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Comparing libev/ev.c (file contents):
Revision 1.286 by root, Wed Apr 15 19:37:15 2009 UTC vs.
Revision 1.381 by root, Mon Jun 27 21:29:35 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 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
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL)
65# define EV_USE_CLOCK_SYSCALL 0
62# endif 66# endif
63 67
64# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
65# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
66# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
… …
75# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
77# endif 81# endif
78# endif 82# endif
79 83
84# if HAVE_NANOSLEEP
80# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
81# if HAVE_NANOSLEEP
82# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
83# else 88# else
89# undef EV_USE_NANOSLEEP
84# 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
85# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
86# endif 100# endif
87 101
102# if HAVE_POLL && HAVE_POLL_H
88# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
89# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
90# define EV_USE_SELECT 1
91# else
92# define EV_USE_SELECT 0
93# endif 105# endif
94# endif
95
96# ifndef EV_USE_POLL
97# if HAVE_POLL && HAVE_POLL_H
98# define EV_USE_POLL 1
99# else 106# else
107# undef EV_USE_POLL
100# define EV_USE_POLL 0 108# define EV_USE_POLL 0
101# endif
102# endif 109# endif
103 110
104# ifndef EV_USE_EPOLL
105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
106# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
107# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
108# define EV_USE_EPOLL 0
109# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
110# endif 118# endif
111 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
112# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
113# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
114# define EV_USE_KQUEUE 1
115# else
116# define EV_USE_KQUEUE 0
117# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
118# endif 127# endif
119 128
120# ifndef EV_USE_PORT
121# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
122# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
123# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
124# define EV_USE_PORT 0
125# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
126# endif 136# endif
127 137
128# ifndef EV_USE_INOTIFY
129# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
130# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
131# else
132# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
133# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
134# endif 145# endif
135 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
136# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
137# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
138# define EV_USE_EVENTFD 1
139# else
140# define EV_USE_EVENTFD 0
141# 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
142# endif 163# endif
143 164
144#endif 165#endif
145 166
146#include <math.h>
147#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
148#include <fcntl.h> 169#include <fcntl.h>
149#include <stddef.h> 170#include <stddef.h>
150 171
151#include <stdio.h> 172#include <stdio.h>
152 173
153#include <assert.h> 174#include <assert.h>
154#include <errno.h> 175#include <errno.h>
155#include <sys/types.h> 176#include <sys/types.h>
156#include <time.h> 177#include <time.h>
178#include <limits.h>
157 179
158#include <signal.h> 180#include <signal.h>
159 181
160#ifdef EV_H 182#ifdef EV_H
161# include EV_H 183# include EV_H
162#else 184#else
163# include "ev.h" 185# include "ev.h"
164#endif 186#endif
187
188EV_CPP(extern "C" {)
165 189
166#ifndef _WIN32 190#ifndef _WIN32
167# include <sys/time.h> 191# include <sys/time.h>
168# include <sys/wait.h> 192# include <sys/wait.h>
169# include <unistd.h> 193# include <unistd.h>
… …
172# define WIN32_LEAN_AND_MEAN 196# define WIN32_LEAN_AND_MEAN
173# include <windows.h> 197# include <windows.h>
174# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
176# endif 200# endif
201# undef EV_AVOID_STDIO
177#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
178 211
179/* 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
180 245
181#ifndef EV_USE_CLOCK_SYSCALL 246#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 247# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1 248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 249# else
185# define EV_USE_CLOCK_SYSCALL 0 250# define EV_USE_CLOCK_SYSCALL 0
186# endif 251# endif
187#endif 252#endif
188 253
189#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 256# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 257# else
193# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
194# endif 259# endif
195#endif 260#endif
196 261
… …
198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 264#endif
200 265
201#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 267# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 268# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 269# else
205# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
206# endif 271# endif
207#endif 272#endif
208 273
209#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 276#endif
212 277
213#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
214# ifdef _WIN32 279# ifdef _WIN32
215# define EV_USE_POLL 0 280# define EV_USE_POLL 0
216# else 281# else
217# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 283# endif
219#endif 284#endif
220 285
221#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 289# else
225# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
226# endif 291# endif
227#endif 292#endif
228 293
… …
234# define EV_USE_PORT 0 299# define EV_USE_PORT 0
235#endif 300#endif
236 301
237#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 305# else
241# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
242# endif 307# endif
243#endif 308#endif
244 309
245#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
247# define EV_PID_HASHSIZE 1
248# else
249# define EV_PID_HASHSIZE 16
250# endif
251#endif 312#endif
252 313
253#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
255# define EV_INOTIFY_HASHSIZE 1
256# else
257# define EV_INOTIFY_HASHSIZE 16
258# endif
259#endif 316#endif
260 317
261#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 321# else
265# 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
266# endif 331# endif
267#endif 332#endif
268 333
269#if 0 /* debugging */ 334#if 0 /* debugging */
270# define EV_VERIFY 3 335# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 336# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 337# define EV_HEAP_CACHE_AT 1
273#endif 338#endif
274 339
275#ifndef EV_VERIFY 340#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 342#endif
278 343
279#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 346#endif
282 347
283#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
284# 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
285#endif 364#endif
286 365
287/* 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
288 373
289#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
290# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
291# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
292#endif 377#endif
… …
300# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
301# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
302#endif 387#endif
303 388
304#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
305# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
306# include <sys/select.h> 392# include <sys/select.h>
307# endif 393# endif
308#endif 394#endif
309 395
310#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h> 397# include <sys/statfs.h>
313# include <sys/inotify.h> 398# include <sys/inotify.h>
314/* 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 */
315# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
… …
320 405
321#if EV_SELECT_IS_WINSOCKET 406#if EV_SELECT_IS_WINSOCKET
322# include <winsock.h> 407# include <winsock.h>
323#endif 408#endif
324 409
325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
331# define EV_USE_MONOTONIC 1
332#endif
333
334#if EV_USE_EVENTFD 410#if EV_USE_EVENTFD
335/* 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 */
336# include <stdint.h> 412# include <stdint.h>
337# ifdef __cplusplus 413# ifndef EFD_NONBLOCK
338extern "C" { 414# define EFD_NONBLOCK O_NONBLOCK
339# endif 415# endif
340int eventfd (unsigned int initval, int flags); 416# ifndef EFD_CLOEXEC
341# ifdef __cplusplus 417# ifdef O_CLOEXEC
342} 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
343# 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};
344#endif 446#endif
345 447
346/**/ 448/**/
347 449
348#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 452#else
351# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
352#endif 454#endif
353 455
354/* 456/*
355 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
356 * It is added to ev_rt_now when scheduling periodics
357 * to ensure progress, time-wise, even when rounding
358 * errors are against us.
359 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
360 * Better solutions welcome.
361 */ 459 */
362#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 */
363 462
364#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) */
365#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) */
366/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
367 465
368#if __GNUC__ >= 4 466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
369# define expect(expr,value) __builtin_expect ((expr),(value)) 467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
370# define noinline __attribute__ ((noinline)) 468
469/* the following are taken from libecb */
470/* ecb.h start */
471
472/* many compilers define _GNUC_ to some versions but then only implement
473 * what their idiot authors think are the "more important" extensions,
474 * causing enourmous grief in return for some better fake benchmark numbers.
475 * or so.
476 * we try to detect these and simply assume they are not gcc - if they have
477 * an issue with that they should have done it right in the first place.
478 */
479#ifndef ECB_GCC_VERSION
480 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
481 #define ECB_GCC_VERSION(major,minor) 0
482 #else
483 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
484 #endif
485#endif
486
487#if __cplusplus
488 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__
491#elif ECB_C99
492 #define ecb_inline static inline
371#else 493#else
372# define expect(expr,value) (expr) 494 #define ecb_inline static
373# define noinline
374# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
375# define inline
376# endif 495#endif
377#endif
378 496
497#if ECB_GCC_VERSION(3,1)
498 #define ecb_attribute(attrlist) __attribute__(attrlist)
499 #define ecb_is_constant(expr) __builtin_constant_p (expr)
500 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
501 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
502#else
503 #define ecb_attribute(attrlist)
504 #define ecb_is_constant(expr) 0
505 #define ecb_expect(expr,value) (expr)
506 #define ecb_prefetch(addr,rw,locality)
507#endif
508
509#define ecb_noinline ecb_attribute ((__noinline__))
510#define ecb_noreturn ecb_attribute ((__noreturn__))
511#define ecb_unused ecb_attribute ((__unused__))
512#define ecb_const ecb_attribute ((__const__))
513#define ecb_pure ecb_attribute ((__pure__))
514
515#if ECB_GCC_VERSION(4,3)
516 #define ecb_artificial ecb_attribute ((__artificial__))
517 #define ecb_hot ecb_attribute ((__hot__))
518 #define ecb_cold ecb_attribute ((__cold__))
519#else
520 #define ecb_artificial
521 #define ecb_hot
522 #define ecb_cold
523#endif
524
525/* put around conditional expressions if you are very sure that the */
526/* expression is mostly true or mostly false. note that these return */
527/* booleans, not the expression. */
379#define expect_false(expr) expect ((expr) != 0, 0) 528#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 529#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
530/* ecb.h end */
531
532#define expect_false(cond) ecb_expect_false (cond)
533#define expect_true(cond) ecb_expect_true (cond)
534#define noinline ecb_noinline
535
381#define inline_size static inline 536#define inline_size ecb_inline
382 537
383#if EV_MINIMAL 538#if EV_FEATURE_CODE
539# define inline_speed ecb_inline
540#else
384# define inline_speed static noinline 541# define inline_speed static noinline
542#endif
543
544#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
545
546#if EV_MINPRI == EV_MAXPRI
547# define ABSPRI(w) (((W)w), 0)
385#else 548#else
386# define inline_speed static inline
387#endif
388
389#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
390#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 549# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
550#endif
391 551
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 552#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 553#define EMPTY2(a,b) /* used to suppress some warnings */
394 554
395typedef ev_watcher *W; 555typedef ev_watcher *W;
… …
399#define ev_active(w) ((W)(w))->active 559#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 560#define ev_at(w) ((WT)(w))->at
401 561
402#if EV_USE_REALTIME 562#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 563/* sig_atomic_t is used to avoid per-thread variables or locking but still */
404/* giving it a reasonably high chance of working on typical architetcures */ 564/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 565static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 566#endif
407 567
408#if EV_USE_MONOTONIC 568#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 569static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 570#endif
411 571
572#ifndef EV_FD_TO_WIN32_HANDLE
573# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
574#endif
575#ifndef EV_WIN32_HANDLE_TO_FD
576# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
577#endif
578#ifndef EV_WIN32_CLOSE_FD
579# define EV_WIN32_CLOSE_FD(fd) close (fd)
580#endif
581
412#ifdef _WIN32 582#ifdef _WIN32
413# include "ev_win32.c" 583# include "ev_win32.c"
414#endif 584#endif
415 585
416/*****************************************************************************/ 586/*****************************************************************************/
417 587
588/* define a suitable floor function (only used by periodics atm) */
589
590#if EV_USE_FLOOR
591# include <math.h>
592# define ev_floor(v) floor (v)
593#else
594
595#include <float.h>
596
597/* a floor() replacement function, should be independent of ev_tstamp type */
598static ev_tstamp noinline
599ev_floor (ev_tstamp v)
600{
601 /* the choice of shift factor is not terribly important */
602#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
603 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
604#else
605 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
606#endif
607
608 /* argument too large for an unsigned long? */
609 if (expect_false (v >= shift))
610 {
611 ev_tstamp f;
612
613 if (v == v - 1.)
614 return v; /* very large number */
615
616 f = shift * ev_floor (v * (1. / shift));
617 return f + ev_floor (v - f);
618 }
619
620 /* special treatment for negative args? */
621 if (expect_false (v < 0.))
622 {
623 ev_tstamp f = -ev_floor (-v);
624
625 return f - (f == v ? 0 : 1);
626 }
627
628 /* fits into an unsigned long */
629 return (unsigned long)v;
630}
631
632#endif
633
634/*****************************************************************************/
635
636#ifdef __linux
637# include <sys/utsname.h>
638#endif
639
640static unsigned int noinline ecb_cold
641ev_linux_version (void)
642{
643#ifdef __linux
644 unsigned int v = 0;
645 struct utsname buf;
646 int i;
647 char *p = buf.release;
648
649 if (uname (&buf))
650 return 0;
651
652 for (i = 3+1; --i; )
653 {
654 unsigned int c = 0;
655
656 for (;;)
657 {
658 if (*p >= '0' && *p <= '9')
659 c = c * 10 + *p++ - '0';
660 else
661 {
662 p += *p == '.';
663 break;
664 }
665 }
666
667 v = (v << 8) | c;
668 }
669
670 return v;
671#else
672 return 0;
673#endif
674}
675
676/*****************************************************************************/
677
678#if EV_AVOID_STDIO
679static void noinline ecb_cold
680ev_printerr (const char *msg)
681{
682 write (STDERR_FILENO, msg, strlen (msg));
683}
684#endif
685
418static void (*syserr_cb)(const char *msg); 686static void (*syserr_cb)(const char *msg);
419 687
420void 688void ecb_cold
421ev_set_syserr_cb (void (*cb)(const char *msg)) 689ev_set_syserr_cb (void (*cb)(const char *msg))
422{ 690{
423 syserr_cb = cb; 691 syserr_cb = cb;
424} 692}
425 693
426static void noinline 694static void noinline ecb_cold
427ev_syserr (const char *msg) 695ev_syserr (const char *msg)
428{ 696{
429 if (!msg) 697 if (!msg)
430 msg = "(libev) system error"; 698 msg = "(libev) system error";
431 699
432 if (syserr_cb) 700 if (syserr_cb)
433 syserr_cb (msg); 701 syserr_cb (msg);
434 else 702 else
435 { 703 {
704#if EV_AVOID_STDIO
705 ev_printerr (msg);
706 ev_printerr (": ");
707 ev_printerr (strerror (errno));
708 ev_printerr ("\n");
709#else
436 perror (msg); 710 perror (msg);
711#endif
437 abort (); 712 abort ();
438 } 713 }
439} 714}
440 715
441static void * 716static void *
442ev_realloc_emul (void *ptr, long size) 717ev_realloc_emul (void *ptr, long size)
443{ 718{
719#if __GLIBC__
720 return realloc (ptr, size);
721#else
444 /* some systems, notably openbsd and darwin, fail to properly 722 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 723 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 724 * the single unix specification, so work around them here.
