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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 1.388 by root, Fri Jul 29 12:17:26 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 && 0 /* TODO: only true when using volatiles */
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)
521 #include <WinNT.h>
522 #define ECB_MEMORY_FENCE MemoryBarrier ()
523 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
524 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
525 #endif
526#endif
527
528#ifndef ECB_MEMORY_FENCE
529 #include <pthread.h>
530
531 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
532 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
533 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
534 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
535#endif
536
537#if ECB_GCC_VERSION(3,1)
538 #define ecb_attribute(attrlist) __attribute__(attrlist)
539 #define ecb_is_constant(expr) __builtin_constant_p (expr)
540 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
541 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
542#else
543 #define ecb_attribute(attrlist)
544 #define ecb_is_constant(expr) 0
545 #define ecb_expect(expr,value) (expr)
546 #define ecb_prefetch(addr,rw,locality)
547#endif
548
549#define ecb_noinline ecb_attribute ((__noinline__))
550#define ecb_noreturn ecb_attribute ((__noreturn__))
551#define ecb_unused ecb_attribute ((__unused__))
552#define ecb_const ecb_attribute ((__const__))
553#define ecb_pure ecb_attribute ((__pure__))
554
555#if ECB_GCC_VERSION(4,3)
556 #define ecb_artificial ecb_attribute ((__artificial__))
557 #define ecb_hot ecb_attribute ((__hot__))
558 #define ecb_cold ecb_attribute ((__cold__))
559#else
560 #define ecb_artificial
561 #define ecb_hot
562 #define ecb_cold
563#endif
564
565/* put around conditional expressions if you are very sure that the */
566/* expression is mostly true or mostly false. note that these return */
567/* booleans, not the expression. */
334#define expect_false(expr) expect ((expr) != 0, 0) 568#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
335#define expect_true(expr) expect ((expr) != 0, 1) 569#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
570/* ecb.h end */
571
572#define expect_false(cond) ecb_expect_false (cond)
573#define expect_true(cond) ecb_expect_true (cond)
574#define noinline ecb_noinline
575
336#define inline_size static inline 576#define inline_size ecb_inline
337 577
338#if EV_MINIMAL 578#if EV_FEATURE_CODE
579# define inline_speed ecb_inline
580#else
339# define inline_speed static noinline 581# define inline_speed static noinline
582#endif
583
584#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
585
586#if EV_MINPRI == EV_MAXPRI
587# define ABSPRI(w) (((W)w), 0)
340#else 588#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) 589# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
590#endif
346 591
347#define EMPTY /* required for microsofts broken pseudo-c compiler */ 592#define EMPTY /* required for microsofts broken pseudo-c compiler */
348#define EMPTY2(a,b) /* used to suppress some warnings */ 593#define EMPTY2(a,b) /* used to suppress some warnings */
349 594
350typedef ev_watcher *W; 595typedef ev_watcher *W;
… …
352typedef ev_watcher_time *WT; 597typedef ev_watcher_time *WT;
353 598
354#define ev_active(w) ((W)(w))->active 599#define ev_active(w) ((W)(w))->active
355#define ev_at(w) ((WT)(w))->at 600#define ev_at(w) ((WT)(w))->at
356 601
602#if EV_USE_REALTIME
603/* sig_atomic_t is used to avoid per-thread variables or locking but still */
604/* giving it a reasonably high chance of working on typical architectures */
605static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
606#endif
607
357#if EV_USE_MONOTONIC 608#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? */ 609static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
610#endif
611
612#ifndef EV_FD_TO_WIN32_HANDLE
613# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
614#endif
615#ifndef EV_WIN32_HANDLE_TO_FD
616# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
617#endif
618#ifndef EV_WIN32_CLOSE_FD
619# define EV_WIN32_CLOSE_FD(fd) close (fd)
361#endif 620#endif
362 621
363#ifdef _WIN32 622#ifdef _WIN32
364# include "ev_win32.c" 623# include "ev_win32.c"
365#endif 624#endif
366 625
367/*****************************************************************************/ 626/*****************************************************************************/
368 627
628/* define a suitable floor function (only used by periodics atm) */
629
630#if EV_USE_FLOOR
631# include <math.h>
632# define ev_floor(v) floor (v)
633#else
634
635#include <float.h>
636
637/* a floor() replacement function, should be independent of ev_tstamp type */
638static ev_tstamp noinline
639ev_floor (ev_tstamp v)
640{
641 /* the choice of shift factor is not terribly important */
642#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
643 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
644#else
645 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
646#endif
647
648 /* argument too large for an unsigned long? */
649 if (expect_false (v >= shift))
650 {
651 ev_tstamp f;
652
653 if (v == v - 1.)
654 return v; /* very large number */
655
656 f = shift * ev_floor (v * (1. / shift));
657 return f + ev_floor (v - f);
658 }
659
660 /* special treatment for negative args? */
661 if (expect_false (v < 0.))
662 {
663 ev_tstamp f = -ev_floor (-v);
664
665 return f - (f == v ? 0 : 1);
666 }
667
668 /* fits into an unsigned long */
669 return (unsigned long)v;
670}
671
672#endif
673
674/*****************************************************************************/
675
676#ifdef __linux
677# include <sys/utsname.h>
678#endif
679
680static unsigned int noinline ecb_cold
681ev_linux_version (void)
682{
683#ifdef __linux
684 unsigned int v = 0;
685 struct utsname buf;
686 int i;
687 char *p = buf.release;
688
689 if (uname (&buf))
690 return 0;
691
692 for (i = 3+1; --i; )
693 {
694 unsigned int c = 0;
695
696 for (;;)
697 {
698 if (*p >= '0' && *p <= '9')
699 c = c * 10 + *p++ - '0';
700 else
701 {
702 p += *p == '.';
703 break;
704 }
705 }
706
707 v = (v << 8) | c;
708 }
709
710 return v;
711#else
712 return 0;
713#endif
714}
715
716/*****************************************************************************/
717
718#if EV_AVOID_STDIO
719static void noinline ecb_cold
720ev_printerr (const char *msg)
721{
722 write (STDERR_FILENO, msg, strlen (msg));
723}
724#endif
725
369static void (*syserr_cb)(const char *msg); 726static void (*syserr_cb)(const char *msg);
370 727
371void 728void ecb_cold
372ev_set_syserr_cb (void (*cb)(const char *msg)) 729ev_set_syserr_cb (void (*cb)(const char *msg))
373{ 730{
374 syserr_cb = cb; 731 syserr_cb = cb;
375} 732}
376 733
377static void noinline 734static void noinline ecb_cold
378syserr (const char *msg) 735ev_syserr (const char *msg)
379{ 736{
380 if (!msg) 737 if (!msg)
381 msg = "(libev) system error"; 738 msg = "(libev) system error";
382 739
383 if (syserr_cb) 740 if (syserr_cb)
384 syserr_cb (msg); 741 syserr_cb (msg);
385 else 742 else
386 { 743 {
744#if EV_AVOID_STDIO
745 ev_printerr (msg);
746 ev_printerr (": ");
747 ev_printerr (strerror (errno));
748 ev_printerr ("\n");
749#else
387 perror (msg); 750 perror (msg);
751#endif
388 abort (); 752 abort ();
389 } 753 }
390} 754}
391 755
392static void * 756static void *
393ev_realloc_emul (void *ptr, long size) 757ev_realloc_emul (void *ptr, long size)
394{ 758{
759#if __GLIBC__
760 return realloc (ptr, size);
761#else
395 /* some systems, notably openbsd and darwin, fail to properly 762 /* some systems, notably openbsd and darwin, fail to properly
396 * implement realloc (x, 0) (as required by both ansi c-98 and 763 * implement realloc (x, 0) (as required by both ansi c-89 and
397 * the single unix specification, so work around them here. 764 * the single unix specification, so work around them here.
398 */ 765 */
399 766
400 if (size) 767 if (size)
401 return realloc (ptr, size); 768 return realloc (ptr, size);
402 769
403 free (ptr); 770 free (ptr);
404 return 0; 771 return 0;
772#endif
405} 773}
406 774
407static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 775static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
408 776
409void 777void ecb_cold
410ev_set_allocator (void *(*cb)(void *ptr, long size)) 778ev_set_allocator (void *(*cb)(void *ptr, long size))
411{ 779{
412 alloc = cb; 780 alloc = cb;
413} 781}
414 782
… …
417{ 785{
418 ptr = alloc (ptr, size); 786 ptr = alloc (ptr, size);
419 787
420 if (!ptr && size) 788 if (!ptr && size)
421 { 789 {
790#if EV_AVOID_STDIO
791 ev_printerr ("(libev) memory allocation failed, aborting.\n");
792#else
422 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 793 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
794#endif
423 abort (); 795 abort ();
424 } 796 }
425 797
426 return ptr; 798 return ptr;
427} 799}
… …
429#define ev_malloc(size) ev_realloc (0, (size)) 801#define ev_malloc(size) ev_realloc (0, (size))
430#define ev_free(ptr) ev_realloc ((ptr), 0) 802#define ev_free(ptr) ev_realloc ((ptr), 0)
431 803
432/*****************************************************************************/ 804/*****************************************************************************/
433 805
806/* set in reify when reification needed */
807#define EV_ANFD_REIFY 1
808
809/* file descriptor info structure */
434typedef struct 810typedef struct
435{ 811{
436 WL head; 812 WL head;
437 unsigned char events; 813 unsigned char events; /* the events watched for */
814 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
815 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
438 unsigned char reify; 816 unsigned char unused;
817#if EV_USE_EPOLL
818 unsigned int egen; /* generation counter to counter epoll bugs */
819#endif
439#if EV_SELECT_IS_WINSOCKET 820#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
440 SOCKET handle; 821 SOCKET handle;
441#endif 822#endif
823#if EV_USE_IOCP
824 OVERLAPPED or, ow;
825#endif
442} ANFD; 826} ANFD;
443 827
828/* stores the pending event set for a given watcher */
444typedef struct 829typedef struct
445{ 830{
446 W w; 831 W w;
447 int events; 832 int events; /* the pending event set for the given watcher */
448} ANPENDING; 833} ANPENDING;
449 834
450#if EV_USE_INOTIFY 835#if EV_USE_INOTIFY
451/* hash table entry per inotify-id */ 836/* hash table entry per inotify-id */
452typedef struct 837typedef struct
… …
455} ANFS; 840} ANFS;
456#endif 841#endif
457 842
458/* Heap Entry */ 843/* Heap Entry */
459#if EV_HEAP_CACHE_AT 844#if EV_HEAP_CACHE_AT
845 /* a heap element */
460 typedef struct { 846 typedef struct {
461 ev_tstamp at; 847 ev_tstamp at;
462 WT w; 848 WT w;
463 } ANHE; 849 } ANHE;
464 850
465 #define ANHE_w(he) (he).w /* access watcher, read-write */ 851 #define ANHE_w(he) (he).w /* access watcher, read-write */
466 #define ANHE_at(he) (he).at /* access cached at, read-only */ 852 #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 */ 853 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
468#else 854#else
855 /* a heap element */
469 typedef WT ANHE; 856 typedef WT ANHE;
470 857
471 #define ANHE_w(he) (he) 858 #define ANHE_w(he) (he)
472 #define ANHE_at(he) (he)->at 859 #define ANHE_at(he) (he)->at
473 #define ANHE_at_cache(he) 860 #define ANHE_at_cache(he)
… …
497 884
498 static int ev_default_loop_ptr; 885 static int ev_default_loop_ptr;
499 886
500#endif 887#endif
501 888
889#if EV_FEATURE_API
890# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
891# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
892# define EV_INVOKE_PENDING invoke_cb (EV_A)
893#else
894# define EV_RELEASE_CB (void)0
895# define EV_ACQUIRE_CB (void)0
896# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
897#endif
898
899#define EVBREAK_RECURSE 0x80
900
502/*****************************************************************************/ 901/*****************************************************************************/
503 902
903#ifndef EV_HAVE_EV_TIME
504ev_tstamp 904ev_tstamp
505ev_time (void) 905ev_time (void)
506{ 906{
507#if EV_USE_REALTIME 907#if EV_USE_REALTIME
908 if (expect_true (have_realtime))
909 {
508 struct timespec ts; 910 struct timespec ts;
509 clock_gettime (CLOCK_REALTIME, &ts); 911 clock_gettime (CLOCK_REALTIME, &ts);
510 return ts.tv_sec + ts.tv_nsec * 1e-9; 912 return ts.tv_sec + ts.tv_nsec * 1e-9;
511#else 913 }
914#endif
915
512 struct timeval tv; 916 struct timeval tv;
513 gettimeofday (&tv, 0); 917 gettimeofday (&tv, 0);
514 return tv.tv_sec + tv.tv_usec * 1e-6; 918 return tv.tv_sec + tv.tv_usec * 1e-6;
515#endif
516} 919}
920#endif
517 921
518ev_tstamp inline_size 922inline_size ev_tstamp
519get_clock (void) 923get_clock (void)
520{ 924{
521#if EV_USE_MONOTONIC 925#if EV_USE_MONOTONIC
522 if (expect_true (have_monotonic)) 926 if (expect_true (have_monotonic))
523 { 927 {
… …
544 if (delay > 0.) 948 if (delay > 0.)
