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Comparing libev/ev.c (file contents):
Revision 1.289 by root, Sat Jun 6 11:13:16 2009 UTC vs.
Revision 1.376 by root, Sat Jun 4 05:33:29 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 */ 465
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
367 468
368#if __GNUC__ >= 4 469#if __GNUC__ >= 4
369# define expect(expr,value) __builtin_expect ((expr),(value)) 470# define expect(expr,value) __builtin_expect ((expr),(value))
370# define noinline __attribute__ ((noinline)) 471# define noinline __attribute__ ((noinline))
371#else 472#else
… …
378 479
379#define expect_false(expr) expect ((expr) != 0, 0) 480#define expect_false(expr) expect ((expr) != 0, 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 481#define expect_true(expr) expect ((expr) != 0, 1)
381#define inline_size static inline 482#define inline_size static inline
382 483
383#if EV_MINIMAL 484#if EV_FEATURE_CODE
485# define inline_speed static inline
486#else
384# define inline_speed static noinline 487# define inline_speed static noinline
488#endif
489
490#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
491
492#if EV_MINPRI == EV_MAXPRI
493# define ABSPRI(w) (((W)w), 0)
385#else 494#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) 495# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
496#endif
391 497
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 498#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 499#define EMPTY2(a,b) /* used to suppress some warnings */
394 500
395typedef ev_watcher *W; 501typedef ev_watcher *W;
… …
399#define ev_active(w) ((W)(w))->active 505#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 506#define ev_at(w) ((WT)(w))->at
401 507
402#if EV_USE_REALTIME 508#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 509/* 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 */ 510/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 511static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 512#endif
407 513
408#if EV_USE_MONOTONIC 514#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 515static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 516#endif
411 517
518#ifndef EV_FD_TO_WIN32_HANDLE
519# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
520#endif
521#ifndef EV_WIN32_HANDLE_TO_FD
522# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
523#endif
524#ifndef EV_WIN32_CLOSE_FD
525# define EV_WIN32_CLOSE_FD(fd) close (fd)
526#endif
527
412#ifdef _WIN32 528#ifdef _WIN32
413# include "ev_win32.c" 529# include "ev_win32.c"
414#endif 530#endif
415 531
416/*****************************************************************************/ 532/*****************************************************************************/
533
534/* define a suitable floor function (only used by periodics atm) */
535
536#if EV_USE_FLOOR
537# include <math.h>
538# define ev_floor(v) floor (v)
539#else
540
541#include <float.h>
542
543/* a floor() replacement function, should be independent of ev_tstamp type */
544static ev_tstamp noinline
545ev_floor (ev_tstamp v)
546{
547 /* the choice of shift factor is not terribly important */
548#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
549 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
550#else
551 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
552#endif
553
554 /* argument too large for an unsigned long? */
555 if (expect_false (v >= shift))
556 {
557 ev_tstamp f;
558
559 if (v == v - 1.)
560 return v; /* very large number */
561
562 f = shift * ev_floor (v * (1. / shift));
563 return f + ev_floor (v - f);
564 }
565
566 /* special treatment for negative args? */
567 if (expect_false (v < 0.))
568 {
569 ev_tstamp f = -ev_floor (-v);
570
571 return f - (f == v ? 0 : 1);
572 }
573
574 /* fits into an unsigned long */
575 return (unsigned long)v;
576}
577
578#endif
579
580/*****************************************************************************/
581
582#ifdef __linux
583# include <sys/utsname.h>
584#endif
585
586static unsigned int noinline
587ev_linux_version (void)
588{
589#ifdef __linux
590 unsigned int v = 0;
591 struct utsname buf;
592 int i;
593 char *p = buf.release;
594
595 if (uname (&buf))
596 return 0;
597
598 for (i = 3+1; --i; )
599 {
600 unsigned int c = 0;
601
602 for (;;)
603 {
604 if (*p >= '0' && *p <= '9')
605 c = c * 10 + *p++ - '0';
606 else
607 {
608 p += *p == '.';
609 break;
610 }
611 }
612
613 v = (v << 8) | c;
614 }
615
616 return v;
617#else
618 return 0;
619#endif
620}
621
622/*****************************************************************************/
623
624#if EV_AVOID_STDIO
625static void noinline
626ev_printerr (const char *msg)
627{
628 write (STDERR_FILENO, msg, strlen (msg));
629}
630#endif
417 631
418static void (*syserr_cb)(const char *msg); 632static void (*syserr_cb)(const char *msg);
419 633
420void 634void
421ev_set_syserr_cb (void (*cb)(const char *msg)) 635ev_set_syserr_cb (void (*cb)(const char *msg))
… …
431 645
432 if (syserr_cb) 646 if (syserr_cb)
433 syserr_cb (msg); 647 syserr_cb (msg);
434 else 648 else
435 { 649 {
650#if EV_AVOID_STDIO
651 ev_printerr (msg);
652 ev_printerr (": ");
653 ev_printerr (strerror (errno));
654 ev_printerr ("\n");
655#else
436 perror (msg); 656 perror (msg);
657#endif
437 abort (); 658 abort ();
438 } 659 }
439} 660}
440 661
441static void * 662static void *
442ev_realloc_emul (void *ptr, long size) 663ev_realloc_emul (void *ptr, long size)
443{ 664{
665#if __GLIBC__
666 return realloc (ptr, size);
667#else
444 /* some systems, notably openbsd and darwin, fail to properly 668 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 669 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 670 * the single unix specification, so work around them here.
447 */ 671 */
448 672
449 if (size) 673 if (size)
450 return realloc (ptr, size); 674 return realloc (ptr, size);
451 675
452 free (ptr); 676 free (ptr);
453 return 0; 677 return 0;
678#endif
454} 679}
455 680
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 681static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
457 682
458void 683void
… …
466{ 691{
467 ptr = alloc (ptr, size); 692 ptr = alloc (ptr, size);
468 693
469 if (!ptr && size) 694 if (!ptr && size)
470 { 695 {
696#if EV_AVOID_STDIO
697 ev_printerr ("(libev) memory allocation failed, aborting.\n");
698#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 699 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
700#endif
472 abort (); 701 abort ();
473 } 702 }
474 703
475 return ptr; 704 return ptr;
476} 705}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 707#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 708#define ev_free(ptr) ev_realloc ((ptr), 0)
480 709
481/*****************************************************************************/ 710/*****************************************************************************/
482 711
712/* set in reify when reification needed */
713#define EV_ANFD_REIFY 1
714
483/* file descriptor info structure */ 715/* file descriptor info structure */
484typedef struct 716typedef struct
485{ 717{
486 WL head; 718 WL head;
487 unsigned char events; /* the events watched for */ 719 unsigned char events; /* the events watched for */
488 unsigned char reify; /* flag set when this ANFD needs reification */ 720 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
489 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 721 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
490 unsigned char unused; 722 unsigned char unused;
491#if EV_USE_EPOLL 723#if EV_USE_EPOLL
492 unsigned int egen; /* generation counter to counter epoll bugs */ 724 unsigned int egen; /* generation counter to counter epoll bugs */
493#endif 725#endif
494#if EV_SELECT_IS_WINSOCKET 726#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
495 SOCKET handle; 727 SOCKET handle;
728#endif
729#if EV_USE_IOCP
730 OVERLAPPED or, ow;
496#endif 731#endif
497} ANFD; 732} ANFD;
498 733
499/* stores the pending event set for a given watcher */ 734/* stores the pending event set for a given watcher */
500typedef struct 735typedef struct
… …
555 790
556 static int ev_default_loop_ptr; 791 static int ev_default_loop_ptr;
557 792
558#endif 793#endif
559 794
795#if EV_FEATURE_API
796# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
797# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
798# define EV_INVOKE_PENDING invoke_cb (EV_A)
799#else
800# define EV_RELEASE_CB (void)0
801# define EV_ACQUIRE_CB (void)0
802# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
803#endif
804
805#define EVBREAK_RECURSE 0x80
806
560/*****************************************************************************/ 807/*****************************************************************************/
561 808
809#ifndef EV_HAVE_EV_TIME
562ev_tstamp 810ev_tstamp
563ev_time (void) 811ev_time (void)
564{ 812{
565#if EV_USE_REALTIME 813#if EV_USE_REALTIME
566 if (expect_true (have_realtime)) 814 if (expect_true (have_realtime))
… …
573 821
574 struct timeval tv; 822 struct timeval tv;
575 gettimeofday (&tv, 0); 823 gettimeofday (&tv, 0);
576 return tv.tv_sec + tv.tv_usec * 1e-6; 824 return tv.tv_sec + tv.tv_usec * 1e-6;
577} 825}
826#endif
578 827
579inline_size ev_tstamp 828inline_size ev_tstamp
580get_clock (void) 829get_clock (void)
581{ 830{
582#if EV_USE_MONOTONIC 831#if EV_USE_MONOTONIC
… …
605 if (delay > 0.) 854 if (delay > 0.)