447 */ 725 */
448 726
449 if (size) 727 if (size)
450 return realloc (ptr, size); 728 return realloc (ptr, size);
451 729
452 free (ptr); 730 free (ptr);
453 return 0; 731 return 0;
732#endif
454} 733}
455 734
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 735static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
457 736
458void 737void ecb_cold
459ev_set_allocator (void *(*cb)(void *ptr, long size)) 738ev_set_allocator (void *(*cb)(void *ptr, long size))
460{ 739{
461 alloc = cb; 740 alloc = cb;
462} 741}
463 742
… …
466{ 745{
467 ptr = alloc (ptr, size); 746 ptr = alloc (ptr, size);
468 747
469 if (!ptr && size) 748 if (!ptr && size)
470 { 749 {
750#if EV_AVOID_STDIO
751 ev_printerr ("(libev) memory allocation failed, aborting.\n");
752#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 753 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
754#endif
472 abort (); 755 abort ();
473 } 756 }
474 757
475 return ptr; 758 return ptr;
476} 759}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 761#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 762#define ev_free(ptr) ev_realloc ((ptr), 0)
480 763
481/*****************************************************************************/ 764/*****************************************************************************/
482 765
766/* set in reify when reification needed */
767#define EV_ANFD_REIFY 1
768
769/* file descriptor info structure */
483typedef struct 770typedef struct
484{ 771{
485 WL head; 772 WL head;
486 unsigned char events; 773 unsigned char events; /* the events watched for */
487 unsigned char reify; 774 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
488 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 775 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489 unsigned char unused; 776 unsigned char unused;
490#if EV_USE_EPOLL 777#if EV_USE_EPOLL
491 unsigned int egen; /* generation counter to counter epoll bugs */ 778 unsigned int egen; /* generation counter to counter epoll bugs */
492#endif 779#endif
493#if EV_SELECT_IS_WINSOCKET 780#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
494 SOCKET handle; 781 SOCKET handle;
495#endif 782#endif
783#if EV_USE_IOCP
784 OVERLAPPED or, ow;
785#endif
496} ANFD; 786} ANFD;
497 787
788/* stores the pending event set for a given watcher */
498typedef struct 789typedef struct
499{ 790{
500 W w; 791 W w;
501 int events; 792 int events; /* the pending event set for the given watcher */
502} ANPENDING; 793} ANPENDING;
503 794
504#if EV_USE_INOTIFY 795#if EV_USE_INOTIFY
505/* hash table entry per inotify-id */ 796/* hash table entry per inotify-id */
506typedef struct 797typedef struct
… …
509} ANFS; 800} ANFS;
510#endif 801#endif
511 802
512/* Heap Entry */ 803/* Heap Entry */
513#if EV_HEAP_CACHE_AT 804#if EV_HEAP_CACHE_AT
805 /* a heap element */
514 typedef struct { 806 typedef struct {
515 ev_tstamp at; 807 ev_tstamp at;
516 WT w; 808 WT w;
517 } ANHE; 809 } ANHE;
518 810
519 #define ANHE_w(he) (he).w /* access watcher, read-write */ 811 #define ANHE_w(he) (he).w /* access watcher, read-write */
520 #define ANHE_at(he) (he).at /* access cached at, read-only */ 812 #define ANHE_at(he) (he).at /* access cached at, read-only */
521 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 813 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522#else 814#else
815 /* a heap element */
523 typedef WT ANHE; 816 typedef WT ANHE;
524 817
525 #define ANHE_w(he) (he) 818 #define ANHE_w(he) (he)
526 #define ANHE_at(he) (he)->at 819 #define ANHE_at(he) (he)->at
527 #define ANHE_at_cache(he) 820 #define ANHE_at_cache(he)
… …
551 844
552 static int ev_default_loop_ptr; 845 static int ev_default_loop_ptr;
553 846
554#endif 847#endif
555 848
849#if EV_FEATURE_API
850# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
851# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
852# define EV_INVOKE_PENDING invoke_cb (EV_A)
853#else
854# define EV_RELEASE_CB (void)0
855# define EV_ACQUIRE_CB (void)0
856# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
857#endif
858
859#define EVBREAK_RECURSE 0x80
860
556/*****************************************************************************/ 861/*****************************************************************************/
557 862
863#ifndef EV_HAVE_EV_TIME
558ev_tstamp 864ev_tstamp
559ev_time (void) 865ev_time (void)
560{ 866{
561#if EV_USE_REALTIME 867#if EV_USE_REALTIME
562 if (expect_true (have_realtime)) 868 if (expect_true (have_realtime))
… …
569 875
570 struct timeval tv; 876 struct timeval tv;
571 gettimeofday (&tv, 0); 877 gettimeofday (&tv, 0);
572 return tv.tv_sec + tv.tv_usec * 1e-6; 878 return tv.tv_sec + tv.tv_usec * 1e-6;
573} 879}
880#endif
574 881
575inline_size ev_tstamp 882inline_size ev_tstamp
576get_clock (void) 883get_clock (void)
577{ 884{
578#if EV_USE_MONOTONIC 885#if EV_USE_MONOTONIC
… …
601 if (delay > 0.) 908 if (delay > 0.)
602 { 909 {
603#if EV_USE_NANOSLEEP 910#if EV_USE_NANOSLEEP
604 struct timespec ts; 911 struct timespec ts;
605 912
606 ts.tv_sec = (time_t)delay; 913 EV_TS_SET (ts, delay);
607 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
608
609 nanosleep (&ts, 0); 914 nanosleep (&ts, 0);
610#elif defined(_WIN32) 915#elif defined(_WIN32)
611 Sleep ((unsigned long)(delay * 1e3)); 916 Sleep ((unsigned long)(delay * 1e3));
612#else 917#else
613 struct timeval tv; 918 struct timeval tv;
614 919
615 tv.tv_sec = (time_t)delay;
616 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
617
618 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 920 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 921 /* something not guaranteed by newer posix versions, but guaranteed */
620 /* by older ones */ 922 /* by older ones */
923 EV_TV_SET (tv, delay);
621 select (0, 0, 0, 0, &tv); 924 select (0, 0, 0, 0, &tv);
622#endif 925#endif
623 } 926 }
624} 927}
625 928
626/*****************************************************************************/ 929/*****************************************************************************/
627 930
628#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 931#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629 932
933/* find a suitable new size for the given array, */
934/* hopefully by rounding to a nice-to-malloc size */
630inline_size int 935inline_size int
631array_nextsize (int elem, int cur, int cnt) 936array_nextsize (int elem, int cur, int cnt)
632{ 937{
633 int ncur = cur + 1; 938 int ncur = cur + 1;
634 939
… …
646 } 951 }
647 952
648 return ncur; 953 return ncur;
649} 954}
650 955
651static noinline void * 956static void * noinline ecb_cold
652array_realloc (int elem, void *base, int *cur, int cnt) 957array_realloc (int elem, void *base, int *cur, int cnt)
653{ 958{
654 *cur = array_nextsize (elem, *cur, cnt); 959 *cur = array_nextsize (elem, *cur, cnt);
655 return ev_realloc (base, elem * *cur); 960 return ev_realloc (base, elem * *cur);
656} 961}
… …
680#define array_free(stem, idx) \ 985#define array_free(stem, idx) \
681 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 986 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682 987
683/*****************************************************************************/ 988/*****************************************************************************/
684 989
990/* dummy callback for pending events */
991static void noinline
992pendingcb (EV_P_ ev_prepare *w, int revents)
993{
994}
995
685void noinline 996void noinline
686ev_feed_event (EV_P_ void *w, int revents) 997ev_feed_event (EV_P_ void *w, int revents)
687{ 998{
688 W w_ = (W)w; 999 W w_ = (W)w;
689 int pri = ABSPRI (w_); 1000 int pri = ABSPRI (w_);
… …
724} 1035}
725 1036
726/*****************************************************************************/ 1037/*****************************************************************************/
727 1038
728inline_speed void 1039inline_speed void
729fd_event (EV_P_ int fd, int revents) 1040fd_event_nocheck (EV_P_ int fd, int revents)
730{ 1041{
731 ANFD *anfd = anfds + fd; 1042 ANFD *anfd = anfds + fd;
732 ev_io *w; 1043 ev_io *w;
733 1044
734 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1045 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
738 if (ev) 1049 if (ev)
739 ev_feed_event (EV_A_ (W)w, ev); 1050 ev_feed_event (EV_A_ (W)w, ev);
740 } 1051 }
741} 1052}
742 1053
1054/* do not submit kernel events for fds that have reify set */
1055/* because that means they changed while we were polling for new events */
1056inline_speed void
1057fd_event (EV_P_ int fd, int revents)
1058{
1059 ANFD *anfd = anfds + fd;
1060
1061 if (expect_true (!anfd->reify))
1062 fd_event_nocheck (EV_A_ fd, revents);
1063}
1064
743void 1065void
744ev_feed_fd_event (EV_P_ int fd, int revents) 1066ev_feed_fd_event (EV_P_ int fd, int revents)
745{ 1067{
746 if (fd >= 0 && fd < anfdmax) 1068 if (fd >= 0 && fd < anfdmax)
747 fd_event (EV_A_ fd, revents); 1069 fd_event_nocheck (EV_A_ fd, revents);
748} 1070}
749 1071
1072/* make sure the external fd watch events are in-sync */
1073/* with the kernel/libev internal state */
750inline_size void 1074inline_size void
751fd_reify (EV_P) 1075fd_reify (EV_P)
752{ 1076{
753 int i; 1077 int i;
1078
1079#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1080 for (i = 0; i < fdchangecnt; ++i)
1081 {
1082 int fd = fdchanges [i];
1083 ANFD *anfd = anfds + fd;
1084
1085 if (anfd->reify & EV__IOFDSET && anfd->head)
1086 {
1087 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1088
1089 if (handle != anfd->handle)
1090 {
1091 unsigned long arg;
1092
1093 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1094
1095 /* handle changed, but fd didn't - we need to do it in two steps */
1096 backend_modify (EV_A_ fd, anfd->events, 0);
1097 anfd->events = 0;
1098 anfd->handle = handle;
1099 }
1100 }
1101 }
1102#endif
754 1103
755 for (i = 0; i < fdchangecnt; ++i) 1104 for (i = 0; i < fdchangecnt; ++i)
756 { 1105 {
757 int fd = fdchanges [i]; 1106 int fd = fdchanges [i];
758 ANFD *anfd = anfds + fd; 1107 ANFD *anfd = anfds + fd;
759 ev_io *w; 1108 ev_io *w;
760 1109
761 unsigned char events = 0; 1110 unsigned char o_events = anfd->events;
1111 unsigned char o_reify = anfd->reify;
762 1112
763 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1113 anfd->reify = 0;
764 events |= (unsigned char)w->events;
765 1114
766#if EV_SELECT_IS_WINSOCKET 1115 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
767 if (events)
768 { 1116 {
769 unsigned long arg; 1117 anfd->events = 0;
770 #ifdef EV_FD_TO_WIN32_HANDLE 1118
771 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1119 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
772 #else 1120 anfd->events |= (unsigned char)w->events;
773 anfd->handle = _get_osfhandle (fd); 1121
774 #endif 1122 if (o_events != anfd->events)
775 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1123 o_reify = EV__IOFDSET; /* actually |= */
776 } 1124 }
777#endif
778 1125
779 { 1126 if (o_reify & EV__IOFDSET)
780 unsigned char o_events = anfd->events;
781 unsigned char o_reify = anfd->reify;
782
783 anfd->reify = 0;
784 anfd->events = events;
785
786 if (o_events != events || o_reify & EV__IOFDSET)
787 backend_modify (EV_A_ fd, o_events, events); 1127 backend_modify (EV_A_ fd, o_events, anfd->events);
788 }
789 } 1128 }
790 1129
791 fdchangecnt = 0; 1130 fdchangecnt = 0;
792} 1131}
793 1132
1133/* something about the given fd changed */
794inline_size void 1134inline_size void
795fd_change (EV_P_ int fd, int flags) 1135fd_change (EV_P_ int fd, int flags)
796{ 1136{
797 unsigned char reify = anfds [fd].reify; 1137 unsigned char reify = anfds [fd].reify;
798 anfds [fd].reify |= flags; 1138 anfds [fd].reify |= flags;
… …
803 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1143 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
804 fdchanges [fdchangecnt - 1] = fd; 1144 fdchanges [fdchangecnt - 1] = fd;
805 } 1145 }
806} 1146}
807 1147
1148/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
808inline_speed void 1149inline_speed void ecb_cold
809fd_kill (EV_P_ int fd) 1150fd_kill (EV_P_ int fd)
810{ 1151{
811 ev_io *w; 1152 ev_io *w;
812 1153
813 while ((w = (ev_io *)anfds [fd].head)) 1154 while ((w = (ev_io *)anfds [fd].head))
… …
815 ev_io_stop (EV_A_ w); 1156 ev_io_stop (EV_A_ w);
816 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1157 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
817 } 1158 }
818} 1159}
819 1160
1161/* check whether the given fd is actually valid, for error recovery */
820inline_size int 1162inline_size int ecb_cold
821fd_valid (int fd) 1163fd_valid (int fd)
822{ 1164{
823#ifdef _WIN32 1165#ifdef _WIN32
824 return _get_osfhandle (fd) != -1; 1166 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
825#else 1167#else
826 return fcntl (fd, F_GETFD) != -1; 1168 return fcntl (fd, F_GETFD) != -1;
827#endif 1169#endif
828} 1170}
829 1171
830/* called on EBADF to verify fds */ 1172/* called on EBADF to verify fds */
831static void noinline 1173static void noinline ecb_cold
832fd_ebadf (EV_P) 1174fd_ebadf (EV_P)
833{ 1175{
834 int fd; 1176 int fd;
835 1177
836 for (fd = 0; fd < anfdmax; ++fd) 1178 for (fd = 0; fd < anfdmax; ++fd)
… …
838 if (!fd_valid (fd) && errno == EBADF) 1180 if (!fd_valid (fd) && errno == EBADF)
839 fd_kill (EV_A_ fd); 1181 fd_kill (EV_A_ fd);
840} 1182}
841 1183
842/* called on ENOMEM in select/poll to kill some fds and retry */ 1184/* called on ENOMEM in select/poll to kill some fds and retry */
843static void noinline 1185static void noinline ecb_cold
844fd_enomem (EV_P) 1186fd_enomem (EV_P)
845{ 1187{
846 int fd; 1188 int fd;
847 1189
848 for (fd = anfdmax; fd--; ) 1190 for (fd = anfdmax; fd--; )
849 if (anfds [fd].events) 1191 if (anfds [fd].events)
850 { 1192 {
851 fd_kill (EV_A_ fd); 1193 fd_kill (EV_A_ fd);
852 return; 1194 break;
853 } 1195 }
854} 1196}
855 1197
856/* usually called after fork if backend needs to re-arm all fds from scratch */ 1198/* usually called after fork if backend needs to re-arm all fds from scratch */
857static void noinline 1199static void noinline
… …
862 for (fd = 0; fd < anfdmax; ++fd) 1204 for (fd = 0; fd < anfdmax; ++fd)
863 if (anfds [fd].events) 1205 if (anfds [fd].events)
864 { 1206 {
865 anfds [fd].events = 0; 1207 anfds [fd].events = 0;
866 anfds [fd].emask = 0; 1208 anfds [fd].emask = 0;
867 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1209 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
868 } 1210 }
869} 1211}
870 1212
1213/* used to prepare libev internal fd's */
1214/* this is not fork-safe */
1215inline_speed void
1216fd_intern (int fd)
1217{
1218#ifdef _WIN32
1219 unsigned long arg = 1;
1220 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1221#else
1222 fcntl (fd, F_SETFD, FD_CLOEXEC);
1223 fcntl (fd, F_SETFL, O_NONBLOCK);
1224#endif
1225}
1226
871/*****************************************************************************/ 1227/*****************************************************************************/
872 1228
873/* 1229/*
874 * the heap functions want a real array index. array index 0 uis guaranteed to not 1230 * the heap functions want a real array index. array index 0 is guaranteed to not
875 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1231 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
876 * the branching factor of the d-tree. 1232 * the branching factor of the d-tree.