545 { 949 {
546#if EV_USE_NANOSLEEP 950#if EV_USE_NANOSLEEP
547 struct timespec ts; 951 struct timespec ts;
548 952
549 ts.tv_sec = (time_t)delay; 953 EV_TS_SET (ts, delay);
550 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
551
552 nanosleep (&ts, 0); 954 nanosleep (&ts, 0);
553#elif defined(_WIN32) 955#elif defined(_WIN32)
554 Sleep ((unsigned long)(delay * 1e3)); 956 Sleep ((unsigned long)(delay * 1e3));
555#else 957#else
556 struct timeval tv; 958 struct timeval tv;
557 959
558 tv.tv_sec = (time_t)delay; 960 /* 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); 961 /* something not guaranteed by newer posix versions, but guaranteed */
560 962 /* by older ones */
963 EV_TV_SET (tv, delay);
561 select (0, 0, 0, 0, &tv); 964 select (0, 0, 0, 0, &tv);
562#endif 965#endif
563 } 966 }
564} 967}
565 968
566/*****************************************************************************/ 969/*****************************************************************************/
567 970
568#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 971#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
569 972
570int inline_size 973/* find a suitable new size for the given array, */
974/* hopefully by rounding to a nice-to-malloc size */
975inline_size int
571array_nextsize (int elem, int cur, int cnt) 976array_nextsize (int elem, int cur, int cnt)
572{ 977{
573 int ncur = cur + 1; 978 int ncur = cur + 1;
574 979
575 do 980 do
… …
586 } 991 }
587 992
588 return ncur; 993 return ncur;
589} 994}
590 995
591static noinline void * 996static void * noinline ecb_cold
592array_realloc (int elem, void *base, int *cur, int cnt) 997array_realloc (int elem, void *base, int *cur, int cnt)
593{ 998{
594 *cur = array_nextsize (elem, *cur, cnt); 999 *cur = array_nextsize (elem, *cur, cnt);
595 return ev_realloc (base, elem * *cur); 1000 return ev_realloc (base, elem * *cur);
596} 1001}
1002
1003#define array_init_zero(base,count) \
1004 memset ((void *)(base), 0, sizeof (*(base)) * (count))
597 1005
598#define array_needsize(type,base,cur,cnt,init) \ 1006#define array_needsize(type,base,cur,cnt,init) \
599 if (expect_false ((cnt) > (cur))) \ 1007 if (expect_false ((cnt) > (cur))) \
600 { \ 1008 { \
601 int ocur_ = (cur); \ 1009 int ecb_unused ocur_ = (cur); \
602 (base) = (type *)array_realloc \ 1010 (base) = (type *)array_realloc \
603 (sizeof (type), (base), &(cur), (cnt)); \ 1011 (sizeof (type), (base), &(cur), (cnt)); \
604 init ((base) + (ocur_), (cur) - ocur_); \ 1012 init ((base) + (ocur_), (cur) - ocur_); \
605 } 1013 }
606 1014
… …
613 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1021 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
614 } 1022 }
615#endif 1023#endif
616 1024
617#define array_free(stem, idx) \ 1025#define array_free(stem, idx) \
618 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1026 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
619 1027
620/*****************************************************************************/ 1028/*****************************************************************************/
1029
1030/* dummy callback for pending events */
1031static void noinline
1032pendingcb (EV_P_ ev_prepare *w, int revents)
1033{
1034}
621 1035
622void noinline 1036void noinline
623ev_feed_event (EV_P_ void *w, int revents) 1037ev_feed_event (EV_P_ void *w, int revents)
624{ 1038{
625 W w_ = (W)w; 1039 W w_ = (W)w;
… …
634 pendings [pri][w_->pending - 1].w = w_; 1048 pendings [pri][w_->pending - 1].w = w_;
635 pendings [pri][w_->pending - 1].events = revents; 1049 pendings [pri][w_->pending - 1].events = revents;
636 } 1050 }
637} 1051}
638 1052
639void inline_speed 1053inline_speed void
1054feed_reverse (EV_P_ W w)
1055{
1056 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1057 rfeeds [rfeedcnt++] = w;
1058}
1059
1060inline_size void
1061feed_reverse_done (EV_P_ int revents)
1062{
1063 do
1064 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1065 while (rfeedcnt);
1066}
1067
1068inline_speed void
640queue_events (EV_P_ W *events, int eventcnt, int type) 1069queue_events (EV_P_ W *events, int eventcnt, int type)
641{ 1070{
642 int i; 1071 int i;
643 1072
644 for (i = 0; i < eventcnt; ++i) 1073 for (i = 0; i < eventcnt; ++i)
645 ev_feed_event (EV_A_ events [i], type); 1074 ev_feed_event (EV_A_ events [i], type);
646} 1075}
647 1076
648/*****************************************************************************/ 1077/*****************************************************************************/
649 1078
650void inline_size 1079inline_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) 1080fd_event_nocheck (EV_P_ int fd, int revents)
665{ 1081{
666 ANFD *anfd = anfds + fd; 1082 ANFD *anfd = anfds + fd;
667 ev_io *w; 1083 ev_io *w;
668 1084
669 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1085 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
673 if (ev) 1089 if (ev)
674 ev_feed_event (EV_A_ (W)w, ev); 1090 ev_feed_event (EV_A_ (W)w, ev);
675 } 1091 }
676} 1092}
677 1093
1094/* do not submit kernel events for fds that have reify set */
1095/* because that means they changed while we were polling for new events */
1096inline_speed void
1097fd_event (EV_P_ int fd, int revents)
1098{
1099 ANFD *anfd = anfds + fd;
1100
1101 if (expect_true (!anfd->reify))
1102 fd_event_nocheck (EV_A_ fd, revents);
1103}
1104
678void 1105void
679ev_feed_fd_event (EV_P_ int fd, int revents) 1106ev_feed_fd_event (EV_P_ int fd, int revents)
680{ 1107{
681 if (fd >= 0 && fd < anfdmax) 1108 if (fd >= 0 && fd < anfdmax)
682 fd_event (EV_A_ fd, revents); 1109 fd_event_nocheck (EV_A_ fd, revents);
683} 1110}
684 1111
685void inline_size 1112/* make sure the external fd watch events are in-sync */
1113/* with the kernel/libev internal state */
1114inline_size void
686fd_reify (EV_P) 1115fd_reify (EV_P)
687{ 1116{
688 int i; 1117 int i;
1118
1119#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1120 for (i = 0; i < fdchangecnt; ++i)
1121 {
1122 int fd = fdchanges [i];
1123 ANFD *anfd = anfds + fd;
1124
1125 if (anfd->reify & EV__IOFDSET && anfd->head)
1126 {
1127 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1128
1129 if (handle != anfd->handle)
1130 {
1131 unsigned long arg;
1132
1133 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1134
1135 /* handle changed, but fd didn't - we need to do it in two steps */
1136 backend_modify (EV_A_ fd, anfd->events, 0);
1137 anfd->events = 0;
1138 anfd->handle = handle;
1139 }
1140 }
1141 }
1142#endif
689 1143
690 for (i = 0; i < fdchangecnt; ++i) 1144 for (i = 0; i < fdchangecnt; ++i)
691 { 1145 {
692 int fd = fdchanges [i]; 1146 int fd = fdchanges [i];
693 ANFD *anfd = anfds + fd; 1147 ANFD *anfd = anfds + fd;
694 ev_io *w; 1148 ev_io *w;
695 1149
696 unsigned char events = 0; 1150 unsigned char o_events = anfd->events;
1151 unsigned char o_reify = anfd->reify;
697 1152
698 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1153 anfd->reify = 0;
699 events |= (unsigned char)w->events;
700 1154
701#if EV_SELECT_IS_WINSOCKET 1155 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
702 if (events)
703 { 1156 {
704 unsigned long argp; 1157 anfd->events = 0;
705 #ifdef EV_FD_TO_WIN32_HANDLE 1158
706 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1159 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
707 #else 1160 anfd->events |= (unsigned char)w->events;
708 anfd->handle = _get_osfhandle (fd); 1161
709 #endif 1162 if (o_events != anfd->events)
710 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 1163 o_reify = EV__IOFDSET; /* actually |= */
711 } 1164 }
712#endif
713 1165
714 { 1166 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); 1167 backend_modify (EV_A_ fd, o_events, anfd->events);
723 }
724 } 1168 }
725 1169
726 fdchangecnt = 0; 1170 fdchangecnt = 0;
727} 1171}
728 1172
729void inline_size 1173/* something about the given fd changed */
1174inline_size void
730fd_change (EV_P_ int fd, int flags) 1175fd_change (EV_P_ int fd, int flags)
731{ 1176{
732 unsigned char reify = anfds [fd].reify; 1177 unsigned char reify = anfds [fd].reify;
733 anfds [fd].reify |= flags; 1178 anfds [fd].reify |= flags;
734 1179
… …
738 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1183 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
739 fdchanges [fdchangecnt - 1] = fd; 1184 fdchanges [fdchangecnt - 1] = fd;
740 } 1185 }
741} 1186}
742 1187
743void inline_speed 1188/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1189inline_speed void ecb_cold
744fd_kill (EV_P_ int fd) 1190fd_kill (EV_P_ int fd)
745{ 1191{
746 ev_io *w; 1192 ev_io *w;
747 1193
748 while ((w = (ev_io *)anfds [fd].head)) 1194 while ((w = (ev_io *)anfds [fd].head))
… …
750 ev_io_stop (EV_A_ w); 1196 ev_io_stop (EV_A_ w);
751 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1197 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
752 } 1198 }
753} 1199}
754 1200
755int inline_size 1201/* check whether the given fd is actually valid, for error recovery */
1202inline_size int ecb_cold
756fd_valid (int fd) 1203fd_valid (int fd)
757{ 1204{
758#ifdef _WIN32 1205#ifdef _WIN32
759 return _get_osfhandle (fd) != -1; 1206 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
760#else 1207#else
761 return fcntl (fd, F_GETFD) != -1; 1208 return fcntl (fd, F_GETFD) != -1;
762#endif 1209#endif
763} 1210}
764 1211
765/* called on EBADF to verify fds */ 1212/* called on EBADF to verify fds */
766static void noinline 1213static void noinline ecb_cold
767fd_ebadf (EV_P) 1214fd_ebadf (EV_P)
768{ 1215{
769 int fd; 1216 int fd;
770 1217
771 for (fd = 0; fd < anfdmax; ++fd) 1218 for (fd = 0; fd < anfdmax; ++fd)
772 if (anfds [fd].events) 1219 if (anfds [fd].events)
773 if (!fd_valid (fd) == -1 && errno == EBADF) 1220 if (!fd_valid (fd) && errno == EBADF)
774 fd_kill (EV_A_ fd); 1221 fd_kill (EV_A_ fd);
775} 1222}
776 1223
777/* called on ENOMEM in select/poll to kill some fds and retry */ 1224/* called on ENOMEM in select/poll to kill some fds and retry */
778static void noinline 1225static void noinline ecb_cold
779fd_enomem (EV_P) 1226fd_enomem (EV_P)
780{ 1227{
781 int fd; 1228 int fd;
782 1229
783 for (fd = anfdmax; fd--; ) 1230 for (fd = anfdmax; fd--; )
784 if (anfds [fd].events) 1231 if (anfds [fd].events)
785 { 1232 {
786 fd_kill (EV_A_ fd); 1233 fd_kill (EV_A_ fd);
787 return; 1234 break;
788 } 1235 }
789} 1236}
790 1237
791/* usually called after fork if backend needs to re-arm all fds from scratch */ 1238/* usually called after fork if backend needs to re-arm all fds from scratch */
792static void noinline 1239static void noinline
… …
796 1243
797 for (fd = 0; fd < anfdmax; ++fd) 1244 for (fd = 0; fd < anfdmax; ++fd)
798 if (anfds [fd].events) 1245 if (anfds [fd].events)
799 { 1246 {
800 anfds [fd].events = 0; 1247 anfds [fd].events = 0;
1248 anfds [fd].emask = 0;
801 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1249 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
802 } 1250 }
803} 1251}
804 1252
1253/* used to prepare libev internal fd's */
1254/* this is not fork-safe */
1255inline_speed void
1256fd_intern (int fd)
1257{
1258#ifdef _WIN32
1259 unsigned long arg = 1;
1260 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1261#else
1262 fcntl (fd, F_SETFD, FD_CLOEXEC);
1263 fcntl (fd, F_SETFL, O_NONBLOCK);
1264#endif
1265}
1266
805/*****************************************************************************/ 1267/*****************************************************************************/
806 1268
807/* 1269/*
808 * the heap functions want a real array index. array index 0 uis guaranteed to not 1270 * 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 1271 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
810 * the branching factor of the d-tree. 1272 * the branching factor of the d-tree.
811 */ 1273 */
812 1274
813/* 1275/*
… …
822#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1284#define HEAP0 (DHEAP - 1) /* index of first element in heap */
823#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1285#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
824#define UPHEAP_DONE(p,k) ((p) == (k)) 1286#define UPHEAP_DONE(p,k) ((p) == (k))
825 1287
826/* away from the root */ 1288/* away from the root */
827void inline_speed 1289inline_speed void
828downheap (ANHE *heap, int N, int k) 1290downheap (ANHE *heap, int N, int k)
829{ 1291{
830 ANHE he = heap [k]; 1292 ANHE he = heap [k];
831 ANHE *E = heap + N + HEAP0; 1293 ANHE *E = heap + N + HEAP0;
832 1294
… …
872#define HEAP0 1 1334#define HEAP0 1
873#define HPARENT(k) ((k) >> 1) 1335#define HPARENT(k) ((k) >> 1)
874#define UPHEAP_DONE(p,k) (!(p)) 1336#define UPHEAP_DONE(p,k) (!(p))
875 1337
876/* away from the root */ 1338/* away from the root */
877void inline_speed 1339inline_speed void
878downheap (ANHE *heap, int N, int k) 1340downheap (ANHE *heap, int N, int k)
879{ 1341{
880 ANHE he = heap [k]; 1342 ANHE he = heap [k];
881 1343
882 for (;;) 1344 for (;;)
883 { 1345 {
884 int c = k << 1; 1346 int c = k << 1;
885 1347
886 if (c > N + HEAP0 - 1) 1348 if (c >= N + HEAP0)
887 break; 1349 break;
888 1350
889 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1351 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
890 ? 1 : 0; 1352 ? 1 : 0;
891 1353
… …
902 ev_active (ANHE_w (he)) = k; 1364 ev_active (ANHE_w (he)) = k;
903} 1365}
904#endif 1366#endif
905 1367
906/* towards the root */ 1368/* towards the root */
907void inline_speed 1369inline_speed void
908upheap (ANHE *heap, int k) 1370upheap (ANHE *heap, int k)
909{ 1371{
910 ANHE he = heap [k]; 1372 ANHE he = heap [k];
911 1373
912 for (;;) 1374 for (;;)
… …
923 1385
924 heap [k] = he; 1386 heap [k] = he;
925 ev_active (ANHE_w (he)) = k; 1387 ev_active (ANHE_w (he)) = k;
926} 1388}
927 1389
928void inline_size 1390/* move an element suitably so it is in a correct place */
1391inline_size void
929adjustheap (ANHE *heap, int N, int k) 1392adjustheap (ANHE *heap, int N, int k)
930{ 1393{
931 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1394 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
932 upheap (heap, k); 1395 upheap (heap, k);
933 else 1396 else
934 downheap (heap, N, k); 1397 downheap (heap, N, k);
935} 1398}
936 1399
937/* rebuild the heap: this function is used only once and executed rarely */ 1400/* rebuild the heap: this function is used only once and executed rarely */
938void inline_size 1401inline_size void
939reheap (ANHE *heap, int N) 1402reheap (ANHE *heap, int N)
940{ 1403{
941 int i; 1404 int i;
1405
942 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1406 /* 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 */ 1407 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
944 for (i = 0; i < N; ++i) 1408 for (i = 0; i < N; ++i)
945 upheap (heap, i + HEAP0); 1409 upheap (heap, i + HEAP0);
946} 1410}
947 1411
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/*****************************************************************************/ 1412/*****************************************************************************/
964 1413
1414/* associate signal watchers to a signal signal */
965typedef struct 1415typedef struct
966{ 1416{
1417 EV_ATOMIC_T pending;
1418#if EV_MULTIPLICITY
1419 EV_P;
1420#endif
967 WL head; 1421 WL head;
968 EV_ATOMIC_T gotsig;
969} ANSIG; 1422} ANSIG;
970 1423
971static ANSIG *signals; 1424static 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 1425
988/*****************************************************************************/ 1426/*****************************************************************************/
989 1427
990void inline_speed 1428#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 1429
1002static void noinline 1430static void noinline ecb_cold
1003evpipe_init (EV_P) 1431evpipe_init (EV_P)
1004{ 1432{
1005 if (!ev_is_active (&pipeev)) 1433 if (!ev_is_active (&pipe_w))
1006 { 1434 {
1007#if EV_USE_EVENTFD 1435# if EV_USE_EVENTFD
1436 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1437 if (evfd < 0 && errno == EINVAL)
1008 if ((evfd = eventfd (0, 0)) >= 0) 1438 evfd = eventfd (0, 0);
1439
1440 if (evfd >= 0)
1009 { 1441 {
1010 evpipe [0] = -1; 1442 evpipe [0] = -1;
1011 fd_intern (evfd); 1443 fd_intern (evfd); /* doing it twice doesn't hurt */
1012 ev_io_set (&pipeev, evfd, EV_READ); 1444 ev_io_set (&pipe_w, evfd, EV_READ);
1013 } 1445 }
1014 else 1446 else
1015#endif 1447# endif
1016 { 1448 {
1017 while (pipe (evpipe)) 1449 while (pipe (evpipe))
1018 syserr ("(libev) error creating signal/async pipe"); 1450 ev_syserr ("(libev) error creating signal/async pipe");
1019 1451
1020 fd_intern (evpipe [0]); 1452 fd_intern (evpipe [0]);
1021 fd_intern (evpipe [1]); 1453 fd_intern (evpipe [1]);
1022 ev_io_set (&pipeev, evpipe [0], EV_READ); 1454 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1023 } 1455 }
1024 1456
1025 ev_io_start (EV_A_ &pipeev); 1457 ev_io_start (EV_A_ &pipe_w);
1026 ev_unref (EV_A); /* watcher should not keep loop alive */ 1458 ev_unref (EV_A); /* watcher should not keep loop alive */
1027 } 1459 }
1028} 1460}
1029 1461
1030void inline_size 1462inline_speed void
1031evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1463evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1032{ 1464{
1033 if (!*flag) 1465 if (expect_true (*flag))
1466 return;
1467
1468 *flag = 1;
1469
1470 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1471
1472 pipe_write_skipped = 1;
1473
1474 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1475
1476 if (pipe_write_wanted)
1034 { 1477 {
1478 int old_errno;
1479
1480 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1481
1035 int old_errno = errno; /* save errno because write might clobber it */ 1482 old_errno = errno; /* save errno because write will clobber it */
1036
1037 *flag = 1;
1038 1483
1039#if EV_USE_EVENTFD 1484#if EV_USE_EVENTFD
1040 if (evfd >= 0) 1485 if (evfd >= 0)
1041 { 1486 {
1042 uint64_t counter = 1; 1487 uint64_t counter = 1;
1043 write (evfd, &counter, sizeof (uint64_t)); 1488 write (evfd, &counter, sizeof (uint64_t));
1044 } 1489 }
1045 else 1490 else
1046#endif 1491#endif
1492 {
1493 /* win32 people keep sending patches that change this write() to send() */
1494 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1495 /* so when you think this write should be a send instead, please find out */
1496 /* where your send() is from - it's definitely not the microsoft send, and */
1497 /* tell me. thank you. */
1047 write (evpipe [1], &old_errno, 1); 1498 write (evpipe [1], &(evpipe [1]), 1);
1499 }
1048 1500
1049 errno = old_errno; 1501 errno = old_errno;
1050 } 1502 }
1051} 1503}
1052 1504
1505/* called whenever the libev signal pipe */
1506/* got some events (signal, async) */
1053static void 1507static void
1054pipecb (EV_P_ ev_io *iow, int revents) 1508pipecb (EV_P_ ev_io *iow, int revents)
1055{ 1509{
1510 int i;
1511
1512 if (revents & EV_READ)
1513 {
1056#if EV_USE_EVENTFD 1514#if EV_USE_EVENTFD
1057 if (evfd >= 0) 1515 if (evfd >= 0)
1058 { 1516 {
1059 uint64_t counter; 1517 uint64_t counter;
1060 read (evfd, &counter, sizeof (uint64_t)); 1518 read (evfd, &counter, sizeof (uint64_t));
1061 } 1519 }
1062 else 1520 else
1063#endif 1521#endif
1064 { 1522 {
1065 char dummy; 1523 char dummy;
1524 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1066 read (evpipe [0], &dummy, 1); 1525 read (evpipe [0], &dummy, 1);
1526 }
1527 }
1528
1529 pipe_write_skipped = 0;
1530
1531#if EV_SIGNAL_ENABLE
1532 if (sig_pending)
1067 } 1533 {
1534 sig_pending = 0;
1068 1535
1069 if (gotsig && ev_is_default_loop (EV_A)) 1536 for (i = EV_NSIG - 1; i--; )
1070 { 1537 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); 1538 ev_feed_signal_event (EV_A_ i + 1);
1077 } 1539 }
1540#endif
1078 1541
1079#if EV_ASYNC_ENABLE 1542#if EV_ASYNC_ENABLE
1080 if (gotasync) 1543 if (async_pending)
1081 { 1544 {
1082 int i; 1545 async_pending = 0;
1083 gotasync = 0;
1084 1546
1085 for (i = asynccnt; i--; ) 1547 for (i = asynccnt; i--; )
1086 if (asyncs [i]->sent) 1548 if (asyncs [i]->sent)
1087 { 1549 {
1088 asyncs [i]->sent = 0; 1550 asyncs [i]->sent = 0;
… …
1092#endif 1554#endif
1093} 1555}
1094 1556
1095/*****************************************************************************/ 1557/*****************************************************************************/
1096 1558
1559void
1560ev_feed_signal (int signum)
1561{
1562#if EV_MULTIPLICITY
1563 EV_P = signals [signum - 1].loop;
1564
1565 if (!EV_A)
1566 return;
1567#endif
1568
1569 if (!ev_active (&pipe_w))
1570 return;
1571
1572 signals [signum - 1].pending = 1;
1573 evpipe_write (EV_A_ &sig_pending);
1574}
1575
1097static void 1576static void
1098ev_sighandler (int signum) 1577ev_sighandler (int signum)
1099{ 1578{
1100#if EV_MULTIPLICITY
1101 struct ev_loop *loop = &default_loop_struct;
1102#endif
1103
1104#if _WIN32 1579#ifdef _WIN32
1105 signal (signum, ev_sighandler); 1580 signal (signum, ev_sighandler);
1106#endif 1581#endif
1107 1582
1108 signals [signum - 1].gotsig = 1; 1583 ev_feed_signal (signum);
1109 evpipe_write (EV_A_ &gotsig);
1110} 1584}
1111 1585
1112void noinline 1586void noinline
1113ev_feed_signal_event (EV_P_ int signum) 1587ev_feed_signal_event (EV_P_ int signum)
1114{ 1588{
1115 WL w; 1589 WL w;
1116 1590
1591 if (expect_false (signum <= 0 || signum > EV_NSIG))
1592 return;
1593
1594 --signum;
1595
1117#if EV_MULTIPLICITY 1596#if EV_MULTIPLICITY
1118 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1597 /* it is permissible to try to feed a signal to the wrong loop */
1119#endif 1598 /* or, likely more useful, feeding a signal nobody is waiting for */
1120 1599
1121 --signum; 1600 if (expect_false (signals [signum].loop != EV_A))
1122
1123 if (signum < 0 || signum >= signalmax)
1124 return; 1601 return;
1602#endif
1125 1603
1126 signals [signum].gotsig = 0; 1604 signals [signum].pending = 0;
1127 1605
1128 for (w = signals [signum].head; w; w = w->next) 1606 for (w = signals [signum].head; w; w = w->next)
1129 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1607 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1130} 1608}
1131 1609
1610#if EV_USE_SIGNALFD
1611static void
1612sigfdcb (EV_P_ ev_io *iow, int revents)
1613{
1614 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1615
1616 for (;;)
1617 {
1618 ssize_t res = read (sigfd, si, sizeof (si));
1619
1620 /* not ISO-C, as res might be -1, but works with SuS */
1621 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1622 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1623
1624 if (res < (ssize_t)sizeof (si))
1625 break;
1626 }
1627}
1628#endif
1629
1630#endif
1631
1132/*****************************************************************************/ 1632/*****************************************************************************/
1133 1633
1634#if EV_CHILD_ENABLE
1134static WL childs [EV_PID_HASHSIZE]; 1635static WL childs [EV_PID_HASHSIZE];
1135
1136#ifndef _WIN32
1137 1636
1138static ev_signal childev; 1637static ev_signal childev;
1139 1638
1140#ifndef WIFCONTINUED 1639#ifndef WIFCONTINUED
1141# define WIFCONTINUED(status) 0 1640# define WIFCONTINUED(status) 0
1142#endif 1641#endif
1143 1642
1144void inline_speed 1643/* handle a single child status event */
1644inline_speed void
1145child_reap (EV_P_ int chain, int pid, int status) 1645child_reap (EV_P_ int chain, int pid, int status)
1146{ 1646{
1147 ev_child *w; 1647 ev_child *w;
1148 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1648 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1149 1649
1150 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1650 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1151 { 1651 {
1152 if ((w->pid == pid || !w->pid) 1652 if ((w->pid == pid || !w->pid)
1153 && (!traced || (w->flags & 1))) 1653 && (!traced || (w->flags & 1)))
1154 { 1654 {
1155 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1655 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1162 1662
1163#ifndef WCONTINUED 1663#ifndef WCONTINUED
1164# define WCONTINUED 0 1664# define WCONTINUED 0
1165#endif 1665#endif
1166 1666
1667/* called on sigchld etc., calls waitpid */
1167static void 1668static void
1168childcb (EV_P_ ev_signal *sw, int revents) 1669childcb (EV_P_ ev_signal *sw, int revents)
1169{ 1670{
1170 int pid, status; 1671 int pid, status;
1171 1672
… …
1179 /* make sure we are called again until all children have been reaped */ 1680 /* 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 */ 1681 /* 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); 1682 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1182 1683
1183 child_reap (EV_A_ pid, pid, status); 1684 child_reap (EV_A_ pid, pid, status);
1184 if (EV_PID_HASHSIZE > 1) 1685 if ((EV_PID_HASHSIZE) > 1)
1185 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1686 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1186} 1687}
1187 1688
1188#endif 1689#endif
1189 1690
1190/*****************************************************************************/ 1691/*****************************************************************************/
1191 1692
1693#if EV_USE_IOCP
1694# include "ev_iocp.c"
1695#endif
1192#if EV_USE_PORT 1696#if EV_USE_PORT
1193# include "ev_port.c" 1697# include "ev_port.c"
1194#endif 1698#endif
1195#if EV_USE_KQUEUE 1699#if EV_USE_KQUEUE
1196# include "ev_kqueue.c" 1700# include "ev_kqueue.c"
… …
1203#endif 1707#endif
1204#if EV_USE_SELECT 1708#if EV_USE_SELECT
1205# include "ev_select.c" 1709# include "ev_select.c"
1206#endif 1710#endif
1207 1711
1208int 1712int ecb_cold
1209ev_version_major (void) 1713ev_version_major (void)
1210{ 1714{
1211 return EV_VERSION_MAJOR; 1715 return EV_VERSION_MAJOR;
1212} 1716}
1213 1717
1214int 1718int ecb_cold
1215ev_version_minor (void) 1719ev_version_minor (void)
1216{ 1720{
1217 return EV_VERSION_MINOR; 1721 return EV_VERSION_MINOR;
1218} 1722}
1219 1723
1220/* return true if we are running with elevated privileges and should ignore env variables */ 1724/* return true if we are running with elevated privileges and should ignore env variables */
1221int inline_size 1725int inline_size ecb_cold
1222enable_secure (void) 1726enable_secure (void)
1223{ 1727{
1224#ifdef _WIN32 1728#ifdef _WIN32
1225 return 0; 1729 return 0;
1226#else 1730#else
1227 return getuid () != geteuid () 1731 return getuid () != geteuid ()
1228 || getgid () != getegid (); 1732 || getgid () != getegid ();
1229#endif 1733#endif
1230} 1734}
1231 1735
1232unsigned int 1736unsigned int ecb_cold
1233ev_supported_backends (void) 1737ev_supported_backends (void)
1234{ 1738{
1235 unsigned int flags = 0; 1739 unsigned int flags = 0;
1236 1740
1237 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1741 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1241 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1745 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1242 1746
1243 return flags; 1747 return flags;
1244} 1748}
1245 1749
1246unsigned int 1750unsigned int ecb_cold
1247ev_recommended_backends (void) 1751ev_recommended_backends (void)
1248{ 1752{
1249 unsigned int flags = ev_supported_backends (); 1753 unsigned int flags = ev_supported_backends ();
1250 1754
1251#ifndef __NetBSD__ 1755#ifndef __NetBSD__
1252 /* kqueue is borked on everything but netbsd apparently */ 1756 /* kqueue is borked on everything but netbsd apparently */
1253 /* it usually doesn't work correctly on anything but sockets and pipes */ 1757 /* it usually doesn't work correctly on anything but sockets and pipes */
1254 flags &= ~EVBACKEND_KQUEUE; 1758 flags &= ~EVBACKEND_KQUEUE;
1255#endif 1759#endif
1256#ifdef __APPLE__ 1760#ifdef __APPLE__
1257 // flags &= ~EVBACKEND_KQUEUE; for documentation 1761 /* only select works correctly on that "unix-certified" platform */
1258 flags &= ~EVBACKEND_POLL; 1762 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1763 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1764#endif
1765#ifdef __FreeBSD__
1766 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1259#endif 1767#endif
1260 1768
1261 return flags; 1769 return flags;
1262} 1770}
1263 1771
1264unsigned int 1772unsigned int ecb_cold
1265ev_embeddable_backends (void) 1773ev_embeddable_backends (void)
1266{ 1774{
1267 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1775 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1268 1776
1269 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1777 /* 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 */ 1778 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1271 flags &= ~EVBACKEND_EPOLL; 1779 flags &= ~EVBACKEND_EPOLL;
1272 1780
1273 return flags; 1781 return flags;
1274} 1782}
1275 1783
1276unsigned int 1784unsigned int
1277ev_backend (EV_P) 1785ev_backend (EV_P)
1278{ 1786{
1279 return backend; 1787 return backend;
1280} 1788}
1281 1789
1790#if EV_FEATURE_API
1282unsigned int 1791unsigned int
1283ev_loop_count (EV_P) 1792ev_iteration (EV_P)
1284{ 1793{
1285 return loop_count; 1794 return loop_count;
1795}
1796
1797unsigned int
1798ev_depth (EV_P)
1799{
1800 return loop_depth;
1286} 1801}
1287 1802
1288void 1803void
1289ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1804ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1290{ 1805{
… …
1295ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1810ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1296{ 1811{
1297 timeout_blocktime = interval; 1812 timeout_blocktime = interval;
1298} 1813}
1299 1814
1815void
1816ev_set_userdata (EV_P_ void *data)
1817{
1818 userdata = data;
1819}
1820
1821void *
1822ev_userdata (EV_P)
1823{
1824 return userdata;
1825}
1826
1827void
1828ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1829{
1830 invoke_cb = invoke_pending_cb;
1831}
1832
1833void
1834ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1835{
1836 release_cb = release;
1837 acquire_cb = acquire;
1838}
1839#endif
1840
1841/* initialise a loop structure, must be zero-initialised */
1300static void noinline 1842static void noinline ecb_cold
1301loop_init (EV_P_ unsigned int flags) 1843loop_init (EV_P_ unsigned int flags)
1302{ 1844{
1303 if (!backend) 1845 if (!backend)
1304 { 1846 {
1847 origflags = flags;
1848
1849#if EV_USE_REALTIME
1850 if (!have_realtime)
1851 {
1852 struct timespec ts;
1853
1854 if (!clock_gettime (CLOCK_REALTIME, &ts))
1855 have_realtime = 1;
1856 }
1857#endif
1858
1305#if EV_USE_MONOTONIC 1859#if EV_USE_MONOTONIC
1860 if (!have_monotonic)
1306 { 1861 {
1307 struct timespec ts; 1862 struct timespec ts;
1863
1308 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1864 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1309 have_monotonic = 1; 1865 have_monotonic = 1;
1310 } 1866 }
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 1867#endif
1326 1868
1327 /* pid check not overridable via env */ 1869 /* pid check not overridable via env */
1328#ifndef _WIN32 1870#ifndef _WIN32
1329 if (flags & EVFLAG_FORKCHECK) 1871 if (flags & EVFLAG_FORKCHECK)
… …
1333 if (!(flags & EVFLAG_NOENV) 1875 if (!(flags & EVFLAG_NOENV)
1334 && !enable_secure () 1876 && !enable_secure ()
1335 && getenv ("LIBEV_FLAGS")) 1877 && getenv ("LIBEV_FLAGS"))
1336 flags = atoi (getenv ("LIBEV_FLAGS")); 1878 flags = atoi (getenv ("LIBEV_FLAGS"));
1337 1879
1338 if (!(flags & 0x0000ffffU)) 1880 ev_rt_now = ev_time ();
1881 mn_now = get_clock ();
1882 now_floor = mn_now;
1883 rtmn_diff = ev_rt_now - mn_now;
1884#if EV_FEATURE_API
1885 invoke_cb = ev_invoke_pending;
1886#endif
1887
1888 io_blocktime = 0.;
1889 timeout_blocktime = 0.;
1890 backend = 0;
1891 backend_fd = -1;
1892 sig_pending = 0;
1893#if EV_ASYNC_ENABLE
1894 async_pending = 0;
1895#endif
1896 pipe_write_skipped = 0;
1897 pipe_write_wanted = 0;
1898#if EV_USE_INOTIFY
1899 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1900#endif
1901#if EV_USE_SIGNALFD
1902 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1903#endif
1904
1905 if (!(flags & EVBACKEND_MASK))
1339 flags |= ev_recommended_backends (); 1906 flags |= ev_recommended_backends ();
1340 1907
1908#if EV_USE_IOCP
1909 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1910#endif
1341#if EV_USE_PORT 1911#if EV_USE_PORT
1342 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1912 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1343#endif 1913#endif
1344#if EV_USE_KQUEUE 1914#if EV_USE_KQUEUE
1345 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1915 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1352#endif 1922#endif
1353#if EV_USE_SELECT 1923#if EV_USE_SELECT
1354 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1924 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1355#endif 1925#endif
1356 1926
1927 ev_prepare_init (&pending_w, pendingcb);
1928
1929#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1357 ev_init (&pipeev, pipecb); 1930 ev_init (&pipe_w, pipecb);
1358 ev_set_priority (&pipeev, EV_MAXPRI); 1931 ev_set_priority (&pipe_w, EV_MAXPRI);
1932#endif
1359 } 1933 }
1360} 1934}
1361 1935
1362static void noinline 1936/* free up a loop structure */
1937void ecb_cold
1363loop_destroy (EV_P) 1938ev_loop_destroy (EV_P)
1364{ 1939{
1365 int i; 1940 int i;
1366 1941
1942#if EV_MULTIPLICITY
1943 /* mimic free (0) */
1944 if (!EV_A)
1945 return;
1946#endif
1947
1948#if EV_CLEANUP_ENABLE
1949 /* queue cleanup watchers (and execute them) */
1950 if (expect_false (cleanupcnt))
1951 {
1952 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1953 EV_INVOKE_PENDING;
1954 }
1955#endif
1956
1957#if EV_CHILD_ENABLE
1958 if (ev_is_active (&childev))
1959 {
1960 ev_ref (EV_A); /* child watcher */
1961 ev_signal_stop (EV_A_ &childev);
1962 }
1963#endif
1964
1367 if (ev_is_active (&pipeev)) 1965 if (ev_is_active (&pipe_w))
1368 { 1966 {
1369 ev_ref (EV_A); /* signal watcher */ 1967 /*ev_ref (EV_A);*/
1370 ev_io_stop (EV_A_ &pipeev); 1968 /*ev_io_stop (EV_A_ &pipe_w);*/
1371 1969
1372#if EV_USE_EVENTFD 1970#if EV_USE_EVENTFD
1373 if (evfd >= 0) 1971 if (evfd >= 0)
1374 close (evfd); 1972 close (evfd);
1375#endif 1973#endif
1376 1974
1377 if (evpipe [0] >= 0) 1975 if (evpipe [0] >= 0)
1378 { 1976 {
1379 close (evpipe [0]); 1977 EV_WIN32_CLOSE_FD (evpipe [0]);
1380 close (evpipe [1]); 1978 EV_WIN32_CLOSE_FD (evpipe [1]);
1381 } 1979 }
1382 } 1980 }
1981
1982#if EV_USE_SIGNALFD
1983 if (ev_is_active (&sigfd_w))
1984 close (sigfd);
1985#endif
1383 1986
1384#if EV_USE_INOTIFY 1987#if EV_USE_INOTIFY
1385 if (fs_fd >= 0) 1988 if (fs_fd >= 0)
1386 close (fs_fd); 1989 close (fs_fd);
1387#endif 1990#endif
1388 1991
1389 if (backend_fd >= 0) 1992 if (backend_fd >= 0)
1390 close (backend_fd); 1993 close (backend_fd);
1391 1994
1995#if EV_USE_IOCP
1996 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1997#endif
1392#if EV_USE_PORT 1998#if EV_USE_PORT
1393 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1999 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1394#endif 2000#endif
1395#if EV_USE_KQUEUE 2001#if EV_USE_KQUEUE
1396 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2002 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1411#if EV_IDLE_ENABLE 2017#if EV_IDLE_ENABLE
1412 array_free (idle, [i]); 2018 array_free (idle, [i]);
1413#endif 2019#endif
1414 } 2020 }
1415 2021
1416 ev_free (anfds); anfdmax = 0; 2022 ev_free (anfds); anfds = 0; anfdmax = 0;
1417 2023
1418 /* have to use the microsoft-never-gets-it-right macro */ 2024 /* have to use the microsoft-never-gets-it-right macro */
2025 array_free (rfeed, EMPTY);
1419 array_free (fdchange, EMPTY); 2026 array_free (fdchange, EMPTY);
1420 array_free (timer, EMPTY); 2027 array_free (timer, EMPTY);
1421#if EV_PERIODIC_ENABLE 2028#if EV_PERIODIC_ENABLE
1422 array_free (periodic, EMPTY); 2029 array_free (periodic, EMPTY);
1423#endif 2030#endif
1424#if EV_FORK_ENABLE 2031#if EV_FORK_ENABLE
1425 array_free (fork, EMPTY); 2032 array_free (fork, EMPTY);
1426#endif 2033#endif
2034#if EV_CLEANUP_ENABLE
2035 array_free (cleanup, EMPTY);
2036#endif
1427 array_free (prepare, EMPTY); 2037 array_free (prepare, EMPTY);
1428 array_free (check, EMPTY); 2038 array_free (check, EMPTY);
1429#if EV_ASYNC_ENABLE 2039#if EV_ASYNC_ENABLE
1430 array_free (async, EMPTY); 2040 array_free (async, EMPTY);
1431#endif 2041#endif
1432 2042
1433 backend = 0; 2043 backend = 0;
2044
2045#if EV_MULTIPLICITY
2046 if (ev_is_default_loop (EV_A))
2047#endif
2048 ev_default_loop_ptr = 0;
2049#if EV_MULTIPLICITY
2050 else
2051 ev_free (EV_A);
2052#endif
1434} 2053}
1435 2054
1436#if EV_USE_INOTIFY 2055#if EV_USE_INOTIFY
1437void inline_size infy_fork (EV_P); 2056inline_size void infy_fork (EV_P);
1438#endif 2057#endif
1439 2058
1440void inline_size 2059inline_size void
1441loop_fork (EV_P) 2060loop_fork (EV_P)
1442{ 2061{
1443#if EV_USE_PORT 2062#if EV_USE_PORT
1444 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2063 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1445#endif 2064#endif
… …
1451#endif 2070#endif
1452#if EV_USE_INOTIFY 2071#if EV_USE_INOTIFY
1453 infy_fork (EV_A); 2072 infy_fork (EV_A);
1454#endif 2073#endif
1455 2074
1456 if (ev_is_active (&pipeev)) 2075 if (ev_is_active (&pipe_w))
1457 { 2076 {
1458 /* this "locks" the handlers against writing to the pipe */ 2077 /* 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 2078
1465 ev_ref (EV_A); 2079 ev_ref (EV_A);
1466 ev_io_stop (EV_A_ &pipeev); 2080 ev_io_stop (EV_A_ &pipe_w);
1467 2081
1468#if EV_USE_EVENTFD 2082#if EV_USE_EVENTFD
1469 if (evfd >= 0) 2083 if (evfd >= 0)
1470 close (evfd); 2084 close (evfd);
1471#endif 2085#endif
1472 2086
1473 if (evpipe [0] >= 0) 2087 if (evpipe [0] >= 0)
1474 { 2088 {
1475 close (evpipe [0]); 2089 EV_WIN32_CLOSE_FD (evpipe [0]);
1476 close (evpipe [1]); 2090 EV_WIN32_CLOSE_FD (evpipe [1]);
1477 } 2091 }
1478 2092
2093#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1479 evpipe_init (EV_A); 2094 evpipe_init (EV_A);
1480 /* now iterate over everything, in case we missed something */ 2095 /* now iterate over everything, in case we missed something */
1481 pipecb (EV_A_ &pipeev, EV_READ); 2096 pipecb (EV_A_ &pipe_w, EV_READ);
2097#endif
1482 } 2098 }
1483 2099
1484 postfork = 0; 2100 postfork = 0;
1485} 2101}
1486 2102
1487#if EV_MULTIPLICITY 2103#if EV_MULTIPLICITY
1488 2104
1489struct ev_loop * 2105struct ev_loop * ecb_cold
1490ev_loop_new (unsigned int flags) 2106ev_loop_new (unsigned int flags)
1491{ 2107{
1492 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2108 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1493 2109
1494 memset (loop, 0, sizeof (struct ev_loop)); 2110 memset (EV_A, 0, sizeof (struct ev_loop));
1495
1496 loop_init (EV_A_ flags); 2111 loop_init (EV_A_ flags);
1497 2112
1498 if (ev_backend (EV_A)) 2113 if (ev_backend (EV_A))
1499 return loop; 2114 return EV_A;
1500 2115
2116 ev_free (EV_A);
1501 return 0; 2117 return 0;
1502} 2118}
1503 2119
1504void 2120#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 2121
1517#if EV_VERIFY 2122#if EV_VERIFY
1518static void 2123static void noinline ecb_cold
2124verify_watcher (EV_P_ W w)
2125{
2126 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2127
2128 if (w->pending)
2129 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2130}
2131
2132static void noinline ecb_cold
2133verify_heap (EV_P_ ANHE *heap, int N)
2134{
2135 int i;
2136
2137 for (i = HEAP0; i < N + HEAP0; ++i)
2138 {
2139 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
2140 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
2141 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
2142
2143 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2144 }
2145}
2146
2147static void noinline ecb_cold
1519array_check (W **ws, int cnt) 2148array_verify (EV_P_ W *ws, int cnt)
1520{ 2149{
1521 while (cnt--) 2150 while (cnt--)
2151 {
1522 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2152 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
2153 verify_watcher (EV_A_ ws [cnt]);
2154 }
1523} 2155}
1524#endif 2156#endif
1525 2157
1526void 2158#if EV_FEATURE_API
2159void ecb_cold
1527ev_loop_verify (EV_P) 2160ev_verify (EV_P)
1528{ 2161{
1529#if EV_VERIFY 2162#if EV_VERIFY
1530 int i; 2163 int i;
2164 WL w;
1531 2165
2166 assert (activecnt >= -1);
2167
2168 assert (fdchangemax >= fdchangecnt);
2169 for (i = 0; i < fdchangecnt; ++i)
2170 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2171
2172 assert (anfdmax >= 0);
2173 for (i = 0; i < anfdmax; ++i)
2174 for (w = anfds [i].head; w; w = w->next)
2175 {
2176 verify_watcher (EV_A_ (W)w);
2177 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2178 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2179 }
2180
2181 assert (timermax >= timercnt);
1532 checkheap (timers, timercnt); 2182 verify_heap (EV_A_ timers, timercnt);
2183
1533#if EV_PERIODIC_ENABLE 2184#if EV_PERIODIC_ENABLE
2185 assert (periodicmax >= periodiccnt);
1534 checkheap (periodics, periodiccnt); 2186 verify_heap (EV_A_ periodics, periodiccnt);
1535#endif 2187#endif
1536 2188
2189 for (i = NUMPRI; i--; )
2190 {
2191 assert (pendingmax [i] >= pendingcnt [i]);
1537#if EV_IDLE_ENABLE 2192#if EV_IDLE_ENABLE
1538 for (i = NUMPRI; i--; ) 2193 assert (idleall >= 0);
2194 assert (idlemax [i] >= idlecnt [i]);
1539 array_check ((W **)idles [i], idlecnt [i]); 2195 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1540#endif 2196#endif
2197 }
2198
1541#if EV_FORK_ENABLE 2199#if EV_FORK_ENABLE
2200 assert (forkmax >= forkcnt);
1542 array_check ((W **)forks, forkcnt); 2201 array_verify (EV_A_ (W *)forks, forkcnt);
1543#endif 2202#endif
2203
2204#if EV_CLEANUP_ENABLE
2205 assert (cleanupmax >= cleanupcnt);
2206 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2207#endif
2208
1544#if EV_ASYNC_ENABLE 2209#if EV_ASYNC_ENABLE
2210 assert (asyncmax >= asynccnt);
1545 array_check ((W **)asyncs, asynccnt); 2211 array_verify (EV_A_ (W *)asyncs, asynccnt);
2212#endif
2213
2214#if EV_PREPARE_ENABLE
2215 assert (preparemax >= preparecnt);
2216 array_verify (EV_A_ (W *)prepares, preparecnt);
2217#endif
2218
2219#if EV_CHECK_ENABLE
2220 assert (checkmax >= checkcnt);
2221 array_verify (EV_A_ (W *)checks, checkcnt);
2222#endif
2223
2224# if 0
2225#if EV_CHILD_ENABLE
2226 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2227 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2228#endif
1546#endif 2229# endif
1547 array_check ((W **)prepares, preparecnt);
1548 array_check ((W **)checks, checkcnt);
1549#endif 2230#endif
1550} 2231}
1551 2232#endif
1552#endif /* multiplicity */
1553 2233
1554#if EV_MULTIPLICITY 2234#if EV_MULTIPLICITY
1555struct ev_loop * 2235struct ev_loop * ecb_cold
1556ev_default_loop_init (unsigned int flags)
1557#else 2236#else
1558int 2237int
2238#endif
1559ev_default_loop (unsigned int flags) 2239ev_default_loop (unsigned int flags)
1560#endif
1561{ 2240{
1562 if (!ev_default_loop_ptr) 2241 if (!ev_default_loop_ptr)
1563 { 2242 {
1564#if EV_MULTIPLICITY 2243#if EV_MULTIPLICITY
1565 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2244 EV_P = ev_default_loop_ptr = &default_loop_struct;
1566#else 2245#else
1567 ev_default_loop_ptr = 1; 2246 ev_default_loop_ptr = 1;
1568#endif 2247#endif
1569 2248
1570 loop_init (EV_A_ flags); 2249 loop_init (EV_A_ flags);
1571 2250
1572 if (ev_backend (EV_A)) 2251 if (ev_backend (EV_A))
1573 { 2252 {
1574#ifndef _WIN32 2253#if EV_CHILD_ENABLE
1575 ev_signal_init (&childev, childcb, SIGCHLD); 2254 ev_signal_init (&childev, childcb, SIGCHLD);
1576 ev_set_priority (&childev, EV_MAXPRI); 2255 ev_set_priority (&childev, EV_MAXPRI);
1577 ev_signal_start (EV_A_ &childev); 2256 ev_signal_start (EV_A_ &childev);
1578 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2257 ev_unref (EV_A); /* child watcher should not keep loop alive */
1579#endif 2258#endif
… …
1584 2263
1585 return ev_default_loop_ptr; 2264 return ev_default_loop_ptr;
1586} 2265}
1587 2266
1588void 2267void
1589ev_default_destroy (void) 2268ev_loop_fork (EV_P)
1590{ 2269{
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 */ 2270 postfork = 1; /* must be in line with ev_default_fork */
1612} 2271}
1613 2272
1614/*****************************************************************************/ 2273/*****************************************************************************/
1615 2274
1616void 2275void
1617ev_invoke (EV_P_ void *w, int revents) 2276ev_invoke (EV_P_ void *w, int revents)
1618{ 2277{
1619 EV_CB_INVOKE ((W)w, revents); 2278 EV_CB_INVOKE ((W)w, revents);
1620} 2279}
1621 2280
1622void inline_speed 2281unsigned int
1623call_pending (EV_P) 2282ev_pending_count (EV_P)
2283{
2284 int pri;
2285 unsigned int count = 0;
2286
2287 for (pri = NUMPRI; pri--; )
2288 count += pendingcnt [pri];
2289
2290 return count;
2291}
2292
2293void noinline
2294ev_invoke_pending (EV_P)
1624{ 2295{
1625 int pri; 2296 int pri;
1626 2297
1627 for (pri = NUMPRI; pri--; ) 2298 for (pri = NUMPRI; pri--; )
1628 while (pendingcnt [pri]) 2299 while (pendingcnt [pri])
1629 { 2300 {
1630 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2301 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1631 2302
1632 if (expect_true (p->w))
1633 {
1634 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1635
1636 p->w->pending = 0; 2303 p->w->pending = 0;
1637 EV_CB_INVOKE (p->w, p->events); 2304 EV_CB_INVOKE (p->w, p->events);
1638 EV_FREQUENT_CHECK; 2305 EV_FREQUENT_CHECK;
1639 }
1640 } 2306 }
1641} 2307}
1642 2308
1643#if EV_IDLE_ENABLE 2309#if EV_IDLE_ENABLE
1644void inline_size 2310/* make idle watchers pending. this handles the "call-idle */
2311/* only when higher priorities are idle" logic */
2312inline_size void
1645idle_reify (EV_P) 2313idle_reify (EV_P)
1646{ 2314{
1647 if (expect_false (idleall)) 2315 if (expect_false (idleall))
1648 { 2316 {
1649 int pri; 2317 int pri;
… …
1661 } 2329 }
1662 } 2330 }
1663} 2331}
1664#endif 2332#endif
1665 2333
1666void inline_size 2334/* make timers pending */
2335inline_size void
1667timers_reify (EV_P) 2336timers_reify (EV_P)
1668{ 2337{
1669 EV_FREQUENT_CHECK; 2338 EV_FREQUENT_CHECK;
1670 2339
1671 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2340 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1672 { 2341 {
1673 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2342 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 { 2343 {
2344 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2345
2346 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2347
2348 /* first reschedule or stop timer */
2349 if (w->repeat)
2350 {
1680 ev_at (w) += w->repeat; 2351 ev_at (w) += w->repeat;
1681 if (ev_at (w) < mn_now) 2352 if (ev_at (w) < mn_now)
1682 ev_at (w) = mn_now; 2353 ev_at (w) = mn_now;
1683 2354
1684 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2355 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1685 2356
1686 ANHE_at_cache (timers [HEAP0]); 2357 ANHE_at_cache (timers [HEAP0]);
1687 downheap (timers, timercnt, HEAP0); 2358 downheap (timers, timercnt, HEAP0);
2359 }
2360 else
2361 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2362
2363 EV_FREQUENT_CHECK;
2364 feed_reverse (EV_A_ (W)w);
1688 } 2365 }
1689 else 2366 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1690 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1691 2367
1692 EV_FREQUENT_CHECK; 2368 feed_reverse_done (EV_A_ EV_TIMER);
1693 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1694 } 2369 }
1695} 2370}
1696 2371
1697#if EV_PERIODIC_ENABLE 2372#if EV_PERIODIC_ENABLE
1698void inline_size 2373
2374static void noinline
2375periodic_recalc (EV_P_ ev_periodic *w)
2376{
2377 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2378 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2379
2380 /* the above almost always errs on the low side */
2381 while (at <= ev_rt_now)
2382 {
2383 ev_tstamp nat = at + w->interval;
2384
2385 /* when resolution fails us, we use ev_rt_now */
2386 if (expect_false (nat == at))
2387 {
2388 at = ev_rt_now;
2389 break;
2390 }
2391
2392 at = nat;
2393 }
2394
2395 ev_at (w) = at;
2396}
2397
2398/* make periodics pending */
2399inline_size void
1699periodics_reify (EV_P) 2400periodics_reify (EV_P)
1700{ 2401{
1701 EV_FREQUENT_CHECK; 2402 EV_FREQUENT_CHECK;
1702 2403
1703 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2404 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1704 { 2405 {
1705 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2406 int feed_count = 0;
1706 2407
1707 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2408 do
1708
1709 /* first reschedule or stop timer */
1710 if (w->reschedule_cb)
1711 { 2409 {
2410 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2411
2412 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2413
2414 /* first reschedule or stop timer */
2415 if (w->reschedule_cb)
2416 {
1712 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2417 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1713 2418
1714 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2419 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1715 2420
1716 ANHE_at_cache (periodics [HEAP0]); 2421 ANHE_at_cache (periodics [HEAP0]);
1717 downheap (periodics, periodiccnt, HEAP0); 2422 downheap (periodics, periodiccnt, HEAP0);
2423 }
2424 else if (w->interval)
2425 {
2426 periodic_recalc (EV_A_ w);
2427 ANHE_at_cache (periodics [HEAP0]);
2428 downheap (periodics, periodiccnt, HEAP0);
2429 }
2430 else
2431 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2432
2433 EV_FREQUENT_CHECK;
2434 feed_reverse (EV_A_ (W)w);
1718 } 2435 }
1719 else if (w->interval) 2436 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 2437
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); 2438 feed_reverse_done (EV_A_ EV_PERIODIC);
1743 } 2439 }
1744} 2440}
1745 2441
2442/* simply recalculate all periodics */
2443/* TODO: maybe ensure that at least one event happens when jumping forward? */
1746static void noinline 2444static void noinline ecb_cold
1747periodics_reschedule (EV_P) 2445periodics_reschedule (EV_P)
1748{ 2446{
1749 int i; 2447 int i;
1750 2448
1751 /* adjust periodics after time jump */ 2449 /* adjust periodics after time jump */
… …
1754 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2452 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1755 2453
1756 if (w->reschedule_cb) 2454 if (w->reschedule_cb)
1757 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2455 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1758 else if (w->interval) 2456 else if (w->interval)
1759 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2457 periodic_recalc (EV_A_ w);
1760 2458
1761 ANHE_at_cache (periodics [i]); 2459 ANHE_at_cache (periodics [i]);
1762 } 2460 }
1763 2461
1764 reheap (periodics, periodiccnt); 2462 reheap (periodics, periodiccnt);
1765} 2463}
1766#endif 2464#endif
1767 2465
1768void inline_speed 2466/* adjust all timers by a given offset */
2467static void noinline ecb_cold
2468timers_reschedule (EV_P_ ev_tstamp adjust)
2469{
2470 int i;
2471
2472 for (i = 0; i < timercnt; ++i)
2473 {
2474 ANHE *he = timers + i + HEAP0;
2475 ANHE_w (*he)->at += adjust;
2476 ANHE_at_cache (*he);
2477 }
2478}
2479
2480/* fetch new monotonic and realtime times from the kernel */
2481/* also detect if there was a timejump, and act accordingly */
2482inline_speed void
1769time_update (EV_P_ ev_tstamp max_block) 2483time_update (EV_P_ ev_tstamp max_block)
1770{ 2484{
1771 int i;
1772
1773#if EV_USE_MONOTONIC 2485#if EV_USE_MONOTONIC
1774 if (expect_true (have_monotonic)) 2486 if (expect_true (have_monotonic))
1775 { 2487 {
2488 int i;
1776 ev_tstamp odiff = rtmn_diff; 2489 ev_tstamp odiff = rtmn_diff;
1777 2490
1778 mn_now = get_clock (); 2491 mn_now = get_clock ();
1779 2492
1780 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2493 /* 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 2509 * doesn't hurt either as we only do this on time-jumps or
1797 * in the unlikely event of having been preempted here. 2510 * in the unlikely event of having been preempted here.
1798 */ 2511 */
1799 for (i = 4; --i; ) 2512 for (i = 4; --i; )
1800 { 2513 {
2514 ev_tstamp diff;
1801 rtmn_diff = ev_rt_now - mn_now; 2515 rtmn_diff = ev_rt_now - mn_now;
1802 2516
2517 diff = odiff - rtmn_diff;
2518
1803 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2519 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1804 return; /* all is well */ 2520 return; /* all is well */
1805 2521
1806 ev_rt_now = ev_time (); 2522 ev_rt_now = ev_time ();
1807 mn_now = get_clock (); 2523 mn_now = get_clock ();
1808 now_floor = mn_now; 2524 now_floor = mn_now;
1809 } 2525 }
1810 2526
2527 /* no timer adjustment, as the monotonic clock doesn't jump */
2528 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1811# if EV_PERIODIC_ENABLE 2529# if EV_PERIODIC_ENABLE
1812 periodics_reschedule (EV_A); 2530 periodics_reschedule (EV_A);
1813# endif 2531# endif
1814 /* no timer adjustment, as the monotonic clock doesn't jump */
1815 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1816 } 2532 }
1817 else 2533 else
1818#endif 2534#endif
1819 { 2535 {
1820 ev_rt_now = ev_time (); 2536 ev_rt_now = ev_time ();
1821 2537
1822 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2538 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1823 { 2539 {
2540 /* adjust timers. this is easy, as the offset is the same for all of them */
2541 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1824#if EV_PERIODIC_ENABLE 2542#if EV_PERIODIC_ENABLE
1825 periodics_reschedule (EV_A); 2543 periodics_reschedule (EV_A);
1826#endif 2544#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 } 2545 }
1835 2546
1836 mn_now = ev_rt_now; 2547 mn_now = ev_rt_now;
1837 } 2548 }
1838} 2549}
1839 2550
1840void 2551void
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) 2552ev_run (EV_P_ int flags)
1856{ 2553{
2554#if EV_FEATURE_API
2555 ++loop_depth;
2556#endif
2557
2558 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2559
1857 loop_done = EVUNLOOP_CANCEL; 2560 loop_done = EVBREAK_CANCEL;
1858 2561
1859 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2562 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1860 2563
1861 do 2564 do
1862 { 2565 {
1863#if EV_VERIFY >= 2 2566#if EV_VERIFY >= 2
1864 ev_loop_verify (EV_A); 2567 ev_verify (EV_A);
1865#endif 2568#endif
1866 2569
1867#ifndef _WIN32 2570#ifndef _WIN32
1868 if (expect_false (curpid)) /* penalise the forking check even more */ 2571 if (expect_false (curpid)) /* penalise the forking check even more */
1869 if (expect_false (getpid () != curpid)) 2572 if (expect_false (getpid () != curpid))
… …
1877 /* we might have forked, so queue fork handlers */ 2580 /* we might have forked, so queue fork handlers */
1878 if (expect_false (postfork)) 2581 if (expect_false (postfork))
1879 if (forkcnt) 2582 if (forkcnt)
1880 { 2583 {
1881 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2584 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1882 call_pending (EV_A); 2585 EV_INVOKE_PENDING;
1883 } 2586 }
1884#endif 2587#endif
1885 2588
2589#if EV_PREPARE_ENABLE
1886 /* queue prepare watchers (and execute them) */ 2590 /* queue prepare watchers (and execute them) */
1887 if (expect_false (preparecnt)) 2591 if (expect_false (preparecnt))
1888 { 2592 {
1889 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2593 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1890 call_pending (EV_A); 2594 EV_INVOKE_PENDING;
1891 } 2595 }
2596#endif
1892 2597
1893 if (expect_false (!activecnt)) 2598 if (expect_false (loop_done))
1894 break; 2599 break;
1895 2600
1896 /* we might have forked, so reify kernel state if necessary */ 2601 /* we might have forked, so reify kernel state if necessary */
1897 if (expect_false (postfork)) 2602 if (expect_false (postfork))
1898 loop_fork (EV_A); 2603 loop_fork (EV_A);
… …
1903 /* calculate blocking time */ 2608 /* calculate blocking time */
1904 { 2609 {
1905 ev_tstamp waittime = 0.; 2610 ev_tstamp waittime = 0.;
1906 ev_tstamp sleeptime = 0.; 2611 ev_tstamp sleeptime = 0.;
1907 2612
2613 /* remember old timestamp for io_blocktime calculation */
2614 ev_tstamp prev_mn_now = mn_now;
2615
2616 /* update time to cancel out callback processing overhead */
2617 time_update (EV_A_ 1e100);
2618
2619 /* from now on, we want a pipe-wake-up */
2620 pipe_write_wanted = 1;
2621
2622 ECB_MEMORY_FENCE; /* amke sure pipe_write_wanted is visible before we check for potential skips */
2623
1908 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2624 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1909 { 2625 {
1910 /* update time to cancel out callback processing overhead */
1911 time_update (EV_A_ 1e100);
1912
1913 waittime = MAX_BLOCKTIME; 2626 waittime = MAX_BLOCKTIME;
1914 2627
1915 if (timercnt) 2628 if (timercnt)
1916 { 2629 {
1917 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2630 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1918 if (waittime > to) waittime = to; 2631 if (waittime > to) waittime = to;
1919 } 2632 }
1920 2633
1921#if EV_PERIODIC_ENABLE 2634#if EV_PERIODIC_ENABLE
1922 if (periodiccnt) 2635 if (periodiccnt)
1923 { 2636 {
1924 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2637 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1925 if (waittime > to) waittime = to; 2638 if (waittime > to) waittime = to;
1926 } 2639 }
1927#endif 2640#endif
1928 2641
2642 /* don't let timeouts decrease the waittime below timeout_blocktime */
1929 if (expect_false (waittime < timeout_blocktime)) 2643 if (expect_false (waittime < timeout_blocktime))
1930 waittime = timeout_blocktime; 2644 waittime = timeout_blocktime;
1931 2645
1932 sleeptime = waittime - backend_fudge; 2646 /* at this point, we NEED to wait, so we have to ensure */
2647 /* to pass a minimum nonzero value to the backend */
2648 if (expect_false (waittime < backend_mintime))
2649 waittime = backend_mintime;
1933 2650
2651 /* extra check because io_blocktime is commonly 0 */
1934 if (expect_true (sleeptime > io_blocktime)) 2652 if (expect_false (io_blocktime))
1935 sleeptime = io_blocktime;
1936
1937 if (sleeptime)
1938 { 2653 {
2654 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2655
2656 if (sleeptime > waittime - backend_mintime)
2657 sleeptime = waittime - backend_mintime;
2658
2659 if (expect_true (sleeptime > 0.))
2660 {
1939 ev_sleep (sleeptime); 2661 ev_sleep (sleeptime);
1940 waittime -= sleeptime; 2662 waittime -= sleeptime;
2663 }
1941 } 2664 }
1942 } 2665 }
1943 2666
2667#if EV_FEATURE_API
1944 ++loop_count; 2668 ++loop_count;
2669#endif
2670 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1945 backend_poll (EV_A_ waittime); 2671 backend_poll (EV_A_ waittime);
2672 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2673
2674 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2675
2676 if (pipe_write_skipped)
2677 {
2678 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2679 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2680 }
2681
1946 2682
1947 /* update ev_rt_now, do magic */ 2683 /* update ev_rt_now, do magic */
1948 time_update (EV_A_ waittime + sleeptime); 2684 time_update (EV_A_ waittime + sleeptime);
1949 } 2685 }
1950 2686
… …
1957#if EV_IDLE_ENABLE 2693#if EV_IDLE_ENABLE
1958 /* queue idle watchers unless other events are pending */ 2694 /* queue idle watchers unless other events are pending */
1959 idle_reify (EV_A); 2695 idle_reify (EV_A);
1960#endif 2696#endif
1961 2697
2698#if EV_CHECK_ENABLE
1962 /* queue check watchers, to be executed first */ 2699 /* queue check watchers, to be executed first */
1963 if (expect_false (checkcnt)) 2700 if (expect_false (checkcnt))
1964 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2701 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2702#endif
1965 2703
1966 call_pending (EV_A); 2704 EV_INVOKE_PENDING;
1967 } 2705 }
1968 while (expect_true ( 2706 while (expect_true (
1969 activecnt 2707 activecnt
1970 && !loop_done 2708 && !loop_done
1971 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2709 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1972 )); 2710 ));
1973 2711
1974 if (loop_done == EVUNLOOP_ONE) 2712 if (loop_done == EVBREAK_ONE)
1975 loop_done = EVUNLOOP_CANCEL; 2713 loop_done = EVBREAK_CANCEL;
2714
2715#if EV_FEATURE_API
2716 --loop_depth;
2717#endif
1976} 2718}
1977 2719
1978void 2720void
1979ev_unloop (EV_P_ int how) 2721ev_break (EV_P_ int how)
1980{ 2722{
1981 loop_done = how; 2723 loop_done = how;
1982} 2724}
1983 2725
2726void
2727ev_ref (EV_P)
2728{
2729 ++activecnt;
2730}
2731
2732void
2733ev_unref (EV_P)
2734{
2735 --activecnt;
2736}
2737
2738void
2739ev_now_update (EV_P)
2740{
2741 time_update (EV_A_ 1e100);
2742}
2743
2744void
2745ev_suspend (EV_P)
2746{
2747 ev_now_update (EV_A);
2748}
2749
2750void
2751ev_resume (EV_P)
2752{
2753 ev_tstamp mn_prev = mn_now;
2754
2755 ev_now_update (EV_A);
2756 timers_reschedule (EV_A_ mn_now - mn_prev);
2757#if EV_PERIODIC_ENABLE
2758 /* TODO: really do this? */
2759 periodics_reschedule (EV_A);
2760#endif
2761}
2762
1984/*****************************************************************************/ 2763/*****************************************************************************/
2764/* singly-linked list management, used when the expected list length is short */
1985 2765
1986void inline_size 2766inline_size void
1987wlist_add (WL *head, WL elem) 2767wlist_add (WL *head, WL elem)
1988{ 2768{
1989 elem->next = *head; 2769 elem->next = *head;
1990 *head = elem; 2770 *head = elem;
1991} 2771}
1992 2772
1993void inline_size 2773inline_size void
1994wlist_del (WL *head, WL elem) 2774wlist_del (WL *head, WL elem)
1995{ 2775{
1996 while (*head) 2776 while (*head)
1997 { 2777 {
1998 if (*head == elem) 2778 if (expect_true (*head == elem))
1999 { 2779 {
2000 *head = elem->next; 2780 *head = elem->next;
2001 return; 2781 break;
2002 } 2782 }
2003 2783
2004 head = &(*head)->next; 2784 head = &(*head)->next;
2005 } 2785 }
2006} 2786}
2007 2787
2008void inline_speed 2788/* internal, faster, version of ev_clear_pending */
2789inline_speed void
2009clear_pending (EV_P_ W w) 2790clear_pending (EV_P_ W w)
2010{ 2791{
2011 if (w->pending) 2792 if (w->pending)
2012 { 2793 {
2013 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2794 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2014 w->pending = 0; 2795 w->pending = 0;
2015 } 2796 }
2016} 2797}
2017 2798
2018int 2799int
… …
2022 int pending = w_->pending; 2803 int pending = w_->pending;
2023 2804
2024 if (expect_true (pending)) 2805 if (expect_true (pending))
2025 { 2806 {
2026 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2807 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2808 p->w = (W)&pending_w;
2027 w_->pending = 0; 2809 w_->pending = 0;
2028 p->w = 0;
2029 return p->events; 2810 return p->events;
2030 } 2811 }
2031 else 2812 else
2032 return 0; 2813 return 0;
2033} 2814}
2034 2815
2035void inline_size 2816inline_size void
2036pri_adjust (EV_P_ W w) 2817pri_adjust (EV_P_ W w)
2037{ 2818{
2038 int pri = w->priority; 2819 int pri = ev_priority (w);
2039 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2820 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2040 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2821 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2041 w->priority = pri; 2822 ev_set_priority (w, pri);
2042} 2823}
2043 2824
2044void inline_speed 2825inline_speed void
2045ev_start (EV_P_ W w, int active) 2826ev_start (EV_P_ W w, int active)
2046{ 2827{
2047 pri_adjust (EV_A_ w); 2828 pri_adjust (EV_A_ w);
2048 w->active = active; 2829 w->active = active;
2049 ev_ref (EV_A); 2830 ev_ref (EV_A);
2050} 2831}
2051 2832
2052void inline_size 2833inline_size void
2053ev_stop (EV_P_ W w) 2834ev_stop (EV_P_ W w)
2054{ 2835{
2055 ev_unref (EV_A); 2836 ev_unref (EV_A);
2056 w->active = 0; 2837 w->active = 0;
2057} 2838}
… …
2064 int fd = w->fd; 2845 int fd = w->fd;
2065 2846
2066 if (expect_false (ev_is_active (w))) 2847 if (expect_false (ev_is_active (w)))
2067 return; 2848 return;
2068 2849
2069 assert (("ev_io_start called with negative fd", fd >= 0)); 2850 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2851 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2070 2852
2071 EV_FREQUENT_CHECK; 2853 EV_FREQUENT_CHECK;
2072 2854
2073 ev_start (EV_A_ (W)w, 1); 2855 ev_start (EV_A_ (W)w, 1);
2074 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2856 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2075 wlist_add (&anfds[fd].head, (WL)w); 2857 wlist_add (&anfds[fd].head, (WL)w);
2076 2858
2077 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2859 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2078 w->events &= ~EV_IOFDSET; 2860 w->events &= ~EV__IOFDSET;
2079 2861
2080 EV_FREQUENT_CHECK; 2862 EV_FREQUENT_CHECK;
2081} 2863}
2082 2864
2083void noinline 2865void noinline
… …
2085{ 2867{
2086 clear_pending (EV_A_ (W)w); 2868 clear_pending (EV_A_ (W)w);
2087 if (expect_false (!ev_is_active (w))) 2869 if (expect_false (!ev_is_active (w)))
2088 return; 2870 return;
2089 2871
2090 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2872 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2091 2873
2092 EV_FREQUENT_CHECK; 2874 EV_FREQUENT_CHECK;
2093 2875
2094 wlist_del (&anfds[w->fd].head, (WL)w); 2876 wlist_del (&anfds[w->fd].head, (WL)w);
2095 ev_stop (EV_A_ (W)w); 2877 ev_stop (EV_A_ (W)w);
2096 2878
2097 fd_change (EV_A_ w->fd, 1); 2879 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2098 2880
2099 EV_FREQUENT_CHECK; 2881 EV_FREQUENT_CHECK;
2100} 2882}
2101 2883
2102void noinline 2884void noinline
… …
2105 if (expect_false (ev_is_active (w))) 2887 if (expect_false (ev_is_active (w)))
2106 return; 2888 return;
2107 2889
2108 ev_at (w) += mn_now; 2890 ev_at (w) += mn_now;
2109 2891
2110 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2892 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2111 2893
2112 EV_FREQUENT_CHECK; 2894 EV_FREQUENT_CHECK;
2113 2895
2114 ++timercnt; 2896 ++timercnt;
2115 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2897 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2118 ANHE_at_cache (timers [ev_active (w)]); 2900 ANHE_at_cache (timers [ev_active (w)]);
2119 upheap (timers, ev_active (w)); 2901 upheap (timers, ev_active (w));
2120 2902
2121 EV_FREQUENT_CHECK; 2903 EV_FREQUENT_CHECK;
2122 2904
2123 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2905 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2124} 2906}
2125 2907
2126void noinline 2908void noinline
2127ev_timer_stop (EV_P_ ev_timer *w) 2909ev_timer_stop (EV_P_ ev_timer *w)
2128{ 2910{
… …
2133 EV_FREQUENT_CHECK; 2915 EV_FREQUENT_CHECK;
2134 2916
2135 { 2917 {
2136 int active = ev_active (w); 2918 int active = ev_active (w);
2137 2919
2138 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2920 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2139 2921
2140 --timercnt; 2922 --timercnt;
2141 2923
2142 if (expect_true (active < timercnt + HEAP0)) 2924 if (expect_true (active < timercnt + HEAP0))
2143 { 2925 {
2144 timers [active] = timers [timercnt + HEAP0]; 2926 timers [active] = timers [timercnt + HEAP0];
2145 adjustheap (timers, timercnt, active); 2927 adjustheap (timers, timercnt, active);
2146 } 2928 }
2147 } 2929 }
2148 2930
2149 EV_FREQUENT_CHECK;
2150
2151 ev_at (w) -= mn_now; 2931 ev_at (w) -= mn_now;
2152 2932
2153 ev_stop (EV_A_ (W)w); 2933 ev_stop (EV_A_ (W)w);
2934
2935 EV_FREQUENT_CHECK;
2154} 2936}
2155 2937
2156void noinline 2938void noinline
2157ev_timer_again (EV_P_ ev_timer *w) 2939ev_timer_again (EV_P_ ev_timer *w)
2158{ 2940{
… …
2176 } 2958 }
2177 2959
2178 EV_FREQUENT_CHECK; 2960 EV_FREQUENT_CHECK;
2179} 2961}
2180 2962
2963ev_tstamp
2964ev_timer_remaining (EV_P_ ev_timer *w)
2965{
2966 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2967}
2968
2181#if EV_PERIODIC_ENABLE 2969#if EV_PERIODIC_ENABLE
2182void noinline 2970void noinline
2183ev_periodic_start (EV_P_ ev_periodic *w) 2971ev_periodic_start (EV_P_ ev_periodic *w)
2184{ 2972{
2185 if (expect_false (ev_is_active (w))) 2973 if (expect_false (ev_is_active (w)))
… …
2187 2975
2188 if (w->reschedule_cb) 2976 if (w->reschedule_cb)
2189 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2977 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2190 else if (w->interval) 2978 else if (w->interval)
2191 { 2979 {
2192 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2980 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 */ 2981 periodic_recalc (EV_A_ w);
2194 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2195 } 2982 }
2196 else 2983 else
2197 ev_at (w) = w->offset; 2984 ev_at (w) = w->offset;
2198 2985
2199 EV_FREQUENT_CHECK; 2986 EV_FREQUENT_CHECK;
… …
2205 ANHE_at_cache (periodics [ev_active (w)]); 2992 ANHE_at_cache (periodics [ev_active (w)]);
2206 upheap (periodics, ev_active (w)); 2993 upheap (periodics, ev_active (w));
2207 2994
2208 EV_FREQUENT_CHECK; 2995 EV_FREQUENT_CHECK;
2209 2996
2210 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2997 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2211} 2998}
2212 2999
2213void noinline 3000void noinline
2214ev_periodic_stop (EV_P_ ev_periodic *w) 3001ev_periodic_stop (EV_P_ ev_periodic *w)
2215{ 3002{
… …
2220 EV_FREQUENT_CHECK; 3007 EV_FREQUENT_CHECK;
2221 3008
2222 { 3009 {
2223 int active = ev_active (w); 3010 int active = ev_active (w);
2224 3011
2225 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 3012 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2226 3013
2227 --periodiccnt; 3014 --periodiccnt;
2228 3015
2229 if (expect_true (active < periodiccnt + HEAP0)) 3016 if (expect_true (active < periodiccnt + HEAP0))
2230 { 3017 {
2231 periodics [active] = periodics [periodiccnt + HEAP0]; 3018 periodics [active] = periodics [periodiccnt + HEAP0];
2232 adjustheap (periodics, periodiccnt, active); 3019 adjustheap (periodics, periodiccnt, active);
2233 } 3020 }
2234 } 3021 }
2235 3022
2236 EV_FREQUENT_CHECK;
2237
2238 ev_stop (EV_A_ (W)w); 3023 ev_stop (EV_A_ (W)w);
3024
3025 EV_FREQUENT_CHECK;
2239} 3026}
2240 3027
2241void noinline 3028void noinline
2242ev_periodic_again (EV_P_ ev_periodic *w) 3029ev_periodic_again (EV_P_ ev_periodic *w)
2243{ 3030{
… …
2249 3036
2250#ifndef SA_RESTART 3037#ifndef SA_RESTART
2251# define SA_RESTART 0 3038# define SA_RESTART 0
2252#endif 3039#endif
2253 3040
3041#if EV_SIGNAL_ENABLE
3042
2254void noinline 3043void noinline
2255ev_signal_start (EV_P_ ev_signal *w) 3044ev_signal_start (EV_P_ ev_signal *w)
2256{ 3045{
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))) 3046 if (expect_false (ev_is_active (w)))
2261 return; 3047 return;
2262 3048
2263 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3049 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2264 3050
2265 evpipe_init (EV_A); 3051#if EV_MULTIPLICITY
3052 assert (("libev: a signal must not be attached to two different loops",
3053 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2266 3054
2267 EV_FREQUENT_CHECK; 3055 signals [w->signum - 1].loop = EV_A;
3056#endif
2268 3057
3058 EV_FREQUENT_CHECK;
3059
3060#if EV_USE_SIGNALFD
3061 if (sigfd == -2)
2269 { 3062 {
2270#ifndef _WIN32 3063 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2271 sigset_t full, prev; 3064 if (sigfd < 0 && errno == EINVAL)
2272 sigfillset (&full); 3065 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2273 sigprocmask (SIG_SETMASK, &full, &prev);
2274#endif
2275 3066
2276 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3067 if (sigfd >= 0)
3068 {
3069 fd_intern (sigfd); /* doing it twice will not hurt */
2277 3070
2278#ifndef _WIN32 3071 sigemptyset (&sigfd_set);
2279 sigprocmask (SIG_SETMASK, &prev, 0); 3072
2280#endif 3073 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3074 ev_set_priority (&sigfd_w, EV_MAXPRI);
3075 ev_io_start (EV_A_ &sigfd_w);
3076 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3077 }
2281 } 3078 }
3079
3080 if (sigfd >= 0)
3081 {
3082 /* TODO: check .head */
3083 sigaddset (&sigfd_set, w->signum);
3084 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3085
3086 signalfd (sigfd, &sigfd_set, 0);
3087 }
3088#endif
2282 3089
2283 ev_start (EV_A_ (W)w, 1); 3090 ev_start (EV_A_ (W)w, 1);
2284 wlist_add (&signals [w->signum - 1].head, (WL)w); 3091 wlist_add (&signals [w->signum - 1].head, (WL)w);
2285 3092
2286 if (!((WL)w)->next) 3093 if (!((WL)w)->next)
3094# if EV_USE_SIGNALFD
3095 if (sigfd < 0) /*TODO*/
3096# endif
2287 { 3097 {
2288#if _WIN32 3098# ifdef _WIN32
3099 evpipe_init (EV_A);
3100
2289 signal (w->signum, ev_sighandler); 3101 signal (w->signum, ev_sighandler);
2290#else 3102# else
2291 struct sigaction sa; 3103 struct sigaction sa;
3104
3105 evpipe_init (EV_A);
3106
2292 sa.sa_handler = ev_sighandler; 3107 sa.sa_handler = ev_sighandler;
2293 sigfillset (&sa.sa_mask); 3108 sigfillset (&sa.sa_mask);
2294 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3109 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2295 sigaction (w->signum, &sa, 0); 3110 sigaction (w->signum, &sa, 0);
3111
3112 if (origflags & EVFLAG_NOSIGMASK)
3113 {
3114 sigemptyset (&sa.sa_mask);
3115 sigaddset (&sa.sa_mask, w->signum);
3116 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3117 }
2296#endif 3118#endif
2297 } 3119 }
2298 3120
2299 EV_FREQUENT_CHECK; 3121 EV_FREQUENT_CHECK;
2300} 3122}
2301 3123
2302void noinline 3124void noinline
… …
2310 3132
2311 wlist_del (&signals [w->signum - 1].head, (WL)w); 3133 wlist_del (&signals [w->signum - 1].head, (WL)w);
2312 ev_stop (EV_A_ (W)w); 3134 ev_stop (EV_A_ (W)w);
2313 3135
2314 if (!signals [w->signum - 1].head) 3136 if (!signals [w->signum - 1].head)
3137 {
3138#if EV_MULTIPLICITY
3139 signals [w->signum - 1].loop = 0; /* unattach from signal */
3140#endif
3141#if EV_USE_SIGNALFD
3142 if (sigfd >= 0)
3143 {
3144 sigset_t ss;
3145
3146 sigemptyset (&ss);
3147 sigaddset (&ss, w->signum);
3148 sigdelset (&sigfd_set, w->signum);
3149
3150 signalfd (sigfd, &sigfd_set, 0);
3151 sigprocmask (SIG_UNBLOCK, &ss, 0);
3152 }
3153 else
3154#endif
2315 signal (w->signum, SIG_DFL); 3155 signal (w->signum, SIG_DFL);
3156 }
2316 3157
2317 EV_FREQUENT_CHECK; 3158 EV_FREQUENT_CHECK;
2318} 3159}
3160
3161#endif
3162
3163#if EV_CHILD_ENABLE
2319 3164
2320void 3165void
2321ev_child_start (EV_P_ ev_child *w) 3166ev_child_start (EV_P_ ev_child *w)
2322{ 3167{
2323#if EV_MULTIPLICITY 3168#if EV_MULTIPLICITY
2324 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3169 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2325#endif 3170#endif
2326 if (expect_false (ev_is_active (w))) 3171 if (expect_false (ev_is_active (w)))
2327 return; 3172 return;
2328 3173
2329 EV_FREQUENT_CHECK; 3174 EV_FREQUENT_CHECK;
2330 3175
2331 ev_start (EV_A_ (W)w, 1); 3176 ev_start (EV_A_ (W)w, 1);
2332 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3177 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2333 3178
2334 EV_FREQUENT_CHECK; 3179 EV_FREQUENT_CHECK;
2335} 3180}
2336 3181
2337void 3182void
… …
2341 if (expect_false (!ev_is_active (w))) 3186 if (expect_false (!ev_is_active (w)))
2342 return; 3187 return;
2343 3188
2344 EV_FREQUENT_CHECK; 3189 EV_FREQUENT_CHECK;
2345 3190
2346 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3191 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2347 ev_stop (EV_A_ (W)w); 3192 ev_stop (EV_A_ (W)w);
2348 3193
2349 EV_FREQUENT_CHECK; 3194 EV_FREQUENT_CHECK;
2350} 3195}
3196
3197#endif
2351 3198
2352#if EV_STAT_ENABLE 3199#if EV_STAT_ENABLE
2353 3200
2354# ifdef _WIN32 3201# ifdef _WIN32
2355# undef lstat 3202# undef lstat
2356# define lstat(a,b) _stati64 (a,b) 3203# define lstat(a,b) _stati64 (a,b)
2357# endif 3204# endif
2358 3205
2359#define DEF_STAT_INTERVAL 5.0074891 3206#define DEF_STAT_INTERVAL 5.0074891
3207#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2360#define MIN_STAT_INTERVAL 0.1074891 3208#define MIN_STAT_INTERVAL 0.1074891
2361 3209
2362static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3210static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2363 3211
2364#if EV_USE_INOTIFY 3212#if EV_USE_INOTIFY
2365# define EV_INOTIFY_BUFSIZE 8192 3213
3214/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3215# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2366 3216
2367static void noinline 3217static void noinline
2368infy_add (EV_P_ ev_stat *w) 3218infy_add (EV_P_ ev_stat *w)
2369{ 3219{
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); 3220 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 3221
2372 if (w->wd < 0) 3222 if (w->wd >= 0)
3223 {
3224 struct statfs sfs;
3225
3226 /* now local changes will be tracked by inotify, but remote changes won't */
3227 /* unless the filesystem is known to be local, we therefore still poll */
3228 /* also do poll on <2.6.25, but with normal frequency */
3229
3230 if (!fs_2625)
3231 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3232 else if (!statfs (w->path, &sfs)
3233 && (sfs.f_type == 0x1373 /* devfs */
3234 || sfs.f_type == 0xEF53 /* ext2/3 */
3235 || sfs.f_type == 0x3153464a /* jfs */
3236 || sfs.f_type == 0x52654973 /* reiser3 */
3237 || sfs.f_type == 0x01021994 /* tempfs */
3238 || sfs.f_type == 0x58465342 /* xfs */))
3239 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3240 else
3241 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2373 { 3242 }
2374 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3243 else
3244 {
3245 /* can't use inotify, continue to stat */
3246 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2375 3247
2376 /* monitor some parent directory for speedup hints */ 3248 /* if path is not there, monitor some parent directory for speedup hints */
2377 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3249 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2378 /* but an efficiency issue only */ 3250 /* but an efficiency issue only */
2379 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3251 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2380 { 3252 {
2381 char path [4096]; 3253 char path [4096];
2382 strcpy (path, w->path); 3254 strcpy (path, w->path);
… …
2386 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3258 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2387 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3259 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2388 3260
2389 char *pend = strrchr (path, '/'); 3261 char *pend = strrchr (path, '/');
2390 3262
2391 if (!pend) 3263 if (!pend || pend == path)
2392 break; /* whoops, no '/', complain to your admin */ 3264 break;
2393 3265
2394 *pend = 0; 3266 *pend = 0;
2395 w->wd = inotify_add_watch (fs_fd, path, mask); 3267 w->wd = inotify_add_watch (fs_fd, path, mask);
2396 } 3268 }
2397 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3269 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2398 } 3270 }
2399 } 3271 }
2400 else
2401 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2402 3272
2403 if (w->wd >= 0) 3273 if (w->wd >= 0)
2404 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3274 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3275
3276 /* now re-arm timer, if required */
3277 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3278 ev_timer_again (EV_A_ &w->timer);
3279 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2405} 3280}
2406 3281
2407static void noinline 3282static void noinline
2408infy_del (EV_P_ ev_stat *w) 3283infy_del (EV_P_ ev_stat *w)
2409{ 3284{
… …
2412 3287
2413 if (wd < 0) 3288 if (wd < 0)
2414 return; 3289 return;
2415 3290
2416 w->wd = -2; 3291 w->wd = -2;
2417 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3292 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2418 wlist_del (&fs_hash [slot].head, (WL)w); 3293 wlist_del (&fs_hash [slot].head, (WL)w);
2419 3294
2420 /* remove this watcher, if others are watching it, they will rearm */ 3295 /* remove this watcher, if others are watching it, they will rearm */
2421 inotify_rm_watch (fs_fd, wd); 3296 inotify_rm_watch (fs_fd, wd);
2422} 3297}
2423 3298
2424static void noinline 3299static void noinline
2425infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3300infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2426{ 3301{
2427 if (slot < 0) 3302 if (slot < 0)
2428 /* overflow, need to check for all hahs slots */ 3303 /* overflow, need to check for all hash slots */
2429 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3304 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2430 infy_wd (EV_A_ slot, wd, ev); 3305 infy_wd (EV_A_ slot, wd, ev);
2431 else 3306 else
2432 { 3307 {
2433 WL w_; 3308 WL w_;
2434 3309
2435 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3310 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2436 { 3311 {
2437 ev_stat *w = (ev_stat *)w_; 3312 ev_stat *w = (ev_stat *)w_;
2438 w_ = w_->next; /* lets us remove this watcher and all before it */ 3313 w_ = w_->next; /* lets us remove this watcher and all before it */
2439 3314
2440 if (w->wd == wd || wd == -1) 3315 if (w->wd == wd || wd == -1)
2441 { 3316 {
2442 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3317 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2443 { 3318 {
3319 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2444 w->wd = -1; 3320 w->wd = -1;
2445 infy_add (EV_A_ w); /* re-add, no matter what */ 3321 infy_add (EV_A_ w); /* re-add, no matter what */
2446 } 3322 }
2447 3323
2448 stat_timer_cb (EV_A_ &w->timer, 0); 3324 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2453 3329
2454static void 3330static void
2455infy_cb (EV_P_ ev_io *w, int revents) 3331infy_cb (EV_P_ ev_io *w, int revents)
2456{ 3332{
2457 char buf [EV_INOTIFY_BUFSIZE]; 3333 char buf [EV_INOTIFY_BUFSIZE];
2458 struct inotify_event *ev = (struct inotify_event *)buf;
2459 int ofs; 3334 int ofs;
2460 int len = read (fs_fd, buf, sizeof (buf)); 3335 int len = read (fs_fd, buf, sizeof (buf));
2461 3336
2462 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3337 for (ofs = 0; ofs < len; )
3338 {
3339 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2463 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3340 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3341 ofs += sizeof (struct inotify_event) + ev->len;
3342 }
2464} 3343}
2465 3344
2466void inline_size 3345inline_size void ecb_cold
3346ev_check_2625 (EV_P)
3347{
3348 /* kernels < 2.6.25 are borked
3349 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3350 */
3351 if (ev_linux_version () < 0x020619)
3352 return;
3353
3354 fs_2625 = 1;
3355}
3356
3357inline_size int
3358infy_newfd (void)
3359{
3360#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3361 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3362 if (fd >= 0)
3363 return fd;
3364#endif
3365 return inotify_init ();
3366}
3367
3368inline_size void
2467infy_init (EV_P) 3369infy_init (EV_P)
2468{ 3370{
2469 if (fs_fd != -2) 3371 if (fs_fd != -2)
2470 return; 3372 return;
2471 3373
3374 fs_fd = -1;
3375
3376 ev_check_2625 (EV_A);
3377
2472 fs_fd = inotify_init (); 3378 fs_fd = infy_newfd ();
2473 3379
2474 if (fs_fd >= 0) 3380 if (fs_fd >= 0)
2475 { 3381 {
3382 fd_intern (fs_fd);
2476 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3383 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2477 ev_set_priority (&fs_w, EV_MAXPRI); 3384 ev_set_priority (&fs_w, EV_MAXPRI);
2478 ev_io_start (EV_A_ &fs_w); 3385 ev_io_start (EV_A_ &fs_w);
3386 ev_unref (EV_A);
2479 } 3387 }
2480} 3388}
2481 3389
2482void inline_size 3390inline_size void
2483infy_fork (EV_P) 3391infy_fork (EV_P)
2484{ 3392{
2485 int slot; 3393 int slot;
2486 3394
2487 if (fs_fd < 0) 3395 if (fs_fd < 0)
2488 return; 3396 return;
2489 3397
3398 ev_ref (EV_A);
3399 ev_io_stop (EV_A_ &fs_w);
2490 close (fs_fd); 3400 close (fs_fd);
2491 fs_fd = inotify_init (); 3401 fs_fd = infy_newfd ();
2492 3402
3403 if (fs_fd >= 0)
3404 {
3405 fd_intern (fs_fd);
3406 ev_io_set (&fs_w, fs_fd, EV_READ);
3407 ev_io_start (EV_A_ &fs_w);
3408 ev_unref (EV_A);
3409 }
3410
2493 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3411 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2494 { 3412 {
2495 WL w_ = fs_hash [slot].head; 3413 WL w_ = fs_hash [slot].head;
2496 fs_hash [slot].head = 0; 3414 fs_hash [slot].head = 0;
2497 3415
2498 while (w_) 3416 while (w_)
… …
2503 w->wd = -1; 3421 w->wd = -1;
2504 3422
2505 if (fs_fd >= 0) 3423 if (fs_fd >= 0)
2506 infy_add (EV_A_ w); /* re-add, no matter what */ 3424 infy_add (EV_A_ w); /* re-add, no matter what */
2507 else 3425 else
3426 {
3427 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3428 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2508 ev_timer_start (EV_A_ &w->timer); 3429 ev_timer_again (EV_A_ &w->timer);
3430 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3431 }
2509 } 3432 }
2510
2511 } 3433 }
2512} 3434}
2513 3435
3436#endif
3437
3438#ifdef _WIN32
3439# define EV_LSTAT(p,b) _stati64 (p, b)
3440#else
3441# define EV_LSTAT(p,b) lstat (p, b)
2514#endif 3442#endif
2515 3443
2516void 3444void
2517ev_stat_stat (EV_P_ ev_stat *w) 3445ev_stat_stat (EV_P_ ev_stat *w)
2518{ 3446{
… …
2525static void noinline 3453static void noinline
2526stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3454stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2527{ 3455{
2528 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3456 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2529 3457
2530 /* we copy this here each the time so that */ 3458 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); 3459 ev_stat_stat (EV_A_ w);
2534 3460
2535 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3461 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2536 if ( 3462 if (
2537 w->prev.st_dev != w->attr.st_dev 3463 prev.st_dev != w->attr.st_dev
2538 || w->prev.st_ino != w->attr.st_ino 3464 || prev.st_ino != w->attr.st_ino
2539 || w->prev.st_mode != w->attr.st_mode 3465 || prev.st_mode != w->attr.st_mode
2540 || w->prev.st_nlink != w->attr.st_nlink 3466 || prev.st_nlink != w->attr.st_nlink
2541 || w->prev.st_uid != w->attr.st_uid 3467 || prev.st_uid != w->attr.st_uid
2542 || w->prev.st_gid != w->attr.st_gid 3468 || prev.st_gid != w->attr.st_gid
2543 || w->prev.st_rdev != w->attr.st_rdev 3469 || prev.st_rdev != w->attr.st_rdev
2544 || w->prev.st_size != w->attr.st_size 3470 || prev.st_size != w->attr.st_size
2545 || w->prev.st_atime != w->attr.st_atime 3471 || prev.st_atime != w->attr.st_atime
2546 || w->prev.st_mtime != w->attr.st_mtime 3472 || prev.st_mtime != w->attr.st_mtime
2547 || w->prev.st_ctime != w->attr.st_ctime 3473 || prev.st_ctime != w->attr.st_ctime
2548 ) { 3474 ) {
3475 /* we only update w->prev on actual differences */
3476 /* in case we test more often than invoke the callback, */
3477 /* to ensure that prev is always different to attr */
3478 w->prev = prev;
3479
2549 #if EV_USE_INOTIFY 3480 #if EV_USE_INOTIFY
3481 if (fs_fd >= 0)
3482 {
2550 infy_del (EV_A_ w); 3483 infy_del (EV_A_ w);
2551 infy_add (EV_A_ w); 3484 infy_add (EV_A_ w);
2552 ev_stat_stat (EV_A_ w); /* avoid race... */ 3485 ev_stat_stat (EV_A_ w); /* avoid race... */
3486 }
2553 #endif 3487 #endif
2554 3488
2555 ev_feed_event (EV_A_ w, EV_STAT); 3489 ev_feed_event (EV_A_ w, EV_STAT);
2556 } 3490 }
2557} 3491}
… …
2560ev_stat_start (EV_P_ ev_stat *w) 3494ev_stat_start (EV_P_ ev_stat *w)
2561{ 3495{
2562 if (expect_false (ev_is_active (w))) 3496 if (expect_false (ev_is_active (w)))
2563 return; 3497 return;
2564 3498
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); 3499 ev_stat_stat (EV_A_ w);
2570 3500
3501 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2571 if (w->interval < MIN_STAT_INTERVAL) 3502 w->interval = MIN_STAT_INTERVAL;
2572 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2573 3503
2574 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3504 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)); 3505 ev_set_priority (&w->timer, ev_priority (w));
2576 3506
2577#if EV_USE_INOTIFY 3507#if EV_USE_INOTIFY
2578 infy_init (EV_A); 3508 infy_init (EV_A);
2579 3509
2580 if (fs_fd >= 0) 3510 if (fs_fd >= 0)
2581 infy_add (EV_A_ w); 3511 infy_add (EV_A_ w);
2582 else 3512 else
2583#endif 3513#endif
3514 {
2584 ev_timer_start (EV_A_ &w->timer); 3515 ev_timer_again (EV_A_ &w->timer);
3516 ev_unref (EV_A);
3517 }
2585 3518
2586 ev_start (EV_A_ (W)w, 1); 3519 ev_start (EV_A_ (W)w, 1);
2587 3520
2588 EV_FREQUENT_CHECK; 3521 EV_FREQUENT_CHECK;
2589} 3522}
… …
2598 EV_FREQUENT_CHECK; 3531 EV_FREQUENT_CHECK;
2599 3532
2600#if EV_USE_INOTIFY 3533#if EV_USE_INOTIFY
2601 infy_del (EV_A_ w); 3534 infy_del (EV_A_ w);
2602#endif 3535#endif
3536
3537 if (ev_is_active (&w->timer))
3538 {
3539 ev_ref (EV_A);
2603 ev_timer_stop (EV_A_ &w->timer); 3540 ev_timer_stop (EV_A_ &w->timer);
3541 }
2604 3542
2605 ev_stop (EV_A_ (W)w); 3543 ev_stop (EV_A_ (W)w);
2606 3544
2607 EV_FREQUENT_CHECK; 3545 EV_FREQUENT_CHECK;
2608} 3546}
… …
2653 3591
2654 EV_FREQUENT_CHECK; 3592 EV_FREQUENT_CHECK;
2655} 3593}
2656#endif 3594#endif
2657 3595
3596#if EV_PREPARE_ENABLE
2658void 3597void
2659ev_prepare_start (EV_P_ ev_prepare *w) 3598ev_prepare_start (EV_P_ ev_prepare *w)
2660{ 3599{
2661 if (expect_false (ev_is_active (w))) 3600 if (expect_false (ev_is_active (w)))
2662 return; 3601 return;
… …
2688 3627
2689 ev_stop (EV_A_ (W)w); 3628 ev_stop (EV_A_ (W)w);
2690 3629
2691 EV_FREQUENT_CHECK; 3630 EV_FREQUENT_CHECK;
2692} 3631}
3632#endif
2693 3633
3634#if EV_CHECK_ENABLE
2694void 3635void
2695ev_check_start (EV_P_ ev_check *w) 3636ev_check_start (EV_P_ ev_check *w)
2696{ 3637{
2697 if (expect_false (ev_is_active (w))) 3638 if (expect_false (ev_is_active (w)))
2698 return; 3639 return;
… …
2724 3665
2725 ev_stop (EV_A_ (W)w); 3666 ev_stop (EV_A_ (W)w);
2726 3667
2727 EV_FREQUENT_CHECK; 3668 EV_FREQUENT_CHECK;
2728} 3669}
3670#endif
2729 3671
2730#if EV_EMBED_ENABLE 3672#if EV_EMBED_ENABLE
2731void noinline 3673void noinline
2732ev_embed_sweep (EV_P_ ev_embed *w) 3674ev_embed_sweep (EV_P_ ev_embed *w)
2733{ 3675{
2734 ev_loop (w->other, EVLOOP_NONBLOCK); 3676 ev_run (w->other, EVRUN_NOWAIT);
2735} 3677}
2736 3678
2737static void 3679static void
2738embed_io_cb (EV_P_ ev_io *io, int revents) 3680embed_io_cb (EV_P_ ev_io *io, int revents)
2739{ 3681{
2740 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3682 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2741 3683
2742 if (ev_cb (w)) 3684 if (ev_cb (w))
2743 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3685 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2744 else 3686 else
2745 ev_loop (w->other, EVLOOP_NONBLOCK); 3687 ev_run (w->other, EVRUN_NOWAIT);
2746} 3688}
2747 3689
2748static void 3690static void
2749embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3691embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2750{ 3692{
2751 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3693 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2752 3694
2753 { 3695 {
2754 struct ev_loop *loop = w->other; 3696 EV_P = w->other;
2755 3697
2756 while (fdchangecnt) 3698 while (fdchangecnt)
2757 { 3699 {
2758 fd_reify (EV_A); 3700 fd_reify (EV_A);
2759 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3701 ev_run (EV_A_ EVRUN_NOWAIT);
2760 } 3702 }
2761 } 3703 }
3704}
3705
3706static void
3707embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3708{
3709 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3710
3711 ev_embed_stop (EV_A_ w);
3712
3713 {
3714 EV_P = w->other;
3715
3716 ev_loop_fork (EV_A);
3717 ev_run (EV_A_ EVRUN_NOWAIT);
3718 }
3719
3720 ev_embed_start (EV_A_ w);
2762} 3721}
2763 3722
2764#if 0 3723#if 0
2765static void 3724static void
2766embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3725embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2774{ 3733{
2775 if (expect_false (ev_is_active (w))) 3734 if (expect_false (ev_is_active (w)))
2776 return; 3735 return;
2777 3736
2778 { 3737 {
2779 struct ev_loop *loop = w->other; 3738 EV_P = w->other;
2780 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3739 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); 3740 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2782 } 3741 }
2783 3742
2784 EV_FREQUENT_CHECK; 3743 EV_FREQUENT_CHECK;
2785 3744
… …
2788 3747
2789 ev_prepare_init (&w->prepare, embed_prepare_cb); 3748 ev_prepare_init (&w->prepare, embed_prepare_cb);
2790 ev_set_priority (&w->prepare, EV_MINPRI); 3749 ev_set_priority (&w->prepare, EV_MINPRI);
2791 ev_prepare_start (EV_A_ &w->prepare); 3750 ev_prepare_start (EV_A_ &w->prepare);
2792 3751
3752 ev_fork_init (&w->fork, embed_fork_cb);
3753 ev_fork_start (EV_A_ &w->fork);
3754
2793 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3755 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2794 3756
2795 ev_start (EV_A_ (W)w, 1); 3757 ev_start (EV_A_ (W)w, 1);
2796 3758
2797 EV_FREQUENT_CHECK; 3759 EV_FREQUENT_CHECK;
… …
2804 if (expect_false (!ev_is_active (w))) 3766 if (expect_false (!ev_is_active (w)))
2805 return; 3767 return;
2806 3768
2807 EV_FREQUENT_CHECK; 3769 EV_FREQUENT_CHECK;
2808 3770
2809 ev_io_stop (EV_A_ &w->io); 3771 ev_io_stop (EV_A_ &w->io);
2810 ev_prepare_stop (EV_A_ &w->prepare); 3772 ev_prepare_stop (EV_A_ &w->prepare);
3773 ev_fork_stop (EV_A_ &w->fork);
2811 3774
2812 ev_stop (EV_A_ (W)w); 3775 ev_stop (EV_A_ (W)w);
2813 3776
2814 EV_FREQUENT_CHECK; 3777 EV_FREQUENT_CHECK;
2815} 3778}
… …
2851 3814
2852 EV_FREQUENT_CHECK; 3815 EV_FREQUENT_CHECK;
2853} 3816}
2854#endif 3817#endif
2855 3818
3819#if EV_CLEANUP_ENABLE
3820void
3821ev_cleanup_start (EV_P_ ev_cleanup *w)
3822{
3823 if (expect_false (ev_is_active (w)))
3824 return;
3825
3826 EV_FREQUENT_CHECK;
3827
3828 ev_start (EV_A_ (W)w, ++cleanupcnt);
3829 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3830 cleanups [cleanupcnt - 1] = w;
3831
3832 /* cleanup watchers should never keep a refcount on the loop */
3833 ev_unref (EV_A);
3834 EV_FREQUENT_CHECK;
3835}
3836
3837void
3838ev_cleanup_stop (EV_P_ ev_cleanup *w)
3839{
3840 clear_pending (EV_A_ (W)w);
3841 if (expect_false (!ev_is_active (w)))
3842 return;
3843
3844 EV_FREQUENT_CHECK;
3845 ev_ref (EV_A);
3846
3847 {
3848 int active = ev_active (w);
3849
3850 cleanups [active - 1] = cleanups [--cleanupcnt];
3851 ev_active (cleanups [active - 1]) = active;
3852 }
3853
3854 ev_stop (EV_A_ (W)w);
3855
3856 EV_FREQUENT_CHECK;
3857}
3858#endif
3859
2856#if EV_ASYNC_ENABLE 3860#if EV_ASYNC_ENABLE
2857void 3861void
2858ev_async_start (EV_P_ ev_async *w) 3862ev_async_start (EV_P_ ev_async *w)
2859{ 3863{
2860 if (expect_false (ev_is_active (w))) 3864 if (expect_false (ev_is_active (w)))
2861 return; 3865 return;
2862 3866
3867 w->sent = 0;
3868
2863 evpipe_init (EV_A); 3869 evpipe_init (EV_A);
2864 3870
2865 EV_FREQUENT_CHECK; 3871 EV_FREQUENT_CHECK;
2866 3872
2867 ev_start (EV_A_ (W)w, ++asynccnt); 3873 ev_start (EV_A_ (W)w, ++asynccnt);
… …
2894 3900
2895void 3901void
2896ev_async_send (EV_P_ ev_async *w) 3902ev_async_send (EV_P_ ev_async *w)
2897{ 3903{
2898 w->sent = 1; 3904 w->sent = 1;
2899 evpipe_write (EV_A_ &gotasync); 3905 evpipe_write (EV_A_ &async_pending);
2900} 3906}
2901#endif 3907#endif
2902 3908
2903/*****************************************************************************/ 3909/*****************************************************************************/
2904 3910
… …
2914once_cb (EV_P_ struct ev_once *once, int revents) 3920once_cb (EV_P_ struct ev_once *once, int revents)
2915{ 3921{
2916 void (*cb)(int revents, void *arg) = once->cb; 3922 void (*cb)(int revents, void *arg) = once->cb;
2917 void *arg = once->arg; 3923 void *arg = once->arg;
2918 3924
2919 ev_io_stop (EV_A_ &once->io); 3925 ev_io_stop (EV_A_ &once->io);
2920 ev_timer_stop (EV_A_ &once->to); 3926 ev_timer_stop (EV_A_ &once->to);
2921 ev_free (once); 3927 ev_free (once);
2922 3928
2923 cb (revents, arg); 3929 cb (revents, arg);
2924} 3930}
2925 3931
2926static void 3932static void
2927once_cb_io (EV_P_ ev_io *w, int revents) 3933once_cb_io (EV_P_ ev_io *w, int revents)
2928{ 3934{
2929 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3935 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3936
3937 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2930} 3938}
2931 3939
2932static void 3940static void
2933once_cb_to (EV_P_ ev_timer *w, int revents) 3941once_cb_to (EV_P_ ev_timer *w, int revents)
2934{ 3942{
2935 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3943 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3944
3945 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2936} 3946}
2937 3947
2938void 3948void
2939ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3949ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2940{ 3950{
2941 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3951 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2942 3952
2943 if (expect_false (!once)) 3953 if (expect_false (!once))
2944 { 3954 {
2945 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3955 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2946 return; 3956 return;
2947 } 3957 }
2948 3958
2949 once->cb = cb; 3959 once->cb = cb;
2950 once->arg = arg; 3960 once->arg = arg;
… …
2962 ev_timer_set (&once->to, timeout, 0.); 3972 ev_timer_set (&once->to, timeout, 0.);
2963 ev_timer_start (EV_A_ &once->to); 3973 ev_timer_start (EV_A_ &once->to);
2964 } 3974 }
2965} 3975}
2966 3976
3977/*****************************************************************************/
3978
3979#if EV_WALK_ENABLE
3980void ecb_cold
3981ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3982{
3983 int i, j;
3984 ev_watcher_list *wl, *wn;
3985
3986 if (types & (EV_IO | EV_EMBED))
3987 for (i = 0; i < anfdmax; ++i)
3988 for (wl = anfds [i].head; wl; )
3989 {
3990 wn = wl->next;
3991
3992#if EV_EMBED_ENABLE
3993 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3994 {
3995 if (types & EV_EMBED)
3996 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3997 }
3998 else
3999#endif
4000#if EV_USE_INOTIFY
4001 if (ev_cb ((ev_io *)wl) == infy_cb)
4002 ;
4003 else
4004#endif
4005 if ((ev_io *)wl != &pipe_w)
4006 if (types & EV_IO)
4007 cb (EV_A_ EV_IO, wl);
4008
4009 wl = wn;
4010 }
4011
4012 if (types & (EV_TIMER | EV_STAT))
4013 for (i = timercnt + HEAP0; i-- > HEAP0; )
4014#if EV_STAT_ENABLE
4015 /*TODO: timer is not always active*/
4016 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
4017 {
4018 if (types & EV_STAT)
4019 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
4020 }
4021 else
4022#endif
4023 if (types & EV_TIMER)
4024 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
4025
4026#if EV_PERIODIC_ENABLE
4027 if (types & EV_PERIODIC)
4028 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4029 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4030#endif
4031
4032#if EV_IDLE_ENABLE
4033 if (types & EV_IDLE)
4034 for (j = NUMPRI; i--; )
4035 for (i = idlecnt [j]; i--; )
4036 cb (EV_A_ EV_IDLE, idles [j][i]);
4037#endif
4038
4039#if EV_FORK_ENABLE
4040 if (types & EV_FORK)
4041 for (i = forkcnt; i--; )
4042 if (ev_cb (forks [i]) != embed_fork_cb)
4043 cb (EV_A_ EV_FORK, forks [i]);
4044#endif
4045
4046#if EV_ASYNC_ENABLE
4047 if (types & EV_ASYNC)
4048 for (i = asynccnt; i--; )
4049 cb (EV_A_ EV_ASYNC, asyncs [i]);
4050#endif
4051
4052#if EV_PREPARE_ENABLE
4053 if (types & EV_PREPARE)
4054 for (i = preparecnt; i--; )
4055# if EV_EMBED_ENABLE
4056 if (ev_cb (prepares [i]) != embed_prepare_cb)
4057# endif
4058 cb (EV_A_ EV_PREPARE, prepares [i]);
4059#endif
4060
4061#if EV_CHECK_ENABLE
4062 if (types & EV_CHECK)
4063 for (i = checkcnt; i--; )
4064 cb (EV_A_ EV_CHECK, checks [i]);
4065#endif
4066
4067#if EV_SIGNAL_ENABLE
4068 if (types & EV_SIGNAL)
4069 for (i = 0; i < EV_NSIG - 1; ++i)
4070 for (wl = signals [i].head; wl; )
4071 {
4072 wn = wl->next;
4073 cb (EV_A_ EV_SIGNAL, wl);
4074 wl = wn;
4075 }
4076#endif
4077
4078#if EV_CHILD_ENABLE
4079 if (types & EV_CHILD)
4080 for (i = (EV_PID_HASHSIZE); i--; )
4081 for (wl = childs [i]; wl; )
4082 {
4083 wn = wl->next;
4084 cb (EV_A_ EV_CHILD, wl);
4085 wl = wn;
4086 }
4087#endif
4088/* EV_STAT 0x00001000 /* stat data changed */
4089/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4090}
4091#endif
4092
2967#if EV_MULTIPLICITY 4093#if EV_MULTIPLICITY
2968 #include "ev_wrap.h" 4094 #include "ev_wrap.h"
2969#endif 4095#endif
2970 4096
2971#ifdef __cplusplus 4097EV_CPP(})
2972}
2973#endif
2974 4098

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