606 { 855 {
607#if EV_USE_NANOSLEEP 856#if EV_USE_NANOSLEEP
608 struct timespec ts; 857 struct timespec ts;
609 858
610 ts.tv_sec = (time_t)delay; 859 EV_TS_SET (ts, delay);
611 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
612
613 nanosleep (&ts, 0); 860 nanosleep (&ts, 0);
614#elif defined(_WIN32) 861#elif defined(_WIN32)
615 Sleep ((unsigned long)(delay * 1e3)); 862 Sleep ((unsigned long)(delay * 1e3));
616#else 863#else
617 struct timeval tv; 864 struct timeval tv;
618 865
619 tv.tv_sec = (time_t)delay;
620 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
621
622 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 866 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
623 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 867 /* something not guaranteed by newer posix versions, but guaranteed */
624 /* by older ones */ 868 /* by older ones */
869 EV_TV_SET (tv, delay);
625 select (0, 0, 0, 0, &tv); 870 select (0, 0, 0, 0, &tv);
626#endif 871#endif
627 } 872 }
628} 873}
629 874
630/*****************************************************************************/ 875/*****************************************************************************/
631 876
632#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 877#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
633 878
634/* find a suitable new size for the given array, */ 879/* find a suitable new size for the given array, */
635/* hopefully by rounding to a ncie-to-malloc size */ 880/* hopefully by rounding to a nice-to-malloc size */
636inline_size int 881inline_size int
637array_nextsize (int elem, int cur, int cnt) 882array_nextsize (int elem, int cur, int cnt)
638{ 883{
639 int ncur = cur + 1; 884 int ncur = cur + 1;
640 885
… …
736} 981}
737 982
738/*****************************************************************************/ 983/*****************************************************************************/
739 984
740inline_speed void 985inline_speed void
741fd_event (EV_P_ int fd, int revents) 986fd_event_nocheck (EV_P_ int fd, int revents)
742{ 987{
743 ANFD *anfd = anfds + fd; 988 ANFD *anfd = anfds + fd;
744 ev_io *w; 989 ev_io *w;
745 990
746 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 991 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
750 if (ev) 995 if (ev)
751 ev_feed_event (EV_A_ (W)w, ev); 996 ev_feed_event (EV_A_ (W)w, ev);
752 } 997 }
753} 998}
754 999
1000/* do not submit kernel events for fds that have reify set */
1001/* because that means they changed while we were polling for new events */
1002inline_speed void
1003fd_event (EV_P_ int fd, int revents)
1004{
1005 ANFD *anfd = anfds + fd;
1006
1007 if (expect_true (!anfd->reify))
1008 fd_event_nocheck (EV_A_ fd, revents);
1009}
1010
755void 1011void
756ev_feed_fd_event (EV_P_ int fd, int revents) 1012ev_feed_fd_event (EV_P_ int fd, int revents)
757{ 1013{
758 if (fd >= 0 && fd < anfdmax) 1014 if (fd >= 0 && fd < anfdmax)
759 fd_event (EV_A_ fd, revents); 1015 fd_event_nocheck (EV_A_ fd, revents);
760} 1016}
761 1017
762/* make sure the external fd watch events are in-sync */ 1018/* make sure the external fd watch events are in-sync */
763/* with the kernel/libev internal state */ 1019/* with the kernel/libev internal state */
764inline_size void 1020inline_size void
765fd_reify (EV_P) 1021fd_reify (EV_P)
766{ 1022{
767 int i; 1023 int i;
768 1024
1025#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1026 for (i = 0; i < fdchangecnt; ++i)
1027 {
1028 int fd = fdchanges [i];
1029 ANFD *anfd = anfds + fd;
1030
1031 if (anfd->reify & EV__IOFDSET && anfd->head)
1032 {
1033 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1034
1035 if (handle != anfd->handle)
1036 {
1037 unsigned long arg;
1038
1039 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1040
1041 /* handle changed, but fd didn't - we need to do it in two steps */
1042 backend_modify (EV_A_ fd, anfd->events, 0);
1043 anfd->events = 0;
1044 anfd->handle = handle;
1045 }
1046 }
1047 }
1048#endif
1049
769 for (i = 0; i < fdchangecnt; ++i) 1050 for (i = 0; i < fdchangecnt; ++i)
770 { 1051 {
771 int fd = fdchanges [i]; 1052 int fd = fdchanges [i];
772 ANFD *anfd = anfds + fd; 1053 ANFD *anfd = anfds + fd;
773 ev_io *w; 1054 ev_io *w;
774 1055
775 unsigned char events = 0; 1056 unsigned char o_events = anfd->events;
1057 unsigned char o_reify = anfd->reify;
776 1058
777 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1059 anfd->reify = 0;
778 events |= (unsigned char)w->events;
779 1060
780#if EV_SELECT_IS_WINSOCKET 1061 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
781 if (events)
782 { 1062 {
783 unsigned long arg; 1063 anfd->events = 0;
784 #ifdef EV_FD_TO_WIN32_HANDLE 1064
785 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1065 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
786 #else 1066 anfd->events |= (unsigned char)w->events;
787 anfd->handle = _get_osfhandle (fd); 1067
788 #endif 1068 if (o_events != anfd->events)
789 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1069 o_reify = EV__IOFDSET; /* actually |= */
790 } 1070 }
791#endif
792 1071
793 { 1072 if (o_reify & EV__IOFDSET)
794 unsigned char o_events = anfd->events;
795 unsigned char o_reify = anfd->reify;
796
797 anfd->reify = 0;
798 anfd->events = events;
799
800 if (o_events != events || o_reify & EV__IOFDSET)
801 backend_modify (EV_A_ fd, o_events, events); 1073 backend_modify (EV_A_ fd, o_events, anfd->events);
802 }
803 } 1074 }
804 1075
805 fdchangecnt = 0; 1076 fdchangecnt = 0;
806} 1077}
807 1078
… …
831 ev_io_stop (EV_A_ w); 1102 ev_io_stop (EV_A_ w);
832 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1103 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
833 } 1104 }
834} 1105}
835 1106
836/* check whether the given fd is atcually valid, for error recovery */ 1107/* check whether the given fd is actually valid, for error recovery */
837inline_size int 1108inline_size int
838fd_valid (int fd) 1109fd_valid (int fd)
839{ 1110{
840#ifdef _WIN32 1111#ifdef _WIN32
841 return _get_osfhandle (fd) != -1; 1112 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
842#else 1113#else
843 return fcntl (fd, F_GETFD) != -1; 1114 return fcntl (fd, F_GETFD) != -1;
844#endif 1115#endif
845} 1116}
846 1117
… …
864 1135
865 for (fd = anfdmax; fd--; ) 1136 for (fd = anfdmax; fd--; )
866 if (anfds [fd].events) 1137 if (anfds [fd].events)
867 { 1138 {
868 fd_kill (EV_A_ fd); 1139 fd_kill (EV_A_ fd);
869 return; 1140 break;
870 } 1141 }
871} 1142}
872 1143
873/* usually called after fork if backend needs to re-arm all fds from scratch */ 1144/* usually called after fork if backend needs to re-arm all fds from scratch */
874static void noinline 1145static void noinline
… …
879 for (fd = 0; fd < anfdmax; ++fd) 1150 for (fd = 0; fd < anfdmax; ++fd)
880 if (anfds [fd].events) 1151 if (anfds [fd].events)
881 { 1152 {
882 anfds [fd].events = 0; 1153 anfds [fd].events = 0;
883 anfds [fd].emask = 0; 1154 anfds [fd].emask = 0;
884 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1155 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
885 } 1156 }
886} 1157}
887 1158
1159/* used to prepare libev internal fd's */
1160/* this is not fork-safe */
1161inline_speed void
1162fd_intern (int fd)
1163{
1164#ifdef _WIN32
1165 unsigned long arg = 1;
1166 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1167#else
1168 fcntl (fd, F_SETFD, FD_CLOEXEC);
1169 fcntl (fd, F_SETFL, O_NONBLOCK);
1170#endif
1171}
1172
888/*****************************************************************************/ 1173/*****************************************************************************/
889 1174
890/* 1175/*
891 * the heap functions want a real array index. array index 0 uis guaranteed to not 1176 * the heap functions want a real array index. array index 0 is guaranteed to not
892 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1177 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
893 * the branching factor of the d-tree. 1178 * the branching factor of the d-tree.
894 */ 1179 */
895 1180
896/* 1181/*
… …
964 1249
965 for (;;) 1250 for (;;)
966 { 1251 {
967 int c = k << 1; 1252 int c = k << 1;
968 1253
969 if (c > N + HEAP0 - 1) 1254 if (c >= N + HEAP0)
970 break; 1255 break;
971 1256
972 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1257 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
973 ? 1 : 0; 1258 ? 1 : 0;
974 1259
… …
1010 1295
1011/* move an element suitably so it is in a correct place */ 1296/* move an element suitably so it is in a correct place */
1012inline_size void 1297inline_size void
1013adjustheap (ANHE *heap, int N, int k) 1298adjustheap (ANHE *heap, int N, int k)
1014{ 1299{
1015 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1300 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1016 upheap (heap, k); 1301 upheap (heap, k);
1017 else 1302 else
1018 downheap (heap, N, k); 1303 downheap (heap, N, k);
1019} 1304}
1020 1305
… …
1033/*****************************************************************************/ 1318/*****************************************************************************/
1034 1319
1035/* associate signal watchers to a signal signal */ 1320/* associate signal watchers to a signal signal */
1036typedef struct 1321typedef struct
1037{ 1322{
1323 EV_ATOMIC_T pending;
1324#if EV_MULTIPLICITY
1325 EV_P;
1326#endif
1038 WL head; 1327 WL head;
1039 EV_ATOMIC_T gotsig;
1040} ANSIG; 1328} ANSIG;
1041 1329
1042static ANSIG *signals; 1330static ANSIG signals [EV_NSIG - 1];
1043static int signalmax;
1044
1045static EV_ATOMIC_T gotsig;
1046 1331
1047/*****************************************************************************/ 1332/*****************************************************************************/
1048 1333
1049/* used to prepare libev internal fd's */ 1334#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1050/* this is not fork-safe */
1051inline_speed void
1052fd_intern (int fd)
1053{
1054#ifdef _WIN32
1055 unsigned long arg = 1;
1056 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1057#else
1058 fcntl (fd, F_SETFD, FD_CLOEXEC);
1059 fcntl (fd, F_SETFL, O_NONBLOCK);
1060#endif
1061}
1062 1335
1063static void noinline 1336static void noinline
1064evpipe_init (EV_P) 1337evpipe_init (EV_P)
1065{ 1338{
1066 if (!ev_is_active (&pipe_w)) 1339 if (!ev_is_active (&pipe_w))
1067 { 1340 {
1068#if EV_USE_EVENTFD 1341# if EV_USE_EVENTFD
1342 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1343 if (evfd < 0 && errno == EINVAL)
1069 if ((evfd = eventfd (0, 0)) >= 0) 1344 evfd = eventfd (0, 0);
1345
1346 if (evfd >= 0)
1070 { 1347 {
1071 evpipe [0] = -1; 1348 evpipe [0] = -1;
1072 fd_intern (evfd); 1349 fd_intern (evfd); /* doing it twice doesn't hurt */
1073 ev_io_set (&pipe_w, evfd, EV_READ); 1350 ev_io_set (&pipe_w, evfd, EV_READ);
1074 } 1351 }
1075 else 1352 else
1076#endif 1353# endif
1077 { 1354 {
1078 while (pipe (evpipe)) 1355 while (pipe (evpipe))
1079 ev_syserr ("(libev) error creating signal/async pipe"); 1356 ev_syserr ("(libev) error creating signal/async pipe");
1080 1357
1081 fd_intern (evpipe [0]); 1358 fd_intern (evpipe [0]);
… …
1092evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1369evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1093{ 1370{
