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Comparing libev/ev.c (file contents):
Revision 1.278 by root, Tue Jan 6 19:46:56 2009 UTC vs.
Revision 1.435 by root, Sat May 26 08:52:09 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
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
67# endif 71# endif
68# ifndef EV_USE_REALTIME 72# ifndef EV_USE_REALTIME
69# define EV_USE_REALTIME 1 73# define EV_USE_REALTIME 0
70# endif 74# endif
71# else 75# else
72# ifndef EV_USE_MONOTONIC 76# ifndef EV_USE_MONOTONIC
73# define EV_USE_MONOTONIC 0 77# define EV_USE_MONOTONIC 0
74# endif 78# endif
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
197#ifndef EV_USE_REALTIME 272#ifndef EV_USE_REALTIME
198# define EV_USE_REALTIME 0 273# 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/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
363/* which makes programs even slower. might work on other unices, too. */
364#if EV_USE_CLOCK_SYSCALL
365# include <sys/syscall.h>
366# ifdef SYS_clock_gettime
367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
368# undef EV_USE_MONOTONIC
369# define EV_USE_MONOTONIC 1
370# else
371# undef EV_USE_CLOCK_SYSCALL
372# define EV_USE_CLOCK_SYSCALL 0
373# endif
285#endif 374#endif
286 375
287/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 376/* this block fixes any misconfiguration where we know we run into trouble otherwise */
377
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
288 383
289#ifndef CLOCK_MONOTONIC 384#ifndef CLOCK_MONOTONIC
290# undef EV_USE_MONOTONIC 385# undef EV_USE_MONOTONIC
291# define EV_USE_MONOTONIC 0 386# define EV_USE_MONOTONIC 0
292#endif 387#endif
… …
300# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
301# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
302#endif 397#endif
303 398
304#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
305# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
306# include <sys/select.h> 402# include <sys/select.h>
307# endif 403# endif
308#endif 404#endif
309 405
310#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h> 407# include <sys/statfs.h>
313# include <sys/inotify.h> 408# include <sys/inotify.h>
314/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 409/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
315# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
318# endif 413# endif
319#endif 414#endif
320 415
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 416#if EV_USE_EVENTFD
335/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 417/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336# include <stdint.h> 418# include <stdint.h>
337# ifdef __cplusplus 419# ifndef EFD_NONBLOCK
338extern "C" { 420# define EFD_NONBLOCK O_NONBLOCK
339# endif 421# endif
340int eventfd (unsigned int initval, int flags); 422# ifndef EFD_CLOEXEC
341# ifdef __cplusplus 423# ifdef O_CLOEXEC
342} 424# define EFD_CLOEXEC O_CLOEXEC
425# else
426# define EFD_CLOEXEC 02000000
427# endif
343# endif 428# endif
429EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
430#endif
431
432#if EV_USE_SIGNALFD
433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
434# include <stdint.h>
435# ifndef SFD_NONBLOCK
436# define SFD_NONBLOCK O_NONBLOCK
437# endif
438# ifndef SFD_CLOEXEC
439# ifdef O_CLOEXEC
440# define SFD_CLOEXEC O_CLOEXEC
441# else
442# define SFD_CLOEXEC 02000000
443# endif
444# endif
445EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
446
447struct signalfd_siginfo
448{
449 uint32_t ssi_signo;
450 char pad[128 - sizeof (uint32_t)];
451};
344#endif 452#endif
345 453
346/**/ 454/**/
347 455
348#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 458#else
351# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
352#endif 460#endif
353 461
354/* 462/*
355 * This is used to avoid floating point rounding problems. 463 * 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. 464 * This value is good at least till the year 4000.
360 * Better solutions welcome.
361 */ 465 */
362#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 466#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
467/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
363 468
364#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 469#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
365#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 470#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
366/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
367 471
472#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
473#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
474
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */
477/*
478 * libecb - http://software.schmorp.de/pkg/libecb
479 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved.
483 *
484 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met:
486 *
487 * 1. Redistributions of source code must retain the above copyright notice,
488 * this list of conditions and the following disclaimer.
489 *
490 * 2. Redistributions in binary form must reproduce the above copyright
491 * notice, this list of conditions and the following disclaimer in the
492 * documentation and/or other materials provided with the distribution.
493 *
494 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
495 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
496 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
497 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
498 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE.
504 */
505
506#ifndef ECB_H
507#define ECB_H
508
509#ifdef _WIN32
510 typedef signed char int8_t;
511 typedef unsigned char uint8_t;
512 typedef signed short int16_t;
513 typedef unsigned short uint16_t;
514 typedef signed int int32_t;
515 typedef unsigned int uint32_t;
368#if __GNUC__ >= 4 516 #if __GNUC__
369# define expect(expr,value) __builtin_expect ((expr),(value)) 517 typedef signed long long int64_t;
370# define noinline __attribute__ ((noinline)) 518 typedef unsigned long long uint64_t;
519 #else /* _MSC_VER || __BORLANDC__ */
520 typedef signed __int64 int64_t;
521 typedef unsigned __int64 uint64_t;
522 #endif
371#else 523#else
372# define expect(expr,value) (expr) 524 #include <inttypes.h>
373# define noinline
374# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
375# define inline
376# endif 525#endif
526
527/* many compilers define _GNUC_ to some versions but then only implement
528 * what their idiot authors think are the "more important" extensions,
529 * causing enormous grief in return for some better fake benchmark numbers.
530 * or so.
531 * we try to detect these and simply assume they are not gcc - if they have
532 * an issue with that they should have done it right in the first place.
533 */
534#ifndef ECB_GCC_VERSION
535 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
536 #define ECB_GCC_VERSION(major,minor) 0
537 #else
538 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
377#endif 539 #endif
540#endif
378 541
542/*****************************************************************************/
543
544/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
545/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
546
547#if ECB_NO_THREADS
548# define ECB_NO_SMP 1
549#endif
550
551#if ECB_NO_THREADS || ECB_NO_SMP
552 #define ECB_MEMORY_FENCE do { } while (0)
553#endif
554
555#ifndef ECB_MEMORY_FENCE
556 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
557 #if __i386 || __i386__
558 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
559 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
560 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
561 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
565 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
566 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
567 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
568 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
570 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
571 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
573 #elif __sparc || __sparc__
574 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
575 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
576 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
577 #elif defined __s390__ || defined __s390x__
578 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
579 #elif defined __mips__
580 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
581 #elif defined __alpha__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
583 #endif
584 #endif
585#endif
586
587#ifndef ECB_MEMORY_FENCE
588 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
589 #define ECB_MEMORY_FENCE __sync_synchronize ()
590 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
591 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
592 #elif _MSC_VER >= 1400 /* VC++ 2005 */
593 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
594 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
595 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
596 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
597 #elif defined _WIN32
598 #include <WinNT.h>
599 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
600 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
601 #include <mbarrier.h>
602 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
603 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
604 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
605 #elif __xlC__
606 #define ECB_MEMORY_FENCE __sync ()
607 #endif
608#endif
609
610#ifndef ECB_MEMORY_FENCE
611 #if !ECB_AVOID_PTHREADS
612 /*
613 * if you get undefined symbol references to pthread_mutex_lock,
614 * or failure to find pthread.h, then you should implement
615 * the ECB_MEMORY_FENCE operations for your cpu/compiler
616 * OR provide pthread.h and link against the posix thread library
617 * of your system.
618 */
619 #include <pthread.h>
620 #define ECB_NEEDS_PTHREADS 1
621 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
622
623 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
624 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
625 #endif
626#endif
627
628#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
629 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
630#endif
631
632#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
633 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
634#endif
635
636/*****************************************************************************/
637
638#define ECB_C99 (__STDC_VERSION__ >= 199901L)
639
640#if __cplusplus
641 #define ecb_inline static inline
642#elif ECB_GCC_VERSION(2,5)
643 #define ecb_inline static __inline__
644#elif ECB_C99
645 #define ecb_inline static inline
646#else
647 #define ecb_inline static
648#endif
649
650#if ECB_GCC_VERSION(3,3)
651 #define ecb_restrict __restrict__
652#elif ECB_C99
653 #define ecb_restrict restrict
654#else
655 #define ecb_restrict
656#endif
657
658typedef int ecb_bool;
659
660#define ECB_CONCAT_(a, b) a ## b
661#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
662#define ECB_STRINGIFY_(a) # a
663#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
664
665#define ecb_function_ ecb_inline
666
667#if ECB_GCC_VERSION(3,1)
668 #define ecb_attribute(attrlist) __attribute__(attrlist)
669 #define ecb_is_constant(expr) __builtin_constant_p (expr)
670 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
671 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
672#else
673 #define ecb_attribute(attrlist)
674 #define ecb_is_constant(expr) 0
675 #define ecb_expect(expr,value) (expr)
676 #define ecb_prefetch(addr,rw,locality)
677#endif
678
679/* no emulation for ecb_decltype */
680#if ECB_GCC_VERSION(4,5)
681 #define ecb_decltype(x) __decltype(x)
682#elif ECB_GCC_VERSION(3,0)
683 #define ecb_decltype(x) __typeof(x)
684#endif
685
686#define ecb_noinline ecb_attribute ((__noinline__))
687#define ecb_noreturn ecb_attribute ((__noreturn__))
688#define ecb_unused ecb_attribute ((__unused__))
689#define ecb_const ecb_attribute ((__const__))
690#define ecb_pure ecb_attribute ((__pure__))
691
692#if ECB_GCC_VERSION(4,3)
693 #define ecb_artificial ecb_attribute ((__artificial__))
694 #define ecb_hot ecb_attribute ((__hot__))
695 #define ecb_cold ecb_attribute ((__cold__))
696#else
697 #define ecb_artificial
698 #define ecb_hot
699 #define ecb_cold
700#endif
701
702/* put around conditional expressions if you are very sure that the */
703/* expression is mostly true or mostly false. note that these return */
704/* booleans, not the expression. */
379#define expect_false(expr) expect ((expr) != 0, 0) 705#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 706#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
707/* for compatibility to the rest of the world */
708#define ecb_likely(expr) ecb_expect_true (expr)
709#define ecb_unlikely(expr) ecb_expect_false (expr)
710
711/* count trailing zero bits and count # of one bits */
712#if ECB_GCC_VERSION(3,4)
713 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
714 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
715 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
716 #define ecb_ctz32(x) __builtin_ctz (x)
717 #define ecb_ctz64(x) __builtin_ctzll (x)
718 #define ecb_popcount32(x) __builtin_popcount (x)
719 /* no popcountll */
720#else
721 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
722 ecb_function_ int
723 ecb_ctz32 (uint32_t x)
724 {
725 int r = 0;
726
727 x &= ~x + 1; /* this isolates the lowest bit */
728
729#if ECB_branchless_on_i386
730 r += !!(x & 0xaaaaaaaa) << 0;
731 r += !!(x & 0xcccccccc) << 1;
732 r += !!(x & 0xf0f0f0f0) << 2;
733 r += !!(x & 0xff00ff00) << 3;
734 r += !!(x & 0xffff0000) << 4;
735#else
736 if (x & 0xaaaaaaaa) r += 1;
737 if (x & 0xcccccccc) r += 2;
738 if (x & 0xf0f0f0f0) r += 4;
739 if (x & 0xff00ff00) r += 8;
740 if (x & 0xffff0000) r += 16;
741#endif
742
743 return r;
744 }
745
746 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
747 ecb_function_ int
748 ecb_ctz64 (uint64_t x)
749 {
750 int shift = x & 0xffffffffU ? 0 : 32;
751 return ecb_ctz32 (x >> shift) + shift;
752 }
753
754 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
755 ecb_function_ int
756 ecb_popcount32 (uint32_t x)
757 {
758 x -= (x >> 1) & 0x55555555;
759 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
760 x = ((x >> 4) + x) & 0x0f0f0f0f;
761 x *= 0x01010101;
762
763 return x >> 24;
764 }
765
766 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
767 ecb_function_ int ecb_ld32 (uint32_t x)
768 {
769 int r = 0;
770
771 if (x >> 16) { x >>= 16; r += 16; }
772 if (x >> 8) { x >>= 8; r += 8; }
773 if (x >> 4) { x >>= 4; r += 4; }
774 if (x >> 2) { x >>= 2; r += 2; }
775 if (x >> 1) { r += 1; }
776
777 return r;
778 }
779
780 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
781 ecb_function_ int ecb_ld64 (uint64_t x)
782 {
783 int r = 0;
784
785 if (x >> 32) { x >>= 32; r += 32; }
786
787 return r + ecb_ld32 (x);
788 }
789#endif
790
791ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
792ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
793{
794 return ( (x * 0x0802U & 0x22110U)
795 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
796}
797
798ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
799ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
800{
801 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
802 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
803 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
804 x = ( x >> 8 ) | ( x << 8);
805
806 return x;
807}
808
809ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
810ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
811{
812 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
813 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
814 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
815 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
816 x = ( x >> 16 ) | ( x << 16);
817
818 return x;
819}
820
821/* popcount64 is only available on 64 bit cpus as gcc builtin */
822/* so for this version we are lazy */
823ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
824ecb_function_ int
825ecb_popcount64 (uint64_t x)
826{
827 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
828}
829
830ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
831ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
832ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
833ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
834ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
835ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
836ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
837ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
838
839ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
840ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
841ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
842ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
843ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
844ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
845ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
846ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
847
848#if ECB_GCC_VERSION(4,3)
849 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
850 #define ecb_bswap32(x) __builtin_bswap32 (x)
851 #define ecb_bswap64(x) __builtin_bswap64 (x)
852#else
853 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
854 ecb_function_ uint16_t
855 ecb_bswap16 (uint16_t x)
856 {
857 return ecb_rotl16 (x, 8);
858 }
859
860 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
861 ecb_function_ uint32_t
862 ecb_bswap32 (uint32_t x)
863 {
864 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
865 }
866
867 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
868 ecb_function_ uint64_t
869 ecb_bswap64 (uint64_t x)
870 {
871 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
872 }
873#endif
874
875#if ECB_GCC_VERSION(4,5)
876 #define ecb_unreachable() __builtin_unreachable ()
877#else
878 /* this seems to work fine, but gcc always emits a warning for it :/ */
879 ecb_inline void ecb_unreachable (void) ecb_noreturn;
880 ecb_inline void ecb_unreachable (void) { }
881#endif
882
883/* try to tell the compiler that some condition is definitely true */
884#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
885
886ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
887ecb_inline unsigned char
888ecb_byteorder_helper (void)
889{
890 const uint32_t u = 0x11223344;
891 return *(unsigned char *)&u;
892}
893
894ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
895ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
896ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
897ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
898
899#if ECB_GCC_VERSION(3,0) || ECB_C99
900 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
901#else
902 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
903#endif
904
905#if __cplusplus
906 template<typename T>
907 static inline T ecb_div_rd (T val, T div)
908 {
909 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
910 }
911 template<typename T>
912 static inline T ecb_div_ru (T val, T div)
913 {
914 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
915 }
916#else
917 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
918 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
919#endif
920
921#if ecb_cplusplus_does_not_suck
922 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
923 template<typename T, int N>
924 static inline int ecb_array_length (const T (&arr)[N])
925 {
926 return N;
927 }
928#else
929 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
930#endif
931
932#endif
933
934/* ECB.H END */
935
936#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
937/* if your architecture doesn't need memory fences, e.g. because it is
938 * single-cpu/core, or if you use libev in a project that doesn't use libev
939 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
940 * libev, in which cases the memory fences become nops.
941 * alternatively, you can remove this #error and link against libpthread,
942 * which will then provide the memory fences.
943 */
944# error "memory fences not defined for your architecture, please report"
945#endif
946
947#ifndef ECB_MEMORY_FENCE
948# define ECB_MEMORY_FENCE do { } while (0)
949# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
950# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
951#endif
952
953#define expect_false(cond) ecb_expect_false (cond)
954#define expect_true(cond) ecb_expect_true (cond)
955#define noinline ecb_noinline
956
381#define inline_size static inline 957#define inline_size ecb_inline
382 958
383#if EV_MINIMAL 959#if EV_FEATURE_CODE
960# define inline_speed ecb_inline
961#else
384# define inline_speed static noinline 962# define inline_speed static noinline
963#endif
964
965#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
966
967#if EV_MINPRI == EV_MAXPRI
968# define ABSPRI(w) (((W)w), 0)
385#else 969#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) 970# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
971#endif
391 972
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 973#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 974#define EMPTY2(a,b) /* used to suppress some warnings */
394 975
395typedef ev_watcher *W; 976typedef ev_watcher *W;
… …
397typedef ev_watcher_time *WT; 978typedef ev_watcher_time *WT;
398 979
399#define ev_active(w) ((W)(w))->active 980#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 981#define ev_at(w) ((WT)(w))->at
401 982
983#if EV_USE_REALTIME
984/* sig_atomic_t is used to avoid per-thread variables or locking but still */
985/* giving it a reasonably high chance of working on typical architectures */
986static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
987#endif
988
402#if EV_USE_MONOTONIC 989#if EV_USE_MONOTONIC
403/* 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 */
405static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 990static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
991#endif
992
993#ifndef EV_FD_TO_WIN32_HANDLE
994# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
995#endif
996#ifndef EV_WIN32_HANDLE_TO_FD
997# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
998#endif
999#ifndef EV_WIN32_CLOSE_FD
1000# define EV_WIN32_CLOSE_FD(fd) close (fd)
406#endif 1001#endif
407 1002
408#ifdef _WIN32 1003#ifdef _WIN32
409# include "ev_win32.c" 1004# include "ev_win32.c"
410#endif 1005#endif
411 1006
412/*****************************************************************************/ 1007/*****************************************************************************/
413 1008
1009/* define a suitable floor function (only used by periodics atm) */
1010
1011#if EV_USE_FLOOR
1012# include <math.h>
1013# define ev_floor(v) floor (v)
1014#else
1015
1016#include <float.h>
1017
1018/* a floor() replacement function, should be independent of ev_tstamp type */
1019static ev_tstamp noinline
1020ev_floor (ev_tstamp v)
1021{
1022 /* the choice of shift factor is not terribly important */
1023#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1024 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1025#else
1026 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1027#endif
1028
1029 /* argument too large for an unsigned long? */
1030 if (expect_false (v >= shift))
1031 {
1032 ev_tstamp f;
1033
1034 if (v == v - 1.)
1035 return v; /* very large number */
1036
1037 f = shift * ev_floor (v * (1. / shift));
1038 return f + ev_floor (v - f);
1039 }
1040
1041 /* special treatment for negative args? */
1042 if (expect_false (v < 0.))
