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Comparing libev/ev.c (file contents):
Revision 1.270 by root, Thu Oct 30 13:07:10 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> 407# include <sys/statfs.h>
292# include <sys/inotify.h> 408# include <sys/inotify.h>
293/* 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 */
294# ifndef IN_DONT_FOLLOW 410# ifndef IN_DONT_FOLLOW
295# undef EV_USE_INOTIFY 411# undef EV_USE_INOTIFY
296# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
297# endif 413# endif
298#endif 414#endif
299 415
300#if EV_SELECT_IS_WINSOCKET
301# include <winsock.h>
302#endif
303
304#if EV_USE_EVENTFD 416#if EV_USE_EVENTFD
305/* 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 */
306# include <stdint.h> 418# include <stdint.h>
307# ifdef __cplusplus 419# ifndef EFD_NONBLOCK
308extern "C" { 420# define EFD_NONBLOCK O_NONBLOCK
309# endif 421# endif
310int eventfd (unsigned int initval, int flags); 422# ifndef EFD_CLOEXEC
311# ifdef __cplusplus 423# ifdef O_CLOEXEC
312} 424# define EFD_CLOEXEC O_CLOEXEC
425# else
426# define EFD_CLOEXEC 02000000
427# endif
313# 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};
314#endif 452#endif
315 453
316/**/ 454/**/
317 455
318#if EV_VERIFY >= 3 456#if EV_VERIFY >= 3
319# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 457# define EV_FREQUENT_CHECK ev_verify (EV_A)
320#else 458#else
321# define EV_FREQUENT_CHECK do { } while (0) 459# define EV_FREQUENT_CHECK do { } while (0)
322#endif 460#endif
323 461
324/* 462/*
325 * This is used to avoid floating point rounding problems. 463 * This is used to work around floating point rounding problems.
326 * It is added to ev_rt_now when scheduling periodics
327 * to ensure progress, time-wise, even when rounding
328 * errors are against us.
329 * This value is good at least till the year 4000. 464 * This value is good at least till the year 4000.
330 * Better solutions welcome.
331 */ 465 */
332#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 */
333 468
334#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) */
335#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) */
336/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
337 471
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;
338#if __GNUC__ >= 4 519 #if __GNUC__
339# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
340# 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;
341#else 536#else
342# define expect(expr,value) (expr) 537 #include <inttypes.h>
343# define noinline 538 #if UINTMAX_MAX > 0xffffffffU
344# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 539 #define ECB_PTRSIZE 8
345# define inline 540 #else
541 #define ECB_PTRSIZE 4
542 #endif
346# 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)))
347#endif 557 #endif
558#endif
348 559
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. */
349#define expect_false(expr) expect ((expr) != 0, 0) 756#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
350#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
351#define inline_size static inline 1013#define inline_size ecb_inline
352 1014
353#if EV_MINIMAL 1015#if EV_FEATURE_CODE
1016# define inline_speed ecb_inline
1017#else
354# 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)
355#else 1025#else
356# define inline_speed static inline
357#endif
358
359#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
360#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 1026# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
1027#endif
361 1028
362#define EMPTY /* required for microsofts broken pseudo-c compiler */ 1029#define EMPTY /* required for microsofts broken pseudo-c compiler */
363#define EMPTY2(a,b) /* used to suppress some warnings */ 1030#define EMPTY2(a,b) /* used to suppress some warnings */
364 1031
365typedef ev_watcher *W; 1032typedef ev_watcher *W;
… …
367typedef ev_watcher_time *WT; 1034typedef ev_watcher_time *WT;
368 1035
369#define ev_active(w) ((W)(w))->active 1036#define ev_active(w) ((W)(w))->active
370#define ev_at(w) ((WT)(w))->at 1037#define ev_at(w) ((WT)(w))->at
371 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
372#if EV_USE_MONOTONIC 1045#if EV_USE_MONOTONIC
373/* sig_atomic_t is used to avoid per-thread variables or locking but still */
374/* giving it a reasonably high chance of working on typical architetcures */
375static 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)
376#endif 1057#endif
377 1058
378#ifdef _WIN32 1059#ifdef _WIN32
379# include "ev_win32.c" 1060# include "ev_win32.c"
380#endif 1061#endif
381 1062
382/*****************************************************************************/ 1063/*****************************************************************************/
383 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
384static void (*syserr_cb)(const char *msg); 1163static void (*syserr_cb)(const char *msg) EV_THROW;
385 1164
386void 1165void ecb_cold
387ev_set_syserr_cb (void (*cb)(const char *msg)) 1166ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
388{ 1167{
389 syserr_cb = cb; 1168 syserr_cb = cb;
390} 1169}
391 1170
392static void noinline 1171static void noinline ecb_cold
393ev_syserr (const char *msg) 1172ev_syserr (const char *msg)
394{ 1173{
395 if (!msg) 1174 if (!msg)
396 msg = "(libev) system error"; 1175 msg = "(libev) system error";
397 1176
398 if (syserr_cb) 1177 if (syserr_cb)
399 syserr_cb (msg); 1178 syserr_cb (msg);
400 else 1179 else
401 { 1180 {
1181#if EV_AVOID_STDIO
1182 ev_printerr (msg);
1183 ev_printerr (": ");
1184 ev_printerr (strerror (errno));
1185 ev_printerr ("\n");
1186#else
402 perror (msg); 1187 perror (msg);
1188#endif
403 abort (); 1189 abort ();
404 } 1190 }
405} 1191}
406 1192
407static void * 1193static void *
408ev_realloc_emul (void *ptr, long size) 1194ev_realloc_emul (void *ptr, long size) EV_THROW
409{ 1195{
1196#if __GLIBC__
1197 return realloc (ptr, size);
1198#else
410 /* some systems, notably openbsd and darwin, fail to properly 1199 /* some systems, notably openbsd and darwin, fail to properly
411 * 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
412 * the single unix specification, so work around them here. 1201 * the single unix specification, so work around them here.
413 */ 1202 */
414 1203
415 if (size) 1204 if (size)
416 return realloc (ptr, size); 1205 return realloc (ptr, size);
417 1206
418 free (ptr); 1207 free (ptr);
419 return 0; 1208 return 0;
1209#endif
420} 1210}
421 1211
422static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1212static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
423 1213
424void 1214void ecb_cold
425ev_set_allocator (void *(*cb)(void *ptr, long size)) 1215ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
426{ 1216{
427 alloc = cb; 1217 alloc = cb;
428} 1218}
429 1219
430inline_speed void * 1220inline_speed void *
… …
432{ 1222{
433 ptr = alloc (ptr, size); 1223 ptr = alloc (ptr, size);
434 1224
435 if (!ptr && size) 1225 if (!ptr && size)
436 { 1226 {
1227#if EV_AVOID_STDIO
1228 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1229#else
437 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1230 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1231#endif
438 abort (); 1232 abort ();
439 } 1233 }
440 1234
441 return ptr; 1235 return ptr;
442} 1236}
… …
444#define ev_malloc(size) ev_realloc (0, (size)) 1238#define ev_malloc(size) ev_realloc (0, (size))
445#define ev_free(ptr) ev_realloc ((ptr), 0) 1239#define ev_free(ptr) ev_realloc ((ptr), 0)
446 1240
447/*****************************************************************************/ 1241/*****************************************************************************/
448 1242
1243/* set in reify when reification needed */
1244#define EV_ANFD_REIFY 1
1245
1246/* file descriptor info structure */
449typedef struct 1247typedef struct
450{ 1248{
451 WL head; 1249 WL head;
452 unsigned char events; 1250 unsigned char events; /* the events watched for */
453 unsigned char reify; 1251 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
454 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 */
455 unsigned char unused; 1253 unsigned char unused;
456#if EV_USE_EPOLL 1254#if EV_USE_EPOLL
457 unsigned int egen; /* generation counter to counter epoll bugs */ 1255 unsigned int egen; /* generation counter to counter epoll bugs */
458#endif 1256#endif
459#if EV_SELECT_IS_WINSOCKET 1257#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
460 SOCKET handle; 1258 SOCKET handle;
461#endif 1259#endif
1260#if EV_USE_IOCP
1261 OVERLAPPED or, ow;
1262#endif
462} ANFD; 1263} ANFD;
463 1264
1265/* stores the pending event set for a given watcher */
464typedef struct 1266typedef struct
465{ 1267{
466 W w; 1268 W w;
467 int events; 1269 int events; /* the pending event set for the given watcher */
468} ANPENDING; 1270} ANPENDING;
469 1271
470#if EV_USE_INOTIFY 1272#if EV_USE_INOTIFY
471/* hash table entry per inotify-id */ 1273/* hash table entry per inotify-id */
472typedef struct 1274typedef struct
… …
475} ANFS; 1277} ANFS;
476#endif 1278#endif
477 1279
478/* Heap Entry */ 1280/* Heap Entry */
479#if EV_HEAP_CACHE_AT 1281#if EV_HEAP_CACHE_AT
1282 /* a heap element */
480 typedef struct { 1283 typedef struct {
481 ev_tstamp at; 1284 ev_tstamp at;
482 WT w; 1285 WT w;
483 } ANHE; 1286 } ANHE;
484 1287
485 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1288 #define ANHE_w(he) (he).w /* access watcher, read-write */
486 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1289 #define ANHE_at(he) (he).at /* access cached at, read-only */
487 #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 */
488#else 1291#else
1292 /* a heap element */
489 typedef WT ANHE; 1293 typedef WT ANHE;
490 1294
491 #define ANHE_w(he) (he) 1295 #define ANHE_w(he) (he)
492 #define ANHE_at(he) (he)->at 1296 #define ANHE_at(he) (he)->at
493 #define ANHE_at_cache(he) 1297 #define ANHE_at_cache(he)
… …
504 #undef VAR 1308 #undef VAR
505 }; 1309 };
506 #include "ev_wrap.h" 1310 #include "ev_wrap.h"
507 1311
508 static struct ev_loop default_loop_struct; 1312 static struct ev_loop default_loop_struct;
509 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 */
510 1314
511#else 1315#else
512 1316
513 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 */
514 #define VAR(name,decl) static decl; 1318 #define VAR(name,decl) static decl;
515 #include "ev_vars.h" 1319 #include "ev_vars.h"
516 #undef VAR 1320 #undef VAR
517 1321
518 static int ev_default_loop_ptr; 1322 static int ev_default_loop_ptr;
519 1323
520#endif 1324#endif
521 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
522/*****************************************************************************/ 1338/*****************************************************************************/
523 1339
1340#ifndef EV_HAVE_EV_TIME
524ev_tstamp 1341ev_tstamp
525ev_time (void) 1342ev_time (void) EV_THROW
526{ 1343{
527#if EV_USE_REALTIME 1344#if EV_USE_REALTIME
1345 if (expect_true (have_realtime))
1346 {
528 struct timespec ts; 1347 struct timespec ts;
529 clock_gettime (CLOCK_REALTIME, &ts); 1348 clock_gettime (CLOCK_REALTIME, &ts);
530 return ts.tv_sec + ts.tv_nsec * 1e-9; 1349 return ts.tv_sec + ts.tv_nsec * 1e-9;
531#else 1350 }
1351#endif
1352
532 struct timeval tv; 1353 struct timeval tv;
533 gettimeofday (&tv, 0); 1354 gettimeofday (&tv, 0);
534 return tv.tv_sec + tv.tv_usec * 1e-6; 1355 return tv.tv_sec + tv.tv_usec * 1e-6;
535#endif
536} 1356}
1357#endif
537 1358
538ev_tstamp inline_size 1359inline_size ev_tstamp
539get_clock (void) 1360get_clock (void)
540{ 1361{
541#if EV_USE_MONOTONIC 1362#if EV_USE_MONOTONIC
542 if (expect_true (have_monotonic)) 1363 if (expect_true (have_monotonic))
543 { 1364 {
… …
550 return ev_time (); 1371 return ev_time ();
551} 1372}
552 1373
553#if EV_MULTIPLICITY 1374#if EV_MULTIPLICITY
554ev_tstamp 1375ev_tstamp
555ev_now (EV_P) 1376ev_now (EV_P) EV_THROW
556{ 1377{
557 return ev_rt_now; 1378 return ev_rt_now;
558} 1379}
559#endif 1380#endif
560 1381
561void 1382void
562ev_sleep (ev_tstamp delay) 1383ev_sleep (ev_tstamp delay) EV_THROW
563{ 1384{
564 if (delay > 0.) 1385 if (delay > 0.)
