ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.285 by root, Wed Apr 15 19:35:53 2009 UTC vs.
Revision 1.399 by root, Mon Sep 26 12:32:21 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
… …
172# define WIN32_LEAN_AND_MEAN 194# define WIN32_LEAN_AND_MEAN
173# include <windows.h> 195# include <windows.h>
174# ifndef EV_SELECT_IS_WINSOCKET 196# ifndef EV_SELECT_IS_WINSOCKET
175# define EV_SELECT_IS_WINSOCKET 1 197# define EV_SELECT_IS_WINSOCKET 1
176# endif 198# endif
199# undef EV_AVOID_STDIO
177#endif 200#endif
201
202/* OS X, in its infinite idiocy, actually HARDCODES
203 * a limit of 1024 into their select. Where people have brains,
204 * OS X engineers apparently have a vacuum. Or maybe they were
205 * ordered to have a vacuum, or they do anything for money.
206 * This might help. Or not.
207 */
208#define _DARWIN_UNLIMITED_SELECT 1
178 209
179/* this block tries to deduce configuration from header-defined symbols and defaults */ 210/* this block tries to deduce configuration from header-defined symbols and defaults */
211
212/* try to deduce the maximum number of signals on this platform */
213#if defined (EV_NSIG)
214/* use what's provided */
215#elif defined (NSIG)
216# define EV_NSIG (NSIG)
217#elif defined(_NSIG)
218# define EV_NSIG (_NSIG)
219#elif defined (SIGMAX)
220# define EV_NSIG (SIGMAX+1)
221#elif defined (SIG_MAX)
222# define EV_NSIG (SIG_MAX+1)
223#elif defined (_SIG_MAX)
224# define EV_NSIG (_SIG_MAX+1)
225#elif defined (MAXSIG)
226# define EV_NSIG (MAXSIG+1)
227#elif defined (MAX_SIG)
228# define EV_NSIG (MAX_SIG+1)
229#elif defined (SIGARRAYSIZE)
230# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
231#elif defined (_sys_nsig)
232# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
233#else
234# error "unable to find value for NSIG, please report"
235/* to make it compile regardless, just remove the above line, */
236/* but consider reporting it, too! :) */
237# define EV_NSIG 65
238#endif
239
240#ifndef EV_USE_FLOOR
241# define EV_USE_FLOOR 0
242#endif
180 243
181#ifndef EV_USE_CLOCK_SYSCALL 244#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2 245# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1 246# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
184# else 247# else
185# define EV_USE_CLOCK_SYSCALL 0 248# define EV_USE_CLOCK_SYSCALL 0
186# endif 249# endif
187#endif 250#endif
188 251
189#ifndef EV_USE_MONOTONIC 252#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 253# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1 254# define EV_USE_MONOTONIC EV_FEATURE_OS
192# else 255# else
193# define EV_USE_MONOTONIC 0 256# define EV_USE_MONOTONIC 0
194# endif 257# endif
195#endif 258#endif
196 259
… …
198# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 261# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
199#endif 262#endif
200 263
201#ifndef EV_USE_NANOSLEEP 264#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L 265# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1 266# define EV_USE_NANOSLEEP EV_FEATURE_OS
204# else 267# else
205# define EV_USE_NANOSLEEP 0 268# define EV_USE_NANOSLEEP 0
206# endif 269# endif
207#endif 270#endif
208 271
209#ifndef EV_USE_SELECT 272#ifndef EV_USE_SELECT
210# define EV_USE_SELECT 1 273# define EV_USE_SELECT EV_FEATURE_BACKENDS
211#endif 274#endif
212 275
213#ifndef EV_USE_POLL 276#ifndef EV_USE_POLL
214# ifdef _WIN32 277# ifdef _WIN32
215# define EV_USE_POLL 0 278# define EV_USE_POLL 0
216# else 279# else
217# define EV_USE_POLL 1 280# define EV_USE_POLL EV_FEATURE_BACKENDS
218# endif 281# endif
219#endif 282#endif
220 283
221#ifndef EV_USE_EPOLL 284#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 285# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1 286# define EV_USE_EPOLL EV_FEATURE_BACKENDS
224# else 287# else
225# define EV_USE_EPOLL 0 288# define EV_USE_EPOLL 0
226# endif 289# endif
227#endif 290#endif
228 291
… …
234# define EV_USE_PORT 0 297# define EV_USE_PORT 0
235#endif 298#endif
236 299
237#ifndef EV_USE_INOTIFY 300#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 301# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1 302# define EV_USE_INOTIFY EV_FEATURE_OS
240# else 303# else
241# define EV_USE_INOTIFY 0 304# define EV_USE_INOTIFY 0
242# endif 305# endif
243#endif 306#endif
244 307
245#ifndef EV_PID_HASHSIZE 308#ifndef EV_PID_HASHSIZE
246# if EV_MINIMAL 309# 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 310#endif
252 311
253#ifndef EV_INOTIFY_HASHSIZE 312#ifndef EV_INOTIFY_HASHSIZE
254# if EV_MINIMAL 313# 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 314#endif
260 315
261#ifndef EV_USE_EVENTFD 316#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 317# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1 318# define EV_USE_EVENTFD EV_FEATURE_OS
264# else 319# else
265# define EV_USE_EVENTFD 0 320# define EV_USE_EVENTFD 0
321# endif
322#endif
323
324#ifndef EV_USE_SIGNALFD
325# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
326# define EV_USE_SIGNALFD EV_FEATURE_OS
327# else
328# define EV_USE_SIGNALFD 0
266# endif 329# endif
267#endif 330#endif
268 331
269#if 0 /* debugging */ 332#if 0 /* debugging */
270# define EV_VERIFY 3 333# define EV_VERIFY 3
271# define EV_USE_4HEAP 1 334# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1 335# define EV_HEAP_CACHE_AT 1
273#endif 336#endif
274 337
275#ifndef EV_VERIFY 338#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL 339# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
277#endif 340#endif
278 341
279#ifndef EV_USE_4HEAP 342#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL 343# define EV_USE_4HEAP EV_FEATURE_DATA
281#endif 344#endif
282 345
283#ifndef EV_HEAP_CACHE_AT 346#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL 347# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
348#endif
349
350/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
351/* which makes programs even slower. might work on other unices, too. */
352#if EV_USE_CLOCK_SYSCALL
353# include <syscall.h>
354# ifdef SYS_clock_gettime
355# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
356# undef EV_USE_MONOTONIC
357# define EV_USE_MONOTONIC 1
358# else
359# undef EV_USE_CLOCK_SYSCALL
360# define EV_USE_CLOCK_SYSCALL 0
361# endif
285#endif 362#endif
286 363
287/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 364/* this block fixes any misconfiguration where we know we run into trouble otherwise */
365
366#ifdef _AIX
367/* AIX has a completely broken poll.h header */
368# undef EV_USE_POLL
369# define EV_USE_POLL 0
370#endif
288 371
289#ifndef CLOCK_MONOTONIC 372#ifndef CLOCK_MONOTONIC
290# undef EV_USE_MONOTONIC 373# undef EV_USE_MONOTONIC
291# define EV_USE_MONOTONIC 0 374# define EV_USE_MONOTONIC 0
292#endif 375#endif
… …
300# undef EV_USE_INOTIFY 383# undef EV_USE_INOTIFY
301# define EV_USE_INOTIFY 0 384# define EV_USE_INOTIFY 0
302#endif 385#endif
303 386
304#if !EV_USE_NANOSLEEP 387#if !EV_USE_NANOSLEEP
305# ifndef _WIN32 388/* hp-ux has it in sys/time.h, which we unconditionally include above */
389# if !defined(_WIN32) && !defined(__hpux)
306# include <sys/select.h> 390# include <sys/select.h>
307# endif 391# endif
308#endif 392#endif
309 393
310#if EV_USE_INOTIFY 394#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h> 395# include <sys/statfs.h>
313# include <sys/inotify.h> 396# include <sys/inotify.h>
314/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 397/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
315# ifndef IN_DONT_FOLLOW 398# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY 399# undef EV_USE_INOTIFY
… …
320 403
321#if EV_SELECT_IS_WINSOCKET 404#if EV_SELECT_IS_WINSOCKET
322# include <winsock.h> 405# include <winsock.h>
323#endif 406#endif
324 407
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 408#if EV_USE_EVENTFD
335/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 409/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336# include <stdint.h> 410# include <stdint.h>
337# ifdef __cplusplus 411# ifndef EFD_NONBLOCK
338extern "C" { 412# define EFD_NONBLOCK O_NONBLOCK
339# endif 413# endif
340int eventfd (unsigned int initval, int flags); 414# ifndef EFD_CLOEXEC
341# ifdef __cplusplus 415# ifdef O_CLOEXEC
342} 416# define EFD_CLOEXEC O_CLOEXEC
417# else
418# define EFD_CLOEXEC 02000000
419# endif
343# endif 420# endif
421EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
422#endif
423
424#if EV_USE_SIGNALFD
425/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
426# include <stdint.h>
427# ifndef SFD_NONBLOCK
428# define SFD_NONBLOCK O_NONBLOCK
429# endif
430# ifndef SFD_CLOEXEC
431# ifdef O_CLOEXEC
432# define SFD_CLOEXEC O_CLOEXEC
433# else
434# define SFD_CLOEXEC 02000000
435# endif
436# endif
437EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
438
439struct signalfd_siginfo
440{
441 uint32_t ssi_signo;
442 char pad[128 - sizeof (uint32_t)];
443};
344#endif 444#endif
345 445
346/**/ 446/**/
347 447
348#if EV_VERIFY >= 3 448#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 449# define EV_FREQUENT_CHECK ev_verify (EV_A)
350#else 450#else
351# define EV_FREQUENT_CHECK do { } while (0) 451# define EV_FREQUENT_CHECK do { } while (0)
352#endif 452#endif
353 453
354/* 454/*
355 * This is used to avoid floating point rounding problems. 455 * 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. 456 * This value is good at least till the year 4000.
360 * Better solutions welcome.
361 */ 457 */
362#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 458#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
459/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
363 460
364#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 461#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) */ 462#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 */
367 463
464#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
465#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
466
467/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
468/* ECB.H BEGIN */
469/*
470 * libecb - http://software.schmorp.de/pkg/libecb
471 *
472 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de>
473 * Copyright (©) 2011 Emanuele Giaquinta
474 * All rights reserved.
475 *
476 * Redistribution and use in source and binary forms, with or without modifica-
477 * tion, are permitted provided that the following conditions are met:
478 *
479 * 1. Redistributions of source code must retain the above copyright notice,
480 * this list of conditions and the following disclaimer.
481 *
482 * 2. Redistributions in binary form must reproduce the above copyright
483 * notice, this list of conditions and the following disclaimer in the
484 * documentation and/or other materials provided with the distribution.
485 *
486 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
487 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
488 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
489 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
490 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
491 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
492 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
493 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
494 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
495 * OF THE POSSIBILITY OF SUCH DAMAGE.
496 */
497
498#ifndef ECB_H
499#define ECB_H
500
501#ifdef _WIN32
502 typedef signed char int8_t;
503 typedef unsigned char uint8_t;
504 typedef signed short int16_t;
505 typedef unsigned short uint16_t;
506 typedef signed int int32_t;
507 typedef unsigned int uint32_t;
368#if __GNUC__ >= 4 508 #if __GNUC__
369# define expect(expr,value) __builtin_expect ((expr),(value)) 509 typedef signed long long int64_t;
370# define noinline __attribute__ ((noinline)) 510 typedef unsigned long long uint64_t;
511 #else /* _MSC_VER || __BORLANDC__ */
512 typedef signed __int64 int64_t;
513 typedef unsigned __int64 uint64_t;
514 #endif
371#else 515#else
372# define expect(expr,value) (expr) 516 #include <inttypes.h>
373# define noinline
374# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
375# define inline
376# endif 517#endif
518
519/* many compilers define _GNUC_ to some versions but then only implement
520 * what their idiot authors think are the "more important" extensions,
521 * causing enormous grief in return for some better fake benchmark numbers.
522 * or so.
523 * we try to detect these and simply assume they are not gcc - if they have
524 * an issue with that they should have done it right in the first place.
525 */
526#ifndef ECB_GCC_VERSION
527 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
528 #define ECB_GCC_VERSION(major,minor) 0
529 #else
530 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
377#endif 531 #endif
532#endif
378 533
534/*****************************************************************************/
535
536/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
537/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
538
539#if ECB_NO_THREADS || ECB_NO_SMP
540 #define ECB_MEMORY_FENCE do { } while (0)
541#endif
542
543#ifndef ECB_MEMORY_FENCE
544 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__)
545 #if __i386__
546 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
547 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
548 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
549 #elif __amd64
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
553 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
555 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \
556 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__)
557 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
558 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \
559 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ )
560 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
561 #endif
562 #endif
563#endif
564
565#ifndef ECB_MEMORY_FENCE
566 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
567 #define ECB_MEMORY_FENCE __sync_synchronize ()
568 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
569 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
570 #elif _MSC_VER >= 1400 /* VC++ 2005 */
571 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
572 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
573 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
574 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
575 #elif defined(_WIN32)
576 #include <WinNT.h>
577 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
578 #endif
579#endif
580
581#ifndef ECB_MEMORY_FENCE
582 #if !ECB_AVOID_PTHREADS
583 /*
584 * if you get undefined symbol references to pthread_mutex_lock,
585 * or failure to find pthread.h, then you should implement
586 * the ECB_MEMORY_FENCE operations for your cpu/compiler
587 * OR provide pthread.h and link against the posix thread library
588 * of your system.