1043 {
1044 ev_tstamp f = -ev_floor (-v);
1045
1046 return f - (f == v ? 0 : 1);
1047 }
1048
1049 /* fits into an unsigned long */
1050 return (unsigned long)v;
1051}
1052
1053#endif
1054
1055/*****************************************************************************/
1056
1057#ifdef __linux
1058# include <sys/utsname.h>
1059#endif
1060
1061static unsigned int noinline ecb_cold
1062ev_linux_version (void)
1063{
1064#ifdef __linux
1065 unsigned int v = 0;
1066 struct utsname buf;
1067 int i;
1068 char *p = buf.release;
1069
1070 if (uname (&buf))
1071 return 0;
1072
1073 for (i = 3+1; --i; )
1074 {
1075 unsigned int c = 0;
1076
1077 for (;;)
1078 {
1079 if (*p >= '0' && *p <= '9')
1080 c = c * 10 + *p++ - '0';
1081 else
1082 {
1083 p += *p == '.';
1084 break;
1085 }
1086 }
1087
1088 v = (v << 8) | c;
1089 }
1090
1091 return v;
1092#else
1093 return 0;
1094#endif
1095}
1096
1097/*****************************************************************************/
1098
1099#if EV_AVOID_STDIO
1100static void noinline ecb_cold
1101ev_printerr (const char *msg)
1102{
1103 write (STDERR_FILENO, msg, strlen (msg));
1104}
1105#endif
1106
414static void (*syserr_cb)(const char *msg); 1107static void (*syserr_cb)(const char *msg) EV_THROW;
415 1108
416void 1109void ecb_cold
417ev_set_syserr_cb (void (*cb)(const char *msg)) 1110ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
418{ 1111{
419 syserr_cb = cb; 1112 syserr_cb = cb;
420} 1113}
421 1114
422static void noinline 1115static void noinline ecb_cold
423ev_syserr (const char *msg) 1116ev_syserr (const char *msg)
424{ 1117{
425 if (!msg) 1118 if (!msg)
426 msg = "(libev) system error"; 1119 msg = "(libev) system error";
427 1120
428 if (syserr_cb) 1121 if (syserr_cb)
429 syserr_cb (msg); 1122 syserr_cb (msg);
430 else 1123 else
431 { 1124 {
1125#if EV_AVOID_STDIO
1126 ev_printerr (msg);
1127 ev_printerr (": ");
1128 ev_printerr (strerror (errno));
1129 ev_printerr ("\n");
1130#else
432 perror (msg); 1131 perror (msg);
1132#endif
433 abort (); 1133 abort ();
434 } 1134 }
435} 1135}
436 1136
437static void * 1137static void *
438ev_realloc_emul (void *ptr, long size) 1138ev_realloc_emul (void *ptr, long size) EV_THROW
439{ 1139{
1140#if __GLIBC__
1141 return realloc (ptr, size);
1142#else
440 /* some systems, notably openbsd and darwin, fail to properly 1143 /* some systems, notably openbsd and darwin, fail to properly
441 * implement realloc (x, 0) (as required by both ansi c-98 and 1144 * implement realloc (x, 0) (as required by both ansi c-89 and
442 * the single unix specification, so work around them here. 1145 * the single unix specification, so work around them here.
443 */ 1146 */
444 1147
445 if (size) 1148 if (size)
446 return realloc (ptr, size); 1149 return realloc (ptr, size);
447 1150
448 free (ptr); 1151 free (ptr);
449 return 0; 1152 return 0;
1153#endif
450} 1154}
451 1155
452static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1156static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
453 1157
454void 1158void ecb_cold
455ev_set_allocator (void *(*cb)(void *ptr, long size)) 1159ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
456{ 1160{
457 alloc = cb; 1161 alloc = cb;
458} 1162}
459 1163
460inline_speed void * 1164inline_speed void *
… …
462{ 1166{
463 ptr = alloc (ptr, size); 1167 ptr = alloc (ptr, size);
464 1168
465 if (!ptr && size) 1169 if (!ptr && size)
466 { 1170 {
1171#if EV_AVOID_STDIO
1172 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1173#else
467 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1174 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1175#endif
468 abort (); 1176 abort ();
469 } 1177 }
470 1178
471 return ptr; 1179 return ptr;
472} 1180}
… …
474#define ev_malloc(size) ev_realloc (0, (size)) 1182#define ev_malloc(size) ev_realloc (0, (size))
475#define ev_free(ptr) ev_realloc ((ptr), 0) 1183#define ev_free(ptr) ev_realloc ((ptr), 0)
476 1184
477/*****************************************************************************/ 1185/*****************************************************************************/
478 1186
1187/* set in reify when reification needed */
1188#define EV_ANFD_REIFY 1
1189
1190/* file descriptor info structure */
479typedef struct 1191typedef struct
480{ 1192{
481 WL head; 1193 WL head;
482 unsigned char events; 1194 unsigned char events; /* the events watched for */
483 unsigned char reify; 1195 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
484 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1196 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
485 unsigned char unused; 1197 unsigned char unused;
486#if EV_USE_EPOLL 1198#if EV_USE_EPOLL
487 unsigned int egen; /* generation counter to counter epoll bugs */ 1199 unsigned int egen; /* generation counter to counter epoll bugs */
488#endif 1200#endif
489#if EV_SELECT_IS_WINSOCKET 1201#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
490 SOCKET handle; 1202 SOCKET handle;
491#endif 1203#endif
1204#if EV_USE_IOCP
1205 OVERLAPPED or, ow;
1206#endif
492} ANFD; 1207} ANFD;
493 1208
1209/* stores the pending event set for a given watcher */
494typedef struct 1210typedef struct
495{ 1211{
496 W w; 1212 W w;
497 int events; 1213 int events; /* the pending event set for the given watcher */
498} ANPENDING; 1214} ANPENDING;
499 1215
500#if EV_USE_INOTIFY 1216#if EV_USE_INOTIFY
501/* hash table entry per inotify-id */ 1217/* hash table entry per inotify-id */
502typedef struct 1218typedef struct
… …
505} ANFS; 1221} ANFS;
506#endif 1222#endif
507 1223
508/* Heap Entry */ 1224/* Heap Entry */
509#if EV_HEAP_CACHE_AT 1225#if EV_HEAP_CACHE_AT
1226 /* a heap element */
510 typedef struct { 1227 typedef struct {
511 ev_tstamp at; 1228 ev_tstamp at;
512 WT w; 1229 WT w;
513 } ANHE; 1230 } ANHE;
514 1231
515 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1232 #define ANHE_w(he) (he).w /* access watcher, read-write */
516 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1233 #define ANHE_at(he) (he).at /* access cached at, read-only */
517 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 1234 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
518#else 1235#else
1236 /* a heap element */
519 typedef WT ANHE; 1237 typedef WT ANHE;
520 1238
521 #define ANHE_w(he) (he) 1239 #define ANHE_w(he) (he)
522 #define ANHE_at(he) (he)->at 1240 #define ANHE_at(he) (he)->at
523 #define ANHE_at_cache(he) 1241 #define ANHE_at_cache(he)
… …
534 #undef VAR 1252 #undef VAR
535 }; 1253 };
536 #include "ev_wrap.h" 1254 #include "ev_wrap.h"
537 1255
538 static struct ev_loop default_loop_struct; 1256 static struct ev_loop default_loop_struct;
539 struct ev_loop *ev_default_loop_ptr; 1257 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
540 1258
541#else 1259#else
542 1260
543 ev_tstamp ev_rt_now; 1261 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
544 #define VAR(name,decl) static decl; 1262 #define VAR(name,decl) static decl;
545 #include "ev_vars.h" 1263 #include "ev_vars.h"
546 #undef VAR 1264 #undef VAR
547 1265
548 static int ev_default_loop_ptr; 1266 static int ev_default_loop_ptr;
549 1267
550#endif 1268#endif
551 1269
1270#if EV_FEATURE_API
1271# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1272# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1273# define EV_INVOKE_PENDING invoke_cb (EV_A)
1274#else
1275# define EV_RELEASE_CB (void)0
1276# define EV_ACQUIRE_CB (void)0
1277# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1278#endif
1279
1280#define EVBREAK_RECURSE 0x80
1281
552/*****************************************************************************/ 1282/*****************************************************************************/
553 1283
1284#ifndef EV_HAVE_EV_TIME
554ev_tstamp 1285ev_tstamp
555ev_time (void) 1286ev_time (void) EV_THROW
556{ 1287{
557#if EV_USE_REALTIME 1288#if EV_USE_REALTIME
1289 if (expect_true (have_realtime))
1290 {
558 struct timespec ts; 1291 struct timespec ts;
559 clock_gettime (CLOCK_REALTIME, &ts); 1292 clock_gettime (CLOCK_REALTIME, &ts);
560 return ts.tv_sec + ts.tv_nsec * 1e-9; 1293 return ts.tv_sec + ts.tv_nsec * 1e-9;
561#else 1294 }
1295#endif
1296
562 struct timeval tv; 1297 struct timeval tv;
563 gettimeofday (&tv, 0); 1298 gettimeofday (&tv, 0);
564 return tv.tv_sec + tv.tv_usec * 1e-6; 1299 return tv.tv_sec + tv.tv_usec * 1e-6;
565#endif
566} 1300}
1301#endif
567 1302
568ev_tstamp inline_size 1303inline_size ev_tstamp
569get_clock (void) 1304get_clock (void)
570{ 1305{
571#if EV_USE_MONOTONIC 1306#if EV_USE_MONOTONIC
572 if (expect_true (have_monotonic)) 1307 if (expect_true (have_monotonic))
573 { 1308 {
… …
580 return ev_time (); 1315 return ev_time ();
581} 1316}
582 1317
583#if EV_MULTIPLICITY 1318#if EV_MULTIPLICITY
584ev_tstamp 1319ev_tstamp
585ev_now (EV_P) 1320ev_now (EV_P) EV_THROW
586{ 1321{
587 return ev_rt_now; 1322 return ev_rt_now;
588} 1323}
589#endif 1324#endif
590 1325
591void 1326void
592ev_sleep (ev_tstamp delay) 1327ev_sleep (ev_tstamp delay) EV_THROW
593{ 1328{
594 if (delay > 0.) 1329 if (delay > 0.)
595 { 1330 {
596#if EV_USE_NANOSLEEP 1331#if EV_USE_NANOSLEEP
597 struct timespec ts; 1332 struct timespec ts;
598 1333
599 ts.tv_sec = (time_t)delay; 1334 EV_TS_SET (ts, delay);
600 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
601
602 nanosleep (&ts, 0); 1335 nanosleep (&ts, 0);
603#elif defined(_WIN32) 1336#elif defined _WIN32
604 Sleep ((unsigned long)(delay * 1e3)); 1337 Sleep ((unsigned long)(delay * 1e3));
605#else 1338#else
606 struct timeval tv; 1339 struct timeval tv;
607 1340
608 tv.tv_sec = (time_t)delay;
609 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
610
611 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1341 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
612 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1342 /* something not guaranteed by newer posix versions, but guaranteed */
613 /* by older ones */ 1343 /* by older ones */
1344 EV_TV_SET (tv, delay);
614 select (0, 0, 0, 0, &tv); 1345 select (0, 0, 0, 0, &tv);
615#endif 1346#endif
616 } 1347 }
617} 1348}
618 1349
619/*****************************************************************************/ 1350/*****************************************************************************/
620 1351
621#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1352#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
622 1353
623int inline_size 1354/* find a suitable new size for the given array, */
1355/* hopefully by rounding to a nice-to-malloc size */
1356inline_size int
624array_nextsize (int elem, int cur, int cnt) 1357array_nextsize (int elem, int cur, int cnt)
625{ 1358{
626 int ncur = cur + 1; 1359 int ncur = cur + 1;
627 1360
628 do 1361 do
629 ncur <<= 1; 1362 ncur <<= 1;
630 while (cnt > ncur); 1363 while (cnt > ncur);
631 1364
632 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1365 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
633 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1366 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
634 { 1367 {
635 ncur *= elem; 1368 ncur *= elem;
636 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1369 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
637 ncur = ncur - sizeof (void *) * 4; 1370 ncur = ncur - sizeof (void *) * 4;
… …
639 } 1372 }
640 1373
641 return ncur; 1374 return ncur;
642} 1375}
643 1376
644static noinline void * 1377static void * noinline ecb_cold
645array_realloc (int elem, void *base, int *cur, int cnt) 1378array_realloc (int elem, void *base, int *cur, int cnt)
646{ 1379{
647 *cur = array_nextsize (elem, *cur, cnt); 1380 *cur = array_nextsize (elem, *cur, cnt);
648 return ev_realloc (base, elem * *cur); 1381 return ev_realloc (base, elem * *cur);
649} 1382}
… …
652 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1385 memset ((void *)(base), 0, sizeof (*(base)) * (count))
653 1386
654#define array_needsize(type,base,cur,cnt,init) \ 1387#define array_needsize(type,base,cur,cnt,init) \
655 if (expect_false ((cnt) > (cur))) \ 1388 if (expect_false ((cnt) > (cur))) \
656 { \ 1389 { \
657 int ocur_ = (cur); \ 1390 int ecb_unused ocur_ = (cur); \
658 (base) = (type *)array_realloc \ 1391 (base) = (type *)array_realloc \
659 (sizeof (type), (base), &(cur), (cnt)); \ 1392 (sizeof (type), (base), &(cur), (cnt)); \
660 init ((base) + (ocur_), (cur) - ocur_); \ 1393 init ((base) + (ocur_), (cur) - ocur_); \
661 } 1394 }
662 1395
… …
669 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1402 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
670 } 1403 }
671#endif 1404#endif
672 1405
673#define array_free(stem, idx) \ 1406#define array_free(stem, idx) \
674 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1407 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
675 1408
676/*****************************************************************************/ 1409/*****************************************************************************/
677 1410
1411/* dummy callback for pending events */
1412static void noinline
1413pendingcb (EV_P_ ev_prepare *w, int revents)
1414{
1415}
1416
678void noinline 1417void noinline
679ev_feed_event (EV_P_ void *w, int revents) 1418ev_feed_event (EV_P_ void *w, int revents) EV_THROW
680{ 1419{
681 W w_ = (W)w; 1420 W w_ = (W)w;
682 int pri = ABSPRI (w_); 1421 int pri = ABSPRI (w_);
683 1422
684 if (expect_false (w_->pending)) 1423 if (expect_false (w_->pending))
… …
688 w_->pending = ++pendingcnt [pri]; 1427 w_->pending = ++pendingcnt [pri];
689 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1428 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
690 pendings [pri][w_->pending - 1].w = w_; 1429 pendings [pri][w_->pending - 1].w = w_;
691 pendings [pri][w_->pending - 1].events = revents; 1430 pendings [pri][w_->pending - 1].events = revents;
692 } 1431 }
693}
694 1432
695void inline_speed 1433 pendingpri = NUMPRI - 1;
1434}
1435
1436inline_speed void
1437feed_reverse (EV_P_ W w)
1438{
1439 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1440 rfeeds [rfeedcnt++] = w;
1441}
1442
1443inline_size void
1444feed_reverse_done (EV_P_ int revents)
1445{
1446 do
1447 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1448 while (rfeedcnt);
1449}
1450
1451inline_speed void
696queue_events (EV_P_ W *events, int eventcnt, int type) 1452queue_events (EV_P_ W *events, int eventcnt, int type)
697{ 1453{
698 int i; 1454 int i;
699 1455
700 for (i = 0; i < eventcnt; ++i) 1456 for (i = 0; i < eventcnt; ++i)
701 ev_feed_event (EV_A_ events [i], type); 1457 ev_feed_event (EV_A_ events [i], type);
702} 1458}
703 1459
704/*****************************************************************************/ 1460/*****************************************************************************/
705 1461
706void inline_speed 1462inline_speed void
707fd_event (EV_P_ int fd, int revents) 1463fd_event_nocheck (EV_P_ int fd, int revents)
708{ 1464{
709 ANFD *anfd = anfds + fd; 1465 ANFD *anfd = anfds + fd;
710 ev_io *w; 1466 ev_io *w;
711 1467
712 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1468 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
716 if (ev) 1472 if (ev)
717 ev_feed_event (EV_A_ (W)w, ev); 1473 ev_feed_event (EV_A_ (W)w, ev);
718 } 1474 }
719} 1475}
720 1476
1477/* do not submit kernel events for fds that have reify set */
1478/* because that means they changed while we were polling for new events */
1479inline_speed void
1480fd_event (EV_P_ int fd, int revents)
1481{
1482 ANFD *anfd = anfds + fd;
1483
1484 if (expect_true (!anfd->reify))
1485 fd_event_nocheck (EV_A_ fd, revents);
1486}
1487
721void 1488void
722ev_feed_fd_event (EV_P_ int fd, int revents) 1489ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
723{ 1490{
724 if (fd >= 0 && fd < anfdmax) 1491 if (fd >= 0 && fd < anfdmax)
725 fd_event (EV_A_ fd, revents); 1492 fd_event_nocheck (EV_A_ fd, revents);
726} 1493}
727 1494
728void inline_size 1495/* make sure the external fd watch events are in-sync */
1496/* with the kernel/libev internal state */
1497inline_size void
729fd_reify (EV_P) 1498fd_reify (EV_P)
730{ 1499{
731 int i; 1500 int i;
1501
1502#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1503 for (i = 0; i < fdchangecnt; ++i)
1504 {
1505 int fd = fdchanges [i];
1506 ANFD *anfd = anfds + fd;
1507
1508 if (anfd->reify & EV__IOFDSET && anfd->head)
1509 {
1510 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1511
1512 if (handle != anfd->handle)
1513 {
1514 unsigned long arg;
1515
1516 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1517
1518 /* handle changed, but fd didn't - we need to do it in two steps */
1519 backend_modify (EV_A_ fd, anfd->events, 0);
1520 anfd->events = 0;
1521 anfd->handle = handle;
1522 }
1523 }
1524 }
1525#endif
732 1526
733 for (i = 0; i < fdchangecnt; ++i) 1527 for (i = 0; i < fdchangecnt; ++i)
734 { 1528 {
735 int fd = fdchanges [i]; 1529 int fd = fdchanges [i];
736 ANFD *anfd = anfds + fd; 1530 ANFD *anfd = anfds + fd;
737 ev_io *w; 1531 ev_io *w;
738 1532
739 unsigned char events = 0; 1533 unsigned char o_events = anfd->events;
1534 unsigned char o_reify = anfd->reify;
740 1535
741 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1536 anfd->reify = 0;
742 events |= (unsigned char)w->events;
743 1537
744#if EV_SELECT_IS_WINSOCKET 1538 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
745 if (events)
746 { 1539 {
747 unsigned long arg; 1540 anfd->events = 0;
748 #ifdef EV_FD_TO_WIN32_HANDLE 1541
749 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1542 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
750 #else 1543 anfd->events |= (unsigned char)w->events;
751 anfd->handle = _get_osfhandle (fd); 1544
752 #endif 1545 if (o_events != anfd->events)
753 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1546 o_reify = EV__IOFDSET; /* actually |= */
754 } 1547 }
755#endif
756 1548
757 { 1549 if (o_reify & EV__IOFDSET)
758 unsigned char o_events = anfd->events;
759 unsigned char o_reify = anfd->reify;
760
761 anfd->reify = 0;
762 anfd->events = events;
763
764 if (o_events != events || o_reify & EV_IOFDSET)
765 backend_modify (EV_A_ fd, o_events, events); 1550 backend_modify (EV_A_ fd, o_events, anfd->events);
766 }
767 } 1551 }
768 1552
769 fdchangecnt = 0; 1553 fdchangecnt = 0;
770} 1554}
771 1555
772void inline_size 1556/* something about the given fd changed */
1557inline_size void
773fd_change (EV_P_ int fd, int flags) 1558fd_change (EV_P_ int fd, int flags)
774{ 1559{
775 unsigned char reify = anfds [fd].reify; 1560 unsigned char reify = anfds [fd].reify;
776 anfds [fd].reify |= flags; 1561 anfds [fd].reify |= flags;
777 1562
… …
781 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1566 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
782 fdchanges [fdchangecnt - 1] = fd; 1567 fdchanges [fdchangecnt - 1] = fd;
783 } 1568 }
784} 1569}
785 1570
786void inline_speed 1571/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1572inline_speed void ecb_cold
787fd_kill (EV_P_ int fd) 1573fd_kill (EV_P_ int fd)
788{ 1574{
789 ev_io *w; 1575 ev_io *w;
790 1576
791 while ((w = (ev_io *)anfds [fd].head)) 1577 while ((w = (ev_io *)anfds [fd].head))
… …
793 ev_io_stop (EV_A_ w); 1579 ev_io_stop (EV_A_ w);
794 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1580 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
795 } 1581 }
796} 1582}
797 1583
798int inline_size 1584/* check whether the given fd is actually valid, for error recovery */
1585inline_size int ecb_cold
799fd_valid (int fd) 1586fd_valid (int fd)
800{ 1587{
801#ifdef _WIN32 1588#ifdef _WIN32
802 return _get_osfhandle (fd) != -1; 1589 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
803#else 1590#else
804 return fcntl (fd, F_GETFD) != -1; 1591 return fcntl (fd, F_GETFD) != -1;
805#endif 1592#endif
806} 1593}
807 1594
808/* called on EBADF to verify fds */ 1595/* called on EBADF to verify fds */
809static void noinline 1596static void noinline ecb_cold
810fd_ebadf (EV_P) 1597fd_ebadf (EV_P)
811{ 1598{
812 int fd; 1599 int fd;
813 1600
814 for (fd = 0; fd < anfdmax; ++fd) 1601 for (fd = 0; fd < anfdmax; ++fd)
… …
816 if (!fd_valid (fd) && errno == EBADF) 1603 if (!fd_valid (fd) && errno == EBADF)
817 fd_kill (EV_A_ fd); 1604 fd_kill (EV_A_ fd);
818} 1605}
819 1606
820/* called on ENOMEM in select/poll to kill some fds and retry */ 1607/* called on ENOMEM in select/poll to kill some fds and retry */
821static void noinline 1608static void noinline ecb_cold
822fd_enomem (EV_P) 1609fd_enomem (EV_P)
823{ 1610{
824 int fd; 1611 int fd;
825 1612
826 for (fd = anfdmax; fd--; ) 1613 for (fd = anfdmax; fd--; )
827 if (anfds [fd].events) 1614 if (anfds [fd].events)
828 { 1615 {
829 fd_kill (EV_A_ fd); 1616 fd_kill (EV_A_ fd);
830 return; 1617 break;
831 } 1618 }
832} 1619}
833 1620
834/* usually called after fork if backend needs to re-arm all fds from scratch */ 1621/* usually called after fork if backend needs to re-arm all fds from scratch */
835static void noinline 1622static void noinline
… …
840 for (fd = 0; fd < anfdmax; ++fd) 1627 for (fd = 0; fd < anfdmax; ++fd)
841 if (anfds [fd].events) 1628 if (anfds [fd].events)
842 { 1629 {
843 anfds [fd].events = 0; 1630 anfds [fd].events = 0;
844 anfds [fd].emask = 0; 1631 anfds [fd].emask = 0;
845 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1632 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
846 } 1633 }
847} 1634}
848 1635
1636/* used to prepare libev internal fd's */
1637/* this is not fork-safe */
1638inline_speed void
1639fd_intern (int fd)
1640{
1641#ifdef _WIN32
1642 unsigned long arg = 1;
1643 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1644#else
1645 fcntl (fd, F_SETFD, FD_CLOEXEC);
1646 fcntl (fd, F_SETFL, O_NONBLOCK);
1647#endif
1648}
1649
849/*****************************************************************************/ 1650/*****************************************************************************/
850 1651
851/* 1652/*
852 * the heap functions want a real array index. array index 0 uis guaranteed to not 1653 * the heap functions want a real array index. array index 0 is guaranteed to not
853 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1654 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
854 * the branching factor of the d-tree. 1655 * the branching factor of the d-tree.
