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Comparing libev/ev.c (file contents):
Revision 1.297 by root, Fri Jul 10 00:36:21 2009 UTC vs.
Revision 1.427 by root, Sun May 6 19:29:59 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# 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
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
138# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
139# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# 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
144# endif 163# endif
145 164
146#endif 165#endif
147 166
148#include <math.h>
149#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
150#include <fcntl.h> 169#include <fcntl.h>
151#include <stddef.h> 170#include <stddef.h>
152 171
153#include <stdio.h> 172#include <stdio.h>
154 173
155#include <assert.h> 174#include <assert.h>
156#include <errno.h> 175#include <errno.h>
157#include <sys/types.h> 176#include <sys/types.h>
158#include <time.h> 177#include <time.h>
178#include <limits.h>
159 179
160#include <signal.h> 180#include <signal.h>
161 181
162#ifdef EV_H 182#ifdef EV_H
163# include EV_H 183# include EV_H
164#else 184#else
165# 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
166#endif 197#endif
167 198
168#ifndef _WIN32 199#ifndef _WIN32
169# include <sys/time.h> 200# include <sys/time.h>
170# include <sys/wait.h> 201# include <sys/wait.h>
… …
174# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
175# include <windows.h> 206# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 207# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 208# define EV_SELECT_IS_WINSOCKET 1
178# endif 209# endif
210# undef EV_AVOID_STDIO
179#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
180 220
181/* 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
182 254
183#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ >= 2
185# define EV_USE_CLOCK_SYSCALL 1 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 258# else
187# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
188# endif 260# endif
189#endif 261#endif
190 262
191#ifndef EV_USE_MONOTONIC 263#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 264# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 265# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 266# else
195# define EV_USE_MONOTONIC 0 267# define EV_USE_MONOTONIC 0
196# endif 268# endif
197#endif 269#endif
198 270
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 272# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 273#endif
202 274
203#ifndef EV_USE_NANOSLEEP 275#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 276# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 277# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 278# else
207# define EV_USE_NANOSLEEP 0 279# define EV_USE_NANOSLEEP 0
208# endif 280# endif
209#endif 281#endif
210 282
211#ifndef EV_USE_SELECT 283#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 284# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 285#endif
214 286
215#ifndef EV_USE_POLL 287#ifndef EV_USE_POLL
216# ifdef _WIN32 288# ifdef _WIN32
217# define EV_USE_POLL 0 289# define EV_USE_POLL 0
218# else 290# else
219# define EV_USE_POLL 1 291# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 292# endif
221#endif 293#endif
222 294
223#ifndef EV_USE_EPOLL 295#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 296# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 297# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 298# else
227# define EV_USE_EPOLL 0 299# define EV_USE_EPOLL 0
228# endif 300# endif
229#endif 301#endif
230 302
… …
236# define EV_USE_PORT 0 308# define EV_USE_PORT 0
237#endif 309#endif
238 310
239#ifndef EV_USE_INOTIFY 311#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 312# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 313# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 314# else
243# define EV_USE_INOTIFY 0 315# define EV_USE_INOTIFY 0
244# endif 316# endif
245#endif 317#endif
246 318
247#ifndef EV_PID_HASHSIZE 319#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 320# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
249# define EV_PID_HASHSIZE 1
250# else
251# define EV_PID_HASHSIZE 16
252# endif
253#endif 321#endif
254 322
255#ifndef EV_INOTIFY_HASHSIZE 323#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 324# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_INOTIFY_HASHSIZE 1
258# else
259# define EV_INOTIFY_HASHSIZE 16
260# endif
261#endif 325#endif
262 326
263#ifndef EV_USE_EVENTFD 327#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 328# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 329# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 330# else
267# 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
268# endif 340# endif
269#endif 341#endif
270 342
271#if 0 /* debugging */ 343#if 0 /* debugging */
272# define EV_VERIFY 3 344# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 345# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 346# define EV_HEAP_CACHE_AT 1
275#endif 347#endif
276 348
277#ifndef EV_VERIFY 349#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 350# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 351#endif
280 352
281#ifndef EV_USE_4HEAP 353#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 354# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 355#endif
284 356
285#ifndef EV_HEAP_CACHE_AT 357#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 358# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
287#endif 359#endif
288 360
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 361/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290/* which makes programs even slower. might work on other unices, too. */ 362/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 363#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h> 364# include <sys/syscall.h>
293# ifdef SYS_clock_gettime 365# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 366# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC 367# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1 368# define EV_USE_MONOTONIC 1
297# else 369# else
… …
300# endif 372# endif
301#endif 373#endif
302 374
303/* 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 */
304 376
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
382
305#ifndef CLOCK_MONOTONIC 383#ifndef CLOCK_MONOTONIC
306# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
307# define EV_USE_MONOTONIC 0 385# define EV_USE_MONOTONIC 0
308#endif 386#endif
309 387
… …
316# undef EV_USE_INOTIFY 394# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
318#endif 396#endif
319 397
320#if !EV_USE_NANOSLEEP 398#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 399/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined _WIN32 && !defined __hpux
322# include <sys/select.h> 401# include <sys/select.h>
323# endif 402# endif
324#endif 403#endif
325 404
326#if EV_USE_INOTIFY 405#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 406# include <sys/statfs.h>
329# include <sys/inotify.h> 407# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 409# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 410# undef EV_USE_INOTIFY
… …
339#endif 417#endif
340 418
341#if EV_USE_EVENTFD 419#if EV_USE_EVENTFD
342/* 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 */
343# include <stdint.h> 421# include <stdint.h>
344# ifdef __cplusplus 422# ifndef EFD_NONBLOCK
345extern "C" { 423# define EFD_NONBLOCK O_NONBLOCK
346# endif 424# endif
347int eventfd (unsigned int initval, int flags); 425# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 426# ifdef O_CLOEXEC
349} 427# define EFD_CLOEXEC O_CLOEXEC
428# else
429# define EFD_CLOEXEC 02000000
430# endif
350# 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};
351#endif 455#endif
352 456
353/**/ 457/**/
354 458
355#if EV_VERIFY >= 3 459#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 460# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 461#else
358# define EV_FREQUENT_CHECK do { } while (0) 462# define EV_FREQUENT_CHECK do { } while (0)
359#endif 463#endif
360 464
361/* 465/*
362 * This is used to avoid floating point rounding problems. 466 * This is used to work around floating point rounding problems.
363 * It is added to ev_rt_now when scheduling periodics
364 * to ensure progress, time-wise, even when rounding
365 * errors are against us.
366 * This value is good at least till the year 4000. 467 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 468 */
369#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 */
370 471
371#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) */
372#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) */
373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
374 474
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;
375#if __GNUC__ >= 4 519 #if __GNUC__
376# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
377# 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
378#else 526#else
379# define expect(expr,value) (expr) 527 #include <inttypes.h>
380# define noinline
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
382# define inline
383# 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)))
384#endif 542 #endif
543#endif
385 544
545/*****************************************************************************/
546
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549
550#if ECB_NO_THREADS
551# define ECB_NO_SMP 1
552#endif
553
554#if ECB_NO_THREADS || ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0)
556#endif
557
558#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
560 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
567 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
570 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #elif defined __mips__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
584 #elif defined __alpha__
585 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
586 #endif
587 #endif
588#endif
589
590#ifndef ECB_MEMORY_FENCE
591 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
592 #define ECB_MEMORY_FENCE __sync_synchronize ()
593 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
594 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
595 #elif _MSC_VER >= 1400 /* VC++ 2005 */
596 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
597 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
598 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
599 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
600 #elif defined _WIN32
601 #include <WinNT.h>
602 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
603 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
604 #include <mbarrier.h>
605 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
606 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
607 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
608 #elif __xlC__
609 #define ECB_MEMORY_FENCE __sync ()
610 #endif
611#endif
612
613#ifndef ECB_MEMORY_FENCE
614 #if !ECB_AVOID_PTHREADS
615 /*
616 * if you get undefined symbol references to pthread_mutex_lock,
617 * or failure to find pthread.h, then you should implement
618 * the ECB_MEMORY_FENCE operations for your cpu/compiler
619 * OR provide pthread.h and link against the posix thread library
620 * of your system.
621 */
622 #include <pthread.h>
623 #define ECB_NEEDS_PTHREADS 1
624 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
625
626 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
627 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
628 #endif
629#endif
630
631#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
632 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
633#endif
634
635#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
636 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
637#endif
638
639/*****************************************************************************/
640
641#define ECB_C99 (__STDC_VERSION__ >= 199901L)
642
643#if __cplusplus
644 #define ecb_inline static inline
645#elif ECB_GCC_VERSION(2,5)
646 #define ecb_inline static __inline__
647#elif ECB_C99
648 #define ecb_inline static inline
649#else
650 #define ecb_inline static
651#endif
652
653#if ECB_GCC_VERSION(3,3)
654 #define ecb_restrict __restrict__
655#elif ECB_C99
656 #define ecb_restrict restrict
657#else
658 #define ecb_restrict
659#endif
660
661typedef int ecb_bool;
662
663#define ECB_CONCAT_(a, b) a ## b
664#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
665#define ECB_STRINGIFY_(a) # a
666#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
667
668#define ecb_function_ ecb_inline
669
670#if ECB_GCC_VERSION(3,1)
671 #define ecb_attribute(attrlist) __attribute__(attrlist)
672 #define ecb_is_constant(expr) __builtin_constant_p (expr)
673 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
674 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
675#else
676 #define ecb_attribute(attrlist)
677 #define ecb_is_constant(expr) 0
678 #define ecb_expect(expr,value) (expr)
679 #define ecb_prefetch(addr,rw,locality)
680#endif
681
682/* no emulation for ecb_decltype */
683#if ECB_GCC_VERSION(4,5)
684 #define ecb_decltype(x) __decltype(x)
685#elif ECB_GCC_VERSION(3,0)
686 #define ecb_decltype(x) __typeof(x)
687#endif
688
689#define ecb_noinline ecb_attribute ((__noinline__))
690#define ecb_noreturn ecb_attribute ((__noreturn__))
691#define ecb_unused ecb_attribute ((__unused__))
692#define ecb_const ecb_attribute ((__const__))
693#define ecb_pure ecb_attribute ((__pure__))
694
695#if ECB_GCC_VERSION(4,3)
696 #define ecb_artificial ecb_attribute ((__artificial__))
697 #define ecb_hot ecb_attribute ((__hot__))
698 #define ecb_cold ecb_attribute ((__cold__))
699#else
700 #define ecb_artificial
701 #define ecb_hot
702 #define ecb_cold
703#endif
704
705/* put around conditional expressions if you are very sure that the */
706/* expression is mostly true or mostly false. note that these return */
707/* booleans, not the expression. */
386#define expect_false(expr) expect ((expr) != 0, 0) 708#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 709#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
710/* for compatibility to the rest of the world */
711#define ecb_likely(expr) ecb_expect_true (expr)
712#define ecb_unlikely(expr) ecb_expect_false (expr)
713
714/* count trailing zero bits and count # of one bits */
715#if ECB_GCC_VERSION(3,4)
716 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
717 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
718 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
719 #define ecb_ctz32(x) __builtin_ctz (x)
720 #define ecb_ctz64(x) __builtin_ctzll (x)
721 #define ecb_popcount32(x) __builtin_popcount (x)
722 /* no popcountll */
723#else
724 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
725 ecb_function_ int
726 ecb_ctz32 (uint32_t x)
727 {
728 int r = 0;
729
730 x &= ~x + 1; /* this isolates the lowest bit */
731
732#if ECB_branchless_on_i386
733 r += !!(x & 0xaaaaaaaa) << 0;
734 r += !!(x & 0xcccccccc) << 1;
735 r += !!(x & 0xf0f0f0f0) << 2;
736 r += !!(x & 0xff00ff00) << 3;
737 r += !!(x & 0xffff0000) << 4;
738#else
739 if (x & 0xaaaaaaaa) r += 1;
740 if (x & 0xcccccccc) r += 2;
741 if (x & 0xf0f0f0f0) r += 4;
742 if (x & 0xff00ff00) r += 8;
743 if (x & 0xffff0000) r += 16;
744#endif
745
746 return r;
747 }
748
749 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
750 ecb_function_ int
751 ecb_ctz64 (uint64_t x)
752 {
753 int shift = x & 0xffffffffU ? 0 : 32;
754 return ecb_ctz32 (x >> shift) + shift;
755 }
756
757 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
758 ecb_function_ int
759 ecb_popcount32 (uint32_t x)
760 {
761 x -= (x >> 1) & 0x55555555;
762 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
763 x = ((x >> 4) + x) & 0x0f0f0f0f;
764 x *= 0x01010101;
765
766 return x >> 24;
767 }
768
769 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
770 ecb_function_ int ecb_ld32 (uint32_t x)
771 {
772 int r = 0;
773
774 if (x >> 16) { x >>= 16; r += 16; }
775 if (x >> 8) { x >>= 8; r += 8; }
776 if (x >> 4) { x >>= 4; r += 4; }
777 if (x >> 2) { x >>= 2; r += 2; }
778 if (x >> 1) { r += 1; }
779
780 return r;
781 }
782
783 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
784 ecb_function_ int ecb_ld64 (uint64_t x)
785 {
786 int r = 0;
787
788 if (x >> 32) { x >>= 32; r += 32; }
789
790 return r + ecb_ld32 (x);
791 }
792#endif
793
794ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
795ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
796{
797 return ( (x * 0x0802U & 0x22110U)
798 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
799}
800
801ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
802ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
803{
804 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
805 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
806 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
807 x = ( x >> 8 ) | ( x << 8);
808
809 return x;
810}
811
812ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
813ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
814{
815 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
816 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
817 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
818 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
819 x = ( x >> 16 ) | ( x << 16);
820
821 return x;
822}
823
824/* popcount64 is only available on 64 bit cpus as gcc builtin */
825/* so for this version we are lazy */
826ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
827ecb_function_ int
828ecb_popcount64 (uint64_t x)
829{
830 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
831}
832
833ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
834ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
835ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
836ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
837ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
838ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
839ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
840ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
841
842ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
843ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
844ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
845ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
846ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
847ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
848ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
849ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
850
851#if ECB_GCC_VERSION(4,3)
852 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
853 #define ecb_bswap32(x) __builtin_bswap32 (x)
854 #define ecb_bswap64(x) __builtin_bswap64 (x)
855#else
856 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
857 ecb_function_ uint16_t
858 ecb_bswap16 (uint16_t x)
859 {
860 return ecb_rotl16 (x, 8);
861 }
862
863 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
864 ecb_function_ uint32_t
865 ecb_bswap32 (uint32_t x)
866 {
867 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
868 }
869
870 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
871 ecb_function_ uint64_t
872 ecb_bswap64 (uint64_t x)
873 {
874 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
875 }
876#endif
877
878#if ECB_GCC_VERSION(4,5)
879 #define ecb_unreachable() __builtin_unreachable ()
880#else
881 /* this seems to work fine, but gcc always emits a warning for it :/ */
882 ecb_inline void ecb_unreachable (void) ecb_noreturn;
883 ecb_inline void ecb_unreachable (void) { }
884#endif
885
886/* try to tell the compiler that some condition is definitely true */
887#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
888
889ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
890ecb_inline unsigned char
891ecb_byteorder_helper (void)
892{
893 const uint32_t u = 0x11223344;
894 return *(unsigned char *)&u;
895}
896
897ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
898ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
899ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
900ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
901
902#if ECB_GCC_VERSION(3,0) || ECB_C99
903 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
904#else
905 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
906#endif
907
908#if __cplusplus
909 template<typename T>
910 static inline T ecb_div_rd (T val, T div)
911 {
912 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
913 }
914 template<typename T>
915 static inline T ecb_div_ru (T val, T div)
916 {
917 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
918 }
919#else
920 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
921 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
922#endif
923
924#if ecb_cplusplus_does_not_suck
925 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
926 template<typename T, int N>
927 static inline int ecb_array_length (const T (&arr)[N])
928 {
929 return N;
930 }
931#else
932 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
933#endif
934
935#endif
936
937/* ECB.H END */
938
939#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
940/* if your architecture doesn't need memory fences, e.g. because it is
941 * single-cpu/core, or if you use libev in a project that doesn't use libev
942 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
943 * libev, in which cases the memory fences become nops.
944 * alternatively, you can remove this #error and link against libpthread,
945 * which will then provide the memory fences.
946 */
947# error "memory fences not defined for your architecture, please report"
948#endif
949
950#ifndef ECB_MEMORY_FENCE
951# define ECB_MEMORY_FENCE do { } while (0)
952# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
953# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
954#endif
955
956#define expect_false(cond) ecb_expect_false (cond)
957#define expect_true(cond) ecb_expect_true (cond)
958#define noinline ecb_noinline
959
388#define inline_size static inline 960#define inline_size ecb_inline
389 961
390#if EV_MINIMAL 962#if EV_FEATURE_CODE
963# define inline_speed ecb_inline
964#else
391# define inline_speed static noinline 965# define inline_speed static noinline
392#else
393# define inline_speed static inline
394#endif 966#endif
395 967
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 968#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 969
398#if EV_MINPRI == EV_MAXPRI 970#if EV_MINPRI == EV_MAXPRI
… …
411#define ev_active(w) ((W)(w))->active 983#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 984#define ev_at(w) ((WT)(w))->at
413 985
414#if EV_USE_REALTIME 986#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 987/* sig_atomic_t is used to avoid per-thread variables or locking but still */
416/* giving it a reasonably high chance of working on typical architetcures */ 988/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 989static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 990#endif
419 991
420#if EV_USE_MONOTONIC 992#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 993static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 994#endif
423 995
996#ifndef EV_FD_TO_WIN32_HANDLE
997# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
998#endif
999#ifndef EV_WIN32_HANDLE_TO_FD
1000# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1001#endif
1002#ifndef EV_WIN32_CLOSE_FD
1003# define EV_WIN32_CLOSE_FD(fd) close (fd)
1004#endif
1005
424#ifdef _WIN32 1006#ifdef _WIN32
425# include "ev_win32.c" 1007# include "ev_win32.c"
426#endif 1008#endif
427 1009
428/*****************************************************************************/ 1010/*****************************************************************************/
429 1011
1012/* define a suitable floor function (only used by periodics atm) */
1013
1014#if EV_USE_FLOOR
1015# include <math.h>
1016# define ev_floor(v) floor (v)
1017#else
1018
1019#include <float.h>
1020
1021/* a floor() replacement function, should be independent of ev_tstamp type */
1022static ev_tstamp noinline
1023ev_floor (ev_tstamp v)
1024{
1025 /* the choice of shift factor is not terribly important */
1026#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1027 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1028#else
1029 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1030#endif
1031
1032 /* argument too large for an unsigned long? */
1033 if (expect_false (v >= shift))
1034 {
1035 ev_tstamp f;
1036
1037 if (v == v - 1.)
