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Comparing libev/ev.c (file contents):
Revision 1.288 by root, Sat Apr 25 14:12:48 2009 UTC vs.
Revision 1.453 by root, Thu Feb 28 00:33:25 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
64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0
62# endif 66# endif
63 67
64# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
65# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
66# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
… …
75# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
77# endif 81# endif
78# endif 82# endif
79 83
84# if HAVE_NANOSLEEP
80# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
81# if HAVE_NANOSLEEP
82# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
83# else 88# else
89# undef EV_USE_NANOSLEEP
84# 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
85# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
86# endif 100# endif
87 101
102# if HAVE_POLL && HAVE_POLL_H
88# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
89# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
90# define EV_USE_SELECT 1
91# else
92# define EV_USE_SELECT 0
93# endif 105# endif
94# endif
95
96# ifndef EV_USE_POLL
97# if HAVE_POLL && HAVE_POLL_H
98# define EV_USE_POLL 1
99# else 106# else
107# undef EV_USE_POLL
100# define EV_USE_POLL 0 108# define EV_USE_POLL 0
101# endif
102# endif 109# endif
103 110
104# ifndef EV_USE_EPOLL
105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
106# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
107# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
108# define EV_USE_EPOLL 0
109# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
110# endif 118# endif
111 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
112# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
113# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
114# define EV_USE_KQUEUE 1
115# else
116# define EV_USE_KQUEUE 0
117# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
118# endif 127# endif
119 128
120# ifndef EV_USE_PORT
121# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
122# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
123# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
124# define EV_USE_PORT 0
125# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
126# endif 136# endif
127 137
128# ifndef EV_USE_INOTIFY
129# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
130# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
131# else
132# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
133# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
134# endif 145# endif
135 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
136# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
137# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
138# define EV_USE_EVENTFD 1
139# else
140# define EV_USE_EVENTFD 0
141# 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
142# endif 163# endif
143 164
144#endif 165#endif
145 166
146#include <math.h>
147#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
148#include <fcntl.h> 169#include <fcntl.h>
149#include <stddef.h> 170#include <stddef.h>
150 171
151#include <stdio.h> 172#include <stdio.h>
152 173
153#include <assert.h> 174#include <assert.h>
154#include <errno.h> 175#include <errno.h>
155#include <sys/types.h> 176#include <sys/types.h>
156#include <time.h> 177#include <time.h>
178#include <limits.h>
157 179
158#include <signal.h> 180#include <signal.h>
159 181
160#ifdef EV_H 182#ifdef EV_H
161# include EV_H 183# include EV_H
162#else 184#else
163# 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
164#endif 197#endif
165 198
166#ifndef _WIN32 199#ifndef _WIN32
167# include <sys/time.h> 200# include <sys/time.h>
168# include <sys/wait.h> 201# include <sys/wait.h>
169# include <unistd.h> 202# include <unistd.h>
170#else 203#else
171# include <io.h> 204# include <io.h>
172# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
173# include <windows.h> 207# include <windows.h>
174# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
176# endif 210# endif
211# undef EV_AVOID_STDIO
177#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
178 221
179/* 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
180 255
181#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 259# else
185# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
186# endif 261# endif
187#endif 262#endif
188 263
189#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 266# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 267# else
193# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
194# endif 269# endif
195#endif 270#endif
196 271
… …
198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 274#endif
200 275
201#ifndef EV_USE_NANOSLEEP 276#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 277# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 278# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 279# else
205# define EV_USE_NANOSLEEP 0 280# define EV_USE_NANOSLEEP 0
206# endif 281# endif
207#endif 282#endif
208 283
209#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 286#endif
212 287
213#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
214# ifdef _WIN32 289# ifdef _WIN32
215# define EV_USE_POLL 0 290# define EV_USE_POLL 0
216# else 291# else
217# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 293# endif
219#endif 294#endif
220 295
221#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 299# else
225# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
226# endif 301# endif
227#endif 302#endif
228 303
… …
234# define EV_USE_PORT 0 309# define EV_USE_PORT 0
235#endif 310#endif
236 311
237#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 315# else
241# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
242# endif 317# endif
243#endif 318#endif
244 319
245#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 321# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
247# define EV_PID_HASHSIZE 1
248# else
249# define EV_PID_HASHSIZE 16
250# endif
251#endif 322#endif
252 323
253#ifndef EV_INOTIFY_HASHSIZE 324#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 325# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
255# define EV_INOTIFY_HASHSIZE 1
256# else
257# define EV_INOTIFY_HASHSIZE 16
258# endif
259#endif 326#endif
260 327
261#ifndef EV_USE_EVENTFD 328#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 330# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 331# else
265# 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
266# endif 341# endif
267#endif 342#endif
268 343
269#if 0 /* debugging */ 344#if 0 /* debugging */
270# define EV_VERIFY 3 345# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 346# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 347# define EV_HEAP_CACHE_AT 1
273#endif 348#endif
274 349
275#ifndef EV_VERIFY 350#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 352#endif
278 353
279#ifndef EV_USE_4HEAP 354#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 355# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 356#endif
282 357
283#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
360#endif
361
362#ifdef ANDROID
363/* supposedly, android doesn't typedef fd_mask */
364# undef EV_USE_SELECT
365# define EV_USE_SELECT 0
366/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
367# undef EV_USE_CLOCK_SYSCALL
368# define EV_USE_CLOCK_SYSCALL 0
369#endif
370
371/* aix's poll.h seems to cause lots of trouble */
372#ifdef _AIX
373/* AIX has a completely broken poll.h header */
374# undef EV_USE_POLL
375# define EV_USE_POLL 0
376#endif
377
378/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
379/* which makes programs even slower. might work on other unices, too. */
380#if EV_USE_CLOCK_SYSCALL
381# include <sys/syscall.h>
382# ifdef SYS_clock_gettime
383# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
384# undef EV_USE_MONOTONIC
385# define EV_USE_MONOTONIC 1
386# else
387# undef EV_USE_CLOCK_SYSCALL
388# define EV_USE_CLOCK_SYSCALL 0
389# endif
285#endif 390#endif
286 391
287/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 392/* this block fixes any misconfiguration where we know we run into trouble otherwise */
288 393
289#ifndef CLOCK_MONOTONIC 394#ifndef CLOCK_MONOTONIC
… …
300# undef EV_USE_INOTIFY 405# undef EV_USE_INOTIFY
301# define EV_USE_INOTIFY 0 406# define EV_USE_INOTIFY 0
302#endif 407#endif
303 408
304#if !EV_USE_NANOSLEEP 409#if !EV_USE_NANOSLEEP
305# ifndef _WIN32 410/* hp-ux has it in sys/time.h, which we unconditionally include above */
411# if !defined _WIN32 && !defined __hpux
306# include <sys/select.h> 412# include <sys/select.h>
307# endif 413# endif
308#endif 414#endif
309 415
310#if EV_USE_INOTIFY 416#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h> 417# include <sys/statfs.h>
313# include <sys/inotify.h> 418# include <sys/inotify.h>
314/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 419/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
315# ifndef IN_DONT_FOLLOW 420# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY 421# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 422# define EV_USE_INOTIFY 0
318# endif 423# endif
319#endif 424#endif
320 425
321#if EV_SELECT_IS_WINSOCKET
322# include <winsock.h>
323#endif
324
325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
331# define EV_USE_MONOTONIC 1
332#endif
333
334#if EV_USE_EVENTFD 426#if EV_USE_EVENTFD
335/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336# include <stdint.h> 428# include <stdint.h>
337# ifdef __cplusplus 429# ifndef EFD_NONBLOCK
338extern "C" { 430# define EFD_NONBLOCK O_NONBLOCK
339# endif 431# endif
340int eventfd (unsigned int initval, int flags); 432# ifndef EFD_CLOEXEC
341# ifdef __cplusplus 433# ifdef O_CLOEXEC
342} 434# define EFD_CLOEXEC O_CLOEXEC
435# else
436# define EFD_CLOEXEC 02000000
437# endif
343# endif 438# endif
439EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
440#endif
441
442#if EV_USE_SIGNALFD
443/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
444# include <stdint.h>
445# ifndef SFD_NONBLOCK
446# define SFD_NONBLOCK O_NONBLOCK
447# endif
448# ifndef SFD_CLOEXEC
449# ifdef O_CLOEXEC
450# define SFD_CLOEXEC O_CLOEXEC
451# else
452# define SFD_CLOEXEC 02000000
453# endif
454# endif
455EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
456
457struct signalfd_siginfo
458{
459 uint32_t ssi_signo;
460 char pad[128 - sizeof (uint32_t)];
461};
344#endif 462#endif
345 463
346/**/ 464/**/
347 465
348#if EV_VERIFY >= 3 466#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 467# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 468#else
351# define EV_FREQUENT_CHECK do { } while (0) 469# define EV_FREQUENT_CHECK do { } while (0)
352#endif 470#endif
353 471
354/* 472/*
355 * This is used to avoid floating point rounding problems. 473 * This is used to work around floating point rounding problems.
356 * It is added to ev_rt_now when scheduling periodics
357 * to ensure progress, time-wise, even when rounding
358 * errors are against us.
359 * This value is good at least till the year 4000. 474 * This value is good at least till the year 4000.
360 * Better solutions welcome.
361 */ 475 */
362#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 476#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
477/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
363 478
364#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 479#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
365#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 480#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
366/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
367 481
482#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
483#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
484
485/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
486/* ECB.H BEGIN */
487/*
488 * libecb - http://software.schmorp.de/pkg/libecb
489 *
490 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
491 * Copyright (©) 2011 Emanuele Giaquinta
492 * All rights reserved.
493 *
494 * Redistribution and use in source and binary forms, with or without modifica-
495 * tion, are permitted provided that the following conditions are met:
496 *
497 * 1. Redistributions of source code must retain the above copyright notice,
498 * this list of conditions and the following disclaimer.
499 *
500 * 2. Redistributions in binary form must reproduce the above copyright
501 * notice, this list of conditions and the following disclaimer in the
502 * documentation and/or other materials provided with the distribution.
503 *
504 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
505 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
506 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
507 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
508 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
509 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
510 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
511 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
512 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
513 * OF THE POSSIBILITY OF SUCH DAMAGE.
514 */
515
516#ifndef ECB_H
517#define ECB_H
518
519/* 16 bits major, 16 bits minor */
520#define ECB_VERSION 0x00010002
521
522#ifdef _WIN32
523 typedef signed char int8_t;
524 typedef unsigned char uint8_t;
525 typedef signed short int16_t;
526 typedef unsigned short uint16_t;
527 typedef signed int int32_t;
528 typedef unsigned int uint32_t;
368#if __GNUC__ >= 4 529 #if __GNUC__
369# define expect(expr,value) __builtin_expect ((expr),(value)) 530 typedef signed long long int64_t;
370# define noinline __attribute__ ((noinline)) 531 typedef unsigned long long uint64_t;
532 #else /* _MSC_VER || __BORLANDC__ */
533 typedef signed __int64 int64_t;
534 typedef unsigned __int64 uint64_t;
535 #endif
536 #ifdef _WIN64
537 #define ECB_PTRSIZE 8
538 typedef uint64_t uintptr_t;
539 typedef int64_t intptr_t;
540 #else
541 #define ECB_PTRSIZE 4
542 typedef uint32_t uintptr_t;
543 typedef int32_t intptr_t;
544 #endif
371#else 545#else
372# define expect(expr,value) (expr) 546 #include <inttypes.h>
373# define noinline 547 #if UINTMAX_MAX > 0xffffffffU
374# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 548 #define ECB_PTRSIZE 8
375# define inline 549 #else
550 #define ECB_PTRSIZE 4
551 #endif
376# endif 552#endif
553
554/* many compilers define _GNUC_ to some versions but then only implement
555 * what their idiot authors think are the "more important" extensions,
556 * causing enormous grief in return for some better fake benchmark numbers.
557 * or so.
558 * we try to detect these and simply assume they are not gcc - if they have
559 * an issue with that they should have done it right in the first place.
560 */
561#ifndef ECB_GCC_VERSION
562 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
563 #define ECB_GCC_VERSION(major,minor) 0
564 #else
565 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
377#endif 566 #endif
567#endif
378 568
569#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
570#define ECB_C99 (__STDC_VERSION__ >= 199901L)
571#define ECB_C11 (__STDC_VERSION__ >= 201112L)
572#define ECB_CPP (__cplusplus+0)
573#define ECB_CPP11 (__cplusplus >= 201103L)
574
575#if ECB_CPP
576 #define ECB_EXTERN_C extern "C"
577 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
578 #define ECB_EXTERN_C_END }
579#else
580 #define ECB_EXTERN_C extern
581 #define ECB_EXTERN_C_BEG
582 #define ECB_EXTERN_C_END
583#endif
584
585/*****************************************************************************/
586
587/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
588/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
589
590#if ECB_NO_THREADS
591 #define ECB_NO_SMP 1
592#endif
593
594#if ECB_NO_SMP
595 #define ECB_MEMORY_FENCE do { } while (0)
596#endif
597
598#ifndef ECB_MEMORY_FENCE
599 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
600 #if __i386 || __i386__
601 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
602 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
603 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
604 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
606 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
607 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
608 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
609 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
610 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
611 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
612 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
613 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
614 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
616 #elif __sparc || __sparc__
617 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
618 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
619 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
620 #elif defined __s390__ || defined __s390x__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
622 #elif defined __mips__
623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
624 #elif defined __alpha__
625 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
626 #elif defined __hppa__
627 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
629 #elif defined __ia64__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
631 #endif
632 #endif
633#endif
634
635#ifndef ECB_MEMORY_FENCE
636 #if ECB_GCC_VERSION(4,7)
637 /* see comment below (stdatomic.h) about the C11 memory model. */
638 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
639
640 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
641 * without risking compile time errors with other compilers. We *could*
642 * define our own ecb_clang_has_feature, but I just can't be bothered to work
643 * around this shit time and again.
644 * #elif defined __clang && __has_feature (cxx_atomic)
645 * // see comment below (stdatomic.h) about the C11 memory model.
646 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
647 */
648
649 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
650 #define ECB_MEMORY_FENCE __sync_synchronize ()
651 #elif _MSC_VER >= 1400 /* VC++ 2005 */
652 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
653 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
654 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
655 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
656 #elif defined _WIN32
657 #include <WinNT.h>
658 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
659 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
660 #include <mbarrier.h>
661 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
662 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
663 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
664 #elif __xlC__
665 #define ECB_MEMORY_FENCE __sync ()
666 #endif
667#endif
668
669#ifndef ECB_MEMORY_FENCE
670 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
671 /* we assume that these memory fences work on all variables/all memory accesses, */
672 /* not just C11 atomics and atomic accesses */
673 #include <stdatomic.h>
674 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
675 /* any fence other than seq_cst, which isn't very efficient for us. */
676 /* Why that is, we don't know - either the C11 memory model is quite useless */
677 /* for most usages, or gcc and clang have a bug */
678 /* I *currently* lean towards the latter, and inefficiently implement */
679 /* all three of ecb's fences as a seq_cst fence */
680 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
681 #endif
682#endif
683
684#ifndef ECB_MEMORY_FENCE
685 #if !ECB_AVOID_PTHREADS
686 /*
687 * if you get undefined symbol references to pthread_mutex_lock,
688 * or failure to find pthread.h, then you should implement
689 * the ECB_MEMORY_FENCE operations for your cpu/compiler
690 * OR provide pthread.h and link against the posix thread library
691 * of your system.
