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Comparing libev/ev.c (file contents):
Revision 1.294 by root, Wed Jul 8 02:46:05 2009 UTC vs.
Revision 1.447 by root, Tue Jun 19 12:29:43 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>
171# include <unistd.h> 202# include <unistd.h>
172#else 203#else
173# include <io.h> 204# include <io.h>
174# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
175# include <windows.h> 207# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
178# endif 210# endif
211# undef EV_AVOID_STDIO
179#endif 212#endif
213
214/* OS X, in its infinite idiocy, actually HARDCODES
215 * a limit of 1024 into their select. Where people have brains,
216 * OS X engineers apparently have a vacuum. Or maybe they were
217 * ordered to have a vacuum, or they do anything for money.
218 * This might help. Or not.
219 */
220#define _DARWIN_UNLIMITED_SELECT 1
180 221
181/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
223
224/* try to deduce the maximum number of signals on this platform */
225#if defined EV_NSIG
226/* use what's provided */
227#elif defined NSIG
228# define EV_NSIG (NSIG)
229#elif defined _NSIG
230# define EV_NSIG (_NSIG)
231#elif defined SIGMAX
232# define EV_NSIG (SIGMAX+1)
233#elif defined SIG_MAX
234# define EV_NSIG (SIG_MAX+1)
235#elif defined _SIG_MAX
236# define EV_NSIG (_SIG_MAX+1)
237#elif defined MAXSIG
238# define EV_NSIG (MAXSIG+1)
239#elif defined MAX_SIG
240# define EV_NSIG (MAX_SIG+1)
241#elif defined SIGARRAYSIZE
242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243#elif defined _sys_nsig
244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245#else
246# error "unable to find value for NSIG, please report"
247/* to make it compile regardless, just remove the above line, */
248/* but consider reporting it, too! :) */
249# define EV_NSIG 65
250#endif
251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
182 255
183#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
185# define EV_USE_CLOCK_SYSCALL 1 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 259# else
187# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
188# endif 261# endif
189#endif 262#endif
190 263
191#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 266# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 267# else
195# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
196# endif 269# endif
197#endif 270#endif
198 271
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 274#endif
202 275
203#ifndef EV_USE_NANOSLEEP 276#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 277# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 278# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 279# else
207# define EV_USE_NANOSLEEP 0 280# define EV_USE_NANOSLEEP 0
208# endif 281# endif
209#endif 282#endif
210 283
211#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 286#endif
214 287
215#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
216# ifdef _WIN32 289# ifdef _WIN32
217# define EV_USE_POLL 0 290# define EV_USE_POLL 0
218# else 291# else
219# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 293# endif
221#endif 294#endif
222 295
223#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 299# else
227# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
228# endif 301# endif
229#endif 302#endif
230 303
… …
236# define EV_USE_PORT 0 309# define EV_USE_PORT 0
237#endif 310#endif
238 311
239#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 315# else
243# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
244# endif 317# endif
245#endif 318#endif
246 319
247#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 321# 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 322#endif
254 323
255#ifndef EV_INOTIFY_HASHSIZE 324#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 325# 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 326#endif
262 327
263#ifndef EV_USE_EVENTFD 328#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 330# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 331# else
267# define EV_USE_EVENTFD 0 332# define EV_USE_EVENTFD 0
333# endif
334#endif
335
336#ifndef EV_USE_SIGNALFD
337# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
338# define EV_USE_SIGNALFD EV_FEATURE_OS
339# else
340# define EV_USE_SIGNALFD 0
268# endif 341# endif
269#endif 342#endif
270 343
271#if 0 /* debugging */ 344#if 0 /* debugging */
272# define EV_VERIFY 3 345# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 346# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 347# define EV_HEAP_CACHE_AT 1
275#endif 348#endif
276 349
277#ifndef EV_VERIFY 350#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 352#endif
280 353
281#ifndef EV_USE_4HEAP 354#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 355# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 356#endif
284 357
285#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
287#endif 360#endif
288 361
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 362/* 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. */ 363/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 364#if EV_USE_CLOCK_SYSCALL
292# include <syscall.h> 365# include <sys/syscall.h>
293# ifdef SYS_clock_gettime 366# ifdef SYS_clock_gettime
294# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
295# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
296# define EV_USE_MONOTONIC 1 369# define EV_USE_MONOTONIC 1
297# else 370# else
… …
300# endif 373# endif
301#endif 374#endif
302 375
303/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 376/* this block fixes any misconfiguration where we know we run into trouble otherwise */
304 377
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
383
305#ifndef CLOCK_MONOTONIC 384#ifndef CLOCK_MONOTONIC
306# undef EV_USE_MONOTONIC 385# undef EV_USE_MONOTONIC
307# define EV_USE_MONOTONIC 0 386# define EV_USE_MONOTONIC 0
308#endif 387#endif
309 388
… …
316# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
318#endif 397#endif
319 398
320#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
322# include <sys/select.h> 402# include <sys/select.h>
323# endif 403# endif
324#endif 404#endif
325 405
326#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 407# include <sys/statfs.h>
329# include <sys/inotify.h> 408# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 409/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
333# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
334# endif 413# endif
335#endif 414#endif
336 415
337#if EV_SELECT_IS_WINSOCKET
338# include <winsock.h>
339#endif
340
341#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
342/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343# include <stdint.h> 418# include <stdint.h>
344# ifdef __cplusplus 419# ifndef EFD_NONBLOCK
345extern "C" { 420# define EFD_NONBLOCK O_NONBLOCK
346# endif 421# endif
347int eventfd (unsigned int initval, int flags); 422# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 423# ifdef O_CLOEXEC
349} 424# define EFD_CLOEXEC O_CLOEXEC
425# else
426# define EFD_CLOEXEC 02000000
427# endif
350# endif 428# endif
429EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
430#endif
431
432#if EV_USE_SIGNALFD
433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
434# include <stdint.h>
435# ifndef SFD_NONBLOCK
436# define SFD_NONBLOCK O_NONBLOCK
437# endif
438# ifndef SFD_CLOEXEC
439# ifdef O_CLOEXEC
440# define SFD_CLOEXEC O_CLOEXEC
441# else
442# define SFD_CLOEXEC 02000000
443# endif
444# endif
445EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
446
447struct signalfd_siginfo
448{
449 uint32_t ssi_signo;
450 char pad[128 - sizeof (uint32_t)];
451};
351#endif 452#endif
352 453
353/**/ 454/**/
354 455
355#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 458#else
358# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
359#endif 460#endif
360 461
361/* 462/*
362 * This is used to avoid floating point rounding problems. 463 * 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. 464 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 465 */
369#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 466#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
467/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
370 468
371#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 469#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) */ 470#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 */
374 471
472#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
473#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
474
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */
477/*
478 * libecb - http://software.schmorp.de/pkg/libecb
479 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved.
483 *
484 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met:
486 *
487 * 1. Redistributions of source code must retain the above copyright notice,
488 * this list of conditions and the following disclaimer.
489 *
490 * 2. Redistributions in binary form must reproduce the above copyright
491 * notice, this list of conditions and the following disclaimer in the
492 * documentation and/or other materials provided with the distribution.
493 *
494 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
495 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
496 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
497 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
498 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE.
504 */
505
506#ifndef ECB_H
507#define ECB_H
508
509/* 16 bits major, 16 bits minor */
510#define ECB_VERSION 0x00010001
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
526 #ifdef _WIN64
527 #define ECB_PTRSIZE 8
528 typedef uint64_t uintptr_t;
529 typedef int64_t intptr_t;
530 #else
531 #define ECB_PTRSIZE 4
532 typedef uint32_t uintptr_t;
533 typedef int32_t intptr_t;
534 #endif
535 typedef intptr_t ptrdiff_t;
378#else 536#else
379# define expect(expr,value) (expr) 537 #include <inttypes.h>
380# define noinline 538 #if UINTMAX_MAX > 0xffffffffU
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 539 #define ECB_PTRSIZE 8
382# define inline 540 #else
541 #define ECB_PTRSIZE 4
542 #endif
383# endif 543#endif
544
545/* many compilers define _GNUC_ to some versions but then only implement
546 * what their idiot authors think are the "more important" extensions,
547 * causing enormous grief in return for some better fake benchmark numbers.
548 * or so.
549 * we try to detect these and simply assume they are not gcc - if they have
550 * an issue with that they should have done it right in the first place.
551 */
552#ifndef ECB_GCC_VERSION
553 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
554 #define ECB_GCC_VERSION(major,minor) 0
555 #else
556 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
384#endif 557 #endif
558#endif
385 559
560#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
561#define ECB_C99 (__STDC_VERSION__ >= 199901L)
562#define ECB_C11 (__STDC_VERSION__ >= 201112L)
563#define ECB_CPP (__cplusplus+0)
564#define ECB_CPP11 (__cplusplus >= 201103L)
565
566/*****************************************************************************/
567
568/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
569/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
570
571#if ECB_NO_THREADS
572 #define ECB_NO_SMP 1
573#endif
574
575#if ECB_NO_SMP
576 #define ECB_MEMORY_FENCE do { } while (0)
577#endif
578
579#ifndef ECB_MEMORY_FENCE
580 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
581 #if __i386 || __i386__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
583 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
584 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
585 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
586 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
587 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
588 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
589 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
590 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
591 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
592 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
593 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
594 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
595 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
596 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
597 #elif __sparc || __sparc__
598 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
599 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
600 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
601 #elif defined __s390__ || defined __s390x__
602 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
603 #elif defined __mips__
604 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
605 #elif defined __alpha__
606 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
607 #elif defined __hppa__
608 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
610 #elif defined __ia64__
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
612 #endif
613 #endif
614#endif
615
616#ifndef ECB_MEMORY_FENCE
617 #if ECB_GCC_VERSION(4,7)
618 /* see comment below (stdatomic.h) about the C11 memory model. */
619 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
620 #elif defined __clang && __has_feature (cxx_atomic)
621 /* see comment below (stdatomic.h) about the C11 memory model. */
622 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
623 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
624 #define ECB_MEMORY_FENCE __sync_synchronize ()
625 #elif _MSC_VER >= 1400 /* VC++ 2005 */
626 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
627 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
628 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
629 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
630 #elif defined _WIN32
631 #include <WinNT.h>
632 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
633 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
634 #include <mbarrier.h>
635 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
636 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
637 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
638 #elif __xlC__
639 #define ECB_MEMORY_FENCE __sync ()
640 #endif
641#endif
642
643#ifndef ECB_MEMORY_FENCE
644 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
645 /* we assume that these memory fences work on all variables/all memory accesses, */
646 /* not just C11 atomics and atomic accesses */
647 #include <stdatomic.h>
648 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
649 /* any fence other than seq_cst, which isn't very efficient for us. */
650 /* Why that is, we don't know - either the C11 memory model is quite useless */
651 /* for most usages, or gcc and clang have a bug */
652 /* I *currently* lean towards the latter, and inefficiently implement */
653 /* all three of ecb's fences as a seq_cst fence */
654 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
655 #endif
656#endif
657
658#ifndef ECB_MEMORY_FENCE
659 #if !ECB_AVOID_PTHREADS
660 /*
661 * if you get undefined symbol references to pthread_mutex_lock,
662 * or failure to find pthread.h, then you should implement
663 * the ECB_MEMORY_FENCE operations for your cpu/compiler
664 * OR provide pthread.h and link against the posix thread library
665 * of your system.
666 */
667 #include <pthread.h>
668 #define ECB_NEEDS_PTHREADS 1
669 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
670
671 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
672 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
673 #endif
674#endif
675
676#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
677 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
678#endif
679
680#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
681 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
682#endif
683
684/*****************************************************************************/
685
686#if __cplusplus
687 #define ecb_inline static inline
688#elif ECB_GCC_VERSION(2,5)
689 #define ecb_inline static __inline__
690#elif ECB_C99
691 #define ecb_inline static inline
692#else
693 #define ecb_inline static
694#endif
695
696#if ECB_GCC_VERSION(3,3)
697 #define ecb_restrict __restrict__
698#elif ECB_C99
699 #define ecb_restrict restrict
700#else
701 #define ecb_restrict
702#endif
703
704typedef int ecb_bool;
705
706#define ECB_CONCAT_(a, b) a ## b
707#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
708#define ECB_STRINGIFY_(a) # a
709#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
710
711#define ecb_function_ ecb_inline
712
713#if ECB_GCC_VERSION(3,1)
714 #define ecb_attribute(attrlist) __attribute__(attrlist)
715 #define ecb_is_constant(expr) __builtin_constant_p (expr)
716 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
717 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
718#else
719 #define ecb_attribute(attrlist)
720 #define ecb_is_constant(expr) 0
721 #define ecb_expect(expr,value) (expr)
722 #define ecb_prefetch(addr,rw,locality)
723#endif
724
725/* no emulation for ecb_decltype */
726#if ECB_GCC_VERSION(4,5)
727 #define ecb_decltype(x) __decltype(x)
728#elif ECB_GCC_VERSION(3,0)
729 #define ecb_decltype(x) __typeof(x)
730#endif
731
732#define ecb_noinline ecb_attribute ((__noinline__))
733#define ecb_unused ecb_attribute ((__unused__))
734#define ecb_const ecb_attribute ((__const__))
735#define ecb_pure ecb_attribute ((__pure__))
736
737#if ECB_C11
738 #define ecb_noreturn _Noreturn
739#else
740 #define ecb_noreturn ecb_attribute ((__noreturn__))
741#endif
742
743#if ECB_GCC_VERSION(4,3)
744 #define ecb_artificial ecb_attribute ((__artificial__))
745 #define ecb_hot ecb_attribute ((__hot__))
746 #define ecb_cold ecb_attribute ((__cold__))
747#else
748 #define ecb_artificial
749 #define ecb_hot
750 #define ecb_cold
751#endif
752
753/* put around conditional expressions if you are very sure that the */
754/* expression is mostly true or mostly false. note that these return */
755/* booleans, not the expression. */
386#define expect_false(expr) expect ((expr) != 0, 0) 756#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 757#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
758/* for compatibility to the rest of the world */
759#define ecb_likely(expr) ecb_expect_true (expr)
760#define ecb_unlikely(expr) ecb_expect_false (expr)
761
762/* count trailing zero bits and count # of one bits */
763#if ECB_GCC_VERSION(3,4)
764 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
765 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
766 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
767 #define ecb_ctz32(x) __builtin_ctz (x)
768 #define ecb_ctz64(x) __builtin_ctzll (x)
769 #define ecb_popcount32(x) __builtin_popcount (x)
770 /* no popcountll */
771#else
772 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
773 ecb_function_ int
774 ecb_ctz32 (uint32_t x)
775 {
776 int r = 0;
777
778 x &= ~x + 1; /* this isolates the lowest bit */
779
780#if ECB_branchless_on_i386
781 r += !!(x & 0xaaaaaaaa) << 0;
782 r += !!(x & 0xcccccccc) << 1;
783 r += !!(x & 0xf0f0f0f0) << 2;
784 r += !!(x & 0xff00ff00) << 3;
785 r += !!(x & 0xffff0000) << 4;
786#else
787 if (x & 0xaaaaaaaa) r += 1;
788 if (x & 0xcccccccc) r += 2;
789 if (x & 0xf0f0f0f0) r += 4;
790 if (x & 0xff00ff00) r += 8;
791 if (x & 0xffff0000) r += 16;
792#endif
793
794 return r;
795 }
796
797 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
798 ecb_function_ int
799 ecb_ctz64 (uint64_t x)
800 {
801 int shift = x & 0xffffffffU ? 0 : 32;
802 return ecb_ctz32 (x >> shift) + shift;
803 }
804
805 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
806 ecb_function_ int
807 ecb_popcount32 (uint32_t x)
808 {
809 x -= (x >> 1) & 0x55555555;
810 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
811 x = ((x >> 4) + x) & 0x0f0f0f0f;
812 x *= 0x01010101;
813
814 return x >> 24;
815 }
816
817 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
818 ecb_function_ int ecb_ld32 (uint32_t x)
819 {
820 int r = 0;
821
822 if (x >> 16) { x >>= 16; r += 16; }
823 if (x >> 8) { x >>= 8; r += 8; }
824 if (x >> 4) { x >>= 4; r += 4; }
825 if (x >> 2) { x >>= 2; r += 2; }
826 if (x >> 1) { r += 1; }
827
828 return r;
829 }
830
831 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
832 ecb_function_ int ecb_ld64 (uint64_t x)
833 {
834 int r = 0;
835
836 if (x >> 32) { x >>= 32; r += 32; }
837
838 return r + ecb_ld32 (x);
839 }
840#endif
841
842ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
843ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
844ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
845ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
846
847ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
848ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
849{
850 return ( (x * 0x0802U & 0x22110U)
851 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
852}
853
854ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
855ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
856{
857 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
858 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
859 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
860 x = ( x >> 8 ) | ( x << 8);
861
862 return x;
863}
864
865ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
866ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
867{
868 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
869 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
870 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
871 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
872 x = ( x >> 16 ) | ( x << 16);
873
874 return x;
875}
876
877/* popcount64 is only available on 64 bit cpus as gcc builtin */
878/* so for this version we are lazy */
879ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
880ecb_function_ int
881ecb_popcount64 (uint64_t x)
882{
883 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
884}
885
886ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
887ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
888ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
889ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
890ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
891ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
892ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
893ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
894
895ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
896ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
897ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
898ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
899ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
900ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
901ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
902ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
903
904#if ECB_GCC_VERSION(4,3)
905 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
906 #define ecb_bswap32(x) __builtin_bswap32 (x)
907 #define ecb_bswap64(x) __builtin_bswap64 (x)
908#else
909 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
910 ecb_function_ uint16_t
911 ecb_bswap16 (uint16_t x)
912 {
913 return ecb_rotl16 (x, 8);
914 }
915
916 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
917 ecb_function_ uint32_t
918 ecb_bswap32 (uint32_t x)
919 {
920 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
921 }
922
923 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
924 ecb_function_ uint64_t
925 ecb_bswap64 (uint64_t x)
926 {
927 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
928 }
929#endif
930
931#if ECB_GCC_VERSION(4,5)
932 #define ecb_unreachable() __builtin_unreachable ()
933#else
934 /* this seems to work fine, but gcc always emits a warning for it :/ */
935 ecb_inline void ecb_unreachable (void) ecb_noreturn;
936 ecb_inline void ecb_unreachable (void) { }
937#endif
938
939/* try to tell the compiler that some condition is definitely true */
940#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
941
942ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
943ecb_inline unsigned char
944ecb_byteorder_helper (void)
945{
946 const uint32_t u = 0x11223344;
947 return *(unsigned char *)&u;
948}
949
950ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
951ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
952ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
953ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
954
955#if ECB_GCC_VERSION(3,0) || ECB_C99
956 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
957#else
958 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
959#endif
960
961#if __cplusplus
962 template<typename T>
963 static inline T ecb_div_rd (T val, T div)
964 {
965 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
966 }
967 template<typename T>
968 static inline T ecb_div_ru (T val, T div)
969 {
970 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
971 }
972#else
973 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
974 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
975#endif
976
977#if ecb_cplusplus_does_not_suck
978 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
979 template<typename T, int N>
980 static inline int ecb_array_length (const T (&arr)[N])
981 {
982 return N;
983 }
984#else
985 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
986#endif
987
988#endif
989
990/* ECB.H END */
991
992#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
993/* if your architecture doesn't need memory fences, e.g. because it is
994 * single-cpu/core, or if you use libev in a project that doesn't use libev
995 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
996 * libev, in which cases the memory fences become nops.