855 */ 1656 */
856 1657
857/* 1658/*
… …
866#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1667#define HEAP0 (DHEAP - 1) /* index of first element in heap */
867#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1668#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
868#define UPHEAP_DONE(p,k) ((p) == (k)) 1669#define UPHEAP_DONE(p,k) ((p) == (k))
869 1670
870/* away from the root */ 1671/* away from the root */
871void inline_speed 1672inline_speed void
872downheap (ANHE *heap, int N, int k) 1673downheap (ANHE *heap, int N, int k)
873{ 1674{
874 ANHE he = heap [k]; 1675 ANHE he = heap [k];
875 ANHE *E = heap + N + HEAP0; 1676 ANHE *E = heap + N + HEAP0;
876 1677
… …
916#define HEAP0 1 1717#define HEAP0 1
917#define HPARENT(k) ((k) >> 1) 1718#define HPARENT(k) ((k) >> 1)
918#define UPHEAP_DONE(p,k) (!(p)) 1719#define UPHEAP_DONE(p,k) (!(p))
919 1720
920/* away from the root */ 1721/* away from the root */
921void inline_speed 1722inline_speed void
922downheap (ANHE *heap, int N, int k) 1723downheap (ANHE *heap, int N, int k)
923{ 1724{
924 ANHE he = heap [k]; 1725 ANHE he = heap [k];
925 1726
926 for (;;) 1727 for (;;)
927 { 1728 {
928 int c = k << 1; 1729 int c = k << 1;
929 1730
930 if (c > N + HEAP0 - 1) 1731 if (c >= N + HEAP0)
931 break; 1732 break;
932 1733
933 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1734 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
934 ? 1 : 0; 1735 ? 1 : 0;
935 1736
… …
946 ev_active (ANHE_w (he)) = k; 1747 ev_active (ANHE_w (he)) = k;
947} 1748}
948#endif 1749#endif
949 1750
950/* towards the root */ 1751/* towards the root */
951void inline_speed 1752inline_speed void
952upheap (ANHE *heap, int k) 1753upheap (ANHE *heap, int k)
953{ 1754{
954 ANHE he = heap [k]; 1755 ANHE he = heap [k];
955 1756
956 for (;;) 1757 for (;;)
… …
967 1768
968 heap [k] = he; 1769 heap [k] = he;
969 ev_active (ANHE_w (he)) = k; 1770 ev_active (ANHE_w (he)) = k;
970} 1771}
971 1772
972void inline_size 1773/* move an element suitably so it is in a correct place */
1774inline_size void
973adjustheap (ANHE *heap, int N, int k) 1775adjustheap (ANHE *heap, int N, int k)
974{ 1776{
975 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1777 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
976 upheap (heap, k); 1778 upheap (heap, k);
977 else 1779 else
978 downheap (heap, N, k); 1780 downheap (heap, N, k);
979} 1781}
980 1782
981/* rebuild the heap: this function is used only once and executed rarely */ 1783/* rebuild the heap: this function is used only once and executed rarely */
982void inline_size 1784inline_size void
983reheap (ANHE *heap, int N) 1785reheap (ANHE *heap, int N)
984{ 1786{
985 int i; 1787 int i;
986 1788
987 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1789 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
990 upheap (heap, i + HEAP0); 1792 upheap (heap, i + HEAP0);
991} 1793}
992 1794
993/*****************************************************************************/ 1795/*****************************************************************************/
994 1796
1797/* associate signal watchers to a signal signal */
995typedef struct 1798typedef struct
996{ 1799{
1800 EV_ATOMIC_T pending;
1801#if EV_MULTIPLICITY
1802 EV_P;
1803#endif
997 WL head; 1804 WL head;
998 EV_ATOMIC_T gotsig;
999} ANSIG; 1805} ANSIG;
1000 1806
1001static ANSIG *signals; 1807static ANSIG signals [EV_NSIG - 1];
1002static int signalmax;
1003
1004static EV_ATOMIC_T gotsig;
1005 1808
1006/*****************************************************************************/ 1809/*****************************************************************************/
1007 1810
1008void inline_speed 1811#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1009fd_intern (int fd)
1010{
1011#ifdef _WIN32
1012 unsigned long arg = 1;
1013 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1014#else
1015 fcntl (fd, F_SETFD, FD_CLOEXEC);
1016 fcntl (fd, F_SETFL, O_NONBLOCK);
1017#endif
1018}
1019 1812
1020static void noinline 1813static void noinline ecb_cold
1021evpipe_init (EV_P) 1814evpipe_init (EV_P)
1022{ 1815{
1023 if (!ev_is_active (&pipeev)) 1816 if (!ev_is_active (&pipe_w))
1024 { 1817 {
1025#if EV_USE_EVENTFD 1818# if EV_USE_EVENTFD
1819 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1820 if (evfd < 0 && errno == EINVAL)
1026 if ((evfd = eventfd (0, 0)) >= 0) 1821 evfd = eventfd (0, 0);
1822
1823 if (evfd >= 0)
1027 { 1824 {
1028 evpipe [0] = -1; 1825 evpipe [0] = -1;
1029 fd_intern (evfd); 1826 fd_intern (evfd); /* doing it twice doesn't hurt */
1030 ev_io_set (&pipeev, evfd, EV_READ); 1827 ev_io_set (&pipe_w, evfd, EV_READ);
1031 } 1828 }
1032 else 1829 else
1033#endif 1830# endif
1034 { 1831 {
1035 while (pipe (evpipe)) 1832 while (pipe (evpipe))
1036 ev_syserr ("(libev) error creating signal/async pipe"); 1833 ev_syserr ("(libev) error creating signal/async pipe");
1037 1834
1038 fd_intern (evpipe [0]); 1835 fd_intern (evpipe [0]);
1039 fd_intern (evpipe [1]); 1836 fd_intern (evpipe [1]);
1040 ev_io_set (&pipeev, evpipe [0], EV_READ); 1837 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1041 } 1838 }
1042 1839
1043 ev_io_start (EV_A_ &pipeev); 1840 ev_io_start (EV_A_ &pipe_w);
1044 ev_unref (EV_A); /* watcher should not keep loop alive */ 1841 ev_unref (EV_A); /* watcher should not keep loop alive */
1045 } 1842 }
1046} 1843}
1047 1844
1048void inline_size 1845inline_speed void
1049evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1846evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1050{ 1847{
1051 if (!*flag) 1848 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1849
1850 if (expect_true (*flag))
1851 return;
1852
1853 *flag = 1;
1854
1855 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1856
1857 pipe_write_skipped = 1;
1858
1859 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1860
1861 if (pipe_write_wanted)
1052 { 1862 {
1863 int old_errno;
1864
1865 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1866
1053 int old_errno = errno; /* save errno because write might clobber it */ 1867 old_errno = errno; /* save errno because write will clobber it */
1054
1055 *flag = 1;
1056 1868
1057#if EV_USE_EVENTFD 1869#if EV_USE_EVENTFD
1058 if (evfd >= 0) 1870 if (evfd >= 0)
1059 { 1871 {
1060 uint64_t counter = 1; 1872 uint64_t counter = 1;
1061 write (evfd, &counter, sizeof (uint64_t)); 1873 write (evfd, &counter, sizeof (uint64_t));
1062 } 1874 }
1063 else 1875 else
1064#endif 1876#endif
1877 {
1878#ifdef _WIN32
1879 WSABUF buf;
1880 DWORD sent;
1881 buf.buf = &buf;
1882 buf.len = 1;
1883 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1884#else
1065 write (evpipe [1], &old_errno, 1); 1885 write (evpipe [1], &(evpipe [1]), 1);
1886#endif
1887 }
1066 1888
1067 errno = old_errno; 1889 errno = old_errno;
1068 } 1890 }
1069} 1891}
1070 1892
1893/* called whenever the libev signal pipe */
1894/* got some events (signal, async) */
1071static void 1895static void
1072pipecb (EV_P_ ev_io *iow, int revents) 1896pipecb (EV_P_ ev_io *iow, int revents)
1073{ 1897{
1898 int i;
1899
1900 if (revents & EV_READ)
1901 {
1074#if EV_USE_EVENTFD 1902#if EV_USE_EVENTFD
1075 if (evfd >= 0) 1903 if (evfd >= 0)
1076 { 1904 {
1077 uint64_t counter; 1905 uint64_t counter;
1078 read (evfd, &counter, sizeof (uint64_t)); 1906 read (evfd, &counter, sizeof (uint64_t));
1079 } 1907 }
1080 else 1908 else
1081#endif 1909#endif
1082 { 1910 {
1083 char dummy; 1911 char dummy[4];
1912#ifdef _WIN32
1913 WSABUF buf;
1914 DWORD recvd;
1915 DWORD flags = 0;
1916 buf.buf = dummy;
1917 buf.len = sizeof (dummy);
1918 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1919#else
1084 read (evpipe [0], &dummy, 1); 1920 read (evpipe [0], &dummy, sizeof (dummy));
1921#endif
1922 }
1923 }
1924
1925 pipe_write_skipped = 0;
1926
1927 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1928
1929#if EV_SIGNAL_ENABLE
1930 if (sig_pending)
1085 } 1931 {
1932 sig_pending = 0;
1086 1933
1087 if (gotsig && ev_is_default_loop (EV_A)) 1934 ECB_MEMORY_FENCE_RELEASE;
1088 {
1089 int signum;
1090 gotsig = 0;
1091 1935
1092 for (signum = signalmax; signum--; ) 1936 for (i = EV_NSIG - 1; i--; )
1093 if (signals [signum].gotsig) 1937 if (expect_false (signals [i].pending))
1094 ev_feed_signal_event (EV_A_ signum + 1); 1938 ev_feed_signal_event (EV_A_ i + 1);
1095 } 1939 }
1940#endif
1096 1941
1097#if EV_ASYNC_ENABLE 1942#if EV_ASYNC_ENABLE
1098 if (gotasync) 1943 if (async_pending)
1099 { 1944 {
1100 int i; 1945 async_pending = 0;
1101 gotasync = 0; 1946
1947 ECB_MEMORY_FENCE_RELEASE;
1102 1948
1103 for (i = asynccnt; i--; ) 1949 for (i = asynccnt; i--; )
1104 if (asyncs [i]->sent) 1950 if (asyncs [i]->sent)
1105 { 1951 {
1106 asyncs [i]->sent = 0; 1952 asyncs [i]->sent = 0;
… …
1110#endif 1956#endif
1111} 1957}
1112 1958
1113/*****************************************************************************/ 1959/*****************************************************************************/
1114 1960
1961void
1962ev_feed_signal (int signum) EV_THROW
1963{
1964#if EV_MULTIPLICITY
1965 EV_P = signals [signum - 1].loop;
1966
1967 if (!EV_A)
1968 return;
1969#endif
1970
1971 if (!ev_active (&pipe_w))
1972 return;
1973
1974 signals [signum - 1].pending = 1;
1975 evpipe_write (EV_A_ &sig_pending);
1976}
1977
1115static void 1978static void
1116ev_sighandler (int signum) 1979ev_sighandler (int signum)
1117{ 1980{
1981#ifdef _WIN32
1982 signal (signum, ev_sighandler);
1983#endif
1984
1985 ev_feed_signal (signum);
1986}
1987
1988void noinline
1989ev_feed_signal_event (EV_P_ int signum) EV_THROW
1990{
1991 WL w;
1992
1993 if (expect_false (signum <= 0 || signum > EV_NSIG))
1994 return;
1995
1996 --signum;
1997
1118#if EV_MULTIPLICITY 1998#if EV_MULTIPLICITY
1119 struct ev_loop *loop = &default_loop_struct; 1999 /* it is permissible to try to feed a signal to the wrong loop */
1120#endif 2000 /* or, likely more useful, feeding a signal nobody is waiting for */
1121 2001
1122#if _WIN32 2002 if (expect_false (signals [signum].loop != EV_A))
1123 signal (signum, ev_sighandler);
1124#endif
1125
1126 signals [signum - 1].gotsig = 1;
1127 evpipe_write (EV_A_ &gotsig);
1128}
1129
1130void noinline
1131ev_feed_signal_event (EV_P_ int signum)
1132{
1133 WL w;
1134
1135#if EV_MULTIPLICITY
1136 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1137#endif
1138
1139 --signum;
1140
1141 if (signum < 0 || signum >= signalmax)
1142 return; 2003 return;
2004#endif
1143 2005
1144 signals [signum].gotsig = 0; 2006 signals [signum].pending = 0;
1145 2007
1146 for (w = signals [signum].head; w; w = w->next) 2008 for (w = signals [signum].head; w; w = w->next)
1147 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2009 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1148} 2010}
1149 2011
2012#if EV_USE_SIGNALFD
2013static void
2014sigfdcb (EV_P_ ev_io *iow, int revents)
2015{
2016 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2017
2018 for (;;)
2019 {
2020 ssize_t res = read (sigfd, si, sizeof (si));
2021
2022 /* not ISO-C, as res might be -1, but works with SuS */
2023 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2024 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2025
2026 if (res < (ssize_t)sizeof (si))
2027 break;
2028 }
2029}
2030#endif
2031
2032#endif
2033
1150/*****************************************************************************/ 2034/*****************************************************************************/
1151 2035
2036#if EV_CHILD_ENABLE
1152static WL childs [EV_PID_HASHSIZE]; 2037static WL childs [EV_PID_HASHSIZE];
1153
1154#ifndef _WIN32
1155 2038
1156static ev_signal childev; 2039static ev_signal childev;
1157 2040
1158#ifndef WIFCONTINUED 2041#ifndef WIFCONTINUED
1159# define WIFCONTINUED(status) 0 2042# define WIFCONTINUED(status) 0
1160#endif 2043#endif
1161 2044
1162void inline_speed 2045/* handle a single child status event */
2046inline_speed void
1163child_reap (EV_P_ int chain, int pid, int status) 2047child_reap (EV_P_ int chain, int pid, int status)
1164{ 2048{
1165 ev_child *w; 2049 ev_child *w;
1166 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2050 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1167 2051
1168 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2052 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1169 { 2053 {
1170 if ((w->pid == pid || !w->pid) 2054 if ((w->pid == pid || !w->pid)
1171 && (!traced || (w->flags & 1))) 2055 && (!traced || (w->flags & 1)))
1172 { 2056 {
1173 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2057 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1180 2064
1181#ifndef WCONTINUED 2065#ifndef WCONTINUED
1182# define WCONTINUED 0 2066# define WCONTINUED 0
1183#endif 2067#endif
1184 2068
2069/* called on sigchld etc., calls waitpid */
1185static void 2070static void
1186childcb (EV_P_ ev_signal *sw, int revents) 2071childcb (EV_P_ ev_signal *sw, int revents)
1187{ 2072{
1188 int pid, status; 2073 int pid, status;
1189 2074
… …
1197 /* make sure we are called again until all children have been reaped */ 2082 /* make sure we are called again until all children have been reaped */
1198 /* we need to do it this way so that the callback gets called before we continue */ 2083 /* we need to do it this way so that the callback gets called before we continue */
1199 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2084 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1200 2085
1201 child_reap (EV_A_ pid, pid, status); 2086 child_reap (EV_A_ pid, pid, status);
1202 if (EV_PID_HASHSIZE > 1) 2087 if ((EV_PID_HASHSIZE) > 1)
1203 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2088 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1204} 2089}
1205 2090
1206#endif 2091#endif
1207 2092
1208/*****************************************************************************/ 2093/*****************************************************************************/
1209 2094
2095#if EV_USE_IOCP
2096# include "ev_iocp.c"
2097#endif
1210#if EV_USE_PORT 2098#if EV_USE_PORT
1211# include "ev_port.c" 2099# include "ev_port.c"
1212#endif 2100#endif
1213#if EV_USE_KQUEUE 2101#if EV_USE_KQUEUE
1214# include "ev_kqueue.c" 2102# include "ev_kqueue.c"
… …
1221#endif 2109#endif
1222#if EV_USE_SELECT 2110#if EV_USE_SELECT
1223# include "ev_select.c" 2111# include "ev_select.c"
1224#endif 2112#endif
1225 2113
1226int 2114int ecb_cold
1227ev_version_major (void) 2115ev_version_major (void) EV_THROW
1228{ 2116{
1229 return EV_VERSION_MAJOR; 2117 return EV_VERSION_MAJOR;
1230} 2118}
1231 2119
1232int 2120int ecb_cold
