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Comparing libev/ev.c (file contents):
Revision 1.266 by root, Fri Oct 24 08:15:33 2008 UTC vs.
Revision 1.384 by root, Wed Jul 20 00:58:45 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
291# include <sys/utsname.h> 397# include <sys/statfs.h>
292# include <sys/inotify.h> 398# include <sys/inotify.h>
293/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
294# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
295# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
296# define EV_USE_INOTIFY 0 402# define EV_USE_INOTIFY 0
… …
302#endif 408#endif
303 409
304#if EV_USE_EVENTFD 410#if EV_USE_EVENTFD
305/* 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 */
306# include <stdint.h> 412# include <stdint.h>
307# ifdef __cplusplus 413# ifndef EFD_NONBLOCK
308extern "C" { 414# define EFD_NONBLOCK O_NONBLOCK
309# endif 415# endif
310int eventfd (unsigned int initval, int flags); 416# ifndef EFD_CLOEXEC
311# ifdef __cplusplus 417# ifdef O_CLOEXEC
312} 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
313# 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};
314#endif 446#endif
315 447
316/**/ 448/**/
317 449
318#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
319# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
320#else 452#else
321# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
322#endif 454#endif
323 455
324/* 456/*
325 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
326 * It is added to ev_rt_now when scheduling periodics
327 * to ensure progress, time-wise, even when rounding
328 * errors are against us.
329 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
330 * Better solutions welcome.
331 */ 459 */
332#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 */
333 462
334#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) */
335#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) */
336/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
337 465
338#if __GNUC__ >= 4 466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
339# define expect(expr,value) __builtin_expect ((expr),(value)) 467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
340# define noinline __attribute__ ((noinline)) 468
469/* the following are taken from libecb */
470/* ecb.h start */
471
472/* many compilers define _GNUC_ to some versions but then only implement
473 * what their idiot authors think are the "more important" extensions,
474 * causing enourmous grief in return for some better fake benchmark numbers.
475 * or so.
476 * we try to detect these and simply assume they are not gcc - if they have
477 * an issue with that they should have done it right in the first place.
478 */
479#ifndef ECB_GCC_VERSION
480 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
481 #define ECB_GCC_VERSION(major,minor) 0
482 #else
483 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
484 #endif
485#endif
486
487#if __cplusplus
488 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__
491#elif ECB_C99
492 #define ecb_inline static inline
341#else 493#else
342# define expect(expr,value) (expr) 494 #define ecb_inline static
343# define noinline
344# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
345# define inline
346# endif 495#endif
496
497#ifndef ECB_MEMORY_FENCE
498 #if ECB_GCC_VERSION(2,5)
499 #if __x86
500 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
501 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
502 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE /* better be safe than sorry */
503 #elif __amd64
504 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
505 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
506 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence")
507 #endif
347#endif 508 #endif
509#endif
348 510
511#ifndef ECB_MEMORY_FENCE
512 #if ECB_GCC_VERSION(4,4)
513 #define ECB_MEMORY_FENCE __sync_synchronize ()
514 #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); })
515 #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); })
516 #elif _MSC_VER >= 1400
517 #define ECB_MEMORY_FENCE do { } while (0)
518 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
519 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
520 #elif defined(_WIN32) && defined(MemoryBarrier)
521 #define ECB_MEMORY_FENCE MemoryBarrier ()
522 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
523 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
524 #endif
525#endif
526
527#ifndef ECB_MEMORY_FENCE
528 #include <pthread.h>
529
530 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
531 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
532 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
533 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
534#endif
535
536#if ECB_GCC_VERSION(3,1)
537 #define ecb_attribute(attrlist) __attribute__(attrlist)
538 #define ecb_is_constant(expr) __builtin_constant_p (expr)
539 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
540 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
541#else
542 #define ecb_attribute(attrlist)
543 #define ecb_is_constant(expr) 0
544 #define ecb_expect(expr,value) (expr)
545 #define ecb_prefetch(addr,rw,locality)
546#endif
547
548#define ecb_noinline ecb_attribute ((__noinline__))
549#define ecb_noreturn ecb_attribute ((__noreturn__))
550#define ecb_unused ecb_attribute ((__unused__))
551#define ecb_const ecb_attribute ((__const__))
552#define ecb_pure ecb_attribute ((__pure__))
553
554#if ECB_GCC_VERSION(4,3)
555 #define ecb_artificial ecb_attribute ((__artificial__))
556 #define ecb_hot ecb_attribute ((__hot__))
557 #define ecb_cold ecb_attribute ((__cold__))
558#else
559 #define ecb_artificial
560 #define ecb_hot
561 #define ecb_cold
562#endif
563
564/* put around conditional expressions if you are very sure that the */
565/* expression is mostly true or mostly false. note that these return */
566/* booleans, not the expression. */
349#define expect_false(expr) expect ((expr) != 0, 0) 567#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
350#define expect_true(expr) expect ((expr) != 0, 1) 568#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
569/* ecb.h end */
570
571#define expect_false(cond) ecb_expect_false (cond)
572#define expect_true(cond) ecb_expect_true (cond)
573#define noinline ecb_noinline
574
351#define inline_size static inline 575#define inline_size ecb_inline
352 576
353#if EV_MINIMAL 577#if EV_FEATURE_CODE
578# define inline_speed ecb_inline
579#else
354# define inline_speed static noinline 580# define inline_speed static noinline
581#endif
582
583#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
584
585#if EV_MINPRI == EV_MAXPRI
586# define ABSPRI(w) (((W)w), 0)
355#else 587#else
356# define inline_speed static inline
357#endif
358
359#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
360#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 588# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
589#endif
361 590
362#define EMPTY /* required for microsofts broken pseudo-c compiler */ 591#define EMPTY /* required for microsofts broken pseudo-c compiler */
363#define EMPTY2(a,b) /* used to suppress some warnings */ 592#define EMPTY2(a,b) /* used to suppress some warnings */
364 593
365typedef ev_watcher *W; 594typedef ev_watcher *W;
… …
367typedef ev_watcher_time *WT; 596typedef ev_watcher_time *WT;
368 597
369#define ev_active(w) ((W)(w))->active 598#define ev_active(w) ((W)(w))->active
370#define ev_at(w) ((WT)(w))->at 599#define ev_at(w) ((WT)(w))->at
371 600
601#if EV_USE_REALTIME
602/* sig_atomic_t is used to avoid per-thread variables or locking but still */
603/* giving it a reasonably high chance of working on typical architectures */
604static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
605#endif
606
372#if EV_USE_MONOTONIC 607#if EV_USE_MONOTONIC
373/* sig_atomic_t is used to avoid per-thread variables or locking but still */
374/* giving it a reasonably high chance of working on typical architetcures */
375static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 608static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
609#endif
610
611#ifndef EV_FD_TO_WIN32_HANDLE
612# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
613#endif
614#ifndef EV_WIN32_HANDLE_TO_FD
615# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
616#endif
617#ifndef EV_WIN32_CLOSE_FD
618# define EV_WIN32_CLOSE_FD(fd) close (fd)
376#endif 619#endif
377 620
378#ifdef _WIN32 621#ifdef _WIN32
379# include "ev_win32.c" 622# include "ev_win32.c"
380#endif 623#endif
381 624
382/*****************************************************************************/ 625/*****************************************************************************/
383 626
627/* define a suitable floor function (only used by periodics atm) */
628
629#if EV_USE_FLOOR
630# include <math.h>
631# define ev_floor(v) floor (v)
632#else
633
634#include <float.h>
635
636/* a floor() replacement function, should be independent of ev_tstamp type */
637static ev_tstamp noinline
638ev_floor (ev_tstamp v)
639{
640 /* the choice of shift factor is not terribly important */
641#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
642 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
643#else
644 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
645#endif
646
647 /* argument too large for an unsigned long? */
648 if (expect_false (v >= shift))
649 {
650 ev_tstamp f;
651
652 if (v == v - 1.)
653 return v; /* very large number */
654
655 f = shift * ev_floor (v * (1. / shift));
656 return f + ev_floor (v - f);
657 }
658
659 /* special treatment for negative args? */
660 if (expect_false (v < 0.))
661 {
662 ev_tstamp f = -ev_floor (-v);
663
664 return f - (f == v ? 0 : 1);
665 }
666
667 /* fits into an unsigned long */
668 return (unsigned long)v;
669}
670
671#endif
672
673/*****************************************************************************/
674
675#ifdef __linux
676# include <sys/utsname.h>
677#endif
678
679static unsigned int noinline ecb_cold
680ev_linux_version (void)
681{
682#ifdef __linux
683 unsigned int v = 0;
684 struct utsname buf;
685 int i;
686 char *p = buf.release;
687
688 if (uname (&buf))
689 return 0;
690
691 for (i = 3+1; --i; )
692 {
693 unsigned int c = 0;
694
695 for (;;)
696 {
697 if (*p >= '0' && *p <= '9')
698 c = c * 10 + *p++ - '0';
699 else
700 {
701 p += *p == '.';
702 break;
703 }
704 }
705
706 v = (v << 8) | c;
707 }
708
709 return v;
710#else
711 return 0;
712#endif
713}
714
715/*****************************************************************************/
716
717#if EV_AVOID_STDIO
718static void noinline ecb_cold
719ev_printerr (const char *msg)
720{
721 write (STDERR_FILENO, msg, strlen (msg));
722}
723#endif
724
384static void (*syserr_cb)(const char *msg); 725static void (*syserr_cb)(const char *msg);
385 726
386void 727void ecb_cold
387ev_set_syserr_cb (void (*cb)(const char *msg)) 728ev_set_syserr_cb (void (*cb)(const char *msg))
388{ 729{
389 syserr_cb = cb; 730 syserr_cb = cb;
390} 731}
391 732
392static void noinline 733static void noinline ecb_cold
393syserr (const char *msg) 734ev_syserr (const char *msg)
394{ 735{
395 if (!msg) 736 if (!msg)
396 msg = "(libev) system error"; 737 msg = "(libev) system error";
397 738
398 if (syserr_cb) 739 if (syserr_cb)
399 syserr_cb (msg); 740 syserr_cb (msg);
400 else 741 else
401 { 742 {
743#if EV_AVOID_STDIO
744 ev_printerr (msg);
745 ev_printerr (": ");
746 ev_printerr (strerror (errno));
747 ev_printerr ("\n");
748#else
402 perror (msg); 749 perror (msg);
750#endif
403 abort (); 751 abort ();
404 } 752 }
405} 753}
406 754
407static void * 755static void *
408ev_realloc_emul (void *ptr, long size) 756ev_realloc_emul (void *ptr, long size)
409{ 757{
758#if __GLIBC__
759 return realloc (ptr, size);
760#else
410 /* some systems, notably openbsd and darwin, fail to properly 761 /* some systems, notably openbsd and darwin, fail to properly
411 * implement realloc (x, 0) (as required by both ansi c-98 and 762 * implement realloc (x, 0) (as required by both ansi c-89 and
412 * the single unix specification, so work around them here. 763 * the single unix specification, so work around them here.
413 */ 764 */
414 765
415 if (size) 766 if (size)
416 return realloc (ptr, size); 767 return realloc (ptr, size);
417 768
418 free (ptr); 769 free (ptr);
419 return 0; 770 return 0;
771#endif
420} 772}
421 773
422static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 774static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
423 775
424void 776void ecb_cold
425ev_set_allocator (void *(*cb)(void *ptr, long size)) 777ev_set_allocator (void *(*cb)(void *ptr, long size))
426{ 778{
427 alloc = cb; 779 alloc = cb;
428} 780}
429 781
… …
432{ 784{
433 ptr = alloc (ptr, size); 785 ptr = alloc (ptr, size);
434 786
435 if (!ptr && size) 787 if (!ptr && size)
436 { 788 {
789#if EV_AVOID_STDIO
790 ev_printerr ("(libev) memory allocation failed, aborting.\n");
791#else
437 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 792 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
793#endif
438 abort (); 794 abort ();
439 } 795 }
440 796
441 return ptr; 797 return ptr;
442} 798}
… …
444#define ev_malloc(size) ev_realloc (0, (size)) 800#define ev_malloc(size) ev_realloc (0, (size))
445#define ev_free(ptr) ev_realloc ((ptr), 0) 801#define ev_free(ptr) ev_realloc ((ptr), 0)
446 802
447/*****************************************************************************/ 803/*****************************************************************************/
448 804
805/* set in reify when reification needed */
806#define EV_ANFD_REIFY 1
807
808/* file descriptor info structure */
449typedef struct 809typedef struct
450{ 810{
451 WL head; 811 WL head;
452 unsigned char events; 812 unsigned char events; /* the events watched for */
453 unsigned char reify; 813 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
454 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 814 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
455 unsigned char unused; /* currently unused padding */ 815 unsigned char unused;
816#if EV_USE_EPOLL
817 unsigned int egen; /* generation counter to counter epoll bugs */
818#endif
456#if EV_SELECT_IS_WINSOCKET 819#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
457 SOCKET handle; 820 SOCKET handle;
458#endif 821#endif
822#if EV_USE_IOCP
823 OVERLAPPED or, ow;
824#endif
459} ANFD; 825} ANFD;
460 826
827/* stores the pending event set for a given watcher */
461typedef struct 828typedef struct
462{ 829{
463 W w; 830 W w;
464 int events; 831 int events; /* the pending event set for the given watcher */
465} ANPENDING; 832} ANPENDING;
466 833
467#if EV_USE_INOTIFY 834#if EV_USE_INOTIFY
468/* hash table entry per inotify-id */ 835/* hash table entry per inotify-id */
469typedef struct 836typedef struct
… …
472} ANFS; 839} ANFS;
473#endif 840#endif
474 841
475/* Heap Entry */ 842/* Heap Entry */
476#if EV_HEAP_CACHE_AT 843#if EV_HEAP_CACHE_AT
844 /* a heap element */
477 typedef struct { 845 typedef struct {
478 ev_tstamp at; 846 ev_tstamp at;
479 WT w; 847 WT w;
480 } ANHE; 848 } ANHE;
481 849
482 #define ANHE_w(he) (he).w /* access watcher, read-write */ 850 #define ANHE_w(he) (he).w /* access watcher, read-write */
483 #define ANHE_at(he) (he).at /* access cached at, read-only */ 851 #define ANHE_at(he) (he).at /* access cached at, read-only */
484 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 852 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
485#else 853#else
854 /* a heap element */
486 typedef WT ANHE; 855 typedef WT ANHE;
487 856
488 #define ANHE_w(he) (he) 857 #define ANHE_w(he) (he)
489 #define ANHE_at(he) (he)->at 858 #define ANHE_at(he) (he)->at
490 #define ANHE_at_cache(he) 859 #define ANHE_at_cache(he)
… …
514 883
515 static int ev_default_loop_ptr; 884 static int ev_default_loop_ptr;
516 885
517#endif 886#endif
518 887
888#if EV_FEATURE_API
889# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
890# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
891# define EV_INVOKE_PENDING invoke_cb (EV_A)
892#else
893# define EV_RELEASE_CB (void)0
894# define EV_ACQUIRE_CB (void)0
895# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
896#endif
897
898#define EVBREAK_RECURSE 0x80
899
519/*****************************************************************************/ 900/*****************************************************************************/
520 901
902#ifndef EV_HAVE_EV_TIME
521ev_tstamp 903ev_tstamp
522ev_time (void) 904ev_time (void)
523{ 905{
524#if EV_USE_REALTIME 906#if EV_USE_REALTIME
907 if (expect_true (have_realtime))
908 {
525 struct timespec ts; 909 struct timespec ts;
526 clock_gettime (CLOCK_REALTIME, &ts); 910 clock_gettime (CLOCK_REALTIME, &ts);
527 return ts.tv_sec + ts.tv_nsec * 1e-9; 911 return ts.tv_sec + ts.tv_nsec * 1e-9;
528#else 912 }
913#endif
914
529 struct timeval tv; 915 struct timeval tv;
530 gettimeofday (&tv, 0); 916 gettimeofday (&tv, 0);
531 return tv.tv_sec + tv.tv_usec * 1e-6; 917 return tv.tv_sec + tv.tv_usec * 1e-6;
532#endif
533} 918}
919#endif
534 920
535ev_tstamp inline_size 921inline_size ev_tstamp
536get_clock (void) 922get_clock (void)
537{ 923{
538#if EV_USE_MONOTONIC 924#if EV_USE_MONOTONIC
539 if (expect_true (have_monotonic)) 925 if (expect_true (have_monotonic))
540 { 926 {
… …
561 if (delay > 0.) 947 if (delay > 0.)
