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Comparing libev/ev.c (file contents):
Revision 1.264 by root, Mon Oct 13 23:20:12 2008 UTC vs.
Revision 1.448 by root, Tue Jul 24 16:28:08 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
393syserr (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{
410 /* some systems, notably openbsd and darwin, fail to properly 1196 /* some systems, notably openbsd and darwin, fail to properly
411 * implement realloc (x, 0) (as required by both ansi c-98 and 1197 * implement realloc (x, 0) (as required by both ansi c-89 and
412 * the single unix specification, so work around them here. 1198 * the single unix specification, so work around them here.
1199 * recently, also (at least) fedora and debian started breaking it,
1200 * despite documenting it otherwise.
413 */ 1201 */
414 1202
415 if (size) 1203 if (size)
416 return realloc (ptr, size); 1204 return realloc (ptr, size);
417 1205
418 free (ptr); 1206 free (ptr);
419 return 0; 1207 return 0;
420} 1208}
421 1209
422static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1210static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
423 1211
424void 1212void ecb_cold
425ev_set_allocator (void *(*cb)(void *ptr, long size)) 1213ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
426{ 1214{
427 alloc = cb; 1215 alloc = cb;
428} 1216}
429 1217
430inline_speed void * 1218inline_speed void *
… …
432{ 1220{
433 ptr = alloc (ptr, size); 1221 ptr = alloc (ptr, size);
434 1222
435 if (!ptr && size) 1223 if (!ptr && size)
436 { 1224 {
1225#if EV_AVOID_STDIO
1226 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1227#else
437 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1228 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1229#endif
438 abort (); 1230 abort ();
439 } 1231 }
440 1232
441 return ptr; 1233 return ptr;
442} 1234}
… …
444#define ev_malloc(size) ev_realloc (0, (size)) 1236#define ev_malloc(size) ev_realloc (0, (size))
445#define ev_free(ptr) ev_realloc ((ptr), 0) 1237#define ev_free(ptr) ev_realloc ((ptr), 0)
446 1238
447/*****************************************************************************/ 1239/*****************************************************************************/
448 1240
1241/* set in reify when reification needed */
1242#define EV_ANFD_REIFY 1
1243
1244/* file descriptor info structure */
449typedef struct 1245typedef struct
450{ 1246{
451 WL head; 1247 WL head;
452 unsigned char events; 1248 unsigned char events; /* the events watched for */
1249 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1250 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
453 unsigned char reify; 1251 unsigned char unused;
1252#if EV_USE_EPOLL
1253 unsigned int egen; /* generation counter to counter epoll bugs */
1254#endif
454#if EV_SELECT_IS_WINSOCKET 1255#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
455 SOCKET handle; 1256 SOCKET handle;
456#endif 1257#endif
1258#if EV_USE_IOCP
1259 OVERLAPPED or, ow;
1260#endif
457} ANFD; 1261} ANFD;
458 1262
1263/* stores the pending event set for a given watcher */
459typedef struct 1264typedef struct
460{ 1265{
461 W w; 1266 W w;
462 int events; 1267 int events; /* the pending event set for the given watcher */
463} ANPENDING; 1268} ANPENDING;
464 1269
465#if EV_USE_INOTIFY 1270#if EV_USE_INOTIFY
466/* hash table entry per inotify-id */ 1271/* hash table entry per inotify-id */
467typedef struct 1272typedef struct
… …
470} ANFS; 1275} ANFS;
471#endif 1276#endif
472 1277
473/* Heap Entry */ 1278/* Heap Entry */
474#if EV_HEAP_CACHE_AT 1279#if EV_HEAP_CACHE_AT
1280 /* a heap element */
475 typedef struct { 1281 typedef struct {
476 ev_tstamp at; 1282 ev_tstamp at;
477 WT w; 1283 WT w;
478 } ANHE; 1284 } ANHE;
479 1285
480 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1286 #define ANHE_w(he) (he).w /* access watcher, read-write */
481 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1287 #define ANHE_at(he) (he).at /* access cached at, read-only */
482 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 1288 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
483#else 1289#else
1290 /* a heap element */
484 typedef WT ANHE; 1291 typedef WT ANHE;
485 1292
486 #define ANHE_w(he) (he) 1293 #define ANHE_w(he) (he)
487 #define ANHE_at(he) (he)->at 1294 #define ANHE_at(he) (he)->at
488 #define ANHE_at_cache(he) 1295 #define ANHE_at_cache(he)
… …
499 #undef VAR 1306 #undef VAR
500 }; 1307 };
501 #include "ev_wrap.h" 1308 #include "ev_wrap.h"
502 1309
503 static struct ev_loop default_loop_struct; 1310 static struct ev_loop default_loop_struct;
504 struct ev_loop *ev_default_loop_ptr; 1311 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
505 1312
506#else 1313#else
507 1314
508 ev_tstamp ev_rt_now; 1315 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
509 #define VAR(name,decl) static decl; 1316 #define VAR(name,decl) static decl;
510 #include "ev_vars.h" 1317 #include "ev_vars.h"
511 #undef VAR 1318 #undef VAR
512 1319
513 static int ev_default_loop_ptr; 1320 static int ev_default_loop_ptr;
514 1321
515#endif 1322#endif
516 1323
1324#if EV_FEATURE_API
1325# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1326# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1327# define EV_INVOKE_PENDING invoke_cb (EV_A)
1328#else
1329# define EV_RELEASE_CB (void)0
1330# define EV_ACQUIRE_CB (void)0
1331# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1332#endif
1333
1334#define EVBREAK_RECURSE 0x80
1335
517/*****************************************************************************/ 1336/*****************************************************************************/
518 1337
1338#ifndef EV_HAVE_EV_TIME
519ev_tstamp 1339ev_tstamp
520ev_time (void) 1340ev_time (void) EV_THROW
521{ 1341{
522#if EV_USE_REALTIME 1342#if EV_USE_REALTIME
1343 if (expect_true (have_realtime))
1344 {
523 struct timespec ts; 1345 struct timespec ts;
524 clock_gettime (CLOCK_REALTIME, &ts); 1346 clock_gettime (CLOCK_REALTIME, &ts);
525 return ts.tv_sec + ts.tv_nsec * 1e-9; 1347 return ts.tv_sec + ts.tv_nsec * 1e-9;
526#else 1348 }
1349#endif
1350
527 struct timeval tv; 1351 struct timeval tv;
528 gettimeofday (&tv, 0); 1352 gettimeofday (&tv, 0);
529 return tv.tv_sec + tv.tv_usec * 1e-6; 1353 return tv.tv_sec + tv.tv_usec * 1e-6;
530#endif
531} 1354}
1355#endif
532 1356
533ev_tstamp inline_size 1357inline_size ev_tstamp
534get_clock (void) 1358get_clock (void)
535{ 1359{
536#if EV_USE_MONOTONIC 1360#if EV_USE_MONOTONIC
537 if (expect_true (have_monotonic)) 1361 if (expect_true (have_monotonic))
538 { 1362 {
… …
545 return ev_time (); 1369 return ev_time ();
546} 1370}
547 1371
548#if EV_MULTIPLICITY 1372#if EV_MULTIPLICITY
549ev_tstamp 1373ev_tstamp
550ev_now (EV_P) 1374ev_now (EV_P) EV_THROW
551{ 1375{
552 return ev_rt_now; 1376 return ev_rt_now;
553} 1377}
554#endif 1378#endif
555 1379
556void 1380void
557ev_sleep (ev_tstamp delay) 1381ev_sleep (ev_tstamp delay) EV_THROW
558{ 1382{
559 if (delay > 0.) 1383 if (delay > 0.)
560 { 1384 {
561#if EV_USE_NANOSLEEP 1385#if EV_USE_NANOSLEEP
562 struct timespec ts; 1386 struct timespec ts;
563 1387
564 ts.tv_sec = (time_t)delay; 1388 EV_TS_SET (ts, delay);
565 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
566
567 nanosleep (&ts, 0); 1389 nanosleep (&ts, 0);
568#elif defined(_WIN32) 1390#elif defined _WIN32
569 Sleep ((unsigned long)(delay * 1e3)); 1391 Sleep ((unsigned long)(delay * 1e3));
570#else 1392#else
571 struct timeval tv; 1393 struct timeval tv;
572 1394
573 tv.tv_sec = (time_t)delay;
574 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
575
576 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1395 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
577 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1396 /* something not guaranteed by newer posix versions, but guaranteed */
578 /* by older ones */ 1397 /* by older ones */
1398 EV_TV_SET (tv, delay);
579 select (0, 0, 0, 0, &tv); 1399 select (0, 0, 0, 0, &tv);
580#endif 1400#endif
581 } 1401 }
582} 1402}
583 1403
584/*****************************************************************************/ 1404/*****************************************************************************/
585 1405
586#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1406#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
587 1407
588int inline_size 1408/* find a suitable new size for the given array, */
1409/* hopefully by rounding to a nice-to-malloc size */
1410inline_size int
589array_nextsize (int elem, int cur, int cnt) 1411array_nextsize (int elem, int cur, int cnt)
590{ 1412{
591 int ncur = cur + 1; 1413 int ncur = cur + 1;
592 1414
593 do 1415 do
594 ncur <<= 1; 1416 ncur <<= 1;
595 while (cnt > ncur); 1417 while (cnt > ncur);
596 1418
597 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1419 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
598 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1420 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
599 { 1421 {
600 ncur *= elem; 1422 ncur *= elem;
601 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1423 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
602 ncur = ncur - sizeof (void *) * 4; 1424 ncur = ncur - sizeof (void *) * 4;
… …
604 } 1426 }
605 1427
606 return ncur; 1428 return ncur;
607} 1429}
608 1430
609static noinline void * 1431static void * noinline ecb_cold
610array_realloc (int elem, void *base, int *cur, int cnt) 1432array_realloc (int elem, void *base, int *cur, int cnt)
611{ 1433{
612 *cur = array_nextsize (elem, *cur, cnt); 1434 *cur = array_nextsize (elem, *cur, cnt);
613 return ev_realloc (base, elem * *cur); 1435 return ev_realloc (base, elem * *cur);
614} 1436}
1437
1438#define array_init_zero(base,count) \
1439 memset ((void *)(base), 0, sizeof (*(base)) * (count))
615 1440
616#define array_needsize(type,base,cur,cnt,init) \ 1441#define array_needsize(type,base,cur,cnt,init) \
617 if (expect_false ((cnt) > (cur))) \ 1442 if (expect_false ((cnt) > (cur))) \
618 { \ 1443 { \
619 int ocur_ = (cur); \ 1444 int ecb_unused ocur_ = (cur); \
620 (base) = (type *)array_realloc \ 1445 (base) = (type *)array_realloc \
621 (sizeof (type), (base), &(cur), (cnt)); \ 1446 (sizeof (type), (base), &(cur), (cnt)); \
622 init ((base) + (ocur_), (cur) - ocur_); \ 1447 init ((base) + (ocur_), (cur) - ocur_); \
623 } 1448 }
624 1449
… …
631 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1456 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
632 } 1457 }
633#endif 1458#endif
634 1459
635#define array_free(stem, idx) \ 1460#define array_free(stem, idx) \
636 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1461 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
637 1462
638/*****************************************************************************/ 1463/*****************************************************************************/
639 1464
1465/* dummy callback for pending events */
1466static void noinline
1467pendingcb (EV_P_ ev_prepare *w, int revents)
1468{
1469}
1470
640void noinline 1471void noinline
641ev_feed_event (EV_P_ void *w, int revents) 1472ev_feed_event (EV_P_ void *w, int revents) EV_THROW
642{ 1473{
643 W w_ = (W)w; 1474 W w_ = (W)w;
644 int pri = ABSPRI (w_); 1475 int pri = ABSPRI (w_);
645 1476
646 if (expect_false (w_->pending)) 1477 if (expect_false (w_->pending))
… …
650 w_->pending = ++pendingcnt [pri]; 1481 w_->pending = ++pendingcnt [pri];
651 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1482 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
652 pendings [pri][w_->pending - 1].w = w_; 1483 pendings [pri][w_->pending - 1].w = w_;
653 pendings [pri][w_->pending - 1].events = revents; 1484 pendings [pri][w_->pending - 1].events = revents;
654 } 1485 }
655}
656 1486
657void inline_speed 1487 pendingpri = NUMPRI - 1;
1488}
1489
1490inline_speed void
1491feed_reverse (EV_P_ W w)
1492{
1493 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1494 rfeeds [rfeedcnt++] = w;
1495}
1496
1497inline_size void
1498feed_reverse_done (EV_P_ int revents)
1499{
1500 do
1501 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1502 while (rfeedcnt);
1503}
1504
1505inline_speed void
658queue_events (EV_P_ W *events, int eventcnt, int type) 1506queue_events (EV_P_ W *events, int eventcnt, int type)
659{ 1507{
660 int i; 1508 int i;
661 1509
662 for (i = 0; i < eventcnt; ++i) 1510 for (i = 0; i < eventcnt; ++i)
663 ev_feed_event (EV_A_ events [i], type); 1511 ev_feed_event (EV_A_ events [i], type);
664} 1512}
665 1513
666/*****************************************************************************/ 1514/*****************************************************************************/
667 1515
668void inline_size 1516inline_speed void
669anfds_init (ANFD *base, int count)
670{
671 while (count--)
672 {
673 base->head = 0;
674 base->events = EV_NONE;
675 base->reify = 0;
676
677 ++base;
678 }
679}
680
681void inline_speed
682fd_event (EV_P_ int fd, int revents) 1517fd_event_nocheck (EV_P_ int fd, int revents)
683{ 1518{
684 ANFD *anfd = anfds + fd; 1519 ANFD *anfd = anfds + fd;
685 ev_io *w; 1520 ev_io *w;
686 1521
687 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1522 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
691 if (ev) 1526 if (ev)
692 ev_feed_event (EV_A_ (W)w, ev); 1527 ev_feed_event (EV_A_ (W)w, ev);
693 } 1528 }
694} 1529}
695 1530
1531/* do not submit kernel events for fds that have reify set */
