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Comparing libev/ev.c (file contents):
Revision 1.271 by root, Mon Nov 3 12:13:15 2008 UTC vs.
Revision 1.392 by root, Thu Aug 4 14:37:49 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>
292# include <sys/statfs.h> 397# include <sys/statfs.h>
293# include <sys/inotify.h> 398# include <sys/inotify.h>
294/* 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 */
295# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
296# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
… …
303#endif 408#endif
304 409
305#if EV_USE_EVENTFD 410#if EV_USE_EVENTFD
306/* 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 */
307# include <stdint.h> 412# include <stdint.h>
308# ifdef __cplusplus 413# ifndef EFD_NONBLOCK
309extern "C" { 414# define EFD_NONBLOCK O_NONBLOCK
310# endif 415# endif
311int eventfd (unsigned int initval, int flags); 416# ifndef EFD_CLOEXEC
312# ifdef __cplusplus 417# ifdef O_CLOEXEC
313} 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
314# 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};
315#endif 446#endif
316 447
317/**/ 448/**/
318 449
319#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
320# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
321#else 452#else
322# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
323#endif 454#endif
324 455
325/* 456/*
326 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
327 * It is added to ev_rt_now when scheduling periodics
328 * to ensure progress, time-wise, even when rounding
329 * errors are against us.
330 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
331 * Better solutions welcome.
332 */ 459 */
333#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 */
334 462
335#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) */
336#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) */
337/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
338 465
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;
339#if __GNUC__ >= 4 510 #if __GNUC__
340# define expect(expr,value) __builtin_expect ((expr),(value)) 511 typedef signed long long int64_t;
341# 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
342#else 517#else
343# define expect(expr,value) (expr) 518 #include <inttypes.h>
344# define noinline
345# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
346# define inline
347# 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)))
348#endif 533 #endif
534#endif
349 535
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 #define ECB_MEMORY_FENCE_ACQUIRE do { } while (0)
544 #define ECB_MEMORY_FENCE_RELEASE do { } while (0)
545#endif
546
547#ifndef ECB_MEMORY_FENCE
548 #if ECB_GCC_VERSION(2,5)
549 #if __x86
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
552 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
553 #elif __amd64
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
555 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
556 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
557 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
558 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
559 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \
560 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) \
561 || defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \
562 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ )
563 #define ECB_MEMORY_FENCE \
564 do { \
565 int null = 0; \
566 __asm__ __volatile__ ("mcr p15,0,%0,c6,c10,5", : "=&r" (null) : : "memory"); \
567 while (0)
568 #endif
569 #endif
570#endif
571
572#ifndef ECB_MEMORY_FENCE
573 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER)
574 #define ECB_MEMORY_FENCE __sync_synchronize ()
575 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
576 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
577 #elif _MSC_VER >= 1400 /* VC++ 2005 */
578 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
579 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
580 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
581 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
582 #elif defined(_WIN32)
583 #include <WinNT.h>
584 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
585 #endif
586#endif
587
588#ifndef ECB_MEMORY_FENCE
589 #if !ECB_AVOID_PTHREADS
590 /*
591 * if you get undefined symbol references to pthread_mutex_lock,
592 * or failure to find pthread.h, then you should implement
593 * the ECB_MEMORY_FENCE operations for your cpu/compiler
594 * OR provide pthread.h and link against the posix thread library
595 * of your system.
596 */
597 #include <pthread.h>
598 #define ECB_NEEDS_PTHREADS 1
599 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
600
601 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
602 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
603 #endif
604#endif
605
606#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
607 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
608#endif
609
610#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
611 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
612#endif
613
614/*****************************************************************************/
615
616#define ECB_C99 (__STDC_VERSION__ >= 199901L)
617
618#if __cplusplus
619 #define ecb_inline static inline
620#elif ECB_GCC_VERSION(2,5)
621 #define ecb_inline static __inline__
622#elif ECB_C99
623 #define ecb_inline static inline
624#else
625 #define ecb_inline static
626#endif
627
628#if ECB_GCC_VERSION(3,3)
629 #define ecb_restrict __restrict__
630#elif ECB_C99
631 #define ecb_restrict restrict
632#else
633 #define ecb_restrict
634#endif
635
636typedef int ecb_bool;
637
638#define ECB_CONCAT_(a, b) a ## b
639#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
640#define ECB_STRINGIFY_(a) # a
641#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
642
643#define ecb_function_ ecb_inline
644
645#if ECB_GCC_VERSION(3,1)
646 #define ecb_attribute(attrlist) __attribute__(attrlist)
647 #define ecb_is_constant(expr) __builtin_constant_p (expr)
648 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
649 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
650#else
651 #define ecb_attribute(attrlist)
652 #define ecb_is_constant(expr) 0
653 #define ecb_expect(expr,value) (expr)
654 #define ecb_prefetch(addr,rw,locality)
655#endif
656
657/* no emulation for ecb_decltype */
658#if ECB_GCC_VERSION(4,5)
659 #define ecb_decltype(x) __decltype(x)
660#elif ECB_GCC_VERSION(3,0)
661 #define ecb_decltype(x) __typeof(x)
662#endif
663
664#define ecb_noinline ecb_attribute ((__noinline__))
665#define ecb_noreturn ecb_attribute ((__noreturn__))
666#define ecb_unused ecb_attribute ((__unused__))
667#define ecb_const ecb_attribute ((__const__))
668#define ecb_pure ecb_attribute ((__pure__))
669
670#if ECB_GCC_VERSION(4,3)
671 #define ecb_artificial ecb_attribute ((__artificial__))
672 #define ecb_hot ecb_attribute ((__hot__))
673 #define ecb_cold ecb_attribute ((__cold__))
674#else
675 #define ecb_artificial
676 #define ecb_hot
677 #define ecb_cold
678#endif
679
680/* put around conditional expressions if you are very sure that the */
681/* expression is mostly true or mostly false. note that these return */
682/* booleans, not the expression. */
350#define expect_false(expr) expect ((expr) != 0, 0) 683#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
351#define expect_true(expr) expect ((expr) != 0, 1) 684#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
685/* for compatibility to the rest of the world */
686#define ecb_likely(expr) ecb_expect_true (expr)
687#define ecb_unlikely(expr) ecb_expect_false (expr)
688
689/* count trailing zero bits and count # of one bits */
690#if ECB_GCC_VERSION(3,4)
691 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
692 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
693 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
694 #define ecb_ctz32(x) __builtin_ctz (x)
695 #define ecb_ctz64(x) __builtin_ctzll (x)
696 #define ecb_popcount32(x) __builtin_popcount (x)
697 /* no popcountll */
698#else
699 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
700 ecb_function_ int
701 ecb_ctz32 (uint32_t x)
702 {
703 int r = 0;
704
705 x &= ~x + 1; /* this isolates the lowest bit */
706
707#if ECB_branchless_on_i386
708 r += !!(x & 0xaaaaaaaa) << 0;
709 r += !!(x & 0xcccccccc) << 1;
710 r += !!(x & 0xf0f0f0f0) << 2;
711 r += !!(x & 0xff00ff00) << 3;
712 r += !!(x & 0xffff0000) << 4;
713#else
714 if (x & 0xaaaaaaaa) r += 1;
715 if (x & 0xcccccccc) r += 2;
716 if (x & 0xf0f0f0f0) r += 4;
717 if (x & 0xff00ff00) r += 8;
718 if (x & 0xffff0000) r += 16;
719#endif
720
721 return r;
722 }
723
724 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
725 ecb_function_ int
726 ecb_ctz64 (uint64_t x)
727 {
728 int shift = x & 0xffffffffU ? 0 : 32;
729 return ecb_ctz32 (x >> shift) + shift;
730 }
731
732 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
733 ecb_function_ int
734 ecb_popcount32 (uint32_t x)
735 {
736 x -= (x >> 1) & 0x55555555;
737 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
738 x = ((x >> 4) + x) & 0x0f0f0f0f;
739 x *= 0x01010101;
740
741 return x >> 24;
742 }
743
744 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
745 ecb_function_ int ecb_ld32 (uint32_t x)
746 {
747 int r = 0;
748
749 if (x >> 16) { x >>= 16; r += 16; }
750 if (x >> 8) { x >>= 8; r += 8; }
751 if (x >> 4) { x >>= 4; r += 4; }
752 if (x >> 2) { x >>= 2; r += 2; }
753 if (x >> 1) { r += 1; }
754
755 return r;
756 }
757
758 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
759 ecb_function_ int ecb_ld64 (uint64_t x)
760 {
761 int r = 0;
762
763 if (x >> 32) { x >>= 32; r += 32; }
764
765 return r + ecb_ld32 (x);
766 }
767#endif
768
769/* popcount64 is only available on 64 bit cpus as gcc builtin */
770/* so for this version we are lazy */
771ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
772ecb_function_ int
773ecb_popcount64 (uint64_t x)
774{
775 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
776}
777
778ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
779ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
780ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
781ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
782ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
783ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
784ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
785ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
786
787ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
788ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
789ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
790ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
791ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
792ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
793ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
794ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
795
796#if ECB_GCC_VERSION(4,3)
797 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
798 #define ecb_bswap32(x) __builtin_bswap32 (x)
799 #define ecb_bswap64(x) __builtin_bswap64 (x)
800#else
801 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
802 ecb_function_ uint16_t
803 ecb_bswap16 (uint16_t x)
804 {
805 return ecb_rotl16 (x, 8);
806 }
807
808 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
809 ecb_function_ uint32_t
810 ecb_bswap32 (uint32_t x)
811 {
812 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
813 }
814
815 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
816 ecb_function_ uint64_t
817 ecb_bswap64 (uint64_t x)
818 {
819 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
820 }
821#endif
822
823#if ECB_GCC_VERSION(4,5)
824 #define ecb_unreachable() __builtin_unreachable ()
825#else
826 /* this seems to work fine, but gcc always emits a warning for it :/ */
827 ecb_function_ void ecb_unreachable (void) ecb_noreturn;
828 ecb_function_ void ecb_unreachable (void) { }
829#endif
830
831/* try to tell the compiler that some condition is definitely true */
832#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
833
834ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
835ecb_function_ unsigned char
836ecb_byteorder_helper (void)
837{
838 const uint32_t u = 0x11223344;
839 return *(unsigned char *)&u;
840}
841
842ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
843ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
844ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
845ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
846
847#if ECB_GCC_VERSION(3,0) || ECB_C99
848 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
849#else
850 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
851#endif
852
853#if ecb_cplusplus_does_not_suck
854 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
855 template<typename T, int N>
856 static inline int ecb_array_length (const T (&arr)[N])
857 {
858 return N;
859 }
860#else
861 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
862#endif
863
864#endif
865
866/* ECB.H END */
867
868#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
869# undef ECB_MEMORY_FENCE
870# undef ECB_MEMORY_FENCE_ACQUIRE
871# undef ECB_MEMORY_FENCE_RELEASE
872#endif
873
874#define expect_false(cond) ecb_expect_false (cond)
875#define expect_true(cond) ecb_expect_true (cond)
876#define noinline ecb_noinline
877
352#define inline_size static inline 878#define inline_size ecb_inline
353 879
354#if EV_MINIMAL 880#if EV_FEATURE_CODE
881# define inline_speed ecb_inline
882#else
355# define inline_speed static noinline 883# define inline_speed static noinline
884#endif
885
886#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
887
888#if EV_MINPRI == EV_MAXPRI
889# define ABSPRI(w) (((W)w), 0)
356#else 890#else
357# define inline_speed static inline
358#endif
359
360#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
361#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 891# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
892#endif
362 893
363#define EMPTY /* required for microsofts broken pseudo-c compiler */ 894#define EMPTY /* required for microsofts broken pseudo-c compiler */
364#define EMPTY2(a,b) /* used to suppress some warnings */ 895#define EMPTY2(a,b) /* used to suppress some warnings */
365 896
366typedef ev_watcher *W; 897typedef ev_watcher *W;
… …
368typedef ev_watcher_time *WT; 899typedef ev_watcher_time *WT;
369 900
370#define ev_active(w) ((W)(w))->active 901#define ev_active(w) ((W)(w))->active
371#define ev_at(w) ((WT)(w))->at 902#define ev_at(w) ((WT)(w))->at
372 903
904#if EV_USE_REALTIME
905/* sig_atomic_t is used to avoid per-thread variables or locking but still */
906/* giving it a reasonably high chance of working on typical architectures */
907static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
908#endif
909
373#if EV_USE_MONOTONIC 910#if EV_USE_MONOTONIC
374/* sig_atomic_t is used to avoid per-thread variables or locking but still */
375/* giving it a reasonably high chance of working on typical architetcures */
376static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 911static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
912#endif
913
914#ifndef EV_FD_TO_WIN32_HANDLE
915# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
916#endif
917#ifndef EV_WIN32_HANDLE_TO_FD
918# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
919#endif
920#ifndef EV_WIN32_CLOSE_FD
921# define EV_WIN32_CLOSE_FD(fd) close (fd)
377#endif 922#endif
378 923
379#ifdef _WIN32 924#ifdef _WIN32
380# include "ev_win32.c" 925# include "ev_win32.c"
381#endif 926#endif
382 927
383/*****************************************************************************/ 928/*****************************************************************************/
384 929
930/* define a suitable floor function (only used by periodics atm) */
931
932#if EV_USE_FLOOR
933# include <math.h>
934# define ev_floor(v) floor (v)
935#else
936
937#include <float.h>
938
939/* a floor() replacement function, should be independent of ev_tstamp type */
940static ev_tstamp noinline
941ev_floor (ev_tstamp v)
942{
943 /* the choice of shift factor is not terribly important */
944#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
945 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
946#else
947 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
948#endif
949
950 /* argument too large for an unsigned long? */
951 if (expect_false (v >= shift))
952 {
953 ev_tstamp f;
954
955 if (v == v - 1.)
956 return v; /* very large number */
957
958 f = shift * ev_floor (v * (1. / shift));
959 return f + ev_floor (v - f);
960 }
961
962 /* special treatment for negative args? */
963 if (expect_false (v < 0.))
964 {
965 ev_tstamp f = -ev_floor (-v);
966
967 return f - (f == v ? 0 : 1);
968 }
969
970 /* fits into an unsigned long */
971 return (unsigned long)v;
972}
973
974#endif
975
976/*****************************************************************************/
977
978#ifdef __linux
979# include <sys/utsname.h>
980#endif
981
982static unsigned int noinline ecb_cold
983ev_linux_version (void)
984{
985#ifdef __linux
986 unsigned int v = 0;
987 struct utsname buf;
988 int i;
989 char *p = buf.release;
990
991 if (uname (&buf))
992 return 0;
993
994 for (i = 3+1; --i; )
995 {
996 unsigned int c = 0;
997
998 for (;;)
999 {
1000 if (*p >= '0' && *p <= '9')
1001 c = c * 10 + *p++ - '0';
1002 else
1003 {
1004 p += *p == '.';
1005 break;
1006 }
1007 }
1008
1009 v = (v << 8) | c;
1010 }
1011
1012 return v;
1013#else
1014 return 0;
1015#endif
1016}
1017
1018/*****************************************************************************/
1019
1020#if EV_AVOID_STDIO
1021static void noinline ecb_cold
1022ev_printerr (const char *msg)
1023{
1024 write (STDERR_FILENO, msg, strlen (msg));
1025}
1026#endif
1027
385static void (*syserr_cb)(const char *msg); 1028static void (*syserr_cb)(const char *msg);
386 1029
387void 1030void ecb_cold
388ev_set_syserr_cb (void (*cb)(const char *msg)) 1031ev_set_syserr_cb (void (*cb)(const char *msg))
389{ 1032{
390 syserr_cb = cb; 1033 syserr_cb = cb;
391} 1034}
392 1035
393static void noinline 1036static void noinline ecb_cold
394ev_syserr (const char *msg) 1037ev_syserr (const char *msg)
395{ 1038{
396 if (!msg) 1039 if (!msg)
397 msg = "(libev) system error"; 1040 msg = "(libev) system error";
398 1041
399 if (syserr_cb) 1042 if (syserr_cb)
400 syserr_cb (msg); 1043 syserr_cb (msg);
401 else 1044 else
402 { 1045 {
1046#if EV_AVOID_STDIO
1047 ev_printerr (msg);
1048 ev_printerr (": ");
1049 ev_printerr (strerror (errno));
1050 ev_printerr ("\n");
1051#else
403 perror (msg); 1052 perror (msg);
1053#endif
404 abort (); 1054 abort ();
405 } 1055 }
406} 1056}
407 1057
408static void * 1058static void *
409ev_realloc_emul (void *ptr, long size) 1059ev_realloc_emul (void *ptr, long size)
410{ 1060{
1061#if __GLIBC__
1062 return realloc (ptr, size);
1063#else
411 /* some systems, notably openbsd and darwin, fail to properly 1064 /* some systems, notably openbsd and darwin, fail to properly
412 * implement realloc (x, 0) (as required by both ansi c-98 and 1065 * implement realloc (x, 0) (as required by both ansi c-89 and
413 * the single unix specification, so work around them here. 1066 * the single unix specification, so work around them here.