997 * alternatively, you can remove this #error and link against libpthread,
998 * which will then provide the memory fences.
999 */
1000# error "memory fences not defined for your architecture, please report"
1001#endif
1002
1003#ifndef ECB_MEMORY_FENCE
1004# define ECB_MEMORY_FENCE do { } while (0)
1005# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1006# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1007#endif
1008
1009#define expect_false(cond) ecb_expect_false (cond)
1010#define expect_true(cond) ecb_expect_true (cond)
1011#define noinline ecb_noinline
1012
388#define inline_size static inline 1013#define inline_size ecb_inline
389 1014
390#if EV_MINIMAL 1015#if EV_FEATURE_CODE
1016# define inline_speed ecb_inline
1017#else
391# define inline_speed static noinline 1018# define inline_speed static noinline
1019#endif
1020
1021#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1022
1023#if EV_MINPRI == EV_MAXPRI
1024# define ABSPRI(w) (((W)w), 0)
392#else 1025#else
393# define inline_speed static inline
394#endif
395
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1026# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1027#endif
398 1028
399#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1029#define EMPTY /* required for microsofts broken pseudo-c compiler */
400#define EMPTY2(a,b) /* used to suppress some warnings */ 1030#define EMPTY2(a,b) /* used to suppress some warnings */
401 1031
402typedef ev_watcher *W; 1032typedef ev_watcher *W;
… …
406#define ev_active(w) ((W)(w))->active 1036#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at 1037#define ev_at(w) ((WT)(w))->at
408 1038
409#if EV_USE_REALTIME 1039#if EV_USE_REALTIME
410/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1040/* sig_atomic_t is used to avoid per-thread variables or locking but still */
411/* giving it a reasonably high chance of working on typical architetcures */ 1041/* giving it a reasonably high chance of working on typical architectures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1042static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif 1043#endif
414 1044
415#if EV_USE_MONOTONIC 1045#if EV_USE_MONOTONIC
416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1046static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif 1047#endif
418 1048
1049#ifndef EV_FD_TO_WIN32_HANDLE
1050# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1051#endif
1052#ifndef EV_WIN32_HANDLE_TO_FD
1053# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1054#endif
1055#ifndef EV_WIN32_CLOSE_FD
1056# define EV_WIN32_CLOSE_FD(fd) close (fd)
1057#endif
1058
419#ifdef _WIN32 1059#ifdef _WIN32
420# include "ev_win32.c" 1060# include "ev_win32.c"
421#endif 1061#endif
422 1062
423/*****************************************************************************/ 1063/*****************************************************************************/
424 1064
1065/* define a suitable floor function (only used by periodics atm) */
1066
1067#if EV_USE_FLOOR
1068# include <math.h>
1069# define ev_floor(v) floor (v)
1070#else
1071
1072#include <float.h>
1073
1074/* a floor() replacement function, should be independent of ev_tstamp type */
1075static ev_tstamp noinline
1076ev_floor (ev_tstamp v)
1077{
1078 /* the choice of shift factor is not terribly important */
1079#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1080 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1081#else
1082 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1083#endif
1084
1085 /* argument too large for an unsigned long? */
1086 if (expect_false (v >= shift))
1087 {
1088 ev_tstamp f;
1089
1090 if (v == v - 1.)
1091 return v; /* very large number */
1092
1093 f = shift * ev_floor (v * (1. / shift));
1094 return f + ev_floor (v - f);
1095 }
1096
1097 /* special treatment for negative args? */
1098 if (expect_false (v < 0.))
1099 {
1100 ev_tstamp f = -ev_floor (-v);
1101
1102 return f - (f == v ? 0 : 1);
1103 }
1104
1105 /* fits into an unsigned long */
1106 return (unsigned long)v;
1107}
1108
1109#endif
1110
1111/*****************************************************************************/
1112
1113#ifdef __linux
1114# include <sys/utsname.h>
1115#endif
1116
1117static unsigned int noinline ecb_cold
1118ev_linux_version (void)
1119{
1120#ifdef __linux
1121 unsigned int v = 0;
1122 struct utsname buf;
1123 int i;
1124 char *p = buf.release;
1125
1126 if (uname (&buf))
1127 return 0;
1128
1129 for (i = 3+1; --i; )
1130 {
1131 unsigned int c = 0;
1132
1133 for (;;)
1134 {
1135 if (*p >= '0' && *p <= '9')
1136 c = c * 10 + *p++ - '0';
1137 else
1138 {
1139 p += *p == '.';
1140 break;
1141 }
1142 }
1143
1144 v = (v << 8) | c;
1145 }
1146
1147 return v;
1148#else
1149 return 0;
1150#endif
1151}
1152
1153/*****************************************************************************/
1154
1155#if EV_AVOID_STDIO
1156static void noinline ecb_cold
1157ev_printerr (const char *msg)
1158{
1159 write (STDERR_FILENO, msg, strlen (msg));
1160}
1161#endif
1162
425static void (*syserr_cb)(const char *msg); 1163static void (*syserr_cb)(const char *msg) EV_THROW;
426 1164
427void 1165void ecb_cold
428ev_set_syserr_cb (void (*cb)(const char *msg)) 1166ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
429{ 1167{
430 syserr_cb = cb; 1168 syserr_cb = cb;
431} 1169}
432 1170
433static void noinline 1171static void noinline ecb_cold
434ev_syserr (const char *msg) 1172ev_syserr (const char *msg)
435{ 1173{
436 if (!msg) 1174 if (!msg)
437 msg = "(libev) system error"; 1175 msg = "(libev) system error";
438 1176
439 if (syserr_cb) 1177 if (syserr_cb)
440 syserr_cb (msg); 1178 syserr_cb (msg);
441 else 1179 else
442 { 1180 {
1181#if EV_AVOID_STDIO
1182 ev_printerr (msg);
1183 ev_printerr (": ");
1184 ev_printerr (strerror (errno));
1185 ev_printerr ("\n");
1186#else
443 perror (msg); 1187 perror (msg);
1188#endif
444 abort (); 1189 abort ();
445 } 1190 }
446} 1191}
447 1192
448static void * 1193static void *
449ev_realloc_emul (void *ptr, long size) 1194ev_realloc_emul (void *ptr, long size) EV_THROW
450{ 1195{
451 /* some systems, notably openbsd and darwin, fail to properly 1196 /* some systems, notably openbsd and darwin, fail to properly
452 * implement realloc (x, 0) (as required by both ansi c-98 and 1197 * implement realloc (x, 0) (as required by both ansi c-89 and
453 * the single unix specification, so work around them here. 1198 * the single unix specification, so work around them here.
1199 * recently, also (at least) fedora and debian started breaking it,
1200 * despite documenting it otherwise.
454 */ 1201 */
455 1202
456 if (size) 1203 if (size)
457 return realloc (ptr, size); 1204 return realloc (ptr, size);
458 1205
459 free (ptr); 1206 free (ptr);
460 return 0; 1207 return 0;
461} 1208}
462 1209
463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1210static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
464 1211
465void 1212void ecb_cold
466ev_set_allocator (void *(*cb)(void *ptr, long size)) 1213ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
467{ 1214{
468 alloc = cb; 1215 alloc = cb;
469} 1216}
470 1217
471inline_speed void * 1218inline_speed void *
… …
473{ 1220{
474 ptr = alloc (ptr, size); 1221 ptr = alloc (ptr, size);
475 1222
476 if (!ptr && size) 1223 if (!ptr && size)
477 { 1224 {
1225#if EV_AVOID_STDIO
1226 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1227#else
478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1228 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1229#endif
479 abort (); 1230 abort ();
480 } 1231 }
481 1232
482 return ptr; 1233 return ptr;
483} 1234}
… …
485#define ev_malloc(size) ev_realloc (0, (size)) 1236#define ev_malloc(size) ev_realloc (0, (size))
486#define ev_free(ptr) ev_realloc ((ptr), 0) 1237#define ev_free(ptr) ev_realloc ((ptr), 0)
487 1238
488/*****************************************************************************/ 1239/*****************************************************************************/
489 1240
1241/* set in reify when reification needed */
1242#define EV_ANFD_REIFY 1
1243
490/* file descriptor info structure */ 1244/* file descriptor info structure */
491typedef struct 1245typedef struct
492{ 1246{
493 WL head; 1247 WL head;
494 unsigned char events; /* the events watched for */ 1248 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */ 1249 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
496 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1250 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
497 unsigned char unused; 1251 unsigned char unused;
498#if EV_USE_EPOLL 1252#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */ 1253 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif 1254#endif
501#if EV_SELECT_IS_WINSOCKET 1255#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
502 SOCKET handle; 1256 SOCKET handle;
1257#endif
1258#if EV_USE_IOCP
1259 OVERLAPPED or, ow;
503#endif 1260#endif
504} ANFD; 1261} ANFD;
505 1262
506/* stores the pending event set for a given watcher */ 1263/* stores the pending event set for a given watcher */
507typedef struct 1264typedef struct
… …
549 #undef VAR 1306 #undef VAR
550 }; 1307 };
551 #include "ev_wrap.h" 1308 #include "ev_wrap.h"
552 1309
553 static struct ev_loop default_loop_struct; 1310 static struct ev_loop default_loop_struct;
554 struct ev_loop *ev_default_loop_ptr; 1311 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
555 1312
556#else 1313#else
557 1314
558 ev_tstamp ev_rt_now; 1315 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
559 #define VAR(name,decl) static decl; 1316 #define VAR(name,decl) static decl;
560 #include "ev_vars.h" 1317 #include "ev_vars.h"
561 #undef VAR 1318 #undef VAR
562 1319
563 static int ev_default_loop_ptr; 1320 static int ev_default_loop_ptr;
564 1321
565#endif 1322#endif
566 1323
1324#if EV_FEATURE_API
1325# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1326# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1327# define EV_INVOKE_PENDING invoke_cb (EV_A)
1328#else
1329# define EV_RELEASE_CB (void)0
1330# define EV_ACQUIRE_CB (void)0
1331# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1332#endif
1333
1334#define EVBREAK_RECURSE 0x80
1335
567/*****************************************************************************/ 1336/*****************************************************************************/
568 1337
569#ifndef EV_HAVE_EV_TIME 1338#ifndef EV_HAVE_EV_TIME
570ev_tstamp 1339ev_tstamp
571ev_time (void) 1340ev_time (void) EV_THROW
572{ 1341{
573#if EV_USE_REALTIME 1342#if EV_USE_REALTIME
574 if (expect_true (have_realtime)) 1343 if (expect_true (have_realtime))
575 { 1344 {
576 struct timespec ts; 1345 struct timespec ts;
… …
600 return ev_time (); 1369 return ev_time ();
601} 1370}
602 1371
603#if EV_MULTIPLICITY 1372#if EV_MULTIPLICITY
604ev_tstamp 1373ev_tstamp
605ev_now (EV_P) 1374ev_now (EV_P) EV_THROW
606{ 1375{
607 return ev_rt_now; 1376 return ev_rt_now;
608} 1377}
609#endif 1378#endif
610 1379
611void 1380void
612ev_sleep (ev_tstamp delay) 1381ev_sleep (ev_tstamp delay) EV_THROW
613{ 1382{
614 if (delay > 0.) 1383 if (delay > 0.)
615 { 1384 {
616#if EV_USE_NANOSLEEP 1385#if EV_USE_NANOSLEEP
617 struct timespec ts; 1386 struct timespec ts;
618 1387
619 ts.tv_sec = (time_t)delay; 1388 EV_TS_SET (ts, delay);
620 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
621
622 nanosleep (&ts, 0); 1389 nanosleep (&ts, 0);
623#elif defined(_WIN32) 1390#elif defined _WIN32
624 Sleep ((unsigned long)(delay * 1e3)); 1391 Sleep ((unsigned long)(delay * 1e3));
625#else 1392#else
626 struct timeval tv; 1393 struct timeval tv;
627 1394
628 tv.tv_sec = (time_t)delay;
629 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
630
631 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1395 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
632 /* somehting not guaranteed by newer posix versions, but guaranteed */ 1396 /* something not guaranteed by newer posix versions, but guaranteed */
633 /* by older ones */ 1397 /* by older ones */
1398 EV_TV_SET (tv, delay);
634 select (0, 0, 0, 0, &tv); 1399 select (0, 0, 0, 0, &tv);
635#endif 1400#endif
636 } 1401 }
637} 1402}
638 1403
639/*****************************************************************************/ 1404/*****************************************************************************/
640 1405
641#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1406#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
642 1407
643/* find a suitable new size for the given array, */ 1408/* find a suitable new size for the given array, */
644/* hopefully by rounding to a ncie-to-malloc size */ 1409/* hopefully by rounding to a nice-to-malloc size */
645inline_size int 1410inline_size int
646array_nextsize (int elem, int cur, int cnt) 1411array_nextsize (int elem, int cur, int cnt)
647{ 1412{
648 int ncur = cur + 1; 1413 int ncur = cur + 1;
649 1414
650 do 1415 do
651 ncur <<= 1; 1416 ncur <<= 1;
652 while (cnt > ncur); 1417 while (cnt > ncur);
653 1418
654 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1419 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
655 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1420 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
656 { 1421 {
657 ncur *= elem; 1422 ncur *= elem;
658 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1423 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
659 ncur = ncur - sizeof (void *) * 4; 1424 ncur = ncur - sizeof (void *) * 4;
… …
661 } 1426 }
662 1427
663 return ncur; 1428 return ncur;
664} 1429}
665 1430
666static noinline void * 1431static void * noinline ecb_cold
667array_realloc (int elem, void *base, int *cur, int cnt) 1432array_realloc (int elem, void *base, int *cur, int cnt)
668{ 1433{
669 *cur = array_nextsize (elem, *cur, cnt); 1434 *cur = array_nextsize (elem, *cur, cnt);
670 return ev_realloc (base, elem * *cur); 1435 return ev_realloc (base, elem * *cur);
671} 1436}
… …
674 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1439 memset ((void *)(base), 0, sizeof (*(base)) * (count))
675 1440
676#define array_needsize(type,base,cur,cnt,init) \ 1441#define array_needsize(type,base,cur,cnt,init) \
677 if (expect_false ((cnt) > (cur))) \ 1442 if (expect_false ((cnt) > (cur))) \
678 { \ 1443 { \
679 int ocur_ = (cur); \ 1444 int ecb_unused ocur_ = (cur); \
680 (base) = (type *)array_realloc \ 1445 (base) = (type *)array_realloc \
681 (sizeof (type), (base), &(cur), (cnt)); \ 1446 (sizeof (type), (base), &(cur), (cnt)); \
682 init ((base) + (ocur_), (cur) - ocur_); \ 1447 init ((base) + (ocur_), (cur) - ocur_); \
683 } 1448 }
684 1449
… …
702pendingcb (EV_P_ ev_prepare *w, int revents) 1467pendingcb (EV_P_ ev_prepare *w, int revents)
703{ 1468{
704} 1469}
705 1470
706void noinline 1471void noinline
707ev_feed_event (EV_P_ void *w, int revents) 1472ev_feed_event (EV_P_ void *w, int revents) EV_THROW
708{ 1473{
709 W w_ = (W)w; 1474 W w_ = (W)w;
710 int pri = ABSPRI (w_); 1475 int pri = ABSPRI (w_);
711 1476
712 if (expect_false (w_->pending)) 1477 if (expect_false (w_->pending))
… …
716 w_->pending = ++pendingcnt [pri]; 1481 w_->pending = ++pendingcnt [pri];
717 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1482 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
718 pendings [pri][w_->pending - 1].w = w_; 1483 pendings [pri][w_->pending - 1].w = w_;
719 pendings [pri][w_->pending - 1].events = revents; 1484 pendings [pri][w_->pending - 1].events = revents;
720 } 1485 }
1486
1487 pendingpri = NUMPRI - 1;
721} 1488}
722 1489
723inline_speed void 1490inline_speed void
724feed_reverse (EV_P_ W w) 1491feed_reverse (EV_P_ W w)
725{ 1492{
… …
745} 1512}
746 1513
747/*****************************************************************************/ 1514/*****************************************************************************/
748 1515
749inline_speed void 1516inline_speed void
750fd_event (EV_P_ int fd, int revents) 1517fd_event_nocheck (EV_P_ int fd, int revents)
751{ 1518{
752 ANFD *anfd = anfds + fd; 1519 ANFD *anfd = anfds + fd;
753 ev_io *w; 1520 ev_io *w;
754 1521
755 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1522 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
759 if (ev) 1526 if (ev)
760 ev_feed_event (EV_A_ (W)w, ev); 1527 ev_feed_event (EV_A_ (W)w, ev);
761 } 1528 }
762} 1529}
763 1530
1531/* do not submit kernel events for fds that have reify set */
1532/* because that means they changed while we were polling for new events */
1533inline_speed void
1534fd_event (EV_P_ int fd, int revents)
1535{
1536 ANFD *anfd = anfds + fd;
1537
1538 if (expect_true (!anfd->reify))
1539 fd_event_nocheck (EV_A_ fd, revents);
1540}
1541
764void 1542void
765ev_feed_fd_event (EV_P_ int fd, int revents) 1543ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
766{ 1544{
767 if (fd >= 0 && fd < anfdmax) 1545 if (fd >= 0 && fd < anfdmax)
768 fd_event (EV_A_ fd, revents); 1546 fd_event_nocheck (EV_A_ fd, revents);
769} 1547}
