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Comparing libev/ev.c (file contents):
Revision 1.259 by root, Mon Sep 8 13:14:23 2008 UTC vs.
Revision 1.398 by root, Sun Sep 25 21:27:35 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 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
51 47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
53
54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME
58# define EV_USE_REALTIME 0
59# endif
60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1
62# endif
63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL)
65# define EV_USE_CLOCK_SYSCALL 0
66# endif
67
52# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
55# endif 71# endif
56# ifndef EV_USE_REALTIME 72# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 73# define EV_USE_REALTIME 0
58# endif 74# endif
59# else 75# else
60# ifndef EV_USE_MONOTONIC 76# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 77# define EV_USE_MONOTONIC 0
62# endif 78# endif
63# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
65# endif 81# endif
66# endif 82# endif
67 83
84# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
71# else 88# else
89# undef EV_USE_NANOSLEEP
72# 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
73# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
74# endif 100# endif
75 101
102# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 105# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 106# else
107# undef EV_USE_POLL
88# define EV_USE_POLL 0 108# define EV_USE_POLL 0
89# endif
90# endif 109# endif
91 110
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
95# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
98# endif 118# endif
99 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
106# endif 127# endif
107 128
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
111# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
114# endif 136# endif
115 137
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
122# endif 145# endif
123 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# 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
130# endif 163# endif
131 164
132#endif 165#endif
133 166
134#include <math.h>
135#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
136#include <fcntl.h> 169#include <fcntl.h>
137#include <stddef.h> 170#include <stddef.h>
138 171
139#include <stdio.h> 172#include <stdio.h>
140 173
141#include <assert.h> 174#include <assert.h>
142#include <errno.h> 175#include <errno.h>
143#include <sys/types.h> 176#include <sys/types.h>
144#include <time.h> 177#include <time.h>
178#include <limits.h>
145 179
146#include <signal.h> 180#include <signal.h>
147 181
148#ifdef EV_H 182#ifdef EV_H
149# include EV_H 183# include EV_H
150#else 184#else
151# include "ev.h" 185# include "ev.h"
152#endif 186#endif
187
188EV_CPP(extern "C" {)
153 189
154#ifndef _WIN32 190#ifndef _WIN32
155# include <sys/time.h> 191# include <sys/time.h>
156# include <sys/wait.h> 192# include <sys/wait.h>
157# include <unistd.h> 193# include <unistd.h>
… …
160# define WIN32_LEAN_AND_MEAN 196# define WIN32_LEAN_AND_MEAN
161# include <windows.h> 197# include <windows.h>
162# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
163# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
164# endif 200# endif
201# undef EV_AVOID_STDIO
165#endif 202#endif
203
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
166 211
167/* this block tries to deduce configuration from header-defined symbols and defaults */ 212/* this block tries to deduce configuration from header-defined symbols and defaults */
213
214/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG)
216/* use what's provided */
217#elif defined (NSIG)
218# define EV_NSIG (NSIG)
219#elif defined(_NSIG)
220# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX)
222# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX)
224# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX)
226# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG)
228# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG)
230# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE)
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig)
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else
236# error "unable to find value for NSIG, please report"
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif
241
242#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0
244#endif
245
246#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else
250# define EV_USE_CLOCK_SYSCALL 0
251# endif
252#endif
168 253
169#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 256# define EV_USE_MONOTONIC EV_FEATURE_OS
172# else 257# else
173# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
174# endif 259# endif
175#endif 260#endif
176 261
177#ifndef EV_USE_REALTIME 262#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 264#endif
180 265
181#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 267# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 268# define EV_USE_NANOSLEEP EV_FEATURE_OS
184# else 269# else
185# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
186# endif 271# endif
187#endif 272#endif
188 273
189#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
190# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
191#endif 276#endif
192 277
193#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
194# ifdef _WIN32 279# ifdef _WIN32
195# define EV_USE_POLL 0 280# define EV_USE_POLL 0
196# else 281# else
197# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
198# endif 283# endif
199#endif 284#endif
200 285
201#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
204# else 289# else
205# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
206# endif 291# endif
207#endif 292#endif
208 293
… …
214# define EV_USE_PORT 0 299# define EV_USE_PORT 0
215#endif 300#endif
216 301
217#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
220# else 305# else
221# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
222# endif 307# endif
223#endif 308#endif
224 309
225#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
226# if EV_MINIMAL 311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
227# define EV_PID_HASHSIZE 1
228# else
229# define EV_PID_HASHSIZE 16
230# endif
231#endif 312#endif
232 313
233#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
234# if EV_MINIMAL 315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
235# define EV_INOTIFY_HASHSIZE 1
236# else
237# define EV_INOTIFY_HASHSIZE 16
238# endif
239#endif 316#endif
240 317
241#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
244# else 321# else
245# define EV_USE_EVENTFD 0 322# define EV_USE_EVENTFD 0
323# endif
324#endif
325
326#ifndef EV_USE_SIGNALFD
327# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
328# define EV_USE_SIGNALFD EV_FEATURE_OS
329# else
330# define EV_USE_SIGNALFD 0
246# endif 331# endif
247#endif 332#endif
248 333
249#if 0 /* debugging */ 334#if 0 /* debugging */
250# define EV_VERIFY 3 335# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 336# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 337# define EV_HEAP_CACHE_AT 1
253#endif 338#endif
254 339
255#ifndef EV_VERIFY 340#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL 341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
257#endif 342#endif
258 343
259#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
261#endif 346#endif
262 347
263#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
264# define EV_HEAP_CACHE_AT !EV_MINIMAL 349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif
351
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h>
356# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1
360# else
361# undef EV_USE_CLOCK_SYSCALL
362# define EV_USE_CLOCK_SYSCALL 0
363# endif
265#endif 364#endif
266 365
267/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 366/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
268 373
269#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
270# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
271# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
272#endif 377#endif
… …
280# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
281# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
282#endif 387#endif
283 388
284#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
285# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
286# include <sys/select.h> 392# include <sys/select.h>
287# endif 393# endif
288#endif 394#endif
289 395
290#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
397# include <sys/statfs.h>
291# include <sys/inotify.h> 398# include <sys/inotify.h>
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0
403# endif
292#endif 404#endif
293 405
294#if EV_SELECT_IS_WINSOCKET 406#if EV_SELECT_IS_WINSOCKET
295# include <winsock.h> 407# include <winsock.h>
296#endif 408#endif
297 409
298#if EV_USE_EVENTFD 410#if EV_USE_EVENTFD
299/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
300# include <stdint.h> 412# include <stdint.h>
301# ifdef __cplusplus 413# ifndef EFD_NONBLOCK
302extern "C" { 414# define EFD_NONBLOCK O_NONBLOCK
303# endif 415# endif
304int eventfd (unsigned int initval, int flags); 416# ifndef EFD_CLOEXEC
305# ifdef __cplusplus 417# ifdef O_CLOEXEC
306} 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
307# endif 422# endif
423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
424#endif
425
426#if EV_USE_SIGNALFD
427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
428# include <stdint.h>
429# ifndef SFD_NONBLOCK
430# define SFD_NONBLOCK O_NONBLOCK
431# endif
432# ifndef SFD_CLOEXEC
433# ifdef O_CLOEXEC
434# define SFD_CLOEXEC O_CLOEXEC
435# else
436# define SFD_CLOEXEC 02000000
437# endif
438# endif
439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
440
441struct signalfd_siginfo
442{
443 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)];
445};
308#endif 446#endif
309 447
310/**/ 448/**/
311 449
312#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
313# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
314#else 452#else
315# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
316#endif 454#endif
317 455
318/* 456/*
319 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
320 * It is added to ev_rt_now when scheduling periodics
321 * to ensure progress, time-wise, even when rounding
322 * errors are against us.
323 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
324 * Better solutions welcome.
325 */ 459 */
326#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
327 462
328#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
329#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
330/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
331 465
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
468
469/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ECB.H BEGIN */
471/*
472 * libecb - http://software.schmorp.de/pkg/libecb
473 *
474 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de>
475 * Copyright (©) 2011 Emanuele Giaquinta
476 * All rights reserved.
477 *
478 * Redistribution and use in source and binary forms, with or without modifica-
479 * tion, are permitted provided that the following conditions are met:
480 *
481 * 1. Redistributions of source code must retain the above copyright notice,
482 * this list of conditions and the following disclaimer.
483 *
484 * 2. Redistributions in binary form must reproduce the above copyright
485 * notice, this list of conditions and the following disclaimer in the
486 * documentation and/or other materials provided with the distribution.
487 *
488 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
489 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
490 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
491 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
492 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
493 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
494 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
495 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
496 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
497 * OF THE POSSIBILITY OF SUCH DAMAGE.
498 */
499
500#ifndef ECB_H
501#define ECB_H
502
503#ifdef _WIN32
504 typedef signed char int8_t;
505 typedef unsigned char uint8_t;
506 typedef signed short int16_t;
507 typedef unsigned short uint16_t;
508 typedef signed int int32_t;
509 typedef unsigned int uint32_t;
332#if __GNUC__ >= 4 510 #if __GNUC__
333# define expect(expr,value) __builtin_expect ((expr),(value)) 511 typedef signed long long int64_t;
334# define noinline __attribute__ ((noinline)) 512 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t;
516 #endif
335#else 517#else
336# define expect(expr,value) (expr) 518 #include <inttypes.h>
337# define noinline
338# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
339# define inline
340# endif 519#endif
520
521/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so.
525 * we try to detect these and simply assume they are not gcc - if they have
526 * an issue with that they should have done it right in the first place.
527 */
528#ifndef ECB_GCC_VERSION
529 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
530 #define ECB_GCC_VERSION(major,minor) 0
531 #else
532 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
341#endif 533 #endif
534#endif
342 535
536/*****************************************************************************/
537
538/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
539/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
540
541#if ECB_NO_THREADS || ECB_NO_SMP
542 #define ECB_MEMORY_FENCE do { } while (0)
543#endif
544
545#ifndef ECB_MEMORY_FENCE
546 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__)
547 #if __i386__
548 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
549 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
550 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
551 #elif __amd64
552 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
553 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
554 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
555 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
556 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
557 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \
558 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__)
559 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
560 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \
561 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ )
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
563 #endif
564 #endif
565#endif
566
567#ifndef ECB_MEMORY_FENCE
568 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
569 #define ECB_MEMORY_FENCE __sync_synchronize ()
570 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
571 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
572 #elif _MSC_VER >= 1400 /* VC++ 2005 */
573 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
574 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
575 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
576 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
577 #elif defined(_WIN32)
578 #include <WinNT.h>
579 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
580 #endif
581#endif
582
583#ifndef ECB_MEMORY_FENCE
584 #if !ECB_AVOID_PTHREADS
585 /*
586 * if you get undefined symbol references to pthread_mutex_lock,
587 * or failure to find pthread.h, then you should implement
588 * the ECB_MEMORY_FENCE operations for your cpu/compiler
589 * OR provide pthread.h and link against the posix thread library
590 * of your system.
591 */
592 #include <pthread.h>
593 #define ECB_NEEDS_PTHREADS 1
594 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
595
596 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
597 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
598 #endif
599#endif
600
601#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
602 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
603#endif
604
605#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
606 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
607#endif
608
609/*****************************************************************************/
610
611#define ECB_C99 (__STDC_VERSION__ >= 199901L)
612
613#if __cplusplus
614 #define ecb_inline static inline
615#elif ECB_GCC_VERSION(2,5)
616 #define ecb_inline static __inline__
617#elif ECB_C99
618 #define ecb_inline static inline
619#else
620 #define ecb_inline static
621#endif
622
623#if ECB_GCC_VERSION(3,3)
624 #define ecb_restrict __restrict__
625#elif ECB_C99
626 #define ecb_restrict restrict
627#else
628 #define ecb_restrict
629#endif
630
631typedef int ecb_bool;
632
633#define ECB_CONCAT_(a, b) a ## b
634#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
635#define ECB_STRINGIFY_(a) # a
636#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
637
638#define ecb_function_ ecb_inline
639
640#if ECB_GCC_VERSION(3,1)
641 #define ecb_attribute(attrlist) __attribute__(attrlist)
642 #define ecb_is_constant(expr) __builtin_constant_p (expr)
643 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
644 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
645#else
646 #define ecb_attribute(attrlist)
647 #define ecb_is_constant(expr) 0
648 #define ecb_expect(expr,value) (expr)
649 #define ecb_prefetch(addr,rw,locality)
650#endif
651
652/* no emulation for ecb_decltype */
653#if ECB_GCC_VERSION(4,5)
654 #define ecb_decltype(x) __decltype(x)
655#elif ECB_GCC_VERSION(3,0)
656 #define ecb_decltype(x) __typeof(x)
657#endif
658
659#define ecb_noinline ecb_attribute ((__noinline__))
660#define ecb_noreturn ecb_attribute ((__noreturn__))
661#define ecb_unused ecb_attribute ((__unused__))
662#define ecb_const ecb_attribute ((__const__))
663#define ecb_pure ecb_attribute ((__pure__))
664
665#if ECB_GCC_VERSION(4,3)
666 #define ecb_artificial ecb_attribute ((__artificial__))
667 #define ecb_hot ecb_attribute ((__hot__))
668 #define ecb_cold ecb_attribute ((__cold__))
669#else
670 #define ecb_artificial
671 #define ecb_hot
672 #define ecb_cold
673#endif
674
675/* put around conditional expressions if you are very sure that the */
676/* expression is mostly true or mostly false. note that these return */
677/* booleans, not the expression. */
343#define expect_false(expr) expect ((expr) != 0, 0) 678#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
344#define expect_true(expr) expect ((expr) != 0, 1) 679#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
680/* for compatibility to the rest of the world */
681#define ecb_likely(expr) ecb_expect_true (expr)
682#define ecb_unlikely(expr) ecb_expect_false (expr)
683
684/* count trailing zero bits and count # of one bits */
685#if ECB_GCC_VERSION(3,4)
686 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
687 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
688 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
689 #define ecb_ctz32(x) __builtin_ctz (x)
690 #define ecb_ctz64(x) __builtin_ctzll (x)
691 #define ecb_popcount32(x) __builtin_popcount (x)
692 /* no popcountll */
693#else
694 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
695 ecb_function_ int
696 ecb_ctz32 (uint32_t x)
697 {
698 int r = 0;
699
700 x &= ~x + 1; /* this isolates the lowest bit */
701
702#if ECB_branchless_on_i386
703 r += !!(x & 0xaaaaaaaa) << 0;
704 r += !!(x & 0xcccccccc) << 1;
705 r += !!(x & 0xf0f0f0f0) << 2;
706 r += !!(x & 0xff00ff00) << 3;
707 r += !!(x & 0xffff0000) << 4;
708#else
709 if (x & 0xaaaaaaaa) r += 1;
710 if (x & 0xcccccccc) r += 2;
711 if (x & 0xf0f0f0f0) r += 4;
712 if (x & 0xff00ff00) r += 8;
713 if (x & 0xffff0000) r += 16;
714#endif
715
716 return r;
717 }
718
719 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
720 ecb_function_ int
721 ecb_ctz64 (uint64_t x)
722 {
723 int shift = x & 0xffffffffU ? 0 : 32;
724 return ecb_ctz32 (x >> shift) + shift;
725 }
726
727 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
728 ecb_function_ int
729 ecb_popcount32 (uint32_t x)
730 {
731 x -= (x >> 1) & 0x55555555;
732 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
733 x = ((x >> 4) + x) & 0x0f0f0f0f;
734 x *= 0x01010101;
735
736 return x >> 24;
737 }
738
739 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
740 ecb_function_ int ecb_ld32 (uint32_t x)
741 {
742 int r = 0;
743
744 if (x >> 16) { x >>= 16; r += 16; }
745 if (x >> 8) { x >>= 8; r += 8; }
746 if (x >> 4) { x >>= 4; r += 4; }
747 if (x >> 2) { x >>= 2; r += 2; }
748 if (x >> 1) { r += 1; }
749
750 return r;
751 }
752
753 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
754 ecb_function_ int ecb_ld64 (uint64_t x)
755 {
756 int r = 0;
757
758 if (x >> 32) { x >>= 32; r += 32; }
759
760 return r + ecb_ld32 (x);
761 }
762#endif
763
764/* popcount64 is only available on 64 bit cpus as gcc builtin */
765/* so for this version we are lazy */
766ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
767ecb_function_ int
768ecb_popcount64 (uint64_t x)
769{
770 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
771}
772
773ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
774ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
775ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
776ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
777ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
778ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
779ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
780ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
781
782ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
783ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
784ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
785ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
786ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
787ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
788ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
789ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
790
791#if ECB_GCC_VERSION(4,3)
792 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
793 #define ecb_bswap32(x) __builtin_bswap32 (x)
794 #define ecb_bswap64(x) __builtin_bswap64 (x)
795#else
796 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
797 ecb_function_ uint16_t
798 ecb_bswap16 (uint16_t x)
799 {
800 return ecb_rotl16 (x, 8);
801 }
802
803 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
804 ecb_function_ uint32_t
805 ecb_bswap32 (uint32_t x)
806 {
807 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
808 }
809
810 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
811 ecb_function_ uint64_t
812 ecb_bswap64 (uint64_t x)
813 {
814 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
815 }
816#endif
817
818#if ECB_GCC_VERSION(4,5)
819 #define ecb_unreachable() __builtin_unreachable ()
820#else
821 /* this seems to work fine, but gcc always emits a warning for it :/ */
822 ecb_function_ void ecb_unreachable (void) ecb_noreturn;
823 ecb_function_ void ecb_unreachable (void) { }
824#endif
825
826/* try to tell the compiler that some condition is definitely true */
827#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
828
829ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
830ecb_function_ unsigned char
831ecb_byteorder_helper (void)
832{
833 const uint32_t u = 0x11223344;
834 return *(unsigned char *)&u;
835}
836
837ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
838ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
839ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
840ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
841
842#if ECB_GCC_VERSION(3,0) || ECB_C99
843 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
844#else
845 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
846#endif
847
848#if __cplusplus
849 template<typename T>
850 static inline T ecb_div_rd (T val, T div)
851 {
852 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
853 }
854 template<typename T>
855 static inline T ecb_div_ru (T val, T div)
856 {
857 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
858 }
859#else
860 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
861 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
862#endif
863
864#if ecb_cplusplus_does_not_suck
865 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
866 template<typename T, int N>
867 static inline int ecb_array_length (const T (&arr)[N])
868 {
869 return N;
870 }
871#else
872 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
873#endif
874
875#endif
876
877/* ECB.H END */
878
879#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
880/* if your architecture doesn't need memory fences, e.g. because it is
881 * single-cpu/core, or if you use libev in a project that doesn't use libev
882 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
883 * libev, in which casess the memory fences become nops.
