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Comparing libev/ev.c (file contents):
Revision 1.266 by root, Fri Oct 24 08:15:33 2008 UTC vs.
Revision 1.393 by root, Thu Aug 4 14:47:48 2011 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 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"
152#endif 186#endif
187
188EV_CPP(extern "C" {)
153 189
154#ifndef _WIN32 190#ifndef _WIN32
155# include <sys/time.h> 191# include <sys/time.h>
156# include <sys/wait.h> 192# include <sys/wait.h>
157# include <unistd.h> 193# include <unistd.h>
… …
160# define WIN32_LEAN_AND_MEAN 196# define WIN32_LEAN_AND_MEAN
161# include <windows.h> 197# include <windows.h>
162# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
163# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
164# endif 200# endif
201# undef EV_AVOID_STDIO
165#endif 202#endif
203
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
166 211
167/* this block tries to deduce configuration from header-defined symbols and defaults */ 212/* this block tries to deduce configuration from header-defined symbols and defaults */
213
214/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG)
216/* use what's provided */
217#elif defined (NSIG)
218# define EV_NSIG (NSIG)
219#elif defined(_NSIG)
220# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX)
222# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX)
224# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX)
226# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG)
228# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG)
230# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE)
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig)
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else
236# error "unable to find value for NSIG, please report"
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif
241
242#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0
244#endif
245
246#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else
250# define EV_USE_CLOCK_SYSCALL 0
251# endif
252#endif
168 253
169#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 256# define EV_USE_MONOTONIC EV_FEATURE_OS
172# else 257# else
173# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
174# endif 259# endif
175#endif 260#endif
176 261
177#ifndef EV_USE_REALTIME 262#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 264#endif
180 265
181#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 267# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 268# define EV_USE_NANOSLEEP EV_FEATURE_OS
184# else 269# else
185# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
186# endif 271# endif
187#endif 272#endif
188 273
189#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
190# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
191#endif 276#endif
192 277
193#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
194# ifdef _WIN32 279# ifdef _WIN32
195# define EV_USE_POLL 0 280# define EV_USE_POLL 0
196# else 281# else
197# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
198# endif 283# endif
199#endif 284#endif
200 285
201#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
204# else 289# else
205# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
206# endif 291# endif
207#endif 292#endif
208 293
… …
214# define EV_USE_PORT 0 299# define EV_USE_PORT 0
215#endif 300#endif
216 301
217#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
220# else 305# else
221# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
222# endif 307# endif
223#endif 308#endif
224 309
225#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
226# if EV_MINIMAL 311# 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 312#endif
232 313
233#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
234# if EV_MINIMAL 315# 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 316#endif
240 317
241#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
244# else 321# else
245# define EV_USE_EVENTFD 0 322# define EV_USE_EVENTFD 0
323# endif
324#endif
325
326#ifndef EV_USE_SIGNALFD
327# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
328# define EV_USE_SIGNALFD EV_FEATURE_OS
329# else
330# define EV_USE_SIGNALFD 0
246# endif 331# endif
247#endif 332#endif
248 333
249#if 0 /* debugging */ 334#if 0 /* debugging */
250# define EV_VERIFY 3 335# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 336# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 337# define EV_HEAP_CACHE_AT 1
253#endif 338#endif
254 339
255#ifndef EV_VERIFY 340#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL 341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
257#endif 342#endif
258 343
259#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
261#endif 346#endif
262 347
263#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
264# define EV_HEAP_CACHE_AT !EV_MINIMAL 349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif
351
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h>
356# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1
360# else
361# undef EV_USE_CLOCK_SYSCALL
362# define EV_USE_CLOCK_SYSCALL 0
363# endif
265#endif 364#endif
266 365
267/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 366/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
268 373
269#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
270# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
271# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
272#endif 377#endif
… …
280# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
281# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
282#endif 387#endif
283 388
284#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
285# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
286# include <sys/select.h> 392# include <sys/select.h>
287# endif 393# endif
288#endif 394#endif
289 395
290#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
291# include <sys/utsname.h> 397# include <sys/statfs.h>
292# include <sys/inotify.h> 398# include <sys/inotify.h>
293/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
294# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
295# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
296# define EV_USE_INOTIFY 0 402# define EV_USE_INOTIFY 0
… …
302#endif 408#endif
303 409
304#if EV_USE_EVENTFD 410#if EV_USE_EVENTFD
305/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
306# include <stdint.h> 412# include <stdint.h>
307# ifdef __cplusplus 413# ifndef EFD_NONBLOCK
308extern "C" { 414# define EFD_NONBLOCK O_NONBLOCK
309# endif 415# endif
310int eventfd (unsigned int initval, int flags); 416# ifndef EFD_CLOEXEC
311# ifdef __cplusplus 417# ifdef O_CLOEXEC
312} 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
313# endif 422# endif
423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
424#endif
425
426#if EV_USE_SIGNALFD
427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
428# include <stdint.h>
429# ifndef SFD_NONBLOCK
430# define SFD_NONBLOCK O_NONBLOCK
431# endif
432# ifndef SFD_CLOEXEC
433# ifdef O_CLOEXEC
434# define SFD_CLOEXEC O_CLOEXEC
435# else
436# define SFD_CLOEXEC 02000000
437# endif
438# endif
439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
440
441struct signalfd_siginfo
442{
443 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)];
445};
314#endif 446#endif
315 447
316/**/ 448/**/
317 449
318#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
319# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
320#else 452#else
321# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
322#endif 454#endif
323 455
324/* 456/*
325 * This is used to avoid floating point rounding problems. 457 * 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. 458 * This value is good at least till the year 4000.
330 * Better solutions welcome.
331 */ 459 */
332#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
333 462
334#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 463#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) */ 464#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 */
337 465
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
468
469/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ECB.H BEGIN */
471/*
472 * libecb - http://software.schmorp.de/pkg/libecb
473 *
474 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de>
475 * Copyright (©) 2011 Emanuele Giaquinta
476 * All rights reserved.
477 *
478 * Redistribution and use in source and binary forms, with or without modifica-
479 * tion, are permitted provided that the following conditions are met:
480 *
481 * 1. Redistributions of source code must retain the above copyright notice,
482 * this list of conditions and the following disclaimer.
483 *
484 * 2. Redistributions in binary form must reproduce the above copyright
485 * notice, this list of conditions and the following disclaimer in the
486 * documentation and/or other materials provided with the distribution.
487 *
488 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
489 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
490 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
491 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
492 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
493 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
494 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
495 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
496 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
497 * OF THE POSSIBILITY OF SUCH DAMAGE.
498 */
499
500#ifndef ECB_H
501#define ECB_H
502
503#ifdef _WIN32
504 typedef signed char int8_t;
505 typedef unsigned char uint8_t;
506 typedef signed short int16_t;
507 typedef unsigned short uint16_t;
508 typedef signed int int32_t;
509 typedef unsigned int uint32_t;
338#if __GNUC__ >= 4 510 #if __GNUC__
339# define expect(expr,value) __builtin_expect ((expr),(value)) 511 typedef signed long long int64_t;
340# define noinline __attribute__ ((noinline)) 512 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t;
516 #endif
341#else 517#else
342# define expect(expr,value) (expr) 518 #include <inttypes.h>
343# define noinline
344# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
345# define inline
346# endif 519#endif
520
521/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so.
525 * we try to detect these and simply assume they are not gcc - if they have
526 * an issue with that they should have done it right in the first place.
527 */
528#ifndef ECB_GCC_VERSION
529 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
530 #define ECB_GCC_VERSION(major,minor) 0
531 #else
532 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
347#endif 533 #endif
534#endif
348 535
536/*****************************************************************************/
537
538/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
539/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
540
541#if ECB_NO_THREADS || ECB_NO_SMP
542 #define ECB_MEMORY_FENCE do { } while (0)
543#endif
544
545#ifndef ECB_MEMORY_FENCE
546 #if ECB_GCC_VERSION(2,5)
547 #if __x86
548 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
549 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
550 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
551 #elif __amd64
552 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
553 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
554 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
555 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
556 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
557 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \
558 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__)
559 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,4" : : "r" (0) : "memory")
560 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \
561 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ )
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dsb" : : : "memory")
563 #endif
564 #endif
565#endif
566
567#ifndef ECB_MEMORY_FENCE
568 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER)
569 #define ECB_MEMORY_FENCE __sync_synchronize ()
570 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
571 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
572 #elif _MSC_VER >= 1400 /* VC++ 2005 */
573 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
574 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
575 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
576 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
577 #elif defined(_WIN32)
578 #include <WinNT.h>
579 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
580 #endif
581#endif
582
583#ifndef ECB_MEMORY_FENCE
584 #if !ECB_AVOID_PTHREADS
585 /*
586 * if you get undefined symbol references to pthread_mutex_lock,
587 * or failure to find pthread.h, then you should implement
588 * the ECB_MEMORY_FENCE operations for your cpu/compiler
589 * OR provide pthread.h and link against the posix thread library
590 * of your system.
591 */
592 #include <pthread.h>
593 #define ECB_NEEDS_PTHREADS 1
594 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
595
596 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
597 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
598 #endif
599#endif
600
601#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
602 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
603#endif
604
605#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
606 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
607#endif
608
609/*****************************************************************************/
610
611#define ECB_C99 (__STDC_VERSION__ >= 199901L)
612
613#if __cplusplus
614 #define ecb_inline static inline
615#elif ECB_GCC_VERSION(2,5)
616 #define ecb_inline static __inline__
617#elif ECB_C99
618 #define ecb_inline static inline
619#else
620 #define ecb_inline static
621#endif
622
623#if ECB_GCC_VERSION(3,3)
624 #define ecb_restrict __restrict__
625#elif ECB_C99
626 #define ecb_restrict restrict
627#else
628 #define ecb_restrict
629#endif
630
631typedef int ecb_bool;
632
633#define ECB_CONCAT_(a, b) a ## b
634#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
635#define ECB_STRINGIFY_(a) # a
636#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
637
638#define ecb_function_ ecb_inline
639
640#if ECB_GCC_VERSION(3,1)
641 #define ecb_attribute(attrlist) __attribute__(attrlist)
642 #define ecb_is_constant(expr) __builtin_constant_p (expr)
643 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
644 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
645#else
646 #define ecb_attribute(attrlist)
647 #define ecb_is_constant(expr) 0
648 #define ecb_expect(expr,value) (expr)
649 #define ecb_prefetch(addr,rw,locality)
650#endif
651
652/* no emulation for ecb_decltype */
653#if ECB_GCC_VERSION(4,5)
654 #define ecb_decltype(x) __decltype(x)
655#elif ECB_GCC_VERSION(3,0)
656 #define ecb_decltype(x) __typeof(x)
657#endif
658
659#define ecb_noinline ecb_attribute ((__noinline__))
660#define ecb_noreturn ecb_attribute ((__noreturn__))
661#define ecb_unused ecb_attribute ((__unused__))
662#define ecb_const ecb_attribute ((__const__))
663#define ecb_pure ecb_attribute ((__pure__))
664
665#if ECB_GCC_VERSION(4,3)
666 #define ecb_artificial ecb_attribute ((__artificial__))
667 #define ecb_hot ecb_attribute ((__hot__))
668 #define ecb_cold ecb_attribute ((__cold__))
669#else
670 #define ecb_artificial
671 #define ecb_hot
672 #define ecb_cold
673#endif
674
675/* put around conditional expressions if you are very sure that the */
676/* expression is mostly true or mostly false. note that these return */
677/* booleans, not the expression. */
349#define expect_false(expr) expect ((expr) != 0, 0) 678#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
350#define expect_true(expr) expect ((expr) != 0, 1) 679#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
680/* for compatibility to the rest of the world */
681#define ecb_likely(expr) ecb_expect_true (expr)
682#define ecb_unlikely(expr) ecb_expect_false (expr)
683
684/* count trailing zero bits and count # of one bits */
685#if ECB_GCC_VERSION(3,4)
686 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
687 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
688 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
689 #define ecb_ctz32(x) __builtin_ctz (x)
690 #define ecb_ctz64(x) __builtin_ctzll (x)
691 #define ecb_popcount32(x) __builtin_popcount (x)
692 /* no popcountll */
693#else
694 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
695 ecb_function_ int
696 ecb_ctz32 (uint32_t x)
697 {
698 int r = 0;
699
700 x &= ~x + 1; /* this isolates the lowest bit */
701
702#if ECB_branchless_on_i386
703 r += !!(x & 0xaaaaaaaa) << 0;
704 r += !!(x & 0xcccccccc) << 1;
705 r += !!(x & 0xf0f0f0f0) << 2;
706 r += !!(x & 0xff00ff00) << 3;
707 r += !!(x & 0xffff0000) << 4;
708#else
709 if (x & 0xaaaaaaaa) r += 1;
710 if (x & 0xcccccccc) r += 2;
711 if (x & 0xf0f0f0f0) r += 4;
712 if (x & 0xff00ff00) r += 8;
713 if (x & 0xffff0000) r += 16;
714#endif
715
716 return r;
717 }
718
719 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
720 ecb_function_ int
721 ecb_ctz64 (uint64_t x)
722 {
723 int shift = x & 0xffffffffU ? 0 : 32;
724 return ecb_ctz32 (x >> shift) + shift;
725 }
726
727 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
728 ecb_function_ int
729 ecb_popcount32 (uint32_t x)
730 {
731 x -= (x >> 1) & 0x55555555;
732 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
733 x = ((x >> 4) + x) & 0x0f0f0f0f;
734 x *= 0x01010101;
735
736 return x >> 24;
737 }
738
739 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
740 ecb_function_ int ecb_ld32 (uint32_t x)
741 {
742 int r = 0;
743
744 if (x >> 16) { x >>= 16; r += 16; }
745 if (x >> 8) { x >>= 8; r += 8; }
746 if (x >> 4) { x >>= 4; r += 4; }
747 if (x >> 2) { x >>= 2; r += 2; }
748 if (x >> 1) { r += 1; }
749
750 return r;
751 }
752
753 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
754 ecb_function_ int ecb_ld64 (uint64_t x)
755 {
756 int r = 0;
757
758 if (x >> 32) { x >>= 32; r += 32; }
759
760 return r + ecb_ld32 (x);
761 }
762#endif
763
764/* popcount64 is only available on 64 bit cpus as gcc builtin */
765/* so for this version we are lazy */
766ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
767ecb_function_ int
768ecb_popcount64 (uint64_t x)
769{
770 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
771}
772
773ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
774ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
775ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
776ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
777ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
778ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
779ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
780ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
781
782ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
783ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
784ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
785ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
786ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
787ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
788ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
789ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
790
791#if ECB_GCC_VERSION(4,3)
792 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
793 #define ecb_bswap32(x) __builtin_bswap32 (x)
794 #define ecb_bswap64(x) __builtin_bswap64 (x)
795#else
796 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
797 ecb_function_ uint16_t
798 ecb_bswap16 (uint16_t x)
799 {
800 return ecb_rotl16 (x, 8);
801 }
802
803 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
804 ecb_function_ uint32_t
805 ecb_bswap32 (uint32_t x)
806 {
807 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
808 }
809
810 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
811 ecb_function_ uint64_t
812 ecb_bswap64 (uint64_t x)
813 {
814 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
815 }
816#endif
817
818#if ECB_GCC_VERSION(4,5)
819 #define ecb_unreachable() __builtin_unreachable ()
820#else
821 /* this seems to work fine, but gcc always emits a warning for it :/ */
822 ecb_function_ void ecb_unreachable (void) ecb_noreturn;
823 ecb_function_ void ecb_unreachable (void) { }
824#endif
825
826/* try to tell the compiler that some condition is definitely true */
827#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
828
829ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
830ecb_function_ unsigned char
831ecb_byteorder_helper (void)
832{
833 const uint32_t u = 0x11223344;
834 return *(unsigned char *)&u;
835}
836
837ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
838ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
839ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
840ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
841
842#if ECB_GCC_VERSION(3,0) || ECB_C99
843 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
844#else
845 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
846#endif
847
848#if ecb_cplusplus_does_not_suck
849 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
850 template<typename T, int N>
851 static inline int ecb_array_length (const T (&arr)[N])
852 {
853 return N;
854 }
855#else
856 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
857#endif
858
859#endif
860
861/* ECB.H END */
862
863#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
864# undef ECB_MEMORY_FENCE
865# undef ECB_MEMORY_FENCE_ACQUIRE
866# undef ECB_MEMORY_FENCE_RELEASE
867#endif
868
869#define expect_false(cond) ecb_expect_false (cond)
870#define expect_true(cond) ecb_expect_true (cond)
871#define noinline ecb_noinline
872
351#define inline_size static inline 873#define inline_size ecb_inline
352 874
353#if EV_MINIMAL 875#if EV_FEATURE_CODE
876# define inline_speed ecb_inline
877#else
354# define inline_speed static noinline 878# define inline_speed static noinline
879#endif
880
881#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
882
883#if EV_MINPRI == EV_MAXPRI
884# define ABSPRI(w) (((W)w), 0)
355#else 885#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) 886# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
887#endif
361 888
362#define EMPTY /* required for microsofts broken pseudo-c compiler */ 889#define EMPTY /* required for microsofts broken pseudo-c compiler */
363#define EMPTY2(a,b) /* used to suppress some warnings */ 890#define EMPTY2(a,b) /* used to suppress some warnings */
364 891
365typedef ev_watcher *W; 892typedef ev_watcher *W;
… …
367typedef ev_watcher_time *WT; 894typedef ev_watcher_time *WT;
368 895
369#define ev_active(w) ((W)(w))->active 896#define ev_active(w) ((W)(w))->active
370#define ev_at(w) ((WT)(w))->at 897#define ev_at(w) ((WT)(w))->at
371 898
899#if EV_USE_REALTIME
900/* sig_atomic_t is used to avoid per-thread variables or locking but still */
901/* giving it a reasonably high chance of working on typical architectures */
902static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
903#endif
904
372#if EV_USE_MONOTONIC 905#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? */ 906static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
907#endif
908
909#ifndef EV_FD_TO_WIN32_HANDLE
910# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
911#endif
912#ifndef EV_WIN32_HANDLE_TO_FD
913# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
914#endif
915#ifndef EV_WIN32_CLOSE_FD
916# define EV_WIN32_CLOSE_FD(fd) close (fd)
376#endif 917#endif
377 918
378#ifdef _WIN32 919#ifdef _WIN32
379# include "ev_win32.c" 920# include "ev_win32.c"
380#endif 921#endif
381 922
382/*****************************************************************************/ 923/*****************************************************************************/
383 924
925/* define a suitable floor function (only used by periodics atm) */
926
927#if EV_USE_FLOOR
928# include <math.h>
929# define ev_floor(v) floor (v)
930#else
931
932#include <float.h>
933
934/* a floor() replacement function, should be independent of ev_tstamp type */
935static ev_tstamp noinline
936ev_floor (ev_tstamp v)
937{
938 /* the choice of shift factor is not terribly important */
939#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
940 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
941#else
942 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
943#endif
944
945 /* argument too large for an unsigned long? */
946 if (expect_false (v >= shift))
947 {
948 ev_tstamp f;
949
950 if (v == v - 1.)