877 */ 1233 */
878 1234
879/* 1235/*
… …
947 1303
948 for (;;) 1304 for (;;)
949 { 1305 {
950 int c = k << 1; 1306 int c = k << 1;
951 1307
952 if (c > N + HEAP0 - 1) 1308 if (c >= N + HEAP0)
953 break; 1309 break;
954 1310
955 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1311 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
956 ? 1 : 0; 1312 ? 1 : 0;
957 1313
… …
989 1345
990 heap [k] = he; 1346 heap [k] = he;
991 ev_active (ANHE_w (he)) = k; 1347 ev_active (ANHE_w (he)) = k;
992} 1348}
993 1349
1350/* move an element suitably so it is in a correct place */
994inline_size void 1351inline_size void
995adjustheap (ANHE *heap, int N, int k) 1352adjustheap (ANHE *heap, int N, int k)
996{ 1353{
997 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1354 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
998 upheap (heap, k); 1355 upheap (heap, k);
999 else 1356 else
1000 downheap (heap, N, k); 1357 downheap (heap, N, k);
1001} 1358}
1002 1359
… …
1012 upheap (heap, i + HEAP0); 1369 upheap (heap, i + HEAP0);
1013} 1370}
1014 1371
1015/*****************************************************************************/ 1372/*****************************************************************************/
1016 1373
1374/* associate signal watchers to a signal signal */
1017typedef struct 1375typedef struct
1018{ 1376{
1377 EV_ATOMIC_T pending;
1378#if EV_MULTIPLICITY
1379 EV_P;
1380#endif
1019 WL head; 1381 WL head;
1020 EV_ATOMIC_T gotsig;
1021} ANSIG; 1382} ANSIG;
1022 1383
1023static ANSIG *signals; 1384static ANSIG signals [EV_NSIG - 1];
1024static int signalmax;
1025
1026static EV_ATOMIC_T gotsig;
1027 1385
1028/*****************************************************************************/ 1386/*****************************************************************************/
1029 1387
1030inline_speed void 1388#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1031fd_intern (int fd)
1032{
1033#ifdef _WIN32
1034 unsigned long arg = 1;
1035 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1036#else
1037 fcntl (fd, F_SETFD, FD_CLOEXEC);
1038 fcntl (fd, F_SETFL, O_NONBLOCK);
1039#endif
1040}
1041 1389
1042static void noinline 1390static void noinline ecb_cold
1043evpipe_init (EV_P) 1391evpipe_init (EV_P)
1044{ 1392{
1045 if (!ev_is_active (&pipeev)) 1393 if (!ev_is_active (&pipe_w))
1046 { 1394 {
1047#if EV_USE_EVENTFD 1395# if EV_USE_EVENTFD
1396 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1397 if (evfd < 0 && errno == EINVAL)
1048 if ((evfd = eventfd (0, 0)) >= 0) 1398 evfd = eventfd (0, 0);
1399
1400 if (evfd >= 0)
1049 { 1401 {
1050 evpipe [0] = -1; 1402 evpipe [0] = -1;
1051 fd_intern (evfd); 1403 fd_intern (evfd); /* doing it twice doesn't hurt */
1052 ev_io_set (&pipeev, evfd, EV_READ); 1404 ev_io_set (&pipe_w, evfd, EV_READ);
1053 } 1405 }
1054 else 1406 else
1055#endif 1407# endif
1056 { 1408 {
1057 while (pipe (evpipe)) 1409 while (pipe (evpipe))
1058 ev_syserr ("(libev) error creating signal/async pipe"); 1410 ev_syserr ("(libev) error creating signal/async pipe");
1059 1411
1060 fd_intern (evpipe [0]); 1412 fd_intern (evpipe [0]);
1061 fd_intern (evpipe [1]); 1413 fd_intern (evpipe [1]);
1062 ev_io_set (&pipeev, evpipe [0], EV_READ); 1414 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1063 } 1415 }
1064 1416
1065 ev_io_start (EV_A_ &pipeev); 1417 ev_io_start (EV_A_ &pipe_w);
1066 ev_unref (EV_A); /* watcher should not keep loop alive */ 1418 ev_unref (EV_A); /* watcher should not keep loop alive */
1067 } 1419 }
1068} 1420}
1069 1421
1070inline_size void 1422inline_speed void
1071evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1423evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1072{ 1424{
1073 if (!*flag) 1425 if (!*flag)
1074 { 1426 {
1075 int old_errno = errno; /* save errno because write might clobber it */
1076
1077 *flag = 1; 1427 *flag = 1;
1078 1428
1429 pipe_write_skipped = 1;
1430
1431 if (pipe_write_wanted)
1432 {
1433 int old_errno;
1434
1435 pipe_write_skipped = 0;
1436
1437 old_errno = errno; /* save errno because write will clobber it */
1438
1439#if EV_USE_EVENTFD
1440 if (evfd >= 0)
1441 {
1442 uint64_t counter = 1;
1443 write (evfd, &counter, sizeof (uint64_t));
1444 }
1445 else
1446#endif
1447 {
1448 /* win32 people keep sending patches that change this write() to send() */
1449 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1450 /* so when you think this write should be a send instead, please find out */
1451 /* where your send() is from - it's definitely not the microsoft send, and */
1452 /* tell me. thank you. */
1453 write (evpipe [1], &(evpipe [1]), 1);
1454 }
1455
1456 errno = old_errno;
1457 }
1458 }
1459}
1460
1461/* called whenever the libev signal pipe */
1462/* got some events (signal, async) */
1463static void
1464pipecb (EV_P_ ev_io *iow, int revents)
1465{
1466 int i;
1467
1468 if (revents & EV_READ)
1469 {
1079#if EV_USE_EVENTFD 1470#if EV_USE_EVENTFD
1080 if (evfd >= 0) 1471 if (evfd >= 0)
1081 { 1472 {
1082 uint64_t counter = 1; 1473 uint64_t counter;
1083 write (evfd, &counter, sizeof (uint64_t)); 1474 read (evfd, &counter, sizeof (uint64_t));
1084 } 1475 }
1085 else 1476 else
1086#endif 1477#endif
1087 write (evpipe [1], &old_errno, 1); 1478 {
1088
1089 errno = old_errno;
1090 }
1091}
1092
1093static void
1094pipecb (EV_P_ ev_io *iow, int revents)
1095{
1096#if EV_USE_EVENTFD
1097 if (evfd >= 0)
1098 {
1099 uint64_t counter;
1100 read (evfd, &counter, sizeof (uint64_t));
1101 }
1102 else
1103#endif
1104 {
1105 char dummy; 1479 char dummy;
1480 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1106 read (evpipe [0], &dummy, 1); 1481 read (evpipe [0], &dummy, 1);
1482 }
1483 }
1484
1485 pipe_write_skipped = 0;
1486
1487#if EV_SIGNAL_ENABLE
1488 if (sig_pending)
1107 } 1489 {
1490 sig_pending = 0;
1108 1491
1109 if (gotsig && ev_is_default_loop (EV_A)) 1492 for (i = EV_NSIG - 1; i--; )
1110 { 1493 if (expect_false (signals [i].pending))
1111 int signum;
1112 gotsig = 0;
1113
1114 for (signum = signalmax; signum--; )
1115 if (signals [signum].gotsig)
1116 ev_feed_signal_event (EV_A_ signum + 1); 1494 ev_feed_signal_event (EV_A_ i + 1);
1117 } 1495 }
1496#endif
1118 1497
1119#if EV_ASYNC_ENABLE 1498#if EV_ASYNC_ENABLE
1120 if (gotasync) 1499 if (async_pending)
1121 { 1500 {
1122 int i; 1501 async_pending = 0;
1123 gotasync = 0;
1124 1502
1125 for (i = asynccnt; i--; ) 1503 for (i = asynccnt; i--; )
1126 if (asyncs [i]->sent) 1504 if (asyncs [i]->sent)
1127 { 1505 {
1128 asyncs [i]->sent = 0; 1506 asyncs [i]->sent = 0;
… …
1132#endif 1510#endif
1133} 1511}
1134 1512
1135/*****************************************************************************/ 1513/*****************************************************************************/
1136 1514
1515void
1516ev_feed_signal (int signum)
1517{
1518#if EV_MULTIPLICITY
1519 EV_P = signals [signum - 1].loop;
1520
1521 if (!EV_A)
1522 return;
1523#endif
1524
1525 if (!ev_active (&pipe_w))
1526 return;
1527
1528 signals [signum - 1].pending = 1;
1529 evpipe_write (EV_A_ &sig_pending);
1530}
1531
1137static void 1532static void
1138ev_sighandler (int signum) 1533ev_sighandler (int signum)
1139{ 1534{
1140#if EV_MULTIPLICITY
1141 struct ev_loop *loop = &default_loop_struct;
1142#endif
1143
1144#if _WIN32 1535#ifdef _WIN32
1145 signal (signum, ev_sighandler); 1536 signal (signum, ev_sighandler);
1146#endif 1537#endif
1147 1538
1148 signals [signum - 1].gotsig = 1; 1539 ev_feed_signal (signum);
1149 evpipe_write (EV_A_ &gotsig);
1150} 1540}
1151 1541
1152void noinline 1542void noinline
1153ev_feed_signal_event (EV_P_ int signum) 1543ev_feed_signal_event (EV_P_ int signum)
1154{ 1544{
1155 WL w; 1545 WL w;
1156 1546
1547 if (expect_false (signum <= 0 || signum > EV_NSIG))
1548 return;
1549
1550 --signum;
1551
1157#if EV_MULTIPLICITY 1552#if EV_MULTIPLICITY
1158 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1553 /* it is permissible to try to feed a signal to the wrong loop */
1159#endif 1554 /* or, likely more useful, feeding a signal nobody is waiting for */
1160 1555
1161 --signum; 1556 if (expect_false (signals [signum].loop != EV_A))
1162
1163 if (signum < 0 || signum >= signalmax)
1164 return; 1557 return;
1558#endif
1165 1559
1166 signals [signum].gotsig = 0; 1560 signals [signum].pending = 0;
1167 1561
1168 for (w = signals [signum].head; w; w = w->next) 1562 for (w = signals [signum].head; w; w = w->next)
1169 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1563 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1170} 1564}
1171 1565
1566#if EV_USE_SIGNALFD
1567static void
1568sigfdcb (EV_P_ ev_io *iow, int revents)
1569{
1570 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1571
1572 for (;;)
1573 {
1574 ssize_t res = read (sigfd, si, sizeof (si));
1575
1576 /* not ISO-C, as res might be -1, but works with SuS */
1577 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1578 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1579
1580 if (res < (ssize_t)sizeof (si))
1581 break;
1582 }
1583}
1584#endif
1585
1586#endif
1587
1172/*****************************************************************************/ 1588/*****************************************************************************/
1173 1589
1590#if EV_CHILD_ENABLE
1174static WL childs [EV_PID_HASHSIZE]; 1591static WL childs [EV_PID_HASHSIZE];
1175
1176#ifndef _WIN32
1177 1592
1178static ev_signal childev; 1593static ev_signal childev;
1179 1594
1180#ifndef WIFCONTINUED 1595#ifndef WIFCONTINUED
1181# define WIFCONTINUED(status) 0 1596# define WIFCONTINUED(status) 0
1182#endif 1597#endif
1183 1598
1599/* handle a single child status event */
1184inline_speed void 1600inline_speed void
1185child_reap (EV_P_ int chain, int pid, int status) 1601child_reap (EV_P_ int chain, int pid, int status)
1186{ 1602{
1187 ev_child *w; 1603 ev_child *w;
1188 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1604 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1189 1605
1190 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1606 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1191 { 1607 {
1192 if ((w->pid == pid || !w->pid) 1608 if ((w->pid == pid || !w->pid)
1193 && (!traced || (w->flags & 1))) 1609 && (!traced || (w->flags & 1)))
1194 { 1610 {
1195 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1611 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1202 1618
1203#ifndef WCONTINUED 1619#ifndef WCONTINUED
1204# define WCONTINUED 0 1620# define WCONTINUED 0
1205#endif 1621#endif
1206 1622
1623/* called on sigchld etc., calls waitpid */
1207static void 1624static void
1208childcb (EV_P_ ev_signal *sw, int revents) 1625childcb (EV_P_ ev_signal *sw, int revents)
1209{ 1626{
1210 int pid, status; 1627 int pid, status;
1211 1628
… …
1219 /* make sure we are called again until all children have been reaped */ 1636 /* make sure we are called again until all children have been reaped */
1220 /* we need to do it this way so that the callback gets called before we continue */ 1637 /* we need to do it this way so that the callback gets called before we continue */
1221 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1638 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1222 1639
1223 child_reap (EV_A_ pid, pid, status); 1640 child_reap (EV_A_ pid, pid, status);
1224 if (EV_PID_HASHSIZE > 1) 1641 if ((EV_PID_HASHSIZE) > 1)
1225 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1642 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1226} 1643}
1227 1644
1228#endif 1645#endif
1229 1646
1230/*****************************************************************************/ 1647/*****************************************************************************/
1231 1648
1649#if EV_USE_IOCP
1650# include "ev_iocp.c"
1651#endif
1232#if EV_USE_PORT 1652#if EV_USE_PORT
1233# include "ev_port.c" 1653# include "ev_port.c"
1234#endif 1654#endif
1235#if EV_USE_KQUEUE 1655#if EV_USE_KQUEUE
1236# include "ev_kqueue.c" 1656# include "ev_kqueue.c"
… …
1243#endif 1663#endif
1244#if EV_USE_SELECT 1664#if EV_USE_SELECT
1245# include "ev_select.c" 1665# include "ev_select.c"
1246#endif 1666#endif
1247 1667
1248int 1668int ecb_cold
1249ev_version_major (void) 1669ev_version_major (void)
1250{ 1670{
1251 return EV_VERSION_MAJOR; 1671 return EV_VERSION_MAJOR;
1252} 1672}
1253 1673
1254int 1674int ecb_cold
1255ev_version_minor (void) 1675ev_version_minor (void)
1256{ 1676{
1257 return EV_VERSION_MINOR; 1677 return EV_VERSION_MINOR;