1532/* because that means they changed while we were polling for new events */
1533inline_speed void
1534fd_event (EV_P_ int fd, int revents)
1535{
1536 ANFD *anfd = anfds + fd;
1537
1538 if (expect_true (!anfd->reify))
1539 fd_event_nocheck (EV_A_ fd, revents);
1540}
1541
696void 1542void
697ev_feed_fd_event (EV_P_ int fd, int revents) 1543ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
698{ 1544{
699 if (fd >= 0 && fd < anfdmax) 1545 if (fd >= 0 && fd < anfdmax)
700 fd_event (EV_A_ fd, revents); 1546 fd_event_nocheck (EV_A_ fd, revents);
701} 1547}
702 1548
703void inline_size 1549/* make sure the external fd watch events are in-sync */
1550/* with the kernel/libev internal state */
1551inline_size void
704fd_reify (EV_P) 1552fd_reify (EV_P)
705{ 1553{
706 int i; 1554 int i;
1555
1556#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1557 for (i = 0; i < fdchangecnt; ++i)
1558 {
1559 int fd = fdchanges [i];
1560 ANFD *anfd = anfds + fd;
1561
1562 if (anfd->reify & EV__IOFDSET && anfd->head)
1563 {
1564 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1565
1566 if (handle != anfd->handle)
1567 {
1568 unsigned long arg;
1569
1570 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1571
1572 /* handle changed, but fd didn't - we need to do it in two steps */
1573 backend_modify (EV_A_ fd, anfd->events, 0);
1574 anfd->events = 0;
1575 anfd->handle = handle;
1576 }
1577 }
1578 }
1579#endif
707 1580
708 for (i = 0; i < fdchangecnt; ++i) 1581 for (i = 0; i < fdchangecnt; ++i)
709 { 1582 {
710 int fd = fdchanges [i]; 1583 int fd = fdchanges [i];
711 ANFD *anfd = anfds + fd; 1584 ANFD *anfd = anfds + fd;
712 ev_io *w; 1585 ev_io *w;
713 1586
714 unsigned char events = 0; 1587 unsigned char o_events = anfd->events;
1588 unsigned char o_reify = anfd->reify;
715 1589
716 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1590 anfd->reify = 0;
717 events |= (unsigned char)w->events;
718 1591
719#if EV_SELECT_IS_WINSOCKET 1592 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
720 if (events)
721 { 1593 {
722 unsigned long arg; 1594 anfd->events = 0;
723 #ifdef EV_FD_TO_WIN32_HANDLE 1595
724 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1596 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
725 #else 1597 anfd->events |= (unsigned char)w->events;
726 anfd->handle = _get_osfhandle (fd); 1598
727 #endif 1599 if (o_events != anfd->events)
728 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1600 o_reify = EV__IOFDSET; /* actually |= */
729 } 1601 }
730#endif
731 1602
732 { 1603 if (o_reify & EV__IOFDSET)
733 unsigned char o_events = anfd->events;
734 unsigned char o_reify = anfd->reify;
735
736 anfd->reify = 0;
737 anfd->events = events;
738
739 if (o_events != events || o_reify & EV_IOFDSET)
740 backend_modify (EV_A_ fd, o_events, events); 1604 backend_modify (EV_A_ fd, o_events, anfd->events);
741 }
742 } 1605 }
743 1606
744 fdchangecnt = 0; 1607 fdchangecnt = 0;
745} 1608}
746 1609
747void inline_size 1610/* something about the given fd changed */
1611inline_size void
748fd_change (EV_P_ int fd, int flags) 1612fd_change (EV_P_ int fd, int flags)
749{ 1613{
750 unsigned char reify = anfds [fd].reify; 1614 unsigned char reify = anfds [fd].reify;
751 anfds [fd].reify |= flags; 1615 anfds [fd].reify |= flags;
752 1616
… …
756 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1620 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
757 fdchanges [fdchangecnt - 1] = fd; 1621 fdchanges [fdchangecnt - 1] = fd;
758 } 1622 }
759} 1623}
760 1624
761void inline_speed 1625/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1626inline_speed void ecb_cold
762fd_kill (EV_P_ int fd) 1627fd_kill (EV_P_ int fd)
763{ 1628{
764 ev_io *w; 1629 ev_io *w;
765 1630
766 while ((w = (ev_io *)anfds [fd].head)) 1631 while ((w = (ev_io *)anfds [fd].head))
… …
768 ev_io_stop (EV_A_ w); 1633 ev_io_stop (EV_A_ w);
769 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1634 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
770 } 1635 }
771} 1636}
772 1637
773int inline_size 1638/* check whether the given fd is actually valid, for error recovery */
1639inline_size int ecb_cold
774fd_valid (int fd) 1640fd_valid (int fd)
775{ 1641{
776#ifdef _WIN32 1642#ifdef _WIN32
777 return _get_osfhandle (fd) != -1; 1643 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
778#else 1644#else
779 return fcntl (fd, F_GETFD) != -1; 1645 return fcntl (fd, F_GETFD) != -1;
780#endif 1646#endif
781} 1647}
782 1648
783/* called on EBADF to verify fds */ 1649/* called on EBADF to verify fds */
784static void noinline 1650static void noinline ecb_cold
785fd_ebadf (EV_P) 1651fd_ebadf (EV_P)
786{ 1652{
787 int fd; 1653 int fd;
788 1654
789 for (fd = 0; fd < anfdmax; ++fd) 1655 for (fd = 0; fd < anfdmax; ++fd)
… …
791 if (!fd_valid (fd) && errno == EBADF) 1657 if (!fd_valid (fd) && errno == EBADF)
792 fd_kill (EV_A_ fd); 1658 fd_kill (EV_A_ fd);
793} 1659}
794 1660
795/* called on ENOMEM in select/poll to kill some fds and retry */ 1661/* called on ENOMEM in select/poll to kill some fds and retry */
796static void noinline 1662static void noinline ecb_cold
797fd_enomem (EV_P) 1663fd_enomem (EV_P)
798{ 1664{
799 int fd; 1665 int fd;
800 1666
801 for (fd = anfdmax; fd--; ) 1667 for (fd = anfdmax; fd--; )
802 if (anfds [fd].events) 1668 if (anfds [fd].events)
803 { 1669 {
804 fd_kill (EV_A_ fd); 1670 fd_kill (EV_A_ fd);
805 return; 1671 break;
806 } 1672 }
807} 1673}
808 1674
809/* usually called after fork if backend needs to re-arm all fds from scratch */ 1675/* usually called after fork if backend needs to re-arm all fds from scratch */
810static void noinline 1676static void noinline
… …
814 1680
815 for (fd = 0; fd < anfdmax; ++fd) 1681 for (fd = 0; fd < anfdmax; ++fd)
816 if (anfds [fd].events) 1682 if (anfds [fd].events)
817 { 1683 {
818 anfds [fd].events = 0; 1684 anfds [fd].events = 0;
1685 anfds [fd].emask = 0;
819 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1686 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
820 } 1687 }
821} 1688}
822 1689
1690/* used to prepare libev internal fd's */
1691/* this is not fork-safe */
1692inline_speed void
1693fd_intern (int fd)
1694{
1695#ifdef _WIN32
1696 unsigned long arg = 1;
1697 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1698#else
1699 fcntl (fd, F_SETFD, FD_CLOEXEC);
1700 fcntl (fd, F_SETFL, O_NONBLOCK);
1701#endif
1702}
1703
823/*****************************************************************************/ 1704/*****************************************************************************/
824 1705
825/* 1706/*
826 * the heap functions want a real array index. array index 0 uis guaranteed to not 1707 * the heap functions want a real array index. array index 0 is guaranteed to not
827 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1708 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
828 * the branching factor of the d-tree. 1709 * the branching factor of the d-tree.
829 */ 1710 */
830 1711
831/* 1712/*
… …
840#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1721#define HEAP0 (DHEAP - 1) /* index of first element in heap */
841#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1722#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
842#define UPHEAP_DONE(p,k) ((p) == (k)) 1723#define UPHEAP_DONE(p,k) ((p) == (k))
843 1724
844/* away from the root */ 1725/* away from the root */
845void inline_speed 1726inline_speed void
846downheap (ANHE *heap, int N, int k) 1727downheap (ANHE *heap, int N, int k)
847{ 1728{
848 ANHE he = heap [k]; 1729 ANHE he = heap [k];
849 ANHE *E = heap + N + HEAP0; 1730 ANHE *E = heap + N + HEAP0;
850 1731
… …
890#define HEAP0 1 1771#define HEAP0 1
891#define HPARENT(k) ((k) >> 1) 1772#define HPARENT(k) ((k) >> 1)
892#define UPHEAP_DONE(p,k) (!(p)) 1773#define UPHEAP_DONE(p,k) (!(p))
893 1774
894/* away from the root */ 1775/* away from the root */
895void inline_speed 1776inline_speed void
896downheap (ANHE *heap, int N, int k) 1777downheap (ANHE *heap, int N, int k)
897{ 1778{
898 ANHE he = heap [k]; 1779 ANHE he = heap [k];
899 1780
900 for (;;) 1781 for (;;)
901 { 1782 {
902 int c = k << 1; 1783 int c = k << 1;
903 1784
904 if (c > N + HEAP0 - 1) 1785 if (c >= N + HEAP0)
905 break; 1786 break;
906 1787
907 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1788 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
908 ? 1 : 0; 1789 ? 1 : 0;
909 1790
… …
920 ev_active (ANHE_w (he)) = k; 1801 ev_active (ANHE_w (he)) = k;
921} 1802}
922#endif 1803#endif
923 1804
924/* towards the root */ 1805/* towards the root */
925void inline_speed 1806inline_speed void
926upheap (ANHE *heap, int k) 1807upheap (ANHE *heap, int k)
927{ 1808{
928 ANHE he = heap [k]; 1809 ANHE he = heap [k];
929 1810
930 for (;;) 1811 for (;;)
… …
941 1822
942 heap [k] = he; 1823 heap [k] = he;
943 ev_active (ANHE_w (he)) = k; 1824 ev_active (ANHE_w (he)) = k;
944} 1825}
945 1826
946void inline_size 1827/* move an element suitably so it is in a correct place */
1828inline_size void
947adjustheap (ANHE *heap, int N, int k) 1829adjustheap (ANHE *heap, int N, int k)
948{ 1830{
949 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1831 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
950 upheap (heap, k); 1832 upheap (heap, k);
951 else 1833 else
952 downheap (heap, N, k); 1834 downheap (heap, N, k);
953} 1835}
954 1836
955/* rebuild the heap: this function is used only once and executed rarely */ 1837/* rebuild the heap: this function is used only once and executed rarely */
956void inline_size 1838inline_size void
957reheap (ANHE *heap, int N) 1839reheap (ANHE *heap, int N)
958{ 1840{
959 int i; 1841 int i;
960 1842
961 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1843 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
964 upheap (heap, i + HEAP0); 1846 upheap (heap, i + HEAP0);
965} 1847}
966 1848
967/*****************************************************************************/ 1849/*****************************************************************************/
968 1850
1851/* associate signal watchers to a signal signal */
969typedef struct 1852typedef struct
970{ 1853{
1854 EV_ATOMIC_T pending;
1855#if EV_MULTIPLICITY
1856 EV_P;
1857#endif
971 WL head; 1858 WL head;
972 EV_ATOMIC_T gotsig;
973} ANSIG; 1859} ANSIG;
974 1860
975static ANSIG *signals; 1861static ANSIG signals [EV_NSIG - 1];
976static int signalmax;
977
978static EV_ATOMIC_T gotsig;
979
980void inline_size
981signals_init (ANSIG *base, int count)
982{
983 while (count--)
984 {
985 base->head = 0;
986 base->gotsig = 0;
987
988 ++base;
989 }
990}
991 1862
992/*****************************************************************************/ 1863/*****************************************************************************/
993 1864
994void inline_speed 1865#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
995fd_intern (int fd)
996{
997#ifdef _WIN32
998 unsigned long arg = 1;
999 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1000#else
1001 fcntl (fd, F_SETFD, FD_CLOEXEC);
1002 fcntl (fd, F_SETFL, O_NONBLOCK);
1003#endif
1004}
1005 1866
1006static void noinline 1867static void noinline ecb_cold
1007evpipe_init (EV_P) 1868evpipe_init (EV_P)
1008{ 1869{
1009 if (!ev_is_active (&pipeev)) 1870 if (!ev_is_active (&pipe_w))
1871 {
1872 int fds [2];
1873
1874# if EV_USE_EVENTFD
1875 fds [0] = -1;
1876 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1877 if (fds [1] < 0 && errno == EINVAL)
1878 fds [1] = eventfd (0, 0);
1879
1880 if (fds [1] < 0)
1881# endif
1882 {
1883 while (pipe (fds))
1884 ev_syserr ("(libev) error creating signal/async pipe");
1885
1886 fd_intern (fds [0]);
1887 }
1888
1889 fd_intern (fds [1]);
1890
1891 evpipe [0] = fds [0];
1892
1893 if (evpipe [1] < 0)
1894 evpipe [1] = fds [1]; /* first call, set write fd */
1895 else
1896 {
1897 /* on subsequent calls, do not change evpipe [1] */
1898 /* so that evpipe_write can always rely on its value. */
1899 /* this branch does not do anything sensible on windows, */
1900 /* so must not be executed on windows */
1901
1902 dup2 (fds [1], evpipe [1]);
1903 close (fds [1]);
1904 }
1905
1906 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
1907 ev_io_start (EV_A_ &pipe_w);
1908 ev_unref (EV_A); /* watcher should not keep loop alive */
1010 { 1909 }
1910}
1911
1912inline_speed void
1913evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1914{
1915 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1916
1917 if (expect_true (*flag))
1918 return;
1919
1920 *flag = 1;
1921 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1922
1923 pipe_write_skipped = 1;
1924
1925 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1926
1927 if (pipe_write_wanted)
1928 {
1929 int old_errno;
1930
1931 pipe_write_skipped = 0;
1932 ECB_MEMORY_FENCE_RELEASE;
1933
1934 old_errno = errno; /* save errno because write will clobber it */
1935
1011#if EV_USE_EVENTFD 1936#if EV_USE_EVENTFD
1012 if ((evfd = eventfd (0, 0)) >= 0) 1937 if (evpipe [0] < 0)
1013 { 1938 {
1014 evpipe [0] = -1; 1939 uint64_t counter = 1;
1015 fd_intern (evfd); 1940 write (evpipe [1], &counter, sizeof (uint64_t));
1016 ev_io_set (&pipeev, evfd, EV_READ);
1017 } 1941 }
1018 else 1942 else
1019#endif 1943#endif
1020 { 1944 {
1021 while (pipe (evpipe)) 1945#ifdef _WIN32
1022 syserr ("(libev) error creating signal/async pipe"); 1946 WSABUF buf;
1023 1947 DWORD sent;
1024 fd_intern (evpipe [0]); 1948 buf.buf = &buf;