692 */
693 #include <pthread.h>
694 #define ECB_NEEDS_PTHREADS 1
695 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
696
697 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
698 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
699 #endif
700#endif
701
702#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
703 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
704#endif
705
706#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
707 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
708#endif
709
710/*****************************************************************************/
711
712#if __cplusplus
713 #define ecb_inline static inline
714#elif ECB_GCC_VERSION(2,5)
715 #define ecb_inline static __inline__
716#elif ECB_C99
717 #define ecb_inline static inline
718#else
719 #define ecb_inline static
720#endif
721
722#if ECB_GCC_VERSION(3,3)
723 #define ecb_restrict __restrict__
724#elif ECB_C99
725 #define ecb_restrict restrict
726#else
727 #define ecb_restrict
728#endif
729
730typedef int ecb_bool;
731
732#define ECB_CONCAT_(a, b) a ## b
733#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
734#define ECB_STRINGIFY_(a) # a
735#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
736
737#define ecb_function_ ecb_inline
738
739#if ECB_GCC_VERSION(3,1)
740 #define ecb_attribute(attrlist) __attribute__(attrlist)
741 #define ecb_is_constant(expr) __builtin_constant_p (expr)
742 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
743 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
744#else
745 #define ecb_attribute(attrlist)
746 #define ecb_is_constant(expr) 0
747 #define ecb_expect(expr,value) (expr)
748 #define ecb_prefetch(addr,rw,locality)
749#endif
750
751/* no emulation for ecb_decltype */
752#if ECB_GCC_VERSION(4,5)
753 #define ecb_decltype(x) __decltype(x)
754#elif ECB_GCC_VERSION(3,0)
755 #define ecb_decltype(x) __typeof(x)
756#endif
757
758#define ecb_noinline ecb_attribute ((__noinline__))
759#define ecb_unused ecb_attribute ((__unused__))
760#define ecb_const ecb_attribute ((__const__))
761#define ecb_pure ecb_attribute ((__pure__))
762
763#if ECB_C11
764 #define ecb_noreturn _Noreturn
765#else
766 #define ecb_noreturn ecb_attribute ((__noreturn__))
767#endif
768
769#if ECB_GCC_VERSION(4,3)
770 #define ecb_artificial ecb_attribute ((__artificial__))
771 #define ecb_hot ecb_attribute ((__hot__))
772 #define ecb_cold ecb_attribute ((__cold__))
773#else
774 #define ecb_artificial
775 #define ecb_hot
776 #define ecb_cold
777#endif
778
779/* put around conditional expressions if you are very sure that the */
780/* expression is mostly true or mostly false. note that these return */
781/* booleans, not the expression. */
379#define expect_false(expr) expect ((expr) != 0, 0) 782#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 783#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
784/* for compatibility to the rest of the world */
785#define ecb_likely(expr) ecb_expect_true (expr)
786#define ecb_unlikely(expr) ecb_expect_false (expr)
787
788/* count trailing zero bits and count # of one bits */
789#if ECB_GCC_VERSION(3,4)
790 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
791 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
792 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
793 #define ecb_ctz32(x) __builtin_ctz (x)
794 #define ecb_ctz64(x) __builtin_ctzll (x)
795 #define ecb_popcount32(x) __builtin_popcount (x)
796 /* no popcountll */
797#else
798 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
799 ecb_function_ int
800 ecb_ctz32 (uint32_t x)
801 {
802 int r = 0;
803
804 x &= ~x + 1; /* this isolates the lowest bit */
805
806#if ECB_branchless_on_i386
807 r += !!(x & 0xaaaaaaaa) << 0;
808 r += !!(x & 0xcccccccc) << 1;
809 r += !!(x & 0xf0f0f0f0) << 2;
810 r += !!(x & 0xff00ff00) << 3;
811 r += !!(x & 0xffff0000) << 4;
812#else
813 if (x & 0xaaaaaaaa) r += 1;
814 if (x & 0xcccccccc) r += 2;
815 if (x & 0xf0f0f0f0) r += 4;
816 if (x & 0xff00ff00) r += 8;
817 if (x & 0xffff0000) r += 16;
818#endif
819
820 return r;
821 }
822
823 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
824 ecb_function_ int
825 ecb_ctz64 (uint64_t x)
826 {
827 int shift = x & 0xffffffffU ? 0 : 32;
828 return ecb_ctz32 (x >> shift) + shift;
829 }
830
831 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
832 ecb_function_ int
833 ecb_popcount32 (uint32_t x)
834 {
835 x -= (x >> 1) & 0x55555555;
836 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
837 x = ((x >> 4) + x) & 0x0f0f0f0f;
838 x *= 0x01010101;
839
840 return x >> 24;
841 }
842
843 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
844 ecb_function_ int ecb_ld32 (uint32_t x)
845 {
846 int r = 0;
847
848 if (x >> 16) { x >>= 16; r += 16; }
849 if (x >> 8) { x >>= 8; r += 8; }
850 if (x >> 4) { x >>= 4; r += 4; }
851 if (x >> 2) { x >>= 2; r += 2; }
852 if (x >> 1) { r += 1; }
853
854 return r;
855 }
856
857 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
858 ecb_function_ int ecb_ld64 (uint64_t x)
859 {
860 int r = 0;
861
862 if (x >> 32) { x >>= 32; r += 32; }
863
864 return r + ecb_ld32 (x);
865 }
866#endif
867
868ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
869ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
870ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
871ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
872
873ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
874ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
875{
876 return ( (x * 0x0802U & 0x22110U)
877 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
878}
879
880ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
881ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
882{
883 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
884 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
885 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
886 x = ( x >> 8 ) | ( x << 8);
887
888 return x;
889}
890
891ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
892ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
893{
894 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
895 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
896 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
897 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
898 x = ( x >> 16 ) | ( x << 16);
899
900 return x;
901}
902
903/* popcount64 is only available on 64 bit cpus as gcc builtin */
904/* so for this version we are lazy */
905ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
906ecb_function_ int
907ecb_popcount64 (uint64_t x)
908{
909 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
910}
911
912ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
913ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
914ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
915ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
916ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
917ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
918ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
919ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
920
921ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
922ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
923ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
924ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
925ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
926ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
927ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
928ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
929
930#if ECB_GCC_VERSION(4,3)
931 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
932 #define ecb_bswap32(x) __builtin_bswap32 (x)
933 #define ecb_bswap64(x) __builtin_bswap64 (x)
934#else
935 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
936 ecb_function_ uint16_t
937 ecb_bswap16 (uint16_t x)
938 {
939 return ecb_rotl16 (x, 8);
940 }
941
942 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
943 ecb_function_ uint32_t
944 ecb_bswap32 (uint32_t x)
945 {
946 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
947 }
948
949 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
950 ecb_function_ uint64_t
951 ecb_bswap64 (uint64_t x)
952 {
953 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
954 }
955#endif
956
957#if ECB_GCC_VERSION(4,5)
958 #define ecb_unreachable() __builtin_unreachable ()
959#else
960 /* this seems to work fine, but gcc always emits a warning for it :/ */
961 ecb_inline void ecb_unreachable (void) ecb_noreturn;
962 ecb_inline void ecb_unreachable (void) { }
963#endif
964
965/* try to tell the compiler that some condition is definitely true */
966#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
967
968ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
969ecb_inline unsigned char
970ecb_byteorder_helper (void)
971{
972 /* the union code still generates code under pressure in gcc, */
973 /* but less than using pointers, and always seems to */
974 /* successfully return a constant. */
975 /* the reason why we have this horrible preprocessor mess */
976 /* is to avoid it in all cases, at least on common architectures */
977 /* or when using a recent enough gcc version (>= 4.6) */
978#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
979 return 0x44;
980#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
981 return 0x44;
982#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
983 return 0x11;
984#else
985 union
986 {
987 uint32_t i;
988 uint8_t c;
989 } u = { 0x11223344 };
990 return u.c;
991#endif
992}
993
994ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
995ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
996ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
997ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
998
999#if ECB_GCC_VERSION(3,0) || ECB_C99
1000 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1001#else
1002 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1003#endif
1004
1005#if __cplusplus
1006 template<typename T>
1007 static inline T ecb_div_rd (T val, T div)
1008 {
1009 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1010 }
1011 template<typename T>
1012 static inline T ecb_div_ru (T val, T div)
1013 {
1014 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1015 }
1016#else
1017 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1018 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1019#endif
1020
1021#if ecb_cplusplus_does_not_suck
1022 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1023 template<typename T, int N>
1024 static inline int ecb_array_length (const T (&arr)[N])
1025 {
1026 return N;
1027 }
1028#else
1029 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1030#endif
1031
1032/*******************************************************************************/
1033/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1034
1035/* basically, everything uses "ieee pure-endian" floating point numbers */
1036/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1037#if 0 \
1038 || __i386 || __i386__ \
1039 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1040 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1041 || defined __arm__ && defined __ARM_EABI__ \
1042 || defined __s390__ || defined __s390x__ \
1043 || defined __mips__ \
1044 || defined __alpha__ \
1045 || defined __hppa__ \
1046 || defined __ia64__ \
1047 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1048 #define ECB_STDFP 1
1049 #include <string.h> /* for memcpy */
1050#else
1051 #define ECB_STDFP 0
1052 #include <math.h> /* for frexp*, ldexp* */
1053#endif
1054
1055#ifndef ECB_NO_LIBM
1056
1057 /* convert a float to ieee single/binary32 */
1058 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1059 ecb_function_ uint32_t
1060 ecb_float_to_binary32 (float x)
1061 {
1062 uint32_t r;
1063
1064 #if ECB_STDFP
1065 memcpy (&r, &x, 4);
1066 #else
1067 /* slow emulation, works for anything but -0 */
1068 uint32_t m;
1069 int e;
1070
1071 if (x == 0e0f ) return 0x00000000U;
1072 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1073 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1074 if (x != x ) return 0x7fbfffffU;
1075
1076 m = frexpf (x, &e) * 0x1000000U;
1077
1078 r = m & 0x80000000U;
1079
1080 if (r)
1081 m = -m;
1082
1083 if (e <= -126)
1084 {
1085 m &= 0xffffffU;
1086 m >>= (-125 - e);
1087 e = -126;
1088 }
1089
1090 r |= (e + 126) << 23;
1091 r |= m & 0x7fffffU;
1092 #endif
1093
1094 return r;
1095 }
1096
1097 /* converts an ieee single/binary32 to a float */
1098 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1099 ecb_function_ float
1100 ecb_binary32_to_float (uint32_t x)
1101 {
1102 float r;
1103
1104 #if ECB_STDFP
1105 memcpy (&r, &x, 4);
1106 #else
1107 /* emulation, only works for normals and subnormals and +0 */
1108 int neg = x >> 31;
1109 int e = (x >> 23) & 0xffU;
1110
1111 x &= 0x7fffffU;
1112
1113 if (e)
1114 x |= 0x800000U;
1115 else
1116 e = 1;
1117
1118 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1119 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1120
1121 r = neg ? -r : r;
1122 #endif
1123
1124 return r;
1125 }
1126
1127 /* convert a double to ieee double/binary64 */
1128 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1129 ecb_function_ uint64_t
1130 ecb_double_to_binary64 (double x)
1131 {
1132 uint64_t r;
1133
1134 #if ECB_STDFP
1135 memcpy (&r, &x, 8);
1136 #else
1137 /* slow emulation, works for anything but -0 */
1138 uint64_t m;
1139 int e;
1140
1141 if (x == 0e0 ) return 0x0000000000000000U;
1142 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1143 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1144 if (x != x ) return 0X7ff7ffffffffffffU;
1145
1146 m = frexp (x, &e) * 0x20000000000000U;
1147
1148 r = m & 0x8000000000000000;;
1149
1150 if (r)
1151 m = -m;
1152
1153 if (e <= -1022)
1154 {
1155 m &= 0x1fffffffffffffU;
1156 m >>= (-1021 - e);
1157 e = -1022;
1158 }
1159
1160 r |= ((uint64_t)(e + 1022)) << 52;
1161 r |= m & 0xfffffffffffffU;
1162 #endif
1163
1164 return r;
1165 }
1166
1167 /* converts an ieee double/binary64 to a double */
1168 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1169 ecb_function_ double
1170 ecb_binary64_to_double (uint64_t x)
1171 {
1172 double r;
1173
1174 #if ECB_STDFP
1175 memcpy (&r, &x, 8);
1176 #else
1177 /* emulation, only works for normals and subnormals and +0 */
1178 int neg = x >> 63;
1179 int e = (x >> 52) & 0x7ffU;
1180
1181 x &= 0xfffffffffffffU;
1182
1183 if (e)
1184 x |= 0x10000000000000U;
1185 else
1186 e = 1;
1187
1188 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1189 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1190
1191 r = neg ? -r : r;
1192 #endif
1193
1194 return r;
1195 }
1196
1197#endif
1198
1199#endif
1200
1201/* ECB.H END */
1202
1203#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1204/* if your architecture doesn't need memory fences, e.g. because it is
1205 * single-cpu/core, or if you use libev in a project that doesn't use libev
1206 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1207 * libev, in which cases the memory fences become nops.
1208 * alternatively, you can remove this #error and link against libpthread,
1209 * which will then provide the memory fences.
1210 */
1211# error "memory fences not defined for your architecture, please report"
1212#endif
1213
1214#ifndef ECB_MEMORY_FENCE
1215# define ECB_MEMORY_FENCE do { } while (0)
1216# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1217# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1218#endif
1219
1220#define expect_false(cond) ecb_expect_false (cond)
1221#define expect_true(cond) ecb_expect_true (cond)
1222#define noinline ecb_noinline
1223
381#define inline_size static inline 1224#define inline_size ecb_inline
382 1225
383#if EV_MINIMAL 1226#if EV_FEATURE_CODE
1227# define inline_speed ecb_inline
1228#else
384# define inline_speed static noinline 1229# define inline_speed static noinline
1230#endif
1231
1232#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1233
1234#if EV_MINPRI == EV_MAXPRI
1235# define ABSPRI(w) (((W)w), 0)
385#else 1236#else
386# define inline_speed static inline
387#endif
388
389#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
390#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1237# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1238#endif
391 1239
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1240#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 1241#define EMPTY2(a,b) /* used to suppress some warnings */
394 1242
395typedef ev_watcher *W; 1243typedef ev_watcher *W;
… …
399#define ev_active(w) ((W)(w))->active 1247#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 1248#define ev_at(w) ((WT)(w))->at
401 1249
402#if EV_USE_REALTIME 1250#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 1251/* sig_atomic_t is used to avoid per-thread variables or locking but still */
404/* giving it a reasonably high chance of working on typical architetcures */ 1252/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 1253static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 1254#endif
407 1255
408#if EV_USE_MONOTONIC 1256#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1257static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 1258#endif
411 1259
1260#ifndef EV_FD_TO_WIN32_HANDLE
1261# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1262#endif
1263#ifndef EV_WIN32_HANDLE_TO_FD
1264# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1265#endif
1266#ifndef EV_WIN32_CLOSE_FD
1267# define EV_WIN32_CLOSE_FD(fd) close (fd)
1268#endif
1269
412#ifdef _WIN32 1270#ifdef _WIN32
413# include "ev_win32.c" 1271# include "ev_win32.c"
414#endif 1272#endif
415 1273
416/*****************************************************************************/ 1274/*****************************************************************************/
417 1275
1276/* define a suitable floor function (only used by periodics atm) */
1277
1278#if EV_USE_FLOOR
1279# include <math.h>
1280# define ev_floor(v) floor (v)
1281#else
1282
1283#include <float.h>
1284
1285/* a floor() replacement function, should be independent of ev_tstamp type */
1286static ev_tstamp noinline
1287ev_floor (ev_tstamp v)
1288{
1289 /* the choice of shift factor is not terribly important */
1290#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1291 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1292#else
1293 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1294#endif
1295
1296 /* argument too large for an unsigned long? */
1297 if (expect_false (v >= shift))
1298 {
1299 ev_tstamp f;
1300
1301 if (v == v - 1.)
1302 return v; /* very large number */
1303
1304 f = shift * ev_floor (v * (1. / shift));
1305 return f + ev_floor (v - f);
1306 }
1307
1308 /* special treatment for negative args? */
1309 if (expect_false (v < 0.))
1310 {
1311 ev_tstamp f = -ev_floor (-v);
1312
1313 return f - (f == v ? 0 : 1);
1314 }
1315
1316 /* fits into an unsigned long */
1317 return (unsigned long)v;
1318}
1319
1320#endif
1321
1322/*****************************************************************************/
1323
1324#ifdef __linux
1325# include <sys/utsname.h>
1326#endif
1327
1328static unsigned int noinline ecb_cold
1329ev_linux_version (void)
1330{
1331#ifdef __linux
1332 unsigned int v = 0;
1333 struct utsname buf;
1334 int i;
1335 char *p = buf.release;
1336
1337 if (uname (&buf))
1338 return 0;
1339
1340 for (i = 3+1; --i; )
1341 {
1342 unsigned int c = 0;
1343
1344 for (;;)
1345 {
1346 if (*p >= '0' && *p <= '9')
1347 c = c * 10 + *p++ - '0';
1348 else
1349 {
1350 p += *p == '.';
1351 break;
1352 }
1353 }
1354
1355 v = (v << 8) | c;
1356 }
1357
1358 return v;
1359#else
1360 return 0;
1361#endif
1362}
1363
1364/*****************************************************************************/
1365
1366#if EV_AVOID_STDIO
1367static void noinline ecb_cold
1368ev_printerr (const char *msg)
1369{
1370 write (STDERR_FILENO, msg, strlen (msg));
1371}
1372#endif
1373
418static void (*syserr_cb)(const char *msg); 1374static void (*syserr_cb)(const char *msg) EV_THROW;
419 1375
420void 1376void ecb_cold
421ev_set_syserr_cb (void (*cb)(const char *msg)) 1377ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
422{ 1378{
423 syserr_cb = cb; 1379 syserr_cb = cb;
424} 1380}
425 1381
426static void noinline 1382static void noinline ecb_cold
427ev_syserr (const char *msg) 1383ev_syserr (const char *msg)
428{ 1384{
429 if (!msg) 1385 if (!msg)
430 msg = "(libev) system error"; 1386 msg = "(libev) system error";
431 1387
432 if (syserr_cb) 1388 if (syserr_cb)
433 syserr_cb (msg); 1389 syserr_cb (msg);
434 else 1390 else
435 { 1391 {
1392#if EV_AVOID_STDIO
1393 ev_printerr (msg);
1394 ev_printerr (": ");
1395 ev_printerr (strerror (errno));
1396 ev_printerr ("\n");
1397#else
436 perror (msg); 1398 perror (msg);
1399#endif
437 abort (); 1400 abort ();
438 } 1401 }
439} 1402}
440 1403
441static void * 1404static void *
442ev_realloc_emul (void *ptr, long size) 1405ev_realloc_emul (void *ptr, long size) EV_THROW
443{ 1406{
444 /* some systems, notably openbsd and darwin, fail to properly 1407 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 1408 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 1409 * the single unix specification, so work around them here.
1410 * recently, also (at least) fedora and debian started breaking it,
1411 * despite documenting it otherwise.
447 */ 1412 */
448 1413
449 if (size) 1414 if (size)
450 return realloc (ptr, size); 1415 return realloc (ptr, size);
451 1416
452 free (ptr); 1417 free (ptr);
453 return 0; 1418 return 0;
454} 1419}
455 1420
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1421static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
457 1422
458void 1423void ecb_cold
459ev_set_allocator (void *(*cb)(void *ptr, long size)) 1424ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
460{ 1425{
461 alloc = cb; 1426 alloc = cb;
462} 1427}
463 1428
464inline_speed void * 1429inline_speed void *
… …
466{ 1431{
467 ptr = alloc (ptr, size); 1432 ptr = alloc (ptr, size);
468 1433
469 if (!ptr && size) 1434 if (!ptr && size)
470 { 1435 {
1436#if EV_AVOID_STDIO
1437 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1438#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1439 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1440#endif
472 abort (); 1441 abort ();
473 } 1442 }
474 1443
475 return ptr; 1444 return ptr;
476} 1445}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 1447#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 1448#define ev_free(ptr) ev_realloc ((ptr), 0)
480 1449
481/*****************************************************************************/ 1450/*****************************************************************************/
482 1451
1452/* set in reify when reification needed */
1453#define EV_ANFD_REIFY 1
1454
483/* file descriptor info structure */ 1455/* file descriptor info structure */
484typedef struct 1456typedef struct
485{ 1457{
486 WL head; 1458 WL head;
487 unsigned char events; /* the events watched for */ 1459 unsigned char events; /* the events watched for */
488 unsigned char reify; /* flag set when this ANFD needs reification */ 1460 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
489 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1461 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
490 unsigned char unused; 1462 unsigned char unused;
491#if EV_USE_EPOLL 1463#if EV_USE_EPOLL
492 unsigned int egen; /* generation counter to counter epoll bugs */ 1464 unsigned int egen; /* generation counter to counter epoll bugs */
493#endif 1465#endif
494#if EV_SELECT_IS_WINSOCKET 1466#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
495 SOCKET handle; 1467 SOCKET handle;
1468#endif
1469#if EV_USE_IOCP
1470 OVERLAPPED or, ow;
496#endif 1471#endif
497} ANFD; 1472} ANFD;
498 1473
499/* stores the pending event set for a given watcher */ 1474/* stores the pending event set for a given watcher */
500typedef struct 1475typedef struct
… …
542 #undef VAR 1517 #undef VAR
543 }; 1518 };
544 #include "ev_wrap.h" 1519 #include "ev_wrap.h"
545 1520
546 static struct ev_loop default_loop_struct; 1521 static struct ev_loop default_loop_struct;
547 struct ev_loop *ev_default_loop_ptr; 1522 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
548 1523
549#else 1524#else
550 1525
551 ev_tstamp ev_rt_now; 1526 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
552 #define VAR(name,decl) static decl; 1527 #define VAR(name,decl) static decl;
553 #include "ev_vars.h" 1528 #include "ev_vars.h"
554 #undef VAR 1529 #undef VAR
555 1530
556 static int ev_default_loop_ptr; 1531 static int ev_default_loop_ptr;
557 1532
558#endif 1533#endif
559 1534
1535#if EV_FEATURE_API
1536# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1537# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1538# define EV_INVOKE_PENDING invoke_cb (EV_A)
1539#else
1540# define EV_RELEASE_CB (void)0
1541# define EV_ACQUIRE_CB (void)0
1542# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1543#endif
1544
1545#define EVBREAK_RECURSE 0x80
1546
560/*****************************************************************************/ 1547/*****************************************************************************/
561 1548
1549#ifndef EV_HAVE_EV_TIME
562ev_tstamp 1550ev_tstamp
563ev_time (void) 1551ev_time (void) EV_THROW
564{ 1552{
565#if EV_USE_REALTIME 1553#if EV_USE_REALTIME
566 if (expect_true (have_realtime)) 1554 if (expect_true (have_realtime))
567 { 1555 {
568 struct timespec ts; 1556 struct timespec ts;
… …
573 1561
574 struct timeval tv; 1562 struct timeval tv;
575 gettimeofday (&tv, 0); 1563 gettimeofday (&tv, 0);
576 return tv.tv_sec + tv.tv_usec * 1e-6; 1564 return tv.tv_sec + tv.tv_usec * 1e-6;
577} 1565}
1566#endif
578 1567
579inline_size ev_tstamp 1568inline_size ev_tstamp
580get_clock (void) 1569get_clock (void)
581{ 1570{
582#if EV_USE_MONOTONIC 1571#if EV_USE_MONOTONIC
… …
591 return ev_time (); 1580 return ev_time ();
592} 1581}
593 1582
594#if EV_MULTIPLICITY 1583#if EV_MULTIPLICITY
595ev_tstamp 1584ev_tstamp
596ev_now (EV_P) 1585ev_now (EV_P) EV_THROW
597{ 1586{
598 return ev_rt_now; 1587 return ev_rt_now;
599} 1588}
600#endif 1589#endif
601 1590
602void 1591void
603ev_sleep (ev_tstamp delay) 1592ev_sleep (ev_tstamp delay) EV_THROW
604{ 1593{
605 if (delay > 0.) 1594 if (delay > 0.)