1094 if (!*flag) 1371 if (!*flag)
1095 { 1372 {
1096 int old_errno = errno; /* save errno because write might clobber it */ 1373 int old_errno = errno; /* save errno because write might clobber it */
1374 char dummy;
1097 1375
1098 *flag = 1; 1376 *flag = 1;
1099 1377
1100#if EV_USE_EVENTFD 1378#if EV_USE_EVENTFD
1101 if (evfd >= 0) 1379 if (evfd >= 0)
… …
1103 uint64_t counter = 1; 1381 uint64_t counter = 1;
1104 write (evfd, &counter, sizeof (uint64_t)); 1382 write (evfd, &counter, sizeof (uint64_t));
1105 } 1383 }
1106 else 1384 else
1107#endif 1385#endif
1386 /* win32 people keep sending patches that change this write() to send() */
1387 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1388 /* so when you think this write should be a send instead, please find out */
1389 /* where your send() is from - it's definitely not the microsoft send, and */
1390 /* tell me. thank you. */
1108 write (evpipe [1], &old_errno, 1); 1391 write (evpipe [1], &dummy, 1);
1109 1392
1110 errno = old_errno; 1393 errno = old_errno;
1111 } 1394 }
1112} 1395}
1113 1396
1114/* called whenever the libev signal pipe */ 1397/* called whenever the libev signal pipe */
1115/* got some events (signal, async) */ 1398/* got some events (signal, async) */
1116static void 1399static void
1117pipecb (EV_P_ ev_io *iow, int revents) 1400pipecb (EV_P_ ev_io *iow, int revents)
1118{ 1401{
1402 int i;
1403
1119#if EV_USE_EVENTFD 1404#if EV_USE_EVENTFD
1120 if (evfd >= 0) 1405 if (evfd >= 0)
1121 { 1406 {
1122 uint64_t counter; 1407 uint64_t counter;
1123 read (evfd, &counter, sizeof (uint64_t)); 1408 read (evfd, &counter, sizeof (uint64_t));
1124 } 1409 }
1125 else 1410 else
1126#endif 1411#endif
1127 { 1412 {
1128 char dummy; 1413 char dummy;
1414 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1129 read (evpipe [0], &dummy, 1); 1415 read (evpipe [0], &dummy, 1);
1130 } 1416 }
1131 1417
1132 if (gotsig && ev_is_default_loop (EV_A)) 1418#if EV_SIGNAL_ENABLE
1133 { 1419 if (sig_pending)
1134 int signum; 1420 {
1135 gotsig = 0; 1421 sig_pending = 0;
1136 1422
1137 for (signum = signalmax; signum--; ) 1423 for (i = EV_NSIG - 1; i--; )
1138 if (signals [signum].gotsig) 1424 if (expect_false (signals [i].pending))
1139 ev_feed_signal_event (EV_A_ signum + 1); 1425 ev_feed_signal_event (EV_A_ i + 1);
1140 } 1426 }
1427#endif
1141 1428
1142#if EV_ASYNC_ENABLE 1429#if EV_ASYNC_ENABLE
1143 if (gotasync) 1430 if (async_pending)
1144 { 1431 {
1145 int i; 1432 async_pending = 0;
1146 gotasync = 0;
1147 1433
1148 for (i = asynccnt; i--; ) 1434 for (i = asynccnt; i--; )
1149 if (asyncs [i]->sent) 1435 if (asyncs [i]->sent)
1150 { 1436 {
1151 asyncs [i]->sent = 0; 1437 asyncs [i]->sent = 0;
… …
1155#endif 1441#endif
1156} 1442}
1157 1443
1158/*****************************************************************************/ 1444/*****************************************************************************/
1159 1445
1446void
1447ev_feed_signal (int signum)
1448{
1449#if EV_MULTIPLICITY
1450 EV_P = signals [signum - 1].loop;
1451
1452 if (!EV_A)
1453 return;
1454#endif
1455
1456 signals [signum - 1].pending = 1;
1457 evpipe_write (EV_A_ &sig_pending);
1458}
1459
1160static void 1460static void
1161ev_sighandler (int signum) 1461ev_sighandler (int signum)
1162{ 1462{
1163#if EV_MULTIPLICITY
1164 struct ev_loop *loop = &default_loop_struct;
1165#endif
1166
1167#if _WIN32 1463#ifdef _WIN32
1168 signal (signum, ev_sighandler); 1464 signal (signum, ev_sighandler);
1169#endif 1465#endif
1170 1466
1171 signals [signum - 1].gotsig = 1; 1467 ev_feed_signal (signum);
1172 evpipe_write (EV_A_ &gotsig);
1173} 1468}
1174 1469
1175void noinline 1470void noinline
1176ev_feed_signal_event (EV_P_ int signum) 1471ev_feed_signal_event (EV_P_ int signum)
1177{ 1472{
1178 WL w; 1473 WL w;
1179 1474
1475 if (expect_false (signum <= 0 || signum > EV_NSIG))
1476 return;
1477
1478 --signum;
1479
1180#if EV_MULTIPLICITY 1480#if EV_MULTIPLICITY
1181 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1481 /* it is permissible to try to feed a signal to the wrong loop */
1182#endif 1482 /* or, likely more useful, feeding a signal nobody is waiting for */
1183 1483
1184 --signum; 1484 if (expect_false (signals [signum].loop != EV_A))
1185
1186 if (signum < 0 || signum >= signalmax)
1187 return; 1485 return;
1486#endif
1188 1487
1189 signals [signum].gotsig = 0; 1488 signals [signum].pending = 0;
1190 1489
1191 for (w = signals [signum].head; w; w = w->next) 1490 for (w = signals [signum].head; w; w = w->next)
1192 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1491 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1193} 1492}
1194 1493
1494#if EV_USE_SIGNALFD
1495static void
1496sigfdcb (EV_P_ ev_io *iow, int revents)
1497{
1498 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1499
1500 for (;;)
1501 {
1502 ssize_t res = read (sigfd, si, sizeof (si));
1503
1504 /* not ISO-C, as res might be -1, but works with SuS */
1505 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1506 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1507
1508 if (res < (ssize_t)sizeof (si))
1509 break;
1510 }
1511}
1512#endif
1513
1514#endif
1515
1195/*****************************************************************************/ 1516/*****************************************************************************/
1196 1517
1518#if EV_CHILD_ENABLE
1197static WL childs [EV_PID_HASHSIZE]; 1519static WL childs [EV_PID_HASHSIZE];
1198
1199#ifndef _WIN32
1200 1520
1201static ev_signal childev; 1521static ev_signal childev;
1202 1522
1203#ifndef WIFCONTINUED 1523#ifndef WIFCONTINUED
1204# define WIFCONTINUED(status) 0 1524# define WIFCONTINUED(status) 0
… …
1209child_reap (EV_P_ int chain, int pid, int status) 1529child_reap (EV_P_ int chain, int pid, int status)
1210{ 1530{
1211 ev_child *w; 1531 ev_child *w;
1212 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1532 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1213 1533
1214 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1534 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1215 { 1535 {
1216 if ((w->pid == pid || !w->pid) 1536 if ((w->pid == pid || !w->pid)
1217 && (!traced || (w->flags & 1))) 1537 && (!traced || (w->flags & 1)))
1218 { 1538 {
1219 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1539 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1244 /* make sure we are called again until all children have been reaped */ 1564 /* make sure we are called again until all children have been reaped */
1245 /* we need to do it this way so that the callback gets called before we continue */ 1565 /* we need to do it this way so that the callback gets called before we continue */
1246 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1566 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1247 1567
1248 child_reap (EV_A_ pid, pid, status); 1568 child_reap (EV_A_ pid, pid, status);
1249 if (EV_PID_HASHSIZE > 1) 1569 if ((EV_PID_HASHSIZE) > 1)
1250 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1570 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1251} 1571}
1252 1572
1253#endif 1573#endif
1254 1574
1255/*****************************************************************************/ 1575/*****************************************************************************/
1256 1576
1577#if EV_USE_IOCP
1578# include "ev_iocp.c"
1579#endif
1257#if EV_USE_PORT 1580#if EV_USE_PORT
1258# include "ev_port.c" 1581# include "ev_port.c"
1259#endif 1582#endif
1260#if EV_USE_KQUEUE 1583#if EV_USE_KQUEUE
1261# include "ev_kqueue.c" 1584# include "ev_kqueue.c"
… …
1321#ifdef __APPLE__ 1644#ifdef __APPLE__
1322 /* only select works correctly on that "unix-certified" platform */ 1645 /* only select works correctly on that "unix-certified" platform */
1323 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1646 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1324 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1647 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1325#endif 1648#endif
1649#ifdef __FreeBSD__
1650 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1651#endif
1326 1652
1327 return flags; 1653 return flags;
1328} 1654}
1329 1655
1330unsigned int 1656unsigned int
1331ev_embeddable_backends (void) 1657ev_embeddable_backends (void)
1332{ 1658{
1333 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1659 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1334 1660
1335 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1661 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1336 /* please fix it and tell me how to detect the fix */ 1662 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1337 flags &= ~EVBACKEND_EPOLL; 1663 flags &= ~EVBACKEND_EPOLL;
1338 1664
1339 return flags; 1665 return flags;
1340} 1666}
1341 1667
1342unsigned int 1668unsigned int
1343ev_backend (EV_P) 1669ev_backend (EV_P)
1344{ 1670{
1345 return backend; 1671 return backend;
1346} 1672}
1347 1673
1674#if EV_FEATURE_API
1348unsigned int 1675unsigned int
1349ev_loop_count (EV_P) 1676ev_iteration (EV_P)
1350{ 1677{
1351 return loop_count; 1678 return loop_count;
1352} 1679}
1353 1680
1681unsigned int
1682ev_depth (EV_P)
1683{
1684 return loop_depth;
1685}
1686
1354void 1687void
1355ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1688ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1356{ 1689{
1357 io_blocktime = interval; 1690 io_blocktime = interval;
1358} 1691}
… …
1360void 1693void
1361ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1694ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1362{ 1695{
1363 timeout_blocktime = interval; 1696 timeout_blocktime = interval;
1364} 1697}
1698
1699void
1700ev_set_userdata (EV_P_ void *data)
1701{
1702 userdata = data;
1703}
1704
1705void *
1706ev_userdata (EV_P)
1707{
1708 return userdata;
1709}
1710
1711void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1712{
1713 invoke_cb = invoke_pending_cb;
1714}
1715
1716void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1717{
1718 release_cb = release;
1719 acquire_cb = acquire;
1720}
1721#endif
1365 1722
1366/* initialise a loop structure, must be zero-initialised */ 1723/* initialise a loop structure, must be zero-initialised */
1367static void noinline 1724static void noinline
1368loop_init (EV_P_ unsigned int flags) 1725loop_init (EV_P_ unsigned int flags)
1369{ 1726{
1370 if (!backend) 1727 if (!backend)
1371 { 1728 {
1729 origflags = flags;
1730
1372#if EV_USE_REALTIME 1731#if EV_USE_REALTIME
1373 if (!have_realtime) 1732 if (!have_realtime)
1374 { 1733 {
1375 struct timespec ts; 1734 struct timespec ts;
1376 1735
… …
1387 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1746 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1388 have_monotonic = 1; 1747 have_monotonic = 1;
1389 } 1748 }
1390#endif 1749#endif
1391 1750
1751 /* pid check not overridable via env */
1752#ifndef _WIN32
1753 if (flags & EVFLAG_FORKCHECK)
1754 curpid = getpid ();
1755#endif
1756
1757 if (!(flags & EVFLAG_NOENV)
1758 && !enable_secure ()
1759 && getenv ("LIBEV_FLAGS"))
1760 flags = atoi (getenv ("LIBEV_FLAGS"));
1761
1392 ev_rt_now = ev_time (); 1762 ev_rt_now = ev_time ();
1393 mn_now = get_clock (); 1763 mn_now = get_clock ();
