ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.302 by root, Thu Jul 16 15:08:08 2009 UTC vs.
Revision 1.451 by root, Tue Jan 22 05:18:28 2013 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 0x00010002
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
378#else 535#else
379# define expect(expr,value) (expr) 536 #include <inttypes.h>
380# define noinline 537 #if UINTMAX_MAX > 0xffffffffU
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 538 #define ECB_PTRSIZE 8
382# define inline 539 #else
540 #define ECB_PTRSIZE 4
541 #endif
383# endif 542#endif
543
544/* many compilers define _GNUC_ to some versions but then only implement
545 * what their idiot authors think are the "more important" extensions,
546 * causing enormous grief in return for some better fake benchmark numbers.
547 * or so.
548 * we try to detect these and simply assume they are not gcc - if they have
549 * an issue with that they should have done it right in the first place.
550 */
551#ifndef ECB_GCC_VERSION
552 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
553 #define ECB_GCC_VERSION(major,minor) 0
554 #else
555 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
384#endif 556 #endif
557#endif
385 558
559#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
560#define ECB_C99 (__STDC_VERSION__ >= 199901L)
561#define ECB_C11 (__STDC_VERSION__ >= 201112L)
562#define ECB_CPP (__cplusplus+0)
563#define ECB_CPP11 (__cplusplus >= 201103L)
564
565#if ECB_CPP
566 #define ECB_EXTERN_C extern "C"
567 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
568 #define ECB_EXTERN_C_END }
569#else
570 #define ECB_EXTERN_C extern
571 #define ECB_EXTERN_C_BEG
572 #define ECB_EXTERN_C_END
573#endif
574
575/*****************************************************************************/
576
577/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
578/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
579
580#if ECB_NO_THREADS
581 #define ECB_NO_SMP 1
582#endif
583
584#if ECB_NO_SMP
585 #define ECB_MEMORY_FENCE do { } while (0)
586#endif
587
588#ifndef ECB_MEMORY_FENCE
589 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
590 #if __i386 || __i386__
591 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
592 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
593 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
594 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
595 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
596 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
597 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
598 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
599 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
600 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
601 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
602 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
603 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
604 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
606 #elif __sparc || __sparc__
607 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
608 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
610 #elif defined __s390__ || defined __s390x__
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
612 #elif defined __mips__
613 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
614 #elif defined __alpha__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
616 #elif defined __hppa__
617 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
618 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
619 #elif defined __ia64__
620 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
621 #endif
622 #endif
623#endif
624
625#ifndef ECB_MEMORY_FENCE
626 #if ECB_GCC_VERSION(4,7)
627 /* see comment below (stdatomic.h) about the C11 memory model. */
628 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
629
630 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
631 * without risking compile time errors with other compilers. We *could*
632 * define our own ecb_clang_has_feature, but I just can't be bothered to work
633 * around this shit time and again.
634 * #elif defined __clang && __has_feature (cxx_atomic)
635 * // see comment below (stdatomic.h) about the C11 memory model.
636 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
637 */
638
639 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
640 #define ECB_MEMORY_FENCE __sync_synchronize ()
641 #elif _MSC_VER >= 1400 /* VC++ 2005 */
642 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
643 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
644 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
645 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
646 #elif defined _WIN32
647 #include <WinNT.h>
648 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
649 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
650 #include <mbarrier.h>
651 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
652 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
653 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
654 #elif __xlC__
655 #define ECB_MEMORY_FENCE __sync ()
656 #endif
657#endif
658
659#ifndef ECB_MEMORY_FENCE
660 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
661 /* we assume that these memory fences work on all variables/all memory accesses, */
662 /* not just C11 atomics and atomic accesses */
663 #include <stdatomic.h>
664 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
665 /* any fence other than seq_cst, which isn't very efficient for us. */
666 /* Why that is, we don't know - either the C11 memory model is quite useless */
667 /* for most usages, or gcc and clang have a bug */
668 /* I *currently* lean towards the latter, and inefficiently implement */
669 /* all three of ecb's fences as a seq_cst fence */
670 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
671 #endif
672#endif
673
674#ifndef ECB_MEMORY_FENCE
675 #if !ECB_AVOID_PTHREADS
676 /*
677 * if you get undefined symbol references to pthread_mutex_lock,
678 * or failure to find pthread.h, then you should implement
679 * the ECB_MEMORY_FENCE operations for your cpu/compiler
680 * OR provide pthread.h and link against the posix thread library
681 * of your system.
682 */
683 #include <pthread.h>
684 #define ECB_NEEDS_PTHREADS 1
685 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
686
687 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
688 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
689 #endif
690#endif
691
692#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
693 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
694#endif
695
696#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
697 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
698#endif
699
700/*****************************************************************************/
701
702#if __cplusplus
703 #define ecb_inline static inline
704#elif ECB_GCC_VERSION(2,5)
705 #define ecb_inline static __inline__
706#elif ECB_C99
707 #define ecb_inline static inline
708#else
709 #define ecb_inline static
710#endif
711
712#if ECB_GCC_VERSION(3,3)
713 #define ecb_restrict __restrict__
714#elif ECB_C99
715 #define ecb_restrict restrict
716#else
717 #define ecb_restrict
718#endif
719
720typedef int ecb_bool;
721
722#define ECB_CONCAT_(a, b) a ## b
723#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
724#define ECB_STRINGIFY_(a) # a
725#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
726
727#define ecb_function_ ecb_inline
728
729#if ECB_GCC_VERSION(3,1)
730 #define ecb_attribute(attrlist) __attribute__(attrlist)
731 #define ecb_is_constant(expr) __builtin_constant_p (expr)
732 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
733 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
734#else
735 #define ecb_attribute(attrlist)
736 #define ecb_is_constant(expr) 0
737 #define ecb_expect(expr,value) (expr)
738 #define ecb_prefetch(addr,rw,locality)
739#endif
740
741/* no emulation for ecb_decltype */
742#if ECB_GCC_VERSION(4,5)
743 #define ecb_decltype(x) __decltype(x)
744#elif ECB_GCC_VERSION(3,0)
745 #define ecb_decltype(x) __typeof(x)
746#endif
747
748#define ecb_noinline ecb_attribute ((__noinline__))
749#define ecb_unused ecb_attribute ((__unused__))
750#define ecb_const ecb_attribute ((__const__))
751#define ecb_pure ecb_attribute ((__pure__))
752
753#if ECB_C11
754 #define ecb_noreturn _Noreturn
755#else
756 #define ecb_noreturn ecb_attribute ((__noreturn__))
757#endif
758
759#if ECB_GCC_VERSION(4,3)
760 #define ecb_artificial ecb_attribute ((__artificial__))
761 #define ecb_hot ecb_attribute ((__hot__))
762 #define ecb_cold ecb_attribute ((__cold__))
763#else
764 #define ecb_artificial
765 #define ecb_hot
766 #define ecb_cold
767#endif
768
769/* put around conditional expressions if you are very sure that the */
770/* expression is mostly true or mostly false. note that these return */
771/* booleans, not the expression. */
386#define expect_false(expr) expect ((expr) != 0, 0) 772#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 773#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
774/* for compatibility to the rest of the world */
775#define ecb_likely(expr) ecb_expect_true (expr)
776#define ecb_unlikely(expr) ecb_expect_false (expr)
777
778/* count trailing zero bits and count # of one bits */
779#if ECB_GCC_VERSION(3,4)
780 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
781 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
782 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
783 #define ecb_ctz32(x) __builtin_ctz (x)
784 #define ecb_ctz64(x) __builtin_ctzll (x)
785 #define ecb_popcount32(x) __builtin_popcount (x)
786 /* no popcountll */
787#else
788 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
789 ecb_function_ int
790 ecb_ctz32 (uint32_t x)
791 {
792 int r = 0;
793
794 x &= ~x + 1; /* this isolates the lowest bit */
795
796#if ECB_branchless_on_i386
797 r += !!(x & 0xaaaaaaaa) << 0;
798 r += !!(x & 0xcccccccc) << 1;
799 r += !!(x & 0xf0f0f0f0) << 2;
800 r += !!(x & 0xff00ff00) << 3;
801 r += !!(x & 0xffff0000) << 4;
802#else
803 if (x & 0xaaaaaaaa) r += 1;
804 if (x & 0xcccccccc) r += 2;
805 if (x & 0xf0f0f0f0) r += 4;
806 if (x & 0xff00ff00) r += 8;
807 if (x & 0xffff0000) r += 16;
808#endif
809
810 return r;
811 }
812
813 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
814 ecb_function_ int
815 ecb_ctz64 (uint64_t x)
816 {
817 int shift = x & 0xffffffffU ? 0 : 32;
818 return ecb_ctz32 (x >> shift) + shift;
819 }
820
821 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
822 ecb_function_ int
823 ecb_popcount32 (uint32_t x)
824 {
825 x -= (x >> 1) & 0x55555555;
826 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
827 x = ((x >> 4) + x) & 0x0f0f0f0f;
828 x *= 0x01010101;
829
830 return x >> 24;
831 }
832
833 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
834 ecb_function_ int ecb_ld32 (uint32_t x)
835 {
836 int r = 0;
837
838 if (x >> 16) { x >>= 16; r += 16; }
839 if (x >> 8) { x >>= 8; r += 8; }
840 if (x >> 4) { x >>= 4; r += 4; }
841 if (x >> 2) { x >>= 2; r += 2; }
842 if (x >> 1) { r += 1; }
843
844 return r;
845 }
846
847 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
848 ecb_function_ int ecb_ld64 (uint64_t x)
849 {
850 int r = 0;
851
852 if (x >> 32) { x >>= 32; r += 32; }
853
854 return r + ecb_ld32 (x);
855 }
856#endif
857
858ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
859ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
860ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
861ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
862
863ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
864ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
865{
866 return ( (x * 0x0802U & 0x22110U)
867 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
868}
869
870ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
871ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
872{
873 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
874 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
875 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
876 x = ( x >> 8 ) | ( x << 8);
877
878 return x;
879}
880
881ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
882ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
883{
884 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
885 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
886 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
887 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
888 x = ( x >> 16 ) | ( x << 16);
889
890 return x;
891}
892
893/* popcount64 is only available on 64 bit cpus as gcc builtin */
894/* so for this version we are lazy */
895ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
896ecb_function_ int
897ecb_popcount64 (uint64_t x)
898{
899 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
900}
901
902ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
903ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
904ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
905ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
906ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
907ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
908ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
909ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
910
911ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
912ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
913ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
914ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
915ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
916ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
917ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
918ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
919
920#if ECB_GCC_VERSION(4,3)
921 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
922 #define ecb_bswap32(x) __builtin_bswap32 (x)
923 #define ecb_bswap64(x) __builtin_bswap64 (x)
924#else
925 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
926 ecb_function_ uint16_t
927 ecb_bswap16 (uint16_t x)
928 {
929 return ecb_rotl16 (x, 8);
930 }
931
932 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
933 ecb_function_ uint32_t
934 ecb_bswap32 (uint32_t x)
935 {
936 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
937 }
938
939 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
940 ecb_function_ uint64_t
941 ecb_bswap64 (uint64_t x)
942 {
943 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
944 }
945#endif
946
947#if ECB_GCC_VERSION(4,5)
948 #define ecb_unreachable() __builtin_unreachable ()
949#else
950 /* this seems to work fine, but gcc always emits a warning for it :/ */
951 ecb_inline void ecb_unreachable (void) ecb_noreturn;
952 ecb_inline void ecb_unreachable (void) { }
953#endif
954
955/* try to tell the compiler that some condition is definitely true */
956#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
957
958ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
959ecb_inline unsigned char
960ecb_byteorder_helper (void)
961{
962 /* the union code still generates code under pressure in gcc, */
963 /* but less than using pointers, and always seems to */
964 /* successfully return a constant. */
965 /* the reason why we have this horrible preprocessor mess */
966 /* is to avoid it in all cases, at least on common architectures */
967 /* or when using a recent enough gcc version (>= 4.6) */
968#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
969 return 0x44;
970#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
971 return 0x44;
972#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
973 return 0x11;
974#else
975 union
976 {
977 uint32_t i;
978 uint8_t c;
979 } u = { 0x11223344 };
980 return u.c;
981#endif
982}
983
984ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
985ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
986ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
987ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
988
989#if ECB_GCC_VERSION(3,0) || ECB_C99
990 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
991#else
992 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
993#endif
994
995#if __cplusplus
996 template<typename T>
997 static inline T ecb_div_rd (T val, T div)
998 {
999 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1000 }
1001 template<typename T>
1002 static inline T ecb_div_ru (T val, T div)
1003 {
1004 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1005 }
1006#else
1007 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1008 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1009#endif
1010
1011#if ecb_cplusplus_does_not_suck
1012 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1013 template<typename T, int N>
1014 static inline int ecb_array_length (const T (&arr)[N])
1015 {
1016 return N;
1017 }
1018#else
1019 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1020#endif
1021
1022/*******************************************************************************/
1023/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1024
1025/* basically, everything uses "ieee pure-endian" floating point numbers */
1026/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1027#if 0 \
1028 || __i386 || __i386__ \
1029 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1030 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1031 || defined __arm__ && defined __ARM_EABI__ \
1032 || defined __s390__ || defined __s390x__ \
1033 || defined __mips__ \
1034 || defined __alpha__ \
1035 || defined __hppa__ \
1036 || defined __ia64__ \
1037 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1038 #define ECB_STDFP 1
1039 #include <string.h> /* for memcpy */
1040#else
1041 #define ECB_STDFP 0
1042 #include <math.h> /* for frexp*, ldexp* */
1043#endif
1044
1045#ifndef ECB_NO_LIBM
1046
1047 /* convert a float to ieee single/binary32 */
1048 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1049 ecb_function_ uint32_t
1050 ecb_float_to_binary32 (float x)
1051 {
1052 uint32_t r;
1053
1054 #if ECB_STDFP
1055 memcpy (&r, &x, 4);
1056 #else
1057 /* slow emulation, works for anything but -0 */
1058 uint32_t m;
1059 int e;
1060
1061 if (x == 0e0f ) return 0x00000000U;
1062 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1063 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1064 if (x != x ) return 0x7fbfffffU;
1065
1066 m = frexpf (x, &e) * 0x1000000U;
1067
1068 r = m & 0x80000000U;
1069
1070 if (r)
1071 m = -m;
1072
1073 if (e <= -126)
1074 {
1075 m &= 0xffffffU;
1076 m >>= (-125 - e);
1077 e = -126;
1078 }
1079
1080 r |= (e + 126) << 23;
1081 r |= m & 0x7fffffU;
1082 #endif
1083
1084 return r;
1085 }
1086
1087 /* converts an ieee single/binary32 to a float */
1088 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1089 ecb_function_ float
1090 ecb_binary32_to_float (uint32_t x)
1091 {
1092 float r;
1093
1094 #if ECB_STDFP
1095 memcpy (&r, &x, 4);
1096 #else
1097 /* emulation, only works for normals and subnormals and +0 */
1098 int neg = x >> 31;
1099 int e = (x >> 23) & 0xffU;
1100
1101 x &= 0x7fffffU;
1102
1103 if (e)
1104 x |= 0x800000U;
1105 else
1106 e = 1;
1107
1108 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1109 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1110
1111 r = neg ? -r : r;
1112 #endif
1113
1114 return r;
1115 }
1116
1117 /* convert a double to ieee double/binary64 */
1118 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1119 ecb_function_ uint64_t
1120 ecb_double_to_binary64 (double x)
1121 {
1122 uint64_t r;
1123
1124 #if ECB_STDFP
1125 memcpy (&r, &x, 8);
1126 #else
1127 /* slow emulation, works for anything but -0 */
1128 uint64_t m;
1129 int e;
1130
1131 if (x == 0e0 ) return 0x0000000000000000U;
1132 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1133 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1134 if (x != x ) return 0X7ff7ffffffffffffU;
1135
1136 m = frexp (x, &e) * 0x20000000000000U;
1137
1138 r = m & 0x8000000000000000;;
1139
1140 if (r)
1141 m = -m;
1142
1143 if (e <= -1022)
1144 {
1145 m &= 0x1fffffffffffffU;
1146 m >>= (-1021 - e);
1147 e = -1022;
1148 }
1149
1150 r |= ((uint64_t)(e + 1022)) << 52;
1151 r |= m & 0xfffffffffffffU;
1152 #endif
1153
1154 return r;
1155 }
1156
1157 /* converts an ieee double/binary64 to a double */
1158 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1159 ecb_function_ double
1160 ecb_binary64_to_double (uint64_t x)
1161 {
1162 double r;
1163
1164 #if ECB_STDFP
1165 memcpy (&r, &x, 8);
1166 #else
1167 /* emulation, only works for normals and subnormals and +0 */
1168 int neg = x >> 63;
1169 int e = (x >> 52) & 0x7ffU;
1170
1171 x &= 0xfffffffffffffU;
1172
1173 if (e)
1174 x |= 0x10000000000000U;
1175 else
1176 e = 1;
1177
1178 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1179 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1180
1181 r = neg ? -r : r;
1182 #endif
1183
1184 return r;
1185 }
1186
1187#endif
1188
1189#endif
1190
1191/* ECB.H END */
1192
1193#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1194/* if your architecture doesn't need memory fences, e.g. because it is
1195 * single-cpu/core, or if you use libev in a project that doesn't use libev
1196 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1197 * libev, in which cases the memory fences become nops.
1198 * alternatively, you can remove this #error and link against libpthread,
1199 * which will then provide the memory fences.