884 * alternatively, you can remove this #error and link against libpthread,
885 * which will then provide the memory fences.
886 */
887# error "memory fences not defined for your architecture, please report"
888#endif
889
890#ifndef ECB_MEMORY_FENCE
891# define ECB_MEMORY_FENCE do { } while (0)
892# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
893# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
894#endif
895
896#define expect_false(cond) ecb_expect_false (cond)
897#define expect_true(cond) ecb_expect_true (cond)
898#define noinline ecb_noinline
899
345#define inline_size static inline 900#define inline_size ecb_inline
346 901
347#if EV_MINIMAL 902#if EV_FEATURE_CODE
903# define inline_speed ecb_inline
904#else
348# define inline_speed static noinline 905# define inline_speed static noinline
906#endif
907
908#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
909
910#if EV_MINPRI == EV_MAXPRI
911# define ABSPRI(w) (((W)w), 0)
349#else 912#else
350# define inline_speed static inline
351#endif
352
353#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
354#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 913# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
914#endif
355 915
356#define EMPTY /* required for microsofts broken pseudo-c compiler */ 916#define EMPTY /* required for microsofts broken pseudo-c compiler */
357#define EMPTY2(a,b) /* used to suppress some warnings */ 917#define EMPTY2(a,b) /* used to suppress some warnings */
358 918
359typedef ev_watcher *W; 919typedef ev_watcher *W;
… …
361typedef ev_watcher_time *WT; 921typedef ev_watcher_time *WT;
362 922
363#define ev_active(w) ((W)(w))->active 923#define ev_active(w) ((W)(w))->active
364#define ev_at(w) ((WT)(w))->at 924#define ev_at(w) ((WT)(w))->at
365 925
926#if EV_USE_REALTIME
927/* sig_atomic_t is used to avoid per-thread variables or locking but still */
928/* giving it a reasonably high chance of working on typical architectures */
929static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
930#endif
931
366#if EV_USE_MONOTONIC 932#if EV_USE_MONOTONIC
367/* sig_atomic_t is used to avoid per-thread variables or locking but still */
368/* giving it a reasonably high chance of working on typical architetcures */
369static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 933static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
934#endif
935
936#ifndef EV_FD_TO_WIN32_HANDLE
937# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
938#endif
939#ifndef EV_WIN32_HANDLE_TO_FD
940# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
941#endif
942#ifndef EV_WIN32_CLOSE_FD
943# define EV_WIN32_CLOSE_FD(fd) close (fd)
370#endif 944#endif
371 945
372#ifdef _WIN32 946#ifdef _WIN32
373# include "ev_win32.c" 947# include "ev_win32.c"
374#endif 948#endif
375 949
376/*****************************************************************************/ 950/*****************************************************************************/
377 951
952/* define a suitable floor function (only used by periodics atm) */
953
954#if EV_USE_FLOOR
955# include <math.h>
956# define ev_floor(v) floor (v)
957#else
958
959#include <float.h>
960
961/* a floor() replacement function, should be independent of ev_tstamp type */
962static ev_tstamp noinline
963ev_floor (ev_tstamp v)
964{
965 /* the choice of shift factor is not terribly important */
966#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
967 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
968#else
969 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
970#endif
971
972 /* argument too large for an unsigned long? */
973 if (expect_false (v >= shift))
974 {
975 ev_tstamp f;
976
977 if (v == v - 1.)
978 return v; /* very large number */
979
980 f = shift * ev_floor (v * (1. / shift));
981 return f + ev_floor (v - f);
982 }
983
984 /* special treatment for negative args? */
985 if (expect_false (v < 0.))
986 {
987 ev_tstamp f = -ev_floor (-v);
988
989 return f - (f == v ? 0 : 1);
990 }
991
992 /* fits into an unsigned long */
993 return (unsigned long)v;
994}
995
996#endif
997
998/*****************************************************************************/
999
1000#ifdef __linux
1001# include <sys/utsname.h>
1002#endif
1003
1004static unsigned int noinline ecb_cold
1005ev_linux_version (void)
1006{
1007#ifdef __linux
1008 unsigned int v = 0;
1009 struct utsname buf;
1010 int i;
1011 char *p = buf.release;
1012
1013 if (uname (&buf))
1014 return 0;
1015
1016 for (i = 3+1; --i; )
1017 {
1018 unsigned int c = 0;
1019
1020 for (;;)
1021 {
1022 if (*p >= '0' && *p <= '9')
1023 c = c * 10 + *p++ - '0';
1024 else
1025 {
1026 p += *p == '.';
1027 break;
1028 }
1029 }
1030
1031 v = (v << 8) | c;
1032 }
1033
1034 return v;
1035#else
1036 return 0;
1037#endif
1038}
1039
1040/*****************************************************************************/
1041
1042#if EV_AVOID_STDIO
1043static void noinline ecb_cold
1044ev_printerr (const char *msg)
1045{
1046 write (STDERR_FILENO, msg, strlen (msg));
1047}
1048#endif
1049
378static void (*syserr_cb)(const char *msg); 1050static void (*syserr_cb)(const char *msg);
379 1051
380void 1052void ecb_cold
381ev_set_syserr_cb (void (*cb)(const char *msg)) 1053ev_set_syserr_cb (void (*cb)(const char *msg))
382{ 1054{
383 syserr_cb = cb; 1055 syserr_cb = cb;
384} 1056}
385 1057
386static void noinline 1058static void noinline ecb_cold
387syserr (const char *msg) 1059ev_syserr (const char *msg)
388{ 1060{
389 if (!msg) 1061 if (!msg)
390 msg = "(libev) system error"; 1062 msg = "(libev) system error";
391 1063
392 if (syserr_cb) 1064 if (syserr_cb)
393 syserr_cb (msg); 1065 syserr_cb (msg);
394 else 1066 else
395 { 1067 {
1068#if EV_AVOID_STDIO
1069 ev_printerr (msg);
1070 ev_printerr (": ");
1071 ev_printerr (strerror (errno));
1072 ev_printerr ("\n");
1073#else
396 perror (msg); 1074 perror (msg);
1075#endif
397 abort (); 1076 abort ();
398 } 1077 }
399} 1078}
400 1079
401static void * 1080static void *
402ev_realloc_emul (void *ptr, long size) 1081ev_realloc_emul (void *ptr, long size)
403{ 1082{
1083#if __GLIBC__
1084 return realloc (ptr, size);
1085#else
404 /* some systems, notably openbsd and darwin, fail to properly 1086 /* some systems, notably openbsd and darwin, fail to properly
405 * implement realloc (x, 0) (as required by both ansi c-98 and 1087 * implement realloc (x, 0) (as required by both ansi c-89 and
406 * the single unix specification, so work around them here. 1088 * the single unix specification, so work around them here.
407 */ 1089 */
408 1090
409 if (size) 1091 if (size)
410 return realloc (ptr, size); 1092 return realloc (ptr, size);
411 1093
412 free (ptr); 1094 free (ptr);
413 return 0; 1095 return 0;
1096#endif
414} 1097}
415 1098
416static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1099static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
417 1100
418void 1101void ecb_cold
419ev_set_allocator (void *(*cb)(void *ptr, long size)) 1102ev_set_allocator (void *(*cb)(void *ptr, long size))
420{ 1103{
421 alloc = cb; 1104 alloc = cb;
422} 1105}
423 1106
… …
426{ 1109{
427 ptr = alloc (ptr, size); 1110 ptr = alloc (ptr, size);
428 1111
429 if (!ptr && size) 1112 if (!ptr && size)
430 { 1113 {
1114#if EV_AVOID_STDIO
1115 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1116#else
431 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1117 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1118#endif
432 abort (); 1119 abort ();
433 } 1120 }
434 1121
435 return ptr; 1122 return ptr;
436} 1123}
… …
438#define ev_malloc(size) ev_realloc (0, (size)) 1125#define ev_malloc(size) ev_realloc (0, (size))
439#define ev_free(ptr) ev_realloc ((ptr), 0) 1126#define ev_free(ptr) ev_realloc ((ptr), 0)
440 1127
441/*****************************************************************************/ 1128/*****************************************************************************/
442 1129
1130/* set in reify when reification needed */
1131#define EV_ANFD_REIFY 1
1132
1133/* file descriptor info structure */
443typedef struct 1134typedef struct
444{ 1135{
445 WL head; 1136 WL head;
446 unsigned char events; 1137 unsigned char events; /* the events watched for */
1138 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1139 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
447 unsigned char reify; 1140 unsigned char unused;
1141#if EV_USE_EPOLL
1142 unsigned int egen; /* generation counter to counter epoll bugs */
1143#endif
448#if EV_SELECT_IS_WINSOCKET 1144#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
449 SOCKET handle; 1145 SOCKET handle;
450#endif 1146#endif
1147#if EV_USE_IOCP
1148 OVERLAPPED or, ow;
1149#endif
451} ANFD; 1150} ANFD;
452 1151
1152/* stores the pending event set for a given watcher */
453typedef struct 1153typedef struct
454{ 1154{
455 W w; 1155 W w;
456 int events; 1156 int events; /* the pending event set for the given watcher */
457} ANPENDING; 1157} ANPENDING;
458 1158
459#if EV_USE_INOTIFY 1159#if EV_USE_INOTIFY
460/* hash table entry per inotify-id */ 1160/* hash table entry per inotify-id */
461typedef struct 1161typedef struct
… …
464} ANFS; 1164} ANFS;
465#endif 1165#endif
466 1166
467/* Heap Entry */ 1167/* Heap Entry */
468#if EV_HEAP_CACHE_AT 1168#if EV_HEAP_CACHE_AT
1169 /* a heap element */
469 typedef struct { 1170 typedef struct {
470 ev_tstamp at; 1171 ev_tstamp at;
471 WT w; 1172 WT w;
472 } ANHE; 1173 } ANHE;
473 1174
474 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1175 #define ANHE_w(he) (he).w /* access watcher, read-write */
475 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1176 #define ANHE_at(he) (he).at /* access cached at, read-only */
476 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 1177 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
477#else 1178#else
1179 /* a heap element */
478 typedef WT ANHE; 1180 typedef WT ANHE;
479 1181
480 #define ANHE_w(he) (he) 1182 #define ANHE_w(he) (he)
481 #define ANHE_at(he) (he)->at 1183 #define ANHE_at(he) (he)->at
482 #define ANHE_at_cache(he) 1184 #define ANHE_at_cache(he)
… …
506 1208
507 static int ev_default_loop_ptr; 1209 static int ev_default_loop_ptr;
508 1210
509#endif 1211#endif
510 1212
1213#if EV_FEATURE_API
1214# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1215# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1216# define EV_INVOKE_PENDING invoke_cb (EV_A)
1217#else
1218# define EV_RELEASE_CB (void)0
1219# define EV_ACQUIRE_CB (void)0
1220# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1221#endif
1222
1223#define EVBREAK_RECURSE 0x80
1224
511/*****************************************************************************/ 1225/*****************************************************************************/
512 1226
1227#ifndef EV_HAVE_EV_TIME
513ev_tstamp 1228ev_tstamp
514ev_time (void) 1229ev_time (void)
515{ 1230{
516#if EV_USE_REALTIME 1231#if EV_USE_REALTIME
1232 if (expect_true (have_realtime))
1233 {
517 struct timespec ts; 1234 struct timespec ts;
518 clock_gettime (CLOCK_REALTIME, &ts); 1235 clock_gettime (CLOCK_REALTIME, &ts);
519 return ts.tv_sec + ts.tv_nsec * 1e-9; 1236 return ts.tv_sec + ts.tv_nsec * 1e-9;
520#else 1237 }
1238#endif
1239
521 struct timeval tv; 1240 struct timeval tv;
522 gettimeofday (&tv, 0); 1241 gettimeofday (&tv, 0);
523 return tv.tv_sec + tv.tv_usec * 1e-6; 1242 return tv.tv_sec + tv.tv_usec * 1e-6;
524#endif
525} 1243}
1244#endif
526 1245
527ev_tstamp inline_size 1246inline_size ev_tstamp
528get_clock (void) 1247get_clock (void)
529{ 1248{
530#if EV_USE_MONOTONIC 1249#if EV_USE_MONOTONIC
531 if (expect_true (have_monotonic)) 1250 if (expect_true (have_monotonic))
532 { 1251 {
… …
553 if (delay > 0.) 1272 if (delay > 0.)
554 { 1273 {
555#if EV_USE_NANOSLEEP 1274#if EV_USE_NANOSLEEP
556 struct timespec ts; 1275 struct timespec ts;
557 1276
558 ts.tv_sec = (time_t)delay; 1277 EV_TS_SET (ts, delay);
559 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
560
561 nanosleep (&ts, 0); 1278 nanosleep (&ts, 0);
562#elif defined(_WIN32) 1279#elif defined(_WIN32)
563 Sleep ((unsigned long)(delay * 1e3)); 1280 Sleep ((unsigned long)(delay * 1e3));
564#else 1281#else
565 struct timeval tv; 1282 struct timeval tv;
566 1283
567 tv.tv_sec = (time_t)delay;
568 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
569
570 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1284 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
571 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1285 /* something not guaranteed by newer posix versions, but guaranteed */
572 /* by older ones */ 1286 /* by older ones */
1287 EV_TV_SET (tv, delay);
573 select (0, 0, 0, 0, &tv); 1288 select (0, 0, 0, 0, &tv);
574#endif 1289#endif
575 } 1290 }
576} 1291}
577 1292
578/*****************************************************************************/ 1293/*****************************************************************************/
579 1294
580#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1295#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
581 1296
582int inline_size 1297/* find a suitable new size for the given array, */
1298/* hopefully by rounding to a nice-to-malloc size */
1299inline_size int
583array_nextsize (int elem, int cur, int cnt) 1300array_nextsize (int elem, int cur, int cnt)
584{ 1301{
585 int ncur = cur + 1; 1302 int ncur = cur + 1;
586 1303
587 do 1304 do
… …
598 } 1315 }
599 1316
600 return ncur; 1317 return ncur;
601} 1318}
602 1319
603static noinline void * 1320static void * noinline ecb_cold
604array_realloc (int elem, void *base, int *cur, int cnt) 1321array_realloc (int elem, void *base, int *cur, int cnt)
605{ 1322{
606 *cur = array_nextsize (elem, *cur, cnt); 1323 *cur = array_nextsize (elem, *cur, cnt);
607 return ev_realloc (base, elem * *cur); 1324 return ev_realloc (base, elem * *cur);
608} 1325}
1326
1327#define array_init_zero(base,count) \
1328 memset ((void *)(base), 0, sizeof (*(base)) * (count))
609 1329
610#define array_needsize(type,base,cur,cnt,init) \ 1330#define array_needsize(type,base,cur,cnt,init) \
611 if (expect_false ((cnt) > (cur))) \ 1331 if (expect_false ((cnt) > (cur))) \
612 { \ 1332 { \
613 int ocur_ = (cur); \ 1333 int ecb_unused ocur_ = (cur); \
614 (base) = (type *)array_realloc \ 1334 (base) = (type *)array_realloc \
615 (sizeof (type), (base), &(cur), (cnt)); \ 1335 (sizeof (type), (base), &(cur), (cnt)); \
616 init ((base) + (ocur_), (cur) - ocur_); \ 1336 init ((base) + (ocur_), (cur) - ocur_); \
617 } 1337 }
618 1338
… …
625 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1345 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
626 } 1346 }
627#endif 1347#endif
628 1348
629#define array_free(stem, idx) \ 1349#define array_free(stem, idx) \
630 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1350 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
631 1351
632/*****************************************************************************/ 1352/*****************************************************************************/
1353
1354/* dummy callback for pending events */
1355static void noinline
1356pendingcb (EV_P_ ev_prepare *w, int revents)
1357{
1358}
633 1359
634void noinline 1360void noinline
635ev_feed_event (EV_P_ void *w, int revents) 1361ev_feed_event (EV_P_ void *w, int revents)
636{ 1362{
637 W w_ = (W)w; 1363 W w_ = (W)w;
… …
646 pendings [pri][w_->pending - 1].w = w_; 1372 pendings [pri][w_->pending - 1].w = w_;
647 pendings [pri][w_->pending - 1].events = revents; 1373 pendings [pri][w_->pending - 1].events = revents;
648 } 1374 }
649} 1375}
650 1376
651void inline_speed 1377inline_speed void
1378feed_reverse (EV_P_ W w)
1379{
1380 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1381 rfeeds [rfeedcnt++] = w;
1382}
1383
1384inline_size void
1385feed_reverse_done (EV_P_ int revents)
1386{
1387 do
1388 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1389 while (rfeedcnt);
1390}
1391
1392inline_speed void
652queue_events (EV_P_ W *events, int eventcnt, int type) 1393queue_events (EV_P_ W *events, int eventcnt, int type)
653{ 1394{
654 int i; 1395 int i;
655 1396
656 for (i = 0; i < eventcnt; ++i) 1397 for (i = 0; i < eventcnt; ++i)
657 ev_feed_event (EV_A_ events [i], type); 1398 ev_feed_event (EV_A_ events [i], type);
658} 1399}
659 1400
660/*****************************************************************************/ 1401/*****************************************************************************/
661 1402
662void inline_size 1403inline_speed void
663anfds_init (ANFD *base, int count)
664{
665 while (count--)
666 {
667 base->head = 0;
668 base->events = EV_NONE;
669 base->reify = 0;
670
671 ++base;
672 }
673}
674
675void inline_speed
676fd_event (EV_P_ int fd, int revents) 1404fd_event_nocheck (EV_P_ int fd, int revents)
677{ 1405{
678 ANFD *anfd = anfds + fd; 1406 ANFD *anfd = anfds + fd;
679 ev_io *w; 1407 ev_io *w;
680 1408