951 return v; /* very large number */
952
953 f = shift * ev_floor (v * (1. / shift));
954 return f + ev_floor (v - f);
955 }
956
957 /* special treatment for negative args? */
958 if (expect_false (v < 0.))
959 {
960 ev_tstamp f = -ev_floor (-v);
961
962 return f - (f == v ? 0 : 1);
963 }
964
965 /* fits into an unsigned long */
966 return (unsigned long)v;
967}
968
969#endif
970
971/*****************************************************************************/
972
973#ifdef __linux
974# include <sys/utsname.h>
975#endif
976
977static unsigned int noinline ecb_cold
978ev_linux_version (void)
979{
980#ifdef __linux
981 unsigned int v = 0;
982 struct utsname buf;
983 int i;
984 char *p = buf.release;
985
986 if (uname (&buf))
987 return 0;
988
989 for (i = 3+1; --i; )
990 {
991 unsigned int c = 0;
992
993 for (;;)
994 {
995 if (*p >= '0' && *p <= '9')
996 c = c * 10 + *p++ - '0';
997 else
998 {
999 p += *p == '.';
1000 break;
1001 }
1002 }
1003
1004 v = (v << 8) | c;
1005 }
1006
1007 return v;
1008#else
1009 return 0;
1010#endif
1011}
1012
1013/*****************************************************************************/
1014
1015#if EV_AVOID_STDIO
1016static void noinline ecb_cold
1017ev_printerr (const char *msg)
1018{
1019 write (STDERR_FILENO, msg, strlen (msg));
1020}
1021#endif
1022
384static void (*syserr_cb)(const char *msg); 1023static void (*syserr_cb)(const char *msg);
385 1024
386void 1025void ecb_cold
387ev_set_syserr_cb (void (*cb)(const char *msg)) 1026ev_set_syserr_cb (void (*cb)(const char *msg))
388{ 1027{
389 syserr_cb = cb; 1028 syserr_cb = cb;
390} 1029}
391 1030
392static void noinline 1031static void noinline ecb_cold
393syserr (const char *msg) 1032ev_syserr (const char *msg)
394{ 1033{
395 if (!msg) 1034 if (!msg)
396 msg = "(libev) system error"; 1035 msg = "(libev) system error";
397 1036
398 if (syserr_cb) 1037 if (syserr_cb)
399 syserr_cb (msg); 1038 syserr_cb (msg);
400 else 1039 else
401 { 1040 {
1041#if EV_AVOID_STDIO
1042 ev_printerr (msg);
1043 ev_printerr (": ");
1044 ev_printerr (strerror (errno));
1045 ev_printerr ("\n");
1046#else
402 perror (msg); 1047 perror (msg);
1048#endif
403 abort (); 1049 abort ();
404 } 1050 }
405} 1051}
406 1052
407static void * 1053static void *
408ev_realloc_emul (void *ptr, long size) 1054ev_realloc_emul (void *ptr, long size)
409{ 1055{
1056#if __GLIBC__
1057 return realloc (ptr, size);
1058#else
410 /* some systems, notably openbsd and darwin, fail to properly 1059 /* some systems, notably openbsd and darwin, fail to properly
411 * implement realloc (x, 0) (as required by both ansi c-98 and 1060 * implement realloc (x, 0) (as required by both ansi c-89 and
412 * the single unix specification, so work around them here. 1061 * the single unix specification, so work around them here.
413 */ 1062 */
414 1063
415 if (size) 1064 if (size)
416 return realloc (ptr, size); 1065 return realloc (ptr, size);
417 1066
418 free (ptr); 1067 free (ptr);
419 return 0; 1068 return 0;
1069#endif
420} 1070}
421 1071
422static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1072static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
423 1073
424void 1074void ecb_cold
425ev_set_allocator (void *(*cb)(void *ptr, long size)) 1075ev_set_allocator (void *(*cb)(void *ptr, long size))
426{ 1076{
427 alloc = cb; 1077 alloc = cb;
428} 1078}
429 1079
… …
432{ 1082{
433 ptr = alloc (ptr, size); 1083 ptr = alloc (ptr, size);
434 1084
435 if (!ptr && size) 1085 if (!ptr && size)
436 { 1086 {
1087#if EV_AVOID_STDIO
1088 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1089#else
437 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1090 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1091#endif
438 abort (); 1092 abort ();
439 } 1093 }
440 1094
441 return ptr; 1095 return ptr;
442} 1096}
… …
444#define ev_malloc(size) ev_realloc (0, (size)) 1098#define ev_malloc(size) ev_realloc (0, (size))
445#define ev_free(ptr) ev_realloc ((ptr), 0) 1099#define ev_free(ptr) ev_realloc ((ptr), 0)
446 1100
447/*****************************************************************************/ 1101/*****************************************************************************/
448 1102
1103/* set in reify when reification needed */
1104#define EV_ANFD_REIFY 1
1105
1106/* file descriptor info structure */
449typedef struct 1107typedef struct
450{ 1108{
451 WL head; 1109 WL head;
452 unsigned char events; 1110 unsigned char events; /* the events watched for */
453 unsigned char reify; 1111 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
454 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1112 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
455 unsigned char unused; /* currently unused padding */ 1113 unsigned char unused;
1114#if EV_USE_EPOLL
1115 unsigned int egen; /* generation counter to counter epoll bugs */
1116#endif
456#if EV_SELECT_IS_WINSOCKET 1117#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
457 SOCKET handle; 1118 SOCKET handle;
458#endif 1119#endif
1120#if EV_USE_IOCP
1121 OVERLAPPED or, ow;
1122#endif
459} ANFD; 1123} ANFD;
460 1124
1125/* stores the pending event set for a given watcher */
461typedef struct 1126typedef struct
462{ 1127{
463 W w; 1128 W w;
464 int events; 1129 int events; /* the pending event set for the given watcher */
465} ANPENDING; 1130} ANPENDING;
466 1131
467#if EV_USE_INOTIFY 1132#if EV_USE_INOTIFY
468/* hash table entry per inotify-id */ 1133/* hash table entry per inotify-id */
469typedef struct 1134typedef struct
… …
472} ANFS; 1137} ANFS;
473#endif 1138#endif
474 1139
475/* Heap Entry */ 1140/* Heap Entry */
476#if EV_HEAP_CACHE_AT 1141#if EV_HEAP_CACHE_AT
1142 /* a heap element */
477 typedef struct { 1143 typedef struct {
478 ev_tstamp at; 1144 ev_tstamp at;
479 WT w; 1145 WT w;
480 } ANHE; 1146 } ANHE;
481 1147
482 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1148 #define ANHE_w(he) (he).w /* access watcher, read-write */
483 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1149 #define ANHE_at(he) (he).at /* access cached at, read-only */
484 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 1150 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
485#else 1151#else
1152 /* a heap element */
486 typedef WT ANHE; 1153 typedef WT ANHE;
487 1154
488 #define ANHE_w(he) (he) 1155 #define ANHE_w(he) (he)
489 #define ANHE_at(he) (he)->at 1156 #define ANHE_at(he) (he)->at
490 #define ANHE_at_cache(he) 1157 #define ANHE_at_cache(he)
… …
514 1181
515 static int ev_default_loop_ptr; 1182 static int ev_default_loop_ptr;
516 1183
517#endif 1184#endif
518 1185
1186#if EV_FEATURE_API
1187# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1188# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1189# define EV_INVOKE_PENDING invoke_cb (EV_A)
1190#else
1191# define EV_RELEASE_CB (void)0
1192# define EV_ACQUIRE_CB (void)0
1193# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1194#endif
1195
1196#define EVBREAK_RECURSE 0x80
1197
519/*****************************************************************************/ 1198/*****************************************************************************/
520 1199
1200#ifndef EV_HAVE_EV_TIME
521ev_tstamp 1201ev_tstamp
522ev_time (void) 1202ev_time (void)
523{ 1203{
524#if EV_USE_REALTIME 1204#if EV_USE_REALTIME
1205 if (expect_true (have_realtime))
1206 {
525 struct timespec ts; 1207 struct timespec ts;
526 clock_gettime (CLOCK_REALTIME, &ts); 1208 clock_gettime (CLOCK_REALTIME, &ts);
527 return ts.tv_sec + ts.tv_nsec * 1e-9; 1209 return ts.tv_sec + ts.tv_nsec * 1e-9;
528#else 1210 }
1211#endif
1212
529 struct timeval tv; 1213 struct timeval tv;
530 gettimeofday (&tv, 0); 1214 gettimeofday (&tv, 0);
531 return tv.tv_sec + tv.tv_usec * 1e-6; 1215 return tv.tv_sec + tv.tv_usec * 1e-6;
532#endif
533} 1216}
1217#endif
534 1218
535ev_tstamp inline_size 1219inline_size ev_tstamp
536get_clock (void) 1220get_clock (void)
537{ 1221{
538#if EV_USE_MONOTONIC 1222#if EV_USE_MONOTONIC
539 if (expect_true (have_monotonic)) 1223 if (expect_true (have_monotonic))
540 { 1224 {
… …
561 if (delay > 0.) 1245 if (delay > 0.)
562 { 1246 {
563#if EV_USE_NANOSLEEP 1247#if EV_USE_NANOSLEEP
564 struct timespec ts; 1248 struct timespec ts;
565 1249
566 ts.tv_sec = (time_t)delay; 1250 EV_TS_SET (ts, delay);
567 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
568
569 nanosleep (&ts, 0); 1251 nanosleep (&ts, 0);
570#elif defined(_WIN32) 1252#elif defined(_WIN32)
571 Sleep ((unsigned long)(delay * 1e3)); 1253 Sleep ((unsigned long)(delay * 1e3));
572#else 1254#else
573 struct timeval tv; 1255 struct timeval tv;
574 1256
575 tv.tv_sec = (time_t)delay;
576 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
577
578 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1257 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
579 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1258 /* something not guaranteed by newer posix versions, but guaranteed */
580 /* by older ones */ 1259 /* by older ones */
1260 EV_TV_SET (tv, delay);
581 select (0, 0, 0, 0, &tv); 1261 select (0, 0, 0, 0, &tv);
582#endif 1262#endif
583 } 1263 }
584} 1264}
585 1265
586/*****************************************************************************/ 1266/*****************************************************************************/
587 1267
588#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1268#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
589 1269
590int inline_size 1270/* find a suitable new size for the given array, */
1271/* hopefully by rounding to a nice-to-malloc size */
1272inline_size int
591array_nextsize (int elem, int cur, int cnt) 1273array_nextsize (int elem, int cur, int cnt)
592{ 1274{
593 int ncur = cur + 1; 1275 int ncur = cur + 1;
594 1276
595 do 1277 do
… …
606 } 1288 }
607 1289
608 return ncur; 1290 return ncur;
609} 1291}
610 1292
611static noinline void * 1293static void * noinline ecb_cold
612array_realloc (int elem, void *base, int *cur, int cnt) 1294array_realloc (int elem, void *base, int *cur, int cnt)
613{ 1295{
614 *cur = array_nextsize (elem, *cur, cnt); 1296 *cur = array_nextsize (elem, *cur, cnt);
615 return ev_realloc (base, elem * *cur); 1297 return ev_realloc (base, elem * *cur);
616} 1298}
… …
619 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1301 memset ((void *)(base), 0, sizeof (*(base)) * (count))
620 1302
621#define array_needsize(type,base,cur,cnt,init) \ 1303#define array_needsize(type,base,cur,cnt,init) \
622 if (expect_false ((cnt) > (cur))) \ 1304 if (expect_false ((cnt) > (cur))) \
623 { \ 1305 { \
624 int ocur_ = (cur); \ 1306 int ecb_unused ocur_ = (cur); \
625 (base) = (type *)array_realloc \ 1307 (base) = (type *)array_realloc \
626 (sizeof (type), (base), &(cur), (cnt)); \ 1308 (sizeof (type), (base), &(cur), (cnt)); \
627 init ((base) + (ocur_), (cur) - ocur_); \ 1309 init ((base) + (ocur_), (cur) - ocur_); \
628 } 1310 }
629 1311
… …
636 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1318 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
637 } 1319 }
638#endif 1320#endif
639 1321
640#define array_free(stem, idx) \ 1322#define array_free(stem, idx) \
641 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1323 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
642 1324
643/*****************************************************************************/ 1325/*****************************************************************************/
1326
1327/* dummy callback for pending events */
1328static void noinline
1329pendingcb (EV_P_ ev_prepare *w, int revents)
1330{
1331}
644 1332
645void noinline 1333void noinline
646ev_feed_event (EV_P_ void *w, int revents) 1334ev_feed_event (EV_P_ void *w, int revents)
647{ 1335{
648 W w_ = (W)w; 1336 W w_ = (W)w;
… …
657 pendings [pri][w_->pending - 1].w = w_; 1345 pendings [pri][w_->pending - 1].w = w_;
658 pendings [pri][w_->pending - 1].events = revents; 1346 pendings [pri][w_->pending - 1].events = revents;
659 } 1347 }
660} 1348}
661 1349
662void inline_speed 1350inline_speed void
1351feed_reverse (EV_P_ W w)
1352{
1353 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1354 rfeeds [rfeedcnt++] = w;
1355}
1356
1357inline_size void
1358feed_reverse_done (EV_P_ int revents)
1359{
1360 do
1361 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1362 while (rfeedcnt);
1363}
1364
1365inline_speed void
663queue_events (EV_P_ W *events, int eventcnt, int type) 1366queue_events (EV_P_ W *events, int eventcnt, int type)
664{ 1367{
665 int i; 1368 int i;
666 1369
667 for (i = 0; i < eventcnt; ++i) 1370 for (i = 0; i < eventcnt; ++i)
668 ev_feed_event (EV_A_ events [i], type); 1371 ev_feed_event (EV_A_ events [i], type);
669} 1372}
670 1373
671/*****************************************************************************/ 1374/*****************************************************************************/
672 1375
673void inline_speed 1376inline_speed void
674fd_event (EV_P_ int fd, int revents) 1377fd_event_nocheck (EV_P_ int fd, int revents)
675{ 1378{
676 ANFD *anfd = anfds + fd; 1379 ANFD *anfd = anfds + fd;
677 ev_io *w; 1380 ev_io *w;
678 1381
679 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1382 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
683 if (ev) 1386 if (ev)
684 ev_feed_event (EV_A_ (W)w, ev); 1387 ev_feed_event (EV_A_ (W)w, ev);
685 } 1388 }
686} 1389}
687 1390
1391/* do not submit kernel events for fds that have reify set */
1392/* because that means they changed while we were polling for new events */
1393inline_speed void
1394fd_event (EV_P_ int fd, int revents)
1395{
1396 ANFD *anfd = anfds + fd;
1397
1398 if (expect_true (!anfd->reify))
1399 fd_event_nocheck (EV_A_ fd, revents);
1400}
1401
688void 1402void
689ev_feed_fd_event (EV_P_ int fd, int revents) 1403ev_feed_fd_event (EV_P_ int fd, int revents)
690{ 1404{
691 if (fd >= 0 && fd < anfdmax) 1405 if (fd >= 0 && fd < anfdmax)
692 fd_event (EV_A_ fd, revents); 1406 fd_event_nocheck (EV_A_ fd, revents);
693} 1407}
694 1408
695void inline_size 1409/* make sure the external fd watch events are in-sync */
1410/* with the kernel/libev internal state */
1411inline_size void
696fd_reify (EV_P) 1412fd_reify (EV_P)
697{ 1413{
698 int i; 1414 int i;
1415
1416#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1417 for (i = 0; i < fdchangecnt; ++i)
1418 {
1419 int fd = fdchanges [i];
1420 ANFD *anfd = anfds + fd;
1421
1422 if (anfd->reify & EV__IOFDSET && anfd->head)
1423 {
1424 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1425
1426 if (handle != anfd->handle)
1427 {
1428 unsigned long arg;
1429
1430 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1431
1432 /* handle changed, but fd didn't - we need to do it in two steps */
1433 backend_modify (EV_A_ fd, anfd->events, 0);
1434 anfd->events = 0;
1435 anfd->handle = handle;
1436 }
1437 }
1438 }
1439#endif
699 1440
700 for (i = 0; i < fdchangecnt; ++i) 1441 for (i = 0; i < fdchangecnt; ++i)
701 { 1442 {
702 int fd = fdchanges [i]; 1443 int fd = fdchanges [i];
703 ANFD *anfd = anfds + fd; 1444 ANFD *anfd = anfds + fd;
704 ev_io *w; 1445 ev_io *w;
705 1446
706 unsigned char events = 0; 1447 unsigned char o_events = anfd->events;
1448 unsigned char o_reify = anfd->reify;
707 1449
708 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1450 anfd->reify = 0;
709 events |= (unsigned char)w->events;
710 1451
711#if EV_SELECT_IS_WINSOCKET 1452 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
712 if (events)
713 { 1453 {
714 unsigned long arg; 1454 anfd->events = 0;
715 #ifdef EV_FD_TO_WIN32_HANDLE 1455
716 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1456 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
717 #else 1457 anfd->events |= (unsigned char)w->events;
718 anfd->handle = _get_osfhandle (fd); 1458
719 #endif 1459 if (o_events != anfd->events)
720 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1460 o_reify = EV__IOFDSET; /* actually |= */
721 } 1461 }