1200 */
1201# error "memory fences not defined for your architecture, please report"
1202#endif
1203
1204#ifndef ECB_MEMORY_FENCE
1205# define ECB_MEMORY_FENCE do { } while (0)
1206# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1207# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1208#endif
1209
1210#define expect_false(cond) ecb_expect_false (cond)
1211#define expect_true(cond) ecb_expect_true (cond)
1212#define noinline ecb_noinline
1213
388#define inline_size static inline 1214#define inline_size ecb_inline
389 1215
390#if EV_MINIMAL 1216#if EV_FEATURE_CODE
1217# define inline_speed ecb_inline
1218#else
391# define inline_speed static noinline 1219# define inline_speed static noinline
392#else
393# define inline_speed static inline
394#endif 1220#endif
395 1221
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1222#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 1223
398#if EV_MINPRI == EV_MAXPRI 1224#if EV_MINPRI == EV_MAXPRI
… …
411#define ev_active(w) ((W)(w))->active 1237#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 1238#define ev_at(w) ((WT)(w))->at
413 1239
414#if EV_USE_REALTIME 1240#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1241/* sig_atomic_t is used to avoid per-thread variables or locking but still */
416/* giving it a reasonably high chance of working on typical architetcures */ 1242/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1243static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 1244#endif
419 1245
420#if EV_USE_MONOTONIC 1246#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1247static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 1248#endif
423 1249
1250#ifndef EV_FD_TO_WIN32_HANDLE
1251# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1252#endif
1253#ifndef EV_WIN32_HANDLE_TO_FD
1254# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1255#endif
1256#ifndef EV_WIN32_CLOSE_FD
1257# define EV_WIN32_CLOSE_FD(fd) close (fd)
1258#endif
1259
424#ifdef _WIN32 1260#ifdef _WIN32
425# include "ev_win32.c" 1261# include "ev_win32.c"
426#endif 1262#endif
427 1263
428/*****************************************************************************/ 1264/*****************************************************************************/
429 1265
1266/* define a suitable floor function (only used by periodics atm) */
1267
1268#if EV_USE_FLOOR
1269# include <math.h>
1270# define ev_floor(v) floor (v)
1271#else
1272
1273#include <float.h>
1274
1275/* a floor() replacement function, should be independent of ev_tstamp type */
1276static ev_tstamp noinline
1277ev_floor (ev_tstamp v)
1278{
1279 /* the choice of shift factor is not terribly important */
1280#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1281 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1282#else
1283 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1284#endif
1285
1286 /* argument too large for an unsigned long? */
1287 if (expect_false (v >= shift))
1288 {
1289 ev_tstamp f;
1290
1291 if (v == v - 1.)
1292 return v; /* very large number */
1293
1294 f = shift * ev_floor (v * (1. / shift));
1295 return f + ev_floor (v - f);
1296 }
1297
1298 /* special treatment for negative args? */
1299 if (expect_false (v < 0.))
1300 {
1301 ev_tstamp f = -ev_floor (-v);
1302
1303 return f - (f == v ? 0 : 1);
1304 }
1305
1306 /* fits into an unsigned long */
1307 return (unsigned long)v;
1308}
1309
1310#endif
1311
1312/*****************************************************************************/
1313
1314#ifdef __linux
1315# include <sys/utsname.h>
1316#endif
1317
1318static unsigned int noinline ecb_cold
1319ev_linux_version (void)
1320{
1321#ifdef __linux
1322 unsigned int v = 0;
1323 struct utsname buf;
1324 int i;
1325 char *p = buf.release;
1326
1327 if (uname (&buf))
1328 return 0;
1329
1330 for (i = 3+1; --i; )
1331 {
1332 unsigned int c = 0;
1333
1334 for (;;)
1335 {
1336 if (*p >= '0' && *p <= '9')
1337 c = c * 10 + *p++ - '0';
1338 else
1339 {
1340 p += *p == '.';
1341 break;
1342 }
1343 }
1344
1345 v = (v << 8) | c;
1346 }
1347
1348 return v;
1349#else
1350 return 0;
1351#endif
1352}
1353
1354/*****************************************************************************/
1355
1356#if EV_AVOID_STDIO
1357static void noinline ecb_cold
1358ev_printerr (const char *msg)
1359{
1360 write (STDERR_FILENO, msg, strlen (msg));
1361}
1362#endif
1363
430static void (*syserr_cb)(const char *msg); 1364static void (*syserr_cb)(const char *msg) EV_THROW;
431 1365
432void 1366void ecb_cold
433ev_set_syserr_cb (void (*cb)(const char *msg)) 1367ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
434{ 1368{
435 syserr_cb = cb; 1369 syserr_cb = cb;
436} 1370}
437 1371
438static void noinline 1372static void noinline ecb_cold
439ev_syserr (const char *msg) 1373ev_syserr (const char *msg)
440{ 1374{
441 if (!msg) 1375 if (!msg)
442 msg = "(libev) system error"; 1376 msg = "(libev) system error";
443 1377
444 if (syserr_cb) 1378 if (syserr_cb)
445 syserr_cb (msg); 1379 syserr_cb (msg);
446 else 1380 else
447 { 1381 {
1382#if EV_AVOID_STDIO
1383 ev_printerr (msg);
1384 ev_printerr (": ");
1385 ev_printerr (strerror (errno));
1386 ev_printerr ("\n");
1387#else
448 perror (msg); 1388 perror (msg);
1389#endif
449 abort (); 1390 abort ();
450 } 1391 }
451} 1392}
452 1393
453static void * 1394static void *
454ev_realloc_emul (void *ptr, long size) 1395ev_realloc_emul (void *ptr, long size) EV_THROW
455{ 1396{
456 /* some systems, notably openbsd and darwin, fail to properly 1397 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and 1398 * implement realloc (x, 0) (as required by both ansi c-89 and
458 * the single unix specification, so work around them here. 1399 * the single unix specification, so work around them here.
1400 * recently, also (at least) fedora and debian started breaking it,
1401 * despite documenting it otherwise.
459 */ 1402 */
460 1403
461 if (size) 1404 if (size)
462 return realloc (ptr, size); 1405 return realloc (ptr, size);
463 1406
464 free (ptr); 1407 free (ptr);
465 return 0; 1408 return 0;
466} 1409}
467 1410
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1411static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
469 1412
470void 1413void ecb_cold
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 1414ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
472{ 1415{
473 alloc = cb; 1416 alloc = cb;
474} 1417}
475 1418
476inline_speed void * 1419inline_speed void *
… …
478{ 1421{
479 ptr = alloc (ptr, size); 1422 ptr = alloc (ptr, size);
480 1423
481 if (!ptr && size) 1424 if (!ptr && size)
482 { 1425 {
1426#if EV_AVOID_STDIO
1427 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1428#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1429 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1430#endif
484 abort (); 1431 abort ();
485 } 1432 }
486 1433
487 return ptr; 1434 return ptr;
488} 1435}
… …
504 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1451 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
505 unsigned char unused; 1452 unsigned char unused;
506#if EV_USE_EPOLL 1453#if EV_USE_EPOLL
507 unsigned int egen; /* generation counter to counter epoll bugs */ 1454 unsigned int egen; /* generation counter to counter epoll bugs */
508#endif 1455#endif
509#if EV_SELECT_IS_WINSOCKET 1456#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
510 SOCKET handle; 1457 SOCKET handle;
1458#endif
1459#if EV_USE_IOCP
1460 OVERLAPPED or, ow;
511#endif 1461#endif
512} ANFD; 1462} ANFD;
513 1463
514/* stores the pending event set for a given watcher */ 1464/* stores the pending event set for a given watcher */
515typedef struct 1465typedef struct
… …
557 #undef VAR 1507 #undef VAR
558 }; 1508 };
559 #include "ev_wrap.h" 1509 #include "ev_wrap.h"
560 1510
561 static struct ev_loop default_loop_struct; 1511 static struct ev_loop default_loop_struct;
562 struct ev_loop *ev_default_loop_ptr; 1512 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
563 1513
564#else 1514#else
565 1515
566 ev_tstamp ev_rt_now; 1516 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
567 #define VAR(name,decl) static decl; 1517 #define VAR(name,decl) static decl;
568 #include "ev_vars.h" 1518 #include "ev_vars.h"
569 #undef VAR 1519 #undef VAR
570 1520
571 static int ev_default_loop_ptr; 1521 static int ev_default_loop_ptr;
572 1522
573#endif 1523#endif
574 1524
575#if EV_MINIMAL < 2 1525#if EV_FEATURE_API
576# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 1526# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
577# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 1527# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
578# define EV_INVOKE_PENDING invoke_cb (EV_A) 1528# define EV_INVOKE_PENDING invoke_cb (EV_A)
579#else 1529#else
580# define EV_RELEASE_CB (void)0 1530# define EV_RELEASE_CB (void)0
581# define EV_ACQUIRE_CB (void)0 1531# define EV_ACQUIRE_CB (void)0
582# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1532# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
583#endif 1533#endif
584 1534
585#define EVUNLOOP_RECURSE 0x80 1535#define EVBREAK_RECURSE 0x80
586 1536
587/*****************************************************************************/ 1537/*****************************************************************************/
588 1538
589#ifndef EV_HAVE_EV_TIME 1539#ifndef EV_HAVE_EV_TIME
590ev_tstamp 1540ev_tstamp
591ev_time (void) 1541ev_time (void) EV_THROW
592{ 1542{
593#if EV_USE_REALTIME 1543#if EV_USE_REALTIME
594 if (expect_true (have_realtime)) 1544 if (expect_true (have_realtime))
595 { 1545 {
596 struct timespec ts; 1546 struct timespec ts;
… …
620 return ev_time (); 1570 return ev_time ();
621} 1571}
622 1572
623#if EV_MULTIPLICITY 1573#if EV_MULTIPLICITY
624ev_tstamp 1574ev_tstamp
625ev_now (EV_P) 1575ev_now (EV_P) EV_THROW
626{ 1576{
627 return ev_rt_now; 1577 return ev_rt_now;
628} 1578}
629#endif 1579#endif
630 1580
631void 1581void
632ev_sleep (ev_tstamp delay) 1582ev_sleep (ev_tstamp delay) EV_THROW
633{ 1583{
634 if (delay > 0.) 1584 if (delay > 0.)
635 { 1585 {
636#if EV_USE_NANOSLEEP 1586#if EV_USE_NANOSLEEP
637 struct timespec ts; 1587 struct timespec ts;
638 1588
639 ts.tv_sec = (time_t)delay; 1589 EV_TS_SET (ts, delay);
640 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
641
642 nanosleep (&ts, 0); 1590 nanosleep (&ts, 0);
643#elif defined(_WIN32) 1591#elif defined _WIN32
644 Sleep ((unsigned long)(delay * 1e3)); 1592 Sleep ((unsigned long)(delay * 1e3));
645#else 1593#else
646 struct timeval tv; 1594 struct timeval tv;
647 1595
648 tv.tv_sec = (time_t)delay;
649 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
650
651 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1596 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
652 /* something not guaranteed by newer posix versions, but guaranteed */ 1597 /* something not guaranteed by newer posix versions, but guaranteed */
653 /* by older ones */ 1598 /* by older ones */
1599 EV_TV_SET (tv, delay);
654 select (0, 0, 0, 0, &tv); 1600 select (0, 0, 0, 0, &tv);
655#endif 1601#endif
656 } 1602 }
657} 1603}
658 1604
659/*****************************************************************************/ 1605/*****************************************************************************/
660 1606
661#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1607#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
662 1608
663/* find a suitable new size for the given array, */ 1609/* find a suitable new size for the given array, */
664/* hopefully by rounding to a ncie-to-malloc size */ 1610/* hopefully by rounding to a nice-to-malloc size */
665inline_size int 1611inline_size int
666array_nextsize (int elem, int cur, int cnt) 1612array_nextsize (int elem, int cur, int cnt)
667{ 1613{
668 int ncur = cur + 1; 1614 int ncur = cur + 1;
669 1615
670 do 1616 do
671 ncur <<= 1; 1617 ncur <<= 1;
672 while (cnt > ncur); 1618 while (cnt > ncur);
673 1619
674 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1620 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
675 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1621 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
676 { 1622 {
677 ncur *= elem; 1623 ncur *= elem;
678 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1624 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
679 ncur = ncur - sizeof (void *) * 4; 1625 ncur = ncur - sizeof (void *) * 4;
… …
681 } 1627 }
682 1628
683 return ncur; 1629 return ncur;
684} 1630}
685 1631
686static noinline void * 1632static void * noinline ecb_cold
687array_realloc (int elem, void *base, int *cur, int cnt) 1633array_realloc (int elem, void *base, int *cur, int cnt)
688{ 1634{
689 *cur = array_nextsize (elem, *cur, cnt); 1635 *cur = array_nextsize (elem, *cur, cnt);
690 return ev_realloc (base, elem * *cur); 1636 return ev_realloc (base, elem * *cur);
691} 1637}
… …
694 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1640 memset ((void *)(base), 0, sizeof (*(base)) * (count))
695 1641
696#define array_needsize(type,base,cur,cnt,init) \ 1642#define array_needsize(type,base,cur,cnt,init) \
697 if (expect_false ((cnt) > (cur))) \ 1643 if (expect_false ((cnt) > (cur))) \
698 { \ 1644 { \
699 int ocur_ = (cur); \ 1645 int ecb_unused ocur_ = (cur); \
700 (base) = (type *)array_realloc \ 1646 (base) = (type *)array_realloc \
701 (sizeof (type), (base), &(cur), (cnt)); \ 1647 (sizeof (type), (base), &(cur), (cnt)); \
702 init ((base) + (ocur_), (cur) - ocur_); \ 1648 init ((base) + (ocur_), (cur) - ocur_); \
703 } 1649 }
704 1650
… …
722pendingcb (EV_P_ ev_prepare *w, int revents) 1668pendingcb (EV_P_ ev_prepare *w, int revents)
723{ 1669{
724} 1670}
725 1671
726void noinline 1672void noinline
727ev_feed_event (EV_P_ void *w, int revents) 1673ev_feed_event (EV_P_ void *w, int revents) EV_THROW
728{ 1674{
729 W w_ = (W)w; 1675 W w_ = (W)w;
730 int pri = ABSPRI (w_); 1676 int pri = ABSPRI (w_);
731 1677
732 if (expect_false (w_->pending)) 1678 if (expect_false (w_->pending))
… …
736 w_->pending = ++pendingcnt [pri]; 1682 w_->pending = ++pendingcnt [pri];
737 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1683 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
738 pendings [pri][w_->pending - 1].w = w_; 1684 pendings [pri][w_->pending - 1].w = w_;
739 pendings [pri][w_->pending - 1].events = revents; 1685 pendings [pri][w_->pending - 1].events = revents;
740 } 1686 }
1687
1688 pendingpri = NUMPRI - 1;
741} 1689}
742 1690
743inline_speed void 1691inline_speed void
744feed_reverse (EV_P_ W w) 1692feed_reverse (EV_P_ W w)
745{ 1693{
… …
765} 1713}
766 1714
767/*****************************************************************************/ 1715/*****************************************************************************/
768 1716
769inline_speed void 1717inline_speed void
770fd_event_nc (EV_P_ int fd, int revents) 1718fd_event_nocheck (EV_P_ int fd, int revents)
771{ 1719{
772 ANFD *anfd = anfds + fd; 1720 ANFD *anfd = anfds + fd;
773 ev_io *w; 1721 ev_io *w;
774 1722
775 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1723 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
787fd_event (EV_P_ int fd, int revents) 1735fd_event (EV_P_ int fd, int revents)
788{ 1736{
789 ANFD *anfd = anfds + fd; 1737 ANFD *anfd = anfds + fd;
790 1738
791 if (expect_true (!anfd->reify)) 1739 if (expect_true (!anfd->reify))
792 fd_event_nc (EV_A_ fd, revents); 1740 fd_event_nocheck (EV_A_ fd, revents);
793} 1741}
794 1742
795void 1743void
796ev_feed_fd_event (EV_P_ int fd, int revents) 1744ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
797{ 1745{
798 if (fd >= 0 && fd < anfdmax) 1746 if (fd >= 0 && fd < anfdmax)
799 fd_event_nc (EV_A_ fd, revents); 1747 fd_event_nocheck (EV_A_ fd, revents);
800} 1748}
801 1749
802/* make sure the external fd watch events are in-sync */ 1750/* make sure the external fd watch events are in-sync */
803/* with the kernel/libev internal state */ 1751/* with the kernel/libev internal state */
804inline_size void 1752inline_size void
805fd_reify (EV_P) 1753fd_reify (EV_P)
806{ 1754{
807 int i; 1755 int i;
808 1756
1757#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1758 for (i = 0; i < fdchangecnt; ++i)
1759 {
1760 int fd = fdchanges [i];
1761 ANFD *anfd = anfds + fd;
1762
1763 if (anfd->reify & EV__IOFDSET && anfd->head)
1764 {
1765 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1766
1767 if (handle != anfd->handle)
1768 {
1769 unsigned long arg;
1770
1771 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1772
1773 /* handle changed, but fd didn't - we need to do it in two steps */
1774 backend_modify (EV_A_ fd, anfd->events, 0);
1775 anfd->events = 0;
1776 anfd->handle = handle;
1777 }
1778 }
1779 }
1780#endif
1781
809 for (i = 0; i < fdchangecnt; ++i) 1782 for (i = 0; i < fdchangecnt; ++i)
810 { 1783 {
811 int fd = fdchanges [i]; 1784 int fd = fdchanges [i];
812 ANFD *anfd = anfds + fd; 1785 ANFD *anfd = anfds + fd;
813 ev_io *w; 1786 ev_io *w;
814 1787
815 unsigned char events = 0; 1788 unsigned char o_events = anfd->events;
1789 unsigned char o_reify = anfd->reify;
816 1790
817 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1791 anfd->reify = 0;
818 events |= (unsigned char)w->events;
819 1792
820#if EV_SELECT_IS_WINSOCKET 1793 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
821 if (events)
822 { 1794 {
823 unsigned long arg; 1795 anfd->events = 0;
824 #ifdef EV_FD_TO_WIN32_HANDLE 1796
825 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1797 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
826 #else 1798 anfd->events |= (unsigned char)w->events;
827 anfd->handle = _get_osfhandle (fd); 1799
828 #endif 1800 if (o_events != anfd->events)
829 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1801 o_reify = EV__IOFDSET; /* actually |= */
830 } 1802 }
831#endif
832 1803
833 { 1804 if (o_reify & EV__IOFDSET)
834 unsigned char o_events = anfd->events;
835 unsigned char o_reify = anfd->reify;
836
837 anfd->reify = 0;
838 anfd->events = events;
839
840 if (o_events != events || o_reify & EV__IOFDSET)
841 backend_modify (EV_A_ fd, o_events, events); 1805 backend_modify (EV_A_ fd, o_events, anfd->events);
842 }
843 } 1806 }
844 1807
845 fdchangecnt = 0; 1808 fdchangecnt = 0;
846} 1809}
847 1810
… …
859 fdchanges [fdchangecnt - 1] = fd; 1822 fdchanges [fdchangecnt - 1] = fd;
860 } 1823 }
861} 1824}
862 1825
863/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1826/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
864inline_speed void 1827inline_speed void ecb_cold
865fd_kill (EV_P_ int fd) 1828fd_kill (EV_P_ int fd)
866{ 1829{
867 ev_io *w; 1830 ev_io *w;
868 1831
869 while ((w = (ev_io *)anfds [fd].head)) 1832 while ((w = (ev_io *)anfds [fd].head))
… …
871 ev_io_stop (EV_A_ w); 1834 ev_io_stop (EV_A_ w);
872 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1835 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
873 } 1836 }
874} 1837}
875 1838
876/* check whether the given fd is atcually valid, for error recovery */ 1839/* check whether the given fd is actually valid, for error recovery */
877inline_size int 1840inline_size int ecb_cold
878fd_valid (int fd) 1841fd_valid (int fd)
879{ 1842{
880#ifdef _WIN32 1843#ifdef _WIN32
881 return _get_osfhandle (fd) != -1; 1844 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
882#else 1845#else
883 return fcntl (fd, F_GETFD) != -1; 1846 return fcntl (fd, F_GETFD) != -1;
884#endif 1847#endif
885} 1848}
886 1849
887/* called on EBADF to verify fds */ 1850/* called on EBADF to verify fds */
888static void noinline 1851static void noinline ecb_cold
889fd_ebadf (EV_P) 1852fd_ebadf (EV_P)
890{ 1853{
891 int fd; 1854 int fd;
892 1855
893 for (fd = 0; fd < anfdmax; ++fd) 1856 for (fd = 0; fd < anfdmax; ++fd)
… …
895 if (!fd_valid (fd) && errno == EBADF) 1858 if (!fd_valid (fd) && errno == EBADF)
896 fd_kill (EV_A_ fd); 1859 fd_kill (EV_A_ fd);
897} 1860}
898 1861
899/* called on ENOMEM in select/poll to kill some fds and retry */ 1862/* called on ENOMEM in select/poll to kill some fds and retry */
900static void noinline 1863static void noinline ecb_cold
901fd_enomem (EV_P) 1864fd_enomem (EV_P)
902{ 1865{
903 int fd; 1866 int fd;
904 1867
905 for (fd = anfdmax; fd--; ) 1868 for (fd = anfdmax; fd--; )
906 if (anfds [fd].events) 1869 if (anfds [fd].events)
907 { 1870 {
908 fd_kill (EV_A_ fd); 1871 fd_kill (EV_A_ fd);
909 return; 1872 break;
910 } 1873 }
911} 1874}
912 1875
913/* usually called after fork if backend needs to re-arm all fds from scratch */ 1876/* usually called after fork if backend needs to re-arm all fds from scratch */
914static void noinline 1877static void noinline
… …
923 anfds [fd].emask = 0; 1886 anfds [fd].emask = 0;
924 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1887 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
925 } 1888 }
926} 1889}
927 1890
1891/* used to prepare libev internal fd's */
1892/* this is not fork-safe */
1893inline_speed void
1894fd_intern (int fd)
1895{
1896#ifdef _WIN32
1897 unsigned long arg = 1;
1898 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1899#else
1900 fcntl (fd, F_SETFD, FD_CLOEXEC);
1901 fcntl (fd, F_SETFL, O_NONBLOCK);
1902#endif
1903}
1904
928/*****************************************************************************/ 1905/*****************************************************************************/
929 1906
930/* 1907/*
931 * the heap functions want a real array index. array index 0 uis guaranteed to not 1908 * the heap functions want a real array index. array index 0 is guaranteed to not
932 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1909 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
933 * the branching factor of the d-tree. 1910 * the branching factor of the d-tree.