606 { 1595 {
607#if EV_USE_NANOSLEEP 1596#if EV_USE_NANOSLEEP
608 struct timespec ts; 1597 struct timespec ts;
609 1598
610 ts.tv_sec = (time_t)delay; 1599 EV_TS_SET (ts, delay);
611 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
612
613 nanosleep (&ts, 0); 1600 nanosleep (&ts, 0);
614#elif defined(_WIN32) 1601#elif defined _WIN32
615 Sleep ((unsigned long)(delay * 1e3)); 1602 Sleep ((unsigned long)(delay * 1e3));
616#else 1603#else
617 struct timeval tv; 1604 struct timeval tv;
618 1605
619 tv.tv_sec = (time_t)delay;
620 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
621
622 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1606 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
623 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1607 /* something not guaranteed by newer posix versions, but guaranteed */
624 /* by older ones */ 1608 /* by older ones */
1609 EV_TV_SET (tv, delay);
625 select (0, 0, 0, 0, &tv); 1610 select (0, 0, 0, 0, &tv);
626#endif 1611#endif
627 } 1612 }
628} 1613}
629 1614
630/*****************************************************************************/ 1615/*****************************************************************************/
631 1616
632#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1617#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
633 1618
634/* find a suitable new size for the given array, */ 1619/* find a suitable new size for the given array, */
635/* hopefully by rounding to a ncie-to-malloc size */ 1620/* hopefully by rounding to a nice-to-malloc size */
636inline_size int 1621inline_size int
637array_nextsize (int elem, int cur, int cnt) 1622array_nextsize (int elem, int cur, int cnt)
638{ 1623{
639 int ncur = cur + 1; 1624 int ncur = cur + 1;
640 1625
641 do 1626 do
642 ncur <<= 1; 1627 ncur <<= 1;
643 while (cnt > ncur); 1628 while (cnt > ncur);
644 1629
645 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1630 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
646 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1631 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
647 { 1632 {
648 ncur *= elem; 1633 ncur *= elem;
649 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1634 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
650 ncur = ncur - sizeof (void *) * 4; 1635 ncur = ncur - sizeof (void *) * 4;
… …
652 } 1637 }
653 1638
654 return ncur; 1639 return ncur;
655} 1640}
656 1641
657static noinline void * 1642static void * noinline ecb_cold
658array_realloc (int elem, void *base, int *cur, int cnt) 1643array_realloc (int elem, void *base, int *cur, int cnt)
659{ 1644{
660 *cur = array_nextsize (elem, *cur, cnt); 1645 *cur = array_nextsize (elem, *cur, cnt);
661 return ev_realloc (base, elem * *cur); 1646 return ev_realloc (base, elem * *cur);
662} 1647}
… …
665 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1650 memset ((void *)(base), 0, sizeof (*(base)) * (count))
666 1651
667#define array_needsize(type,base,cur,cnt,init) \ 1652#define array_needsize(type,base,cur,cnt,init) \
668 if (expect_false ((cnt) > (cur))) \ 1653 if (expect_false ((cnt) > (cur))) \
669 { \ 1654 { \
670 int ocur_ = (cur); \ 1655 int ecb_unused ocur_ = (cur); \
671 (base) = (type *)array_realloc \ 1656 (base) = (type *)array_realloc \
672 (sizeof (type), (base), &(cur), (cnt)); \ 1657 (sizeof (type), (base), &(cur), (cnt)); \
673 init ((base) + (ocur_), (cur) - ocur_); \ 1658 init ((base) + (ocur_), (cur) - ocur_); \
674 } 1659 }
675 1660
… …
693pendingcb (EV_P_ ev_prepare *w, int revents) 1678pendingcb (EV_P_ ev_prepare *w, int revents)
694{ 1679{
695} 1680}
696 1681
697void noinline 1682void noinline
698ev_feed_event (EV_P_ void *w, int revents) 1683ev_feed_event (EV_P_ void *w, int revents) EV_THROW
699{ 1684{
700 W w_ = (W)w; 1685 W w_ = (W)w;
701 int pri = ABSPRI (w_); 1686 int pri = ABSPRI (w_);
702 1687
703 if (expect_false (w_->pending)) 1688 if (expect_false (w_->pending))
… …
707 w_->pending = ++pendingcnt [pri]; 1692 w_->pending = ++pendingcnt [pri];
708 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1693 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
709 pendings [pri][w_->pending - 1].w = w_; 1694 pendings [pri][w_->pending - 1].w = w_;
710 pendings [pri][w_->pending - 1].events = revents; 1695 pendings [pri][w_->pending - 1].events = revents;
711 } 1696 }
1697
1698 pendingpri = NUMPRI - 1;
712} 1699}
713 1700
714inline_speed void 1701inline_speed void
715feed_reverse (EV_P_ W w) 1702feed_reverse (EV_P_ W w)
716{ 1703{
… …
736} 1723}
737 1724
738/*****************************************************************************/ 1725/*****************************************************************************/
739 1726
740inline_speed void 1727inline_speed void
741fd_event (EV_P_ int fd, int revents) 1728fd_event_nocheck (EV_P_ int fd, int revents)
742{ 1729{
743 ANFD *anfd = anfds + fd; 1730 ANFD *anfd = anfds + fd;
744 ev_io *w; 1731 ev_io *w;
745 1732
746 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1733 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
750 if (ev) 1737 if (ev)
751 ev_feed_event (EV_A_ (W)w, ev); 1738 ev_feed_event (EV_A_ (W)w, ev);
752 } 1739 }
753} 1740}
754 1741
1742/* do not submit kernel events for fds that have reify set */
1743/* because that means they changed while we were polling for new events */
1744inline_speed void
1745fd_event (EV_P_ int fd, int revents)
1746{
1747 ANFD *anfd = anfds + fd;
1748
1749 if (expect_true (!anfd->reify))
1750 fd_event_nocheck (EV_A_ fd, revents);
1751}
1752
755void 1753void
756ev_feed_fd_event (EV_P_ int fd, int revents) 1754ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
757{ 1755{
758 if (fd >= 0 && fd < anfdmax) 1756 if (fd >= 0 && fd < anfdmax)
759 fd_event (EV_A_ fd, revents); 1757 fd_event_nocheck (EV_A_ fd, revents);
760} 1758}
761 1759
762/* make sure the external fd watch events are in-sync */ 1760/* make sure the external fd watch events are in-sync */
763/* with the kernel/libev internal state */ 1761/* with the kernel/libev internal state */
764inline_size void 1762inline_size void
765fd_reify (EV_P) 1763fd_reify (EV_P)
766{ 1764{
767 int i; 1765 int i;
768 1766
1767#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1768 for (i = 0; i < fdchangecnt; ++i)
1769 {
1770 int fd = fdchanges [i];
1771 ANFD *anfd = anfds + fd;
1772
1773 if (anfd->reify & EV__IOFDSET && anfd->head)
1774 {
1775 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1776
1777 if (handle != anfd->handle)
1778 {
1779 unsigned long arg;
1780
1781 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1782
1783 /* handle changed, but fd didn't - we need to do it in two steps */
1784 backend_modify (EV_A_ fd, anfd->events, 0);
1785 anfd->events = 0;
1786 anfd->handle = handle;
1787 }
1788 }
1789 }
1790#endif
1791
769 for (i = 0; i < fdchangecnt; ++i) 1792 for (i = 0; i < fdchangecnt; ++i)
770 { 1793 {
771 int fd = fdchanges [i]; 1794 int fd = fdchanges [i];
772 ANFD *anfd = anfds + fd; 1795 ANFD *anfd = anfds + fd;
773 ev_io *w; 1796 ev_io *w;
774 1797
775 unsigned char events = 0; 1798 unsigned char o_events = anfd->events;
1799 unsigned char o_reify = anfd->reify;
776 1800
777 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1801 anfd->reify = 0;
778 events |= (unsigned char)w->events;
779 1802
780#if EV_SELECT_IS_WINSOCKET 1803 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
781 if (events)
782 { 1804 {
783 unsigned long arg; 1805 anfd->events = 0;
784 #ifdef EV_FD_TO_WIN32_HANDLE 1806
785 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1807 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
786 #else 1808 anfd->events |= (unsigned char)w->events;
787 anfd->handle = _get_osfhandle (fd); 1809
788 #endif 1810 if (o_events != anfd->events)
789 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1811 o_reify = EV__IOFDSET; /* actually |= */
790 } 1812 }
791#endif
792 1813
793 { 1814 if (o_reify & EV__IOFDSET)
794 unsigned char o_events = anfd->events;
795 unsigned char o_reify = anfd->reify;
796
797 anfd->reify = 0;
798 anfd->events = events;
799
800 if (o_events != events || o_reify & EV__IOFDSET)
801 backend_modify (EV_A_ fd, o_events, events); 1815 backend_modify (EV_A_ fd, o_events, anfd->events);
802 }
803 } 1816 }
804 1817
805 fdchangecnt = 0; 1818 fdchangecnt = 0;
806} 1819}
807 1820
… …
819 fdchanges [fdchangecnt - 1] = fd; 1832 fdchanges [fdchangecnt - 1] = fd;
820 } 1833 }
821} 1834}
822 1835
823/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1836/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
824inline_speed void 1837inline_speed void ecb_cold
825fd_kill (EV_P_ int fd) 1838fd_kill (EV_P_ int fd)
826{ 1839{
827 ev_io *w; 1840 ev_io *w;
828 1841
829 while ((w = (ev_io *)anfds [fd].head)) 1842 while ((w = (ev_io *)anfds [fd].head))
… …
831 ev_io_stop (EV_A_ w); 1844 ev_io_stop (EV_A_ w);
832 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1845 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
833 } 1846 }
834} 1847}
835 1848
836/* check whether the given fd is atcually valid, for error recovery */ 1849/* check whether the given fd is actually valid, for error recovery */
837inline_size int 1850inline_size int ecb_cold
838fd_valid (int fd) 1851fd_valid (int fd)
839{ 1852{
840#ifdef _WIN32 1853#ifdef _WIN32
841 return _get_osfhandle (fd) != -1; 1854 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
842#else 1855#else
843 return fcntl (fd, F_GETFD) != -1; 1856 return fcntl (fd, F_GETFD) != -1;
844#endif 1857#endif
845} 1858}
846 1859
847/* called on EBADF to verify fds */ 1860/* called on EBADF to verify fds */
848static void noinline 1861static void noinline ecb_cold
849fd_ebadf (EV_P) 1862fd_ebadf (EV_P)
850{ 1863{
851 int fd; 1864 int fd;
852 1865
853 for (fd = 0; fd < anfdmax; ++fd) 1866 for (fd = 0; fd < anfdmax; ++fd)
… …
855 if (!fd_valid (fd) && errno == EBADF) 1868 if (!fd_valid (fd) && errno == EBADF)
856 fd_kill (EV_A_ fd); 1869 fd_kill (EV_A_ fd);
857} 1870}
858 1871
859/* called on ENOMEM in select/poll to kill some fds and retry */ 1872/* called on ENOMEM in select/poll to kill some fds and retry */
860static void noinline 1873static void noinline ecb_cold
861fd_enomem (EV_P) 1874fd_enomem (EV_P)
862{ 1875{
863 int fd; 1876 int fd;
864 1877
865 for (fd = anfdmax; fd--; ) 1878 for (fd = anfdmax; fd--; )
866 if (anfds [fd].events) 1879 if (anfds [fd].events)
867 { 1880 {
868 fd_kill (EV_A_ fd); 1881 fd_kill (EV_A_ fd);
869 return; 1882 break;
870 } 1883 }
871} 1884}
872 1885
873/* usually called after fork if backend needs to re-arm all fds from scratch */ 1886/* usually called after fork if backend needs to re-arm all fds from scratch */
874static void noinline 1887static void noinline
… …
879 for (fd = 0; fd < anfdmax; ++fd) 1892 for (fd = 0; fd < anfdmax; ++fd)
880 if (anfds [fd].events) 1893 if (anfds [fd].events)
881 { 1894 {
882 anfds [fd].events = 0; 1895 anfds [fd].events = 0;
883 anfds [fd].emask = 0; 1896 anfds [fd].emask = 0;
884 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1897 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
885 } 1898 }
886} 1899}
887 1900
1901/* used to prepare libev internal fd's */
1902/* this is not fork-safe */
1903inline_speed void
1904fd_intern (int fd)
1905{
1906#ifdef _WIN32
1907 unsigned long arg = 1;
1908 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1909#else
1910 fcntl (fd, F_SETFD, FD_CLOEXEC);
1911 fcntl (fd, F_SETFL, O_NONBLOCK);
1912#endif
1913}
1914
888/*****************************************************************************/ 1915/*****************************************************************************/
889 1916
890/* 1917/*
891 * the heap functions want a real array index. array index 0 uis guaranteed to not 1918 * the heap functions want a real array index. array index 0 is guaranteed to not
892 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1919 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
893 * the branching factor of the d-tree. 1920 * the branching factor of the d-tree.