1258} 1678}
1259 1679
1260/* return true if we are running with elevated privileges and should ignore env variables */ 1680/* return true if we are running with elevated privileges and should ignore env variables */
1261int inline_size 1681int inline_size ecb_cold
1262enable_secure (void) 1682enable_secure (void)
1263{ 1683{
1264#ifdef _WIN32 1684#ifdef _WIN32
1265 return 0; 1685 return 0;
1266#else 1686#else
1267 return getuid () != geteuid () 1687 return getuid () != geteuid ()
1268 || getgid () != getegid (); 1688 || getgid () != getegid ();
1269#endif 1689#endif
1270} 1690}
1271 1691
1272unsigned int 1692unsigned int ecb_cold
1273ev_supported_backends (void) 1693ev_supported_backends (void)
1274{ 1694{
1275 unsigned int flags = 0; 1695 unsigned int flags = 0;
1276 1696
1277 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1697 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1281 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1701 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1282 1702
1283 return flags; 1703 return flags;
1284} 1704}
1285 1705
1286unsigned int 1706unsigned int ecb_cold
1287ev_recommended_backends (void) 1707ev_recommended_backends (void)
1288{ 1708{
1289 unsigned int flags = ev_supported_backends (); 1709 unsigned int flags = ev_supported_backends ();
1290 1710
1291#ifndef __NetBSD__ 1711#ifndef __NetBSD__
… …
1296#ifdef __APPLE__ 1716#ifdef __APPLE__
1297 /* only select works correctly on that "unix-certified" platform */ 1717 /* only select works correctly on that "unix-certified" platform */
1298 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1718 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1299 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1719 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1300#endif 1720#endif
1721#ifdef __FreeBSD__
1722 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1723#endif
1301 1724
1302 return flags; 1725 return flags;
1303} 1726}
1304 1727
1305unsigned int 1728unsigned int ecb_cold
1306ev_embeddable_backends (void) 1729ev_embeddable_backends (void)
1307{ 1730{
1308 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1731 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1309 1732
1310 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1733 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1311 /* please fix it and tell me how to detect the fix */ 1734 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1312 flags &= ~EVBACKEND_EPOLL; 1735 flags &= ~EVBACKEND_EPOLL;
1313 1736
1314 return flags; 1737 return flags;
1315} 1738}
1316 1739
1317unsigned int 1740unsigned int
1318ev_backend (EV_P) 1741ev_backend (EV_P)
1319{ 1742{
1320 return backend; 1743 return backend;
1321} 1744}
1322 1745
1746#if EV_FEATURE_API
1323unsigned int 1747unsigned int
1324ev_loop_count (EV_P) 1748ev_iteration (EV_P)
1325{ 1749{
1326 return loop_count; 1750 return loop_count;
1751}
1752
1753unsigned int
1754ev_depth (EV_P)
1755{
1756 return loop_depth;
1327} 1757}
1328 1758
1329void 1759void
1330ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1760ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1331{ 1761{
… …
1336ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1766ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1337{ 1767{
1338 timeout_blocktime = interval; 1768 timeout_blocktime = interval;
1339} 1769}
1340 1770
1771void
1772ev_set_userdata (EV_P_ void *data)
1773{
1774 userdata = data;
1775}
1776
1777void *
1778ev_userdata (EV_P)
1779{
1780 return userdata;
1781}
1782
1783void
1784ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1785{
1786 invoke_cb = invoke_pending_cb;
1787}
1788
1789void
1790ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1791{
1792 release_cb = release;
1793 acquire_cb = acquire;
1794}
1795#endif
1796
1797/* initialise a loop structure, must be zero-initialised */
1341static void noinline 1798static void noinline ecb_cold
1342loop_init (EV_P_ unsigned int flags) 1799loop_init (EV_P_ unsigned int flags)
1343{ 1800{
1344 if (!backend) 1801 if (!backend)
1345 { 1802 {
1803 origflags = flags;
1804
1346#if EV_USE_REALTIME 1805#if EV_USE_REALTIME
1347 if (!have_realtime) 1806 if (!have_realtime)
1348 { 1807 {
1349 struct timespec ts; 1808 struct timespec ts;
1350 1809
… …
1361 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1820 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1362 have_monotonic = 1; 1821 have_monotonic = 1;
1363 } 1822 }
1364#endif 1823#endif
1365 1824
1366 ev_rt_now = ev_time ();
1367 mn_now = get_clock ();
1368 now_floor = mn_now;
1369 rtmn_diff = ev_rt_now - mn_now;
1370
1371 io_blocktime = 0.;
1372 timeout_blocktime = 0.;
1373 backend = 0;
1374 backend_fd = -1;
1375 gotasync = 0;
1376#if EV_USE_INOTIFY
1377 fs_fd = -2;
1378#endif
1379
1380 /* pid check not overridable via env */ 1825 /* pid check not overridable via env */
1381#ifndef _WIN32 1826#ifndef _WIN32
1382 if (flags & EVFLAG_FORKCHECK) 1827 if (flags & EVFLAG_FORKCHECK)
1383 curpid = getpid (); 1828 curpid = getpid ();
1384#endif 1829#endif
… …
1386 if (!(flags & EVFLAG_NOENV) 1831 if (!(flags & EVFLAG_NOENV)
1387 && !enable_secure () 1832 && !enable_secure ()
1388 && getenv ("LIBEV_FLAGS")) 1833 && getenv ("LIBEV_FLAGS"))
1389 flags = atoi (getenv ("LIBEV_FLAGS")); 1834 flags = atoi (getenv ("LIBEV_FLAGS"));
1390 1835
1391 if (!(flags & 0x0000ffffU)) 1836 ev_rt_now = ev_time ();
1837 mn_now = get_clock ();
1838 now_floor = mn_now;
1839 rtmn_diff = ev_rt_now - mn_now;
1840#if EV_FEATURE_API
1841 invoke_cb = ev_invoke_pending;
1842#endif
1843
1844 io_blocktime = 0.;
1845 timeout_blocktime = 0.;
1846 backend = 0;
1847 backend_fd = -1;
1848 sig_pending = 0;
1849#if EV_ASYNC_ENABLE
1850 async_pending = 0;
1851#endif
1852 pipe_write_skipped = 0;
1853 pipe_write_wanted = 0;
1854#if EV_USE_INOTIFY
1855 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1856#endif
1857#if EV_USE_SIGNALFD
1858 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1859#endif
1860
1861 if (!(flags & EVBACKEND_MASK))
1392 flags |= ev_recommended_backends (); 1862 flags |= ev_recommended_backends ();
1393 1863
1864#if EV_USE_IOCP
1865 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1866#endif
1394#if EV_USE_PORT 1867#if EV_USE_PORT
1395 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1868 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1396#endif 1869#endif
1397#if EV_USE_KQUEUE 1870#if EV_USE_KQUEUE
1398 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1871 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1405#endif 1878#endif
1406#if EV_USE_SELECT 1879#if EV_USE_SELECT
1407 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1880 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1408#endif 1881#endif
1409 1882
1883 ev_prepare_init (&pending_w, pendingcb);
1884
1885#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1410 ev_init (&pipeev, pipecb); 1886 ev_init (&pipe_w, pipecb);
1411 ev_set_priority (&pipeev, EV_MAXPRI); 1887 ev_set_priority (&pipe_w, EV_MAXPRI);
1888#endif
1412 } 1889 }
1413} 1890}
1414 1891
1415static void noinline 1892/* free up a loop structure */
1893void ecb_cold
1416loop_destroy (EV_P) 1894ev_loop_destroy (EV_P)
1417{ 1895{
1418 int i; 1896 int i;
1419 1897
1898#if EV_MULTIPLICITY
1899 /* mimic free (0) */
1900 if (!EV_A)
1901 return;
1902#endif
1903
1904#if EV_CLEANUP_ENABLE
1905 /* queue cleanup watchers (and execute them) */
1906 if (expect_false (cleanupcnt))
1907 {
1908 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1909 EV_INVOKE_PENDING;
1910 }
1911#endif
1912
1913#if EV_CHILD_ENABLE
1914 if (ev_is_active (&childev))
1915 {
1916 ev_ref (EV_A); /* child watcher */
1917 ev_signal_stop (EV_A_ &childev);
1918 }
1919#endif
1920
1420 if (ev_is_active (&pipeev)) 1921 if (ev_is_active (&pipe_w))
1421 { 1922 {
1422 ev_ref (EV_A); /* signal watcher */ 1923 /*ev_ref (EV_A);*/
1423 ev_io_stop (EV_A_ &pipeev); 1924 /*ev_io_stop (EV_A_ &pipe_w);*/
1424 1925
1425#if EV_USE_EVENTFD 1926#if EV_USE_EVENTFD
1426 if (evfd >= 0) 1927 if (evfd >= 0)
1427 close (evfd); 1928 close (evfd);
1428#endif 1929#endif
1429 1930
1430 if (evpipe [0] >= 0) 1931 if (evpipe [0] >= 0)
1431 { 1932 {
1432 close (evpipe [0]); 1933 EV_WIN32_CLOSE_FD (evpipe [0]);
1433 close (evpipe [1]); 1934 EV_WIN32_CLOSE_FD (evpipe [1]);
1434 } 1935 }
1435 } 1936 }
1937
1938#if EV_USE_SIGNALFD
1939 if (ev_is_active (&sigfd_w))
1940 close (sigfd);
1941#endif
1436 1942
1437#if EV_USE_INOTIFY 1943#if EV_USE_INOTIFY
1438 if (fs_fd >= 0) 1944 if (fs_fd >= 0)
1439 close (fs_fd); 1945 close (fs_fd);
1440#endif 1946#endif
1441 1947
1442 if (backend_fd >= 0) 1948 if (backend_fd >= 0)
1443 close (backend_fd); 1949 close (backend_fd);
1444 1950
1951#if EV_USE_IOCP
1952 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1953#endif
1445#if EV_USE_PORT 1954#if EV_USE_PORT
1446 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1955 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1447#endif 1956#endif
1448#if EV_USE_KQUEUE 1957#if EV_USE_KQUEUE
1449 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1958 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1464#if EV_IDLE_ENABLE 1973#if EV_IDLE_ENABLE
1465 array_free (idle, [i]); 1974 array_free (idle, [i]);
1466#endif 1975#endif
1467 } 1976 }
1468 1977
1469 ev_free (anfds); anfdmax = 0; 1978 ev_free (anfds); anfds = 0; anfdmax = 0;
1470 1979
1471 /* have to use the microsoft-never-gets-it-right macro */ 1980 /* have to use the microsoft-never-gets-it-right macro */
1472 array_free (rfeed, EMPTY); 1981 array_free (rfeed, EMPTY);
1473 array_free (fdchange, EMPTY); 1982 array_free (fdchange, EMPTY);
1474 array_free (timer, EMPTY); 1983 array_free (timer, EMPTY);
… …
1476 array_free (periodic, EMPTY); 1985 array_free (periodic, EMPTY);
1477#endif 1986#endif
1478#if EV_FORK_ENABLE 1987#if EV_FORK_ENABLE
1479 array_free (fork, EMPTY); 1988 array_free (fork, EMPTY);
1480#endif 1989#endif
1990#if EV_CLEANUP_ENABLE
1991 array_free (cleanup, EMPTY);
1992#endif
1481 array_free (prepare, EMPTY); 1993 array_free (prepare, EMPTY);
1482 array_free (check, EMPTY); 1994 array_free (check, EMPTY);
1483#if EV_ASYNC_ENABLE 1995#if EV_ASYNC_ENABLE
1484 array_free (async, EMPTY); 1996 array_free (async, EMPTY);
1485#endif 1997#endif
1486 1998
1487 backend = 0; 1999 backend = 0;
2000
2001#if EV_MULTIPLICITY
2002 if (ev_is_default_loop (EV_A))
2003#endif
2004 ev_default_loop_ptr = 0;
2005#if EV_MULTIPLICITY
2006 else
2007 ev_free (EV_A);
2008#endif
1488} 2009}
1489 2010
1490#if EV_USE_INOTIFY 2011#if EV_USE_INOTIFY
1491inline_size void infy_fork (EV_P); 2012inline_size void infy_fork (EV_P);
1492#endif 2013#endif
… …
1505#endif 2026#endif
1506#if EV_USE_INOTIFY 2027#if EV_USE_INOTIFY
1507 infy_fork (EV_A); 2028 infy_fork (EV_A);
1508#endif 2029#endif
1509 2030
1510 if (ev_is_active (&pipeev)) 2031 if (ev_is_active (&pipe_w))
1511 { 2032 {
1512 /* this "locks" the handlers against writing to the pipe */ 2033 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1513 /* while we modify the fd vars */
1514 gotsig = 1;
1515#if EV_ASYNC_ENABLE
1516 gotasync = 1;
1517#endif
1518 2034
1519 ev_ref (EV_A); 2035 ev_ref (EV_A);
1520 ev_io_stop (EV_A_ &pipeev); 2036 ev_io_stop (EV_A_ &pipe_w);
1521 2037
1522#if EV_USE_EVENTFD 2038#if EV_USE_EVENTFD
1523 if (evfd >= 0) 2039 if (evfd >= 0)
1524 close (evfd); 2040 close (evfd);
1525#endif 2041#endif
1526 2042
1527 if (evpipe [0] >= 0) 2043 if (evpipe [0] >= 0)
1528 { 2044 {
1529 close (evpipe [0]); 2045 EV_WIN32_CLOSE_FD (evpipe [0]);
1530 close (evpipe [1]); 2046 EV_WIN32_CLOSE_FD (evpipe [1]);
1531 } 2047 }
1532 2048
2049#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1533 evpipe_init (EV_A); 2050 evpipe_init (EV_A);
1534 /* now iterate over everything, in case we missed something */ 2051 /* now iterate over everything, in case we missed something */
1535 pipecb (EV_A_ &pipeev, EV_READ); 2052 pipecb (EV_A_ &pipe_w, EV_READ);
2053#endif
1536 } 2054 }
1537 2055
1538 postfork = 0; 2056 postfork = 0;
1539} 2057}
1540 2058
1541#if EV_MULTIPLICITY 2059#if EV_MULTIPLICITY
1542 2060
1543struct ev_loop * 2061struct ev_loop * ecb_cold
1544ev_loop_new (unsigned int flags) 2062ev_loop_new (unsigned int flags)
1545{ 2063{
1546 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2064 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1547 2065
1548 memset (loop, 0, sizeof (struct ev_loop)); 2066 memset (EV_A, 0, sizeof (struct ev_loop));
1549
