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Comparing libev/ev.c (file contents):
Revision 1.261 by root, Mon Sep 29 03:31:14 2008 UTC vs.
Revision 1.392 by root, Thu Aug 4 14:37:49 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 #define ECB_MEMORY_FENCE_ACQUIRE do { } while (0)
544 #define ECB_MEMORY_FENCE_RELEASE do { } while (0)
545#endif
546
547#ifndef ECB_MEMORY_FENCE
548 #if ECB_GCC_VERSION(2,5)
549 #if __x86
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
552 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
553 #elif __amd64
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
555 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
556 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
557 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
558 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
559 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \
560 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) \
561 || defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \
562 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ )
563 #define ECB_MEMORY_FENCE \
564 do { \
565 int null = 0; \
566 __asm__ __volatile__ ("mcr p15,0,%0,c6,c10,5", : "=&r" (null) : : "memory"); \
567 while (0)
568 #endif
569 #endif
570#endif
571
572#ifndef ECB_MEMORY_FENCE
573 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER)
574 #define ECB_MEMORY_FENCE __sync_synchronize ()
575 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
576 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
577 #elif _MSC_VER >= 1400 /* VC++ 2005 */
578 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
579 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
580 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
581 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
582 #elif defined(_WIN32)
583 #include <WinNT.h>
584 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
585 #endif
586#endif
587
588#ifndef ECB_MEMORY_FENCE
589 #if !ECB_AVOID_PTHREADS
590 /*
591 * if you get undefined symbol references to pthread_mutex_lock,
592 * or failure to find pthread.h, then you should implement
593 * the ECB_MEMORY_FENCE operations for your cpu/compiler
594 * OR provide pthread.h and link against the posix thread library
595 * of your system.
596 */
597 #include <pthread.h>
598 #define ECB_NEEDS_PTHREADS 1
599 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
600
601 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
602 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
603 #endif
604#endif
605
606#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
607 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
608#endif
609
610#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
611 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
612#endif
613
614/*****************************************************************************/
615
616#define ECB_C99 (__STDC_VERSION__ >= 199901L)
617
618#if __cplusplus
619 #define ecb_inline static inline
620#elif ECB_GCC_VERSION(2,5)
621 #define ecb_inline static __inline__
622#elif ECB_C99
623 #define ecb_inline static inline
624#else
625 #define ecb_inline static
626#endif
627
628#if ECB_GCC_VERSION(3,3)
629 #define ecb_restrict __restrict__
630#elif ECB_C99
631 #define ecb_restrict restrict
632#else
633 #define ecb_restrict
634#endif
635
636typedef int ecb_bool;
637
638#define ECB_CONCAT_(a, b) a ## b
639#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
640#define ECB_STRINGIFY_(a) # a
641#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
642
643#define ecb_function_ ecb_inline
644
645#if ECB_GCC_VERSION(3,1)
646 #define ecb_attribute(attrlist) __attribute__(attrlist)
647 #define ecb_is_constant(expr) __builtin_constant_p (expr)
648 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
649 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
650#else
651 #define ecb_attribute(attrlist)
652 #define ecb_is_constant(expr) 0
653 #define ecb_expect(expr,value) (expr)
654 #define ecb_prefetch(addr,rw,locality)
655#endif
656
657/* no emulation for ecb_decltype */
658#if ECB_GCC_VERSION(4,5)
659 #define ecb_decltype(x) __decltype(x)
660#elif ECB_GCC_VERSION(3,0)
661 #define ecb_decltype(x) __typeof(x)
662#endif
663
664#define ecb_noinline ecb_attribute ((__noinline__))
665#define ecb_noreturn ecb_attribute ((__noreturn__))
666#define ecb_unused ecb_attribute ((__unused__))
667#define ecb_const ecb_attribute ((__const__))
668#define ecb_pure ecb_attribute ((__pure__))
669
670#if ECB_GCC_VERSION(4,3)
671 #define ecb_artificial ecb_attribute ((__artificial__))
672 #define ecb_hot ecb_attribute ((__hot__))
673 #define ecb_cold ecb_attribute ((__cold__))
674#else
675 #define ecb_artificial
676 #define ecb_hot
677 #define ecb_cold
678#endif
679
680/* put around conditional expressions if you are very sure that the */
681/* expression is mostly true or mostly false. note that these return */
682/* booleans, not the expression. */
343#define expect_false(expr) expect ((expr) != 0, 0) 683#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
344#define expect_true(expr) expect ((expr) != 0, 1) 684#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
685/* for compatibility to the rest of the world */
686#define ecb_likely(expr) ecb_expect_true (expr)
687#define ecb_unlikely(expr) ecb_expect_false (expr)
688
689/* count trailing zero bits and count # of one bits */
690#if ECB_GCC_VERSION(3,4)
691 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
692 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
693 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
694 #define ecb_ctz32(x) __builtin_ctz (x)
695 #define ecb_ctz64(x) __builtin_ctzll (x)
696 #define ecb_popcount32(x) __builtin_popcount (x)
697 /* no popcountll */
698#else
699 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
700 ecb_function_ int
701 ecb_ctz32 (uint32_t x)
702 {
703 int r = 0;
704
705 x &= ~x + 1; /* this isolates the lowest bit */
706
707#if ECB_branchless_on_i386
708 r += !!(x & 0xaaaaaaaa) << 0;
709 r += !!(x & 0xcccccccc) << 1;
710 r += !!(x & 0xf0f0f0f0) << 2;
711 r += !!(x & 0xff00ff00) << 3;
712 r += !!(x & 0xffff0000) << 4;
713#else
714 if (x & 0xaaaaaaaa) r += 1;
715 if (x & 0xcccccccc) r += 2;
716 if (x & 0xf0f0f0f0) r += 4;
717 if (x & 0xff00ff00) r += 8;
718 if (x & 0xffff0000) r += 16;
719#endif
720
721 return r;
722 }
723
724 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
725 ecb_function_ int
726 ecb_ctz64 (uint64_t x)
727 {
728 int shift = x & 0xffffffffU ? 0 : 32;
729 return ecb_ctz32 (x >> shift) + shift;
730 }
731
732 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
733 ecb_function_ int
734 ecb_popcount32 (uint32_t x)
735 {
736 x -= (x >> 1) & 0x55555555;
737 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
738 x = ((x >> 4) + x) & 0x0f0f0f0f;
739 x *= 0x01010101;
740
741 return x >> 24;
742 }
743
744 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
745 ecb_function_ int ecb_ld32 (uint32_t x)
746 {
747 int r = 0;
748
749 if (x >> 16) { x >>= 16; r += 16; }
750 if (x >> 8) { x >>= 8; r += 8; }
751 if (x >> 4) { x >>= 4; r += 4; }
752 if (x >> 2) { x >>= 2; r += 2; }
753 if (x >> 1) { r += 1; }
754
755 return r;
756 }
757
758 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
759 ecb_function_ int ecb_ld64 (uint64_t x)
760 {
761 int r = 0;
762
763 if (x >> 32) { x >>= 32; r += 32; }
764
765 return r + ecb_ld32 (x);
766 }
767#endif
768
769/* popcount64 is only available on 64 bit cpus as gcc builtin */
770/* so for this version we are lazy */
771ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
772ecb_function_ int
773ecb_popcount64 (uint64_t x)
774{
775 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
776}
777
778ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
779ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
780ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
781ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
782ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
783ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
784ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
785ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
786
787ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
788ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
789ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
790ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
791ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
792ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
793ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
794ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
795
796#if ECB_GCC_VERSION(4,3)
797 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
798 #define ecb_bswap32(x) __builtin_bswap32 (x)
799 #define ecb_bswap64(x) __builtin_bswap64 (x)
800#else
801 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
802 ecb_function_ uint16_t
803 ecb_bswap16 (uint16_t x)
804 {
805 return ecb_rotl16 (x, 8);
806 }
807
808 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
809 ecb_function_ uint32_t
810 ecb_bswap32 (uint32_t x)
811 {
812 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
813 }
814
815 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
816 ecb_function_ uint64_t
817 ecb_bswap64 (uint64_t x)
818 {
819 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
820 }
821#endif
822
823#if ECB_GCC_VERSION(4,5)
824 #define ecb_unreachable() __builtin_unreachable ()
825#else
826 /* this seems to work fine, but gcc always emits a warning for it :/ */
827 ecb_function_ void ecb_unreachable (void) ecb_noreturn;
828 ecb_function_ void ecb_unreachable (void) { }
829#endif
830
831/* try to tell the compiler that some condition is definitely true */
832#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
833
834ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
835ecb_function_ unsigned char
836ecb_byteorder_helper (void)
837{
838 const uint32_t u = 0x11223344;
839 return *(unsigned char *)&u;
840}
841
842ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
843ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
844ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
845ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
846
847#if ECB_GCC_VERSION(3,0) || ECB_C99
848 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
849#else
850 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
851#endif
852
853#if ecb_cplusplus_does_not_suck
854 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
855 template<typename T, int N>
856 static inline int ecb_array_length (const T (&arr)[N])
857 {
858 return N;
859 }
860#else
861 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
862#endif
863
864#endif
865
866/* ECB.H END */
867
868#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
869# undef ECB_MEMORY_FENCE
870# undef ECB_MEMORY_FENCE_ACQUIRE
871# undef ECB_MEMORY_FENCE_RELEASE
872#endif
873
874#define expect_false(cond) ecb_expect_false (cond)
875#define expect_true(cond) ecb_expect_true (cond)
876#define noinline ecb_noinline
877
345#define inline_size static inline 878#define inline_size ecb_inline
346 879
347#if EV_MINIMAL 880#if EV_FEATURE_CODE
881# define inline_speed ecb_inline
882#else
348# define inline_speed static noinline 883# define inline_speed static noinline
884#endif
885
886#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
887
888#if EV_MINPRI == EV_MAXPRI
889# define ABSPRI(w) (((W)w), 0)
349#else 890#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) 891# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
892#endif
355 893
356#define EMPTY /* required for microsofts broken pseudo-c compiler */ 894#define EMPTY /* required for microsofts broken pseudo-c compiler */
357#define EMPTY2(a,b) /* used to suppress some warnings */ 895#define EMPTY2(a,b) /* used to suppress some warnings */
358 896
359typedef ev_watcher *W; 897typedef ev_watcher *W;
… …
361typedef ev_watcher_time *WT; 899typedef ev_watcher_time *WT;
362 900
363#define ev_active(w) ((W)(w))->active 901#define ev_active(w) ((W)(w))->active
364#define ev_at(w) ((WT)(w))->at 902#define ev_at(w) ((WT)(w))->at
365 903
904#if EV_USE_REALTIME
905/* sig_atomic_t is used to avoid per-thread variables or locking but still */
906/* giving it a reasonably high chance of working on typical architectures */
907static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
908#endif
909
366#if EV_USE_MONOTONIC 910#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? */ 911static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
912#endif
913
914#ifndef EV_FD_TO_WIN32_HANDLE
915# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
916#endif
917#ifndef EV_WIN32_HANDLE_TO_FD
918# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
919#endif
920#ifndef EV_WIN32_CLOSE_FD
921# define EV_WIN32_CLOSE_FD(fd) close (fd)
370#endif 922#endif
371 923
372#ifdef _WIN32 924#ifdef _WIN32
373# include "ev_win32.c" 925# include "ev_win32.c"
374#endif 926#endif
375 927
376/*****************************************************************************/ 928/*****************************************************************************/
377 929
930/* define a suitable floor function (only used by periodics atm) */
931
932#if EV_USE_FLOOR
933# include <math.h>
934# define ev_floor(v) floor (v)
935#else
936
937#include <float.h>
938
939/* a floor() replacement function, should be independent of ev_tstamp type */
940static ev_tstamp noinline
941ev_floor (ev_tstamp v)
942{
943 /* the choice of shift factor is not terribly important */
944#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
945 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
946#else
947 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
948#endif
949
950 /* argument too large for an unsigned long? */
951 if (expect_false (v >= shift))
952 {
953 ev_tstamp f;
954
955 if (v == v - 1.)
956 return v; /* very large number */
957
958 f = shift * ev_floor (v * (1. / shift));
959 return f + ev_floor (v - f);
960 }
961
962 /* special treatment for negative args? */
963 if (expect_false (v < 0.))
964 {
965 ev_tstamp f = -ev_floor (-v);
966
967 return f - (f == v ? 0 : 1);
968 }
969
970 /* fits into an unsigned long */
971 return (unsigned long)v;
972}
973
974#endif
975
976/*****************************************************************************/
977
978#ifdef __linux
979# include <sys/utsname.h>
980#endif
981
982static unsigned int noinline ecb_cold
983ev_linux_version (void)
984{
985#ifdef __linux
986 unsigned int v = 0;
987 struct utsname buf;
988 int i;
989 char *p = buf.release;
990
991 if (uname (&buf))
992 return 0;
993
994 for (i = 3+1; --i; )
995 {
996 unsigned int c = 0;
997
998 for (;;)
999 {
1000 if (*p >= '0' && *p <= '9')
1001 c = c * 10 + *p++ - '0';
1002 else
1003 {
1004 p += *p == '.';
1005 break;
1006 }
1007 }
1008
1009 v = (v << 8) | c;
1010 }
1011
1012 return v;
1013#else
1014 return 0;
1015#endif
1016}
1017
1018/*****************************************************************************/
1019
1020#if EV_AVOID_STDIO
1021static void noinline ecb_cold
1022ev_printerr (const char *msg)
1023{
1024 write (STDERR_FILENO, msg, strlen (msg));
1025}
1026#endif
1027
378static void (*syserr_cb)(const char *msg); 1028static void (*syserr_cb)(const char *msg);
379 1029
380void 1030void ecb_cold
381ev_set_syserr_cb (void (*cb)(const char *msg)) 1031ev_set_syserr_cb (void (*cb)(const char *msg))
382{ 1032{
383 syserr_cb = cb; 1033 syserr_cb = cb;
384} 1034}
385 1035
386static void noinline 1036static void noinline ecb_cold
387syserr (const char *msg) 1037ev_syserr (const char *msg)
388{ 1038{
389 if (!msg) 1039 if (!msg)
390 msg = "(libev) system error"; 1040 msg = "(libev) system error";
391 1041
392 if (syserr_cb) 1042 if (syserr_cb)
393 syserr_cb (msg); 1043 syserr_cb (msg);
394 else 1044 else
395 { 1045 {
1046#if EV_AVOID_STDIO
1047 ev_printerr (msg);
1048 ev_printerr (": ");
1049 ev_printerr (strerror (errno));
1050 ev_printerr ("\n");
1051#else
396 perror (msg); 1052 perror (msg);
1053#endif
397 abort (); 1054 abort ();
398 } 1055 }
399} 1056}
400 1057
401static void * 1058static void *
402ev_realloc_emul (void *ptr, long size) 1059ev_realloc_emul (void *ptr, long size)
403{ 1060{
1061#if __GLIBC__
1062 return realloc (ptr, size);
1063#else
404 /* some systems, notably openbsd and darwin, fail to properly 1064 /* some systems, notably openbsd and darwin, fail to properly
405 * implement realloc (x, 0) (as required by both ansi c-98 and 1065 * implement realloc (x, 0) (as required by both ansi c-89 and
406 * the single unix specification, so work around them here. 1066 * the single unix specification, so work around them here.