894 */ 1921 */
895 1922
896/* 1923/*
… …
964 1991
965 for (;;) 1992 for (;;)
966 { 1993 {
967 int c = k << 1; 1994 int c = k << 1;
968 1995
969 if (c > N + HEAP0 - 1) 1996 if (c >= N + HEAP0)
970 break; 1997 break;
971 1998
972 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1999 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
973 ? 1 : 0; 2000 ? 1 : 0;
974 2001
… …
1010 2037
1011/* move an element suitably so it is in a correct place */ 2038/* move an element suitably so it is in a correct place */
1012inline_size void 2039inline_size void
1013adjustheap (ANHE *heap, int N, int k) 2040adjustheap (ANHE *heap, int N, int k)
1014{ 2041{
1015 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 2042 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1016 upheap (heap, k); 2043 upheap (heap, k);
1017 else 2044 else
1018 downheap (heap, N, k); 2045 downheap (heap, N, k);
1019} 2046}
1020 2047
… …
1033/*****************************************************************************/ 2060/*****************************************************************************/
1034 2061
1035/* associate signal watchers to a signal signal */ 2062/* associate signal watchers to a signal signal */
1036typedef struct 2063typedef struct
1037{ 2064{
2065 EV_ATOMIC_T pending;
2066#if EV_MULTIPLICITY
2067 EV_P;
2068#endif
1038 WL head; 2069 WL head;
1039 EV_ATOMIC_T gotsig;
1040} ANSIG; 2070} ANSIG;
1041 2071
1042static ANSIG *signals; 2072static ANSIG signals [EV_NSIG - 1];
1043static int signalmax;
1044
1045static EV_ATOMIC_T gotsig;
1046 2073
1047/*****************************************************************************/ 2074/*****************************************************************************/
1048 2075
1049/* used to prepare libev internal fd's */ 2076#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1050/* this is not fork-safe */ 2077
2078static void noinline ecb_cold
2079evpipe_init (EV_P)
2080{
2081 if (!ev_is_active (&pipe_w))
2082 {
2083 int fds [2];
2084
2085# if EV_USE_EVENTFD
2086 fds [0] = -1;
2087 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
2088 if (fds [1] < 0 && errno == EINVAL)
2089 fds [1] = eventfd (0, 0);
2090
2091 if (fds [1] < 0)
2092# endif
2093 {
2094 while (pipe (fds))
2095 ev_syserr ("(libev) error creating signal/async pipe");
2096
2097 fd_intern (fds [0]);
2098 }
2099
2100 fd_intern (fds [1]);
2101
2102 evpipe [0] = fds [0];
2103
2104 if (evpipe [1] < 0)
2105 evpipe [1] = fds [1]; /* first call, set write fd */
2106 else
2107 {
2108 /* on subsequent calls, do not change evpipe [1] */
2109 /* so that evpipe_write can always rely on its value. */
2110 /* this branch does not do anything sensible on windows, */
2111 /* so must not be executed on windows */
2112
2113 dup2 (fds [1], evpipe [1]);
2114 close (fds [1]);
2115 }
2116
2117 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2118 ev_io_start (EV_A_ &pipe_w);
2119 ev_unref (EV_A); /* watcher should not keep loop alive */
2120 }
2121}
2122
1051inline_speed void 2123inline_speed void
1052fd_intern (int fd) 2124evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1053{ 2125{
1054#ifdef _WIN32 2126 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1055 unsigned long arg = 1;
1056 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1057#else
1058 fcntl (fd, F_SETFD, FD_CLOEXEC);
1059 fcntl (fd, F_SETFL, O_NONBLOCK);
1060#endif
1061}
1062 2127
1063static void noinline 2128 if (expect_true (*flag))
1064evpipe_init (EV_P) 2129 return;
1065{ 2130
1066 if (!ev_is_active (&pipe_w)) 2131 *flag = 1;
2132 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2133
2134 pipe_write_skipped = 1;
2135
2136 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2137
2138 if (pipe_write_wanted)
1067 { 2139 {
2140 int old_errno;
2141
2142 pipe_write_skipped = 0;
2143 ECB_MEMORY_FENCE_RELEASE;
2144
2145 old_errno = errno; /* save errno because write will clobber it */
2146
1068#if EV_USE_EVENTFD 2147#if EV_USE_EVENTFD
1069 if ((evfd = eventfd (0, 0)) >= 0) 2148 if (evpipe [0] < 0)
1070 { 2149 {
1071 evpipe [0] = -1; 2150 uint64_t counter = 1;
1072 fd_intern (evfd); 2151 write (evpipe [1], &counter, sizeof (uint64_t));
1073 ev_io_set (&pipe_w, evfd, EV_READ);
1074 } 2152 }
1075 else 2153 else
1076#endif 2154#endif
1077 { 2155 {
1078 while (pipe (evpipe)) 2156#ifdef _WIN32
1079 ev_syserr ("(libev) error creating signal/async pipe"); 2157 WSABUF buf;
1080 2158 DWORD sent;
1081 fd_intern (evpipe [0]); 2159 buf.buf = &buf;
1082 fd_intern (evpipe [1]); 2160 buf.len = 1;
1083 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2161 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2162#else
2163 write (evpipe [1], &(evpipe [1]), 1);
2164#endif
1084 } 2165 }
1085
1086 ev_io_start (EV_A_ &pipe_w);
1087 ev_unref (EV_A); /* watcher should not keep loop alive */
1088 }
1089}
1090
1091inline_size void
1092evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1093{
1094 if (!*flag)
1095 {
1096 int old_errno = errno; /* save errno because write might clobber it */
1097
1098 *flag = 1;
1099
1100#if EV_USE_EVENTFD
1101 if (evfd >= 0)
1102 {
1103 uint64_t counter = 1;
1104 write (evfd, &counter, sizeof (uint64_t));
1105 }
1106 else
1107#endif
1108 write (evpipe [1], &old_errno, 1);
1109 2166
1110 errno = old_errno; 2167 errno = old_errno;
1111 } 2168 }
1112} 2169}
1113 2170
1114/* called whenever the libev signal pipe */ 2171/* called whenever the libev signal pipe */
1115/* got some events (signal, async) */ 2172/* got some events (signal, async) */
1116static void 2173static void
1117pipecb (EV_P_ ev_io *iow, int revents) 2174pipecb (EV_P_ ev_io *iow, int revents)
1118{ 2175{
2176 int i;
2177
2178 if (revents & EV_READ)
2179 {
1119#if EV_USE_EVENTFD 2180#if EV_USE_EVENTFD
1120 if (evfd >= 0) 2181 if (evpipe [0] < 0)
1121 { 2182 {
1122 uint64_t counter; 2183 uint64_t counter;
1123 read (evfd, &counter, sizeof (uint64_t)); 2184 read (evpipe [1], &counter, sizeof (uint64_t));
1124 } 2185 }
1125 else 2186 else
1126#endif 2187#endif
1127 { 2188 {
1128 char dummy; 2189 char dummy[4];
2190#ifdef _WIN32
2191 WSABUF buf;
2192 DWORD recvd;
2193 DWORD flags = 0;
2194 buf.buf = dummy;
2195 buf.len = sizeof (dummy);
2196 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2197#else
1129 read (evpipe [0], &dummy, 1); 2198 read (evpipe [0], &dummy, sizeof (dummy));
2199#endif
2200 }
2201 }
2202
2203 pipe_write_skipped = 0;
2204
2205 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
2206
2207#if EV_SIGNAL_ENABLE
2208 if (sig_pending)
1130 } 2209 {
2210 sig_pending = 0;
1131 2211
1132 if (gotsig && ev_is_default_loop (EV_A)) 2212 ECB_MEMORY_FENCE;
1133 {
1134 int signum;
1135 gotsig = 0;
1136 2213
1137 for (signum = signalmax; signum--; ) 2214 for (i = EV_NSIG - 1; i--; )
1138 if (signals [signum].gotsig) 2215 if (expect_false (signals [i].pending))
1139 ev_feed_signal_event (EV_A_ signum + 1); 2216 ev_feed_signal_event (EV_A_ i + 1);
1140 } 2217 }
2218#endif
1141 2219
1142#if EV_ASYNC_ENABLE 2220#if EV_ASYNC_ENABLE
1143 if (gotasync) 2221 if (async_pending)
1144 { 2222 {
1145 int i; 2223 async_pending = 0;
1146 gotasync = 0; 2224
2225 ECB_MEMORY_FENCE;
1147 2226
1148 for (i = asynccnt; i--; ) 2227 for (i = asynccnt; i--; )
1149 if (asyncs [i]->sent) 2228 if (asyncs [i]->sent)
1150 { 2229 {
1151 asyncs [i]->sent = 0; 2230 asyncs [i]->sent = 0;
2231 ECB_MEMORY_FENCE_RELEASE;
1152 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2232 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1153 } 2233 }
1154 } 2234 }
1155#endif 2235#endif
1156} 2236}
1157 2237
1158/*****************************************************************************/ 2238/*****************************************************************************/
1159 2239
2240void
2241ev_feed_signal (int signum) EV_THROW
2242{
2243#if EV_MULTIPLICITY
2244 EV_P;
2245 ECB_MEMORY_FENCE_ACQUIRE;
2246 EV_A = signals [signum - 1].loop;
2247
2248 if (!EV_A)
2249 return;
2250#endif
2251
2252 signals [signum - 1].pending = 1;
2253 evpipe_write (EV_A_ &sig_pending);
2254}
2255
1160static void 2256static void
1161ev_sighandler (int signum) 2257ev_sighandler (int signum)
1162{ 2258{
2259#ifdef _WIN32
2260 signal (signum, ev_sighandler);
2261#endif
2262
2263 ev_feed_signal (signum);
2264}
2265
2266void noinline
2267ev_feed_signal_event (EV_P_ int signum) EV_THROW
2268{
2269 WL w;
2270
2271 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2272 return;
2273
2274 --signum;
2275
1163#if EV_MULTIPLICITY 2276#if EV_MULTIPLICITY
1164 struct ev_loop *loop = &default_loop_struct; 2277 /* it is permissible to try to feed a signal to the wrong loop */
1165#endif 2278 /* or, likely more useful, feeding a signal nobody is waiting for */
1166 2279
1167#if _WIN32 2280 if (expect_false (signals [signum].loop != EV_A))
1168 signal (signum, ev_sighandler);
1169#endif
1170
1171 signals [signum - 1].gotsig = 1;
1172 evpipe_write (EV_A_ &gotsig);
1173}
1174
1175void noinline
1176ev_feed_signal_event (EV_P_ int signum)
1177{
1178 WL w;
1179
1180#if EV_MULTIPLICITY
1181 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1182#endif
1183
1184 --signum;
1185
1186 if (signum < 0 || signum >= signalmax)
1187 return; 2281 return;
2282#endif
1188 2283
1189 signals [signum].gotsig = 0; 2284 signals [signum].pending = 0;
2285 ECB_MEMORY_FENCE_RELEASE;
1190 2286
1191 for (w = signals [signum].head; w; w = w->next) 2287 for (w = signals [signum].head; w; w = w->next)
1192 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2288 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1193} 2289}
1194 2290
2291#if EV_USE_SIGNALFD
2292static void
2293sigfdcb (EV_P_ ev_io *iow, int revents)
2294{
2295 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2296
2297 for (;;)
2298 {
2299 ssize_t res = read (sigfd, si, sizeof (si));
2300
2301 /* not ISO-C, as res might be -1, but works with SuS */
2302 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2303 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2304
2305 if (res < (ssize_t)sizeof (si))
2306 break;
2307 }
2308}
2309#endif
2310
2311#endif
2312
1195/*****************************************************************************/ 2313/*****************************************************************************/
1196 2314
2315#if EV_CHILD_ENABLE
1197static WL childs [EV_PID_HASHSIZE]; 2316static WL childs [EV_PID_HASHSIZE];
1198
1199#ifndef _WIN32
1200 2317
1201static ev_signal childev; 2318static ev_signal childev;
1202 2319
1203#ifndef WIFCONTINUED 2320#ifndef WIFCONTINUED
1204# define WIFCONTINUED(status) 0 2321# define WIFCONTINUED(status) 0
… …
1209child_reap (EV_P_ int chain, int pid, int status) 2326child_reap (EV_P_ int chain, int pid, int status)
1210{ 2327{
1211 ev_child *w; 2328 ev_child *w;
1212 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2329 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1213 2330
1214 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2331 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1215 { 2332 {
1216 if ((w->pid == pid || !w->pid) 2333 if ((w->pid == pid || !w->pid)
1217 && (!traced || (w->flags & 1))) 2334 && (!traced || (w->flags & 1)))
1218 { 2335 {
1219 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2336 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1244 /* make sure we are called again until all children have been reaped */ 2361 /* make sure we are called again until all children have been reaped */
1245 /* we need to do it this way so that the callback gets called before we continue */ 2362 /* we need to do it this way so that the callback gets called before we continue */
1246 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2363 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1247 2364
1248 child_reap (EV_A_ pid, pid, status); 2365 child_reap (EV_A_ pid, pid, status);
1249 if (EV_PID_HASHSIZE > 1) 2366 if ((EV_PID_HASHSIZE) > 1)
1250 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2367 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1251} 2368}
1252 2369
1253#endif 2370#endif
1254 2371
1255/*****************************************************************************/ 2372/*****************************************************************************/
1256 2373
2374#if EV_USE_IOCP
2375# include "ev_iocp.c"
2376#endif
1257#if EV_USE_PORT 2377#if EV_USE_PORT
1258# include "ev_port.c" 2378# include "ev_port.c"
1259#endif 2379#endif
1260#if EV_USE_KQUEUE 2380#if EV_USE_KQUEUE
1261# include "ev_kqueue.c" 2381# include "ev_kqueue.c"
… …
1268#endif 2388#endif
1269#if EV_USE_SELECT 2389#if EV_USE_SELECT
1270# include "ev_select.c" 2390# include "ev_select.c"
1271#endif 2391#endif
1272 2392
1273int 2393int ecb_cold
1274ev_version_major (void) 2394ev_version_major (void) EV_THROW
1275{ 2395{
1276 return EV_VERSION_MAJOR; 2396 return EV_VERSION_MAJOR;
1277} 2397}
1278 2398
1279int 2399int ecb_cold
1280ev_version_minor (void) 2400ev_version_minor (void) EV_THROW
1281{ 2401{
1282 return EV_VERSION_MINOR; 2402 return EV_VERSION_MINOR;
1283} 2403}
1284 2404
1285/* return true if we are running with elevated privileges and should ignore env variables */ 2405/* return true if we are running with elevated privileges and should ignore env variables */
1286int inline_size 2406int inline_size ecb_cold
1287enable_secure (void) 2407enable_secure (void)
1288{ 2408{
1289#ifdef _WIN32 2409#ifdef _WIN32
1290 return 0; 2410 return 0;
1291#else 2411#else
1292 return getuid () != geteuid () 2412 return getuid () != geteuid ()
1293 || getgid () != getegid (); 2413 || getgid () != getegid ();
1294#endif 2414#endif
1295} 2415}
1296 2416
1297unsigned int 2417unsigned int ecb_cold
1298ev_supported_backends (void) 2418ev_supported_backends (void) EV_THROW
1299{ 2419{
1300 unsigned int flags = 0; 2420 unsigned int flags = 0;
1301 2421
1302 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2422 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1303 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2423 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1306 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2426 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1307 2427
1308 return flags; 2428 return flags;
1309} 2429}
1310 2430
1311unsigned int 2431unsigned int ecb_cold
1312ev_recommended_backends (void) 2432ev_recommended_backends (void) EV_THROW
1313{ 2433{
1314 unsigned int flags = ev_supported_backends (); 2434 unsigned int flags = ev_supported_backends ();
1315 2435
1316#ifndef __NetBSD__ 2436#ifndef __NetBSD__
1317 /* kqueue is borked on everything but netbsd apparently */ 2437 /* kqueue is borked on everything but netbsd apparently */
… …
1321#ifdef __APPLE__ 2441#ifdef __APPLE__
1322 /* only select works correctly on that "unix-certified" platform */ 2442 /* only select works correctly on that "unix-certified" platform */
1323 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2443 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1324 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2444 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1325#endif 2445#endif
2446#ifdef __FreeBSD__
2447 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2448#endif
1326 2449
1327 return flags; 2450 return flags;
1328} 2451}
1329 2452
2453unsigned int ecb_cold
2454ev_embeddable_backends (void) EV_THROW
2455{
2456 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2457
2458 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2459 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2460 flags &= ~EVBACKEND_EPOLL;
2461
2462 return flags;
2463}
2464
1330unsigned int 2465unsigned int
1331ev_embeddable_backends (void) 2466ev_backend (EV_P) EV_THROW
1332{ 2467{
1333 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2468 return backend;
1334
1335 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1336 /* please fix it and tell me how to detect the fix */
1337 flags &= ~EVBACKEND_EPOLL;
1338
1339 return flags;
1340} 2469}
1341 2470
2471#if EV_FEATURE_API
1342unsigned int 2472unsigned int
1343ev_backend (EV_P) 2473ev_iteration (EV_P) EV_THROW
1344{ 2474{
1345 return backend; 2475 return loop_count;
1346} 2476}
1347 2477
1348unsigned int 2478unsigned int
1349ev_loop_count (EV_P) 2479ev_depth (EV_P) EV_THROW
1350{ 2480{
1351 return loop_count; 2481 return loop_depth;
1352} 2482}
1353 2483
1354void 2484void
1355ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2485ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1356{ 2486{
1357 io_blocktime = interval; 2487 io_blocktime = interval;
1358} 2488}
1359 2489
1360void 2490void
1361ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2491ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1362{ 2492{
1363 timeout_blocktime = interval; 2493 timeout_blocktime = interval;
1364} 2494}
1365 2495
2496void
2497ev_set_userdata (EV_P_ void *data) EV_THROW
2498{
2499 userdata = data;
2500}
2501
2502void *
2503ev_userdata (EV_P) EV_THROW
2504{
2505 return userdata;
2506}
2507
2508void
2509ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2510{
2511 invoke_cb = invoke_pending_cb;
2512}
2513
2514void
2515ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2516{
2517 release_cb = release;
2518 acquire_cb = acquire;
2519}
2520#endif
2521
1366/* initialise a loop structure, must be zero-initialised */ 2522/* initialise a loop structure, must be zero-initialised */
1367static void noinline 2523static void noinline ecb_cold
1368loop_init (EV_P_ unsigned int flags) 2524loop_init (EV_P_ unsigned int flags) EV_THROW
1369{ 2525{
1370 if (!backend) 2526 if (!backend)
1371 { 2527 {
2528 origflags = flags;
2529
1372#if EV_USE_REALTIME 2530#if EV_USE_REALTIME
1373 if (!have_realtime) 2531 if (!have_realtime)
1374 { 2532 {
1375 struct timespec ts; 2533 struct timespec ts;
1376 2534
… …
1387 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2545 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1388 have_monotonic = 1; 2546 have_monotonic = 1;
1389 } 2547 }
1390#endif 2548#endif
1391 2549
1392 ev_rt_now = ev_time ();
1393 mn_now = get_clock ();
1394 now_floor = mn_now;
1395 rtmn_diff = ev_rt_now - mn_now;
1396
1397 io_blocktime = 0.;
1398 timeout_blocktime = 0.;
1399 backend = 0;
1400 backend_fd = -1;
1401 gotasync = 0;
1402#if EV_USE_INOTIFY
1403 fs_fd = -2;
1404#endif
1405
1406 /* pid check not overridable via env */ 2550 /* pid check not overridable via env */
1407#ifndef _WIN32 2551#ifndef _WIN32
1408 if (flags & EVFLAG_FORKCHECK) 2552 if (flags & EVFLAG_FORKCHECK)
1409 curpid = getpid (); 2553 curpid = getpid ();
1410#endif 2554#endif
… …
1412 if (!(flags & EVFLAG_NOENV) 2556 if (!(flags & EVFLAG_NOENV)
1413 && !enable_secure () 2557 && !enable_secure ()
1414 && getenv ("LIBEV_FLAGS")) 2558 && getenv ("LIBEV_FLAGS"))
1415 flags = atoi (getenv ("LIBEV_FLAGS")); 2559 flags = atoi (getenv ("LIBEV_FLAGS"));
1416 2560
1417 if (!(flags & 0x0000ffffU)) 2561 ev_rt_now = ev_time ();
2562 mn_now = get_clock ();
2563 now_floor = mn_now;
2564 rtmn_diff = ev_rt_now - mn_now;
2565#if EV_FEATURE_API
2566 invoke_cb = ev_invoke_pending;
2567#endif
2568
2569 io_blocktime = 0.;
2570 timeout_blocktime = 0.;
2571 backend = 0;
2572 backend_fd = -1;
2573 sig_pending = 0;
2574#if EV_ASYNC_ENABLE
2575 async_pending = 0;
2576#endif
2577 pipe_write_skipped = 0;
2578 pipe_write_wanted = 0;
2579 evpipe [0] = -1;
2580 evpipe [1] = -1;
2581#if EV_USE_INOTIFY
2582 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2583#endif
2584#if EV_USE_SIGNALFD
2585 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2586#endif
2587
2588 if (!(flags & EVBACKEND_MASK))
1418 flags |= ev_recommended_backends (); 2589 flags |= ev_recommended_backends ();
1419 2590
2591#if EV_USE_IOCP
2592 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2593#endif
1420#if EV_USE_PORT 2594#if EV_USE_PORT
1421 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2595 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1422#endif 2596#endif
1423#if EV_USE_KQUEUE 2597#if EV_USE_KQUEUE