681 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1409 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
685 if (ev) 1413 if (ev)
686 ev_feed_event (EV_A_ (W)w, ev); 1414 ev_feed_event (EV_A_ (W)w, ev);
687 } 1415 }
688} 1416}
689 1417
1418/* do not submit kernel events for fds that have reify set */
1419/* because that means they changed while we were polling for new events */
1420inline_speed void
1421fd_event (EV_P_ int fd, int revents)
1422{
1423 ANFD *anfd = anfds + fd;
1424
1425 if (expect_true (!anfd->reify))
1426 fd_event_nocheck (EV_A_ fd, revents);
1427}
1428
690void 1429void
691ev_feed_fd_event (EV_P_ int fd, int revents) 1430ev_feed_fd_event (EV_P_ int fd, int revents)
692{ 1431{
693 if (fd >= 0 && fd < anfdmax) 1432 if (fd >= 0 && fd < anfdmax)
694 fd_event (EV_A_ fd, revents); 1433 fd_event_nocheck (EV_A_ fd, revents);
695} 1434}
696 1435
697void inline_size 1436/* make sure the external fd watch events are in-sync */
1437/* with the kernel/libev internal state */
1438inline_size void
698fd_reify (EV_P) 1439fd_reify (EV_P)
699{ 1440{
700 int i; 1441 int i;
1442
1443#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1444 for (i = 0; i < fdchangecnt; ++i)
1445 {
1446 int fd = fdchanges [i];
1447 ANFD *anfd = anfds + fd;
1448
1449 if (anfd->reify & EV__IOFDSET && anfd->head)
1450 {
1451 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1452
1453 if (handle != anfd->handle)
1454 {
1455 unsigned long arg;
1456
1457 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1458
1459 /* handle changed, but fd didn't - we need to do it in two steps */
1460 backend_modify (EV_A_ fd, anfd->events, 0);
1461 anfd->events = 0;
1462 anfd->handle = handle;
1463 }
1464 }
1465 }
1466#endif
701 1467
702 for (i = 0; i < fdchangecnt; ++i) 1468 for (i = 0; i < fdchangecnt; ++i)
703 { 1469 {
704 int fd = fdchanges [i]; 1470 int fd = fdchanges [i];
705 ANFD *anfd = anfds + fd; 1471 ANFD *anfd = anfds + fd;
706 ev_io *w; 1472 ev_io *w;
707 1473
708 unsigned char events = 0; 1474 unsigned char o_events = anfd->events;
1475 unsigned char o_reify = anfd->reify;
709 1476
710 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1477 anfd->reify = 0;
711 events |= (unsigned char)w->events;
712 1478
713#if EV_SELECT_IS_WINSOCKET 1479 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
714 if (events)
715 { 1480 {
716 unsigned long arg; 1481 anfd->events = 0;
717 #ifdef EV_FD_TO_WIN32_HANDLE 1482
718 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1483 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
719 #else 1484 anfd->events |= (unsigned char)w->events;
720 anfd->handle = _get_osfhandle (fd); 1485
721 #endif 1486 if (o_events != anfd->events)
722 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1487 o_reify = EV__IOFDSET; /* actually |= */
723 } 1488 }
724#endif
725 1489
726 { 1490 if (o_reify & EV__IOFDSET)
727 unsigned char o_events = anfd->events;
728 unsigned char o_reify = anfd->reify;
729
730 anfd->reify = 0;
731 anfd->events = events;
732
733 if (o_events != events || o_reify & EV_IOFDSET)
734 backend_modify (EV_A_ fd, o_events, events); 1491 backend_modify (EV_A_ fd, o_events, anfd->events);
735 }
736 } 1492 }
737 1493
738 fdchangecnt = 0; 1494 fdchangecnt = 0;
739} 1495}
740 1496
741void inline_size 1497/* something about the given fd changed */
1498inline_size void
742fd_change (EV_P_ int fd, int flags) 1499fd_change (EV_P_ int fd, int flags)
743{ 1500{
744 unsigned char reify = anfds [fd].reify; 1501 unsigned char reify = anfds [fd].reify;
745 anfds [fd].reify |= flags; 1502 anfds [fd].reify |= flags;
746 1503
… …
750 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1507 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
751 fdchanges [fdchangecnt - 1] = fd; 1508 fdchanges [fdchangecnt - 1] = fd;
752 } 1509 }
753} 1510}
754 1511
755void inline_speed 1512/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1513inline_speed void ecb_cold
756fd_kill (EV_P_ int fd) 1514fd_kill (EV_P_ int fd)
757{ 1515{
758 ev_io *w; 1516 ev_io *w;
759 1517
760 while ((w = (ev_io *)anfds [fd].head)) 1518 while ((w = (ev_io *)anfds [fd].head))
… …
762 ev_io_stop (EV_A_ w); 1520 ev_io_stop (EV_A_ w);
763 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1521 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
764 } 1522 }
765} 1523}
766 1524
767int inline_size 1525/* check whether the given fd is actually valid, for error recovery */
1526inline_size int ecb_cold
768fd_valid (int fd) 1527fd_valid (int fd)
769{ 1528{
770#ifdef _WIN32 1529#ifdef _WIN32
771 return _get_osfhandle (fd) != -1; 1530 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
772#else 1531#else
773 return fcntl (fd, F_GETFD) != -1; 1532 return fcntl (fd, F_GETFD) != -1;
774#endif 1533#endif
775} 1534}
776 1535
777/* called on EBADF to verify fds */ 1536/* called on EBADF to verify fds */
778static void noinline 1537static void noinline ecb_cold
779fd_ebadf (EV_P) 1538fd_ebadf (EV_P)
780{ 1539{
781 int fd; 1540 int fd;
782 1541
783 for (fd = 0; fd < anfdmax; ++fd) 1542 for (fd = 0; fd < anfdmax; ++fd)
… …
785 if (!fd_valid (fd) && errno == EBADF) 1544 if (!fd_valid (fd) && errno == EBADF)
786 fd_kill (EV_A_ fd); 1545 fd_kill (EV_A_ fd);
787} 1546}
788 1547
789/* called on ENOMEM in select/poll to kill some fds and retry */ 1548/* called on ENOMEM in select/poll to kill some fds and retry */
790static void noinline 1549static void noinline ecb_cold
791fd_enomem (EV_P) 1550fd_enomem (EV_P)
792{ 1551{
793 int fd; 1552 int fd;
794 1553
795 for (fd = anfdmax; fd--; ) 1554 for (fd = anfdmax; fd--; )
796 if (anfds [fd].events) 1555 if (anfds [fd].events)
797 { 1556 {
798 fd_kill (EV_A_ fd); 1557 fd_kill (EV_A_ fd);
799 return; 1558 break;
800 } 1559 }
801} 1560}
802 1561
803/* usually called after fork if backend needs to re-arm all fds from scratch */ 1562/* usually called after fork if backend needs to re-arm all fds from scratch */
804static void noinline 1563static void noinline
… …
808 1567
809 for (fd = 0; fd < anfdmax; ++fd) 1568 for (fd = 0; fd < anfdmax; ++fd)
810 if (anfds [fd].events) 1569 if (anfds [fd].events)
811 { 1570 {
812 anfds [fd].events = 0; 1571 anfds [fd].events = 0;
1572 anfds [fd].emask = 0;
813 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1573 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
814 } 1574 }
815} 1575}
816 1576
1577/* used to prepare libev internal fd's */
1578/* this is not fork-safe */
1579inline_speed void
1580fd_intern (int fd)
1581{
1582#ifdef _WIN32
1583 unsigned long arg = 1;
1584 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1585#else
1586 fcntl (fd, F_SETFD, FD_CLOEXEC);
1587 fcntl (fd, F_SETFL, O_NONBLOCK);
1588#endif
1589}
1590
817/*****************************************************************************/ 1591/*****************************************************************************/
818 1592
819/* 1593/*
820 * the heap functions want a real array index. array index 0 uis guaranteed to not 1594 * the heap functions want a real array index. array index 0 is guaranteed to not
821 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1595 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
822 * the branching factor of the d-tree. 1596 * the branching factor of the d-tree.
823 */ 1597 */
824 1598
825/* 1599/*
… …
834#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1608#define HEAP0 (DHEAP - 1) /* index of first element in heap */
835#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1609#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
836#define UPHEAP_DONE(p,k) ((p) == (k)) 1610#define UPHEAP_DONE(p,k) ((p) == (k))
837 1611
838/* away from the root */ 1612/* away from the root */
839void inline_speed 1613inline_speed void
840downheap (ANHE *heap, int N, int k) 1614downheap (ANHE *heap, int N, int k)
841{ 1615{
842 ANHE he = heap [k]; 1616 ANHE he = heap [k];
843 ANHE *E = heap + N + HEAP0; 1617 ANHE *E = heap + N + HEAP0;
844 1618
… …
884#define HEAP0 1 1658#define HEAP0 1
885#define HPARENT(k) ((k) >> 1) 1659#define HPARENT(k) ((k) >> 1)
886#define UPHEAP_DONE(p,k) (!(p)) 1660#define UPHEAP_DONE(p,k) (!(p))
887 1661
888/* away from the root */ 1662/* away from the root */
889void inline_speed 1663inline_speed void
890downheap (ANHE *heap, int N, int k) 1664downheap (ANHE *heap, int N, int k)
891{ 1665{
892 ANHE he = heap [k]; 1666 ANHE he = heap [k];
893 1667
894 for (;;) 1668 for (;;)
895 { 1669 {
896 int c = k << 1; 1670 int c = k << 1;
897 1671
898 if (c > N + HEAP0 - 1) 1672 if (c >= N + HEAP0)
899 break; 1673 break;
900 1674
901 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1675 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
902 ? 1 : 0; 1676 ? 1 : 0;
903 1677
… …
914 ev_active (ANHE_w (he)) = k; 1688 ev_active (ANHE_w (he)) = k;
915} 1689}
916#endif 1690#endif
917 1691
918/* towards the root */ 1692/* towards the root */
919void inline_speed 1693inline_speed void
920upheap (ANHE *heap, int k) 1694upheap (ANHE *heap, int k)
921{ 1695{
922 ANHE he = heap [k]; 1696 ANHE he = heap [k];
923 1697
924 for (;;) 1698 for (;;)
… …
935 1709
936 heap [k] = he; 1710 heap [k] = he;
937 ev_active (ANHE_w (he)) = k; 1711 ev_active (ANHE_w (he)) = k;
938} 1712}
939 1713
940void inline_size 1714/* move an element suitably so it is in a correct place */
1715inline_size void
941adjustheap (ANHE *heap, int N, int k) 1716adjustheap (ANHE *heap, int N, int k)
942{ 1717{
943 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1718 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
944 upheap (heap, k); 1719 upheap (heap, k);
945 else 1720 else
946 downheap (heap, N, k); 1721 downheap (heap, N, k);
947} 1722}
948 1723
949/* rebuild the heap: this function is used only once and executed rarely */ 1724/* rebuild the heap: this function is used only once and executed rarely */
950void inline_size 1725inline_size void
951reheap (ANHE *heap, int N) 1726reheap (ANHE *heap, int N)
952{ 1727{
953 int i; 1728 int i;
954 1729
955 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1730 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
958 upheap (heap, i + HEAP0); 1733 upheap (heap, i + HEAP0);
959} 1734}
960 1735
961/*****************************************************************************/ 1736/*****************************************************************************/
962 1737
1738/* associate signal watchers to a signal signal */
963typedef struct 1739typedef struct
964{ 1740{
1741 EV_ATOMIC_T pending;
1742#if EV_MULTIPLICITY
1743 EV_P;
1744#endif
965 WL head; 1745 WL head;
966 EV_ATOMIC_T gotsig;
967} ANSIG; 1746} ANSIG;
968 1747
969static ANSIG *signals; 1748static ANSIG signals [EV_NSIG - 1];
970static int signalmax;
971
972static EV_ATOMIC_T gotsig;
973
974void inline_size
975signals_init (ANSIG *base, int count)
976{
977 while (count--)
978 {
979 base->head = 0;
980 base->gotsig = 0;
981
982 ++base;
983 }
984}
985 1749
986/*****************************************************************************/ 1750/*****************************************************************************/
987 1751
988void inline_speed 1752#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
989fd_intern (int fd)
990{
991#ifdef _WIN32
992 unsigned long arg = 1;
993 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
994#else
995 fcntl (fd, F_SETFD, FD_CLOEXEC);
996 fcntl (fd, F_SETFL, O_NONBLOCK);
997#endif
998}
999 1753
1000static void noinline 1754static void noinline ecb_cold
1001evpipe_init (EV_P) 1755evpipe_init (EV_P)
1002{ 1756{
1003 if (!ev_is_active (&pipeev)) 1757 if (!ev_is_active (&pipe_w))
1004 { 1758 {
1005#if EV_USE_EVENTFD 1759# if EV_USE_EVENTFD
1760 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1761 if (evfd < 0 && errno == EINVAL)
1006 if ((evfd = eventfd (0, 0)) >= 0) 1762 evfd = eventfd (0, 0);
1763
1764 if (evfd >= 0)
1007 { 1765 {
1008 evpipe [0] = -1; 1766 evpipe [0] = -1;
1009 fd_intern (evfd); 1767 fd_intern (evfd); /* doing it twice doesn't hurt */
1010 ev_io_set (&pipeev, evfd, EV_READ); 1768 ev_io_set (&pipe_w, evfd, EV_READ);
1011 } 1769 }
1012 else 1770 else
1013#endif 1771# endif
1014 { 1772 {
1015 while (pipe (evpipe)) 1773 while (pipe (evpipe))
1016 syserr ("(libev) error creating signal/async pipe"); 1774 ev_syserr ("(libev) error creating signal/async pipe");
1017 1775
1018 fd_intern (evpipe [0]); 1776 fd_intern (evpipe [0]);
1019 fd_intern (evpipe [1]); 1777 fd_intern (evpipe [1]);
1020 ev_io_set (&pipeev, evpipe [0], EV_READ); 1778 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1021 } 1779 }
1022 1780
1023 ev_io_start (EV_A_ &pipeev); 1781 ev_io_start (EV_A_ &pipe_w);
1024 ev_unref (EV_A); /* watcher should not keep loop alive */ 1782 ev_unref (EV_A); /* watcher should not keep loop alive */
1025 } 1783 }
1026} 1784}
1027 1785
1028void inline_size 1786inline_speed void
1029evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1787evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1030{ 1788{
1031 if (!*flag) 1789 if (expect_true (*flag))
1790 return;
1791
1792 *flag = 1;
1793
1794 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1795
1796 pipe_write_skipped = 1;
1797
1798 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1799
1800 if (pipe_write_wanted)
1032 { 1801 {
1802 int old_errno;
1803
1804 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1805
1033 int old_errno = errno; /* save errno because write might clobber it */ 1806 old_errno = errno; /* save errno because write will clobber it */
1034
1035 *flag = 1;
1036 1807
1037#if EV_USE_EVENTFD 1808#if EV_USE_EVENTFD
1038 if (evfd >= 0) 1809 if (evfd >= 0)
1039 { 1810 {
1040 uint64_t counter = 1; 1811 uint64_t counter = 1;
1041 write (evfd, &counter, sizeof (uint64_t)); 1812 write (evfd, &counter, sizeof (uint64_t));
1042 } 1813 }
1043 else 1814 else
1044#endif 1815#endif
1816 {
1817 /* win32 people keep sending patches that change this write() to send() */
1818 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1819 /* so when you think this write should be a send instead, please find out */
1820 /* where your send() is from - it's definitely not the microsoft send, and */
1821 /* tell me. thank you. */
1045 write (evpipe [1], &old_errno, 1); 1822 write (evpipe [1], &(evpipe [1]), 1);
1823 }
1046 1824
1047 errno = old_errno; 1825 errno = old_errno;
1048 } 1826 }
1049} 1827}
1050 1828
1829/* called whenever the libev signal pipe */
1830/* got some events (signal, async) */
1051static void 1831static void
1052pipecb (EV_P_ ev_io *iow, int revents) 1832pipecb (EV_P_ ev_io *iow, int revents)
1053{ 1833{
1834 int i;
1835
1836 if (revents & EV_READ)
1837 {
1054#if EV_USE_EVENTFD 1838#if EV_USE_EVENTFD
1055 if (evfd >= 0) 1839 if (evfd >= 0)
1056 { 1840 {
1057 uint64_t counter; 1841 uint64_t counter;
1058 read (evfd, &counter, sizeof (uint64_t)); 1842 read (evfd, &counter, sizeof (uint64_t));
1059 } 1843 }
1060 else 1844 else
1061#endif 1845#endif
1062 { 1846 {
1063 char dummy; 1847 char dummy;
1848 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1064 read (evpipe [0], &dummy, 1); 1849 read (evpipe [0], &dummy, 1);
1850 }
1851 }
1852
1853 pipe_write_skipped = 0;
1854
1855#if EV_SIGNAL_ENABLE
1856 if (sig_pending)
1065 } 1857 {
1858 sig_pending = 0;
1066 1859
1067 if (gotsig && ev_is_default_loop (EV_A)) 1860 for (i = EV_NSIG - 1; i--; )
1068 { 1861 if (expect_false (signals [i].pending))
1069 int signum;
1070 gotsig = 0;
1071
1072 for (signum = signalmax; signum--; )
1073 if (signals [signum].gotsig)
1074 ev_feed_signal_event (EV_A_ signum + 1); 1862 ev_feed_signal_event (EV_A_ i + 1);
1075 } 1863 }
1864#endif
1076 1865
1077#if EV_ASYNC_ENABLE 1866#if EV_ASYNC_ENABLE
1078 if (gotasync) 1867 if (async_pending)
1079 { 1868 {
1080 int i; 1869 async_pending = 0;
1081 gotasync = 0;
1082 1870
1083 for (i = asynccnt; i--; ) 1871 for (i = asynccnt; i--; )
1084 if (asyncs [i]->sent) 1872 if (asyncs [i]->sent)
1085 { 1873 {
1086 asyncs [i]->sent = 0; 1874 asyncs [i]->sent = 0;
… …
1090#endif 1878#endif
1091} 1879}
1092 1880
1093/*****************************************************************************/ 1881/*****************************************************************************/
1094 1882
1883void
1884ev_feed_signal (int signum)
1885{
1886#if EV_MULTIPLICITY
1887 EV_P = signals [signum - 1].loop;
1888
1889 if (!EV_A)
1890 return;
1891#endif
1892
1893 if (!ev_active (&pipe_w))
1894 return;
1895
1896 signals [signum - 1].pending = 1;
1897 evpipe_write (EV_A_ &sig_pending);
1898}
1899
1095static void 1900static void
1096ev_sighandler (int signum) 1901ev_sighandler (int signum)
1097{ 1902{
1098#if EV_MULTIPLICITY
1099 struct ev_loop *loop = &default_loop_struct;
1100#endif
1101
1102#if _WIN32 1903#ifdef _WIN32
1103 signal (signum, ev_sighandler); 1904 signal (signum, ev_sighandler);
1104#endif 1905#endif
1105 1906
1106 signals [signum - 1].gotsig = 1; 1907 ev_feed_signal (signum);
1107 evpipe_write (EV_A_ &gotsig);
1108} 1908}