565 { 1386 {
566#if EV_USE_NANOSLEEP 1387#if EV_USE_NANOSLEEP
567 struct timespec ts; 1388 struct timespec ts;
568 1389
569 ts.tv_sec = (time_t)delay; 1390 EV_TS_SET (ts, delay);
570 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
571
572 nanosleep (&ts, 0); 1391 nanosleep (&ts, 0);
573#elif defined(_WIN32) 1392#elif defined _WIN32
574 Sleep ((unsigned long)(delay * 1e3)); 1393 Sleep ((unsigned long)(delay * 1e3));
575#else 1394#else
576 struct timeval tv; 1395 struct timeval tv;
577 1396
578 tv.tv_sec = (time_t)delay;
579 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
580
581 /* 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 */
582 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1398 /* something not guaranteed by newer posix versions, but guaranteed */
583 /* by older ones */ 1399 /* by older ones */
1400 EV_TV_SET (tv, delay);
584 select (0, 0, 0, 0, &tv); 1401 select (0, 0, 0, 0, &tv);
585#endif 1402#endif
586 } 1403 }
587} 1404}
588 1405
589/*****************************************************************************/ 1406/*****************************************************************************/
590 1407
591#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 */
592 1409
593int 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
594array_nextsize (int elem, int cur, int cnt) 1413array_nextsize (int elem, int cur, int cnt)
595{ 1414{
596 int ncur = cur + 1; 1415 int ncur = cur + 1;
597 1416
598 do 1417 do
599 ncur <<= 1; 1418 ncur <<= 1;
600 while (cnt > ncur); 1419 while (cnt > ncur);
601 1420
602 /* 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 */
603 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1422 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
604 { 1423 {
605 ncur *= elem; 1424 ncur *= elem;
606 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);
607 ncur = ncur - sizeof (void *) * 4; 1426 ncur = ncur - sizeof (void *) * 4;
… …
609 } 1428 }
610 1429
611 return ncur; 1430 return ncur;
612} 1431}
613 1432
614static noinline void * 1433static void * noinline ecb_cold
615array_realloc (int elem, void *base, int *cur, int cnt) 1434array_realloc (int elem, void *base, int *cur, int cnt)
616{ 1435{
617 *cur = array_nextsize (elem, *cur, cnt); 1436 *cur = array_nextsize (elem, *cur, cnt);
618 return ev_realloc (base, elem * *cur); 1437 return ev_realloc (base, elem * *cur);
619} 1438}
… …
622 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1441 memset ((void *)(base), 0, sizeof (*(base)) * (count))
623 1442
624#define array_needsize(type,base,cur,cnt,init) \ 1443#define array_needsize(type,base,cur,cnt,init) \
625 if (expect_false ((cnt) > (cur))) \ 1444 if (expect_false ((cnt) > (cur))) \
626 { \ 1445 { \
627 int ocur_ = (cur); \ 1446 int ecb_unused ocur_ = (cur); \
628 (base) = (type *)array_realloc \ 1447 (base) = (type *)array_realloc \
629 (sizeof (type), (base), &(cur), (cnt)); \ 1448 (sizeof (type), (base), &(cur), (cnt)); \
630 init ((base) + (ocur_), (cur) - ocur_); \ 1449 init ((base) + (ocur_), (cur) - ocur_); \
631 } 1450 }
632 1451
… …
639 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1458 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
640 } 1459 }
641#endif 1460#endif
642 1461
643#define array_free(stem, idx) \ 1462#define array_free(stem, idx) \
644 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
645 1464
646/*****************************************************************************/ 1465/*****************************************************************************/
647 1466
1467/* dummy callback for pending events */
1468static void noinline
1469pendingcb (EV_P_ ev_prepare *w, int revents)
1470{
1471}
1472
648void noinline 1473void noinline
649ev_feed_event (EV_P_ void *w, int revents) 1474ev_feed_event (EV_P_ void *w, int revents) EV_THROW
650{ 1475{
651 W w_ = (W)w; 1476 W w_ = (W)w;
652 int pri = ABSPRI (w_); 1477 int pri = ABSPRI (w_);
653 1478
654 if (expect_false (w_->pending)) 1479 if (expect_false (w_->pending))
… …
658 w_->pending = ++pendingcnt [pri]; 1483 w_->pending = ++pendingcnt [pri];
659 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1484 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
660 pendings [pri][w_->pending - 1].w = w_; 1485 pendings [pri][w_->pending - 1].w = w_;
661 pendings [pri][w_->pending - 1].events = revents; 1486 pendings [pri][w_->pending - 1].events = revents;
662 } 1487 }
663}
664 1488
665void 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
666queue_events (EV_P_ W *events, int eventcnt, int type) 1508queue_events (EV_P_ W *events, int eventcnt, int type)
667{ 1509{
668 int i; 1510 int i;
669 1511
670 for (i = 0; i < eventcnt; ++i) 1512 for (i = 0; i < eventcnt; ++i)
671 ev_feed_event (EV_A_ events [i], type); 1513 ev_feed_event (EV_A_ events [i], type);
672} 1514}
673 1515
674/*****************************************************************************/ 1516/*****************************************************************************/
675 1517
676void inline_speed 1518inline_speed void
677fd_event (EV_P_ int fd, int revents) 1519fd_event_nocheck (EV_P_ int fd, int revents)
678{ 1520{
679 ANFD *anfd = anfds + fd; 1521 ANFD *anfd = anfds + fd;
680 ev_io *w; 1522 ev_io *w;
681 1523
682 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)
… …
686 if (ev) 1528 if (ev)
687 ev_feed_event (EV_A_ (W)w, ev); 1529 ev_feed_event (EV_A_ (W)w, ev);
688 } 1530 }
689} 1531}
690 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
691void 1544void
692ev_feed_fd_event (EV_P_ int fd, int revents) 1545ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
693{ 1546{
694 if (fd >= 0 && fd < anfdmax) 1547 if (fd >= 0 && fd < anfdmax)
695 fd_event (EV_A_ fd, revents); 1548 fd_event_nocheck (EV_A_ fd, revents);
696} 1549}
697 1550
698void inline_size 1551/* make sure the external fd watch events are in-sync */
1552/* with the kernel/libev internal state */
1553inline_size void
699fd_reify (EV_P) 1554fd_reify (EV_P)
700{ 1555{
701 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
702 1582
703 for (i = 0; i < fdchangecnt; ++i) 1583 for (i = 0; i < fdchangecnt; ++i)
704 { 1584 {
705 int fd = fdchanges [i]; 1585 int fd = fdchanges [i];
706 ANFD *anfd = anfds + fd; 1586 ANFD *anfd = anfds + fd;
707 ev_io *w; 1587 ev_io *w;
708 1588
709 unsigned char events = 0; 1589 unsigned char o_events = anfd->events;
1590 unsigned char o_reify = anfd->reify;
710 1591
711 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1592 anfd->reify = 0;
712 events |= (unsigned char)w->events;
713 1593
714#if EV_SELECT_IS_WINSOCKET 1594 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
715 if (events)
716 { 1595 {
717 unsigned long arg; 1596 anfd->events = 0;
718 #ifdef EV_FD_TO_WIN32_HANDLE 1597
719 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1598 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
720 #else 1599 anfd->events |= (unsigned char)w->events;
721 anfd->handle = _get_osfhandle (fd); 1600
722 #endif 1601 if (o_events != anfd->events)
723 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1602 o_reify = EV__IOFDSET; /* actually |= */
724 } 1603 }
725#endif
726 1604
727 { 1605 if (o_reify & EV__IOFDSET)
728 unsigned char o_events = anfd->events;
729 unsigned char o_reify = anfd->reify;
730
731 anfd->reify = 0;
732 anfd->events = events;
733
734 if (o_events != events || o_reify & EV_IOFDSET)
735 backend_modify (EV_A_ fd, o_events, events); 1606 backend_modify (EV_A_ fd, o_events, anfd->events);
736 }
737 } 1607 }
738 1608
739 fdchangecnt = 0; 1609 fdchangecnt = 0;
740} 1610}
741 1611
742void inline_size 1612/* something about the given fd changed */
1613inline_size void
743fd_change (EV_P_ int fd, int flags) 1614fd_change (EV_P_ int fd, int flags)
744{ 1615{
745 unsigned char reify = anfds [fd].reify; 1616 unsigned char reify = anfds [fd].reify;
746 anfds [fd].reify |= flags; 1617 anfds [fd].reify |= flags;
747 1618
… …
751 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1622 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
752 fdchanges [fdchangecnt - 1] = fd; 1623 fdchanges [fdchangecnt - 1] = fd;
753 } 1624 }
754} 1625}
755 1626
756void inline_speed 1627/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1628inline_speed void ecb_cold
757fd_kill (EV_P_ int fd) 1629fd_kill (EV_P_ int fd)
758{ 1630{
759 ev_io *w; 1631 ev_io *w;
760 1632
761 while ((w = (ev_io *)anfds [fd].head)) 1633 while ((w = (ev_io *)anfds [fd].head))
… …
763 ev_io_stop (EV_A_ w); 1635 ev_io_stop (EV_A_ w);
764 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);
765 } 1637 }
766} 1638}
767 1639
768int inline_size 1640/* check whether the given fd is actually valid, for error recovery */
1641inline_size int ecb_cold
769fd_valid (int fd) 1642fd_valid (int fd)
770{ 1643{
771#ifdef _WIN32 1644#ifdef _WIN32
772 return _get_osfhandle (fd) != -1; 1645 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
773#else 1646#else
774 return fcntl (fd, F_GETFD) != -1; 1647 return fcntl (fd, F_GETFD) != -1;
775#endif 1648#endif
776} 1649}
777 1650
778/* called on EBADF to verify fds */ 1651/* called on EBADF to verify fds */
779static void noinline 1652static void noinline ecb_cold
780fd_ebadf (EV_P) 1653fd_ebadf (EV_P)
781{ 1654{
782 int fd; 1655 int fd;
783 1656
784 for (fd = 0; fd < anfdmax; ++fd) 1657 for (fd = 0; fd < anfdmax; ++fd)
… …
786 if (!fd_valid (fd) && errno == EBADF) 1659 if (!fd_valid (fd) && errno == EBADF)
787 fd_kill (EV_A_ fd); 1660 fd_kill (EV_A_ fd);
788} 1661}
789 1662
790/* 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 */
791static void noinline 1664static void noinline ecb_cold
792fd_enomem (EV_P) 1665fd_enomem (EV_P)
793{ 1666{
794 int fd; 1667 int fd;
795 1668
796 for (fd = anfdmax; fd--; ) 1669 for (fd = anfdmax; fd--; )
797 if (anfds [fd].events) 1670 if (anfds [fd].events)
798 { 1671 {
799 fd_kill (EV_A_ fd); 1672 fd_kill (EV_A_ fd);
800 return; 1673 break;
801 } 1674 }
802} 1675}
803 1676
804/* 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 */
805static void noinline 1678static void noinline
… …
810 for (fd = 0; fd < anfdmax; ++fd) 1683 for (fd = 0; fd < anfdmax; ++fd)
811 if (anfds [fd].events) 1684 if (anfds [fd].events)
812 { 1685 {
813 anfds [fd].events = 0; 1686 anfds [fd].events = 0;
814 anfds [fd].emask = 0; 1687 anfds [fd].emask = 0;
815 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1688 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
816 } 1689 }
817} 1690}
818 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
819/*****************************************************************************/ 1706/*****************************************************************************/
820 1707
821/* 1708/*
822 * 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
823 * 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
824 * the branching factor of the d-tree. 1711 * the branching factor of the d-tree.
825 */ 1712 */
826 1713
827/* 1714/*
… …
836#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1723#define HEAP0 (DHEAP - 1) /* index of first element in heap */
837#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1724#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
838#define UPHEAP_DONE(p,k) ((p) == (k)) 1725#define UPHEAP_DONE(p,k) ((p) == (k))
839 1726
840/* away from the root */ 1727/* away from the root */
841void inline_speed 1728inline_speed void
842downheap (ANHE *heap, int N, int k) 1729downheap (ANHE *heap, int N, int k)
843{ 1730{
844 ANHE he = heap [k]; 1731 ANHE he = heap [k];
845 ANHE *E = heap + N + HEAP0; 1732 ANHE *E = heap + N + HEAP0;
846 1733
… …
886#define HEAP0 1 1773#define HEAP0 1
887#define HPARENT(k) ((k) >> 1) 1774#define HPARENT(k) ((k) >> 1)
888#define UPHEAP_DONE(p,k) (!(p)) 1775#define UPHEAP_DONE(p,k) (!(p))
889 1776
890/* away from the root */ 1777/* away from the root */
891void inline_speed 1778inline_speed void
892downheap (ANHE *heap, int N, int k) 1779downheap (ANHE *heap, int N, int k)
893{ 1780{
894 ANHE he = heap [k]; 1781 ANHE he = heap [k];
895 1782
896 for (;;) 1783 for (;;)
897 { 1784 {
898 int c = k << 1; 1785 int c = k << 1;
899 1786
900 if (c > N + HEAP0 - 1) 1787 if (c >= N + HEAP0)
901 break; 1788 break;
902 1789
903 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])
904 ? 1 : 0; 1791 ? 1 : 0;
905 1792
… …
916 ev_active (ANHE_w (he)) = k; 1803 ev_active (ANHE_w (he)) = k;
917} 1804}
918#endif 1805#endif
919 1806
920/* towards the root */ 1807/* towards the root */
921void inline_speed 1808inline_speed void
922upheap (ANHE *heap, int k) 1809upheap (ANHE *heap, int k)
923{ 1810{
924 ANHE he = heap [k]; 1811 ANHE he = heap [k];
925 1812
926 for (;;) 1813 for (;;)
… …
937 1824
938 heap [k] = he; 1825 heap [k] = he;
939 ev_active (ANHE_w (he)) = k; 1826 ev_active (ANHE_w (he)) = k;
940} 1827}
941 1828
942void inline_size 1829/* move an element suitably so it is in a correct place */
1830inline_size void
943adjustheap (ANHE *heap, int N, int k) 1831adjustheap (ANHE *heap, int N, int k)
944{ 1832{
945 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)]))
946 upheap (heap, k); 1834 upheap (heap, k);
947 else 1835 else
