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Comparing libev/ev.c (file contents):
Revision 1.249 by root, Wed May 21 23:30:52 2008 UTC vs.
Revision 1.387 by root, Wed Jul 20 01:04:43 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
130# endif 154# endif
131 155
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
132#endif 163# endif
164
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
237# endif 323# endif
238#endif 324#endif
239 325
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
331# endif
332#endif
333
240#if 0 /* debugging */ 334#if 0 /* debugging */
241# define EV_VERIFY 1 335# 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
340#ifndef EV_VERIFY
341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
342#endif
343
246#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
247# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
248#endif 346#endif
249 347
250#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
251# 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
252#endif 364#endif
253 365
254/* 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
255 373
256#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
257# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
258# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
259#endif 377#endif
… …
267# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
268# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
269#endif 387#endif
270 388
271#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
272# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
273# include <sys/select.h> 392# include <sys/select.h>
274# endif 393# endif
275#endif 394#endif
276 395
277#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
397# include <sys/statfs.h>
278# 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
279#endif 404#endif
280 405
281#if EV_SELECT_IS_WINSOCKET 406#if EV_SELECT_IS_WINSOCKET
282# include <winsock.h> 407# include <winsock.h>
283#endif 408#endif
284 409
285#if EV_USE_EVENTFD 410#if EV_USE_EVENTFD
286/* 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 */
287# include <stdint.h> 412# include <stdint.h>
288# ifdef __cplusplus 413# ifndef EFD_NONBLOCK
289extern "C" { 414# define EFD_NONBLOCK O_NONBLOCK
290# endif 415# endif
291int eventfd (unsigned int initval, int flags); 416# ifndef EFD_CLOEXEC
292# ifdef __cplusplus 417# ifdef O_CLOEXEC
293} 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
294# 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};
295#endif 446#endif
296 447
297/**/ 448/**/
298 449
299/* EV_VERIFY: enable internal consistency checks
300 * undefined or zero: no verification done or available
301 * 1 or higher: ev_loop_verify function available
302 * 2 or higher: ev_loop_verify is called frequently
303 */
304#if EV_VERIFY >= 1 450#if EV_VERIFY >= 3
305# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
306#else 452#else
307# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
308#endif 454#endif
309 455
310/* 456/*
311 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
312 * It is added to ev_rt_now when scheduling periodics
313 * to ensure progress, time-wise, even when rounding
314 * errors are against us.
315 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
316 * Better solutions welcome.
317 */ 459 */
318#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 */
319 462
320#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) */
321#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) */
322/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
323 465
324#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)
325# 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)
326# 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
327#else 493#else
328# define expect(expr,value) (expr) 494 #define ecb_inline static
329# define noinline
330# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
331# define inline
332# endif 495#endif
496
497#ifndef ECB_MEMORY_FENCE
498 #if ECB_GCC_VERSION(2,5)
499 #if __x86
500 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
501 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
502 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
503 #elif __amd64
504 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
505 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
506 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence")
507 #endif
333#endif 508 #endif
509#endif
334 510
511#ifndef ECB_MEMORY_FENCE
512 #if ECB_GCC_VERSION(4,4)
513 #define ECB_MEMORY_FENCE __sync_synchronize ()
514 #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); })
515 #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); })
516 #elif defined(_WIN32) && defined(MemoryBarrier)
517 #define ECB_MEMORY_FENCE MemoryBarrier ()
518 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
519 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
520 #endif
521#endif
522
523#ifndef ECB_MEMORY_FENCE
524 #include <pthread.h>
525
526 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
527 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
528 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
529 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
530#endif
531
532#if ECB_GCC_VERSION(3,1)
533 #define ecb_attribute(attrlist) __attribute__(attrlist)
534 #define ecb_is_constant(expr) __builtin_constant_p (expr)
535 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
536 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
537#else
538 #define ecb_attribute(attrlist)
539 #define ecb_is_constant(expr) 0
540 #define ecb_expect(expr,value) (expr)
541 #define ecb_prefetch(addr,rw,locality)
542#endif
543
544#define ecb_noinline ecb_attribute ((__noinline__))
545#define ecb_noreturn ecb_attribute ((__noreturn__))
546#define ecb_unused ecb_attribute ((__unused__))
547#define ecb_const ecb_attribute ((__const__))
548#define ecb_pure ecb_attribute ((__pure__))
549
550#if ECB_GCC_VERSION(4,3)
551 #define ecb_artificial ecb_attribute ((__artificial__))
552 #define ecb_hot ecb_attribute ((__hot__))
553 #define ecb_cold ecb_attribute ((__cold__))
554#else
555 #define ecb_artificial
556 #define ecb_hot
557 #define ecb_cold
558#endif
559
560/* put around conditional expressions if you are very sure that the */
561/* expression is mostly true or mostly false. note that these return */
562/* booleans, not the expression. */
335#define expect_false(expr) expect ((expr) != 0, 0) 563#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
336#define expect_true(expr) expect ((expr) != 0, 1) 564#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
565/* ecb.h end */
566
567#define expect_false(cond) ecb_expect_false (cond)
568#define expect_true(cond) ecb_expect_true (cond)
569#define noinline ecb_noinline
570
337#define inline_size static inline 571#define inline_size ecb_inline
338 572
339#if EV_MINIMAL 573#if EV_FEATURE_CODE
574# define inline_speed ecb_inline
575#else
340# define inline_speed static noinline 576# define inline_speed static noinline
577#endif
578
579#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
580
581#if EV_MINPRI == EV_MAXPRI
582# define ABSPRI(w) (((W)w), 0)
341#else 583#else
342# define inline_speed static inline
343#endif
344
345#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
346#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 584# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
585#endif
347 586
348#define EMPTY /* required for microsofts broken pseudo-c compiler */ 587#define EMPTY /* required for microsofts broken pseudo-c compiler */
349#define EMPTY2(a,b) /* used to suppress some warnings */ 588#define EMPTY2(a,b) /* used to suppress some warnings */
350 589
351typedef ev_watcher *W; 590typedef ev_watcher *W;
… …
353typedef ev_watcher_time *WT; 592typedef ev_watcher_time *WT;
354 593
355#define ev_active(w) ((W)(w))->active 594#define ev_active(w) ((W)(w))->active
356#define ev_at(w) ((WT)(w))->at 595#define ev_at(w) ((WT)(w))->at
357 596
597#if EV_USE_REALTIME
598/* sig_atomic_t is used to avoid per-thread variables or locking but still */
599/* giving it a reasonably high chance of working on typical architectures */
600static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
601#endif
602
358#if EV_USE_MONOTONIC 603#if EV_USE_MONOTONIC
359/* sig_atomic_t is used to avoid per-thread variables or locking but still */
360/* giving it a reasonably high chance of working on typical architetcures */
361static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 604static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
605#endif
606
607#ifndef EV_FD_TO_WIN32_HANDLE
608# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
609#endif
610#ifndef EV_WIN32_HANDLE_TO_FD
611# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
612#endif
613#ifndef EV_WIN32_CLOSE_FD
614# define EV_WIN32_CLOSE_FD(fd) close (fd)
362#endif 615#endif
363 616
364#ifdef _WIN32 617#ifdef _WIN32
365# include "ev_win32.c" 618# include "ev_win32.c"
366#endif 619#endif
367 620
368/*****************************************************************************/ 621/*****************************************************************************/
369 622
623/* define a suitable floor function (only used by periodics atm) */
624
625#if EV_USE_FLOOR
626# include <math.h>
627# define ev_floor(v) floor (v)
628#else
629
630#include <float.h>
631
632/* a floor() replacement function, should be independent of ev_tstamp type */
633static ev_tstamp noinline
634ev_floor (ev_tstamp v)
635{
636 /* the choice of shift factor is not terribly important */
637#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
638 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
639#else
640 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
641#endif
642
643 /* argument too large for an unsigned long? */
644 if (expect_false (v >= shift))
645 {
646 ev_tstamp f;
647
648 if (v == v - 1.)
649 return v; /* very large number */
650
651 f = shift * ev_floor (v * (1. / shift));
652 return f + ev_floor (v - f);
653 }
654
655 /* special treatment for negative args? */
656 if (expect_false (v < 0.))
657 {
658 ev_tstamp f = -ev_floor (-v);
659
660 return f - (f == v ? 0 : 1);
661 }
662
663 /* fits into an unsigned long */
664 return (unsigned long)v;
665}
666
667#endif
668
669/*****************************************************************************/
670
671#ifdef __linux
672# include <sys/utsname.h>
673#endif
674
675static unsigned int noinline ecb_cold
676ev_linux_version (void)
677{
678#ifdef __linux
679 unsigned int v = 0;
680 struct utsname buf;
681 int i;
682 char *p = buf.release;
683
684 if (uname (&buf))
685 return 0;
686
687 for (i = 3+1; --i; )
688 {
689 unsigned int c = 0;
690
691 for (;;)
692 {
693 if (*p >= '0' && *p <= '9')
694 c = c * 10 + *p++ - '0';
695 else
696 {
697 p += *p == '.';
698 break;
699 }
700 }
701
702 v = (v << 8) | c;
703 }
704
705 return v;
706#else
707 return 0;
708#endif
709}
710
711/*****************************************************************************/
712
713#if EV_AVOID_STDIO
714static void noinline ecb_cold
715ev_printerr (const char *msg)
716{
717 write (STDERR_FILENO, msg, strlen (msg));
718}
719#endif
720
370static void (*syserr_cb)(const char *msg); 721static void (*syserr_cb)(const char *msg);
371 722
372void 723void ecb_cold
373ev_set_syserr_cb (void (*cb)(const char *msg)) 724ev_set_syserr_cb (void (*cb)(const char *msg))
374{ 725{
375 syserr_cb = cb; 726 syserr_cb = cb;
376} 727}
377 728
378static void noinline 729static void noinline ecb_cold
379syserr (const char *msg) 730ev_syserr (const char *msg)
380{ 731{
381 if (!msg) 732 if (!msg)
382 msg = "(libev) system error"; 733 msg = "(libev) system error";
383 734
384 if (syserr_cb) 735 if (syserr_cb)
385 syserr_cb (msg); 736 syserr_cb (msg);
386 else 737 else
387 { 738 {
739#if EV_AVOID_STDIO
740 ev_printerr (msg);
741 ev_printerr (": ");
742 ev_printerr (strerror (errno));
743 ev_printerr ("\n");
744#else
388 perror (msg); 745 perror (msg);
746#endif
389 abort (); 747 abort ();
390 } 748 }
391} 749}
392 750
393static void * 751static void *
394ev_realloc_emul (void *ptr, long size) 752ev_realloc_emul (void *ptr, long size)
395{ 753{
754#if __GLIBC__
755 return realloc (ptr, size);
756#else
396 /* some systems, notably openbsd and darwin, fail to properly 757 /* some systems, notably openbsd and darwin, fail to properly
397 * implement realloc (x, 0) (as required by both ansi c-98 and 758 * implement realloc (x, 0) (as required by both ansi c-89 and
398 * the single unix specification, so work around them here. 759 * the single unix specification, so work around them here.