722#endif
723 1462
724 { 1463 if (o_reify & EV__IOFDSET)
725 unsigned char o_events = anfd->events;
726 unsigned char o_reify = anfd->reify;
727
728 anfd->reify = 0;
729 anfd->events = events;
730
731 if (o_events != events || o_reify & EV_IOFDSET)
732 backend_modify (EV_A_ fd, o_events, events); 1464 backend_modify (EV_A_ fd, o_events, anfd->events);
733 }
734 } 1465 }
735 1466
736 fdchangecnt = 0; 1467 fdchangecnt = 0;
737} 1468}
738 1469
739void inline_size 1470/* something about the given fd changed */
1471inline_size void
740fd_change (EV_P_ int fd, int flags) 1472fd_change (EV_P_ int fd, int flags)
741{ 1473{
742 unsigned char reify = anfds [fd].reify; 1474 unsigned char reify = anfds [fd].reify;
743 anfds [fd].reify |= flags; 1475 anfds [fd].reify |= flags;
744 1476
… …
748 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1480 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
749 fdchanges [fdchangecnt - 1] = fd; 1481 fdchanges [fdchangecnt - 1] = fd;
750 } 1482 }
751} 1483}
752 1484
753void inline_speed 1485/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1486inline_speed void ecb_cold
754fd_kill (EV_P_ int fd) 1487fd_kill (EV_P_ int fd)
755{ 1488{
756 ev_io *w; 1489 ev_io *w;
757 1490
758 while ((w = (ev_io *)anfds [fd].head)) 1491 while ((w = (ev_io *)anfds [fd].head))
… …
760 ev_io_stop (EV_A_ w); 1493 ev_io_stop (EV_A_ w);
761 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1494 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
762 } 1495 }
763} 1496}
764 1497
765int inline_size 1498/* check whether the given fd is actually valid, for error recovery */
1499inline_size int ecb_cold
766fd_valid (int fd) 1500fd_valid (int fd)
767{ 1501{
768#ifdef _WIN32 1502#ifdef _WIN32
769 return _get_osfhandle (fd) != -1; 1503 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
770#else 1504#else
771 return fcntl (fd, F_GETFD) != -1; 1505 return fcntl (fd, F_GETFD) != -1;
772#endif 1506#endif
773} 1507}
774 1508
775/* called on EBADF to verify fds */ 1509/* called on EBADF to verify fds */
776static void noinline 1510static void noinline ecb_cold
777fd_ebadf (EV_P) 1511fd_ebadf (EV_P)
778{ 1512{
779 int fd; 1513 int fd;
780 1514
781 for (fd = 0; fd < anfdmax; ++fd) 1515 for (fd = 0; fd < anfdmax; ++fd)
… …
783 if (!fd_valid (fd) && errno == EBADF) 1517 if (!fd_valid (fd) && errno == EBADF)
784 fd_kill (EV_A_ fd); 1518 fd_kill (EV_A_ fd);
785} 1519}
786 1520
787/* called on ENOMEM in select/poll to kill some fds and retry */ 1521/* called on ENOMEM in select/poll to kill some fds and retry */
788static void noinline 1522static void noinline ecb_cold
789fd_enomem (EV_P) 1523fd_enomem (EV_P)
790{ 1524{
791 int fd; 1525 int fd;
792 1526
793 for (fd = anfdmax; fd--; ) 1527 for (fd = anfdmax; fd--; )
794 if (anfds [fd].events) 1528 if (anfds [fd].events)
795 { 1529 {
796 fd_kill (EV_A_ fd); 1530 fd_kill (EV_A_ fd);
797 return; 1531 break;
798 } 1532 }
799} 1533}
800 1534
801/* usually called after fork if backend needs to re-arm all fds from scratch */ 1535/* usually called after fork if backend needs to re-arm all fds from scratch */
802static void noinline 1536static void noinline
… …
806 1540
807 for (fd = 0; fd < anfdmax; ++fd) 1541 for (fd = 0; fd < anfdmax; ++fd)
808 if (anfds [fd].events) 1542 if (anfds [fd].events)
809 { 1543 {
810 anfds [fd].events = 0; 1544 anfds [fd].events = 0;
1545 anfds [fd].emask = 0;
811 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1546 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
812 } 1547 }
813} 1548}
814 1549
1550/* used to prepare libev internal fd's */
1551/* this is not fork-safe */
1552inline_speed void
1553fd_intern (int fd)
1554{
1555#ifdef _WIN32
1556 unsigned long arg = 1;
1557 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1558#else
1559 fcntl (fd, F_SETFD, FD_CLOEXEC);
1560 fcntl (fd, F_SETFL, O_NONBLOCK);
1561#endif
1562}
1563
815/*****************************************************************************/ 1564/*****************************************************************************/
816 1565
817/* 1566/*
818 * the heap functions want a real array index. array index 0 uis guaranteed to not 1567 * the heap functions want a real array index. array index 0 is guaranteed to not
819 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1568 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
820 * the branching factor of the d-tree. 1569 * the branching factor of the d-tree.
821 */ 1570 */
822 1571
823/* 1572/*
… …
832#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1581#define HEAP0 (DHEAP - 1) /* index of first element in heap */
833#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1582#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
834#define UPHEAP_DONE(p,k) ((p) == (k)) 1583#define UPHEAP_DONE(p,k) ((p) == (k))
835 1584
836/* away from the root */ 1585/* away from the root */
837void inline_speed 1586inline_speed void
838downheap (ANHE *heap, int N, int k) 1587downheap (ANHE *heap, int N, int k)
839{ 1588{
840 ANHE he = heap [k]; 1589 ANHE he = heap [k];
841 ANHE *E = heap + N + HEAP0; 1590 ANHE *E = heap + N + HEAP0;
842 1591
… …
882#define HEAP0 1 1631#define HEAP0 1
883#define HPARENT(k) ((k) >> 1) 1632#define HPARENT(k) ((k) >> 1)
884#define UPHEAP_DONE(p,k) (!(p)) 1633#define UPHEAP_DONE(p,k) (!(p))
885 1634
886/* away from the root */ 1635/* away from the root */
887void inline_speed 1636inline_speed void
888downheap (ANHE *heap, int N, int k) 1637downheap (ANHE *heap, int N, int k)
889{ 1638{
890 ANHE he = heap [k]; 1639 ANHE he = heap [k];
891 1640
892 for (;;) 1641 for (;;)
893 { 1642 {
894 int c = k << 1; 1643 int c = k << 1;
895 1644
896 if (c > N + HEAP0 - 1) 1645 if (c >= N + HEAP0)
897 break; 1646 break;
898 1647
899 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1648 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
900 ? 1 : 0; 1649 ? 1 : 0;
901 1650
… …
912 ev_active (ANHE_w (he)) = k; 1661 ev_active (ANHE_w (he)) = k;
913} 1662}
914#endif 1663#endif
915 1664
916/* towards the root */ 1665/* towards the root */
917void inline_speed 1666inline_speed void
918upheap (ANHE *heap, int k) 1667upheap (ANHE *heap, int k)
919{ 1668{
920 ANHE he = heap [k]; 1669 ANHE he = heap [k];
921 1670
922 for (;;) 1671 for (;;)
… …
933 1682
934 heap [k] = he; 1683 heap [k] = he;
935 ev_active (ANHE_w (he)) = k; 1684 ev_active (ANHE_w (he)) = k;
936} 1685}
937 1686
938void inline_size 1687/* move an element suitably so it is in a correct place */
1688inline_size void
939adjustheap (ANHE *heap, int N, int k) 1689adjustheap (ANHE *heap, int N, int k)
940{ 1690{
941 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1691 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
942 upheap (heap, k); 1692 upheap (heap, k);
943 else 1693 else
944 downheap (heap, N, k); 1694 downheap (heap, N, k);
945} 1695}
946 1696
947/* rebuild the heap: this function is used only once and executed rarely */ 1697/* rebuild the heap: this function is used only once and executed rarely */
948void inline_size 1698inline_size void
949reheap (ANHE *heap, int N) 1699reheap (ANHE *heap, int N)
950{ 1700{
951 int i; 1701 int i;
952 1702
953 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1703 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
956 upheap (heap, i + HEAP0); 1706 upheap (heap, i + HEAP0);
957} 1707}
958 1708
959/*****************************************************************************/ 1709/*****************************************************************************/
960 1710
1711/* associate signal watchers to a signal signal */
961typedef struct 1712typedef struct
962{ 1713{
1714 EV_ATOMIC_T pending;
1715#if EV_MULTIPLICITY
1716 EV_P;
1717#endif
963 WL head; 1718 WL head;
964 EV_ATOMIC_T gotsig;
965} ANSIG; 1719} ANSIG;
966 1720
967static ANSIG *signals; 1721static ANSIG signals [EV_NSIG - 1];
968static int signalmax;
969
970static EV_ATOMIC_T gotsig;
971 1722
972/*****************************************************************************/ 1723/*****************************************************************************/
973 1724
974void inline_speed 1725#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
975fd_intern (int fd)
976{
977#ifdef _WIN32
978 unsigned long arg = 1;
979 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
980#else
981 fcntl (fd, F_SETFD, FD_CLOEXEC);
982 fcntl (fd, F_SETFL, O_NONBLOCK);
983#endif
984}
985 1726
986static void noinline 1727static void noinline ecb_cold
987evpipe_init (EV_P) 1728evpipe_init (EV_P)
988{ 1729{
989 if (!ev_is_active (&pipeev)) 1730 if (!ev_is_active (&pipe_w))
990 { 1731 {
991#if EV_USE_EVENTFD 1732# if EV_USE_EVENTFD
1733 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1734 if (evfd < 0 && errno == EINVAL)
992 if ((evfd = eventfd (0, 0)) >= 0) 1735 evfd = eventfd (0, 0);
1736
1737 if (evfd >= 0)
993 { 1738 {
994 evpipe [0] = -1; 1739 evpipe [0] = -1;
995 fd_intern (evfd); 1740 fd_intern (evfd); /* doing it twice doesn't hurt */
996 ev_io_set (&pipeev, evfd, EV_READ); 1741 ev_io_set (&pipe_w, evfd, EV_READ);
997 } 1742 }
998 else 1743 else
999#endif 1744# endif
1000 { 1745 {
1001 while (pipe (evpipe)) 1746 while (pipe (evpipe))
1002 syserr ("(libev) error creating signal/async pipe"); 1747 ev_syserr ("(libev) error creating signal/async pipe");
1003 1748
1004 fd_intern (evpipe [0]); 1749 fd_intern (evpipe [0]);
1005 fd_intern (evpipe [1]); 1750 fd_intern (evpipe [1]);
1006 ev_io_set (&pipeev, evpipe [0], EV_READ); 1751 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1007 } 1752 }
1008 1753
1009 ev_io_start (EV_A_ &pipeev); 1754 ev_io_start (EV_A_ &pipe_w);
1010 ev_unref (EV_A); /* watcher should not keep loop alive */ 1755 ev_unref (EV_A); /* watcher should not keep loop alive */
1011 } 1756 }
1012} 1757}
1013 1758
1014void inline_size 1759inline_speed void
1015evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1760evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1016{ 1761{
1017 if (!*flag) 1762 if (expect_true (*flag))
1763 return;
1764
1765 *flag = 1;
1766
1767 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1768
1769 pipe_write_skipped = 1;
1770
1771 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1772
1773 if (pipe_write_wanted)
1018 { 1774 {
1775 int old_errno;
1776
1777 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1778
1019 int old_errno = errno; /* save errno because write might clobber it */ 1779 old_errno = errno; /* save errno because write will clobber it */
1020
1021 *flag = 1;
1022 1780
1023#if EV_USE_EVENTFD 1781#if EV_USE_EVENTFD
1024 if (evfd >= 0) 1782 if (evfd >= 0)
1025 { 1783 {
1026 uint64_t counter = 1; 1784 uint64_t counter = 1;
1027 write (evfd, &counter, sizeof (uint64_t)); 1785 write (evfd, &counter, sizeof (uint64_t));
1028 } 1786 }
1029 else 1787 else
1030#endif 1788#endif
1789 {
1790 /* win32 people keep sending patches that change this write() to send() */
1791 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1792 /* so when you think this write should be a send instead, please find out */
1793 /* where your send() is from - it's definitely not the microsoft send, and */
1794 /* tell me. thank you. */
1031 write (evpipe [1], &old_errno, 1); 1795 write (evpipe [1], &(evpipe [1]), 1);
1796 }
1032 1797
1033 errno = old_errno; 1798 errno = old_errno;
1034 } 1799 }
1035} 1800}
1036 1801
1802/* called whenever the libev signal pipe */
1803/* got some events (signal, async) */
1037static void 1804static void
1038pipecb (EV_P_ ev_io *iow, int revents) 1805pipecb (EV_P_ ev_io *iow, int revents)
1039{ 1806{
1807 int i;
1808
1809 if (revents & EV_READ)
1810 {
1040#if EV_USE_EVENTFD 1811#if EV_USE_EVENTFD
1041 if (evfd >= 0) 1812 if (evfd >= 0)
1042 { 1813 {
1043 uint64_t counter; 1814 uint64_t counter;
1044 read (evfd, &counter, sizeof (uint64_t)); 1815 read (evfd, &counter, sizeof (uint64_t));
1045 } 1816 }
1046 else 1817 else
1047#endif 1818#endif
1048 { 1819 {
1049 char dummy; 1820 char dummy;
1821 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1050 read (evpipe [0], &dummy, 1); 1822 read (evpipe [0], &dummy, 1);
1823 }
1824 }
1825
1826 pipe_write_skipped = 0;
1827
1828#if EV_SIGNAL_ENABLE
1829 if (sig_pending)
1051 } 1830 {
1831 sig_pending = 0;
1052 1832
1053 if (gotsig && ev_is_default_loop (EV_A)) 1833 for (i = EV_NSIG - 1; i--; )
1054 { 1834 if (expect_false (signals [i].pending))
1055 int signum;
1056 gotsig = 0;
1057
1058 for (signum = signalmax; signum--; )
1059 if (signals [signum].gotsig)
1060 ev_feed_signal_event (EV_A_ signum + 1); 1835 ev_feed_signal_event (EV_A_ i + 1);
1061 } 1836 }
1837#endif
1062 1838
1063#if EV_ASYNC_ENABLE 1839#if EV_ASYNC_ENABLE
1064 if (gotasync) 1840 if (async_pending)
1065 { 1841 {
1066 int i; 1842 async_pending = 0;
1067 gotasync = 0;
1068 1843
1069 for (i = asynccnt; i--; ) 1844 for (i = asynccnt; i--; )
1070 if (asyncs [i]->sent) 1845 if (asyncs [i]->sent)
1071 { 1846 {
1072 asyncs [i]->sent = 0; 1847 asyncs [i]->sent = 0;
… …
1076#endif 1851#endif
1077} 1852}
1078 1853
1079/*****************************************************************************/ 1854/*****************************************************************************/
1080 1855
1856void
1857ev_feed_signal (int signum)
1858{
1859#if EV_MULTIPLICITY
1860 EV_P = signals [signum - 1].loop;
1861
1862 if (!EV_A)
1863 return;
1864#endif
1865
1866 if (!ev_active (&pipe_w))
1867 return;
1868
1869 signals [signum - 1].pending = 1;
1870 evpipe_write (EV_A_ &sig_pending);
1871}
1872
1081static void 1873static void
1082ev_sighandler (int signum) 1874ev_sighandler (int signum)
1083{ 1875{
1084#if EV_MULTIPLICITY
1085 struct ev_loop *loop = &default_loop_struct;
1086#endif
1087
1088#if _WIN32 1876#ifdef _WIN32
1089 signal (signum, ev_sighandler); 1877 signal (signum, ev_sighandler);
1090#endif 1878#endif
1091 1879
1092 signals [signum - 1].gotsig = 1; 1880 ev_feed_signal (signum);
1093 evpipe_write (EV_A_ &gotsig);
1094} 1881}
1095 1882
1096void noinline 1883void noinline
1097ev_feed_signal_event (EV_P_ int signum) 1884ev_feed_signal_event (EV_P_ int signum)
1098{ 1885{
1099 WL w; 1886 WL w;
1100 1887
1888 if (expect_false (signum <= 0 || signum > EV_NSIG))
1889 return;
1890
1891 --signum;
1892
1101#if EV_MULTIPLICITY 1893#if EV_MULTIPLICITY
1102 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1894 /* it is permissible to try to feed a signal to the wrong loop */
1103#endif 1895 /* or, likely more useful, feeding a signal nobody is waiting for */
1104 1896
1105 --signum; 1897 if (expect_false (signals [signum].loop != EV_A))
1106
1107 if (signum < 0 || signum >= signalmax)
1108 return; 1898 return;
1899#endif
1109 1900
1110 signals [signum].gotsig = 0; 1901 signals [signum].pending = 0;
1111 1902
1112 for (w = signals [signum].head; w; w = w->next) 1903 for (w = signals [signum].head; w; w = w->next)
1113 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1904 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1114} 1905}
1115 1906
1907#if EV_USE_SIGNALFD
1908static void
1909sigfdcb (EV_P_ ev_io *iow, int revents)
1910{
1911 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1912
1913 for (;;)
1914 {
1915 ssize_t res = read (sigfd, si, sizeof (si));
1916
1917 /* not ISO-C, as res might be -1, but works with SuS */
1918 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1919 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1920
1921 if (res < (ssize_t)sizeof (si))
1922 break;
1923 }
1924}
1925#endif
1926
1927#endif
1928
1116/*****************************************************************************/ 1929/*****************************************************************************/
1117 1930
1931#if EV_CHILD_ENABLE
1118static WL childs [EV_PID_HASHSIZE]; 1932static WL childs [EV_PID_HASHSIZE];
1119
1120#ifndef _WIN32
1121 1933
1122static ev_signal childev; 1934static ev_signal childev;
1123 1935
1124#ifndef WIFCONTINUED 1936#ifndef WIFCONTINUED
