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Comparing libev/ev.c (file contents):
Revision 1.285 by root, Wed Apr 15 19:35:53 2009 UTC vs.
Revision 1.385 by root, Wed Jul 20 01:04:03 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL)
65# define EV_USE_CLOCK_SYSCALL 0
62# endif 66# endif
63 67
64# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
65# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
66# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
… …
75# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
77# endif 81# endif
78# endif 82# endif
79 83
84# if HAVE_NANOSLEEP
80# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
81# if HAVE_NANOSLEEP
82# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
83# else 88# else
89# undef EV_USE_NANOSLEEP
84# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
85# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
86# endif 100# endif
87 101
102# if HAVE_POLL && HAVE_POLL_H
88# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
89# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
90# define EV_USE_SELECT 1
91# else
92# define EV_USE_SELECT 0
93# endif 105# endif
94# endif
95
96# ifndef EV_USE_POLL
97# if HAVE_POLL && HAVE_POLL_H
98# define EV_USE_POLL 1
99# else 106# else
107# undef EV_USE_POLL
100# define EV_USE_POLL 0 108# define EV_USE_POLL 0
101# endif
102# endif 109# endif
103 110
104# ifndef EV_USE_EPOLL
105# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
106# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
107# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
108# define EV_USE_EPOLL 0
109# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
110# endif 118# endif
111 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
112# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
113# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
114# define EV_USE_KQUEUE 1
115# else
116# define EV_USE_KQUEUE 0
117# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
118# endif 127# endif
119 128
120# ifndef EV_USE_PORT
121# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
122# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
123# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
124# define EV_USE_PORT 0
125# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
126# endif 136# endif
127 137
128# ifndef EV_USE_INOTIFY
129# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
130# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
131# else
132# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
133# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
134# endif 145# endif
135 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
136# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
137# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
138# define EV_USE_EVENTFD 1
139# else
140# define EV_USE_EVENTFD 0
141# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
154# endif
155
156# if HAVE_EVENTFD
157# ifndef EV_USE_EVENTFD
158# define EV_USE_EVENTFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
142# endif 163# endif
143 164
144#endif 165#endif
145 166
146#include <math.h>
147#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
148#include <fcntl.h> 169#include <fcntl.h>
149#include <stddef.h> 170#include <stddef.h>
150 171
151#include <stdio.h> 172#include <stdio.h>
152 173
153#include <assert.h> 174#include <assert.h>
154#include <errno.h> 175#include <errno.h>
155#include <sys/types.h> 176#include <sys/types.h>
156#include <time.h> 177#include <time.h>
178#include <limits.h>
157 179
158#include <signal.h> 180#include <signal.h>
159 181
160#ifdef EV_H 182#ifdef EV_H
161# include EV_H 183# include EV_H
162#else 184#else
163# include "ev.h" 185# include "ev.h"
164#endif 186#endif
187
188EV_CPP(extern "C" {)
165 189
166#ifndef _WIN32 190#ifndef _WIN32
167# include <sys/time.h> 191# include <sys/time.h>
168# include <sys/wait.h> 192# include <sys/wait.h>
169# include <unistd.h> 193# include <unistd.h>
… …
172# define WIN32_LEAN_AND_MEAN 196# define WIN32_LEAN_AND_MEAN
173# include <windows.h> 197# include <windows.h>
174# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
176# endif 200# endif
201# undef EV_AVOID_STDIO
177#endif 202#endif
203
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
178 211
179/* this block tries to deduce configuration from header-defined symbols and defaults */ 212/* this block tries to deduce configuration from header-defined symbols and defaults */
213
214/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG)
216/* use what's provided */
217#elif defined (NSIG)
218# define EV_NSIG (NSIG)
219#elif defined(_NSIG)
220# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX)
222# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX)
224# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX)
226# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG)
228# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG)
230# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE)
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig)
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else
236# error "unable to find value for NSIG, please report"
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif
241
242#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0
244#endif
180 245
181#ifndef EV_USE_CLOCK_SYSCALL 246#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 247# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1 248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 249# else
185# define EV_USE_CLOCK_SYSCALL 0 250# define EV_USE_CLOCK_SYSCALL 0
186# endif 251# endif
187#endif 252#endif
188 253
189#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 256# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 257# else
193# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
194# endif 259# endif
195#endif 260#endif
196 261
… …
198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 264#endif
200 265
201#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 267# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 268# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 269# else
205# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
206# endif 271# endif
207#endif 272#endif
208 273
209#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 276#endif
212 277
213#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
214# ifdef _WIN32 279# ifdef _WIN32
215# define EV_USE_POLL 0 280# define EV_USE_POLL 0
216# else 281# else
217# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 283# endif
219#endif 284#endif
220 285
221#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 289# else
225# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
226# endif 291# endif
227#endif 292#endif
228 293
… …
234# define EV_USE_PORT 0 299# define EV_USE_PORT 0
235#endif 300#endif
236 301
237#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 305# else
241# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
242# endif 307# endif
243#endif 308#endif
244 309
245#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
247# define EV_PID_HASHSIZE 1
248# else
249# define EV_PID_HASHSIZE 16
250# endif
251#endif 312#endif
252 313
253#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
255# define EV_INOTIFY_HASHSIZE 1
256# else
257# define EV_INOTIFY_HASHSIZE 16
258# endif
259#endif 316#endif
260 317
261#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 321# else
265# define EV_USE_EVENTFD 0 322# define EV_USE_EVENTFD 0
323# endif
324#endif
325
326#ifndef EV_USE_SIGNALFD
327# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
328# define EV_USE_SIGNALFD EV_FEATURE_OS
329# else
330# define EV_USE_SIGNALFD 0
266# endif 331# endif
267#endif 332#endif
268 333
269#if 0 /* debugging */ 334#if 0 /* debugging */
270# define EV_VERIFY 3 335# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 336# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 337# define EV_HEAP_CACHE_AT 1
273#endif 338#endif
274 339
275#ifndef EV_VERIFY 340#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 342#endif
278 343
279#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 346#endif
282 347
283#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL 349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif
351
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h>
356# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1
360# else
361# undef EV_USE_CLOCK_SYSCALL
362# define EV_USE_CLOCK_SYSCALL 0
363# endif
285#endif 364#endif
286 365
287/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 366/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
288 373
289#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
290# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
291# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
292#endif 377#endif
… …
300# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
301# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
302#endif 387#endif
303 388
304#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
305# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
306# include <sys/select.h> 392# include <sys/select.h>
307# endif 393# endif
308#endif 394#endif
309 395
310#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h> 397# include <sys/statfs.h>
313# include <sys/inotify.h> 398# include <sys/inotify.h>
314/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
315# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
… …
320 405
321#if EV_SELECT_IS_WINSOCKET 406#if EV_SELECT_IS_WINSOCKET
322# include <winsock.h> 407# include <winsock.h>
323#endif 408#endif
324 409
325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
331# define EV_USE_MONOTONIC 1
332#endif
333
334#if EV_USE_EVENTFD 410#if EV_USE_EVENTFD
335/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336# include <stdint.h> 412# include <stdint.h>
337# ifdef __cplusplus 413# ifndef EFD_NONBLOCK
338extern "C" { 414# define EFD_NONBLOCK O_NONBLOCK
339# endif 415# endif
340int eventfd (unsigned int initval, int flags); 416# ifndef EFD_CLOEXEC
341# ifdef __cplusplus 417# ifdef O_CLOEXEC
342} 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
343# endif 422# endif
423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
424#endif
425
426#if EV_USE_SIGNALFD
427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
428# include <stdint.h>
429# ifndef SFD_NONBLOCK
430# define SFD_NONBLOCK O_NONBLOCK
431# endif
432# ifndef SFD_CLOEXEC
433# ifdef O_CLOEXEC
434# define SFD_CLOEXEC O_CLOEXEC
435# else
436# define SFD_CLOEXEC 02000000
437# endif
438# endif
439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
440
441struct signalfd_siginfo
442{
443 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)];
445};
344#endif 446#endif
345 447
346/**/ 448/**/
347 449
348#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 452#else
351# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
352#endif 454#endif
353 455
354/* 456/*
355 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
356 * It is added to ev_rt_now when scheduling periodics
357 * to ensure progress, time-wise, even when rounding
358 * errors are against us.
359 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
360 * Better solutions welcome.
361 */ 459 */
362#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
363 462
364#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
365#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
366/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
367 465
368#if __GNUC__ >= 4 466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
369# define expect(expr,value) __builtin_expect ((expr),(value)) 467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
370# define noinline __attribute__ ((noinline)) 468
469/* the following are taken from libecb */
470/* ecb.h start */
471
472/* many compilers define _GNUC_ to some versions but then only implement
473 * what their idiot authors think are the "more important" extensions,
474 * causing enourmous grief in return for some better fake benchmark numbers.
475 * or so.
476 * we try to detect these and simply assume they are not gcc - if they have
477 * an issue with that they should have done it right in the first place.
478 */
479#ifndef ECB_GCC_VERSION
480 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
481 #define ECB_GCC_VERSION(major,minor) 0
482 #else
483 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
484 #endif
485#endif
486
487#if __cplusplus
488 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__
491#elif ECB_C99
492 #define ecb_inline static inline
371#else 493#else
372# define expect(expr,value) (expr) 494 #define ecb_inline static
373# define noinline
374# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
375# define inline
376# endif 495#endif
496
497#ifndef ECB_MEMORY_FENCE
498 #if ECB_GCC_VERSION(2,5)
499 #if __x86
500 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
501 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
502 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE /* better be safe than sorry */
503 #elif __amd64
504 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
505 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
506 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence")
507 #endif
377#endif 508 #endif
509#endif
378 510
511#ifndef ECB_MEMORY_FENCE
512 #if ECB_GCC_VERSION(4,4)
513 #define ECB_MEMORY_FENCE __sync_synchronize ()
514 #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); })
515 #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); })
516 #elif defined(_WIN32) && defined(MemoryBarrier)
517 #define ECB_MEMORY_FENCE MemoryBarrier ()
518 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
519 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
520 #endif
521#endif
522
523#ifndef ECB_MEMORY_FENCE
524 #include <pthread.h>
525
526 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
527 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
528 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
529 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
530#endif
531
532#if ECB_GCC_VERSION(3,1)
533 #define ecb_attribute(attrlist) __attribute__(attrlist)
534 #define ecb_is_constant(expr) __builtin_constant_p (expr)
535 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
536 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
537#else
538 #define ecb_attribute(attrlist)
539 #define ecb_is_constant(expr) 0
540 #define ecb_expect(expr,value) (expr)
541 #define ecb_prefetch(addr,rw,locality)
542#endif
543
544#define ecb_noinline ecb_attribute ((__noinline__))
545#define ecb_noreturn ecb_attribute ((__noreturn__))
546#define ecb_unused ecb_attribute ((__unused__))
547#define ecb_const ecb_attribute ((__const__))
548#define ecb_pure ecb_attribute ((__pure__))
549
550#if ECB_GCC_VERSION(4,3)
551 #define ecb_artificial ecb_attribute ((__artificial__))
552 #define ecb_hot ecb_attribute ((__hot__))
553 #define ecb_cold ecb_attribute ((__cold__))
554#else
555 #define ecb_artificial
556 #define ecb_hot
557 #define ecb_cold
558#endif
559
560/* put around conditional expressions if you are very sure that the */
561/* expression is mostly true or mostly false. note that these return */
562/* booleans, not the expression. */
379#define expect_false(expr) expect ((expr) != 0, 0) 563#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 564#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
565/* ecb.h end */
566
567#define expect_false(cond) ecb_expect_false (cond)
568#define expect_true(cond) ecb_expect_true (cond)
569#define noinline ecb_noinline
570
381#define inline_size static inline 571#define inline_size ecb_inline
382 572
383#if EV_MINIMAL 573#if EV_FEATURE_CODE
574# define inline_speed ecb_inline
575#else
384# define inline_speed static noinline 576# define inline_speed static noinline
577#endif
578
579#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
580
581#if EV_MINPRI == EV_MAXPRI
582# define ABSPRI(w) (((W)w), 0)
385#else 583#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) 584# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
585#endif
391 586
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 587#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 588#define EMPTY2(a,b) /* used to suppress some warnings */
394 589
395typedef ev_watcher *W; 590typedef ev_watcher *W;
… …
399#define ev_active(w) ((W)(w))->active 594#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 595#define ev_at(w) ((WT)(w))->at
401 596
402#if EV_USE_REALTIME 597#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 598/* 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 */ 599/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 600static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 601#endif
407 602
408#if EV_USE_MONOTONIC 603#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 604static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 605#endif
411 606
607#ifndef EV_FD_TO_WIN32_HANDLE
608# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
609#endif
610#ifndef EV_WIN32_HANDLE_TO_FD
611# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
612#endif
613#ifndef EV_WIN32_CLOSE_FD
614# define EV_WIN32_CLOSE_FD(fd) close (fd)
615#endif
616
412#ifdef _WIN32 617#ifdef _WIN32
413# include "ev_win32.c" 618# include "ev_win32.c"
414#endif 619#endif
415 620
416/*****************************************************************************/ 621/*****************************************************************************/
417 622
623/* define a suitable floor function (only used by periodics atm) */
624
625#if EV_USE_FLOOR
626# include <math.h>
627# define ev_floor(v) floor (v)
628#else
629
630#include <float.h>
631
632/* a floor() replacement function, should be independent of ev_tstamp type */
633static ev_tstamp noinline
634ev_floor (ev_tstamp v)
635{
636 /* the choice of shift factor is not terribly important */
637#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
638 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
639#else
640 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
641#endif
642
643 /* argument too large for an unsigned long? */
644 if (expect_false (v >= shift))
645 {
646 ev_tstamp f;
647
648 if (v == v - 1.)
649 return v; /* very large number */
650
651 f = shift * ev_floor (v * (1. / shift));
652 return f + ev_floor (v - f);
653 }
654
655 /* special treatment for negative args? */
656 if (expect_false (v < 0.))
657 {
658 ev_tstamp f = -ev_floor (-v);
659
660 return f - (f == v ? 0 : 1);
661 }
662
663 /* fits into an unsigned long */
664 return (unsigned long)v;
665}
666
667#endif
668
669/*****************************************************************************/
670
671#ifdef __linux
672# include <sys/utsname.h>
673#endif
674
675static unsigned int noinline ecb_cold
676ev_linux_version (void)
677{
678#ifdef __linux
679 unsigned int v = 0;
680 struct utsname buf;
681 int i;
682 char *p = buf.release;
683
684 if (uname (&buf))
685 return 0;
686
687 for (i = 3+1; --i; )
688 {
689 unsigned int c = 0;
690
691 for (;;)
692 {
693 if (*p >= '0' && *p <= '9')
694 c = c * 10 + *p++ - '0';
695 else
696 {
697 p += *p == '.';
698 break;
699 }
700 }
701
702 v = (v << 8) | c;
703 }
704
705 return v;
706#else
707 return 0;
708#endif
709}
710
711/*****************************************************************************/
712
713#if EV_AVOID_STDIO
714static void noinline ecb_cold
715ev_printerr (const char *msg)
716{
717 write (STDERR_FILENO, msg, strlen (msg));
718}
719#endif
720
418static void (*syserr_cb)(const char *msg); 721static void (*syserr_cb)(const char *msg);
419 722
420void 723void ecb_cold
421ev_set_syserr_cb (void (*cb)(const char *msg)) 724ev_set_syserr_cb (void (*cb)(const char *msg))
422{ 725{
423 syserr_cb = cb; 726 syserr_cb = cb;
424} 727}
425 728
426static void noinline 729static void noinline ecb_cold
427ev_syserr (const char *msg) 730ev_syserr (const char *msg)
428{ 731{
429 if (!msg) 732 if (!msg)
430 msg = "(libev) system error"; 733 msg = "(libev) system error";
431 734
432 if (syserr_cb) 735 if (syserr_cb)
433 syserr_cb (msg); 736 syserr_cb (msg);
434 else 737 else
435 { 738 {
739#if EV_AVOID_STDIO
740 ev_printerr (msg);
741 ev_printerr (": ");
742 ev_printerr (strerror (errno));
743 ev_printerr ("\n");
744#else
436 perror (msg); 745 perror (msg);
746#endif
437 abort (); 747 abort ();
438 } 748 }
439} 749}
440 750
441static void * 751static void *
442ev_realloc_emul (void *ptr, long size) 752ev_realloc_emul (void *ptr, long size)
443{ 753{
754#if __GLIBC__
755 return realloc (ptr, size);
756#else
444 /* some systems, notably openbsd and darwin, fail to properly 757 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 758 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 759 * the single unix specification, so work around them here.