934 */ 1911 */
935 1912
936/* 1913/*
… …
1004 1981
1005 for (;;) 1982 for (;;)
1006 { 1983 {
1007 int c = k << 1; 1984 int c = k << 1;
1008 1985
1009 if (c > N + HEAP0 - 1) 1986 if (c >= N + HEAP0)
1010 break; 1987 break;
1011 1988
1012 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1989 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1013 ? 1 : 0; 1990 ? 1 : 0;
1014 1991
… …
1050 2027
1051/* move an element suitably so it is in a correct place */ 2028/* move an element suitably so it is in a correct place */
1052inline_size void 2029inline_size void
1053adjustheap (ANHE *heap, int N, int k) 2030adjustheap (ANHE *heap, int N, int k)
1054{ 2031{
1055 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2032 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1056 upheap (heap, k); 2033 upheap (heap, k);
1057 else 2034 else
1058 downheap (heap, N, k); 2035 downheap (heap, N, k);
1059} 2036}
1060 2037
… …
1073/*****************************************************************************/ 2050/*****************************************************************************/
1074 2051
1075/* associate signal watchers to a signal signal */ 2052/* associate signal watchers to a signal signal */
1076typedef struct 2053typedef struct
1077{ 2054{
2055 EV_ATOMIC_T pending;
2056#if EV_MULTIPLICITY
2057 EV_P;
2058#endif
1078 WL head; 2059 WL head;
1079 EV_ATOMIC_T gotsig;
1080} ANSIG; 2060} ANSIG;
1081 2061
1082static ANSIG *signals; 2062static ANSIG signals [EV_NSIG - 1];
1083static int signalmax;
1084
1085static EV_ATOMIC_T gotsig;
1086 2063
1087/*****************************************************************************/ 2064/*****************************************************************************/
1088 2065
1089/* used to prepare libev internal fd's */ 2066#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1090/* this is not fork-safe */ 2067
2068static void noinline ecb_cold
2069evpipe_init (EV_P)
2070{
2071 if (!ev_is_active (&pipe_w))
2072 {
2073 int fds [2];
2074
2075# if EV_USE_EVENTFD
2076 fds [0] = -1;
2077 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2078 if (fds [1] < 0 && errno == EINVAL)
2079 fds [1] = eventfd (0, 0);
2080
2081 if (fds [1] < 0)
2082# endif
2083 {
2084 while (pipe (fds))
2085 ev_syserr ("(libev) error creating signal/async pipe");
2086
2087 fd_intern (fds [0]);
2088 }
2089
2090 fd_intern (fds [1]);
2091
2092 evpipe [0] = fds [0];
2093
2094 if (evpipe [1] < 0)
2095 evpipe [1] = fds [1]; /* first call, set write fd */
2096 else
2097 {
2098 /* on subsequent calls, do not change evpipe [1] */
2099 /* so that evpipe_write can always rely on its value. */
2100 /* this branch does not do anything sensible on windows, */
2101 /* so must not be executed on windows */
2102
2103 dup2 (fds [1], evpipe [1]);
2104 close (fds [1]);
2105 }
2106
2107 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2108 ev_io_start (EV_A_ &pipe_w);
2109 ev_unref (EV_A); /* watcher should not keep loop alive */
2110 }
2111}
2112
1091inline_speed void 2113inline_speed void
1092fd_intern (int fd) 2114evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1093{ 2115{
1094#ifdef _WIN32 2116 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1095 unsigned long arg = 1;
1096 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1097#else
1098 fcntl (fd, F_SETFD, FD_CLOEXEC);
1099 fcntl (fd, F_SETFL, O_NONBLOCK);
1100#endif
1101}
1102 2117
1103static void noinline 2118 if (expect_true (*flag))
1104evpipe_init (EV_P) 2119 return;
1105{ 2120
1106 if (!ev_is_active (&pipe_w)) 2121 *flag = 1;
2122 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2123
2124 pipe_write_skipped = 1;
2125
2126 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2127
2128 if (pipe_write_wanted)
1107 { 2129 {
2130 int old_errno;
2131
2132 pipe_write_skipped = 0;
2133 ECB_MEMORY_FENCE_RELEASE;
2134
2135 old_errno = errno; /* save errno because write will clobber it */
2136
1108#if EV_USE_EVENTFD 2137#if EV_USE_EVENTFD
1109 if ((evfd = eventfd (0, 0)) >= 0) 2138 if (evpipe [0] < 0)
1110 { 2139 {
1111 evpipe [0] = -1; 2140 uint64_t counter = 1;
1112 fd_intern (evfd); 2141 write (evpipe [1], &counter, sizeof (uint64_t));
1113 ev_io_set (&pipe_w, evfd, EV_READ);
1114 } 2142 }
1115 else 2143 else
1116#endif 2144#endif
1117 { 2145 {
1118 while (pipe (evpipe)) 2146#ifdef _WIN32
1119 ev_syserr ("(libev) error creating signal/async pipe"); 2147 WSABUF buf;
1120 2148 DWORD sent;
1121 fd_intern (evpipe [0]); 2149 buf.buf = &buf;
1122 fd_intern (evpipe [1]); 2150 buf.len = 1;
1123 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2151 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2152#else
2153 write (evpipe [1], &(evpipe [1]), 1);
2154#endif
1124 } 2155 }
1125
1126 ev_io_start (EV_A_ &pipe_w);
1127 ev_unref (EV_A); /* watcher should not keep loop alive */
1128 }
1129}
1130
1131inline_size void
1132evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1133{
1134 if (!*flag)
1135 {
1136 int old_errno = errno; /* save errno because write might clobber it */
1137
1138 *flag = 1;
1139
1140#if EV_USE_EVENTFD
1141 if (evfd >= 0)
1142 {
1143 uint64_t counter = 1;
1144 write (evfd, &counter, sizeof (uint64_t));
1145 }
1146 else
1147#endif
1148 write (evpipe [1], &old_errno, 1);
1149 2156
1150 errno = old_errno; 2157 errno = old_errno;
1151 } 2158 }
1152} 2159}
1153 2160
1154/* called whenever the libev signal pipe */ 2161/* called whenever the libev signal pipe */
1155/* got some events (signal, async) */ 2162/* got some events (signal, async) */
1156static void 2163static void
1157pipecb (EV_P_ ev_io *iow, int revents) 2164pipecb (EV_P_ ev_io *iow, int revents)
1158{ 2165{
2166 int i;
2167
2168 if (revents & EV_READ)
2169 {
1159#if EV_USE_EVENTFD 2170#if EV_USE_EVENTFD
1160 if (evfd >= 0) 2171 if (evpipe [0] < 0)
1161 { 2172 {
1162 uint64_t counter; 2173 uint64_t counter;
1163 read (evfd, &counter, sizeof (uint64_t)); 2174 read (evpipe [1], &counter, sizeof (uint64_t));
1164 } 2175 }
1165 else 2176 else
1166#endif 2177#endif
1167 { 2178 {
1168 char dummy; 2179 char dummy[4];
2180#ifdef _WIN32
2181 WSABUF buf;
2182 DWORD recvd;
2183 DWORD flags = 0;
2184 buf.buf = dummy;
2185 buf.len = sizeof (dummy);
2186 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2187#else
1169 read (evpipe [0], &dummy, 1); 2188 read (evpipe [0], &dummy, sizeof (dummy));
2189#endif
2190 }
2191 }
2192
2193 pipe_write_skipped = 0;
2194
2195 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2196
2197#if EV_SIGNAL_ENABLE
2198 if (sig_pending)
1170 } 2199 {
2200 sig_pending = 0;
1171 2201
1172 if (gotsig && ev_is_default_loop (EV_A)) 2202 ECB_MEMORY_FENCE;
1173 {
1174 int signum;
1175 gotsig = 0;
1176 2203
1177 for (signum = signalmax; signum--; ) 2204 for (i = EV_NSIG - 1; i--; )
1178 if (signals [signum].gotsig) 2205 if (expect_false (signals [i].pending))
1179 ev_feed_signal_event (EV_A_ signum + 1); 2206 ev_feed_signal_event (EV_A_ i + 1);
1180 } 2207 }
2208#endif
1181 2209
1182#if EV_ASYNC_ENABLE 2210#if EV_ASYNC_ENABLE
1183 if (gotasync) 2211 if (async_pending)
1184 { 2212 {
1185 int i; 2213 async_pending = 0;
1186 gotasync = 0; 2214
2215 ECB_MEMORY_FENCE;
1187 2216
1188 for (i = asynccnt; i--; ) 2217 for (i = asynccnt; i--; )
1189 if (asyncs [i]->sent) 2218 if (asyncs [i]->sent)
1190 { 2219 {
1191 asyncs [i]->sent = 0; 2220 asyncs [i]->sent = 0;
2221 ECB_MEMORY_FENCE_RELEASE;
1192 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2222 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1193 } 2223 }
1194 } 2224 }
1195#endif 2225#endif
1196} 2226}
1197 2227
1198/*****************************************************************************/ 2228/*****************************************************************************/
1199 2229
2230void
2231ev_feed_signal (int signum) EV_THROW
2232{
2233#if EV_MULTIPLICITY
2234 ECB_MEMORY_FENCE_ACQUIRE;
2235 EV_P = signals [signum - 1].loop;
2236
2237 if (!EV_A)
2238 return;
2239#endif
2240
2241 signals [signum - 1].pending = 1;
2242 evpipe_write (EV_A_ &sig_pending);
2243}
2244
1200static void 2245static void
1201ev_sighandler (int signum) 2246ev_sighandler (int signum)
1202{ 2247{
2248#ifdef _WIN32
2249 signal (signum, ev_sighandler);
2250#endif
2251
2252 ev_feed_signal (signum);
2253}
2254
2255void noinline
2256ev_feed_signal_event (EV_P_ int signum) EV_THROW
2257{
2258 WL w;
2259
2260 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2261 return;
2262
2263 --signum;
2264
1203#if EV_MULTIPLICITY 2265#if EV_MULTIPLICITY
1204 struct ev_loop *loop = &default_loop_struct; 2266 /* it is permissible to try to feed a signal to the wrong loop */
1205#endif 2267 /* or, likely more useful, feeding a signal nobody is waiting for */
1206 2268
1207#if _WIN32 2269 if (expect_false (signals [signum].loop != EV_A))
1208 signal (signum, ev_sighandler);
1209#endif
1210
1211 signals [signum - 1].gotsig = 1;
1212 evpipe_write (EV_A_ &gotsig);
1213}
1214
1215void noinline
1216ev_feed_signal_event (EV_P_ int signum)
1217{
1218 WL w;
1219
1220#if EV_MULTIPLICITY
1221 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1222#endif
1223
1224 --signum;
1225
1226 if (signum < 0 || signum >= signalmax)
1227 return; 2270 return;
2271#endif
1228 2272
1229 signals [signum].gotsig = 0; 2273 signals [signum].pending = 0;
2274 ECB_MEMORY_FENCE_RELEASE;
1230 2275
1231 for (w = signals [signum].head; w; w = w->next) 2276 for (w = signals [signum].head; w; w = w->next)
1232 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2277 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1233} 2278}
1234 2279
2280#if EV_USE_SIGNALFD
2281static void
2282sigfdcb (EV_P_ ev_io *iow, int revents)
2283{
2284 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2285
2286 for (;;)
2287 {
2288 ssize_t res = read (sigfd, si, sizeof (si));
2289
2290 /* not ISO-C, as res might be -1, but works with SuS */
2291 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2292 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2293
2294 if (res < (ssize_t)sizeof (si))
2295 break;
2296 }
2297}
2298#endif
2299
2300#endif
2301
1235/*****************************************************************************/ 2302/*****************************************************************************/
1236 2303
2304#if EV_CHILD_ENABLE
1237static WL childs [EV_PID_HASHSIZE]; 2305static WL childs [EV_PID_HASHSIZE];
1238
1239#ifndef _WIN32
1240 2306
1241static ev_signal childev; 2307static ev_signal childev;
1242 2308
1243#ifndef WIFCONTINUED 2309#ifndef WIFCONTINUED
1244# define WIFCONTINUED(status) 0 2310# define WIFCONTINUED(status) 0
… …
1249child_reap (EV_P_ int chain, int pid, int status) 2315child_reap (EV_P_ int chain, int pid, int status)
1250{ 2316{
1251 ev_child *w; 2317 ev_child *w;
1252 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2318 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1253 2319
1254 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2320 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1255 { 2321 {
1256 if ((w->pid == pid || !w->pid) 2322 if ((w->pid == pid || !w->pid)
1257 && (!traced || (w->flags & 1))) 2323 && (!traced || (w->flags & 1)))
1258 { 2324 {
1259 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2325 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1284 /* make sure we are called again until all children have been reaped */ 2350 /* make sure we are called again until all children have been reaped */
1285 /* we need to do it this way so that the callback gets called before we continue */ 2351 /* we need to do it this way so that the callback gets called before we continue */
1286 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2352 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1287 2353
1288 child_reap (EV_A_ pid, pid, status); 2354 child_reap (EV_A_ pid, pid, status);
1289 if (EV_PID_HASHSIZE > 1) 2355 if ((EV_PID_HASHSIZE) > 1)
1290 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2356 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1291} 2357}
1292 2358
1293#endif 2359#endif
1294 2360
1295/*****************************************************************************/ 2361/*****************************************************************************/
1296 2362
2363#if EV_USE_IOCP
2364# include "ev_iocp.c"
2365#endif
1297#if EV_USE_PORT 2366#if EV_USE_PORT
1298# include "ev_port.c" 2367# include "ev_port.c"
1299#endif 2368#endif
1300#if EV_USE_KQUEUE 2369#if EV_USE_KQUEUE
1301# include "ev_kqueue.c" 2370# include "ev_kqueue.c"
… …
1308#endif 2377#endif
1309#if EV_USE_SELECT 2378#if EV_USE_SELECT
1310# include "ev_select.c" 2379# include "ev_select.c"
1311#endif 2380#endif
1312 2381
1313int 2382int ecb_cold
1314ev_version_major (void) 2383ev_version_major (void) EV_THROW
1315{ 2384{
1316 return EV_VERSION_MAJOR; 2385 return EV_VERSION_MAJOR;
1317} 2386}
1318 2387
1319int 2388int ecb_cold
1320ev_version_minor (void) 2389ev_version_minor (void) EV_THROW
1321{ 2390{
1322 return EV_VERSION_MINOR; 2391 return EV_VERSION_MINOR;
1323} 2392}
1324 2393
1325/* return true if we are running with elevated privileges and should ignore env variables */ 2394/* return true if we are running with elevated privileges and should ignore env variables */
1326int inline_size 2395int inline_size ecb_cold
1327enable_secure (void) 2396enable_secure (void)
1328{ 2397{
1329#ifdef _WIN32 2398#ifdef _WIN32
1330 return 0; 2399 return 0;
1331#else 2400#else
1332 return getuid () != geteuid () 2401 return getuid () != geteuid ()
1333 || getgid () != getegid (); 2402 || getgid () != getegid ();
1334#endif 2403#endif
1335} 2404}
1336 2405
1337unsigned int 2406unsigned int ecb_cold
1338ev_supported_backends (void) 2407ev_supported_backends (void) EV_THROW
1339{ 2408{
1340 unsigned int flags = 0; 2409 unsigned int flags = 0;
1341 2410
1342 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2411 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1343 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2412 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1346 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2415 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1347 2416
1348 return flags; 2417 return flags;
1349} 2418}
1350 2419
1351unsigned int 2420unsigned int ecb_cold
1352ev_recommended_backends (void) 2421ev_recommended_backends (void) EV_THROW
1353{ 2422{
1354 unsigned int flags = ev_supported_backends (); 2423 unsigned int flags = ev_supported_backends ();
1355 2424
1356#ifndef __NetBSD__ 2425#ifndef __NetBSD__
1357 /* kqueue is borked on everything but netbsd apparently */ 2426 /* kqueue is borked on everything but netbsd apparently */
… …
1361#ifdef __APPLE__ 2430#ifdef __APPLE__
1362 /* only select works correctly on that "unix-certified" platform */ 2431 /* only select works correctly on that "unix-certified" platform */
1363 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2432 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1364 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2433 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1365#endif 2434#endif
2435#ifdef __FreeBSD__
2436 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2437#endif
1366 2438
1367 return flags; 2439 return flags;