1550 loop_init (EV_A_ flags); 2067 loop_init (EV_A_ flags);
1551 2068
1552 if (ev_backend (EV_A)) 2069 if (ev_backend (EV_A))
1553 return loop; 2070 return EV_A;
1554 2071
2072 ev_free (EV_A);
1555 return 0; 2073 return 0;
1556} 2074}
1557 2075
1558void 2076#endif /* multiplicity */
1559ev_loop_destroy (EV_P)
1560{
1561 loop_destroy (EV_A);
1562 ev_free (loop);
1563}
1564
1565void
1566ev_loop_fork (EV_P)
1567{
1568 postfork = 1; /* must be in line with ev_default_fork */
1569}
1570 2077
1571#if EV_VERIFY 2078#if EV_VERIFY
1572static void noinline 2079static void noinline ecb_cold
1573verify_watcher (EV_P_ W w) 2080verify_watcher (EV_P_ W w)
1574{ 2081{
1575 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2082 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1576 2083
1577 if (w->pending) 2084 if (w->pending)
1578 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2085 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1579} 2086}
1580 2087
1581static void noinline 2088static void noinline ecb_cold
1582verify_heap (EV_P_ ANHE *heap, int N) 2089verify_heap (EV_P_ ANHE *heap, int N)
1583{ 2090{
1584 int i; 2091 int i;
1585 2092
1586 for (i = HEAP0; i < N + HEAP0; ++i) 2093 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1591 2098
1592 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2099 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1593 } 2100 }
1594} 2101}
1595 2102
1596static void noinline 2103static void noinline ecb_cold
1597array_verify (EV_P_ W *ws, int cnt) 2104array_verify (EV_P_ W *ws, int cnt)
1598{ 2105{
1599 while (cnt--) 2106 while (cnt--)
1600 { 2107 {
1601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2108 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1602 verify_watcher (EV_A_ ws [cnt]); 2109 verify_watcher (EV_A_ ws [cnt]);
1603 } 2110 }
1604} 2111}
1605#endif 2112#endif
1606 2113
1607void 2114#if EV_FEATURE_API
2115void ecb_cold
1608ev_loop_verify (EV_P) 2116ev_verify (EV_P)
1609{ 2117{
1610#if EV_VERIFY 2118#if EV_VERIFY
1611 int i; 2119 int i;
1612 WL w; 2120 WL w;
1613 2121
… …
1647#if EV_FORK_ENABLE 2155#if EV_FORK_ENABLE
1648 assert (forkmax >= forkcnt); 2156 assert (forkmax >= forkcnt);
1649 array_verify (EV_A_ (W *)forks, forkcnt); 2157 array_verify (EV_A_ (W *)forks, forkcnt);
1650#endif 2158#endif
1651 2159
2160#if EV_CLEANUP_ENABLE
2161 assert (cleanupmax >= cleanupcnt);
2162 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2163#endif
2164
1652#if EV_ASYNC_ENABLE 2165#if EV_ASYNC_ENABLE
1653 assert (asyncmax >= asynccnt); 2166 assert (asyncmax >= asynccnt);
1654 array_verify (EV_A_ (W *)asyncs, asynccnt); 2167 array_verify (EV_A_ (W *)asyncs, asynccnt);
1655#endif 2168#endif
1656 2169
2170#if EV_PREPARE_ENABLE
1657 assert (preparemax >= preparecnt); 2171 assert (preparemax >= preparecnt);
1658 array_verify (EV_A_ (W *)prepares, preparecnt); 2172 array_verify (EV_A_ (W *)prepares, preparecnt);
2173#endif
1659 2174
2175#if EV_CHECK_ENABLE
1660 assert (checkmax >= checkcnt); 2176 assert (checkmax >= checkcnt);
1661 array_verify (EV_A_ (W *)checks, checkcnt); 2177 array_verify (EV_A_ (W *)checks, checkcnt);
2178#endif
1662 2179
1663# if 0 2180# if 0
2181#if EV_CHILD_ENABLE
1664 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2182 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1665 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2183 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2184#endif
1666# endif 2185# endif
1667#endif 2186#endif
1668} 2187}
1669 2188#endif
1670#endif /* multiplicity */
1671 2189
1672#if EV_MULTIPLICITY 2190#if EV_MULTIPLICITY
1673struct ev_loop * 2191struct ev_loop * ecb_cold
1674ev_default_loop_init (unsigned int flags)
1675#else 2192#else
1676int 2193int
2194#endif
1677ev_default_loop (unsigned int flags) 2195ev_default_loop (unsigned int flags)
1678#endif
1679{ 2196{
1680 if (!ev_default_loop_ptr) 2197 if (!ev_default_loop_ptr)
1681 { 2198 {
1682#if EV_MULTIPLICITY 2199#if EV_MULTIPLICITY
1683 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2200 EV_P = ev_default_loop_ptr = &default_loop_struct;
1684#else 2201#else
1685 ev_default_loop_ptr = 1; 2202 ev_default_loop_ptr = 1;
1686#endif 2203#endif
1687 2204
1688 loop_init (EV_A_ flags); 2205 loop_init (EV_A_ flags);
1689 2206
1690 if (ev_backend (EV_A)) 2207 if (ev_backend (EV_A))
1691 { 2208 {
1692#ifndef _WIN32 2209#if EV_CHILD_ENABLE
1693 ev_signal_init (&childev, childcb, SIGCHLD); 2210 ev_signal_init (&childev, childcb, SIGCHLD);
1694 ev_set_priority (&childev, EV_MAXPRI); 2211 ev_set_priority (&childev, EV_MAXPRI);
1695 ev_signal_start (EV_A_ &childev); 2212 ev_signal_start (EV_A_ &childev);
1696 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2213 ev_unref (EV_A); /* child watcher should not keep loop alive */
1697#endif 2214#endif
… …
1702 2219
1703 return ev_default_loop_ptr; 2220 return ev_default_loop_ptr;
1704} 2221}
1705 2222
1706void 2223void
1707ev_default_destroy (void) 2224ev_loop_fork (EV_P)
1708{ 2225{
1709#if EV_MULTIPLICITY
1710 struct ev_loop *loop = ev_default_loop_ptr;
1711#endif
1712
1713 ev_default_loop_ptr = 0;
1714
1715#ifndef _WIN32
1716 ev_ref (EV_A); /* child watcher */
1717 ev_signal_stop (EV_A_ &childev);
1718#endif
1719
1720 loop_destroy (EV_A);
1721}
1722
1723void
1724ev_default_fork (void)
1725{
1726#if EV_MULTIPLICITY
1727 struct ev_loop *loop = ev_default_loop_ptr;
1728#endif
1729
1730 postfork = 1; /* must be in line with ev_loop_fork */ 2226 postfork = 1; /* must be in line with ev_default_fork */
1731} 2227}
1732 2228
1733/*****************************************************************************/ 2229/*****************************************************************************/
1734 2230
1735void 2231void
1736ev_invoke (EV_P_ void *w, int revents) 2232ev_invoke (EV_P_ void *w, int revents)
1737{ 2233{
1738 EV_CB_INVOKE ((W)w, revents); 2234 EV_CB_INVOKE ((W)w, revents);
1739} 2235}
1740 2236
1741inline_speed void 2237unsigned int
1742call_pending (EV_P) 2238ev_pending_count (EV_P)
2239{
2240 int pri;
2241 unsigned int count = 0;
2242
2243 for (pri = NUMPRI; pri--; )
2244 count += pendingcnt [pri];
2245
2246 return count;
2247}
2248
2249void noinline
2250ev_invoke_pending (EV_P)
1743{ 2251{
1744 int pri; 2252 int pri;
1745 2253
1746 for (pri = NUMPRI; pri--; ) 2254 for (pri = NUMPRI; pri--; )
1747 while (pendingcnt [pri]) 2255 while (pendingcnt [pri])
1748 { 2256 {
1749 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2257 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1750 2258
1751 if (expect_true (p->w))
1752 {
1753 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1754
1755 p->w->pending = 0; 2259 p->w->pending = 0;
1756 EV_CB_INVOKE (p->w, p->events); 2260 EV_CB_INVOKE (p->w, p->events);
1757 EV_FREQUENT_CHECK; 2261 EV_FREQUENT_CHECK;
1758 }
1759 } 2262 }
1760} 2263}
1761 2264
1762#if EV_IDLE_ENABLE 2265#if EV_IDLE_ENABLE
2266/* make idle watchers pending. this handles the "call-idle */
2267/* only when higher priorities are idle" logic */
1763inline_size void 2268inline_size void
1764idle_reify (EV_P) 2269idle_reify (EV_P)
1765{ 2270{
1766 if (expect_false (idleall)) 2271 if (expect_false (idleall))
1767 { 2272 {
… …
1780 } 2285 }
1781 } 2286 }
1782} 2287}
1783#endif 2288#endif
1784 2289
2290/* make timers pending */
1785inline_size void 2291inline_size void
1786timers_reify (EV_P) 2292timers_reify (EV_P)
1787{ 2293{
1788 EV_FREQUENT_CHECK; 2294 EV_FREQUENT_CHECK;
1789 2295
… …
1813 EV_FREQUENT_CHECK; 2319 EV_FREQUENT_CHECK;
1814 feed_reverse (EV_A_ (W)w); 2320 feed_reverse (EV_A_ (W)w);
1815 } 2321 }
1816 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2322 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1817 2323
1818 feed_reverse_done (EV_A_ EV_TIMEOUT); 2324 feed_reverse_done (EV_A_ EV_TIMER);
1819 } 2325 }
1820} 2326}
1821 2327
1822#if EV_PERIODIC_ENABLE 2328#if EV_PERIODIC_ENABLE
2329
2330static void noinline
2331periodic_recalc (EV_P_ ev_periodic *w)
2332{
2333 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2334 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2335
2336 /* the above almost always errs on the low side */
2337 while (at <= ev_rt_now)
2338 {
2339 ev_tstamp nat = at + w->interval;
2340
2341 /* when resolution fails us, we use ev_rt_now */
2342 if (expect_false (nat == at))
2343 {
2344 at = ev_rt_now;
2345 break;
2346 }
2347
2348 at = nat;
2349 }
2350
2351 ev_at (w) = at;
2352}
2353
2354/* make periodics pending */
1823inline_size void 2355inline_size void
1824periodics_reify (EV_P) 2356periodics_reify (EV_P)
1825{ 2357{
1826 EV_FREQUENT_CHECK; 2358 EV_FREQUENT_CHECK;
1827 2359
… …
1845 ANHE_at_cache (periodics [HEAP0]); 2377 ANHE_at_cache (periodics [HEAP0]);
1846 downheap (periodics, periodiccnt, HEAP0); 2378 downheap (periodics, periodiccnt, HEAP0);
1847 } 2379 }
1848 else if (w->interval) 2380 else if (w->interval)
1849 { 2381 {
1850 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2382 periodic_recalc (EV_A_ w);
1851 /* if next trigger time is not sufficiently in the future, put it there */
1852 /* this might happen because of floating point inexactness */
1853 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1854 {
1855 ev_at (w) += w->interval;
1856
1857 /* if interval is unreasonably low we might still have a time in the past */
1858 /* so correct this. this will make the periodic very inexact, but the user */
1859 /* has effectively asked to get triggered more often than possible */
1860 if (ev_at (w) < ev_rt_now)
1861 ev_at (w) = ev_rt_now;
1862 }
1863
1864 ANHE_at_cache (periodics [HEAP0]); 2383 ANHE_at_cache (periodics [HEAP0]);
1865 downheap (periodics, periodiccnt, HEAP0); 2384 downheap (periodics, periodiccnt, HEAP0);
1866 } 2385 }
1867 else 2386 else
1868 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2387 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1874 2393
1875 feed_reverse_done (EV_A_ EV_PERIODIC); 2394 feed_reverse_done (EV_A_ EV_PERIODIC);
1876 } 2395 }
1877} 2396}
1878 2397
2398/* simply recalculate all periodics */
2399/* TODO: maybe ensure that at least one event happens when jumping forward? */
1879static void noinline 2400static void noinline ecb_cold
1880periodics_reschedule (EV_P) 2401periodics_reschedule (EV_P)
1881{ 2402{
1882 int i; 2403 int i;
1883 2404
1884 /* adjust periodics after time jump */ 2405 /* adjust periodics after time jump */
… …
1887 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2408 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1888 2409
1889 if (w->reschedule_cb) 2410 if (w->reschedule_cb)
1890 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2411 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1891 else if (w->interval) 2412 else if (w->interval)
1892 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2413 periodic_recalc (EV_A_ w);
1893 2414
1894 ANHE_at_cache (periodics [i]); 2415 ANHE_at_cache (periodics [i]);
1895 } 2416 }
1896 2417
1897 reheap (periodics, periodiccnt); 2418 reheap (periodics, periodiccnt);
1898} 2419}
1899#endif 2420#endif
1900 2421
2422/* adjust all timers by a given offset */
1901static void noinline 2423static void noinline ecb_cold
1902timers_reschedule (EV_P_ ev_tstamp adjust) 2424timers_reschedule (EV_P_ ev_tstamp adjust)
1903{ 2425{
1904 int i; 2426 int i;
1905 2427
1906 for (i = 0; i < timercnt; ++i) 2428 for (i = 0; i < timercnt; ++i)
… …
1909 ANHE_w (*he)->at += adjust; 2431 ANHE_w (*he)->at += adjust;
1910 ANHE_at_cache (*he); 2432 ANHE_at_cache (*he);
1911 } 2433 }
1912} 2434}
1913 2435
2436/* fetch new monotonic and realtime times from the kernel */
2437/* also detect if there was a timejump, and act accordingly */
1914inline_speed void 2438inline_speed void
1915time_update (EV_P_ ev_tstamp max_block) 2439time_update (EV_P_ ev_tstamp max_block)
1916{ 2440{
1917 int i;
1918
1919#if EV_USE_MONOTONIC 2441#if EV_USE_MONOTONIC
1920 if (expect_true (have_monotonic)) 2442 if (expect_true (have_monotonic))
1921 { 2443 {
2444 int i;
1922 ev_tstamp odiff = rtmn_diff; 2445 ev_tstamp odiff = rtmn_diff;
1923 2446
1924 mn_now = get_clock (); 2447 mn_now = get_clock ();
1925 2448
1926 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2449 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1942 * doesn't hurt either as we only do this on time-jumps or 2465 * doesn't hurt either as we only do this on time-jumps or
1943 * in the unlikely event of having been preempted here. 2466 * in the unlikely event of having been preempted here.