414 */ 1067 */
415 1068
416 if (size) 1069 if (size)
417 return realloc (ptr, size); 1070 return realloc (ptr, size);
418 1071
419 free (ptr); 1072 free (ptr);
420 return 0; 1073 return 0;
1074#endif
421} 1075}
422 1076
423static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1077static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
424 1078
425void 1079void ecb_cold
426ev_set_allocator (void *(*cb)(void *ptr, long size)) 1080ev_set_allocator (void *(*cb)(void *ptr, long size))
427{ 1081{
428 alloc = cb; 1082 alloc = cb;
429} 1083}
430 1084
… …
433{ 1087{
434 ptr = alloc (ptr, size); 1088 ptr = alloc (ptr, size);
435 1089
436 if (!ptr && size) 1090 if (!ptr && size)
437 { 1091 {
1092#if EV_AVOID_STDIO
1093 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1094#else
438 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1095 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1096#endif
439 abort (); 1097 abort ();
440 } 1098 }
441 1099
442 return ptr; 1100 return ptr;
443} 1101}
… …
445#define ev_malloc(size) ev_realloc (0, (size)) 1103#define ev_malloc(size) ev_realloc (0, (size))
446#define ev_free(ptr) ev_realloc ((ptr), 0) 1104#define ev_free(ptr) ev_realloc ((ptr), 0)
447 1105
448/*****************************************************************************/ 1106/*****************************************************************************/
449 1107
1108/* set in reify when reification needed */
1109#define EV_ANFD_REIFY 1
1110
1111/* file descriptor info structure */
450typedef struct 1112typedef struct
451{ 1113{
452 WL head; 1114 WL head;
453 unsigned char events; 1115 unsigned char events; /* the events watched for */
454 unsigned char reify; 1116 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
455 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1117 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
456 unsigned char unused; 1118 unsigned char unused;
457#if EV_USE_EPOLL 1119#if EV_USE_EPOLL
458 unsigned int egen; /* generation counter to counter epoll bugs */ 1120 unsigned int egen; /* generation counter to counter epoll bugs */
459#endif 1121#endif
460#if EV_SELECT_IS_WINSOCKET 1122#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
461 SOCKET handle; 1123 SOCKET handle;
462#endif 1124#endif
1125#if EV_USE_IOCP
1126 OVERLAPPED or, ow;
1127#endif
463} ANFD; 1128} ANFD;
464 1129
1130/* stores the pending event set for a given watcher */
465typedef struct 1131typedef struct
466{ 1132{
467 W w; 1133 W w;
468 int events; 1134 int events; /* the pending event set for the given watcher */
469} ANPENDING; 1135} ANPENDING;
470 1136
471#if EV_USE_INOTIFY 1137#if EV_USE_INOTIFY
472/* hash table entry per inotify-id */ 1138/* hash table entry per inotify-id */
473typedef struct 1139typedef struct
… …
476} ANFS; 1142} ANFS;
477#endif 1143#endif
478 1144
479/* Heap Entry */ 1145/* Heap Entry */
480#if EV_HEAP_CACHE_AT 1146#if EV_HEAP_CACHE_AT
1147 /* a heap element */
481 typedef struct { 1148 typedef struct {
482 ev_tstamp at; 1149 ev_tstamp at;
483 WT w; 1150 WT w;
484 } ANHE; 1151 } ANHE;
485 1152
486 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1153 #define ANHE_w(he) (he).w /* access watcher, read-write */
487 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1154 #define ANHE_at(he) (he).at /* access cached at, read-only */
488 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 1155 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
489#else 1156#else
1157 /* a heap element */
490 typedef WT ANHE; 1158 typedef WT ANHE;
491 1159
492 #define ANHE_w(he) (he) 1160 #define ANHE_w(he) (he)
493 #define ANHE_at(he) (he)->at 1161 #define ANHE_at(he) (he)->at
494 #define ANHE_at_cache(he) 1162 #define ANHE_at_cache(he)
… …
518 1186
519 static int ev_default_loop_ptr; 1187 static int ev_default_loop_ptr;
520 1188
521#endif 1189#endif
522 1190
1191#if EV_FEATURE_API
1192# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1193# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1194# define EV_INVOKE_PENDING invoke_cb (EV_A)
1195#else
1196# define EV_RELEASE_CB (void)0
1197# define EV_ACQUIRE_CB (void)0
1198# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1199#endif
1200
1201#define EVBREAK_RECURSE 0x80
1202
523/*****************************************************************************/ 1203/*****************************************************************************/
524 1204
1205#ifndef EV_HAVE_EV_TIME
525ev_tstamp 1206ev_tstamp
526ev_time (void) 1207ev_time (void)
527{ 1208{
528#if EV_USE_REALTIME 1209#if EV_USE_REALTIME
1210 if (expect_true (have_realtime))
1211 {
529 struct timespec ts; 1212 struct timespec ts;
530 clock_gettime (CLOCK_REALTIME, &ts); 1213 clock_gettime (CLOCK_REALTIME, &ts);
531 return ts.tv_sec + ts.tv_nsec * 1e-9; 1214 return ts.tv_sec + ts.tv_nsec * 1e-9;
532#else 1215 }
1216#endif
1217
533 struct timeval tv; 1218 struct timeval tv;
534 gettimeofday (&tv, 0); 1219 gettimeofday (&tv, 0);
535 return tv.tv_sec + tv.tv_usec * 1e-6; 1220 return tv.tv_sec + tv.tv_usec * 1e-6;
536#endif
537} 1221}
1222#endif
538 1223
539ev_tstamp inline_size 1224inline_size ev_tstamp
540get_clock (void) 1225get_clock (void)
541{ 1226{
542#if EV_USE_MONOTONIC 1227#if EV_USE_MONOTONIC
543 if (expect_true (have_monotonic)) 1228 if (expect_true (have_monotonic))
544 { 1229 {
… …
565 if (delay > 0.) 1250 if (delay > 0.)
566 { 1251 {
567#if EV_USE_NANOSLEEP 1252#if EV_USE_NANOSLEEP
568 struct timespec ts; 1253 struct timespec ts;
569 1254
570 ts.tv_sec = (time_t)delay; 1255 EV_TS_SET (ts, delay);
571 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
572
573 nanosleep (&ts, 0); 1256 nanosleep (&ts, 0);
574#elif defined(_WIN32) 1257#elif defined(_WIN32)
575 Sleep ((unsigned long)(delay * 1e3)); 1258 Sleep ((unsigned long)(delay * 1e3));
576#else 1259#else
577 struct timeval tv; 1260 struct timeval tv;
578 1261
579 tv.tv_sec = (time_t)delay;
580 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
581
582 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1262 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
583 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1263 /* something not guaranteed by newer posix versions, but guaranteed */
584 /* by older ones */ 1264 /* by older ones */
1265 EV_TV_SET (tv, delay);
585 select (0, 0, 0, 0, &tv); 1266 select (0, 0, 0, 0, &tv);
586#endif 1267#endif
587 } 1268 }
588} 1269}
589 1270
590/*****************************************************************************/ 1271/*****************************************************************************/
591 1272
592#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1273#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
593 1274
594int inline_size 1275/* find a suitable new size for the given array, */
1276/* hopefully by rounding to a nice-to-malloc size */
1277inline_size int
595array_nextsize (int elem, int cur, int cnt) 1278array_nextsize (int elem, int cur, int cnt)
596{ 1279{
597 int ncur = cur + 1; 1280 int ncur = cur + 1;
598 1281
599 do 1282 do
… …
610 } 1293 }
611 1294
612 return ncur; 1295 return ncur;
613} 1296}
614 1297
615static noinline void * 1298static void * noinline ecb_cold
616array_realloc (int elem, void *base, int *cur, int cnt) 1299array_realloc (int elem, void *base, int *cur, int cnt)
617{ 1300{
618 *cur = array_nextsize (elem, *cur, cnt); 1301 *cur = array_nextsize (elem, *cur, cnt);
619 return ev_realloc (base, elem * *cur); 1302 return ev_realloc (base, elem * *cur);
620} 1303}
… …
623 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1306 memset ((void *)(base), 0, sizeof (*(base)) * (count))
624 1307
625#define array_needsize(type,base,cur,cnt,init) \ 1308#define array_needsize(type,base,cur,cnt,init) \
626 if (expect_false ((cnt) > (cur))) \ 1309 if (expect_false ((cnt) > (cur))) \
627 { \ 1310 { \
628 int ocur_ = (cur); \ 1311 int ecb_unused ocur_ = (cur); \
629 (base) = (type *)array_realloc \ 1312 (base) = (type *)array_realloc \
630 (sizeof (type), (base), &(cur), (cnt)); \ 1313 (sizeof (type), (base), &(cur), (cnt)); \
631 init ((base) + (ocur_), (cur) - ocur_); \ 1314 init ((base) + (ocur_), (cur) - ocur_); \
632 } 1315 }
633 1316
… …
640 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1323 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
641 } 1324 }
642#endif 1325#endif
643 1326
644#define array_free(stem, idx) \ 1327#define array_free(stem, idx) \
645 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1328 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
646 1329
647/*****************************************************************************/ 1330/*****************************************************************************/
1331
1332/* dummy callback for pending events */
1333static void noinline
1334pendingcb (EV_P_ ev_prepare *w, int revents)
1335{
1336}
648 1337
649void noinline 1338void noinline
650ev_feed_event (EV_P_ void *w, int revents) 1339ev_feed_event (EV_P_ void *w, int revents)
651{ 1340{
652 W w_ = (W)w; 1341 W w_ = (W)w;
… …
661 pendings [pri][w_->pending - 1].w = w_; 1350 pendings [pri][w_->pending - 1].w = w_;
662 pendings [pri][w_->pending - 1].events = revents; 1351 pendings [pri][w_->pending - 1].events = revents;
663 } 1352 }
664} 1353}
665 1354
666void inline_speed 1355inline_speed void
1356feed_reverse (EV_P_ W w)
1357{
1358 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1359 rfeeds [rfeedcnt++] = w;
1360}
1361
1362inline_size void
1363feed_reverse_done (EV_P_ int revents)
1364{
1365 do
1366 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1367 while (rfeedcnt);
1368}
1369
1370inline_speed void
667queue_events (EV_P_ W *events, int eventcnt, int type) 1371queue_events (EV_P_ W *events, int eventcnt, int type)
668{ 1372{
669 int i; 1373 int i;
670 1374
671 for (i = 0; i < eventcnt; ++i) 1375 for (i = 0; i < eventcnt; ++i)
672 ev_feed_event (EV_A_ events [i], type); 1376 ev_feed_event (EV_A_ events [i], type);
673} 1377}
674 1378
675/*****************************************************************************/ 1379/*****************************************************************************/
676 1380
677void inline_speed 1381inline_speed void
678fd_event (EV_P_ int fd, int revents) 1382fd_event_nocheck (EV_P_ int fd, int revents)
679{ 1383{
680 ANFD *anfd = anfds + fd; 1384 ANFD *anfd = anfds + fd;
681 ev_io *w; 1385 ev_io *w;
682 1386
683 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1387 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
687 if (ev) 1391 if (ev)
688 ev_feed_event (EV_A_ (W)w, ev); 1392 ev_feed_event (EV_A_ (W)w, ev);
689 } 1393 }
690} 1394}
691 1395
1396/* do not submit kernel events for fds that have reify set */
1397/* because that means they changed while we were polling for new events */
1398inline_speed void
1399fd_event (EV_P_ int fd, int revents)
1400{
1401 ANFD *anfd = anfds + fd;
1402
1403 if (expect_true (!anfd->reify))
1404 fd_event_nocheck (EV_A_ fd, revents);
1405}
1406
692void 1407void
693ev_feed_fd_event (EV_P_ int fd, int revents) 1408ev_feed_fd_event (EV_P_ int fd, int revents)
694{ 1409{
695 if (fd >= 0 && fd < anfdmax) 1410 if (fd >= 0 && fd < anfdmax)
696 fd_event (EV_A_ fd, revents); 1411 fd_event_nocheck (EV_A_ fd, revents);
697} 1412}
698 1413
699void inline_size 1414/* make sure the external fd watch events are in-sync */
1415/* with the kernel/libev internal state */
1416inline_size void
700fd_reify (EV_P) 1417fd_reify (EV_P)
701{ 1418{
702 int i; 1419 int i;
1420
1421#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1422 for (i = 0; i < fdchangecnt; ++i)
1423 {
1424 int fd = fdchanges [i];
1425 ANFD *anfd = anfds + fd;
1426
1427 if (anfd->reify & EV__IOFDSET && anfd->head)
1428 {
1429 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1430
1431 if (handle != anfd->handle)
1432 {
1433 unsigned long arg;
1434
1435 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1436
1437 /* handle changed, but fd didn't - we need to do it in two steps */
1438 backend_modify (EV_A_ fd, anfd->events, 0);
1439 anfd->events = 0;
1440 anfd->handle = handle;
1441 }
1442 }
1443 }
1444#endif
703 1445
704 for (i = 0; i < fdchangecnt; ++i) 1446 for (i = 0; i < fdchangecnt; ++i)
705 { 1447 {
706 int fd = fdchanges [i]; 1448 int fd = fdchanges [i];
707 ANFD *anfd = anfds + fd; 1449 ANFD *anfd = anfds + fd;
708 ev_io *w; 1450 ev_io *w;
709 1451
710 unsigned char events = 0; 1452 unsigned char o_events = anfd->events;
1453 unsigned char o_reify = anfd->reify;
711 1454
712 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1455 anfd->reify = 0;
713 events |= (unsigned char)w->events;
714 1456
715#if EV_SELECT_IS_WINSOCKET 1457 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
716 if (events)
717 { 1458 {
718 unsigned long arg; 1459 anfd->events = 0;
719 #ifdef EV_FD_TO_WIN32_HANDLE 1460
720 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1461 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
721 #else 1462 anfd->events |= (unsigned char)w->events;
722 anfd->handle = _get_osfhandle (fd); 1463
723 #endif 1464 if (o_events != anfd->events)
724 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1465 o_reify = EV__IOFDSET; /* actually |= */
725 } 1466 }
726#endif
727 1467
728 { 1468 if (o_reify & EV__IOFDSET)
729 unsigned char o_events = anfd->events;
730 unsigned char o_reify = anfd->reify;
731
732 anfd->reify = 0;
733 anfd->events = events;
734
735 if (o_events != events || o_reify & EV_IOFDSET)
736 backend_modify (EV_A_ fd, o_events, events); 1469 backend_modify (EV_A_ fd, o_events, anfd->events);
737 }
738 } 1470 }
739 1471
740 fdchangecnt = 0; 1472 fdchangecnt = 0;
741} 1473}
742 1474
743void inline_size 1475/* something about the given fd changed */
1476inline_size void
744fd_change (EV_P_ int fd, int flags) 1477fd_change (EV_P_ int fd, int flags)
745{ 1478{
746 unsigned char reify = anfds [fd].reify; 1479 unsigned char reify = anfds [fd].reify;
747 anfds [fd].reify |= flags; 1480 anfds [fd].reify |= flags;
748 1481
… …
752 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1485 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
753 fdchanges [fdchangecnt - 1] = fd; 1486 fdchanges [fdchangecnt - 1] = fd;
754 } 1487 }
755} 1488}
756 1489
757void inline_speed 1490/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1491inline_speed void ecb_cold
758fd_kill (EV_P_ int fd) 1492fd_kill (EV_P_ int fd)
759{ 1493{
760 ev_io *w; 1494 ev_io *w;
761 1495
762 while ((w = (ev_io *)anfds [fd].head)) 1496 while ((w = (ev_io *)anfds [fd].head))
… …
764 ev_io_stop (EV_A_ w); 1498 ev_io_stop (EV_A_ w);
765 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1499 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
766 } 1500 }
767} 1501}
768 1502
769int inline_size 1503/* check whether the given fd is actually valid, for error recovery */
1504inline_size int ecb_cold
770fd_valid (int fd) 1505fd_valid (int fd)
771{ 1506{
772#ifdef _WIN32 1507#ifdef _WIN32
773 return _get_osfhandle (fd) != -1; 1508 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
774#else 1509#else
775 return fcntl (fd, F_GETFD) != -1; 1510 return fcntl (fd, F_GETFD) != -1;
776#endif 1511#endif
777} 1512}
778 1513
779/* called on EBADF to verify fds */ 1514/* called on EBADF to verify fds */
780static void noinline 1515static void noinline ecb_cold
781fd_ebadf (EV_P) 1516fd_ebadf (EV_P)
782{ 1517{
783 int fd; 1518 int fd;
784 1519
785 for (fd = 0; fd < anfdmax; ++fd) 1520 for (fd = 0; fd < anfdmax; ++fd)
… …
787 if (!fd_valid (fd) && errno == EBADF) 1522 if (!fd_valid (fd) && errno == EBADF)
788 fd_kill (EV_A_ fd); 1523 fd_kill (EV_A_ fd);
789} 1524}
790 1525
791/* called on ENOMEM in select/poll to kill some fds and retry */ 1526/* called on ENOMEM in select/poll to kill some fds and retry */
792static void noinline 1527static void noinline ecb_cold
793fd_enomem (EV_P) 1528fd_enomem (EV_P)
794{ 1529{
795 int fd; 1530 int fd;
796 1531
797 for (fd = anfdmax; fd--; ) 1532 for (fd = anfdmax; fd--; )
798 if (anfds [fd].events) 1533 if (anfds [fd].events)
799 { 1534 {
800 fd_kill (EV_A_ fd); 1535 fd_kill (EV_A_ fd);
801 return; 1536 break;
802 } 1537 }
803} 1538}
804 1539
805/* usually called after fork if backend needs to re-arm all fds from scratch */ 1540/* usually called after fork if backend needs to re-arm all fds from scratch */
806static void noinline 1541static void noinline
… …
811 for (fd = 0; fd < anfdmax; ++fd) 1546 for (fd = 0; fd < anfdmax; ++fd)
812 if (anfds [fd].events) 1547 if (anfds [fd].events)
813 { 1548 {
814 anfds [fd].events = 0; 1549 anfds [fd].events = 0;
815 anfds [fd].emask = 0; 1550 anfds [fd].emask = 0;
816 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1551 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
817 } 1552 }
818} 1553}
819 1554
1555/* used to prepare libev internal fd's */
1556/* this is not fork-safe */
1557inline_speed void
1558fd_intern (int fd)
1559{
1560#ifdef _WIN32
1561 unsigned long arg = 1;
1562 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1563#else
1564 fcntl (fd, F_SETFD, FD_CLOEXEC);
1565 fcntl (fd, F_SETFL, O_NONBLOCK);
1566#endif
1567}
1568
820/*****************************************************************************/ 1569/*****************************************************************************/
821 1570
822/* 1571/*
823 * the heap functions want a real array index. array index 0 uis guaranteed to not 1572 * the heap functions want a real array index. array index 0 is guaranteed to not
824 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1573 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
825 * the branching factor of the d-tree. 1574 * the branching factor of the d-tree.