407 */ 1067 */
408 1068
409 if (size) 1069 if (size)
410 return realloc (ptr, size); 1070 return realloc (ptr, size);
411 1071
412 free (ptr); 1072 free (ptr);
413 return 0; 1073 return 0;
1074#endif
414} 1075}
415 1076
416static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1077static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
417 1078
418void 1079void ecb_cold
419ev_set_allocator (void *(*cb)(void *ptr, long size)) 1080ev_set_allocator (void *(*cb)(void *ptr, long size))
420{ 1081{
421 alloc = cb; 1082 alloc = cb;
422} 1083}
423 1084
… …
426{ 1087{
427 ptr = alloc (ptr, size); 1088 ptr = alloc (ptr, size);
428 1089
429 if (!ptr && size) 1090 if (!ptr && size)
430 { 1091 {
1092#if EV_AVOID_STDIO
1093 ev_printerr ("(libev) memory allocation failed, aborting.\n");
1094#else
431 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1095 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
1096#endif
432 abort (); 1097 abort ();
433 } 1098 }
434 1099
435 return ptr; 1100 return ptr;
436} 1101}
… …
438#define ev_malloc(size) ev_realloc (0, (size)) 1103#define ev_malloc(size) ev_realloc (0, (size))
439#define ev_free(ptr) ev_realloc ((ptr), 0) 1104#define ev_free(ptr) ev_realloc ((ptr), 0)
440 1105
441/*****************************************************************************/ 1106/*****************************************************************************/
442 1107
1108/* set in reify when reification needed */
1109#define EV_ANFD_REIFY 1
1110
1111/* file descriptor info structure */
443typedef struct 1112typedef struct
444{ 1113{
445 WL head; 1114 WL head;
446 unsigned char events; 1115 unsigned char events; /* the events watched for */
1116 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
1117 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
447 unsigned char reify; 1118 unsigned char unused;
1119#if EV_USE_EPOLL
1120 unsigned int egen; /* generation counter to counter epoll bugs */
1121#endif
448#if EV_SELECT_IS_WINSOCKET 1122#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
449 SOCKET handle; 1123 SOCKET handle;
450#endif 1124#endif
1125#if EV_USE_IOCP
1126 OVERLAPPED or, ow;
1127#endif
451} ANFD; 1128} ANFD;
452 1129
1130/* stores the pending event set for a given watcher */
453typedef struct 1131typedef struct
454{ 1132{
455 W w; 1133 W w;
456 int events; 1134 int events; /* the pending event set for the given watcher */
457} ANPENDING; 1135} ANPENDING;
458 1136
459#if EV_USE_INOTIFY 1137#if EV_USE_INOTIFY
460/* hash table entry per inotify-id */ 1138/* hash table entry per inotify-id */
461typedef struct 1139typedef struct
… …
464} ANFS; 1142} ANFS;
465#endif 1143#endif
466 1144
467/* Heap Entry */ 1145/* Heap Entry */
468#if EV_HEAP_CACHE_AT 1146#if EV_HEAP_CACHE_AT
1147 /* a heap element */
469 typedef struct { 1148 typedef struct {
470 ev_tstamp at; 1149 ev_tstamp at;
471 WT w; 1150 WT w;
472 } ANHE; 1151 } ANHE;
473 1152
474 #define ANHE_w(he) (he).w /* access watcher, read-write */ 1153 #define ANHE_w(he) (he).w /* access watcher, read-write */
475 #define ANHE_at(he) (he).at /* access cached at, read-only */ 1154 #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 */ 1155 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
477#else 1156#else
1157 /* a heap element */
478 typedef WT ANHE; 1158 typedef WT ANHE;
479 1159
480 #define ANHE_w(he) (he) 1160 #define ANHE_w(he) (he)
481 #define ANHE_at(he) (he)->at 1161 #define ANHE_at(he) (he)->at
482 #define ANHE_at_cache(he) 1162 #define ANHE_at_cache(he)
… …
506 1186
507 static int ev_default_loop_ptr; 1187 static int ev_default_loop_ptr;
508 1188
509#endif 1189#endif
510 1190
1191#if EV_FEATURE_API
1192# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
1193# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
1194# define EV_INVOKE_PENDING invoke_cb (EV_A)
1195#else
1196# define EV_RELEASE_CB (void)0
1197# define EV_ACQUIRE_CB (void)0
1198# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
1199#endif
1200
1201#define EVBREAK_RECURSE 0x80
1202
511/*****************************************************************************/ 1203/*****************************************************************************/
512 1204
1205#ifndef EV_HAVE_EV_TIME
513ev_tstamp 1206ev_tstamp
514ev_time (void) 1207ev_time (void)
515{ 1208{
516#if EV_USE_REALTIME 1209#if EV_USE_REALTIME
1210 if (expect_true (have_realtime))
1211 {
517 struct timespec ts; 1212 struct timespec ts;
518 clock_gettime (CLOCK_REALTIME, &ts); 1213 clock_gettime (CLOCK_REALTIME, &ts);
519 return ts.tv_sec + ts.tv_nsec * 1e-9; 1214 return ts.tv_sec + ts.tv_nsec * 1e-9;
520#else 1215 }
1216#endif
1217
521 struct timeval tv; 1218 struct timeval tv;
522 gettimeofday (&tv, 0); 1219 gettimeofday (&tv, 0);
523 return tv.tv_sec + tv.tv_usec * 1e-6; 1220 return tv.tv_sec + tv.tv_usec * 1e-6;
524#endif
525} 1221}
1222#endif
526 1223
527ev_tstamp inline_size 1224inline_size ev_tstamp
528get_clock (void) 1225get_clock (void)
529{ 1226{
530#if EV_USE_MONOTONIC 1227#if EV_USE_MONOTONIC
531 if (expect_true (have_monotonic)) 1228 if (expect_true (have_monotonic))
532 { 1229 {
… …
553 if (delay > 0.) 1250 if (delay > 0.)
554 { 1251 {
555#if EV_USE_NANOSLEEP 1252#if EV_USE_NANOSLEEP
556 struct timespec ts; 1253 struct timespec ts;
557 1254
558 ts.tv_sec = (time_t)delay; 1255 EV_TS_SET (ts, delay);
559 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
560
561 nanosleep (&ts, 0); 1256 nanosleep (&ts, 0);
562#elif defined(_WIN32) 1257#elif defined(_WIN32)
563 Sleep ((unsigned long)(delay * 1e3)); 1258 Sleep ((unsigned long)(delay * 1e3));
564#else 1259#else
565 struct timeval tv; 1260 struct timeval tv;
566 1261
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 */ 1262 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
571 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 1263 /* something not guaranteed by newer posix versions, but guaranteed */
572 /* by older ones */ 1264 /* by older ones */
1265 EV_TV_SET (tv, delay);
573 select (0, 0, 0, 0, &tv); 1266 select (0, 0, 0, 0, &tv);
574#endif 1267#endif
575 } 1268 }
576} 1269}
577 1270
578/*****************************************************************************/ 1271/*****************************************************************************/
579 1272
580#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1273#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
581 1274
582int inline_size 1275/* find a suitable new size for the given array, */
1276/* hopefully by rounding to a nice-to-malloc size */
1277inline_size int
583array_nextsize (int elem, int cur, int cnt) 1278array_nextsize (int elem, int cur, int cnt)
584{ 1279{
585 int ncur = cur + 1; 1280 int ncur = cur + 1;
586 1281
587 do 1282 do
… …
598 } 1293 }
599 1294
600 return ncur; 1295 return ncur;
601} 1296}
602 1297
603static noinline void * 1298static void * noinline ecb_cold
604array_realloc (int elem, void *base, int *cur, int cnt) 1299array_realloc (int elem, void *base, int *cur, int cnt)
605{ 1300{
606 *cur = array_nextsize (elem, *cur, cnt); 1301 *cur = array_nextsize (elem, *cur, cnt);
607 return ev_realloc (base, elem * *cur); 1302 return ev_realloc (base, elem * *cur);
608} 1303}
1304
1305#define array_init_zero(base,count) \
1306 memset ((void *)(base), 0, sizeof (*(base)) * (count))
609 1307
610#define array_needsize(type,base,cur,cnt,init) \ 1308#define array_needsize(type,base,cur,cnt,init) \
611 if (expect_false ((cnt) > (cur))) \ 1309 if (expect_false ((cnt) > (cur))) \
612 { \ 1310 { \
613 int ocur_ = (cur); \ 1311 int ecb_unused ocur_ = (cur); \
614 (base) = (type *)array_realloc \ 1312 (base) = (type *)array_realloc \
615 (sizeof (type), (base), &(cur), (cnt)); \ 1313 (sizeof (type), (base), &(cur), (cnt)); \
616 init ((base) + (ocur_), (cur) - ocur_); \ 1314 init ((base) + (ocur_), (cur) - ocur_); \
617 } 1315 }
618 1316
… …
625 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1323 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
626 } 1324 }
627#endif 1325#endif
628 1326
629#define array_free(stem, idx) \ 1327#define array_free(stem, idx) \
630 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1328 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
631 1329
632/*****************************************************************************/ 1330/*****************************************************************************/
1331
1332/* dummy callback for pending events */
1333static void noinline
1334pendingcb (EV_P_ ev_prepare *w, int revents)
1335{
1336}
633 1337
634void noinline 1338void noinline
635ev_feed_event (EV_P_ void *w, int revents) 1339ev_feed_event (EV_P_ void *w, int revents)
636{ 1340{
637 W w_ = (W)w; 1341 W w_ = (W)w;
… …
646 pendings [pri][w_->pending - 1].w = w_; 1350 pendings [pri][w_->pending - 1].w = w_;
647 pendings [pri][w_->pending - 1].events = revents; 1351 pendings [pri][w_->pending - 1].events = revents;
648 } 1352 }
649} 1353}
650 1354
651void inline_speed 1355inline_speed void
1356feed_reverse (EV_P_ W w)
1357{
1358 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1359 rfeeds [rfeedcnt++] = w;
1360}
1361
1362inline_size void
1363feed_reverse_done (EV_P_ int revents)
1364{
1365 do
1366 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1367 while (rfeedcnt);
1368}
1369
1370inline_speed void
652queue_events (EV_P_ W *events, int eventcnt, int type) 1371queue_events (EV_P_ W *events, int eventcnt, int type)
653{ 1372{
654 int i; 1373 int i;
655 1374
656 for (i = 0; i < eventcnt; ++i) 1375 for (i = 0; i < eventcnt; ++i)
657 ev_feed_event (EV_A_ events [i], type); 1376 ev_feed_event (EV_A_ events [i], type);
658} 1377}
659 1378
660/*****************************************************************************/ 1379/*****************************************************************************/
661 1380
662void inline_size 1381inline_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) 1382fd_event_nocheck (EV_P_ int fd, int revents)
677{ 1383{
678 ANFD *anfd = anfds + fd; 1384 ANFD *anfd = anfds + fd;
679 ev_io *w; 1385 ev_io *w;
680 1386
681 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1387 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
685 if (ev) 1391 if (ev)
686 ev_feed_event (EV_A_ (W)w, ev); 1392 ev_feed_event (EV_A_ (W)w, ev);
687 } 1393 }
688} 1394}
689 1395
1396/* do not submit kernel events for fds that have reify set */
1397/* because that means they changed while we were polling for new events */
1398inline_speed void
1399fd_event (EV_P_ int fd, int revents)
1400{
1401 ANFD *anfd = anfds + fd;
1402
1403 if (expect_true (!anfd->reify))
1404 fd_event_nocheck (EV_A_ fd, revents);
1405}
1406
690void 1407void
691ev_feed_fd_event (EV_P_ int fd, int revents) 1408ev_feed_fd_event (EV_P_ int fd, int revents)
692{ 1409{
693 if (fd >= 0 && fd < anfdmax) 1410 if (fd >= 0 && fd < anfdmax)
694 fd_event (EV_A_ fd, revents); 1411 fd_event_nocheck (EV_A_ fd, revents);
695} 1412}
696 1413
697void inline_size 1414/* make sure the external fd watch events are in-sync */
1415/* with the kernel/libev internal state */
1416inline_size void
698fd_reify (EV_P) 1417fd_reify (EV_P)
699{ 1418{
700 int i; 1419 int i;
1420
1421#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1422 for (i = 0; i < fdchangecnt; ++i)
1423 {
1424 int fd = fdchanges [i];
1425 ANFD *anfd = anfds + fd;
1426
1427 if (anfd->reify & EV__IOFDSET && anfd->head)
1428 {
1429 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1430
1431 if (handle != anfd->handle)
1432 {
1433 unsigned long arg;
1434
1435 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1436
1437 /* handle changed, but fd didn't - we need to do it in two steps */
1438 backend_modify (EV_A_ fd, anfd->events, 0);
1439 anfd->events = 0;
1440 anfd->handle = handle;
1441 }
1442 }
1443 }
1444#endif
701 1445
702 for (i = 0; i < fdchangecnt; ++i) 1446 for (i = 0; i < fdchangecnt; ++i)
703 { 1447 {
704 int fd = fdchanges [i]; 1448 int fd = fdchanges [i];
705 ANFD *anfd = anfds + fd; 1449 ANFD *anfd = anfds + fd;
706 ev_io *w; 1450 ev_io *w;
707 1451
708 unsigned char events = 0; 1452 unsigned char o_events = anfd->events;
1453 unsigned char o_reify = anfd->reify;
709 1454
710 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1455 anfd->reify = 0;
711 events |= (unsigned char)w->events;
712 1456
713#if EV_SELECT_IS_WINSOCKET 1457 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
714 if (events)
715 { 1458 {
716 unsigned long arg; 1459 anfd->events = 0;
717 #ifdef EV_FD_TO_WIN32_HANDLE 1460
718 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1461 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
719 #else 1462 anfd->events |= (unsigned char)w->events;
720 anfd->handle = _get_osfhandle (fd); 1463
721 #endif 1464 if (o_events != anfd->events)
722 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1465 o_reify = EV__IOFDSET; /* actually |= */
723 } 1466 }
724#endif
725 1467
726 { 1468 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); 1469 backend_modify (EV_A_ fd, o_events, anfd->events);
735 }
736 } 1470 }
737 1471
738 fdchangecnt = 0; 1472 fdchangecnt = 0;
739} 1473}
740 1474
741void inline_size 1475/* something about the given fd changed */
1476inline_size void
742fd_change (EV_P_ int fd, int flags) 1477fd_change (EV_P_ int fd, int flags)
743{ 1478{
744 unsigned char reify = anfds [fd].reify; 1479 unsigned char reify = anfds [fd].reify;
745 anfds [fd].reify |= flags; 1480 anfds [fd].reify |= flags;
746 1481
… …
750 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1485 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
751 fdchanges [fdchangecnt - 1] = fd; 1486 fdchanges [fdchangecnt - 1] = fd;
752 } 1487 }
753} 1488}
754 1489
755void inline_speed 1490/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1491inline_speed void ecb_cold
756fd_kill (EV_P_ int fd) 1492fd_kill (EV_P_ int fd)
757{ 1493{
758 ev_io *w; 1494 ev_io *w;
759 1495
760 while ((w = (ev_io *)anfds [fd].head)) 1496 while ((w = (ev_io *)anfds [fd].head))
… …
762 ev_io_stop (EV_A_ w); 1498 ev_io_stop (EV_A_ w);
763 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1499 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
764 } 1500 }
765} 1501}
766 1502
767int inline_size 1503/* check whether the given fd is actually valid, for error recovery */
1504inline_size int ecb_cold
768fd_valid (int fd) 1505fd_valid (int fd)
769{ 1506{
770#ifdef _WIN32 1507#ifdef _WIN32
771 return _get_osfhandle (fd) != -1; 1508 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
772#else 1509#else
773 return fcntl (fd, F_GETFD) != -1; 1510 return fcntl (fd, F_GETFD) != -1;
774#endif 1511#endif
775} 1512}
776 1513
777/* called on EBADF to verify fds */ 1514/* called on EBADF to verify fds */
778static void noinline 1515static void noinline ecb_cold
779fd_ebadf (EV_P) 1516fd_ebadf (EV_P)
780{ 1517{
781 int fd; 1518 int fd;
782 1519
783 for (fd = 0; fd < anfdmax; ++fd) 1520 for (fd = 0; fd < anfdmax; ++fd)
… …
785 if (!fd_valid (fd) && errno == EBADF) 1522 if (!fd_valid (fd) && errno == EBADF)
786 fd_kill (EV_A_ fd); 1523 fd_kill (EV_A_ fd);
787} 1524}
788 1525
789/* called on ENOMEM in select/poll to kill some fds and retry */ 1526/* called on ENOMEM in select/poll to kill some fds and retry */
790static void noinline 1527static void noinline ecb_cold
791fd_enomem (EV_P) 1528fd_enomem (EV_P)
792{ 1529{
793 int fd; 1530 int fd;
794 1531
795 for (fd = anfdmax; fd--; ) 1532 for (fd = anfdmax; fd--; )
796 if (anfds [fd].events) 1533 if (anfds [fd].events)
797 { 1534 {
798 fd_kill (EV_A_ fd); 1535 fd_kill (EV_A_ fd);
799 return; 1536 break;
800 } 1537 }
801} 1538}
802 1539
803/* usually called after fork if backend needs to re-arm all fds from scratch */ 1540/* usually called after fork if backend needs to re-arm all fds from scratch */
804static void noinline 1541static void noinline
… …
808 1545
809 for (fd = 0; fd < anfdmax; ++fd) 1546 for (fd = 0; fd < anfdmax; ++fd)
810 if (anfds [fd].events) 1547 if (anfds [fd].events)
811 { 1548 {
812 anfds [fd].events = 0; 1549 anfds [fd].events = 0;
1550 anfds [fd].emask = 0;
813 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1551 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
814 } 1552 }
815} 1553}
816 1554
1555/* used to prepare libev internal fd's */
1556/* this is not fork-safe */
1557inline_speed void
1558fd_intern (int fd)
1559{
1560#ifdef _WIN32
1561 unsigned long arg = 1;
1562 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1563#else
1564 fcntl (fd, F_SETFD, FD_CLOEXEC);
1565 fcntl (fd, F_SETFL, O_NONBLOCK);
1566#endif
1567}
1568
817/*****************************************************************************/ 1569/*****************************************************************************/
818 1570
819/* 1571/*
820 * the heap functions want a real array index. array index 0 uis guaranteed to not 1572 * 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 1573 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
822 * the branching factor of the d-tree. 1574 * the branching factor of the d-tree.