1038 return v; /* very large number */
1039
1040 f = shift * ev_floor (v * (1. / shift));
1041 return f + ev_floor (v - f);
1042 }
1043
1044 /* special treatment for negative args? */
1045 if (expect_false (v < 0.))
1046 {
1047 ev_tstamp f = -ev_floor (-v);
1048
1049 return f - (f == v ? 0 : 1);
1050 }
1051
1052 /* fits into an unsigned long */
1053 return (unsigned long)v;
1054}
1055
1056#endif
1057
1058/*****************************************************************************/
1059
1060#ifdef __linux
1061# include <sys/utsname.h>
1062#endif
1063
1064static unsigned int noinline ecb_cold
1065ev_linux_version (void)
1066{
1067#ifdef __linux
1068 unsigned int v = 0;
1069 struct utsname buf;
1070 int i;
1071 char *p = buf.release;
1072
1073 if (uname (&buf))
1074 return 0;
1075
1076 for (i = 3+1; --i; )
1077 {
1078 unsigned int c = 0;
1079
1080 for (;;)
1081 {
1082 if (*p >= '0' && *p <= '9')
1083 c = c * 10 + *p++ - '0';
1084 else
1085 {
1086 p += *p == '.';
1087 break;
1088 }
1089 }
1090
1091 v = (v << 8) | c;
1092 }
1093
1094 return v;
1095#else
1096 return 0;
1097#endif
1098}
1099
1100/*****************************************************************************/
1101
1102#if EV_AVOID_STDIO
1103static void noinline ecb_cold
1104ev_printerr (const char *msg)
1105{
1106 write (STDERR_FILENO, msg, strlen (msg));
1107}
1108#endif
1109
430static void (*syserr_cb)(const char *msg); 1110static void (*syserr_cb)(const char *msg) EV_THROW;
431 1111
432void 1112void ecb_cold
433ev_set_syserr_cb (void (*cb)(const char *msg)) 1113ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
434{ 1114{
435 syserr_cb = cb; 1115 syserr_cb = cb;
436} 1116}
437 1117
438static void noinline 1118static void noinline ecb_cold
439ev_syserr (const char *msg) 1119ev_syserr (const char *msg)
440{ 1120{
441 if (!msg) 1121 if (!msg)
442 msg = "(libev) system error"; 1122 msg = "(libev) system error";
443 1123
444 if (syserr_cb) 1124 if (syserr_cb)
445 syserr_cb (msg); 1125 syserr_cb (msg);
446 else 1126 else
447 { 1127 {
1128#if EV_AVOID_STDIO
1129 ev_printerr (msg);
1130 ev_printerr (": ");
1131 ev_printerr (strerror (errno));
1132 ev_printerr ("\n");
1133#else
448 perror (msg); 1134 perror (msg);
1135#endif
449 abort (); 1136 abort ();
450 } 1137 }
451} 1138}
452 1139
453static void * 1140static void *
454ev_realloc_emul (void *ptr, long size) 1141ev_realloc_emul (void *ptr, long size)
455{ 1142{
1143#if __GLIBC__
1144 return realloc (ptr, size);
1145#else
456 /* some systems, notably openbsd and darwin, fail to properly 1146 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and 1147 * implement realloc (x, 0) (as required by both ansi c-89 and
458 * the single unix specification, so work around them here. 1148 * the single unix specification, so work around them here.
459 */ 1149 */
460 1150
461 if (size) 1151 if (size)
462 return realloc (ptr, size); 1152 return realloc (ptr, size);
463 1153
464 free (ptr); 1154 free (ptr);
465 return 0; 1155 return 0;
1156#endif
466} 1157}
467 1158
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1159static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
469 1160
470void 1161void ecb_cold
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 1162ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
472{ 1163{
473 alloc = cb; 1164 alloc = cb;
474} 1165}
475 1166
476inline_speed void * 1167inline_speed void *
… …
478{ 1169{
479 ptr = alloc (ptr, size); 1170 ptr = alloc (ptr, size);
480 1171
481 if (!ptr && size) 1172 if (!ptr && size)
482 { 1173 {
1174#if EV_AVOID_STDIO
1175 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1176#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1177 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1178#endif
484 abort (); 1179 abort ();
485 } 1180 }
486 1181
487 return ptr; 1182 return ptr;
488} 1183}
… …
490#define ev_malloc(size) ev_realloc (0, (size)) 1185#define ev_malloc(size) ev_realloc (0, (size))
491#define ev_free(ptr) ev_realloc ((ptr), 0) 1186#define ev_free(ptr) ev_realloc ((ptr), 0)
492 1187
493/*****************************************************************************/ 1188/*****************************************************************************/
494 1189
1190/* set in reify when reification needed */
1191#define EV_ANFD_REIFY 1
1192
495/* file descriptor info structure */ 1193/* file descriptor info structure */
496typedef struct 1194typedef struct
497{ 1195{
498 WL head; 1196 WL head;
499 unsigned char events; /* the events watched for */ 1197 unsigned char events; /* the events watched for */
500 unsigned char reify; /* flag set when this ANFD needs reification */ 1198 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
501 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1199 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
502 unsigned char unused; 1200 unsigned char unused;
503#if EV_USE_EPOLL 1201#if EV_USE_EPOLL
504 unsigned int egen; /* generation counter to counter epoll bugs */ 1202 unsigned int egen; /* generation counter to counter epoll bugs */
505#endif 1203#endif
506#if EV_SELECT_IS_WINSOCKET 1204#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
507 SOCKET handle; 1205 SOCKET handle;
1206#endif
1207#if EV_USE_IOCP
1208 OVERLAPPED or, ow;
508#endif 1209#endif
509} ANFD; 1210} ANFD;
510 1211
511/* stores the pending event set for a given watcher */ 1212/* stores the pending event set for a given watcher */
512typedef struct 1213typedef struct
… …
554 #undef VAR 1255 #undef VAR
555 }; 1256 };
556 #include "ev_wrap.h" 1257 #include "ev_wrap.h"
557 1258
558 static struct ev_loop default_loop_struct; 1259 static struct ev_loop default_loop_struct;
559 struct ev_loop *ev_default_loop_ptr; 1260 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
560 1261
561#else 1262#else
562 1263
563 ev_tstamp ev_rt_now; 1264 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
564 #define VAR(name,decl) static decl; 1265 #define VAR(name,decl) static decl;
565 #include "ev_vars.h" 1266 #include "ev_vars.h"
566 #undef VAR 1267 #undef VAR
567 1268
568 static int ev_default_loop_ptr; 1269 static int ev_default_loop_ptr;
569 1270
570#endif 1271#endif
571 1272
572#if EV_MINIMAL < 2 1273#if EV_FEATURE_API
573# define EV_SUSPEND_CB if (expect_false (suspend_cb)) suspend_cb (EV_A)
574# define EV_RESUME_CB if (expect_false (resume_cb )) resume_cb (EV_A) 1274# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1275# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
575# define EV_INVOKE_PENDING invoke_cb (EV_A) 1276# define EV_INVOKE_PENDING invoke_cb (EV_A)
576#else 1277#else
577# define EV_SUSPEND_CB (void)0
578# define EV_RESUME_CB (void)0 1278# define EV_RELEASE_CB (void)0
1279# define EV_ACQUIRE_CB (void)0
579# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1280# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
580#endif 1281#endif
1282
1283#define EVBREAK_RECURSE 0x80
581 1284
582/*****************************************************************************/ 1285/*****************************************************************************/
583 1286
584#ifndef EV_HAVE_EV_TIME 1287#ifndef EV_HAVE_EV_TIME
585ev_tstamp 1288ev_tstamp
586ev_time (void) 1289ev_time (void) EV_THROW
587{ 1290{
588#if EV_USE_REALTIME 1291#if EV_USE_REALTIME
589 if (expect_true (have_realtime)) 1292 if (expect_true (have_realtime))
590 { 1293 {
591 struct timespec ts; 1294 struct timespec ts;
… …
615 return ev_time (); 1318 return ev_time ();
616} 1319}
617 1320
618#if EV_MULTIPLICITY 1321#if EV_MULTIPLICITY
619ev_tstamp 1322ev_tstamp
620ev_now (EV_P) 1323ev_now (EV_P) EV_THROW
621{ 1324{
622 return ev_rt_now; 1325 return ev_rt_now;
623} 1326}
624#endif 1327#endif
625 1328
626void 1329void
627ev_sleep (ev_tstamp delay) 1330ev_sleep (ev_tstamp delay) EV_THROW
628{ 1331{
629 if (delay > 0.) 1332 if (delay > 0.)
630 { 1333 {
631#if EV_USE_NANOSLEEP 1334#if EV_USE_NANOSLEEP
632 struct timespec ts; 1335 struct timespec ts;
633 1336
634 ts.tv_sec = (time_t)delay; 1337 EV_TS_SET (ts, delay);
635 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
636
637 nanosleep (&ts, 0); 1338 nanosleep (&ts, 0);
638#elif defined(_WIN32) 1339#elif defined _WIN32
639 Sleep ((unsigned long)(delay * 1e3)); 1340 Sleep ((unsigned long)(delay * 1e3));
640#else 1341#else
641 struct timeval tv; 1342 struct timeval tv;
642 1343
643 tv.tv_sec = (time_t)delay;
644 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
645
646 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1344 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
647 /* somehting not guaranteed by newer posix versions, but guaranteed */ 1345 /* something not guaranteed by newer posix versions, but guaranteed */
648 /* by older ones */ 1346 /* by older ones */
1347 EV_TV_SET (tv, delay);
649 select (0, 0, 0, 0, &tv); 1348 select (0, 0, 0, 0, &tv);
650#endif 1349#endif
651 } 1350 }
652} 1351}
653 1352
654/*****************************************************************************/ 1353/*****************************************************************************/
655 1354
656#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1355#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
657 1356
658/* find a suitable new size for the given array, */ 1357/* find a suitable new size for the given array, */
659/* hopefully by rounding to a ncie-to-malloc size */ 1358/* hopefully by rounding to a nice-to-malloc size */
660inline_size int 1359inline_size int
661array_nextsize (int elem, int cur, int cnt) 1360array_nextsize (int elem, int cur, int cnt)
662{ 1361{
663 int ncur = cur + 1; 1362 int ncur = cur + 1;
664 1363
665 do 1364 do
666 ncur <<= 1; 1365 ncur <<= 1;
667 while (cnt > ncur); 1366 while (cnt > ncur);
668 1367
669 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1368 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
670 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1369 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
671 { 1370 {
672 ncur *= elem; 1371 ncur *= elem;
673 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1372 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
674 ncur = ncur - sizeof (void *) * 4; 1373 ncur = ncur - sizeof (void *) * 4;
… …
676 } 1375 }
677 1376
678 return ncur; 1377 return ncur;
679} 1378}
680 1379
681static noinline void * 1380static void * noinline ecb_cold
682array_realloc (int elem, void *base, int *cur, int cnt) 1381array_realloc (int elem, void *base, int *cur, int cnt)
683{ 1382{
684 *cur = array_nextsize (elem, *cur, cnt); 1383 *cur = array_nextsize (elem, *cur, cnt);
685 return ev_realloc (base, elem * *cur); 1384 return ev_realloc (base, elem * *cur);
686} 1385}
… …
689 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1388 memset ((void *)(base), 0, sizeof (*(base)) * (count))
690 1389
691#define array_needsize(type,base,cur,cnt,init) \ 1390#define array_needsize(type,base,cur,cnt,init) \
692 if (expect_false ((cnt) > (cur))) \ 1391 if (expect_false ((cnt) > (cur))) \
693 { \ 1392 { \
694 int ocur_ = (cur); \ 1393 int ecb_unused ocur_ = (cur); \
695 (base) = (type *)array_realloc \ 1394 (base) = (type *)array_realloc \
696 (sizeof (type), (base), &(cur), (cnt)); \ 1395 (sizeof (type), (base), &(cur), (cnt)); \
697 init ((base) + (ocur_), (cur) - ocur_); \ 1396 init ((base) + (ocur_), (cur) - ocur_); \
698 } 1397 }
699 1398
… …
717pendingcb (EV_P_ ev_prepare *w, int revents) 1416pendingcb (EV_P_ ev_prepare *w, int revents)
718{ 1417{
719} 1418}
720 1419
721void noinline 1420void noinline
722ev_feed_event (EV_P_ void *w, int revents) 1421ev_feed_event (EV_P_ void *w, int revents) EV_THROW
723{ 1422{
724 W w_ = (W)w; 1423 W w_ = (W)w;
725 int pri = ABSPRI (w_); 1424 int pri = ABSPRI (w_);
726 1425
727 if (expect_false (w_->pending)) 1426 if (expect_false (w_->pending))
… …
731 w_->pending = ++pendingcnt [pri]; 1430 w_->pending = ++pendingcnt [pri];
732 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1431 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
733 pendings [pri][w_->pending - 1].w = w_; 1432 pendings [pri][w_->pending - 1].w = w_;
734 pendings [pri][w_->pending - 1].events = revents; 1433 pendings [pri][w_->pending - 1].events = revents;
735 } 1434 }
1435
1436 pendingpri = NUMPRI - 1;
736} 1437}
737 1438
738inline_speed void 1439inline_speed void
739feed_reverse (EV_P_ W w) 1440feed_reverse (EV_P_ W w)
740{ 1441{
… …
760} 1461}
761 1462
762/*****************************************************************************/ 1463/*****************************************************************************/
763 1464
764inline_speed void 1465inline_speed void
765fd_event (EV_P_ int fd, int revents) 1466fd_event_nocheck (EV_P_ int fd, int revents)
766{ 1467{
767 ANFD *anfd = anfds + fd; 1468 ANFD *anfd = anfds + fd;
768 ev_io *w; 1469 ev_io *w;
769 1470
770 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1471 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
774 if (ev) 1475 if (ev)
775 ev_feed_event (EV_A_ (W)w, ev); 1476 ev_feed_event (EV_A_ (W)w, ev);
776 } 1477 }
777} 1478}
778 1479
1480/* do not submit kernel events for fds that have reify set */
1481/* because that means they changed while we were polling for new events */
1482inline_speed void
1483fd_event (EV_P_ int fd, int revents)
1484{
1485 ANFD *anfd = anfds + fd;
1486
1487 if (expect_true (!anfd->reify))
1488 fd_event_nocheck (EV_A_ fd, revents);
1489}
1490
779void 1491void
780ev_feed_fd_event (EV_P_ int fd, int revents) 1492ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
781{ 1493{
782 if (fd >= 0 && fd < anfdmax) 1494 if (fd >= 0 && fd < anfdmax)
783 fd_event (EV_A_ fd, revents); 1495 fd_event_nocheck (EV_A_ fd, revents);
784} 1496}
785 1497
786/* make sure the external fd watch events are in-sync */ 1498/* make sure the external fd watch events are in-sync */
787/* with the kernel/libev internal state */ 1499/* with the kernel/libev internal state */
788inline_size void 1500inline_size void
789fd_reify (EV_P) 1501fd_reify (EV_P)
790{ 1502{
791 int i; 1503 int i;
792 1504
1505#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1506 for (i = 0; i < fdchangecnt; ++i)
1507 {
1508 int fd = fdchanges [i];
1509 ANFD *anfd = anfds + fd;
1510
1511 if (anfd->reify & EV__IOFDSET && anfd->head)
1512 {
1513 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1514
1515 if (handle != anfd->handle)
1516 {
1517 unsigned long arg;
1518
1519 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1520
1521 /* handle changed, but fd didn't - we need to do it in two steps */
1522 backend_modify (EV_A_ fd, anfd->events, 0);
1523 anfd->events = 0;
1524 anfd->handle = handle;
1525 }
1526 }
1527 }
1528#endif
1529
793 for (i = 0; i < fdchangecnt; ++i) 1530 for (i = 0; i < fdchangecnt; ++i)
794 { 1531 {
795 int fd = fdchanges [i]; 1532 int fd = fdchanges [i];
796 ANFD *anfd = anfds + fd; 1533 ANFD *anfd = anfds + fd;
797 ev_io *w; 1534 ev_io *w;
798 1535
799 unsigned char events = 0; 1536 unsigned char o_events = anfd->events;
1537 unsigned char o_reify = anfd->reify;
800 1538
801 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1539 anfd->reify = 0;
802 events |= (unsigned char)w->events;
803 1540
804#if EV_SELECT_IS_WINSOCKET 1541 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
805 if (events)
806 { 1542 {
807 unsigned long arg; 1543 anfd->events = 0;
808 #ifdef EV_FD_TO_WIN32_HANDLE 1544
809 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1545 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
810 #else 1546 anfd->events |= (unsigned char)w->events;
811 anfd->handle = _get_osfhandle (fd); 1547
812 #endif 1548 if (o_events != anfd->events)
813 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1549 o_reify = EV__IOFDSET; /* actually |= */
814 } 1550 }
815#endif
816 1551
817 { 1552 if (o_reify & EV__IOFDSET)
818 unsigned char o_events = anfd->events;
819 unsigned char o_reify = anfd->reify;
820
821 anfd->reify = 0;
822 anfd->events = events;
823
824 if (o_events != events || o_reify & EV__IOFDSET)
825 backend_modify (EV_A_ fd, o_events, events); 1553 backend_modify (EV_A_ fd, o_events, anfd->events);
826 }
827 } 1554 }
828 1555
829 fdchangecnt = 0; 1556 fdchangecnt = 0;
830} 1557}
831 1558
… …
843 fdchanges [fdchangecnt - 1] = fd; 1570 fdchanges [fdchangecnt - 1] = fd;
844 } 1571 }
845} 1572}
846 1573
847/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1574/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
848inline_speed void 1575inline_speed void ecb_cold
849fd_kill (EV_P_ int fd) 1576fd_kill (EV_P_ int fd)
850{ 1577{
851 ev_io *w; 1578 ev_io *w;
852 1579
853 while ((w = (ev_io *)anfds [fd].head)) 1580 while ((w = (ev_io *)anfds [fd].head))
… …
855 ev_io_stop (EV_A_ w); 1582 ev_io_stop (EV_A_ w);
856 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1583 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
857 } 1584 }
858} 1585}
859 1586
860/* check whether the given fd is atcually valid, for error recovery */ 1587/* check whether the given fd is actually valid, for error recovery */
861inline_size int 1588inline_size int ecb_cold
862fd_valid (int fd) 1589fd_valid (int fd)
863{ 1590{
864#ifdef _WIN32 1591#ifdef _WIN32
865 return _get_osfhandle (fd) != -1; 1592 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
866#else 1593#else
867 return fcntl (fd, F_GETFD) != -1; 1594 return fcntl (fd, F_GETFD) != -1;
868#endif 1595#endif
869} 1596}
870 1597
871/* called on EBADF to verify fds */ 1598/* called on EBADF to verify fds */
872static void noinline 1599static void noinline ecb_cold
873fd_ebadf (EV_P) 1600fd_ebadf (EV_P)
874{ 1601{
875 int fd; 1602 int fd;
876 1603
877 for (fd = 0; fd < anfdmax; ++fd) 1604 for (fd = 0; fd < anfdmax; ++fd)
… …
879 if (!fd_valid (fd) && errno == EBADF) 1606 if (!fd_valid (fd) && errno == EBADF)
880 fd_kill (EV_A_ fd); 1607 fd_kill (EV_A_ fd);
881} 1608}
882 1609
883/* called on ENOMEM in select/poll to kill some fds and retry */ 1610/* called on ENOMEM in select/poll to kill some fds and retry */
884static void noinline 1611static void noinline ecb_cold
885fd_enomem (EV_P) 1612fd_enomem (EV_P)
886{ 1613{
887 int fd; 1614 int fd;
888 1615
889 for (fd = anfdmax; fd--; ) 1616 for (fd = anfdmax; fd--; )
890 if (anfds [fd].events) 1617 if (anfds [fd].events)
891 { 1618 {
892 fd_kill (EV_A_ fd); 1619 fd_kill (EV_A_ fd);
893 return; 1620 break;
894 } 1621 }
895} 1622}
896 1623
897/* usually called after fork if backend needs to re-arm all fds from scratch */ 1624/* usually called after fork if backend needs to re-arm all fds from scratch */
898static void noinline 1625static void noinline
… …
903 for (fd = 0; fd < anfdmax; ++fd) 1630 for (fd = 0; fd < anfdmax; ++fd)
904 if (anfds [fd].events) 1631 if (anfds [fd].events)
905 { 1632 {
906 anfds [fd].events = 0; 1633 anfds [fd].events = 0;
907 anfds [fd].emask = 0; 1634 anfds [fd].emask = 0;
908 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1635 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
909 } 1636 }
910} 1637}
911 1638
1639/* used to prepare libev internal fd's */
1640/* this is not fork-safe */
1641inline_speed void
1642fd_intern (int fd)
1643{
1644#ifdef _WIN32
1645 unsigned long arg = 1;
1646 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1647#else
1648 fcntl (fd, F_SETFD, FD_CLOEXEC);
1649 fcntl (fd, F_SETFL, O_NONBLOCK);
1650#endif
1651}
1652
912/*****************************************************************************/ 1653/*****************************************************************************/
913 1654
914/* 1655/*
915 * the heap functions want a real array index. array index 0 uis guaranteed to not 1656 * the heap functions want a real array index. array index 0 is guaranteed to not
916 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1657 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
917 * the branching factor of the d-tree. 1658 * the branching factor of the d-tree.