1424 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2598 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1433 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2607 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1434#endif 2608#endif
1435 2609
1436 ev_prepare_init (&pending_w, pendingcb); 2610 ev_prepare_init (&pending_w, pendingcb);
1437 2611
2612#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1438 ev_init (&pipe_w, pipecb); 2613 ev_init (&pipe_w, pipecb);
1439 ev_set_priority (&pipe_w, EV_MAXPRI); 2614 ev_set_priority (&pipe_w, EV_MAXPRI);
2615#endif
1440 } 2616 }
1441} 2617}
1442 2618
1443/* free up a loop structure */ 2619/* free up a loop structure */
1444static void noinline 2620void ecb_cold
1445loop_destroy (EV_P) 2621ev_loop_destroy (EV_P)
1446{ 2622{
1447 int i; 2623 int i;
1448 2624
2625#if EV_MULTIPLICITY
2626 /* mimic free (0) */
2627 if (!EV_A)
2628 return;
2629#endif
2630
2631#if EV_CLEANUP_ENABLE
2632 /* queue cleanup watchers (and execute them) */
2633 if (expect_false (cleanupcnt))
2634 {
2635 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2636 EV_INVOKE_PENDING;
2637 }
2638#endif
2639
2640#if EV_CHILD_ENABLE
2641 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2642 {
2643 ev_ref (EV_A); /* child watcher */
2644 ev_signal_stop (EV_A_ &childev);
2645 }
2646#endif
2647
1449 if (ev_is_active (&pipe_w)) 2648 if (ev_is_active (&pipe_w))
1450 { 2649 {
1451 ev_ref (EV_A); /* signal watcher */ 2650 /*ev_ref (EV_A);*/
1452 ev_io_stop (EV_A_ &pipe_w); 2651 /*ev_io_stop (EV_A_ &pipe_w);*/
1453 2652
2653 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2654 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2655 }
2656
1454#if EV_USE_EVENTFD 2657#if EV_USE_SIGNALFD
1455 if (evfd >= 0) 2658 if (ev_is_active (&sigfd_w))
1456 close (evfd); 2659 close (sigfd);
1457#endif 2660#endif
1458
1459 if (evpipe [0] >= 0)
1460 {
1461 close (evpipe [0]);
1462 close (evpipe [1]);
1463 }
1464 }
1465 2661
1466#if EV_USE_INOTIFY 2662#if EV_USE_INOTIFY
1467 if (fs_fd >= 0) 2663 if (fs_fd >= 0)
1468 close (fs_fd); 2664 close (fs_fd);
1469#endif 2665#endif
1470 2666
1471 if (backend_fd >= 0) 2667 if (backend_fd >= 0)
1472 close (backend_fd); 2668 close (backend_fd);
1473 2669
2670#if EV_USE_IOCP
2671 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2672#endif
1474#if EV_USE_PORT 2673#if EV_USE_PORT
1475 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2674 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1476#endif 2675#endif
1477#if EV_USE_KQUEUE 2676#if EV_USE_KQUEUE
1478 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2677 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1493#if EV_IDLE_ENABLE 2692#if EV_IDLE_ENABLE
1494 array_free (idle, [i]); 2693 array_free (idle, [i]);
1495#endif 2694#endif
1496 } 2695 }
1497 2696
1498 ev_free (anfds); anfdmax = 0; 2697 ev_free (anfds); anfds = 0; anfdmax = 0;
1499 2698
1500 /* have to use the microsoft-never-gets-it-right macro */ 2699 /* have to use the microsoft-never-gets-it-right macro */
1501 array_free (rfeed, EMPTY); 2700 array_free (rfeed, EMPTY);
1502 array_free (fdchange, EMPTY); 2701 array_free (fdchange, EMPTY);
1503 array_free (timer, EMPTY); 2702 array_free (timer, EMPTY);
… …
1505 array_free (periodic, EMPTY); 2704 array_free (periodic, EMPTY);
1506#endif 2705#endif
1507#if EV_FORK_ENABLE 2706#if EV_FORK_ENABLE
1508 array_free (fork, EMPTY); 2707 array_free (fork, EMPTY);
1509#endif 2708#endif
2709#if EV_CLEANUP_ENABLE
2710 array_free (cleanup, EMPTY);
2711#endif
1510 array_free (prepare, EMPTY); 2712 array_free (prepare, EMPTY);
1511 array_free (check, EMPTY); 2713 array_free (check, EMPTY);
1512#if EV_ASYNC_ENABLE 2714#if EV_ASYNC_ENABLE
1513 array_free (async, EMPTY); 2715 array_free (async, EMPTY);
1514#endif 2716#endif
1515 2717
1516 backend = 0; 2718 backend = 0;
2719
2720#if EV_MULTIPLICITY
2721 if (ev_is_default_loop (EV_A))
2722#endif
2723 ev_default_loop_ptr = 0;
2724#if EV_MULTIPLICITY
2725 else
2726 ev_free (EV_A);
2727#endif
1517} 2728}
1518 2729
1519#if EV_USE_INOTIFY 2730#if EV_USE_INOTIFY
1520inline_size void infy_fork (EV_P); 2731inline_size void infy_fork (EV_P);
1521#endif 2732#endif
… …
1534#endif 2745#endif
1535#if EV_USE_INOTIFY 2746#if EV_USE_INOTIFY
1536 infy_fork (EV_A); 2747 infy_fork (EV_A);
1537#endif 2748#endif
1538 2749
2750#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1539 if (ev_is_active (&pipe_w)) 2751 if (ev_is_active (&pipe_w))
1540 { 2752 {
1541 /* this "locks" the handlers against writing to the pipe */ 2753 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1542 /* while we modify the fd vars */
1543 gotsig = 1;
1544#if EV_ASYNC_ENABLE
1545 gotasync = 1;
1546#endif
1547 2754
1548 ev_ref (EV_A); 2755 ev_ref (EV_A);
1549 ev_io_stop (EV_A_ &pipe_w); 2756 ev_io_stop (EV_A_ &pipe_w);
1550 2757
1551#if EV_USE_EVENTFD
1552 if (evfd >= 0)
1553 close (evfd);
1554#endif
1555
1556 if (evpipe [0] >= 0) 2758 if (evpipe [0] >= 0)
1557 { 2759 EV_WIN32_CLOSE_FD (evpipe [0]);
1558 close (evpipe [0]);
1559 close (evpipe [1]);
1560 }
1561 2760
1562 evpipe_init (EV_A); 2761 evpipe_init (EV_A);
1563 /* now iterate over everything, in case we missed something */ 2762 /* iterate over everything, in case we missed something before */
1564 pipecb (EV_A_ &pipe_w, EV_READ); 2763 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1565 } 2764 }
2765#endif
1566 2766
1567 postfork = 0; 2767 postfork = 0;
1568} 2768}
1569 2769
1570#if EV_MULTIPLICITY 2770#if EV_MULTIPLICITY
1571 2771
1572struct ev_loop * 2772struct ev_loop * ecb_cold
1573ev_loop_new (unsigned int flags) 2773ev_loop_new (unsigned int flags) EV_THROW
1574{ 2774{
1575 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2775 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1576 2776
1577 memset (loop, 0, sizeof (struct ev_loop)); 2777 memset (EV_A, 0, sizeof (struct ev_loop));
1578
1579 loop_init (EV_A_ flags); 2778 loop_init (EV_A_ flags);
1580 2779
1581 if (ev_backend (EV_A)) 2780 if (ev_backend (EV_A))
1582 return loop; 2781 return EV_A;
1583 2782
2783 ev_free (EV_A);
1584 return 0; 2784 return 0;
1585} 2785}
1586 2786
1587void 2787#endif /* multiplicity */
1588ev_loop_destroy (EV_P)
1589{
1590 loop_destroy (EV_A);
1591 ev_free (loop);
1592}
1593
1594void
1595ev_loop_fork (EV_P)
1596{
1597 postfork = 1; /* must be in line with ev_default_fork */
1598}
1599 2788
1600#if EV_VERIFY 2789#if EV_VERIFY
1601static void noinline 2790static void noinline ecb_cold
1602verify_watcher (EV_P_ W w) 2791verify_watcher (EV_P_ W w)
1603{ 2792{
1604 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2793 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1605 2794
1606 if (w->pending) 2795 if (w->pending)
1607 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2796 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1608} 2797}
1609 2798
1610static void noinline 2799static void noinline ecb_cold
1611verify_heap (EV_P_ ANHE *heap, int N) 2800verify_heap (EV_P_ ANHE *heap, int N)
1612{ 2801{
1613 int i; 2802 int i;
1614 2803
1615 for (i = HEAP0; i < N + HEAP0; ++i) 2804 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1620 2809
1621 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2810 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1622 } 2811 }
1623} 2812}
1624 2813
1625static void noinline 2814static void noinline ecb_cold
1626array_verify (EV_P_ W *ws, int cnt) 2815array_verify (EV_P_ W *ws, int cnt)
1627{ 2816{
1628 while (cnt--) 2817 while (cnt--)
1629 { 2818 {
1630 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2819 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1631 verify_watcher (EV_A_ ws [cnt]); 2820 verify_watcher (EV_A_ ws [cnt]);
1632 } 2821 }
1633} 2822}
1634#endif 2823#endif
1635 2824
1636void 2825#if EV_FEATURE_API
1637ev_loop_verify (EV_P) 2826void ecb_cold
2827ev_verify (EV_P) EV_THROW
1638{ 2828{
1639#if EV_VERIFY 2829#if EV_VERIFY
1640 int i; 2830 int i;
1641 WL w; 2831 WL w, w2;
1642 2832
1643 assert (activecnt >= -1); 2833 assert (activecnt >= -1);
1644 2834
1645 assert (fdchangemax >= fdchangecnt); 2835 assert (fdchangemax >= fdchangecnt);
1646 for (i = 0; i < fdchangecnt; ++i) 2836 for (i = 0; i < fdchangecnt; ++i)
1647 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2837 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1648 2838
1649 assert (anfdmax >= 0); 2839 assert (anfdmax >= 0);
1650 for (i = 0; i < anfdmax; ++i) 2840 for (i = 0; i < anfdmax; ++i)
2841 {
2842 int j = 0;
2843
1651 for (w = anfds [i].head; w; w = w->next) 2844 for (w = w2 = anfds [i].head; w; w = w->next)
1652 { 2845 {
1653 verify_watcher (EV_A_ (W)w); 2846 verify_watcher (EV_A_ (W)w);
2847
2848 if (j++ & 1)
2849 {
2850 assert (("libev: io watcher list contains a loop", w != w2));
2851 w2 = w2->next;
2852 }
2853
1654 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2854 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1655 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2855 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1656 } 2856 }
2857 }
1657 2858
1658 assert (timermax >= timercnt); 2859 assert (timermax >= timercnt);
1659 verify_heap (EV_A_ timers, timercnt); 2860 verify_heap (EV_A_ timers, timercnt);
1660 2861
1661#if EV_PERIODIC_ENABLE 2862#if EV_PERIODIC_ENABLE
… …
1676#if EV_FORK_ENABLE 2877#if EV_FORK_ENABLE
1677 assert (forkmax >= forkcnt); 2878 assert (forkmax >= forkcnt);
1678 array_verify (EV_A_ (W *)forks, forkcnt); 2879 array_verify (EV_A_ (W *)forks, forkcnt);
1679#endif 2880#endif
1680 2881
2882#if EV_CLEANUP_ENABLE
2883 assert (cleanupmax >= cleanupcnt);
2884 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2885#endif
2886
1681#if EV_ASYNC_ENABLE 2887#if EV_ASYNC_ENABLE
1682 assert (asyncmax >= asynccnt); 2888 assert (asyncmax >= asynccnt);
1683 array_verify (EV_A_ (W *)asyncs, asynccnt); 2889 array_verify (EV_A_ (W *)asyncs, asynccnt);
1684#endif 2890#endif
1685 2891
2892#if EV_PREPARE_ENABLE
1686 assert (preparemax >= preparecnt); 2893 assert (preparemax >= preparecnt);
1687 array_verify (EV_A_ (W *)prepares, preparecnt); 2894 array_verify (EV_A_ (W *)prepares, preparecnt);
2895#endif
1688 2896
2897#if EV_CHECK_ENABLE
1689 assert (checkmax >= checkcnt); 2898 assert (checkmax >= checkcnt);
1690 array_verify (EV_A_ (W *)checks, checkcnt); 2899 array_verify (EV_A_ (W *)checks, checkcnt);
2900#endif
1691 2901
1692# if 0 2902# if 0
2903#if EV_CHILD_ENABLE
1693 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2904 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1694 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2905 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2906#endif
1695# endif 2907# endif
1696#endif 2908#endif
1697} 2909}
1698 2910#endif
1699#endif /* multiplicity */
1700 2911
1701#if EV_MULTIPLICITY 2912#if EV_MULTIPLICITY
1702struct ev_loop * 2913struct ev_loop * ecb_cold
1703ev_default_loop_init (unsigned int flags)
1704#else 2914#else
1705int 2915int
2916#endif
1706ev_default_loop (unsigned int flags) 2917ev_default_loop (unsigned int flags) EV_THROW
1707#endif
1708{ 2918{
1709 if (!ev_default_loop_ptr) 2919 if (!ev_default_loop_ptr)
1710 { 2920 {
1711#if EV_MULTIPLICITY 2921#if EV_MULTIPLICITY
1712 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2922 EV_P = ev_default_loop_ptr = &default_loop_struct;
1713#else 2923#else
1714 ev_default_loop_ptr = 1; 2924 ev_default_loop_ptr = 1;
1715#endif 2925#endif
1716 2926
1717 loop_init (EV_A_ flags); 2927 loop_init (EV_A_ flags);
1718 2928
1719 if (ev_backend (EV_A)) 2929 if (ev_backend (EV_A))
1720 { 2930 {
1721#ifndef _WIN32 2931#if EV_CHILD_ENABLE
1722 ev_signal_init (&childev, childcb, SIGCHLD); 2932 ev_signal_init (&childev, childcb, SIGCHLD);
1723 ev_set_priority (&childev, EV_MAXPRI); 2933 ev_set_priority (&childev, EV_MAXPRI);
1724 ev_signal_start (EV_A_ &childev); 2934 ev_signal_start (EV_A_ &childev);
1725 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2935 ev_unref (EV_A); /* child watcher should not keep loop alive */
1726#endif 2936#endif
… …
1731 2941
1732 return ev_default_loop_ptr; 2942 return ev_default_loop_ptr;
1733} 2943}
1734 2944
1735void 2945void
1736ev_default_destroy (void) 2946ev_loop_fork (EV_P) EV_THROW
1737{ 2947{
1738#if EV_MULTIPLICITY 2948 postfork = 1;
1739 struct ev_loop *loop = ev_default_loop_ptr;
1740#endif
1741
1742 ev_default_loop_ptr = 0;
1743
1744#ifndef _WIN32
1745 ev_ref (EV_A); /* child watcher */
1746 ev_signal_stop (EV_A_ &childev);
1747#endif
1748
1749 loop_destroy (EV_A);
1750}
1751
1752void
1753ev_default_fork (void)
1754{
1755#if EV_MULTIPLICITY
1756 struct ev_loop *loop = ev_default_loop_ptr;
1757#endif
1758
1759 postfork = 1; /* must be in line with ev_loop_fork */
1760} 2949}
1761 2950
1762/*****************************************************************************/ 2951/*****************************************************************************/
1763 2952
1764void 2953void
1765ev_invoke (EV_P_ void *w, int revents) 2954ev_invoke (EV_P_ void *w, int revents)
1766{ 2955{
1767 EV_CB_INVOKE ((W)w, revents); 2956 EV_CB_INVOKE ((W)w, revents);
1768} 2957}
1769 2958
1770inline_speed void 2959unsigned int
1771call_pending (EV_P) 2960ev_pending_count (EV_P) EV_THROW
1772{ 2961{
1773 int pri; 2962 int pri;
2963 unsigned int count = 0;
1774 2964
1775 for (pri = NUMPRI; pri--; ) 2965 for (pri = NUMPRI; pri--; )
2966 count += pendingcnt [pri];
2967
2968 return count;
2969}
2970
2971void noinline
2972ev_invoke_pending (EV_P)
2973{
2974 pendingpri = NUMPRI;
2975
2976 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2977 {
2978 --pendingpri;
2979
1776 while (pendingcnt [pri]) 2980 while (pendingcnt [pendingpri])
1777 { 2981 {
1778 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2982 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1779 2983
1780 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1781 /* ^ this is no longer true, as pending_w could be here */
1782
1783 p->w->pending = 0; 2984 p->w->pending = 0;
1784 EV_CB_INVOKE (p->w, p->events); 2985 EV_CB_INVOKE (p->w, p->events);
1785 EV_FREQUENT_CHECK; 2986 EV_FREQUENT_CHECK;
1786 } 2987 }
2988 }
1787} 2989}
1788 2990
1789#if EV_IDLE_ENABLE 2991#if EV_IDLE_ENABLE
1790/* make idle watchers pending. this handles the "call-idle */ 2992/* make idle watchers pending. this handles the "call-idle */
1791/* only when higher priorities are idle" logic */ 2993/* only when higher priorities are idle" logic */
… …
1843 EV_FREQUENT_CHECK; 3045 EV_FREQUENT_CHECK;
1844 feed_reverse (EV_A_ (W)w); 3046 feed_reverse (EV_A_ (W)w);
1845 } 3047 }
1846 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 3048 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1847 3049
1848 feed_reverse_done (EV_A_ EV_TIMEOUT); 3050 feed_reverse_done (EV_A_ EV_TIMER);
1849 } 3051 }
1850} 3052}
1851 3053
1852#if EV_PERIODIC_ENABLE 3054#if EV_PERIODIC_ENABLE
3055
3056static void noinline
3057periodic_recalc (EV_P_ ev_periodic *w)
3058{
3059 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
3060 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
3061
3062 /* the above almost always errs on the low side */
3063 while (at <= ev_rt_now)
3064 {
3065 ev_tstamp nat = at + w->interval;
3066
3067 /* when resolution fails us, we use ev_rt_now */
3068 if (expect_false (nat == at))
3069 {
3070 at = ev_rt_now;
3071 break;
3072 }
3073
3074 at = nat;
3075 }
3076
3077 ev_at (w) = at;
3078}
3079
1853/* make periodics pending */ 3080/* make periodics pending */
1854inline_size void 3081inline_size void
1855periodics_reify (EV_P) 3082periodics_reify (EV_P)
1856{ 3083{
1857 EV_FREQUENT_CHECK; 3084 EV_FREQUENT_CHECK;
1858 3085
1859 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3086 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1860 { 3087 {
1861 int feed_count = 0;
1862
1863 do 3088 do
1864 { 3089 {
1865 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3090 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1866 3091
1867 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3092 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
1876 ANHE_at_cache (periodics [HEAP0]); 3101 ANHE_at_cache (periodics [HEAP0]);
1877 downheap (periodics, periodiccnt, HEAP0); 3102 downheap (periodics, periodiccnt, HEAP0);
1878 } 3103 }
1879 else if (w->interval) 3104 else if (w->interval)
1880 { 3105 {
1881 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3106 periodic_recalc (EV_A_ w);
1882 /* if next trigger time is not sufficiently in the future, put it there */
1883 /* this might happen because of floating point inexactness */
1884 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1885 {
1886 ev_at (w) += w->interval;
1887
1888 /* if interval is unreasonably low we might still have a time in the past */
1889 /* so correct this. this will make the periodic very inexact, but the user */
1890 /* has effectively asked to get triggered more often than possible */
1891 if (ev_at (w) < ev_rt_now)
1892 ev_at (w) = ev_rt_now;
1893 }
1894
1895 ANHE_at_cache (periodics [HEAP0]); 3107 ANHE_at_cache (periodics [HEAP0]);
1896 downheap (periodics, periodiccnt, HEAP0); 3108 downheap (periodics, periodiccnt, HEAP0);
1897 } 3109 }
1898 else 3110 else
1899 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 3111 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1906 feed_reverse_done (EV_A_ EV_PERIODIC); 3118 feed_reverse_done (EV_A_ EV_PERIODIC);
1907 } 3119 }
1908} 3120}
1909 3121
1910/* simply recalculate all periodics */ 3122/* simply recalculate all periodics */
1911/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 3123/* TODO: maybe ensure that at least one event happens when jumping forward? */
1912static void noinline 3124static void noinline ecb_cold
1913periodics_reschedule (EV_P) 3125periodics_reschedule (EV_P)
1914{ 3126{
1915 int i; 3127 int i;
1916 3128
1917 /* adjust periodics after time jump */ 3129 /* adjust periodics after time jump */
… …
1920 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 3132 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1921 3133
1922 if (w->reschedule_cb) 3134 if (w->reschedule_cb)
1923 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3135 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1924 else if (w->interval) 3136 else if (w->interval)
1925 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 3137 periodic_recalc (EV_A_ w);
1926 3138
1927 ANHE_at_cache (periodics [i]); 3139 ANHE_at_cache (periodics [i]);
1928 } 3140 }
1929 3141
1930 reheap (periodics, periodiccnt); 3142 reheap (periodics, periodiccnt);
1931} 3143}
1932#endif 3144#endif
1933 3145
1934/* adjust all timers by a given offset */ 3146/* adjust all timers by a given offset */
1935static void noinline 3147static void noinline ecb_cold
1936timers_reschedule (EV_P_ ev_tstamp adjust) 3148timers_reschedule (EV_P_ ev_tstamp adjust)
1937{ 3149{
1938 int i; 3150 int i;
1939 3151
1940 for (i = 0; i < timercnt; ++i) 3152 for (i = 0; i < timercnt; ++i)
… …
1944 ANHE_at_cache (*he); 3156 ANHE_at_cache (*he);
1945 } 3157 }
1946} 3158}
1947 3159
1948/* fetch new monotonic and realtime times from the kernel */ 3160/* fetch new monotonic and realtime times from the kernel */
1949/* also detetc if there was a timejump, and act accordingly */ 3161/* also detect if there was a timejump, and act accordingly */
1950inline_speed void 3162inline_speed void
1951time_update (EV_P_ ev_tstamp max_block) 3163time_update (EV_P_ ev_tstamp max_block)
1952{ 3164{
1953 int i;
1954
1955#if EV_USE_MONOTONIC 3165#if EV_USE_MONOTONIC
1956 if (expect_true (have_monotonic)) 3166 if (expect_true (have_monotonic))
1957 { 3167 {
3168 int i;
1958 ev_tstamp odiff = rtmn_diff; 3169 ev_tstamp odiff = rtmn_diff;
1959 3170
1960 mn_now = get_clock (); 3171 mn_now = get_clock ();
1961 3172
1962 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 3173 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1978 * doesn't hurt either as we only do this on time-jumps or 3189 * doesn't hurt either as we only do this on time-jumps or
1979 * in the unlikely event of having been preempted here. 3190 * in the unlikely event of having been preempted here.
