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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 1.390 by root, Thu Aug 4 11:58:02 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 _MSC_VER >= 1400 /* VC++ 2005 */
517 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
518 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
519 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
520 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
521 #elif defined(_WIN32)
522 #include <WinNT.h>
523 #define ECB_MEMORY_FENCE MemoryBarrier ()
524 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
525 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
526 #endif
527#endif
528
529#ifndef ECB_MEMORY_FENCE
530 #include <pthread.h>
531
532 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
533 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
534 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
535 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
536#endif
537
538#if ECB_GCC_VERSION(3,1)
539 #define ecb_attribute(attrlist) __attribute__(attrlist)
540 #define ecb_is_constant(expr) __builtin_constant_p (expr)
541 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
542 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
543#else
544 #define ecb_attribute(attrlist)
545 #define ecb_is_constant(expr) 0
546 #define ecb_expect(expr,value) (expr)
547 #define ecb_prefetch(addr,rw,locality)
548#endif
549
550#define ecb_noinline ecb_attribute ((__noinline__))
551#define ecb_noreturn ecb_attribute ((__noreturn__))
552#define ecb_unused ecb_attribute ((__unused__))
553#define ecb_const ecb_attribute ((__const__))
554#define ecb_pure ecb_attribute ((__pure__))
555
556#if ECB_GCC_VERSION(4,3)
557 #define ecb_artificial ecb_attribute ((__artificial__))
558 #define ecb_hot ecb_attribute ((__hot__))
559 #define ecb_cold ecb_attribute ((__cold__))
560#else
561 #define ecb_artificial
562 #define ecb_hot
563 #define ecb_cold
564#endif
565
566/* put around conditional expressions if you are very sure that the */
567/* expression is mostly true or mostly false. note that these return */
568/* booleans, not the expression. */
379#define expect_false(expr) expect ((expr) != 0, 0) 569#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 570#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
571/* ecb.h end */
572
573#define expect_false(cond) ecb_expect_false (cond)
574#define expect_true(cond) ecb_expect_true (cond)
575#define noinline ecb_noinline
576
381#define inline_size static inline 577#define inline_size ecb_inline
382 578
383#if EV_MINIMAL 579#if EV_FEATURE_CODE
580# define inline_speed ecb_inline
581#else
384# define inline_speed static noinline 582# define inline_speed static noinline
583#endif
584
585#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
586
587#if EV_MINPRI == EV_MAXPRI
588# define ABSPRI(w) (((W)w), 0)
385#else 589#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) 590# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
591#endif
391 592
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 593#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 594#define EMPTY2(a,b) /* used to suppress some warnings */
394 595
395typedef ev_watcher *W; 596typedef ev_watcher *W;
… …
399#define ev_active(w) ((W)(w))->active 600#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 601#define ev_at(w) ((WT)(w))->at
401 602
402#if EV_USE_REALTIME 603#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 604/* 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 */ 605/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 606static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 607#endif
407 608
408#if EV_USE_MONOTONIC 609#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 610static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 611#endif
411 612
613#ifndef EV_FD_TO_WIN32_HANDLE
614# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
615#endif
616#ifndef EV_WIN32_HANDLE_TO_FD
617# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
618#endif
619#ifndef EV_WIN32_CLOSE_FD
620# define EV_WIN32_CLOSE_FD(fd) close (fd)
621#endif
622
412#ifdef _WIN32 623#ifdef _WIN32
413# include "ev_win32.c" 624# include "ev_win32.c"
414#endif 625#endif
415 626
416/*****************************************************************************/ 627/*****************************************************************************/
417 628
629/* define a suitable floor function (only used by periodics atm) */
630
631#if EV_USE_FLOOR
632# include <math.h>
633# define ev_floor(v) floor (v)
634#else
635
636#include <float.h>
637
638/* a floor() replacement function, should be independent of ev_tstamp type */
639static ev_tstamp noinline
640ev_floor (ev_tstamp v)
641{
642 /* the choice of shift factor is not terribly important */
643#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
644 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
645#else
646 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
647#endif
648
649 /* argument too large for an unsigned long? */
650 if (expect_false (v >= shift))
651 {
652 ev_tstamp f;
653
654 if (v == v - 1.)
655 return v; /* very large number */
656
657 f = shift * ev_floor (v * (1. / shift));
658 return f + ev_floor (v - f);
659 }
660
661 /* special treatment for negative args? */
662 if (expect_false (v < 0.))
663 {
664 ev_tstamp f = -ev_floor (-v);
665
666 return f - (f == v ? 0 : 1);
667 }
668
669 /* fits into an unsigned long */
670 return (unsigned long)v;
671}
672
673#endif
674
675/*****************************************************************************/
676
677#ifdef __linux
678# include <sys/utsname.h>
679#endif
680
681static unsigned int noinline ecb_cold
682ev_linux_version (void)
683{
684#ifdef __linux
685 unsigned int v = 0;
686 struct utsname buf;
687 int i;
688 char *p = buf.release;
689
690 if (uname (&buf))
691 return 0;
692
693 for (i = 3+1; --i; )
694 {
695 unsigned int c = 0;
696
697 for (;;)
698 {
699 if (*p >= '0' && *p <= '9')
700 c = c * 10 + *p++ - '0';
701 else
702 {
703 p += *p == '.';
704 break;
705 }
706 }
707
708 v = (v << 8) | c;
709 }
710
711 return v;
712#else
713 return 0;
714#endif
715}
716
717/*****************************************************************************/
718
719#if EV_AVOID_STDIO
720static void noinline ecb_cold
721ev_printerr (const char *msg)
722{
723 write (STDERR_FILENO, msg, strlen (msg));
724}
725#endif
726
418static void (*syserr_cb)(const char *msg); 727static void (*syserr_cb)(const char *msg);
419 728
420void 729void ecb_cold
421ev_set_syserr_cb (void (*cb)(const char *msg)) 730ev_set_syserr_cb (void (*cb)(const char *msg))
422{ 731{
423 syserr_cb = cb; 732 syserr_cb = cb;
424} 733}
425 734
426static void noinline 735static void noinline ecb_cold
427ev_syserr (const char *msg) 736ev_syserr (const char *msg)
428{ 737{
429 if (!msg) 738 if (!msg)
430 msg = "(libev) system error"; 739 msg = "(libev) system error";
431 740
432 if (syserr_cb) 741 if (syserr_cb)
433 syserr_cb (msg); 742 syserr_cb (msg);
434 else 743 else
435 { 744 {
745#if EV_AVOID_STDIO
746 ev_printerr (msg);
747 ev_printerr (": ");
748 ev_printerr (strerror (errno));
749 ev_printerr ("\n");
750#else
436 perror (msg); 751 perror (msg);
752#endif
437 abort (); 753 abort ();
438 } 754 }
439} 755}
440 756
441static void * 757static void *
442ev_realloc_emul (void *ptr, long size) 758ev_realloc_emul (void *ptr, long size)
443{ 759{
760#if __GLIBC__
761 return realloc (ptr, size);
762#else
444 /* some systems, notably openbsd and darwin, fail to properly 763 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 764 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 765 * the single unix specification, so work around them here.
447 */ 766 */
448 767
449 if (size) 768 if (size)
450 return realloc (ptr, size); 769 return realloc (ptr, size);
451 770
452 free (ptr); 771 free (ptr);
453 return 0; 772 return 0;
773#endif
454} 774}
455 775
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 776static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
457 777
458void 778void ecb_cold
459ev_set_allocator (void *(*cb)(void *ptr, long size)) 779ev_set_allocator (void *(*cb)(void *ptr, long size))
460{ 780{
461 alloc = cb; 781 alloc = cb;
462} 782}
463 783
… …
466{ 786{
467 ptr = alloc (ptr, size); 787 ptr = alloc (ptr, size);
468 788
469 if (!ptr && size) 789 if (!ptr && size)
470 { 790 {
791#if EV_AVOID_STDIO
792 ev_printerr ("(libev) memory allocation failed, aborting.\n");
793#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 794 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
795#endif
472 abort (); 796 abort ();
473 } 797 }
474 798
475 return ptr; 799 return ptr;
476} 800}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 802#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 803#define ev_free(ptr) ev_realloc ((ptr), 0)
480 804
481/*****************************************************************************/ 805/*****************************************************************************/
482 806
807/* set in reify when reification needed */
808#define EV_ANFD_REIFY 1
809
810/* file descriptor info structure */
483typedef struct 811typedef struct
484{ 812{
485 WL head; 813 WL head;
486 unsigned char events; 814 unsigned char events; /* the events watched for */
487 unsigned char reify; 815 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 */ 816 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489 unsigned char unused; 817 unsigned char unused;
490#if EV_USE_EPOLL 818#if EV_USE_EPOLL
491 unsigned int egen; /* generation counter to counter epoll bugs */ 819 unsigned int egen; /* generation counter to counter epoll bugs */
492#endif 820#endif
493#if EV_SELECT_IS_WINSOCKET 821#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
494 SOCKET handle; 822 SOCKET handle;
495#endif 823#endif
824#if EV_USE_IOCP
825 OVERLAPPED or, ow;
826#endif
496} ANFD; 827} ANFD;
497 828
829/* stores the pending event set for a given watcher */
498typedef struct 830typedef struct
499{ 831{
500 W w; 832 W w;
501 int events; 833 int events; /* the pending event set for the given watcher */
502} ANPENDING; 834} ANPENDING;
503 835
504#if EV_USE_INOTIFY 836#if EV_USE_INOTIFY
505/* hash table entry per inotify-id */ 837/* hash table entry per inotify-id */
506typedef struct 838typedef struct
… …
509} ANFS; 841} ANFS;
510#endif 842#endif
511 843
512/* Heap Entry */ 844/* Heap Entry */
513#if EV_HEAP_CACHE_AT 845#if EV_HEAP_CACHE_AT
846 /* a heap element */
514 typedef struct { 847 typedef struct {
515 ev_tstamp at; 848 ev_tstamp at;
516 WT w; 849 WT w;
517 } ANHE; 850 } ANHE;
518 851
519 #define ANHE_w(he) (he).w /* access watcher, read-write */ 852 #define ANHE_w(he) (he).w /* access watcher, read-write */
520 #define ANHE_at(he) (he).at /* access cached at, read-only */ 853 #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 */ 854 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522#else 855#else
856 /* a heap element */
523 typedef WT ANHE; 857 typedef WT ANHE;
524 858
525 #define ANHE_w(he) (he) 859 #define ANHE_w(he) (he)
526 #define ANHE_at(he) (he)->at 860 #define ANHE_at(he) (he)->at
527 #define ANHE_at_cache(he) 861 #define ANHE_at_cache(he)
… …
551 885
552 static int ev_default_loop_ptr; 886 static int ev_default_loop_ptr;
553 887
554#endif 888#endif
555 889
890#if EV_FEATURE_API
891# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
892# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
893# define EV_INVOKE_PENDING invoke_cb (EV_A)
894#else
895# define EV_RELEASE_CB (void)0
896# define EV_ACQUIRE_CB (void)0
897# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
898#endif
899
900#define EVBREAK_RECURSE 0x80
901
556/*****************************************************************************/ 902/*****************************************************************************/
557 903
904#ifndef EV_HAVE_EV_TIME
558ev_tstamp 905ev_tstamp
559ev_time (void) 906ev_time (void)
560{ 907{
561#if EV_USE_REALTIME 908#if EV_USE_REALTIME
562 if (expect_true (have_realtime)) 909 if (expect_true (have_realtime))
… …
569 916
570 struct timeval tv; 917 struct timeval tv;
571 gettimeofday (&tv, 0); 918 gettimeofday (&tv, 0);
572 return tv.tv_sec + tv.tv_usec * 1e-6; 919 return tv.tv_sec + tv.tv_usec * 1e-6;
573} 920}
921#endif
574 922
575inline_size ev_tstamp 923inline_size ev_tstamp
576get_clock (void) 924get_clock (void)
577{ 925{
578#if EV_USE_MONOTONIC 926#if EV_USE_MONOTONIC
… …
601 if (delay > 0.) 949 if (delay > 0.)
