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Comparing libev/ev.c (file contents):
Revision 1.272 by root, Mon Nov 3 12:17:40 2008 UTC vs.
Revision 1.396 by root, Wed Aug 24 16:13:17 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
51 47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
53
54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME
58# define EV_USE_REALTIME 0
59# endif
60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1
62# endif
63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL)
65# define EV_USE_CLOCK_SYSCALL 0
66# endif
67
52# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
55# endif 71# endif
56# ifndef EV_USE_REALTIME 72# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 73# define EV_USE_REALTIME 0
58# endif 74# endif
59# else 75# else
60# ifndef EV_USE_MONOTONIC 76# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 77# define EV_USE_MONOTONIC 0
62# endif 78# endif
63# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
65# endif 81# endif
66# endif 82# endif
67 83
84# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
71# else 88# else
89# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
74# endif 100# endif
75 101
102# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 105# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 106# else
107# undef EV_USE_POLL
88# define EV_USE_POLL 0 108# define EV_USE_POLL 0
89# endif
90# endif 109# endif
91 110
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
95# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
98# endif 118# endif
99 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
106# endif 127# endif
107 128
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
111# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
114# endif 136# endif
115 137
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
122# endif 145# endif
123 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
154# endif
155
156# if HAVE_EVENTFD
157# ifndef EV_USE_EVENTFD
158# define EV_USE_EVENTFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
130# endif 163# endif
131 164
132#endif 165#endif
133 166
134#include <math.h>
135#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
136#include <fcntl.h> 169#include <fcntl.h>
137#include <stddef.h> 170#include <stddef.h>
138 171
139#include <stdio.h> 172#include <stdio.h>
140 173
141#include <assert.h> 174#include <assert.h>
142#include <errno.h> 175#include <errno.h>
143#include <sys/types.h> 176#include <sys/types.h>
144#include <time.h> 177#include <time.h>
178#include <limits.h>
145 179
146#include <signal.h> 180#include <signal.h>
147 181
148#ifdef EV_H 182#ifdef EV_H
149# include EV_H 183# include EV_H
150#else 184#else
151# include "ev.h" 185# include "ev.h"
152#endif 186#endif
187
188EV_CPP(extern "C" {)
153 189
154#ifndef _WIN32 190#ifndef _WIN32
155# include <sys/time.h> 191# include <sys/time.h>
156# include <sys/wait.h> 192# include <sys/wait.h>
157# include <unistd.h> 193# include <unistd.h>
… …
160# define WIN32_LEAN_AND_MEAN 196# define WIN32_LEAN_AND_MEAN
161# include <windows.h> 197# include <windows.h>
162# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
163# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
164# endif 200# endif
201# undef EV_AVOID_STDIO
165#endif 202#endif
203
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
166 211
167/* this block tries to deduce configuration from header-defined symbols and defaults */ 212/* this block tries to deduce configuration from header-defined symbols and defaults */
213
214/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG)
216/* use what's provided */
217#elif defined (NSIG)
218# define EV_NSIG (NSIG)
219#elif defined(_NSIG)
220# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX)
222# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX)
224# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX)
226# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG)
228# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG)
230# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE)
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig)
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else
236# error "unable to find value for NSIG, please report"
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif
241
242#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0
244#endif
245
246#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else
250# define EV_USE_CLOCK_SYSCALL 0
251# endif
252#endif
168 253
169#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 256# define EV_USE_MONOTONIC EV_FEATURE_OS
172# else 257# else
173# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
174# endif 259# endif
175#endif 260#endif
176 261
177#ifndef EV_USE_REALTIME 262#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 264#endif
180 265
181#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 267# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 268# define EV_USE_NANOSLEEP EV_FEATURE_OS
184# else 269# else
185# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
186# endif 271# endif
187#endif 272#endif
188 273
189#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
190# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
191#endif 276#endif
192 277
193#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
194# ifdef _WIN32 279# ifdef _WIN32
195# define EV_USE_POLL 0 280# define EV_USE_POLL 0
196# else 281# else
197# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
198# endif 283# endif
199#endif 284#endif
200 285
201#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
204# else 289# else
205# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
206# endif 291# endif
207#endif 292#endif
208 293
… …
214# define EV_USE_PORT 0 299# define EV_USE_PORT 0
215#endif 300#endif
216 301
217#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
220# else 305# else
221# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
222# endif 307# endif
223#endif 308#endif
224 309
225#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
226# if EV_MINIMAL 311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
227# define EV_PID_HASHSIZE 1
228# else
229# define EV_PID_HASHSIZE 16
230# endif
231#endif 312#endif
232 313
233#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
234# if EV_MINIMAL 315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
235# define EV_INOTIFY_HASHSIZE 1
236# else
237# define EV_INOTIFY_HASHSIZE 16
238# endif
239#endif 316#endif
240 317
241#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
244# else 321# else
245# define EV_USE_EVENTFD 0 322# define EV_USE_EVENTFD 0
323# endif
324#endif
325
326#ifndef EV_USE_SIGNALFD
327# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
328# define EV_USE_SIGNALFD EV_FEATURE_OS
329# else
330# define EV_USE_SIGNALFD 0
246# endif 331# endif
247#endif 332#endif
248 333
249#if 0 /* debugging */ 334#if 0 /* debugging */
250# define EV_VERIFY 3 335# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 336# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 337# define EV_HEAP_CACHE_AT 1
253#endif 338#endif
254 339
255#ifndef EV_VERIFY 340#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL 341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
257#endif 342#endif
258 343
259#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
261#endif 346#endif
262 347
263#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
264# define EV_HEAP_CACHE_AT !EV_MINIMAL 349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif
351
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h>
356# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1
360# else
361# undef EV_USE_CLOCK_SYSCALL
362# define EV_USE_CLOCK_SYSCALL 0
363# endif
265#endif 364#endif
266 365
267/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 366/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
268 373
269#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
270# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
271# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
272#endif 377#endif
… …
280# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
281# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
282#endif 387#endif
283 388
284#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
285# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
286# include <sys/select.h> 392# include <sys/select.h>
287# endif 393# endif
288#endif 394#endif
289 395
290#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
291# include <sys/utsname.h> 397# include <sys/statfs.h>
292# include <sys/inotify.h> 398# include <sys/inotify.h>
293/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
294# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
295# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
296# define EV_USE_INOTIFY 0 402# define EV_USE_INOTIFY 0
… …
302#endif 408#endif
303 409
304#if EV_USE_EVENTFD 410#if EV_USE_EVENTFD
305/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
306# include <stdint.h> 412# include <stdint.h>
307# ifdef __cplusplus 413# ifndef EFD_NONBLOCK
308extern "C" { 414# define EFD_NONBLOCK O_NONBLOCK
309# endif 415# endif
310int eventfd (unsigned int initval, int flags); 416# ifndef EFD_CLOEXEC
311# ifdef __cplusplus 417# ifdef O_CLOEXEC
312} 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
313# endif 422# endif
423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
424#endif
425
426#if EV_USE_SIGNALFD
427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
428# include <stdint.h>
429# ifndef SFD_NONBLOCK
430# define SFD_NONBLOCK O_NONBLOCK
431# endif
432# ifndef SFD_CLOEXEC
433# ifdef O_CLOEXEC
434# define SFD_CLOEXEC O_CLOEXEC
435# else
436# define SFD_CLOEXEC 02000000
437# endif
438# endif
439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
440
441struct signalfd_siginfo
442{
443 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)];
445};
314#endif 446#endif
315 447
316/**/ 448/**/
317 449
318#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
319# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
320#else 452#else
321# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
322#endif 454#endif
323 455
324/* 456/*
325 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
326 * It is added to ev_rt_now when scheduling periodics
327 * to ensure progress, time-wise, even when rounding
328 * errors are against us.
329 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
330 * Better solutions welcome.
331 */ 459 */
332#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
333 462
334#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
335#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
336/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
337 465
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
468
469/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ECB.H BEGIN */
471/*
472 * libecb - http://software.schmorp.de/pkg/libecb
473 *
474 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de>
475 * Copyright (©) 2011 Emanuele Giaquinta
476 * All rights reserved.
477 *
478 * Redistribution and use in source and binary forms, with or without modifica-
479 * tion, are permitted provided that the following conditions are met:
480 *
481 * 1. Redistributions of source code must retain the above copyright notice,
482 * this list of conditions and the following disclaimer.
483 *
484 * 2. Redistributions in binary form must reproduce the above copyright
485 * notice, this list of conditions and the following disclaimer in the
486 * documentation and/or other materials provided with the distribution.
487 *
488 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
489 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
490 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
491 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
492 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
493 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
494 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
495 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
496 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
497 * OF THE POSSIBILITY OF SUCH DAMAGE.
498 */
499
500#ifndef ECB_H
501#define ECB_H
502
503#ifdef _WIN32
504 typedef signed char int8_t;
505 typedef unsigned char uint8_t;
506 typedef signed short int16_t;
507 typedef unsigned short uint16_t;
508 typedef signed int int32_t;
509 typedef unsigned int uint32_t;
338#if __GNUC__ >= 4 510 #if __GNUC__
339# define expect(expr,value) __builtin_expect ((expr),(value)) 511 typedef signed long long int64_t;
340# define noinline __attribute__ ((noinline)) 512 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t;
516 #endif
341#else 517#else
342# define expect(expr,value) (expr) 518 #include <inttypes.h>
343# define noinline
344# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
345# define inline
346# endif 519#endif
520
521/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so.
525 * we try to detect these and simply assume they are not gcc - if they have
526 * an issue with that they should have done it right in the first place.
527 */
528#ifndef ECB_GCC_VERSION
529 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
530 #define ECB_GCC_VERSION(major,minor) 0
531 #else
532 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
347#endif 533 #endif
534#endif
348 535
536/*****************************************************************************/
537
538/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
539/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
540
541#if ECB_NO_THREADS || ECB_NO_SMP
542 #define ECB_MEMORY_FENCE do { } while (0)
543#endif
544
545#ifndef ECB_MEMORY_FENCE
546 #if ECB_GCC_VERSION(2,5)
547 #if __i386__
548 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
549 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
550 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
551 #elif __amd64
552 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
553 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
554 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
555 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
556 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
557 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \
558 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__)
559 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
560 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \
561 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ )
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
563 #endif
564 #endif
565#endif
566
567#ifndef ECB_MEMORY_FENCE
568 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER)
569 #define ECB_MEMORY_FENCE __sync_synchronize ()
570 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
571 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
572 #elif _MSC_VER >= 1400 /* VC++ 2005 */
573 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
574 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
575 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
576 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
577 #elif defined(_WIN32)
578 #include <WinNT.h>
579 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
580 #endif
581#endif
582
583#ifndef ECB_MEMORY_FENCE
584 #if !ECB_AVOID_PTHREADS
585 /*
586 * if you get undefined symbol references to pthread_mutex_lock,
587 * or failure to find pthread.h, then you should implement
588 * the ECB_MEMORY_FENCE operations for your cpu/compiler
589 * OR provide pthread.h and link against the posix thread library
590 * of your system.
591 */
592 #include <pthread.h>
593 #define ECB_NEEDS_PTHREADS 1
594 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
595
596 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
597 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
598 #endif
599#endif
600
601#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
602 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
603#endif
604
605#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
606 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
607#endif
608
609/*****************************************************************************/
610
611#define ECB_C99 (__STDC_VERSION__ >= 199901L)
612
613#if __cplusplus
614 #define ecb_inline static inline
615#elif ECB_GCC_VERSION(2,5)
616 #define ecb_inline static __inline__
617#elif ECB_C99
618 #define ecb_inline static inline
619#else
620 #define ecb_inline static
621#endif
622
623#if ECB_GCC_VERSION(3,3)
624 #define ecb_restrict __restrict__
625#elif ECB_C99
626 #define ecb_restrict restrict
627#else
628 #define ecb_restrict
629#endif
630
631typedef int ecb_bool;
632
633#define ECB_CONCAT_(a, b) a ## b
634#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
635#define ECB_STRINGIFY_(a) # a
636#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
637
638#define ecb_function_ ecb_inline
639
640#if ECB_GCC_VERSION(3,1)
641 #define ecb_attribute(attrlist) __attribute__(attrlist)
642 #define ecb_is_constant(expr) __builtin_constant_p (expr)
643 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
644 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
645#else
646 #define ecb_attribute(attrlist)
647 #define ecb_is_constant(expr) 0
648 #define ecb_expect(expr,value) (expr)
649 #define ecb_prefetch(addr,rw,locality)
650#endif
651
652/* no emulation for ecb_decltype */
653#if ECB_GCC_VERSION(4,5)
654 #define ecb_decltype(x) __decltype(x)
655#elif ECB_GCC_VERSION(3,0)
656 #define ecb_decltype(x) __typeof(x)
657#endif
658
659#define ecb_noinline ecb_attribute ((__noinline__))
660#define ecb_noreturn ecb_attribute ((__noreturn__))
661#define ecb_unused ecb_attribute ((__unused__))
662#define ecb_const ecb_attribute ((__const__))
663#define ecb_pure ecb_attribute ((__pure__))
664
665#if ECB_GCC_VERSION(4,3)
666 #define ecb_artificial ecb_attribute ((__artificial__))
667 #define ecb_hot ecb_attribute ((__hot__))
668 #define ecb_cold ecb_attribute ((__cold__))
669#else
670 #define ecb_artificial
671 #define ecb_hot
672 #define ecb_cold
673#endif
674
675/* put around conditional expressions if you are very sure that the */
676/* expression is mostly true or mostly false. note that these return */
677/* booleans, not the expression. */
349#define expect_false(expr) expect ((expr) != 0, 0) 678#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
350#define expect_true(expr) expect ((expr) != 0, 1) 679#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
680/* for compatibility to the rest of the world */
681#define ecb_likely(expr) ecb_expect_true (expr)
682#define ecb_unlikely(expr) ecb_expect_false (expr)
683
684/* count trailing zero bits and count # of one bits */
685#if ECB_GCC_VERSION(3,4)
686 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
687 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
688 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
689 #define ecb_ctz32(x) __builtin_ctz (x)
690 #define ecb_ctz64(x) __builtin_ctzll (x)
691 #define ecb_popcount32(x) __builtin_popcount (x)
692 /* no popcountll */
693#else
694 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
695 ecb_function_ int
696 ecb_ctz32 (uint32_t x)
697 {
698 int r = 0;
699
700 x &= ~x + 1; /* this isolates the lowest bit */
701
702#if ECB_branchless_on_i386
703 r += !!(x & 0xaaaaaaaa) << 0;
704 r += !!(x & 0xcccccccc) << 1;
705 r += !!(x & 0xf0f0f0f0) << 2;
706 r += !!(x & 0xff00ff00) << 3;
707 r += !!(x & 0xffff0000) << 4;
708#else
709 if (x & 0xaaaaaaaa) r += 1;
710 if (x & 0xcccccccc) r += 2;
711 if (x & 0xf0f0f0f0) r += 4;
712 if (x & 0xff00ff00) r += 8;
713 if (x & 0xffff0000) r += 16;
714#endif
715
716 return r;
717 }
718
719 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
720 ecb_function_ int
721 ecb_ctz64 (uint64_t x)
722 {
723 int shift = x & 0xffffffffU ? 0 : 32;
724 return ecb_ctz32 (x >> shift) + shift;
725 }
726
727 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
728 ecb_function_ int
729 ecb_popcount32 (uint32_t x)
730 {
731 x -= (x >> 1) & 0x55555555;
732 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
733 x = ((x >> 4) + x) & 0x0f0f0f0f;
734 x *= 0x01010101;
735
736 return x >> 24;
737 }
738
739 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
740 ecb_function_ int ecb_ld32 (uint32_t x)
741 {
742 int r = 0;
743
744 if (x >> 16) { x >>= 16; r += 16; }
745 if (x >> 8) { x >>= 8; r += 8; }
746 if (x >> 4) { x >>= 4; r += 4; }
747 if (x >> 2) { x >>= 2; r += 2; }
748 if (x >> 1) { r += 1; }
749
750 return r;
751 }
752
753 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
754 ecb_function_ int ecb_ld64 (uint64_t x)
755 {
756 int r = 0;
757
758 if (x >> 32) { x >>= 32; r += 32; }
759
760 return r + ecb_ld32 (x);
761 }
762#endif
763
764/* popcount64 is only available on 64 bit cpus as gcc builtin */
765/* so for this version we are lazy */
766ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
767ecb_function_ int
768ecb_popcount64 (uint64_t x)
769{
770 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
771}
772
773ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
774ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
775ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
776ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
777ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
778ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
779ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
780ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
781
782ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
783ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
784ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
785ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
786ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
787ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
788ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
789ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
790
791#if ECB_GCC_VERSION(4,3)
792 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
793 #define ecb_bswap32(x) __builtin_bswap32 (x)
794 #define ecb_bswap64(x) __builtin_bswap64 (x)
795#else
796 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
797 ecb_function_ uint16_t
798 ecb_bswap16 (uint16_t x)
799 {
800 return ecb_rotl16 (x, 8);
801 }
802
803 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
804 ecb_function_ uint32_t
805 ecb_bswap32 (uint32_t x)
806 {
807 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
808 }
809
810 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
811 ecb_function_ uint64_t
812 ecb_bswap64 (uint64_t x)
813 {
814 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
815 }
816#endif
817
818#if ECB_GCC_VERSION(4,5)
819 #define ecb_unreachable() __builtin_unreachable ()
820#else
821 /* this seems to work fine, but gcc always emits a warning for it :/ */
822 ecb_function_ void ecb_unreachable (void) ecb_noreturn;
823 ecb_function_ void ecb_unreachable (void) { }
824#endif
825
826/* try to tell the compiler that some condition is definitely true */
827#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
828
829ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
830ecb_function_ unsigned char
831ecb_byteorder_helper (void)
832{
833 const uint32_t u = 0x11223344;
834 return *(unsigned char *)&u;
835}
836
837ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
838ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
839ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
840ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
841
842#if ECB_GCC_VERSION(3,0) || ECB_C99
843 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
844#else
845 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
846#endif
847
848#if ecb_cplusplus_does_not_suck
849 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
850 template<typename T, int N>
851 static inline int ecb_array_length (const T (&arr)[N])
852 {
853 return N;
854 }
855#else
856 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
857#endif
858
859#endif
860
861/* ECB.H END */
862
863#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
864/* if your architetcure doesn't need memory fences, e.g. because it is
865 * single-cpu/core, or if you use libev in a project that doesn't use libev
866 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
867 * libev, in which casess the memory fences become nops.