589 */
590 #include <pthread.h>
591 #define ECB_NEEDS_PTHREADS 1
592 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
593
594 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
595 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
596 #endif
597#endif
598
599#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
600 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
601#endif
602
603#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
604 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
605#endif
606
607/*****************************************************************************/
608
609#define ECB_C99 (__STDC_VERSION__ >= 199901L)
610
611#if __cplusplus
612 #define ecb_inline static inline
613#elif ECB_GCC_VERSION(2,5)
614 #define ecb_inline static __inline__
615#elif ECB_C99
616 #define ecb_inline static inline
617#else
618 #define ecb_inline static
619#endif
620
621#if ECB_GCC_VERSION(3,3)
622 #define ecb_restrict __restrict__
623#elif ECB_C99
624 #define ecb_restrict restrict
625#else
626 #define ecb_restrict
627#endif
628
629typedef int ecb_bool;
630
631#define ECB_CONCAT_(a, b) a ## b
632#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
633#define ECB_STRINGIFY_(a) # a
634#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
635
636#define ecb_function_ ecb_inline
637
638#if ECB_GCC_VERSION(3,1)
639 #define ecb_attribute(attrlist) __attribute__(attrlist)
640 #define ecb_is_constant(expr) __builtin_constant_p (expr)
641 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
642 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
643#else
644 #define ecb_attribute(attrlist)
645 #define ecb_is_constant(expr) 0
646 #define ecb_expect(expr,value) (expr)
647 #define ecb_prefetch(addr,rw,locality)
648#endif
649
650/* no emulation for ecb_decltype */
651#if ECB_GCC_VERSION(4,5)
652 #define ecb_decltype(x) __decltype(x)
653#elif ECB_GCC_VERSION(3,0)
654 #define ecb_decltype(x) __typeof(x)
655#endif
656
657#define ecb_noinline ecb_attribute ((__noinline__))
658#define ecb_noreturn ecb_attribute ((__noreturn__))
659#define ecb_unused ecb_attribute ((__unused__))
660#define ecb_const ecb_attribute ((__const__))
661#define ecb_pure ecb_attribute ((__pure__))
662
663#if ECB_GCC_VERSION(4,3)
664 #define ecb_artificial ecb_attribute ((__artificial__))
665 #define ecb_hot ecb_attribute ((__hot__))
666 #define ecb_cold ecb_attribute ((__cold__))
667#else
668 #define ecb_artificial
669 #define ecb_hot
670 #define ecb_cold
671#endif
672
673/* put around conditional expressions if you are very sure that the */
674/* expression is mostly true or mostly false. note that these return */
675/* booleans, not the expression. */
379#define expect_false(expr) expect ((expr) != 0, 0) 676#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
380#define expect_true(expr) expect ((expr) != 0, 1) 677#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
678/* for compatibility to the rest of the world */
679#define ecb_likely(expr) ecb_expect_true (expr)
680#define ecb_unlikely(expr) ecb_expect_false (expr)
681
682/* count trailing zero bits and count # of one bits */
683#if ECB_GCC_VERSION(3,4)
684 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
685 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
686 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
687 #define ecb_ctz32(x) __builtin_ctz (x)
688 #define ecb_ctz64(x) __builtin_ctzll (x)
689 #define ecb_popcount32(x) __builtin_popcount (x)
690 /* no popcountll */
691#else
692 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
693 ecb_function_ int
694 ecb_ctz32 (uint32_t x)
695 {
696 int r = 0;
697
698 x &= ~x + 1; /* this isolates the lowest bit */
699
700#if ECB_branchless_on_i386
701 r += !!(x & 0xaaaaaaaa) << 0;
702 r += !!(x & 0xcccccccc) << 1;
703 r += !!(x & 0xf0f0f0f0) << 2;
704 r += !!(x & 0xff00ff00) << 3;
705 r += !!(x & 0xffff0000) << 4;
706#else
707 if (x & 0xaaaaaaaa) r += 1;
708 if (x & 0xcccccccc) r += 2;
709 if (x & 0xf0f0f0f0) r += 4;
710 if (x & 0xff00ff00) r += 8;
711 if (x & 0xffff0000) r += 16;
712#endif
713
714 return r;
715 }
716
717 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
718 ecb_function_ int
719 ecb_ctz64 (uint64_t x)
720 {
721 int shift = x & 0xffffffffU ? 0 : 32;
722 return ecb_ctz32 (x >> shift) + shift;
723 }
724
725 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
726 ecb_function_ int
727 ecb_popcount32 (uint32_t x)
728 {
729 x -= (x >> 1) & 0x55555555;
730 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
731 x = ((x >> 4) + x) & 0x0f0f0f0f;
732 x *= 0x01010101;
733
734 return x >> 24;
735 }
736
737 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
738 ecb_function_ int ecb_ld32 (uint32_t x)
739 {
740 int r = 0;
741
742 if (x >> 16) { x >>= 16; r += 16; }
743 if (x >> 8) { x >>= 8; r += 8; }
744 if (x >> 4) { x >>= 4; r += 4; }
745 if (x >> 2) { x >>= 2; r += 2; }
746 if (x >> 1) { r += 1; }
747
748 return r;
749 }
750
751 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
752 ecb_function_ int ecb_ld64 (uint64_t x)
753 {
754 int r = 0;
755
756 if (x >> 32) { x >>= 32; r += 32; }
757
758 return r + ecb_ld32 (x);
759 }
760#endif
761
762/* popcount64 is only available on 64 bit cpus as gcc builtin */
763/* so for this version we are lazy */
764ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
765ecb_function_ int
766ecb_popcount64 (uint64_t x)
767{
768 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
769}
770
771ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
772ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
773ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
774ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
775ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
776ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
777ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
778ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
779
780ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
781ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
782ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
783ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
784ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
785ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
786ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
787ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
788
789#if ECB_GCC_VERSION(4,3)
790 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
791 #define ecb_bswap32(x) __builtin_bswap32 (x)
792 #define ecb_bswap64(x) __builtin_bswap64 (x)
793#else
794 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
795 ecb_function_ uint16_t
796 ecb_bswap16 (uint16_t x)
797 {
798 return ecb_rotl16 (x, 8);
799 }
800
801 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
802 ecb_function_ uint32_t
803 ecb_bswap32 (uint32_t x)
804 {
805 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
806 }
807
808 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
809 ecb_function_ uint64_t
810 ecb_bswap64 (uint64_t x)
811 {
812 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
813 }
814#endif
815
816#if ECB_GCC_VERSION(4,5)
817 #define ecb_unreachable() __builtin_unreachable ()
818#else
819 /* this seems to work fine, but gcc always emits a warning for it :/ */
820 ecb_function_ void ecb_unreachable (void) ecb_noreturn;
821 ecb_function_ void ecb_unreachable (void) { }
822#endif
823
824/* try to tell the compiler that some condition is definitely true */
825#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
826
827ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
828ecb_function_ unsigned char
829ecb_byteorder_helper (void)
830{
831 const uint32_t u = 0x11223344;
832 return *(unsigned char *)&u;
833}
834
835ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
836ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
837ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
838ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
839
840#if ECB_GCC_VERSION(3,0) || ECB_C99
841 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
842#else
843 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
844#endif
845
846#if __cplusplus
847 template<typename T>
848 static inline T ecb_div_rd (T val, T div)
849 {
850 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
851 }
852 template<typename T>
853 static inline T ecb_div_ru (T val, T div)
854 {
855 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
856 }
857#else
858 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
859 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
860#endif
861
862#if ecb_cplusplus_does_not_suck
863 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
864 template<typename T, int N>
865 static inline int ecb_array_length (const T (&arr)[N])
866 {
867 return N;
868 }
869#else
870 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
871#endif
872
873#endif
874
875/* ECB.H END */
876
877#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
878/* if your architecture doesn't need memory fences, e.g. because it is
879 * single-cpu/core, or if you use libev in a project that doesn't use libev
880 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
881 * libev, in which casess the memory fences become nops.
882 * alternatively, you can remove this #error and link against libpthread,
883 * which will then provide the memory fences.
884 */
885# error "memory fences not defined for your architecture, please report"
886#endif
887
888#ifndef ECB_MEMORY_FENCE
889# define ECB_MEMORY_FENCE do { } while (0)
890# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
891# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
892#endif
893
894#define expect_false(cond) ecb_expect_false (cond)
895#define expect_true(cond) ecb_expect_true (cond)
896#define noinline ecb_noinline
897
381#define inline_size static inline 898#define inline_size ecb_inline
382 899
383#if EV_MINIMAL 900#if EV_FEATURE_CODE
901# define inline_speed ecb_inline
902#else
384# define inline_speed static noinline 903# define inline_speed static noinline
904#endif
905
906#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
907
908#if EV_MINPRI == EV_MAXPRI
909# define ABSPRI(w) (((W)w), 0)
385#else 910#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) 911# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
912#endif
391 913
392#define EMPTY /* required for microsofts broken pseudo-c compiler */ 914#define EMPTY /* required for microsofts broken pseudo-c compiler */
393#define EMPTY2(a,b) /* used to suppress some warnings */ 915#define EMPTY2(a,b) /* used to suppress some warnings */
394 916
395typedef ev_watcher *W; 917typedef ev_watcher *W;
… …
399#define ev_active(w) ((W)(w))->active 921#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at 922#define ev_at(w) ((WT)(w))->at
401 923
402#if EV_USE_REALTIME 924#if EV_USE_REALTIME
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 925/* 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 */ 926/* giving it a reasonably high chance of working on typical architectures */
405static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 927static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
406#endif 928#endif
407 929
408#if EV_USE_MONOTONIC 930#if EV_USE_MONOTONIC
409static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 931static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410#endif 932#endif
411 933
934#ifndef EV_FD_TO_WIN32_HANDLE
935# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
936#endif
937#ifndef EV_WIN32_HANDLE_TO_FD
938# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
939#endif
940#ifndef EV_WIN32_CLOSE_FD
941# define EV_WIN32_CLOSE_FD(fd) close (fd)
942#endif
943
412#ifdef _WIN32 944#ifdef _WIN32
413# include "ev_win32.c" 945# include "ev_win32.c"
414#endif 946#endif
415 947
416/*****************************************************************************/ 948/*****************************************************************************/
417 949
950/* define a suitable floor function (only used by periodics atm) */
951
952#if EV_USE_FLOOR
953# include <math.h>
954# define ev_floor(v) floor (v)
955#else
956
957#include <float.h>
958
959/* a floor() replacement function, should be independent of ev_tstamp type */
960static ev_tstamp noinline
961ev_floor (ev_tstamp v)
962{
963 /* the choice of shift factor is not terribly important */
964#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
965 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
966#else
967 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
968#endif
969
970 /* argument too large for an unsigned long? */
971 if (expect_false (v >= shift))
972 {
973 ev_tstamp f;
974
975 if (v == v - 1.)
976 return v; /* very large number */
977
978 f = shift * ev_floor (v * (1. / shift));
979 return f + ev_floor (v - f);
980 }
981
982 /* special treatment for negative args? */
983 if (expect_false (v < 0.))
984 {
985 ev_tstamp f = -ev_floor (-v);
986
987 return f - (f == v ? 0 : 1);
988 }
989
990 /* fits into an unsigned long */
991 return (unsigned long)v;
992}
993
994#endif
995
996/*****************************************************************************/
997
998#ifdef __linux
999# include <sys/utsname.h>
1000#endif
1001
1002static unsigned int noinline ecb_cold
1003ev_linux_version (void)
1004{
1005#ifdef __linux
1006 unsigned int v = 0;
1007 struct utsname buf;
1008 int i;
1009 char *p = buf.release;
1010
1011 if (uname (&buf))
1012 return 0;
1013
1014 for (i = 3+1; --i; )
1015 {
1016 unsigned int c = 0;
1017
1018 for (;;)
1019 {
1020 if (*p >= '0' && *p <= '9')
1021 c = c * 10 + *p++ - '0';
1022 else
1023 {
1024 p += *p == '.';
1025 break;
1026 }
1027 }
1028
1029 v = (v << 8) | c;
1030 }
1031
1032 return v;
1033#else
1034 return 0;
1035#endif
1036}
1037
1038/*****************************************************************************/
1039
1040#if EV_AVOID_STDIO
1041static void noinline ecb_cold
1042ev_printerr (const char *msg)
1043{
1044 write (STDERR_FILENO, msg, strlen (msg));
1045}
1046#endif
1047
418static void (*syserr_cb)(const char *msg); 1048static void (*syserr_cb)(const char *msg);
419 1049
420void 1050void ecb_cold
421ev_set_syserr_cb (void (*cb)(const char *msg)) 1051ev_set_syserr_cb (void (*cb)(const char *msg))
422{ 1052{
423 syserr_cb = cb; 1053 syserr_cb = cb;
424} 1054}
425 1055
426static void noinline 1056static void noinline ecb_cold
427ev_syserr (const char *msg) 1057ev_syserr (const char *msg)
428{ 1058{
429 if (!msg) 1059 if (!msg)
430 msg = "(libev) system error"; 1060 msg = "(libev) system error";
431 1061
432 if (syserr_cb) 1062 if (syserr_cb)
433 syserr_cb (msg); 1063 syserr_cb (msg);
434 else 1064 else
435 { 1065 {
1066#if EV_AVOID_STDIO
1067 ev_printerr (msg);
1068 ev_printerr (": ");
1069 ev_printerr (strerror (errno));
1070 ev_printerr ("\n");
1071#else
436 perror (msg); 1072 perror (msg);
1073#endif
437 abort (); 1074 abort ();
438 } 1075 }
439} 1076}
440 1077
441static void * 1078static void *
442ev_realloc_emul (void *ptr, long size) 1079ev_realloc_emul (void *ptr, long size)
443{ 1080{
1081#if __GLIBC__
1082 return realloc (ptr, size);
1083#else
444 /* some systems, notably openbsd and darwin, fail to properly 1084 /* some systems, notably openbsd and darwin, fail to properly
445 * implement realloc (x, 0) (as required by both ansi c-98 and 1085 * implement realloc (x, 0) (as required by both ansi c-89 and
446 * the single unix specification, so work around them here. 1086 * the single unix specification, so work around them here.
447 */ 1087 */
448 1088
449 if (size) 1089 if (size)
450 return realloc (ptr, size); 1090 return realloc (ptr, size);
451 1091
452 free (ptr); 1092 free (ptr);
453 return 0; 1093 return 0;
1094#endif
454} 1095}
455 1096
456static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1097static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
457 1098
458void 1099void ecb_cold
459ev_set_allocator (void *(*cb)(void *ptr, long size)) 1100ev_set_allocator (void *(*cb)(void *ptr, long size))
460{ 1101{
461 alloc = cb; 1102 alloc = cb;
462} 1103}
463 1104
… …
466{ 1107{
467 ptr = alloc (ptr, size); 1108 ptr = alloc (ptr, size);
468 1109
469 if (!ptr && size) 1110 if (!ptr && size)
470 { 1111 {
1112#if EV_AVOID_STDIO
1113 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1114#else
471 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1115 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1116#endif
472 abort (); 1117 abort ();
473 } 1118 }
474 1119
475 return ptr; 1120 return ptr;
476} 1121}
… …
478#define ev_malloc(size) ev_realloc (0, (size)) 1123#define ev_malloc(size) ev_realloc (0, (size))
479#define ev_free(ptr) ev_realloc ((ptr), 0) 1124#define ev_free(ptr) ev_realloc ((ptr), 0)
480 1125
481/*****************************************************************************/ 1126/*****************************************************************************/
482 1127
1128/* set in reify when reification needed */
1129#define EV_ANFD_REIFY 1
1130
1131/* file descriptor info structure */
483typedef struct 1132typedef struct
484{ 1133{
485 WL head; 1134 WL head;
486 unsigned char events; 1135 unsigned char events; /* the events watched for */
487 unsigned char reify; 1136 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 */ 1137 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489 unsigned char unused; 1138 unsigned char unused;
490#if EV_USE_EPOLL 1139#if EV_USE_EPOLL
491 unsigned int egen; /* generation counter to counter epoll bugs */ 1140 unsigned int egen; /* generation counter to counter epoll bugs */
492#endif 1141#endif
493#if EV_SELECT_IS_WINSOCKET 1142#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
494 SOCKET handle; 1143 SOCKET handle;
495#endif 1144#endif
1145#if EV_USE_IOCP
1146 OVERLAPPED or, ow;
1147#endif
496} ANFD; 1148} ANFD;
497 1149
1150/* stores the pending event set for a given watcher */
498typedef struct 1151typedef struct
499{ 1152{
500 W w; 1153 W w;
501 int events; 1154 int events; /* the pending event set for the given watcher */
502} ANPENDING; 1155} ANPENDING;
503 1156
504#if EV_USE_INOTIFY 1157#if EV_USE_INOTIFY
505/* hash table entry per inotify-id */ 1158/* hash table entry per inotify-id */
506typedef struct 1159typedef struct
… …
509} ANFS; 1162} ANFS;
510#endif 1163#endif
511 1164
512/* Heap Entry */ 1165/* Heap Entry */
513#if EV_HEAP_CACHE_AT 1166#if EV_HEAP_CACHE_AT
1167 /* a heap element */
514 typedef struct { 1168 typedef struct {
515 ev_tstamp at; 1169 ev_tstamp at;
516 WT w; 1170 WT w;
517 } ANHE; 1171 } ANHE;
518 1172
519 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1173 #define ANHE_w(he) (he).w /* access watcher, read-write */
520 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1174 #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 */ 1175 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522#else 1176#else
1177 /* a heap element */
523 typedef WT ANHE; 1178 typedef WT ANHE;
524 1179
525 #define ANHE_w(he) (he) 1180 #define ANHE_w(he) (he)
526 #define ANHE_at(he) (he)->at 1181 #define ANHE_at(he) (he)->at
527 #define ANHE_at_cache(he) 1182 #define ANHE_at_cache(he)
… …
551 1206
552 static int ev_default_loop_ptr; 1207 static int ev_default_loop_ptr;
553 1208
554#endif 1209#endif
555 1210
1211#if EV_FEATURE_API
1212# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1213# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1214# define EV_INVOKE_PENDING invoke_cb (EV_A)
1215#else
1216# define EV_RELEASE_CB (void)0
1217# define EV_ACQUIRE_CB (void)0
1218# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1219#endif
1220
1221#define EVBREAK_RECURSE 0x80
1222
556/*****************************************************************************/ 1223/*****************************************************************************/
557 1224
1225#ifndef EV_HAVE_EV_TIME
558ev_tstamp 1226ev_tstamp
559ev_time (void) 1227ev_time (void)
560{ 1228{
561#if EV_USE_REALTIME 1229#if EV_USE_REALTIME
562 if (expect_true (have_realtime)) 1230 if (expect_true (have_realtime))
… …
569 1237
570 struct timeval tv; 1238 struct timeval tv;
571 gettimeofday (&tv, 0); 1239 gettimeofday (&tv, 0);
572 return tv.tv_sec + tv.tv_usec * 1e-6; 1240 return tv.tv_sec + tv.tv_usec * 1e-6;
573} 1241}
1242#endif
574 1243
575inline_size ev_tstamp 1244inline_size ev_tstamp
576get_clock (void) 1245get_clock (void)
577{ 1246{
578#if EV_USE_MONOTONIC 1247#if EV_USE_MONOTONIC
… …
601 if (delay > 0.) 1270 if (delay > 0.)