823 */ 1575 */
824 1576
825/* 1577/*
… …
834#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1586#define HEAP0 (DHEAP - 1) /* index of first element in heap */
835#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1587#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
836#define UPHEAP_DONE(p,k) ((p) == (k)) 1588#define UPHEAP_DONE(p,k) ((p) == (k))
837 1589
838/* away from the root */ 1590/* away from the root */
839void inline_speed 1591inline_speed void
840downheap (ANHE *heap, int N, int k) 1592downheap (ANHE *heap, int N, int k)
841{ 1593{
842 ANHE he = heap [k]; 1594 ANHE he = heap [k];
843 ANHE *E = heap + N + HEAP0; 1595 ANHE *E = heap + N + HEAP0;
844 1596
… …
884#define HEAP0 1 1636#define HEAP0 1
885#define HPARENT(k) ((k) >> 1) 1637#define HPARENT(k) ((k) >> 1)
886#define UPHEAP_DONE(p,k) (!(p)) 1638#define UPHEAP_DONE(p,k) (!(p))
887 1639
888/* away from the root */ 1640/* away from the root */
889void inline_speed 1641inline_speed void
890downheap (ANHE *heap, int N, int k) 1642downheap (ANHE *heap, int N, int k)
891{ 1643{
892 ANHE he = heap [k]; 1644 ANHE he = heap [k];
893 1645
894 for (;;) 1646 for (;;)
895 { 1647 {
896 int c = k << 1; 1648 int c = k << 1;
897 1649
898 if (c > N + HEAP0 - 1) 1650 if (c >= N + HEAP0)
899 break; 1651 break;
900 1652
901 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1653 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
902 ? 1 : 0; 1654 ? 1 : 0;
903 1655
… …
914 ev_active (ANHE_w (he)) = k; 1666 ev_active (ANHE_w (he)) = k;
915} 1667}
916#endif 1668#endif
917 1669
918/* towards the root */ 1670/* towards the root */
919void inline_speed 1671inline_speed void
920upheap (ANHE *heap, int k) 1672upheap (ANHE *heap, int k)
921{ 1673{
922 ANHE he = heap [k]; 1674 ANHE he = heap [k];
923 1675
924 for (;;) 1676 for (;;)
… …
935 1687
936 heap [k] = he; 1688 heap [k] = he;
937 ev_active (ANHE_w (he)) = k; 1689 ev_active (ANHE_w (he)) = k;
938} 1690}
939 1691
940void inline_size 1692/* move an element suitably so it is in a correct place */
1693inline_size void
941adjustheap (ANHE *heap, int N, int k) 1694adjustheap (ANHE *heap, int N, int k)
942{ 1695{
943 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1696 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
944 upheap (heap, k); 1697 upheap (heap, k);
945 else 1698 else
946 downheap (heap, N, k); 1699 downheap (heap, N, k);
947} 1700}
948 1701
949/* rebuild the heap: this function is used only once and executed rarely */ 1702/* rebuild the heap: this function is used only once and executed rarely */
950void inline_size 1703inline_size void
951reheap (ANHE *heap, int N) 1704reheap (ANHE *heap, int N)
952{ 1705{
953 int i; 1706 int i;
954 1707
955 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1708 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
958 upheap (heap, i + HEAP0); 1711 upheap (heap, i + HEAP0);
959} 1712}
960 1713
961/*****************************************************************************/ 1714/*****************************************************************************/
962 1715
1716/* associate signal watchers to a signal signal */
963typedef struct 1717typedef struct
964{ 1718{
1719 EV_ATOMIC_T pending;
1720#if EV_MULTIPLICITY
1721 EV_P;
1722#endif
965 WL head; 1723 WL head;
966 EV_ATOMIC_T gotsig;
967} ANSIG; 1724} ANSIG;
968 1725
969static ANSIG *signals; 1726static 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 1727
986/*****************************************************************************/ 1728/*****************************************************************************/
987 1729
988void inline_speed 1730#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 1731
1000static void noinline 1732static void noinline ecb_cold
1001evpipe_init (EV_P) 1733evpipe_init (EV_P)
1002{ 1734{
1003 if (!ev_is_active (&pipeev)) 1735 if (!ev_is_active (&pipe_w))
1004 { 1736 {
1005#if EV_USE_EVENTFD 1737# if EV_USE_EVENTFD
1738 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1739 if (evfd < 0 && errno == EINVAL)
1006 if ((evfd = eventfd (0, 0)) >= 0) 1740 evfd = eventfd (0, 0);
1741
1742 if (evfd >= 0)
1007 { 1743 {
1008 evpipe [0] = -1; 1744 evpipe [0] = -1;
1009 fd_intern (evfd); 1745 fd_intern (evfd); /* doing it twice doesn't hurt */
1010 ev_io_set (&pipeev, evfd, EV_READ); 1746 ev_io_set (&pipe_w, evfd, EV_READ);
1011 } 1747 }
1012 else 1748 else
1013#endif 1749# endif
1014 { 1750 {
1015 while (pipe (evpipe)) 1751 while (pipe (evpipe))
1016 syserr ("(libev) error creating signal/async pipe"); 1752 ev_syserr ("(libev) error creating signal/async pipe");
1017 1753
1018 fd_intern (evpipe [0]); 1754 fd_intern (evpipe [0]);
1019 fd_intern (evpipe [1]); 1755 fd_intern (evpipe [1]);
1020 ev_io_set (&pipeev, evpipe [0], EV_READ); 1756 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1021 } 1757 }
1022 1758
1023 ev_io_start (EV_A_ &pipeev); 1759 ev_io_start (EV_A_ &pipe_w);
1024 ev_unref (EV_A); /* watcher should not keep loop alive */ 1760 ev_unref (EV_A); /* watcher should not keep loop alive */
1025 } 1761 }
1026} 1762}
1027 1763
1028void inline_size 1764inline_speed void
1029evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1765evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1030{ 1766{
1031 if (!*flag) 1767 if (expect_true (*flag))
1768 return;
1769
1770 *flag = 1;
1771
1772 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1773
1774 pipe_write_skipped = 1;
1775
1776 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1777
1778 if (pipe_write_wanted)
1032 { 1779 {
1780 int old_errno;
1781
1782 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1783
1033 int old_errno = errno; /* save errno because write might clobber it */ 1784 old_errno = errno; /* save errno because write will clobber it */
1034
1035 *flag = 1;
1036 1785
1037#if EV_USE_EVENTFD 1786#if EV_USE_EVENTFD
1038 if (evfd >= 0) 1787 if (evfd >= 0)
1039 { 1788 {
1040 uint64_t counter = 1; 1789 uint64_t counter = 1;
1041 write (evfd, &counter, sizeof (uint64_t)); 1790 write (evfd, &counter, sizeof (uint64_t));
1042 } 1791 }
1043 else 1792 else
1044#endif 1793#endif
1794 {
1795 /* win32 people keep sending patches that change this write() to send() */
1796 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1797 /* so when you think this write should be a send instead, please find out */
1798 /* where your send() is from - it's definitely not the microsoft send, and */
1799 /* tell me. thank you. */
1045 write (evpipe [1], &old_errno, 1); 1800 write (evpipe [1], &(evpipe [1]), 1);
1801 }
1046 1802
1047 errno = old_errno; 1803 errno = old_errno;
1048 } 1804 }
1049} 1805}
1050 1806
1807/* called whenever the libev signal pipe */
1808/* got some events (signal, async) */
1051static void 1809static void
1052pipecb (EV_P_ ev_io *iow, int revents) 1810pipecb (EV_P_ ev_io *iow, int revents)
1053{ 1811{
1812 int i;
1813
1814 if (revents & EV_READ)
1815 {
1054#if EV_USE_EVENTFD 1816#if EV_USE_EVENTFD
1055 if (evfd >= 0) 1817 if (evfd >= 0)
1056 { 1818 {
1057 uint64_t counter; 1819 uint64_t counter;
1058 read (evfd, &counter, sizeof (uint64_t)); 1820 read (evfd, &counter, sizeof (uint64_t));
1059 } 1821 }
1060 else 1822 else
1061#endif 1823#endif
1062 { 1824 {
1063 char dummy; 1825 char dummy;
1826 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1064 read (evpipe [0], &dummy, 1); 1827 read (evpipe [0], &dummy, 1);
1828 }
1829 }
1830
1831 pipe_write_skipped = 0;
1832
1833#if EV_SIGNAL_ENABLE
1834 if (sig_pending)
1065 } 1835 {
1836 sig_pending = 0;
1066 1837
1067 if (gotsig && ev_is_default_loop (EV_A)) 1838 for (i = EV_NSIG - 1; i--; )
1068 { 1839 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); 1840 ev_feed_signal_event (EV_A_ i + 1);
1075 } 1841 }
1842#endif
1076 1843
1077#if EV_ASYNC_ENABLE 1844#if EV_ASYNC_ENABLE
1078 if (gotasync) 1845 if (async_pending)
1079 { 1846 {
1080 int i; 1847 async_pending = 0;
1081 gotasync = 0;
1082 1848
1083 for (i = asynccnt; i--; ) 1849 for (i = asynccnt; i--; )
1084 if (asyncs [i]->sent) 1850 if (asyncs [i]->sent)
1085 { 1851 {
1086 asyncs [i]->sent = 0; 1852 asyncs [i]->sent = 0;
… …
1090#endif 1856#endif
1091} 1857}
1092 1858
1093/*****************************************************************************/ 1859/*****************************************************************************/
1094 1860
1861void
1862ev_feed_signal (int signum)
1863{
1864#if EV_MULTIPLICITY
1865 EV_P = signals [signum - 1].loop;
1866
1867 if (!EV_A)
1868 return;
1869#endif
1870
1871 if (!ev_active (&pipe_w))
1872 return;
1873
1874 signals [signum - 1].pending = 1;
1875 evpipe_write (EV_A_ &sig_pending);
1876}
1877
1095static void 1878static void
1096ev_sighandler (int signum) 1879ev_sighandler (int signum)
1097{ 1880{
1098#if EV_MULTIPLICITY
1099 struct ev_loop *loop = &default_loop_struct;
1100#endif
1101
1102#if _WIN32 1881#ifdef _WIN32
1103 signal (signum, ev_sighandler); 1882 signal (signum, ev_sighandler);
1104#endif 1883#endif
1105 1884
1106 signals [signum - 1].gotsig = 1; 1885 ev_feed_signal (signum);
1107 evpipe_write (EV_A_ &gotsig);
1108} 1886}
1109 1887
1110void noinline 1888void noinline
1111ev_feed_signal_event (EV_P_ int signum) 1889ev_feed_signal_event (EV_P_ int signum)
1112{ 1890{
1113 WL w; 1891 WL w;
1114 1892
1893 if (expect_false (signum <= 0 || signum > EV_NSIG))
1894 return;
1895
1896 --signum;
1897
1115#if EV_MULTIPLICITY 1898#if EV_MULTIPLICITY
1116 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1899 /* it is permissible to try to feed a signal to the wrong loop */
1117#endif 1900 /* or, likely more useful, feeding a signal nobody is waiting for */
1118 1901
1119 --signum; 1902 if (expect_false (signals [signum].loop != EV_A))
1120
1121 if (signum < 0 || signum >= signalmax)
1122 return; 1903 return;
1904#endif
1123 1905
1124 signals [signum].gotsig = 0; 1906 signals [signum].pending = 0;
1125 1907
1126 for (w = signals [signum].head; w; w = w->next) 1908 for (w = signals [signum].head; w; w = w->next)
1127 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1909 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1128} 1910}
1129 1911
1912#if EV_USE_SIGNALFD
1913static void
1914sigfdcb (EV_P_ ev_io *iow, int revents)
1915{
1916 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1917
1918 for (;;)
1919 {
1920 ssize_t res = read (sigfd, si, sizeof (si));
1921
1922 /* not ISO-C, as res might be -1, but works with SuS */
1923 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1924 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1925
1926 if (res < (ssize_t)sizeof (si))
1927 break;
1928 }
1929}
1930#endif
1931
1932#endif
1933
1130/*****************************************************************************/ 1934/*****************************************************************************/
1131 1935
1936#if EV_CHILD_ENABLE
1132static WL childs [EV_PID_HASHSIZE]; 1937static WL childs [EV_PID_HASHSIZE];
1133
1134#ifndef _WIN32
1135 1938
1136static ev_signal childev; 1939static ev_signal childev;
1137 1940
1138#ifndef WIFCONTINUED 1941#ifndef WIFCONTINUED
1139# define WIFCONTINUED(status) 0 1942# define WIFCONTINUED(status) 0
1140#endif 1943#endif
1141 1944
1142void inline_speed 1945/* handle a single child status event */
1946inline_speed void
1143child_reap (EV_P_ int chain, int pid, int status) 1947child_reap (EV_P_ int chain, int pid, int status)
1144{ 1948{
1145 ev_child *w; 1949 ev_child *w;
1146 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1950 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1147 1951
1148 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1952 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1149 { 1953 {
1150 if ((w->pid == pid || !w->pid) 1954 if ((w->pid == pid || !w->pid)
1151 && (!traced || (w->flags & 1))) 1955 && (!traced || (w->flags & 1)))
1152 { 1956 {
1153 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1957 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1160 1964
1161#ifndef WCONTINUED 1965#ifndef WCONTINUED
1162# define WCONTINUED 0 1966# define WCONTINUED 0
1163#endif 1967#endif
1164 1968
1969/* called on sigchld etc., calls waitpid */
1165static void 1970static void
1166childcb (EV_P_ ev_signal *sw, int revents) 1971childcb (EV_P_ ev_signal *sw, int revents)
1167{ 1972{
1168 int pid, status; 1973 int pid, status;
1169 1974
… …
1177 /* make sure we are called again until all children have been reaped */ 1982 /* 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 */ 1983 /* 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); 1984 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1180 1985
1181 child_reap (EV_A_ pid, pid, status); 1986 child_reap (EV_A_ pid, pid, status);
1182 if (EV_PID_HASHSIZE > 1) 1987 if ((EV_PID_HASHSIZE) > 1)
1183 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1988 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1184} 1989}
1185 1990
1186#endif 1991#endif
1187 1992
1188/*****************************************************************************/ 1993/*****************************************************************************/
1189 1994
1995#if EV_USE_IOCP
1996# include "ev_iocp.c"
1997#endif
1190#if EV_USE_PORT 1998#if EV_USE_PORT
1191# include "ev_port.c" 1999# include "ev_port.c"
1192#endif 2000#endif
1193#if EV_USE_KQUEUE 2001#if EV_USE_KQUEUE
1194# include "ev_kqueue.c" 2002# include "ev_kqueue.c"
… …
1201#endif 2009#endif
1202#if EV_USE_SELECT 2010#if EV_USE_SELECT
1203# include "ev_select.c" 2011# include "ev_select.c"
1204#endif 2012#endif
1205 2013
1206int 2014int ecb_cold
1207ev_version_major (void) 2015ev_version_major (void)
1208{ 2016{
1209 return EV_VERSION_MAJOR; 2017 return EV_VERSION_MAJOR;
1210} 2018}
1211 2019
1212int 2020int ecb_cold
1213ev_version_minor (void) 2021ev_version_minor (void)
1214{ 2022{
1215 return EV_VERSION_MINOR; 2023 return EV_VERSION_MINOR;
1216} 2024}
1217 2025
1218/* return true if we are running with elevated privileges and should ignore env variables */ 2026/* return true if we are running with elevated privileges and should ignore env variables */
1219int inline_size 2027int inline_size ecb_cold
1220enable_secure (void) 2028enable_secure (void)
1221{ 2029{
1222#ifdef _WIN32 2030#ifdef _WIN32
1223 return 0; 2031 return 0;
1224#else 2032#else
1225 return getuid () != geteuid () 2033 return getuid () != geteuid ()
1226 || getgid () != getegid (); 2034 || getgid () != getegid ();
1227#endif 2035#endif
1228} 2036}
1229 2037
1230unsigned int 2038unsigned int ecb_cold
1231ev_supported_backends (void) 2039ev_supported_backends (void)
1232{ 2040{
1233 unsigned int flags = 0; 2041 unsigned int flags = 0;
1234 2042
1235 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2043 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1239 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2047 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1240 2048
1241 return flags; 2049 return flags;
1242} 2050}
1243 2051
1244unsigned int 2052unsigned int ecb_cold
1245ev_recommended_backends (void) 2053ev_recommended_backends (void)
1246{ 2054{
1247 unsigned int flags = ev_supported_backends (); 2055 unsigned int flags = ev_supported_backends ();
1248 2056
1249#ifndef __NetBSD__ 2057#ifndef __NetBSD__
1250 /* kqueue is borked on everything but netbsd apparently */ 2058 /* kqueue is borked on everything but netbsd apparently */
1251 /* it usually doesn't work correctly on anything but sockets and pipes */ 2059 /* it usually doesn't work correctly on anything but sockets and pipes */
1252 flags &= ~EVBACKEND_KQUEUE; 2060 flags &= ~EVBACKEND_KQUEUE;
1253#endif 2061#endif
1254#ifdef __APPLE__ 2062#ifdef __APPLE__