868 * alternatively, you can remove this #error and link against libpthread,
869 * which will then provide the memory fences.
870 */
871# error "memory fences not defined for your architecture, please report"
872#endif
873
874#ifndef ECB_MEMORY_FENCE
875# define ECB_MEMORY_FENCE do { } while (0)
876# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
877# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
878#endif
879
880#define expect_false(cond) ecb_expect_false (cond)
881#define expect_true(cond) ecb_expect_true (cond)
882#define noinline ecb_noinline
883
351#define inline_size static inline 884#define inline_size ecb_inline
352 885
353#if EV_MINIMAL 886#if EV_FEATURE_CODE
887# define inline_speed ecb_inline
888#else
354# define inline_speed static noinline 889# define inline_speed static noinline
890#endif
891
892#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
893
894#if EV_MINPRI == EV_MAXPRI
895# define ABSPRI(w) (((W)w), 0)
355#else 896#else
356# define inline_speed static inline
357#endif
358
359#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
360#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 897# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
898#endif
361 899
362#define EMPTY /* required for microsofts broken pseudo-c compiler */ 900#define EMPTY /* required for microsofts broken pseudo-c compiler */
363#define EMPTY2(a,b) /* used to suppress some warnings */ 901#define EMPTY2(a,b) /* used to suppress some warnings */
364 902
365typedef ev_watcher *W; 903typedef ev_watcher *W;
… …
367typedef ev_watcher_time *WT; 905typedef ev_watcher_time *WT;
368 906
369#define ev_active(w) ((W)(w))->active 907#define ev_active(w) ((W)(w))->active
370#define ev_at(w) ((WT)(w))->at 908#define ev_at(w) ((WT)(w))->at
371 909
910#if EV_USE_REALTIME
911/* sig_atomic_t is used to avoid per-thread variables or locking but still */
912/* giving it a reasonably high chance of working on typical architectures */
913static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
914#endif
915
372#if EV_USE_MONOTONIC 916#if EV_USE_MONOTONIC
373/* sig_atomic_t is used to avoid per-thread variables or locking but still */
374/* giving it a reasonably high chance of working on typical architetcures */
375static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 917static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
918#endif
919
920#ifndef EV_FD_TO_WIN32_HANDLE
921# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
922#endif
923#ifndef EV_WIN32_HANDLE_TO_FD
924# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
925#endif
926#ifndef EV_WIN32_CLOSE_FD
927# define EV_WIN32_CLOSE_FD(fd) close (fd)
376#endif 928#endif
377 929
378#ifdef _WIN32 930#ifdef _WIN32
379# include "ev_win32.c" 931# include "ev_win32.c"
380#endif 932#endif
381 933
382/*****************************************************************************/ 934/*****************************************************************************/
383 935
936/* define a suitable floor function (only used by periodics atm) */
937
938#if EV_USE_FLOOR
939# include <math.h>
940# define ev_floor(v) floor (v)
941#else
942
943#include <float.h>
944
945/* a floor() replacement function, should be independent of ev_tstamp type */
946static ev_tstamp noinline
947ev_floor (ev_tstamp v)
948{
949 /* the choice of shift factor is not terribly important */
950#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
951 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
952#else
953 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
954#endif
955
956 /* argument too large for an unsigned long? */
957 if (expect_false (v >= shift))
958 {
959 ev_tstamp f;
960
961 if (v == v - 1.)
962 return v; /* very large number */
963
964 f = shift * ev_floor (v * (1. / shift));
965 return f + ev_floor (v - f);
966 }
967
968 /* special treatment for negative args? */
969 if (expect_false (v < 0.))
970 {
971 ev_tstamp f = -ev_floor (-v);
972
973 return f - (f == v ? 0 : 1);
974 }
975
976 /* fits into an unsigned long */
977 return (unsigned long)v;
978}
979
980#endif
981
982/*****************************************************************************/
983
984#ifdef __linux
985# include <sys/utsname.h>
986#endif
987
988static unsigned int noinline ecb_cold
989ev_linux_version (void)
990{
991#ifdef __linux
992 unsigned int v = 0;
993 struct utsname buf;
994 int i;
995 char *p = buf.release;
996
997 if (uname (&buf))
998 return 0;
999
1000 for (i = 3+1; --i; )
1001 {
1002 unsigned int c = 0;
1003
1004 for (;;)
1005 {
1006 if (*p >= '0' && *p <= '9')
1007 c = c * 10 + *p++ - '0';
1008 else
1009 {
1010 p += *p == '.';
1011 break;
1012 }
1013 }
1014
1015 v = (v << 8) | c;
1016 }
1017
1018 return v;
1019#else
1020 return 0;
1021#endif
1022}
1023
1024/*****************************************************************************/
1025
1026#if EV_AVOID_STDIO
1027static void noinline ecb_cold
1028ev_printerr (const char *msg)
1029{
1030 write (STDERR_FILENO, msg, strlen (msg));
1031}
1032#endif
1033
384static void (*syserr_cb)(const char *msg); 1034static void (*syserr_cb)(const char *msg);
385 1035
386void 1036void ecb_cold
387ev_set_syserr_cb (void (*cb)(const char *msg)) 1037ev_set_syserr_cb (void (*cb)(const char *msg))
388{ 1038{
389 syserr_cb = cb; 1039 syserr_cb = cb;
390} 1040}
391 1041
392static void noinline 1042static void noinline ecb_cold
393ev_syserr (const char *msg) 1043ev_syserr (const char *msg)
394{ 1044{
395 if (!msg) 1045 if (!msg)
396 msg = "(libev) system error"; 1046 msg = "(libev) system error";
397 1047
398 if (syserr_cb) 1048 if (syserr_cb)
399 syserr_cb (msg); 1049 syserr_cb (msg);
400 else 1050 else
401 { 1051 {
1052#if EV_AVOID_STDIO
1053 ev_printerr (msg);
1054 ev_printerr (": ");
1055 ev_printerr (strerror (errno));
1056 ev_printerr ("\n");
1057#else
402 perror (msg); 1058 perror (msg);
1059#endif
403 abort (); 1060 abort ();
404 } 1061 }
405} 1062}
406 1063
407static void * 1064static void *
408ev_realloc_emul (void *ptr, long size) 1065ev_realloc_emul (void *ptr, long size)
409{ 1066{
1067#if __GLIBC__
1068 return realloc (ptr, size);
1069#else
410 /* some systems, notably openbsd and darwin, fail to properly 1070 /* some systems, notably openbsd and darwin, fail to properly
411 * implement realloc (x, 0) (as required by both ansi c-98 and 1071 * implement realloc (x, 0) (as required by both ansi c-89 and
412 * the single unix specification, so work around them here. 1072 * the single unix specification, so work around them here.
413 */ 1073 */
414 1074
415 if (size) 1075 if (size)
416 return realloc (ptr, size); 1076 return realloc (ptr, size);
417 1077
418 free (ptr); 1078 free (ptr);
419 return 0; 1079 return 0;
1080#endif
420} 1081}
421 1082
422static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1083static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
423 1084
424void 1085void ecb_cold
425ev_set_allocator (void *(*cb)(void *ptr, long size)) 1086ev_set_allocator (void *(*cb)(void *ptr, long size))
426{ 1087{
427 alloc = cb; 1088 alloc = cb;
428} 1089}
429 1090
… …
432{ 1093{
433 ptr = alloc (ptr, size); 1094 ptr = alloc (ptr, size);
434 1095
435 if (!ptr && size) 1096 if (!ptr && size)
436 { 1097 {
1098#if EV_AVOID_STDIO
1099 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1100#else
437 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1101 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1102#endif
438 abort (); 1103 abort ();
439 } 1104 }
440 1105
441 return ptr; 1106 return ptr;
442} 1107}
… …
444#define ev_malloc(size) ev_realloc (0, (size)) 1109#define ev_malloc(size) ev_realloc (0, (size))
445#define ev_free(ptr) ev_realloc ((ptr), 0) 1110#define ev_free(ptr) ev_realloc ((ptr), 0)
446 1111
447/*****************************************************************************/ 1112/*****************************************************************************/
448 1113
1114/* set in reify when reification needed */
1115#define EV_ANFD_REIFY 1
1116
1117/* file descriptor info structure */
449typedef struct 1118typedef struct
450{ 1119{
451 WL head; 1120 WL head;
452 unsigned char events; 1121 unsigned char events; /* the events watched for */
453 unsigned char reify; 1122 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
454 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1123 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
455 unsigned char unused; 1124 unsigned char unused;
456#if EV_USE_EPOLL 1125#if EV_USE_EPOLL
457 unsigned int egen; /* generation counter to counter epoll bugs */ 1126 unsigned int egen; /* generation counter to counter epoll bugs */
458#endif 1127#endif
459#if EV_SELECT_IS_WINSOCKET 1128#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
460 SOCKET handle; 1129 SOCKET handle;
461#endif 1130#endif
1131#if EV_USE_IOCP
1132 OVERLAPPED or, ow;
1133#endif
462} ANFD; 1134} ANFD;
463 1135
1136/* stores the pending event set for a given watcher */
464typedef struct 1137typedef struct
465{ 1138{
466 W w; 1139 W w;
467 int events; 1140 int events; /* the pending event set for the given watcher */
468} ANPENDING; 1141} ANPENDING;
469 1142
470#if EV_USE_INOTIFY 1143#if EV_USE_INOTIFY
471/* hash table entry per inotify-id */ 1144/* hash table entry per inotify-id */
472typedef struct 1145typedef struct
… …
475} ANFS; 1148} ANFS;
476#endif 1149#endif
477 1150
478/* Heap Entry */ 1151/* Heap Entry */
479#if EV_HEAP_CACHE_AT 1152#if EV_HEAP_CACHE_AT
1153 /* a heap element */
480 typedef struct { 1154 typedef struct {
481 ev_tstamp at; 1155 ev_tstamp at;
482 WT w; 1156 WT w;
483 } ANHE; 1157 } ANHE;
484 1158
485 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1159 #define ANHE_w(he) (he).w /* access watcher, read-write */
486 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1160 #define ANHE_at(he) (he).at /* access cached at, read-only */
487 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 1161 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
488#else 1162#else
1163 /* a heap element */
489 typedef WT ANHE; 1164 typedef WT ANHE;
490 1165
491 #define ANHE_w(he) (he) 1166 #define ANHE_w(he) (he)
492 #define ANHE_at(he) (he)->at 1167 #define ANHE_at(he) (he)->at
493 #define ANHE_at_cache(he) 1168 #define ANHE_at_cache(he)
… …
517 1192
518 static int ev_default_loop_ptr; 1193 static int ev_default_loop_ptr;
519 1194
520#endif 1195#endif
521 1196
1197#if EV_FEATURE_API
1198# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1199# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1200# define EV_INVOKE_PENDING invoke_cb (EV_A)
1201#else
1202# define EV_RELEASE_CB (void)0
1203# define EV_ACQUIRE_CB (void)0
1204# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1205#endif
1206
1207#define EVBREAK_RECURSE 0x80
1208
522/*****************************************************************************/ 1209/*****************************************************************************/
523 1210
1211#ifndef EV_HAVE_EV_TIME
524ev_tstamp 1212ev_tstamp
525ev_time (void) 1213ev_time (void)
526{ 1214{
527#if EV_USE_REALTIME 1215#if EV_USE_REALTIME
1216 if (expect_true (have_realtime))
1217 {
528 struct timespec ts; 1218 struct timespec ts;
529 clock_gettime (CLOCK_REALTIME, &ts); 1219 clock_gettime (CLOCK_REALTIME, &ts);
530 return ts.tv_sec + ts.tv_nsec * 1e-9; 1220 return ts.tv_sec + ts.tv_nsec * 1e-9;
531#else 1221 }
1222#endif
1223
532 struct timeval tv; 1224 struct timeval tv;
533 gettimeofday (&tv, 0); 1225 gettimeofday (&tv, 0);
534 return tv.tv_sec + tv.tv_usec * 1e-6; 1226 return tv.tv_sec + tv.tv_usec * 1e-6;
535#endif
536} 1227}
1228#endif
537 1229
538ev_tstamp inline_size 1230inline_size ev_tstamp
539get_clock (void) 1231get_clock (void)
540{ 1232{
541#if EV_USE_MONOTONIC 1233#if EV_USE_MONOTONIC
542 if (expect_true (have_monotonic)) 1234 if (expect_true (have_monotonic))
543 { 1235 {
… …
564 if (delay > 0.) 1256 if (delay > 0.)
565 { 1257 {
566#if EV_USE_NANOSLEEP 1258#if EV_USE_NANOSLEEP
567 struct timespec ts; 1259 struct timespec ts;
568 1260
569 ts.tv_sec = (time_t)delay; 1261 EV_TS_SET (ts, delay);
570 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
571
572 nanosleep (&ts, 0); 1262 nanosleep (&ts, 0);
573#elif defined(_WIN32) 1263#elif defined(_WIN32)
574 Sleep ((unsigned long)(delay * 1e3)); 1264 Sleep ((unsigned long)(delay * 1e3));
575#else 1265#else
576 struct timeval tv; 1266 struct timeval tv;
577 1267
578 tv.tv_sec = (time_t)delay;
579 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
580
581 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1268 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
582 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1269 /* something not guaranteed by newer posix versions, but guaranteed */
583 /* by older ones */ 1270 /* by older ones */
1271 EV_TV_SET (tv, delay);
584 select (0, 0, 0, 0, &tv); 1272 select (0, 0, 0, 0, &tv);
585#endif 1273#endif
586 } 1274 }
587} 1275}
588 1276
589/*****************************************************************************/ 1277/*****************************************************************************/
590 1278
591#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1279#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
592 1280
593int inline_size 1281/* find a suitable new size for the given array, */
1282/* hopefully by rounding to a nice-to-malloc size */
1283inline_size int
594array_nextsize (int elem, int cur, int cnt) 1284array_nextsize (int elem, int cur, int cnt)
595{ 1285{
596 int ncur = cur + 1; 1286 int ncur = cur + 1;
597 1287
598 do 1288 do
… …
609 } 1299 }
610 1300
611 return ncur; 1301 return ncur;
612} 1302}
613 1303
614static noinline void * 1304static void * noinline ecb_cold
615array_realloc (int elem, void *base, int *cur, int cnt) 1305array_realloc (int elem, void *base, int *cur, int cnt)
616{ 1306{
617 *cur = array_nextsize (elem, *cur, cnt); 1307 *cur = array_nextsize (elem, *cur, cnt);
618 return ev_realloc (base, elem * *cur); 1308 return ev_realloc (base, elem * *cur);
619} 1309}
… …
622 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1312 memset ((void *)(base), 0, sizeof (*(base)) * (count))
623 1313
624#define array_needsize(type,base,cur,cnt,init) \ 1314#define array_needsize(type,base,cur,cnt,init) \
625 if (expect_false ((cnt) > (cur))) \ 1315 if (expect_false ((cnt) > (cur))) \
626 { \ 1316 { \
627 int ocur_ = (cur); \ 1317 int ecb_unused ocur_ = (cur); \
628 (base) = (type *)array_realloc \ 1318 (base) = (type *)array_realloc \
629 (sizeof (type), (base), &(cur), (cnt)); \ 1319 (sizeof (type), (base), &(cur), (cnt)); \
630 init ((base) + (ocur_), (cur) - ocur_); \ 1320 init ((base) + (ocur_), (cur) - ocur_); \
631 } 1321 }
632 1322
… …
639 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1329 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
640 } 1330 }
641#endif 1331#endif
642 1332
643#define array_free(stem, idx) \ 1333#define array_free(stem, idx) \
644 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1334 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
645 1335
646/*****************************************************************************/ 1336/*****************************************************************************/
1337
1338/* dummy callback for pending events */
1339static void noinline
1340pendingcb (EV_P_ ev_prepare *w, int revents)
1341{
1342}
647 1343
648void noinline 1344void noinline
649ev_feed_event (EV_P_ void *w, int revents) 1345ev_feed_event (EV_P_ void *w, int revents)
650{ 1346{
651 W w_ = (W)w; 1347 W w_ = (W)w;
… …
660 pendings [pri][w_->pending - 1].w = w_; 1356 pendings [pri][w_->pending - 1].w = w_;
661 pendings [pri][w_->pending - 1].events = revents; 1357 pendings [pri][w_->pending - 1].events = revents;
662 } 1358 }
663} 1359}
664 1360
665void inline_speed 1361inline_speed void
1362feed_reverse (EV_P_ W w)
1363{
1364 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1365 rfeeds [rfeedcnt++] = w;
1366}
1367
1368inline_size void
1369feed_reverse_done (EV_P_ int revents)
1370{
1371 do
1372 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1373 while (rfeedcnt);
1374}
1375
1376inline_speed void
666queue_events (EV_P_ W *events, int eventcnt, int type) 1377queue_events (EV_P_ W *events, int eventcnt, int type)
667{ 1378{
668 int i; 1379 int i;
669 1380
670 for (i = 0; i < eventcnt; ++i) 1381 for (i = 0; i < eventcnt; ++i)
671 ev_feed_event (EV_A_ events [i], type); 1382 ev_feed_event (EV_A_ events [i], type);
672} 1383}
673 1384
674/*****************************************************************************/ 1385/*****************************************************************************/
675 1386
676void inline_speed 1387inline_speed void
677fd_event (EV_P_ int fd, int revents) 1388fd_event_nocheck (EV_P_ int fd, int revents)
678{ 1389{
679 ANFD *anfd = anfds + fd; 1390 ANFD *anfd = anfds + fd;
680 ev_io *w; 1391 ev_io *w;