602 { 1271 {
603#if EV_USE_NANOSLEEP 1272#if EV_USE_NANOSLEEP
604 struct timespec ts; 1273 struct timespec ts;
605 1274
606 ts.tv_sec = (time_t)delay; 1275 EV_TS_SET (ts, delay);
607 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
608
609 nanosleep (&ts, 0); 1276 nanosleep (&ts, 0);
610#elif defined(_WIN32) 1277#elif defined(_WIN32)
611 Sleep ((unsigned long)(delay * 1e3)); 1278 Sleep ((unsigned long)(delay * 1e3));
612#else 1279#else
613 struct timeval tv; 1280 struct timeval tv;
614 1281
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 */ 1282 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1283 /* something not guaranteed by newer posix versions, but guaranteed */
620 /* by older ones */ 1284 /* by older ones */
1285 EV_TV_SET (tv, delay);
621 select (0, 0, 0, 0, &tv); 1286 select (0, 0, 0, 0, &tv);
622#endif 1287#endif
623 } 1288 }
624} 1289}
625 1290
626/*****************************************************************************/ 1291/*****************************************************************************/
627 1292
628#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1293#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629 1294
1295/* find a suitable new size for the given array, */
1296/* hopefully by rounding to a nice-to-malloc size */
630inline_size int 1297inline_size int
631array_nextsize (int elem, int cur, int cnt) 1298array_nextsize (int elem, int cur, int cnt)
632{ 1299{
633 int ncur = cur + 1; 1300 int ncur = cur + 1;
634 1301
… …
646 } 1313 }
647 1314
648 return ncur; 1315 return ncur;
649} 1316}
650 1317
651static noinline void * 1318static void * noinline ecb_cold
652array_realloc (int elem, void *base, int *cur, int cnt) 1319array_realloc (int elem, void *base, int *cur, int cnt)
653{ 1320{
654 *cur = array_nextsize (elem, *cur, cnt); 1321 *cur = array_nextsize (elem, *cur, cnt);
655 return ev_realloc (base, elem * *cur); 1322 return ev_realloc (base, elem * *cur);
656} 1323}
… …
659 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1326 memset ((void *)(base), 0, sizeof (*(base)) * (count))
660 1327
661#define array_needsize(type,base,cur,cnt,init) \ 1328#define array_needsize(type,base,cur,cnt,init) \
662 if (expect_false ((cnt) > (cur))) \ 1329 if (expect_false ((cnt) > (cur))) \
663 { \ 1330 { \
664 int ocur_ = (cur); \ 1331 int ecb_unused ocur_ = (cur); \
665 (base) = (type *)array_realloc \ 1332 (base) = (type *)array_realloc \
666 (sizeof (type), (base), &(cur), (cnt)); \ 1333 (sizeof (type), (base), &(cur), (cnt)); \
667 init ((base) + (ocur_), (cur) - ocur_); \ 1334 init ((base) + (ocur_), (cur) - ocur_); \
668 } 1335 }
669 1336
… …
680#define array_free(stem, idx) \ 1347#define array_free(stem, idx) \
681 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1348 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682 1349
683/*****************************************************************************/ 1350/*****************************************************************************/
684 1351
1352/* dummy callback for pending events */
1353static void noinline
1354pendingcb (EV_P_ ev_prepare *w, int revents)
1355{
1356}
1357
685void noinline 1358void noinline
686ev_feed_event (EV_P_ void *w, int revents) 1359ev_feed_event (EV_P_ void *w, int revents)
687{ 1360{
688 W w_ = (W)w; 1361 W w_ = (W)w;
689 int pri = ABSPRI (w_); 1362 int pri = ABSPRI (w_);
… …
724} 1397}
725 1398
726/*****************************************************************************/ 1399/*****************************************************************************/
727 1400
728inline_speed void 1401inline_speed void
729fd_event (EV_P_ int fd, int revents) 1402fd_event_nocheck (EV_P_ int fd, int revents)
730{ 1403{
731 ANFD *anfd = anfds + fd; 1404 ANFD *anfd = anfds + fd;
732 ev_io *w; 1405 ev_io *w;
733 1406
734 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1407 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
738 if (ev) 1411 if (ev)
739 ev_feed_event (EV_A_ (W)w, ev); 1412 ev_feed_event (EV_A_ (W)w, ev);
740 } 1413 }
741} 1414}
742 1415
1416/* do not submit kernel events for fds that have reify set */
1417/* because that means they changed while we were polling for new events */
1418inline_speed void
1419fd_event (EV_P_ int fd, int revents)
1420{
1421 ANFD *anfd = anfds + fd;
1422
1423 if (expect_true (!anfd->reify))
1424 fd_event_nocheck (EV_A_ fd, revents);
1425}
1426
743void 1427void
744ev_feed_fd_event (EV_P_ int fd, int revents) 1428ev_feed_fd_event (EV_P_ int fd, int revents)
745{ 1429{
746 if (fd >= 0 && fd < anfdmax) 1430 if (fd >= 0 && fd < anfdmax)
747 fd_event (EV_A_ fd, revents); 1431 fd_event_nocheck (EV_A_ fd, revents);
748} 1432}
749 1433
1434/* make sure the external fd watch events are in-sync */
1435/* with the kernel/libev internal state */
750inline_size void 1436inline_size void
751fd_reify (EV_P) 1437fd_reify (EV_P)
752{ 1438{
753 int i; 1439 int i;
1440
1441#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1442 for (i = 0; i < fdchangecnt; ++i)
1443 {
1444 int fd = fdchanges [i];
1445 ANFD *anfd = anfds + fd;
1446
1447 if (anfd->reify & EV__IOFDSET && anfd->head)
1448 {
1449 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1450
1451 if (handle != anfd->handle)
1452 {
1453 unsigned long arg;
1454
1455 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1456
1457 /* handle changed, but fd didn't - we need to do it in two steps */
1458 backend_modify (EV_A_ fd, anfd->events, 0);
1459 anfd->events = 0;
1460 anfd->handle = handle;
1461 }
1462 }
1463 }
1464#endif
754 1465
755 for (i = 0; i < fdchangecnt; ++i) 1466 for (i = 0; i < fdchangecnt; ++i)
756 { 1467 {
757 int fd = fdchanges [i]; 1468 int fd = fdchanges [i];
758 ANFD *anfd = anfds + fd; 1469 ANFD *anfd = anfds + fd;
759 ev_io *w; 1470 ev_io *w;
760 1471
761 unsigned char events = 0; 1472 unsigned char o_events = anfd->events;
1473 unsigned char o_reify = anfd->reify;
762 1474
763 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1475 anfd->reify = 0;
764 events |= (unsigned char)w->events;
765 1476
766#if EV_SELECT_IS_WINSOCKET 1477 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
767 if (events)
768 { 1478 {
769 unsigned long arg; 1479 anfd->events = 0;
770 #ifdef EV_FD_TO_WIN32_HANDLE 1480
771 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1481 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
772 #else 1482 anfd->events |= (unsigned char)w->events;
773 anfd->handle = _get_osfhandle (fd); 1483
774 #endif 1484 if (o_events != anfd->events)
775 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1485 o_reify = EV__IOFDSET; /* actually |= */
776 } 1486 }
777#endif
778 1487
779 { 1488 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); 1489 backend_modify (EV_A_ fd, o_events, anfd->events);
788 }
789 } 1490 }
790 1491
791 fdchangecnt = 0; 1492 fdchangecnt = 0;
792} 1493}
793 1494
1495/* something about the given fd changed */
794inline_size void 1496inline_size void
795fd_change (EV_P_ int fd, int flags) 1497fd_change (EV_P_ int fd, int flags)
796{ 1498{
797 unsigned char reify = anfds [fd].reify; 1499 unsigned char reify = anfds [fd].reify;
798 anfds [fd].reify |= flags; 1500 anfds [fd].reify |= flags;
… …
803 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1505 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
804 fdchanges [fdchangecnt - 1] = fd; 1506 fdchanges [fdchangecnt - 1] = fd;
805 } 1507 }
806} 1508}
807 1509
1510/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
808inline_speed void 1511inline_speed void ecb_cold
809fd_kill (EV_P_ int fd) 1512fd_kill (EV_P_ int fd)
810{ 1513{
811 ev_io *w; 1514 ev_io *w;
812 1515
813 while ((w = (ev_io *)anfds [fd].head)) 1516 while ((w = (ev_io *)anfds [fd].head))
… …
815 ev_io_stop (EV_A_ w); 1518 ev_io_stop (EV_A_ w);
816 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1519 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
817 } 1520 }
818} 1521}
819 1522
1523/* check whether the given fd is actually valid, for error recovery */
820inline_size int 1524inline_size int ecb_cold
821fd_valid (int fd) 1525fd_valid (int fd)
822{ 1526{
823#ifdef _WIN32 1527#ifdef _WIN32
824 return _get_osfhandle (fd) != -1; 1528 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
825#else 1529#else
826 return fcntl (fd, F_GETFD) != -1; 1530 return fcntl (fd, F_GETFD) != -1;
827#endif 1531#endif
828} 1532}
829 1533
830/* called on EBADF to verify fds */ 1534/* called on EBADF to verify fds */
831static void noinline 1535static void noinline ecb_cold
832fd_ebadf (EV_P) 1536fd_ebadf (EV_P)
833{ 1537{
834 int fd; 1538 int fd;
835 1539
836 for (fd = 0; fd < anfdmax; ++fd) 1540 for (fd = 0; fd < anfdmax; ++fd)
… …
838 if (!fd_valid (fd) && errno == EBADF) 1542 if (!fd_valid (fd) && errno == EBADF)
839 fd_kill (EV_A_ fd); 1543 fd_kill (EV_A_ fd);
840} 1544}
841 1545
842/* called on ENOMEM in select/poll to kill some fds and retry */ 1546/* called on ENOMEM in select/poll to kill some fds and retry */
843static void noinline 1547static void noinline ecb_cold
844fd_enomem (EV_P) 1548fd_enomem (EV_P)
845{ 1549{
846 int fd; 1550 int fd;
847 1551
848 for (fd = anfdmax; fd--; ) 1552 for (fd = anfdmax; fd--; )
849 if (anfds [fd].events) 1553 if (anfds [fd].events)
850 { 1554 {
851 fd_kill (EV_A_ fd); 1555 fd_kill (EV_A_ fd);
852 return; 1556 break;
853 } 1557 }
854} 1558}
855 1559
856/* usually called after fork if backend needs to re-arm all fds from scratch */ 1560/* usually called after fork if backend needs to re-arm all fds from scratch */
857static void noinline 1561static void noinline
… …
862 for (fd = 0; fd < anfdmax; ++fd) 1566 for (fd = 0; fd < anfdmax; ++fd)
863 if (anfds [fd].events) 1567 if (anfds [fd].events)
864 { 1568 {
865 anfds [fd].events = 0; 1569 anfds [fd].events = 0;
866 anfds [fd].emask = 0; 1570 anfds [fd].emask = 0;
867 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1571 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
868 } 1572 }
869} 1573}
870 1574
1575/* used to prepare libev internal fd's */
1576/* this is not fork-safe */
1577inline_speed void
1578fd_intern (int fd)
1579{
1580#ifdef _WIN32
1581 unsigned long arg = 1;
1582 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1583#else
1584 fcntl (fd, F_SETFD, FD_CLOEXEC);
1585 fcntl (fd, F_SETFL, O_NONBLOCK);
1586#endif
1587}
1588
871/*****************************************************************************/ 1589/*****************************************************************************/
872 1590
873/* 1591/*
874 * the heap functions want a real array index. array index 0 uis guaranteed to not 1592 * 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 1593 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
876 * the branching factor of the d-tree. 1594 * the branching factor of the d-tree.