562 { 948 {
563#if EV_USE_NANOSLEEP 949#if EV_USE_NANOSLEEP
564 struct timespec ts; 950 struct timespec ts;
565 951
566 ts.tv_sec = (time_t)delay; 952 EV_TS_SET (ts, delay);
567 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
568
569 nanosleep (&ts, 0); 953 nanosleep (&ts, 0);
570#elif defined(_WIN32) 954#elif defined(_WIN32)
571 Sleep ((unsigned long)(delay * 1e3)); 955 Sleep ((unsigned long)(delay * 1e3));
572#else 956#else
573 struct timeval tv; 957 struct timeval tv;
574 958
575 tv.tv_sec = (time_t)delay;
576 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
577
578 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 959 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
579 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 960 /* something not guaranteed by newer posix versions, but guaranteed */
580 /* by older ones */ 961 /* by older ones */
962 EV_TV_SET (tv, delay);
581 select (0, 0, 0, 0, &tv); 963 select (0, 0, 0, 0, &tv);
582#endif 964#endif
583 } 965 }
584} 966}
585 967
586/*****************************************************************************/ 968/*****************************************************************************/
587 969
588#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 970#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
589 971
590int inline_size 972/* find a suitable new size for the given array, */
973/* hopefully by rounding to a nice-to-malloc size */
974inline_size int
591array_nextsize (int elem, int cur, int cnt) 975array_nextsize (int elem, int cur, int cnt)
592{ 976{
593 int ncur = cur + 1; 977 int ncur = cur + 1;
594 978
595 do 979 do
… …
606 } 990 }
607 991
608 return ncur; 992 return ncur;
609} 993}
610 994
611static noinline void * 995static void * noinline ecb_cold
612array_realloc (int elem, void *base, int *cur, int cnt) 996array_realloc (int elem, void *base, int *cur, int cnt)
613{ 997{
614 *cur = array_nextsize (elem, *cur, cnt); 998 *cur = array_nextsize (elem, *cur, cnt);
615 return ev_realloc (base, elem * *cur); 999 return ev_realloc (base, elem * *cur);
616} 1000}
… …
619 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1003 memset ((void *)(base), 0, sizeof (*(base)) * (count))
620 1004
621#define array_needsize(type,base,cur,cnt,init) \ 1005#define array_needsize(type,base,cur,cnt,init) \
622 if (expect_false ((cnt) > (cur))) \ 1006 if (expect_false ((cnt) > (cur))) \
623 { \ 1007 { \
624 int ocur_ = (cur); \ 1008 int ecb_unused ocur_ = (cur); \
625 (base) = (type *)array_realloc \ 1009 (base) = (type *)array_realloc \
626 (sizeof (type), (base), &(cur), (cnt)); \ 1010 (sizeof (type), (base), &(cur), (cnt)); \
627 init ((base) + (ocur_), (cur) - ocur_); \ 1011 init ((base) + (ocur_), (cur) - ocur_); \
628 } 1012 }
629 1013
… …
636 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1020 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
637 } 1021 }
638#endif 1022#endif
639 1023
640#define array_free(stem, idx) \ 1024#define array_free(stem, idx) \
641 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1025 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
642 1026
643/*****************************************************************************/ 1027/*****************************************************************************/
1028
1029/* dummy callback for pending events */
1030static void noinline
1031pendingcb (EV_P_ ev_prepare *w, int revents)
1032{
1033}
644 1034
645void noinline 1035void noinline
646ev_feed_event (EV_P_ void *w, int revents) 1036ev_feed_event (EV_P_ void *w, int revents)
647{ 1037{
648 W w_ = (W)w; 1038 W w_ = (W)w;
… …
657 pendings [pri][w_->pending - 1].w = w_; 1047 pendings [pri][w_->pending - 1].w = w_;
658 pendings [pri][w_->pending - 1].events = revents; 1048 pendings [pri][w_->pending - 1].events = revents;
659 } 1049 }
660} 1050}
661 1051
662void inline_speed 1052inline_speed void
1053feed_reverse (EV_P_ W w)
1054{
1055 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1056 rfeeds [rfeedcnt++] = w;
1057}
1058
1059inline_size void
1060feed_reverse_done (EV_P_ int revents)
1061{
1062 do
1063 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1064 while (rfeedcnt);
1065}
1066
1067inline_speed void
663queue_events (EV_P_ W *events, int eventcnt, int type) 1068queue_events (EV_P_ W *events, int eventcnt, int type)
664{ 1069{
665 int i; 1070 int i;
666 1071
667 for (i = 0; i < eventcnt; ++i) 1072 for (i = 0; i < eventcnt; ++i)
668 ev_feed_event (EV_A_ events [i], type); 1073 ev_feed_event (EV_A_ events [i], type);
669} 1074}
670 1075
671/*****************************************************************************/ 1076/*****************************************************************************/
672 1077
673void inline_speed 1078inline_speed void
674fd_event (EV_P_ int fd, int revents) 1079fd_event_nocheck (EV_P_ int fd, int revents)
675{ 1080{
676 ANFD *anfd = anfds + fd; 1081 ANFD *anfd = anfds + fd;
677 ev_io *w; 1082 ev_io *w;
678 1083
679 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1084 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
683 if (ev) 1088 if (ev)
684 ev_feed_event (EV_A_ (W)w, ev); 1089 ev_feed_event (EV_A_ (W)w, ev);
685 } 1090 }
686} 1091}
687 1092
1093/* do not submit kernel events for fds that have reify set */
1094/* because that means they changed while we were polling for new events */
1095inline_speed void
1096fd_event (EV_P_ int fd, int revents)
1097{
1098 ANFD *anfd = anfds + fd;
1099
1100 if (expect_true (!anfd->reify))
1101 fd_event_nocheck (EV_A_ fd, revents);
1102}
1103
688void 1104void
689ev_feed_fd_event (EV_P_ int fd, int revents) 1105ev_feed_fd_event (EV_P_ int fd, int revents)
690{ 1106{
691 if (fd >= 0 && fd < anfdmax) 1107 if (fd >= 0 && fd < anfdmax)
692 fd_event (EV_A_ fd, revents); 1108 fd_event_nocheck (EV_A_ fd, revents);
693} 1109}
694 1110
695void inline_size 1111/* make sure the external fd watch events are in-sync */
1112/* with the kernel/libev internal state */
1113inline_size void
696fd_reify (EV_P) 1114fd_reify (EV_P)
697{ 1115{
698 int i; 1116 int i;
1117
1118#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1119 for (i = 0; i < fdchangecnt; ++i)
1120 {
1121 int fd = fdchanges [i];
1122 ANFD *anfd = anfds + fd;
1123
1124 if (anfd->reify & EV__IOFDSET && anfd->head)
1125 {
1126 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1127
1128 if (handle != anfd->handle)
1129 {
1130 unsigned long arg;
1131
1132 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1133
1134 /* handle changed, but fd didn't - we need to do it in two steps */
1135 backend_modify (EV_A_ fd, anfd->events, 0);
1136 anfd->events = 0;
1137 anfd->handle = handle;
1138 }
1139 }
1140 }
1141#endif
699 1142
700 for (i = 0; i < fdchangecnt; ++i) 1143 for (i = 0; i < fdchangecnt; ++i)
701 { 1144 {
702 int fd = fdchanges [i]; 1145 int fd = fdchanges [i];
703 ANFD *anfd = anfds + fd; 1146 ANFD *anfd = anfds + fd;
704 ev_io *w; 1147 ev_io *w;
705 1148
706 unsigned char events = 0; 1149 unsigned char o_events = anfd->events;
1150 unsigned char o_reify = anfd->reify;
707 1151
708 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1152 anfd->reify = 0;
709 events |= (unsigned char)w->events;
710 1153
711#if EV_SELECT_IS_WINSOCKET 1154 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
712 if (events)
713 { 1155 {
714 unsigned long arg; 1156 anfd->events = 0;
715 #ifdef EV_FD_TO_WIN32_HANDLE 1157
716 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1158 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
717 #else 1159 anfd->events |= (unsigned char)w->events;
718 anfd->handle = _get_osfhandle (fd); 1160
719 #endif 1161 if (o_events != anfd->events)
720 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1162 o_reify = EV__IOFDSET; /* actually |= */
721 } 1163 }
722#endif
723 1164
724 { 1165 if (o_reify & EV__IOFDSET)
725 unsigned char o_events = anfd->events;
726 unsigned char o_reify = anfd->reify;
727
728 anfd->reify = 0;
729 anfd->events = events;
730
731 if (o_events != events || o_reify & EV_IOFDSET)
732 backend_modify (EV_A_ fd, o_events, events); 1166 backend_modify (EV_A_ fd, o_events, anfd->events);
733 }
734 } 1167 }
735 1168
736 fdchangecnt = 0; 1169 fdchangecnt = 0;
737} 1170}
738 1171
739void inline_size 1172/* something about the given fd changed */
1173inline_size void
740fd_change (EV_P_ int fd, int flags) 1174fd_change (EV_P_ int fd, int flags)
741{ 1175{
742 unsigned char reify = anfds [fd].reify; 1176 unsigned char reify = anfds [fd].reify;
743 anfds [fd].reify |= flags; 1177 anfds [fd].reify |= flags;
744 1178
… …
748 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1182 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
749 fdchanges [fdchangecnt - 1] = fd; 1183 fdchanges [fdchangecnt - 1] = fd;
750 } 1184 }
751} 1185}
752 1186
753void inline_speed 1187/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1188inline_speed void ecb_cold
754fd_kill (EV_P_ int fd) 1189fd_kill (EV_P_ int fd)
755{ 1190{
756 ev_io *w; 1191 ev_io *w;
757 1192
758 while ((w = (ev_io *)anfds [fd].head)) 1193 while ((w = (ev_io *)anfds [fd].head))
… …
760 ev_io_stop (EV_A_ w); 1195 ev_io_stop (EV_A_ w);
761 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1196 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
762 } 1197 }
763} 1198}
764 1199
765int inline_size 1200/* check whether the given fd is actually valid, for error recovery */
1201inline_size int ecb_cold
766fd_valid (int fd) 1202fd_valid (int fd)
767{ 1203{
768#ifdef _WIN32 1204#ifdef _WIN32
769 return _get_osfhandle (fd) != -1; 1205 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
770#else 1206#else
771 return fcntl (fd, F_GETFD) != -1; 1207 return fcntl (fd, F_GETFD) != -1;
772#endif 1208#endif
773} 1209}
774 1210
775/* called on EBADF to verify fds */ 1211/* called on EBADF to verify fds */
776static void noinline 1212static void noinline ecb_cold
777fd_ebadf (EV_P) 1213fd_ebadf (EV_P)
778{ 1214{
779 int fd; 1215 int fd;
780 1216
781 for (fd = 0; fd < anfdmax; ++fd) 1217 for (fd = 0; fd < anfdmax; ++fd)
… …
783 if (!fd_valid (fd) && errno == EBADF) 1219 if (!fd_valid (fd) && errno == EBADF)
784 fd_kill (EV_A_ fd); 1220 fd_kill (EV_A_ fd);
785} 1221}
786 1222
787/* called on ENOMEM in select/poll to kill some fds and retry */ 1223/* called on ENOMEM in select/poll to kill some fds and retry */
788static void noinline 1224static void noinline ecb_cold
789fd_enomem (EV_P) 1225fd_enomem (EV_P)
790{ 1226{
791 int fd; 1227 int fd;
792 1228
793 for (fd = anfdmax; fd--; ) 1229 for (fd = anfdmax; fd--; )
794 if (anfds [fd].events) 1230 if (anfds [fd].events)
795 { 1231 {
796 fd_kill (EV_A_ fd); 1232 fd_kill (EV_A_ fd);
797 return; 1233 break;
798 } 1234 }
799} 1235}
800 1236
801/* usually called after fork if backend needs to re-arm all fds from scratch */ 1237/* usually called after fork if backend needs to re-arm all fds from scratch */
802static void noinline 1238static void noinline
… …
806 1242
807 for (fd = 0; fd < anfdmax; ++fd) 1243 for (fd = 0; fd < anfdmax; ++fd)
808 if (anfds [fd].events) 1244 if (anfds [fd].events)
809 { 1245 {
810 anfds [fd].events = 0; 1246 anfds [fd].events = 0;
1247 anfds [fd].emask = 0;
811 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1248 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
812 } 1249 }
813} 1250}
814 1251
1252/* used to prepare libev internal fd's */
1253/* this is not fork-safe */
1254inline_speed void
1255fd_intern (int fd)
1256{
1257#ifdef _WIN32
1258 unsigned long arg = 1;
1259 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1260#else
1261 fcntl (fd, F_SETFD, FD_CLOEXEC);
1262 fcntl (fd, F_SETFL, O_NONBLOCK);
1263#endif
1264}
1265
815/*****************************************************************************/ 1266/*****************************************************************************/
816 1267
817/* 1268/*
818 * the heap functions want a real array index. array index 0 uis guaranteed to not 1269 * the heap functions want a real array index. array index 0 is guaranteed to not
819 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1270 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
820 * the branching factor of the d-tree. 1271 * the branching factor of the d-tree.