681 1392
682 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1393 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
686 if (ev) 1397 if (ev)
687 ev_feed_event (EV_A_ (W)w, ev); 1398 ev_feed_event (EV_A_ (W)w, ev);
688 } 1399 }
689} 1400}
690 1401
1402/* do not submit kernel events for fds that have reify set */
1403/* because that means they changed while we were polling for new events */
1404inline_speed void
1405fd_event (EV_P_ int fd, int revents)
1406{
1407 ANFD *anfd = anfds + fd;
1408
1409 if (expect_true (!anfd->reify))
1410 fd_event_nocheck (EV_A_ fd, revents);
1411}
1412
691void 1413void
692ev_feed_fd_event (EV_P_ int fd, int revents) 1414ev_feed_fd_event (EV_P_ int fd, int revents)
693{ 1415{
694 if (fd >= 0 && fd < anfdmax) 1416 if (fd >= 0 && fd < anfdmax)
695 fd_event (EV_A_ fd, revents); 1417 fd_event_nocheck (EV_A_ fd, revents);
696} 1418}
697 1419
698void inline_size 1420/* make sure the external fd watch events are in-sync */
1421/* with the kernel/libev internal state */
1422inline_size void
699fd_reify (EV_P) 1423fd_reify (EV_P)
700{ 1424{
701 int i; 1425 int i;
1426
1427#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1428 for (i = 0; i < fdchangecnt; ++i)
1429 {
1430 int fd = fdchanges [i];
1431 ANFD *anfd = anfds + fd;
1432
1433 if (anfd->reify & EV__IOFDSET && anfd->head)
1434 {
1435 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1436
1437 if (handle != anfd->handle)
1438 {
1439 unsigned long arg;
1440
1441 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1442
1443 /* handle changed, but fd didn't - we need to do it in two steps */
1444 backend_modify (EV_A_ fd, anfd->events, 0);
1445 anfd->events = 0;
1446 anfd->handle = handle;
1447 }
1448 }
1449 }
1450#endif
702 1451
703 for (i = 0; i < fdchangecnt; ++i) 1452 for (i = 0; i < fdchangecnt; ++i)
704 { 1453 {
705 int fd = fdchanges [i]; 1454 int fd = fdchanges [i];
706 ANFD *anfd = anfds + fd; 1455 ANFD *anfd = anfds + fd;
707 ev_io *w; 1456 ev_io *w;
708 1457
709 unsigned char events = 0; 1458 unsigned char o_events = anfd->events;
1459 unsigned char o_reify = anfd->reify;
710 1460
711 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1461 anfd->reify = 0;
712 events |= (unsigned char)w->events;
713 1462
714#if EV_SELECT_IS_WINSOCKET 1463 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
715 if (events)
716 { 1464 {
717 unsigned long arg; 1465 anfd->events = 0;
718 #ifdef EV_FD_TO_WIN32_HANDLE 1466
719 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1467 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
720 #else 1468 anfd->events |= (unsigned char)w->events;
721 anfd->handle = _get_osfhandle (fd); 1469
722 #endif 1470 if (o_events != anfd->events)
723 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1471 o_reify = EV__IOFDSET; /* actually |= */
724 } 1472 }
725#endif
726 1473
727 { 1474 if (o_reify & EV__IOFDSET)
728 unsigned char o_events = anfd->events;
729 unsigned char o_reify = anfd->reify;
730
731 anfd->reify = 0;
732 anfd->events = events;
733
734 if (o_events != events || o_reify & EV_IOFDSET)
735 backend_modify (EV_A_ fd, o_events, events); 1475 backend_modify (EV_A_ fd, o_events, anfd->events);
736 }
737 } 1476 }
738 1477
739 fdchangecnt = 0; 1478 fdchangecnt = 0;
740} 1479}
741 1480
742void inline_size 1481/* something about the given fd changed */
1482inline_size void
743fd_change (EV_P_ int fd, int flags) 1483fd_change (EV_P_ int fd, int flags)
744{ 1484{
745 unsigned char reify = anfds [fd].reify; 1485 unsigned char reify = anfds [fd].reify;
746 anfds [fd].reify |= flags; 1486 anfds [fd].reify |= flags;
747 1487
… …
751 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1491 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
752 fdchanges [fdchangecnt - 1] = fd; 1492 fdchanges [fdchangecnt - 1] = fd;
753 } 1493 }
754} 1494}
755 1495
756void inline_speed 1496/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1497inline_speed void ecb_cold
757fd_kill (EV_P_ int fd) 1498fd_kill (EV_P_ int fd)
758{ 1499{
759 ev_io *w; 1500 ev_io *w;
760 1501
761 while ((w = (ev_io *)anfds [fd].head)) 1502 while ((w = (ev_io *)anfds [fd].head))
… …
763 ev_io_stop (EV_A_ w); 1504 ev_io_stop (EV_A_ w);
764 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1505 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
765 } 1506 }
766} 1507}
767 1508
768int inline_size 1509/* check whether the given fd is actually valid, for error recovery */
1510inline_size int ecb_cold
769fd_valid (int fd) 1511fd_valid (int fd)
770{ 1512{
771#ifdef _WIN32 1513#ifdef _WIN32
772 return _get_osfhandle (fd) != -1; 1514 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
773#else 1515#else
774 return fcntl (fd, F_GETFD) != -1; 1516 return fcntl (fd, F_GETFD) != -1;
775#endif 1517#endif
776} 1518}
777 1519
778/* called on EBADF to verify fds */ 1520/* called on EBADF to verify fds */
779static void noinline 1521static void noinline ecb_cold
780fd_ebadf (EV_P) 1522fd_ebadf (EV_P)
781{ 1523{
782 int fd; 1524 int fd;
783 1525
784 for (fd = 0; fd < anfdmax; ++fd) 1526 for (fd = 0; fd < anfdmax; ++fd)
… …
786 if (!fd_valid (fd) && errno == EBADF) 1528 if (!fd_valid (fd) && errno == EBADF)
787 fd_kill (EV_A_ fd); 1529 fd_kill (EV_A_ fd);
788} 1530}
789 1531
790/* called on ENOMEM in select/poll to kill some fds and retry */ 1532/* called on ENOMEM in select/poll to kill some fds and retry */
791static void noinline 1533static void noinline ecb_cold
792fd_enomem (EV_P) 1534fd_enomem (EV_P)
793{ 1535{
794 int fd; 1536 int fd;
795 1537
796 for (fd = anfdmax; fd--; ) 1538 for (fd = anfdmax; fd--; )
797 if (anfds [fd].events) 1539 if (anfds [fd].events)
798 { 1540 {
799 fd_kill (EV_A_ fd); 1541 fd_kill (EV_A_ fd);
800 return; 1542 break;
801 } 1543 }
802} 1544}
803 1545
804/* usually called after fork if backend needs to re-arm all fds from scratch */ 1546/* usually called after fork if backend needs to re-arm all fds from scratch */
805static void noinline 1547static void noinline
… …
810 for (fd = 0; fd < anfdmax; ++fd) 1552 for (fd = 0; fd < anfdmax; ++fd)
811 if (anfds [fd].events) 1553 if (anfds [fd].events)
812 { 1554 {
813 anfds [fd].events = 0; 1555 anfds [fd].events = 0;
814 anfds [fd].emask = 0; 1556 anfds [fd].emask = 0;
815 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1557 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
816 } 1558 }
817} 1559}
818 1560
1561/* used to prepare libev internal fd's */
1562/* this is not fork-safe */
1563inline_speed void
1564fd_intern (int fd)
1565{
1566#ifdef _WIN32
1567 unsigned long arg = 1;
1568 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1569#else
1570 fcntl (fd, F_SETFD, FD_CLOEXEC);
1571 fcntl (fd, F_SETFL, O_NONBLOCK);
1572#endif
1573}
1574
819/*****************************************************************************/ 1575/*****************************************************************************/
820 1576
821/* 1577/*
822 * the heap functions want a real array index. array index 0 uis guaranteed to not 1578 * the heap functions want a real array index. array index 0 is guaranteed to not
823 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1579 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
824 * the branching factor of the d-tree. 1580 * the branching factor of the d-tree.
825 */ 1581 */
826 1582
827/* 1583/*
… …
836#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1592#define HEAP0 (DHEAP - 1) /* index of first element in heap */
837#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1593#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
838#define UPHEAP_DONE(p,k) ((p) == (k)) 1594#define UPHEAP_DONE(p,k) ((p) == (k))
839 1595
840/* away from the root */ 1596/* away from the root */
841void inline_speed 1597inline_speed void
842downheap (ANHE *heap, int N, int k) 1598downheap (ANHE *heap, int N, int k)
843{ 1599{
844 ANHE he = heap [k]; 1600 ANHE he = heap [k];
845 ANHE *E = heap + N + HEAP0; 1601 ANHE *E = heap + N + HEAP0;
846 1602
… …
886#define HEAP0 1 1642#define HEAP0 1
887#define HPARENT(k) ((k) >> 1) 1643#define HPARENT(k) ((k) >> 1)
888#define UPHEAP_DONE(p,k) (!(p)) 1644#define UPHEAP_DONE(p,k) (!(p))
889 1645
890/* away from the root */ 1646/* away from the root */
891void inline_speed 1647inline_speed void
892downheap (ANHE *heap, int N, int k) 1648downheap (ANHE *heap, int N, int k)
893{ 1649{
894 ANHE he = heap [k]; 1650 ANHE he = heap [k];
895 1651
896 for (;;) 1652 for (;;)
897 { 1653 {
898 int c = k << 1; 1654 int c = k << 1;
899 1655
900 if (c > N + HEAP0 - 1) 1656 if (c >= N + HEAP0)
901 break; 1657 break;
902 1658
903 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1659 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
904 ? 1 : 0; 1660 ? 1 : 0;
905 1661
… …
916 ev_active (ANHE_w (he)) = k; 1672 ev_active (ANHE_w (he)) = k;
917} 1673}
918#endif 1674#endif
919 1675
920/* towards the root */ 1676/* towards the root */
921void inline_speed 1677inline_speed void
922upheap (ANHE *heap, int k) 1678upheap (ANHE *heap, int k)
923{ 1679{
924 ANHE he = heap [k]; 1680 ANHE he = heap [k];
925 1681
926 for (;;) 1682 for (;;)
… …
937 1693
938 heap [k] = he; 1694 heap [k] = he;
939 ev_active (ANHE_w (he)) = k; 1695 ev_active (ANHE_w (he)) = k;
940} 1696}
941 1697
942void inline_size 1698/* move an element suitably so it is in a correct place */
1699inline_size void
943adjustheap (ANHE *heap, int N, int k) 1700adjustheap (ANHE *heap, int N, int k)
944{ 1701{
945 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1702 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
946 upheap (heap, k); 1703 upheap (heap, k);
947 else 1704 else
948 downheap (heap, N, k); 1705 downheap (heap, N, k);
949} 1706}
950 1707
951/* rebuild the heap: this function is used only once and executed rarely */ 1708/* rebuild the heap: this function is used only once and executed rarely */
952void inline_size 1709inline_size void
953reheap (ANHE *heap, int N) 1710reheap (ANHE *heap, int N)
954{ 1711{
955 int i; 1712 int i;
956 1713
957 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1714 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
960 upheap (heap, i + HEAP0); 1717 upheap (heap, i + HEAP0);
961} 1718}
962 1719
963/*****************************************************************************/ 1720/*****************************************************************************/
964 1721
1722/* associate signal watchers to a signal signal */
965typedef struct 1723typedef struct
966{ 1724{
1725 EV_ATOMIC_T pending;
1726#if EV_MULTIPLICITY
1727 EV_P;
1728#endif
967 WL head; 1729 WL head;
968 EV_ATOMIC_T gotsig;
969} ANSIG; 1730} ANSIG;
970 1731
971static ANSIG *signals; 1732static ANSIG signals [EV_NSIG - 1];
972static int signalmax;
973
974static EV_ATOMIC_T gotsig;
975 1733
976/*****************************************************************************/ 1734/*****************************************************************************/
977 1735
978void inline_speed 1736#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
979fd_intern (int fd)
980{
981#ifdef _WIN32
982 unsigned long arg = 1;
983 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
984#else
985 fcntl (fd, F_SETFD, FD_CLOEXEC);
986 fcntl (fd, F_SETFL, O_NONBLOCK);
987#endif
988}
989 1737
990static void noinline 1738static void noinline ecb_cold
991evpipe_init (EV_P) 1739evpipe_init (EV_P)
992{ 1740{
993 if (!ev_is_active (&pipeev)) 1741 if (!ev_is_active (&pipe_w))
994 { 1742 {
995#if EV_USE_EVENTFD 1743# if EV_USE_EVENTFD
1744 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1745 if (evfd < 0 && errno == EINVAL)
996 if ((evfd = eventfd (0, 0)) >= 0) 1746 evfd = eventfd (0, 0);
1747
1748 if (evfd >= 0)
997 { 1749 {
998 evpipe [0] = -1; 1750 evpipe [0] = -1;
999 fd_intern (evfd); 1751 fd_intern (evfd); /* doing it twice doesn't hurt */
1000 ev_io_set (&pipeev, evfd, EV_READ); 1752 ev_io_set (&pipe_w, evfd, EV_READ);
1001 } 1753 }
1002 else 1754 else
1003#endif 1755# endif
1004 { 1756 {
1005 while (pipe (evpipe)) 1757 while (pipe (evpipe))
1006 ev_syserr ("(libev) error creating signal/async pipe"); 1758 ev_syserr ("(libev) error creating signal/async pipe");
1007 1759
1008 fd_intern (evpipe [0]); 1760 fd_intern (evpipe [0]);
1009 fd_intern (evpipe [1]); 1761 fd_intern (evpipe [1]);
1010 ev_io_set (&pipeev, evpipe [0], EV_READ); 1762 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1011 } 1763 }
1012 1764
1013 ev_io_start (EV_A_ &pipeev); 1765 ev_io_start (EV_A_ &pipe_w);
1014 ev_unref (EV_A); /* watcher should not keep loop alive */ 1766 ev_unref (EV_A); /* watcher should not keep loop alive */
1015 } 1767 }
1016} 1768}
1017 1769
1018void inline_size 1770inline_speed void
1019evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1771evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1020{ 1772{
1021 if (!*flag) 1773 if (expect_true (*flag))
1774 return;
1775
1776 *flag = 1;
1777
1778 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1779
1780 pipe_write_skipped = 1;
1781
1782 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1783
1784 if (pipe_write_wanted)
1022 { 1785 {
1786 int old_errno;
1787
1788 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1789
1023 int old_errno = errno; /* save errno because write might clobber it */ 1790 old_errno = errno; /* save errno because write will clobber it */
1024
1025 *flag = 1;
1026 1791
1027#if EV_USE_EVENTFD 1792#if EV_USE_EVENTFD
1028 if (evfd >= 0) 1793 if (evfd >= 0)
1029 { 1794 {
1030 uint64_t counter = 1; 1795 uint64_t counter = 1;
1031 write (evfd, &counter, sizeof (uint64_t)); 1796 write (evfd, &counter, sizeof (uint64_t));
1032 } 1797 }
1033 else 1798 else
1034#endif 1799#endif
1800 {
1801 /* win32 people keep sending patches that change this write() to send() */
1802 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1803 /* so when you think this write should be a send instead, please find out */
1804 /* where your send() is from - it's definitely not the microsoft send, and */
1805 /* tell me. thank you. */
1035 write (evpipe [1], &old_errno, 1); 1806 write (evpipe [1], &(evpipe [1]), 1);
1807 }
1036 1808
1037 errno = old_errno; 1809 errno = old_errno;
1038 } 1810 }
1039} 1811}
1040 1812
1813/* called whenever the libev signal pipe */
1814/* got some events (signal, async) */
1041static void 1815static void
1042pipecb (EV_P_ ev_io *iow, int revents) 1816pipecb (EV_P_ ev_io *iow, int revents)
1043{ 1817{
1818 int i;
1819
1820 if (revents & EV_READ)
1821 {
1044#if EV_USE_EVENTFD 1822#if EV_USE_EVENTFD
1045 if (evfd >= 0) 1823 if (evfd >= 0)
1046 { 1824 {
1047 uint64_t counter; 1825 uint64_t counter;
1048 read (evfd, &counter, sizeof (uint64_t)); 1826 read (evfd, &counter, sizeof (uint64_t));
1049 } 1827 }
1050 else 1828 else
1051#endif 1829#endif
1052 { 1830 {
1053 char dummy; 1831 char dummy;
1832 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1054 read (evpipe [0], &dummy, 1); 1833 read (evpipe [0], &dummy, 1);
1834 }
1835 }
1836
1837 pipe_write_skipped = 0;
1838
1839#if EV_SIGNAL_ENABLE
1840 if (sig_pending)
1055 } 1841 {
1842 sig_pending = 0;
1056 1843
1057 if (gotsig && ev_is_default_loop (EV_A)) 1844 for (i = EV_NSIG - 1; i--; )
1058 { 1845 if (expect_false (signals [i].pending))
1059 int signum;
1060 gotsig = 0;
1061
1062 for (signum = signalmax; signum--; )
1063 if (signals [signum].gotsig)
1064 ev_feed_signal_event (EV_A_ signum + 1); 1846 ev_feed_signal_event (EV_A_ i + 1);
1065 } 1847 }
1848#endif
1066 1849
1067#if EV_ASYNC_ENABLE 1850#if EV_ASYNC_ENABLE
1068 if (gotasync) 1851 if (async_pending)
1069 { 1852 {
1070 int i; 1853 async_pending = 0;
1071 gotasync = 0;
1072 1854
1073 for (i = asynccnt; i--; ) 1855 for (i = asynccnt; i--; )
1074 if (asyncs [i]->sent) 1856 if (asyncs [i]->sent)
1075 { 1857 {
1076 asyncs [i]->sent = 0; 1858 asyncs [i]->sent = 0;
… …
1080#endif 1862#endif
1081} 1863}
1082 1864
1083/*****************************************************************************/ 1865/*****************************************************************************/
1084 1866
1867void
1868ev_feed_signal (int signum)
1869{
1870#if EV_MULTIPLICITY
1871 EV_P = signals [signum - 1].loop;
1872
1873 if (!EV_A)
1874 return;
1875#endif
1876
1877 if (!ev_active (&pipe_w))
1878 return;
1879
1880 signals [signum - 1].pending = 1;
1881 evpipe_write (EV_A_ &sig_pending);
1882}
1883
1085static void 1884static void
1086ev_sighandler (int signum) 1885ev_sighandler (int signum)
1087{ 1886{
1088#if EV_MULTIPLICITY
1089 struct ev_loop *loop = &default_loop_struct;
1090#endif
1091
1092#if _WIN32 1887#ifdef _WIN32
1093 signal (signum, ev_sighandler); 1888 signal (signum, ev_sighandler);
1094#endif 1889#endif
1095 1890
1096 signals [signum - 1].gotsig = 1; 1891 ev_feed_signal (signum);
1097 evpipe_write (EV_A_ &gotsig);
1098} 1892}
1099 1893
1100void noinline 1894void noinline
1101ev_feed_signal_event (EV_P_ int signum) 1895ev_feed_signal_event (EV_P_ int signum)