1025 fd_intern (evpipe [1]); 1949 buf.len = 1;
1026 ev_io_set (&pipeev, evpipe [0], EV_READ); 1950 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1951#else
1952 write (evpipe [1], &(evpipe [1]), 1);
1953#endif
1027 } 1954 }
1028 1955
1029 ev_io_start (EV_A_ &pipeev); 1956 errno = old_errno;
1030 ev_unref (EV_A); /* watcher should not keep loop alive */
1031 }
1032}
1033
1034void inline_size
1035evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1036{
1037 if (!*flag)
1038 { 1957 }
1039 int old_errno = errno; /* save errno because write might clobber it */ 1958}
1040 1959
1041 *flag = 1; 1960/* called whenever the libev signal pipe */
1961/* got some events (signal, async) */
1962static void
1963pipecb (EV_P_ ev_io *iow, int revents)
1964{
1965 int i;
1042 1966
1967 if (revents & EV_READ)
1968 {
1043#if EV_USE_EVENTFD 1969#if EV_USE_EVENTFD
1044 if (evfd >= 0) 1970 if (evpipe [0] < 0)
1045 { 1971 {
1046 uint64_t counter = 1; 1972 uint64_t counter;
1047 write (evfd, &counter, sizeof (uint64_t)); 1973 read (evpipe [1], &counter, sizeof (uint64_t));
1048 } 1974 }
1049 else 1975 else
1050#endif 1976#endif
1051 write (evpipe [1], &old_errno, 1); 1977 {
1052
1053 errno = old_errno;
1054 }
1055}
1056
1057static void
1058pipecb (EV_P_ ev_io *iow, int revents)
1059{
1060#if EV_USE_EVENTFD
1061 if (evfd >= 0)
1062 {
1063 uint64_t counter;
1064 read (evfd, &counter, sizeof (uint64_t));
1065 }
1066 else
1067#endif
1068 {
1069 char dummy; 1978 char dummy[4];
1979#ifdef _WIN32
1980 WSABUF buf;
1981 DWORD recvd;
1982 DWORD flags = 0;
1983 buf.buf = dummy;
1984 buf.len = sizeof (dummy);
1985 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
1986#else
1070 read (evpipe [0], &dummy, 1); 1987 read (evpipe [0], &dummy, sizeof (dummy));
1988#endif
1989 }
1990 }
1991
1992 pipe_write_skipped = 0;
1993
1994 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1995
1996#if EV_SIGNAL_ENABLE
1997 if (sig_pending)
1071 } 1998 {
1999 sig_pending = 0;
1072 2000
1073 if (gotsig && ev_is_default_loop (EV_A)) 2001 ECB_MEMORY_FENCE;
1074 {
1075 int signum;
1076 gotsig = 0;
1077 2002
1078 for (signum = signalmax; signum--; ) 2003 for (i = EV_NSIG - 1; i--; )
1079 if (signals [signum].gotsig) 2004 if (expect_false (signals [i].pending))
1080 ev_feed_signal_event (EV_A_ signum + 1); 2005 ev_feed_signal_event (EV_A_ i + 1);
1081 } 2006 }
2007#endif
1082 2008
1083#if EV_ASYNC_ENABLE 2009#if EV_ASYNC_ENABLE
1084 if (gotasync) 2010 if (async_pending)
1085 { 2011 {
1086 int i; 2012 async_pending = 0;
1087 gotasync = 0; 2013
2014 ECB_MEMORY_FENCE;
1088 2015
1089 for (i = asynccnt; i--; ) 2016 for (i = asynccnt; i--; )
1090 if (asyncs [i]->sent) 2017 if (asyncs [i]->sent)
1091 { 2018 {
1092 asyncs [i]->sent = 0; 2019 asyncs [i]->sent = 0;
2020 ECB_MEMORY_FENCE_RELEASE;
1093 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2021 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1094 } 2022 }
1095 } 2023 }
1096#endif 2024#endif
1097} 2025}
1098 2026
1099/*****************************************************************************/ 2027/*****************************************************************************/
1100 2028
2029void
2030ev_feed_signal (int signum) EV_THROW
2031{
2032#if EV_MULTIPLICITY
2033 EV_P = signals [signum - 1].loop;
2034
2035 if (!EV_A)
2036 return;
2037#endif
2038
2039 signals [signum - 1].pending = 1;
2040 evpipe_write (EV_A_ &sig_pending);
2041}
2042
1101static void 2043static void
1102ev_sighandler (int signum) 2044ev_sighandler (int signum)
1103{ 2045{
2046#ifdef _WIN32
2047 signal (signum, ev_sighandler);
2048#endif
2049
2050 ev_feed_signal (signum);
2051}
2052
2053void noinline
2054ev_feed_signal_event (EV_P_ int signum) EV_THROW
2055{
2056 WL w;
2057
2058 if (expect_false (signum <= 0 || signum >= EV_NSIG))
2059 return;
2060
2061 --signum;
2062
1104#if EV_MULTIPLICITY 2063#if EV_MULTIPLICITY
1105 struct ev_loop *loop = &default_loop_struct; 2064 /* it is permissible to try to feed a signal to the wrong loop */
1106#endif 2065 /* or, likely more useful, feeding a signal nobody is waiting for */
1107 2066
1108#if _WIN32 2067 if (expect_false (signals [signum].loop != EV_A))
1109 signal (signum, ev_sighandler);
1110#endif
1111
1112 signals [signum - 1].gotsig = 1;
1113 evpipe_write (EV_A_ &gotsig);
1114}
1115
1116void noinline
1117ev_feed_signal_event (EV_P_ int signum)
1118{
1119 WL w;
1120
1121#if EV_MULTIPLICITY
1122 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1123#endif
1124
1125 --signum;
1126
1127 if (signum < 0 || signum >= signalmax)
1128 return; 2068 return;
2069#endif
1129 2070
1130 signals [signum].gotsig = 0; 2071 signals [signum].pending = 0;
2072 ECB_MEMORY_FENCE_RELEASE;
1131 2073
1132 for (w = signals [signum].head; w; w = w->next) 2074 for (w = signals [signum].head; w; w = w->next)
1133 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2075 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1134} 2076}
1135 2077
2078#if EV_USE_SIGNALFD
2079static void
2080sigfdcb (EV_P_ ev_io *iow, int revents)
2081{
2082 struct signalfd_siginfo si[2], *sip; /* these structs are big */
2083
2084 for (;;)
2085 {
2086 ssize_t res = read (sigfd, si, sizeof (si));
2087
2088 /* not ISO-C, as res might be -1, but works with SuS */
2089 for (sip = si; (char *)sip < (char *)si + res; ++sip)
2090 ev_feed_signal_event (EV_A_ sip->ssi_signo);
2091
2092 if (res < (ssize_t)sizeof (si))
2093 break;
2094 }
2095}
2096#endif
2097
2098#endif
2099
1136/*****************************************************************************/ 2100/*****************************************************************************/
1137 2101
2102#if EV_CHILD_ENABLE
1138static WL childs [EV_PID_HASHSIZE]; 2103static WL childs [EV_PID_HASHSIZE];
1139
1140#ifndef _WIN32
1141 2104
1142static ev_signal childev; 2105static ev_signal childev;
1143 2106
1144#ifndef WIFCONTINUED 2107#ifndef WIFCONTINUED
1145# define WIFCONTINUED(status) 0 2108# define WIFCONTINUED(status) 0
1146#endif 2109#endif
1147 2110
1148void inline_speed 2111/* handle a single child status event */
2112inline_speed void
1149child_reap (EV_P_ int chain, int pid, int status) 2113child_reap (EV_P_ int chain, int pid, int status)
1150{ 2114{
1151 ev_child *w; 2115 ev_child *w;
1152 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 2116 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1153 2117
1154 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2118 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1155 { 2119 {
1156 if ((w->pid == pid || !w->pid) 2120 if ((w->pid == pid || !w->pid)
1157 && (!traced || (w->flags & 1))) 2121 && (!traced || (w->flags & 1)))
1158 { 2122 {
1159 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 2123 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1166 2130
1167#ifndef WCONTINUED 2131#ifndef WCONTINUED
1168# define WCONTINUED 0 2132# define WCONTINUED 0
1169#endif 2133#endif
1170 2134
2135/* called on sigchld etc., calls waitpid */
1171static void 2136static void
1172childcb (EV_P_ ev_signal *sw, int revents) 2137childcb (EV_P_ ev_signal *sw, int revents)
1173{ 2138{
1174 int pid, status; 2139 int pid, status;
1175 2140
… …
1183 /* make sure we are called again until all children have been reaped */ 2148 /* make sure we are called again until all children have been reaped */
1184 /* we need to do it this way so that the callback gets called before we continue */ 2149 /* we need to do it this way so that the callback gets called before we continue */
1185 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2150 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1186 2151
1187 child_reap (EV_A_ pid, pid, status); 2152 child_reap (EV_A_ pid, pid, status);
1188 if (EV_PID_HASHSIZE > 1) 2153 if ((EV_PID_HASHSIZE) > 1)
1189 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2154 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1190} 2155}
1191 2156
1192#endif 2157#endif
1193 2158
1194/*****************************************************************************/ 2159/*****************************************************************************/
1195 2160
2161#if EV_USE_IOCP
2162# include "ev_iocp.c"
2163#endif
1196#if EV_USE_PORT 2164#if EV_USE_PORT
1197# include "ev_port.c" 2165# include "ev_port.c"
1198#endif 2166#endif
1199#if EV_USE_KQUEUE 2167#if EV_USE_KQUEUE
1200# include "ev_kqueue.c" 2168# include "ev_kqueue.c"
… …
1207#endif 2175#endif
1208#if EV_USE_SELECT 2176#if EV_USE_SELECT
1209# include "ev_select.c" 2177# include "ev_select.c"
1210#endif 2178#endif
1211 2179
1212int 2180int ecb_cold
1213ev_version_major (void) 2181ev_version_major (void) EV_THROW
1214{ 2182{
1215 return EV_VERSION_MAJOR; 2183 return EV_VERSION_MAJOR;
1216} 2184}
1217 2185
1218int 2186int ecb_cold
1219ev_version_minor (void) 2187ev_version_minor (void) EV_THROW
1220{ 2188{
1221 return EV_VERSION_MINOR; 2189 return EV_VERSION_MINOR;
1222} 2190}
1223 2191
1224/* return true if we are running with elevated privileges and should ignore env variables */ 2192/* return true if we are running with elevated privileges and should ignore env variables */
1225int inline_size 2193int inline_size ecb_cold
1226enable_secure (void) 2194enable_secure (void)
1227{ 2195{
1228#ifdef _WIN32 2196#ifdef _WIN32
1229 return 0; 2197 return 0;
1230#else 2198#else
1231 return getuid () != geteuid () 2199 return getuid () != geteuid ()
1232 || getgid () != getegid (); 2200 || getgid () != getegid ();
1233#endif 2201#endif
1234} 2202}
1235 2203
1236unsigned int 2204unsigned int ecb_cold
1237ev_supported_backends (void) 2205ev_supported_backends (void) EV_THROW
1238{ 2206{
1239 unsigned int flags = 0; 2207 unsigned int flags = 0;
1240 2208
1241 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2209 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1242 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2210 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1245 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2213 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1246 2214
1247 return flags; 2215 return flags;
1248} 2216}
1249 2217
1250unsigned int 2218unsigned int ecb_cold
1251ev_recommended_backends (void) 2219ev_recommended_backends (void) EV_THROW
1252{ 2220{
1253 unsigned int flags = ev_supported_backends (); 2221 unsigned int flags = ev_supported_backends ();
1254 2222
1255#ifndef __NetBSD__ 2223#ifndef __NetBSD__
1256 /* kqueue is borked on everything but netbsd apparently */ 2224 /* kqueue is borked on everything but netbsd apparently */
1257 /* it usually doesn't work correctly on anything but sockets and pipes */ 2225 /* it usually doesn't work correctly on anything but sockets and pipes */
1258 flags &= ~EVBACKEND_KQUEUE; 2226 flags &= ~EVBACKEND_KQUEUE;
1259#endif 2227#endif
1260#ifdef __APPLE__ 2228#ifdef __APPLE__
1261 // flags &= ~EVBACKEND_KQUEUE; for documentation 2229 /* only select works correctly on that "unix-certified" platform */
1262 flags &= ~EVBACKEND_POLL; 2230 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
2231 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
2232#endif
2233#ifdef __FreeBSD__
2234 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1263#endif 2235#endif
1264 2236
1265 return flags; 2237 return flags;
1266} 2238}
1267 2239
2240unsigned int ecb_cold
2241ev_embeddable_backends (void) EV_THROW
2242{
2243 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2244
2245 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2246 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
2247 flags &= ~EVBACKEND_EPOLL;
2248
2249 return flags;
2250}
2251
1268unsigned int 2252unsigned int
1269ev_embeddable_backends (void) 2253ev_backend (EV_P) EV_THROW
1270{ 2254{
1271 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2255 return backend;
1272
1273 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1274 /* please fix it and tell me how to detect the fix */
1275 flags &= ~EVBACKEND_EPOLL;
1276
1277 return flags;
1278} 2256}
1279 2257
2258#if EV_FEATURE_API
1280unsigned int 2259unsigned int
1281ev_backend (EV_P) 2260ev_iteration (EV_P) EV_THROW
1282{ 2261{
1283 return backend; 2262 return loop_count;
1284} 2263}
1285 2264
1286unsigned int 2265unsigned int
1287ev_loop_count (EV_P) 2266ev_depth (EV_P) EV_THROW
1288{ 2267{
1289 return loop_count; 2268 return loop_depth;
1290} 2269}
1291 2270
1292void 2271void
1293ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2272ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1294{ 2273{
1295 io_blocktime = interval; 2274 io_blocktime = interval;
1296} 2275}
1297 2276
1298void 2277void
1299ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2278ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1300{ 2279{
1301 timeout_blocktime = interval; 2280 timeout_blocktime = interval;
1302} 2281}
1303 2282
2283void
2284ev_set_userdata (EV_P_ void *data) EV_THROW
2285{
2286 userdata = data;
2287}
2288
2289void *
2290ev_userdata (EV_P) EV_THROW
2291{
2292 return userdata;
2293}
2294
2295void
2296ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
2297{
2298 invoke_cb = invoke_pending_cb;
2299}
2300
2301void
2302ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2303{
2304 release_cb = release;
2305 acquire_cb = acquire;
2306}
2307#endif
2308
2309/* initialise a loop structure, must be zero-initialised */
1304static void noinline 2310static void noinline ecb_cold
1305loop_init (EV_P_ unsigned int flags) 2311loop_init (EV_P_ unsigned int flags) EV_THROW