877 */ 1595 */
878 1596
879/* 1597/*
… …
947 1665
948 for (;;) 1666 for (;;)
949 { 1667 {
950 int c = k << 1; 1668 int c = k << 1;
951 1669
952 if (c > N + HEAP0 - 1) 1670 if (c >= N + HEAP0)
953 break; 1671 break;
954 1672
955 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1673 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
956 ? 1 : 0; 1674 ? 1 : 0;
957 1675
… …
989 1707
990 heap [k] = he; 1708 heap [k] = he;
991 ev_active (ANHE_w (he)) = k; 1709 ev_active (ANHE_w (he)) = k;
992} 1710}
993 1711
1712/* move an element suitably so it is in a correct place */
994inline_size void 1713inline_size void
995adjustheap (ANHE *heap, int N, int k) 1714adjustheap (ANHE *heap, int N, int k)
996{ 1715{
997 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1716 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
998 upheap (heap, k); 1717 upheap (heap, k);
999 else 1718 else
1000 downheap (heap, N, k); 1719 downheap (heap, N, k);
1001} 1720}
1002 1721
… …
1012 upheap (heap, i + HEAP0); 1731 upheap (heap, i + HEAP0);
1013} 1732}
1014 1733
1015/*****************************************************************************/ 1734/*****************************************************************************/
1016 1735
1736/* associate signal watchers to a signal signal */
1017typedef struct 1737typedef struct
1018{ 1738{
1739 EV_ATOMIC_T pending;
1740#if EV_MULTIPLICITY
1741 EV_P;
1742#endif
1019 WL head; 1743 WL head;
1020 EV_ATOMIC_T gotsig;
1021} ANSIG; 1744} ANSIG;
1022 1745
1023static ANSIG *signals; 1746static ANSIG signals [EV_NSIG - 1];
1024static int signalmax;
1025
1026static EV_ATOMIC_T gotsig;
1027 1747
1028/*****************************************************************************/ 1748/*****************************************************************************/
1029 1749
1030inline_speed void 1750#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 1751
1042static void noinline 1752static void noinline ecb_cold
1043evpipe_init (EV_P) 1753evpipe_init (EV_P)
1044{ 1754{
1045 if (!ev_is_active (&pipeev)) 1755 if (!ev_is_active (&pipe_w))
1046 { 1756 {
1047#if EV_USE_EVENTFD 1757# if EV_USE_EVENTFD
1758 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1759 if (evfd < 0 && errno == EINVAL)
1048 if ((evfd = eventfd (0, 0)) >= 0) 1760 evfd = eventfd (0, 0);
1761
1762 if (evfd >= 0)
1049 { 1763 {
1050 evpipe [0] = -1; 1764 evpipe [0] = -1;
1051 fd_intern (evfd); 1765 fd_intern (evfd); /* doing it twice doesn't hurt */
1052 ev_io_set (&pipeev, evfd, EV_READ); 1766 ev_io_set (&pipe_w, evfd, EV_READ);
1053 } 1767 }
1054 else 1768 else
1055#endif 1769# endif
1056 { 1770 {
1057 while (pipe (evpipe)) 1771 while (pipe (evpipe))
1058 ev_syserr ("(libev) error creating signal/async pipe"); 1772 ev_syserr ("(libev) error creating signal/async pipe");
1059 1773
1060 fd_intern (evpipe [0]); 1774 fd_intern (evpipe [0]);
1061 fd_intern (evpipe [1]); 1775 fd_intern (evpipe [1]);
1062 ev_io_set (&pipeev, evpipe [0], EV_READ); 1776 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1063 } 1777 }
1064 1778
1065 ev_io_start (EV_A_ &pipeev); 1779 ev_io_start (EV_A_ &pipe_w);
1066 ev_unref (EV_A); /* watcher should not keep loop alive */ 1780 ev_unref (EV_A); /* watcher should not keep loop alive */
1067 } 1781 }
1068} 1782}
1069 1783
1070inline_size void 1784inline_speed void
1071evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1785evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1072{ 1786{
1073 if (!*flag) 1787 if (expect_true (*flag))
1788 return;
1789
1790 *flag = 1;
1791
1792 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1793
1794 pipe_write_skipped = 1;
1795
1796 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1797
1798 if (pipe_write_wanted)
1074 { 1799 {
1800 int old_errno;
1801
1802 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1803
1075 int old_errno = errno; /* save errno because write might clobber it */ 1804 old_errno = errno; /* save errno because write will clobber it */
1076
1077 *flag = 1;
1078 1805
1079#if EV_USE_EVENTFD 1806#if EV_USE_EVENTFD
1080 if (evfd >= 0) 1807 if (evfd >= 0)
1081 { 1808 {
1082 uint64_t counter = 1; 1809 uint64_t counter = 1;
1083 write (evfd, &counter, sizeof (uint64_t)); 1810 write (evfd, &counter, sizeof (uint64_t));
1084 } 1811 }
1085 else 1812 else
1086#endif 1813#endif
1814 {
1815 /* win32 people keep sending patches that change this write() to send() */
1816 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1817 /* so when you think this write should be a send instead, please find out */
1818 /* where your send() is from - it's definitely not the microsoft send, and */
1819 /* tell me. thank you. */
1087 write (evpipe [1], &old_errno, 1); 1820 write (evpipe [1], &(evpipe [1]), 1);
1821 }
1088 1822
1089 errno = old_errno; 1823 errno = old_errno;
1090 } 1824 }
1091} 1825}
1092 1826
1827/* called whenever the libev signal pipe */
1828/* got some events (signal, async) */
1093static void 1829static void
1094pipecb (EV_P_ ev_io *iow, int revents) 1830pipecb (EV_P_ ev_io *iow, int revents)
1095{ 1831{
1832 int i;
1833
1834 if (revents & EV_READ)
1835 {
1096#if EV_USE_EVENTFD 1836#if EV_USE_EVENTFD
1097 if (evfd >= 0) 1837 if (evfd >= 0)
1098 { 1838 {
1099 uint64_t counter; 1839 uint64_t counter;
1100 read (evfd, &counter, sizeof (uint64_t)); 1840 read (evfd, &counter, sizeof (uint64_t));
1101 } 1841 }
1102 else 1842 else
1103#endif 1843#endif
1104 { 1844 {
1105 char dummy; 1845 char dummy;
1846 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1106 read (evpipe [0], &dummy, 1); 1847 read (evpipe [0], &dummy, 1);
1848 }
1849 }
1850
1851 pipe_write_skipped = 0;
1852
1853#if EV_SIGNAL_ENABLE
1854 if (sig_pending)
1107 } 1855 {
1856 sig_pending = 0;
1108 1857
1109 if (gotsig && ev_is_default_loop (EV_A)) 1858 for (i = EV_NSIG - 1; i--; )
1110 { 1859 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); 1860 ev_feed_signal_event (EV_A_ i + 1);
1117 } 1861 }
1862#endif
1118 1863
1119#if EV_ASYNC_ENABLE 1864#if EV_ASYNC_ENABLE
1120 if (gotasync) 1865 if (async_pending)
1121 { 1866 {
1122 int i; 1867 async_pending = 0;
1123 gotasync = 0;
1124 1868
1125 for (i = asynccnt; i--; ) 1869 for (i = asynccnt; i--; )
1126 if (asyncs [i]->sent) 1870 if (asyncs [i]->sent)
1127 { 1871 {
1128 asyncs [i]->sent = 0; 1872 asyncs [i]->sent = 0;
… …
1132#endif 1876#endif
1133} 1877}
1134 1878
1135/*****************************************************************************/ 1879/*****************************************************************************/
1136 1880
1881void
1882ev_feed_signal (int signum)
1883{
1884#if EV_MULTIPLICITY
1885 EV_P = signals [signum - 1].loop;
1886
1887 if (!EV_A)
1888 return;
1889#endif
1890
1891 if (!ev_active (&pipe_w))
1892 return;
1893
1894 signals [signum - 1].pending = 1;
1895 evpipe_write (EV_A_ &sig_pending);
1896}
1897
1137static void 1898static void
1138ev_sighandler (int signum) 1899ev_sighandler (int signum)
1139{ 1900{
1140#if EV_MULTIPLICITY
1141 struct ev_loop *loop = &default_loop_struct;
1142#endif
1143
1144#if _WIN32 1901#ifdef _WIN32
1145 signal (signum, ev_sighandler); 1902 signal (signum, ev_sighandler);
1146#endif 1903#endif
1147 1904
1148 signals [signum - 1].gotsig = 1; 1905 ev_feed_signal (signum);
1149 evpipe_write (EV_A_ &gotsig);
1150} 1906}
1151 1907
1152void noinline 1908void noinline
1153ev_feed_signal_event (EV_P_ int signum) 1909ev_feed_signal_event (EV_P_ int signum)
1154{ 1910{
1155 WL w; 1911 WL w;
1156 1912
1913 if (expect_false (signum <= 0 || signum > EV_NSIG))
1914 return;
1915
1916 --signum;
1917
1157#if EV_MULTIPLICITY 1918#if EV_MULTIPLICITY
1158 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1919 /* it is permissible to try to feed a signal to the wrong loop */
1159#endif 1920 /* or, likely more useful, feeding a signal nobody is waiting for */
1160 1921
1161 --signum; 1922 if (expect_false (signals [signum].loop != EV_A))
1162
1163 if (signum < 0 || signum >= signalmax)
1164 return; 1923 return;
1924#endif
1165 1925
1166 signals [signum].gotsig = 0; 1926 signals [signum].pending = 0;
1167 1927
1168 for (w = signals [signum].head; w; w = w->next) 1928 for (w = signals [signum].head; w; w = w->next)
1169 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1929 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1170} 1930}
1171 1931
1932#if EV_USE_SIGNALFD
1933static void
1934sigfdcb (EV_P_ ev_io *iow, int revents)
1935{
1936 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1937
1938 for (;;)
1939 {
1940 ssize_t res = read (sigfd, si, sizeof (si));
1941
1942 /* not ISO-C, as res might be -1, but works with SuS */
1943 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1944 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1945
1946 if (res < (ssize_t)sizeof (si))
1947 break;
1948 }
1949}
1950#endif
1951
1952#endif
1953
1172/*****************************************************************************/ 1954/*****************************************************************************/
1173 1955
1956#if EV_CHILD_ENABLE
1174static WL childs [EV_PID_HASHSIZE]; 1957static WL childs [EV_PID_HASHSIZE];
1175
1176#ifndef _WIN32
1177 1958
1178static ev_signal childev; 1959static ev_signal childev;
1179 1960
1180#ifndef WIFCONTINUED 1961#ifndef WIFCONTINUED
1181# define WIFCONTINUED(status) 0 1962# define WIFCONTINUED(status) 0
1182#endif 1963#endif
1183 1964
1965/* handle a single child status event */
1184inline_speed void 1966inline_speed void
1185child_reap (EV_P_ int chain, int pid, int status) 1967child_reap (EV_P_ int chain, int pid, int status)
1186{ 1968{
1187 ev_child *w; 1969 ev_child *w;
1188 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1970 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1189 1971
1190 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1972 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1191 { 1973 {
1192 if ((w->pid == pid || !w->pid) 1974 if ((w->pid == pid || !w->pid)
1193 && (!traced || (w->flags & 1))) 1975 && (!traced || (w->flags & 1)))
1194 { 1976 {
1195 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1977 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1202 1984
1203#ifndef WCONTINUED 1985#ifndef WCONTINUED
1204# define WCONTINUED 0 1986# define WCONTINUED 0
1205#endif 1987#endif
1206 1988
1989/* called on sigchld etc., calls waitpid */
1207static void 1990static void
1208childcb (EV_P_ ev_signal *sw, int revents) 1991childcb (EV_P_ ev_signal *sw, int revents)
1209{ 1992{
1210 int pid, status; 1993 int pid, status;
1211 1994
… …
1219 /* make sure we are called again until all children have been reaped */ 2002 /* 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 */ 2003 /* 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); 2004 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1222 2005
1223 child_reap (EV_A_ pid, pid, status); 2006 child_reap (EV_A_ pid, pid, status);
1224 if (EV_PID_HASHSIZE > 1) 2007 if ((EV_PID_HASHSIZE) > 1)
1225 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2008 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1226} 2009}
1227 2010
1228#endif 2011#endif
1229 2012
1230/*****************************************************************************/ 2013/*****************************************************************************/
1231 2014
2015#if EV_USE_IOCP
2016# include "ev_iocp.c"
2017#endif
1232#if EV_USE_PORT 2018#if EV_USE_PORT
1233# include "ev_port.c" 2019# include "ev_port.c"
1234#endif 2020#endif
1235#if EV_USE_KQUEUE 2021#if EV_USE_KQUEUE
1236# include "ev_kqueue.c" 2022# include "ev_kqueue.c"
… …
1243#endif 2029#endif
1244#if EV_USE_SELECT 2030#if EV_USE_SELECT
1245# include "ev_select.c" 2031# include "ev_select.c"
1246#endif 2032#endif
1247 2033
1248int 2034int ecb_cold
1249ev_version_major (void) 2035ev_version_major (void)
1250{ 2036{
1251 return EV_VERSION_MAJOR; 2037 return EV_VERSION_MAJOR;
1252} 2038}
1253 2039
1254int 2040int ecb_cold
1255ev_version_minor (void) 2041ev_version_minor (void)
1256{ 2042{
1257 return EV_VERSION_MINOR; 2043 return EV_VERSION_MINOR;
1258} 2044}
1259 2045
1260/* return true if we are running with elevated privileges and should ignore env variables */ 2046/* return true if we are running with elevated privileges and should ignore env variables */
1261int inline_size 2047int inline_size ecb_cold
1262enable_secure (void) 2048enable_secure (void)
1263{ 2049{
1264#ifdef _WIN32 2050#ifdef _WIN32
1265 return 0; 2051 return 0;
1266#else 2052#else
1267 return getuid () != geteuid () 2053 return getuid () != geteuid ()
1268 || getgid () != getegid (); 2054 || getgid () != getegid ();
1269#endif 2055#endif
1270} 2056}
1271 2057
1272unsigned int 2058unsigned int ecb_cold
1273ev_supported_backends (void) 2059ev_supported_backends (void)
1274{ 2060{
1275 unsigned int flags = 0; 2061 unsigned int flags = 0;
1276 2062
1277 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2063 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1281 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2067 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1282 2068
1283 return flags; 2069 return flags;
1284} 2070}
1285 2071
1286unsigned int 2072unsigned int ecb_cold
1287ev_recommended_backends (void) 2073ev_recommended_backends (void)
1288{ 2074{
1289 unsigned int flags = ev_supported_backends (); 2075 unsigned int flags = ev_supported_backends ();
1290 2076
1291#ifndef __NetBSD__ 2077#ifndef __NetBSD__
… …
1296#ifdef __APPLE__ 2082#ifdef __APPLE__
1297 /* only select works correctly on that "unix-certified" platform */ 2083 /* only select works correctly on that "unix-certified" platform */
1298 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2084 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1299 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2085 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1300#endif 2086#endif
2087#ifdef __FreeBSD__
2088 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2089#endif
1301 2090
1302 return flags; 2091 return flags;
1303} 2092}
1304 2093
1305unsigned int 2094unsigned int ecb_cold
1306ev_embeddable_backends (void) 2095ev_embeddable_backends (void)
1307{ 2096{
1308 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2097 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1309 2098
1310 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2099 /* 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 */ 2100 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1312 flags &= ~EVBACKEND_EPOLL; 2101 flags &= ~EVBACKEND_EPOLL;
1313 2102
1314 return flags; 2103 return flags;
1315} 2104}
1316 2105
1317unsigned int 2106unsigned int
1318ev_backend (EV_P) 2107ev_backend (EV_P)
1319{ 2108{
1320 return backend; 2109 return backend;
1321} 2110}
1322 2111
2112#if EV_FEATURE_API
1323unsigned int 2113unsigned int
1324ev_loop_count (EV_P) 2114ev_iteration (EV_P)
1325{ 2115{
1326 return loop_count; 2116 return loop_count;
2117}
2118
2119unsigned int
2120ev_depth (EV_P)
2121{
2122 return loop_depth;
1327} 2123}
1328 2124
1329void 2125void
1330ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2126ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1331{ 2127{
… …
1336ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2132ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1337{ 2133{
1338 timeout_blocktime = interval; 2134 timeout_blocktime = interval;
1339} 2135}
1340 2136
2137void
2138ev_set_userdata (EV_P_ void *data)
2139{
2140 userdata = data;
2141}
2142
2143void *
2144ev_userdata (EV_P)
2145{
2146 return userdata;
2147}
2148
2149void
2150ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
2151{
2152 invoke_cb = invoke_pending_cb;
2153}
2154
2155void
2156ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
2157{
2158 release_cb = release;
2159 acquire_cb = acquire;
2160}
2161#endif
2162
2163/* initialise a loop structure, must be zero-initialised */
1341static void noinline 2164static void noinline ecb_cold
1342loop_init (EV_P_ unsigned int flags) 2165loop_init (EV_P_ unsigned int flags)
1343{ 2166{
1344 if (!backend) 2167 if (!backend)
1345 { 2168 {
2169 origflags = flags;
2170
1346#if EV_USE_REALTIME 2171#if EV_USE_REALTIME
1347 if (!have_realtime) 2172 if (!have_realtime)
1348 { 2173 {
1349 struct timespec ts; 2174 struct timespec ts;
1350 2175
… …
1361 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2186 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1362 have_monotonic = 1; 2187 have_monotonic = 1;
1363 } 2188 }
1364#endif 2189#endif
1365 2190
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 */ 2191 /* pid check not overridable via env */
1381#ifndef _WIN32 2192#ifndef _WIN32
1382 if (flags & EVFLAG_FORKCHECK) 2193 if (flags & EVFLAG_FORKCHECK)
1383 curpid = getpid (); 2194 curpid = getpid ();
1384#endif 2195#endif
… …
1386 if (!(flags & EVFLAG_NOENV) 2197 if (!(flags & EVFLAG_NOENV)
1387 && !enable_secure () 2198 && !enable_secure ()
1388 && getenv ("LIBEV_FLAGS")) 2199 && getenv ("LIBEV_FLAGS"))
1389 flags = atoi (getenv ("LIBEV_FLAGS")); 2200 flags = atoi (getenv ("LIBEV_FLAGS"));
1390 2201
1391 if (!(flags & 0x0000ffffU)) 2202 ev_rt_now = ev_time ();
2203 mn_now = get_clock ();
2204 now_floor = mn_now;
2205 rtmn_diff = ev_rt_now - mn_now;
2206#if EV_FEATURE_API
2207 invoke_cb = ev_invoke_pending;
2208#endif
2209
2210 io_blocktime = 0.;
2211 timeout_blocktime = 0.;
2212 backend = 0;
2213 backend_fd = -1;
2214 sig_pending = 0;
2215#if EV_ASYNC_ENABLE
2216 async_pending = 0;
2217#endif
2218 pipe_write_skipped = 0;
2219 pipe_write_wanted = 0;
2220#if EV_USE_INOTIFY
2221 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2222#endif