918 */ 1659 */
919 1660
920/* 1661/*
… …
988 1729
989 for (;;) 1730 for (;;)
990 { 1731 {
991 int c = k << 1; 1732 int c = k << 1;
992 1733
993 if (c > N + HEAP0 - 1) 1734 if (c >= N + HEAP0)
994 break; 1735 break;
995 1736
996 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1737 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
997 ? 1 : 0; 1738 ? 1 : 0;
998 1739
… …
1034 1775
1035/* move an element suitably so it is in a correct place */ 1776/* move an element suitably so it is in a correct place */
1036inline_size void 1777inline_size void
1037adjustheap (ANHE *heap, int N, int k) 1778adjustheap (ANHE *heap, int N, int k)
1038{ 1779{
1039 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1780 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1040 upheap (heap, k); 1781 upheap (heap, k);
1041 else 1782 else
1042 downheap (heap, N, k); 1783 downheap (heap, N, k);
1043} 1784}
1044 1785
… …
1057/*****************************************************************************/ 1798/*****************************************************************************/
1058 1799
1059/* associate signal watchers to a signal signal */ 1800/* associate signal watchers to a signal signal */
1060typedef struct 1801typedef struct
1061{ 1802{
1803 EV_ATOMIC_T pending;
1804#if EV_MULTIPLICITY
1805 EV_P;
1806#endif
1062 WL head; 1807 WL head;
1063 EV_ATOMIC_T gotsig;
1064} ANSIG; 1808} ANSIG;
1065 1809
1066static ANSIG *signals; 1810static ANSIG signals [EV_NSIG - 1];
1067static int signalmax;
1068
1069static EV_ATOMIC_T gotsig;
1070 1811
1071/*****************************************************************************/ 1812/*****************************************************************************/
1072 1813
1073/* used to prepare libev internal fd's */ 1814#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1074/* this is not fork-safe */
1075inline_speed void
1076fd_intern (int fd)
1077{
1078#ifdef _WIN32
1079 unsigned long arg = 1;
1080 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1081#else
1082 fcntl (fd, F_SETFD, FD_CLOEXEC);
1083 fcntl (fd, F_SETFL, O_NONBLOCK);
1084#endif
1085}
1086 1815
1087static void noinline 1816static void noinline ecb_cold
1088evpipe_init (EV_P) 1817evpipe_init (EV_P)
1089{ 1818{
1090 if (!ev_is_active (&pipe_w)) 1819 if (!ev_is_active (&pipe_w))
1091 { 1820 {
1092#if EV_USE_EVENTFD 1821# if EV_USE_EVENTFD
1822 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1823 if (evfd < 0 && errno == EINVAL)
1093 if ((evfd = eventfd (0, 0)) >= 0) 1824 evfd = eventfd (0, 0);
1825
1826 if (evfd >= 0)
1094 { 1827 {
1095 evpipe [0] = -1; 1828 evpipe [0] = -1;
1096 fd_intern (evfd); 1829 fd_intern (evfd); /* doing it twice doesn't hurt */
1097 ev_io_set (&pipe_w, evfd, EV_READ); 1830 ev_io_set (&pipe_w, evfd, EV_READ);
1098 } 1831 }
1099 else 1832 else
1100#endif 1833# endif
1101 { 1834 {
1102 while (pipe (evpipe)) 1835 while (pipe (evpipe))
1103 ev_syserr ("(libev) error creating signal/async pipe"); 1836 ev_syserr ("(libev) error creating signal/async pipe");
1104 1837
1105 fd_intern (evpipe [0]); 1838 fd_intern (evpipe [0]);
… …
1110 ev_io_start (EV_A_ &pipe_w); 1843 ev_io_start (EV_A_ &pipe_w);
1111 ev_unref (EV_A); /* watcher should not keep loop alive */ 1844 ev_unref (EV_A); /* watcher should not keep loop alive */
1112 } 1845 }
1113} 1846}
1114 1847
1115inline_size void 1848inline_speed void
1116evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1849evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1117{ 1850{
1118 if (!*flag) 1851 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1852
1853 if (expect_true (*flag))
1854 return;
1855
1856 *flag = 1;
1857
1858 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1859
1860 pipe_write_skipped = 1;
1861
1862 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1863
1864 if (pipe_write_wanted)
1119 { 1865 {
1866 int old_errno;
1867
1868 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1869
1120 int old_errno = errno; /* save errno because write might clobber it */ 1870 old_errno = errno; /* save errno because write will clobber it */
1121
1122 *flag = 1;
1123 1871
1124#if EV_USE_EVENTFD 1872#if EV_USE_EVENTFD
1125 if (evfd >= 0) 1873 if (evfd >= 0)
1126 { 1874 {
1127 uint64_t counter = 1; 1875 uint64_t counter = 1;
1128 write (evfd, &counter, sizeof (uint64_t)); 1876 write (evfd, &counter, sizeof (uint64_t));
1129 } 1877 }
1130 else 1878 else
1131#endif 1879#endif
1880 {
1881#ifdef _WIN32
1882 WSABUF buf;
1883 DWORD sent;
1884 buf.buf = &buf;
1885 buf.len = 1;
1886 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1887#else
1132 write (evpipe [1], &old_errno, 1); 1888 write (evpipe [1], &(evpipe [1]), 1);
1889#endif
1890 }
1133 1891
1134 errno = old_errno; 1892 errno = old_errno;
1135 } 1893 }
1136} 1894}
1137 1895
1138/* called whenever the libev signal pipe */ 1896/* called whenever the libev signal pipe */
1139/* got some events (signal, async) */ 1897/* got some events (signal, async) */
1140static void 1898static void
1141pipecb (EV_P_ ev_io *iow, int revents) 1899pipecb (EV_P_ ev_io *iow, int revents)
1142{ 1900{
1901 int i;
1902
1903 if (revents & EV_READ)
1904 {
1143#if EV_USE_EVENTFD 1905#if EV_USE_EVENTFD
1144 if (evfd >= 0) 1906 if (evfd >= 0)
1145 { 1907 {
1146 uint64_t counter; 1908 uint64_t counter;
1147 read (evfd, &counter, sizeof (uint64_t)); 1909 read (evfd, &counter, sizeof (uint64_t));
1148 } 1910 }
1149 else 1911 else
1150#endif 1912#endif
1151 { 1913 {
1152 char dummy; 1914 char dummy[4];
1915#ifdef _WIN32
1916 WSABUF buf;
1917 DWORD recvd;
1918 buf.buf = dummy;
1919 buf.len = sizeof (dummy);
1920 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, 0, 0, 0);
1921#else
1153 read (evpipe [0], &dummy, 1); 1922 read (evpipe [0], &dummy, sizeof (dummy));
1923#endif
1924 }
1925 }
1926
1927 pipe_write_skipped = 0;
1928
1929 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1930
1931#if EV_SIGNAL_ENABLE
1932 if (sig_pending)
1154 } 1933 {
1934 sig_pending = 0;
1155 1935
1156 if (gotsig && ev_is_default_loop (EV_A)) 1936 ECB_MEMORY_FENCE_RELEASE;
1157 {
1158 int signum;
1159 gotsig = 0;
1160 1937
1161 for (signum = signalmax; signum--; ) 1938 for (i = EV_NSIG - 1; i--; )
1162 if (signals [signum].gotsig) 1939 if (expect_false (signals [i].pending))
1163 ev_feed_signal_event (EV_A_ signum + 1); 1940 ev_feed_signal_event (EV_A_ i + 1);
1164 } 1941 }
1942#endif
1165 1943
1166#if EV_ASYNC_ENABLE 1944#if EV_ASYNC_ENABLE
1167 if (gotasync) 1945 if (async_pending)
1168 { 1946 {
1169 int i; 1947 async_pending = 0;
1170 gotasync = 0; 1948
1949 ECB_MEMORY_FENCE_RELEASE;
1171 1950
1172 for (i = asynccnt; i--; ) 1951 for (i = asynccnt; i--; )
1173 if (asyncs [i]->sent) 1952 if (asyncs [i]->sent)
1174 { 1953 {
1175 asyncs [i]->sent = 0; 1954 asyncs [i]->sent = 0;
… …
1179#endif 1958#endif
1180} 1959}
1181 1960
1182/*****************************************************************************/ 1961/*****************************************************************************/
1183 1962
1963void
1964ev_feed_signal (int signum) EV_THROW
1965{
1966#if EV_MULTIPLICITY
1967 EV_P = signals [signum - 1].loop;
1968
1969 if (!EV_A)
1970 return;
1971#endif
1972
1973 if (!ev_active (&pipe_w))
1974 return;
1975
1976 signals [signum - 1].pending = 1;
1977 evpipe_write (EV_A_ &sig_pending);
1978}
1979
1184static void 1980static void
1185ev_sighandler (int signum) 1981ev_sighandler (int signum)
1186{ 1982{
1983#ifdef _WIN32
1984 signal (signum, ev_sighandler);
1985#endif
1986
1987 ev_feed_signal (signum);
1988}
1989
1990void noinline
1991ev_feed_signal_event (EV_P_ int signum) EV_THROW
1992{
1993 WL w;
1994
1995 if (expect_false (signum <= 0 || signum > EV_NSIG))
1996 return;
1997
1998 --signum;
1999
1187#if EV_MULTIPLICITY 2000#if EV_MULTIPLICITY
1188 struct ev_loop *loop = &default_loop_struct; 2001 /* it is permissible to try to feed a signal to the wrong loop */
1189#endif 2002 /* or, likely more useful, feeding a signal nobody is waiting for */
1190 2003
1191#if _WIN32 2004 if (expect_false (signals [signum].loop != EV_A))
1192 signal (signum, ev_sighandler);
1193#endif
1194
1195 signals [signum - 1].gotsig = 1;
1196 evpipe_write (EV_A_ &gotsig);
1197}
1198
1199void noinline
1200ev_feed_signal_event (EV_P_ int signum)
1201{
1202 WL w;
1203
1204#if EV_MULTIPLICITY
1205 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1206#endif
1207
1208 --signum;
1209
1210 if (signum < 0 || signum >= signalmax)
1211 return; 2005 return;
2006#endif
1212 2007
1213 signals [signum].gotsig = 0; 2008 signals [signum].pending = 0;
1214 2009
1215 for (w = signals [signum].head; w; w = w->next) 2010 for (w = signals [signum].head; w; w = w->next)
1216 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2011 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1217} 2012}
1218 2013
2014#if EV_USE_SIGNALFD
2015static void
2016sigfdcb (EV_P_ ev_io *iow, int revents)
2017{
2018 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2019
2020 for (;;)
2021 {
2022 ssize_t res = read (sigfd, si, sizeof (si));
2023
2024 /* not ISO-C, as res might be -1, but works with SuS */
2025 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2026 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2027
2028 if (res < (ssize_t)sizeof (si))
2029 break;
2030 }
2031}
2032#endif
2033
2034#endif
2035
1219/*****************************************************************************/ 2036/*****************************************************************************/
1220 2037
2038#if EV_CHILD_ENABLE
1221static WL childs [EV_PID_HASHSIZE]; 2039static WL childs [EV_PID_HASHSIZE];
1222
1223#ifndef _WIN32
1224 2040
1225static ev_signal childev; 2041static ev_signal childev;
1226 2042
1227#ifndef WIFCONTINUED 2043#ifndef WIFCONTINUED
1228# define WIFCONTINUED(status) 0 2044# define WIFCONTINUED(status) 0
… …
1233child_reap (EV_P_ int chain, int pid, int status) 2049child_reap (EV_P_ int chain, int pid, int status)
1234{ 2050{
1235 ev_child *w; 2051 ev_child *w;
1236 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2052 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1237 2053
1238 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2054 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1239 { 2055 {
1240 if ((w->pid == pid || !w->pid) 2056 if ((w->pid == pid || !w->pid)
1241 && (!traced || (w->flags & 1))) 2057 && (!traced || (w->flags & 1)))
1242 { 2058 {
1243 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2059 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1268 /* make sure we are called again until all children have been reaped */ 2084 /* make sure we are called again until all children have been reaped */
1269 /* we need to do it this way so that the callback gets called before we continue */ 2085 /* we need to do it this way so that the callback gets called before we continue */
1270 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2086 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1271 2087
1272 child_reap (EV_A_ pid, pid, status); 2088 child_reap (EV_A_ pid, pid, status);
1273 if (EV_PID_HASHSIZE > 1) 2089 if ((EV_PID_HASHSIZE) > 1)
1274 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2090 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1275} 2091}
1276 2092
1277#endif 2093#endif
1278 2094
1279/*****************************************************************************/ 2095/*****************************************************************************/
1280 2096
2097#if EV_USE_IOCP
2098# include "ev_iocp.c"
2099#endif
1281#if EV_USE_PORT 2100#if EV_USE_PORT
1282# include "ev_port.c" 2101# include "ev_port.c"
1283#endif 2102#endif
1284#if EV_USE_KQUEUE 2103#if EV_USE_KQUEUE
1285# include "ev_kqueue.c" 2104# include "ev_kqueue.c"
… …
1292#endif 2111#endif
1293#if EV_USE_SELECT 2112#if EV_USE_SELECT
1294# include "ev_select.c" 2113# include "ev_select.c"
1295#endif 2114#endif
1296 2115
1297int 2116int ecb_cold
1298ev_version_major (void) 2117ev_version_major (void) EV_THROW
1299{ 2118{
1300 return EV_VERSION_MAJOR; 2119 return EV_VERSION_MAJOR;
1301} 2120}
1302 2121
1303int 2122int ecb_cold
1304ev_version_minor (void) 2123ev_version_minor (void) EV_THROW
1305{ 2124{
1306 return EV_VERSION_MINOR; 2125 return EV_VERSION_MINOR;
1307} 2126}
1308 2127
1309/* return true if we are running with elevated privileges and should ignore env variables */ 2128/* return true if we are running with elevated privileges and should ignore env variables */
1310int inline_size 2129int inline_size ecb_cold
1311enable_secure (void) 2130enable_secure (void)
1312{ 2131{
1313#ifdef _WIN32 2132#ifdef _WIN32
1314 return 0; 2133 return 0;
1315#else 2134#else
1316 return getuid () != geteuid () 2135 return getuid () != geteuid ()
1317 || getgid () != getegid (); 2136 || getgid () != getegid ();
1318#endif 2137#endif
1319} 2138}
1320 2139
1321unsigned int 2140unsigned int ecb_cold
1322ev_supported_backends (void) 2141ev_supported_backends (void) EV_THROW
1323{ 2142{
1324 unsigned int flags = 0; 2143 unsigned int flags = 0;
1325 2144
1326 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2145 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1327 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2146 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1330 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2149 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1331 2150
1332 return flags; 2151 return flags;
1333} 2152}
1334 2153
1335unsigned int 2154unsigned int ecb_cold
1336ev_recommended_backends (void) 2155ev_recommended_backends (void) EV_THROW
1337{ 2156{
1338 unsigned int flags = ev_supported_backends (); 2157 unsigned int flags = ev_supported_backends ();
1339 2158
1340#ifndef __NetBSD__ 2159#ifndef __NetBSD__
1341 /* kqueue is borked on everything but netbsd apparently */ 2160 /* kqueue is borked on everything but netbsd apparently */
… …
1345#ifdef __APPLE__ 2164#ifdef __APPLE__
1346 /* only select works correctly on that "unix-certified" platform */ 2165 /* only select works correctly on that "unix-certified" platform */
1347 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2166 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1348 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2167 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1349#endif 2168#endif
2169#ifdef __FreeBSD__
2170 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2171#endif
1350 2172
1351 return flags; 2173 return flags;
1352} 2174}
1353 2175
2176unsigned int ecb_cold
2177ev_embeddable_backends (void) EV_THROW
2178{
2179 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2180