770 1548
771/* make sure the external fd watch events are in-sync */ 1549/* make sure the external fd watch events are in-sync */
772/* with the kernel/libev internal state */ 1550/* with the kernel/libev internal state */
773inline_size void 1551inline_size void
774fd_reify (EV_P) 1552fd_reify (EV_P)
775{ 1553{
776 int i; 1554 int i;
777 1555
1556#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1557 for (i = 0; i < fdchangecnt; ++i)
1558 {
1559 int fd = fdchanges [i];
1560 ANFD *anfd = anfds + fd;
1561
1562 if (anfd->reify & EV__IOFDSET && anfd->head)
1563 {
1564 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1565
1566 if (handle != anfd->handle)
1567 {
1568 unsigned long arg;
1569
1570 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1571
1572 /* handle changed, but fd didn't - we need to do it in two steps */
1573 backend_modify (EV_A_ fd, anfd->events, 0);
1574 anfd->events = 0;
1575 anfd->handle = handle;
1576 }
1577 }
1578 }
1579#endif
1580
778 for (i = 0; i < fdchangecnt; ++i) 1581 for (i = 0; i < fdchangecnt; ++i)
779 { 1582 {
780 int fd = fdchanges [i]; 1583 int fd = fdchanges [i];
781 ANFD *anfd = anfds + fd; 1584 ANFD *anfd = anfds + fd;
782 ev_io *w; 1585 ev_io *w;
783 1586
784 unsigned char events = 0; 1587 unsigned char o_events = anfd->events;
1588 unsigned char o_reify = anfd->reify;
785 1589
786 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1590 anfd->reify = 0;
787 events |= (unsigned char)w->events;
788 1591
789#if EV_SELECT_IS_WINSOCKET 1592 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
790 if (events)
791 { 1593 {
792 unsigned long arg; 1594 anfd->events = 0;
793 #ifdef EV_FD_TO_WIN32_HANDLE 1595
794 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1596 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
795 #else 1597 anfd->events |= (unsigned char)w->events;
796 anfd->handle = _get_osfhandle (fd); 1598
797 #endif 1599 if (o_events != anfd->events)
798 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1600 o_reify = EV__IOFDSET; /* actually |= */
799 } 1601 }
800#endif
801 1602
802 { 1603 if (o_reify & EV__IOFDSET)
803 unsigned char o_events = anfd->events;
804 unsigned char o_reify = anfd->reify;
805
806 anfd->reify = 0;
807 anfd->events = events;
808
809 if (o_events != events || o_reify & EV__IOFDSET)
810 backend_modify (EV_A_ fd, o_events, events); 1604 backend_modify (EV_A_ fd, o_events, anfd->events);
811 }
812 } 1605 }
813 1606
814 fdchangecnt = 0; 1607 fdchangecnt = 0;
815} 1608}
816 1609
… …
828 fdchanges [fdchangecnt - 1] = fd; 1621 fdchanges [fdchangecnt - 1] = fd;
829 } 1622 }
830} 1623}
831 1624
832/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1625/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
833inline_speed void 1626inline_speed void ecb_cold
834fd_kill (EV_P_ int fd) 1627fd_kill (EV_P_ int fd)
835{ 1628{
836 ev_io *w; 1629 ev_io *w;
837 1630
838 while ((w = (ev_io *)anfds [fd].head)) 1631 while ((w = (ev_io *)anfds [fd].head))
… …
840 ev_io_stop (EV_A_ w); 1633 ev_io_stop (EV_A_ w);
841 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1634 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
842 } 1635 }
843} 1636}
844 1637
845/* check whether the given fd is atcually valid, for error recovery */ 1638/* check whether the given fd is actually valid, for error recovery */
846inline_size int 1639inline_size int ecb_cold
847fd_valid (int fd) 1640fd_valid (int fd)
848{ 1641{
849#ifdef _WIN32 1642#ifdef _WIN32
850 return _get_osfhandle (fd) != -1; 1643 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
851#else 1644#else
852 return fcntl (fd, F_GETFD) != -1; 1645 return fcntl (fd, F_GETFD) != -1;
853#endif 1646#endif
854} 1647}
855 1648
856/* called on EBADF to verify fds */ 1649/* called on EBADF to verify fds */
857static void noinline 1650static void noinline ecb_cold
858fd_ebadf (EV_P) 1651fd_ebadf (EV_P)
859{ 1652{
860 int fd; 1653 int fd;
861 1654
862 for (fd = 0; fd < anfdmax; ++fd) 1655 for (fd = 0; fd < anfdmax; ++fd)
… …
864 if (!fd_valid (fd) && errno == EBADF) 1657 if (!fd_valid (fd) && errno == EBADF)
865 fd_kill (EV_A_ fd); 1658 fd_kill (EV_A_ fd);
866} 1659}
867 1660
868/* called on ENOMEM in select/poll to kill some fds and retry */ 1661/* called on ENOMEM in select/poll to kill some fds and retry */
869static void noinline 1662static void noinline ecb_cold
870fd_enomem (EV_P) 1663fd_enomem (EV_P)
871{ 1664{
872 int fd; 1665 int fd;
873 1666
874 for (fd = anfdmax; fd--; ) 1667 for (fd = anfdmax; fd--; )
875 if (anfds [fd].events) 1668 if (anfds [fd].events)
876 { 1669 {
877 fd_kill (EV_A_ fd); 1670 fd_kill (EV_A_ fd);
878 return; 1671 break;
879 } 1672 }
880} 1673}
881 1674
882/* usually called after fork if backend needs to re-arm all fds from scratch */ 1675/* usually called after fork if backend needs to re-arm all fds from scratch */
883static void noinline 1676static void noinline
… …
888 for (fd = 0; fd < anfdmax; ++fd) 1681 for (fd = 0; fd < anfdmax; ++fd)
889 if (anfds [fd].events) 1682 if (anfds [fd].events)
890 { 1683 {
891 anfds [fd].events = 0; 1684 anfds [fd].events = 0;
892 anfds [fd].emask = 0; 1685 anfds [fd].emask = 0;
893 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1686 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
894 } 1687 }
895} 1688}
896 1689
1690/* used to prepare libev internal fd's */
1691/* this is not fork-safe */
1692inline_speed void
1693fd_intern (int fd)
1694{
1695#ifdef _WIN32
1696 unsigned long arg = 1;
1697 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1698#else
1699 fcntl (fd, F_SETFD, FD_CLOEXEC);
1700 fcntl (fd, F_SETFL, O_NONBLOCK);
1701#endif
1702}
1703
897/*****************************************************************************/ 1704/*****************************************************************************/
898 1705
899/* 1706/*
900 * the heap functions want a real array index. array index 0 uis guaranteed to not 1707 * the heap functions want a real array index. array index 0 is guaranteed to not
901 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1708 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
902 * the branching factor of the d-tree. 1709 * the branching factor of the d-tree.
903 */ 1710 */
904 1711
905/* 1712/*
… …
973 1780
974 for (;;) 1781 for (;;)
975 { 1782 {
976 int c = k << 1; 1783 int c = k << 1;
977 1784
978 if (c > N + HEAP0 - 1) 1785 if (c >= N + HEAP0)
979 break; 1786 break;
980 1787
981 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1788 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
982 ? 1 : 0; 1789 ? 1 : 0;
983 1790
… …
1019 1826
1020/* move an element suitably so it is in a correct place */ 1827/* move an element suitably so it is in a correct place */
1021inline_size void 1828inline_size void
1022adjustheap (ANHE *heap, int N, int k) 1829adjustheap (ANHE *heap, int N, int k)
1023{ 1830{
1024 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1831 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1025 upheap (heap, k); 1832 upheap (heap, k);
1026 else 1833 else
1027 downheap (heap, N, k); 1834 downheap (heap, N, k);
1028} 1835}
1029 1836
… …
1042/*****************************************************************************/ 1849/*****************************************************************************/
1043 1850
1044/* associate signal watchers to a signal signal */ 1851/* associate signal watchers to a signal signal */
1045typedef struct 1852typedef struct
1046{ 1853{
1854 EV_ATOMIC_T pending;
1855#if EV_MULTIPLICITY
1856 EV_P;
1857#endif
1047 WL head; 1858 WL head;
1048 EV_ATOMIC_T gotsig;
1049} ANSIG; 1859} ANSIG;
1050 1860
1051static ANSIG *signals; 1861static ANSIG signals [EV_NSIG - 1];
1052static int signalmax;
1053
1054static EV_ATOMIC_T gotsig;
1055 1862
1056/*****************************************************************************/ 1863/*****************************************************************************/
1057 1864
1058/* used to prepare libev internal fd's */ 1865#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1059/* this is not fork-safe */
1060inline_speed void
1061fd_intern (int fd)
1062{
1063#ifdef _WIN32
1064 unsigned long arg = 1;
1065 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1066#else
1067 fcntl (fd, F_SETFD, FD_CLOEXEC);
1068 fcntl (fd, F_SETFL, O_NONBLOCK);
1069#endif
1070}
1071 1866
1072static void noinline 1867static void noinline ecb_cold
1073evpipe_init (EV_P) 1868evpipe_init (EV_P)
1074{ 1869{
1075 if (!ev_is_active (&pipe_w)) 1870 if (!ev_is_active (&pipe_w))
1076 { 1871 {
1077#if EV_USE_EVENTFD 1872# if EV_USE_EVENTFD
1873 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1874 if (evfd < 0 && errno == EINVAL)
1078 if ((evfd = eventfd (0, 0)) >= 0) 1875 evfd = eventfd (0, 0);
1876
1877 if (evfd >= 0)
1079 { 1878 {
1080 evpipe [0] = -1; 1879 evpipe [0] = -1;
1081 fd_intern (evfd); 1880 fd_intern (evfd); /* doing it twice doesn't hurt */
1082 ev_io_set (&pipe_w, evfd, EV_READ); 1881 ev_io_set (&pipe_w, evfd, EV_READ);
1083 } 1882 }
1084 else 1883 else
1085#endif 1884# endif
1086 { 1885 {
1087 while (pipe (evpipe)) 1886 while (pipe (evpipe))
1088 ev_syserr ("(libev) error creating signal/async pipe"); 1887 ev_syserr ("(libev) error creating signal/async pipe");
1089 1888
1090 fd_intern (evpipe [0]); 1889 fd_intern (evpipe [0]);
… …
1095 ev_io_start (EV_A_ &pipe_w); 1894 ev_io_start (EV_A_ &pipe_w);
1096 ev_unref (EV_A); /* watcher should not keep loop alive */ 1895 ev_unref (EV_A); /* watcher should not keep loop alive */
1097 } 1896 }
1098} 1897}
1099 1898
1100inline_size void 1899inline_speed void
1101evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1900evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1102{ 1901{
1103 if (!*flag) 1902 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1903
1904 if (expect_true (*flag))
1905 return;
1906
1907 *flag = 1;
1908 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1909
1910 pipe_write_skipped = 1;
1911
1912 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1913
1914 if (pipe_write_wanted)
1104 { 1915 {
1916 int old_errno;
1917
1918 pipe_write_skipped = 0;
1919 ECB_MEMORY_FENCE_RELEASE;
1920
1105 int old_errno = errno; /* save errno because write might clobber it */ 1921 old_errno = errno; /* save errno because write will clobber it */
1106
1107 *flag = 1;
1108 1922
1109#if EV_USE_EVENTFD 1923#if EV_USE_EVENTFD
1110 if (evfd >= 0) 1924 if (evfd >= 0)
1111 { 1925 {
1112 uint64_t counter = 1; 1926 uint64_t counter = 1;
1113 write (evfd, &counter, sizeof (uint64_t)); 1927 write (evfd, &counter, sizeof (uint64_t));
1114 } 1928 }
1115 else 1929 else
1116#endif 1930#endif
1931 {
1932#ifdef _WIN32
1933 WSABUF buf;
1934 DWORD sent;
1935 buf.buf = &buf;
1936 buf.len = 1;
1937 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1938#else
1117 write (evpipe [1], &old_errno, 1); 1939 write (evpipe [1], &(evpipe [1]), 1);
1940#endif
1941 }
1118 1942
1119 errno = old_errno; 1943 errno = old_errno;
1120 } 1944 }
1121} 1945}
1122 1946
1123/* called whenever the libev signal pipe */ 1947/* called whenever the libev signal pipe */
1124/* got some events (signal, async) */ 1948/* got some events (signal, async) */
1125static void 1949static void
1126pipecb (EV_P_ ev_io *iow, int revents) 1950pipecb (EV_P_ ev_io *iow, int revents)
1127{ 1951{
1952 int i;
1953
1954 if (revents & EV_READ)
1955 {
1128#if EV_USE_EVENTFD 1956#if EV_USE_EVENTFD
1129 if (evfd >= 0) 1957 if (evfd >= 0)
1130 { 1958 {
1131 uint64_t counter; 1959 uint64_t counter;
1132 read (evfd, &counter, sizeof (uint64_t)); 1960 read (evfd, &counter, sizeof (uint64_t));
1133 } 1961 }
1134 else 1962 else
1135#endif 1963#endif
1136 { 1964 {
1137 char dummy; 1965 char dummy[4];
1966#ifdef _WIN32
1967 WSABUF buf;
1968 DWORD recvd;
1969 DWORD flags = 0;
1970 buf.buf = dummy;
1971 buf.len = sizeof (dummy);
1972 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1973#else
1138 read (evpipe [0], &dummy, 1); 1974 read (evpipe [0], &dummy, sizeof (dummy));
1975#endif
1976 }
1977 }
1978
1979 pipe_write_skipped = 0;
1980
1981 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1982
1983#if EV_SIGNAL_ENABLE
1984 if (sig_pending)
1139 } 1985 {
1986 sig_pending = 0;
1140 1987
1141 if (gotsig && ev_is_default_loop (EV_A)) 1988 ECB_MEMORY_FENCE;
1142 {
1143 int signum;
1144 gotsig = 0;
1145 1989
1146 for (signum = signalmax; signum--; ) 1990 for (i = EV_NSIG - 1; i--; )
1147 if (signals [signum].gotsig) 1991 if (expect_false (signals [i].pending))
1148 ev_feed_signal_event (EV_A_ signum + 1); 1992 ev_feed_signal_event (EV_A_ i + 1);
1149 } 1993 }
1994#endif
1150 1995
1151#if EV_ASYNC_ENABLE 1996#if EV_ASYNC_ENABLE
1152 if (gotasync) 1997 if (async_pending)
1153 { 1998 {
1154 int i; 1999 async_pending = 0;
1155 gotasync = 0; 2000
2001 ECB_MEMORY_FENCE;
1156 2002
1157 for (i = asynccnt; i--; ) 2003 for (i = asynccnt; i--; )
1158 if (asyncs [i]->sent) 2004 if (asyncs [i]->sent)
1159 { 2005 {
1160 asyncs [i]->sent = 0; 2006 asyncs [i]->sent = 0;
2007 ECB_MEMORY_FENCE_RELEASE;
1161 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2008 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1162 } 2009 }
1163 } 2010 }
1164#endif 2011#endif
1165} 2012}
1166 2013
1167/*****************************************************************************/ 2014/*****************************************************************************/
1168 2015
2016void
2017ev_feed_signal (int signum) EV_THROW
2018{
2019#if EV_MULTIPLICITY
2020 EV_P = signals [signum - 1].loop;
2021
2022 if (!EV_A)
2023 return;
2024#endif
2025
2026 if (!ev_active (&pipe_w))
2027 return;
2028
2029 signals [signum - 1].pending = 1;
2030 evpipe_write (EV_A_ &sig_pending);
2031}
2032
1169static void 2033static void
1170ev_sighandler (int signum) 2034ev_sighandler (int signum)
1171{ 2035{
2036#ifdef _WIN32
2037 signal (signum, ev_sighandler);
2038#endif
2039
2040 ev_feed_signal (signum);
2041}
2042
2043void noinline
2044ev_feed_signal_event (EV_P_ int signum) EV_THROW
2045{
2046 WL w;
2047
2048 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2049 return;
2050
2051 --signum;
2052
1172#if EV_MULTIPLICITY 2053#if EV_MULTIPLICITY
1173 struct ev_loop *loop = &default_loop_struct; 2054 /* it is permissible to try to feed a signal to the wrong loop */
1174#endif 2055 /* or, likely more useful, feeding a signal nobody is waiting for */
1175 2056
1176#if _WIN32 2057 if (expect_false (signals [signum].loop != EV_A))
1177 signal (signum, ev_sighandler);
1178#endif
1179
1180 signals [signum - 1].gotsig = 1;
1181 evpipe_write (EV_A_ &gotsig);
1182}
1183
1184void noinline
1185ev_feed_signal_event (EV_P_ int signum)
1186{
1187 WL w;
1188
1189#if EV_MULTIPLICITY
1190 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1191#endif
1192
1193 --signum;
1194
1195 if (signum < 0 || signum >= signalmax)
1196 return; 2058 return;
2059#endif
1197 2060
1198 signals [signum].gotsig = 0; 2061 signals [signum].pending = 0;
2062 ECB_MEMORY_FENCE_RELEASE;
1199 2063
1200 for (w = signals [signum].head; w; w = w->next) 2064 for (w = signals [signum].head; w; w = w->next)
1201 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2065 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1202} 2066}
1203 2067
2068#if EV_USE_SIGNALFD
2069static void
2070sigfdcb (EV_P_ ev_io *iow, int revents)
2071{
2072 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2073
2074 for (;;)
2075 {
2076 ssize_t res = read (sigfd, si, sizeof (si));
2077
2078 /* not ISO-C, as res might be -1, but works with SuS */
2079 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2080 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2081
2082 if (res < (ssize_t)sizeof (si))
2083 break;
2084 }
2085}
2086#endif
2087
2088#endif
2089
1204/*****************************************************************************/ 2090/*****************************************************************************/
1205 2091
2092#if EV_CHILD_ENABLE
1206static WL childs [EV_PID_HASHSIZE]; 2093static WL childs [EV_PID_HASHSIZE];
1207
1208#ifndef _WIN32
1209 2094
1210static ev_signal childev; 2095static ev_signal childev;
1211 2096
1212#ifndef WIFCONTINUED 2097#ifndef WIFCONTINUED
1213# define WIFCONTINUED(status) 0 2098# define WIFCONTINUED(status) 0
… …
1218child_reap (EV_P_ int chain, int pid, int status) 2103child_reap (EV_P_ int chain, int pid, int status)
1219{ 2104{
1220 ev_child *w; 2105 ev_child *w;
1221 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2106 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1222 2107
1223 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2108 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1224 { 2109 {
1225 if ((w->pid == pid || !w->pid) 2110 if ((w->pid == pid || !w->pid)
1226 && (!traced || (w->flags & 1))) 2111 && (!traced || (w->flags & 1)))
1227 { 2112 {
1228 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2113 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1253 /* make sure we are called again until all children have been reaped */ 2138 /* make sure we are called again until all children have been reaped */