826 */ 1575 */
827 1576
828/* 1577/*
… …
837#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1586#define HEAP0 (DHEAP - 1) /* index of first element in heap */
838#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1587#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
839#define UPHEAP_DONE(p,k) ((p) == (k)) 1588#define UPHEAP_DONE(p,k) ((p) == (k))
840 1589
841/* away from the root */ 1590/* away from the root */
842void inline_speed 1591inline_speed void
843downheap (ANHE *heap, int N, int k) 1592downheap (ANHE *heap, int N, int k)
844{ 1593{
845 ANHE he = heap [k]; 1594 ANHE he = heap [k];
846 ANHE *E = heap + N + HEAP0; 1595 ANHE *E = heap + N + HEAP0;
847 1596
… …
887#define HEAP0 1 1636#define HEAP0 1
888#define HPARENT(k) ((k) >> 1) 1637#define HPARENT(k) ((k) >> 1)
889#define UPHEAP_DONE(p,k) (!(p)) 1638#define UPHEAP_DONE(p,k) (!(p))
890 1639
891/* away from the root */ 1640/* away from the root */
892void inline_speed 1641inline_speed void
893downheap (ANHE *heap, int N, int k) 1642downheap (ANHE *heap, int N, int k)
894{ 1643{
895 ANHE he = heap [k]; 1644 ANHE he = heap [k];
896 1645
897 for (;;) 1646 for (;;)
898 { 1647 {
899 int c = k << 1; 1648 int c = k << 1;
900 1649
901 if (c > N + HEAP0 - 1) 1650 if (c >= N + HEAP0)
902 break; 1651 break;
903 1652
904 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1653 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
905 ? 1 : 0; 1654 ? 1 : 0;
906 1655
… …
917 ev_active (ANHE_w (he)) = k; 1666 ev_active (ANHE_w (he)) = k;
918} 1667}
919#endif 1668#endif
920 1669
921/* towards the root */ 1670/* towards the root */
922void inline_speed 1671inline_speed void
923upheap (ANHE *heap, int k) 1672upheap (ANHE *heap, int k)
924{ 1673{
925 ANHE he = heap [k]; 1674 ANHE he = heap [k];
926 1675
927 for (;;) 1676 for (;;)
… …
938 1687
939 heap [k] = he; 1688 heap [k] = he;
940 ev_active (ANHE_w (he)) = k; 1689 ev_active (ANHE_w (he)) = k;
941} 1690}
942 1691
943void inline_size 1692/* move an element suitably so it is in a correct place */
1693inline_size void
944adjustheap (ANHE *heap, int N, int k) 1694adjustheap (ANHE *heap, int N, int k)
945{ 1695{
946 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1696 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
947 upheap (heap, k); 1697 upheap (heap, k);
948 else 1698 else
949 downheap (heap, N, k); 1699 downheap (heap, N, k);
950} 1700}
951 1701
952/* rebuild the heap: this function is used only once and executed rarely */ 1702/* rebuild the heap: this function is used only once and executed rarely */
953void inline_size 1703inline_size void
954reheap (ANHE *heap, int N) 1704reheap (ANHE *heap, int N)
955{ 1705{
956 int i; 1706 int i;
957 1707
958 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1708 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
961 upheap (heap, i + HEAP0); 1711 upheap (heap, i + HEAP0);
962} 1712}
963 1713
964/*****************************************************************************/ 1714/*****************************************************************************/
965 1715
1716/* associate signal watchers to a signal signal */
966typedef struct 1717typedef struct
967{ 1718{
1719 EV_ATOMIC_T pending;
1720#if EV_MULTIPLICITY
1721 EV_P;
1722#endif
968 WL head; 1723 WL head;
969 EV_ATOMIC_T gotsig;
970} ANSIG; 1724} ANSIG;
971 1725
972static ANSIG *signals; 1726static ANSIG signals [EV_NSIG - 1];
973static int signalmax;
974
975static EV_ATOMIC_T gotsig;
976 1727
977/*****************************************************************************/ 1728/*****************************************************************************/
978 1729
979void inline_speed 1730#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
980fd_intern (int fd)
981{
982#ifdef _WIN32
983 unsigned long arg = 1;
984 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
985#else
986 fcntl (fd, F_SETFD, FD_CLOEXEC);
987 fcntl (fd, F_SETFL, O_NONBLOCK);
988#endif
989}
990 1731
991static void noinline 1732static void noinline ecb_cold
992evpipe_init (EV_P) 1733evpipe_init (EV_P)
993{ 1734{
994 if (!ev_is_active (&pipeev)) 1735 if (!ev_is_active (&pipe_w))
995 { 1736 {
996#if EV_USE_EVENTFD 1737# if EV_USE_EVENTFD
1738 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1739 if (evfd < 0 && errno == EINVAL)
997 if ((evfd = eventfd (0, 0)) >= 0) 1740 evfd = eventfd (0, 0);
1741
1742 if (evfd >= 0)
998 { 1743 {
999 evpipe [0] = -1; 1744 evpipe [0] = -1;
1000 fd_intern (evfd); 1745 fd_intern (evfd); /* doing it twice doesn't hurt */
1001 ev_io_set (&pipeev, evfd, EV_READ); 1746 ev_io_set (&pipe_w, evfd, EV_READ);
1002 } 1747 }
1003 else 1748 else
1004#endif 1749# endif
1005 { 1750 {
1006 while (pipe (evpipe)) 1751 while (pipe (evpipe))
1007 ev_syserr ("(libev) error creating signal/async pipe"); 1752 ev_syserr ("(libev) error creating signal/async pipe");
1008 1753
1009 fd_intern (evpipe [0]); 1754 fd_intern (evpipe [0]);
1010 fd_intern (evpipe [1]); 1755 fd_intern (evpipe [1]);
1011 ev_io_set (&pipeev, evpipe [0], EV_READ); 1756 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1012 } 1757 }
1013 1758
1014 ev_io_start (EV_A_ &pipeev); 1759 ev_io_start (EV_A_ &pipe_w);
1015 ev_unref (EV_A); /* watcher should not keep loop alive */ 1760 ev_unref (EV_A); /* watcher should not keep loop alive */
1016 } 1761 }
1017} 1762}
1018 1763
1019void inline_size 1764inline_speed void
1020evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1765evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1021{ 1766{
1022 if (!*flag) 1767 if (expect_true (*flag))
1768 return;
1769
1770 *flag = 1;
1771
1772 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1773
1774 pipe_write_skipped = 1;
1775
1776 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1777
1778 if (pipe_write_wanted)
1023 { 1779 {
1780 int old_errno;
1781
1782 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1783
1024 int old_errno = errno; /* save errno because write might clobber it */ 1784 old_errno = errno; /* save errno because write will clobber it */
1025
1026 *flag = 1;
1027 1785
1028#if EV_USE_EVENTFD 1786#if EV_USE_EVENTFD
1029 if (evfd >= 0) 1787 if (evfd >= 0)
1030 { 1788 {
1031 uint64_t counter = 1; 1789 uint64_t counter = 1;
1032 write (evfd, &counter, sizeof (uint64_t)); 1790 write (evfd, &counter, sizeof (uint64_t));
1033 } 1791 }
1034 else 1792 else
1035#endif 1793#endif
1794 {
1795 /* win32 people keep sending patches that change this write() to send() */
1796 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1797 /* so when you think this write should be a send instead, please find out */
1798 /* where your send() is from - it's definitely not the microsoft send, and */
1799 /* tell me. thank you. */
1036 write (evpipe [1], &old_errno, 1); 1800 write (evpipe [1], &(evpipe [1]), 1);
1801 }
1037 1802
1038 errno = old_errno; 1803 errno = old_errno;
1039 } 1804 }
1040} 1805}
1041 1806
1807/* called whenever the libev signal pipe */
1808/* got some events (signal, async) */
1042static void 1809static void
1043pipecb (EV_P_ ev_io *iow, int revents) 1810pipecb (EV_P_ ev_io *iow, int revents)
1044{ 1811{
1812 int i;
1813
1814 if (revents & EV_READ)
1815 {
1045#if EV_USE_EVENTFD 1816#if EV_USE_EVENTFD
1046 if (evfd >= 0) 1817 if (evfd >= 0)
1047 { 1818 {
1048 uint64_t counter; 1819 uint64_t counter;
1049 read (evfd, &counter, sizeof (uint64_t)); 1820 read (evfd, &counter, sizeof (uint64_t));
1050 } 1821 }
1051 else 1822 else
1052#endif 1823#endif
1053 { 1824 {
1054 char dummy; 1825 char dummy;
1826 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1055 read (evpipe [0], &dummy, 1); 1827 read (evpipe [0], &dummy, 1);
1828 }
1829 }
1830
1831 pipe_write_skipped = 0;
1832
1833#if EV_SIGNAL_ENABLE
1834 if (sig_pending)
1056 } 1835 {
1836 sig_pending = 0;
1057 1837
1058 if (gotsig && ev_is_default_loop (EV_A)) 1838 for (i = EV_NSIG - 1; i--; )
1059 { 1839 if (expect_false (signals [i].pending))
1060 int signum;
1061 gotsig = 0;
1062
1063 for (signum = signalmax; signum--; )
1064 if (signals [signum].gotsig)
1065 ev_feed_signal_event (EV_A_ signum + 1); 1840 ev_feed_signal_event (EV_A_ i + 1);
1066 } 1841 }
1842#endif
1067 1843
1068#if EV_ASYNC_ENABLE 1844#if EV_ASYNC_ENABLE
1069 if (gotasync) 1845 if (async_pending)
1070 { 1846 {
1071 int i; 1847 async_pending = 0;
1072 gotasync = 0;
1073 1848
1074 for (i = asynccnt; i--; ) 1849 for (i = asynccnt; i--; )
1075 if (asyncs [i]->sent) 1850 if (asyncs [i]->sent)
1076 { 1851 {
1077 asyncs [i]->sent = 0; 1852 asyncs [i]->sent = 0;
… …
1081#endif 1856#endif
1082} 1857}
1083 1858
1084/*****************************************************************************/ 1859/*****************************************************************************/
1085 1860
1861void
1862ev_feed_signal (int signum)
1863{
1864#if EV_MULTIPLICITY
1865 EV_P = signals [signum - 1].loop;
1866
1867 if (!EV_A)
1868 return;
1869#endif
1870
1871 if (!ev_active (&pipe_w))
1872 return;
1873
1874 signals [signum - 1].pending = 1;
1875 evpipe_write (EV_A_ &sig_pending);
1876}
1877
1086static void 1878static void
1087ev_sighandler (int signum) 1879ev_sighandler (int signum)
1088{ 1880{
1089#if EV_MULTIPLICITY
1090 struct ev_loop *loop = &default_loop_struct;
1091#endif
1092
1093#if _WIN32 1881#ifdef _WIN32
1094 signal (signum, ev_sighandler); 1882 signal (signum, ev_sighandler);
1095#endif 1883#endif
1096 1884
1097 signals [signum - 1].gotsig = 1; 1885 ev_feed_signal (signum);
1098 evpipe_write (EV_A_ &gotsig);
1099} 1886}
1100 1887
1101void noinline 1888void noinline
1102ev_feed_signal_event (EV_P_ int signum) 1889ev_feed_signal_event (EV_P_ int signum)
1103{ 1890{
1104 WL w; 1891 WL w;
1105 1892
1893 if (expect_false (signum <= 0 || signum > EV_NSIG))
1894 return;
1895
1896 --signum;
1897
1106#if EV_MULTIPLICITY 1898#if EV_MULTIPLICITY
1107 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1899 /* it is permissible to try to feed a signal to the wrong loop */
1108#endif 1900 /* or, likely more useful, feeding a signal nobody is waiting for */
1109 1901
1110 --signum; 1902 if (expect_false (signals [signum].loop != EV_A))
1111
1112 if (signum < 0 || signum >= signalmax)
1113 return; 1903 return;
1904#endif
1114 1905
1115 signals [signum].gotsig = 0; 1906 signals [signum].pending = 0;
1116 1907
1117 for (w = signals [signum].head; w; w = w->next) 1908 for (w = signals [signum].head; w; w = w->next)
1118 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1909 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1119} 1910}
1120 1911
1912#if EV_USE_SIGNALFD
1913static void
1914sigfdcb (EV_P_ ev_io *iow, int revents)
1915{
1916 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1917
1918 for (;;)
1919 {
1920 ssize_t res = read (sigfd, si, sizeof (si));
1921
1922 /* not ISO-C, as res might be -1, but works with SuS */
1923 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1924 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1925
1926 if (res < (ssize_t)sizeof (si))
1927 break;
1928 }
1929}
1930#endif
1931
1932#endif
1933
1121/*****************************************************************************/ 1934/*****************************************************************************/
1122 1935
1936#if EV_CHILD_ENABLE
1123static WL childs [EV_PID_HASHSIZE]; 1937static WL childs [EV_PID_HASHSIZE];
1124
1125#ifndef _WIN32
1126 1938
1127static ev_signal childev; 1939static ev_signal childev;
1128 1940
1129#ifndef WIFCONTINUED 1941#ifndef WIFCONTINUED
1130# define WIFCONTINUED(status) 0 1942# define WIFCONTINUED(status) 0
1131#endif 1943#endif
1132 1944
1133void inline_speed 1945/* handle a single child status event */
1946inline_speed void
1134child_reap (EV_P_ int chain, int pid, int status) 1947child_reap (EV_P_ int chain, int pid, int status)
1135{ 1948{
1136 ev_child *w; 1949 ev_child *w;
1137 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1950 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1138 1951
1139 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1952 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1140 { 1953 {
1141 if ((w->pid == pid || !w->pid) 1954 if ((w->pid == pid || !w->pid)
1142 && (!traced || (w->flags & 1))) 1955 && (!traced || (w->flags & 1)))
1143 { 1956 {
1144 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1957 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1151 1964
1152#ifndef WCONTINUED 1965#ifndef WCONTINUED
1153# define WCONTINUED 0 1966# define WCONTINUED 0
1154#endif 1967#endif
1155 1968
1969/* called on sigchld etc., calls waitpid */
1156static void 1970static void
1157childcb (EV_P_ ev_signal *sw, int revents) 1971childcb (EV_P_ ev_signal *sw, int revents)
1158{ 1972{
1159 int pid, status; 1973 int pid, status;
1160 1974
… …
1168 /* make sure we are called again until all children have been reaped */ 1982 /* make sure we are called again until all children have been reaped */
1169 /* we need to do it this way so that the callback gets called before we continue */ 1983 /* we need to do it this way so that the callback gets called before we continue */
1170 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1984 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1171 1985
1172 child_reap (EV_A_ pid, pid, status); 1986 child_reap (EV_A_ pid, pid, status);
1173 if (EV_PID_HASHSIZE > 1) 1987 if ((EV_PID_HASHSIZE) > 1)
1174 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1988 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1175} 1989}
1176 1990
1177#endif 1991#endif
1178 1992
1179/*****************************************************************************/ 1993/*****************************************************************************/
1180 1994
1995#if EV_USE_IOCP
1996# include "ev_iocp.c"
1997#endif
1181#if EV_USE_PORT 1998#if EV_USE_PORT
1182# include "ev_port.c" 1999# include "ev_port.c"
1183#endif 2000#endif
1184#if EV_USE_KQUEUE 2001#if EV_USE_KQUEUE
1185# include "ev_kqueue.c" 2002# include "ev_kqueue.c"
… …
1192#endif 2009#endif
1193#if EV_USE_SELECT 2010#if EV_USE_SELECT
1194# include "ev_select.c" 2011# include "ev_select.c"
1195#endif 2012#endif
1196 2013
1197int 2014int ecb_cold
1198ev_version_major (void) 2015ev_version_major (void)
1199{ 2016{
1200 return EV_VERSION_MAJOR; 2017 return EV_VERSION_MAJOR;
1201} 2018}
1202 2019
1203int 2020int ecb_cold
1204ev_version_minor (void) 2021ev_version_minor (void)
1205{ 2022{
1206 return EV_VERSION_MINOR; 2023 return EV_VERSION_MINOR;