1394 now_floor = mn_now; 1764 now_floor = mn_now;
1395 rtmn_diff = ev_rt_now - mn_now; 1765 rtmn_diff = ev_rt_now - mn_now;
1766#if EV_FEATURE_API
1767 invoke_cb = ev_invoke_pending;
1768#endif
1396 1769
1397 io_blocktime = 0.; 1770 io_blocktime = 0.;
1398 timeout_blocktime = 0.; 1771 timeout_blocktime = 0.;
1399 backend = 0; 1772 backend = 0;
1400 backend_fd = -1; 1773 backend_fd = -1;
1401 gotasync = 0; 1774 sig_pending = 0;
1775#if EV_ASYNC_ENABLE
1776 async_pending = 0;
1777#endif
1402#if EV_USE_INOTIFY 1778#if EV_USE_INOTIFY
1403 fs_fd = -2; 1779 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1404#endif 1780#endif
1405 1781#if EV_USE_SIGNALFD
1406 /* pid check not overridable via env */ 1782 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1407#ifndef _WIN32
1408 if (flags & EVFLAG_FORKCHECK)
1409 curpid = getpid ();
1410#endif 1783#endif
1411 1784
1412 if (!(flags & EVFLAG_NOENV) 1785 if (!(flags & EVBACKEND_MASK))
1413 && !enable_secure ()
1414 && getenv ("LIBEV_FLAGS"))
1415 flags = atoi (getenv ("LIBEV_FLAGS"));
1416
1417 if (!(flags & 0x0000ffffU))
1418 flags |= ev_recommended_backends (); 1786 flags |= ev_recommended_backends ();
1419 1787
1788#if EV_USE_IOCP
1789 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1790#endif
1420#if EV_USE_PORT 1791#if EV_USE_PORT
1421 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1792 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1422#endif 1793#endif
1423#if EV_USE_KQUEUE 1794#if EV_USE_KQUEUE
1424 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1795 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1433 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1804 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1434#endif 1805#endif
1435 1806
1436 ev_prepare_init (&pending_w, pendingcb); 1807 ev_prepare_init (&pending_w, pendingcb);
1437 1808
1809#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1438 ev_init (&pipe_w, pipecb); 1810 ev_init (&pipe_w, pipecb);
1439 ev_set_priority (&pipe_w, EV_MAXPRI); 1811 ev_set_priority (&pipe_w, EV_MAXPRI);
1812#endif
1440 } 1813 }
1441} 1814}
1442 1815
1443/* free up a loop structure */ 1816/* free up a loop structure */
1444static void noinline 1817void
1445loop_destroy (EV_P) 1818ev_loop_destroy (EV_P)
1446{ 1819{
1447 int i; 1820 int i;
1448 1821
1822#if EV_MULTIPLICITY
1823 /* mimic free (0) */
1824 if (!EV_A)
1825 return;
1826#endif
1827
1828#if EV_CLEANUP_ENABLE
1829 /* queue cleanup watchers (and execute them) */
1830 if (expect_false (cleanupcnt))
1831 {
1832 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1833 EV_INVOKE_PENDING;
1834 }
1835#endif
1836
1837#if EV_CHILD_ENABLE
1838 if (ev_is_active (&childev))
1839 {
1840 ev_ref (EV_A); /* child watcher */
1841 ev_signal_stop (EV_A_ &childev);
1842 }
1843#endif
1844
1449 if (ev_is_active (&pipe_w)) 1845 if (ev_is_active (&pipe_w))
1450 { 1846 {
1451 ev_ref (EV_A); /* signal watcher */ 1847 /*ev_ref (EV_A);*/
1452 ev_io_stop (EV_A_ &pipe_w); 1848 /*ev_io_stop (EV_A_ &pipe_w);*/
1453 1849
1454#if EV_USE_EVENTFD 1850#if EV_USE_EVENTFD
1455 if (evfd >= 0) 1851 if (evfd >= 0)
1456 close (evfd); 1852 close (evfd);
1457#endif 1853#endif
1458 1854
1459 if (evpipe [0] >= 0) 1855 if (evpipe [0] >= 0)
1460 { 1856 {
1461 close (evpipe [0]); 1857 EV_WIN32_CLOSE_FD (evpipe [0]);
1462 close (evpipe [1]); 1858 EV_WIN32_CLOSE_FD (evpipe [1]);
1463 } 1859 }
1464 } 1860 }
1861
1862#if EV_USE_SIGNALFD
1863 if (ev_is_active (&sigfd_w))
1864 close (sigfd);
1865#endif
1465 1866
1466#if EV_USE_INOTIFY 1867#if EV_USE_INOTIFY
1467 if (fs_fd >= 0) 1868 if (fs_fd >= 0)
1468 close (fs_fd); 1869 close (fs_fd);
1469#endif 1870#endif
1470 1871
1471 if (backend_fd >= 0) 1872 if (backend_fd >= 0)
1472 close (backend_fd); 1873 close (backend_fd);
1473 1874
1875#if EV_USE_IOCP
1876 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1877#endif
1474#if EV_USE_PORT 1878#if EV_USE_PORT
1475 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1879 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1476#endif 1880#endif
1477#if EV_USE_KQUEUE 1881#if EV_USE_KQUEUE
1478 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1882 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1493#if EV_IDLE_ENABLE 1897#if EV_IDLE_ENABLE
1494 array_free (idle, [i]); 1898 array_free (idle, [i]);
1495#endif 1899#endif
1496 } 1900 }
1497 1901
1498 ev_free (anfds); anfdmax = 0; 1902 ev_free (anfds); anfds = 0; anfdmax = 0;
1499 1903
1500 /* have to use the microsoft-never-gets-it-right macro */ 1904 /* have to use the microsoft-never-gets-it-right macro */
1501 array_free (rfeed, EMPTY); 1905 array_free (rfeed, EMPTY);
1502 array_free (fdchange, EMPTY); 1906 array_free (fdchange, EMPTY);
1503 array_free (timer, EMPTY); 1907 array_free (timer, EMPTY);
… …
1505 array_free (periodic, EMPTY); 1909 array_free (periodic, EMPTY);
1506#endif 1910#endif
1507#if EV_FORK_ENABLE 1911#if EV_FORK_ENABLE
1508 array_free (fork, EMPTY); 1912 array_free (fork, EMPTY);
1509#endif 1913#endif
1914#if EV_CLEANUP_ENABLE
1915 array_free (cleanup, EMPTY);
1916#endif
1510 array_free (prepare, EMPTY); 1917 array_free (prepare, EMPTY);
1511 array_free (check, EMPTY); 1918 array_free (check, EMPTY);
1512#if EV_ASYNC_ENABLE 1919#if EV_ASYNC_ENABLE
1513 array_free (async, EMPTY); 1920 array_free (async, EMPTY);
1514#endif 1921#endif
1515 1922
1516 backend = 0; 1923 backend = 0;
1924
1925#if EV_MULTIPLICITY
1926 if (ev_is_default_loop (EV_A))
1927#endif
1928 ev_default_loop_ptr = 0;
1929#if EV_MULTIPLICITY
1930 else
1931 ev_free (EV_A);
1932#endif
1517} 1933}
1518 1934
1519#if EV_USE_INOTIFY 1935#if EV_USE_INOTIFY
1520inline_size void infy_fork (EV_P); 1936inline_size void infy_fork (EV_P);
1521#endif 1937#endif
… …
1538 1954
1539 if (ev_is_active (&pipe_w)) 1955 if (ev_is_active (&pipe_w))
1540 { 1956 {
1541 /* this "locks" the handlers against writing to the pipe */ 1957 /* this "locks" the handlers against writing to the pipe */
1542 /* while we modify the fd vars */ 1958 /* while we modify the fd vars */
1543 gotsig = 1; 1959 sig_pending = 1;
1544#if EV_ASYNC_ENABLE 1960#if EV_ASYNC_ENABLE
1545 gotasync = 1; 1961 async_pending = 1;
1546#endif 1962#endif
1547 1963
1548 ev_ref (EV_A); 1964 ev_ref (EV_A);
1549 ev_io_stop (EV_A_ &pipe_w); 1965 ev_io_stop (EV_A_ &pipe_w);
1550 1966
… …
1553 close (evfd); 1969 close (evfd);
1554#endif 1970#endif
1555 1971
1556 if (evpipe [0] >= 0) 1972 if (evpipe [0] >= 0)
1557 { 1973 {
1558 close (evpipe [0]); 1974 EV_WIN32_CLOSE_FD (evpipe [0]);
1559 close (evpipe [1]); 1975 EV_WIN32_CLOSE_FD (evpipe [1]);
1560 } 1976 }
1561 1977
1978#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1562 evpipe_init (EV_A); 1979 evpipe_init (EV_A);
1563 /* now iterate over everything, in case we missed something */ 1980 /* now iterate over everything, in case we missed something */
1564 pipecb (EV_A_ &pipe_w, EV_READ); 1981 pipecb (EV_A_ &pipe_w, EV_READ);
1982#endif
1565 } 1983 }
1566 1984
1567 postfork = 0; 1985 postfork = 0;
1568} 1986}
1569 1987
1570#if EV_MULTIPLICITY 1988#if EV_MULTIPLICITY
1571 1989
1572struct ev_loop * 1990struct ev_loop *
1573ev_loop_new (unsigned int flags) 1991ev_loop_new (unsigned int flags)
1574{ 1992{
1575 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1993 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1576 1994
1577 memset (loop, 0, sizeof (struct ev_loop)); 1995 memset (EV_A, 0, sizeof (struct ev_loop));
1578
1579 loop_init (EV_A_ flags); 1996 loop_init (EV_A_ flags);
1580 1997
1581 if (ev_backend (EV_A)) 1998 if (ev_backend (EV_A))
1582 return loop; 1999 return EV_A;
1583 2000
2001 ev_free (EV_A);
1584 return 0; 2002 return 0;
1585} 2003}
1586 2004
1587void 2005#endif /* multiplicity */
1588ev_loop_destroy (EV_P)
1589{
1590 loop_destroy (EV_A);
1591 ev_free (loop);
1592}
1593
1594void
1595ev_loop_fork (EV_P)
1596{
1597 postfork = 1; /* must be in line with ev_default_fork */
1598}
1599 2006
1600#if EV_VERIFY 2007#if EV_VERIFY
1601static void noinline 2008static void noinline
1602verify_watcher (EV_P_ W w) 2009verify_watcher (EV_P_ W w)
1603{ 2010{
… …
1631 verify_watcher (EV_A_ ws [cnt]); 2038 verify_watcher (EV_A_ ws [cnt]);
1632 } 2039 }
1633} 2040}
1634#endif 2041#endif
1635 2042
2043#if EV_FEATURE_API
1636void 2044void
1637ev_loop_verify (EV_P) 2045ev_verify (EV_P)
1638{ 2046{
1639#if EV_VERIFY 2047#if EV_VERIFY
1640 int i; 2048 int i;
1641 WL w; 2049 WL w;
1642 2050
… …
1676#if EV_FORK_ENABLE 2084#if EV_FORK_ENABLE
1677 assert (forkmax >= forkcnt); 2085 assert (forkmax >= forkcnt);
1678 array_verify (EV_A_ (W *)forks, forkcnt); 2086 array_verify (EV_A_ (W *)forks, forkcnt);
1679#endif 2087#endif
1680 2088
2089#if EV_CLEANUP_ENABLE
2090 assert (cleanupmax >= cleanupcnt);
2091 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2092#endif
2093
1681#if EV_ASYNC_ENABLE 2094#if EV_ASYNC_ENABLE
1682 assert (asyncmax >= asynccnt); 2095 assert (asyncmax >= asynccnt);
1683 array_verify (EV_A_ (W *)asyncs, asynccnt); 2096 array_verify (EV_A_ (W *)asyncs, asynccnt);
1684#endif 2097#endif
1685 2098
2099#if EV_PREPARE_ENABLE
1686 assert (preparemax >= preparecnt); 2100 assert (preparemax >= preparecnt);
1687 array_verify (EV_A_ (W *)prepares, preparecnt); 2101 array_verify (EV_A_ (W *)prepares, preparecnt);
2102#endif
1688 2103
2104#if EV_CHECK_ENABLE
1689 assert (checkmax >= checkcnt); 2105 assert (checkmax >= checkcnt);
1690 array_verify (EV_A_ (W *)checks, checkcnt); 2106 array_verify (EV_A_ (W *)checks, checkcnt);
2107#endif
1691 2108
1692# if 0 2109# if 0
2110#if EV_CHILD_ENABLE
1693 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2111 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1694 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2112 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2113#endif
1695# endif 2114# endif
1696#endif 2115#endif
1697} 2116}
1698 2117#endif
1699#endif /* multiplicity */
1700 2118
1701#if EV_MULTIPLICITY 2119#if EV_MULTIPLICITY
1702struct ev_loop * 2120struct ev_loop *
1703ev_default_loop_init (unsigned int flags)
1704#else 2121#else
1705int 2122int
2123#endif
1706ev_default_loop (unsigned int flags) 2124ev_default_loop (unsigned int flags)
1707#endif
1708{ 2125{
1709 if (!ev_default_loop_ptr) 2126 if (!ev_default_loop_ptr)
1710 { 2127 {
1711#if EV_MULTIPLICITY 2128#if EV_MULTIPLICITY
1712 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2129 EV_P = ev_default_loop_ptr = &default_loop_struct;
1713#else 2130#else
1714 ev_default_loop_ptr = 1; 2131 ev_default_loop_ptr = 1;
1715#endif 2132#endif
1716 2133
1717 loop_init (EV_A_ flags); 2134 loop_init (EV_A_ flags);
1718 2135
1719 if (ev_backend (EV_A)) 2136 if (ev_backend (EV_A))
1720 { 2137 {
1721#ifndef _WIN32 2138#if EV_CHILD_ENABLE
1722 ev_signal_init (&childev, childcb, SIGCHLD); 2139 ev_signal_init (&childev, childcb, SIGCHLD);
1723 ev_set_priority (&childev, EV_MAXPRI); 2140 ev_set_priority (&childev, EV_MAXPRI);
1724 ev_signal_start (EV_A_ &childev); 2141 ev_signal_start (EV_A_ &childev);
1725 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2142 ev_unref (EV_A); /* child watcher should not keep loop alive */
1726#endif 2143#endif
… …
1731 2148
1732 return ev_default_loop_ptr; 2149 return ev_default_loop_ptr;