2181 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2182 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2183 flags &= ~EVBACKEND_EPOLL;
2184
2185 return flags;
2186}
2187
1354unsigned int 2188unsigned int
1355ev_embeddable_backends (void) 2189ev_backend (EV_P) EV_THROW
1356{ 2190{
1357 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2191 return backend;
1358
1359 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1360 /* please fix it and tell me how to detect the fix */
1361 flags &= ~EVBACKEND_EPOLL;
1362
1363 return flags;
1364} 2192}
1365 2193
2194#if EV_FEATURE_API
1366unsigned int 2195unsigned int
1367ev_backend (EV_P) 2196ev_iteration (EV_P) EV_THROW
1368{ 2197{
1369 return backend; 2198 return loop_count;
1370} 2199}
1371 2200
1372#if EV_MINIMAL < 2
1373unsigned int 2201unsigned int
1374ev_loop_count (EV_P) 2202ev_depth (EV_P) EV_THROW
1375{
1376 return loop_count;
1377}
1378
1379unsigned int
1380ev_loop_depth (EV_P)
1381{ 2203{
1382 return loop_depth; 2204 return loop_depth;
1383} 2205}
1384 2206
1385void 2207void
1386ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2208ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1387{ 2209{
1388 io_blocktime = interval; 2210 io_blocktime = interval;
1389} 2211}
1390 2212
1391void 2213void
1392ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2214ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1393{ 2215{
1394 timeout_blocktime = interval; 2216 timeout_blocktime = interval;
1395} 2217}
1396 2218
1397void 2219void
1398ev_set_userdata (EV_P_ void *data) 2220ev_set_userdata (EV_P_ void *data) EV_THROW
1399{ 2221{
1400 userdata = data; 2222 userdata = data;
1401} 2223}
1402 2224
1403void * 2225void *
1404ev_userdata (EV_P) 2226ev_userdata (EV_P) EV_THROW
1405{ 2227{
1406 return userdata; 2228 return userdata;
1407} 2229}
1408 2230
2231void
1409void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2232ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1410{ 2233{
1411 invoke_cb = invoke_pending_cb; 2234 invoke_cb = invoke_pending_cb;
1412} 2235}
1413 2236
1414void ev_set_blocking_cb (EV_P_ void (*suspend_cb_)(EV_P), void (*resume_cb_)(EV_P)) 2237void
2238ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1415{ 2239{
1416 suspend_cb = suspend_cb_; 2240 release_cb = release;
1417 resume_cb = resume_cb_; 2241 acquire_cb = acquire;
1418} 2242}
1419#endif 2243#endif
1420 2244
1421/* initialise a loop structure, must be zero-initialised */ 2245/* initialise a loop structure, must be zero-initialised */
1422static void noinline 2246static void noinline ecb_cold
1423loop_init (EV_P_ unsigned int flags) 2247loop_init (EV_P_ unsigned int flags) EV_THROW
1424{ 2248{
1425 if (!backend) 2249 if (!backend)
1426 { 2250 {
2251 origflags = flags;
2252
1427#if EV_USE_REALTIME 2253#if EV_USE_REALTIME
1428 if (!have_realtime) 2254 if (!have_realtime)
1429 { 2255 {
1430 struct timespec ts; 2256 struct timespec ts;
1431 2257
… …
1442 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2268 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1443 have_monotonic = 1; 2269 have_monotonic = 1;
1444 } 2270 }
1445#endif 2271#endif
1446 2272
1447 ev_rt_now = ev_time ();
1448 mn_now = get_clock ();
1449 now_floor = mn_now;
1450 rtmn_diff = ev_rt_now - mn_now;
1451#if EV_MINIMAL < 2
1452 invoke_cb = ev_invoke_pending;
1453#endif
1454
1455 io_blocktime = 0.;
1456 timeout_blocktime = 0.;
1457 backend = 0;
1458 backend_fd = -1;
1459 gotasync = 0;
1460#if EV_USE_INOTIFY
1461 fs_fd = -2;
1462#endif
1463
1464 /* pid check not overridable via env */ 2273 /* pid check not overridable via env */
1465#ifndef _WIN32 2274#ifndef _WIN32
1466 if (flags & EVFLAG_FORKCHECK) 2275 if (flags & EVFLAG_FORKCHECK)
1467 curpid = getpid (); 2276 curpid = getpid ();
1468#endif 2277#endif
… …
1470 if (!(flags & EVFLAG_NOENV) 2279 if (!(flags & EVFLAG_NOENV)
1471 && !enable_secure () 2280 && !enable_secure ()
1472 && getenv ("LIBEV_FLAGS")) 2281 && getenv ("LIBEV_FLAGS"))
1473 flags = atoi (getenv ("LIBEV_FLAGS")); 2282 flags = atoi (getenv ("LIBEV_FLAGS"));
1474 2283
1475 if (!(flags & 0x0000ffffU)) 2284 ev_rt_now = ev_time ();
2285 mn_now = get_clock ();
2286 now_floor = mn_now;
2287 rtmn_diff = ev_rt_now - mn_now;
2288#if EV_FEATURE_API
2289 invoke_cb = ev_invoke_pending;
2290#endif
2291
2292 io_blocktime = 0.;
2293 timeout_blocktime = 0.;
2294 backend = 0;
2295 backend_fd = -1;
2296 sig_pending = 0;
2297#if EV_ASYNC_ENABLE
2298 async_pending = 0;
2299#endif
2300 pipe_write_skipped = 0;
2301 pipe_write_wanted = 0;
2302#if EV_USE_INOTIFY
2303 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2304#endif
2305#if EV_USE_SIGNALFD
2306 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2307#endif
2308
2309 if (!(flags & EVBACKEND_MASK))
1476 flags |= ev_recommended_backends (); 2310 flags |= ev_recommended_backends ();
1477 2311
2312#if EV_USE_IOCP
2313 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2314#endif
1478#if EV_USE_PORT 2315#if EV_USE_PORT
1479 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2316 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1480#endif 2317#endif
1481#if EV_USE_KQUEUE 2318#if EV_USE_KQUEUE
1482 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2319 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1491 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2328 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1492#endif 2329#endif
1493 2330
1494 ev_prepare_init (&pending_w, pendingcb); 2331 ev_prepare_init (&pending_w, pendingcb);
1495 2332
2333#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1496 ev_init (&pipe_w, pipecb); 2334 ev_init (&pipe_w, pipecb);
1497 ev_set_priority (&pipe_w, EV_MAXPRI); 2335 ev_set_priority (&pipe_w, EV_MAXPRI);
2336#endif
1498 } 2337 }
1499} 2338}
1500 2339
1501/* free up a loop structure */ 2340/* free up a loop structure */
1502static void noinline 2341void ecb_cold
1503loop_destroy (EV_P) 2342ev_loop_destroy (EV_P)
1504{ 2343{
1505 int i; 2344 int i;
1506 2345
2346#if EV_MULTIPLICITY
2347 /* mimic free (0) */
2348 if (!EV_A)
2349 return;
2350#endif
2351
2352#if EV_CLEANUP_ENABLE
2353 /* queue cleanup watchers (and execute them) */
2354 if (expect_false (cleanupcnt))
2355 {
2356 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2357 EV_INVOKE_PENDING;
2358 }
2359#endif
2360
2361#if EV_CHILD_ENABLE
2362 if (ev_is_active (&childev))
2363 {
2364 ev_ref (EV_A); /* child watcher */
2365 ev_signal_stop (EV_A_ &childev);
2366 }
2367#endif
2368
1507 if (ev_is_active (&pipe_w)) 2369 if (ev_is_active (&pipe_w))
1508 { 2370 {
1509 ev_ref (EV_A); /* signal watcher */ 2371 /*ev_ref (EV_A);*/
1510 ev_io_stop (EV_A_ &pipe_w); 2372 /*ev_io_stop (EV_A_ &pipe_w);*/
1511 2373
1512#if EV_USE_EVENTFD 2374#if EV_USE_EVENTFD
1513 if (evfd >= 0) 2375 if (evfd >= 0)
1514 close (evfd); 2376 close (evfd);
1515#endif 2377#endif
1516 2378
1517 if (evpipe [0] >= 0) 2379 if (evpipe [0] >= 0)
1518 { 2380 {
1519 close (evpipe [0]); 2381 EV_WIN32_CLOSE_FD (evpipe [0]);
1520 close (evpipe [1]); 2382 EV_WIN32_CLOSE_FD (evpipe [1]);
1521 } 2383 }
1522 } 2384 }
2385
2386#if EV_USE_SIGNALFD
2387 if (ev_is_active (&sigfd_w))
2388 close (sigfd);
2389#endif
1523 2390
1524#if EV_USE_INOTIFY 2391#if EV_USE_INOTIFY
1525 if (fs_fd >= 0) 2392 if (fs_fd >= 0)
1526 close (fs_fd); 2393 close (fs_fd);
1527#endif 2394#endif
1528 2395
1529 if (backend_fd >= 0) 2396 if (backend_fd >= 0)
1530 close (backend_fd); 2397 close (backend_fd);
1531 2398
2399#if EV_USE_IOCP
2400 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2401#endif
1532#if EV_USE_PORT 2402#if EV_USE_PORT
1533 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2403 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1534#endif 2404#endif
1535#if EV_USE_KQUEUE 2405#if EV_USE_KQUEUE
1536 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2406 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1551#if EV_IDLE_ENABLE 2421#if EV_IDLE_ENABLE
1552 array_free (idle, [i]); 2422 array_free (idle, [i]);
1553#endif 2423#endif
1554 } 2424 }
1555 2425
1556 ev_free (anfds); anfdmax = 0; 2426 ev_free (anfds); anfds = 0; anfdmax = 0;
1557 2427
1558 /* have to use the microsoft-never-gets-it-right macro */ 2428 /* have to use the microsoft-never-gets-it-right macro */
1559 array_free (rfeed, EMPTY); 2429 array_free (rfeed, EMPTY);
1560 array_free (fdchange, EMPTY); 2430 array_free (fdchange, EMPTY);
1561 array_free (timer, EMPTY); 2431 array_free (timer, EMPTY);
… …
1563 array_free (periodic, EMPTY); 2433 array_free (periodic, EMPTY);
1564#endif 2434#endif
1565#if EV_FORK_ENABLE 2435#if EV_FORK_ENABLE
1566 array_free (fork, EMPTY); 2436 array_free (fork, EMPTY);
1567#endif 2437#endif
2438#if EV_CLEANUP_ENABLE
2439 array_free (cleanup, EMPTY);
2440#endif
1568 array_free (prepare, EMPTY); 2441 array_free (prepare, EMPTY);
1569 array_free (check, EMPTY); 2442 array_free (check, EMPTY);
1570#if EV_ASYNC_ENABLE 2443#if EV_ASYNC_ENABLE
1571 array_free (async, EMPTY); 2444 array_free (async, EMPTY);
1572#endif 2445#endif
1573 2446
1574 backend = 0; 2447 backend = 0;
2448
2449#if EV_MULTIPLICITY
2450 if (ev_is_default_loop (EV_A))
2451#endif
2452 ev_default_loop_ptr = 0;
2453#if EV_MULTIPLICITY
2454 else
2455 ev_free (EV_A);
2456#endif
1575} 2457}
1576 2458
1577#if EV_USE_INOTIFY 2459#if EV_USE_INOTIFY
1578inline_size void infy_fork (EV_P); 2460inline_size void infy_fork (EV_P);
1579#endif 2461#endif
… …
1594 infy_fork (EV_A); 2476 infy_fork (EV_A);
1595#endif 2477#endif
1596 2478
1597 if (ev_is_active (&pipe_w)) 2479 if (ev_is_active (&pipe_w))
1598 { 2480 {
1599 /* this "locks" the handlers against writing to the pipe */ 2481 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1600 /* while we modify the fd vars */
1601 gotsig = 1;
1602#if EV_ASYNC_ENABLE
1603 gotasync = 1;
1604#endif
1605 2482
1606 ev_ref (EV_A); 2483 ev_ref (EV_A);
1607 ev_io_stop (EV_A_ &pipe_w); 2484 ev_io_stop (EV_A_ &pipe_w);
1608 2485
1609#if EV_USE_EVENTFD 2486#if EV_USE_EVENTFD
… …
1611 close (evfd); 2488 close (evfd);
1612#endif 2489#endif
1613 2490
1614 if (evpipe [0] >= 0) 2491 if (evpipe [0] >= 0)
1615 { 2492 {
1616 close (evpipe [0]); 2493 EV_WIN32_CLOSE_FD (evpipe [0]);
1617 close (evpipe [1]); 2494 EV_WIN32_CLOSE_FD (evpipe [1]);
1618 } 2495 }
1619 2496
2497#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1620 evpipe_init (EV_A); 2498 evpipe_init (EV_A);
1621 /* now iterate over everything, in case we missed something */ 2499 /* now iterate over everything, in case we missed something */
1622 pipecb (EV_A_ &pipe_w, EV_READ); 2500 pipecb (EV_A_ &pipe_w, EV_READ);
2501#endif
1623 } 2502 }
1624 2503
1625 postfork = 0; 2504 postfork = 0;
1626} 2505}
1627 2506
1628#if EV_MULTIPLICITY 2507#if EV_MULTIPLICITY
1629 2508
1630struct ev_loop * 2509struct ev_loop * ecb_cold
1631ev_loop_new (unsigned int flags) 2510ev_loop_new (unsigned int flags) EV_THROW
1632{ 2511{
1633 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2512 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1634 2513
1635 memset (loop, 0, sizeof (struct ev_loop)); 2514 memset (EV_A, 0, sizeof (struct ev_loop));
1636
1637 loop_init (EV_A_ flags); 2515 loop_init (EV_A_ flags);
1638 2516
1639 if (ev_backend (EV_A)) 2517 if (ev_backend (EV_A))
1640 return loop; 2518 return EV_A;
1641 2519
2520 ev_free (EV_A);
1642 return 0; 2521 return 0;
1643} 2522}
1644 2523
1645void
1646ev_loop_destroy (EV_P)
1647{
1648 loop_destroy (EV_A);
1649 ev_free (loop);
1650}
1651
1652void
1653ev_loop_fork (EV_P)
1654{
1655 postfork = 1; /* must be in line with ev_default_fork */
1656}
1657#endif /* multiplicity */ 2524#endif /* multiplicity */
1658 2525
1659#if EV_VERIFY 2526#if EV_VERIFY
1660static void noinline 2527static void noinline ecb_cold
1661verify_watcher (EV_P_ W w) 2528verify_watcher (EV_P_ W w)
1662{ 2529{
1663 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2530 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1664 2531
1665 if (w->pending) 2532 if (w->pending)
1666 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2533 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1667} 2534}
1668 2535
1669static void noinline 2536static void noinline ecb_cold
1670verify_heap (EV_P_ ANHE *heap, int N) 2537verify_heap (EV_P_ ANHE *heap, int N)
1671{ 2538{
1672 int i; 2539 int i;
1673 2540
1674 for (i = HEAP0; i < N + HEAP0; ++i) 2541 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1679 2546
1680 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2547 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1681 } 2548 }
1682} 2549}
1683 2550
1684static void noinline 2551static void noinline ecb_cold
1685array_verify (EV_P_ W *ws, int cnt) 2552array_verify (EV_P_ W *ws, int cnt)
1686{ 2553{
1687 while (cnt--) 2554 while (cnt--)
1688 { 2555 {
1689 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2556 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1690 verify_watcher (EV_A_ ws [cnt]); 2557 verify_watcher (EV_A_ ws [cnt]);
1691 } 2558 }
1692} 2559}
1693#endif 2560#endif
1694 2561
1695#if EV_MINIMAL < 2 2562#if EV_FEATURE_API
1696void 2563void ecb_cold
1697ev_loop_verify (EV_P) 2564ev_verify (EV_P) EV_THROW
1698{ 2565{
1699#if EV_VERIFY 2566#if EV_VERIFY
1700 int i; 2567 int i, j;
1701 WL w; 2568 WL w, w2;
1702 2569
1703 assert (activecnt >= -1); 2570 assert (activecnt >= -1);
1704 2571
1705 assert (fdchangemax >= fdchangecnt); 2572 assert (fdchangemax >= fdchangecnt);
1706 for (i = 0; i < fdchangecnt; ++i) 2573 for (i = 0; i < fdchangecnt; ++i)
1707 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2574 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1708 2575
1709 assert (anfdmax >= 0); 2576 assert (anfdmax >= 0);
1710 for (i = 0; i < anfdmax; ++i) 2577 for (i = j = 0; i < anfdmax; ++i)
1711 for (w = anfds [i].head; w; w = w->next) 2578 for (w = w2 = anfds [i].head; w; w = w->next)
1712 { 2579 {
1713 verify_watcher (EV_A_ (W)w); 2580 verify_watcher (EV_A_ (W)w);
2581
2582 if (++j & 1)
2583 w2 = w2->next;
2584
2585 assert (("libev: io watcher list contains a loop", w != w2));
1714 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2586 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1715 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2587 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1716 } 2588 }
1717 2589
1718 assert (timermax >= timercnt); 2590 assert (timermax >= timercnt);
… …
1736#if EV_FORK_ENABLE 2608#if EV_FORK_ENABLE
1737 assert (forkmax >= forkcnt); 2609 assert (forkmax >= forkcnt);
1738 array_verify (EV_A_ (W *)forks, forkcnt); 2610 array_verify (EV_A_ (W *)forks, forkcnt);
1739#endif 2611#endif
1740 2612
2613#if EV_CLEANUP_ENABLE
2614 assert (cleanupmax >= cleanupcnt);