1102{ 1896{
1103 WL w; 1897 WL w;
1104 1898
1899 if (expect_false (signum <= 0 || signum > EV_NSIG))
1900 return;
1901
1902 --signum;
1903
1105#if EV_MULTIPLICITY 1904#if EV_MULTIPLICITY
1106 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1905 /* it is permissible to try to feed a signal to the wrong loop */
1107#endif 1906 /* or, likely more useful, feeding a signal nobody is waiting for */
1108 1907
1109 --signum; 1908 if (expect_false (signals [signum].loop != EV_A))
1110
1111 if (signum < 0 || signum >= signalmax)
1112 return; 1909 return;
1910#endif
1113 1911
1114 signals [signum].gotsig = 0; 1912 signals [signum].pending = 0;
1115 1913
1116 for (w = signals [signum].head; w; w = w->next) 1914 for (w = signals [signum].head; w; w = w->next)
1117 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1915 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1118} 1916}
1119 1917
1918#if EV_USE_SIGNALFD
1919static void
1920sigfdcb (EV_P_ ev_io *iow, int revents)
1921{
1922 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1923
1924 for (;;)
1925 {
1926 ssize_t res = read (sigfd, si, sizeof (si));
1927
1928 /* not ISO-C, as res might be -1, but works with SuS */
1929 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1930 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1931
1932 if (res < (ssize_t)sizeof (si))
1933 break;
1934 }
1935}
1936#endif
1937
1938#endif
1939
1120/*****************************************************************************/ 1940/*****************************************************************************/
1121 1941
1942#if EV_CHILD_ENABLE
1122static WL childs [EV_PID_HASHSIZE]; 1943static WL childs [EV_PID_HASHSIZE];
1123
1124#ifndef _WIN32
1125 1944
1126static ev_signal childev; 1945static ev_signal childev;
1127 1946
1128#ifndef WIFCONTINUED 1947#ifndef WIFCONTINUED
1129# define WIFCONTINUED(status) 0 1948# define WIFCONTINUED(status) 0
1130#endif 1949#endif
1131 1950
1132void inline_speed 1951/* handle a single child status event */
1952inline_speed void
1133child_reap (EV_P_ int chain, int pid, int status) 1953child_reap (EV_P_ int chain, int pid, int status)
1134{ 1954{
1135 ev_child *w; 1955 ev_child *w;
1136 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1956 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1137 1957
1138 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1958 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1139 { 1959 {
1140 if ((w->pid == pid || !w->pid) 1960 if ((w->pid == pid || !w->pid)
1141 && (!traced || (w->flags & 1))) 1961 && (!traced || (w->flags & 1)))
1142 { 1962 {
1143 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1963 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1150 1970
1151#ifndef WCONTINUED 1971#ifndef WCONTINUED
1152# define WCONTINUED 0 1972# define WCONTINUED 0
1153#endif 1973#endif
1154 1974
1975/* called on sigchld etc., calls waitpid */
1155static void 1976static void
1156childcb (EV_P_ ev_signal *sw, int revents) 1977childcb (EV_P_ ev_signal *sw, int revents)
1157{ 1978{
1158 int pid, status; 1979 int pid, status;
1159 1980
… …
1167 /* make sure we are called again until all children have been reaped */ 1988 /* make sure we are called again until all children have been reaped */
1168 /* we need to do it this way so that the callback gets called before we continue */ 1989 /* we need to do it this way so that the callback gets called before we continue */
1169 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1990 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1170 1991
1171 child_reap (EV_A_ pid, pid, status); 1992 child_reap (EV_A_ pid, pid, status);
1172 if (EV_PID_HASHSIZE > 1) 1993 if ((EV_PID_HASHSIZE) > 1)
1173 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1994 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1174} 1995}
1175 1996
1176#endif 1997#endif
1177 1998
1178/*****************************************************************************/ 1999/*****************************************************************************/
1179 2000
2001#if EV_USE_IOCP
2002# include "ev_iocp.c"
2003#endif
1180#if EV_USE_PORT 2004#if EV_USE_PORT
1181# include "ev_port.c" 2005# include "ev_port.c"
1182#endif 2006#endif
1183#if EV_USE_KQUEUE 2007#if EV_USE_KQUEUE
1184# include "ev_kqueue.c" 2008# include "ev_kqueue.c"
… …
1191#endif 2015#endif
1192#if EV_USE_SELECT 2016#if EV_USE_SELECT
1193# include "ev_select.c" 2017# include "ev_select.c"
1194#endif 2018#endif
1195 2019
1196int 2020int ecb_cold
1197ev_version_major (void) 2021ev_version_major (void)
1198{ 2022{
1199 return EV_VERSION_MAJOR; 2023 return EV_VERSION_MAJOR;
1200} 2024}
1201 2025
1202int 2026int ecb_cold
1203ev_version_minor (void) 2027ev_version_minor (void)
1204{ 2028{
1205 return EV_VERSION_MINOR; 2029 return EV_VERSION_MINOR;
1206} 2030}
1207 2031
1208/* return true if we are running with elevated privileges and should ignore env variables */ 2032/* return true if we are running with elevated privileges and should ignore env variables */
1209int inline_size 2033int inline_size ecb_cold
1210enable_secure (void) 2034enable_secure (void)
1211{ 2035{
1212#ifdef _WIN32 2036#ifdef _WIN32
1213 return 0; 2037 return 0;
1214#else 2038#else
1215 return getuid () != geteuid () 2039 return getuid () != geteuid ()
1216 || getgid () != getegid (); 2040 || getgid () != getegid ();
1217#endif 2041#endif
1218} 2042}
1219 2043
1220unsigned int 2044unsigned int ecb_cold
1221ev_supported_backends (void) 2045ev_supported_backends (void)
1222{ 2046{
1223 unsigned int flags = 0; 2047 unsigned int flags = 0;
1224 2048
1225 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2049 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1229 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2053 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1230 2054
1231 return flags; 2055 return flags;
1232} 2056}
1233 2057
1234unsigned int 2058unsigned int ecb_cold
1235ev_recommended_backends (void) 2059ev_recommended_backends (void)
1236{ 2060{
1237 unsigned int flags = ev_supported_backends (); 2061 unsigned int flags = ev_supported_backends ();
1238 2062
1239#ifndef __NetBSD__ 2063#ifndef __NetBSD__
1240 /* kqueue is borked on everything but netbsd apparently */ 2064 /* kqueue is borked on everything but netbsd apparently */
1241 /* it usually doesn't work correctly on anything but sockets and pipes */ 2065 /* it usually doesn't work correctly on anything but sockets and pipes */
1242 flags &= ~EVBACKEND_KQUEUE; 2066 flags &= ~EVBACKEND_KQUEUE;
1243#endif 2067#endif
1244#ifdef __APPLE__ 2068#ifdef __APPLE__
1245 // flags &= ~EVBACKEND_KQUEUE; for documentation 2069 /* only select works correctly on that "unix-certified" platform */
1246 flags &= ~EVBACKEND_POLL; 2070 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
2071 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
2072#endif
2073#ifdef __FreeBSD__
2074 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1247#endif 2075#endif
1248 2076
1249 return flags; 2077 return flags;
1250} 2078}
1251 2079
1252unsigned int 2080unsigned int ecb_cold
1253ev_embeddable_backends (void) 2081ev_embeddable_backends (void)
1254{ 2082{
1255 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2083 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1256 2084
1257 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2085 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1258 /* please fix it and tell me how to detect the fix */ 2086 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1259 flags &= ~EVBACKEND_EPOLL; 2087 flags &= ~EVBACKEND_EPOLL;
1260 2088
1261 return flags; 2089 return flags;
1262} 2090}
1263 2091
1264unsigned int 2092unsigned int
1265ev_backend (EV_P) 2093ev_backend (EV_P)
1266{ 2094{
1267 return backend; 2095 return backend;
1268} 2096}
1269 2097
2098#if EV_FEATURE_API
1270unsigned int 2099unsigned int
1271ev_loop_count (EV_P) 2100ev_iteration (EV_P)
1272{ 2101{
1273 return loop_count; 2102 return loop_count;
2103}
2104
2105unsigned int
2106ev_depth (EV_P)
2107{
2108 return loop_depth;
1274} 2109}
1275 2110
1276void 2111void
1277ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2112ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1278{ 2113{
… …
1283ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2118ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1284{ 2119{
1285 timeout_blocktime = interval; 2120 timeout_blocktime = interval;
1286} 2121}
1287 2122
2123void
2124ev_set_userdata (EV_P_ void *data)
2125{
2126 userdata = data;
2127}
2128
2129void *
2130ev_userdata (EV_P)
2131{
2132 return userdata;
2133}
2134
2135void
2136ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
2137{
2138 invoke_cb = invoke_pending_cb;
2139}
2140
2141void
2142ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
2143{
2144 release_cb = release;
2145 acquire_cb = acquire;
2146}
2147#endif
2148
2149/* initialise a loop structure, must be zero-initialised */
1288static void noinline 2150static void noinline ecb_cold
1289loop_init (EV_P_ unsigned int flags) 2151loop_init (EV_P_ unsigned int flags)
1290{ 2152{
1291 if (!backend) 2153 if (!backend)
1292 { 2154 {
2155 origflags = flags;
2156
2157#if EV_USE_REALTIME
2158 if (!have_realtime)
2159 {
2160 struct timespec ts;
2161
2162 if (!clock_gettime (CLOCK_REALTIME, &ts))
2163 have_realtime = 1;
2164 }
2165#endif
2166
1293#if EV_USE_MONOTONIC 2167#if EV_USE_MONOTONIC
2168 if (!have_monotonic)
1294 { 2169 {
1295 struct timespec ts; 2170 struct timespec ts;
2171
1296 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2172 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1297 have_monotonic = 1; 2173 have_monotonic = 1;
1298 } 2174 }
1299#endif
1300
1301 ev_rt_now = ev_time ();
1302 mn_now = get_clock ();
1303 now_floor = mn_now;
1304 rtmn_diff = ev_rt_now - mn_now;
1305
1306 io_blocktime = 0.;
1307 timeout_blocktime = 0.;
1308 backend = 0;
1309 backend_fd = -1;
1310 gotasync = 0;
1311#if EV_USE_INOTIFY
1312 fs_fd = -2;
1313#endif 2175#endif
1314 2176
1315 /* pid check not overridable via env */ 2177 /* pid check not overridable via env */
1316#ifndef _WIN32 2178#ifndef _WIN32
1317 if (flags & EVFLAG_FORKCHECK) 2179 if (flags & EVFLAG_FORKCHECK)
… …
1321 if (!(flags & EVFLAG_NOENV) 2183 if (!(flags & EVFLAG_NOENV)
1322 && !enable_secure () 2184 && !enable_secure ()
1323 && getenv ("LIBEV_FLAGS")) 2185 && getenv ("LIBEV_FLAGS"))
1324 flags = atoi (getenv ("LIBEV_FLAGS")); 2186 flags = atoi (getenv ("LIBEV_FLAGS"));
1325 2187
1326 if (!(flags & 0x0000ffffU)) 2188 ev_rt_now = ev_time ();
2189 mn_now = get_clock ();
2190 now_floor = mn_now;
2191 rtmn_diff = ev_rt_now - mn_now;
2192#if EV_FEATURE_API
2193 invoke_cb = ev_invoke_pending;
2194#endif
2195
2196 io_blocktime = 0.;
2197 timeout_blocktime = 0.;
2198 backend = 0;
2199 backend_fd = -1;
2200 sig_pending = 0;
2201#if EV_ASYNC_ENABLE
2202 async_pending = 0;
2203#endif
2204 pipe_write_skipped = 0;
2205 pipe_write_wanted = 0;
2206#if EV_USE_INOTIFY
2207 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2208#endif
2209#if EV_USE_SIGNALFD
2210 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2211#endif
2212
2213 if (!(flags & EVBACKEND_MASK))
1327 flags |= ev_recommended_backends (); 2214 flags |= ev_recommended_backends ();
1328 2215
2216#if EV_USE_IOCP
2217 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2218#endif
1329#if EV_USE_PORT 2219#if EV_USE_PORT
1330 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2220 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1331#endif 2221#endif
1332#if EV_USE_KQUEUE 2222#if EV_USE_KQUEUE
1333 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2223 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1340#endif 2230#endif
1341#if EV_USE_SELECT 2231#if EV_USE_SELECT
1342 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2232 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1343#endif 2233#endif
1344 2234
2235 ev_prepare_init (&pending_w, pendingcb);
2236
2237#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1345 ev_init (&pipeev, pipecb); 2238 ev_init (&pipe_w, pipecb);
1346 ev_set_priority (&pipeev, EV_MAXPRI); 2239 ev_set_priority (&pipe_w, EV_MAXPRI);
2240#endif
1347 } 2241 }
1348} 2242}
1349 2243
1350static void noinline 2244/* free up a loop structure */
2245void ecb_cold
1351loop_destroy (EV_P) 2246ev_loop_destroy (EV_P)
1352{ 2247{
1353 int i; 2248 int i;
1354 2249
2250#if EV_MULTIPLICITY
2251 /* mimic free (0) */
2252 if (!EV_A)
2253 return;
2254#endif
2255
2256#if EV_CLEANUP_ENABLE
2257 /* queue cleanup watchers (and execute them) */
2258 if (expect_false (cleanupcnt))
2259 {
2260 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2261 EV_INVOKE_PENDING;
2262 }
2263#endif
2264
2265#if EV_CHILD_ENABLE
2266 if (ev_is_active (&childev))
2267 {
2268 ev_ref (EV_A); /* child watcher */
2269 ev_signal_stop (EV_A_ &childev);
2270 }
2271#endif
2272
1355 if (ev_is_active (&pipeev)) 2273 if (ev_is_active (&pipe_w))
1356 { 2274 {
1357 ev_ref (EV_A); /* signal watcher */ 2275 /*ev_ref (EV_A);*/
1358 ev_io_stop (EV_A_ &pipeev); 2276 /*ev_io_stop (EV_A_ &pipe_w);*/
1359 2277
1360#if EV_USE_EVENTFD 2278#if EV_USE_EVENTFD
1361 if (evfd >= 0) 2279 if (evfd >= 0)
1362 close (evfd); 2280 close (evfd);
1363#endif 2281#endif
1364 2282
1365 if (evpipe [0] >= 0) 2283 if (evpipe [0] >= 0)
1366 { 2284 {
1367 close (evpipe [0]); 2285 EV_WIN32_CLOSE_FD (evpipe [0]);
1368 close (evpipe [1]); 2286 EV_WIN32_CLOSE_FD (evpipe [1]);
1369 } 2287 }
1370 } 2288 }
2289
2290#if EV_USE_SIGNALFD
2291 if (ev_is_active (&sigfd_w))
2292 close (sigfd);
2293#endif
1371 2294
1372#if EV_USE_INOTIFY 2295#if EV_USE_INOTIFY
1373 if (fs_fd >= 0) 2296 if (fs_fd >= 0)
1374 close (fs_fd); 2297 close (fs_fd);
1375#endif 2298#endif
1376 2299
1377 if (backend_fd >= 0) 2300 if (backend_fd >= 0)
1378 close (backend_fd); 2301 close (backend_fd);
1379 2302
2303#if EV_USE_IOCP
2304 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2305#endif
1380#if EV_USE_PORT 2306#if EV_USE_PORT
1381 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2307 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1382#endif 2308#endif
1383#if EV_USE_KQUEUE 2309#if EV_USE_KQUEUE
1384 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2310 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1399#if EV_IDLE_ENABLE 2325#if EV_IDLE_ENABLE
1400 array_free (idle, [i]); 2326 array_free (idle, [i]);
1401#endif 2327#endif
1402 } 2328 }
1403 2329
1404 ev_free (anfds); anfdmax = 0; 2330 ev_free (anfds); anfds = 0; anfdmax = 0;
1405 2331
1406 /* have to use the microsoft-never-gets-it-right macro */ 2332 /* have to use the microsoft-never-gets-it-right macro */
2333 array_free (rfeed, EMPTY);
1407 array_free (fdchange, EMPTY); 2334 array_free (fdchange, EMPTY);
1408 array_free (timer, EMPTY); 2335 array_free (timer, EMPTY);
1409#if EV_PERIODIC_ENABLE 2336#if EV_PERIODIC_ENABLE
1410 array_free (periodic, EMPTY); 2337 array_free (periodic, EMPTY);
1411#endif 2338#endif
1412#if EV_FORK_ENABLE 2339#if EV_FORK_ENABLE
1413 array_free (fork, EMPTY); 2340 array_free (fork, EMPTY);
1414#endif 2341#endif
2342#if EV_CLEANUP_ENABLE
2343 array_free (cleanup, EMPTY);
2344#endif
1415 array_free (prepare, EMPTY); 2345 array_free (prepare, EMPTY);
1416 array_free (check, EMPTY); 2346 array_free (check, EMPTY);
1417#if EV_ASYNC_ENABLE 2347#if EV_ASYNC_ENABLE
1418 array_free (async, EMPTY); 2348 array_free (async, EMPTY);
1419#endif 2349#endif
1420 2350
1421 backend = 0; 2351 backend = 0;
2352
2353#if EV_MULTIPLICITY
2354 if (ev_is_default_loop (EV_A))
2355#endif
2356 ev_default_loop_ptr = 0;
2357#if EV_MULTIPLICITY
2358 else
2359 ev_free (EV_A);
2360#endif
1422} 2361}
1423 2362
1424#if EV_USE_INOTIFY 2363#if EV_USE_INOTIFY
1425void inline_size infy_fork (EV_P); 2364inline_size void infy_fork (EV_P);
1426#endif 2365#endif
1427 2366
1428void inline_size 2367inline_size void
1429loop_fork (EV_P) 2368loop_fork (EV_P)
1430{ 2369{
1431#if EV_USE_PORT 2370#if EV_USE_PORT
1432 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2371 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1433#endif 2372#endif
… …
1439#endif 2378#endif
1440#if EV_USE_INOTIFY 2379#if EV_USE_INOTIFY
1441 infy_fork (EV_A); 2380 infy_fork (EV_A);
1442#endif 2381#endif
1443 2382
1444 if (ev_is_active (&pipeev)) 2383 if (ev_is_active (&pipe_w))
1445 { 2384 {
1446 /* this "locks" the handlers against writing to the pipe */ 2385 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1447 /* while we modify the fd vars */
1448 gotsig = 1;
1449#if EV_ASYNC_ENABLE
1450 gotasync = 1;
1451#endif
1452 2386
1453 ev_ref (EV_A); 2387 ev_ref (EV_A);
1454 ev_io_stop (EV_A_ &pipeev); 2388 ev_io_stop (EV_A_ &pipe_w);
1455 2389
1456#if EV_USE_EVENTFD 2390#if EV_USE_EVENTFD
1457 if (evfd >= 0) 2391 if (evfd >= 0)
1458 close (evfd); 2392 close (evfd);
1459#endif 2393#endif