1733} 2150}
1734 2151
1735void 2152void
1736ev_default_destroy (void) 2153ev_loop_fork (EV_P)
1737{ 2154{
1738#if EV_MULTIPLICITY
1739 struct ev_loop *loop = ev_default_loop_ptr;
1740#endif
1741
1742 ev_default_loop_ptr = 0;
1743
1744#ifndef _WIN32
1745 ev_ref (EV_A); /* child watcher */
1746 ev_signal_stop (EV_A_ &childev);
1747#endif
1748
1749 loop_destroy (EV_A);
1750}
1751
1752void
1753ev_default_fork (void)
1754{
1755#if EV_MULTIPLICITY
1756 struct ev_loop *loop = ev_default_loop_ptr;
1757#endif
1758
1759 postfork = 1; /* must be in line with ev_loop_fork */ 2155 postfork = 1; /* must be in line with ev_default_fork */
1760} 2156}
1761 2157
1762/*****************************************************************************/ 2158/*****************************************************************************/
1763 2159
1764void 2160void
1765ev_invoke (EV_P_ void *w, int revents) 2161ev_invoke (EV_P_ void *w, int revents)
1766{ 2162{
1767 EV_CB_INVOKE ((W)w, revents); 2163 EV_CB_INVOKE ((W)w, revents);
1768} 2164}
1769 2165
1770inline_speed void 2166unsigned int
1771call_pending (EV_P) 2167ev_pending_count (EV_P)
2168{
2169 int pri;
2170 unsigned int count = 0;
2171
2172 for (pri = NUMPRI; pri--; )
2173 count += pendingcnt [pri];
2174
2175 return count;
2176}
2177
2178void noinline
2179ev_invoke_pending (EV_P)
1772{ 2180{
1773 int pri; 2181 int pri;
1774 2182
1775 for (pri = NUMPRI; pri--; ) 2183 for (pri = NUMPRI; pri--; )
1776 while (pendingcnt [pri]) 2184 while (pendingcnt [pri])
1777 { 2185 {
1778 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2186 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1779
1780 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1781 /* ^ this is no longer true, as pending_w could be here */
1782 2187
1783 p->w->pending = 0; 2188 p->w->pending = 0;
1784 EV_CB_INVOKE (p->w, p->events); 2189 EV_CB_INVOKE (p->w, p->events);
1785 EV_FREQUENT_CHECK; 2190 EV_FREQUENT_CHECK;
1786 } 2191 }
… …
1843 EV_FREQUENT_CHECK; 2248 EV_FREQUENT_CHECK;
1844 feed_reverse (EV_A_ (W)w); 2249 feed_reverse (EV_A_ (W)w);
1845 } 2250 }
1846 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2251 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1847 2252
1848 feed_reverse_done (EV_A_ EV_TIMEOUT); 2253 feed_reverse_done (EV_A_ EV_TIMER);
1849 } 2254 }
1850} 2255}
1851 2256
1852#if EV_PERIODIC_ENABLE 2257#if EV_PERIODIC_ENABLE
2258
2259static void noinline
2260periodic_recalc (EV_P_ ev_periodic *w)
2261{
2262 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2263 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2264
2265 /* the above almost always errs on the low side */
2266 while (at <= ev_rt_now)
2267 {
2268 ev_tstamp nat = at + w->interval;
2269
2270 /* when resolution fails us, we use ev_rt_now */
2271 if (expect_false (nat == at))
2272 {
2273 at = ev_rt_now;
2274 break;
2275 }
2276
2277 at = nat;
2278 }
2279
2280 ev_at (w) = at;
2281}
2282
1853/* make periodics pending */ 2283/* make periodics pending */
1854inline_size void 2284inline_size void
1855periodics_reify (EV_P) 2285periodics_reify (EV_P)
1856{ 2286{
1857 EV_FREQUENT_CHECK; 2287 EV_FREQUENT_CHECK;
… …
1876 ANHE_at_cache (periodics [HEAP0]); 2306 ANHE_at_cache (periodics [HEAP0]);
1877 downheap (periodics, periodiccnt, HEAP0); 2307 downheap (periodics, periodiccnt, HEAP0);
1878 } 2308 }
1879 else if (w->interval) 2309 else if (w->interval)
1880 { 2310 {
1881 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2311 periodic_recalc (EV_A_ w);
1882 /* if next trigger time is not sufficiently in the future, put it there */
1883 /* this might happen because of floating point inexactness */
1884 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1885 {
1886 ev_at (w) += w->interval;
1887
1888 /* if interval is unreasonably low we might still have a time in the past */
1889 /* so correct this. this will make the periodic very inexact, but the user */
1890 /* has effectively asked to get triggered more often than possible */
1891 if (ev_at (w) < ev_rt_now)
1892 ev_at (w) = ev_rt_now;
1893 }
1894
1895 ANHE_at_cache (periodics [HEAP0]); 2312 ANHE_at_cache (periodics [HEAP0]);
1896 downheap (periodics, periodiccnt, HEAP0); 2313 downheap (periodics, periodiccnt, HEAP0);
1897 } 2314 }
1898 else 2315 else
1899 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2316 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1906 feed_reverse_done (EV_A_ EV_PERIODIC); 2323 feed_reverse_done (EV_A_ EV_PERIODIC);
1907 } 2324 }
1908} 2325}
1909 2326
1910/* simply recalculate all periodics */ 2327/* simply recalculate all periodics */
1911/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2328/* TODO: maybe ensure that at least one event happens when jumping forward? */
1912static void noinline 2329static void noinline
1913periodics_reschedule (EV_P) 2330periodics_reschedule (EV_P)
1914{ 2331{
1915 int i; 2332 int i;
1916 2333
… …
1920 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2337 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1921 2338
1922 if (w->reschedule_cb) 2339 if (w->reschedule_cb)
1923 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2340 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1924 else if (w->interval) 2341 else if (w->interval)
1925 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2342 periodic_recalc (EV_A_ w);
1926 2343
1927 ANHE_at_cache (periodics [i]); 2344 ANHE_at_cache (periodics [i]);
1928 } 2345 }
1929 2346
1930 reheap (periodics, periodiccnt); 2347 reheap (periodics, periodiccnt);
… …
1944 ANHE_at_cache (*he); 2361 ANHE_at_cache (*he);
1945 } 2362 }
1946} 2363}
1947 2364
1948/* fetch new monotonic and realtime times from the kernel */ 2365/* fetch new monotonic and realtime times from the kernel */
1949/* also detetc if there was a timejump, and act accordingly */ 2366/* also detect if there was a timejump, and act accordingly */
1950inline_speed void 2367inline_speed void
1951time_update (EV_P_ ev_tstamp max_block) 2368time_update (EV_P_ ev_tstamp max_block)
1952{ 2369{
1953#if EV_USE_MONOTONIC 2370#if EV_USE_MONOTONIC
1954 if (expect_true (have_monotonic)) 2371 if (expect_true (have_monotonic))
… …
1977 * doesn't hurt either as we only do this on time-jumps or 2394 * doesn't hurt either as we only do this on time-jumps or
1978 * in the unlikely event of having been preempted here. 2395 * in the unlikely event of having been preempted here.
1979 */ 2396 */
1980 for (i = 4; --i; ) 2397 for (i = 4; --i; )
1981 { 2398 {
2399 ev_tstamp diff;
1982 rtmn_diff = ev_rt_now - mn_now; 2400 rtmn_diff = ev_rt_now - mn_now;
1983 2401
2402 diff = odiff - rtmn_diff;
2403
1984 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2404 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1985 return; /* all is well */ 2405 return; /* all is well */
1986 2406
1987 ev_rt_now = ev_time (); 2407 ev_rt_now = ev_time ();
1988 mn_now = get_clock (); 2408 mn_now = get_clock ();
1989 now_floor = mn_now; 2409 now_floor = mn_now;
… …
2011 2431
2012 mn_now = ev_rt_now; 2432 mn_now = ev_rt_now;
2013 } 2433 }
2014} 2434}
2015 2435
2016static int loop_done;
2017
2018void 2436void
2019ev_loop (EV_P_ int flags) 2437ev_run (EV_P_ int flags)
2020{ 2438{
2439#if EV_FEATURE_API
2440 ++loop_depth;
2441#endif
2442
2443 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2444
2021 loop_done = EVUNLOOP_CANCEL; 2445 loop_done = EVBREAK_CANCEL;
2022 2446
2023 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2447 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2024 2448
2025 do 2449 do
2026 { 2450 {
2027#if EV_VERIFY >= 2 2451#if EV_VERIFY >= 2
2028 ev_loop_verify (EV_A); 2452 ev_verify (EV_A);
2029#endif 2453#endif
2030 2454
2031#ifndef _WIN32 2455#ifndef _WIN32
2032 if (expect_false (curpid)) /* penalise the forking check even more */ 2456 if (expect_false (curpid)) /* penalise the forking check even more */
2033 if (expect_false (getpid () != curpid)) 2457 if (expect_false (getpid () != curpid))
… …
2041 /* we might have forked, so queue fork handlers */ 2465 /* we might have forked, so queue fork handlers */
2042 if (expect_false (postfork)) 2466 if (expect_false (postfork))
2043 if (forkcnt) 2467 if (forkcnt)
2044 { 2468 {
2045 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2469 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2046 call_pending (EV_A); 2470 EV_INVOKE_PENDING;
2047 } 2471 }
2048#endif 2472#endif
2049 2473
2474#if EV_PREPARE_ENABLE
2050 /* queue prepare watchers (and execute them) */ 2475 /* queue prepare watchers (and execute them) */
2051 if (expect_false (preparecnt)) 2476 if (expect_false (preparecnt))
2052 { 2477 {
2053 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2478 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2054 call_pending (EV_A); 2479 EV_INVOKE_PENDING;
2055 } 2480 }
2481#endif
2482
2483 if (expect_false (loop_done))
2484 break;
2056 2485
2057 /* we might have forked, so reify kernel state if necessary */ 2486 /* we might have forked, so reify kernel state if necessary */
2058 if (expect_false (postfork)) 2487 if (expect_false (postfork))
2059 loop_fork (EV_A); 2488 loop_fork (EV_A);
2060 2489
… …
2064 /* calculate blocking time */ 2493 /* calculate blocking time */
2065 { 2494 {
2066 ev_tstamp waittime = 0.; 2495 ev_tstamp waittime = 0.;
2067 ev_tstamp sleeptime = 0.; 2496 ev_tstamp sleeptime = 0.;
2068 2497
2498 /* remember old timestamp for io_blocktime calculation */
2499 ev_tstamp prev_mn_now = mn_now;
2500
2501 /* update time to cancel out callback processing overhead */
2502 time_update (EV_A_ 1e100);
2503
2069 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2504 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
2070 { 2505 {
2071 /* update time to cancel out callback processing overhead */
2072 time_update (EV_A_ 1e100);
2073
2074 waittime = MAX_BLOCKTIME; 2506 waittime = MAX_BLOCKTIME;
2075 2507
2076 if (timercnt) 2508 if (timercnt)
2077 { 2509 {
2078 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2510 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_mintime;
2079 if (waittime > to) waittime = to; 2511 if (waittime > to) waittime = to;
2080 } 2512 }
2081 2513
2082#if EV_PERIODIC_ENABLE 2514#if EV_PERIODIC_ENABLE
2083 if (periodiccnt) 2515 if (periodiccnt)
2084 { 2516 {
2085 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2517 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_mintime;
2086 if (waittime > to) waittime = to; 2518 if (waittime > to) waittime = to;
2087 } 2519 }
2088#endif 2520#endif
2089 2521
2522 /* don't let timeouts decrease the waittime below timeout_blocktime */
2090 if (expect_false (waittime < timeout_blocktime)) 2523 if (expect_false (waittime < timeout_blocktime))
2091 waittime = timeout_blocktime; 2524 waittime = timeout_blocktime;
2092 2525
2093 sleeptime = waittime - backend_fudge; 2526 /* extra check because io_blocktime is commonly 0 */
2094
2095 if (expect_true (sleeptime > io_blocktime)) 2527 if (expect_false (io_blocktime))
2096 sleeptime = io_blocktime;
2097
2098 if (sleeptime)
2099 { 2528 {
2529 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2530
2531 if (sleeptime > waittime - backend_mintime)
2532 sleeptime = waittime - backend_mintime;
2533
2534 if (expect_true (sleeptime > 0.))