1233ev_version_minor (void) 2121ev_version_minor (void) EV_THROW
1234{ 2122{
1235 return EV_VERSION_MINOR; 2123 return EV_VERSION_MINOR;
1236} 2124}
1237 2125
1238/* return true if we are running with elevated privileges and should ignore env variables */ 2126/* return true if we are running with elevated privileges and should ignore env variables */
1239int inline_size 2127int inline_size ecb_cold
1240enable_secure (void) 2128enable_secure (void)
1241{ 2129{
1242#ifdef _WIN32 2130#ifdef _WIN32
1243 return 0; 2131 return 0;
1244#else 2132#else
1245 return getuid () != geteuid () 2133 return getuid () != geteuid ()
1246 || getgid () != getegid (); 2134 || getgid () != getegid ();
1247#endif 2135#endif
1248} 2136}
1249 2137
1250unsigned int 2138unsigned int ecb_cold
1251ev_supported_backends (void) 2139ev_supported_backends (void) EV_THROW
1252{ 2140{
1253 unsigned int flags = 0; 2141 unsigned int flags = 0;
1254 2142
1255 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2143 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1256 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2144 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1259 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2147 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1260 2148
1261 return flags; 2149 return flags;
1262} 2150}
1263 2151
1264unsigned int 2152unsigned int ecb_cold
1265ev_recommended_backends (void) 2153ev_recommended_backends (void) EV_THROW
1266{ 2154{
1267 unsigned int flags = ev_supported_backends (); 2155 unsigned int flags = ev_supported_backends ();
1268 2156
1269#ifndef __NetBSD__ 2157#ifndef __NetBSD__
1270 /* kqueue is borked on everything but netbsd apparently */ 2158 /* kqueue is borked on everything but netbsd apparently */
… …
1274#ifdef __APPLE__ 2162#ifdef __APPLE__
1275 /* only select works correctly on that "unix-certified" platform */ 2163 /* only select works correctly on that "unix-certified" platform */
1276 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2164 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1277 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2165 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1278#endif 2166#endif
2167#ifdef __FreeBSD__
2168 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2169#endif
1279 2170
1280 return flags; 2171 return flags;
1281} 2172}
1282 2173
2174unsigned int ecb_cold
2175ev_embeddable_backends (void) EV_THROW
2176{
2177 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2178
2179 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2180 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2181 flags &= ~EVBACKEND_EPOLL;
2182
2183 return flags;
2184}
2185
1283unsigned int 2186unsigned int
1284ev_embeddable_backends (void) 2187ev_backend (EV_P) EV_THROW
1285{ 2188{
1286 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2189 return backend;
1287
1288 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1289 /* please fix it and tell me how to detect the fix */
1290 flags &= ~EVBACKEND_EPOLL;
1291
1292 return flags;
1293} 2190}
1294 2191
2192#if EV_FEATURE_API
1295unsigned int 2193unsigned int
1296ev_backend (EV_P) 2194ev_iteration (EV_P) EV_THROW
1297{ 2195{
1298 return backend; 2196 return loop_count;
1299} 2197}
1300 2198
1301unsigned int 2199unsigned int
1302ev_loop_count (EV_P) 2200ev_depth (EV_P) EV_THROW
1303{ 2201{
1304 return loop_count; 2202 return loop_depth;
1305} 2203}
1306 2204
1307void 2205void
1308ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2206ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1309{ 2207{
1310 io_blocktime = interval; 2208 io_blocktime = interval;
1311} 2209}
1312 2210
1313void 2211void
1314ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2212ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1315{ 2213{
1316 timeout_blocktime = interval; 2214 timeout_blocktime = interval;
1317} 2215}
1318 2216
2217void
2218ev_set_userdata (EV_P_ void *data) EV_THROW
2219{
2220 userdata = data;
2221}
2222
2223void *
2224ev_userdata (EV_P) EV_THROW
2225{
2226 return userdata;
2227}
2228
2229void
2230ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2231{
2232 invoke_cb = invoke_pending_cb;
2233}
2234
2235void
2236ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2237{
2238 release_cb = release;
2239 acquire_cb = acquire;
2240}
2241#endif
2242
2243/* initialise a loop structure, must be zero-initialised */
1319static void noinline 2244static void noinline ecb_cold
1320loop_init (EV_P_ unsigned int flags) 2245loop_init (EV_P_ unsigned int flags) EV_THROW
1321{ 2246{
1322 if (!backend) 2247 if (!backend)
1323 { 2248 {
2249 origflags = flags;
2250
2251#if EV_USE_REALTIME
2252 if (!have_realtime)
2253 {
2254 struct timespec ts;
2255
2256 if (!clock_gettime (CLOCK_REALTIME, &ts))
2257 have_realtime = 1;
2258 }
2259#endif
2260
1324#if EV_USE_MONOTONIC 2261#if EV_USE_MONOTONIC
2262 if (!have_monotonic)
1325 { 2263 {
1326 struct timespec ts; 2264 struct timespec ts;
2265
1327 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2266 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1328 have_monotonic = 1; 2267 have_monotonic = 1;
1329 } 2268 }
1330#endif
1331
1332 ev_rt_now = ev_time ();
1333 mn_now = get_clock ();
1334 now_floor = mn_now;
1335 rtmn_diff = ev_rt_now - mn_now;
1336
1337 io_blocktime = 0.;
1338 timeout_blocktime = 0.;
1339 backend = 0;
1340 backend_fd = -1;
1341 gotasync = 0;
1342#if EV_USE_INOTIFY
1343 fs_fd = -2;
1344#endif 2269#endif
1345 2270
1346 /* pid check not overridable via env */ 2271 /* pid check not overridable via env */
1347#ifndef _WIN32 2272#ifndef _WIN32
1348 if (flags & EVFLAG_FORKCHECK) 2273 if (flags & EVFLAG_FORKCHECK)
… …
1352 if (!(flags & EVFLAG_NOENV) 2277 if (!(flags & EVFLAG_NOENV)
1353 && !enable_secure () 2278 && !enable_secure ()
1354 && getenv ("LIBEV_FLAGS")) 2279 && getenv ("LIBEV_FLAGS"))
1355 flags = atoi (getenv ("LIBEV_FLAGS")); 2280 flags = atoi (getenv ("LIBEV_FLAGS"));
1356 2281
1357 if (!(flags & 0x0000ffffU)) 2282 ev_rt_now = ev_time ();
2283 mn_now = get_clock ();
2284 now_floor = mn_now;
2285 rtmn_diff = ev_rt_now - mn_now;
2286#if EV_FEATURE_API
2287 invoke_cb = ev_invoke_pending;
2288#endif
2289
2290 io_blocktime = 0.;
2291 timeout_blocktime = 0.;
2292 backend = 0;
2293 backend_fd = -1;
2294 sig_pending = 0;
2295#if EV_ASYNC_ENABLE
2296 async_pending = 0;
2297#endif
2298 pipe_write_skipped = 0;
2299 pipe_write_wanted = 0;
2300#if EV_USE_INOTIFY
2301 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2302#endif
2303#if EV_USE_SIGNALFD
2304 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2305#endif
2306
2307 if (!(flags & EVBACKEND_MASK))
1358 flags |= ev_recommended_backends (); 2308 flags |= ev_recommended_backends ();
1359 2309
2310#if EV_USE_IOCP
2311 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2312#endif
1360#if EV_USE_PORT 2313#if EV_USE_PORT
1361 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2314 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1362#endif 2315#endif
1363#if EV_USE_KQUEUE 2316#if EV_USE_KQUEUE
1364 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2317 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1371#endif 2324#endif
1372#if EV_USE_SELECT 2325#if EV_USE_SELECT
1373 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2326 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1374#endif 2327#endif
1375 2328
2329 ev_prepare_init (&pending_w, pendingcb);
2330
2331#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1376 ev_init (&pipeev, pipecb); 2332 ev_init (&pipe_w, pipecb);
1377 ev_set_priority (&pipeev, EV_MAXPRI); 2333 ev_set_priority (&pipe_w, EV_MAXPRI);
2334#endif
1378 } 2335 }
1379} 2336}
1380 2337
1381static void noinline 2338/* free up a loop structure */
2339void ecb_cold
1382loop_destroy (EV_P) 2340ev_loop_destroy (EV_P)
1383{ 2341{
1384 int i; 2342 int i;
1385 2343
2344#if EV_MULTIPLICITY
2345 /* mimic free (0) */
2346 if (!EV_A)
2347 return;
2348#endif
2349
2350#if EV_CLEANUP_ENABLE
2351 /* queue cleanup watchers (and execute them) */
2352 if (expect_false (cleanupcnt))
2353 {
2354 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2355 EV_INVOKE_PENDING;
2356 }
2357#endif
2358
2359#if EV_CHILD_ENABLE
2360 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2361 {
2362 ev_ref (EV_A); /* child watcher */
2363 ev_signal_stop (EV_A_ &childev);
2364 }
2365#endif
2366
1386 if (ev_is_active (&pipeev)) 2367 if (ev_is_active (&pipe_w))
1387 { 2368 {
1388 ev_ref (EV_A); /* signal watcher */ 2369 /*ev_ref (EV_A);*/
1389 ev_io_stop (EV_A_ &pipeev); 2370 /*ev_io_stop (EV_A_ &pipe_w);*/
1390 2371
1391#if EV_USE_EVENTFD 2372#if EV_USE_EVENTFD
1392 if (evfd >= 0) 2373 if (evfd >= 0)
1393 close (evfd); 2374 close (evfd);
1394#endif 2375#endif
1395 2376
1396 if (evpipe [0] >= 0) 2377 if (evpipe [0] >= 0)
1397 { 2378 {
1398 close (evpipe [0]); 2379 EV_WIN32_CLOSE_FD (evpipe [0]);
1399 close (evpipe [1]); 2380 EV_WIN32_CLOSE_FD (evpipe [1]);
1400 } 2381 }
1401 } 2382 }
2383
2384#if EV_USE_SIGNALFD
2385 if (ev_is_active (&sigfd_w))
2386 close (sigfd);
2387#endif
1402 2388
1403#if EV_USE_INOTIFY 2389#if EV_USE_INOTIFY
1404 if (fs_fd >= 0) 2390 if (fs_fd >= 0)
1405 close (fs_fd); 2391 close (fs_fd);
1406#endif 2392#endif
1407 2393
1408 if (backend_fd >= 0) 2394 if (backend_fd >= 0)
1409 close (backend_fd); 2395 close (backend_fd);
1410 2396
2397#if EV_USE_IOCP
2398 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2399#endif
1411#if EV_USE_PORT 2400#if EV_USE_PORT
1412 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2401 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1413#endif 2402#endif
1414#if EV_USE_KQUEUE 2403#if EV_USE_KQUEUE
1415 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2404 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1430#if EV_IDLE_ENABLE 2419#if EV_IDLE_ENABLE
1431 array_free (idle, [i]); 2420 array_free (idle, [i]);
1432#endif 2421#endif
1433 } 2422 }
1434 2423
1435 ev_free (anfds); anfdmax = 0; 2424 ev_free (anfds); anfds = 0; anfdmax = 0;
1436 2425
1437 /* have to use the microsoft-never-gets-it-right macro */ 2426 /* have to use the microsoft-never-gets-it-right macro */
2427 array_free (rfeed, EMPTY);
1438 array_free (fdchange, EMPTY); 2428 array_free (fdchange, EMPTY);
1439 array_free (timer, EMPTY); 2429 array_free (timer, EMPTY);
1440#if EV_PERIODIC_ENABLE 2430#if EV_PERIODIC_ENABLE
1441 array_free (periodic, EMPTY); 2431 array_free (periodic, EMPTY);
1442#endif 2432#endif
1443#if EV_FORK_ENABLE 2433#if EV_FORK_ENABLE
1444 array_free (fork, EMPTY); 2434 array_free (fork, EMPTY);
1445#endif 2435#endif
2436#if EV_CLEANUP_ENABLE
2437 array_free (cleanup, EMPTY);
2438#endif
1446 array_free (prepare, EMPTY); 2439 array_free (prepare, EMPTY);
1447 array_free (check, EMPTY); 2440 array_free (check, EMPTY);
1448#if EV_ASYNC_ENABLE 2441#if EV_ASYNC_ENABLE
1449 array_free (async, EMPTY); 2442 array_free (async, EMPTY);
1450#endif 2443#endif
1451 2444
1452 backend = 0; 2445 backend = 0;
2446
2447#if EV_MULTIPLICITY
2448 if (ev_is_default_loop (EV_A))
2449#endif
2450 ev_default_loop_ptr = 0;
2451#if EV_MULTIPLICITY
2452 else
2453 ev_free (EV_A);
2454#endif
1453} 2455}
1454 2456
1455#if EV_USE_INOTIFY 2457#if EV_USE_INOTIFY
1456void inline_size infy_fork (EV_P); 2458inline_size void infy_fork (EV_P);
1457#endif 2459#endif
1458 2460
1459void inline_size 2461inline_size void
1460loop_fork (EV_P) 2462loop_fork (EV_P)
1461{ 2463{
1462#if EV_USE_PORT 2464#if EV_USE_PORT
1463 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2465 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1464#endif 2466#endif
… …
1470#endif 2472#endif
1471#if EV_USE_INOTIFY 2473#if EV_USE_INOTIFY
1472 infy_fork (EV_A); 2474 infy_fork (EV_A);
1473#endif 2475#endif
1474 2476
1475 if (ev_is_active (&pipeev)) 2477 if (ev_is_active (&pipe_w))
1476 { 2478 {
1477 /* this "locks" the handlers against writing to the pipe */ 2479 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1478 /* while we modify the fd vars */
1479 gotsig = 1;
1480#if EV_ASYNC_ENABLE
1481 gotasync = 1;
1482#endif
1483 2480
1484 ev_ref (EV_A); 2481 ev_ref (EV_A);
1485 ev_io_stop (EV_A_ &pipeev); 2482 ev_io_stop (EV_A_ &pipe_w);
1486 2483
1487#if EV_USE_EVENTFD 2484#if EV_USE_EVENTFD
1488 if (evfd >= 0) 2485 if (evfd >= 0)
1489 close (evfd); 2486 close (evfd);
1490#endif 2487#endif
1491 2488
1492 if (evpipe [0] >= 0) 2489 if (evpipe [0] >= 0)
1493 { 2490 {
1494 close (evpipe [0]); 2491 EV_WIN32_CLOSE_FD (evpipe [0]);
1495 close (evpipe [1]); 2492 EV_WIN32_CLOSE_FD (evpipe [1]);
1496 } 2493 }
1497 2494
2495#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1498 evpipe_init (EV_A); 2496 evpipe_init (EV_A);
1499 /* now iterate over everything, in case we missed something */ 2497 /* now iterate over everything, in case we missed something */
1500 pipecb (EV_A_ &pipeev, EV_READ); 2498 pipecb (EV_A_ &pipe_w, EV_READ);
2499#endif
1501 } 2500 }
1502 2501
1503 postfork = 0; 2502 postfork = 0;
1504} 2503}
1505 2504
1506#if EV_MULTIPLICITY 2505#if EV_MULTIPLICITY
1507 2506
1508struct ev_loop * 2507struct ev_loop * ecb_cold
1509ev_loop_new (unsigned int flags) 2508ev_loop_new (unsigned int flags) EV_THROW
1510{ 2509{
1511 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2510 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1512 2511
1513 memset (loop, 0, sizeof (struct ev_loop)); 2512 memset (EV_A, 0, sizeof (struct ev_loop));
1514
1515 loop_init (EV_A_ flags); 2513 loop_init (EV_A_ flags);
1516 2514
1517 if (ev_backend (EV_A)) 2515 if (ev_backend (EV_A))
1518 return loop; 2516 return EV_A;
1519 2517
2518 ev_free (EV_A);
1520 return 0; 2519 return 0;
1521} 2520}
1522 2521
1523void 2522#endif /* multiplicity */
1524ev_loop_destroy (EV_P)
1525{
1526 loop_destroy (EV_A);
1527 ev_free (loop);
1528}
1529
1530void
1531ev_loop_fork (EV_P)
1532{
1533 postfork = 1; /* must be in line with ev_default_fork */
1534}
1535 2523
1536#if EV_VERIFY 2524#if EV_VERIFY
1537static void noinline 2525static void noinline ecb_cold
1538verify_watcher (EV_P_ W w) 2526verify_watcher (EV_P_ W w)
1539{ 2527{
1540 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2528 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1541 2529
1542 if (w->pending) 2530 if (w->pending)
1543 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2531 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1544} 2532}
1545 2533
1546static void noinline 2534static void noinline ecb_cold
1547verify_heap (EV_P_ ANHE *heap, int N) 2535verify_heap (EV_P_ ANHE *heap, int N)
1548{ 2536{
1549 int i; 2537 int i;