2615 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2616#endif
2617
1741#if EV_ASYNC_ENABLE 2618#if EV_ASYNC_ENABLE
1742 assert (asyncmax >= asynccnt); 2619 assert (asyncmax >= asynccnt);
1743 array_verify (EV_A_ (W *)asyncs, asynccnt); 2620 array_verify (EV_A_ (W *)asyncs, asynccnt);
1744#endif 2621#endif
1745 2622
2623#if EV_PREPARE_ENABLE
1746 assert (preparemax >= preparecnt); 2624 assert (preparemax >= preparecnt);
1747 array_verify (EV_A_ (W *)prepares, preparecnt); 2625 array_verify (EV_A_ (W *)prepares, preparecnt);
2626#endif
1748 2627
2628#if EV_CHECK_ENABLE
1749 assert (checkmax >= checkcnt); 2629 assert (checkmax >= checkcnt);
1750 array_verify (EV_A_ (W *)checks, checkcnt); 2630 array_verify (EV_A_ (W *)checks, checkcnt);
2631#endif
1751 2632
1752# if 0 2633# if 0
2634#if EV_CHILD_ENABLE
1753 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2635 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1754 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2636 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2637#endif
1755# endif 2638# endif
1756#endif 2639#endif
1757} 2640}
1758#endif 2641#endif
1759 2642
1760#if EV_MULTIPLICITY 2643#if EV_MULTIPLICITY
1761struct ev_loop * 2644struct ev_loop * ecb_cold
1762ev_default_loop_init (unsigned int flags)
1763#else 2645#else
1764int 2646int
2647#endif
1765ev_default_loop (unsigned int flags) 2648ev_default_loop (unsigned int flags) EV_THROW
1766#endif
1767{ 2649{
1768 if (!ev_default_loop_ptr) 2650 if (!ev_default_loop_ptr)
1769 { 2651 {
1770#if EV_MULTIPLICITY 2652#if EV_MULTIPLICITY
1771 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2653 EV_P = ev_default_loop_ptr = &default_loop_struct;
1772#else 2654#else
1773 ev_default_loop_ptr = 1; 2655 ev_default_loop_ptr = 1;
1774#endif 2656#endif
1775 2657
1776 loop_init (EV_A_ flags); 2658 loop_init (EV_A_ flags);
1777 2659
1778 if (ev_backend (EV_A)) 2660 if (ev_backend (EV_A))
1779 { 2661 {
1780#ifndef _WIN32 2662#if EV_CHILD_ENABLE
1781 ev_signal_init (&childev, childcb, SIGCHLD); 2663 ev_signal_init (&childev, childcb, SIGCHLD);
1782 ev_set_priority (&childev, EV_MAXPRI); 2664 ev_set_priority (&childev, EV_MAXPRI);
1783 ev_signal_start (EV_A_ &childev); 2665 ev_signal_start (EV_A_ &childev);
1784 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2666 ev_unref (EV_A); /* child watcher should not keep loop alive */
1785#endif 2667#endif
… …
1790 2672
1791 return ev_default_loop_ptr; 2673 return ev_default_loop_ptr;
1792} 2674}
1793 2675
1794void 2676void
1795ev_default_destroy (void) 2677ev_loop_fork (EV_P) EV_THROW
1796{ 2678{
1797#if EV_MULTIPLICITY
1798 struct ev_loop *loop = ev_default_loop_ptr;
1799#endif
1800
1801 ev_default_loop_ptr = 0;
1802
1803#ifndef _WIN32
1804 ev_ref (EV_A); /* child watcher */
1805 ev_signal_stop (EV_A_ &childev);
1806#endif
1807
1808 loop_destroy (EV_A);
1809}
1810
1811void
1812ev_default_fork (void)
1813{
1814#if EV_MULTIPLICITY
1815 struct ev_loop *loop = ev_default_loop_ptr;
1816#endif
1817
1818 postfork = 1; /* must be in line with ev_loop_fork */ 2679 postfork = 1; /* must be in line with ev_default_fork */
1819} 2680}
1820 2681
1821/*****************************************************************************/ 2682/*****************************************************************************/
1822 2683
1823void 2684void
1824ev_invoke (EV_P_ void *w, int revents) 2685ev_invoke (EV_P_ void *w, int revents)
1825{ 2686{
1826 EV_CB_INVOKE ((W)w, revents); 2687 EV_CB_INVOKE ((W)w, revents);
1827} 2688}
1828 2689
2690unsigned int
2691ev_pending_count (EV_P) EV_THROW
2692{
2693 int pri;
2694 unsigned int count = 0;
2695
2696 for (pri = NUMPRI; pri--; )
2697 count += pendingcnt [pri];
2698
2699 return count;
2700}
2701
1829void noinline 2702void noinline
1830ev_invoke_pending (EV_P) 2703ev_invoke_pending (EV_P)
1831{ 2704{
1832 int pri; 2705 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
1833
1834 for (pri = NUMPRI; pri--; )
1835 while (pendingcnt [pri]) 2706 while (pendingcnt [pendingpri])
1836 { 2707 {
1837 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2708 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1838
1839 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1840 /* ^ this is no longer true, as pending_w could be here */
1841 2709
1842 p->w->pending = 0; 2710 p->w->pending = 0;
1843 EV_CB_INVOKE (p->w, p->events); 2711 EV_CB_INVOKE (p->w, p->events);
1844 EV_FREQUENT_CHECK; 2712 EV_FREQUENT_CHECK;
1845 } 2713 }
… …
1902 EV_FREQUENT_CHECK; 2770 EV_FREQUENT_CHECK;
1903 feed_reverse (EV_A_ (W)w); 2771 feed_reverse (EV_A_ (W)w);
1904 } 2772 }
1905 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2773 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1906 2774
1907 feed_reverse_done (EV_A_ EV_TIMEOUT); 2775 feed_reverse_done (EV_A_ EV_TIMER);
1908 } 2776 }
1909} 2777}
1910 2778
1911#if EV_PERIODIC_ENABLE 2779#if EV_PERIODIC_ENABLE
2780
2781static void noinline
2782periodic_recalc (EV_P_ ev_periodic *w)
2783{
2784 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2785 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2786
2787 /* the above almost always errs on the low side */
2788 while (at <= ev_rt_now)
2789 {
2790 ev_tstamp nat = at + w->interval;
2791
2792 /* when resolution fails us, we use ev_rt_now */
2793 if (expect_false (nat == at))
2794 {
2795 at = ev_rt_now;
2796 break;
2797 }
2798
2799 at = nat;
2800 }
2801
2802 ev_at (w) = at;
2803}
2804
1912/* make periodics pending */ 2805/* make periodics pending */
1913inline_size void 2806inline_size void
1914periodics_reify (EV_P) 2807periodics_reify (EV_P)
1915{ 2808{
1916 EV_FREQUENT_CHECK; 2809 EV_FREQUENT_CHECK;
… …
1935 ANHE_at_cache (periodics [HEAP0]); 2828 ANHE_at_cache (periodics [HEAP0]);
1936 downheap (periodics, periodiccnt, HEAP0); 2829 downheap (periodics, periodiccnt, HEAP0);
1937 } 2830 }
1938 else if (w->interval) 2831 else if (w->interval)
1939 { 2832 {
1940 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2833 periodic_recalc (EV_A_ w);
1941 /* if next trigger time is not sufficiently in the future, put it there */
1942 /* this might happen because of floating point inexactness */
1943 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1944 {
1945 ev_at (w) += w->interval;
1946
1947 /* if interval is unreasonably low we might still have a time in the past */
1948 /* so correct this. this will make the periodic very inexact, but the user */
1949 /* has effectively asked to get triggered more often than possible */
1950 if (ev_at (w) < ev_rt_now)
1951 ev_at (w) = ev_rt_now;
1952 }
1953
1954 ANHE_at_cache (periodics [HEAP0]); 2834 ANHE_at_cache (periodics [HEAP0]);
1955 downheap (periodics, periodiccnt, HEAP0); 2835 downheap (periodics, periodiccnt, HEAP0);
1956 } 2836 }
1957 else 2837 else
1958 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2838 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1965 feed_reverse_done (EV_A_ EV_PERIODIC); 2845 feed_reverse_done (EV_A_ EV_PERIODIC);
1966 } 2846 }
1967} 2847}
1968 2848
1969/* simply recalculate all periodics */ 2849/* simply recalculate all periodics */
1970/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2850/* TODO: maybe ensure that at least one event happens when jumping forward? */
1971static void noinline 2851static void noinline ecb_cold
1972periodics_reschedule (EV_P) 2852periodics_reschedule (EV_P)
1973{ 2853{
1974 int i; 2854 int i;
1975 2855
1976 /* adjust periodics after time jump */ 2856 /* adjust periodics after time jump */
… …
1979 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2859 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1980 2860
1981 if (w->reschedule_cb) 2861 if (w->reschedule_cb)
1982 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2862 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1983 else if (w->interval) 2863 else if (w->interval)
1984 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2864 periodic_recalc (EV_A_ w);
1985 2865
1986 ANHE_at_cache (periodics [i]); 2866 ANHE_at_cache (periodics [i]);
1987 } 2867 }
1988 2868
1989 reheap (periodics, periodiccnt); 2869 reheap (periodics, periodiccnt);
1990} 2870}
1991#endif 2871#endif
1992 2872
1993/* adjust all timers by a given offset */ 2873/* adjust all timers by a given offset */
1994static void noinline 2874static void noinline ecb_cold
1995timers_reschedule (EV_P_ ev_tstamp adjust) 2875timers_reschedule (EV_P_ ev_tstamp adjust)
1996{ 2876{
1997 int i; 2877 int i;
1998 2878
1999 for (i = 0; i < timercnt; ++i) 2879 for (i = 0; i < timercnt; ++i)
… …
2003 ANHE_at_cache (*he); 2883 ANHE_at_cache (*he);
2004 } 2884 }
2005} 2885}
2006 2886
2007/* fetch new monotonic and realtime times from the kernel */ 2887/* fetch new monotonic and realtime times from the kernel */
2008/* also detetc if there was a timejump, and act accordingly */ 2888/* also detect if there was a timejump, and act accordingly */
2009inline_speed void 2889inline_speed void
2010time_update (EV_P_ ev_tstamp max_block) 2890time_update (EV_P_ ev_tstamp max_block)
2011{ 2891{
2012#if EV_USE_MONOTONIC 2892#if EV_USE_MONOTONIC
2013 if (expect_true (have_monotonic)) 2893 if (expect_true (have_monotonic))
… …
2036 * doesn't hurt either as we only do this on time-jumps or 2916 * doesn't hurt either as we only do this on time-jumps or
2037 * in the unlikely event of having been preempted here. 2917 * in the unlikely event of having been preempted here.
2038 */ 2918 */
2039 for (i = 4; --i; ) 2919 for (i = 4; --i; )
2040 { 2920 {
2921 ev_tstamp diff;
2041 rtmn_diff = ev_rt_now - mn_now; 2922 rtmn_diff = ev_rt_now - mn_now;
2042 2923
2924 diff = odiff - rtmn_diff;
2925
2043 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2926 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2044 return; /* all is well */ 2927 return; /* all is well */
2045 2928
2046 ev_rt_now = ev_time (); 2929 ev_rt_now = ev_time ();
2047 mn_now = get_clock (); 2930 mn_now = get_clock ();
2048 now_floor = mn_now; 2931 now_floor = mn_now;
… …
2070 2953
2071 mn_now = ev_rt_now; 2954 mn_now = ev_rt_now;
2072 } 2955 }
2073} 2956}
2074 2957
2075void 2958int
2076ev_loop (EV_P_ int flags) 2959ev_run (EV_P_ int flags)
2077{ 2960{
2078#if EV_MINIMAL < 2 2961#if EV_FEATURE_API
2079 ++loop_depth; 2962 ++loop_depth;
2080#endif 2963#endif
2081 2964
2965 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2966
2082 loop_done = EVUNLOOP_CANCEL; 2967 loop_done = EVBREAK_CANCEL;
2083 2968
2084 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2969 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2085 2970
2086 do 2971 do
2087 { 2972 {
2088#if EV_VERIFY >= 2 2973#if EV_VERIFY >= 2
2089 ev_loop_verify (EV_A); 2974 ev_verify (EV_A);
2090#endif 2975#endif
2091 2976
2092#ifndef _WIN32 2977#ifndef _WIN32
2093 if (expect_false (curpid)) /* penalise the forking check even more */ 2978 if (expect_false (curpid)) /* penalise the forking check even more */
2094 if (expect_false (getpid () != curpid)) 2979 if (expect_false (getpid () != curpid))
… …
2106 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2991 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2107 EV_INVOKE_PENDING; 2992 EV_INVOKE_PENDING;
2108 } 2993 }
2109#endif 2994#endif
2110 2995
2996#if EV_PREPARE_ENABLE
2111 /* queue prepare watchers (and execute them) */ 2997 /* queue prepare watchers (and execute them) */
2112 if (expect_false (preparecnt)) 2998 if (expect_false (preparecnt))
2113 { 2999 {
2114 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3000 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2115 EV_INVOKE_PENDING; 3001 EV_INVOKE_PENDING;
2116 } 3002 }
3003#endif
3004
3005 if (expect_false (loop_done))
3006 break;
2117 3007
2118 /* we might have forked, so reify kernel state if necessary */ 3008 /* we might have forked, so reify kernel state if necessary */
2119 if (expect_false (postfork)) 3009 if (expect_false (postfork))
2120 loop_fork (EV_A); 3010 loop_fork (EV_A);
2121 3011
… …
2125 /* calculate blocking time */ 3015 /* calculate blocking time */
2126 { 3016 {
2127 ev_tstamp waittime = 0.; 3017 ev_tstamp waittime = 0.;
2128 ev_tstamp sleeptime = 0.; 3018 ev_tstamp sleeptime = 0.;
2129 3019
3020 /* remember old timestamp for io_blocktime calculation */
3021 ev_tstamp prev_mn_now = mn_now;
3022
3023 /* update time to cancel out callback processing overhead */
3024 time_update (EV_A_ 1e100);
3025
3026 /* from now on, we want a pipe-wake-up */
3027 pipe_write_wanted = 1;
3028
3029 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3030
2130 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3031 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2131 { 3032 {
2132 /* remember old timestamp for io_blocktime calculation */
2133 ev_tstamp prev_mn_now = mn_now;
2134
2135 /* update time to cancel out callback processing overhead */
2136 time_update (EV_A_ 1e100);
2137
2138 waittime = MAX_BLOCKTIME; 3033 waittime = MAX_BLOCKTIME;
2139 3034
2140 if (timercnt) 3035 if (timercnt)
2141 { 3036 {
2142 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3037 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2143 if (waittime > to) waittime = to; 3038 if (waittime > to) waittime = to;
2144 } 3039 }
2145 3040
2146#if EV_PERIODIC_ENABLE 3041#if EV_PERIODIC_ENABLE
2147 if (periodiccnt) 3042 if (periodiccnt)
2148 { 3043 {
2149 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3044 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2150 if (waittime > to) waittime = to; 3045 if (waittime > to) waittime = to;
2151 } 3046 }
2152#endif 3047#endif
2153 3048
2154 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3049 /* don't let timeouts decrease the waittime below timeout_blocktime */
2155 if (expect_false (waittime < timeout_blocktime)) 3050 if (expect_false (waittime < timeout_blocktime))
2156 waittime = timeout_blocktime; 3051 waittime = timeout_blocktime;
3052
3053 /* at this point, we NEED to wait, so we have to ensure */
3054 /* to pass a minimum nonzero value to the backend */
3055 if (expect_false (waittime < backend_mintime))
3056 waittime = backend_mintime;
2157 3057
2158 /* extra check because io_blocktime is commonly 0 */ 3058 /* extra check because io_blocktime is commonly 0 */
2159 if (expect_false (io_blocktime)) 3059 if (expect_false (io_blocktime))
2160 { 3060 {
2161 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3061 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2162 3062
2163 if (sleeptime > waittime - backend_fudge) 3063 if (sleeptime > waittime - backend_mintime)
2164 sleeptime = waittime - backend_fudge; 3064 sleeptime = waittime - backend_mintime;
2165 3065
2166 if (expect_true (sleeptime > 0.)) 3066 if (expect_true (sleeptime > 0.))