2535 {
2100 ev_sleep (sleeptime); 2536 ev_sleep (sleeptime);
2101 waittime -= sleeptime; 2537 waittime -= sleeptime;
2538 }
2102 } 2539 }
2103 } 2540 }
2104 2541
2542#if EV_FEATURE_API
2105 ++loop_count; 2543 ++loop_count;
2544#endif
2545 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2106 backend_poll (EV_A_ waittime); 2546 backend_poll (EV_A_ waittime);
2547 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2107 2548
2108 /* update ev_rt_now, do magic */ 2549 /* update ev_rt_now, do magic */
2109 time_update (EV_A_ waittime + sleeptime); 2550 time_update (EV_A_ waittime + sleeptime);
2110 } 2551 }
2111 2552
… …
2118#if EV_IDLE_ENABLE 2559#if EV_IDLE_ENABLE
2119 /* queue idle watchers unless other events are pending */ 2560 /* queue idle watchers unless other events are pending */
2120 idle_reify (EV_A); 2561 idle_reify (EV_A);
2121#endif 2562#endif
2122 2563
2564#if EV_CHECK_ENABLE
2123 /* queue check watchers, to be executed first */ 2565 /* queue check watchers, to be executed first */
2124 if (expect_false (checkcnt)) 2566 if (expect_false (checkcnt))
2125 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2567 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2568#endif
2126 2569
2127 call_pending (EV_A); 2570 EV_INVOKE_PENDING;
2128 } 2571 }
2129 while (expect_true ( 2572 while (expect_true (
2130 activecnt 2573 activecnt
2131 && !loop_done 2574 && !loop_done
2132 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2575 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2133 )); 2576 ));
2134 2577
2135 if (loop_done == EVUNLOOP_ONE) 2578 if (loop_done == EVBREAK_ONE)
2136 loop_done = EVUNLOOP_CANCEL; 2579 loop_done = EVBREAK_CANCEL;
2137}
2138 2580
2581#if EV_FEATURE_API
2582 --loop_depth;
2583#endif
2584}
2585
2139void 2586void
2140ev_unloop (EV_P_ int how) 2587ev_break (EV_P_ int how)
2141{ 2588{
2142 loop_done = how; 2589 loop_done = how;
2143} 2590}
2144 2591
2145void 2592void
… …
2192inline_size void 2639inline_size void
2193wlist_del (WL *head, WL elem) 2640wlist_del (WL *head, WL elem)
2194{ 2641{
2195 while (*head) 2642 while (*head)
2196 { 2643 {
2197 if (*head == elem) 2644 if (expect_true (*head == elem))
2198 { 2645 {
2199 *head = elem->next; 2646 *head = elem->next;
2200 return; 2647 break;
2201 } 2648 }
2202 2649
2203 head = &(*head)->next; 2650 head = &(*head)->next;
2204 } 2651 }
2205} 2652}
… …
2233} 2680}
2234 2681
2235inline_size void 2682inline_size void
2236pri_adjust (EV_P_ W w) 2683pri_adjust (EV_P_ W w)
2237{ 2684{
2238 int pri = w->priority; 2685 int pri = ev_priority (w);
2239 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2686 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2240 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2687 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2241 w->priority = pri; 2688 ev_set_priority (w, pri);
2242} 2689}
2243 2690
2244inline_speed void 2691inline_speed void
2245ev_start (EV_P_ W w, int active) 2692ev_start (EV_P_ W w, int active)
2246{ 2693{
… …
2265 2712
2266 if (expect_false (ev_is_active (w))) 2713 if (expect_false (ev_is_active (w)))
2267 return; 2714 return;
2268 2715
2269 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2716 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2270 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2717 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2271 2718
2272 EV_FREQUENT_CHECK; 2719 EV_FREQUENT_CHECK;
2273 2720
2274 ev_start (EV_A_ (W)w, 1); 2721 ev_start (EV_A_ (W)w, 1);
2275 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2722 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2276 wlist_add (&anfds[fd].head, (WL)w); 2723 wlist_add (&anfds[fd].head, (WL)w);
2277 2724
2278 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 2725 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2279 w->events &= ~EV__IOFDSET; 2726 w->events &= ~EV__IOFDSET;
2280 2727
2281 EV_FREQUENT_CHECK; 2728 EV_FREQUENT_CHECK;
2282} 2729}
2283 2730
… …
2293 EV_FREQUENT_CHECK; 2740 EV_FREQUENT_CHECK;
2294 2741
2295 wlist_del (&anfds[w->fd].head, (WL)w); 2742 wlist_del (&anfds[w->fd].head, (WL)w);
2296 ev_stop (EV_A_ (W)w); 2743 ev_stop (EV_A_ (W)w);
2297 2744
2298 fd_change (EV_A_ w->fd, 1); 2745 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2299 2746
2300 EV_FREQUENT_CHECK; 2747 EV_FREQUENT_CHECK;
2301} 2748}
2302 2749
2303void noinline 2750void noinline
… …
2345 timers [active] = timers [timercnt + HEAP0]; 2792 timers [active] = timers [timercnt + HEAP0];
2346 adjustheap (timers, timercnt, active); 2793 adjustheap (timers, timercnt, active);
2347 } 2794 }
2348 } 2795 }
2349 2796
2350 EV_FREQUENT_CHECK;
2351
2352 ev_at (w) -= mn_now; 2797 ev_at (w) -= mn_now;
2353 2798
2354 ev_stop (EV_A_ (W)w); 2799 ev_stop (EV_A_ (W)w);
2800
2801 EV_FREQUENT_CHECK;
2355} 2802}
2356 2803
2357void noinline 2804void noinline
2358ev_timer_again (EV_P_ ev_timer *w) 2805ev_timer_again (EV_P_ ev_timer *w)
2359{ 2806{
… …
2377 } 2824 }
2378 2825
2379 EV_FREQUENT_CHECK; 2826 EV_FREQUENT_CHECK;
2380} 2827}
2381 2828
2829ev_tstamp
2830ev_timer_remaining (EV_P_ ev_timer *w)
2831{
2832 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2833}
2834
2382#if EV_PERIODIC_ENABLE 2835#if EV_PERIODIC_ENABLE
2383void noinline 2836void noinline
2384ev_periodic_start (EV_P_ ev_periodic *w) 2837ev_periodic_start (EV_P_ ev_periodic *w)
2385{ 2838{
2386 if (expect_false (ev_is_active (w))) 2839 if (expect_false (ev_is_active (w)))
… …
2389 if (w->reschedule_cb) 2842 if (w->reschedule_cb)
2390 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2843 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2391 else if (w->interval) 2844 else if (w->interval)
2392 { 2845 {
2393 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2846 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2394 /* this formula differs from the one in periodic_reify because we do not always round up */ 2847 periodic_recalc (EV_A_ w);
2395 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2396 } 2848 }
2397 else 2849 else
2398 ev_at (w) = w->offset; 2850 ev_at (w) = w->offset;
2399 2851
2400 EV_FREQUENT_CHECK; 2852 EV_FREQUENT_CHECK;
… …
2432 periodics [active] = periodics [periodiccnt + HEAP0]; 2884 periodics [active] = periodics [periodiccnt + HEAP0];
2433 adjustheap (periodics, periodiccnt, active); 2885 adjustheap (periodics, periodiccnt, active);
2434 } 2886 }
2435 } 2887 }
2436 2888
2437 EV_FREQUENT_CHECK;
2438
2439 ev_stop (EV_A_ (W)w); 2889 ev_stop (EV_A_ (W)w);
2890
2891 EV_FREQUENT_CHECK;
2440} 2892}
2441 2893
2442void noinline 2894void noinline
2443ev_periodic_again (EV_P_ ev_periodic *w) 2895ev_periodic_again (EV_P_ ev_periodic *w)
2444{ 2896{
… …
2450 2902
2451#ifndef SA_RESTART 2903#ifndef SA_RESTART
2452# define SA_RESTART 0 2904# define SA_RESTART 0
2453#endif 2905#endif
2454 2906
2907#if EV_SIGNAL_ENABLE
2908
2455void noinline 2909void noinline
2456ev_signal_start (EV_P_ ev_signal *w) 2910ev_signal_start (EV_P_ ev_signal *w)
2457{ 2911{
2458#if EV_MULTIPLICITY
2459 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2460#endif
2461 if (expect_false (ev_is_active (w))) 2912 if (expect_false (ev_is_active (w)))
2462 return; 2913 return;
2463 2914
2464 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 2915 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2465 2916
2466 evpipe_init (EV_A); 2917#if EV_MULTIPLICITY
2918 assert (("libev: a signal must not be attached to two different loops",
2919 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2467 2920
2468 EV_FREQUENT_CHECK; 2921 signals [w->signum - 1].loop = EV_A;
2922#endif
2469 2923
2924 EV_FREQUENT_CHECK;
2925
2926#if EV_USE_SIGNALFD
2927 if (sigfd == -2)
2470 { 2928 {
2471#ifndef _WIN32 2929 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2472 sigset_t full, prev; 2930 if (sigfd < 0 && errno == EINVAL)
2473 sigfillset (&full); 2931 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2474 sigprocmask (SIG_SETMASK, &full, &prev);
2475#endif
2476 2932
2477 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 2933 if (sigfd >= 0)
2934 {
2935 fd_intern (sigfd); /* doing it twice will not hurt */
2478 2936
2479#ifndef _WIN32 2937 sigemptyset (&sigfd_set);
2480 sigprocmask (SIG_SETMASK, &prev, 0); 2938
2481#endif 2939 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2940 ev_set_priority (&sigfd_w, EV_MAXPRI);
2941 ev_io_start (EV_A_ &sigfd_w);
2942 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2943 }
2482 } 2944 }
2945
2946 if (sigfd >= 0)
2947 {
2948 /* TODO: check .head */
2949 sigaddset (&sigfd_set, w->signum);
2950 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2951
2952 signalfd (sigfd, &sigfd_set, 0);
2953 }
2954#endif
2483 2955
2484 ev_start (EV_A_ (W)w, 1); 2956 ev_start (EV_A_ (W)w, 1);
2485 wlist_add (&signals [w->signum - 1].head, (WL)w); 2957 wlist_add (&signals [w->signum - 1].head, (WL)w);
2486 2958
2487 if (!((WL)w)->next) 2959 if (!((WL)w)->next)
2960# if EV_USE_SIGNALFD
2961 if (sigfd < 0) /*TODO*/
2962# endif
2488 { 2963 {
2489#if _WIN32 2964# ifdef _WIN32
2965 evpipe_init (EV_A);
2966
2490 signal (w->signum, ev_sighandler); 2967 signal (w->signum, ev_sighandler);
2491#else 2968# else
2492 struct sigaction sa; 2969 struct sigaction sa;
2970
2971 evpipe_init (EV_A);
2972
2493 sa.sa_handler = ev_sighandler; 2973 sa.sa_handler = ev_sighandler;
2494 sigfillset (&sa.sa_mask); 2974 sigfillset (&sa.sa_mask);
2495 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2975 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2496 sigaction (w->signum, &sa, 0); 2976 sigaction (w->signum, &sa, 0);
2977
2978 if (origflags & EVFLAG_NOSIGMASK)
2979 {
2980 sigemptyset (&sa.sa_mask);
2981 sigaddset (&sa.sa_mask, w->signum);
2982 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2983 }
2497#endif 2984#endif
2498 } 2985 }
2499 2986
2500 EV_FREQUENT_CHECK; 2987 EV_FREQUENT_CHECK;
2501} 2988}
2502 2989
2503void noinline 2990void noinline
… …
2511 2998
2512 wlist_del (&signals [w->signum - 1].head, (WL)w); 2999 wlist_del (&signals [w->signum - 1].head, (WL)w);
2513 ev_stop (EV_A_ (W)w); 3000 ev_stop (EV_A_ (W)w);
2514 3001
2515 if (!signals [w->signum - 1].head) 3002 if (!signals [w->signum - 1].head)
3003 {
3004#if EV_MULTIPLICITY
3005 signals [w->signum - 1].loop = 0; /* unattach from signal */
3006#endif
3007#if EV_USE_SIGNALFD
3008 if (sigfd >= 0)
3009 {
3010 sigset_t ss;
3011
3012 sigemptyset (&ss);
3013 sigaddset (&ss, w->signum);
3014 sigdelset (&sigfd_set, w->signum);
3015
3016 signalfd (sigfd, &sigfd_set, 0);
3017 sigprocmask (SIG_UNBLOCK, &ss, 0);
3018 }
3019 else
3020#endif
2516 signal (w->signum, SIG_DFL); 3021 signal (w->signum, SIG_DFL);
3022 }
2517 3023
2518 EV_FREQUENT_CHECK; 3024 EV_FREQUENT_CHECK;
2519} 3025}
3026
3027#endif
3028
3029#if EV_CHILD_ENABLE
2520 3030
2521void 3031void
2522ev_child_start (EV_P_ ev_child *w) 3032ev_child_start (EV_P_ ev_child *w)
2523{ 3033{
2524#if EV_MULTIPLICITY 3034#if EV_MULTIPLICITY
… …
2528 return; 3038 return;
2529 3039
2530 EV_FREQUENT_CHECK; 3040 EV_FREQUENT_CHECK;