821 */ 1272 */
822 1273
823/* 1274/*
… …
832#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1283#define HEAP0 (DHEAP - 1) /* index of first element in heap */
833#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1284#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
834#define UPHEAP_DONE(p,k) ((p) == (k)) 1285#define UPHEAP_DONE(p,k) ((p) == (k))
835 1286
836/* away from the root */ 1287/* away from the root */
837void inline_speed 1288inline_speed void
838downheap (ANHE *heap, int N, int k) 1289downheap (ANHE *heap, int N, int k)
839{ 1290{
840 ANHE he = heap [k]; 1291 ANHE he = heap [k];
841 ANHE *E = heap + N + HEAP0; 1292 ANHE *E = heap + N + HEAP0;
842 1293
… …
882#define HEAP0 1 1333#define HEAP0 1
883#define HPARENT(k) ((k) >> 1) 1334#define HPARENT(k) ((k) >> 1)
884#define UPHEAP_DONE(p,k) (!(p)) 1335#define UPHEAP_DONE(p,k) (!(p))
885 1336
886/* away from the root */ 1337/* away from the root */
887void inline_speed 1338inline_speed void
888downheap (ANHE *heap, int N, int k) 1339downheap (ANHE *heap, int N, int k)
889{ 1340{
890 ANHE he = heap [k]; 1341 ANHE he = heap [k];
891 1342
892 for (;;) 1343 for (;;)
893 { 1344 {
894 int c = k << 1; 1345 int c = k << 1;
895 1346
896 if (c > N + HEAP0 - 1) 1347 if (c >= N + HEAP0)
897 break; 1348 break;
898 1349
899 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1350 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
900 ? 1 : 0; 1351 ? 1 : 0;
901 1352
… …
912 ev_active (ANHE_w (he)) = k; 1363 ev_active (ANHE_w (he)) = k;
913} 1364}
914#endif 1365#endif
915 1366
916/* towards the root */ 1367/* towards the root */
917void inline_speed 1368inline_speed void
918upheap (ANHE *heap, int k) 1369upheap (ANHE *heap, int k)
919{ 1370{
920 ANHE he = heap [k]; 1371 ANHE he = heap [k];
921 1372
922 for (;;) 1373 for (;;)
… …
933 1384
934 heap [k] = he; 1385 heap [k] = he;
935 ev_active (ANHE_w (he)) = k; 1386 ev_active (ANHE_w (he)) = k;
936} 1387}
937 1388
938void inline_size 1389/* move an element suitably so it is in a correct place */
1390inline_size void
939adjustheap (ANHE *heap, int N, int k) 1391adjustheap (ANHE *heap, int N, int k)
940{ 1392{
941 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1393 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
942 upheap (heap, k); 1394 upheap (heap, k);
943 else 1395 else
944 downheap (heap, N, k); 1396 downheap (heap, N, k);
945} 1397}
946 1398
947/* rebuild the heap: this function is used only once and executed rarely */ 1399/* rebuild the heap: this function is used only once and executed rarely */
948void inline_size 1400inline_size void
949reheap (ANHE *heap, int N) 1401reheap (ANHE *heap, int N)
950{ 1402{
951 int i; 1403 int i;
952 1404
953 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1405 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
956 upheap (heap, i + HEAP0); 1408 upheap (heap, i + HEAP0);
957} 1409}
958 1410
959/*****************************************************************************/ 1411/*****************************************************************************/
960 1412
1413/* associate signal watchers to a signal signal */
961typedef struct 1414typedef struct
962{ 1415{
1416 EV_ATOMIC_T pending;
1417#if EV_MULTIPLICITY
1418 EV_P;
1419#endif
963 WL head; 1420 WL head;
964 EV_ATOMIC_T gotsig;
965} ANSIG; 1421} ANSIG;
966 1422
967static ANSIG *signals; 1423static ANSIG signals [EV_NSIG - 1];
968static int signalmax;
969
970static EV_ATOMIC_T gotsig;
971 1424
972/*****************************************************************************/ 1425/*****************************************************************************/
973 1426
974void inline_speed 1427#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
975fd_intern (int fd)
976{
977#ifdef _WIN32
978 unsigned long arg = 1;
979 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
980#else
981 fcntl (fd, F_SETFD, FD_CLOEXEC);
982 fcntl (fd, F_SETFL, O_NONBLOCK);
983#endif
984}
985 1428
986static void noinline 1429static void noinline ecb_cold
987evpipe_init (EV_P) 1430evpipe_init (EV_P)
988{ 1431{
989 if (!ev_is_active (&pipeev)) 1432 if (!ev_is_active (&pipe_w))
990 { 1433 {
991#if EV_USE_EVENTFD 1434# if EV_USE_EVENTFD
1435 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1436 if (evfd < 0 && errno == EINVAL)
992 if ((evfd = eventfd (0, 0)) >= 0) 1437 evfd = eventfd (0, 0);
1438
1439 if (evfd >= 0)
993 { 1440 {
994 evpipe [0] = -1; 1441 evpipe [0] = -1;
995 fd_intern (evfd); 1442 fd_intern (evfd); /* doing it twice doesn't hurt */
996 ev_io_set (&pipeev, evfd, EV_READ); 1443 ev_io_set (&pipe_w, evfd, EV_READ);
997 } 1444 }
998 else 1445 else
999#endif 1446# endif
1000 { 1447 {
1001 while (pipe (evpipe)) 1448 while (pipe (evpipe))
1002 syserr ("(libev) error creating signal/async pipe"); 1449 ev_syserr ("(libev) error creating signal/async pipe");
1003 1450
1004 fd_intern (evpipe [0]); 1451 fd_intern (evpipe [0]);
1005 fd_intern (evpipe [1]); 1452 fd_intern (evpipe [1]);
1006 ev_io_set (&pipeev, evpipe [0], EV_READ); 1453 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1007 } 1454 }
1008 1455
1009 ev_io_start (EV_A_ &pipeev); 1456 ev_io_start (EV_A_ &pipe_w);
1010 ev_unref (EV_A); /* watcher should not keep loop alive */ 1457 ev_unref (EV_A); /* watcher should not keep loop alive */
1011 } 1458 }
1012} 1459}
1013 1460
1014void inline_size 1461inline_speed void
1015evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1462evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1016{ 1463{
1017 if (!*flag) 1464 if (expect_true (*flag))
1465 return;
1466
1467 *flag = 1;
1468
1469 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1470
1471 pipe_write_skipped = 1;
1472
1473 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1474
1475 if (pipe_write_wanted)
1018 { 1476 {
1477 int old_errno;
1478
1479 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1480
1019 int old_errno = errno; /* save errno because write might clobber it */ 1481 old_errno = errno; /* save errno because write will clobber it */
1020
1021 *flag = 1;
1022 1482
1023#if EV_USE_EVENTFD 1483#if EV_USE_EVENTFD
1024 if (evfd >= 0) 1484 if (evfd >= 0)
1025 { 1485 {
1026 uint64_t counter = 1; 1486 uint64_t counter = 1;
1027 write (evfd, &counter, sizeof (uint64_t)); 1487 write (evfd, &counter, sizeof (uint64_t));
1028 } 1488 }
1029 else 1489 else
1030#endif 1490#endif
1491 {
1492 /* win32 people keep sending patches that change this write() to send() */
1493 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1494 /* so when you think this write should be a send instead, please find out */
1495 /* where your send() is from - it's definitely not the microsoft send, and */
1496 /* tell me. thank you. */
1031 write (evpipe [1], &old_errno, 1); 1497 write (evpipe [1], &(evpipe [1]), 1);
1498 }
1032 1499
1033 errno = old_errno; 1500 errno = old_errno;
1034 } 1501 }
1035} 1502}
1036 1503
1504/* called whenever the libev signal pipe */
1505/* got some events (signal, async) */
1037static void 1506static void
1038pipecb (EV_P_ ev_io *iow, int revents) 1507pipecb (EV_P_ ev_io *iow, int revents)
1039{ 1508{
1509 int i;
1510
1511 if (revents & EV_READ)
1512 {
1040#if EV_USE_EVENTFD 1513#if EV_USE_EVENTFD
1041 if (evfd >= 0) 1514 if (evfd >= 0)
1042 { 1515 {
1043 uint64_t counter; 1516 uint64_t counter;
1044 read (evfd, &counter, sizeof (uint64_t)); 1517 read (evfd, &counter, sizeof (uint64_t));
1045 } 1518 }
1046 else 1519 else
1047#endif 1520#endif
1048 { 1521 {
1049 char dummy; 1522 char dummy;
1523 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1050 read (evpipe [0], &dummy, 1); 1524 read (evpipe [0], &dummy, 1);
1525 }
1526 }
1527
1528 pipe_write_skipped = 0;
1529
1530#if EV_SIGNAL_ENABLE
1531 if (sig_pending)
1051 } 1532 {
1533 sig_pending = 0;
1052 1534
1053 if (gotsig && ev_is_default_loop (EV_A)) 1535 for (i = EV_NSIG - 1; i--; )
1054 { 1536 if (expect_false (signals [i].pending))
1055 int signum;
1056 gotsig = 0;
1057
1058 for (signum = signalmax; signum--; )
1059 if (signals [signum].gotsig)
1060 ev_feed_signal_event (EV_A_ signum + 1); 1537 ev_feed_signal_event (EV_A_ i + 1);
1061 } 1538 }
1539#endif
1062 1540
1063#if EV_ASYNC_ENABLE 1541#if EV_ASYNC_ENABLE
1064 if (gotasync) 1542 if (async_pending)
1065 { 1543 {
1066 int i; 1544 async_pending = 0;
1067 gotasync = 0;
1068 1545
1069 for (i = asynccnt; i--; ) 1546 for (i = asynccnt; i--; )
1070 if (asyncs [i]->sent) 1547 if (asyncs [i]->sent)
1071 { 1548 {
1072 asyncs [i]->sent = 0; 1549 asyncs [i]->sent = 0;
… …
1076#endif 1553#endif
1077} 1554}
1078 1555
1079/*****************************************************************************/ 1556/*****************************************************************************/
1080 1557
1558void
1559ev_feed_signal (int signum)
1560{
1561#if EV_MULTIPLICITY
1562 EV_P = signals [signum - 1].loop;
1563
1564 if (!EV_A)
1565 return;
1566#endif
1567
1568 if (!ev_active (&pipe_w))
1569 return;
1570
1571 signals [signum - 1].pending = 1;
1572 evpipe_write (EV_A_ &sig_pending);
1573}
1574
1081static void 1575static void
1082ev_sighandler (int signum) 1576ev_sighandler (int signum)
1083{ 1577{
1084#if EV_MULTIPLICITY
1085 struct ev_loop *loop = &default_loop_struct;
1086#endif
1087
1088#if _WIN32 1578#ifdef _WIN32
1089 signal (signum, ev_sighandler); 1579 signal (signum, ev_sighandler);
1090#endif 1580#endif
1091 1581
1092 signals [signum - 1].gotsig = 1; 1582 ev_feed_signal (signum);
1093 evpipe_write (EV_A_ &gotsig);
1094} 1583}
1095 1584
1096void noinline 1585void noinline
1097ev_feed_signal_event (EV_P_ int signum) 1586ev_feed_signal_event (EV_P_ int signum)
1098{ 1587{
1099 WL w; 1588 WL w;
1100 1589
1590 if (expect_false (signum <= 0 || signum > EV_NSIG))
1591 return;
1592
1593 --signum;
1594
1101#if EV_MULTIPLICITY 1595#if EV_MULTIPLICITY
1102 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1596 /* it is permissible to try to feed a signal to the wrong loop */
1103#endif 1597 /* or, likely more useful, feeding a signal nobody is waiting for */
1104 1598
1105 --signum; 1599 if (expect_false (signals [signum].loop != EV_A))
1106
1107 if (signum < 0 || signum >= signalmax)
1108 return; 1600 return;
1601#endif
1109 1602
1110 signals [signum].gotsig = 0; 1603 signals [signum].pending = 0;
1111 1604
1112 for (w = signals [signum].head; w; w = w->next) 1605 for (w = signals [signum].head; w; w = w->next)
1113 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1606 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1114} 1607}
1115 1608
1609#if EV_USE_SIGNALFD
1610static void
1611sigfdcb (EV_P_ ev_io *iow, int revents)
1612{
1613 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1614
1615 for (;;)
1616 {
1617 ssize_t res = read (sigfd, si, sizeof (si));
1618
1619 /* not ISO-C, as res might be -1, but works with SuS */
1620 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1621 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1622
1623 if (res < (ssize_t)sizeof (si))
1624 break;
1625 }
1626}
1627#endif
1628
1629#endif
1630
1116/*****************************************************************************/ 1631/*****************************************************************************/
1117 1632
1633#if EV_CHILD_ENABLE
1118static WL childs [EV_PID_HASHSIZE]; 1634static WL childs [EV_PID_HASHSIZE];
1119
1120#ifndef _WIN32
1121 1635
1122static ev_signal childev; 1636static ev_signal childev;
1123 1637
1124#ifndef WIFCONTINUED 1638#ifndef WIFCONTINUED
1125# define WIFCONTINUED(status) 0 1639# define WIFCONTINUED(status) 0
1126#endif 1640#endif
1127 1641
1128void inline_speed 1642/* handle a single child status event */
1643inline_speed void
1129child_reap (EV_P_ int chain, int pid, int status) 1644child_reap (EV_P_ int chain, int pid, int status)
1130{ 1645{
1131 ev_child *w; 1646 ev_child *w;
1132 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1647 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1133 1648
1134 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1649 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1135 { 1650 {
1136 if ((w->pid == pid || !w->pid) 1651 if ((w->pid == pid || !w->pid)
1137 && (!traced || (w->flags & 1))) 1652 && (!traced || (w->flags & 1)))
1138 { 1653 {
1139 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1654 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1146 1661
1147#ifndef WCONTINUED 1662#ifndef WCONTINUED
1148# define WCONTINUED 0 1663# define WCONTINUED 0
1149#endif 1664#endif
1150 1665
1666/* called on sigchld etc., calls waitpid */
1151static void 1667static void
1152childcb (EV_P_ ev_signal *sw, int revents) 1668childcb (EV_P_ ev_signal *sw, int revents)
1153{ 1669{
1154 int pid, status; 1670 int pid, status;
1155 1671
… …
1163 /* make sure we are called again until all children have been reaped */ 1679 /* make sure we are called again until all children have been reaped */
1164 /* we need to do it this way so that the callback gets called before we continue */ 1680 /* we need to do it this way so that the callback gets called before we continue */
1165 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1681 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1166 1682
1167 child_reap (EV_A_ pid, pid, status); 1683 child_reap (EV_A_ pid, pid, status);
1168 if (EV_PID_HASHSIZE > 1) 1684 if ((EV_PID_HASHSIZE) > 1)
1169 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1685 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1170} 1686}
1171 1687
1172#endif 1688#endif
1173 1689
1174/*****************************************************************************/ 1690/*****************************************************************************/
1175 1691
1692#if EV_USE_IOCP
1693# include "ev_iocp.c"
1694#endif
1176#if EV_USE_PORT 1695#if EV_USE_PORT
1177# include "ev_port.c" 1696# include "ev_port.c"
1178#endif 1697#endif
1179#if EV_USE_KQUEUE 1698#if EV_USE_KQUEUE
1180# include "ev_kqueue.c" 1699# include "ev_kqueue.c"
… …
1187#endif 1706#endif
1188#if EV_USE_SELECT 1707#if EV_USE_SELECT
1189# include "ev_select.c" 1708# include "ev_select.c"
1190#endif 1709#endif
1191 1710
1192int 1711int ecb_cold
1193ev_version_major (void) 1712ev_version_major (void)
1194{ 1713{
1195 return EV_VERSION_MAJOR; 1714 return EV_VERSION_MAJOR;
1196} 1715}
1197 1716
1198int 1717int ecb_cold
1199ev_version_minor (void) 1718ev_version_minor (void)
1200{ 1719{
1201 return EV_VERSION_MINOR; 1720 return EV_VERSION_MINOR;
1202} 1721}
1203 1722
1204/* return true if we are running with elevated privileges and should ignore env variables */ 1723/* return true if we are running with elevated privileges and should ignore env variables */
1205int inline_size 1724int inline_size ecb_cold
1206enable_secure (void) 1725enable_secure (void)
1207{ 1726{
1208#ifdef _WIN32 1727#ifdef _WIN32
1209 return 0; 1728 return 0;
1210#else 1729#else
1211 return getuid () != geteuid () 1730 return getuid () != geteuid ()
1212 || getgid () != getegid (); 1731 || getgid () != getegid ();
1213#endif 1732#endif
1214} 1733}
1215 1734
1216unsigned int 1735unsigned int ecb_cold
1217ev_supported_backends (void) 1736ev_supported_backends (void)
1218{ 1737{
1219 unsigned int flags = 0; 1738 unsigned int flags = 0;
1220 1739
1221 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1740 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1225 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1744 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1226 1745
1227 return flags; 1746 return flags;
1228} 1747}
1229 1748
1230unsigned int 1749unsigned int ecb_cold
1231ev_recommended_backends (void) 1750ev_recommended_backends (void)
1232{ 1751{
1233 unsigned int flags = ev_supported_backends (); 1752 unsigned int flags = ev_supported_backends ();
1234 1753
1235#ifndef __NetBSD__ 1754#ifndef __NetBSD__
1236 /* kqueue is borked on everything but netbsd apparently */ 1755 /* kqueue is borked on everything but netbsd apparently */
1237 /* it usually doesn't work correctly on anything but sockets and pipes */ 1756 /* it usually doesn't work correctly on anything but sockets and pipes */
1238 flags &= ~EVBACKEND_KQUEUE; 1757 flags &= ~EVBACKEND_KQUEUE;
1239#endif 1758#endif
1240#ifdef __APPLE__ 1759#ifdef __APPLE__
1241 // flags &= ~EVBACKEND_KQUEUE; for documentation 1760 /* only select works correctly on that "unix-certified" platform */
1242 flags &= ~EVBACKEND_POLL; 1761 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1762 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1763#endif
1764#ifdef __FreeBSD__
1765 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1243#endif 1766#endif
1244 1767
1245 return flags; 1768 return flags;
1246} 1769}
1247 1770