1255 // flags &= ~EVBACKEND_KQUEUE; for documentation 2063 /* only select works correctly on that "unix-certified" platform */
1256 flags &= ~EVBACKEND_POLL; 2064 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
2065 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
2066#endif
2067#ifdef __FreeBSD__
2068 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1257#endif 2069#endif
1258 2070
1259 return flags; 2071 return flags;
1260} 2072}
1261 2073
1262unsigned int 2074unsigned int ecb_cold
1263ev_embeddable_backends (void) 2075ev_embeddable_backends (void)
1264{ 2076{
1265 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2077 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1266 2078
1267 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2079 /* 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 */ 2080 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1269 flags &= ~EVBACKEND_EPOLL; 2081 flags &= ~EVBACKEND_EPOLL;
1270 2082
1271 return flags; 2083 return flags;
1272} 2084}
1273 2085
1274unsigned int 2086unsigned int
1275ev_backend (EV_P) 2087ev_backend (EV_P)
1276{ 2088{
1277 return backend; 2089 return backend;
1278} 2090}
1279 2091
2092#if EV_FEATURE_API
1280unsigned int 2093unsigned int
1281ev_loop_count (EV_P) 2094ev_iteration (EV_P)
1282{ 2095{
1283 return loop_count; 2096 return loop_count;
2097}
2098
2099unsigned int
2100ev_depth (EV_P)
2101{
2102 return loop_depth;
1284} 2103}
1285 2104
1286void 2105void
1287ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2106ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1288{ 2107{
… …
1293ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2112ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1294{ 2113{
1295 timeout_blocktime = interval; 2114 timeout_blocktime = interval;
1296} 2115}
1297 2116
2117void
2118ev_set_userdata (EV_P_ void *data)
2119{
2120 userdata = data;
2121}
2122
2123void *
2124ev_userdata (EV_P)
2125{
2126 return userdata;
2127}
2128
2129void
2130ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
2131{
2132 invoke_cb = invoke_pending_cb;
2133}
2134
2135void
2136ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
2137{
2138 release_cb = release;
2139 acquire_cb = acquire;
2140}
2141#endif
2142
2143/* initialise a loop structure, must be zero-initialised */
1298static void noinline 2144static void noinline ecb_cold
1299loop_init (EV_P_ unsigned int flags) 2145loop_init (EV_P_ unsigned int flags)
1300{ 2146{
1301 if (!backend) 2147 if (!backend)
1302 { 2148 {
2149 origflags = flags;
2150
2151#if EV_USE_REALTIME
2152 if (!have_realtime)
2153 {
2154 struct timespec ts;
2155
2156 if (!clock_gettime (CLOCK_REALTIME, &ts))
2157 have_realtime = 1;
2158 }
2159#endif
2160
1303#if EV_USE_MONOTONIC 2161#if EV_USE_MONOTONIC
2162 if (!have_monotonic)
1304 { 2163 {
1305 struct timespec ts; 2164 struct timespec ts;
2165
1306 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 2166 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1307 have_monotonic = 1; 2167 have_monotonic = 1;
1308 } 2168 }
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 2169#endif
1324 2170
1325 /* pid check not overridable via env */ 2171 /* pid check not overridable via env */
1326#ifndef _WIN32 2172#ifndef _WIN32
1327 if (flags & EVFLAG_FORKCHECK) 2173 if (flags & EVFLAG_FORKCHECK)
… …
1331 if (!(flags & EVFLAG_NOENV) 2177 if (!(flags & EVFLAG_NOENV)
1332 && !enable_secure () 2178 && !enable_secure ()
1333 && getenv ("LIBEV_FLAGS")) 2179 && getenv ("LIBEV_FLAGS"))
1334 flags = atoi (getenv ("LIBEV_FLAGS")); 2180 flags = atoi (getenv ("LIBEV_FLAGS"));
1335 2181
1336 if (!(flags & 0x0000ffffU)) 2182 ev_rt_now = ev_time ();
2183 mn_now = get_clock ();
2184 now_floor = mn_now;
2185 rtmn_diff = ev_rt_now - mn_now;
2186#if EV_FEATURE_API
2187 invoke_cb = ev_invoke_pending;
2188#endif
2189
2190 io_blocktime = 0.;
2191 timeout_blocktime = 0.;
2192 backend = 0;
2193 backend_fd = -1;
2194 sig_pending = 0;
2195#if EV_ASYNC_ENABLE
2196 async_pending = 0;
2197#endif
2198 pipe_write_skipped = 0;
2199 pipe_write_wanted = 0;
2200#if EV_USE_INOTIFY
2201 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2202#endif
2203#if EV_USE_SIGNALFD
2204 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
2205#endif
2206
2207 if (!(flags & EVBACKEND_MASK))
1337 flags |= ev_recommended_backends (); 2208 flags |= ev_recommended_backends ();
1338 2209
2210#if EV_USE_IOCP
2211 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2212#endif
1339#if EV_USE_PORT 2213#if EV_USE_PORT
1340 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2214 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1341#endif 2215#endif
1342#if EV_USE_KQUEUE 2216#if EV_USE_KQUEUE
1343 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2217 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1350#endif 2224#endif
1351#if EV_USE_SELECT 2225#if EV_USE_SELECT
1352 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 2226 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1353#endif 2227#endif
1354 2228
2229 ev_prepare_init (&pending_w, pendingcb);
2230
2231#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1355 ev_init (&pipeev, pipecb); 2232 ev_init (&pipe_w, pipecb);
1356 ev_set_priority (&pipeev, EV_MAXPRI); 2233 ev_set_priority (&pipe_w, EV_MAXPRI);
2234#endif
1357 } 2235 }
1358} 2236}
1359 2237
1360static void noinline 2238/* free up a loop structure */
2239void ecb_cold
1361loop_destroy (EV_P) 2240ev_loop_destroy (EV_P)
1362{ 2241{
1363 int i; 2242 int i;
1364 2243
2244#if EV_MULTIPLICITY
2245 /* mimic free (0) */
2246 if (!EV_A)
2247 return;
2248#endif
2249
2250#if EV_CLEANUP_ENABLE
2251 /* queue cleanup watchers (and execute them) */
2252 if (expect_false (cleanupcnt))
2253 {
2254 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2255 EV_INVOKE_PENDING;
2256 }
2257#endif
2258
2259#if EV_CHILD_ENABLE
2260 if (ev_is_active (&childev))
2261 {
2262 ev_ref (EV_A); /* child watcher */
2263 ev_signal_stop (EV_A_ &childev);
2264 }
2265#endif
2266
1365 if (ev_is_active (&pipeev)) 2267 if (ev_is_active (&pipe_w))
1366 { 2268 {
1367 ev_ref (EV_A); /* signal watcher */ 2269 /*ev_ref (EV_A);*/
1368 ev_io_stop (EV_A_ &pipeev); 2270 /*ev_io_stop (EV_A_ &pipe_w);*/
1369 2271
1370#if EV_USE_EVENTFD 2272#if EV_USE_EVENTFD
1371 if (evfd >= 0) 2273 if (evfd >= 0)
1372 close (evfd); 2274 close (evfd);
1373#endif 2275#endif
1374 2276
1375 if (evpipe [0] >= 0) 2277 if (evpipe [0] >= 0)
1376 { 2278 {
1377 close (evpipe [0]); 2279 EV_WIN32_CLOSE_FD (evpipe [0]);
1378 close (evpipe [1]); 2280 EV_WIN32_CLOSE_FD (evpipe [1]);
1379 } 2281 }
1380 } 2282 }
2283
2284#if EV_USE_SIGNALFD
2285 if (ev_is_active (&sigfd_w))
2286 close (sigfd);
2287#endif
1381 2288
1382#if EV_USE_INOTIFY 2289#if EV_USE_INOTIFY
1383 if (fs_fd >= 0) 2290 if (fs_fd >= 0)
1384 close (fs_fd); 2291 close (fs_fd);
1385#endif 2292#endif
1386 2293
1387 if (backend_fd >= 0) 2294 if (backend_fd >= 0)
1388 close (backend_fd); 2295 close (backend_fd);
1389 2296
2297#if EV_USE_IOCP
2298 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2299#endif
1390#if EV_USE_PORT 2300#if EV_USE_PORT
1391 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2301 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1392#endif 2302#endif
1393#if EV_USE_KQUEUE 2303#if EV_USE_KQUEUE
1394 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2304 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1409#if EV_IDLE_ENABLE 2319#if EV_IDLE_ENABLE
1410 array_free (idle, [i]); 2320 array_free (idle, [i]);
1411#endif 2321#endif
1412 } 2322 }
1413 2323
1414 ev_free (anfds); anfdmax = 0; 2324 ev_free (anfds); anfds = 0; anfdmax = 0;
1415 2325
1416 /* have to use the microsoft-never-gets-it-right macro */ 2326 /* have to use the microsoft-never-gets-it-right macro */
2327 array_free (rfeed, EMPTY);
1417 array_free (fdchange, EMPTY); 2328 array_free (fdchange, EMPTY);
1418 array_free (timer, EMPTY); 2329 array_free (timer, EMPTY);
1419#if EV_PERIODIC_ENABLE 2330#if EV_PERIODIC_ENABLE
1420 array_free (periodic, EMPTY); 2331 array_free (periodic, EMPTY);
1421#endif 2332#endif
1422#if EV_FORK_ENABLE 2333#if EV_FORK_ENABLE
1423 array_free (fork, EMPTY); 2334 array_free (fork, EMPTY);
1424#endif 2335#endif
2336#if EV_CLEANUP_ENABLE
2337 array_free (cleanup, EMPTY);
2338#endif
1425 array_free (prepare, EMPTY); 2339 array_free (prepare, EMPTY);
1426 array_free (check, EMPTY); 2340 array_free (check, EMPTY);
1427#if EV_ASYNC_ENABLE 2341#if EV_ASYNC_ENABLE
1428 array_free (async, EMPTY); 2342 array_free (async, EMPTY);
1429#endif 2343#endif
1430 2344
1431 backend = 0; 2345 backend = 0;
2346
2347#if EV_MULTIPLICITY
2348 if (ev_is_default_loop (EV_A))
2349#endif
2350 ev_default_loop_ptr = 0;
2351#if EV_MULTIPLICITY
2352 else
2353 ev_free (EV_A);
2354#endif
1432} 2355}
1433 2356
1434#if EV_USE_INOTIFY 2357#if EV_USE_INOTIFY
1435void inline_size infy_fork (EV_P); 2358inline_size void infy_fork (EV_P);
1436#endif 2359#endif
1437 2360
1438void inline_size 2361inline_size void
1439loop_fork (EV_P) 2362loop_fork (EV_P)
1440{ 2363{
1441#if EV_USE_PORT 2364#if EV_USE_PORT
1442 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2365 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1443#endif 2366#endif
… …
1449#endif 2372#endif
1450#if EV_USE_INOTIFY 2373#if EV_USE_INOTIFY
1451 infy_fork (EV_A); 2374 infy_fork (EV_A);
1452#endif 2375#endif
1453 2376
1454 if (ev_is_active (&pipeev)) 2377 if (ev_is_active (&pipe_w))
1455 { 2378 {
1456 /* this "locks" the handlers against writing to the pipe */ 2379 /* 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 2380
1463 ev_ref (EV_A); 2381 ev_ref (EV_A);
1464 ev_io_stop (EV_A_ &pipeev); 2382 ev_io_stop (EV_A_ &pipe_w);
1465 2383
1466#if EV_USE_EVENTFD 2384#if EV_USE_EVENTFD
1467 if (evfd >= 0) 2385 if (evfd >= 0)
1468 close (evfd); 2386 close (evfd);
1469#endif 2387#endif
1470 2388
1471 if (evpipe [0] >= 0) 2389 if (evpipe [0] >= 0)
1472 { 2390 {
1473 close (evpipe [0]); 2391 EV_WIN32_CLOSE_FD (evpipe [0]);
1474 close (evpipe [1]); 2392 EV_WIN32_CLOSE_FD (evpipe [1]);
1475 } 2393 }
1476 2394
2395#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1477 evpipe_init (EV_A); 2396 evpipe_init (EV_A);
1478 /* now iterate over everything, in case we missed something */ 2397 /* now iterate over everything, in case we missed something */
1479 pipecb (EV_A_ &pipeev, EV_READ); 2398 pipecb (EV_A_ &pipe_w, EV_READ);
2399#endif
1480 } 2400 }
1481 2401
1482 postfork = 0; 2402 postfork = 0;
1483} 2403}
1484 2404
1485#if EV_MULTIPLICITY 2405#if EV_MULTIPLICITY
1486 2406
1487struct ev_loop * 2407struct ev_loop * ecb_cold
1488ev_loop_new (unsigned int flags) 2408ev_loop_new (unsigned int flags)
1489{ 2409{
1490 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2410 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1491 2411
1492 memset (loop, 0, sizeof (struct ev_loop)); 2412 memset (EV_A, 0, sizeof (struct ev_loop));
1493
1494 loop_init (EV_A_ flags); 2413 loop_init (EV_A_ flags);
1495 2414
1496 if (ev_backend (EV_A)) 2415 if (ev_backend (EV_A))
1497 return loop; 2416 return EV_A;
1498 2417
2418 ev_free (EV_A);
1499 return 0; 2419 return 0;
1500} 2420}
1501 2421
1502void 2422#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 2423
1515#if EV_VERIFY 2424#if EV_VERIFY
1516static void noinline 2425static void noinline ecb_cold
1517verify_watcher (EV_P_ W w) 2426verify_watcher (EV_P_ W w)
1518{ 2427{
1519 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2428 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1520 2429
1521 if (w->pending) 2430 if (w->pending)
1522 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2431 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1523} 2432}
1524 2433
1525static void noinline 2434static void noinline ecb_cold
1526verify_heap (EV_P_ ANHE *heap, int N) 2435verify_heap (EV_P_ ANHE *heap, int N)
1527{ 2436{
1528 int i; 2437 int i;
1529 2438
1530 for (i = HEAP0; i < N + HEAP0; ++i) 2439 for (i = HEAP0; i < N + HEAP0; ++i)
1531 { 2440 {
1532 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 2441 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]))); 2442 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])))); 2443 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1535 2444
1536 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2445 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1537 } 2446 }
1538} 2447}
1539 2448
1540static void noinline 2449static void noinline ecb_cold
1541array_verify (EV_P_ W *ws, int cnt) 2450array_verify (EV_P_ W *ws, int cnt)
1542{ 2451{
1543 while (cnt--) 2452 while (cnt--)
1544 { 2453 {
1545 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2454 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1546 verify_watcher (EV_A_ ws [cnt]); 2455 verify_watcher (EV_A_ ws [cnt]);
1547 } 2456 }
1548} 2457}
1549#endif 2458#endif
1550 2459
1551void 2460#if EV_FEATURE_API
2461void ecb_cold
1552ev_loop_verify (EV_P) 2462ev_verify (EV_P)
1553{ 2463{
1554#if EV_VERIFY 2464#if EV_VERIFY
1555 int i; 2465 int i;
1556 WL w; 2466 WL w;
1557 2467
1558 assert (activecnt >= -1); 2468 assert (activecnt >= -1);
1559 2469
1560 assert (fdchangemax >= fdchangecnt); 2470 assert (fdchangemax >= fdchangecnt);
1561 for (i = 0; i < fdchangecnt; ++i) 2471 for (i = 0; i < fdchangecnt; ++i)
1562 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 2472 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1563 2473
1564 assert (anfdmax >= 0); 2474 assert (anfdmax >= 0);
1565 for (i = 0; i < anfdmax; ++i) 2475 for (i = 0; i < anfdmax; ++i)
1566 for (w = anfds [i].head; w; w = w->next) 2476 for (w = anfds [i].head; w; w = w->next)
1567 { 2477 {
1568 verify_watcher (EV_A_ (W)w); 2478 verify_watcher (EV_A_ (W)w);
1569 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 2479 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)); 2480 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1571 } 2481 }
1572 2482
1573 assert (timermax >= timercnt); 2483 assert (timermax >= timercnt);
1574 verify_heap (EV_A_ timers, timercnt); 2484 verify_heap (EV_A_ timers, timercnt);
1575 2485
… …
1591#if EV_FORK_ENABLE 2501#if EV_FORK_ENABLE
1592 assert (forkmax >= forkcnt); 2502 assert (forkmax >= forkcnt);
1593 array_verify (EV_A_ (W *)forks, forkcnt); 2503 array_verify (EV_A_ (W *)forks, forkcnt);
1594#endif 2504#endif
1595 2505
2506#if EV_CLEANUP_ENABLE
2507 assert (cleanupmax >= cleanupcnt);
2508 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2509#endif
2510
1596#if EV_ASYNC_ENABLE 2511#if EV_ASYNC_ENABLE
1597 assert (asyncmax >= asynccnt); 2512 assert (asyncmax >= asynccnt);
1598 array_verify (EV_A_ (W *)asyncs, asynccnt); 2513 array_verify (EV_A_ (W *)asyncs, asynccnt);
1599#endif 2514#endif
1600 2515
2516#if EV_PREPARE_ENABLE
1601 assert (preparemax >= preparecnt); 2517 assert (preparemax >= preparecnt);
1602 array_verify (EV_A_ (W *)prepares, preparecnt); 2518 array_verify (EV_A_ (W *)prepares, preparecnt);
2519#endif
1603 2520
2521#if EV_CHECK_ENABLE
1604 assert (checkmax >= checkcnt); 2522 assert (checkmax >= checkcnt);
1605 array_verify (EV_A_ (W *)checks, checkcnt); 2523 array_verify (EV_A_ (W *)checks, checkcnt);
2524#endif
1606 2525
1607# if 0 2526# if 0
2527#if EV_CHILD_ENABLE
1608 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2528 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) 2529 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2530#endif
1610# endif 2531# endif
1611#endif 2532#endif
1612} 2533}
1613 2534#endif
1614#endif /* multiplicity */
1615 2535
1616#if EV_MULTIPLICITY 2536#if EV_MULTIPLICITY
1617struct ev_loop * 2537struct ev_loop * ecb_cold
1618ev_default_loop_init (unsigned int flags)
1619#else 2538#else
1620int 2539int
2540#endif