1980 */ 3191 */
1981 for (i = 4; --i; ) 3192 for (i = 4; --i; )
1982 { 3193 {
3194 ev_tstamp diff;
1983 rtmn_diff = ev_rt_now - mn_now; 3195 rtmn_diff = ev_rt_now - mn_now;
1984 3196
3197 diff = odiff - rtmn_diff;
3198
1985 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 3199 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1986 return; /* all is well */ 3200 return; /* all is well */
1987 3201
1988 ev_rt_now = ev_time (); 3202 ev_rt_now = ev_time ();
1989 mn_now = get_clock (); 3203 mn_now = get_clock ();
1990 now_floor = mn_now; 3204 now_floor = mn_now;
… …
2012 3226
2013 mn_now = ev_rt_now; 3227 mn_now = ev_rt_now;
2014 } 3228 }
2015} 3229}
2016 3230
2017static int loop_done; 3231int
2018
2019void
2020ev_loop (EV_P_ int flags) 3232ev_run (EV_P_ int flags)
2021{ 3233{
3234#if EV_FEATURE_API
3235 ++loop_depth;
3236#endif
3237
3238 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3239
2022 loop_done = EVUNLOOP_CANCEL; 3240 loop_done = EVBREAK_CANCEL;
2023 3241
2024 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3242 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2025 3243
2026 do 3244 do
2027 { 3245 {
2028#if EV_VERIFY >= 2 3246#if EV_VERIFY >= 2
2029 ev_loop_verify (EV_A); 3247 ev_verify (EV_A);
2030#endif 3248#endif
2031 3249
2032#ifndef _WIN32 3250#ifndef _WIN32
2033 if (expect_false (curpid)) /* penalise the forking check even more */ 3251 if (expect_false (curpid)) /* penalise the forking check even more */
2034 if (expect_false (getpid () != curpid)) 3252 if (expect_false (getpid () != curpid))
… …
2042 /* we might have forked, so queue fork handlers */ 3260 /* we might have forked, so queue fork handlers */
2043 if (expect_false (postfork)) 3261 if (expect_false (postfork))
2044 if (forkcnt) 3262 if (forkcnt)
2045 { 3263 {
2046 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3264 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2047 call_pending (EV_A); 3265 EV_INVOKE_PENDING;
2048 } 3266 }
2049#endif 3267#endif
2050 3268
3269#if EV_PREPARE_ENABLE
2051 /* queue prepare watchers (and execute them) */ 3270 /* queue prepare watchers (and execute them) */
2052 if (expect_false (preparecnt)) 3271 if (expect_false (preparecnt))
2053 { 3272 {
2054 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3273 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2055 call_pending (EV_A); 3274 EV_INVOKE_PENDING;
2056 } 3275 }
3276#endif
3277
3278 if (expect_false (loop_done))
3279 break;
2057 3280
2058 /* we might have forked, so reify kernel state if necessary */ 3281 /* we might have forked, so reify kernel state if necessary */
2059 if (expect_false (postfork)) 3282 if (expect_false (postfork))
2060 loop_fork (EV_A); 3283 loop_fork (EV_A);
2061 3284
… …
2065 /* calculate blocking time */ 3288 /* calculate blocking time */
2066 { 3289 {
2067 ev_tstamp waittime = 0.; 3290 ev_tstamp waittime = 0.;
2068 ev_tstamp sleeptime = 0.; 3291 ev_tstamp sleeptime = 0.;
2069 3292
3293 /* remember old timestamp for io_blocktime calculation */
3294 ev_tstamp prev_mn_now = mn_now;
3295
3296 /* update time to cancel out callback processing overhead */
3297 time_update (EV_A_ 1e100);
3298
3299 /* from now on, we want a pipe-wake-up */
3300 pipe_write_wanted = 1;
3301
3302 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3303
2070 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3304 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2071 { 3305 {
2072 /* update time to cancel out callback processing overhead */
2073 time_update (EV_A_ 1e100);
2074
2075 waittime = MAX_BLOCKTIME; 3306 waittime = MAX_BLOCKTIME;
2076 3307
2077 if (timercnt) 3308 if (timercnt)
2078 { 3309 {
2079 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3310 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2080 if (waittime > to) waittime = to; 3311 if (waittime > to) waittime = to;
2081 } 3312 }
2082 3313
2083#if EV_PERIODIC_ENABLE 3314#if EV_PERIODIC_ENABLE
2084 if (periodiccnt) 3315 if (periodiccnt)
2085 { 3316 {
2086 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3317 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2087 if (waittime > to) waittime = to; 3318 if (waittime > to) waittime = to;
2088 } 3319 }
2089#endif 3320#endif
2090 3321
3322 /* don't let timeouts decrease the waittime below timeout_blocktime */
2091 if (expect_false (waittime < timeout_blocktime)) 3323 if (expect_false (waittime < timeout_blocktime))
2092 waittime = timeout_blocktime; 3324 waittime = timeout_blocktime;
2093 3325
2094 sleeptime = waittime - backend_fudge; 3326 /* at this point, we NEED to wait, so we have to ensure */
3327 /* to pass a minimum nonzero value to the backend */
3328 if (expect_false (waittime < backend_mintime))
3329 waittime = backend_mintime;
2095 3330
3331 /* extra check because io_blocktime is commonly 0 */
2096 if (expect_true (sleeptime > io_blocktime)) 3332 if (expect_false (io_blocktime))
2097 sleeptime = io_blocktime;
2098
2099 if (sleeptime)
2100 { 3333 {
3334 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3335
3336 if (sleeptime > waittime - backend_mintime)
3337 sleeptime = waittime - backend_mintime;
3338
3339 if (expect_true (sleeptime > 0.))
3340 {
2101 ev_sleep (sleeptime); 3341 ev_sleep (sleeptime);
2102 waittime -= sleeptime; 3342 waittime -= sleeptime;
3343 }
2103 } 3344 }
2104 } 3345 }
2105 3346
3347#if EV_FEATURE_API
2106 ++loop_count; 3348 ++loop_count;
3349#endif
3350 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2107 backend_poll (EV_A_ waittime); 3351 backend_poll (EV_A_ waittime);
3352 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3353
3354 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3355
3356 ECB_MEMORY_FENCE_ACQUIRE;
3357 if (pipe_write_skipped)
3358 {
3359 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3360 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3361 }
3362
2108 3363
2109 /* update ev_rt_now, do magic */ 3364 /* update ev_rt_now, do magic */
2110 time_update (EV_A_ waittime + sleeptime); 3365 time_update (EV_A_ waittime + sleeptime);
2111 } 3366 }
2112 3367
… …
2119#if EV_IDLE_ENABLE 3374#if EV_IDLE_ENABLE
2120 /* queue idle watchers unless other events are pending */ 3375 /* queue idle watchers unless other events are pending */
2121 idle_reify (EV_A); 3376 idle_reify (EV_A);
2122#endif 3377#endif
2123 3378
3379#if EV_CHECK_ENABLE
2124 /* queue check watchers, to be executed first */ 3380 /* queue check watchers, to be executed first */
2125 if (expect_false (checkcnt)) 3381 if (expect_false (checkcnt))
2126 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3382 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3383#endif
2127 3384
2128 call_pending (EV_A); 3385 EV_INVOKE_PENDING;
2129 } 3386 }
2130 while (expect_true ( 3387 while (expect_true (
2131 activecnt 3388 activecnt
2132 && !loop_done 3389 && !loop_done
2133 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3390 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2134 )); 3391 ));
2135 3392
2136 if (loop_done == EVUNLOOP_ONE) 3393 if (loop_done == EVBREAK_ONE)
2137 loop_done = EVUNLOOP_CANCEL; 3394 loop_done = EVBREAK_CANCEL;
3395
3396#if EV_FEATURE_API
3397 --loop_depth;
3398#endif
3399
3400 return activecnt;
2138} 3401}
2139 3402
2140void 3403void
2141ev_unloop (EV_P_ int how) 3404ev_break (EV_P_ int how) EV_THROW
2142{ 3405{
2143 loop_done = how; 3406 loop_done = how;
2144} 3407}
2145 3408
2146void 3409void
2147ev_ref (EV_P) 3410ev_ref (EV_P) EV_THROW
2148{ 3411{
2149 ++activecnt; 3412 ++activecnt;
2150} 3413}
2151 3414
2152void 3415void
2153ev_unref (EV_P) 3416ev_unref (EV_P) EV_THROW
2154{ 3417{
2155 --activecnt; 3418 --activecnt;
2156} 3419}
2157 3420
2158void 3421void
2159ev_now_update (EV_P) 3422ev_now_update (EV_P) EV_THROW
2160{ 3423{
2161 time_update (EV_A_ 1e100); 3424 time_update (EV_A_ 1e100);
2162} 3425}
2163 3426
2164void 3427void
2165ev_suspend (EV_P) 3428ev_suspend (EV_P) EV_THROW
2166{ 3429{
2167 ev_now_update (EV_A); 3430 ev_now_update (EV_A);
2168} 3431}
2169 3432
2170void 3433void
2171ev_resume (EV_P) 3434ev_resume (EV_P) EV_THROW
2172{ 3435{
2173 ev_tstamp mn_prev = mn_now; 3436 ev_tstamp mn_prev = mn_now;
2174 3437
2175 ev_now_update (EV_A); 3438 ev_now_update (EV_A);
2176 timers_reschedule (EV_A_ mn_now - mn_prev); 3439 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2193inline_size void 3456inline_size void
2194wlist_del (WL *head, WL elem) 3457wlist_del (WL *head, WL elem)
2195{ 3458{
2196 while (*head) 3459 while (*head)
2197 { 3460 {
2198 if (*head == elem) 3461 if (expect_true (*head == elem))
2199 { 3462 {
2200 *head = elem->next; 3463 *head = elem->next;
2201 return; 3464 break;
2202 } 3465 }
2203 3466
2204 head = &(*head)->next; 3467 head = &(*head)->next;
2205 } 3468 }
2206} 3469}
… …
2215 w->pending = 0; 3478 w->pending = 0;
2216 } 3479 }
2217} 3480}
2218 3481
2219int 3482int
2220ev_clear_pending (EV_P_ void *w) 3483ev_clear_pending (EV_P_ void *w) EV_THROW
2221{ 3484{
2222 W w_ = (W)w; 3485 W w_ = (W)w;
2223 int pending = w_->pending; 3486 int pending = w_->pending;
2224 3487
2225 if (expect_true (pending)) 3488 if (expect_true (pending))
… …
2234} 3497}
2235 3498
2236inline_size void 3499inline_size void
2237pri_adjust (EV_P_ W w) 3500pri_adjust (EV_P_ W w)
2238{ 3501{
2239 int pri = w->priority; 3502 int pri = ev_priority (w);
2240 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3503 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2241 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3504 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2242 w->priority = pri; 3505 ev_set_priority (w, pri);
2243} 3506}
2244 3507
2245inline_speed void 3508inline_speed void
2246ev_start (EV_P_ W w, int active) 3509ev_start (EV_P_ W w, int active)
2247{ 3510{
… …
2258} 3521}
2259 3522
2260/*****************************************************************************/ 3523/*****************************************************************************/
2261 3524
2262void noinline 3525void noinline
2263ev_io_start (EV_P_ ev_io *w) 3526ev_io_start (EV_P_ ev_io *w) EV_THROW
2264{ 3527{
2265 int fd = w->fd; 3528 int fd = w->fd;
2266 3529
2267 if (expect_false (ev_is_active (w))) 3530 if (expect_false (ev_is_active (w)))
2268 return; 3531 return;
2269 3532
2270 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3533 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2271 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 3534 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2272 3535
2273 EV_FREQUENT_CHECK; 3536 EV_FREQUENT_CHECK;
2274 3537
2275 ev_start (EV_A_ (W)w, 1); 3538 ev_start (EV_A_ (W)w, 1);
2276 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3539 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2277 wlist_add (&anfds[fd].head, (WL)w); 3540 wlist_add (&anfds[fd].head, (WL)w);
2278 3541
3542 /* common bug, apparently */
3543 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3544
2279 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3545 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2280 w->events &= ~EV__IOFDSET; 3546 w->events &= ~EV__IOFDSET;
2281 3547
2282 EV_FREQUENT_CHECK; 3548 EV_FREQUENT_CHECK;
2283} 3549}
2284 3550
2285void noinline 3551void noinline
2286ev_io_stop (EV_P_ ev_io *w) 3552ev_io_stop (EV_P_ ev_io *w) EV_THROW
2287{ 3553{
2288 clear_pending (EV_A_ (W)w); 3554 clear_pending (EV_A_ (W)w);
2289 if (expect_false (!ev_is_active (w))) 3555 if (expect_false (!ev_is_active (w)))
2290 return; 3556 return;
2291 3557
… …
2294 EV_FREQUENT_CHECK; 3560 EV_FREQUENT_CHECK;
2295 3561
2296 wlist_del (&anfds[w->fd].head, (WL)w); 3562 wlist_del (&anfds[w->fd].head, (WL)w);
2297 ev_stop (EV_A_ (W)w); 3563 ev_stop (EV_A_ (W)w);
2298 3564
2299 fd_change (EV_A_ w->fd, 1); 3565 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2300 3566
2301 EV_FREQUENT_CHECK; 3567 EV_FREQUENT_CHECK;
2302} 3568}
2303 3569
2304void noinline 3570void noinline
2305ev_timer_start (EV_P_ ev_timer *w) 3571ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2306{ 3572{
2307 if (expect_false (ev_is_active (w))) 3573 if (expect_false (ev_is_active (w)))
2308 return; 3574 return;
2309 3575
2310 ev_at (w) += mn_now; 3576 ev_at (w) += mn_now;
… …
2324 3590
2325 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3591 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2326} 3592}
2327 3593
2328void noinline 3594void noinline
2329ev_timer_stop (EV_P_ ev_timer *w) 3595ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2330{ 3596{
2331 clear_pending (EV_A_ (W)w); 3597 clear_pending (EV_A_ (W)w);
2332 if (expect_false (!ev_is_active (w))) 3598 if (expect_false (!ev_is_active (w)))
2333 return; 3599 return;
2334 3600
… …
2346 timers [active] = timers [timercnt + HEAP0]; 3612 timers [active] = timers [timercnt + HEAP0];
2347 adjustheap (timers, timercnt, active); 3613 adjustheap (timers, timercnt, active);
2348 } 3614 }
2349 } 3615 }
2350 3616
2351 EV_FREQUENT_CHECK;
2352
2353 ev_at (w) -= mn_now; 3617 ev_at (w) -= mn_now;
2354 3618
2355 ev_stop (EV_A_ (W)w); 3619 ev_stop (EV_A_ (W)w);
3620
3621 EV_FREQUENT_CHECK;
2356} 3622}
2357 3623
2358void noinline 3624void noinline
2359ev_timer_again (EV_P_ ev_timer *w) 3625ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2360{ 3626{
2361 EV_FREQUENT_CHECK; 3627 EV_FREQUENT_CHECK;
3628
3629 clear_pending (EV_A_ (W)w);
2362 3630
2363 if (ev_is_active (w)) 3631 if (ev_is_active (w))
2364 { 3632 {
2365 if (w->repeat) 3633 if (w->repeat)
2366 { 3634 {
… …
2378 } 3646 }
2379 3647
2380 EV_FREQUENT_CHECK; 3648 EV_FREQUENT_CHECK;
2381} 3649}
2382 3650
3651ev_tstamp
3652ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3653{
3654 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3655}
3656
2383#if EV_PERIODIC_ENABLE 3657#if EV_PERIODIC_ENABLE
2384void noinline 3658void noinline
2385ev_periodic_start (EV_P_ ev_periodic *w) 3659ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2386{ 3660{
2387 if (expect_false (ev_is_active (w))) 3661 if (expect_false (ev_is_active (w)))
2388 return; 3662 return;
2389 3663
2390 if (w->reschedule_cb) 3664 if (w->reschedule_cb)
2391 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3665 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2392 else if (w->interval) 3666 else if (w->interval)
2393 { 3667 {
2394 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3668 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2395 /* this formula differs from the one in periodic_reify because we do not always round up */ 3669 periodic_recalc (EV_A_ w);
2396 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2397 } 3670 }
2398 else 3671 else
2399 ev_at (w) = w->offset; 3672 ev_at (w) = w->offset;
2400 3673
2401 EV_FREQUENT_CHECK; 3674 EV_FREQUENT_CHECK;
… …
2411 3684
2412 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3685 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2413} 3686}
2414 3687
2415void noinline 3688void noinline
2416ev_periodic_stop (EV_P_ ev_periodic *w) 3689ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2417{ 3690{
2418 clear_pending (EV_A_ (W)w); 3691 clear_pending (EV_A_ (W)w);
2419 if (expect_false (!ev_is_active (w))) 3692 if (expect_false (!ev_is_active (w)))
2420 return; 3693 return;
2421 3694
… …
2433 periodics [active] = periodics [periodiccnt + HEAP0]; 3706 periodics [active] = periodics [periodiccnt + HEAP0];
2434 adjustheap (periodics, periodiccnt, active); 3707 adjustheap (periodics, periodiccnt, active);
2435 } 3708 }
2436 } 3709 }
2437 3710
2438 EV_FREQUENT_CHECK;
2439
2440 ev_stop (EV_A_ (W)w); 3711 ev_stop (EV_A_ (W)w);
3712
3713 EV_FREQUENT_CHECK;
2441} 3714}
2442 3715
2443void noinline 3716void noinline
2444ev_periodic_again (EV_P_ ev_periodic *w) 3717ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2445{ 3718{
2446 /* TODO: use adjustheap and recalculation */ 3719 /* TODO: use adjustheap and recalculation */
2447 ev_periodic_stop (EV_A_ w); 3720 ev_periodic_stop (EV_A_ w);
2448 ev_periodic_start (EV_A_ w); 3721 ev_periodic_start (EV_A_ w);
2449} 3722}
… …
2451 3724
2452#ifndef SA_RESTART 3725#ifndef SA_RESTART
2453# define SA_RESTART 0 3726# define SA_RESTART 0
2454#endif 3727#endif
2455 3728
3729#if EV_SIGNAL_ENABLE
3730
2456void noinline 3731void noinline
2457ev_signal_start (EV_P_ ev_signal *w) 3732ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2458{ 3733{
2459#if EV_MULTIPLICITY
2460 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2461#endif
2462 if (expect_false (ev_is_active (w))) 3734 if (expect_false (ev_is_active (w)))
2463 return; 3735 return;
2464 3736