1254 /* we need to do it this way so that the callback gets called before we continue */ 2139 /* we need to do it this way so that the callback gets called before we continue */
1255 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2140 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1256 2141
1257 child_reap (EV_A_ pid, pid, status); 2142 child_reap (EV_A_ pid, pid, status);
1258 if (EV_PID_HASHSIZE > 1) 2143 if ((EV_PID_HASHSIZE) > 1)
1259 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2144 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1260} 2145}
1261 2146
1262#endif 2147#endif
1263 2148
1264/*****************************************************************************/ 2149/*****************************************************************************/
1265 2150
2151#if EV_USE_IOCP
2152# include "ev_iocp.c"
2153#endif
1266#if EV_USE_PORT 2154#if EV_USE_PORT
1267# include "ev_port.c" 2155# include "ev_port.c"
1268#endif 2156#endif
1269#if EV_USE_KQUEUE 2157#if EV_USE_KQUEUE
1270# include "ev_kqueue.c" 2158# include "ev_kqueue.c"
… …
1277#endif 2165#endif
1278#if EV_USE_SELECT 2166#if EV_USE_SELECT
1279# include "ev_select.c" 2167# include "ev_select.c"
1280#endif 2168#endif
1281 2169
1282int 2170int ecb_cold
1283ev_version_major (void) 2171ev_version_major (void) EV_THROW
1284{ 2172{
1285 return EV_VERSION_MAJOR; 2173 return EV_VERSION_MAJOR;
1286} 2174}
1287 2175
1288int 2176int ecb_cold
1289ev_version_minor (void) 2177ev_version_minor (void) EV_THROW
1290{ 2178{
1291 return EV_VERSION_MINOR; 2179 return EV_VERSION_MINOR;
1292} 2180}
1293 2181
1294/* return true if we are running with elevated privileges and should ignore env variables */ 2182/* return true if we are running with elevated privileges and should ignore env variables */
1295int inline_size 2183int inline_size ecb_cold
1296enable_secure (void) 2184enable_secure (void)
1297{ 2185{
1298#ifdef _WIN32 2186#ifdef _WIN32
1299 return 0; 2187 return 0;
1300#else 2188#else
1301 return getuid () != geteuid () 2189 return getuid () != geteuid ()
1302 || getgid () != getegid (); 2190 || getgid () != getegid ();
1303#endif 2191#endif
1304} 2192}
1305 2193
1306unsigned int 2194unsigned int ecb_cold
1307ev_supported_backends (void) 2195ev_supported_backends (void) EV_THROW
1308{ 2196{
1309 unsigned int flags = 0; 2197 unsigned int flags = 0;
1310 2198
1311 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2199 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1312 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2200 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1315 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2203 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1316 2204
1317 return flags; 2205 return flags;
1318} 2206}
1319 2207
1320unsigned int 2208unsigned int ecb_cold
1321ev_recommended_backends (void) 2209ev_recommended_backends (void) EV_THROW
1322{ 2210{
1323 unsigned int flags = ev_supported_backends (); 2211 unsigned int flags = ev_supported_backends ();
1324 2212
1325#ifndef __NetBSD__ 2213#ifndef __NetBSD__
1326 /* kqueue is borked on everything but netbsd apparently */ 2214 /* kqueue is borked on everything but netbsd apparently */
… …
1330#ifdef __APPLE__ 2218#ifdef __APPLE__
1331 /* only select works correctly on that "unix-certified" platform */ 2219 /* only select works correctly on that "unix-certified" platform */
1332 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2220 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1333 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2221 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1334#endif 2222#endif
2223#ifdef __FreeBSD__
2224 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2225#endif
1335 2226
1336 return flags; 2227 return flags;
1337} 2228}
1338 2229
2230unsigned int ecb_cold
2231ev_embeddable_backends (void) EV_THROW
2232{
2233 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2234
2235 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2236 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2237 flags &= ~EVBACKEND_EPOLL;
2238
2239 return flags;
2240}
2241
1339unsigned int 2242unsigned int
1340ev_embeddable_backends (void) 2243ev_backend (EV_P) EV_THROW
1341{ 2244{
1342 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2245 return backend;
1343
1344 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1345 /* please fix it and tell me how to detect the fix */
1346 flags &= ~EVBACKEND_EPOLL;
1347
1348 return flags;
1349} 2246}
1350 2247
2248#if EV_FEATURE_API
1351unsigned int 2249unsigned int
1352ev_backend (EV_P) 2250ev_iteration (EV_P) EV_THROW
1353{ 2251{
1354 return backend; 2252 return loop_count;
1355} 2253}
1356 2254
1357unsigned int 2255unsigned int
1358ev_loop_count (EV_P) 2256ev_depth (EV_P) EV_THROW
1359{
1360 return loop_count;
1361}
1362
1363unsigned int
1364ev_loop_depth (EV_P)
1365{ 2257{
1366 return loop_depth; 2258 return loop_depth;
1367} 2259}
1368 2260
1369void 2261void
1370ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2262ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1371{ 2263{
1372 io_blocktime = interval; 2264 io_blocktime = interval;
1373} 2265}
1374 2266
1375void 2267void
1376ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2268ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1377{ 2269{
1378 timeout_blocktime = interval; 2270 timeout_blocktime = interval;
1379} 2271}
1380 2272
2273void
2274ev_set_userdata (EV_P_ void *data) EV_THROW
2275{
2276 userdata = data;
2277}
2278
2279void *
2280ev_userdata (EV_P) EV_THROW
2281{
2282 return userdata;
2283}
2284
2285void
2286ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2287{
2288 invoke_cb = invoke_pending_cb;
2289}
2290
2291void
2292ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2293{
2294 release_cb = release;
2295 acquire_cb = acquire;
2296}
2297#endif
2298
1381/* initialise a loop structure, must be zero-initialised */ 2299/* initialise a loop structure, must be zero-initialised */
1382static void noinline 2300static void noinline ecb_cold
1383loop_init (EV_P_ unsigned int flags) 2301loop_init (EV_P_ unsigned int flags) EV_THROW
1384{ 2302{
1385 if (!backend) 2303 if (!backend)
1386 { 2304 {
2305 origflags = flags;
2306
1387#if EV_USE_REALTIME 2307#if EV_USE_REALTIME
1388 if (!have_realtime) 2308 if (!have_realtime)
1389 { 2309 {
1390 struct timespec ts; 2310 struct timespec ts;
1391 2311
… …
1402 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2322 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1403 have_monotonic = 1; 2323 have_monotonic = 1;
1404 } 2324 }
1405#endif 2325#endif
1406 2326
1407 ev_rt_now = ev_time ();
1408 mn_now = get_clock ();
1409 now_floor = mn_now;
1410 rtmn_diff = ev_rt_now - mn_now;
1411
1412 io_blocktime = 0.;
1413 timeout_blocktime = 0.;
1414 backend = 0;
1415 backend_fd = -1;
1416 gotasync = 0;
1417#if EV_USE_INOTIFY
1418 fs_fd = -2;
1419#endif
1420
1421 /* pid check not overridable via env */ 2327 /* pid check not overridable via env */
1422#ifndef _WIN32 2328#ifndef _WIN32
1423 if (flags & EVFLAG_FORKCHECK) 2329 if (flags & EVFLAG_FORKCHECK)
1424 curpid = getpid (); 2330 curpid = getpid ();
1425#endif 2331#endif
… …
1427 if (!(flags & EVFLAG_NOENV) 2333 if (!(flags & EVFLAG_NOENV)
1428 && !enable_secure () 2334 && !enable_secure ()
1429 && getenv ("LIBEV_FLAGS")) 2335 && getenv ("LIBEV_FLAGS"))
1430 flags = atoi (getenv ("LIBEV_FLAGS")); 2336 flags = atoi (getenv ("LIBEV_FLAGS"));
1431 2337
1432 if (!(flags & 0x0000ffffU)) 2338 ev_rt_now = ev_time ();
2339 mn_now = get_clock ();
2340 now_floor = mn_now;
2341 rtmn_diff = ev_rt_now - mn_now;
2342#if EV_FEATURE_API
2343 invoke_cb = ev_invoke_pending;
2344#endif
2345
2346 io_blocktime = 0.;
2347 timeout_blocktime = 0.;
2348 backend = 0;
2349 backend_fd = -1;
2350 sig_pending = 0;
2351#if EV_ASYNC_ENABLE
2352 async_pending = 0;
2353#endif
2354 pipe_write_skipped = 0;
2355 pipe_write_wanted = 0;
2356#if EV_USE_INOTIFY
2357 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2358#endif
2359#if EV_USE_SIGNALFD
2360 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2361#endif
2362
2363 if (!(flags & EVBACKEND_MASK))
1433 flags |= ev_recommended_backends (); 2364 flags |= ev_recommended_backends ();
1434 2365
2366#if EV_USE_IOCP
2367 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2368#endif
1435#if EV_USE_PORT 2369#if EV_USE_PORT
1436 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2370 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1437#endif 2371#endif
1438#if EV_USE_KQUEUE 2372#if EV_USE_KQUEUE
1439 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2373 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1448 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2382 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1449#endif 2383#endif
1450 2384
1451 ev_prepare_init (&pending_w, pendingcb); 2385 ev_prepare_init (&pending_w, pendingcb);
1452 2386
2387#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1453 ev_init (&pipe_w, pipecb); 2388 ev_init (&pipe_w, pipecb);
1454 ev_set_priority (&pipe_w, EV_MAXPRI); 2389 ev_set_priority (&pipe_w, EV_MAXPRI);
2390#endif
1455 } 2391 }
1456} 2392}
1457 2393
1458/* free up a loop structure */ 2394/* free up a loop structure */
1459static void noinline 2395void ecb_cold
1460loop_destroy (EV_P) 2396ev_loop_destroy (EV_P)
1461{ 2397{
1462 int i; 2398 int i;
1463 2399
2400#if EV_MULTIPLICITY
2401 /* mimic free (0) */
2402 if (!EV_A)
2403 return;
2404#endif
2405
2406#if EV_CLEANUP_ENABLE
2407 /* queue cleanup watchers (and execute them) */
2408 if (expect_false (cleanupcnt))
2409 {
2410 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2411 EV_INVOKE_PENDING;
2412 }
2413#endif
2414
2415#if EV_CHILD_ENABLE
2416 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2417 {
2418 ev_ref (EV_A); /* child watcher */
2419 ev_signal_stop (EV_A_ &childev);
2420 }
2421#endif
2422
1464 if (ev_is_active (&pipe_w)) 2423 if (ev_is_active (&pipe_w))
1465 { 2424 {
1466 ev_ref (EV_A); /* signal watcher */ 2425 /*ev_ref (EV_A);*/
1467 ev_io_stop (EV_A_ &pipe_w); 2426 /*ev_io_stop (EV_A_ &pipe_w);*/
1468 2427
1469#if EV_USE_EVENTFD 2428#if EV_USE_EVENTFD
1470 if (evfd >= 0) 2429 if (evfd >= 0)
1471 close (evfd); 2430 close (evfd);
1472#endif 2431#endif
1473 2432
1474 if (evpipe [0] >= 0) 2433 if (evpipe [0] >= 0)
1475 { 2434 {
1476 close (evpipe [0]); 2435 EV_WIN32_CLOSE_FD (evpipe [0]);
1477 close (evpipe [1]); 2436 EV_WIN32_CLOSE_FD (evpipe [1]);
1478 } 2437 }
1479 } 2438 }
2439
2440#if EV_USE_SIGNALFD
2441 if (ev_is_active (&sigfd_w))
2442 close (sigfd);
2443#endif
1480 2444
1481#if EV_USE_INOTIFY 2445#if EV_USE_INOTIFY
1482 if (fs_fd >= 0) 2446 if (fs_fd >= 0)
1483 close (fs_fd); 2447 close (fs_fd);
1484#endif 2448#endif
1485 2449
1486 if (backend_fd >= 0) 2450 if (backend_fd >= 0)
1487 close (backend_fd); 2451 close (backend_fd);
1488 2452
2453#if EV_USE_IOCP
2454 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2455#endif
1489#if EV_USE_PORT 2456#if EV_USE_PORT
1490 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2457 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1491#endif 2458#endif
1492#if EV_USE_KQUEUE 2459#if EV_USE_KQUEUE
1493 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2460 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1508#if EV_IDLE_ENABLE 2475#if EV_IDLE_ENABLE
1509 array_free (idle, [i]); 2476 array_free (idle, [i]);
1510#endif 2477#endif
1511 } 2478 }
1512 2479
1513 ev_free (anfds); anfdmax = 0; 2480 ev_free (anfds); anfds = 0; anfdmax = 0;
1514 2481
1515 /* have to use the microsoft-never-gets-it-right macro */ 2482 /* have to use the microsoft-never-gets-it-right macro */
1516 array_free (rfeed, EMPTY); 2483 array_free (rfeed, EMPTY);
1517 array_free (fdchange, EMPTY); 2484 array_free (fdchange, EMPTY);
1518 array_free (timer, EMPTY); 2485 array_free (timer, EMPTY);
… …
1520 array_free (periodic, EMPTY); 2487 array_free (periodic, EMPTY);
1521#endif 2488#endif
1522#if EV_FORK_ENABLE 2489#if EV_FORK_ENABLE
1523 array_free (fork, EMPTY); 2490 array_free (fork, EMPTY);
1524#endif 2491#endif
2492#if EV_CLEANUP_ENABLE
2493 array_free (cleanup, EMPTY);
2494#endif
1525 array_free (prepare, EMPTY); 2495 array_free (prepare, EMPTY);
1526 array_free (check, EMPTY); 2496 array_free (check, EMPTY);
1527#if EV_ASYNC_ENABLE 2497#if EV_ASYNC_ENABLE
1528 array_free (async, EMPTY); 2498 array_free (async, EMPTY);
1529#endif 2499#endif
1530 2500
1531 backend = 0; 2501 backend = 0;
2502
2503#if EV_MULTIPLICITY
2504 if (ev_is_default_loop (EV_A))
2505#endif
2506 ev_default_loop_ptr = 0;
2507#if EV_MULTIPLICITY
2508 else
2509 ev_free (EV_A);
2510#endif
1532} 2511}
1533 2512
1534#if EV_USE_INOTIFY 2513#if EV_USE_INOTIFY
1535inline_size void infy_fork (EV_P); 2514inline_size void infy_fork (EV_P);
1536#endif 2515#endif
… …
1551 infy_fork (EV_A); 2530 infy_fork (EV_A);
1552#endif 2531#endif
1553 2532
1554 if (ev_is_active (&pipe_w)) 2533 if (ev_is_active (&pipe_w))
1555 { 2534 {
1556 /* this "locks" the handlers against writing to the pipe */ 2535 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1557 /* while we modify the fd vars */
1558 gotsig = 1;
1559#if EV_ASYNC_ENABLE
1560 gotasync = 1;
1561#endif
1562 2536
1563 ev_ref (EV_A); 2537 ev_ref (EV_A);
1564 ev_io_stop (EV_A_ &pipe_w); 2538 ev_io_stop (EV_A_ &pipe_w);
1565 2539
1566#if EV_USE_EVENTFD 2540#if EV_USE_EVENTFD
… …
1568 close (evfd); 2542 close (evfd);
1569#endif 2543#endif
1570 2544
1571 if (evpipe [0] >= 0) 2545 if (evpipe [0] >= 0)
1572 { 2546 {
1573 close (evpipe [0]); 2547 EV_WIN32_CLOSE_FD (evpipe [0]);
1574 close (evpipe [1]); 2548 EV_WIN32_CLOSE_FD (evpipe [1]);
1575 } 2549 }
1576 2550
2551#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1577 evpipe_init (EV_A); 2552 evpipe_init (EV_A);
1578 /* now iterate over everything, in case we missed something */ 2553 /* iterate over everything, in case we missed something before */
1579 pipecb (EV_A_ &pipe_w, EV_READ); 2554 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2555#endif
1580 } 2556 }
1581 2557
1582 postfork = 0; 2558 postfork = 0;
1583} 2559}
1584 2560
1585#if EV_MULTIPLICITY 2561#if EV_MULTIPLICITY
1586 2562
1587struct ev_loop * 2563struct ev_loop * ecb_cold
1588ev_loop_new (unsigned int flags) 2564ev_loop_new (unsigned int flags) EV_THROW
1589{ 2565{
1590 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2566 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1591 2567
1592 memset (loop, 0, sizeof (struct ev_loop)); 2568 memset (EV_A, 0, sizeof (struct ev_loop));
1593
1594 loop_init (EV_A_ flags); 2569 loop_init (EV_A_ flags);
1595 2570
1596 if (ev_backend (EV_A)) 2571 if (ev_backend (EV_A))
1597 return loop; 2572 return EV_A;
1598 2573
2574 ev_free (EV_A);
1599 return 0; 2575 return 0;
1600} 2576}
1601 2577
1602void 2578#endif /* multiplicity */
1603ev_loop_destroy (EV_P)
1604{
1605 loop_destroy (EV_A);
1606 ev_free (loop);
1607}
1608
1609void
1610ev_loop_fork (EV_P)
1611{
1612 postfork = 1; /* must be in line with ev_default_fork */
1613}
1614 2579
1615#if EV_VERIFY 2580#if EV_VERIFY
1616static void noinline 2581static void noinline ecb_cold
1617verify_watcher (EV_P_ W w) 2582verify_watcher (EV_P_ W w)
1618{ 2583{
1619 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2584 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1620 2585
1621 if (w->pending) 2586 if (w->pending)
1622 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2587 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1623} 2588}
1624 2589
1625static void noinline 2590static void noinline ecb_cold
1626verify_heap (EV_P_ ANHE *heap, int N) 2591verify_heap (EV_P_ ANHE *heap, int N)
1627{ 2592{
1628 int i; 2593 int i;
1629 2594
1630 for (i = HEAP0; i < N + HEAP0; ++i) 2595 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1635 2600
1636 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2601 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1637 } 2602 }
1638} 2603}
1639 2604
1640static void noinline 2605static void noinline ecb_cold
1641array_verify (EV_P_ W *ws, int cnt) 2606array_verify (EV_P_ W *ws, int cnt)
1642{ 2607{
1643 while (cnt--) 2608 while (cnt--)
1644 { 2609 {
1645 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2610 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1646 verify_watcher (EV_A_ ws [cnt]); 2611 verify_watcher (EV_A_ ws [cnt]);
1647 } 2612 }
1648} 2613}
1649#endif 2614#endif
1650 2615
1651void 2616#if EV_FEATURE_API
1652ev_loop_verify (EV_P) 2617void ecb_cold
2618ev_verify (EV_P) EV_THROW
1653{ 2619{
1654#if EV_VERIFY 2620#if EV_VERIFY
1655 int i; 2621 int i;
1656 WL w; 2622 WL w, w2;
1657 2623
1658 assert (activecnt >= -1); 2624 assert (activecnt >= -1);
1659 2625
1660 assert (fdchangemax >= fdchangecnt); 2626 assert (fdchangemax >= fdchangecnt);
1661 for (i = 0; i < fdchangecnt; ++i) 2627 for (i = 0; i < fdchangecnt; ++i)