1550 2538
1551 for (i = HEAP0; i < N + HEAP0; ++i) 2539 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1556 2544
1557 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2545 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1558 } 2546 }
1559} 2547}
1560 2548
1561static void noinline 2549static void noinline ecb_cold
1562array_verify (EV_P_ W *ws, int cnt) 2550array_verify (EV_P_ W *ws, int cnt)
1563{ 2551{
1564 while (cnt--) 2552 while (cnt--)
1565 { 2553 {
1566 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2554 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1567 verify_watcher (EV_A_ ws [cnt]); 2555 verify_watcher (EV_A_ ws [cnt]);
1568 } 2556 }
1569} 2557}
1570#endif 2558#endif
1571 2559
1572void 2560#if EV_FEATURE_API
1573ev_loop_verify (EV_P) 2561void ecb_cold
2562ev_verify (EV_P) EV_THROW
1574{ 2563{
1575#if EV_VERIFY 2564#if EV_VERIFY
1576 int i; 2565 int i;
1577 WL w; 2566 WL w, w2;
1578 2567
1579 assert (activecnt >= -1); 2568 assert (activecnt >= -1);
1580 2569
1581 assert (fdchangemax >= fdchangecnt); 2570 assert (fdchangemax >= fdchangecnt);
1582 for (i = 0; i < fdchangecnt; ++i) 2571 for (i = 0; i < fdchangecnt; ++i)
1583 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2572 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1584 2573
1585 assert (anfdmax >= 0); 2574 assert (anfdmax >= 0);
1586 for (i = 0; i < anfdmax; ++i) 2575 for (i = 0; i < anfdmax; ++i)
2576 {
2577 int j = 0;
2578
1587 for (w = anfds [i].head; w; w = w->next) 2579 for (w = w2 = anfds [i].head; w; w = w->next)
1588 { 2580 {
1589 verify_watcher (EV_A_ (W)w); 2581 verify_watcher (EV_A_ (W)w);
2582
2583 if (j++ & 1)
2584 {
2585 assert (("libev: io watcher list contains a loop", w != w2));
2586 w2 = w2->next;
2587 }
2588
1590 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2589 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1591 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2590 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1592 } 2591 }
2592 }
1593 2593
1594 assert (timermax >= timercnt); 2594 assert (timermax >= timercnt);
1595 verify_heap (EV_A_ timers, timercnt); 2595 verify_heap (EV_A_ timers, timercnt);
1596 2596
1597#if EV_PERIODIC_ENABLE 2597#if EV_PERIODIC_ENABLE
… …
1612#if EV_FORK_ENABLE 2612#if EV_FORK_ENABLE
1613 assert (forkmax >= forkcnt); 2613 assert (forkmax >= forkcnt);
1614 array_verify (EV_A_ (W *)forks, forkcnt); 2614 array_verify (EV_A_ (W *)forks, forkcnt);
1615#endif 2615#endif
1616 2616
2617#if EV_CLEANUP_ENABLE
2618 assert (cleanupmax >= cleanupcnt);
2619 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2620#endif
2621
1617#if EV_ASYNC_ENABLE 2622#if EV_ASYNC_ENABLE
1618 assert (asyncmax >= asynccnt); 2623 assert (asyncmax >= asynccnt);
1619 array_verify (EV_A_ (W *)asyncs, asynccnt); 2624 array_verify (EV_A_ (W *)asyncs, asynccnt);
1620#endif 2625#endif
1621 2626
2627#if EV_PREPARE_ENABLE
1622 assert (preparemax >= preparecnt); 2628 assert (preparemax >= preparecnt);
1623 array_verify (EV_A_ (W *)prepares, preparecnt); 2629 array_verify (EV_A_ (W *)prepares, preparecnt);
2630#endif
1624 2631
2632#if EV_CHECK_ENABLE
1625 assert (checkmax >= checkcnt); 2633 assert (checkmax >= checkcnt);
1626 array_verify (EV_A_ (W *)checks, checkcnt); 2634 array_verify (EV_A_ (W *)checks, checkcnt);
2635#endif
1627 2636
1628# if 0 2637# if 0
2638#if EV_CHILD_ENABLE
1629 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2639 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1630 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2640 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2641#endif
1631# endif 2642# endif
1632#endif 2643#endif
1633} 2644}
1634 2645#endif
1635#endif /* multiplicity */
1636 2646
1637#if EV_MULTIPLICITY 2647#if EV_MULTIPLICITY
1638struct ev_loop * 2648struct ev_loop * ecb_cold
1639ev_default_loop_init (unsigned int flags)
1640#else 2649#else
1641int 2650int
2651#endif
1642ev_default_loop (unsigned int flags) 2652ev_default_loop (unsigned int flags) EV_THROW
1643#endif
1644{ 2653{
1645 if (!ev_default_loop_ptr) 2654 if (!ev_default_loop_ptr)
1646 { 2655 {
1647#if EV_MULTIPLICITY 2656#if EV_MULTIPLICITY
1648 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2657 EV_P = ev_default_loop_ptr = &default_loop_struct;
1649#else 2658#else
1650 ev_default_loop_ptr = 1; 2659 ev_default_loop_ptr = 1;
1651#endif 2660#endif
1652 2661
1653 loop_init (EV_A_ flags); 2662 loop_init (EV_A_ flags);
1654 2663
1655 if (ev_backend (EV_A)) 2664 if (ev_backend (EV_A))
1656 { 2665 {
1657#ifndef _WIN32 2666#if EV_CHILD_ENABLE
1658 ev_signal_init (&childev, childcb, SIGCHLD); 2667 ev_signal_init (&childev, childcb, SIGCHLD);
1659 ev_set_priority (&childev, EV_MAXPRI); 2668 ev_set_priority (&childev, EV_MAXPRI);
1660 ev_signal_start (EV_A_ &childev); 2669 ev_signal_start (EV_A_ &childev);
1661 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2670 ev_unref (EV_A); /* child watcher should not keep loop alive */
1662#endif 2671#endif
… …
1667 2676
1668 return ev_default_loop_ptr; 2677 return ev_default_loop_ptr;
1669} 2678}
1670 2679
1671void 2680void
1672ev_default_destroy (void) 2681ev_loop_fork (EV_P) EV_THROW
1673{ 2682{
1674#if EV_MULTIPLICITY
1675 struct ev_loop *loop = ev_default_loop_ptr;
1676#endif
1677
1678 ev_default_loop_ptr = 0;
1679
1680#ifndef _WIN32
1681 ev_ref (EV_A); /* child watcher */
1682 ev_signal_stop (EV_A_ &childev);
1683#endif
1684
1685 loop_destroy (EV_A);
1686}
1687
1688void
1689ev_default_fork (void)
1690{
1691#if EV_MULTIPLICITY
1692 struct ev_loop *loop = ev_default_loop_ptr;
1693#endif
1694
1695 postfork = 1; /* must be in line with ev_loop_fork */ 2683 postfork = 1; /* must be in line with ev_default_fork */
1696} 2684}
1697 2685
1698/*****************************************************************************/ 2686/*****************************************************************************/
1699 2687
1700void 2688void
1701ev_invoke (EV_P_ void *w, int revents) 2689ev_invoke (EV_P_ void *w, int revents)
1702{ 2690{
1703 EV_CB_INVOKE ((W)w, revents); 2691 EV_CB_INVOKE ((W)w, revents);
1704} 2692}
1705 2693
1706void inline_speed 2694unsigned int
1707call_pending (EV_P) 2695ev_pending_count (EV_P) EV_THROW
1708{ 2696{
1709 int pri; 2697 int pri;
2698 unsigned int count = 0;
1710 2699
1711 for (pri = NUMPRI; pri--; ) 2700 for (pri = NUMPRI; pri--; )
2701 count += pendingcnt [pri];
2702
2703 return count;
2704}
2705
2706void noinline
2707ev_invoke_pending (EV_P)
2708{
2709 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
1712 while (pendingcnt [pri]) 2710 while (pendingcnt [pendingpri])
1713 { 2711 {
1714 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2712 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1715 2713
1716 if (expect_true (p->w))
1717 {
1718 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1719
1720 p->w->pending = 0; 2714 p->w->pending = 0;
1721 EV_CB_INVOKE (p->w, p->events); 2715 EV_CB_INVOKE (p->w, p->events);
1722 EV_FREQUENT_CHECK; 2716 EV_FREQUENT_CHECK;
1723 }
1724 } 2717 }
1725} 2718}
1726 2719
1727#if EV_IDLE_ENABLE 2720#if EV_IDLE_ENABLE
1728void inline_size 2721/* make idle watchers pending. this handles the "call-idle */
2722/* only when higher priorities are idle" logic */
2723inline_size void
1729idle_reify (EV_P) 2724idle_reify (EV_P)
1730{ 2725{
1731 if (expect_false (idleall)) 2726 if (expect_false (idleall))
1732 { 2727 {
1733 int pri; 2728 int pri;
… …
1745 } 2740 }
1746 } 2741 }
1747} 2742}
1748#endif 2743#endif
1749 2744
1750void inline_size 2745/* make timers pending */
2746inline_size void
1751timers_reify (EV_P) 2747timers_reify (EV_P)
1752{ 2748{
1753 EV_FREQUENT_CHECK; 2749 EV_FREQUENT_CHECK;
1754 2750
1755 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2751 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1756 { 2752 {
1757 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2753 do
1758
1759 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1760
1761 /* first reschedule or stop timer */
1762 if (w->repeat)
1763 { 2754 {
2755 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2756
2757 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2758
2759 /* first reschedule or stop timer */
2760 if (w->repeat)
2761 {
1764 ev_at (w) += w->repeat; 2762 ev_at (w) += w->repeat;
1765 if (ev_at (w) < mn_now) 2763 if (ev_at (w) < mn_now)
1766 ev_at (w) = mn_now; 2764 ev_at (w) = mn_now;
1767 2765
1768 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2766 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1769 2767
1770 ANHE_at_cache (timers [HEAP0]); 2768 ANHE_at_cache (timers [HEAP0]);
1771 downheap (timers, timercnt, HEAP0); 2769 downheap (timers, timercnt, HEAP0);
2770 }
2771 else
2772 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2773
2774 EV_FREQUENT_CHECK;
2775 feed_reverse (EV_A_ (W)w);
1772 } 2776 }
1773 else 2777 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1774 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1775 2778
1776 EV_FREQUENT_CHECK; 2779 feed_reverse_done (EV_A_ EV_TIMER);
1777 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1778 } 2780 }
1779} 2781}
1780 2782
1781#if EV_PERIODIC_ENABLE 2783#if EV_PERIODIC_ENABLE
1782void inline_size 2784
2785static void noinline
2786periodic_recalc (EV_P_ ev_periodic *w)
2787{
2788 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2789 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2790
2791 /* the above almost always errs on the low side */
2792 while (at <= ev_rt_now)
2793 {
2794 ev_tstamp nat = at + w->interval;
2795
2796 /* when resolution fails us, we use ev_rt_now */
2797 if (expect_false (nat == at))
2798 {
2799 at = ev_rt_now;
2800 break;
2801 }
2802
2803 at = nat;
2804 }
2805
2806 ev_at (w) = at;
2807}
2808
2809/* make periodics pending */
2810inline_size void
1783periodics_reify (EV_P) 2811periodics_reify (EV_P)
1784{ 2812{
1785 EV_FREQUENT_CHECK; 2813 EV_FREQUENT_CHECK;
1786 2814
1787 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2815 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1788 { 2816 {
1789 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2817 do
1790
1791 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
1792
1793 /* first reschedule or stop timer */
1794 if (w->reschedule_cb)
1795 { 2818 {
2819 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2820
2821 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2822
2823 /* first reschedule or stop timer */
2824 if (w->reschedule_cb)
2825 {
1796 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2826 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1797 2827
1798 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2828 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1799 2829
1800 ANHE_at_cache (periodics [HEAP0]); 2830 ANHE_at_cache (periodics [HEAP0]);
1801 downheap (periodics, periodiccnt, HEAP0); 2831 downheap (periodics, periodiccnt, HEAP0);
2832 }
2833 else if (w->interval)
2834 {
2835 periodic_recalc (EV_A_ w);
2836 ANHE_at_cache (periodics [HEAP0]);
2837 downheap (periodics, periodiccnt, HEAP0);
2838 }
2839 else
2840 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2841
2842 EV_FREQUENT_CHECK;
2843 feed_reverse (EV_A_ (W)w);
1802 } 2844 }
1803 else if (w->interval) 2845 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1804 {
1805 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1806 /* if next trigger time is not sufficiently in the future, put it there */
1807 /* this might happen because of floating point inexactness */
1808 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1809 {
1810 ev_at (w) += w->interval;
1811 2846
1812 /* if interval is unreasonably low we might still have a time in the past */
1813 /* so correct this. this will make the periodic very inexact, but the user */
1814 /* has effectively asked to get triggered more often than possible */
1815 if (ev_at (w) < ev_rt_now)
1816 ev_at (w) = ev_rt_now;
1817 }
1818
1819 ANHE_at_cache (periodics [HEAP0]);
1820 downheap (periodics, periodiccnt, HEAP0);
1821 }
1822 else
1823 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1824
1825 EV_FREQUENT_CHECK;
1826 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2847 feed_reverse_done (EV_A_ EV_PERIODIC);
1827 } 2848 }
1828} 2849}
1829 2850
2851/* simply recalculate all periodics */
2852/* TODO: maybe ensure that at least one event happens when jumping forward? */
1830static void noinline 2853static void noinline ecb_cold
1831periodics_reschedule (EV_P) 2854periodics_reschedule (EV_P)
1832{ 2855{
1833 int i; 2856 int i;
1834 2857
1835 /* adjust periodics after time jump */ 2858 /* adjust periodics after time jump */
… …
1838 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2861 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1839 2862
1840 if (w->reschedule_cb) 2863 if (w->reschedule_cb)
1841 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2864 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1842 else if (w->interval) 2865 else if (w->interval)
1843 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2866 periodic_recalc (EV_A_ w);
1844 2867
1845 ANHE_at_cache (periodics [i]); 2868 ANHE_at_cache (periodics [i]);
1846 } 2869 }
1847 2870
1848 reheap (periodics, periodiccnt); 2871 reheap (periodics, periodiccnt);
1849} 2872}
1850#endif 2873#endif
1851 2874
1852void inline_speed 2875/* adjust all timers by a given offset */
2876static void noinline ecb_cold
2877timers_reschedule (EV_P_ ev_tstamp adjust)
2878{
2879 int i;
2880
2881 for (i = 0; i < timercnt; ++i)
2882 {
2883 ANHE *he = timers + i + HEAP0;
2884 ANHE_w (*he)->at += adjust;
2885 ANHE_at_cache (*he);
2886 }
2887}
2888
2889/* fetch new monotonic and realtime times from the kernel */
2890/* also detect if there was a timejump, and act accordingly */
2891inline_speed void
1853time_update (EV_P_ ev_tstamp max_block) 2892time_update (EV_P_ ev_tstamp max_block)
1854{ 2893{
1855 int i;
1856
1857#if EV_USE_MONOTONIC 2894#if EV_USE_MONOTONIC
1858 if (expect_true (have_monotonic)) 2895 if (expect_true (have_monotonic))
1859 { 2896 {
2897 int i;
1860 ev_tstamp odiff = rtmn_diff; 2898 ev_tstamp odiff = rtmn_diff;
1861 2899
1862 mn_now = get_clock (); 2900 mn_now = get_clock ();
1863 2901
1864 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2902 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1880 * doesn't hurt either as we only do this on time-jumps or 2918 * doesn't hurt either as we only do this on time-jumps or
1881 * in the unlikely event of having been preempted here. 2919 * in the unlikely event of having been preempted here.