1109 1909
1110void noinline 1910void noinline
1111ev_feed_signal_event (EV_P_ int signum) 1911ev_feed_signal_event (EV_P_ int signum)
1112{ 1912{
1113 WL w; 1913 WL w;
1114 1914
1915 if (expect_false (signum <= 0 || signum > EV_NSIG))
1916 return;
1917
1918 --signum;
1919
1115#if EV_MULTIPLICITY 1920#if EV_MULTIPLICITY
1116 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1921 /* it is permissible to try to feed a signal to the wrong loop */
1117#endif 1922 /* or, likely more useful, feeding a signal nobody is waiting for */
1118 1923
1119 --signum; 1924 if (expect_false (signals [signum].loop != EV_A))
1120
1121 if (signum < 0 || signum >= signalmax)
1122 return; 1925 return;
1926#endif
1123 1927
1124 signals [signum].gotsig = 0; 1928 signals [signum].pending = 0;
1125 1929
1126 for (w = signals [signum].head; w; w = w->next) 1930 for (w = signals [signum].head; w; w = w->next)
1127 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1931 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1128} 1932}
1129 1933
1934#if EV_USE_SIGNALFD
1935static void
1936sigfdcb (EV_P_ ev_io *iow, int revents)
1937{
1938 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1939
1940 for (;;)
1941 {
1942 ssize_t res = read (sigfd, si, sizeof (si));
1943
1944 /* not ISO-C, as res might be -1, but works with SuS */
1945 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1946 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1947
1948 if (res < (ssize_t)sizeof (si))
1949 break;
1950 }
1951}
1952#endif
1953
1954#endif
1955
1130/*****************************************************************************/ 1956/*****************************************************************************/
1131 1957
1958#if EV_CHILD_ENABLE
1132static WL childs [EV_PID_HASHSIZE]; 1959static WL childs [EV_PID_HASHSIZE];
1133
1134#ifndef _WIN32
1135 1960
1136static ev_signal childev; 1961static ev_signal childev;
1137 1962
1138#ifndef WIFCONTINUED 1963#ifndef WIFCONTINUED
1139# define WIFCONTINUED(status) 0 1964# define WIFCONTINUED(status) 0
1140#endif 1965#endif
1141 1966
1142void inline_speed 1967/* handle a single child status event */
1968inline_speed void
1143child_reap (EV_P_ int chain, int pid, int status) 1969child_reap (EV_P_ int chain, int pid, int status)
1144{ 1970{
1145 ev_child *w; 1971 ev_child *w;
1146 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1972 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1147 1973
1148 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1974 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1149 { 1975 {
1150 if ((w->pid == pid || !w->pid) 1976 if ((w->pid == pid || !w->pid)
1151 && (!traced || (w->flags & 1))) 1977 && (!traced || (w->flags & 1)))
1152 { 1978 {
1153 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1979 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1160 1986
1161#ifndef WCONTINUED 1987#ifndef WCONTINUED
1162# define WCONTINUED 0 1988# define WCONTINUED 0
1163#endif 1989#endif
1164 1990
1991/* called on sigchld etc., calls waitpid */
1165static void 1992static void
1166childcb (EV_P_ ev_signal *sw, int revents) 1993childcb (EV_P_ ev_signal *sw, int revents)
1167{ 1994{
1168 int pid, status; 1995 int pid, status;
1169 1996
… …
1177 /* make sure we are called again until all children have been reaped */ 2004 /* make sure we are called again until all children have been reaped */
1178 /* we need to do it this way so that the callback gets called before we continue */ 2005 /* we need to do it this way so that the callback gets called before we continue */
1179 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 2006 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1180 2007
1181 child_reap (EV_A_ pid, pid, status); 2008 child_reap (EV_A_ pid, pid, status);
1182 if (EV_PID_HASHSIZE > 1) 2009 if ((EV_PID_HASHSIZE) > 1)
1183 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 2010 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1184} 2011}
1185 2012
1186#endif 2013#endif
1187 2014
1188/*****************************************************************************/ 2015/*****************************************************************************/
1189 2016
2017#if EV_USE_IOCP
2018# include "ev_iocp.c"
2019#endif
1190#if EV_USE_PORT 2020#if EV_USE_PORT
1191# include "ev_port.c" 2021# include "ev_port.c"
1192#endif 2022#endif
1193#if EV_USE_KQUEUE 2023#if EV_USE_KQUEUE
1194# include "ev_kqueue.c" 2024# include "ev_kqueue.c"
… …
1201#endif 2031#endif
1202#if EV_USE_SELECT 2032#if EV_USE_SELECT
1203# include "ev_select.c" 2033# include "ev_select.c"
1204#endif 2034#endif
1205 2035
1206int 2036int ecb_cold
1207ev_version_major (void) 2037ev_version_major (void)
1208{ 2038{
1209 return EV_VERSION_MAJOR; 2039 return EV_VERSION_MAJOR;
1210} 2040}
1211 2041
1212int 2042int ecb_cold
1213ev_version_minor (void) 2043ev_version_minor (void)
1214{ 2044{
1215 return EV_VERSION_MINOR; 2045 return EV_VERSION_MINOR;
1216} 2046}
1217 2047
1218/* return true if we are running with elevated privileges and should ignore env variables */ 2048/* return true if we are running with elevated privileges and should ignore env variables */
1219int inline_size 2049int inline_size ecb_cold
1220enable_secure (void) 2050enable_secure (void)
1221{ 2051{
1222#ifdef _WIN32 2052#ifdef _WIN32
1223 return 0; 2053 return 0;
1224#else 2054#else
1225 return getuid () != geteuid () 2055 return getuid () != geteuid ()
1226 || getgid () != getegid (); 2056 || getgid () != getegid ();
1227#endif 2057#endif
1228} 2058}
1229 2059
1230unsigned int 2060unsigned int ecb_cold
1231ev_supported_backends (void) 2061ev_supported_backends (void)
1232{ 2062{
1233 unsigned int flags = 0; 2063 unsigned int flags = 0;
1234 2064
1235 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2065 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1239 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2069 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1240 2070
1241 return flags; 2071 return flags;
1242} 2072}
1243 2073
1244unsigned int 2074unsigned int ecb_cold
1245ev_recommended_backends (void) 2075ev_recommended_backends (void)
1246{ 2076{
1247 unsigned int flags = ev_supported_backends (); 2077 unsigned int flags = ev_supported_backends ();
1248 2078
1249#ifndef __NetBSD__ 2079#ifndef __NetBSD__
1250 /* kqueue is borked on everything but netbsd apparently */ 2080 /* kqueue is borked on everything but netbsd apparently */
1251 /* it usually doesn't work correctly on anything but sockets and pipes */ 2081 /* it usually doesn't work correctly on anything but sockets and pipes */
1252 flags &= ~EVBACKEND_KQUEUE; 2082 flags &= ~EVBACKEND_KQUEUE;
1253#endif 2083#endif
1254#ifdef __APPLE__ 2084#ifdef __APPLE__
1255 // flags &= ~EVBACKEND_KQUEUE; for documentation 2085 /* only select works correctly on that "unix-certified" platform */
1256 flags &= ~EVBACKEND_POLL; 2086 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
2087 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
2088#endif
2089#ifdef __FreeBSD__
2090 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1257#endif 2091#endif
1258 2092
1259 return flags; 2093 return flags;
1260} 2094}
1261 2095
1262unsigned int 2096unsigned int ecb_cold
1263ev_embeddable_backends (void) 2097ev_embeddable_backends (void)
1264{ 2098{
1265 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2099 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1266 2100
1267 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2101 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1268 /* please fix it and tell me how to detect the fix */ 2102 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1269 flags &= ~EVBACKEND_EPOLL; 2103 flags &= ~EVBACKEND_EPOLL;
1270 2104
1271 return flags; 2105 return flags;
1272} 2106}
1273 2107
1274unsigned int 2108unsigned int
1275ev_backend (EV_P) 2109ev_backend (EV_P)
1276{ 2110{
1277 return backend; 2111 return backend;
1278} 2112}
1279 2113
2114#if EV_FEATURE_API
1280unsigned int 2115unsigned int
1281ev_loop_count (EV_P) 2116ev_iteration (EV_P)
1282{ 2117{
1283 return loop_count; 2118 return loop_count;
2119}
2120
2121unsigned int
2122ev_depth (EV_P)
2123{
2124 return loop_depth;
1284} 2125}
1285 2126
1286void 2127void
1287ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2128ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1288{ 2129{
… …
1293ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2134ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1294{ 2135{
1295 timeout_blocktime = interval; 2136 timeout_blocktime = interval;
1296} 2137}
1297 2138
2139void
2140ev_set_userdata (EV_P_ void *data)
2141{
2142 userdata = data;
2143}
2144
2145void *
2146ev_userdata (EV_P)
2147{
2148 return userdata;
2149}
2150
2151void
2152ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
2153{
2154 invoke_cb = invoke_pending_cb;
2155}
2156
2157void
2158ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
2159{
2160 release_cb = release;
2161 acquire_cb = acquire;
2162}
2163#endif
2164
2165/* initialise a loop structure, must be zero-initialised */
1298static void noinline 2166static void noinline ecb_cold
1299loop_init (EV_P_ unsigned int flags) 2167loop_init (EV_P_ unsigned int flags)
1300{ 2168{
1301 if (!backend) 2169 if (!backend)
1302 { 2170 {
2171 origflags = flags;
2172
2173#if EV_USE_REALTIME
2174 if (!have_realtime)
2175 {
2176 struct timespec ts;
2177
2178 if (!clock_gettime (CLOCK_REALTIME, &ts))
2179 have_realtime = 1;
2180 }
2181#endif
2182
1303#if EV_USE_MONOTONIC 2183#if EV_USE_MONOTONIC
2184 if (!have_monotonic)
1304 { 2185 {
1305 struct timespec ts; 2186 struct timespec ts;
2187
1306 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2188 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1307 have_monotonic = 1; 2189 have_monotonic = 1;
1308 } 2190 }
1309#endif
1310
1311 ev_rt_now = ev_time ();
1312 mn_now = get_clock ();
1313 now_floor = mn_now;
1314 rtmn_diff = ev_rt_now - mn_now;
1315
1316 io_blocktime = 0.;
1317 timeout_blocktime = 0.;
1318 backend = 0;
1319 backend_fd = -1;
1320 gotasync = 0;
1321#if EV_USE_INOTIFY
1322 fs_fd = -2;
1323#endif 2191#endif
1324 2192
1325 /* pid check not overridable via env */ 2193 /* pid check not overridable via env */
1326#ifndef _WIN32 2194#ifndef _WIN32
1327 if (flags & EVFLAG_FORKCHECK) 2195 if (flags & EVFLAG_FORKCHECK)
… …
1331 if (!(flags & EVFLAG_NOENV) 2199 if (!(flags & EVFLAG_NOENV)
1332 && !enable_secure () 2200 && !enable_secure ()
1333 && getenv ("LIBEV_FLAGS")) 2201 && getenv ("LIBEV_FLAGS"))
1334 flags = atoi (getenv ("LIBEV_FLAGS")); 2202 flags = atoi (getenv ("LIBEV_FLAGS"));
1335 2203
1336 if (!(flags & 0x0000ffffU)) 2204 ev_rt_now = ev_time ();
2205 mn_now = get_clock ();
2206 now_floor = mn_now;
2207 rtmn_diff = ev_rt_now - mn_now;
2208#if EV_FEATURE_API
2209 invoke_cb = ev_invoke_pending;
2210#endif
2211
2212 io_blocktime = 0.;
2213 timeout_blocktime = 0.;
2214 backend = 0;
2215 backend_fd = -1;
2216 sig_pending = 0;
2217#if EV_ASYNC_ENABLE
2218 async_pending = 0;
2219#endif
2220 pipe_write_skipped = 0;
2221 pipe_write_wanted = 0;
2222#if EV_USE_INOTIFY
2223 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2224#endif
2225#if EV_USE_SIGNALFD
2226 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2227#endif
2228
2229 if (!(flags & EVBACKEND_MASK))
1337 flags |= ev_recommended_backends (); 2230 flags |= ev_recommended_backends ();
1338 2231
2232#if EV_USE_IOCP
2233 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2234#endif
1339#if EV_USE_PORT 2235#if EV_USE_PORT
1340 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2236 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1341#endif 2237#endif
1342#if EV_USE_KQUEUE 2238#if EV_USE_KQUEUE
1343 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2239 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1350#endif 2246#endif
1351#if EV_USE_SELECT 2247#if EV_USE_SELECT
1352 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2248 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1353#endif 2249#endif
1354 2250
2251 ev_prepare_init (&pending_w, pendingcb);
2252
2253#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1355 ev_init (&pipeev, pipecb); 2254 ev_init (&pipe_w, pipecb);
1356 ev_set_priority (&pipeev, EV_MAXPRI); 2255 ev_set_priority (&pipe_w, EV_MAXPRI);
2256#endif
1357 } 2257 }
1358} 2258}
1359 2259
1360static void noinline 2260/* free up a loop structure */
2261void ecb_cold
1361loop_destroy (EV_P) 2262ev_loop_destroy (EV_P)
1362{ 2263{
1363 int i; 2264 int i;
1364 2265
2266#if EV_MULTIPLICITY
2267 /* mimic free (0) */
2268 if (!EV_A)
2269 return;
2270#endif
2271
2272#if EV_CLEANUP_ENABLE
2273 /* queue cleanup watchers (and execute them) */
2274 if (expect_false (cleanupcnt))
2275 {
2276 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2277 EV_INVOKE_PENDING;
2278 }
2279#endif
2280
2281#if EV_CHILD_ENABLE
2282 if (ev_is_active (&childev))
2283 {
2284 ev_ref (EV_A); /* child watcher */
2285 ev_signal_stop (EV_A_ &childev);
2286 }
2287#endif
2288
1365 if (ev_is_active (&pipeev)) 2289 if (ev_is_active (&pipe_w))
1366 { 2290 {
1367 ev_ref (EV_A); /* signal watcher */ 2291 /*ev_ref (EV_A);*/
1368 ev_io_stop (EV_A_ &pipeev); 2292 /*ev_io_stop (EV_A_ &pipe_w);*/
1369 2293
1370#if EV_USE_EVENTFD 2294#if EV_USE_EVENTFD
1371 if (evfd >= 0) 2295 if (evfd >= 0)
1372 close (evfd); 2296 close (evfd);
1373#endif 2297#endif
1374 2298
1375 if (evpipe [0] >= 0) 2299 if (evpipe [0] >= 0)
1376 { 2300 {
1377 close (evpipe [0]); 2301 EV_WIN32_CLOSE_FD (evpipe [0]);
1378 close (evpipe [1]); 2302 EV_WIN32_CLOSE_FD (evpipe [1]);
1379 } 2303 }
1380 } 2304 }
2305
2306#if EV_USE_SIGNALFD
2307 if (ev_is_active (&sigfd_w))
2308 close (sigfd);
2309#endif
1381 2310
1382#if EV_USE_INOTIFY 2311#if EV_USE_INOTIFY
1383 if (fs_fd >= 0) 2312 if (fs_fd >= 0)
1384 close (fs_fd); 2313 close (fs_fd);
1385#endif 2314#endif
1386 2315
1387 if (backend_fd >= 0) 2316 if (backend_fd >= 0)
1388 close (backend_fd); 2317 close (backend_fd);
1389 2318
2319#if EV_USE_IOCP
2320 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2321#endif
1390#if EV_USE_PORT 2322#if EV_USE_PORT
1391 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2323 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1392#endif 2324#endif
1393#if EV_USE_KQUEUE 2325#if EV_USE_KQUEUE
1394 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2326 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1409#if EV_IDLE_ENABLE 2341#if EV_IDLE_ENABLE
1410 array_free (idle, [i]); 2342 array_free (idle, [i]);
1411#endif 2343#endif
1412 } 2344 }
1413 2345
1414 ev_free (anfds); anfdmax = 0; 2346 ev_free (anfds); anfds = 0; anfdmax = 0;
1415 2347
1416 /* have to use the microsoft-never-gets-it-right macro */ 2348 /* have to use the microsoft-never-gets-it-right macro */
2349 array_free (rfeed, EMPTY);
1417 array_free (fdchange, EMPTY); 2350 array_free (fdchange, EMPTY);
1418 array_free (timer, EMPTY); 2351 array_free (timer, EMPTY);
1419#if EV_PERIODIC_ENABLE 2352#if EV_PERIODIC_ENABLE
1420 array_free (periodic, EMPTY); 2353 array_free (periodic, EMPTY);
1421#endif 2354#endif
1422#if EV_FORK_ENABLE 2355#if EV_FORK_ENABLE
1423 array_free (fork, EMPTY); 2356 array_free (fork, EMPTY);
1424#endif 2357#endif
2358#if EV_CLEANUP_ENABLE
2359 array_free (cleanup, EMPTY);
2360#endif
1425 array_free (prepare, EMPTY); 2361 array_free (prepare, EMPTY);
1426 array_free (check, EMPTY); 2362 array_free (check, EMPTY);
1427#if EV_ASYNC_ENABLE 2363#if EV_ASYNC_ENABLE
1428 array_free (async, EMPTY); 2364 array_free (async, EMPTY);
1429#endif 2365#endif
1430 2366
1431 backend = 0; 2367 backend = 0;
2368
2369#if EV_MULTIPLICITY
2370 if (ev_is_default_loop (EV_A))
2371#endif
2372 ev_default_loop_ptr = 0;
2373#if EV_MULTIPLICITY
2374 else
2375 ev_free (EV_A);
2376#endif
1432} 2377}
1433 2378
1434#if EV_USE_INOTIFY 2379#if EV_USE_INOTIFY
1435void inline_size infy_fork (EV_P); 2380inline_size void infy_fork (EV_P);
1436#endif 2381#endif
1437 2382
1438void inline_size 2383inline_size void
1439loop_fork (EV_P) 2384loop_fork (EV_P)
1440{ 2385{
1441#if EV_USE_PORT 2386#if EV_USE_PORT
1442 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2387 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1443#endif 2388#endif
… …
1449#endif 2394#endif
1450#if EV_USE_INOTIFY 2395#if EV_USE_INOTIFY
1451 infy_fork (EV_A); 2396 infy_fork (EV_A);
1452#endif 2397#endif
1453 2398
1454 if (ev_is_active (&pipeev)) 2399 if (ev_is_active (&pipe_w))
1455 { 2400 {
1456 /* this "locks" the handlers against writing to the pipe */ 2401 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1457 /* while we modify the fd vars */
1458 gotsig = 1;
1459#if EV_ASYNC_ENABLE
1460 gotasync = 1;
1461#endif
1462 2402
1463 ev_ref (EV_A); 2403 ev_ref (EV_A);
1464 ev_io_stop (EV_A_ &pipeev); 2404 ev_io_stop (EV_A_ &pipe_w);
1465 2405
1466#if EV_USE_EVENTFD 2406#if EV_USE_EVENTFD
1467 if (evfd >= 0) 2407 if (evfd >= 0)
