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Comparing libev/ev.c (file contents):
Revision 1.250 by root, Thu May 22 02:44:57 2008 UTC vs.
Revision 1.383 by root, Wed Jul 20 00:40:14 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>
158#else 194#else
195# include <io.h>
159# define WIN32_LEAN_AND_MEAN 196# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 197# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
163# endif 200# endif
201# undef EV_AVOID_STDIO
164#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
165 211
166/* 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 */
167 213
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
253
168#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else
169# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
259# endif
170#endif 260#endif
171 261
172#ifndef EV_USE_REALTIME 262#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 264#endif
175 265
176#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
267# if _POSIX_C_SOURCE >= 199309L
268# define EV_USE_NANOSLEEP EV_FEATURE_OS
269# else
177# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
271# endif
178#endif 272#endif
179 273
180#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
182#endif 276#endif
183 277
184#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
185# ifdef _WIN32 279# ifdef _WIN32
186# define EV_USE_POLL 0 280# define EV_USE_POLL 0
187# else 281# else
188# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
189# endif 283# endif
190#endif 284#endif
191 285
192#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
195# else 289# else
196# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
197# endif 291# endif
198#endif 292#endif
199 293
… …
205# define EV_USE_PORT 0 299# define EV_USE_PORT 0
206#endif 300#endif
207 301
208#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
211# else 305# else
212# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
213# endif 307# endif
214#endif 308#endif
215 309
216#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL 311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif 312#endif
223 313
224#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL 315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif 316#endif
231 317
232#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
235# else 321# else
236# 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
237# endif 331# endif
238#endif 332#endif
239 333
240#if 0 /* debugging */ 334#if 0 /* debugging */
241# define EV_VERIFY 3 335# define EV_VERIFY 3
242# define EV_USE_4HEAP 1 336# define EV_USE_4HEAP 1
243# define EV_HEAP_CACHE_AT 1 337# define EV_HEAP_CACHE_AT 1
244#endif 338#endif
245 339
246#ifndef EV_VERIFY 340#ifndef EV_VERIFY
247# define EV_VERIFY !EV_MINIMAL 341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
248#endif 342#endif
249 343
250#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
251# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
252#endif 346#endif
253 347
254#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
255# 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
256#endif 364#endif
257 365
258/* 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
259 373
260#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
261# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
262# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
263#endif 377#endif
… …
271# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
272# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
273#endif 387#endif
274 388
275#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
276# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
277# include <sys/select.h> 392# include <sys/select.h>
278# endif 393# endif
279#endif 394#endif
280 395
281#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
397# include <sys/statfs.h>
282# include <sys/inotify.h> 398# include <sys/inotify.h>
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0
403# endif
283#endif 404#endif
284 405
285#if EV_SELECT_IS_WINSOCKET 406#if EV_SELECT_IS_WINSOCKET
286# include <winsock.h> 407# include <winsock.h>
287#endif 408#endif
288 409
289#if EV_USE_EVENTFD 410#if EV_USE_EVENTFD
290/* 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 */
291# include <stdint.h> 412# include <stdint.h>
292# ifdef __cplusplus 413# ifndef EFD_NONBLOCK
293extern "C" { 414# define EFD_NONBLOCK O_NONBLOCK
294# endif 415# endif
295int eventfd (unsigned int initval, int flags); 416# ifndef EFD_CLOEXEC
296# ifdef __cplusplus 417# ifdef O_CLOEXEC
297} 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
298# 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};
299#endif 446#endif
300 447
301/**/ 448/**/
302 449
303#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
304# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
305#else 452#else
306# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
307#endif 454#endif
308 455
309/* 456/*
310 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
311 * It is added to ev_rt_now when scheduling periodics
312 * to ensure progress, time-wise, even when rounding
313 * errors are against us.
314 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
315 * Better solutions welcome.
316 */ 459 */
317#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 */
318 462
319#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) */
320#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) */
321/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
322 465
323#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)
324# 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)
325# 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
326#else 493#else
327# define expect(expr,value) (expr) 494 #define ecb_inline static
328# define noinline
329# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
330# define inline
331# 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
332#endif 508 #endif
509#endif
333 510
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. */
334#define expect_false(expr) expect ((expr) != 0, 0) 567#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
335#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
336#define inline_size static inline 575#define inline_size ecb_inline
337 576
338#if EV_MINIMAL 577#if EV_FEATURE_CODE
578# define inline_speed ecb_inline
579#else
339# 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)
340#else 587#else
341# define inline_speed static inline
342#endif
343
344#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
345#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 588# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
589#endif
346 590
347#define EMPTY /* required for microsofts broken pseudo-c compiler */ 591#define EMPTY /* required for microsofts broken pseudo-c compiler */
348#define EMPTY2(a,b) /* used to suppress some warnings */ 592#define EMPTY2(a,b) /* used to suppress some warnings */
349 593
350typedef ev_watcher *W; 594typedef ev_watcher *W;
… …
352typedef ev_watcher_time *WT; 596typedef ev_watcher_time *WT;
353 597
354#define ev_active(w) ((W)(w))->active 598#define ev_active(w) ((W)(w))->active
355#define ev_at(w) ((WT)(w))->at 599#define ev_at(w) ((WT)(w))->at
356 600
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
357#if EV_USE_MONOTONIC 607#if EV_USE_MONOTONIC
358/* sig_atomic_t is used to avoid per-thread variables or locking but still */
359/* giving it a reasonably high chance of working on typical architetcures */
360static 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)
361#endif 619#endif
362 620
363#ifdef _WIN32 621#ifdef _WIN32
364# include "ev_win32.c" 622# include "ev_win32.c"
365#endif 623#endif
366 624
367/*****************************************************************************/ 625/*****************************************************************************/
368 626
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
369static void (*syserr_cb)(const char *msg); 725static void (*syserr_cb)(const char *msg);
370 726
371void 727void ecb_cold
372ev_set_syserr_cb (void (*cb)(const char *msg)) 728ev_set_syserr_cb (void (*cb)(const char *msg))
373{ 729{
374 syserr_cb = cb; 730 syserr_cb = cb;
375} 731}
376 732
377static void noinline 733static void noinline ecb_cold
378syserr (const char *msg) 734ev_syserr (const char *msg)
379{ 735{
380 if (!msg) 736 if (!msg)
381 msg = "(libev) system error"; 737 msg = "(libev) system error";
382 738
383 if (syserr_cb) 739 if (syserr_cb)
384 syserr_cb (msg); 740 syserr_cb (msg);
385 else 741 else
386 { 742 {
743#if EV_AVOID_STDIO
744 ev_printerr (msg);
745 ev_printerr (": ");
746 ev_printerr (strerror (errno));
747 ev_printerr ("\n");
748#else
387 perror (msg); 749 perror (msg);
750#endif
388 abort (); 751 abort ();
389 } 752 }
390} 753}
391 754
392static void * 755static void *
393ev_realloc_emul (void *ptr, long size) 756ev_realloc_emul (void *ptr, long size)
394{ 757{
758#if __GLIBC__
759 return realloc (ptr, size);
760#else
395 /* some systems, notably openbsd and darwin, fail to properly 761 /* some systems, notably openbsd and darwin, fail to properly
396 * 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
397 * the single unix specification, so work around them here. 763 * the single unix specification, so work around them here.
398 */ 764 */
399 765
400 if (size) 766 if (size)
401 return realloc (ptr, size); 767 return realloc (ptr, size);
402 768
403 free (ptr); 769 free (ptr);
404 return 0; 770 return 0;
771#endif
405} 772}
406 773
407static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 774static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
408 775
409void 776void ecb_cold
410ev_set_allocator (void *(*cb)(void *ptr, long size)) 777ev_set_allocator (void *(*cb)(void *ptr, long size))
411{ 778{
412 alloc = cb; 779 alloc = cb;
413} 780}
414 781
… …
417{ 784{
418 ptr = alloc (ptr, size); 785 ptr = alloc (ptr, size);
419 786
420 if (!ptr && size) 787 if (!ptr && size)
421 { 788 {
789#if EV_AVOID_STDIO
790 ev_printerr ("(libev) memory allocation failed, aborting.\n");
791#else
422 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 792 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
793#endif
423 abort (); 794 abort ();
424 } 795 }
425 796
426 return ptr; 797 return ptr;
427} 798}
… …
429#define ev_malloc(size) ev_realloc (0, (size)) 800#define ev_malloc(size) ev_realloc (0, (size))
430#define ev_free(ptr) ev_realloc ((ptr), 0) 801#define ev_free(ptr) ev_realloc ((ptr), 0)
431 802
432/*****************************************************************************/ 803/*****************************************************************************/
433 804
805/* set in reify when reification needed */
806#define EV_ANFD_REIFY 1
807
808/* file descriptor info structure */
434typedef struct 809typedef struct
435{ 810{
436 WL head; 811 WL head;
437 unsigned char events; 812 unsigned char events; /* the events watched for */
813 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
814 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
438 unsigned char reify; 815 unsigned char unused;
816#if EV_USE_EPOLL
817 unsigned int egen; /* generation counter to counter epoll bugs */
818#endif
439#if EV_SELECT_IS_WINSOCKET 819#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
440 SOCKET handle; 820 SOCKET handle;
441#endif 821#endif
822#if EV_USE_IOCP
823 OVERLAPPED or, ow;
824#endif
442} ANFD; 825} ANFD;
443 826
827/* stores the pending event set for a given watcher */
444typedef struct 828typedef struct
445{ 829{
446 W w; 830 W w;
447 int events; 831 int events; /* the pending event set for the given watcher */
448} ANPENDING; 832} ANPENDING;
449 833
450#if EV_USE_INOTIFY 834#if EV_USE_INOTIFY
451/* hash table entry per inotify-id */ 835/* hash table entry per inotify-id */
452typedef struct 836typedef struct
… …
455} ANFS; 839} ANFS;
456#endif 840#endif
457 841
458/* Heap Entry */ 842/* Heap Entry */
459#if EV_HEAP_CACHE_AT 843#if EV_HEAP_CACHE_AT
844 /* a heap element */
460 typedef struct { 845 typedef struct {
461 ev_tstamp at; 846 ev_tstamp at;
462 WT w; 847 WT w;
463 } ANHE; 848 } ANHE;
464 849
465 #define ANHE_w(he) (he).w /* access watcher, read-write */ 850 #define ANHE_w(he) (he).w /* access watcher, read-write */
466 #define ANHE_at(he) (he).at /* access cached at, read-only */ 851 #define ANHE_at(he) (he).at /* access cached at, read-only */
467 #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 */
468#else 853#else
854 /* a heap element */
469 typedef WT ANHE; 855 typedef WT ANHE;
470 856
471 #define ANHE_w(he) (he) 857 #define ANHE_w(he) (he)
472 #define ANHE_at(he) (he)->at 858 #define ANHE_at(he) (he)->at
473 #define ANHE_at_cache(he) 859 #define ANHE_at_cache(he)
… …
497 883
498 static int ev_default_loop_ptr; 884 static int ev_default_loop_ptr;
499 885
500#endif 886#endif
501 887
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
502/*****************************************************************************/ 900/*****************************************************************************/
503 901
902#ifndef EV_HAVE_EV_TIME
504ev_tstamp 903ev_tstamp
505ev_time (void) 904ev_time (void)
506{ 905{
507#if EV_USE_REALTIME 906#if EV_USE_REALTIME
907 if (expect_true (have_realtime))
908 {
508 struct timespec ts; 909 struct timespec ts;
509 clock_gettime (CLOCK_REALTIME, &ts); 910 clock_gettime (CLOCK_REALTIME, &ts);
510 return ts.tv_sec + ts.tv_nsec * 1e-9; 911 return ts.tv_sec + ts.tv_nsec * 1e-9;
511#else 912 }
913#endif
914
512 struct timeval tv; 915 struct timeval tv;
513 gettimeofday (&tv, 0); 916 gettimeofday (&tv, 0);
514 return tv.tv_sec + tv.tv_usec * 1e-6; 917 return tv.tv_sec + tv.tv_usec * 1e-6;
515#endif
516} 918}
919#endif
517 920
518ev_tstamp inline_size 921inline_size ev_tstamp
519get_clock (void) 922get_clock (void)
520{ 923{
521#if EV_USE_MONOTONIC 924#if EV_USE_MONOTONIC
522 if (expect_true (have_monotonic)) 925 if (expect_true (have_monotonic))
523 { 926 {
… …
544 if (delay > 0.) 947 if (delay > 0.)