1207} 2024}
1208 2025
1209/* return true if we are running with elevated privileges and should ignore env variables */ 2026/* return true if we are running with elevated privileges and should ignore env variables */
1210int inline_size 2027int inline_size ecb_cold
1211enable_secure (void) 2028enable_secure (void)
1212{ 2029{
1213#ifdef _WIN32 2030#ifdef _WIN32
1214 return 0; 2031 return 0;
1215#else 2032#else
1216 return getuid () != geteuid () 2033 return getuid () != geteuid ()
1217 || getgid () != getegid (); 2034 || getgid () != getegid ();
1218#endif 2035#endif
1219} 2036}
1220 2037
1221unsigned int 2038unsigned int ecb_cold
1222ev_supported_backends (void) 2039ev_supported_backends (void)
1223{ 2040{
1224 unsigned int flags = 0; 2041 unsigned int flags = 0;
1225 2042
1226 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2043 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1230 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2047 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1231 2048
1232 return flags; 2049 return flags;
1233} 2050}
1234 2051
1235unsigned int 2052unsigned int ecb_cold
1236ev_recommended_backends (void) 2053ev_recommended_backends (void)
1237{ 2054{
1238 unsigned int flags = ev_supported_backends (); 2055 unsigned int flags = ev_supported_backends ();
1239 2056
1240#ifndef __NetBSD__ 2057#ifndef __NetBSD__
1241 /* kqueue is borked on everything but netbsd apparently */ 2058 /* kqueue is borked on everything but netbsd apparently */
1242 /* it usually doesn't work correctly on anything but sockets and pipes */ 2059 /* it usually doesn't work correctly on anything but sockets and pipes */
1243 flags &= ~EVBACKEND_KQUEUE; 2060 flags &= ~EVBACKEND_KQUEUE;
1244#endif 2061#endif
1245#ifdef __APPLE__ 2062#ifdef __APPLE__
1246 // flags &= ~EVBACKEND_KQUEUE; for documentation 2063 /* only select works correctly on that "unix-certified" platform */
1247 flags &= ~EVBACKEND_POLL; 2064 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
2065 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
2066#endif
2067#ifdef __FreeBSD__
2068 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1248#endif 2069#endif
1249 2070
1250 return flags; 2071 return flags;
1251} 2072}
1252 2073
1253unsigned int 2074unsigned int ecb_cold
1254ev_embeddable_backends (void) 2075ev_embeddable_backends (void)
1255{ 2076{
1256 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2077 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1257 2078
1258 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2079 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1259 /* please fix it and tell me how to detect the fix */ 2080 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1260 flags &= ~EVBACKEND_EPOLL; 2081 flags &= ~EVBACKEND_EPOLL;
1261 2082
1262 return flags; 2083 return flags;
1263} 2084}
1264 2085
1265unsigned int 2086unsigned int
1266ev_backend (EV_P) 2087ev_backend (EV_P)
1267{ 2088{
1268 return backend; 2089 return backend;
1269} 2090}
1270 2091
2092#if EV_FEATURE_API
1271unsigned int 2093unsigned int
1272ev_loop_count (EV_P) 2094ev_iteration (EV_P)
1273{ 2095{
1274 return loop_count; 2096 return loop_count;
2097}
2098
2099unsigned int
2100ev_depth (EV_P)
2101{
2102 return loop_depth;
1275} 2103}
1276 2104
1277void 2105void
1278ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2106ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1279{ 2107{
… …
1284ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2112ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1285{ 2113{
1286 timeout_blocktime = interval; 2114 timeout_blocktime = interval;
1287} 2115}
1288 2116
2117void
2118ev_set_userdata (EV_P_ void *data)
2119{
2120 userdata = data;
2121}
2122
2123void *
2124ev_userdata (EV_P)
2125{
2126 return userdata;
2127}
2128
2129void
2130ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
2131{
2132 invoke_cb = invoke_pending_cb;
2133}
2134
2135void
2136ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
2137{
2138 release_cb = release;
2139 acquire_cb = acquire;
2140}
2141#endif
2142
2143/* initialise a loop structure, must be zero-initialised */
1289static void noinline 2144static void noinline ecb_cold
1290loop_init (EV_P_ unsigned int flags) 2145loop_init (EV_P_ unsigned int flags)
1291{ 2146{
1292 if (!backend) 2147 if (!backend)
1293 { 2148 {
2149 origflags = flags;
2150
2151#if EV_USE_REALTIME
2152 if (!have_realtime)
2153 {
2154 struct timespec ts;
2155
2156 if (!clock_gettime (CLOCK_REALTIME, &ts))
2157 have_realtime = 1;
2158 }
2159#endif
2160
1294#if EV_USE_MONOTONIC 2161#if EV_USE_MONOTONIC
2162 if (!have_monotonic)
1295 { 2163 {
1296 struct timespec ts; 2164 struct timespec ts;
2165
1297 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2166 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1298 have_monotonic = 1; 2167 have_monotonic = 1;
1299 } 2168 }
1300#endif
1301
1302 ev_rt_now = ev_time ();
1303 mn_now = get_clock ();
1304 now_floor = mn_now;
1305 rtmn_diff = ev_rt_now - mn_now;
1306
1307 io_blocktime = 0.;
1308 timeout_blocktime = 0.;
1309 backend = 0;
1310 backend_fd = -1;
1311 gotasync = 0;
1312#if EV_USE_INOTIFY
1313 fs_fd = -2;
1314#endif 2169#endif
1315 2170
1316 /* pid check not overridable via env */ 2171 /* pid check not overridable via env */
1317#ifndef _WIN32 2172#ifndef _WIN32
1318 if (flags & EVFLAG_FORKCHECK) 2173 if (flags & EVFLAG_FORKCHECK)
… …
1322 if (!(flags & EVFLAG_NOENV) 2177 if (!(flags & EVFLAG_NOENV)
1323 && !enable_secure () 2178 && !enable_secure ()
1324 && getenv ("LIBEV_FLAGS")) 2179 && getenv ("LIBEV_FLAGS"))
1325 flags = atoi (getenv ("LIBEV_FLAGS")); 2180 flags = atoi (getenv ("LIBEV_FLAGS"));
1326 2181
1327 if (!(flags & 0x0000ffffU)) 2182 ev_rt_now = ev_time ();
2183 mn_now = get_clock ();
2184 now_floor = mn_now;
2185 rtmn_diff = ev_rt_now - mn_now;
2186#if EV_FEATURE_API
2187 invoke_cb = ev_invoke_pending;
2188#endif
2189
2190 io_blocktime = 0.;
2191 timeout_blocktime = 0.;
2192 backend = 0;
2193 backend_fd = -1;
2194 sig_pending = 0;
2195#if EV_ASYNC_ENABLE
2196 async_pending = 0;
2197#endif
2198 pipe_write_skipped = 0;
2199 pipe_write_wanted = 0;
2200#if EV_USE_INOTIFY
2201 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2202#endif
2203#if EV_USE_SIGNALFD
2204 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2205#endif
2206
2207 if (!(flags & EVBACKEND_MASK))
1328 flags |= ev_recommended_backends (); 2208 flags |= ev_recommended_backends ();
1329 2209
2210#if EV_USE_IOCP
2211 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2212#endif
1330#if EV_USE_PORT 2213#if EV_USE_PORT
1331 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2214 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1332#endif 2215#endif
1333#if EV_USE_KQUEUE 2216#if EV_USE_KQUEUE
1334 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2217 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1341#endif 2224#endif
1342#if EV_USE_SELECT 2225#if EV_USE_SELECT
1343 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2226 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1344#endif 2227#endif
1345 2228
2229 ev_prepare_init (&pending_w, pendingcb);
2230
2231#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1346 ev_init (&pipeev, pipecb); 2232 ev_init (&pipe_w, pipecb);
1347 ev_set_priority (&pipeev, EV_MAXPRI); 2233 ev_set_priority (&pipe_w, EV_MAXPRI);
2234#endif
1348 } 2235 }
1349} 2236}
1350 2237
1351static void noinline 2238/* free up a loop structure */
2239void ecb_cold
1352loop_destroy (EV_P) 2240ev_loop_destroy (EV_P)
1353{ 2241{
1354 int i; 2242 int i;
1355 2243
2244#if EV_MULTIPLICITY
2245 /* mimic free (0) */
2246 if (!EV_A)
2247 return;
2248#endif
2249
2250#if EV_CLEANUP_ENABLE
2251 /* queue cleanup watchers (and execute them) */
2252 if (expect_false (cleanupcnt))
2253 {
2254 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2255 EV_INVOKE_PENDING;
2256 }
2257#endif
2258
2259#if EV_CHILD_ENABLE
2260 if (ev_is_active (&childev))
2261 {
2262 ev_ref (EV_A); /* child watcher */
2263 ev_signal_stop (EV_A_ &childev);
2264 }
2265#endif
2266
1356 if (ev_is_active (&pipeev)) 2267 if (ev_is_active (&pipe_w))
1357 { 2268 {
1358 ev_ref (EV_A); /* signal watcher */ 2269 /*ev_ref (EV_A);*/
1359 ev_io_stop (EV_A_ &pipeev); 2270 /*ev_io_stop (EV_A_ &pipe_w);*/
1360 2271
1361#if EV_USE_EVENTFD 2272#if EV_USE_EVENTFD
1362 if (evfd >= 0) 2273 if (evfd >= 0)
1363 close (evfd); 2274 close (evfd);
1364#endif 2275#endif
1365 2276
1366 if (evpipe [0] >= 0) 2277 if (evpipe [0] >= 0)
1367 { 2278 {
1368 close (evpipe [0]); 2279 EV_WIN32_CLOSE_FD (evpipe [0]);
1369 close (evpipe [1]); 2280 EV_WIN32_CLOSE_FD (evpipe [1]);
1370 } 2281 }
1371 } 2282 }
2283
2284#if EV_USE_SIGNALFD
2285 if (ev_is_active (&sigfd_w))
2286 close (sigfd);
2287#endif
1372 2288
1373#if EV_USE_INOTIFY 2289#if EV_USE_INOTIFY
1374 if (fs_fd >= 0) 2290 if (fs_fd >= 0)
1375 close (fs_fd); 2291 close (fs_fd);
1376#endif 2292#endif
1377 2293
1378 if (backend_fd >= 0) 2294 if (backend_fd >= 0)
1379 close (backend_fd); 2295 close (backend_fd);
1380 2296
2297#if EV_USE_IOCP
2298 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2299#endif
1381#if EV_USE_PORT 2300#if EV_USE_PORT
1382 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2301 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1383#endif 2302#endif
1384#if EV_USE_KQUEUE 2303#if EV_USE_KQUEUE
1385 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2304 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1400#if EV_IDLE_ENABLE 2319#if EV_IDLE_ENABLE
1401 array_free (idle, [i]); 2320 array_free (idle, [i]);
1402#endif 2321#endif
1403 } 2322 }
1404 2323
1405 ev_free (anfds); anfdmax = 0; 2324 ev_free (anfds); anfds = 0; anfdmax = 0;
1406 2325
1407 /* have to use the microsoft-never-gets-it-right macro */ 2326 /* have to use the microsoft-never-gets-it-right macro */
2327 array_free (rfeed, EMPTY);
1408 array_free (fdchange, EMPTY); 2328 array_free (fdchange, EMPTY);
1409 array_free (timer, EMPTY); 2329 array_free (timer, EMPTY);
1410#if EV_PERIODIC_ENABLE 2330#if EV_PERIODIC_ENABLE
1411 array_free (periodic, EMPTY); 2331 array_free (periodic, EMPTY);
1412#endif 2332#endif
1413#if EV_FORK_ENABLE 2333#if EV_FORK_ENABLE
1414 array_free (fork, EMPTY); 2334 array_free (fork, EMPTY);
1415#endif 2335#endif
2336#if EV_CLEANUP_ENABLE
2337 array_free (cleanup, EMPTY);
2338#endif
1416 array_free (prepare, EMPTY); 2339 array_free (prepare, EMPTY);
1417 array_free (check, EMPTY); 2340 array_free (check, EMPTY);
1418#if EV_ASYNC_ENABLE 2341#if EV_ASYNC_ENABLE
1419 array_free (async, EMPTY); 2342 array_free (async, EMPTY);
1420#endif 2343#endif
1421 2344
1422 backend = 0; 2345 backend = 0;
2346
2347#if EV_MULTIPLICITY
2348 if (ev_is_default_loop (EV_A))
2349#endif
2350 ev_default_loop_ptr = 0;
2351#if EV_MULTIPLICITY
2352 else
2353 ev_free (EV_A);
2354#endif
1423} 2355}
1424 2356
1425#if EV_USE_INOTIFY 2357#if EV_USE_INOTIFY
1426void inline_size infy_fork (EV_P); 2358inline_size void infy_fork (EV_P);
1427#endif 2359#endif
1428 2360
1429void inline_size 2361inline_size void
1430loop_fork (EV_P) 2362loop_fork (EV_P)
1431{ 2363{
1432#if EV_USE_PORT 2364#if EV_USE_PORT
1433 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2365 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1434#endif 2366#endif
… …
1440#endif 2372#endif
1441#if EV_USE_INOTIFY 2373#if EV_USE_INOTIFY
1442 infy_fork (EV_A); 2374 infy_fork (EV_A);
1443#endif 2375#endif
1444 2376
1445 if (ev_is_active (&pipeev)) 2377 if (ev_is_active (&pipe_w))
1446 { 2378 {
1447 /* this "locks" the handlers against writing to the pipe */ 2379 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1448 /* while we modify the fd vars */
1449 gotsig = 1;
1450#if EV_ASYNC_ENABLE
1451 gotasync = 1;
1452#endif
1453 2380
1454 ev_ref (EV_A); 2381 ev_ref (EV_A);
1455 ev_io_stop (EV_A_ &pipeev); 2382 ev_io_stop (EV_A_ &pipe_w);
1456 2383
1457#if EV_USE_EVENTFD 2384#if EV_USE_EVENTFD
1458 if (evfd >= 0) 2385 if (evfd >= 0)
1459 close (evfd); 2386 close (evfd);
1460#endif 2387#endif
1461 2388
1462 if (evpipe [0] >= 0) 2389 if (evpipe [0] >= 0)
1463 { 2390 {
1464 close (evpipe [0]); 2391 EV_WIN32_CLOSE_FD (evpipe [0]);
1465 close (evpipe [1]); 2392 EV_WIN32_CLOSE_FD (evpipe [1]);
1466 } 2393 }
1467 2394
2395#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1468 evpipe_init (EV_A); 2396 evpipe_init (EV_A);
1469 /* now iterate over everything, in case we missed something */ 2397 /* now iterate over everything, in case we missed something */
1470 pipecb (EV_A_ &pipeev, EV_READ); 2398 pipecb (EV_A_ &pipe_w, EV_READ);
2399#endif
1471 } 2400 }
1472 2401
1473 postfork = 0; 2402 postfork = 0;
1474} 2403}
1475 2404
1476#if EV_MULTIPLICITY 2405#if EV_MULTIPLICITY
1477 2406
1478struct ev_loop * 2407struct ev_loop * ecb_cold
1479ev_loop_new (unsigned int flags) 2408ev_loop_new (unsigned int flags)
1480{ 2409{
1481 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2410 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1482 2411
1483 memset (loop, 0, sizeof (struct ev_loop)); 2412 memset (EV_A, 0, sizeof (struct ev_loop));
1484
1485 loop_init (EV_A_ flags); 2413 loop_init (EV_A_ flags);
1486 2414
1487 if (ev_backend (EV_A)) 2415 if (ev_backend (EV_A))
1488 return loop; 2416 return EV_A;
1489 2417
2418 ev_free (EV_A);
1490 return 0; 2419 return 0;
1491} 2420}
1492 2421
1493void 2422#endif /* multiplicity */
1494ev_loop_destroy (EV_P)
1495{
1496 loop_destroy (EV_A);
1497 ev_free (loop);
1498}
1499
1500void
1501ev_loop_fork (EV_P)
1502{
1503 postfork = 1; /* must be in line with ev_default_fork */
1504}
1505 2423
1506#if EV_VERIFY 2424#if EV_VERIFY
1507static void noinline 2425static void noinline ecb_cold
1508verify_watcher (EV_P_ W w) 2426verify_watcher (EV_P_ W w)
1509{ 2427{
1510 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2428 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1511 2429
1512 if (w->pending) 2430 if (w->pending)
1513 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2431 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1514} 2432}
1515 2433
1516static void noinline 2434static void noinline ecb_cold
1517verify_heap (EV_P_ ANHE *heap, int N) 2435verify_heap (EV_P_ ANHE *heap, int N)
1518{ 2436{
1519 int i; 2437 int i;
1520 2438
1521 for (i = HEAP0; i < N + HEAP0; ++i) 2439 for (i = HEAP0; i < N + HEAP0; ++i)
1522 { 2440 {