2167 { 3067 {
2168 ev_sleep (sleeptime); 3068 ev_sleep (sleeptime);
2169 waittime -= sleeptime; 3069 waittime -= sleeptime;
2170 } 3070 }
2171 } 3071 }
2172 } 3072 }
2173 3073
2174#if EV_MINIMAL < 2 3074#if EV_FEATURE_API
2175 ++loop_count; 3075 ++loop_count;
2176#endif 3076#endif
3077 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2177 backend_poll (EV_A_ waittime); 3078 backend_poll (EV_A_ waittime);
3079 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3080
3081 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3082
3083 if (pipe_write_skipped)
3084 {
3085 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3086 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3087 }
3088
2178 3089
2179 /* update ev_rt_now, do magic */ 3090 /* update ev_rt_now, do magic */
2180 time_update (EV_A_ waittime + sleeptime); 3091 time_update (EV_A_ waittime + sleeptime);
2181 } 3092 }
2182 3093
… …
2189#if EV_IDLE_ENABLE 3100#if EV_IDLE_ENABLE
2190 /* queue idle watchers unless other events are pending */ 3101 /* queue idle watchers unless other events are pending */
2191 idle_reify (EV_A); 3102 idle_reify (EV_A);
2192#endif 3103#endif
2193 3104
3105#if EV_CHECK_ENABLE
2194 /* queue check watchers, to be executed first */ 3106 /* queue check watchers, to be executed first */
2195 if (expect_false (checkcnt)) 3107 if (expect_false (checkcnt))
2196 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3108 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3109#endif
2197 3110
2198 EV_INVOKE_PENDING; 3111 EV_INVOKE_PENDING;
2199 } 3112 }
2200 while (expect_true ( 3113 while (expect_true (
2201 activecnt 3114 activecnt
2202 && !loop_done 3115 && !loop_done
2203 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3116 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2204 )); 3117 ));
2205 3118
2206 if (loop_done == EVUNLOOP_ONE) 3119 if (loop_done == EVBREAK_ONE)
2207 loop_done = EVUNLOOP_CANCEL; 3120 loop_done = EVBREAK_CANCEL;
2208 3121
2209#if EV_MINIMAL < 2 3122#if EV_FEATURE_API
2210 --loop_depth; 3123 --loop_depth;
2211#endif 3124#endif
3125
3126 return activecnt;
2212} 3127}
2213 3128
2214void 3129void
2215ev_unloop (EV_P_ int how) 3130ev_break (EV_P_ int how) EV_THROW
2216{ 3131{
2217 loop_done = how; 3132 loop_done = how;
2218} 3133}
2219 3134
2220void 3135void
2221ev_ref (EV_P) 3136ev_ref (EV_P) EV_THROW
2222{ 3137{
2223 ++activecnt; 3138 ++activecnt;
2224} 3139}
2225 3140
2226void 3141void
2227ev_unref (EV_P) 3142ev_unref (EV_P) EV_THROW
2228{ 3143{
2229 --activecnt; 3144 --activecnt;
2230} 3145}
2231 3146
2232void 3147void
2233ev_now_update (EV_P) 3148ev_now_update (EV_P) EV_THROW
2234{ 3149{
2235 time_update (EV_A_ 1e100); 3150 time_update (EV_A_ 1e100);
2236} 3151}
2237 3152
2238void 3153void
2239ev_suspend (EV_P) 3154ev_suspend (EV_P) EV_THROW
2240{ 3155{
2241 ev_now_update (EV_A); 3156 ev_now_update (EV_A);
2242} 3157}
2243 3158
2244void 3159void
2245ev_resume (EV_P) 3160ev_resume (EV_P) EV_THROW
2246{ 3161{
2247 ev_tstamp mn_prev = mn_now; 3162 ev_tstamp mn_prev = mn_now;
2248 3163
2249 ev_now_update (EV_A); 3164 ev_now_update (EV_A);
2250 timers_reschedule (EV_A_ mn_now - mn_prev); 3165 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2267inline_size void 3182inline_size void
2268wlist_del (WL *head, WL elem) 3183wlist_del (WL *head, WL elem)
2269{ 3184{
2270 while (*head) 3185 while (*head)
2271 { 3186 {
2272 if (*head == elem) 3187 if (expect_true (*head == elem))
2273 { 3188 {
2274 *head = elem->next; 3189 *head = elem->next;
2275 return; 3190 break;
2276 } 3191 }
2277 3192
2278 head = &(*head)->next; 3193 head = &(*head)->next;
2279 } 3194 }
2280} 3195}
… …
2289 w->pending = 0; 3204 w->pending = 0;
2290 } 3205 }
2291} 3206}
2292 3207
2293int 3208int
2294ev_clear_pending (EV_P_ void *w) 3209ev_clear_pending (EV_P_ void *w) EV_THROW
2295{ 3210{
2296 W w_ = (W)w; 3211 W w_ = (W)w;
2297 int pending = w_->pending; 3212 int pending = w_->pending;
2298 3213
2299 if (expect_true (pending)) 3214 if (expect_true (pending))
… …
2332} 3247}
2333 3248
2334/*****************************************************************************/ 3249/*****************************************************************************/
2335 3250
2336void noinline 3251void noinline
2337ev_io_start (EV_P_ ev_io *w) 3252ev_io_start (EV_P_ ev_io *w) EV_THROW
2338{ 3253{
2339 int fd = w->fd; 3254 int fd = w->fd;
2340 3255
2341 if (expect_false (ev_is_active (w))) 3256 if (expect_false (ev_is_active (w)))
2342 return; 3257 return;
2343 3258
2344 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3259 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2345 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3260 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2346 3261
2347 EV_FREQUENT_CHECK; 3262 EV_FREQUENT_CHECK;
2348 3263
2349 ev_start (EV_A_ (W)w, 1); 3264 ev_start (EV_A_ (W)w, 1);
2350 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3265 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2351 wlist_add (&anfds[fd].head, (WL)w); 3266 wlist_add (&anfds[fd].head, (WL)w);
2352 3267
3268 /* common bug, apparently */
3269 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3270
2353 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3271 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2354 w->events &= ~EV__IOFDSET; 3272 w->events &= ~EV__IOFDSET;
2355 3273
2356 EV_FREQUENT_CHECK; 3274 EV_FREQUENT_CHECK;
2357} 3275}
2358 3276
2359void noinline 3277void noinline
2360ev_io_stop (EV_P_ ev_io *w) 3278ev_io_stop (EV_P_ ev_io *w) EV_THROW
2361{ 3279{
2362 clear_pending (EV_A_ (W)w); 3280 clear_pending (EV_A_ (W)w);
2363 if (expect_false (!ev_is_active (w))) 3281 if (expect_false (!ev_is_active (w)))
2364 return; 3282 return;
2365 3283
… …
2368 EV_FREQUENT_CHECK; 3286 EV_FREQUENT_CHECK;
2369 3287
2370 wlist_del (&anfds[w->fd].head, (WL)w); 3288 wlist_del (&anfds[w->fd].head, (WL)w);
2371 ev_stop (EV_A_ (W)w); 3289 ev_stop (EV_A_ (W)w);
2372 3290
2373 fd_change (EV_A_ w->fd, 1); 3291 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2374 3292
2375 EV_FREQUENT_CHECK; 3293 EV_FREQUENT_CHECK;
2376} 3294}
2377 3295
2378void noinline 3296void noinline
2379ev_timer_start (EV_P_ ev_timer *w) 3297ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2380{ 3298{
2381 if (expect_false (ev_is_active (w))) 3299 if (expect_false (ev_is_active (w)))
2382 return; 3300 return;
2383 3301
2384 ev_at (w) += mn_now; 3302 ev_at (w) += mn_now;
… …
2398 3316
2399 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3317 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2400} 3318}
2401 3319
2402void noinline 3320void noinline
2403ev_timer_stop (EV_P_ ev_timer *w) 3321ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2404{ 3322{
2405 clear_pending (EV_A_ (W)w); 3323 clear_pending (EV_A_ (W)w);
2406 if (expect_false (!ev_is_active (w))) 3324 if (expect_false (!ev_is_active (w)))
2407 return; 3325 return;
2408 3326
… …
2420 timers [active] = timers [timercnt + HEAP0]; 3338 timers [active] = timers [timercnt + HEAP0];
2421 adjustheap (timers, timercnt, active); 3339 adjustheap (timers, timercnt, active);
2422 } 3340 }
2423 } 3341 }
2424 3342
2425 EV_FREQUENT_CHECK;
2426
2427 ev_at (w) -= mn_now; 3343 ev_at (w) -= mn_now;
2428 3344
2429 ev_stop (EV_A_ (W)w); 3345 ev_stop (EV_A_ (W)w);
3346
3347 EV_FREQUENT_CHECK;
2430} 3348}
2431 3349
2432void noinline 3350void noinline
2433ev_timer_again (EV_P_ ev_timer *w) 3351ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2434{ 3352{
2435 EV_FREQUENT_CHECK; 3353 EV_FREQUENT_CHECK;
3354
3355 clear_pending (EV_A_ (W)w);
2436 3356
2437 if (ev_is_active (w)) 3357 if (ev_is_active (w))
2438 { 3358 {
2439 if (w->repeat) 3359 if (w->repeat)
2440 { 3360 {
… …
2452 } 3372 }
2453 3373
2454 EV_FREQUENT_CHECK; 3374 EV_FREQUENT_CHECK;
2455} 3375}
2456 3376
3377ev_tstamp
3378ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3379{
3380 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3381}
3382
2457#if EV_PERIODIC_ENABLE 3383#if EV_PERIODIC_ENABLE
2458void noinline 3384void noinline
2459ev_periodic_start (EV_P_ ev_periodic *w) 3385ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2460{ 3386{
2461 if (expect_false (ev_is_active (w))) 3387 if (expect_false (ev_is_active (w)))
2462 return; 3388 return;
2463 3389
2464 if (w->reschedule_cb) 3390 if (w->reschedule_cb)
2465 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3391 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2466 else if (w->interval) 3392 else if (w->interval)
2467 { 3393 {
2468 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3394 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2469 /* this formula differs from the one in periodic_reify because we do not always round up */ 3395 periodic_recalc (EV_A_ w);
2470 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2471 } 3396 }
2472 else 3397 else
2473 ev_at (w) = w->offset; 3398 ev_at (w) = w->offset;
2474 3399
2475 EV_FREQUENT_CHECK; 3400 EV_FREQUENT_CHECK;
… …
2485 3410
2486 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3411 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2487} 3412}
2488 3413
2489void noinline 3414void noinline
2490ev_periodic_stop (EV_P_ ev_periodic *w) 3415ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2491{ 3416{
2492 clear_pending (EV_A_ (W)w); 3417 clear_pending (EV_A_ (W)w);
2493 if (expect_false (!ev_is_active (w))) 3418 if (expect_false (!ev_is_active (w)))
2494 return; 3419 return;
2495 3420
… …
2507 periodics [active] = periodics [periodiccnt + HEAP0]; 3432 periodics [active] = periodics [periodiccnt + HEAP0];
2508 adjustheap (periodics, periodiccnt, active); 3433 adjustheap (periodics, periodiccnt, active);
2509 } 3434 }
2510 } 3435 }
2511 3436
2512 EV_FREQUENT_CHECK;
2513
2514 ev_stop (EV_A_ (W)w); 3437 ev_stop (EV_A_ (W)w);
3438
3439 EV_FREQUENT_CHECK;
2515} 3440}
2516 3441
2517void noinline 3442void noinline
2518ev_periodic_again (EV_P_ ev_periodic *w) 3443ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2519{ 3444{
2520 /* TODO: use adjustheap and recalculation */ 3445 /* TODO: use adjustheap and recalculation */
2521 ev_periodic_stop (EV_A_ w); 3446 ev_periodic_stop (EV_A_ w);
2522 ev_periodic_start (EV_A_ w); 3447 ev_periodic_start (EV_A_ w);
2523} 3448}
… …
2525 3450
2526#ifndef SA_RESTART 3451#ifndef SA_RESTART
2527# define SA_RESTART 0 3452# define SA_RESTART 0
2528#endif 3453#endif
2529 3454
3455#if EV_SIGNAL_ENABLE
3456
2530void noinline 3457void noinline
2531ev_signal_start (EV_P_ ev_signal *w) 3458ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2532{ 3459{
2533#if EV_MULTIPLICITY
2534 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2535#endif
2536 if (expect_false (ev_is_active (w))) 3460 if (expect_false (ev_is_active (w)))
2537 return; 3461 return;
2538 3462
2539 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3463 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2540 3464
2541 evpipe_init (EV_A); 3465#if EV_MULTIPLICITY
3466 assert (("libev: a signal must not be attached to two different loops",
3467 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2542 3468
2543 EV_FREQUENT_CHECK; 3469 signals [w->signum - 1].loop = EV_A;
3470#endif
2544 3471
3472 EV_FREQUENT_CHECK;
3473
3474#if EV_USE_SIGNALFD
3475 if (sigfd == -2)
2545 { 3476 {
2546#ifndef _WIN32 3477 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2547 sigset_t full, prev; 3478 if (sigfd < 0 && errno == EINVAL)
2548 sigfillset (&full); 3479 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2549 sigprocmask (SIG_SETMASK, &full, &prev);
2550#endif
2551 3480
2552 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3481 if (sigfd >= 0)
3482 {
3483 fd_intern (sigfd); /* doing it twice will not hurt */
2553 3484
2554#ifndef _WIN32 3485 sigemptyset (&sigfd_set);
2555 sigprocmask (SIG_SETMASK, &prev, 0); 3486
2556#endif 3487 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3488 ev_set_priority (&sigfd_w, EV_MAXPRI);
3489 ev_io_start (EV_A_ &sigfd_w);
3490 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3491 }
2557 } 3492 }
3493
3494 if (sigfd >= 0)
3495 {
3496 /* TODO: check .head */
3497 sigaddset (&sigfd_set, w->signum);
3498 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3499
3500 signalfd (sigfd, &sigfd_set, 0);
3501 }
3502#endif
2558 3503
2559 ev_start (EV_A_ (W)w, 1); 3504 ev_start (EV_A_ (W)w, 1);
2560 wlist_add (&signals [w->signum - 1].head, (WL)w); 3505 wlist_add (&signals [w->signum - 1].head, (WL)w);
2561 3506
2562 if (!((WL)w)->next) 3507 if (!((WL)w)->next)
3508# if EV_USE_SIGNALFD
3509 if (sigfd < 0) /*TODO*/
3510# endif
2563 { 3511 {
2564#if _WIN32 3512# ifdef _WIN32
3513 evpipe_init (EV_A);
3514
2565 signal (w->signum, ev_sighandler); 3515 signal (w->signum, ev_sighandler);
2566#else 3516# else
2567 struct sigaction sa; 3517 struct sigaction sa;
3518
3519 evpipe_init (EV_A);
3520
2568 sa.sa_handler = ev_sighandler; 3521 sa.sa_handler = ev_sighandler;
2569 sigfillset (&sa.sa_mask); 3522 sigfillset (&sa.sa_mask);
2570 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3523 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2571 sigaction (w->signum, &sa, 0); 3524 sigaction (w->signum, &sa, 0);
3525
3526 if (origflags & EVFLAG_NOSIGMASK)
3527 {
3528 sigemptyset (&sa.sa_mask);
3529 sigaddset (&sa.sa_mask, w->signum);
3530 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3531 }
2572#endif 3532#endif
2573 } 3533 }
2574 3534
2575 EV_FREQUENT_CHECK; 3535 EV_FREQUENT_CHECK;
2576} 3536}
2577 3537
2578void noinline 3538void noinline
2579ev_signal_stop (EV_P_ ev_signal *w) 3539ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2580{ 3540{
2581 clear_pending (EV_A_ (W)w); 3541 clear_pending (EV_A_ (W)w);
2582 if (expect_false (!ev_is_active (w))) 3542 if (expect_false (!ev_is_active (w)))
2583 return; 3543 return;
2584 3544
… …
2586 3546
2587 wlist_del (&signals [w->signum - 1].head, (WL)w); 3547 wlist_del (&signals [w->signum - 1].head, (WL)w);
2588 ev_stop (EV_A_ (W)w); 3548 ev_stop (EV_A_ (W)w);
2589 3549
2590 if (!signals [w->signum - 1].head) 3550 if (!signals [w->signum - 1].head)
3551 {
3552#if EV_MULTIPLICITY
3553 signals [w->signum - 1].loop = 0; /* unattach from signal */
3554#endif
3555#if EV_USE_SIGNALFD
3556 if (sigfd >= 0)
3557 {
3558 sigset_t ss;
3559
3560 sigemptyset (&ss);
3561 sigaddset (&ss, w->signum);
3562 sigdelset (&sigfd_set, w->signum);
3563
3564 signalfd (sigfd, &sigfd_set, 0);
3565 sigprocmask (SIG_UNBLOCK, &ss, 0);
3566 }
3567 else
3568#endif