1460 2394
1461 if (evpipe [0] >= 0) 2395 if (evpipe [0] >= 0)
1462 { 2396 {
1463 close (evpipe [0]); 2397 EV_WIN32_CLOSE_FD (evpipe [0]);
1464 close (evpipe [1]); 2398 EV_WIN32_CLOSE_FD (evpipe [1]);
1465 } 2399 }
1466 2400
2401#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1467 evpipe_init (EV_A); 2402 evpipe_init (EV_A);
1468 /* now iterate over everything, in case we missed something */ 2403 /* now iterate over everything, in case we missed something */
1469 pipecb (EV_A_ &pipeev, EV_READ); 2404 pipecb (EV_A_ &pipe_w, EV_READ);
2405#endif
1470 } 2406 }
1471 2407
1472 postfork = 0; 2408 postfork = 0;
1473} 2409}
1474 2410
1475#if EV_MULTIPLICITY 2411#if EV_MULTIPLICITY
1476 2412
1477struct ev_loop * 2413struct ev_loop * ecb_cold
1478ev_loop_new (unsigned int flags) 2414ev_loop_new (unsigned int flags)
1479{ 2415{
1480 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2416 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1481 2417
1482 memset (loop, 0, sizeof (struct ev_loop)); 2418 memset (EV_A, 0, sizeof (struct ev_loop));
1483
1484 loop_init (EV_A_ flags); 2419 loop_init (EV_A_ flags);
1485 2420
1486 if (ev_backend (EV_A)) 2421 if (ev_backend (EV_A))
1487 return loop; 2422 return EV_A;
1488 2423
2424 ev_free (EV_A);
1489 return 0; 2425 return 0;
1490} 2426}
1491 2427
1492void 2428#endif /* multiplicity */
1493ev_loop_destroy (EV_P)
1494{
1495 loop_destroy (EV_A);
1496 ev_free (loop);
1497}
1498
1499void
1500ev_loop_fork (EV_P)
1501{
1502 postfork = 1; /* must be in line with ev_default_fork */
1503}
1504 2429
1505#if EV_VERIFY 2430#if EV_VERIFY
1506static void noinline 2431static void noinline ecb_cold
1507verify_watcher (EV_P_ W w) 2432verify_watcher (EV_P_ W w)
1508{ 2433{
1509 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2434 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1510 2435
1511 if (w->pending) 2436 if (w->pending)
1512 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2437 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1513} 2438}
1514 2439
1515static void noinline 2440static void noinline ecb_cold
1516verify_heap (EV_P_ ANHE *heap, int N) 2441verify_heap (EV_P_ ANHE *heap, int N)
1517{ 2442{
1518 int i; 2443 int i;
1519 2444
1520 for (i = HEAP0; i < N + HEAP0; ++i) 2445 for (i = HEAP0; i < N + HEAP0; ++i)
1521 { 2446 {
1522 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 2447 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1523 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 2448 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1524 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 2449 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1525 2450
1526 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2451 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1527 } 2452 }
1528} 2453}
1529 2454
1530static void noinline 2455static void noinline ecb_cold
1531array_verify (EV_P_ W *ws, int cnt) 2456array_verify (EV_P_ W *ws, int cnt)
1532{ 2457{
1533 while (cnt--) 2458 while (cnt--)
1534 { 2459 {
1535 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2460 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1536 verify_watcher (EV_A_ ws [cnt]); 2461 verify_watcher (EV_A_ ws [cnt]);
1537 } 2462 }
1538} 2463}
1539#endif 2464#endif
1540 2465
1541void 2466#if EV_FEATURE_API
2467void ecb_cold
1542ev_loop_verify (EV_P) 2468ev_verify (EV_P)
1543{ 2469{
1544#if EV_VERIFY 2470#if EV_VERIFY
1545 int i; 2471 int i;
1546 WL w; 2472 WL w;
1547 2473
1548 assert (activecnt >= -1); 2474 assert (activecnt >= -1);
1549 2475
1550 assert (fdchangemax >= fdchangecnt); 2476 assert (fdchangemax >= fdchangecnt);
1551 for (i = 0; i < fdchangecnt; ++i) 2477 for (i = 0; i < fdchangecnt; ++i)
1552 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 2478 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1553 2479
1554 assert (anfdmax >= 0); 2480 assert (anfdmax >= 0);
1555 for (i = 0; i < anfdmax; ++i) 2481 for (i = 0; i < anfdmax; ++i)
1556 for (w = anfds [i].head; w; w = w->next) 2482 for (w = anfds [i].head; w; w = w->next)
1557 { 2483 {
1558 verify_watcher (EV_A_ (W)w); 2484 verify_watcher (EV_A_ (W)w);
1559 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 2485 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1560 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2486 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1561 } 2487 }
1562 2488
1563 assert (timermax >= timercnt); 2489 assert (timermax >= timercnt);
1564 verify_heap (EV_A_ timers, timercnt); 2490 verify_heap (EV_A_ timers, timercnt);
1565 2491
… …
1581#if EV_FORK_ENABLE 2507#if EV_FORK_ENABLE
1582 assert (forkmax >= forkcnt); 2508 assert (forkmax >= forkcnt);
1583 array_verify (EV_A_ (W *)forks, forkcnt); 2509 array_verify (EV_A_ (W *)forks, forkcnt);
1584#endif 2510#endif
1585 2511
2512#if EV_CLEANUP_ENABLE
2513 assert (cleanupmax >= cleanupcnt);
2514 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2515#endif
2516
1586#if EV_ASYNC_ENABLE 2517#if EV_ASYNC_ENABLE
1587 assert (asyncmax >= asynccnt); 2518 assert (asyncmax >= asynccnt);
1588 array_verify (EV_A_ (W *)asyncs, asynccnt); 2519 array_verify (EV_A_ (W *)asyncs, asynccnt);
1589#endif 2520#endif
1590 2521
2522#if EV_PREPARE_ENABLE
1591 assert (preparemax >= preparecnt); 2523 assert (preparemax >= preparecnt);
1592 array_verify (EV_A_ (W *)prepares, preparecnt); 2524 array_verify (EV_A_ (W *)prepares, preparecnt);
2525#endif
1593 2526
2527#if EV_CHECK_ENABLE
1594 assert (checkmax >= checkcnt); 2528 assert (checkmax >= checkcnt);
1595 array_verify (EV_A_ (W *)checks, checkcnt); 2529 array_verify (EV_A_ (W *)checks, checkcnt);
2530#endif
1596 2531
1597# if 0 2532# if 0
2533#if EV_CHILD_ENABLE
1598 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2534 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1599 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2535 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2536#endif
1600# endif 2537# endif
1601#endif 2538#endif
1602} 2539}
1603 2540#endif
1604#endif /* multiplicity */
1605 2541
1606#if EV_MULTIPLICITY 2542#if EV_MULTIPLICITY
1607struct ev_loop * 2543struct ev_loop * ecb_cold
1608ev_default_loop_init (unsigned int flags)
1609#else 2544#else
1610int 2545int
2546#endif
1611ev_default_loop (unsigned int flags) 2547ev_default_loop (unsigned int flags)
1612#endif
1613{ 2548{
1614 if (!ev_default_loop_ptr) 2549 if (!ev_default_loop_ptr)
1615 { 2550 {
1616#if EV_MULTIPLICITY 2551#if EV_MULTIPLICITY
1617 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2552 EV_P = ev_default_loop_ptr = &default_loop_struct;
1618#else 2553#else
1619 ev_default_loop_ptr = 1; 2554 ev_default_loop_ptr = 1;
1620#endif 2555#endif
1621 2556
1622 loop_init (EV_A_ flags); 2557 loop_init (EV_A_ flags);
1623 2558
1624 if (ev_backend (EV_A)) 2559 if (ev_backend (EV_A))
1625 { 2560 {
1626#ifndef _WIN32 2561#if EV_CHILD_ENABLE
1627 ev_signal_init (&childev, childcb, SIGCHLD); 2562 ev_signal_init (&childev, childcb, SIGCHLD);
1628 ev_set_priority (&childev, EV_MAXPRI); 2563 ev_set_priority (&childev, EV_MAXPRI);
1629 ev_signal_start (EV_A_ &childev); 2564 ev_signal_start (EV_A_ &childev);
1630 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2565 ev_unref (EV_A); /* child watcher should not keep loop alive */
1631#endif 2566#endif
… …
1636 2571
1637 return ev_default_loop_ptr; 2572 return ev_default_loop_ptr;
1638} 2573}
1639 2574
1640void 2575void
1641ev_default_destroy (void) 2576ev_loop_fork (EV_P)
1642{ 2577{
1643#if EV_MULTIPLICITY
1644 struct ev_loop *loop = ev_default_loop_ptr;
1645#endif
1646
1647 ev_default_loop_ptr = 0;
1648
1649#ifndef _WIN32
1650 ev_ref (EV_A); /* child watcher */
1651 ev_signal_stop (EV_A_ &childev);
1652#endif
1653
1654 loop_destroy (EV_A);
1655}
1656
1657void
1658ev_default_fork (void)
1659{
1660#if EV_MULTIPLICITY
1661 struct ev_loop *loop = ev_default_loop_ptr;
1662#endif
1663
1664 postfork = 1; /* must be in line with ev_loop_fork */ 2578 postfork = 1; /* must be in line with ev_default_fork */
1665} 2579}
1666 2580
1667/*****************************************************************************/ 2581/*****************************************************************************/
1668 2582
1669void 2583void
1670ev_invoke (EV_P_ void *w, int revents) 2584ev_invoke (EV_P_ void *w, int revents)
1671{ 2585{
1672 EV_CB_INVOKE ((W)w, revents); 2586 EV_CB_INVOKE ((W)w, revents);
1673} 2587}
1674 2588
1675void inline_speed 2589unsigned int
1676call_pending (EV_P) 2590ev_pending_count (EV_P)
2591{
2592 int pri;
2593 unsigned int count = 0;
2594
2595 for (pri = NUMPRI; pri--; )
2596 count += pendingcnt [pri];
2597
2598 return count;
2599}
2600
2601void noinline
2602ev_invoke_pending (EV_P)
1677{ 2603{
1678 int pri; 2604 int pri;
1679 2605
1680 for (pri = NUMPRI; pri--; ) 2606 for (pri = NUMPRI; pri--; )
1681 while (pendingcnt [pri]) 2607 while (pendingcnt [pri])
1682 { 2608 {
1683 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2609 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1684 2610
1685 if (expect_true (p->w))
1686 {
1687 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1688
1689 p->w->pending = 0; 2611 p->w->pending = 0;
1690 EV_CB_INVOKE (p->w, p->events); 2612 EV_CB_INVOKE (p->w, p->events);
1691 EV_FREQUENT_CHECK; 2613 EV_FREQUENT_CHECK;
1692 }
1693 } 2614 }
1694} 2615}
1695 2616
1696#if EV_IDLE_ENABLE 2617#if EV_IDLE_ENABLE
1697void inline_size 2618/* make idle watchers pending. this handles the "call-idle */
2619/* only when higher priorities are idle" logic */
2620inline_size void
1698idle_reify (EV_P) 2621idle_reify (EV_P)
1699{ 2622{
1700 if (expect_false (idleall)) 2623 if (expect_false (idleall))
1701 { 2624 {
1702 int pri; 2625 int pri;
… …
1714 } 2637 }
1715 } 2638 }
1716} 2639}
1717#endif 2640#endif
1718 2641
1719void inline_size 2642/* make timers pending */
2643inline_size void
1720timers_reify (EV_P) 2644timers_reify (EV_P)
1721{ 2645{
1722 EV_FREQUENT_CHECK; 2646 EV_FREQUENT_CHECK;
1723 2647
1724 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2648 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1725 { 2649 {
1726 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2650 do
1727
1728 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1729
1730 /* first reschedule or stop timer */
1731 if (w->repeat)
1732 { 2651 {
2652 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2653
2654 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2655
2656 /* first reschedule or stop timer */
2657 if (w->repeat)
2658 {
1733 ev_at (w) += w->repeat; 2659 ev_at (w) += w->repeat;
1734 if (ev_at (w) < mn_now) 2660 if (ev_at (w) < mn_now)
1735 ev_at (w) = mn_now; 2661 ev_at (w) = mn_now;
1736 2662
1737 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2663 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1738 2664
1739 ANHE_at_cache (timers [HEAP0]); 2665 ANHE_at_cache (timers [HEAP0]);
1740 downheap (timers, timercnt, HEAP0); 2666 downheap (timers, timercnt, HEAP0);
2667 }
2668 else
2669 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2670
2671 EV_FREQUENT_CHECK;
2672 feed_reverse (EV_A_ (W)w);
1741 } 2673 }
1742 else 2674 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1743 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1744 2675
1745 EV_FREQUENT_CHECK; 2676 feed_reverse_done (EV_A_ EV_TIMER);
1746 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1747 } 2677 }
1748} 2678}
1749 2679
1750#if EV_PERIODIC_ENABLE 2680#if EV_PERIODIC_ENABLE
1751void inline_size 2681
2682static void noinline
2683periodic_recalc (EV_P_ ev_periodic *w)
2684{
2685 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2686 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2687
2688 /* the above almost always errs on the low side */
2689 while (at <= ev_rt_now)
2690 {
2691 ev_tstamp nat = at + w->interval;
2692
2693 /* when resolution fails us, we use ev_rt_now */
2694 if (expect_false (nat == at))
2695 {
2696 at = ev_rt_now;
2697 break;
2698 }
2699
2700 at = nat;
2701 }
2702
2703 ev_at (w) = at;
2704}
2705
2706/* make periodics pending */
2707inline_size void
1752periodics_reify (EV_P) 2708periodics_reify (EV_P)
1753{ 2709{
1754 EV_FREQUENT_CHECK; 2710 EV_FREQUENT_CHECK;
1755 2711
1756 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2712 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1757 { 2713 {
1758 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2714 int feed_count = 0;
1759 2715
1760 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2716 do
1761
1762 /* first reschedule or stop timer */
1763 if (w->reschedule_cb)
1764 { 2717 {
2718 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2719
2720 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2721
2722 /* first reschedule or stop timer */
2723 if (w->reschedule_cb)
2724 {
1765 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2725 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1766 2726
1767 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2727 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1768 2728
1769 ANHE_at_cache (periodics [HEAP0]); 2729 ANHE_at_cache (periodics [HEAP0]);
1770 downheap (periodics, periodiccnt, HEAP0); 2730 downheap (periodics, periodiccnt, HEAP0);
2731 }
2732 else if (w->interval)
2733 {
2734 periodic_recalc (EV_A_ w);
2735 ANHE_at_cache (periodics [HEAP0]);
2736 downheap (periodics, periodiccnt, HEAP0);
2737 }
2738 else
2739 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2740
2741 EV_FREQUENT_CHECK;
2742 feed_reverse (EV_A_ (W)w);
1771 } 2743 }
1772 else if (w->interval) 2744 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1773 {
1774 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1775 /* if next trigger time is not sufficiently in the future, put it there */
1776 /* this might happen because of floating point inexactness */
1777 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1778 {
1779 ev_at (w) += w->interval;
1780 2745
1781 /* if interval is unreasonably low we might still have a time in the past */
1782 /* so correct this. this will make the periodic very inexact, but the user */
1783 /* has effectively asked to get triggered more often than possible */
1784 if (ev_at (w) < ev_rt_now)
1785 ev_at (w) = ev_rt_now;
1786 }
1787
1788 ANHE_at_cache (periodics [HEAP0]);
1789 downheap (periodics, periodiccnt, HEAP0);
1790 }
1791 else
1792 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1793
1794 EV_FREQUENT_CHECK;
1795 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2746 feed_reverse_done (EV_A_ EV_PERIODIC);
1796 } 2747 }
1797} 2748}
1798 2749
2750/* simply recalculate all periodics */
2751/* TODO: maybe ensure that at least one event happens when jumping forward? */
1799static void noinline 2752static void noinline ecb_cold
1800periodics_reschedule (EV_P) 2753periodics_reschedule (EV_P)
1801{ 2754{
1802 int i; 2755 int i;
1803 2756
1804 /* adjust periodics after time jump */ 2757 /* adjust periodics after time jump */
… …
1807 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2760 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1808 2761
1809 if (w->reschedule_cb) 2762 if (w->reschedule_cb)
1810 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2763 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1811 else if (w->interval) 2764 else if (w->interval)
1812 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2765 periodic_recalc (EV_A_ w);
1813 2766
1814 ANHE_at_cache (periodics [i]); 2767 ANHE_at_cache (periodics [i]);
1815 } 2768 }
1816 2769
1817 reheap (periodics, periodiccnt); 2770 reheap (periodics, periodiccnt);
1818} 2771}
1819#endif 2772#endif
1820 2773
1821void inline_speed 2774/* adjust all timers by a given offset */
2775static void noinline ecb_cold
2776timers_reschedule (EV_P_ ev_tstamp adjust)
2777{
2778 int i;
2779
2780 for (i = 0; i < timercnt; ++i)
2781 {
2782 ANHE *he = timers + i + HEAP0;
2783 ANHE_w (*he)->at += adjust;
2784 ANHE_at_cache (*he);
2785 }
2786}
2787
2788/* fetch new monotonic and realtime times from the kernel */
2789/* also detect if there was a timejump, and act accordingly */
2790inline_speed void
1822time_update (EV_P_ ev_tstamp max_block) 2791time_update (EV_P_ ev_tstamp max_block)
1823{ 2792{
1824 int i;
1825
1826#if EV_USE_MONOTONIC 2793#if EV_USE_MONOTONIC
1827 if (expect_true (have_monotonic)) 2794 if (expect_true (have_monotonic))
1828 { 2795 {
2796 int i;
1829 ev_tstamp odiff = rtmn_diff; 2797 ev_tstamp odiff = rtmn_diff;
1830 2798
1831 mn_now = get_clock (); 2799 mn_now = get_clock ();
1832 2800
1833 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2801 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1849 * doesn't hurt either as we only do this on time-jumps or 2817 * doesn't hurt either as we only do this on time-jumps or
1850 * in the unlikely event of having been preempted here. 2818 * in the unlikely event of having been preempted here.