948 downheap (heap, N, k); 1836 downheap (heap, N, k);
949} 1837}
950 1838
951/* 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 */
952void inline_size 1840inline_size void
953reheap (ANHE *heap, int N) 1841reheap (ANHE *heap, int N)
954{ 1842{
955 int i; 1843 int i;
956 1844
957 /* 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 */
… …
960 upheap (heap, i + HEAP0); 1848 upheap (heap, i + HEAP0);
961} 1849}
962 1850
963/*****************************************************************************/ 1851/*****************************************************************************/
964 1852
1853/* associate signal watchers to a signal signal */
965typedef struct 1854typedef struct
966{ 1855{
1856 EV_ATOMIC_T pending;
1857#if EV_MULTIPLICITY
1858 EV_P;
1859#endif
967 WL head; 1860 WL head;
968 EV_ATOMIC_T gotsig;
969} ANSIG; 1861} ANSIG;
970 1862
971static ANSIG *signals; 1863static ANSIG signals [EV_NSIG - 1];
972static int signalmax;
973
974static EV_ATOMIC_T gotsig;
975 1864
976/*****************************************************************************/ 1865/*****************************************************************************/
977 1866
978void inline_speed 1867#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
979fd_intern (int fd)
980{
981#ifdef _WIN32
982 unsigned long arg = 1;
983 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
984#else
985 fcntl (fd, F_SETFD, FD_CLOEXEC);
986 fcntl (fd, F_SETFL, O_NONBLOCK);
987#endif
988}
989 1868
990static void noinline 1869static void noinline ecb_cold
991evpipe_init (EV_P) 1870evpipe_init (EV_P)
992{ 1871{
993 if (!ev_is_active (&pipeev)) 1872 if (!ev_is_active (&pipe_w))
994 { 1873 {
995#if EV_USE_EVENTFD 1874# if EV_USE_EVENTFD
1875 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1876 if (evfd < 0 && errno == EINVAL)
996 if ((evfd = eventfd (0, 0)) >= 0) 1877 evfd = eventfd (0, 0);
1878
1879 if (evfd >= 0)
997 { 1880 {
998 evpipe [0] = -1; 1881 evpipe [0] = -1;
999 fd_intern (evfd); 1882 fd_intern (evfd); /* doing it twice doesn't hurt */
1000 ev_io_set (&pipeev, evfd, EV_READ); 1883 ev_io_set (&pipe_w, evfd, EV_READ);
1001 } 1884 }
1002 else 1885 else
1003#endif 1886# endif
1004 { 1887 {
1005 while (pipe (evpipe)) 1888 while (pipe (evpipe))
1006 ev_syserr ("(libev) error creating signal/async pipe"); 1889 ev_syserr ("(libev) error creating signal/async pipe");
1007 1890
1008 fd_intern (evpipe [0]); 1891 fd_intern (evpipe [0]);
1009 fd_intern (evpipe [1]); 1892 fd_intern (evpipe [1]);
1010 ev_io_set (&pipeev, evpipe [0], EV_READ); 1893 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1011 } 1894 }
1012 1895
1013 ev_io_start (EV_A_ &pipeev); 1896 ev_io_start (EV_A_ &pipe_w);
1014 ev_unref (EV_A); /* watcher should not keep loop alive */ 1897 ev_unref (EV_A); /* watcher should not keep loop alive */
1015 } 1898 }
1016} 1899}
1017 1900
1018void inline_size 1901inline_speed void
1019evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1902evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1020{ 1903{
1021 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)
1022 { 1917 {
1918 int old_errno;
1919
1920 pipe_write_skipped = 0;
1921 ECB_MEMORY_FENCE_RELEASE;
1922
1023 int old_errno = errno; /* save errno because write might clobber it */ 1923 old_errno = errno; /* save errno because write will clobber it */
1024
1025 *flag = 1;
1026 1924
1027#if EV_USE_EVENTFD 1925#if EV_USE_EVENTFD
1028 if (evfd >= 0) 1926 if (evfd >= 0)
1029 { 1927 {
1030 uint64_t counter = 1; 1928 uint64_t counter = 1;
1031 write (evfd, &counter, sizeof (uint64_t)); 1929 write (evfd, &counter, sizeof (uint64_t));
1032 } 1930 }
1033 else 1931 else
1034#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
1035 write (evpipe [1], &old_errno, 1); 1941 write (evpipe [1], &(evpipe [1]), 1);
1942#endif
1943 }
1036 1944
1037 errno = old_errno; 1945 errno = old_errno;
1038 } 1946 }
1039} 1947}
1040 1948
1949/* called whenever the libev signal pipe */
1950/* got some events (signal, async) */
1041static void 1951static void
1042pipecb (EV_P_ ev_io *iow, int revents) 1952pipecb (EV_P_ ev_io *iow, int revents)
1043{ 1953{
1954 int i;
1955
1956 if (revents & EV_READ)
1957 {
1044#if EV_USE_EVENTFD 1958#if EV_USE_EVENTFD
1045 if (evfd >= 0) 1959 if (evfd >= 0)
1046 { 1960 {
1047 uint64_t counter; 1961 uint64_t counter;
1048 read (evfd, &counter, sizeof (uint64_t)); 1962 read (evfd, &counter, sizeof (uint64_t));
1049 } 1963 }
1050 else 1964 else
1051#endif 1965#endif
1052 { 1966 {
1053 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
1054 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)
1055 } 1987 {
1988 sig_pending = 0;
1056 1989
1057 if (gotsig && ev_is_default_loop (EV_A)) 1990 ECB_MEMORY_FENCE;
1058 {
1059 int signum;
1060 gotsig = 0;
1061 1991
1062 for (signum = signalmax; signum--; ) 1992 for (i = EV_NSIG - 1; i--; )
1063 if (signals [signum].gotsig) 1993 if (expect_false (signals [i].pending))
1064 ev_feed_signal_event (EV_A_ signum + 1); 1994 ev_feed_signal_event (EV_A_ i + 1);
1065 } 1995 }
1996#endif
1066 1997
1067#if EV_ASYNC_ENABLE 1998#if EV_ASYNC_ENABLE
1068 if (gotasync) 1999 if (async_pending)
1069 { 2000 {
1070 int i; 2001 async_pending = 0;
1071 gotasync = 0; 2002
2003 ECB_MEMORY_FENCE;
1072 2004
1073 for (i = asynccnt; i--; ) 2005 for (i = asynccnt; i--; )
1074 if (asyncs [i]->sent) 2006 if (asyncs [i]->sent)
1075 { 2007 {
1076 asyncs [i]->sent = 0; 2008 asyncs [i]->sent = 0;
2009 ECB_MEMORY_FENCE_RELEASE;
1077 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2010 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1078 } 2011 }
1079 } 2012 }
1080#endif 2013#endif
1081} 2014}
1082 2015
1083/*****************************************************************************/ 2016/*****************************************************************************/
1084 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
1085static void 2035static void
1086ev_sighandler (int signum) 2036ev_sighandler (int signum)
1087{ 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
1088#if EV_MULTIPLICITY 2055#if EV_MULTIPLICITY
1089 struct ev_loop *loop = &default_loop_struct; 2056 /* it is permissible to try to feed a signal to the wrong loop */
1090#endif 2057 /* or, likely more useful, feeding a signal nobody is waiting for */
1091 2058
1092#if _WIN32 2059 if (expect_false (signals [signum].loop != EV_A))
1093 signal (signum, ev_sighandler);
1094#endif
1095
1096 signals [signum - 1].gotsig = 1;
1097 evpipe_write (EV_A_ &gotsig);
1098}
1099
1100void noinline
1101ev_feed_signal_event (EV_P_ int signum)
1102{
1103 WL w;
1104
1105#if EV_MULTIPLICITY
1106 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1107#endif
1108
1109 --signum;
1110
1111 if (signum < 0 || signum >= signalmax)
1112 return; 2060 return;
2061#endif
1113 2062
1114 signals [signum].gotsig = 0; 2063 signals [signum].pending = 0;
2064 ECB_MEMORY_FENCE_RELEASE;
1115 2065
1116 for (w = signals [signum].head; w; w = w->next) 2066 for (w = signals [signum].head; w; w = w->next)
1117 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2067 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1118} 2068}
1119 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
1120/*****************************************************************************/ 2092/*****************************************************************************/
1121 2093
2094#if EV_CHILD_ENABLE
1122static WL childs [EV_PID_HASHSIZE]; 2095static WL childs [EV_PID_HASHSIZE];
1123
1124#ifndef _WIN32
1125 2096
1126static ev_signal childev; 2097static ev_signal childev;
1127 2098
1128#ifndef WIFCONTINUED 2099#ifndef WIFCONTINUED
1129# define WIFCONTINUED(status) 0 2100# define WIFCONTINUED(status) 0
1130#endif 2101#endif
1131 2102
1132void inline_speed 2103/* handle a single child status event */
2104inline_speed void
1133child_reap (EV_P_ int chain, int pid, int status) 2105child_reap (EV_P_ int chain, int pid, int status)
1134{ 2106{
1135 ev_child *w; 2107 ev_child *w;
1136 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2108 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1137 2109
1138 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)
1139 { 2111 {
1140 if ((w->pid == pid || !w->pid) 2112 if ((w->pid == pid || !w->pid)
1141 && (!traced || (w->flags & 1))) 2113 && (!traced || (w->flags & 1)))
1142 { 2114 {
1143 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 */
… …
1150 2122
1151#ifndef WCONTINUED 2123#ifndef WCONTINUED
1152# define WCONTINUED 0 2124# define WCONTINUED 0
1153#endif 2125#endif
1154 2126
2127/* called on sigchld etc., calls waitpid */
1155static void 2128static void
1156childcb (EV_P_ ev_signal *sw, int revents) 2129childcb (EV_P_ ev_signal *sw, int revents)
1157{ 2130{
1158 int pid, status; 2131 int pid, status;
1159 2132
… …
1167 /* 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 */
1168 /* 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 */
1169 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2142 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1170 2143
1171 child_reap (EV_A_ pid, pid, status); 2144 child_reap (EV_A_ pid, pid, status);
1172 if (EV_PID_HASHSIZE > 1) 2145 if ((EV_PID_HASHSIZE) > 1)
1173 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 */
1174} 2147}
1175 2148
1176#endif 2149#endif
1177 2150
1178/*****************************************************************************/ 2151/*****************************************************************************/
1179 2152
2153#if EV_USE_IOCP
2154# include "ev_iocp.c"
2155#endif
1180#if EV_USE_PORT 2156#if EV_USE_PORT
1181# include "ev_port.c" 2157# include "ev_port.c"
1182#endif 2158#endif
1183#if EV_USE_KQUEUE 2159#if EV_USE_KQUEUE
1184# include "ev_kqueue.c" 2160# include "ev_kqueue.c"
… …
1191#endif 2167#endif
1192#if EV_USE_SELECT 2168#if EV_USE_SELECT
1193# include "ev_select.c" 2169# include "ev_select.c"
1194#endif 2170#endif
1195 2171
1196int 2172int ecb_cold
1197ev_version_major (void) 2173ev_version_major (void) EV_THROW
1198{ 2174{
1199 return EV_VERSION_MAJOR; 2175 return EV_VERSION_MAJOR;
1200} 2176}
1201 2177
1202int 2178int ecb_cold
1203ev_version_minor (void) 2179ev_version_minor (void) EV_THROW
1204{ 2180{
1205 return EV_VERSION_MINOR; 2181 return EV_VERSION_MINOR;
1206} 2182}
1207 2183
1208/* 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 */
1209int inline_size 2185int inline_size ecb_cold
1210enable_secure (void) 2186enable_secure (void)
1211{ 2187{
1212#ifdef _WIN32 2188#ifdef _WIN32
1213 return 0; 2189 return 0;
1214#else 2190#else
1215 return getuid () != geteuid () 2191 return getuid () != geteuid ()
1216 || getgid () != getegid (); 2192 || getgid () != getegid ();
1217#endif 2193#endif
1218} 2194}
1219 2195
1220unsigned int 2196unsigned int ecb_cold
1221ev_supported_backends (void) 2197ev_supported_backends (void) EV_THROW
1222{ 2198{
1223 unsigned int flags = 0; 2199 unsigned int flags = 0;
1224 2200
1225 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2201 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1226 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2202 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1229 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2205 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1230 2206
1231 return flags; 2207 return flags;
1232} 2208}
1233 2209
1234unsigned int 2210unsigned int ecb_cold
1235ev_recommended_backends (void) 2211ev_recommended_backends (void) EV_THROW
1236{ 2212{
1237 unsigned int flags = ev_supported_backends (); 2213 unsigned int flags = ev_supported_backends ();
1238 2214
1239#ifndef __NetBSD__ 2215#ifndef __NetBSD__
1240 /* kqueue is borked on everything but netbsd apparently */ 2216 /* kqueue is borked on everything but netbsd apparently */
1241 /* 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 */
1242 flags &= ~EVBACKEND_KQUEUE; 2218 flags &= ~EVBACKEND_KQUEUE;
1243#endif 2219#endif
1244#ifdef __APPLE__ 2220#ifdef __APPLE__
1245 // flags &= ~EVBACKEND_KQUEUE; for documentation 2221 /* only select works correctly on that "unix-certified" platform */
1246 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) */
1247#endif 2227#endif
1248 2228
1249 return flags; 2229 return flags;
1250} 2230}
1251 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
1252unsigned int 2244unsigned int
1253ev_embeddable_backends (void) 2245ev_backend (EV_P) EV_THROW
1254{ 2246{
1255 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2247 return backend;
1256
1257 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1258 /* please fix it and tell me how to detect the fix */
1259 flags &= ~EVBACKEND_EPOLL;
1260
1261 return flags;
1262} 2248}
1263 2249
2250#if EV_FEATURE_API
1264unsigned int 2251unsigned int
1265ev_backend (EV_P) 2252ev_iteration (EV_P) EV_THROW
1266{ 2253{
1267 return backend; 2254 return loop_count;
1268} 2255}
1269 2256
1270unsigned int 2257unsigned int
1271ev_loop_count (EV_P) 2258ev_depth (EV_P) EV_THROW
1272{ 2259{
1273 return loop_count; 2260 return loop_depth;
1274} 2261}
1275 2262
1276void 2263void