1621ev_default_loop (unsigned int flags) 2541ev_default_loop (unsigned int flags)
1622#endif
1623{ 2542{
1624 if (!ev_default_loop_ptr) 2543 if (!ev_default_loop_ptr)
1625 { 2544 {
1626#if EV_MULTIPLICITY 2545#if EV_MULTIPLICITY
1627 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2546 EV_P = ev_default_loop_ptr = &default_loop_struct;
1628#else 2547#else
1629 ev_default_loop_ptr = 1; 2548 ev_default_loop_ptr = 1;
1630#endif 2549#endif
1631 2550
1632 loop_init (EV_A_ flags); 2551 loop_init (EV_A_ flags);
1633 2552
1634 if (ev_backend (EV_A)) 2553 if (ev_backend (EV_A))
1635 { 2554 {
1636#ifndef _WIN32 2555#if EV_CHILD_ENABLE
1637 ev_signal_init (&childev, childcb, SIGCHLD); 2556 ev_signal_init (&childev, childcb, SIGCHLD);
1638 ev_set_priority (&childev, EV_MAXPRI); 2557 ev_set_priority (&childev, EV_MAXPRI);
1639 ev_signal_start (EV_A_ &childev); 2558 ev_signal_start (EV_A_ &childev);
1640 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2559 ev_unref (EV_A); /* child watcher should not keep loop alive */
1641#endif 2560#endif
… …
1646 2565
1647 return ev_default_loop_ptr; 2566 return ev_default_loop_ptr;
1648} 2567}
1649 2568
1650void 2569void
1651ev_default_destroy (void) 2570ev_loop_fork (EV_P)
1652{ 2571{
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 */ 2572 postfork = 1; /* must be in line with ev_default_fork */
1674} 2573}
1675 2574
1676/*****************************************************************************/ 2575/*****************************************************************************/
1677 2576
1678void 2577void
1679ev_invoke (EV_P_ void *w, int revents) 2578ev_invoke (EV_P_ void *w, int revents)
1680{ 2579{
1681 EV_CB_INVOKE ((W)w, revents); 2580 EV_CB_INVOKE ((W)w, revents);
1682} 2581}
1683 2582
1684void inline_speed 2583unsigned int
1685call_pending (EV_P) 2584ev_pending_count (EV_P)
2585{
2586 int pri;
2587 unsigned int count = 0;
2588
2589 for (pri = NUMPRI; pri--; )
2590 count += pendingcnt [pri];
2591
2592 return count;
2593}
2594
2595void noinline
2596ev_invoke_pending (EV_P)
1686{ 2597{
1687 int pri; 2598 int pri;
1688 2599
1689 for (pri = NUMPRI; pri--; ) 2600 for (pri = NUMPRI; pri--; )
1690 while (pendingcnt [pri]) 2601 while (pendingcnt [pri])
1691 { 2602 {
1692 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2603 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1693 2604
1694 if (expect_true (p->w))
1695 {
1696 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1697
1698 p->w->pending = 0; 2605 p->w->pending = 0;
1699 EV_CB_INVOKE (p->w, p->events); 2606 EV_CB_INVOKE (p->w, p->events);
1700 EV_FREQUENT_CHECK; 2607 EV_FREQUENT_CHECK;
1701 }
1702 } 2608 }
1703} 2609}
1704 2610
1705#if EV_IDLE_ENABLE 2611#if EV_IDLE_ENABLE
1706void inline_size 2612/* make idle watchers pending. this handles the "call-idle */
2613/* only when higher priorities are idle" logic */
2614inline_size void
1707idle_reify (EV_P) 2615idle_reify (EV_P)
1708{ 2616{
1709 if (expect_false (idleall)) 2617 if (expect_false (idleall))
1710 { 2618 {
1711 int pri; 2619 int pri;
… …
1723 } 2631 }
1724 } 2632 }
1725} 2633}
1726#endif 2634#endif
1727 2635
1728void inline_size 2636/* make timers pending */
2637inline_size void
1729timers_reify (EV_P) 2638timers_reify (EV_P)
1730{ 2639{
1731 EV_FREQUENT_CHECK; 2640 EV_FREQUENT_CHECK;
1732 2641
1733 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2642 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1734 { 2643 {
1735 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2644 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 { 2645 {
2646 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2647
2648 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2649
2650 /* first reschedule or stop timer */
2651 if (w->repeat)
2652 {
1742 ev_at (w) += w->repeat; 2653 ev_at (w) += w->repeat;
1743 if (ev_at (w) < mn_now) 2654 if (ev_at (w) < mn_now)
1744 ev_at (w) = mn_now; 2655 ev_at (w) = mn_now;
1745 2656
1746 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2657 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1747 2658
1748 ANHE_at_cache (timers [HEAP0]); 2659 ANHE_at_cache (timers [HEAP0]);
1749 downheap (timers, timercnt, HEAP0); 2660 downheap (timers, timercnt, HEAP0);
2661 }
2662 else
2663 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2664
2665 EV_FREQUENT_CHECK;
2666 feed_reverse (EV_A_ (W)w);
1750 } 2667 }
1751 else 2668 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1752 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1753 2669
1754 EV_FREQUENT_CHECK; 2670 feed_reverse_done (EV_A_ EV_TIMER);
1755 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1756 } 2671 }
1757} 2672}
1758 2673
1759#if EV_PERIODIC_ENABLE 2674#if EV_PERIODIC_ENABLE
1760void inline_size 2675
2676static void noinline
2677periodic_recalc (EV_P_ ev_periodic *w)
2678{
2679 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2680 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2681
2682 /* the above almost always errs on the low side */
2683 while (at <= ev_rt_now)
2684 {
2685 ev_tstamp nat = at + w->interval;
2686
2687 /* when resolution fails us, we use ev_rt_now */
2688 if (expect_false (nat == at))
2689 {
2690 at = ev_rt_now;
2691 break;
2692 }
2693
2694 at = nat;
2695 }
2696
2697 ev_at (w) = at;
2698}
2699
2700/* make periodics pending */
2701inline_size void
1761periodics_reify (EV_P) 2702periodics_reify (EV_P)
1762{ 2703{
1763 EV_FREQUENT_CHECK; 2704 EV_FREQUENT_CHECK;
1764 2705
1765 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2706 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1766 { 2707 {
1767 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2708 int feed_count = 0;
1768 2709
1769 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2710 do
1770
1771 /* first reschedule or stop timer */
1772 if (w->reschedule_cb)
1773 { 2711 {
2712 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2713
2714 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2715
2716 /* first reschedule or stop timer */
2717 if (w->reschedule_cb)
2718 {
1774 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2719 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1775 2720
1776 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2721 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1777 2722
1778 ANHE_at_cache (periodics [HEAP0]); 2723 ANHE_at_cache (periodics [HEAP0]);
1779 downheap (periodics, periodiccnt, HEAP0); 2724 downheap (periodics, periodiccnt, HEAP0);
2725 }
2726 else if (w->interval)
2727 {
2728 periodic_recalc (EV_A_ w);
2729 ANHE_at_cache (periodics [HEAP0]);
2730 downheap (periodics, periodiccnt, HEAP0);
2731 }
2732 else
2733 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2734
2735 EV_FREQUENT_CHECK;
2736 feed_reverse (EV_A_ (W)w);
1780 } 2737 }
1781 else if (w->interval) 2738 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 2739
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); 2740 feed_reverse_done (EV_A_ EV_PERIODIC);
1805 } 2741 }
1806} 2742}
1807 2743
2744/* simply recalculate all periodics */
2745/* TODO: maybe ensure that at least one event happens when jumping forward? */
1808static void noinline 2746static void noinline ecb_cold
1809periodics_reschedule (EV_P) 2747periodics_reschedule (EV_P)
1810{ 2748{
1811 int i; 2749 int i;
1812 2750
1813 /* adjust periodics after time jump */ 2751 /* adjust periodics after time jump */
… …
1816 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2754 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1817 2755
1818 if (w->reschedule_cb) 2756 if (w->reschedule_cb)
1819 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2757 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1820 else if (w->interval) 2758 else if (w->interval)
1821 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2759 periodic_recalc (EV_A_ w);
1822 2760
1823 ANHE_at_cache (periodics [i]); 2761 ANHE_at_cache (periodics [i]);
1824 } 2762 }
1825 2763
1826 reheap (periodics, periodiccnt); 2764 reheap (periodics, periodiccnt);
1827} 2765}
1828#endif 2766#endif
1829 2767
1830void inline_speed 2768/* adjust all timers by a given offset */
2769static void noinline ecb_cold
2770timers_reschedule (EV_P_ ev_tstamp adjust)
2771{
2772 int i;
2773
2774 for (i = 0; i < timercnt; ++i)
2775 {
2776 ANHE *he = timers + i + HEAP0;
2777 ANHE_w (*he)->at += adjust;
2778 ANHE_at_cache (*he);
2779 }
2780}
2781
2782/* fetch new monotonic and realtime times from the kernel */
2783/* also detect if there was a timejump, and act accordingly */
2784inline_speed void
1831time_update (EV_P_ ev_tstamp max_block) 2785time_update (EV_P_ ev_tstamp max_block)
1832{ 2786{
1833 int i;
1834
1835#if EV_USE_MONOTONIC 2787#if EV_USE_MONOTONIC
1836 if (expect_true (have_monotonic)) 2788 if (expect_true (have_monotonic))
1837 { 2789 {
2790 int i;
1838 ev_tstamp odiff = rtmn_diff; 2791 ev_tstamp odiff = rtmn_diff;
1839 2792
1840 mn_now = get_clock (); 2793 mn_now = get_clock ();
1841 2794
1842 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2795 /* 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 2811 * doesn't hurt either as we only do this on time-jumps or
1859 * in the unlikely event of having been preempted here. 2812 * in the unlikely event of having been preempted here.
1860 */ 2813 */
1861 for (i = 4; --i; ) 2814 for (i = 4; --i; )
1862 { 2815 {
2816 ev_tstamp diff;
1863 rtmn_diff = ev_rt_now - mn_now; 2817 rtmn_diff = ev_rt_now - mn_now;
1864 2818
2819 diff = odiff - rtmn_diff;
2820
1865 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2821 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1866 return; /* all is well */ 2822 return; /* all is well */
1867 2823
1868 ev_rt_now = ev_time (); 2824 ev_rt_now = ev_time ();
1869 mn_now = get_clock (); 2825 mn_now = get_clock ();
1870 now_floor = mn_now; 2826 now_floor = mn_now;
1871 } 2827 }
1872 2828
2829 /* no timer adjustment, as the monotonic clock doesn't jump */
2830 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1873# if EV_PERIODIC_ENABLE 2831# if EV_PERIODIC_ENABLE
1874 periodics_reschedule (EV_A); 2832 periodics_reschedule (EV_A);
1875# endif 2833# endif
1876 /* no timer adjustment, as the monotonic clock doesn't jump */
1877 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1878 } 2834 }
1879 else 2835 else
1880#endif 2836#endif
1881 { 2837 {
1882 ev_rt_now = ev_time (); 2838 ev_rt_now = ev_time ();
1883 2839
1884 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2840 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1885 { 2841 {
2842 /* adjust timers. this is easy, as the offset is the same for all of them */
2843 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1886#if EV_PERIODIC_ENABLE 2844#if EV_PERIODIC_ENABLE
1887 periodics_reschedule (EV_A); 2845 periodics_reschedule (EV_A);
1888#endif 2846#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 } 2847 }
1897 2848
1898 mn_now = ev_rt_now; 2849 mn_now = ev_rt_now;
1899 } 2850 }
1900} 2851}
1901 2852
1902void 2853void
1903ev_ref (EV_P)
1904{
1905 ++activecnt;
1906}
1907
1908void
1909ev_unref (EV_P)
1910{
1911 --activecnt;
1912}
1913
1914void
1915ev_now_update (EV_P)
1916{
1917 time_update (EV_A_ 1e100);
1918}
1919
1920static int loop_done;
1921
1922void
1923ev_loop (EV_P_ int flags) 2854ev_run (EV_P_ int flags)
1924{ 2855{
2856#if EV_FEATURE_API
2857 ++loop_depth;
2858#endif
2859
2860 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2861
1925 loop_done = EVUNLOOP_CANCEL; 2862 loop_done = EVBREAK_CANCEL;
1926 2863
1927 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2864 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1928 2865
1929 do 2866 do
1930 { 2867 {
1931#if EV_VERIFY >= 2 2868#if EV_VERIFY >= 2
1932 ev_loop_verify (EV_A); 2869 ev_verify (EV_A);
1933#endif 2870#endif
1934 2871
1935#ifndef _WIN32 2872#ifndef _WIN32
1936 if (expect_false (curpid)) /* penalise the forking check even more */ 2873 if (expect_false (curpid)) /* penalise the forking check even more */
1937 if (expect_false (getpid () != curpid)) 2874 if (expect_false (getpid () != curpid))
… …
1945 /* we might have forked, so queue fork handlers */ 2882 /* we might have forked, so queue fork handlers */
1946 if (expect_false (postfork)) 2883 if (expect_false (postfork))
1947 if (forkcnt) 2884 if (forkcnt)
1948 { 2885 {
1949 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2886 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1950 call_pending (EV_A); 2887 EV_INVOKE_PENDING;
1951 } 2888 }
1952#endif 2889#endif
1953 2890
2891#if EV_PREPARE_ENABLE
1954 /* queue prepare watchers (and execute them) */ 2892 /* queue prepare watchers (and execute them) */
1955 if (expect_false (preparecnt)) 2893 if (expect_false (preparecnt))
1956 { 2894 {
1957 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2895 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1958 call_pending (EV_A); 2896 EV_INVOKE_PENDING;
1959 } 2897 }
2898#endif
1960 2899
1961 if (expect_false (!activecnt)) 2900 if (expect_false (loop_done))
1962 break; 2901 break;
1963 2902
1964 /* we might have forked, so reify kernel state if necessary */ 2903 /* we might have forked, so reify kernel state if necessary */
1965 if (expect_false (postfork)) 2904 if (expect_false (postfork))
1966 loop_fork (EV_A); 2905 loop_fork (EV_A);
… …
1971 /* calculate blocking time */ 2910 /* calculate blocking time */
1972 { 2911 {
1973 ev_tstamp waittime = 0.; 2912 ev_tstamp waittime = 0.;
1974 ev_tstamp sleeptime = 0.; 2913 ev_tstamp sleeptime = 0.;
1975 2914
2915 /* remember old timestamp for io_blocktime calculation */
2916 ev_tstamp prev_mn_now = mn_now;
2917
2918 /* update time to cancel out callback processing overhead */
2919 time_update (EV_A_ 1e100);
2920
2921 /* from now on, we want a pipe-wake-up */
2922 pipe_write_wanted = 1;
2923
2924 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2925
1976 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2926 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1977 { 2927 {
1978 /* update time to cancel out callback processing overhead */
1979 time_update (EV_A_ 1e100);
1980
1981 waittime = MAX_BLOCKTIME; 2928 waittime = MAX_BLOCKTIME;
1982 2929
1983 if (timercnt) 2930 if (timercnt)
1984 { 2931 {
1985 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2932 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1986 if (waittime > to) waittime = to; 2933 if (waittime > to) waittime = to;
1987 } 2934 }
1988 2935
1989#if EV_PERIODIC_ENABLE 2936#if EV_PERIODIC_ENABLE
1990 if (periodiccnt) 2937 if (periodiccnt)
1991 { 2938 {
1992 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2939 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1993 if (waittime > to) waittime = to; 2940 if (waittime > to) waittime = to;
1994 } 2941 }
1995#endif 2942#endif
1996 2943
2944 /* don't let timeouts decrease the waittime below timeout_blocktime */
1997 if (expect_false (waittime < timeout_blocktime)) 2945 if (expect_false (waittime < timeout_blocktime))
1998 waittime = timeout_blocktime; 2946 waittime = timeout_blocktime;
1999 2947
2000 sleeptime = waittime - backend_fudge; 2948 /* at this point, we NEED to wait, so we have to ensure */
2949 /* to pass a minimum nonzero value to the backend */
2950 if (expect_false (waittime < backend_mintime))
2951 waittime = backend_mintime;
2001 2952
2953 /* extra check because io_blocktime is commonly 0 */
2002 if (expect_true (sleeptime > io_blocktime)) 2954 if (expect_false (io_blocktime))
2003 sleeptime = io_blocktime;
2004
2005 if (sleeptime)
2006 { 2955 {
2956 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2957
2958 if (sleeptime > waittime - backend_mintime)
2959 sleeptime = waittime - backend_mintime;
2960
2961 if (expect_true (sleeptime > 0.))