2591 signal (w->signum, SIG_DFL); 3569 signal (w->signum, SIG_DFL);
3570 }
2592 3571
2593 EV_FREQUENT_CHECK; 3572 EV_FREQUENT_CHECK;
2594} 3573}
3574
3575#endif
3576
3577#if EV_CHILD_ENABLE
2595 3578
2596void 3579void
2597ev_child_start (EV_P_ ev_child *w) 3580ev_child_start (EV_P_ ev_child *w) EV_THROW
2598{ 3581{
2599#if EV_MULTIPLICITY 3582#if EV_MULTIPLICITY
2600 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3583 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2601#endif 3584#endif
2602 if (expect_false (ev_is_active (w))) 3585 if (expect_false (ev_is_active (w)))
2603 return; 3586 return;
2604 3587
2605 EV_FREQUENT_CHECK; 3588 EV_FREQUENT_CHECK;
2606 3589
2607 ev_start (EV_A_ (W)w, 1); 3590 ev_start (EV_A_ (W)w, 1);
2608 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3591 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2609 3592
2610 EV_FREQUENT_CHECK; 3593 EV_FREQUENT_CHECK;
2611} 3594}
2612 3595
2613void 3596void
2614ev_child_stop (EV_P_ ev_child *w) 3597ev_child_stop (EV_P_ ev_child *w) EV_THROW
2615{ 3598{
2616 clear_pending (EV_A_ (W)w); 3599 clear_pending (EV_A_ (W)w);
2617 if (expect_false (!ev_is_active (w))) 3600 if (expect_false (!ev_is_active (w)))
2618 return; 3601 return;
2619 3602
2620 EV_FREQUENT_CHECK; 3603 EV_FREQUENT_CHECK;
2621 3604
2622 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3605 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2623 ev_stop (EV_A_ (W)w); 3606 ev_stop (EV_A_ (W)w);
2624 3607
2625 EV_FREQUENT_CHECK; 3608 EV_FREQUENT_CHECK;
2626} 3609}
3610
3611#endif
2627 3612
2628#if EV_STAT_ENABLE 3613#if EV_STAT_ENABLE
2629 3614
2630# ifdef _WIN32 3615# ifdef _WIN32
2631# undef lstat 3616# undef lstat
… …
2637#define MIN_STAT_INTERVAL 0.1074891 3622#define MIN_STAT_INTERVAL 0.1074891
2638 3623
2639static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3624static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2640 3625
2641#if EV_USE_INOTIFY 3626#if EV_USE_INOTIFY
2642# define EV_INOTIFY_BUFSIZE 8192 3627
3628/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3629# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2643 3630
2644static void noinline 3631static void noinline
2645infy_add (EV_P_ ev_stat *w) 3632infy_add (EV_P_ ev_stat *w)
2646{ 3633{
2647 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); 3634 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);
2648 3635
2649 if (w->wd < 0) 3636 if (w->wd >= 0)
3637 {
3638 struct statfs sfs;
3639
3640 /* now local changes will be tracked by inotify, but remote changes won't */
3641 /* unless the filesystem is known to be local, we therefore still poll */
3642 /* also do poll on <2.6.25, but with normal frequency */
3643
3644 if (!fs_2625)
3645 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3646 else if (!statfs (w->path, &sfs)
3647 && (sfs.f_type == 0x1373 /* devfs */
3648 || sfs.f_type == 0xEF53 /* ext2/3 */
3649 || sfs.f_type == 0x3153464a /* jfs */
3650 || sfs.f_type == 0x52654973 /* reiser3 */
3651 || sfs.f_type == 0x01021994 /* tempfs */
3652 || sfs.f_type == 0x58465342 /* xfs */))
3653 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3654 else
3655 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2650 { 3656 }
3657 else
3658 {
3659 /* can't use inotify, continue to stat */
2651 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3660 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2652 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2653 3661
2654 /* monitor some parent directory for speedup hints */ 3662 /* if path is not there, monitor some parent directory for speedup hints */
2655 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3663 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2656 /* but an efficiency issue only */ 3664 /* but an efficiency issue only */
2657 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3665 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2658 { 3666 {
2659 char path [4096]; 3667 char path [4096];
… …
2669 if (!pend || pend == path) 3677 if (!pend || pend == path)
2670 break; 3678 break;
2671 3679
2672 *pend = 0; 3680 *pend = 0;
2673 w->wd = inotify_add_watch (fs_fd, path, mask); 3681 w->wd = inotify_add_watch (fs_fd, path, mask);
2674 } 3682 }
2675 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3683 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2676 } 3684 }
2677 } 3685 }
2678 3686
2679 if (w->wd >= 0) 3687 if (w->wd >= 0)
2680 {
2681 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3688 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2682 3689
2683 /* now local changes will be tracked by inotify, but remote changes won't */ 3690 /* now re-arm timer, if required */
2684 /* unless the filesystem it known to be local, we therefore still poll */ 3691 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2685 /* also do poll on <2.6.25, but with normal frequency */
2686 struct statfs sfs;
2687
2688 if (fs_2625 && !statfs (w->path, &sfs))
2689 if (sfs.f_type == 0x1373 /* devfs */
2690 || sfs.f_type == 0xEF53 /* ext2/3 */
2691 || sfs.f_type == 0x3153464a /* jfs */
2692 || sfs.f_type == 0x52654973 /* reiser3 */
2693 || sfs.f_type == 0x01021994 /* tempfs */
2694 || sfs.f_type == 0x58465342 /* xfs */)
2695 return;
2696
2697 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2698 ev_timer_again (EV_A_ &w->timer); 3692 ev_timer_again (EV_A_ &w->timer);
2699 } 3693 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2700} 3694}
2701 3695
2702static void noinline 3696static void noinline
2703infy_del (EV_P_ ev_stat *w) 3697infy_del (EV_P_ ev_stat *w)
2704{ 3698{
… …
2707 3701
2708 if (wd < 0) 3702 if (wd < 0)
2709 return; 3703 return;
2710 3704
2711 w->wd = -2; 3705 w->wd = -2;
2712 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3706 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2713 wlist_del (&fs_hash [slot].head, (WL)w); 3707 wlist_del (&fs_hash [slot].head, (WL)w);
2714 3708
2715 /* remove this watcher, if others are watching it, they will rearm */ 3709 /* remove this watcher, if others are watching it, they will rearm */
2716 inotify_rm_watch (fs_fd, wd); 3710 inotify_rm_watch (fs_fd, wd);
2717} 3711}
… …
2719static void noinline 3713static void noinline
2720infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3714infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2721{ 3715{
2722 if (slot < 0) 3716 if (slot < 0)
2723 /* overflow, need to check for all hash slots */ 3717 /* overflow, need to check for all hash slots */
2724 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3718 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2725 infy_wd (EV_A_ slot, wd, ev); 3719 infy_wd (EV_A_ slot, wd, ev);
2726 else 3720 else
2727 { 3721 {
2728 WL w_; 3722 WL w_;
2729 3723
2730 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3724 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2731 { 3725 {
2732 ev_stat *w = (ev_stat *)w_; 3726 ev_stat *w = (ev_stat *)w_;
2733 w_ = w_->next; /* lets us remove this watcher and all before it */ 3727 w_ = w_->next; /* lets us remove this watcher and all before it */
2734 3728
2735 if (w->wd == wd || wd == -1) 3729 if (w->wd == wd || wd == -1)
2736 { 3730 {
2737 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3731 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2738 { 3732 {
2739 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3733 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2740 w->wd = -1; 3734 w->wd = -1;
2741 infy_add (EV_A_ w); /* re-add, no matter what */ 3735 infy_add (EV_A_ w); /* re-add, no matter what */
2742 } 3736 }
2743 3737
2744 stat_timer_cb (EV_A_ &w->timer, 0); 3738 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2749 3743
2750static void 3744static void
2751infy_cb (EV_P_ ev_io *w, int revents) 3745infy_cb (EV_P_ ev_io *w, int revents)
2752{ 3746{
2753 char buf [EV_INOTIFY_BUFSIZE]; 3747 char buf [EV_INOTIFY_BUFSIZE];
2754 struct inotify_event *ev = (struct inotify_event *)buf;
2755 int ofs; 3748 int ofs;
2756 int len = read (fs_fd, buf, sizeof (buf)); 3749 int len = read (fs_fd, buf, sizeof (buf));
2757 3750
2758 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3751 for (ofs = 0; ofs < len; )
3752 {
3753 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2759 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3754 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3755 ofs += sizeof (struct inotify_event) + ev->len;
3756 }
2760} 3757}
2761 3758
2762inline_size void 3759inline_size void ecb_cold
2763check_2625 (EV_P) 3760ev_check_2625 (EV_P)
2764{ 3761{
2765 /* kernels < 2.6.25 are borked 3762 /* kernels < 2.6.25 are borked
2766 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3763 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2767 */ 3764 */
2768 struct utsname buf; 3765 if (ev_linux_version () < 0x020619)
2769 int major, minor, micro;
2770
2771 if (uname (&buf))
2772 return; 3766 return;
2773 3767
2774 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2775 return;
2776
2777 if (major < 2
2778 || (major == 2 && minor < 6)
2779 || (major == 2 && minor == 6 && micro < 25))
2780 return;
2781
2782 fs_2625 = 1; 3768 fs_2625 = 1;
3769}
3770
3771inline_size int
3772infy_newfd (void)
3773{
3774#if defined IN_CLOEXEC && defined IN_NONBLOCK
3775 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3776 if (fd >= 0)
3777 return fd;
3778#endif
3779 return inotify_init ();
2783} 3780}
2784 3781
2785inline_size void 3782inline_size void
2786infy_init (EV_P) 3783infy_init (EV_P)
2787{ 3784{
2788 if (fs_fd != -2) 3785 if (fs_fd != -2)
2789 return; 3786 return;
2790 3787
2791 fs_fd = -1; 3788 fs_fd = -1;
2792 3789
2793 check_2625 (EV_A); 3790 ev_check_2625 (EV_A);
2794 3791
2795 fs_fd = inotify_init (); 3792 fs_fd = infy_newfd ();
2796 3793
2797 if (fs_fd >= 0) 3794 if (fs_fd >= 0)
2798 { 3795 {
3796 fd_intern (fs_fd);
2799 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3797 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2800 ev_set_priority (&fs_w, EV_MAXPRI); 3798 ev_set_priority (&fs_w, EV_MAXPRI);
2801 ev_io_start (EV_A_ &fs_w); 3799 ev_io_start (EV_A_ &fs_w);
3800 ev_unref (EV_A);
2802 } 3801 }
2803} 3802}
2804 3803
2805inline_size void 3804inline_size void
2806infy_fork (EV_P) 3805infy_fork (EV_P)
… …
2808 int slot; 3807 int slot;
2809 3808
2810 if (fs_fd < 0) 3809 if (fs_fd < 0)
2811 return; 3810 return;
2812 3811
3812 ev_ref (EV_A);
3813 ev_io_stop (EV_A_ &fs_w);
2813 close (fs_fd); 3814 close (fs_fd);
2814 fs_fd = inotify_init (); 3815 fs_fd = infy_newfd ();
2815 3816
3817 if (fs_fd >= 0)
3818 {
3819 fd_intern (fs_fd);
3820 ev_io_set (&fs_w, fs_fd, EV_READ);
3821 ev_io_start (EV_A_ &fs_w);
3822 ev_unref (EV_A);
3823 }
3824
2816 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3825 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2817 { 3826 {
2818 WL w_ = fs_hash [slot].head; 3827 WL w_ = fs_hash [slot].head;
2819 fs_hash [slot].head = 0; 3828 fs_hash [slot].head = 0;
2820 3829
2821 while (w_) 3830 while (w_)
… …
2826 w->wd = -1; 3835 w->wd = -1;
2827 3836
2828 if (fs_fd >= 0) 3837 if (fs_fd >= 0)
2829 infy_add (EV_A_ w); /* re-add, no matter what */ 3838 infy_add (EV_A_ w); /* re-add, no matter what */
2830 else 3839 else
3840 {
3841 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3842 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2831 ev_timer_again (EV_A_ &w->timer); 3843 ev_timer_again (EV_A_ &w->timer);
3844 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3845 }
2832 } 3846 }
2833 } 3847 }
2834} 3848}
2835 3849
2836#endif 3850#endif
… …
2840#else 3854#else
2841# define EV_LSTAT(p,b) lstat (p, b) 3855# define EV_LSTAT(p,b) lstat (p, b)
2842#endif 3856#endif
2843 3857
2844void 3858void
2845ev_stat_stat (EV_P_ ev_stat *w) 3859ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2846{ 3860{
2847 if (lstat (w->path, &w->attr) < 0) 3861 if (lstat (w->path, &w->attr) < 0)
2848 w->attr.st_nlink = 0; 3862 w->attr.st_nlink = 0;
2849 else if (!w->attr.st_nlink) 3863 else if (!w->attr.st_nlink)
2850 w->attr.st_nlink = 1; 3864 w->attr.st_nlink = 1;
… …
2853static void noinline 3867static void noinline
2854stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3868stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2855{ 3869{
2856 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3870 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2857 3871
2858 /* we copy this here each the time so that */ 3872 ev_statdata prev = w->attr;
2859 /* prev has the old value when the callback gets invoked */
2860 w->prev = w->attr;
2861 ev_stat_stat (EV_A_ w); 3873 ev_stat_stat (EV_A_ w);
2862 3874
2863 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3875 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2864 if ( 3876 if (
2865 w->prev.st_dev != w->attr.st_dev 3877 prev.st_dev != w->attr.st_dev
2866 || w->prev.st_ino != w->attr.st_ino 3878 || prev.st_ino != w->attr.st_ino
2867 || w->prev.st_mode != w->attr.st_mode 3879 || prev.st_mode != w->attr.st_mode
2868 || w->prev.st_nlink != w->attr.st_nlink 3880 || prev.st_nlink != w->attr.st_nlink
2869 || w->prev.st_uid != w->attr.st_uid 3881 || prev.st_uid != w->attr.st_uid
2870 || w->prev.st_gid != w->attr.st_gid 3882 || prev.st_gid != w->attr.st_gid
2871 || w->prev.st_rdev != w->attr.st_rdev 3883 || prev.st_rdev != w->attr.st_rdev
2872 || w->prev.st_size != w->attr.st_size 3884 || prev.st_size != w->attr.st_size
2873 || w->prev.st_atime != w->attr.st_atime 3885 || prev.st_atime != w->attr.st_atime
2874 || w->prev.st_mtime != w->attr.st_mtime 3886 || prev.st_mtime != w->attr.st_mtime
2875 || w->prev.st_ctime != w->attr.st_ctime 3887 || prev.st_ctime != w->attr.st_ctime
2876 ) { 3888 ) {
3889 /* we only update w->prev on actual differences */
3890 /* in case we test more often than invoke the callback, */
3891 /* to ensure that prev is always different to attr */
3892 w->prev = prev;
3893
2877 #if EV_USE_INOTIFY 3894 #if EV_USE_INOTIFY
2878 if (fs_fd >= 0) 3895 if (fs_fd >= 0)
2879 { 3896 {
2880 infy_del (EV_A_ w); 3897 infy_del (EV_A_ w);
2881 infy_add (EV_A_ w); 3898 infy_add (EV_A_ w);
… …
2886 ev_feed_event (EV_A_ w, EV_STAT); 3903 ev_feed_event (EV_A_ w, EV_STAT);
2887 } 3904 }
2888} 3905}
2889 3906
2890void 3907void
2891ev_stat_start (EV_P_ ev_stat *w) 3908ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2892{ 3909{
2893 if (expect_false (ev_is_active (w))) 3910 if (expect_false (ev_is_active (w)))
2894 return; 3911 return;
2895 3912
2896 ev_stat_stat (EV_A_ w); 3913 ev_stat_stat (EV_A_ w);