545 { 948 {
546#if EV_USE_NANOSLEEP 949#if EV_USE_NANOSLEEP
547 struct timespec ts; 950 struct timespec ts;
548 951
549 ts.tv_sec = (time_t)delay; 952 EV_TS_SET (ts, delay);
550 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
551
552 nanosleep (&ts, 0); 953 nanosleep (&ts, 0);
553#elif defined(_WIN32) 954#elif defined(_WIN32)
554 Sleep ((unsigned long)(delay * 1e3)); 955 Sleep ((unsigned long)(delay * 1e3));
555#else 956#else
556 struct timeval tv; 957 struct timeval tv;
557 958
558 tv.tv_sec = (time_t)delay; 959 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
559 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 960 /* something not guaranteed by newer posix versions, but guaranteed */
560 961 /* by older ones */
962 EV_TV_SET (tv, delay);
561 select (0, 0, 0, 0, &tv); 963 select (0, 0, 0, 0, &tv);
562#endif 964#endif
563 } 965 }
564} 966}
565 967
566/*****************************************************************************/ 968/*****************************************************************************/
567 969
568#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 */
569 971
570int 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
571array_nextsize (int elem, int cur, int cnt) 975array_nextsize (int elem, int cur, int cnt)
572{ 976{
573 int ncur = cur + 1; 977 int ncur = cur + 1;
574 978
575 do 979 do
… …
586 } 990 }
587 991
588 return ncur; 992 return ncur;
589} 993}
590 994
591static noinline void * 995static void * noinline ecb_cold
592array_realloc (int elem, void *base, int *cur, int cnt) 996array_realloc (int elem, void *base, int *cur, int cnt)
593{ 997{
594 *cur = array_nextsize (elem, *cur, cnt); 998 *cur = array_nextsize (elem, *cur, cnt);
595 return ev_realloc (base, elem * *cur); 999 return ev_realloc (base, elem * *cur);
596} 1000}
1001
1002#define array_init_zero(base,count) \
1003 memset ((void *)(base), 0, sizeof (*(base)) * (count))
597 1004
598#define array_needsize(type,base,cur,cnt,init) \ 1005#define array_needsize(type,base,cur,cnt,init) \
599 if (expect_false ((cnt) > (cur))) \ 1006 if (expect_false ((cnt) > (cur))) \
600 { \ 1007 { \
601 int ocur_ = (cur); \ 1008 int ecb_unused ocur_ = (cur); \
602 (base) = (type *)array_realloc \ 1009 (base) = (type *)array_realloc \
603 (sizeof (type), (base), &(cur), (cnt)); \ 1010 (sizeof (type), (base), &(cur), (cnt)); \
604 init ((base) + (ocur_), (cur) - ocur_); \ 1011 init ((base) + (ocur_), (cur) - ocur_); \
605 } 1012 }
606 1013
… …
613 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1020 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
614 } 1021 }
615#endif 1022#endif
616 1023
617#define array_free(stem, idx) \ 1024#define array_free(stem, idx) \
618 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
619 1026
620/*****************************************************************************/ 1027/*****************************************************************************/
1028
1029/* dummy callback for pending events */
1030static void noinline
1031pendingcb (EV_P_ ev_prepare *w, int revents)
1032{
1033}
621 1034
622void noinline 1035void noinline
623ev_feed_event (EV_P_ void *w, int revents) 1036ev_feed_event (EV_P_ void *w, int revents)
624{ 1037{
625 W w_ = (W)w; 1038 W w_ = (W)w;
… …
634 pendings [pri][w_->pending - 1].w = w_; 1047 pendings [pri][w_->pending - 1].w = w_;
635 pendings [pri][w_->pending - 1].events = revents; 1048 pendings [pri][w_->pending - 1].events = revents;
636 } 1049 }
637} 1050}
638 1051
639void 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
640queue_events (EV_P_ W *events, int eventcnt, int type) 1068queue_events (EV_P_ W *events, int eventcnt, int type)
641{ 1069{
642 int i; 1070 int i;
643 1071
644 for (i = 0; i < eventcnt; ++i) 1072 for (i = 0; i < eventcnt; ++i)
645 ev_feed_event (EV_A_ events [i], type); 1073 ev_feed_event (EV_A_ events [i], type);
646} 1074}
647 1075
648/*****************************************************************************/ 1076/*****************************************************************************/
649 1077
650void inline_size 1078inline_speed void
651anfds_init (ANFD *base, int count)
652{
653 while (count--)
654 {
655 base->head = 0;
656 base->events = EV_NONE;
657 base->reify = 0;
658
659 ++base;
660 }
661}
662
663void inline_speed
664fd_event (EV_P_ int fd, int revents) 1079fd_event_nocheck (EV_P_ int fd, int revents)
665{ 1080{
666 ANFD *anfd = anfds + fd; 1081 ANFD *anfd = anfds + fd;
667 ev_io *w; 1082 ev_io *w;
668 1083
669 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)
… …
673 if (ev) 1088 if (ev)
674 ev_feed_event (EV_A_ (W)w, ev); 1089 ev_feed_event (EV_A_ (W)w, ev);
675 } 1090 }
676} 1091}
677 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
678void 1104void
679ev_feed_fd_event (EV_P_ int fd, int revents) 1105ev_feed_fd_event (EV_P_ int fd, int revents)
680{ 1106{
681 if (fd >= 0 && fd < anfdmax) 1107 if (fd >= 0 && fd < anfdmax)
682 fd_event (EV_A_ fd, revents); 1108 fd_event_nocheck (EV_A_ fd, revents);
683} 1109}
684 1110
685void inline_size 1111/* make sure the external fd watch events are in-sync */
1112/* with the kernel/libev internal state */
1113inline_size void
686fd_reify (EV_P) 1114fd_reify (EV_P)
687{ 1115{
688 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
689 1142
690 for (i = 0; i < fdchangecnt; ++i) 1143 for (i = 0; i < fdchangecnt; ++i)
691 { 1144 {
692 int fd = fdchanges [i]; 1145 int fd = fdchanges [i];
693 ANFD *anfd = anfds + fd; 1146 ANFD *anfd = anfds + fd;
694 ev_io *w; 1147 ev_io *w;
695 1148
696 unsigned char events = 0; 1149 unsigned char o_events = anfd->events;
1150 unsigned char o_reify = anfd->reify;
697 1151
698 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1152 anfd->reify = 0;
699 events |= (unsigned char)w->events;
700 1153
701#if EV_SELECT_IS_WINSOCKET 1154 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
702 if (events)
703 { 1155 {
704 unsigned long argp; 1156 anfd->events = 0;
705 #ifdef EV_FD_TO_WIN32_HANDLE 1157
706 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1158 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
707 #else 1159 anfd->events |= (unsigned char)w->events;
708 anfd->handle = _get_osfhandle (fd); 1160
709 #endif 1161 if (o_events != anfd->events)
710 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 1162 o_reify = EV__IOFDSET; /* actually |= */
711 } 1163 }
712#endif
713 1164
714 { 1165 if (o_reify & EV__IOFDSET)
715 unsigned char o_events = anfd->events;
716 unsigned char o_reify = anfd->reify;
717
718 anfd->reify = 0;
719 anfd->events = events;
720
721 if (o_events != events || o_reify & EV_IOFDSET)
722 backend_modify (EV_A_ fd, o_events, events); 1166 backend_modify (EV_A_ fd, o_events, anfd->events);
723 }
724 } 1167 }
725 1168
726 fdchangecnt = 0; 1169 fdchangecnt = 0;
727} 1170}
728 1171
729void inline_size 1172/* something about the given fd changed */
1173inline_size void
730fd_change (EV_P_ int fd, int flags) 1174fd_change (EV_P_ int fd, int flags)
731{ 1175{
732 unsigned char reify = anfds [fd].reify; 1176 unsigned char reify = anfds [fd].reify;
733 anfds [fd].reify |= flags; 1177 anfds [fd].reify |= flags;
734 1178
… …
738 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1182 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
739 fdchanges [fdchangecnt - 1] = fd; 1183 fdchanges [fdchangecnt - 1] = fd;
740 } 1184 }
741} 1185}
742 1186
743void inline_speed 1187/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1188inline_speed void ecb_cold
744fd_kill (EV_P_ int fd) 1189fd_kill (EV_P_ int fd)
745{ 1190{
746 ev_io *w; 1191 ev_io *w;
747 1192
748 while ((w = (ev_io *)anfds [fd].head)) 1193 while ((w = (ev_io *)anfds [fd].head))
… …
750 ev_io_stop (EV_A_ w); 1195 ev_io_stop (EV_A_ w);
751 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);
752 } 1197 }
753} 1198}
754 1199
755int inline_size 1200/* check whether the given fd is actually valid, for error recovery */
1201inline_size int ecb_cold
756fd_valid (int fd) 1202fd_valid (int fd)
757{ 1203{
758#ifdef _WIN32 1204#ifdef _WIN32
759 return _get_osfhandle (fd) != -1; 1205 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
760#else 1206#else
761 return fcntl (fd, F_GETFD) != -1; 1207 return fcntl (fd, F_GETFD) != -1;
762#endif 1208#endif
763} 1209}
764 1210
765/* called on EBADF to verify fds */ 1211/* called on EBADF to verify fds */
766static void noinline 1212static void noinline ecb_cold
767fd_ebadf (EV_P) 1213fd_ebadf (EV_P)
768{ 1214{
769 int fd; 1215 int fd;
770 1216
771 for (fd = 0; fd < anfdmax; ++fd) 1217 for (fd = 0; fd < anfdmax; ++fd)
772 if (anfds [fd].events) 1218 if (anfds [fd].events)
773 if (!fd_valid (fd) == -1 && errno == EBADF) 1219 if (!fd_valid (fd) && errno == EBADF)
774 fd_kill (EV_A_ fd); 1220 fd_kill (EV_A_ fd);
775} 1221}
776 1222
777/* 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 */
778static void noinline 1224static void noinline ecb_cold
779fd_enomem (EV_P) 1225fd_enomem (EV_P)
780{ 1226{
781 int fd; 1227 int fd;
782 1228
783 for (fd = anfdmax; fd--; ) 1229 for (fd = anfdmax; fd--; )
784 if (anfds [fd].events) 1230 if (anfds [fd].events)
785 { 1231 {
786 fd_kill (EV_A_ fd); 1232 fd_kill (EV_A_ fd);
787 return; 1233 break;
788 } 1234 }
789} 1235}
790 1236
791/* 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 */
792static void noinline 1238static void noinline
… …
796 1242
797 for (fd = 0; fd < anfdmax; ++fd) 1243 for (fd = 0; fd < anfdmax; ++fd)
798 if (anfds [fd].events) 1244 if (anfds [fd].events)
799 { 1245 {
800 anfds [fd].events = 0; 1246 anfds [fd].events = 0;
1247 anfds [fd].emask = 0;
801 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1248 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
802 } 1249 }
803} 1250}
804 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
805/*****************************************************************************/ 1266/*****************************************************************************/
806 1267
807/* 1268/*
808 * 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
809 * 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
810 * the branching factor of the d-tree. 1271 * the branching factor of the d-tree.
811 */ 1272 */
812 1273
813/* 1274/*
… …
822#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1283#define HEAP0 (DHEAP - 1) /* index of first element in heap */
823#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1284#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
824#define UPHEAP_DONE(p,k) ((p) == (k)) 1285#define UPHEAP_DONE(p,k) ((p) == (k))
825 1286
826/* away from the root */ 1287/* away from the root */
827void inline_speed 1288inline_speed void
828downheap (ANHE *heap, int N, int k) 1289downheap (ANHE *heap, int N, int k)
829{ 1290{
830 ANHE he = heap [k]; 1291 ANHE he = heap [k];
831 ANHE *E = heap + N + HEAP0; 1292 ANHE *E = heap + N + HEAP0;
832 1293
… …
872#define HEAP0 1 1333#define HEAP0 1
873#define HPARENT(k) ((k) >> 1) 1334#define HPARENT(k) ((k) >> 1)
874#define UPHEAP_DONE(p,k) (!(p)) 1335#define UPHEAP_DONE(p,k) (!(p))
875 1336
876/* away from the root */ 1337/* away from the root */
877void inline_speed 1338inline_speed void
878downheap (ANHE *heap, int N, int k) 1339downheap (ANHE *heap, int N, int k)
879{ 1340{
880 ANHE he = heap [k]; 1341 ANHE he = heap [k];
881 1342
882 for (;;) 1343 for (;;)
883 { 1344 {
884 int c = k << 1; 1345 int c = k << 1;
885 1346
886 if (c > N + HEAP0 - 1) 1347 if (c >= N + HEAP0)
887 break; 1348 break;
888 1349
889 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])
890 ? 1 : 0; 1351 ? 1 : 0;
891 1352
… …
902 ev_active (ANHE_w (he)) = k; 1363 ev_active (ANHE_w (he)) = k;
903} 1364}
904#endif 1365#endif
905 1366
906/* towards the root */ 1367/* towards the root */
907void inline_speed 1368inline_speed void
908upheap (ANHE *heap, int k) 1369upheap (ANHE *heap, int k)
909{ 1370{
910 ANHE he = heap [k]; 1371 ANHE he = heap [k];
911 1372
912 for (;;) 1373 for (;;)
… …
923 1384
924 heap [k] = he; 1385 heap [k] = he;
925 ev_active (ANHE_w (he)) = k; 1386 ev_active (ANHE_w (he)) = k;
926} 1387}
927 1388
928void inline_size 1389/* move an element suitably so it is in a correct place */
1390inline_size void
929adjustheap (ANHE *heap, int N, int k) 1391adjustheap (ANHE *heap, int N, int k)
930{ 1392{
931 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)]))
932 upheap (heap, k); 1394 upheap (heap, k);
933 else 1395 else
934 downheap (heap, N, k); 1396 downheap (heap, N, k);
935} 1397}
936 1398
937/* 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 */
938void inline_size 1400inline_size void
939reheap (ANHE *heap, int N) 1401reheap (ANHE *heap, int N)
940{ 1402{
941 int i; 1403 int i;
1404
942 /* 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 */
943 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ 1406 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
944 for (i = 0; i < N; ++i) 1407 for (i = 0; i < N; ++i)
945 upheap (heap, i + HEAP0); 1408 upheap (heap, i + HEAP0);
946} 1409}
947 1410
948#if EV_VERIFY
949static void
950checkheap (ANHE *heap, int N)
951{
952 int i;
953
954 for (i = HEAP0; i < N + HEAP0; ++i)
955 {
956 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
957 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
958 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
959 }
960}
961#endif
962
963/*****************************************************************************/ 1411/*****************************************************************************/
964 1412
1413/* associate signal watchers to a signal signal */
965typedef struct 1414typedef struct
966{ 1415{
1416 EV_ATOMIC_T pending;
1417#if EV_MULTIPLICITY
1418 EV_P;
1419#endif
967 WL head; 1420 WL head;
968 EV_ATOMIC_T gotsig;
969} ANSIG; 1421} ANSIG;
970 1422
971static ANSIG *signals; 1423static ANSIG signals [EV_NSIG - 1];
972static int signalmax;
973
974static EV_ATOMIC_T gotsig;
975
976void inline_size
977signals_init (ANSIG *base, int count)
978{
979 while (count--)
980 {
981 base->head = 0;
982 base->gotsig = 0;
983
984 ++base;
985 }
986}
987 1424
988/*****************************************************************************/ 1425/*****************************************************************************/
989 1426
990void inline_speed 1427#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
991fd_intern (int fd)
992{
993#ifdef _WIN32
994 int arg = 1;
995 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
996#else
997 fcntl (fd, F_SETFD, FD_CLOEXEC);
998 fcntl (fd, F_SETFL, O_NONBLOCK);
999#endif
1000}
1001 1428
1002static void noinline 1429static void noinline ecb_cold
1003evpipe_init (EV_P) 1430evpipe_init (EV_P)
1004{ 1431{
1005 if (!ev_is_active (&pipeev)) 1432 if (!ev_is_active (&pipe_w))
1006 { 1433 {
1007#if EV_USE_EVENTFD 1434# if EV_USE_EVENTFD
1435 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1436 if (evfd < 0 && errno == EINVAL)
1008 if ((evfd = eventfd (0, 0)) >= 0) 1437 evfd = eventfd (0, 0);
1438
1439 if (evfd >= 0)
1009 { 1440 {
1010 evpipe [0] = -1; 1441 evpipe [0] = -1;
1011 fd_intern (evfd); 1442 fd_intern (evfd); /* doing it twice doesn't hurt */
1012 ev_io_set (&pipeev, evfd, EV_READ); 1443 ev_io_set (&pipe_w, evfd, EV_READ);
1013 } 1444 }
1014 else 1445 else
1015#endif 1446# endif
1016 { 1447 {
1017 while (pipe (evpipe)) 1448 while (pipe (evpipe))
1018 syserr ("(libev) error creating signal/async pipe"); 1449 ev_syserr ("(libev) error creating signal/async pipe");
1019 1450
1020 fd_intern (evpipe [0]); 1451 fd_intern (evpipe [0]);
1021 fd_intern (evpipe [1]); 1452 fd_intern (evpipe [1]);
1022 ev_io_set (&pipeev, evpipe [0], EV_READ); 1453 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1023 } 1454 }
1024 1455
1025 ev_io_start (EV_A_ &pipeev); 1456 ev_io_start (EV_A_ &pipe_w);
1026 ev_unref (EV_A); /* watcher should not keep loop alive */ 1457 ev_unref (EV_A); /* watcher should not keep loop alive */
1027 } 1458 }
1028} 1459}
1029 1460
1030void inline_size 1461inline_speed void
1031evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1462evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1032{ 1463{
1033 if (!*flag) 1464 if (expect_true (*flag))
1465 return;
1466
1467 *flag = 1;
1468
1469 ECB_MEMORY_FENCE_RELEASE;
1470
1471 pipe_write_skipped = 1;
1472
1473 ECB_MEMORY_FENCE;
1474
1475 if (pipe_write_wanted)
1034 { 1476 {
1477 int old_errno;
1478
1479 pipe_write_skipped = 0; /* optimisation only */
1480
1035 int old_errno = errno; /* save errno because write might clobber it */ 1481 old_errno = errno; /* save errno because write will clobber it */
1036
1037 *flag = 1;
1038 1482
1039#if EV_USE_EVENTFD 1483#if EV_USE_EVENTFD
1040 if (evfd >= 0) 1484 if (evfd >= 0)
1041 { 1485 {
1042 uint64_t counter = 1; 1486 uint64_t counter = 1;
1043 write (evfd, &counter, sizeof (uint64_t)); 1487 write (evfd, &counter, sizeof (uint64_t));
1044 } 1488 }
1045 else 1489 else
1046#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. */
1047 write (evpipe [1], &old_errno, 1); 1497 write (evpipe [1], &(evpipe [1]), 1);
1498 }
1048 1499
1049 errno = old_errno; 1500 errno = old_errno;
1050 } 1501 }
1051} 1502}
1052 1503
1504/* called whenever the libev signal pipe */
1505/* got some events (signal, async) */
1053static void 1506static void
1054pipecb (EV_P_ ev_io *iow, int revents) 1507pipecb (EV_P_ ev_io *iow, int revents)
1055{ 1508{
1509 int i;
1510
1511 if (revents & EV_READ)
1512 {
1056#if EV_USE_EVENTFD 1513#if EV_USE_EVENTFD
1057 if (evfd >= 0) 1514 if (evfd >= 0)
1058 { 1515 {
1059 uint64_t counter; 1516 uint64_t counter;
1060 read (evfd, &counter, sizeof (uint64_t)); 1517 read (evfd, &counter, sizeof (uint64_t));
1061 } 1518 }
1062 else 1519 else
1063#endif 1520#endif
1064 { 1521 {
1065 char dummy; 1522 char dummy;
1523 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1066 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)
1067 } 1532 {
1533 sig_pending = 0;
1068 1534
1069 if (gotsig && ev_is_default_loop (EV_A)) 1535 for (i = EV_NSIG - 1; i--; )
1070 { 1536 if (expect_false (signals [i].pending))
1071 int signum;
1072 gotsig = 0;
1073
1074 for (signum = signalmax; signum--; )
1075 if (signals [signum].gotsig)
1076 ev_feed_signal_event (EV_A_ signum + 1); 1537 ev_feed_signal_event (EV_A_ i + 1);
1077 } 1538 }
1539#endif
1078 1540
1079#if EV_ASYNC_ENABLE 1541#if EV_ASYNC_ENABLE
1080 if (gotasync) 1542 if (async_pending)
1081 { 1543 {
1082 int i; 1544 async_pending = 0;
1083 gotasync = 0;
1084 1545
1085 for (i = asynccnt; i--; ) 1546 for (i = asynccnt; i--; )
1086 if (asyncs [i]->sent) 1547 if (asyncs [i]->sent)
1087 { 1548 {
1088 asyncs [i]->sent = 0; 1549 asyncs [i]->sent = 0;
… …
1092#endif 1553#endif
1093} 1554}
1094 1555
1095/*****************************************************************************/ 1556/*****************************************************************************/
1096 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
1097static void 1575static void
1098ev_sighandler (int signum) 1576ev_sighandler (int signum)
1099{ 1577{
1100#if EV_MULTIPLICITY
1101 struct ev_loop *loop = &default_loop_struct;
1102#endif
1103
1104#if _WIN32 1578#ifdef _WIN32
1105 signal (signum, ev_sighandler); 1579 signal (signum, ev_sighandler);
1106#endif 1580#endif
1107 1581
1108 signals [signum - 1].gotsig = 1; 1582 ev_feed_signal (signum);
1109 evpipe_write (EV_A_ &gotsig);
1110} 1583}
1111 1584
1112void noinline 1585void noinline
1113ev_feed_signal_event (EV_P_ int signum) 1586ev_feed_signal_event (EV_P_ int signum)
1114{ 1587{
1115 WL w; 1588 WL w;
1116 1589
1590 if (expect_false (signum <= 0 || signum > EV_NSIG))
1591 return;
1592
1593 --signum;
1594
1117#if EV_MULTIPLICITY 1595#if EV_MULTIPLICITY
1118 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 */
1119#endif 1597 /* or, likely more useful, feeding a signal nobody is waiting for */
1120 1598
1121 --signum; 1599 if (expect_false (signals [signum].loop != EV_A))
1122
1123 if (signum < 0 || signum >= signalmax)
1124 return; 1600 return;
1601#endif
1125 1602
1126 signals [signum].gotsig = 0; 1603 signals [signum].pending = 0;
1127 1604
1128 for (w = signals [signum].head; w; w = w->next) 1605 for (w = signals [signum].head; w; w = w->next)
1129 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1606 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1130} 1607}
1131 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
1132/*****************************************************************************/ 1631/*****************************************************************************/
1133 1632
1633#if EV_CHILD_ENABLE
1134static WL childs [EV_PID_HASHSIZE]; 1634static WL childs [EV_PID_HASHSIZE];
1135
1136#ifndef _WIN32
1137 1635
1138static ev_signal childev; 1636static ev_signal childev;
1139 1637
1140#ifndef WIFCONTINUED 1638#ifndef WIFCONTINUED
1141# define WIFCONTINUED(status) 0 1639# define WIFCONTINUED(status) 0
1142#endif 1640#endif
1143 1641
1144void inline_speed 1642/* handle a single child status event */
1643inline_speed void
1145child_reap (EV_P_ int chain, int pid, int status) 1644child_reap (EV_P_ int chain, int pid, int status)
1146{ 1645{
1147 ev_child *w; 1646 ev_child *w;
1148 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1647 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1149 1648
1150 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)
1151 { 1650 {
1152 if ((w->pid == pid || !w->pid) 1651 if ((w->pid == pid || !w->pid)
1153 && (!traced || (w->flags & 1))) 1652 && (!traced || (w->flags & 1)))
1154 { 1653 {
1155 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 */
… …
1162 1661
1163#ifndef WCONTINUED 1662#ifndef WCONTINUED
1164# define WCONTINUED 0 1663# define WCONTINUED 0
1165#endif 1664#endif
1166 1665
1666/* called on sigchld etc., calls waitpid */
1167static void 1667static void
1168childcb (EV_P_ ev_signal *sw, int revents) 1668childcb (EV_P_ ev_signal *sw, int revents)
1169{ 1669{
1170 int pid, status; 1670 int pid, status;
1171 1671
… …
1179 /* 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 */
1180 /* 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 */
1181 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1681 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1182 1682
1183 child_reap (EV_A_ pid, pid, status); 1683 child_reap (EV_A_ pid, pid, status);
1184 if (EV_PID_HASHSIZE > 1) 1684 if ((EV_PID_HASHSIZE) > 1)
1185 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 */
1186} 1686}
1187 1687
1188#endif 1688#endif
1189 1689
1190/*****************************************************************************/ 1690/*****************************************************************************/
1191 1691
1692#if EV_USE_IOCP
1693# include "ev_iocp.c"
1694#endif
1192#if EV_USE_PORT 1695#if EV_USE_PORT
1193# include "ev_port.c" 1696# include "ev_port.c"
1194#endif 1697#endif
1195#if EV_USE_KQUEUE 1698#if EV_USE_KQUEUE
1196# include "ev_kqueue.c" 1699# include "ev_kqueue.c"
… …
1203#endif 1706#endif
1204#if EV_USE_SELECT 1707#if EV_USE_SELECT
1205# include "ev_select.c" 1708# include "ev_select.c"
1206#endif 1709#endif
1207 1710
1208int 1711int ecb_cold
1209ev_version_major (void) 1712ev_version_major (void)
1210{ 1713{
1211 return EV_VERSION_MAJOR; 1714 return EV_VERSION_MAJOR;
1212} 1715}
1213 1716
1214int 1717int ecb_cold
1215ev_version_minor (void) 1718ev_version_minor (void)
1216{ 1719{
1217 return EV_VERSION_MINOR; 1720 return EV_VERSION_MINOR;
1218} 1721}
1219 1722
1220/* 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 */
1221int inline_size 1724int inline_size ecb_cold
1222enable_secure (void) 1725enable_secure (void)
1223{ 1726{
1224#ifdef _WIN32 1727#ifdef _WIN32
1225 return 0; 1728 return 0;
1226#else 1729#else
1227 return getuid () != geteuid () 1730 return getuid () != geteuid ()
1228 || getgid () != getegid (); 1731 || getgid () != getegid ();
1229#endif 1732#endif
1230} 1733}
1231 1734
1232unsigned int 1735unsigned int ecb_cold
1233ev_supported_backends (void) 1736ev_supported_backends (void)
1234{ 1737{
1235 unsigned int flags = 0; 1738 unsigned int flags = 0;
1236 1739
1237 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1740 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1241 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1744 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1242 1745
1243 return flags; 1746 return flags;
1244} 1747}
1245 1748
1246unsigned int 1749unsigned int ecb_cold
1247ev_recommended_backends (void) 1750ev_recommended_backends (void)
1248{ 1751{
1249 unsigned int flags = ev_supported_backends (); 1752 unsigned int flags = ev_supported_backends ();
1250 1753
1251#ifndef __NetBSD__ 1754#ifndef __NetBSD__
1252 /* kqueue is borked on everything but netbsd apparently */ 1755 /* kqueue is borked on everything but netbsd apparently */
1253 /* 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 */
1254 flags &= ~EVBACKEND_KQUEUE; 1757 flags &= ~EVBACKEND_KQUEUE;
1255#endif 1758#endif
1256#ifdef __APPLE__ 1759#ifdef __APPLE__
1257 // flags &= ~EVBACKEND_KQUEUE; for documentation 1760 /* only select works correctly on that "unix-certified" platform */
1258 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) */
1259#endif 1766#endif
1260 1767
1261 return flags; 1768 return flags;
1262} 1769}
1263 1770
1264unsigned int 1771unsigned int ecb_cold
1265ev_embeddable_backends (void) 1772ev_embeddable_backends (void)
1266{ 1773{
1267 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1774 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1268 1775
1269 /* 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 */
1270 /* please fix it and tell me how to detect the fix */ 1777 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1271 flags &= ~EVBACKEND_EPOLL; 1778 flags &= ~EVBACKEND_EPOLL;
1272 1779
1273 return flags; 1780 return flags;
1274} 1781}
1275 1782
1276unsigned int 1783unsigned int
1277ev_backend (EV_P) 1784ev_backend (EV_P)
1278{ 1785{
1279 return backend; 1786 return backend;
1280} 1787}
1281 1788
1789#if EV_FEATURE_API
1282unsigned int 1790unsigned int
1283ev_loop_count (EV_P) 1791ev_iteration (EV_P)
1284{ 1792{
1285 return loop_count; 1793 return loop_count;
1794}
1795
1796unsigned int
1797ev_depth (EV_P)
1798{
1799 return loop_depth;
1286} 1800}
1287 1801
1288void 1802void
1289ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1803ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1290{ 1804{
… …
1295ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1809ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1296{ 1810{
1297 timeout_blocktime = interval; 1811 timeout_blocktime = interval;
1298} 1812}
1299 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 */
1300static void noinline 1841static void noinline ecb_cold
1301loop_init (EV_P_ unsigned int flags) 1842loop_init (EV_P_ unsigned int flags)
1302{ 1843{
1303 if (!backend) 1844 if (!backend)
1304 { 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
1305#if EV_USE_MONOTONIC 1858#if EV_USE_MONOTONIC
1859 if (!have_monotonic)
1306 { 1860 {
1307 struct timespec ts; 1861 struct timespec ts;
1862
1308 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1863 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1309 have_monotonic = 1; 1864 have_monotonic = 1;
1310 } 1865 }
1311#endif
1312
1313 ev_rt_now = ev_time ();
1314 mn_now = get_clock ();
1315 now_floor = mn_now;
1316 rtmn_diff = ev_rt_now - mn_now;
1317
1318 io_blocktime = 0.;
1319 timeout_blocktime = 0.;
1320 backend = 0;
1321 backend_fd = -1;
1322 gotasync = 0;
1323#if EV_USE_INOTIFY
1324 fs_fd = -2;
1325#endif 1866#endif
1326 1867
1327 /* pid check not overridable via env */ 1868 /* pid check not overridable via env */
1328#ifndef _WIN32 1869#ifndef _WIN32
1329 if (flags & EVFLAG_FORKCHECK) 1870 if (flags & EVFLAG_FORKCHECK)
… …
1333 if (!(flags & EVFLAG_NOENV) 1874 if (!(flags & EVFLAG_NOENV)
1334 && !enable_secure () 1875 && !enable_secure ()
1335 && getenv ("LIBEV_FLAGS")) 1876 && getenv ("LIBEV_FLAGS"))
1336 flags = atoi (getenv ("LIBEV_FLAGS")); 1877 flags = atoi (getenv ("LIBEV_FLAGS"));
1337 1878
1338 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))
1339 flags |= ev_recommended_backends (); 1905 flags |= ev_recommended_backends ();
1340 1906
1907#if EV_USE_IOCP
1908 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1909#endif
1341#if EV_USE_PORT 1910#if EV_USE_PORT
1342 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1911 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1343#endif 1912#endif
1344#if EV_USE_KQUEUE 1913#if EV_USE_KQUEUE
1345 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1914 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1352#endif 1921#endif
1353#if EV_USE_SELECT 1922#if EV_USE_SELECT
1354 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1923 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1355#endif 1924#endif
1356 1925
1926 ev_prepare_init (&pending_w, pendingcb);
1927
1928#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1357 ev_init (&pipeev, pipecb); 1929 ev_init (&pipe_w, pipecb);
1358 ev_set_priority (&pipeev, EV_MAXPRI); 1930 ev_set_priority (&pipe_w, EV_MAXPRI);
1931#endif
1359 } 1932 }
1360} 1933}
1361 1934
1362static void noinline 1935/* free up a loop structure */
1936void ecb_cold
1363loop_destroy (EV_P) 1937ev_loop_destroy (EV_P)
1364{ 1938{
1365 int i; 1939 int i;
1366 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
1367 if (ev_is_active (&pipeev)) 1964 if (ev_is_active (&pipe_w))
1368 { 1965 {
1369 ev_ref (EV_A); /* signal watcher */ 1966 /*ev_ref (EV_A);*/
1370 ev_io_stop (EV_A_ &pipeev); 1967 /*ev_io_stop (EV_A_ &pipe_w);*/
1371 1968
1372#if EV_USE_EVENTFD 1969#if EV_USE_EVENTFD
1373 if (evfd >= 0) 1970 if (evfd >= 0)
1374 close (evfd); 1971 close (evfd);
1375#endif 1972#endif
1376 1973
1377 if (evpipe [0] >= 0) 1974 if (evpipe [0] >= 0)
1378 { 1975 {
1379 close (evpipe [0]); 1976 EV_WIN32_CLOSE_FD (evpipe [0]);
1380 close (evpipe [1]); 1977 EV_WIN32_CLOSE_FD (evpipe [1]);
1381 } 1978 }
1382 } 1979 }
1980
1981#if EV_USE_SIGNALFD
1982 if (ev_is_active (&sigfd_w))
1983 close (sigfd);
1984#endif
1383 1985
1384#if EV_USE_INOTIFY 1986#if EV_USE_INOTIFY
1385 if (fs_fd >= 0) 1987 if (fs_fd >= 0)
1386 close (fs_fd); 1988 close (fs_fd);
1387#endif 1989#endif
1388 1990
1389 if (backend_fd >= 0) 1991 if (backend_fd >= 0)
1390 close (backend_fd); 1992 close (backend_fd);
1391 1993
1994#if EV_USE_IOCP
1995 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1996#endif
1392#if EV_USE_PORT 1997#if EV_USE_PORT
1393 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1998 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1394#endif 1999#endif
1395#if EV_USE_KQUEUE 2000#if EV_USE_KQUEUE
1396 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2001 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1411#if EV_IDLE_ENABLE 2016#if EV_IDLE_ENABLE
1412 array_free (idle, [i]); 2017 array_free (idle, [i]);
1413#endif 2018#endif
1414 } 2019 }
1415 2020
1416 ev_free (anfds); anfdmax = 0; 2021 ev_free (anfds); anfds = 0; anfdmax = 0;
1417 2022
1418 /* 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);
1419 array_free (fdchange, EMPTY); 2025 array_free (fdchange, EMPTY);
1420 array_free (timer, EMPTY); 2026 array_free (timer, EMPTY);
1421#if EV_PERIODIC_ENABLE 2027#if EV_PERIODIC_ENABLE
1422 array_free (periodic, EMPTY); 2028 array_free (periodic, EMPTY);
1423#endif 2029#endif
1424#if EV_FORK_ENABLE 2030#if EV_FORK_ENABLE
1425 array_free (fork, EMPTY); 2031 array_free (fork, EMPTY);
1426#endif 2032#endif
2033#if EV_CLEANUP_ENABLE
2034 array_free (cleanup, EMPTY);
2035#endif
1427 array_free (prepare, EMPTY); 2036 array_free (prepare, EMPTY);
1428 array_free (check, EMPTY); 2037 array_free (check, EMPTY);
1429#if EV_ASYNC_ENABLE 2038#if EV_ASYNC_ENABLE
1430 array_free (async, EMPTY); 2039 array_free (async, EMPTY);
1431#endif 2040#endif
1432 2041
1433 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
1434} 2052}
1435 2053
1436#if EV_USE_INOTIFY 2054#if EV_USE_INOTIFY
1437void inline_size infy_fork (EV_P); 2055inline_size void infy_fork (EV_P);
1438#endif 2056#endif
1439 2057
1440void inline_size 2058inline_size void
1441loop_fork (EV_P) 2059loop_fork (EV_P)
1442{ 2060{
1443#if EV_USE_PORT 2061#if EV_USE_PORT
1444 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2062 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1445#endif 2063#endif
… …
1451#endif 2069#endif
1452#if EV_USE_INOTIFY 2070#if EV_USE_INOTIFY
1453 infy_fork (EV_A); 2071 infy_fork (EV_A);
1454#endif 2072#endif
1455 2073
1456 if (ev_is_active (&pipeev)) 2074 if (ev_is_active (&pipe_w))
1457 { 2075 {
1458 /* this "locks" the handlers against writing to the pipe */ 2076 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1459 /* while we modify the fd vars */
1460 gotsig = 1;
1461#if EV_ASYNC_ENABLE
1462 gotasync = 1;
1463#endif
1464 2077
1465 ev_ref (EV_A); 2078 ev_ref (EV_A);
1466 ev_io_stop (EV_A_ &pipeev); 2079 ev_io_stop (EV_A_ &pipe_w);
1467 2080
1468#if EV_USE_EVENTFD 2081#if EV_USE_EVENTFD
1469 if (evfd >= 0) 2082 if (evfd >= 0)
1470 close (evfd); 2083 close (evfd);
1471#endif 2084#endif
1472 2085
1473 if (evpipe [0] >= 0) 2086 if (evpipe [0] >= 0)
1474 { 2087 {
1475 close (evpipe [0]); 2088 EV_WIN32_CLOSE_FD (evpipe [0]);
1476 close (evpipe [1]); 2089 EV_WIN32_CLOSE_FD (evpipe [1]);
1477 } 2090 }
1478 2091
2092#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1479 evpipe_init (EV_A); 2093 evpipe_init (EV_A);
1480 /* now iterate over everything, in case we missed something */ 2094 /* now iterate over everything, in case we missed something */
1481 pipecb (EV_A_ &pipeev, EV_READ); 2095 pipecb (EV_A_ &pipe_w, EV_READ);
2096#endif
1482 } 2097 }
1483 2098
1484 postfork = 0; 2099 postfork = 0;
1485} 2100}
1486 2101
1487#if EV_MULTIPLICITY 2102#if EV_MULTIPLICITY
1488 2103
1489struct ev_loop * 2104struct ev_loop * ecb_cold
1490ev_loop_new (unsigned int flags) 2105ev_loop_new (unsigned int flags)
1491{ 2106{
1492 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));
1493 2108
1494 memset (loop, 0, sizeof (struct ev_loop)); 2109 memset (EV_A, 0, sizeof (struct ev_loop));
1495
1496 loop_init (EV_A_ flags); 2110 loop_init (EV_A_ flags);
1497 2111
1498 if (ev_backend (EV_A)) 2112 if (ev_backend (EV_A))
1499 return loop; 2113 return EV_A;
1500 2114
2115 ev_free (EV_A);
1501 return 0; 2116 return 0;
1502} 2117}
1503 2118
1504void 2119#endif /* multiplicity */
1505ev_loop_destroy (EV_P)
1506{
1507 loop_destroy (EV_A);
1508 ev_free (loop);
1509}
1510
1511void
1512ev_loop_fork (EV_P)
1513{
1514 postfork = 1; /* must be in line with ev_default_fork */
1515}
1516 2120
1517#if EV_VERIFY 2121#if EV_VERIFY
1518static void 2122static void noinline ecb_cold
2123verify_watcher (EV_P_ W w)
2124{
2125 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2126
2127 if (w->pending)
2128 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2129}
2130
2131static void noinline ecb_cold
2132verify_heap (EV_P_ ANHE *heap, int N)
2133{
2134 int i;
2135
2136 for (i = HEAP0; i < N + HEAP0; ++i)
2137 {
2138 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
2139 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
2140 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
2141
2142 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2143 }
2144}
2145
2146static void noinline ecb_cold
1519array_check (W **ws, int cnt) 2147array_verify (EV_P_ W *ws, int cnt)
1520{ 2148{
1521 while (cnt--) 2149 while (cnt--)
2150 {
1522 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2151 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
2152 verify_watcher (EV_A_ ws [cnt]);
2153 }
1523} 2154}
1524#endif 2155#endif
1525 2156
1526void 2157#if EV_FEATURE_API
2158void ecb_cold
1527ev_loop_verify (EV_P) 2159ev_verify (EV_P)
1528{ 2160{
1529#if EV_VERIFY 2161#if EV_VERIFY
1530 int i; 2162 int i;
2163 WL w;
1531 2164
2165 assert (activecnt >= -1);
2166
2167 assert (fdchangemax >= fdchangecnt);
2168 for (i = 0; i < fdchangecnt; ++i)
2169 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2170
2171 assert (anfdmax >= 0);
2172 for (i = 0; i < anfdmax; ++i)
2173 for (w = anfds [i].head; w; w = w->next)
2174 {
2175 verify_watcher (EV_A_ (W)w);
2176 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2177 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2178 }
2179
2180 assert (timermax >= timercnt);
1532 checkheap (timers, timercnt); 2181 verify_heap (EV_A_ timers, timercnt);
2182
1533#if EV_PERIODIC_ENABLE 2183#if EV_PERIODIC_ENABLE
2184 assert (periodicmax >= periodiccnt);
1534 checkheap (periodics, periodiccnt); 2185 verify_heap (EV_A_ periodics, periodiccnt);
1535#endif 2186#endif
1536 2187
2188 for (i = NUMPRI; i--; )
2189 {
2190 assert (pendingmax [i] >= pendingcnt [i]);
1537#if EV_IDLE_ENABLE 2191#if EV_IDLE_ENABLE
1538 for (i = NUMPRI; i--; ) 2192 assert (idleall >= 0);
2193 assert (idlemax [i] >= idlecnt [i]);
1539 array_check ((W **)idles [i], idlecnt [i]); 2194 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1540#endif 2195#endif
2196 }
2197
1541#if EV_FORK_ENABLE 2198#if EV_FORK_ENABLE
2199 assert (forkmax >= forkcnt);
1542 array_check ((W **)forks, forkcnt); 2200 array_verify (EV_A_ (W *)forks, forkcnt);
1543#endif 2201#endif
2202
2203#if EV_CLEANUP_ENABLE
2204 assert (cleanupmax >= cleanupcnt);
2205 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2206#endif
2207
1544#if EV_ASYNC_ENABLE 2208#if EV_ASYNC_ENABLE
2209 assert (asyncmax >= asynccnt);
1545 array_check ((W **)asyncs, asynccnt); 2210 array_verify (EV_A_ (W *)asyncs, asynccnt);
2211#endif
2212
2213#if EV_PREPARE_ENABLE
2214 assert (preparemax >= preparecnt);
2215 array_verify (EV_A_ (W *)prepares, preparecnt);
2216#endif
2217
2218#if EV_CHECK_ENABLE
2219 assert (checkmax >= checkcnt);
2220 array_verify (EV_A_ (W *)checks, checkcnt);
2221#endif
2222
2223# if 0
2224#if EV_CHILD_ENABLE
2225 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2226 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2227#endif
1546#endif 2228# endif
1547 array_check ((W **)prepares, preparecnt);
1548 array_check ((W **)checks, checkcnt);
1549#endif 2229#endif
1550} 2230}
1551 2231#endif
1552#endif /* multiplicity */
1553 2232
1554#if EV_MULTIPLICITY 2233#if EV_MULTIPLICITY
1555struct ev_loop * 2234struct ev_loop * ecb_cold
1556ev_default_loop_init (unsigned int flags)
1557#else 2235#else
1558int 2236int
2237#endif
1559ev_default_loop (unsigned int flags) 2238ev_default_loop (unsigned int flags)
1560#endif
1561{ 2239{
1562 if (!ev_default_loop_ptr) 2240 if (!ev_default_loop_ptr)
1563 { 2241 {
1564#if EV_MULTIPLICITY 2242#if EV_MULTIPLICITY
1565 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2243 EV_P = ev_default_loop_ptr = &default_loop_struct;
1566#else 2244#else
1567 ev_default_loop_ptr = 1; 2245 ev_default_loop_ptr = 1;
1568#endif 2246#endif
1569 2247
1570 loop_init (EV_A_ flags); 2248 loop_init (EV_A_ flags);
1571 2249
1572 if (ev_backend (EV_A)) 2250 if (ev_backend (EV_A))
1573 { 2251 {
1574#ifndef _WIN32 2252#if EV_CHILD_ENABLE
1575 ev_signal_init (&childev, childcb, SIGCHLD); 2253 ev_signal_init (&childev, childcb, SIGCHLD);
1576 ev_set_priority (&childev, EV_MAXPRI); 2254 ev_set_priority (&childev, EV_MAXPRI);
1577 ev_signal_start (EV_A_ &childev); 2255 ev_signal_start (EV_A_ &childev);
1578 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2256 ev_unref (EV_A); /* child watcher should not keep loop alive */
1579#endif 2257#endif
… …
1584 2262
1585 return ev_default_loop_ptr; 2263 return ev_default_loop_ptr;
1586} 2264}
1587 2265
1588void 2266void
1589ev_default_destroy (void) 2267ev_loop_fork (EV_P)
1590{ 2268{
1591#if EV_MULTIPLICITY
1592 struct ev_loop *loop = ev_default_loop_ptr;
1593#endif
1594
1595#ifndef _WIN32
1596 ev_ref (EV_A); /* child watcher */
1597 ev_signal_stop (EV_A_ &childev);
1598#endif
1599
1600 loop_destroy (EV_A);
1601}
1602
1603void
1604ev_default_fork (void)
1605{
1606#if EV_MULTIPLICITY
1607 struct ev_loop *loop = ev_default_loop_ptr;
1608#endif
1609
1610 if (backend)
1611 postfork = 1; /* must be in line with ev_loop_fork */ 2269 postfork = 1; /* must be in line with ev_default_fork */
1612} 2270}
1613 2271
1614/*****************************************************************************/ 2272/*****************************************************************************/
1615 2273
1616void 2274void
1617ev_invoke (EV_P_ void *w, int revents) 2275ev_invoke (EV_P_ void *w, int revents)
1618{ 2276{
1619 EV_CB_INVOKE ((W)w, revents); 2277 EV_CB_INVOKE ((W)w, revents);
1620} 2278}
1621 2279
1622void inline_speed 2280unsigned int
1623call_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)
1624{ 2294{
1625 int pri; 2295 int pri;
1626 2296
1627 for (pri = NUMPRI; pri--; ) 2297 for (pri = NUMPRI; pri--; )
1628 while (pendingcnt [pri]) 2298 while (pendingcnt [pri])
1629 { 2299 {
1630 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2300 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1631 2301
1632 if (expect_true (p->w))
1633 {
1634 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1635
1636 p->w->pending = 0; 2302 p->w->pending = 0;
1637 EV_CB_INVOKE (p->w, p->events); 2303 EV_CB_INVOKE (p->w, p->events);
1638 EV_FREQUENT_CHECK; 2304 EV_FREQUENT_CHECK;
1639 }
1640 } 2305 }
1641} 2306}
1642 2307
1643#if EV_IDLE_ENABLE 2308#if EV_IDLE_ENABLE
1644void inline_size 2309/* make idle watchers pending. this handles the "call-idle */
2310/* only when higher priorities are idle" logic */
2311inline_size void
1645idle_reify (EV_P) 2312idle_reify (EV_P)
1646{ 2313{
1647 if (expect_false (idleall)) 2314 if (expect_false (idleall))
1648 { 2315 {
1649 int pri; 2316 int pri;
… …
1661 } 2328 }
1662 } 2329 }
1663} 2330}
1664#endif 2331#endif
1665 2332
1666void inline_size 2333/* make timers pending */
2334inline_size void
1667timers_reify (EV_P) 2335timers_reify (EV_P)
1668{ 2336{
1669 EV_FREQUENT_CHECK; 2337 EV_FREQUENT_CHECK;
1670 2338
1671 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2339 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1672 { 2340 {
1673 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2341 do
1674
1675 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1676
1677 /* first reschedule or stop timer */
1678 if (w->repeat)
1679 { 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 {
1680 ev_at (w) += w->repeat; 2350 ev_at (w) += w->repeat;
1681 if (ev_at (w) < mn_now) 2351 if (ev_at (w) < mn_now)
1682 ev_at (w) = mn_now; 2352 ev_at (w) = mn_now;
1683 2353
1684 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.));
1685 2355
1686 ANHE_at_cache (timers [HEAP0]); 2356 ANHE_at_cache (timers [HEAP0]);
1687 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);
1688 } 2364 }
1689 else 2365 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1690 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1691 2366
1692 EV_FREQUENT_CHECK; 2367 feed_reverse_done (EV_A_ EV_TIMER);
1693 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1694 } 2368 }
1695} 2369}
1696 2370
1697#if EV_PERIODIC_ENABLE 2371#if EV_PERIODIC_ENABLE
1698void 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
1699periodics_reify (EV_P) 2399periodics_reify (EV_P)
1700{ 2400{
1701 EV_FREQUENT_CHECK; 2401 EV_FREQUENT_CHECK;
1702 2402
1703 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2403 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1704 { 2404 {
1705 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2405 int feed_count = 0;
1706 2406
1707 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2407 do
1708
1709 /* first reschedule or stop timer */
1710 if (w->reschedule_cb)
1711 { 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 {
1712 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2416 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1713 2417
1714 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));
1715 2419
1716 ANHE_at_cache (periodics [HEAP0]); 2420 ANHE_at_cache (periodics [HEAP0]);
1717 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);
1718 } 2434 }
1719 else if (w->interval) 2435 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1720 {
1721 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1722 /* if next trigger time is not sufficiently in the future, put it there */
1723 /* this might happen because of floating point inexactness */
1724 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1725 {
1726 ev_at (w) += w->interval;
1727 2436
1728 /* if interval is unreasonably low we might still have a time in the past */
1729 /* so correct this. this will make the periodic very inexact, but the user */
1730 /* has effectively asked to get triggered more often than possible */
1731 if (ev_at (w) < ev_rt_now)
1732 ev_at (w) = ev_rt_now;
1733 }
1734
1735 ANHE_at_cache (periodics [HEAP0]);
1736 downheap (periodics, periodiccnt, HEAP0);
1737 }
1738 else
1739 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1740
1741 EV_FREQUENT_CHECK;
1742 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2437 feed_reverse_done (EV_A_ EV_PERIODIC);
1743 } 2438 }
1744} 2439}
1745 2440
2441/* simply recalculate all periodics */
2442/* TODO: maybe ensure that at least one event happens when jumping forward? */
1746static void noinline 2443static void noinline ecb_cold
1747periodics_reschedule (EV_P) 2444periodics_reschedule (EV_P)
1748{ 2445{
1749 int i; 2446 int i;
1750 2447
1751 /* adjust periodics after time jump */ 2448 /* adjust periodics after time jump */
… …
1754 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2451 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1755 2452
1756 if (w->reschedule_cb) 2453 if (w->reschedule_cb)
1757 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2454 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1758 else if (w->interval) 2455 else if (w->interval)
1759 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2456 periodic_recalc (EV_A_ w);
1760 2457
1761 ANHE_at_cache (periodics [i]); 2458 ANHE_at_cache (periodics [i]);
1762 } 2459 }
1763 2460
1764 reheap (periodics, periodiccnt); 2461 reheap (periodics, periodiccnt);
1765} 2462}
1766#endif 2463#endif
1767 2464
1768void 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
1769time_update (EV_P_ ev_tstamp max_block) 2482time_update (EV_P_ ev_tstamp max_block)
1770{ 2483{
1771 int i;
1772
1773#if EV_USE_MONOTONIC 2484#if EV_USE_MONOTONIC
1774 if (expect_true (have_monotonic)) 2485 if (expect_true (have_monotonic))
1775 { 2486 {
2487 int i;
1776 ev_tstamp odiff = rtmn_diff; 2488 ev_tstamp odiff = rtmn_diff;
1777 2489
1778 mn_now = get_clock (); 2490 mn_now = get_clock ();
1779 2491
1780 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2492 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1796 * 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
1797 * in the unlikely event of having been preempted here. 2509 * in the unlikely event of having been preempted here.
1798 */ 2510 */
1799 for (i = 4; --i; ) 2511 for (i = 4; --i; )
1800 { 2512 {
2513 ev_tstamp diff;
1801 rtmn_diff = ev_rt_now - mn_now; 2514 rtmn_diff = ev_rt_now - mn_now;
1802 2515
2516 diff = odiff - rtmn_diff;
2517
1803 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2518 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1804 return; /* all is well */ 2519 return; /* all is well */
1805 2520
1806 ev_rt_now = ev_time (); 2521 ev_rt_now = ev_time ();
1807 mn_now = get_clock (); 2522 mn_now = get_clock ();
1808 now_floor = mn_now; 2523 now_floor = mn_now;
1809 } 2524 }
1810 2525
2526 /* no timer adjustment, as the monotonic clock doesn't jump */
2527 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1811# if EV_PERIODIC_ENABLE 2528# if EV_PERIODIC_ENABLE
1812 periodics_reschedule (EV_A); 2529 periodics_reschedule (EV_A);
1813# endif 2530# endif
1814 /* no timer adjustment, as the monotonic clock doesn't jump */
1815 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1816 } 2531 }
1817 else 2532 else
1818#endif 2533#endif
1819 { 2534 {
1820 ev_rt_now = ev_time (); 2535 ev_rt_now = ev_time ();
1821 2536
1822 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))
1823 { 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);
1824#if EV_PERIODIC_ENABLE 2541#if EV_PERIODIC_ENABLE
1825 periodics_reschedule (EV_A); 2542 periodics_reschedule (EV_A);
1826#endif 2543#endif
1827 /* adjust timers. this is easy, as the offset is the same for all of them */
1828 for (i = 0; i < timercnt; ++i)
1829 {
1830 ANHE *he = timers + i + HEAP0;
1831 ANHE_w (*he)->at += ev_rt_now - mn_now;
1832 ANHE_at_cache (*he);
1833 }
1834 } 2544 }
1835 2545
1836 mn_now = ev_rt_now; 2546 mn_now = ev_rt_now;
1837 } 2547 }
1838} 2548}
1839 2549
1840void 2550void
1841ev_ref (EV_P)
1842{
1843 ++activecnt;
1844}
1845
1846void
1847ev_unref (EV_P)
1848{
1849 --activecnt;
1850}
1851
1852static int loop_done;
1853
1854void
1855ev_loop (EV_P_ int flags) 2551ev_run (EV_P_ int flags)
1856{ 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
1857 loop_done = EVUNLOOP_CANCEL; 2559 loop_done = EVBREAK_CANCEL;
1858 2560
1859 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 */
1860 2562
1861 do 2563 do
1862 { 2564 {
1863#if EV_VERIFY >= 2 2565#if EV_VERIFY >= 2
1864 ev_loop_verify (EV_A); 2566 ev_verify (EV_A);
1865#endif 2567#endif
1866 2568
1867#ifndef _WIN32 2569#ifndef _WIN32
1868 if (expect_false (curpid)) /* penalise the forking check even more */ 2570 if (expect_false (curpid)) /* penalise the forking check even more */
1869 if (expect_false (getpid () != curpid)) 2571 if (expect_false (getpid () != curpid))
… …
1877 /* we might have forked, so queue fork handlers */ 2579 /* we might have forked, so queue fork handlers */
1878 if (expect_false (postfork)) 2580 if (expect_false (postfork))
1879 if (forkcnt) 2581 if (forkcnt)
1880 { 2582 {
1881 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2583 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1882 call_pending (EV_A); 2584 EV_INVOKE_PENDING;
1883 } 2585 }
1884#endif 2586#endif
1885 2587
2588#if EV_PREPARE_ENABLE
1886 /* queue prepare watchers (and execute them) */ 2589 /* queue prepare watchers (and execute them) */
1887 if (expect_false (preparecnt)) 2590 if (expect_false (preparecnt))
1888 { 2591 {
1889 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2592 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1890 call_pending (EV_A); 2593 EV_INVOKE_PENDING;
1891 } 2594 }
2595#endif
1892 2596
1893 if (expect_false (!activecnt)) 2597 if (expect_false (loop_done))
1894 break; 2598 break;
1895 2599
1896 /* we might have forked, so reify kernel state if necessary */ 2600 /* we might have forked, so reify kernel state if necessary */
1897 if (expect_false (postfork)) 2601 if (expect_false (postfork))
1898 loop_fork (EV_A); 2602 loop_fork (EV_A);
… …
1903 /* calculate blocking time */ 2607 /* calculate blocking time */
1904 { 2608 {
1905 ev_tstamp waittime = 0.; 2609 ev_tstamp waittime = 0.;
1906 ev_tstamp sleeptime = 0.; 2610 ev_tstamp sleeptime = 0.;
1907 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;
2622
1908 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2623 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1909 { 2624 {
1910 /* update time to cancel out callback processing overhead */
1911 time_update (EV_A_ 1e100);
1912
1913 waittime = MAX_BLOCKTIME; 2625 waittime = MAX_BLOCKTIME;
1914 2626
1915 if (timercnt) 2627 if (timercnt)
1916 { 2628 {
1917 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2629 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1918 if (waittime > to) waittime = to; 2630 if (waittime > to) waittime = to;
1919 } 2631 }
1920 2632
1921#if EV_PERIODIC_ENABLE 2633#if EV_PERIODIC_ENABLE
1922 if (periodiccnt) 2634 if (periodiccnt)
1923 { 2635 {
1924 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2636 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1925 if (waittime > to) waittime = to; 2637 if (waittime > to) waittime = to;
1926 } 2638 }
1927#endif 2639#endif
1928 2640
2641 /* don't let timeouts decrease the waittime below timeout_blocktime */
1929 if (expect_false (waittime < timeout_blocktime)) 2642 if (expect_false (waittime < timeout_blocktime))
1930 waittime = timeout_blocktime; 2643 waittime = timeout_blocktime;
1931 2644
1932 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;
1933 2649
2650 /* extra check because io_blocktime is commonly 0 */
1934 if (expect_true (sleeptime > io_blocktime)) 2651 if (expect_false (io_blocktime))
1935 sleeptime = io_blocktime;
1936
1937 if (sleeptime)
1938 { 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 {
1939 ev_sleep (sleeptime); 2660 ev_sleep (sleeptime);
1940 waittime -= sleeptime; 2661 waittime -= sleeptime;
2662 }
1941 } 2663 }
1942 } 2664 }
1943 2665
2666#if EV_FEATURE_API
1944 ++loop_count; 2667 ++loop_count;
2668#endif
2669 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1945 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;
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
1946 2681
1947 /* update ev_rt_now, do magic */ 2682 /* update ev_rt_now, do magic */
1948 time_update (EV_A_ waittime + sleeptime); 2683 time_update (EV_A_ waittime + sleeptime);
1949 } 2684 }
1950 2685
… …
1957#if EV_IDLE_ENABLE 2692#if EV_IDLE_ENABLE
1958 /* queue idle watchers unless other events are pending */ 2693 /* queue idle watchers unless other events are pending */
1959 idle_reify (EV_A); 2694 idle_reify (EV_A);
1960#endif 2695#endif
1961 2696
2697#if EV_CHECK_ENABLE
1962 /* queue check watchers, to be executed first */ 2698 /* queue check watchers, to be executed first */
1963 if (expect_false (checkcnt)) 2699 if (expect_false (checkcnt))
1964 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2700 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2701#endif
1965 2702
1966 call_pending (EV_A); 2703 EV_INVOKE_PENDING;
1967 } 2704 }
1968 while (expect_true ( 2705 while (expect_true (
1969 activecnt 2706 activecnt
1970 && !loop_done 2707 && !loop_done
1971 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2708 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1972 )); 2709 ));
1973 2710
1974 if (loop_done == EVUNLOOP_ONE) 2711 if (loop_done == EVBREAK_ONE)
1975 loop_done = EVUNLOOP_CANCEL; 2712 loop_done = EVBREAK_CANCEL;
2713
2714#if EV_FEATURE_API
2715 --loop_depth;
2716#endif
1976} 2717}
1977 2718
1978void 2719void
1979ev_unloop (EV_P_ int how) 2720ev_break (EV_P_ int how)
1980{ 2721{
1981 loop_done = how; 2722 loop_done = how;
1982} 2723}
1983 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
1984/*****************************************************************************/ 2762/*****************************************************************************/
2763/* singly-linked list management, used when the expected list length is short */
1985 2764
1986void inline_size 2765inline_size void
1987wlist_add (WL *head, WL elem) 2766wlist_add (WL *head, WL elem)
1988{ 2767{
1989 elem->next = *head; 2768 elem->next = *head;
1990 *head = elem; 2769 *head = elem;
1991} 2770}
1992 2771
1993void inline_size 2772inline_size void
1994wlist_del (WL *head, WL elem) 2773wlist_del (WL *head, WL elem)
1995{ 2774{
1996 while (*head) 2775 while (*head)
1997 { 2776 {
1998 if (*head == elem) 2777 if (expect_true (*head == elem))
1999 { 2778 {
2000 *head = elem->next; 2779 *head = elem->next;
2001 return; 2780 break;
2002 } 2781 }
2003 2782
2004 head = &(*head)->next; 2783 head = &(*head)->next;
2005 } 2784 }
2006} 2785}
2007 2786
2008void inline_speed 2787/* internal, faster, version of ev_clear_pending */
2788inline_speed void
2009clear_pending (EV_P_ W w) 2789clear_pending (EV_P_ W w)
2010{ 2790{
2011 if (w->pending) 2791 if (w->pending)
2012 { 2792 {
2013 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2793 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2014 w->pending = 0; 2794 w->pending = 0;
2015 } 2795 }
2016} 2796}
2017 2797
2018int 2798int
… …
2022 int pending = w_->pending; 2802 int pending = w_->pending;
2023 2803
2024 if (expect_true (pending)) 2804 if (expect_true (pending))
2025 { 2805 {
2026 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2806 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2807 p->w = (W)&pending_w;
2027 w_->pending = 0; 2808 w_->pending = 0;
2028 p->w = 0;
2029 return p->events; 2809 return p->events;
2030 } 2810 }
2031 else 2811 else
2032 return 0; 2812 return 0;
2033} 2813}
2034 2814
2035void inline_size 2815inline_size void
2036pri_adjust (EV_P_ W w) 2816pri_adjust (EV_P_ W w)
2037{ 2817{
2038 int pri = w->priority; 2818 int pri = ev_priority (w);
2039 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2819 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2040 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2820 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2041 w->priority = pri; 2821 ev_set_priority (w, pri);
2042} 2822}
2043 2823
2044void inline_speed 2824inline_speed void
2045ev_start (EV_P_ W w, int active) 2825ev_start (EV_P_ W w, int active)
2046{ 2826{
2047 pri_adjust (EV_A_ w); 2827 pri_adjust (EV_A_ w);
2048 w->active = active; 2828 w->active = active;
2049 ev_ref (EV_A); 2829 ev_ref (EV_A);
2050} 2830}
2051 2831
2052void inline_size 2832inline_size void
2053ev_stop (EV_P_ W w) 2833ev_stop (EV_P_ W w)
2054{ 2834{
2055 ev_unref (EV_A); 2835 ev_unref (EV_A);
2056 w->active = 0; 2836 w->active = 0;
2057} 2837}
… …
2064 int fd = w->fd; 2844 int fd = w->fd;
2065 2845
2066 if (expect_false (ev_is_active (w))) 2846 if (expect_false (ev_is_active (w)))
2067 return; 2847 return;
2068 2848
2069 assert (("ev_io_start called with negative fd", fd >= 0)); 2849 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2850 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2070 2851
2071 EV_FREQUENT_CHECK; 2852 EV_FREQUENT_CHECK;
2072 2853
2073 ev_start (EV_A_ (W)w, 1); 2854 ev_start (EV_A_ (W)w, 1);
2074 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2855 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2075 wlist_add (&anfds[fd].head, (WL)w); 2856 wlist_add (&anfds[fd].head, (WL)w);
2076 2857
2077 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2858 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2078 w->events &= ~EV_IOFDSET; 2859 w->events &= ~EV__IOFDSET;
2079 2860
2080 EV_FREQUENT_CHECK; 2861 EV_FREQUENT_CHECK;
2081} 2862}
2082 2863
2083void noinline 2864void noinline
… …
2085{ 2866{
2086 clear_pending (EV_A_ (W)w); 2867 clear_pending (EV_A_ (W)w);
2087 if (expect_false (!ev_is_active (w))) 2868 if (expect_false (!ev_is_active (w)))
2088 return; 2869 return;
2089 2870
2090 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));
2091 2872
2092 EV_FREQUENT_CHECK; 2873 EV_FREQUENT_CHECK;
2093 2874
2094 wlist_del (&anfds[w->fd].head, (WL)w); 2875 wlist_del (&anfds[w->fd].head, (WL)w);
2095 ev_stop (EV_A_ (W)w); 2876 ev_stop (EV_A_ (W)w);
2096 2877
2097 fd_change (EV_A_ w->fd, 1); 2878 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2098 2879
2099 EV_FREQUENT_CHECK; 2880 EV_FREQUENT_CHECK;
2100} 2881}
2101 2882
2102void noinline 2883void noinline
… …
2105 if (expect_false (ev_is_active (w))) 2886 if (expect_false (ev_is_active (w)))
2106 return; 2887 return;
2107 2888
2108 ev_at (w) += mn_now; 2889 ev_at (w) += mn_now;
2109 2890
2110 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.));
2111 2892
2112 EV_FREQUENT_CHECK; 2893 EV_FREQUENT_CHECK;
2113 2894
2114 ++timercnt; 2895 ++timercnt;
2115 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2896 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2118 ANHE_at_cache (timers [ev_active (w)]); 2899 ANHE_at_cache (timers [ev_active (w)]);
2119 upheap (timers, ev_active (w)); 2900 upheap (timers, ev_active (w));
2120 2901
2121 EV_FREQUENT_CHECK; 2902 EV_FREQUENT_CHECK;
2122 2903
2123 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2904 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2124} 2905}
2125 2906
2126void noinline 2907void noinline
2127ev_timer_stop (EV_P_ ev_timer *w) 2908ev_timer_stop (EV_P_ ev_timer *w)
2128{ 2909{
… …
2133 EV_FREQUENT_CHECK; 2914 EV_FREQUENT_CHECK;
2134 2915
2135 { 2916 {
2136 int active = ev_active (w); 2917 int active = ev_active (w);
2137 2918
2138 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2919 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2139 2920
2140 --timercnt; 2921 --timercnt;
2141 2922
2142 if (expect_true (active < timercnt + HEAP0)) 2923 if (expect_true (active < timercnt + HEAP0))
2143 { 2924 {
2144 timers [active] = timers [timercnt + HEAP0]; 2925 timers [active] = timers [timercnt + HEAP0];
2145 adjustheap (timers, timercnt, active); 2926 adjustheap (timers, timercnt, active);
2146 } 2927 }
2147 } 2928 }
2148 2929
2149 EV_FREQUENT_CHECK;
2150
2151 ev_at (w) -= mn_now; 2930 ev_at (w) -= mn_now;
2152 2931
2153 ev_stop (EV_A_ (W)w); 2932 ev_stop (EV_A_ (W)w);
2933
2934 EV_FREQUENT_CHECK;
2154} 2935}
2155 2936
2156void noinline 2937void noinline
2157ev_timer_again (EV_P_ ev_timer *w) 2938ev_timer_again (EV_P_ ev_timer *w)
2158{ 2939{
… …
2176 } 2957 }
2177 2958
2178 EV_FREQUENT_CHECK; 2959 EV_FREQUENT_CHECK;
2179} 2960}
2180 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
2181#if EV_PERIODIC_ENABLE 2968#if EV_PERIODIC_ENABLE
2182void noinline 2969void noinline
2183ev_periodic_start (EV_P_ ev_periodic *w) 2970ev_periodic_start (EV_P_ ev_periodic *w)
2184{ 2971{
2185 if (expect_false (ev_is_active (w))) 2972 if (expect_false (ev_is_active (w)))
… …
2187 2974
2188 if (w->reschedule_cb) 2975 if (w->reschedule_cb)
2189 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2976 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2190 else if (w->interval) 2977 else if (w->interval)
2191 { 2978 {
2192 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.));
2193 /* this formula differs from the one in periodic_reify because we do not always round up */ 2980 periodic_recalc (EV_A_ w);
2194 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2195 } 2981 }
2196 else 2982 else
2197 ev_at (w) = w->offset; 2983 ev_at (w) = w->offset;
2198 2984
2199 EV_FREQUENT_CHECK; 2985 EV_FREQUENT_CHECK;
… …
2205 ANHE_at_cache (periodics [ev_active (w)]); 2991 ANHE_at_cache (periodics [ev_active (w)]);
2206 upheap (periodics, ev_active (w)); 2992 upheap (periodics, ev_active (w));
2207 2993
2208 EV_FREQUENT_CHECK; 2994 EV_FREQUENT_CHECK;
2209 2995
2210 /*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));*/
2211} 2997}
2212 2998
2213void noinline 2999void noinline
2214ev_periodic_stop (EV_P_ ev_periodic *w) 3000ev_periodic_stop (EV_P_ ev_periodic *w)
2215{ 3001{
… …
2220 EV_FREQUENT_CHECK; 3006 EV_FREQUENT_CHECK;
2221 3007
2222 { 3008 {
2223 int active = ev_active (w); 3009 int active = ev_active (w);
2224 3010
2225 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 3011 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2226 3012
2227 --periodiccnt; 3013 --periodiccnt;
2228 3014
2229 if (expect_true (active < periodiccnt + HEAP0)) 3015 if (expect_true (active < periodiccnt + HEAP0))
2230 { 3016 {
2231 periodics [active] = periodics [periodiccnt + HEAP0]; 3017 periodics [active] = periodics [periodiccnt + HEAP0];
2232 adjustheap (periodics, periodiccnt, active); 3018 adjustheap (periodics, periodiccnt, active);
2233 } 3019 }
2234 } 3020 }
2235 3021
2236 EV_FREQUENT_CHECK;
2237
2238 ev_stop (EV_A_ (W)w); 3022 ev_stop (EV_A_ (W)w);
3023
3024 EV_FREQUENT_CHECK;
2239} 3025}
2240 3026
2241void noinline 3027void noinline
2242ev_periodic_again (EV_P_ ev_periodic *w) 3028ev_periodic_again (EV_P_ ev_periodic *w)
2243{ 3029{
… …
2249 3035
2250#ifndef SA_RESTART 3036#ifndef SA_RESTART
2251# define SA_RESTART 0 3037# define SA_RESTART 0
2252#endif 3038#endif
2253 3039
3040#if EV_SIGNAL_ENABLE
3041
2254void noinline 3042void noinline
2255ev_signal_start (EV_P_ ev_signal *w) 3043ev_signal_start (EV_P_ ev_signal *w)
2256{ 3044{
2257#if EV_MULTIPLICITY
2258 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2259#endif
2260 if (expect_false (ev_is_active (w))) 3045 if (expect_false (ev_is_active (w)))
2261 return; 3046 return;
2262 3047
2263 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));
2264 3049
2265 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));
2266 3053
2267 EV_FREQUENT_CHECK; 3054 signals [w->signum - 1].loop = EV_A;
3055#endif
2268 3056
3057 EV_FREQUENT_CHECK;
3058
3059#if EV_USE_SIGNALFD
3060 if (sigfd == -2)
2269 { 3061 {
2270#ifndef _WIN32 3062 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2271 sigset_t full, prev; 3063 if (sigfd < 0 && errno == EINVAL)
2272 sigfillset (&full); 3064 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2273 sigprocmask (SIG_SETMASK, &full, &prev);
2274#endif
2275 3065
2276 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3066 if (sigfd >= 0)
3067 {
3068 fd_intern (sigfd); /* doing it twice will not hurt */
2277 3069
2278#ifndef _WIN32 3070 sigemptyset (&sigfd_set);
2279 sigprocmask (SIG_SETMASK, &prev, 0); 3071
2280#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 }
2281 } 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
2282 3088
2283 ev_start (EV_A_ (W)w, 1); 3089 ev_start (EV_A_ (W)w, 1);
2284 wlist_add (&signals [w->signum - 1].head, (WL)w); 3090 wlist_add (&signals [w->signum - 1].head, (WL)w);
2285 3091
2286 if (!((WL)w)->next) 3092 if (!((WL)w)->next)
3093# if EV_USE_SIGNALFD
3094 if (sigfd < 0) /*TODO*/
3095# endif
2287 { 3096 {
2288#if _WIN32 3097# ifdef _WIN32
3098 evpipe_init (EV_A);
3099
2289 signal (w->signum, ev_sighandler); 3100 signal (w->signum, ev_sighandler);
2290#else 3101# else
2291 struct sigaction sa; 3102 struct sigaction sa;
3103
3104 evpipe_init (EV_A);
3105
2292 sa.sa_handler = ev_sighandler; 3106 sa.sa_handler = ev_sighandler;
2293 sigfillset (&sa.sa_mask); 3107 sigfillset (&sa.sa_mask);
2294 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 */
2295 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 }
2296#endif 3117#endif
2297 } 3118 }
2298 3119
2299 EV_FREQUENT_CHECK; 3120 EV_FREQUENT_CHECK;
2300} 3121}
2301 3122
2302void noinline 3123void noinline
… …
2310 3131
2311 wlist_del (&signals [w->signum - 1].head, (WL)w); 3132 wlist_del (&signals [w->signum - 1].head, (WL)w);
2312 ev_stop (EV_A_ (W)w); 3133 ev_stop (EV_A_ (W)w);
2313 3134
2314 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
2315 signal (w->signum, SIG_DFL); 3154 signal (w->signum, SIG_DFL);
3155 }
2316 3156
2317 EV_FREQUENT_CHECK; 3157 EV_FREQUENT_CHECK;
2318} 3158}
3159
3160#endif
3161
3162#if EV_CHILD_ENABLE
2319 3163
2320void 3164void
2321ev_child_start (EV_P_ ev_child *w) 3165ev_child_start (EV_P_ ev_child *w)
2322{ 3166{
2323#if EV_MULTIPLICITY 3167#if EV_MULTIPLICITY
2324 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));
2325#endif 3169#endif
2326 if (expect_false (ev_is_active (w))) 3170 if (expect_false (ev_is_active (w)))
2327 return; 3171 return;
2328 3172
2329 EV_FREQUENT_CHECK; 3173 EV_FREQUENT_CHECK;
2330 3174
2331 ev_start (EV_A_ (W)w, 1); 3175 ev_start (EV_A_ (W)w, 1);
2332 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3176 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2333 3177
2334 EV_FREQUENT_CHECK; 3178 EV_FREQUENT_CHECK;
2335} 3179}
2336 3180
2337void 3181void
… …
2341 if (expect_false (!ev_is_active (w))) 3185 if (expect_false (!ev_is_active (w)))
2342 return; 3186 return;
2343 3187
2344 EV_FREQUENT_CHECK; 3188 EV_FREQUENT_CHECK;
2345 3189
2346 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3190 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2347 ev_stop (EV_A_ (W)w); 3191 ev_stop (EV_A_ (W)w);
2348 3192
2349 EV_FREQUENT_CHECK; 3193 EV_FREQUENT_CHECK;
2350} 3194}
3195
3196#endif
2351 3197
2352#if EV_STAT_ENABLE 3198#if EV_STAT_ENABLE
2353 3199
2354# ifdef _WIN32 3200# ifdef _WIN32
2355# undef lstat 3201# undef lstat
2356# define lstat(a,b) _stati64 (a,b) 3202# define lstat(a,b) _stati64 (a,b)
2357# endif 3203# endif
2358 3204
2359#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 */
2360#define MIN_STAT_INTERVAL 0.1074891 3207#define MIN_STAT_INTERVAL 0.1074891
2361 3208
2362static 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);
2363 3210
2364#if EV_USE_INOTIFY 3211#if EV_USE_INOTIFY
2365# 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)
2366 3215
2367static void noinline 3216static void noinline
2368infy_add (EV_P_ ev_stat *w) 3217infy_add (EV_P_ ev_stat *w)
2369{ 3218{
2370 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);
2371 3220
2372 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 */
2373 { 3241 }
2374 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;
2375 3246
2376 /* monitor some parent directory for speedup hints */ 3247 /* if path is not there, monitor some parent directory for speedup hints */
2377 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3248 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2378 /* but an efficiency issue only */ 3249 /* but an efficiency issue only */
2379 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3250 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2380 { 3251 {
2381 char path [4096]; 3252 char path [4096];
2382 strcpy (path, w->path); 3253 strcpy (path, w->path);
… …
2386 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3257 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2387 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3258 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2388 3259
2389 char *pend = strrchr (path, '/'); 3260 char *pend = strrchr (path, '/');
2390 3261
2391 if (!pend) 3262 if (!pend || pend == path)
2392 break; /* whoops, no '/', complain to your admin */ 3263 break;
2393 3264
2394 *pend = 0; 3265 *pend = 0;
2395 w->wd = inotify_add_watch (fs_fd, path, mask); 3266 w->wd = inotify_add_watch (fs_fd, path, mask);
2396 } 3267 }
2397 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3268 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2398 } 3269 }
2399 } 3270 }
2400 else
2401 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2402 3271
2403 if (w->wd >= 0) 3272 if (w->wd >= 0)
2404 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);
2405} 3279}
2406 3280
2407static void noinline 3281static void noinline
2408infy_del (EV_P_ ev_stat *w) 3282infy_del (EV_P_ ev_stat *w)
2409{ 3283{
… …
2412 3286
2413 if (wd < 0) 3287 if (wd < 0)
2414 return; 3288 return;
2415 3289
2416 w->wd = -2; 3290 w->wd = -2;
2417 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3291 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2418 wlist_del (&fs_hash [slot].head, (WL)w); 3292 wlist_del (&fs_hash [slot].head, (WL)w);
2419 3293
2420 /* remove this watcher, if others are watching it, they will rearm */ 3294 /* remove this watcher, if others are watching it, they will rearm */
2421 inotify_rm_watch (fs_fd, wd); 3295 inotify_rm_watch (fs_fd, wd);
2422} 3296}
2423 3297
2424static void noinline 3298static void noinline
2425infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3299infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2426{ 3300{
2427 if (slot < 0) 3301 if (slot < 0)
2428 /* overflow, need to check for all hahs slots */ 3302 /* overflow, need to check for all hash slots */
2429 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3303 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2430 infy_wd (EV_A_ slot, wd, ev); 3304 infy_wd (EV_A_ slot, wd, ev);
2431 else 3305 else
2432 { 3306 {
2433 WL w_; 3307 WL w_;
2434 3308
2435 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3309 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2436 { 3310 {
2437 ev_stat *w = (ev_stat *)w_; 3311 ev_stat *w = (ev_stat *)w_;
2438 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 */
2439 3313
2440 if (w->wd == wd || wd == -1) 3314 if (w->wd == wd || wd == -1)
2441 { 3315 {
2442 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3316 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2443 { 3317 {
3318 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2444 w->wd = -1; 3319 w->wd = -1;
2445 infy_add (EV_A_ w); /* re-add, no matter what */ 3320 infy_add (EV_A_ w); /* re-add, no matter what */
2446 } 3321 }
2447 3322
2448 stat_timer_cb (EV_A_ &w->timer, 0); 3323 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2453 3328
2454static void 3329static void
2455infy_cb (EV_P_ ev_io *w, int revents) 3330infy_cb (EV_P_ ev_io *w, int revents)
2456{ 3331{
2457 char buf [EV_INOTIFY_BUFSIZE]; 3332 char buf [EV_INOTIFY_BUFSIZE];
2458 struct inotify_event *ev = (struct inotify_event *)buf;
2459 int ofs; 3333 int ofs;
2460 int len = read (fs_fd, buf, sizeof (buf)); 3334 int len = read (fs_fd, buf, sizeof (buf));
2461 3335
2462 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);
2463 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 }
2464} 3342}
2465 3343
2466void inline_size 3344inline_size void ecb_cold
3345ev_check_2625 (EV_P)
3346{
3347 /* kernels < 2.6.25 are borked
3348 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3349 */
3350 if (ev_linux_version () < 0x020619)
3351 return;
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
2467infy_init (EV_P) 3368infy_init (EV_P)
2468{ 3369{
2469 if (fs_fd != -2) 3370 if (fs_fd != -2)
2470 return; 3371 return;
2471 3372
3373 fs_fd = -1;
3374
3375 ev_check_2625 (EV_A);
3376
2472 fs_fd = inotify_init (); 3377 fs_fd = infy_newfd ();
2473 3378
2474 if (fs_fd >= 0) 3379 if (fs_fd >= 0)
2475 { 3380 {
3381 fd_intern (fs_fd);
2476 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3382 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2477 ev_set_priority (&fs_w, EV_MAXPRI); 3383 ev_set_priority (&fs_w, EV_MAXPRI);
2478 ev_io_start (EV_A_ &fs_w); 3384 ev_io_start (EV_A_ &fs_w);
3385 ev_unref (EV_A);
2479 } 3386 }
2480} 3387}
2481 3388
2482void inline_size 3389inline_size void
2483infy_fork (EV_P) 3390infy_fork (EV_P)
2484{ 3391{
2485 int slot; 3392 int slot;
2486 3393
2487 if (fs_fd < 0) 3394 if (fs_fd < 0)
2488 return; 3395 return;
2489 3396
3397 ev_ref (EV_A);
3398 ev_io_stop (EV_A_ &fs_w);
2490 close (fs_fd); 3399 close (fs_fd);
2491 fs_fd = inotify_init (); 3400 fs_fd = infy_newfd ();
2492 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
2493 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3410 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2494 { 3411 {
2495 WL w_ = fs_hash [slot].head; 3412 WL w_ = fs_hash [slot].head;
2496 fs_hash [slot].head = 0; 3413 fs_hash [slot].head = 0;
2497 3414
2498 while (w_) 3415 while (w_)
… …
2503 w->wd = -1; 3420 w->wd = -1;
2504 3421
2505 if (fs_fd >= 0) 3422 if (fs_fd >= 0)
2506 infy_add (EV_A_ w); /* re-add, no matter what */ 3423 infy_add (EV_A_ w); /* re-add, no matter what */
2507 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);
2508 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 }
2509 } 3431 }
2510
2511 } 3432 }
2512} 3433}
2513 3434
3435#endif
3436
3437#ifdef _WIN32
3438# define EV_LSTAT(p,b) _stati64 (p, b)
3439#else
3440# define EV_LSTAT(p,b) lstat (p, b)
2514#endif 3441#endif
2515 3442
2516void 3443void
2517ev_stat_stat (EV_P_ ev_stat *w) 3444ev_stat_stat (EV_P_ ev_stat *w)
2518{ 3445{
… …
2525static void noinline 3452static void noinline
2526stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3453stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2527{ 3454{
2528 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3455 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2529 3456
2530 /* we copy this here each the time so that */ 3457 ev_statdata prev = w->attr;
2531 /* prev has the old value when the callback gets invoked */
2532 w->prev = w->attr;
2533 ev_stat_stat (EV_A_ w); 3458 ev_stat_stat (EV_A_ w);
2534 3459
2535 /* 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 */
2536 if ( 3461 if (
2537 w->prev.st_dev != w->attr.st_dev 3462 prev.st_dev != w->attr.st_dev
2538 || w->prev.st_ino != w->attr.st_ino 3463 || prev.st_ino != w->attr.st_ino
2539 || w->prev.st_mode != w->attr.st_mode 3464 || prev.st_mode != w->attr.st_mode
2540 || w->prev.st_nlink != w->attr.st_nlink 3465 || prev.st_nlink != w->attr.st_nlink
2541 || w->prev.st_uid != w->attr.st_uid 3466 || prev.st_uid != w->attr.st_uid
2542 || w->prev.st_gid != w->attr.st_gid 3467 || prev.st_gid != w->attr.st_gid
2543 || w->prev.st_rdev != w->attr.st_rdev 3468 || prev.st_rdev != w->attr.st_rdev
2544 || w->prev.st_size != w->attr.st_size 3469 || prev.st_size != w->attr.st_size
2545 || w->prev.st_atime != w->attr.st_atime 3470 || prev.st_atime != w->attr.st_atime
2546 || w->prev.st_mtime != w->attr.st_mtime 3471 || prev.st_mtime != w->attr.st_mtime
2547 || w->prev.st_ctime != w->attr.st_ctime 3472 || prev.st_ctime != w->attr.st_ctime
2548 ) { 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
2549 #if EV_USE_INOTIFY 3479 #if EV_USE_INOTIFY
3480 if (fs_fd >= 0)
3481 {
2550 infy_del (EV_A_ w); 3482 infy_del (EV_A_ w);
2551 infy_add (EV_A_ w); 3483 infy_add (EV_A_ w);
2552 ev_stat_stat (EV_A_ w); /* avoid race... */ 3484 ev_stat_stat (EV_A_ w); /* avoid race... */
3485 }
2553 #endif 3486 #endif
2554 3487
2555 ev_feed_event (EV_A_ w, EV_STAT); 3488 ev_feed_event (EV_A_ w, EV_STAT);
2556 } 3489 }
2557} 3490}
… …
2560ev_stat_start (EV_P_ ev_stat *w) 3493ev_stat_start (EV_P_ ev_stat *w)
2561{ 3494{
2562 if (expect_false (ev_is_active (w))) 3495 if (expect_false (ev_is_active (w)))
2563 return; 3496 return;
2564 3497
2565 /* since we use memcmp, we need to clear any padding data etc. */
2566 memset (&w->prev, 0, sizeof (ev_statdata));
2567 memset (&w->attr, 0, sizeof (ev_statdata));
2568
2569 ev_stat_stat (EV_A_ w); 3498 ev_stat_stat (EV_A_ w);
2570 3499
3500 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2571 if (w->interval < MIN_STAT_INTERVAL) 3501 w->interval = MIN_STAT_INTERVAL;
2572 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2573 3502
2574 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);
2575 ev_set_priority (&w->timer, ev_priority (w)); 3504 ev_set_priority (&w->timer, ev_priority (w));
2576 3505
2577#if EV_USE_INOTIFY 3506#if EV_USE_INOTIFY
2578 infy_init (EV_A); 3507 infy_init (EV_A);
2579 3508
2580 if (fs_fd >= 0) 3509 if (fs_fd >= 0)
2581 infy_add (EV_A_ w); 3510 infy_add (EV_A_ w);
2582 else 3511 else
2583#endif 3512#endif
3513 {
2584 ev_timer_start (EV_A_ &w->timer); 3514 ev_timer_again (EV_A_ &w->timer);
3515 ev_unref (EV_A);
3516 }
2585 3517
2586 ev_start (EV_A_ (W)w, 1); 3518 ev_start (EV_A_ (W)w, 1);
2587 3519
2588 EV_FREQUENT_CHECK; 3520 EV_FREQUENT_CHECK;
2589} 3521}
… …
2598 EV_FREQUENT_CHECK; 3530 EV_FREQUENT_CHECK;
2599 3531
2600#if EV_USE_INOTIFY 3532#if EV_USE_INOTIFY
2601 infy_del (EV_A_ w); 3533 infy_del (EV_A_ w);
2602#endif 3534#endif
3535
3536 if (ev_is_active (&w->timer))
3537 {
3538 ev_ref (EV_A);
2603 ev_timer_stop (EV_A_ &w->timer); 3539 ev_timer_stop (EV_A_ &w->timer);
3540 }
2604 3541
2605 ev_stop (EV_A_ (W)w); 3542 ev_stop (EV_A_ (W)w);
2606 3543
2607 EV_FREQUENT_CHECK; 3544 EV_FREQUENT_CHECK;
2608} 3545}
… …
2653 3590
2654 EV_FREQUENT_CHECK; 3591 EV_FREQUENT_CHECK;
2655} 3592}
2656#endif 3593#endif
2657 3594
3595#if EV_PREPARE_ENABLE
2658void 3596void
2659ev_prepare_start (EV_P_ ev_prepare *w) 3597ev_prepare_start (EV_P_ ev_prepare *w)
2660{ 3598{
2661 if (expect_false (ev_is_active (w))) 3599 if (expect_false (ev_is_active (w)))
2662 return; 3600 return;
… …
2688 3626
2689 ev_stop (EV_A_ (W)w); 3627 ev_stop (EV_A_ (W)w);
2690 3628
2691 EV_FREQUENT_CHECK; 3629 EV_FREQUENT_CHECK;
2692} 3630}
3631#endif
2693 3632
3633#if EV_CHECK_ENABLE
2694void 3634void
2695ev_check_start (EV_P_ ev_check *w) 3635ev_check_start (EV_P_ ev_check *w)
2696{ 3636{
2697 if (expect_false (ev_is_active (w))) 3637 if (expect_false (ev_is_active (w)))
2698 return; 3638 return;
… …
2724 3664
2725 ev_stop (EV_A_ (W)w); 3665 ev_stop (EV_A_ (W)w);
2726 3666
2727 EV_FREQUENT_CHECK; 3667 EV_FREQUENT_CHECK;
2728} 3668}
3669#endif
2729 3670
2730#if EV_EMBED_ENABLE 3671#if EV_EMBED_ENABLE
2731void noinline 3672void noinline
2732ev_embed_sweep (EV_P_ ev_embed *w) 3673ev_embed_sweep (EV_P_ ev_embed *w)
2733{ 3674{
2734 ev_loop (w->other, EVLOOP_NONBLOCK); 3675 ev_run (w->other, EVRUN_NOWAIT);
2735} 3676}
2736 3677
2737static void 3678static void
2738embed_io_cb (EV_P_ ev_io *io, int revents) 3679embed_io_cb (EV_P_ ev_io *io, int revents)
2739{ 3680{
2740 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3681 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2741 3682
2742 if (ev_cb (w)) 3683 if (ev_cb (w))
2743 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3684 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2744 else 3685 else
2745 ev_loop (w->other, EVLOOP_NONBLOCK); 3686 ev_run (w->other, EVRUN_NOWAIT);
2746} 3687}
2747 3688
2748static void 3689static void
2749embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3690embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2750{ 3691{
2751 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3692 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2752 3693
2753 { 3694 {
2754 struct ev_loop *loop = w->other; 3695 EV_P = w->other;
2755 3696
2756 while (fdchangecnt) 3697 while (fdchangecnt)
2757 { 3698 {
2758 fd_reify (EV_A); 3699 fd_reify (EV_A);
2759 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3700 ev_run (EV_A_ EVRUN_NOWAIT);
2760 } 3701 }
2761 } 3702 }
3703}
3704
3705static void
3706embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3707{
3708 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3709
3710 ev_embed_stop (EV_A_ w);
3711
3712 {
3713 EV_P = w->other;
3714
3715 ev_loop_fork (EV_A);
3716 ev_run (EV_A_ EVRUN_NOWAIT);
3717 }
3718
3719 ev_embed_start (EV_A_ w);
2762} 3720}
2763 3721
2764#if 0 3722#if 0
2765static void 3723static void
2766embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3724embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2774{ 3732{
2775 if (expect_false (ev_is_active (w))) 3733 if (expect_false (ev_is_active (w)))
2776 return; 3734 return;
2777 3735
2778 { 3736 {
2779 struct ev_loop *loop = w->other; 3737 EV_P = w->other;
2780 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 ()));
2781 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);
2782 } 3740 }
2783 3741
2784 EV_FREQUENT_CHECK; 3742 EV_FREQUENT_CHECK;
2785 3743
… …
2788 3746
2789 ev_prepare_init (&w->prepare, embed_prepare_cb); 3747 ev_prepare_init (&w->prepare, embed_prepare_cb);
2790 ev_set_priority (&w->prepare, EV_MINPRI); 3748 ev_set_priority (&w->prepare, EV_MINPRI);
2791 ev_prepare_start (EV_A_ &w->prepare); 3749 ev_prepare_start (EV_A_ &w->prepare);
2792 3750
3751 ev_fork_init (&w->fork, embed_fork_cb);
3752 ev_fork_start (EV_A_ &w->fork);
3753
2793 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3754 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2794 3755
2795 ev_start (EV_A_ (W)w, 1); 3756 ev_start (EV_A_ (W)w, 1);
2796 3757
2797 EV_FREQUENT_CHECK; 3758 EV_FREQUENT_CHECK;
… …
2804 if (expect_false (!ev_is_active (w))) 3765 if (expect_false (!ev_is_active (w)))
2805 return; 3766 return;
2806 3767
2807 EV_FREQUENT_CHECK; 3768 EV_FREQUENT_CHECK;
2808 3769
2809 ev_io_stop (EV_A_ &w->io); 3770 ev_io_stop (EV_A_ &w->io);
2810 ev_prepare_stop (EV_A_ &w->prepare); 3771 ev_prepare_stop (EV_A_ &w->prepare);
3772 ev_fork_stop (EV_A_ &w->fork);
2811 3773
2812 ev_stop (EV_A_ (W)w); 3774 ev_stop (EV_A_ (W)w);
2813 3775
2814 EV_FREQUENT_CHECK; 3776 EV_FREQUENT_CHECK;
2815} 3777}
… …
2851 3813
2852 EV_FREQUENT_CHECK; 3814 EV_FREQUENT_CHECK;
2853} 3815}
2854#endif 3816#endif
2855 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
2856#if EV_ASYNC_ENABLE 3859#if EV_ASYNC_ENABLE
2857void 3860void
2858ev_async_start (EV_P_ ev_async *w) 3861ev_async_start (EV_P_ ev_async *w)
2859{ 3862{
2860 if (expect_false (ev_is_active (w))) 3863 if (expect_false (ev_is_active (w)))
2861 return; 3864 return;
2862 3865
3866 w->sent = 0;
3867
2863 evpipe_init (EV_A); 3868 evpipe_init (EV_A);
2864 3869
2865 EV_FREQUENT_CHECK; 3870 EV_FREQUENT_CHECK;
2866 3871
2867 ev_start (EV_A_ (W)w, ++asynccnt); 3872 ev_start (EV_A_ (W)w, ++asynccnt);
… …
2894 3899
2895void 3900void
2896ev_async_send (EV_P_ ev_async *w) 3901ev_async_send (EV_P_ ev_async *w)
2897{ 3902{
2898 w->sent = 1; 3903 w->sent = 1;
2899 evpipe_write (EV_A_ &gotasync); 3904 evpipe_write (EV_A_ &async_pending);
2900} 3905}
2901#endif 3906#endif
2902 3907
2903/*****************************************************************************/ 3908/*****************************************************************************/
2904 3909
… …
2914once_cb (EV_P_ struct ev_once *once, int revents) 3919once_cb (EV_P_ struct ev_once *once, int revents)
2915{ 3920{
2916 void (*cb)(int revents, void *arg) = once->cb; 3921 void (*cb)(int revents, void *arg) = once->cb;
2917 void *arg = once->arg; 3922 void *arg = once->arg;
2918 3923
2919 ev_io_stop (EV_A_ &once->io); 3924 ev_io_stop (EV_A_ &once->io);
2920 ev_timer_stop (EV_A_ &once->to); 3925 ev_timer_stop (EV_A_ &once->to);
2921 ev_free (once); 3926 ev_free (once);
2922 3927
2923 cb (revents, arg); 3928 cb (revents, arg);
2924} 3929}
2925 3930
2926static void 3931static void
2927once_cb_io (EV_P_ ev_io *w, int revents) 3932once_cb_io (EV_P_ ev_io *w, int revents)
2928{ 3933{
2929 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3934 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3935
3936 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2930} 3937}
2931 3938
2932static void 3939static void
2933once_cb_to (EV_P_ ev_timer *w, int revents) 3940once_cb_to (EV_P_ ev_timer *w, int revents)
2934{ 3941{
2935 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3942 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3943
3944 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2936} 3945}
2937 3946
2938void 3947void
2939ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3948ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2940{ 3949{
2941 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));
2942 3951
2943 if (expect_false (!once)) 3952 if (expect_false (!once))
2944 { 3953 {
2945 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3954 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2946 return; 3955 return;
2947 } 3956 }
2948 3957
2949 once->cb = cb; 3958 once->cb = cb;
2950 once->arg = arg; 3959 once->arg = arg;
… …
2962 ev_timer_set (&once->to, timeout, 0.); 3971 ev_timer_set (&once->to, timeout, 0.);
2963 ev_timer_start (EV_A_ &once->to); 3972 ev_timer_start (EV_A_ &once->to);
2964 } 3973 }
2965} 3974}
2966 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
2967#if EV_MULTIPLICITY 4092#if EV_MULTIPLICITY
2968 #include "ev_wrap.h" 4093 #include "ev_wrap.h"
2969#endif 4094#endif
2970 4095
2971#ifdef __cplusplus 4096EV_CPP(})
2972}
2973#endif
2974 4097

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