1125# define WIFCONTINUED(status) 0 1937# define WIFCONTINUED(status) 0
1126#endif 1938#endif
1127 1939
1128void inline_speed 1940/* handle a single child status event */
1941inline_speed void
1129child_reap (EV_P_ int chain, int pid, int status) 1942child_reap (EV_P_ int chain, int pid, int status)
1130{ 1943{
1131 ev_child *w; 1944 ev_child *w;
1132 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1945 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1133 1946
1134 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1947 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1135 { 1948 {
1136 if ((w->pid == pid || !w->pid) 1949 if ((w->pid == pid || !w->pid)
1137 && (!traced || (w->flags & 1))) 1950 && (!traced || (w->flags & 1)))
1138 { 1951 {
1139 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1952 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1146 1959
1147#ifndef WCONTINUED 1960#ifndef WCONTINUED
1148# define WCONTINUED 0 1961# define WCONTINUED 0
1149#endif 1962#endif
1150 1963
1964/* called on sigchld etc., calls waitpid */
1151static void 1965static void
1152childcb (EV_P_ ev_signal *sw, int revents) 1966childcb (EV_P_ ev_signal *sw, int revents)
1153{ 1967{
1154 int pid, status; 1968 int pid, status;
1155 1969
… …
1163 /* make sure we are called again until all children have been reaped */ 1977 /* make sure we are called again until all children have been reaped */
1164 /* we need to do it this way so that the callback gets called before we continue */ 1978 /* we need to do it this way so that the callback gets called before we continue */
1165 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1979 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1166 1980
1167 child_reap (EV_A_ pid, pid, status); 1981 child_reap (EV_A_ pid, pid, status);
1168 if (EV_PID_HASHSIZE > 1) 1982 if ((EV_PID_HASHSIZE) > 1)
1169 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1983 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1170} 1984}
1171 1985
1172#endif 1986#endif
1173 1987
1174/*****************************************************************************/ 1988/*****************************************************************************/
1175 1989
1990#if EV_USE_IOCP
1991# include "ev_iocp.c"
1992#endif
1176#if EV_USE_PORT 1993#if EV_USE_PORT
1177# include "ev_port.c" 1994# include "ev_port.c"
1178#endif 1995#endif
1179#if EV_USE_KQUEUE 1996#if EV_USE_KQUEUE
1180# include "ev_kqueue.c" 1997# include "ev_kqueue.c"
… …
1187#endif 2004#endif
1188#if EV_USE_SELECT 2005#if EV_USE_SELECT
1189# include "ev_select.c" 2006# include "ev_select.c"
1190#endif 2007#endif
1191 2008
1192int 2009int ecb_cold
1193ev_version_major (void) 2010ev_version_major (void)
1194{ 2011{
1195 return EV_VERSION_MAJOR; 2012 return EV_VERSION_MAJOR;
1196} 2013}
1197 2014
1198int 2015int ecb_cold
1199ev_version_minor (void) 2016ev_version_minor (void)
1200{ 2017{
1201 return EV_VERSION_MINOR; 2018 return EV_VERSION_MINOR;
1202} 2019}
1203 2020
1204/* return true if we are running with elevated privileges and should ignore env variables */ 2021/* return true if we are running with elevated privileges and should ignore env variables */
1205int inline_size 2022int inline_size ecb_cold
1206enable_secure (void) 2023enable_secure (void)
1207{ 2024{
1208#ifdef _WIN32 2025#ifdef _WIN32
1209 return 0; 2026 return 0;
1210#else 2027#else
1211 return getuid () != geteuid () 2028 return getuid () != geteuid ()
1212 || getgid () != getegid (); 2029 || getgid () != getegid ();
1213#endif 2030#endif
1214} 2031}
1215 2032
1216unsigned int 2033unsigned int ecb_cold
1217ev_supported_backends (void) 2034ev_supported_backends (void)
1218{ 2035{
1219 unsigned int flags = 0; 2036 unsigned int flags = 0;
1220 2037
1221 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2038 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1225 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2042 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1226 2043
1227 return flags; 2044 return flags;
1228} 2045}
1229 2046
1230unsigned int 2047unsigned int ecb_cold
1231ev_recommended_backends (void) 2048ev_recommended_backends (void)
1232{ 2049{
1233 unsigned int flags = ev_supported_backends (); 2050 unsigned int flags = ev_supported_backends ();
1234 2051
1235#ifndef __NetBSD__ 2052#ifndef __NetBSD__
1236 /* kqueue is borked on everything but netbsd apparently */ 2053 /* kqueue is borked on everything but netbsd apparently */
1237 /* it usually doesn't work correctly on anything but sockets and pipes */ 2054 /* it usually doesn't work correctly on anything but sockets and pipes */
1238 flags &= ~EVBACKEND_KQUEUE; 2055 flags &= ~EVBACKEND_KQUEUE;
1239#endif 2056#endif
1240#ifdef __APPLE__ 2057#ifdef __APPLE__
1241 // flags &= ~EVBACKEND_KQUEUE; for documentation 2058 /* only select works correctly on that "unix-certified" platform */
1242 flags &= ~EVBACKEND_POLL; 2059 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
2060 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
2061#endif
2062#ifdef __FreeBSD__
2063 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1243#endif 2064#endif
1244 2065
1245 return flags; 2066 return flags;
1246} 2067}
1247 2068
1248unsigned int 2069unsigned int ecb_cold
1249ev_embeddable_backends (void) 2070ev_embeddable_backends (void)
1250{ 2071{
1251 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2072 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1252 2073
1253 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2074 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1254 /* please fix it and tell me how to detect the fix */ 2075 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1255 flags &= ~EVBACKEND_EPOLL; 2076 flags &= ~EVBACKEND_EPOLL;
1256 2077
1257 return flags; 2078 return flags;
1258} 2079}
1259 2080
1260unsigned int 2081unsigned int
1261ev_backend (EV_P) 2082ev_backend (EV_P)
1262{ 2083{
1263 return backend; 2084 return backend;
1264} 2085}
1265 2086
2087#if EV_FEATURE_API
1266unsigned int 2088unsigned int
1267ev_loop_count (EV_P) 2089ev_iteration (EV_P)
1268{ 2090{
1269 return loop_count; 2091 return loop_count;
2092}
2093
2094unsigned int
2095ev_depth (EV_P)
2096{
2097 return loop_depth;
1270} 2098}
1271 2099
1272void 2100void
1273ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2101ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1274{ 2102{
… …
1279ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2107ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1280{ 2108{
1281 timeout_blocktime = interval; 2109 timeout_blocktime = interval;
1282} 2110}
1283 2111
2112void
2113ev_set_userdata (EV_P_ void *data)
2114{
2115 userdata = data;
2116}
2117
2118void *
2119ev_userdata (EV_P)
2120{
2121 return userdata;
2122}
2123
2124void
2125ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
2126{
2127 invoke_cb = invoke_pending_cb;
2128}
2129
2130void
2131ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
2132{
2133 release_cb = release;
2134 acquire_cb = acquire;
2135}
2136#endif
2137
2138/* initialise a loop structure, must be zero-initialised */
1284static void noinline 2139static void noinline ecb_cold
1285loop_init (EV_P_ unsigned int flags) 2140loop_init (EV_P_ unsigned int flags)
1286{ 2141{
1287 if (!backend) 2142 if (!backend)
1288 { 2143 {
2144 origflags = flags;
2145
2146#if EV_USE_REALTIME
2147 if (!have_realtime)
2148 {
2149 struct timespec ts;
2150
2151 if (!clock_gettime (CLOCK_REALTIME, &ts))
2152 have_realtime = 1;
2153 }
2154#endif
2155
1289#if EV_USE_MONOTONIC 2156#if EV_USE_MONOTONIC
2157 if (!have_monotonic)
1290 { 2158 {
1291 struct timespec ts; 2159 struct timespec ts;
2160
1292 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2161 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1293 have_monotonic = 1; 2162 have_monotonic = 1;
1294 } 2163 }
1295#endif
1296
1297 ev_rt_now = ev_time ();
1298 mn_now = get_clock ();
1299 now_floor = mn_now;
1300 rtmn_diff = ev_rt_now - mn_now;
1301
1302 io_blocktime = 0.;
1303 timeout_blocktime = 0.;
1304 backend = 0;
1305 backend_fd = -1;
1306 gotasync = 0;
1307#if EV_USE_INOTIFY
1308 fs_fd = -2;
1309#endif 2164#endif
1310 2165
1311 /* pid check not overridable via env */ 2166 /* pid check not overridable via env */
1312#ifndef _WIN32 2167#ifndef _WIN32
1313 if (flags & EVFLAG_FORKCHECK) 2168 if (flags & EVFLAG_FORKCHECK)
… …
1317 if (!(flags & EVFLAG_NOENV) 2172 if (!(flags & EVFLAG_NOENV)
1318 && !enable_secure () 2173 && !enable_secure ()
1319 && getenv ("LIBEV_FLAGS")) 2174 && getenv ("LIBEV_FLAGS"))
1320 flags = atoi (getenv ("LIBEV_FLAGS")); 2175 flags = atoi (getenv ("LIBEV_FLAGS"));
1321 2176
1322 if (!(flags & 0x0000ffffU)) 2177 ev_rt_now = ev_time ();
2178 mn_now = get_clock ();
2179 now_floor = mn_now;
2180 rtmn_diff = ev_rt_now - mn_now;
2181#if EV_FEATURE_API
2182 invoke_cb = ev_invoke_pending;
2183#endif
2184
2185 io_blocktime = 0.;
2186 timeout_blocktime = 0.;
2187 backend = 0;
2188 backend_fd = -1;
2189 sig_pending = 0;
2190#if EV_ASYNC_ENABLE
2191 async_pending = 0;
2192#endif
2193 pipe_write_skipped = 0;
2194 pipe_write_wanted = 0;
2195#if EV_USE_INOTIFY
2196 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2197#endif
2198#if EV_USE_SIGNALFD
2199 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2200#endif
2201
2202 if (!(flags & EVBACKEND_MASK))
1323 flags |= ev_recommended_backends (); 2203 flags |= ev_recommended_backends ();
1324 2204
2205#if EV_USE_IOCP
2206 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2207#endif
1325#if EV_USE_PORT 2208#if EV_USE_PORT
1326 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2209 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1327#endif 2210#endif
1328#if EV_USE_KQUEUE 2211#if EV_USE_KQUEUE
1329 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2212 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1336#endif 2219#endif
1337#if EV_USE_SELECT 2220#if EV_USE_SELECT
1338 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2221 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1339#endif 2222#endif
1340 2223
2224 ev_prepare_init (&pending_w, pendingcb);
2225
2226#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1341 ev_init (&pipeev, pipecb); 2227 ev_init (&pipe_w, pipecb);
1342 ev_set_priority (&pipeev, EV_MAXPRI); 2228 ev_set_priority (&pipe_w, EV_MAXPRI);
2229#endif
1343 } 2230 }
1344} 2231}
1345 2232
1346static void noinline 2233/* free up a loop structure */
2234void ecb_cold
1347loop_destroy (EV_P) 2235ev_loop_destroy (EV_P)
1348{ 2236{
1349 int i; 2237 int i;
1350 2238
2239#if EV_MULTIPLICITY
2240 /* mimic free (0) */
2241 if (!EV_A)
2242 return;
2243#endif
2244
2245#if EV_CLEANUP_ENABLE
2246 /* queue cleanup watchers (and execute them) */
2247 if (expect_false (cleanupcnt))
2248 {
2249 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2250 EV_INVOKE_PENDING;
2251 }
2252#endif
2253
2254#if EV_CHILD_ENABLE
2255 if (ev_is_active (&childev))
2256 {
2257 ev_ref (EV_A); /* child watcher */
2258 ev_signal_stop (EV_A_ &childev);
2259 }
2260#endif
2261
1351 if (ev_is_active (&pipeev)) 2262 if (ev_is_active (&pipe_w))
1352 { 2263 {
1353 ev_ref (EV_A); /* signal watcher */ 2264 /*ev_ref (EV_A);*/
1354 ev_io_stop (EV_A_ &pipeev); 2265 /*ev_io_stop (EV_A_ &pipe_w);*/
1355 2266
1356#if EV_USE_EVENTFD 2267#if EV_USE_EVENTFD
1357 if (evfd >= 0) 2268 if (evfd >= 0)
1358 close (evfd); 2269 close (evfd);
1359#endif 2270#endif
1360 2271
1361 if (evpipe [0] >= 0) 2272 if (evpipe [0] >= 0)
1362 { 2273 {
1363 close (evpipe [0]); 2274 EV_WIN32_CLOSE_FD (evpipe [0]);
1364 close (evpipe [1]); 2275 EV_WIN32_CLOSE_FD (evpipe [1]);
1365 } 2276 }
1366 } 2277 }
2278
2279#if EV_USE_SIGNALFD
2280 if (ev_is_active (&sigfd_w))
2281 close (sigfd);
2282#endif
1367 2283
1368#if EV_USE_INOTIFY 2284#if EV_USE_INOTIFY
1369 if (fs_fd >= 0) 2285 if (fs_fd >= 0)
1370 close (fs_fd); 2286 close (fs_fd);
1371#endif 2287#endif
1372 2288
1373 if (backend_fd >= 0) 2289 if (backend_fd >= 0)
1374 close (backend_fd); 2290 close (backend_fd);
1375 2291
2292#if EV_USE_IOCP
2293 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2294#endif
1376#if EV_USE_PORT 2295#if EV_USE_PORT
1377 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2296 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1378#endif 2297#endif
1379#if EV_USE_KQUEUE 2298#if EV_USE_KQUEUE
1380 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2299 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1395#if EV_IDLE_ENABLE 2314#if EV_IDLE_ENABLE
1396 array_free (idle, [i]); 2315 array_free (idle, [i]);
1397#endif 2316#endif
1398 } 2317 }
1399 2318
1400 ev_free (anfds); anfdmax = 0; 2319 ev_free (anfds); anfds = 0; anfdmax = 0;
1401 2320
1402 /* have to use the microsoft-never-gets-it-right macro */ 2321 /* have to use the microsoft-never-gets-it-right macro */
2322 array_free (rfeed, EMPTY);
1403 array_free (fdchange, EMPTY); 2323 array_free (fdchange, EMPTY);
1404 array_free (timer, EMPTY); 2324 array_free (timer, EMPTY);
1405#if EV_PERIODIC_ENABLE 2325#if EV_PERIODIC_ENABLE
1406 array_free (periodic, EMPTY); 2326 array_free (periodic, EMPTY);
1407#endif 2327#endif
1408#if EV_FORK_ENABLE 2328#if EV_FORK_ENABLE
1409 array_free (fork, EMPTY); 2329 array_free (fork, EMPTY);
1410#endif 2330#endif
2331#if EV_CLEANUP_ENABLE
2332 array_free (cleanup, EMPTY);
2333#endif
1411 array_free (prepare, EMPTY); 2334 array_free (prepare, EMPTY);
1412 array_free (check, EMPTY); 2335 array_free (check, EMPTY);
1413#if EV_ASYNC_ENABLE 2336#if EV_ASYNC_ENABLE
1414 array_free (async, EMPTY); 2337 array_free (async, EMPTY);
1415#endif 2338#endif
1416 2339
1417 backend = 0; 2340 backend = 0;
2341
2342#if EV_MULTIPLICITY
2343 if (ev_is_default_loop (EV_A))
2344#endif
2345 ev_default_loop_ptr = 0;
2346#if EV_MULTIPLICITY
2347 else
2348 ev_free (EV_A);
2349#endif
1418} 2350}
1419 2351
1420#if EV_USE_INOTIFY 2352#if EV_USE_INOTIFY
1421void inline_size infy_fork (EV_P); 2353inline_size void infy_fork (EV_P);
1422#endif 2354#endif
1423 2355
1424void inline_size 2356inline_size void
1425loop_fork (EV_P) 2357loop_fork (EV_P)
1426{ 2358{
1427#if EV_USE_PORT 2359#if EV_USE_PORT
1428 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2360 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1429#endif 2361#endif
… …
1435#endif 2367#endif
1436#if EV_USE_INOTIFY 2368#if EV_USE_INOTIFY
1437 infy_fork (EV_A); 2369 infy_fork (EV_A);
1438#endif 2370#endif
1439 2371
1440 if (ev_is_active (&pipeev)) 2372 if (ev_is_active (&pipe_w))
1441 { 2373 {
1442 /* this "locks" the handlers against writing to the pipe */ 2374 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1443 /* while we modify the fd vars */
1444 gotsig = 1;
1445#if EV_ASYNC_ENABLE
1446 gotasync = 1;
1447#endif
1448 2375
1449 ev_ref (EV_A); 2376 ev_ref (EV_A);
1450 ev_io_stop (EV_A_ &pipeev); 2377 ev_io_stop (EV_A_ &pipe_w);
1451 2378
1452#if EV_USE_EVENTFD 2379#if EV_USE_EVENTFD
1453 if (evfd >= 0) 2380 if (evfd >= 0)
1454 close (evfd); 2381 close (evfd);
1455#endif 2382#endif
1456 2383
1457 if (evpipe [0] >= 0) 2384 if (evpipe [0] >= 0)
1458 { 2385 {
1459 close (evpipe [0]); 2386 EV_WIN32_CLOSE_FD (evpipe [0]);
1460 close (evpipe [1]); 2387 EV_WIN32_CLOSE_FD (evpipe [1]);
1461 } 2388 }
1462 2389
2390#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1463 evpipe_init (EV_A); 2391 evpipe_init (EV_A);
1464 /* now iterate over everything, in case we missed something */ 2392 /* now iterate over everything, in case we missed something */
1465 pipecb (EV_A_ &pipeev, EV_READ); 2393 pipecb (EV_A_ &pipe_w, EV_READ);
2394#endif
1466 } 2395 }
1467 2396
1468 postfork = 0; 2397 postfork = 0;
1469} 2398}
1470 2399
1471#if EV_MULTIPLICITY 2400#if EV_MULTIPLICITY
1472 2401
1473struct ev_loop * 2402struct ev_loop * ecb_cold
1474ev_loop_new (unsigned int flags) 2403ev_loop_new (unsigned int flags)
1475{ 2404{
1476 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2405 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1477 2406