2962 {
2007 ev_sleep (sleeptime); 2963 ev_sleep (sleeptime);
2008 waittime -= sleeptime; 2964 waittime -= sleeptime;
2965 }
2009 } 2966 }
2010 } 2967 }
2011 2968
2969#if EV_FEATURE_API
2012 ++loop_count; 2970 ++loop_count;
2971#endif
2972 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2013 backend_poll (EV_A_ waittime); 2973 backend_poll (EV_A_ waittime);
2974 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2975
2976 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2977
2978 if (pipe_write_skipped)
2979 {
2980 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2981 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2982 }
2983
2014 2984
2015 /* update ev_rt_now, do magic */ 2985 /* update ev_rt_now, do magic */
2016 time_update (EV_A_ waittime + sleeptime); 2986 time_update (EV_A_ waittime + sleeptime);
2017 } 2987 }
2018 2988
… …
2025#if EV_IDLE_ENABLE 2995#if EV_IDLE_ENABLE
2026 /* queue idle watchers unless other events are pending */ 2996 /* queue idle watchers unless other events are pending */
2027 idle_reify (EV_A); 2997 idle_reify (EV_A);
2028#endif 2998#endif
2029 2999
3000#if EV_CHECK_ENABLE
2030 /* queue check watchers, to be executed first */ 3001 /* queue check watchers, to be executed first */
2031 if (expect_false (checkcnt)) 3002 if (expect_false (checkcnt))
2032 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 3003 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
3004#endif
2033 3005
2034 call_pending (EV_A); 3006 EV_INVOKE_PENDING;
2035 } 3007 }
2036 while (expect_true ( 3008 while (expect_true (
2037 activecnt 3009 activecnt
2038 && !loop_done 3010 && !loop_done
2039 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3011 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2040 )); 3012 ));
2041 3013
2042 if (loop_done == EVUNLOOP_ONE) 3014 if (loop_done == EVBREAK_ONE)
2043 loop_done = EVUNLOOP_CANCEL; 3015 loop_done = EVBREAK_CANCEL;
3016
3017#if EV_FEATURE_API
3018 --loop_depth;
3019#endif
2044} 3020}
2045 3021
2046void 3022void
2047ev_unloop (EV_P_ int how) 3023ev_break (EV_P_ int how)
2048{ 3024{
2049 loop_done = how; 3025 loop_done = how;
2050} 3026}
2051 3027
3028void
3029ev_ref (EV_P)
3030{
3031 ++activecnt;
3032}
3033
3034void
3035ev_unref (EV_P)
3036{
3037 --activecnt;
3038}
3039
3040void
3041ev_now_update (EV_P)
3042{
3043 time_update (EV_A_ 1e100);
3044}
3045
3046void
3047ev_suspend (EV_P)
3048{
3049 ev_now_update (EV_A);
3050}
3051
3052void
3053ev_resume (EV_P)
3054{
3055 ev_tstamp mn_prev = mn_now;
3056
3057 ev_now_update (EV_A);
3058 timers_reschedule (EV_A_ mn_now - mn_prev);
3059#if EV_PERIODIC_ENABLE
3060 /* TODO: really do this? */
3061 periodics_reschedule (EV_A);
3062#endif
3063}
3064
2052/*****************************************************************************/ 3065/*****************************************************************************/
3066/* singly-linked list management, used when the expected list length is short */
2053 3067
2054void inline_size 3068inline_size void
2055wlist_add (WL *head, WL elem) 3069wlist_add (WL *head, WL elem)
2056{ 3070{
2057 elem->next = *head; 3071 elem->next = *head;
2058 *head = elem; 3072 *head = elem;
2059} 3073}
2060 3074
2061void inline_size 3075inline_size void
2062wlist_del (WL *head, WL elem) 3076wlist_del (WL *head, WL elem)
2063{ 3077{
2064 while (*head) 3078 while (*head)
2065 { 3079 {
2066 if (*head == elem) 3080 if (expect_true (*head == elem))
2067 { 3081 {
2068 *head = elem->next; 3082 *head = elem->next;
2069 return; 3083 break;
2070 } 3084 }
2071 3085
2072 head = &(*head)->next; 3086 head = &(*head)->next;
2073 } 3087 }
2074} 3088}
2075 3089
2076void inline_speed 3090/* internal, faster, version of ev_clear_pending */
3091inline_speed void
2077clear_pending (EV_P_ W w) 3092clear_pending (EV_P_ W w)
2078{ 3093{
2079 if (w->pending) 3094 if (w->pending)
2080 { 3095 {
2081 pendings [ABSPRI (w)][w->pending - 1].w = 0; 3096 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2082 w->pending = 0; 3097 w->pending = 0;
2083 } 3098 }
2084} 3099}
2085 3100
2086int 3101int
… …
2090 int pending = w_->pending; 3105 int pending = w_->pending;
2091 3106
2092 if (expect_true (pending)) 3107 if (expect_true (pending))
2093 { 3108 {
2094 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 3109 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
3110 p->w = (W)&pending_w;
2095 w_->pending = 0; 3111 w_->pending = 0;
2096 p->w = 0;
2097 return p->events; 3112 return p->events;
2098 } 3113 }
2099 else 3114 else
2100 return 0; 3115 return 0;
2101} 3116}
2102 3117
2103void inline_size 3118inline_size void
2104pri_adjust (EV_P_ W w) 3119pri_adjust (EV_P_ W w)
2105{ 3120{
2106 int pri = w->priority; 3121 int pri = ev_priority (w);
2107 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 3122 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2108 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 3123 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2109 w->priority = pri; 3124 ev_set_priority (w, pri);
2110} 3125}
2111 3126
2112void inline_speed 3127inline_speed void
2113ev_start (EV_P_ W w, int active) 3128ev_start (EV_P_ W w, int active)
2114{ 3129{
2115 pri_adjust (EV_A_ w); 3130 pri_adjust (EV_A_ w);
2116 w->active = active; 3131 w->active = active;
2117 ev_ref (EV_A); 3132 ev_ref (EV_A);
2118} 3133}
2119 3134
2120void inline_size 3135inline_size void
2121ev_stop (EV_P_ W w) 3136ev_stop (EV_P_ W w)
2122{ 3137{
2123 ev_unref (EV_A); 3138 ev_unref (EV_A);
2124 w->active = 0; 3139 w->active = 0;
2125} 3140}
… …
2132 int fd = w->fd; 3147 int fd = w->fd;
2133 3148
2134 if (expect_false (ev_is_active (w))) 3149 if (expect_false (ev_is_active (w)))
2135 return; 3150 return;
2136 3151
2137 assert (("ev_io_start called with negative fd", fd >= 0)); 3152 assert (("libev: ev_io_start called with negative fd", fd >= 0));
3153 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2138 3154
2139 EV_FREQUENT_CHECK; 3155 EV_FREQUENT_CHECK;
2140 3156
2141 ev_start (EV_A_ (W)w, 1); 3157 ev_start (EV_A_ (W)w, 1);
2142 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 3158 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2143 wlist_add (&anfds[fd].head, (WL)w); 3159 wlist_add (&anfds[fd].head, (WL)w);
2144 3160
2145 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 3161 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2146 w->events &= ~EV_IOFDSET; 3162 w->events &= ~EV__IOFDSET;
2147 3163
2148 EV_FREQUENT_CHECK; 3164 EV_FREQUENT_CHECK;
2149} 3165}
2150 3166
2151void noinline 3167void noinline
… …
2153{ 3169{
2154 clear_pending (EV_A_ (W)w); 3170 clear_pending (EV_A_ (W)w);
2155 if (expect_false (!ev_is_active (w))) 3171 if (expect_false (!ev_is_active (w)))
2156 return; 3172 return;
2157 3173
2158 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 3174 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2159 3175
2160 EV_FREQUENT_CHECK; 3176 EV_FREQUENT_CHECK;
2161 3177
2162 wlist_del (&anfds[w->fd].head, (WL)w); 3178 wlist_del (&anfds[w->fd].head, (WL)w);
2163 ev_stop (EV_A_ (W)w); 3179 ev_stop (EV_A_ (W)w);
2164 3180
2165 fd_change (EV_A_ w->fd, 1); 3181 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2166 3182
2167 EV_FREQUENT_CHECK; 3183 EV_FREQUENT_CHECK;
2168} 3184}
2169 3185
2170void noinline 3186void noinline
… …
2173 if (expect_false (ev_is_active (w))) 3189 if (expect_false (ev_is_active (w)))
2174 return; 3190 return;
2175 3191
2176 ev_at (w) += mn_now; 3192 ev_at (w) += mn_now;
2177 3193
2178 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 3194 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2179 3195
2180 EV_FREQUENT_CHECK; 3196 EV_FREQUENT_CHECK;
2181 3197
2182 ++timercnt; 3198 ++timercnt;
2183 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 3199 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2186 ANHE_at_cache (timers [ev_active (w)]); 3202 ANHE_at_cache (timers [ev_active (w)]);
2187 upheap (timers, ev_active (w)); 3203 upheap (timers, ev_active (w));
2188 3204
2189 EV_FREQUENT_CHECK; 3205 EV_FREQUENT_CHECK;
2190 3206
2191 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3207 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2192} 3208}
2193 3209
2194void noinline 3210void noinline
2195ev_timer_stop (EV_P_ ev_timer *w) 3211ev_timer_stop (EV_P_ ev_timer *w)
2196{ 3212{
… …
2201 EV_FREQUENT_CHECK; 3217 EV_FREQUENT_CHECK;
2202 3218
2203 { 3219 {
2204 int active = ev_active (w); 3220 int active = ev_active (w);
2205 3221
2206 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 3222 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2207 3223
2208 --timercnt; 3224 --timercnt;
2209 3225
2210 if (expect_true (active < timercnt + HEAP0)) 3226 if (expect_true (active < timercnt + HEAP0))
2211 { 3227 {
2212 timers [active] = timers [timercnt + HEAP0]; 3228 timers [active] = timers [timercnt + HEAP0];
2213 adjustheap (timers, timercnt, active); 3229 adjustheap (timers, timercnt, active);
2214 } 3230 }
2215 } 3231 }
2216 3232
2217 EV_FREQUENT_CHECK;
2218
2219 ev_at (w) -= mn_now; 3233 ev_at (w) -= mn_now;
2220 3234
2221 ev_stop (EV_A_ (W)w); 3235 ev_stop (EV_A_ (W)w);
3236
3237 EV_FREQUENT_CHECK;
2222} 3238}
2223 3239
2224void noinline 3240void noinline
2225ev_timer_again (EV_P_ ev_timer *w) 3241ev_timer_again (EV_P_ ev_timer *w)
2226{ 3242{
… …
2244 } 3260 }
2245 3261
2246 EV_FREQUENT_CHECK; 3262 EV_FREQUENT_CHECK;
2247} 3263}
2248 3264
3265ev_tstamp
3266ev_timer_remaining (EV_P_ ev_timer *w)
3267{
3268 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3269}
3270
2249#if EV_PERIODIC_ENABLE 3271#if EV_PERIODIC_ENABLE
2250void noinline 3272void noinline
2251ev_periodic_start (EV_P_ ev_periodic *w) 3273ev_periodic_start (EV_P_ ev_periodic *w)
2252{ 3274{
2253 if (expect_false (ev_is_active (w))) 3275 if (expect_false (ev_is_active (w)))
… …
2255 3277
2256 if (w->reschedule_cb) 3278 if (w->reschedule_cb)
2257 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3279 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2258 else if (w->interval) 3280 else if (w->interval)
2259 { 3281 {
2260 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 3282 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2261 /* this formula differs from the one in periodic_reify because we do not always round up */ 3283 periodic_recalc (EV_A_ w);
2262 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2263 } 3284 }
2264 else 3285 else
2265 ev_at (w) = w->offset; 3286 ev_at (w) = w->offset;
2266 3287
2267 EV_FREQUENT_CHECK; 3288 EV_FREQUENT_CHECK;
… …
2273 ANHE_at_cache (periodics [ev_active (w)]); 3294 ANHE_at_cache (periodics [ev_active (w)]);
2274 upheap (periodics, ev_active (w)); 3295 upheap (periodics, ev_active (w));
2275 3296
2276 EV_FREQUENT_CHECK; 3297 EV_FREQUENT_CHECK;
2277 3298
2278 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3299 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2279} 3300}
2280 3301
2281void noinline 3302void noinline
2282ev_periodic_stop (EV_P_ ev_periodic *w) 3303ev_periodic_stop (EV_P_ ev_periodic *w)
2283{ 3304{
… …
2288 EV_FREQUENT_CHECK; 3309 EV_FREQUENT_CHECK;
2289 3310
2290 { 3311 {
2291 int active = ev_active (w); 3312 int active = ev_active (w);
2292 3313
2293 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 3314 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2294 3315
2295 --periodiccnt; 3316 --periodiccnt;
2296 3317
2297 if (expect_true (active < periodiccnt + HEAP0)) 3318 if (expect_true (active < periodiccnt + HEAP0))
2298 { 3319 {
2299 periodics [active] = periodics [periodiccnt + HEAP0]; 3320 periodics [active] = periodics [periodiccnt + HEAP0];
2300 adjustheap (periodics, periodiccnt, active); 3321 adjustheap (periodics, periodiccnt, active);
2301 } 3322 }
2302 } 3323 }
2303 3324
2304 EV_FREQUENT_CHECK;
2305
2306 ev_stop (EV_A_ (W)w); 3325 ev_stop (EV_A_ (W)w);
3326
3327 EV_FREQUENT_CHECK;
2307} 3328}
2308 3329
2309void noinline 3330void noinline
2310ev_periodic_again (EV_P_ ev_periodic *w) 3331ev_periodic_again (EV_P_ ev_periodic *w)
2311{ 3332{
… …
2317 3338
2318#ifndef SA_RESTART 3339#ifndef SA_RESTART
2319# define SA_RESTART 0 3340# define SA_RESTART 0
2320#endif 3341#endif
2321 3342
3343#if EV_SIGNAL_ENABLE
3344
2322void noinline 3345void noinline
2323ev_signal_start (EV_P_ ev_signal *w) 3346ev_signal_start (EV_P_ ev_signal *w)
2324{ 3347{
2325#if EV_MULTIPLICITY
2326 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2327#endif
2328 if (expect_false (ev_is_active (w))) 3348 if (expect_false (ev_is_active (w)))
2329 return; 3349 return;
2330 3350
2331 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3351 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2332 3352
2333 evpipe_init (EV_A); 3353#if EV_MULTIPLICITY
3354 assert (("libev: a signal must not be attached to two different loops",
3355 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2334 3356
2335 EV_FREQUENT_CHECK; 3357 signals [w->signum - 1].loop = EV_A;
3358#endif
2336 3359
3360 EV_FREQUENT_CHECK;
3361
3362#if EV_USE_SIGNALFD
3363 if (sigfd == -2)
2337 { 3364 {
2338#ifndef _WIN32 3365 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2339 sigset_t full, prev; 3366 if (sigfd < 0 && errno == EINVAL)
2340 sigfillset (&full); 3367 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2341 sigprocmask (SIG_SETMASK, &full, &prev);
2342#endif
2343 3368
2344 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3369 if (sigfd >= 0)
3370 {
3371 fd_intern (sigfd); /* doing it twice will not hurt */
2345 3372
2346#ifndef _WIN32 3373 sigemptyset (&sigfd_set);
2347 sigprocmask (SIG_SETMASK, &prev, 0); 3374
2348#endif 3375 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3376 ev_set_priority (&sigfd_w, EV_MAXPRI);
3377 ev_io_start (EV_A_ &sigfd_w);
3378 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3379 }