1523 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 2441 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1524 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 2442 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1525 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 2443 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1526 2444
1527 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2445 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1528 } 2446 }
1529} 2447}
1530 2448
1531static void noinline 2449static void noinline ecb_cold
1532array_verify (EV_P_ W *ws, int cnt) 2450array_verify (EV_P_ W *ws, int cnt)
1533{ 2451{
1534 while (cnt--) 2452 while (cnt--)
1535 { 2453 {
1536 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2454 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1537 verify_watcher (EV_A_ ws [cnt]); 2455 verify_watcher (EV_A_ ws [cnt]);
1538 } 2456 }
1539} 2457}
1540#endif 2458#endif
1541 2459
1542void 2460#if EV_FEATURE_API
2461void ecb_cold
1543ev_loop_verify (EV_P) 2462ev_verify (EV_P)
1544{ 2463{
1545#if EV_VERIFY 2464#if EV_VERIFY
1546 int i; 2465 int i;
1547 WL w; 2466 WL w;
1548 2467
1549 assert (activecnt >= -1); 2468 assert (activecnt >= -1);
1550 2469
1551 assert (fdchangemax >= fdchangecnt); 2470 assert (fdchangemax >= fdchangecnt);
1552 for (i = 0; i < fdchangecnt; ++i) 2471 for (i = 0; i < fdchangecnt; ++i)
1553 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 2472 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1554 2473
1555 assert (anfdmax >= 0); 2474 assert (anfdmax >= 0);
1556 for (i = 0; i < anfdmax; ++i) 2475 for (i = 0; i < anfdmax; ++i)
1557 for (w = anfds [i].head; w; w = w->next) 2476 for (w = anfds [i].head; w; w = w->next)
1558 { 2477 {
1559 verify_watcher (EV_A_ (W)w); 2478 verify_watcher (EV_A_ (W)w);
1560 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 2479 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1561 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2480 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1562 } 2481 }
1563 2482
1564 assert (timermax >= timercnt); 2483 assert (timermax >= timercnt);
1565 verify_heap (EV_A_ timers, timercnt); 2484 verify_heap (EV_A_ timers, timercnt);
1566 2485
… …
1582#if EV_FORK_ENABLE 2501#if EV_FORK_ENABLE
1583 assert (forkmax >= forkcnt); 2502 assert (forkmax >= forkcnt);
1584 array_verify (EV_A_ (W *)forks, forkcnt); 2503 array_verify (EV_A_ (W *)forks, forkcnt);
1585#endif 2504#endif
1586 2505
2506#if EV_CLEANUP_ENABLE
2507 assert (cleanupmax >= cleanupcnt);
2508 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2509#endif
2510
1587#if EV_ASYNC_ENABLE 2511#if EV_ASYNC_ENABLE
1588 assert (asyncmax >= asynccnt); 2512 assert (asyncmax >= asynccnt);
1589 array_verify (EV_A_ (W *)asyncs, asynccnt); 2513 array_verify (EV_A_ (W *)asyncs, asynccnt);
1590#endif 2514#endif
1591 2515
2516#if EV_PREPARE_ENABLE
1592 assert (preparemax >= preparecnt); 2517 assert (preparemax >= preparecnt);
1593 array_verify (EV_A_ (W *)prepares, preparecnt); 2518 array_verify (EV_A_ (W *)prepares, preparecnt);
2519#endif
1594 2520
2521#if EV_CHECK_ENABLE
1595 assert (checkmax >= checkcnt); 2522 assert (checkmax >= checkcnt);
1596 array_verify (EV_A_ (W *)checks, checkcnt); 2523 array_verify (EV_A_ (W *)checks, checkcnt);
2524#endif
1597 2525
1598# if 0 2526# if 0
2527#if EV_CHILD_ENABLE
1599 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2528 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1600 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2529 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2530#endif
1601# endif 2531# endif
1602#endif 2532#endif
1603} 2533}
1604 2534#endif
1605#endif /* multiplicity */
1606 2535
1607#if EV_MULTIPLICITY 2536#if EV_MULTIPLICITY
1608struct ev_loop * 2537struct ev_loop * ecb_cold
1609ev_default_loop_init (unsigned int flags)
1610#else 2538#else
1611int 2539int
2540#endif
1612ev_default_loop (unsigned int flags) 2541ev_default_loop (unsigned int flags)
1613#endif
1614{ 2542{
1615 if (!ev_default_loop_ptr) 2543 if (!ev_default_loop_ptr)
1616 { 2544 {
1617#if EV_MULTIPLICITY 2545#if EV_MULTIPLICITY
1618 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2546 EV_P = ev_default_loop_ptr = &default_loop_struct;
1619#else 2547#else
1620 ev_default_loop_ptr = 1; 2548 ev_default_loop_ptr = 1;
1621#endif 2549#endif
1622 2550
1623 loop_init (EV_A_ flags); 2551 loop_init (EV_A_ flags);
1624 2552
1625 if (ev_backend (EV_A)) 2553 if (ev_backend (EV_A))
1626 { 2554 {
1627#ifndef _WIN32 2555#if EV_CHILD_ENABLE
1628 ev_signal_init (&childev, childcb, SIGCHLD); 2556 ev_signal_init (&childev, childcb, SIGCHLD);
1629 ev_set_priority (&childev, EV_MAXPRI); 2557 ev_set_priority (&childev, EV_MAXPRI);
1630 ev_signal_start (EV_A_ &childev); 2558 ev_signal_start (EV_A_ &childev);
1631 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2559 ev_unref (EV_A); /* child watcher should not keep loop alive */
1632#endif 2560#endif
… …
1637 2565
1638 return ev_default_loop_ptr; 2566 return ev_default_loop_ptr;
1639} 2567}
1640 2568
1641void 2569void
1642ev_default_destroy (void) 2570ev_loop_fork (EV_P)
1643{ 2571{
1644#if EV_MULTIPLICITY
1645 struct ev_loop *loop = ev_default_loop_ptr;
1646#endif
1647
1648 ev_default_loop_ptr = 0;
1649
1650#ifndef _WIN32
1651 ev_ref (EV_A); /* child watcher */
1652 ev_signal_stop (EV_A_ &childev);
1653#endif
1654
1655 loop_destroy (EV_A);
1656}
1657
1658void
1659ev_default_fork (void)
1660{
1661#if EV_MULTIPLICITY
1662 struct ev_loop *loop = ev_default_loop_ptr;
1663#endif
1664
1665 postfork = 1; /* must be in line with ev_loop_fork */ 2572 postfork = 1; /* must be in line with ev_default_fork */
1666} 2573}
1667 2574
1668/*****************************************************************************/ 2575/*****************************************************************************/
1669 2576
1670void 2577void
1671ev_invoke (EV_P_ void *w, int revents) 2578ev_invoke (EV_P_ void *w, int revents)
1672{ 2579{
1673 EV_CB_INVOKE ((W)w, revents); 2580 EV_CB_INVOKE ((W)w, revents);
1674} 2581}
1675 2582
1676void inline_speed 2583unsigned int
1677call_pending (EV_P) 2584ev_pending_count (EV_P)
2585{
2586 int pri;
2587 unsigned int count = 0;
2588
2589 for (pri = NUMPRI; pri--; )
2590 count += pendingcnt [pri];
2591
2592 return count;
2593}
2594
2595void noinline
2596ev_invoke_pending (EV_P)
1678{ 2597{
1679 int pri; 2598 int pri;
1680 2599
1681 for (pri = NUMPRI; pri--; ) 2600 for (pri = NUMPRI; pri--; )
1682 while (pendingcnt [pri]) 2601 while (pendingcnt [pri])
1683 { 2602 {
1684 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2603 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1685 2604
1686 if (expect_true (p->w))
1687 {
1688 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1689
1690 p->w->pending = 0; 2605 p->w->pending = 0;
1691 EV_CB_INVOKE (p->w, p->events); 2606 EV_CB_INVOKE (p->w, p->events);
1692 EV_FREQUENT_CHECK; 2607 EV_FREQUENT_CHECK;
1693 }
1694 } 2608 }
1695} 2609}
1696 2610
1697#if EV_IDLE_ENABLE 2611#if EV_IDLE_ENABLE
1698void inline_size 2612/* make idle watchers pending. this handles the "call-idle */
2613/* only when higher priorities are idle" logic */
2614inline_size void
1699idle_reify (EV_P) 2615idle_reify (EV_P)
1700{ 2616{
1701 if (expect_false (idleall)) 2617 if (expect_false (idleall))
1702 { 2618 {
1703 int pri; 2619 int pri;
… …
1715 } 2631 }
1716 } 2632 }
1717} 2633}
1718#endif 2634#endif
1719 2635
1720void inline_size 2636/* make timers pending */
2637inline_size void
1721timers_reify (EV_P) 2638timers_reify (EV_P)
1722{ 2639{
1723 EV_FREQUENT_CHECK; 2640 EV_FREQUENT_CHECK;
1724 2641
1725 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2642 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1726 { 2643 {
1727 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2644 do
1728
1729 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1730
1731 /* first reschedule or stop timer */
1732 if (w->repeat)
1733 { 2645 {
2646 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2647
2648 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2649
2650 /* first reschedule or stop timer */
2651 if (w->repeat)
2652 {
1734 ev_at (w) += w->repeat; 2653 ev_at (w) += w->repeat;
1735 if (ev_at (w) < mn_now) 2654 if (ev_at (w) < mn_now)
1736 ev_at (w) = mn_now; 2655 ev_at (w) = mn_now;
1737 2656
1738 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2657 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1739 2658
1740 ANHE_at_cache (timers [HEAP0]); 2659 ANHE_at_cache (timers [HEAP0]);
1741 downheap (timers, timercnt, HEAP0); 2660 downheap (timers, timercnt, HEAP0);
2661 }
2662 else
2663 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2664
2665 EV_FREQUENT_CHECK;
2666 feed_reverse (EV_A_ (W)w);
1742 } 2667 }
1743 else 2668 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1744 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1745 2669
1746 EV_FREQUENT_CHECK; 2670 feed_reverse_done (EV_A_ EV_TIMER);
1747 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1748 } 2671 }
1749} 2672}
1750 2673
1751#if EV_PERIODIC_ENABLE 2674#if EV_PERIODIC_ENABLE
1752void inline_size 2675
2676static void noinline
2677periodic_recalc (EV_P_ ev_periodic *w)
2678{
2679 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2680 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2681
2682 /* the above almost always errs on the low side */
2683 while (at <= ev_rt_now)
2684 {
2685 ev_tstamp nat = at + w->interval;
2686
2687 /* when resolution fails us, we use ev_rt_now */
2688 if (expect_false (nat == at))
2689 {
2690 at = ev_rt_now;
2691 break;
2692 }
2693
2694 at = nat;
2695 }
2696
2697 ev_at (w) = at;
2698}
2699
2700/* make periodics pending */
2701inline_size void
1753periodics_reify (EV_P) 2702periodics_reify (EV_P)
1754{ 2703{
1755 EV_FREQUENT_CHECK; 2704 EV_FREQUENT_CHECK;
1756 2705
1757 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2706 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1758 { 2707 {
1759 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2708 int feed_count = 0;
1760 2709
1761 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2710 do
1762
1763 /* first reschedule or stop timer */
1764 if (w->reschedule_cb)
1765 { 2711 {
2712 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2713
2714 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2715
2716 /* first reschedule or stop timer */
2717 if (w->reschedule_cb)
2718 {
1766 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2719 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1767 2720
1768 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2721 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1769 2722
1770 ANHE_at_cache (periodics [HEAP0]); 2723 ANHE_at_cache (periodics [HEAP0]);
1771 downheap (periodics, periodiccnt, HEAP0); 2724 downheap (periodics, periodiccnt, HEAP0);
2725 }
2726 else if (w->interval)
2727 {
2728 periodic_recalc (EV_A_ w);
2729 ANHE_at_cache (periodics [HEAP0]);
2730 downheap (periodics, periodiccnt, HEAP0);
2731 }
2732 else
2733 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2734
2735 EV_FREQUENT_CHECK;
2736 feed_reverse (EV_A_ (W)w);
1772 } 2737 }
1773 else if (w->interval) 2738 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1774 {
1775 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1776 /* if next trigger time is not sufficiently in the future, put it there */
1777 /* this might happen because of floating point inexactness */
1778 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1779 {
1780 ev_at (w) += w->interval;
1781 2739
1782 /* if interval is unreasonably low we might still have a time in the past */
1783 /* so correct this. this will make the periodic very inexact, but the user */
1784 /* has effectively asked to get triggered more often than possible */
1785 if (ev_at (w) < ev_rt_now)
1786 ev_at (w) = ev_rt_now;
1787 }
1788
1789 ANHE_at_cache (periodics [HEAP0]);
1790 downheap (periodics, periodiccnt, HEAP0);
1791 }
1792 else
1793 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1794
1795 EV_FREQUENT_CHECK;
1796 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2740 feed_reverse_done (EV_A_ EV_PERIODIC);
1797 } 2741 }
1798} 2742}
1799 2743
2744/* simply recalculate all periodics */
2745/* TODO: maybe ensure that at least one event happens when jumping forward? */
1800static void noinline 2746static void noinline ecb_cold
1801periodics_reschedule (EV_P) 2747periodics_reschedule (EV_P)
1802{ 2748{
1803 int i; 2749 int i;
1804 2750
1805 /* adjust periodics after time jump */ 2751 /* adjust periodics after time jump */
… …
1808 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2754 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1809 2755
1810 if (w->reschedule_cb) 2756 if (w->reschedule_cb)
1811 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2757 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1812 else if (w->interval) 2758 else if (w->interval)
1813 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2759 periodic_recalc (EV_A_ w);
1814 2760
1815 ANHE_at_cache (periodics [i]); 2761 ANHE_at_cache (periodics [i]);
1816 } 2762 }
1817 2763
1818 reheap (periodics, periodiccnt); 2764 reheap (periodics, periodiccnt);
1819} 2765}
1820#endif 2766#endif
1821 2767
1822void inline_speed 2768/* adjust all timers by a given offset */
2769static void noinline ecb_cold
2770timers_reschedule (EV_P_ ev_tstamp adjust)
2771{
2772 int i;
2773
2774 for (i = 0; i < timercnt; ++i)
2775 {
2776 ANHE *he = timers + i + HEAP0;
2777 ANHE_w (*he)->at += adjust;
2778 ANHE_at_cache (*he);
2779 }
2780}
2781
2782/* fetch new monotonic and realtime times from the kernel */
2783/* also detect if there was a timejump, and act accordingly */
2784inline_speed void
1823time_update (EV_P_ ev_tstamp max_block) 2785time_update (EV_P_ ev_tstamp max_block)
1824{ 2786{
1825 int i;
1826
1827#if EV_USE_MONOTONIC 2787#if EV_USE_MONOTONIC
1828 if (expect_true (have_monotonic)) 2788 if (expect_true (have_monotonic))
1829 { 2789 {
2790 int i;
1830 ev_tstamp odiff = rtmn_diff; 2791 ev_tstamp odiff = rtmn_diff;
1831 2792
1832 mn_now = get_clock (); 2793 mn_now = get_clock ();
1833 2794
1834 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2795 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1850 * doesn't hurt either as we only do this on time-jumps or 2811 * doesn't hurt either as we only do this on time-jumps or
1851 * in the unlikely event of having been preempted here. 2812 * in the unlikely event of having been preempted here.