1478 memset (loop, 0, sizeof (struct ev_loop)); 2407 memset (EV_A, 0, sizeof (struct ev_loop));
1479
1480 loop_init (EV_A_ flags); 2408 loop_init (EV_A_ flags);
1481 2409
1482 if (ev_backend (EV_A)) 2410 if (ev_backend (EV_A))
1483 return loop; 2411 return EV_A;
1484 2412
2413 ev_free (EV_A);
1485 return 0; 2414 return 0;
1486} 2415}
1487 2416
1488void 2417#endif /* multiplicity */
1489ev_loop_destroy (EV_P)
1490{
1491 loop_destroy (EV_A);
1492 ev_free (loop);
1493}
1494
1495void
1496ev_loop_fork (EV_P)
1497{
1498 postfork = 1; /* must be in line with ev_default_fork */
1499}
1500 2418
1501#if EV_VERIFY 2419#if EV_VERIFY
1502static void noinline 2420static void noinline ecb_cold
1503verify_watcher (EV_P_ W w) 2421verify_watcher (EV_P_ W w)
1504{ 2422{
1505 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2423 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1506 2424
1507 if (w->pending) 2425 if (w->pending)
1508 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2426 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1509} 2427}
1510 2428
1511static void noinline 2429static void noinline ecb_cold
1512verify_heap (EV_P_ ANHE *heap, int N) 2430verify_heap (EV_P_ ANHE *heap, int N)
1513{ 2431{
1514 int i; 2432 int i;
1515 2433
1516 for (i = HEAP0; i < N + HEAP0; ++i) 2434 for (i = HEAP0; i < N + HEAP0; ++i)
1517 { 2435 {
1518 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 2436 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1519 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 2437 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1520 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 2438 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1521 2439
1522 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2440 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1523 } 2441 }
1524} 2442}
1525 2443
1526static void noinline 2444static void noinline ecb_cold
1527array_verify (EV_P_ W *ws, int cnt) 2445array_verify (EV_P_ W *ws, int cnt)
1528{ 2446{
1529 while (cnt--) 2447 while (cnt--)
1530 { 2448 {
1531 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2449 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1532 verify_watcher (EV_A_ ws [cnt]); 2450 verify_watcher (EV_A_ ws [cnt]);
1533 } 2451 }
1534} 2452}
1535#endif 2453#endif
1536 2454
1537void 2455#if EV_FEATURE_API
2456void ecb_cold
1538ev_loop_verify (EV_P) 2457ev_verify (EV_P)
1539{ 2458{
1540#if EV_VERIFY 2459#if EV_VERIFY
1541 int i; 2460 int i;
1542 WL w; 2461 WL w;
1543 2462
1544 assert (activecnt >= -1); 2463 assert (activecnt >= -1);
1545 2464
1546 assert (fdchangemax >= fdchangecnt); 2465 assert (fdchangemax >= fdchangecnt);
1547 for (i = 0; i < fdchangecnt; ++i) 2466 for (i = 0; i < fdchangecnt; ++i)
1548 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 2467 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1549 2468
1550 assert (anfdmax >= 0); 2469 assert (anfdmax >= 0);
1551 for (i = 0; i < anfdmax; ++i) 2470 for (i = 0; i < anfdmax; ++i)
1552 for (w = anfds [i].head; w; w = w->next) 2471 for (w = anfds [i].head; w; w = w->next)
1553 { 2472 {
1554 verify_watcher (EV_A_ (W)w); 2473 verify_watcher (EV_A_ (W)w);
1555 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 2474 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1556 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2475 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1557 } 2476 }
1558 2477
1559 assert (timermax >= timercnt); 2478 assert (timermax >= timercnt);
1560 verify_heap (EV_A_ timers, timercnt); 2479 verify_heap (EV_A_ timers, timercnt);
1561 2480
… …
1577#if EV_FORK_ENABLE 2496#if EV_FORK_ENABLE
1578 assert (forkmax >= forkcnt); 2497 assert (forkmax >= forkcnt);
1579 array_verify (EV_A_ (W *)forks, forkcnt); 2498 array_verify (EV_A_ (W *)forks, forkcnt);
1580#endif 2499#endif
1581 2500
2501#if EV_CLEANUP_ENABLE
2502 assert (cleanupmax >= cleanupcnt);
2503 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2504#endif
2505
1582#if EV_ASYNC_ENABLE 2506#if EV_ASYNC_ENABLE
1583 assert (asyncmax >= asynccnt); 2507 assert (asyncmax >= asynccnt);
1584 array_verify (EV_A_ (W *)asyncs, asynccnt); 2508 array_verify (EV_A_ (W *)asyncs, asynccnt);
1585#endif 2509#endif
1586 2510
2511#if EV_PREPARE_ENABLE
1587 assert (preparemax >= preparecnt); 2512 assert (preparemax >= preparecnt);
1588 array_verify (EV_A_ (W *)prepares, preparecnt); 2513 array_verify (EV_A_ (W *)prepares, preparecnt);
2514#endif
1589 2515
2516#if EV_CHECK_ENABLE
1590 assert (checkmax >= checkcnt); 2517 assert (checkmax >= checkcnt);
1591 array_verify (EV_A_ (W *)checks, checkcnt); 2518 array_verify (EV_A_ (W *)checks, checkcnt);
2519#endif
1592 2520
1593# if 0 2521# if 0
2522#if EV_CHILD_ENABLE
1594 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2523 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1595 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2524 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2525#endif
1596# endif 2526# endif
1597#endif 2527#endif
1598} 2528}
1599 2529#endif
1600#endif /* multiplicity */
1601 2530
1602#if EV_MULTIPLICITY 2531#if EV_MULTIPLICITY
1603struct ev_loop * 2532struct ev_loop * ecb_cold
1604ev_default_loop_init (unsigned int flags)
1605#else 2533#else
1606int 2534int
2535#endif
1607ev_default_loop (unsigned int flags) 2536ev_default_loop (unsigned int flags)
1608#endif
1609{ 2537{
1610 if (!ev_default_loop_ptr) 2538 if (!ev_default_loop_ptr)
1611 { 2539 {
1612#if EV_MULTIPLICITY 2540#if EV_MULTIPLICITY
1613 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2541 EV_P = ev_default_loop_ptr = &default_loop_struct;
1614#else 2542#else
1615 ev_default_loop_ptr = 1; 2543 ev_default_loop_ptr = 1;
1616#endif 2544#endif
1617 2545
1618 loop_init (EV_A_ flags); 2546 loop_init (EV_A_ flags);
1619 2547
1620 if (ev_backend (EV_A)) 2548 if (ev_backend (EV_A))
1621 { 2549 {
1622#ifndef _WIN32 2550#if EV_CHILD_ENABLE
1623 ev_signal_init (&childev, childcb, SIGCHLD); 2551 ev_signal_init (&childev, childcb, SIGCHLD);
1624 ev_set_priority (&childev, EV_MAXPRI); 2552 ev_set_priority (&childev, EV_MAXPRI);
1625 ev_signal_start (EV_A_ &childev); 2553 ev_signal_start (EV_A_ &childev);
1626 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2554 ev_unref (EV_A); /* child watcher should not keep loop alive */
1627#endif 2555#endif
… …
1632 2560
1633 return ev_default_loop_ptr; 2561 return ev_default_loop_ptr;
1634} 2562}
1635 2563
1636void 2564void
1637ev_default_destroy (void) 2565ev_loop_fork (EV_P)
1638{ 2566{
1639#if EV_MULTIPLICITY
1640 struct ev_loop *loop = ev_default_loop_ptr;
1641#endif
1642
1643 ev_default_loop_ptr = 0;
1644
1645#ifndef _WIN32
1646 ev_ref (EV_A); /* child watcher */
1647 ev_signal_stop (EV_A_ &childev);
1648#endif
1649
1650 loop_destroy (EV_A);
1651}
1652
1653void
1654ev_default_fork (void)
1655{
1656#if EV_MULTIPLICITY
1657 struct ev_loop *loop = ev_default_loop_ptr;
1658#endif
1659
1660 if (backend)
1661 postfork = 1; /* must be in line with ev_loop_fork */ 2567 postfork = 1; /* must be in line with ev_default_fork */
1662} 2568}
1663 2569
1664/*****************************************************************************/ 2570/*****************************************************************************/
1665 2571
1666void 2572void
1667ev_invoke (EV_P_ void *w, int revents) 2573ev_invoke (EV_P_ void *w, int revents)
1668{ 2574{
1669 EV_CB_INVOKE ((W)w, revents); 2575 EV_CB_INVOKE ((W)w, revents);
1670} 2576}
1671 2577
1672void inline_speed 2578unsigned int
1673call_pending (EV_P) 2579ev_pending_count (EV_P)
2580{
2581 int pri;
2582 unsigned int count = 0;
2583
2584 for (pri = NUMPRI; pri--; )
2585 count += pendingcnt [pri];
2586
2587 return count;
2588}
2589
2590void noinline
2591ev_invoke_pending (EV_P)
1674{ 2592{
1675 int pri; 2593 int pri;
1676 2594
1677 for (pri = NUMPRI; pri--; ) 2595 for (pri = NUMPRI; pri--; )
1678 while (pendingcnt [pri]) 2596 while (pendingcnt [pri])
1679 { 2597 {
1680 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2598 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1681 2599
1682 if (expect_true (p->w))
1683 {
1684 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1685
1686 p->w->pending = 0; 2600 p->w->pending = 0;
1687 EV_CB_INVOKE (p->w, p->events); 2601 EV_CB_INVOKE (p->w, p->events);
1688 EV_FREQUENT_CHECK; 2602 EV_FREQUENT_CHECK;
1689 }
1690 } 2603 }
1691} 2604}
1692 2605
1693#if EV_IDLE_ENABLE 2606#if EV_IDLE_ENABLE
1694void inline_size 2607/* make idle watchers pending. this handles the "call-idle */
2608/* only when higher priorities are idle" logic */
2609inline_size void
1695idle_reify (EV_P) 2610idle_reify (EV_P)
1696{ 2611{
1697 if (expect_false (idleall)) 2612 if (expect_false (idleall))
1698 { 2613 {
1699 int pri; 2614 int pri;
… …
1711 } 2626 }
1712 } 2627 }
1713} 2628}
1714#endif 2629#endif
1715 2630
1716void inline_size 2631/* make timers pending */
2632inline_size void
1717timers_reify (EV_P) 2633timers_reify (EV_P)
1718{ 2634{
1719 EV_FREQUENT_CHECK; 2635 EV_FREQUENT_CHECK;
1720 2636
1721 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2637 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1722 { 2638 {
1723 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2639 do
1724
1725 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1726
1727 /* first reschedule or stop timer */
1728 if (w->repeat)
1729 { 2640 {
2641 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2642
2643 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2644
2645 /* first reschedule or stop timer */
2646 if (w->repeat)
2647 {
1730 ev_at (w) += w->repeat; 2648 ev_at (w) += w->repeat;
1731 if (ev_at (w) < mn_now) 2649 if (ev_at (w) < mn_now)
1732 ev_at (w) = mn_now; 2650 ev_at (w) = mn_now;
1733 2651
1734 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2652 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1735 2653
1736 ANHE_at_cache (timers [HEAP0]); 2654 ANHE_at_cache (timers [HEAP0]);
1737 downheap (timers, timercnt, HEAP0); 2655 downheap (timers, timercnt, HEAP0);
2656 }
2657 else
2658 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2659
2660 EV_FREQUENT_CHECK;
2661 feed_reverse (EV_A_ (W)w);
1738 } 2662 }
1739 else 2663 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1740 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1741 2664
1742 EV_FREQUENT_CHECK; 2665 feed_reverse_done (EV_A_ EV_TIMER);
1743 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1744 } 2666 }
1745} 2667}
1746 2668
1747#if EV_PERIODIC_ENABLE 2669#if EV_PERIODIC_ENABLE
1748void inline_size 2670
2671static void noinline
2672periodic_recalc (EV_P_ ev_periodic *w)
2673{
2674 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2675 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2676
2677 /* the above almost always errs on the low side */
2678 while (at <= ev_rt_now)
2679 {
2680 ev_tstamp nat = at + w->interval;
2681
2682 /* when resolution fails us, we use ev_rt_now */
2683 if (expect_false (nat == at))
2684 {
2685 at = ev_rt_now;
2686 break;
2687 }
2688
2689 at = nat;
2690 }
2691
2692 ev_at (w) = at;
2693}
2694
2695/* make periodics pending */
2696inline_size void
1749periodics_reify (EV_P) 2697periodics_reify (EV_P)
1750{ 2698{
1751 EV_FREQUENT_CHECK; 2699 EV_FREQUENT_CHECK;
1752 2700
1753 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2701 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1754 { 2702 {
1755 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2703 int feed_count = 0;
1756 2704
1757 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2705 do
1758
1759 /* first reschedule or stop timer */
1760 if (w->reschedule_cb)
1761 { 2706 {
2707 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2708
2709 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2710
2711 /* first reschedule or stop timer */
2712 if (w->reschedule_cb)
2713 {
1762 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2714 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1763 2715
1764 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2716 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1765 2717
1766 ANHE_at_cache (periodics [HEAP0]); 2718 ANHE_at_cache (periodics [HEAP0]);
1767 downheap (periodics, periodiccnt, HEAP0); 2719 downheap (periodics, periodiccnt, HEAP0);
2720 }
2721 else if (w->interval)
2722 {
2723 periodic_recalc (EV_A_ w);
2724 ANHE_at_cache (periodics [HEAP0]);
2725 downheap (periodics, periodiccnt, HEAP0);
2726 }
2727 else
2728 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2729
2730 EV_FREQUENT_CHECK;
2731 feed_reverse (EV_A_ (W)w);
1768 } 2732 }
1769 else if (w->interval) 2733 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1770 {
1771 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1772 /* if next trigger time is not sufficiently in the future, put it there */
1773 /* this might happen because of floating point inexactness */
1774 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1775 {
1776 ev_at (w) += w->interval;
1777 2734
1778 /* if interval is unreasonably low we might still have a time in the past */
1779 /* so correct this. this will make the periodic very inexact, but the user */
1780 /* has effectively asked to get triggered more often than possible */
1781 if (ev_at (w) < ev_rt_now)
1782 ev_at (w) = ev_rt_now;
1783 }
1784
1785 ANHE_at_cache (periodics [HEAP0]);
1786 downheap (periodics, periodiccnt, HEAP0);
1787 }
1788 else
1789 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1790
1791 EV_FREQUENT_CHECK;
1792 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2735 feed_reverse_done (EV_A_ EV_PERIODIC);
1793 } 2736 }
1794} 2737}
1795 2738
2739/* simply recalculate all periodics */
2740/* TODO: maybe ensure that at least one event happens when jumping forward? */
1796static void noinline 2741static void noinline ecb_cold
1797periodics_reschedule (EV_P) 2742periodics_reschedule (EV_P)
1798{ 2743{
1799 int i; 2744 int i;
1800 2745
1801 /* adjust periodics after time jump */ 2746 /* adjust periodics after time jump */
… …
1804 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2749 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1805 2750
1806 if (w->reschedule_cb) 2751 if (w->reschedule_cb)
1807 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2752 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1808 else if (w->interval) 2753 else if (w->interval)
1809 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2754 periodic_recalc (EV_A_ w);
1810 2755
1811 ANHE_at_cache (periodics [i]); 2756 ANHE_at_cache (periodics [i]);
1812 } 2757 }
1813 2758
1814 reheap (periodics, periodiccnt); 2759 reheap (periodics, periodiccnt);
1815} 2760}
1816#endif 2761#endif
1817 2762
1818void inline_speed 2763/* adjust all timers by a given offset */
2764static void noinline ecb_cold
2765timers_reschedule (EV_P_ ev_tstamp adjust)
2766{
2767 int i;
2768
2769 for (i = 0; i < timercnt; ++i)
2770 {
2771 ANHE *he = timers + i + HEAP0;
2772 ANHE_w (*he)->at += adjust;
2773 ANHE_at_cache (*he);
2774 }
2775}
2776
2777/* fetch new monotonic and realtime times from the kernel */
2778/* also detect if there was a timejump, and act accordingly */
2779inline_speed void
1819time_update (EV_P_ ev_tstamp max_block) 2780time_update (EV_P_ ev_tstamp max_block)
1820{ 2781{
1821 int i;
1822
1823#if EV_USE_MONOTONIC 2782#if EV_USE_MONOTONIC
1824 if (expect_true (have_monotonic)) 2783 if (expect_true (have_monotonic))
1825 { 2784 {
2785 int i;
1826 ev_tstamp odiff = rtmn_diff; 2786 ev_tstamp odiff = rtmn_diff;
1827 2787
1828 mn_now = get_clock (); 2788 mn_now = get_clock ();
1829 2789
1830 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2790 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1846 * doesn't hurt either as we only do this on time-jumps or 2806 * doesn't hurt either as we only do this on time-jumps or
1847 * in the unlikely event of having been preempted here. 2807 * in the unlikely event of having been preempted here.