1851 */ 2819 */
1852 for (i = 4; --i; ) 2820 for (i = 4; --i; )
1853 { 2821 {
2822 ev_tstamp diff;
1854 rtmn_diff = ev_rt_now - mn_now; 2823 rtmn_diff = ev_rt_now - mn_now;
1855 2824
2825 diff = odiff - rtmn_diff;
2826
1856 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2827 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1857 return; /* all is well */ 2828 return; /* all is well */
1858 2829
1859 ev_rt_now = ev_time (); 2830 ev_rt_now = ev_time ();
1860 mn_now = get_clock (); 2831 mn_now = get_clock ();
1861 now_floor = mn_now; 2832 now_floor = mn_now;
1862 } 2833 }
1863 2834
2835 /* no timer adjustment, as the monotonic clock doesn't jump */
2836 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1864# if EV_PERIODIC_ENABLE 2837# if EV_PERIODIC_ENABLE
1865 periodics_reschedule (EV_A); 2838 periodics_reschedule (EV_A);
1866# endif 2839# endif
1867 /* no timer adjustment, as the monotonic clock doesn't jump */
1868 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1869 } 2840 }
1870 else 2841 else
1871#endif 2842#endif
1872 { 2843 {
1873 ev_rt_now = ev_time (); 2844 ev_rt_now = ev_time ();
1874 2845
1875 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2846 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1876 { 2847 {
2848 /* adjust timers. this is easy, as the offset is the same for all of them */
2849 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1877#if EV_PERIODIC_ENABLE 2850#if EV_PERIODIC_ENABLE
1878 periodics_reschedule (EV_A); 2851 periodics_reschedule (EV_A);
1879#endif 2852#endif
1880 /* adjust timers. this is easy, as the offset is the same for all of them */
1881 for (i = 0; i < timercnt; ++i)
1882 {
1883 ANHE *he = timers + i + HEAP0;
1884 ANHE_w (*he)->at += ev_rt_now - mn_now;
1885 ANHE_at_cache (*he);
1886 }
1887 } 2853 }
1888 2854
1889 mn_now = ev_rt_now; 2855 mn_now = ev_rt_now;
1890 } 2856 }
1891} 2857}
1892 2858
1893void 2859void
1894ev_ref (EV_P)
1895{
1896 ++activecnt;
1897}
1898
1899void
1900ev_unref (EV_P)
1901{
1902 --activecnt;
1903}
1904
1905void
1906ev_now_update (EV_P)
1907{
1908 time_update (EV_A_ 1e100);
1909}
1910
1911static int loop_done;
1912
1913void
1914ev_loop (EV_P_ int flags) 2860ev_run (EV_P_ int flags)
1915{ 2861{
2862#if EV_FEATURE_API
2863 ++loop_depth;
2864#endif
2865
2866 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2867
1916 loop_done = EVUNLOOP_CANCEL; 2868 loop_done = EVBREAK_CANCEL;
1917 2869
1918 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2870 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1919 2871
1920 do 2872 do
1921 { 2873 {
1922#if EV_VERIFY >= 2 2874#if EV_VERIFY >= 2
1923 ev_loop_verify (EV_A); 2875 ev_verify (EV_A);
1924#endif 2876#endif
1925 2877
1926#ifndef _WIN32 2878#ifndef _WIN32
1927 if (expect_false (curpid)) /* penalise the forking check even more */ 2879 if (expect_false (curpid)) /* penalise the forking check even more */
1928 if (expect_false (getpid () != curpid)) 2880 if (expect_false (getpid () != curpid))
… …
1936 /* we might have forked, so queue fork handlers */ 2888 /* we might have forked, so queue fork handlers */
1937 if (expect_false (postfork)) 2889 if (expect_false (postfork))
1938 if (forkcnt) 2890 if (forkcnt)
1939 { 2891 {
1940 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2892 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1941 call_pending (EV_A); 2893 EV_INVOKE_PENDING;
1942 } 2894 }
1943#endif 2895#endif
1944 2896
2897#if EV_PREPARE_ENABLE
1945 /* queue prepare watchers (and execute them) */ 2898 /* queue prepare watchers (and execute them) */
1946 if (expect_false (preparecnt)) 2899 if (expect_false (preparecnt))
1947 { 2900 {
1948 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2901 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1949 call_pending (EV_A); 2902 EV_INVOKE_PENDING;
1950 } 2903 }
2904#endif
1951 2905
1952 if (expect_false (!activecnt)) 2906 if (expect_false (loop_done))
1953 break; 2907 break;
1954 2908
1955 /* we might have forked, so reify kernel state if necessary */ 2909 /* we might have forked, so reify kernel state if necessary */
1956 if (expect_false (postfork)) 2910 if (expect_false (postfork))
1957 loop_fork (EV_A); 2911 loop_fork (EV_A);
… …
1962 /* calculate blocking time */ 2916 /* calculate blocking time */
1963 { 2917 {
1964 ev_tstamp waittime = 0.; 2918 ev_tstamp waittime = 0.;
1965 ev_tstamp sleeptime = 0.; 2919 ev_tstamp sleeptime = 0.;
1966 2920
2921 /* remember old timestamp for io_blocktime calculation */
2922 ev_tstamp prev_mn_now = mn_now;
2923
2924 /* update time to cancel out callback processing overhead */
2925 time_update (EV_A_ 1e100);
2926
2927 /* from now on, we want a pipe-wake-up */
2928 pipe_write_wanted = 1;
2929
2930 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2931
1967 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2932 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1968 { 2933 {
1969 /* update time to cancel out callback processing overhead */
1970 time_update (EV_A_ 1e100);
1971
1972 waittime = MAX_BLOCKTIME; 2934 waittime = MAX_BLOCKTIME;
1973 2935
1974 if (timercnt) 2936 if (timercnt)
1975 { 2937 {
1976 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2938 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1977 if (waittime > to) waittime = to; 2939 if (waittime > to) waittime = to;
1978 } 2940 }
1979 2941
1980#if EV_PERIODIC_ENABLE 2942#if EV_PERIODIC_ENABLE
1981 if (periodiccnt) 2943 if (periodiccnt)
1982 { 2944 {
1983 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2945 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1984 if (waittime > to) waittime = to; 2946 if (waittime > to) waittime = to;
1985 } 2947 }
1986#endif 2948#endif
1987 2949
2950 /* don't let timeouts decrease the waittime below timeout_blocktime */
1988 if (expect_false (waittime < timeout_blocktime)) 2951 if (expect_false (waittime < timeout_blocktime))
1989 waittime = timeout_blocktime; 2952 waittime = timeout_blocktime;
1990 2953
1991 sleeptime = waittime - backend_fudge; 2954 /* at this point, we NEED to wait, so we have to ensure */
2955 /* to pass a minimum nonzero value to the backend */
2956 if (expect_false (waittime < backend_mintime))
2957 waittime = backend_mintime;
1992 2958
2959 /* extra check because io_blocktime is commonly 0 */
1993 if (expect_true (sleeptime > io_blocktime)) 2960 if (expect_false (io_blocktime))
1994 sleeptime = io_blocktime;
1995
1996 if (sleeptime)
1997 { 2961 {
2962 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2963
2964 if (sleeptime > waittime - backend_mintime)
2965 sleeptime = waittime - backend_mintime;
2966
2967 if (expect_true (sleeptime > 0.))
2968 {
1998 ev_sleep (sleeptime); 2969 ev_sleep (sleeptime);
1999 waittime -= sleeptime; 2970 waittime -= sleeptime;
2971 }
2000 } 2972 }
2001 } 2973 }
2002 2974
2975#if EV_FEATURE_API
2003 ++loop_count; 2976 ++loop_count;
2977#endif
2978 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2004 backend_poll (EV_A_ waittime); 2979 backend_poll (EV_A_ waittime);
2980 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2981
2982 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2983
2984 if (pipe_write_skipped)
2985 {
2986 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2987 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2988 }
2989
2005 2990
2006 /* update ev_rt_now, do magic */ 2991 /* update ev_rt_now, do magic */
2007 time_update (EV_A_ waittime + sleeptime); 2992 time_update (EV_A_ waittime + sleeptime);
2008 } 2993 }
2009 2994
… …
2016#if EV_IDLE_ENABLE 3001#if EV_IDLE_ENABLE
2017 /* queue idle watchers unless other events are pending */ 3002 /* queue idle watchers unless other events are pending */
2018 idle_reify (EV_A); 3003 idle_reify (EV_A);
2019#endif 3004#endif
2020 3005
3006#if EV_CHECK_ENABLE
2021 /* queue check watchers, to be executed first */ 3007 /* queue check watchers, to be executed first */
2022 if (expect_false (checkcnt)) 3008 if (expect_false (checkcnt))
2023 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3009 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3010#endif
2024 3011
2025 call_pending (EV_A); 3012 EV_INVOKE_PENDING;
2026 } 3013 }
2027 while (expect_true ( 3014 while (expect_true (
2028 activecnt 3015 activecnt
2029 && !loop_done 3016 && !loop_done
2030 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3017 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2031 )); 3018 ));
2032 3019
2033 if (loop_done == EVUNLOOP_ONE) 3020 if (loop_done == EVBREAK_ONE)
2034 loop_done = EVUNLOOP_CANCEL; 3021 loop_done = EVBREAK_CANCEL;
3022
3023#if EV_FEATURE_API
3024 --loop_depth;
3025#endif
2035} 3026}
2036 3027
2037void 3028void
2038ev_unloop (EV_P_ int how) 3029ev_break (EV_P_ int how)
2039{ 3030{
2040 loop_done = how; 3031 loop_done = how;
2041} 3032}
2042 3033
3034void
3035ev_ref (EV_P)
3036{
3037 ++activecnt;
3038}
3039
3040void
3041ev_unref (EV_P)
3042{
3043 --activecnt;
3044}
3045
3046void
3047ev_now_update (EV_P)
3048{
3049 time_update (EV_A_ 1e100);
3050}
3051
3052void
3053ev_suspend (EV_P)
3054{
3055 ev_now_update (EV_A);
3056}
3057
3058void
3059ev_resume (EV_P)
3060{
3061 ev_tstamp mn_prev = mn_now;
3062
3063 ev_now_update (EV_A);
3064 timers_reschedule (EV_A_ mn_now - mn_prev);
3065#if EV_PERIODIC_ENABLE
3066 /* TODO: really do this? */
3067 periodics_reschedule (EV_A);
3068#endif
3069}
3070
2043/*****************************************************************************/ 3071/*****************************************************************************/
3072/* singly-linked list management, used when the expected list length is short */
2044 3073
2045void inline_size 3074inline_size void
2046wlist_add (WL *head, WL elem) 3075wlist_add (WL *head, WL elem)
2047{ 3076{
2048 elem->next = *head; 3077 elem->next = *head;
2049 *head = elem; 3078 *head = elem;
2050} 3079}
2051 3080
2052void inline_size 3081inline_size void
2053wlist_del (WL *head, WL elem) 3082wlist_del (WL *head, WL elem)
2054{ 3083{
2055 while (*head) 3084 while (*head)
2056 { 3085 {
2057 if (*head == elem) 3086 if (expect_true (*head == elem))
2058 { 3087 {
2059 *head = elem->next; 3088 *head = elem->next;
2060 return; 3089 break;
2061 } 3090 }
2062 3091
2063 head = &(*head)->next; 3092 head = &(*head)->next;
2064 } 3093 }
2065} 3094}
2066 3095
2067void inline_speed 3096/* internal, faster, version of ev_clear_pending */
3097inline_speed void
2068clear_pending (EV_P_ W w) 3098clear_pending (EV_P_ W w)
2069{ 3099{
2070 if (w->pending) 3100 if (w->pending)
2071 { 3101 {
2072 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3102 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2073 w->pending = 0; 3103 w->pending = 0;
2074 } 3104 }
2075} 3105}
2076 3106
2077int 3107int
… …
2081 int pending = w_->pending; 3111 int pending = w_->pending;
2082 3112
2083 if (expect_true (pending)) 3113 if (expect_true (pending))
2084 { 3114 {
2085 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3115 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3116 p->w = (W)&pending_w;
2086 w_->pending = 0; 3117 w_->pending = 0;
2087 p->w = 0;
2088 return p->events; 3118 return p->events;
2089 } 3119 }
2090 else 3120 else
2091 return 0; 3121 return 0;
2092} 3122}
2093 3123
2094void inline_size 3124inline_size void
2095pri_adjust (EV_P_ W w) 3125pri_adjust (EV_P_ W w)
2096{ 3126{
2097 int pri = w->priority; 3127 int pri = ev_priority (w);
2098 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3128 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2099 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3129 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2100 w->priority = pri; 3130 ev_set_priority (w, pri);
2101} 3131}
2102 3132
2103void inline_speed 3133inline_speed void
2104ev_start (EV_P_ W w, int active) 3134ev_start (EV_P_ W w, int active)
2105{ 3135{
2106 pri_adjust (EV_A_ w); 3136 pri_adjust (EV_A_ w);
2107 w->active = active; 3137 w->active = active;
2108 ev_ref (EV_A); 3138 ev_ref (EV_A);
2109} 3139}
2110 3140
2111void inline_size 3141inline_size void
2112ev_stop (EV_P_ W w) 3142ev_stop (EV_P_ W w)
2113{ 3143{
2114 ev_unref (EV_A); 3144 ev_unref (EV_A);
2115 w->active = 0; 3145 w->active = 0;
2116} 3146}
… …
2123 int fd = w->fd; 3153 int fd = w->fd;
2124 3154
2125 if (expect_false (ev_is_active (w))) 3155 if (expect_false (ev_is_active (w)))
2126 return; 3156 return;
2127 3157
2128 assert (("ev_io_start called with negative fd", fd >= 0)); 3158 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2129 assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); 3159 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2130 3160
2131 EV_FREQUENT_CHECK; 3161 EV_FREQUENT_CHECK;
2132 3162
2133 ev_start (EV_A_ (W)w, 1); 3163 ev_start (EV_A_ (W)w, 1);
2134 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3164 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2135 wlist_add (&anfds[fd].head, (WL)w); 3165 wlist_add (&anfds[fd].head, (WL)w);
2136 3166
2137 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 3167 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2138 w->events &= ~EV_IOFDSET; 3168 w->events &= ~EV__IOFDSET;
2139 3169
2140 EV_FREQUENT_CHECK; 3170 EV_FREQUENT_CHECK;
2141} 3171}
2142 3172
2143void noinline 3173void noinline
… …
2145{ 3175{
2146 clear_pending (EV_A_ (W)w); 3176 clear_pending (EV_A_ (W)w);
2147 if (expect_false (!ev_is_active (w))) 3177 if (expect_false (!ev_is_active (w)))
2148 return; 3178 return;
2149 3179
2150 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3180 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2151 3181
2152 EV_FREQUENT_CHECK; 3182 EV_FREQUENT_CHECK;
2153 3183
2154 wlist_del (&anfds[w->fd].head, (WL)w); 3184 wlist_del (&anfds[w->fd].head, (WL)w);
2155 ev_stop (EV_A_ (W)w); 3185 ev_stop (EV_A_ (W)w);
2156 3186
2157 fd_change (EV_A_ w->fd, 1); 3187 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2158 3188
2159 EV_FREQUENT_CHECK; 3189 EV_FREQUENT_CHECK;
2160} 3190}
2161 3191
2162void noinline 3192void noinline
… …
2165 if (expect_false (ev_is_active (w))) 3195 if (expect_false (ev_is_active (w)))
2166 return; 3196 return;
2167 3197
2168 ev_at (w) += mn_now; 3198 ev_at (w) += mn_now;
2169 3199
2170 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 3200 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2171 3201
2172 EV_FREQUENT_CHECK; 3202 EV_FREQUENT_CHECK;
2173 3203
2174 ++timercnt; 3204 ++timercnt;
2175 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3205 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2178 ANHE_at_cache (timers [ev_active (w)]); 3208 ANHE_at_cache (timers [ev_active (w)]);
2179 upheap (timers, ev_active (w)); 3209 upheap (timers, ev_active (w));
2180 3210
2181 EV_FREQUENT_CHECK; 3211 EV_FREQUENT_CHECK;
2182 3212
2183 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3213 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2184} 3214}
2185 3215
2186void noinline 3216void noinline
2187ev_timer_stop (EV_P_ ev_timer *w) 3217ev_timer_stop (EV_P_ ev_timer *w)
2188{ 3218{
… …
2193 EV_FREQUENT_CHECK; 3223 EV_FREQUENT_CHECK;
2194 3224
2195 { 3225 {
2196 int active = ev_active (w); 3226 int active = ev_active (w);
2197 3227
2198 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 3228 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2199 3229
2200 --timercnt; 3230 --timercnt;
2201 3231
2202 if (expect_true (active < timercnt + HEAP0)) 3232 if (expect_true (active < timercnt + HEAP0))
2203 { 3233 {
2204 timers [active] = timers [timercnt + HEAP0]; 3234 timers [active] = timers [timercnt + HEAP0];
2205 adjustheap (timers, timercnt, active); 3235 adjustheap (timers, timercnt, active);
2206 } 3236 }
2207 } 3237 }
2208 3238
2209 EV_FREQUENT_CHECK;
2210
2211 ev_at (w) -= mn_now; 3239 ev_at (w) -= mn_now;
2212 3240