447 */ 760 */
448 761
449 if (size) 762 if (size)
450 return realloc (ptr, size); 763 return realloc (ptr, size);
451 764
452 free (ptr); 765 free (ptr);
453 return 0; 766 return 0;
767#endif
454} 768}
455 769
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 770static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
457 771
458void 772void ecb_cold
459ev_set_allocator (void *(*cb)(void *ptr, long size)) 773ev_set_allocator (void *(*cb)(void *ptr, long size))
460{ 774{
461 alloc = cb; 775 alloc = cb;
462} 776}
463 777
… …
466{ 780{
467 ptr = alloc (ptr, size); 781 ptr = alloc (ptr, size);
468 782
469 if (!ptr && size) 783 if (!ptr && size)
470 { 784 {
785#if EV_AVOID_STDIO
786 ev_printerr ("(libev) memory allocation failed, aborting.\n");
787#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 788 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
789#endif
472 abort (); 790 abort ();
473 } 791 }
474 792
475 return ptr; 793 return ptr;
476} 794}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 796#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 797#define ev_free(ptr) ev_realloc ((ptr), 0)
480 798
481/*****************************************************************************/ 799/*****************************************************************************/
482 800
801/* set in reify when reification needed */
802#define EV_ANFD_REIFY 1
803
804/* file descriptor info structure */
483typedef struct 805typedef struct
484{ 806{
485 WL head; 807 WL head;
486 unsigned char events; 808 unsigned char events; /* the events watched for */
487 unsigned char reify; 809 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
488 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 810 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489 unsigned char unused; 811 unsigned char unused;
490#if EV_USE_EPOLL 812#if EV_USE_EPOLL
491 unsigned int egen; /* generation counter to counter epoll bugs */ 813 unsigned int egen; /* generation counter to counter epoll bugs */
492#endif 814#endif
493#if EV_SELECT_IS_WINSOCKET 815#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
494 SOCKET handle; 816 SOCKET handle;
495#endif 817#endif
818#if EV_USE_IOCP
819 OVERLAPPED or, ow;
820#endif
496} ANFD; 821} ANFD;
497 822
823/* stores the pending event set for a given watcher */
498typedef struct 824typedef struct
499{ 825{
500 W w; 826 W w;
501 int events; 827 int events; /* the pending event set for the given watcher */
502} ANPENDING; 828} ANPENDING;
503 829
504#if EV_USE_INOTIFY 830#if EV_USE_INOTIFY
505/* hash table entry per inotify-id */ 831/* hash table entry per inotify-id */
506typedef struct 832typedef struct
… …
509} ANFS; 835} ANFS;
510#endif 836#endif
511 837
512/* Heap Entry */ 838/* Heap Entry */
513#if EV_HEAP_CACHE_AT 839#if EV_HEAP_CACHE_AT
840 /* a heap element */
514 typedef struct { 841 typedef struct {
515 ev_tstamp at; 842 ev_tstamp at;
516 WT w; 843 WT w;
517 } ANHE; 844 } ANHE;
518 845
519 #define ANHE_w(he) (he).w /* access watcher, read-write */ 846 #define ANHE_w(he) (he).w /* access watcher, read-write */
520 #define ANHE_at(he) (he).at /* access cached at, read-only */ 847 #define ANHE_at(he) (he).at /* access cached at, read-only */
521 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 848 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522#else 849#else
850 /* a heap element */
523 typedef WT ANHE; 851 typedef WT ANHE;
524 852
525 #define ANHE_w(he) (he) 853 #define ANHE_w(he) (he)
526 #define ANHE_at(he) (he)->at 854 #define ANHE_at(he) (he)->at
527 #define ANHE_at_cache(he) 855 #define ANHE_at_cache(he)
… …
551 879
552 static int ev_default_loop_ptr; 880 static int ev_default_loop_ptr;
553 881
554#endif 882#endif
555 883
884#if EV_FEATURE_API
885# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
886# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
887# define EV_INVOKE_PENDING invoke_cb (EV_A)
888#else
889# define EV_RELEASE_CB (void)0
890# define EV_ACQUIRE_CB (void)0
891# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
892#endif
893
894#define EVBREAK_RECURSE 0x80
895
556/*****************************************************************************/ 896/*****************************************************************************/
557 897
898#ifndef EV_HAVE_EV_TIME
558ev_tstamp 899ev_tstamp
559ev_time (void) 900ev_time (void)
560{ 901{
561#if EV_USE_REALTIME 902#if EV_USE_REALTIME
562 if (expect_true (have_realtime)) 903 if (expect_true (have_realtime))
… …
569 910
570 struct timeval tv; 911 struct timeval tv;
571 gettimeofday (&tv, 0); 912 gettimeofday (&tv, 0);
572 return tv.tv_sec + tv.tv_usec * 1e-6; 913 return tv.tv_sec + tv.tv_usec * 1e-6;
573} 914}
915#endif
574 916
575inline_size ev_tstamp 917inline_size ev_tstamp
576get_clock (void) 918get_clock (void)
577{ 919{
578#if EV_USE_MONOTONIC 920#if EV_USE_MONOTONIC
… …
601 if (delay > 0.) 943 if (delay > 0.)
602 { 944 {
603#if EV_USE_NANOSLEEP 945#if EV_USE_NANOSLEEP
604 struct timespec ts; 946 struct timespec ts;
605 947
606 ts.tv_sec = (time_t)delay; 948 EV_TS_SET (ts, delay);
607 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
608
609 nanosleep (&ts, 0); 949 nanosleep (&ts, 0);
610#elif defined(_WIN32) 950#elif defined(_WIN32)
611 Sleep ((unsigned long)(delay * 1e3)); 951 Sleep ((unsigned long)(delay * 1e3));
612#else 952#else
613 struct timeval tv; 953 struct timeval tv;
614 954
615 tv.tv_sec = (time_t)delay;
616 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
617
618 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 955 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 956 /* something not guaranteed by newer posix versions, but guaranteed */
620 /* by older ones */ 957 /* by older ones */
958 EV_TV_SET (tv, delay);
621 select (0, 0, 0, 0, &tv); 959 select (0, 0, 0, 0, &tv);
622#endif 960#endif
623 } 961 }
624} 962}
625 963
626/*****************************************************************************/ 964/*****************************************************************************/
627 965
628#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 966#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629 967
968/* find a suitable new size for the given array, */
969/* hopefully by rounding to a nice-to-malloc size */
630inline_size int 970inline_size int
631array_nextsize (int elem, int cur, int cnt) 971array_nextsize (int elem, int cur, int cnt)
632{ 972{
633 int ncur = cur + 1; 973 int ncur = cur + 1;
634 974
… …
646 } 986 }
647 987
648 return ncur; 988 return ncur;
649} 989}
650 990
651static noinline void * 991static void * noinline ecb_cold
652array_realloc (int elem, void *base, int *cur, int cnt) 992array_realloc (int elem, void *base, int *cur, int cnt)
653{ 993{
654 *cur = array_nextsize (elem, *cur, cnt); 994 *cur = array_nextsize (elem, *cur, cnt);
655 return ev_realloc (base, elem * *cur); 995 return ev_realloc (base, elem * *cur);
656} 996}
… …
659 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 999 memset ((void *)(base), 0, sizeof (*(base)) * (count))
660 1000
661#define array_needsize(type,base,cur,cnt,init) \ 1001#define array_needsize(type,base,cur,cnt,init) \
662 if (expect_false ((cnt) > (cur))) \ 1002 if (expect_false ((cnt) > (cur))) \
663 { \ 1003 { \
664 int ocur_ = (cur); \ 1004 int ecb_unused ocur_ = (cur); \
665 (base) = (type *)array_realloc \ 1005 (base) = (type *)array_realloc \
666 (sizeof (type), (base), &(cur), (cnt)); \ 1006 (sizeof (type), (base), &(cur), (cnt)); \
667 init ((base) + (ocur_), (cur) - ocur_); \ 1007 init ((base) + (ocur_), (cur) - ocur_); \
668 } 1008 }
669 1009
… …
680#define array_free(stem, idx) \ 1020#define array_free(stem, idx) \
681 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1021 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682 1022
683/*****************************************************************************/ 1023/*****************************************************************************/
684 1024
1025/* dummy callback for pending events */
1026static void noinline
1027pendingcb (EV_P_ ev_prepare *w, int revents)
1028{
1029}
1030
685void noinline 1031void noinline
686ev_feed_event (EV_P_ void *w, int revents) 1032ev_feed_event (EV_P_ void *w, int revents)
687{ 1033{
688 W w_ = (W)w; 1034 W w_ = (W)w;
689 int pri = ABSPRI (w_); 1035 int pri = ABSPRI (w_);
… …
724} 1070}
725 1071
726/*****************************************************************************/ 1072/*****************************************************************************/
727 1073
728inline_speed void 1074inline_speed void
729fd_event (EV_P_ int fd, int revents) 1075fd_event_nocheck (EV_P_ int fd, int revents)
730{ 1076{
731 ANFD *anfd = anfds + fd; 1077 ANFD *anfd = anfds + fd;
732 ev_io *w; 1078 ev_io *w;
733 1079
734 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1080 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
738 if (ev) 1084 if (ev)
739 ev_feed_event (EV_A_ (W)w, ev); 1085 ev_feed_event (EV_A_ (W)w, ev);
740 } 1086 }
741} 1087}
742 1088
1089/* do not submit kernel events for fds that have reify set */
1090/* because that means they changed while we were polling for new events */
1091inline_speed void
1092fd_event (EV_P_ int fd, int revents)
1093{
1094 ANFD *anfd = anfds + fd;
1095
1096 if (expect_true (!anfd->reify))
1097 fd_event_nocheck (EV_A_ fd, revents);
1098}
1099
743void 1100void
744ev_feed_fd_event (EV_P_ int fd, int revents) 1101ev_feed_fd_event (EV_P_ int fd, int revents)
745{ 1102{
746 if (fd >= 0 && fd < anfdmax) 1103 if (fd >= 0 && fd < anfdmax)
747 fd_event (EV_A_ fd, revents); 1104 fd_event_nocheck (EV_A_ fd, revents);
748} 1105}
749 1106
1107/* make sure the external fd watch events are in-sync */
1108/* with the kernel/libev internal state */
750inline_size void 1109inline_size void
751fd_reify (EV_P) 1110fd_reify (EV_P)
752{ 1111{
753 int i; 1112 int i;
1113
1114#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1115 for (i = 0; i < fdchangecnt; ++i)
1116 {
1117 int fd = fdchanges [i];
1118 ANFD *anfd = anfds + fd;
1119
1120 if (anfd->reify & EV__IOFDSET && anfd->head)
1121 {
1122 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1123
1124 if (handle != anfd->handle)
1125 {
1126 unsigned long arg;
1127
1128 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1129
1130 /* handle changed, but fd didn't - we need to do it in two steps */
1131 backend_modify (EV_A_ fd, anfd->events, 0);
1132 anfd->events = 0;
1133 anfd->handle = handle;
1134 }
1135 }
1136 }
1137#endif
754 1138
755 for (i = 0; i < fdchangecnt; ++i) 1139 for (i = 0; i < fdchangecnt; ++i)
756 { 1140 {
757 int fd = fdchanges [i]; 1141 int fd = fdchanges [i];
758 ANFD *anfd = anfds + fd; 1142 ANFD *anfd = anfds + fd;
759 ev_io *w; 1143 ev_io *w;
760 1144
761 unsigned char events = 0; 1145 unsigned char o_events = anfd->events;
1146 unsigned char o_reify = anfd->reify;
762 1147
763 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1148 anfd->reify = 0;
764 events |= (unsigned char)w->events;
765 1149
766#if EV_SELECT_IS_WINSOCKET 1150 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
767 if (events)
768 { 1151 {
769 unsigned long arg; 1152 anfd->events = 0;
770 #ifdef EV_FD_TO_WIN32_HANDLE 1153
771 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1154 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
772 #else 1155 anfd->events |= (unsigned char)w->events;
773 anfd->handle = _get_osfhandle (fd); 1156
774 #endif 1157 if (o_events != anfd->events)
775 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1158 o_reify = EV__IOFDSET; /* actually |= */
776 } 1159 }
777#endif
778 1160
779 { 1161 if (o_reify & EV__IOFDSET)
780 unsigned char o_events = anfd->events;
781 unsigned char o_reify = anfd->reify;
782
783 anfd->reify = 0;
784 anfd->events = events;
785
786 if (o_events != events || o_reify & EV__IOFDSET)
787 backend_modify (EV_A_ fd, o_events, events); 1162 backend_modify (EV_A_ fd, o_events, anfd->events);
788 }
789 } 1163 }
790 1164
791 fdchangecnt = 0; 1165 fdchangecnt = 0;
792} 1166}
793 1167
1168/* something about the given fd changed */
794inline_size void 1169inline_size void
795fd_change (EV_P_ int fd, int flags) 1170fd_change (EV_P_ int fd, int flags)
796{ 1171{
797 unsigned char reify = anfds [fd].reify; 1172 unsigned char reify = anfds [fd].reify;
798 anfds [fd].reify |= flags; 1173 anfds [fd].reify |= flags;
… …
803 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1178 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
804 fdchanges [fdchangecnt - 1] = fd; 1179 fdchanges [fdchangecnt - 1] = fd;
805 } 1180 }
806} 1181}
807 1182
1183/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
808inline_speed void 1184inline_speed void ecb_cold
809fd_kill (EV_P_ int fd) 1185fd_kill (EV_P_ int fd)
810{ 1186{
811 ev_io *w; 1187 ev_io *w;
812 1188
813 while ((w = (ev_io *)anfds [fd].head)) 1189 while ((w = (ev_io *)anfds [fd].head))
… …
815 ev_io_stop (EV_A_ w); 1191 ev_io_stop (EV_A_ w);
816 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1192 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
817 } 1193 }
818} 1194}
819 1195
1196/* check whether the given fd is actually valid, for error recovery */
820inline_size int 1197inline_size int ecb_cold
821fd_valid (int fd) 1198fd_valid (int fd)
822{ 1199{
823#ifdef _WIN32 1200#ifdef _WIN32
824 return _get_osfhandle (fd) != -1; 1201 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
825#else 1202#else
826 return fcntl (fd, F_GETFD) != -1; 1203 return fcntl (fd, F_GETFD) != -1;
827#endif 1204#endif
828} 1205}
829 1206
830/* called on EBADF to verify fds */ 1207/* called on EBADF to verify fds */
831static void noinline 1208static void noinline ecb_cold
832fd_ebadf (EV_P) 1209fd_ebadf (EV_P)
833{ 1210{
834 int fd; 1211 int fd;
835 1212
836 for (fd = 0; fd < anfdmax; ++fd) 1213 for (fd = 0; fd < anfdmax; ++fd)
… …
838 if (!fd_valid (fd) && errno == EBADF) 1215 if (!fd_valid (fd) && errno == EBADF)
839 fd_kill (EV_A_ fd); 1216 fd_kill (EV_A_ fd);
840} 1217}
841 1218
842/* called on ENOMEM in select/poll to kill some fds and retry */ 1219/* called on ENOMEM in select/poll to kill some fds and retry */
843static void noinline 1220static void noinline ecb_cold
844fd_enomem (EV_P) 1221fd_enomem (EV_P)
845{ 1222{
846 int fd; 1223 int fd;
847 1224
848 for (fd = anfdmax; fd--; ) 1225 for (fd = anfdmax; fd--; )
849 if (anfds [fd].events) 1226 if (anfds [fd].events)
850 { 1227 {
851 fd_kill (EV_A_ fd); 1228 fd_kill (EV_A_ fd);
852 return; 1229 break;
853 } 1230 }
854} 1231}
855 1232
856/* usually called after fork if backend needs to re-arm all fds from scratch */ 1233/* usually called after fork if backend needs to re-arm all fds from scratch */
857static void noinline 1234static void noinline
… …
862 for (fd = 0; fd < anfdmax; ++fd) 1239 for (fd = 0; fd < anfdmax; ++fd)
863 if (anfds [fd].events) 1240 if (anfds [fd].events)
864 { 1241 {
865 anfds [fd].events = 0; 1242 anfds [fd].events = 0;
866 anfds [fd].emask = 0; 1243 anfds [fd].emask = 0;
867 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1244 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
868 } 1245 }
869} 1246}
870 1247
1248/* used to prepare libev internal fd's */
1249/* this is not fork-safe */
1250inline_speed void
1251fd_intern (int fd)
1252{
1253#ifdef _WIN32
1254 unsigned long arg = 1;
1255 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1256#else
1257 fcntl (fd, F_SETFD, FD_CLOEXEC);
1258 fcntl (fd, F_SETFL, O_NONBLOCK);
1259#endif
1260}
1261
871/*****************************************************************************/ 1262/*****************************************************************************/
872 1263
873/* 1264/*
874 * the heap functions want a real array index. array index 0 uis guaranteed to not 1265 * the heap functions want a real array index. array index 0 is guaranteed to not
875 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1266 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
876 * the branching factor of the d-tree. 1267 * the branching factor of the d-tree.