1368} 2440}
1369 2441
2442unsigned int ecb_cold
2443ev_embeddable_backends (void) EV_THROW
2444{
2445 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2446
2447 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2448 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2449 flags &= ~EVBACKEND_EPOLL;
2450
2451 return flags;
2452}
2453
1370unsigned int 2454unsigned int
1371ev_embeddable_backends (void) 2455ev_backend (EV_P) EV_THROW
1372{ 2456{
1373 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2457 return backend;
1374
1375 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1376 /* please fix it and tell me how to detect the fix */
1377 flags &= ~EVBACKEND_EPOLL;
1378
1379 return flags;
1380} 2458}
1381 2459
2460#if EV_FEATURE_API
1382unsigned int 2461unsigned int
1383ev_backend (EV_P) 2462ev_iteration (EV_P) EV_THROW
1384{ 2463{
1385 return backend; 2464 return loop_count;
1386} 2465}
1387 2466
1388#if EV_MINIMAL < 2
1389unsigned int 2467unsigned int
1390ev_loop_count (EV_P) 2468ev_depth (EV_P) EV_THROW
1391{
1392 return loop_count;
1393}
1394
1395unsigned int
1396ev_loop_depth (EV_P)
1397{ 2469{
1398 return loop_depth; 2470 return loop_depth;
1399} 2471}
1400 2472
1401void 2473void
1402ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2474ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1403{ 2475{
1404 io_blocktime = interval; 2476 io_blocktime = interval;
1405} 2477}
1406 2478
1407void 2479void
1408ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2480ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1409{ 2481{
1410 timeout_blocktime = interval; 2482 timeout_blocktime = interval;
1411} 2483}
1412 2484
1413void 2485void
1414ev_set_userdata (EV_P_ void *data) 2486ev_set_userdata (EV_P_ void *data) EV_THROW
1415{ 2487{
1416 userdata = data; 2488 userdata = data;
1417} 2489}
1418 2490
1419void * 2491void *
1420ev_userdata (EV_P) 2492ev_userdata (EV_P) EV_THROW
1421{ 2493{
1422 return userdata; 2494 return userdata;
1423} 2495}
1424 2496
2497void
1425void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2498ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1426{ 2499{
1427 invoke_cb = invoke_pending_cb; 2500 invoke_cb = invoke_pending_cb;
1428} 2501}
1429 2502
2503void
1430void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2504ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1431{ 2505{
1432 release_cb = release; 2506 release_cb = release;
1433 acquire_cb = acquire; 2507 acquire_cb = acquire;
1434} 2508}
1435#endif 2509#endif
1436 2510
1437/* initialise a loop structure, must be zero-initialised */ 2511/* initialise a loop structure, must be zero-initialised */
1438static void noinline 2512static void noinline ecb_cold
1439loop_init (EV_P_ unsigned int flags) 2513loop_init (EV_P_ unsigned int flags) EV_THROW
1440{ 2514{
1441 if (!backend) 2515 if (!backend)
1442 { 2516 {
2517 origflags = flags;
2518
1443#if EV_USE_REALTIME 2519#if EV_USE_REALTIME
1444 if (!have_realtime) 2520 if (!have_realtime)
1445 { 2521 {
1446 struct timespec ts; 2522 struct timespec ts;
1447 2523
… …
1458 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2534 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1459 have_monotonic = 1; 2535 have_monotonic = 1;
1460 } 2536 }
1461#endif 2537#endif
1462 2538
1463 ev_rt_now = ev_time ();
1464 mn_now = get_clock ();
1465 now_floor = mn_now;
1466 rtmn_diff = ev_rt_now - mn_now;
1467#if EV_MINIMAL < 2
1468 invoke_cb = ev_invoke_pending;
1469#endif
1470
1471 io_blocktime = 0.;
1472 timeout_blocktime = 0.;
1473 backend = 0;
1474 backend_fd = -1;
1475 gotasync = 0;
1476#if EV_USE_INOTIFY
1477 fs_fd = -2;
1478#endif
1479
1480 /* pid check not overridable via env */ 2539 /* pid check not overridable via env */
1481#ifndef _WIN32 2540#ifndef _WIN32
1482 if (flags & EVFLAG_FORKCHECK) 2541 if (flags & EVFLAG_FORKCHECK)
1483 curpid = getpid (); 2542 curpid = getpid ();
1484#endif 2543#endif
… …
1486 if (!(flags & EVFLAG_NOENV) 2545 if (!(flags & EVFLAG_NOENV)
1487 && !enable_secure () 2546 && !enable_secure ()
1488 && getenv ("LIBEV_FLAGS")) 2547 && getenv ("LIBEV_FLAGS"))
1489 flags = atoi (getenv ("LIBEV_FLAGS")); 2548 flags = atoi (getenv ("LIBEV_FLAGS"));
1490 2549
1491 if (!(flags & 0x0000ffffU)) 2550 ev_rt_now = ev_time ();
2551 mn_now = get_clock ();
2552 now_floor = mn_now;
2553 rtmn_diff = ev_rt_now - mn_now;
2554#if EV_FEATURE_API
2555 invoke_cb = ev_invoke_pending;
2556#endif
2557
2558 io_blocktime = 0.;
2559 timeout_blocktime = 0.;
2560 backend = 0;
2561 backend_fd = -1;
2562 sig_pending = 0;
2563#if EV_ASYNC_ENABLE
2564 async_pending = 0;
2565#endif
2566 pipe_write_skipped = 0;
2567 pipe_write_wanted = 0;
2568 evpipe [0] = -1;
2569 evpipe [1] = -1;
2570#if EV_USE_INOTIFY
2571 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2572#endif
2573#if EV_USE_SIGNALFD
2574 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2575#endif
2576
2577 if (!(flags & EVBACKEND_MASK))
1492 flags |= ev_recommended_backends (); 2578 flags |= ev_recommended_backends ();
1493 2579
2580#if EV_USE_IOCP
2581 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2582#endif
1494#if EV_USE_PORT 2583#if EV_USE_PORT
1495 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2584 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1496#endif 2585#endif
1497#if EV_USE_KQUEUE 2586#if EV_USE_KQUEUE
1498 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2587 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1507 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2596 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1508#endif 2597#endif
1509 2598
1510 ev_prepare_init (&pending_w, pendingcb); 2599 ev_prepare_init (&pending_w, pendingcb);
1511 2600
2601#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1512 ev_init (&pipe_w, pipecb); 2602 ev_init (&pipe_w, pipecb);
1513 ev_set_priority (&pipe_w, EV_MAXPRI); 2603 ev_set_priority (&pipe_w, EV_MAXPRI);
2604#endif
1514 } 2605 }
1515} 2606}
1516 2607
1517/* free up a loop structure */ 2608/* free up a loop structure */
1518static void noinline 2609void ecb_cold
1519loop_destroy (EV_P) 2610ev_loop_destroy (EV_P)
1520{ 2611{
1521 int i; 2612 int i;
1522 2613
2614#if EV_MULTIPLICITY
2615 /* mimic free (0) */
2616 if (!EV_A)
2617 return;
2618#endif
2619
2620#if EV_CLEANUP_ENABLE
2621 /* queue cleanup watchers (and execute them) */
2622 if (expect_false (cleanupcnt))
2623 {
2624 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2625 EV_INVOKE_PENDING;
2626 }
2627#endif
2628
2629#if EV_CHILD_ENABLE
2630 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2631 {
2632 ev_ref (EV_A); /* child watcher */
2633 ev_signal_stop (EV_A_ &childev);
2634 }
2635#endif
2636
1523 if (ev_is_active (&pipe_w)) 2637 if (ev_is_active (&pipe_w))
1524 { 2638 {
1525 ev_ref (EV_A); /* signal watcher */ 2639 /*ev_ref (EV_A);*/
1526 ev_io_stop (EV_A_ &pipe_w); 2640 /*ev_io_stop (EV_A_ &pipe_w);*/
1527 2641
2642 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2643 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2644 }
2645
1528#if EV_USE_EVENTFD 2646#if EV_USE_SIGNALFD
1529 if (evfd >= 0) 2647 if (ev_is_active (&sigfd_w))
1530 close (evfd); 2648 close (sigfd);
1531#endif 2649#endif
1532
1533 if (evpipe [0] >= 0)
1534 {
1535 close (evpipe [0]);
1536 close (evpipe [1]);
1537 }
1538 }
1539 2650
1540#if EV_USE_INOTIFY 2651#if EV_USE_INOTIFY
1541 if (fs_fd >= 0) 2652 if (fs_fd >= 0)
1542 close (fs_fd); 2653 close (fs_fd);
1543#endif 2654#endif
1544 2655
1545 if (backend_fd >= 0) 2656 if (backend_fd >= 0)
1546 close (backend_fd); 2657 close (backend_fd);
1547 2658
2659#if EV_USE_IOCP
2660 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2661#endif
1548#if EV_USE_PORT 2662#if EV_USE_PORT
1549 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2663 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1550#endif 2664#endif
1551#if EV_USE_KQUEUE 2665#if EV_USE_KQUEUE
1552 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2666 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1567#if EV_IDLE_ENABLE 2681#if EV_IDLE_ENABLE
1568 array_free (idle, [i]); 2682 array_free (idle, [i]);
1569#endif 2683#endif
1570 } 2684 }
1571 2685
1572 ev_free (anfds); anfdmax = 0; 2686 ev_free (anfds); anfds = 0; anfdmax = 0;
1573 2687
1574 /* have to use the microsoft-never-gets-it-right macro */ 2688 /* have to use the microsoft-never-gets-it-right macro */
1575 array_free (rfeed, EMPTY); 2689 array_free (rfeed, EMPTY);
1576 array_free (fdchange, EMPTY); 2690 array_free (fdchange, EMPTY);
1577 array_free (timer, EMPTY); 2691 array_free (timer, EMPTY);
… …
1579 array_free (periodic, EMPTY); 2693 array_free (periodic, EMPTY);
1580#endif 2694#endif
1581#if EV_FORK_ENABLE 2695#if EV_FORK_ENABLE
1582 array_free (fork, EMPTY); 2696 array_free (fork, EMPTY);
1583#endif 2697#endif
2698#if EV_CLEANUP_ENABLE
2699 array_free (cleanup, EMPTY);
2700#endif
1584 array_free (prepare, EMPTY); 2701 array_free (prepare, EMPTY);
1585 array_free (check, EMPTY); 2702 array_free (check, EMPTY);
1586#if EV_ASYNC_ENABLE 2703#if EV_ASYNC_ENABLE
1587 array_free (async, EMPTY); 2704 array_free (async, EMPTY);
1588#endif 2705#endif
1589 2706
1590 backend = 0; 2707 backend = 0;
2708
2709#if EV_MULTIPLICITY
2710 if (ev_is_default_loop (EV_A))
2711#endif
2712 ev_default_loop_ptr = 0;
2713#if EV_MULTIPLICITY
2714 else
2715 ev_free (EV_A);
2716#endif
1591} 2717}
1592 2718
1593#if EV_USE_INOTIFY 2719#if EV_USE_INOTIFY
1594inline_size void infy_fork (EV_P); 2720inline_size void infy_fork (EV_P);
1595#endif 2721#endif
… …
1608#endif 2734#endif
1609#if EV_USE_INOTIFY 2735#if EV_USE_INOTIFY
1610 infy_fork (EV_A); 2736 infy_fork (EV_A);
1611#endif 2737#endif
1612 2738
2739#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1613 if (ev_is_active (&pipe_w)) 2740 if (ev_is_active (&pipe_w))
1614 { 2741 {
1615 /* this "locks" the handlers against writing to the pipe */ 2742 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1616 /* while we modify the fd vars */
1617 gotsig = 1;
1618#if EV_ASYNC_ENABLE
1619 gotasync = 1;
1620#endif
1621 2743
1622 ev_ref (EV_A); 2744 ev_ref (EV_A);
1623 ev_io_stop (EV_A_ &pipe_w); 2745 ev_io_stop (EV_A_ &pipe_w);
1624 2746
1625#if EV_USE_EVENTFD
1626 if (evfd >= 0)
1627 close (evfd);
1628#endif
1629
1630 if (evpipe [0] >= 0) 2747 if (evpipe [0] >= 0)
1631 { 2748 EV_WIN32_CLOSE_FD (evpipe [0]);
1632 close (evpipe [0]);
1633 close (evpipe [1]);
1634 }
1635 2749
1636 evpipe_init (EV_A); 2750 evpipe_init (EV_A);
1637 /* now iterate over everything, in case we missed something */ 2751 /* iterate over everything, in case we missed something before */
1638 pipecb (EV_A_ &pipe_w, EV_READ); 2752 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1639 } 2753 }
2754#endif
1640 2755
1641 postfork = 0; 2756 postfork = 0;
1642} 2757}
1643 2758
1644#if EV_MULTIPLICITY 2759#if EV_MULTIPLICITY
1645 2760
1646struct ev_loop * 2761struct ev_loop * ecb_cold
1647ev_loop_new (unsigned int flags) 2762ev_loop_new (unsigned int flags) EV_THROW
1648{ 2763{
1649 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2764 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1650 2765
1651 memset (loop, 0, sizeof (struct ev_loop)); 2766 memset (EV_A, 0, sizeof (struct ev_loop));
1652
1653 loop_init (EV_A_ flags); 2767 loop_init (EV_A_ flags);
1654 2768
1655 if (ev_backend (EV_A)) 2769 if (ev_backend (EV_A))
1656 return loop; 2770 return EV_A;
1657 2771
2772 ev_free (EV_A);
1658 return 0; 2773 return 0;
1659} 2774}
1660 2775
1661void
1662ev_loop_destroy (EV_P)
1663{
1664 loop_destroy (EV_A);
1665 ev_free (loop);
1666}
1667
1668void
1669ev_loop_fork (EV_P)
1670{
1671 postfork = 1; /* must be in line with ev_default_fork */
1672}
1673#endif /* multiplicity */ 2776#endif /* multiplicity */
1674 2777
1675#if EV_VERIFY 2778#if EV_VERIFY
1676static void noinline 2779static void noinline ecb_cold
1677verify_watcher (EV_P_ W w) 2780verify_watcher (EV_P_ W w)
1678{ 2781{
1679 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2782 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1680 2783
1681 if (w->pending) 2784 if (w->pending)
1682 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2785 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1683} 2786}
1684 2787
1685static void noinline 2788static void noinline ecb_cold
1686verify_heap (EV_P_ ANHE *heap, int N) 2789verify_heap (EV_P_ ANHE *heap, int N)
1687{ 2790{
1688 int i; 2791 int i;
1689 2792
1690 for (i = HEAP0; i < N + HEAP0; ++i) 2793 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1695 2798
1696 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2799 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1697 } 2800 }
1698} 2801}
1699 2802
1700static void noinline 2803static void noinline ecb_cold
1701array_verify (EV_P_ W *ws, int cnt) 2804array_verify (EV_P_ W *ws, int cnt)
1702{ 2805{
1703 while (cnt--) 2806 while (cnt--)
1704 { 2807 {
1705 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2808 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1706 verify_watcher (EV_A_ ws [cnt]); 2809 verify_watcher (EV_A_ ws [cnt]);
1707 } 2810 }
1708} 2811}
1709#endif 2812#endif
1710 2813
1711#if EV_MINIMAL < 2 2814#if EV_FEATURE_API
1712void 2815void ecb_cold
1713ev_loop_verify (EV_P) 2816ev_verify (EV_P) EV_THROW
1714{ 2817{
1715#if EV_VERIFY 2818#if EV_VERIFY
1716 int i; 2819 int i;
1717 WL w; 2820 WL w, w2;
1718 2821
1719 assert (activecnt >= -1); 2822 assert (activecnt >= -1);
1720 2823
1721 assert (fdchangemax >= fdchangecnt); 2824 assert (fdchangemax >= fdchangecnt);
1722 for (i = 0; i < fdchangecnt; ++i) 2825 for (i = 0; i < fdchangecnt; ++i)
1723 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2826 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1724 2827
1725 assert (anfdmax >= 0); 2828 assert (anfdmax >= 0);
1726 for (i = 0; i < anfdmax; ++i) 2829 for (i = 0; i < anfdmax; ++i)
2830 {
2831 int j = 0;
2832
1727 for (w = anfds [i].head; w; w = w->next) 2833 for (w = w2 = anfds [i].head; w; w = w->next)
1728 { 2834 {
1729 verify_watcher (EV_A_ (W)w); 2835 verify_watcher (EV_A_ (W)w);
2836
2837 if (j++ & 1)
2838 {
2839 assert (("libev: io watcher list contains a loop", w != w2));
2840 w2 = w2->next;
2841 }
2842
1730 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2843 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1731 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2844 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1732 } 2845 }
2846 }
1733 2847
1734 assert (timermax >= timercnt); 2848 assert (timermax >= timercnt);
1735 verify_heap (EV_A_ timers, timercnt); 2849 verify_heap (EV_A_ timers, timercnt);
1736 2850
1737#if EV_PERIODIC_ENABLE 2851#if EV_PERIODIC_ENABLE
… …
1752#if EV_FORK_ENABLE 2866#if EV_FORK_ENABLE
1753 assert (forkmax >= forkcnt); 2867 assert (forkmax >= forkcnt);
1754 array_verify (EV_A_ (W *)forks, forkcnt); 2868 array_verify (EV_A_ (W *)forks, forkcnt);
1755#endif 2869#endif
1756 2870
2871#if EV_CLEANUP_ENABLE
2872 assert (cleanupmax >= cleanupcnt);
2873 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2874#endif
2875
1757#if EV_ASYNC_ENABLE 2876#if EV_ASYNC_ENABLE
1758 assert (asyncmax >= asynccnt); 2877 assert (asyncmax >= asynccnt);
1759 array_verify (EV_A_ (W *)asyncs, asynccnt); 2878 array_verify (EV_A_ (W *)asyncs, asynccnt);