2349 } 3380 }
3381
3382 if (sigfd >= 0)
3383 {
3384 /* TODO: check .head */
3385 sigaddset (&sigfd_set, w->signum);
3386 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3387
3388 signalfd (sigfd, &sigfd_set, 0);
3389 }
3390#endif
2350 3391
2351 ev_start (EV_A_ (W)w, 1); 3392 ev_start (EV_A_ (W)w, 1);
2352 wlist_add (&signals [w->signum - 1].head, (WL)w); 3393 wlist_add (&signals [w->signum - 1].head, (WL)w);
2353 3394
2354 if (!((WL)w)->next) 3395 if (!((WL)w)->next)
3396# if EV_USE_SIGNALFD
3397 if (sigfd < 0) /*TODO*/
3398# endif
2355 { 3399 {
2356#if _WIN32 3400# ifdef _WIN32
3401 evpipe_init (EV_A);
3402
2357 signal (w->signum, ev_sighandler); 3403 signal (w->signum, ev_sighandler);
2358#else 3404# else
2359 struct sigaction sa; 3405 struct sigaction sa;
3406
3407 evpipe_init (EV_A);
3408
2360 sa.sa_handler = ev_sighandler; 3409 sa.sa_handler = ev_sighandler;
2361 sigfillset (&sa.sa_mask); 3410 sigfillset (&sa.sa_mask);
2362 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3411 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2363 sigaction (w->signum, &sa, 0); 3412 sigaction (w->signum, &sa, 0);
3413
3414 if (origflags & EVFLAG_NOSIGMASK)
3415 {
3416 sigemptyset (&sa.sa_mask);
3417 sigaddset (&sa.sa_mask, w->signum);
3418 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3419 }
2364#endif 3420#endif
2365 } 3421 }
2366 3422
2367 EV_FREQUENT_CHECK; 3423 EV_FREQUENT_CHECK;
2368} 3424}
2369 3425
2370void noinline 3426void noinline
… …
2378 3434
2379 wlist_del (&signals [w->signum - 1].head, (WL)w); 3435 wlist_del (&signals [w->signum - 1].head, (WL)w);
2380 ev_stop (EV_A_ (W)w); 3436 ev_stop (EV_A_ (W)w);
2381 3437
2382 if (!signals [w->signum - 1].head) 3438 if (!signals [w->signum - 1].head)
3439 {
3440#if EV_MULTIPLICITY
3441 signals [w->signum - 1].loop = 0; /* unattach from signal */
3442#endif
3443#if EV_USE_SIGNALFD
3444 if (sigfd >= 0)
3445 {
3446 sigset_t ss;
3447
3448 sigemptyset (&ss);
3449 sigaddset (&ss, w->signum);
3450 sigdelset (&sigfd_set, w->signum);
3451
3452 signalfd (sigfd, &sigfd_set, 0);
3453 sigprocmask (SIG_UNBLOCK, &ss, 0);
3454 }
3455 else
3456#endif
2383 signal (w->signum, SIG_DFL); 3457 signal (w->signum, SIG_DFL);
3458 }
2384 3459
2385 EV_FREQUENT_CHECK; 3460 EV_FREQUENT_CHECK;
2386} 3461}
3462
3463#endif
3464
3465#if EV_CHILD_ENABLE
2387 3466
2388void 3467void
2389ev_child_start (EV_P_ ev_child *w) 3468ev_child_start (EV_P_ ev_child *w)
2390{ 3469{
2391#if EV_MULTIPLICITY 3470#if EV_MULTIPLICITY
2392 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3471 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2393#endif 3472#endif
2394 if (expect_false (ev_is_active (w))) 3473 if (expect_false (ev_is_active (w)))
2395 return; 3474 return;
2396 3475
2397 EV_FREQUENT_CHECK; 3476 EV_FREQUENT_CHECK;
2398 3477
2399 ev_start (EV_A_ (W)w, 1); 3478 ev_start (EV_A_ (W)w, 1);
2400 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3479 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2401 3480
2402 EV_FREQUENT_CHECK; 3481 EV_FREQUENT_CHECK;
2403} 3482}
2404 3483
2405void 3484void
… …
2409 if (expect_false (!ev_is_active (w))) 3488 if (expect_false (!ev_is_active (w)))
2410 return; 3489 return;
2411 3490
2412 EV_FREQUENT_CHECK; 3491 EV_FREQUENT_CHECK;
2413 3492
2414 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3493 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2415 ev_stop (EV_A_ (W)w); 3494 ev_stop (EV_A_ (W)w);
2416 3495
2417 EV_FREQUENT_CHECK; 3496 EV_FREQUENT_CHECK;
2418} 3497}
3498
3499#endif
2419 3500
2420#if EV_STAT_ENABLE 3501#if EV_STAT_ENABLE
2421 3502
2422# ifdef _WIN32 3503# ifdef _WIN32
2423# undef lstat 3504# undef lstat
2424# define lstat(a,b) _stati64 (a,b) 3505# define lstat(a,b) _stati64 (a,b)
2425# endif 3506# endif
2426 3507
2427#define DEF_STAT_INTERVAL 5.0074891 3508#define DEF_STAT_INTERVAL 5.0074891
3509#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2428#define MIN_STAT_INTERVAL 0.1074891 3510#define MIN_STAT_INTERVAL 0.1074891
2429 3511
2430static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3512static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2431 3513
2432#if EV_USE_INOTIFY 3514#if EV_USE_INOTIFY
2433# define EV_INOTIFY_BUFSIZE 8192 3515
3516/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3517# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2434 3518
2435static void noinline 3519static void noinline
2436infy_add (EV_P_ ev_stat *w) 3520infy_add (EV_P_ ev_stat *w)
2437{ 3521{
2438 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); 3522 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);
2439 3523
2440 if (w->wd < 0) 3524 if (w->wd >= 0)
3525 {
3526 struct statfs sfs;
3527
3528 /* now local changes will be tracked by inotify, but remote changes won't */
3529 /* unless the filesystem is known to be local, we therefore still poll */
3530 /* also do poll on <2.6.25, but with normal frequency */
3531
3532 if (!fs_2625)
3533 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3534 else if (!statfs (w->path, &sfs)
3535 && (sfs.f_type == 0x1373 /* devfs */
3536 || sfs.f_type == 0xEF53 /* ext2/3 */
3537 || sfs.f_type == 0x3153464a /* jfs */
3538 || sfs.f_type == 0x52654973 /* reiser3 */
3539 || sfs.f_type == 0x01021994 /* tempfs */
3540 || sfs.f_type == 0x58465342 /* xfs */))
3541 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3542 else
3543 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2441 { 3544 }
2442 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3545 else
3546 {
3547 /* can't use inotify, continue to stat */
3548 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2443 3549
2444 /* monitor some parent directory for speedup hints */ 3550 /* if path is not there, monitor some parent directory for speedup hints */
2445 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3551 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2446 /* but an efficiency issue only */ 3552 /* but an efficiency issue only */
2447 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3553 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2448 { 3554 {
2449 char path [4096]; 3555 char path [4096];
2450 strcpy (path, w->path); 3556 strcpy (path, w->path);
… …
2454 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3560 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2455 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3561 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2456 3562
2457 char *pend = strrchr (path, '/'); 3563 char *pend = strrchr (path, '/');
2458 3564
2459 if (!pend) 3565 if (!pend || pend == path)
2460 break; /* whoops, no '/', complain to your admin */ 3566 break;
2461 3567
2462 *pend = 0; 3568 *pend = 0;
2463 w->wd = inotify_add_watch (fs_fd, path, mask); 3569 w->wd = inotify_add_watch (fs_fd, path, mask);
2464 } 3570 }
2465 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3571 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2466 } 3572 }
2467 } 3573 }
2468 else
2469 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2470 3574
2471 if (w->wd >= 0) 3575 if (w->wd >= 0)
2472 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3576 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3577
3578 /* now re-arm timer, if required */
3579 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3580 ev_timer_again (EV_A_ &w->timer);
3581 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2473} 3582}
2474 3583
2475static void noinline 3584static void noinline
2476infy_del (EV_P_ ev_stat *w) 3585infy_del (EV_P_ ev_stat *w)
2477{ 3586{
… …
2480 3589
2481 if (wd < 0) 3590 if (wd < 0)
2482 return; 3591 return;
2483 3592
2484 w->wd = -2; 3593 w->wd = -2;
2485 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3594 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2486 wlist_del (&fs_hash [slot].head, (WL)w); 3595 wlist_del (&fs_hash [slot].head, (WL)w);
2487 3596
2488 /* remove this watcher, if others are watching it, they will rearm */ 3597 /* remove this watcher, if others are watching it, they will rearm */
2489 inotify_rm_watch (fs_fd, wd); 3598 inotify_rm_watch (fs_fd, wd);
2490} 3599}
2491 3600
2492static void noinline 3601static void noinline
2493infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3602infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2494{ 3603{
2495 if (slot < 0) 3604 if (slot < 0)
2496 /* overflow, need to check for all hahs slots */ 3605 /* overflow, need to check for all hash slots */
2497 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3606 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2498 infy_wd (EV_A_ slot, wd, ev); 3607 infy_wd (EV_A_ slot, wd, ev);
2499 else 3608 else
2500 { 3609 {
2501 WL w_; 3610 WL w_;
2502 3611
2503 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3612 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2504 { 3613 {
2505 ev_stat *w = (ev_stat *)w_; 3614 ev_stat *w = (ev_stat *)w_;
2506 w_ = w_->next; /* lets us remove this watcher and all before it */ 3615 w_ = w_->next; /* lets us remove this watcher and all before it */
2507 3616
2508 if (w->wd == wd || wd == -1) 3617 if (w->wd == wd || wd == -1)
2509 { 3618 {
2510 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3619 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2511 { 3620 {
3621 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2512 w->wd = -1; 3622 w->wd = -1;
2513 infy_add (EV_A_ w); /* re-add, no matter what */ 3623 infy_add (EV_A_ w); /* re-add, no matter what */
2514 } 3624 }
2515 3625
2516 stat_timer_cb (EV_A_ &w->timer, 0); 3626 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2521 3631
2522static void 3632static void
2523infy_cb (EV_P_ ev_io *w, int revents) 3633infy_cb (EV_P_ ev_io *w, int revents)
2524{ 3634{
2525 char buf [EV_INOTIFY_BUFSIZE]; 3635 char buf [EV_INOTIFY_BUFSIZE];
2526 struct inotify_event *ev = (struct inotify_event *)buf;
2527 int ofs; 3636 int ofs;
2528 int len = read (fs_fd, buf, sizeof (buf)); 3637 int len = read (fs_fd, buf, sizeof (buf));
2529 3638
2530 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3639 for (ofs = 0; ofs < len; )
3640 {
3641 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2531 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3642 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3643 ofs += sizeof (struct inotify_event) + ev->len;
3644 }
2532} 3645}
2533 3646
2534void inline_size 3647inline_size void ecb_cold
3648ev_check_2625 (EV_P)
3649{
3650 /* kernels < 2.6.25 are borked
3651 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3652 */
3653 if (ev_linux_version () < 0x020619)
3654 return;
3655
3656 fs_2625 = 1;
3657}
3658
3659inline_size int
3660infy_newfd (void)
3661{
3662#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3663 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3664 if (fd >= 0)
3665 return fd;
3666#endif
3667 return inotify_init ();
3668}
3669
3670inline_size void
2535infy_init (EV_P) 3671infy_init (EV_P)
2536{ 3672{
2537 if (fs_fd != -2) 3673 if (fs_fd != -2)
2538 return; 3674 return;
2539 3675
3676 fs_fd = -1;
3677
3678 ev_check_2625 (EV_A);
3679
2540 fs_fd = inotify_init (); 3680 fs_fd = infy_newfd ();
2541 3681
2542 if (fs_fd >= 0) 3682 if (fs_fd >= 0)
2543 { 3683 {
3684 fd_intern (fs_fd);
2544 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3685 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2545 ev_set_priority (&fs_w, EV_MAXPRI); 3686 ev_set_priority (&fs_w, EV_MAXPRI);
2546 ev_io_start (EV_A_ &fs_w); 3687 ev_io_start (EV_A_ &fs_w);
3688 ev_unref (EV_A);
2547 } 3689 }
2548} 3690}
2549 3691
2550void inline_size 3692inline_size void
2551infy_fork (EV_P) 3693infy_fork (EV_P)
2552{ 3694{
2553 int slot; 3695 int slot;
2554 3696
2555 if (fs_fd < 0) 3697 if (fs_fd < 0)
2556 return; 3698 return;
2557 3699
3700 ev_ref (EV_A);
3701 ev_io_stop (EV_A_ &fs_w);
2558 close (fs_fd); 3702 close (fs_fd);
2559 fs_fd = inotify_init (); 3703 fs_fd = infy_newfd ();
2560 3704
3705 if (fs_fd >= 0)
3706 {
3707 fd_intern (fs_fd);
3708 ev_io_set (&fs_w, fs_fd, EV_READ);
3709 ev_io_start (EV_A_ &fs_w);
3710 ev_unref (EV_A);
3711 }
3712
2561 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3713 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2562 { 3714 {
2563 WL w_ = fs_hash [slot].head; 3715 WL w_ = fs_hash [slot].head;
2564 fs_hash [slot].head = 0; 3716 fs_hash [slot].head = 0;
2565 3717
2566 while (w_) 3718 while (w_)
… …
2571 w->wd = -1; 3723 w->wd = -1;
2572 3724
2573 if (fs_fd >= 0) 3725 if (fs_fd >= 0)
2574 infy_add (EV_A_ w); /* re-add, no matter what */ 3726 infy_add (EV_A_ w); /* re-add, no matter what */
2575 else 3727 else
3728 {
3729 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3730 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2576 ev_timer_start (EV_A_ &w->timer); 3731 ev_timer_again (EV_A_ &w->timer);
3732 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3733 }
2577 } 3734 }
2578
2579 } 3735 }
2580} 3736}
2581 3737
2582#endif 3738#endif
2583 3739
… …
2599static void noinline 3755static void noinline
2600stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3756stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2601{ 3757{
2602 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3758 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2603 3759
2604 /* we copy this here each the time so that */ 3760 ev_statdata prev = w->attr;
2605 /* prev has the old value when the callback gets invoked */
2606 w->prev = w->attr;
2607 ev_stat_stat (EV_A_ w); 3761 ev_stat_stat (EV_A_ w);
2608 3762
2609 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3763 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2610 if ( 3764 if (
2611 w->prev.st_dev != w->attr.st_dev 3765 prev.st_dev != w->attr.st_dev
2612 || w->prev.st_ino != w->attr.st_ino 3766 || prev.st_ino != w->attr.st_ino
2613 || w->prev.st_mode != w->attr.st_mode 3767 || prev.st_mode != w->attr.st_mode
2614 || w->prev.st_nlink != w->attr.st_nlink 3768 || prev.st_nlink != w->attr.st_nlink
2615 || w->prev.st_uid != w->attr.st_uid 3769 || prev.st_uid != w->attr.st_uid
2616 || w->prev.st_gid != w->attr.st_gid 3770 || prev.st_gid != w->attr.st_gid
2617 || w->prev.st_rdev != w->attr.st_rdev 3771 || prev.st_rdev != w->attr.st_rdev
2618 || w->prev.st_size != w->attr.st_size 3772 || prev.st_size != w->attr.st_size
2619 || w->prev.st_atime != w->attr.st_atime 3773 || prev.st_atime != w->attr.st_atime
2620 || w->prev.st_mtime != w->attr.st_mtime 3774 || prev.st_mtime != w->attr.st_mtime
2621 || w->prev.st_ctime != w->attr.st_ctime 3775 || prev.st_ctime != w->attr.st_ctime
2622 ) { 3776 ) {
3777 /* we only update w->prev on actual differences */
3778 /* in case we test more often than invoke the callback, */
3779 /* to ensure that prev is always different to attr */
3780 w->prev = prev;
3781
2623 #if EV_USE_INOTIFY 3782 #if EV_USE_INOTIFY
3783 if (fs_fd >= 0)
3784 {
2624 infy_del (EV_A_ w); 3785 infy_del (EV_A_ w);
2625 infy_add (EV_A_ w); 3786 infy_add (EV_A_ w);
2626 ev_stat_stat (EV_A_ w); /* avoid race... */ 3787 ev_stat_stat (EV_A_ w); /* avoid race... */
3788 }
2627 #endif 3789 #endif
2628 3790
2629 ev_feed_event (EV_A_ w, EV_STAT); 3791 ev_feed_event (EV_A_ w, EV_STAT);
2630 } 3792 }
2631} 3793}
… …
2634ev_stat_start (EV_P_ ev_stat *w) 3796ev_stat_start (EV_P_ ev_stat *w)
2635{ 3797{
2636 if (expect_false (ev_is_active (w))) 3798 if (expect_false (ev_is_active (w)))
2637 return; 3799 return;
2638 3800
2639 /* since we use memcmp, we need to clear any padding data etc. */
2640 memset (&w->prev, 0, sizeof (ev_statdata));
2641 memset (&w->attr, 0, sizeof (ev_statdata));
2642
2643 ev_stat_stat (EV_A_ w); 3801 ev_stat_stat (EV_A_ w);
2644 3802
3803 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2645 if (w->interval < MIN_STAT_INTERVAL) 3804 w->interval = MIN_STAT_INTERVAL;
2646 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2647 3805
2648 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3806 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2649 ev_set_priority (&w->timer, ev_priority (w)); 3807 ev_set_priority (&w->timer, ev_priority (w));
2650 3808
2651#if EV_USE_INOTIFY 3809#if EV_USE_INOTIFY
2652 infy_init (EV_A); 3810 infy_init (EV_A);
2653 3811
2654 if (fs_fd >= 0) 3812 if (fs_fd >= 0)
2655 infy_add (EV_A_ w); 3813 infy_add (EV_A_ w);
2656 else 3814 else
2657#endif 3815#endif
3816 {
2658 ev_timer_start (EV_A_ &w->timer); 3817 ev_timer_again (EV_A_ &w->timer);
3818 ev_unref (EV_A);
3819 }
2659 3820
2660 ev_start (EV_A_ (W)w, 1); 3821 ev_start (EV_A_ (W)w, 1);
2661 3822
2662 EV_FREQUENT_CHECK; 3823 EV_FREQUENT_CHECK;
2663} 3824}
… …
2672 EV_FREQUENT_CHECK; 3833 EV_FREQUENT_CHECK;
2673 3834
2674#if EV_USE_INOTIFY 3835#if EV_USE_INOTIFY
2675 infy_del (EV_A_ w); 3836 infy_del (EV_A_ w);
2676#endif 3837#endif
3838
3839 if (ev_is_active (&w->timer))
3840 {
3841 ev_ref (EV_A);
2677 ev_timer_stop (EV_A_ &w->timer); 3842 ev_timer_stop (EV_A_ &w->timer);
3843 }
2678 3844
2679 ev_stop (EV_A_ (W)w); 3845 ev_stop (EV_A_ (W)w);
2680 3846
2681 EV_FREQUENT_CHECK; 3847 EV_FREQUENT_CHECK;
2682} 3848}
… …
2727 3893
2728 EV_FREQUENT_CHECK; 3894 EV_FREQUENT_CHECK;
2729} 3895}
2730#endif 3896#endif
2731 3897
3898#if EV_PREPARE_ENABLE
2732void 3899void
2733ev_prepare_start (EV_P_ ev_prepare *w) 3900ev_prepare_start (EV_P_ ev_prepare *w)
2734{ 3901{
2735 if (expect_false (ev_is_active (w))) 3902 if (expect_false (ev_is_active (w)))
2736 return; 3903 return;
… …
2762 3929
2763 ev_stop (EV_A_ (W)w); 3930 ev_stop (EV_A_ (W)w);
2764 3931
2765 EV_FREQUENT_CHECK; 3932 EV_FREQUENT_CHECK;
2766} 3933}
3934#endif
2767 3935
3936#if EV_CHECK_ENABLE
2768void 3937void
2769ev_check_start (EV_P_ ev_check *w) 3938ev_check_start (EV_P_ ev_check *w)
2770{ 3939{
2771 if (expect_false (ev_is_active (w))) 3940 if (expect_false (ev_is_active (w)))
2772 return; 3941 return;
… …
2798 3967
2799 ev_stop (EV_A_ (W)w); 3968 ev_stop (EV_A_ (W)w);
2800 3969
2801 EV_FREQUENT_CHECK; 3970 EV_FREQUENT_CHECK;
2802} 3971}
3972#endif
2803 3973
2804#if EV_EMBED_ENABLE 3974#if EV_EMBED_ENABLE
2805void noinline 3975void noinline
2806ev_embed_sweep (EV_P_ ev_embed *w) 3976ev_embed_sweep (EV_P_ ev_embed *w)
2807{ 3977{
2808 ev_loop (w->other, EVLOOP_NONBLOCK); 3978 ev_run (w->other, EVRUN_NOWAIT);
2809} 3979}
2810 3980
2811static void 3981static void
2812embed_io_cb (EV_P_ ev_io *io, int revents) 3982embed_io_cb (EV_P_ ev_io *io, int revents)
2813{ 3983{
2814 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3984 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2815 3985
2816 if (ev_cb (w)) 3986 if (ev_cb (w))
2817 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3987 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2818 else 3988 else
2819 ev_loop (w->other, EVLOOP_NONBLOCK); 3989 ev_run (w->other, EVRUN_NOWAIT);
2820} 3990}
2821 3991
2822static void 3992static void
2823embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3993embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2824{ 3994{
2825 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3995 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2826 3996
2827 { 3997 {
2828 struct ev_loop *loop = w->other; 3998 EV_P = w->other;
2829 3999
2830 while (fdchangecnt) 4000 while (fdchangecnt)
2831 { 4001 {
2832 fd_reify (EV_A); 4002 fd_reify (EV_A);
2833 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4003 ev_run (EV_A_ EVRUN_NOWAIT);
2834 } 4004 }
2835 } 4005 }
2836} 4006}
2837 4007
2838static void 4008static void
2839embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 4009embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2840{ 4010{
2841 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 4011 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2842 4012
4013 ev_embed_stop (EV_A_ w);
4014
2843 { 4015 {
2844 struct ev_loop *loop = w->other; 4016 EV_P = w->other;
2845 4017
2846 ev_loop_fork (EV_A); 4018 ev_loop_fork (EV_A);
4019 ev_run (EV_A_ EVRUN_NOWAIT);
2847 } 4020 }
4021
4022 ev_embed_start (EV_A_ w);
2848} 4023}
2849 4024
2850#if 0 4025#if 0
2851static void 4026static void
2852embed_idle_cb (EV_P_ ev_idle *idle, int revents) 4027embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2860{ 4035{
2861 if (expect_false (ev_is_active (w))) 4036 if (expect_false (ev_is_active (w)))
2862 return; 4037 return;
2863 4038
2864 { 4039 {
2865 struct ev_loop *loop = w->other; 4040 EV_P = w->other;
2866 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 4041 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2867 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 4042 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2868 } 4043 }
2869 4044
2870 EV_FREQUENT_CHECK; 4045 EV_FREQUENT_CHECK;
2871 4046
… …
2897 4072
2898 ev_io_stop (EV_A_ &w->io); 4073 ev_io_stop (EV_A_ &w->io);
2899 ev_prepare_stop (EV_A_ &w->prepare); 4074 ev_prepare_stop (EV_A_ &w->prepare);
2900 ev_fork_stop (EV_A_ &w->fork); 4075 ev_fork_stop (EV_A_ &w->fork);
2901 4076
4077 ev_stop (EV_A_ (W)w);
4078
2902 EV_FREQUENT_CHECK; 4079 EV_FREQUENT_CHECK;
2903} 4080}
2904#endif 4081#endif
2905 4082
2906#if EV_FORK_ENABLE 4083#if EV_FORK_ENABLE
… …
2939 4116
2940 EV_FREQUENT_CHECK; 4117 EV_FREQUENT_CHECK;
2941} 4118}
2942#endif 4119#endif
2943 4120
4121#if EV_CLEANUP_ENABLE
4122void
4123ev_cleanup_start (EV_P_ ev_cleanup *w)
4124{
4125 if (expect_false (ev_is_active (w)))
4126 return;
4127
4128 EV_FREQUENT_CHECK;
4129
4130 ev_start (EV_A_ (W)w, ++cleanupcnt);
4131 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4132 cleanups [cleanupcnt - 1] = w;
4133
4134 /* cleanup watchers should never keep a refcount on the loop */
4135 ev_unref (EV_A);
4136 EV_FREQUENT_CHECK;
4137}
4138
4139void
4140ev_cleanup_stop (EV_P_ ev_cleanup *w)
4141{
4142 clear_pending (EV_A_ (W)w);
4143 if (expect_false (!ev_is_active (w)))
4144 return;
4145
4146 EV_FREQUENT_CHECK;
4147 ev_ref (EV_A);
4148
4149 {
4150 int active = ev_active (w);
4151
4152 cleanups [active - 1] = cleanups [--cleanupcnt];
4153 ev_active (cleanups [active - 1]) = active;
4154 }
4155
4156 ev_stop (EV_A_ (W)w);
4157
4158 EV_FREQUENT_CHECK;
4159}
4160#endif
4161
2944#if EV_ASYNC_ENABLE 4162#if EV_ASYNC_ENABLE
2945void 4163void
2946ev_async_start (EV_P_ ev_async *w) 4164ev_async_start (EV_P_ ev_async *w)
2947{ 4165{
2948 if (expect_false (ev_is_active (w))) 4166 if (expect_false (ev_is_active (w)))
2949 return; 4167 return;
2950 4168
4169 w->sent = 0;
4170
2951 evpipe_init (EV_A); 4171 evpipe_init (EV_A);
2952 4172
2953 EV_FREQUENT_CHECK; 4173 EV_FREQUENT_CHECK;
2954 4174
2955 ev_start (EV_A_ (W)w, ++asynccnt); 4175 ev_start (EV_A_ (W)w, ++asynccnt);
… …
2982 4202
2983void 4203void
2984ev_async_send (EV_P_ ev_async *w) 4204ev_async_send (EV_P_ ev_async *w)
2985{ 4205{
2986 w->sent = 1; 4206 w->sent = 1;
2987 evpipe_write (EV_A_ &gotasync); 4207 evpipe_write (EV_A_ &async_pending);
2988} 4208}
2989#endif 4209#endif
2990 4210
2991/*****************************************************************************/ 4211/*****************************************************************************/
2992 4212
… …
3012} 4232}
3013 4233
3014static void 4234static void
3015once_cb_io (EV_P_ ev_io *w, int revents) 4235once_cb_io (EV_P_ ev_io *w, int revents)
3016{ 4236{
3017 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 4237 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
4238
4239 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
3018} 4240}
3019 4241
3020static void 4242static void
3021once_cb_to (EV_P_ ev_timer *w, int revents) 4243once_cb_to (EV_P_ ev_timer *w, int revents)
3022{ 4244{
3023 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 4245 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
4246
4247 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3024} 4248}
3025 4249
3026void 4250void
3027ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4251ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
3028{ 4252{
3029 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4253 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3030 4254
3031 if (expect_false (!once)) 4255 if (expect_false (!once))
3032 { 4256 {
3033 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4257 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3034 return; 4258 return;
3035 } 4259 }
3036 4260
3037 once->cb = cb; 4261 once->cb = cb;
3038 once->arg = arg; 4262 once->arg = arg;
… …
3050 ev_timer_set (&once->to, timeout, 0.); 4274 ev_timer_set (&once->to, timeout, 0.);
3051 ev_timer_start (EV_A_ &once->to); 4275 ev_timer_start (EV_A_ &once->to);
3052 } 4276 }
3053} 4277}
3054 4278
4279/*****************************************************************************/
4280
4281#if EV_WALK_ENABLE
4282void ecb_cold
4283ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
4284{
4285 int i, j;
4286 ev_watcher_list *wl, *wn;
4287
4288 if (types & (EV_IO | EV_EMBED))
4289 for (i = 0; i < anfdmax; ++i)
4290 for (wl = anfds [i].head; wl; )
4291 {
4292 wn = wl->next;
4293
4294#if EV_EMBED_ENABLE
4295 if (ev_cb ((ev_io *)wl) == embed_io_cb)
4296 {
4297 if (types & EV_EMBED)
4298 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
4299 }
4300 else
4301#endif
4302#if EV_USE_INOTIFY
4303 if (ev_cb ((ev_io *)wl) == infy_cb)
4304 ;
4305 else
4306#endif
4307 if ((ev_io *)wl != &pipe_w)
4308 if (types & EV_IO)
4309 cb (EV_A_ EV_IO, wl);
4310
4311 wl = wn;
4312 }
4313
4314 if (types & (EV_TIMER | EV_STAT))
4315 for (i = timercnt + HEAP0; i-- > HEAP0; )
4316#if EV_STAT_ENABLE
4317 /*TODO: timer is not always active*/
4318 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
4319 {
4320 if (types & EV_STAT)
4321 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
4322 }
4323 else
4324#endif
4325 if (types & EV_TIMER)
4326 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
4327
4328#if EV_PERIODIC_ENABLE
4329 if (types & EV_PERIODIC)
4330 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4331 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4332#endif
4333
4334#if EV_IDLE_ENABLE
4335 if (types & EV_IDLE)
4336 for (j = NUMPRI; j--; )
4337 for (i = idlecnt [j]; i--; )
4338 cb (EV_A_ EV_IDLE, idles [j][i]);
4339#endif
4340
4341#if EV_FORK_ENABLE
4342 if (types & EV_FORK)
4343 for (i = forkcnt; i--; )
4344 if (ev_cb (forks [i]) != embed_fork_cb)
4345 cb (EV_A_ EV_FORK, forks [i]);
4346#endif
4347
4348#if EV_ASYNC_ENABLE
4349 if (types & EV_ASYNC)
4350 for (i = asynccnt; i--; )
4351 cb (EV_A_ EV_ASYNC, asyncs [i]);
4352#endif
4353
4354#if EV_PREPARE_ENABLE
4355 if (types & EV_PREPARE)
4356 for (i = preparecnt; i--; )
4357# if EV_EMBED_ENABLE
4358 if (ev_cb (prepares [i]) != embed_prepare_cb)
4359# endif
4360 cb (EV_A_ EV_PREPARE, prepares [i]);
4361#endif
4362
4363#if EV_CHECK_ENABLE
4364 if (types & EV_CHECK)
4365 for (i = checkcnt; i--; )
4366 cb (EV_A_ EV_CHECK, checks [i]);
4367#endif
4368
4369#if EV_SIGNAL_ENABLE
4370 if (types & EV_SIGNAL)
4371 for (i = 0; i < EV_NSIG - 1; ++i)
4372 for (wl = signals [i].head; wl; )
4373 {
4374 wn = wl->next;
4375 cb (EV_A_ EV_SIGNAL, wl);
4376 wl = wn;
4377 }
4378#endif
4379
4380#if EV_CHILD_ENABLE
4381 if (types & EV_CHILD)
4382 for (i = (EV_PID_HASHSIZE); i--; )
4383 for (wl = childs [i]; wl; )
4384 {
4385 wn = wl->next;
4386 cb (EV_A_ EV_CHILD, wl);
4387 wl = wn;
4388 }
4389#endif
4390/* EV_STAT 0x00001000 /* stat data changed */
4391/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4392}
4393#endif
4394
3055#if EV_MULTIPLICITY 4395#if EV_MULTIPLICITY
3056 #include "ev_wrap.h" 4396 #include "ev_wrap.h"
3057#endif 4397#endif
3058 4398
3059#ifdef __cplusplus 4399EV_CPP(})
3060}
3061#endif
3062 4400

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