877 */ 1268 */
878 1269
879/* 1270/*
… …
947 1338
948 for (;;) 1339 for (;;)
949 { 1340 {
950 int c = k << 1; 1341 int c = k << 1;
951 1342
952 if (c > N + HEAP0 - 1) 1343 if (c >= N + HEAP0)
953 break; 1344 break;
954 1345
955 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1346 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
956 ? 1 : 0; 1347 ? 1 : 0;
957 1348
… …
989 1380
990 heap [k] = he; 1381 heap [k] = he;
991 ev_active (ANHE_w (he)) = k; 1382 ev_active (ANHE_w (he)) = k;
992} 1383}
993 1384
1385/* move an element suitably so it is in a correct place */
994inline_size void 1386inline_size void
995adjustheap (ANHE *heap, int N, int k) 1387adjustheap (ANHE *heap, int N, int k)
996{ 1388{
997 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1389 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
998 upheap (heap, k); 1390 upheap (heap, k);
999 else 1391 else
1000 downheap (heap, N, k); 1392 downheap (heap, N, k);
1001} 1393}
1002 1394
… …
1012 upheap (heap, i + HEAP0); 1404 upheap (heap, i + HEAP0);
1013} 1405}
1014 1406
1015/*****************************************************************************/ 1407/*****************************************************************************/
1016 1408
1409/* associate signal watchers to a signal signal */
1017typedef struct 1410typedef struct
1018{ 1411{
1412 EV_ATOMIC_T pending;
1413#if EV_MULTIPLICITY
1414 EV_P;
1415#endif
1019 WL head; 1416 WL head;
1020 EV_ATOMIC_T gotsig;
1021} ANSIG; 1417} ANSIG;
1022 1418
1023static ANSIG *signals; 1419static ANSIG signals [EV_NSIG - 1];
1024static int signalmax;
1025
1026static EV_ATOMIC_T gotsig;
1027 1420
1028/*****************************************************************************/ 1421/*****************************************************************************/
1029 1422
1030inline_speed void 1423#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1031fd_intern (int fd)
1032{
1033#ifdef _WIN32
1034 unsigned long arg = 1;
1035 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1036#else
1037 fcntl (fd, F_SETFD, FD_CLOEXEC);
1038 fcntl (fd, F_SETFL, O_NONBLOCK);
1039#endif
1040}
1041 1424
1042static void noinline 1425static void noinline ecb_cold
1043evpipe_init (EV_P) 1426evpipe_init (EV_P)
1044{ 1427{
1045 if (!ev_is_active (&pipeev)) 1428 if (!ev_is_active (&pipe_w))
1046 { 1429 {
1047#if EV_USE_EVENTFD 1430# if EV_USE_EVENTFD
1431 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1432 if (evfd < 0 && errno == EINVAL)
1048 if ((evfd = eventfd (0, 0)) >= 0) 1433 evfd = eventfd (0, 0);
1434
1435 if (evfd >= 0)
1049 { 1436 {
1050 evpipe [0] = -1; 1437 evpipe [0] = -1;
1051 fd_intern (evfd); 1438 fd_intern (evfd); /* doing it twice doesn't hurt */
1052 ev_io_set (&pipeev, evfd, EV_READ); 1439 ev_io_set (&pipe_w, evfd, EV_READ);
1053 } 1440 }
1054 else 1441 else
1055#endif 1442# endif
1056 { 1443 {
1057 while (pipe (evpipe)) 1444 while (pipe (evpipe))
1058 ev_syserr ("(libev) error creating signal/async pipe"); 1445 ev_syserr ("(libev) error creating signal/async pipe");
1059 1446
1060 fd_intern (evpipe [0]); 1447 fd_intern (evpipe [0]);
1061 fd_intern (evpipe [1]); 1448 fd_intern (evpipe [1]);
1062 ev_io_set (&pipeev, evpipe [0], EV_READ); 1449 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1063 } 1450 }
1064 1451
1065 ev_io_start (EV_A_ &pipeev); 1452 ev_io_start (EV_A_ &pipe_w);
1066 ev_unref (EV_A); /* watcher should not keep loop alive */ 1453 ev_unref (EV_A); /* watcher should not keep loop alive */
1067 } 1454 }
1068} 1455}
1069 1456
1070inline_size void 1457inline_speed void
1071evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1458evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1072{ 1459{
1073 if (!*flag) 1460 if (expect_true (*flag))
1461 /*return*//*D*/;
1462
1463 *flag = 1;
1464
1465 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1466
1467 pipe_write_skipped = 1;
1468
1469 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1470
1471 if (pipe_write_wanted)
1074 { 1472 {
1473 int old_errno;
1474
1475 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1476
1075 int old_errno = errno; /* save errno because write might clobber it */ 1477 old_errno = errno; /* save errno because write will clobber it */
1076
1077 *flag = 1;
1078 1478
1079#if EV_USE_EVENTFD 1479#if EV_USE_EVENTFD
1080 if (evfd >= 0) 1480 if (evfd >= 0)
1081 { 1481 {
1082 uint64_t counter = 1; 1482 uint64_t counter = 1;
1083 write (evfd, &counter, sizeof (uint64_t)); 1483 write (evfd, &counter, sizeof (uint64_t));
1084 } 1484 }
1085 else 1485 else
1086#endif 1486#endif
1487 {
1488 /* win32 people keep sending patches that change this write() to send() */
1489 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1490 /* so when you think this write should be a send instead, please find out */
1491 /* where your send() is from - it's definitely not the microsoft send, and */
1492 /* tell me. thank you. */
1087 write (evpipe [1], &old_errno, 1); 1493 write (evpipe [1], &(evpipe [1]), 1);
1494 }
1088 1495
1089 errno = old_errno; 1496 errno = old_errno;
1090 } 1497 }
1091} 1498}
1092 1499
1500/* called whenever the libev signal pipe */
1501/* got some events (signal, async) */
1093static void 1502static void
1094pipecb (EV_P_ ev_io *iow, int revents) 1503pipecb (EV_P_ ev_io *iow, int revents)
1095{ 1504{
1505 int i;
1506
1507 if (revents & EV_READ)
1508 {
1096#if EV_USE_EVENTFD 1509#if EV_USE_EVENTFD
1097 if (evfd >= 0) 1510 if (evfd >= 0)
1098 { 1511 {
1099 uint64_t counter; 1512 uint64_t counter;
1100 read (evfd, &counter, sizeof (uint64_t)); 1513 read (evfd, &counter, sizeof (uint64_t));
1101 } 1514 }
1102 else 1515 else
1103#endif 1516#endif
1104 { 1517 {
1105 char dummy; 1518 char dummy;
1519 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1106 read (evpipe [0], &dummy, 1); 1520 read (evpipe [0], &dummy, 1);
1521 }
1522 }
1523
1524 pipe_write_skipped = 0;
1525
1526#if EV_SIGNAL_ENABLE
1527 if (sig_pending)
1107 } 1528 {
1529 sig_pending = 0;
1108 1530
1109 if (gotsig && ev_is_default_loop (EV_A)) 1531 for (i = EV_NSIG - 1; i--; )
1110 { 1532 if (expect_false (signals [i].pending))
1111 int signum;
1112 gotsig = 0;
1113
1114 for (signum = signalmax; signum--; )
1115 if (signals [signum].gotsig)
1116 ev_feed_signal_event (EV_A_ signum + 1); 1533 ev_feed_signal_event (EV_A_ i + 1);
1117 } 1534 }
1535#endif
1118 1536
1119#if EV_ASYNC_ENABLE 1537#if EV_ASYNC_ENABLE
1120 if (gotasync) 1538 if (async_pending)
1121 { 1539 {
1122 int i; 1540 async_pending = 0;
1123 gotasync = 0;
1124 1541
1125 for (i = asynccnt; i--; ) 1542 for (i = asynccnt; i--; )
1126 if (asyncs [i]->sent) 1543 if (asyncs [i]->sent)
1127 { 1544 {
1128 asyncs [i]->sent = 0; 1545 asyncs [i]->sent = 0;
… …
1132#endif 1549#endif
1133} 1550}
1134 1551
1135/*****************************************************************************/ 1552/*****************************************************************************/
1136 1553
1554void
1555ev_feed_signal (int signum)
1556{
1557#if EV_MULTIPLICITY
1558 EV_P = signals [signum - 1].loop;
1559
1560 if (!EV_A)
1561 return;
1562#endif
1563
1564 if (!ev_active (&pipe_w))
1565 return;
1566
1567 signals [signum - 1].pending = 1;
1568 evpipe_write (EV_A_ &sig_pending);
1569}
1570
1137static void 1571static void
1138ev_sighandler (int signum) 1572ev_sighandler (int signum)
1139{ 1573{
1140#if EV_MULTIPLICITY
1141 struct ev_loop *loop = &default_loop_struct;
1142#endif
1143
1144#if _WIN32 1574#ifdef _WIN32
1145 signal (signum, ev_sighandler); 1575 signal (signum, ev_sighandler);
1146#endif 1576#endif
1147 1577
1148 signals [signum - 1].gotsig = 1; 1578 ev_feed_signal (signum);
1149 evpipe_write (EV_A_ &gotsig);
1150} 1579}
1151 1580
1152void noinline 1581void noinline
1153ev_feed_signal_event (EV_P_ int signum) 1582ev_feed_signal_event (EV_P_ int signum)
1154{ 1583{
1155 WL w; 1584 WL w;
1156 1585
1586 if (expect_false (signum <= 0 || signum > EV_NSIG))
1587 return;
1588
1589 --signum;
1590
1157#if EV_MULTIPLICITY 1591#if EV_MULTIPLICITY
1158 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1592 /* it is permissible to try to feed a signal to the wrong loop */
1159#endif 1593 /* or, likely more useful, feeding a signal nobody is waiting for */
1160 1594
1161 --signum; 1595 if (expect_false (signals [signum].loop != EV_A))
1162
1163 if (signum < 0 || signum >= signalmax)
1164 return; 1596 return;
1597#endif
1165 1598
1166 signals [signum].gotsig = 0; 1599 signals [signum].pending = 0;
1167 1600
1168 for (w = signals [signum].head; w; w = w->next) 1601 for (w = signals [signum].head; w; w = w->next)
1169 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1602 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1170} 1603}
1171 1604
1605#if EV_USE_SIGNALFD
1606static void
1607sigfdcb (EV_P_ ev_io *iow, int revents)
1608{
1609 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1610
1611 for (;;)
1612 {
1613 ssize_t res = read (sigfd, si, sizeof (si));
1614
1615 /* not ISO-C, as res might be -1, but works with SuS */
1616 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1617 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1618
1619 if (res < (ssize_t)sizeof (si))
1620 break;
1621 }
1622}
1623#endif
1624
1625#endif
1626
1172/*****************************************************************************/ 1627/*****************************************************************************/
1173 1628
1629#if EV_CHILD_ENABLE
1174static WL childs [EV_PID_HASHSIZE]; 1630static WL childs [EV_PID_HASHSIZE];
1175
1176#ifndef _WIN32
1177 1631
1178static ev_signal childev; 1632static ev_signal childev;
1179 1633
1180#ifndef WIFCONTINUED 1634#ifndef WIFCONTINUED
1181# define WIFCONTINUED(status) 0 1635# define WIFCONTINUED(status) 0
1182#endif 1636#endif
1183 1637
1638/* handle a single child status event */
1184inline_speed void 1639inline_speed void
1185child_reap (EV_P_ int chain, int pid, int status) 1640child_reap (EV_P_ int chain, int pid, int status)
1186{ 1641{
1187 ev_child *w; 1642 ev_child *w;
1188 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1643 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1189 1644
1190 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1645 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1191 { 1646 {
1192 if ((w->pid == pid || !w->pid) 1647 if ((w->pid == pid || !w->pid)
1193 && (!traced || (w->flags & 1))) 1648 && (!traced || (w->flags & 1)))
1194 { 1649 {
1195 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1650 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1202 1657
1203#ifndef WCONTINUED 1658#ifndef WCONTINUED
1204# define WCONTINUED 0 1659# define WCONTINUED 0
1205#endif 1660#endif
1206 1661
1662/* called on sigchld etc., calls waitpid */
1207static void 1663static void
1208childcb (EV_P_ ev_signal *sw, int revents) 1664childcb (EV_P_ ev_signal *sw, int revents)
1209{ 1665{
1210 int pid, status; 1666 int pid, status;
1211 1667
… …
1219 /* make sure we are called again until all children have been reaped */ 1675 /* make sure we are called again until all children have been reaped */
1220 /* we need to do it this way so that the callback gets called before we continue */ 1676 /* we need to do it this way so that the callback gets called before we continue */
1221 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1677 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1222 1678
1223 child_reap (EV_A_ pid, pid, status); 1679 child_reap (EV_A_ pid, pid, status);
1224 if (EV_PID_HASHSIZE > 1) 1680 if ((EV_PID_HASHSIZE) > 1)
1225 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1681 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1226} 1682}
1227 1683
1228#endif 1684#endif
1229 1685
1230/*****************************************************************************/ 1686/*****************************************************************************/
1231 1687
1688#if EV_USE_IOCP
1689# include "ev_iocp.c"
1690#endif
1232#if EV_USE_PORT 1691#if EV_USE_PORT
1233# include "ev_port.c" 1692# include "ev_port.c"
1234#endif 1693#endif
1235#if EV_USE_KQUEUE 1694#if EV_USE_KQUEUE
1236# include "ev_kqueue.c" 1695# include "ev_kqueue.c"
… …
1243#endif 1702#endif
1244#if EV_USE_SELECT 1703#if EV_USE_SELECT
1245# include "ev_select.c" 1704# include "ev_select.c"
1246#endif 1705#endif
1247 1706
1248int 1707int ecb_cold
1249ev_version_major (void) 1708ev_version_major (void)
1250{ 1709{
1251 return EV_VERSION_MAJOR; 1710 return EV_VERSION_MAJOR;
1252} 1711}
1253 1712
1254int 1713int ecb_cold