1760#endif 2879#endif
1761 2880
2881#if EV_PREPARE_ENABLE
1762 assert (preparemax >= preparecnt); 2882 assert (preparemax >= preparecnt);
1763 array_verify (EV_A_ (W *)prepares, preparecnt); 2883 array_verify (EV_A_ (W *)prepares, preparecnt);
2884#endif
1764 2885
2886#if EV_CHECK_ENABLE
1765 assert (checkmax >= checkcnt); 2887 assert (checkmax >= checkcnt);
1766 array_verify (EV_A_ (W *)checks, checkcnt); 2888 array_verify (EV_A_ (W *)checks, checkcnt);
2889#endif
1767 2890
1768# if 0 2891# if 0
2892#if EV_CHILD_ENABLE
1769 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2893 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1770 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2894 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2895#endif
1771# endif 2896# endif
1772#endif 2897#endif
1773} 2898}
1774#endif 2899#endif
1775 2900
1776#if EV_MULTIPLICITY 2901#if EV_MULTIPLICITY
1777struct ev_loop * 2902struct ev_loop * ecb_cold
1778ev_default_loop_init (unsigned int flags)
1779#else 2903#else
1780int 2904int
2905#endif
1781ev_default_loop (unsigned int flags) 2906ev_default_loop (unsigned int flags) EV_THROW
1782#endif
1783{ 2907{
1784 if (!ev_default_loop_ptr) 2908 if (!ev_default_loop_ptr)
1785 { 2909 {
1786#if EV_MULTIPLICITY 2910#if EV_MULTIPLICITY
1787 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2911 EV_P = ev_default_loop_ptr = &default_loop_struct;
1788#else 2912#else
1789 ev_default_loop_ptr = 1; 2913 ev_default_loop_ptr = 1;
1790#endif 2914#endif
1791 2915
1792 loop_init (EV_A_ flags); 2916 loop_init (EV_A_ flags);
1793 2917
1794 if (ev_backend (EV_A)) 2918 if (ev_backend (EV_A))
1795 { 2919 {
1796#ifndef _WIN32 2920#if EV_CHILD_ENABLE
1797 ev_signal_init (&childev, childcb, SIGCHLD); 2921 ev_signal_init (&childev, childcb, SIGCHLD);
1798 ev_set_priority (&childev, EV_MAXPRI); 2922 ev_set_priority (&childev, EV_MAXPRI);
1799 ev_signal_start (EV_A_ &childev); 2923 ev_signal_start (EV_A_ &childev);
1800 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2924 ev_unref (EV_A); /* child watcher should not keep loop alive */
1801#endif 2925#endif
… …
1806 2930
1807 return ev_default_loop_ptr; 2931 return ev_default_loop_ptr;
1808} 2932}
1809 2933
1810void 2934void
1811ev_default_destroy (void) 2935ev_loop_fork (EV_P) EV_THROW
1812{ 2936{
1813#if EV_MULTIPLICITY 2937 postfork = 1;
1814 struct ev_loop *loop = ev_default_loop_ptr;
1815#endif
1816
1817 ev_default_loop_ptr = 0;
1818
1819#ifndef _WIN32
1820 ev_ref (EV_A); /* child watcher */
1821 ev_signal_stop (EV_A_ &childev);
1822#endif
1823
1824 loop_destroy (EV_A);
1825}
1826
1827void
1828ev_default_fork (void)
1829{
1830#if EV_MULTIPLICITY
1831 struct ev_loop *loop = ev_default_loop_ptr;
1832#endif
1833
1834 postfork = 1; /* must be in line with ev_loop_fork */
1835} 2938}
1836 2939
1837/*****************************************************************************/ 2940/*****************************************************************************/
1838 2941
1839void 2942void
… …
1841{ 2944{
1842 EV_CB_INVOKE ((W)w, revents); 2945 EV_CB_INVOKE ((W)w, revents);
1843} 2946}
1844 2947
1845unsigned int 2948unsigned int
1846ev_pending_count (EV_P) 2949ev_pending_count (EV_P) EV_THROW
1847{ 2950{
1848 int pri; 2951 int pri;
1849 unsigned int count = 0; 2952 unsigned int count = 0;
1850 2953
1851 for (pri = NUMPRI; pri--; ) 2954 for (pri = NUMPRI; pri--; )
… …
1855} 2958}
1856 2959
1857void noinline 2960void noinline
1858ev_invoke_pending (EV_P) 2961ev_invoke_pending (EV_P)
1859{ 2962{
1860 int pri; 2963 pendingpri = NUMPRI;
1861 2964
1862 for (pri = NUMPRI; pri--; ) 2965 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2966 {
2967 --pendingpri;
2968
1863 while (pendingcnt [pri]) 2969 while (pendingcnt [pendingpri])
1864 { 2970 {
1865 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2971 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1866 2972
1867 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1868 /* ^ this is no longer true, as pending_w could be here */
1869
1870 p->w->pending = 0; 2973 p->w->pending = 0;
1871 EV_CB_INVOKE (p->w, p->events); 2974 EV_CB_INVOKE (p->w, p->events);
1872 EV_FREQUENT_CHECK; 2975 EV_FREQUENT_CHECK;
1873 } 2976 }
2977 }
1874} 2978}
1875 2979
1876#if EV_IDLE_ENABLE 2980#if EV_IDLE_ENABLE
1877/* make idle watchers pending. this handles the "call-idle */ 2981/* make idle watchers pending. this handles the "call-idle */
1878/* only when higher priorities are idle" logic */ 2982/* only when higher priorities are idle" logic */
… …
1930 EV_FREQUENT_CHECK; 3034 EV_FREQUENT_CHECK;
1931 feed_reverse (EV_A_ (W)w); 3035 feed_reverse (EV_A_ (W)w);
1932 } 3036 }
1933 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3037 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1934 3038
1935 feed_reverse_done (EV_A_ EV_TIMEOUT); 3039 feed_reverse_done (EV_A_ EV_TIMER);
1936 } 3040 }
1937} 3041}
1938 3042
1939#if EV_PERIODIC_ENABLE 3043#if EV_PERIODIC_ENABLE
3044
3045static void noinline
3046periodic_recalc (EV_P_ ev_periodic *w)
3047{
3048 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3049 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3050
3051 /* the above almost always errs on the low side */
3052 while (at <= ev_rt_now)
3053 {
3054 ev_tstamp nat = at + w->interval;
3055
3056 /* when resolution fails us, we use ev_rt_now */
3057 if (expect_false (nat == at))
3058 {
3059 at = ev_rt_now;
3060 break;
3061 }
3062
3063 at = nat;
3064 }
3065
3066 ev_at (w) = at;
3067}
3068
1940/* make periodics pending */ 3069/* make periodics pending */
1941inline_size void 3070inline_size void
1942periodics_reify (EV_P) 3071periodics_reify (EV_P)
1943{ 3072{
1944 EV_FREQUENT_CHECK; 3073 EV_FREQUENT_CHECK;
1945 3074
1946 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3075 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1947 { 3076 {
1948 int feed_count = 0;
1949
1950 do 3077 do
1951 { 3078 {
1952 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3079 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1953 3080
1954 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3081 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1963 ANHE_at_cache (periodics [HEAP0]); 3090 ANHE_at_cache (periodics [HEAP0]);
1964 downheap (periodics, periodiccnt, HEAP0); 3091 downheap (periodics, periodiccnt, HEAP0);
1965 } 3092 }
1966 else if (w->interval) 3093 else if (w->interval)
1967 { 3094 {
1968 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3095 periodic_recalc (EV_A_ w);
1969 /* if next trigger time is not sufficiently in the future, put it there */
1970 /* this might happen because of floating point inexactness */
1971 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1972 {
1973 ev_at (w) += w->interval;
1974
1975 /* if interval is unreasonably low we might still have a time in the past */
1976 /* so correct this. this will make the periodic very inexact, but the user */
1977 /* has effectively asked to get triggered more often than possible */
1978 if (ev_at (w) < ev_rt_now)
1979 ev_at (w) = ev_rt_now;
1980 }
1981
1982 ANHE_at_cache (periodics [HEAP0]); 3096 ANHE_at_cache (periodics [HEAP0]);
1983 downheap (periodics, periodiccnt, HEAP0); 3097 downheap (periodics, periodiccnt, HEAP0);
1984 } 3098 }
1985 else 3099 else
1986 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3100 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1993 feed_reverse_done (EV_A_ EV_PERIODIC); 3107 feed_reverse_done (EV_A_ EV_PERIODIC);
1994 } 3108 }
1995} 3109}
1996 3110
1997/* simply recalculate all periodics */ 3111/* simply recalculate all periodics */
1998/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3112/* TODO: maybe ensure that at least one event happens when jumping forward? */
1999static void noinline 3113static void noinline ecb_cold
2000periodics_reschedule (EV_P) 3114periodics_reschedule (EV_P)
2001{ 3115{
2002 int i; 3116 int i;
2003 3117
2004 /* adjust periodics after time jump */ 3118 /* adjust periodics after time jump */
… …
2007 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3121 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2008 3122
2009 if (w->reschedule_cb) 3123 if (w->reschedule_cb)
2010 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3124 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2011 else if (w->interval) 3125 else if (w->interval)
2012 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3126 periodic_recalc (EV_A_ w);
2013 3127
2014 ANHE_at_cache (periodics [i]); 3128 ANHE_at_cache (periodics [i]);
2015 } 3129 }
2016 3130
2017 reheap (periodics, periodiccnt); 3131 reheap (periodics, periodiccnt);
2018} 3132}
2019#endif 3133#endif
2020 3134
2021/* adjust all timers by a given offset */ 3135/* adjust all timers by a given offset */
2022static void noinline 3136static void noinline ecb_cold
2023timers_reschedule (EV_P_ ev_tstamp adjust) 3137timers_reschedule (EV_P_ ev_tstamp adjust)
2024{ 3138{
2025 int i; 3139 int i;
2026 3140
2027 for (i = 0; i < timercnt; ++i) 3141 for (i = 0; i < timercnt; ++i)
… …
2031 ANHE_at_cache (*he); 3145 ANHE_at_cache (*he);
2032 } 3146 }
2033} 3147}
2034 3148
2035/* fetch new monotonic and realtime times from the kernel */ 3149/* fetch new monotonic and realtime times from the kernel */
2036/* also detetc if there was a timejump, and act accordingly */ 3150/* also detect if there was a timejump, and act accordingly */
2037inline_speed void 3151inline_speed void
2038time_update (EV_P_ ev_tstamp max_block) 3152time_update (EV_P_ ev_tstamp max_block)
2039{ 3153{
2040#if EV_USE_MONOTONIC 3154#if EV_USE_MONOTONIC
2041 if (expect_true (have_monotonic)) 3155 if (expect_true (have_monotonic))
… …
2064 * doesn't hurt either as we only do this on time-jumps or 3178 * doesn't hurt either as we only do this on time-jumps or
2065 * in the unlikely event of having been preempted here. 3179 * in the unlikely event of having been preempted here.
2066 */ 3180 */
2067 for (i = 4; --i; ) 3181 for (i = 4; --i; )
2068 { 3182 {
3183 ev_tstamp diff;
2069 rtmn_diff = ev_rt_now - mn_now; 3184 rtmn_diff = ev_rt_now - mn_now;
2070 3185
3186 diff = odiff - rtmn_diff;
3187
2071 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3188 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2072 return; /* all is well */ 3189 return; /* all is well */
2073 3190
2074 ev_rt_now = ev_time (); 3191 ev_rt_now = ev_time ();
2075 mn_now = get_clock (); 3192 mn_now = get_clock ();
2076 now_floor = mn_now; 3193 now_floor = mn_now;
… …
2098 3215
2099 mn_now = ev_rt_now; 3216 mn_now = ev_rt_now;
2100 } 3217 }
2101} 3218}
2102 3219
2103void 3220int
2104ev_loop (EV_P_ int flags) 3221ev_run (EV_P_ int flags)
2105{ 3222{
2106#if EV_MINIMAL < 2 3223#if EV_FEATURE_API
2107 ++loop_depth; 3224 ++loop_depth;
2108#endif 3225#endif
2109 3226
2110 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 3227 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2111 3228
2112 loop_done = EVUNLOOP_CANCEL; 3229 loop_done = EVBREAK_CANCEL;
2113 3230
2114 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 3231 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2115 3232
2116 do 3233 do
2117 { 3234 {
2118#if EV_VERIFY >= 2 3235#if EV_VERIFY >= 2
2119 ev_loop_verify (EV_A); 3236 ev_verify (EV_A);
2120#endif 3237#endif
2121 3238
2122#ifndef _WIN32 3239#ifndef _WIN32
2123 if (expect_false (curpid)) /* penalise the forking check even more */ 3240 if (expect_false (curpid)) /* penalise the forking check even more */
2124 if (expect_false (getpid () != curpid)) 3241 if (expect_false (getpid () != curpid))
… …
2136 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3253 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2137 EV_INVOKE_PENDING; 3254 EV_INVOKE_PENDING;
2138 } 3255 }
2139#endif 3256#endif
2140 3257
3258#if EV_PREPARE_ENABLE
2141 /* queue prepare watchers (and execute them) */ 3259 /* queue prepare watchers (and execute them) */
2142 if (expect_false (preparecnt)) 3260 if (expect_false (preparecnt))
2143 { 3261 {
2144 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3262 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2145 EV_INVOKE_PENDING; 3263 EV_INVOKE_PENDING;
2146 } 3264 }
3265#endif
2147 3266
2148 if (expect_false (loop_done)) 3267 if (expect_false (loop_done))
2149 break; 3268 break;
2150 3269
2151 /* we might have forked, so reify kernel state if necessary */ 3270 /* we might have forked, so reify kernel state if necessary */
… …
2158 /* calculate blocking time */ 3277 /* calculate blocking time */
2159 { 3278 {
2160 ev_tstamp waittime = 0.; 3279 ev_tstamp waittime = 0.;
2161 ev_tstamp sleeptime = 0.; 3280 ev_tstamp sleeptime = 0.;
2162 3281
3282 /* remember old timestamp for io_blocktime calculation */
3283 ev_tstamp prev_mn_now = mn_now;
3284
3285 /* update time to cancel out callback processing overhead */
3286 time_update (EV_A_ 1e100);
3287
3288 /* from now on, we want a pipe-wake-up */
3289 pipe_write_wanted = 1;
3290
3291 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3292
2163 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3293 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2164 { 3294 {
2165 /* remember old timestamp for io_blocktime calculation */
2166 ev_tstamp prev_mn_now = mn_now;
2167
2168 /* update time to cancel out callback processing overhead */
2169 time_update (EV_A_ 1e100);
2170
2171 waittime = MAX_BLOCKTIME; 3295 waittime = MAX_BLOCKTIME;
2172 3296
2173 if (timercnt) 3297 if (timercnt)
2174 { 3298 {
2175 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3299 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2176 if (waittime > to) waittime = to; 3300 if (waittime > to) waittime = to;
2177 } 3301 }
2178 3302
2179#if EV_PERIODIC_ENABLE 3303#if EV_PERIODIC_ENABLE
2180 if (periodiccnt) 3304 if (periodiccnt)
2181 { 3305 {
2182 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3306 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2183 if (waittime > to) waittime = to; 3307 if (waittime > to) waittime = to;
2184 } 3308 }
2185#endif 3309#endif
2186 3310
2187 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3311 /* don't let timeouts decrease the waittime below timeout_blocktime */
2188 if (expect_false (waittime < timeout_blocktime)) 3312 if (expect_false (waittime < timeout_blocktime))
2189 waittime = timeout_blocktime; 3313 waittime = timeout_blocktime;
3314
3315 /* at this point, we NEED to wait, so we have to ensure */
3316 /* to pass a minimum nonzero value to the backend */
3317 if (expect_false (waittime < backend_mintime))
3318 waittime = backend_mintime;
2190 3319
2191 /* extra check because io_blocktime is commonly 0 */ 3320 /* extra check because io_blocktime is commonly 0 */
2192 if (expect_false (io_blocktime)) 3321 if (expect_false (io_blocktime))
2193 { 3322 {
2194 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3323 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2195 3324
2196 if (sleeptime > waittime - backend_fudge) 3325 if (sleeptime > waittime - backend_mintime)
2197 sleeptime = waittime - backend_fudge; 3326 sleeptime = waittime - backend_mintime;
2198 3327
2199 if (expect_true (sleeptime > 0.)) 3328 if (expect_true (sleeptime > 0.))