1944 */ 2467 */
1945 for (i = 4; --i; ) 2468 for (i = 4; --i; )
1946 { 2469 {
2470 ev_tstamp diff;
1947 rtmn_diff = ev_rt_now - mn_now; 2471 rtmn_diff = ev_rt_now - mn_now;
1948 2472
2473 diff = odiff - rtmn_diff;
2474
1949 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2475 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1950 return; /* all is well */ 2476 return; /* all is well */
1951 2477
1952 ev_rt_now = ev_time (); 2478 ev_rt_now = ev_time ();
1953 mn_now = get_clock (); 2479 mn_now = get_clock ();
1954 now_floor = mn_now; 2480 now_floor = mn_now;
… …
1976 2502
1977 mn_now = ev_rt_now; 2503 mn_now = ev_rt_now;
1978 } 2504 }
1979} 2505}
1980 2506
1981static int loop_done;
1982
1983void 2507void
1984ev_loop (EV_P_ int flags) 2508ev_run (EV_P_ int flags)
1985{ 2509{
2510#if EV_FEATURE_API
2511 ++loop_depth;
2512#endif
2513
2514 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2515
1986 loop_done = EVUNLOOP_CANCEL; 2516 loop_done = EVBREAK_CANCEL;
1987 2517
1988 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2518 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1989 2519
1990 do 2520 do
1991 { 2521 {
1992#if EV_VERIFY >= 2 2522#if EV_VERIFY >= 2
1993 ev_loop_verify (EV_A); 2523 ev_verify (EV_A);
1994#endif 2524#endif
1995 2525
1996#ifndef _WIN32 2526#ifndef _WIN32
1997 if (expect_false (curpid)) /* penalise the forking check even more */ 2527 if (expect_false (curpid)) /* penalise the forking check even more */
1998 if (expect_false (getpid () != curpid)) 2528 if (expect_false (getpid () != curpid))
… …
2006 /* we might have forked, so queue fork handlers */ 2536 /* we might have forked, so queue fork handlers */
2007 if (expect_false (postfork)) 2537 if (expect_false (postfork))
2008 if (forkcnt) 2538 if (forkcnt)
2009 { 2539 {
2010 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2540 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2011 call_pending (EV_A); 2541 EV_INVOKE_PENDING;
2012 } 2542 }
2013#endif 2543#endif
2014 2544
2545#if EV_PREPARE_ENABLE
2015 /* queue prepare watchers (and execute them) */ 2546 /* queue prepare watchers (and execute them) */
2016 if (expect_false (preparecnt)) 2547 if (expect_false (preparecnt))
2017 { 2548 {
2018 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2549 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2019 call_pending (EV_A); 2550 EV_INVOKE_PENDING;
2020 } 2551 }
2552#endif
2553
2554 if (expect_false (loop_done))
2555 break;
2021 2556
2022 /* we might have forked, so reify kernel state if necessary */ 2557 /* we might have forked, so reify kernel state if necessary */
2023 if (expect_false (postfork)) 2558 if (expect_false (postfork))
2024 loop_fork (EV_A); 2559 loop_fork (EV_A);
2025 2560
… …
2029 /* calculate blocking time */ 2564 /* calculate blocking time */
2030 { 2565 {
2031 ev_tstamp waittime = 0.; 2566 ev_tstamp waittime = 0.;
2032 ev_tstamp sleeptime = 0.; 2567 ev_tstamp sleeptime = 0.;
2033 2568
2569 /* remember old timestamp for io_blocktime calculation */
2570 ev_tstamp prev_mn_now = mn_now;
2571
2572 /* update time to cancel out callback processing overhead */
2573 time_update (EV_A_ 1e100);
2574
2575 /* from now on, we want a pipe-wake-up */
2576 pipe_write_wanted = 1;
2577
2034 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2578 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2035 { 2579 {
2036 /* update time to cancel out callback processing overhead */ 2580 waittime = MAX_BLOCKTIME;
2037 time_update (EV_A_ 1e100);
2038 2581
2039 if (timercnt) 2582 if (timercnt)
2040 { 2583 {
2041 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2584 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2042 if (waittime > to) waittime = to; 2585 if (waittime > to) waittime = to;
2043 } 2586 }
2044 2587
2045#if EV_PERIODIC_ENABLE 2588#if EV_PERIODIC_ENABLE
2046 if (periodiccnt) 2589 if (periodiccnt)
2047 { 2590 {
2048 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2591 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2049 if (waittime > to) waittime = to; 2592 if (waittime > to) waittime = to;
2050 } 2593 }
2051#endif 2594#endif
2052 2595
2596 /* don't let timeouts decrease the waittime below timeout_blocktime */
2053 if (expect_false (waittime < timeout_blocktime)) 2597 if (expect_false (waittime < timeout_blocktime))
2054 waittime = timeout_blocktime; 2598 waittime = timeout_blocktime;
2055 2599
2056 sleeptime = waittime - backend_fudge; 2600 /* at this point, we NEED to wait, so we have to ensure */
2601 /* to pass a minimum nonzero value to the backend */
2602 if (expect_false (waittime < backend_mintime))
2603 waittime = backend_mintime;
2057 2604
2605 /* extra check because io_blocktime is commonly 0 */
2058 if (expect_true (sleeptime > io_blocktime)) 2606 if (expect_false (io_blocktime))
2059 sleeptime = io_blocktime;
2060
2061 if (sleeptime)
2062 { 2607 {
2608 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2609
2610 if (sleeptime > waittime - backend_mintime)
2611 sleeptime = waittime - backend_mintime;
2612
2613 if (expect_true (sleeptime > 0.))
2614 {
2063 ev_sleep (sleeptime); 2615 ev_sleep (sleeptime);
2064 waittime -= sleeptime; 2616 waittime -= sleeptime;
2617 }
2065 } 2618 }
2066 } 2619 }
2067 2620
2621#if EV_FEATURE_API
2068 ++loop_count; 2622 ++loop_count;
2623#endif
2624 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2069 backend_poll (EV_A_ waittime); 2625 backend_poll (EV_A_ waittime);
2626 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2627
2628 pipe_write_wanted = 0;
2629
2630 if (pipe_write_skipped)
2631 {
2632 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2633 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2634 }
2635
2070 2636
2071 /* update ev_rt_now, do magic */ 2637 /* update ev_rt_now, do magic */
2072 time_update (EV_A_ waittime + sleeptime); 2638 time_update (EV_A_ waittime + sleeptime);
2073 } 2639 }
2074 2640
… …
2081#if EV_IDLE_ENABLE 2647#if EV_IDLE_ENABLE
2082 /* queue idle watchers unless other events are pending */ 2648 /* queue idle watchers unless other events are pending */
2083 idle_reify (EV_A); 2649 idle_reify (EV_A);
2084#endif 2650#endif
2085 2651
2652#if EV_CHECK_ENABLE
2086 /* queue check watchers, to be executed first */ 2653 /* queue check watchers, to be executed first */
2087 if (expect_false (checkcnt)) 2654 if (expect_false (checkcnt))
2088 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2655 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2656#endif
2089 2657
2090 call_pending (EV_A); 2658 EV_INVOKE_PENDING;
2091 } 2659 }
2092 while (expect_true ( 2660 while (expect_true (
2093 activecnt 2661 activecnt
2094 && !loop_done 2662 && !loop_done
2095 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2663 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2096 )); 2664 ));
2097 2665
2098 if (loop_done == EVUNLOOP_ONE) 2666 if (loop_done == EVBREAK_ONE)
2099 loop_done = EVUNLOOP_CANCEL; 2667 loop_done = EVBREAK_CANCEL;
2668
2669#if EV_FEATURE_API
2670 --loop_depth;
2671#endif
2100} 2672}
2101 2673
2102void 2674void
2103ev_unloop (EV_P_ int how) 2675ev_break (EV_P_ int how)
2104{ 2676{
2105 loop_done = how; 2677 loop_done = how;
2106} 2678}
2107 2679
2108void 2680void
… …
2135 ev_tstamp mn_prev = mn_now; 2707 ev_tstamp mn_prev = mn_now;
2136 2708
2137 ev_now_update (EV_A); 2709 ev_now_update (EV_A);
2138 timers_reschedule (EV_A_ mn_now - mn_prev); 2710 timers_reschedule (EV_A_ mn_now - mn_prev);
2139#if EV_PERIODIC_ENABLE 2711#if EV_PERIODIC_ENABLE
2712 /* TODO: really do this? */
2140 periodics_reschedule (EV_A); 2713 periodics_reschedule (EV_A);
2141#endif 2714#endif
2142} 2715}
2143 2716
2144/*****************************************************************************/ 2717/*****************************************************************************/
2718/* singly-linked list management, used when the expected list length is short */
2145 2719
2146inline_size void 2720inline_size void
2147wlist_add (WL *head, WL elem) 2721wlist_add (WL *head, WL elem)
2148{ 2722{
2149 elem->next = *head; 2723 elem->next = *head;
… …
2153inline_size void 2727inline_size void
2154wlist_del (WL *head, WL elem) 2728wlist_del (WL *head, WL elem)
2155{ 2729{
2156 while (*head) 2730 while (*head)
2157 { 2731 {
2158 if (*head == elem) 2732 if (expect_true (*head == elem))
2159 { 2733 {
2160 *head = elem->next; 2734 *head = elem->next;
2161 return; 2735 break;
2162 } 2736 }
2163 2737
2164 head = &(*head)->next; 2738 head = &(*head)->next;
2165 } 2739 }
2166} 2740}
2167 2741
2742/* internal, faster, version of ev_clear_pending */
2168inline_speed void 2743inline_speed void
2169clear_pending (EV_P_ W w) 2744clear_pending (EV_P_ W w)
2170{ 2745{
2171 if (w->pending) 2746 if (w->pending)
2172 { 2747 {
2173 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2748 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2174 w->pending = 0; 2749 w->pending = 0;
2175 } 2750 }
2176} 2751}
2177 2752
2178int 2753int
… …
2182 int pending = w_->pending; 2757 int pending = w_->pending;
2183 2758
2184 if (expect_true (pending)) 2759 if (expect_true (pending))
2185 { 2760 {
2186 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2761 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2762 p->w = (W)&pending_w;
2187 w_->pending = 0; 2763 w_->pending = 0;
2188 p->w = 0;
2189 return p->events; 2764 return p->events;
2190 } 2765 }
2191 else 2766 else
2192 return 0; 2767 return 0;
2193} 2768}
2194 2769
2195inline_size void 2770inline_size void
2196pri_adjust (EV_P_ W w) 2771pri_adjust (EV_P_ W w)
2197{ 2772{
2198 int pri = w->priority; 2773 int pri = ev_priority (w);
2199 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2774 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2200 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2775 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2201 w->priority = pri; 2776 ev_set_priority (w, pri);
2202} 2777}
2203 2778
2204inline_speed void 2779inline_speed void
2205ev_start (EV_P_ W w, int active) 2780ev_start (EV_P_ W w, int active)
2206{ 2781{
… …
2225 2800
2226 if (expect_false (ev_is_active (w))) 2801 if (expect_false (ev_is_active (w)))
2227 return; 2802 return;
2228 2803
2229 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2804 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2230 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2805 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2231 2806
2232 EV_FREQUENT_CHECK; 2807 EV_FREQUENT_CHECK;
2233 2808
2234 ev_start (EV_A_ (W)w, 1); 2809 ev_start (EV_A_ (W)w, 1);
2235 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2810 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2236 wlist_add (&anfds[fd].head, (WL)w); 2811 wlist_add (&anfds[fd].head, (WL)w);
2237 2812
2238 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 2813 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2239 w->events &= ~EV__IOFDSET; 2814 w->events &= ~EV__IOFDSET;
2240 2815
2241 EV_FREQUENT_CHECK; 2816 EV_FREQUENT_CHECK;
2242} 2817}
2243 2818
… …
2253 EV_FREQUENT_CHECK; 2828 EV_FREQUENT_CHECK;
2254 2829
2255 wlist_del (&anfds[w->fd].head, (WL)w); 2830 wlist_del (&anfds[w->fd].head, (WL)w);
2256 ev_stop (EV_A_ (W)w); 2831 ev_stop (EV_A_ (W)w);
2257 2832
2258 fd_change (EV_A_ w->fd, 1); 2833 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2259 2834
2260 EV_FREQUENT_CHECK; 2835 EV_FREQUENT_CHECK;
2261} 2836}
2262 2837
2263void noinline 2838void noinline
… …
2305 timers [active] = timers [timercnt + HEAP0]; 2880 timers [active] = timers [timercnt + HEAP0];
2306 adjustheap (timers, timercnt, active); 2881 adjustheap (timers, timercnt, active);
2307 } 2882 }
2308 } 2883 }
2309 2884
2310 EV_FREQUENT_CHECK;
2311
2312 ev_at (w) -= mn_now; 2885 ev_at (w) -= mn_now;
2313 2886
2314 ev_stop (EV_A_ (W)w); 2887 ev_stop (EV_A_ (W)w);
2888
2889 EV_FREQUENT_CHECK;
2315} 2890}
2316 2891
2317void noinline 2892void noinline
2318ev_timer_again (EV_P_ ev_timer *w) 2893ev_timer_again (EV_P_ ev_timer *w)
2319{ 2894{
… …
2337 } 2912 }
2338 2913
2339 EV_FREQUENT_CHECK; 2914 EV_FREQUENT_CHECK;
2340} 2915}
2341 2916
2917ev_tstamp
2918ev_timer_remaining (EV_P_ ev_timer *w)
2919{
2920 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2921}
2922
2342#if EV_PERIODIC_ENABLE 2923#if EV_PERIODIC_ENABLE
2343void noinline 2924void noinline
2344ev_periodic_start (EV_P_ ev_periodic *w) 2925ev_periodic_start (EV_P_ ev_periodic *w)
2345{ 2926{
2346 if (expect_false (ev_is_active (w))) 2927 if (expect_false (ev_is_active (w)))
… …
2349 if (w->reschedule_cb) 2930 if (w->reschedule_cb)
2350 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2931 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2351 else if (w->interval) 2932 else if (w->interval)
2352 { 2933 {
2353 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2934 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2354 /* this formula differs from the one in periodic_reify because we do not always round up */ 2935 periodic_recalc (EV_A_ w);
2355 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2356 } 2936 }
2357 else 2937 else
2358 ev_at (w) = w->offset; 2938 ev_at (w) = w->offset;
2359 2939
2360 EV_FREQUENT_CHECK; 2940 EV_FREQUENT_CHECK;
… …
2392 periodics [active] = periodics [periodiccnt + HEAP0]; 2972 periodics [active] = periodics [periodiccnt + HEAP0];
2393 adjustheap (periodics, periodiccnt, active); 2973 adjustheap (periodics, periodiccnt, active);
2394 } 2974 }
2395 } 2975 }
2396 2976
2397 EV_FREQUENT_CHECK;
2398
2399 ev_stop (EV_A_ (W)w); 2977 ev_stop (EV_A_ (W)w);
2978
2979 EV_FREQUENT_CHECK;
2400} 2980}
2401 2981
2402void noinline 2982void noinline
2403ev_periodic_again (EV_P_ ev_periodic *w) 2983ev_periodic_again (EV_P_ ev_periodic *w)