1255ev_version_minor (void) 1714ev_version_minor (void)
1256{ 1715{
1257 return EV_VERSION_MINOR; 1716 return EV_VERSION_MINOR;
1258} 1717}
1259 1718
1260/* return true if we are running with elevated privileges and should ignore env variables */ 1719/* return true if we are running with elevated privileges and should ignore env variables */
1261int inline_size 1720int inline_size ecb_cold
1262enable_secure (void) 1721enable_secure (void)
1263{ 1722{
1264#ifdef _WIN32 1723#ifdef _WIN32
1265 return 0; 1724 return 0;
1266#else 1725#else
1267 return getuid () != geteuid () 1726 return getuid () != geteuid ()
1268 || getgid () != getegid (); 1727 || getgid () != getegid ();
1269#endif 1728#endif
1270} 1729}
1271 1730
1272unsigned int 1731unsigned int ecb_cold
1273ev_supported_backends (void) 1732ev_supported_backends (void)
1274{ 1733{
1275 unsigned int flags = 0; 1734 unsigned int flags = 0;
1276 1735
1277 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1736 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1281 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1740 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1282 1741
1283 return flags; 1742 return flags;
1284} 1743}
1285 1744
1286unsigned int 1745unsigned int ecb_cold
1287ev_recommended_backends (void) 1746ev_recommended_backends (void)
1288{ 1747{
1289 unsigned int flags = ev_supported_backends (); 1748 unsigned int flags = ev_supported_backends ();
1290 1749
1291#ifndef __NetBSD__ 1750#ifndef __NetBSD__
… …
1296#ifdef __APPLE__ 1755#ifdef __APPLE__
1297 /* only select works correctly on that "unix-certified" platform */ 1756 /* only select works correctly on that "unix-certified" platform */
1298 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1757 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1299 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1758 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1300#endif 1759#endif
1760#ifdef __FreeBSD__
1761 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1762#endif
1301 1763
1302 return flags; 1764 return flags;
1303} 1765}
1304 1766
1305unsigned int 1767unsigned int ecb_cold
1306ev_embeddable_backends (void) 1768ev_embeddable_backends (void)
1307{ 1769{
1308 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1770 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1309 1771
1310 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1772 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1311 /* please fix it and tell me how to detect the fix */ 1773 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1312 flags &= ~EVBACKEND_EPOLL; 1774 flags &= ~EVBACKEND_EPOLL;
1313 1775
1314 return flags; 1776 return flags;
1315} 1777}
1316 1778
1317unsigned int 1779unsigned int
1318ev_backend (EV_P) 1780ev_backend (EV_P)
1319{ 1781{
1320 return backend; 1782 return backend;
1321} 1783}
1322 1784
1785#if EV_FEATURE_API
1323unsigned int 1786unsigned int
1324ev_loop_count (EV_P) 1787ev_iteration (EV_P)
1325{ 1788{
1326 return loop_count; 1789 return loop_count;
1790}
1791
1792unsigned int
1793ev_depth (EV_P)
1794{
1795 return loop_depth;
1327} 1796}
1328 1797
1329void 1798void
1330ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1799ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1331{ 1800{
… …
1336ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1805ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1337{ 1806{
1338 timeout_blocktime = interval; 1807 timeout_blocktime = interval;
1339} 1808}
1340 1809
1810void
1811ev_set_userdata (EV_P_ void *data)
1812{
1813 userdata = data;
1814}
1815
1816void *
1817ev_userdata (EV_P)
1818{
1819 return userdata;
1820}
1821
1822void
1823ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1824{
1825 invoke_cb = invoke_pending_cb;
1826}
1827
1828void
1829ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1830{
1831 release_cb = release;
1832 acquire_cb = acquire;
1833}
1834#endif
1835
1836/* initialise a loop structure, must be zero-initialised */
1341static void noinline 1837static void noinline ecb_cold
1342loop_init (EV_P_ unsigned int flags) 1838loop_init (EV_P_ unsigned int flags)
1343{ 1839{
1344 if (!backend) 1840 if (!backend)
1345 { 1841 {
1842 origflags = flags;
1843
1346#if EV_USE_REALTIME 1844#if EV_USE_REALTIME
1347 if (!have_realtime) 1845 if (!have_realtime)
1348 { 1846 {
1349 struct timespec ts; 1847 struct timespec ts;
1350 1848
… …
1361 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1859 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1362 have_monotonic = 1; 1860 have_monotonic = 1;
1363 } 1861 }
1364#endif 1862#endif
1365 1863
1366 ev_rt_now = ev_time ();
1367 mn_now = get_clock ();
1368 now_floor = mn_now;
1369 rtmn_diff = ev_rt_now - mn_now;
1370
1371 io_blocktime = 0.;
1372 timeout_blocktime = 0.;
1373 backend = 0;
1374 backend_fd = -1;
1375 gotasync = 0;
1376#if EV_USE_INOTIFY
1377 fs_fd = -2;
1378#endif
1379
1380 /* pid check not overridable via env */ 1864 /* pid check not overridable via env */
1381#ifndef _WIN32 1865#ifndef _WIN32
1382 if (flags & EVFLAG_FORKCHECK) 1866 if (flags & EVFLAG_FORKCHECK)
1383 curpid = getpid (); 1867 curpid = getpid ();
1384#endif 1868#endif
… …
1386 if (!(flags & EVFLAG_NOENV) 1870 if (!(flags & EVFLAG_NOENV)
1387 && !enable_secure () 1871 && !enable_secure ()
1388 && getenv ("LIBEV_FLAGS")) 1872 && getenv ("LIBEV_FLAGS"))
1389 flags = atoi (getenv ("LIBEV_FLAGS")); 1873 flags = atoi (getenv ("LIBEV_FLAGS"));
1390 1874
1391 if (!(flags & 0x0000ffffU)) 1875 ev_rt_now = ev_time ();
1876 mn_now = get_clock ();
1877 now_floor = mn_now;
1878 rtmn_diff = ev_rt_now - mn_now;
1879#if EV_FEATURE_API
1880 invoke_cb = ev_invoke_pending;
1881#endif
1882
1883 io_blocktime = 0.;
1884 timeout_blocktime = 0.;
1885 backend = 0;
1886 backend_fd = -1;
1887 sig_pending = 0;
1888#if EV_ASYNC_ENABLE
1889 async_pending = 0;
1890#endif
1891 pipe_write_skipped = 0;
1892 pipe_write_wanted = 0;
1893#if EV_USE_INOTIFY
1894 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1895#endif
1896#if EV_USE_SIGNALFD
1897 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1898#endif
1899
1900 if (!(flags & EVBACKEND_MASK))
1392 flags |= ev_recommended_backends (); 1901 flags |= ev_recommended_backends ();
1393 1902
1903#if EV_USE_IOCP
1904 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1905#endif
1394#if EV_USE_PORT 1906#if EV_USE_PORT
1395 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1907 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1396#endif 1908#endif
1397#if EV_USE_KQUEUE 1909#if EV_USE_KQUEUE
1398 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1910 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1405#endif 1917#endif
1406#if EV_USE_SELECT 1918#if EV_USE_SELECT
1407 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1919 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1408#endif 1920#endif
1409 1921
1922 ev_prepare_init (&pending_w, pendingcb);
1923
1924#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1410 ev_init (&pipeev, pipecb); 1925 ev_init (&pipe_w, pipecb);
1411 ev_set_priority (&pipeev, EV_MAXPRI); 1926 ev_set_priority (&pipe_w, EV_MAXPRI);
1927#endif
1412 } 1928 }
1413} 1929}
1414 1930
1415static void noinline 1931/* free up a loop structure */
1932void ecb_cold
1416loop_destroy (EV_P) 1933ev_loop_destroy (EV_P)
1417{ 1934{
1418 int i; 1935 int i;
1419 1936
1937#if EV_MULTIPLICITY
1938 /* mimic free (0) */
1939 if (!EV_A)
1940 return;
1941#endif
1942
1943#if EV_CLEANUP_ENABLE
1944 /* queue cleanup watchers (and execute them) */
1945 if (expect_false (cleanupcnt))
1946 {
1947 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1948 EV_INVOKE_PENDING;
1949 }
1950#endif
1951
1952#if EV_CHILD_ENABLE
1953 if (ev_is_active (&childev))
1954 {
1955 ev_ref (EV_A); /* child watcher */
1956 ev_signal_stop (EV_A_ &childev);
1957 }
1958#endif
1959
1420 if (ev_is_active (&pipeev)) 1960 if (ev_is_active (&pipe_w))
1421 { 1961 {
1422 ev_ref (EV_A); /* signal watcher */ 1962 /*ev_ref (EV_A);*/
1423 ev_io_stop (EV_A_ &pipeev); 1963 /*ev_io_stop (EV_A_ &pipe_w);*/
1424 1964
1425#if EV_USE_EVENTFD 1965#if EV_USE_EVENTFD
1426 if (evfd >= 0) 1966 if (evfd >= 0)
1427 close (evfd); 1967 close (evfd);
1428#endif 1968#endif
1429 1969
1430 if (evpipe [0] >= 0) 1970 if (evpipe [0] >= 0)
1431 { 1971 {
1432 close (evpipe [0]); 1972 EV_WIN32_CLOSE_FD (evpipe [0]);
1433 close (evpipe [1]); 1973 EV_WIN32_CLOSE_FD (evpipe [1]);
1434 } 1974 }
1435 } 1975 }
1976
1977#if EV_USE_SIGNALFD
1978 if (ev_is_active (&sigfd_w))
1979 close (sigfd);
1980#endif
1436 1981
1437#if EV_USE_INOTIFY 1982#if EV_USE_INOTIFY
1438 if (fs_fd >= 0) 1983 if (fs_fd >= 0)
1439 close (fs_fd); 1984 close (fs_fd);
1440#endif 1985#endif
1441 1986
1442 if (backend_fd >= 0) 1987 if (backend_fd >= 0)
1443 close (backend_fd); 1988 close (backend_fd);
1444 1989
1990#if EV_USE_IOCP
1991 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1992#endif
1445#if EV_USE_PORT 1993#if EV_USE_PORT
1446 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1994 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1447#endif 1995#endif
1448#if EV_USE_KQUEUE 1996#if EV_USE_KQUEUE
1449 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1997 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1464#if EV_IDLE_ENABLE 2012#if EV_IDLE_ENABLE
1465 array_free (idle, [i]); 2013 array_free (idle, [i]);
1466#endif 2014#endif
1467 } 2015 }
1468 2016
1469 ev_free (anfds); anfdmax = 0; 2017 ev_free (anfds); anfds = 0; anfdmax = 0;
1470 2018
1471 /* have to use the microsoft-never-gets-it-right macro */ 2019 /* have to use the microsoft-never-gets-it-right macro */
1472 array_free (rfeed, EMPTY); 2020 array_free (rfeed, EMPTY);
1473 array_free (fdchange, EMPTY); 2021 array_free (fdchange, EMPTY);
1474 array_free (timer, EMPTY); 2022 array_free (timer, EMPTY);
… …
1476 array_free (periodic, EMPTY); 2024 array_free (periodic, EMPTY);
1477#endif 2025#endif
1478#if EV_FORK_ENABLE 2026#if EV_FORK_ENABLE
1479 array_free (fork, EMPTY); 2027 array_free (fork, EMPTY);
1480#endif 2028#endif
2029#if EV_CLEANUP_ENABLE
2030 array_free (cleanup, EMPTY);
2031#endif
1481 array_free (prepare, EMPTY); 2032 array_free (prepare, EMPTY);
1482 array_free (check, EMPTY); 2033 array_free (check, EMPTY);
1483#if EV_ASYNC_ENABLE 2034#if EV_ASYNC_ENABLE
1484 array_free (async, EMPTY); 2035 array_free (async, EMPTY);
1485#endif 2036#endif
1486 2037
1487 backend = 0; 2038 backend = 0;
2039
2040#if EV_MULTIPLICITY
2041 if (ev_is_default_loop (EV_A))
2042#endif
2043 ev_default_loop_ptr = 0;
2044#if EV_MULTIPLICITY
2045 else
2046 ev_free (EV_A);
2047#endif
1488} 2048}
1489 2049
1490#if EV_USE_INOTIFY 2050#if EV_USE_INOTIFY
1491inline_size void infy_fork (EV_P); 2051inline_size void infy_fork (EV_P);
1492#endif 2052#endif
… …
1505#endif 2065#endif
1506#if EV_USE_INOTIFY 2066#if EV_USE_INOTIFY
1507 infy_fork (EV_A); 2067 infy_fork (EV_A);
1508#endif 2068#endif
1509 2069
1510 if (ev_is_active (&pipeev)) 2070 if (ev_is_active (&pipe_w))
1511 { 2071 {
1512 /* this "locks" the handlers against writing to the pipe */ 2072 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1513 /* while we modify the fd vars */
1514 gotsig = 1;
1515#if EV_ASYNC_ENABLE
1516 gotasync = 1;
1517#endif
1518 2073
1519 ev_ref (EV_A); 2074 ev_ref (EV_A);
1520 ev_io_stop (EV_A_ &pipeev); 2075 ev_io_stop (EV_A_ &pipe_w);
1521 2076
1522#if EV_USE_EVENTFD 2077#if EV_USE_EVENTFD
1523 if (evfd >= 0) 2078 if (evfd >= 0)
1524 close (evfd); 2079 close (evfd);
1525#endif 2080#endif
1526 2081
1527 if (evpipe [0] >= 0) 2082 if (evpipe [0] >= 0)
1528 { 2083 {
1529 close (evpipe [0]); 2084 EV_WIN32_CLOSE_FD (evpipe [0]);
1530 close (evpipe [1]); 2085 EV_WIN32_CLOSE_FD (evpipe [1]);
1531 } 2086 }
1532 2087
2088#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1533 evpipe_init (EV_A); 2089 evpipe_init (EV_A);
1534 /* now iterate over everything, in case we missed something */ 2090 /* now iterate over everything, in case we missed something */
1535 pipecb (EV_A_ &pipeev, EV_READ); 2091 pipecb (EV_A_ &pipe_w, EV_READ);
2092#endif
1536 } 2093 }
1537 2094
1538 postfork = 0; 2095 postfork = 0;
1539} 2096}
1540 2097
1541#if EV_MULTIPLICITY 2098#if EV_MULTIPLICITY
1542 2099
1543struct ev_loop * 2100struct ev_loop * ecb_cold
1544ev_loop_new (unsigned int flags) 2101ev_loop_new (unsigned int flags)
1545{ 2102{
1546 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2103 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1547 2104
1548 memset (loop, 0, sizeof (struct ev_loop)); 2105 memset (EV_A, 0, sizeof (struct ev_loop));