1662 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2628 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1663 2629
1664 assert (anfdmax >= 0); 2630 assert (anfdmax >= 0);
1665 for (i = 0; i < anfdmax; ++i) 2631 for (i = 0; i < anfdmax; ++i)
2632 {
2633 int j = 0;
2634
1666 for (w = anfds [i].head; w; w = w->next) 2635 for (w = w2 = anfds [i].head; w; w = w->next)
1667 { 2636 {
1668 verify_watcher (EV_A_ (W)w); 2637 verify_watcher (EV_A_ (W)w);
2638
2639 if (j++ & 1)
2640 {
2641 assert (("libev: io watcher list contains a loop", w != w2));
2642 w2 = w2->next;
2643 }
2644
1669 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2645 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1670 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2646 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1671 } 2647 }
2648 }
1672 2649
1673 assert (timermax >= timercnt); 2650 assert (timermax >= timercnt);
1674 verify_heap (EV_A_ timers, timercnt); 2651 verify_heap (EV_A_ timers, timercnt);
1675 2652
1676#if EV_PERIODIC_ENABLE 2653#if EV_PERIODIC_ENABLE
… …
1691#if EV_FORK_ENABLE 2668#if EV_FORK_ENABLE
1692 assert (forkmax >= forkcnt); 2669 assert (forkmax >= forkcnt);
1693 array_verify (EV_A_ (W *)forks, forkcnt); 2670 array_verify (EV_A_ (W *)forks, forkcnt);
1694#endif 2671#endif
1695 2672
2673#if EV_CLEANUP_ENABLE
2674 assert (cleanupmax >= cleanupcnt);
2675 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2676#endif
2677
1696#if EV_ASYNC_ENABLE 2678#if EV_ASYNC_ENABLE
1697 assert (asyncmax >= asynccnt); 2679 assert (asyncmax >= asynccnt);
1698 array_verify (EV_A_ (W *)asyncs, asynccnt); 2680 array_verify (EV_A_ (W *)asyncs, asynccnt);
1699#endif 2681#endif
1700 2682
2683#if EV_PREPARE_ENABLE
1701 assert (preparemax >= preparecnt); 2684 assert (preparemax >= preparecnt);
1702 array_verify (EV_A_ (W *)prepares, preparecnt); 2685 array_verify (EV_A_ (W *)prepares, preparecnt);
2686#endif
1703 2687
2688#if EV_CHECK_ENABLE
1704 assert (checkmax >= checkcnt); 2689 assert (checkmax >= checkcnt);
1705 array_verify (EV_A_ (W *)checks, checkcnt); 2690 array_verify (EV_A_ (W *)checks, checkcnt);
2691#endif
1706 2692
1707# if 0 2693# if 0
2694#if EV_CHILD_ENABLE
1708 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2695 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1709 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2696 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2697#endif
1710# endif 2698# endif
1711#endif 2699#endif
1712} 2700}
1713 2701#endif
1714#endif /* multiplicity */
1715 2702
1716#if EV_MULTIPLICITY 2703#if EV_MULTIPLICITY
1717struct ev_loop * 2704struct ev_loop * ecb_cold
1718ev_default_loop_init (unsigned int flags)
1719#else 2705#else
1720int 2706int
2707#endif
1721ev_default_loop (unsigned int flags) 2708ev_default_loop (unsigned int flags) EV_THROW
1722#endif
1723{ 2709{
1724 if (!ev_default_loop_ptr) 2710 if (!ev_default_loop_ptr)
1725 { 2711 {
1726#if EV_MULTIPLICITY 2712#if EV_MULTIPLICITY
1727 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2713 EV_P = ev_default_loop_ptr = &default_loop_struct;
1728#else 2714#else
1729 ev_default_loop_ptr = 1; 2715 ev_default_loop_ptr = 1;
1730#endif 2716#endif
1731 2717
1732 loop_init (EV_A_ flags); 2718 loop_init (EV_A_ flags);
1733 2719
1734 if (ev_backend (EV_A)) 2720 if (ev_backend (EV_A))
1735 { 2721 {
1736#ifndef _WIN32 2722#if EV_CHILD_ENABLE
1737 ev_signal_init (&childev, childcb, SIGCHLD); 2723 ev_signal_init (&childev, childcb, SIGCHLD);
1738 ev_set_priority (&childev, EV_MAXPRI); 2724 ev_set_priority (&childev, EV_MAXPRI);
1739 ev_signal_start (EV_A_ &childev); 2725 ev_signal_start (EV_A_ &childev);
1740 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2726 ev_unref (EV_A); /* child watcher should not keep loop alive */
1741#endif 2727#endif
… …
1746 2732
1747 return ev_default_loop_ptr; 2733 return ev_default_loop_ptr;
1748} 2734}
1749 2735
1750void 2736void
1751ev_default_destroy (void) 2737ev_loop_fork (EV_P) EV_THROW
1752{ 2738{
1753#if EV_MULTIPLICITY 2739 postfork = 1;
1754 struct ev_loop *loop = ev_default_loop_ptr;
1755#endif
1756
1757 ev_default_loop_ptr = 0;
1758
1759#ifndef _WIN32
1760 ev_ref (EV_A); /* child watcher */
1761 ev_signal_stop (EV_A_ &childev);
1762#endif
1763
1764 loop_destroy (EV_A);
1765}
1766
1767void
1768ev_default_fork (void)
1769{
1770#if EV_MULTIPLICITY
1771 struct ev_loop *loop = ev_default_loop_ptr;
1772#endif
1773
1774 postfork = 1; /* must be in line with ev_loop_fork */
1775} 2740}
1776 2741
1777/*****************************************************************************/ 2742/*****************************************************************************/
1778 2743
1779void 2744void
1780ev_invoke (EV_P_ void *w, int revents) 2745ev_invoke (EV_P_ void *w, int revents)
1781{ 2746{
1782 EV_CB_INVOKE ((W)w, revents); 2747 EV_CB_INVOKE ((W)w, revents);
1783} 2748}
1784 2749
1785inline_speed void 2750unsigned int
1786call_pending (EV_P) 2751ev_pending_count (EV_P) EV_THROW
1787{ 2752{
1788 int pri; 2753 int pri;
2754 unsigned int count = 0;
1789 2755
1790 for (pri = NUMPRI; pri--; ) 2756 for (pri = NUMPRI; pri--; )
2757 count += pendingcnt [pri];
2758
2759 return count;
2760}
2761
2762void noinline
2763ev_invoke_pending (EV_P)
2764{
2765 pendingpri = NUMPRI;
2766
2767 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2768 {
2769 --pendingpri;
2770
1791 while (pendingcnt [pri]) 2771 while (pendingcnt [pendingpri])
1792 { 2772 {
1793 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2773 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1794 2774
1795 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1796 /* ^ this is no longer true, as pending_w could be here */
1797
1798 p->w->pending = 0; 2775 p->w->pending = 0;
1799 EV_CB_INVOKE (p->w, p->events); 2776 EV_CB_INVOKE (p->w, p->events);
1800 EV_FREQUENT_CHECK; 2777 EV_FREQUENT_CHECK;
1801 } 2778 }
2779 }
1802} 2780}
1803 2781
1804#if EV_IDLE_ENABLE 2782#if EV_IDLE_ENABLE
1805/* make idle watchers pending. this handles the "call-idle */ 2783/* make idle watchers pending. this handles the "call-idle */
1806/* only when higher priorities are idle" logic */ 2784/* only when higher priorities are idle" logic */
… …
1858 EV_FREQUENT_CHECK; 2836 EV_FREQUENT_CHECK;
1859 feed_reverse (EV_A_ (W)w); 2837 feed_reverse (EV_A_ (W)w);
1860 } 2838 }
1861 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2839 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1862 2840
1863 feed_reverse_done (EV_A_ EV_TIMEOUT); 2841 feed_reverse_done (EV_A_ EV_TIMER);
1864 } 2842 }
1865} 2843}
1866 2844
1867#if EV_PERIODIC_ENABLE 2845#if EV_PERIODIC_ENABLE
2846
2847static void noinline
2848periodic_recalc (EV_P_ ev_periodic *w)
2849{
2850 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2851 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2852
2853 /* the above almost always errs on the low side */
2854 while (at <= ev_rt_now)
2855 {
2856 ev_tstamp nat = at + w->interval;
2857
2858 /* when resolution fails us, we use ev_rt_now */
2859 if (expect_false (nat == at))
2860 {
2861 at = ev_rt_now;
2862 break;
2863 }
2864
2865 at = nat;
2866 }
2867
2868 ev_at (w) = at;
2869}
2870
1868/* make periodics pending */ 2871/* make periodics pending */
1869inline_size void 2872inline_size void
1870periodics_reify (EV_P) 2873periodics_reify (EV_P)
1871{ 2874{
1872 EV_FREQUENT_CHECK; 2875 EV_FREQUENT_CHECK;
1873 2876
1874 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2877 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1875 { 2878 {
1876 int feed_count = 0;
1877
1878 do 2879 do
1879 { 2880 {
1880 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2881 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1881 2882
1882 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 2883 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1891 ANHE_at_cache (periodics [HEAP0]); 2892 ANHE_at_cache (periodics [HEAP0]);
1892 downheap (periodics, periodiccnt, HEAP0); 2893 downheap (periodics, periodiccnt, HEAP0);
1893 } 2894 }
1894 else if (w->interval) 2895 else if (w->interval)
1895 { 2896 {
1896 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2897 periodic_recalc (EV_A_ w);
1897 /* if next trigger time is not sufficiently in the future, put it there */
1898 /* this might happen because of floating point inexactness */
1899 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1900 {
1901 ev_at (w) += w->interval;
1902
1903 /* if interval is unreasonably low we might still have a time in the past */
1904 /* so correct this. this will make the periodic very inexact, but the user */
1905 /* has effectively asked to get triggered more often than possible */
1906 if (ev_at (w) < ev_rt_now)
1907 ev_at (w) = ev_rt_now;
1908 }
1909
1910 ANHE_at_cache (periodics [HEAP0]); 2898 ANHE_at_cache (periodics [HEAP0]);
1911 downheap (periodics, periodiccnt, HEAP0); 2899 downheap (periodics, periodiccnt, HEAP0);
1912 } 2900 }
1913 else 2901 else
1914 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2902 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1921 feed_reverse_done (EV_A_ EV_PERIODIC); 2909 feed_reverse_done (EV_A_ EV_PERIODIC);
1922 } 2910 }
1923} 2911}
1924 2912
1925/* simply recalculate all periodics */ 2913/* simply recalculate all periodics */
1926/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2914/* TODO: maybe ensure that at least one event happens when jumping forward? */
1927static void noinline 2915static void noinline ecb_cold
1928periodics_reschedule (EV_P) 2916periodics_reschedule (EV_P)
1929{ 2917{
1930 int i; 2918 int i;
1931 2919
1932 /* adjust periodics after time jump */ 2920 /* adjust periodics after time jump */
… …
1935 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2923 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1936 2924
1937 if (w->reschedule_cb) 2925 if (w->reschedule_cb)
1938 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2926 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1939 else if (w->interval) 2927 else if (w->interval)
1940 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2928 periodic_recalc (EV_A_ w);
1941 2929
1942 ANHE_at_cache (periodics [i]); 2930 ANHE_at_cache (periodics [i]);
1943 } 2931 }
1944 2932
1945 reheap (periodics, periodiccnt); 2933 reheap (periodics, periodiccnt);
1946} 2934}
1947#endif 2935#endif
1948 2936
1949/* adjust all timers by a given offset */ 2937/* adjust all timers by a given offset */
1950static void noinline 2938static void noinline ecb_cold
1951timers_reschedule (EV_P_ ev_tstamp adjust) 2939timers_reschedule (EV_P_ ev_tstamp adjust)
1952{ 2940{
1953 int i; 2941 int i;
1954 2942
1955 for (i = 0; i < timercnt; ++i) 2943 for (i = 0; i < timercnt; ++i)
… …
1959 ANHE_at_cache (*he); 2947 ANHE_at_cache (*he);
1960 } 2948 }
1961} 2949}
1962 2950
1963/* fetch new monotonic and realtime times from the kernel */ 2951/* fetch new monotonic and realtime times from the kernel */
1964/* also detetc if there was a timejump, and act accordingly */ 2952/* also detect if there was a timejump, and act accordingly */
1965inline_speed void 2953inline_speed void
1966time_update (EV_P_ ev_tstamp max_block) 2954time_update (EV_P_ ev_tstamp max_block)
1967{ 2955{
1968#if EV_USE_MONOTONIC 2956#if EV_USE_MONOTONIC
1969 if (expect_true (have_monotonic)) 2957 if (expect_true (have_monotonic))
… …
1992 * doesn't hurt either as we only do this on time-jumps or 2980 * doesn't hurt either as we only do this on time-jumps or
1993 * in the unlikely event of having been preempted here. 2981 * in the unlikely event of having been preempted here.
1994 */ 2982 */
1995 for (i = 4; --i; ) 2983 for (i = 4; --i; )
1996 { 2984 {
2985 ev_tstamp diff;
1997 rtmn_diff = ev_rt_now - mn_now; 2986 rtmn_diff = ev_rt_now - mn_now;
1998 2987
2988 diff = odiff - rtmn_diff;
2989
1999 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2990 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2000 return; /* all is well */ 2991 return; /* all is well */
2001 2992
2002 ev_rt_now = ev_time (); 2993 ev_rt_now = ev_time ();
2003 mn_now = get_clock (); 2994 mn_now = get_clock ();
2004 now_floor = mn_now; 2995 now_floor = mn_now;
… …
2026 3017
2027 mn_now = ev_rt_now; 3018 mn_now = ev_rt_now;
2028 } 3019 }
2029} 3020}
2030 3021
2031void 3022int
2032ev_loop (EV_P_ int flags) 3023ev_run (EV_P_ int flags)
2033{ 3024{
3025#if EV_FEATURE_API
2034 ++loop_depth; 3026 ++loop_depth;
3027#endif
2035 3028
3029 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3030
2036 loop_done = EVUNLOOP_CANCEL; 3031 loop_done = EVBREAK_CANCEL;
2037 3032
2038 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3033 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2039 3034
2040 do 3035 do
2041 { 3036 {
2042#if EV_VERIFY >= 2 3037#if EV_VERIFY >= 2
2043 ev_loop_verify (EV_A); 3038 ev_verify (EV_A);
2044#endif 3039#endif
2045 3040
2046#ifndef _WIN32 3041#ifndef _WIN32
2047 if (expect_false (curpid)) /* penalise the forking check even more */ 3042 if (expect_false (curpid)) /* penalise the forking check even more */
2048 if (expect_false (getpid () != curpid)) 3043 if (expect_false (getpid () != curpid))
… …
2056 /* we might have forked, so queue fork handlers */ 3051 /* we might have forked, so queue fork handlers */
2057 if (expect_false (postfork)) 3052 if (expect_false (postfork))
2058 if (forkcnt) 3053 if (forkcnt)
2059 { 3054 {
2060 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3055 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2061 call_pending (EV_A); 3056 EV_INVOKE_PENDING;
2062 } 3057 }
2063#endif 3058#endif
2064 3059
3060#if EV_PREPARE_ENABLE
2065 /* queue prepare watchers (and execute them) */ 3061 /* queue prepare watchers (and execute them) */
2066 if (expect_false (preparecnt)) 3062 if (expect_false (preparecnt))
2067 { 3063 {
2068 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3064 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2069 call_pending (EV_A); 3065 EV_INVOKE_PENDING;
2070 } 3066 }
3067#endif
3068
3069 if (expect_false (loop_done))
3070 break;
2071 3071
2072 /* we might have forked, so reify kernel state if necessary */ 3072 /* we might have forked, so reify kernel state if necessary */
2073 if (expect_false (postfork)) 3073 if (expect_false (postfork))
2074 loop_fork (EV_A); 3074 loop_fork (EV_A);
2075 3075
… …
2079 /* calculate blocking time */ 3079 /* calculate blocking time */
2080 { 3080 {
2081 ev_tstamp waittime = 0.; 3081 ev_tstamp waittime = 0.;
2082 ev_tstamp sleeptime = 0.; 3082 ev_tstamp sleeptime = 0.;
2083 3083
3084 /* remember old timestamp for io_blocktime calculation */
3085 ev_tstamp prev_mn_now = mn_now;
3086
3087 /* update time to cancel out callback processing overhead */
3088 time_update (EV_A_ 1e100);
3089
3090 /* from now on, we want a pipe-wake-up */
3091 pipe_write_wanted = 1;
3092
3093 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3094
2084 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3095 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2085 { 3096 {
2086 /* remember old timestamp for io_blocktime calculation */
2087 ev_tstamp prev_mn_now = mn_now;
2088
2089 /* update time to cancel out callback processing overhead */
2090 time_update (EV_A_ 1e100);
2091
2092 waittime = MAX_BLOCKTIME; 3097 waittime = MAX_BLOCKTIME;
2093 3098
2094 if (timercnt) 3099 if (timercnt)
2095 { 3100 {
2096 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3101 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2097 if (waittime > to) waittime = to; 3102 if (waittime > to) waittime = to;
2098 } 3103 }
2099 3104
2100#if EV_PERIODIC_ENABLE 3105#if EV_PERIODIC_ENABLE
2101 if (periodiccnt) 3106 if (periodiccnt)
2102 { 3107 {
2103 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3108 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2104 if (waittime > to) waittime = to; 3109 if (waittime > to) waittime = to;
2105 } 3110 }
2106#endif 3111#endif
2107 3112
2108 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3113 /* don't let timeouts decrease the waittime below timeout_blocktime */
2109 if (expect_false (waittime < timeout_blocktime)) 3114 if (expect_false (waittime < timeout_blocktime))
2110 waittime = timeout_blocktime; 3115 waittime = timeout_blocktime;
3116
3117 /* at this point, we NEED to wait, so we have to ensure */
3118 /* to pass a minimum nonzero value to the backend */
3119 if (expect_false (waittime < backend_mintime))
3120 waittime = backend_mintime;
2111 3121
2112 /* extra check because io_blocktime is commonly 0 */ 3122 /* extra check because io_blocktime is commonly 0 */
2113 if (expect_false (io_blocktime)) 3123 if (expect_false (io_blocktime))
2114 { 3124 {
2115 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3125 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2116 3126
2117 if (sleeptime > waittime - backend_fudge) 3127 if (sleeptime > waittime - backend_mintime)
2118 sleeptime = waittime - backend_fudge; 3128 sleeptime = waittime - backend_mintime;
2119 3129
2120 if (expect_true (sleeptime > 0.)) 3130 if (expect_true (sleeptime > 0.))