1848 */ 2808 */
1849 for (i = 4; --i; ) 2809 for (i = 4; --i; )
1850 { 2810 {
2811 ev_tstamp diff;
1851 rtmn_diff = ev_rt_now - mn_now; 2812 rtmn_diff = ev_rt_now - mn_now;
1852 2813
2814 diff = odiff - rtmn_diff;
2815
1853 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2816 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1854 return; /* all is well */ 2817 return; /* all is well */
1855 2818
1856 ev_rt_now = ev_time (); 2819 ev_rt_now = ev_time ();
1857 mn_now = get_clock (); 2820 mn_now = get_clock ();
1858 now_floor = mn_now; 2821 now_floor = mn_now;
1859 } 2822 }
1860 2823
2824 /* no timer adjustment, as the monotonic clock doesn't jump */
2825 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1861# if EV_PERIODIC_ENABLE 2826# if EV_PERIODIC_ENABLE
1862 periodics_reschedule (EV_A); 2827 periodics_reschedule (EV_A);
1863# endif 2828# endif
1864 /* no timer adjustment, as the monotonic clock doesn't jump */
1865 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1866 } 2829 }
1867 else 2830 else
1868#endif 2831#endif
1869 { 2832 {
1870 ev_rt_now = ev_time (); 2833 ev_rt_now = ev_time ();
1871 2834
1872 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2835 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1873 { 2836 {
2837 /* adjust timers. this is easy, as the offset is the same for all of them */
2838 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1874#if EV_PERIODIC_ENABLE 2839#if EV_PERIODIC_ENABLE
1875 periodics_reschedule (EV_A); 2840 periodics_reschedule (EV_A);
1876#endif 2841#endif
1877 /* adjust timers. this is easy, as the offset is the same for all of them */
1878 for (i = 0; i < timercnt; ++i)
1879 {
1880 ANHE *he = timers + i + HEAP0;
1881 ANHE_w (*he)->at += ev_rt_now - mn_now;
1882 ANHE_at_cache (*he);
1883 }
1884 } 2842 }
1885 2843
1886 mn_now = ev_rt_now; 2844 mn_now = ev_rt_now;
1887 } 2845 }
1888} 2846}
1889 2847
1890void 2848void
1891ev_ref (EV_P)
1892{
1893 ++activecnt;
1894}
1895
1896void
1897ev_unref (EV_P)
1898{
1899 --activecnt;
1900}
1901
1902void
1903ev_now_update (EV_P)
1904{
1905 time_update (EV_A_ 1e100);
1906}
1907
1908static int loop_done;
1909
1910void
1911ev_loop (EV_P_ int flags) 2849ev_run (EV_P_ int flags)
1912{ 2850{
2851#if EV_FEATURE_API
2852 ++loop_depth;
2853#endif
2854
2855 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2856
1913 loop_done = EVUNLOOP_CANCEL; 2857 loop_done = EVBREAK_CANCEL;
1914 2858
1915 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2859 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1916 2860
1917 do 2861 do
1918 { 2862 {
1919#if EV_VERIFY >= 2 2863#if EV_VERIFY >= 2
1920 ev_loop_verify (EV_A); 2864 ev_verify (EV_A);
1921#endif 2865#endif
1922 2866
1923#ifndef _WIN32 2867#ifndef _WIN32
1924 if (expect_false (curpid)) /* penalise the forking check even more */ 2868 if (expect_false (curpid)) /* penalise the forking check even more */
1925 if (expect_false (getpid () != curpid)) 2869 if (expect_false (getpid () != curpid))
… …
1933 /* we might have forked, so queue fork handlers */ 2877 /* we might have forked, so queue fork handlers */
1934 if (expect_false (postfork)) 2878 if (expect_false (postfork))
1935 if (forkcnt) 2879 if (forkcnt)
1936 { 2880 {
1937 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2881 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1938 call_pending (EV_A); 2882 EV_INVOKE_PENDING;
1939 } 2883 }
1940#endif 2884#endif
1941 2885
2886#if EV_PREPARE_ENABLE
1942 /* queue prepare watchers (and execute them) */ 2887 /* queue prepare watchers (and execute them) */
1943 if (expect_false (preparecnt)) 2888 if (expect_false (preparecnt))
1944 { 2889 {
1945 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2890 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1946 call_pending (EV_A); 2891 EV_INVOKE_PENDING;
1947 } 2892 }
2893#endif
1948 2894
1949 if (expect_false (!activecnt)) 2895 if (expect_false (loop_done))
1950 break; 2896 break;
1951 2897
1952 /* we might have forked, so reify kernel state if necessary */ 2898 /* we might have forked, so reify kernel state if necessary */
1953 if (expect_false (postfork)) 2899 if (expect_false (postfork))
1954 loop_fork (EV_A); 2900 loop_fork (EV_A);
… …
1959 /* calculate blocking time */ 2905 /* calculate blocking time */
1960 { 2906 {
1961 ev_tstamp waittime = 0.; 2907 ev_tstamp waittime = 0.;
1962 ev_tstamp sleeptime = 0.; 2908 ev_tstamp sleeptime = 0.;
1963 2909
2910 /* remember old timestamp for io_blocktime calculation */
2911 ev_tstamp prev_mn_now = mn_now;
2912
2913 /* update time to cancel out callback processing overhead */
2914 time_update (EV_A_ 1e100);
2915
2916 /* from now on, we want a pipe-wake-up */
2917 pipe_write_wanted = 1;
2918
2919 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2920
1964 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2921 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1965 { 2922 {
1966 /* update time to cancel out callback processing overhead */
1967 time_update (EV_A_ 1e100);
1968
1969 waittime = MAX_BLOCKTIME; 2923 waittime = MAX_BLOCKTIME;
1970 2924
1971 if (timercnt) 2925 if (timercnt)
1972 { 2926 {
1973 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2927 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1974 if (waittime > to) waittime = to; 2928 if (waittime > to) waittime = to;
1975 } 2929 }
1976 2930
1977#if EV_PERIODIC_ENABLE 2931#if EV_PERIODIC_ENABLE
1978 if (periodiccnt) 2932 if (periodiccnt)
1979 { 2933 {
1980 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2934 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1981 if (waittime > to) waittime = to; 2935 if (waittime > to) waittime = to;
1982 } 2936 }
1983#endif 2937#endif
1984 2938
2939 /* don't let timeouts decrease the waittime below timeout_blocktime */
1985 if (expect_false (waittime < timeout_blocktime)) 2940 if (expect_false (waittime < timeout_blocktime))
1986 waittime = timeout_blocktime; 2941 waittime = timeout_blocktime;
1987 2942
1988 sleeptime = waittime - backend_fudge; 2943 /* at this point, we NEED to wait, so we have to ensure */
2944 /* to pass a minimum nonzero value to the backend */
2945 if (expect_false (waittime < backend_mintime))
2946 waittime = backend_mintime;
1989 2947
2948 /* extra check because io_blocktime is commonly 0 */
1990 if (expect_true (sleeptime > io_blocktime)) 2949 if (expect_false (io_blocktime))
1991 sleeptime = io_blocktime;
1992
1993 if (sleeptime)
1994 { 2950 {
2951 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2952
2953 if (sleeptime > waittime - backend_mintime)
2954 sleeptime = waittime - backend_mintime;
2955
2956 if (expect_true (sleeptime > 0.))
2957 {
1995 ev_sleep (sleeptime); 2958 ev_sleep (sleeptime);
1996 waittime -= sleeptime; 2959 waittime -= sleeptime;
2960 }
1997 } 2961 }
1998 } 2962 }
1999 2963
2964#if EV_FEATURE_API
2000 ++loop_count; 2965 ++loop_count;
2966#endif
2967 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2001 backend_poll (EV_A_ waittime); 2968 backend_poll (EV_A_ waittime);
2969 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2970
2971 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2972
2973 if (pipe_write_skipped)
2974 {
2975 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2976 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2977 }
2978
2002 2979
2003 /* update ev_rt_now, do magic */ 2980 /* update ev_rt_now, do magic */
2004 time_update (EV_A_ waittime + sleeptime); 2981 time_update (EV_A_ waittime + sleeptime);
2005 } 2982 }
2006 2983
… …
2013#if EV_IDLE_ENABLE 2990#if EV_IDLE_ENABLE
2014 /* queue idle watchers unless other events are pending */ 2991 /* queue idle watchers unless other events are pending */
2015 idle_reify (EV_A); 2992 idle_reify (EV_A);
2016#endif 2993#endif
2017 2994
2995#if EV_CHECK_ENABLE
2018 /* queue check watchers, to be executed first */ 2996 /* queue check watchers, to be executed first */
2019 if (expect_false (checkcnt)) 2997 if (expect_false (checkcnt))
2020 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2998 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2999#endif
2021 3000
2022 call_pending (EV_A); 3001 EV_INVOKE_PENDING;
2023 } 3002 }
2024 while (expect_true ( 3003 while (expect_true (
2025 activecnt 3004 activecnt
2026 && !loop_done 3005 && !loop_done
2027 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3006 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2028 )); 3007 ));
2029 3008
2030 if (loop_done == EVUNLOOP_ONE) 3009 if (loop_done == EVBREAK_ONE)
2031 loop_done = EVUNLOOP_CANCEL; 3010 loop_done = EVBREAK_CANCEL;
3011
3012#if EV_FEATURE_API
3013 --loop_depth;
3014#endif
2032} 3015}
2033 3016
2034void 3017void
2035ev_unloop (EV_P_ int how) 3018ev_break (EV_P_ int how)
2036{ 3019{
2037 loop_done = how; 3020 loop_done = how;
2038} 3021}
2039 3022
3023void
3024ev_ref (EV_P)
3025{
3026 ++activecnt;
3027}
3028
3029void
3030ev_unref (EV_P)
3031{
3032 --activecnt;
3033}
3034
3035void
3036ev_now_update (EV_P)
3037{
3038 time_update (EV_A_ 1e100);
3039}
3040
3041void
3042ev_suspend (EV_P)
3043{
3044 ev_now_update (EV_A);
3045}
3046
3047void
3048ev_resume (EV_P)
3049{
3050 ev_tstamp mn_prev = mn_now;
3051
3052 ev_now_update (EV_A);
3053 timers_reschedule (EV_A_ mn_now - mn_prev);
3054#if EV_PERIODIC_ENABLE
3055 /* TODO: really do this? */
3056 periodics_reschedule (EV_A);
3057#endif
3058}
3059
2040/*****************************************************************************/ 3060/*****************************************************************************/
3061/* singly-linked list management, used when the expected list length is short */
2041 3062
2042void inline_size 3063inline_size void
2043wlist_add (WL *head, WL elem) 3064wlist_add (WL *head, WL elem)
2044{ 3065{
2045 elem->next = *head; 3066 elem->next = *head;
2046 *head = elem; 3067 *head = elem;
2047} 3068}
2048 3069
2049void inline_size 3070inline_size void
2050wlist_del (WL *head, WL elem) 3071wlist_del (WL *head, WL elem)
2051{ 3072{
2052 while (*head) 3073 while (*head)
2053 { 3074 {
2054 if (*head == elem) 3075 if (expect_true (*head == elem))
2055 { 3076 {
2056 *head = elem->next; 3077 *head = elem->next;
2057 return; 3078 break;
2058 } 3079 }
2059 3080
2060 head = &(*head)->next; 3081 head = &(*head)->next;
2061 } 3082 }
2062} 3083}
2063 3084
2064void inline_speed 3085/* internal, faster, version of ev_clear_pending */
3086inline_speed void
2065clear_pending (EV_P_ W w) 3087clear_pending (EV_P_ W w)
2066{ 3088{
2067 if (w->pending) 3089 if (w->pending)
2068 { 3090 {
2069 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3091 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2070 w->pending = 0; 3092 w->pending = 0;
2071 } 3093 }
2072} 3094}
2073 3095
2074int 3096int
… …
2078 int pending = w_->pending; 3100 int pending = w_->pending;
2079 3101
2080 if (expect_true (pending)) 3102 if (expect_true (pending))
2081 { 3103 {
2082 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3104 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3105 p->w = (W)&pending_w;
2083 w_->pending = 0; 3106 w_->pending = 0;
2084 p->w = 0;
2085 return p->events; 3107 return p->events;
2086 } 3108 }
2087 else 3109 else
2088 return 0; 3110 return 0;
2089} 3111}
2090 3112
2091void inline_size 3113inline_size void
2092pri_adjust (EV_P_ W w) 3114pri_adjust (EV_P_ W w)
2093{ 3115{
2094 int pri = w->priority; 3116 int pri = ev_priority (w);
2095 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3117 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2096 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3118 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2097 w->priority = pri; 3119 ev_set_priority (w, pri);
2098} 3120}
2099 3121
2100void inline_speed 3122inline_speed void
2101ev_start (EV_P_ W w, int active) 3123ev_start (EV_P_ W w, int active)
2102{ 3124{
2103 pri_adjust (EV_A_ w); 3125 pri_adjust (EV_A_ w);
2104 w->active = active; 3126 w->active = active;
2105 ev_ref (EV_A); 3127 ev_ref (EV_A);
2106} 3128}
2107 3129
2108void inline_size 3130inline_size void
2109ev_stop (EV_P_ W w) 3131ev_stop (EV_P_ W w)
2110{ 3132{
2111 ev_unref (EV_A); 3133 ev_unref (EV_A);
2112 w->active = 0; 3134 w->active = 0;
2113} 3135}
… …
2120 int fd = w->fd; 3142 int fd = w->fd;
2121 3143
2122 if (expect_false (ev_is_active (w))) 3144 if (expect_false (ev_is_active (w)))
2123 return; 3145 return;
2124 3146
2125 assert (("ev_io_start called with negative fd", fd >= 0)); 3147 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2126 assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); 3148 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2127 3149
2128 EV_FREQUENT_CHECK; 3150 EV_FREQUENT_CHECK;
2129 3151
2130 ev_start (EV_A_ (W)w, 1); 3152 ev_start (EV_A_ (W)w, 1);
2131 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3153 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2132 wlist_add (&anfds[fd].head, (WL)w); 3154 wlist_add (&anfds[fd].head, (WL)w);
2133 3155
2134 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 3156 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2135 w->events &= ~EV_IOFDSET; 3157 w->events &= ~EV__IOFDSET;
2136 3158
2137 EV_FREQUENT_CHECK; 3159 EV_FREQUENT_CHECK;
2138} 3160}
2139 3161
2140void noinline 3162void noinline
… …
2142{ 3164{
2143 clear_pending (EV_A_ (W)w); 3165 clear_pending (EV_A_ (W)w);
2144 if (expect_false (!ev_is_active (w))) 3166 if (expect_false (!ev_is_active (w)))
2145 return; 3167 return;
2146 3168
2147 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3169 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2148 3170
2149 EV_FREQUENT_CHECK; 3171 EV_FREQUENT_CHECK;
2150 3172
2151 wlist_del (&anfds[w->fd].head, (WL)w); 3173 wlist_del (&anfds[w->fd].head, (WL)w);
2152 ev_stop (EV_A_ (W)w); 3174 ev_stop (EV_A_ (W)w);
2153 3175
2154 fd_change (EV_A_ w->fd, 1); 3176 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2155 3177
2156 EV_FREQUENT_CHECK; 3178 EV_FREQUENT_CHECK;
2157} 3179}
2158 3180
2159void noinline 3181void noinline
… …
2162 if (expect_false (ev_is_active (w))) 3184 if (expect_false (ev_is_active (w)))
2163 return; 3185 return;
2164 3186
2165 ev_at (w) += mn_now; 3187 ev_at (w) += mn_now;
2166 3188
2167 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 3189 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2168 3190
2169 EV_FREQUENT_CHECK; 3191 EV_FREQUENT_CHECK;
2170 3192
2171 ++timercnt; 3193 ++timercnt;
2172 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3194 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2175 ANHE_at_cache (timers [ev_active (w)]); 3197 ANHE_at_cache (timers [ev_active (w)]);
2176 upheap (timers, ev_active (w)); 3198 upheap (timers, ev_active (w));
2177 3199
2178 EV_FREQUENT_CHECK; 3200 EV_FREQUENT_CHECK;
2179 3201
2180 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3202 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2181} 3203}
2182 3204
2183void noinline 3205void noinline
2184ev_timer_stop (EV_P_ ev_timer *w) 3206ev_timer_stop (EV_P_ ev_timer *w)
2185{ 3207{
… …
2190 EV_FREQUENT_CHECK; 3212 EV_FREQUENT_CHECK;
2191 3213
2192 { 3214 {
2193 int active = ev_active (w); 3215 int active = ev_active (w);
2194 3216
2195 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 3217 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2196 3218
2197 --timercnt; 3219 --timercnt;
2198 3220
2199 if (expect_true (active < timercnt + HEAP0)) 3221 if (expect_true (active < timercnt + HEAP0))
2200 { 3222 {
2201 timers [active] = timers [timercnt + HEAP0]; 3223 timers [active] = timers [timercnt + HEAP0];
2202 adjustheap (timers, timercnt, active); 3224 adjustheap (timers, timercnt, active);
2203 } 3225 }
2204 } 3226 }
2205 3227
2206 EV_FREQUENT_CHECK;
2207
2208 ev_at (w) -= mn_now; 3228 ev_at (w) -= mn_now;
2209 3229
2210 ev_stop (EV_A_ (W)w); 3230 ev_stop (EV_A_ (W)w);