1549
1550 loop_init (EV_A_ flags); 2106 loop_init (EV_A_ flags);
1551 2107
1552 if (ev_backend (EV_A)) 2108 if (ev_backend (EV_A))
1553 return loop; 2109 return EV_A;
1554 2110
2111 ev_free (EV_A);
1555 return 0; 2112 return 0;
1556} 2113}
1557 2114
1558void 2115#endif /* multiplicity */
1559ev_loop_destroy (EV_P)
1560{
1561 loop_destroy (EV_A);
1562 ev_free (loop);
1563}
1564
1565void
1566ev_loop_fork (EV_P)
1567{
1568 postfork = 1; /* must be in line with ev_default_fork */
1569}
1570 2116
1571#if EV_VERIFY 2117#if EV_VERIFY
1572static void noinline 2118static void noinline ecb_cold
1573verify_watcher (EV_P_ W w) 2119verify_watcher (EV_P_ W w)
1574{ 2120{
1575 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2121 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1576 2122
1577 if (w->pending) 2123 if (w->pending)
1578 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2124 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1579} 2125}
1580 2126
1581static void noinline 2127static void noinline ecb_cold
1582verify_heap (EV_P_ ANHE *heap, int N) 2128verify_heap (EV_P_ ANHE *heap, int N)
1583{ 2129{
1584 int i; 2130 int i;
1585 2131
1586 for (i = HEAP0; i < N + HEAP0; ++i) 2132 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1591 2137
1592 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2138 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1593 } 2139 }
1594} 2140}
1595 2141
1596static void noinline 2142static void noinline ecb_cold
1597array_verify (EV_P_ W *ws, int cnt) 2143array_verify (EV_P_ W *ws, int cnt)
1598{ 2144{
1599 while (cnt--) 2145 while (cnt--)
1600 { 2146 {
1601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2147 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1602 verify_watcher (EV_A_ ws [cnt]); 2148 verify_watcher (EV_A_ ws [cnt]);
1603 } 2149 }
1604} 2150}
1605#endif 2151#endif
1606 2152
1607void 2153#if EV_FEATURE_API
2154void ecb_cold
1608ev_loop_verify (EV_P) 2155ev_verify (EV_P)
1609{ 2156{
1610#if EV_VERIFY 2157#if EV_VERIFY
1611 int i; 2158 int i;
1612 WL w; 2159 WL w;
1613 2160
… …
1647#if EV_FORK_ENABLE 2194#if EV_FORK_ENABLE
1648 assert (forkmax >= forkcnt); 2195 assert (forkmax >= forkcnt);
1649 array_verify (EV_A_ (W *)forks, forkcnt); 2196 array_verify (EV_A_ (W *)forks, forkcnt);
1650#endif 2197#endif
1651 2198
2199#if EV_CLEANUP_ENABLE
2200 assert (cleanupmax >= cleanupcnt);
2201 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2202#endif
2203
1652#if EV_ASYNC_ENABLE 2204#if EV_ASYNC_ENABLE
1653 assert (asyncmax >= asynccnt); 2205 assert (asyncmax >= asynccnt);
1654 array_verify (EV_A_ (W *)asyncs, asynccnt); 2206 array_verify (EV_A_ (W *)asyncs, asynccnt);
1655#endif 2207#endif
1656 2208
2209#if EV_PREPARE_ENABLE
1657 assert (preparemax >= preparecnt); 2210 assert (preparemax >= preparecnt);
1658 array_verify (EV_A_ (W *)prepares, preparecnt); 2211 array_verify (EV_A_ (W *)prepares, preparecnt);
2212#endif
1659 2213
2214#if EV_CHECK_ENABLE
1660 assert (checkmax >= checkcnt); 2215 assert (checkmax >= checkcnt);
1661 array_verify (EV_A_ (W *)checks, checkcnt); 2216 array_verify (EV_A_ (W *)checks, checkcnt);
2217#endif
1662 2218
1663# if 0 2219# if 0
2220#if EV_CHILD_ENABLE
1664 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2221 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1665 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2222 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2223#endif
1666# endif 2224# endif
1667#endif 2225#endif
1668} 2226}
1669 2227#endif
1670#endif /* multiplicity */
1671 2228
1672#if EV_MULTIPLICITY 2229#if EV_MULTIPLICITY
1673struct ev_loop * 2230struct ev_loop * ecb_cold
1674ev_default_loop_init (unsigned int flags)
1675#else 2231#else
1676int 2232int
2233#endif
1677ev_default_loop (unsigned int flags) 2234ev_default_loop (unsigned int flags)
1678#endif
1679{ 2235{
1680 if (!ev_default_loop_ptr) 2236 if (!ev_default_loop_ptr)
1681 { 2237 {
1682#if EV_MULTIPLICITY 2238#if EV_MULTIPLICITY
1683 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2239 EV_P = ev_default_loop_ptr = &default_loop_struct;
1684#else 2240#else
1685 ev_default_loop_ptr = 1; 2241 ev_default_loop_ptr = 1;
1686#endif 2242#endif
1687 2243
1688 loop_init (EV_A_ flags); 2244 loop_init (EV_A_ flags);
1689 2245
1690 if (ev_backend (EV_A)) 2246 if (ev_backend (EV_A))
1691 { 2247 {
1692#ifndef _WIN32 2248#if EV_CHILD_ENABLE
1693 ev_signal_init (&childev, childcb, SIGCHLD); 2249 ev_signal_init (&childev, childcb, SIGCHLD);
1694 ev_set_priority (&childev, EV_MAXPRI); 2250 ev_set_priority (&childev, EV_MAXPRI);
1695 ev_signal_start (EV_A_ &childev); 2251 ev_signal_start (EV_A_ &childev);
1696 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2252 ev_unref (EV_A); /* child watcher should not keep loop alive */
1697#endif 2253#endif
… …
1702 2258
1703 return ev_default_loop_ptr; 2259 return ev_default_loop_ptr;
1704} 2260}
1705 2261
1706void 2262void
1707ev_default_destroy (void) 2263ev_loop_fork (EV_P)
1708{ 2264{
1709#if EV_MULTIPLICITY
1710 struct ev_loop *loop = ev_default_loop_ptr;
1711#endif
1712
1713 ev_default_loop_ptr = 0;
1714
1715#ifndef _WIN32
1716 ev_ref (EV_A); /* child watcher */
1717 ev_signal_stop (EV_A_ &childev);
1718#endif
1719
1720 loop_destroy (EV_A);
1721}
1722
1723void
1724ev_default_fork (void)
1725{
1726#if EV_MULTIPLICITY
1727 struct ev_loop *loop = ev_default_loop_ptr;
1728#endif
1729
1730 postfork = 1; /* must be in line with ev_loop_fork */ 2265 postfork = 1; /* must be in line with ev_default_fork */
1731} 2266}
1732 2267
1733/*****************************************************************************/ 2268/*****************************************************************************/
1734 2269
1735void 2270void
1736ev_invoke (EV_P_ void *w, int revents) 2271ev_invoke (EV_P_ void *w, int revents)
1737{ 2272{
1738 EV_CB_INVOKE ((W)w, revents); 2273 EV_CB_INVOKE ((W)w, revents);
1739} 2274}
1740 2275
1741inline_speed void 2276unsigned int
1742call_pending (EV_P) 2277ev_pending_count (EV_P)
2278{
2279 int pri;
2280 unsigned int count = 0;
2281
2282 for (pri = NUMPRI; pri--; )
2283 count += pendingcnt [pri];
2284
2285 return count;
2286}
2287
2288void noinline
2289ev_invoke_pending (EV_P)
1743{ 2290{
1744 int pri; 2291 int pri;
1745 2292
1746 for (pri = NUMPRI; pri--; ) 2293 for (pri = NUMPRI; pri--; )
1747 while (pendingcnt [pri]) 2294 while (pendingcnt [pri])
1748 { 2295 {
1749 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2296 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1750 2297
1751 if (expect_true (p->w))
1752 {
1753 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1754
1755 p->w->pending = 0; 2298 p->w->pending = 0;
1756 EV_CB_INVOKE (p->w, p->events); 2299 EV_CB_INVOKE (p->w, p->events);
1757 EV_FREQUENT_CHECK; 2300 EV_FREQUENT_CHECK;
1758 }
1759 } 2301 }
1760} 2302}
1761 2303
1762#if EV_IDLE_ENABLE 2304#if EV_IDLE_ENABLE
2305/* make idle watchers pending. this handles the "call-idle */
2306/* only when higher priorities are idle" logic */
1763inline_size void 2307inline_size void
1764idle_reify (EV_P) 2308idle_reify (EV_P)
1765{ 2309{
1766 if (expect_false (idleall)) 2310 if (expect_false (idleall))
1767 { 2311 {
… …
1780 } 2324 }
1781 } 2325 }
1782} 2326}
1783#endif 2327#endif
1784 2328
2329/* make timers pending */
1785inline_size void 2330inline_size void
1786timers_reify (EV_P) 2331timers_reify (EV_P)
1787{ 2332{
1788 EV_FREQUENT_CHECK; 2333 EV_FREQUENT_CHECK;
1789 2334
… …
1813 EV_FREQUENT_CHECK; 2358 EV_FREQUENT_CHECK;
1814 feed_reverse (EV_A_ (W)w); 2359 feed_reverse (EV_A_ (W)w);
1815 } 2360 }
1816 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2361 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1817 2362
1818 feed_reverse_done (EV_A_ EV_TIMEOUT); 2363 feed_reverse_done (EV_A_ EV_TIMER);
1819 } 2364 }
1820} 2365}
1821 2366
1822#if EV_PERIODIC_ENABLE 2367#if EV_PERIODIC_ENABLE
2368
2369static void noinline
2370periodic_recalc (EV_P_ ev_periodic *w)
2371{
2372 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2373 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2374
2375 /* the above almost always errs on the low side */
2376 while (at <= ev_rt_now)
2377 {
2378 ev_tstamp nat = at + w->interval;
2379
2380 /* when resolution fails us, we use ev_rt_now */
2381 if (expect_false (nat == at))
2382 {
2383 at = ev_rt_now;
2384 break;
2385 }
2386
2387 at = nat;
2388 }
2389
2390 ev_at (w) = at;
2391}
2392
2393/* make periodics pending */
1823inline_size void 2394inline_size void
1824periodics_reify (EV_P) 2395periodics_reify (EV_P)
1825{ 2396{
1826 EV_FREQUENT_CHECK; 2397 EV_FREQUENT_CHECK;
1827 2398
… …
1845 ANHE_at_cache (periodics [HEAP0]); 2416 ANHE_at_cache (periodics [HEAP0]);
1846 downheap (periodics, periodiccnt, HEAP0); 2417 downheap (periodics, periodiccnt, HEAP0);
1847 } 2418 }
1848 else if (w->interval) 2419 else if (w->interval)
1849 { 2420 {
1850 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2421 periodic_recalc (EV_A_ w);
1851 /* if next trigger time is not sufficiently in the future, put it there */
1852 /* this might happen because of floating point inexactness */
1853 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1854 {
1855 ev_at (w) += w->interval;
1856
1857 /* if interval is unreasonably low we might still have a time in the past */
1858 /* so correct this. this will make the periodic very inexact, but the user */
1859 /* has effectively asked to get triggered more often than possible */
1860 if (ev_at (w) < ev_rt_now)
1861 ev_at (w) = ev_rt_now;
1862 }
1863
1864 ANHE_at_cache (periodics [HEAP0]); 2422 ANHE_at_cache (periodics [HEAP0]);
1865 downheap (periodics, periodiccnt, HEAP0); 2423 downheap (periodics, periodiccnt, HEAP0);
1866 } 2424 }
1867 else 2425 else
1868 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2426 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1874 2432
1875 feed_reverse_done (EV_A_ EV_PERIODIC); 2433 feed_reverse_done (EV_A_ EV_PERIODIC);
1876 } 2434 }
1877} 2435}
1878 2436
2437/* simply recalculate all periodics */
2438/* TODO: maybe ensure that at least one event happens when jumping forward? */
1879static void noinline 2439static void noinline ecb_cold
1880periodics_reschedule (EV_P) 2440periodics_reschedule (EV_P)
1881{ 2441{
1882 int i; 2442 int i;
1883 2443
1884 /* adjust periodics after time jump */ 2444 /* adjust periodics after time jump */
… …
1887 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2447 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1888 2448
1889 if (w->reschedule_cb) 2449 if (w->reschedule_cb)
1890 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2450 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1891 else if (w->interval) 2451 else if (w->interval)
1892 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2452 periodic_recalc (EV_A_ w);
1893 2453
1894 ANHE_at_cache (periodics [i]); 2454 ANHE_at_cache (periodics [i]);
1895 } 2455 }
1896 2456
1897 reheap (periodics, periodiccnt); 2457 reheap (periodics, periodiccnt);
1898} 2458}
1899#endif 2459#endif
1900 2460
2461/* adjust all timers by a given offset */
1901static void noinline 2462static void noinline ecb_cold
1902timers_reschedule (EV_P_ ev_tstamp adjust) 2463timers_reschedule (EV_P_ ev_tstamp adjust)
1903{ 2464{
1904 int i; 2465 int i;
1905 2466
1906 for (i = 0; i < timercnt; ++i) 2467 for (i = 0; i < timercnt; ++i)
… …
1909 ANHE_w (*he)->at += adjust; 2470 ANHE_w (*he)->at += adjust;
1910 ANHE_at_cache (*he); 2471 ANHE_at_cache (*he);
1911 } 2472 }
1912} 2473}
1913 2474
2475/* fetch new monotonic and realtime times from the kernel */
2476/* also detect if there was a timejump, and act accordingly */
1914inline_speed void 2477inline_speed void
1915time_update (EV_P_ ev_tstamp max_block) 2478time_update (EV_P_ ev_tstamp max_block)
1916{ 2479{
1917 int i;
1918
1919#if EV_USE_MONOTONIC 2480#if EV_USE_MONOTONIC
1920 if (expect_true (have_monotonic)) 2481 if (expect_true (have_monotonic))
1921 { 2482 {
2483 int i;
1922 ev_tstamp odiff = rtmn_diff; 2484 ev_tstamp odiff = rtmn_diff;
1923 2485
1924 mn_now = get_clock (); 2486 mn_now = get_clock ();
1925 2487
1926 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2488 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1942 * doesn't hurt either as we only do this on time-jumps or 2504 * doesn't hurt either as we only do this on time-jumps or
1943 * in the unlikely event of having been preempted here. 2505 * in the unlikely event of having been preempted here.