2121 { 3131 {
2122 ev_sleep (sleeptime); 3132 ev_sleep (sleeptime);
2123 waittime -= sleeptime; 3133 waittime -= sleeptime;
2124 } 3134 }
2125 } 3135 }
2126 } 3136 }
2127 3137
3138#if EV_FEATURE_API
2128 ++loop_count; 3139 ++loop_count;
3140#endif
3141 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2129 backend_poll (EV_A_ waittime); 3142 backend_poll (EV_A_ waittime);
3143 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3144
3145 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3146
3147 ECB_MEMORY_FENCE_ACQUIRE;
3148 if (pipe_write_skipped)
3149 {
3150 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3151 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3152 }
3153
2130 3154
2131 /* update ev_rt_now, do magic */ 3155 /* update ev_rt_now, do magic */
2132 time_update (EV_A_ waittime + sleeptime); 3156 time_update (EV_A_ waittime + sleeptime);
2133 } 3157 }
2134 3158
… …
2141#if EV_IDLE_ENABLE 3165#if EV_IDLE_ENABLE
2142 /* queue idle watchers unless other events are pending */ 3166 /* queue idle watchers unless other events are pending */
2143 idle_reify (EV_A); 3167 idle_reify (EV_A);
2144#endif 3168#endif
2145 3169
3170#if EV_CHECK_ENABLE
2146 /* queue check watchers, to be executed first */ 3171 /* queue check watchers, to be executed first */
2147 if (expect_false (checkcnt)) 3172 if (expect_false (checkcnt))
2148 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3173 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3174#endif
2149 3175
2150 call_pending (EV_A); 3176 EV_INVOKE_PENDING;
2151 } 3177 }
2152 while (expect_true ( 3178 while (expect_true (
2153 activecnt 3179 activecnt
2154 && !loop_done 3180 && !loop_done
2155 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3181 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2156 )); 3182 ));
2157 3183
2158 if (loop_done == EVUNLOOP_ONE) 3184 if (loop_done == EVBREAK_ONE)
2159 loop_done = EVUNLOOP_CANCEL; 3185 loop_done = EVBREAK_CANCEL;
2160 3186
3187#if EV_FEATURE_API
2161 --loop_depth; 3188 --loop_depth;
3189#endif
3190
3191 return activecnt;
2162} 3192}
2163 3193
2164void 3194void
2165ev_unloop (EV_P_ int how) 3195ev_break (EV_P_ int how) EV_THROW
2166{ 3196{
2167 loop_done = how; 3197 loop_done = how;
2168} 3198}
2169 3199
2170void 3200void
2171ev_ref (EV_P) 3201ev_ref (EV_P) EV_THROW
2172{ 3202{
2173 ++activecnt; 3203 ++activecnt;
2174} 3204}
2175 3205
2176void 3206void
2177ev_unref (EV_P) 3207ev_unref (EV_P) EV_THROW
2178{ 3208{
2179 --activecnt; 3209 --activecnt;
2180} 3210}
2181 3211
2182void 3212void
2183ev_now_update (EV_P) 3213ev_now_update (EV_P) EV_THROW
2184{ 3214{
2185 time_update (EV_A_ 1e100); 3215 time_update (EV_A_ 1e100);
2186} 3216}
2187 3217
2188void 3218void
2189ev_suspend (EV_P) 3219ev_suspend (EV_P) EV_THROW
2190{ 3220{
2191 ev_now_update (EV_A); 3221 ev_now_update (EV_A);
2192} 3222}
2193 3223
2194void 3224void
2195ev_resume (EV_P) 3225ev_resume (EV_P) EV_THROW
2196{ 3226{
2197 ev_tstamp mn_prev = mn_now; 3227 ev_tstamp mn_prev = mn_now;
2198 3228
2199 ev_now_update (EV_A); 3229 ev_now_update (EV_A);
2200 timers_reschedule (EV_A_ mn_now - mn_prev); 3230 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2217inline_size void 3247inline_size void
2218wlist_del (WL *head, WL elem) 3248wlist_del (WL *head, WL elem)
2219{ 3249{
2220 while (*head) 3250 while (*head)
2221 { 3251 {
2222 if (*head == elem) 3252 if (expect_true (*head == elem))
2223 { 3253 {
2224 *head = elem->next; 3254 *head = elem->next;
2225 return; 3255 break;
2226 } 3256 }
2227 3257
2228 head = &(*head)->next; 3258 head = &(*head)->next;
2229 } 3259 }
2230} 3260}
… …
2239 w->pending = 0; 3269 w->pending = 0;
2240 } 3270 }
2241} 3271}
2242 3272
2243int 3273int
2244ev_clear_pending (EV_P_ void *w) 3274ev_clear_pending (EV_P_ void *w) EV_THROW
2245{ 3275{
2246 W w_ = (W)w; 3276 W w_ = (W)w;
2247 int pending = w_->pending; 3277 int pending = w_->pending;
2248 3278
2249 if (expect_true (pending)) 3279 if (expect_true (pending))
… …
2258} 3288}
2259 3289
2260inline_size void 3290inline_size void
2261pri_adjust (EV_P_ W w) 3291pri_adjust (EV_P_ W w)
2262{ 3292{
2263 int pri = w->priority; 3293 int pri = ev_priority (w);
2264 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3294 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2265 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3295 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2266 w->priority = pri; 3296 ev_set_priority (w, pri);
2267} 3297}
2268 3298
2269inline_speed void 3299inline_speed void
2270ev_start (EV_P_ W w, int active) 3300ev_start (EV_P_ W w, int active)
2271{ 3301{
… …
2282} 3312}
2283 3313
2284/*****************************************************************************/ 3314/*****************************************************************************/
2285 3315
2286void noinline 3316void noinline
2287ev_io_start (EV_P_ ev_io *w) 3317ev_io_start (EV_P_ ev_io *w) EV_THROW
2288{ 3318{
2289 int fd = w->fd; 3319 int fd = w->fd;
2290 3320
2291 if (expect_false (ev_is_active (w))) 3321 if (expect_false (ev_is_active (w)))
2292 return; 3322 return;
2293 3323
2294 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3324 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2295 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3325 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2296 3326
2297 EV_FREQUENT_CHECK; 3327 EV_FREQUENT_CHECK;
2298 3328
2299 ev_start (EV_A_ (W)w, 1); 3329 ev_start (EV_A_ (W)w, 1);
2300 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3330 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2301 wlist_add (&anfds[fd].head, (WL)w); 3331 wlist_add (&anfds[fd].head, (WL)w);
2302 3332
3333 /* common bug, apparently */
3334 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3335
2303 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3336 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2304 w->events &= ~EV__IOFDSET; 3337 w->events &= ~EV__IOFDSET;
2305 3338
2306 EV_FREQUENT_CHECK; 3339 EV_FREQUENT_CHECK;
2307} 3340}
2308 3341
2309void noinline 3342void noinline
2310ev_io_stop (EV_P_ ev_io *w) 3343ev_io_stop (EV_P_ ev_io *w) EV_THROW
2311{ 3344{
2312 clear_pending (EV_A_ (W)w); 3345 clear_pending (EV_A_ (W)w);
2313 if (expect_false (!ev_is_active (w))) 3346 if (expect_false (!ev_is_active (w)))
2314 return; 3347 return;
2315 3348
… …
2318 EV_FREQUENT_CHECK; 3351 EV_FREQUENT_CHECK;
2319 3352
2320 wlist_del (&anfds[w->fd].head, (WL)w); 3353 wlist_del (&anfds[w->fd].head, (WL)w);
2321 ev_stop (EV_A_ (W)w); 3354 ev_stop (EV_A_ (W)w);
2322 3355
2323 fd_change (EV_A_ w->fd, 1); 3356 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2324 3357
2325 EV_FREQUENT_CHECK; 3358 EV_FREQUENT_CHECK;
2326} 3359}
2327 3360
2328void noinline 3361void noinline
2329ev_timer_start (EV_P_ ev_timer *w) 3362ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2330{ 3363{
2331 if (expect_false (ev_is_active (w))) 3364 if (expect_false (ev_is_active (w)))
2332 return; 3365 return;
2333 3366
2334 ev_at (w) += mn_now; 3367 ev_at (w) += mn_now;
… …
2348 3381
2349 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3382 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2350} 3383}
2351 3384
2352void noinline 3385void noinline
2353ev_timer_stop (EV_P_ ev_timer *w) 3386ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2354{ 3387{
2355 clear_pending (EV_A_ (W)w); 3388 clear_pending (EV_A_ (W)w);
2356 if (expect_false (!ev_is_active (w))) 3389 if (expect_false (!ev_is_active (w)))
2357 return; 3390 return;
2358 3391
… …
2370 timers [active] = timers [timercnt + HEAP0]; 3403 timers [active] = timers [timercnt + HEAP0];
2371 adjustheap (timers, timercnt, active); 3404 adjustheap (timers, timercnt, active);
2372 } 3405 }
2373 } 3406 }
2374 3407
2375 EV_FREQUENT_CHECK;
2376
2377 ev_at (w) -= mn_now; 3408 ev_at (w) -= mn_now;
2378 3409
2379 ev_stop (EV_A_ (W)w); 3410 ev_stop (EV_A_ (W)w);
3411
3412 EV_FREQUENT_CHECK;
2380} 3413}
2381 3414
2382void noinline 3415void noinline
2383ev_timer_again (EV_P_ ev_timer *w) 3416ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2384{ 3417{
2385 EV_FREQUENT_CHECK; 3418 EV_FREQUENT_CHECK;
3419
3420 clear_pending (EV_A_ (W)w);
2386 3421
2387 if (ev_is_active (w)) 3422 if (ev_is_active (w))
2388 { 3423 {
2389 if (w->repeat) 3424 if (w->repeat)
2390 { 3425 {
… …
2402 } 3437 }
2403 3438
2404 EV_FREQUENT_CHECK; 3439 EV_FREQUENT_CHECK;
2405} 3440}
2406 3441
3442ev_tstamp
3443ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3444{
3445 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3446}
3447
2407#if EV_PERIODIC_ENABLE 3448#if EV_PERIODIC_ENABLE
2408void noinline 3449void noinline
2409ev_periodic_start (EV_P_ ev_periodic *w) 3450ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2410{ 3451{
2411 if (expect_false (ev_is_active (w))) 3452 if (expect_false (ev_is_active (w)))
2412 return; 3453 return;
2413 3454
2414 if (w->reschedule_cb) 3455 if (w->reschedule_cb)
2415 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3456 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2416 else if (w->interval) 3457 else if (w->interval)
2417 { 3458 {
2418 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3459 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2419 /* this formula differs from the one in periodic_reify because we do not always round up */ 3460 periodic_recalc (EV_A_ w);
2420 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2421 } 3461 }
2422 else 3462 else
2423 ev_at (w) = w->offset; 3463 ev_at (w) = w->offset;
2424 3464
2425 EV_FREQUENT_CHECK; 3465 EV_FREQUENT_CHECK;
… …
2435 3475
2436 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3476 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2437} 3477}
2438 3478
2439void noinline 3479void noinline
2440ev_periodic_stop (EV_P_ ev_periodic *w) 3480ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2441{ 3481{
2442 clear_pending (EV_A_ (W)w); 3482 clear_pending (EV_A_ (W)w);
2443 if (expect_false (!ev_is_active (w))) 3483 if (expect_false (!ev_is_active (w)))
2444 return; 3484 return;
2445 3485
… …
2457 periodics [active] = periodics [periodiccnt + HEAP0]; 3497 periodics [active] = periodics [periodiccnt + HEAP0];
2458 adjustheap (periodics, periodiccnt, active); 3498 adjustheap (periodics, periodiccnt, active);
2459 } 3499 }
2460 } 3500 }
2461 3501
2462 EV_FREQUENT_CHECK;
2463
2464 ev_stop (EV_A_ (W)w); 3502 ev_stop (EV_A_ (W)w);
3503
3504 EV_FREQUENT_CHECK;
2465} 3505}
2466 3506
2467void noinline 3507void noinline
2468ev_periodic_again (EV_P_ ev_periodic *w) 3508ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2469{ 3509{
2470 /* TODO: use adjustheap and recalculation */ 3510 /* TODO: use adjustheap and recalculation */
2471 ev_periodic_stop (EV_A_ w); 3511 ev_periodic_stop (EV_A_ w);
2472 ev_periodic_start (EV_A_ w); 3512 ev_periodic_start (EV_A_ w);
2473} 3513}
… …
2475 3515
2476#ifndef SA_RESTART 3516#ifndef SA_RESTART
2477# define SA_RESTART 0 3517# define SA_RESTART 0
2478#endif 3518#endif
2479 3519
3520#if EV_SIGNAL_ENABLE
3521
2480void noinline 3522void noinline
2481ev_signal_start (EV_P_ ev_signal *w) 3523ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2482{ 3524{
2483#if EV_MULTIPLICITY
2484 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2485#endif
2486 if (expect_false (ev_is_active (w))) 3525 if (expect_false (ev_is_active (w)))
2487 return; 3526 return;
2488 3527
2489 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3528 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2490 3529
2491 evpipe_init (EV_A); 3530#if EV_MULTIPLICITY
3531 assert (("libev: a signal must not be attached to two different loops",
3532 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2492 3533
2493 EV_FREQUENT_CHECK; 3534 signals [w->signum - 1].loop = EV_A;
3535#endif
2494 3536
3537 EV_FREQUENT_CHECK;
3538
3539#if EV_USE_SIGNALFD
3540 if (sigfd == -2)
2495 { 3541 {
2496#ifndef _WIN32 3542 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2497 sigset_t full, prev; 3543 if (sigfd < 0 && errno == EINVAL)
2498 sigfillset (&full); 3544 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2499 sigprocmask (SIG_SETMASK, &full, &prev);
2500#endif
2501 3545
2502 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3546 if (sigfd >= 0)
3547 {
3548 fd_intern (sigfd); /* doing it twice will not hurt */
2503 3549
2504#ifndef _WIN32 3550 sigemptyset (&sigfd_set);
2505 sigprocmask (SIG_SETMASK, &prev, 0); 3551
2506#endif 3552 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3553 ev_set_priority (&sigfd_w, EV_MAXPRI);
3554 ev_io_start (EV_A_ &sigfd_w);
3555 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3556 }
2507 } 3557 }
3558
3559 if (sigfd >= 0)
3560 {
3561 /* TODO: check .head */
3562 sigaddset (&sigfd_set, w->signum);
3563 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3564
3565 signalfd (sigfd, &sigfd_set, 0);
3566 }
3567#endif
2508 3568
2509 ev_start (EV_A_ (W)w, 1); 3569 ev_start (EV_A_ (W)w, 1);
2510 wlist_add (&signals [w->signum - 1].head, (WL)w); 3570 wlist_add (&signals [w->signum - 1].head, (WL)w);
2511 3571
2512 if (!((WL)w)->next) 3572 if (!((WL)w)->next)
3573# if EV_USE_SIGNALFD
3574 if (sigfd < 0) /*TODO*/
3575# endif
2513 { 3576 {
2514#if _WIN32 3577# ifdef _WIN32
3578 evpipe_init (EV_A);
3579
2515 signal (w->signum, ev_sighandler); 3580 signal (w->signum, ev_sighandler);
2516#else 3581# else
2517 struct sigaction sa; 3582 struct sigaction sa;
3583
3584 evpipe_init (EV_A);
3585
2518 sa.sa_handler = ev_sighandler; 3586 sa.sa_handler = ev_sighandler;
2519 sigfillset (&sa.sa_mask); 3587 sigfillset (&sa.sa_mask);
2520 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3588 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2521 sigaction (w->signum, &sa, 0); 3589 sigaction (w->signum, &sa, 0);
3590
3591 if (origflags & EVFLAG_NOSIGMASK)
3592 {
3593 sigemptyset (&sa.sa_mask);
3594 sigaddset (&sa.sa_mask, w->signum);
3595 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3596 }
2522#endif 3597#endif
2523 } 3598 }
2524 3599
2525 EV_FREQUENT_CHECK; 3600 EV_FREQUENT_CHECK;
2526} 3601}
2527 3602
2528void noinline 3603void noinline
2529ev_signal_stop (EV_P_ ev_signal *w) 3604ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2530{ 3605{
2531 clear_pending (EV_A_ (W)w); 3606 clear_pending (EV_A_ (W)w);
2532 if (expect_false (!ev_is_active (w))) 3607 if (expect_false (!ev_is_active (w)))
2533 return; 3608 return;
2534 3609
… …
2536 3611
2537 wlist_del (&signals [w->signum - 1].head, (WL)w); 3612 wlist_del (&signals [w->signum - 1].head, (WL)w);
2538 ev_stop (EV_A_ (W)w); 3613 ev_stop (EV_A_ (W)w);
2539 3614
2540 if (!signals [w->signum - 1].head) 3615 if (!signals [w->signum - 1].head)
3616 {