1306{ 2312{
1307 if (!backend) 2313 if (!backend)
1308 { 2314 {
2315 origflags = flags;
2316
2317#if EV_USE_REALTIME
2318 if (!have_realtime)
2319 {
2320 struct timespec ts;
2321
2322 if (!clock_gettime (CLOCK_REALTIME, &ts))
2323 have_realtime = 1;
2324 }
2325#endif
2326
1309#if EV_USE_MONOTONIC 2327#if EV_USE_MONOTONIC
2328 if (!have_monotonic)
1310 { 2329 {
1311 struct timespec ts; 2330 struct timespec ts;
2331
1312 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2332 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1313 have_monotonic = 1; 2333 have_monotonic = 1;
1314 } 2334 }
1315#endif
1316
1317 ev_rt_now = ev_time ();
1318 mn_now = get_clock ();
1319 now_floor = mn_now;
1320 rtmn_diff = ev_rt_now - mn_now;
1321
1322 io_blocktime = 0.;
1323 timeout_blocktime = 0.;
1324 backend = 0;
1325 backend_fd = -1;
1326 gotasync = 0;
1327#if EV_USE_INOTIFY
1328 fs_fd = -2;
1329#endif 2335#endif
1330 2336
1331 /* pid check not overridable via env */ 2337 /* pid check not overridable via env */
1332#ifndef _WIN32 2338#ifndef _WIN32
1333 if (flags & EVFLAG_FORKCHECK) 2339 if (flags & EVFLAG_FORKCHECK)
… …
1337 if (!(flags & EVFLAG_NOENV) 2343 if (!(flags & EVFLAG_NOENV)
1338 && !enable_secure () 2344 && !enable_secure ()
1339 && getenv ("LIBEV_FLAGS")) 2345 && getenv ("LIBEV_FLAGS"))
1340 flags = atoi (getenv ("LIBEV_FLAGS")); 2346 flags = atoi (getenv ("LIBEV_FLAGS"));
1341 2347
1342 if (!(flags & 0x0000ffffU)) 2348 ev_rt_now = ev_time ();
2349 mn_now = get_clock ();
2350 now_floor = mn_now;
2351 rtmn_diff = ev_rt_now - mn_now;
2352#if EV_FEATURE_API
2353 invoke_cb = ev_invoke_pending;
2354#endif
2355
2356 io_blocktime = 0.;
2357 timeout_blocktime = 0.;
2358 backend = 0;
2359 backend_fd = -1;
2360 sig_pending = 0;
2361#if EV_ASYNC_ENABLE
2362 async_pending = 0;
2363#endif
2364 pipe_write_skipped = 0;
2365 pipe_write_wanted = 0;
2366 evpipe [0] = -1;
2367 evpipe [1] = -1;
2368#if EV_USE_INOTIFY
2369 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2370#endif
2371#if EV_USE_SIGNALFD
2372 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2373#endif
2374
2375 if (!(flags & EVBACKEND_MASK))
1343 flags |= ev_recommended_backends (); 2376 flags |= ev_recommended_backends ();
1344 2377
2378#if EV_USE_IOCP
2379 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2380#endif
1345#if EV_USE_PORT 2381#if EV_USE_PORT
1346 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2382 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1347#endif 2383#endif
1348#if EV_USE_KQUEUE 2384#if EV_USE_KQUEUE
1349 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2385 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1356#endif 2392#endif
1357#if EV_USE_SELECT 2393#if EV_USE_SELECT
1358 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2394 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1359#endif 2395#endif
1360 2396
2397 ev_prepare_init (&pending_w, pendingcb);
2398
2399#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1361 ev_init (&pipeev, pipecb); 2400 ev_init (&pipe_w, pipecb);
1362 ev_set_priority (&pipeev, EV_MAXPRI); 2401 ev_set_priority (&pipe_w, EV_MAXPRI);
2402#endif
1363 } 2403 }
1364} 2404}
1365 2405
1366static void noinline 2406/* free up a loop structure */
2407void ecb_cold
1367loop_destroy (EV_P) 2408ev_loop_destroy (EV_P)
1368{ 2409{
1369 int i; 2410 int i;
1370 2411
2412#if EV_MULTIPLICITY
2413 /* mimic free (0) */
2414 if (!EV_A)
2415 return;
2416#endif
2417
2418#if EV_CLEANUP_ENABLE
2419 /* queue cleanup watchers (and execute them) */
2420 if (expect_false (cleanupcnt))
2421 {
2422 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2423 EV_INVOKE_PENDING;
2424 }
2425#endif
2426
2427#if EV_CHILD_ENABLE
2428 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2429 {
2430 ev_ref (EV_A); /* child watcher */
2431 ev_signal_stop (EV_A_ &childev);
2432 }
2433#endif
2434
1371 if (ev_is_active (&pipeev)) 2435 if (ev_is_active (&pipe_w))
1372 { 2436 {
1373 ev_ref (EV_A); /* signal watcher */ 2437 /*ev_ref (EV_A);*/
1374 ev_io_stop (EV_A_ &pipeev); 2438 /*ev_io_stop (EV_A_ &pipe_w);*/
1375 2439
2440 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2441 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2442 }
2443
1376#if EV_USE_EVENTFD 2444#if EV_USE_SIGNALFD
1377 if (evfd >= 0) 2445 if (ev_is_active (&sigfd_w))
1378 close (evfd); 2446 close (sigfd);
1379#endif 2447#endif
1380
1381 if (evpipe [0] >= 0)
1382 {
1383 close (evpipe [0]);
1384 close (evpipe [1]);
1385 }
1386 }
1387 2448
1388#if EV_USE_INOTIFY 2449#if EV_USE_INOTIFY
1389 if (fs_fd >= 0) 2450 if (fs_fd >= 0)
1390 close (fs_fd); 2451 close (fs_fd);
1391#endif 2452#endif
1392 2453
1393 if (backend_fd >= 0) 2454 if (backend_fd >= 0)
1394 close (backend_fd); 2455 close (backend_fd);
1395 2456
2457#if EV_USE_IOCP
2458 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2459#endif
1396#if EV_USE_PORT 2460#if EV_USE_PORT
1397 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2461 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1398#endif 2462#endif
1399#if EV_USE_KQUEUE 2463#if EV_USE_KQUEUE
1400 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2464 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1415#if EV_IDLE_ENABLE 2479#if EV_IDLE_ENABLE
1416 array_free (idle, [i]); 2480 array_free (idle, [i]);
1417#endif 2481#endif
1418 } 2482 }
1419 2483
1420 ev_free (anfds); anfdmax = 0; 2484 ev_free (anfds); anfds = 0; anfdmax = 0;
1421 2485
1422 /* have to use the microsoft-never-gets-it-right macro */ 2486 /* have to use the microsoft-never-gets-it-right macro */
2487 array_free (rfeed, EMPTY);
1423 array_free (fdchange, EMPTY); 2488 array_free (fdchange, EMPTY);
1424 array_free (timer, EMPTY); 2489 array_free (timer, EMPTY);
1425#if EV_PERIODIC_ENABLE 2490#if EV_PERIODIC_ENABLE
1426 array_free (periodic, EMPTY); 2491 array_free (periodic, EMPTY);
1427#endif 2492#endif
1428#if EV_FORK_ENABLE 2493#if EV_FORK_ENABLE
1429 array_free (fork, EMPTY); 2494 array_free (fork, EMPTY);
1430#endif 2495#endif
2496#if EV_CLEANUP_ENABLE
2497 array_free (cleanup, EMPTY);
2498#endif
1431 array_free (prepare, EMPTY); 2499 array_free (prepare, EMPTY);
1432 array_free (check, EMPTY); 2500 array_free (check, EMPTY);
1433#if EV_ASYNC_ENABLE 2501#if EV_ASYNC_ENABLE
1434 array_free (async, EMPTY); 2502 array_free (async, EMPTY);
1435#endif 2503#endif
1436 2504
1437 backend = 0; 2505 backend = 0;
2506
2507#if EV_MULTIPLICITY
2508 if (ev_is_default_loop (EV_A))
2509#endif
2510 ev_default_loop_ptr = 0;
2511#if EV_MULTIPLICITY
2512 else
2513 ev_free (EV_A);
2514#endif
1438} 2515}
1439 2516
1440#if EV_USE_INOTIFY 2517#if EV_USE_INOTIFY
1441void inline_size infy_fork (EV_P); 2518inline_size void infy_fork (EV_P);
1442#endif 2519#endif
1443 2520
1444void inline_size 2521inline_size void
1445loop_fork (EV_P) 2522loop_fork (EV_P)
1446{ 2523{
1447#if EV_USE_PORT 2524#if EV_USE_PORT
1448 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2525 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1449#endif 2526#endif
… …
1455#endif 2532#endif
1456#if EV_USE_INOTIFY 2533#if EV_USE_INOTIFY
1457 infy_fork (EV_A); 2534 infy_fork (EV_A);
1458#endif 2535#endif
1459 2536
2537#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1460 if (ev_is_active (&pipeev)) 2538 if (ev_is_active (&pipe_w))
1461 { 2539 {
1462 /* this "locks" the handlers against writing to the pipe */ 2540 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1463 /* while we modify the fd vars */
1464 gotsig = 1;
1465#if EV_ASYNC_ENABLE
1466 gotasync = 1;
1467#endif
1468 2541
1469 ev_ref (EV_A); 2542 ev_ref (EV_A);
1470 ev_io_stop (EV_A_ &pipeev); 2543 ev_io_stop (EV_A_ &pipe_w);
1471
1472#if EV_USE_EVENTFD
1473 if (evfd >= 0)
1474 close (evfd);
1475#endif
1476 2544
1477 if (evpipe [0] >= 0) 2545 if (evpipe [0] >= 0)
1478 { 2546 EV_WIN32_CLOSE_FD (evpipe [0]);
1479 close (evpipe [0]);
1480 close (evpipe [1]);
1481 }
1482 2547
1483 evpipe_init (EV_A); 2548 evpipe_init (EV_A);
1484 /* now iterate over everything, in case we missed something */ 2549 /* iterate over everything, in case we missed something before */
1485 pipecb (EV_A_ &pipeev, EV_READ); 2550 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1486 } 2551 }
2552#endif
1487 2553
1488 postfork = 0; 2554 postfork = 0;
1489} 2555}
1490 2556
1491#if EV_MULTIPLICITY 2557#if EV_MULTIPLICITY
1492 2558
1493struct ev_loop * 2559struct ev_loop * ecb_cold
1494ev_loop_new (unsigned int flags) 2560ev_loop_new (unsigned int flags) EV_THROW
1495{ 2561{
1496 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2562 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1497 2563
1498 memset (loop, 0, sizeof (struct ev_loop)); 2564 memset (EV_A, 0, sizeof (struct ev_loop));
1499
1500 loop_init (EV_A_ flags); 2565 loop_init (EV_A_ flags);
1501 2566
1502 if (ev_backend (EV_A)) 2567 if (ev_backend (EV_A))
1503 return loop; 2568 return EV_A;
1504 2569
2570 ev_free (EV_A);
1505 return 0; 2571 return 0;
1506} 2572}
1507 2573
1508void 2574#endif /* multiplicity */
1509ev_loop_destroy (EV_P)
1510{
1511 loop_destroy (EV_A);
1512 ev_free (loop);
1513}
1514
1515void
1516ev_loop_fork (EV_P)
1517{
1518 postfork = 1; /* must be in line with ev_default_fork */
1519}
1520 2575
1521#if EV_VERIFY 2576#if EV_VERIFY
1522static void noinline 2577static void noinline ecb_cold
1523verify_watcher (EV_P_ W w) 2578verify_watcher (EV_P_ W w)
1524{ 2579{
1525 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2580 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1526 2581
1527 if (w->pending) 2582 if (w->pending)
1528 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2583 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1529} 2584}
1530 2585
1531static void noinline 2586static void noinline ecb_cold
1532verify_heap (EV_P_ ANHE *heap, int N) 2587verify_heap (EV_P_ ANHE *heap, int N)
1533{ 2588{
1534 int i; 2589 int i;
1535 2590
1536 for (i = HEAP0; i < N + HEAP0; ++i) 2591 for (i = HEAP0; i < N + HEAP0; ++i)
1537 { 2592 {
1538 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 2593 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1539 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 2594 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1540 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 2595 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1541 2596
1542 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2597 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1543 } 2598 }
1544} 2599}
1545 2600
1546static void noinline 2601static void noinline ecb_cold
1547array_verify (EV_P_ W *ws, int cnt) 2602array_verify (EV_P_ W *ws, int cnt)
1548{ 2603{
1549 while (cnt--) 2604 while (cnt--)
1550 { 2605 {
1551 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2606 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1552 verify_watcher (EV_A_ ws [cnt]); 2607 verify_watcher (EV_A_ ws [cnt]);
1553 } 2608 }
1554} 2609}
1555#endif 2610#endif
1556 2611
1557void 2612#if EV_FEATURE_API
1558ev_loop_verify (EV_P) 2613void ecb_cold
2614ev_verify (EV_P) EV_THROW
1559{ 2615{
1560#if EV_VERIFY 2616#if EV_VERIFY
1561 int i; 2617 int i;
1562 WL w; 2618 WL w, w2;
1563 2619
1564 assert (activecnt >= -1); 2620 assert (activecnt >= -1);
1565 2621
1566 assert (fdchangemax >= fdchangecnt); 2622 assert (fdchangemax >= fdchangecnt);
1567 for (i = 0; i < fdchangecnt; ++i) 2623 for (i = 0; i < fdchangecnt; ++i)
1568 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 2624 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1569 2625
1570 assert (anfdmax >= 0); 2626 assert (anfdmax >= 0);
1571 for (i = 0; i < anfdmax; ++i) 2627 for (i = 0; i < anfdmax; ++i)
2628 {
2629 int j = 0;
2630
1572 for (w = anfds [i].head; w; w = w->next) 2631 for (w = w2 = anfds [i].head; w; w = w->next)
1573 { 2632 {
1574 verify_watcher (EV_A_ (W)w); 2633 verify_watcher (EV_A_ (W)w);
2634
2635 if (j++ & 1)
2636 {
2637 assert (("libev: io watcher list contains a loop", w != w2));
2638 w2 = w2->next;
2639 }
2640
1575 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 2641 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1576 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2642 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1577 } 2643 }
2644 }
1578 2645
1579 assert (timermax >= timercnt); 2646 assert (timermax >= timercnt);
1580 verify_heap (EV_A_ timers, timercnt); 2647 verify_heap (EV_A_ timers, timercnt);
1581 2648
1582#if EV_PERIODIC_ENABLE 2649#if EV_PERIODIC_ENABLE
… …
1597#if EV_FORK_ENABLE 2664#if EV_FORK_ENABLE
1598 assert (forkmax >= forkcnt); 2665 assert (forkmax >= forkcnt);
1599 array_verify (EV_A_ (W *)forks, forkcnt); 2666 array_verify (EV_A_ (W *)forks, forkcnt);
1600#endif 2667#endif
1601 2668
2669#if EV_CLEANUP_ENABLE
2670 assert (cleanupmax >= cleanupcnt);
2671 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2672#endif
2673
1602#if EV_ASYNC_ENABLE 2674#if EV_ASYNC_ENABLE
1603 assert (asyncmax >= asynccnt); 2675 assert (asyncmax >= asynccnt);
1604 array_verify (EV_A_ (W *)asyncs, asynccnt); 2676 array_verify (EV_A_ (W *)asyncs, asynccnt);
1605#endif 2677#endif
1606 2678
2679#if EV_PREPARE_ENABLE
1607 assert (preparemax >= preparecnt); 2680 assert (preparemax >= preparecnt);
1608 array_verify (EV_A_ (W *)prepares, preparecnt); 2681 array_verify (EV_A_ (W *)prepares, preparecnt);
2682#endif
1609 2683
2684#if EV_CHECK_ENABLE
1610 assert (checkmax >= checkcnt); 2685 assert (checkmax >= checkcnt);
1611 array_verify (EV_A_ (W *)checks, checkcnt); 2686 array_verify (EV_A_ (W *)checks, checkcnt);
2687#endif
1612 2688
1613# if 0 2689# if 0
2690#if EV_CHILD_ENABLE
1614 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2691 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1615 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2692 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2693#endif
1616# endif 2694# endif
1617#endif 2695#endif
1618} 2696}
1619 2697#endif
1620#endif /* multiplicity */
1621 2698
1622#if EV_MULTIPLICITY 2699#if EV_MULTIPLICITY
1623struct ev_loop * 2700struct ev_loop * ecb_cold
1624ev_default_loop_init (unsigned int flags)
1625#else 2701#else
1626int 2702int
2703#endif
1627ev_default_loop (unsigned int flags) 2704ev_default_loop (unsigned int flags) EV_THROW
1628#endif
1629{ 2705{
1630 if (!ev_default_loop_ptr) 2706 if (!ev_default_loop_ptr)
1631 { 2707 {
1632#if EV_MULTIPLICITY 2708#if EV_MULTIPLICITY
1633 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2709 EV_P = ev_default_loop_ptr = &default_loop_struct;
1634#else 2710#else
1635 ev_default_loop_ptr = 1; 2711 ev_default_loop_ptr = 1;
1636#endif 2712#endif
1637 2713
1638 loop_init (EV_A_ flags); 2714 loop_init (EV_A_ flags);
1639 2715
1640 if (ev_backend (EV_A)) 2716 if (ev_backend (EV_A))
1641 { 2717 {
1642#ifndef _WIN32 2718#if EV_CHILD_ENABLE
1643 ev_signal_init (&childev, childcb, SIGCHLD); 2719 ev_signal_init (&childev, childcb, SIGCHLD);
1644 ev_set_priority (&childev, EV_MAXPRI); 2720 ev_set_priority (&childev, EV_MAXPRI);
1645 ev_signal_start (EV_A_ &childev); 2721 ev_signal_start (EV_A_ &childev);
1646 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2722 ev_unref (EV_A); /* child watcher should not keep loop alive */
1647#endif 2723#endif
… …
1652 2728
1653 return ev_default_loop_ptr; 2729 return ev_default_loop_ptr;
1654} 2730}
1655 2731
1656void 2732void
1657ev_default_destroy (void) 2733ev_loop_fork (EV_P) EV_THROW
1658{ 2734{
1659#if EV_MULTIPLICITY 2735 postfork = 1;
1660 struct ev_loop *loop = ev_default_loop_ptr;
1661#endif
1662
1663#ifndef _WIN32
1664 ev_ref (EV_A); /* child watcher */
1665 ev_signal_stop (EV_A_ &childev);
1666#endif
1667
1668 loop_destroy (EV_A);
1669}
1670
1671void
1672ev_default_fork (void)
1673{
1674#if EV_MULTIPLICITY
1675 struct ev_loop *loop = ev_default_loop_ptr;
1676#endif
1677
1678 if (backend)
1679 postfork = 1; /* must be in line with ev_loop_fork */
1680} 2736}
1681 2737
1682/*****************************************************************************/ 2738/*****************************************************************************/
1683 2739
1684void 2740void
1685ev_invoke (EV_P_ void *w, int revents) 2741ev_invoke (EV_P_ void *w, int revents)
1686{ 2742{
1687 EV_CB_INVOKE ((W)w, revents); 2743 EV_CB_INVOKE ((W)w, revents);
1688} 2744}
1689 2745
1690void inline_speed 2746unsigned int
1691call_pending (EV_P) 2747ev_pending_count (EV_P) EV_THROW
1692{ 2748{
1693 int pri; 2749 int pri;
2750 unsigned int count = 0;
1694 2751
1695 for (pri = NUMPRI; pri--; ) 2752 for (pri = NUMPRI; pri--; )
2753 count += pendingcnt [pri];
2754
2755 return count;
2756}
2757
2758void noinline
2759ev_invoke_pending (EV_P)
2760{
2761 pendingpri = NUMPRI;
2762
2763 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2764 {
2765 --pendingpri;
2766
1696 while (pendingcnt [pri]) 2767 while (pendingcnt [pendingpri])
1697 {
1698 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1699
1700 if (expect_true (p->w))
1701 { 2768 {
1702 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 2769 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1703 2770
1704 p->w->pending = 0; 2771 p->w->pending = 0;
1705 EV_CB_INVOKE (p->w, p->events); 2772 EV_CB_INVOKE (p->w, p->events);
1706 EV_FREQUENT_CHECK; 2773 EV_FREQUENT_CHECK;
1707 } 2774 }
1708 } 2775 }
1709} 2776}
1710 2777
1711#if EV_IDLE_ENABLE 2778#if EV_IDLE_ENABLE
1712void inline_size 2779/* make idle watchers pending. this handles the "call-idle */
2780/* only when higher priorities are idle" logic */
2781inline_size void
1713idle_reify (EV_P) 2782idle_reify (EV_P)
1714{ 2783{
1715 if (expect_false (idleall)) 2784 if (expect_false (idleall))
1716 { 2785 {
1717 int pri; 2786 int pri;
… …
1729 } 2798 }
1730 } 2799 }
1731} 2800}
1732#endif 2801#endif
1733 2802
1734void inline_size 2803/* make timers pending */
2804inline_size void
1735timers_reify (EV_P) 2805timers_reify (EV_P)
1736{ 2806{
1737 EV_FREQUENT_CHECK; 2807 EV_FREQUENT_CHECK;
1738 2808
1739 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2809 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1740 { 2810 {
1741 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2811 do
1742
1743 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1744
1745 /* first reschedule or stop timer */
1746 if (w->repeat)
1747 { 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 {
1748 ev_at (w) += w->repeat; 2820 ev_at (w) += w->repeat;
1749 if (ev_at (w) < mn_now) 2821 if (ev_at (w) < mn_now)
1750 ev_at (w) = mn_now; 2822 ev_at (w) = mn_now;
1751 2823
1752 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.));
1753 2825
1754 ANHE_at_cache (timers [HEAP0]); 2826 ANHE_at_cache (timers [HEAP0]);
1755 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);
1756 } 2834 }
1757 else 2835 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1758 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1759 2836
1760 EV_FREQUENT_CHECK; 2837 feed_reverse_done (EV_A_ EV_TIMER);
1761 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1762 } 2838 }
1763} 2839}
1764 2840
1765#if EV_PERIODIC_ENABLE 2841#if EV_PERIODIC_ENABLE
1766void 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
1767periodics_reify (EV_P) 2869periodics_reify (EV_P)
1768{ 2870{
1769 EV_FREQUENT_CHECK; 2871 EV_FREQUENT_CHECK;
1770 2872
1771 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2873 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1772 { 2874 {
1773 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2875 do
1774
1775 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1776
1777 /* first reschedule or stop timer */
1778 if (w->reschedule_cb)
1779 { 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 {
1780 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2884 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1781 2885
1782 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));
1783 2887
1784 ANHE_at_cache (periodics [HEAP0]); 2888 ANHE_at_cache (periodics [HEAP0]);
1785 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);
1786 } 2902 }
1787 else if (w->interval) 2903 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1788 {
1789 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1790 /* if next trigger time is not sufficiently in the future, put it there */
1791 /* this might happen because of floating point inexactness */
1792 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1793 {
1794 ev_at (w) += w->interval;
1795 2904
1796 /* if interval is unreasonably low we might still have a time in the past */
1797 /* so correct this. this will make the periodic very inexact, but the user */
1798 /* has effectively asked to get triggered more often than possible */
1799 if (ev_at (w) < ev_rt_now)
1800 ev_at (w) = ev_rt_now;
1801 }
1802
1803 ANHE_at_cache (periodics [HEAP0]);
1804 downheap (periodics, periodiccnt, HEAP0);
1805 }
1806 else
1807 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1808
1809 EV_FREQUENT_CHECK;
1810 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2905 feed_reverse_done (EV_A_ EV_PERIODIC);
1811 } 2906 }
1812} 2907}
1813 2908
2909/* simply recalculate all periodics */
2910/* TODO: maybe ensure that at least one event happens when jumping forward? */
1814static void noinline 2911static void noinline ecb_cold
1815periodics_reschedule (EV_P) 2912periodics_reschedule (EV_P)
1816{ 2913{
1817 int i; 2914 int i;
1818 2915
1819 /* adjust periodics after time jump */ 2916 /* adjust periodics after time jump */
… …
1822 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2919 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1823 2920
1824 if (w->reschedule_cb) 2921 if (w->reschedule_cb)
1825 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2922 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1826 else if (w->interval) 2923 else if (w->interval)
1827 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2924 periodic_recalc (EV_A_ w);
1828 2925
1829 ANHE_at_cache (periodics [i]); 2926 ANHE_at_cache (periodics [i]);
1830 } 2927 }
1831 2928
1832 reheap (periodics, periodiccnt); 2929 reheap (periodics, periodiccnt);
1833} 2930}
1834#endif 2931#endif
1835 2932
1836void 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
1837time_update (EV_P_ ev_tstamp max_block) 2950time_update (EV_P_ ev_tstamp max_block)
1838{ 2951{
1839 int i;
1840
1841#if EV_USE_MONOTONIC 2952#if EV_USE_MONOTONIC
1842 if (expect_true (have_monotonic)) 2953 if (expect_true (have_monotonic))
1843 { 2954 {
2955 int i;
1844 ev_tstamp odiff = rtmn_diff; 2956 ev_tstamp odiff = rtmn_diff;
1845 2957
1846 mn_now = get_clock (); 2958 mn_now = get_clock ();
1847 2959
1848 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2960 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1864 * 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
1865 * in the unlikely event of having been preempted here. 2977 * in the unlikely event of having been preempted here.
1866 */ 2978 */
1867 for (i = 4; --i; ) 2979 for (i = 4; --i; )
1868 { 2980 {
2981 ev_tstamp diff;
1869 rtmn_diff = ev_rt_now - mn_now; 2982 rtmn_diff = ev_rt_now - mn_now;
1870 2983
2984 diff = odiff - rtmn_diff;
2985
1871 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2986 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1872 return; /* all is well */ 2987 return; /* all is well */
1873 2988
1874 ev_rt_now = ev_time (); 2989 ev_rt_now = ev_time ();
1875 mn_now = get_clock (); 2990 mn_now = get_clock ();
1876 now_floor = mn_now; 2991 now_floor = mn_now;
1877 } 2992 }
1878 2993
2994 /* no timer adjustment, as the monotonic clock doesn't jump */
2995 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1879# if EV_PERIODIC_ENABLE 2996# if EV_PERIODIC_ENABLE
1880 periodics_reschedule (EV_A); 2997 periodics_reschedule (EV_A);
1881# endif 2998# endif
1882 /* no timer adjustment, as the monotonic clock doesn't jump */
1883 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1884 } 2999 }
1885 else 3000 else
1886#endif 3001#endif
1887 { 3002 {
1888 ev_rt_now = ev_time (); 3003 ev_rt_now = ev_time ();
1889 3004
1890 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))
1891 { 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);
1892#if EV_PERIODIC_ENABLE 3009#if EV_PERIODIC_ENABLE
1893 periodics_reschedule (EV_A); 3010 periodics_reschedule (EV_A);
1894#endif 3011#endif
1895 /* adjust timers. this is easy, as the offset is the same for all of them */
1896 for (i = 0; i < timercnt; ++i)
1897 {
1898 ANHE *he = timers + i + HEAP0;
1899 ANHE_w (*he)->at += ev_rt_now - mn_now;
1900 ANHE_at_cache (*he);
1901 }
1902 } 3012 }
1903 3013
1904 mn_now = ev_rt_now; 3014 mn_now = ev_rt_now;
1905 } 3015 }
1906} 3016}
1907 3017
1908void 3018int
1909ev_ref (EV_P)
1910{
1911 ++activecnt;
1912}
1913
1914void
1915ev_unref (EV_P)
1916{
1917 --activecnt;
1918}
1919
1920void
1921ev_now_update (EV_P)
1922{
1923 time_update (EV_A_ 1e100);
1924}
1925
1926static int loop_done;
1927
1928void
1929ev_loop (EV_P_ int flags) 3019ev_run (EV_P_ int flags)
1930{ 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
1931 loop_done = EVUNLOOP_CANCEL; 3027 loop_done = EVBREAK_CANCEL;
1932 3028
1933 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 */
1934 3030
1935 do 3031 do
1936 { 3032 {
1937#if EV_VERIFY >= 2 3033#if EV_VERIFY >= 2
1938 ev_loop_verify (EV_A); 3034 ev_verify (EV_A);
1939#endif 3035#endif
1940 3036
1941#ifndef _WIN32 3037#ifndef _WIN32
1942 if (expect_false (curpid)) /* penalise the forking check even more */ 3038 if (expect_false (curpid)) /* penalise the forking check even more */
1943 if (expect_false (getpid () != curpid)) 3039 if (expect_false (getpid () != curpid))
… …
1951 /* we might have forked, so queue fork handlers */ 3047 /* we might have forked, so queue fork handlers */
1952 if (expect_false (postfork)) 3048 if (expect_false (postfork))
1953 if (forkcnt) 3049 if (forkcnt)
1954 { 3050 {
1955 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 3051 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1956 call_pending (EV_A); 3052 EV_INVOKE_PENDING;
1957 } 3053 }
1958#endif 3054#endif
1959 3055
3056#if EV_PREPARE_ENABLE
1960 /* queue prepare watchers (and execute them) */ 3057 /* queue prepare watchers (and execute them) */
1961 if (expect_false (preparecnt)) 3058 if (expect_false (preparecnt))
1962 { 3059 {
1963 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 3060 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1964 call_pending (EV_A); 3061 EV_INVOKE_PENDING;
1965 } 3062 }
3063#endif
1966 3064
1967 if (expect_false (!activecnt)) 3065 if (expect_false (loop_done))
1968 break; 3066 break;
1969 3067
1970 /* we might have forked, so reify kernel state if necessary */ 3068 /* we might have forked, so reify kernel state if necessary */
1971 if (expect_false (postfork)) 3069 if (expect_false (postfork))
1972 loop_fork (EV_A); 3070 loop_fork (EV_A);
… …
1977 /* calculate blocking time */ 3075 /* calculate blocking time */
1978 { 3076 {
1979 ev_tstamp waittime = 0.; 3077 ev_tstamp waittime = 0.;
1980 ev_tstamp sleeptime = 0.; 3078 ev_tstamp sleeptime = 0.;
1981 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
1982 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3091 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1983 { 3092 {
1984 /* update time to cancel out callback processing overhead */
1985 time_update (EV_A_ 1e100);
1986
1987 waittime = MAX_BLOCKTIME; 3093 waittime = MAX_BLOCKTIME;
1988 3094
1989 if (timercnt) 3095 if (timercnt)
1990 { 3096 {
1991 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3097 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1992 if (waittime > to) waittime = to; 3098 if (waittime > to) waittime = to;
1993 } 3099 }
1994 3100
1995#if EV_PERIODIC_ENABLE 3101#if EV_PERIODIC_ENABLE
1996 if (periodiccnt) 3102 if (periodiccnt)
1997 { 3103 {
1998 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3104 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1999 if (waittime > to) waittime = to; 3105 if (waittime > to) waittime = to;
2000 } 3106 }
2001#endif 3107#endif
2002 3108
3109 /* don't let timeouts decrease the waittime below timeout_blocktime */
2003 if (expect_false (waittime < timeout_blocktime)) 3110 if (expect_false (waittime < timeout_blocktime))
2004 waittime = timeout_blocktime; 3111 waittime = timeout_blocktime;
2005 3112
2006 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;
2007 3117
3118 /* extra check because io_blocktime is commonly 0 */
2008 if (expect_true (sleeptime > io_blocktime)) 3119 if (expect_false (io_blocktime))
2009 sleeptime = io_blocktime;
2010
2011 if (sleeptime)
2012 { 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 {
2013 ev_sleep (sleeptime); 3128 ev_sleep (sleeptime);
2014 waittime -= sleeptime; 3129 waittime -= sleeptime;
3130 }
2015 } 3131 }
2016 } 3132 }
2017 3133
3134#if EV_FEATURE_API
2018 ++loop_count; 3135 ++loop_count;
3136#endif
3137 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2019 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
2020 3150
2021 /* update ev_rt_now, do magic */ 3151 /* update ev_rt_now, do magic */
2022 time_update (EV_A_ waittime + sleeptime); 3152 time_update (EV_A_ waittime + sleeptime);
2023 } 3153 }
2024 3154
… …
2031#if EV_IDLE_ENABLE 3161#if EV_IDLE_ENABLE
2032 /* queue idle watchers unless other events are pending */ 3162 /* queue idle watchers unless other events are pending */
2033 idle_reify (EV_A); 3163 idle_reify (EV_A);
2034#endif 3164#endif
2035 3165
3166#if EV_CHECK_ENABLE
2036 /* queue check watchers, to be executed first */ 3167 /* queue check watchers, to be executed first */
2037 if (expect_false (checkcnt)) 3168 if (expect_false (checkcnt))
2038 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3169 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3170#endif
2039 3171
2040 call_pending (EV_A); 3172 EV_INVOKE_PENDING;
2041 } 3173 }
2042 while (expect_true ( 3174 while (expect_true (
2043 activecnt 3175 activecnt
2044 && !loop_done 3176 && !loop_done
2045 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3177 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2046 )); 3178 ));
2047 3179
2048 if (loop_done == EVUNLOOP_ONE) 3180 if (loop_done == EVBREAK_ONE)
2049 loop_done = EVUNLOOP_CANCEL; 3181 loop_done = EVBREAK_CANCEL;
3182
3183#if EV_FEATURE_API
3184 --loop_depth;
3185#endif
3186
3187 return activecnt;
2050} 3188}
2051 3189
2052void 3190void
2053ev_unloop (EV_P_ int how) 3191ev_break (EV_P_ int how) EV_THROW
2054{ 3192{
2055 loop_done = how; 3193 loop_done = how;
2056} 3194}
2057 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
2058/*****************************************************************************/ 3233/*****************************************************************************/
3234/* singly-linked list management, used when the expected list length is short */
2059 3235
2060void inline_size 3236inline_size void
2061wlist_add (WL *head, WL elem) 3237wlist_add (WL *head, WL elem)
2062{ 3238{
2063 elem->next = *head; 3239 elem->next = *head;
2064 *head = elem; 3240 *head = elem;
2065} 3241}
2066 3242
2067void inline_size 3243inline_size void
2068wlist_del (WL *head, WL elem) 3244wlist_del (WL *head, WL elem)
2069{ 3245{
2070 while (*head) 3246 while (*head)
2071 { 3247 {
2072 if (*head == elem) 3248 if (expect_true (*head == elem))
2073 { 3249 {
2074 *head = elem->next; 3250 *head = elem->next;
2075 return; 3251 break;
2076 } 3252 }
2077 3253
2078 head = &(*head)->next; 3254 head = &(*head)->next;
2079 } 3255 }
2080} 3256}
2081 3257
2082void inline_speed 3258/* internal, faster, version of ev_clear_pending */
3259inline_speed void
2083clear_pending (EV_P_ W w) 3260clear_pending (EV_P_ W w)
2084{ 3261{
2085 if (w->pending) 3262 if (w->pending)
2086 { 3263 {
2087 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3264 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2088 w->pending = 0; 3265 w->pending = 0;
2089 } 3266 }
2090} 3267}
2091 3268
2092int 3269int
2093ev_clear_pending (EV_P_ void *w) 3270ev_clear_pending (EV_P_ void *w) EV_THROW
2094{ 3271{
2095 W w_ = (W)w; 3272 W w_ = (W)w;
2096 int pending = w_->pending; 3273 int pending = w_->pending;
2097 3274
2098 if (expect_true (pending)) 3275 if (expect_true (pending))
2099 { 3276 {
2100 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3277 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3278 p->w = (W)&pending_w;
2101 w_->pending = 0; 3279 w_->pending = 0;
2102 p->w = 0;
2103 return p->events; 3280 return p->events;
2104 } 3281 }
2105 else 3282 else
2106 return 0; 3283 return 0;
2107} 3284}
2108 3285
2109void inline_size 3286inline_size void
2110pri_adjust (EV_P_ W w) 3287pri_adjust (EV_P_ W w)
2111{ 3288{
2112 int pri = w->priority; 3289 int pri = ev_priority (w);
2113 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3290 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2114 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3291 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2115 w->priority = pri; 3292 ev_set_priority (w, pri);
2116} 3293}
2117 3294
2118void inline_speed 3295inline_speed void
2119ev_start (EV_P_ W w, int active) 3296ev_start (EV_P_ W w, int active)
2120{ 3297{
2121 pri_adjust (EV_A_ w); 3298 pri_adjust (EV_A_ w);
2122 w->active = active; 3299 w->active = active;
2123 ev_ref (EV_A); 3300 ev_ref (EV_A);
2124} 3301}
2125 3302
2126void inline_size 3303inline_size void
2127ev_stop (EV_P_ W w) 3304ev_stop (EV_P_ W w)
2128{ 3305{
2129 ev_unref (EV_A); 3306 ev_unref (EV_A);
2130 w->active = 0; 3307 w->active = 0;
2131} 3308}
2132 3309
2133/*****************************************************************************/ 3310/*****************************************************************************/
2134 3311
2135void noinline 3312void noinline
2136ev_io_start (EV_P_ ev_io *w) 3313ev_io_start (EV_P_ ev_io *w) EV_THROW
2137{ 3314{
2138 int fd = w->fd; 3315 int fd = w->fd;
2139 3316
2140 if (expect_false (ev_is_active (w))) 3317 if (expect_false (ev_is_active (w)))
2141 return; 3318 return;
2142 3319
2143 assert (("ev_io_start called with negative fd", fd >= 0)); 3320 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3321 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2144 3322
2145 EV_FREQUENT_CHECK; 3323 EV_FREQUENT_CHECK;
2146 3324
2147 ev_start (EV_A_ (W)w, 1); 3325 ev_start (EV_A_ (W)w, 1);
2148 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 3326 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2149 wlist_add (&anfds[fd].head, (WL)w); 3327 wlist_add (&anfds[fd].head, (WL)w);
2150 3328
3329 /* common bug, apparently */
3330 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3331
2151 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 3332 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2152 w->events &= ~EV_IOFDSET; 3333 w->events &= ~EV__IOFDSET;
2153 3334
2154 EV_FREQUENT_CHECK; 3335 EV_FREQUENT_CHECK;
2155} 3336}
2156 3337
2157void noinline 3338void noinline
2158ev_io_stop (EV_P_ ev_io *w) 3339ev_io_stop (EV_P_ ev_io *w) EV_THROW
2159{ 3340{
2160 clear_pending (EV_A_ (W)w); 3341 clear_pending (EV_A_ (W)w);
2161 if (expect_false (!ev_is_active (w))) 3342 if (expect_false (!ev_is_active (w)))
2162 return; 3343 return;
2163 3344
2164 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));
2165 3346
2166 EV_FREQUENT_CHECK; 3347 EV_FREQUENT_CHECK;
2167 3348
2168 wlist_del (&anfds[w->fd].head, (WL)w); 3349 wlist_del (&anfds[w->fd].head, (WL)w);
2169 ev_stop (EV_A_ (W)w); 3350 ev_stop (EV_A_ (W)w);
2170 3351
2171 fd_change (EV_A_ w->fd, 1); 3352 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2172 3353
2173 EV_FREQUENT_CHECK; 3354 EV_FREQUENT_CHECK;
2174} 3355}
2175 3356
2176void noinline 3357void noinline
2177ev_timer_start (EV_P_ ev_timer *w) 3358ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2178{ 3359{
2179 if (expect_false (ev_is_active (w))) 3360 if (expect_false (ev_is_active (w)))
2180 return; 3361 return;
2181 3362
2182 ev_at (w) += mn_now; 3363 ev_at (w) += mn_now;
2183 3364
2184 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.));
2185 3366
2186 EV_FREQUENT_CHECK; 3367 EV_FREQUENT_CHECK;
2187 3368
2188 ++timercnt; 3369 ++timercnt;
2189 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3370 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2192 ANHE_at_cache (timers [ev_active (w)]); 3373 ANHE_at_cache (timers [ev_active (w)]);
2193 upheap (timers, ev_active (w)); 3374 upheap (timers, ev_active (w));
2194 3375
2195 EV_FREQUENT_CHECK; 3376 EV_FREQUENT_CHECK;
2196 3377
2197 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3378 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2198} 3379}
2199 3380
2200void noinline 3381void noinline
2201ev_timer_stop (EV_P_ ev_timer *w) 3382ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2202{ 3383{
2203 clear_pending (EV_A_ (W)w); 3384 clear_pending (EV_A_ (W)w);
2204 if (expect_false (!ev_is_active (w))) 3385 if (expect_false (!ev_is_active (w)))
2205 return; 3386 return;
2206 3387
2207 EV_FREQUENT_CHECK; 3388 EV_FREQUENT_CHECK;
2208 3389
2209 { 3390 {
2210 int active = ev_active (w); 3391 int active = ev_active (w);
2211 3392
2212 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 3393 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2213 3394
2214 --timercnt; 3395 --timercnt;
2215 3396
2216 if (expect_true (active < timercnt + HEAP0)) 3397 if (expect_true (active < timercnt + HEAP0))
2217 { 3398 {
2218 timers [active] = timers [timercnt + HEAP0]; 3399 timers [active] = timers [timercnt + HEAP0];
2219 adjustheap (timers, timercnt, active); 3400 adjustheap (timers, timercnt, active);
2220 } 3401 }
2221 } 3402 }
2222 3403
2223 EV_FREQUENT_CHECK;
2224
2225 ev_at (w) -= mn_now; 3404 ev_at (w) -= mn_now;
2226 3405
2227 ev_stop (EV_A_ (W)w); 3406 ev_stop (EV_A_ (W)w);
3407
3408 EV_FREQUENT_CHECK;
2228} 3409}
2229 3410
2230void noinline 3411void noinline
2231ev_timer_again (EV_P_ ev_timer *w) 3412ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2232{ 3413{
2233 EV_FREQUENT_CHECK; 3414 EV_FREQUENT_CHECK;
3415
3416 clear_pending (EV_A_ (W)w);
2234 3417
2235 if (ev_is_active (w)) 3418 if (ev_is_active (w))
2236 { 3419 {
2237 if (w->repeat) 3420 if (w->repeat)
2238 { 3421 {
… …
2250 } 3433 }
2251 3434
2252 EV_FREQUENT_CHECK; 3435 EV_FREQUENT_CHECK;
2253} 3436}
2254 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
2255#if EV_PERIODIC_ENABLE 3444#if EV_PERIODIC_ENABLE
2256void noinline 3445void noinline
2257ev_periodic_start (EV_P_ ev_periodic *w) 3446ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2258{ 3447{
2259 if (expect_false (ev_is_active (w))) 3448 if (expect_false (ev_is_active (w)))
2260 return; 3449 return;
2261 3450
2262 if (w->reschedule_cb) 3451 if (w->reschedule_cb)
2263 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3452 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2264 else if (w->interval) 3453 else if (w->interval)
2265 { 3454 {
2266 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.));
2267 /* this formula differs from the one in periodic_reify because we do not always round up */ 3456 periodic_recalc (EV_A_ w);
2268 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2269 } 3457 }
2270 else 3458 else
2271 ev_at (w) = w->offset; 3459 ev_at (w) = w->offset;
2272 3460
2273 EV_FREQUENT_CHECK; 3461 EV_FREQUENT_CHECK;
… …
2279 ANHE_at_cache (periodics [ev_active (w)]); 3467 ANHE_at_cache (periodics [ev_active (w)]);
2280 upheap (periodics, ev_active (w)); 3468 upheap (periodics, ev_active (w));
2281 3469
2282 EV_FREQUENT_CHECK; 3470 EV_FREQUENT_CHECK;
2283 3471
2284 /*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));*/
2285} 3473}
2286 3474
2287void noinline 3475void noinline
2288ev_periodic_stop (EV_P_ ev_periodic *w) 3476ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2289{ 3477{
2290 clear_pending (EV_A_ (W)w); 3478 clear_pending (EV_A_ (W)w);
2291 if (expect_false (!ev_is_active (w))) 3479 if (expect_false (!ev_is_active (w)))
2292 return; 3480 return;
2293 3481
2294 EV_FREQUENT_CHECK; 3482 EV_FREQUENT_CHECK;
2295 3483
2296 { 3484 {
2297 int active = ev_active (w); 3485 int active = ev_active (w);
2298 3486
2299 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 3487 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2300 3488
2301 --periodiccnt; 3489 --periodiccnt;
2302 3490
2303 if (expect_true (active < periodiccnt + HEAP0)) 3491 if (expect_true (active < periodiccnt + HEAP0))
2304 { 3492 {
2305 periodics [active] = periodics [periodiccnt + HEAP0]; 3493 periodics [active] = periodics [periodiccnt + HEAP0];
2306 adjustheap (periodics, periodiccnt, active); 3494 adjustheap (periodics, periodiccnt, active);
2307 } 3495 }
2308 } 3496 }
2309 3497
2310 EV_FREQUENT_CHECK;
2311
2312 ev_stop (EV_A_ (W)w); 3498 ev_stop (EV_A_ (W)w);
3499
3500 EV_FREQUENT_CHECK;
2313} 3501}
2314 3502
2315void noinline 3503void noinline
2316ev_periodic_again (EV_P_ ev_periodic *w) 3504ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2317{ 3505{
2318 /* TODO: use adjustheap and recalculation */ 3506 /* TODO: use adjustheap and recalculation */
2319 ev_periodic_stop (EV_A_ w); 3507 ev_periodic_stop (EV_A_ w);
2320 ev_periodic_start (EV_A_ w); 3508 ev_periodic_start (EV_A_ w);
2321} 3509}
… …
2323 3511
2324#ifndef SA_RESTART 3512#ifndef SA_RESTART
2325# define SA_RESTART 0 3513# define SA_RESTART 0
2326#endif 3514#endif
2327 3515
3516#if EV_SIGNAL_ENABLE
3517
2328void noinline 3518void noinline
2329ev_signal_start (EV_P_ ev_signal *w) 3519ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2330{ 3520{
2331#if EV_MULTIPLICITY
2332 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2333#endif
2334 if (expect_false (ev_is_active (w))) 3521 if (expect_false (ev_is_active (w)))
2335 return; 3522 return;
2336 3523
2337 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));
2338 3525
2339 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));
2340 3529
2341 EV_FREQUENT_CHECK; 3530 signals [w->signum - 1].loop = EV_A;
3531#endif
2342 3532
3533 EV_FREQUENT_CHECK;
3534
3535#if EV_USE_SIGNALFD
3536 if (sigfd == -2)
2343 { 3537 {
2344#ifndef _WIN32 3538 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2345 sigset_t full, prev; 3539 if (sigfd < 0 && errno == EINVAL)
2346 sigfillset (&full); 3540 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2347 sigprocmask (SIG_SETMASK, &full, &prev);
2348#endif
2349 3541
2350 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3542 if (sigfd >= 0)
3543 {
3544 fd_intern (sigfd); /* doing it twice will not hurt */
2351 3545
2352#ifndef _WIN32 3546 sigemptyset (&sigfd_set);
2353 sigprocmask (SIG_SETMASK, &prev, 0); 3547
2354#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 }
2355 } 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
2356 3564
2357 ev_start (EV_A_ (W)w, 1); 3565 ev_start (EV_A_ (W)w, 1);
2358 wlist_add (&signals [w->signum - 1].head, (WL)w); 3566 wlist_add (&signals [w->signum - 1].head, (WL)w);
2359 3567
2360 if (!((WL)w)->next) 3568 if (!((WL)w)->next)
3569# if EV_USE_SIGNALFD
3570 if (sigfd < 0) /*TODO*/
3571# endif
2361 { 3572 {
2362#if _WIN32 3573# ifdef _WIN32
3574 evpipe_init (EV_A);
3575
2363 signal (w->signum, ev_sighandler); 3576 signal (w->signum, ev_sighandler);
2364#else 3577# else
2365 struct sigaction sa; 3578 struct sigaction sa;
3579
3580 evpipe_init (EV_A);
3581
2366 sa.sa_handler = ev_sighandler; 3582 sa.sa_handler = ev_sighandler;
2367 sigfillset (&sa.sa_mask); 3583 sigfillset (&sa.sa_mask);
2368 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 */
2369 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 }
2370#endif 3593#endif
2371 } 3594 }
2372 3595
2373 EV_FREQUENT_CHECK; 3596 EV_FREQUENT_CHECK;
2374} 3597}
2375 3598
2376void noinline 3599void noinline
2377ev_signal_stop (EV_P_ ev_signal *w) 3600ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2378{ 3601{
2379 clear_pending (EV_A_ (W)w); 3602 clear_pending (EV_A_ (W)w);
2380 if (expect_false (!ev_is_active (w))) 3603 if (expect_false (!ev_is_active (w)))
2381 return; 3604 return;
2382 3605
… …
2384 3607
2385 wlist_del (&signals [w->signum - 1].head, (WL)w); 3608 wlist_del (&signals [w->signum - 1].head, (WL)w);
2386 ev_stop (EV_A_ (W)w); 3609 ev_stop (EV_A_ (W)w);
2387 3610
2388 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
2389 signal (w->signum, SIG_DFL); 3630 signal (w->signum, SIG_DFL);
3631 }
2390 3632
2391 EV_FREQUENT_CHECK; 3633 EV_FREQUENT_CHECK;
2392} 3634}
3635
3636#endif
3637
3638#if EV_CHILD_ENABLE
2393 3639
2394void 3640void
2395ev_child_start (EV_P_ ev_child *w) 3641ev_child_start (EV_P_ ev_child *w) EV_THROW
2396{ 3642{
2397#if EV_MULTIPLICITY 3643#if EV_MULTIPLICITY
2398 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));
2399#endif 3645#endif
2400 if (expect_false (ev_is_active (w))) 3646 if (expect_false (ev_is_active (w)))
2401 return; 3647 return;
2402 3648
2403 EV_FREQUENT_CHECK; 3649 EV_FREQUENT_CHECK;
2404 3650
2405 ev_start (EV_A_ (W)w, 1); 3651 ev_start (EV_A_ (W)w, 1);
2406 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3652 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2407 3653
2408 EV_FREQUENT_CHECK; 3654 EV_FREQUENT_CHECK;
2409} 3655}
2410 3656
2411void 3657void
2412ev_child_stop (EV_P_ ev_child *w) 3658ev_child_stop (EV_P_ ev_child *w) EV_THROW
2413{ 3659{
2414 clear_pending (EV_A_ (W)w); 3660 clear_pending (EV_A_ (W)w);
2415 if (expect_false (!ev_is_active (w))) 3661 if (expect_false (!ev_is_active (w)))
2416 return; 3662 return;
2417 3663
2418 EV_FREQUENT_CHECK; 3664 EV_FREQUENT_CHECK;
2419 3665
2420 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3666 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2421 ev_stop (EV_A_ (W)w); 3667 ev_stop (EV_A_ (W)w);
2422 3668
2423 EV_FREQUENT_CHECK; 3669 EV_FREQUENT_CHECK;
2424} 3670}
3671
3672#endif
2425 3673
2426#if EV_STAT_ENABLE 3674#if EV_STAT_ENABLE
2427 3675
2428# ifdef _WIN32 3676# ifdef _WIN32
2429# undef lstat 3677# undef lstat
2430# define lstat(a,b) _stati64 (a,b) 3678# define lstat(a,b) _stati64 (a,b)
2431# endif 3679# endif
2432 3680
2433#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 */
2434#define MIN_STAT_INTERVAL 0.1074891 3683#define MIN_STAT_INTERVAL 0.1074891
2435 3684
2436static 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);
2437 3686
2438#if EV_USE_INOTIFY 3687#if EV_USE_INOTIFY
2439# 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)
2440 3691
2441static void noinline 3692static void noinline
2442infy_add (EV_P_ ev_stat *w) 3693infy_add (EV_P_ ev_stat *w)
2443{ 3694{
2444 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);
2445 3696
2446 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 */
2447 { 3717 }
2448 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;
2449 3722
2450 /* monitor some parent directory for speedup hints */ 3723 /* if path is not there, monitor some parent directory for speedup hints */
2451 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3724 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2452 /* but an efficiency issue only */ 3725 /* but an efficiency issue only */
2453 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3726 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2454 { 3727 {
2455 char path [4096]; 3728 char path [4096];
2456 strcpy (path, w->path); 3729 strcpy (path, w->path);
… …
2460 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3733 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2461 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3734 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2462 3735
2463 char *pend = strrchr (path, '/'); 3736 char *pend = strrchr (path, '/');
2464 3737
2465 if (!pend) 3738 if (!pend || pend == path)
2466 break; /* whoops, no '/', complain to your admin */ 3739 break;
2467 3740
2468 *pend = 0; 3741 *pend = 0;
2469 w->wd = inotify_add_watch (fs_fd, path, mask); 3742 w->wd = inotify_add_watch (fs_fd, path, mask);
2470 } 3743 }
2471 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3744 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2472 } 3745 }
2473 } 3746 }
2474 else
2475 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2476 3747
2477 if (w->wd >= 0) 3748 if (w->wd >= 0)
2478 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);
2479} 3755}
2480 3756
2481static void noinline 3757static void noinline
2482infy_del (EV_P_ ev_stat *w) 3758infy_del (EV_P_ ev_stat *w)
2483{ 3759{
… …
2486 3762
2487 if (wd < 0) 3763 if (wd < 0)
2488 return; 3764 return;
2489 3765
2490 w->wd = -2; 3766 w->wd = -2;
2491 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3767 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2492 wlist_del (&fs_hash [slot].head, (WL)w); 3768 wlist_del (&fs_hash [slot].head, (WL)w);
2493 3769
2494 /* remove this watcher, if others are watching it, they will rearm */ 3770 /* remove this watcher, if others are watching it, they will rearm */
2495 inotify_rm_watch (fs_fd, wd); 3771 inotify_rm_watch (fs_fd, wd);
2496} 3772}
… …
2498static void noinline 3774static void noinline
2499infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3775infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2500{ 3776{
2501 if (slot < 0) 3777 if (slot < 0)
2502 /* overflow, need to check for all hash slots */ 3778 /* overflow, need to check for all hash slots */
2503 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3779 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2504 infy_wd (EV_A_ slot, wd, ev); 3780 infy_wd (EV_A_ slot, wd, ev);
2505 else 3781 else
2506 { 3782 {
2507 WL w_; 3783 WL w_;
2508 3784
2509 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3785 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2510 { 3786 {
2511 ev_stat *w = (ev_stat *)w_; 3787 ev_stat *w = (ev_stat *)w_;
2512 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 */
2513 3789
2514 if (w->wd == wd || wd == -1) 3790 if (w->wd == wd || wd == -1)
2515 { 3791 {
2516 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3792 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2517 { 3793 {
3794 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2518 w->wd = -1; 3795 w->wd = -1;
2519 infy_add (EV_A_ w); /* re-add, no matter what */ 3796 infy_add (EV_A_ w); /* re-add, no matter what */
2520 } 3797 }
2521 3798
2522 stat_timer_cb (EV_A_ &w->timer, 0); 3799 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2527 3804
2528static void 3805static void
2529infy_cb (EV_P_ ev_io *w, int revents) 3806infy_cb (EV_P_ ev_io *w, int revents)
2530{ 3807{
2531 char buf [EV_INOTIFY_BUFSIZE]; 3808 char buf [EV_INOTIFY_BUFSIZE];
2532 struct inotify_event *ev = (struct inotify_event *)buf;
2533 int ofs; 3809 int ofs;
2534 int len = read (fs_fd, buf, sizeof (buf)); 3810 int len = read (fs_fd, buf, sizeof (buf));
2535 3811
2536 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);
2537 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 }
2538} 3818}
2539 3819
2540void inline_size 3820inline_size void ecb_cold
2541infy_init (EV_P) 3821ev_check_2625 (EV_P)
2542{ 3822{
2543 if (fs_fd != -2)
2544 return;
2545
2546 /* kernels < 2.6.25 are borked 3823 /* kernels < 2.6.25 are borked
2547 * 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
2548 */ 3825 */
2549 { 3826 if (ev_linux_version () < 0x020619)
2550 struct utsname buf; 3827 return;
2551 int major, minor, micro;
2552 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
2553 fs_fd = -1; 3849 fs_fd = -1;
2554 3850
2555 if (uname (&buf)) 3851 ev_check_2625 (EV_A);
2556 return;
2557 3852
2558 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2559 return;
2560
2561 if (major < 2
2562 || (major == 2 && minor < 6)
2563 || (major == 2 && minor == 6 && micro < 25))
2564 return;
2565 }
2566
2567 fs_fd = inotify_init (); 3853 fs_fd = infy_newfd ();
2568 3854
2569 if (fs_fd >= 0) 3855 if (fs_fd >= 0)
2570 { 3856 {
3857 fd_intern (fs_fd);
2571 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3858 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2572 ev_set_priority (&fs_w, EV_MAXPRI); 3859 ev_set_priority (&fs_w, EV_MAXPRI);
2573 ev_io_start (EV_A_ &fs_w); 3860 ev_io_start (EV_A_ &fs_w);
3861 ev_unref (EV_A);
2574 } 3862 }
2575} 3863}
2576 3864
2577void inline_size 3865inline_size void
2578infy_fork (EV_P) 3866infy_fork (EV_P)
2579{ 3867{
2580 int slot; 3868 int slot;
2581 3869
2582 if (fs_fd < 0) 3870 if (fs_fd < 0)
2583 return; 3871 return;
2584 3872
3873 ev_ref (EV_A);
3874 ev_io_stop (EV_A_ &fs_w);
2585 close (fs_fd); 3875 close (fs_fd);
2586 fs_fd = inotify_init (); 3876 fs_fd = infy_newfd ();
2587 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
2588 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3886 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2589 { 3887 {
2590 WL w_ = fs_hash [slot].head; 3888 WL w_ = fs_hash [slot].head;
2591 fs_hash [slot].head = 0; 3889 fs_hash [slot].head = 0;
2592 3890
2593 while (w_) 3891 while (w_)
… …
2598 w->wd = -1; 3896 w->wd = -1;
2599 3897
2600 if (fs_fd >= 0) 3898 if (fs_fd >= 0)
2601 infy_add (EV_A_ w); /* re-add, no matter what */ 3899 infy_add (EV_A_ w); /* re-add, no matter what */
2602 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);
2603 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 }
2604 } 3907 }
2605 } 3908 }
2606} 3909}
2607 3910
2608#endif 3911#endif
… …
2612#else 3915#else
2613# define EV_LSTAT(p,b) lstat (p, b) 3916# define EV_LSTAT(p,b) lstat (p, b)
2614#endif 3917#endif
2615 3918
2616void 3919void
2617ev_stat_stat (EV_P_ ev_stat *w) 3920ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2618{ 3921{
2619 if (lstat (w->path, &w->attr) < 0) 3922 if (lstat (w->path, &w->attr) < 0)
2620 w->attr.st_nlink = 0; 3923 w->attr.st_nlink = 0;
2621 else if (!w->attr.st_nlink) 3924 else if (!w->attr.st_nlink)
2622 w->attr.st_nlink = 1; 3925 w->attr.st_nlink = 1;
… …
2625static void noinline 3928static void noinline