1944 */ 2506 */
1945 for (i = 4; --i; ) 2507 for (i = 4; --i; )
1946 { 2508 {
2509 ev_tstamp diff;
1947 rtmn_diff = ev_rt_now - mn_now; 2510 rtmn_diff = ev_rt_now - mn_now;
1948 2511
2512 diff = odiff - rtmn_diff;
2513
1949 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2514 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1950 return; /* all is well */ 2515 return; /* all is well */
1951 2516
1952 ev_rt_now = ev_time (); 2517 ev_rt_now = ev_time ();
1953 mn_now = get_clock (); 2518 mn_now = get_clock ();
1954 now_floor = mn_now; 2519 now_floor = mn_now;
… …
1976 2541
1977 mn_now = ev_rt_now; 2542 mn_now = ev_rt_now;
1978 } 2543 }
1979} 2544}
1980 2545
1981static int loop_done;
1982
1983void 2546void
1984ev_loop (EV_P_ int flags) 2547ev_run (EV_P_ int flags)
1985{ 2548{
2549#if EV_FEATURE_API
2550 ++loop_depth;
2551#endif
2552
2553 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2554
1986 loop_done = EVUNLOOP_CANCEL; 2555 loop_done = EVBREAK_CANCEL;
1987 2556
1988 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2557 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1989 2558
1990 do 2559 do
1991 { 2560 {
1992#if EV_VERIFY >= 2 2561#if EV_VERIFY >= 2
1993 ev_loop_verify (EV_A); 2562 ev_verify (EV_A);
1994#endif 2563#endif
1995 2564
1996#ifndef _WIN32 2565#ifndef _WIN32
1997 if (expect_false (curpid)) /* penalise the forking check even more */ 2566 if (expect_false (curpid)) /* penalise the forking check even more */
1998 if (expect_false (getpid () != curpid)) 2567 if (expect_false (getpid () != curpid))
… …
2006 /* we might have forked, so queue fork handlers */ 2575 /* we might have forked, so queue fork handlers */
2007 if (expect_false (postfork)) 2576 if (expect_false (postfork))
2008 if (forkcnt) 2577 if (forkcnt)
2009 { 2578 {
2010 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2579 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2011 call_pending (EV_A); 2580 EV_INVOKE_PENDING;
2012 } 2581 }
2013#endif 2582#endif
2014 2583
2584#if EV_PREPARE_ENABLE
2015 /* queue prepare watchers (and execute them) */ 2585 /* queue prepare watchers (and execute them) */
2016 if (expect_false (preparecnt)) 2586 if (expect_false (preparecnt))
2017 { 2587 {
2018 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2588 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2019 call_pending (EV_A); 2589 EV_INVOKE_PENDING;
2020 } 2590 }
2591#endif
2592
2593 if (expect_false (loop_done))
2594 break;
2021 2595
2022 /* we might have forked, so reify kernel state if necessary */ 2596 /* we might have forked, so reify kernel state if necessary */
2023 if (expect_false (postfork)) 2597 if (expect_false (postfork))
2024 loop_fork (EV_A); 2598 loop_fork (EV_A);
2025 2599
… …
2029 /* calculate blocking time */ 2603 /* calculate blocking time */
2030 { 2604 {
2031 ev_tstamp waittime = 0.; 2605 ev_tstamp waittime = 0.;
2032 ev_tstamp sleeptime = 0.; 2606 ev_tstamp sleeptime = 0.;
2033 2607
2608 /* remember old timestamp for io_blocktime calculation */
2609 ev_tstamp prev_mn_now = mn_now;
2610
2611 /* update time to cancel out callback processing overhead */
2612 time_update (EV_A_ 1e100);
2613
2614 /* from now on, we want a pipe-wake-up */
2615 pipe_write_wanted = 1;
2616
2617 ECB_MEMORY_FENCE; /* amke sure pipe_write_wanted is visible before we check for potential skips */
2618
2034 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2619 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2035 { 2620 {
2036 /* update time to cancel out callback processing overhead */ 2621 waittime = MAX_BLOCKTIME;
2037 time_update (EV_A_ 1e100);
2038 2622
2039 if (timercnt) 2623 if (timercnt)
2040 { 2624 {
2041 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2625 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2042 if (waittime > to) waittime = to; 2626 if (waittime > to) waittime = to;
2043 } 2627 }
2044 2628
2045#if EV_PERIODIC_ENABLE 2629#if EV_PERIODIC_ENABLE
2046 if (periodiccnt) 2630 if (periodiccnt)
2047 { 2631 {
2048 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2632 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2049 if (waittime > to) waittime = to; 2633 if (waittime > to) waittime = to;
2050 } 2634 }
2051#endif 2635#endif
2052 2636
2637 /* don't let timeouts decrease the waittime below timeout_blocktime */
2053 if (expect_false (waittime < timeout_blocktime)) 2638 if (expect_false (waittime < timeout_blocktime))
2054 waittime = timeout_blocktime; 2639 waittime = timeout_blocktime;
2055 2640
2056 sleeptime = waittime - backend_fudge; 2641 /* at this point, we NEED to wait, so we have to ensure */
2642 /* to pass a minimum nonzero value to the backend */
2643 if (expect_false (waittime < backend_mintime))
2644 waittime = backend_mintime;
2057 2645
2646 /* extra check because io_blocktime is commonly 0 */
2058 if (expect_true (sleeptime > io_blocktime)) 2647 if (expect_false (io_blocktime))
2059 sleeptime = io_blocktime;
2060
2061 if (sleeptime)
2062 { 2648 {
2649 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2650
2651 if (sleeptime > waittime - backend_mintime)
2652 sleeptime = waittime - backend_mintime;
2653
2654 if (expect_true (sleeptime > 0.))
2655 {
2063 ev_sleep (sleeptime); 2656 ev_sleep (sleeptime);
2064 waittime -= sleeptime; 2657 waittime -= sleeptime;
2658 }
2065 } 2659 }
2066 } 2660 }
2067 2661
2662#if EV_FEATURE_API
2068 ++loop_count; 2663 ++loop_count;
2664#endif
2665 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2069 backend_poll (EV_A_ waittime); 2666 backend_poll (EV_A_ waittime);
2667 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2668
2669 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2670
2671 if (pipe_write_skipped)
2672 {
2673 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2674 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2675 }
2676
2070 2677
2071 /* update ev_rt_now, do magic */ 2678 /* update ev_rt_now, do magic */
2072 time_update (EV_A_ waittime + sleeptime); 2679 time_update (EV_A_ waittime + sleeptime);
2073 } 2680 }
2074 2681
… …
2081#if EV_IDLE_ENABLE 2688#if EV_IDLE_ENABLE
2082 /* queue idle watchers unless other events are pending */ 2689 /* queue idle watchers unless other events are pending */
2083 idle_reify (EV_A); 2690 idle_reify (EV_A);
2084#endif 2691#endif
2085 2692
2693#if EV_CHECK_ENABLE
2086 /* queue check watchers, to be executed first */ 2694 /* queue check watchers, to be executed first */
2087 if (expect_false (checkcnt)) 2695 if (expect_false (checkcnt))
2088 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2696 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2697#endif
2089 2698
2090 call_pending (EV_A); 2699 EV_INVOKE_PENDING;
2091 } 2700 }
2092 while (expect_true ( 2701 while (expect_true (
2093 activecnt 2702 activecnt
2094 && !loop_done 2703 && !loop_done
2095 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2704 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2096 )); 2705 ));
2097 2706
2098 if (loop_done == EVUNLOOP_ONE) 2707 if (loop_done == EVBREAK_ONE)
2099 loop_done = EVUNLOOP_CANCEL; 2708 loop_done = EVBREAK_CANCEL;
2709
2710#if EV_FEATURE_API
2711 --loop_depth;
2712#endif
2100} 2713}
2101 2714
2102void 2715void
2103ev_unloop (EV_P_ int how) 2716ev_break (EV_P_ int how)
2104{ 2717{
2105 loop_done = how; 2718 loop_done = how;
2106} 2719}
2107 2720
2108void 2721void
… …
2133ev_resume (EV_P) 2746ev_resume (EV_P)
2134{ 2747{
2135 ev_tstamp mn_prev = mn_now; 2748 ev_tstamp mn_prev = mn_now;
2136 2749
2137 ev_now_update (EV_A); 2750 ev_now_update (EV_A);
2138 printf ("update %f\n", mn_now - mn_prev);//D
2139 timers_reschedule (EV_A_ mn_now - mn_prev); 2751 timers_reschedule (EV_A_ mn_now - mn_prev);
2752#if EV_PERIODIC_ENABLE
2753 /* TODO: really do this? */
2140 periodics_reschedule (EV_A); 2754 periodics_reschedule (EV_A);
2755#endif
2141} 2756}
2142 2757
2143/*****************************************************************************/ 2758/*****************************************************************************/
2759/* singly-linked list management, used when the expected list length is short */
2144 2760
2145inline_size void 2761inline_size void
2146wlist_add (WL *head, WL elem) 2762wlist_add (WL *head, WL elem)
2147{ 2763{
2148 elem->next = *head; 2764 elem->next = *head;
… …
2152inline_size void 2768inline_size void
2153wlist_del (WL *head, WL elem) 2769wlist_del (WL *head, WL elem)
2154{ 2770{
2155 while (*head) 2771 while (*head)
2156 { 2772 {
2157 if (*head == elem) 2773 if (expect_true (*head == elem))
2158 { 2774 {
2159 *head = elem->next; 2775 *head = elem->next;
2160 return; 2776 break;
2161 } 2777 }
2162 2778
2163 head = &(*head)->next; 2779 head = &(*head)->next;
2164 } 2780 }
2165} 2781}
2166 2782
2783/* internal, faster, version of ev_clear_pending */
2167inline_speed void 2784inline_speed void
2168clear_pending (EV_P_ W w) 2785clear_pending (EV_P_ W w)
2169{ 2786{
2170 if (w->pending) 2787 if (w->pending)
2171 { 2788 {
2172 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2789 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2173 w->pending = 0; 2790 w->pending = 0;
2174 } 2791 }
2175} 2792}
2176 2793
2177int 2794int
… …
2181 int pending = w_->pending; 2798 int pending = w_->pending;
2182 2799
2183 if (expect_true (pending)) 2800 if (expect_true (pending))
2184 { 2801 {
2185 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2802 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2803 p->w = (W)&pending_w;
2186 w_->pending = 0; 2804 w_->pending = 0;
2187 p->w = 0;
2188 return p->events; 2805 return p->events;
2189 } 2806 }
2190 else 2807 else
2191 return 0; 2808 return 0;
2192} 2809}
2193 2810
2194inline_size void 2811inline_size void
2195pri_adjust (EV_P_ W w) 2812pri_adjust (EV_P_ W w)
2196{ 2813{
2197 int pri = w->priority; 2814 int pri = ev_priority (w);
2198 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2815 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2199 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2816 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2200 w->priority = pri; 2817 ev_set_priority (w, pri);
2201} 2818}
2202 2819
2203inline_speed void 2820inline_speed void
2204ev_start (EV_P_ W w, int active) 2821ev_start (EV_P_ W w, int active)
2205{ 2822{
… …
2224 2841
2225 if (expect_false (ev_is_active (w))) 2842 if (expect_false (ev_is_active (w)))
2226 return; 2843 return;
2227 2844
2228 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2845 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2229 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2846 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2230 2847
2231 EV_FREQUENT_CHECK; 2848 EV_FREQUENT_CHECK;
2232 2849
2233 ev_start (EV_A_ (W)w, 1); 2850 ev_start (EV_A_ (W)w, 1);
2234 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2851 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2235 wlist_add (&anfds[fd].head, (WL)w); 2852 wlist_add (&anfds[fd].head, (WL)w);
2236 2853
2237 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 2854 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2238 w->events &= ~EV__IOFDSET; 2855 w->events &= ~EV__IOFDSET;
2239 2856
2240 EV_FREQUENT_CHECK; 2857 EV_FREQUENT_CHECK;
2241} 2858}
2242 2859
… …
2252 EV_FREQUENT_CHECK; 2869 EV_FREQUENT_CHECK;
2253 2870
2254 wlist_del (&anfds[w->fd].head, (WL)w); 2871 wlist_del (&anfds[w->fd].head, (WL)w);
2255 ev_stop (EV_A_ (W)w); 2872 ev_stop (EV_A_ (W)w);
2256 2873
2257 fd_change (EV_A_ w->fd, 1); 2874 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2258 2875
2259 EV_FREQUENT_CHECK; 2876 EV_FREQUENT_CHECK;
2260} 2877}
2261 2878
2262void noinline 2879void noinline
… …
2304 timers [active] = timers [timercnt + HEAP0]; 2921 timers [active] = timers [timercnt + HEAP0];
2305 adjustheap (timers, timercnt, active); 2922 adjustheap (timers, timercnt, active);
2306 } 2923 }
2307 } 2924 }
2308 2925
2309 EV_FREQUENT_CHECK;
2310
2311 ev_at (w) -= mn_now; 2926 ev_at (w) -= mn_now;
2312 2927
2313 ev_stop (EV_A_ (W)w); 2928 ev_stop (EV_A_ (W)w);
2929
2930 EV_FREQUENT_CHECK;
2314} 2931}
2315 2932
2316void noinline 2933void noinline
2317ev_timer_again (EV_P_ ev_timer *w) 2934ev_timer_again (EV_P_ ev_timer *w)
2318{ 2935{
… …
2336 } 2953 }
2337 2954
2338 EV_FREQUENT_CHECK; 2955 EV_FREQUENT_CHECK;
2339} 2956}
2340 2957
2958ev_tstamp
2959ev_timer_remaining (EV_P_ ev_timer *w)
2960{
2961 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2962}
2963
2341#if EV_PERIODIC_ENABLE 2964#if EV_PERIODIC_ENABLE
2342void noinline 2965void noinline
2343ev_periodic_start (EV_P_ ev_periodic *w) 2966ev_periodic_start (EV_P_ ev_periodic *w)
2344{ 2967{
2345 if (expect_false (ev_is_active (w))) 2968 if (expect_false (ev_is_active (w)))
… …
2348 if (w->reschedule_cb) 2971 if (w->reschedule_cb)
2349 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2972 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2350 else if (w->interval) 2973 else if (w->interval)
2351 { 2974 {
2352 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2975 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2353 /* this formula differs from the one in periodic_reify because we do not always round up */ 2976 periodic_recalc (EV_A_ w);
2354 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2355 } 2977 }
2356 else 2978 else
2357 ev_at (w) = w->offset; 2979 ev_at (w) = w->offset;
2358 2980
2359 EV_FREQUENT_CHECK; 2981 EV_FREQUENT_CHECK;
… …
2391 periodics [active] = periodics [periodiccnt + HEAP0]; 3013 periodics [active] = periodics [periodiccnt + HEAP0];
2392 adjustheap (periodics, periodiccnt, active); 3014 adjustheap (periodics, periodiccnt, active);
2393 } 3015 }
2394 } 3016 }
2395 3017
2396 EV_FREQUENT_CHECK;
2397
2398 ev_stop (EV_A_ (W)w); 3018 ev_stop (EV_A_ (W)w);
3019
3020 EV_FREQUENT_CHECK;