1852 */ 2813 */
1853 for (i = 4; --i; ) 2814 for (i = 4; --i; )
1854 { 2815 {
2816 ev_tstamp diff;
1855 rtmn_diff = ev_rt_now - mn_now; 2817 rtmn_diff = ev_rt_now - mn_now;
1856 2818
2819 diff = odiff - rtmn_diff;
2820
1857 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2821 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1858 return; /* all is well */ 2822 return; /* all is well */
1859 2823
1860 ev_rt_now = ev_time (); 2824 ev_rt_now = ev_time ();
1861 mn_now = get_clock (); 2825 mn_now = get_clock ();
1862 now_floor = mn_now; 2826 now_floor = mn_now;
1863 } 2827 }
1864 2828
2829 /* no timer adjustment, as the monotonic clock doesn't jump */
2830 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1865# if EV_PERIODIC_ENABLE 2831# if EV_PERIODIC_ENABLE
1866 periodics_reschedule (EV_A); 2832 periodics_reschedule (EV_A);
1867# endif 2833# endif
1868 /* no timer adjustment, as the monotonic clock doesn't jump */
1869 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1870 } 2834 }
1871 else 2835 else
1872#endif 2836#endif
1873 { 2837 {
1874 ev_rt_now = ev_time (); 2838 ev_rt_now = ev_time ();
1875 2839
1876 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2840 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1877 { 2841 {
2842 /* adjust timers. this is easy, as the offset is the same for all of them */
2843 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1878#if EV_PERIODIC_ENABLE 2844#if EV_PERIODIC_ENABLE
1879 periodics_reschedule (EV_A); 2845 periodics_reschedule (EV_A);
1880#endif 2846#endif
1881 /* adjust timers. this is easy, as the offset is the same for all of them */
1882 for (i = 0; i < timercnt; ++i)
1883 {
1884 ANHE *he = timers + i + HEAP0;
1885 ANHE_w (*he)->at += ev_rt_now - mn_now;
1886 ANHE_at_cache (*he);
1887 }
1888 } 2847 }
1889 2848
1890 mn_now = ev_rt_now; 2849 mn_now = ev_rt_now;
1891 } 2850 }
1892} 2851}
1893 2852
1894void 2853void
1895ev_ref (EV_P)
1896{
1897 ++activecnt;
1898}
1899
1900void
1901ev_unref (EV_P)
1902{
1903 --activecnt;
1904}
1905
1906void
1907ev_now_update (EV_P)
1908{
1909 time_update (EV_A_ 1e100);
1910}
1911
1912static int loop_done;
1913
1914void
1915ev_loop (EV_P_ int flags) 2854ev_run (EV_P_ int flags)
1916{ 2855{
2856#if EV_FEATURE_API
2857 ++loop_depth;
2858#endif
2859
2860 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2861
1917 loop_done = EVUNLOOP_CANCEL; 2862 loop_done = EVBREAK_CANCEL;
1918 2863
1919 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2864 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1920 2865
1921 do 2866 do
1922 { 2867 {
1923#if EV_VERIFY >= 2 2868#if EV_VERIFY >= 2
1924 ev_loop_verify (EV_A); 2869 ev_verify (EV_A);
1925#endif 2870#endif
1926 2871
1927#ifndef _WIN32 2872#ifndef _WIN32
1928 if (expect_false (curpid)) /* penalise the forking check even more */ 2873 if (expect_false (curpid)) /* penalise the forking check even more */
1929 if (expect_false (getpid () != curpid)) 2874 if (expect_false (getpid () != curpid))
… …
1937 /* we might have forked, so queue fork handlers */ 2882 /* we might have forked, so queue fork handlers */
1938 if (expect_false (postfork)) 2883 if (expect_false (postfork))
1939 if (forkcnt) 2884 if (forkcnt)
1940 { 2885 {
1941 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2886 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1942 call_pending (EV_A); 2887 EV_INVOKE_PENDING;
1943 } 2888 }
1944#endif 2889#endif
1945 2890
2891#if EV_PREPARE_ENABLE
1946 /* queue prepare watchers (and execute them) */ 2892 /* queue prepare watchers (and execute them) */
1947 if (expect_false (preparecnt)) 2893 if (expect_false (preparecnt))
1948 { 2894 {
1949 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2895 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1950 call_pending (EV_A); 2896 EV_INVOKE_PENDING;
1951 } 2897 }
2898#endif
1952 2899
1953 if (expect_false (!activecnt)) 2900 if (expect_false (loop_done))
1954 break; 2901 break;
1955 2902
1956 /* we might have forked, so reify kernel state if necessary */ 2903 /* we might have forked, so reify kernel state if necessary */
1957 if (expect_false (postfork)) 2904 if (expect_false (postfork))
1958 loop_fork (EV_A); 2905 loop_fork (EV_A);
… …
1963 /* calculate blocking time */ 2910 /* calculate blocking time */
1964 { 2911 {
1965 ev_tstamp waittime = 0.; 2912 ev_tstamp waittime = 0.;
1966 ev_tstamp sleeptime = 0.; 2913 ev_tstamp sleeptime = 0.;
1967 2914
2915 /* remember old timestamp for io_blocktime calculation */
2916 ev_tstamp prev_mn_now = mn_now;
2917
2918 /* update time to cancel out callback processing overhead */
2919 time_update (EV_A_ 1e100);
2920
2921 /* from now on, we want a pipe-wake-up */
2922 pipe_write_wanted = 1;
2923
2924 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2925
1968 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2926 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1969 { 2927 {
1970 /* update time to cancel out callback processing overhead */
1971 time_update (EV_A_ 1e100);
1972
1973 waittime = MAX_BLOCKTIME; 2928 waittime = MAX_BLOCKTIME;
1974 2929
1975 if (timercnt) 2930 if (timercnt)
1976 { 2931 {
1977 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2932 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1978 if (waittime > to) waittime = to; 2933 if (waittime > to) waittime = to;
1979 } 2934 }
1980 2935
1981#if EV_PERIODIC_ENABLE 2936#if EV_PERIODIC_ENABLE
1982 if (periodiccnt) 2937 if (periodiccnt)
1983 { 2938 {
1984 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2939 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1985 if (waittime > to) waittime = to; 2940 if (waittime > to) waittime = to;
1986 } 2941 }
1987#endif 2942#endif
1988 2943
2944 /* don't let timeouts decrease the waittime below timeout_blocktime */
1989 if (expect_false (waittime < timeout_blocktime)) 2945 if (expect_false (waittime < timeout_blocktime))
1990 waittime = timeout_blocktime; 2946 waittime = timeout_blocktime;
1991 2947
1992 sleeptime = waittime - backend_fudge; 2948 /* at this point, we NEED to wait, so we have to ensure */
2949 /* to pass a minimum nonzero value to the backend */
2950 if (expect_false (waittime < backend_mintime))
2951 waittime = backend_mintime;
1993 2952
2953 /* extra check because io_blocktime is commonly 0 */
1994 if (expect_true (sleeptime > io_blocktime)) 2954 if (expect_false (io_blocktime))
1995 sleeptime = io_blocktime;
1996
1997 if (sleeptime)
1998 { 2955 {
2956 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2957
2958 if (sleeptime > waittime - backend_mintime)
2959 sleeptime = waittime - backend_mintime;
2960
2961 if (expect_true (sleeptime > 0.))
2962 {
1999 ev_sleep (sleeptime); 2963 ev_sleep (sleeptime);
2000 waittime -= sleeptime; 2964 waittime -= sleeptime;
2965 }
2001 } 2966 }
2002 } 2967 }
2003 2968
2969#if EV_FEATURE_API
2004 ++loop_count; 2970 ++loop_count;
2971#endif
2972 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2005 backend_poll (EV_A_ waittime); 2973 backend_poll (EV_A_ waittime);
2974 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2975
2976 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2977
2978 if (pipe_write_skipped)
2979 {
2980 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2981 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2982 }
2983
2006 2984
2007 /* update ev_rt_now, do magic */ 2985 /* update ev_rt_now, do magic */
2008 time_update (EV_A_ waittime + sleeptime); 2986 time_update (EV_A_ waittime + sleeptime);
2009 } 2987 }
2010 2988
… …
2017#if EV_IDLE_ENABLE 2995#if EV_IDLE_ENABLE
2018 /* queue idle watchers unless other events are pending */ 2996 /* queue idle watchers unless other events are pending */
2019 idle_reify (EV_A); 2997 idle_reify (EV_A);
2020#endif 2998#endif
2021 2999
3000#if EV_CHECK_ENABLE
2022 /* queue check watchers, to be executed first */ 3001 /* queue check watchers, to be executed first */
2023 if (expect_false (checkcnt)) 3002 if (expect_false (checkcnt))
2024 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3003 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3004#endif
2025 3005
2026 call_pending (EV_A); 3006 EV_INVOKE_PENDING;
2027 } 3007 }
2028 while (expect_true ( 3008 while (expect_true (
2029 activecnt 3009 activecnt
2030 && !loop_done 3010 && !loop_done
2031 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3011 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2032 )); 3012 ));
2033 3013
2034 if (loop_done == EVUNLOOP_ONE) 3014 if (loop_done == EVBREAK_ONE)
2035 loop_done = EVUNLOOP_CANCEL; 3015 loop_done = EVBREAK_CANCEL;
3016
3017#if EV_FEATURE_API
3018 --loop_depth;
3019#endif
2036} 3020}
2037 3021
2038void 3022void
2039ev_unloop (EV_P_ int how) 3023ev_break (EV_P_ int how)
2040{ 3024{
2041 loop_done = how; 3025 loop_done = how;
2042} 3026}
2043 3027
3028void
3029ev_ref (EV_P)
3030{
3031 ++activecnt;
3032}
3033
3034void
3035ev_unref (EV_P)
3036{
3037 --activecnt;
3038}
3039
3040void
3041ev_now_update (EV_P)
3042{
3043 time_update (EV_A_ 1e100);
3044}
3045
3046void
3047ev_suspend (EV_P)
3048{
3049 ev_now_update (EV_A);
3050}
3051
3052void
3053ev_resume (EV_P)
3054{
3055 ev_tstamp mn_prev = mn_now;
3056
3057 ev_now_update (EV_A);
3058 timers_reschedule (EV_A_ mn_now - mn_prev);
3059#if EV_PERIODIC_ENABLE
3060 /* TODO: really do this? */
3061 periodics_reschedule (EV_A);
3062#endif
3063}
3064
2044/*****************************************************************************/ 3065/*****************************************************************************/
3066/* singly-linked list management, used when the expected list length is short */
2045 3067
2046void inline_size 3068inline_size void
2047wlist_add (WL *head, WL elem) 3069wlist_add (WL *head, WL elem)
2048{ 3070{
2049 elem->next = *head; 3071 elem->next = *head;
2050 *head = elem; 3072 *head = elem;
2051} 3073}
2052 3074
2053void inline_size 3075inline_size void
2054wlist_del (WL *head, WL elem) 3076wlist_del (WL *head, WL elem)
2055{ 3077{
2056 while (*head) 3078 while (*head)
2057 { 3079 {
2058 if (*head == elem) 3080 if (expect_true (*head == elem))
2059 { 3081 {
2060 *head = elem->next; 3082 *head = elem->next;
2061 return; 3083 break;
2062 } 3084 }
2063 3085
2064 head = &(*head)->next; 3086 head = &(*head)->next;
2065 } 3087 }
2066} 3088}
2067 3089
2068void inline_speed 3090/* internal, faster, version of ev_clear_pending */
3091inline_speed void
2069clear_pending (EV_P_ W w) 3092clear_pending (EV_P_ W w)
2070{ 3093{
2071 if (w->pending) 3094 if (w->pending)
2072 { 3095 {
2073 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3096 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2074 w->pending = 0; 3097 w->pending = 0;
2075 } 3098 }
2076} 3099}
2077 3100
2078int 3101int
… …
2082 int pending = w_->pending; 3105 int pending = w_->pending;
2083 3106
2084 if (expect_true (pending)) 3107 if (expect_true (pending))
2085 { 3108 {
2086 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3109 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3110 p->w = (W)&pending_w;
2087 w_->pending = 0; 3111 w_->pending = 0;
2088 p->w = 0;
2089 return p->events; 3112 return p->events;
2090 } 3113 }
2091 else 3114 else
2092 return 0; 3115 return 0;
2093} 3116}
2094 3117
2095void inline_size 3118inline_size void
2096pri_adjust (EV_P_ W w) 3119pri_adjust (EV_P_ W w)
2097{ 3120{
2098 int pri = w->priority; 3121 int pri = ev_priority (w);
2099 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3122 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2100 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3123 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2101 w->priority = pri; 3124 ev_set_priority (w, pri);
2102} 3125}
2103 3126
2104void inline_speed 3127inline_speed void
2105ev_start (EV_P_ W w, int active) 3128ev_start (EV_P_ W w, int active)
2106{ 3129{
2107 pri_adjust (EV_A_ w); 3130 pri_adjust (EV_A_ w);
2108 w->active = active; 3131 w->active = active;
2109 ev_ref (EV_A); 3132 ev_ref (EV_A);
2110} 3133}
2111 3134
2112void inline_size 3135inline_size void
2113ev_stop (EV_P_ W w) 3136ev_stop (EV_P_ W w)
2114{ 3137{
2115 ev_unref (EV_A); 3138 ev_unref (EV_A);
2116 w->active = 0; 3139 w->active = 0;
2117} 3140}
… …
2124 int fd = w->fd; 3147 int fd = w->fd;
2125 3148
2126 if (expect_false (ev_is_active (w))) 3149 if (expect_false (ev_is_active (w)))
2127 return; 3150 return;
2128 3151
2129 assert (("ev_io_start called with negative fd", fd >= 0)); 3152 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2130 assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); 3153 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2131 3154
2132 EV_FREQUENT_CHECK; 3155 EV_FREQUENT_CHECK;
2133 3156
2134 ev_start (EV_A_ (W)w, 1); 3157 ev_start (EV_A_ (W)w, 1);
2135 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3158 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2136 wlist_add (&anfds[fd].head, (WL)w); 3159 wlist_add (&anfds[fd].head, (WL)w);
2137 3160
2138 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 3161 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2139 w->events &= ~EV_IOFDSET; 3162 w->events &= ~EV__IOFDSET;
2140 3163
2141 EV_FREQUENT_CHECK; 3164 EV_FREQUENT_CHECK;
2142} 3165}
2143 3166
2144void noinline 3167void noinline
… …
2146{ 3169{
2147 clear_pending (EV_A_ (W)w); 3170 clear_pending (EV_A_ (W)w);
2148 if (expect_false (!ev_is_active (w))) 3171 if (expect_false (!ev_is_active (w)))
2149 return; 3172 return;
2150 3173
2151 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3174 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2152 3175
2153 EV_FREQUENT_CHECK; 3176 EV_FREQUENT_CHECK;
2154 3177
2155 wlist_del (&anfds[w->fd].head, (WL)w); 3178 wlist_del (&anfds[w->fd].head, (WL)w);
2156 ev_stop (EV_A_ (W)w); 3179 ev_stop (EV_A_ (W)w);
2157 3180
2158 fd_change (EV_A_ w->fd, 1); 3181 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2159 3182
2160 EV_FREQUENT_CHECK; 3183 EV_FREQUENT_CHECK;
2161} 3184}
2162 3185
2163void noinline 3186void noinline
… …
2166 if (expect_false (ev_is_active (w))) 3189 if (expect_false (ev_is_active (w)))
2167 return; 3190 return;
2168 3191
2169 ev_at (w) += mn_now; 3192 ev_at (w) += mn_now;
2170 3193
2171 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 3194 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2172 3195
2173 EV_FREQUENT_CHECK; 3196 EV_FREQUENT_CHECK;
2174 3197
2175 ++timercnt; 3198 ++timercnt;
2176 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3199 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2179 ANHE_at_cache (timers [ev_active (w)]); 3202 ANHE_at_cache (timers [ev_active (w)]);
2180 upheap (timers, ev_active (w)); 3203 upheap (timers, ev_active (w));
2181 3204
2182 EV_FREQUENT_CHECK; 3205 EV_FREQUENT_CHECK;
2183 3206
2184 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3207 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2185} 3208}
2186 3209
2187void noinline 3210void noinline
2188ev_timer_stop (EV_P_ ev_timer *w) 3211ev_timer_stop (EV_P_ ev_timer *w)
2189{ 3212{
… …
2194 EV_FREQUENT_CHECK; 3217 EV_FREQUENT_CHECK;
2195 3218
2196 { 3219 {
2197 int active = ev_active (w); 3220 int active = ev_active (w);
2198 3221
2199 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 3222 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2200 3223
2201 --timercnt; 3224 --timercnt;
2202 3225
2203 if (expect_true (active < timercnt + HEAP0)) 3226 if (expect_true (active < timercnt + HEAP0))
2204 { 3227 {
2205 timers [active] = timers [timercnt + HEAP0]; 3228 timers [active] = timers [timercnt + HEAP0];
2206 adjustheap (timers, timercnt, active); 3229 adjustheap (timers, timercnt, active);
2207 } 3230 }
2208 } 3231 }
2209 3232
2210 EV_FREQUENT_CHECK;
2211
2212 ev_at (w) -= mn_now; 3233 ev_at (w) -= mn_now;
2213 3234
2214 ev_stop (EV_A_ (W)w); 3235 ev_stop (EV_A_ (W)w);