2531 3041
2532 ev_start (EV_A_ (W)w, 1); 3042 ev_start (EV_A_ (W)w, 1);
2533 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3043 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2534 3044
2535 EV_FREQUENT_CHECK; 3045 EV_FREQUENT_CHECK;
2536} 3046}
2537 3047
2538void 3048void
… …
2542 if (expect_false (!ev_is_active (w))) 3052 if (expect_false (!ev_is_active (w)))
2543 return; 3053 return;
2544 3054
2545 EV_FREQUENT_CHECK; 3055 EV_FREQUENT_CHECK;
2546 3056
2547 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3057 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2548 ev_stop (EV_A_ (W)w); 3058 ev_stop (EV_A_ (W)w);
2549 3059
2550 EV_FREQUENT_CHECK; 3060 EV_FREQUENT_CHECK;
2551} 3061}
3062
3063#endif
2552 3064
2553#if EV_STAT_ENABLE 3065#if EV_STAT_ENABLE
2554 3066
2555# ifdef _WIN32 3067# ifdef _WIN32
2556# undef lstat 3068# undef lstat
… …
2562#define MIN_STAT_INTERVAL 0.1074891 3074#define MIN_STAT_INTERVAL 0.1074891
2563 3075
2564static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3076static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2565 3077
2566#if EV_USE_INOTIFY 3078#if EV_USE_INOTIFY
2567# define EV_INOTIFY_BUFSIZE 8192 3079
3080/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3081# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2568 3082
2569static void noinline 3083static void noinline
2570infy_add (EV_P_ ev_stat *w) 3084infy_add (EV_P_ ev_stat *w)
2571{ 3085{
2572 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); 3086 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);
2573 3087
2574 if (w->wd < 0) 3088 if (w->wd >= 0)
3089 {
3090 struct statfs sfs;
3091
3092 /* now local changes will be tracked by inotify, but remote changes won't */
3093 /* unless the filesystem is known to be local, we therefore still poll */
3094 /* also do poll on <2.6.25, but with normal frequency */
3095
3096 if (!fs_2625)
3097 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3098 else if (!statfs (w->path, &sfs)
3099 && (sfs.f_type == 0x1373 /* devfs */
3100 || sfs.f_type == 0xEF53 /* ext2/3 */
3101 || sfs.f_type == 0x3153464a /* jfs */
3102 || sfs.f_type == 0x52654973 /* reiser3 */
3103 || sfs.f_type == 0x01021994 /* tempfs */
3104 || sfs.f_type == 0x58465342 /* xfs */))
3105 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3106 else
3107 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2575 { 3108 }
3109 else
3110 {
3111 /* can't use inotify, continue to stat */
2576 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3112 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2577 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2578 3113
2579 /* monitor some parent directory for speedup hints */ 3114 /* if path is not there, monitor some parent directory for speedup hints */
2580 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3115 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2581 /* but an efficiency issue only */ 3116 /* but an efficiency issue only */
2582 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3117 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2583 { 3118 {
2584 char path [4096]; 3119 char path [4096];
… …
2594 if (!pend || pend == path) 3129 if (!pend || pend == path)
2595 break; 3130 break;
2596 3131
2597 *pend = 0; 3132 *pend = 0;
2598 w->wd = inotify_add_watch (fs_fd, path, mask); 3133 w->wd = inotify_add_watch (fs_fd, path, mask);
2599 } 3134 }
2600 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3135 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2601 } 3136 }
2602 } 3137 }
2603 3138
2604 if (w->wd >= 0) 3139 if (w->wd >= 0)
2605 {
2606 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3140 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2607 3141
2608 /* now local changes will be tracked by inotify, but remote changes won't */ 3142 /* now re-arm timer, if required */
2609 /* unless the filesystem it known to be local, we therefore still poll */ 3143 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2610 /* also do poll on <2.6.25, but with normal frequency */
2611 struct statfs sfs;
2612
2613 if (fs_2625 && !statfs (w->path, &sfs))
2614 if (sfs.f_type == 0x1373 /* devfs */
2615 || sfs.f_type == 0xEF53 /* ext2/3 */
2616 || sfs.f_type == 0x3153464a /* jfs */
2617 || sfs.f_type == 0x52654973 /* reiser3 */
2618 || sfs.f_type == 0x01021994 /* tempfs */
2619 || sfs.f_type == 0x58465342 /* xfs */)
2620 return;
2621
2622 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2623 ev_timer_again (EV_A_ &w->timer); 3144 ev_timer_again (EV_A_ &w->timer);
2624 } 3145 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2625} 3146}
2626 3147
2627static void noinline 3148static void noinline
2628infy_del (EV_P_ ev_stat *w) 3149infy_del (EV_P_ ev_stat *w)
2629{ 3150{
… …
2632 3153
2633 if (wd < 0) 3154 if (wd < 0)
2634 return; 3155 return;
2635 3156
2636 w->wd = -2; 3157 w->wd = -2;
2637 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3158 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2638 wlist_del (&fs_hash [slot].head, (WL)w); 3159 wlist_del (&fs_hash [slot].head, (WL)w);
2639 3160
2640 /* remove this watcher, if others are watching it, they will rearm */ 3161 /* remove this watcher, if others are watching it, they will rearm */
2641 inotify_rm_watch (fs_fd, wd); 3162 inotify_rm_watch (fs_fd, wd);
2642} 3163}
… …
2644static void noinline 3165static void noinline
2645infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3166infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2646{ 3167{
2647 if (slot < 0) 3168 if (slot < 0)
2648 /* overflow, need to check for all hash slots */ 3169 /* overflow, need to check for all hash slots */
2649 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3170 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2650 infy_wd (EV_A_ slot, wd, ev); 3171 infy_wd (EV_A_ slot, wd, ev);
2651 else 3172 else
2652 { 3173 {
2653 WL w_; 3174 WL w_;
2654 3175
2655 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3176 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2656 { 3177 {
2657 ev_stat *w = (ev_stat *)w_; 3178 ev_stat *w = (ev_stat *)w_;
2658 w_ = w_->next; /* lets us remove this watcher and all before it */ 3179 w_ = w_->next; /* lets us remove this watcher and all before it */
2659 3180
2660 if (w->wd == wd || wd == -1) 3181 if (w->wd == wd || wd == -1)
2661 { 3182 {
2662 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3183 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2663 { 3184 {
2664 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3185 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2665 w->wd = -1; 3186 w->wd = -1;
2666 infy_add (EV_A_ w); /* re-add, no matter what */ 3187 infy_add (EV_A_ w); /* re-add, no matter what */
2667 } 3188 }
2668 3189
2669 stat_timer_cb (EV_A_ &w->timer, 0); 3190 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2674 3195
2675static void 3196static void
2676infy_cb (EV_P_ ev_io *w, int revents) 3197infy_cb (EV_P_ ev_io *w, int revents)
2677{ 3198{
2678 char buf [EV_INOTIFY_BUFSIZE]; 3199 char buf [EV_INOTIFY_BUFSIZE];
2679 struct inotify_event *ev = (struct inotify_event *)buf;
2680 int ofs; 3200 int ofs;
2681 int len = read (fs_fd, buf, sizeof (buf)); 3201 int len = read (fs_fd, buf, sizeof (buf));
2682 3202
2683 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3203 for (ofs = 0; ofs < len; )
3204 {
3205 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2684 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3206 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3207 ofs += sizeof (struct inotify_event) + ev->len;
3208 }
2685} 3209}
2686 3210
2687inline_size void 3211inline_size void
2688check_2625 (EV_P) 3212ev_check_2625 (EV_P)
2689{ 3213{
2690 /* kernels < 2.6.25 are borked 3214 /* kernels < 2.6.25 are borked
2691 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3215 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2692 */ 3216 */
2693 struct utsname buf; 3217 if (ev_linux_version () < 0x020619)
2694 int major, minor, micro;
2695
2696 if (uname (&buf))
2697 return; 3218 return;
2698 3219
2699 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2700 return;
2701
2702 if (major < 2
2703 || (major == 2 && minor < 6)
2704 || (major == 2 && minor == 6 && micro < 25))
2705 return;
2706
2707 fs_2625 = 1; 3220 fs_2625 = 1;
3221}
3222
3223inline_size int
3224infy_newfd (void)
3225{
3226#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3227 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3228 if (fd >= 0)
3229 return fd;
3230#endif
3231 return inotify_init ();
2708} 3232}
2709 3233
2710inline_size void 3234inline_size void
2711infy_init (EV_P) 3235infy_init (EV_P)
2712{ 3236{
2713 if (fs_fd != -2) 3237 if (fs_fd != -2)
2714 return; 3238 return;
2715 3239
2716 fs_fd = -1; 3240 fs_fd = -1;
2717 3241
2718 check_2625 (EV_A); 3242 ev_check_2625 (EV_A);
2719 3243
2720 fs_fd = inotify_init (); 3244 fs_fd = infy_newfd ();
2721 3245
2722 if (fs_fd >= 0) 3246 if (fs_fd >= 0)
2723 { 3247 {
3248 fd_intern (fs_fd);
2724 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3249 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2725 ev_set_priority (&fs_w, EV_MAXPRI); 3250 ev_set_priority (&fs_w, EV_MAXPRI);
2726 ev_io_start (EV_A_ &fs_w); 3251 ev_io_start (EV_A_ &fs_w);
3252 ev_unref (EV_A);
2727 } 3253 }
2728} 3254}
2729 3255
2730inline_size void 3256inline_size void
2731infy_fork (EV_P) 3257infy_fork (EV_P)
… …
2733 int slot; 3259 int slot;
2734 3260
2735 if (fs_fd < 0) 3261 if (fs_fd < 0)
2736 return; 3262 return;
2737 3263
3264 ev_ref (EV_A);
3265 ev_io_stop (EV_A_ &fs_w);
2738 close (fs_fd); 3266 close (fs_fd);
2739 fs_fd = inotify_init (); 3267 fs_fd = infy_newfd ();
2740 3268
3269 if (fs_fd >= 0)
3270 {
3271 fd_intern (fs_fd);
3272 ev_io_set (&fs_w, fs_fd, EV_READ);
3273 ev_io_start (EV_A_ &fs_w);
3274 ev_unref (EV_A);
3275 }
3276
2741 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3277 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2742 { 3278 {
2743 WL w_ = fs_hash [slot].head; 3279 WL w_ = fs_hash [slot].head;
2744 fs_hash [slot].head = 0; 3280 fs_hash [slot].head = 0;
2745 3281
2746 while (w_) 3282 while (w_)
… …
2751 w->wd = -1; 3287 w->wd = -1;
2752 3288
2753 if (fs_fd >= 0) 3289 if (fs_fd >= 0)
2754 infy_add (EV_A_ w); /* re-add, no matter what */ 3290 infy_add (EV_A_ w); /* re-add, no matter what */
2755 else 3291 else
3292 {
3293 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3294 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2756 ev_timer_again (EV_A_ &w->timer); 3295 ev_timer_again (EV_A_ &w->timer);
3296 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3297 }
2757 } 3298 }
2758 } 3299 }
2759} 3300}
2760 3301
2761#endif 3302#endif
… …
2778static void noinline 3319static void noinline
2779stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3320stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2780{ 3321{
2781 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3322 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2782 3323