602 { 950 {
603#if EV_USE_NANOSLEEP 951#if EV_USE_NANOSLEEP
604 struct timespec ts; 952 struct timespec ts;
605 953
606 ts.tv_sec = (time_t)delay; 954 EV_TS_SET (ts, delay);
607 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
608
609 nanosleep (&ts, 0); 955 nanosleep (&ts, 0);
610#elif defined(_WIN32) 956#elif defined(_WIN32)
611 Sleep ((unsigned long)(delay * 1e3)); 957 Sleep ((unsigned long)(delay * 1e3));
612#else 958#else
613 struct timeval tv; 959 struct timeval tv;
614 960
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 */ 961 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 962 /* something not guaranteed by newer posix versions, but guaranteed */
620 /* by older ones */ 963 /* by older ones */
964 EV_TV_SET (tv, delay);
621 select (0, 0, 0, 0, &tv); 965 select (0, 0, 0, 0, &tv);
622#endif 966#endif
623 } 967 }
624} 968}
625 969
626/*****************************************************************************/ 970/*****************************************************************************/
627 971
628#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 972#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629 973
974/* find a suitable new size for the given array, */
975/* hopefully by rounding to a nice-to-malloc size */
630inline_size int 976inline_size int
631array_nextsize (int elem, int cur, int cnt) 977array_nextsize (int elem, int cur, int cnt)
632{ 978{
633 int ncur = cur + 1; 979 int ncur = cur + 1;
634 980
… …
646 } 992 }
647 993
648 return ncur; 994 return ncur;
649} 995}
650 996
651static noinline void * 997static void * noinline ecb_cold
652array_realloc (int elem, void *base, int *cur, int cnt) 998array_realloc (int elem, void *base, int *cur, int cnt)
653{ 999{
654 *cur = array_nextsize (elem, *cur, cnt); 1000 *cur = array_nextsize (elem, *cur, cnt);
655 return ev_realloc (base, elem * *cur); 1001 return ev_realloc (base, elem * *cur);
656} 1002}
… …
659 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1005 memset ((void *)(base), 0, sizeof (*(base)) * (count))
660 1006
661#define array_needsize(type,base,cur,cnt,init) \ 1007#define array_needsize(type,base,cur,cnt,init) \
662 if (expect_false ((cnt) > (cur))) \ 1008 if (expect_false ((cnt) > (cur))) \
663 { \ 1009 { \
664 int ocur_ = (cur); \ 1010 int ecb_unused ocur_ = (cur); \
665 (base) = (type *)array_realloc \ 1011 (base) = (type *)array_realloc \
666 (sizeof (type), (base), &(cur), (cnt)); \ 1012 (sizeof (type), (base), &(cur), (cnt)); \
667 init ((base) + (ocur_), (cur) - ocur_); \ 1013 init ((base) + (ocur_), (cur) - ocur_); \
668 } 1014 }
669 1015
… …
680#define array_free(stem, idx) \ 1026#define array_free(stem, idx) \
681 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1027 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682 1028
683/*****************************************************************************/ 1029/*****************************************************************************/
684 1030
1031/* dummy callback for pending events */
1032static void noinline
1033pendingcb (EV_P_ ev_prepare *w, int revents)
1034{
1035}
1036
685void noinline 1037void noinline
686ev_feed_event (EV_P_ void *w, int revents) 1038ev_feed_event (EV_P_ void *w, int revents)
687{ 1039{
688 W w_ = (W)w; 1040 W w_ = (W)w;
689 int pri = ABSPRI (w_); 1041 int pri = ABSPRI (w_);
… …
724} 1076}
725 1077
726/*****************************************************************************/ 1078/*****************************************************************************/
727 1079
728inline_speed void 1080inline_speed void
729fd_event (EV_P_ int fd, int revents) 1081fd_event_nocheck (EV_P_ int fd, int revents)
730{ 1082{
731 ANFD *anfd = anfds + fd; 1083 ANFD *anfd = anfds + fd;
732 ev_io *w; 1084 ev_io *w;
733 1085
734 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1086 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
738 if (ev) 1090 if (ev)
739 ev_feed_event (EV_A_ (W)w, ev); 1091 ev_feed_event (EV_A_ (W)w, ev);
740 } 1092 }
741} 1093}
742 1094
1095/* do not submit kernel events for fds that have reify set */
1096/* because that means they changed while we were polling for new events */
1097inline_speed void
1098fd_event (EV_P_ int fd, int revents)
1099{
1100 ANFD *anfd = anfds + fd;
1101
1102 if (expect_true (!anfd->reify))
1103 fd_event_nocheck (EV_A_ fd, revents);
1104}
1105
743void 1106void
744ev_feed_fd_event (EV_P_ int fd, int revents) 1107ev_feed_fd_event (EV_P_ int fd, int revents)
745{ 1108{
746 if (fd >= 0 && fd < anfdmax) 1109 if (fd >= 0 && fd < anfdmax)
747 fd_event (EV_A_ fd, revents); 1110 fd_event_nocheck (EV_A_ fd, revents);
748} 1111}
749 1112
1113/* make sure the external fd watch events are in-sync */
1114/* with the kernel/libev internal state */
750inline_size void 1115inline_size void
751fd_reify (EV_P) 1116fd_reify (EV_P)
752{ 1117{
753 int i; 1118 int i;
1119
1120#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1121 for (i = 0; i < fdchangecnt; ++i)
1122 {
1123 int fd = fdchanges [i];
1124 ANFD *anfd = anfds + fd;
1125
1126 if (anfd->reify & EV__IOFDSET && anfd->head)
1127 {
1128 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1129
1130 if (handle != anfd->handle)
1131 {
1132 unsigned long arg;
1133
1134 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1135
1136 /* handle changed, but fd didn't - we need to do it in two steps */
1137 backend_modify (EV_A_ fd, anfd->events, 0);
1138 anfd->events = 0;
1139 anfd->handle = handle;
1140 }
1141 }
1142 }
1143#endif
754 1144
755 for (i = 0; i < fdchangecnt; ++i) 1145 for (i = 0; i < fdchangecnt; ++i)
756 { 1146 {
757 int fd = fdchanges [i]; 1147 int fd = fdchanges [i];
758 ANFD *anfd = anfds + fd; 1148 ANFD *anfd = anfds + fd;
759 ev_io *w; 1149 ev_io *w;
760 1150
761 unsigned char events = 0; 1151 unsigned char o_events = anfd->events;
1152 unsigned char o_reify = anfd->reify;
762 1153
763 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1154 anfd->reify = 0;
764 events |= (unsigned char)w->events;
765 1155
766#if EV_SELECT_IS_WINSOCKET 1156 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
767 if (events)
768 { 1157 {
769 unsigned long arg; 1158 anfd->events = 0;
770 #ifdef EV_FD_TO_WIN32_HANDLE 1159
771 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1160 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
772 #else 1161 anfd->events |= (unsigned char)w->events;
773 anfd->handle = _get_osfhandle (fd); 1162
774 #endif 1163 if (o_events != anfd->events)
775 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1164 o_reify = EV__IOFDSET; /* actually |= */
776 } 1165 }
777#endif
778 1166
779 { 1167 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); 1168 backend_modify (EV_A_ fd, o_events, anfd->events);
788 }
789 } 1169 }
790 1170
791 fdchangecnt = 0; 1171 fdchangecnt = 0;
792} 1172}
793 1173
1174/* something about the given fd changed */
794inline_size void 1175inline_size void
795fd_change (EV_P_ int fd, int flags) 1176fd_change (EV_P_ int fd, int flags)
796{ 1177{
797 unsigned char reify = anfds [fd].reify; 1178 unsigned char reify = anfds [fd].reify;
798 anfds [fd].reify |= flags; 1179 anfds [fd].reify |= flags;
… …
803 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1184 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
804 fdchanges [fdchangecnt - 1] = fd; 1185 fdchanges [fdchangecnt - 1] = fd;
805 } 1186 }
806} 1187}
807 1188
1189/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
808inline_speed void 1190inline_speed void ecb_cold
809fd_kill (EV_P_ int fd) 1191fd_kill (EV_P_ int fd)
810{ 1192{
811 ev_io *w; 1193 ev_io *w;
812 1194
813 while ((w = (ev_io *)anfds [fd].head)) 1195 while ((w = (ev_io *)anfds [fd].head))
… …
815 ev_io_stop (EV_A_ w); 1197 ev_io_stop (EV_A_ w);
816 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1198 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
817 } 1199 }
818} 1200}
819 1201
1202/* check whether the given fd is actually valid, for error recovery */
820inline_size int 1203inline_size int ecb_cold
821fd_valid (int fd) 1204fd_valid (int fd)
822{ 1205{
823#ifdef _WIN32 1206#ifdef _WIN32
824 return _get_osfhandle (fd) != -1; 1207 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
825#else 1208#else
826 return fcntl (fd, F_GETFD) != -1; 1209 return fcntl (fd, F_GETFD) != -1;
827#endif 1210#endif
828} 1211}
829 1212
830/* called on EBADF to verify fds */ 1213/* called on EBADF to verify fds */
831static void noinline 1214static void noinline ecb_cold
832fd_ebadf (EV_P) 1215fd_ebadf (EV_P)
833{ 1216{
834 int fd; 1217 int fd;
835 1218
836 for (fd = 0; fd < anfdmax; ++fd) 1219 for (fd = 0; fd < anfdmax; ++fd)
… …
838 if (!fd_valid (fd) && errno == EBADF) 1221 if (!fd_valid (fd) && errno == EBADF)
839 fd_kill (EV_A_ fd); 1222 fd_kill (EV_A_ fd);
840} 1223}
841 1224
842/* called on ENOMEM in select/poll to kill some fds and retry */ 1225/* called on ENOMEM in select/poll to kill some fds and retry */
843static void noinline 1226static void noinline ecb_cold
844fd_enomem (EV_P) 1227fd_enomem (EV_P)
845{ 1228{
846 int fd; 1229 int fd;
847 1230
848 for (fd = anfdmax; fd--; ) 1231 for (fd = anfdmax; fd--; )
849 if (anfds [fd].events) 1232 if (anfds [fd].events)
850 { 1233 {
851 fd_kill (EV_A_ fd); 1234 fd_kill (EV_A_ fd);
852 return; 1235 break;
853 } 1236 }
854} 1237}
855 1238
856/* usually called after fork if backend needs to re-arm all fds from scratch */ 1239/* usually called after fork if backend needs to re-arm all fds from scratch */
857static void noinline 1240static void noinline
… …
862 for (fd = 0; fd < anfdmax; ++fd) 1245 for (fd = 0; fd < anfdmax; ++fd)
863 if (anfds [fd].events) 1246 if (anfds [fd].events)
864 { 1247 {
865 anfds [fd].events = 0; 1248 anfds [fd].events = 0;
866 anfds [fd].emask = 0; 1249 anfds [fd].emask = 0;
867 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1250 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
868 } 1251 }
869} 1252}
870 1253
1254/* used to prepare libev internal fd's */
1255/* this is not fork-safe */
1256inline_speed void
1257fd_intern (int fd)
1258{
1259#ifdef _WIN32
1260 unsigned long arg = 1;
1261 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1262#else
1263 fcntl (fd, F_SETFD, FD_CLOEXEC);
1264 fcntl (fd, F_SETFL, O_NONBLOCK);
1265#endif
1266}
1267
871/*****************************************************************************/ 1268/*****************************************************************************/
872 1269
873/* 1270/*
874 * the heap functions want a real array index. array index 0 uis guaranteed to not 1271 * 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 1272 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
876 * the branching factor of the d-tree. 1273 * the branching factor of the d-tree.