1277ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2264ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1278{ 2265{
1279 io_blocktime = interval; 2266 io_blocktime = interval;
1280} 2267}
1281 2268
1282void 2269void
1283ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2270ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1284{ 2271{
1285 timeout_blocktime = interval; 2272 timeout_blocktime = interval;
1286} 2273}
1287 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 */
1288static void noinline 2302static void noinline ecb_cold
1289loop_init (EV_P_ unsigned int flags) 2303loop_init (EV_P_ unsigned int flags) EV_THROW
1290{ 2304{
1291 if (!backend) 2305 if (!backend)
1292 { 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
1293#if EV_USE_MONOTONIC 2319#if EV_USE_MONOTONIC
2320 if (!have_monotonic)
1294 { 2321 {
1295 struct timespec ts; 2322 struct timespec ts;
2323
1296 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2324 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1297 have_monotonic = 1; 2325 have_monotonic = 1;
1298 } 2326 }
1299#endif
1300
1301 ev_rt_now = ev_time ();
1302 mn_now = get_clock ();
1303 now_floor = mn_now;
1304 rtmn_diff = ev_rt_now - mn_now;
1305
1306 io_blocktime = 0.;
1307 timeout_blocktime = 0.;
1308 backend = 0;
1309 backend_fd = -1;
1310 gotasync = 0;
1311#if EV_USE_INOTIFY
1312 fs_fd = -2;
1313#endif 2327#endif
1314 2328
1315 /* pid check not overridable via env */ 2329 /* pid check not overridable via env */
1316#ifndef _WIN32 2330#ifndef _WIN32
1317 if (flags & EVFLAG_FORKCHECK) 2331 if (flags & EVFLAG_FORKCHECK)
… …
1321 if (!(flags & EVFLAG_NOENV) 2335 if (!(flags & EVFLAG_NOENV)
1322 && !enable_secure () 2336 && !enable_secure ()
1323 && getenv ("LIBEV_FLAGS")) 2337 && getenv ("LIBEV_FLAGS"))
1324 flags = atoi (getenv ("LIBEV_FLAGS")); 2338 flags = atoi (getenv ("LIBEV_FLAGS"));
1325 2339
1326 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))
1327 flags |= ev_recommended_backends (); 2366 flags |= ev_recommended_backends ();
1328 2367
2368#if EV_USE_IOCP
2369 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2370#endif
1329#if EV_USE_PORT 2371#if EV_USE_PORT
1330 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2372 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1331#endif 2373#endif
1332#if EV_USE_KQUEUE 2374#if EV_USE_KQUEUE
1333 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2375 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1340#endif 2382#endif
1341#if EV_USE_SELECT 2383#if EV_USE_SELECT
1342 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2384 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1343#endif 2385#endif
1344 2386
2387 ev_prepare_init (&pending_w, pendingcb);
2388
2389#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1345 ev_init (&pipeev, pipecb); 2390 ev_init (&pipe_w, pipecb);
1346 ev_set_priority (&pipeev, EV_MAXPRI); 2391 ev_set_priority (&pipe_w, EV_MAXPRI);
2392#endif
1347 } 2393 }
1348} 2394}
1349 2395
1350static void noinline 2396/* free up a loop structure */
2397void ecb_cold
1351loop_destroy (EV_P) 2398ev_loop_destroy (EV_P)
1352{ 2399{
1353 int i; 2400 int i;
1354 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
1355 if (ev_is_active (&pipeev)) 2425 if (ev_is_active (&pipe_w))
1356 { 2426 {
1357 ev_ref (EV_A); /* signal watcher */ 2427 /*ev_ref (EV_A);*/
1358 ev_io_stop (EV_A_ &pipeev); 2428 /*ev_io_stop (EV_A_ &pipe_w);*/
1359 2429
1360#if EV_USE_EVENTFD 2430#if EV_USE_EVENTFD
1361 if (evfd >= 0) 2431 if (evfd >= 0)
1362 close (evfd); 2432 close (evfd);
1363#endif 2433#endif
1364 2434
1365 if (evpipe [0] >= 0) 2435 if (evpipe [0] >= 0)
1366 { 2436 {
1367 close (evpipe [0]); 2437 EV_WIN32_CLOSE_FD (evpipe [0]);
1368 close (evpipe [1]); 2438 EV_WIN32_CLOSE_FD (evpipe [1]);
1369 } 2439 }
1370 } 2440 }
2441
2442#if EV_USE_SIGNALFD
2443 if (ev_is_active (&sigfd_w))
2444 close (sigfd);
2445#endif
1371 2446
1372#if EV_USE_INOTIFY 2447#if EV_USE_INOTIFY
1373 if (fs_fd >= 0) 2448 if (fs_fd >= 0)
1374 close (fs_fd); 2449 close (fs_fd);
1375#endif 2450#endif
1376 2451
1377 if (backend_fd >= 0) 2452 if (backend_fd >= 0)
1378 close (backend_fd); 2453 close (backend_fd);
1379 2454
2455#if EV_USE_IOCP
2456 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2457#endif
1380#if EV_USE_PORT 2458#if EV_USE_PORT
1381 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2459 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1382#endif 2460#endif
1383#if EV_USE_KQUEUE 2461#if EV_USE_KQUEUE
1384 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2462 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1399#if EV_IDLE_ENABLE 2477#if EV_IDLE_ENABLE
1400 array_free (idle, [i]); 2478 array_free (idle, [i]);
1401#endif 2479#endif
1402 } 2480 }
1403 2481
1404 ev_free (anfds); anfdmax = 0; 2482 ev_free (anfds); anfds = 0; anfdmax = 0;
1405 2483
1406 /* 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);
1407 array_free (fdchange, EMPTY); 2486 array_free (fdchange, EMPTY);
1408 array_free (timer, EMPTY); 2487 array_free (timer, EMPTY);
1409#if EV_PERIODIC_ENABLE 2488#if EV_PERIODIC_ENABLE
1410 array_free (periodic, EMPTY); 2489 array_free (periodic, EMPTY);
1411#endif 2490#endif
1412#if EV_FORK_ENABLE 2491#if EV_FORK_ENABLE
1413 array_free (fork, EMPTY); 2492 array_free (fork, EMPTY);
1414#endif 2493#endif
2494#if EV_CLEANUP_ENABLE
2495 array_free (cleanup, EMPTY);
2496#endif
1415 array_free (prepare, EMPTY); 2497 array_free (prepare, EMPTY);
1416 array_free (check, EMPTY); 2498 array_free (check, EMPTY);
1417#if EV_ASYNC_ENABLE 2499#if EV_ASYNC_ENABLE
1418 array_free (async, EMPTY); 2500 array_free (async, EMPTY);
1419#endif 2501#endif
1420 2502
1421 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
1422} 2513}
1423 2514
1424#if EV_USE_INOTIFY 2515#if EV_USE_INOTIFY
1425void inline_size infy_fork (EV_P); 2516inline_size void infy_fork (EV_P);
1426#endif 2517#endif
1427 2518
1428void inline_size 2519inline_size void
1429loop_fork (EV_P) 2520loop_fork (EV_P)
1430{ 2521{
1431#if EV_USE_PORT 2522#if EV_USE_PORT
1432 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2523 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1433#endif 2524#endif
… …
1439#endif 2530#endif
1440#if EV_USE_INOTIFY 2531#if EV_USE_INOTIFY
1441 infy_fork (EV_A); 2532 infy_fork (EV_A);
1442#endif 2533#endif
1443 2534
1444 if (ev_is_active (&pipeev)) 2535 if (ev_is_active (&pipe_w))
1445 { 2536 {
1446 /* this "locks" the handlers against writing to the pipe */ 2537 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1447 /* while we modify the fd vars */
1448 gotsig = 1;
1449#if EV_ASYNC_ENABLE
1450 gotasync = 1;
1451#endif
1452 2538
1453 ev_ref (EV_A); 2539 ev_ref (EV_A);
1454 ev_io_stop (EV_A_ &pipeev); 2540 ev_io_stop (EV_A_ &pipe_w);
1455 2541
1456#if EV_USE_EVENTFD 2542#if EV_USE_EVENTFD
1457 if (evfd >= 0) 2543 if (evfd >= 0)
1458 close (evfd); 2544 close (evfd);
1459#endif 2545#endif
1460 2546
1461 if (evpipe [0] >= 0) 2547 if (evpipe [0] >= 0)
1462 { 2548 {
1463 close (evpipe [0]); 2549 EV_WIN32_CLOSE_FD (evpipe [0]);
1464 close (evpipe [1]); 2550 EV_WIN32_CLOSE_FD (evpipe [1]);
1465 } 2551 }
1466 2552
2553#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1467 evpipe_init (EV_A); 2554 evpipe_init (EV_A);
1468 /* now iterate over everything, in case we missed something */ 2555 /* now iterate over everything, in case we missed something */
1469 pipecb (EV_A_ &pipeev, EV_READ); 2556 pipecb (EV_A_ &pipe_w, EV_READ);
2557#endif
1470 } 2558 }
1471 2559
1472 postfork = 0; 2560 postfork = 0;
1473} 2561}
1474 2562
1475#if EV_MULTIPLICITY 2563#if EV_MULTIPLICITY
1476 2564
1477struct ev_loop * 2565struct ev_loop * ecb_cold
1478ev_loop_new (unsigned int flags) 2566ev_loop_new (unsigned int flags) EV_THROW
1479{ 2567{
1480 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));
1481 2569
1482 memset (loop, 0, sizeof (struct ev_loop)); 2570 memset (EV_A, 0, sizeof (struct ev_loop));
1483
1484 loop_init (EV_A_ flags); 2571 loop_init (EV_A_ flags);
1485 2572
1486 if (ev_backend (EV_A)) 2573 if (ev_backend (EV_A))
1487 return loop; 2574 return EV_A;
1488 2575
2576 ev_free (EV_A);
1489 return 0; 2577 return 0;
1490} 2578}
1491 2579
1492void 2580#endif /* multiplicity */
1493ev_loop_destroy (EV_P)
1494{
1495 loop_destroy (EV_A);
1496 ev_free (loop);
1497}
1498
1499void
1500ev_loop_fork (EV_P)
1501{
1502 postfork = 1; /* must be in line with ev_default_fork */
1503}
1504 2581
1505#if EV_VERIFY 2582#if EV_VERIFY
1506static void noinline 2583static void noinline ecb_cold
1507verify_watcher (EV_P_ W w) 2584verify_watcher (EV_P_ W w)
1508{ 2585{
1509 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2586 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1510 2587
1511 if (w->pending) 2588 if (w->pending)
1512 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));
1513} 2590}
1514 2591
1515static void noinline 2592static void noinline ecb_cold
1516verify_heap (EV_P_ ANHE *heap, int N) 2593verify_heap (EV_P_ ANHE *heap, int N)
1517{ 2594{
1518 int i; 2595 int i;
1519 2596
1520 for (i = HEAP0; i < N + HEAP0; ++i) 2597 for (i = HEAP0; i < N + HEAP0; ++i)
1521 { 2598 {
1522 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));
1523 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])));
1524 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]))));
1525 2602
1526 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2603 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1527 } 2604 }
1528} 2605}
1529 2606
1530static void noinline 2607static void noinline ecb_cold
1531array_verify (EV_P_ W *ws, int cnt) 2608array_verify (EV_P_ W *ws, int cnt)
1532{ 2609{
1533 while (cnt--) 2610 while (cnt--)
1534 { 2611 {
1535 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2612 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1536 verify_watcher (EV_A_ ws [cnt]); 2613 verify_watcher (EV_A_ ws [cnt]);
1537 } 2614 }
1538} 2615}
1539#endif 2616#endif
1540 2617
1541void 2618#if EV_FEATURE_API
1542ev_loop_verify (EV_P) 2619void ecb_cold
2620ev_verify (EV_P) EV_THROW
1543{ 2621{
1544#if EV_VERIFY 2622#if EV_VERIFY
1545 int i; 2623 int i;
1546 WL w; 2624 WL w, w2;
1547 2625
1548 assert (activecnt >= -1); 2626 assert (activecnt >= -1);
1549 2627
1550 assert (fdchangemax >= fdchangecnt); 2628 assert (fdchangemax >= fdchangecnt);
1551 for (i = 0; i < fdchangecnt; ++i) 2629 for (i = 0; i < fdchangecnt; ++i)
1552 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 2630 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1553 2631
1554 assert (anfdmax >= 0); 2632 assert (anfdmax >= 0);
1555 for (i = 0; i < anfdmax; ++i) 2633 for (i = 0; i < anfdmax; ++i)
2634 {
2635 int j = 0;
2636
1556 for (w = anfds [i].head; w; w = w->next) 2637 for (w = w2 = anfds [i].head; w; w = w->next)
1557 { 2638 {
1558 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
1559 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 2647 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1560 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));
1561 } 2649 }
2650 }
1562 2651
1563 assert (timermax >= timercnt); 2652 assert (timermax >= timercnt);
1564 verify_heap (EV_A_ timers, timercnt); 2653 verify_heap (EV_A_ timers, timercnt);
1565 2654
1566#if EV_PERIODIC_ENABLE 2655#if EV_PERIODIC_ENABLE
… …
1581#if EV_FORK_ENABLE 2670#if EV_FORK_ENABLE
1582 assert (forkmax >= forkcnt); 2671 assert (forkmax >= forkcnt);
1583 array_verify (EV_A_ (W *)forks, forkcnt); 2672 array_verify (EV_A_ (W *)forks, forkcnt);
1584#endif 2673#endif
1585 2674
2675#if EV_CLEANUP_ENABLE
2676 assert (cleanupmax >= cleanupcnt);
2677 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2678#endif
2679
1586#if EV_ASYNC_ENABLE 2680#if EV_ASYNC_ENABLE
1587 assert (asyncmax >= asynccnt); 2681 assert (asyncmax >= asynccnt);
1588 array_verify (EV_A_ (W *)asyncs, asynccnt); 2682 array_verify (EV_A_ (W *)asyncs, asynccnt);
1589#endif 2683#endif
1590 2684
2685#if EV_PREPARE_ENABLE
1591 assert (preparemax >= preparecnt); 2686 assert (preparemax >= preparecnt);
1592 array_verify (EV_A_ (W *)prepares, preparecnt); 2687 array_verify (EV_A_ (W *)prepares, preparecnt);
2688#endif
1593 2689
2690#if EV_CHECK_ENABLE
1594 assert (checkmax >= checkcnt); 2691 assert (checkmax >= checkcnt);
1595 array_verify (EV_A_ (W *)checks, checkcnt); 2692 array_verify (EV_A_ (W *)checks, checkcnt);
2693#endif
1596 2694
1597# if 0 2695# if 0
2696#if EV_CHILD_ENABLE
1598 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)
1599 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2698 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2699#endif
1600# endif 2700# endif
1601#endif 2701#endif
1602} 2702}
1603 2703#endif
1604#endif /* multiplicity */
1605 2704
1606#if EV_MULTIPLICITY 2705#if EV_MULTIPLICITY
1607struct ev_loop * 2706struct ev_loop * ecb_cold
1608ev_default_loop_init (unsigned int flags)
1609#else 2707#else
1610int 2708int
2709#endif
1611ev_default_loop (unsigned int flags) 2710ev_default_loop (unsigned int flags) EV_THROW
1612#endif
1613{ 2711{
1614 if (!ev_default_loop_ptr) 2712 if (!ev_default_loop_ptr)
1615 { 2713 {
1616#if EV_MULTIPLICITY 2714#if EV_MULTIPLICITY