1468 close (evfd); 2408 close (evfd);
1469#endif 2409#endif
1470 2410
1471 if (evpipe [0] >= 0) 2411 if (evpipe [0] >= 0)
1472 { 2412 {
1473 close (evpipe [0]); 2413 EV_WIN32_CLOSE_FD (evpipe [0]);
1474 close (evpipe [1]); 2414 EV_WIN32_CLOSE_FD (evpipe [1]);
1475 } 2415 }
1476 2416
2417#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1477 evpipe_init (EV_A); 2418 evpipe_init (EV_A);
1478 /* now iterate over everything, in case we missed something */ 2419 /* now iterate over everything, in case we missed something */
1479 pipecb (EV_A_ &pipeev, EV_READ); 2420 pipecb (EV_A_ &pipe_w, EV_READ);
2421#endif
1480 } 2422 }
1481 2423
1482 postfork = 0; 2424 postfork = 0;
1483} 2425}
1484 2426
1485#if EV_MULTIPLICITY 2427#if EV_MULTIPLICITY
1486 2428
1487struct ev_loop * 2429struct ev_loop * ecb_cold
1488ev_loop_new (unsigned int flags) 2430ev_loop_new (unsigned int flags)
1489{ 2431{
1490 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2432 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1491 2433
1492 memset (loop, 0, sizeof (struct ev_loop)); 2434 memset (EV_A, 0, sizeof (struct ev_loop));
1493
1494 loop_init (EV_A_ flags); 2435 loop_init (EV_A_ flags);
1495 2436
1496 if (ev_backend (EV_A)) 2437 if (ev_backend (EV_A))
1497 return loop; 2438 return EV_A;
1498 2439
2440 ev_free (EV_A);
1499 return 0; 2441 return 0;
1500} 2442}
1501 2443
1502void 2444#endif /* multiplicity */
1503ev_loop_destroy (EV_P)
1504{
1505 loop_destroy (EV_A);
1506 ev_free (loop);
1507}
1508
1509void
1510ev_loop_fork (EV_P)
1511{
1512 postfork = 1; /* must be in line with ev_default_fork */
1513}
1514 2445
1515#if EV_VERIFY 2446#if EV_VERIFY
1516static void noinline 2447static void noinline ecb_cold
1517verify_watcher (EV_P_ W w) 2448verify_watcher (EV_P_ W w)
1518{ 2449{
1519 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2450 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1520 2451
1521 if (w->pending) 2452 if (w->pending)
1522 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2453 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1523} 2454}
1524 2455
1525static void noinline 2456static void noinline ecb_cold
1526verify_heap (EV_P_ ANHE *heap, int N) 2457verify_heap (EV_P_ ANHE *heap, int N)
1527{ 2458{
1528 int i; 2459 int i;
1529 2460
1530 for (i = HEAP0; i < N + HEAP0; ++i) 2461 for (i = HEAP0; i < N + HEAP0; ++i)
1531 { 2462 {
1532 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 2463 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1533 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 2464 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1534 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 2465 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1535 2466
1536 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2467 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1537 } 2468 }
1538} 2469}
1539 2470
1540static void noinline 2471static void noinline ecb_cold
1541array_verify (EV_P_ W *ws, int cnt) 2472array_verify (EV_P_ W *ws, int cnt)
1542{ 2473{
1543 while (cnt--) 2474 while (cnt--)
1544 { 2475 {
1545 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2476 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1546 verify_watcher (EV_A_ ws [cnt]); 2477 verify_watcher (EV_A_ ws [cnt]);
1547 } 2478 }
1548} 2479}
1549#endif 2480#endif
1550 2481
1551void 2482#if EV_FEATURE_API
2483void ecb_cold
1552ev_loop_verify (EV_P) 2484ev_verify (EV_P)
1553{ 2485{
1554#if EV_VERIFY 2486#if EV_VERIFY
1555 int i; 2487 int i;
1556 WL w; 2488 WL w;
1557 2489
1558 assert (activecnt >= -1); 2490 assert (activecnt >= -1);
1559 2491
1560 assert (fdchangemax >= fdchangecnt); 2492 assert (fdchangemax >= fdchangecnt);
1561 for (i = 0; i < fdchangecnt; ++i) 2493 for (i = 0; i < fdchangecnt; ++i)
1562 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 2494 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1563 2495
1564 assert (anfdmax >= 0); 2496 assert (anfdmax >= 0);
1565 for (i = 0; i < anfdmax; ++i) 2497 for (i = 0; i < anfdmax; ++i)
1566 for (w = anfds [i].head; w; w = w->next) 2498 for (w = anfds [i].head; w; w = w->next)
1567 { 2499 {
1568 verify_watcher (EV_A_ (W)w); 2500 verify_watcher (EV_A_ (W)w);
1569 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 2501 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1570 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2502 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1571 } 2503 }
1572 2504
1573 assert (timermax >= timercnt); 2505 assert (timermax >= timercnt);
1574 verify_heap (EV_A_ timers, timercnt); 2506 verify_heap (EV_A_ timers, timercnt);
1575 2507
… …
1591#if EV_FORK_ENABLE 2523#if EV_FORK_ENABLE
1592 assert (forkmax >= forkcnt); 2524 assert (forkmax >= forkcnt);
1593 array_verify (EV_A_ (W *)forks, forkcnt); 2525 array_verify (EV_A_ (W *)forks, forkcnt);
1594#endif 2526#endif
1595 2527
2528#if EV_CLEANUP_ENABLE
2529 assert (cleanupmax >= cleanupcnt);
2530 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2531#endif
2532
1596#if EV_ASYNC_ENABLE 2533#if EV_ASYNC_ENABLE
1597 assert (asyncmax >= asynccnt); 2534 assert (asyncmax >= asynccnt);
1598 array_verify (EV_A_ (W *)asyncs, asynccnt); 2535 array_verify (EV_A_ (W *)asyncs, asynccnt);
1599#endif 2536#endif
1600 2537
2538#if EV_PREPARE_ENABLE
1601 assert (preparemax >= preparecnt); 2539 assert (preparemax >= preparecnt);
1602 array_verify (EV_A_ (W *)prepares, preparecnt); 2540 array_verify (EV_A_ (W *)prepares, preparecnt);
2541#endif
1603 2542
2543#if EV_CHECK_ENABLE
1604 assert (checkmax >= checkcnt); 2544 assert (checkmax >= checkcnt);
1605 array_verify (EV_A_ (W *)checks, checkcnt); 2545 array_verify (EV_A_ (W *)checks, checkcnt);
2546#endif
1606 2547
1607# if 0 2548# if 0
2549#if EV_CHILD_ENABLE
1608 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2550 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1609 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2551 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2552#endif
1610# endif 2553# endif
1611#endif 2554#endif
1612} 2555}
1613 2556#endif
1614#endif /* multiplicity */
1615 2557
1616#if EV_MULTIPLICITY 2558#if EV_MULTIPLICITY
1617struct ev_loop * 2559struct ev_loop * ecb_cold
1618ev_default_loop_init (unsigned int flags)
1619#else 2560#else
1620int 2561int
2562#endif
1621ev_default_loop (unsigned int flags) 2563ev_default_loop (unsigned int flags)
1622#endif
1623{ 2564{
1624 if (!ev_default_loop_ptr) 2565 if (!ev_default_loop_ptr)
1625 { 2566 {
1626#if EV_MULTIPLICITY 2567#if EV_MULTIPLICITY
1627 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2568 EV_P = ev_default_loop_ptr = &default_loop_struct;
1628#else 2569#else
1629 ev_default_loop_ptr = 1; 2570 ev_default_loop_ptr = 1;
1630#endif 2571#endif
1631 2572
1632 loop_init (EV_A_ flags); 2573 loop_init (EV_A_ flags);
1633 2574
1634 if (ev_backend (EV_A)) 2575 if (ev_backend (EV_A))
1635 { 2576 {
1636#ifndef _WIN32 2577#if EV_CHILD_ENABLE
1637 ev_signal_init (&childev, childcb, SIGCHLD); 2578 ev_signal_init (&childev, childcb, SIGCHLD);
1638 ev_set_priority (&childev, EV_MAXPRI); 2579 ev_set_priority (&childev, EV_MAXPRI);
1639 ev_signal_start (EV_A_ &childev); 2580 ev_signal_start (EV_A_ &childev);
1640 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2581 ev_unref (EV_A); /* child watcher should not keep loop alive */
1641#endif 2582#endif
… …
1646 2587
1647 return ev_default_loop_ptr; 2588 return ev_default_loop_ptr;
1648} 2589}
1649 2590
1650void 2591void
1651ev_default_destroy (void) 2592ev_loop_fork (EV_P)
1652{ 2593{
1653#if EV_MULTIPLICITY
1654 struct ev_loop *loop = ev_default_loop_ptr;
1655#endif
1656
1657#ifndef _WIN32
1658 ev_ref (EV_A); /* child watcher */
1659 ev_signal_stop (EV_A_ &childev);
1660#endif
1661
1662 loop_destroy (EV_A);
1663}
1664
1665void
1666ev_default_fork (void)
1667{
1668#if EV_MULTIPLICITY
1669 struct ev_loop *loop = ev_default_loop_ptr;
1670#endif
1671
1672 if (backend)
1673 postfork = 1; /* must be in line with ev_loop_fork */ 2594 postfork = 1; /* must be in line with ev_default_fork */
1674} 2595}
1675 2596
1676/*****************************************************************************/ 2597/*****************************************************************************/
1677 2598
1678void 2599void
1679ev_invoke (EV_P_ void *w, int revents) 2600ev_invoke (EV_P_ void *w, int revents)
1680{ 2601{
1681 EV_CB_INVOKE ((W)w, revents); 2602 EV_CB_INVOKE ((W)w, revents);
1682} 2603}
1683 2604
1684void inline_speed 2605unsigned int
1685call_pending (EV_P) 2606ev_pending_count (EV_P)
2607{
2608 int pri;
2609 unsigned int count = 0;
2610
2611 for (pri = NUMPRI; pri--; )
2612 count += pendingcnt [pri];
2613
2614 return count;
2615}
2616
2617void noinline
2618ev_invoke_pending (EV_P)
1686{ 2619{
1687 int pri; 2620 int pri;
1688 2621
1689 for (pri = NUMPRI; pri--; ) 2622 for (pri = NUMPRI; pri--; )
1690 while (pendingcnt [pri]) 2623 while (pendingcnt [pri])
1691 { 2624 {
1692 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2625 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1693 2626
1694 if (expect_true (p->w))
1695 {
1696 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1697
1698 p->w->pending = 0; 2627 p->w->pending = 0;
1699 EV_CB_INVOKE (p->w, p->events); 2628 EV_CB_INVOKE (p->w, p->events);
1700 EV_FREQUENT_CHECK; 2629 EV_FREQUENT_CHECK;
1701 }
1702 } 2630 }
1703} 2631}
1704 2632
1705#if EV_IDLE_ENABLE 2633#if EV_IDLE_ENABLE
1706void inline_size 2634/* make idle watchers pending. this handles the "call-idle */
2635/* only when higher priorities are idle" logic */
2636inline_size void
1707idle_reify (EV_P) 2637idle_reify (EV_P)
1708{ 2638{
1709 if (expect_false (idleall)) 2639 if (expect_false (idleall))
1710 { 2640 {
1711 int pri; 2641 int pri;
… …
1723 } 2653 }
1724 } 2654 }
1725} 2655}
1726#endif 2656#endif
1727 2657
1728void inline_size 2658/* make timers pending */
2659inline_size void
1729timers_reify (EV_P) 2660timers_reify (EV_P)
1730{ 2661{
1731 EV_FREQUENT_CHECK; 2662 EV_FREQUENT_CHECK;
1732 2663
1733 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2664 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1734 { 2665 {
1735 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2666 do
1736
1737 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1738
1739 /* first reschedule or stop timer */
1740 if (w->repeat)
1741 { 2667 {
2668 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2669
2670 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2671
2672 /* first reschedule or stop timer */
2673 if (w->repeat)
2674 {
1742 ev_at (w) += w->repeat; 2675 ev_at (w) += w->repeat;
1743 if (ev_at (w) < mn_now) 2676 if (ev_at (w) < mn_now)
1744 ev_at (w) = mn_now; 2677 ev_at (w) = mn_now;
1745 2678
1746 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2679 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1747 2680
1748 ANHE_at_cache (timers [HEAP0]); 2681 ANHE_at_cache (timers [HEAP0]);
1749 downheap (timers, timercnt, HEAP0); 2682 downheap (timers, timercnt, HEAP0);
2683 }
2684 else
2685 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2686
2687 EV_FREQUENT_CHECK;
2688 feed_reverse (EV_A_ (W)w);
1750 } 2689 }
1751 else 2690 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1752 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1753 2691
1754 EV_FREQUENT_CHECK; 2692 feed_reverse_done (EV_A_ EV_TIMER);
1755 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1756 } 2693 }
1757} 2694}
1758 2695
1759#if EV_PERIODIC_ENABLE 2696#if EV_PERIODIC_ENABLE
1760void inline_size 2697
2698static void noinline
2699periodic_recalc (EV_P_ ev_periodic *w)
2700{
2701 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2702 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2703
2704 /* the above almost always errs on the low side */
2705 while (at <= ev_rt_now)
2706 {
2707 ev_tstamp nat = at + w->interval;
2708
2709 /* when resolution fails us, we use ev_rt_now */
2710 if (expect_false (nat == at))
2711 {
2712 at = ev_rt_now;
2713 break;
2714 }
2715
2716 at = nat;
2717 }
2718
2719 ev_at (w) = at;
2720}
2721
2722/* make periodics pending */
2723inline_size void
1761periodics_reify (EV_P) 2724periodics_reify (EV_P)
1762{ 2725{
1763 EV_FREQUENT_CHECK; 2726 EV_FREQUENT_CHECK;
1764 2727
1765 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2728 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1766 { 2729 {
1767 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2730 int feed_count = 0;
1768 2731
1769 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2732 do
1770
1771 /* first reschedule or stop timer */
1772 if (w->reschedule_cb)
1773 { 2733 {
2734 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2735
2736 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2737
2738 /* first reschedule or stop timer */
2739 if (w->reschedule_cb)
2740 {
1774 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2741 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1775 2742
1776 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2743 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1777 2744
1778 ANHE_at_cache (periodics [HEAP0]); 2745 ANHE_at_cache (periodics [HEAP0]);
1779 downheap (periodics, periodiccnt, HEAP0); 2746 downheap (periodics, periodiccnt, HEAP0);
2747 }
2748 else if (w->interval)
2749 {
2750 periodic_recalc (EV_A_ w);
2751 ANHE_at_cache (periodics [HEAP0]);
2752 downheap (periodics, periodiccnt, HEAP0);
2753 }
2754 else
2755 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2756
2757 EV_FREQUENT_CHECK;
2758 feed_reverse (EV_A_ (W)w);
1780 } 2759 }
1781 else if (w->interval) 2760 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1782 {
1783 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1784 /* if next trigger time is not sufficiently in the future, put it there */
1785 /* this might happen because of floating point inexactness */
1786 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1787 {
1788 ev_at (w) += w->interval;
1789 2761
1790 /* if interval is unreasonably low we might still have a time in the past */
1791 /* so correct this. this will make the periodic very inexact, but the user */
1792 /* has effectively asked to get triggered more often than possible */
1793 if (ev_at (w) < ev_rt_now)
1794 ev_at (w) = ev_rt_now;
1795 }
1796
1797 ANHE_at_cache (periodics [HEAP0]);
1798 downheap (periodics, periodiccnt, HEAP0);
1799 }
1800 else
1801 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1802
1803 EV_FREQUENT_CHECK;
1804 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2762 feed_reverse_done (EV_A_ EV_PERIODIC);
1805 } 2763 }
1806} 2764}
1807 2765
2766/* simply recalculate all periodics */
2767/* TODO: maybe ensure that at least one event happens when jumping forward? */
1808static void noinline 2768static void noinline ecb_cold
1809periodics_reschedule (EV_P) 2769periodics_reschedule (EV_P)
1810{ 2770{
1811 int i; 2771 int i;
1812 2772
1813 /* adjust periodics after time jump */ 2773 /* adjust periodics after time jump */
… …
1816 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2776 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1817 2777
1818 if (w->reschedule_cb) 2778 if (w->reschedule_cb)
1819 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2779 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1820 else if (w->interval) 2780 else if (w->interval)
1821 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2781 periodic_recalc (EV_A_ w);
1822 2782
1823 ANHE_at_cache (periodics [i]); 2783 ANHE_at_cache (periodics [i]);
1824 } 2784 }
1825 2785
1826 reheap (periodics, periodiccnt); 2786 reheap (periodics, periodiccnt);
1827} 2787}
1828#endif 2788#endif
1829 2789
1830void inline_speed 2790/* adjust all timers by a given offset */
2791static void noinline ecb_cold
2792timers_reschedule (EV_P_ ev_tstamp adjust)
2793{
2794 int i;
2795
2796 for (i = 0; i < timercnt; ++i)
2797 {
2798 ANHE *he = timers + i + HEAP0;
2799 ANHE_w (*he)->at += adjust;
2800 ANHE_at_cache (*he);
2801 }
2802}
2803
2804/* fetch new monotonic and realtime times from the kernel */
2805/* also detect if there was a timejump, and act accordingly */
2806inline_speed void
1831time_update (EV_P_ ev_tstamp max_block) 2807time_update (EV_P_ ev_tstamp max_block)
1832{ 2808{
1833 int i;
1834
1835#if EV_USE_MONOTONIC 2809#if EV_USE_MONOTONIC
1836 if (expect_true (have_monotonic)) 2810 if (expect_true (have_monotonic))
1837 { 2811 {
2812 int i;
1838 ev_tstamp odiff = rtmn_diff; 2813 ev_tstamp odiff = rtmn_diff;
1839 2814
1840 mn_now = get_clock (); 2815 mn_now = get_clock ();
1841 2816
1842 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2817 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1858 * doesn't hurt either as we only do this on time-jumps or 2833 * doesn't hurt either as we only do this on time-jumps or
1859 * in the unlikely event of having been preempted here. 2834 * in the unlikely event of having been preempted here.