1882 */ 2920 */
1883 for (i = 4; --i; ) 2921 for (i = 4; --i; )
1884 { 2922 {
2923 ev_tstamp diff;
1885 rtmn_diff = ev_rt_now - mn_now; 2924 rtmn_diff = ev_rt_now - mn_now;
1886 2925
2926 diff = odiff - rtmn_diff;
2927
1887 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2928 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1888 return; /* all is well */ 2929 return; /* all is well */
1889 2930
1890 ev_rt_now = ev_time (); 2931 ev_rt_now = ev_time ();
1891 mn_now = get_clock (); 2932 mn_now = get_clock ();
1892 now_floor = mn_now; 2933 now_floor = mn_now;
1893 } 2934 }
1894 2935
2936 /* no timer adjustment, as the monotonic clock doesn't jump */
2937 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1895# if EV_PERIODIC_ENABLE 2938# if EV_PERIODIC_ENABLE
1896 periodics_reschedule (EV_A); 2939 periodics_reschedule (EV_A);
1897# endif 2940# endif
1898 /* no timer adjustment, as the monotonic clock doesn't jump */
1899 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1900 } 2941 }
1901 else 2942 else
1902#endif 2943#endif
1903 { 2944 {
1904 ev_rt_now = ev_time (); 2945 ev_rt_now = ev_time ();
1905 2946
1906 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2947 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1907 { 2948 {
2949 /* adjust timers. this is easy, as the offset is the same for all of them */
2950 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1908#if EV_PERIODIC_ENABLE 2951#if EV_PERIODIC_ENABLE
1909 periodics_reschedule (EV_A); 2952 periodics_reschedule (EV_A);
1910#endif 2953#endif
1911 /* adjust timers. this is easy, as the offset is the same for all of them */
1912 for (i = 0; i < timercnt; ++i)
1913 {
1914 ANHE *he = timers + i + HEAP0;
1915 ANHE_w (*he)->at += ev_rt_now - mn_now;
1916 ANHE_at_cache (*he);
1917 }
1918 } 2954 }
1919 2955
1920 mn_now = ev_rt_now; 2956 mn_now = ev_rt_now;
1921 } 2957 }
1922} 2958}
1923 2959
1924void 2960int
1925ev_ref (EV_P)
1926{
1927 ++activecnt;
1928}
1929
1930void
1931ev_unref (EV_P)
1932{
1933 --activecnt;
1934}
1935
1936void
1937ev_now_update (EV_P)
1938{
1939 time_update (EV_A_ 1e100);
1940}
1941
1942static int loop_done;
1943
1944void
1945ev_loop (EV_P_ int flags) 2961ev_run (EV_P_ int flags)
1946{ 2962{
2963#if EV_FEATURE_API
2964 ++loop_depth;
2965#endif
2966
2967 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2968
1947 loop_done = EVUNLOOP_CANCEL; 2969 loop_done = EVBREAK_CANCEL;
1948 2970
1949 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2971 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1950 2972
1951 do 2973 do
1952 { 2974 {
1953#if EV_VERIFY >= 2 2975#if EV_VERIFY >= 2
1954 ev_loop_verify (EV_A); 2976 ev_verify (EV_A);
1955#endif 2977#endif
1956 2978
1957#ifndef _WIN32 2979#ifndef _WIN32
1958 if (expect_false (curpid)) /* penalise the forking check even more */ 2980 if (expect_false (curpid)) /* penalise the forking check even more */
1959 if (expect_false (getpid () != curpid)) 2981 if (expect_false (getpid () != curpid))
… …
1967 /* we might have forked, so queue fork handlers */ 2989 /* we might have forked, so queue fork handlers */
1968 if (expect_false (postfork)) 2990 if (expect_false (postfork))
1969 if (forkcnt) 2991 if (forkcnt)
1970 { 2992 {
1971 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2993 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1972 call_pending (EV_A); 2994 EV_INVOKE_PENDING;
1973 } 2995 }
1974#endif 2996#endif
1975 2997
2998#if EV_PREPARE_ENABLE
1976 /* queue prepare watchers (and execute them) */ 2999 /* queue prepare watchers (and execute them) */
1977 if (expect_false (preparecnt)) 3000 if (expect_false (preparecnt))
1978 { 3001 {
1979 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3002 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1980 call_pending (EV_A); 3003 EV_INVOKE_PENDING;
1981 } 3004 }
3005#endif
1982 3006
1983 if (expect_false (!activecnt)) 3007 if (expect_false (loop_done))
1984 break; 3008 break;
1985 3009
1986 /* we might have forked, so reify kernel state if necessary */ 3010 /* we might have forked, so reify kernel state if necessary */
1987 if (expect_false (postfork)) 3011 if (expect_false (postfork))
1988 loop_fork (EV_A); 3012 loop_fork (EV_A);
… …
1993 /* calculate blocking time */ 3017 /* calculate blocking time */
1994 { 3018 {
1995 ev_tstamp waittime = 0.; 3019 ev_tstamp waittime = 0.;
1996 ev_tstamp sleeptime = 0.; 3020 ev_tstamp sleeptime = 0.;
1997 3021
3022 /* remember old timestamp for io_blocktime calculation */
3023 ev_tstamp prev_mn_now = mn_now;
3024
3025 /* update time to cancel out callback processing overhead */
3026 time_update (EV_A_ 1e100);
3027
3028 /* from now on, we want a pipe-wake-up */
3029 pipe_write_wanted = 1;
3030
3031 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3032
1998 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3033 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1999 { 3034 {
2000 /* update time to cancel out callback processing overhead */
2001 time_update (EV_A_ 1e100);
2002
2003 waittime = MAX_BLOCKTIME; 3035 waittime = MAX_BLOCKTIME;
2004 3036
2005 if (timercnt) 3037 if (timercnt)
2006 { 3038 {
2007 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3039 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2008 if (waittime > to) waittime = to; 3040 if (waittime > to) waittime = to;
2009 } 3041 }
2010 3042
2011#if EV_PERIODIC_ENABLE 3043#if EV_PERIODIC_ENABLE
2012 if (periodiccnt) 3044 if (periodiccnt)
2013 { 3045 {
2014 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3046 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2015 if (waittime > to) waittime = to; 3047 if (waittime > to) waittime = to;
2016 } 3048 }
2017#endif 3049#endif
2018 3050
3051 /* don't let timeouts decrease the waittime below timeout_blocktime */
2019 if (expect_false (waittime < timeout_blocktime)) 3052 if (expect_false (waittime < timeout_blocktime))
2020 waittime = timeout_blocktime; 3053 waittime = timeout_blocktime;
2021 3054
2022 sleeptime = waittime - backend_fudge; 3055 /* at this point, we NEED to wait, so we have to ensure */
3056 /* to pass a minimum nonzero value to the backend */
3057 if (expect_false (waittime < backend_mintime))
3058 waittime = backend_mintime;
2023 3059
3060 /* extra check because io_blocktime is commonly 0 */
2024 if (expect_true (sleeptime > io_blocktime)) 3061 if (expect_false (io_blocktime))
2025 sleeptime = io_blocktime;
2026
2027 if (sleeptime)
2028 { 3062 {
3063 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3064
3065 if (sleeptime > waittime - backend_mintime)
3066 sleeptime = waittime - backend_mintime;
3067
3068 if (expect_true (sleeptime > 0.))
3069 {
2029 ev_sleep (sleeptime); 3070 ev_sleep (sleeptime);
2030 waittime -= sleeptime; 3071 waittime -= sleeptime;
3072 }
2031 } 3073 }
2032 } 3074 }
2033 3075
3076#if EV_FEATURE_API
2034 ++loop_count; 3077 ++loop_count;
3078#endif
3079 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2035 backend_poll (EV_A_ waittime); 3080 backend_poll (EV_A_ waittime);
3081 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3082
3083 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3084
3085 if (pipe_write_skipped)
3086 {
3087 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3088 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3089 }
3090
2036 3091
2037 /* update ev_rt_now, do magic */ 3092 /* update ev_rt_now, do magic */
2038 time_update (EV_A_ waittime + sleeptime); 3093 time_update (EV_A_ waittime + sleeptime);
2039 } 3094 }
2040 3095
… …
2047#if EV_IDLE_ENABLE 3102#if EV_IDLE_ENABLE
2048 /* queue idle watchers unless other events are pending */ 3103 /* queue idle watchers unless other events are pending */
2049 idle_reify (EV_A); 3104 idle_reify (EV_A);
2050#endif 3105#endif
2051 3106
3107#if EV_CHECK_ENABLE
2052 /* queue check watchers, to be executed first */ 3108 /* queue check watchers, to be executed first */
2053 if (expect_false (checkcnt)) 3109 if (expect_false (checkcnt))
2054 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3110 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3111#endif
2055 3112
2056 call_pending (EV_A); 3113 EV_INVOKE_PENDING;
2057 } 3114 }
2058 while (expect_true ( 3115 while (expect_true (
2059 activecnt 3116 activecnt
2060 && !loop_done 3117 && !loop_done
2061 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3118 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2062 )); 3119 ));
2063 3120
2064 if (loop_done == EVUNLOOP_ONE) 3121 if (loop_done == EVBREAK_ONE)
2065 loop_done = EVUNLOOP_CANCEL; 3122 loop_done = EVBREAK_CANCEL;
3123
3124#if EV_FEATURE_API
3125 --loop_depth;
3126#endif
3127
3128 return activecnt;
2066} 3129}
2067 3130
2068void 3131void
2069ev_unloop (EV_P_ int how) 3132ev_break (EV_P_ int how) EV_THROW
2070{ 3133{
2071 loop_done = how; 3134 loop_done = how;
2072} 3135}
2073 3136
3137void
3138ev_ref (EV_P) EV_THROW
3139{
3140 ++activecnt;
3141}
3142
3143void
3144ev_unref (EV_P) EV_THROW
3145{
3146 --activecnt;
3147}
3148
3149void
3150ev_now_update (EV_P) EV_THROW
3151{
3152 time_update (EV_A_ 1e100);
3153}
3154
3155void
3156ev_suspend (EV_P) EV_THROW
3157{
3158 ev_now_update (EV_A);
3159}
3160
3161void
3162ev_resume (EV_P) EV_THROW
3163{
3164 ev_tstamp mn_prev = mn_now;
3165
3166 ev_now_update (EV_A);
3167 timers_reschedule (EV_A_ mn_now - mn_prev);
3168#if EV_PERIODIC_ENABLE
3169 /* TODO: really do this? */
3170 periodics_reschedule (EV_A);
3171#endif
3172}
3173
2074/*****************************************************************************/ 3174/*****************************************************************************/
3175/* singly-linked list management, used when the expected list length is short */
2075 3176
2076void inline_size 3177inline_size void
2077wlist_add (WL *head, WL elem) 3178wlist_add (WL *head, WL elem)
2078{ 3179{
2079 elem->next = *head; 3180 elem->next = *head;
2080 *head = elem; 3181 *head = elem;
2081} 3182}
2082 3183
2083void inline_size 3184inline_size void
2084wlist_del (WL *head, WL elem) 3185wlist_del (WL *head, WL elem)
2085{ 3186{
2086 while (*head) 3187 while (*head)
2087 { 3188 {
2088 if (*head == elem) 3189 if (expect_true (*head == elem))
2089 { 3190 {
2090 *head = elem->next; 3191 *head = elem->next;
2091 return; 3192 break;
2092 } 3193 }
2093 3194
2094 head = &(*head)->next; 3195 head = &(*head)->next;
2095 } 3196 }
2096} 3197}
2097 3198
2098void inline_speed 3199/* internal, faster, version of ev_clear_pending */
3200inline_speed void
2099clear_pending (EV_P_ W w) 3201clear_pending (EV_P_ W w)
2100{ 3202{
2101 if (w->pending) 3203 if (w->pending)
2102 { 3204 {
2103 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3205 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2104 w->pending = 0; 3206 w->pending = 0;
2105 } 3207 }
2106} 3208}
2107 3209
2108int 3210int
2109ev_clear_pending (EV_P_ void *w) 3211ev_clear_pending (EV_P_ void *w) EV_THROW
2110{ 3212{
2111 W w_ = (W)w; 3213 W w_ = (W)w;
2112 int pending = w_->pending; 3214 int pending = w_->pending;
2113 3215
2114 if (expect_true (pending)) 3216 if (expect_true (pending))
2115 { 3217 {
2116 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3218 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3219 p->w = (W)&pending_w;
2117 w_->pending = 0; 3220 w_->pending = 0;
2118 p->w = 0;
2119 return p->events; 3221 return p->events;
2120 } 3222 }
2121 else 3223 else
2122 return 0; 3224 return 0;
2123} 3225}
2124 3226
2125void inline_size 3227inline_size void
2126pri_adjust (EV_P_ W w) 3228pri_adjust (EV_P_ W w)
2127{ 3229{
2128 int pri = w->priority; 3230 int pri = ev_priority (w);
2129 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3231 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2130 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3232 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2131 w->priority = pri; 3233 ev_set_priority (w, pri);
2132} 3234}
2133 3235
2134void inline_speed 3236inline_speed void
2135ev_start (EV_P_ W w, int active) 3237ev_start (EV_P_ W w, int active)
2136{ 3238{
2137 pri_adjust (EV_A_ w); 3239 pri_adjust (EV_A_ w);
2138 w->active = active; 3240 w->active = active;
2139 ev_ref (EV_A); 3241 ev_ref (EV_A);
2140} 3242}
2141 3243
2142void inline_size 3244inline_size void
2143ev_stop (EV_P_ W w) 3245ev_stop (EV_P_ W w)
2144{ 3246{
2145 ev_unref (EV_A); 3247 ev_unref (EV_A);
2146 w->active = 0; 3248 w->active = 0;
2147} 3249}
2148 3250
2149/*****************************************************************************/ 3251/*****************************************************************************/
2150 3252
2151void noinline 3253void noinline
2152ev_io_start (EV_P_ ev_io *w) 3254ev_io_start (EV_P_ ev_io *w) EV_THROW
2153{ 3255{
2154 int fd = w->fd; 3256 int fd = w->fd;
2155 3257
2156 if (expect_false (ev_is_active (w))) 3258 if (expect_false (ev_is_active (w)))
2157 return; 3259 return;
2158 3260
2159 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3261 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2160 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); 3262 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2161 3263
2162 EV_FREQUENT_CHECK; 3264 EV_FREQUENT_CHECK;
2163 3265
2164 ev_start (EV_A_ (W)w, 1); 3266 ev_start (EV_A_ (W)w, 1);
2165 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3267 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2166 wlist_add (&anfds[fd].head, (WL)w); 3268 wlist_add (&anfds[fd].head, (WL)w);
2167 3269
3270 /* common bug, apparently */
3271 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3272
2168 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 3273 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2169 w->events &= ~EV_IOFDSET; 3274 w->events &= ~EV__IOFDSET;
2170 3275
2171 EV_FREQUENT_CHECK; 3276 EV_FREQUENT_CHECK;
2172} 3277}
2173 3278
2174void noinline 3279void noinline
2175ev_io_stop (EV_P_ ev_io *w) 3280ev_io_stop (EV_P_ ev_io *w) EV_THROW
2176{ 3281{
2177 clear_pending (EV_A_ (W)w); 3282 clear_pending (EV_A_ (W)w);
2178 if (expect_false (!ev_is_active (w))) 3283 if (expect_false (!ev_is_active (w)))
2179 return; 3284 return;
2180 3285
… …
2183 EV_FREQUENT_CHECK; 3288 EV_FREQUENT_CHECK;
2184 3289
2185 wlist_del (&anfds[w->fd].head, (WL)w); 3290 wlist_del (&anfds[w->fd].head, (WL)w);
2186 ev_stop (EV_A_ (W)w); 3291 ev_stop (EV_A_ (W)w);
2187 3292
2188 fd_change (EV_A_ w->fd, 1); 3293 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2189 3294
2190 EV_FREQUENT_CHECK; 3295 EV_FREQUENT_CHECK;
2191} 3296}
2192 3297
2193void noinline 3298void noinline
2194ev_timer_start (EV_P_ ev_timer *w) 3299ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2195{ 3300{
2196 if (expect_false (ev_is_active (w))) 3301 if (expect_false (ev_is_active (w)))
2197 return; 3302 return;
2198 3303
2199 ev_at (w) += mn_now; 3304 ev_at (w) += mn_now;
… …
2213 3318
2214 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3319 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2215} 3320}
2216 3321
2217void noinline 3322void noinline
2218ev_timer_stop (EV_P_ ev_timer *w) 3323ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2219{ 3324{
2220 clear_pending (EV_A_ (W)w); 3325 clear_pending (EV_A_ (W)w);
2221 if (expect_false (!ev_is_active (w))) 3326 if (expect_false (!ev_is_active (w)))
2222 return; 3327 return;
2223 3328
… …
2235 timers [active] = timers [timercnt + HEAP0]; 3340 timers [active] = timers [timercnt + HEAP0];
2236 adjustheap (timers, timercnt, active); 3341 adjustheap (timers, timercnt, active);
2237 } 3342 }
2238 } 3343 }
2239 3344
2240 EV_FREQUENT_CHECK;
2241
2242 ev_at (w) -= mn_now; 3345 ev_at (w) -= mn_now;
2243 3346
2244 ev_stop (EV_A_ (W)w); 3347 ev_stop (EV_A_ (W)w);
3348
3349 EV_FREQUENT_CHECK;
2245} 3350}
2246 3351
2247void noinline 3352void noinline
2248ev_timer_again (EV_P_ ev_timer *w) 3353ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2249{ 3354{
2250 EV_FREQUENT_CHECK; 3355 EV_FREQUENT_CHECK;
3356
3357 clear_pending (EV_A_ (W)w);
2251 3358
2252 if (ev_is_active (w)) 3359 if (ev_is_active (w))
2253 { 3360 {
2254 if (w->repeat) 3361 if (w->repeat)
2255 { 3362 {
… …
2267 } 3374 }
2268 3375
2269 EV_FREQUENT_CHECK; 3376 EV_FREQUENT_CHECK;
2270} 3377}
2271 3378
3379ev_tstamp
3380ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3381{
3382 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3383}
3384
2272#if EV_PERIODIC_ENABLE 3385#if EV_PERIODIC_ENABLE
2273void noinline 3386void noinline
2274ev_periodic_start (EV_P_ ev_periodic *w) 3387ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2275{ 3388{
2276 if (expect_false (ev_is_active (w))) 3389 if (expect_false (ev_is_active (w)))
2277 return; 3390 return;
2278 3391
2279 if (w->reschedule_cb) 3392 if (w->reschedule_cb)
2280 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3393 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2281 else if (w->interval) 3394 else if (w->interval)
2282 { 3395 {
2283 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3396 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2284 /* this formula differs from the one in periodic_reify because we do not always round up */ 3397 periodic_recalc (EV_A_ w);
2285 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2286 } 3398 }
2287 else 3399 else