2213 ev_stop (EV_A_ (W)w); 3241 ev_stop (EV_A_ (W)w);
3242
3243 EV_FREQUENT_CHECK;
2214} 3244}
2215 3245
2216void noinline 3246void noinline
2217ev_timer_again (EV_P_ ev_timer *w) 3247ev_timer_again (EV_P_ ev_timer *w)
2218{ 3248{
… …
2236 } 3266 }
2237 3267
2238 EV_FREQUENT_CHECK; 3268 EV_FREQUENT_CHECK;
2239} 3269}
2240 3270
3271ev_tstamp
3272ev_timer_remaining (EV_P_ ev_timer *w)
3273{
3274 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3275}
3276
2241#if EV_PERIODIC_ENABLE 3277#if EV_PERIODIC_ENABLE
2242void noinline 3278void noinline
2243ev_periodic_start (EV_P_ ev_periodic *w) 3279ev_periodic_start (EV_P_ ev_periodic *w)
2244{ 3280{
2245 if (expect_false (ev_is_active (w))) 3281 if (expect_false (ev_is_active (w)))
… …
2247 3283
2248 if (w->reschedule_cb) 3284 if (w->reschedule_cb)
2249 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3285 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2250 else if (w->interval) 3286 else if (w->interval)
2251 { 3287 {
2252 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 3288 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2253 /* this formula differs from the one in periodic_reify because we do not always round up */ 3289 periodic_recalc (EV_A_ w);
2254 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2255 } 3290 }
2256 else 3291 else
2257 ev_at (w) = w->offset; 3292 ev_at (w) = w->offset;
2258 3293
2259 EV_FREQUENT_CHECK; 3294 EV_FREQUENT_CHECK;
… …
2265 ANHE_at_cache (periodics [ev_active (w)]); 3300 ANHE_at_cache (periodics [ev_active (w)]);
2266 upheap (periodics, ev_active (w)); 3301 upheap (periodics, ev_active (w));
2267 3302
2268 EV_FREQUENT_CHECK; 3303 EV_FREQUENT_CHECK;
2269 3304
2270 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3305 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2271} 3306}
2272 3307
2273void noinline 3308void noinline
2274ev_periodic_stop (EV_P_ ev_periodic *w) 3309ev_periodic_stop (EV_P_ ev_periodic *w)
2275{ 3310{
… …
2280 EV_FREQUENT_CHECK; 3315 EV_FREQUENT_CHECK;
2281 3316
2282 { 3317 {
2283 int active = ev_active (w); 3318 int active = ev_active (w);
2284 3319
2285 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 3320 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2286 3321
2287 --periodiccnt; 3322 --periodiccnt;
2288 3323
2289 if (expect_true (active < periodiccnt + HEAP0)) 3324 if (expect_true (active < periodiccnt + HEAP0))
2290 { 3325 {
2291 periodics [active] = periodics [periodiccnt + HEAP0]; 3326 periodics [active] = periodics [periodiccnt + HEAP0];
2292 adjustheap (periodics, periodiccnt, active); 3327 adjustheap (periodics, periodiccnt, active);
2293 } 3328 }
2294 } 3329 }
2295 3330
2296 EV_FREQUENT_CHECK;
2297
2298 ev_stop (EV_A_ (W)w); 3331 ev_stop (EV_A_ (W)w);
3332
3333 EV_FREQUENT_CHECK;
2299} 3334}
2300 3335
2301void noinline 3336void noinline
2302ev_periodic_again (EV_P_ ev_periodic *w) 3337ev_periodic_again (EV_P_ ev_periodic *w)
2303{ 3338{
… …
2309 3344
2310#ifndef SA_RESTART 3345#ifndef SA_RESTART
2311# define SA_RESTART 0 3346# define SA_RESTART 0
2312#endif 3347#endif
2313 3348
3349#if EV_SIGNAL_ENABLE
3350
2314void noinline 3351void noinline
2315ev_signal_start (EV_P_ ev_signal *w) 3352ev_signal_start (EV_P_ ev_signal *w)
2316{ 3353{
2317#if EV_MULTIPLICITY
2318 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2319#endif
2320 if (expect_false (ev_is_active (w))) 3354 if (expect_false (ev_is_active (w)))
2321 return; 3355 return;
2322 3356
2323 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3357 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2324 3358
2325 evpipe_init (EV_A); 3359#if EV_MULTIPLICITY
3360 assert (("libev: a signal must not be attached to two different loops",
3361 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2326 3362
2327 EV_FREQUENT_CHECK; 3363 signals [w->signum - 1].loop = EV_A;
3364#endif
2328 3365
3366 EV_FREQUENT_CHECK;
3367
3368#if EV_USE_SIGNALFD
3369 if (sigfd == -2)
2329 { 3370 {
2330#ifndef _WIN32 3371 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2331 sigset_t full, prev; 3372 if (sigfd < 0 && errno == EINVAL)
2332 sigfillset (&full); 3373 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2333 sigprocmask (SIG_SETMASK, &full, &prev);
2334#endif
2335 3374
2336 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3375 if (sigfd >= 0)
3376 {
3377 fd_intern (sigfd); /* doing it twice will not hurt */
2337 3378
2338#ifndef _WIN32 3379 sigemptyset (&sigfd_set);
2339 sigprocmask (SIG_SETMASK, &prev, 0); 3380
2340#endif 3381 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3382 ev_set_priority (&sigfd_w, EV_MAXPRI);
3383 ev_io_start (EV_A_ &sigfd_w);
3384 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3385 }
2341 } 3386 }
3387
3388 if (sigfd >= 0)
3389 {
3390 /* TODO: check .head */
3391 sigaddset (&sigfd_set, w->signum);
3392 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3393
3394 signalfd (sigfd, &sigfd_set, 0);
3395 }
3396#endif
2342 3397
2343 ev_start (EV_A_ (W)w, 1); 3398 ev_start (EV_A_ (W)w, 1);
2344 wlist_add (&signals [w->signum - 1].head, (WL)w); 3399 wlist_add (&signals [w->signum - 1].head, (WL)w);
2345 3400
2346 if (!((WL)w)->next) 3401 if (!((WL)w)->next)
3402# if EV_USE_SIGNALFD
3403 if (sigfd < 0) /*TODO*/
3404# endif
2347 { 3405 {
2348#if _WIN32 3406# ifdef _WIN32
3407 evpipe_init (EV_A);
3408
2349 signal (w->signum, ev_sighandler); 3409 signal (w->signum, ev_sighandler);
2350#else 3410# else
2351 struct sigaction sa; 3411 struct sigaction sa;
3412
3413 evpipe_init (EV_A);
3414
2352 sa.sa_handler = ev_sighandler; 3415 sa.sa_handler = ev_sighandler;
2353 sigfillset (&sa.sa_mask); 3416 sigfillset (&sa.sa_mask);
2354 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3417 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2355 sigaction (w->signum, &sa, 0); 3418 sigaction (w->signum, &sa, 0);
3419
3420 if (origflags & EVFLAG_NOSIGMASK)
3421 {
3422 sigemptyset (&sa.sa_mask);
3423 sigaddset (&sa.sa_mask, w->signum);
3424 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3425 }
2356#endif 3426#endif
2357 } 3427 }
2358 3428
2359 EV_FREQUENT_CHECK; 3429 EV_FREQUENT_CHECK;
2360} 3430}
2361 3431
2362void noinline 3432void noinline
… …
2370 3440
2371 wlist_del (&signals [w->signum - 1].head, (WL)w); 3441 wlist_del (&signals [w->signum - 1].head, (WL)w);
2372 ev_stop (EV_A_ (W)w); 3442 ev_stop (EV_A_ (W)w);
2373 3443
2374 if (!signals [w->signum - 1].head) 3444 if (!signals [w->signum - 1].head)
3445 {
3446#if EV_MULTIPLICITY
3447 signals [w->signum - 1].loop = 0; /* unattach from signal */
3448#endif
3449#if EV_USE_SIGNALFD
3450 if (sigfd >= 0)
3451 {
3452 sigset_t ss;
3453
3454 sigemptyset (&ss);
3455 sigaddset (&ss, w->signum);
3456 sigdelset (&sigfd_set, w->signum);
3457
3458 signalfd (sigfd, &sigfd_set, 0);
3459 sigprocmask (SIG_UNBLOCK, &ss, 0);
3460 }
3461 else
3462#endif
2375 signal (w->signum, SIG_DFL); 3463 signal (w->signum, SIG_DFL);
3464 }
2376 3465
2377 EV_FREQUENT_CHECK; 3466 EV_FREQUENT_CHECK;
2378} 3467}
3468
3469#endif
3470
3471#if EV_CHILD_ENABLE
2379 3472
2380void 3473void
2381ev_child_start (EV_P_ ev_child *w) 3474ev_child_start (EV_P_ ev_child *w)
2382{ 3475{
2383#if EV_MULTIPLICITY 3476#if EV_MULTIPLICITY
2384 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3477 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2385#endif 3478#endif
2386 if (expect_false (ev_is_active (w))) 3479 if (expect_false (ev_is_active (w)))
2387 return; 3480 return;
2388 3481
2389 EV_FREQUENT_CHECK; 3482 EV_FREQUENT_CHECK;
2390 3483
2391 ev_start (EV_A_ (W)w, 1); 3484 ev_start (EV_A_ (W)w, 1);
2392 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3485 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2393 3486
2394 EV_FREQUENT_CHECK; 3487 EV_FREQUENT_CHECK;
2395} 3488}
2396 3489
2397void 3490void
… …
2401 if (expect_false (!ev_is_active (w))) 3494 if (expect_false (!ev_is_active (w)))
2402 return; 3495 return;
2403 3496
2404 EV_FREQUENT_CHECK; 3497 EV_FREQUENT_CHECK;
2405 3498
2406 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3499 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2407 ev_stop (EV_A_ (W)w); 3500 ev_stop (EV_A_ (W)w);
2408 3501
2409 EV_FREQUENT_CHECK; 3502 EV_FREQUENT_CHECK;
2410} 3503}
3504
3505#endif
2411 3506
2412#if EV_STAT_ENABLE 3507#if EV_STAT_ENABLE
2413 3508
2414# ifdef _WIN32 3509# ifdef _WIN32
2415# undef lstat 3510# undef lstat
2416# define lstat(a,b) _stati64 (a,b) 3511# define lstat(a,b) _stati64 (a,b)
2417# endif 3512# endif
2418 3513
2419#define DEF_STAT_INTERVAL 5.0074891 3514#define DEF_STAT_INTERVAL 5.0074891
3515#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2420#define MIN_STAT_INTERVAL 0.1074891 3516#define MIN_STAT_INTERVAL 0.1074891
2421 3517
2422static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3518static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2423 3519
2424#if EV_USE_INOTIFY 3520#if EV_USE_INOTIFY
2425# define EV_INOTIFY_BUFSIZE 8192 3521
3522/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3523# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2426 3524
2427static void noinline 3525static void noinline
2428infy_add (EV_P_ ev_stat *w) 3526infy_add (EV_P_ ev_stat *w)
2429{ 3527{
2430 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3528 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2431 3529
2432 if (w->wd < 0) 3530 if (w->wd >= 0)
3531 {
3532 struct statfs sfs;
3533
3534 /* now local changes will be tracked by inotify, but remote changes won't */
3535 /* unless the filesystem is known to be local, we therefore still poll */
3536 /* also do poll on <2.6.25, but with normal frequency */
3537
3538 if (!fs_2625)
3539 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3540 else if (!statfs (w->path, &sfs)
3541 && (sfs.f_type == 0x1373 /* devfs */
3542 || sfs.f_type == 0xEF53 /* ext2/3 */
3543 || sfs.f_type == 0x3153464a /* jfs */
3544 || sfs.f_type == 0x52654973 /* reiser3 */
3545 || sfs.f_type == 0x01021994 /* tempfs */
3546 || sfs.f_type == 0x58465342 /* xfs */))
3547 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3548 else
3549 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2433 { 3550 }
2434 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3551 else
3552 {
3553 /* can't use inotify, continue to stat */
3554 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2435 3555
2436 /* monitor some parent directory for speedup hints */ 3556 /* if path is not there, monitor some parent directory for speedup hints */
2437 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3557 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2438 /* but an efficiency issue only */ 3558 /* but an efficiency issue only */
2439 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3559 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2440 { 3560 {
2441 char path [4096]; 3561 char path [4096];
… …
2446 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3566 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2447 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3567 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2448 3568
2449 char *pend = strrchr (path, '/'); 3569 char *pend = strrchr (path, '/');
2450 3570
2451 if (!pend) 3571 if (!pend || pend == path)
2452 break; /* whoops, no '/', complain to your admin */ 3572 break;
2453 3573
2454 *pend = 0; 3574 *pend = 0;
2455 w->wd = inotify_add_watch (fs_fd, path, mask); 3575 w->wd = inotify_add_watch (fs_fd, path, mask);
2456 } 3576 }
2457 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3577 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2458 } 3578 }
2459 } 3579 }
2460 else
2461 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2462 3580
2463 if (w->wd >= 0) 3581 if (w->wd >= 0)
2464 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3582 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3583
3584 /* now re-arm timer, if required */
3585 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3586 ev_timer_again (EV_A_ &w->timer);
3587 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2465} 3588}
2466 3589
2467static void noinline 3590static void noinline
2468infy_del (EV_P_ ev_stat *w) 3591infy_del (EV_P_ ev_stat *w)
2469{ 3592{
… …
2472 3595
2473 if (wd < 0) 3596 if (wd < 0)
2474 return; 3597 return;
2475 3598
2476 w->wd = -2; 3599 w->wd = -2;
2477 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3600 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2478 wlist_del (&fs_hash [slot].head, (WL)w); 3601 wlist_del (&fs_hash [slot].head, (WL)w);
2479 3602
2480 /* remove this watcher, if others are watching it, they will rearm */ 3603 /* remove this watcher, if others are watching it, they will rearm */
2481 inotify_rm_watch (fs_fd, wd); 3604 inotify_rm_watch (fs_fd, wd);
2482} 3605}
… …
2484static void noinline 3607static void noinline
2485infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3608infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2486{ 3609{
2487 if (slot < 0) 3610 if (slot < 0)
2488 /* overflow, need to check for all hash slots */ 3611 /* overflow, need to check for all hash slots */
2489 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3612 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2490 infy_wd (EV_A_ slot, wd, ev); 3613 infy_wd (EV_A_ slot, wd, ev);
2491 else 3614 else
2492 { 3615 {
2493 WL w_; 3616 WL w_;
2494 3617
2495 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3618 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2496 { 3619 {
2497 ev_stat *w = (ev_stat *)w_; 3620 ev_stat *w = (ev_stat *)w_;
2498 w_ = w_->next; /* lets us remove this watcher and all before it */ 3621 w_ = w_->next; /* lets us remove this watcher and all before it */
2499 3622
2500 if (w->wd == wd || wd == -1) 3623 if (w->wd == wd || wd == -1)
2501 { 3624 {
2502 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3625 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2503 { 3626 {
3627 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2504 w->wd = -1; 3628 w->wd = -1;
2505 infy_add (EV_A_ w); /* re-add, no matter what */ 3629 infy_add (EV_A_ w); /* re-add, no matter what */
2506 } 3630 }
2507 3631
2508 stat_timer_cb (EV_A_ &w->timer, 0); 3632 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2513 3637
2514static void 3638static void
2515infy_cb (EV_P_ ev_io *w, int revents) 3639infy_cb (EV_P_ ev_io *w, int revents)
2516{ 3640{
2517 char buf [EV_INOTIFY_BUFSIZE]; 3641 char buf [EV_INOTIFY_BUFSIZE];
2518 struct inotify_event *ev = (struct inotify_event *)buf;
2519 int ofs; 3642 int ofs;
2520 int len = read (fs_fd, buf, sizeof (buf)); 3643 int len = read (fs_fd, buf, sizeof (buf));
2521 3644
2522 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3645 for (ofs = 0; ofs < len; )
3646 {
3647 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2523 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3648 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3649 ofs += sizeof (struct inotify_event) + ev->len;
3650 }
2524} 3651}
2525 3652
2526void inline_size 3653inline_size void ecb_cold
2527infy_init (EV_P) 3654ev_check_2625 (EV_P)
2528{ 3655{
2529 if (fs_fd != -2)
2530 return;
2531
2532 /* kernels < 2.6.25 are borked 3656 /* kernels < 2.6.25 are borked
2533 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3657 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2534 */ 3658 */
2535 { 3659 if (ev_linux_version () < 0x020619)
2536 struct utsname buf; 3660 return;
2537 int major, minor, micro;
2538 3661
3662 fs_2625 = 1;
3663}
3664
3665inline_size int
3666infy_newfd (void)
3667{
3668#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3669 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3670 if (fd >= 0)
3671 return fd;
3672#endif
3673 return inotify_init ();
3674}
3675
3676inline_size void
3677infy_init (EV_P)
3678{