1860 */ 2835 */
1861 for (i = 4; --i; ) 2836 for (i = 4; --i; )
1862 { 2837 {
2838 ev_tstamp diff;
1863 rtmn_diff = ev_rt_now - mn_now; 2839 rtmn_diff = ev_rt_now - mn_now;
1864 2840
2841 diff = odiff - rtmn_diff;
2842
1865 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2843 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1866 return; /* all is well */ 2844 return; /* all is well */
1867 2845
1868 ev_rt_now = ev_time (); 2846 ev_rt_now = ev_time ();
1869 mn_now = get_clock (); 2847 mn_now = get_clock ();
1870 now_floor = mn_now; 2848 now_floor = mn_now;
1871 } 2849 }
1872 2850
2851 /* no timer adjustment, as the monotonic clock doesn't jump */
2852 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1873# if EV_PERIODIC_ENABLE 2853# if EV_PERIODIC_ENABLE
1874 periodics_reschedule (EV_A); 2854 periodics_reschedule (EV_A);
1875# endif 2855# endif
1876 /* no timer adjustment, as the monotonic clock doesn't jump */
1877 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1878 } 2856 }
1879 else 2857 else
1880#endif 2858#endif
1881 { 2859 {
1882 ev_rt_now = ev_time (); 2860 ev_rt_now = ev_time ();
1883 2861
1884 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2862 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1885 { 2863 {
2864 /* adjust timers. this is easy, as the offset is the same for all of them */
2865 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1886#if EV_PERIODIC_ENABLE 2866#if EV_PERIODIC_ENABLE
1887 periodics_reschedule (EV_A); 2867 periodics_reschedule (EV_A);
1888#endif 2868#endif
1889 /* adjust timers. this is easy, as the offset is the same for all of them */
1890 for (i = 0; i < timercnt; ++i)
1891 {
1892 ANHE *he = timers + i + HEAP0;
1893 ANHE_w (*he)->at += ev_rt_now - mn_now;
1894 ANHE_at_cache (*he);
1895 }
1896 } 2869 }
1897 2870
1898 mn_now = ev_rt_now; 2871 mn_now = ev_rt_now;
1899 } 2872 }
1900} 2873}
1901 2874
1902void 2875void
1903ev_ref (EV_P)
1904{
1905 ++activecnt;
1906}
1907
1908void
1909ev_unref (EV_P)
1910{
1911 --activecnt;
1912}
1913
1914static int loop_done;
1915
1916void
1917ev_loop (EV_P_ int flags) 2876ev_run (EV_P_ int flags)
1918{ 2877{
2878#if EV_FEATURE_API
2879 ++loop_depth;
2880#endif
2881
2882 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2883
1919 loop_done = EVUNLOOP_CANCEL; 2884 loop_done = EVBREAK_CANCEL;
1920 2885
1921 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2886 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1922 2887
1923 do 2888 do
1924 { 2889 {
1925#if EV_VERIFY >= 2 2890#if EV_VERIFY >= 2
1926 ev_loop_verify (EV_A); 2891 ev_verify (EV_A);
1927#endif 2892#endif
1928 2893
1929#ifndef _WIN32 2894#ifndef _WIN32
1930 if (expect_false (curpid)) /* penalise the forking check even more */ 2895 if (expect_false (curpid)) /* penalise the forking check even more */
1931 if (expect_false (getpid () != curpid)) 2896 if (expect_false (getpid () != curpid))
… …
1939 /* we might have forked, so queue fork handlers */ 2904 /* we might have forked, so queue fork handlers */
1940 if (expect_false (postfork)) 2905 if (expect_false (postfork))
1941 if (forkcnt) 2906 if (forkcnt)
1942 { 2907 {
1943 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2908 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1944 call_pending (EV_A); 2909 EV_INVOKE_PENDING;
1945 } 2910 }
1946#endif 2911#endif
1947 2912
2913#if EV_PREPARE_ENABLE
1948 /* queue prepare watchers (and execute them) */ 2914 /* queue prepare watchers (and execute them) */
1949 if (expect_false (preparecnt)) 2915 if (expect_false (preparecnt))
1950 { 2916 {
1951 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2917 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1952 call_pending (EV_A); 2918 EV_INVOKE_PENDING;
1953 } 2919 }
2920#endif
1954 2921
1955 if (expect_false (!activecnt)) 2922 if (expect_false (loop_done))
1956 break; 2923 break;
1957 2924
1958 /* we might have forked, so reify kernel state if necessary */ 2925 /* we might have forked, so reify kernel state if necessary */
1959 if (expect_false (postfork)) 2926 if (expect_false (postfork))
1960 loop_fork (EV_A); 2927 loop_fork (EV_A);
… …
1965 /* calculate blocking time */ 2932 /* calculate blocking time */
1966 { 2933 {
1967 ev_tstamp waittime = 0.; 2934 ev_tstamp waittime = 0.;
1968 ev_tstamp sleeptime = 0.; 2935 ev_tstamp sleeptime = 0.;
1969 2936
2937 /* remember old timestamp for io_blocktime calculation */
2938 ev_tstamp prev_mn_now = mn_now;
2939
2940 /* update time to cancel out callback processing overhead */
2941 time_update (EV_A_ 1e100);
2942
2943 /* from now on, we want a pipe-wake-up */
2944 pipe_write_wanted = 1;
2945
2946 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2947
1970 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2948 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1971 { 2949 {
1972 /* update time to cancel out callback processing overhead */
1973 time_update (EV_A_ 1e100);
1974
1975 waittime = MAX_BLOCKTIME; 2950 waittime = MAX_BLOCKTIME;
1976 2951
1977 if (timercnt) 2952 if (timercnt)
1978 { 2953 {
1979 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2954 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1980 if (waittime > to) waittime = to; 2955 if (waittime > to) waittime = to;
1981 } 2956 }
1982 2957
1983#if EV_PERIODIC_ENABLE 2958#if EV_PERIODIC_ENABLE
1984 if (periodiccnt) 2959 if (periodiccnt)
1985 { 2960 {
1986 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2961 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1987 if (waittime > to) waittime = to; 2962 if (waittime > to) waittime = to;
1988 } 2963 }
1989#endif 2964#endif
1990 2965
2966 /* don't let timeouts decrease the waittime below timeout_blocktime */
1991 if (expect_false (waittime < timeout_blocktime)) 2967 if (expect_false (waittime < timeout_blocktime))
1992 waittime = timeout_blocktime; 2968 waittime = timeout_blocktime;
1993 2969
1994 sleeptime = waittime - backend_fudge; 2970 /* at this point, we NEED to wait, so we have to ensure */
2971 /* to pass a minimum nonzero value to the backend */
2972 if (expect_false (waittime < backend_mintime))
2973 waittime = backend_mintime;
1995 2974
2975 /* extra check because io_blocktime is commonly 0 */
1996 if (expect_true (sleeptime > io_blocktime)) 2976 if (expect_false (io_blocktime))
1997 sleeptime = io_blocktime;
1998
1999 if (sleeptime)
2000 { 2977 {
2978 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2979
2980 if (sleeptime > waittime - backend_mintime)
2981 sleeptime = waittime - backend_mintime;
2982
2983 if (expect_true (sleeptime > 0.))
2984 {
2001 ev_sleep (sleeptime); 2985 ev_sleep (sleeptime);
2002 waittime -= sleeptime; 2986 waittime -= sleeptime;
2987 }
2003 } 2988 }
2004 } 2989 }
2005 2990
2991#if EV_FEATURE_API
2006 ++loop_count; 2992 ++loop_count;
2993#endif
2994 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2007 backend_poll (EV_A_ waittime); 2995 backend_poll (EV_A_ waittime);
2996 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2997
2998 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2999
3000 if (pipe_write_skipped)
3001 {
3002 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3003 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3004 }
3005
2008 3006
2009 /* update ev_rt_now, do magic */ 3007 /* update ev_rt_now, do magic */
2010 time_update (EV_A_ waittime + sleeptime); 3008 time_update (EV_A_ waittime + sleeptime);
2011 } 3009 }
2012 3010
… …
2019#if EV_IDLE_ENABLE 3017#if EV_IDLE_ENABLE
2020 /* queue idle watchers unless other events are pending */ 3018 /* queue idle watchers unless other events are pending */
2021 idle_reify (EV_A); 3019 idle_reify (EV_A);
2022#endif 3020#endif
2023 3021
3022#if EV_CHECK_ENABLE
2024 /* queue check watchers, to be executed first */ 3023 /* queue check watchers, to be executed first */
2025 if (expect_false (checkcnt)) 3024 if (expect_false (checkcnt))
2026 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3025 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3026#endif
2027 3027
2028 call_pending (EV_A); 3028 EV_INVOKE_PENDING;
2029 } 3029 }
2030 while (expect_true ( 3030 while (expect_true (
2031 activecnt 3031 activecnt
2032 && !loop_done 3032 && !loop_done
2033 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3033 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2034 )); 3034 ));
2035 3035
2036 if (loop_done == EVUNLOOP_ONE) 3036 if (loop_done == EVBREAK_ONE)
2037 loop_done = EVUNLOOP_CANCEL; 3037 loop_done = EVBREAK_CANCEL;
3038
3039#if EV_FEATURE_API
3040 --loop_depth;
3041#endif
2038} 3042}
2039 3043
2040void 3044void
2041ev_unloop (EV_P_ int how) 3045ev_break (EV_P_ int how)
2042{ 3046{
2043 loop_done = how; 3047 loop_done = how;
2044} 3048}
2045 3049
3050void
3051ev_ref (EV_P)
3052{
3053 ++activecnt;
3054}
3055
3056void
3057ev_unref (EV_P)
3058{
3059 --activecnt;
3060}
3061
3062void
3063ev_now_update (EV_P)
3064{
3065 time_update (EV_A_ 1e100);
3066}
3067
3068void
3069ev_suspend (EV_P)
3070{
3071 ev_now_update (EV_A);
3072}
3073
3074void
3075ev_resume (EV_P)
3076{
3077 ev_tstamp mn_prev = mn_now;
3078
3079 ev_now_update (EV_A);
3080 timers_reschedule (EV_A_ mn_now - mn_prev);
3081#if EV_PERIODIC_ENABLE
3082 /* TODO: really do this? */
3083 periodics_reschedule (EV_A);
3084#endif
3085}
3086
2046/*****************************************************************************/ 3087/*****************************************************************************/
3088/* singly-linked list management, used when the expected list length is short */
2047 3089
2048void inline_size 3090inline_size void
2049wlist_add (WL *head, WL elem) 3091wlist_add (WL *head, WL elem)
2050{ 3092{
2051 elem->next = *head; 3093 elem->next = *head;
2052 *head = elem; 3094 *head = elem;
2053} 3095}
2054 3096
2055void inline_size 3097inline_size void
2056wlist_del (WL *head, WL elem) 3098wlist_del (WL *head, WL elem)
2057{ 3099{
2058 while (*head) 3100 while (*head)
2059 { 3101 {
2060 if (*head == elem) 3102 if (expect_true (*head == elem))
2061 { 3103 {
2062 *head = elem->next; 3104 *head = elem->next;
2063 return; 3105 break;
2064 } 3106 }
2065 3107
2066 head = &(*head)->next; 3108 head = &(*head)->next;
2067 } 3109 }
2068} 3110}
2069 3111
2070void inline_speed 3112/* internal, faster, version of ev_clear_pending */
3113inline_speed void
2071clear_pending (EV_P_ W w) 3114clear_pending (EV_P_ W w)
2072{ 3115{
2073 if (w->pending) 3116 if (w->pending)
2074 { 3117 {
2075 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3118 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2076 w->pending = 0; 3119 w->pending = 0;
2077 } 3120 }
2078} 3121}
2079 3122
2080int 3123int
… …
2084 int pending = w_->pending; 3127 int pending = w_->pending;
2085 3128
2086 if (expect_true (pending)) 3129 if (expect_true (pending))
2087 { 3130 {
2088 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3131 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3132 p->w = (W)&pending_w;
2089 w_->pending = 0; 3133 w_->pending = 0;
2090 p->w = 0;
2091 return p->events; 3134 return p->events;
2092 } 3135 }
2093 else 3136 else
2094 return 0; 3137 return 0;
2095} 3138}
2096 3139
2097void inline_size 3140inline_size void
2098pri_adjust (EV_P_ W w) 3141pri_adjust (EV_P_ W w)
2099{ 3142{
2100 int pri = w->priority; 3143 int pri = ev_priority (w);
2101 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3144 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2102 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3145 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2103 w->priority = pri; 3146 ev_set_priority (w, pri);
2104} 3147}
2105 3148
2106void inline_speed 3149inline_speed void
2107ev_start (EV_P_ W w, int active) 3150ev_start (EV_P_ W w, int active)
2108{ 3151{
2109 pri_adjust (EV_A_ w); 3152 pri_adjust (EV_A_ w);
2110 w->active = active; 3153 w->active = active;
2111 ev_ref (EV_A); 3154 ev_ref (EV_A);
2112} 3155}
2113 3156
2114void inline_size 3157inline_size void
2115ev_stop (EV_P_ W w) 3158ev_stop (EV_P_ W w)
2116{ 3159{
2117 ev_unref (EV_A); 3160 ev_unref (EV_A);
2118 w->active = 0; 3161 w->active = 0;
2119} 3162}
… …
2126 int fd = w->fd; 3169 int fd = w->fd;
2127 3170
2128 if (expect_false (ev_is_active (w))) 3171 if (expect_false (ev_is_active (w)))
2129 return; 3172 return;
2130 3173
2131 assert (("ev_io_start called with negative fd", fd >= 0)); 3174 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3175 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2132 3176
2133 EV_FREQUENT_CHECK; 3177 EV_FREQUENT_CHECK;
2134 3178
2135 ev_start (EV_A_ (W)w, 1); 3179 ev_start (EV_A_ (W)w, 1);
2136 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 3180 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2137 wlist_add (&anfds[fd].head, (WL)w); 3181 wlist_add (&anfds[fd].head, (WL)w);
2138 3182
2139 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 3183 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2140 w->events &= ~EV_IOFDSET; 3184 w->events &= ~EV__IOFDSET;
2141 3185
2142 EV_FREQUENT_CHECK; 3186 EV_FREQUENT_CHECK;
2143} 3187}
2144 3188
2145void noinline 3189void noinline
… …
2147{ 3191{
2148 clear_pending (EV_A_ (W)w); 3192 clear_pending (EV_A_ (W)w);
2149 if (expect_false (!ev_is_active (w))) 3193 if (expect_false (!ev_is_active (w)))
2150 return; 3194 return;
2151 3195
2152 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3196 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2153 3197
2154 EV_FREQUENT_CHECK; 3198 EV_FREQUENT_CHECK;
2155 3199
2156 wlist_del (&anfds[w->fd].head, (WL)w); 3200 wlist_del (&anfds[w->fd].head, (WL)w);
2157 ev_stop (EV_A_ (W)w); 3201 ev_stop (EV_A_ (W)w);
2158 3202
2159 fd_change (EV_A_ w->fd, 1); 3203 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2160 3204
2161 EV_FREQUENT_CHECK; 3205 EV_FREQUENT_CHECK;
2162} 3206}
2163 3207
2164void noinline 3208void noinline
… …
2167 if (expect_false (ev_is_active (w))) 3211 if (expect_false (ev_is_active (w)))
2168 return; 3212 return;
2169 3213
2170 ev_at (w) += mn_now; 3214 ev_at (w) += mn_now;
2171 3215
2172 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 3216 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2173 3217
2174 EV_FREQUENT_CHECK; 3218 EV_FREQUENT_CHECK;
2175 3219
2176 ++timercnt; 3220 ++timercnt;
2177 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3221 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2180 ANHE_at_cache (timers [ev_active (w)]); 3224 ANHE_at_cache (timers [ev_active (w)]);
2181 upheap (timers, ev_active (w)); 3225 upheap (timers, ev_active (w));
2182 3226
2183 EV_FREQUENT_CHECK; 3227 EV_FREQUENT_CHECK;
2184 3228
2185 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3229 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2186} 3230}
2187 3231
2188void noinline 3232void noinline
2189ev_timer_stop (EV_P_ ev_timer *w) 3233ev_timer_stop (EV_P_ ev_timer *w)
2190{ 3234{
… …
2195 EV_FREQUENT_CHECK; 3239 EV_FREQUENT_CHECK;
2196 3240
2197 { 3241 {
2198 int active = ev_active (w); 3242 int active = ev_active (w);
2199 3243
2200 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 3244 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2201 3245
2202 --timercnt; 3246 --timercnt;
2203 3247
2204 if (expect_true (active < timercnt + HEAP0)) 3248 if (expect_true (active < timercnt + HEAP0))
2205 { 3249 {
2206 timers [active] = timers [timercnt + HEAP0]; 3250 timers [active] = timers [timercnt + HEAP0];
2207 adjustheap (timers, timercnt, active); 3251 adjustheap (timers, timercnt, active);
2208 } 3252 }
2209 } 3253 }
2210 3254
2211 EV_FREQUENT_CHECK;
2212
2213 ev_at (w) -= mn_now; 3255 ev_at (w) -= mn_now;
2214 3256
2215 ev_stop (EV_A_ (W)w); 3257 ev_stop (EV_A_ (W)w);
3258
3259 EV_FREQUENT_CHECK;
2216} 3260}
2217 3261
2218void noinline 3262void noinline
2219ev_timer_again (EV_P_ ev_timer *w) 3263ev_timer_again (EV_P_ ev_timer *w)
2220{ 3264{
… …
2238 } 3282 }
2239 3283
2240 EV_FREQUENT_CHECK; 3284 EV_FREQUENT_CHECK;
2241} 3285}
2242 3286
3287ev_tstamp
3288ev_timer_remaining (EV_P_ ev_timer *w)
3289{
3290 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3291}
3292
2243#if EV_PERIODIC_ENABLE 3293#if EV_PERIODIC_ENABLE