2404{ 2984{
… …
2410 2990
2411#ifndef SA_RESTART 2991#ifndef SA_RESTART
2412# define SA_RESTART 0 2992# define SA_RESTART 0
2413#endif 2993#endif
2414 2994
2995#if EV_SIGNAL_ENABLE
2996
2415void noinline 2997void noinline
2416ev_signal_start (EV_P_ ev_signal *w) 2998ev_signal_start (EV_P_ ev_signal *w)
2417{ 2999{
2418#if EV_MULTIPLICITY
2419 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2420#endif
2421 if (expect_false (ev_is_active (w))) 3000 if (expect_false (ev_is_active (w)))
2422 return; 3001 return;
2423 3002
2424 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3003 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2425 3004
2426 evpipe_init (EV_A); 3005#if EV_MULTIPLICITY
3006 assert (("libev: a signal must not be attached to two different loops",
3007 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2427 3008
2428 EV_FREQUENT_CHECK; 3009 signals [w->signum - 1].loop = EV_A;
3010#endif
2429 3011
3012 EV_FREQUENT_CHECK;
3013
3014#if EV_USE_SIGNALFD
3015 if (sigfd == -2)
2430 { 3016 {
2431#ifndef _WIN32 3017 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2432 sigset_t full, prev; 3018 if (sigfd < 0 && errno == EINVAL)
2433 sigfillset (&full); 3019 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2434 sigprocmask (SIG_SETMASK, &full, &prev);
2435#endif
2436 3020
2437 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3021 if (sigfd >= 0)
3022 {
3023 fd_intern (sigfd); /* doing it twice will not hurt */
2438 3024
2439#ifndef _WIN32 3025 sigemptyset (&sigfd_set);
2440 sigprocmask (SIG_SETMASK, &prev, 0); 3026
2441#endif 3027 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3028 ev_set_priority (&sigfd_w, EV_MAXPRI);
3029 ev_io_start (EV_A_ &sigfd_w);
3030 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3031 }
2442 } 3032 }
3033
3034 if (sigfd >= 0)
3035 {
3036 /* TODO: check .head */
3037 sigaddset (&sigfd_set, w->signum);
3038 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3039
3040 signalfd (sigfd, &sigfd_set, 0);
3041 }
3042#endif
2443 3043
2444 ev_start (EV_A_ (W)w, 1); 3044 ev_start (EV_A_ (W)w, 1);
2445 wlist_add (&signals [w->signum - 1].head, (WL)w); 3045 wlist_add (&signals [w->signum - 1].head, (WL)w);
2446 3046
2447 if (!((WL)w)->next) 3047 if (!((WL)w)->next)
3048# if EV_USE_SIGNALFD
3049 if (sigfd < 0) /*TODO*/
3050# endif
2448 { 3051 {
2449#if _WIN32 3052# ifdef _WIN32
3053 evpipe_init (EV_A);
3054
2450 signal (w->signum, ev_sighandler); 3055 signal (w->signum, ev_sighandler);
2451#else 3056# else
2452 struct sigaction sa; 3057 struct sigaction sa;
3058
3059 evpipe_init (EV_A);
3060
2453 sa.sa_handler = ev_sighandler; 3061 sa.sa_handler = ev_sighandler;
2454 sigfillset (&sa.sa_mask); 3062 sigfillset (&sa.sa_mask);
2455 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3063 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2456 sigaction (w->signum, &sa, 0); 3064 sigaction (w->signum, &sa, 0);
3065
3066 if (origflags & EVFLAG_NOSIGMASK)
3067 {
3068 sigemptyset (&sa.sa_mask);
3069 sigaddset (&sa.sa_mask, w->signum);
3070 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3071 }
2457#endif 3072#endif
2458 } 3073 }
2459 3074
2460 EV_FREQUENT_CHECK; 3075 EV_FREQUENT_CHECK;
2461} 3076}
2462 3077
2463void noinline 3078void noinline
… …
2471 3086
2472 wlist_del (&signals [w->signum - 1].head, (WL)w); 3087 wlist_del (&signals [w->signum - 1].head, (WL)w);
2473 ev_stop (EV_A_ (W)w); 3088 ev_stop (EV_A_ (W)w);
2474 3089
2475 if (!signals [w->signum - 1].head) 3090 if (!signals [w->signum - 1].head)
3091 {
3092#if EV_MULTIPLICITY
3093 signals [w->signum - 1].loop = 0; /* unattach from signal */
3094#endif
3095#if EV_USE_SIGNALFD
3096 if (sigfd >= 0)
3097 {
3098 sigset_t ss;
3099
3100 sigemptyset (&ss);
3101 sigaddset (&ss, w->signum);
3102 sigdelset (&sigfd_set, w->signum);
3103
3104 signalfd (sigfd, &sigfd_set, 0);
3105 sigprocmask (SIG_UNBLOCK, &ss, 0);
3106 }
3107 else
3108#endif
2476 signal (w->signum, SIG_DFL); 3109 signal (w->signum, SIG_DFL);
3110 }
2477 3111
2478 EV_FREQUENT_CHECK; 3112 EV_FREQUENT_CHECK;
2479} 3113}
3114
3115#endif
3116
3117#if EV_CHILD_ENABLE
2480 3118
2481void 3119void
2482ev_child_start (EV_P_ ev_child *w) 3120ev_child_start (EV_P_ ev_child *w)
2483{ 3121{
2484#if EV_MULTIPLICITY 3122#if EV_MULTIPLICITY
… …
2488 return; 3126 return;
2489 3127
2490 EV_FREQUENT_CHECK; 3128 EV_FREQUENT_CHECK;
2491 3129
2492 ev_start (EV_A_ (W)w, 1); 3130 ev_start (EV_A_ (W)w, 1);
2493 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3131 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2494 3132
2495 EV_FREQUENT_CHECK; 3133 EV_FREQUENT_CHECK;
2496} 3134}
2497 3135
2498void 3136void
… …
2502 if (expect_false (!ev_is_active (w))) 3140 if (expect_false (!ev_is_active (w)))
2503 return; 3141 return;
2504 3142
2505 EV_FREQUENT_CHECK; 3143 EV_FREQUENT_CHECK;
2506 3144
2507 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3145 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2508 ev_stop (EV_A_ (W)w); 3146 ev_stop (EV_A_ (W)w);
2509 3147
2510 EV_FREQUENT_CHECK; 3148 EV_FREQUENT_CHECK;
2511} 3149}
3150
3151#endif
2512 3152
2513#if EV_STAT_ENABLE 3153#if EV_STAT_ENABLE
2514 3154
2515# ifdef _WIN32 3155# ifdef _WIN32
2516# undef lstat 3156# undef lstat
… …
2522#define MIN_STAT_INTERVAL 0.1074891 3162#define MIN_STAT_INTERVAL 0.1074891
2523 3163
2524static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3164static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2525 3165
2526#if EV_USE_INOTIFY 3166#if EV_USE_INOTIFY
2527# define EV_INOTIFY_BUFSIZE 8192 3167
3168/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3169# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2528 3170
2529static void noinline 3171static void noinline
2530infy_add (EV_P_ ev_stat *w) 3172infy_add (EV_P_ ev_stat *w)
2531{ 3173{
2532 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); 3174 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);
2533 3175
2534 if (w->wd < 0) 3176 if (w->wd >= 0)
3177 {
3178 struct statfs sfs;
3179
3180 /* now local changes will be tracked by inotify, but remote changes won't */
3181 /* unless the filesystem is known to be local, we therefore still poll */
3182 /* also do poll on <2.6.25, but with normal frequency */
3183
3184 if (!fs_2625)
3185 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3186 else if (!statfs (w->path, &sfs)
3187 && (sfs.f_type == 0x1373 /* devfs */
3188 || sfs.f_type == 0xEF53 /* ext2/3 */
3189 || sfs.f_type == 0x3153464a /* jfs */
3190 || sfs.f_type == 0x52654973 /* reiser3 */
3191 || sfs.f_type == 0x01021994 /* tempfs */
3192 || sfs.f_type == 0x58465342 /* xfs */))
3193 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3194 else
3195 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2535 { 3196 }
3197 else
3198 {
3199 /* can't use inotify, continue to stat */
2536 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3200 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2537 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2538 3201
2539 /* monitor some parent directory for speedup hints */ 3202 /* if path is not there, monitor some parent directory for speedup hints */
2540 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3203 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2541 /* but an efficiency issue only */ 3204 /* but an efficiency issue only */
2542 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3205 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2543 { 3206 {
2544 char path [4096]; 3207 char path [4096];
… …
2554 if (!pend || pend == path) 3217 if (!pend || pend == path)
2555 break; 3218 break;
2556 3219
2557 *pend = 0; 3220 *pend = 0;
2558 w->wd = inotify_add_watch (fs_fd, path, mask); 3221 w->wd = inotify_add_watch (fs_fd, path, mask);
2559 } 3222 }
2560 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3223 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2561 } 3224 }
2562 } 3225 }
2563 3226
2564 if (w->wd >= 0) 3227 if (w->wd >= 0)
2565 {
2566 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3228 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2567 3229
2568 /* now local changes will be tracked by inotify, but remote changes won't */ 3230 /* now re-arm timer, if required */
2569 /* unless the filesystem it known to be local, we therefore still poll */ 3231 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2570 /* also do poll on <2.6.25, but with normal frequency */
2571 struct statfs sfs;
2572
2573 if (fs_2625 && !statfs (w->path, &sfs))
2574 if (sfs.f_type == 0x1373 /* devfs */
2575 || sfs.f_type == 0xEF53 /* ext2/3 */
2576 || sfs.f_type == 0x3153464a /* jfs */
2577 || sfs.f_type == 0x52654973 /* reiser3 */
2578 || sfs.f_type == 0x01021994 /* tempfs */
2579 || sfs.f_type == 0x58465342 /* xfs */)
2580 return;
2581
2582 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2583 ev_timer_again (EV_A_ &w->timer); 3232 ev_timer_again (EV_A_ &w->timer);
2584 } 3233 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2585} 3234}
2586 3235
2587static void noinline 3236static void noinline
2588infy_del (EV_P_ ev_stat *w) 3237infy_del (EV_P_ ev_stat *w)
2589{ 3238{
… …
2592 3241
2593 if (wd < 0) 3242 if (wd < 0)
2594 return; 3243 return;
2595 3244
2596 w->wd = -2; 3245 w->wd = -2;
2597 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3246 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2598 wlist_del (&fs_hash [slot].head, (WL)w); 3247 wlist_del (&fs_hash [slot].head, (WL)w);
2599 3248
2600 /* remove this watcher, if others are watching it, they will rearm */ 3249 /* remove this watcher, if others are watching it, they will rearm */
2601 inotify_rm_watch (fs_fd, wd); 3250 inotify_rm_watch (fs_fd, wd);
2602} 3251}
… …
2604static void noinline 3253static void noinline
2605infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3254infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2606{ 3255{
2607 if (slot < 0) 3256 if (slot < 0)
2608 /* overflow, need to check for all hash slots */ 3257 /* overflow, need to check for all hash slots */
2609 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3258 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2610 infy_wd (EV_A_ slot, wd, ev); 3259 infy_wd (EV_A_ slot, wd, ev);
2611 else 3260 else
2612 { 3261 {
2613 WL w_; 3262 WL w_;
2614 3263
2615 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3264 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2616 { 3265 {
2617 ev_stat *w = (ev_stat *)w_; 3266 ev_stat *w = (ev_stat *)w_;
2618 w_ = w_->next; /* lets us remove this watcher and all before it */ 3267 w_ = w_->next; /* lets us remove this watcher and all before it */
2619 3268
2620 if (w->wd == wd || wd == -1) 3269 if (w->wd == wd || wd == -1)
2621 { 3270 {
2622 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3271 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2623 { 3272 {
2624 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3273 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2625 w->wd = -1; 3274 w->wd = -1;
2626 infy_add (EV_A_ w); /* re-add, no matter what */ 3275 infy_add (EV_A_ w); /* re-add, no matter what */
2627 } 3276 }
2628 3277
2629 stat_timer_cb (EV_A_ &w->timer, 0); 3278 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2634 3283
2635static void 3284static void
2636infy_cb (EV_P_ ev_io *w, int revents) 3285infy_cb (EV_P_ ev_io *w, int revents)
2637{ 3286{
2638 char buf [EV_INOTIFY_BUFSIZE]; 3287 char buf [EV_INOTIFY_BUFSIZE];
2639 struct inotify_event *ev = (struct inotify_event *)buf;
2640 int ofs; 3288 int ofs;
2641 int len = read (fs_fd, buf, sizeof (buf)); 3289 int len = read (fs_fd, buf, sizeof (buf));
2642 3290
2643 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3291 for (ofs = 0; ofs < len; )
3292 {
3293 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2644 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3294 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3295 ofs += sizeof (struct inotify_event) + ev->len;
3296 }
2645} 3297}
2646 3298
2647inline_size void 3299inline_size void ecb_cold
2648check_2625 (EV_P) 3300ev_check_2625 (EV_P)
2649{ 3301{
2650 /* kernels < 2.6.25 are borked 3302 /* kernels < 2.6.25 are borked
2651 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3303 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2652 */ 3304 */
2653 struct utsname buf; 3305 if (ev_linux_version () < 0x020619)
2654 int major, minor, micro;
2655
2656 if (uname (&buf))
2657 return; 3306 return;
2658 3307
2659 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2660 return;
2661
2662 if (major < 2
2663 || (major == 2 && minor < 6)
2664 || (major == 2 && minor == 6 && micro < 25))
2665 return;
2666
2667 fs_2625 = 1; 3308 fs_2625 = 1;
3309}
3310
3311inline_size int
3312infy_newfd (void)
3313{
3314#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3315 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3316 if (fd >= 0)
3317 return fd;
3318#endif
3319 return inotify_init ();
2668} 3320}
2669 3321
2670inline_size void 3322inline_size void
2671infy_init (EV_P) 3323infy_init (EV_P)
2672{ 3324{
2673 if (fs_fd != -2) 3325 if (fs_fd != -2)
2674 return; 3326 return;
2675 3327
2676 fs_fd = -1; 3328 fs_fd = -1;
2677 3329
2678 check_2625 (EV_A); 3330 ev_check_2625 (EV_A);
2679 3331
2680 fs_fd = inotify_init (); 3332 fs_fd = infy_newfd ();
2681 3333
2682 if (fs_fd >= 0) 3334 if (fs_fd >= 0)
2683 { 3335 {
3336 fd_intern (fs_fd);
2684 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3337 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2685 ev_set_priority (&fs_w, EV_MAXPRI); 3338 ev_set_priority (&fs_w, EV_MAXPRI);
2686 ev_io_start (EV_A_ &fs_w); 3339 ev_io_start (EV_A_ &fs_w);
3340 ev_unref (EV_A);
2687 } 3341 }