1617 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2715 EV_P = ev_default_loop_ptr = &default_loop_struct;
1618#else 2716#else
1619 ev_default_loop_ptr = 1; 2717 ev_default_loop_ptr = 1;
1620#endif 2718#endif
1621 2719
1622 loop_init (EV_A_ flags); 2720 loop_init (EV_A_ flags);
1623 2721
1624 if (ev_backend (EV_A)) 2722 if (ev_backend (EV_A))
1625 { 2723 {
1626#ifndef _WIN32 2724#if EV_CHILD_ENABLE
1627 ev_signal_init (&childev, childcb, SIGCHLD); 2725 ev_signal_init (&childev, childcb, SIGCHLD);
1628 ev_set_priority (&childev, EV_MAXPRI); 2726 ev_set_priority (&childev, EV_MAXPRI);
1629 ev_signal_start (EV_A_ &childev); 2727 ev_signal_start (EV_A_ &childev);
1630 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2728 ev_unref (EV_A); /* child watcher should not keep loop alive */
1631#endif 2729#endif
… …
1636 2734
1637 return ev_default_loop_ptr; 2735 return ev_default_loop_ptr;
1638} 2736}
1639 2737
1640void 2738void
1641ev_default_destroy (void) 2739ev_loop_fork (EV_P) EV_THROW
1642{ 2740{
1643#if EV_MULTIPLICITY 2741 postfork = 1;
1644 struct ev_loop *loop = ev_default_loop_ptr;
1645#endif
1646
1647 ev_default_loop_ptr = 0;
1648
1649#ifndef _WIN32
1650 ev_ref (EV_A); /* child watcher */
1651 ev_signal_stop (EV_A_ &childev);
1652#endif
1653
1654 loop_destroy (EV_A);
1655}
1656
1657void
1658ev_default_fork (void)
1659{
1660#if EV_MULTIPLICITY
1661 struct ev_loop *loop = ev_default_loop_ptr;
1662#endif
1663
1664 postfork = 1; /* must be in line with ev_loop_fork */
1665} 2742}
1666 2743
1667/*****************************************************************************/ 2744/*****************************************************************************/
1668 2745
1669void 2746void
1670ev_invoke (EV_P_ void *w, int revents) 2747ev_invoke (EV_P_ void *w, int revents)
1671{ 2748{
1672 EV_CB_INVOKE ((W)w, revents); 2749 EV_CB_INVOKE ((W)w, revents);
1673} 2750}
1674 2751
1675void inline_speed 2752unsigned int
1676call_pending (EV_P) 2753ev_pending_count (EV_P) EV_THROW
1677{ 2754{
1678 int pri; 2755 int pri;
2756 unsigned int count = 0;
1679 2757
1680 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 */
1681 while (pendingcnt [pri]) 2768 while (pendingcnt [pendingpri])
1682 { 2769 {
1683 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2770 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1684 2771
1685 if (expect_true (p->w))
1686 {
1687 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1688
1689 p->w->pending = 0; 2772 p->w->pending = 0;
1690 EV_CB_INVOKE (p->w, p->events); 2773 EV_CB_INVOKE (p->w, p->events);
1691 EV_FREQUENT_CHECK; 2774 EV_FREQUENT_CHECK;
1692 }
1693 } 2775 }
1694} 2776}
1695 2777
1696#if EV_IDLE_ENABLE 2778#if EV_IDLE_ENABLE
1697void inline_size 2779/* make idle watchers pending. this handles the "call-idle */
2780/* only when higher priorities are idle" logic */
2781inline_size void
1698idle_reify (EV_P) 2782idle_reify (EV_P)
1699{ 2783{
1700 if (expect_false (idleall)) 2784 if (expect_false (idleall))
1701 { 2785 {
1702 int pri; 2786 int pri;
… …
1714 } 2798 }
1715 } 2799 }
1716} 2800}
1717#endif 2801#endif
1718 2802
1719void inline_size 2803/* make timers pending */
2804inline_size void
1720timers_reify (EV_P) 2805timers_reify (EV_P)
1721{ 2806{
1722 EV_FREQUENT_CHECK; 2807 EV_FREQUENT_CHECK;
1723 2808
1724 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2809 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1725 { 2810 {
1726 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2811 do
1727
1728 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1729
1730 /* first reschedule or stop timer */
1731 if (w->repeat)
1732 { 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 {
1733 ev_at (w) += w->repeat; 2820 ev_at (w) += w->repeat;
1734 if (ev_at (w) < mn_now) 2821 if (ev_at (w) < mn_now)
1735 ev_at (w) = mn_now; 2822 ev_at (w) = mn_now;
1736 2823
1737 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.));
1738 2825
1739 ANHE_at_cache (timers [HEAP0]); 2826 ANHE_at_cache (timers [HEAP0]);
1740 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);
1741 } 2834 }
1742 else 2835 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1743 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1744 2836
1745 EV_FREQUENT_CHECK; 2837 feed_reverse_done (EV_A_ EV_TIMER);
1746 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1747 } 2838 }
1748} 2839}
1749 2840
1750#if EV_PERIODIC_ENABLE 2841#if EV_PERIODIC_ENABLE
1751void 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
1752periodics_reify (EV_P) 2869periodics_reify (EV_P)
1753{ 2870{
1754 EV_FREQUENT_CHECK; 2871 EV_FREQUENT_CHECK;
1755 2872
1756 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2873 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1757 { 2874 {
1758 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2875 do
1759
1760 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1761
1762 /* first reschedule or stop timer */
1763 if (w->reschedule_cb)
1764 { 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 {
1765 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2884 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1766 2885
1767 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));
1768 2887
1769 ANHE_at_cache (periodics [HEAP0]); 2888 ANHE_at_cache (periodics [HEAP0]);
1770 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);
1771 } 2902 }
1772 else if (w->interval) 2903 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1773 {
1774 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1775 /* if next trigger time is not sufficiently in the future, put it there */
1776 /* this might happen because of floating point inexactness */
1777 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1778 {
1779 ev_at (w) += w->interval;
1780 2904
1781 /* if interval is unreasonably low we might still have a time in the past */
1782 /* so correct this. this will make the periodic very inexact, but the user */
1783 /* has effectively asked to get triggered more often than possible */
1784 if (ev_at (w) < ev_rt_now)
1785 ev_at (w) = ev_rt_now;
1786 }
1787
1788 ANHE_at_cache (periodics [HEAP0]);
1789 downheap (periodics, periodiccnt, HEAP0);
1790 }
1791 else
1792 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1793
1794 EV_FREQUENT_CHECK;
1795 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2905 feed_reverse_done (EV_A_ EV_PERIODIC);
1796 } 2906 }
1797} 2907}
1798 2908
2909/* simply recalculate all periodics */
2910/* TODO: maybe ensure that at least one event happens when jumping forward? */
1799static void noinline 2911static void noinline ecb_cold
1800periodics_reschedule (EV_P) 2912periodics_reschedule (EV_P)
1801{ 2913{
1802 int i; 2914 int i;
1803 2915
1804 /* adjust periodics after time jump */ 2916 /* adjust periodics after time jump */
… …
1807 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2919 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1808 2920
1809 if (w->reschedule_cb) 2921 if (w->reschedule_cb)
1810 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2922 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1811 else if (w->interval) 2923 else if (w->interval)
1812 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2924 periodic_recalc (EV_A_ w);
1813 2925
1814 ANHE_at_cache (periodics [i]); 2926 ANHE_at_cache (periodics [i]);
1815 } 2927 }
1816 2928
1817 reheap (periodics, periodiccnt); 2929 reheap (periodics, periodiccnt);
1818} 2930}
1819#endif 2931#endif
1820 2932
1821void 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
1822time_update (EV_P_ ev_tstamp max_block) 2950time_update (EV_P_ ev_tstamp max_block)
1823{ 2951{
1824 int i;
1825
1826#if EV_USE_MONOTONIC 2952#if EV_USE_MONOTONIC
1827 if (expect_true (have_monotonic)) 2953 if (expect_true (have_monotonic))
1828 { 2954 {
2955 int i;
1829 ev_tstamp odiff = rtmn_diff; 2956 ev_tstamp odiff = rtmn_diff;
1830 2957
1831 mn_now = get_clock (); 2958 mn_now = get_clock ();
1832 2959
1833 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2960 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1849 * 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
1850 * in the unlikely event of having been preempted here. 2977 * in the unlikely event of having been preempted here.
1851 */ 2978 */
1852 for (i = 4; --i; ) 2979 for (i = 4; --i; )
1853 { 2980 {
2981 ev_tstamp diff;
1854 rtmn_diff = ev_rt_now - mn_now; 2982 rtmn_diff = ev_rt_now - mn_now;
1855 2983
2984 diff = odiff - rtmn_diff;
2985
1856 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2986 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1857 return; /* all is well */ 2987 return; /* all is well */
1858 2988
1859 ev_rt_now = ev_time (); 2989 ev_rt_now = ev_time ();
1860 mn_now = get_clock (); 2990 mn_now = get_clock ();
1861 now_floor = mn_now; 2991 now_floor = mn_now;
1862 } 2992 }
1863 2993
2994 /* no timer adjustment, as the monotonic clock doesn't jump */
2995 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1864# if EV_PERIODIC_ENABLE 2996# if EV_PERIODIC_ENABLE
1865 periodics_reschedule (EV_A); 2997 periodics_reschedule (EV_A);
1866# endif 2998# endif
1867 /* no timer adjustment, as the monotonic clock doesn't jump */
1868 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1869 } 2999 }
1870 else 3000 else
1871#endif 3001#endif
1872 { 3002 {
1873 ev_rt_now = ev_time (); 3003 ev_rt_now = ev_time ();
1874 3004
1875 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))
1876 { 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);
1877#if EV_PERIODIC_ENABLE 3009#if EV_PERIODIC_ENABLE
1878 periodics_reschedule (EV_A); 3010 periodics_reschedule (EV_A);
1879#endif 3011#endif
1880 /* adjust timers. this is easy, as the offset is the same for all of them */
1881 for (i = 0; i < timercnt; ++i)
1882 {
1883 ANHE *he = timers + i + HEAP0;
1884 ANHE_w (*he)->at += ev_rt_now - mn_now;
1885 ANHE_at_cache (*he);
1886 }
1887 } 3012 }
1888 3013
1889 mn_now = ev_rt_now; 3014 mn_now = ev_rt_now;
1890 } 3015 }
1891} 3016}
1892 3017
1893void 3018int
1894ev_ref (EV_P)
1895{
1896 ++activecnt;
1897}
1898
1899void
1900ev_unref (EV_P)
1901{
1902 --activecnt;
1903}
1904
1905void
1906ev_now_update (EV_P)
1907{
1908 time_update (EV_A_ 1e100);
1909}
1910
1911static int loop_done;
1912
1913void
1914ev_loop (EV_P_ int flags) 3019ev_run (EV_P_ int flags)
1915{ 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
1916 loop_done = EVUNLOOP_CANCEL; 3027 loop_done = EVBREAK_CANCEL;
1917 3028
1918 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 */
1919 3030
1920 do 3031 do
1921 { 3032 {
1922#if EV_VERIFY >= 2 3033#if EV_VERIFY >= 2
1923 ev_loop_verify (EV_A); 3034 ev_verify (EV_A);
1924#endif 3035#endif
1925 3036
1926#ifndef _WIN32 3037#ifndef _WIN32
1927 if (expect_false (curpid)) /* penalise the forking check even more */ 3038 if (expect_false (curpid)) /* penalise the forking check even more */
1928 if (expect_false (getpid () != curpid)) 3039 if (expect_false (getpid () != curpid))
… …
1936 /* we might have forked, so queue fork handlers */ 3047 /* we might have forked, so queue fork handlers */
1937 if (expect_false (postfork)) 3048 if (expect_false (postfork))
1938 if (forkcnt) 3049 if (forkcnt)
1939 { 3050 {
1940 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3051 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1941 call_pending (EV_A); 3052 EV_INVOKE_PENDING;
1942 } 3053 }
1943#endif 3054#endif
1944 3055
3056#if EV_PREPARE_ENABLE
1945 /* queue prepare watchers (and execute them) */ 3057 /* queue prepare watchers (and execute them) */
1946 if (expect_false (preparecnt)) 3058 if (expect_false (preparecnt))
1947 { 3059 {
1948 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1949 call_pending (EV_A); 3061 EV_INVOKE_PENDING;
1950 } 3062 }
3063#endif
1951 3064
1952 if (expect_false (!activecnt)) 3065 if (expect_false (loop_done))
1953 break; 3066 break;
1954 3067
1955 /* we might have forked, so reify kernel state if necessary */ 3068 /* we might have forked, so reify kernel state if necessary */
1956 if (expect_false (postfork)) 3069 if (expect_false (postfork))
1957 loop_fork (EV_A); 3070 loop_fork (EV_A);
… …
1962 /* calculate blocking time */ 3075 /* calculate blocking time */
1963 { 3076 {
1964 ev_tstamp waittime = 0.; 3077 ev_tstamp waittime = 0.;
1965 ev_tstamp sleeptime = 0.; 3078 ev_tstamp sleeptime = 0.;
1966 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
1967 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3091 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1968 { 3092 {
1969 /* update time to cancel out callback processing overhead */
1970 time_update (EV_A_ 1e100);
1971
1972 waittime = MAX_BLOCKTIME; 3093 waittime = MAX_BLOCKTIME;
1973 3094
1974 if (timercnt) 3095 if (timercnt)
1975 { 3096 {
1976 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3097 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1977 if (waittime > to) waittime = to; 3098 if (waittime > to) waittime = to;
1978 } 3099 }
1979 3100
1980#if EV_PERIODIC_ENABLE 3101#if EV_PERIODIC_ENABLE
1981 if (periodiccnt) 3102 if (periodiccnt)
1982 { 3103 {