2244void noinline 3294void noinline
2245ev_periodic_start (EV_P_ ev_periodic *w) 3295ev_periodic_start (EV_P_ ev_periodic *w)
2246{ 3296{
2247 if (expect_false (ev_is_active (w))) 3297 if (expect_false (ev_is_active (w)))
… …
2249 3299
2250 if (w->reschedule_cb) 3300 if (w->reschedule_cb)
2251 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3301 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2252 else if (w->interval) 3302 else if (w->interval)
2253 { 3303 {
2254 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 3304 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2255 /* this formula differs from the one in periodic_reify because we do not always round up */ 3305 periodic_recalc (EV_A_ w);
2256 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2257 } 3306 }
2258 else 3307 else
2259 ev_at (w) = w->offset; 3308 ev_at (w) = w->offset;
2260 3309
2261 EV_FREQUENT_CHECK; 3310 EV_FREQUENT_CHECK;
… …
2267 ANHE_at_cache (periodics [ev_active (w)]); 3316 ANHE_at_cache (periodics [ev_active (w)]);
2268 upheap (periodics, ev_active (w)); 3317 upheap (periodics, ev_active (w));
2269 3318
2270 EV_FREQUENT_CHECK; 3319 EV_FREQUENT_CHECK;
2271 3320
2272 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3321 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2273} 3322}
2274 3323
2275void noinline 3324void noinline
2276ev_periodic_stop (EV_P_ ev_periodic *w) 3325ev_periodic_stop (EV_P_ ev_periodic *w)
2277{ 3326{
… …
2282 EV_FREQUENT_CHECK; 3331 EV_FREQUENT_CHECK;
2283 3332
2284 { 3333 {
2285 int active = ev_active (w); 3334 int active = ev_active (w);
2286 3335
2287 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 3336 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2288 3337
2289 --periodiccnt; 3338 --periodiccnt;
2290 3339
2291 if (expect_true (active < periodiccnt + HEAP0)) 3340 if (expect_true (active < periodiccnt + HEAP0))
2292 { 3341 {
2293 periodics [active] = periodics [periodiccnt + HEAP0]; 3342 periodics [active] = periodics [periodiccnt + HEAP0];
2294 adjustheap (periodics, periodiccnt, active); 3343 adjustheap (periodics, periodiccnt, active);
2295 } 3344 }
2296 } 3345 }
2297 3346
2298 EV_FREQUENT_CHECK;
2299
2300 ev_stop (EV_A_ (W)w); 3347 ev_stop (EV_A_ (W)w);
3348
3349 EV_FREQUENT_CHECK;
2301} 3350}
2302 3351
2303void noinline 3352void noinline
2304ev_periodic_again (EV_P_ ev_periodic *w) 3353ev_periodic_again (EV_P_ ev_periodic *w)
2305{ 3354{
… …
2311 3360
2312#ifndef SA_RESTART 3361#ifndef SA_RESTART
2313# define SA_RESTART 0 3362# define SA_RESTART 0
2314#endif 3363#endif
2315 3364
3365#if EV_SIGNAL_ENABLE
3366
2316void noinline 3367void noinline
2317ev_signal_start (EV_P_ ev_signal *w) 3368ev_signal_start (EV_P_ ev_signal *w)
2318{ 3369{
2319#if EV_MULTIPLICITY
2320 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2321#endif
2322 if (expect_false (ev_is_active (w))) 3370 if (expect_false (ev_is_active (w)))
2323 return; 3371 return;
2324 3372
2325 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3373 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2326 3374
2327 evpipe_init (EV_A); 3375#if EV_MULTIPLICITY
3376 assert (("libev: a signal must not be attached to two different loops",
3377 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2328 3378
2329 EV_FREQUENT_CHECK; 3379 signals [w->signum - 1].loop = EV_A;
3380#endif
2330 3381
3382 EV_FREQUENT_CHECK;
3383
3384#if EV_USE_SIGNALFD
3385 if (sigfd == -2)
2331 { 3386 {
2332#ifndef _WIN32 3387 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2333 sigset_t full, prev; 3388 if (sigfd < 0 && errno == EINVAL)
2334 sigfillset (&full); 3389 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2335 sigprocmask (SIG_SETMASK, &full, &prev);
2336#endif
2337 3390
2338 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3391 if (sigfd >= 0)
3392 {
3393 fd_intern (sigfd); /* doing it twice will not hurt */
2339 3394
2340#ifndef _WIN32 3395 sigemptyset (&sigfd_set);
2341 sigprocmask (SIG_SETMASK, &prev, 0); 3396
2342#endif 3397 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3398 ev_set_priority (&sigfd_w, EV_MAXPRI);
3399 ev_io_start (EV_A_ &sigfd_w);
3400 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3401 }
2343 } 3402 }
3403
3404 if (sigfd >= 0)
3405 {
3406 /* TODO: check .head */
3407 sigaddset (&sigfd_set, w->signum);
3408 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3409
3410 signalfd (sigfd, &sigfd_set, 0);
3411 }
3412#endif
2344 3413
2345 ev_start (EV_A_ (W)w, 1); 3414 ev_start (EV_A_ (W)w, 1);
2346 wlist_add (&signals [w->signum - 1].head, (WL)w); 3415 wlist_add (&signals [w->signum - 1].head, (WL)w);
2347 3416
2348 if (!((WL)w)->next) 3417 if (!((WL)w)->next)
3418# if EV_USE_SIGNALFD
3419 if (sigfd < 0) /*TODO*/
3420# endif
2349 { 3421 {
2350#if _WIN32 3422# ifdef _WIN32
3423 evpipe_init (EV_A);
3424
2351 signal (w->signum, ev_sighandler); 3425 signal (w->signum, ev_sighandler);
2352#else 3426# else
2353 struct sigaction sa; 3427 struct sigaction sa;
3428
3429 evpipe_init (EV_A);
3430
2354 sa.sa_handler = ev_sighandler; 3431 sa.sa_handler = ev_sighandler;
2355 sigfillset (&sa.sa_mask); 3432 sigfillset (&sa.sa_mask);
2356 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3433 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2357 sigaction (w->signum, &sa, 0); 3434 sigaction (w->signum, &sa, 0);
3435
3436 if (origflags & EVFLAG_NOSIGMASK)
3437 {
3438 sigemptyset (&sa.sa_mask);
3439 sigaddset (&sa.sa_mask, w->signum);
3440 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3441 }
2358#endif 3442#endif
2359 } 3443 }
2360 3444
2361 EV_FREQUENT_CHECK; 3445 EV_FREQUENT_CHECK;
2362} 3446}
2363 3447
2364void noinline 3448void noinline
… …
2372 3456
2373 wlist_del (&signals [w->signum - 1].head, (WL)w); 3457 wlist_del (&signals [w->signum - 1].head, (WL)w);
2374 ev_stop (EV_A_ (W)w); 3458 ev_stop (EV_A_ (W)w);
2375 3459
2376 if (!signals [w->signum - 1].head) 3460 if (!signals [w->signum - 1].head)
3461 {
3462#if EV_MULTIPLICITY
3463 signals [w->signum - 1].loop = 0; /* unattach from signal */
3464#endif
3465#if EV_USE_SIGNALFD
3466 if (sigfd >= 0)
3467 {
3468 sigset_t ss;
3469
3470 sigemptyset (&ss);
3471 sigaddset (&ss, w->signum);
3472 sigdelset (&sigfd_set, w->signum);
3473
3474 signalfd (sigfd, &sigfd_set, 0);
3475 sigprocmask (SIG_UNBLOCK, &ss, 0);
3476 }
3477 else
3478#endif
2377 signal (w->signum, SIG_DFL); 3479 signal (w->signum, SIG_DFL);
3480 }
2378 3481
2379 EV_FREQUENT_CHECK; 3482 EV_FREQUENT_CHECK;
2380} 3483}
3484
3485#endif
3486
3487#if EV_CHILD_ENABLE
2381 3488
2382void 3489void
2383ev_child_start (EV_P_ ev_child *w) 3490ev_child_start (EV_P_ ev_child *w)
2384{ 3491{
2385#if EV_MULTIPLICITY 3492#if EV_MULTIPLICITY
2386 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3493 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2387#endif 3494#endif
2388 if (expect_false (ev_is_active (w))) 3495 if (expect_false (ev_is_active (w)))
2389 return; 3496 return;
2390 3497
2391 EV_FREQUENT_CHECK; 3498 EV_FREQUENT_CHECK;
2392 3499
2393 ev_start (EV_A_ (W)w, 1); 3500 ev_start (EV_A_ (W)w, 1);
2394 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3501 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2395 3502
2396 EV_FREQUENT_CHECK; 3503 EV_FREQUENT_CHECK;
2397} 3504}
2398 3505
2399void 3506void
… …
2403 if (expect_false (!ev_is_active (w))) 3510 if (expect_false (!ev_is_active (w)))
2404 return; 3511 return;
2405 3512
2406 EV_FREQUENT_CHECK; 3513 EV_FREQUENT_CHECK;
2407 3514
2408 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3515 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2409 ev_stop (EV_A_ (W)w); 3516 ev_stop (EV_A_ (W)w);
2410 3517
2411 EV_FREQUENT_CHECK; 3518 EV_FREQUENT_CHECK;
2412} 3519}
3520
3521#endif
2413 3522
2414#if EV_STAT_ENABLE 3523#if EV_STAT_ENABLE
2415 3524
2416# ifdef _WIN32 3525# ifdef _WIN32
2417# undef lstat 3526# undef lstat
2418# define lstat(a,b) _stati64 (a,b) 3527# define lstat(a,b) _stati64 (a,b)
2419# endif 3528# endif
2420 3529
2421#define DEF_STAT_INTERVAL 5.0074891 3530#define DEF_STAT_INTERVAL 5.0074891
3531#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2422#define MIN_STAT_INTERVAL 0.1074891 3532#define MIN_STAT_INTERVAL 0.1074891
2423 3533
2424static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3534static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2425 3535
2426#if EV_USE_INOTIFY 3536#if EV_USE_INOTIFY
2427# define EV_INOTIFY_BUFSIZE 8192 3537
3538/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3539# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2428 3540
2429static void noinline 3541static void noinline
2430infy_add (EV_P_ ev_stat *w) 3542infy_add (EV_P_ ev_stat *w)
2431{ 3543{
2432 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); 3544 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);
2433 3545
2434 if (w->wd < 0) 3546 if (w->wd >= 0)
3547 {
3548 struct statfs sfs;
3549
3550 /* now local changes will be tracked by inotify, but remote changes won't */
3551 /* unless the filesystem is known to be local, we therefore still poll */
3552 /* also do poll on <2.6.25, but with normal frequency */
3553
3554 if (!fs_2625)
3555 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3556 else if (!statfs (w->path, &sfs)
3557 && (sfs.f_type == 0x1373 /* devfs */
3558 || sfs.f_type == 0xEF53 /* ext2/3 */
3559 || sfs.f_type == 0x3153464a /* jfs */
3560 || sfs.f_type == 0x52654973 /* reiser3 */
3561 || sfs.f_type == 0x01021994 /* tempfs */
3562 || sfs.f_type == 0x58465342 /* xfs */))
3563 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3564 else
3565 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2435 { 3566 }
2436 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3567 else
3568 {
3569 /* can't use inotify, continue to stat */
3570 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2437 3571
2438 /* monitor some parent directory for speedup hints */ 3572 /* if path is not there, monitor some parent directory for speedup hints */
2439 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3573 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2440 /* but an efficiency issue only */ 3574 /* but an efficiency issue only */
2441 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3575 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2442 { 3576 {
2443 char path [4096]; 3577 char path [4096];
2444 strcpy (path, w->path); 3578 strcpy (path, w->path);
… …
2448 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3582 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2449 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3583 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2450 3584
2451 char *pend = strrchr (path, '/'); 3585 char *pend = strrchr (path, '/');
2452 3586
2453 if (!pend) 3587 if (!pend || pend == path)
2454 break; /* whoops, no '/', complain to your admin */ 3588 break;
2455 3589
2456 *pend = 0; 3590 *pend = 0;
2457 w->wd = inotify_add_watch (fs_fd, path, mask); 3591 w->wd = inotify_add_watch (fs_fd, path, mask);
2458 } 3592 }
2459 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3593 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2460 } 3594 }
2461 } 3595 }
2462 else
2463 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2464 3596
2465 if (w->wd >= 0) 3597 if (w->wd >= 0)
2466 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3598 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3599
3600 /* now re-arm timer, if required */
3601 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3602 ev_timer_again (EV_A_ &w->timer);
3603 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2467} 3604}
2468 3605
2469static void noinline 3606static void noinline
2470infy_del (EV_P_ ev_stat *w) 3607infy_del (EV_P_ ev_stat *w)
2471{ 3608{
… …
2474 3611
2475 if (wd < 0) 3612 if (wd < 0)
2476 return; 3613 return;
2477 3614
2478 w->wd = -2; 3615 w->wd = -2;
2479 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3616 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2480 wlist_del (&fs_hash [slot].head, (WL)w); 3617 wlist_del (&fs_hash [slot].head, (WL)w);
2481 3618
2482 /* remove this watcher, if others are watching it, they will rearm */ 3619 /* remove this watcher, if others are watching it, they will rearm */
2483 inotify_rm_watch (fs_fd, wd); 3620 inotify_rm_watch (fs_fd, wd);
2484} 3621}
2485 3622
2486static void noinline 3623static void noinline
2487infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3624infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2488{ 3625{
2489 if (slot < 0) 3626 if (slot < 0)
2490 /* overflow, need to check for all hahs slots */ 3627 /* overflow, need to check for all hash slots */
2491 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3628 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2492 infy_wd (EV_A_ slot, wd, ev); 3629 infy_wd (EV_A_ slot, wd, ev);
2493 else 3630 else
2494 { 3631 {
2495 WL w_; 3632 WL w_;
2496 3633
2497 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3634 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2498 { 3635 {
2499 ev_stat *w = (ev_stat *)w_; 3636 ev_stat *w = (ev_stat *)w_;
2500 w_ = w_->next; /* lets us remove this watcher and all before it */ 3637 w_ = w_->next; /* lets us remove this watcher and all before it */
2501 3638
2502 if (w->wd == wd || wd == -1) 3639 if (w->wd == wd || wd == -1)
2503 { 3640 {
2504 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3641 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2505 { 3642 {
3643 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2506 w->wd = -1; 3644 w->wd = -1;
2507 infy_add (EV_A_ w); /* re-add, no matter what */ 3645 infy_add (EV_A_ w); /* re-add, no matter what */
2508 } 3646 }
2509 3647
2510 stat_timer_cb (EV_A_ &w->timer, 0); 3648 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2515 3653
2516static void 3654static void
2517infy_cb (EV_P_ ev_io *w, int revents) 3655infy_cb (EV_P_ ev_io *w, int revents)
2518{ 3656{
2519 char buf [EV_INOTIFY_BUFSIZE]; 3657 char buf [EV_INOTIFY_BUFSIZE];
2520 struct inotify_event *ev = (struct inotify_event *)buf;
2521 int ofs; 3658 int ofs;
2522 int len = read (fs_fd, buf, sizeof (buf)); 3659 int len = read (fs_fd, buf, sizeof (buf));
2523 3660
2524 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3661 for (ofs = 0; ofs < len; )
3662 {
3663 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2525 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3664 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3665 ofs += sizeof (struct inotify_event) + ev->len;
3666 }
2526} 3667}
2527 3668
2528void inline_size 3669inline_size void ecb_cold
3670ev_check_2625 (EV_P)
3671{
3672 /* kernels < 2.6.25 are borked
3673 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3674 */
3675 if (ev_linux_version () < 0x020619)
3676 return;
3677
3678 fs_2625 = 1;
3679}
3680
3681inline_size int
3682infy_newfd (void)
3683{
3684#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3685 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3686 if (fd >= 0)
3687 return fd;
3688#endif
3689 return inotify_init ();
3690}
3691
3692inline_size void
2529infy_init (EV_P) 3693infy_init (EV_P)
2530{ 3694{
2531 if (fs_fd != -2) 3695 if (fs_fd != -2)
2532 return; 3696 return;
2533 3697
3698 fs_fd = -1;
3699
3700 ev_check_2625 (EV_A);
3701
2534 fs_fd = inotify_init (); 3702 fs_fd = infy_newfd ();
2535 3703
2536 if (fs_fd >= 0) 3704 if (fs_fd >= 0)
2537 { 3705 {
3706 fd_intern (fs_fd);
2538 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3707 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2539 ev_set_priority (&fs_w, EV_MAXPRI); 3708 ev_set_priority (&fs_w, EV_MAXPRI);
2540 ev_io_start (EV_A_ &fs_w); 3709 ev_io_start (EV_A_ &fs_w);
3710 ev_unref (EV_A);
2541 } 3711 }
2542} 3712}
2543 3713
2544void inline_size 3714inline_size void
2545infy_fork (EV_P) 3715infy_fork (EV_P)
2546{ 3716{
2547 int slot; 3717 int slot;
2548 3718
2549 if (fs_fd < 0) 3719 if (fs_fd < 0)
2550 return; 3720 return;
2551 3721
3722 ev_ref (EV_A);
3723 ev_io_stop (EV_A_ &fs_w);
2552 close (fs_fd); 3724 close (fs_fd);
2553 fs_fd = inotify_init (); 3725 fs_fd = infy_newfd ();
2554 3726
3727 if (fs_fd >= 0)