877 */ 1274 */
878 1275
879/* 1276/*
… …
947 1344
948 for (;;) 1345 for (;;)
949 { 1346 {
950 int c = k << 1; 1347 int c = k << 1;
951 1348
952 if (c > N + HEAP0 - 1) 1349 if (c >= N + HEAP0)
953 break; 1350 break;
954 1351
955 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1352 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
956 ? 1 : 0; 1353 ? 1 : 0;
957 1354
… …
989 1386
990 heap [k] = he; 1387 heap [k] = he;
991 ev_active (ANHE_w (he)) = k; 1388 ev_active (ANHE_w (he)) = k;
992} 1389}
993 1390
1391/* move an element suitably so it is in a correct place */
994inline_size void 1392inline_size void
995adjustheap (ANHE *heap, int N, int k) 1393adjustheap (ANHE *heap, int N, int k)
996{ 1394{
997 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1395 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
998 upheap (heap, k); 1396 upheap (heap, k);
999 else 1397 else
1000 downheap (heap, N, k); 1398 downheap (heap, N, k);
1001} 1399}
1002 1400
… …
1012 upheap (heap, i + HEAP0); 1410 upheap (heap, i + HEAP0);
1013} 1411}
1014 1412
1015/*****************************************************************************/ 1413/*****************************************************************************/
1016 1414
1415/* associate signal watchers to a signal signal */
1017typedef struct 1416typedef struct
1018{ 1417{
1418 EV_ATOMIC_T pending;
1419#if EV_MULTIPLICITY
1420 EV_P;
1421#endif
1019 WL head; 1422 WL head;
1020 EV_ATOMIC_T gotsig;
1021} ANSIG; 1423} ANSIG;
1022 1424
1023static ANSIG *signals; 1425static ANSIG signals [EV_NSIG - 1];
1024static int signalmax;
1025
1026static EV_ATOMIC_T gotsig;
1027 1426
1028/*****************************************************************************/ 1427/*****************************************************************************/
1029 1428
1030inline_speed void 1429#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 1430
1042static void noinline 1431static void noinline ecb_cold
1043evpipe_init (EV_P) 1432evpipe_init (EV_P)
1044{ 1433{
1045 if (!ev_is_active (&pipeev)) 1434 if (!ev_is_active (&pipe_w))
1046 { 1435 {
1047#if EV_USE_EVENTFD 1436# if EV_USE_EVENTFD
1437 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1438 if (evfd < 0 && errno == EINVAL)
1048 if ((evfd = eventfd (0, 0)) >= 0) 1439 evfd = eventfd (0, 0);
1440
1441 if (evfd >= 0)
1049 { 1442 {
1050 evpipe [0] = -1; 1443 evpipe [0] = -1;
1051 fd_intern (evfd); 1444 fd_intern (evfd); /* doing it twice doesn't hurt */
1052 ev_io_set (&pipeev, evfd, EV_READ); 1445 ev_io_set (&pipe_w, evfd, EV_READ);
1053 } 1446 }
1054 else 1447 else
1055#endif 1448# endif
1056 { 1449 {
1057 while (pipe (evpipe)) 1450 while (pipe (evpipe))
1058 ev_syserr ("(libev) error creating signal/async pipe"); 1451 ev_syserr ("(libev) error creating signal/async pipe");
1059 1452
1060 fd_intern (evpipe [0]); 1453 fd_intern (evpipe [0]);
1061 fd_intern (evpipe [1]); 1454 fd_intern (evpipe [1]);
1062 ev_io_set (&pipeev, evpipe [0], EV_READ); 1455 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1063 } 1456 }
1064 1457
1065 ev_io_start (EV_A_ &pipeev); 1458 ev_io_start (EV_A_ &pipe_w);
1066 ev_unref (EV_A); /* watcher should not keep loop alive */ 1459 ev_unref (EV_A); /* watcher should not keep loop alive */
1067 } 1460 }
1068} 1461}
1069 1462
1070inline_size void 1463inline_speed void
1071evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1464evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1072{ 1465{
1073 if (!*flag) 1466 if (expect_true (*flag))
1467 return;
1468
1469 *flag = 1;
1470
1471 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1472
1473 pipe_write_skipped = 1;
1474
1475 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1476
1477 if (pipe_write_wanted)
1074 { 1478 {
1479 int old_errno;
1480
1481 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1482
1075 int old_errno = errno; /* save errno because write might clobber it */ 1483 old_errno = errno; /* save errno because write will clobber it */
1076
1077 *flag = 1;
1078 1484
1079#if EV_USE_EVENTFD 1485#if EV_USE_EVENTFD
1080 if (evfd >= 0) 1486 if (evfd >= 0)
1081 { 1487 {
1082 uint64_t counter = 1; 1488 uint64_t counter = 1;
1083 write (evfd, &counter, sizeof (uint64_t)); 1489 write (evfd, &counter, sizeof (uint64_t));
1084 } 1490 }
1085 else 1491 else
1086#endif 1492#endif
1493 {
1494 /* win32 people keep sending patches that change this write() to send() */
1495 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1496 /* so when you think this write should be a send instead, please find out */
1497 /* where your send() is from - it's definitely not the microsoft send, and */
1498 /* tell me. thank you. */
1087 write (evpipe [1], &old_errno, 1); 1499 write (evpipe [1], &(evpipe [1]), 1);
1500 }
1088 1501
1089 errno = old_errno; 1502 errno = old_errno;
1090 } 1503 }
1091} 1504}
1092 1505
1506/* called whenever the libev signal pipe */
1507/* got some events (signal, async) */
1093static void 1508static void
1094pipecb (EV_P_ ev_io *iow, int revents) 1509pipecb (EV_P_ ev_io *iow, int revents)
1095{ 1510{
1511 int i;
1512
1513 if (revents & EV_READ)
1514 {
1096#if EV_USE_EVENTFD 1515#if EV_USE_EVENTFD
1097 if (evfd >= 0) 1516 if (evfd >= 0)
1098 { 1517 {
1099 uint64_t counter; 1518 uint64_t counter;
1100 read (evfd, &counter, sizeof (uint64_t)); 1519 read (evfd, &counter, sizeof (uint64_t));
1101 } 1520 }
1102 else 1521 else
1103#endif 1522#endif
1104 { 1523 {
1105 char dummy; 1524 char dummy;
1525 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1106 read (evpipe [0], &dummy, 1); 1526 read (evpipe [0], &dummy, 1);
1527 }
1528 }
1529
1530 pipe_write_skipped = 0;
1531
1532#if EV_SIGNAL_ENABLE
1533 if (sig_pending)
1107 } 1534 {
1535 sig_pending = 0;
1108 1536
1109 if (gotsig && ev_is_default_loop (EV_A)) 1537 for (i = EV_NSIG - 1; i--; )
1110 { 1538 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); 1539 ev_feed_signal_event (EV_A_ i + 1);
1117 } 1540 }
1541#endif
1118 1542
1119#if EV_ASYNC_ENABLE 1543#if EV_ASYNC_ENABLE
1120 if (gotasync) 1544 if (async_pending)
1121 { 1545 {
1122 int i; 1546 async_pending = 0;
1123 gotasync = 0;
1124 1547
1125 for (i = asynccnt; i--; ) 1548 for (i = asynccnt; i--; )
1126 if (asyncs [i]->sent) 1549 if (asyncs [i]->sent)
1127 { 1550 {
1128 asyncs [i]->sent = 0; 1551 asyncs [i]->sent = 0;
… …
1132#endif 1555#endif
1133} 1556}
1134 1557
1135/*****************************************************************************/ 1558/*****************************************************************************/
1136 1559
1560void
1561ev_feed_signal (int signum)
1562{
1563#if EV_MULTIPLICITY
1564 EV_P = signals [signum - 1].loop;
1565
1566 if (!EV_A)
1567 return;
1568#endif
1569
1570 if (!ev_active (&pipe_w))
1571 return;
1572
1573 signals [signum - 1].pending = 1;
1574 evpipe_write (EV_A_ &sig_pending);
1575}
1576
1137static void 1577static void
1138ev_sighandler (int signum) 1578ev_sighandler (int signum)
1139{ 1579{
1140#if EV_MULTIPLICITY
1141 struct ev_loop *loop = &default_loop_struct;
1142#endif
1143
1144#if _WIN32 1580#ifdef _WIN32
1145 signal (signum, ev_sighandler); 1581 signal (signum, ev_sighandler);
1146#endif 1582#endif
1147 1583
1148 signals [signum - 1].gotsig = 1; 1584 ev_feed_signal (signum);
1149 evpipe_write (EV_A_ &gotsig);
1150} 1585}
1151 1586
1152void noinline 1587void noinline
1153ev_feed_signal_event (EV_P_ int signum) 1588ev_feed_signal_event (EV_P_ int signum)
1154{ 1589{
1155 WL w; 1590 WL w;
1156 1591
1592 if (expect_false (signum <= 0 || signum > EV_NSIG))
1593 return;
1594
1595 --signum;
1596
1157#if EV_MULTIPLICITY 1597#if EV_MULTIPLICITY
1158 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1598 /* it is permissible to try to feed a signal to the wrong loop */
1159#endif 1599 /* or, likely more useful, feeding a signal nobody is waiting for */
1160 1600
1161 --signum; 1601 if (expect_false (signals [signum].loop != EV_A))
1162
1163 if (signum < 0 || signum >= signalmax)
1164 return; 1602 return;
1603#endif
1165 1604
1166 signals [signum].gotsig = 0; 1605 signals [signum].pending = 0;
1167 1606
1168 for (w = signals [signum].head; w; w = w->next) 1607 for (w = signals [signum].head; w; w = w->next)
1169 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1608 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1170} 1609}
1171 1610
1611#if EV_USE_SIGNALFD
1612static void
1613sigfdcb (EV_P_ ev_io *iow, int revents)
1614{
1615 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1616
1617 for (;;)
1618 {
1619 ssize_t res = read (sigfd, si, sizeof (si));
1620
1621 /* not ISO-C, as res might be -1, but works with SuS */
1622 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1623 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1624
1625 if (res < (ssize_t)sizeof (si))
1626 break;
1627 }
1628}
1629#endif
1630
1631#endif
1632
1172/*****************************************************************************/ 1633/*****************************************************************************/
1173 1634
1635#if EV_CHILD_ENABLE
1174static WL childs [EV_PID_HASHSIZE]; 1636static WL childs [EV_PID_HASHSIZE];
1175
1176#ifndef _WIN32
1177 1637
1178static ev_signal childev; 1638static ev_signal childev;
1179 1639
1180#ifndef WIFCONTINUED 1640#ifndef WIFCONTINUED
1181# define WIFCONTINUED(status) 0 1641# define WIFCONTINUED(status) 0
1182#endif 1642#endif
1183 1643
1644/* handle a single child status event */
1184inline_speed void 1645inline_speed void
1185child_reap (EV_P_ int chain, int pid, int status) 1646child_reap (EV_P_ int chain, int pid, int status)
1186{ 1647{
1187 ev_child *w; 1648 ev_child *w;
1188 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1649 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1189 1650
1190 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1651 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1191 { 1652 {
1192 if ((w->pid == pid || !w->pid) 1653 if ((w->pid == pid || !w->pid)
1193 && (!traced || (w->flags & 1))) 1654 && (!traced || (w->flags & 1)))
1194 { 1655 {
1195 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1656 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1202 1663
1203#ifndef WCONTINUED 1664#ifndef WCONTINUED
1204# define WCONTINUED 0 1665# define WCONTINUED 0
1205#endif 1666#endif
1206 1667
1668/* called on sigchld etc., calls waitpid */
1207static void 1669static void
1208childcb (EV_P_ ev_signal *sw, int revents) 1670childcb (EV_P_ ev_signal *sw, int revents)
1209{ 1671{
1210 int pid, status; 1672 int pid, status;
1211 1673
… …
1219 /* make sure we are called again until all children have been reaped */ 1681 /* 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 */ 1682 /* 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); 1683 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1222 1684
1223 child_reap (EV_A_ pid, pid, status); 1685 child_reap (EV_A_ pid, pid, status);
1224 if (EV_PID_HASHSIZE > 1) 1686 if ((EV_PID_HASHSIZE) > 1)
1225 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1687 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1226} 1688}
1227 1689
1228#endif 1690#endif
1229 1691
1230/*****************************************************************************/ 1692/*****************************************************************************/
1231 1693
1694#if EV_USE_IOCP
1695# include "ev_iocp.c"
1696#endif
1232#if EV_USE_PORT 1697#if EV_USE_PORT
1233# include "ev_port.c" 1698# include "ev_port.c"
1234#endif 1699#endif
1235#if EV_USE_KQUEUE 1700#if EV_USE_KQUEUE
1236# include "ev_kqueue.c" 1701# include "ev_kqueue.c"
… …
1243#endif 1708#endif
1244#if EV_USE_SELECT 1709#if EV_USE_SELECT
1245# include "ev_select.c" 1710# include "ev_select.c"
1246#endif 1711#endif
1247 1712
1248int 1713int ecb_cold
1249ev_version_major (void) 1714ev_version_major (void)
1250{ 1715{
1251 return EV_VERSION_MAJOR; 1716 return EV_VERSION_MAJOR;
1252} 1717}
1253 1718
1254int 1719int ecb_cold
1255ev_version_minor (void) 1720ev_version_minor (void)
1256{ 1721{
1257 return EV_VERSION_MINOR; 1722 return EV_VERSION_MINOR;
1258} 1723}
1259 1724
1260/* return true if we are running with elevated privileges and should ignore env variables */ 1725/* return true if we are running with elevated privileges and should ignore env variables */
1261int inline_size 1726int inline_size ecb_cold
1262enable_secure (void) 1727enable_secure (void)
1263{ 1728{
1264#ifdef _WIN32 1729#ifdef _WIN32
1265 return 0; 1730 return 0;
1266#else 1731#else
1267 return getuid () != geteuid () 1732 return getuid () != geteuid ()
1268 || getgid () != getegid (); 1733 || getgid () != getegid ();
1269#endif 1734#endif
1270} 1735}
1271 1736
1272unsigned int 1737unsigned int ecb_cold
1273ev_supported_backends (void) 1738ev_supported_backends (void)
1274{ 1739{
1275 unsigned int flags = 0; 1740 unsigned int flags = 0;
1276 1741
1277 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1742 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1281 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1746 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1282 1747
1283 return flags; 1748 return flags;
1284} 1749}
1285 1750
1286unsigned int 1751unsigned int ecb_cold
1287ev_recommended_backends (void) 1752ev_recommended_backends (void)
1288{ 1753{
1289 unsigned int flags = ev_supported_backends (); 1754 unsigned int flags = ev_supported_backends ();
1290 1755
1291#ifndef __NetBSD__ 1756#ifndef __NetBSD__
… …