1983 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3104 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1984 if (waittime > to) waittime = to; 3105 if (waittime > to) waittime = to;
1985 } 3106 }
1986#endif 3107#endif
1987 3108
3109 /* don't let timeouts decrease the waittime below timeout_blocktime */
1988 if (expect_false (waittime < timeout_blocktime)) 3110 if (expect_false (waittime < timeout_blocktime))
1989 waittime = timeout_blocktime; 3111 waittime = timeout_blocktime;
1990 3112
1991 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;
1992 3117
3118 /* extra check because io_blocktime is commonly 0 */
1993 if (expect_true (sleeptime > io_blocktime)) 3119 if (expect_false (io_blocktime))
1994 sleeptime = io_blocktime;
1995
1996 if (sleeptime)
1997 { 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 {
1998 ev_sleep (sleeptime); 3128 ev_sleep (sleeptime);
1999 waittime -= sleeptime; 3129 waittime -= sleeptime;
3130 }
2000 } 3131 }
2001 } 3132 }
2002 3133
3134#if EV_FEATURE_API
2003 ++loop_count; 3135 ++loop_count;
3136#endif
3137 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2004 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
2005 3150
2006 /* update ev_rt_now, do magic */ 3151 /* update ev_rt_now, do magic */
2007 time_update (EV_A_ waittime + sleeptime); 3152 time_update (EV_A_ waittime + sleeptime);
2008 } 3153 }
2009 3154
… …
2016#if EV_IDLE_ENABLE 3161#if EV_IDLE_ENABLE
2017 /* queue idle watchers unless other events are pending */ 3162 /* queue idle watchers unless other events are pending */
2018 idle_reify (EV_A); 3163 idle_reify (EV_A);
2019#endif 3164#endif
2020 3165
3166#if EV_CHECK_ENABLE
2021 /* queue check watchers, to be executed first */ 3167 /* queue check watchers, to be executed first */
2022 if (expect_false (checkcnt)) 3168 if (expect_false (checkcnt))
2023 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3169 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3170#endif
2024 3171
2025 call_pending (EV_A); 3172 EV_INVOKE_PENDING;
2026 } 3173 }
2027 while (expect_true ( 3174 while (expect_true (
2028 activecnt 3175 activecnt
2029 && !loop_done 3176 && !loop_done
2030 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3177 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2031 )); 3178 ));
2032 3179
2033 if (loop_done == EVUNLOOP_ONE) 3180 if (loop_done == EVBREAK_ONE)
2034 loop_done = EVUNLOOP_CANCEL; 3181 loop_done = EVBREAK_CANCEL;
3182
3183#if EV_FEATURE_API
3184 --loop_depth;
3185#endif
3186
3187 return activecnt;
2035} 3188}
2036 3189
2037void 3190void
2038ev_unloop (EV_P_ int how) 3191ev_break (EV_P_ int how) EV_THROW
2039{ 3192{
2040 loop_done = how; 3193 loop_done = how;
2041} 3194}
2042 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
2043/*****************************************************************************/ 3233/*****************************************************************************/
3234/* singly-linked list management, used when the expected list length is short */
2044 3235
2045void inline_size 3236inline_size void
2046wlist_add (WL *head, WL elem) 3237wlist_add (WL *head, WL elem)
2047{ 3238{
2048 elem->next = *head; 3239 elem->next = *head;
2049 *head = elem; 3240 *head = elem;
2050} 3241}
2051 3242
2052void inline_size 3243inline_size void
2053wlist_del (WL *head, WL elem) 3244wlist_del (WL *head, WL elem)
2054{ 3245{
2055 while (*head) 3246 while (*head)
2056 { 3247 {
2057 if (*head == elem) 3248 if (expect_true (*head == elem))
2058 { 3249 {
2059 *head = elem->next; 3250 *head = elem->next;
2060 return; 3251 break;
2061 } 3252 }
2062 3253
2063 head = &(*head)->next; 3254 head = &(*head)->next;
2064 } 3255 }
2065} 3256}
2066 3257
2067void inline_speed 3258/* internal, faster, version of ev_clear_pending */
3259inline_speed void
2068clear_pending (EV_P_ W w) 3260clear_pending (EV_P_ W w)
2069{ 3261{
2070 if (w->pending) 3262 if (w->pending)
2071 { 3263 {
2072 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3264 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2073 w->pending = 0; 3265 w->pending = 0;
2074 } 3266 }
2075} 3267}
2076 3268
2077int 3269int
2078ev_clear_pending (EV_P_ void *w) 3270ev_clear_pending (EV_P_ void *w) EV_THROW
2079{ 3271{
2080 W w_ = (W)w; 3272 W w_ = (W)w;
2081 int pending = w_->pending; 3273 int pending = w_->pending;
2082 3274
2083 if (expect_true (pending)) 3275 if (expect_true (pending))
2084 { 3276 {
2085 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3277 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3278 p->w = (W)&pending_w;
2086 w_->pending = 0; 3279 w_->pending = 0;
2087 p->w = 0;
2088 return p->events; 3280 return p->events;
2089 } 3281 }
2090 else 3282 else
2091 return 0; 3283 return 0;
2092} 3284}
2093 3285
2094void inline_size 3286inline_size void
2095pri_adjust (EV_P_ W w) 3287pri_adjust (EV_P_ W w)
2096{ 3288{
2097 int pri = w->priority; 3289 int pri = ev_priority (w);
2098 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3290 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2099 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3291 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2100 w->priority = pri; 3292 ev_set_priority (w, pri);
2101} 3293}
2102 3294
2103void inline_speed 3295inline_speed void
2104ev_start (EV_P_ W w, int active) 3296ev_start (EV_P_ W w, int active)
2105{ 3297{
2106 pri_adjust (EV_A_ w); 3298 pri_adjust (EV_A_ w);
2107 w->active = active; 3299 w->active = active;
2108 ev_ref (EV_A); 3300 ev_ref (EV_A);
2109} 3301}
2110 3302
2111void inline_size 3303inline_size void
2112ev_stop (EV_P_ W w) 3304ev_stop (EV_P_ W w)
2113{ 3305{
2114 ev_unref (EV_A); 3306 ev_unref (EV_A);
2115 w->active = 0; 3307 w->active = 0;
2116} 3308}
2117 3309
2118/*****************************************************************************/ 3310/*****************************************************************************/
2119 3311
2120void noinline 3312void noinline
2121ev_io_start (EV_P_ ev_io *w) 3313ev_io_start (EV_P_ ev_io *w) EV_THROW
2122{ 3314{
2123 int fd = w->fd; 3315 int fd = w->fd;
2124 3316
2125 if (expect_false (ev_is_active (w))) 3317 if (expect_false (ev_is_active (w)))
2126 return; 3318 return;
2127 3319
2128 assert (("ev_io_start called with negative fd", fd >= 0)); 3320 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2129 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))));
2130 3322
2131 EV_FREQUENT_CHECK; 3323 EV_FREQUENT_CHECK;
2132 3324
2133 ev_start (EV_A_ (W)w, 1); 3325 ev_start (EV_A_ (W)w, 1);
2134 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3326 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2135 wlist_add (&anfds[fd].head, (WL)w); 3327 wlist_add (&anfds[fd].head, (WL)w);
2136 3328
3329 /* common bug, apparently */
3330 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3331
2137 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 3332 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2138 w->events &= ~EV_IOFDSET; 3333 w->events &= ~EV__IOFDSET;
2139 3334
2140 EV_FREQUENT_CHECK; 3335 EV_FREQUENT_CHECK;
2141} 3336}
2142 3337
2143void noinline 3338void noinline
2144ev_io_stop (EV_P_ ev_io *w) 3339ev_io_stop (EV_P_ ev_io *w) EV_THROW
2145{ 3340{
2146 clear_pending (EV_A_ (W)w); 3341 clear_pending (EV_A_ (W)w);
2147 if (expect_false (!ev_is_active (w))) 3342 if (expect_false (!ev_is_active (w)))
2148 return; 3343 return;
2149 3344
2150 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));
2151 3346
2152 EV_FREQUENT_CHECK; 3347 EV_FREQUENT_CHECK;
2153 3348
2154 wlist_del (&anfds[w->fd].head, (WL)w); 3349 wlist_del (&anfds[w->fd].head, (WL)w);
2155 ev_stop (EV_A_ (W)w); 3350 ev_stop (EV_A_ (W)w);
2156 3351
2157 fd_change (EV_A_ w->fd, 1); 3352 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2158 3353
2159 EV_FREQUENT_CHECK; 3354 EV_FREQUENT_CHECK;
2160} 3355}
2161 3356
2162void noinline 3357void noinline
2163ev_timer_start (EV_P_ ev_timer *w) 3358ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2164{ 3359{
2165 if (expect_false (ev_is_active (w))) 3360 if (expect_false (ev_is_active (w)))
2166 return; 3361 return;
2167 3362
2168 ev_at (w) += mn_now; 3363 ev_at (w) += mn_now;
2169 3364
2170 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.));
2171 3366
2172 EV_FREQUENT_CHECK; 3367 EV_FREQUENT_CHECK;
2173 3368
2174 ++timercnt; 3369 ++timercnt;
2175 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3370 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2178 ANHE_at_cache (timers [ev_active (w)]); 3373 ANHE_at_cache (timers [ev_active (w)]);
2179 upheap (timers, ev_active (w)); 3374 upheap (timers, ev_active (w));
2180 3375
2181 EV_FREQUENT_CHECK; 3376 EV_FREQUENT_CHECK;
2182 3377
2183 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3378 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2184} 3379}
2185 3380
2186void noinline 3381void noinline
2187ev_timer_stop (EV_P_ ev_timer *w) 3382ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2188{ 3383{
2189 clear_pending (EV_A_ (W)w); 3384 clear_pending (EV_A_ (W)w);
2190 if (expect_false (!ev_is_active (w))) 3385 if (expect_false (!ev_is_active (w)))
2191 return; 3386 return;
2192 3387
2193 EV_FREQUENT_CHECK; 3388 EV_FREQUENT_CHECK;
2194 3389
2195 { 3390 {
2196 int active = ev_active (w); 3391 int active = ev_active (w);
2197 3392
2198 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 3393 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2199 3394
2200 --timercnt; 3395 --timercnt;
2201 3396
2202 if (expect_true (active < timercnt + HEAP0)) 3397 if (expect_true (active < timercnt + HEAP0))
2203 { 3398 {
2204 timers [active] = timers [timercnt + HEAP0]; 3399 timers [active] = timers [timercnt + HEAP0];
2205 adjustheap (timers, timercnt, active); 3400 adjustheap (timers, timercnt, active);
2206 } 3401 }
2207 } 3402 }
2208 3403
2209 EV_FREQUENT_CHECK;
2210
2211 ev_at (w) -= mn_now; 3404 ev_at (w) -= mn_now;
2212 3405
2213 ev_stop (EV_A_ (W)w); 3406 ev_stop (EV_A_ (W)w);
3407
3408 EV_FREQUENT_CHECK;
2214} 3409}
2215 3410
2216void noinline 3411void noinline
2217ev_timer_again (EV_P_ ev_timer *w) 3412ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2218{ 3413{
2219 EV_FREQUENT_CHECK; 3414 EV_FREQUENT_CHECK;
3415
3416 clear_pending (EV_A_ (W)w);
2220 3417
2221 if (ev_is_active (w)) 3418 if (ev_is_active (w))
2222 { 3419 {
2223 if (w->repeat) 3420 if (w->repeat)
2224 { 3421 {
… …
2236 } 3433 }
2237 3434
2238 EV_FREQUENT_CHECK; 3435 EV_FREQUENT_CHECK;
2239} 3436}
2240 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
2241#if EV_PERIODIC_ENABLE 3444#if EV_PERIODIC_ENABLE
2242void noinline 3445void noinline
2243ev_periodic_start (EV_P_ ev_periodic *w) 3446ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2244{ 3447{
2245 if (expect_false (ev_is_active (w))) 3448 if (expect_false (ev_is_active (w)))
2246 return; 3449 return;
2247 3450
2248 if (w->reschedule_cb) 3451 if (w->reschedule_cb)
2249 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3452 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2250 else if (w->interval) 3453 else if (w->interval)
2251 { 3454 {
2252 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.));
2253 /* this formula differs from the one in periodic_reify because we do not always round up */ 3456 periodic_recalc (EV_A_ w);
2254 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2255 } 3457 }
2256 else 3458 else
2257 ev_at (w) = w->offset; 3459 ev_at (w) = w->offset;
2258 3460
2259 EV_FREQUENT_CHECK; 3461 EV_FREQUENT_CHECK;
… …
2265 ANHE_at_cache (periodics [ev_active (w)]); 3467 ANHE_at_cache (periodics [ev_active (w)]);
2266 upheap (periodics, ev_active (w)); 3468 upheap (periodics, ev_active (w));
2267 3469
2268 EV_FREQUENT_CHECK; 3470 EV_FREQUENT_CHECK;
2269 3471
2270 /*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));*/
2271} 3473}
2272 3474
2273void noinline 3475void noinline
2274ev_periodic_stop (EV_P_ ev_periodic *w) 3476ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2275{ 3477{
2276 clear_pending (EV_A_ (W)w); 3478 clear_pending (EV_A_ (W)w);
2277 if (expect_false (!ev_is_active (w))) 3479 if (expect_false (!ev_is_active (w)))
2278 return; 3480 return;
2279 3481
2280 EV_FREQUENT_CHECK; 3482 EV_FREQUENT_CHECK;
2281 3483
2282 { 3484 {
2283 int active = ev_active (w); 3485 int active = ev_active (w);
2284 3486
2285 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 3487 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2286 3488
2287 --periodiccnt; 3489 --periodiccnt;
2288 3490
2289 if (expect_true (active < periodiccnt + HEAP0)) 3491 if (expect_true (active < periodiccnt + HEAP0))
2290 { 3492 {
2291 periodics [active] = periodics [periodiccnt + HEAP0]; 3493 periodics [active] = periodics [periodiccnt + HEAP0];
2292 adjustheap (periodics, periodiccnt, active); 3494 adjustheap (periodics, periodiccnt, active);
2293 } 3495 }
2294 } 3496 }
2295 3497
2296 EV_FREQUENT_CHECK;
2297
2298 ev_stop (EV_A_ (W)w); 3498 ev_stop (EV_A_ (W)w);
3499
3500 EV_FREQUENT_CHECK;
2299} 3501}
2300 3502
2301void noinline 3503void noinline
2302ev_periodic_again (EV_P_ ev_periodic *w) 3504ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2303{ 3505{
2304 /* TODO: use adjustheap and recalculation */ 3506 /* TODO: use adjustheap and recalculation */
2305 ev_periodic_stop (EV_A_ w); 3507 ev_periodic_stop (EV_A_ w);
2306 ev_periodic_start (EV_A_ w); 3508 ev_periodic_start (EV_A_ w);
2307} 3509}
… …
2309 3511
2310#ifndef SA_RESTART 3512#ifndef SA_RESTART
2311# define SA_RESTART 0 3513# define SA_RESTART 0
2312#endif 3514#endif
2313 3515
3516#if EV_SIGNAL_ENABLE
3517
2314void noinline 3518void noinline
2315ev_signal_start (EV_P_ ev_signal *w) 3519ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2316{ 3520{
2317#if EV_MULTIPLICITY
2318 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2319#endif
2320 if (expect_false (ev_is_active (w))) 3521 if (expect_false (ev_is_active (w)))
2321 return; 3522 return;
2322 3523
2323 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));
2324 3525
2325 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));
2326 3529
2327 EV_FREQUENT_CHECK; 3530 signals [w->signum - 1].loop = EV_A;
3531#endif
2328 3532
3533 EV_FREQUENT_CHECK;
3534
3535#if EV_USE_SIGNALFD
3536 if (sigfd == -2)
2329 { 3537 {
2330#ifndef _WIN32 3538 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2331 sigset_t full, prev; 3539 if (sigfd < 0 && errno == EINVAL)
2332 sigfillset (&full); 3540 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2333 sigprocmask (SIG_SETMASK, &full, &prev);
2334#endif
2335 3541
2336 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 */
2337 3545
2338#ifndef _WIN32 3546 sigemptyset (&sigfd_set);
2339 sigprocmask (SIG_SETMASK, &prev, 0); 3547
2340#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 }
2341 } 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
2342 3564
2343 ev_start (EV_A_ (W)w, 1); 3565 ev_start (EV_A_ (W)w, 1);
2344 wlist_add (&signals [w->signum - 1].head, (WL)w); 3566 wlist_add (&signals [w->signum - 1].head, (WL)w);
2345 3567
2346 if (!((WL)w)->next) 3568 if (!((WL)w)->next)
3569# if EV_USE_SIGNALFD
3570 if (sigfd < 0) /*TODO*/
3571# endif
2347 { 3572 {
2348#if _WIN32 3573# ifdef _WIN32
3574 evpipe_init (EV_A);
3575
2349 signal (w->signum, ev_sighandler); 3576 signal (w->signum, ev_sighandler);
2350#else 3577# else
2351 struct sigaction sa; 3578 struct sigaction sa;
3579
3580 evpipe_init (EV_A);
3581
2352 sa.sa_handler = ev_sighandler; 3582 sa.sa_handler = ev_sighandler;
2353 sigfillset (&sa.sa_mask); 3583 sigfillset (&sa.sa_mask);
2354 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 */
2355 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 }
2356#endif 3593#endif
2357 } 3594 }
2358 3595
2359 EV_FREQUENT_CHECK; 3596 EV_FREQUENT_CHECK;
2360} 3597}
2361 3598
2362void noinline 3599void noinline
2363ev_signal_stop (EV_P_ ev_signal *w) 3600ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2364{ 3601{
2365 clear_pending (EV_A_ (W)w); 3602 clear_pending (EV_A_ (W)w);
2366 if (expect_false (!ev_is_active (w))) 3603 if (expect_false (!ev_is_active (w)))
2367 return; 3604 return;
2368 3605
… …
2370 3607
2371 wlist_del (&signals [w->signum - 1].head, (WL)w); 3608 wlist_del (&signals [w->signum - 1].head, (WL)w);
2372 ev_stop (EV_A_ (W)w); 3609 ev_stop (EV_A_ (W)w);
2373 3610
2374 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
2375 signal (w->signum, SIG_DFL); 3630 signal (w->signum, SIG_DFL);
3631 }
2376 3632
2377 EV_FREQUENT_CHECK; 3633 EV_FREQUENT_CHECK;
2378} 3634}
3635
3636#endif
3637
3638#if EV_CHILD_ENABLE
2379 3639
2380void 3640void
2381ev_child_start (EV_P_ ev_child *w) 3641ev_child_start (EV_P_ ev_child *w) EV_THROW
2382{ 3642{
2383#if EV_MULTIPLICITY 3643#if EV_MULTIPLICITY
2384 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));
2385#endif 3645#endif
2386 if (expect_false (ev_is_active (w))) 3646 if (expect_false (ev_is_active (w)))
2387 return; 3647 return;
2388 3648
2389 EV_FREQUENT_CHECK; 3649 EV_FREQUENT_CHECK;
2390 3650
2391 ev_start (EV_A_ (W)w, 1); 3651 ev_start (EV_A_ (W)w, 1);
2392 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3652 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2393 3653
2394 EV_FREQUENT_CHECK; 3654 EV_FREQUENT_CHECK;
2395} 3655}
2396 3656
2397void 3657void
2398ev_child_stop (EV_P_ ev_child *w) 3658ev_child_stop (EV_P_ ev_child *w) EV_THROW
2399{ 3659{
2400 clear_pending (EV_A_ (W)w); 3660 clear_pending (EV_A_ (W)w);
2401 if (expect_false (!ev_is_active (w))) 3661 if (expect_false (!ev_is_active (w)))
2402 return; 3662 return;
2403 3663
2404 EV_FREQUENT_CHECK; 3664 EV_FREQUENT_CHECK;
2405 3665
2406 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3666 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2407 ev_stop (EV_A_ (W)w); 3667 ev_stop (EV_A_ (W)w);
2408 3668
2409 EV_FREQUENT_CHECK; 3669 EV_FREQUENT_CHECK;
2410} 3670}
3671
3672#endif
2411 3673
2412#if EV_STAT_ENABLE 3674#if EV_STAT_ENABLE
2413 3675
2414# ifdef _WIN32 3676# ifdef _WIN32
2415# undef lstat 3677# undef lstat
2416# define lstat(a,b) _stati64 (a,b) 3678# define lstat(a,b) _stati64 (a,b)
2417# endif 3679# endif
2418 3680
2419#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 */
2420#define MIN_STAT_INTERVAL 0.1074891 3683#define MIN_STAT_INTERVAL 0.1074891
2421 3684
2422static 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);
2423 3686
2424#if EV_USE_INOTIFY 3687#if EV_USE_INOTIFY
2425# 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)
2426 3691
2427static void noinline 3692static void noinline
2428infy_add (EV_P_ ev_stat *w) 3693infy_add (EV_P_ ev_stat *w)
2429{ 3694{
2430 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);
2431 3696
2432 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 */
2433 { 3717 }
2434 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;
2435 3722
2436 /* monitor some parent directory for speedup hints */ 3723 /* if path is not there, monitor some parent directory for speedup hints */
2437 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3724 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2438 /* but an efficiency issue only */ 3725 /* but an efficiency issue only */
2439 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3726 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2440 { 3727 {
2441 char path [4096]; 3728 char path [4096];
2442 strcpy (path, w->path); 3729 strcpy (path, w->path);
… …
2446 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3733 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2447 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3734 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2448 3735
2449 char *pend = strrchr (path, '/'); 3736 char *pend = strrchr (path, '/');
2450 3737
2451 if (!pend) 3738 if (!pend || pend == path)
2452 break; /* whoops, no '/', complain to your admin */ 3739 break;
2453 3740
2454 *pend = 0; 3741 *pend = 0;
2455 w->wd = inotify_add_watch (fs_fd, path, mask); 3742 w->wd = inotify_add_watch (fs_fd, path, mask);
2456 } 3743 }
2457 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3744 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2458 } 3745 }
2459 } 3746 }
2460 else
2461 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2462 3747
2463 if (w->wd >= 0) 3748 if (w->wd >= 0)
2464 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);
2465} 3755}
2466 3756
2467static void noinline 3757static void noinline
2468infy_del (EV_P_ ev_stat *w) 3758infy_del (EV_P_ ev_stat *w)
2469{ 3759{
… …
2472 3762
2473 if (wd < 0) 3763 if (wd < 0)
2474 return; 3764 return;
2475 3765
2476 w->wd = -2; 3766 w->wd = -2;
2477 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3767 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2478 wlist_del (&fs_hash [slot].head, (WL)w); 3768 wlist_del (&fs_hash [slot].head, (WL)w);
2479 3769
2480 /* remove this watcher, if others are watching it, they will rearm */ 3770 /* remove this watcher, if others are watching it, they will rearm */
2481 inotify_rm_watch (fs_fd, wd); 3771 inotify_rm_watch (fs_fd, wd);
2482} 3772}
… …
2484static void noinline 3774static void noinline
2485infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3775infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2486{ 3776{
2487 if (slot < 0) 3777 if (slot < 0)
2488 /* overflow, need to check for all hash slots */ 3778 /* overflow, need to check for all hash slots */
2489 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3779 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2490 infy_wd (EV_A_ slot, wd, ev); 3780 infy_wd (EV_A_ slot, wd, ev);
2491 else 3781 else
2492 { 3782 {
2493 WL w_; 3783 WL w_;
2494 3784
2495 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3785 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2496 { 3786 {
2497 ev_stat *w = (ev_stat *)w_; 3787 ev_stat *w = (ev_stat *)w_;
2498 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 */
2499 3789
2500 if (w->wd == wd || wd == -1) 3790 if (w->wd == wd || wd == -1)
2501 { 3791 {
2502 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3792 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2503 { 3793 {
3794 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2504 w->wd = -1; 3795 w->wd = -1;
2505 infy_add (EV_A_ w); /* re-add, no matter what */ 3796 infy_add (EV_A_ w); /* re-add, no matter what */
2506 } 3797 }
2507 3798
2508 stat_timer_cb (EV_A_ &w->timer, 0); 3799 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2513 3804
2514static void 3805static void
2515infy_cb (EV_P_ ev_io *w, int revents) 3806infy_cb (EV_P_ ev_io *w, int revents)
2516{ 3807{
2517 char buf [EV_INOTIFY_BUFSIZE]; 3808 char buf [EV_INOTIFY_BUFSIZE];
2518 struct inotify_event *ev = (struct inotify_event *)buf;
2519 int ofs; 3809 int ofs;
2520 int len = read (fs_fd, buf, sizeof (buf)); 3810 int len = read (fs_fd, buf, sizeof (buf));
2521 3811
2522 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);
2523 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 }
2524} 3818}
2525 3819
2526void inline_size 3820inline_size void ecb_cold
2527infy_init (EV_P) 3821ev_check_2625 (EV_P)
2528{ 3822{
2529 if (fs_fd != -2)
2530 return;
2531
2532 /* kernels < 2.6.25 are borked 3823 /* kernels < 2.6.25 are borked
2533 * 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
2534 */ 3825 */
2535 { 3826 if (ev_linux_version () < 0x020619)
2536 struct utsname buf; 3827 return;
2537 int major, minor, micro;
2538 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
2539 fs_fd = -1; 3849 fs_fd = -1;
2540 3850
2541 if (uname (&buf)) 3851 ev_check_2625 (EV_A);
2542 return;
2543 3852
2544 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2545 return;
2546
2547 if (major < 2
2548 || (major == 2 && minor < 6)
2549 || (major == 2 && minor == 6 && micro < 25))
2550 return;
2551 }
2552
2553 fs_fd = inotify_init (); 3853 fs_fd = infy_newfd ();
2554 3854
2555 if (fs_fd >= 0) 3855 if (fs_fd >= 0)
2556 { 3856 {
3857 fd_intern (fs_fd);
2557 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3858 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2558 ev_set_priority (&fs_w, EV_MAXPRI); 3859 ev_set_priority (&fs_w, EV_MAXPRI);
2559 ev_io_start (EV_A_ &fs_w); 3860 ev_io_start (EV_A_ &fs_w);
3861 ev_unref (EV_A);
2560 } 3862 }
2561} 3863}
2562 3864
2563void inline_size 3865inline_size void
2564infy_fork (EV_P) 3866infy_fork (EV_P)
2565{ 3867{
2566 int slot; 3868 int slot;
2567 3869
2568 if (fs_fd < 0) 3870 if (fs_fd < 0)
2569 return; 3871 return;
2570 3872
3873 ev_ref (EV_A);
3874 ev_io_stop (EV_A_ &fs_w);
2571 close (fs_fd); 3875 close (fs_fd);
2572 fs_fd = inotify_init (); 3876 fs_fd = infy_newfd ();
2573 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
2574 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3886 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2575 { 3887 {
2576 WL w_ = fs_hash [slot].head; 3888 WL w_ = fs_hash [slot].head;
2577 fs_hash [slot].head = 0; 3889 fs_hash [slot].head = 0;
2578 3890
2579 while (w_) 3891 while (w_)
… …
2584 w->wd = -1; 3896 w->wd = -1;
2585 3897
2586 if (fs_fd >= 0) 3898 if (fs_fd >= 0)
2587 infy_add (EV_A_ w); /* re-add, no matter what */ 3899 infy_add (EV_A_ w); /* re-add, no matter what */
2588 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);
2589 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 }
2590 } 3907 }
2591 } 3908 }
2592} 3909}
2593 3910
2594#endif 3911#endif
… …
2598#else 3915#else
2599# define EV_LSTAT(p,b) lstat (p, b) 3916# define EV_LSTAT(p,b) lstat (p, b)
2600#endif 3917#endif
2601 3918
2602void 3919void
2603ev_stat_stat (EV_P_ ev_stat *w) 3920ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2604{ 3921{
2605 if (lstat (w->path, &w->attr) < 0) 3922 if (lstat (w->path, &w->attr) < 0)
2606 w->attr.st_nlink = 0; 3923 w->attr.st_nlink = 0;
2607 else if (!w->attr.st_nlink) 3924 else if (!w->attr.st_nlink)
2608 w->attr.st_nlink = 1; 3925 w->attr.st_nlink = 1;
… …
2611static void noinline 3928static void noinline
2612stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3929stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2613{ 3930{
2614 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3931 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2615 3932
2616 /* we copy this here each the time so that */ 3933 ev_statdata prev = w->attr;