3728 {
3729 fd_intern (fs_fd);
3730 ev_io_set (&fs_w, fs_fd, EV_READ);
3731 ev_io_start (EV_A_ &fs_w);
3732 ev_unref (EV_A);
3733 }
3734
2555 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3735 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2556 { 3736 {
2557 WL w_ = fs_hash [slot].head; 3737 WL w_ = fs_hash [slot].head;
2558 fs_hash [slot].head = 0; 3738 fs_hash [slot].head = 0;
2559 3739
2560 while (w_) 3740 while (w_)
… …
2565 w->wd = -1; 3745 w->wd = -1;
2566 3746
2567 if (fs_fd >= 0) 3747 if (fs_fd >= 0)
2568 infy_add (EV_A_ w); /* re-add, no matter what */ 3748 infy_add (EV_A_ w); /* re-add, no matter what */
2569 else 3749 else
3750 {
3751 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3752 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2570 ev_timer_start (EV_A_ &w->timer); 3753 ev_timer_again (EV_A_ &w->timer);
3754 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3755 }
2571 } 3756 }
2572
2573 } 3757 }
2574} 3758}
2575 3759
2576#endif 3760#endif
2577 3761
… …
2593static void noinline 3777static void noinline
2594stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3778stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2595{ 3779{
2596 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3780 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2597 3781
2598 /* we copy this here each the time so that */ 3782 ev_statdata prev = w->attr;
2599 /* prev has the old value when the callback gets invoked */
2600 w->prev = w->attr;
2601 ev_stat_stat (EV_A_ w); 3783 ev_stat_stat (EV_A_ w);
2602 3784
2603 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3785 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2604 if ( 3786 if (
2605 w->prev.st_dev != w->attr.st_dev 3787 prev.st_dev != w->attr.st_dev
2606 || w->prev.st_ino != w->attr.st_ino 3788 || prev.st_ino != w->attr.st_ino
2607 || w->prev.st_mode != w->attr.st_mode 3789 || prev.st_mode != w->attr.st_mode
2608 || w->prev.st_nlink != w->attr.st_nlink 3790 || prev.st_nlink != w->attr.st_nlink
2609 || w->prev.st_uid != w->attr.st_uid 3791 || prev.st_uid != w->attr.st_uid
2610 || w->prev.st_gid != w->attr.st_gid 3792 || prev.st_gid != w->attr.st_gid
2611 || w->prev.st_rdev != w->attr.st_rdev 3793 || prev.st_rdev != w->attr.st_rdev
2612 || w->prev.st_size != w->attr.st_size 3794 || prev.st_size != w->attr.st_size
2613 || w->prev.st_atime != w->attr.st_atime 3795 || prev.st_atime != w->attr.st_atime
2614 || w->prev.st_mtime != w->attr.st_mtime 3796 || prev.st_mtime != w->attr.st_mtime
2615 || w->prev.st_ctime != w->attr.st_ctime 3797 || prev.st_ctime != w->attr.st_ctime
2616 ) { 3798 ) {
3799 /* we only update w->prev on actual differences */
3800 /* in case we test more often than invoke the callback, */
3801 /* to ensure that prev is always different to attr */
3802 w->prev = prev;
3803
2617 #if EV_USE_INOTIFY 3804 #if EV_USE_INOTIFY
3805 if (fs_fd >= 0)
3806 {
2618 infy_del (EV_A_ w); 3807 infy_del (EV_A_ w);
2619 infy_add (EV_A_ w); 3808 infy_add (EV_A_ w);
2620 ev_stat_stat (EV_A_ w); /* avoid race... */ 3809 ev_stat_stat (EV_A_ w); /* avoid race... */
3810 }
2621 #endif 3811 #endif
2622 3812
2623 ev_feed_event (EV_A_ w, EV_STAT); 3813 ev_feed_event (EV_A_ w, EV_STAT);
2624 } 3814 }
2625} 3815}
… …
2628ev_stat_start (EV_P_ ev_stat *w) 3818ev_stat_start (EV_P_ ev_stat *w)
2629{ 3819{
2630 if (expect_false (ev_is_active (w))) 3820 if (expect_false (ev_is_active (w)))
2631 return; 3821 return;
2632 3822
2633 /* since we use memcmp, we need to clear any padding data etc. */
2634 memset (&w->prev, 0, sizeof (ev_statdata));
2635 memset (&w->attr, 0, sizeof (ev_statdata));
2636
2637 ev_stat_stat (EV_A_ w); 3823 ev_stat_stat (EV_A_ w);
2638 3824
3825 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2639 if (w->interval < MIN_STAT_INTERVAL) 3826 w->interval = MIN_STAT_INTERVAL;
2640 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2641 3827
2642 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3828 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2643 ev_set_priority (&w->timer, ev_priority (w)); 3829 ev_set_priority (&w->timer, ev_priority (w));
2644 3830
2645#if EV_USE_INOTIFY 3831#if EV_USE_INOTIFY
2646 infy_init (EV_A); 3832 infy_init (EV_A);
2647 3833
2648 if (fs_fd >= 0) 3834 if (fs_fd >= 0)
2649 infy_add (EV_A_ w); 3835 infy_add (EV_A_ w);
2650 else 3836 else
2651#endif 3837#endif
3838 {
2652 ev_timer_start (EV_A_ &w->timer); 3839 ev_timer_again (EV_A_ &w->timer);
3840 ev_unref (EV_A);
3841 }
2653 3842
2654 ev_start (EV_A_ (W)w, 1); 3843 ev_start (EV_A_ (W)w, 1);
2655 3844
2656 EV_FREQUENT_CHECK; 3845 EV_FREQUENT_CHECK;
2657} 3846}
… …
2666 EV_FREQUENT_CHECK; 3855 EV_FREQUENT_CHECK;
2667 3856
2668#if EV_USE_INOTIFY 3857#if EV_USE_INOTIFY
2669 infy_del (EV_A_ w); 3858 infy_del (EV_A_ w);
2670#endif 3859#endif
3860
3861 if (ev_is_active (&w->timer))
3862 {
3863 ev_ref (EV_A);
2671 ev_timer_stop (EV_A_ &w->timer); 3864 ev_timer_stop (EV_A_ &w->timer);
3865 }
2672 3866
2673 ev_stop (EV_A_ (W)w); 3867 ev_stop (EV_A_ (W)w);
2674 3868
2675 EV_FREQUENT_CHECK; 3869 EV_FREQUENT_CHECK;
2676} 3870}
… …
2721 3915
2722 EV_FREQUENT_CHECK; 3916 EV_FREQUENT_CHECK;
2723} 3917}
2724#endif 3918#endif
2725 3919
3920#if EV_PREPARE_ENABLE
2726void 3921void
2727ev_prepare_start (EV_P_ ev_prepare *w) 3922ev_prepare_start (EV_P_ ev_prepare *w)
2728{ 3923{
2729 if (expect_false (ev_is_active (w))) 3924 if (expect_false (ev_is_active (w)))
2730 return; 3925 return;
… …
2756 3951
2757 ev_stop (EV_A_ (W)w); 3952 ev_stop (EV_A_ (W)w);
2758 3953
2759 EV_FREQUENT_CHECK; 3954 EV_FREQUENT_CHECK;
2760} 3955}
3956#endif
2761 3957
3958#if EV_CHECK_ENABLE
2762void 3959void
2763ev_check_start (EV_P_ ev_check *w) 3960ev_check_start (EV_P_ ev_check *w)
2764{ 3961{
2765 if (expect_false (ev_is_active (w))) 3962 if (expect_false (ev_is_active (w)))
2766 return; 3963 return;
… …
2792 3989
2793 ev_stop (EV_A_ (W)w); 3990 ev_stop (EV_A_ (W)w);
2794 3991
2795 EV_FREQUENT_CHECK; 3992 EV_FREQUENT_CHECK;
2796} 3993}
3994#endif
2797 3995
2798#if EV_EMBED_ENABLE 3996#if EV_EMBED_ENABLE
2799void noinline 3997void noinline
2800ev_embed_sweep (EV_P_ ev_embed *w) 3998ev_embed_sweep (EV_P_ ev_embed *w)
2801{ 3999{
2802 ev_loop (w->other, EVLOOP_NONBLOCK); 4000 ev_run (w->other, EVRUN_NOWAIT);
2803} 4001}
2804 4002
2805static void 4003static void
2806embed_io_cb (EV_P_ ev_io *io, int revents) 4004embed_io_cb (EV_P_ ev_io *io, int revents)
2807{ 4005{
2808 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4006 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2809 4007
2810 if (ev_cb (w)) 4008 if (ev_cb (w))
2811 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4009 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2812 else 4010 else
2813 ev_loop (w->other, EVLOOP_NONBLOCK); 4011 ev_run (w->other, EVRUN_NOWAIT);
2814} 4012}
2815 4013
2816static void 4014static void
2817embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4015embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2818{ 4016{
2819 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 4017 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2820 4018
2821 { 4019 {
2822 struct ev_loop *loop = w->other; 4020 EV_P = w->other;
2823 4021
2824 while (fdchangecnt) 4022 while (fdchangecnt)
2825 { 4023 {
2826 fd_reify (EV_A); 4024 fd_reify (EV_A);
2827 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4025 ev_run (EV_A_ EVRUN_NOWAIT);
2828 } 4026 }
2829 } 4027 }
4028}
4029
4030static void
4031embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
4032{
4033 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
4034
4035 ev_embed_stop (EV_A_ w);
4036
4037 {
4038 EV_P = w->other;
4039
4040 ev_loop_fork (EV_A);
4041 ev_run (EV_A_ EVRUN_NOWAIT);
4042 }
4043
4044 ev_embed_start (EV_A_ w);
2830} 4045}
2831 4046
2832#if 0 4047#if 0
2833static void 4048static void
2834embed_idle_cb (EV_P_ ev_idle *idle, int revents) 4049embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2842{ 4057{
2843 if (expect_false (ev_is_active (w))) 4058 if (expect_false (ev_is_active (w)))
2844 return; 4059 return;
2845 4060
2846 { 4061 {
2847 struct ev_loop *loop = w->other; 4062 EV_P = w->other;
2848 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4063 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2849 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4064 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2850 } 4065 }
2851 4066
2852 EV_FREQUENT_CHECK; 4067 EV_FREQUENT_CHECK;
2853 4068
… …
2856 4071
2857 ev_prepare_init (&w->prepare, embed_prepare_cb); 4072 ev_prepare_init (&w->prepare, embed_prepare_cb);
2858 ev_set_priority (&w->prepare, EV_MINPRI); 4073 ev_set_priority (&w->prepare, EV_MINPRI);
2859 ev_prepare_start (EV_A_ &w->prepare); 4074 ev_prepare_start (EV_A_ &w->prepare);
2860 4075
4076 ev_fork_init (&w->fork, embed_fork_cb);
4077 ev_fork_start (EV_A_ &w->fork);
4078
2861 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 4079 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2862 4080
2863 ev_start (EV_A_ (W)w, 1); 4081 ev_start (EV_A_ (W)w, 1);
2864 4082
2865 EV_FREQUENT_CHECK; 4083 EV_FREQUENT_CHECK;
… …
2872 if (expect_false (!ev_is_active (w))) 4090 if (expect_false (!ev_is_active (w)))
2873 return; 4091 return;
2874 4092
2875 EV_FREQUENT_CHECK; 4093 EV_FREQUENT_CHECK;
2876 4094
2877 ev_io_stop (EV_A_ &w->io); 4095 ev_io_stop (EV_A_ &w->io);
2878 ev_prepare_stop (EV_A_ &w->prepare); 4096 ev_prepare_stop (EV_A_ &w->prepare);
4097 ev_fork_stop (EV_A_ &w->fork);
2879 4098
2880 ev_stop (EV_A_ (W)w); 4099 ev_stop (EV_A_ (W)w);
2881 4100
2882 EV_FREQUENT_CHECK; 4101 EV_FREQUENT_CHECK;
2883} 4102}
… …
2919 4138
2920 EV_FREQUENT_CHECK; 4139 EV_FREQUENT_CHECK;
2921} 4140}
2922#endif 4141#endif
2923 4142
4143#if EV_CLEANUP_ENABLE
4144void
4145ev_cleanup_start (EV_P_ ev_cleanup *w)
4146{
4147 if (expect_false (ev_is_active (w)))
4148 return;
4149
4150 EV_FREQUENT_CHECK;
4151
4152 ev_start (EV_A_ (W)w, ++cleanupcnt);
4153 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4154 cleanups [cleanupcnt - 1] = w;
4155
4156 /* cleanup watchers should never keep a refcount on the loop */
4157 ev_unref (EV_A);
4158 EV_FREQUENT_CHECK;
4159}
4160
4161void
4162ev_cleanup_stop (EV_P_ ev_cleanup *w)
4163{
4164 clear_pending (EV_A_ (W)w);
4165 if (expect_false (!ev_is_active (w)))
4166 return;
4167
4168 EV_FREQUENT_CHECK;
4169 ev_ref (EV_A);
4170
4171 {
4172 int active = ev_active (w);
4173
4174 cleanups [active - 1] = cleanups [--cleanupcnt];
4175 ev_active (cleanups [active - 1]) = active;
4176 }
4177
4178 ev_stop (EV_A_ (W)w);
4179
4180 EV_FREQUENT_CHECK;
4181}
4182#endif
4183
2924#if EV_ASYNC_ENABLE 4184#if EV_ASYNC_ENABLE
2925void 4185void
2926ev_async_start (EV_P_ ev_async *w) 4186ev_async_start (EV_P_ ev_async *w)
2927{ 4187{
2928 if (expect_false (ev_is_active (w))) 4188 if (expect_false (ev_is_active (w)))
2929 return; 4189 return;
2930 4190
4191 w->sent = 0;
4192
2931 evpipe_init (EV_A); 4193 evpipe_init (EV_A);
2932 4194
2933 EV_FREQUENT_CHECK; 4195 EV_FREQUENT_CHECK;
2934 4196
2935 ev_start (EV_A_ (W)w, ++asynccnt); 4197 ev_start (EV_A_ (W)w, ++asynccnt);
… …
2962 4224
2963void 4225void
2964ev_async_send (EV_P_ ev_async *w) 4226ev_async_send (EV_P_ ev_async *w)
2965{ 4227{
2966 w->sent = 1; 4228 w->sent = 1;
2967 evpipe_write (EV_A_ &gotasync); 4229 evpipe_write (EV_A_ &async_pending);
2968} 4230}
2969#endif 4231#endif
2970 4232
2971/*****************************************************************************/ 4233/*****************************************************************************/
2972 4234
… …
2992} 4254}
2993 4255
2994static void 4256static void
2995once_cb_io (EV_P_ ev_io *w, int revents) 4257once_cb_io (EV_P_ ev_io *w, int revents)
2996{ 4258{
2997 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 4259 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
4260
4261 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2998} 4262}
2999 4263
3000static void 4264static void
3001once_cb_to (EV_P_ ev_timer *w, int revents) 4265once_cb_to (EV_P_ ev_timer *w, int revents)
3002{ 4266{
3003 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 4267 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
4268
4269 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3004} 4270}
3005 4271
3006void 4272void
3007ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4273ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
3008{ 4274{
3009 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4275 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3010 4276
3011 if (expect_false (!once)) 4277 if (expect_false (!once))
3012 { 4278 {
3013 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4279 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3014 return; 4280 return;
3015 } 4281 }
3016 4282
3017 once->cb = cb; 4283 once->cb = cb;
3018 once->arg = arg; 4284 once->arg = arg;
… …
3030 ev_timer_set (&once->to, timeout, 0.); 4296 ev_timer_set (&once->to, timeout, 0.);
3031 ev_timer_start (EV_A_ &once->to); 4297 ev_timer_start (EV_A_ &once->to);
3032 } 4298 }
3033} 4299}
3034 4300
4301/*****************************************************************************/
4302
4303#if EV_WALK_ENABLE
4304void ecb_cold
4305ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
4306{
4307 int i, j;
4308 ev_watcher_list *wl, *wn;
4309
4310 if (types & (EV_IO | EV_EMBED))
4311 for (i = 0; i < anfdmax; ++i)
4312 for (wl = anfds [i].head; wl; )
4313 {
4314 wn = wl->next;
4315
4316#if EV_EMBED_ENABLE
4317 if (ev_cb ((ev_io *)wl) == embed_io_cb)
4318 {
4319 if (types & EV_EMBED)
4320 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
4321 }
4322 else
4323#endif
4324#if EV_USE_INOTIFY
4325 if (ev_cb ((ev_io *)wl) == infy_cb)
4326 ;
4327 else
4328#endif
4329 if ((ev_io *)wl != &pipe_w)
4330 if (types & EV_IO)
4331 cb (EV_A_ EV_IO, wl);
4332
4333 wl = wn;
4334 }
4335
4336 if (types & (EV_TIMER | EV_STAT))
4337 for (i = timercnt + HEAP0; i-- > HEAP0; )
4338#if EV_STAT_ENABLE
4339 /*TODO: timer is not always active*/
4340 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
4341 {
4342 if (types & EV_STAT)
4343 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
4344 }
4345 else
4346#endif
4347 if (types & EV_TIMER)
4348 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
4349
4350#if EV_PERIODIC_ENABLE
4351 if (types & EV_PERIODIC)
4352 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4353 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4354#endif
4355
4356#if EV_IDLE_ENABLE
4357 if (types & EV_IDLE)
4358 for (j = NUMPRI; j--; )
4359 for (i = idlecnt [j]; i--; )
4360 cb (EV_A_ EV_IDLE, idles [j][i]);
4361#endif
4362
4363#if EV_FORK_ENABLE
4364 if (types & EV_FORK)
4365 for (i = forkcnt; i--; )
4366 if (ev_cb (forks [i]) != embed_fork_cb)
4367 cb (EV_A_ EV_FORK, forks [i]);
4368#endif
4369
4370#if EV_ASYNC_ENABLE
4371 if (types & EV_ASYNC)
4372 for (i = asynccnt; i--; )
4373 cb (EV_A_ EV_ASYNC, asyncs [i]);
4374#endif
4375
4376#if EV_PREPARE_ENABLE
4377 if (types & EV_PREPARE)
4378 for (i = preparecnt; i--; )
4379# if EV_EMBED_ENABLE
4380 if (ev_cb (prepares [i]) != embed_prepare_cb)
4381# endif
4382 cb (EV_A_ EV_PREPARE, prepares [i]);
4383#endif
4384
4385#if EV_CHECK_ENABLE
4386 if (types & EV_CHECK)
4387 for (i = checkcnt; i--; )
4388 cb (EV_A_ EV_CHECK, checks [i]);
4389#endif
4390
4391#if EV_SIGNAL_ENABLE
4392 if (types & EV_SIGNAL)
4393 for (i = 0; i < EV_NSIG - 1; ++i)
4394 for (wl = signals [i].head; wl; )
4395 {
4396 wn = wl->next;
4397 cb (EV_A_ EV_SIGNAL, wl);
4398 wl = wn;
4399 }
4400#endif
4401
4402#if EV_CHILD_ENABLE
4403 if (types & EV_CHILD)
4404 for (i = (EV_PID_HASHSIZE); i--; )
4405 for (wl = childs [i]; wl; )
4406 {
4407 wn = wl->next;
4408 cb (EV_A_ EV_CHILD, wl);
4409 wl = wn;
4410 }
4411#endif
4412/* EV_STAT 0x00001000 /* stat data changed */
4413/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4414}
4415#endif
4416
3035#if EV_MULTIPLICITY 4417#if EV_MULTIPLICITY
3036 #include "ev_wrap.h" 4418 #include "ev_wrap.h"
3037#endif 4419#endif
3038 4420
3039#ifdef __cplusplus 4421EV_CPP(})
3040}
3041#endif
3042 4422

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