1296#ifdef __APPLE__ 1761#ifdef __APPLE__
1297 /* only select works correctly on that "unix-certified" platform */ 1762 /* only select works correctly on that "unix-certified" platform */
1298 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1763 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1299 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1764 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1300#endif 1765#endif
1766#ifdef __FreeBSD__
1767 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1768#endif
1301 1769
1302 return flags; 1770 return flags;
1303} 1771}
1304 1772
1305unsigned int 1773unsigned int ecb_cold
1306ev_embeddable_backends (void) 1774ev_embeddable_backends (void)
1307{ 1775{
1308 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1776 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1309 1777
1310 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1778 /* 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 */ 1779 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1312 flags &= ~EVBACKEND_EPOLL; 1780 flags &= ~EVBACKEND_EPOLL;
1313 1781
1314 return flags; 1782 return flags;
1315} 1783}
1316 1784
1317unsigned int 1785unsigned int
1318ev_backend (EV_P) 1786ev_backend (EV_P)
1319{ 1787{
1320 return backend; 1788 return backend;
1321} 1789}
1322 1790
1791#if EV_FEATURE_API
1323unsigned int 1792unsigned int
1324ev_loop_count (EV_P) 1793ev_iteration (EV_P)
1325{ 1794{
1326 return loop_count; 1795 return loop_count;
1796}
1797
1798unsigned int
1799ev_depth (EV_P)
1800{
1801 return loop_depth;
1327} 1802}
1328 1803
1329void 1804void
1330ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1805ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1331{ 1806{
… …
1336ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1811ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1337{ 1812{
1338 timeout_blocktime = interval; 1813 timeout_blocktime = interval;
1339} 1814}
1340 1815
1816void
1817ev_set_userdata (EV_P_ void *data)
1818{
1819 userdata = data;
1820}
1821
1822void *
1823ev_userdata (EV_P)
1824{
1825 return userdata;
1826}
1827
1828void
1829ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1830{
1831 invoke_cb = invoke_pending_cb;
1832}
1833
1834void
1835ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1836{
1837 release_cb = release;
1838 acquire_cb = acquire;
1839}
1840#endif
1841
1842/* initialise a loop structure, must be zero-initialised */
1341static void noinline 1843static void noinline ecb_cold
1342loop_init (EV_P_ unsigned int flags) 1844loop_init (EV_P_ unsigned int flags)
1343{ 1845{
1344 if (!backend) 1846 if (!backend)
1345 { 1847 {
1848 origflags = flags;
1849
1346#if EV_USE_REALTIME 1850#if EV_USE_REALTIME
1347 if (!have_realtime) 1851 if (!have_realtime)
1348 { 1852 {
1349 struct timespec ts; 1853 struct timespec ts;
1350 1854
… …
1361 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1865 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1362 have_monotonic = 1; 1866 have_monotonic = 1;
1363 } 1867 }
1364#endif 1868#endif
1365 1869
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 */ 1870 /* pid check not overridable via env */
1381#ifndef _WIN32 1871#ifndef _WIN32
1382 if (flags & EVFLAG_FORKCHECK) 1872 if (flags & EVFLAG_FORKCHECK)
1383 curpid = getpid (); 1873 curpid = getpid ();
1384#endif 1874#endif
… …
1386 if (!(flags & EVFLAG_NOENV) 1876 if (!(flags & EVFLAG_NOENV)
1387 && !enable_secure () 1877 && !enable_secure ()
1388 && getenv ("LIBEV_FLAGS")) 1878 && getenv ("LIBEV_FLAGS"))
1389 flags = atoi (getenv ("LIBEV_FLAGS")); 1879 flags = atoi (getenv ("LIBEV_FLAGS"));
1390 1880
1391 if (!(flags & 0x0000ffffU)) 1881 ev_rt_now = ev_time ();
1882 mn_now = get_clock ();
1883 now_floor = mn_now;
1884 rtmn_diff = ev_rt_now - mn_now;
1885#if EV_FEATURE_API
1886 invoke_cb = ev_invoke_pending;
1887#endif
1888
1889 io_blocktime = 0.;
1890 timeout_blocktime = 0.;
1891 backend = 0;
1892 backend_fd = -1;
1893 sig_pending = 0;
1894#if EV_ASYNC_ENABLE
1895 async_pending = 0;
1896#endif
1897 pipe_write_skipped = 0;
1898 pipe_write_wanted = 0;
1899#if EV_USE_INOTIFY
1900 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1901#endif
1902#if EV_USE_SIGNALFD
1903 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1904#endif
1905
1906 if (!(flags & EVBACKEND_MASK))
1392 flags |= ev_recommended_backends (); 1907 flags |= ev_recommended_backends ();
1393 1908
1909#if EV_USE_IOCP
1910 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1911#endif
1394#if EV_USE_PORT 1912#if EV_USE_PORT
1395 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1913 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1396#endif 1914#endif
1397#if EV_USE_KQUEUE 1915#if EV_USE_KQUEUE
1398 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1916 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1405#endif 1923#endif
1406#if EV_USE_SELECT 1924#if EV_USE_SELECT
1407 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1925 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1408#endif 1926#endif
1409 1927
1928 ev_prepare_init (&pending_w, pendingcb);
1929
1930#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1410 ev_init (&pipeev, pipecb); 1931 ev_init (&pipe_w, pipecb);
1411 ev_set_priority (&pipeev, EV_MAXPRI); 1932 ev_set_priority (&pipe_w, EV_MAXPRI);
1933#endif
1412 } 1934 }
1413} 1935}
1414 1936
1415static void noinline 1937/* free up a loop structure */
1938void ecb_cold
1416loop_destroy (EV_P) 1939ev_loop_destroy (EV_P)
1417{ 1940{
1418 int i; 1941 int i;
1419 1942
1943#if EV_MULTIPLICITY
1944 /* mimic free (0) */
1945 if (!EV_A)
1946 return;
1947#endif
1948
1949#if EV_CLEANUP_ENABLE
1950 /* queue cleanup watchers (and execute them) */
1951 if (expect_false (cleanupcnt))
1952 {
1953 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1954 EV_INVOKE_PENDING;
1955 }
1956#endif
1957
1958#if EV_CHILD_ENABLE
1959 if (ev_is_active (&childev))
1960 {
1961 ev_ref (EV_A); /* child watcher */
1962 ev_signal_stop (EV_A_ &childev);
1963 }
1964#endif
1965
1420 if (ev_is_active (&pipeev)) 1966 if (ev_is_active (&pipe_w))
1421 { 1967 {
1422 ev_ref (EV_A); /* signal watcher */ 1968 /*ev_ref (EV_A);*/
1423 ev_io_stop (EV_A_ &pipeev); 1969 /*ev_io_stop (EV_A_ &pipe_w);*/
1424 1970
1425#if EV_USE_EVENTFD 1971#if EV_USE_EVENTFD
1426 if (evfd >= 0) 1972 if (evfd >= 0)
1427 close (evfd); 1973 close (evfd);
1428#endif 1974#endif
1429 1975
1430 if (evpipe [0] >= 0) 1976 if (evpipe [0] >= 0)
1431 { 1977 {
1432 close (evpipe [0]); 1978 EV_WIN32_CLOSE_FD (evpipe [0]);
1433 close (evpipe [1]); 1979 EV_WIN32_CLOSE_FD (evpipe [1]);
1434 } 1980 }
1435 } 1981 }
1982
1983#if EV_USE_SIGNALFD
1984 if (ev_is_active (&sigfd_w))
1985 close (sigfd);
1986#endif
1436 1987
1437#if EV_USE_INOTIFY 1988#if EV_USE_INOTIFY
1438 if (fs_fd >= 0) 1989 if (fs_fd >= 0)
1439 close (fs_fd); 1990 close (fs_fd);
1440#endif 1991#endif
1441 1992
1442 if (backend_fd >= 0) 1993 if (backend_fd >= 0)
1443 close (backend_fd); 1994 close (backend_fd);
1444 1995
1996#if EV_USE_IOCP
1997 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1998#endif
1445#if EV_USE_PORT 1999#if EV_USE_PORT
1446 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2000 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1447#endif 2001#endif
1448#if EV_USE_KQUEUE 2002#if EV_USE_KQUEUE
1449 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2003 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1464#if EV_IDLE_ENABLE 2018#if EV_IDLE_ENABLE
1465 array_free (idle, [i]); 2019 array_free (idle, [i]);
1466#endif 2020#endif
1467 } 2021 }
1468 2022
1469 ev_free (anfds); anfdmax = 0; 2023 ev_free (anfds); anfds = 0; anfdmax = 0;
1470 2024
1471 /* have to use the microsoft-never-gets-it-right macro */ 2025 /* have to use the microsoft-never-gets-it-right macro */
1472 array_free (rfeed, EMPTY); 2026 array_free (rfeed, EMPTY);
1473 array_free (fdchange, EMPTY); 2027 array_free (fdchange, EMPTY);
1474 array_free (timer, EMPTY); 2028 array_free (timer, EMPTY);
… …
1476 array_free (periodic, EMPTY); 2030 array_free (periodic, EMPTY);
1477#endif 2031#endif
1478#if EV_FORK_ENABLE 2032#if EV_FORK_ENABLE
1479 array_free (fork, EMPTY); 2033 array_free (fork, EMPTY);
1480#endif 2034#endif
2035#if EV_CLEANUP_ENABLE
2036 array_free (cleanup, EMPTY);
2037#endif
1481 array_free (prepare, EMPTY); 2038 array_free (prepare, EMPTY);
1482 array_free (check, EMPTY); 2039 array_free (check, EMPTY);
1483#if EV_ASYNC_ENABLE 2040#if EV_ASYNC_ENABLE
1484 array_free (async, EMPTY); 2041 array_free (async, EMPTY);
1485#endif 2042#endif
1486 2043
1487 backend = 0; 2044 backend = 0;
2045
2046#if EV_MULTIPLICITY
2047 if (ev_is_default_loop (EV_A))
2048#endif
2049 ev_default_loop_ptr = 0;
2050#if EV_MULTIPLICITY
2051 else
2052 ev_free (EV_A);
2053#endif
1488} 2054}
1489 2055
1490#if EV_USE_INOTIFY 2056#if EV_USE_INOTIFY
1491inline_size void infy_fork (EV_P); 2057inline_size void infy_fork (EV_P);
1492#endif 2058#endif
… …
1505#endif 2071#endif
1506#if EV_USE_INOTIFY 2072#if EV_USE_INOTIFY
1507 infy_fork (EV_A); 2073 infy_fork (EV_A);
1508#endif 2074#endif
1509 2075
1510 if (ev_is_active (&pipeev)) 2076 if (ev_is_active (&pipe_w))
1511 { 2077 {
1512 /* this "locks" the handlers against writing to the pipe */ 2078 /* 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 2079
1519 ev_ref (EV_A); 2080 ev_ref (EV_A);
1520 ev_io_stop (EV_A_ &pipeev); 2081 ev_io_stop (EV_A_ &pipe_w);
1521 2082
1522#if EV_USE_EVENTFD 2083#if EV_USE_EVENTFD
1523 if (evfd >= 0) 2084 if (evfd >= 0)
1524 close (evfd); 2085 close (evfd);
1525#endif 2086#endif
1526 2087
1527 if (evpipe [0] >= 0) 2088 if (evpipe [0] >= 0)
1528 { 2089 {
1529 close (evpipe [0]); 2090 EV_WIN32_CLOSE_FD (evpipe [0]);
1530 close (evpipe [1]); 2091 EV_WIN32_CLOSE_FD (evpipe [1]);
1531 } 2092 }
1532 2093
2094#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1533 evpipe_init (EV_A); 2095 evpipe_init (EV_A);
1534 /* now iterate over everything, in case we missed something */ 2096 /* now iterate over everything, in case we missed something */
1535 pipecb (EV_A_ &pipeev, EV_READ); 2097 pipecb (EV_A_ &pipe_w, EV_READ);
2098#endif
1536 } 2099 }
1537 2100
1538 postfork = 0; 2101 postfork = 0;
1539} 2102}
1540 2103
1541#if EV_MULTIPLICITY 2104#if EV_MULTIPLICITY
1542 2105
1543struct ev_loop * 2106struct ev_loop * ecb_cold
1544ev_loop_new (unsigned int flags) 2107ev_loop_new (unsigned int flags)
1545{ 2108{
1546 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2109 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1547 2110
1548 memset (loop, 0, sizeof (struct ev_loop)); 2111 memset (EV_A, 0, sizeof (struct ev_loop));
1549
1550 loop_init (EV_A_ flags); 2112 loop_init (EV_A_ flags);
1551 2113
1552 if (ev_backend (EV_A)) 2114 if (ev_backend (EV_A))
1553 return loop; 2115 return EV_A;
1554 2116
2117 ev_free (EV_A);
1555 return 0; 2118 return 0;
1556} 2119}
1557 2120
1558void 2121#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 2122
1571#if EV_VERIFY 2123#if EV_VERIFY
1572static void noinline 2124static void noinline ecb_cold
1573verify_watcher (EV_P_ W w) 2125verify_watcher (EV_P_ W w)
1574{ 2126{
1575 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2127 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1576 2128
1577 if (w->pending) 2129 if (w->pending)
1578 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2130 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1579} 2131}
1580 2132
1581static void noinline 2133static void noinline ecb_cold
1582verify_heap (EV_P_ ANHE *heap, int N) 2134verify_heap (EV_P_ ANHE *heap, int N)
1583{ 2135{
1584 int i; 2136 int i;
1585 2137
1586 for (i = HEAP0; i < N + HEAP0; ++i) 2138 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1591 2143
1592 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2144 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1593 } 2145 }
1594} 2146}
1595 2147
1596static void noinline 2148static void noinline ecb_cold
1597array_verify (EV_P_ W *ws, int cnt) 2149array_verify (EV_P_ W *ws, int cnt)
1598{ 2150{
1599 while (cnt--) 2151 while (cnt--)
1600 { 2152 {
1601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2153 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1602 verify_watcher (EV_A_ ws [cnt]); 2154 verify_watcher (EV_A_ ws [cnt]);
1603 } 2155 }
1604} 2156}
1605#endif 2157#endif
1606 2158
1607void 2159#if EV_FEATURE_API
2160void ecb_cold
1608ev_loop_verify (EV_P) 2161ev_verify (EV_P)
1609{ 2162{
1610#if EV_VERIFY 2163#if EV_VERIFY
1611 int i; 2164 int i;
1612 WL w; 2165 WL w;
1613 2166
… …
1647#if EV_FORK_ENABLE 2200#if EV_FORK_ENABLE
1648 assert (forkmax >= forkcnt); 2201 assert (forkmax >= forkcnt);
1649 array_verify (EV_A_ (W *)forks, forkcnt); 2202 array_verify (EV_A_ (W *)forks, forkcnt);
1650#endif 2203#endif
1651 2204
2205#if EV_CLEANUP_ENABLE
2206 assert (cleanupmax >= cleanupcnt);
2207 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2208#endif
2209
1652#if EV_ASYNC_ENABLE 2210#if EV_ASYNC_ENABLE
1653 assert (asyncmax >= asynccnt); 2211 assert (asyncmax >= asynccnt);
1654 array_verify (EV_A_ (W *)asyncs, asynccnt); 2212 array_verify (EV_A_ (W *)asyncs, asynccnt);
1655#endif 2213#endif
1656 2214
2215#if EV_PREPARE_ENABLE
1657 assert (preparemax >= preparecnt); 2216 assert (preparemax >= preparecnt);
1658 array_verify (EV_A_ (W *)prepares, preparecnt); 2217 array_verify (EV_A_ (W *)prepares, preparecnt);
2218#endif
1659 2219
2220#if EV_CHECK_ENABLE