2617 /* prev has the old value when the callback gets invoked */
2618 w->prev = w->attr;
2619 ev_stat_stat (EV_A_ w); 3934 ev_stat_stat (EV_A_ w);
2620 3935
2621 /* 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 */
2622 if ( 3937 if (
2623 w->prev.st_dev != w->attr.st_dev 3938 prev.st_dev != w->attr.st_dev
2624 || w->prev.st_ino != w->attr.st_ino 3939 || prev.st_ino != w->attr.st_ino
2625 || w->prev.st_mode != w->attr.st_mode 3940 || prev.st_mode != w->attr.st_mode
2626 || w->prev.st_nlink != w->attr.st_nlink 3941 || prev.st_nlink != w->attr.st_nlink
2627 || w->prev.st_uid != w->attr.st_uid 3942 || prev.st_uid != w->attr.st_uid
2628 || w->prev.st_gid != w->attr.st_gid 3943 || prev.st_gid != w->attr.st_gid
2629 || w->prev.st_rdev != w->attr.st_rdev 3944 || prev.st_rdev != w->attr.st_rdev
2630 || w->prev.st_size != w->attr.st_size 3945 || prev.st_size != w->attr.st_size
2631 || w->prev.st_atime != w->attr.st_atime 3946 || prev.st_atime != w->attr.st_atime
2632 || w->prev.st_mtime != w->attr.st_mtime 3947 || prev.st_mtime != w->attr.st_mtime
2633 || w->prev.st_ctime != w->attr.st_ctime 3948 || prev.st_ctime != w->attr.st_ctime
2634 ) { 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
2635 #if EV_USE_INOTIFY 3955 #if EV_USE_INOTIFY
2636 if (fs_fd >= 0) 3956 if (fs_fd >= 0)
2637 { 3957 {
2638 infy_del (EV_A_ w); 3958 infy_del (EV_A_ w);
2639 infy_add (EV_A_ w); 3959 infy_add (EV_A_ w);
… …
2644 ev_feed_event (EV_A_ w, EV_STAT); 3964 ev_feed_event (EV_A_ w, EV_STAT);
2645 } 3965 }
2646} 3966}
2647 3967
2648void 3968void
2649ev_stat_start (EV_P_ ev_stat *w) 3969ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2650{ 3970{
2651 if (expect_false (ev_is_active (w))) 3971 if (expect_false (ev_is_active (w)))
2652 return; 3972 return;
2653 3973
2654 /* since we use memcmp, we need to clear any padding data etc. */
2655 memset (&w->prev, 0, sizeof (ev_statdata));
2656 memset (&w->attr, 0, sizeof (ev_statdata));
2657
2658 ev_stat_stat (EV_A_ w); 3974 ev_stat_stat (EV_A_ w);
2659 3975
3976 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2660 if (w->interval < MIN_STAT_INTERVAL) 3977 w->interval = MIN_STAT_INTERVAL;
2661 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2662 3978
2663 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);
2664 ev_set_priority (&w->timer, ev_priority (w)); 3980 ev_set_priority (&w->timer, ev_priority (w));
2665 3981
2666#if EV_USE_INOTIFY 3982#if EV_USE_INOTIFY
2667 infy_init (EV_A); 3983 infy_init (EV_A);
2668 3984
2669 if (fs_fd >= 0) 3985 if (fs_fd >= 0)
2670 infy_add (EV_A_ w); 3986 infy_add (EV_A_ w);
2671 else 3987 else
2672#endif 3988#endif
3989 {
2673 ev_timer_start (EV_A_ &w->timer); 3990 ev_timer_again (EV_A_ &w->timer);
3991 ev_unref (EV_A);
3992 }
2674 3993
2675 ev_start (EV_A_ (W)w, 1); 3994 ev_start (EV_A_ (W)w, 1);
2676 3995
2677 EV_FREQUENT_CHECK; 3996 EV_FREQUENT_CHECK;
2678} 3997}
2679 3998
2680void 3999void
2681ev_stat_stop (EV_P_ ev_stat *w) 4000ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2682{ 4001{
2683 clear_pending (EV_A_ (W)w); 4002 clear_pending (EV_A_ (W)w);
2684 if (expect_false (!ev_is_active (w))) 4003 if (expect_false (!ev_is_active (w)))
2685 return; 4004 return;
2686 4005
2687 EV_FREQUENT_CHECK; 4006 EV_FREQUENT_CHECK;
2688 4007
2689#if EV_USE_INOTIFY 4008#if EV_USE_INOTIFY
2690 infy_del (EV_A_ w); 4009 infy_del (EV_A_ w);
2691#endif 4010#endif
4011
4012 if (ev_is_active (&w->timer))
4013 {
4014 ev_ref (EV_A);
2692 ev_timer_stop (EV_A_ &w->timer); 4015 ev_timer_stop (EV_A_ &w->timer);
4016 }
2693 4017
2694 ev_stop (EV_A_ (W)w); 4018 ev_stop (EV_A_ (W)w);
2695 4019
2696 EV_FREQUENT_CHECK; 4020 EV_FREQUENT_CHECK;
2697} 4021}
2698#endif 4022#endif
2699 4023
2700#if EV_IDLE_ENABLE 4024#if EV_IDLE_ENABLE
2701void 4025void
2702ev_idle_start (EV_P_ ev_idle *w) 4026ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2703{ 4027{
2704 if (expect_false (ev_is_active (w))) 4028 if (expect_false (ev_is_active (w)))
2705 return; 4029 return;
2706 4030
2707 pri_adjust (EV_A_ (W)w); 4031 pri_adjust (EV_A_ (W)w);
… …
2720 4044
2721 EV_FREQUENT_CHECK; 4045 EV_FREQUENT_CHECK;
2722} 4046}
2723 4047
2724void 4048void
2725ev_idle_stop (EV_P_ ev_idle *w) 4049ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2726{ 4050{
2727 clear_pending (EV_A_ (W)w); 4051 clear_pending (EV_A_ (W)w);
2728 if (expect_false (!ev_is_active (w))) 4052 if (expect_false (!ev_is_active (w)))
2729 return; 4053 return;
2730 4054
… …
2742 4066
2743 EV_FREQUENT_CHECK; 4067 EV_FREQUENT_CHECK;
2744} 4068}
2745#endif 4069#endif
2746 4070
4071#if EV_PREPARE_ENABLE
2747void 4072void
2748ev_prepare_start (EV_P_ ev_prepare *w) 4073ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2749{ 4074{
2750 if (expect_false (ev_is_active (w))) 4075 if (expect_false (ev_is_active (w)))
2751 return; 4076 return;
2752 4077
2753 EV_FREQUENT_CHECK; 4078 EV_FREQUENT_CHECK;
… …
2758 4083
2759 EV_FREQUENT_CHECK; 4084 EV_FREQUENT_CHECK;
2760} 4085}
2761 4086
2762void 4087void
2763ev_prepare_stop (EV_P_ ev_prepare *w) 4088ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2764{ 4089{
2765 clear_pending (EV_A_ (W)w); 4090 clear_pending (EV_A_ (W)w);
2766 if (expect_false (!ev_is_active (w))) 4091 if (expect_false (!ev_is_active (w)))
2767 return; 4092 return;
2768 4093
… …
2777 4102
2778 ev_stop (EV_A_ (W)w); 4103 ev_stop (EV_A_ (W)w);
2779 4104
2780 EV_FREQUENT_CHECK; 4105 EV_FREQUENT_CHECK;
2781} 4106}
4107#endif
2782 4108
4109#if EV_CHECK_ENABLE
2783void 4110void
2784ev_check_start (EV_P_ ev_check *w) 4111ev_check_start (EV_P_ ev_check *w) EV_THROW
2785{ 4112{
2786 if (expect_false (ev_is_active (w))) 4113 if (expect_false (ev_is_active (w)))
2787 return; 4114 return;
2788 4115
2789 EV_FREQUENT_CHECK; 4116 EV_FREQUENT_CHECK;
… …
2794 4121
2795 EV_FREQUENT_CHECK; 4122 EV_FREQUENT_CHECK;
2796} 4123}
2797 4124
2798void 4125void
2799ev_check_stop (EV_P_ ev_check *w) 4126ev_check_stop (EV_P_ ev_check *w) EV_THROW
2800{ 4127{
2801 clear_pending (EV_A_ (W)w); 4128 clear_pending (EV_A_ (W)w);
2802 if (expect_false (!ev_is_active (w))) 4129 if (expect_false (!ev_is_active (w)))
2803 return; 4130 return;
2804 4131
… …
2813 4140
2814 ev_stop (EV_A_ (W)w); 4141 ev_stop (EV_A_ (W)w);
2815 4142
2816 EV_FREQUENT_CHECK; 4143 EV_FREQUENT_CHECK;
2817} 4144}
4145#endif
2818 4146
2819#if EV_EMBED_ENABLE 4147#if EV_EMBED_ENABLE
2820void noinline 4148void noinline
2821ev_embed_sweep (EV_P_ ev_embed *w) 4149ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2822{ 4150{
2823 ev_loop (w->other, EVLOOP_NONBLOCK); 4151 ev_run (w->other, EVRUN_NOWAIT);
2824} 4152}
2825 4153
2826static void 4154static void
2827embed_io_cb (EV_P_ ev_io *io, int revents) 4155embed_io_cb (EV_P_ ev_io *io, int revents)
2828{ 4156{
2829 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4157 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2830 4158
2831 if (ev_cb (w)) 4159 if (ev_cb (w))
2832 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4160 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2833 else 4161 else
2834 ev_loop (w->other, EVLOOP_NONBLOCK); 4162 ev_run (w->other, EVRUN_NOWAIT);
2835} 4163}
2836 4164
2837static void 4165static void
2838embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4166embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2839{ 4167{
2840 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4168 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2841 4169
2842 { 4170 {
2843 struct ev_loop *loop = w->other; 4171 EV_P = w->other;
2844 4172
2845 while (fdchangecnt) 4173 while (fdchangecnt)
2846 { 4174 {
2847 fd_reify (EV_A); 4175 fd_reify (EV_A);
2848 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4176 ev_run (EV_A_ EVRUN_NOWAIT);
2849 } 4177 }
2850 } 4178 }
2851} 4179}
2852 4180
2853static void 4181static void
2854embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 4182embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2855{ 4183{
2856 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));
2857 4185
4186 ev_embed_stop (EV_A_ w);
4187
2858 { 4188 {
2859 struct ev_loop *loop = w->other; 4189 EV_P = w->other;
2860 4190
2861 ev_loop_fork (EV_A); 4191 ev_loop_fork (EV_A);
4192 ev_run (EV_A_ EVRUN_NOWAIT);
2862 } 4193 }
4194
4195 ev_embed_start (EV_A_ w);
2863} 4196}
2864 4197
2865#if 0 4198#if 0
2866static void 4199static void
2867embed_idle_cb (EV_P_ ev_idle *idle, int revents) 4200embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2869 ev_idle_stop (EV_A_ idle); 4202 ev_idle_stop (EV_A_ idle);
2870} 4203}
2871#endif 4204#endif
2872 4205
2873void 4206void
2874ev_embed_start (EV_P_ ev_embed *w) 4207ev_embed_start (EV_P_ ev_embed *w) EV_THROW
2875{ 4208{
2876 if (expect_false (ev_is_active (w))) 4209 if (expect_false (ev_is_active (w)))
2877 return; 4210 return;
2878 4211
2879 { 4212 {
2880 struct ev_loop *loop = w->other; 4213 EV_P = w->other;
2881 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 ()));
2882 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);
2883 } 4216 }
2884 4217
2885 EV_FREQUENT_CHECK; 4218 EV_FREQUENT_CHECK;
2886 4219
… …
2900 4233
2901 EV_FREQUENT_CHECK; 4234 EV_FREQUENT_CHECK;
2902} 4235}
2903 4236
2904void 4237void
2905ev_embed_stop (EV_P_ ev_embed *w) 4238ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
2906{ 4239{
2907 clear_pending (EV_A_ (W)w); 4240 clear_pending (EV_A_ (W)w);
2908 if (expect_false (!ev_is_active (w))) 4241 if (expect_false (!ev_is_active (w)))
2909 return; 4242 return;
2910 4243
… …
2912 4245
2913 ev_io_stop (EV_A_ &w->io); 4246 ev_io_stop (EV_A_ &w->io);
2914 ev_prepare_stop (EV_A_ &w->prepare); 4247 ev_prepare_stop (EV_A_ &w->prepare);
2915 ev_fork_stop (EV_A_ &w->fork); 4248 ev_fork_stop (EV_A_ &w->fork);
2916 4249
4250 ev_stop (EV_A_ (W)w);
4251
2917 EV_FREQUENT_CHECK; 4252 EV_FREQUENT_CHECK;
2918} 4253}
2919#endif 4254#endif
2920 4255
2921#if EV_FORK_ENABLE 4256#if EV_FORK_ENABLE
2922void 4257void
2923ev_fork_start (EV_P_ ev_fork *w) 4258ev_fork_start (EV_P_ ev_fork *w) EV_THROW
2924{ 4259{
2925 if (expect_false (ev_is_active (w))) 4260 if (expect_false (ev_is_active (w)))
2926 return; 4261 return;
2927 4262
2928 EV_FREQUENT_CHECK; 4263 EV_FREQUENT_CHECK;
… …
2933 4268
2934 EV_FREQUENT_CHECK; 4269 EV_FREQUENT_CHECK;
2935} 4270}
2936 4271
2937void 4272void
2938ev_fork_stop (EV_P_ ev_fork *w) 4273ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
2939{ 4274{
2940 clear_pending (EV_A_ (W)w); 4275 clear_pending (EV_A_ (W)w);
2941 if (expect_false (!ev_is_active (w))) 4276 if (expect_false (!ev_is_active (w)))
2942 return; 4277 return;
2943 4278
… …
2954 4289
2955 EV_FREQUENT_CHECK; 4290 EV_FREQUENT_CHECK;
2956} 4291}
2957#endif 4292#endif
2958 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
2959#if EV_ASYNC_ENABLE 4335#if EV_ASYNC_ENABLE
2960void 4336void
2961ev_async_start (EV_P_ ev_async *w) 4337ev_async_start (EV_P_ ev_async *w) EV_THROW
2962{ 4338{
2963 if (expect_false (ev_is_active (w))) 4339 if (expect_false (ev_is_active (w)))
2964 return; 4340 return;
4341
4342 w->sent = 0;
2965 4343
2966 evpipe_init (EV_A); 4344 evpipe_init (EV_A);
2967 4345
2968 EV_FREQUENT_CHECK; 4346 EV_FREQUENT_CHECK;
2969 4347
… …
2973 4351
2974 EV_FREQUENT_CHECK; 4352 EV_FREQUENT_CHECK;
2975} 4353}
2976 4354
2977void 4355void
2978ev_async_stop (EV_P_ ev_async *w) 4356ev_async_stop (EV_P_ ev_async *w) EV_THROW
2979{ 4357{
2980 clear_pending (EV_A_ (W)w); 4358 clear_pending (EV_A_ (W)w);
2981 if (expect_false (!ev_is_active (w))) 4359 if (expect_false (!ev_is_active (w)))
2982 return; 4360 return;
2983 4361
… …
2994 4372
2995 EV_FREQUENT_CHECK; 4373 EV_FREQUENT_CHECK;
2996} 4374}
2997 4375
2998void 4376void
2999ev_async_send (EV_P_ ev_async *w) 4377ev_async_send (EV_P_ ev_async *w) EV_THROW
3000{ 4378{
3001 w->sent = 1; 4379 w->sent = 1;
3002 evpipe_write (EV_A_ &gotasync); 4380 evpipe_write (EV_A_ &async_pending);
3003} 4381}
3004#endif 4382#endif
3005 4383
3006/*****************************************************************************/ 4384/*****************************************************************************/
3007 4385
… …
3041 4419
3042 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));
3043} 4421}
3044 4422
3045void 4423void
3046ev_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
3047{ 4425{
3048 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));
3049 4427
3050 if (expect_false (!once)) 4428 if (expect_false (!once))
3051 { 4429 {
3052 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4430 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3053 return; 4431 return;
3054 } 4432 }
3055 4433
3056 once->cb = cb; 4434 once->cb = cb;
3057 once->arg = arg; 4435 once->arg = arg;
… …
3069 ev_timer_set (&once->to, timeout, 0.); 4447 ev_timer_set (&once->to, timeout, 0.);
3070 ev_timer_start (EV_A_ &once->to); 4448 ev_timer_start (EV_A_ &once->to);
3071 } 4449 }
3072} 4450}
3073 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
3074#if EV_MULTIPLICITY 4568#if EV_MULTIPLICITY
3075 #include "ev_wrap.h" 4569 #include "ev_wrap.h"
3076#endif 4570#endif
3077 4571
3078#ifdef __cplusplus
3079}
3080#endif
3081

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