2465 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3737 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2466 3738
2467 evpipe_init (EV_A); 3739#if EV_MULTIPLICITY
3740 assert (("libev: a signal must not be attached to two different loops",
3741 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2468 3742
2469 EV_FREQUENT_CHECK; 3743 signals [w->signum - 1].loop = EV_A;
3744 ECB_MEMORY_FENCE_RELEASE;
3745#endif
2470 3746
3747 EV_FREQUENT_CHECK;
3748
3749#if EV_USE_SIGNALFD
3750 if (sigfd == -2)
2471 { 3751 {
2472#ifndef _WIN32 3752 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2473 sigset_t full, prev; 3753 if (sigfd < 0 && errno == EINVAL)
2474 sigfillset (&full); 3754 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2475 sigprocmask (SIG_SETMASK, &full, &prev);
2476#endif
2477 3755
2478 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3756 if (sigfd >= 0)
3757 {
3758 fd_intern (sigfd); /* doing it twice will not hurt */
2479 3759
2480#ifndef _WIN32 3760 sigemptyset (&sigfd_set);
2481 sigprocmask (SIG_SETMASK, &prev, 0); 3761
2482#endif 3762 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3763 ev_set_priority (&sigfd_w, EV_MAXPRI);
3764 ev_io_start (EV_A_ &sigfd_w);
3765 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3766 }
2483 } 3767 }
3768
3769 if (sigfd >= 0)
3770 {
3771 /* TODO: check .head */
3772 sigaddset (&sigfd_set, w->signum);
3773 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3774
3775 signalfd (sigfd, &sigfd_set, 0);
3776 }
3777#endif
2484 3778
2485 ev_start (EV_A_ (W)w, 1); 3779 ev_start (EV_A_ (W)w, 1);
2486 wlist_add (&signals [w->signum - 1].head, (WL)w); 3780 wlist_add (&signals [w->signum - 1].head, (WL)w);
2487 3781
2488 if (!((WL)w)->next) 3782 if (!((WL)w)->next)
3783# if EV_USE_SIGNALFD
3784 if (sigfd < 0) /*TODO*/
3785# endif
2489 { 3786 {
2490#if _WIN32 3787# ifdef _WIN32
3788 evpipe_init (EV_A);
3789
2491 signal (w->signum, ev_sighandler); 3790 signal (w->signum, ev_sighandler);
2492#else 3791# else
2493 struct sigaction sa; 3792 struct sigaction sa;
3793
3794 evpipe_init (EV_A);
3795
2494 sa.sa_handler = ev_sighandler; 3796 sa.sa_handler = ev_sighandler;
2495 sigfillset (&sa.sa_mask); 3797 sigfillset (&sa.sa_mask);
2496 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3798 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2497 sigaction (w->signum, &sa, 0); 3799 sigaction (w->signum, &sa, 0);
3800
3801 if (origflags & EVFLAG_NOSIGMASK)
3802 {
3803 sigemptyset (&sa.sa_mask);
3804 sigaddset (&sa.sa_mask, w->signum);
3805 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3806 }
2498#endif 3807#endif
2499 } 3808 }
2500 3809
2501 EV_FREQUENT_CHECK; 3810 EV_FREQUENT_CHECK;
2502} 3811}
2503 3812
2504void noinline 3813void noinline
2505ev_signal_stop (EV_P_ ev_signal *w) 3814ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2506{ 3815{
2507 clear_pending (EV_A_ (W)w); 3816 clear_pending (EV_A_ (W)w);
2508 if (expect_false (!ev_is_active (w))) 3817 if (expect_false (!ev_is_active (w)))
2509 return; 3818 return;
2510 3819
… …
2512 3821
2513 wlist_del (&signals [w->signum - 1].head, (WL)w); 3822 wlist_del (&signals [w->signum - 1].head, (WL)w);
2514 ev_stop (EV_A_ (W)w); 3823 ev_stop (EV_A_ (W)w);
2515 3824
2516 if (!signals [w->signum - 1].head) 3825 if (!signals [w->signum - 1].head)
3826 {
3827#if EV_MULTIPLICITY
3828 signals [w->signum - 1].loop = 0; /* unattach from signal */
3829#endif
3830#if EV_USE_SIGNALFD
3831 if (sigfd >= 0)
3832 {
3833 sigset_t ss;
3834
3835 sigemptyset (&ss);
3836 sigaddset (&ss, w->signum);
3837 sigdelset (&sigfd_set, w->signum);
3838
3839 signalfd (sigfd, &sigfd_set, 0);
3840 sigprocmask (SIG_UNBLOCK, &ss, 0);
3841 }
3842 else
3843#endif
2517 signal (w->signum, SIG_DFL); 3844 signal (w->signum, SIG_DFL);
3845 }
2518 3846
2519 EV_FREQUENT_CHECK; 3847 EV_FREQUENT_CHECK;
2520} 3848}
3849
3850#endif
3851
3852#if EV_CHILD_ENABLE
2521 3853
2522void 3854void
2523ev_child_start (EV_P_ ev_child *w) 3855ev_child_start (EV_P_ ev_child *w) EV_THROW
2524{ 3856{
2525#if EV_MULTIPLICITY 3857#if EV_MULTIPLICITY
2526 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3858 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2527#endif 3859#endif
2528 if (expect_false (ev_is_active (w))) 3860 if (expect_false (ev_is_active (w)))
2529 return; 3861 return;
2530 3862
2531 EV_FREQUENT_CHECK; 3863 EV_FREQUENT_CHECK;
2532 3864
2533 ev_start (EV_A_ (W)w, 1); 3865 ev_start (EV_A_ (W)w, 1);
2534 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3866 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2535 3867
2536 EV_FREQUENT_CHECK; 3868 EV_FREQUENT_CHECK;
2537} 3869}
2538 3870
2539void 3871void
2540ev_child_stop (EV_P_ ev_child *w) 3872ev_child_stop (EV_P_ ev_child *w) EV_THROW
2541{ 3873{
2542 clear_pending (EV_A_ (W)w); 3874 clear_pending (EV_A_ (W)w);
2543 if (expect_false (!ev_is_active (w))) 3875 if (expect_false (!ev_is_active (w)))
2544 return; 3876 return;
2545 3877
2546 EV_FREQUENT_CHECK; 3878 EV_FREQUENT_CHECK;
2547 3879
2548 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3880 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2549 ev_stop (EV_A_ (W)w); 3881 ev_stop (EV_A_ (W)w);
2550 3882
2551 EV_FREQUENT_CHECK; 3883 EV_FREQUENT_CHECK;
2552} 3884}
3885
3886#endif
2553 3887
2554#if EV_STAT_ENABLE 3888#if EV_STAT_ENABLE
2555 3889
2556# ifdef _WIN32 3890# ifdef _WIN32
2557# undef lstat 3891# undef lstat
… …
2563#define MIN_STAT_INTERVAL 0.1074891 3897#define MIN_STAT_INTERVAL 0.1074891
2564 3898
2565static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3899static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2566 3900
2567#if EV_USE_INOTIFY 3901#if EV_USE_INOTIFY
2568# define EV_INOTIFY_BUFSIZE 8192 3902
3903/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3904# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2569 3905
2570static void noinline 3906static void noinline
2571infy_add (EV_P_ ev_stat *w) 3907infy_add (EV_P_ ev_stat *w)
2572{ 3908{
2573 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); 3909 w->wd = inotify_add_watch (fs_fd, w->path,
3910 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3911 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3912 | IN_DONT_FOLLOW | IN_MASK_ADD);
2574 3913
2575 if (w->wd < 0) 3914 if (w->wd >= 0)
3915 {
3916 struct statfs sfs;
3917
3918 /* now local changes will be tracked by inotify, but remote changes won't */
3919 /* unless the filesystem is known to be local, we therefore still poll */
3920 /* also do poll on <2.6.25, but with normal frequency */
3921
3922 if (!fs_2625)
3923 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3924 else if (!statfs (w->path, &sfs)
3925 && (sfs.f_type == 0x1373 /* devfs */
3926 || sfs.f_type == 0x4006 /* fat */
3927 || sfs.f_type == 0x4d44 /* msdos */
3928 || sfs.f_type == 0xEF53 /* ext2/3 */
3929 || sfs.f_type == 0x72b6 /* jffs2 */
3930 || sfs.f_type == 0x858458f6 /* ramfs */
3931 || sfs.f_type == 0x5346544e /* ntfs */
3932 || sfs.f_type == 0x3153464a /* jfs */
3933 || sfs.f_type == 0x9123683e /* btrfs */
3934 || sfs.f_type == 0x52654973 /* reiser3 */
3935 || sfs.f_type == 0x01021994 /* tmpfs */
3936 || sfs.f_type == 0x58465342 /* xfs */))
3937 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3938 else
3939 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2576 { 3940 }
3941 else
3942 {
3943 /* can't use inotify, continue to stat */
2577 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3944 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2578 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2579 3945
2580 /* monitor some parent directory for speedup hints */ 3946 /* if path is not there, monitor some parent directory for speedup hints */
2581 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3947 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2582 /* but an efficiency issue only */ 3948 /* but an efficiency issue only */
2583 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3949 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2584 { 3950 {
2585 char path [4096]; 3951 char path [4096];
… …
2595 if (!pend || pend == path) 3961 if (!pend || pend == path)
2596 break; 3962 break;
2597 3963
2598 *pend = 0; 3964 *pend = 0;
2599 w->wd = inotify_add_watch (fs_fd, path, mask); 3965 w->wd = inotify_add_watch (fs_fd, path, mask);
2600 } 3966 }
2601 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3967 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2602 } 3968 }
2603 } 3969 }
2604 3970
2605 if (w->wd >= 0) 3971 if (w->wd >= 0)
2606 {
2607 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3972 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2608 3973
2609 /* now local changes will be tracked by inotify, but remote changes won't */ 3974 /* now re-arm timer, if required */
2610 /* unless the filesystem it known to be local, we therefore still poll */ 3975 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2611 /* also do poll on <2.6.25, but with normal frequency */
2612 struct statfs sfs;
2613
2614 if (fs_2625 && !statfs (w->path, &sfs))
2615 if (sfs.f_type == 0x1373 /* devfs */
2616 || sfs.f_type == 0xEF53 /* ext2/3 */
2617 || sfs.f_type == 0x3153464a /* jfs */
2618 || sfs.f_type == 0x52654973 /* reiser3 */
2619 || sfs.f_type == 0x01021994 /* tempfs */
2620 || sfs.f_type == 0x58465342 /* xfs */)
2621 return;
2622
2623 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2624 ev_timer_again (EV_A_ &w->timer); 3976 ev_timer_again (EV_A_ &w->timer);
2625 } 3977 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2626} 3978}
2627 3979
2628static void noinline 3980static void noinline
2629infy_del (EV_P_ ev_stat *w) 3981infy_del (EV_P_ ev_stat *w)
2630{ 3982{
… …
2633 3985
2634 if (wd < 0) 3986 if (wd < 0)
2635 return; 3987 return;
2636 3988
2637 w->wd = -2; 3989 w->wd = -2;
2638 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3990 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2639 wlist_del (&fs_hash [slot].head, (WL)w); 3991 wlist_del (&fs_hash [slot].head, (WL)w);
2640 3992
2641 /* remove this watcher, if others are watching it, they will rearm */ 3993 /* remove this watcher, if others are watching it, they will rearm */
2642 inotify_rm_watch (fs_fd, wd); 3994 inotify_rm_watch (fs_fd, wd);
2643} 3995}
… …
2645static void noinline 3997static void noinline
2646infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3998infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2647{ 3999{
2648 if (slot < 0) 4000 if (slot < 0)
2649 /* overflow, need to check for all hash slots */ 4001 /* overflow, need to check for all hash slots */
2650 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4002 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2651 infy_wd (EV_A_ slot, wd, ev); 4003 infy_wd (EV_A_ slot, wd, ev);
2652 else 4004 else
2653 { 4005 {
2654 WL w_; 4006 WL w_;
2655 4007
2656 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 4008 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2657 { 4009 {
2658 ev_stat *w = (ev_stat *)w_; 4010 ev_stat *w = (ev_stat *)w_;
2659 w_ = w_->next; /* lets us remove this watcher and all before it */ 4011 w_ = w_->next; /* lets us remove this watcher and all before it */
2660 4012
2661 if (w->wd == wd || wd == -1) 4013 if (w->wd == wd || wd == -1)
2662 { 4014 {
2663 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 4015 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2664 { 4016 {
2665 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 4017 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2666 w->wd = -1; 4018 w->wd = -1;
2667 infy_add (EV_A_ w); /* re-add, no matter what */ 4019 infy_add (EV_A_ w); /* re-add, no matter what */
2668 } 4020 }
2669 4021
2670 stat_timer_cb (EV_A_ &w->timer, 0); 4022 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2675 4027
2676static void 4028static void
2677infy_cb (EV_P_ ev_io *w, int revents) 4029infy_cb (EV_P_ ev_io *w, int revents)
2678{ 4030{
2679 char buf [EV_INOTIFY_BUFSIZE]; 4031 char buf [EV_INOTIFY_BUFSIZE];
2680 struct inotify_event *ev = (struct inotify_event *)buf;
2681 int ofs; 4032 int ofs;
2682 int len = read (fs_fd, buf, sizeof (buf)); 4033 int len = read (fs_fd, buf, sizeof (buf));
2683 4034
2684 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 4035 for (ofs = 0; ofs < len; )
4036 {
4037 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2685 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4038 infy_wd (EV_A_ ev->wd, ev->wd, ev);
4039 ofs += sizeof (struct inotify_event) + ev->len;
4040 }
2686} 4041}
2687 4042
2688inline_size void 4043inline_size void ecb_cold
2689check_2625 (EV_P) 4044ev_check_2625 (EV_P)
2690{ 4045{
2691 /* kernels < 2.6.25 are borked 4046 /* kernels < 2.6.25 are borked
2692 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4047 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2693 */ 4048 */
2694 struct utsname buf; 4049 if (ev_linux_version () < 0x020619)
2695 int major, minor, micro;
2696
2697 if (uname (&buf))
2698 return; 4050 return;
2699 4051
2700 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2701 return;
2702
2703 if (major < 2
2704 || (major == 2 && minor < 6)
2705 || (major == 2 && minor == 6 && micro < 25))
2706 return;
2707
2708 fs_2625 = 1; 4052 fs_2625 = 1;
4053}
4054
4055inline_size int
4056infy_newfd (void)
4057{
4058#if defined IN_CLOEXEC && defined IN_NONBLOCK
4059 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
4060 if (fd >= 0)
4061 return fd;
4062#endif
4063 return inotify_init ();
2709} 4064}
2710 4065
2711inline_size void 4066inline_size void
2712infy_init (EV_P) 4067infy_init (EV_P)
2713{ 4068{
2714 if (fs_fd != -2) 4069 if (fs_fd != -2)
2715 return; 4070 return;
2716 4071
2717 fs_fd = -1; 4072 fs_fd = -1;
2718 4073
2719 check_2625 (EV_A); 4074 ev_check_2625 (EV_A);
2720 4075
2721 fs_fd = inotify_init (); 4076 fs_fd = infy_newfd ();
2722 4077
2723 if (fs_fd >= 0) 4078 if (fs_fd >= 0)
2724 { 4079 {
4080 fd_intern (fs_fd);
2725 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 4081 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2726 ev_set_priority (&fs_w, EV_MAXPRI); 4082 ev_set_priority (&fs_w, EV_MAXPRI);
2727 ev_io_start (EV_A_ &fs_w); 4083 ev_io_start (EV_A_ &fs_w);
4084 ev_unref (EV_A);
2728 } 4085 }
2729} 4086}
2730 4087
2731inline_size void 4088inline_size void
2732infy_fork (EV_P) 4089infy_fork (EV_P)
… …
2734 int slot; 4091 int slot;
2735 4092
2736 if (fs_fd < 0) 4093 if (fs_fd < 0)
2737 return; 4094 return;
2738 4095
4096 ev_ref (EV_A);
4097 ev_io_stop (EV_A_ &fs_w);
2739 close (fs_fd); 4098 close (fs_fd);
2740 fs_fd = inotify_init (); 4099 fs_fd = infy_newfd ();
2741 4100
4101 if (fs_fd >= 0)
4102 {
4103 fd_intern (fs_fd);
4104 ev_io_set (&fs_w, fs_fd, EV_READ);
4105 ev_io_start (EV_A_ &fs_w);
4106 ev_unref (EV_A);
4107 }
4108
2742 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 4109 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2743 { 4110 {
2744 WL w_ = fs_hash [slot].head; 4111 WL w_ = fs_hash [slot].head;
2745 fs_hash [slot].head = 0; 4112 fs_hash [slot].head = 0;
2746 4113
2747 while (w_) 4114 while (w_)
… …
2752 w->wd = -1; 4119 w->wd = -1;
2753 4120
2754 if (fs_fd >= 0) 4121 if (fs_fd >= 0)
2755 infy_add (EV_A_ w); /* re-add, no matter what */ 4122 infy_add (EV_A_ w); /* re-add, no matter what */
2756 else 4123 else
4124 {
4125 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
4126 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2757 ev_timer_again (EV_A_ &w->timer); 4127 ev_timer_again (EV_A_ &w->timer);
4128 if (ev_is_active (&w->timer)) ev_unref (EV_A);
4129 }
2758 } 4130 }
2759 } 4131 }
2760} 4132}
2761 4133
2762#endif 4134#endif
… …
2766#else 4138#else
2767# define EV_LSTAT(p,b) lstat (p, b) 4139# define EV_LSTAT(p,b) lstat (p, b)
2768#endif 4140#endif
2769 4141
2770void 4142void
2771ev_stat_stat (EV_P_ ev_stat *w) 4143ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2772{ 4144{
2773 if (lstat (w->path, &w->attr) < 0) 4145 if (lstat (w->path, &w->attr) < 0)
2774 w->attr.st_nlink = 0; 4146 w->attr.st_nlink = 0;
2775 else if (!w->attr.st_nlink) 4147 else if (!w->attr.st_nlink)
2776 w->attr.st_nlink = 1; 4148 w->attr.st_nlink = 1;
… …
2779static void noinline 4151static void noinline
2780stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4152stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2781{ 4153{
2782 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4154 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2783 4155
2784 /* we copy this here each the time so that */ 4156 ev_statdata prev = w->attr;
