2925 4200
2926 EV_FREQUENT_CHECK; 4201 EV_FREQUENT_CHECK;
2927} 4202}
2928#endif 4203#endif
2929 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
2930#if EV_ASYNC_ENABLE 4246#if EV_ASYNC_ENABLE
2931void 4247void
2932ev_async_start (EV_P_ ev_async *w) 4248ev_async_start (EV_P_ ev_async *w)
2933{ 4249{
2934 if (expect_false (ev_is_active (w))) 4250 if (expect_false (ev_is_active (w)))
2935 return; 4251 return;
2936 4252
4253 w->sent = 0;
4254
2937 evpipe_init (EV_A); 4255 evpipe_init (EV_A);
2938 4256
2939 EV_FREQUENT_CHECK; 4257 EV_FREQUENT_CHECK;
2940 4258
2941 ev_start (EV_A_ (W)w, ++asynccnt); 4259 ev_start (EV_A_ (W)w, ++asynccnt);
… …
2968 4286
2969void 4287void
2970ev_async_send (EV_P_ ev_async *w) 4288ev_async_send (EV_P_ ev_async *w)
2971{ 4289{
2972 w->sent = 1; 4290 w->sent = 1;
2973 evpipe_write (EV_A_ &gotasync); 4291 evpipe_write (EV_A_ &async_pending);
2974} 4292}
2975#endif 4293#endif
2976 4294
2977/*****************************************************************************/ 4295/*****************************************************************************/
2978 4296
… …
2998} 4316}
2999 4317
3000static void 4318static void
3001once_cb_io (EV_P_ ev_io *w, int revents) 4319once_cb_io (EV_P_ ev_io *w, int revents)
3002{ 4320{
3003 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));
3004} 4324}
3005 4325
3006static void 4326static void
3007once_cb_to (EV_P_ ev_timer *w, int revents) 4327once_cb_to (EV_P_ ev_timer *w, int revents)
3008{ 4328{
3009 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));
3010} 4332}
3011 4333
3012void 4334void
3013ev_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)
3014{ 4336{
3015 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));
3016 4338
3017 if (expect_false (!once)) 4339 if (expect_false (!once))
3018 { 4340 {
3019 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4341 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3020 return; 4342 return;
3021 } 4343 }
3022 4344
3023 once->cb = cb; 4345 once->cb = cb;
3024 once->arg = arg; 4346 once->arg = arg;
… …
3036 ev_timer_set (&once->to, timeout, 0.); 4358 ev_timer_set (&once->to, timeout, 0.);
3037 ev_timer_start (EV_A_ &once->to); 4359 ev_timer_start (EV_A_ &once->to);
3038 } 4360 }
3039} 4361}
3040 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
3041#if EV_MULTIPLICITY 4479#if EV_MULTIPLICITY
3042 #include "ev_wrap.h" 4480 #include "ev_wrap.h"
3043#endif 4481#endif
3044 4482
3045#ifdef __cplusplus
3046}
3047#endif
3048

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