2200 { 3329 {
2201 ev_sleep (sleeptime); 3330 ev_sleep (sleeptime);
2202 waittime -= sleeptime; 3331 waittime -= sleeptime;
2203 } 3332 }
2204 } 3333 }
2205 } 3334 }
2206 3335
2207#if EV_MINIMAL < 2 3336#if EV_FEATURE_API
2208 ++loop_count; 3337 ++loop_count;
2209#endif 3338#endif
2210 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3339 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2211 backend_poll (EV_A_ waittime); 3340 backend_poll (EV_A_ waittime);
2212 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3341 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3342
3343 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3344
3345 ECB_MEMORY_FENCE_ACQUIRE;
3346 if (pipe_write_skipped)
3347 {
3348 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3349 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3350 }
3351
2213 3352
2214 /* update ev_rt_now, do magic */ 3353 /* update ev_rt_now, do magic */
2215 time_update (EV_A_ waittime + sleeptime); 3354 time_update (EV_A_ waittime + sleeptime);
2216 } 3355 }
2217 3356
… …
2224#if EV_IDLE_ENABLE 3363#if EV_IDLE_ENABLE
2225 /* queue idle watchers unless other events are pending */ 3364 /* queue idle watchers unless other events are pending */
2226 idle_reify (EV_A); 3365 idle_reify (EV_A);
2227#endif 3366#endif
2228 3367
3368#if EV_CHECK_ENABLE
2229 /* queue check watchers, to be executed first */ 3369 /* queue check watchers, to be executed first */
2230 if (expect_false (checkcnt)) 3370 if (expect_false (checkcnt))
2231 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3371 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3372#endif
2232 3373
2233 EV_INVOKE_PENDING; 3374 EV_INVOKE_PENDING;
2234 } 3375 }
2235 while (expect_true ( 3376 while (expect_true (
2236 activecnt 3377 activecnt
2237 && !loop_done 3378 && !loop_done
2238 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3379 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2239 )); 3380 ));
2240 3381
2241 if (loop_done == EVUNLOOP_ONE) 3382 if (loop_done == EVBREAK_ONE)
2242 loop_done = EVUNLOOP_CANCEL; 3383 loop_done = EVBREAK_CANCEL;
2243 3384
2244#if EV_MINIMAL < 2 3385#if EV_FEATURE_API
2245 --loop_depth; 3386 --loop_depth;
2246#endif 3387#endif
3388
3389 return activecnt;
2247} 3390}
2248 3391
2249void 3392void
2250ev_unloop (EV_P_ int how) 3393ev_break (EV_P_ int how) EV_THROW
2251{ 3394{
2252 loop_done = how; 3395 loop_done = how;
2253} 3396}
2254 3397
2255void 3398void
2256ev_ref (EV_P) 3399ev_ref (EV_P) EV_THROW
2257{ 3400{
2258 ++activecnt; 3401 ++activecnt;
2259} 3402}
2260 3403
2261void 3404void
2262ev_unref (EV_P) 3405ev_unref (EV_P) EV_THROW
2263{ 3406{
2264 --activecnt; 3407 --activecnt;
2265} 3408}
2266 3409
2267void 3410void
2268ev_now_update (EV_P) 3411ev_now_update (EV_P) EV_THROW
2269{ 3412{
2270 time_update (EV_A_ 1e100); 3413 time_update (EV_A_ 1e100);
2271} 3414}
2272 3415
2273void 3416void
2274ev_suspend (EV_P) 3417ev_suspend (EV_P) EV_THROW
2275{ 3418{
2276 ev_now_update (EV_A); 3419 ev_now_update (EV_A);
2277} 3420}
2278 3421
2279void 3422void
2280ev_resume (EV_P) 3423ev_resume (EV_P) EV_THROW
2281{ 3424{
2282 ev_tstamp mn_prev = mn_now; 3425 ev_tstamp mn_prev = mn_now;
2283 3426
2284 ev_now_update (EV_A); 3427 ev_now_update (EV_A);
2285 timers_reschedule (EV_A_ mn_now - mn_prev); 3428 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2302inline_size void 3445inline_size void
2303wlist_del (WL *head, WL elem) 3446wlist_del (WL *head, WL elem)
2304{ 3447{
2305 while (*head) 3448 while (*head)
2306 { 3449 {
2307 if (*head == elem) 3450 if (expect_true (*head == elem))
2308 { 3451 {
2309 *head = elem->next; 3452 *head = elem->next;
2310 return; 3453 break;
2311 } 3454 }
2312 3455
2313 head = &(*head)->next; 3456 head = &(*head)->next;
2314 } 3457 }
2315} 3458}
… …
2324 w->pending = 0; 3467 w->pending = 0;
2325 } 3468 }
2326} 3469}
2327 3470
2328int 3471int
2329ev_clear_pending (EV_P_ void *w) 3472ev_clear_pending (EV_P_ void *w) EV_THROW
2330{ 3473{
2331 W w_ = (W)w; 3474 W w_ = (W)w;
2332 int pending = w_->pending; 3475 int pending = w_->pending;
2333 3476
2334 if (expect_true (pending)) 3477 if (expect_true (pending))
… …
2367} 3510}
2368 3511
2369/*****************************************************************************/ 3512/*****************************************************************************/
2370 3513
2371void noinline 3514void noinline
2372ev_io_start (EV_P_ ev_io *w) 3515ev_io_start (EV_P_ ev_io *w) EV_THROW
2373{ 3516{
2374 int fd = w->fd; 3517 int fd = w->fd;
2375 3518
2376 if (expect_false (ev_is_active (w))) 3519 if (expect_false (ev_is_active (w)))
2377 return; 3520 return;
2378 3521
2379 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3522 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2380 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3523 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2381 3524
2382 EV_FREQUENT_CHECK; 3525 EV_FREQUENT_CHECK;
2383 3526
2384 ev_start (EV_A_ (W)w, 1); 3527 ev_start (EV_A_ (W)w, 1);
2385 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3528 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2386 wlist_add (&anfds[fd].head, (WL)w); 3529 wlist_add (&anfds[fd].head, (WL)w);
2387 3530
3531 /* common bug, apparently */
3532 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3533
2388 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3534 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2389 w->events &= ~EV__IOFDSET; 3535 w->events &= ~EV__IOFDSET;
2390 3536
2391 EV_FREQUENT_CHECK; 3537 EV_FREQUENT_CHECK;
2392} 3538}
2393 3539
2394void noinline 3540void noinline
2395ev_io_stop (EV_P_ ev_io *w) 3541ev_io_stop (EV_P_ ev_io *w) EV_THROW
2396{ 3542{
2397 clear_pending (EV_A_ (W)w); 3543 clear_pending (EV_A_ (W)w);
2398 if (expect_false (!ev_is_active (w))) 3544 if (expect_false (!ev_is_active (w)))
2399 return; 3545 return;
2400 3546
… …
2403 EV_FREQUENT_CHECK; 3549 EV_FREQUENT_CHECK;
2404 3550
2405 wlist_del (&anfds[w->fd].head, (WL)w); 3551 wlist_del (&anfds[w->fd].head, (WL)w);
2406 ev_stop (EV_A_ (W)w); 3552 ev_stop (EV_A_ (W)w);
2407 3553
2408 fd_change (EV_A_ w->fd, 1); 3554 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2409 3555
2410 EV_FREQUENT_CHECK; 3556 EV_FREQUENT_CHECK;
2411} 3557}
2412 3558
2413void noinline 3559void noinline
2414ev_timer_start (EV_P_ ev_timer *w) 3560ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2415{ 3561{
2416 if (expect_false (ev_is_active (w))) 3562 if (expect_false (ev_is_active (w)))
2417 return; 3563 return;
2418 3564
2419 ev_at (w) += mn_now; 3565 ev_at (w) += mn_now;
… …
2433 3579
2434 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3580 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2435} 3581}
2436 3582
2437void noinline 3583void noinline
2438ev_timer_stop (EV_P_ ev_timer *w) 3584ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2439{ 3585{
2440 clear_pending (EV_A_ (W)w); 3586 clear_pending (EV_A_ (W)w);
2441 if (expect_false (!ev_is_active (w))) 3587 if (expect_false (!ev_is_active (w)))
2442 return; 3588 return;
2443 3589
… …
2455 timers [active] = timers [timercnt + HEAP0]; 3601 timers [active] = timers [timercnt + HEAP0];
2456 adjustheap (timers, timercnt, active); 3602 adjustheap (timers, timercnt, active);
2457 } 3603 }
2458 } 3604 }
2459 3605
2460 EV_FREQUENT_CHECK;
2461
2462 ev_at (w) -= mn_now; 3606 ev_at (w) -= mn_now;
2463 3607
2464 ev_stop (EV_A_ (W)w); 3608 ev_stop (EV_A_ (W)w);
3609
3610 EV_FREQUENT_CHECK;
2465} 3611}
2466 3612
2467void noinline 3613void noinline
2468ev_timer_again (EV_P_ ev_timer *w) 3614ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2469{ 3615{
2470 EV_FREQUENT_CHECK; 3616 EV_FREQUENT_CHECK;
3617
3618 clear_pending (EV_A_ (W)w);
2471 3619
2472 if (ev_is_active (w)) 3620 if (ev_is_active (w))
2473 { 3621 {
2474 if (w->repeat) 3622 if (w->repeat)
2475 { 3623 {
… …
2488 3636
2489 EV_FREQUENT_CHECK; 3637 EV_FREQUENT_CHECK;
2490} 3638}
2491 3639
2492ev_tstamp 3640ev_tstamp
2493ev_timer_remaining (EV_P_ ev_timer *w) 3641ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2494{ 3642{
2495 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3643 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2496} 3644}
2497 3645
2498#if EV_PERIODIC_ENABLE 3646#if EV_PERIODIC_ENABLE
2499void noinline 3647void noinline
2500ev_periodic_start (EV_P_ ev_periodic *w) 3648ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2501{ 3649{
2502 if (expect_false (ev_is_active (w))) 3650 if (expect_false (ev_is_active (w)))
2503 return; 3651 return;
2504 3652
2505 if (w->reschedule_cb) 3653 if (w->reschedule_cb)
2506 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3654 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2507 else if (w->interval) 3655 else if (w->interval)
2508 { 3656 {
2509 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3657 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2510 /* this formula differs from the one in periodic_reify because we do not always round up */ 3658 periodic_recalc (EV_A_ w);
2511 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2512 } 3659 }
2513 else 3660 else
2514 ev_at (w) = w->offset; 3661 ev_at (w) = w->offset;
2515 3662
2516 EV_FREQUENT_CHECK; 3663 EV_FREQUENT_CHECK;
… …
2526 3673
2527 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3674 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2528} 3675}
2529 3676
2530void noinline 3677void noinline
2531ev_periodic_stop (EV_P_ ev_periodic *w) 3678ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2532{ 3679{
2533 clear_pending (EV_A_ (W)w); 3680 clear_pending (EV_A_ (W)w);
2534 if (expect_false (!ev_is_active (w))) 3681 if (expect_false (!ev_is_active (w)))
2535 return; 3682 return;
2536 3683
… …
2548 periodics [active] = periodics [periodiccnt + HEAP0]; 3695 periodics [active] = periodics [periodiccnt + HEAP0];
2549 adjustheap (periodics, periodiccnt, active); 3696 adjustheap (periodics, periodiccnt, active);
2550 } 3697 }
2551 } 3698 }
2552 3699
2553 EV_FREQUENT_CHECK;
2554
2555 ev_stop (EV_A_ (W)w); 3700 ev_stop (EV_A_ (W)w);
3701
3702 EV_FREQUENT_CHECK;
2556} 3703}
2557 3704
2558void noinline 3705void noinline
2559ev_periodic_again (EV_P_ ev_periodic *w) 3706ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2560{ 3707{
2561 /* TODO: use adjustheap and recalculation */ 3708 /* TODO: use adjustheap and recalculation */
2562 ev_periodic_stop (EV_A_ w); 3709 ev_periodic_stop (EV_A_ w);
2563 ev_periodic_start (EV_A_ w); 3710 ev_periodic_start (EV_A_ w);
2564} 3711}
… …
2566 3713
2567#ifndef SA_RESTART 3714#ifndef SA_RESTART
2568# define SA_RESTART 0 3715# define SA_RESTART 0
2569#endif 3716#endif
2570 3717
3718#if EV_SIGNAL_ENABLE
3719
2571void noinline 3720void noinline
2572ev_signal_start (EV_P_ ev_signal *w) 3721ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2573{ 3722{
2574#if EV_MULTIPLICITY
2575 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2576#endif
2577 if (expect_false (ev_is_active (w))) 3723 if (expect_false (ev_is_active (w)))
2578 return; 3724 return;
2579 3725
2580 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3726 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2581 3727
2582 evpipe_init (EV_A); 3728#if EV_MULTIPLICITY
3729 assert (("libev: a signal must not be attached to two different loops",
3730 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2583 3731
2584 EV_FREQUENT_CHECK; 3732 signals [w->signum - 1].loop = EV_A;
3733 ECB_MEMORY_FENCE_RELEASE;
3734#endif
2585 3735
3736 EV_FREQUENT_CHECK;
3737
3738#if EV_USE_SIGNALFD
3739 if (sigfd == -2)
2586 { 3740 {
2587#ifndef _WIN32 3741 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2588 sigset_t full, prev; 3742 if (sigfd < 0 && errno == EINVAL)
2589 sigfillset (&full); 3743 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2590 sigprocmask (SIG_SETMASK, &full, &prev);
2591#endif
2592 3744
2593 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3745 if (sigfd >= 0)
3746 {
3747 fd_intern (sigfd); /* doing it twice will not hurt */
2594 3748
2595#ifndef _WIN32 3749 sigemptyset (&sigfd_set);
2596 sigprocmask (SIG_SETMASK, &prev, 0); 3750
2597#endif 3751 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3752 ev_set_priority (&sigfd_w, EV_MAXPRI);
3753 ev_io_start (EV_A_ &sigfd_w);
3754 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3755 }
2598 } 3756 }
3757
3758 if (sigfd >= 0)
3759 {
3760 /* TODO: check .head */
3761 sigaddset (&sigfd_set, w->signum);
3762 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3763
3764 signalfd (sigfd, &sigfd_set, 0);
3765 }
3766#endif
2599 3767
2600 ev_start (EV_A_ (W)w, 1); 3768 ev_start (EV_A_ (W)w, 1);
2601 wlist_add (&signals [w->signum - 1].head, (WL)w); 3769 wlist_add (&signals [w->signum - 1].head, (WL)w);
2602 3770
2603 if (!((WL)w)->next) 3771 if (!((WL)w)->next)
3772# if EV_USE_SIGNALFD
3773 if (sigfd < 0) /*TODO*/
3774# endif
2604 { 3775 {
2605#if _WIN32 3776# ifdef _WIN32
3777 evpipe_init (EV_A);
3778
2606 signal (w->signum, ev_sighandler); 3779 signal (w->signum, ev_sighandler);
2607#else 3780# else
2608 struct sigaction sa = { }; 3781 struct sigaction sa;
3782
3783 evpipe_init (EV_A);
3784
2609 sa.sa_handler = ev_sighandler; 3785 sa.sa_handler = ev_sighandler;
2610 sigfillset (&sa.sa_mask); 3786 sigfillset (&sa.sa_mask);
2611 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3787 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2612 sigaction (w->signum, &sa, 0); 3788 sigaction (w->signum, &sa, 0);
3789
3790 if (origflags & EVFLAG_NOSIGMASK)
3791 {
3792 sigemptyset (&sa.sa_mask);
3793 sigaddset (&sa.sa_mask, w->signum);
3794 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3795 }
2613#endif 3796#endif
2614 } 3797 }
2615 3798
2616 EV_FREQUENT_CHECK; 3799 EV_FREQUENT_CHECK;
2617} 3800}
2618 3801
2619void noinline 3802void noinline
2620ev_signal_stop (EV_P_ ev_signal *w) 3803ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2621{ 3804{
2622 clear_pending (EV_A_ (W)w); 3805 clear_pending (EV_A_ (W)w);
2623 if (expect_false (!ev_is_active (w))) 3806 if (expect_false (!ev_is_active (w)))
2624 return; 3807 return;
2625 3808
… …
2627 3810
2628 wlist_del (&signals [w->signum - 1].head, (WL)w); 3811 wlist_del (&signals [w->signum - 1].head, (WL)w);
2629 ev_stop (EV_A_ (W)w); 3812 ev_stop (EV_A_ (W)w);
2630 3813
2631 if (!signals [w->signum - 1].head) 3814 if (!signals [w->signum - 1].head)
3815 {
3816#if EV_MULTIPLICITY
3817 signals [w->signum - 1].loop = 0; /* unattach from signal */
3818#endif
3819#if EV_USE_SIGNALFD
3820 if (sigfd >= 0)
3821 {
3822 sigset_t ss;
3823
3824 sigemptyset (&ss);
3825 sigaddset (&ss, w->signum);
3826 sigdelset (&sigfd_set, w->signum);
3827
3828 signalfd (sigfd, &sigfd_set, 0);