2223#if EV_USE_SIGNALFD
2224 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2225#endif
2226
2227 if (!(flags & EVBACKEND_MASK))
1392 flags |= ev_recommended_backends (); 2228 flags |= ev_recommended_backends ();
1393 2229
2230#if EV_USE_IOCP
2231 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2232#endif
1394#if EV_USE_PORT 2233#if EV_USE_PORT
1395 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2234 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1396#endif 2235#endif
1397#if EV_USE_KQUEUE 2236#if EV_USE_KQUEUE
1398 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2237 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1405#endif 2244#endif
1406#if EV_USE_SELECT 2245#if EV_USE_SELECT
1407 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2246 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1408#endif 2247#endif
1409 2248
2249 ev_prepare_init (&pending_w, pendingcb);
2250
2251#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1410 ev_init (&pipeev, pipecb); 2252 ev_init (&pipe_w, pipecb);
1411 ev_set_priority (&pipeev, EV_MAXPRI); 2253 ev_set_priority (&pipe_w, EV_MAXPRI);
2254#endif
1412 } 2255 }
1413} 2256}
1414 2257
1415static void noinline 2258/* free up a loop structure */
2259void ecb_cold
1416loop_destroy (EV_P) 2260ev_loop_destroy (EV_P)
1417{ 2261{
1418 int i; 2262 int i;
1419 2263
2264#if EV_MULTIPLICITY
2265 /* mimic free (0) */
2266 if (!EV_A)
2267 return;
2268#endif
2269
2270#if EV_CLEANUP_ENABLE
2271 /* queue cleanup watchers (and execute them) */
2272 if (expect_false (cleanupcnt))
2273 {
2274 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2275 EV_INVOKE_PENDING;
2276 }
2277#endif
2278
2279#if EV_CHILD_ENABLE
2280 if (ev_is_active (&childev))
2281 {
2282 ev_ref (EV_A); /* child watcher */
2283 ev_signal_stop (EV_A_ &childev);
2284 }
2285#endif
2286
1420 if (ev_is_active (&pipeev)) 2287 if (ev_is_active (&pipe_w))
1421 { 2288 {
1422 ev_ref (EV_A); /* signal watcher */ 2289 /*ev_ref (EV_A);*/
1423 ev_io_stop (EV_A_ &pipeev); 2290 /*ev_io_stop (EV_A_ &pipe_w);*/
1424 2291
1425#if EV_USE_EVENTFD 2292#if EV_USE_EVENTFD
1426 if (evfd >= 0) 2293 if (evfd >= 0)
1427 close (evfd); 2294 close (evfd);
1428#endif 2295#endif
1429 2296
1430 if (evpipe [0] >= 0) 2297 if (evpipe [0] >= 0)
1431 { 2298 {
1432 close (evpipe [0]); 2299 EV_WIN32_CLOSE_FD (evpipe [0]);
1433 close (evpipe [1]); 2300 EV_WIN32_CLOSE_FD (evpipe [1]);
1434 } 2301 }
1435 } 2302 }
2303
2304#if EV_USE_SIGNALFD
2305 if (ev_is_active (&sigfd_w))
2306 close (sigfd);
2307#endif
1436 2308
1437#if EV_USE_INOTIFY 2309#if EV_USE_INOTIFY
1438 if (fs_fd >= 0) 2310 if (fs_fd >= 0)
1439 close (fs_fd); 2311 close (fs_fd);
1440#endif 2312#endif
1441 2313
1442 if (backend_fd >= 0) 2314 if (backend_fd >= 0)
1443 close (backend_fd); 2315 close (backend_fd);
1444 2316
2317#if EV_USE_IOCP
2318 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2319#endif
1445#if EV_USE_PORT 2320#if EV_USE_PORT
1446 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2321 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1447#endif 2322#endif
1448#if EV_USE_KQUEUE 2323#if EV_USE_KQUEUE
1449 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2324 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1464#if EV_IDLE_ENABLE 2339#if EV_IDLE_ENABLE
1465 array_free (idle, [i]); 2340 array_free (idle, [i]);
1466#endif 2341#endif
1467 } 2342 }
1468 2343
1469 ev_free (anfds); anfdmax = 0; 2344 ev_free (anfds); anfds = 0; anfdmax = 0;
1470 2345
1471 /* have to use the microsoft-never-gets-it-right macro */ 2346 /* have to use the microsoft-never-gets-it-right macro */
1472 array_free (rfeed, EMPTY); 2347 array_free (rfeed, EMPTY);
1473 array_free (fdchange, EMPTY); 2348 array_free (fdchange, EMPTY);
1474 array_free (timer, EMPTY); 2349 array_free (timer, EMPTY);
… …
1476 array_free (periodic, EMPTY); 2351 array_free (periodic, EMPTY);
1477#endif 2352#endif
1478#if EV_FORK_ENABLE 2353#if EV_FORK_ENABLE
1479 array_free (fork, EMPTY); 2354 array_free (fork, EMPTY);
1480#endif 2355#endif
2356#if EV_CLEANUP_ENABLE
2357 array_free (cleanup, EMPTY);
2358#endif
1481 array_free (prepare, EMPTY); 2359 array_free (prepare, EMPTY);
1482 array_free (check, EMPTY); 2360 array_free (check, EMPTY);
1483#if EV_ASYNC_ENABLE 2361#if EV_ASYNC_ENABLE
1484 array_free (async, EMPTY); 2362 array_free (async, EMPTY);
1485#endif 2363#endif
1486 2364
1487 backend = 0; 2365 backend = 0;
2366
2367#if EV_MULTIPLICITY
2368 if (ev_is_default_loop (EV_A))
2369#endif
2370 ev_default_loop_ptr = 0;
2371#if EV_MULTIPLICITY
2372 else
2373 ev_free (EV_A);
2374#endif
1488} 2375}
1489 2376
1490#if EV_USE_INOTIFY 2377#if EV_USE_INOTIFY
1491inline_size void infy_fork (EV_P); 2378inline_size void infy_fork (EV_P);
1492#endif 2379#endif
… …
1505#endif 2392#endif
1506#if EV_USE_INOTIFY 2393#if EV_USE_INOTIFY
1507 infy_fork (EV_A); 2394 infy_fork (EV_A);
1508#endif 2395#endif
1509 2396
1510 if (ev_is_active (&pipeev)) 2397 if (ev_is_active (&pipe_w))
1511 { 2398 {
1512 /* this "locks" the handlers against writing to the pipe */ 2399 /* 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 2400
1519 ev_ref (EV_A); 2401 ev_ref (EV_A);
1520 ev_io_stop (EV_A_ &pipeev); 2402 ev_io_stop (EV_A_ &pipe_w);
1521 2403
1522#if EV_USE_EVENTFD 2404#if EV_USE_EVENTFD
1523 if (evfd >= 0) 2405 if (evfd >= 0)
1524 close (evfd); 2406 close (evfd);
1525#endif 2407#endif
1526 2408
1527 if (evpipe [0] >= 0) 2409 if (evpipe [0] >= 0)
1528 { 2410 {
1529 close (evpipe [0]); 2411 EV_WIN32_CLOSE_FD (evpipe [0]);
1530 close (evpipe [1]); 2412 EV_WIN32_CLOSE_FD (evpipe [1]);
1531 } 2413 }
1532 2414
2415#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1533 evpipe_init (EV_A); 2416 evpipe_init (EV_A);
1534 /* now iterate over everything, in case we missed something */ 2417 /* now iterate over everything, in case we missed something */
1535 pipecb (EV_A_ &pipeev, EV_READ); 2418 pipecb (EV_A_ &pipe_w, EV_READ);
2419#endif
1536 } 2420 }
1537 2421
1538 postfork = 0; 2422 postfork = 0;
1539} 2423}
1540 2424
1541#if EV_MULTIPLICITY 2425#if EV_MULTIPLICITY
1542 2426
1543struct ev_loop * 2427struct ev_loop * ecb_cold
1544ev_loop_new (unsigned int flags) 2428ev_loop_new (unsigned int flags)
1545{ 2429{
1546 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2430 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1547 2431
1548 memset (loop, 0, sizeof (struct ev_loop)); 2432 memset (EV_A, 0, sizeof (struct ev_loop));
1549
1550 loop_init (EV_A_ flags); 2433 loop_init (EV_A_ flags);
1551 2434
1552 if (ev_backend (EV_A)) 2435 if (ev_backend (EV_A))
1553 return loop; 2436 return EV_A;
1554 2437
2438 ev_free (EV_A);
1555 return 0; 2439 return 0;
1556} 2440}
1557 2441
1558void 2442#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 2443
1571#if EV_VERIFY 2444#if EV_VERIFY
1572static void noinline 2445static void noinline ecb_cold
1573verify_watcher (EV_P_ W w) 2446verify_watcher (EV_P_ W w)
1574{ 2447{
1575 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2448 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1576 2449
1577 if (w->pending) 2450 if (w->pending)
1578 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2451 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1579} 2452}
1580 2453
1581static void noinline 2454static void noinline ecb_cold
1582verify_heap (EV_P_ ANHE *heap, int N) 2455verify_heap (EV_P_ ANHE *heap, int N)
1583{ 2456{
1584 int i; 2457 int i;
1585 2458
1586 for (i = HEAP0; i < N + HEAP0; ++i) 2459 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1591 2464
1592 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2465 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1593 } 2466 }
1594} 2467}
1595 2468
1596static void noinline 2469static void noinline ecb_cold
1597array_verify (EV_P_ W *ws, int cnt) 2470array_verify (EV_P_ W *ws, int cnt)
1598{ 2471{
1599 while (cnt--) 2472 while (cnt--)
1600 { 2473 {
1601 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2474 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1602 verify_watcher (EV_A_ ws [cnt]); 2475 verify_watcher (EV_A_ ws [cnt]);
1603 } 2476 }
1604} 2477}
1605#endif 2478#endif
1606 2479
1607void 2480#if EV_FEATURE_API
2481void ecb_cold
1608ev_loop_verify (EV_P) 2482ev_verify (EV_P)
1609{ 2483{
1610#if EV_VERIFY 2484#if EV_VERIFY
1611 int i; 2485 int i;
1612 WL w; 2486 WL w;
1613 2487
… …
1647#if EV_FORK_ENABLE 2521#if EV_FORK_ENABLE
1648 assert (forkmax >= forkcnt); 2522 assert (forkmax >= forkcnt);
1649 array_verify (EV_A_ (W *)forks, forkcnt); 2523 array_verify (EV_A_ (W *)forks, forkcnt);
1650#endif 2524#endif
1651 2525
2526#if EV_CLEANUP_ENABLE
2527 assert (cleanupmax >= cleanupcnt);
2528 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2529#endif
2530
1652#if EV_ASYNC_ENABLE 2531#if EV_ASYNC_ENABLE
1653 assert (asyncmax >= asynccnt); 2532 assert (asyncmax >= asynccnt);
1654 array_verify (EV_A_ (W *)asyncs, asynccnt); 2533 array_verify (EV_A_ (W *)asyncs, asynccnt);
1655#endif 2534#endif
1656 2535
2536#if EV_PREPARE_ENABLE
1657 assert (preparemax >= preparecnt); 2537 assert (preparemax >= preparecnt);
1658 array_verify (EV_A_ (W *)prepares, preparecnt); 2538 array_verify (EV_A_ (W *)prepares, preparecnt);
2539#endif
1659 2540
2541#if EV_CHECK_ENABLE
1660 assert (checkmax >= checkcnt); 2542 assert (checkmax >= checkcnt);
1661 array_verify (EV_A_ (W *)checks, checkcnt); 2543 array_verify (EV_A_ (W *)checks, checkcnt);
2544#endif
1662 2545
1663# if 0 2546# if 0
2547#if EV_CHILD_ENABLE
1664 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2548 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) 2549 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2550#endif
1666# endif 2551# endif
1667#endif 2552#endif
1668} 2553}
1669 2554#endif
1670#endif /* multiplicity */
1671 2555
1672#if EV_MULTIPLICITY 2556#if EV_MULTIPLICITY
1673struct ev_loop * 2557struct ev_loop * ecb_cold
1674ev_default_loop_init (unsigned int flags)
1675#else 2558#else
1676int 2559int
2560#endif
1677ev_default_loop (unsigned int flags) 2561ev_default_loop (unsigned int flags)
1678#endif
1679{ 2562{
1680 if (!ev_default_loop_ptr) 2563 if (!ev_default_loop_ptr)
1681 { 2564 {
1682#if EV_MULTIPLICITY 2565#if EV_MULTIPLICITY
1683 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2566 EV_P = ev_default_loop_ptr = &default_loop_struct;
1684#else 2567#else
1685 ev_default_loop_ptr = 1; 2568 ev_default_loop_ptr = 1;
1686#endif 2569#endif
1687 2570
1688 loop_init (EV_A_ flags); 2571 loop_init (EV_A_ flags);
1689 2572
1690 if (ev_backend (EV_A)) 2573 if (ev_backend (EV_A))
1691 { 2574 {
1692#ifndef _WIN32 2575#if EV_CHILD_ENABLE
1693 ev_signal_init (&childev, childcb, SIGCHLD); 2576 ev_signal_init (&childev, childcb, SIGCHLD);
1694 ev_set_priority (&childev, EV_MAXPRI); 2577 ev_set_priority (&childev, EV_MAXPRI);
1695 ev_signal_start (EV_A_ &childev); 2578 ev_signal_start (EV_A_ &childev);
1696 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2579 ev_unref (EV_A); /* child watcher should not keep loop alive */
1697#endif 2580#endif
… …
1702 2585
1703 return ev_default_loop_ptr; 2586 return ev_default_loop_ptr;
1704} 2587}
1705 2588
1706void 2589void
1707ev_default_destroy (void) 2590ev_loop_fork (EV_P)
1708{ 2591{
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 */ 2592 postfork = 1; /* must be in line with ev_default_fork */
1731} 2593}
1732 2594
1733/*****************************************************************************/ 2595/*****************************************************************************/
1734 2596
1735void 2597void
1736ev_invoke (EV_P_ void *w, int revents) 2598ev_invoke (EV_P_ void *w, int revents)
1737{ 2599{
1738 EV_CB_INVOKE ((W)w, revents); 2600 EV_CB_INVOKE ((W)w, revents);
1739} 2601}
1740 2602
1741inline_speed void 2603unsigned int
1742call_pending (EV_P) 2604ev_pending_count (EV_P)
2605{
2606 int pri;
2607 unsigned int count = 0;
2608
2609 for (pri = NUMPRI; pri--; )
2610 count += pendingcnt [pri];
2611
2612 return count;
2613}
2614
2615void noinline
2616ev_invoke_pending (EV_P)
1743{ 2617{
1744 int pri; 2618 int pri;
1745 2619
1746 for (pri = NUMPRI; pri--; ) 2620 for (pri = NUMPRI; pri--; )
1747 while (pendingcnt [pri]) 2621 while (pendingcnt [pri])
1748 { 2622 {
1749 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2623 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1750 2624
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; 2625 p->w->pending = 0;
1756 EV_CB_INVOKE (p->w, p->events); 2626 EV_CB_INVOKE (p->w, p->events);
1757 EV_FREQUENT_CHECK; 2627 EV_FREQUENT_CHECK;
1758 }
1759 } 2628 }
1760} 2629}
1761 2630
1762#if EV_IDLE_ENABLE 2631#if EV_IDLE_ENABLE
2632/* make idle watchers pending. this handles the "call-idle */
2633/* only when higher priorities are idle" logic */
1763inline_size void 2634inline_size void
1764idle_reify (EV_P) 2635idle_reify (EV_P)
1765{ 2636{
1766 if (expect_false (idleall)) 2637 if (expect_false (idleall))
1767 { 2638 {
… …
1780 } 2651 }
1781 } 2652 }
1782} 2653}
1783#endif 2654#endif
1784 2655
2656/* make timers pending */
1785inline_size void 2657inline_size void
1786timers_reify (EV_P) 2658timers_reify (EV_P)
1787{ 2659{
1788 EV_FREQUENT_CHECK; 2660 EV_FREQUENT_CHECK;
1789 2661
… …
1813 EV_FREQUENT_CHECK; 2685 EV_FREQUENT_CHECK;
1814 feed_reverse (EV_A_ (W)w); 2686 feed_reverse (EV_A_ (W)w);
1815 } 2687 }
1816 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2688 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1817 2689
1818 feed_reverse_done (EV_A_ EV_TIMEOUT); 2690 feed_reverse_done (EV_A_ EV_TIMER);
1819 } 2691 }
1820} 2692}
1821 2693
1822#if EV_PERIODIC_ENABLE 2694#if EV_PERIODIC_ENABLE
2695
2696static void noinline
2697periodic_recalc (EV_P_ ev_periodic *w)
2698{
2699 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2700 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2701
2702 /* the above almost always errs on the low side */
2703 while (at <= ev_rt_now)
2704 {
2705 ev_tstamp nat = at + w->interval;
2706
2707 /* when resolution fails us, we use ev_rt_now */
2708 if (expect_false (nat == at))
2709 {
2710 at = ev_rt_now;
2711 break;
2712 }
2713
2714 at = nat;
2715 }
2716
2717 ev_at (w) = at;
2718}
2719
2720/* make periodics pending */
1823inline_size void 2721inline_size void
1824periodics_reify (EV_P) 2722periodics_reify (EV_P)
1825{ 2723{
1826 EV_FREQUENT_CHECK; 2724 EV_FREQUENT_CHECK;
1827 2725
… …
1845 ANHE_at_cache (periodics [HEAP0]); 2743 ANHE_at_cache (periodics [HEAP0]);
1846 downheap (periodics, periodiccnt, HEAP0); 2744 downheap (periodics, periodiccnt, HEAP0);
1847 } 2745 }
1848 else if (w->interval) 2746 else if (w->interval)
1849 { 2747 {
1850 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2748 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]); 2749 ANHE_at_cache (periodics [HEAP0]);
1865 downheap (periodics, periodiccnt, HEAP0); 2750 downheap (periodics, periodiccnt, HEAP0);
1866 } 2751 }
1867 else 2752 else
1868 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2753 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1874 2759
1875 feed_reverse_done (EV_A_ EV_PERIODIC); 2760 feed_reverse_done (EV_A_ EV_PERIODIC);
1876 } 2761 }
1877} 2762}
1878 2763
2764/* simply recalculate all periodics */
2765/* TODO: maybe ensure that at least one event happens when jumping forward? */
1879static void noinline 2766static void noinline ecb_cold
1880periodics_reschedule (EV_P) 2767periodics_reschedule (EV_P)
1881{ 2768{
1882 int i; 2769 int i;
1883 2770
1884 /* adjust periodics after time jump */ 2771 /* adjust periodics after time jump */
… …
1887 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2774 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1888 2775
1889 if (w->reschedule_cb) 2776 if (w->reschedule_cb)
1890 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2777 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1891 else if (w->interval) 2778 else if (w->interval)
1892 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2779 periodic_recalc (EV_A_ w);
1893 2780
1894 ANHE_at_cache (periodics [i]); 2781 ANHE_at_cache (periodics [i]);
1895 } 2782 }
1896 2783
1897 reheap (periodics, periodiccnt); 2784 reheap (periodics, periodiccnt);
1898} 2785}
1899#endif 2786#endif
1900 2787
2788/* adjust all timers by a given offset */
1901static void noinline 2789static void noinline ecb_cold
1902timers_reschedule (EV_P_ ev_tstamp adjust) 2790timers_reschedule (EV_P_ ev_tstamp adjust)
1903{ 2791{
1904 int i; 2792 int i;
1905 2793
1906 for (i = 0; i < timercnt; ++i) 2794 for (i = 0; i < timercnt; ++i)
… …
1909 ANHE_w (*he)->at += adjust; 2797 ANHE_w (*he)->at += adjust;
1910 ANHE_at_cache (*he); 2798 ANHE_at_cache (*he);
1911 } 2799 }
1912} 2800}
1913 2801
2802/* fetch new monotonic and realtime times from the kernel */
2803/* also detect if there was a timejump, and act accordingly */
1914inline_speed void 2804inline_speed void
1915time_update (EV_P_ ev_tstamp max_block) 2805time_update (EV_P_ ev_tstamp max_block)
1916{ 2806{
1917 int i;
1918
1919#if EV_USE_MONOTONIC 2807#if EV_USE_MONOTONIC
1920 if (expect_true (have_monotonic)) 2808 if (expect_true (have_monotonic))
1921 { 2809 {
2810 int i;
1922 ev_tstamp odiff = rtmn_diff; 2811 ev_tstamp odiff = rtmn_diff;
1923 2812
1924 mn_now = get_clock (); 2813 mn_now = get_clock ();
1925 2814
1926 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2815 /* 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 2831 * doesn't hurt either as we only do this on time-jumps or
1943 * in the unlikely event of having been preempted here. 2832 * in the unlikely event of having been preempted here.