1660 assert (checkmax >= checkcnt); 2221 assert (checkmax >= checkcnt);
1661 array_verify (EV_A_ (W *)checks, checkcnt); 2222 array_verify (EV_A_ (W *)checks, checkcnt);
2223#endif
1662 2224
1663# if 0 2225# if 0
2226#if EV_CHILD_ENABLE
1664 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2227 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) 2228 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2229#endif
1666# endif 2230# endif
1667#endif 2231#endif
1668} 2232}
1669 2233#endif
1670#endif /* multiplicity */
1671 2234
1672#if EV_MULTIPLICITY 2235#if EV_MULTIPLICITY
1673struct ev_loop * 2236struct ev_loop * ecb_cold
1674ev_default_loop_init (unsigned int flags)
1675#else 2237#else
1676int 2238int
2239#endif
1677ev_default_loop (unsigned int flags) 2240ev_default_loop (unsigned int flags)
1678#endif
1679{ 2241{
1680 if (!ev_default_loop_ptr) 2242 if (!ev_default_loop_ptr)
1681 { 2243 {
1682#if EV_MULTIPLICITY 2244#if EV_MULTIPLICITY
1683 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2245 EV_P = ev_default_loop_ptr = &default_loop_struct;
1684#else 2246#else
1685 ev_default_loop_ptr = 1; 2247 ev_default_loop_ptr = 1;
1686#endif 2248#endif
1687 2249
1688 loop_init (EV_A_ flags); 2250 loop_init (EV_A_ flags);
1689 2251
1690 if (ev_backend (EV_A)) 2252 if (ev_backend (EV_A))
1691 { 2253 {
1692#ifndef _WIN32 2254#if EV_CHILD_ENABLE
1693 ev_signal_init (&childev, childcb, SIGCHLD); 2255 ev_signal_init (&childev, childcb, SIGCHLD);
1694 ev_set_priority (&childev, EV_MAXPRI); 2256 ev_set_priority (&childev, EV_MAXPRI);
1695 ev_signal_start (EV_A_ &childev); 2257 ev_signal_start (EV_A_ &childev);
1696 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2258 ev_unref (EV_A); /* child watcher should not keep loop alive */
1697#endif 2259#endif
… …
1702 2264
1703 return ev_default_loop_ptr; 2265 return ev_default_loop_ptr;
1704} 2266}
1705 2267
1706void 2268void
1707ev_default_destroy (void) 2269ev_loop_fork (EV_P)
1708{ 2270{
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 */ 2271 postfork = 1; /* must be in line with ev_default_fork */
1731} 2272}
1732 2273
1733/*****************************************************************************/ 2274/*****************************************************************************/
1734 2275
1735void 2276void
1736ev_invoke (EV_P_ void *w, int revents) 2277ev_invoke (EV_P_ void *w, int revents)
1737{ 2278{
1738 EV_CB_INVOKE ((W)w, revents); 2279 EV_CB_INVOKE ((W)w, revents);
1739} 2280}
1740 2281
1741inline_speed void 2282unsigned int
1742call_pending (EV_P) 2283ev_pending_count (EV_P)
2284{
2285 int pri;
2286 unsigned int count = 0;
2287
2288 for (pri = NUMPRI; pri--; )
2289 count += pendingcnt [pri];
2290
2291 return count;
2292}
2293
2294void noinline
2295ev_invoke_pending (EV_P)
1743{ 2296{
1744 int pri; 2297 int pri;
1745 2298
1746 for (pri = NUMPRI; pri--; ) 2299 for (pri = NUMPRI; pri--; )
1747 while (pendingcnt [pri]) 2300 while (pendingcnt [pri])
1748 { 2301 {
1749 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2302 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1750 2303
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; 2304 p->w->pending = 0;
1756 EV_CB_INVOKE (p->w, p->events); 2305 EV_CB_INVOKE (p->w, p->events);
1757 EV_FREQUENT_CHECK; 2306 EV_FREQUENT_CHECK;
1758 }
1759 } 2307 }
1760} 2308}
1761 2309
1762#if EV_IDLE_ENABLE 2310#if EV_IDLE_ENABLE
2311/* make idle watchers pending. this handles the "call-idle */
2312/* only when higher priorities are idle" logic */
1763inline_size void 2313inline_size void
1764idle_reify (EV_P) 2314idle_reify (EV_P)
1765{ 2315{
1766 if (expect_false (idleall)) 2316 if (expect_false (idleall))
1767 { 2317 {
… …
1780 } 2330 }
1781 } 2331 }
1782} 2332}
1783#endif 2333#endif
1784 2334
2335/* make timers pending */
1785inline_size void 2336inline_size void
1786timers_reify (EV_P) 2337timers_reify (EV_P)
1787{ 2338{
1788 EV_FREQUENT_CHECK; 2339 EV_FREQUENT_CHECK;
1789 2340
… …
1813 EV_FREQUENT_CHECK; 2364 EV_FREQUENT_CHECK;
1814 feed_reverse (EV_A_ (W)w); 2365 feed_reverse (EV_A_ (W)w);
1815 } 2366 }
1816 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2367 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1817 2368
1818 feed_reverse_done (EV_A_ EV_TIMEOUT); 2369 feed_reverse_done (EV_A_ EV_TIMER);
1819 } 2370 }
1820} 2371}
1821 2372
1822#if EV_PERIODIC_ENABLE 2373#if EV_PERIODIC_ENABLE
2374
2375static void noinline
2376periodic_recalc (EV_P_ ev_periodic *w)
2377{
2378 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2379 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2380
2381 /* the above almost always errs on the low side */
2382 while (at <= ev_rt_now)
2383 {
2384 ev_tstamp nat = at + w->interval;
2385
2386 /* when resolution fails us, we use ev_rt_now */
2387 if (expect_false (nat == at))
2388 {
2389 at = ev_rt_now;
2390 break;
2391 }
2392
2393 at = nat;
2394 }
2395
2396 ev_at (w) = at;
2397}
2398
2399/* make periodics pending */
1823inline_size void 2400inline_size void
1824periodics_reify (EV_P) 2401periodics_reify (EV_P)
1825{ 2402{
1826 EV_FREQUENT_CHECK; 2403 EV_FREQUENT_CHECK;
1827 2404
… …
1845 ANHE_at_cache (periodics [HEAP0]); 2422 ANHE_at_cache (periodics [HEAP0]);
1846 downheap (periodics, periodiccnt, HEAP0); 2423 downheap (periodics, periodiccnt, HEAP0);
1847 } 2424 }
1848 else if (w->interval) 2425 else if (w->interval)
1849 { 2426 {
1850 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2427 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]); 2428 ANHE_at_cache (periodics [HEAP0]);
1865 downheap (periodics, periodiccnt, HEAP0); 2429 downheap (periodics, periodiccnt, HEAP0);
1866 } 2430 }
1867 else 2431 else
1868 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2432 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1874 2438
1875 feed_reverse_done (EV_A_ EV_PERIODIC); 2439 feed_reverse_done (EV_A_ EV_PERIODIC);
1876 } 2440 }
1877} 2441}
1878 2442
2443/* simply recalculate all periodics */
2444/* TODO: maybe ensure that at least one event happens when jumping forward? */
1879static void noinline 2445static void noinline ecb_cold
1880periodics_reschedule (EV_P) 2446periodics_reschedule (EV_P)
1881{ 2447{
1882 int i; 2448 int i;
1883 2449
1884 /* adjust periodics after time jump */ 2450 /* adjust periodics after time jump */
… …
1887 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2453 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1888 2454
1889 if (w->reschedule_cb) 2455 if (w->reschedule_cb)
1890 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2456 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1891 else if (w->interval) 2457 else if (w->interval)
1892 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2458 periodic_recalc (EV_A_ w);
1893 2459
1894 ANHE_at_cache (periodics [i]); 2460 ANHE_at_cache (periodics [i]);
1895 } 2461 }
1896 2462
1897 reheap (periodics, periodiccnt); 2463 reheap (periodics, periodiccnt);
1898} 2464}
1899#endif 2465#endif
1900 2466
2467/* adjust all timers by a given offset */
1901static void noinline 2468static void noinline ecb_cold
1902timers_reschedule (EV_P_ ev_tstamp adjust) 2469timers_reschedule (EV_P_ ev_tstamp adjust)
1903{ 2470{
1904 int i; 2471 int i;
1905 2472
1906 for (i = 0; i < timercnt; ++i) 2473 for (i = 0; i < timercnt; ++i)
… …
1909 ANHE_w (*he)->at += adjust; 2476 ANHE_w (*he)->at += adjust;
1910 ANHE_at_cache (*he); 2477 ANHE_at_cache (*he);
1911 } 2478 }
1912} 2479}
1913 2480
2481/* fetch new monotonic and realtime times from the kernel */
2482/* also detect if there was a timejump, and act accordingly */
1914inline_speed void 2483inline_speed void
1915time_update (EV_P_ ev_tstamp max_block) 2484time_update (EV_P_ ev_tstamp max_block)
1916{ 2485{
1917 int i;
1918
1919#if EV_USE_MONOTONIC 2486#if EV_USE_MONOTONIC
1920 if (expect_true (have_monotonic)) 2487 if (expect_true (have_monotonic))
1921 { 2488 {
2489 int i;
1922 ev_tstamp odiff = rtmn_diff; 2490 ev_tstamp odiff = rtmn_diff;
1923 2491
1924 mn_now = get_clock (); 2492 mn_now = get_clock ();
1925 2493
1926 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2494 /* 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 2510 * doesn't hurt either as we only do this on time-jumps or
1943 * in the unlikely event of having been preempted here. 2511 * in the unlikely event of having been preempted here.
1944 */ 2512 */
1945 for (i = 4; --i; ) 2513 for (i = 4; --i; )
1946 { 2514 {
2515 ev_tstamp diff;
1947 rtmn_diff = ev_rt_now - mn_now; 2516 rtmn_diff = ev_rt_now - mn_now;
1948 2517
2518 diff = odiff - rtmn_diff;
2519
1949 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2520 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1950 return; /* all is well */ 2521 return; /* all is well */
1951 2522
1952 ev_rt_now = ev_time (); 2523 ev_rt_now = ev_time ();
1953 mn_now = get_clock (); 2524 mn_now = get_clock ();
1954 now_floor = mn_now; 2525 now_floor = mn_now;
… …
1976 2547
1977 mn_now = ev_rt_now; 2548 mn_now = ev_rt_now;
1978 } 2549 }
1979} 2550}
1980 2551
1981static int loop_done;
1982
1983void 2552void
1984ev_loop (EV_P_ int flags) 2553ev_run (EV_P_ int flags)
1985{ 2554{
2555#if EV_FEATURE_API
2556 ++loop_depth;
2557#endif
2558
2559 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2560
1986 loop_done = EVUNLOOP_CANCEL; 2561 loop_done = EVBREAK_CANCEL;
1987 2562
1988 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2563 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1989 2564
1990 do 2565 do
1991 { 2566 {
1992#if EV_VERIFY >= 2 2567#if EV_VERIFY >= 2
1993 ev_loop_verify (EV_A); 2568 ev_verify (EV_A);
1994#endif 2569#endif
1995 2570
1996#ifndef _WIN32 2571#ifndef _WIN32
1997 if (expect_false (curpid)) /* penalise the forking check even more */ 2572 if (expect_false (curpid)) /* penalise the forking check even more */
1998 if (expect_false (getpid () != curpid)) 2573 if (expect_false (getpid () != curpid))
… …
2006 /* we might have forked, so queue fork handlers */ 2581 /* we might have forked, so queue fork handlers */
2007 if (expect_false (postfork)) 2582 if (expect_false (postfork))
2008 if (forkcnt) 2583 if (forkcnt)
2009 { 2584 {
2010 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2585 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2011 call_pending (EV_A); 2586 EV_INVOKE_PENDING;
2012 } 2587 }
2013#endif 2588#endif
2014 2589
2590#if EV_PREPARE_ENABLE
2015 /* queue prepare watchers (and execute them) */ 2591 /* queue prepare watchers (and execute them) */
2016 if (expect_false (preparecnt)) 2592 if (expect_false (preparecnt))
2017 { 2593 {
2018 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2594 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2019 call_pending (EV_A); 2595 EV_INVOKE_PENDING;
2020 } 2596 }
2597#endif
2598
2599 if (expect_false (loop_done))
2600 break;
2021 2601
2022 /* we might have forked, so reify kernel state if necessary */ 2602 /* we might have forked, so reify kernel state if necessary */
2023 if (expect_false (postfork)) 2603 if (expect_false (postfork))
2024 loop_fork (EV_A); 2604 loop_fork (EV_A);
2025 2605
… …
2029 /* calculate blocking time */ 2609 /* calculate blocking time */
2030 { 2610 {
2031 ev_tstamp waittime = 0.; 2611 ev_tstamp waittime = 0.;
2032 ev_tstamp sleeptime = 0.; 2612 ev_tstamp sleeptime = 0.;
2033 2613
2614 /* remember old timestamp for io_blocktime calculation */
2615 ev_tstamp prev_mn_now = mn_now;
2616
2617 /* update time to cancel out callback processing overhead */
2618 time_update (EV_A_ 1e100);
2619
2620 /* from now on, we want a pipe-wake-up */
2621 pipe_write_wanted = 1;
2622
2623 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2624
2034 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2625 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2035 { 2626 {
2036 /* update time to cancel out callback processing overhead */ 2627 waittime = MAX_BLOCKTIME;
2037 time_update (EV_A_ 1e100);
2038 2628
2039 if (timercnt) 2629 if (timercnt)
2040 { 2630 {
2041 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2631 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2042 if (waittime > to) waittime = to; 2632 if (waittime > to) waittime = to;
2043 } 2633 }
2044 2634
2045#if EV_PERIODIC_ENABLE 2635#if EV_PERIODIC_ENABLE
2046 if (periodiccnt) 2636 if (periodiccnt)
2047 { 2637 {
2048 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2638 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2049 if (waittime > to) waittime = to; 2639 if (waittime > to) waittime = to;
2050 } 2640 }
2051#endif 2641#endif
2052 2642
2643 /* don't let timeouts decrease the waittime below timeout_blocktime */
2053 if (expect_false (waittime < timeout_blocktime)) 2644 if (expect_false (waittime < timeout_blocktime))
2054 waittime = timeout_blocktime; 2645 waittime = timeout_blocktime;
2055 2646
2056 sleeptime = waittime - backend_fudge; 2647 /* at this point, we NEED to wait, so we have to ensure */
2648 /* to pass a minimum nonzero value to the backend */
2649 if (expect_false (waittime < backend_mintime))
2650 waittime = backend_mintime;
2057 2651
2652 /* extra check because io_blocktime is commonly 0 */
2058 if (expect_true (sleeptime > io_blocktime)) 2653 if (expect_false (io_blocktime))
2059 sleeptime = io_blocktime;
2060
2061 if (sleeptime)
2062 { 2654 {
2655 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2656
2657 if (sleeptime > waittime - backend_mintime)
2658 sleeptime = waittime - backend_mintime;
2659
2660 if (expect_true (sleeptime > 0.))