3617#if EV_MULTIPLICITY
3618 signals [w->signum - 1].loop = 0; /* unattach from signal */
3619#endif
3620#if EV_USE_SIGNALFD
3621 if (sigfd >= 0)
3622 {
3623 sigset_t ss;
3624
3625 sigemptyset (&ss);
3626 sigaddset (&ss, w->signum);
3627 sigdelset (&sigfd_set, w->signum);
3628
3629 signalfd (sigfd, &sigfd_set, 0);
3630 sigprocmask (SIG_UNBLOCK, &ss, 0);
3631 }
3632 else
3633#endif
2541 signal (w->signum, SIG_DFL); 3634 signal (w->signum, SIG_DFL);
3635 }
2542 3636
2543 EV_FREQUENT_CHECK; 3637 EV_FREQUENT_CHECK;
2544} 3638}
3639
3640#endif
3641
3642#if EV_CHILD_ENABLE
2545 3643
2546void 3644void
2547ev_child_start (EV_P_ ev_child *w) 3645ev_child_start (EV_P_ ev_child *w) EV_THROW
2548{ 3646{
2549#if EV_MULTIPLICITY 3647#if EV_MULTIPLICITY
2550 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3648 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2551#endif 3649#endif
2552 if (expect_false (ev_is_active (w))) 3650 if (expect_false (ev_is_active (w)))
2553 return; 3651 return;
2554 3652
2555 EV_FREQUENT_CHECK; 3653 EV_FREQUENT_CHECK;
2556 3654
2557 ev_start (EV_A_ (W)w, 1); 3655 ev_start (EV_A_ (W)w, 1);
2558 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3656 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2559 3657
2560 EV_FREQUENT_CHECK; 3658 EV_FREQUENT_CHECK;
2561} 3659}
2562 3660
2563void 3661void
2564ev_child_stop (EV_P_ ev_child *w) 3662ev_child_stop (EV_P_ ev_child *w) EV_THROW
2565{ 3663{
2566 clear_pending (EV_A_ (W)w); 3664 clear_pending (EV_A_ (W)w);
2567 if (expect_false (!ev_is_active (w))) 3665 if (expect_false (!ev_is_active (w)))
2568 return; 3666 return;
2569 3667
2570 EV_FREQUENT_CHECK; 3668 EV_FREQUENT_CHECK;
2571 3669
2572 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3670 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2573 ev_stop (EV_A_ (W)w); 3671 ev_stop (EV_A_ (W)w);
2574 3672
2575 EV_FREQUENT_CHECK; 3673 EV_FREQUENT_CHECK;
2576} 3674}
3675
3676#endif
2577 3677
2578#if EV_STAT_ENABLE 3678#if EV_STAT_ENABLE
2579 3679
2580# ifdef _WIN32 3680# ifdef _WIN32
2581# undef lstat 3681# undef lstat
… …
2587#define MIN_STAT_INTERVAL 0.1074891 3687#define MIN_STAT_INTERVAL 0.1074891
2588 3688
2589static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3689static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2590 3690
2591#if EV_USE_INOTIFY 3691#if EV_USE_INOTIFY
2592# define EV_INOTIFY_BUFSIZE 8192 3692
3693/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3694# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2593 3695
2594static void noinline 3696static void noinline
2595infy_add (EV_P_ ev_stat *w) 3697infy_add (EV_P_ ev_stat *w)
2596{ 3698{
2597 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); 3699 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);
2598 3700
2599 if (w->wd < 0) 3701 if (w->wd >= 0)
3702 {
3703 struct statfs sfs;
3704
3705 /* now local changes will be tracked by inotify, but remote changes won't */
3706 /* unless the filesystem is known to be local, we therefore still poll */
3707 /* also do poll on <2.6.25, but with normal frequency */
3708
3709 if (!fs_2625)
3710 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3711 else if (!statfs (w->path, &sfs)
3712 && (sfs.f_type == 0x1373 /* devfs */
3713 || sfs.f_type == 0xEF53 /* ext2/3 */
3714 || sfs.f_type == 0x3153464a /* jfs */
3715 || sfs.f_type == 0x52654973 /* reiser3 */
3716 || sfs.f_type == 0x01021994 /* tempfs */
3717 || sfs.f_type == 0x58465342 /* xfs */))
3718 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3719 else
3720 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2600 { 3721 }
3722 else
3723 {
3724 /* can't use inotify, continue to stat */
2601 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3725 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2602 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2603 3726
2604 /* monitor some parent directory for speedup hints */ 3727 /* if path is not there, monitor some parent directory for speedup hints */
2605 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3728 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2606 /* but an efficiency issue only */ 3729 /* but an efficiency issue only */
2607 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3730 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2608 { 3731 {
2609 char path [4096]; 3732 char path [4096];
… …
2619 if (!pend || pend == path) 3742 if (!pend || pend == path)
2620 break; 3743 break;
2621 3744
2622 *pend = 0; 3745 *pend = 0;
2623 w->wd = inotify_add_watch (fs_fd, path, mask); 3746 w->wd = inotify_add_watch (fs_fd, path, mask);
2624 } 3747 }
2625 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3748 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2626 } 3749 }
2627 } 3750 }
2628 3751
2629 if (w->wd >= 0) 3752 if (w->wd >= 0)
2630 {
2631 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3753 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2632 3754
2633 /* now local changes will be tracked by inotify, but remote changes won't */ 3755 /* now re-arm timer, if required */
2634 /* unless the filesystem it known to be local, we therefore still poll */ 3756 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2635 /* also do poll on <2.6.25, but with normal frequency */
2636 struct statfs sfs;
2637
2638 if (fs_2625 && !statfs (w->path, &sfs))
2639 if (sfs.f_type == 0x1373 /* devfs */
2640 || sfs.f_type == 0xEF53 /* ext2/3 */
2641 || sfs.f_type == 0x3153464a /* jfs */
2642 || sfs.f_type == 0x52654973 /* reiser3 */
2643 || sfs.f_type == 0x01021994 /* tempfs */
2644 || sfs.f_type == 0x58465342 /* xfs */)
2645 return;
2646
2647 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2648 ev_timer_again (EV_A_ &w->timer); 3757 ev_timer_again (EV_A_ &w->timer);
2649 } 3758 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2650} 3759}
2651 3760
2652static void noinline 3761static void noinline
2653infy_del (EV_P_ ev_stat *w) 3762infy_del (EV_P_ ev_stat *w)
2654{ 3763{
… …
2657 3766
2658 if (wd < 0) 3767 if (wd < 0)
2659 return; 3768 return;
2660 3769
2661 w->wd = -2; 3770 w->wd = -2;
2662 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3771 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2663 wlist_del (&fs_hash [slot].head, (WL)w); 3772 wlist_del (&fs_hash [slot].head, (WL)w);
2664 3773
2665 /* remove this watcher, if others are watching it, they will rearm */ 3774 /* remove this watcher, if others are watching it, they will rearm */
2666 inotify_rm_watch (fs_fd, wd); 3775 inotify_rm_watch (fs_fd, wd);
2667} 3776}
… …
2669static void noinline 3778static void noinline
2670infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3779infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2671{ 3780{
2672 if (slot < 0) 3781 if (slot < 0)
2673 /* overflow, need to check for all hash slots */ 3782 /* overflow, need to check for all hash slots */
2674 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3783 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2675 infy_wd (EV_A_ slot, wd, ev); 3784 infy_wd (EV_A_ slot, wd, ev);
2676 else 3785 else
2677 { 3786 {
2678 WL w_; 3787 WL w_;
2679 3788
2680 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3789 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2681 { 3790 {
2682 ev_stat *w = (ev_stat *)w_; 3791 ev_stat *w = (ev_stat *)w_;
2683 w_ = w_->next; /* lets us remove this watcher and all before it */ 3792 w_ = w_->next; /* lets us remove this watcher and all before it */
2684 3793
2685 if (w->wd == wd || wd == -1) 3794 if (w->wd == wd || wd == -1)
2686 { 3795 {
2687 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3796 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2688 { 3797 {
2689 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3798 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2690 w->wd = -1; 3799 w->wd = -1;
2691 infy_add (EV_A_ w); /* re-add, no matter what */ 3800 infy_add (EV_A_ w); /* re-add, no matter what */
2692 } 3801 }
2693 3802
2694 stat_timer_cb (EV_A_ &w->timer, 0); 3803 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2699 3808
2700static void 3809static void
2701infy_cb (EV_P_ ev_io *w, int revents) 3810infy_cb (EV_P_ ev_io *w, int revents)
2702{ 3811{
2703 char buf [EV_INOTIFY_BUFSIZE]; 3812 char buf [EV_INOTIFY_BUFSIZE];
2704 struct inotify_event *ev = (struct inotify_event *)buf;
2705 int ofs; 3813 int ofs;
2706 int len = read (fs_fd, buf, sizeof (buf)); 3814 int len = read (fs_fd, buf, sizeof (buf));
2707 3815
2708 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3816 for (ofs = 0; ofs < len; )
3817 {
3818 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2709 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3819 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3820 ofs += sizeof (struct inotify_event) + ev->len;
3821 }
2710} 3822}
2711 3823
2712inline_size void 3824inline_size void ecb_cold
2713check_2625 (EV_P) 3825ev_check_2625 (EV_P)
2714{ 3826{
2715 /* kernels < 2.6.25 are borked 3827 /* kernels < 2.6.25 are borked
2716 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3828 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2717 */ 3829 */
2718 struct utsname buf; 3830 if (ev_linux_version () < 0x020619)
2719 int major, minor, micro;
2720
2721 if (uname (&buf))
2722 return; 3831 return;
2723 3832
2724 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2725 return;
2726
2727 if (major < 2
2728 || (major == 2 && minor < 6)
2729 || (major == 2 && minor == 6 && micro < 25))
2730 return;
2731
2732 fs_2625 = 1; 3833 fs_2625 = 1;
3834}
3835
3836inline_size int
3837infy_newfd (void)
3838{
3839#if defined IN_CLOEXEC && defined IN_NONBLOCK
3840 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3841 if (fd >= 0)
3842 return fd;
3843#endif
3844 return inotify_init ();
2733} 3845}
2734 3846
2735inline_size void 3847inline_size void
2736infy_init (EV_P) 3848infy_init (EV_P)
2737{ 3849{
2738 if (fs_fd != -2) 3850 if (fs_fd != -2)
2739 return; 3851 return;
2740 3852
2741 fs_fd = -1; 3853 fs_fd = -1;
2742 3854
2743 check_2625 (EV_A); 3855 ev_check_2625 (EV_A);
2744 3856
2745 fs_fd = inotify_init (); 3857 fs_fd = infy_newfd ();
2746 3858
2747 if (fs_fd >= 0) 3859 if (fs_fd >= 0)
2748 { 3860 {
3861 fd_intern (fs_fd);
2749 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3862 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2750 ev_set_priority (&fs_w, EV_MAXPRI); 3863 ev_set_priority (&fs_w, EV_MAXPRI);
2751 ev_io_start (EV_A_ &fs_w); 3864 ev_io_start (EV_A_ &fs_w);
3865 ev_unref (EV_A);
2752 } 3866 }
2753} 3867}
2754 3868
2755inline_size void 3869inline_size void
2756infy_fork (EV_P) 3870infy_fork (EV_P)
… …
2758 int slot; 3872 int slot;
2759 3873
2760 if (fs_fd < 0) 3874 if (fs_fd < 0)
2761 return; 3875 return;
2762 3876
3877 ev_ref (EV_A);
3878 ev_io_stop (EV_A_ &fs_w);
2763 close (fs_fd); 3879 close (fs_fd);
2764 fs_fd = inotify_init (); 3880 fs_fd = infy_newfd ();
2765 3881
3882 if (fs_fd >= 0)
3883 {
3884 fd_intern (fs_fd);
3885 ev_io_set (&fs_w, fs_fd, EV_READ);
3886 ev_io_start (EV_A_ &fs_w);
3887 ev_unref (EV_A);
3888 }
3889
2766 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3890 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2767 { 3891 {
2768 WL w_ = fs_hash [slot].head; 3892 WL w_ = fs_hash [slot].head;
2769 fs_hash [slot].head = 0; 3893 fs_hash [slot].head = 0;
2770 3894
2771 while (w_) 3895 while (w_)
… …
2776 w->wd = -1; 3900 w->wd = -1;
2777 3901
2778 if (fs_fd >= 0) 3902 if (fs_fd >= 0)
2779 infy_add (EV_A_ w); /* re-add, no matter what */ 3903 infy_add (EV_A_ w); /* re-add, no matter what */
2780 else 3904 else
3905 {
3906 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3907 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2781 ev_timer_again (EV_A_ &w->timer); 3908 ev_timer_again (EV_A_ &w->timer);
3909 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3910 }
2782 } 3911 }
2783 } 3912 }
2784} 3913}
2785 3914
2786#endif 3915#endif
… …
2790#else 3919#else
2791# define EV_LSTAT(p,b) lstat (p, b) 3920# define EV_LSTAT(p,b) lstat (p, b)
2792#endif 3921#endif
2793 3922
2794void 3923void
2795ev_stat_stat (EV_P_ ev_stat *w) 3924ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2796{ 3925{
2797 if (lstat (w->path, &w->attr) < 0) 3926 if (lstat (w->path, &w->attr) < 0)
2798 w->attr.st_nlink = 0; 3927 w->attr.st_nlink = 0;
2799 else if (!w->attr.st_nlink) 3928 else if (!w->attr.st_nlink)
2800 w->attr.st_nlink = 1; 3929 w->attr.st_nlink = 1;
… …
2803static void noinline 3932static void noinline
2804stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3933stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2805{ 3934{
2806 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3935 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2807 3936
2808 /* we copy this here each the time so that */ 3937 ev_statdata prev = w->attr;
2809 /* prev has the old value when the callback gets invoked */
2810 w->prev = w->attr;
2811 ev_stat_stat (EV_A_ w); 3938 ev_stat_stat (EV_A_ w);
2812 3939
2813 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3940 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2814 if ( 3941 if (
2815 w->prev.st_dev != w->attr.st_dev 3942 prev.st_dev != w->attr.st_dev
2816 || w->prev.st_ino != w->attr.st_ino 3943 || prev.st_ino != w->attr.st_ino
2817 || w->prev.st_mode != w->attr.st_mode 3944 || prev.st_mode != w->attr.st_mode
2818 || w->prev.st_nlink != w->attr.st_nlink 3945 || prev.st_nlink != w->attr.st_nlink
2819 || w->prev.st_uid != w->attr.st_uid 3946 || prev.st_uid != w->attr.st_uid
2820 || w->prev.st_gid != w->attr.st_gid 3947 || prev.st_gid != w->attr.st_gid
2821 || w->prev.st_rdev != w->attr.st_rdev 3948 || prev.st_rdev != w->attr.st_rdev
2822 || w->prev.st_size != w->attr.st_size 3949 || prev.st_size != w->attr.st_size
2823 || w->prev.st_atime != w->attr.st_atime 3950 || prev.st_atime != w->attr.st_atime
2824 || w->prev.st_mtime != w->attr.st_mtime 3951 || prev.st_mtime != w->attr.st_mtime
2825 || w->prev.st_ctime != w->attr.st_ctime 3952 || prev.st_ctime != w->attr.st_ctime
2826 ) { 3953 ) {
3954 /* we only update w->prev on actual differences */
3955 /* in case we test more often than invoke the callback, */
3956 /* to ensure that prev is always different to attr */
3957 w->prev = prev;
3958
2827 #if EV_USE_INOTIFY 3959 #if EV_USE_INOTIFY
2828 if (fs_fd >= 0) 3960 if (fs_fd >= 0)
2829 { 3961 {
2830 infy_del (EV_A_ w); 3962 infy_del (EV_A_ w);
2831 infy_add (EV_A_ w); 3963 infy_add (EV_A_ w);
… …
2836 ev_feed_event (EV_A_ w, EV_STAT); 3968 ev_feed_event (EV_A_ w, EV_STAT);
2837 } 3969 }
2838} 3970}
2839 3971
2840void 3972void
2841ev_stat_start (EV_P_ ev_stat *w) 3973ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2842{ 3974{