3231
3232 EV_FREQUENT_CHECK;
2211} 3233}
2212 3234
2213void noinline 3235void noinline
2214ev_timer_again (EV_P_ ev_timer *w) 3236ev_timer_again (EV_P_ ev_timer *w)
2215{ 3237{
… …
2233 } 3255 }
2234 3256
2235 EV_FREQUENT_CHECK; 3257 EV_FREQUENT_CHECK;
2236} 3258}
2237 3259
3260ev_tstamp
3261ev_timer_remaining (EV_P_ ev_timer *w)
3262{
3263 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3264}
3265
2238#if EV_PERIODIC_ENABLE 3266#if EV_PERIODIC_ENABLE
2239void noinline 3267void noinline
2240ev_periodic_start (EV_P_ ev_periodic *w) 3268ev_periodic_start (EV_P_ ev_periodic *w)
2241{ 3269{
2242 if (expect_false (ev_is_active (w))) 3270 if (expect_false (ev_is_active (w)))
… …
2244 3272
2245 if (w->reschedule_cb) 3273 if (w->reschedule_cb)
2246 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3274 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2247 else if (w->interval) 3275 else if (w->interval)
2248 { 3276 {
2249 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 3277 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2250 /* this formula differs from the one in periodic_reify because we do not always round up */ 3278 periodic_recalc (EV_A_ w);
2251 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2252 } 3279 }
2253 else 3280 else
2254 ev_at (w) = w->offset; 3281 ev_at (w) = w->offset;
2255 3282
2256 EV_FREQUENT_CHECK; 3283 EV_FREQUENT_CHECK;
… …
2262 ANHE_at_cache (periodics [ev_active (w)]); 3289 ANHE_at_cache (periodics [ev_active (w)]);
2263 upheap (periodics, ev_active (w)); 3290 upheap (periodics, ev_active (w));
2264 3291
2265 EV_FREQUENT_CHECK; 3292 EV_FREQUENT_CHECK;
2266 3293
2267 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3294 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2268} 3295}
2269 3296
2270void noinline 3297void noinline
2271ev_periodic_stop (EV_P_ ev_periodic *w) 3298ev_periodic_stop (EV_P_ ev_periodic *w)
2272{ 3299{
… …
2277 EV_FREQUENT_CHECK; 3304 EV_FREQUENT_CHECK;
2278 3305
2279 { 3306 {
2280 int active = ev_active (w); 3307 int active = ev_active (w);
2281 3308
2282 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 3309 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2283 3310
2284 --periodiccnt; 3311 --periodiccnt;
2285 3312
2286 if (expect_true (active < periodiccnt + HEAP0)) 3313 if (expect_true (active < periodiccnt + HEAP0))
2287 { 3314 {
2288 periodics [active] = periodics [periodiccnt + HEAP0]; 3315 periodics [active] = periodics [periodiccnt + HEAP0];
2289 adjustheap (periodics, periodiccnt, active); 3316 adjustheap (periodics, periodiccnt, active);
2290 } 3317 }
2291 } 3318 }
2292 3319
2293 EV_FREQUENT_CHECK;
2294
2295 ev_stop (EV_A_ (W)w); 3320 ev_stop (EV_A_ (W)w);
3321
3322 EV_FREQUENT_CHECK;
2296} 3323}
2297 3324
2298void noinline 3325void noinline
2299ev_periodic_again (EV_P_ ev_periodic *w) 3326ev_periodic_again (EV_P_ ev_periodic *w)
2300{ 3327{
… …
2306 3333
2307#ifndef SA_RESTART 3334#ifndef SA_RESTART
2308# define SA_RESTART 0 3335# define SA_RESTART 0
2309#endif 3336#endif
2310 3337
3338#if EV_SIGNAL_ENABLE
3339
2311void noinline 3340void noinline
2312ev_signal_start (EV_P_ ev_signal *w) 3341ev_signal_start (EV_P_ ev_signal *w)
2313{ 3342{
2314#if EV_MULTIPLICITY
2315 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2316#endif
2317 if (expect_false (ev_is_active (w))) 3343 if (expect_false (ev_is_active (w)))
2318 return; 3344 return;
2319 3345
2320 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3346 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2321 3347
2322 evpipe_init (EV_A); 3348#if EV_MULTIPLICITY
3349 assert (("libev: a signal must not be attached to two different loops",
3350 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2323 3351
2324 EV_FREQUENT_CHECK; 3352 signals [w->signum - 1].loop = EV_A;
3353#endif
2325 3354
3355 EV_FREQUENT_CHECK;
3356
3357#if EV_USE_SIGNALFD
3358 if (sigfd == -2)
2326 { 3359 {
2327#ifndef _WIN32 3360 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2328 sigset_t full, prev; 3361 if (sigfd < 0 && errno == EINVAL)
2329 sigfillset (&full); 3362 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2330 sigprocmask (SIG_SETMASK, &full, &prev);
2331#endif
2332 3363
2333 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3364 if (sigfd >= 0)
3365 {
3366 fd_intern (sigfd); /* doing it twice will not hurt */
2334 3367
2335#ifndef _WIN32 3368 sigemptyset (&sigfd_set);
2336 sigprocmask (SIG_SETMASK, &prev, 0); 3369
2337#endif 3370 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3371 ev_set_priority (&sigfd_w, EV_MAXPRI);
3372 ev_io_start (EV_A_ &sigfd_w);
3373 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3374 }
2338 } 3375 }
3376
3377 if (sigfd >= 0)
3378 {
3379 /* TODO: check .head */
3380 sigaddset (&sigfd_set, w->signum);
3381 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3382
3383 signalfd (sigfd, &sigfd_set, 0);
3384 }
3385#endif
2339 3386
2340 ev_start (EV_A_ (W)w, 1); 3387 ev_start (EV_A_ (W)w, 1);
2341 wlist_add (&signals [w->signum - 1].head, (WL)w); 3388 wlist_add (&signals [w->signum - 1].head, (WL)w);
2342 3389
2343 if (!((WL)w)->next) 3390 if (!((WL)w)->next)
3391# if EV_USE_SIGNALFD
3392 if (sigfd < 0) /*TODO*/
3393# endif
2344 { 3394 {
2345#if _WIN32 3395# ifdef _WIN32
3396 evpipe_init (EV_A);
3397
2346 signal (w->signum, ev_sighandler); 3398 signal (w->signum, ev_sighandler);
2347#else 3399# else
2348 struct sigaction sa; 3400 struct sigaction sa;
3401
3402 evpipe_init (EV_A);
3403
2349 sa.sa_handler = ev_sighandler; 3404 sa.sa_handler = ev_sighandler;
2350 sigfillset (&sa.sa_mask); 3405 sigfillset (&sa.sa_mask);
2351 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3406 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2352 sigaction (w->signum, &sa, 0); 3407 sigaction (w->signum, &sa, 0);
3408
3409 if (origflags & EVFLAG_NOSIGMASK)
3410 {
3411 sigemptyset (&sa.sa_mask);
3412 sigaddset (&sa.sa_mask, w->signum);
3413 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3414 }
2353#endif 3415#endif
2354 } 3416 }
2355 3417
2356 EV_FREQUENT_CHECK; 3418 EV_FREQUENT_CHECK;
2357} 3419}
2358 3420
2359void noinline 3421void noinline
… …
2367 3429
2368 wlist_del (&signals [w->signum - 1].head, (WL)w); 3430 wlist_del (&signals [w->signum - 1].head, (WL)w);
2369 ev_stop (EV_A_ (W)w); 3431 ev_stop (EV_A_ (W)w);
2370 3432
2371 if (!signals [w->signum - 1].head) 3433 if (!signals [w->signum - 1].head)
3434 {
3435#if EV_MULTIPLICITY
3436 signals [w->signum - 1].loop = 0; /* unattach from signal */
3437#endif
3438#if EV_USE_SIGNALFD
3439 if (sigfd >= 0)
3440 {
3441 sigset_t ss;
3442
3443 sigemptyset (&ss);
3444 sigaddset (&ss, w->signum);
3445 sigdelset (&sigfd_set, w->signum);
3446
3447 signalfd (sigfd, &sigfd_set, 0);
3448 sigprocmask (SIG_UNBLOCK, &ss, 0);
3449 }
3450 else
3451#endif
2372 signal (w->signum, SIG_DFL); 3452 signal (w->signum, SIG_DFL);
3453 }
2373 3454
2374 EV_FREQUENT_CHECK; 3455 EV_FREQUENT_CHECK;
2375} 3456}
3457
3458#endif
3459
3460#if EV_CHILD_ENABLE
2376 3461
2377void 3462void
2378ev_child_start (EV_P_ ev_child *w) 3463ev_child_start (EV_P_ ev_child *w)
2379{ 3464{
2380#if EV_MULTIPLICITY 3465#if EV_MULTIPLICITY
2381 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3466 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2382#endif 3467#endif
2383 if (expect_false (ev_is_active (w))) 3468 if (expect_false (ev_is_active (w)))
2384 return; 3469 return;
2385 3470
2386 EV_FREQUENT_CHECK; 3471 EV_FREQUENT_CHECK;
2387 3472
2388 ev_start (EV_A_ (W)w, 1); 3473 ev_start (EV_A_ (W)w, 1);
2389 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3474 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2390 3475
2391 EV_FREQUENT_CHECK; 3476 EV_FREQUENT_CHECK;
2392} 3477}
2393 3478
2394void 3479void
… …
2398 if (expect_false (!ev_is_active (w))) 3483 if (expect_false (!ev_is_active (w)))
2399 return; 3484 return;
2400 3485
2401 EV_FREQUENT_CHECK; 3486 EV_FREQUENT_CHECK;
2402 3487
2403 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3488 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2404 ev_stop (EV_A_ (W)w); 3489 ev_stop (EV_A_ (W)w);
2405 3490
2406 EV_FREQUENT_CHECK; 3491 EV_FREQUENT_CHECK;
2407} 3492}
3493
3494#endif
2408 3495
2409#if EV_STAT_ENABLE 3496#if EV_STAT_ENABLE
2410 3497
2411# ifdef _WIN32 3498# ifdef _WIN32
2412# undef lstat 3499# undef lstat
2413# define lstat(a,b) _stati64 (a,b) 3500# define lstat(a,b) _stati64 (a,b)
2414# endif 3501# endif
2415 3502
2416#define DEF_STAT_INTERVAL 5.0074891 3503#define DEF_STAT_INTERVAL 5.0074891
3504#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2417#define MIN_STAT_INTERVAL 0.1074891 3505#define MIN_STAT_INTERVAL 0.1074891
2418 3506
2419static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3507static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2420 3508
2421#if EV_USE_INOTIFY 3509#if EV_USE_INOTIFY
2422# define EV_INOTIFY_BUFSIZE 8192 3510
3511/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3512# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2423 3513
2424static void noinline 3514static void noinline
2425infy_add (EV_P_ ev_stat *w) 3515infy_add (EV_P_ ev_stat *w)
2426{ 3516{
2427 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); 3517 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);
2428 3518
2429 if (w->wd < 0) 3519 if (w->wd >= 0)
3520 {
3521 struct statfs sfs;
3522
3523 /* now local changes will be tracked by inotify, but remote changes won't */
3524 /* unless the filesystem is known to be local, we therefore still poll */
3525 /* also do poll on <2.6.25, but with normal frequency */
3526
3527 if (!fs_2625)
3528 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3529 else if (!statfs (w->path, &sfs)
3530 && (sfs.f_type == 0x1373 /* devfs */
3531 || sfs.f_type == 0xEF53 /* ext2/3 */
3532 || sfs.f_type == 0x3153464a /* jfs */
3533 || sfs.f_type == 0x52654973 /* reiser3 */
3534 || sfs.f_type == 0x01021994 /* tempfs */
3535 || sfs.f_type == 0x58465342 /* xfs */))
3536 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3537 else
3538 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2430 { 3539 }
2431 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3540 else
3541 {
3542 /* can't use inotify, continue to stat */
3543 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2432 3544
2433 /* monitor some parent directory for speedup hints */ 3545 /* if path is not there, monitor some parent directory for speedup hints */
2434 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3546 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2435 /* but an efficiency issue only */ 3547 /* but an efficiency issue only */
2436 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3548 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2437 { 3549 {
2438 char path [4096]; 3550 char path [4096];
2439 strcpy (path, w->path); 3551 strcpy (path, w->path);
… …
2443 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3555 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2444 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3556 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2445 3557
2446 char *pend = strrchr (path, '/'); 3558 char *pend = strrchr (path, '/');
2447 3559
2448 if (!pend) 3560 if (!pend || pend == path)
2449 break; /* whoops, no '/', complain to your admin */ 3561 break;
2450 3562
2451 *pend = 0; 3563 *pend = 0;
2452 w->wd = inotify_add_watch (fs_fd, path, mask); 3564 w->wd = inotify_add_watch (fs_fd, path, mask);
2453 } 3565 }
2454 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3566 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2455 } 3567 }
2456 } 3568 }
2457 else
2458 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2459 3569
2460 if (w->wd >= 0) 3570 if (w->wd >= 0)
2461 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3571 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3572
3573 /* now re-arm timer, if required */
3574 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3575 ev_timer_again (EV_A_ &w->timer);
3576 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2462} 3577}
2463 3578
2464static void noinline 3579static void noinline
2465infy_del (EV_P_ ev_stat *w) 3580infy_del (EV_P_ ev_stat *w)
2466{ 3581{
… …
2469 3584
2470 if (wd < 0) 3585 if (wd < 0)
2471 return; 3586 return;
2472 3587
2473 w->wd = -2; 3588 w->wd = -2;
2474 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3589 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2475 wlist_del (&fs_hash [slot].head, (WL)w); 3590 wlist_del (&fs_hash [slot].head, (WL)w);
2476 3591
2477 /* remove this watcher, if others are watching it, they will rearm */ 3592 /* remove this watcher, if others are watching it, they will rearm */
2478 inotify_rm_watch (fs_fd, wd); 3593 inotify_rm_watch (fs_fd, wd);
2479} 3594}
… …
2481static void noinline 3596static void noinline
2482infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3597infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2483{ 3598{
2484 if (slot < 0) 3599 if (slot < 0)
2485 /* overflow, need to check for all hash slots */ 3600 /* overflow, need to check for all hash slots */
2486 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3601 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2487 infy_wd (EV_A_ slot, wd, ev); 3602 infy_wd (EV_A_ slot, wd, ev);
2488 else 3603 else
2489 { 3604 {
2490 WL w_; 3605 WL w_;
2491 3606
2492 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3607 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2493 { 3608 {
2494 ev_stat *w = (ev_stat *)w_; 3609 ev_stat *w = (ev_stat *)w_;
2495 w_ = w_->next; /* lets us remove this watcher and all before it */ 3610 w_ = w_->next; /* lets us remove this watcher and all before it */
2496 3611
2497 if (w->wd == wd || wd == -1) 3612 if (w->wd == wd || wd == -1)
2498 { 3613 {
2499 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3614 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2500 { 3615 {
3616 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2501 w->wd = -1; 3617 w->wd = -1;
2502 infy_add (EV_A_ w); /* re-add, no matter what */ 3618 infy_add (EV_A_ w); /* re-add, no matter what */
2503 } 3619 }
2504 3620
2505 stat_timer_cb (EV_A_ &w->timer, 0); 3621 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2510 3626
2511static void 3627static void
2512infy_cb (EV_P_ ev_io *w, int revents) 3628infy_cb (EV_P_ ev_io *w, int revents)
2513{ 3629{
2514 char buf [EV_INOTIFY_BUFSIZE]; 3630 char buf [EV_INOTIFY_BUFSIZE];
2515 struct inotify_event *ev = (struct inotify_event *)buf;
2516 int ofs; 3631 int ofs;
2517 int len = read (fs_fd, buf, sizeof (buf)); 3632 int len = read (fs_fd, buf, sizeof (buf));
2518 3633
2519 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3634 for (ofs = 0; ofs < len; )
3635 {
3636 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2520 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3637 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3638 ofs += sizeof (struct inotify_event) + ev->len;
3639 }
2521} 3640}
2522 3641
2523void inline_size 3642inline_size void ecb_cold
2524infy_init (EV_P) 3643ev_check_2625 (EV_P)
2525{ 3644{
2526 if (fs_fd != -2)
2527 return;
2528
2529 /* kernels < 2.6.25 are borked 3645 /* kernels < 2.6.25 are borked
2530 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3646 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2531 */ 3647 */
2532 { 3648 if (ev_linux_version () < 0x020619)
2533 struct utsname buf; 3649 return;
2534 int major, minor, micro;
2535 3650
3651 fs_2625 = 1;
3652}
3653
3654inline_size int
3655infy_newfd (void)
3656{
3657#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3658 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3659 if (fd >= 0)
3660 return fd;
3661#endif
3662 return inotify_init ();
3663}
3664
3665inline_size void
3666infy_init (EV_P)