2626stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3929stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2627{ 3930{
2628 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3931 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2629 3932
2630 /* we copy this here each the time so that */ 3933 ev_statdata prev = w->attr;
2631 /* prev has the old value when the callback gets invoked */
2632 w->prev = w->attr;
2633 ev_stat_stat (EV_A_ w); 3934 ev_stat_stat (EV_A_ w);
2634 3935
2635 /* 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 */
2636 if ( 3937 if (
2637 w->prev.st_dev != w->attr.st_dev 3938 prev.st_dev != w->attr.st_dev
2638 || w->prev.st_ino != w->attr.st_ino 3939 || prev.st_ino != w->attr.st_ino
2639 || w->prev.st_mode != w->attr.st_mode 3940 || prev.st_mode != w->attr.st_mode
2640 || w->prev.st_nlink != w->attr.st_nlink 3941 || prev.st_nlink != w->attr.st_nlink
2641 || w->prev.st_uid != w->attr.st_uid 3942 || prev.st_uid != w->attr.st_uid
2642 || w->prev.st_gid != w->attr.st_gid 3943 || prev.st_gid != w->attr.st_gid
2643 || w->prev.st_rdev != w->attr.st_rdev 3944 || prev.st_rdev != w->attr.st_rdev
2644 || w->prev.st_size != w->attr.st_size 3945 || prev.st_size != w->attr.st_size
2645 || w->prev.st_atime != w->attr.st_atime 3946 || prev.st_atime != w->attr.st_atime
2646 || w->prev.st_mtime != w->attr.st_mtime 3947 || prev.st_mtime != w->attr.st_mtime
2647 || w->prev.st_ctime != w->attr.st_ctime 3948 || prev.st_ctime != w->attr.st_ctime
2648 ) { 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
2649 #if EV_USE_INOTIFY 3955 #if EV_USE_INOTIFY
2650 if (fs_fd >= 0) 3956 if (fs_fd >= 0)
2651 { 3957 {
2652 infy_del (EV_A_ w); 3958 infy_del (EV_A_ w);
2653 infy_add (EV_A_ w); 3959 infy_add (EV_A_ w);
… …
2658 ev_feed_event (EV_A_ w, EV_STAT); 3964 ev_feed_event (EV_A_ w, EV_STAT);
2659 } 3965 }
2660} 3966}
2661 3967
2662void 3968void
2663ev_stat_start (EV_P_ ev_stat *w) 3969ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2664{ 3970{
2665 if (expect_false (ev_is_active (w))) 3971 if (expect_false (ev_is_active (w)))
2666 return; 3972 return;
2667 3973
2668 /* since we use memcmp, we need to clear any padding data etc. */
2669 memset (&w->prev, 0, sizeof (ev_statdata));
2670 memset (&w->attr, 0, sizeof (ev_statdata));
2671
2672 ev_stat_stat (EV_A_ w); 3974 ev_stat_stat (EV_A_ w);
2673 3975
3976 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2674 if (w->interval < MIN_STAT_INTERVAL) 3977 w->interval = MIN_STAT_INTERVAL;
2675 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2676 3978
2677 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);
2678 ev_set_priority (&w->timer, ev_priority (w)); 3980 ev_set_priority (&w->timer, ev_priority (w));
2679 3981
2680#if EV_USE_INOTIFY 3982#if EV_USE_INOTIFY
2681 infy_init (EV_A); 3983 infy_init (EV_A);
2682 3984
2683 if (fs_fd >= 0) 3985 if (fs_fd >= 0)
2684 infy_add (EV_A_ w); 3986 infy_add (EV_A_ w);
2685 else 3987 else
2686#endif 3988#endif
3989 {
2687 ev_timer_start (EV_A_ &w->timer); 3990 ev_timer_again (EV_A_ &w->timer);
3991 ev_unref (EV_A);
3992 }
2688 3993
2689 ev_start (EV_A_ (W)w, 1); 3994 ev_start (EV_A_ (W)w, 1);
2690 3995
2691 EV_FREQUENT_CHECK; 3996 EV_FREQUENT_CHECK;
2692} 3997}
2693 3998
2694void 3999void
2695ev_stat_stop (EV_P_ ev_stat *w) 4000ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2696{ 4001{
2697 clear_pending (EV_A_ (W)w); 4002 clear_pending (EV_A_ (W)w);
2698 if (expect_false (!ev_is_active (w))) 4003 if (expect_false (!ev_is_active (w)))
2699 return; 4004 return;
2700 4005
2701 EV_FREQUENT_CHECK; 4006 EV_FREQUENT_CHECK;
2702 4007
2703#if EV_USE_INOTIFY 4008#if EV_USE_INOTIFY
2704 infy_del (EV_A_ w); 4009 infy_del (EV_A_ w);
2705#endif 4010#endif
4011
4012 if (ev_is_active (&w->timer))
4013 {
4014 ev_ref (EV_A);
2706 ev_timer_stop (EV_A_ &w->timer); 4015 ev_timer_stop (EV_A_ &w->timer);
4016 }
2707 4017
2708 ev_stop (EV_A_ (W)w); 4018 ev_stop (EV_A_ (W)w);
2709 4019
2710 EV_FREQUENT_CHECK; 4020 EV_FREQUENT_CHECK;
2711} 4021}
2712#endif 4022#endif
2713 4023
2714#if EV_IDLE_ENABLE 4024#if EV_IDLE_ENABLE
2715void 4025void
2716ev_idle_start (EV_P_ ev_idle *w) 4026ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2717{ 4027{
2718 if (expect_false (ev_is_active (w))) 4028 if (expect_false (ev_is_active (w)))
2719 return; 4029 return;
2720 4030
2721 pri_adjust (EV_A_ (W)w); 4031 pri_adjust (EV_A_ (W)w);
… …
2734 4044
2735 EV_FREQUENT_CHECK; 4045 EV_FREQUENT_CHECK;
2736} 4046}
2737 4047
2738void 4048void
2739ev_idle_stop (EV_P_ ev_idle *w) 4049ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2740{ 4050{
2741 clear_pending (EV_A_ (W)w); 4051 clear_pending (EV_A_ (W)w);
2742 if (expect_false (!ev_is_active (w))) 4052 if (expect_false (!ev_is_active (w)))
2743 return; 4053 return;
2744 4054
… …
2756 4066
2757 EV_FREQUENT_CHECK; 4067 EV_FREQUENT_CHECK;
2758} 4068}
2759#endif 4069#endif
2760 4070
4071#if EV_PREPARE_ENABLE
2761void 4072void
2762ev_prepare_start (EV_P_ ev_prepare *w) 4073ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2763{ 4074{
2764 if (expect_false (ev_is_active (w))) 4075 if (expect_false (ev_is_active (w)))
2765 return; 4076 return;
2766 4077
2767 EV_FREQUENT_CHECK; 4078 EV_FREQUENT_CHECK;
… …
2772 4083
2773 EV_FREQUENT_CHECK; 4084 EV_FREQUENT_CHECK;
2774} 4085}
2775 4086
2776void 4087void
2777ev_prepare_stop (EV_P_ ev_prepare *w) 4088ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2778{ 4089{
2779 clear_pending (EV_A_ (W)w); 4090 clear_pending (EV_A_ (W)w);
2780 if (expect_false (!ev_is_active (w))) 4091 if (expect_false (!ev_is_active (w)))
2781 return; 4092 return;
2782 4093
… …
2791 4102
2792 ev_stop (EV_A_ (W)w); 4103 ev_stop (EV_A_ (W)w);
2793 4104
2794 EV_FREQUENT_CHECK; 4105 EV_FREQUENT_CHECK;
2795} 4106}
4107#endif
2796 4108
4109#if EV_CHECK_ENABLE
2797void 4110void
2798ev_check_start (EV_P_ ev_check *w) 4111ev_check_start (EV_P_ ev_check *w) EV_THROW
2799{ 4112{
2800 if (expect_false (ev_is_active (w))) 4113 if (expect_false (ev_is_active (w)))
2801 return; 4114 return;
2802 4115
2803 EV_FREQUENT_CHECK; 4116 EV_FREQUENT_CHECK;
… …
2808 4121
2809 EV_FREQUENT_CHECK; 4122 EV_FREQUENT_CHECK;
2810} 4123}
2811 4124
2812void 4125void
2813ev_check_stop (EV_P_ ev_check *w) 4126ev_check_stop (EV_P_ ev_check *w) EV_THROW
2814{ 4127{
2815 clear_pending (EV_A_ (W)w); 4128 clear_pending (EV_A_ (W)w);
2816 if (expect_false (!ev_is_active (w))) 4129 if (expect_false (!ev_is_active (w)))
2817 return; 4130 return;
2818 4131
… …
2827 4140
2828 ev_stop (EV_A_ (W)w); 4141 ev_stop (EV_A_ (W)w);
2829 4142
2830 EV_FREQUENT_CHECK; 4143 EV_FREQUENT_CHECK;
2831} 4144}
4145#endif
2832 4146
2833#if EV_EMBED_ENABLE 4147#if EV_EMBED_ENABLE
2834void noinline 4148void noinline
2835ev_embed_sweep (EV_P_ ev_embed *w) 4149ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2836{ 4150{
2837 ev_loop (w->other, EVLOOP_NONBLOCK); 4151 ev_run (w->other, EVRUN_NOWAIT);
2838} 4152}
2839 4153
2840static void 4154static void
2841embed_io_cb (EV_P_ ev_io *io, int revents) 4155embed_io_cb (EV_P_ ev_io *io, int revents)
2842{ 4156{
2843 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4157 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2844 4158
2845 if (ev_cb (w)) 4159 if (ev_cb (w))
2846 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4160 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2847 else 4161 else
2848 ev_loop (w->other, EVLOOP_NONBLOCK); 4162 ev_run (w->other, EVRUN_NOWAIT);
2849} 4163}
2850 4164
2851static void 4165static void
2852embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4166embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2853{ 4167{
2854 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4168 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2855 4169
2856 { 4170 {
2857 struct ev_loop *loop = w->other; 4171 EV_P = w->other;
2858 4172
2859 while (fdchangecnt) 4173 while (fdchangecnt)
2860 { 4174 {
2861 fd_reify (EV_A); 4175 fd_reify (EV_A);
2862 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4176 ev_run (EV_A_ EVRUN_NOWAIT);
2863 } 4177 }
2864 } 4178 }
2865} 4179}
2866 4180
2867static void 4181static void
2868embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 4182embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2869{ 4183{
2870 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));
2871 4185
4186 ev_embed_stop (EV_A_ w);
4187
2872 { 4188 {
2873 struct ev_loop *loop = w->other; 4189 EV_P = w->other;
2874 4190
2875 ev_loop_fork (EV_A); 4191 ev_loop_fork (EV_A);
4192 ev_run (EV_A_ EVRUN_NOWAIT);
2876 } 4193 }
4194
4195 ev_embed_start (EV_A_ w);
2877} 4196}
2878 4197
2879#if 0 4198#if 0
2880static void 4199static void
2881embed_idle_cb (EV_P_ ev_idle *idle, int revents) 4200embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2883 ev_idle_stop (EV_A_ idle); 4202 ev_idle_stop (EV_A_ idle);
2884} 4203}
2885#endif 4204#endif
2886 4205
2887void 4206void
2888ev_embed_start (EV_P_ ev_embed *w) 4207ev_embed_start (EV_P_ ev_embed *w) EV_THROW
2889{ 4208{
2890 if (expect_false (ev_is_active (w))) 4209 if (expect_false (ev_is_active (w)))
2891 return; 4210 return;
2892 4211
2893 { 4212 {
2894 struct ev_loop *loop = w->other; 4213 EV_P = w->other;
2895 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 ()));
2896 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);
2897 } 4216 }
2898 4217
2899 EV_FREQUENT_CHECK; 4218 EV_FREQUENT_CHECK;
2900 4219
… …
2914 4233
2915 EV_FREQUENT_CHECK; 4234 EV_FREQUENT_CHECK;
2916} 4235}
2917 4236
2918void 4237void
2919ev_embed_stop (EV_P_ ev_embed *w) 4238ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
2920{ 4239{
2921 clear_pending (EV_A_ (W)w); 4240 clear_pending (EV_A_ (W)w);
2922 if (expect_false (!ev_is_active (w))) 4241 if (expect_false (!ev_is_active (w)))
2923 return; 4242 return;
2924 4243
… …
2926 4245
2927 ev_io_stop (EV_A_ &w->io); 4246 ev_io_stop (EV_A_ &w->io);
2928 ev_prepare_stop (EV_A_ &w->prepare); 4247 ev_prepare_stop (EV_A_ &w->prepare);
2929 ev_fork_stop (EV_A_ &w->fork); 4248 ev_fork_stop (EV_A_ &w->fork);
2930 4249
4250 ev_stop (EV_A_ (W)w);
4251
2931 EV_FREQUENT_CHECK; 4252 EV_FREQUENT_CHECK;
2932} 4253}
2933#endif 4254#endif
2934 4255
2935#if EV_FORK_ENABLE 4256#if EV_FORK_ENABLE
2936void 4257void
2937ev_fork_start (EV_P_ ev_fork *w) 4258ev_fork_start (EV_P_ ev_fork *w) EV_THROW
2938{ 4259{
2939 if (expect_false (ev_is_active (w))) 4260 if (expect_false (ev_is_active (w)))
2940 return; 4261 return;
2941 4262
2942 EV_FREQUENT_CHECK; 4263 EV_FREQUENT_CHECK;
… …
2947 4268
2948 EV_FREQUENT_CHECK; 4269 EV_FREQUENT_CHECK;
2949} 4270}
2950 4271
2951void 4272void
2952ev_fork_stop (EV_P_ ev_fork *w) 4273ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
2953{ 4274{
2954 clear_pending (EV_A_ (W)w); 4275 clear_pending (EV_A_ (W)w);
2955 if (expect_false (!ev_is_active (w))) 4276 if (expect_false (!ev_is_active (w)))
2956 return; 4277 return;
2957 4278
… …
2968 4289
2969 EV_FREQUENT_CHECK; 4290 EV_FREQUENT_CHECK;
2970} 4291}
2971#endif 4292#endif
2972 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
2973#if EV_ASYNC_ENABLE 4335#if EV_ASYNC_ENABLE
2974void 4336void
2975ev_async_start (EV_P_ ev_async *w) 4337ev_async_start (EV_P_ ev_async *w) EV_THROW
2976{ 4338{
2977 if (expect_false (ev_is_active (w))) 4339 if (expect_false (ev_is_active (w)))
2978 return; 4340 return;
4341
4342 w->sent = 0;
2979 4343
2980 evpipe_init (EV_A); 4344 evpipe_init (EV_A);
2981 4345
2982 EV_FREQUENT_CHECK; 4346 EV_FREQUENT_CHECK;
2983 4347
… …
2987 4351
2988 EV_FREQUENT_CHECK; 4352 EV_FREQUENT_CHECK;
2989} 4353}
2990 4354
2991void 4355void
2992ev_async_stop (EV_P_ ev_async *w) 4356ev_async_stop (EV_P_ ev_async *w) EV_THROW
2993{ 4357{
2994 clear_pending (EV_A_ (W)w); 4358 clear_pending (EV_A_ (W)w);
2995 if (expect_false (!ev_is_active (w))) 4359 if (expect_false (!ev_is_active (w)))
2996 return; 4360 return;
2997 4361
… …
3008 4372
3009 EV_FREQUENT_CHECK; 4373 EV_FREQUENT_CHECK;
3010} 4374}
3011 4375
3012void 4376void
3013ev_async_send (EV_P_ ev_async *w) 4377ev_async_send (EV_P_ ev_async *w) EV_THROW
3014{ 4378{
3015 w->sent = 1; 4379 w->sent = 1;
3016 evpipe_write (EV_A_ &gotasync); 4380 evpipe_write (EV_A_ &async_pending);
3017} 4381}
3018#endif 4382#endif
3019 4383
3020/*****************************************************************************/ 4384/*****************************************************************************/
3021 4385
… …
3055 4419
3056 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));
3057} 4421}
3058 4422
3059void 4423void
3060ev_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
3061{ 4425{
3062 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));
3063 4427
3064 if (expect_false (!once)) 4428 if (expect_false (!once))
3065 { 4429 {
3066 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4430 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3067 return; 4431 return;
3068 } 4432 }
3069 4433
3070 once->cb = cb; 4434 once->cb = cb;
3071 once->arg = arg; 4435 once->arg = arg;
… …
3083 ev_timer_set (&once->to, timeout, 0.); 4447 ev_timer_set (&once->to, timeout, 0.);
3084 ev_timer_start (EV_A_ &once->to); 4448 ev_timer_start (EV_A_ &once->to);
3085 } 4449 }
3086} 4450}
3087 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
3088#if EV_MULTIPLICITY 4568#if EV_MULTIPLICITY
3089 #include "ev_wrap.h" 4569 #include "ev_wrap.h"
3090#endif 4570#endif
3091 4571
3092#ifdef __cplusplus
3093}
3094#endif
3095

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