3679 if (fs_fd != -2)
3680 return;
3681
2539 fs_fd = -1; 3682 fs_fd = -1;
2540 3683
2541 if (uname (&buf)) 3684 ev_check_2625 (EV_A);
2542 return;
2543 3685
2544 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2545 return;
2546
2547 if (major < 2
2548 || (major == 2 && minor < 6)
2549 || (major == 2 && minor == 6 && micro < 25))
2550 return;
2551 }
2552
2553 fs_fd = inotify_init (); 3686 fs_fd = infy_newfd ();
2554 3687
2555 if (fs_fd >= 0) 3688 if (fs_fd >= 0)
2556 { 3689 {
3690 fd_intern (fs_fd);
2557 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3691 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2558 ev_set_priority (&fs_w, EV_MAXPRI); 3692 ev_set_priority (&fs_w, EV_MAXPRI);
2559 ev_io_start (EV_A_ &fs_w); 3693 ev_io_start (EV_A_ &fs_w);
3694 ev_unref (EV_A);
2560 } 3695 }
2561} 3696}
2562 3697
2563void inline_size 3698inline_size void
2564infy_fork (EV_P) 3699infy_fork (EV_P)
2565{ 3700{
2566 int slot; 3701 int slot;
2567 3702
2568 if (fs_fd < 0) 3703 if (fs_fd < 0)
2569 return; 3704 return;
2570 3705
3706 ev_ref (EV_A);
3707 ev_io_stop (EV_A_ &fs_w);
2571 close (fs_fd); 3708 close (fs_fd);
2572 fs_fd = inotify_init (); 3709 fs_fd = infy_newfd ();
2573 3710
3711 if (fs_fd >= 0)
3712 {
3713 fd_intern (fs_fd);
3714 ev_io_set (&fs_w, fs_fd, EV_READ);
3715 ev_io_start (EV_A_ &fs_w);
3716 ev_unref (EV_A);
3717 }
3718
2574 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3719 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2575 { 3720 {
2576 WL w_ = fs_hash [slot].head; 3721 WL w_ = fs_hash [slot].head;
2577 fs_hash [slot].head = 0; 3722 fs_hash [slot].head = 0;
2578 3723
2579 while (w_) 3724 while (w_)
… …
2584 w->wd = -1; 3729 w->wd = -1;
2585 3730
2586 if (fs_fd >= 0) 3731 if (fs_fd >= 0)
2587 infy_add (EV_A_ w); /* re-add, no matter what */ 3732 infy_add (EV_A_ w); /* re-add, no matter what */
2588 else 3733 else
3734 {
3735 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3736 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2589 ev_timer_start (EV_A_ &w->timer); 3737 ev_timer_again (EV_A_ &w->timer);
3738 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3739 }
2590 } 3740 }
2591 } 3741 }
2592} 3742}
2593 3743
2594#endif 3744#endif
… …
2611static void noinline 3761static void noinline
2612stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3762stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2613{ 3763{
2614 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3764 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2615 3765
2616 /* we copy this here each the time so that */ 3766 ev_statdata prev = w->attr;
2617 /* prev has the old value when the callback gets invoked */
2618 w->prev = w->attr;
2619 ev_stat_stat (EV_A_ w); 3767 ev_stat_stat (EV_A_ w);
2620 3768
2621 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3769 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2622 if ( 3770 if (
2623 w->prev.st_dev != w->attr.st_dev 3771 prev.st_dev != w->attr.st_dev
2624 || w->prev.st_ino != w->attr.st_ino 3772 || prev.st_ino != w->attr.st_ino
2625 || w->prev.st_mode != w->attr.st_mode 3773 || prev.st_mode != w->attr.st_mode
2626 || w->prev.st_nlink != w->attr.st_nlink 3774 || prev.st_nlink != w->attr.st_nlink
2627 || w->prev.st_uid != w->attr.st_uid 3775 || prev.st_uid != w->attr.st_uid
2628 || w->prev.st_gid != w->attr.st_gid 3776 || prev.st_gid != w->attr.st_gid
2629 || w->prev.st_rdev != w->attr.st_rdev 3777 || prev.st_rdev != w->attr.st_rdev
2630 || w->prev.st_size != w->attr.st_size 3778 || prev.st_size != w->attr.st_size
2631 || w->prev.st_atime != w->attr.st_atime 3779 || prev.st_atime != w->attr.st_atime
2632 || w->prev.st_mtime != w->attr.st_mtime 3780 || prev.st_mtime != w->attr.st_mtime
2633 || w->prev.st_ctime != w->attr.st_ctime 3781 || prev.st_ctime != w->attr.st_ctime
2634 ) { 3782 ) {
3783 /* we only update w->prev on actual differences */
3784 /* in case we test more often than invoke the callback, */
3785 /* to ensure that prev is always different to attr */
3786 w->prev = prev;
3787
2635 #if EV_USE_INOTIFY 3788 #if EV_USE_INOTIFY
2636 if (fs_fd >= 0) 3789 if (fs_fd >= 0)
2637 { 3790 {
2638 infy_del (EV_A_ w); 3791 infy_del (EV_A_ w);
2639 infy_add (EV_A_ w); 3792 infy_add (EV_A_ w);
… …
2649ev_stat_start (EV_P_ ev_stat *w) 3802ev_stat_start (EV_P_ ev_stat *w)
2650{ 3803{
2651 if (expect_false (ev_is_active (w))) 3804 if (expect_false (ev_is_active (w)))
2652 return; 3805 return;
2653 3806
2654 /* since we use memcmp, we need to clear any padding data etc. */
2655 memset (&w->prev, 0, sizeof (ev_statdata));
2656 memset (&w->attr, 0, sizeof (ev_statdata));
2657
2658 ev_stat_stat (EV_A_ w); 3807 ev_stat_stat (EV_A_ w);
2659 3808
3809 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2660 if (w->interval < MIN_STAT_INTERVAL) 3810 w->interval = MIN_STAT_INTERVAL;
2661 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2662 3811
2663 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3812 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2664 ev_set_priority (&w->timer, ev_priority (w)); 3813 ev_set_priority (&w->timer, ev_priority (w));
2665 3814
2666#if EV_USE_INOTIFY 3815#if EV_USE_INOTIFY
2667 infy_init (EV_A); 3816 infy_init (EV_A);
2668 3817
2669 if (fs_fd >= 0) 3818 if (fs_fd >= 0)
2670 infy_add (EV_A_ w); 3819 infy_add (EV_A_ w);
2671 else 3820 else
2672#endif 3821#endif
3822 {
2673 ev_timer_start (EV_A_ &w->timer); 3823 ev_timer_again (EV_A_ &w->timer);
3824 ev_unref (EV_A);
3825 }
2674 3826
2675 ev_start (EV_A_ (W)w, 1); 3827 ev_start (EV_A_ (W)w, 1);
2676 3828
2677 EV_FREQUENT_CHECK; 3829 EV_FREQUENT_CHECK;
2678} 3830}
… …
2687 EV_FREQUENT_CHECK; 3839 EV_FREQUENT_CHECK;
2688 3840
2689#if EV_USE_INOTIFY 3841#if EV_USE_INOTIFY
2690 infy_del (EV_A_ w); 3842 infy_del (EV_A_ w);
2691#endif 3843#endif
3844
3845 if (ev_is_active (&w->timer))
3846 {
3847 ev_ref (EV_A);
2692 ev_timer_stop (EV_A_ &w->timer); 3848 ev_timer_stop (EV_A_ &w->timer);
3849 }
2693 3850
2694 ev_stop (EV_A_ (W)w); 3851 ev_stop (EV_A_ (W)w);
2695 3852
2696 EV_FREQUENT_CHECK; 3853 EV_FREQUENT_CHECK;
2697} 3854}
… …
2742 3899
2743 EV_FREQUENT_CHECK; 3900 EV_FREQUENT_CHECK;
2744} 3901}
2745#endif 3902#endif
2746 3903
3904#if EV_PREPARE_ENABLE
2747void 3905void
2748ev_prepare_start (EV_P_ ev_prepare *w) 3906ev_prepare_start (EV_P_ ev_prepare *w)
2749{ 3907{
2750 if (expect_false (ev_is_active (w))) 3908 if (expect_false (ev_is_active (w)))
2751 return; 3909 return;
… …
2777 3935
2778 ev_stop (EV_A_ (W)w); 3936 ev_stop (EV_A_ (W)w);
2779 3937
2780 EV_FREQUENT_CHECK; 3938 EV_FREQUENT_CHECK;
2781} 3939}
3940#endif
2782 3941
3942#if EV_CHECK_ENABLE
2783void 3943void
2784ev_check_start (EV_P_ ev_check *w) 3944ev_check_start (EV_P_ ev_check *w)
2785{ 3945{
2786 if (expect_false (ev_is_active (w))) 3946 if (expect_false (ev_is_active (w)))
2787 return; 3947 return;
… …
2813 3973
2814 ev_stop (EV_A_ (W)w); 3974 ev_stop (EV_A_ (W)w);
2815 3975
2816 EV_FREQUENT_CHECK; 3976 EV_FREQUENT_CHECK;
2817} 3977}
3978#endif
2818 3979
2819#if EV_EMBED_ENABLE 3980#if EV_EMBED_ENABLE
2820void noinline 3981void noinline
2821ev_embed_sweep (EV_P_ ev_embed *w) 3982ev_embed_sweep (EV_P_ ev_embed *w)
2822{ 3983{
2823 ev_loop (w->other, EVLOOP_NONBLOCK); 3984 ev_run (w->other, EVRUN_NOWAIT);
2824} 3985}
2825 3986
2826static void 3987static void
2827embed_io_cb (EV_P_ ev_io *io, int revents) 3988embed_io_cb (EV_P_ ev_io *io, int revents)
2828{ 3989{
2829 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3990 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2830 3991
2831 if (ev_cb (w)) 3992 if (ev_cb (w))
2832 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3993 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2833 else 3994 else
2834 ev_loop (w->other, EVLOOP_NONBLOCK); 3995 ev_run (w->other, EVRUN_NOWAIT);
2835} 3996}
2836 3997
2837static void 3998static void
2838embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3999embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2839{ 4000{
2840 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4001 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2841 4002
2842 { 4003 {
2843 struct ev_loop *loop = w->other; 4004 EV_P = w->other;
2844 4005
2845 while (fdchangecnt) 4006 while (fdchangecnt)
2846 { 4007 {
2847 fd_reify (EV_A); 4008 fd_reify (EV_A);
2848 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4009 ev_run (EV_A_ EVRUN_NOWAIT);
2849 } 4010 }
2850 } 4011 }
2851} 4012}
2852 4013
2853static void 4014static void
2854embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 4015embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2855{ 4016{
2856 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4017 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2857 4018
4019 ev_embed_stop (EV_A_ w);
4020
2858 { 4021 {
2859 struct ev_loop *loop = w->other; 4022 EV_P = w->other;
2860 4023
2861 ev_loop_fork (EV_A); 4024 ev_loop_fork (EV_A);
4025 ev_run (EV_A_ EVRUN_NOWAIT);
2862 } 4026 }
4027
4028 ev_embed_start (EV_A_ w);
2863} 4029}
2864 4030
2865#if 0 4031#if 0
2866static void 4032static void
2867embed_idle_cb (EV_P_ ev_idle *idle, int revents) 4033embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2875{ 4041{
2876 if (expect_false (ev_is_active (w))) 4042 if (expect_false (ev_is_active (w)))
2877 return; 4043 return;
2878 4044
2879 { 4045 {
2880 struct ev_loop *loop = w->other; 4046 EV_P = w->other;
2881 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4047 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2882 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4048 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2883 } 4049 }
2884 4050
2885 EV_FREQUENT_CHECK; 4051 EV_FREQUENT_CHECK;
2886 4052
… …
2912 4078
2913 ev_io_stop (EV_A_ &w->io); 4079 ev_io_stop (EV_A_ &w->io);
2914 ev_prepare_stop (EV_A_ &w->prepare); 4080 ev_prepare_stop (EV_A_ &w->prepare);
2915 ev_fork_stop (EV_A_ &w->fork); 4081 ev_fork_stop (EV_A_ &w->fork);
2916 4082
4083 ev_stop (EV_A_ (W)w);
4084
2917 EV_FREQUENT_CHECK; 4085 EV_FREQUENT_CHECK;
2918} 4086}
2919#endif 4087#endif
2920 4088
2921#if EV_FORK_ENABLE 4089#if EV_FORK_ENABLE
… …
2954 4122
2955 EV_FREQUENT_CHECK; 4123 EV_FREQUENT_CHECK;
2956} 4124}
2957#endif 4125#endif
2958 4126
4127#if EV_CLEANUP_ENABLE
4128void
4129ev_cleanup_start (EV_P_ ev_cleanup *w)
4130{
4131 if (expect_false (ev_is_active (w)))
4132 return;
4133
4134 EV_FREQUENT_CHECK;
4135
4136 ev_start (EV_A_ (W)w, ++cleanupcnt);
4137 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4138 cleanups [cleanupcnt - 1] = w;
4139
4140 /* cleanup watchers should never keep a refcount on the loop */
4141 ev_unref (EV_A);
4142 EV_FREQUENT_CHECK;
4143}
4144
4145void
4146ev_cleanup_stop (EV_P_ ev_cleanup *w)
4147{
4148 clear_pending (EV_A_ (W)w);
4149 if (expect_false (!ev_is_active (w)))
4150 return;
4151
4152 EV_FREQUENT_CHECK;
4153 ev_ref (EV_A);
4154
4155 {
4156 int active = ev_active (w);
4157
4158 cleanups [active - 1] = cleanups [--cleanupcnt];
4159 ev_active (cleanups [active - 1]) = active;
4160 }
4161
4162 ev_stop (EV_A_ (W)w);
4163
4164 EV_FREQUENT_CHECK;
4165}
4166#endif
4167
2959#if EV_ASYNC_ENABLE 4168#if EV_ASYNC_ENABLE
2960void 4169void
2961ev_async_start (EV_P_ ev_async *w) 4170ev_async_start (EV_P_ ev_async *w)
2962{ 4171{
2963 if (expect_false (ev_is_active (w))) 4172 if (expect_false (ev_is_active (w)))
2964 return; 4173 return;
2965 4174
4175 w->sent = 0;
4176
2966 evpipe_init (EV_A); 4177 evpipe_init (EV_A);
2967 4178
2968 EV_FREQUENT_CHECK; 4179 EV_FREQUENT_CHECK;
2969 4180
2970 ev_start (EV_A_ (W)w, ++asynccnt); 4181 ev_start (EV_A_ (W)w, ++asynccnt);
… …
2997 4208
2998void 4209void
2999ev_async_send (EV_P_ ev_async *w) 4210ev_async_send (EV_P_ ev_async *w)
3000{ 4211{
3001 w->sent = 1; 4212 w->sent = 1;
3002 evpipe_write (EV_A_ &gotasync); 4213 evpipe_write (EV_A_ &async_pending);
3003} 4214}
3004#endif 4215#endif
3005 4216
3006/*****************************************************************************/ 4217/*****************************************************************************/
3007 4218
… …
3047{ 4258{
3048 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4259 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3049 4260
3050 if (expect_false (!once)) 4261 if (expect_false (!once))
3051 { 4262 {
3052 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4263 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3053 return; 4264 return;
3054 } 4265 }
3055 4266
3056 once->cb = cb; 4267 once->cb = cb;
3057 once->arg = arg; 4268 once->arg = arg;
… …
3069 ev_timer_set (&once->to, timeout, 0.); 4280 ev_timer_set (&once->to, timeout, 0.);
3070 ev_timer_start (EV_A_ &once->to); 4281 ev_timer_start (EV_A_ &once->to);
3071 } 4282 }
3072} 4283}
3073 4284
4285/*****************************************************************************/
4286
4287#if EV_WALK_ENABLE
4288void ecb_cold
4289ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
4290{
4291 int i, j;
4292 ev_watcher_list *wl, *wn;
4293
4294 if (types & (EV_IO | EV_EMBED))
4295 for (i = 0; i < anfdmax; ++i)
4296 for (wl = anfds [i].head; wl; )
4297 {
4298 wn = wl->next;
4299
4300#if EV_EMBED_ENABLE
4301 if (ev_cb ((ev_io *)wl) == embed_io_cb)
4302 {
4303 if (types & EV_EMBED)
4304 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
4305 }
4306 else
4307#endif
4308#if EV_USE_INOTIFY
4309 if (ev_cb ((ev_io *)wl) == infy_cb)
4310 ;
4311 else
4312#endif
4313 if ((ev_io *)wl != &pipe_w)
4314 if (types & EV_IO)
4315 cb (EV_A_ EV_IO, wl);
4316
4317 wl = wn;
4318 }
4319
4320 if (types & (EV_TIMER | EV_STAT))
4321 for (i = timercnt + HEAP0; i-- > HEAP0; )
4322#if EV_STAT_ENABLE
4323 /*TODO: timer is not always active*/
4324 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
4325 {
4326 if (types & EV_STAT)
4327 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
4328 }
4329 else
4330#endif
4331 if (types & EV_TIMER)
4332 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
4333
4334#if EV_PERIODIC_ENABLE
4335 if (types & EV_PERIODIC)
4336 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4337 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4338#endif
4339
4340#if EV_IDLE_ENABLE
4341 if (types & EV_IDLE)
4342 for (j = NUMPRI; j--; )
4343 for (i = idlecnt [j]; i--; )
4344 cb (EV_A_ EV_IDLE, idles [j][i]);
4345#endif
4346
4347#if EV_FORK_ENABLE
4348 if (types & EV_FORK)
4349 for (i = forkcnt; i--; )
4350 if (ev_cb (forks [i]) != embed_fork_cb)
4351 cb (EV_A_ EV_FORK, forks [i]);
4352#endif
4353
4354#if EV_ASYNC_ENABLE
4355 if (types & EV_ASYNC)
4356 for (i = asynccnt; i--; )
4357 cb (EV_A_ EV_ASYNC, asyncs [i]);
4358#endif
4359
4360#if EV_PREPARE_ENABLE
4361 if (types & EV_PREPARE)
4362 for (i = preparecnt; i--; )
4363# if EV_EMBED_ENABLE
4364 if (ev_cb (prepares [i]) != embed_prepare_cb)
4365# endif
4366 cb (EV_A_ EV_PREPARE, prepares [i]);
4367#endif
4368
4369#if EV_CHECK_ENABLE
4370 if (types & EV_CHECK)
4371 for (i = checkcnt; i--; )
4372 cb (EV_A_ EV_CHECK, checks [i]);
4373#endif
4374
4375#if EV_SIGNAL_ENABLE
4376 if (types & EV_SIGNAL)
4377 for (i = 0; i < EV_NSIG - 1; ++i)
4378 for (wl = signals [i].head; wl; )
4379 {
4380 wn = wl->next;
4381 cb (EV_A_ EV_SIGNAL, wl);
4382 wl = wn;
4383 }
4384#endif
4385
4386#if EV_CHILD_ENABLE
4387 if (types & EV_CHILD)
4388 for (i = (EV_PID_HASHSIZE); i--; )
4389 for (wl = childs [i]; wl; )
4390 {
4391 wn = wl->next;
4392 cb (EV_A_ EV_CHILD, wl);
4393 wl = wn;
4394 }
4395#endif
4396/* EV_STAT 0x00001000 /* stat data changed */
4397/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4398}
4399#endif
4400
3074#if EV_MULTIPLICITY 4401#if EV_MULTIPLICITY
3075 #include "ev_wrap.h" 4402 #include "ev_wrap.h"
3076#endif 4403#endif
3077 4404
3078#ifdef __cplusplus 4405EV_CPP(})
3079}
3080#endif
3081 4406

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