3667{
3668 if (fs_fd != -2)
3669 return;
3670
2536 fs_fd = -1; 3671 fs_fd = -1;
2537 3672
2538 if (uname (&buf)) 3673 ev_check_2625 (EV_A);
2539 return;
2540 3674
2541 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2542 return;
2543
2544 if (major < 2
2545 || (major == 2 && minor < 6)
2546 || (major == 2 && minor == 6 && micro < 25))
2547 return;
2548 }
2549
2550 fs_fd = inotify_init (); 3675 fs_fd = infy_newfd ();
2551 3676
2552 if (fs_fd >= 0) 3677 if (fs_fd >= 0)
2553 { 3678 {
3679 fd_intern (fs_fd);
2554 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3680 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2555 ev_set_priority (&fs_w, EV_MAXPRI); 3681 ev_set_priority (&fs_w, EV_MAXPRI);
2556 ev_io_start (EV_A_ &fs_w); 3682 ev_io_start (EV_A_ &fs_w);
3683 ev_unref (EV_A);
2557 } 3684 }
2558} 3685}
2559 3686
2560void inline_size 3687inline_size void
2561infy_fork (EV_P) 3688infy_fork (EV_P)
2562{ 3689{
2563 int slot; 3690 int slot;
2564 3691
2565 if (fs_fd < 0) 3692 if (fs_fd < 0)
2566 return; 3693 return;
2567 3694
3695 ev_ref (EV_A);
3696 ev_io_stop (EV_A_ &fs_w);
2568 close (fs_fd); 3697 close (fs_fd);
2569 fs_fd = inotify_init (); 3698 fs_fd = infy_newfd ();
2570 3699
3700 if (fs_fd >= 0)
3701 {
3702 fd_intern (fs_fd);
3703 ev_io_set (&fs_w, fs_fd, EV_READ);
3704 ev_io_start (EV_A_ &fs_w);
3705 ev_unref (EV_A);
3706 }
3707
2571 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3708 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2572 { 3709 {
2573 WL w_ = fs_hash [slot].head; 3710 WL w_ = fs_hash [slot].head;
2574 fs_hash [slot].head = 0; 3711 fs_hash [slot].head = 0;
2575 3712
2576 while (w_) 3713 while (w_)
… …
2581 w->wd = -1; 3718 w->wd = -1;
2582 3719
2583 if (fs_fd >= 0) 3720 if (fs_fd >= 0)
2584 infy_add (EV_A_ w); /* re-add, no matter what */ 3721 infy_add (EV_A_ w); /* re-add, no matter what */
2585 else 3722 else
3723 {
3724 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3725 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2586 ev_timer_start (EV_A_ &w->timer); 3726 ev_timer_again (EV_A_ &w->timer);
3727 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3728 }
2587 } 3729 }
2588 } 3730 }
2589} 3731}
2590 3732
2591#endif 3733#endif
… …
2608static void noinline 3750static void noinline
2609stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3751stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2610{ 3752{
2611 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3753 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2612 3754
2613 /* we copy this here each the time so that */ 3755 ev_statdata prev = w->attr;
2614 /* prev has the old value when the callback gets invoked */
2615 w->prev = w->attr;
2616 ev_stat_stat (EV_A_ w); 3756 ev_stat_stat (EV_A_ w);
2617 3757
2618 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3758 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2619 if ( 3759 if (
2620 w->prev.st_dev != w->attr.st_dev 3760 prev.st_dev != w->attr.st_dev
2621 || w->prev.st_ino != w->attr.st_ino 3761 || prev.st_ino != w->attr.st_ino
2622 || w->prev.st_mode != w->attr.st_mode 3762 || prev.st_mode != w->attr.st_mode
2623 || w->prev.st_nlink != w->attr.st_nlink 3763 || prev.st_nlink != w->attr.st_nlink
2624 || w->prev.st_uid != w->attr.st_uid 3764 || prev.st_uid != w->attr.st_uid
2625 || w->prev.st_gid != w->attr.st_gid 3765 || prev.st_gid != w->attr.st_gid
2626 || w->prev.st_rdev != w->attr.st_rdev 3766 || prev.st_rdev != w->attr.st_rdev
2627 || w->prev.st_size != w->attr.st_size 3767 || prev.st_size != w->attr.st_size
2628 || w->prev.st_atime != w->attr.st_atime 3768 || prev.st_atime != w->attr.st_atime
2629 || w->prev.st_mtime != w->attr.st_mtime 3769 || prev.st_mtime != w->attr.st_mtime
2630 || w->prev.st_ctime != w->attr.st_ctime 3770 || prev.st_ctime != w->attr.st_ctime
2631 ) { 3771 ) {
3772 /* we only update w->prev on actual differences */
3773 /* in case we test more often than invoke the callback, */
3774 /* to ensure that prev is always different to attr */
3775 w->prev = prev;
3776
2632 #if EV_USE_INOTIFY 3777 #if EV_USE_INOTIFY
2633 if (fs_fd >= 0) 3778 if (fs_fd >= 0)
2634 { 3779 {
2635 infy_del (EV_A_ w); 3780 infy_del (EV_A_ w);
2636 infy_add (EV_A_ w); 3781 infy_add (EV_A_ w);
… …
2646ev_stat_start (EV_P_ ev_stat *w) 3791ev_stat_start (EV_P_ ev_stat *w)
2647{ 3792{
2648 if (expect_false (ev_is_active (w))) 3793 if (expect_false (ev_is_active (w)))
2649 return; 3794 return;
2650 3795
2651 /* since we use memcmp, we need to clear any padding data etc. */
2652 memset (&w->prev, 0, sizeof (ev_statdata));
2653 memset (&w->attr, 0, sizeof (ev_statdata));
2654
2655 ev_stat_stat (EV_A_ w); 3796 ev_stat_stat (EV_A_ w);
2656 3797
3798 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2657 if (w->interval < MIN_STAT_INTERVAL) 3799 w->interval = MIN_STAT_INTERVAL;
2658 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2659 3800
2660 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3801 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2661 ev_set_priority (&w->timer, ev_priority (w)); 3802 ev_set_priority (&w->timer, ev_priority (w));
2662 3803
2663#if EV_USE_INOTIFY 3804#if EV_USE_INOTIFY
2664 infy_init (EV_A); 3805 infy_init (EV_A);
2665 3806
2666 if (fs_fd >= 0) 3807 if (fs_fd >= 0)
2667 infy_add (EV_A_ w); 3808 infy_add (EV_A_ w);
2668 else 3809 else
2669#endif 3810#endif
3811 {
2670 ev_timer_start (EV_A_ &w->timer); 3812 ev_timer_again (EV_A_ &w->timer);
3813 ev_unref (EV_A);
3814 }
2671 3815
2672 ev_start (EV_A_ (W)w, 1); 3816 ev_start (EV_A_ (W)w, 1);
2673 3817
2674 EV_FREQUENT_CHECK; 3818 EV_FREQUENT_CHECK;
2675} 3819}
… …
2684 EV_FREQUENT_CHECK; 3828 EV_FREQUENT_CHECK;
2685 3829
2686#if EV_USE_INOTIFY 3830#if EV_USE_INOTIFY
2687 infy_del (EV_A_ w); 3831 infy_del (EV_A_ w);
2688#endif 3832#endif
3833
3834 if (ev_is_active (&w->timer))
3835 {
3836 ev_ref (EV_A);
2689 ev_timer_stop (EV_A_ &w->timer); 3837 ev_timer_stop (EV_A_ &w->timer);
3838 }
2690 3839
2691 ev_stop (EV_A_ (W)w); 3840 ev_stop (EV_A_ (W)w);
2692 3841
2693 EV_FREQUENT_CHECK; 3842 EV_FREQUENT_CHECK;
2694} 3843}
… …
2739 3888
2740 EV_FREQUENT_CHECK; 3889 EV_FREQUENT_CHECK;
2741} 3890}
2742#endif 3891#endif
2743 3892
3893#if EV_PREPARE_ENABLE
2744void 3894void
2745ev_prepare_start (EV_P_ ev_prepare *w) 3895ev_prepare_start (EV_P_ ev_prepare *w)
2746{ 3896{
2747 if (expect_false (ev_is_active (w))) 3897 if (expect_false (ev_is_active (w)))
2748 return; 3898 return;
… …
2774 3924
2775 ev_stop (EV_A_ (W)w); 3925 ev_stop (EV_A_ (W)w);
2776 3926
2777 EV_FREQUENT_CHECK; 3927 EV_FREQUENT_CHECK;
2778} 3928}
3929#endif
2779 3930
3931#if EV_CHECK_ENABLE
2780void 3932void
2781ev_check_start (EV_P_ ev_check *w) 3933ev_check_start (EV_P_ ev_check *w)
2782{ 3934{
2783 if (expect_false (ev_is_active (w))) 3935 if (expect_false (ev_is_active (w)))
2784 return; 3936 return;
… …
2810 3962
2811 ev_stop (EV_A_ (W)w); 3963 ev_stop (EV_A_ (W)w);
2812 3964
2813 EV_FREQUENT_CHECK; 3965 EV_FREQUENT_CHECK;
2814} 3966}
3967#endif
2815 3968
2816#if EV_EMBED_ENABLE 3969#if EV_EMBED_ENABLE
2817void noinline 3970void noinline
2818ev_embed_sweep (EV_P_ ev_embed *w) 3971ev_embed_sweep (EV_P_ ev_embed *w)
2819{ 3972{
2820 ev_loop (w->other, EVLOOP_NONBLOCK); 3973 ev_run (w->other, EVRUN_NOWAIT);
2821} 3974}
2822 3975
2823static void 3976static void
2824embed_io_cb (EV_P_ ev_io *io, int revents) 3977embed_io_cb (EV_P_ ev_io *io, int revents)
2825{ 3978{
2826 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3979 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2827 3980
2828 if (ev_cb (w)) 3981 if (ev_cb (w))
2829 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3982 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2830 else 3983 else
2831 ev_loop (w->other, EVLOOP_NONBLOCK); 3984 ev_run (w->other, EVRUN_NOWAIT);
2832} 3985}
2833 3986
2834static void 3987static void
2835embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3988embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2836{ 3989{
2837 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3990 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2838 3991
2839 { 3992 {
2840 struct ev_loop *loop = w->other; 3993 EV_P = w->other;
2841 3994
2842 while (fdchangecnt) 3995 while (fdchangecnt)
2843 { 3996 {
2844 fd_reify (EV_A); 3997 fd_reify (EV_A);
2845 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3998 ev_run (EV_A_ EVRUN_NOWAIT);
2846 } 3999 }
2847 } 4000 }
2848} 4001}
2849 4002
2850static void 4003static void
2851embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 4004embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2852{ 4005{
2853 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4006 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2854 4007
4008 ev_embed_stop (EV_A_ w);
4009
2855 { 4010 {
2856 struct ev_loop *loop = w->other; 4011 EV_P = w->other;
2857 4012
2858 ev_loop_fork (EV_A); 4013 ev_loop_fork (EV_A);
4014 ev_run (EV_A_ EVRUN_NOWAIT);
2859 } 4015 }
4016
4017 ev_embed_start (EV_A_ w);
2860} 4018}
2861 4019
2862#if 0 4020#if 0
2863static void 4021static void
2864embed_idle_cb (EV_P_ ev_idle *idle, int revents) 4022embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2872{ 4030{
2873 if (expect_false (ev_is_active (w))) 4031 if (expect_false (ev_is_active (w)))
2874 return; 4032 return;
2875 4033
2876 { 4034 {
2877 struct ev_loop *loop = w->other; 4035 EV_P = w->other;
2878 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4036 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2879 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4037 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2880 } 4038 }
2881 4039
2882 EV_FREQUENT_CHECK; 4040 EV_FREQUENT_CHECK;
2883 4041
… …
2909 4067
2910 ev_io_stop (EV_A_ &w->io); 4068 ev_io_stop (EV_A_ &w->io);
2911 ev_prepare_stop (EV_A_ &w->prepare); 4069 ev_prepare_stop (EV_A_ &w->prepare);
2912 ev_fork_stop (EV_A_ &w->fork); 4070 ev_fork_stop (EV_A_ &w->fork);
2913 4071
4072 ev_stop (EV_A_ (W)w);
4073
2914 EV_FREQUENT_CHECK; 4074 EV_FREQUENT_CHECK;
2915} 4075}
2916#endif 4076#endif
2917 4077
2918#if EV_FORK_ENABLE 4078#if EV_FORK_ENABLE
… …
2951 4111
2952 EV_FREQUENT_CHECK; 4112 EV_FREQUENT_CHECK;
2953} 4113}
2954#endif 4114#endif
2955 4115
4116#if EV_CLEANUP_ENABLE
4117void
4118ev_cleanup_start (EV_P_ ev_cleanup *w)
4119{
4120 if (expect_false (ev_is_active (w)))
4121 return;
4122
4123 EV_FREQUENT_CHECK;
4124
4125 ev_start (EV_A_ (W)w, ++cleanupcnt);
4126 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4127 cleanups [cleanupcnt - 1] = w;
4128
4129 /* cleanup watchers should never keep a refcount on the loop */
4130 ev_unref (EV_A);
4131 EV_FREQUENT_CHECK;
4132}
4133
4134void
4135ev_cleanup_stop (EV_P_ ev_cleanup *w)
4136{
4137 clear_pending (EV_A_ (W)w);
4138 if (expect_false (!ev_is_active (w)))
4139 return;
4140
4141 EV_FREQUENT_CHECK;
4142 ev_ref (EV_A);
4143
4144 {
4145 int active = ev_active (w);
4146
4147 cleanups [active - 1] = cleanups [--cleanupcnt];
4148 ev_active (cleanups [active - 1]) = active;
4149 }
4150
4151 ev_stop (EV_A_ (W)w);
4152
4153 EV_FREQUENT_CHECK;
4154}
4155#endif
4156
2956#if EV_ASYNC_ENABLE 4157#if EV_ASYNC_ENABLE
2957void 4158void
2958ev_async_start (EV_P_ ev_async *w) 4159ev_async_start (EV_P_ ev_async *w)
2959{ 4160{
2960 if (expect_false (ev_is_active (w))) 4161 if (expect_false (ev_is_active (w)))
2961 return; 4162 return;
2962 4163
4164 w->sent = 0;
4165
2963 evpipe_init (EV_A); 4166 evpipe_init (EV_A);
2964 4167
2965 EV_FREQUENT_CHECK; 4168 EV_FREQUENT_CHECK;
2966 4169
2967 ev_start (EV_A_ (W)w, ++asynccnt); 4170 ev_start (EV_A_ (W)w, ++asynccnt);
… …
2994 4197
2995void 4198void
2996ev_async_send (EV_P_ ev_async *w) 4199ev_async_send (EV_P_ ev_async *w)
2997{ 4200{
2998 w->sent = 1; 4201 w->sent = 1;
2999 evpipe_write (EV_A_ &gotasync); 4202 evpipe_write (EV_A_ &async_pending);
3000} 4203}
3001#endif 4204#endif
3002 4205
3003/*****************************************************************************/ 4206/*****************************************************************************/
3004 4207
… …
3044{ 4247{
3045 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4248 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3046 4249
3047 if (expect_false (!once)) 4250 if (expect_false (!once))
3048 { 4251 {
3049 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4252 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3050 return; 4253 return;
3051 } 4254 }
3052 4255
3053 once->cb = cb; 4256 once->cb = cb;
3054 once->arg = arg; 4257 once->arg = arg;
… …
3066 ev_timer_set (&once->to, timeout, 0.); 4269 ev_timer_set (&once->to, timeout, 0.);
3067 ev_timer_start (EV_A_ &once->to); 4270 ev_timer_start (EV_A_ &once->to);
3068 } 4271 }
3069} 4272}
3070 4273
4274/*****************************************************************************/
4275
4276#if EV_WALK_ENABLE
4277void ecb_cold
4278ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
4279{
4280 int i, j;
4281 ev_watcher_list *wl, *wn;
4282
4283 if (types & (EV_IO | EV_EMBED))
4284 for (i = 0; i < anfdmax; ++i)
4285 for (wl = anfds [i].head; wl; )
4286 {
4287 wn = wl->next;
4288
4289#if EV_EMBED_ENABLE
4290 if (ev_cb ((ev_io *)wl) == embed_io_cb)
4291 {
4292 if (types & EV_EMBED)
4293 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
4294 }
4295 else
4296#endif
4297#if EV_USE_INOTIFY
4298 if (ev_cb ((ev_io *)wl) == infy_cb)
4299 ;
4300 else
4301#endif
4302 if ((ev_io *)wl != &pipe_w)
4303 if (types & EV_IO)
4304 cb (EV_A_ EV_IO, wl);
4305
4306 wl = wn;
4307 }
4308
4309 if (types & (EV_TIMER | EV_STAT))
4310 for (i = timercnt + HEAP0; i-- > HEAP0; )
4311#if EV_STAT_ENABLE
4312 /*TODO: timer is not always active*/
4313 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
4314 {
4315 if (types & EV_STAT)
4316 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
4317 }
4318 else
4319#endif
4320 if (types & EV_TIMER)
4321 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
4322
4323#if EV_PERIODIC_ENABLE
4324 if (types & EV_PERIODIC)
4325 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4326 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4327#endif
4328
4329#if EV_IDLE_ENABLE
4330 if (types & EV_IDLE)
4331 for (j = NUMPRI; j--; )
4332 for (i = idlecnt [j]; i--; )
4333 cb (EV_A_ EV_IDLE, idles [j][i]);
4334#endif
4335
4336#if EV_FORK_ENABLE
4337 if (types & EV_FORK)
4338 for (i = forkcnt; i--; )
4339 if (ev_cb (forks [i]) != embed_fork_cb)
4340 cb (EV_A_ EV_FORK, forks [i]);
4341#endif
4342
4343#if EV_ASYNC_ENABLE
4344 if (types & EV_ASYNC)
4345 for (i = asynccnt; i--; )
4346 cb (EV_A_ EV_ASYNC, asyncs [i]);
4347#endif
4348
4349#if EV_PREPARE_ENABLE
4350 if (types & EV_PREPARE)
4351 for (i = preparecnt; i--; )
4352# if EV_EMBED_ENABLE
4353 if (ev_cb (prepares [i]) != embed_prepare_cb)
4354# endif
4355 cb (EV_A_ EV_PREPARE, prepares [i]);
4356#endif
4357
4358#if EV_CHECK_ENABLE
4359 if (types & EV_CHECK)
4360 for (i = checkcnt; i--; )
4361 cb (EV_A_ EV_CHECK, checks [i]);
4362#endif
4363
4364#if EV_SIGNAL_ENABLE
4365 if (types & EV_SIGNAL)
4366 for (i = 0; i < EV_NSIG - 1; ++i)
4367 for (wl = signals [i].head; wl; )
4368 {
4369 wn = wl->next;
4370 cb (EV_A_ EV_SIGNAL, wl);
4371 wl = wn;
4372 }
4373#endif
4374
4375#if EV_CHILD_ENABLE
4376 if (types & EV_CHILD)
4377 for (i = (EV_PID_HASHSIZE); i--; )
4378 for (wl = childs [i]; wl; )
4379 {
4380 wn = wl->next;
4381 cb (EV_A_ EV_CHILD, wl);
4382 wl = wn;
4383 }
4384#endif
4385/* EV_STAT 0x00001000 /* stat data changed */
4386/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4387}
4388#endif
4389
3071#if EV_MULTIPLICITY 4390#if EV_MULTIPLICITY
3072 #include "ev_wrap.h" 4391 #include "ev_wrap.h"
3073#endif 4392#endif
3074 4393
3075#ifdef __cplusplus 4394EV_CPP(})
3076}
3077#endif
3078 4395

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