2399} 3021}
2400 3022
2401void noinline 3023void noinline
2402ev_periodic_again (EV_P_ ev_periodic *w) 3024ev_periodic_again (EV_P_ ev_periodic *w)
2403{ 3025{
… …
2409 3031
2410#ifndef SA_RESTART 3032#ifndef SA_RESTART
2411# define SA_RESTART 0 3033# define SA_RESTART 0
2412#endif 3034#endif
2413 3035
3036#if EV_SIGNAL_ENABLE
3037
2414void noinline 3038void noinline
2415ev_signal_start (EV_P_ ev_signal *w) 3039ev_signal_start (EV_P_ ev_signal *w)
2416{ 3040{
2417#if EV_MULTIPLICITY
2418 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2419#endif
2420 if (expect_false (ev_is_active (w))) 3041 if (expect_false (ev_is_active (w)))
2421 return; 3042 return;
2422 3043
2423 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3044 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2424 3045
2425 evpipe_init (EV_A); 3046#if EV_MULTIPLICITY
3047 assert (("libev: a signal must not be attached to two different loops",
3048 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2426 3049
2427 EV_FREQUENT_CHECK; 3050 signals [w->signum - 1].loop = EV_A;
3051#endif
2428 3052
3053 EV_FREQUENT_CHECK;
3054
3055#if EV_USE_SIGNALFD
3056 if (sigfd == -2)
2429 { 3057 {
2430#ifndef _WIN32 3058 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2431 sigset_t full, prev; 3059 if (sigfd < 0 && errno == EINVAL)
2432 sigfillset (&full); 3060 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2433 sigprocmask (SIG_SETMASK, &full, &prev);
2434#endif
2435 3061
2436 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3062 if (sigfd >= 0)
3063 {
3064 fd_intern (sigfd); /* doing it twice will not hurt */
2437 3065
2438#ifndef _WIN32 3066 sigemptyset (&sigfd_set);
2439 sigprocmask (SIG_SETMASK, &prev, 0); 3067
2440#endif 3068 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3069 ev_set_priority (&sigfd_w, EV_MAXPRI);
3070 ev_io_start (EV_A_ &sigfd_w);
3071 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3072 }
2441 } 3073 }
3074
3075 if (sigfd >= 0)
3076 {
3077 /* TODO: check .head */
3078 sigaddset (&sigfd_set, w->signum);
3079 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3080
3081 signalfd (sigfd, &sigfd_set, 0);
3082 }
3083#endif
2442 3084
2443 ev_start (EV_A_ (W)w, 1); 3085 ev_start (EV_A_ (W)w, 1);
2444 wlist_add (&signals [w->signum - 1].head, (WL)w); 3086 wlist_add (&signals [w->signum - 1].head, (WL)w);
2445 3087
2446 if (!((WL)w)->next) 3088 if (!((WL)w)->next)
3089# if EV_USE_SIGNALFD
3090 if (sigfd < 0) /*TODO*/
3091# endif
2447 { 3092 {
2448#if _WIN32 3093# ifdef _WIN32
3094 evpipe_init (EV_A);
3095
2449 signal (w->signum, ev_sighandler); 3096 signal (w->signum, ev_sighandler);
2450#else 3097# else
2451 struct sigaction sa; 3098 struct sigaction sa;
3099
3100 evpipe_init (EV_A);
3101
2452 sa.sa_handler = ev_sighandler; 3102 sa.sa_handler = ev_sighandler;
2453 sigfillset (&sa.sa_mask); 3103 sigfillset (&sa.sa_mask);
2454 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3104 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2455 sigaction (w->signum, &sa, 0); 3105 sigaction (w->signum, &sa, 0);
3106
3107 if (origflags & EVFLAG_NOSIGMASK)
3108 {
3109 sigemptyset (&sa.sa_mask);
3110 sigaddset (&sa.sa_mask, w->signum);
3111 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3112 }
2456#endif 3113#endif
2457 } 3114 }
2458 3115
2459 EV_FREQUENT_CHECK; 3116 EV_FREQUENT_CHECK;
2460} 3117}
2461 3118
2462void noinline 3119void noinline
… …
2470 3127
2471 wlist_del (&signals [w->signum - 1].head, (WL)w); 3128 wlist_del (&signals [w->signum - 1].head, (WL)w);
2472 ev_stop (EV_A_ (W)w); 3129 ev_stop (EV_A_ (W)w);
2473 3130
2474 if (!signals [w->signum - 1].head) 3131 if (!signals [w->signum - 1].head)
3132 {
3133#if EV_MULTIPLICITY
3134 signals [w->signum - 1].loop = 0; /* unattach from signal */
3135#endif
3136#if EV_USE_SIGNALFD
3137 if (sigfd >= 0)
3138 {
3139 sigset_t ss;
3140
3141 sigemptyset (&ss);
3142 sigaddset (&ss, w->signum);
3143 sigdelset (&sigfd_set, w->signum);
3144
3145 signalfd (sigfd, &sigfd_set, 0);
3146 sigprocmask (SIG_UNBLOCK, &ss, 0);
3147 }
3148 else
3149#endif
2475 signal (w->signum, SIG_DFL); 3150 signal (w->signum, SIG_DFL);
3151 }
2476 3152
2477 EV_FREQUENT_CHECK; 3153 EV_FREQUENT_CHECK;
2478} 3154}
3155
3156#endif
3157
3158#if EV_CHILD_ENABLE
2479 3159
2480void 3160void
2481ev_child_start (EV_P_ ev_child *w) 3161ev_child_start (EV_P_ ev_child *w)
2482{ 3162{
2483#if EV_MULTIPLICITY 3163#if EV_MULTIPLICITY
… …
2487 return; 3167 return;
2488 3168
2489 EV_FREQUENT_CHECK; 3169 EV_FREQUENT_CHECK;
2490 3170
2491 ev_start (EV_A_ (W)w, 1); 3171 ev_start (EV_A_ (W)w, 1);
2492 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3172 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2493 3173
2494 EV_FREQUENT_CHECK; 3174 EV_FREQUENT_CHECK;
2495} 3175}
2496 3176
2497void 3177void
… …
2501 if (expect_false (!ev_is_active (w))) 3181 if (expect_false (!ev_is_active (w)))
2502 return; 3182 return;
2503 3183
2504 EV_FREQUENT_CHECK; 3184 EV_FREQUENT_CHECK;
2505 3185
2506 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3186 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2507 ev_stop (EV_A_ (W)w); 3187 ev_stop (EV_A_ (W)w);
2508 3188
2509 EV_FREQUENT_CHECK; 3189 EV_FREQUENT_CHECK;
2510} 3190}
3191
3192#endif
2511 3193
2512#if EV_STAT_ENABLE 3194#if EV_STAT_ENABLE
2513 3195
2514# ifdef _WIN32 3196# ifdef _WIN32
2515# undef lstat 3197# undef lstat
… …
2521#define MIN_STAT_INTERVAL 0.1074891 3203#define MIN_STAT_INTERVAL 0.1074891
2522 3204
2523static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3205static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2524 3206
2525#if EV_USE_INOTIFY 3207#if EV_USE_INOTIFY
2526# define EV_INOTIFY_BUFSIZE 8192 3208
3209/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3210# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2527 3211
2528static void noinline 3212static void noinline
2529infy_add (EV_P_ ev_stat *w) 3213infy_add (EV_P_ ev_stat *w)
2530{ 3214{
2531 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); 3215 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);
2532 3216
2533 if (w->wd < 0) 3217 if (w->wd >= 0)
3218 {
3219 struct statfs sfs;
3220
3221 /* now local changes will be tracked by inotify, but remote changes won't */
3222 /* unless the filesystem is known to be local, we therefore still poll */
3223 /* also do poll on <2.6.25, but with normal frequency */
3224
3225 if (!fs_2625)
3226 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3227 else if (!statfs (w->path, &sfs)
3228 && (sfs.f_type == 0x1373 /* devfs */
3229 || sfs.f_type == 0xEF53 /* ext2/3 */
3230 || sfs.f_type == 0x3153464a /* jfs */
3231 || sfs.f_type == 0x52654973 /* reiser3 */
3232 || sfs.f_type == 0x01021994 /* tempfs */
3233 || sfs.f_type == 0x58465342 /* xfs */))
3234 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3235 else
3236 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2534 { 3237 }
3238 else
3239 {
3240 /* can't use inotify, continue to stat */
2535 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3241 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2536 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2537 3242
2538 /* monitor some parent directory for speedup hints */ 3243 /* if path is not there, monitor some parent directory for speedup hints */
2539 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3244 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2540 /* but an efficiency issue only */ 3245 /* but an efficiency issue only */
2541 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3246 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2542 { 3247 {
2543 char path [4096]; 3248 char path [4096];
… …
2553 if (!pend || pend == path) 3258 if (!pend || pend == path)
2554 break; 3259 break;
2555 3260
2556 *pend = 0; 3261 *pend = 0;
2557 w->wd = inotify_add_watch (fs_fd, path, mask); 3262 w->wd = inotify_add_watch (fs_fd, path, mask);
2558 } 3263 }
2559 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3264 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2560 } 3265 }
2561 } 3266 }
2562 3267
2563 if (w->wd >= 0) 3268 if (w->wd >= 0)
2564 {
2565 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3269 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2566 3270
2567 /* now local changes will be tracked by inotify, but remote changes won't */ 3271 /* now re-arm timer, if required */
2568 /* unless the filesystem it known to be local, we therefore still poll */ 3272 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2569 /* also do poll on <2.6.25, but with normal frequency */
2570 struct statfs sfs;
2571
2572 if (fs_2625 && !statfs (w->path, &sfs))
2573 if (sfs.f_type == 0x1373 /* devfs */
2574 || sfs.f_type == 0xEF53 /* ext2/3 */
2575 || sfs.f_type == 0x3153464a /* jfs */
2576 || sfs.f_type == 0x52654973 /* reiser3 */
2577 || sfs.f_type == 0x01021994 /* tempfs */
2578 || sfs.f_type == 0x58465342 /* xfs */)
2579 return;
2580
2581 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2582 ev_timer_again (EV_A_ &w->timer); 3273 ev_timer_again (EV_A_ &w->timer);
2583 } 3274 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2584} 3275}
2585 3276
2586static void noinline 3277static void noinline
2587infy_del (EV_P_ ev_stat *w) 3278infy_del (EV_P_ ev_stat *w)
2588{ 3279{
… …
2591 3282
2592 if (wd < 0) 3283 if (wd < 0)
2593 return; 3284 return;
2594 3285
2595 w->wd = -2; 3286 w->wd = -2;
2596 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3287 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2597 wlist_del (&fs_hash [slot].head, (WL)w); 3288 wlist_del (&fs_hash [slot].head, (WL)w);
2598 3289
2599 /* remove this watcher, if others are watching it, they will rearm */ 3290 /* remove this watcher, if others are watching it, they will rearm */
2600 inotify_rm_watch (fs_fd, wd); 3291 inotify_rm_watch (fs_fd, wd);
2601} 3292}
… …
2603static void noinline 3294static void noinline
2604infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3295infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2605{ 3296{
2606 if (slot < 0) 3297 if (slot < 0)
2607 /* overflow, need to check for all hash slots */ 3298 /* overflow, need to check for all hash slots */
2608 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3299 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2609 infy_wd (EV_A_ slot, wd, ev); 3300 infy_wd (EV_A_ slot, wd, ev);
2610 else 3301 else
2611 { 3302 {
2612 WL w_; 3303 WL w_;
2613 3304
2614 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3305 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2615 { 3306 {
2616 ev_stat *w = (ev_stat *)w_; 3307 ev_stat *w = (ev_stat *)w_;
2617 w_ = w_->next; /* lets us remove this watcher and all before it */ 3308 w_ = w_->next; /* lets us remove this watcher and all before it */
2618 3309
2619 if (w->wd == wd || wd == -1) 3310 if (w->wd == wd || wd == -1)
2620 { 3311 {
2621 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3312 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2622 { 3313 {
2623 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3314 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2624 w->wd = -1; 3315 w->wd = -1;
2625 infy_add (EV_A_ w); /* re-add, no matter what */ 3316 infy_add (EV_A_ w); /* re-add, no matter what */
2626 } 3317 }
2627 3318
2628 stat_timer_cb (EV_A_ &w->timer, 0); 3319 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2633 3324
2634static void 3325static void
2635infy_cb (EV_P_ ev_io *w, int revents) 3326infy_cb (EV_P_ ev_io *w, int revents)
2636{ 3327{
2637 char buf [EV_INOTIFY_BUFSIZE]; 3328 char buf [EV_INOTIFY_BUFSIZE];
2638 struct inotify_event *ev = (struct inotify_event *)buf;
2639 int ofs; 3329 int ofs;
2640 int len = read (fs_fd, buf, sizeof (buf)); 3330 int len = read (fs_fd, buf, sizeof (buf));
2641 3331
2642 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3332 for (ofs = 0; ofs < len; )
3333 {
3334 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2643 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3335 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3336 ofs += sizeof (struct inotify_event) + ev->len;
3337 }
2644} 3338}
2645 3339
2646inline_size void 3340inline_size void ecb_cold
2647check_2625 (EV_P) 3341ev_check_2625 (EV_P)
2648{ 3342{
2649 /* kernels < 2.6.25 are borked 3343 /* kernels < 2.6.25 are borked
2650 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3344 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2651 */ 3345 */
2652 struct utsname buf; 3346 if (ev_linux_version () < 0x020619)
2653 int major, minor, micro;
2654
2655 if (uname (&buf))
2656 return; 3347 return;
2657 3348
2658 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2659 return;
2660
2661 if (major < 2
2662 || (major == 2 && minor < 6)
2663 || (major == 2 && minor == 6 && micro < 25))
2664 return;
2665
2666 fs_2625 = 1; 3349 fs_2625 = 1;
3350}
3351
3352inline_size int
3353infy_newfd (void)
3354{
3355#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3356 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3357 if (fd >= 0)
3358 return fd;
3359#endif
3360 return inotify_init ();
2667} 3361}
2668 3362
2669inline_size void 3363inline_size void
2670infy_init (EV_P) 3364infy_init (EV_P)
2671{ 3365{
2672 if (fs_fd != -2) 3366 if (fs_fd != -2)
2673 return; 3367 return;
2674 3368
2675 fs_fd = -1; 3369 fs_fd = -1;
2676 3370
2677 check_2625 (EV_A); 3371 ev_check_2625 (EV_A);
2678 3372
2679 fs_fd = inotify_init (); 3373 fs_fd = infy_newfd ();
2680 3374
2681 if (fs_fd >= 0) 3375 if (fs_fd >= 0)
2682 { 3376 {
3377 fd_intern (fs_fd);
2683 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3378 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2684 ev_set_priority (&fs_w, EV_MAXPRI); 3379 ev_set_priority (&fs_w, EV_MAXPRI);