2288 ev_at (w) = w->offset; 3400 ev_at (w) = w->offset;
2289 3401
2290 EV_FREQUENT_CHECK; 3402 EV_FREQUENT_CHECK;
… …
2300 3412
2301 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3413 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2302} 3414}
2303 3415
2304void noinline 3416void noinline
2305ev_periodic_stop (EV_P_ ev_periodic *w) 3417ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2306{ 3418{
2307 clear_pending (EV_A_ (W)w); 3419 clear_pending (EV_A_ (W)w);
2308 if (expect_false (!ev_is_active (w))) 3420 if (expect_false (!ev_is_active (w)))
2309 return; 3421 return;
2310 3422
… …
2322 periodics [active] = periodics [periodiccnt + HEAP0]; 3434 periodics [active] = periodics [periodiccnt + HEAP0];
2323 adjustheap (periodics, periodiccnt, active); 3435 adjustheap (periodics, periodiccnt, active);
2324 } 3436 }
2325 } 3437 }
2326 3438
2327 EV_FREQUENT_CHECK;
2328
2329 ev_stop (EV_A_ (W)w); 3439 ev_stop (EV_A_ (W)w);
3440
3441 EV_FREQUENT_CHECK;
2330} 3442}
2331 3443
2332void noinline 3444void noinline
2333ev_periodic_again (EV_P_ ev_periodic *w) 3445ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2334{ 3446{
2335 /* TODO: use adjustheap and recalculation */ 3447 /* TODO: use adjustheap and recalculation */
2336 ev_periodic_stop (EV_A_ w); 3448 ev_periodic_stop (EV_A_ w);
2337 ev_periodic_start (EV_A_ w); 3449 ev_periodic_start (EV_A_ w);
2338} 3450}
… …
2340 3452
2341#ifndef SA_RESTART 3453#ifndef SA_RESTART
2342# define SA_RESTART 0 3454# define SA_RESTART 0
2343#endif 3455#endif
2344 3456
3457#if EV_SIGNAL_ENABLE
3458
2345void noinline 3459void noinline
2346ev_signal_start (EV_P_ ev_signal *w) 3460ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2347{ 3461{
2348#if EV_MULTIPLICITY
2349 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2350#endif
2351 if (expect_false (ev_is_active (w))) 3462 if (expect_false (ev_is_active (w)))
2352 return; 3463 return;
2353 3464
2354 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3465 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2355 3466
2356 evpipe_init (EV_A); 3467#if EV_MULTIPLICITY
3468 assert (("libev: a signal must not be attached to two different loops",
3469 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2357 3470
2358 EV_FREQUENT_CHECK; 3471 signals [w->signum - 1].loop = EV_A;
3472#endif
2359 3473
3474 EV_FREQUENT_CHECK;
3475
3476#if EV_USE_SIGNALFD
3477 if (sigfd == -2)
2360 { 3478 {
2361#ifndef _WIN32 3479 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2362 sigset_t full, prev; 3480 if (sigfd < 0 && errno == EINVAL)
2363 sigfillset (&full); 3481 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2364 sigprocmask (SIG_SETMASK, &full, &prev);
2365#endif
2366 3482
2367 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3483 if (sigfd >= 0)
3484 {
3485 fd_intern (sigfd); /* doing it twice will not hurt */
2368 3486
2369#ifndef _WIN32 3487 sigemptyset (&sigfd_set);
2370 sigprocmask (SIG_SETMASK, &prev, 0); 3488
2371#endif 3489 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3490 ev_set_priority (&sigfd_w, EV_MAXPRI);
3491 ev_io_start (EV_A_ &sigfd_w);
3492 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3493 }
2372 } 3494 }
3495
3496 if (sigfd >= 0)
3497 {
3498 /* TODO: check .head */
3499 sigaddset (&sigfd_set, w->signum);
3500 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3501
3502 signalfd (sigfd, &sigfd_set, 0);
3503 }
3504#endif
2373 3505
2374 ev_start (EV_A_ (W)w, 1); 3506 ev_start (EV_A_ (W)w, 1);
2375 wlist_add (&signals [w->signum - 1].head, (WL)w); 3507 wlist_add (&signals [w->signum - 1].head, (WL)w);
2376 3508
2377 if (!((WL)w)->next) 3509 if (!((WL)w)->next)
3510# if EV_USE_SIGNALFD
3511 if (sigfd < 0) /*TODO*/
3512# endif
2378 { 3513 {
2379#if _WIN32 3514# ifdef _WIN32
3515 evpipe_init (EV_A);
3516
2380 signal (w->signum, ev_sighandler); 3517 signal (w->signum, ev_sighandler);
2381#else 3518# else
2382 struct sigaction sa; 3519 struct sigaction sa;
3520
3521 evpipe_init (EV_A);
3522
2383 sa.sa_handler = ev_sighandler; 3523 sa.sa_handler = ev_sighandler;
2384 sigfillset (&sa.sa_mask); 3524 sigfillset (&sa.sa_mask);
2385 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3525 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2386 sigaction (w->signum, &sa, 0); 3526 sigaction (w->signum, &sa, 0);
3527
3528 if (origflags & EVFLAG_NOSIGMASK)
3529 {
3530 sigemptyset (&sa.sa_mask);
3531 sigaddset (&sa.sa_mask, w->signum);
3532 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3533 }
2387#endif 3534#endif
2388 } 3535 }
2389 3536
2390 EV_FREQUENT_CHECK; 3537 EV_FREQUENT_CHECK;
2391} 3538}
2392 3539
2393void noinline 3540void noinline
2394ev_signal_stop (EV_P_ ev_signal *w) 3541ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2395{ 3542{
2396 clear_pending (EV_A_ (W)w); 3543 clear_pending (EV_A_ (W)w);
2397 if (expect_false (!ev_is_active (w))) 3544 if (expect_false (!ev_is_active (w)))
2398 return; 3545 return;
2399 3546
… …
2401 3548
2402 wlist_del (&signals [w->signum - 1].head, (WL)w); 3549 wlist_del (&signals [w->signum - 1].head, (WL)w);
2403 ev_stop (EV_A_ (W)w); 3550 ev_stop (EV_A_ (W)w);
2404 3551
2405 if (!signals [w->signum - 1].head) 3552 if (!signals [w->signum - 1].head)
3553 {
3554#if EV_MULTIPLICITY
3555 signals [w->signum - 1].loop = 0; /* unattach from signal */
3556#endif
3557#if EV_USE_SIGNALFD
3558 if (sigfd >= 0)
3559 {
3560 sigset_t ss;
3561
3562 sigemptyset (&ss);
3563 sigaddset (&ss, w->signum);
3564 sigdelset (&sigfd_set, w->signum);
3565
3566 signalfd (sigfd, &sigfd_set, 0);
3567 sigprocmask (SIG_UNBLOCK, &ss, 0);
3568 }
3569 else
3570#endif
2406 signal (w->signum, SIG_DFL); 3571 signal (w->signum, SIG_DFL);
3572 }
2407 3573
2408 EV_FREQUENT_CHECK; 3574 EV_FREQUENT_CHECK;
2409} 3575}
3576
3577#endif
3578
3579#if EV_CHILD_ENABLE
2410 3580
2411void 3581void
2412ev_child_start (EV_P_ ev_child *w) 3582ev_child_start (EV_P_ ev_child *w) EV_THROW
2413{ 3583{
2414#if EV_MULTIPLICITY 3584#if EV_MULTIPLICITY
2415 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3585 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2416#endif 3586#endif
2417 if (expect_false (ev_is_active (w))) 3587 if (expect_false (ev_is_active (w)))
2418 return; 3588 return;
2419 3589
2420 EV_FREQUENT_CHECK; 3590 EV_FREQUENT_CHECK;
2421 3591
2422 ev_start (EV_A_ (W)w, 1); 3592 ev_start (EV_A_ (W)w, 1);
2423 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3593 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2424 3594
2425 EV_FREQUENT_CHECK; 3595 EV_FREQUENT_CHECK;
2426} 3596}
2427 3597
2428void 3598void
2429ev_child_stop (EV_P_ ev_child *w) 3599ev_child_stop (EV_P_ ev_child *w) EV_THROW
2430{ 3600{
2431 clear_pending (EV_A_ (W)w); 3601 clear_pending (EV_A_ (W)w);
2432 if (expect_false (!ev_is_active (w))) 3602 if (expect_false (!ev_is_active (w)))
2433 return; 3603 return;
2434 3604
2435 EV_FREQUENT_CHECK; 3605 EV_FREQUENT_CHECK;
2436 3606
2437 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3607 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2438 ev_stop (EV_A_ (W)w); 3608 ev_stop (EV_A_ (W)w);
2439 3609
2440 EV_FREQUENT_CHECK; 3610 EV_FREQUENT_CHECK;
2441} 3611}
3612
3613#endif
2442 3614
2443#if EV_STAT_ENABLE 3615#if EV_STAT_ENABLE
2444 3616
2445# ifdef _WIN32 3617# ifdef _WIN32
2446# undef lstat 3618# undef lstat
… …
2452#define MIN_STAT_INTERVAL 0.1074891 3624#define MIN_STAT_INTERVAL 0.1074891
2453 3625
2454static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3626static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2455 3627
2456#if EV_USE_INOTIFY 3628#if EV_USE_INOTIFY
2457# define EV_INOTIFY_BUFSIZE 8192 3629
3630/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3631# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2458 3632
2459static void noinline 3633static void noinline
2460infy_add (EV_P_ ev_stat *w) 3634infy_add (EV_P_ ev_stat *w)
2461{ 3635{
2462 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); 3636 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);
2463 3637
2464 if (w->wd < 0) 3638 if (w->wd >= 0)
3639 {
3640 struct statfs sfs;
3641
3642 /* now local changes will be tracked by inotify, but remote changes won't */
3643 /* unless the filesystem is known to be local, we therefore still poll */
3644 /* also do poll on <2.6.25, but with normal frequency */
3645
3646 if (!fs_2625)
3647 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3648 else if (!statfs (w->path, &sfs)
3649 && (sfs.f_type == 0x1373 /* devfs */
3650 || sfs.f_type == 0xEF53 /* ext2/3 */
3651 || sfs.f_type == 0x3153464a /* jfs */
3652 || sfs.f_type == 0x52654973 /* reiser3 */
3653 || sfs.f_type == 0x01021994 /* tempfs */
3654 || sfs.f_type == 0x58465342 /* xfs */))
3655 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3656 else
3657 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2465 { 3658 }
3659 else
3660 {
3661 /* can't use inotify, continue to stat */
2466 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3662 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2467 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2468 3663
2469 /* monitor some parent directory for speedup hints */ 3664 /* if path is not there, monitor some parent directory for speedup hints */
2470 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3665 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2471 /* but an efficiency issue only */ 3666 /* but an efficiency issue only */
2472 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3667 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2473 { 3668 {
2474 char path [4096]; 3669 char path [4096];
… …
2484 if (!pend || pend == path) 3679 if (!pend || pend == path)
2485 break; 3680 break;
2486 3681
2487 *pend = 0; 3682 *pend = 0;
2488 w->wd = inotify_add_watch (fs_fd, path, mask); 3683 w->wd = inotify_add_watch (fs_fd, path, mask);
2489 } 3684 }
2490 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3685 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2491 } 3686 }
2492 } 3687 }
2493 3688
2494 if (w->wd >= 0) 3689 if (w->wd >= 0)
2495 {
2496 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3690 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2497 3691
2498 /* now local changes will be tracked by inotify, but remote changes won't */ 3692 /* now re-arm timer, if required */
2499 /* unless the filesystem it known to be local, we therefore still poll */ 3693 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2500 /* also do poll on <2.6.25, but with normal frequency */
2501 struct statfs sfs;
2502
2503 if (fs_2625 && !statfs (w->path, &sfs))
2504 if (sfs.f_type == 0x1373 /* devfs */
2505 || sfs.f_type == 0xEF53 /* ext2/3 */
2506 || sfs.f_type == 0x3153464a /* jfs */
2507 || sfs.f_type == 0x52654973 /* reiser3 */
2508 || sfs.f_type == 0x01021994 /* tempfs */
2509 || sfs.f_type == 0x58465342 /* xfs */)
2510 return;
2511
2512 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2513 ev_timer_again (EV_A_ &w->timer); 3694 ev_timer_again (EV_A_ &w->timer);
2514 } 3695 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2515} 3696}
2516 3697
2517static void noinline 3698static void noinline
2518infy_del (EV_P_ ev_stat *w) 3699infy_del (EV_P_ ev_stat *w)
2519{ 3700{
… …
2522 3703
2523 if (wd < 0) 3704 if (wd < 0)
2524 return; 3705 return;
2525 3706
2526 w->wd = -2; 3707 w->wd = -2;
2527 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3708 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2528 wlist_del (&fs_hash [slot].head, (WL)w); 3709 wlist_del (&fs_hash [slot].head, (WL)w);
2529 3710
2530 /* remove this watcher, if others are watching it, they will rearm */ 3711 /* remove this watcher, if others are watching it, they will rearm */
2531 inotify_rm_watch (fs_fd, wd); 3712 inotify_rm_watch (fs_fd, wd);
2532} 3713}
… …
2534static void noinline 3715static void noinline
2535infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3716infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2536{ 3717{
2537 if (slot < 0) 3718 if (slot < 0)
2538 /* overflow, need to check for all hash slots */ 3719 /* overflow, need to check for all hash slots */
2539 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3720 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2540 infy_wd (EV_A_ slot, wd, ev); 3721 infy_wd (EV_A_ slot, wd, ev);
2541 else 3722 else
2542 { 3723 {
2543 WL w_; 3724 WL w_;
2544 3725
2545 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3726 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2546 { 3727 {
2547 ev_stat *w = (ev_stat *)w_; 3728 ev_stat *w = (ev_stat *)w_;
2548 w_ = w_->next; /* lets us remove this watcher and all before it */ 3729 w_ = w_->next; /* lets us remove this watcher and all before it */
2549 3730
2550 if (w->wd == wd || wd == -1) 3731 if (w->wd == wd || wd == -1)
2551 { 3732 {
2552 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3733 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2553 { 3734 {
2554 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3735 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2555 w->wd = -1; 3736 w->wd = -1;
2556 infy_add (EV_A_ w); /* re-add, no matter what */ 3737 infy_add (EV_A_ w); /* re-add, no matter what */
2557 } 3738 }
2558 3739
2559 stat_timer_cb (EV_A_ &w->timer, 0); 3740 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2564 3745
2565static void 3746static void
2566infy_cb (EV_P_ ev_io *w, int revents) 3747infy_cb (EV_P_ ev_io *w, int revents)
2567{ 3748{
2568 char buf [EV_INOTIFY_BUFSIZE]; 3749 char buf [EV_INOTIFY_BUFSIZE];
2569 struct inotify_event *ev = (struct inotify_event *)buf;
2570 int ofs; 3750 int ofs;
2571 int len = read (fs_fd, buf, sizeof (buf)); 3751 int len = read (fs_fd, buf, sizeof (buf));
2572 3752
2573 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3753 for (ofs = 0; ofs < len; )
3754 {
3755 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2574 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3756 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3757 ofs += sizeof (struct inotify_event) + ev->len;
3758 }
2575} 3759}
2576 3760
2577void inline_size 3761inline_size void ecb_cold
2578check_2625 (EV_P) 3762ev_check_2625 (EV_P)
2579{ 3763{
2580 /* kernels < 2.6.25 are borked 3764 /* kernels < 2.6.25 are borked
2581 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3765 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2582 */ 3766 */
2583 struct utsname buf; 3767 if (ev_linux_version () < 0x020619)
2584 int major, minor, micro;
2585
2586 if (uname (&buf))
2587 return; 3768 return;
2588 3769
2589 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2590 return;
2591
2592 if (major < 2
2593 || (major == 2 && minor < 6)
2594 || (major == 2 && minor == 6 && micro < 25))
2595 return;
2596
2597 fs_2625 = 1; 3770 fs_2625 = 1;
2598} 3771}
2599 3772
2600void inline_size 3773inline_size int
3774infy_newfd (void)
3775{
3776#if defined IN_CLOEXEC && defined IN_NONBLOCK
3777 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3778 if (fd >= 0)
3779 return fd;
3780#endif
3781 return inotify_init ();
3782}
3783
3784inline_size void
2601infy_init (EV_P) 3785infy_init (EV_P)
2602{ 3786{
2603 if (fs_fd != -2) 3787 if (fs_fd != -2)
2604 return; 3788 return;
2605 3789
2606 fs_fd = -1; 3790 fs_fd = -1;
2607 3791
2608 check_2625 (EV_A); 3792 ev_check_2625 (EV_A);
2609 3793
2610 fs_fd = inotify_init (); 3794 fs_fd = infy_newfd ();
2611 3795
2612 if (fs_fd >= 0) 3796 if (fs_fd >= 0)
2613 { 3797 {
3798 fd_intern (fs_fd);
2614 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3799 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2615 ev_set_priority (&fs_w, EV_MAXPRI); 3800 ev_set_priority (&fs_w, EV_MAXPRI);
2616 ev_io_start (EV_A_ &fs_w); 3801 ev_io_start (EV_A_ &fs_w);
3802 ev_unref (EV_A);
2617 } 3803 }
2618} 3804}
2619 3805
2620void inline_size 3806inline_size void
2621infy_fork (EV_P) 3807infy_fork (EV_P)
2622{ 3808{
2623 int slot; 3809 int slot;
2624 3810
2625 if (fs_fd < 0) 3811 if (fs_fd < 0)
2626 return; 3812 return;
2627 3813
3814 ev_ref (EV_A);
3815 ev_io_stop (EV_A_ &fs_w);
2628 close (fs_fd); 3816 close (fs_fd);
2629 fs_fd = inotify_init (); 3817 fs_fd = infy_newfd ();
2630 3818
3819 if (fs_fd >= 0)
3820 {
3821 fd_intern (fs_fd);
3822 ev_io_set (&fs_w, fs_fd, EV_READ);
3823 ev_io_start (EV_A_ &fs_w);
3824 ev_unref (EV_A);
3825 }
3826
2631 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3827 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2632 { 3828 {
2633 WL w_ = fs_hash [slot].head; 3829 WL w_ = fs_hash [slot].head;
2634 fs_hash [slot].head = 0; 3830 fs_hash [slot].head = 0;
2635 3831
2636 while (w_) 3832 while (w_)
… …
2641 w->wd = -1; 3837 w->wd = -1;
2642 3838
2643 if (fs_fd >= 0) 3839 if (fs_fd >= 0)
2644 infy_add (EV_A_ w); /* re-add, no matter what */ 3840 infy_add (EV_A_ w); /* re-add, no matter what */
2645 else 3841 else
3842 {
3843 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3844 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2646 ev_timer_again (EV_A_ &w->timer); 3845 ev_timer_again (EV_A_ &w->timer);
3846 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3847 }
2647 } 3848 }
2648 } 3849 }
2649} 3850}
2650 3851
2651#endif 3852#endif
… …
2655#else 3856#else
2656# define EV_LSTAT(p,b) lstat (p, b) 3857# define EV_LSTAT(p,b) lstat (p, b)