2785 /* prev has the old value when the callback gets invoked */
2786 w->prev = w->attr;
2787 ev_stat_stat (EV_A_ w); 4157 ev_stat_stat (EV_A_ w);
2788 4158
2789 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 4159 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2790 if ( 4160 if (
2791 w->prev.st_dev != w->attr.st_dev 4161 prev.st_dev != w->attr.st_dev
2792 || w->prev.st_ino != w->attr.st_ino 4162 || prev.st_ino != w->attr.st_ino
2793 || w->prev.st_mode != w->attr.st_mode 4163 || prev.st_mode != w->attr.st_mode
2794 || w->prev.st_nlink != w->attr.st_nlink 4164 || prev.st_nlink != w->attr.st_nlink
2795 || w->prev.st_uid != w->attr.st_uid 4165 || prev.st_uid != w->attr.st_uid
2796 || w->prev.st_gid != w->attr.st_gid 4166 || prev.st_gid != w->attr.st_gid
2797 || w->prev.st_rdev != w->attr.st_rdev 4167 || prev.st_rdev != w->attr.st_rdev
2798 || w->prev.st_size != w->attr.st_size 4168 || prev.st_size != w->attr.st_size
2799 || w->prev.st_atime != w->attr.st_atime 4169 || prev.st_atime != w->attr.st_atime
2800 || w->prev.st_mtime != w->attr.st_mtime 4170 || prev.st_mtime != w->attr.st_mtime
2801 || w->prev.st_ctime != w->attr.st_ctime 4171 || prev.st_ctime != w->attr.st_ctime
2802 ) { 4172 ) {
4173 /* we only update w->prev on actual differences */
4174 /* in case we test more often than invoke the callback, */
4175 /* to ensure that prev is always different to attr */
4176 w->prev = prev;
4177
2803 #if EV_USE_INOTIFY 4178 #if EV_USE_INOTIFY
2804 if (fs_fd >= 0) 4179 if (fs_fd >= 0)
2805 { 4180 {
2806 infy_del (EV_A_ w); 4181 infy_del (EV_A_ w);
2807 infy_add (EV_A_ w); 4182 infy_add (EV_A_ w);
… …
2812 ev_feed_event (EV_A_ w, EV_STAT); 4187 ev_feed_event (EV_A_ w, EV_STAT);
2813 } 4188 }
2814} 4189}
2815 4190
2816void 4191void
2817ev_stat_start (EV_P_ ev_stat *w) 4192ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2818{ 4193{
2819 if (expect_false (ev_is_active (w))) 4194 if (expect_false (ev_is_active (w)))
2820 return; 4195 return;
2821 4196
2822 ev_stat_stat (EV_A_ w); 4197 ev_stat_stat (EV_A_ w);
… …
2832 4207
2833 if (fs_fd >= 0) 4208 if (fs_fd >= 0)
2834 infy_add (EV_A_ w); 4209 infy_add (EV_A_ w);
2835 else 4210 else
2836#endif 4211#endif
4212 {
2837 ev_timer_again (EV_A_ &w->timer); 4213 ev_timer_again (EV_A_ &w->timer);
4214 ev_unref (EV_A);
4215 }
2838 4216
2839 ev_start (EV_A_ (W)w, 1); 4217 ev_start (EV_A_ (W)w, 1);
2840 4218
2841 EV_FREQUENT_CHECK; 4219 EV_FREQUENT_CHECK;
2842} 4220}
2843 4221
2844void 4222void
2845ev_stat_stop (EV_P_ ev_stat *w) 4223ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2846{ 4224{
2847 clear_pending (EV_A_ (W)w); 4225 clear_pending (EV_A_ (W)w);
2848 if (expect_false (!ev_is_active (w))) 4226 if (expect_false (!ev_is_active (w)))
2849 return; 4227 return;
2850 4228
2851 EV_FREQUENT_CHECK; 4229 EV_FREQUENT_CHECK;
2852 4230
2853#if EV_USE_INOTIFY 4231#if EV_USE_INOTIFY
2854 infy_del (EV_A_ w); 4232 infy_del (EV_A_ w);
2855#endif 4233#endif
4234
4235 if (ev_is_active (&w->timer))
4236 {
4237 ev_ref (EV_A);
2856 ev_timer_stop (EV_A_ &w->timer); 4238 ev_timer_stop (EV_A_ &w->timer);
4239 }
2857 4240
2858 ev_stop (EV_A_ (W)w); 4241 ev_stop (EV_A_ (W)w);
2859 4242
2860 EV_FREQUENT_CHECK; 4243 EV_FREQUENT_CHECK;
2861} 4244}
2862#endif 4245#endif
2863 4246
2864#if EV_IDLE_ENABLE 4247#if EV_IDLE_ENABLE
2865void 4248void
2866ev_idle_start (EV_P_ ev_idle *w) 4249ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2867{ 4250{
2868 if (expect_false (ev_is_active (w))) 4251 if (expect_false (ev_is_active (w)))
2869 return; 4252 return;
2870 4253
2871 pri_adjust (EV_A_ (W)w); 4254 pri_adjust (EV_A_ (W)w);
… …
2884 4267
2885 EV_FREQUENT_CHECK; 4268 EV_FREQUENT_CHECK;
2886} 4269}
2887 4270
2888void 4271void
2889ev_idle_stop (EV_P_ ev_idle *w) 4272ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2890{ 4273{
2891 clear_pending (EV_A_ (W)w); 4274 clear_pending (EV_A_ (W)w);
2892 if (expect_false (!ev_is_active (w))) 4275 if (expect_false (!ev_is_active (w)))
2893 return; 4276 return;
2894 4277
… …
2906 4289
2907 EV_FREQUENT_CHECK; 4290 EV_FREQUENT_CHECK;
2908} 4291}
2909#endif 4292#endif
2910 4293
4294#if EV_PREPARE_ENABLE
2911void 4295void
2912ev_prepare_start (EV_P_ ev_prepare *w) 4296ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2913{ 4297{
2914 if (expect_false (ev_is_active (w))) 4298 if (expect_false (ev_is_active (w)))
2915 return; 4299 return;
2916 4300
2917 EV_FREQUENT_CHECK; 4301 EV_FREQUENT_CHECK;
… …
2922 4306
2923 EV_FREQUENT_CHECK; 4307 EV_FREQUENT_CHECK;
2924} 4308}
2925 4309
2926void 4310void
2927ev_prepare_stop (EV_P_ ev_prepare *w) 4311ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2928{ 4312{
2929 clear_pending (EV_A_ (W)w); 4313 clear_pending (EV_A_ (W)w);
2930 if (expect_false (!ev_is_active (w))) 4314 if (expect_false (!ev_is_active (w)))
2931 return; 4315 return;
2932 4316
… …
2941 4325
2942 ev_stop (EV_A_ (W)w); 4326 ev_stop (EV_A_ (W)w);
2943 4327
2944 EV_FREQUENT_CHECK; 4328 EV_FREQUENT_CHECK;
2945} 4329}
4330#endif
2946 4331
4332#if EV_CHECK_ENABLE
2947void 4333void
2948ev_check_start (EV_P_ ev_check *w) 4334ev_check_start (EV_P_ ev_check *w) EV_THROW
2949{ 4335{
2950 if (expect_false (ev_is_active (w))) 4336 if (expect_false (ev_is_active (w)))
2951 return; 4337 return;
2952 4338
2953 EV_FREQUENT_CHECK; 4339 EV_FREQUENT_CHECK;
… …
2958 4344
2959 EV_FREQUENT_CHECK; 4345 EV_FREQUENT_CHECK;
2960} 4346}
2961 4347
2962void 4348void
2963ev_check_stop (EV_P_ ev_check *w) 4349ev_check_stop (EV_P_ ev_check *w) EV_THROW
2964{ 4350{
2965 clear_pending (EV_A_ (W)w); 4351 clear_pending (EV_A_ (W)w);
2966 if (expect_false (!ev_is_active (w))) 4352 if (expect_false (!ev_is_active (w)))
2967 return; 4353 return;
2968 4354
… …
2977 4363
2978 ev_stop (EV_A_ (W)w); 4364 ev_stop (EV_A_ (W)w);
2979 4365
2980 EV_FREQUENT_CHECK; 4366 EV_FREQUENT_CHECK;
2981} 4367}
4368#endif
2982 4369
2983#if EV_EMBED_ENABLE 4370#if EV_EMBED_ENABLE
2984void noinline 4371void noinline
2985ev_embed_sweep (EV_P_ ev_embed *w) 4372ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2986{ 4373{
2987 ev_loop (w->other, EVLOOP_NONBLOCK); 4374 ev_run (w->other, EVRUN_NOWAIT);
2988} 4375}
2989 4376
2990static void 4377static void
2991embed_io_cb (EV_P_ ev_io *io, int revents) 4378embed_io_cb (EV_P_ ev_io *io, int revents)
2992{ 4379{
2993 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4380 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2994 4381
2995 if (ev_cb (w)) 4382 if (ev_cb (w))
2996 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4383 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2997 else 4384 else
2998 ev_loop (w->other, EVLOOP_NONBLOCK); 4385 ev_run (w->other, EVRUN_NOWAIT);
2999} 4386}
3000 4387
3001static void 4388static void
3002embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4389embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3003{ 4390{
3004 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4391 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3005 4392
3006 { 4393 {
3007 struct ev_loop *loop = w->other; 4394 EV_P = w->other;
3008 4395
3009 while (fdchangecnt) 4396 while (fdchangecnt)
3010 { 4397 {
3011 fd_reify (EV_A); 4398 fd_reify (EV_A);
3012 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4399 ev_run (EV_A_ EVRUN_NOWAIT);
3013 } 4400 }
3014 } 4401 }
3015} 4402}
3016 4403
3017static void 4404static void
… …
3020 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4407 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3021 4408
3022 ev_embed_stop (EV_A_ w); 4409 ev_embed_stop (EV_A_ w);
3023 4410
3024 { 4411 {
3025 struct ev_loop *loop = w->other; 4412 EV_P = w->other;
3026 4413
3027 ev_loop_fork (EV_A); 4414 ev_loop_fork (EV_A);
3028 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4415 ev_run (EV_A_ EVRUN_NOWAIT);
3029 } 4416 }
3030 4417
3031 ev_embed_start (EV_A_ w); 4418 ev_embed_start (EV_A_ w);
3032} 4419}
3033 4420
… …
3038 ev_idle_stop (EV_A_ idle); 4425 ev_idle_stop (EV_A_ idle);
3039} 4426}
3040#endif 4427#endif
3041 4428
3042void 4429void
3043ev_embed_start (EV_P_ ev_embed *w) 4430ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3044{ 4431{
3045 if (expect_false (ev_is_active (w))) 4432 if (expect_false (ev_is_active (w)))
3046 return; 4433 return;
3047 4434
3048 { 4435 {
3049 struct ev_loop *loop = w->other; 4436 EV_P = w->other;
3050 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4437 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3051 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4438 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3052 } 4439 }
3053 4440
3054 EV_FREQUENT_CHECK; 4441 EV_FREQUENT_CHECK;
… …
3069 4456
3070 EV_FREQUENT_CHECK; 4457 EV_FREQUENT_CHECK;
3071} 4458}
3072 4459
3073void 4460void
3074ev_embed_stop (EV_P_ ev_embed *w) 4461ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3075{ 4462{
3076 clear_pending (EV_A_ (W)w); 4463 clear_pending (EV_A_ (W)w);
3077 if (expect_false (!ev_is_active (w))) 4464 if (expect_false (!ev_is_active (w)))
3078 return; 4465 return;
3079 4466
… …
3081 4468
3082 ev_io_stop (EV_A_ &w->io); 4469 ev_io_stop (EV_A_ &w->io);
3083 ev_prepare_stop (EV_A_ &w->prepare); 4470 ev_prepare_stop (EV_A_ &w->prepare);
3084 ev_fork_stop (EV_A_ &w->fork); 4471 ev_fork_stop (EV_A_ &w->fork);
3085 4472
4473 ev_stop (EV_A_ (W)w);
4474
3086 EV_FREQUENT_CHECK; 4475 EV_FREQUENT_CHECK;
3087} 4476}
3088#endif 4477#endif
3089 4478
3090#if EV_FORK_ENABLE 4479#if EV_FORK_ENABLE
3091void 4480void
3092ev_fork_start (EV_P_ ev_fork *w) 4481ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3093{ 4482{
3094 if (expect_false (ev_is_active (w))) 4483 if (expect_false (ev_is_active (w)))
3095 return; 4484 return;
3096 4485
3097 EV_FREQUENT_CHECK; 4486 EV_FREQUENT_CHECK;
… …
3102 4491
3103 EV_FREQUENT_CHECK; 4492 EV_FREQUENT_CHECK;
3104} 4493}
3105 4494
3106void 4495void
3107ev_fork_stop (EV_P_ ev_fork *w) 4496ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3108{ 4497{
3109 clear_pending (EV_A_ (W)w); 4498 clear_pending (EV_A_ (W)w);
3110 if (expect_false (!ev_is_active (w))) 4499 if (expect_false (!ev_is_active (w)))
3111 return; 4500 return;
3112 4501
… …
3123 4512
3124 EV_FREQUENT_CHECK; 4513 EV_FREQUENT_CHECK;
3125} 4514}
3126#endif 4515#endif
3127 4516
4517#if EV_CLEANUP_ENABLE
4518void
4519ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4520{
4521 if (expect_false (ev_is_active (w)))
4522 return;
4523
4524 EV_FREQUENT_CHECK;
4525
4526 ev_start (EV_A_ (W)w, ++cleanupcnt);
4527 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4528 cleanups [cleanupcnt - 1] = w;
4529
4530 /* cleanup watchers should never keep a refcount on the loop */
4531 ev_unref (EV_A);
4532 EV_FREQUENT_CHECK;
4533}
4534
4535void
4536ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4537{
4538 clear_pending (EV_A_ (W)w);
4539 if (expect_false (!ev_is_active (w)))
4540 return;
4541
4542 EV_FREQUENT_CHECK;
4543 ev_ref (EV_A);
4544
4545 {
4546 int active = ev_active (w);
4547
4548 cleanups [active - 1] = cleanups [--cleanupcnt];
4549 ev_active (cleanups [active - 1]) = active;
4550 }
4551
4552 ev_stop (EV_A_ (W)w);
4553
4554 EV_FREQUENT_CHECK;
4555}
4556#endif
4557
3128#if EV_ASYNC_ENABLE 4558#if EV_ASYNC_ENABLE
3129void 4559void
3130ev_async_start (EV_P_ ev_async *w) 4560ev_async_start (EV_P_ ev_async *w) EV_THROW
3131{ 4561{
3132 if (expect_false (ev_is_active (w))) 4562 if (expect_false (ev_is_active (w)))
3133 return; 4563 return;
4564
4565 w->sent = 0;
3134 4566
3135 evpipe_init (EV_A); 4567 evpipe_init (EV_A);
3136 4568
3137 EV_FREQUENT_CHECK; 4569 EV_FREQUENT_CHECK;
3138 4570
… …
3142 4574
3143 EV_FREQUENT_CHECK; 4575 EV_FREQUENT_CHECK;
3144} 4576}
3145 4577
3146void 4578void
3147ev_async_stop (EV_P_ ev_async *w) 4579ev_async_stop (EV_P_ ev_async *w) EV_THROW
3148{ 4580{
3149 clear_pending (EV_A_ (W)w); 4581 clear_pending (EV_A_ (W)w);
3150 if (expect_false (!ev_is_active (w))) 4582 if (expect_false (!ev_is_active (w)))
3151 return; 4583 return;
3152 4584
… …
3163 4595
3164 EV_FREQUENT_CHECK; 4596 EV_FREQUENT_CHECK;
3165} 4597}
3166 4598
3167void 4599void
3168ev_async_send (EV_P_ ev_async *w) 4600ev_async_send (EV_P_ ev_async *w) EV_THROW
3169{ 4601{
3170 w->sent = 1; 4602 w->sent = 1;
3171 evpipe_write (EV_A_ &gotasync); 4603 evpipe_write (EV_A_ &async_pending);
3172} 4604}
3173#endif 4605#endif
3174 4606
3175/*****************************************************************************/ 4607/*****************************************************************************/
3176 4608
… …
3210 4642
3211 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4643 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3212} 4644}
3213 4645
3214void 4646void
3215ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4647ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3216{ 4648{
3217 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4649 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3218 4650
3219 if (expect_false (!once)) 4651 if (expect_false (!once))
3220 { 4652 {
3221 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4653 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3222 return; 4654 return;
3223 } 4655 }
3224 4656
3225 once->cb = cb; 4657 once->cb = cb;
3226 once->arg = arg; 4658 once->arg = arg;
… …
3241} 4673}
3242 4674
3243/*****************************************************************************/ 4675/*****************************************************************************/
3244 4676
3245#if EV_WALK_ENABLE 4677#if EV_WALK_ENABLE
3246void 4678void ecb_cold
3247ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4679ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3248{ 4680{
3249 int i, j; 4681 int i, j;
3250 ev_watcher_list *wl, *wn; 4682 ev_watcher_list *wl, *wn;
3251 4683
3252 if (types & (EV_IO | EV_EMBED)) 4684 if (types & (EV_IO | EV_EMBED))
… …
3295 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4727 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3296#endif 4728#endif
3297 4729
3298#if EV_IDLE_ENABLE 4730#if EV_IDLE_ENABLE
3299 if (types & EV_IDLE) 4731 if (types & EV_IDLE)
3300 for (j = NUMPRI; i--; ) 4732 for (j = NUMPRI; j--; )
3301 for (i = idlecnt [j]; i--; ) 4733 for (i = idlecnt [j]; i--; )
3302 cb (EV_A_ EV_IDLE, idles [j][i]); 4734 cb (EV_A_ EV_IDLE, idles [j][i]);
3303#endif 4735#endif
3304 4736
3305#if EV_FORK_ENABLE 4737#if EV_FORK_ENABLE
… …
3313 if (types & EV_ASYNC) 4745 if (types & EV_ASYNC)
3314 for (i = asynccnt; i--; ) 4746 for (i = asynccnt; i--; )
3315 cb (EV_A_ EV_ASYNC, asyncs [i]); 4747 cb (EV_A_ EV_ASYNC, asyncs [i]);
3316#endif 4748#endif
3317 4749
4750#if EV_PREPARE_ENABLE
3318 if (types & EV_PREPARE) 4751 if (types & EV_PREPARE)
3319 for (i = preparecnt; i--; ) 4752 for (i = preparecnt; i--; )
3320#if EV_EMBED_ENABLE 4753# if EV_EMBED_ENABLE
3321 if (ev_cb (prepares [i]) != embed_prepare_cb) 4754 if (ev_cb (prepares [i]) != embed_prepare_cb)
3322#endif 4755# endif
3323 cb (EV_A_ EV_PREPARE, prepares [i]); 4756 cb (EV_A_ EV_PREPARE, prepares [i]);
4757#endif
3324 4758
4759#if EV_CHECK_ENABLE
3325 if (types & EV_CHECK) 4760 if (types & EV_CHECK)
3326 for (i = checkcnt; i--; ) 4761 for (i = checkcnt; i--; )
3327 cb (EV_A_ EV_CHECK, checks [i]); 4762 cb (EV_A_ EV_CHECK, checks [i]);
4763#endif
3328 4764
4765#if EV_SIGNAL_ENABLE
3329 if (types & EV_SIGNAL) 4766 if (types & EV_SIGNAL)
3330 for (i = 0; i < signalmax; ++i) 4767 for (i = 0; i < EV_NSIG - 1; ++i)
3331 for (wl = signals [i].head; wl; ) 4768 for (wl = signals [i].head; wl; )
3332 { 4769 {
3333 wn = wl->next; 4770 wn = wl->next;
3334 cb (EV_A_ EV_SIGNAL, wl); 4771 cb (EV_A_ EV_SIGNAL, wl);
3335 wl = wn; 4772 wl = wn;
3336 } 4773 }
4774#endif
3337 4775
4776#if EV_CHILD_ENABLE
3338 if (types & EV_CHILD) 4777 if (types & EV_CHILD)
3339 for (i = EV_PID_HASHSIZE; i--; ) 4778 for (i = (EV_PID_HASHSIZE); i--; )
3340 for (wl = childs [i]; wl; ) 4779 for (wl = childs [i]; wl; )
3341 { 4780 {
3342 wn = wl->next; 4781 wn = wl->next;
3343 cb (EV_A_ EV_CHILD, wl); 4782 cb (EV_A_ EV_CHILD, wl);
3344 wl = wn; 4783 wl = wn;
3345 } 4784 }
4785#endif
3346/* EV_STAT 0x00001000 /* stat data changed */ 4786/* EV_STAT 0x00001000 /* stat data changed */
3347/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4787/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3348} 4788}
3349#endif 4789#endif
3350 4790
3351#if EV_MULTIPLICITY 4791#if EV_MULTIPLICITY
3352 #include "ev_wrap.h" 4792 #include "ev_wrap.h"
3353#endif 4793#endif
3354 4794
3355#ifdef __cplusplus
3356}
3357#endif
3358

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