1944 */ 2833 */
1945 for (i = 4; --i; ) 2834 for (i = 4; --i; )
1946 { 2835 {
2836 ev_tstamp diff;
1947 rtmn_diff = ev_rt_now - mn_now; 2837 rtmn_diff = ev_rt_now - mn_now;
1948 2838
2839 diff = odiff - rtmn_diff;
2840
1949 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2841 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1950 return; /* all is well */ 2842 return; /* all is well */
1951 2843
1952 ev_rt_now = ev_time (); 2844 ev_rt_now = ev_time ();
1953 mn_now = get_clock (); 2845 mn_now = get_clock ();
1954 now_floor = mn_now; 2846 now_floor = mn_now;
… …
1976 2868
1977 mn_now = ev_rt_now; 2869 mn_now = ev_rt_now;
1978 } 2870 }
1979} 2871}
1980 2872
1981static int loop_done;
1982
1983void 2873void
1984ev_loop (EV_P_ int flags) 2874ev_run (EV_P_ int flags)
1985{ 2875{
2876#if EV_FEATURE_API
2877 ++loop_depth;
2878#endif
2879
2880 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2881
1986 loop_done = EVUNLOOP_CANCEL; 2882 loop_done = EVBREAK_CANCEL;
1987 2883
1988 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2884 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1989 2885
1990 do 2886 do
1991 { 2887 {
1992#if EV_VERIFY >= 2 2888#if EV_VERIFY >= 2
1993 ev_loop_verify (EV_A); 2889 ev_verify (EV_A);
1994#endif 2890#endif
1995 2891
1996#ifndef _WIN32 2892#ifndef _WIN32
1997 if (expect_false (curpid)) /* penalise the forking check even more */ 2893 if (expect_false (curpid)) /* penalise the forking check even more */
1998 if (expect_false (getpid () != curpid)) 2894 if (expect_false (getpid () != curpid))
… …
2006 /* we might have forked, so queue fork handlers */ 2902 /* we might have forked, so queue fork handlers */
2007 if (expect_false (postfork)) 2903 if (expect_false (postfork))
2008 if (forkcnt) 2904 if (forkcnt)
2009 { 2905 {
2010 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2906 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2011 call_pending (EV_A); 2907 EV_INVOKE_PENDING;
2012 } 2908 }
2013#endif 2909#endif
2014 2910
2911#if EV_PREPARE_ENABLE
2015 /* queue prepare watchers (and execute them) */ 2912 /* queue prepare watchers (and execute them) */
2016 if (expect_false (preparecnt)) 2913 if (expect_false (preparecnt))
2017 { 2914 {
2018 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2915 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2019 call_pending (EV_A); 2916 EV_INVOKE_PENDING;
2020 } 2917 }
2918#endif
2919
2920 if (expect_false (loop_done))
2921 break;
2021 2922
2022 /* we might have forked, so reify kernel state if necessary */ 2923 /* we might have forked, so reify kernel state if necessary */
2023 if (expect_false (postfork)) 2924 if (expect_false (postfork))
2024 loop_fork (EV_A); 2925 loop_fork (EV_A);
2025 2926
… …
2029 /* calculate blocking time */ 2930 /* calculate blocking time */
2030 { 2931 {
2031 ev_tstamp waittime = 0.; 2932 ev_tstamp waittime = 0.;
2032 ev_tstamp sleeptime = 0.; 2933 ev_tstamp sleeptime = 0.;
2033 2934
2935 /* remember old timestamp for io_blocktime calculation */
2936 ev_tstamp prev_mn_now = mn_now;
2937
2938 /* update time to cancel out callback processing overhead */
2939 time_update (EV_A_ 1e100);
2940
2941 /* from now on, we want a pipe-wake-up */
2942 pipe_write_wanted = 1;
2943
2944 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2945
2034 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2946 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2035 { 2947 {
2036 /* update time to cancel out callback processing overhead */ 2948 waittime = MAX_BLOCKTIME;
2037 time_update (EV_A_ 1e100);
2038 2949
2039 if (timercnt) 2950 if (timercnt)
2040 { 2951 {
2041 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2952 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2042 if (waittime > to) waittime = to; 2953 if (waittime > to) waittime = to;
2043 } 2954 }
2044 2955
2045#if EV_PERIODIC_ENABLE 2956#if EV_PERIODIC_ENABLE
2046 if (periodiccnt) 2957 if (periodiccnt)
2047 { 2958 {
2048 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2959 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2049 if (waittime > to) waittime = to; 2960 if (waittime > to) waittime = to;
2050 } 2961 }
2051#endif 2962#endif
2052 2963
2964 /* don't let timeouts decrease the waittime below timeout_blocktime */
2053 if (expect_false (waittime < timeout_blocktime)) 2965 if (expect_false (waittime < timeout_blocktime))
2054 waittime = timeout_blocktime; 2966 waittime = timeout_blocktime;
2055 2967
2056 sleeptime = waittime - backend_fudge; 2968 /* at this point, we NEED to wait, so we have to ensure */
2969 /* to pass a minimum nonzero value to the backend */
2970 if (expect_false (waittime < backend_mintime))
2971 waittime = backend_mintime;
2057 2972
2973 /* extra check because io_blocktime is commonly 0 */
2058 if (expect_true (sleeptime > io_blocktime)) 2974 if (expect_false (io_blocktime))
2059 sleeptime = io_blocktime;
2060
2061 if (sleeptime)
2062 { 2975 {
2976 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2977
2978 if (sleeptime > waittime - backend_mintime)
2979 sleeptime = waittime - backend_mintime;
2980
2981 if (expect_true (sleeptime > 0.))
2982 {
2063 ev_sleep (sleeptime); 2983 ev_sleep (sleeptime);
2064 waittime -= sleeptime; 2984 waittime -= sleeptime;
2985 }
2065 } 2986 }
2066 } 2987 }
2067 2988
2989#if EV_FEATURE_API
2068 ++loop_count; 2990 ++loop_count;
2991#endif
2992 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2069 backend_poll (EV_A_ waittime); 2993 backend_poll (EV_A_ waittime);
2994 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2995
2996 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2997
2998 if (pipe_write_skipped)
2999 {
3000 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3001 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3002 }
3003
2070 3004
2071 /* update ev_rt_now, do magic */ 3005 /* update ev_rt_now, do magic */
2072 time_update (EV_A_ waittime + sleeptime); 3006 time_update (EV_A_ waittime + sleeptime);
2073 } 3007 }
2074 3008
… …
2081#if EV_IDLE_ENABLE 3015#if EV_IDLE_ENABLE
2082 /* queue idle watchers unless other events are pending */ 3016 /* queue idle watchers unless other events are pending */
2083 idle_reify (EV_A); 3017 idle_reify (EV_A);
2084#endif 3018#endif
2085 3019
3020#if EV_CHECK_ENABLE
2086 /* queue check watchers, to be executed first */ 3021 /* queue check watchers, to be executed first */
2087 if (expect_false (checkcnt)) 3022 if (expect_false (checkcnt))
2088 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3023 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3024#endif
2089 3025
2090 call_pending (EV_A); 3026 EV_INVOKE_PENDING;
2091 } 3027 }
2092 while (expect_true ( 3028 while (expect_true (
2093 activecnt 3029 activecnt
2094 && !loop_done 3030 && !loop_done
2095 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3031 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2096 )); 3032 ));
2097 3033
2098 if (loop_done == EVUNLOOP_ONE) 3034 if (loop_done == EVBREAK_ONE)
2099 loop_done = EVUNLOOP_CANCEL; 3035 loop_done = EVBREAK_CANCEL;
3036
3037#if EV_FEATURE_API
3038 --loop_depth;
3039#endif
2100} 3040}
2101 3041
2102void 3042void
2103ev_unloop (EV_P_ int how) 3043ev_break (EV_P_ int how)
2104{ 3044{
2105 loop_done = how; 3045 loop_done = how;
2106} 3046}
2107 3047
2108void 3048void
… …
2133ev_resume (EV_P) 3073ev_resume (EV_P)
2134{ 3074{
2135 ev_tstamp mn_prev = mn_now; 3075 ev_tstamp mn_prev = mn_now;
2136 3076
2137 ev_now_update (EV_A); 3077 ev_now_update (EV_A);
2138 printf ("update %f\n", mn_now - mn_prev);//D
2139 timers_reschedule (EV_A_ mn_now - mn_prev); 3078 timers_reschedule (EV_A_ mn_now - mn_prev);
3079#if EV_PERIODIC_ENABLE
3080 /* TODO: really do this? */
2140 periodics_reschedule (EV_A); 3081 periodics_reschedule (EV_A);
3082#endif
2141} 3083}
2142 3084
2143/*****************************************************************************/ 3085/*****************************************************************************/
3086/* singly-linked list management, used when the expected list length is short */
2144 3087
2145inline_size void 3088inline_size void
2146wlist_add (WL *head, WL elem) 3089wlist_add (WL *head, WL elem)
2147{ 3090{
2148 elem->next = *head; 3091 elem->next = *head;
… …
2152inline_size void 3095inline_size void
2153wlist_del (WL *head, WL elem) 3096wlist_del (WL *head, WL elem)
2154{ 3097{
2155 while (*head) 3098 while (*head)
2156 { 3099 {
2157 if (*head == elem) 3100 if (expect_true (*head == elem))
2158 { 3101 {
2159 *head = elem->next; 3102 *head = elem->next;
2160 return; 3103 break;
2161 } 3104 }
2162 3105
2163 head = &(*head)->next; 3106 head = &(*head)->next;
2164 } 3107 }
2165} 3108}
2166 3109
3110/* internal, faster, version of ev_clear_pending */
2167inline_speed void 3111inline_speed void
2168clear_pending (EV_P_ W w) 3112clear_pending (EV_P_ W w)
2169{ 3113{
2170 if (w->pending) 3114 if (w->pending)
2171 { 3115 {
2172 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3116 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2173 w->pending = 0; 3117 w->pending = 0;
2174 } 3118 }
2175} 3119}
2176 3120
2177int 3121int
… …
2181 int pending = w_->pending; 3125 int pending = w_->pending;
2182 3126
2183 if (expect_true (pending)) 3127 if (expect_true (pending))
2184 { 3128 {
2185 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3129 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3130 p->w = (W)&pending_w;
2186 w_->pending = 0; 3131 w_->pending = 0;
2187 p->w = 0;
2188 return p->events; 3132 return p->events;
2189 } 3133 }
2190 else 3134 else
2191 return 0; 3135 return 0;
2192} 3136}
2193 3137
2194inline_size void 3138inline_size void
2195pri_adjust (EV_P_ W w) 3139pri_adjust (EV_P_ W w)
2196{ 3140{
2197 int pri = w->priority; 3141 int pri = ev_priority (w);
2198 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3142 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2199 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3143 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2200 w->priority = pri; 3144 ev_set_priority (w, pri);
2201} 3145}
2202 3146
2203inline_speed void 3147inline_speed void
2204ev_start (EV_P_ W w, int active) 3148ev_start (EV_P_ W w, int active)
2205{ 3149{
… …
2224 3168
2225 if (expect_false (ev_is_active (w))) 3169 if (expect_false (ev_is_active (w)))
2226 return; 3170 return;
2227 3171
2228 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 3172 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)))); 3173 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2230 3174
2231 EV_FREQUENT_CHECK; 3175 EV_FREQUENT_CHECK;
2232 3176
2233 ev_start (EV_A_ (W)w, 1); 3177 ev_start (EV_A_ (W)w, 1);
2234 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3178 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2235 wlist_add (&anfds[fd].head, (WL)w); 3179 wlist_add (&anfds[fd].head, (WL)w);
2236 3180
2237 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 3181 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2238 w->events &= ~EV__IOFDSET; 3182 w->events &= ~EV__IOFDSET;
2239 3183
2240 EV_FREQUENT_CHECK; 3184 EV_FREQUENT_CHECK;
2241} 3185}
2242 3186
… …
2252 EV_FREQUENT_CHECK; 3196 EV_FREQUENT_CHECK;
2253 3197
2254 wlist_del (&anfds[w->fd].head, (WL)w); 3198 wlist_del (&anfds[w->fd].head, (WL)w);
2255 ev_stop (EV_A_ (W)w); 3199 ev_stop (EV_A_ (W)w);
2256 3200
2257 fd_change (EV_A_ w->fd, 1); 3201 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2258 3202
2259 EV_FREQUENT_CHECK; 3203 EV_FREQUENT_CHECK;
2260} 3204}
2261 3205
2262void noinline 3206void noinline
… …
2304 timers [active] = timers [timercnt + HEAP0]; 3248 timers [active] = timers [timercnt + HEAP0];
2305 adjustheap (timers, timercnt, active); 3249 adjustheap (timers, timercnt, active);
2306 } 3250 }
2307 } 3251 }
2308 3252
2309 EV_FREQUENT_CHECK;
2310
2311 ev_at (w) -= mn_now; 3253 ev_at (w) -= mn_now;
2312 3254
2313 ev_stop (EV_A_ (W)w); 3255 ev_stop (EV_A_ (W)w);
3256
3257 EV_FREQUENT_CHECK;
2314} 3258}
2315 3259
2316void noinline 3260void noinline
2317ev_timer_again (EV_P_ ev_timer *w) 3261ev_timer_again (EV_P_ ev_timer *w)
2318{ 3262{
… …
2336 } 3280 }
2337 3281
2338 EV_FREQUENT_CHECK; 3282 EV_FREQUENT_CHECK;
2339} 3283}
2340 3284
3285ev_tstamp
3286ev_timer_remaining (EV_P_ ev_timer *w)
3287{
3288 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3289}
3290
2341#if EV_PERIODIC_ENABLE 3291#if EV_PERIODIC_ENABLE
2342void noinline 3292void noinline
2343ev_periodic_start (EV_P_ ev_periodic *w) 3293ev_periodic_start (EV_P_ ev_periodic *w)
2344{ 3294{
2345 if (expect_false (ev_is_active (w))) 3295 if (expect_false (ev_is_active (w)))
… …
2348 if (w->reschedule_cb) 3298 if (w->reschedule_cb)
2349 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3299 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2350 else if (w->interval) 3300 else if (w->interval)
2351 { 3301 {
2352 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3302 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 */ 3303 periodic_recalc (EV_A_ w);
2354 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2355 } 3304 }
2356 else 3305 else
2357 ev_at (w) = w->offset; 3306 ev_at (w) = w->offset;
2358 3307
2359 EV_FREQUENT_CHECK; 3308 EV_FREQUENT_CHECK;
… …
2391 periodics [active] = periodics [periodiccnt + HEAP0]; 3340 periodics [active] = periodics [periodiccnt + HEAP0];
2392 adjustheap (periodics, periodiccnt, active); 3341 adjustheap (periodics, periodiccnt, active);
2393 } 3342 }
2394 } 3343 }
2395 3344
2396 EV_FREQUENT_CHECK;
2397