… …
2906 3923
2907 if (fs_fd >= 0) 3924 if (fs_fd >= 0)
2908 infy_add (EV_A_ w); 3925 infy_add (EV_A_ w);
2909 else 3926 else
2910#endif 3927#endif
3928 {
2911 ev_timer_again (EV_A_ &w->timer); 3929 ev_timer_again (EV_A_ &w->timer);
3930 ev_unref (EV_A);
3931 }
2912 3932
2913 ev_start (EV_A_ (W)w, 1); 3933 ev_start (EV_A_ (W)w, 1);
2914 3934
2915 EV_FREQUENT_CHECK; 3935 EV_FREQUENT_CHECK;
2916} 3936}
2917 3937
2918void 3938void
2919ev_stat_stop (EV_P_ ev_stat *w) 3939ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2920{ 3940{
2921 clear_pending (EV_A_ (W)w); 3941 clear_pending (EV_A_ (W)w);
2922 if (expect_false (!ev_is_active (w))) 3942 if (expect_false (!ev_is_active (w)))
2923 return; 3943 return;
2924 3944
2925 EV_FREQUENT_CHECK; 3945 EV_FREQUENT_CHECK;
2926 3946
2927#if EV_USE_INOTIFY 3947#if EV_USE_INOTIFY
2928 infy_del (EV_A_ w); 3948 infy_del (EV_A_ w);
2929#endif 3949#endif
3950
3951 if (ev_is_active (&w->timer))
3952 {
3953 ev_ref (EV_A);
2930 ev_timer_stop (EV_A_ &w->timer); 3954 ev_timer_stop (EV_A_ &w->timer);
3955 }
2931 3956
2932 ev_stop (EV_A_ (W)w); 3957 ev_stop (EV_A_ (W)w);
2933 3958
2934 EV_FREQUENT_CHECK; 3959 EV_FREQUENT_CHECK;
2935} 3960}
2936#endif 3961#endif
2937 3962
2938#if EV_IDLE_ENABLE 3963#if EV_IDLE_ENABLE
2939void 3964void
2940ev_idle_start (EV_P_ ev_idle *w) 3965ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2941{ 3966{
2942 if (expect_false (ev_is_active (w))) 3967 if (expect_false (ev_is_active (w)))
2943 return; 3968 return;
2944 3969
2945 pri_adjust (EV_A_ (W)w); 3970 pri_adjust (EV_A_ (W)w);
… …
2958 3983
2959 EV_FREQUENT_CHECK; 3984 EV_FREQUENT_CHECK;
2960} 3985}
2961 3986
2962void 3987void
2963ev_idle_stop (EV_P_ ev_idle *w) 3988ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2964{ 3989{
2965 clear_pending (EV_A_ (W)w); 3990 clear_pending (EV_A_ (W)w);
2966 if (expect_false (!ev_is_active (w))) 3991 if (expect_false (!ev_is_active (w)))
2967 return; 3992 return;
2968 3993
… …
2980 4005
2981 EV_FREQUENT_CHECK; 4006 EV_FREQUENT_CHECK;
2982} 4007}
2983#endif 4008#endif
2984 4009
4010#if EV_PREPARE_ENABLE
2985void 4011void
2986ev_prepare_start (EV_P_ ev_prepare *w) 4012ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2987{ 4013{
2988 if (expect_false (ev_is_active (w))) 4014 if (expect_false (ev_is_active (w)))
2989 return; 4015 return;
2990 4016
2991 EV_FREQUENT_CHECK; 4017 EV_FREQUENT_CHECK;
… …
2996 4022
2997 EV_FREQUENT_CHECK; 4023 EV_FREQUENT_CHECK;
2998} 4024}
2999 4025
3000void 4026void
3001ev_prepare_stop (EV_P_ ev_prepare *w) 4027ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3002{ 4028{
3003 clear_pending (EV_A_ (W)w); 4029 clear_pending (EV_A_ (W)w);
3004 if (expect_false (!ev_is_active (w))) 4030 if (expect_false (!ev_is_active (w)))
3005 return; 4031 return;
3006 4032
… …
3015 4041
3016 ev_stop (EV_A_ (W)w); 4042 ev_stop (EV_A_ (W)w);
3017 4043
3018 EV_FREQUENT_CHECK; 4044 EV_FREQUENT_CHECK;
3019} 4045}
4046#endif
3020 4047
4048#if EV_CHECK_ENABLE
3021void 4049void
3022ev_check_start (EV_P_ ev_check *w) 4050ev_check_start (EV_P_ ev_check *w) EV_THROW
3023{ 4051{
3024 if (expect_false (ev_is_active (w))) 4052 if (expect_false (ev_is_active (w)))
3025 return; 4053 return;
3026 4054
3027 EV_FREQUENT_CHECK; 4055 EV_FREQUENT_CHECK;
… …
3032 4060
3033 EV_FREQUENT_CHECK; 4061 EV_FREQUENT_CHECK;
3034} 4062}
3035 4063
3036void 4064void
3037ev_check_stop (EV_P_ ev_check *w) 4065ev_check_stop (EV_P_ ev_check *w) EV_THROW
3038{ 4066{
3039 clear_pending (EV_A_ (W)w); 4067 clear_pending (EV_A_ (W)w);
3040 if (expect_false (!ev_is_active (w))) 4068 if (expect_false (!ev_is_active (w)))
3041 return; 4069 return;
3042 4070
… …
3051 4079
3052 ev_stop (EV_A_ (W)w); 4080 ev_stop (EV_A_ (W)w);
3053 4081
3054 EV_FREQUENT_CHECK; 4082 EV_FREQUENT_CHECK;
3055} 4083}
4084#endif
3056 4085
3057#if EV_EMBED_ENABLE 4086#if EV_EMBED_ENABLE
3058void noinline 4087void noinline
3059ev_embed_sweep (EV_P_ ev_embed *w) 4088ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3060{ 4089{
3061 ev_loop (w->other, EVLOOP_NONBLOCK); 4090 ev_run (w->other, EVRUN_NOWAIT);
3062} 4091}
3063 4092
3064static void 4093static void
3065embed_io_cb (EV_P_ ev_io *io, int revents) 4094embed_io_cb (EV_P_ ev_io *io, int revents)
3066{ 4095{
3067 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4096 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3068 4097
3069 if (ev_cb (w)) 4098 if (ev_cb (w))
3070 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4099 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3071 else 4100 else
3072 ev_loop (w->other, EVLOOP_NONBLOCK); 4101 ev_run (w->other, EVRUN_NOWAIT);
3073} 4102}
3074 4103
3075static void 4104static void
3076embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4105embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3077{ 4106{
3078 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4107 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3079 4108
3080 { 4109 {
3081 struct ev_loop *loop = w->other; 4110 EV_P = w->other;
3082 4111
3083 while (fdchangecnt) 4112 while (fdchangecnt)
3084 { 4113 {
3085 fd_reify (EV_A); 4114 fd_reify (EV_A);
3086 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4115 ev_run (EV_A_ EVRUN_NOWAIT);
3087 } 4116 }
3088 } 4117 }
3089} 4118}
3090 4119
3091static void 4120static void
… …
3094 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4123 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3095 4124
3096 ev_embed_stop (EV_A_ w); 4125 ev_embed_stop (EV_A_ w);
3097 4126
3098 { 4127 {
3099 struct ev_loop *loop = w->other; 4128 EV_P = w->other;
3100 4129
3101 ev_loop_fork (EV_A); 4130 ev_loop_fork (EV_A);
3102 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4131 ev_run (EV_A_ EVRUN_NOWAIT);
3103 } 4132 }
3104 4133
3105 ev_embed_start (EV_A_ w); 4134 ev_embed_start (EV_A_ w);
3106} 4135}
3107 4136
… …
3112 ev_idle_stop (EV_A_ idle); 4141 ev_idle_stop (EV_A_ idle);
3113} 4142}
3114#endif 4143#endif
3115 4144
3116void 4145void
3117ev_embed_start (EV_P_ ev_embed *w) 4146ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3118{ 4147{
3119 if (expect_false (ev_is_active (w))) 4148 if (expect_false (ev_is_active (w)))
3120 return; 4149 return;
3121 4150
3122 { 4151 {
3123 struct ev_loop *loop = w->other; 4152 EV_P = w->other;
3124 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4153 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3125 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4154 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3126 } 4155 }
3127 4156
3128 EV_FREQUENT_CHECK; 4157 EV_FREQUENT_CHECK;
… …
3143 4172
3144 EV_FREQUENT_CHECK; 4173 EV_FREQUENT_CHECK;
3145} 4174}
3146 4175
3147void 4176void
3148ev_embed_stop (EV_P_ ev_embed *w) 4177ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3149{ 4178{
3150 clear_pending (EV_A_ (W)w); 4179 clear_pending (EV_A_ (W)w);
3151 if (expect_false (!ev_is_active (w))) 4180 if (expect_false (!ev_is_active (w)))
3152 return; 4181 return;
3153 4182
… …
3155 4184
3156 ev_io_stop (EV_A_ &w->io); 4185 ev_io_stop (EV_A_ &w->io);
3157 ev_prepare_stop (EV_A_ &w->prepare); 4186 ev_prepare_stop (EV_A_ &w->prepare);
3158 ev_fork_stop (EV_A_ &w->fork); 4187 ev_fork_stop (EV_A_ &w->fork);
3159 4188
4189 ev_stop (EV_A_ (W)w);
4190
3160 EV_FREQUENT_CHECK; 4191 EV_FREQUENT_CHECK;
3161} 4192}
3162#endif 4193#endif
3163 4194
3164#if EV_FORK_ENABLE 4195#if EV_FORK_ENABLE
3165void 4196void
3166ev_fork_start (EV_P_ ev_fork *w) 4197ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3167{ 4198{
3168 if (expect_false (ev_is_active (w))) 4199 if (expect_false (ev_is_active (w)))
3169 return; 4200 return;
3170 4201
3171 EV_FREQUENT_CHECK; 4202 EV_FREQUENT_CHECK;
… …
3176 4207
3177 EV_FREQUENT_CHECK; 4208 EV_FREQUENT_CHECK;
3178} 4209}
3179 4210
3180void 4211void
3181ev_fork_stop (EV_P_ ev_fork *w) 4212ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3182{ 4213{
3183 clear_pending (EV_A_ (W)w); 4214 clear_pending (EV_A_ (W)w);
3184 if (expect_false (!ev_is_active (w))) 4215 if (expect_false (!ev_is_active (w)))
3185 return; 4216 return;
3186 4217
… …
3197 4228
3198 EV_FREQUENT_CHECK; 4229 EV_FREQUENT_CHECK;
3199} 4230}
3200#endif 4231#endif
3201 4232
4233#if EV_CLEANUP_ENABLE
4234void
4235ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4236{
4237 if (expect_false (ev_is_active (w)))
4238 return;
4239
4240 EV_FREQUENT_CHECK;
4241
4242 ev_start (EV_A_ (W)w, ++cleanupcnt);
4243 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4244 cleanups [cleanupcnt - 1] = w;
4245
4246 /* cleanup watchers should never keep a refcount on the loop */
4247 ev_unref (EV_A);
4248 EV_FREQUENT_CHECK;
4249}
4250
4251void
4252ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4253{
4254 clear_pending (EV_A_ (W)w);
4255 if (expect_false (!ev_is_active (w)))
4256 return;
4257
4258 EV_FREQUENT_CHECK;
4259 ev_ref (EV_A);
4260
4261 {
4262 int active = ev_active (w);
4263
4264 cleanups [active - 1] = cleanups [--cleanupcnt];
4265 ev_active (cleanups [active - 1]) = active;
4266 }
4267
4268 ev_stop (EV_A_ (W)w);
4269
4270 EV_FREQUENT_CHECK;
4271}
4272#endif
4273
3202#if EV_ASYNC_ENABLE 4274#if EV_ASYNC_ENABLE
3203void 4275void
3204ev_async_start (EV_P_ ev_async *w) 4276ev_async_start (EV_P_ ev_async *w) EV_THROW
3205{ 4277{
3206 if (expect_false (ev_is_active (w))) 4278 if (expect_false (ev_is_active (w)))
3207 return; 4279 return;
4280
4281 w->sent = 0;
3208 4282
3209 evpipe_init (EV_A); 4283 evpipe_init (EV_A);
3210 4284
3211 EV_FREQUENT_CHECK; 4285 EV_FREQUENT_CHECK;
3212 4286
… …
3216 4290
3217 EV_FREQUENT_CHECK; 4291 EV_FREQUENT_CHECK;
3218} 4292}
3219 4293
3220void 4294void
3221ev_async_stop (EV_P_ ev_async *w) 4295ev_async_stop (EV_P_ ev_async *w) EV_THROW
3222{ 4296{
3223 clear_pending (EV_A_ (W)w); 4297 clear_pending (EV_A_ (W)w);
3224 if (expect_false (!ev_is_active (w))) 4298 if (expect_false (!ev_is_active (w)))
3225 return; 4299 return;
3226 4300
… …
3237 4311
3238 EV_FREQUENT_CHECK; 4312 EV_FREQUENT_CHECK;
3239} 4313}
3240 4314
3241void 4315void
3242ev_async_send (EV_P_ ev_async *w) 4316ev_async_send (EV_P_ ev_async *w) EV_THROW
3243{ 4317{
3244 w->sent = 1; 4318 w->sent = 1;
3245 evpipe_write (EV_A_ &gotasync); 4319 evpipe_write (EV_A_ &async_pending);
3246} 4320}
3247#endif 4321#endif
3248 4322
3249/*****************************************************************************/ 4323/*****************************************************************************/
3250 4324
… …
3284 4358
3285 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4359 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3286} 4360}
3287 4361
3288void 4362void
3289ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4363ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3290{ 4364{
3291 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4365 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3292 4366
3293 if (expect_false (!once)) 4367 if (expect_false (!once))
3294 { 4368 {
3295 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4369 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3296 return; 4370 return;
3297 } 4371 }
3298 4372
3299 once->cb = cb; 4373 once->cb = cb;
3300 once->arg = arg; 4374 once->arg = arg;
… …
3315} 4389}
3316 4390
3317/*****************************************************************************/ 4391/*****************************************************************************/
3318 4392
3319#if EV_WALK_ENABLE 4393#if EV_WALK_ENABLE
3320void 4394void ecb_cold
3321ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4395ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3322{ 4396{
3323 int i, j; 4397 int i, j;
3324 ev_watcher_list *wl, *wn; 4398 ev_watcher_list *wl, *wn;
3325 4399
3326 if (types & (EV_IO | EV_EMBED)) 4400 if (types & (EV_IO | EV_EMBED))
… …
3369 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4443 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3370#endif 4444#endif
3371 4445
3372#if EV_IDLE_ENABLE 4446#if EV_IDLE_ENABLE
3373 if (types & EV_IDLE) 4447 if (types & EV_IDLE)
3374 for (j = NUMPRI; i--; ) 4448 for (j = NUMPRI; j--; )
3375 for (i = idlecnt [j]; i--; ) 4449 for (i = idlecnt [j]; i--; )
3376 cb (EV_A_ EV_IDLE, idles [j][i]); 4450 cb (EV_A_ EV_IDLE, idles [j][i]);
3377#endif 4451#endif
3378 4452
3379#if EV_FORK_ENABLE 4453#if EV_FORK_ENABLE
… …
3387 if (types & EV_ASYNC) 4461 if (types & EV_ASYNC)
3388 for (i = asynccnt; i--; ) 4462 for (i = asynccnt; i--; )
3389 cb (EV_A_ EV_ASYNC, asyncs [i]); 4463 cb (EV_A_ EV_ASYNC, asyncs [i]);
3390#endif 4464#endif
3391 4465
4466#if EV_PREPARE_ENABLE
3392 if (types & EV_PREPARE) 4467 if (types & EV_PREPARE)
3393 for (i = preparecnt; i--; ) 4468 for (i = preparecnt; i--; )
3394#if EV_EMBED_ENABLE 4469# if EV_EMBED_ENABLE
3395 if (ev_cb (prepares [i]) != embed_prepare_cb) 4470 if (ev_cb (prepares [i]) != embed_prepare_cb)
3396#endif 4471# endif
3397 cb (EV_A_ EV_PREPARE, prepares [i]); 4472 cb (EV_A_ EV_PREPARE, prepares [i]);
4473#endif
3398 4474
4475#if EV_CHECK_ENABLE
3399 if (types & EV_CHECK) 4476 if (types & EV_CHECK)
3400 for (i = checkcnt; i--; ) 4477 for (i = checkcnt; i--; )
3401 cb (EV_A_ EV_CHECK, checks [i]); 4478 cb (EV_A_ EV_CHECK, checks [i]);
4479#endif
3402 4480
4481#if EV_SIGNAL_ENABLE
3403 if (types & EV_SIGNAL) 4482 if (types & EV_SIGNAL)
3404 for (i = 0; i < signalmax; ++i) 4483 for (i = 0; i < EV_NSIG - 1; ++i)
3405 for (wl = signals [i].head; wl; ) 4484 for (wl = signals [i].head; wl; )
3406 { 4485 {
3407 wn = wl->next; 4486 wn = wl->next;
3408 cb (EV_A_ EV_SIGNAL, wl); 4487 cb (EV_A_ EV_SIGNAL, wl);
3409 wl = wn; 4488 wl = wn;
3410 } 4489 }
4490#endif
3411 4491
4492#if EV_CHILD_ENABLE
3412 if (types & EV_CHILD) 4493 if (types & EV_CHILD)
3413 for (i = EV_PID_HASHSIZE; i--; ) 4494 for (i = (EV_PID_HASHSIZE); i--; )
3414 for (wl = childs [i]; wl; ) 4495 for (wl = childs [i]; wl; )
3415 { 4496 {
3416 wn = wl->next; 4497 wn = wl->next;
3417 cb (EV_A_ EV_CHILD, wl); 4498 cb (EV_A_ EV_CHILD, wl);
3418 wl = wn; 4499 wl = wn;
3419 } 4500 }
4501#endif
3420/* EV_STAT 0x00001000 /* stat data changed */ 4502/* EV_STAT 0x00001000 /* stat data changed */
3421/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4503/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3422} 4504}
3423#endif 4505#endif
3424 4506
3425#if EV_MULTIPLICITY 4507#if EV_MULTIPLICITY
3426 #include "ev_wrap.h" 4508 #include "ev_wrap.h"
3427#endif 4509#endif
3428 4510
3429#ifdef __cplusplus
3430}
3431#endif
3432

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