3829 sigprocmask (SIG_UNBLOCK, &ss, 0);
3830 }
3831 else
3832#endif
2632 signal (w->signum, SIG_DFL); 3833 signal (w->signum, SIG_DFL);
3834 }
2633 3835
2634 EV_FREQUENT_CHECK; 3836 EV_FREQUENT_CHECK;
2635} 3837}
3838
3839#endif
3840
3841#if EV_CHILD_ENABLE
2636 3842
2637void 3843void
2638ev_child_start (EV_P_ ev_child *w) 3844ev_child_start (EV_P_ ev_child *w) EV_THROW
2639{ 3845{
2640#if EV_MULTIPLICITY 3846#if EV_MULTIPLICITY
2641 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3847 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2642#endif 3848#endif
2643 if (expect_false (ev_is_active (w))) 3849 if (expect_false (ev_is_active (w)))
2644 return; 3850 return;
2645 3851
2646 EV_FREQUENT_CHECK; 3852 EV_FREQUENT_CHECK;
2647 3853
2648 ev_start (EV_A_ (W)w, 1); 3854 ev_start (EV_A_ (W)w, 1);
2649 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3855 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2650 3856
2651 EV_FREQUENT_CHECK; 3857 EV_FREQUENT_CHECK;
2652} 3858}
2653 3859
2654void 3860void
2655ev_child_stop (EV_P_ ev_child *w) 3861ev_child_stop (EV_P_ ev_child *w) EV_THROW
2656{ 3862{
2657 clear_pending (EV_A_ (W)w); 3863 clear_pending (EV_A_ (W)w);
2658 if (expect_false (!ev_is_active (w))) 3864 if (expect_false (!ev_is_active (w)))
2659 return; 3865 return;
2660 3866
2661 EV_FREQUENT_CHECK; 3867 EV_FREQUENT_CHECK;
2662 3868
2663 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3869 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2664 ev_stop (EV_A_ (W)w); 3870 ev_stop (EV_A_ (W)w);
2665 3871
2666 EV_FREQUENT_CHECK; 3872 EV_FREQUENT_CHECK;
2667} 3873}
3874
3875#endif
2668 3876
2669#if EV_STAT_ENABLE 3877#if EV_STAT_ENABLE
2670 3878
2671# ifdef _WIN32 3879# ifdef _WIN32
2672# undef lstat 3880# undef lstat
… …
2678#define MIN_STAT_INTERVAL 0.1074891 3886#define MIN_STAT_INTERVAL 0.1074891
2679 3887
2680static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3888static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2681 3889
2682#if EV_USE_INOTIFY 3890#if EV_USE_INOTIFY
2683# define EV_INOTIFY_BUFSIZE 8192 3891
3892/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3893# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2684 3894
2685static void noinline 3895static void noinline
2686infy_add (EV_P_ ev_stat *w) 3896infy_add (EV_P_ ev_stat *w)
2687{ 3897{
2688 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); 3898 w->wd = inotify_add_watch (fs_fd, w->path,
3899 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3900 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3901 | IN_DONT_FOLLOW | IN_MASK_ADD);
2689 3902
2690 if (w->wd < 0) 3903 if (w->wd >= 0)
3904 {
3905 struct statfs sfs;
3906
3907 /* now local changes will be tracked by inotify, but remote changes won't */
3908 /* unless the filesystem is known to be local, we therefore still poll */
3909 /* also do poll on <2.6.25, but with normal frequency */
3910
3911 if (!fs_2625)
3912 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3913 else if (!statfs (w->path, &sfs)
3914 && (sfs.f_type == 0x1373 /* devfs */
3915 || sfs.f_type == 0x4006 /* fat */
3916 || sfs.f_type == 0x4d44 /* msdos */
3917 || sfs.f_type == 0xEF53 /* ext2/3 */
3918 || sfs.f_type == 0x72b6 /* jffs2 */
3919 || sfs.f_type == 0x858458f6 /* ramfs */
3920 || sfs.f_type == 0x5346544e /* ntfs */
3921 || sfs.f_type == 0x3153464a /* jfs */
3922 || sfs.f_type == 0x9123683e /* btrfs */
3923 || sfs.f_type == 0x52654973 /* reiser3 */
3924 || sfs.f_type == 0x01021994 /* tmpfs */
3925 || sfs.f_type == 0x58465342 /* xfs */))
3926 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3927 else
3928 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2691 { 3929 }
3930 else
3931 {
3932 /* can't use inotify, continue to stat */
2692 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3933 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2693 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2694 3934
2695 /* monitor some parent directory for speedup hints */ 3935 /* if path is not there, monitor some parent directory for speedup hints */
2696 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3936 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2697 /* but an efficiency issue only */ 3937 /* but an efficiency issue only */
2698 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3938 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2699 { 3939 {
2700 char path [4096]; 3940 char path [4096];
… …
2710 if (!pend || pend == path) 3950 if (!pend || pend == path)
2711 break; 3951 break;
2712 3952
2713 *pend = 0; 3953 *pend = 0;
2714 w->wd = inotify_add_watch (fs_fd, path, mask); 3954 w->wd = inotify_add_watch (fs_fd, path, mask);
2715 } 3955 }
2716 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3956 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2717 } 3957 }
2718 } 3958 }
2719 3959
2720 if (w->wd >= 0) 3960 if (w->wd >= 0)
2721 {
2722 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3961 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2723 3962
2724 /* now local changes will be tracked by inotify, but remote changes won't */ 3963 /* now re-arm timer, if required */
2725 /* unless the filesystem it known to be local, we therefore still poll */ 3964 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2726 /* also do poll on <2.6.25, but with normal frequency */
2727 struct statfs sfs;
2728
2729 if (fs_2625 && !statfs (w->path, &sfs))
2730 if (sfs.f_type == 0x1373 /* devfs */
2731 || sfs.f_type == 0xEF53 /* ext2/3 */
2732 || sfs.f_type == 0x3153464a /* jfs */
2733 || sfs.f_type == 0x52654973 /* reiser3 */
2734 || sfs.f_type == 0x01021994 /* tempfs */
2735 || sfs.f_type == 0x58465342 /* xfs */)
2736 return;
2737
2738 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2739 ev_timer_again (EV_A_ &w->timer); 3965 ev_timer_again (EV_A_ &w->timer);
2740 } 3966 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2741} 3967}
2742 3968
2743static void noinline 3969static void noinline
2744infy_del (EV_P_ ev_stat *w) 3970infy_del (EV_P_ ev_stat *w)
2745{ 3971{
… …
2748 3974
2749 if (wd < 0) 3975 if (wd < 0)
2750 return; 3976 return;
2751 3977
2752 w->wd = -2; 3978 w->wd = -2;
2753 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3979 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2754 wlist_del (&fs_hash [slot].head, (WL)w); 3980 wlist_del (&fs_hash [slot].head, (WL)w);
2755 3981
2756 /* remove this watcher, if others are watching it, they will rearm */ 3982 /* remove this watcher, if others are watching it, they will rearm */
2757 inotify_rm_watch (fs_fd, wd); 3983 inotify_rm_watch (fs_fd, wd);
2758} 3984}
… …
2760static void noinline 3986static void noinline
2761infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3987infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2762{ 3988{
2763 if (slot < 0) 3989 if (slot < 0)
2764 /* overflow, need to check for all hash slots */ 3990 /* overflow, need to check for all hash slots */
2765 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3991 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2766 infy_wd (EV_A_ slot, wd, ev); 3992 infy_wd (EV_A_ slot, wd, ev);
2767 else 3993 else
2768 { 3994 {
2769 WL w_; 3995 WL w_;
2770 3996
2771 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3997 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2772 { 3998 {
2773 ev_stat *w = (ev_stat *)w_; 3999 ev_stat *w = (ev_stat *)w_;
2774 w_ = w_->next; /* lets us remove this watcher and all before it */ 4000 w_ = w_->next; /* lets us remove this watcher and all before it */
2775 4001
2776 if (w->wd == wd || wd == -1) 4002 if (w->wd == wd || wd == -1)
2777 { 4003 {
2778 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4004 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2779 { 4005 {
2780 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4006 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2781 w->wd = -1; 4007 w->wd = -1;
2782 infy_add (EV_A_ w); /* re-add, no matter what */ 4008 infy_add (EV_A_ w); /* re-add, no matter what */
2783 } 4009 }
2784 4010
2785 stat_timer_cb (EV_A_ &w->timer, 0); 4011 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2790 4016
2791static void 4017static void
2792infy_cb (EV_P_ ev_io *w, int revents) 4018infy_cb (EV_P_ ev_io *w, int revents)
2793{ 4019{
2794 char buf [EV_INOTIFY_BUFSIZE]; 4020 char buf [EV_INOTIFY_BUFSIZE];
2795 struct inotify_event *ev = (struct inotify_event *)buf;
2796 int ofs; 4021 int ofs;
2797 int len = read (fs_fd, buf, sizeof (buf)); 4022 int len = read (fs_fd, buf, sizeof (buf));
2798 4023
2799 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4024 for (ofs = 0; ofs < len; )
4025 {
4026 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2800 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4027 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4028 ofs += sizeof (struct inotify_event) + ev->len;
4029 }
2801} 4030}
2802 4031
2803inline_size void 4032inline_size void ecb_cold
2804check_2625 (EV_P) 4033ev_check_2625 (EV_P)
2805{ 4034{
2806 /* kernels < 2.6.25 are borked 4035 /* kernels < 2.6.25 are borked
2807 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4036 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2808 */ 4037 */
2809 struct utsname buf; 4038 if (ev_linux_version () < 0x020619)
2810 int major, minor, micro;
2811
2812 if (uname (&buf))
2813 return; 4039 return;
2814 4040
2815 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2816 return;
2817
2818 if (major < 2
2819 || (major == 2 && minor < 6)
2820 || (major == 2 && minor == 6 && micro < 25))
2821 return;
2822
2823 fs_2625 = 1; 4041 fs_2625 = 1;
4042}
4043
4044inline_size int
4045infy_newfd (void)
4046{
4047#if defined IN_CLOEXEC && defined IN_NONBLOCK
4048 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4049 if (fd >= 0)
4050 return fd;
4051#endif
4052 return inotify_init ();
2824} 4053}
2825 4054
2826inline_size void 4055inline_size void
2827infy_init (EV_P) 4056infy_init (EV_P)
2828{ 4057{
2829 if (fs_fd != -2) 4058 if (fs_fd != -2)
2830 return; 4059 return;
2831 4060
2832 fs_fd = -1; 4061 fs_fd = -1;
2833 4062
2834 check_2625 (EV_A); 4063 ev_check_2625 (EV_A);
2835 4064
2836 fs_fd = inotify_init (); 4065 fs_fd = infy_newfd ();
2837 4066
2838 if (fs_fd >= 0) 4067 if (fs_fd >= 0)
2839 { 4068 {
4069 fd_intern (fs_fd);
2840 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4070 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2841 ev_set_priority (&fs_w, EV_MAXPRI); 4071 ev_set_priority (&fs_w, EV_MAXPRI);
2842 ev_io_start (EV_A_ &fs_w); 4072 ev_io_start (EV_A_ &fs_w);
4073 ev_unref (EV_A);
2843 } 4074 }
2844} 4075}
2845 4076
2846inline_size void 4077inline_size void
2847infy_fork (EV_P) 4078infy_fork (EV_P)
… …
2849 int slot; 4080 int slot;
2850 4081
2851 if (fs_fd < 0) 4082 if (fs_fd < 0)
2852 return; 4083 return;
2853 4084
4085 ev_ref (EV_A);
4086 ev_io_stop (EV_A_ &fs_w);
2854 close (fs_fd); 4087 close (fs_fd);
2855 fs_fd = inotify_init (); 4088 fs_fd = infy_newfd ();
2856 4089
4090 if (fs_fd >= 0)
4091 {
4092 fd_intern (fs_fd);
4093 ev_io_set (&fs_w, fs_fd, EV_READ);
4094 ev_io_start (EV_A_ &fs_w);
4095 ev_unref (EV_A);
4096 }
4097
2857 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4098 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2858 { 4099 {
2859 WL w_ = fs_hash [slot].head; 4100 WL w_ = fs_hash [slot].head;
2860 fs_hash [slot].head = 0; 4101 fs_hash [slot].head = 0;
2861 4102
2862 while (w_) 4103 while (w_)
… …
2867 w->wd = -1; 4108 w->wd = -1;
2868 4109
2869 if (fs_fd >= 0) 4110 if (fs_fd >= 0)
2870 infy_add (EV_A_ w); /* re-add, no matter what */ 4111 infy_add (EV_A_ w); /* re-add, no matter what */
2871 else 4112 else
4113 {
4114 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4115 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2872 ev_timer_again (EV_A_ &w->timer); 4116 ev_timer_again (EV_A_ &w->timer);
4117 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4118 }
2873 } 4119 }
2874 } 4120 }
2875} 4121}
2876 4122
2877#endif 4123#endif
… …
2881#else 4127#else
2882# define EV_LSTAT(p,b) lstat (p, b) 4128# define EV_LSTAT(p,b) lstat (p, b)
2883#endif 4129#endif
2884 4130
2885void 4131void
2886ev_stat_stat (EV_P_ ev_stat *w) 4132ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2887{ 4133{
2888 if (lstat (w->path, &w->attr) < 0) 4134 if (lstat (w->path, &w->attr) < 0)
2889 w->attr.st_nlink = 0; 4135 w->attr.st_nlink = 0;
2890 else if (!w->attr.st_nlink) 4136 else if (!w->attr.st_nlink)
2891 w->attr.st_nlink = 1; 4137 w->attr.st_nlink = 1;
… …
2894static void noinline 4140static void noinline
2895stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4141stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2896{ 4142{
2897 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4143 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2898 4144
2899 /* we copy this here each the time so that */ 4145 ev_statdata prev = w->attr;
2900 /* prev has the old value when the callback gets invoked */
2901 w->prev = w->attr;
2902 ev_stat_stat (EV_A_ w); 4146 ev_stat_stat (EV_A_ w);
2903 4147
2904 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4148 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2905 if ( 4149 if (
2906 w->prev.st_dev != w->attr.st_dev 4150 prev.st_dev != w->attr.st_dev
2907 || w->prev.st_ino != w->attr.st_ino 4151 || prev.st_ino != w->attr.st_ino
2908 || w->prev.st_mode != w->attr.st_mode 4152 || prev.st_mode != w->attr.st_mode
2909 || w->prev.st_nlink != w->attr.st_nlink 4153 || prev.st_nlink != w->attr.st_nlink
2910 || w->prev.st_uid != w->attr.st_uid 4154 || prev.st_uid != w->attr.st_uid
2911 || w->prev.st_gid != w->attr.st_gid 4155 || prev.st_gid != w->attr.st_gid
2912 || w->prev.st_rdev != w->attr.st_rdev 4156 || prev.st_rdev != w->attr.st_rdev
2913 || w->prev.st_size != w->attr.st_size 4157 || prev.st_size != w->attr.st_size
2914 || w->prev.st_atime != w->attr.st_atime 4158 || prev.st_atime != w->attr.st_atime
2915 || w->prev.st_mtime != w->attr.st_mtime 4159 || prev.st_mtime != w->attr.st_mtime
2916 || w->prev.st_ctime != w->attr.st_ctime 4160 || prev.st_ctime != w->attr.st_ctime
2917 ) { 4161 ) {
4162 /* we only update w->prev on actual differences */
4163 /* in case we test more often than invoke the callback, */
4164 /* to ensure that prev is always different to attr */
4165 w->prev = prev;
4166
2918 #if EV_USE_INOTIFY 4167 #if EV_USE_INOTIFY
2919 if (fs_fd >= 0) 4168 if (fs_fd >= 0)
2920 { 4169 {
2921 infy_del (EV_A_ w); 4170 infy_del (EV_A_ w);
2922 infy_add (EV_A_ w); 4171 infy_add (EV_A_ w);
… …
2927 ev_feed_event (EV_A_ w, EV_STAT); 4176 ev_feed_event (EV_A_ w, EV_STAT);
2928 } 4177 }
2929} 4178}
2930 4179
2931void 4180void