2685 ev_io_start (EV_A_ &fs_w); 3380 ev_io_start (EV_A_ &fs_w);
3381 ev_unref (EV_A);
2686 } 3382 }
2687} 3383}
2688 3384
2689inline_size void 3385inline_size void
2690infy_fork (EV_P) 3386infy_fork (EV_P)
… …
2692 int slot; 3388 int slot;
2693 3389
2694 if (fs_fd < 0) 3390 if (fs_fd < 0)
2695 return; 3391 return;
2696 3392
3393 ev_ref (EV_A);
3394 ev_io_stop (EV_A_ &fs_w);
2697 close (fs_fd); 3395 close (fs_fd);
2698 fs_fd = inotify_init (); 3396 fs_fd = infy_newfd ();
2699 3397
3398 if (fs_fd >= 0)
3399 {
3400 fd_intern (fs_fd);
3401 ev_io_set (&fs_w, fs_fd, EV_READ);
3402 ev_io_start (EV_A_ &fs_w);
3403 ev_unref (EV_A);
3404 }
3405
2700 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3406 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2701 { 3407 {
2702 WL w_ = fs_hash [slot].head; 3408 WL w_ = fs_hash [slot].head;
2703 fs_hash [slot].head = 0; 3409 fs_hash [slot].head = 0;
2704 3410
2705 while (w_) 3411 while (w_)
… …
2710 w->wd = -1; 3416 w->wd = -1;
2711 3417
2712 if (fs_fd >= 0) 3418 if (fs_fd >= 0)
2713 infy_add (EV_A_ w); /* re-add, no matter what */ 3419 infy_add (EV_A_ w); /* re-add, no matter what */
2714 else 3420 else
3421 {
3422 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3423 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2715 ev_timer_again (EV_A_ &w->timer); 3424 ev_timer_again (EV_A_ &w->timer);
3425 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3426 }
2716 } 3427 }
2717 } 3428 }
2718} 3429}
2719 3430
2720#endif 3431#endif
… …
2737static void noinline 3448static void noinline
2738stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3449stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2739{ 3450{
2740 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3451 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2741 3452
2742 /* we copy this here each the time so that */ 3453 ev_statdata prev = w->attr;
2743 /* prev has the old value when the callback gets invoked */
2744 w->prev = w->attr;
2745 ev_stat_stat (EV_A_ w); 3454 ev_stat_stat (EV_A_ w);
2746 3455
2747 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3456 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2748 if ( 3457 if (
2749 w->prev.st_dev != w->attr.st_dev 3458 prev.st_dev != w->attr.st_dev
2750 || w->prev.st_ino != w->attr.st_ino 3459 || prev.st_ino != w->attr.st_ino
2751 || w->prev.st_mode != w->attr.st_mode 3460 || prev.st_mode != w->attr.st_mode
2752 || w->prev.st_nlink != w->attr.st_nlink 3461 || prev.st_nlink != w->attr.st_nlink
2753 || w->prev.st_uid != w->attr.st_uid 3462 || prev.st_uid != w->attr.st_uid
2754 || w->prev.st_gid != w->attr.st_gid 3463 || prev.st_gid != w->attr.st_gid
2755 || w->prev.st_rdev != w->attr.st_rdev 3464 || prev.st_rdev != w->attr.st_rdev
2756 || w->prev.st_size != w->attr.st_size 3465 || prev.st_size != w->attr.st_size
2757 || w->prev.st_atime != w->attr.st_atime 3466 || prev.st_atime != w->attr.st_atime
2758 || w->prev.st_mtime != w->attr.st_mtime 3467 || prev.st_mtime != w->attr.st_mtime
2759 || w->prev.st_ctime != w->attr.st_ctime 3468 || prev.st_ctime != w->attr.st_ctime
2760 ) { 3469 ) {
3470 /* we only update w->prev on actual differences */
3471 /* in case we test more often than invoke the callback, */
3472 /* to ensure that prev is always different to attr */
3473 w->prev = prev;
3474
2761 #if EV_USE_INOTIFY 3475 #if EV_USE_INOTIFY
2762 if (fs_fd >= 0) 3476 if (fs_fd >= 0)
2763 { 3477 {
2764 infy_del (EV_A_ w); 3478 infy_del (EV_A_ w);
2765 infy_add (EV_A_ w); 3479 infy_add (EV_A_ w);
… …
2790 3504
2791 if (fs_fd >= 0) 3505 if (fs_fd >= 0)
2792 infy_add (EV_A_ w); 3506 infy_add (EV_A_ w);
2793 else 3507 else
2794#endif 3508#endif
3509 {
2795 ev_timer_again (EV_A_ &w->timer); 3510 ev_timer_again (EV_A_ &w->timer);
3511 ev_unref (EV_A);
3512 }
2796 3513
2797 ev_start (EV_A_ (W)w, 1); 3514 ev_start (EV_A_ (W)w, 1);
2798 3515
2799 EV_FREQUENT_CHECK; 3516 EV_FREQUENT_CHECK;
2800} 3517}
… …
2809 EV_FREQUENT_CHECK; 3526 EV_FREQUENT_CHECK;
2810 3527
2811#if EV_USE_INOTIFY 3528#if EV_USE_INOTIFY
2812 infy_del (EV_A_ w); 3529 infy_del (EV_A_ w);
2813#endif 3530#endif
3531
3532 if (ev_is_active (&w->timer))
3533 {
3534 ev_ref (EV_A);
2814 ev_timer_stop (EV_A_ &w->timer); 3535 ev_timer_stop (EV_A_ &w->timer);
3536 }
2815 3537
2816 ev_stop (EV_A_ (W)w); 3538 ev_stop (EV_A_ (W)w);
2817 3539
2818 EV_FREQUENT_CHECK; 3540 EV_FREQUENT_CHECK;
2819} 3541}
… …
2864 3586
2865 EV_FREQUENT_CHECK; 3587 EV_FREQUENT_CHECK;
2866} 3588}
2867#endif 3589#endif
2868 3590
3591#if EV_PREPARE_ENABLE
2869void 3592void
2870ev_prepare_start (EV_P_ ev_prepare *w) 3593ev_prepare_start (EV_P_ ev_prepare *w)
2871{ 3594{
2872 if (expect_false (ev_is_active (w))) 3595 if (expect_false (ev_is_active (w)))
2873 return; 3596 return;
… …
2899 3622
2900 ev_stop (EV_A_ (W)w); 3623 ev_stop (EV_A_ (W)w);
2901 3624
2902 EV_FREQUENT_CHECK; 3625 EV_FREQUENT_CHECK;
2903} 3626}
3627#endif
2904 3628
3629#if EV_CHECK_ENABLE
2905void 3630void
2906ev_check_start (EV_P_ ev_check *w) 3631ev_check_start (EV_P_ ev_check *w)
2907{ 3632{
2908 if (expect_false (ev_is_active (w))) 3633 if (expect_false (ev_is_active (w)))
2909 return; 3634 return;
… …
2935 3660
2936 ev_stop (EV_A_ (W)w); 3661 ev_stop (EV_A_ (W)w);
2937 3662
2938 EV_FREQUENT_CHECK; 3663 EV_FREQUENT_CHECK;
2939} 3664}
3665#endif
2940 3666
2941#if EV_EMBED_ENABLE 3667#if EV_EMBED_ENABLE
2942void noinline 3668void noinline
2943ev_embed_sweep (EV_P_ ev_embed *w) 3669ev_embed_sweep (EV_P_ ev_embed *w)
2944{ 3670{
2945 ev_loop (w->other, EVLOOP_NONBLOCK); 3671 ev_run (w->other, EVRUN_NOWAIT);
2946} 3672}
2947 3673
2948static void 3674static void
2949embed_io_cb (EV_P_ ev_io *io, int revents) 3675embed_io_cb (EV_P_ ev_io *io, int revents)
2950{ 3676{
2951 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3677 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2952 3678
2953 if (ev_cb (w)) 3679 if (ev_cb (w))
2954 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3680 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2955 else 3681 else
2956 ev_loop (w->other, EVLOOP_NONBLOCK); 3682 ev_run (w->other, EVRUN_NOWAIT);
2957} 3683}
2958 3684
2959static void 3685static void
2960embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3686embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2961{ 3687{
2962 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3688 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2963 3689
2964 { 3690 {
2965 struct ev_loop *loop = w->other; 3691 EV_P = w->other;
2966 3692
2967 while (fdchangecnt) 3693 while (fdchangecnt)
2968 { 3694 {
2969 fd_reify (EV_A); 3695 fd_reify (EV_A);
2970 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3696 ev_run (EV_A_ EVRUN_NOWAIT);
2971 } 3697 }
2972 } 3698 }
2973} 3699}
2974 3700
2975static void 3701static void
… …
2978 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3704 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2979 3705
2980 ev_embed_stop (EV_A_ w); 3706 ev_embed_stop (EV_A_ w);
2981 3707
2982 { 3708 {
2983 struct ev_loop *loop = w->other; 3709 EV_P = w->other;
2984 3710
2985 ev_loop_fork (EV_A); 3711 ev_loop_fork (EV_A);
2986 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3712 ev_run (EV_A_ EVRUN_NOWAIT);
2987 } 3713 }
2988 3714
2989 ev_embed_start (EV_A_ w); 3715 ev_embed_start (EV_A_ w);
2990} 3716}
2991 3717
… …
3002{ 3728{
3003 if (expect_false (ev_is_active (w))) 3729 if (expect_false (ev_is_active (w)))
3004 return; 3730 return;
3005 3731
3006 { 3732 {
3007 struct ev_loop *loop = w->other; 3733 EV_P = w->other;
3008 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3734 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3009 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3735 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3010 } 3736 }
3011 3737
3012 EV_FREQUENT_CHECK; 3738 EV_FREQUENT_CHECK;
… …
3039 3765
3040 ev_io_stop (EV_A_ &w->io); 3766 ev_io_stop (EV_A_ &w->io);
3041 ev_prepare_stop (EV_A_ &w->prepare); 3767 ev_prepare_stop (EV_A_ &w->prepare);
3042 ev_fork_stop (EV_A_ &w->fork); 3768 ev_fork_stop (EV_A_ &w->fork);
3043 3769
3770 ev_stop (EV_A_ (W)w);
3771
3044 EV_FREQUENT_CHECK; 3772 EV_FREQUENT_CHECK;
3045} 3773}
3046#endif 3774#endif
3047 3775
3048#if EV_FORK_ENABLE 3776#if EV_FORK_ENABLE
… …
3081 3809
3082 EV_FREQUENT_CHECK; 3810 EV_FREQUENT_CHECK;
3083} 3811}
3084#endif 3812#endif
3085 3813
3814#if EV_CLEANUP_ENABLE
3815void
3816ev_cleanup_start (EV_P_ ev_cleanup *w)
3817{
3818 if (expect_false (ev_is_active (w)))
3819 return;
3820
3821 EV_FREQUENT_CHECK;
3822
3823 ev_start (EV_A_ (W)w, ++cleanupcnt);
3824 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3825 cleanups [cleanupcnt - 1] = w;
3826
3827 /* cleanup watchers should never keep a refcount on the loop */
3828 ev_unref (EV_A);
3829 EV_FREQUENT_CHECK;
3830}
3831
3832void
3833ev_cleanup_stop (EV_P_ ev_cleanup *w)
3834{
3835 clear_pending (EV_A_ (W)w);
3836 if (expect_false (!ev_is_active (w)))
3837 return;
3838
3839 EV_FREQUENT_CHECK;
3840 ev_ref (EV_A);
3841
3842 {
3843 int active = ev_active (w);
3844
3845 cleanups [active - 1] = cleanups [--cleanupcnt];
3846 ev_active (cleanups [active - 1]) = active;
3847 }
3848
3849 ev_stop (EV_A_ (W)w);
3850
3851 EV_FREQUENT_CHECK;
3852}
3853#endif
3854
3086#if EV_ASYNC_ENABLE 3855#if EV_ASYNC_ENABLE
3087void 3856void
3088ev_async_start (EV_P_ ev_async *w) 3857ev_async_start (EV_P_ ev_async *w)
3089{ 3858{
3090 if (expect_false (ev_is_active (w))) 3859 if (expect_false (ev_is_active (w)))
3091 return; 3860 return;
3092 3861
3862 w->sent = 0;
3863
3093 evpipe_init (EV_A); 3864 evpipe_init (EV_A);
3094 3865
3095 EV_FREQUENT_CHECK; 3866 EV_FREQUENT_CHECK;
3096 3867
3097 ev_start (EV_A_ (W)w, ++asynccnt); 3868 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3124 3895
3125void 3896void
3126ev_async_send (EV_P_ ev_async *w) 3897ev_async_send (EV_P_ ev_async *w)
3127{ 3898{
3128 w->sent = 1; 3899 w->sent = 1;
3129 evpipe_write (EV_A_ &gotasync); 3900 evpipe_write (EV_A_ &async_pending);
3130} 3901}
3131#endif 3902#endif
3132 3903
3133/*****************************************************************************/ 3904/*****************************************************************************/
3134 3905
… …
3174{ 3945{
3175 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3946 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3176 3947
3177 if (expect_false (!once)) 3948 if (expect_false (!once))
3178 { 3949 {
3179 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3950 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3180 return; 3951 return;
3181 } 3952 }
3182 3953
3183 once->cb = cb; 3954 once->cb = cb;
3184 once->arg = arg; 3955 once->arg = arg;
… …
3198 } 3969 }
3199} 3970}
3200 3971
3201/*****************************************************************************/ 3972/*****************************************************************************/
3202 3973
3203#if 0 3974#if EV_WALK_ENABLE
3204void 3975void ecb_cold
3205ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 3976ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3206{ 3977{
3207 int i, j; 3978 int i, j;
3208 ev_watcher_list *wl, *wn; 3979 ev_watcher_list *wl, *wn;
3209 3980
… …
3224#if EV_USE_INOTIFY 3995#if EV_USE_INOTIFY
3225 if (ev_cb ((ev_io *)wl) == infy_cb) 3996 if (ev_cb ((ev_io *)wl) == infy_cb)
3226 ; 3997 ;
3227 else 3998 else
3228#endif 3999#endif
3229 if ((ev_io *)wl != &pipeev) 4000 if ((ev_io *)wl != &pipe_w)
3230 if (types & EV_IO) 4001 if (types & EV_IO)
3231 cb (EV_A_ EV_IO, wl); 4002 cb (EV_A_ EV_IO, wl);
3232 4003
3233 wl = wn; 4004 wl = wn;
3234 } 4005 }
… …
3271 if (types & EV_ASYNC) 4042 if (types & EV_ASYNC)
3272 for (i = asynccnt; i--; ) 4043 for (i = asynccnt; i--; )
3273 cb (EV_A_ EV_ASYNC, asyncs [i]); 4044 cb (EV_A_ EV_ASYNC, asyncs [i]);
3274#endif 4045#endif
3275 4046
4047#if EV_PREPARE_ENABLE
3276 if (types & EV_PREPARE) 4048 if (types & EV_PREPARE)
3277 for (i = preparecnt; i--; ) 4049 for (i = preparecnt; i--; )
3278#if EV_EMBED_ENABLE 4050# if EV_EMBED_ENABLE
3279 if (ev_cb (prepares [i]) != embed_prepare_cb) 4051 if (ev_cb (prepares [i]) != embed_prepare_cb)
3280#endif 4052# endif
3281 cb (EV_A_ EV_PREPARE, prepares [i]); 4053 cb (EV_A_ EV_PREPARE, prepares [i]);
4054#endif
3282 4055
4056#if EV_CHECK_ENABLE
3283 if (types & EV_CHECK) 4057 if (types & EV_CHECK)
3284 for (i = checkcnt; i--; ) 4058 for (i = checkcnt; i--; )
3285 cb (EV_A_ EV_CHECK, checks [i]); 4059 cb (EV_A_ EV_CHECK, checks [i]);
4060#endif
3286 4061
4062#if EV_SIGNAL_ENABLE
3287 if (types & EV_SIGNAL) 4063 if (types & EV_SIGNAL)
3288 for (i = 0; i < signalmax; ++i) 4064 for (i = 0; i < EV_NSIG - 1; ++i)
3289 for (wl = signals [i].head; wl; ) 4065 for (wl = signals [i].head; wl; )
3290 { 4066 {
3291 wn = wl->next; 4067 wn = wl->next;
3292 cb (EV_A_ EV_SIGNAL, wl); 4068 cb (EV_A_ EV_SIGNAL, wl);
3293 wl = wn; 4069 wl = wn;
3294 } 4070 }
4071#endif
3295 4072
4073#if EV_CHILD_ENABLE
3296 if (types & EV_CHILD) 4074 if (types & EV_CHILD)
3297 for (i = EV_PID_HASHSIZE; i--; ) 4075 for (i = (EV_PID_HASHSIZE); i--; )
3298 for (wl = childs [i]; wl; ) 4076 for (wl = childs [i]; wl; )
3299 { 4077 {
3300 wn = wl->next; 4078 wn = wl->next;
3301 cb (EV_A_ EV_CHILD, wl); 4079 cb (EV_A_ EV_CHILD, wl);
3302 wl = wn; 4080 wl = wn;
3303 } 4081 }
4082#endif
3304/* EV_STAT 0x00001000 /* stat data changed */ 4083/* EV_STAT 0x00001000 /* stat data changed */
3305/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4084/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3306} 4085}
3307#endif 4086#endif
3308 4087
3309#if EV_MULTIPLICITY 4088#if EV_MULTIPLICITY
3310 #include "ev_wrap.h" 4089 #include "ev_wrap.h"
3311#endif 4090#endif
3312 4091
3313#ifdef __cplusplus 4092EV_CPP(})
3314}
3315#endif
3316 4093

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