2783 /* we copy this here each the time so that */ 3324 ev_statdata prev = w->attr;
2784 /* prev has the old value when the callback gets invoked */
2785 w->prev = w->attr;
2786 ev_stat_stat (EV_A_ w); 3325 ev_stat_stat (EV_A_ w);
2787 3326
2788 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3327 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2789 if ( 3328 if (
2790 w->prev.st_dev != w->attr.st_dev 3329 prev.st_dev != w->attr.st_dev
2791 || w->prev.st_ino != w->attr.st_ino 3330 || prev.st_ino != w->attr.st_ino
2792 || w->prev.st_mode != w->attr.st_mode 3331 || prev.st_mode != w->attr.st_mode
2793 || w->prev.st_nlink != w->attr.st_nlink 3332 || prev.st_nlink != w->attr.st_nlink
2794 || w->prev.st_uid != w->attr.st_uid 3333 || prev.st_uid != w->attr.st_uid
2795 || w->prev.st_gid != w->attr.st_gid 3334 || prev.st_gid != w->attr.st_gid
2796 || w->prev.st_rdev != w->attr.st_rdev 3335 || prev.st_rdev != w->attr.st_rdev
2797 || w->prev.st_size != w->attr.st_size 3336 || prev.st_size != w->attr.st_size
2798 || w->prev.st_atime != w->attr.st_atime 3337 || prev.st_atime != w->attr.st_atime
2799 || w->prev.st_mtime != w->attr.st_mtime 3338 || prev.st_mtime != w->attr.st_mtime
2800 || w->prev.st_ctime != w->attr.st_ctime 3339 || prev.st_ctime != w->attr.st_ctime
2801 ) { 3340 ) {
3341 /* we only update w->prev on actual differences */
3342 /* in case we test more often than invoke the callback, */
3343 /* to ensure that prev is always different to attr */
3344 w->prev = prev;
3345
2802 #if EV_USE_INOTIFY 3346 #if EV_USE_INOTIFY
2803 if (fs_fd >= 0) 3347 if (fs_fd >= 0)
2804 { 3348 {
2805 infy_del (EV_A_ w); 3349 infy_del (EV_A_ w);
2806 infy_add (EV_A_ w); 3350 infy_add (EV_A_ w);
… …
2831 3375
2832 if (fs_fd >= 0) 3376 if (fs_fd >= 0)
2833 infy_add (EV_A_ w); 3377 infy_add (EV_A_ w);
2834 else 3378 else
2835#endif 3379#endif
3380 {
2836 ev_timer_again (EV_A_ &w->timer); 3381 ev_timer_again (EV_A_ &w->timer);
3382 ev_unref (EV_A);
3383 }
2837 3384
2838 ev_start (EV_A_ (W)w, 1); 3385 ev_start (EV_A_ (W)w, 1);
2839 3386
2840 EV_FREQUENT_CHECK; 3387 EV_FREQUENT_CHECK;
2841} 3388}
… …
2850 EV_FREQUENT_CHECK; 3397 EV_FREQUENT_CHECK;
2851 3398
2852#if EV_USE_INOTIFY 3399#if EV_USE_INOTIFY
2853 infy_del (EV_A_ w); 3400 infy_del (EV_A_ w);
2854#endif 3401#endif
3402
3403 if (ev_is_active (&w->timer))
3404 {
3405 ev_ref (EV_A);
2855 ev_timer_stop (EV_A_ &w->timer); 3406 ev_timer_stop (EV_A_ &w->timer);
3407 }
2856 3408
2857 ev_stop (EV_A_ (W)w); 3409 ev_stop (EV_A_ (W)w);
2858 3410
2859 EV_FREQUENT_CHECK; 3411 EV_FREQUENT_CHECK;
2860} 3412}
… …
2905 3457
2906 EV_FREQUENT_CHECK; 3458 EV_FREQUENT_CHECK;
2907} 3459}
2908#endif 3460#endif
2909 3461
3462#if EV_PREPARE_ENABLE
2910void 3463void
2911ev_prepare_start (EV_P_ ev_prepare *w) 3464ev_prepare_start (EV_P_ ev_prepare *w)
2912{ 3465{
2913 if (expect_false (ev_is_active (w))) 3466 if (expect_false (ev_is_active (w)))
2914 return; 3467 return;
… …
2940 3493
2941 ev_stop (EV_A_ (W)w); 3494 ev_stop (EV_A_ (W)w);
2942 3495
2943 EV_FREQUENT_CHECK; 3496 EV_FREQUENT_CHECK;
2944} 3497}
3498#endif
2945 3499
3500#if EV_CHECK_ENABLE
2946void 3501void
2947ev_check_start (EV_P_ ev_check *w) 3502ev_check_start (EV_P_ ev_check *w)
2948{ 3503{
2949 if (expect_false (ev_is_active (w))) 3504 if (expect_false (ev_is_active (w)))
2950 return; 3505 return;
… …
2976 3531
2977 ev_stop (EV_A_ (W)w); 3532 ev_stop (EV_A_ (W)w);
2978 3533
2979 EV_FREQUENT_CHECK; 3534 EV_FREQUENT_CHECK;
2980} 3535}
3536#endif
2981 3537
2982#if EV_EMBED_ENABLE 3538#if EV_EMBED_ENABLE
2983void noinline 3539void noinline
2984ev_embed_sweep (EV_P_ ev_embed *w) 3540ev_embed_sweep (EV_P_ ev_embed *w)
2985{ 3541{
2986 ev_loop (w->other, EVLOOP_NONBLOCK); 3542 ev_run (w->other, EVRUN_NOWAIT);
2987} 3543}
2988 3544
2989static void 3545static void
2990embed_io_cb (EV_P_ ev_io *io, int revents) 3546embed_io_cb (EV_P_ ev_io *io, int revents)
2991{ 3547{
2992 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3548 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2993 3549
2994 if (ev_cb (w)) 3550 if (ev_cb (w))
2995 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3551 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2996 else 3552 else
2997 ev_loop (w->other, EVLOOP_NONBLOCK); 3553 ev_run (w->other, EVRUN_NOWAIT);
2998} 3554}
2999 3555
3000static void 3556static void
3001embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3557embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3002{ 3558{
3003 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3559 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3004 3560
3005 { 3561 {
3006 struct ev_loop *loop = w->other; 3562 EV_P = w->other;
3007 3563
3008 while (fdchangecnt) 3564 while (fdchangecnt)
3009 { 3565 {
3010 fd_reify (EV_A); 3566 fd_reify (EV_A);
3011 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3567 ev_run (EV_A_ EVRUN_NOWAIT);
3012 } 3568 }
3013 } 3569 }
3014} 3570}
3015 3571
3016static void 3572static void
… …
3019 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3575 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3020 3576
3021 ev_embed_stop (EV_A_ w); 3577 ev_embed_stop (EV_A_ w);
3022 3578
3023 { 3579 {
3024 struct ev_loop *loop = w->other; 3580 EV_P = w->other;
3025 3581
3026 ev_loop_fork (EV_A); 3582 ev_loop_fork (EV_A);
3027 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3583 ev_run (EV_A_ EVRUN_NOWAIT);
3028 } 3584 }
3029 3585
3030 ev_embed_start (EV_A_ w); 3586 ev_embed_start (EV_A_ w);
3031} 3587}
3032 3588
… …
3043{ 3599{
3044 if (expect_false (ev_is_active (w))) 3600 if (expect_false (ev_is_active (w)))
3045 return; 3601 return;
3046 3602
3047 { 3603 {
3048 struct ev_loop *loop = w->other; 3604 EV_P = w->other;
3049 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3605 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3050 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3606 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3051 } 3607 }
3052 3608
3053 EV_FREQUENT_CHECK; 3609 EV_FREQUENT_CHECK;
… …
3080 3636
3081 ev_io_stop (EV_A_ &w->io); 3637 ev_io_stop (EV_A_ &w->io);
3082 ev_prepare_stop (EV_A_ &w->prepare); 3638 ev_prepare_stop (EV_A_ &w->prepare);
3083 ev_fork_stop (EV_A_ &w->fork); 3639 ev_fork_stop (EV_A_ &w->fork);
3084 3640
3641 ev_stop (EV_A_ (W)w);
3642
3085 EV_FREQUENT_CHECK; 3643 EV_FREQUENT_CHECK;
3086} 3644}
3087#endif 3645#endif
3088 3646
3089#if EV_FORK_ENABLE 3647#if EV_FORK_ENABLE
… …
3122 3680
3123 EV_FREQUENT_CHECK; 3681 EV_FREQUENT_CHECK;
3124} 3682}
3125#endif 3683#endif
3126 3684
3127#if EV_ASYNC_ENABLE 3685#if EV_CLEANUP_ENABLE
3128void 3686void
3129ev_async_start (EV_P_ ev_async *w) 3687ev_cleanup_start (EV_P_ ev_cleanup *w)
3130{ 3688{
3131 if (expect_false (ev_is_active (w))) 3689 if (expect_false (ev_is_active (w)))
3132 return; 3690 return;
3691
3692 EV_FREQUENT_CHECK;
3693
3694 ev_start (EV_A_ (W)w, ++cleanupcnt);
3695 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3696 cleanups [cleanupcnt - 1] = w;
3697
3698 /* cleanup watchers should never keep a refcount on the loop */
3699 ev_unref (EV_A);
3700 EV_FREQUENT_CHECK;
3701}
3702
3703void
3704ev_cleanup_stop (EV_P_ ev_cleanup *w)
3705{
3706 clear_pending (EV_A_ (W)w);
3707 if (expect_false (!ev_is_active (w)))
3708 return;
3709
3710 EV_FREQUENT_CHECK;
3711 ev_ref (EV_A);
3712
3713 {
3714 int active = ev_active (w);
3715
3716 cleanups [active - 1] = cleanups [--cleanupcnt];
3717 ev_active (cleanups [active - 1]) = active;
3718 }
3719
3720 ev_stop (EV_A_ (W)w);
3721
3722 EV_FREQUENT_CHECK;
3723}
3724#endif
3725
3726#if EV_ASYNC_ENABLE
3727void
3728ev_async_start (EV_P_ ev_async *w)
3729{
3730 if (expect_false (ev_is_active (w)))
3731 return;
3732
3733 w->sent = 0;
3133 3734
3134 evpipe_init (EV_A); 3735 evpipe_init (EV_A);
3135 3736
3136 EV_FREQUENT_CHECK; 3737 EV_FREQUENT_CHECK;
3137 3738
… …
3165 3766
3166void 3767void
3167ev_async_send (EV_P_ ev_async *w) 3768ev_async_send (EV_P_ ev_async *w)
3168{ 3769{
3169 w->sent = 1; 3770 w->sent = 1;
3170 evpipe_write (EV_A_ &gotasync); 3771 evpipe_write (EV_A_ &async_pending);
3171} 3772}
3172#endif 3773#endif
3173 3774
3174/*****************************************************************************/ 3775/*****************************************************************************/
3175 3776
… …
3215{ 3816{
3216 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3817 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3217 3818
3218 if (expect_false (!once)) 3819 if (expect_false (!once))
3219 { 3820 {
3220 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3821 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3221 return; 3822 return;
3222 } 3823 }
3223 3824
3224 once->cb = cb; 3825 once->cb = cb;
3225 once->arg = arg; 3826 once->arg = arg;
… …
3312 if (types & EV_ASYNC) 3913 if (types & EV_ASYNC)
3313 for (i = asynccnt; i--; ) 3914 for (i = asynccnt; i--; )
3314 cb (EV_A_ EV_ASYNC, asyncs [i]); 3915 cb (EV_A_ EV_ASYNC, asyncs [i]);
3315#endif 3916#endif
3316 3917
3918#if EV_PREPARE_ENABLE
3317 if (types & EV_PREPARE) 3919 if (types & EV_PREPARE)
3318 for (i = preparecnt; i--; ) 3920 for (i = preparecnt; i--; )
3319#if EV_EMBED_ENABLE 3921# if EV_EMBED_ENABLE
3320 if (ev_cb (prepares [i]) != embed_prepare_cb) 3922 if (ev_cb (prepares [i]) != embed_prepare_cb)
3321#endif 3923# endif
3322 cb (EV_A_ EV_PREPARE, prepares [i]); 3924 cb (EV_A_ EV_PREPARE, prepares [i]);
3925#endif
3323 3926
3927#if EV_CHECK_ENABLE
3324 if (types & EV_CHECK) 3928 if (types & EV_CHECK)
3325 for (i = checkcnt; i--; ) 3929 for (i = checkcnt; i--; )
3326 cb (EV_A_ EV_CHECK, checks [i]); 3930 cb (EV_A_ EV_CHECK, checks [i]);
3931#endif
3327 3932
3933#if EV_SIGNAL_ENABLE
3328 if (types & EV_SIGNAL) 3934 if (types & EV_SIGNAL)
3329 for (i = 0; i < signalmax; ++i) 3935 for (i = 0; i < EV_NSIG - 1; ++i)
3330 for (wl = signals [i].head; wl; ) 3936 for (wl = signals [i].head; wl; )
3331 { 3937 {
3332 wn = wl->next; 3938 wn = wl->next;
3333 cb (EV_A_ EV_SIGNAL, wl); 3939 cb (EV_A_ EV_SIGNAL, wl);
3334 wl = wn; 3940 wl = wn;
3335 } 3941 }
3942#endif
3336 3943
3944#if EV_CHILD_ENABLE
3337 if (types & EV_CHILD) 3945 if (types & EV_CHILD)
3338 for (i = EV_PID_HASHSIZE; i--; ) 3946 for (i = (EV_PID_HASHSIZE); i--; )
3339 for (wl = childs [i]; wl; ) 3947 for (wl = childs [i]; wl; )
3340 { 3948 {
3341 wn = wl->next; 3949 wn = wl->next;
3342 cb (EV_A_ EV_CHILD, wl); 3950 cb (EV_A_ EV_CHILD, wl);
3343 wl = wn; 3951 wl = wn;
3344 } 3952 }
3953#endif
3345/* EV_STAT 0x00001000 /* stat data changed */ 3954/* EV_STAT 0x00001000 /* stat data changed */
3346/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 3955/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3347} 3956}
3348#endif 3957#endif
3349 3958
3350#if EV_MULTIPLICITY 3959#if EV_MULTIPLICITY
3351 #include "ev_wrap.h" 3960 #include "ev_wrap.h"
3352#endif 3961#endif
3353 3962
3354#ifdef __cplusplus 3963EV_CPP(})
3355}
3356#endif
3357 3964

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