2932ev_stat_start (EV_P_ ev_stat *w) 4181ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2933{ 4182{
2934 if (expect_false (ev_is_active (w))) 4183 if (expect_false (ev_is_active (w)))
2935 return; 4184 return;
2936 4185
2937 ev_stat_stat (EV_A_ w); 4186 ev_stat_stat (EV_A_ w);
… …
2947 4196
2948 if (fs_fd >= 0) 4197 if (fs_fd >= 0)
2949 infy_add (EV_A_ w); 4198 infy_add (EV_A_ w);
2950 else 4199 else
2951#endif 4200#endif
4201 {
2952 ev_timer_again (EV_A_ &w->timer); 4202 ev_timer_again (EV_A_ &w->timer);
4203 ev_unref (EV_A);
4204 }
2953 4205
2954 ev_start (EV_A_ (W)w, 1); 4206 ev_start (EV_A_ (W)w, 1);
2955 4207
2956 EV_FREQUENT_CHECK; 4208 EV_FREQUENT_CHECK;
2957} 4209}
2958 4210
2959void 4211void
2960ev_stat_stop (EV_P_ ev_stat *w) 4212ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2961{ 4213{
2962 clear_pending (EV_A_ (W)w); 4214 clear_pending (EV_A_ (W)w);
2963 if (expect_false (!ev_is_active (w))) 4215 if (expect_false (!ev_is_active (w)))
2964 return; 4216 return;
2965 4217
2966 EV_FREQUENT_CHECK; 4218 EV_FREQUENT_CHECK;
2967 4219
2968#if EV_USE_INOTIFY 4220#if EV_USE_INOTIFY
2969 infy_del (EV_A_ w); 4221 infy_del (EV_A_ w);
2970#endif 4222#endif
4223
4224 if (ev_is_active (&w->timer))
4225 {
4226 ev_ref (EV_A);
2971 ev_timer_stop (EV_A_ &w->timer); 4227 ev_timer_stop (EV_A_ &w->timer);
4228 }
2972 4229
2973 ev_stop (EV_A_ (W)w); 4230 ev_stop (EV_A_ (W)w);
2974 4231
2975 EV_FREQUENT_CHECK; 4232 EV_FREQUENT_CHECK;
2976} 4233}
2977#endif 4234#endif
2978 4235
2979#if EV_IDLE_ENABLE 4236#if EV_IDLE_ENABLE
2980void 4237void
2981ev_idle_start (EV_P_ ev_idle *w) 4238ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2982{ 4239{
2983 if (expect_false (ev_is_active (w))) 4240 if (expect_false (ev_is_active (w)))
2984 return; 4241 return;
2985 4242
2986 pri_adjust (EV_A_ (W)w); 4243 pri_adjust (EV_A_ (W)w);
… …
2999 4256
3000 EV_FREQUENT_CHECK; 4257 EV_FREQUENT_CHECK;
3001} 4258}
3002 4259
3003void 4260void
3004ev_idle_stop (EV_P_ ev_idle *w) 4261ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3005{ 4262{
3006 clear_pending (EV_A_ (W)w); 4263 clear_pending (EV_A_ (W)w);
3007 if (expect_false (!ev_is_active (w))) 4264 if (expect_false (!ev_is_active (w)))
3008 return; 4265 return;
3009 4266
… …
3021 4278
3022 EV_FREQUENT_CHECK; 4279 EV_FREQUENT_CHECK;
3023} 4280}
3024#endif 4281#endif
3025 4282
4283#if EV_PREPARE_ENABLE
3026void 4284void
3027ev_prepare_start (EV_P_ ev_prepare *w) 4285ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3028{ 4286{
3029 if (expect_false (ev_is_active (w))) 4287 if (expect_false (ev_is_active (w)))
3030 return; 4288 return;
3031 4289
3032 EV_FREQUENT_CHECK; 4290 EV_FREQUENT_CHECK;
… …
3037 4295
3038 EV_FREQUENT_CHECK; 4296 EV_FREQUENT_CHECK;
3039} 4297}
3040 4298
3041void 4299void
3042ev_prepare_stop (EV_P_ ev_prepare *w) 4300ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3043{ 4301{
3044 clear_pending (EV_A_ (W)w); 4302 clear_pending (EV_A_ (W)w);
3045 if (expect_false (!ev_is_active (w))) 4303 if (expect_false (!ev_is_active (w)))
3046 return; 4304 return;
3047 4305
… …
3056 4314
3057 ev_stop (EV_A_ (W)w); 4315 ev_stop (EV_A_ (W)w);
3058 4316
3059 EV_FREQUENT_CHECK; 4317 EV_FREQUENT_CHECK;
3060} 4318}
4319#endif
3061 4320
4321#if EV_CHECK_ENABLE
3062void 4322void
3063ev_check_start (EV_P_ ev_check *w) 4323ev_check_start (EV_P_ ev_check *w) EV_THROW
3064{ 4324{
3065 if (expect_false (ev_is_active (w))) 4325 if (expect_false (ev_is_active (w)))
3066 return; 4326 return;
3067 4327
3068 EV_FREQUENT_CHECK; 4328 EV_FREQUENT_CHECK;
… …
3073 4333
3074 EV_FREQUENT_CHECK; 4334 EV_FREQUENT_CHECK;
3075} 4335}
3076 4336
3077void 4337void
3078ev_check_stop (EV_P_ ev_check *w) 4338ev_check_stop (EV_P_ ev_check *w) EV_THROW
3079{ 4339{
3080 clear_pending (EV_A_ (W)w); 4340 clear_pending (EV_A_ (W)w);
3081 if (expect_false (!ev_is_active (w))) 4341 if (expect_false (!ev_is_active (w)))
3082 return; 4342 return;
3083 4343
… …
3092 4352
3093 ev_stop (EV_A_ (W)w); 4353 ev_stop (EV_A_ (W)w);
3094 4354
3095 EV_FREQUENT_CHECK; 4355 EV_FREQUENT_CHECK;
3096} 4356}
4357#endif
3097 4358
3098#if EV_EMBED_ENABLE 4359#if EV_EMBED_ENABLE
3099void noinline 4360void noinline
3100ev_embed_sweep (EV_P_ ev_embed *w) 4361ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3101{ 4362{
3102 ev_loop (w->other, EVLOOP_NONBLOCK); 4363 ev_run (w->other, EVRUN_NOWAIT);
3103} 4364}
3104 4365
3105static void 4366static void
3106embed_io_cb (EV_P_ ev_io *io, int revents) 4367embed_io_cb (EV_P_ ev_io *io, int revents)
3107{ 4368{
3108 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4369 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3109 4370
3110 if (ev_cb (w)) 4371 if (ev_cb (w))
3111 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4372 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3112 else 4373 else
3113 ev_loop (w->other, EVLOOP_NONBLOCK); 4374 ev_run (w->other, EVRUN_NOWAIT);
3114} 4375}
3115 4376
3116static void 4377static void
3117embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4378embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3118{ 4379{
3119 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4380 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3120 4381
3121 { 4382 {
3122 struct ev_loop *loop = w->other; 4383 EV_P = w->other;
3123 4384
3124 while (fdchangecnt) 4385 while (fdchangecnt)
3125 { 4386 {
3126 fd_reify (EV_A); 4387 fd_reify (EV_A);
3127 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4388 ev_run (EV_A_ EVRUN_NOWAIT);
3128 } 4389 }
3129 } 4390 }
3130} 4391}
3131 4392
3132static void 4393static void
… …
3135 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4396 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3136 4397
3137 ev_embed_stop (EV_A_ w); 4398 ev_embed_stop (EV_A_ w);
3138 4399
3139 { 4400 {
3140 struct ev_loop *loop = w->other; 4401 EV_P = w->other;
3141 4402
3142 ev_loop_fork (EV_A); 4403 ev_loop_fork (EV_A);
3143 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4404 ev_run (EV_A_ EVRUN_NOWAIT);
3144 } 4405 }
3145 4406
3146 ev_embed_start (EV_A_ w); 4407 ev_embed_start (EV_A_ w);
3147} 4408}
3148 4409
… …
3153 ev_idle_stop (EV_A_ idle); 4414 ev_idle_stop (EV_A_ idle);
3154} 4415}
3155#endif 4416#endif
3156 4417
3157void 4418void
3158ev_embed_start (EV_P_ ev_embed *w) 4419ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3159{ 4420{
3160 if (expect_false (ev_is_active (w))) 4421 if (expect_false (ev_is_active (w)))
3161 return; 4422 return;
3162 4423
3163 { 4424 {
3164 struct ev_loop *loop = w->other; 4425 EV_P = w->other;
3165 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4426 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3166 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4427 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3167 } 4428 }
3168 4429
3169 EV_FREQUENT_CHECK; 4430 EV_FREQUENT_CHECK;
… …
3184 4445
3185 EV_FREQUENT_CHECK; 4446 EV_FREQUENT_CHECK;
3186} 4447}
3187 4448
3188void 4449void
3189ev_embed_stop (EV_P_ ev_embed *w) 4450ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3190{ 4451{
3191 clear_pending (EV_A_ (W)w); 4452 clear_pending (EV_A_ (W)w);
3192 if (expect_false (!ev_is_active (w))) 4453 if (expect_false (!ev_is_active (w)))
3193 return; 4454 return;
3194 4455
… …
3196 4457
3197 ev_io_stop (EV_A_ &w->io); 4458 ev_io_stop (EV_A_ &w->io);
3198 ev_prepare_stop (EV_A_ &w->prepare); 4459 ev_prepare_stop (EV_A_ &w->prepare);
3199 ev_fork_stop (EV_A_ &w->fork); 4460 ev_fork_stop (EV_A_ &w->fork);
3200 4461
4462 ev_stop (EV_A_ (W)w);
4463
3201 EV_FREQUENT_CHECK; 4464 EV_FREQUENT_CHECK;
3202} 4465}
3203#endif 4466#endif
3204 4467
3205#if EV_FORK_ENABLE 4468#if EV_FORK_ENABLE
3206void 4469void
3207ev_fork_start (EV_P_ ev_fork *w) 4470ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3208{ 4471{
3209 if (expect_false (ev_is_active (w))) 4472 if (expect_false (ev_is_active (w)))
3210 return; 4473 return;
3211 4474
3212 EV_FREQUENT_CHECK; 4475 EV_FREQUENT_CHECK;
… …
3217 4480
3218 EV_FREQUENT_CHECK; 4481 EV_FREQUENT_CHECK;
3219} 4482}
3220 4483
3221void 4484void
3222ev_fork_stop (EV_P_ ev_fork *w) 4485ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3223{ 4486{
3224 clear_pending (EV_A_ (W)w); 4487 clear_pending (EV_A_ (W)w);
3225 if (expect_false (!ev_is_active (w))) 4488 if (expect_false (!ev_is_active (w)))
3226 return; 4489 return;
3227 4490
… …
3238 4501
3239 EV_FREQUENT_CHECK; 4502 EV_FREQUENT_CHECK;
3240} 4503}
3241#endif 4504#endif
3242 4505
4506#if EV_CLEANUP_ENABLE
4507void
4508ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4509{
4510 if (expect_false (ev_is_active (w)))
4511 return;
4512
4513 EV_FREQUENT_CHECK;
4514
4515 ev_start (EV_A_ (W)w, ++cleanupcnt);
4516 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4517 cleanups [cleanupcnt - 1] = w;
4518
4519 /* cleanup watchers should never keep a refcount on the loop */
4520 ev_unref (EV_A);
4521 EV_FREQUENT_CHECK;
4522}
4523
4524void
4525ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4526{
4527 clear_pending (EV_A_ (W)w);
4528 if (expect_false (!ev_is_active (w)))
4529 return;
4530
4531 EV_FREQUENT_CHECK;
4532 ev_ref (EV_A);
4533
4534 {
4535 int active = ev_active (w);
4536
4537 cleanups [active - 1] = cleanups [--cleanupcnt];
4538 ev_active (cleanups [active - 1]) = active;
4539 }
4540
4541 ev_stop (EV_A_ (W)w);
4542
4543 EV_FREQUENT_CHECK;
4544}
4545#endif
4546
3243#if EV_ASYNC_ENABLE 4547#if EV_ASYNC_ENABLE
3244void 4548void
3245ev_async_start (EV_P_ ev_async *w) 4549ev_async_start (EV_P_ ev_async *w) EV_THROW
3246{ 4550{
3247 if (expect_false (ev_is_active (w))) 4551 if (expect_false (ev_is_active (w)))
3248 return; 4552 return;
4553
4554 w->sent = 0;
3249 4555
3250 evpipe_init (EV_A); 4556 evpipe_init (EV_A);
3251 4557
3252 EV_FREQUENT_CHECK; 4558 EV_FREQUENT_CHECK;
3253 4559
… …
3257 4563
3258 EV_FREQUENT_CHECK; 4564 EV_FREQUENT_CHECK;
3259} 4565}
3260 4566
3261void 4567void
3262ev_async_stop (EV_P_ ev_async *w) 4568ev_async_stop (EV_P_ ev_async *w) EV_THROW
3263{ 4569{
3264 clear_pending (EV_A_ (W)w); 4570 clear_pending (EV_A_ (W)w);
3265 if (expect_false (!ev_is_active (w))) 4571 if (expect_false (!ev_is_active (w)))
3266 return; 4572 return;
3267 4573
… …
3278 4584
3279 EV_FREQUENT_CHECK; 4585 EV_FREQUENT_CHECK;
3280} 4586}
3281 4587
3282void 4588void
3283ev_async_send (EV_P_ ev_async *w) 4589ev_async_send (EV_P_ ev_async *w) EV_THROW
3284{ 4590{
3285 w->sent = 1; 4591 w->sent = 1;
3286 evpipe_write (EV_A_ &gotasync); 4592 evpipe_write (EV_A_ &async_pending);
3287} 4593}
3288#endif 4594#endif
3289 4595
3290/*****************************************************************************/ 4596/*****************************************************************************/
3291 4597
… …
3325 4631
3326 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4632 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3327} 4633}
3328 4634
3329void 4635void
3330ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4636ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3331{ 4637{
3332 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4638 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3333 4639
3334 if (expect_false (!once)) 4640 if (expect_false (!once))
3335 { 4641 {
3336 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4642 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3337 return; 4643 return;
3338 } 4644 }
3339 4645
3340 once->cb = cb; 4646 once->cb = cb;
3341 once->arg = arg; 4647 once->arg = arg;
… …
3356} 4662}
3357 4663
3358/*****************************************************************************/ 4664/*****************************************************************************/
3359 4665
3360#if EV_WALK_ENABLE 4666#if EV_WALK_ENABLE
3361void 4667void ecb_cold
3362ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4668ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3363{ 4669{
3364 int i, j; 4670 int i, j;
3365 ev_watcher_list *wl, *wn; 4671 ev_watcher_list *wl, *wn;
3366 4672
3367 if (types & (EV_IO | EV_EMBED)) 4673 if (types & (EV_IO | EV_EMBED))
… …
3410 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4716 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3411#endif 4717#endif
3412 4718
3413#if EV_IDLE_ENABLE 4719#if EV_IDLE_ENABLE
3414 if (types & EV_IDLE) 4720 if (types & EV_IDLE)
3415 for (j = NUMPRI; i--; ) 4721 for (j = NUMPRI; j--; )
3416 for (i = idlecnt [j]; i--; ) 4722 for (i = idlecnt [j]; i--; )
3417 cb (EV_A_ EV_IDLE, idles [j][i]); 4723 cb (EV_A_ EV_IDLE, idles [j][i]);
3418#endif 4724#endif
3419 4725
3420#if EV_FORK_ENABLE 4726#if EV_FORK_ENABLE
… …
3428 if (types & EV_ASYNC) 4734 if (types & EV_ASYNC)
3429 for (i = asynccnt; i--; ) 4735 for (i = asynccnt; i--; )
3430 cb (EV_A_ EV_ASYNC, asyncs [i]); 4736 cb (EV_A_ EV_ASYNC, asyncs [i]);
3431#endif 4737#endif
3432 4738
4739#if EV_PREPARE_ENABLE
3433 if (types & EV_PREPARE) 4740 if (types & EV_PREPARE)
3434 for (i = preparecnt; i--; ) 4741 for (i = preparecnt; i--; )
3435#if EV_EMBED_ENABLE 4742# if EV_EMBED_ENABLE
3436 if (ev_cb (prepares [i]) != embed_prepare_cb) 4743 if (ev_cb (prepares [i]) != embed_prepare_cb)
3437#endif 4744# endif
3438 cb (EV_A_ EV_PREPARE, prepares [i]); 4745 cb (EV_A_ EV_PREPARE, prepares [i]);
4746#endif
3439 4747
4748#if EV_CHECK_ENABLE
3440 if (types & EV_CHECK) 4749 if (types & EV_CHECK)
3441 for (i = checkcnt; i--; ) 4750 for (i = checkcnt; i--; )
3442 cb (EV_A_ EV_CHECK, checks [i]); 4751 cb (EV_A_ EV_CHECK, checks [i]);
4752#endif
3443 4753
4754#if EV_SIGNAL_ENABLE
3444 if (types & EV_SIGNAL) 4755 if (types & EV_SIGNAL)
3445 for (i = 0; i < signalmax; ++i) 4756 for (i = 0; i < EV_NSIG - 1; ++i)
3446 for (wl = signals [i].head; wl; ) 4757 for (wl = signals [i].head; wl; )
3447 { 4758 {
3448 wn = wl->next; 4759 wn = wl->next;
3449 cb (EV_A_ EV_SIGNAL, wl); 4760 cb (EV_A_ EV_SIGNAL, wl);
3450 wl = wn; 4761 wl = wn;
3451 } 4762 }
4763#endif
3452 4764
4765#if EV_CHILD_ENABLE
3453 if (types & EV_CHILD) 4766 if (types & EV_CHILD)
3454 for (i = EV_PID_HASHSIZE; i--; ) 4767 for (i = (EV_PID_HASHSIZE); i--; )
3455 for (wl = childs [i]; wl; ) 4768 for (wl = childs [i]; wl; )
3456 { 4769 {
3457 wn = wl->next; 4770 wn = wl->next;
3458 cb (EV_A_ EV_CHILD, wl); 4771 cb (EV_A_ EV_CHILD, wl);
3459 wl = wn; 4772 wl = wn;
3460 } 4773 }
4774#endif
3461/* EV_STAT 0x00001000 /* stat data changed */ 4775/* EV_STAT 0x00001000 /* stat data changed */
3462/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4776/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3463} 4777}
3464#endif 4778#endif
3465 4779
3466#if EV_MULTIPLICITY 4780#if EV_MULTIPLICITY
3467 #include "ev_wrap.h" 4781 #include "ev_wrap.h"
3468#endif 4782#endif
3469 4783
3470#ifdef __cplusplus
3471}
3472#endif
3473

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines