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Comparing libev/ev.c (file contents):
Revision 1.271 by root, Mon Nov 3 12:13:15 2008 UTC vs.
Revision 1.442 by root, Thu May 31 15:47:59 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 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
51 47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
53
54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME
58# define EV_USE_REALTIME 0
59# endif
60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1
62# endif
63# endif
64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0
66# endif
67
52# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
55# endif 71# endif
56# ifndef EV_USE_REALTIME 72# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 73# define EV_USE_REALTIME 0
58# endif 74# endif
59# else 75# else
60# ifndef EV_USE_MONOTONIC 76# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 77# define EV_USE_MONOTONIC 0
62# endif 78# endif
63# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
65# endif 81# endif
66# endif 82# endif
67 83
84# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
71# else 88# else
89# undef EV_USE_NANOSLEEP
72# 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
73# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
74# endif 100# endif
75 101
102# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 105# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 106# else
107# undef EV_USE_POLL
88# define EV_USE_POLL 0 108# define EV_USE_POLL 0
89# endif
90# endif 109# endif
91 110
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
95# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
98# endif 118# endif
99 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
106# endif 127# endif
107 128
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
111# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
114# endif 136# endif
115 137
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
122# endif 145# endif
123 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# 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
130# endif 163# endif
131 164
132#endif 165#endif
133 166
134#include <math.h>
135#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
136#include <fcntl.h> 169#include <fcntl.h>
137#include <stddef.h> 170#include <stddef.h>
138 171
139#include <stdio.h> 172#include <stdio.h>
140 173
141#include <assert.h> 174#include <assert.h>
142#include <errno.h> 175#include <errno.h>
143#include <sys/types.h> 176#include <sys/types.h>
144#include <time.h> 177#include <time.h>
178#include <limits.h>
145 179
146#include <signal.h> 180#include <signal.h>
147 181
148#ifdef EV_H 182#ifdef EV_H
149# include EV_H 183# include EV_H
150#else 184#else
151# 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
152#endif 197#endif
153 198
154#ifndef _WIN32 199#ifndef _WIN32
155# include <sys/time.h> 200# include <sys/time.h>
156# include <sys/wait.h> 201# include <sys/wait.h>
157# include <unistd.h> 202# include <unistd.h>
158#else 203#else
159# include <io.h> 204# include <io.h>
160# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
161# include <windows.h> 207# include <windows.h>
162# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
163# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
164# endif 210# endif
211# undef EV_AVOID_STDIO
165#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
166 221
167/* 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 */
168 223
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
255
256#ifndef EV_USE_CLOCK_SYSCALL
257# if __linux && __GLIBC__ >= 2
258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
259# else
260# define EV_USE_CLOCK_SYSCALL 0
261# endif
262#endif
263
169#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 266# define EV_USE_MONOTONIC EV_FEATURE_OS
172# else 267# else
173# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
174# endif 269# endif
175#endif 270#endif
176 271
177#ifndef EV_USE_REALTIME 272#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 273# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 274#endif
180 275
181#ifndef EV_USE_NANOSLEEP 276#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 277# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 278# define EV_USE_NANOSLEEP EV_FEATURE_OS
184# else 279# else
185# define EV_USE_NANOSLEEP 0 280# define EV_USE_NANOSLEEP 0
186# endif 281# endif
187#endif 282#endif
188 283
189#ifndef EV_USE_SELECT 284#ifndef EV_USE_SELECT
190# define EV_USE_SELECT 1 285# define EV_USE_SELECT EV_FEATURE_BACKENDS
191#endif 286#endif
192 287
193#ifndef EV_USE_POLL 288#ifndef EV_USE_POLL
194# ifdef _WIN32 289# ifdef _WIN32
195# define EV_USE_POLL 0 290# define EV_USE_POLL 0
196# else 291# else
197# define EV_USE_POLL 1 292# define EV_USE_POLL EV_FEATURE_BACKENDS
198# endif 293# endif
199#endif 294#endif
200 295
201#ifndef EV_USE_EPOLL 296#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 297# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1 298# define EV_USE_EPOLL EV_FEATURE_BACKENDS
204# else 299# else
205# define EV_USE_EPOLL 0 300# define EV_USE_EPOLL 0
206# endif 301# endif
207#endif 302#endif
208 303
… …
214# define EV_USE_PORT 0 309# define EV_USE_PORT 0
215#endif 310#endif
216 311
217#ifndef EV_USE_INOTIFY 312#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 313# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1 314# define EV_USE_INOTIFY EV_FEATURE_OS
220# else 315# else
221# define EV_USE_INOTIFY 0 316# define EV_USE_INOTIFY 0
222# endif 317# endif
223#endif 318#endif
224 319
225#ifndef EV_PID_HASHSIZE 320#ifndef EV_PID_HASHSIZE
226# if EV_MINIMAL 321# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
227# define EV_PID_HASHSIZE 1
228# else
229# define EV_PID_HASHSIZE 16
230# endif
231#endif 322#endif
232 323
233#ifndef EV_INOTIFY_HASHSIZE 324#ifndef EV_INOTIFY_HASHSIZE
234# if EV_MINIMAL 325# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
235# define EV_INOTIFY_HASHSIZE 1
236# else
237# define EV_INOTIFY_HASHSIZE 16
238# endif
239#endif 326#endif
240 327
241#ifndef EV_USE_EVENTFD 328#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 329# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1 330# define EV_USE_EVENTFD EV_FEATURE_OS
244# else 331# else
245# 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
246# endif 341# endif
247#endif 342#endif
248 343
249#if 0 /* debugging */ 344#if 0 /* debugging */
250# define EV_VERIFY 3 345# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 346# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 347# define EV_HEAP_CACHE_AT 1
253#endif 348#endif
254 349
255#ifndef EV_VERIFY 350#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL 351# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
257#endif 352#endif
258 353
259#ifndef EV_USE_4HEAP 354#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL 355# define EV_USE_4HEAP EV_FEATURE_DATA
261#endif 356#endif
262 357
263#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
264# 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
265#endif 374#endif
266 375
267/* 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
268 383
269#ifndef CLOCK_MONOTONIC 384#ifndef CLOCK_MONOTONIC
270# undef EV_USE_MONOTONIC 385# undef EV_USE_MONOTONIC
271# define EV_USE_MONOTONIC 0 386# define EV_USE_MONOTONIC 0
272#endif 387#endif
… …
280# undef EV_USE_INOTIFY 395# undef EV_USE_INOTIFY
281# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
282#endif 397#endif
283 398
284#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
285# ifndef _WIN32 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
401# if !defined _WIN32 && !defined __hpux
286# include <sys/select.h> 402# include <sys/select.h>
287# endif 403# endif
288#endif 404#endif
289 405
290#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
291# include <sys/utsname.h>
292# include <sys/statfs.h> 407# include <sys/statfs.h>
293# include <sys/inotify.h> 408# include <sys/inotify.h>
294/* 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 */
295# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
296# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
297# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
298# endif 413# endif
299#endif 414#endif
300 415
301#if EV_SELECT_IS_WINSOCKET
302# include <winsock.h>
303#endif
304
305#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
306/* 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 */
307# include <stdint.h> 418# include <stdint.h>
308# ifdef __cplusplus 419# ifndef EFD_NONBLOCK
309extern "C" { 420# define EFD_NONBLOCK O_NONBLOCK
310# endif 421# endif
311int eventfd (unsigned int initval, int flags); 422# ifndef EFD_CLOEXEC
312# ifdef __cplusplus 423# ifdef O_CLOEXEC
313} 424# define EFD_CLOEXEC O_CLOEXEC
425# else
426# define EFD_CLOEXEC 02000000
427# endif
314# 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};
315#endif 452#endif
316 453
317/**/ 454/**/
318 455
319#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
320# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
321#else 458#else
322# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
323#endif 460#endif
324 461
325/* 462/*
326 * This is used to avoid floating point rounding problems. 463 * This is used to work around floating point rounding problems.
327 * It is added to ev_rt_now when scheduling periodics
328 * to ensure progress, time-wise, even when rounding
329 * errors are against us.
330 * This value is good at least till the year 4000. 464 * This value is good at least till the year 4000.
331 * Better solutions welcome.
332 */ 465 */
333#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 */
334 468
335#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) */
336#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) */
337/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
338 471
472#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
473#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
474
475/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
476/* ECB.H BEGIN */
477/*
478 * libecb - http://software.schmorp.de/pkg/libecb
479 *
480 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
481 * Copyright (©) 2011 Emanuele Giaquinta
482 * All rights reserved.
483 *
484 * Redistribution and use in source and binary forms, with or without modifica-
485 * tion, are permitted provided that the following conditions are met:
486 *
487 * 1. Redistributions of source code must retain the above copyright notice,
488 * this list of conditions and the following disclaimer.
489 *
490 * 2. Redistributions in binary form must reproduce the above copyright
491 * notice, this list of conditions and the following disclaimer in the
492 * documentation and/or other materials provided with the distribution.
493 *
494 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
495 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
496 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
497 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
498 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
499 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
500 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
503 * OF THE POSSIBILITY OF SUCH DAMAGE.
504 */
505
506#ifndef ECB_H
507#define ECB_H
508
509/* 16 bits major, 16 bits minor */
510#define ECB_VERSION 0x00010001
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
339#if __GNUC__ >= 4 519 #if __GNUC__
340# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
341# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
526 #ifdef _WIN64
527 #define ECB_PTRSIZE 8
528 typedef uint64_t uintptr_t;
529 typedef int64_t intptr_t;
530 #else
531 #define ECB_PTRSIZE 4
532 typedef uint32_t uintptr_t;
533 typedef int32_t intptr_t;
534 #endif
535 typedef intptr_t ptrdiff_t;
342#else 536#else
343# define expect(expr,value) (expr) 537 #include <inttypes.h>
344# define noinline 538 #if UINTMAX_MAX > 0xffffffffU
345# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 539 #define ECB_PTRSIZE 8
346# define inline 540 #else
541 #define ECB_PTRSIZE 4
542 #endif
347# endif 543#endif
544
545/* many compilers define _GNUC_ to some versions but then only implement
546 * what their idiot authors think are the "more important" extensions,
547 * causing enormous grief in return for some better fake benchmark numbers.
548 * or so.
549 * we try to detect these and simply assume they are not gcc - if they have
550 * an issue with that they should have done it right in the first place.
551 */
552#ifndef ECB_GCC_VERSION
553 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
554 #define ECB_GCC_VERSION(major,minor) 0
555 #else
556 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
348#endif 557 #endif
558#endif
349 559
560#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
561#define ECB_C99 (__STDC_VERSION__ >= 199901L)
562#define ECB_C11 (__STDC_VERSION__ >= 201112L)
563#define ECB_CPP (__cplusplus+0)
564#define ECB_CPP11 (__cplusplus >= 201103L)
565
566/*****************************************************************************/
567
568/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
569/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
570
571#if ECB_NO_THREADS
572 #define ECB_NO_SMP 1
573#endif
574
575#if ECB_NO_SMP
576 #define ECB_MEMORY_FENCE do { } while (0)
577#endif
578
579#ifndef ECB_MEMORY_FENCE
580 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
581 #if __i386 || __i386__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
583 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
584 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
585 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
586 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
587 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
588 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
589 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
590 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
591 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
592 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
593 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
594 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
595 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
596 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
597 #elif __sparc || __sparc__
598 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
599 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
600 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
601 #elif defined __s390__ || defined __s390x__
602 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
603 #elif defined __mips__
604 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
605 #elif defined __alpha__
606 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
607 #elif defined __hppa__
608 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
609 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
610 #elif defined __ia64__
611 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
612 #endif
613 #endif
614#endif
615
616#ifndef ECB_MEMORY_FENCE
617 #if ECB_GCC_VERSION(4,7)
618 /* see comment below (stdatomic.h) about the C11 memory model. */
619 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
620 #elif defined __clang && __has_feature (cxx_atomic)
621 /* see comment below (stdatomic.h) about the C11 memory model. */
622 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
623 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
624 #define ECB_MEMORY_FENCE __sync_synchronize ()
625 #elif _MSC_VER >= 1400 /* VC++ 2005 */
626 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
627 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
628 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
629 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
630 #elif defined _WIN32
631 #include <WinNT.h>
632 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
633 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
634 #include <mbarrier.h>
635 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
636 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
637 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
638 #elif __xlC__
639 #define ECB_MEMORY_FENCE __sync ()
640 #endif
641#endif
642
643#ifndef ECB_MEMORY_FENCE
644 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
645 /* we assume that these memory fences work on all variables/all memory accesses, */
646 /* not just C11 atomics and atomic accesses */
647 #include <stdatomic.h>
648 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
649 /* any fence other than seq_cst, which isn't very efficient for us. */
650 /* Why that is, we don't know - either the C11 memory model is quite useless */
651 /* for most usages, or gcc and clang have a bug */
652 /* I *currently* lean towards the latter, and inefficiently implement */
653 /* all three of ecb's fences as a seq_cst fence */
654 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
655 #endif
656#endif
657
658#ifndef ECB_MEMORY_FENCE
659 #if !ECB_AVOID_PTHREADS
660 /*
661 * if you get undefined symbol references to pthread_mutex_lock,
662 * or failure to find pthread.h, then you should implement
663 * the ECB_MEMORY_FENCE operations for your cpu/compiler
664 * OR provide pthread.h and link against the posix thread library
665 * of your system.
666 */
667 #include <pthread.h>
668 #define ECB_NEEDS_PTHREADS 1
669 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
670
671 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
672 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
673 #endif
674#endif
675
676#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
677 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
678#endif
679
680#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
681 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
682#endif
683
684/*****************************************************************************/
685
686#if __cplusplus
687 #define ecb_inline static inline
688#elif ECB_GCC_VERSION(2,5)
689 #define ecb_inline static __inline__
690#elif ECB_C99
691 #define ecb_inline static inline
692#else
693 #define ecb_inline static
694#endif
695
696#if ECB_GCC_VERSION(3,3)
697 #define ecb_restrict __restrict__
698#elif ECB_C99
699 #define ecb_restrict restrict
700#else
701 #define ecb_restrict
702#endif
703
704typedef int ecb_bool;
705
706#define ECB_CONCAT_(a, b) a ## b
707#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
708#define ECB_STRINGIFY_(a) # a
709#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
710
711#define ecb_function_ ecb_inline
712
713#if ECB_GCC_VERSION(3,1)
714 #define ecb_attribute(attrlist) __attribute__(attrlist)
715 #define ecb_is_constant(expr) __builtin_constant_p (expr)
716 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
717 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
718#else
719 #define ecb_attribute(attrlist)
720 #define ecb_is_constant(expr) 0
721 #define ecb_expect(expr,value) (expr)
722 #define ecb_prefetch(addr,rw,locality)
723#endif
724
725/* no emulation for ecb_decltype */
726#if ECB_GCC_VERSION(4,5)
727 #define ecb_decltype(x) __decltype(x)
728#elif ECB_GCC_VERSION(3,0)
729 #define ecb_decltype(x) __typeof(x)
730#endif
731
732#define ecb_noinline ecb_attribute ((__noinline__))
733#define ecb_unused ecb_attribute ((__unused__))
734#define ecb_const ecb_attribute ((__const__))
735#define ecb_pure ecb_attribute ((__pure__))
736
737#if ECB_C11
738 #define ecb_noreturn _Noreturn
739#else
740 #define ecb_noreturn ecb_attribute ((__noreturn__))
741#endif
742
743#if ECB_GCC_VERSION(4,3)
744 #define ecb_artificial ecb_attribute ((__artificial__))
745 #define ecb_hot ecb_attribute ((__hot__))
746 #define ecb_cold ecb_attribute ((__cold__))
747#else
748 #define ecb_artificial
749 #define ecb_hot
750 #define ecb_cold
751#endif
752
753/* put around conditional expressions if you are very sure that the */
754/* expression is mostly true or mostly false. note that these return */
755/* booleans, not the expression. */
350#define expect_false(expr) expect ((expr) != 0, 0) 756#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
351#define expect_true(expr) expect ((expr) != 0, 1) 757#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
758/* for compatibility to the rest of the world */
759#define ecb_likely(expr) ecb_expect_true (expr)
760#define ecb_unlikely(expr) ecb_expect_false (expr)
761
762/* count trailing zero bits and count # of one bits */
763#if ECB_GCC_VERSION(3,4)
764 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
765 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
766 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
767 #define ecb_ctz32(x) __builtin_ctz (x)
768 #define ecb_ctz64(x) __builtin_ctzll (x)
769 #define ecb_popcount32(x) __builtin_popcount (x)
770 /* no popcountll */
771#else
772 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
773 ecb_function_ int
774 ecb_ctz32 (uint32_t x)
775 {
776 int r = 0;
777
778 x &= ~x + 1; /* this isolates the lowest bit */
779
780#if ECB_branchless_on_i386
781 r += !!(x & 0xaaaaaaaa) << 0;
782 r += !!(x & 0xcccccccc) << 1;
783 r += !!(x & 0xf0f0f0f0) << 2;
784 r += !!(x & 0xff00ff00) << 3;
785 r += !!(x & 0xffff0000) << 4;
786#else
787 if (x & 0xaaaaaaaa) r += 1;
788 if (x & 0xcccccccc) r += 2;
789 if (x & 0xf0f0f0f0) r += 4;
790 if (x & 0xff00ff00) r += 8;
791 if (x & 0xffff0000) r += 16;
792#endif
793
794 return r;
795 }
796
797 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
798 ecb_function_ int
799 ecb_ctz64 (uint64_t x)
800 {
801 int shift = x & 0xffffffffU ? 0 : 32;
802 return ecb_ctz32 (x >> shift) + shift;
803 }
804
805 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
806 ecb_function_ int
807 ecb_popcount32 (uint32_t x)
808 {
809 x -= (x >> 1) & 0x55555555;
810 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
811 x = ((x >> 4) + x) & 0x0f0f0f0f;
812 x *= 0x01010101;
813
814 return x >> 24;
815 }
816
817 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
818 ecb_function_ int ecb_ld32 (uint32_t x)
819 {
820 int r = 0;
821
822 if (x >> 16) { x >>= 16; r += 16; }
823 if (x >> 8) { x >>= 8; r += 8; }
824 if (x >> 4) { x >>= 4; r += 4; }
825 if (x >> 2) { x >>= 2; r += 2; }
826 if (x >> 1) { r += 1; }
827
828 return r;
829 }
830
831 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
832 ecb_function_ int ecb_ld64 (uint64_t x)
833 {
834 int r = 0;
835
836 if (x >> 32) { x >>= 32; r += 32; }
837
838 return r + ecb_ld32 (x);
839 }
840#endif
841
842ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
843ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
844ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
845ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
846
847ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
848ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
849{
850 return ( (x * 0x0802U & 0x22110U)
851 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
852}
853
854ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
855ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
856{
857 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
858 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
859 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
860 x = ( x >> 8 ) | ( x << 8);
861
862 return x;
863}
864
865ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
866ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
867{
868 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
869 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
870 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
871 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
872 x = ( x >> 16 ) | ( x << 16);
873
874 return x;
875}
876
877/* popcount64 is only available on 64 bit cpus as gcc builtin */
878/* so for this version we are lazy */
879ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
880ecb_function_ int
881ecb_popcount64 (uint64_t x)
882{
883 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
884}
885
886ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
887ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
888ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
889ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
890ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
891ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
892ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
893ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
894
895ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
896ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
897ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
898ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
899ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
900ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
901ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
902ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
903
904#if ECB_GCC_VERSION(4,3)
905 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
906 #define ecb_bswap32(x) __builtin_bswap32 (x)
907 #define ecb_bswap64(x) __builtin_bswap64 (x)
908#else
909 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
910 ecb_function_ uint16_t
911 ecb_bswap16 (uint16_t x)
912 {
913 return ecb_rotl16 (x, 8);
914 }
915
916 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
917 ecb_function_ uint32_t
918 ecb_bswap32 (uint32_t x)
919 {
920 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
921 }
922
923 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
924 ecb_function_ uint64_t
925 ecb_bswap64 (uint64_t x)
926 {
927 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
928 }
929#endif
930
931#if ECB_GCC_VERSION(4,5)
932 #define ecb_unreachable() __builtin_unreachable ()
933#else
934 /* this seems to work fine, but gcc always emits a warning for it :/ */
935 ecb_inline void ecb_unreachable (void) ecb_noreturn;
936 ecb_inline void ecb_unreachable (void) { }
937#endif
938
939/* try to tell the compiler that some condition is definitely true */
940#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
941
942ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
943ecb_inline unsigned char
944ecb_byteorder_helper (void)
945{
946 const uint32_t u = 0x11223344;
947 return *(unsigned char *)&u;
948}
949
950ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
951ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
952ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
953ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
954
955#if ECB_GCC_VERSION(3,0) || ECB_C99
956 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
957#else
958 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
959#endif
960
961#if __cplusplus
962 template<typename T>
963 static inline T ecb_div_rd (T val, T div)
964 {
965 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
966 }
967 template<typename T>
968 static inline T ecb_div_ru (T val, T div)
969 {
970 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
971 }
972#else
973 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
974 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
975#endif
976
977#if ecb_cplusplus_does_not_suck
978 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
979 template<typename T, int N>
980 static inline int ecb_array_length (const T (&arr)[N])
981 {
982 return N;
983 }
984#else
985 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
986#endif
987
988#endif
989
990/* ECB.H END */
991
992#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
993/* if your architecture doesn't need memory fences, e.g. because it is
994 * single-cpu/core, or if you use libev in a project that doesn't use libev
995 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
996 * libev, in which cases the memory fences become nops.
997 * alternatively, you can remove this #error and link against libpthread,
998 * which will then provide the memory fences.
999 */
1000# error "memory fences not defined for your architecture, please report"
1001#endif
1002
1003#ifndef ECB_MEMORY_FENCE
1004# define ECB_MEMORY_FENCE do { } while (0)
1005# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1006# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1007#endif
1008
1009#define expect_false(cond) ecb_expect_false (cond)
1010#define expect_true(cond) ecb_expect_true (cond)
1011#define noinline ecb_noinline
1012
352#define inline_size static inline 1013#define inline_size ecb_inline
353 1014
354#if EV_MINIMAL 1015#if EV_FEATURE_CODE
1016# define inline_speed ecb_inline
1017#else
355# define inline_speed static noinline 1018# define inline_speed static noinline
1019#endif
1020
1021#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
1022
1023#if EV_MINPRI == EV_MAXPRI
1024# define ABSPRI(w) (((W)w), 0)
356#else 1025#else
357# define inline_speed static inline
358#endif
359
360#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
361#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1026# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1027#endif
362 1028
363#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1029#define EMPTY /* required for microsofts broken pseudo-c compiler */
364#define EMPTY2(a,b) /* used to suppress some warnings */ 1030#define EMPTY2(a,b) /* used to suppress some warnings */
365 1031
366typedef ev_watcher *W; 1032typedef ev_watcher *W;
… …
368typedef ev_watcher_time *WT; 1034typedef ev_watcher_time *WT;
369 1035
370#define ev_active(w) ((W)(w))->active 1036#define ev_active(w) ((W)(w))->active
371#define ev_at(w) ((WT)(w))->at 1037#define ev_at(w) ((WT)(w))->at
372 1038
1039#if EV_USE_REALTIME
1040/* sig_atomic_t is used to avoid per-thread variables or locking but still */
1041/* giving it a reasonably high chance of working on typical architectures */
1042static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
1043#endif
1044
373#if EV_USE_MONOTONIC 1045#if EV_USE_MONOTONIC
374/* sig_atomic_t is used to avoid per-thread variables or locking but still */
375/* giving it a reasonably high chance of working on typical architetcures */
376static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 1046static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
1047#endif
1048
1049#ifndef EV_FD_TO_WIN32_HANDLE
1050# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
1051#endif
1052#ifndef EV_WIN32_HANDLE_TO_FD
1053# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
1054#endif
1055#ifndef EV_WIN32_CLOSE_FD
1056# define EV_WIN32_CLOSE_FD(fd) close (fd)
377#endif 1057#endif
378 1058
379#ifdef _WIN32 1059#ifdef _WIN32
380# include "ev_win32.c" 1060# include "ev_win32.c"
381#endif 1061#endif
382 1062
383/*****************************************************************************/ 1063/*****************************************************************************/
384 1064
1065/* define a suitable floor function (only used by periodics atm) */
1066
1067#if EV_USE_FLOOR
1068# include <math.h>
1069# define ev_floor(v) floor (v)
1070#else
1071
1072#include <float.h>
1073
1074/* a floor() replacement function, should be independent of ev_tstamp type */
1075static ev_tstamp noinline
1076ev_floor (ev_tstamp v)
1077{
1078 /* the choice of shift factor is not terribly important */
1079#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1080 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1081#else
1082 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1083#endif
1084
1085 /* argument too large for an unsigned long? */
1086 if (expect_false (v >= shift))
1087 {
1088 ev_tstamp f;
1089
1090 if (v == v - 1.)
1091 return v; /* very large number */
1092
1093 f = shift * ev_floor (v * (1. / shift));
1094 return f + ev_floor (v - f);
1095 }
1096
1097 /* special treatment for negative args? */
1098 if (expect_false (v < 0.))
1099 {
1100 ev_tstamp f = -ev_floor (-v);
1101
1102 return f - (f == v ? 0 : 1);
1103 }
1104
1105 /* fits into an unsigned long */
1106 return (unsigned long)v;
1107}
1108
1109#endif
1110
1111/*****************************************************************************/
1112
1113#ifdef __linux
1114# include <sys/utsname.h>
1115#endif
1116
1117static unsigned int noinline ecb_cold
1118ev_linux_version (void)
1119{
1120#ifdef __linux
1121 unsigned int v = 0;
1122 struct utsname buf;
1123 int i;
1124 char *p = buf.release;
1125
1126 if (uname (&buf))
1127 return 0;
1128
1129 for (i = 3+1; --i; )
1130 {
1131 unsigned int c = 0;
1132
1133 for (;;)
1134 {
1135 if (*p >= '0' && *p <= '9')
1136 c = c * 10 + *p++ - '0';
1137 else
1138 {
1139 p += *p == '.';
1140 break;
1141 }
1142 }
1143
1144 v = (v << 8) | c;
1145 }
1146
1147 return v;
1148#else
1149 return 0;
1150#endif
1151}
1152
1153/*****************************************************************************/
1154
1155#if EV_AVOID_STDIO
1156static void noinline ecb_cold
1157ev_printerr (const char *msg)
1158{
1159 write (STDERR_FILENO, msg, strlen (msg));
1160}
1161#endif
1162
385static void (*syserr_cb)(const char *msg); 1163static void (*syserr_cb)(const char *msg) EV_THROW;
386 1164
387void 1165void ecb_cold
388ev_set_syserr_cb (void (*cb)(const char *msg)) 1166ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
389{ 1167{
390 syserr_cb = cb; 1168 syserr_cb = cb;
391} 1169}
392 1170
393static void noinline 1171static void noinline ecb_cold
394ev_syserr (const char *msg) 1172ev_syserr (const char *msg)
395{ 1173{
396 if (!msg) 1174 if (!msg)
397 msg = "(libev) system error"; 1175 msg = "(libev) system error";
398 1176
399 if (syserr_cb) 1177 if (syserr_cb)
400 syserr_cb (msg); 1178 syserr_cb (msg);
401 else 1179 else
402 { 1180 {
1181#if EV_AVOID_STDIO
1182 ev_printerr (msg);
1183 ev_printerr (": ");
1184 ev_printerr (strerror (errno));
1185 ev_printerr ("\n");
1186#else
403 perror (msg); 1187 perror (msg);
1188#endif
404 abort (); 1189 abort ();
405 } 1190 }
406} 1191}
407 1192
408static void * 1193static void *
409ev_realloc_emul (void *ptr, long size) 1194ev_realloc_emul (void *ptr, long size) EV_THROW
410{ 1195{
1196#if __GLIBC__
1197 return realloc (ptr, size);
1198#else
411 /* some systems, notably openbsd and darwin, fail to properly 1199 /* some systems, notably openbsd and darwin, fail to properly
412 * implement realloc (x, 0) (as required by both ansi c-98 and 1200 * implement realloc (x, 0) (as required by both ansi c-89 and
413 * the single unix specification, so work around them here. 1201 * the single unix specification, so work around them here.
414 */ 1202 */
415 1203
416 if (size) 1204 if (size)
417 return realloc (ptr, size); 1205 return realloc (ptr, size);
418 1206
419 free (ptr); 1207 free (ptr);
420 return 0; 1208 return 0;
1209#endif
421} 1210}
422 1211
423static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1212static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
424 1213
425void 1214void ecb_cold
426ev_set_allocator (void *(*cb)(void *ptr, long size)) 1215ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
427{ 1216{
428 alloc = cb; 1217 alloc = cb;
429} 1218}
430 1219
431inline_speed void * 1220inline_speed void *
… …
433{ 1222{
434 ptr = alloc (ptr, size); 1223 ptr = alloc (ptr, size);
435 1224
436 if (!ptr && size) 1225 if (!ptr && size)
437 { 1226 {
1227#if EV_AVOID_STDIO
1228 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1229#else
438 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1230 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1231#endif
439 abort (); 1232 abort ();
440 } 1233 }
441 1234
442 return ptr; 1235 return ptr;
443} 1236}
… …
445#define ev_malloc(size) ev_realloc (0, (size)) 1238#define ev_malloc(size) ev_realloc (0, (size))
446#define ev_free(ptr) ev_realloc ((ptr), 0) 1239#define ev_free(ptr) ev_realloc ((ptr), 0)
447 1240
448/*****************************************************************************/ 1241/*****************************************************************************/
449 1242
1243/* set in reify when reification needed */
1244#define EV_ANFD_REIFY 1
1245
1246/* file descriptor info structure */
450typedef struct 1247typedef struct
451{ 1248{
452 WL head; 1249 WL head;
453 unsigned char events; 1250 unsigned char events; /* the events watched for */
454 unsigned char reify; 1251 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
455 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1252 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
456 unsigned char unused; 1253 unsigned char unused;
457#if EV_USE_EPOLL 1254#if EV_USE_EPOLL
458 unsigned int egen; /* generation counter to counter epoll bugs */ 1255 unsigned int egen; /* generation counter to counter epoll bugs */
459#endif 1256#endif
460#if EV_SELECT_IS_WINSOCKET 1257#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
461 SOCKET handle; 1258 SOCKET handle;
462#endif 1259#endif
1260#if EV_USE_IOCP
1261 OVERLAPPED or, ow;
1262#endif
463} ANFD; 1263} ANFD;
464 1264
1265/* stores the pending event set for a given watcher */
465typedef struct 1266typedef struct
466{ 1267{
467 W w; 1268 W w;
468 int events; 1269 int events; /* the pending event set for the given watcher */
469} ANPENDING; 1270} ANPENDING;
470 1271
471#if EV_USE_INOTIFY 1272#if EV_USE_INOTIFY
472/* hash table entry per inotify-id */ 1273/* hash table entry per inotify-id */
473typedef struct 1274typedef struct
… …
476} ANFS; 1277} ANFS;
477#endif 1278#endif
478 1279
479/* Heap Entry */ 1280/* Heap Entry */
480#if EV_HEAP_CACHE_AT 1281#if EV_HEAP_CACHE_AT
1282 /* a heap element */
481 typedef struct { 1283 typedef struct {
482 ev_tstamp at; 1284 ev_tstamp at;
483 WT w; 1285 WT w;
484 } ANHE; 1286 } ANHE;
485 1287
486 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1288 #define ANHE_w(he) (he).w /* access watcher, read-write */
487 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1289 #define ANHE_at(he) (he).at /* access cached at, read-only */
488 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 1290 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
489#else 1291#else
1292 /* a heap element */
490 typedef WT ANHE; 1293 typedef WT ANHE;
491 1294
492 #define ANHE_w(he) (he) 1295 #define ANHE_w(he) (he)
493 #define ANHE_at(he) (he)->at 1296 #define ANHE_at(he) (he)->at
494 #define ANHE_at_cache(he) 1297 #define ANHE_at_cache(he)
… …
505 #undef VAR 1308 #undef VAR
506 }; 1309 };
507 #include "ev_wrap.h" 1310 #include "ev_wrap.h"
508 1311
509 static struct ev_loop default_loop_struct; 1312 static struct ev_loop default_loop_struct;
510 struct ev_loop *ev_default_loop_ptr; 1313 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
511 1314
512#else 1315#else
513 1316
514 ev_tstamp ev_rt_now; 1317 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
515 #define VAR(name,decl) static decl; 1318 #define VAR(name,decl) static decl;
516 #include "ev_vars.h" 1319 #include "ev_vars.h"
517 #undef VAR 1320 #undef VAR
518 1321
519 static int ev_default_loop_ptr; 1322 static int ev_default_loop_ptr;
520 1323
521#endif 1324#endif
522 1325
1326#if EV_FEATURE_API
1327# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1328# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1329# define EV_INVOKE_PENDING invoke_cb (EV_A)
1330#else
1331# define EV_RELEASE_CB (void)0
1332# define EV_ACQUIRE_CB (void)0
1333# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1334#endif
1335
1336#define EVBREAK_RECURSE 0x80
1337
523/*****************************************************************************/ 1338/*****************************************************************************/
524 1339
1340#ifndef EV_HAVE_EV_TIME
525ev_tstamp 1341ev_tstamp
526ev_time (void) 1342ev_time (void) EV_THROW
527{ 1343{
528#if EV_USE_REALTIME 1344#if EV_USE_REALTIME
1345 if (expect_true (have_realtime))
1346 {
529 struct timespec ts; 1347 struct timespec ts;
530 clock_gettime (CLOCK_REALTIME, &ts); 1348 clock_gettime (CLOCK_REALTIME, &ts);
531 return ts.tv_sec + ts.tv_nsec * 1e-9; 1349 return ts.tv_sec + ts.tv_nsec * 1e-9;
532#else 1350 }
1351#endif
1352
533 struct timeval tv; 1353 struct timeval tv;
534 gettimeofday (&tv, 0); 1354 gettimeofday (&tv, 0);
535 return tv.tv_sec + tv.tv_usec * 1e-6; 1355 return tv.tv_sec + tv.tv_usec * 1e-6;
536#endif
537} 1356}
1357#endif
538 1358
539ev_tstamp inline_size 1359inline_size ev_tstamp
540get_clock (void) 1360get_clock (void)
541{ 1361{
542#if EV_USE_MONOTONIC 1362#if EV_USE_MONOTONIC
543 if (expect_true (have_monotonic)) 1363 if (expect_true (have_monotonic))
544 { 1364 {
… …
551 return ev_time (); 1371 return ev_time ();
552} 1372}
553 1373
554#if EV_MULTIPLICITY 1374#if EV_MULTIPLICITY
555ev_tstamp 1375ev_tstamp
556ev_now (EV_P) 1376ev_now (EV_P) EV_THROW
557{ 1377{
558 return ev_rt_now; 1378 return ev_rt_now;
559} 1379}
560#endif 1380#endif
561 1381
562void 1382void
563ev_sleep (ev_tstamp delay) 1383ev_sleep (ev_tstamp delay) EV_THROW
564{ 1384{
565 if (delay > 0.) 1385 if (delay > 0.)
566 { 1386 {
567#if EV_USE_NANOSLEEP 1387#if EV_USE_NANOSLEEP
568 struct timespec ts; 1388 struct timespec ts;
569 1389
570 ts.tv_sec = (time_t)delay; 1390 EV_TS_SET (ts, delay);
571 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
572
573 nanosleep (&ts, 0); 1391 nanosleep (&ts, 0);
574#elif defined(_WIN32) 1392#elif defined _WIN32
575 Sleep ((unsigned long)(delay * 1e3)); 1393 Sleep ((unsigned long)(delay * 1e3));
576#else 1394#else
577 struct timeval tv; 1395 struct timeval tv;
578 1396
579 tv.tv_sec = (time_t)delay;
580 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
581
582 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1397 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
583 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1398 /* something not guaranteed by newer posix versions, but guaranteed */
584 /* by older ones */ 1399 /* by older ones */
1400 EV_TV_SET (tv, delay);
585 select (0, 0, 0, 0, &tv); 1401 select (0, 0, 0, 0, &tv);
586#endif 1402#endif
587 } 1403 }
588} 1404}
589 1405
590/*****************************************************************************/ 1406/*****************************************************************************/
591 1407
592#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1408#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
593 1409
594int inline_size 1410/* find a suitable new size for the given array, */
1411/* hopefully by rounding to a nice-to-malloc size */
1412inline_size int
595array_nextsize (int elem, int cur, int cnt) 1413array_nextsize (int elem, int cur, int cnt)
596{ 1414{
597 int ncur = cur + 1; 1415 int ncur = cur + 1;
598 1416
599 do 1417 do
600 ncur <<= 1; 1418 ncur <<= 1;
601 while (cnt > ncur); 1419 while (cnt > ncur);
602 1420
603 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1421 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
604 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1422 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
605 { 1423 {
606 ncur *= elem; 1424 ncur *= elem;
607 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1425 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
608 ncur = ncur - sizeof (void *) * 4; 1426 ncur = ncur - sizeof (void *) * 4;
… …
610 } 1428 }
611 1429
612 return ncur; 1430 return ncur;
613} 1431}
614 1432
615static noinline void * 1433static void * noinline ecb_cold
616array_realloc (int elem, void *base, int *cur, int cnt) 1434array_realloc (int elem, void *base, int *cur, int cnt)
617{ 1435{
618 *cur = array_nextsize (elem, *cur, cnt); 1436 *cur = array_nextsize (elem, *cur, cnt);
619 return ev_realloc (base, elem * *cur); 1437 return ev_realloc (base, elem * *cur);
620} 1438}
… …
623 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1441 memset ((void *)(base), 0, sizeof (*(base)) * (count))
624 1442
625#define array_needsize(type,base,cur,cnt,init) \ 1443#define array_needsize(type,base,cur,cnt,init) \
626 if (expect_false ((cnt) > (cur))) \ 1444 if (expect_false ((cnt) > (cur))) \
627 { \ 1445 { \
628 int ocur_ = (cur); \ 1446 int ecb_unused ocur_ = (cur); \
629 (base) = (type *)array_realloc \ 1447 (base) = (type *)array_realloc \
630 (sizeof (type), (base), &(cur), (cnt)); \ 1448 (sizeof (type), (base), &(cur), (cnt)); \
631 init ((base) + (ocur_), (cur) - ocur_); \ 1449 init ((base) + (ocur_), (cur) - ocur_); \
632 } 1450 }
633 1451
… …
640 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1458 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
641 } 1459 }
642#endif 1460#endif
643 1461
644#define array_free(stem, idx) \ 1462#define array_free(stem, idx) \
645 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1463 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
646 1464
647/*****************************************************************************/ 1465/*****************************************************************************/
648 1466
1467/* dummy callback for pending events */
1468static void noinline
1469pendingcb (EV_P_ ev_prepare *w, int revents)
1470{
1471}
1472
649void noinline 1473void noinline
650ev_feed_event (EV_P_ void *w, int revents) 1474ev_feed_event (EV_P_ void *w, int revents) EV_THROW
651{ 1475{
652 W w_ = (W)w; 1476 W w_ = (W)w;
653 int pri = ABSPRI (w_); 1477 int pri = ABSPRI (w_);
654 1478
655 if (expect_false (w_->pending)) 1479 if (expect_false (w_->pending))
… …
659 w_->pending = ++pendingcnt [pri]; 1483 w_->pending = ++pendingcnt [pri];
660 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1484 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
661 pendings [pri][w_->pending - 1].w = w_; 1485 pendings [pri][w_->pending - 1].w = w_;
662 pendings [pri][w_->pending - 1].events = revents; 1486 pendings [pri][w_->pending - 1].events = revents;
663 } 1487 }
664}
665 1488
666void inline_speed 1489 pendingpri = NUMPRI - 1;
1490}
1491
1492inline_speed void
1493feed_reverse (EV_P_ W w)
1494{
1495 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1496 rfeeds [rfeedcnt++] = w;
1497}
1498
1499inline_size void
1500feed_reverse_done (EV_P_ int revents)
1501{
1502 do
1503 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1504 while (rfeedcnt);
1505}
1506
1507inline_speed void
667queue_events (EV_P_ W *events, int eventcnt, int type) 1508queue_events (EV_P_ W *events, int eventcnt, int type)
668{ 1509{
669 int i; 1510 int i;
670 1511
671 for (i = 0; i < eventcnt; ++i) 1512 for (i = 0; i < eventcnt; ++i)
672 ev_feed_event (EV_A_ events [i], type); 1513 ev_feed_event (EV_A_ events [i], type);
673} 1514}
674 1515
675/*****************************************************************************/ 1516/*****************************************************************************/
676 1517
677void inline_speed 1518inline_speed void
678fd_event (EV_P_ int fd, int revents) 1519fd_event_nocheck (EV_P_ int fd, int revents)
679{ 1520{
680 ANFD *anfd = anfds + fd; 1521 ANFD *anfd = anfds + fd;
681 ev_io *w; 1522 ev_io *w;
682 1523
683 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1524 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
687 if (ev) 1528 if (ev)
688 ev_feed_event (EV_A_ (W)w, ev); 1529 ev_feed_event (EV_A_ (W)w, ev);
689 } 1530 }
690} 1531}
691 1532
1533/* do not submit kernel events for fds that have reify set */
1534/* because that means they changed while we were polling for new events */
1535inline_speed void
1536fd_event (EV_P_ int fd, int revents)
1537{
1538 ANFD *anfd = anfds + fd;
1539
1540 if (expect_true (!anfd->reify))
1541 fd_event_nocheck (EV_A_ fd, revents);
1542}
1543
692void 1544void
693ev_feed_fd_event (EV_P_ int fd, int revents) 1545ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
694{ 1546{
695 if (fd >= 0 && fd < anfdmax) 1547 if (fd >= 0 && fd < anfdmax)
696 fd_event (EV_A_ fd, revents); 1548 fd_event_nocheck (EV_A_ fd, revents);
697} 1549}
698 1550
699void inline_size 1551/* make sure the external fd watch events are in-sync */
1552/* with the kernel/libev internal state */
1553inline_size void
700fd_reify (EV_P) 1554fd_reify (EV_P)
701{ 1555{
702 int i; 1556 int i;
1557
1558#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1559 for (i = 0; i < fdchangecnt; ++i)
1560 {
1561 int fd = fdchanges [i];
1562 ANFD *anfd = anfds + fd;
1563
1564 if (anfd->reify & EV__IOFDSET && anfd->head)
1565 {
1566 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1567
1568 if (handle != anfd->handle)
1569 {
1570 unsigned long arg;
1571
1572 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1573
1574 /* handle changed, but fd didn't - we need to do it in two steps */
1575 backend_modify (EV_A_ fd, anfd->events, 0);
1576 anfd->events = 0;
1577 anfd->handle = handle;
1578 }
1579 }
1580 }
1581#endif
703 1582
704 for (i = 0; i < fdchangecnt; ++i) 1583 for (i = 0; i < fdchangecnt; ++i)
705 { 1584 {
706 int fd = fdchanges [i]; 1585 int fd = fdchanges [i];
707 ANFD *anfd = anfds + fd; 1586 ANFD *anfd = anfds + fd;
708 ev_io *w; 1587 ev_io *w;
709 1588
710 unsigned char events = 0; 1589 unsigned char o_events = anfd->events;
1590 unsigned char o_reify = anfd->reify;
711 1591
712 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1592 anfd->reify = 0;
713 events |= (unsigned char)w->events;
714 1593
715#if EV_SELECT_IS_WINSOCKET 1594 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
716 if (events)
717 { 1595 {
718 unsigned long arg; 1596 anfd->events = 0;
719 #ifdef EV_FD_TO_WIN32_HANDLE 1597
720 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1598 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
721 #else 1599 anfd->events |= (unsigned char)w->events;
722 anfd->handle = _get_osfhandle (fd); 1600
723 #endif 1601 if (o_events != anfd->events)
724 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1602 o_reify = EV__IOFDSET; /* actually |= */
725 } 1603 }
726#endif
727 1604
728 { 1605 if (o_reify & EV__IOFDSET)
729 unsigned char o_events = anfd->events;
730 unsigned char o_reify = anfd->reify;
731
732 anfd->reify = 0;
733 anfd->events = events;
734
735 if (o_events != events || o_reify & EV_IOFDSET)
736 backend_modify (EV_A_ fd, o_events, events); 1606 backend_modify (EV_A_ fd, o_events, anfd->events);
737 }
738 } 1607 }
739 1608
740 fdchangecnt = 0; 1609 fdchangecnt = 0;
741} 1610}
742 1611
743void inline_size 1612/* something about the given fd changed */
1613inline_size void
744fd_change (EV_P_ int fd, int flags) 1614fd_change (EV_P_ int fd, int flags)
745{ 1615{
746 unsigned char reify = anfds [fd].reify; 1616 unsigned char reify = anfds [fd].reify;
747 anfds [fd].reify |= flags; 1617 anfds [fd].reify |= flags;
748 1618
… …
752 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1622 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
753 fdchanges [fdchangecnt - 1] = fd; 1623 fdchanges [fdchangecnt - 1] = fd;
754 } 1624 }
755} 1625}
756 1626
757void inline_speed 1627/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1628inline_speed void ecb_cold
758fd_kill (EV_P_ int fd) 1629fd_kill (EV_P_ int fd)
759{ 1630{
760 ev_io *w; 1631 ev_io *w;
761 1632
762 while ((w = (ev_io *)anfds [fd].head)) 1633 while ((w = (ev_io *)anfds [fd].head))
… …
764 ev_io_stop (EV_A_ w); 1635 ev_io_stop (EV_A_ w);
765 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1636 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
766 } 1637 }
767} 1638}
768 1639
769int inline_size 1640/* check whether the given fd is actually valid, for error recovery */
1641inline_size int ecb_cold
770fd_valid (int fd) 1642fd_valid (int fd)
771{ 1643{
772#ifdef _WIN32 1644#ifdef _WIN32
773 return _get_osfhandle (fd) != -1; 1645 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
774#else 1646#else
775 return fcntl (fd, F_GETFD) != -1; 1647 return fcntl (fd, F_GETFD) != -1;
776#endif 1648#endif
777} 1649}
778 1650
779/* called on EBADF to verify fds */ 1651/* called on EBADF to verify fds */
780static void noinline 1652static void noinline ecb_cold
781fd_ebadf (EV_P) 1653fd_ebadf (EV_P)
782{ 1654{
783 int fd; 1655 int fd;
784 1656
785 for (fd = 0; fd < anfdmax; ++fd) 1657 for (fd = 0; fd < anfdmax; ++fd)
… …
787 if (!fd_valid (fd) && errno == EBADF) 1659 if (!fd_valid (fd) && errno == EBADF)
788 fd_kill (EV_A_ fd); 1660 fd_kill (EV_A_ fd);
789} 1661}
790 1662
791/* called on ENOMEM in select/poll to kill some fds and retry */ 1663/* called on ENOMEM in select/poll to kill some fds and retry */
792static void noinline 1664static void noinline ecb_cold
793fd_enomem (EV_P) 1665fd_enomem (EV_P)
794{ 1666{
795 int fd; 1667 int fd;
796 1668
797 for (fd = anfdmax; fd--; ) 1669 for (fd = anfdmax; fd--; )
798 if (anfds [fd].events) 1670 if (anfds [fd].events)
799 { 1671 {
800 fd_kill (EV_A_ fd); 1672 fd_kill (EV_A_ fd);
801 return; 1673 break;
802 } 1674 }
803} 1675}
804 1676
805/* usually called after fork if backend needs to re-arm all fds from scratch */ 1677/* usually called after fork if backend needs to re-arm all fds from scratch */
806static void noinline 1678static void noinline
… …
811 for (fd = 0; fd < anfdmax; ++fd) 1683 for (fd = 0; fd < anfdmax; ++fd)
812 if (anfds [fd].events) 1684 if (anfds [fd].events)
813 { 1685 {
814 anfds [fd].events = 0; 1686 anfds [fd].events = 0;
815 anfds [fd].emask = 0; 1687 anfds [fd].emask = 0;
816 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1688 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
817 } 1689 }
818} 1690}
819 1691
1692/* used to prepare libev internal fd's */
1693/* this is not fork-safe */
1694inline_speed void
1695fd_intern (int fd)
1696{
1697#ifdef _WIN32
1698 unsigned long arg = 1;
1699 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1700#else
1701 fcntl (fd, F_SETFD, FD_CLOEXEC);
1702 fcntl (fd, F_SETFL, O_NONBLOCK);
1703#endif
1704}
1705
820/*****************************************************************************/ 1706/*****************************************************************************/
821 1707
822/* 1708/*
823 * the heap functions want a real array index. array index 0 uis guaranteed to not 1709 * the heap functions want a real array index. array index 0 is guaranteed to not
824 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1710 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
825 * the branching factor of the d-tree. 1711 * the branching factor of the d-tree.
826 */ 1712 */
827 1713
828/* 1714/*
… …
837#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1723#define HEAP0 (DHEAP - 1) /* index of first element in heap */
838#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1724#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
839#define UPHEAP_DONE(p,k) ((p) == (k)) 1725#define UPHEAP_DONE(p,k) ((p) == (k))
840 1726
841/* away from the root */ 1727/* away from the root */
842void inline_speed 1728inline_speed void
843downheap (ANHE *heap, int N, int k) 1729downheap (ANHE *heap, int N, int k)
844{ 1730{
845 ANHE he = heap [k]; 1731 ANHE he = heap [k];
846 ANHE *E = heap + N + HEAP0; 1732 ANHE *E = heap + N + HEAP0;
847 1733
… …
887#define HEAP0 1 1773#define HEAP0 1
888#define HPARENT(k) ((k) >> 1) 1774#define HPARENT(k) ((k) >> 1)
889#define UPHEAP_DONE(p,k) (!(p)) 1775#define UPHEAP_DONE(p,k) (!(p))
890 1776
891/* away from the root */ 1777/* away from the root */
892void inline_speed 1778inline_speed void
893downheap (ANHE *heap, int N, int k) 1779downheap (ANHE *heap, int N, int k)
894{ 1780{
895 ANHE he = heap [k]; 1781 ANHE he = heap [k];
896 1782
897 for (;;) 1783 for (;;)
898 { 1784 {
899 int c = k << 1; 1785 int c = k << 1;
900 1786
901 if (c > N + HEAP0 - 1) 1787 if (c >= N + HEAP0)
902 break; 1788 break;
903 1789
904 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1790 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
905 ? 1 : 0; 1791 ? 1 : 0;
906 1792
… …
917 ev_active (ANHE_w (he)) = k; 1803 ev_active (ANHE_w (he)) = k;
918} 1804}
919#endif 1805#endif
920 1806
921/* towards the root */ 1807/* towards the root */
922void inline_speed 1808inline_speed void
923upheap (ANHE *heap, int k) 1809upheap (ANHE *heap, int k)
924{ 1810{
925 ANHE he = heap [k]; 1811 ANHE he = heap [k];
926 1812
927 for (;;) 1813 for (;;)
… …
938 1824
939 heap [k] = he; 1825 heap [k] = he;
940 ev_active (ANHE_w (he)) = k; 1826 ev_active (ANHE_w (he)) = k;
941} 1827}
942 1828
943void inline_size 1829/* move an element suitably so it is in a correct place */
1830inline_size void
944adjustheap (ANHE *heap, int N, int k) 1831adjustheap (ANHE *heap, int N, int k)
945{ 1832{
946 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1833 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
947 upheap (heap, k); 1834 upheap (heap, k);
948 else 1835 else
949 downheap (heap, N, k); 1836 downheap (heap, N, k);
950} 1837}
951 1838
952/* rebuild the heap: this function is used only once and executed rarely */ 1839/* rebuild the heap: this function is used only once and executed rarely */
953void inline_size 1840inline_size void
954reheap (ANHE *heap, int N) 1841reheap (ANHE *heap, int N)
955{ 1842{
956 int i; 1843 int i;
957 1844
958 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1845 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
961 upheap (heap, i + HEAP0); 1848 upheap (heap, i + HEAP0);
962} 1849}
963 1850
964/*****************************************************************************/ 1851/*****************************************************************************/
965 1852
1853/* associate signal watchers to a signal signal */
966typedef struct 1854typedef struct
967{ 1855{
1856 EV_ATOMIC_T pending;
1857#if EV_MULTIPLICITY
1858 EV_P;
1859#endif
968 WL head; 1860 WL head;
969 EV_ATOMIC_T gotsig;
970} ANSIG; 1861} ANSIG;
971 1862
972static ANSIG *signals; 1863static ANSIG signals [EV_NSIG - 1];
973static int signalmax;
974
975static EV_ATOMIC_T gotsig;
976 1864
977/*****************************************************************************/ 1865/*****************************************************************************/
978 1866
979void inline_speed 1867#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
980fd_intern (int fd)
981{
982#ifdef _WIN32
983 unsigned long arg = 1;
984 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
985#else
986 fcntl (fd, F_SETFD, FD_CLOEXEC);
987 fcntl (fd, F_SETFL, O_NONBLOCK);
988#endif
989}
990 1868
991static void noinline 1869static void noinline ecb_cold
992evpipe_init (EV_P) 1870evpipe_init (EV_P)
993{ 1871{
994 if (!ev_is_active (&pipeev)) 1872 if (!ev_is_active (&pipe_w))
995 { 1873 {
996#if EV_USE_EVENTFD 1874# if EV_USE_EVENTFD
1875 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1876 if (evfd < 0 && errno == EINVAL)
997 if ((evfd = eventfd (0, 0)) >= 0) 1877 evfd = eventfd (0, 0);
1878
1879 if (evfd >= 0)
998 { 1880 {
999 evpipe [0] = -1; 1881 evpipe [0] = -1;
1000 fd_intern (evfd); 1882 fd_intern (evfd); /* doing it twice doesn't hurt */
1001 ev_io_set (&pipeev, evfd, EV_READ); 1883 ev_io_set (&pipe_w, evfd, EV_READ);
1002 } 1884 }
1003 else 1885 else
1004#endif 1886# endif
1005 { 1887 {
1006 while (pipe (evpipe)) 1888 while (pipe (evpipe))
1007 ev_syserr ("(libev) error creating signal/async pipe"); 1889 ev_syserr ("(libev) error creating signal/async pipe");
1008 1890
1009 fd_intern (evpipe [0]); 1891 fd_intern (evpipe [0]);
1010 fd_intern (evpipe [1]); 1892 fd_intern (evpipe [1]);
1011 ev_io_set (&pipeev, evpipe [0], EV_READ); 1893 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1012 } 1894 }
1013 1895
1014 ev_io_start (EV_A_ &pipeev); 1896 ev_io_start (EV_A_ &pipe_w);
1015 ev_unref (EV_A); /* watcher should not keep loop alive */ 1897 ev_unref (EV_A); /* watcher should not keep loop alive */
1016 } 1898 }
1017} 1899}
1018 1900
1019void inline_size 1901inline_speed void
1020evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1902evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1021{ 1903{
1022 if (!*flag) 1904 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1905
1906 if (expect_true (*flag))
1907 return;
1908
1909 *flag = 1;
1910 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1911
1912 pipe_write_skipped = 1;
1913
1914 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1915
1916 if (pipe_write_wanted)
1023 { 1917 {
1918 int old_errno;
1919
1920 pipe_write_skipped = 0;
1921 ECB_MEMORY_FENCE_RELEASE;
1922
1024 int old_errno = errno; /* save errno because write might clobber it */ 1923 old_errno = errno; /* save errno because write will clobber it */
1025
1026 *flag = 1;
1027 1924
1028#if EV_USE_EVENTFD 1925#if EV_USE_EVENTFD
1029 if (evfd >= 0) 1926 if (evfd >= 0)
1030 { 1927 {
1031 uint64_t counter = 1; 1928 uint64_t counter = 1;
1032 write (evfd, &counter, sizeof (uint64_t)); 1929 write (evfd, &counter, sizeof (uint64_t));
1033 } 1930 }
1034 else 1931 else
1035#endif 1932#endif
1933 {
1934#ifdef _WIN32
1935 WSABUF buf;
1936 DWORD sent;
1937 buf.buf = &buf;
1938 buf.len = 1;
1939 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1940#else
1036 write (evpipe [1], &old_errno, 1); 1941 write (evpipe [1], &(evpipe [1]), 1);
1942#endif
1943 }
1037 1944
1038 errno = old_errno; 1945 errno = old_errno;
1039 } 1946 }
1040} 1947}
1041 1948
1949/* called whenever the libev signal pipe */
1950/* got some events (signal, async) */
1042static void 1951static void
1043pipecb (EV_P_ ev_io *iow, int revents) 1952pipecb (EV_P_ ev_io *iow, int revents)
1044{ 1953{
1954 int i;
1955
1956 if (revents & EV_READ)
1957 {
1045#if EV_USE_EVENTFD 1958#if EV_USE_EVENTFD
1046 if (evfd >= 0) 1959 if (evfd >= 0)
1047 { 1960 {
1048 uint64_t counter; 1961 uint64_t counter;
1049 read (evfd, &counter, sizeof (uint64_t)); 1962 read (evfd, &counter, sizeof (uint64_t));
1050 } 1963 }
1051 else 1964 else
1052#endif 1965#endif
1053 { 1966 {
1054 char dummy; 1967 char dummy[4];
1968#ifdef _WIN32
1969 WSABUF buf;
1970 DWORD recvd;
1971 DWORD flags = 0;
1972 buf.buf = dummy;
1973 buf.len = sizeof (dummy);
1974 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1975#else
1055 read (evpipe [0], &dummy, 1); 1976 read (evpipe [0], &dummy, sizeof (dummy));
1977#endif
1978 }
1979 }
1980
1981 pipe_write_skipped = 0;
1982
1983 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1984
1985#if EV_SIGNAL_ENABLE
1986 if (sig_pending)
1056 } 1987 {
1988 sig_pending = 0;
1057 1989
1058 if (gotsig && ev_is_default_loop (EV_A)) 1990 ECB_MEMORY_FENCE;
1059 {
1060 int signum;
1061 gotsig = 0;
1062 1991
1063 for (signum = signalmax; signum--; ) 1992 for (i = EV_NSIG - 1; i--; )
1064 if (signals [signum].gotsig) 1993 if (expect_false (signals [i].pending))
1065 ev_feed_signal_event (EV_A_ signum + 1); 1994 ev_feed_signal_event (EV_A_ i + 1);
1066 } 1995 }
1996#endif
1067 1997
1068#if EV_ASYNC_ENABLE 1998#if EV_ASYNC_ENABLE
1069 if (gotasync) 1999 if (async_pending)
1070 { 2000 {
1071 int i; 2001 async_pending = 0;
1072 gotasync = 0; 2002
2003 ECB_MEMORY_FENCE;
1073 2004
1074 for (i = asynccnt; i--; ) 2005 for (i = asynccnt; i--; )
1075 if (asyncs [i]->sent) 2006 if (asyncs [i]->sent)
1076 { 2007 {
1077 asyncs [i]->sent = 0; 2008 asyncs [i]->sent = 0;
2009 ECB_MEMORY_FENCE_RELEASE;
1078 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2010 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1079 } 2011 }
1080 } 2012 }
1081#endif 2013#endif
1082} 2014}
1083 2015
1084/*****************************************************************************/ 2016/*****************************************************************************/
1085 2017
2018void
2019ev_feed_signal (int signum) EV_THROW
2020{
2021#if EV_MULTIPLICITY
2022 EV_P = signals [signum - 1].loop;
2023
2024 if (!EV_A)
2025 return;
2026#endif
2027
2028 if (!ev_active (&pipe_w))
2029 return;
2030
2031 signals [signum - 1].pending = 1;
2032 evpipe_write (EV_A_ &sig_pending);
2033}
2034
1086static void 2035static void
1087ev_sighandler (int signum) 2036ev_sighandler (int signum)
1088{ 2037{
2038#ifdef _WIN32
2039 signal (signum, ev_sighandler);
2040#endif
2041
2042 ev_feed_signal (signum);
2043}
2044
2045void noinline
2046ev_feed_signal_event (EV_P_ int signum) EV_THROW
2047{
2048 WL w;
2049
2050 if (expect_false (signum <= 0 || signum > EV_NSIG))
2051 return;
2052
2053 --signum;
2054
1089#if EV_MULTIPLICITY 2055#if EV_MULTIPLICITY
1090 struct ev_loop *loop = &default_loop_struct; 2056 /* it is permissible to try to feed a signal to the wrong loop */
1091#endif 2057 /* or, likely more useful, feeding a signal nobody is waiting for */
1092 2058
1093#if _WIN32 2059 if (expect_false (signals [signum].loop != EV_A))
1094 signal (signum, ev_sighandler);
1095#endif
1096
1097 signals [signum - 1].gotsig = 1;
1098 evpipe_write (EV_A_ &gotsig);
1099}
1100
1101void noinline
1102ev_feed_signal_event (EV_P_ int signum)
1103{
1104 WL w;
1105
1106#if EV_MULTIPLICITY
1107 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1108#endif
1109
1110 --signum;
1111
1112 if (signum < 0 || signum >= signalmax)
1113 return; 2060 return;
2061#endif
1114 2062
1115 signals [signum].gotsig = 0; 2063 signals [signum].pending = 0;
2064 ECB_MEMORY_FENCE_RELEASE;
1116 2065
1117 for (w = signals [signum].head; w; w = w->next) 2066 for (w = signals [signum].head; w; w = w->next)
1118 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2067 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1119} 2068}
1120 2069
2070#if EV_USE_SIGNALFD
2071static void
2072sigfdcb (EV_P_ ev_io *iow, int revents)
2073{
2074 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2075
2076 for (;;)
2077 {
2078 ssize_t res = read (sigfd, si, sizeof (si));
2079
2080 /* not ISO-C, as res might be -1, but works with SuS */
2081 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2082 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2083
2084 if (res < (ssize_t)sizeof (si))
2085 break;
2086 }
2087}
2088#endif
2089
2090#endif
2091
1121/*****************************************************************************/ 2092/*****************************************************************************/
1122 2093
2094#if EV_CHILD_ENABLE
1123static WL childs [EV_PID_HASHSIZE]; 2095static WL childs [EV_PID_HASHSIZE];
1124
1125#ifndef _WIN32
1126 2096
1127static ev_signal childev; 2097static ev_signal childev;
1128 2098
1129#ifndef WIFCONTINUED 2099#ifndef WIFCONTINUED
1130# define WIFCONTINUED(status) 0 2100# define WIFCONTINUED(status) 0
1131#endif 2101#endif
1132 2102
1133void inline_speed 2103/* handle a single child status event */
2104inline_speed void
1134child_reap (EV_P_ int chain, int pid, int status) 2105child_reap (EV_P_ int chain, int pid, int status)
1135{ 2106{
1136 ev_child *w; 2107 ev_child *w;
1137 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2108 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1138 2109
1139 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2110 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1140 { 2111 {
1141 if ((w->pid == pid || !w->pid) 2112 if ((w->pid == pid || !w->pid)
1142 && (!traced || (w->flags & 1))) 2113 && (!traced || (w->flags & 1)))
1143 { 2114 {
1144 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2115 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1151 2122
1152#ifndef WCONTINUED 2123#ifndef WCONTINUED
1153# define WCONTINUED 0 2124# define WCONTINUED 0
1154#endif 2125#endif
1155 2126
2127/* called on sigchld etc., calls waitpid */
1156static void 2128static void
1157childcb (EV_P_ ev_signal *sw, int revents) 2129childcb (EV_P_ ev_signal *sw, int revents)
1158{ 2130{
1159 int pid, status; 2131 int pid, status;
1160 2132
… …
1168 /* make sure we are called again until all children have been reaped */ 2140 /* make sure we are called again until all children have been reaped */
1169 /* we need to do it this way so that the callback gets called before we continue */ 2141 /* we need to do it this way so that the callback gets called before we continue */
1170 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2142 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1171 2143
1172 child_reap (EV_A_ pid, pid, status); 2144 child_reap (EV_A_ pid, pid, status);
1173 if (EV_PID_HASHSIZE > 1) 2145 if ((EV_PID_HASHSIZE) > 1)
1174 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2146 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1175} 2147}
1176 2148
1177#endif 2149#endif
1178 2150
1179/*****************************************************************************/ 2151/*****************************************************************************/
1180 2152
2153#if EV_USE_IOCP
2154# include "ev_iocp.c"
2155#endif
1181#if EV_USE_PORT 2156#if EV_USE_PORT
1182# include "ev_port.c" 2157# include "ev_port.c"
1183#endif 2158#endif
1184#if EV_USE_KQUEUE 2159#if EV_USE_KQUEUE
1185# include "ev_kqueue.c" 2160# include "ev_kqueue.c"
… …
1192#endif 2167#endif
1193#if EV_USE_SELECT 2168#if EV_USE_SELECT
1194# include "ev_select.c" 2169# include "ev_select.c"
1195#endif 2170#endif
1196 2171
1197int 2172int ecb_cold
1198ev_version_major (void) 2173ev_version_major (void) EV_THROW
1199{ 2174{
1200 return EV_VERSION_MAJOR; 2175 return EV_VERSION_MAJOR;
1201} 2176}
1202 2177
1203int 2178int ecb_cold
1204ev_version_minor (void) 2179ev_version_minor (void) EV_THROW
1205{ 2180{
1206 return EV_VERSION_MINOR; 2181 return EV_VERSION_MINOR;
1207} 2182}
1208 2183
1209/* return true if we are running with elevated privileges and should ignore env variables */ 2184/* return true if we are running with elevated privileges and should ignore env variables */
1210int inline_size 2185int inline_size ecb_cold
1211enable_secure (void) 2186enable_secure (void)
1212{ 2187{
1213#ifdef _WIN32 2188#ifdef _WIN32
1214 return 0; 2189 return 0;
1215#else 2190#else
1216 return getuid () != geteuid () 2191 return getuid () != geteuid ()
1217 || getgid () != getegid (); 2192 || getgid () != getegid ();
1218#endif 2193#endif
1219} 2194}
1220 2195
1221unsigned int 2196unsigned int ecb_cold
1222ev_supported_backends (void) 2197ev_supported_backends (void) EV_THROW
1223{ 2198{
1224 unsigned int flags = 0; 2199 unsigned int flags = 0;
1225 2200
1226 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2201 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1227 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2202 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1230 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2205 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1231 2206
1232 return flags; 2207 return flags;
1233} 2208}
1234 2209
1235unsigned int 2210unsigned int ecb_cold
1236ev_recommended_backends (void) 2211ev_recommended_backends (void) EV_THROW
1237{ 2212{
1238 unsigned int flags = ev_supported_backends (); 2213 unsigned int flags = ev_supported_backends ();
1239 2214
1240#ifndef __NetBSD__ 2215#ifndef __NetBSD__
1241 /* kqueue is borked on everything but netbsd apparently */ 2216 /* kqueue is borked on everything but netbsd apparently */
1242 /* it usually doesn't work correctly on anything but sockets and pipes */ 2217 /* it usually doesn't work correctly on anything but sockets and pipes */
1243 flags &= ~EVBACKEND_KQUEUE; 2218 flags &= ~EVBACKEND_KQUEUE;
1244#endif 2219#endif
1245#ifdef __APPLE__ 2220#ifdef __APPLE__
1246 // flags &= ~EVBACKEND_KQUEUE; for documentation 2221 /* only select works correctly on that "unix-certified" platform */
1247 flags &= ~EVBACKEND_POLL; 2222 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
2223 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
2224#endif
2225#ifdef __FreeBSD__
2226 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1248#endif 2227#endif
1249 2228
1250 return flags; 2229 return flags;
1251} 2230}
1252 2231
2232unsigned int ecb_cold
2233ev_embeddable_backends (void) EV_THROW
2234{
2235 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2236
2237 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2238 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2239 flags &= ~EVBACKEND_EPOLL;
2240
2241 return flags;
2242}
2243
1253unsigned int 2244unsigned int
1254ev_embeddable_backends (void) 2245ev_backend (EV_P) EV_THROW
1255{ 2246{
1256 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2247 return backend;
1257
1258 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1259 /* please fix it and tell me how to detect the fix */
1260 flags &= ~EVBACKEND_EPOLL;
1261
1262 return flags;
1263} 2248}
1264 2249
2250#if EV_FEATURE_API
1265unsigned int 2251unsigned int
1266ev_backend (EV_P) 2252ev_iteration (EV_P) EV_THROW
1267{ 2253{
1268 return backend; 2254 return loop_count;
1269} 2255}
1270 2256
1271unsigned int 2257unsigned int
1272ev_loop_count (EV_P) 2258ev_depth (EV_P) EV_THROW
1273{ 2259{
1274 return loop_count; 2260 return loop_depth;
1275} 2261}
1276 2262
1277void 2263void
1278ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2264ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1279{ 2265{
1280 io_blocktime = interval; 2266 io_blocktime = interval;
1281} 2267}
1282 2268
1283void 2269void
1284ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2270ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1285{ 2271{
1286 timeout_blocktime = interval; 2272 timeout_blocktime = interval;
1287} 2273}
1288 2274
2275void
2276ev_set_userdata (EV_P_ void *data) EV_THROW
2277{
2278 userdata = data;
2279}
2280
2281void *
2282ev_userdata (EV_P) EV_THROW
2283{
2284 return userdata;
2285}
2286
2287void
2288ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2289{
2290 invoke_cb = invoke_pending_cb;
2291}
2292
2293void
2294ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2295{
2296 release_cb = release;
2297 acquire_cb = acquire;
2298}
2299#endif
2300
2301/* initialise a loop structure, must be zero-initialised */
1289static void noinline 2302static void noinline ecb_cold
1290loop_init (EV_P_ unsigned int flags) 2303loop_init (EV_P_ unsigned int flags) EV_THROW
1291{ 2304{
1292 if (!backend) 2305 if (!backend)
1293 { 2306 {
2307 origflags = flags;
2308
2309#if EV_USE_REALTIME
2310 if (!have_realtime)
2311 {
2312 struct timespec ts;
2313
2314 if (!clock_gettime (CLOCK_REALTIME, &ts))
2315 have_realtime = 1;
2316 }
2317#endif
2318
1294#if EV_USE_MONOTONIC 2319#if EV_USE_MONOTONIC
2320 if (!have_monotonic)
1295 { 2321 {
1296 struct timespec ts; 2322 struct timespec ts;
2323
1297 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2324 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1298 have_monotonic = 1; 2325 have_monotonic = 1;
1299 } 2326 }
1300#endif
1301
1302 ev_rt_now = ev_time ();
1303 mn_now = get_clock ();
1304 now_floor = mn_now;
1305 rtmn_diff = ev_rt_now - mn_now;
1306
1307 io_blocktime = 0.;
1308 timeout_blocktime = 0.;
1309 backend = 0;
1310 backend_fd = -1;
1311 gotasync = 0;
1312#if EV_USE_INOTIFY
1313 fs_fd = -2;
1314#endif 2327#endif
1315 2328
1316 /* pid check not overridable via env */ 2329 /* pid check not overridable via env */
1317#ifndef _WIN32 2330#ifndef _WIN32
1318 if (flags & EVFLAG_FORKCHECK) 2331 if (flags & EVFLAG_FORKCHECK)
… …
1322 if (!(flags & EVFLAG_NOENV) 2335 if (!(flags & EVFLAG_NOENV)
1323 && !enable_secure () 2336 && !enable_secure ()
1324 && getenv ("LIBEV_FLAGS")) 2337 && getenv ("LIBEV_FLAGS"))
1325 flags = atoi (getenv ("LIBEV_FLAGS")); 2338 flags = atoi (getenv ("LIBEV_FLAGS"));
1326 2339
1327 if (!(flags & 0x0000ffffU)) 2340 ev_rt_now = ev_time ();
2341 mn_now = get_clock ();
2342 now_floor = mn_now;
2343 rtmn_diff = ev_rt_now - mn_now;
2344#if EV_FEATURE_API
2345 invoke_cb = ev_invoke_pending;
2346#endif
2347
2348 io_blocktime = 0.;
2349 timeout_blocktime = 0.;
2350 backend = 0;
2351 backend_fd = -1;
2352 sig_pending = 0;
2353#if EV_ASYNC_ENABLE
2354 async_pending = 0;
2355#endif
2356 pipe_write_skipped = 0;
2357 pipe_write_wanted = 0;
2358#if EV_USE_INOTIFY
2359 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2360#endif
2361#if EV_USE_SIGNALFD
2362 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2363#endif
2364
2365 if (!(flags & EVBACKEND_MASK))
1328 flags |= ev_recommended_backends (); 2366 flags |= ev_recommended_backends ();
1329 2367
2368#if EV_USE_IOCP
2369 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2370#endif
1330#if EV_USE_PORT 2371#if EV_USE_PORT
1331 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2372 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1332#endif 2373#endif
1333#if EV_USE_KQUEUE 2374#if EV_USE_KQUEUE
1334 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2375 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1341#endif 2382#endif
1342#if EV_USE_SELECT 2383#if EV_USE_SELECT
1343 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2384 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1344#endif 2385#endif
1345 2386
2387 ev_prepare_init (&pending_w, pendingcb);
2388
2389#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1346 ev_init (&pipeev, pipecb); 2390 ev_init (&pipe_w, pipecb);
1347 ev_set_priority (&pipeev, EV_MAXPRI); 2391 ev_set_priority (&pipe_w, EV_MAXPRI);
2392#endif
1348 } 2393 }
1349} 2394}
1350 2395
1351static void noinline 2396/* free up a loop structure */
2397void ecb_cold
1352loop_destroy (EV_P) 2398ev_loop_destroy (EV_P)
1353{ 2399{
1354 int i; 2400 int i;
1355 2401
2402#if EV_MULTIPLICITY
2403 /* mimic free (0) */
2404 if (!EV_A)
2405 return;
2406#endif
2407
2408#if EV_CLEANUP_ENABLE
2409 /* queue cleanup watchers (and execute them) */
2410 if (expect_false (cleanupcnt))
2411 {
2412 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2413 EV_INVOKE_PENDING;
2414 }
2415#endif
2416
2417#if EV_CHILD_ENABLE
2418 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2419 {
2420 ev_ref (EV_A); /* child watcher */
2421 ev_signal_stop (EV_A_ &childev);
2422 }
2423#endif
2424
1356 if (ev_is_active (&pipeev)) 2425 if (ev_is_active (&pipe_w))
1357 { 2426 {
1358 ev_ref (EV_A); /* signal watcher */ 2427 /*ev_ref (EV_A);*/
1359 ev_io_stop (EV_A_ &pipeev); 2428 /*ev_io_stop (EV_A_ &pipe_w);*/
1360 2429
1361#if EV_USE_EVENTFD 2430#if EV_USE_EVENTFD
1362 if (evfd >= 0) 2431 if (evfd >= 0)
1363 close (evfd); 2432 close (evfd);
1364#endif 2433#endif
1365 2434
1366 if (evpipe [0] >= 0) 2435 if (evpipe [0] >= 0)
1367 { 2436 {
1368 close (evpipe [0]); 2437 EV_WIN32_CLOSE_FD (evpipe [0]);
1369 close (evpipe [1]); 2438 EV_WIN32_CLOSE_FD (evpipe [1]);
1370 } 2439 }
1371 } 2440 }
2441
2442#if EV_USE_SIGNALFD
2443 if (ev_is_active (&sigfd_w))
2444 close (sigfd);
2445#endif
1372 2446
1373#if EV_USE_INOTIFY 2447#if EV_USE_INOTIFY
1374 if (fs_fd >= 0) 2448 if (fs_fd >= 0)
1375 close (fs_fd); 2449 close (fs_fd);
1376#endif 2450#endif
1377 2451
1378 if (backend_fd >= 0) 2452 if (backend_fd >= 0)
1379 close (backend_fd); 2453 close (backend_fd);
1380 2454
2455#if EV_USE_IOCP
2456 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2457#endif
1381#if EV_USE_PORT 2458#if EV_USE_PORT
1382 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2459 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1383#endif 2460#endif
1384#if EV_USE_KQUEUE 2461#if EV_USE_KQUEUE
1385 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2462 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1400#if EV_IDLE_ENABLE 2477#if EV_IDLE_ENABLE
1401 array_free (idle, [i]); 2478 array_free (idle, [i]);
1402#endif 2479#endif
1403 } 2480 }
1404 2481
1405 ev_free (anfds); anfdmax = 0; 2482 ev_free (anfds); anfds = 0; anfdmax = 0;
1406 2483
1407 /* have to use the microsoft-never-gets-it-right macro */ 2484 /* have to use the microsoft-never-gets-it-right macro */
2485 array_free (rfeed, EMPTY);
1408 array_free (fdchange, EMPTY); 2486 array_free (fdchange, EMPTY);
1409 array_free (timer, EMPTY); 2487 array_free (timer, EMPTY);
1410#if EV_PERIODIC_ENABLE 2488#if EV_PERIODIC_ENABLE
1411 array_free (periodic, EMPTY); 2489 array_free (periodic, EMPTY);
1412#endif 2490#endif
1413#if EV_FORK_ENABLE 2491#if EV_FORK_ENABLE
1414 array_free (fork, EMPTY); 2492 array_free (fork, EMPTY);
1415#endif 2493#endif
2494#if EV_CLEANUP_ENABLE
2495 array_free (cleanup, EMPTY);
2496#endif
1416 array_free (prepare, EMPTY); 2497 array_free (prepare, EMPTY);
1417 array_free (check, EMPTY); 2498 array_free (check, EMPTY);
1418#if EV_ASYNC_ENABLE 2499#if EV_ASYNC_ENABLE
1419 array_free (async, EMPTY); 2500 array_free (async, EMPTY);
1420#endif 2501#endif
1421 2502
1422 backend = 0; 2503 backend = 0;
2504
2505#if EV_MULTIPLICITY
2506 if (ev_is_default_loop (EV_A))
2507#endif
2508 ev_default_loop_ptr = 0;
2509#if EV_MULTIPLICITY
2510 else
2511 ev_free (EV_A);
2512#endif
1423} 2513}
1424 2514
1425#if EV_USE_INOTIFY 2515#if EV_USE_INOTIFY
1426void inline_size infy_fork (EV_P); 2516inline_size void infy_fork (EV_P);
1427#endif 2517#endif
1428 2518
1429void inline_size 2519inline_size void
1430loop_fork (EV_P) 2520loop_fork (EV_P)
1431{ 2521{
1432#if EV_USE_PORT 2522#if EV_USE_PORT
1433 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2523 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1434#endif 2524#endif
… …
1440#endif 2530#endif
1441#if EV_USE_INOTIFY 2531#if EV_USE_INOTIFY
1442 infy_fork (EV_A); 2532 infy_fork (EV_A);
1443#endif 2533#endif
1444 2534
1445 if (ev_is_active (&pipeev)) 2535 if (ev_is_active (&pipe_w))
1446 { 2536 {
1447 /* this "locks" the handlers against writing to the pipe */ 2537 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1448 /* while we modify the fd vars */
1449 gotsig = 1;
1450#if EV_ASYNC_ENABLE
1451 gotasync = 1;
1452#endif
1453 2538
1454 ev_ref (EV_A); 2539 ev_ref (EV_A);
1455 ev_io_stop (EV_A_ &pipeev); 2540 ev_io_stop (EV_A_ &pipe_w);
1456 2541
1457#if EV_USE_EVENTFD 2542#if EV_USE_EVENTFD
1458 if (evfd >= 0) 2543 if (evfd >= 0)
1459 close (evfd); 2544 close (evfd);
1460#endif 2545#endif
1461 2546
1462 if (evpipe [0] >= 0) 2547 if (evpipe [0] >= 0)
1463 { 2548 {
1464 close (evpipe [0]); 2549 EV_WIN32_CLOSE_FD (evpipe [0]);
1465 close (evpipe [1]); 2550 EV_WIN32_CLOSE_FD (evpipe [1]);
1466 } 2551 }
1467 2552
2553#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1468 evpipe_init (EV_A); 2554 evpipe_init (EV_A);
1469 /* now iterate over everything, in case we missed something */ 2555 /* now iterate over everything, in case we missed something */
1470 pipecb (EV_A_ &pipeev, EV_READ); 2556 pipecb (EV_A_ &pipe_w, EV_READ);
2557#endif
1471 } 2558 }
1472 2559
1473 postfork = 0; 2560 postfork = 0;
1474} 2561}
1475 2562
1476#if EV_MULTIPLICITY 2563#if EV_MULTIPLICITY
1477 2564
1478struct ev_loop * 2565struct ev_loop * ecb_cold
1479ev_loop_new (unsigned int flags) 2566ev_loop_new (unsigned int flags) EV_THROW
1480{ 2567{
1481 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2568 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1482 2569
1483 memset (loop, 0, sizeof (struct ev_loop)); 2570 memset (EV_A, 0, sizeof (struct ev_loop));
1484
1485 loop_init (EV_A_ flags); 2571 loop_init (EV_A_ flags);
1486 2572
1487 if (ev_backend (EV_A)) 2573 if (ev_backend (EV_A))
1488 return loop; 2574 return EV_A;
1489 2575
2576 ev_free (EV_A);
1490 return 0; 2577 return 0;
1491} 2578}
1492 2579
1493void 2580#endif /* multiplicity */
1494ev_loop_destroy (EV_P)
1495{
1496 loop_destroy (EV_A);
1497 ev_free (loop);
1498}
1499
1500void
1501ev_loop_fork (EV_P)
1502{
1503 postfork = 1; /* must be in line with ev_default_fork */
1504}
1505 2581
1506#if EV_VERIFY 2582#if EV_VERIFY
1507static void noinline 2583static void noinline ecb_cold
1508verify_watcher (EV_P_ W w) 2584verify_watcher (EV_P_ W w)
1509{ 2585{
1510 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2586 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1511 2587
1512 if (w->pending) 2588 if (w->pending)
1513 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2589 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1514} 2590}
1515 2591
1516static void noinline 2592static void noinline ecb_cold
1517verify_heap (EV_P_ ANHE *heap, int N) 2593verify_heap (EV_P_ ANHE *heap, int N)
1518{ 2594{
1519 int i; 2595 int i;
1520 2596
1521 for (i = HEAP0; i < N + HEAP0; ++i) 2597 for (i = HEAP0; i < N + HEAP0; ++i)
1522 { 2598 {
1523 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 2599 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1524 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 2600 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1525 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 2601 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1526 2602
1527 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2603 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1528 } 2604 }
1529} 2605}
1530 2606
1531static void noinline 2607static void noinline ecb_cold
1532array_verify (EV_P_ W *ws, int cnt) 2608array_verify (EV_P_ W *ws, int cnt)
1533{ 2609{
1534 while (cnt--) 2610 while (cnt--)
1535 { 2611 {
1536 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2612 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1537 verify_watcher (EV_A_ ws [cnt]); 2613 verify_watcher (EV_A_ ws [cnt]);
1538 } 2614 }
1539} 2615}
1540#endif 2616#endif
1541 2617
1542void 2618#if EV_FEATURE_API
1543ev_loop_verify (EV_P) 2619void ecb_cold
2620ev_verify (EV_P) EV_THROW
1544{ 2621{
1545#if EV_VERIFY 2622#if EV_VERIFY
1546 int i; 2623 int i;
1547 WL w; 2624 WL w, w2;
1548 2625
1549 assert (activecnt >= -1); 2626 assert (activecnt >= -1);
1550 2627
1551 assert (fdchangemax >= fdchangecnt); 2628 assert (fdchangemax >= fdchangecnt);
1552 for (i = 0; i < fdchangecnt; ++i) 2629 for (i = 0; i < fdchangecnt; ++i)
1553 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 2630 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1554 2631
1555 assert (anfdmax >= 0); 2632 assert (anfdmax >= 0);
1556 for (i = 0; i < anfdmax; ++i) 2633 for (i = 0; i < anfdmax; ++i)
2634 {
2635 int j = 0;
2636
1557 for (w = anfds [i].head; w; w = w->next) 2637 for (w = w2 = anfds [i].head; w; w = w->next)
1558 { 2638 {
1559 verify_watcher (EV_A_ (W)w); 2639 verify_watcher (EV_A_ (W)w);
2640
2641 if (j++ & 1)
2642 {
2643 assert (("libev: io watcher list contains a loop", w != w2));
2644 w2 = w2->next;
2645 }
2646
1560 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 2647 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1561 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2648 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1562 } 2649 }
2650 }
1563 2651
1564 assert (timermax >= timercnt); 2652 assert (timermax >= timercnt);
1565 verify_heap (EV_A_ timers, timercnt); 2653 verify_heap (EV_A_ timers, timercnt);
1566 2654
1567#if EV_PERIODIC_ENABLE 2655#if EV_PERIODIC_ENABLE
… …
1582#if EV_FORK_ENABLE 2670#if EV_FORK_ENABLE
1583 assert (forkmax >= forkcnt); 2671 assert (forkmax >= forkcnt);
1584 array_verify (EV_A_ (W *)forks, forkcnt); 2672 array_verify (EV_A_ (W *)forks, forkcnt);
1585#endif 2673#endif
1586 2674
2675#if EV_CLEANUP_ENABLE
2676 assert (cleanupmax >= cleanupcnt);
2677 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2678#endif
2679
1587#if EV_ASYNC_ENABLE 2680#if EV_ASYNC_ENABLE
1588 assert (asyncmax >= asynccnt); 2681 assert (asyncmax >= asynccnt);
1589 array_verify (EV_A_ (W *)asyncs, asynccnt); 2682 array_verify (EV_A_ (W *)asyncs, asynccnt);
1590#endif 2683#endif
1591 2684
2685#if EV_PREPARE_ENABLE
1592 assert (preparemax >= preparecnt); 2686 assert (preparemax >= preparecnt);
1593 array_verify (EV_A_ (W *)prepares, preparecnt); 2687 array_verify (EV_A_ (W *)prepares, preparecnt);
2688#endif
1594 2689
2690#if EV_CHECK_ENABLE
1595 assert (checkmax >= checkcnt); 2691 assert (checkmax >= checkcnt);
1596 array_verify (EV_A_ (W *)checks, checkcnt); 2692 array_verify (EV_A_ (W *)checks, checkcnt);
2693#endif
1597 2694
1598# if 0 2695# if 0
2696#if EV_CHILD_ENABLE
1599 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2697 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1600 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2698 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2699#endif
1601# endif 2700# endif
1602#endif 2701#endif
1603} 2702}
1604 2703#endif
1605#endif /* multiplicity */
1606 2704
1607#if EV_MULTIPLICITY 2705#if EV_MULTIPLICITY
1608struct ev_loop * 2706struct ev_loop * ecb_cold
1609ev_default_loop_init (unsigned int flags)
1610#else 2707#else
1611int 2708int
2709#endif
1612ev_default_loop (unsigned int flags) 2710ev_default_loop (unsigned int flags) EV_THROW
1613#endif
1614{ 2711{
1615 if (!ev_default_loop_ptr) 2712 if (!ev_default_loop_ptr)
1616 { 2713 {
1617#if EV_MULTIPLICITY 2714#if EV_MULTIPLICITY
1618 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2715 EV_P = ev_default_loop_ptr = &default_loop_struct;
1619#else 2716#else
1620 ev_default_loop_ptr = 1; 2717 ev_default_loop_ptr = 1;
1621#endif 2718#endif
1622 2719
1623 loop_init (EV_A_ flags); 2720 loop_init (EV_A_ flags);
1624 2721
1625 if (ev_backend (EV_A)) 2722 if (ev_backend (EV_A))
1626 { 2723 {
1627#ifndef _WIN32 2724#if EV_CHILD_ENABLE
1628 ev_signal_init (&childev, childcb, SIGCHLD); 2725 ev_signal_init (&childev, childcb, SIGCHLD);
1629 ev_set_priority (&childev, EV_MAXPRI); 2726 ev_set_priority (&childev, EV_MAXPRI);
1630 ev_signal_start (EV_A_ &childev); 2727 ev_signal_start (EV_A_ &childev);
1631 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2728 ev_unref (EV_A); /* child watcher should not keep loop alive */
1632#endif 2729#endif
… …
1637 2734
1638 return ev_default_loop_ptr; 2735 return ev_default_loop_ptr;
1639} 2736}
1640 2737
1641void 2738void
1642ev_default_destroy (void) 2739ev_loop_fork (EV_P) EV_THROW
1643{ 2740{
1644#if EV_MULTIPLICITY 2741 postfork = 1;
1645 struct ev_loop *loop = ev_default_loop_ptr;
1646#endif
1647
1648 ev_default_loop_ptr = 0;
1649
1650#ifndef _WIN32
1651 ev_ref (EV_A); /* child watcher */
1652 ev_signal_stop (EV_A_ &childev);
1653#endif
1654
1655 loop_destroy (EV_A);
1656}
1657
1658void
1659ev_default_fork (void)
1660{
1661#if EV_MULTIPLICITY
1662 struct ev_loop *loop = ev_default_loop_ptr;
1663#endif
1664
1665 postfork = 1; /* must be in line with ev_loop_fork */
1666} 2742}
1667 2743
1668/*****************************************************************************/ 2744/*****************************************************************************/
1669 2745
1670void 2746void
1671ev_invoke (EV_P_ void *w, int revents) 2747ev_invoke (EV_P_ void *w, int revents)
1672{ 2748{
1673 EV_CB_INVOKE ((W)w, revents); 2749 EV_CB_INVOKE ((W)w, revents);
1674} 2750}
1675 2751
1676void inline_speed 2752unsigned int
1677call_pending (EV_P) 2753ev_pending_count (EV_P) EV_THROW
1678{ 2754{
1679 int pri; 2755 int pri;
2756 unsigned int count = 0;
1680 2757
1681 for (pri = NUMPRI; pri--; ) 2758 for (pri = NUMPRI; pri--; )
2759 count += pendingcnt [pri];
2760
2761 return count;
2762}
2763
2764void noinline
2765ev_invoke_pending (EV_P)
2766{
2767 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
1682 while (pendingcnt [pri]) 2768 while (pendingcnt [pendingpri])
1683 { 2769 {
1684 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2770 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1685 2771
1686 if (expect_true (p->w))
1687 {
1688 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1689
1690 p->w->pending = 0; 2772 p->w->pending = 0;
1691 EV_CB_INVOKE (p->w, p->events); 2773 EV_CB_INVOKE (p->w, p->events);
1692 EV_FREQUENT_CHECK; 2774 EV_FREQUENT_CHECK;
1693 }
1694 } 2775 }
1695} 2776}
1696 2777
1697#if EV_IDLE_ENABLE 2778#if EV_IDLE_ENABLE
1698void inline_size 2779/* make idle watchers pending. this handles the "call-idle */
2780/* only when higher priorities are idle" logic */
2781inline_size void
1699idle_reify (EV_P) 2782idle_reify (EV_P)
1700{ 2783{
1701 if (expect_false (idleall)) 2784 if (expect_false (idleall))
1702 { 2785 {
1703 int pri; 2786 int pri;
… …
1715 } 2798 }
1716 } 2799 }
1717} 2800}
1718#endif 2801#endif
1719 2802
1720void inline_size 2803/* make timers pending */
2804inline_size void
1721timers_reify (EV_P) 2805timers_reify (EV_P)
1722{ 2806{
1723 EV_FREQUENT_CHECK; 2807 EV_FREQUENT_CHECK;
1724 2808
1725 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2809 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1726 { 2810 {
1727 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2811 do
1728
1729 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1730
1731 /* first reschedule or stop timer */
1732 if (w->repeat)
1733 { 2812 {
2813 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2814
2815 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2816
2817 /* first reschedule or stop timer */
2818 if (w->repeat)
2819 {
1734 ev_at (w) += w->repeat; 2820 ev_at (w) += w->repeat;
1735 if (ev_at (w) < mn_now) 2821 if (ev_at (w) < mn_now)
1736 ev_at (w) = mn_now; 2822 ev_at (w) = mn_now;
1737 2823
1738 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2824 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1739 2825
1740 ANHE_at_cache (timers [HEAP0]); 2826 ANHE_at_cache (timers [HEAP0]);
1741 downheap (timers, timercnt, HEAP0); 2827 downheap (timers, timercnt, HEAP0);
2828 }
2829 else
2830 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2831
2832 EV_FREQUENT_CHECK;
2833 feed_reverse (EV_A_ (W)w);
1742 } 2834 }
1743 else 2835 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1744 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1745 2836
1746 EV_FREQUENT_CHECK; 2837 feed_reverse_done (EV_A_ EV_TIMER);
1747 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1748 } 2838 }
1749} 2839}
1750 2840
1751#if EV_PERIODIC_ENABLE 2841#if EV_PERIODIC_ENABLE
1752void inline_size 2842
2843static void noinline
2844periodic_recalc (EV_P_ ev_periodic *w)
2845{
2846 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2847 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2848
2849 /* the above almost always errs on the low side */
2850 while (at <= ev_rt_now)
2851 {
2852 ev_tstamp nat = at + w->interval;
2853
2854 /* when resolution fails us, we use ev_rt_now */
2855 if (expect_false (nat == at))
2856 {
2857 at = ev_rt_now;
2858 break;
2859 }
2860
2861 at = nat;
2862 }
2863
2864 ev_at (w) = at;
2865}
2866
2867/* make periodics pending */
2868inline_size void
1753periodics_reify (EV_P) 2869periodics_reify (EV_P)
1754{ 2870{
1755 EV_FREQUENT_CHECK; 2871 EV_FREQUENT_CHECK;
1756 2872
1757 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2873 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1758 { 2874 {
1759 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2875 do
1760
1761 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1762
1763 /* first reschedule or stop timer */
1764 if (w->reschedule_cb)
1765 { 2876 {
2877 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2878
2879 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2880
2881 /* first reschedule or stop timer */
2882 if (w->reschedule_cb)
2883 {
1766 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2884 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1767 2885
1768 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2886 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1769 2887
1770 ANHE_at_cache (periodics [HEAP0]); 2888 ANHE_at_cache (periodics [HEAP0]);
1771 downheap (periodics, periodiccnt, HEAP0); 2889 downheap (periodics, periodiccnt, HEAP0);
2890 }
2891 else if (w->interval)
2892 {
2893 periodic_recalc (EV_A_ w);
2894 ANHE_at_cache (periodics [HEAP0]);
2895 downheap (periodics, periodiccnt, HEAP0);
2896 }
2897 else
2898 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2899
2900 EV_FREQUENT_CHECK;
2901 feed_reverse (EV_A_ (W)w);
1772 } 2902 }
1773 else if (w->interval) 2903 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1774 {
1775 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1776 /* if next trigger time is not sufficiently in the future, put it there */
1777 /* this might happen because of floating point inexactness */
1778 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1779 {
1780 ev_at (w) += w->interval;
1781 2904
1782 /* if interval is unreasonably low we might still have a time in the past */
1783 /* so correct this. this will make the periodic very inexact, but the user */
1784 /* has effectively asked to get triggered more often than possible */
1785 if (ev_at (w) < ev_rt_now)
1786 ev_at (w) = ev_rt_now;
1787 }
1788
1789 ANHE_at_cache (periodics [HEAP0]);
1790 downheap (periodics, periodiccnt, HEAP0);
1791 }
1792 else
1793 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1794
1795 EV_FREQUENT_CHECK;
1796 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2905 feed_reverse_done (EV_A_ EV_PERIODIC);
1797 } 2906 }
1798} 2907}
1799 2908
2909/* simply recalculate all periodics */
2910/* TODO: maybe ensure that at least one event happens when jumping forward? */
1800static void noinline 2911static void noinline ecb_cold
1801periodics_reschedule (EV_P) 2912periodics_reschedule (EV_P)
1802{ 2913{
1803 int i; 2914 int i;
1804 2915
1805 /* adjust periodics after time jump */ 2916 /* adjust periodics after time jump */
… …
1808 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2919 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1809 2920
1810 if (w->reschedule_cb) 2921 if (w->reschedule_cb)
1811 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2922 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1812 else if (w->interval) 2923 else if (w->interval)
1813 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2924 periodic_recalc (EV_A_ w);
1814 2925
1815 ANHE_at_cache (periodics [i]); 2926 ANHE_at_cache (periodics [i]);
1816 } 2927 }
1817 2928
1818 reheap (periodics, periodiccnt); 2929 reheap (periodics, periodiccnt);
1819} 2930}
1820#endif 2931#endif
1821 2932
1822void inline_speed 2933/* adjust all timers by a given offset */
2934static void noinline ecb_cold
2935timers_reschedule (EV_P_ ev_tstamp adjust)
2936{
2937 int i;
2938
2939 for (i = 0; i < timercnt; ++i)
2940 {
2941 ANHE *he = timers + i + HEAP0;
2942 ANHE_w (*he)->at += adjust;
2943 ANHE_at_cache (*he);
2944 }
2945}
2946
2947/* fetch new monotonic and realtime times from the kernel */
2948/* also detect if there was a timejump, and act accordingly */
2949inline_speed void
1823time_update (EV_P_ ev_tstamp max_block) 2950time_update (EV_P_ ev_tstamp max_block)
1824{ 2951{
1825 int i;
1826
1827#if EV_USE_MONOTONIC 2952#if EV_USE_MONOTONIC
1828 if (expect_true (have_monotonic)) 2953 if (expect_true (have_monotonic))
1829 { 2954 {
2955 int i;
1830 ev_tstamp odiff = rtmn_diff; 2956 ev_tstamp odiff = rtmn_diff;
1831 2957
1832 mn_now = get_clock (); 2958 mn_now = get_clock ();
1833 2959
1834 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2960 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1850 * doesn't hurt either as we only do this on time-jumps or 2976 * doesn't hurt either as we only do this on time-jumps or
1851 * in the unlikely event of having been preempted here. 2977 * in the unlikely event of having been preempted here.
1852 */ 2978 */
1853 for (i = 4; --i; ) 2979 for (i = 4; --i; )
1854 { 2980 {
2981 ev_tstamp diff;
1855 rtmn_diff = ev_rt_now - mn_now; 2982 rtmn_diff = ev_rt_now - mn_now;
1856 2983
2984 diff = odiff - rtmn_diff;
2985
1857 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2986 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1858 return; /* all is well */ 2987 return; /* all is well */
1859 2988
1860 ev_rt_now = ev_time (); 2989 ev_rt_now = ev_time ();
1861 mn_now = get_clock (); 2990 mn_now = get_clock ();
1862 now_floor = mn_now; 2991 now_floor = mn_now;
1863 } 2992 }
1864 2993
2994 /* no timer adjustment, as the monotonic clock doesn't jump */
2995 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1865# if EV_PERIODIC_ENABLE 2996# if EV_PERIODIC_ENABLE
1866 periodics_reschedule (EV_A); 2997 periodics_reschedule (EV_A);
1867# endif 2998# endif
1868 /* no timer adjustment, as the monotonic clock doesn't jump */
1869 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1870 } 2999 }
1871 else 3000 else
1872#endif 3001#endif
1873 { 3002 {
1874 ev_rt_now = ev_time (); 3003 ev_rt_now = ev_time ();
1875 3004
1876 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 3005 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1877 { 3006 {
3007 /* adjust timers. this is easy, as the offset is the same for all of them */
3008 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1878#if EV_PERIODIC_ENABLE 3009#if EV_PERIODIC_ENABLE
1879 periodics_reschedule (EV_A); 3010 periodics_reschedule (EV_A);
1880#endif 3011#endif
1881 /* adjust timers. this is easy, as the offset is the same for all of them */
1882 for (i = 0; i < timercnt; ++i)
1883 {
1884 ANHE *he = timers + i + HEAP0;
1885 ANHE_w (*he)->at += ev_rt_now - mn_now;
1886 ANHE_at_cache (*he);
1887 }
1888 } 3012 }
1889 3013
1890 mn_now = ev_rt_now; 3014 mn_now = ev_rt_now;
1891 } 3015 }
1892} 3016}
1893 3017
1894void 3018int
1895ev_ref (EV_P)
1896{
1897 ++activecnt;
1898}
1899
1900void
1901ev_unref (EV_P)
1902{
1903 --activecnt;
1904}
1905
1906void
1907ev_now_update (EV_P)
1908{
1909 time_update (EV_A_ 1e100);
1910}
1911
1912static int loop_done;
1913
1914void
1915ev_loop (EV_P_ int flags) 3019ev_run (EV_P_ int flags)
1916{ 3020{
3021#if EV_FEATURE_API
3022 ++loop_depth;
3023#endif
3024
3025 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
3026
1917 loop_done = EVUNLOOP_CANCEL; 3027 loop_done = EVBREAK_CANCEL;
1918 3028
1919 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 3029 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1920 3030
1921 do 3031 do
1922 { 3032 {
1923#if EV_VERIFY >= 2 3033#if EV_VERIFY >= 2
1924 ev_loop_verify (EV_A); 3034 ev_verify (EV_A);
1925#endif 3035#endif
1926 3036
1927#ifndef _WIN32 3037#ifndef _WIN32
1928 if (expect_false (curpid)) /* penalise the forking check even more */ 3038 if (expect_false (curpid)) /* penalise the forking check even more */
1929 if (expect_false (getpid () != curpid)) 3039 if (expect_false (getpid () != curpid))
… …
1937 /* we might have forked, so queue fork handlers */ 3047 /* we might have forked, so queue fork handlers */
1938 if (expect_false (postfork)) 3048 if (expect_false (postfork))
1939 if (forkcnt) 3049 if (forkcnt)
1940 { 3050 {
1941 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3051 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1942 call_pending (EV_A); 3052 EV_INVOKE_PENDING;
1943 } 3053 }
1944#endif 3054#endif
1945 3055
3056#if EV_PREPARE_ENABLE
1946 /* queue prepare watchers (and execute them) */ 3057 /* queue prepare watchers (and execute them) */
1947 if (expect_false (preparecnt)) 3058 if (expect_false (preparecnt))
1948 { 3059 {
1949 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1950 call_pending (EV_A); 3061 EV_INVOKE_PENDING;
1951 } 3062 }
3063#endif
1952 3064
1953 if (expect_false (!activecnt)) 3065 if (expect_false (loop_done))
1954 break; 3066 break;
1955 3067
1956 /* we might have forked, so reify kernel state if necessary */ 3068 /* we might have forked, so reify kernel state if necessary */
1957 if (expect_false (postfork)) 3069 if (expect_false (postfork))
1958 loop_fork (EV_A); 3070 loop_fork (EV_A);
… …
1963 /* calculate blocking time */ 3075 /* calculate blocking time */
1964 { 3076 {
1965 ev_tstamp waittime = 0.; 3077 ev_tstamp waittime = 0.;
1966 ev_tstamp sleeptime = 0.; 3078 ev_tstamp sleeptime = 0.;
1967 3079
3080 /* remember old timestamp for io_blocktime calculation */
3081 ev_tstamp prev_mn_now = mn_now;
3082
3083 /* update time to cancel out callback processing overhead */
3084 time_update (EV_A_ 1e100);
3085
3086 /* from now on, we want a pipe-wake-up */
3087 pipe_write_wanted = 1;
3088
3089 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3090
1968 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3091 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1969 { 3092 {
1970 /* update time to cancel out callback processing overhead */
1971 time_update (EV_A_ 1e100);
1972
1973 waittime = MAX_BLOCKTIME; 3093 waittime = MAX_BLOCKTIME;
1974 3094
1975 if (timercnt) 3095 if (timercnt)
1976 { 3096 {
1977 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3097 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1978 if (waittime > to) waittime = to; 3098 if (waittime > to) waittime = to;
1979 } 3099 }
1980 3100
1981#if EV_PERIODIC_ENABLE 3101#if EV_PERIODIC_ENABLE
1982 if (periodiccnt) 3102 if (periodiccnt)
1983 { 3103 {
1984 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3104 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1985 if (waittime > to) waittime = to; 3105 if (waittime > to) waittime = to;
1986 } 3106 }
1987#endif 3107#endif
1988 3108
3109 /* don't let timeouts decrease the waittime below timeout_blocktime */
1989 if (expect_false (waittime < timeout_blocktime)) 3110 if (expect_false (waittime < timeout_blocktime))
1990 waittime = timeout_blocktime; 3111 waittime = timeout_blocktime;
1991 3112
1992 sleeptime = waittime - backend_fudge; 3113 /* at this point, we NEED to wait, so we have to ensure */
3114 /* to pass a minimum nonzero value to the backend */
3115 if (expect_false (waittime < backend_mintime))
3116 waittime = backend_mintime;
1993 3117
3118 /* extra check because io_blocktime is commonly 0 */
1994 if (expect_true (sleeptime > io_blocktime)) 3119 if (expect_false (io_blocktime))
1995 sleeptime = io_blocktime;
1996
1997 if (sleeptime)
1998 { 3120 {
3121 sleeptime = io_blocktime - (mn_now - prev_mn_now);
3122
3123 if (sleeptime > waittime - backend_mintime)
3124 sleeptime = waittime - backend_mintime;
3125
3126 if (expect_true (sleeptime > 0.))
3127 {
1999 ev_sleep (sleeptime); 3128 ev_sleep (sleeptime);
2000 waittime -= sleeptime; 3129 waittime -= sleeptime;
3130 }
2001 } 3131 }
2002 } 3132 }
2003 3133
3134#if EV_FEATURE_API
2004 ++loop_count; 3135 ++loop_count;
3136#endif
3137 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2005 backend_poll (EV_A_ waittime); 3138 backend_poll (EV_A_ waittime);
3139 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3140
3141 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3142
3143 ECB_MEMORY_FENCE_ACQUIRE;
3144 if (pipe_write_skipped)
3145 {
3146 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3147 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3148 }
3149
2006 3150
2007 /* update ev_rt_now, do magic */ 3151 /* update ev_rt_now, do magic */
2008 time_update (EV_A_ waittime + sleeptime); 3152 time_update (EV_A_ waittime + sleeptime);
2009 } 3153 }
2010 3154
… …
2017#if EV_IDLE_ENABLE 3161#if EV_IDLE_ENABLE
2018 /* queue idle watchers unless other events are pending */ 3162 /* queue idle watchers unless other events are pending */
2019 idle_reify (EV_A); 3163 idle_reify (EV_A);
2020#endif 3164#endif
2021 3165
3166#if EV_CHECK_ENABLE
2022 /* queue check watchers, to be executed first */ 3167 /* queue check watchers, to be executed first */
2023 if (expect_false (checkcnt)) 3168 if (expect_false (checkcnt))
2024 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3169 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3170#endif
2025 3171
2026 call_pending (EV_A); 3172 EV_INVOKE_PENDING;
2027 } 3173 }
2028 while (expect_true ( 3174 while (expect_true (
2029 activecnt 3175 activecnt
2030 && !loop_done 3176 && !loop_done
2031 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3177 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2032 )); 3178 ));
2033 3179
2034 if (loop_done == EVUNLOOP_ONE) 3180 if (loop_done == EVBREAK_ONE)
2035 loop_done = EVUNLOOP_CANCEL; 3181 loop_done = EVBREAK_CANCEL;
3182
3183#if EV_FEATURE_API
3184 --loop_depth;
3185#endif
3186
3187 return activecnt;
2036} 3188}
2037 3189
2038void 3190void
2039ev_unloop (EV_P_ int how) 3191ev_break (EV_P_ int how) EV_THROW
2040{ 3192{
2041 loop_done = how; 3193 loop_done = how;
2042} 3194}
2043 3195
3196void
3197ev_ref (EV_P) EV_THROW
3198{
3199 ++activecnt;
3200}
3201
3202void
3203ev_unref (EV_P) EV_THROW
3204{
3205 --activecnt;
3206}
3207
3208void
3209ev_now_update (EV_P) EV_THROW
3210{
3211 time_update (EV_A_ 1e100);
3212}
3213
3214void
3215ev_suspend (EV_P) EV_THROW
3216{
3217 ev_now_update (EV_A);
3218}
3219
3220void
3221ev_resume (EV_P) EV_THROW
3222{
3223 ev_tstamp mn_prev = mn_now;
3224
3225 ev_now_update (EV_A);
3226 timers_reschedule (EV_A_ mn_now - mn_prev);
3227#if EV_PERIODIC_ENABLE
3228 /* TODO: really do this? */
3229 periodics_reschedule (EV_A);
3230#endif
3231}
3232
2044/*****************************************************************************/ 3233/*****************************************************************************/
3234/* singly-linked list management, used when the expected list length is short */
2045 3235
2046void inline_size 3236inline_size void
2047wlist_add (WL *head, WL elem) 3237wlist_add (WL *head, WL elem)
2048{ 3238{
2049 elem->next = *head; 3239 elem->next = *head;
2050 *head = elem; 3240 *head = elem;
2051} 3241}
2052 3242
2053void inline_size 3243inline_size void
2054wlist_del (WL *head, WL elem) 3244wlist_del (WL *head, WL elem)
2055{ 3245{
2056 while (*head) 3246 while (*head)
2057 { 3247 {
2058 if (*head == elem) 3248 if (expect_true (*head == elem))
2059 { 3249 {
2060 *head = elem->next; 3250 *head = elem->next;
2061 return; 3251 break;
2062 } 3252 }
2063 3253
2064 head = &(*head)->next; 3254 head = &(*head)->next;
2065 } 3255 }
2066} 3256}
2067 3257
2068void inline_speed 3258/* internal, faster, version of ev_clear_pending */
3259inline_speed void
2069clear_pending (EV_P_ W w) 3260clear_pending (EV_P_ W w)
2070{ 3261{
2071 if (w->pending) 3262 if (w->pending)
2072 { 3263 {
2073 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3264 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2074 w->pending = 0; 3265 w->pending = 0;
2075 } 3266 }
2076} 3267}
2077 3268
2078int 3269int
2079ev_clear_pending (EV_P_ void *w) 3270ev_clear_pending (EV_P_ void *w) EV_THROW
2080{ 3271{
2081 W w_ = (W)w; 3272 W w_ = (W)w;
2082 int pending = w_->pending; 3273 int pending = w_->pending;
2083 3274
2084 if (expect_true (pending)) 3275 if (expect_true (pending))
2085 { 3276 {
2086 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3277 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3278 p->w = (W)&pending_w;
2087 w_->pending = 0; 3279 w_->pending = 0;
2088 p->w = 0;
2089 return p->events; 3280 return p->events;
2090 } 3281 }
2091 else 3282 else
2092 return 0; 3283 return 0;
2093} 3284}
2094 3285
2095void inline_size 3286inline_size void
2096pri_adjust (EV_P_ W w) 3287pri_adjust (EV_P_ W w)
2097{ 3288{
2098 int pri = w->priority; 3289 int pri = ev_priority (w);
2099 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3290 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2100 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3291 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2101 w->priority = pri; 3292 ev_set_priority (w, pri);
2102} 3293}
2103 3294
2104void inline_speed 3295inline_speed void
2105ev_start (EV_P_ W w, int active) 3296ev_start (EV_P_ W w, int active)
2106{ 3297{
2107 pri_adjust (EV_A_ w); 3298 pri_adjust (EV_A_ w);
2108 w->active = active; 3299 w->active = active;
2109 ev_ref (EV_A); 3300 ev_ref (EV_A);
2110} 3301}
2111 3302
2112void inline_size 3303inline_size void
2113ev_stop (EV_P_ W w) 3304ev_stop (EV_P_ W w)
2114{ 3305{
2115 ev_unref (EV_A); 3306 ev_unref (EV_A);
2116 w->active = 0; 3307 w->active = 0;
2117} 3308}
2118 3309
2119/*****************************************************************************/ 3310/*****************************************************************************/
2120 3311
2121void noinline 3312void noinline
2122ev_io_start (EV_P_ ev_io *w) 3313ev_io_start (EV_P_ ev_io *w) EV_THROW
2123{ 3314{
2124 int fd = w->fd; 3315 int fd = w->fd;
2125 3316
2126 if (expect_false (ev_is_active (w))) 3317 if (expect_false (ev_is_active (w)))
2127 return; 3318 return;
2128 3319
2129 assert (("ev_io_start called with negative fd", fd >= 0)); 3320 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2130 assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); 3321 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2131 3322
2132 EV_FREQUENT_CHECK; 3323 EV_FREQUENT_CHECK;
2133 3324
2134 ev_start (EV_A_ (W)w, 1); 3325 ev_start (EV_A_ (W)w, 1);
2135 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3326 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2136 wlist_add (&anfds[fd].head, (WL)w); 3327 wlist_add (&anfds[fd].head, (WL)w);
2137 3328
3329 /* common bug, apparently */
3330 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3331
2138 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 3332 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2139 w->events &= ~EV_IOFDSET; 3333 w->events &= ~EV__IOFDSET;
2140 3334
2141 EV_FREQUENT_CHECK; 3335 EV_FREQUENT_CHECK;
2142} 3336}
2143 3337
2144void noinline 3338void noinline
2145ev_io_stop (EV_P_ ev_io *w) 3339ev_io_stop (EV_P_ ev_io *w) EV_THROW
2146{ 3340{
2147 clear_pending (EV_A_ (W)w); 3341 clear_pending (EV_A_ (W)w);
2148 if (expect_false (!ev_is_active (w))) 3342 if (expect_false (!ev_is_active (w)))
2149 return; 3343 return;
2150 3344
2151 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3345 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2152 3346
2153 EV_FREQUENT_CHECK; 3347 EV_FREQUENT_CHECK;
2154 3348
2155 wlist_del (&anfds[w->fd].head, (WL)w); 3349 wlist_del (&anfds[w->fd].head, (WL)w);
2156 ev_stop (EV_A_ (W)w); 3350 ev_stop (EV_A_ (W)w);
2157 3351
2158 fd_change (EV_A_ w->fd, 1); 3352 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2159 3353
2160 EV_FREQUENT_CHECK; 3354 EV_FREQUENT_CHECK;
2161} 3355}
2162 3356
2163void noinline 3357void noinline
2164ev_timer_start (EV_P_ ev_timer *w) 3358ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2165{ 3359{
2166 if (expect_false (ev_is_active (w))) 3360 if (expect_false (ev_is_active (w)))
2167 return; 3361 return;
2168 3362
2169 ev_at (w) += mn_now; 3363 ev_at (w) += mn_now;
2170 3364
2171 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 3365 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2172 3366
2173 EV_FREQUENT_CHECK; 3367 EV_FREQUENT_CHECK;
2174 3368
2175 ++timercnt; 3369 ++timercnt;
2176 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3370 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2179 ANHE_at_cache (timers [ev_active (w)]); 3373 ANHE_at_cache (timers [ev_active (w)]);
2180 upheap (timers, ev_active (w)); 3374 upheap (timers, ev_active (w));
2181 3375
2182 EV_FREQUENT_CHECK; 3376 EV_FREQUENT_CHECK;
2183 3377
2184 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3378 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2185} 3379}
2186 3380
2187void noinline 3381void noinline
2188ev_timer_stop (EV_P_ ev_timer *w) 3382ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2189{ 3383{
2190 clear_pending (EV_A_ (W)w); 3384 clear_pending (EV_A_ (W)w);
2191 if (expect_false (!ev_is_active (w))) 3385 if (expect_false (!ev_is_active (w)))
2192 return; 3386 return;
2193 3387
2194 EV_FREQUENT_CHECK; 3388 EV_FREQUENT_CHECK;
2195 3389
2196 { 3390 {
2197 int active = ev_active (w); 3391 int active = ev_active (w);
2198 3392
2199 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 3393 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2200 3394
2201 --timercnt; 3395 --timercnt;
2202 3396
2203 if (expect_true (active < timercnt + HEAP0)) 3397 if (expect_true (active < timercnt + HEAP0))
2204 { 3398 {
2205 timers [active] = timers [timercnt + HEAP0]; 3399 timers [active] = timers [timercnt + HEAP0];
2206 adjustheap (timers, timercnt, active); 3400 adjustheap (timers, timercnt, active);
2207 } 3401 }
2208 } 3402 }
2209 3403
2210 EV_FREQUENT_CHECK;
2211
2212 ev_at (w) -= mn_now; 3404 ev_at (w) -= mn_now;
2213 3405
2214 ev_stop (EV_A_ (W)w); 3406 ev_stop (EV_A_ (W)w);
3407
3408 EV_FREQUENT_CHECK;
2215} 3409}
2216 3410
2217void noinline 3411void noinline
2218ev_timer_again (EV_P_ ev_timer *w) 3412ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2219{ 3413{
2220 EV_FREQUENT_CHECK; 3414 EV_FREQUENT_CHECK;
3415
3416 clear_pending (EV_A_ (W)w);
2221 3417
2222 if (ev_is_active (w)) 3418 if (ev_is_active (w))
2223 { 3419 {
2224 if (w->repeat) 3420 if (w->repeat)
2225 { 3421 {
… …
2237 } 3433 }
2238 3434
2239 EV_FREQUENT_CHECK; 3435 EV_FREQUENT_CHECK;
2240} 3436}
2241 3437
3438ev_tstamp
3439ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3440{
3441 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3442}
3443
2242#if EV_PERIODIC_ENABLE 3444#if EV_PERIODIC_ENABLE
2243void noinline 3445void noinline
2244ev_periodic_start (EV_P_ ev_periodic *w) 3446ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2245{ 3447{
2246 if (expect_false (ev_is_active (w))) 3448 if (expect_false (ev_is_active (w)))
2247 return; 3449 return;
2248 3450
2249 if (w->reschedule_cb) 3451 if (w->reschedule_cb)
2250 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3452 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2251 else if (w->interval) 3453 else if (w->interval)
2252 { 3454 {
2253 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 3455 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2254 /* this formula differs from the one in periodic_reify because we do not always round up */ 3456 periodic_recalc (EV_A_ w);
2255 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2256 } 3457 }
2257 else 3458 else
2258 ev_at (w) = w->offset; 3459 ev_at (w) = w->offset;
2259 3460
2260 EV_FREQUENT_CHECK; 3461 EV_FREQUENT_CHECK;
… …
2266 ANHE_at_cache (periodics [ev_active (w)]); 3467 ANHE_at_cache (periodics [ev_active (w)]);
2267 upheap (periodics, ev_active (w)); 3468 upheap (periodics, ev_active (w));
2268 3469
2269 EV_FREQUENT_CHECK; 3470 EV_FREQUENT_CHECK;
2270 3471
2271 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3472 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2272} 3473}
2273 3474
2274void noinline 3475void noinline
2275ev_periodic_stop (EV_P_ ev_periodic *w) 3476ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2276{ 3477{
2277 clear_pending (EV_A_ (W)w); 3478 clear_pending (EV_A_ (W)w);
2278 if (expect_false (!ev_is_active (w))) 3479 if (expect_false (!ev_is_active (w)))
2279 return; 3480 return;
2280 3481
2281 EV_FREQUENT_CHECK; 3482 EV_FREQUENT_CHECK;
2282 3483
2283 { 3484 {
2284 int active = ev_active (w); 3485 int active = ev_active (w);
2285 3486
2286 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 3487 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2287 3488
2288 --periodiccnt; 3489 --periodiccnt;
2289 3490
2290 if (expect_true (active < periodiccnt + HEAP0)) 3491 if (expect_true (active < periodiccnt + HEAP0))
2291 { 3492 {
2292 periodics [active] = periodics [periodiccnt + HEAP0]; 3493 periodics [active] = periodics [periodiccnt + HEAP0];
2293 adjustheap (periodics, periodiccnt, active); 3494 adjustheap (periodics, periodiccnt, active);
2294 } 3495 }
2295 } 3496 }
2296 3497
2297 EV_FREQUENT_CHECK;
2298
2299 ev_stop (EV_A_ (W)w); 3498 ev_stop (EV_A_ (W)w);
3499
3500 EV_FREQUENT_CHECK;
2300} 3501}
2301 3502
2302void noinline 3503void noinline
2303ev_periodic_again (EV_P_ ev_periodic *w) 3504ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2304{ 3505{
2305 /* TODO: use adjustheap and recalculation */ 3506 /* TODO: use adjustheap and recalculation */
2306 ev_periodic_stop (EV_A_ w); 3507 ev_periodic_stop (EV_A_ w);
2307 ev_periodic_start (EV_A_ w); 3508 ev_periodic_start (EV_A_ w);
2308} 3509}
… …
2310 3511
2311#ifndef SA_RESTART 3512#ifndef SA_RESTART
2312# define SA_RESTART 0 3513# define SA_RESTART 0
2313#endif 3514#endif
2314 3515
3516#if EV_SIGNAL_ENABLE
3517
2315void noinline 3518void noinline
2316ev_signal_start (EV_P_ ev_signal *w) 3519ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2317{ 3520{
2318#if EV_MULTIPLICITY
2319 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2320#endif
2321 if (expect_false (ev_is_active (w))) 3521 if (expect_false (ev_is_active (w)))
2322 return; 3522 return;
2323 3523
2324 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3524 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2325 3525
2326 evpipe_init (EV_A); 3526#if EV_MULTIPLICITY
3527 assert (("libev: a signal must not be attached to two different loops",
3528 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2327 3529
2328 EV_FREQUENT_CHECK; 3530 signals [w->signum - 1].loop = EV_A;
3531#endif
2329 3532
3533 EV_FREQUENT_CHECK;
3534
3535#if EV_USE_SIGNALFD
3536 if (sigfd == -2)
2330 { 3537 {
2331#ifndef _WIN32 3538 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2332 sigset_t full, prev; 3539 if (sigfd < 0 && errno == EINVAL)
2333 sigfillset (&full); 3540 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2334 sigprocmask (SIG_SETMASK, &full, &prev);
2335#endif
2336 3541
2337 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3542 if (sigfd >= 0)
3543 {
3544 fd_intern (sigfd); /* doing it twice will not hurt */
2338 3545
2339#ifndef _WIN32 3546 sigemptyset (&sigfd_set);
2340 sigprocmask (SIG_SETMASK, &prev, 0); 3547
2341#endif 3548 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3549 ev_set_priority (&sigfd_w, EV_MAXPRI);
3550 ev_io_start (EV_A_ &sigfd_w);
3551 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3552 }
2342 } 3553 }
3554
3555 if (sigfd >= 0)
3556 {
3557 /* TODO: check .head */
3558 sigaddset (&sigfd_set, w->signum);
3559 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3560
3561 signalfd (sigfd, &sigfd_set, 0);
3562 }
3563#endif
2343 3564
2344 ev_start (EV_A_ (W)w, 1); 3565 ev_start (EV_A_ (W)w, 1);
2345 wlist_add (&signals [w->signum - 1].head, (WL)w); 3566 wlist_add (&signals [w->signum - 1].head, (WL)w);
2346 3567
2347 if (!((WL)w)->next) 3568 if (!((WL)w)->next)
3569# if EV_USE_SIGNALFD
3570 if (sigfd < 0) /*TODO*/
3571# endif
2348 { 3572 {
2349#if _WIN32 3573# ifdef _WIN32
3574 evpipe_init (EV_A);
3575
2350 signal (w->signum, ev_sighandler); 3576 signal (w->signum, ev_sighandler);
2351#else 3577# else
2352 struct sigaction sa; 3578 struct sigaction sa;
3579
3580 evpipe_init (EV_A);
3581
2353 sa.sa_handler = ev_sighandler; 3582 sa.sa_handler = ev_sighandler;
2354 sigfillset (&sa.sa_mask); 3583 sigfillset (&sa.sa_mask);
2355 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3584 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2356 sigaction (w->signum, &sa, 0); 3585 sigaction (w->signum, &sa, 0);
3586
3587 if (origflags & EVFLAG_NOSIGMASK)
3588 {
3589 sigemptyset (&sa.sa_mask);
3590 sigaddset (&sa.sa_mask, w->signum);
3591 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3592 }
2357#endif 3593#endif
2358 } 3594 }
2359 3595
2360 EV_FREQUENT_CHECK; 3596 EV_FREQUENT_CHECK;
2361} 3597}
2362 3598
2363void noinline 3599void noinline
2364ev_signal_stop (EV_P_ ev_signal *w) 3600ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2365{ 3601{
2366 clear_pending (EV_A_ (W)w); 3602 clear_pending (EV_A_ (W)w);
2367 if (expect_false (!ev_is_active (w))) 3603 if (expect_false (!ev_is_active (w)))
2368 return; 3604 return;
2369 3605
… …
2371 3607
2372 wlist_del (&signals [w->signum - 1].head, (WL)w); 3608 wlist_del (&signals [w->signum - 1].head, (WL)w);
2373 ev_stop (EV_A_ (W)w); 3609 ev_stop (EV_A_ (W)w);
2374 3610
2375 if (!signals [w->signum - 1].head) 3611 if (!signals [w->signum - 1].head)
3612 {
3613#if EV_MULTIPLICITY
3614 signals [w->signum - 1].loop = 0; /* unattach from signal */
3615#endif
3616#if EV_USE_SIGNALFD
3617 if (sigfd >= 0)
3618 {
3619 sigset_t ss;
3620
3621 sigemptyset (&ss);
3622 sigaddset (&ss, w->signum);
3623 sigdelset (&sigfd_set, w->signum);
3624
3625 signalfd (sigfd, &sigfd_set, 0);
3626 sigprocmask (SIG_UNBLOCK, &ss, 0);
3627 }
3628 else
3629#endif
2376 signal (w->signum, SIG_DFL); 3630 signal (w->signum, SIG_DFL);
3631 }
2377 3632
2378 EV_FREQUENT_CHECK; 3633 EV_FREQUENT_CHECK;
2379} 3634}
3635
3636#endif
3637
3638#if EV_CHILD_ENABLE
2380 3639
2381void 3640void
2382ev_child_start (EV_P_ ev_child *w) 3641ev_child_start (EV_P_ ev_child *w) EV_THROW
2383{ 3642{
2384#if EV_MULTIPLICITY 3643#if EV_MULTIPLICITY
2385 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3644 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2386#endif 3645#endif
2387 if (expect_false (ev_is_active (w))) 3646 if (expect_false (ev_is_active (w)))
2388 return; 3647 return;
2389 3648
2390 EV_FREQUENT_CHECK; 3649 EV_FREQUENT_CHECK;
2391 3650
2392 ev_start (EV_A_ (W)w, 1); 3651 ev_start (EV_A_ (W)w, 1);
2393 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3652 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2394 3653
2395 EV_FREQUENT_CHECK; 3654 EV_FREQUENT_CHECK;
2396} 3655}
2397 3656
2398void 3657void
2399ev_child_stop (EV_P_ ev_child *w) 3658ev_child_stop (EV_P_ ev_child *w) EV_THROW
2400{ 3659{
2401 clear_pending (EV_A_ (W)w); 3660 clear_pending (EV_A_ (W)w);
2402 if (expect_false (!ev_is_active (w))) 3661 if (expect_false (!ev_is_active (w)))
2403 return; 3662 return;
2404 3663
2405 EV_FREQUENT_CHECK; 3664 EV_FREQUENT_CHECK;
2406 3665
2407 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3666 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2408 ev_stop (EV_A_ (W)w); 3667 ev_stop (EV_A_ (W)w);
2409 3668
2410 EV_FREQUENT_CHECK; 3669 EV_FREQUENT_CHECK;
2411} 3670}
3671
3672#endif
2412 3673
2413#if EV_STAT_ENABLE 3674#if EV_STAT_ENABLE
2414 3675
2415# ifdef _WIN32 3676# ifdef _WIN32
2416# undef lstat 3677# undef lstat
2417# define lstat(a,b) _stati64 (a,b) 3678# define lstat(a,b) _stati64 (a,b)
2418# endif 3679# endif
2419 3680
2420#define DEF_STAT_INTERVAL 5.0074891 3681#define DEF_STAT_INTERVAL 5.0074891
3682#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2421#define MIN_STAT_INTERVAL 0.1074891 3683#define MIN_STAT_INTERVAL 0.1074891
2422 3684
2423static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3685static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2424 3686
2425#if EV_USE_INOTIFY 3687#if EV_USE_INOTIFY
2426# define EV_INOTIFY_BUFSIZE 8192 3688
3689/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3690# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2427 3691
2428static void noinline 3692static void noinline
2429infy_add (EV_P_ ev_stat *w) 3693infy_add (EV_P_ ev_stat *w)
2430{ 3694{
2431 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); 3695 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);
2432 3696
2433 if (w->wd < 0) 3697 if (w->wd >= 0)
3698 {
3699 struct statfs sfs;
3700
3701 /* now local changes will be tracked by inotify, but remote changes won't */
3702 /* unless the filesystem is known to be local, we therefore still poll */
3703 /* also do poll on <2.6.25, but with normal frequency */
3704
3705 if (!fs_2625)
3706 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3707 else if (!statfs (w->path, &sfs)
3708 && (sfs.f_type == 0x1373 /* devfs */
3709 || sfs.f_type == 0xEF53 /* ext2/3 */
3710 || sfs.f_type == 0x3153464a /* jfs */
3711 || sfs.f_type == 0x52654973 /* reiser3 */
3712 || sfs.f_type == 0x01021994 /* tempfs */
3713 || sfs.f_type == 0x58465342 /* xfs */))
3714 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3715 else
3716 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2434 { 3717 }
2435 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3718 else
3719 {
3720 /* can't use inotify, continue to stat */
3721 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2436 3722
2437 /* monitor some parent directory for speedup hints */ 3723 /* if path is not there, monitor some parent directory for speedup hints */
2438 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3724 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2439 /* but an efficiency issue only */ 3725 /* but an efficiency issue only */
2440 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3726 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2441 { 3727 {
2442 char path [4096]; 3728 char path [4096];
… …
2447 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3733 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2448 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3734 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2449 3735
2450 char *pend = strrchr (path, '/'); 3736 char *pend = strrchr (path, '/');
2451 3737
2452 if (!pend) 3738 if (!pend || pend == path)
2453 break; /* whoops, no '/', complain to your admin */ 3739 break;
2454 3740
2455 *pend = 0; 3741 *pend = 0;
2456 w->wd = inotify_add_watch (fs_fd, path, mask); 3742 w->wd = inotify_add_watch (fs_fd, path, mask);
2457 } 3743 }
2458 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3744 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2459 } 3745 }
2460 } 3746 }
2461 else
2462 todo, on nfs etc., we need to poll every 60s or so
2463 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2464 3747
2465 if (w->wd >= 0) 3748 if (w->wd >= 0)
2466 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3749 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3750
3751 /* now re-arm timer, if required */
3752 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3753 ev_timer_again (EV_A_ &w->timer);
3754 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2467} 3755}
2468 3756
2469static void noinline 3757static void noinline
2470infy_del (EV_P_ ev_stat *w) 3758infy_del (EV_P_ ev_stat *w)
2471{ 3759{
… …
2474 3762
2475 if (wd < 0) 3763 if (wd < 0)
2476 return; 3764 return;
2477 3765
2478 w->wd = -2; 3766 w->wd = -2;
2479 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3767 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2480 wlist_del (&fs_hash [slot].head, (WL)w); 3768 wlist_del (&fs_hash [slot].head, (WL)w);
2481 3769
2482 /* remove this watcher, if others are watching it, they will rearm */ 3770 /* remove this watcher, if others are watching it, they will rearm */
2483 inotify_rm_watch (fs_fd, wd); 3771 inotify_rm_watch (fs_fd, wd);
2484} 3772}
… …
2486static void noinline 3774static void noinline
2487infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3775infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2488{ 3776{
2489 if (slot < 0) 3777 if (slot < 0)
2490 /* overflow, need to check for all hash slots */ 3778 /* overflow, need to check for all hash slots */
2491 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3779 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2492 infy_wd (EV_A_ slot, wd, ev); 3780 infy_wd (EV_A_ slot, wd, ev);
2493 else 3781 else
2494 { 3782 {
2495 WL w_; 3783 WL w_;
2496 3784
2497 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3785 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2498 { 3786 {
2499 ev_stat *w = (ev_stat *)w_; 3787 ev_stat *w = (ev_stat *)w_;
2500 w_ = w_->next; /* lets us remove this watcher and all before it */ 3788 w_ = w_->next; /* lets us remove this watcher and all before it */
2501 3789
2502 if (w->wd == wd || wd == -1) 3790 if (w->wd == wd || wd == -1)
2503 { 3791 {
2504 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3792 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2505 { 3793 {
3794 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2506 w->wd = -1; 3795 w->wd = -1;
2507 infy_add (EV_A_ w); /* re-add, no matter what */ 3796 infy_add (EV_A_ w); /* re-add, no matter what */
2508 } 3797 }
2509 3798
2510 stat_timer_cb (EV_A_ &w->timer, 0); 3799 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2515 3804
2516static void 3805static void
2517infy_cb (EV_P_ ev_io *w, int revents) 3806infy_cb (EV_P_ ev_io *w, int revents)
2518{ 3807{
2519 char buf [EV_INOTIFY_BUFSIZE]; 3808 char buf [EV_INOTIFY_BUFSIZE];
2520 struct inotify_event *ev = (struct inotify_event *)buf;
2521 int ofs; 3809 int ofs;
2522 int len = read (fs_fd, buf, sizeof (buf)); 3810 int len = read (fs_fd, buf, sizeof (buf));
2523 3811
2524 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3812 for (ofs = 0; ofs < len; )
3813 {
3814 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2525 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3815 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3816 ofs += sizeof (struct inotify_event) + ev->len;
3817 }
2526} 3818}
2527 3819
2528void inline_size 3820inline_size void ecb_cold
2529infy_init (EV_P) 3821ev_check_2625 (EV_P)
2530{ 3822{
2531 if (fs_fd != -2)
2532 return;
2533
2534 /* kernels < 2.6.25 are borked 3823 /* kernels < 2.6.25 are borked
2535 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3824 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2536 */ 3825 */
2537 { 3826 if (ev_linux_version () < 0x020619)
2538 struct utsname buf; 3827 return;
2539 int major, minor, micro;
2540 3828
3829 fs_2625 = 1;
3830}
3831
3832inline_size int
3833infy_newfd (void)
3834{
3835#if defined IN_CLOEXEC && defined IN_NONBLOCK
3836 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3837 if (fd >= 0)
3838 return fd;
3839#endif
3840 return inotify_init ();
3841}
3842
3843inline_size void
3844infy_init (EV_P)
3845{
3846 if (fs_fd != -2)
3847 return;
3848
2541 fs_fd = -1; 3849 fs_fd = -1;
2542 3850
2543 if (uname (&buf)) 3851 ev_check_2625 (EV_A);
2544 return;
2545 3852
2546 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2547 return;
2548
2549 if (major < 2
2550 || (major == 2 && minor < 6)
2551 || (major == 2 && minor == 6 && micro < 25))
2552 return;
2553 }
2554
2555 fs_fd = inotify_init (); 3853 fs_fd = infy_newfd ();
2556 3854
2557 if (fs_fd >= 0) 3855 if (fs_fd >= 0)
2558 { 3856 {
3857 fd_intern (fs_fd);
2559 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3858 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2560 ev_set_priority (&fs_w, EV_MAXPRI); 3859 ev_set_priority (&fs_w, EV_MAXPRI);
2561 ev_io_start (EV_A_ &fs_w); 3860 ev_io_start (EV_A_ &fs_w);
3861 ev_unref (EV_A);
2562 } 3862 }
2563} 3863}
2564 3864
2565void inline_size 3865inline_size void
2566infy_fork (EV_P) 3866infy_fork (EV_P)
2567{ 3867{
2568 int slot; 3868 int slot;
2569 3869
2570 if (fs_fd < 0) 3870 if (fs_fd < 0)
2571 return; 3871 return;
2572 3872
3873 ev_ref (EV_A);
3874 ev_io_stop (EV_A_ &fs_w);
2573 close (fs_fd); 3875 close (fs_fd);
2574 fs_fd = inotify_init (); 3876 fs_fd = infy_newfd ();
2575 3877
3878 if (fs_fd >= 0)
3879 {
3880 fd_intern (fs_fd);
3881 ev_io_set (&fs_w, fs_fd, EV_READ);
3882 ev_io_start (EV_A_ &fs_w);
3883 ev_unref (EV_A);
3884 }
3885
2576 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3886 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2577 { 3887 {
2578 WL w_ = fs_hash [slot].head; 3888 WL w_ = fs_hash [slot].head;
2579 fs_hash [slot].head = 0; 3889 fs_hash [slot].head = 0;
2580 3890
2581 while (w_) 3891 while (w_)
… …
2586 w->wd = -1; 3896 w->wd = -1;
2587 3897
2588 if (fs_fd >= 0) 3898 if (fs_fd >= 0)
2589 infy_add (EV_A_ w); /* re-add, no matter what */ 3899 infy_add (EV_A_ w); /* re-add, no matter what */
2590 else 3900 else
3901 {
3902 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3903 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2591 ev_timer_start (EV_A_ &w->timer); 3904 ev_timer_again (EV_A_ &w->timer);
3905 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3906 }
2592 } 3907 }
2593 } 3908 }
2594} 3909}
2595 3910
2596#endif 3911#endif
… …
2600#else 3915#else
2601# define EV_LSTAT(p,b) lstat (p, b) 3916# define EV_LSTAT(p,b) lstat (p, b)
2602#endif 3917#endif
2603 3918
2604void 3919void
2605ev_stat_stat (EV_P_ ev_stat *w) 3920ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2606{ 3921{
2607 if (lstat (w->path, &w->attr) < 0) 3922 if (lstat (w->path, &w->attr) < 0)
2608 w->attr.st_nlink = 0; 3923 w->attr.st_nlink = 0;
2609 else if (!w->attr.st_nlink) 3924 else if (!w->attr.st_nlink)
2610 w->attr.st_nlink = 1; 3925 w->attr.st_nlink = 1;
… …
2613static void noinline 3928static void noinline
2614stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3929stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2615{ 3930{
2616 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3931 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2617 3932
2618 /* we copy this here each the time so that */ 3933 ev_statdata prev = w->attr;
2619 /* prev has the old value when the callback gets invoked */
2620 w->prev = w->attr;
2621 ev_stat_stat (EV_A_ w); 3934 ev_stat_stat (EV_A_ w);
2622 3935
2623 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3936 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2624 if ( 3937 if (
2625 w->prev.st_dev != w->attr.st_dev 3938 prev.st_dev != w->attr.st_dev
2626 || w->prev.st_ino != w->attr.st_ino 3939 || prev.st_ino != w->attr.st_ino
2627 || w->prev.st_mode != w->attr.st_mode 3940 || prev.st_mode != w->attr.st_mode
2628 || w->prev.st_nlink != w->attr.st_nlink 3941 || prev.st_nlink != w->attr.st_nlink
2629 || w->prev.st_uid != w->attr.st_uid 3942 || prev.st_uid != w->attr.st_uid
2630 || w->prev.st_gid != w->attr.st_gid 3943 || prev.st_gid != w->attr.st_gid
2631 || w->prev.st_rdev != w->attr.st_rdev 3944 || prev.st_rdev != w->attr.st_rdev
2632 || w->prev.st_size != w->attr.st_size 3945 || prev.st_size != w->attr.st_size
2633 || w->prev.st_atime != w->attr.st_atime 3946 || prev.st_atime != w->attr.st_atime
2634 || w->prev.st_mtime != w->attr.st_mtime 3947 || prev.st_mtime != w->attr.st_mtime
2635 || w->prev.st_ctime != w->attr.st_ctime 3948 || prev.st_ctime != w->attr.st_ctime
2636 ) { 3949 ) {
3950 /* we only update w->prev on actual differences */
3951 /* in case we test more often than invoke the callback, */
3952 /* to ensure that prev is always different to attr */
3953 w->prev = prev;
3954
2637 #if EV_USE_INOTIFY 3955 #if EV_USE_INOTIFY
2638 if (fs_fd >= 0) 3956 if (fs_fd >= 0)
2639 { 3957 {
2640 infy_del (EV_A_ w); 3958 infy_del (EV_A_ w);
2641 infy_add (EV_A_ w); 3959 infy_add (EV_A_ w);
… …
2646 ev_feed_event (EV_A_ w, EV_STAT); 3964 ev_feed_event (EV_A_ w, EV_STAT);
2647 } 3965 }
2648} 3966}
2649 3967
2650void 3968void
2651ev_stat_start (EV_P_ ev_stat *w) 3969ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2652{ 3970{
2653 if (expect_false (ev_is_active (w))) 3971 if (expect_false (ev_is_active (w)))
2654 return; 3972 return;
2655 3973
2656 /* since we use memcmp, we need to clear any padding data etc. */
2657 memset (&w->prev, 0, sizeof (ev_statdata));
2658 memset (&w->attr, 0, sizeof (ev_statdata));
2659
2660 ev_stat_stat (EV_A_ w); 3974 ev_stat_stat (EV_A_ w);
2661 3975
3976 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2662 if (w->interval < MIN_STAT_INTERVAL) 3977 w->interval = MIN_STAT_INTERVAL;
2663 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2664 3978
2665 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3979 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2666 ev_set_priority (&w->timer, ev_priority (w)); 3980 ev_set_priority (&w->timer, ev_priority (w));
2667 3981
2668#if EV_USE_INOTIFY 3982#if EV_USE_INOTIFY
2669 infy_init (EV_A); 3983 infy_init (EV_A);
2670 3984
2671 if (fs_fd >= 0) 3985 if (fs_fd >= 0)
2672 infy_add (EV_A_ w); 3986 infy_add (EV_A_ w);
2673 else 3987 else
2674#endif 3988#endif
3989 {
2675 ev_timer_start (EV_A_ &w->timer); 3990 ev_timer_again (EV_A_ &w->timer);
3991 ev_unref (EV_A);
3992 }
2676 3993
2677 ev_start (EV_A_ (W)w, 1); 3994 ev_start (EV_A_ (W)w, 1);
2678 3995
2679 EV_FREQUENT_CHECK; 3996 EV_FREQUENT_CHECK;
2680} 3997}
2681 3998
2682void 3999void
2683ev_stat_stop (EV_P_ ev_stat *w) 4000ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2684{ 4001{
2685 clear_pending (EV_A_ (W)w); 4002 clear_pending (EV_A_ (W)w);
2686 if (expect_false (!ev_is_active (w))) 4003 if (expect_false (!ev_is_active (w)))
2687 return; 4004 return;
2688 4005
2689 EV_FREQUENT_CHECK; 4006 EV_FREQUENT_CHECK;
2690 4007
2691#if EV_USE_INOTIFY 4008#if EV_USE_INOTIFY
2692 infy_del (EV_A_ w); 4009 infy_del (EV_A_ w);
2693#endif 4010#endif
4011
4012 if (ev_is_active (&w->timer))
4013 {
4014 ev_ref (EV_A);
2694 ev_timer_stop (EV_A_ &w->timer); 4015 ev_timer_stop (EV_A_ &w->timer);
4016 }
2695 4017
2696 ev_stop (EV_A_ (W)w); 4018 ev_stop (EV_A_ (W)w);
2697 4019
2698 EV_FREQUENT_CHECK; 4020 EV_FREQUENT_CHECK;
2699} 4021}
2700#endif 4022#endif
2701 4023
2702#if EV_IDLE_ENABLE 4024#if EV_IDLE_ENABLE
2703void 4025void
2704ev_idle_start (EV_P_ ev_idle *w) 4026ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2705{ 4027{
2706 if (expect_false (ev_is_active (w))) 4028 if (expect_false (ev_is_active (w)))
2707 return; 4029 return;
2708 4030
2709 pri_adjust (EV_A_ (W)w); 4031 pri_adjust (EV_A_ (W)w);
… …
2722 4044
2723 EV_FREQUENT_CHECK; 4045 EV_FREQUENT_CHECK;
2724} 4046}
2725 4047
2726void 4048void
2727ev_idle_stop (EV_P_ ev_idle *w) 4049ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2728{ 4050{
2729 clear_pending (EV_A_ (W)w); 4051 clear_pending (EV_A_ (W)w);
2730 if (expect_false (!ev_is_active (w))) 4052 if (expect_false (!ev_is_active (w)))
2731 return; 4053 return;
2732 4054
… …
2744 4066
2745 EV_FREQUENT_CHECK; 4067 EV_FREQUENT_CHECK;
2746} 4068}
2747#endif 4069#endif
2748 4070
4071#if EV_PREPARE_ENABLE
2749void 4072void
2750ev_prepare_start (EV_P_ ev_prepare *w) 4073ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2751{ 4074{
2752 if (expect_false (ev_is_active (w))) 4075 if (expect_false (ev_is_active (w)))
2753 return; 4076 return;
2754 4077
2755 EV_FREQUENT_CHECK; 4078 EV_FREQUENT_CHECK;
… …
2760 4083
2761 EV_FREQUENT_CHECK; 4084 EV_FREQUENT_CHECK;
2762} 4085}
2763 4086
2764void 4087void
2765ev_prepare_stop (EV_P_ ev_prepare *w) 4088ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2766{ 4089{
2767 clear_pending (EV_A_ (W)w); 4090 clear_pending (EV_A_ (W)w);
2768 if (expect_false (!ev_is_active (w))) 4091 if (expect_false (!ev_is_active (w)))
2769 return; 4092 return;
2770 4093
… …
2779 4102
2780 ev_stop (EV_A_ (W)w); 4103 ev_stop (EV_A_ (W)w);
2781 4104
2782 EV_FREQUENT_CHECK; 4105 EV_FREQUENT_CHECK;
2783} 4106}
4107#endif
2784 4108
4109#if EV_CHECK_ENABLE
2785void 4110void
2786ev_check_start (EV_P_ ev_check *w) 4111ev_check_start (EV_P_ ev_check *w) EV_THROW
2787{ 4112{
2788 if (expect_false (ev_is_active (w))) 4113 if (expect_false (ev_is_active (w)))
2789 return; 4114 return;
2790 4115
2791 EV_FREQUENT_CHECK; 4116 EV_FREQUENT_CHECK;
… …
2796 4121
2797 EV_FREQUENT_CHECK; 4122 EV_FREQUENT_CHECK;
2798} 4123}
2799 4124
2800void 4125void
2801ev_check_stop (EV_P_ ev_check *w) 4126ev_check_stop (EV_P_ ev_check *w) EV_THROW
2802{ 4127{
2803 clear_pending (EV_A_ (W)w); 4128 clear_pending (EV_A_ (W)w);
2804 if (expect_false (!ev_is_active (w))) 4129 if (expect_false (!ev_is_active (w)))
2805 return; 4130 return;
2806 4131
… …
2815 4140
2816 ev_stop (EV_A_ (W)w); 4141 ev_stop (EV_A_ (W)w);
2817 4142
2818 EV_FREQUENT_CHECK; 4143 EV_FREQUENT_CHECK;
2819} 4144}
4145#endif
2820 4146
2821#if EV_EMBED_ENABLE 4147#if EV_EMBED_ENABLE
2822void noinline 4148void noinline
2823ev_embed_sweep (EV_P_ ev_embed *w) 4149ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2824{ 4150{
2825 ev_loop (w->other, EVLOOP_NONBLOCK); 4151 ev_run (w->other, EVRUN_NOWAIT);
2826} 4152}
2827 4153
2828static void 4154static void
2829embed_io_cb (EV_P_ ev_io *io, int revents) 4155embed_io_cb (EV_P_ ev_io *io, int revents)
2830{ 4156{
2831 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4157 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2832 4158
2833 if (ev_cb (w)) 4159 if (ev_cb (w))
2834 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4160 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2835 else 4161 else
2836 ev_loop (w->other, EVLOOP_NONBLOCK); 4162 ev_run (w->other, EVRUN_NOWAIT);
2837} 4163}
2838 4164
2839static void 4165static void
2840embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4166embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2841{ 4167{
2842 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4168 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2843 4169
2844 { 4170 {
2845 struct ev_loop *loop = w->other; 4171 EV_P = w->other;
2846 4172
2847 while (fdchangecnt) 4173 while (fdchangecnt)
2848 { 4174 {
2849 fd_reify (EV_A); 4175 fd_reify (EV_A);
2850 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4176 ev_run (EV_A_ EVRUN_NOWAIT);
2851 } 4177 }
2852 } 4178 }
2853} 4179}
2854 4180
2855static void 4181static void
2856embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 4182embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2857{ 4183{
2858 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4184 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2859 4185
4186 ev_embed_stop (EV_A_ w);
4187
2860 { 4188 {
2861 struct ev_loop *loop = w->other; 4189 EV_P = w->other;
2862 4190
2863 ev_loop_fork (EV_A); 4191 ev_loop_fork (EV_A);
4192 ev_run (EV_A_ EVRUN_NOWAIT);
2864 } 4193 }
4194
4195 ev_embed_start (EV_A_ w);
2865} 4196}
2866 4197
2867#if 0 4198#if 0
2868static void 4199static void
2869embed_idle_cb (EV_P_ ev_idle *idle, int revents) 4200embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2871 ev_idle_stop (EV_A_ idle); 4202 ev_idle_stop (EV_A_ idle);
2872} 4203}
2873#endif 4204#endif
2874 4205
2875void 4206void
2876ev_embed_start (EV_P_ ev_embed *w) 4207ev_embed_start (EV_P_ ev_embed *w) EV_THROW
2877{ 4208{
2878 if (expect_false (ev_is_active (w))) 4209 if (expect_false (ev_is_active (w)))
2879 return; 4210 return;
2880 4211
2881 { 4212 {
2882 struct ev_loop *loop = w->other; 4213 EV_P = w->other;
2883 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4214 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2884 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4215 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2885 } 4216 }
2886 4217
2887 EV_FREQUENT_CHECK; 4218 EV_FREQUENT_CHECK;
2888 4219
… …
2902 4233
2903 EV_FREQUENT_CHECK; 4234 EV_FREQUENT_CHECK;
2904} 4235}
2905 4236
2906void 4237void
2907ev_embed_stop (EV_P_ ev_embed *w) 4238ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
2908{ 4239{
2909 clear_pending (EV_A_ (W)w); 4240 clear_pending (EV_A_ (W)w);
2910 if (expect_false (!ev_is_active (w))) 4241 if (expect_false (!ev_is_active (w)))
2911 return; 4242 return;
2912 4243
… …
2914 4245
2915 ev_io_stop (EV_A_ &w->io); 4246 ev_io_stop (EV_A_ &w->io);
2916 ev_prepare_stop (EV_A_ &w->prepare); 4247 ev_prepare_stop (EV_A_ &w->prepare);
2917 ev_fork_stop (EV_A_ &w->fork); 4248 ev_fork_stop (EV_A_ &w->fork);
2918 4249
4250 ev_stop (EV_A_ (W)w);
4251
2919 EV_FREQUENT_CHECK; 4252 EV_FREQUENT_CHECK;
2920} 4253}
2921#endif 4254#endif
2922 4255
2923#if EV_FORK_ENABLE 4256#if EV_FORK_ENABLE
2924void 4257void
2925ev_fork_start (EV_P_ ev_fork *w) 4258ev_fork_start (EV_P_ ev_fork *w) EV_THROW
2926{ 4259{
2927 if (expect_false (ev_is_active (w))) 4260 if (expect_false (ev_is_active (w)))
2928 return; 4261 return;
2929 4262
2930 EV_FREQUENT_CHECK; 4263 EV_FREQUENT_CHECK;
… …
2935 4268
2936 EV_FREQUENT_CHECK; 4269 EV_FREQUENT_CHECK;
2937} 4270}
2938 4271
2939void 4272void
2940ev_fork_stop (EV_P_ ev_fork *w) 4273ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
2941{ 4274{
2942 clear_pending (EV_A_ (W)w); 4275 clear_pending (EV_A_ (W)w);
2943 if (expect_false (!ev_is_active (w))) 4276 if (expect_false (!ev_is_active (w)))
2944 return; 4277 return;
2945 4278
… …
2956 4289
2957 EV_FREQUENT_CHECK; 4290 EV_FREQUENT_CHECK;
2958} 4291}
2959#endif 4292#endif
2960 4293
4294#if EV_CLEANUP_ENABLE
4295void
4296ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4297{
4298 if (expect_false (ev_is_active (w)))
4299 return;
4300
4301 EV_FREQUENT_CHECK;
4302
4303 ev_start (EV_A_ (W)w, ++cleanupcnt);
4304 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4305 cleanups [cleanupcnt - 1] = w;
4306
4307 /* cleanup watchers should never keep a refcount on the loop */
4308 ev_unref (EV_A);
4309 EV_FREQUENT_CHECK;
4310}
4311
4312void
4313ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4314{
4315 clear_pending (EV_A_ (W)w);
4316 if (expect_false (!ev_is_active (w)))
4317 return;
4318
4319 EV_FREQUENT_CHECK;
4320 ev_ref (EV_A);
4321
4322 {
4323 int active = ev_active (w);
4324
4325 cleanups [active - 1] = cleanups [--cleanupcnt];
4326 ev_active (cleanups [active - 1]) = active;
4327 }
4328
4329 ev_stop (EV_A_ (W)w);
4330
4331 EV_FREQUENT_CHECK;
4332}
4333#endif
4334
2961#if EV_ASYNC_ENABLE 4335#if EV_ASYNC_ENABLE
2962void 4336void
2963ev_async_start (EV_P_ ev_async *w) 4337ev_async_start (EV_P_ ev_async *w) EV_THROW
2964{ 4338{
2965 if (expect_false (ev_is_active (w))) 4339 if (expect_false (ev_is_active (w)))
2966 return; 4340 return;
4341
4342 w->sent = 0;
2967 4343
2968 evpipe_init (EV_A); 4344 evpipe_init (EV_A);
2969 4345
2970 EV_FREQUENT_CHECK; 4346 EV_FREQUENT_CHECK;
2971 4347
… …
2975 4351
2976 EV_FREQUENT_CHECK; 4352 EV_FREQUENT_CHECK;
2977} 4353}
2978 4354
2979void 4355void
2980ev_async_stop (EV_P_ ev_async *w) 4356ev_async_stop (EV_P_ ev_async *w) EV_THROW
2981{ 4357{
2982 clear_pending (EV_A_ (W)w); 4358 clear_pending (EV_A_ (W)w);
2983 if (expect_false (!ev_is_active (w))) 4359 if (expect_false (!ev_is_active (w)))
2984 return; 4360 return;
2985 4361
… …
2996 4372
2997 EV_FREQUENT_CHECK; 4373 EV_FREQUENT_CHECK;
2998} 4374}
2999 4375
3000void 4376void
3001ev_async_send (EV_P_ ev_async *w) 4377ev_async_send (EV_P_ ev_async *w) EV_THROW
3002{ 4378{
3003 w->sent = 1; 4379 w->sent = 1;
3004 evpipe_write (EV_A_ &gotasync); 4380 evpipe_write (EV_A_ &async_pending);
3005} 4381}
3006#endif 4382#endif
3007 4383
3008/*****************************************************************************/ 4384/*****************************************************************************/
3009 4385
… …
3043 4419
3044 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4420 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3045} 4421}
3046 4422
3047void 4423void
3048ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4424ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3049{ 4425{
3050 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4426 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3051 4427
3052 if (expect_false (!once)) 4428 if (expect_false (!once))
3053 { 4429 {
3054 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4430 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3055 return; 4431 return;
3056 } 4432 }
3057 4433
3058 once->cb = cb; 4434 once->cb = cb;
3059 once->arg = arg; 4435 once->arg = arg;
… …
3071 ev_timer_set (&once->to, timeout, 0.); 4447 ev_timer_set (&once->to, timeout, 0.);
3072 ev_timer_start (EV_A_ &once->to); 4448 ev_timer_start (EV_A_ &once->to);
3073 } 4449 }
3074} 4450}
3075 4451
4452/*****************************************************************************/
4453
4454#if EV_WALK_ENABLE
4455void ecb_cold
4456ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4457{
4458 int i, j;
4459 ev_watcher_list *wl, *wn;
4460
4461 if (types & (EV_IO | EV_EMBED))
4462 for (i = 0; i < anfdmax; ++i)
4463 for (wl = anfds [i].head; wl; )
4464 {
4465 wn = wl->next;
4466
4467#if EV_EMBED_ENABLE
4468 if (ev_cb ((ev_io *)wl) == embed_io_cb)
4469 {
4470 if (types & EV_EMBED)
4471 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
4472 }
4473 else
4474#endif
4475#if EV_USE_INOTIFY
4476 if (ev_cb ((ev_io *)wl) == infy_cb)
4477 ;
4478 else
4479#endif
4480 if ((ev_io *)wl != &pipe_w)
4481 if (types & EV_IO)
4482 cb (EV_A_ EV_IO, wl);
4483
4484 wl = wn;
4485 }
4486
4487 if (types & (EV_TIMER | EV_STAT))
4488 for (i = timercnt + HEAP0; i-- > HEAP0; )
4489#if EV_STAT_ENABLE
4490 /*TODO: timer is not always active*/
4491 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
4492 {
4493 if (types & EV_STAT)
4494 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
4495 }
4496 else
4497#endif
4498 if (types & EV_TIMER)
4499 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
4500
4501#if EV_PERIODIC_ENABLE
4502 if (types & EV_PERIODIC)
4503 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4504 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4505#endif
4506
4507#if EV_IDLE_ENABLE
4508 if (types & EV_IDLE)
4509 for (j = NUMPRI; j--; )
4510 for (i = idlecnt [j]; i--; )
4511 cb (EV_A_ EV_IDLE, idles [j][i]);
4512#endif
4513
4514#if EV_FORK_ENABLE
4515 if (types & EV_FORK)
4516 for (i = forkcnt; i--; )
4517 if (ev_cb (forks [i]) != embed_fork_cb)
4518 cb (EV_A_ EV_FORK, forks [i]);
4519#endif
4520
4521#if EV_ASYNC_ENABLE
4522 if (types & EV_ASYNC)
4523 for (i = asynccnt; i--; )
4524 cb (EV_A_ EV_ASYNC, asyncs [i]);
4525#endif
4526
4527#if EV_PREPARE_ENABLE
4528 if (types & EV_PREPARE)
4529 for (i = preparecnt; i--; )
4530# if EV_EMBED_ENABLE
4531 if (ev_cb (prepares [i]) != embed_prepare_cb)
4532# endif
4533 cb (EV_A_ EV_PREPARE, prepares [i]);
4534#endif
4535
4536#if EV_CHECK_ENABLE
4537 if (types & EV_CHECK)
4538 for (i = checkcnt; i--; )
4539 cb (EV_A_ EV_CHECK, checks [i]);
4540#endif
4541
4542#if EV_SIGNAL_ENABLE
4543 if (types & EV_SIGNAL)
4544 for (i = 0; i < EV_NSIG - 1; ++i)
4545 for (wl = signals [i].head; wl; )
4546 {
4547 wn = wl->next;
4548 cb (EV_A_ EV_SIGNAL, wl);
4549 wl = wn;
4550 }
4551#endif
4552
4553#if EV_CHILD_ENABLE
4554 if (types & EV_CHILD)
4555 for (i = (EV_PID_HASHSIZE); i--; )
4556 for (wl = childs [i]; wl; )
4557 {
4558 wn = wl->next;
4559 cb (EV_A_ EV_CHILD, wl);
4560 wl = wn;
4561 }
4562#endif
4563/* EV_STAT 0x00001000 /* stat data changed */
4564/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4565}
4566#endif
4567
3076#if EV_MULTIPLICITY 4568#if EV_MULTIPLICITY
3077 #include "ev_wrap.h" 4569 #include "ev_wrap.h"
3078#endif 4570#endif
3079 4571
3080#ifdef __cplusplus
3081}
3082#endif
3083

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