3236
3237 EV_FREQUENT_CHECK;
2215} 3238}
2216 3239
2217void noinline 3240void noinline
2218ev_timer_again (EV_P_ ev_timer *w) 3241ev_timer_again (EV_P_ ev_timer *w)
2219{ 3242{
… …
2237 } 3260 }
2238 3261
2239 EV_FREQUENT_CHECK; 3262 EV_FREQUENT_CHECK;
2240} 3263}
2241 3264
3265ev_tstamp
3266ev_timer_remaining (EV_P_ ev_timer *w)
3267{
3268 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3269}
3270
2242#if EV_PERIODIC_ENABLE 3271#if EV_PERIODIC_ENABLE
2243void noinline 3272void noinline
2244ev_periodic_start (EV_P_ ev_periodic *w) 3273ev_periodic_start (EV_P_ ev_periodic *w)
2245{ 3274{
2246 if (expect_false (ev_is_active (w))) 3275 if (expect_false (ev_is_active (w)))
… …
2248 3277
2249 if (w->reschedule_cb) 3278 if (w->reschedule_cb)
2250 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3279 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2251 else if (w->interval) 3280 else if (w->interval)
2252 { 3281 {
2253 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 3282 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2254 /* this formula differs from the one in periodic_reify because we do not always round up */ 3283 periodic_recalc (EV_A_ w);
2255 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2256 } 3284 }
2257 else 3285 else
2258 ev_at (w) = w->offset; 3286 ev_at (w) = w->offset;
2259 3287
2260 EV_FREQUENT_CHECK; 3288 EV_FREQUENT_CHECK;
… …
2266 ANHE_at_cache (periodics [ev_active (w)]); 3294 ANHE_at_cache (periodics [ev_active (w)]);
2267 upheap (periodics, ev_active (w)); 3295 upheap (periodics, ev_active (w));
2268 3296
2269 EV_FREQUENT_CHECK; 3297 EV_FREQUENT_CHECK;
2270 3298
2271 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3299 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2272} 3300}
2273 3301
2274void noinline 3302void noinline
2275ev_periodic_stop (EV_P_ ev_periodic *w) 3303ev_periodic_stop (EV_P_ ev_periodic *w)
2276{ 3304{
… …
2281 EV_FREQUENT_CHECK; 3309 EV_FREQUENT_CHECK;
2282 3310
2283 { 3311 {
2284 int active = ev_active (w); 3312 int active = ev_active (w);
2285 3313
2286 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 3314 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2287 3315
2288 --periodiccnt; 3316 --periodiccnt;
2289 3317
2290 if (expect_true (active < periodiccnt + HEAP0)) 3318 if (expect_true (active < periodiccnt + HEAP0))
2291 { 3319 {
2292 periodics [active] = periodics [periodiccnt + HEAP0]; 3320 periodics [active] = periodics [periodiccnt + HEAP0];
2293 adjustheap (periodics, periodiccnt, active); 3321 adjustheap (periodics, periodiccnt, active);
2294 } 3322 }
2295 } 3323 }
2296 3324
2297 EV_FREQUENT_CHECK;
2298
2299 ev_stop (EV_A_ (W)w); 3325 ev_stop (EV_A_ (W)w);
3326
3327 EV_FREQUENT_CHECK;
2300} 3328}
2301 3329
2302void noinline 3330void noinline
2303ev_periodic_again (EV_P_ ev_periodic *w) 3331ev_periodic_again (EV_P_ ev_periodic *w)
2304{ 3332{
… …
2310 3338
2311#ifndef SA_RESTART 3339#ifndef SA_RESTART
2312# define SA_RESTART 0 3340# define SA_RESTART 0
2313#endif 3341#endif
2314 3342
3343#if EV_SIGNAL_ENABLE
3344
2315void noinline 3345void noinline
2316ev_signal_start (EV_P_ ev_signal *w) 3346ev_signal_start (EV_P_ ev_signal *w)
2317{ 3347{
2318#if EV_MULTIPLICITY
2319 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2320#endif
2321 if (expect_false (ev_is_active (w))) 3348 if (expect_false (ev_is_active (w)))
2322 return; 3349 return;
2323 3350
2324 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3351 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2325 3352
2326 evpipe_init (EV_A); 3353#if EV_MULTIPLICITY
3354 assert (("libev: a signal must not be attached to two different loops",
3355 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2327 3356
2328 EV_FREQUENT_CHECK; 3357 signals [w->signum - 1].loop = EV_A;
3358#endif
2329 3359
3360 EV_FREQUENT_CHECK;
3361
3362#if EV_USE_SIGNALFD
3363 if (sigfd == -2)
2330 { 3364 {
2331#ifndef _WIN32 3365 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2332 sigset_t full, prev; 3366 if (sigfd < 0 && errno == EINVAL)
2333 sigfillset (&full); 3367 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2334 sigprocmask (SIG_SETMASK, &full, &prev);
2335#endif
2336 3368
2337 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3369 if (sigfd >= 0)
3370 {
3371 fd_intern (sigfd); /* doing it twice will not hurt */
2338 3372
2339#ifndef _WIN32 3373 sigemptyset (&sigfd_set);
2340 sigprocmask (SIG_SETMASK, &prev, 0); 3374
2341#endif 3375 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3376 ev_set_priority (&sigfd_w, EV_MAXPRI);
3377 ev_io_start (EV_A_ &sigfd_w);
3378 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3379 }
2342 } 3380 }
3381
3382 if (sigfd >= 0)
3383 {
3384 /* TODO: check .head */
3385 sigaddset (&sigfd_set, w->signum);
3386 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3387
3388 signalfd (sigfd, &sigfd_set, 0);
3389 }
3390#endif
2343 3391
2344 ev_start (EV_A_ (W)w, 1); 3392 ev_start (EV_A_ (W)w, 1);
2345 wlist_add (&signals [w->signum - 1].head, (WL)w); 3393 wlist_add (&signals [w->signum - 1].head, (WL)w);
2346 3394
2347 if (!((WL)w)->next) 3395 if (!((WL)w)->next)
3396# if EV_USE_SIGNALFD
3397 if (sigfd < 0) /*TODO*/
3398# endif
2348 { 3399 {
2349#if _WIN32 3400# ifdef _WIN32
3401 evpipe_init (EV_A);
3402
2350 signal (w->signum, ev_sighandler); 3403 signal (w->signum, ev_sighandler);
2351#else 3404# else
2352 struct sigaction sa; 3405 struct sigaction sa;
3406
3407 evpipe_init (EV_A);
3408
2353 sa.sa_handler = ev_sighandler; 3409 sa.sa_handler = ev_sighandler;
2354 sigfillset (&sa.sa_mask); 3410 sigfillset (&sa.sa_mask);
2355 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3411 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2356 sigaction (w->signum, &sa, 0); 3412 sigaction (w->signum, &sa, 0);
3413
3414 if (origflags & EVFLAG_NOSIGMASK)
3415 {
3416 sigemptyset (&sa.sa_mask);
3417 sigaddset (&sa.sa_mask, w->signum);
3418 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3419 }
2357#endif 3420#endif
2358 } 3421 }
2359 3422
2360 EV_FREQUENT_CHECK; 3423 EV_FREQUENT_CHECK;
2361} 3424}
2362 3425
2363void noinline 3426void noinline
… …
2371 3434
2372 wlist_del (&signals [w->signum - 1].head, (WL)w); 3435 wlist_del (&signals [w->signum - 1].head, (WL)w);
2373 ev_stop (EV_A_ (W)w); 3436 ev_stop (EV_A_ (W)w);
2374 3437
2375 if (!signals [w->signum - 1].head) 3438 if (!signals [w->signum - 1].head)
3439 {
3440#if EV_MULTIPLICITY
3441 signals [w->signum - 1].loop = 0; /* unattach from signal */
3442#endif
3443#if EV_USE_SIGNALFD
3444 if (sigfd >= 0)
3445 {
3446 sigset_t ss;
3447
3448 sigemptyset (&ss);
3449 sigaddset (&ss, w->signum);
3450 sigdelset (&sigfd_set, w->signum);
3451
3452 signalfd (sigfd, &sigfd_set, 0);
3453 sigprocmask (SIG_UNBLOCK, &ss, 0);
3454 }
3455 else
3456#endif
2376 signal (w->signum, SIG_DFL); 3457 signal (w->signum, SIG_DFL);
3458 }
2377 3459
2378 EV_FREQUENT_CHECK; 3460 EV_FREQUENT_CHECK;
2379} 3461}
3462
3463#endif
3464
3465#if EV_CHILD_ENABLE
2380 3466
2381void 3467void
2382ev_child_start (EV_P_ ev_child *w) 3468ev_child_start (EV_P_ ev_child *w)
2383{ 3469{
2384#if EV_MULTIPLICITY 3470#if EV_MULTIPLICITY
2385 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3471 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2386#endif 3472#endif
2387 if (expect_false (ev_is_active (w))) 3473 if (expect_false (ev_is_active (w)))
2388 return; 3474 return;
2389 3475
2390 EV_FREQUENT_CHECK; 3476 EV_FREQUENT_CHECK;
2391 3477
2392 ev_start (EV_A_ (W)w, 1); 3478 ev_start (EV_A_ (W)w, 1);
2393 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3479 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2394 3480
2395 EV_FREQUENT_CHECK; 3481 EV_FREQUENT_CHECK;
2396} 3482}
2397 3483
2398void 3484void
… …
2402 if (expect_false (!ev_is_active (w))) 3488 if (expect_false (!ev_is_active (w)))
2403 return; 3489 return;
2404 3490
2405 EV_FREQUENT_CHECK; 3491 EV_FREQUENT_CHECK;
2406 3492
2407 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3493 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2408 ev_stop (EV_A_ (W)w); 3494 ev_stop (EV_A_ (W)w);
2409 3495
2410 EV_FREQUENT_CHECK; 3496 EV_FREQUENT_CHECK;
2411} 3497}
3498
3499#endif
2412 3500
2413#if EV_STAT_ENABLE 3501#if EV_STAT_ENABLE
2414 3502
2415# ifdef _WIN32 3503# ifdef _WIN32
2416# undef lstat 3504# undef lstat
2417# define lstat(a,b) _stati64 (a,b) 3505# define lstat(a,b) _stati64 (a,b)
2418# endif 3506# endif
2419 3507
2420#define DEF_STAT_INTERVAL 5.0074891 3508#define DEF_STAT_INTERVAL 5.0074891
3509#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2421#define MIN_STAT_INTERVAL 0.1074891 3510#define MIN_STAT_INTERVAL 0.1074891
2422 3511
2423static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3512static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2424 3513
2425#if EV_USE_INOTIFY 3514#if EV_USE_INOTIFY
2426# define EV_INOTIFY_BUFSIZE 8192 3515
3516/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3517# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2427 3518
2428static void noinline 3519static void noinline
2429infy_add (EV_P_ ev_stat *w) 3520infy_add (EV_P_ ev_stat *w)
2430{ 3521{
2431 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3522 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2432 3523
2433 if (w->wd < 0) 3524 if (w->wd >= 0)
3525 {
3526 struct statfs sfs;
3527
3528 /* now local changes will be tracked by inotify, but remote changes won't */
3529 /* unless the filesystem is known to be local, we therefore still poll */
3530 /* also do poll on <2.6.25, but with normal frequency */
3531
3532 if (!fs_2625)
3533 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3534 else if (!statfs (w->path, &sfs)
3535 && (sfs.f_type == 0x1373 /* devfs */
3536 || sfs.f_type == 0xEF53 /* ext2/3 */
3537 || sfs.f_type == 0x3153464a /* jfs */
3538 || sfs.f_type == 0x52654973 /* reiser3 */
3539 || sfs.f_type == 0x01021994 /* tempfs */
3540 || sfs.f_type == 0x58465342 /* xfs */))
3541 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3542 else
3543 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2434 { 3544 }
2435 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3545 else
3546 {
3547 /* can't use inotify, continue to stat */
3548 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2436 3549
2437 /* monitor some parent directory for speedup hints */ 3550 /* if path is not there, monitor some parent directory for speedup hints */
2438 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3551 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2439 /* but an efficiency issue only */ 3552 /* but an efficiency issue only */
2440 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3553 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2441 { 3554 {
2442 char path [4096]; 3555 char path [4096];
… …
2447 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3560 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2448 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3561 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2449 3562
2450 char *pend = strrchr (path, '/'); 3563 char *pend = strrchr (path, '/');
2451 3564
2452 if (!pend) 3565 if (!pend || pend == path)
2453 break; /* whoops, no '/', complain to your admin */ 3566 break;
2454 3567
2455 *pend = 0; 3568 *pend = 0;
2456 w->wd = inotify_add_watch (fs_fd, path, mask); 3569 w->wd = inotify_add_watch (fs_fd, path, mask);
2457 } 3570 }
2458 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3571 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2459 } 3572 }
2460 } 3573 }
2461 else
2462 todo, on nfs etc., we need to poll every 60s or so
2463 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2464 3574
2465 if (w->wd >= 0) 3575 if (w->wd >= 0)
2466 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3576 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3577
3578 /* now re-arm timer, if required */
3579 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3580 ev_timer_again (EV_A_ &w->timer);
3581 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2467} 3582}
2468 3583
2469static void noinline 3584static void noinline
2470infy_del (EV_P_ ev_stat *w) 3585infy_del (EV_P_ ev_stat *w)
2471{ 3586{
… …
2474 3589
2475 if (wd < 0) 3590 if (wd < 0)
2476 return; 3591 return;
2477 3592
2478 w->wd = -2; 3593 w->wd = -2;
2479 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3594 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2480 wlist_del (&fs_hash [slot].head, (WL)w); 3595 wlist_del (&fs_hash [slot].head, (WL)w);
2481 3596
2482 /* remove this watcher, if others are watching it, they will rearm */ 3597 /* remove this watcher, if others are watching it, they will rearm */
2483 inotify_rm_watch (fs_fd, wd); 3598 inotify_rm_watch (fs_fd, wd);
2484} 3599}
… …
2486static void noinline 3601static void noinline
2487infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3602infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2488{ 3603{
2489 if (slot < 0) 3604 if (slot < 0)
2490 /* overflow, need to check for all hash slots */ 3605 /* overflow, need to check for all hash slots */
2491 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3606 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2492 infy_wd (EV_A_ slot, wd, ev); 3607 infy_wd (EV_A_ slot, wd, ev);
2493 else 3608 else
2494 { 3609 {
2495 WL w_; 3610 WL w_;
2496 3611
2497 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3612 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2498 { 3613 {
2499 ev_stat *w = (ev_stat *)w_; 3614 ev_stat *w = (ev_stat *)w_;
2500 w_ = w_->next; /* lets us remove this watcher and all before it */ 3615 w_ = w_->next; /* lets us remove this watcher and all before it */
2501 3616
2502 if (w->wd == wd || wd == -1) 3617 if (w->wd == wd || wd == -1)
2503 { 3618 {
2504 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3619 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2505 { 3620 {
3621 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2506 w->wd = -1; 3622 w->wd = -1;
2507 infy_add (EV_A_ w); /* re-add, no matter what */ 3623 infy_add (EV_A_ w); /* re-add, no matter what */
2508 } 3624 }
2509 3625
2510 stat_timer_cb (EV_A_ &w->timer, 0); 3626 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2515 3631
2516static void 3632static void
2517infy_cb (EV_P_ ev_io *w, int revents) 3633infy_cb (EV_P_ ev_io *w, int revents)
2518{ 3634{
2519 char buf [EV_INOTIFY_BUFSIZE]; 3635 char buf [EV_INOTIFY_BUFSIZE];
2520 struct inotify_event *ev = (struct inotify_event *)buf;
2521 int ofs; 3636 int ofs;
2522 int len = read (fs_fd, buf, sizeof (buf)); 3637 int len = read (fs_fd, buf, sizeof (buf));
2523 3638
2524 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3639 for (ofs = 0; ofs < len; )
3640 {
3641 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2525 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3642 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3643 ofs += sizeof (struct inotify_event) + ev->len;
3644 }
2526} 3645}
2527 3646
2528void inline_size 3647inline_size void ecb_cold
2529infy_init (EV_P) 3648ev_check_2625 (EV_P)
2530{ 3649{
2531 if (fs_fd != -2)
2532 return;
2533
2534 /* kernels < 2.6.25 are borked 3650 /* kernels < 2.6.25 are borked
2535 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3651 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2536 */ 3652 */
2537 { 3653 if (ev_linux_version () < 0x020619)
2538 struct utsname buf; 3654 return;
2539 int major, minor, micro;
2540 3655
3656 fs_2625 = 1;
3657}
3658
3659inline_size int
3660infy_newfd (void)
3661{
3662#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3663 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3664 if (fd >= 0)
3665 return fd;
3666#endif
3667 return inotify_init ();
3668}
3669
3670inline_size void
3671infy_init (EV_P)