2843 if (expect_false (ev_is_active (w))) 3975 if (expect_false (ev_is_active (w)))
2844 return; 3976 return;
2845 3977
2846 ev_stat_stat (EV_A_ w); 3978 ev_stat_stat (EV_A_ w);
… …
2856 3988
2857 if (fs_fd >= 0) 3989 if (fs_fd >= 0)
2858 infy_add (EV_A_ w); 3990 infy_add (EV_A_ w);
2859 else 3991 else
2860#endif 3992#endif
3993 {
2861 ev_timer_again (EV_A_ &w->timer); 3994 ev_timer_again (EV_A_ &w->timer);
3995 ev_unref (EV_A);
3996 }
2862 3997
2863 ev_start (EV_A_ (W)w, 1); 3998 ev_start (EV_A_ (W)w, 1);
2864 3999
2865 EV_FREQUENT_CHECK; 4000 EV_FREQUENT_CHECK;
2866} 4001}
2867 4002
2868void 4003void
2869ev_stat_stop (EV_P_ ev_stat *w) 4004ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2870{ 4005{
2871 clear_pending (EV_A_ (W)w); 4006 clear_pending (EV_A_ (W)w);
2872 if (expect_false (!ev_is_active (w))) 4007 if (expect_false (!ev_is_active (w)))
2873 return; 4008 return;
2874 4009
2875 EV_FREQUENT_CHECK; 4010 EV_FREQUENT_CHECK;
2876 4011
2877#if EV_USE_INOTIFY 4012#if EV_USE_INOTIFY
2878 infy_del (EV_A_ w); 4013 infy_del (EV_A_ w);
2879#endif 4014#endif
4015
4016 if (ev_is_active (&w->timer))
4017 {
4018 ev_ref (EV_A);
2880 ev_timer_stop (EV_A_ &w->timer); 4019 ev_timer_stop (EV_A_ &w->timer);
4020 }
2881 4021
2882 ev_stop (EV_A_ (W)w); 4022 ev_stop (EV_A_ (W)w);
2883 4023
2884 EV_FREQUENT_CHECK; 4024 EV_FREQUENT_CHECK;
2885} 4025}
2886#endif 4026#endif
2887 4027
2888#if EV_IDLE_ENABLE 4028#if EV_IDLE_ENABLE
2889void 4029void
2890ev_idle_start (EV_P_ ev_idle *w) 4030ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2891{ 4031{
2892 if (expect_false (ev_is_active (w))) 4032 if (expect_false (ev_is_active (w)))
2893 return; 4033 return;
2894 4034
2895 pri_adjust (EV_A_ (W)w); 4035 pri_adjust (EV_A_ (W)w);
… …
2908 4048
2909 EV_FREQUENT_CHECK; 4049 EV_FREQUENT_CHECK;
2910} 4050}
2911 4051
2912void 4052void
2913ev_idle_stop (EV_P_ ev_idle *w) 4053ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2914{ 4054{
2915 clear_pending (EV_A_ (W)w); 4055 clear_pending (EV_A_ (W)w);
2916 if (expect_false (!ev_is_active (w))) 4056 if (expect_false (!ev_is_active (w)))
2917 return; 4057 return;
2918 4058
… …
2930 4070
2931 EV_FREQUENT_CHECK; 4071 EV_FREQUENT_CHECK;
2932} 4072}
2933#endif 4073#endif
2934 4074
4075#if EV_PREPARE_ENABLE
2935void 4076void
2936ev_prepare_start (EV_P_ ev_prepare *w) 4077ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2937{ 4078{
2938 if (expect_false (ev_is_active (w))) 4079 if (expect_false (ev_is_active (w)))
2939 return; 4080 return;
2940 4081
2941 EV_FREQUENT_CHECK; 4082 EV_FREQUENT_CHECK;
… …
2946 4087
2947 EV_FREQUENT_CHECK; 4088 EV_FREQUENT_CHECK;
2948} 4089}
2949 4090
2950void 4091void
2951ev_prepare_stop (EV_P_ ev_prepare *w) 4092ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2952{ 4093{
2953 clear_pending (EV_A_ (W)w); 4094 clear_pending (EV_A_ (W)w);
2954 if (expect_false (!ev_is_active (w))) 4095 if (expect_false (!ev_is_active (w)))
2955 return; 4096 return;
2956 4097
… …
2965 4106
2966 ev_stop (EV_A_ (W)w); 4107 ev_stop (EV_A_ (W)w);
2967 4108
2968 EV_FREQUENT_CHECK; 4109 EV_FREQUENT_CHECK;
2969} 4110}
4111#endif
2970 4112
4113#if EV_CHECK_ENABLE
2971void 4114void
2972ev_check_start (EV_P_ ev_check *w) 4115ev_check_start (EV_P_ ev_check *w) EV_THROW
2973{ 4116{
2974 if (expect_false (ev_is_active (w))) 4117 if (expect_false (ev_is_active (w)))
2975 return; 4118 return;
2976 4119
2977 EV_FREQUENT_CHECK; 4120 EV_FREQUENT_CHECK;
… …
2982 4125
2983 EV_FREQUENT_CHECK; 4126 EV_FREQUENT_CHECK;
2984} 4127}
2985 4128
2986void 4129void
2987ev_check_stop (EV_P_ ev_check *w) 4130ev_check_stop (EV_P_ ev_check *w) EV_THROW
2988{ 4131{
2989 clear_pending (EV_A_ (W)w); 4132 clear_pending (EV_A_ (W)w);
2990 if (expect_false (!ev_is_active (w))) 4133 if (expect_false (!ev_is_active (w)))
2991 return; 4134 return;
2992 4135
… …
3001 4144
3002 ev_stop (EV_A_ (W)w); 4145 ev_stop (EV_A_ (W)w);
3003 4146
3004 EV_FREQUENT_CHECK; 4147 EV_FREQUENT_CHECK;
3005} 4148}
4149#endif
3006 4150
3007#if EV_EMBED_ENABLE 4151#if EV_EMBED_ENABLE
3008void noinline 4152void noinline
3009ev_embed_sweep (EV_P_ ev_embed *w) 4153ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3010{ 4154{
3011 ev_loop (w->other, EVLOOP_NONBLOCK); 4155 ev_run (w->other, EVRUN_NOWAIT);
3012} 4156}
3013 4157
3014static void 4158static void
3015embed_io_cb (EV_P_ ev_io *io, int revents) 4159embed_io_cb (EV_P_ ev_io *io, int revents)
3016{ 4160{
3017 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4161 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3018 4162
3019 if (ev_cb (w)) 4163 if (ev_cb (w))
3020 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4164 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3021 else 4165 else
3022 ev_loop (w->other, EVLOOP_NONBLOCK); 4166 ev_run (w->other, EVRUN_NOWAIT);
3023} 4167}
3024 4168
3025static void 4169static void
3026embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4170embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3027{ 4171{
3028 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4172 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3029 4173
3030 { 4174 {
3031 struct ev_loop *loop = w->other; 4175 EV_P = w->other;
3032 4176
3033 while (fdchangecnt) 4177 while (fdchangecnt)
3034 { 4178 {
3035 fd_reify (EV_A); 4179 fd_reify (EV_A);
3036 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4180 ev_run (EV_A_ EVRUN_NOWAIT);
3037 } 4181 }
3038 } 4182 }
3039} 4183}
3040 4184
3041static void 4185static void
… …
3044 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4188 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3045 4189
3046 ev_embed_stop (EV_A_ w); 4190 ev_embed_stop (EV_A_ w);
3047 4191
3048 { 4192 {
3049 struct ev_loop *loop = w->other; 4193 EV_P = w->other;
3050 4194
3051 ev_loop_fork (EV_A); 4195 ev_loop_fork (EV_A);
3052 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4196 ev_run (EV_A_ EVRUN_NOWAIT);
3053 } 4197 }
3054 4198
3055 ev_embed_start (EV_A_ w); 4199 ev_embed_start (EV_A_ w);
3056} 4200}
3057 4201
… …
3062 ev_idle_stop (EV_A_ idle); 4206 ev_idle_stop (EV_A_ idle);
3063} 4207}
3064#endif 4208#endif
3065 4209
3066void 4210void
3067ev_embed_start (EV_P_ ev_embed *w) 4211ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3068{ 4212{
3069 if (expect_false (ev_is_active (w))) 4213 if (expect_false (ev_is_active (w)))
3070 return; 4214 return;
3071 4215
3072 { 4216 {
3073 struct ev_loop *loop = w->other; 4217 EV_P = w->other;
3074 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4218 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3075 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4219 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3076 } 4220 }
3077 4221
3078 EV_FREQUENT_CHECK; 4222 EV_FREQUENT_CHECK;
… …
3093 4237
3094 EV_FREQUENT_CHECK; 4238 EV_FREQUENT_CHECK;
3095} 4239}
3096 4240
3097void 4241void
3098ev_embed_stop (EV_P_ ev_embed *w) 4242ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3099{ 4243{
3100 clear_pending (EV_A_ (W)w); 4244 clear_pending (EV_A_ (W)w);
3101 if (expect_false (!ev_is_active (w))) 4245 if (expect_false (!ev_is_active (w)))
3102 return; 4246 return;
3103 4247
… …
3105 4249
3106 ev_io_stop (EV_A_ &w->io); 4250 ev_io_stop (EV_A_ &w->io);
3107 ev_prepare_stop (EV_A_ &w->prepare); 4251 ev_prepare_stop (EV_A_ &w->prepare);
3108 ev_fork_stop (EV_A_ &w->fork); 4252 ev_fork_stop (EV_A_ &w->fork);
3109 4253
4254 ev_stop (EV_A_ (W)w);
4255
3110 EV_FREQUENT_CHECK; 4256 EV_FREQUENT_CHECK;
3111} 4257}
3112#endif 4258#endif
3113 4259
3114#if EV_FORK_ENABLE 4260#if EV_FORK_ENABLE
3115void 4261void
3116ev_fork_start (EV_P_ ev_fork *w) 4262ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3117{ 4263{
3118 if (expect_false (ev_is_active (w))) 4264 if (expect_false (ev_is_active (w)))
3119 return; 4265 return;
3120 4266
3121 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
… …
3126 4272
3127 EV_FREQUENT_CHECK; 4273 EV_FREQUENT_CHECK;
3128} 4274}
3129 4275
3130void 4276void
3131ev_fork_stop (EV_P_ ev_fork *w) 4277ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3132{ 4278{
3133 clear_pending (EV_A_ (W)w); 4279 clear_pending (EV_A_ (W)w);
3134 if (expect_false (!ev_is_active (w))) 4280 if (expect_false (!ev_is_active (w)))
3135 return; 4281 return;
3136 4282
… …
3147 4293
3148 EV_FREQUENT_CHECK; 4294 EV_FREQUENT_CHECK;
3149} 4295}
3150#endif 4296#endif
3151 4297
4298#if EV_CLEANUP_ENABLE
4299void
4300ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4301{
4302 if (expect_false (ev_is_active (w)))
4303 return;
4304
4305 EV_FREQUENT_CHECK;
4306
4307 ev_start (EV_A_ (W)w, ++cleanupcnt);
4308 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4309 cleanups [cleanupcnt - 1] = w;
4310
4311 /* cleanup watchers should never keep a refcount on the loop */
4312 ev_unref (EV_A);
4313 EV_FREQUENT_CHECK;
4314}
4315
4316void
4317ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4318{
4319 clear_pending (EV_A_ (W)w);
4320 if (expect_false (!ev_is_active (w)))
4321 return;
4322
4323 EV_FREQUENT_CHECK;
4324 ev_ref (EV_A);
4325
4326 {
4327 int active = ev_active (w);
4328
4329 cleanups [active - 1] = cleanups [--cleanupcnt];
4330 ev_active (cleanups [active - 1]) = active;
4331 }
4332
4333 ev_stop (EV_A_ (W)w);
4334
4335 EV_FREQUENT_CHECK;
4336}
4337#endif
4338
3152#if EV_ASYNC_ENABLE 4339#if EV_ASYNC_ENABLE
3153void 4340void
3154ev_async_start (EV_P_ ev_async *w) 4341ev_async_start (EV_P_ ev_async *w) EV_THROW
3155{ 4342{
3156 if (expect_false (ev_is_active (w))) 4343 if (expect_false (ev_is_active (w)))
3157 return; 4344 return;
4345
4346 w->sent = 0;
3158 4347
3159 evpipe_init (EV_A); 4348 evpipe_init (EV_A);
3160 4349
3161 EV_FREQUENT_CHECK; 4350 EV_FREQUENT_CHECK;
3162 4351
… …
3166 4355
3167 EV_FREQUENT_CHECK; 4356 EV_FREQUENT_CHECK;
3168} 4357}
3169 4358
3170void 4359void
3171ev_async_stop (EV_P_ ev_async *w) 4360ev_async_stop (EV_P_ ev_async *w) EV_THROW
3172{ 4361{
3173 clear_pending (EV_A_ (W)w); 4362 clear_pending (EV_A_ (W)w);
3174 if (expect_false (!ev_is_active (w))) 4363 if (expect_false (!ev_is_active (w)))
3175 return; 4364 return;
3176 4365
… …
3187 4376
3188 EV_FREQUENT_CHECK; 4377 EV_FREQUENT_CHECK;
3189} 4378}
3190 4379
3191void 4380void
3192ev_async_send (EV_P_ ev_async *w) 4381ev_async_send (EV_P_ ev_async *w) EV_THROW
3193{ 4382{
3194 w->sent = 1; 4383 w->sent = 1;
3195 evpipe_write (EV_A_ &gotasync); 4384 evpipe_write (EV_A_ &async_pending);
3196} 4385}
3197#endif 4386#endif
3198 4387
3199/*****************************************************************************/ 4388/*****************************************************************************/
3200 4389
… …
3234 4423
3235 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4424 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3236} 4425}
3237 4426
3238void 4427void
3239ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4428ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3240{ 4429{
3241 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4430 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3242 4431
3243 if (expect_false (!once)) 4432 if (expect_false (!once))
3244 { 4433 {
3245 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4434 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3246 return; 4435 return;
3247 } 4436 }
3248 4437
3249 once->cb = cb; 4438 once->cb = cb;
3250 once->arg = arg; 4439 once->arg = arg;
… …
3265} 4454}
3266 4455
3267/*****************************************************************************/ 4456/*****************************************************************************/
3268 4457
3269#if EV_WALK_ENABLE 4458#if EV_WALK_ENABLE
3270void 4459void ecb_cold
3271ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4460ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3272{ 4461{
3273 int i, j; 4462 int i, j;
3274 ev_watcher_list *wl, *wn; 4463 ev_watcher_list *wl, *wn;
3275 4464
3276 if (types & (EV_IO | EV_EMBED)) 4465 if (types & (EV_IO | EV_EMBED))
… …
3319 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4508 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3320#endif 4509#endif
3321 4510
3322#if EV_IDLE_ENABLE 4511#if EV_IDLE_ENABLE
3323 if (types & EV_IDLE) 4512 if (types & EV_IDLE)
3324 for (j = NUMPRI; i--; ) 4513 for (j = NUMPRI; j--; )
3325 for (i = idlecnt [j]; i--; ) 4514 for (i = idlecnt [j]; i--; )
3326 cb (EV_A_ EV_IDLE, idles [j][i]); 4515 cb (EV_A_ EV_IDLE, idles [j][i]);
3327#endif 4516#endif
3328 4517
3329#if EV_FORK_ENABLE 4518#if EV_FORK_ENABLE
… …
3337 if (types & EV_ASYNC) 4526 if (types & EV_ASYNC)
3338 for (i = asynccnt; i--; ) 4527 for (i = asynccnt; i--; )
3339 cb (EV_A_ EV_ASYNC, asyncs [i]); 4528 cb (EV_A_ EV_ASYNC, asyncs [i]);
3340#endif 4529#endif
3341 4530
4531#if EV_PREPARE_ENABLE
3342 if (types & EV_PREPARE) 4532 if (types & EV_PREPARE)
3343 for (i = preparecnt; i--; ) 4533 for (i = preparecnt; i--; )
3344#if EV_EMBED_ENABLE 4534# if EV_EMBED_ENABLE
3345 if (ev_cb (prepares [i]) != embed_prepare_cb) 4535 if (ev_cb (prepares [i]) != embed_prepare_cb)
3346#endif 4536# endif
3347 cb (EV_A_ EV_PREPARE, prepares [i]); 4537 cb (EV_A_ EV_PREPARE, prepares [i]);
4538#endif
3348 4539
4540#if EV_CHECK_ENABLE
3349 if (types & EV_CHECK) 4541 if (types & EV_CHECK)
3350 for (i = checkcnt; i--; ) 4542 for (i = checkcnt; i--; )
3351 cb (EV_A_ EV_CHECK, checks [i]); 4543 cb (EV_A_ EV_CHECK, checks [i]);
4544#endif
3352 4545
4546#if EV_SIGNAL_ENABLE
3353 if (types & EV_SIGNAL) 4547 if (types & EV_SIGNAL)
3354 for (i = 0; i < signalmax; ++i) 4548 for (i = 0; i < EV_NSIG - 1; ++i)
3355 for (wl = signals [i].head; wl; ) 4549 for (wl = signals [i].head; wl; )
3356 { 4550 {
3357 wn = wl->next; 4551 wn = wl->next;
3358 cb (EV_A_ EV_SIGNAL, wl); 4552 cb (EV_A_ EV_SIGNAL, wl);
3359 wl = wn; 4553 wl = wn;
3360 } 4554 }
4555#endif
3361 4556
4557#if EV_CHILD_ENABLE
3362 if (types & EV_CHILD) 4558 if (types & EV_CHILD)
3363 for (i = EV_PID_HASHSIZE; i--; ) 4559 for (i = (EV_PID_HASHSIZE); i--; )
3364 for (wl = childs [i]; wl; ) 4560 for (wl = childs [i]; wl; )
3365 { 4561 {
3366 wn = wl->next; 4562 wn = wl->next;
3367 cb (EV_A_ EV_CHILD, wl); 4563 cb (EV_A_ EV_CHILD, wl);
3368 wl = wn; 4564 wl = wn;
3369 } 4565 }
4566#endif
3370/* EV_STAT 0x00001000 /* stat data changed */ 4567/* EV_STAT 0x00001000 /* stat data changed */
3371/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4568/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3372} 4569}
3373#endif 4570#endif
3374 4571
3375#if EV_MULTIPLICITY 4572#if EV_MULTIPLICITY
3376 #include "ev_wrap.h" 4573 #include "ev_wrap.h"
3377#endif 4574#endif
3378 4575
3379#ifdef __cplusplus
3380}
3381#endif
3382

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