2657#endif 3858#endif
2658 3859
2659void 3860void
2660ev_stat_stat (EV_P_ ev_stat *w) 3861ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2661{ 3862{
2662 if (lstat (w->path, &w->attr) < 0) 3863 if (lstat (w->path, &w->attr) < 0)
2663 w->attr.st_nlink = 0; 3864 w->attr.st_nlink = 0;
2664 else if (!w->attr.st_nlink) 3865 else if (!w->attr.st_nlink)
2665 w->attr.st_nlink = 1; 3866 w->attr.st_nlink = 1;
… …
2668static void noinline 3869static void noinline
2669stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3870stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2670{ 3871{
2671 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3872 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2672 3873
2673 /* we copy this here each the time so that */ 3874 ev_statdata prev = w->attr;
2674 /* prev has the old value when the callback gets invoked */
2675 w->prev = w->attr;
2676 ev_stat_stat (EV_A_ w); 3875 ev_stat_stat (EV_A_ w);
2677 3876
2678 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3877 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2679 if ( 3878 if (
2680 w->prev.st_dev != w->attr.st_dev 3879 prev.st_dev != w->attr.st_dev
2681 || w->prev.st_ino != w->attr.st_ino 3880 || prev.st_ino != w->attr.st_ino
2682 || w->prev.st_mode != w->attr.st_mode 3881 || prev.st_mode != w->attr.st_mode
2683 || w->prev.st_nlink != w->attr.st_nlink 3882 || prev.st_nlink != w->attr.st_nlink
2684 || w->prev.st_uid != w->attr.st_uid 3883 || prev.st_uid != w->attr.st_uid
2685 || w->prev.st_gid != w->attr.st_gid 3884 || prev.st_gid != w->attr.st_gid
2686 || w->prev.st_rdev != w->attr.st_rdev 3885 || prev.st_rdev != w->attr.st_rdev
2687 || w->prev.st_size != w->attr.st_size 3886 || prev.st_size != w->attr.st_size
2688 || w->prev.st_atime != w->attr.st_atime 3887 || prev.st_atime != w->attr.st_atime
2689 || w->prev.st_mtime != w->attr.st_mtime 3888 || prev.st_mtime != w->attr.st_mtime
2690 || w->prev.st_ctime != w->attr.st_ctime 3889 || prev.st_ctime != w->attr.st_ctime
2691 ) { 3890 ) {
3891 /* we only update w->prev on actual differences */
3892 /* in case we test more often than invoke the callback, */
3893 /* to ensure that prev is always different to attr */
3894 w->prev = prev;
3895
2692 #if EV_USE_INOTIFY 3896 #if EV_USE_INOTIFY
2693 if (fs_fd >= 0) 3897 if (fs_fd >= 0)
2694 { 3898 {
2695 infy_del (EV_A_ w); 3899 infy_del (EV_A_ w);
2696 infy_add (EV_A_ w); 3900 infy_add (EV_A_ w);
… …
2701 ev_feed_event (EV_A_ w, EV_STAT); 3905 ev_feed_event (EV_A_ w, EV_STAT);
2702 } 3906 }
2703} 3907}
2704 3908
2705void 3909void
2706ev_stat_start (EV_P_ ev_stat *w) 3910ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2707{ 3911{
2708 if (expect_false (ev_is_active (w))) 3912 if (expect_false (ev_is_active (w)))
2709 return; 3913 return;
2710 3914
2711 ev_stat_stat (EV_A_ w); 3915 ev_stat_stat (EV_A_ w);
… …
2721 3925
2722 if (fs_fd >= 0) 3926 if (fs_fd >= 0)
2723 infy_add (EV_A_ w); 3927 infy_add (EV_A_ w);
2724 else 3928 else
2725#endif 3929#endif
3930 {
2726 ev_timer_again (EV_A_ &w->timer); 3931 ev_timer_again (EV_A_ &w->timer);
3932 ev_unref (EV_A);
3933 }
2727 3934
2728 ev_start (EV_A_ (W)w, 1); 3935 ev_start (EV_A_ (W)w, 1);
2729 3936
2730 EV_FREQUENT_CHECK; 3937 EV_FREQUENT_CHECK;
2731} 3938}
2732 3939
2733void 3940void
2734ev_stat_stop (EV_P_ ev_stat *w) 3941ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2735{ 3942{
2736 clear_pending (EV_A_ (W)w); 3943 clear_pending (EV_A_ (W)w);
2737 if (expect_false (!ev_is_active (w))) 3944 if (expect_false (!ev_is_active (w)))
2738 return; 3945 return;
2739 3946
2740 EV_FREQUENT_CHECK; 3947 EV_FREQUENT_CHECK;
2741 3948
2742#if EV_USE_INOTIFY 3949#if EV_USE_INOTIFY
2743 infy_del (EV_A_ w); 3950 infy_del (EV_A_ w);
2744#endif 3951#endif
3952
3953 if (ev_is_active (&w->timer))
3954 {
3955 ev_ref (EV_A);
2745 ev_timer_stop (EV_A_ &w->timer); 3956 ev_timer_stop (EV_A_ &w->timer);
3957 }
2746 3958
2747 ev_stop (EV_A_ (W)w); 3959 ev_stop (EV_A_ (W)w);
2748 3960
2749 EV_FREQUENT_CHECK; 3961 EV_FREQUENT_CHECK;
2750} 3962}
2751#endif 3963#endif
2752 3964
2753#if EV_IDLE_ENABLE 3965#if EV_IDLE_ENABLE
2754void 3966void
2755ev_idle_start (EV_P_ ev_idle *w) 3967ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2756{ 3968{
2757 if (expect_false (ev_is_active (w))) 3969 if (expect_false (ev_is_active (w)))
2758 return; 3970 return;
2759 3971
2760 pri_adjust (EV_A_ (W)w); 3972 pri_adjust (EV_A_ (W)w);
… …
2773 3985
2774 EV_FREQUENT_CHECK; 3986 EV_FREQUENT_CHECK;
2775} 3987}
2776 3988
2777void 3989void
2778ev_idle_stop (EV_P_ ev_idle *w) 3990ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2779{ 3991{
2780 clear_pending (EV_A_ (W)w); 3992 clear_pending (EV_A_ (W)w);
2781 if (expect_false (!ev_is_active (w))) 3993 if (expect_false (!ev_is_active (w)))
2782 return; 3994 return;
2783 3995
… …
2795 4007
2796 EV_FREQUENT_CHECK; 4008 EV_FREQUENT_CHECK;
2797} 4009}
2798#endif 4010#endif
2799 4011
4012#if EV_PREPARE_ENABLE
2800void 4013void
2801ev_prepare_start (EV_P_ ev_prepare *w) 4014ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2802{ 4015{
2803 if (expect_false (ev_is_active (w))) 4016 if (expect_false (ev_is_active (w)))
2804 return; 4017 return;
2805 4018
2806 EV_FREQUENT_CHECK; 4019 EV_FREQUENT_CHECK;
… …
2811 4024
2812 EV_FREQUENT_CHECK; 4025 EV_FREQUENT_CHECK;
2813} 4026}
2814 4027
2815void 4028void
2816ev_prepare_stop (EV_P_ ev_prepare *w) 4029ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2817{ 4030{
2818 clear_pending (EV_A_ (W)w); 4031 clear_pending (EV_A_ (W)w);
2819 if (expect_false (!ev_is_active (w))) 4032 if (expect_false (!ev_is_active (w)))
2820 return; 4033 return;
2821 4034
… …
2830 4043
2831 ev_stop (EV_A_ (W)w); 4044 ev_stop (EV_A_ (W)w);
2832 4045
2833 EV_FREQUENT_CHECK; 4046 EV_FREQUENT_CHECK;
2834} 4047}
4048#endif
2835 4049
4050#if EV_CHECK_ENABLE
2836void 4051void
2837ev_check_start (EV_P_ ev_check *w) 4052ev_check_start (EV_P_ ev_check *w) EV_THROW
2838{ 4053{
2839 if (expect_false (ev_is_active (w))) 4054 if (expect_false (ev_is_active (w)))
2840 return; 4055 return;
2841 4056
2842 EV_FREQUENT_CHECK; 4057 EV_FREQUENT_CHECK;
… …
2847 4062
2848 EV_FREQUENT_CHECK; 4063 EV_FREQUENT_CHECK;
2849} 4064}
2850 4065
2851void 4066void
2852ev_check_stop (EV_P_ ev_check *w) 4067ev_check_stop (EV_P_ ev_check *w) EV_THROW
2853{ 4068{
2854 clear_pending (EV_A_ (W)w); 4069 clear_pending (EV_A_ (W)w);
2855 if (expect_false (!ev_is_active (w))) 4070 if (expect_false (!ev_is_active (w)))
2856 return; 4071 return;
2857 4072
… …
2866 4081
2867 ev_stop (EV_A_ (W)w); 4082 ev_stop (EV_A_ (W)w);
2868 4083
2869 EV_FREQUENT_CHECK; 4084 EV_FREQUENT_CHECK;
2870} 4085}
4086#endif
2871 4087
2872#if EV_EMBED_ENABLE 4088#if EV_EMBED_ENABLE
2873void noinline 4089void noinline
2874ev_embed_sweep (EV_P_ ev_embed *w) 4090ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2875{ 4091{
2876 ev_loop (w->other, EVLOOP_NONBLOCK); 4092 ev_run (w->other, EVRUN_NOWAIT);
2877} 4093}
2878 4094
2879static void 4095static void
2880embed_io_cb (EV_P_ ev_io *io, int revents) 4096embed_io_cb (EV_P_ ev_io *io, int revents)
2881{ 4097{
2882 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4098 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2883 4099
2884 if (ev_cb (w)) 4100 if (ev_cb (w))
2885 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4101 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2886 else 4102 else
2887 ev_loop (w->other, EVLOOP_NONBLOCK); 4103 ev_run (w->other, EVRUN_NOWAIT);
2888} 4104}
2889 4105
2890static void 4106static void
2891embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4107embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2892{ 4108{
2893 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4109 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2894 4110
2895 { 4111 {
2896 struct ev_loop *loop = w->other; 4112 EV_P = w->other;
2897 4113
2898 while (fdchangecnt) 4114 while (fdchangecnt)
2899 { 4115 {
2900 fd_reify (EV_A); 4116 fd_reify (EV_A);
2901 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4117 ev_run (EV_A_ EVRUN_NOWAIT);
2902 } 4118 }
2903 } 4119 }
2904} 4120}
2905 4121
2906static void 4122static void
… …
2909 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4125 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2910 4126
2911 ev_embed_stop (EV_A_ w); 4127 ev_embed_stop (EV_A_ w);
2912 4128
2913 { 4129 {
2914 struct ev_loop *loop = w->other; 4130 EV_P = w->other;
2915 4131
2916 ev_loop_fork (EV_A); 4132 ev_loop_fork (EV_A);
2917 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4133 ev_run (EV_A_ EVRUN_NOWAIT);
2918 } 4134 }
2919 4135
2920 ev_embed_start (EV_A_ w); 4136 ev_embed_start (EV_A_ w);
2921} 4137}
2922 4138
… …
2927 ev_idle_stop (EV_A_ idle); 4143 ev_idle_stop (EV_A_ idle);
2928} 4144}
2929#endif 4145#endif
2930 4146
2931void 4147void
2932ev_embed_start (EV_P_ ev_embed *w) 4148ev_embed_start (EV_P_ ev_embed *w) EV_THROW
2933{ 4149{
2934 if (expect_false (ev_is_active (w))) 4150 if (expect_false (ev_is_active (w)))
2935 return; 4151 return;
2936 4152
2937 { 4153 {
2938 struct ev_loop *loop = w->other; 4154 EV_P = w->other;
2939 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4155 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2940 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4156 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2941 } 4157 }
2942 4158
2943 EV_FREQUENT_CHECK; 4159 EV_FREQUENT_CHECK;
… …
2958 4174
2959 EV_FREQUENT_CHECK; 4175 EV_FREQUENT_CHECK;
2960} 4176}
2961 4177
2962void 4178void
2963ev_embed_stop (EV_P_ ev_embed *w) 4179ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
2964{ 4180{
2965 clear_pending (EV_A_ (W)w); 4181 clear_pending (EV_A_ (W)w);
2966 if (expect_false (!ev_is_active (w))) 4182 if (expect_false (!ev_is_active (w)))
2967 return; 4183 return;
2968 4184
… …
2970 4186
2971 ev_io_stop (EV_A_ &w->io); 4187 ev_io_stop (EV_A_ &w->io);
2972 ev_prepare_stop (EV_A_ &w->prepare); 4188 ev_prepare_stop (EV_A_ &w->prepare);
2973 ev_fork_stop (EV_A_ &w->fork); 4189 ev_fork_stop (EV_A_ &w->fork);
2974 4190
4191 ev_stop (EV_A_ (W)w);
4192
2975 EV_FREQUENT_CHECK; 4193 EV_FREQUENT_CHECK;
2976} 4194}
2977#endif 4195#endif
2978 4196
2979#if EV_FORK_ENABLE 4197#if EV_FORK_ENABLE
2980void 4198void
2981ev_fork_start (EV_P_ ev_fork *w) 4199ev_fork_start (EV_P_ ev_fork *w) EV_THROW
2982{ 4200{
2983 if (expect_false (ev_is_active (w))) 4201 if (expect_false (ev_is_active (w)))
2984 return; 4202 return;
2985 4203
2986 EV_FREQUENT_CHECK; 4204 EV_FREQUENT_CHECK;
… …
2991 4209
2992 EV_FREQUENT_CHECK; 4210 EV_FREQUENT_CHECK;
2993} 4211}
2994 4212
2995void 4213void
2996ev_fork_stop (EV_P_ ev_fork *w) 4214ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
2997{ 4215{
2998 clear_pending (EV_A_ (W)w); 4216 clear_pending (EV_A_ (W)w);
2999 if (expect_false (!ev_is_active (w))) 4217 if (expect_false (!ev_is_active (w)))
3000 return; 4218 return;
3001 4219
… …
3012 4230
3013 EV_FREQUENT_CHECK; 4231 EV_FREQUENT_CHECK;
3014} 4232}
3015#endif 4233#endif
3016 4234
4235#if EV_CLEANUP_ENABLE
4236void
4237ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4238{
4239 if (expect_false (ev_is_active (w)))
4240 return;
4241
4242 EV_FREQUENT_CHECK;
4243
4244 ev_start (EV_A_ (W)w, ++cleanupcnt);
4245 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4246 cleanups [cleanupcnt - 1] = w;
4247
4248 /* cleanup watchers should never keep a refcount on the loop */
4249 ev_unref (EV_A);
4250 EV_FREQUENT_CHECK;
4251}
4252
4253void
4254ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4255{
4256 clear_pending (EV_A_ (W)w);
4257 if (expect_false (!ev_is_active (w)))
4258 return;
4259
4260 EV_FREQUENT_CHECK;
4261 ev_ref (EV_A);
4262
4263 {
4264 int active = ev_active (w);
4265
4266 cleanups [active - 1] = cleanups [--cleanupcnt];
4267 ev_active (cleanups [active - 1]) = active;
4268 }
4269
4270 ev_stop (EV_A_ (W)w);
4271
4272 EV_FREQUENT_CHECK;
4273}
4274#endif
4275
3017#if EV_ASYNC_ENABLE 4276#if EV_ASYNC_ENABLE
3018void 4277void
3019ev_async_start (EV_P_ ev_async *w) 4278ev_async_start (EV_P_ ev_async *w) EV_THROW
3020{ 4279{
3021 if (expect_false (ev_is_active (w))) 4280 if (expect_false (ev_is_active (w)))
3022 return; 4281 return;
4282
4283 w->sent = 0;
3023 4284
3024 evpipe_init (EV_A); 4285 evpipe_init (EV_A);
3025 4286
3026 EV_FREQUENT_CHECK; 4287 EV_FREQUENT_CHECK;
3027 4288
… …
3031 4292
3032 EV_FREQUENT_CHECK; 4293 EV_FREQUENT_CHECK;
3033} 4294}
3034 4295
3035void 4296void
3036ev_async_stop (EV_P_ ev_async *w) 4297ev_async_stop (EV_P_ ev_async *w) EV_THROW
3037{ 4298{
3038 clear_pending (EV_A_ (W)w); 4299 clear_pending (EV_A_ (W)w);
3039 if (expect_false (!ev_is_active (w))) 4300 if (expect_false (!ev_is_active (w)))
3040 return; 4301 return;
3041 4302
… …
3052 4313
3053 EV_FREQUENT_CHECK; 4314 EV_FREQUENT_CHECK;
3054} 4315}
3055 4316
3056void 4317void
3057ev_async_send (EV_P_ ev_async *w) 4318ev_async_send (EV_P_ ev_async *w) EV_THROW
3058{ 4319{
3059 w->sent = 1; 4320 w->sent = 1;
3060 evpipe_write (EV_A_ &gotasync); 4321 evpipe_write (EV_A_ &async_pending);
3061} 4322}
3062#endif 4323#endif
3063 4324
3064/*****************************************************************************/ 4325/*****************************************************************************/
3065 4326
… …
3099 4360
3100 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4361 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3101} 4362}
3102 4363
3103void 4364void
3104ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4365ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3105{ 4366{
3106 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4367 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3107 4368
3108 if (expect_false (!once)) 4369 if (expect_false (!once))
3109 { 4370 {
3110 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4371 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3111 return; 4372 return;
3112 } 4373 }
3113 4374
3114 once->cb = cb; 4375 once->cb = cb;
3115 once->arg = arg; 4376 once->arg = arg;
… …
3127 ev_timer_set (&once->to, timeout, 0.); 4388 ev_timer_set (&once->to, timeout, 0.);
3128 ev_timer_start (EV_A_ &once->to); 4389 ev_timer_start (EV_A_ &once->to);
3129 } 4390 }
3130} 4391}
3131 4392
4393/*****************************************************************************/
4394
4395#if EV_WALK_ENABLE
4396void ecb_cold
4397ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4398{
4399 int i, j;
4400 ev_watcher_list *wl, *wn;
4401
4402 if (types & (EV_IO | EV_EMBED))
4403 for (i = 0; i < anfdmax; ++i)
4404 for (wl = anfds [i].head; wl; )
4405 {
4406 wn = wl->next;
4407
4408#if EV_EMBED_ENABLE
4409 if (ev_cb ((ev_io *)wl) == embed_io_cb)
4410 {
4411 if (types & EV_EMBED)
4412 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
4413 }
4414 else
4415#endif
4416#if EV_USE_INOTIFY
4417 if (ev_cb ((ev_io *)wl) == infy_cb)
4418 ;
4419 else
4420#endif
4421 if ((ev_io *)wl != &pipe_w)
4422 if (types & EV_IO)
4423 cb (EV_A_ EV_IO, wl);
4424
4425 wl = wn;
4426 }
4427
4428 if (types & (EV_TIMER | EV_STAT))
4429 for (i = timercnt + HEAP0; i-- > HEAP0; )
4430#if EV_STAT_ENABLE
4431 /*TODO: timer is not always active*/
4432 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
4433 {
4434 if (types & EV_STAT)
4435 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
4436 }
4437 else
4438#endif
4439 if (types & EV_TIMER)
4440 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
4441
4442#if EV_PERIODIC_ENABLE
4443 if (types & EV_PERIODIC)
4444 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4445 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4446#endif
4447
4448#if EV_IDLE_ENABLE
4449 if (types & EV_IDLE)
4450 for (j = NUMPRI; j--; )
4451 for (i = idlecnt [j]; i--; )
4452 cb (EV_A_ EV_IDLE, idles [j][i]);
4453#endif
4454
4455#if EV_FORK_ENABLE
4456 if (types & EV_FORK)
4457 for (i = forkcnt; i--; )
4458 if (ev_cb (forks [i]) != embed_fork_cb)
4459 cb (EV_A_ EV_FORK, forks [i]);
4460#endif
4461
4462#if EV_ASYNC_ENABLE
4463 if (types & EV_ASYNC)
4464 for (i = asynccnt; i--; )
4465 cb (EV_A_ EV_ASYNC, asyncs [i]);
4466#endif
4467
4468#if EV_PREPARE_ENABLE
4469 if (types & EV_PREPARE)
4470 for (i = preparecnt; i--; )
4471# if EV_EMBED_ENABLE
4472 if (ev_cb (prepares [i]) != embed_prepare_cb)
4473# endif
4474 cb (EV_A_ EV_PREPARE, prepares [i]);
4475#endif
4476
4477#if EV_CHECK_ENABLE
4478 if (types & EV_CHECK)
4479 for (i = checkcnt; i--; )
4480 cb (EV_A_ EV_CHECK, checks [i]);
4481#endif
4482
4483#if EV_SIGNAL_ENABLE
4484 if (types & EV_SIGNAL)
4485 for (i = 0; i < EV_NSIG - 1; ++i)
4486 for (wl = signals [i].head; wl; )
4487 {
4488 wn = wl->next;
4489 cb (EV_A_ EV_SIGNAL, wl);
4490 wl = wn;
4491 }
4492#endif
4493
4494#if EV_CHILD_ENABLE
4495 if (types & EV_CHILD)
4496 for (i = (EV_PID_HASHSIZE); i--; )
4497 for (wl = childs [i]; wl; )
4498 {
4499 wn = wl->next;
4500 cb (EV_A_ EV_CHILD, wl);
4501 wl = wn;
4502 }
4503#endif
4504/* EV_STAT 0x00001000 /* stat data changed */
4505/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4506}
4507#endif
4508
3132#if EV_MULTIPLICITY 4509#if EV_MULTIPLICITY
3133 #include "ev_wrap.h" 4510 #include "ev_wrap.h"
3134#endif 4511#endif
3135 4512
3136#ifdef __cplusplus
3137}
3138#endif
3139

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