2688} 3342}
2689 3343
2690inline_size void 3344inline_size void
2691infy_fork (EV_P) 3345infy_fork (EV_P)
… …
2693 int slot; 3347 int slot;
2694 3348
2695 if (fs_fd < 0) 3349 if (fs_fd < 0)
2696 return; 3350 return;
2697 3351
3352 ev_ref (EV_A);
3353 ev_io_stop (EV_A_ &fs_w);
2698 close (fs_fd); 3354 close (fs_fd);
2699 fs_fd = inotify_init (); 3355 fs_fd = infy_newfd ();
2700 3356
3357 if (fs_fd >= 0)
3358 {
3359 fd_intern (fs_fd);
3360 ev_io_set (&fs_w, fs_fd, EV_READ);
3361 ev_io_start (EV_A_ &fs_w);
3362 ev_unref (EV_A);
3363 }
3364
2701 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3365 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2702 { 3366 {
2703 WL w_ = fs_hash [slot].head; 3367 WL w_ = fs_hash [slot].head;
2704 fs_hash [slot].head = 0; 3368 fs_hash [slot].head = 0;
2705 3369
2706 while (w_) 3370 while (w_)
… …
2711 w->wd = -1; 3375 w->wd = -1;
2712 3376
2713 if (fs_fd >= 0) 3377 if (fs_fd >= 0)
2714 infy_add (EV_A_ w); /* re-add, no matter what */ 3378 infy_add (EV_A_ w); /* re-add, no matter what */
2715 else 3379 else
3380 {
3381 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3382 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2716 ev_timer_again (EV_A_ &w->timer); 3383 ev_timer_again (EV_A_ &w->timer);
3384 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3385 }
2717 } 3386 }
2718 } 3387 }
2719} 3388}
2720 3389
2721#endif 3390#endif
… …
2738static void noinline 3407static void noinline
2739stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3408stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2740{ 3409{
2741 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3410 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2742 3411
2743 /* we copy this here each the time so that */ 3412 ev_statdata prev = w->attr;
2744 /* prev has the old value when the callback gets invoked */
2745 w->prev = w->attr;
2746 ev_stat_stat (EV_A_ w); 3413 ev_stat_stat (EV_A_ w);
2747 3414
2748 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3415 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2749 if ( 3416 if (
2750 w->prev.st_dev != w->attr.st_dev 3417 prev.st_dev != w->attr.st_dev
2751 || w->prev.st_ino != w->attr.st_ino 3418 || prev.st_ino != w->attr.st_ino
2752 || w->prev.st_mode != w->attr.st_mode 3419 || prev.st_mode != w->attr.st_mode
2753 || w->prev.st_nlink != w->attr.st_nlink 3420 || prev.st_nlink != w->attr.st_nlink
2754 || w->prev.st_uid != w->attr.st_uid 3421 || prev.st_uid != w->attr.st_uid
2755 || w->prev.st_gid != w->attr.st_gid 3422 || prev.st_gid != w->attr.st_gid
2756 || w->prev.st_rdev != w->attr.st_rdev 3423 || prev.st_rdev != w->attr.st_rdev
2757 || w->prev.st_size != w->attr.st_size 3424 || prev.st_size != w->attr.st_size
2758 || w->prev.st_atime != w->attr.st_atime 3425 || prev.st_atime != w->attr.st_atime
2759 || w->prev.st_mtime != w->attr.st_mtime 3426 || prev.st_mtime != w->attr.st_mtime
2760 || w->prev.st_ctime != w->attr.st_ctime 3427 || prev.st_ctime != w->attr.st_ctime
2761 ) { 3428 ) {
3429 /* we only update w->prev on actual differences */
3430 /* in case we test more often than invoke the callback, */
3431 /* to ensure that prev is always different to attr */
3432 w->prev = prev;
3433
2762 #if EV_USE_INOTIFY 3434 #if EV_USE_INOTIFY
2763 if (fs_fd >= 0) 3435 if (fs_fd >= 0)
2764 { 3436 {
2765 infy_del (EV_A_ w); 3437 infy_del (EV_A_ w);
2766 infy_add (EV_A_ w); 3438 infy_add (EV_A_ w);
… …
2791 3463
2792 if (fs_fd >= 0) 3464 if (fs_fd >= 0)
2793 infy_add (EV_A_ w); 3465 infy_add (EV_A_ w);
2794 else 3466 else
2795#endif 3467#endif
3468 {
2796 ev_timer_again (EV_A_ &w->timer); 3469 ev_timer_again (EV_A_ &w->timer);
3470 ev_unref (EV_A);
3471 }
2797 3472
2798 ev_start (EV_A_ (W)w, 1); 3473 ev_start (EV_A_ (W)w, 1);
2799 3474
2800 EV_FREQUENT_CHECK; 3475 EV_FREQUENT_CHECK;
2801} 3476}
… …
2810 EV_FREQUENT_CHECK; 3485 EV_FREQUENT_CHECK;
2811 3486
2812#if EV_USE_INOTIFY 3487#if EV_USE_INOTIFY
2813 infy_del (EV_A_ w); 3488 infy_del (EV_A_ w);
2814#endif 3489#endif
3490
3491 if (ev_is_active (&w->timer))
3492 {
3493 ev_ref (EV_A);
2815 ev_timer_stop (EV_A_ &w->timer); 3494 ev_timer_stop (EV_A_ &w->timer);
3495 }
2816 3496
2817 ev_stop (EV_A_ (W)w); 3497 ev_stop (EV_A_ (W)w);
2818 3498
2819 EV_FREQUENT_CHECK; 3499 EV_FREQUENT_CHECK;
2820} 3500}
… …
2865 3545
2866 EV_FREQUENT_CHECK; 3546 EV_FREQUENT_CHECK;
2867} 3547}
2868#endif 3548#endif
2869 3549
3550#if EV_PREPARE_ENABLE
2870void 3551void
2871ev_prepare_start (EV_P_ ev_prepare *w) 3552ev_prepare_start (EV_P_ ev_prepare *w)
2872{ 3553{
2873 if (expect_false (ev_is_active (w))) 3554 if (expect_false (ev_is_active (w)))
2874 return; 3555 return;
… …
2900 3581
2901 ev_stop (EV_A_ (W)w); 3582 ev_stop (EV_A_ (W)w);
2902 3583
2903 EV_FREQUENT_CHECK; 3584 EV_FREQUENT_CHECK;
2904} 3585}
3586#endif
2905 3587
3588#if EV_CHECK_ENABLE
2906void 3589void
2907ev_check_start (EV_P_ ev_check *w) 3590ev_check_start (EV_P_ ev_check *w)
2908{ 3591{
2909 if (expect_false (ev_is_active (w))) 3592 if (expect_false (ev_is_active (w)))
2910 return; 3593 return;
… …
2936 3619
2937 ev_stop (EV_A_ (W)w); 3620 ev_stop (EV_A_ (W)w);
2938 3621
2939 EV_FREQUENT_CHECK; 3622 EV_FREQUENT_CHECK;
2940} 3623}
3624#endif
2941 3625
2942#if EV_EMBED_ENABLE 3626#if EV_EMBED_ENABLE
2943void noinline 3627void noinline
2944ev_embed_sweep (EV_P_ ev_embed *w) 3628ev_embed_sweep (EV_P_ ev_embed *w)
2945{ 3629{
2946 ev_loop (w->other, EVLOOP_NONBLOCK); 3630 ev_run (w->other, EVRUN_NOWAIT);
2947} 3631}
2948 3632
2949static void 3633static void
2950embed_io_cb (EV_P_ ev_io *io, int revents) 3634embed_io_cb (EV_P_ ev_io *io, int revents)
2951{ 3635{
2952 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3636 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2953 3637
2954 if (ev_cb (w)) 3638 if (ev_cb (w))
2955 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3639 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2956 else 3640 else
2957 ev_loop (w->other, EVLOOP_NONBLOCK); 3641 ev_run (w->other, EVRUN_NOWAIT);
2958} 3642}
2959 3643
2960static void 3644static void
2961embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3645embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2962{ 3646{
2963 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3647 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2964 3648
2965 { 3649 {
2966 struct ev_loop *loop = w->other; 3650 EV_P = w->other;
2967 3651
2968 while (fdchangecnt) 3652 while (fdchangecnt)
2969 { 3653 {
2970 fd_reify (EV_A); 3654 fd_reify (EV_A);
2971 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3655 ev_run (EV_A_ EVRUN_NOWAIT);
2972 } 3656 }
2973 } 3657 }
2974} 3658}
2975 3659
2976static void 3660static void
… …
2979 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3663 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2980 3664
2981 ev_embed_stop (EV_A_ w); 3665 ev_embed_stop (EV_A_ w);
2982 3666
2983 { 3667 {
2984 struct ev_loop *loop = w->other; 3668 EV_P = w->other;
2985 3669
2986 ev_loop_fork (EV_A); 3670 ev_loop_fork (EV_A);
2987 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3671 ev_run (EV_A_ EVRUN_NOWAIT);
2988 } 3672 }
2989 3673
2990 ev_embed_start (EV_A_ w); 3674 ev_embed_start (EV_A_ w);
2991} 3675}
2992 3676
… …
3003{ 3687{
3004 if (expect_false (ev_is_active (w))) 3688 if (expect_false (ev_is_active (w)))
3005 return; 3689 return;
3006 3690
3007 { 3691 {
3008 struct ev_loop *loop = w->other; 3692 EV_P = w->other;
3009 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3693 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3010 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3694 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3011 } 3695 }
3012 3696
3013 EV_FREQUENT_CHECK; 3697 EV_FREQUENT_CHECK;
… …
3040 3724
3041 ev_io_stop (EV_A_ &w->io); 3725 ev_io_stop (EV_A_ &w->io);
3042 ev_prepare_stop (EV_A_ &w->prepare); 3726 ev_prepare_stop (EV_A_ &w->prepare);
3043 ev_fork_stop (EV_A_ &w->fork); 3727 ev_fork_stop (EV_A_ &w->fork);
3044 3728
3729 ev_stop (EV_A_ (W)w);
3730
3045 EV_FREQUENT_CHECK; 3731 EV_FREQUENT_CHECK;
3046} 3732}
3047#endif 3733#endif
3048 3734
3049#if EV_FORK_ENABLE 3735#if EV_FORK_ENABLE
… …
3082 3768
3083 EV_FREQUENT_CHECK; 3769 EV_FREQUENT_CHECK;
3084} 3770}
3085#endif 3771#endif
3086 3772
3773#if EV_CLEANUP_ENABLE
3774void
3775ev_cleanup_start (EV_P_ ev_cleanup *w)
3776{
3777 if (expect_false (ev_is_active (w)))
3778 return;
3779
3780 EV_FREQUENT_CHECK;
3781
3782 ev_start (EV_A_ (W)w, ++cleanupcnt);
3783 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3784 cleanups [cleanupcnt - 1] = w;
3785
3786 /* cleanup watchers should never keep a refcount on the loop */
3787 ev_unref (EV_A);
3788 EV_FREQUENT_CHECK;
3789}
3790
3791void
3792ev_cleanup_stop (EV_P_ ev_cleanup *w)
3793{
3794 clear_pending (EV_A_ (W)w);
3795 if (expect_false (!ev_is_active (w)))
3796 return;
3797
3798 EV_FREQUENT_CHECK;
3799 ev_ref (EV_A);
3800
3801 {
3802 int active = ev_active (w);
3803
3804 cleanups [active - 1] = cleanups [--cleanupcnt];
3805 ev_active (cleanups [active - 1]) = active;
3806 }
3807
3808 ev_stop (EV_A_ (W)w);
3809
3810 EV_FREQUENT_CHECK;
3811}
3812#endif
3813
3087#if EV_ASYNC_ENABLE 3814#if EV_ASYNC_ENABLE
3088void 3815void
3089ev_async_start (EV_P_ ev_async *w) 3816ev_async_start (EV_P_ ev_async *w)
3090{ 3817{
3091 if (expect_false (ev_is_active (w))) 3818 if (expect_false (ev_is_active (w)))
3092 return; 3819 return;
3093 3820
3821 w->sent = 0;
3822
3094 evpipe_init (EV_A); 3823 evpipe_init (EV_A);
3095 3824
3096 EV_FREQUENT_CHECK; 3825 EV_FREQUENT_CHECK;
3097 3826
3098 ev_start (EV_A_ (W)w, ++asynccnt); 3827 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3125 3854
3126void 3855void
3127ev_async_send (EV_P_ ev_async *w) 3856ev_async_send (EV_P_ ev_async *w)
3128{ 3857{
3129 w->sent = 1; 3858 w->sent = 1;
3130 evpipe_write (EV_A_ &gotasync); 3859 evpipe_write (EV_A_ &async_pending);
3131} 3860}
3132#endif 3861#endif
3133 3862
3134/*****************************************************************************/ 3863/*****************************************************************************/
3135 3864
… …
3175{ 3904{
3176 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3905 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3177 3906
3178 if (expect_false (!once)) 3907 if (expect_false (!once))
3179 { 3908 {
3180 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3909 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3181 return; 3910 return;
3182 } 3911 }
3183 3912
3184 once->cb = cb; 3913 once->cb = cb;
3185 once->arg = arg; 3914 once->arg = arg;
… …
3199 } 3928 }
3200} 3929}
3201 3930
3202/*****************************************************************************/ 3931/*****************************************************************************/
3203 3932
3204#if 0 3933#if EV_WALK_ENABLE
3205void 3934void ecb_cold
3206ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 3935ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3207{ 3936{
3208 int i, j; 3937 int i, j;
3209 ev_watcher_list *wl, *wn; 3938 ev_watcher_list *wl, *wn;
3210 3939
… …
3225#if EV_USE_INOTIFY 3954#if EV_USE_INOTIFY
3226 if (ev_cb ((ev_io *)wl) == infy_cb) 3955 if (ev_cb ((ev_io *)wl) == infy_cb)
3227 ; 3956 ;
3228 else 3957 else
3229#endif 3958#endif
3230 if ((ev_io *)wl != &pipeev) 3959 if ((ev_io *)wl != &pipe_w)
3231 if (types & EV_IO) 3960 if (types & EV_IO)
3232 cb (EV_A_ EV_IO, wl); 3961 cb (EV_A_ EV_IO, wl);
3233 3962
3234 wl = wn; 3963 wl = wn;
3235 } 3964 }
… …
3272 if (types & EV_ASYNC) 4001 if (types & EV_ASYNC)
3273 for (i = asynccnt; i--; ) 4002 for (i = asynccnt; i--; )
3274 cb (EV_A_ EV_ASYNC, asyncs [i]); 4003 cb (EV_A_ EV_ASYNC, asyncs [i]);
3275#endif 4004#endif
3276 4005
4006#if EV_PREPARE_ENABLE
3277 if (types & EV_PREPARE) 4007 if (types & EV_PREPARE)
3278 for (i = preparecnt; i--; ) 4008 for (i = preparecnt; i--; )
3279#if EV_EMBED_ENABLE 4009# if EV_EMBED_ENABLE
3280 if (ev_cb (prepares [i]) != embed_prepare_cb) 4010 if (ev_cb (prepares [i]) != embed_prepare_cb)
3281#endif 4011# endif
3282 cb (EV_A_ EV_PREPARE, prepares [i]); 4012 cb (EV_A_ EV_PREPARE, prepares [i]);
4013#endif
3283 4014
4015#if EV_CHECK_ENABLE
3284 if (types & EV_CHECK) 4016 if (types & EV_CHECK)
3285 for (i = checkcnt; i--; ) 4017 for (i = checkcnt; i--; )
3286 cb (EV_A_ EV_CHECK, checks [i]); 4018 cb (EV_A_ EV_CHECK, checks [i]);
4019#endif
3287 4020
4021#if EV_SIGNAL_ENABLE
3288 if (types & EV_SIGNAL) 4022 if (types & EV_SIGNAL)
3289 for (i = 0; i < signalmax; ++i) 4023 for (i = 0; i < EV_NSIG - 1; ++i)
3290 for (wl = signals [i].head; wl; ) 4024 for (wl = signals [i].head; wl; )
3291 { 4025 {
3292 wn = wl->next; 4026 wn = wl->next;
3293 cb (EV_A_ EV_SIGNAL, wl); 4027 cb (EV_A_ EV_SIGNAL, wl);
3294 wl = wn; 4028 wl = wn;
3295 } 4029 }
4030#endif
3296 4031
4032#if EV_CHILD_ENABLE
3297 if (types & EV_CHILD) 4033 if (types & EV_CHILD)
3298 for (i = EV_PID_HASHSIZE; i--; ) 4034 for (i = (EV_PID_HASHSIZE); i--; )
3299 for (wl = childs [i]; wl; ) 4035 for (wl = childs [i]; wl; )
3300 { 4036 {
3301 wn = wl->next; 4037 wn = wl->next;
3302 cb (EV_A_ EV_CHILD, wl); 4038 cb (EV_A_ EV_CHILD, wl);
3303 wl = wn; 4039 wl = wn;
3304 } 4040 }
4041#endif
3305/* EV_STAT 0x00001000 /* stat data changed */ 4042/* EV_STAT 0x00001000 /* stat data changed */
3306/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4043/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3307} 4044}
3308#endif 4045#endif
3309 4046
3310#if EV_MULTIPLICITY 4047#if EV_MULTIPLICITY
3311 #include "ev_wrap.h" 4048 #include "ev_wrap.h"
3312#endif 4049#endif
3313 4050
3314#ifdef __cplusplus 4051EV_CPP(})
3315}
3316#endif
3317 4052

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