3672{
3673 if (fs_fd != -2)
3674 return;
3675
2541 fs_fd = -1; 3676 fs_fd = -1;
2542 3677
2543 if (uname (&buf)) 3678 ev_check_2625 (EV_A);
2544 return;
2545 3679
2546 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2547 return;
2548
2549 if (major < 2
2550 || (major == 2 && minor < 6)
2551 || (major == 2 && minor == 6 && micro < 25))
2552 return;
2553 }
2554
2555 fs_fd = inotify_init (); 3680 fs_fd = infy_newfd ();
2556 3681
2557 if (fs_fd >= 0) 3682 if (fs_fd >= 0)
2558 { 3683 {
3684 fd_intern (fs_fd);
2559 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3685 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2560 ev_set_priority (&fs_w, EV_MAXPRI); 3686 ev_set_priority (&fs_w, EV_MAXPRI);
2561 ev_io_start (EV_A_ &fs_w); 3687 ev_io_start (EV_A_ &fs_w);
3688 ev_unref (EV_A);
2562 } 3689 }
2563} 3690}
2564 3691
2565void inline_size 3692inline_size void
2566infy_fork (EV_P) 3693infy_fork (EV_P)
2567{ 3694{
2568 int slot; 3695 int slot;
2569 3696
2570 if (fs_fd < 0) 3697 if (fs_fd < 0)
2571 return; 3698 return;
2572 3699
3700 ev_ref (EV_A);
3701 ev_io_stop (EV_A_ &fs_w);
2573 close (fs_fd); 3702 close (fs_fd);
2574 fs_fd = inotify_init (); 3703 fs_fd = infy_newfd ();
2575 3704
3705 if (fs_fd >= 0)
3706 {
3707 fd_intern (fs_fd);
3708 ev_io_set (&fs_w, fs_fd, EV_READ);
3709 ev_io_start (EV_A_ &fs_w);
3710 ev_unref (EV_A);
3711 }
3712
2576 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3713 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2577 { 3714 {
2578 WL w_ = fs_hash [slot].head; 3715 WL w_ = fs_hash [slot].head;
2579 fs_hash [slot].head = 0; 3716 fs_hash [slot].head = 0;
2580 3717
2581 while (w_) 3718 while (w_)
… …
2586 w->wd = -1; 3723 w->wd = -1;
2587 3724
2588 if (fs_fd >= 0) 3725 if (fs_fd >= 0)
2589 infy_add (EV_A_ w); /* re-add, no matter what */ 3726 infy_add (EV_A_ w); /* re-add, no matter what */
2590 else 3727 else
3728 {
3729 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3730 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2591 ev_timer_start (EV_A_ &w->timer); 3731 ev_timer_again (EV_A_ &w->timer);
3732 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3733 }
2592 } 3734 }
2593 } 3735 }
2594} 3736}
2595 3737
2596#endif 3738#endif
… …
2613static void noinline 3755static void noinline
2614stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3756stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2615{ 3757{
2616 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3758 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2617 3759
2618 /* we copy this here each the time so that */ 3760 ev_statdata prev = w->attr;
2619 /* prev has the old value when the callback gets invoked */
2620 w->prev = w->attr;
2621 ev_stat_stat (EV_A_ w); 3761 ev_stat_stat (EV_A_ w);
2622 3762
2623 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3763 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2624 if ( 3764 if (
2625 w->prev.st_dev != w->attr.st_dev 3765 prev.st_dev != w->attr.st_dev
2626 || w->prev.st_ino != w->attr.st_ino 3766 || prev.st_ino != w->attr.st_ino
2627 || w->prev.st_mode != w->attr.st_mode 3767 || prev.st_mode != w->attr.st_mode
2628 || w->prev.st_nlink != w->attr.st_nlink 3768 || prev.st_nlink != w->attr.st_nlink
2629 || w->prev.st_uid != w->attr.st_uid 3769 || prev.st_uid != w->attr.st_uid
2630 || w->prev.st_gid != w->attr.st_gid 3770 || prev.st_gid != w->attr.st_gid
2631 || w->prev.st_rdev != w->attr.st_rdev 3771 || prev.st_rdev != w->attr.st_rdev
2632 || w->prev.st_size != w->attr.st_size 3772 || prev.st_size != w->attr.st_size
2633 || w->prev.st_atime != w->attr.st_atime 3773 || prev.st_atime != w->attr.st_atime
2634 || w->prev.st_mtime != w->attr.st_mtime 3774 || prev.st_mtime != w->attr.st_mtime
2635 || w->prev.st_ctime != w->attr.st_ctime 3775 || prev.st_ctime != w->attr.st_ctime
2636 ) { 3776 ) {
3777 /* we only update w->prev on actual differences */
3778 /* in case we test more often than invoke the callback, */
3779 /* to ensure that prev is always different to attr */
3780 w->prev = prev;
3781
2637 #if EV_USE_INOTIFY 3782 #if EV_USE_INOTIFY
2638 if (fs_fd >= 0) 3783 if (fs_fd >= 0)
2639 { 3784 {
2640 infy_del (EV_A_ w); 3785 infy_del (EV_A_ w);
2641 infy_add (EV_A_ w); 3786 infy_add (EV_A_ w);
… …
2651ev_stat_start (EV_P_ ev_stat *w) 3796ev_stat_start (EV_P_ ev_stat *w)
2652{ 3797{
2653 if (expect_false (ev_is_active (w))) 3798 if (expect_false (ev_is_active (w)))
2654 return; 3799 return;
2655 3800
2656 /* since we use memcmp, we need to clear any padding data etc. */
2657 memset (&w->prev, 0, sizeof (ev_statdata));
2658 memset (&w->attr, 0, sizeof (ev_statdata));
2659
2660 ev_stat_stat (EV_A_ w); 3801 ev_stat_stat (EV_A_ w);
2661 3802
3803 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2662 if (w->interval < MIN_STAT_INTERVAL) 3804 w->interval = MIN_STAT_INTERVAL;
2663 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2664 3805
2665 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3806 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2666 ev_set_priority (&w->timer, ev_priority (w)); 3807 ev_set_priority (&w->timer, ev_priority (w));
2667 3808
2668#if EV_USE_INOTIFY 3809#if EV_USE_INOTIFY
2669 infy_init (EV_A); 3810 infy_init (EV_A);
2670 3811
2671 if (fs_fd >= 0) 3812 if (fs_fd >= 0)
2672 infy_add (EV_A_ w); 3813 infy_add (EV_A_ w);
2673 else 3814 else
2674#endif 3815#endif
3816 {
2675 ev_timer_start (EV_A_ &w->timer); 3817 ev_timer_again (EV_A_ &w->timer);
3818 ev_unref (EV_A);
3819 }
2676 3820
2677 ev_start (EV_A_ (W)w, 1); 3821 ev_start (EV_A_ (W)w, 1);
2678 3822
2679 EV_FREQUENT_CHECK; 3823 EV_FREQUENT_CHECK;
2680} 3824}
… …
2689 EV_FREQUENT_CHECK; 3833 EV_FREQUENT_CHECK;
2690 3834
2691#if EV_USE_INOTIFY 3835#if EV_USE_INOTIFY
2692 infy_del (EV_A_ w); 3836 infy_del (EV_A_ w);
2693#endif 3837#endif
3838
3839 if (ev_is_active (&w->timer))
3840 {
3841 ev_ref (EV_A);
2694 ev_timer_stop (EV_A_ &w->timer); 3842 ev_timer_stop (EV_A_ &w->timer);
3843 }
2695 3844
2696 ev_stop (EV_A_ (W)w); 3845 ev_stop (EV_A_ (W)w);
2697 3846
2698 EV_FREQUENT_CHECK; 3847 EV_FREQUENT_CHECK;
2699} 3848}
… …
2744 3893
2745 EV_FREQUENT_CHECK; 3894 EV_FREQUENT_CHECK;
2746} 3895}
2747#endif 3896#endif
2748 3897
3898#if EV_PREPARE_ENABLE
2749void 3899void
2750ev_prepare_start (EV_P_ ev_prepare *w) 3900ev_prepare_start (EV_P_ ev_prepare *w)
2751{ 3901{
2752 if (expect_false (ev_is_active (w))) 3902 if (expect_false (ev_is_active (w)))
2753 return; 3903 return;
… …
2779 3929
2780 ev_stop (EV_A_ (W)w); 3930 ev_stop (EV_A_ (W)w);
2781 3931
2782 EV_FREQUENT_CHECK; 3932 EV_FREQUENT_CHECK;
2783} 3933}
3934#endif
2784 3935
3936#if EV_CHECK_ENABLE
2785void 3937void
2786ev_check_start (EV_P_ ev_check *w) 3938ev_check_start (EV_P_ ev_check *w)
2787{ 3939{
2788 if (expect_false (ev_is_active (w))) 3940 if (expect_false (ev_is_active (w)))
2789 return; 3941 return;
… …
2815 3967
2816 ev_stop (EV_A_ (W)w); 3968 ev_stop (EV_A_ (W)w);
2817 3969
2818 EV_FREQUENT_CHECK; 3970 EV_FREQUENT_CHECK;
2819} 3971}
3972#endif
2820 3973
2821#if EV_EMBED_ENABLE 3974#if EV_EMBED_ENABLE
2822void noinline 3975void noinline
2823ev_embed_sweep (EV_P_ ev_embed *w) 3976ev_embed_sweep (EV_P_ ev_embed *w)
2824{ 3977{
2825 ev_loop (w->other, EVLOOP_NONBLOCK); 3978 ev_run (w->other, EVRUN_NOWAIT);
2826} 3979}
2827 3980
2828static void 3981static void
2829embed_io_cb (EV_P_ ev_io *io, int revents) 3982embed_io_cb (EV_P_ ev_io *io, int revents)
2830{ 3983{
2831 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3984 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2832 3985
2833 if (ev_cb (w)) 3986 if (ev_cb (w))
2834 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3987 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2835 else 3988 else
2836 ev_loop (w->other, EVLOOP_NONBLOCK); 3989 ev_run (w->other, EVRUN_NOWAIT);
2837} 3990}
2838 3991
2839static void 3992static void
2840embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3993embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2841{ 3994{
2842 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3995 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2843 3996
2844 { 3997 {
2845 struct ev_loop *loop = w->other; 3998 EV_P = w->other;
2846 3999
2847 while (fdchangecnt) 4000 while (fdchangecnt)
2848 { 4001 {
2849 fd_reify (EV_A); 4002 fd_reify (EV_A);
2850 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4003 ev_run (EV_A_ EVRUN_NOWAIT);
2851 } 4004 }
2852 } 4005 }
2853} 4006}
2854 4007
2855static void 4008static void
2856embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 4009embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2857{ 4010{
2858 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4011 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2859 4012
4013 ev_embed_stop (EV_A_ w);
4014
2860 { 4015 {
2861 struct ev_loop *loop = w->other; 4016 EV_P = w->other;
2862 4017
2863 ev_loop_fork (EV_A); 4018 ev_loop_fork (EV_A);
4019 ev_run (EV_A_ EVRUN_NOWAIT);
2864 } 4020 }
4021
4022 ev_embed_start (EV_A_ w);
2865} 4023}
2866 4024
2867#if 0 4025#if 0
2868static void 4026static void
2869embed_idle_cb (EV_P_ ev_idle *idle, int revents) 4027embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2877{ 4035{
2878 if (expect_false (ev_is_active (w))) 4036 if (expect_false (ev_is_active (w)))
2879 return; 4037 return;
2880 4038
2881 { 4039 {
2882 struct ev_loop *loop = w->other; 4040 EV_P = w->other;
2883 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4041 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2884 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4042 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2885 } 4043 }
2886 4044
2887 EV_FREQUENT_CHECK; 4045 EV_FREQUENT_CHECK;
2888 4046
… …
2914 4072
2915 ev_io_stop (EV_A_ &w->io); 4073 ev_io_stop (EV_A_ &w->io);
2916 ev_prepare_stop (EV_A_ &w->prepare); 4074 ev_prepare_stop (EV_A_ &w->prepare);
2917 ev_fork_stop (EV_A_ &w->fork); 4075 ev_fork_stop (EV_A_ &w->fork);
2918 4076
4077 ev_stop (EV_A_ (W)w);
4078
2919 EV_FREQUENT_CHECK; 4079 EV_FREQUENT_CHECK;
2920} 4080}
2921#endif 4081#endif
2922 4082
2923#if EV_FORK_ENABLE 4083#if EV_FORK_ENABLE
… …
2956 4116
2957 EV_FREQUENT_CHECK; 4117 EV_FREQUENT_CHECK;
2958} 4118}
2959#endif 4119#endif
2960 4120
4121#if EV_CLEANUP_ENABLE
4122void
4123ev_cleanup_start (EV_P_ ev_cleanup *w)
4124{
4125 if (expect_false (ev_is_active (w)))
4126 return;
4127
4128 EV_FREQUENT_CHECK;
4129
4130 ev_start (EV_A_ (W)w, ++cleanupcnt);
4131 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4132 cleanups [cleanupcnt - 1] = w;
4133
4134 /* cleanup watchers should never keep a refcount on the loop */
4135 ev_unref (EV_A);
4136 EV_FREQUENT_CHECK;
4137}
4138
4139void
4140ev_cleanup_stop (EV_P_ ev_cleanup *w)
4141{
4142 clear_pending (EV_A_ (W)w);
4143 if (expect_false (!ev_is_active (w)))
4144 return;
4145
4146 EV_FREQUENT_CHECK;
4147 ev_ref (EV_A);
4148
4149 {
4150 int active = ev_active (w);
4151
4152 cleanups [active - 1] = cleanups [--cleanupcnt];
4153 ev_active (cleanups [active - 1]) = active;
4154 }
4155
4156 ev_stop (EV_A_ (W)w);
4157
4158 EV_FREQUENT_CHECK;
4159}
4160#endif
4161
2961#if EV_ASYNC_ENABLE 4162#if EV_ASYNC_ENABLE
2962void 4163void
2963ev_async_start (EV_P_ ev_async *w) 4164ev_async_start (EV_P_ ev_async *w)
2964{ 4165{
2965 if (expect_false (ev_is_active (w))) 4166 if (expect_false (ev_is_active (w)))
2966 return; 4167 return;
2967 4168
4169 w->sent = 0;
4170
2968 evpipe_init (EV_A); 4171 evpipe_init (EV_A);
2969 4172
2970 EV_FREQUENT_CHECK; 4173 EV_FREQUENT_CHECK;
2971 4174
2972 ev_start (EV_A_ (W)w, ++asynccnt); 4175 ev_start (EV_A_ (W)w, ++asynccnt);
… …
2999 4202
3000void 4203void
3001ev_async_send (EV_P_ ev_async *w) 4204ev_async_send (EV_P_ ev_async *w)
3002{ 4205{
3003 w->sent = 1; 4206 w->sent = 1;
3004 evpipe_write (EV_A_ &gotasync); 4207 evpipe_write (EV_A_ &async_pending);
3005} 4208}
3006#endif 4209#endif
3007 4210
3008/*****************************************************************************/ 4211/*****************************************************************************/
3009 4212
… …
3049{ 4252{
3050 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4253 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3051 4254
3052 if (expect_false (!once)) 4255 if (expect_false (!once))
3053 { 4256 {
3054 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4257 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3055 return; 4258 return;
3056 } 4259 }
3057 4260
3058 once->cb = cb; 4261 once->cb = cb;
3059 once->arg = arg; 4262 once->arg = arg;
… …
3071 ev_timer_set (&once->to, timeout, 0.); 4274 ev_timer_set (&once->to, timeout, 0.);
3072 ev_timer_start (EV_A_ &once->to); 4275 ev_timer_start (EV_A_ &once->to);
3073 } 4276 }
3074} 4277}
3075 4278
4279/*****************************************************************************/
4280
4281#if EV_WALK_ENABLE
4282void ecb_cold
4283ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
4284{
4285 int i, j;
4286 ev_watcher_list *wl, *wn;
4287
4288 if (types & (EV_IO | EV_EMBED))
4289 for (i = 0; i < anfdmax; ++i)
4290 for (wl = anfds [i].head; wl; )
4291 {
4292 wn = wl->next;
4293
4294#if EV_EMBED_ENABLE
4295 if (ev_cb ((ev_io *)wl) == embed_io_cb)
4296 {
4297 if (types & EV_EMBED)
4298 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
4299 }
4300 else
4301#endif
4302#if EV_USE_INOTIFY
4303 if (ev_cb ((ev_io *)wl) == infy_cb)
4304 ;
4305 else
4306#endif
4307 if ((ev_io *)wl != &pipe_w)
4308 if (types & EV_IO)
4309 cb (EV_A_ EV_IO, wl);
4310
4311 wl = wn;
4312 }
4313
4314 if (types & (EV_TIMER | EV_STAT))
4315 for (i = timercnt + HEAP0; i-- > HEAP0; )
4316#if EV_STAT_ENABLE
4317 /*TODO: timer is not always active*/
4318 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
4319 {
4320 if (types & EV_STAT)
4321 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
4322 }
4323 else
4324#endif
4325 if (types & EV_TIMER)
4326 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
4327
4328#if EV_PERIODIC_ENABLE
4329 if (types & EV_PERIODIC)
4330 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4331 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4332#endif
4333
4334#if EV_IDLE_ENABLE
4335 if (types & EV_IDLE)
4336 for (j = NUMPRI; j--; )
4337 for (i = idlecnt [j]; i--; )
4338 cb (EV_A_ EV_IDLE, idles [j][i]);
4339#endif
4340
4341#if EV_FORK_ENABLE
4342 if (types & EV_FORK)
4343 for (i = forkcnt; i--; )
4344 if (ev_cb (forks [i]) != embed_fork_cb)
4345 cb (EV_A_ EV_FORK, forks [i]);
4346#endif
4347
4348#if EV_ASYNC_ENABLE
4349 if (types & EV_ASYNC)
4350 for (i = asynccnt; i--; )
4351 cb (EV_A_ EV_ASYNC, asyncs [i]);
4352#endif
4353
4354#if EV_PREPARE_ENABLE
4355 if (types & EV_PREPARE)
4356 for (i = preparecnt; i--; )
4357# if EV_EMBED_ENABLE
4358 if (ev_cb (prepares [i]) != embed_prepare_cb)
4359# endif
4360 cb (EV_A_ EV_PREPARE, prepares [i]);
4361#endif
4362
4363#if EV_CHECK_ENABLE
4364 if (types & EV_CHECK)
4365 for (i = checkcnt; i--; )
4366 cb (EV_A_ EV_CHECK, checks [i]);
4367#endif
4368
4369#if EV_SIGNAL_ENABLE
4370 if (types & EV_SIGNAL)
4371 for (i = 0; i < EV_NSIG - 1; ++i)
4372 for (wl = signals [i].head; wl; )
4373 {
4374 wn = wl->next;
4375 cb (EV_A_ EV_SIGNAL, wl);
4376 wl = wn;
4377 }
4378#endif
4379
4380#if EV_CHILD_ENABLE
4381 if (types & EV_CHILD)
4382 for (i = (EV_PID_HASHSIZE); i--; )
4383 for (wl = childs [i]; wl; )
4384 {
4385 wn = wl->next;
4386 cb (EV_A_ EV_CHILD, wl);
4387 wl = wn;
4388 }
4389#endif
4390/* EV_STAT 0x00001000 /* stat data changed */
4391/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4392}
4393#endif
4394
3076#if EV_MULTIPLICITY 4395#if EV_MULTIPLICITY
3077 #include "ev_wrap.h" 4396 #include "ev_wrap.h"
3078#endif 4397#endif
3079 4398
3080#ifdef __cplusplus 4399EV_CPP(})
3081}
3082#endif
3083 4400

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