2398 ev_stop (EV_A_ (W)w); 3345 ev_stop (EV_A_ (W)w);
3346
3347 EV_FREQUENT_CHECK;
2399} 3348}
2400 3349
2401void noinline 3350void noinline
2402ev_periodic_again (EV_P_ ev_periodic *w) 3351ev_periodic_again (EV_P_ ev_periodic *w)
2403{ 3352{
… …
2409 3358
2410#ifndef SA_RESTART 3359#ifndef SA_RESTART
2411# define SA_RESTART 0 3360# define SA_RESTART 0
2412#endif 3361#endif
2413 3362
3363#if EV_SIGNAL_ENABLE
3364
2414void noinline 3365void noinline
2415ev_signal_start (EV_P_ ev_signal *w) 3366ev_signal_start (EV_P_ ev_signal *w)
2416{ 3367{
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))) 3368 if (expect_false (ev_is_active (w)))
2421 return; 3369 return;
2422 3370
2423 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3371 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2424 3372
2425 evpipe_init (EV_A); 3373#if EV_MULTIPLICITY
3374 assert (("libev: a signal must not be attached to two different loops",
3375 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2426 3376
2427 EV_FREQUENT_CHECK; 3377 signals [w->signum - 1].loop = EV_A;
3378#endif
2428 3379
3380 EV_FREQUENT_CHECK;
3381
3382#if EV_USE_SIGNALFD
3383 if (sigfd == -2)
2429 { 3384 {
2430#ifndef _WIN32 3385 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2431 sigset_t full, prev; 3386 if (sigfd < 0 && errno == EINVAL)
2432 sigfillset (&full); 3387 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2433 sigprocmask (SIG_SETMASK, &full, &prev);
2434#endif
2435 3388
2436 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3389 if (sigfd >= 0)
3390 {
3391 fd_intern (sigfd); /* doing it twice will not hurt */
2437 3392
2438#ifndef _WIN32 3393 sigemptyset (&sigfd_set);
2439 sigprocmask (SIG_SETMASK, &prev, 0); 3394
2440#endif 3395 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3396 ev_set_priority (&sigfd_w, EV_MAXPRI);
3397 ev_io_start (EV_A_ &sigfd_w);
3398 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3399 }
2441 } 3400 }
3401
3402 if (sigfd >= 0)
3403 {
3404 /* TODO: check .head */
3405 sigaddset (&sigfd_set, w->signum);
3406 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3407
3408 signalfd (sigfd, &sigfd_set, 0);
3409 }
3410#endif
2442 3411
2443 ev_start (EV_A_ (W)w, 1); 3412 ev_start (EV_A_ (W)w, 1);
2444 wlist_add (&signals [w->signum - 1].head, (WL)w); 3413 wlist_add (&signals [w->signum - 1].head, (WL)w);
2445 3414
2446 if (!((WL)w)->next) 3415 if (!((WL)w)->next)
3416# if EV_USE_SIGNALFD
3417 if (sigfd < 0) /*TODO*/
3418# endif
2447 { 3419 {
2448#if _WIN32 3420# ifdef _WIN32
3421 evpipe_init (EV_A);
3422
2449 signal (w->signum, ev_sighandler); 3423 signal (w->signum, ev_sighandler);
2450#else 3424# else
2451 struct sigaction sa; 3425 struct sigaction sa;
3426
3427 evpipe_init (EV_A);
3428
2452 sa.sa_handler = ev_sighandler; 3429 sa.sa_handler = ev_sighandler;
2453 sigfillset (&sa.sa_mask); 3430 sigfillset (&sa.sa_mask);
2454 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3431 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2455 sigaction (w->signum, &sa, 0); 3432 sigaction (w->signum, &sa, 0);
3433
3434 if (origflags & EVFLAG_NOSIGMASK)
3435 {
3436 sigemptyset (&sa.sa_mask);
3437 sigaddset (&sa.sa_mask, w->signum);
3438 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3439 }
2456#endif 3440#endif
2457 } 3441 }
2458 3442
2459 EV_FREQUENT_CHECK; 3443 EV_FREQUENT_CHECK;
2460} 3444}
2461 3445
2462void noinline 3446void noinline
… …
2470 3454
2471 wlist_del (&signals [w->signum - 1].head, (WL)w); 3455 wlist_del (&signals [w->signum - 1].head, (WL)w);
2472 ev_stop (EV_A_ (W)w); 3456 ev_stop (EV_A_ (W)w);
2473 3457
2474 if (!signals [w->signum - 1].head) 3458 if (!signals [w->signum - 1].head)
3459 {
3460#if EV_MULTIPLICITY
3461 signals [w->signum - 1].loop = 0; /* unattach from signal */
3462#endif
3463#if EV_USE_SIGNALFD
3464 if (sigfd >= 0)
3465 {
3466 sigset_t ss;
3467
3468 sigemptyset (&ss);
3469 sigaddset (&ss, w->signum);
3470 sigdelset (&sigfd_set, w->signum);
3471
3472 signalfd (sigfd, &sigfd_set, 0);
3473 sigprocmask (SIG_UNBLOCK, &ss, 0);
3474 }
3475 else
3476#endif
2475 signal (w->signum, SIG_DFL); 3477 signal (w->signum, SIG_DFL);
3478 }
2476 3479
2477 EV_FREQUENT_CHECK; 3480 EV_FREQUENT_CHECK;
2478} 3481}
3482
3483#endif
3484
3485#if EV_CHILD_ENABLE
2479 3486
2480void 3487void
2481ev_child_start (EV_P_ ev_child *w) 3488ev_child_start (EV_P_ ev_child *w)
2482{ 3489{
2483#if EV_MULTIPLICITY 3490#if EV_MULTIPLICITY
… …
2487 return; 3494 return;
2488 3495
2489 EV_FREQUENT_CHECK; 3496 EV_FREQUENT_CHECK;
2490 3497
2491 ev_start (EV_A_ (W)w, 1); 3498 ev_start (EV_A_ (W)w, 1);
2492 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3499 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2493 3500
2494 EV_FREQUENT_CHECK; 3501 EV_FREQUENT_CHECK;
2495} 3502}
2496 3503
2497void 3504void
… …
2501 if (expect_false (!ev_is_active (w))) 3508 if (expect_false (!ev_is_active (w)))
2502 return; 3509 return;
2503 3510
2504 EV_FREQUENT_CHECK; 3511 EV_FREQUENT_CHECK;
2505 3512
2506 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3513 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2507 ev_stop (EV_A_ (W)w); 3514 ev_stop (EV_A_ (W)w);
2508 3515
2509 EV_FREQUENT_CHECK; 3516 EV_FREQUENT_CHECK;
2510} 3517}
3518
3519#endif
2511 3520
2512#if EV_STAT_ENABLE 3521#if EV_STAT_ENABLE
2513 3522
2514# ifdef _WIN32 3523# ifdef _WIN32
2515# undef lstat 3524# undef lstat
… …
2521#define MIN_STAT_INTERVAL 0.1074891 3530#define MIN_STAT_INTERVAL 0.1074891
2522 3531
2523static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3532static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2524 3533
2525#if EV_USE_INOTIFY 3534#if EV_USE_INOTIFY
2526# define EV_INOTIFY_BUFSIZE 8192 3535
3536/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3537# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2527 3538
2528static void noinline 3539static void noinline
2529infy_add (EV_P_ ev_stat *w) 3540infy_add (EV_P_ ev_stat *w)
2530{ 3541{
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); 3542 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 3543
2533 if (w->wd < 0) 3544 if (w->wd >= 0)
3545 {
3546 struct statfs sfs;
3547
3548 /* now local changes will be tracked by inotify, but remote changes won't */
3549 /* unless the filesystem is known to be local, we therefore still poll */
3550 /* also do poll on <2.6.25, but with normal frequency */
3551
3552 if (!fs_2625)
3553 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3554 else if (!statfs (w->path, &sfs)
3555 && (sfs.f_type == 0x1373 /* devfs */
3556 || sfs.f_type == 0xEF53 /* ext2/3 */
3557 || sfs.f_type == 0x3153464a /* jfs */
3558 || sfs.f_type == 0x52654973 /* reiser3 */
3559 || sfs.f_type == 0x01021994 /* tempfs */
3560 || sfs.f_type == 0x58465342 /* xfs */))
3561 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3562 else
3563 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2534 { 3564 }
3565 else
3566 {
3567 /* can't use inotify, continue to stat */
2535 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3568 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 3569
2538 /* monitor some parent directory for speedup hints */ 3570 /* 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, */ 3571 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2540 /* but an efficiency issue only */ 3572 /* but an efficiency issue only */
2541 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3573 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2542 { 3574 {
2543 char path [4096]; 3575 char path [4096];
… …
2553 if (!pend || pend == path) 3585 if (!pend || pend == path)
2554 break; 3586 break;
2555 3587
2556 *pend = 0; 3588 *pend = 0;
2557 w->wd = inotify_add_watch (fs_fd, path, mask); 3589 w->wd = inotify_add_watch (fs_fd, path, mask);
2558 } 3590 }
2559 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3591 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2560 } 3592 }
2561 } 3593 }
2562 3594
2563 if (w->wd >= 0) 3595 if (w->wd >= 0)
2564 {
2565 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3596 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2566 3597
2567 /* now local changes will be tracked by inotify, but remote changes won't */ 3598 /* now re-arm timer, if required */
2568 /* unless the filesystem it known to be local, we therefore still poll */ 3599 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); 3600 ev_timer_again (EV_A_ &w->timer);
2583 } 3601 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2584} 3602}
2585 3603
2586static void noinline 3604static void noinline
2587infy_del (EV_P_ ev_stat *w) 3605infy_del (EV_P_ ev_stat *w)
2588{ 3606{
… …
2591 3609
2592 if (wd < 0) 3610 if (wd < 0)
2593 return; 3611 return;
2594 3612
2595 w->wd = -2; 3613 w->wd = -2;
2596 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3614 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2597 wlist_del (&fs_hash [slot].head, (WL)w); 3615 wlist_del (&fs_hash [slot].head, (WL)w);
2598 3616
2599 /* remove this watcher, if others are watching it, they will rearm */ 3617 /* remove this watcher, if others are watching it, they will rearm */
2600 inotify_rm_watch (fs_fd, wd); 3618 inotify_rm_watch (fs_fd, wd);
2601} 3619}
… …
2603static void noinline 3621static void noinline
2604infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3622infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2605{ 3623{
2606 if (slot < 0) 3624 if (slot < 0)
2607 /* overflow, need to check for all hash slots */ 3625 /* overflow, need to check for all hash slots */
2608 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3626 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2609 infy_wd (EV_A_ slot, wd, ev); 3627 infy_wd (EV_A_ slot, wd, ev);
2610 else 3628 else
2611 { 3629 {
2612 WL w_; 3630 WL w_;
2613 3631
2614 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3632 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2615 { 3633 {
2616 ev_stat *w = (ev_stat *)w_; 3634 ev_stat *w = (ev_stat *)w_;
2617 w_ = w_->next; /* lets us remove this watcher and all before it */ 3635 w_ = w_->next; /* lets us remove this watcher and all before it */
2618 3636
2619 if (w->wd == wd || wd == -1) 3637 if (w->wd == wd || wd == -1)
2620 { 3638 {
2621 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3639 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2622 { 3640 {
2623 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3641 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2624 w->wd = -1; 3642 w->wd = -1;
2625 infy_add (EV_A_ w); /* re-add, no matter what */ 3643 infy_add (EV_A_ w); /* re-add, no matter what */
2626 } 3644 }
2627 3645
2628 stat_timer_cb (EV_A_ &w->timer, 0); 3646 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2633 3651
2634static void 3652static void
2635infy_cb (EV_P_ ev_io *w, int revents) 3653infy_cb (EV_P_ ev_io *w, int revents)
2636{ 3654{
2637 char buf [EV_INOTIFY_BUFSIZE]; 3655 char buf [EV_INOTIFY_BUFSIZE];
2638 struct inotify_event *ev = (struct inotify_event *)buf;
2639 int ofs; 3656 int ofs;
2640 int len = read (fs_fd, buf, sizeof (buf)); 3657 int len = read (fs_fd, buf, sizeof (buf));
2641 3658
2642 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3659 for (ofs = 0; ofs < len; )
3660 {
3661 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2643 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3662 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3663 ofs += sizeof (struct inotify_event) + ev->len;
3664 }
2644} 3665}
2645 3666
2646inline_size void 3667inline_size void ecb_cold
2647check_2625 (EV_P) 3668ev_check_2625 (EV_P)
2648{ 3669{
2649 /* kernels < 2.6.25 are borked 3670 /* kernels < 2.6.25 are borked
2650 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3671 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2651 */ 3672 */
2652 struct utsname buf; 3673 if (ev_linux_version () < 0x020619)
2653 int major, minor, micro;
2654
2655 if (uname (&buf))
2656 return; 3674 return;
2657 3675
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; 3676 fs_2625 = 1;
3677}
3678
3679inline_size int
3680infy_newfd (void)
3681{
3682#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3683 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3684 if (fd >= 0)
3685 return fd;
3686#endif
3687 return inotify_init ();
2667} 3688}
2668 3689
2669inline_size void 3690inline_size void
2670infy_init (EV_P) 3691infy_init (EV_P)
2671{ 3692{
2672 if (fs_fd != -2) 3693 if (fs_fd != -2)
2673 return; 3694 return;
2674 3695
2675 fs_fd = -1; 3696 fs_fd = -1;
2676 3697
2677 check_2625 (EV_A); 3698 ev_check_2625 (EV_A);
2678 3699
2679 fs_fd = inotify_init (); 3700 fs_fd = infy_newfd ();
2680 3701
2681 if (fs_fd >= 0) 3702 if (fs_fd >= 0)
2682 { 3703 {
3704 fd_intern (fs_fd);
2683 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3705 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2684 ev_set_priority (&fs_w, EV_MAXPRI); 3706 ev_set_priority (&fs_w, EV_MAXPRI);
2685 ev_io_start (EV_A_ &fs_w); 3707 ev_io_start (EV_A_ &fs_w);
3708 ev_unref (EV_A);
2686 } 3709 }
2687} 3710}
2688 3711
2689inline_size void 3712inline_size void
2690infy_fork (EV_P) 3713infy_fork (EV_P)
… …
2692 int slot; 3715 int slot;
2693 3716
2694 if (fs_fd < 0) 3717 if (fs_fd < 0)
2695 return; 3718 return;
2696 3719
3720 ev_ref (EV_A);
3721 ev_io_stop (EV_A_ &fs_w);
2697 close (fs_fd); 3722 close (fs_fd);
2698 fs_fd = inotify_init (); 3723 fs_fd = infy_newfd ();
2699 3724
3725 if (fs_fd >= 0)
3726 {
3727 fd_intern (fs_fd);
3728 ev_io_set (&fs_w, fs_fd, EV_READ);
3729 ev_io_start (EV_A_ &fs_w);
3730 ev_unref (EV_A);
3731 }