2661 {
2063 ev_sleep (sleeptime); 2662 ev_sleep (sleeptime);
2064 waittime -= sleeptime; 2663 waittime -= sleeptime;
2664 }
2065 } 2665 }
2066 } 2666 }
2067 2667
2668#if EV_FEATURE_API
2068 ++loop_count; 2669 ++loop_count;
2670#endif
2671 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2069 backend_poll (EV_A_ waittime); 2672 backend_poll (EV_A_ waittime);
2673 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2674
2675 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2676
2677 if (pipe_write_skipped)
2678 {
2679 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2680 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2681 }
2682
2070 2683
2071 /* update ev_rt_now, do magic */ 2684 /* update ev_rt_now, do magic */
2072 time_update (EV_A_ waittime + sleeptime); 2685 time_update (EV_A_ waittime + sleeptime);
2073 } 2686 }
2074 2687
… …
2081#if EV_IDLE_ENABLE 2694#if EV_IDLE_ENABLE
2082 /* queue idle watchers unless other events are pending */ 2695 /* queue idle watchers unless other events are pending */
2083 idle_reify (EV_A); 2696 idle_reify (EV_A);
2084#endif 2697#endif
2085 2698
2699#if EV_CHECK_ENABLE
2086 /* queue check watchers, to be executed first */ 2700 /* queue check watchers, to be executed first */
2087 if (expect_false (checkcnt)) 2701 if (expect_false (checkcnt))
2088 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2702 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2703#endif
2089 2704
2090 call_pending (EV_A); 2705 EV_INVOKE_PENDING;
2091 } 2706 }
2092 while (expect_true ( 2707 while (expect_true (
2093 activecnt 2708 activecnt
2094 && !loop_done 2709 && !loop_done
2095 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2710 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2096 )); 2711 ));
2097 2712
2098 if (loop_done == EVUNLOOP_ONE) 2713 if (loop_done == EVBREAK_ONE)
2099 loop_done = EVUNLOOP_CANCEL; 2714 loop_done = EVBREAK_CANCEL;
2715
2716#if EV_FEATURE_API
2717 --loop_depth;
2718#endif
2100} 2719}
2101 2720
2102void 2721void
2103ev_unloop (EV_P_ int how) 2722ev_break (EV_P_ int how)
2104{ 2723{
2105 loop_done = how; 2724 loop_done = how;
2106} 2725}
2107 2726
2108void 2727void
… …
2133ev_resume (EV_P) 2752ev_resume (EV_P)
2134{ 2753{
2135 ev_tstamp mn_prev = mn_now; 2754 ev_tstamp mn_prev = mn_now;
2136 2755
2137 ev_now_update (EV_A); 2756 ev_now_update (EV_A);
2138 printf ("update %f\n", mn_now - mn_prev);//D
2139 timers_reschedule (EV_A_ mn_now - mn_prev); 2757 timers_reschedule (EV_A_ mn_now - mn_prev);
2758#if EV_PERIODIC_ENABLE
2759 /* TODO: really do this? */
2140 periodics_reschedule (EV_A); 2760 periodics_reschedule (EV_A);
2761#endif
2141} 2762}
2142 2763
2143/*****************************************************************************/ 2764/*****************************************************************************/
2765/* singly-linked list management, used when the expected list length is short */
2144 2766
2145inline_size void 2767inline_size void
2146wlist_add (WL *head, WL elem) 2768wlist_add (WL *head, WL elem)
2147{ 2769{
2148 elem->next = *head; 2770 elem->next = *head;
… …
2152inline_size void 2774inline_size void
2153wlist_del (WL *head, WL elem) 2775wlist_del (WL *head, WL elem)
2154{ 2776{
2155 while (*head) 2777 while (*head)
2156 { 2778 {
2157 if (*head == elem) 2779 if (expect_true (*head == elem))
2158 { 2780 {
2159 *head = elem->next; 2781 *head = elem->next;
2160 return; 2782 break;
2161 } 2783 }
2162 2784
2163 head = &(*head)->next; 2785 head = &(*head)->next;
2164 } 2786 }
2165} 2787}
2166 2788
2789/* internal, faster, version of ev_clear_pending */
2167inline_speed void 2790inline_speed void
2168clear_pending (EV_P_ W w) 2791clear_pending (EV_P_ W w)
2169{ 2792{
2170 if (w->pending) 2793 if (w->pending)
2171 { 2794 {
2172 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2795 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2173 w->pending = 0; 2796 w->pending = 0;
2174 } 2797 }
2175} 2798}
2176 2799
2177int 2800int
… …
2181 int pending = w_->pending; 2804 int pending = w_->pending;
2182 2805
2183 if (expect_true (pending)) 2806 if (expect_true (pending))
2184 { 2807 {
2185 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2808 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2809 p->w = (W)&pending_w;
2186 w_->pending = 0; 2810 w_->pending = 0;
2187 p->w = 0;
2188 return p->events; 2811 return p->events;
2189 } 2812 }
2190 else 2813 else
2191 return 0; 2814 return 0;
2192} 2815}
2193 2816
2194inline_size void 2817inline_size void
2195pri_adjust (EV_P_ W w) 2818pri_adjust (EV_P_ W w)
2196{ 2819{
2197 int pri = w->priority; 2820 int pri = ev_priority (w);
2198 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2821 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2199 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2822 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2200 w->priority = pri; 2823 ev_set_priority (w, pri);
2201} 2824}
2202 2825
2203inline_speed void 2826inline_speed void
2204ev_start (EV_P_ W w, int active) 2827ev_start (EV_P_ W w, int active)
2205{ 2828{
… …
2224 2847
2225 if (expect_false (ev_is_active (w))) 2848 if (expect_false (ev_is_active (w)))
2226 return; 2849 return;
2227 2850
2228 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2851 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)))); 2852 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2230 2853
2231 EV_FREQUENT_CHECK; 2854 EV_FREQUENT_CHECK;
2232 2855
2233 ev_start (EV_A_ (W)w, 1); 2856 ev_start (EV_A_ (W)w, 1);
2234 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2857 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2235 wlist_add (&anfds[fd].head, (WL)w); 2858 wlist_add (&anfds[fd].head, (WL)w);
2236 2859
2237 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 2860 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2238 w->events &= ~EV__IOFDSET; 2861 w->events &= ~EV__IOFDSET;
2239 2862
2240 EV_FREQUENT_CHECK; 2863 EV_FREQUENT_CHECK;
2241} 2864}
2242 2865
… …
2252 EV_FREQUENT_CHECK; 2875 EV_FREQUENT_CHECK;
2253 2876
2254 wlist_del (&anfds[w->fd].head, (WL)w); 2877 wlist_del (&anfds[w->fd].head, (WL)w);
2255 ev_stop (EV_A_ (W)w); 2878 ev_stop (EV_A_ (W)w);
2256 2879
2257 fd_change (EV_A_ w->fd, 1); 2880 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2258 2881
2259 EV_FREQUENT_CHECK; 2882 EV_FREQUENT_CHECK;
2260} 2883}
2261 2884
2262void noinline 2885void noinline
… …
2304 timers [active] = timers [timercnt + HEAP0]; 2927 timers [active] = timers [timercnt + HEAP0];
2305 adjustheap (timers, timercnt, active); 2928 adjustheap (timers, timercnt, active);
2306 } 2929 }
2307 } 2930 }
2308 2931
2309 EV_FREQUENT_CHECK;
2310
2311 ev_at (w) -= mn_now; 2932 ev_at (w) -= mn_now;
2312 2933
2313 ev_stop (EV_A_ (W)w); 2934 ev_stop (EV_A_ (W)w);
2935
2936 EV_FREQUENT_CHECK;
2314} 2937}
2315 2938
2316void noinline 2939void noinline
2317ev_timer_again (EV_P_ ev_timer *w) 2940ev_timer_again (EV_P_ ev_timer *w)
2318{ 2941{
… …
2336 } 2959 }
2337 2960
2338 EV_FREQUENT_CHECK; 2961 EV_FREQUENT_CHECK;
2339} 2962}
2340 2963
2964ev_tstamp
2965ev_timer_remaining (EV_P_ ev_timer *w)
2966{
2967 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2968}
2969
2341#if EV_PERIODIC_ENABLE 2970#if EV_PERIODIC_ENABLE
2342void noinline 2971void noinline
2343ev_periodic_start (EV_P_ ev_periodic *w) 2972ev_periodic_start (EV_P_ ev_periodic *w)
2344{ 2973{
2345 if (expect_false (ev_is_active (w))) 2974 if (expect_false (ev_is_active (w)))
… …
2348 if (w->reschedule_cb) 2977 if (w->reschedule_cb)
2349 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2978 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2350 else if (w->interval) 2979 else if (w->interval)
2351 { 2980 {
2352 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2981 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 */ 2982 periodic_recalc (EV_A_ w);
2354 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2355 } 2983 }
2356 else 2984 else
2357 ev_at (w) = w->offset; 2985 ev_at (w) = w->offset;
2358 2986
2359 EV_FREQUENT_CHECK; 2987 EV_FREQUENT_CHECK;
… …
2391 periodics [active] = periodics [periodiccnt + HEAP0]; 3019 periodics [active] = periodics [periodiccnt + HEAP0];
2392 adjustheap (periodics, periodiccnt, active); 3020 adjustheap (periodics, periodiccnt, active);
2393 } 3021 }
2394 } 3022 }
2395 3023
2396 EV_FREQUENT_CHECK;
2397
2398 ev_stop (EV_A_ (W)w); 3024 ev_stop (EV_A_ (W)w);
3025
3026 EV_FREQUENT_CHECK;
2399} 3027}
2400 3028
2401void noinline 3029void noinline
2402ev_periodic_again (EV_P_ ev_periodic *w) 3030ev_periodic_again (EV_P_ ev_periodic *w)
2403{ 3031{
… …
2409 3037
2410#ifndef SA_RESTART 3038#ifndef SA_RESTART
2411# define SA_RESTART 0 3039# define SA_RESTART 0
2412#endif 3040#endif
2413 3041
3042#if EV_SIGNAL_ENABLE
3043
2414void noinline 3044void noinline
2415ev_signal_start (EV_P_ ev_signal *w) 3045ev_signal_start (EV_P_ ev_signal *w)
2416{ 3046{
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))) 3047 if (expect_false (ev_is_active (w)))
2421 return; 3048 return;
2422 3049
2423 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3050 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2424 3051
2425 evpipe_init (EV_A); 3052#if EV_MULTIPLICITY
3053 assert (("libev: a signal must not be attached to two different loops",
3054 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2426 3055
2427 EV_FREQUENT_CHECK; 3056 signals [w->signum - 1].loop = EV_A;
3057#endif
2428 3058
3059 EV_FREQUENT_CHECK;
3060
3061#if EV_USE_SIGNALFD
3062 if (sigfd == -2)
2429 { 3063 {
2430#ifndef _WIN32 3064 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2431 sigset_t full, prev; 3065 if (sigfd < 0 && errno == EINVAL)
2432 sigfillset (&full); 3066 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2433 sigprocmask (SIG_SETMASK, &full, &prev);
2434#endif
2435 3067
2436 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3068 if (sigfd >= 0)
3069 {
3070 fd_intern (sigfd); /* doing it twice will not hurt */
2437 3071
2438#ifndef _WIN32 3072 sigemptyset (&sigfd_set);
2439 sigprocmask (SIG_SETMASK, &prev, 0); 3073
2440#endif 3074 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3075 ev_set_priority (&sigfd_w, EV_MAXPRI);
3076 ev_io_start (EV_A_ &sigfd_w);
3077 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3078 }
2441 } 3079 }
3080
3081 if (sigfd >= 0)
3082 {
3083 /* TODO: check .head */
3084 sigaddset (&sigfd_set, w->signum);
3085 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3086
3087 signalfd (sigfd, &sigfd_set, 0);
3088 }
3089#endif
2442 3090
2443 ev_start (EV_A_ (W)w, 1); 3091 ev_start (EV_A_ (W)w, 1);
2444 wlist_add (&signals [w->signum - 1].head, (WL)w); 3092 wlist_add (&signals [w->signum - 1].head, (WL)w);
2445 3093
2446 if (!((WL)w)->next) 3094 if (!((WL)w)->next)
3095# if EV_USE_SIGNALFD
3096 if (sigfd < 0) /*TODO*/
3097# endif
2447 { 3098 {
2448#if _WIN32 3099# ifdef _WIN32
3100 evpipe_init (EV_A);
3101
2449 signal (w->signum, ev_sighandler); 3102 signal (w->signum, ev_sighandler);
2450#else 3103# else
2451 struct sigaction sa; 3104 struct sigaction sa;
3105
3106 evpipe_init (EV_A);
3107
2452 sa.sa_handler = ev_sighandler; 3108 sa.sa_handler = ev_sighandler;
2453 sigfillset (&sa.sa_mask); 3109 sigfillset (&sa.sa_mask);
2454 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3110 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2455 sigaction (w->signum, &sa, 0); 3111 sigaction (w->signum, &sa, 0);
3112
3113 if (origflags & EVFLAG_NOSIGMASK)
3114 {
3115 sigemptyset (&sa.sa_mask);
3116 sigaddset (&sa.sa_mask, w->signum);
3117 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3118 }
2456#endif 3119#endif
2457 } 3120 }
2458 3121
2459 EV_FREQUENT_CHECK; 3122 EV_FREQUENT_CHECK;
2460} 3123}
2461 3124
2462void noinline 3125void noinline
… …
2470 3133
2471 wlist_del (&signals [w->signum - 1].head, (WL)w); 3134 wlist_del (&signals [w->signum - 1].head, (WL)w);
2472 ev_stop (EV_A_ (W)w); 3135 ev_stop (EV_A_ (W)w);
2473 3136
2474 if (!signals [w->signum - 1].head) 3137 if (!signals [w->signum - 1].head)
3138 {
3139#if EV_MULTIPLICITY
3140 signals [w->signum - 1].loop = 0; /* unattach from signal */
3141#endif
3142#if EV_USE_SIGNALFD
3143 if (sigfd >= 0)
3144 {
3145 sigset_t ss;
3146
3147 sigemptyset (&ss);
3148 sigaddset (&ss, w->signum);
3149 sigdelset (&sigfd_set, w->signum);
3150
3151 signalfd (sigfd, &sigfd_set, 0);
3152 sigprocmask (SIG_UNBLOCK, &ss, 0);
3153 }
3154 else
3155#endif
2475 signal (w->signum, SIG_DFL); 3156 signal (w->signum, SIG_DFL);
3157 }
2476 3158
2477 EV_FREQUENT_CHECK; 3159 EV_FREQUENT_CHECK;
2478} 3160}
3161
3162#endif
3163
3164#if EV_CHILD_ENABLE
2479 3165
2480void 3166void
2481ev_child_start (EV_P_ ev_child *w) 3167ev_child_start (EV_P_ ev_child *w)
2482{ 3168{
2483#if EV_MULTIPLICITY 3169#if EV_MULTIPLICITY
… …
2487 return; 3173 return;
2488 3174
2489 EV_FREQUENT_CHECK; 3175 EV_FREQUENT_CHECK;
2490 3176
2491 ev_start (EV_A_ (W)w, 1); 3177 ev_start (EV_A_ (W)w, 1);
2492 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3178 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2493 3179
2494 EV_FREQUENT_CHECK; 3180 EV_FREQUENT_CHECK;
2495} 3181}
2496 3182
2497void 3183void
… …
2501 if (expect_false (!ev_is_active (w))) 3187 if (expect_false (!ev_is_active (w)))
2502 return; 3188 return;
2503 3189
2504 EV_FREQUENT_CHECK; 3190 EV_FREQUENT_CHECK;
2505 3191
2506 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3192 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2507 ev_stop (EV_A_ (W)w); 3193 ev_stop (EV_A_ (W)w);
2508 3194
2509 EV_FREQUENT_CHECK; 3195 EV_FREQUENT_CHECK;
2510} 3196}
3197
3198#endif
2511 3199
2512#if EV_STAT_ENABLE 3200#if EV_STAT_ENABLE
2513 3201
2514# ifdef _WIN32 3202# ifdef _WIN32
2515# undef lstat 3203# undef lstat
… …
2521#define MIN_STAT_INTERVAL 0.1074891 3209#define MIN_STAT_INTERVAL 0.1074891
2522 3210
2523static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3211static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2524 3212
2525#if EV_USE_INOTIFY 3213#if EV_USE_INOTIFY
2526# define EV_INOTIFY_BUFSIZE 8192 3214
3215/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3216# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2527 3217
2528static void noinline 3218static void noinline
2529infy_add (EV_P_ ev_stat *w) 3219infy_add (EV_P_ ev_stat *w)
2530{ 3220{
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); 3221 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 3222
2533 if (w->wd < 0) 3223 if (w->wd >= 0)
3224 {
3225 struct statfs sfs;
3226
3227 /* now local changes will be tracked by inotify, but remote changes won't */
3228 /* unless the filesystem is known to be local, we therefore still poll */
3229 /* also do poll on <2.6.25, but with normal frequency */
3230
3231 if (!fs_2625)
3232 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3233 else if (!statfs (w->path, &sfs)
3234 && (sfs.f_type == 0x1373 /* devfs */
3235 || sfs.f_type == 0xEF53 /* ext2/3 */
3236 || sfs.f_type == 0x3153464a /* jfs */
3237 || sfs.f_type == 0x52654973 /* reiser3 */
3238 || sfs.f_type == 0x01021994 /* tempfs */
3239 || sfs.f_type == 0x58465342 /* xfs */))
3240 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3241 else
3242 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2534 { 3243 }
3244 else
3245 {
3246 /* can't use inotify, continue to stat */
2535 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3247 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 3248
2538 /* monitor some parent directory for speedup hints */ 3249 /* 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, */ 3250 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2540 /* but an efficiency issue only */ 3251 /* but an efficiency issue only */
2541 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3252 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2542 { 3253 {
2543 char path [4096]; 3254 char path [4096];
… …
2553 if (!pend || pend == path) 3264 if (!pend || pend == path)
2554 break; 3265 break;
2555 3266
2556 *pend = 0; 3267 *pend = 0;
2557 w->wd = inotify_add_watch (fs_fd, path, mask); 3268 w->wd = inotify_add_watch (fs_fd, path, mask);
2558 } 3269 }
2559 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3270 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2560 } 3271 }
2561 } 3272 }
2562 3273
2563 if (w->wd >= 0) 3274 if (w->wd >= 0)
2564 {
2565 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3275 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2566 3276
2567 /* now local changes will be tracked by inotify, but remote changes won't */ 3277 /* now re-arm timer, if required */
2568 /* unless the filesystem it known to be local, we therefore still poll */ 3278 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); 3279 ev_timer_again (EV_A_ &w->timer);
2583 } 3280 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2584} 3281}
2585 3282
2586static void noinline 3283static void noinline
2587infy_del (EV_P_ ev_stat *w) 3284infy_del (EV_P_ ev_stat *w)
2588{ 3285{
… …
2591 3288
2592 if (wd < 0) 3289 if (wd < 0)
2593 return; 3290 return;
2594 3291
2595 w->wd = -2; 3292 w->wd = -2;
2596 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3293 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2597 wlist_del (&fs_hash [slot].head, (WL)w); 3294 wlist_del (&fs_hash [slot].head, (WL)w);
2598 3295
2599 /* remove this watcher, if others are watching it, they will rearm */ 3296 /* remove this watcher, if others are watching it, they will rearm */
2600 inotify_rm_watch (fs_fd, wd); 3297 inotify_rm_watch (fs_fd, wd);
2601} 3298}
… …
2603static void noinline 3300static void noinline
2604infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3301infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2605{ 3302{
2606 if (slot < 0) 3303 if (slot < 0)
2607 /* overflow, need to check for all hash slots */ 3304 /* overflow, need to check for all hash slots */
2608 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3305 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2609 infy_wd (EV_A_ slot, wd, ev); 3306 infy_wd (EV_A_ slot, wd, ev);
2610 else 3307 else
2611 { 3308 {
2612 WL w_; 3309 WL w_;
2613 3310
2614 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3311 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2615 { 3312 {
2616 ev_stat *w = (ev_stat *)w_; 3313 ev_stat *w = (ev_stat *)w_;
2617 w_ = w_->next; /* lets us remove this watcher and all before it */ 3314 w_ = w_->next; /* lets us remove this watcher and all before it */
2618 3315
2619 if (w->wd == wd || wd == -1) 3316 if (w->wd == wd || wd == -1)
2620 { 3317 {
2621 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3318 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2622 { 3319 {
2623 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3320 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2624 w->wd = -1; 3321 w->wd = -1;
2625 infy_add (EV_A_ w); /* re-add, no matter what */ 3322 infy_add (EV_A_ w); /* re-add, no matter what */
2626 } 3323 }
2627 3324
2628 stat_timer_cb (EV_A_ &w->timer, 0); 3325 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2633 3330
2634static void 3331static void
2635infy_cb (EV_P_ ev_io *w, int revents) 3332infy_cb (EV_P_ ev_io *w, int revents)
2636{ 3333{
2637 char buf [EV_INOTIFY_BUFSIZE]; 3334 char buf [EV_INOTIFY_BUFSIZE];
2638 struct inotify_event *ev = (struct inotify_event *)buf;
2639 int ofs; 3335 int ofs;
2640 int len = read (fs_fd, buf, sizeof (buf)); 3336 int len = read (fs_fd, buf, sizeof (buf));
2641 3337
2642 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3338 for (ofs = 0; ofs < len; )
3339 {
3340 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2643 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3341 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3342 ofs += sizeof (struct inotify_event) + ev->len;
3343 }
2644} 3344}
2645 3345
2646inline_size void 3346inline_size void ecb_cold
2647check_2625 (EV_P) 3347ev_check_2625 (EV_P)
2648{ 3348{
2649 /* kernels < 2.6.25 are borked 3349 /* kernels < 2.6.25 are borked
2650 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3350 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2651 */ 3351 */
2652 struct utsname buf; 3352 if (ev_linux_version () < 0x020619)
2653 int major, minor, micro;
2654
2655 if (uname (&buf))
2656 return; 3353 return;
2657 3354
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; 3355 fs_2625 = 1;
3356}
3357
3358inline_size int
3359infy_newfd (void)
3360{
3361#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3362 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3363 if (fd >= 0)
3364 return fd;
3365#endif
3366 return inotify_init ();
2667} 3367}
2668 3368
2669inline_size void 3369inline_size void
2670infy_init (EV_P) 3370infy_init (EV_P)
2671{ 3371{
2672 if (fs_fd != -2) 3372 if (fs_fd != -2)
2673 return; 3373 return;
2674 3374
2675 fs_fd = -1; 3375 fs_fd = -1;
2676 3376
2677 check_2625 (EV_A); 3377 ev_check_2625 (EV_A);
2678 3378
2679 fs_fd = inotify_init (); 3379 fs_fd = infy_newfd ();
2680 3380
2681 if (fs_fd >= 0) 3381 if (fs_fd >= 0)
2682 { 3382 {
3383 fd_intern (fs_fd);
2683 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3384 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2684 ev_set_priority (&fs_w, EV_MAXPRI); 3385 ev_set_priority (&fs_w, EV_MAXPRI);
2685 ev_io_start (EV_A_ &fs_w); 3386 ev_io_start (EV_A_ &fs_w);
3387 ev_unref (EV_A);
2686 } 3388 }
2687} 3389}
2688 3390
2689inline_size void 3391inline_size void
2690infy_fork (EV_P) 3392infy_fork (EV_P)
… …
2692 int slot; 3394 int slot;
2693 3395
2694 if (fs_fd < 0) 3396 if (fs_fd < 0)
2695 return; 3397 return;
2696 3398
3399 ev_ref (EV_A);
3400 ev_io_stop (EV_A_ &fs_w);
2697 close (fs_fd); 3401 close (fs_fd);
2698 fs_fd = inotify_init (); 3402 fs_fd = infy_newfd ();
2699 3403
3404 if (fs_fd >= 0)
3405 {
3406 fd_intern (fs_fd);
3407 ev_io_set (&fs_w, fs_fd, EV_READ);
3408 ev_io_start (EV_A_ &fs_w);
3409 ev_unref (EV_A);
3410 }
3411
2700 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3412 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2701 { 3413 {
2702 WL w_ = fs_hash [slot].head; 3414 WL w_ = fs_hash [slot].head;
2703 fs_hash [slot].head = 0; 3415 fs_hash [slot].head = 0;
2704 3416
2705 while (w_) 3417 while (w_)
… …
2710 w->wd = -1; 3422 w->wd = -1;
2711 3423
2712 if (fs_fd >= 0) 3424 if (fs_fd >= 0)
2713 infy_add (EV_A_ w); /* re-add, no matter what */ 3425 infy_add (EV_A_ w); /* re-add, no matter what */
2714 else 3426 else
3427 {
3428 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3429 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2715 ev_timer_again (EV_A_ &w->timer); 3430 ev_timer_again (EV_A_ &w->timer);
3431 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3432 }
2716 } 3433 }
2717 } 3434 }
2718} 3435}
2719 3436
2720#endif 3437#endif
… …
2737static void noinline 3454static void noinline
2738stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3455stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2739{ 3456{
2740 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3457 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2741 3458
2742 /* we copy this here each the time so that */ 3459 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); 3460 ev_stat_stat (EV_A_ w);
2746 3461
2747 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3462 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2748 if ( 3463 if (
2749 w->prev.st_dev != w->attr.st_dev 3464 prev.st_dev != w->attr.st_dev
2750 || w->prev.st_ino != w->attr.st_ino 3465 || prev.st_ino != w->attr.st_ino
2751 || w->prev.st_mode != w->attr.st_mode 3466 || prev.st_mode != w->attr.st_mode
2752 || w->prev.st_nlink != w->attr.st_nlink 3467 || prev.st_nlink != w->attr.st_nlink
2753 || w->prev.st_uid != w->attr.st_uid 3468 || prev.st_uid != w->attr.st_uid
2754 || w->prev.st_gid != w->attr.st_gid 3469 || prev.st_gid != w->attr.st_gid
2755 || w->prev.st_rdev != w->attr.st_rdev 3470 || prev.st_rdev != w->attr.st_rdev
2756 || w->prev.st_size != w->attr.st_size 3471 || prev.st_size != w->attr.st_size
2757 || w->prev.st_atime != w->attr.st_atime 3472 || prev.st_atime != w->attr.st_atime
2758 || w->prev.st_mtime != w->attr.st_mtime 3473 || prev.st_mtime != w->attr.st_mtime
2759 || w->prev.st_ctime != w->attr.st_ctime 3474 || prev.st_ctime != w->attr.st_ctime
2760 ) { 3475 ) {
3476 /* we only update w->prev on actual differences */
3477 /* in case we test more often than invoke the callback, */
3478 /* to ensure that prev is always different to attr */
3479 w->prev = prev;
3480
2761 #if EV_USE_INOTIFY 3481 #if EV_USE_INOTIFY
2762 if (fs_fd >= 0) 3482 if (fs_fd >= 0)
2763 { 3483 {
2764 infy_del (EV_A_ w); 3484 infy_del (EV_A_ w);
2765 infy_add (EV_A_ w); 3485 infy_add (EV_A_ w);
… …
2790 3510
2791 if (fs_fd >= 0) 3511 if (fs_fd >= 0)
2792 infy_add (EV_A_ w); 3512 infy_add (EV_A_ w);
2793 else 3513 else
2794#endif 3514#endif
3515 {
2795 ev_timer_again (EV_A_ &w->timer); 3516 ev_timer_again (EV_A_ &w->timer);
3517 ev_unref (EV_A);
3518 }
2796 3519
2797 ev_start (EV_A_ (W)w, 1); 3520 ev_start (EV_A_ (W)w, 1);
2798 3521
2799 EV_FREQUENT_CHECK; 3522 EV_FREQUENT_CHECK;
2800} 3523}
… …
2809 EV_FREQUENT_CHECK; 3532 EV_FREQUENT_CHECK;
2810 3533
2811#if EV_USE_INOTIFY 3534#if EV_USE_INOTIFY
2812 infy_del (EV_A_ w); 3535 infy_del (EV_A_ w);
2813#endif 3536#endif
3537
3538 if (ev_is_active (&w->timer))
3539 {
3540 ev_ref (EV_A);
2814 ev_timer_stop (EV_A_ &w->timer); 3541 ev_timer_stop (EV_A_ &w->timer);
3542 }
2815 3543
2816 ev_stop (EV_A_ (W)w); 3544 ev_stop (EV_A_ (W)w);
2817 3545
2818 EV_FREQUENT_CHECK; 3546 EV_FREQUENT_CHECK;
2819} 3547}
… …
2864 3592
2865 EV_FREQUENT_CHECK; 3593 EV_FREQUENT_CHECK;
2866} 3594}
2867#endif 3595#endif
2868 3596
3597#if EV_PREPARE_ENABLE
2869void 3598void
2870ev_prepare_start (EV_P_ ev_prepare *w) 3599ev_prepare_start (EV_P_ ev_prepare *w)
2871{ 3600{
2872 if (expect_false (ev_is_active (w))) 3601 if (expect_false (ev_is_active (w)))
2873 return; 3602 return;
… …
2899 3628
2900 ev_stop (EV_A_ (W)w); 3629 ev_stop (EV_A_ (W)w);
2901 3630
2902 EV_FREQUENT_CHECK; 3631 EV_FREQUENT_CHECK;
2903} 3632}
3633#endif
2904 3634
3635#if EV_CHECK_ENABLE
2905void 3636void
2906ev_check_start (EV_P_ ev_check *w) 3637ev_check_start (EV_P_ ev_check *w)
2907{ 3638{
2908 if (expect_false (ev_is_active (w))) 3639 if (expect_false (ev_is_active (w)))
2909 return; 3640 return;
… …
2935 3666
2936 ev_stop (EV_A_ (W)w); 3667 ev_stop (EV_A_ (W)w);
2937 3668
2938 EV_FREQUENT_CHECK; 3669 EV_FREQUENT_CHECK;
2939} 3670}
3671#endif
2940 3672
2941#if EV_EMBED_ENABLE 3673#if EV_EMBED_ENABLE
2942void noinline 3674void noinline
2943ev_embed_sweep (EV_P_ ev_embed *w) 3675ev_embed_sweep (EV_P_ ev_embed *w)
2944{ 3676{
2945 ev_loop (w->other, EVLOOP_NONBLOCK); 3677 ev_run (w->other, EVRUN_NOWAIT);
2946} 3678}
2947 3679
2948static void 3680static void
2949embed_io_cb (EV_P_ ev_io *io, int revents) 3681embed_io_cb (EV_P_ ev_io *io, int revents)
2950{ 3682{
2951 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3683 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2952 3684
2953 if (ev_cb (w)) 3685 if (ev_cb (w))
2954 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3686 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2955 else 3687 else
2956 ev_loop (w->other, EVLOOP_NONBLOCK); 3688 ev_run (w->other, EVRUN_NOWAIT);
2957} 3689}
2958 3690
2959static void 3691static void
2960embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3692embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2961{ 3693{
2962 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3694 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2963 3695
2964 { 3696 {
2965 struct ev_loop *loop = w->other; 3697 EV_P = w->other;
2966 3698
2967 while (fdchangecnt) 3699 while (fdchangecnt)
2968 { 3700 {
2969 fd_reify (EV_A); 3701 fd_reify (EV_A);
2970 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3702 ev_run (EV_A_ EVRUN_NOWAIT);
2971 } 3703 }
2972 } 3704 }
2973} 3705}
2974 3706
2975static void 3707static void
… …
2978 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3710 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2979 3711
2980 ev_embed_stop (EV_A_ w); 3712 ev_embed_stop (EV_A_ w);
2981 3713
2982 { 3714 {
2983 struct ev_loop *loop = w->other; 3715 EV_P = w->other;
2984 3716
2985 ev_loop_fork (EV_A); 3717 ev_loop_fork (EV_A);
2986 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3718 ev_run (EV_A_ EVRUN_NOWAIT);
2987 } 3719 }
2988 3720
2989 ev_embed_start (EV_A_ w); 3721 ev_embed_start (EV_A_ w);
2990} 3722}
2991 3723
… …
3002{ 3734{
3003 if (expect_false (ev_is_active (w))) 3735 if (expect_false (ev_is_active (w)))
3004 return; 3736 return;
3005 3737
3006 { 3738 {
3007 struct ev_loop *loop = w->other; 3739 EV_P = w->other;
3008 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3740 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); 3741 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3010 } 3742 }
3011 3743
3012 EV_FREQUENT_CHECK; 3744 EV_FREQUENT_CHECK;
… …
3039 3771
3040 ev_io_stop (EV_A_ &w->io); 3772 ev_io_stop (EV_A_ &w->io);
3041 ev_prepare_stop (EV_A_ &w->prepare); 3773 ev_prepare_stop (EV_A_ &w->prepare);
3042 ev_fork_stop (EV_A_ &w->fork); 3774 ev_fork_stop (EV_A_ &w->fork);
3043 3775
3776 ev_stop (EV_A_ (W)w);
3777
3044 EV_FREQUENT_CHECK; 3778 EV_FREQUENT_CHECK;
3045} 3779}
3046#endif 3780#endif
3047 3781
3048#if EV_FORK_ENABLE 3782#if EV_FORK_ENABLE
… …
3081 3815
3082 EV_FREQUENT_CHECK; 3816 EV_FREQUENT_CHECK;
3083} 3817}
3084#endif 3818#endif
3085 3819
3820#if EV_CLEANUP_ENABLE
3821void
3822ev_cleanup_start (EV_P_ ev_cleanup *w)
3823{
3824 if (expect_false (ev_is_active (w)))
3825 return;
3826
3827 EV_FREQUENT_CHECK;
3828
3829 ev_start (EV_A_ (W)w, ++cleanupcnt);
3830 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3831 cleanups [cleanupcnt - 1] = w;
3832
3833 /* cleanup watchers should never keep a refcount on the loop */
3834 ev_unref (EV_A);
3835 EV_FREQUENT_CHECK;
3836}
3837
3838void
3839ev_cleanup_stop (EV_P_ ev_cleanup *w)
3840{
3841 clear_pending (EV_A_ (W)w);
3842 if (expect_false (!ev_is_active (w)))
3843 return;
3844
3845 EV_FREQUENT_CHECK;
3846 ev_ref (EV_A);
3847
3848 {
3849 int active = ev_active (w);
3850
3851 cleanups [active - 1] = cleanups [--cleanupcnt];
3852 ev_active (cleanups [active - 1]) = active;
3853 }
3854
3855 ev_stop (EV_A_ (W)w);
3856
3857 EV_FREQUENT_CHECK;
3858}
3859#endif
3860
3086#if EV_ASYNC_ENABLE 3861#if EV_ASYNC_ENABLE
3087void 3862void
3088ev_async_start (EV_P_ ev_async *w) 3863ev_async_start (EV_P_ ev_async *w)
3089{ 3864{
3090 if (expect_false (ev_is_active (w))) 3865 if (expect_false (ev_is_active (w)))
3091 return; 3866 return;
3092 3867
3868 w->sent = 0;
3869
3093 evpipe_init (EV_A); 3870 evpipe_init (EV_A);
3094 3871
3095 EV_FREQUENT_CHECK; 3872 EV_FREQUENT_CHECK;
3096 3873
3097 ev_start (EV_A_ (W)w, ++asynccnt); 3874 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3124 3901
3125void 3902void
3126ev_async_send (EV_P_ ev_async *w) 3903ev_async_send (EV_P_ ev_async *w)
3127{ 3904{
3128 w->sent = 1; 3905 w->sent = 1;
3129 evpipe_write (EV_A_ &gotasync); 3906 evpipe_write (EV_A_ &async_pending);
3130} 3907}
3131#endif 3908#endif
3132 3909
3133/*****************************************************************************/ 3910/*****************************************************************************/
3134 3911
… …
3174{ 3951{
3175 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3952 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3176 3953
3177 if (expect_false (!once)) 3954 if (expect_false (!once))
3178 { 3955 {
3179 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3956 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3180 return; 3957 return;
3181 } 3958 }
3182 3959
3183 once->cb = cb; 3960 once->cb = cb;
3184 once->arg = arg; 3961 once->arg = arg;
… …
3198 } 3975 }
3199} 3976}
3200 3977
3201/*****************************************************************************/ 3978/*****************************************************************************/
3202 3979
3203#if 0 3980#if EV_WALK_ENABLE
3204void 3981void ecb_cold
3205ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 3982ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3206{ 3983{
3207 int i, j; 3984 int i, j;
3208 ev_watcher_list *wl, *wn; 3985 ev_watcher_list *wl, *wn;
3209 3986
… …
3224#if EV_USE_INOTIFY 4001#if EV_USE_INOTIFY
3225 if (ev_cb ((ev_io *)wl) == infy_cb) 4002 if (ev_cb ((ev_io *)wl) == infy_cb)
3226 ; 4003 ;
3227 else 4004 else
3228#endif 4005#endif
3229 if ((ev_io *)wl != &pipeev) 4006 if ((ev_io *)wl != &pipe_w)
3230 if (types & EV_IO) 4007 if (types & EV_IO)
3231 cb (EV_A_ EV_IO, wl); 4008 cb (EV_A_ EV_IO, wl);
3232 4009
3233 wl = wn; 4010 wl = wn;
3234 } 4011 }
… …
3253 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4030 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3254#endif 4031#endif
3255 4032
3256#if EV_IDLE_ENABLE 4033#if EV_IDLE_ENABLE
3257 if (types & EV_IDLE) 4034 if (types & EV_IDLE)
3258 for (j = NUMPRI; i--; ) 4035 for (j = NUMPRI; j--; )
3259 for (i = idlecnt [j]; i--; ) 4036 for (i = idlecnt [j]; i--; )
3260 cb (EV_A_ EV_IDLE, idles [j][i]); 4037 cb (EV_A_ EV_IDLE, idles [j][i]);
3261#endif 4038#endif
3262 4039
3263#if EV_FORK_ENABLE 4040#if EV_FORK_ENABLE
… …
3271 if (types & EV_ASYNC) 4048 if (types & EV_ASYNC)
3272 for (i = asynccnt; i--; ) 4049 for (i = asynccnt; i--; )
3273 cb (EV_A_ EV_ASYNC, asyncs [i]); 4050 cb (EV_A_ EV_ASYNC, asyncs [i]);
3274#endif 4051#endif
3275 4052
4053#if EV_PREPARE_ENABLE
3276 if (types & EV_PREPARE) 4054 if (types & EV_PREPARE)
3277 for (i = preparecnt; i--; ) 4055 for (i = preparecnt; i--; )
3278#if EV_EMBED_ENABLE 4056# if EV_EMBED_ENABLE
3279 if (ev_cb (prepares [i]) != embed_prepare_cb) 4057 if (ev_cb (prepares [i]) != embed_prepare_cb)
3280#endif 4058# endif
3281 cb (EV_A_ EV_PREPARE, prepares [i]); 4059 cb (EV_A_ EV_PREPARE, prepares [i]);
4060#endif
3282 4061
4062#if EV_CHECK_ENABLE
3283 if (types & EV_CHECK) 4063 if (types & EV_CHECK)
3284 for (i = checkcnt; i--; ) 4064 for (i = checkcnt; i--; )
3285 cb (EV_A_ EV_CHECK, checks [i]); 4065 cb (EV_A_ EV_CHECK, checks [i]);
4066#endif
3286 4067
4068#if EV_SIGNAL_ENABLE
3287 if (types & EV_SIGNAL) 4069 if (types & EV_SIGNAL)
3288 for (i = 0; i < signalmax; ++i) 4070 for (i = 0; i < EV_NSIG - 1; ++i)
3289 for (wl = signals [i].head; wl; ) 4071 for (wl = signals [i].head; wl; )
3290 { 4072 {
3291 wn = wl->next; 4073 wn = wl->next;
3292 cb (EV_A_ EV_SIGNAL, wl); 4074 cb (EV_A_ EV_SIGNAL, wl);
3293 wl = wn; 4075 wl = wn;
3294 } 4076 }
4077#endif
3295 4078
4079#if EV_CHILD_ENABLE
3296 if (types & EV_CHILD) 4080 if (types & EV_CHILD)
3297 for (i = EV_PID_HASHSIZE; i--; ) 4081 for (i = (EV_PID_HASHSIZE); i--; )
3298 for (wl = childs [i]; wl; ) 4082 for (wl = childs [i]; wl; )
3299 { 4083 {
3300 wn = wl->next; 4084 wn = wl->next;
3301 cb (EV_A_ EV_CHILD, wl); 4085 cb (EV_A_ EV_CHILD, wl);
3302 wl = wn; 4086 wl = wn;
3303 } 4087 }
4088#endif
3304/* EV_STAT 0x00001000 /* stat data changed */ 4089/* EV_STAT 0x00001000 /* stat data changed */
3305/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4090/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3306} 4091}
3307#endif 4092#endif
3308 4093
3309#if EV_MULTIPLICITY 4094#if EV_MULTIPLICITY
3310 #include "ev_wrap.h" 4095 #include "ev_wrap.h"
3311#endif 4096#endif
3312 4097
3313#ifdef __cplusplus 4098EV_CPP(})
3314}
3315#endif
3316 4099

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