1248unsigned int 1771unsigned int ecb_cold
1249ev_embeddable_backends (void) 1772ev_embeddable_backends (void)
1250{ 1773{
1251 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1774 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1252 1775
1253 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1776 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1254 /* please fix it and tell me how to detect the fix */ 1777 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1255 flags &= ~EVBACKEND_EPOLL; 1778 flags &= ~EVBACKEND_EPOLL;
1256 1779
1257 return flags; 1780 return flags;
1258} 1781}
1259 1782
1260unsigned int 1783unsigned int
1261ev_backend (EV_P) 1784ev_backend (EV_P)
1262{ 1785{
1263 return backend; 1786 return backend;
1264} 1787}
1265 1788
1789#if EV_FEATURE_API
1266unsigned int 1790unsigned int
1267ev_loop_count (EV_P) 1791ev_iteration (EV_P)
1268{ 1792{
1269 return loop_count; 1793 return loop_count;
1794}
1795
1796unsigned int
1797ev_depth (EV_P)
1798{
1799 return loop_depth;
1270} 1800}
1271 1801
1272void 1802void
1273ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1803ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1274{ 1804{
… …
1279ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1809ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1280{ 1810{
1281 timeout_blocktime = interval; 1811 timeout_blocktime = interval;
1282} 1812}
1283 1813
1814void
1815ev_set_userdata (EV_P_ void *data)
1816{
1817 userdata = data;
1818}
1819
1820void *
1821ev_userdata (EV_P)
1822{
1823 return userdata;
1824}
1825
1826void
1827ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1828{
1829 invoke_cb = invoke_pending_cb;
1830}
1831
1832void
1833ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1834{
1835 release_cb = release;
1836 acquire_cb = acquire;
1837}
1838#endif
1839
1840/* initialise a loop structure, must be zero-initialised */
1284static void noinline 1841static void noinline ecb_cold
1285loop_init (EV_P_ unsigned int flags) 1842loop_init (EV_P_ unsigned int flags)
1286{ 1843{
1287 if (!backend) 1844 if (!backend)
1288 { 1845 {
1846 origflags = flags;
1847
1848#if EV_USE_REALTIME
1849 if (!have_realtime)
1850 {
1851 struct timespec ts;
1852
1853 if (!clock_gettime (CLOCK_REALTIME, &ts))
1854 have_realtime = 1;
1855 }
1856#endif
1857
1289#if EV_USE_MONOTONIC 1858#if EV_USE_MONOTONIC
1859 if (!have_monotonic)
1290 { 1860 {
1291 struct timespec ts; 1861 struct timespec ts;
1862
1292 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1863 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1293 have_monotonic = 1; 1864 have_monotonic = 1;
1294 } 1865 }
1295#endif
1296
1297 ev_rt_now = ev_time ();
1298 mn_now = get_clock ();
1299 now_floor = mn_now;
1300 rtmn_diff = ev_rt_now - mn_now;
1301
1302 io_blocktime = 0.;
1303 timeout_blocktime = 0.;
1304 backend = 0;
1305 backend_fd = -1;
1306 gotasync = 0;
1307#if EV_USE_INOTIFY
1308 fs_fd = -2;
1309#endif 1866#endif
1310 1867
1311 /* pid check not overridable via env */ 1868 /* pid check not overridable via env */
1312#ifndef _WIN32 1869#ifndef _WIN32
1313 if (flags & EVFLAG_FORKCHECK) 1870 if (flags & EVFLAG_FORKCHECK)
… …
1317 if (!(flags & EVFLAG_NOENV) 1874 if (!(flags & EVFLAG_NOENV)
1318 && !enable_secure () 1875 && !enable_secure ()
1319 && getenv ("LIBEV_FLAGS")) 1876 && getenv ("LIBEV_FLAGS"))
1320 flags = atoi (getenv ("LIBEV_FLAGS")); 1877 flags = atoi (getenv ("LIBEV_FLAGS"));
1321 1878
1322 if (!(flags & 0x0000ffffU)) 1879 ev_rt_now = ev_time ();
1880 mn_now = get_clock ();
1881 now_floor = mn_now;
1882 rtmn_diff = ev_rt_now - mn_now;
1883#if EV_FEATURE_API
1884 invoke_cb = ev_invoke_pending;
1885#endif
1886
1887 io_blocktime = 0.;
1888 timeout_blocktime = 0.;
1889 backend = 0;
1890 backend_fd = -1;
1891 sig_pending = 0;
1892#if EV_ASYNC_ENABLE
1893 async_pending = 0;
1894#endif
1895 pipe_write_skipped = 0;
1896 pipe_write_wanted = 0;
1897#if EV_USE_INOTIFY
1898 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1899#endif
1900#if EV_USE_SIGNALFD
1901 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1902#endif
1903
1904 if (!(flags & EVBACKEND_MASK))
1323 flags |= ev_recommended_backends (); 1905 flags |= ev_recommended_backends ();
1324 1906
1907#if EV_USE_IOCP
1908 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1909#endif
1325#if EV_USE_PORT 1910#if EV_USE_PORT
1326 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1911 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1327#endif 1912#endif
1328#if EV_USE_KQUEUE 1913#if EV_USE_KQUEUE
1329 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1914 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1336#endif 1921#endif
1337#if EV_USE_SELECT 1922#if EV_USE_SELECT
1338 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1923 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1339#endif 1924#endif
1340 1925
1926 ev_prepare_init (&pending_w, pendingcb);
1927
1928#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1341 ev_init (&pipeev, pipecb); 1929 ev_init (&pipe_w, pipecb);
1342 ev_set_priority (&pipeev, EV_MAXPRI); 1930 ev_set_priority (&pipe_w, EV_MAXPRI);
1931#endif
1343 } 1932 }
1344} 1933}
1345 1934
1346static void noinline 1935/* free up a loop structure */
1936void ecb_cold
1347loop_destroy (EV_P) 1937ev_loop_destroy (EV_P)
1348{ 1938{
1349 int i; 1939 int i;
1350 1940
1941#if EV_MULTIPLICITY
1942 /* mimic free (0) */
1943 if (!EV_A)
1944 return;
1945#endif
1946
1947#if EV_CLEANUP_ENABLE
1948 /* queue cleanup watchers (and execute them) */
1949 if (expect_false (cleanupcnt))
1950 {
1951 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1952 EV_INVOKE_PENDING;
1953 }
1954#endif
1955
1956#if EV_CHILD_ENABLE
1957 if (ev_is_active (&childev))
1958 {
1959 ev_ref (EV_A); /* child watcher */
1960 ev_signal_stop (EV_A_ &childev);
1961 }
1962#endif
1963
1351 if (ev_is_active (&pipeev)) 1964 if (ev_is_active (&pipe_w))
1352 { 1965 {
1353 ev_ref (EV_A); /* signal watcher */ 1966 /*ev_ref (EV_A);*/
1354 ev_io_stop (EV_A_ &pipeev); 1967 /*ev_io_stop (EV_A_ &pipe_w);*/
1355 1968
1356#if EV_USE_EVENTFD 1969#if EV_USE_EVENTFD
1357 if (evfd >= 0) 1970 if (evfd >= 0)
1358 close (evfd); 1971 close (evfd);
1359#endif 1972#endif
1360 1973
1361 if (evpipe [0] >= 0) 1974 if (evpipe [0] >= 0)
1362 { 1975 {
1363 close (evpipe [0]); 1976 EV_WIN32_CLOSE_FD (evpipe [0]);
1364 close (evpipe [1]); 1977 EV_WIN32_CLOSE_FD (evpipe [1]);
1365 } 1978 }
1366 } 1979 }
1980
1981#if EV_USE_SIGNALFD
1982 if (ev_is_active (&sigfd_w))
1983 close (sigfd);
1984#endif
1367 1985
1368#if EV_USE_INOTIFY 1986#if EV_USE_INOTIFY
1369 if (fs_fd >= 0) 1987 if (fs_fd >= 0)
1370 close (fs_fd); 1988 close (fs_fd);
1371#endif 1989#endif
1372 1990
1373 if (backend_fd >= 0) 1991 if (backend_fd >= 0)
1374 close (backend_fd); 1992 close (backend_fd);
1375 1993
1994#if EV_USE_IOCP
1995 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1996#endif
1376#if EV_USE_PORT 1997#if EV_USE_PORT
1377 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1998 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1378#endif 1999#endif
1379#if EV_USE_KQUEUE 2000#if EV_USE_KQUEUE
1380 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2001 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1395#if EV_IDLE_ENABLE 2016#if EV_IDLE_ENABLE
1396 array_free (idle, [i]); 2017 array_free (idle, [i]);
1397#endif 2018#endif
1398 } 2019 }
1399 2020
1400 ev_free (anfds); anfdmax = 0; 2021 ev_free (anfds); anfds = 0; anfdmax = 0;
1401 2022
1402 /* have to use the microsoft-never-gets-it-right macro */ 2023 /* have to use the microsoft-never-gets-it-right macro */
2024 array_free (rfeed, EMPTY);
1403 array_free (fdchange, EMPTY); 2025 array_free (fdchange, EMPTY);
1404 array_free (timer, EMPTY); 2026 array_free (timer, EMPTY);
1405#if EV_PERIODIC_ENABLE 2027#if EV_PERIODIC_ENABLE
1406 array_free (periodic, EMPTY); 2028 array_free (periodic, EMPTY);
1407#endif 2029#endif
1408#if EV_FORK_ENABLE 2030#if EV_FORK_ENABLE
1409 array_free (fork, EMPTY); 2031 array_free (fork, EMPTY);
1410#endif 2032#endif
2033#if EV_CLEANUP_ENABLE
2034 array_free (cleanup, EMPTY);
2035#endif
1411 array_free (prepare, EMPTY); 2036 array_free (prepare, EMPTY);
1412 array_free (check, EMPTY); 2037 array_free (check, EMPTY);
1413#if EV_ASYNC_ENABLE 2038#if EV_ASYNC_ENABLE
1414 array_free (async, EMPTY); 2039 array_free (async, EMPTY);
1415#endif 2040#endif
1416 2041
1417 backend = 0; 2042 backend = 0;
2043
2044#if EV_MULTIPLICITY
2045 if (ev_is_default_loop (EV_A))
2046#endif
2047 ev_default_loop_ptr = 0;
2048#if EV_MULTIPLICITY
2049 else
2050 ev_free (EV_A);
2051#endif
1418} 2052}
1419 2053
1420#if EV_USE_INOTIFY 2054#if EV_USE_INOTIFY
1421void inline_size infy_fork (EV_P); 2055inline_size void infy_fork (EV_P);
1422#endif 2056#endif
1423 2057
1424void inline_size 2058inline_size void
1425loop_fork (EV_P) 2059loop_fork (EV_P)
1426{ 2060{
1427#if EV_USE_PORT 2061#if EV_USE_PORT
1428 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2062 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1429#endif 2063#endif
… …
1435#endif 2069#endif
1436#if EV_USE_INOTIFY 2070#if EV_USE_INOTIFY
1437 infy_fork (EV_A); 2071 infy_fork (EV_A);
1438#endif 2072#endif
1439 2073
1440 if (ev_is_active (&pipeev)) 2074 if (ev_is_active (&pipe_w))
1441 { 2075 {
1442 /* this "locks" the handlers against writing to the pipe */ 2076 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1443 /* while we modify the fd vars */
1444 gotsig = 1;
1445#if EV_ASYNC_ENABLE
1446 gotasync = 1;
1447#endif
1448 2077
1449 ev_ref (EV_A); 2078 ev_ref (EV_A);
1450 ev_io_stop (EV_A_ &pipeev); 2079 ev_io_stop (EV_A_ &pipe_w);
1451 2080
1452#if EV_USE_EVENTFD 2081#if EV_USE_EVENTFD
1453 if (evfd >= 0) 2082 if (evfd >= 0)
1454 close (evfd); 2083 close (evfd);
1455#endif 2084#endif
1456 2085
1457 if (evpipe [0] >= 0) 2086 if (evpipe [0] >= 0)
1458 { 2087 {
1459 close (evpipe [0]); 2088 EV_WIN32_CLOSE_FD (evpipe [0]);
1460 close (evpipe [1]); 2089 EV_WIN32_CLOSE_FD (evpipe [1]);
1461 } 2090 }
1462 2091
2092#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1463 evpipe_init (EV_A); 2093 evpipe_init (EV_A);
1464 /* now iterate over everything, in case we missed something */ 2094 /* now iterate over everything, in case we missed something */
1465 pipecb (EV_A_ &pipeev, EV_READ); 2095 pipecb (EV_A_ &pipe_w, EV_READ);
2096#endif
1466 } 2097 }
1467 2098
1468 postfork = 0; 2099 postfork = 0;
1469} 2100}
1470 2101
1471#if EV_MULTIPLICITY 2102#if EV_MULTIPLICITY
1472 2103
1473struct ev_loop * 2104struct ev_loop * ecb_cold
1474ev_loop_new (unsigned int flags) 2105ev_loop_new (unsigned int flags)
1475{ 2106{
1476 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2107 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1477 2108
1478 memset (loop, 0, sizeof (struct ev_loop)); 2109 memset (EV_A, 0, sizeof (struct ev_loop));
1479
1480 loop_init (EV_A_ flags); 2110 loop_init (EV_A_ flags);
1481 2111
1482 if (ev_backend (EV_A)) 2112 if (ev_backend (EV_A))
1483 return loop; 2113 return EV_A;
1484 2114
2115 ev_free (EV_A);
1485 return 0; 2116 return 0;
1486} 2117}
1487 2118
1488void 2119#endif /* multiplicity */
1489ev_loop_destroy (EV_P)
1490{
1491 loop_destroy (EV_A);
1492 ev_free (loop);
1493}
1494
1495void
1496ev_loop_fork (EV_P)
1497{
1498 postfork = 1; /* must be in line with ev_default_fork */
1499}
1500 2120
1501#if EV_VERIFY 2121#if EV_VERIFY
1502static void noinline 2122static void noinline ecb_cold
1503verify_watcher (EV_P_ W w) 2123verify_watcher (EV_P_ W w)
1504{ 2124{
1505 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2125 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1506 2126
1507 if (w->pending) 2127 if (w->pending)
1508 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2128 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1509} 2129}
1510 2130
1511static void noinline 2131static void noinline ecb_cold
1512verify_heap (EV_P_ ANHE *heap, int N) 2132verify_heap (EV_P_ ANHE *heap, int N)
1513{ 2133{
1514 int i; 2134 int i;
1515 2135
1516 for (i = HEAP0; i < N + HEAP0; ++i) 2136 for (i = HEAP0; i < N + HEAP0; ++i)
1517 { 2137 {
1518 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 2138 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1519 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 2139 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1520 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 2140 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1521 2141
1522 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2142 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1523 } 2143 }
1524} 2144}
1525 2145
1526static void noinline 2146static void noinline ecb_cold
1527array_verify (EV_P_ W *ws, int cnt) 2147array_verify (EV_P_ W *ws, int cnt)
1528{ 2148{
1529 while (cnt--) 2149 while (cnt--)
1530 { 2150 {
1531 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2151 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1532 verify_watcher (EV_A_ ws [cnt]); 2152 verify_watcher (EV_A_ ws [cnt]);
1533 } 2153 }
1534} 2154}
1535#endif 2155#endif
1536 2156
1537void 2157#if EV_FEATURE_API
2158void ecb_cold
1538ev_loop_verify (EV_P) 2159ev_verify (EV_P)
1539{ 2160{
1540#if EV_VERIFY 2161#if EV_VERIFY
1541 int i; 2162 int i;
1542 WL w; 2163 WL w;
1543 2164
1544 assert (activecnt >= -1); 2165 assert (activecnt >= -1);
1545 2166
1546 assert (fdchangemax >= fdchangecnt); 2167 assert (fdchangemax >= fdchangecnt);
1547 for (i = 0; i < fdchangecnt; ++i) 2168 for (i = 0; i < fdchangecnt; ++i)
1548 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 2169 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1549 2170
1550 assert (anfdmax >= 0); 2171 assert (anfdmax >= 0);
1551 for (i = 0; i < anfdmax; ++i) 2172 for (i = 0; i < anfdmax; ++i)
1552 for (w = anfds [i].head; w; w = w->next) 2173 for (w = anfds [i].head; w; w = w->next)
1553 { 2174 {
1554 verify_watcher (EV_A_ (W)w); 2175 verify_watcher (EV_A_ (W)w);
1555 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 2176 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1556 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2177 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1557 } 2178 }
1558 2179
1559 assert (timermax >= timercnt); 2180 assert (timermax >= timercnt);
1560 verify_heap (EV_A_ timers, timercnt); 2181 verify_heap (EV_A_ timers, timercnt);
1561 2182
… …
1577#if EV_FORK_ENABLE 2198#if EV_FORK_ENABLE
1578 assert (forkmax >= forkcnt); 2199 assert (forkmax >= forkcnt);
1579 array_verify (EV_A_ (W *)forks, forkcnt); 2200 array_verify (EV_A_ (W *)forks, forkcnt);
1580#endif 2201#endif
1581 2202
2203#if EV_CLEANUP_ENABLE
2204 assert (cleanupmax >= cleanupcnt);
2205 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2206#endif
2207
1582#if EV_ASYNC_ENABLE 2208#if EV_ASYNC_ENABLE
1583 assert (asyncmax >= asynccnt); 2209 assert (asyncmax >= asynccnt);
1584 array_verify (EV_A_ (W *)asyncs, asynccnt); 2210 array_verify (EV_A_ (W *)asyncs, asynccnt);
1585#endif 2211#endif
1586 2212
2213#if EV_PREPARE_ENABLE
1587 assert (preparemax >= preparecnt); 2214 assert (preparemax >= preparecnt);
1588 array_verify (EV_A_ (W *)prepares, preparecnt); 2215 array_verify (EV_A_ (W *)prepares, preparecnt);
2216#endif
1589 2217
2218#if EV_CHECK_ENABLE
1590 assert (checkmax >= checkcnt); 2219 assert (checkmax >= checkcnt);
1591 array_verify (EV_A_ (W *)checks, checkcnt); 2220 array_verify (EV_A_ (W *)checks, checkcnt);
2221#endif
1592 2222
1593# if 0 2223# if 0
2224#if EV_CHILD_ENABLE
1594 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2225 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1595 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2226 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2227#endif
1596# endif 2228# endif
1597#endif 2229#endif
1598} 2230}
1599 2231#endif
1600#endif /* multiplicity */
1601 2232
1602#if EV_MULTIPLICITY 2233#if EV_MULTIPLICITY
1603struct ev_loop * 2234struct ev_loop * ecb_cold
1604ev_default_loop_init (unsigned int flags)
1605#else 2235#else
1606int 2236int
2237#endif
1607ev_default_loop (unsigned int flags) 2238ev_default_loop (unsigned int flags)
1608#endif
1609{ 2239{
1610 if (!ev_default_loop_ptr) 2240 if (!ev_default_loop_ptr)
1611 { 2241 {
1612#if EV_MULTIPLICITY 2242#if EV_MULTIPLICITY
1613 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2243 EV_P = ev_default_loop_ptr = &default_loop_struct;
1614#else 2244#else
1615 ev_default_loop_ptr = 1; 2245 ev_default_loop_ptr = 1;
1616#endif 2246#endif
1617 2247
1618 loop_init (EV_A_ flags); 2248 loop_init (EV_A_ flags);
1619 2249
1620 if (ev_backend (EV_A)) 2250 if (ev_backend (EV_A))
1621 { 2251 {
1622#ifndef _WIN32 2252#if EV_CHILD_ENABLE
1623 ev_signal_init (&childev, childcb, SIGCHLD); 2253 ev_signal_init (&childev, childcb, SIGCHLD);
1624 ev_set_priority (&childev, EV_MAXPRI); 2254 ev_set_priority (&childev, EV_MAXPRI);
1625 ev_signal_start (EV_A_ &childev); 2255 ev_signal_start (EV_A_ &childev);
1626 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2256 ev_unref (EV_A); /* child watcher should not keep loop alive */
1627#endif 2257#endif
… …
1632 2262
1633 return ev_default_loop_ptr; 2263 return ev_default_loop_ptr;
1634} 2264}
1635 2265
1636void 2266void
1637ev_default_destroy (void) 2267ev_loop_fork (EV_P)
1638{ 2268{
1639#if EV_MULTIPLICITY
1640 struct ev_loop *loop = ev_default_loop_ptr;
1641#endif
1642
1643 ev_default_loop_ptr = 0;
1644
1645#ifndef _WIN32
1646 ev_ref (EV_A); /* child watcher */
1647 ev_signal_stop (EV_A_ &childev);
1648#endif
1649
1650 loop_destroy (EV_A);
1651}
1652
1653void
1654ev_default_fork (void)
1655{
1656#if EV_MULTIPLICITY
1657 struct ev_loop *loop = ev_default_loop_ptr;
1658#endif
1659
1660 if (backend)
1661 postfork = 1; /* must be in line with ev_loop_fork */ 2269 postfork = 1; /* must be in line with ev_default_fork */
1662} 2270}
1663 2271
1664/*****************************************************************************/ 2272/*****************************************************************************/
1665 2273
1666void 2274void
1667ev_invoke (EV_P_ void *w, int revents) 2275ev_invoke (EV_P_ void *w, int revents)
1668{ 2276{
1669 EV_CB_INVOKE ((W)w, revents); 2277 EV_CB_INVOKE ((W)w, revents);
1670} 2278}
1671 2279
1672void inline_speed 2280unsigned int
1673call_pending (EV_P) 2281ev_pending_count (EV_P)
2282{
2283 int pri;
2284 unsigned int count = 0;
2285
2286 for (pri = NUMPRI; pri--; )
2287 count += pendingcnt [pri];
2288
2289 return count;
2290}
2291
2292void noinline
2293ev_invoke_pending (EV_P)
1674{ 2294{
1675 int pri; 2295 int pri;
1676 2296
1677 for (pri = NUMPRI; pri--; ) 2297 for (pri = NUMPRI; pri--; )
1678 while (pendingcnt [pri]) 2298 while (pendingcnt [pri])
1679 { 2299 {
1680 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2300 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1681 2301
1682 if (expect_true (p->w))
1683 {
1684 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1685
1686 p->w->pending = 0; 2302 p->w->pending = 0;
1687 EV_CB_INVOKE (p->w, p->events); 2303 EV_CB_INVOKE (p->w, p->events);
1688 EV_FREQUENT_CHECK; 2304 EV_FREQUENT_CHECK;
1689 }
1690 } 2305 }
1691} 2306}
1692 2307
1693#if EV_IDLE_ENABLE 2308#if EV_IDLE_ENABLE
1694void inline_size 2309/* make idle watchers pending. this handles the "call-idle */
2310/* only when higher priorities are idle" logic */
2311inline_size void
1695idle_reify (EV_P) 2312idle_reify (EV_P)
1696{ 2313{
1697 if (expect_false (idleall)) 2314 if (expect_false (idleall))
1698 { 2315 {
1699 int pri; 2316 int pri;
… …
1711 } 2328 }
1712 } 2329 }
1713} 2330}
1714#endif 2331#endif
1715 2332
1716void inline_size 2333/* make timers pending */
2334inline_size void
1717timers_reify (EV_P) 2335timers_reify (EV_P)
1718{ 2336{
1719 EV_FREQUENT_CHECK; 2337 EV_FREQUENT_CHECK;
1720 2338
1721 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2339 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1722 { 2340 {
1723 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2341 do
1724
1725 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1726
1727 /* first reschedule or stop timer */
1728 if (w->repeat)
1729 { 2342 {
2343 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2344
2345 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2346
2347 /* first reschedule or stop timer */
2348 if (w->repeat)
2349 {
1730 ev_at (w) += w->repeat; 2350 ev_at (w) += w->repeat;
1731 if (ev_at (w) < mn_now) 2351 if (ev_at (w) < mn_now)
1732 ev_at (w) = mn_now; 2352 ev_at (w) = mn_now;
1733 2353
1734 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2354 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1735 2355
1736 ANHE_at_cache (timers [HEAP0]); 2356 ANHE_at_cache (timers [HEAP0]);
1737 downheap (timers, timercnt, HEAP0); 2357 downheap (timers, timercnt, HEAP0);
2358 }
2359 else
2360 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2361
2362 EV_FREQUENT_CHECK;
2363 feed_reverse (EV_A_ (W)w);
1738 } 2364 }
1739 else 2365 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1740 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1741 2366
1742 EV_FREQUENT_CHECK; 2367 feed_reverse_done (EV_A_ EV_TIMER);
1743 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1744 } 2368 }
1745} 2369}
1746 2370
1747#if EV_PERIODIC_ENABLE 2371#if EV_PERIODIC_ENABLE
1748void inline_size 2372
2373static void noinline
2374periodic_recalc (EV_P_ ev_periodic *w)
2375{
2376 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2377 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2378
2379 /* the above almost always errs on the low side */
2380 while (at <= ev_rt_now)
2381 {
2382 ev_tstamp nat = at + w->interval;
2383
2384 /* when resolution fails us, we use ev_rt_now */
2385 if (expect_false (nat == at))
2386 {
2387 at = ev_rt_now;
2388 break;
2389 }
2390
2391 at = nat;
2392 }
2393
2394 ev_at (w) = at;
2395}
2396
2397/* make periodics pending */
2398inline_size void
1749periodics_reify (EV_P) 2399periodics_reify (EV_P)
1750{ 2400{
1751 EV_FREQUENT_CHECK; 2401 EV_FREQUENT_CHECK;
1752 2402
1753 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2403 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1754 { 2404 {
1755 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2405 int feed_count = 0;
1756 2406
1757 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2407 do
1758
1759 /* first reschedule or stop timer */
1760 if (w->reschedule_cb)
1761 { 2408 {
2409 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2410
2411 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2412
2413 /* first reschedule or stop timer */
2414 if (w->reschedule_cb)
2415 {
1762 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2416 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1763 2417
1764 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2418 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1765 2419
1766 ANHE_at_cache (periodics [HEAP0]); 2420 ANHE_at_cache (periodics [HEAP0]);
1767 downheap (periodics, periodiccnt, HEAP0); 2421 downheap (periodics, periodiccnt, HEAP0);
2422 }
2423 else if (w->interval)
2424 {
2425 periodic_recalc (EV_A_ w);
2426 ANHE_at_cache (periodics [HEAP0]);
2427 downheap (periodics, periodiccnt, HEAP0);
2428 }
2429 else
2430 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2431
2432 EV_FREQUENT_CHECK;
2433 feed_reverse (EV_A_ (W)w);
1768 } 2434 }
1769 else if (w->interval) 2435 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1770 {
1771 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1772 /* if next trigger time is not sufficiently in the future, put it there */
1773 /* this might happen because of floating point inexactness */
1774 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1775 {
1776 ev_at (w) += w->interval;
1777 2436
1778 /* if interval is unreasonably low we might still have a time in the past */
1779 /* so correct this. this will make the periodic very inexact, but the user */
1780 /* has effectively asked to get triggered more often than possible */
1781 if (ev_at (w) < ev_rt_now)
1782 ev_at (w) = ev_rt_now;
1783 }
1784
1785 ANHE_at_cache (periodics [HEAP0]);
1786 downheap (periodics, periodiccnt, HEAP0);
1787 }
1788 else
1789 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1790
1791 EV_FREQUENT_CHECK;
1792 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2437 feed_reverse_done (EV_A_ EV_PERIODIC);
1793 } 2438 }
1794} 2439}
1795 2440
2441/* simply recalculate all periodics */
2442/* TODO: maybe ensure that at least one event happens when jumping forward? */
1796static void noinline 2443static void noinline ecb_cold
1797periodics_reschedule (EV_P) 2444periodics_reschedule (EV_P)
1798{ 2445{
1799 int i; 2446 int i;
1800 2447
1801 /* adjust periodics after time jump */ 2448 /* adjust periodics after time jump */
… …
1804 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2451 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1805 2452
1806 if (w->reschedule_cb) 2453 if (w->reschedule_cb)
1807 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2454 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1808 else if (w->interval) 2455 else if (w->interval)
1809 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2456 periodic_recalc (EV_A_ w);
1810 2457
1811 ANHE_at_cache (periodics [i]); 2458 ANHE_at_cache (periodics [i]);
1812 } 2459 }
1813 2460
1814 reheap (periodics, periodiccnt); 2461 reheap (periodics, periodiccnt);
1815} 2462}
1816#endif 2463#endif
1817 2464
1818void inline_speed 2465/* adjust all timers by a given offset */
2466static void noinline ecb_cold
2467timers_reschedule (EV_P_ ev_tstamp adjust)
2468{
2469 int i;
2470
2471 for (i = 0; i < timercnt; ++i)
2472 {
2473 ANHE *he = timers + i + HEAP0;
2474 ANHE_w (*he)->at += adjust;
2475 ANHE_at_cache (*he);
2476 }
2477}
2478
2479/* fetch new monotonic and realtime times from the kernel */
2480/* also detect if there was a timejump, and act accordingly */
2481inline_speed void
1819time_update (EV_P_ ev_tstamp max_block) 2482time_update (EV_P_ ev_tstamp max_block)
1820{ 2483{
1821 int i;
1822
1823#if EV_USE_MONOTONIC 2484#if EV_USE_MONOTONIC
1824 if (expect_true (have_monotonic)) 2485 if (expect_true (have_monotonic))
1825 { 2486 {
2487 int i;
1826 ev_tstamp odiff = rtmn_diff; 2488 ev_tstamp odiff = rtmn_diff;
1827 2489
1828 mn_now = get_clock (); 2490 mn_now = get_clock ();
1829 2491
1830 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2492 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1846 * doesn't hurt either as we only do this on time-jumps or 2508 * doesn't hurt either as we only do this on time-jumps or
1847 * in the unlikely event of having been preempted here. 2509 * in the unlikely event of having been preempted here.
1848 */ 2510 */
1849 for (i = 4; --i; ) 2511 for (i = 4; --i; )
1850 { 2512 {
2513 ev_tstamp diff;
1851 rtmn_diff = ev_rt_now - mn_now; 2514 rtmn_diff = ev_rt_now - mn_now;
1852 2515
2516 diff = odiff - rtmn_diff;
2517
1853 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2518 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1854 return; /* all is well */ 2519 return; /* all is well */
1855 2520
1856 ev_rt_now = ev_time (); 2521 ev_rt_now = ev_time ();
1857 mn_now = get_clock (); 2522 mn_now = get_clock ();
1858 now_floor = mn_now; 2523 now_floor = mn_now;
1859 } 2524 }
1860 2525
2526 /* no timer adjustment, as the monotonic clock doesn't jump */
2527 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1861# if EV_PERIODIC_ENABLE 2528# if EV_PERIODIC_ENABLE
1862 periodics_reschedule (EV_A); 2529 periodics_reschedule (EV_A);
1863# endif 2530# endif
1864 /* no timer adjustment, as the monotonic clock doesn't jump */
1865 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1866 } 2531 }
1867 else 2532 else
1868#endif 2533#endif
1869 { 2534 {
1870 ev_rt_now = ev_time (); 2535 ev_rt_now = ev_time ();
1871 2536
1872 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2537 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1873 { 2538 {
2539 /* adjust timers. this is easy, as the offset is the same for all of them */
2540 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1874#if EV_PERIODIC_ENABLE 2541#if EV_PERIODIC_ENABLE
1875 periodics_reschedule (EV_A); 2542 periodics_reschedule (EV_A);
1876#endif 2543#endif
1877 /* adjust timers. this is easy, as the offset is the same for all of them */
1878 for (i = 0; i < timercnt; ++i)
1879 {
1880 ANHE *he = timers + i + HEAP0;
1881 ANHE_w (*he)->at += ev_rt_now - mn_now;
1882 ANHE_at_cache (*he);
1883 }
1884 } 2544 }
1885 2545
1886 mn_now = ev_rt_now; 2546 mn_now = ev_rt_now;
1887 } 2547 }
1888} 2548}
1889 2549
1890void 2550void
1891ev_ref (EV_P)
1892{
1893 ++activecnt;
1894}
1895
1896void
1897ev_unref (EV_P)
1898{
1899 --activecnt;
1900}
1901
1902void
1903ev_now_update (EV_P)
1904{
1905 time_update (EV_A_ 1e100);
1906}
1907
1908static int loop_done;
1909
1910void
1911ev_loop (EV_P_ int flags) 2551ev_run (EV_P_ int flags)
1912{ 2552{
2553#if EV_FEATURE_API
2554 ++loop_depth;
2555#endif
2556
2557 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2558
1913 loop_done = EVUNLOOP_CANCEL; 2559 loop_done = EVBREAK_CANCEL;
1914 2560
1915 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2561 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1916 2562
1917 do 2563 do
1918 { 2564 {
1919#if EV_VERIFY >= 2 2565#if EV_VERIFY >= 2
1920 ev_loop_verify (EV_A); 2566 ev_verify (EV_A);
1921#endif 2567#endif
1922 2568
1923#ifndef _WIN32 2569#ifndef _WIN32
1924 if (expect_false (curpid)) /* penalise the forking check even more */ 2570 if (expect_false (curpid)) /* penalise the forking check even more */
1925 if (expect_false (getpid () != curpid)) 2571 if (expect_false (getpid () != curpid))
… …
1933 /* we might have forked, so queue fork handlers */ 2579 /* we might have forked, so queue fork handlers */
1934 if (expect_false (postfork)) 2580 if (expect_false (postfork))
1935 if (forkcnt) 2581 if (forkcnt)
1936 { 2582 {
1937 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2583 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1938 call_pending (EV_A); 2584 EV_INVOKE_PENDING;
1939 } 2585 }
1940#endif 2586#endif
1941 2587
2588#if EV_PREPARE_ENABLE
1942 /* queue prepare watchers (and execute them) */ 2589 /* queue prepare watchers (and execute them) */
1943 if (expect_false (preparecnt)) 2590 if (expect_false (preparecnt))
1944 { 2591 {
1945 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2592 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1946 call_pending (EV_A); 2593 EV_INVOKE_PENDING;
1947 } 2594 }
2595#endif
1948 2596
1949 if (expect_false (!activecnt)) 2597 if (expect_false (loop_done))
1950 break; 2598 break;
1951 2599
1952 /* we might have forked, so reify kernel state if necessary */ 2600 /* we might have forked, so reify kernel state if necessary */
1953 if (expect_false (postfork)) 2601 if (expect_false (postfork))
1954 loop_fork (EV_A); 2602 loop_fork (EV_A);
… …
1959 /* calculate blocking time */ 2607 /* calculate blocking time */
1960 { 2608 {
1961 ev_tstamp waittime = 0.; 2609 ev_tstamp waittime = 0.;
1962 ev_tstamp sleeptime = 0.; 2610 ev_tstamp sleeptime = 0.;
1963 2611
2612 /* remember old timestamp for io_blocktime calculation */
2613 ev_tstamp prev_mn_now = mn_now;
2614
2615 /* update time to cancel out callback processing overhead */
2616 time_update (EV_A_ 1e100);
2617
2618 /* from now on, we want a pipe-wake-up */
2619 pipe_write_wanted = 1;
2620
2621 ECB_MEMORY_FENCE; /* amke sure pipe_write_wanted is visible before we check for potential skips */
2622
1964 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2623 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1965 { 2624 {
1966 /* update time to cancel out callback processing overhead */
1967 time_update (EV_A_ 1e100);
1968
1969 waittime = MAX_BLOCKTIME; 2625 waittime = MAX_BLOCKTIME;
1970 2626
1971 if (timercnt) 2627 if (timercnt)
1972 { 2628 {
1973 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2629 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1974 if (waittime > to) waittime = to; 2630 if (waittime > to) waittime = to;
1975 } 2631 }
1976 2632
1977#if EV_PERIODIC_ENABLE 2633#if EV_PERIODIC_ENABLE
1978 if (periodiccnt) 2634 if (periodiccnt)
1979 { 2635 {
1980 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2636 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1981 if (waittime > to) waittime = to; 2637 if (waittime > to) waittime = to;
1982 } 2638 }
1983#endif 2639#endif
1984 2640
2641 /* don't let timeouts decrease the waittime below timeout_blocktime */
1985 if (expect_false (waittime < timeout_blocktime)) 2642 if (expect_false (waittime < timeout_blocktime))
1986 waittime = timeout_blocktime; 2643 waittime = timeout_blocktime;
1987 2644
1988 sleeptime = waittime - backend_fudge; 2645 /* at this point, we NEED to wait, so we have to ensure */
2646 /* to pass a minimum nonzero value to the backend */
2647 if (expect_false (waittime < backend_mintime))
2648 waittime = backend_mintime;
1989 2649
2650 /* extra check because io_blocktime is commonly 0 */
1990 if (expect_true (sleeptime > io_blocktime)) 2651 if (expect_false (io_blocktime))
1991 sleeptime = io_blocktime;
1992
1993 if (sleeptime)
1994 { 2652 {
2653 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2654
2655 if (sleeptime > waittime - backend_mintime)
2656 sleeptime = waittime - backend_mintime;
2657
2658 if (expect_true (sleeptime > 0.))
2659 {
1995 ev_sleep (sleeptime); 2660 ev_sleep (sleeptime);
1996 waittime -= sleeptime; 2661 waittime -= sleeptime;
2662 }
1997 } 2663 }
1998 } 2664 }
1999 2665
2666#if EV_FEATURE_API
2000 ++loop_count; 2667 ++loop_count;
2668#endif
2669 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2001 backend_poll (EV_A_ waittime); 2670 backend_poll (EV_A_ waittime);
2671 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2672
2673 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2674
2675 if (pipe_write_skipped)
2676 {
2677 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2678 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2679 }
2680
2002 2681
2003 /* update ev_rt_now, do magic */ 2682 /* update ev_rt_now, do magic */
2004 time_update (EV_A_ waittime + sleeptime); 2683 time_update (EV_A_ waittime + sleeptime);
2005 } 2684 }
2006 2685
… …
2013#if EV_IDLE_ENABLE 2692#if EV_IDLE_ENABLE
2014 /* queue idle watchers unless other events are pending */ 2693 /* queue idle watchers unless other events are pending */
2015 idle_reify (EV_A); 2694 idle_reify (EV_A);
2016#endif 2695#endif
2017 2696
2697#if EV_CHECK_ENABLE
2018 /* queue check watchers, to be executed first */ 2698 /* queue check watchers, to be executed first */
2019 if (expect_false (checkcnt)) 2699 if (expect_false (checkcnt))
2020 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2700 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2701#endif
2021 2702
2022 call_pending (EV_A); 2703 EV_INVOKE_PENDING;
2023 } 2704 }
2024 while (expect_true ( 2705 while (expect_true (
2025 activecnt 2706 activecnt
2026 && !loop_done 2707 && !loop_done
2027 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2708 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2028 )); 2709 ));
2029 2710
2030 if (loop_done == EVUNLOOP_ONE) 2711 if (loop_done == EVBREAK_ONE)
2031 loop_done = EVUNLOOP_CANCEL; 2712 loop_done = EVBREAK_CANCEL;
2713
2714#if EV_FEATURE_API
2715 --loop_depth;
2716#endif
2032} 2717}
2033 2718
2034void 2719void
2035ev_unloop (EV_P_ int how) 2720ev_break (EV_P_ int how)
2036{ 2721{
2037 loop_done = how; 2722 loop_done = how;
2038} 2723}
2039 2724
2725void
2726ev_ref (EV_P)
2727{
2728 ++activecnt;
2729}
2730
2731void
2732ev_unref (EV_P)
2733{
2734 --activecnt;
2735}
2736
2737void
2738ev_now_update (EV_P)
2739{
2740 time_update (EV_A_ 1e100);
2741}
2742
2743void
2744ev_suspend (EV_P)
2745{
2746 ev_now_update (EV_A);
2747}
2748
2749void
2750ev_resume (EV_P)
2751{
2752 ev_tstamp mn_prev = mn_now;
2753
2754 ev_now_update (EV_A);
2755 timers_reschedule (EV_A_ mn_now - mn_prev);
2756#if EV_PERIODIC_ENABLE
2757 /* TODO: really do this? */
2758 periodics_reschedule (EV_A);
2759#endif
2760}
2761
2040/*****************************************************************************/ 2762/*****************************************************************************/
2763/* singly-linked list management, used when the expected list length is short */
2041 2764
2042void inline_size 2765inline_size void
2043wlist_add (WL *head, WL elem) 2766wlist_add (WL *head, WL elem)
2044{ 2767{
2045 elem->next = *head; 2768 elem->next = *head;
2046 *head = elem; 2769 *head = elem;
2047} 2770}
2048 2771
2049void inline_size 2772inline_size void
2050wlist_del (WL *head, WL elem) 2773wlist_del (WL *head, WL elem)
2051{ 2774{
2052 while (*head) 2775 while (*head)
2053 { 2776 {
2054 if (*head == elem) 2777 if (expect_true (*head == elem))
2055 { 2778 {
2056 *head = elem->next; 2779 *head = elem->next;
2057 return; 2780 break;
2058 } 2781 }
2059 2782
2060 head = &(*head)->next; 2783 head = &(*head)->next;
2061 } 2784 }
2062} 2785}
2063 2786
2064void inline_speed 2787/* internal, faster, version of ev_clear_pending */
2788inline_speed void
2065clear_pending (EV_P_ W w) 2789clear_pending (EV_P_ W w)
2066{ 2790{
2067 if (w->pending) 2791 if (w->pending)
2068 { 2792 {
2069 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2793 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2070 w->pending = 0; 2794 w->pending = 0;
2071 } 2795 }
2072} 2796}
2073 2797
2074int 2798int
… …
2078 int pending = w_->pending; 2802 int pending = w_->pending;
2079 2803
2080 if (expect_true (pending)) 2804 if (expect_true (pending))
2081 { 2805 {
2082 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2806 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2807 p->w = (W)&pending_w;
2083 w_->pending = 0; 2808 w_->pending = 0;
2084 p->w = 0;
2085 return p->events; 2809 return p->events;
2086 } 2810 }
2087 else 2811 else
2088 return 0; 2812 return 0;
2089} 2813}
2090 2814
2091void inline_size 2815inline_size void
2092pri_adjust (EV_P_ W w) 2816pri_adjust (EV_P_ W w)
2093{ 2817{
2094 int pri = w->priority; 2818 int pri = ev_priority (w);
2095 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2819 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2096 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2820 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2097 w->priority = pri; 2821 ev_set_priority (w, pri);
2098} 2822}
2099 2823
2100void inline_speed 2824inline_speed void
2101ev_start (EV_P_ W w, int active) 2825ev_start (EV_P_ W w, int active)
2102{ 2826{
2103 pri_adjust (EV_A_ w); 2827 pri_adjust (EV_A_ w);
2104 w->active = active; 2828 w->active = active;
2105 ev_ref (EV_A); 2829 ev_ref (EV_A);
2106} 2830}
2107 2831
2108void inline_size 2832inline_size void
2109ev_stop (EV_P_ W w) 2833ev_stop (EV_P_ W w)
2110{ 2834{
2111 ev_unref (EV_A); 2835 ev_unref (EV_A);
2112 w->active = 0; 2836 w->active = 0;
2113} 2837}
… …
2120 int fd = w->fd; 2844 int fd = w->fd;
2121 2845
2122 if (expect_false (ev_is_active (w))) 2846 if (expect_false (ev_is_active (w)))
2123 return; 2847 return;
2124 2848
2125 assert (("ev_io_start called with negative fd", fd >= 0)); 2849 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2126 assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); 2850 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2127 2851
2128 EV_FREQUENT_CHECK; 2852 EV_FREQUENT_CHECK;
2129 2853
2130 ev_start (EV_A_ (W)w, 1); 2854 ev_start (EV_A_ (W)w, 1);
2131 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2855 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2132 wlist_add (&anfds[fd].head, (WL)w); 2856 wlist_add (&anfds[fd].head, (WL)w);
2133 2857
2134 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2858 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2135 w->events &= ~EV_IOFDSET; 2859 w->events &= ~EV__IOFDSET;
2136 2860
2137 EV_FREQUENT_CHECK; 2861 EV_FREQUENT_CHECK;
2138} 2862}
2139 2863
2140void noinline 2864void noinline
… …
2142{ 2866{
2143 clear_pending (EV_A_ (W)w); 2867 clear_pending (EV_A_ (W)w);
2144 if (expect_false (!ev_is_active (w))) 2868 if (expect_false (!ev_is_active (w)))
2145 return; 2869 return;
2146 2870
2147 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2871 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2148 2872
2149 EV_FREQUENT_CHECK; 2873 EV_FREQUENT_CHECK;
2150 2874
2151 wlist_del (&anfds[w->fd].head, (WL)w); 2875 wlist_del (&anfds[w->fd].head, (WL)w);
2152 ev_stop (EV_A_ (W)w); 2876 ev_stop (EV_A_ (W)w);
2153 2877
2154 fd_change (EV_A_ w->fd, 1); 2878 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2155 2879
2156 EV_FREQUENT_CHECK; 2880 EV_FREQUENT_CHECK;
2157} 2881}
2158 2882
2159void noinline 2883void noinline
… …
2162 if (expect_false (ev_is_active (w))) 2886 if (expect_false (ev_is_active (w)))
2163 return; 2887 return;
2164 2888
2165 ev_at (w) += mn_now; 2889 ev_at (w) += mn_now;
2166 2890
2167 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2891 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2168 2892
2169 EV_FREQUENT_CHECK; 2893 EV_FREQUENT_CHECK;
2170 2894
2171 ++timercnt; 2895 ++timercnt;
2172 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2896 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2175 ANHE_at_cache (timers [ev_active (w)]); 2899 ANHE_at_cache (timers [ev_active (w)]);
2176 upheap (timers, ev_active (w)); 2900 upheap (timers, ev_active (w));
2177 2901
2178 EV_FREQUENT_CHECK; 2902 EV_FREQUENT_CHECK;
2179 2903
2180 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2904 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2181} 2905}
2182 2906
2183void noinline 2907void noinline
2184ev_timer_stop (EV_P_ ev_timer *w) 2908ev_timer_stop (EV_P_ ev_timer *w)
2185{ 2909{
… …
2190 EV_FREQUENT_CHECK; 2914 EV_FREQUENT_CHECK;
2191 2915
2192 { 2916 {
2193 int active = ev_active (w); 2917 int active = ev_active (w);
2194 2918
2195 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2919 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2196 2920
2197 --timercnt; 2921 --timercnt;
2198 2922
2199 if (expect_true (active < timercnt + HEAP0)) 2923 if (expect_true (active < timercnt + HEAP0))
2200 { 2924 {
2201 timers [active] = timers [timercnt + HEAP0]; 2925 timers [active] = timers [timercnt + HEAP0];
2202 adjustheap (timers, timercnt, active); 2926 adjustheap (timers, timercnt, active);
2203 } 2927 }
2204 } 2928 }
2205 2929
2206 EV_FREQUENT_CHECK;
2207
2208 ev_at (w) -= mn_now; 2930 ev_at (w) -= mn_now;
2209 2931
2210 ev_stop (EV_A_ (W)w); 2932 ev_stop (EV_A_ (W)w);
2933
2934 EV_FREQUENT_CHECK;
2211} 2935}
2212 2936
2213void noinline 2937void noinline
2214ev_timer_again (EV_P_ ev_timer *w) 2938ev_timer_again (EV_P_ ev_timer *w)
2215{ 2939{
… …
2233 } 2957 }
2234 2958
2235 EV_FREQUENT_CHECK; 2959 EV_FREQUENT_CHECK;
2236} 2960}
2237 2961
2962ev_tstamp
2963ev_timer_remaining (EV_P_ ev_timer *w)
2964{
2965 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2966}
2967
2238#if EV_PERIODIC_ENABLE 2968#if EV_PERIODIC_ENABLE
2239void noinline 2969void noinline
2240ev_periodic_start (EV_P_ ev_periodic *w) 2970ev_periodic_start (EV_P_ ev_periodic *w)
2241{ 2971{
2242 if (expect_false (ev_is_active (w))) 2972 if (expect_false (ev_is_active (w)))
… …
2244 2974
2245 if (w->reschedule_cb) 2975 if (w->reschedule_cb)
2246 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2976 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2247 else if (w->interval) 2977 else if (w->interval)
2248 { 2978 {
2249 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2979 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2250 /* this formula differs from the one in periodic_reify because we do not always round up */ 2980 periodic_recalc (EV_A_ w);
2251 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2252 } 2981 }
2253 else 2982 else
2254 ev_at (w) = w->offset; 2983 ev_at (w) = w->offset;
2255 2984
2256 EV_FREQUENT_CHECK; 2985 EV_FREQUENT_CHECK;
… …
2262 ANHE_at_cache (periodics [ev_active (w)]); 2991 ANHE_at_cache (periodics [ev_active (w)]);
2263 upheap (periodics, ev_active (w)); 2992 upheap (periodics, ev_active (w));
2264 2993
2265 EV_FREQUENT_CHECK; 2994 EV_FREQUENT_CHECK;
2266 2995
2267 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2996 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2268} 2997}
2269 2998
2270void noinline 2999void noinline
2271ev_periodic_stop (EV_P_ ev_periodic *w) 3000ev_periodic_stop (EV_P_ ev_periodic *w)
2272{ 3001{
… …
2277 EV_FREQUENT_CHECK; 3006 EV_FREQUENT_CHECK;
2278 3007
2279 { 3008 {
2280 int active = ev_active (w); 3009 int active = ev_active (w);
2281 3010
2282 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 3011 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2283 3012
2284 --periodiccnt; 3013 --periodiccnt;
2285 3014
2286 if (expect_true (active < periodiccnt + HEAP0)) 3015 if (expect_true (active < periodiccnt + HEAP0))
2287 { 3016 {
2288 periodics [active] = periodics [periodiccnt + HEAP0]; 3017 periodics [active] = periodics [periodiccnt + HEAP0];
2289 adjustheap (periodics, periodiccnt, active); 3018 adjustheap (periodics, periodiccnt, active);
2290 } 3019 }
2291 } 3020 }
2292 3021
2293 EV_FREQUENT_CHECK;
2294
2295 ev_stop (EV_A_ (W)w); 3022 ev_stop (EV_A_ (W)w);
3023
3024 EV_FREQUENT_CHECK;
2296} 3025}
2297 3026
2298void noinline 3027void noinline
2299ev_periodic_again (EV_P_ ev_periodic *w) 3028ev_periodic_again (EV_P_ ev_periodic *w)
2300{ 3029{
… …
2306 3035
2307#ifndef SA_RESTART 3036#ifndef SA_RESTART
2308# define SA_RESTART 0 3037# define SA_RESTART 0
2309#endif 3038#endif
2310 3039
3040#if EV_SIGNAL_ENABLE
3041
2311void noinline 3042void noinline
2312ev_signal_start (EV_P_ ev_signal *w) 3043ev_signal_start (EV_P_ ev_signal *w)
2313{ 3044{
2314#if EV_MULTIPLICITY
2315 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2316#endif
2317 if (expect_false (ev_is_active (w))) 3045 if (expect_false (ev_is_active (w)))
2318 return; 3046 return;
2319 3047
2320 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3048 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2321 3049
2322 evpipe_init (EV_A); 3050#if EV_MULTIPLICITY
3051 assert (("libev: a signal must not be attached to two different loops",
3052 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2323 3053
2324 EV_FREQUENT_CHECK; 3054 signals [w->signum - 1].loop = EV_A;
3055#endif
2325 3056
3057 EV_FREQUENT_CHECK;
3058
3059#if EV_USE_SIGNALFD
3060 if (sigfd == -2)
2326 { 3061 {
2327#ifndef _WIN32 3062 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2328 sigset_t full, prev; 3063 if (sigfd < 0 && errno == EINVAL)
2329 sigfillset (&full); 3064 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2330 sigprocmask (SIG_SETMASK, &full, &prev);
2331#endif
2332 3065
2333 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3066 if (sigfd >= 0)
3067 {
3068 fd_intern (sigfd); /* doing it twice will not hurt */
2334 3069
2335#ifndef _WIN32 3070 sigemptyset (&sigfd_set);
2336 sigprocmask (SIG_SETMASK, &prev, 0); 3071
2337#endif 3072 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3073 ev_set_priority (&sigfd_w, EV_MAXPRI);
3074 ev_io_start (EV_A_ &sigfd_w);
3075 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3076 }
2338 } 3077 }
3078
3079 if (sigfd >= 0)
3080 {
3081 /* TODO: check .head */
3082 sigaddset (&sigfd_set, w->signum);
3083 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3084
3085 signalfd (sigfd, &sigfd_set, 0);
3086 }
3087#endif
2339 3088
2340 ev_start (EV_A_ (W)w, 1); 3089 ev_start (EV_A_ (W)w, 1);
2341 wlist_add (&signals [w->signum - 1].head, (WL)w); 3090 wlist_add (&signals [w->signum - 1].head, (WL)w);
2342 3091
2343 if (!((WL)w)->next) 3092 if (!((WL)w)->next)
3093# if EV_USE_SIGNALFD
3094 if (sigfd < 0) /*TODO*/
3095# endif
2344 { 3096 {
2345#if _WIN32 3097# ifdef _WIN32
3098 evpipe_init (EV_A);
3099
2346 signal (w->signum, ev_sighandler); 3100 signal (w->signum, ev_sighandler);
2347#else 3101# else
2348 struct sigaction sa; 3102 struct sigaction sa;
3103
3104 evpipe_init (EV_A);
3105
2349 sa.sa_handler = ev_sighandler; 3106 sa.sa_handler = ev_sighandler;
2350 sigfillset (&sa.sa_mask); 3107 sigfillset (&sa.sa_mask);
2351 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3108 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2352 sigaction (w->signum, &sa, 0); 3109 sigaction (w->signum, &sa, 0);
3110
3111 if (origflags & EVFLAG_NOSIGMASK)
3112 {
3113 sigemptyset (&sa.sa_mask);
3114 sigaddset (&sa.sa_mask, w->signum);
3115 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3116 }
2353#endif 3117#endif
2354 } 3118 }
2355 3119
2356 EV_FREQUENT_CHECK; 3120 EV_FREQUENT_CHECK;
2357} 3121}
2358 3122
2359void noinline 3123void noinline
… …
2367 3131
2368 wlist_del (&signals [w->signum - 1].head, (WL)w); 3132 wlist_del (&signals [w->signum - 1].head, (WL)w);
2369 ev_stop (EV_A_ (W)w); 3133 ev_stop (EV_A_ (W)w);
2370 3134
2371 if (!signals [w->signum - 1].head) 3135 if (!signals [w->signum - 1].head)
3136 {
3137#if EV_MULTIPLICITY
3138 signals [w->signum - 1].loop = 0; /* unattach from signal */
3139#endif
3140#if EV_USE_SIGNALFD
3141 if (sigfd >= 0)
3142 {
3143 sigset_t ss;
3144
3145 sigemptyset (&ss);
3146 sigaddset (&ss, w->signum);
3147 sigdelset (&sigfd_set, w->signum);
3148
3149 signalfd (sigfd, &sigfd_set, 0);
3150 sigprocmask (SIG_UNBLOCK, &ss, 0);
3151 }
3152 else
3153#endif
2372 signal (w->signum, SIG_DFL); 3154 signal (w->signum, SIG_DFL);
3155 }
2373 3156
2374 EV_FREQUENT_CHECK; 3157 EV_FREQUENT_CHECK;
2375} 3158}
3159
3160#endif
3161
3162#if EV_CHILD_ENABLE
2376 3163
2377void 3164void
2378ev_child_start (EV_P_ ev_child *w) 3165ev_child_start (EV_P_ ev_child *w)
2379{ 3166{
2380#if EV_MULTIPLICITY 3167#if EV_MULTIPLICITY
2381 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3168 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2382#endif 3169#endif
2383 if (expect_false (ev_is_active (w))) 3170 if (expect_false (ev_is_active (w)))
2384 return; 3171 return;
2385 3172
2386 EV_FREQUENT_CHECK; 3173 EV_FREQUENT_CHECK;
2387 3174
2388 ev_start (EV_A_ (W)w, 1); 3175 ev_start (EV_A_ (W)w, 1);
2389 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3176 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2390 3177
2391 EV_FREQUENT_CHECK; 3178 EV_FREQUENT_CHECK;
2392} 3179}
2393 3180
2394void 3181void
… …
2398 if (expect_false (!ev_is_active (w))) 3185 if (expect_false (!ev_is_active (w)))
2399 return; 3186 return;
2400 3187
2401 EV_FREQUENT_CHECK; 3188 EV_FREQUENT_CHECK;
2402 3189
2403 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3190 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2404 ev_stop (EV_A_ (W)w); 3191 ev_stop (EV_A_ (W)w);
2405 3192
2406 EV_FREQUENT_CHECK; 3193 EV_FREQUENT_CHECK;
2407} 3194}
3195
3196#endif
2408 3197
2409#if EV_STAT_ENABLE 3198#if EV_STAT_ENABLE
2410 3199
2411# ifdef _WIN32 3200# ifdef _WIN32
2412# undef lstat 3201# undef lstat
2413# define lstat(a,b) _stati64 (a,b) 3202# define lstat(a,b) _stati64 (a,b)
2414# endif 3203# endif
2415 3204
2416#define DEF_STAT_INTERVAL 5.0074891 3205#define DEF_STAT_INTERVAL 5.0074891
3206#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2417#define MIN_STAT_INTERVAL 0.1074891 3207#define MIN_STAT_INTERVAL 0.1074891
2418 3208
2419static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3209static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2420 3210
2421#if EV_USE_INOTIFY 3211#if EV_USE_INOTIFY
2422# define EV_INOTIFY_BUFSIZE 8192 3212
3213/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3214# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2423 3215
2424static void noinline 3216static void noinline
2425infy_add (EV_P_ ev_stat *w) 3217infy_add (EV_P_ ev_stat *w)
2426{ 3218{
2427 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); 3219 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);
2428 3220
2429 if (w->wd < 0) 3221 if (w->wd >= 0)
3222 {
3223 struct statfs sfs;
3224
3225 /* now local changes will be tracked by inotify, but remote changes won't */
3226 /* unless the filesystem is known to be local, we therefore still poll */
3227 /* also do poll on <2.6.25, but with normal frequency */
3228
3229 if (!fs_2625)
3230 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3231 else if (!statfs (w->path, &sfs)
3232 && (sfs.f_type == 0x1373 /* devfs */
3233 || sfs.f_type == 0xEF53 /* ext2/3 */
3234 || sfs.f_type == 0x3153464a /* jfs */
3235 || sfs.f_type == 0x52654973 /* reiser3 */
3236 || sfs.f_type == 0x01021994 /* tempfs */
3237 || sfs.f_type == 0x58465342 /* xfs */))
3238 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3239 else
3240 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2430 { 3241 }
2431 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3242 else
3243 {
3244 /* can't use inotify, continue to stat */
3245 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2432 3246
2433 /* monitor some parent directory for speedup hints */ 3247 /* if path is not there, monitor some parent directory for speedup hints */
2434 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3248 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2435 /* but an efficiency issue only */ 3249 /* but an efficiency issue only */
2436 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3250 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2437 { 3251 {
2438 char path [4096]; 3252 char path [4096];
2439 strcpy (path, w->path); 3253 strcpy (path, w->path);
… …
2443 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3257 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2444 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3258 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2445 3259
2446 char *pend = strrchr (path, '/'); 3260 char *pend = strrchr (path, '/');
2447 3261
2448 if (!pend) 3262 if (!pend || pend == path)
2449 break; /* whoops, no '/', complain to your admin */ 3263 break;
2450 3264
2451 *pend = 0; 3265 *pend = 0;
2452 w->wd = inotify_add_watch (fs_fd, path, mask); 3266 w->wd = inotify_add_watch (fs_fd, path, mask);
2453 } 3267 }
2454 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3268 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2455 } 3269 }
2456 } 3270 }
2457 else
2458 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2459 3271
2460 if (w->wd >= 0) 3272 if (w->wd >= 0)
2461 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3273 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3274
3275 /* now re-arm timer, if required */
3276 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3277 ev_timer_again (EV_A_ &w->timer);
3278 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2462} 3279}
2463 3280
2464static void noinline 3281static void noinline
2465infy_del (EV_P_ ev_stat *w) 3282infy_del (EV_P_ ev_stat *w)
2466{ 3283{
… …
2469 3286
2470 if (wd < 0) 3287 if (wd < 0)
2471 return; 3288 return;
2472 3289
2473 w->wd = -2; 3290 w->wd = -2;
2474 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3291 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2475 wlist_del (&fs_hash [slot].head, (WL)w); 3292 wlist_del (&fs_hash [slot].head, (WL)w);
2476 3293
2477 /* remove this watcher, if others are watching it, they will rearm */ 3294 /* remove this watcher, if others are watching it, they will rearm */
2478 inotify_rm_watch (fs_fd, wd); 3295 inotify_rm_watch (fs_fd, wd);
2479} 3296}
… …
2481static void noinline 3298static void noinline
2482infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3299infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2483{ 3300{
2484 if (slot < 0) 3301 if (slot < 0)
2485 /* overflow, need to check for all hash slots */ 3302 /* overflow, need to check for all hash slots */
2486 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3303 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2487 infy_wd (EV_A_ slot, wd, ev); 3304 infy_wd (EV_A_ slot, wd, ev);
2488 else 3305 else
2489 { 3306 {
2490 WL w_; 3307 WL w_;
2491 3308
2492 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3309 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2493 { 3310 {
2494 ev_stat *w = (ev_stat *)w_; 3311 ev_stat *w = (ev_stat *)w_;
2495 w_ = w_->next; /* lets us remove this watcher and all before it */ 3312 w_ = w_->next; /* lets us remove this watcher and all before it */
2496 3313
2497 if (w->wd == wd || wd == -1) 3314 if (w->wd == wd || wd == -1)
2498 { 3315 {
2499 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3316 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2500 { 3317 {
3318 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2501 w->wd = -1; 3319 w->wd = -1;
2502 infy_add (EV_A_ w); /* re-add, no matter what */ 3320 infy_add (EV_A_ w); /* re-add, no matter what */
2503 } 3321 }
2504 3322
2505 stat_timer_cb (EV_A_ &w->timer, 0); 3323 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2510 3328
2511static void 3329static void
2512infy_cb (EV_P_ ev_io *w, int revents) 3330infy_cb (EV_P_ ev_io *w, int revents)
2513{ 3331{
2514 char buf [EV_INOTIFY_BUFSIZE]; 3332 char buf [EV_INOTIFY_BUFSIZE];
2515 struct inotify_event *ev = (struct inotify_event *)buf;
2516 int ofs; 3333 int ofs;
2517 int len = read (fs_fd, buf, sizeof (buf)); 3334 int len = read (fs_fd, buf, sizeof (buf));
2518 3335
2519 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3336 for (ofs = 0; ofs < len; )
3337 {
3338 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2520 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3339 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3340 ofs += sizeof (struct inotify_event) + ev->len;
3341 }
2521} 3342}
2522 3343
2523void inline_size 3344inline_size void ecb_cold
2524infy_init (EV_P) 3345ev_check_2625 (EV_P)
2525{ 3346{
2526 if (fs_fd != -2)
2527 return;
2528
2529 /* kernels < 2.6.25 are borked 3347 /* kernels < 2.6.25 are borked
2530 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3348 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2531 */ 3349 */
2532 { 3350 if (ev_linux_version () < 0x020619)
2533 struct utsname buf; 3351 return;
2534 int major, minor, micro;
2535 3352
3353 fs_2625 = 1;
3354}
3355
3356inline_size int
3357infy_newfd (void)
3358{
3359#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3360 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3361 if (fd >= 0)
3362 return fd;
3363#endif
3364 return inotify_init ();
3365}
3366
3367inline_size void
3368infy_init (EV_P)
3369{
3370 if (fs_fd != -2)
3371 return;
3372
2536 fs_fd = -1; 3373 fs_fd = -1;
2537 3374
2538 if (uname (&buf)) 3375 ev_check_2625 (EV_A);
2539 return;
2540 3376
2541 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2542 return;
2543
2544 if (major < 2
2545 || (major == 2 && minor < 6)
2546 || (major == 2 && minor == 6 && micro < 25))
2547 return;
2548 }
2549
2550 fs_fd = inotify_init (); 3377 fs_fd = infy_newfd ();
2551 3378
2552 if (fs_fd >= 0) 3379 if (fs_fd >= 0)
2553 { 3380 {
3381 fd_intern (fs_fd);
2554 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3382 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2555 ev_set_priority (&fs_w, EV_MAXPRI); 3383 ev_set_priority (&fs_w, EV_MAXPRI);
2556 ev_io_start (EV_A_ &fs_w); 3384 ev_io_start (EV_A_ &fs_w);
3385 ev_unref (EV_A);
2557 } 3386 }
2558} 3387}
2559 3388
2560void inline_size 3389inline_size void
2561infy_fork (EV_P) 3390infy_fork (EV_P)
2562{ 3391{
2563 int slot; 3392 int slot;
2564 3393
2565 if (fs_fd < 0) 3394 if (fs_fd < 0)
2566 return; 3395 return;
2567 3396
3397 ev_ref (EV_A);
3398 ev_io_stop (EV_A_ &fs_w);
2568 close (fs_fd); 3399 close (fs_fd);
2569 fs_fd = inotify_init (); 3400 fs_fd = infy_newfd ();
2570 3401
3402 if (fs_fd >= 0)
3403 {
3404 fd_intern (fs_fd);
3405 ev_io_set (&fs_w, fs_fd, EV_READ);
3406 ev_io_start (EV_A_ &fs_w);
3407 ev_unref (EV_A);
3408 }
3409
2571 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3410 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2572 { 3411 {
2573 WL w_ = fs_hash [slot].head; 3412 WL w_ = fs_hash [slot].head;
2574 fs_hash [slot].head = 0; 3413 fs_hash [slot].head = 0;
2575 3414
2576 while (w_) 3415 while (w_)
… …
2581 w->wd = -1; 3420 w->wd = -1;
2582 3421
2583 if (fs_fd >= 0) 3422 if (fs_fd >= 0)
2584 infy_add (EV_A_ w); /* re-add, no matter what */ 3423 infy_add (EV_A_ w); /* re-add, no matter what */
2585 else 3424 else
3425 {
3426 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3427 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2586 ev_timer_start (EV_A_ &w->timer); 3428 ev_timer_again (EV_A_ &w->timer);
3429 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3430 }
2587 } 3431 }
2588 } 3432 }
2589} 3433}
2590 3434
2591#endif 3435#endif
… …
2608static void noinline 3452static void noinline
2609stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3453stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2610{ 3454{
2611 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3455 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2612 3456
2613 /* we copy this here each the time so that */ 3457 ev_statdata prev = w->attr;
2614 /* prev has the old value when the callback gets invoked */
2615 w->prev = w->attr;
2616 ev_stat_stat (EV_A_ w); 3458 ev_stat_stat (EV_A_ w);
2617 3459
2618 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3460 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2619 if ( 3461 if (
2620 w->prev.st_dev != w->attr.st_dev 3462 prev.st_dev != w->attr.st_dev
2621 || w->prev.st_ino != w->attr.st_ino 3463 || prev.st_ino != w->attr.st_ino
2622 || w->prev.st_mode != w->attr.st_mode 3464 || prev.st_mode != w->attr.st_mode
2623 || w->prev.st_nlink != w->attr.st_nlink 3465 || prev.st_nlink != w->attr.st_nlink
2624 || w->prev.st_uid != w->attr.st_uid 3466 || prev.st_uid != w->attr.st_uid
2625 || w->prev.st_gid != w->attr.st_gid 3467 || prev.st_gid != w->attr.st_gid
2626 || w->prev.st_rdev != w->attr.st_rdev 3468 || prev.st_rdev != w->attr.st_rdev
2627 || w->prev.st_size != w->attr.st_size 3469 || prev.st_size != w->attr.st_size
2628 || w->prev.st_atime != w->attr.st_atime 3470 || prev.st_atime != w->attr.st_atime
2629 || w->prev.st_mtime != w->attr.st_mtime 3471 || prev.st_mtime != w->attr.st_mtime
2630 || w->prev.st_ctime != w->attr.st_ctime 3472 || prev.st_ctime != w->attr.st_ctime
2631 ) { 3473 ) {
3474 /* we only update w->prev on actual differences */
3475 /* in case we test more often than invoke the callback, */
3476 /* to ensure that prev is always different to attr */
3477 w->prev = prev;
3478
2632 #if EV_USE_INOTIFY 3479 #if EV_USE_INOTIFY
2633 if (fs_fd >= 0) 3480 if (fs_fd >= 0)
2634 { 3481 {
2635 infy_del (EV_A_ w); 3482 infy_del (EV_A_ w);
2636 infy_add (EV_A_ w); 3483 infy_add (EV_A_ w);
… …
2646ev_stat_start (EV_P_ ev_stat *w) 3493ev_stat_start (EV_P_ ev_stat *w)
2647{ 3494{
2648 if (expect_false (ev_is_active (w))) 3495 if (expect_false (ev_is_active (w)))
2649 return; 3496 return;
2650 3497
2651 /* since we use memcmp, we need to clear any padding data etc. */
2652 memset (&w->prev, 0, sizeof (ev_statdata));
2653 memset (&w->attr, 0, sizeof (ev_statdata));
2654
2655 ev_stat_stat (EV_A_ w); 3498 ev_stat_stat (EV_A_ w);
2656 3499
3500 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2657 if (w->interval < MIN_STAT_INTERVAL) 3501 w->interval = MIN_STAT_INTERVAL;
2658 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2659 3502
2660 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3503 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2661 ev_set_priority (&w->timer, ev_priority (w)); 3504 ev_set_priority (&w->timer, ev_priority (w));
2662 3505
2663#if EV_USE_INOTIFY 3506#if EV_USE_INOTIFY
2664 infy_init (EV_A); 3507 infy_init (EV_A);
2665 3508
2666 if (fs_fd >= 0) 3509 if (fs_fd >= 0)
2667 infy_add (EV_A_ w); 3510 infy_add (EV_A_ w);
2668 else 3511 else
2669#endif 3512#endif
3513 {
2670 ev_timer_start (EV_A_ &w->timer); 3514 ev_timer_again (EV_A_ &w->timer);
3515 ev_unref (EV_A);
3516 }
2671 3517
2672 ev_start (EV_A_ (W)w, 1); 3518 ev_start (EV_A_ (W)w, 1);
2673 3519
2674 EV_FREQUENT_CHECK; 3520 EV_FREQUENT_CHECK;
2675} 3521}
… …
2684 EV_FREQUENT_CHECK; 3530 EV_FREQUENT_CHECK;
2685 3531
2686#if EV_USE_INOTIFY 3532#if EV_USE_INOTIFY
2687 infy_del (EV_A_ w); 3533 infy_del (EV_A_ w);
2688#endif 3534#endif
3535
3536 if (ev_is_active (&w->timer))
3537 {
3538 ev_ref (EV_A);
2689 ev_timer_stop (EV_A_ &w->timer); 3539 ev_timer_stop (EV_A_ &w->timer);
3540 }
2690 3541
2691 ev_stop (EV_A_ (W)w); 3542 ev_stop (EV_A_ (W)w);
2692 3543
2693 EV_FREQUENT_CHECK; 3544 EV_FREQUENT_CHECK;
2694} 3545}
… …
2739 3590
2740 EV_FREQUENT_CHECK; 3591 EV_FREQUENT_CHECK;
2741} 3592}
2742#endif 3593#endif
2743 3594
3595#if EV_PREPARE_ENABLE
2744void 3596void
2745ev_prepare_start (EV_P_ ev_prepare *w) 3597ev_prepare_start (EV_P_ ev_prepare *w)
2746{ 3598{
2747 if (expect_false (ev_is_active (w))) 3599 if (expect_false (ev_is_active (w)))
2748 return; 3600 return;
… …
2774 3626
2775 ev_stop (EV_A_ (W)w); 3627 ev_stop (EV_A_ (W)w);
2776 3628
2777 EV_FREQUENT_CHECK; 3629 EV_FREQUENT_CHECK;
2778} 3630}
3631#endif
2779 3632
3633#if EV_CHECK_ENABLE
2780void 3634void
2781ev_check_start (EV_P_ ev_check *w) 3635ev_check_start (EV_P_ ev_check *w)
2782{ 3636{
2783 if (expect_false (ev_is_active (w))) 3637 if (expect_false (ev_is_active (w)))
2784 return; 3638 return;
… …
2810 3664
2811 ev_stop (EV_A_ (W)w); 3665 ev_stop (EV_A_ (W)w);
2812 3666
2813 EV_FREQUENT_CHECK; 3667 EV_FREQUENT_CHECK;
2814} 3668}
3669#endif
2815 3670
2816#if EV_EMBED_ENABLE 3671#if EV_EMBED_ENABLE
2817void noinline 3672void noinline
2818ev_embed_sweep (EV_P_ ev_embed *w) 3673ev_embed_sweep (EV_P_ ev_embed *w)
2819{ 3674{
2820 ev_loop (w->other, EVLOOP_NONBLOCK); 3675 ev_run (w->other, EVRUN_NOWAIT);
2821} 3676}
2822 3677
2823static void 3678static void
2824embed_io_cb (EV_P_ ev_io *io, int revents) 3679embed_io_cb (EV_P_ ev_io *io, int revents)
2825{ 3680{
2826 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3681 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2827 3682
2828 if (ev_cb (w)) 3683 if (ev_cb (w))
2829 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3684 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2830 else 3685 else
2831 ev_loop (w->other, EVLOOP_NONBLOCK); 3686 ev_run (w->other, EVRUN_NOWAIT);
2832} 3687}
2833 3688
2834static void 3689static void
2835embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3690embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2836{ 3691{
2837 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3692 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2838 3693
2839 { 3694 {
2840 struct ev_loop *loop = w->other; 3695 EV_P = w->other;
2841 3696
2842 while (fdchangecnt) 3697 while (fdchangecnt)
2843 { 3698 {
2844 fd_reify (EV_A); 3699 fd_reify (EV_A);
2845 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3700 ev_run (EV_A_ EVRUN_NOWAIT);
2846 } 3701 }
2847 } 3702 }
2848} 3703}
2849 3704
2850static void 3705static void
2851embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3706embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2852{ 3707{
2853 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3708 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2854 3709
3710 ev_embed_stop (EV_A_ w);
3711
2855 { 3712 {
2856 struct ev_loop *loop = w->other; 3713 EV_P = w->other;
2857 3714
2858 ev_loop_fork (EV_A); 3715 ev_loop_fork (EV_A);
3716 ev_run (EV_A_ EVRUN_NOWAIT);
2859 } 3717 }
3718
3719 ev_embed_start (EV_A_ w);
2860} 3720}
2861 3721
2862#if 0 3722#if 0
2863static void 3723static void
2864embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3724embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2872{ 3732{
2873 if (expect_false (ev_is_active (w))) 3733 if (expect_false (ev_is_active (w)))
2874 return; 3734 return;
2875 3735
2876 { 3736 {
2877 struct ev_loop *loop = w->other; 3737 EV_P = w->other;
2878 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3738 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2879 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3739 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2880 } 3740 }
2881 3741
2882 EV_FREQUENT_CHECK; 3742 EV_FREQUENT_CHECK;
2883 3743
… …
2909 3769
2910 ev_io_stop (EV_A_ &w->io); 3770 ev_io_stop (EV_A_ &w->io);
2911 ev_prepare_stop (EV_A_ &w->prepare); 3771 ev_prepare_stop (EV_A_ &w->prepare);
2912 ev_fork_stop (EV_A_ &w->fork); 3772 ev_fork_stop (EV_A_ &w->fork);
2913 3773
3774 ev_stop (EV_A_ (W)w);
3775
2914 EV_FREQUENT_CHECK; 3776 EV_FREQUENT_CHECK;
2915} 3777}
2916#endif 3778#endif
2917 3779
2918#if EV_FORK_ENABLE 3780#if EV_FORK_ENABLE
… …
2951 3813
2952 EV_FREQUENT_CHECK; 3814 EV_FREQUENT_CHECK;
2953} 3815}
2954#endif 3816#endif
2955 3817
3818#if EV_CLEANUP_ENABLE
3819void
3820ev_cleanup_start (EV_P_ ev_cleanup *w)
3821{
3822 if (expect_false (ev_is_active (w)))
3823 return;
3824
3825 EV_FREQUENT_CHECK;
3826
3827 ev_start (EV_A_ (W)w, ++cleanupcnt);
3828 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3829 cleanups [cleanupcnt - 1] = w;
3830
3831 /* cleanup watchers should never keep a refcount on the loop */
3832 ev_unref (EV_A);
3833 EV_FREQUENT_CHECK;
3834}
3835
3836void
3837ev_cleanup_stop (EV_P_ ev_cleanup *w)
3838{
3839 clear_pending (EV_A_ (W)w);
3840 if (expect_false (!ev_is_active (w)))
3841 return;
3842
3843 EV_FREQUENT_CHECK;
3844 ev_ref (EV_A);
3845
3846 {
3847 int active = ev_active (w);
3848
3849 cleanups [active - 1] = cleanups [--cleanupcnt];
3850 ev_active (cleanups [active - 1]) = active;
3851 }
3852
3853 ev_stop (EV_A_ (W)w);
3854
3855 EV_FREQUENT_CHECK;
3856}
3857#endif
3858
2956#if EV_ASYNC_ENABLE 3859#if EV_ASYNC_ENABLE
2957void 3860void
2958ev_async_start (EV_P_ ev_async *w) 3861ev_async_start (EV_P_ ev_async *w)
2959{ 3862{
2960 if (expect_false (ev_is_active (w))) 3863 if (expect_false (ev_is_active (w)))
2961 return; 3864 return;
2962 3865
3866 w->sent = 0;
3867
2963 evpipe_init (EV_A); 3868 evpipe_init (EV_A);
2964 3869
2965 EV_FREQUENT_CHECK; 3870 EV_FREQUENT_CHECK;
2966 3871
2967 ev_start (EV_A_ (W)w, ++asynccnt); 3872 ev_start (EV_A_ (W)w, ++asynccnt);
… …
2994 3899
2995void 3900void
2996ev_async_send (EV_P_ ev_async *w) 3901ev_async_send (EV_P_ ev_async *w)
2997{ 3902{
2998 w->sent = 1; 3903 w->sent = 1;
2999 evpipe_write (EV_A_ &gotasync); 3904 evpipe_write (EV_A_ &async_pending);
3000} 3905}
3001#endif 3906#endif
3002 3907
3003/*****************************************************************************/ 3908/*****************************************************************************/
3004 3909
… …
3044{ 3949{
3045 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3950 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3046 3951
3047 if (expect_false (!once)) 3952 if (expect_false (!once))
3048 { 3953 {
3049 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3954 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3050 return; 3955 return;
3051 } 3956 }
3052 3957
3053 once->cb = cb; 3958 once->cb = cb;
3054 once->arg = arg; 3959 once->arg = arg;
… …
3066 ev_timer_set (&once->to, timeout, 0.); 3971 ev_timer_set (&once->to, timeout, 0.);
3067 ev_timer_start (EV_A_ &once->to); 3972 ev_timer_start (EV_A_ &once->to);
3068 } 3973 }
3069} 3974}
3070 3975
3976/*****************************************************************************/
3977
3978#if EV_WALK_ENABLE
3979void ecb_cold
3980ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3981{
3982 int i, j;
3983 ev_watcher_list *wl, *wn;
3984
3985 if (types & (EV_IO | EV_EMBED))
3986 for (i = 0; i < anfdmax; ++i)
3987 for (wl = anfds [i].head; wl; )
3988 {
3989 wn = wl->next;
3990
3991#if EV_EMBED_ENABLE
3992 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3993 {
3994 if (types & EV_EMBED)
3995 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3996 }
3997 else
3998#endif
3999#if EV_USE_INOTIFY
4000 if (ev_cb ((ev_io *)wl) == infy_cb)
4001 ;
4002 else
4003#endif
4004 if ((ev_io *)wl != &pipe_w)
4005 if (types & EV_IO)
4006 cb (EV_A_ EV_IO, wl);
4007
4008 wl = wn;
4009 }
4010
4011 if (types & (EV_TIMER | EV_STAT))
4012 for (i = timercnt + HEAP0; i-- > HEAP0; )
4013#if EV_STAT_ENABLE
4014 /*TODO: timer is not always active*/
4015 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
4016 {
4017 if (types & EV_STAT)
4018 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
4019 }
4020 else
4021#endif
4022 if (types & EV_TIMER)
4023 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
4024
4025#if EV_PERIODIC_ENABLE
4026 if (types & EV_PERIODIC)
4027 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4028 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4029#endif
4030
4031#if EV_IDLE_ENABLE
4032 if (types & EV_IDLE)
4033 for (j = NUMPRI; i--; )
4034 for (i = idlecnt [j]; i--; )
4035 cb (EV_A_ EV_IDLE, idles [j][i]);
4036#endif
4037
4038#if EV_FORK_ENABLE
4039 if (types & EV_FORK)
4040 for (i = forkcnt; i--; )
4041 if (ev_cb (forks [i]) != embed_fork_cb)
4042 cb (EV_A_ EV_FORK, forks [i]);
4043#endif
4044
4045#if EV_ASYNC_ENABLE
4046 if (types & EV_ASYNC)
4047 for (i = asynccnt; i--; )
4048 cb (EV_A_ EV_ASYNC, asyncs [i]);
4049#endif
4050
4051#if EV_PREPARE_ENABLE
4052 if (types & EV_PREPARE)
4053 for (i = preparecnt; i--; )
4054# if EV_EMBED_ENABLE
4055 if (ev_cb (prepares [i]) != embed_prepare_cb)
4056# endif
4057 cb (EV_A_ EV_PREPARE, prepares [i]);
4058#endif
4059
4060#if EV_CHECK_ENABLE
4061 if (types & EV_CHECK)
4062 for (i = checkcnt; i--; )
4063 cb (EV_A_ EV_CHECK, checks [i]);
4064#endif
4065
4066#if EV_SIGNAL_ENABLE
4067 if (types & EV_SIGNAL)
4068 for (i = 0; i < EV_NSIG - 1; ++i)
4069 for (wl = signals [i].head; wl; )
4070 {
4071 wn = wl->next;
4072 cb (EV_A_ EV_SIGNAL, wl);
4073 wl = wn;
4074 }
4075#endif
4076
4077#if EV_CHILD_ENABLE
4078 if (types & EV_CHILD)
4079 for (i = (EV_PID_HASHSIZE); i--; )
4080 for (wl = childs [i]; wl; )
4081 {
4082 wn = wl->next;
4083 cb (EV_A_ EV_CHILD, wl);
4084 wl = wn;
4085 }
4086#endif
4087/* EV_STAT 0x00001000 /* stat data changed */
4088/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4089}
4090#endif
4091
3071#if EV_MULTIPLICITY 4092#if EV_MULTIPLICITY
3072 #include "ev_wrap.h" 4093 #include "ev_wrap.h"
3073#endif 4094#endif
3074 4095
3075#ifdef __cplusplus 4096EV_CPP(})
3076}
3077#endif
3078 4097

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