3732
2700 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3733 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2701 { 3734 {
2702 WL w_ = fs_hash [slot].head; 3735 WL w_ = fs_hash [slot].head;
2703 fs_hash [slot].head = 0; 3736 fs_hash [slot].head = 0;
2704 3737
2705 while (w_) 3738 while (w_)
… …
2710 w->wd = -1; 3743 w->wd = -1;
2711 3744
2712 if (fs_fd >= 0) 3745 if (fs_fd >= 0)
2713 infy_add (EV_A_ w); /* re-add, no matter what */ 3746 infy_add (EV_A_ w); /* re-add, no matter what */
2714 else 3747 else
3748 {
3749 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3750 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2715 ev_timer_again (EV_A_ &w->timer); 3751 ev_timer_again (EV_A_ &w->timer);
3752 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3753 }
2716 } 3754 }
2717 } 3755 }
2718} 3756}
2719 3757
2720#endif 3758#endif
… …
2737static void noinline 3775static void noinline
2738stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3776stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2739{ 3777{
2740 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3778 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2741 3779
2742 /* we copy this here each the time so that */ 3780 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); 3781 ev_stat_stat (EV_A_ w);
2746 3782
2747 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3783 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2748 if ( 3784 if (
2749 w->prev.st_dev != w->attr.st_dev 3785 prev.st_dev != w->attr.st_dev
2750 || w->prev.st_ino != w->attr.st_ino 3786 || prev.st_ino != w->attr.st_ino
2751 || w->prev.st_mode != w->attr.st_mode 3787 || prev.st_mode != w->attr.st_mode
2752 || w->prev.st_nlink != w->attr.st_nlink 3788 || prev.st_nlink != w->attr.st_nlink
2753 || w->prev.st_uid != w->attr.st_uid 3789 || prev.st_uid != w->attr.st_uid
2754 || w->prev.st_gid != w->attr.st_gid 3790 || prev.st_gid != w->attr.st_gid
2755 || w->prev.st_rdev != w->attr.st_rdev 3791 || prev.st_rdev != w->attr.st_rdev
2756 || w->prev.st_size != w->attr.st_size 3792 || prev.st_size != w->attr.st_size
2757 || w->prev.st_atime != w->attr.st_atime 3793 || prev.st_atime != w->attr.st_atime
2758 || w->prev.st_mtime != w->attr.st_mtime 3794 || prev.st_mtime != w->attr.st_mtime
2759 || w->prev.st_ctime != w->attr.st_ctime 3795 || prev.st_ctime != w->attr.st_ctime
2760 ) { 3796 ) {
3797 /* we only update w->prev on actual differences */
3798 /* in case we test more often than invoke the callback, */
3799 /* to ensure that prev is always different to attr */
3800 w->prev = prev;
3801
2761 #if EV_USE_INOTIFY 3802 #if EV_USE_INOTIFY
2762 if (fs_fd >= 0) 3803 if (fs_fd >= 0)
2763 { 3804 {
2764 infy_del (EV_A_ w); 3805 infy_del (EV_A_ w);
2765 infy_add (EV_A_ w); 3806 infy_add (EV_A_ w);
… …
2790 3831
2791 if (fs_fd >= 0) 3832 if (fs_fd >= 0)
2792 infy_add (EV_A_ w); 3833 infy_add (EV_A_ w);
2793 else 3834 else
2794#endif 3835#endif
3836 {
2795 ev_timer_again (EV_A_ &w->timer); 3837 ev_timer_again (EV_A_ &w->timer);
3838 ev_unref (EV_A);
3839 }
2796 3840
2797 ev_start (EV_A_ (W)w, 1); 3841 ev_start (EV_A_ (W)w, 1);
2798 3842
2799 EV_FREQUENT_CHECK; 3843 EV_FREQUENT_CHECK;
2800} 3844}
… …
2809 EV_FREQUENT_CHECK; 3853 EV_FREQUENT_CHECK;
2810 3854
2811#if EV_USE_INOTIFY 3855#if EV_USE_INOTIFY
2812 infy_del (EV_A_ w); 3856 infy_del (EV_A_ w);
2813#endif 3857#endif
3858
3859 if (ev_is_active (&w->timer))
3860 {
3861 ev_ref (EV_A);
2814 ev_timer_stop (EV_A_ &w->timer); 3862 ev_timer_stop (EV_A_ &w->timer);
3863 }
2815 3864
2816 ev_stop (EV_A_ (W)w); 3865 ev_stop (EV_A_ (W)w);
2817 3866
2818 EV_FREQUENT_CHECK; 3867 EV_FREQUENT_CHECK;
2819} 3868}
… …
2864 3913
2865 EV_FREQUENT_CHECK; 3914 EV_FREQUENT_CHECK;
2866} 3915}
2867#endif 3916#endif
2868 3917
3918#if EV_PREPARE_ENABLE
2869void 3919void
2870ev_prepare_start (EV_P_ ev_prepare *w) 3920ev_prepare_start (EV_P_ ev_prepare *w)
2871{ 3921{
2872 if (expect_false (ev_is_active (w))) 3922 if (expect_false (ev_is_active (w)))
2873 return; 3923 return;
… …
2899 3949
2900 ev_stop (EV_A_ (W)w); 3950 ev_stop (EV_A_ (W)w);
2901 3951
2902 EV_FREQUENT_CHECK; 3952 EV_FREQUENT_CHECK;
2903} 3953}
3954#endif
2904 3955
3956#if EV_CHECK_ENABLE
2905void 3957void
2906ev_check_start (EV_P_ ev_check *w) 3958ev_check_start (EV_P_ ev_check *w)
2907{ 3959{
2908 if (expect_false (ev_is_active (w))) 3960 if (expect_false (ev_is_active (w)))
2909 return; 3961 return;
… …
2935 3987
2936 ev_stop (EV_A_ (W)w); 3988 ev_stop (EV_A_ (W)w);
2937 3989
2938 EV_FREQUENT_CHECK; 3990 EV_FREQUENT_CHECK;
2939} 3991}
3992#endif
2940 3993
2941#if EV_EMBED_ENABLE 3994#if EV_EMBED_ENABLE
2942void noinline 3995void noinline
2943ev_embed_sweep (EV_P_ ev_embed *w) 3996ev_embed_sweep (EV_P_ ev_embed *w)
2944{ 3997{
2945 ev_loop (w->other, EVLOOP_NONBLOCK); 3998 ev_run (w->other, EVRUN_NOWAIT);
2946} 3999}
2947 4000
2948static void 4001static void
2949embed_io_cb (EV_P_ ev_io *io, int revents) 4002embed_io_cb (EV_P_ ev_io *io, int revents)
2950{ 4003{
2951 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4004 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2952 4005
2953 if (ev_cb (w)) 4006 if (ev_cb (w))
2954 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4007 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2955 else 4008 else
2956 ev_loop (w->other, EVLOOP_NONBLOCK); 4009 ev_run (w->other, EVRUN_NOWAIT);
2957} 4010}
2958 4011
2959static void 4012static void
2960embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4013embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2961{ 4014{
2962 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4015 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2963 4016
2964 { 4017 {
2965 struct ev_loop *loop = w->other; 4018 EV_P = w->other;
2966 4019
2967 while (fdchangecnt) 4020 while (fdchangecnt)
2968 { 4021 {
2969 fd_reify (EV_A); 4022 fd_reify (EV_A);
2970 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4023 ev_run (EV_A_ EVRUN_NOWAIT);
2971 } 4024 }
2972 } 4025 }
2973} 4026}
2974 4027
2975static void 4028static void
… …
2978 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4031 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2979 4032
2980 ev_embed_stop (EV_A_ w); 4033 ev_embed_stop (EV_A_ w);
2981 4034
2982 { 4035 {
2983 struct ev_loop *loop = w->other; 4036 EV_P = w->other;
2984 4037
2985 ev_loop_fork (EV_A); 4038 ev_loop_fork (EV_A);
2986 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4039 ev_run (EV_A_ EVRUN_NOWAIT);
2987 } 4040 }
2988 4041
2989 ev_embed_start (EV_A_ w); 4042 ev_embed_start (EV_A_ w);
2990} 4043}
2991 4044
… …
3002{ 4055{
3003 if (expect_false (ev_is_active (w))) 4056 if (expect_false (ev_is_active (w)))
3004 return; 4057 return;
3005 4058
3006 { 4059 {
3007 struct ev_loop *loop = w->other; 4060 EV_P = w->other;
3008 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4061 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); 4062 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3010 } 4063 }
3011 4064
3012 EV_FREQUENT_CHECK; 4065 EV_FREQUENT_CHECK;
… …
3039 4092
3040 ev_io_stop (EV_A_ &w->io); 4093 ev_io_stop (EV_A_ &w->io);
3041 ev_prepare_stop (EV_A_ &w->prepare); 4094 ev_prepare_stop (EV_A_ &w->prepare);
3042 ev_fork_stop (EV_A_ &w->fork); 4095 ev_fork_stop (EV_A_ &w->fork);
3043 4096
4097 ev_stop (EV_A_ (W)w);
4098
3044 EV_FREQUENT_CHECK; 4099 EV_FREQUENT_CHECK;
3045} 4100}
3046#endif 4101#endif
3047 4102
3048#if EV_FORK_ENABLE 4103#if EV_FORK_ENABLE
… …
3081 4136
3082 EV_FREQUENT_CHECK; 4137 EV_FREQUENT_CHECK;
3083} 4138}
3084#endif 4139#endif
3085 4140
4141#if EV_CLEANUP_ENABLE
4142void
4143ev_cleanup_start (EV_P_ ev_cleanup *w)
4144{
4145 if (expect_false (ev_is_active (w)))
4146 return;
4147
4148 EV_FREQUENT_CHECK;
4149
4150 ev_start (EV_A_ (W)w, ++cleanupcnt);
4151 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4152 cleanups [cleanupcnt - 1] = w;
4153
4154 /* cleanup watchers should never keep a refcount on the loop */
4155 ev_unref (EV_A);
4156 EV_FREQUENT_CHECK;
4157}
4158
4159void
4160ev_cleanup_stop (EV_P_ ev_cleanup *w)
4161{
4162 clear_pending (EV_A_ (W)w);
4163 if (expect_false (!ev_is_active (w)))
4164 return;
4165
4166 EV_FREQUENT_CHECK;
4167 ev_ref (EV_A);
4168
4169 {
4170 int active = ev_active (w);
4171
4172 cleanups [active - 1] = cleanups [--cleanupcnt];
4173 ev_active (cleanups [active - 1]) = active;
4174 }
4175
4176 ev_stop (EV_A_ (W)w);
4177
4178 EV_FREQUENT_CHECK;
4179}
4180#endif
4181
3086#if EV_ASYNC_ENABLE 4182#if EV_ASYNC_ENABLE
3087void 4183void
3088ev_async_start (EV_P_ ev_async *w) 4184ev_async_start (EV_P_ ev_async *w)
3089{ 4185{
3090 if (expect_false (ev_is_active (w))) 4186 if (expect_false (ev_is_active (w)))
3091 return; 4187 return;
3092 4188
4189 w->sent = 0;
4190
3093 evpipe_init (EV_A); 4191 evpipe_init (EV_A);
3094 4192
3095 EV_FREQUENT_CHECK; 4193 EV_FREQUENT_CHECK;
3096 4194
3097 ev_start (EV_A_ (W)w, ++asynccnt); 4195 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3124 4222
3125void 4223void
3126ev_async_send (EV_P_ ev_async *w) 4224ev_async_send (EV_P_ ev_async *w)
3127{ 4225{
3128 w->sent = 1; 4226 w->sent = 1;
3129 evpipe_write (EV_A_ &gotasync); 4227 evpipe_write (EV_A_ &async_pending);
3130} 4228}
3131#endif 4229#endif
3132 4230
3133/*****************************************************************************/ 4231/*****************************************************************************/
3134 4232
… …
3174{ 4272{
3175 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4273 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3176 4274
3177 if (expect_false (!once)) 4275 if (expect_false (!once))
3178 { 4276 {
3179 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4277 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3180 return; 4278 return;
3181 } 4279 }
3182 4280
3183 once->cb = cb; 4281 once->cb = cb;
3184 once->arg = arg; 4282 once->arg = arg;
… …
3198 } 4296 }
3199} 4297}
3200 4298
3201/*****************************************************************************/ 4299/*****************************************************************************/
3202 4300
3203#if 0 4301#if EV_WALK_ENABLE
3204void 4302void ecb_cold
3205ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4303ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3206{ 4304{
3207 int i, j; 4305 int i, j;
3208 ev_watcher_list *wl, *wn; 4306 ev_watcher_list *wl, *wn;
3209 4307
… …
3224#if EV_USE_INOTIFY 4322#if EV_USE_INOTIFY
3225 if (ev_cb ((ev_io *)wl) == infy_cb) 4323 if (ev_cb ((ev_io *)wl) == infy_cb)
3226 ; 4324 ;
3227 else 4325 else
3228#endif 4326#endif
3229 if ((ev_io *)wl != &pipeev) 4327 if ((ev_io *)wl != &pipe_w)
3230 if (types & EV_IO) 4328 if (types & EV_IO)
3231 cb (EV_A_ EV_IO, wl); 4329 cb (EV_A_ EV_IO, wl);
3232 4330
3233 wl = wn; 4331 wl = wn;
3234 } 4332 }
… …
3253 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4351 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3254#endif 4352#endif
3255 4353
3256#if EV_IDLE_ENABLE 4354#if EV_IDLE_ENABLE
3257 if (types & EV_IDLE) 4355 if (types & EV_IDLE)
3258 for (j = NUMPRI; i--; ) 4356 for (j = NUMPRI; j--; )
3259 for (i = idlecnt [j]; i--; ) 4357 for (i = idlecnt [j]; i--; )
3260 cb (EV_A_ EV_IDLE, idles [j][i]); 4358 cb (EV_A_ EV_IDLE, idles [j][i]);
3261#endif 4359#endif
3262 4360
3263#if EV_FORK_ENABLE 4361#if EV_FORK_ENABLE
… …
3271 if (types & EV_ASYNC) 4369 if (types & EV_ASYNC)
3272 for (i = asynccnt; i--; ) 4370 for (i = asynccnt; i--; )
3273 cb (EV_A_ EV_ASYNC, asyncs [i]); 4371 cb (EV_A_ EV_ASYNC, asyncs [i]);
3274#endif 4372#endif
3275 4373
4374#if EV_PREPARE_ENABLE
3276 if (types & EV_PREPARE) 4375 if (types & EV_PREPARE)
3277 for (i = preparecnt; i--; ) 4376 for (i = preparecnt; i--; )
3278#if EV_EMBED_ENABLE 4377# if EV_EMBED_ENABLE
3279 if (ev_cb (prepares [i]) != embed_prepare_cb) 4378 if (ev_cb (prepares [i]) != embed_prepare_cb)
3280#endif 4379# endif
3281 cb (EV_A_ EV_PREPARE, prepares [i]); 4380 cb (EV_A_ EV_PREPARE, prepares [i]);
4381#endif
3282 4382
4383#if EV_CHECK_ENABLE
3283 if (types & EV_CHECK) 4384 if (types & EV_CHECK)
3284 for (i = checkcnt; i--; ) 4385 for (i = checkcnt; i--; )
3285 cb (EV_A_ EV_CHECK, checks [i]); 4386 cb (EV_A_ EV_CHECK, checks [i]);
4387#endif
3286 4388
4389#if EV_SIGNAL_ENABLE
3287 if (types & EV_SIGNAL) 4390 if (types & EV_SIGNAL)
3288 for (i = 0; i < signalmax; ++i) 4391 for (i = 0; i < EV_NSIG - 1; ++i)
3289 for (wl = signals [i].head; wl; ) 4392 for (wl = signals [i].head; wl; )
3290 { 4393 {
3291 wn = wl->next; 4394 wn = wl->next;
3292 cb (EV_A_ EV_SIGNAL, wl); 4395 cb (EV_A_ EV_SIGNAL, wl);
3293 wl = wn; 4396 wl = wn;
3294 } 4397 }
4398#endif
3295 4399
4400#if EV_CHILD_ENABLE
3296 if (types & EV_CHILD) 4401 if (types & EV_CHILD)
3297 for (i = EV_PID_HASHSIZE; i--; ) 4402 for (i = (EV_PID_HASHSIZE); i--; )
3298 for (wl = childs [i]; wl; ) 4403 for (wl = childs [i]; wl; )
3299 { 4404 {
3300 wn = wl->next; 4405 wn = wl->next;
3301 cb (EV_A_ EV_CHILD, wl); 4406 cb (EV_A_ EV_CHILD, wl);
3302 wl = wn; 4407 wl = wn;
3303 } 4408 }
4409#endif
3304/* EV_STAT 0x00001000 /* stat data changed */ 4410/* EV_STAT 0x00001000 /* stat data changed */
3305/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4411/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3306} 4412}
3307#endif 4413#endif
3308 4414
3309#if EV_MULTIPLICITY 4415#if EV_MULTIPLICITY
3310 #include "ev_wrap.h" 4416 #include "ev_wrap.h"
3311#endif 4417#endif
3312 4418
3313#ifdef __cplusplus
3314}
3315#endif
3316

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines