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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 1.381 by root, Mon Jun 27 21:29:35 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
51 47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
53
54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME
58# define EV_USE_REALTIME 0
59# endif
60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1
62# endif
63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL)
65# define EV_USE_CLOCK_SYSCALL 0
66# endif
67
52# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
55# endif 71# endif
56# ifndef EV_USE_REALTIME 72# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 73# define EV_USE_REALTIME 0
58# endif 74# endif
59# else 75# else
60# ifndef EV_USE_MONOTONIC 76# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 77# define EV_USE_MONOTONIC 0
62# endif 78# endif
63# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
65# endif 81# endif
66# endif 82# endif
67 83
84# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
71# else 88# else
89# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
74# endif 100# endif
75 101
102# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 105# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 106# else
107# undef EV_USE_POLL
88# define EV_USE_POLL 0 108# define EV_USE_POLL 0
89# endif
90# endif 109# endif
91 110
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
95# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
98# endif 118# endif
99 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
106# endif 127# endif
107 128
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
111# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
114# endif 136# endif
115 137
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
122# endif 145# endif
123 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
154# endif
155
156# if HAVE_EVENTFD
157# ifndef EV_USE_EVENTFD
158# define EV_USE_EVENTFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
130# endif 163# endif
131 164
132#endif 165#endif
133 166
134#include <math.h>
135#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
136#include <fcntl.h> 169#include <fcntl.h>
137#include <stddef.h> 170#include <stddef.h>
138 171
139#include <stdio.h> 172#include <stdio.h>
140 173
141#include <assert.h> 174#include <assert.h>
142#include <errno.h> 175#include <errno.h>
143#include <sys/types.h> 176#include <sys/types.h>
144#include <time.h> 177#include <time.h>
178#include <limits.h>
145 179
146#include <signal.h> 180#include <signal.h>
147 181
148#ifdef EV_H 182#ifdef EV_H
149# include EV_H 183# include EV_H
150#else 184#else
151# include "ev.h" 185# include "ev.h"
152#endif 186#endif
187
188EV_CPP(extern "C" {)
153 189
154#ifndef _WIN32 190#ifndef _WIN32
155# include <sys/time.h> 191# include <sys/time.h>
156# include <sys/wait.h> 192# include <sys/wait.h>
157# include <unistd.h> 193# include <unistd.h>
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
332#endif
333 496
497#if ECB_GCC_VERSION(3,1)
498 #define ecb_attribute(attrlist) __attribute__(attrlist)
499 #define ecb_is_constant(expr) __builtin_constant_p (expr)
500 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
501 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
502#else
503 #define ecb_attribute(attrlist)
504 #define ecb_is_constant(expr) 0
505 #define ecb_expect(expr,value) (expr)
506 #define ecb_prefetch(addr,rw,locality)
507#endif
508
509#define ecb_noinline ecb_attribute ((__noinline__))
510#define ecb_noreturn ecb_attribute ((__noreturn__))
511#define ecb_unused ecb_attribute ((__unused__))
512#define ecb_const ecb_attribute ((__const__))
513#define ecb_pure ecb_attribute ((__pure__))
514
515#if ECB_GCC_VERSION(4,3)
516 #define ecb_artificial ecb_attribute ((__artificial__))
517 #define ecb_hot ecb_attribute ((__hot__))
518 #define ecb_cold ecb_attribute ((__cold__))
519#else
520 #define ecb_artificial
521 #define ecb_hot
522 #define ecb_cold
523#endif
524
525/* put around conditional expressions if you are very sure that the */
526/* expression is mostly true or mostly false. note that these return */
527/* booleans, not the expression. */
334#define expect_false(expr) expect ((expr) != 0, 0) 528#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
335#define expect_true(expr) expect ((expr) != 0, 1) 529#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
530/* ecb.h end */
531
532#define expect_false(cond) ecb_expect_false (cond)
533#define expect_true(cond) ecb_expect_true (cond)
534#define noinline ecb_noinline
535
336#define inline_size static inline 536#define inline_size ecb_inline
337 537
338#if EV_MINIMAL 538#if EV_FEATURE_CODE
539# define inline_speed ecb_inline
540#else
339# define inline_speed static noinline 541# define inline_speed static noinline
542#endif
543
544#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
545
546#if EV_MINPRI == EV_MAXPRI
547# define ABSPRI(w) (((W)w), 0)
340#else 548#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) 549# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
550#endif
346 551
347#define EMPTY /* required for microsofts broken pseudo-c compiler */ 552#define EMPTY /* required for microsofts broken pseudo-c compiler */
348#define EMPTY2(a,b) /* used to suppress some warnings */ 553#define EMPTY2(a,b) /* used to suppress some warnings */
349 554
350typedef ev_watcher *W; 555typedef ev_watcher *W;
… …
352typedef ev_watcher_time *WT; 557typedef ev_watcher_time *WT;
353 558
354#define ev_active(w) ((W)(w))->active 559#define ev_active(w) ((W)(w))->active
355#define ev_at(w) ((WT)(w))->at 560#define ev_at(w) ((WT)(w))->at
356 561
562#if EV_USE_REALTIME
563/* sig_atomic_t is used to avoid per-thread variables or locking but still */
564/* giving it a reasonably high chance of working on typical architectures */
565static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
566#endif
567
357#if EV_USE_MONOTONIC 568#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? */ 569static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
570#endif
571
572#ifndef EV_FD_TO_WIN32_HANDLE
573# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
574#endif
575#ifndef EV_WIN32_HANDLE_TO_FD
576# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
577#endif
578#ifndef EV_WIN32_CLOSE_FD
579# define EV_WIN32_CLOSE_FD(fd) close (fd)
361#endif 580#endif
362 581
363#ifdef _WIN32 582#ifdef _WIN32
364# include "ev_win32.c" 583# include "ev_win32.c"
365#endif 584#endif
366 585
367/*****************************************************************************/ 586/*****************************************************************************/
368 587
588/* define a suitable floor function (only used by periodics atm) */
589
590#if EV_USE_FLOOR
591# include <math.h>
592# define ev_floor(v) floor (v)
593#else
594
595#include <float.h>
596
597/* a floor() replacement function, should be independent of ev_tstamp type */
598static ev_tstamp noinline
599ev_floor (ev_tstamp v)
600{
601 /* the choice of shift factor is not terribly important */
602#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
603 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
604#else
605 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
606#endif
607
608 /* argument too large for an unsigned long? */
609 if (expect_false (v >= shift))
610 {
611 ev_tstamp f;
612
613 if (v == v - 1.)
614 return v; /* very large number */
615
616 f = shift * ev_floor (v * (1. / shift));
617 return f + ev_floor (v - f);
618 }
619
620 /* special treatment for negative args? */
621 if (expect_false (v < 0.))
622 {
623 ev_tstamp f = -ev_floor (-v);
624
625 return f - (f == v ? 0 : 1);
626 }
627
628 /* fits into an unsigned long */
629 return (unsigned long)v;
630}
631
632#endif
633
634/*****************************************************************************/
635
636#ifdef __linux
637# include <sys/utsname.h>
638#endif
639
640static unsigned int noinline ecb_cold
641ev_linux_version (void)
642{
643#ifdef __linux
644 unsigned int v = 0;
645 struct utsname buf;
646 int i;
647 char *p = buf.release;
648
649 if (uname (&buf))
650 return 0;
651
652 for (i = 3+1; --i; )
653 {
654 unsigned int c = 0;
655
656 for (;;)
657 {
658 if (*p >= '0' && *p <= '9')
659 c = c * 10 + *p++ - '0';
660 else
661 {
662 p += *p == '.';
663 break;
664 }
665 }
666
667 v = (v << 8) | c;
668 }
669
670 return v;
671#else
672 return 0;
673#endif
674}
675
676/*****************************************************************************/
677
678#if EV_AVOID_STDIO
679static void noinline ecb_cold
680ev_printerr (const char *msg)
681{
682 write (STDERR_FILENO, msg, strlen (msg));
683}
684#endif
685
369static void (*syserr_cb)(const char *msg); 686static void (*syserr_cb)(const char *msg);
370 687
371void 688void ecb_cold
372ev_set_syserr_cb (void (*cb)(const char *msg)) 689ev_set_syserr_cb (void (*cb)(const char *msg))
373{ 690{
374 syserr_cb = cb; 691 syserr_cb = cb;
375} 692}
376 693
377static void noinline 694static void noinline ecb_cold
378syserr (const char *msg) 695ev_syserr (const char *msg)
379{ 696{
380 if (!msg) 697 if (!msg)
381 msg = "(libev) system error"; 698 msg = "(libev) system error";
382 699
383 if (syserr_cb) 700 if (syserr_cb)
384 syserr_cb (msg); 701 syserr_cb (msg);
385 else 702 else
386 { 703 {
704#if EV_AVOID_STDIO
705 ev_printerr (msg);
706 ev_printerr (": ");
707 ev_printerr (strerror (errno));
708 ev_printerr ("\n");
709#else
387 perror (msg); 710 perror (msg);
711#endif
388 abort (); 712 abort ();
389 } 713 }
390} 714}
391 715
392static void * 716static void *
393ev_realloc_emul (void *ptr, long size) 717ev_realloc_emul (void *ptr, long size)
394{ 718{
719#if __GLIBC__
720 return realloc (ptr, size);
721#else
395 /* some systems, notably openbsd and darwin, fail to properly 722 /* some systems, notably openbsd and darwin, fail to properly
396 * implement realloc (x, 0) (as required by both ansi c-98 and 723 * implement realloc (x, 0) (as required by both ansi c-89 and
397 * the single unix specification, so work around them here. 724 * the single unix specification, so work around them here.
398 */ 725 */
399 726
400 if (size) 727 if (size)
401 return realloc (ptr, size); 728 return realloc (ptr, size);
402 729
403 free (ptr); 730 free (ptr);
404 return 0; 731 return 0;
732#endif
405} 733}
406 734
407static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 735static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
408 736
409void 737void ecb_cold
410ev_set_allocator (void *(*cb)(void *ptr, long size)) 738ev_set_allocator (void *(*cb)(void *ptr, long size))
411{ 739{
412 alloc = cb; 740 alloc = cb;
413} 741}
414 742
… …
417{ 745{
418 ptr = alloc (ptr, size); 746 ptr = alloc (ptr, size);
419 747
420 if (!ptr && size) 748 if (!ptr && size)
421 { 749 {
750#if EV_AVOID_STDIO
751 ev_printerr ("(libev) memory allocation failed, aborting.\n");
752#else
422 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 753 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
754#endif
423 abort (); 755 abort ();
424 } 756 }
425 757
426 return ptr; 758 return ptr;
427} 759}
… …
429#define ev_malloc(size) ev_realloc (0, (size)) 761#define ev_malloc(size) ev_realloc (0, (size))
430#define ev_free(ptr) ev_realloc ((ptr), 0) 762#define ev_free(ptr) ev_realloc ((ptr), 0)
431 763
432/*****************************************************************************/ 764/*****************************************************************************/
433 765
766/* set in reify when reification needed */
767#define EV_ANFD_REIFY 1
768
769/* file descriptor info structure */
434typedef struct 770typedef struct
435{ 771{
436 WL head; 772 WL head;
437 unsigned char events; 773 unsigned char events; /* the events watched for */
774 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
775 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
438 unsigned char reify; 776 unsigned char unused;
777#if EV_USE_EPOLL
778 unsigned int egen; /* generation counter to counter epoll bugs */
779#endif
439#if EV_SELECT_IS_WINSOCKET 780#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
440 SOCKET handle; 781 SOCKET handle;
441#endif 782#endif
783#if EV_USE_IOCP
784 OVERLAPPED or, ow;
785#endif
442} ANFD; 786} ANFD;
443 787
788/* stores the pending event set for a given watcher */
444typedef struct 789typedef struct
445{ 790{
446 W w; 791 W w;
447 int events; 792 int events; /* the pending event set for the given watcher */
448} ANPENDING; 793} ANPENDING;
449 794
450#if EV_USE_INOTIFY 795#if EV_USE_INOTIFY
451/* hash table entry per inotify-id */ 796/* hash table entry per inotify-id */
452typedef struct 797typedef struct
… …
455} ANFS; 800} ANFS;
456#endif 801#endif
457 802
458/* Heap Entry */ 803/* Heap Entry */
459#if EV_HEAP_CACHE_AT 804#if EV_HEAP_CACHE_AT
805 /* a heap element */
460 typedef struct { 806 typedef struct {
461 ev_tstamp at; 807 ev_tstamp at;
462 WT w; 808 WT w;
463 } ANHE; 809 } ANHE;
464 810
465 #define ANHE_w(he) (he).w /* access watcher, read-write */ 811 #define ANHE_w(he) (he).w /* access watcher, read-write */
466 #define ANHE_at(he) (he).at /* access cached at, read-only */ 812 #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 */ 813 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
468#else 814#else
815 /* a heap element */
469 typedef WT ANHE; 816 typedef WT ANHE;
470 817
471 #define ANHE_w(he) (he) 818 #define ANHE_w(he) (he)
472 #define ANHE_at(he) (he)->at 819 #define ANHE_at(he) (he)->at
473 #define ANHE_at_cache(he) 820 #define ANHE_at_cache(he)
… …
497 844
498 static int ev_default_loop_ptr; 845 static int ev_default_loop_ptr;
499 846
500#endif 847#endif
501 848
849#if EV_FEATURE_API
850# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
851# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
852# define EV_INVOKE_PENDING invoke_cb (EV_A)
853#else
854# define EV_RELEASE_CB (void)0
855# define EV_ACQUIRE_CB (void)0
856# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
857#endif
858
859#define EVBREAK_RECURSE 0x80
860
502/*****************************************************************************/ 861/*****************************************************************************/
503 862
863#ifndef EV_HAVE_EV_TIME
504ev_tstamp 864ev_tstamp
505ev_time (void) 865ev_time (void)
506{ 866{
507#if EV_USE_REALTIME 867#if EV_USE_REALTIME
868 if (expect_true (have_realtime))
869 {
508 struct timespec ts; 870 struct timespec ts;
509 clock_gettime (CLOCK_REALTIME, &ts); 871 clock_gettime (CLOCK_REALTIME, &ts);
510 return ts.tv_sec + ts.tv_nsec * 1e-9; 872 return ts.tv_sec + ts.tv_nsec * 1e-9;
511#else 873 }
874#endif
875
512 struct timeval tv; 876 struct timeval tv;
513 gettimeofday (&tv, 0); 877 gettimeofday (&tv, 0);
514 return tv.tv_sec + tv.tv_usec * 1e-6; 878 return tv.tv_sec + tv.tv_usec * 1e-6;
515#endif
516} 879}
880#endif
517 881
518ev_tstamp inline_size 882inline_size ev_tstamp
519get_clock (void) 883get_clock (void)
520{ 884{
521#if EV_USE_MONOTONIC 885#if EV_USE_MONOTONIC
522 if (expect_true (have_monotonic)) 886 if (expect_true (have_monotonic))
523 { 887 {
… …
544 if (delay > 0.) 908 if (delay > 0.)
545 { 909 {
546#if EV_USE_NANOSLEEP 910#if EV_USE_NANOSLEEP
547 struct timespec ts; 911 struct timespec ts;
548 912
549 ts.tv_sec = (time_t)delay; 913 EV_TS_SET (ts, delay);
550 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
551
552 nanosleep (&ts, 0); 914 nanosleep (&ts, 0);
553#elif defined(_WIN32) 915#elif defined(_WIN32)
554 Sleep ((unsigned long)(delay * 1e3)); 916 Sleep ((unsigned long)(delay * 1e3));
555#else 917#else
556 struct timeval tv; 918 struct timeval tv;
557 919
558 tv.tv_sec = (time_t)delay; 920 /* 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); 921 /* something not guaranteed by newer posix versions, but guaranteed */
560 922 /* by older ones */
923 EV_TV_SET (tv, delay);
561 select (0, 0, 0, 0, &tv); 924 select (0, 0, 0, 0, &tv);
562#endif 925#endif
563 } 926 }
564} 927}
565 928
566/*****************************************************************************/ 929/*****************************************************************************/
567 930
568#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 931#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
569 932
570int inline_size 933/* find a suitable new size for the given array, */
934/* hopefully by rounding to a nice-to-malloc size */
935inline_size int
571array_nextsize (int elem, int cur, int cnt) 936array_nextsize (int elem, int cur, int cnt)
572{ 937{
573 int ncur = cur + 1; 938 int ncur = cur + 1;
574 939
575 do 940 do
… …
586 } 951 }
587 952
588 return ncur; 953 return ncur;
589} 954}
590 955
591static noinline void * 956static void * noinline ecb_cold
592array_realloc (int elem, void *base, int *cur, int cnt) 957array_realloc (int elem, void *base, int *cur, int cnt)
593{ 958{
594 *cur = array_nextsize (elem, *cur, cnt); 959 *cur = array_nextsize (elem, *cur, cnt);
595 return ev_realloc (base, elem * *cur); 960 return ev_realloc (base, elem * *cur);
596} 961}
962
963#define array_init_zero(base,count) \
964 memset ((void *)(base), 0, sizeof (*(base)) * (count))
597 965
598#define array_needsize(type,base,cur,cnt,init) \ 966#define array_needsize(type,base,cur,cnt,init) \
599 if (expect_false ((cnt) > (cur))) \ 967 if (expect_false ((cnt) > (cur))) \
600 { \ 968 { \
601 int ocur_ = (cur); \ 969 int ocur_ = (cur); \
… …
613 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 981 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
614 } 982 }
615#endif 983#endif
616 984
617#define array_free(stem, idx) \ 985#define array_free(stem, idx) \
618 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 986 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
619 987
620/*****************************************************************************/ 988/*****************************************************************************/
989
990/* dummy callback for pending events */
991static void noinline
992pendingcb (EV_P_ ev_prepare *w, int revents)
993{
994}
621 995
622void noinline 996void noinline
623ev_feed_event (EV_P_ void *w, int revents) 997ev_feed_event (EV_P_ void *w, int revents)
624{ 998{
625 W w_ = (W)w; 999 W w_ = (W)w;
… …
634 pendings [pri][w_->pending - 1].w = w_; 1008 pendings [pri][w_->pending - 1].w = w_;
635 pendings [pri][w_->pending - 1].events = revents; 1009 pendings [pri][w_->pending - 1].events = revents;
636 } 1010 }
637} 1011}
638 1012
639void inline_speed 1013inline_speed void
1014feed_reverse (EV_P_ W w)
1015{
1016 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1017 rfeeds [rfeedcnt++] = w;
1018}
1019
1020inline_size void
1021feed_reverse_done (EV_P_ int revents)
1022{
1023 do
1024 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1025 while (rfeedcnt);
1026}
1027
1028inline_speed void
640queue_events (EV_P_ W *events, int eventcnt, int type) 1029queue_events (EV_P_ W *events, int eventcnt, int type)
641{ 1030{
642 int i; 1031 int i;
643 1032
644 for (i = 0; i < eventcnt; ++i) 1033 for (i = 0; i < eventcnt; ++i)
645 ev_feed_event (EV_A_ events [i], type); 1034 ev_feed_event (EV_A_ events [i], type);
646} 1035}
647 1036
648/*****************************************************************************/ 1037/*****************************************************************************/
649 1038
650void inline_size 1039inline_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) 1040fd_event_nocheck (EV_P_ int fd, int revents)
665{ 1041{
666 ANFD *anfd = anfds + fd; 1042 ANFD *anfd = anfds + fd;
667 ev_io *w; 1043 ev_io *w;
668 1044
669 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1045 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
673 if (ev) 1049 if (ev)
674 ev_feed_event (EV_A_ (W)w, ev); 1050 ev_feed_event (EV_A_ (W)w, ev);
675 } 1051 }
676} 1052}
677 1053
1054/* do not submit kernel events for fds that have reify set */
1055/* because that means they changed while we were polling for new events */
1056inline_speed void
1057fd_event (EV_P_ int fd, int revents)
1058{
1059 ANFD *anfd = anfds + fd;
1060
1061 if (expect_true (!anfd->reify))
1062 fd_event_nocheck (EV_A_ fd, revents);
1063}
1064
678void 1065void
679ev_feed_fd_event (EV_P_ int fd, int revents) 1066ev_feed_fd_event (EV_P_ int fd, int revents)
680{ 1067{
681 if (fd >= 0 && fd < anfdmax) 1068 if (fd >= 0 && fd < anfdmax)
682 fd_event (EV_A_ fd, revents); 1069 fd_event_nocheck (EV_A_ fd, revents);
683} 1070}
684 1071
685void inline_size 1072/* make sure the external fd watch events are in-sync */
1073/* with the kernel/libev internal state */
1074inline_size void
686fd_reify (EV_P) 1075fd_reify (EV_P)
687{ 1076{
688 int i; 1077 int i;
1078
1079#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1080 for (i = 0; i < fdchangecnt; ++i)
1081 {
1082 int fd = fdchanges [i];
1083 ANFD *anfd = anfds + fd;
1084
1085 if (anfd->reify & EV__IOFDSET && anfd->head)
1086 {
1087 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1088
1089 if (handle != anfd->handle)
1090 {
1091 unsigned long arg;
1092
1093 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1094
1095 /* handle changed, but fd didn't - we need to do it in two steps */
1096 backend_modify (EV_A_ fd, anfd->events, 0);
1097 anfd->events = 0;
1098 anfd->handle = handle;
1099 }
1100 }
1101 }
1102#endif
689 1103
690 for (i = 0; i < fdchangecnt; ++i) 1104 for (i = 0; i < fdchangecnt; ++i)
691 { 1105 {
692 int fd = fdchanges [i]; 1106 int fd = fdchanges [i];
693 ANFD *anfd = anfds + fd; 1107 ANFD *anfd = anfds + fd;
694 ev_io *w; 1108 ev_io *w;
695 1109
696 unsigned char events = 0; 1110 unsigned char o_events = anfd->events;
1111 unsigned char o_reify = anfd->reify;
697 1112
698 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1113 anfd->reify = 0;
699 events |= (unsigned char)w->events;
700 1114
701#if EV_SELECT_IS_WINSOCKET 1115 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
702 if (events)
703 { 1116 {
704 unsigned long argp; 1117 anfd->events = 0;
705 #ifdef EV_FD_TO_WIN32_HANDLE 1118
706 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1119 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
707 #else 1120 anfd->events |= (unsigned char)w->events;
708 anfd->handle = _get_osfhandle (fd); 1121
709 #endif 1122 if (o_events != anfd->events)
710 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 1123 o_reify = EV__IOFDSET; /* actually |= */
711 } 1124 }
712#endif
713 1125
714 { 1126 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); 1127 backend_modify (EV_A_ fd, o_events, anfd->events);
723 }
724 } 1128 }
725 1129
726 fdchangecnt = 0; 1130 fdchangecnt = 0;
727} 1131}
728 1132
729void inline_size 1133/* something about the given fd changed */
1134inline_size void
730fd_change (EV_P_ int fd, int flags) 1135fd_change (EV_P_ int fd, int flags)
731{ 1136{
732 unsigned char reify = anfds [fd].reify; 1137 unsigned char reify = anfds [fd].reify;
733 anfds [fd].reify |= flags; 1138 anfds [fd].reify |= flags;
734 1139
… …
738 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1143 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
739 fdchanges [fdchangecnt - 1] = fd; 1144 fdchanges [fdchangecnt - 1] = fd;
740 } 1145 }
741} 1146}
742 1147
743void inline_speed 1148/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1149inline_speed void ecb_cold
744fd_kill (EV_P_ int fd) 1150fd_kill (EV_P_ int fd)
745{ 1151{
746 ev_io *w; 1152 ev_io *w;
747 1153
748 while ((w = (ev_io *)anfds [fd].head)) 1154 while ((w = (ev_io *)anfds [fd].head))
… …
750 ev_io_stop (EV_A_ w); 1156 ev_io_stop (EV_A_ w);
751 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1157 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
752 } 1158 }
753} 1159}
754 1160
755int inline_size 1161/* check whether the given fd is actually valid, for error recovery */
1162inline_size int ecb_cold
756fd_valid (int fd) 1163fd_valid (int fd)
757{ 1164{
758#ifdef _WIN32 1165#ifdef _WIN32
759 return _get_osfhandle (fd) != -1; 1166 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
760#else 1167#else
761 return fcntl (fd, F_GETFD) != -1; 1168 return fcntl (fd, F_GETFD) != -1;
762#endif 1169#endif
763} 1170}
764 1171
765/* called on EBADF to verify fds */ 1172/* called on EBADF to verify fds */
766static void noinline 1173static void noinline ecb_cold
767fd_ebadf (EV_P) 1174fd_ebadf (EV_P)
768{ 1175{
769 int fd; 1176 int fd;
770 1177
771 for (fd = 0; fd < anfdmax; ++fd) 1178 for (fd = 0; fd < anfdmax; ++fd)
772 if (anfds [fd].events) 1179 if (anfds [fd].events)
773 if (!fd_valid (fd) == -1 && errno == EBADF) 1180 if (!fd_valid (fd) && errno == EBADF)
774 fd_kill (EV_A_ fd); 1181 fd_kill (EV_A_ fd);
775} 1182}
776 1183
777/* called on ENOMEM in select/poll to kill some fds and retry */ 1184/* called on ENOMEM in select/poll to kill some fds and retry */
778static void noinline 1185static void noinline ecb_cold
779fd_enomem (EV_P) 1186fd_enomem (EV_P)
780{ 1187{
781 int fd; 1188 int fd;
782 1189
783 for (fd = anfdmax; fd--; ) 1190 for (fd = anfdmax; fd--; )
784 if (anfds [fd].events) 1191 if (anfds [fd].events)
785 { 1192 {
786 fd_kill (EV_A_ fd); 1193 fd_kill (EV_A_ fd);
787 return; 1194 break;
788 } 1195 }
789} 1196}
790 1197
791/* usually called after fork if backend needs to re-arm all fds from scratch */ 1198/* usually called after fork if backend needs to re-arm all fds from scratch */
792static void noinline 1199static void noinline
… …
796 1203
797 for (fd = 0; fd < anfdmax; ++fd) 1204 for (fd = 0; fd < anfdmax; ++fd)
798 if (anfds [fd].events) 1205 if (anfds [fd].events)
799 { 1206 {
800 anfds [fd].events = 0; 1207 anfds [fd].events = 0;
1208 anfds [fd].emask = 0;
801 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1209 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
802 } 1210 }
803} 1211}
804 1212
1213/* used to prepare libev internal fd's */
1214/* this is not fork-safe */
1215inline_speed void
1216fd_intern (int fd)
1217{
1218#ifdef _WIN32
1219 unsigned long arg = 1;
1220 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1221#else
1222 fcntl (fd, F_SETFD, FD_CLOEXEC);
1223 fcntl (fd, F_SETFL, O_NONBLOCK);
1224#endif
1225}
1226
805/*****************************************************************************/ 1227/*****************************************************************************/
806 1228
807/* 1229/*
808 * the heap functions want a real array index. array index 0 uis guaranteed to not 1230 * 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 1231 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
810 * the branching factor of the d-tree. 1232 * the branching factor of the d-tree.
811 */ 1233 */
812 1234
813/* 1235/*
… …
822#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1244#define HEAP0 (DHEAP - 1) /* index of first element in heap */
823#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1245#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
824#define UPHEAP_DONE(p,k) ((p) == (k)) 1246#define UPHEAP_DONE(p,k) ((p) == (k))
825 1247
826/* away from the root */ 1248/* away from the root */
827void inline_speed 1249inline_speed void
828downheap (ANHE *heap, int N, int k) 1250downheap (ANHE *heap, int N, int k)
829{ 1251{
830 ANHE he = heap [k]; 1252 ANHE he = heap [k];
831 ANHE *E = heap + N + HEAP0; 1253 ANHE *E = heap + N + HEAP0;
832 1254
… …
872#define HEAP0 1 1294#define HEAP0 1
873#define HPARENT(k) ((k) >> 1) 1295#define HPARENT(k) ((k) >> 1)
874#define UPHEAP_DONE(p,k) (!(p)) 1296#define UPHEAP_DONE(p,k) (!(p))
875 1297
876/* away from the root */ 1298/* away from the root */
877void inline_speed 1299inline_speed void
878downheap (ANHE *heap, int N, int k) 1300downheap (ANHE *heap, int N, int k)
879{ 1301{
880 ANHE he = heap [k]; 1302 ANHE he = heap [k];
881 1303
882 for (;;) 1304 for (;;)
883 { 1305 {
884 int c = k << 1; 1306 int c = k << 1;
885 1307
886 if (c > N + HEAP0 - 1) 1308 if (c >= N + HEAP0)
887 break; 1309 break;
888 1310
889 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1311 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
890 ? 1 : 0; 1312 ? 1 : 0;
891 1313
… …
902 ev_active (ANHE_w (he)) = k; 1324 ev_active (ANHE_w (he)) = k;
903} 1325}
904#endif 1326#endif
905 1327
906/* towards the root */ 1328/* towards the root */
907void inline_speed 1329inline_speed void
908upheap (ANHE *heap, int k) 1330upheap (ANHE *heap, int k)
909{ 1331{
910 ANHE he = heap [k]; 1332 ANHE he = heap [k];
911 1333
912 for (;;) 1334 for (;;)
… …
923 1345
924 heap [k] = he; 1346 heap [k] = he;
925 ev_active (ANHE_w (he)) = k; 1347 ev_active (ANHE_w (he)) = k;
926} 1348}
927 1349
928void inline_size 1350/* move an element suitably so it is in a correct place */
1351inline_size void
929adjustheap (ANHE *heap, int N, int k) 1352adjustheap (ANHE *heap, int N, int k)
930{ 1353{
931 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1354 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
932 upheap (heap, k); 1355 upheap (heap, k);
933 else 1356 else
934 downheap (heap, N, k); 1357 downheap (heap, N, k);
935} 1358}
936 1359
937/* rebuild the heap: this function is used only once and executed rarely */ 1360/* rebuild the heap: this function is used only once and executed rarely */
938void inline_size 1361inline_size void
939reheap (ANHE *heap, int N) 1362reheap (ANHE *heap, int N)
940{ 1363{
941 int i; 1364 int i;
1365
942 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1366 /* 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 */ 1367 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
944 for (i = 0; i < N; ++i) 1368 for (i = 0; i < N; ++i)
945 upheap (heap, i + HEAP0); 1369 upheap (heap, i + HEAP0);
946} 1370}
947 1371
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/*****************************************************************************/ 1372/*****************************************************************************/
964 1373
1374/* associate signal watchers to a signal signal */
965typedef struct 1375typedef struct
966{ 1376{
1377 EV_ATOMIC_T pending;
1378#if EV_MULTIPLICITY
1379 EV_P;
1380#endif
967 WL head; 1381 WL head;
968 EV_ATOMIC_T gotsig;
969} ANSIG; 1382} ANSIG;
970 1383
971static ANSIG *signals; 1384static 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 1385
988/*****************************************************************************/ 1386/*****************************************************************************/
989 1387
990void inline_speed 1388#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 1389
1002static void noinline 1390static void noinline ecb_cold
1003evpipe_init (EV_P) 1391evpipe_init (EV_P)
1004{ 1392{
1005 if (!ev_is_active (&pipeev)) 1393 if (!ev_is_active (&pipe_w))
1006 { 1394 {
1007#if EV_USE_EVENTFD 1395# if EV_USE_EVENTFD
1396 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1397 if (evfd < 0 && errno == EINVAL)
1008 if ((evfd = eventfd (0, 0)) >= 0) 1398 evfd = eventfd (0, 0);
1399
1400 if (evfd >= 0)
1009 { 1401 {
1010 evpipe [0] = -1; 1402 evpipe [0] = -1;
1011 fd_intern (evfd); 1403 fd_intern (evfd); /* doing it twice doesn't hurt */
1012 ev_io_set (&pipeev, evfd, EV_READ); 1404 ev_io_set (&pipe_w, evfd, EV_READ);
1013 } 1405 }
1014 else 1406 else
1015#endif 1407# endif
1016 { 1408 {
1017 while (pipe (evpipe)) 1409 while (pipe (evpipe))
1018 syserr ("(libev) error creating signal/async pipe"); 1410 ev_syserr ("(libev) error creating signal/async pipe");
1019 1411
1020 fd_intern (evpipe [0]); 1412 fd_intern (evpipe [0]);
1021 fd_intern (evpipe [1]); 1413 fd_intern (evpipe [1]);
1022 ev_io_set (&pipeev, evpipe [0], EV_READ); 1414 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1023 } 1415 }
1024 1416
1025 ev_io_start (EV_A_ &pipeev); 1417 ev_io_start (EV_A_ &pipe_w);
1026 ev_unref (EV_A); /* watcher should not keep loop alive */ 1418 ev_unref (EV_A); /* watcher should not keep loop alive */
1027 } 1419 }
1028} 1420}
1029 1421
1030void inline_size 1422inline_speed void
1031evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1423evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1032{ 1424{
1033 if (!*flag) 1425 if (!*flag)
1034 { 1426 {
1035 int old_errno = errno; /* save errno because write might clobber it */
1036
1037 *flag = 1; 1427 *flag = 1;
1038 1428
1429 pipe_write_skipped = 1;
1430
1431 if (pipe_write_wanted)
1432 {
1433 int old_errno;
1434
1435 pipe_write_skipped = 0;
1436
1437 old_errno = errno; /* save errno because write will clobber it */
1438
1439#if EV_USE_EVENTFD
1440 if (evfd >= 0)
1441 {
1442 uint64_t counter = 1;
1443 write (evfd, &counter, sizeof (uint64_t));
1444 }
1445 else
1446#endif
1447 {
1448 /* win32 people keep sending patches that change this write() to send() */
1449 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1450 /* so when you think this write should be a send instead, please find out */
1451 /* where your send() is from - it's definitely not the microsoft send, and */
1452 /* tell me. thank you. */
1453 write (evpipe [1], &(evpipe [1]), 1);
1454 }
1455
1456 errno = old_errno;
1457 }
1458 }
1459}
1460
1461/* called whenever the libev signal pipe */
1462/* got some events (signal, async) */
1463static void
1464pipecb (EV_P_ ev_io *iow, int revents)
1465{
1466 int i;
1467
1468 if (revents & EV_READ)
1469 {
1039#if EV_USE_EVENTFD 1470#if EV_USE_EVENTFD
1040 if (evfd >= 0) 1471 if (evfd >= 0)
1041 { 1472 {
1042 uint64_t counter = 1; 1473 uint64_t counter;
1043 write (evfd, &counter, sizeof (uint64_t)); 1474 read (evfd, &counter, sizeof (uint64_t));
1044 } 1475 }
1045 else 1476 else
1046#endif 1477#endif
1047 write (evpipe [1], &old_errno, 1); 1478 {
1048
1049 errno = old_errno;
1050 }
1051}
1052
1053static void
1054pipecb (EV_P_ ev_io *iow, int revents)
1055{
1056#if EV_USE_EVENTFD
1057 if (evfd >= 0)
1058 {
1059 uint64_t counter;
1060 read (evfd, &counter, sizeof (uint64_t));
1061 }
1062 else
1063#endif
1064 {
1065 char dummy; 1479 char dummy;
1480 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1066 read (evpipe [0], &dummy, 1); 1481 read (evpipe [0], &dummy, 1);
1482 }
1483 }
1484
1485 pipe_write_skipped = 0;
1486
1487#if EV_SIGNAL_ENABLE
1488 if (sig_pending)
1067 } 1489 {
1490 sig_pending = 0;
1068 1491
1069 if (gotsig && ev_is_default_loop (EV_A)) 1492 for (i = EV_NSIG - 1; i--; )
1070 { 1493 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); 1494 ev_feed_signal_event (EV_A_ i + 1);
1077 } 1495 }
1496#endif
1078 1497
1079#if EV_ASYNC_ENABLE 1498#if EV_ASYNC_ENABLE
1080 if (gotasync) 1499 if (async_pending)
1081 { 1500 {
1082 int i; 1501 async_pending = 0;
1083 gotasync = 0;
1084 1502
1085 for (i = asynccnt; i--; ) 1503 for (i = asynccnt; i--; )
1086 if (asyncs [i]->sent) 1504 if (asyncs [i]->sent)
1087 { 1505 {
1088 asyncs [i]->sent = 0; 1506 asyncs [i]->sent = 0;
… …
1092#endif 1510#endif
1093} 1511}
1094 1512
1095/*****************************************************************************/ 1513/*****************************************************************************/
1096 1514
1515void
1516ev_feed_signal (int signum)
1517{
1518#if EV_MULTIPLICITY
1519 EV_P = signals [signum - 1].loop;
1520
1521 if (!EV_A)
1522 return;
1523#endif
1524
1525 if (!ev_active (&pipe_w))
1526 return;
1527
1528 signals [signum - 1].pending = 1;
1529 evpipe_write (EV_A_ &sig_pending);
1530}
1531
1097static void 1532static void
1098ev_sighandler (int signum) 1533ev_sighandler (int signum)
1099{ 1534{
1100#if EV_MULTIPLICITY
1101 struct ev_loop *loop = &default_loop_struct;
1102#endif
1103
1104#if _WIN32 1535#ifdef _WIN32
1105 signal (signum, ev_sighandler); 1536 signal (signum, ev_sighandler);
1106#endif 1537#endif
1107 1538
1108 signals [signum - 1].gotsig = 1; 1539 ev_feed_signal (signum);
1109 evpipe_write (EV_A_ &gotsig);
1110} 1540}
1111 1541
1112void noinline 1542void noinline
1113ev_feed_signal_event (EV_P_ int signum) 1543ev_feed_signal_event (EV_P_ int signum)
1114{ 1544{
1115 WL w; 1545 WL w;
1116 1546
1547 if (expect_false (signum <= 0 || signum > EV_NSIG))
1548 return;
1549
1550 --signum;
1551
1117#if EV_MULTIPLICITY 1552#if EV_MULTIPLICITY
1118 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1553 /* it is permissible to try to feed a signal to the wrong loop */
1119#endif 1554 /* or, likely more useful, feeding a signal nobody is waiting for */
1120 1555
1121 --signum; 1556 if (expect_false (signals [signum].loop != EV_A))
1122
1123 if (signum < 0 || signum >= signalmax)
1124 return; 1557 return;
1558#endif
1125 1559
1126 signals [signum].gotsig = 0; 1560 signals [signum].pending = 0;
1127 1561
1128 for (w = signals [signum].head; w; w = w->next) 1562 for (w = signals [signum].head; w; w = w->next)
1129 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1563 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1130} 1564}
1131 1565
1566#if EV_USE_SIGNALFD
1567static void
1568sigfdcb (EV_P_ ev_io *iow, int revents)
1569{
1570 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1571
1572 for (;;)
1573 {
1574 ssize_t res = read (sigfd, si, sizeof (si));
1575
1576 /* not ISO-C, as res might be -1, but works with SuS */
1577 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1578 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1579
1580 if (res < (ssize_t)sizeof (si))
1581 break;
1582 }
1583}
1584#endif
1585
1586#endif
1587
1132/*****************************************************************************/ 1588/*****************************************************************************/
1133 1589
1590#if EV_CHILD_ENABLE
1134static WL childs [EV_PID_HASHSIZE]; 1591static WL childs [EV_PID_HASHSIZE];
1135
1136#ifndef _WIN32
1137 1592
1138static ev_signal childev; 1593static ev_signal childev;
1139 1594
1140#ifndef WIFCONTINUED 1595#ifndef WIFCONTINUED
1141# define WIFCONTINUED(status) 0 1596# define WIFCONTINUED(status) 0
1142#endif 1597#endif
1143 1598
1144void inline_speed 1599/* handle a single child status event */
1600inline_speed void
1145child_reap (EV_P_ int chain, int pid, int status) 1601child_reap (EV_P_ int chain, int pid, int status)
1146{ 1602{
1147 ev_child *w; 1603 ev_child *w;
1148 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1604 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1149 1605
1150 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1606 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1151 { 1607 {
1152 if ((w->pid == pid || !w->pid) 1608 if ((w->pid == pid || !w->pid)
1153 && (!traced || (w->flags & 1))) 1609 && (!traced || (w->flags & 1)))
1154 { 1610 {
1155 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1611 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1162 1618
1163#ifndef WCONTINUED 1619#ifndef WCONTINUED
1164# define WCONTINUED 0 1620# define WCONTINUED 0
1165#endif 1621#endif
1166 1622
1623/* called on sigchld etc., calls waitpid */
1167static void 1624static void
1168childcb (EV_P_ ev_signal *sw, int revents) 1625childcb (EV_P_ ev_signal *sw, int revents)
1169{ 1626{
1170 int pid, status; 1627 int pid, status;
1171 1628
… …
1179 /* make sure we are called again until all children have been reaped */ 1636 /* 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 */ 1637 /* 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); 1638 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1182 1639
1183 child_reap (EV_A_ pid, pid, status); 1640 child_reap (EV_A_ pid, pid, status);
1184 if (EV_PID_HASHSIZE > 1) 1641 if ((EV_PID_HASHSIZE) > 1)
1185 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1642 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1186} 1643}
1187 1644
1188#endif 1645#endif
1189 1646
1190/*****************************************************************************/ 1647/*****************************************************************************/
1191 1648
1649#if EV_USE_IOCP
1650# include "ev_iocp.c"
1651#endif
1192#if EV_USE_PORT 1652#if EV_USE_PORT
1193# include "ev_port.c" 1653# include "ev_port.c"
1194#endif 1654#endif
1195#if EV_USE_KQUEUE 1655#if EV_USE_KQUEUE
1196# include "ev_kqueue.c" 1656# include "ev_kqueue.c"
… …
1203#endif 1663#endif
1204#if EV_USE_SELECT 1664#if EV_USE_SELECT
1205# include "ev_select.c" 1665# include "ev_select.c"
1206#endif 1666#endif
1207 1667
1208int 1668int ecb_cold
1209ev_version_major (void) 1669ev_version_major (void)
1210{ 1670{
1211 return EV_VERSION_MAJOR; 1671 return EV_VERSION_MAJOR;
1212} 1672}
1213 1673
1214int 1674int ecb_cold
1215ev_version_minor (void) 1675ev_version_minor (void)
1216{ 1676{
1217 return EV_VERSION_MINOR; 1677 return EV_VERSION_MINOR;
1218} 1678}
1219 1679
1220/* return true if we are running with elevated privileges and should ignore env variables */ 1680/* return true if we are running with elevated privileges and should ignore env variables */
1221int inline_size 1681int inline_size ecb_cold
1222enable_secure (void) 1682enable_secure (void)
1223{ 1683{
1224#ifdef _WIN32 1684#ifdef _WIN32
1225 return 0; 1685 return 0;
1226#else 1686#else
1227 return getuid () != geteuid () 1687 return getuid () != geteuid ()
1228 || getgid () != getegid (); 1688 || getgid () != getegid ();
1229#endif 1689#endif
1230} 1690}
1231 1691
1232unsigned int 1692unsigned int ecb_cold
1233ev_supported_backends (void) 1693ev_supported_backends (void)
1234{ 1694{
1235 unsigned int flags = 0; 1695 unsigned int flags = 0;
1236 1696
1237 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1697 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1241 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1701 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1242 1702
1243 return flags; 1703 return flags;
1244} 1704}
1245 1705
1246unsigned int 1706unsigned int ecb_cold
1247ev_recommended_backends (void) 1707ev_recommended_backends (void)
1248{ 1708{
1249 unsigned int flags = ev_supported_backends (); 1709 unsigned int flags = ev_supported_backends ();
1250 1710
1251#ifndef __NetBSD__ 1711#ifndef __NetBSD__
1252 /* kqueue is borked on everything but netbsd apparently */ 1712 /* kqueue is borked on everything but netbsd apparently */
1253 /* it usually doesn't work correctly on anything but sockets and pipes */ 1713 /* it usually doesn't work correctly on anything but sockets and pipes */
1254 flags &= ~EVBACKEND_KQUEUE; 1714 flags &= ~EVBACKEND_KQUEUE;
1255#endif 1715#endif
1256#ifdef __APPLE__ 1716#ifdef __APPLE__
1257 // flags &= ~EVBACKEND_KQUEUE; for documentation 1717 /* only select works correctly on that "unix-certified" platform */
1258 flags &= ~EVBACKEND_POLL; 1718 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1719 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1720#endif
1721#ifdef __FreeBSD__
1722 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1259#endif 1723#endif
1260 1724
1261 return flags; 1725 return flags;
1262} 1726}
1263 1727
1264unsigned int 1728unsigned int ecb_cold
1265ev_embeddable_backends (void) 1729ev_embeddable_backends (void)
1266{ 1730{
1267 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1731 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1268 1732
1269 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1733 /* 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 */ 1734 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1271 flags &= ~EVBACKEND_EPOLL; 1735 flags &= ~EVBACKEND_EPOLL;
1272 1736
1273 return flags; 1737 return flags;
1274} 1738}
1275 1739
1276unsigned int 1740unsigned int
1277ev_backend (EV_P) 1741ev_backend (EV_P)
1278{ 1742{
1279 return backend; 1743 return backend;
1280} 1744}
1281 1745
1746#if EV_FEATURE_API
1282unsigned int 1747unsigned int
1283ev_loop_count (EV_P) 1748ev_iteration (EV_P)
1284{ 1749{
1285 return loop_count; 1750 return loop_count;
1751}
1752
1753unsigned int
1754ev_depth (EV_P)
1755{
1756 return loop_depth;
1286} 1757}
1287 1758
1288void 1759void
1289ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1760ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1290{ 1761{
… …
1295ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1766ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1296{ 1767{
1297 timeout_blocktime = interval; 1768 timeout_blocktime = interval;
1298} 1769}
1299 1770
1771void
1772ev_set_userdata (EV_P_ void *data)
1773{
1774 userdata = data;
1775}
1776
1777void *
1778ev_userdata (EV_P)
1779{
1780 return userdata;
1781}
1782
1783void
1784ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1785{
1786 invoke_cb = invoke_pending_cb;
1787}
1788
1789void
1790ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1791{
1792 release_cb = release;
1793 acquire_cb = acquire;
1794}
1795#endif
1796
1797/* initialise a loop structure, must be zero-initialised */
1300static void noinline 1798static void noinline ecb_cold
1301loop_init (EV_P_ unsigned int flags) 1799loop_init (EV_P_ unsigned int flags)
1302{ 1800{
1303 if (!backend) 1801 if (!backend)
1304 { 1802 {
1803 origflags = flags;
1804
1805#if EV_USE_REALTIME
1806 if (!have_realtime)
1807 {
1808 struct timespec ts;
1809
1810 if (!clock_gettime (CLOCK_REALTIME, &ts))
1811 have_realtime = 1;
1812 }
1813#endif
1814
1305#if EV_USE_MONOTONIC 1815#if EV_USE_MONOTONIC
1816 if (!have_monotonic)
1306 { 1817 {
1307 struct timespec ts; 1818 struct timespec ts;
1819
1308 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1820 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1309 have_monotonic = 1; 1821 have_monotonic = 1;
1310 } 1822 }
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 1823#endif
1326 1824
1327 /* pid check not overridable via env */ 1825 /* pid check not overridable via env */
1328#ifndef _WIN32 1826#ifndef _WIN32
1329 if (flags & EVFLAG_FORKCHECK) 1827 if (flags & EVFLAG_FORKCHECK)
… …
1333 if (!(flags & EVFLAG_NOENV) 1831 if (!(flags & EVFLAG_NOENV)
1334 && !enable_secure () 1832 && !enable_secure ()
1335 && getenv ("LIBEV_FLAGS")) 1833 && getenv ("LIBEV_FLAGS"))
1336 flags = atoi (getenv ("LIBEV_FLAGS")); 1834 flags = atoi (getenv ("LIBEV_FLAGS"));
1337 1835
1338 if (!(flags & 0x0000ffffU)) 1836 ev_rt_now = ev_time ();
1837 mn_now = get_clock ();
1838 now_floor = mn_now;
1839 rtmn_diff = ev_rt_now - mn_now;
1840#if EV_FEATURE_API
1841 invoke_cb = ev_invoke_pending;
1842#endif
1843
1844 io_blocktime = 0.;
1845 timeout_blocktime = 0.;
1846 backend = 0;
1847 backend_fd = -1;
1848 sig_pending = 0;
1849#if EV_ASYNC_ENABLE
1850 async_pending = 0;
1851#endif
1852 pipe_write_skipped = 0;
1853 pipe_write_wanted = 0;
1854#if EV_USE_INOTIFY
1855 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1856#endif
1857#if EV_USE_SIGNALFD
1858 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1859#endif
1860
1861 if (!(flags & EVBACKEND_MASK))
1339 flags |= ev_recommended_backends (); 1862 flags |= ev_recommended_backends ();
1340 1863
1864#if EV_USE_IOCP
1865 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1866#endif
1341#if EV_USE_PORT 1867#if EV_USE_PORT
1342 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1868 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1343#endif 1869#endif
1344#if EV_USE_KQUEUE 1870#if EV_USE_KQUEUE
1345 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1871 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1352#endif 1878#endif
1353#if EV_USE_SELECT 1879#if EV_USE_SELECT
1354 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1880 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1355#endif 1881#endif
1356 1882
1883 ev_prepare_init (&pending_w, pendingcb);
1884
1885#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1357 ev_init (&pipeev, pipecb); 1886 ev_init (&pipe_w, pipecb);
1358 ev_set_priority (&pipeev, EV_MAXPRI); 1887 ev_set_priority (&pipe_w, EV_MAXPRI);
1888#endif
1359 } 1889 }
1360} 1890}
1361 1891
1362static void noinline 1892/* free up a loop structure */
1893void ecb_cold
1363loop_destroy (EV_P) 1894ev_loop_destroy (EV_P)
1364{ 1895{
1365 int i; 1896 int i;
1366 1897
1898#if EV_MULTIPLICITY
1899 /* mimic free (0) */
1900 if (!EV_A)
1901 return;
1902#endif
1903
1904#if EV_CLEANUP_ENABLE
1905 /* queue cleanup watchers (and execute them) */
1906 if (expect_false (cleanupcnt))
1907 {
1908 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1909 EV_INVOKE_PENDING;
1910 }
1911#endif
1912
1913#if EV_CHILD_ENABLE
1914 if (ev_is_active (&childev))
1915 {
1916 ev_ref (EV_A); /* child watcher */
1917 ev_signal_stop (EV_A_ &childev);
1918 }
1919#endif
1920
1367 if (ev_is_active (&pipeev)) 1921 if (ev_is_active (&pipe_w))
1368 { 1922 {
1369 ev_ref (EV_A); /* signal watcher */ 1923 /*ev_ref (EV_A);*/
1370 ev_io_stop (EV_A_ &pipeev); 1924 /*ev_io_stop (EV_A_ &pipe_w);*/
1371 1925
1372#if EV_USE_EVENTFD 1926#if EV_USE_EVENTFD
1373 if (evfd >= 0) 1927 if (evfd >= 0)
1374 close (evfd); 1928 close (evfd);
1375#endif 1929#endif
1376 1930
1377 if (evpipe [0] >= 0) 1931 if (evpipe [0] >= 0)
1378 { 1932 {
1379 close (evpipe [0]); 1933 EV_WIN32_CLOSE_FD (evpipe [0]);
1380 close (evpipe [1]); 1934 EV_WIN32_CLOSE_FD (evpipe [1]);
1381 } 1935 }
1382 } 1936 }
1937
1938#if EV_USE_SIGNALFD
1939 if (ev_is_active (&sigfd_w))
1940 close (sigfd);
1941#endif
1383 1942
1384#if EV_USE_INOTIFY 1943#if EV_USE_INOTIFY
1385 if (fs_fd >= 0) 1944 if (fs_fd >= 0)
1386 close (fs_fd); 1945 close (fs_fd);
1387#endif 1946#endif
1388 1947
1389 if (backend_fd >= 0) 1948 if (backend_fd >= 0)
1390 close (backend_fd); 1949 close (backend_fd);
1391 1950
1951#if EV_USE_IOCP
1952 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1953#endif
1392#if EV_USE_PORT 1954#if EV_USE_PORT
1393 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1955 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1394#endif 1956#endif
1395#if EV_USE_KQUEUE 1957#if EV_USE_KQUEUE
1396 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1958 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1411#if EV_IDLE_ENABLE 1973#if EV_IDLE_ENABLE
1412 array_free (idle, [i]); 1974 array_free (idle, [i]);
1413#endif 1975#endif
1414 } 1976 }
1415 1977
1416 ev_free (anfds); anfdmax = 0; 1978 ev_free (anfds); anfds = 0; anfdmax = 0;
1417 1979
1418 /* have to use the microsoft-never-gets-it-right macro */ 1980 /* have to use the microsoft-never-gets-it-right macro */
1981 array_free (rfeed, EMPTY);
1419 array_free (fdchange, EMPTY); 1982 array_free (fdchange, EMPTY);
1420 array_free (timer, EMPTY); 1983 array_free (timer, EMPTY);
1421#if EV_PERIODIC_ENABLE 1984#if EV_PERIODIC_ENABLE
1422 array_free (periodic, EMPTY); 1985 array_free (periodic, EMPTY);
1423#endif 1986#endif
1424#if EV_FORK_ENABLE 1987#if EV_FORK_ENABLE
1425 array_free (fork, EMPTY); 1988 array_free (fork, EMPTY);
1426#endif 1989#endif
1990#if EV_CLEANUP_ENABLE
1991 array_free (cleanup, EMPTY);
1992#endif
1427 array_free (prepare, EMPTY); 1993 array_free (prepare, EMPTY);
1428 array_free (check, EMPTY); 1994 array_free (check, EMPTY);
1429#if EV_ASYNC_ENABLE 1995#if EV_ASYNC_ENABLE
1430 array_free (async, EMPTY); 1996 array_free (async, EMPTY);
1431#endif 1997#endif
1432 1998
1433 backend = 0; 1999 backend = 0;
2000
2001#if EV_MULTIPLICITY
2002 if (ev_is_default_loop (EV_A))
2003#endif
2004 ev_default_loop_ptr = 0;
2005#if EV_MULTIPLICITY
2006 else
2007 ev_free (EV_A);
2008#endif
1434} 2009}
1435 2010
1436#if EV_USE_INOTIFY 2011#if EV_USE_INOTIFY
1437void inline_size infy_fork (EV_P); 2012inline_size void infy_fork (EV_P);
1438#endif 2013#endif
1439 2014
1440void inline_size 2015inline_size void
1441loop_fork (EV_P) 2016loop_fork (EV_P)
1442{ 2017{
1443#if EV_USE_PORT 2018#if EV_USE_PORT
1444 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2019 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1445#endif 2020#endif
… …
1451#endif 2026#endif
1452#if EV_USE_INOTIFY 2027#if EV_USE_INOTIFY
1453 infy_fork (EV_A); 2028 infy_fork (EV_A);
1454#endif 2029#endif
1455 2030
1456 if (ev_is_active (&pipeev)) 2031 if (ev_is_active (&pipe_w))
1457 { 2032 {
1458 /* this "locks" the handlers against writing to the pipe */ 2033 /* 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 2034
1465 ev_ref (EV_A); 2035 ev_ref (EV_A);
1466 ev_io_stop (EV_A_ &pipeev); 2036 ev_io_stop (EV_A_ &pipe_w);
1467 2037
1468#if EV_USE_EVENTFD 2038#if EV_USE_EVENTFD
1469 if (evfd >= 0) 2039 if (evfd >= 0)
1470 close (evfd); 2040 close (evfd);
1471#endif 2041#endif
1472 2042
1473 if (evpipe [0] >= 0) 2043 if (evpipe [0] >= 0)
1474 { 2044 {
1475 close (evpipe [0]); 2045 EV_WIN32_CLOSE_FD (evpipe [0]);
1476 close (evpipe [1]); 2046 EV_WIN32_CLOSE_FD (evpipe [1]);
1477 } 2047 }
1478 2048
2049#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1479 evpipe_init (EV_A); 2050 evpipe_init (EV_A);
1480 /* now iterate over everything, in case we missed something */ 2051 /* now iterate over everything, in case we missed something */
1481 pipecb (EV_A_ &pipeev, EV_READ); 2052 pipecb (EV_A_ &pipe_w, EV_READ);
2053#endif
1482 } 2054 }
1483 2055
1484 postfork = 0; 2056 postfork = 0;
1485} 2057}
1486 2058
1487#if EV_MULTIPLICITY 2059#if EV_MULTIPLICITY
1488 2060
1489struct ev_loop * 2061struct ev_loop * ecb_cold
1490ev_loop_new (unsigned int flags) 2062ev_loop_new (unsigned int flags)
1491{ 2063{
1492 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2064 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1493 2065
1494 memset (loop, 0, sizeof (struct ev_loop)); 2066 memset (EV_A, 0, sizeof (struct ev_loop));
1495
1496 loop_init (EV_A_ flags); 2067 loop_init (EV_A_ flags);
1497 2068
1498 if (ev_backend (EV_A)) 2069 if (ev_backend (EV_A))
1499 return loop; 2070 return EV_A;
1500 2071
2072 ev_free (EV_A);
1501 return 0; 2073 return 0;
1502} 2074}
1503 2075
1504void 2076#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 2077
1517#if EV_VERIFY 2078#if EV_VERIFY
1518static void 2079static void noinline ecb_cold
2080verify_watcher (EV_P_ W w)
2081{
2082 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2083
2084 if (w->pending)
2085 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2086}
2087
2088static void noinline ecb_cold
2089verify_heap (EV_P_ ANHE *heap, int N)
2090{
2091 int i;
2092
2093 for (i = HEAP0; i < N + HEAP0; ++i)
2094 {
2095 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
2096 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
2097 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
2098
2099 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2100 }
2101}
2102
2103static void noinline ecb_cold
1519array_check (W **ws, int cnt) 2104array_verify (EV_P_ W *ws, int cnt)
1520{ 2105{
1521 while (cnt--) 2106 while (cnt--)
2107 {
1522 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2108 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
2109 verify_watcher (EV_A_ ws [cnt]);
2110 }
1523} 2111}
1524#endif 2112#endif
1525 2113
1526void 2114#if EV_FEATURE_API
2115void ecb_cold
1527ev_loop_verify (EV_P) 2116ev_verify (EV_P)
1528{ 2117{
1529#if EV_VERIFY 2118#if EV_VERIFY
1530 int i; 2119 int i;
2120 WL w;
1531 2121
2122 assert (activecnt >= -1);
2123
2124 assert (fdchangemax >= fdchangecnt);
2125 for (i = 0; i < fdchangecnt; ++i)
2126 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2127
2128 assert (anfdmax >= 0);
2129 for (i = 0; i < anfdmax; ++i)
2130 for (w = anfds [i].head; w; w = w->next)
2131 {
2132 verify_watcher (EV_A_ (W)w);
2133 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2134 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2135 }
2136
2137 assert (timermax >= timercnt);
1532 checkheap (timers, timercnt); 2138 verify_heap (EV_A_ timers, timercnt);
2139
1533#if EV_PERIODIC_ENABLE 2140#if EV_PERIODIC_ENABLE
2141 assert (periodicmax >= periodiccnt);
1534 checkheap (periodics, periodiccnt); 2142 verify_heap (EV_A_ periodics, periodiccnt);
1535#endif 2143#endif
1536 2144
2145 for (i = NUMPRI; i--; )
2146 {
2147 assert (pendingmax [i] >= pendingcnt [i]);
1537#if EV_IDLE_ENABLE 2148#if EV_IDLE_ENABLE
1538 for (i = NUMPRI; i--; ) 2149 assert (idleall >= 0);
2150 assert (idlemax [i] >= idlecnt [i]);
1539 array_check ((W **)idles [i], idlecnt [i]); 2151 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1540#endif 2152#endif
2153 }
2154
1541#if EV_FORK_ENABLE 2155#if EV_FORK_ENABLE
2156 assert (forkmax >= forkcnt);
1542 array_check ((W **)forks, forkcnt); 2157 array_verify (EV_A_ (W *)forks, forkcnt);
1543#endif 2158#endif
2159
2160#if EV_CLEANUP_ENABLE
2161 assert (cleanupmax >= cleanupcnt);
2162 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2163#endif
2164
1544#if EV_ASYNC_ENABLE 2165#if EV_ASYNC_ENABLE
2166 assert (asyncmax >= asynccnt);
1545 array_check ((W **)asyncs, asynccnt); 2167 array_verify (EV_A_ (W *)asyncs, asynccnt);
2168#endif
2169
2170#if EV_PREPARE_ENABLE
2171 assert (preparemax >= preparecnt);
2172 array_verify (EV_A_ (W *)prepares, preparecnt);
2173#endif
2174
2175#if EV_CHECK_ENABLE
2176 assert (checkmax >= checkcnt);
2177 array_verify (EV_A_ (W *)checks, checkcnt);
2178#endif
2179
2180# if 0
2181#if EV_CHILD_ENABLE
2182 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2183 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2184#endif
1546#endif 2185# endif
1547 array_check ((W **)prepares, preparecnt);
1548 array_check ((W **)checks, checkcnt);
1549#endif 2186#endif
1550} 2187}
1551 2188#endif
1552#endif /* multiplicity */
1553 2189
1554#if EV_MULTIPLICITY 2190#if EV_MULTIPLICITY
1555struct ev_loop * 2191struct ev_loop * ecb_cold
1556ev_default_loop_init (unsigned int flags)
1557#else 2192#else
1558int 2193int
2194#endif
1559ev_default_loop (unsigned int flags) 2195ev_default_loop (unsigned int flags)
1560#endif
1561{ 2196{
1562 if (!ev_default_loop_ptr) 2197 if (!ev_default_loop_ptr)
1563 { 2198 {
1564#if EV_MULTIPLICITY 2199#if EV_MULTIPLICITY
1565 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2200 EV_P = ev_default_loop_ptr = &default_loop_struct;
1566#else 2201#else
1567 ev_default_loop_ptr = 1; 2202 ev_default_loop_ptr = 1;
1568#endif 2203#endif
1569 2204
1570 loop_init (EV_A_ flags); 2205 loop_init (EV_A_ flags);
1571 2206
1572 if (ev_backend (EV_A)) 2207 if (ev_backend (EV_A))
1573 { 2208 {
1574#ifndef _WIN32 2209#if EV_CHILD_ENABLE
1575 ev_signal_init (&childev, childcb, SIGCHLD); 2210 ev_signal_init (&childev, childcb, SIGCHLD);
1576 ev_set_priority (&childev, EV_MAXPRI); 2211 ev_set_priority (&childev, EV_MAXPRI);
1577 ev_signal_start (EV_A_ &childev); 2212 ev_signal_start (EV_A_ &childev);
1578 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2213 ev_unref (EV_A); /* child watcher should not keep loop alive */
1579#endif 2214#endif
… …
1584 2219
1585 return ev_default_loop_ptr; 2220 return ev_default_loop_ptr;
1586} 2221}
1587 2222
1588void 2223void
1589ev_default_destroy (void) 2224ev_loop_fork (EV_P)
1590{ 2225{
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 */ 2226 postfork = 1; /* must be in line with ev_default_fork */
1612} 2227}
1613 2228
1614/*****************************************************************************/ 2229/*****************************************************************************/
1615 2230
1616void 2231void
1617ev_invoke (EV_P_ void *w, int revents) 2232ev_invoke (EV_P_ void *w, int revents)
1618{ 2233{
1619 EV_CB_INVOKE ((W)w, revents); 2234 EV_CB_INVOKE ((W)w, revents);
1620} 2235}
1621 2236
1622void inline_speed 2237unsigned int
1623call_pending (EV_P) 2238ev_pending_count (EV_P)
2239{
2240 int pri;
2241 unsigned int count = 0;
2242
2243 for (pri = NUMPRI; pri--; )
2244 count += pendingcnt [pri];
2245
2246 return count;
2247}
2248
2249void noinline
2250ev_invoke_pending (EV_P)
1624{ 2251{
1625 int pri; 2252 int pri;
1626 2253
1627 for (pri = NUMPRI; pri--; ) 2254 for (pri = NUMPRI; pri--; )
1628 while (pendingcnt [pri]) 2255 while (pendingcnt [pri])
1629 { 2256 {
1630 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2257 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1631 2258
1632 if (expect_true (p->w))
1633 {
1634 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1635
1636 p->w->pending = 0; 2259 p->w->pending = 0;
1637 EV_CB_INVOKE (p->w, p->events); 2260 EV_CB_INVOKE (p->w, p->events);
1638 EV_FREQUENT_CHECK; 2261 EV_FREQUENT_CHECK;
1639 }
1640 } 2262 }
1641} 2263}
1642 2264
1643#if EV_IDLE_ENABLE 2265#if EV_IDLE_ENABLE
1644void inline_size 2266/* make idle watchers pending. this handles the "call-idle */
2267/* only when higher priorities are idle" logic */
2268inline_size void
1645idle_reify (EV_P) 2269idle_reify (EV_P)
1646{ 2270{
1647 if (expect_false (idleall)) 2271 if (expect_false (idleall))
1648 { 2272 {
1649 int pri; 2273 int pri;
… …
1661 } 2285 }
1662 } 2286 }
1663} 2287}
1664#endif 2288#endif
1665 2289
1666void inline_size 2290/* make timers pending */
2291inline_size void
1667timers_reify (EV_P) 2292timers_reify (EV_P)
1668{ 2293{
1669 EV_FREQUENT_CHECK; 2294 EV_FREQUENT_CHECK;
1670 2295
1671 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2296 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1672 { 2297 {
1673 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2298 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 { 2299 {
2300 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2301
2302 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2303
2304 /* first reschedule or stop timer */
2305 if (w->repeat)
2306 {
1680 ev_at (w) += w->repeat; 2307 ev_at (w) += w->repeat;
1681 if (ev_at (w) < mn_now) 2308 if (ev_at (w) < mn_now)
1682 ev_at (w) = mn_now; 2309 ev_at (w) = mn_now;
1683 2310
1684 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2311 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1685 2312
1686 ANHE_at_cache (timers [HEAP0]); 2313 ANHE_at_cache (timers [HEAP0]);
1687 downheap (timers, timercnt, HEAP0); 2314 downheap (timers, timercnt, HEAP0);
2315 }
2316 else
2317 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2318
2319 EV_FREQUENT_CHECK;
2320 feed_reverse (EV_A_ (W)w);
1688 } 2321 }
1689 else 2322 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1690 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1691 2323
1692 EV_FREQUENT_CHECK; 2324 feed_reverse_done (EV_A_ EV_TIMER);
1693 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1694 } 2325 }
1695} 2326}
1696 2327
1697#if EV_PERIODIC_ENABLE 2328#if EV_PERIODIC_ENABLE
1698void inline_size 2329
2330static void noinline
2331periodic_recalc (EV_P_ ev_periodic *w)
2332{
2333 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2334 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2335
2336 /* the above almost always errs on the low side */
2337 while (at <= ev_rt_now)
2338 {
2339 ev_tstamp nat = at + w->interval;
2340
2341 /* when resolution fails us, we use ev_rt_now */
2342 if (expect_false (nat == at))
2343 {
2344 at = ev_rt_now;
2345 break;
2346 }
2347
2348 at = nat;
2349 }
2350
2351 ev_at (w) = at;
2352}
2353
2354/* make periodics pending */
2355inline_size void
1699periodics_reify (EV_P) 2356periodics_reify (EV_P)
1700{ 2357{
1701 EV_FREQUENT_CHECK; 2358 EV_FREQUENT_CHECK;
1702 2359
1703 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2360 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1704 { 2361 {
1705 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2362 int feed_count = 0;
1706 2363
1707 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2364 do
1708
1709 /* first reschedule or stop timer */
1710 if (w->reschedule_cb)
1711 { 2365 {
2366 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2367
2368 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2369
2370 /* first reschedule or stop timer */
2371 if (w->reschedule_cb)
2372 {
1712 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2373 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1713 2374
1714 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2375 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1715 2376
1716 ANHE_at_cache (periodics [HEAP0]); 2377 ANHE_at_cache (periodics [HEAP0]);
1717 downheap (periodics, periodiccnt, HEAP0); 2378 downheap (periodics, periodiccnt, HEAP0);
2379 }
2380 else if (w->interval)
2381 {
2382 periodic_recalc (EV_A_ w);
2383 ANHE_at_cache (periodics [HEAP0]);
2384 downheap (periodics, periodiccnt, HEAP0);
2385 }
2386 else
2387 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2388
2389 EV_FREQUENT_CHECK;
2390 feed_reverse (EV_A_ (W)w);
1718 } 2391 }
1719 else if (w->interval) 2392 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 2393
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); 2394 feed_reverse_done (EV_A_ EV_PERIODIC);
1743 } 2395 }
1744} 2396}
1745 2397
2398/* simply recalculate all periodics */
2399/* TODO: maybe ensure that at least one event happens when jumping forward? */
1746static void noinline 2400static void noinline ecb_cold
1747periodics_reschedule (EV_P) 2401periodics_reschedule (EV_P)
1748{ 2402{
1749 int i; 2403 int i;
1750 2404
1751 /* adjust periodics after time jump */ 2405 /* adjust periodics after time jump */
… …
1754 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2408 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1755 2409
1756 if (w->reschedule_cb) 2410 if (w->reschedule_cb)
1757 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2411 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1758 else if (w->interval) 2412 else if (w->interval)
1759 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2413 periodic_recalc (EV_A_ w);
1760 2414
1761 ANHE_at_cache (periodics [i]); 2415 ANHE_at_cache (periodics [i]);
1762 } 2416 }
1763 2417
1764 reheap (periodics, periodiccnt); 2418 reheap (periodics, periodiccnt);
1765} 2419}
1766#endif 2420#endif
1767 2421
1768void inline_speed 2422/* adjust all timers by a given offset */
2423static void noinline ecb_cold
2424timers_reschedule (EV_P_ ev_tstamp adjust)
2425{
2426 int i;
2427
2428 for (i = 0; i < timercnt; ++i)
2429 {
2430 ANHE *he = timers + i + HEAP0;
2431 ANHE_w (*he)->at += adjust;
2432 ANHE_at_cache (*he);
2433 }
2434}
2435
2436/* fetch new monotonic and realtime times from the kernel */
2437/* also detect if there was a timejump, and act accordingly */
2438inline_speed void
1769time_update (EV_P_ ev_tstamp max_block) 2439time_update (EV_P_ ev_tstamp max_block)
1770{ 2440{
1771 int i;
1772
1773#if EV_USE_MONOTONIC 2441#if EV_USE_MONOTONIC
1774 if (expect_true (have_monotonic)) 2442 if (expect_true (have_monotonic))
1775 { 2443 {
2444 int i;
1776 ev_tstamp odiff = rtmn_diff; 2445 ev_tstamp odiff = rtmn_diff;
1777 2446
1778 mn_now = get_clock (); 2447 mn_now = get_clock ();
1779 2448
1780 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2449 /* 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 2465 * doesn't hurt either as we only do this on time-jumps or
1797 * in the unlikely event of having been preempted here. 2466 * in the unlikely event of having been preempted here.
1798 */ 2467 */
1799 for (i = 4; --i; ) 2468 for (i = 4; --i; )
1800 { 2469 {
2470 ev_tstamp diff;
1801 rtmn_diff = ev_rt_now - mn_now; 2471 rtmn_diff = ev_rt_now - mn_now;
1802 2472
2473 diff = odiff - rtmn_diff;
2474
1803 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2475 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1804 return; /* all is well */ 2476 return; /* all is well */
1805 2477
1806 ev_rt_now = ev_time (); 2478 ev_rt_now = ev_time ();
1807 mn_now = get_clock (); 2479 mn_now = get_clock ();
1808 now_floor = mn_now; 2480 now_floor = mn_now;
1809 } 2481 }
1810 2482
2483 /* no timer adjustment, as the monotonic clock doesn't jump */
2484 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1811# if EV_PERIODIC_ENABLE 2485# if EV_PERIODIC_ENABLE
1812 periodics_reschedule (EV_A); 2486 periodics_reschedule (EV_A);
1813# endif 2487# endif
1814 /* no timer adjustment, as the monotonic clock doesn't jump */
1815 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1816 } 2488 }
1817 else 2489 else
1818#endif 2490#endif
1819 { 2491 {
1820 ev_rt_now = ev_time (); 2492 ev_rt_now = ev_time ();
1821 2493
1822 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2494 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1823 { 2495 {
2496 /* adjust timers. this is easy, as the offset is the same for all of them */
2497 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1824#if EV_PERIODIC_ENABLE 2498#if EV_PERIODIC_ENABLE
1825 periodics_reschedule (EV_A); 2499 periodics_reschedule (EV_A);
1826#endif 2500#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 } 2501 }
1835 2502
1836 mn_now = ev_rt_now; 2503 mn_now = ev_rt_now;
1837 } 2504 }
1838} 2505}
1839 2506
1840void 2507void
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) 2508ev_run (EV_P_ int flags)
1856{ 2509{
2510#if EV_FEATURE_API
2511 ++loop_depth;
2512#endif
2513
2514 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2515
1857 loop_done = EVUNLOOP_CANCEL; 2516 loop_done = EVBREAK_CANCEL;
1858 2517
1859 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2518 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1860 2519
1861 do 2520 do
1862 { 2521 {
1863#if EV_VERIFY >= 2 2522#if EV_VERIFY >= 2
1864 ev_loop_verify (EV_A); 2523 ev_verify (EV_A);
1865#endif 2524#endif
1866 2525
1867#ifndef _WIN32 2526#ifndef _WIN32
1868 if (expect_false (curpid)) /* penalise the forking check even more */ 2527 if (expect_false (curpid)) /* penalise the forking check even more */
1869 if (expect_false (getpid () != curpid)) 2528 if (expect_false (getpid () != curpid))
… …
1877 /* we might have forked, so queue fork handlers */ 2536 /* we might have forked, so queue fork handlers */
1878 if (expect_false (postfork)) 2537 if (expect_false (postfork))
1879 if (forkcnt) 2538 if (forkcnt)
1880 { 2539 {
1881 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2540 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1882 call_pending (EV_A); 2541 EV_INVOKE_PENDING;
1883 } 2542 }
1884#endif 2543#endif
1885 2544
2545#if EV_PREPARE_ENABLE
1886 /* queue prepare watchers (and execute them) */ 2546 /* queue prepare watchers (and execute them) */
1887 if (expect_false (preparecnt)) 2547 if (expect_false (preparecnt))
1888 { 2548 {
1889 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2549 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1890 call_pending (EV_A); 2550 EV_INVOKE_PENDING;
1891 } 2551 }
2552#endif
1892 2553
1893 if (expect_false (!activecnt)) 2554 if (expect_false (loop_done))
1894 break; 2555 break;
1895 2556
1896 /* we might have forked, so reify kernel state if necessary */ 2557 /* we might have forked, so reify kernel state if necessary */
1897 if (expect_false (postfork)) 2558 if (expect_false (postfork))
1898 loop_fork (EV_A); 2559 loop_fork (EV_A);
… …
1903 /* calculate blocking time */ 2564 /* calculate blocking time */
1904 { 2565 {
1905 ev_tstamp waittime = 0.; 2566 ev_tstamp waittime = 0.;
1906 ev_tstamp sleeptime = 0.; 2567 ev_tstamp sleeptime = 0.;
1907 2568
2569 /* remember old timestamp for io_blocktime calculation */
2570 ev_tstamp prev_mn_now = mn_now;
2571
2572 /* update time to cancel out callback processing overhead */
2573 time_update (EV_A_ 1e100);
2574
2575 /* from now on, we want a pipe-wake-up */
2576 pipe_write_wanted = 1;
2577
1908 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2578 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1909 { 2579 {
1910 /* update time to cancel out callback processing overhead */
1911 time_update (EV_A_ 1e100);
1912
1913 waittime = MAX_BLOCKTIME; 2580 waittime = MAX_BLOCKTIME;
1914 2581
1915 if (timercnt) 2582 if (timercnt)
1916 { 2583 {
1917 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2584 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1918 if (waittime > to) waittime = to; 2585 if (waittime > to) waittime = to;
1919 } 2586 }
1920 2587
1921#if EV_PERIODIC_ENABLE 2588#if EV_PERIODIC_ENABLE
1922 if (periodiccnt) 2589 if (periodiccnt)
1923 { 2590 {
1924 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2591 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1925 if (waittime > to) waittime = to; 2592 if (waittime > to) waittime = to;
1926 } 2593 }
1927#endif 2594#endif
1928 2595
2596 /* don't let timeouts decrease the waittime below timeout_blocktime */
1929 if (expect_false (waittime < timeout_blocktime)) 2597 if (expect_false (waittime < timeout_blocktime))
1930 waittime = timeout_blocktime; 2598 waittime = timeout_blocktime;
1931 2599
1932 sleeptime = waittime - backend_fudge; 2600 /* at this point, we NEED to wait, so we have to ensure */
2601 /* to pass a minimum nonzero value to the backend */
2602 if (expect_false (waittime < backend_mintime))
2603 waittime = backend_mintime;
1933 2604
2605 /* extra check because io_blocktime is commonly 0 */
1934 if (expect_true (sleeptime > io_blocktime)) 2606 if (expect_false (io_blocktime))
1935 sleeptime = io_blocktime;
1936
1937 if (sleeptime)
1938 { 2607 {
2608 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2609
2610 if (sleeptime > waittime - backend_mintime)
2611 sleeptime = waittime - backend_mintime;
2612
2613 if (expect_true (sleeptime > 0.))
2614 {
1939 ev_sleep (sleeptime); 2615 ev_sleep (sleeptime);
1940 waittime -= sleeptime; 2616 waittime -= sleeptime;
2617 }
1941 } 2618 }
1942 } 2619 }
1943 2620
2621#if EV_FEATURE_API
1944 ++loop_count; 2622 ++loop_count;
2623#endif
2624 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1945 backend_poll (EV_A_ waittime); 2625 backend_poll (EV_A_ waittime);
2626 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2627
2628 pipe_write_wanted = 0;
2629
2630 if (pipe_write_skipped)
2631 {
2632 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2633 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2634 }
2635
1946 2636
1947 /* update ev_rt_now, do magic */ 2637 /* update ev_rt_now, do magic */
1948 time_update (EV_A_ waittime + sleeptime); 2638 time_update (EV_A_ waittime + sleeptime);
1949 } 2639 }
1950 2640
… …
1957#if EV_IDLE_ENABLE 2647#if EV_IDLE_ENABLE
1958 /* queue idle watchers unless other events are pending */ 2648 /* queue idle watchers unless other events are pending */
1959 idle_reify (EV_A); 2649 idle_reify (EV_A);
1960#endif 2650#endif
1961 2651
2652#if EV_CHECK_ENABLE
1962 /* queue check watchers, to be executed first */ 2653 /* queue check watchers, to be executed first */
1963 if (expect_false (checkcnt)) 2654 if (expect_false (checkcnt))
1964 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2655 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2656#endif
1965 2657
1966 call_pending (EV_A); 2658 EV_INVOKE_PENDING;
1967 } 2659 }
1968 while (expect_true ( 2660 while (expect_true (
1969 activecnt 2661 activecnt
1970 && !loop_done 2662 && !loop_done
1971 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2663 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1972 )); 2664 ));
1973 2665
1974 if (loop_done == EVUNLOOP_ONE) 2666 if (loop_done == EVBREAK_ONE)
1975 loop_done = EVUNLOOP_CANCEL; 2667 loop_done = EVBREAK_CANCEL;
2668
2669#if EV_FEATURE_API
2670 --loop_depth;
2671#endif
1976} 2672}
1977 2673
1978void 2674void
1979ev_unloop (EV_P_ int how) 2675ev_break (EV_P_ int how)
1980{ 2676{
1981 loop_done = how; 2677 loop_done = how;
1982} 2678}
1983 2679
2680void
2681ev_ref (EV_P)
2682{
2683 ++activecnt;
2684}
2685
2686void
2687ev_unref (EV_P)
2688{
2689 --activecnt;
2690}
2691
2692void
2693ev_now_update (EV_P)
2694{
2695 time_update (EV_A_ 1e100);
2696}
2697
2698void
2699ev_suspend (EV_P)
2700{
2701 ev_now_update (EV_A);
2702}
2703
2704void
2705ev_resume (EV_P)
2706{
2707 ev_tstamp mn_prev = mn_now;
2708
2709 ev_now_update (EV_A);
2710 timers_reschedule (EV_A_ mn_now - mn_prev);
2711#if EV_PERIODIC_ENABLE
2712 /* TODO: really do this? */
2713 periodics_reschedule (EV_A);
2714#endif
2715}
2716
1984/*****************************************************************************/ 2717/*****************************************************************************/
2718/* singly-linked list management, used when the expected list length is short */
1985 2719
1986void inline_size 2720inline_size void
1987wlist_add (WL *head, WL elem) 2721wlist_add (WL *head, WL elem)
1988{ 2722{
1989 elem->next = *head; 2723 elem->next = *head;
1990 *head = elem; 2724 *head = elem;
1991} 2725}
1992 2726
1993void inline_size 2727inline_size void
1994wlist_del (WL *head, WL elem) 2728wlist_del (WL *head, WL elem)
1995{ 2729{
1996 while (*head) 2730 while (*head)
1997 { 2731 {
1998 if (*head == elem) 2732 if (expect_true (*head == elem))
1999 { 2733 {
2000 *head = elem->next; 2734 *head = elem->next;
2001 return; 2735 break;
2002 } 2736 }
2003 2737
2004 head = &(*head)->next; 2738 head = &(*head)->next;
2005 } 2739 }
2006} 2740}
2007 2741
2008void inline_speed 2742/* internal, faster, version of ev_clear_pending */
2743inline_speed void
2009clear_pending (EV_P_ W w) 2744clear_pending (EV_P_ W w)
2010{ 2745{
2011 if (w->pending) 2746 if (w->pending)
2012 { 2747 {
2013 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2748 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2014 w->pending = 0; 2749 w->pending = 0;
2015 } 2750 }
2016} 2751}
2017 2752
2018int 2753int
… …
2022 int pending = w_->pending; 2757 int pending = w_->pending;
2023 2758
2024 if (expect_true (pending)) 2759 if (expect_true (pending))
2025 { 2760 {
2026 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2761 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2762 p->w = (W)&pending_w;
2027 w_->pending = 0; 2763 w_->pending = 0;
2028 p->w = 0;
2029 return p->events; 2764 return p->events;
2030 } 2765 }
2031 else 2766 else
2032 return 0; 2767 return 0;
2033} 2768}
2034 2769
2035void inline_size 2770inline_size void
2036pri_adjust (EV_P_ W w) 2771pri_adjust (EV_P_ W w)
2037{ 2772{
2038 int pri = w->priority; 2773 int pri = ev_priority (w);
2039 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2774 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2040 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2775 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2041 w->priority = pri; 2776 ev_set_priority (w, pri);
2042} 2777}
2043 2778
2044void inline_speed 2779inline_speed void
2045ev_start (EV_P_ W w, int active) 2780ev_start (EV_P_ W w, int active)
2046{ 2781{
2047 pri_adjust (EV_A_ w); 2782 pri_adjust (EV_A_ w);
2048 w->active = active; 2783 w->active = active;
2049 ev_ref (EV_A); 2784 ev_ref (EV_A);
2050} 2785}
2051 2786
2052void inline_size 2787inline_size void
2053ev_stop (EV_P_ W w) 2788ev_stop (EV_P_ W w)
2054{ 2789{
2055 ev_unref (EV_A); 2790 ev_unref (EV_A);
2056 w->active = 0; 2791 w->active = 0;
2057} 2792}
… …
2064 int fd = w->fd; 2799 int fd = w->fd;
2065 2800
2066 if (expect_false (ev_is_active (w))) 2801 if (expect_false (ev_is_active (w)))
2067 return; 2802 return;
2068 2803
2069 assert (("ev_io_start called with negative fd", fd >= 0)); 2804 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2805 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2070 2806
2071 EV_FREQUENT_CHECK; 2807 EV_FREQUENT_CHECK;
2072 2808
2073 ev_start (EV_A_ (W)w, 1); 2809 ev_start (EV_A_ (W)w, 1);
2074 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2810 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2075 wlist_add (&anfds[fd].head, (WL)w); 2811 wlist_add (&anfds[fd].head, (WL)w);
2076 2812
2077 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2813 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2078 w->events &= ~EV_IOFDSET; 2814 w->events &= ~EV__IOFDSET;
2079 2815
2080 EV_FREQUENT_CHECK; 2816 EV_FREQUENT_CHECK;
2081} 2817}
2082 2818
2083void noinline 2819void noinline
… …
2085{ 2821{
2086 clear_pending (EV_A_ (W)w); 2822 clear_pending (EV_A_ (W)w);
2087 if (expect_false (!ev_is_active (w))) 2823 if (expect_false (!ev_is_active (w)))
2088 return; 2824 return;
2089 2825
2090 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2826 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2091 2827
2092 EV_FREQUENT_CHECK; 2828 EV_FREQUENT_CHECK;
2093 2829
2094 wlist_del (&anfds[w->fd].head, (WL)w); 2830 wlist_del (&anfds[w->fd].head, (WL)w);
2095 ev_stop (EV_A_ (W)w); 2831 ev_stop (EV_A_ (W)w);
2096 2832
2097 fd_change (EV_A_ w->fd, 1); 2833 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2098 2834
2099 EV_FREQUENT_CHECK; 2835 EV_FREQUENT_CHECK;
2100} 2836}
2101 2837
2102void noinline 2838void noinline
… …
2105 if (expect_false (ev_is_active (w))) 2841 if (expect_false (ev_is_active (w)))
2106 return; 2842 return;
2107 2843
2108 ev_at (w) += mn_now; 2844 ev_at (w) += mn_now;
2109 2845
2110 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2846 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2111 2847
2112 EV_FREQUENT_CHECK; 2848 EV_FREQUENT_CHECK;
2113 2849
2114 ++timercnt; 2850 ++timercnt;
2115 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2851 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2118 ANHE_at_cache (timers [ev_active (w)]); 2854 ANHE_at_cache (timers [ev_active (w)]);
2119 upheap (timers, ev_active (w)); 2855 upheap (timers, ev_active (w));
2120 2856
2121 EV_FREQUENT_CHECK; 2857 EV_FREQUENT_CHECK;
2122 2858
2123 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2859 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2124} 2860}
2125 2861
2126void noinline 2862void noinline
2127ev_timer_stop (EV_P_ ev_timer *w) 2863ev_timer_stop (EV_P_ ev_timer *w)
2128{ 2864{
… …
2133 EV_FREQUENT_CHECK; 2869 EV_FREQUENT_CHECK;
2134 2870
2135 { 2871 {
2136 int active = ev_active (w); 2872 int active = ev_active (w);
2137 2873
2138 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2874 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2139 2875
2140 --timercnt; 2876 --timercnt;
2141 2877
2142 if (expect_true (active < timercnt + HEAP0)) 2878 if (expect_true (active < timercnt + HEAP0))
2143 { 2879 {
2144 timers [active] = timers [timercnt + HEAP0]; 2880 timers [active] = timers [timercnt + HEAP0];
2145 adjustheap (timers, timercnt, active); 2881 adjustheap (timers, timercnt, active);
2146 } 2882 }
2147 } 2883 }
2148 2884
2149 EV_FREQUENT_CHECK;
2150
2151 ev_at (w) -= mn_now; 2885 ev_at (w) -= mn_now;
2152 2886
2153 ev_stop (EV_A_ (W)w); 2887 ev_stop (EV_A_ (W)w);
2888
2889 EV_FREQUENT_CHECK;
2154} 2890}
2155 2891
2156void noinline 2892void noinline
2157ev_timer_again (EV_P_ ev_timer *w) 2893ev_timer_again (EV_P_ ev_timer *w)
2158{ 2894{
… …
2176 } 2912 }
2177 2913
2178 EV_FREQUENT_CHECK; 2914 EV_FREQUENT_CHECK;
2179} 2915}
2180 2916
2917ev_tstamp
2918ev_timer_remaining (EV_P_ ev_timer *w)
2919{
2920 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2921}
2922
2181#if EV_PERIODIC_ENABLE 2923#if EV_PERIODIC_ENABLE
2182void noinline 2924void noinline
2183ev_periodic_start (EV_P_ ev_periodic *w) 2925ev_periodic_start (EV_P_ ev_periodic *w)
2184{ 2926{
2185 if (expect_false (ev_is_active (w))) 2927 if (expect_false (ev_is_active (w)))
… …
2187 2929
2188 if (w->reschedule_cb) 2930 if (w->reschedule_cb)
2189 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2931 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2190 else if (w->interval) 2932 else if (w->interval)
2191 { 2933 {
2192 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2934 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 */ 2935 periodic_recalc (EV_A_ w);
2194 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2195 } 2936 }
2196 else 2937 else
2197 ev_at (w) = w->offset; 2938 ev_at (w) = w->offset;
2198 2939
2199 EV_FREQUENT_CHECK; 2940 EV_FREQUENT_CHECK;
… …
2205 ANHE_at_cache (periodics [ev_active (w)]); 2946 ANHE_at_cache (periodics [ev_active (w)]);
2206 upheap (periodics, ev_active (w)); 2947 upheap (periodics, ev_active (w));
2207 2948
2208 EV_FREQUENT_CHECK; 2949 EV_FREQUENT_CHECK;
2209 2950
2210 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2951 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2211} 2952}
2212 2953
2213void noinline 2954void noinline
2214ev_periodic_stop (EV_P_ ev_periodic *w) 2955ev_periodic_stop (EV_P_ ev_periodic *w)
2215{ 2956{
… …
2220 EV_FREQUENT_CHECK; 2961 EV_FREQUENT_CHECK;
2221 2962
2222 { 2963 {
2223 int active = ev_active (w); 2964 int active = ev_active (w);
2224 2965
2225 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2966 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2226 2967
2227 --periodiccnt; 2968 --periodiccnt;
2228 2969
2229 if (expect_true (active < periodiccnt + HEAP0)) 2970 if (expect_true (active < periodiccnt + HEAP0))
2230 { 2971 {
2231 periodics [active] = periodics [periodiccnt + HEAP0]; 2972 periodics [active] = periodics [periodiccnt + HEAP0];
2232 adjustheap (periodics, periodiccnt, active); 2973 adjustheap (periodics, periodiccnt, active);
2233 } 2974 }
2234 } 2975 }
2235 2976
2236 EV_FREQUENT_CHECK;
2237
2238 ev_stop (EV_A_ (W)w); 2977 ev_stop (EV_A_ (W)w);
2978
2979 EV_FREQUENT_CHECK;
2239} 2980}
2240 2981
2241void noinline 2982void noinline
2242ev_periodic_again (EV_P_ ev_periodic *w) 2983ev_periodic_again (EV_P_ ev_periodic *w)
2243{ 2984{
… …
2249 2990
2250#ifndef SA_RESTART 2991#ifndef SA_RESTART
2251# define SA_RESTART 0 2992# define SA_RESTART 0
2252#endif 2993#endif
2253 2994
2995#if EV_SIGNAL_ENABLE
2996
2254void noinline 2997void noinline
2255ev_signal_start (EV_P_ ev_signal *w) 2998ev_signal_start (EV_P_ ev_signal *w)
2256{ 2999{
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))) 3000 if (expect_false (ev_is_active (w)))
2261 return; 3001 return;
2262 3002
2263 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3003 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2264 3004
2265 evpipe_init (EV_A); 3005#if EV_MULTIPLICITY
3006 assert (("libev: a signal must not be attached to two different loops",
3007 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2266 3008
2267 EV_FREQUENT_CHECK; 3009 signals [w->signum - 1].loop = EV_A;
3010#endif
2268 3011
3012 EV_FREQUENT_CHECK;
3013
3014#if EV_USE_SIGNALFD
3015 if (sigfd == -2)
2269 { 3016 {
2270#ifndef _WIN32 3017 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2271 sigset_t full, prev; 3018 if (sigfd < 0 && errno == EINVAL)
2272 sigfillset (&full); 3019 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2273 sigprocmask (SIG_SETMASK, &full, &prev);
2274#endif
2275 3020
2276 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3021 if (sigfd >= 0)
3022 {
3023 fd_intern (sigfd); /* doing it twice will not hurt */
2277 3024
2278#ifndef _WIN32 3025 sigemptyset (&sigfd_set);
2279 sigprocmask (SIG_SETMASK, &prev, 0); 3026
2280#endif 3027 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3028 ev_set_priority (&sigfd_w, EV_MAXPRI);
3029 ev_io_start (EV_A_ &sigfd_w);
3030 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3031 }
2281 } 3032 }
3033
3034 if (sigfd >= 0)
3035 {
3036 /* TODO: check .head */
3037 sigaddset (&sigfd_set, w->signum);
3038 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3039
3040 signalfd (sigfd, &sigfd_set, 0);
3041 }
3042#endif
2282 3043
2283 ev_start (EV_A_ (W)w, 1); 3044 ev_start (EV_A_ (W)w, 1);
2284 wlist_add (&signals [w->signum - 1].head, (WL)w); 3045 wlist_add (&signals [w->signum - 1].head, (WL)w);
2285 3046
2286 if (!((WL)w)->next) 3047 if (!((WL)w)->next)
3048# if EV_USE_SIGNALFD
3049 if (sigfd < 0) /*TODO*/
3050# endif
2287 { 3051 {
2288#if _WIN32 3052# ifdef _WIN32
3053 evpipe_init (EV_A);
3054
2289 signal (w->signum, ev_sighandler); 3055 signal (w->signum, ev_sighandler);
2290#else 3056# else
2291 struct sigaction sa; 3057 struct sigaction sa;
3058
3059 evpipe_init (EV_A);
3060
2292 sa.sa_handler = ev_sighandler; 3061 sa.sa_handler = ev_sighandler;
2293 sigfillset (&sa.sa_mask); 3062 sigfillset (&sa.sa_mask);
2294 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3063 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2295 sigaction (w->signum, &sa, 0); 3064 sigaction (w->signum, &sa, 0);
3065
3066 if (origflags & EVFLAG_NOSIGMASK)
3067 {
3068 sigemptyset (&sa.sa_mask);
3069 sigaddset (&sa.sa_mask, w->signum);
3070 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3071 }
2296#endif 3072#endif
2297 } 3073 }
2298 3074
2299 EV_FREQUENT_CHECK; 3075 EV_FREQUENT_CHECK;
2300} 3076}
2301 3077
2302void noinline 3078void noinline
… …
2310 3086
2311 wlist_del (&signals [w->signum - 1].head, (WL)w); 3087 wlist_del (&signals [w->signum - 1].head, (WL)w);
2312 ev_stop (EV_A_ (W)w); 3088 ev_stop (EV_A_ (W)w);
2313 3089
2314 if (!signals [w->signum - 1].head) 3090 if (!signals [w->signum - 1].head)
3091 {
3092#if EV_MULTIPLICITY
3093 signals [w->signum - 1].loop = 0; /* unattach from signal */
3094#endif
3095#if EV_USE_SIGNALFD
3096 if (sigfd >= 0)
3097 {
3098 sigset_t ss;
3099
3100 sigemptyset (&ss);
3101 sigaddset (&ss, w->signum);
3102 sigdelset (&sigfd_set, w->signum);
3103
3104 signalfd (sigfd, &sigfd_set, 0);
3105 sigprocmask (SIG_UNBLOCK, &ss, 0);
3106 }
3107 else
3108#endif
2315 signal (w->signum, SIG_DFL); 3109 signal (w->signum, SIG_DFL);
3110 }
2316 3111
2317 EV_FREQUENT_CHECK; 3112 EV_FREQUENT_CHECK;
2318} 3113}
3114
3115#endif
3116
3117#if EV_CHILD_ENABLE
2319 3118
2320void 3119void
2321ev_child_start (EV_P_ ev_child *w) 3120ev_child_start (EV_P_ ev_child *w)
2322{ 3121{
2323#if EV_MULTIPLICITY 3122#if EV_MULTIPLICITY
2324 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3123 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2325#endif 3124#endif
2326 if (expect_false (ev_is_active (w))) 3125 if (expect_false (ev_is_active (w)))
2327 return; 3126 return;
2328 3127
2329 EV_FREQUENT_CHECK; 3128 EV_FREQUENT_CHECK;
2330 3129
2331 ev_start (EV_A_ (W)w, 1); 3130 ev_start (EV_A_ (W)w, 1);
2332 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3131 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2333 3132
2334 EV_FREQUENT_CHECK; 3133 EV_FREQUENT_CHECK;
2335} 3134}
2336 3135
2337void 3136void
… …
2341 if (expect_false (!ev_is_active (w))) 3140 if (expect_false (!ev_is_active (w)))
2342 return; 3141 return;
2343 3142
2344 EV_FREQUENT_CHECK; 3143 EV_FREQUENT_CHECK;
2345 3144
2346 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3145 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2347 ev_stop (EV_A_ (W)w); 3146 ev_stop (EV_A_ (W)w);
2348 3147
2349 EV_FREQUENT_CHECK; 3148 EV_FREQUENT_CHECK;
2350} 3149}
3150
3151#endif
2351 3152
2352#if EV_STAT_ENABLE 3153#if EV_STAT_ENABLE
2353 3154
2354# ifdef _WIN32 3155# ifdef _WIN32
2355# undef lstat 3156# undef lstat
2356# define lstat(a,b) _stati64 (a,b) 3157# define lstat(a,b) _stati64 (a,b)
2357# endif 3158# endif
2358 3159
2359#define DEF_STAT_INTERVAL 5.0074891 3160#define DEF_STAT_INTERVAL 5.0074891
3161#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2360#define MIN_STAT_INTERVAL 0.1074891 3162#define MIN_STAT_INTERVAL 0.1074891
2361 3163
2362static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3164static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2363 3165
2364#if EV_USE_INOTIFY 3166#if EV_USE_INOTIFY
2365# define EV_INOTIFY_BUFSIZE 8192 3167
3168/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3169# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2366 3170
2367static void noinline 3171static void noinline
2368infy_add (EV_P_ ev_stat *w) 3172infy_add (EV_P_ ev_stat *w)
2369{ 3173{
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); 3174 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 3175
2372 if (w->wd < 0) 3176 if (w->wd >= 0)
3177 {
3178 struct statfs sfs;
3179
3180 /* now local changes will be tracked by inotify, but remote changes won't */
3181 /* unless the filesystem is known to be local, we therefore still poll */
3182 /* also do poll on <2.6.25, but with normal frequency */
3183
3184 if (!fs_2625)
3185 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3186 else if (!statfs (w->path, &sfs)
3187 && (sfs.f_type == 0x1373 /* devfs */
3188 || sfs.f_type == 0xEF53 /* ext2/3 */
3189 || sfs.f_type == 0x3153464a /* jfs */
3190 || sfs.f_type == 0x52654973 /* reiser3 */
3191 || sfs.f_type == 0x01021994 /* tempfs */
3192 || sfs.f_type == 0x58465342 /* xfs */))
3193 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3194 else
3195 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2373 { 3196 }
2374 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3197 else
3198 {
3199 /* can't use inotify, continue to stat */
3200 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2375 3201
2376 /* monitor some parent directory for speedup hints */ 3202 /* if path is not there, monitor some parent directory for speedup hints */
2377 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3203 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2378 /* but an efficiency issue only */ 3204 /* but an efficiency issue only */
2379 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3205 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2380 { 3206 {
2381 char path [4096]; 3207 char path [4096];
2382 strcpy (path, w->path); 3208 strcpy (path, w->path);
… …
2386 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3212 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2387 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3213 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2388 3214
2389 char *pend = strrchr (path, '/'); 3215 char *pend = strrchr (path, '/');
2390 3216
2391 if (!pend) 3217 if (!pend || pend == path)
2392 break; /* whoops, no '/', complain to your admin */ 3218 break;
2393 3219
2394 *pend = 0; 3220 *pend = 0;
2395 w->wd = inotify_add_watch (fs_fd, path, mask); 3221 w->wd = inotify_add_watch (fs_fd, path, mask);
2396 } 3222 }
2397 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3223 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2398 } 3224 }
2399 } 3225 }
2400 else
2401 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2402 3226
2403 if (w->wd >= 0) 3227 if (w->wd >= 0)
2404 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3228 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3229
3230 /* now re-arm timer, if required */
3231 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3232 ev_timer_again (EV_A_ &w->timer);
3233 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2405} 3234}
2406 3235
2407static void noinline 3236static void noinline
2408infy_del (EV_P_ ev_stat *w) 3237infy_del (EV_P_ ev_stat *w)
2409{ 3238{
… …
2412 3241
2413 if (wd < 0) 3242 if (wd < 0)
2414 return; 3243 return;
2415 3244
2416 w->wd = -2; 3245 w->wd = -2;
2417 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3246 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2418 wlist_del (&fs_hash [slot].head, (WL)w); 3247 wlist_del (&fs_hash [slot].head, (WL)w);
2419 3248
2420 /* remove this watcher, if others are watching it, they will rearm */ 3249 /* remove this watcher, if others are watching it, they will rearm */
2421 inotify_rm_watch (fs_fd, wd); 3250 inotify_rm_watch (fs_fd, wd);
2422} 3251}
2423 3252
2424static void noinline 3253static void noinline
2425infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3254infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2426{ 3255{
2427 if (slot < 0) 3256 if (slot < 0)
2428 /* overflow, need to check for all hahs slots */ 3257 /* overflow, need to check for all hash slots */
2429 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3258 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2430 infy_wd (EV_A_ slot, wd, ev); 3259 infy_wd (EV_A_ slot, wd, ev);
2431 else 3260 else
2432 { 3261 {
2433 WL w_; 3262 WL w_;
2434 3263
2435 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3264 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2436 { 3265 {
2437 ev_stat *w = (ev_stat *)w_; 3266 ev_stat *w = (ev_stat *)w_;
2438 w_ = w_->next; /* lets us remove this watcher and all before it */ 3267 w_ = w_->next; /* lets us remove this watcher and all before it */
2439 3268
2440 if (w->wd == wd || wd == -1) 3269 if (w->wd == wd || wd == -1)
2441 { 3270 {
2442 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3271 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2443 { 3272 {
3273 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2444 w->wd = -1; 3274 w->wd = -1;
2445 infy_add (EV_A_ w); /* re-add, no matter what */ 3275 infy_add (EV_A_ w); /* re-add, no matter what */
2446 } 3276 }
2447 3277
2448 stat_timer_cb (EV_A_ &w->timer, 0); 3278 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2453 3283
2454static void 3284static void
2455infy_cb (EV_P_ ev_io *w, int revents) 3285infy_cb (EV_P_ ev_io *w, int revents)
2456{ 3286{
2457 char buf [EV_INOTIFY_BUFSIZE]; 3287 char buf [EV_INOTIFY_BUFSIZE];
2458 struct inotify_event *ev = (struct inotify_event *)buf;
2459 int ofs; 3288 int ofs;
2460 int len = read (fs_fd, buf, sizeof (buf)); 3289 int len = read (fs_fd, buf, sizeof (buf));
2461 3290
2462 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3291 for (ofs = 0; ofs < len; )
3292 {
3293 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2463 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3294 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3295 ofs += sizeof (struct inotify_event) + ev->len;
3296 }
2464} 3297}
2465 3298
2466void inline_size 3299inline_size void ecb_cold
3300ev_check_2625 (EV_P)
3301{
3302 /* kernels < 2.6.25 are borked
3303 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3304 */
3305 if (ev_linux_version () < 0x020619)
3306 return;
3307
3308 fs_2625 = 1;
3309}
3310
3311inline_size int
3312infy_newfd (void)
3313{
3314#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3315 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3316 if (fd >= 0)
3317 return fd;
3318#endif
3319 return inotify_init ();
3320}
3321
3322inline_size void
2467infy_init (EV_P) 3323infy_init (EV_P)
2468{ 3324{
2469 if (fs_fd != -2) 3325 if (fs_fd != -2)
2470 return; 3326 return;
2471 3327
3328 fs_fd = -1;
3329
3330 ev_check_2625 (EV_A);
3331
2472 fs_fd = inotify_init (); 3332 fs_fd = infy_newfd ();
2473 3333
2474 if (fs_fd >= 0) 3334 if (fs_fd >= 0)
2475 { 3335 {
3336 fd_intern (fs_fd);
2476 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3337 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2477 ev_set_priority (&fs_w, EV_MAXPRI); 3338 ev_set_priority (&fs_w, EV_MAXPRI);
2478 ev_io_start (EV_A_ &fs_w); 3339 ev_io_start (EV_A_ &fs_w);
3340 ev_unref (EV_A);
2479 } 3341 }
2480} 3342}
2481 3343
2482void inline_size 3344inline_size void
2483infy_fork (EV_P) 3345infy_fork (EV_P)
2484{ 3346{
2485 int slot; 3347 int slot;
2486 3348
2487 if (fs_fd < 0) 3349 if (fs_fd < 0)
2488 return; 3350 return;
2489 3351
3352 ev_ref (EV_A);
3353 ev_io_stop (EV_A_ &fs_w);
2490 close (fs_fd); 3354 close (fs_fd);
2491 fs_fd = inotify_init (); 3355 fs_fd = infy_newfd ();
2492 3356
3357 if (fs_fd >= 0)
3358 {
3359 fd_intern (fs_fd);
3360 ev_io_set (&fs_w, fs_fd, EV_READ);
3361 ev_io_start (EV_A_ &fs_w);
3362 ev_unref (EV_A);
3363 }
3364
2493 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3365 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2494 { 3366 {
2495 WL w_ = fs_hash [slot].head; 3367 WL w_ = fs_hash [slot].head;
2496 fs_hash [slot].head = 0; 3368 fs_hash [slot].head = 0;
2497 3369
2498 while (w_) 3370 while (w_)
… …
2503 w->wd = -1; 3375 w->wd = -1;
2504 3376
2505 if (fs_fd >= 0) 3377 if (fs_fd >= 0)
2506 infy_add (EV_A_ w); /* re-add, no matter what */ 3378 infy_add (EV_A_ w); /* re-add, no matter what */
2507 else 3379 else
3380 {
3381 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3382 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2508 ev_timer_start (EV_A_ &w->timer); 3383 ev_timer_again (EV_A_ &w->timer);
3384 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3385 }
2509 } 3386 }
2510
2511 } 3387 }
2512} 3388}
2513 3389
3390#endif
3391
3392#ifdef _WIN32
3393# define EV_LSTAT(p,b) _stati64 (p, b)
3394#else
3395# define EV_LSTAT(p,b) lstat (p, b)
2514#endif 3396#endif
2515 3397
2516void 3398void
2517ev_stat_stat (EV_P_ ev_stat *w) 3399ev_stat_stat (EV_P_ ev_stat *w)
2518{ 3400{
… …
2525static void noinline 3407static void noinline
2526stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3408stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2527{ 3409{
2528 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3410 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2529 3411
2530 /* we copy this here each the time so that */ 3412 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); 3413 ev_stat_stat (EV_A_ w);
2534 3414
2535 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3415 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2536 if ( 3416 if (
2537 w->prev.st_dev != w->attr.st_dev 3417 prev.st_dev != w->attr.st_dev
2538 || w->prev.st_ino != w->attr.st_ino 3418 || prev.st_ino != w->attr.st_ino
2539 || w->prev.st_mode != w->attr.st_mode 3419 || prev.st_mode != w->attr.st_mode
2540 || w->prev.st_nlink != w->attr.st_nlink 3420 || prev.st_nlink != w->attr.st_nlink
2541 || w->prev.st_uid != w->attr.st_uid 3421 || prev.st_uid != w->attr.st_uid
2542 || w->prev.st_gid != w->attr.st_gid 3422 || prev.st_gid != w->attr.st_gid
2543 || w->prev.st_rdev != w->attr.st_rdev 3423 || prev.st_rdev != w->attr.st_rdev
2544 || w->prev.st_size != w->attr.st_size 3424 || prev.st_size != w->attr.st_size
2545 || w->prev.st_atime != w->attr.st_atime 3425 || prev.st_atime != w->attr.st_atime
2546 || w->prev.st_mtime != w->attr.st_mtime 3426 || prev.st_mtime != w->attr.st_mtime
2547 || w->prev.st_ctime != w->attr.st_ctime 3427 || prev.st_ctime != w->attr.st_ctime
2548 ) { 3428 ) {
3429 /* we only update w->prev on actual differences */
3430 /* in case we test more often than invoke the callback, */
3431 /* to ensure that prev is always different to attr */
3432 w->prev = prev;
3433
2549 #if EV_USE_INOTIFY 3434 #if EV_USE_INOTIFY
3435 if (fs_fd >= 0)
3436 {
2550 infy_del (EV_A_ w); 3437 infy_del (EV_A_ w);
2551 infy_add (EV_A_ w); 3438 infy_add (EV_A_ w);
2552 ev_stat_stat (EV_A_ w); /* avoid race... */ 3439 ev_stat_stat (EV_A_ w); /* avoid race... */
3440 }
2553 #endif 3441 #endif
2554 3442
2555 ev_feed_event (EV_A_ w, EV_STAT); 3443 ev_feed_event (EV_A_ w, EV_STAT);
2556 } 3444 }
2557} 3445}
… …
2560ev_stat_start (EV_P_ ev_stat *w) 3448ev_stat_start (EV_P_ ev_stat *w)
2561{ 3449{
2562 if (expect_false (ev_is_active (w))) 3450 if (expect_false (ev_is_active (w)))
2563 return; 3451 return;
2564 3452
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); 3453 ev_stat_stat (EV_A_ w);
2570 3454
3455 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2571 if (w->interval < MIN_STAT_INTERVAL) 3456 w->interval = MIN_STAT_INTERVAL;
2572 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2573 3457
2574 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3458 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)); 3459 ev_set_priority (&w->timer, ev_priority (w));
2576 3460
2577#if EV_USE_INOTIFY 3461#if EV_USE_INOTIFY
2578 infy_init (EV_A); 3462 infy_init (EV_A);
2579 3463
2580 if (fs_fd >= 0) 3464 if (fs_fd >= 0)
2581 infy_add (EV_A_ w); 3465 infy_add (EV_A_ w);
2582 else 3466 else
2583#endif 3467#endif
3468 {
2584 ev_timer_start (EV_A_ &w->timer); 3469 ev_timer_again (EV_A_ &w->timer);
3470 ev_unref (EV_A);
3471 }
2585 3472
2586 ev_start (EV_A_ (W)w, 1); 3473 ev_start (EV_A_ (W)w, 1);
2587 3474
2588 EV_FREQUENT_CHECK; 3475 EV_FREQUENT_CHECK;
2589} 3476}
… …
2598 EV_FREQUENT_CHECK; 3485 EV_FREQUENT_CHECK;
2599 3486
2600#if EV_USE_INOTIFY 3487#if EV_USE_INOTIFY
2601 infy_del (EV_A_ w); 3488 infy_del (EV_A_ w);
2602#endif 3489#endif
3490
3491 if (ev_is_active (&w->timer))
3492 {
3493 ev_ref (EV_A);
2603 ev_timer_stop (EV_A_ &w->timer); 3494 ev_timer_stop (EV_A_ &w->timer);
3495 }
2604 3496
2605 ev_stop (EV_A_ (W)w); 3497 ev_stop (EV_A_ (W)w);
2606 3498
2607 EV_FREQUENT_CHECK; 3499 EV_FREQUENT_CHECK;
2608} 3500}
… …
2653 3545
2654 EV_FREQUENT_CHECK; 3546 EV_FREQUENT_CHECK;
2655} 3547}
2656#endif 3548#endif
2657 3549
3550#if EV_PREPARE_ENABLE
2658void 3551void
2659ev_prepare_start (EV_P_ ev_prepare *w) 3552ev_prepare_start (EV_P_ ev_prepare *w)
2660{ 3553{
2661 if (expect_false (ev_is_active (w))) 3554 if (expect_false (ev_is_active (w)))
2662 return; 3555 return;
… …
2688 3581
2689 ev_stop (EV_A_ (W)w); 3582 ev_stop (EV_A_ (W)w);
2690 3583
2691 EV_FREQUENT_CHECK; 3584 EV_FREQUENT_CHECK;
2692} 3585}
3586#endif
2693 3587
3588#if EV_CHECK_ENABLE
2694void 3589void
2695ev_check_start (EV_P_ ev_check *w) 3590ev_check_start (EV_P_ ev_check *w)
2696{ 3591{
2697 if (expect_false (ev_is_active (w))) 3592 if (expect_false (ev_is_active (w)))
2698 return; 3593 return;
… …
2724 3619
2725 ev_stop (EV_A_ (W)w); 3620 ev_stop (EV_A_ (W)w);
2726 3621
2727 EV_FREQUENT_CHECK; 3622 EV_FREQUENT_CHECK;
2728} 3623}
3624#endif
2729 3625
2730#if EV_EMBED_ENABLE 3626#if EV_EMBED_ENABLE
2731void noinline 3627void noinline
2732ev_embed_sweep (EV_P_ ev_embed *w) 3628ev_embed_sweep (EV_P_ ev_embed *w)
2733{ 3629{
2734 ev_loop (w->other, EVLOOP_NONBLOCK); 3630 ev_run (w->other, EVRUN_NOWAIT);
2735} 3631}
2736 3632
2737static void 3633static void
2738embed_io_cb (EV_P_ ev_io *io, int revents) 3634embed_io_cb (EV_P_ ev_io *io, int revents)
2739{ 3635{
2740 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3636 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2741 3637
2742 if (ev_cb (w)) 3638 if (ev_cb (w))
2743 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3639 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2744 else 3640 else
2745 ev_loop (w->other, EVLOOP_NONBLOCK); 3641 ev_run (w->other, EVRUN_NOWAIT);
2746} 3642}
2747 3643
2748static void 3644static void
2749embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3645embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2750{ 3646{
2751 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3647 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2752 3648
2753 { 3649 {
2754 struct ev_loop *loop = w->other; 3650 EV_P = w->other;
2755 3651
2756 while (fdchangecnt) 3652 while (fdchangecnt)
2757 { 3653 {
2758 fd_reify (EV_A); 3654 fd_reify (EV_A);
2759 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3655 ev_run (EV_A_ EVRUN_NOWAIT);
2760 } 3656 }
2761 } 3657 }
3658}
3659
3660static void
3661embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3662{
3663 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3664
3665 ev_embed_stop (EV_A_ w);
3666
3667 {
3668 EV_P = w->other;
3669
3670 ev_loop_fork (EV_A);
3671 ev_run (EV_A_ EVRUN_NOWAIT);
3672 }
3673
3674 ev_embed_start (EV_A_ w);
2762} 3675}
2763 3676
2764#if 0 3677#if 0
2765static void 3678static void
2766embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3679embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2774{ 3687{
2775 if (expect_false (ev_is_active (w))) 3688 if (expect_false (ev_is_active (w)))
2776 return; 3689 return;
2777 3690
2778 { 3691 {
2779 struct ev_loop *loop = w->other; 3692 EV_P = w->other;
2780 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3693 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); 3694 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2782 } 3695 }
2783 3696
2784 EV_FREQUENT_CHECK; 3697 EV_FREQUENT_CHECK;
2785 3698
… …
2788 3701
2789 ev_prepare_init (&w->prepare, embed_prepare_cb); 3702 ev_prepare_init (&w->prepare, embed_prepare_cb);
2790 ev_set_priority (&w->prepare, EV_MINPRI); 3703 ev_set_priority (&w->prepare, EV_MINPRI);
2791 ev_prepare_start (EV_A_ &w->prepare); 3704 ev_prepare_start (EV_A_ &w->prepare);
2792 3705
3706 ev_fork_init (&w->fork, embed_fork_cb);
3707 ev_fork_start (EV_A_ &w->fork);
3708
2793 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3709 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2794 3710
2795 ev_start (EV_A_ (W)w, 1); 3711 ev_start (EV_A_ (W)w, 1);
2796 3712
2797 EV_FREQUENT_CHECK; 3713 EV_FREQUENT_CHECK;
… …
2804 if (expect_false (!ev_is_active (w))) 3720 if (expect_false (!ev_is_active (w)))
2805 return; 3721 return;
2806 3722
2807 EV_FREQUENT_CHECK; 3723 EV_FREQUENT_CHECK;
2808 3724
2809 ev_io_stop (EV_A_ &w->io); 3725 ev_io_stop (EV_A_ &w->io);
2810 ev_prepare_stop (EV_A_ &w->prepare); 3726 ev_prepare_stop (EV_A_ &w->prepare);
3727 ev_fork_stop (EV_A_ &w->fork);
2811 3728
2812 ev_stop (EV_A_ (W)w); 3729 ev_stop (EV_A_ (W)w);
2813 3730
2814 EV_FREQUENT_CHECK; 3731 EV_FREQUENT_CHECK;
2815} 3732}
… …
2851 3768
2852 EV_FREQUENT_CHECK; 3769 EV_FREQUENT_CHECK;
2853} 3770}
2854#endif 3771#endif
2855 3772
3773#if EV_CLEANUP_ENABLE
3774void
3775ev_cleanup_start (EV_P_ ev_cleanup *w)
3776{
3777 if (expect_false (ev_is_active (w)))
3778 return;
3779
3780 EV_FREQUENT_CHECK;
3781
3782 ev_start (EV_A_ (W)w, ++cleanupcnt);
3783 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3784 cleanups [cleanupcnt - 1] = w;
3785
3786 /* cleanup watchers should never keep a refcount on the loop */
3787 ev_unref (EV_A);
3788 EV_FREQUENT_CHECK;
3789}
3790
3791void
3792ev_cleanup_stop (EV_P_ ev_cleanup *w)
3793{
3794 clear_pending (EV_A_ (W)w);
3795 if (expect_false (!ev_is_active (w)))
3796 return;
3797
3798 EV_FREQUENT_CHECK;
3799 ev_ref (EV_A);
3800
3801 {
3802 int active = ev_active (w);
3803
3804 cleanups [active - 1] = cleanups [--cleanupcnt];
3805 ev_active (cleanups [active - 1]) = active;
3806 }
3807
3808 ev_stop (EV_A_ (W)w);
3809
3810 EV_FREQUENT_CHECK;
3811}
3812#endif
3813
2856#if EV_ASYNC_ENABLE 3814#if EV_ASYNC_ENABLE
2857void 3815void
2858ev_async_start (EV_P_ ev_async *w) 3816ev_async_start (EV_P_ ev_async *w)
2859{ 3817{
2860 if (expect_false (ev_is_active (w))) 3818 if (expect_false (ev_is_active (w)))
2861 return; 3819 return;
2862 3820
3821 w->sent = 0;
3822
2863 evpipe_init (EV_A); 3823 evpipe_init (EV_A);
2864 3824
2865 EV_FREQUENT_CHECK; 3825 EV_FREQUENT_CHECK;
2866 3826
2867 ev_start (EV_A_ (W)w, ++asynccnt); 3827 ev_start (EV_A_ (W)w, ++asynccnt);
… …
2894 3854
2895void 3855void
2896ev_async_send (EV_P_ ev_async *w) 3856ev_async_send (EV_P_ ev_async *w)
2897{ 3857{
2898 w->sent = 1; 3858 w->sent = 1;
2899 evpipe_write (EV_A_ &gotasync); 3859 evpipe_write (EV_A_ &async_pending);
2900} 3860}
2901#endif 3861#endif
2902 3862
2903/*****************************************************************************/ 3863/*****************************************************************************/
2904 3864
… …
2914once_cb (EV_P_ struct ev_once *once, int revents) 3874once_cb (EV_P_ struct ev_once *once, int revents)
2915{ 3875{
2916 void (*cb)(int revents, void *arg) = once->cb; 3876 void (*cb)(int revents, void *arg) = once->cb;
2917 void *arg = once->arg; 3877 void *arg = once->arg;
2918 3878
2919 ev_io_stop (EV_A_ &once->io); 3879 ev_io_stop (EV_A_ &once->io);
2920 ev_timer_stop (EV_A_ &once->to); 3880 ev_timer_stop (EV_A_ &once->to);
2921 ev_free (once); 3881 ev_free (once);
2922 3882
2923 cb (revents, arg); 3883 cb (revents, arg);
2924} 3884}
2925 3885
2926static void 3886static void
2927once_cb_io (EV_P_ ev_io *w, int revents) 3887once_cb_io (EV_P_ ev_io *w, int revents)
2928{ 3888{
2929 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3889 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3890
3891 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2930} 3892}
2931 3893
2932static void 3894static void
2933once_cb_to (EV_P_ ev_timer *w, int revents) 3895once_cb_to (EV_P_ ev_timer *w, int revents)
2934{ 3896{
2935 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3897 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3898
3899 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2936} 3900}
2937 3901
2938void 3902void
2939ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3903ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2940{ 3904{
2941 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3905 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2942 3906
2943 if (expect_false (!once)) 3907 if (expect_false (!once))
2944 { 3908 {
2945 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3909 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2946 return; 3910 return;
2947 } 3911 }
2948 3912
2949 once->cb = cb; 3913 once->cb = cb;
2950 once->arg = arg; 3914 once->arg = arg;
… …
2962 ev_timer_set (&once->to, timeout, 0.); 3926 ev_timer_set (&once->to, timeout, 0.);
2963 ev_timer_start (EV_A_ &once->to); 3927 ev_timer_start (EV_A_ &once->to);
2964 } 3928 }
2965} 3929}
2966 3930
3931/*****************************************************************************/
3932
3933#if EV_WALK_ENABLE
3934void ecb_cold
3935ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3936{
3937 int i, j;
3938 ev_watcher_list *wl, *wn;
3939
3940 if (types & (EV_IO | EV_EMBED))
3941 for (i = 0; i < anfdmax; ++i)
3942 for (wl = anfds [i].head; wl; )
3943 {
3944 wn = wl->next;
3945
3946#if EV_EMBED_ENABLE
3947 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3948 {
3949 if (types & EV_EMBED)
3950 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3951 }
3952 else
3953#endif
3954#if EV_USE_INOTIFY
3955 if (ev_cb ((ev_io *)wl) == infy_cb)
3956 ;
3957 else
3958#endif
3959 if ((ev_io *)wl != &pipe_w)
3960 if (types & EV_IO)
3961 cb (EV_A_ EV_IO, wl);
3962
3963 wl = wn;
3964 }
3965
3966 if (types & (EV_TIMER | EV_STAT))
3967 for (i = timercnt + HEAP0; i-- > HEAP0; )
3968#if EV_STAT_ENABLE
3969 /*TODO: timer is not always active*/
3970 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3971 {
3972 if (types & EV_STAT)
3973 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3974 }
3975 else
3976#endif
3977 if (types & EV_TIMER)
3978 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3979
3980#if EV_PERIODIC_ENABLE
3981 if (types & EV_PERIODIC)
3982 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3983 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3984#endif
3985
3986#if EV_IDLE_ENABLE
3987 if (types & EV_IDLE)
3988 for (j = NUMPRI; i--; )
3989 for (i = idlecnt [j]; i--; )
3990 cb (EV_A_ EV_IDLE, idles [j][i]);
3991#endif
3992
3993#if EV_FORK_ENABLE
3994 if (types & EV_FORK)
3995 for (i = forkcnt; i--; )
3996 if (ev_cb (forks [i]) != embed_fork_cb)
3997 cb (EV_A_ EV_FORK, forks [i]);
3998#endif
3999
4000#if EV_ASYNC_ENABLE
4001 if (types & EV_ASYNC)
4002 for (i = asynccnt; i--; )
4003 cb (EV_A_ EV_ASYNC, asyncs [i]);
4004#endif
4005
4006#if EV_PREPARE_ENABLE
4007 if (types & EV_PREPARE)
4008 for (i = preparecnt; i--; )
4009# if EV_EMBED_ENABLE
4010 if (ev_cb (prepares [i]) != embed_prepare_cb)
4011# endif
4012 cb (EV_A_ EV_PREPARE, prepares [i]);
4013#endif
4014
4015#if EV_CHECK_ENABLE
4016 if (types & EV_CHECK)
4017 for (i = checkcnt; i--; )
4018 cb (EV_A_ EV_CHECK, checks [i]);
4019#endif
4020
4021#if EV_SIGNAL_ENABLE
4022 if (types & EV_SIGNAL)
4023 for (i = 0; i < EV_NSIG - 1; ++i)
4024 for (wl = signals [i].head; wl; )
4025 {
4026 wn = wl->next;
4027 cb (EV_A_ EV_SIGNAL, wl);
4028 wl = wn;
4029 }
4030#endif
4031
4032#if EV_CHILD_ENABLE
4033 if (types & EV_CHILD)
4034 for (i = (EV_PID_HASHSIZE); i--; )
4035 for (wl = childs [i]; wl; )
4036 {
4037 wn = wl->next;
4038 cb (EV_A_ EV_CHILD, wl);
4039 wl = wn;
4040 }
4041#endif
4042/* EV_STAT 0x00001000 /* stat data changed */
4043/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4044}
4045#endif
4046
2967#if EV_MULTIPLICITY 4047#if EV_MULTIPLICITY
2968 #include "ev_wrap.h" 4048 #include "ev_wrap.h"
2969#endif 4049#endif
2970 4050
2971#ifdef __cplusplus 4051EV_CPP(})
2972}
2973#endif
2974 4052

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