399 */ 760 */
400 761
401 if (size) 762 if (size)
402 return realloc (ptr, size); 763 return realloc (ptr, size);
403 764
404 free (ptr); 765 free (ptr);
405 return 0; 766 return 0;
767#endif
406} 768}
407 769
408static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 770static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
409 771
410void 772void ecb_cold
411ev_set_allocator (void *(*cb)(void *ptr, long size)) 773ev_set_allocator (void *(*cb)(void *ptr, long size))
412{ 774{
413 alloc = cb; 775 alloc = cb;
414} 776}
415 777
… …
418{ 780{
419 ptr = alloc (ptr, size); 781 ptr = alloc (ptr, size);
420 782
421 if (!ptr && size) 783 if (!ptr && size)
422 { 784 {
785#if EV_AVOID_STDIO
786 ev_printerr ("(libev) memory allocation failed, aborting.\n");
787#else
423 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 788 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
789#endif
424 abort (); 790 abort ();
425 } 791 }
426 792
427 return ptr; 793 return ptr;
428} 794}
… …
430#define ev_malloc(size) ev_realloc (0, (size)) 796#define ev_malloc(size) ev_realloc (0, (size))
431#define ev_free(ptr) ev_realloc ((ptr), 0) 797#define ev_free(ptr) ev_realloc ((ptr), 0)
432 798
433/*****************************************************************************/ 799/*****************************************************************************/
434 800
801/* set in reify when reification needed */
802#define EV_ANFD_REIFY 1
803
804/* file descriptor info structure */
435typedef struct 805typedef struct
436{ 806{
437 WL head; 807 WL head;
438 unsigned char events; 808 unsigned char events; /* the events watched for */
809 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
810 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
439 unsigned char reify; 811 unsigned char unused;
812#if EV_USE_EPOLL
813 unsigned int egen; /* generation counter to counter epoll bugs */
814#endif
440#if EV_SELECT_IS_WINSOCKET 815#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
441 SOCKET handle; 816 SOCKET handle;
442#endif 817#endif
818#if EV_USE_IOCP
819 OVERLAPPED or, ow;
820#endif
443} ANFD; 821} ANFD;
444 822
823/* stores the pending event set for a given watcher */
445typedef struct 824typedef struct
446{ 825{
447 W w; 826 W w;
448 int events; 827 int events; /* the pending event set for the given watcher */
449} ANPENDING; 828} ANPENDING;
450 829
451#if EV_USE_INOTIFY 830#if EV_USE_INOTIFY
452/* hash table entry per inotify-id */ 831/* hash table entry per inotify-id */
453typedef struct 832typedef struct
… …
456} ANFS; 835} ANFS;
457#endif 836#endif
458 837
459/* Heap Entry */ 838/* Heap Entry */
460#if EV_HEAP_CACHE_AT 839#if EV_HEAP_CACHE_AT
840 /* a heap element */
461 typedef struct { 841 typedef struct {
462 ev_tstamp at; 842 ev_tstamp at;
463 WT w; 843 WT w;
464 } ANHE; 844 } ANHE;
465 845
466 #define ANHE_w(he) (he).w /* access watcher, read-write */ 846 #define ANHE_w(he) (he).w /* access watcher, read-write */
467 #define ANHE_at(he) (he).at /* access cached at, read-only */ 847 #define ANHE_at(he) (he).at /* access cached at, read-only */
468 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 848 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
469#else 849#else
850 /* a heap element */
470 typedef WT ANHE; 851 typedef WT ANHE;
471 852
472 #define ANHE_w(he) (he) 853 #define ANHE_w(he) (he)
473 #define ANHE_at(he) (he)->at 854 #define ANHE_at(he) (he)->at
474 #define ANHE_at_cache(he) 855 #define ANHE_at_cache(he)
… …
498 879
499 static int ev_default_loop_ptr; 880 static int ev_default_loop_ptr;
500 881
501#endif 882#endif
502 883
884#if EV_FEATURE_API
885# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
886# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
887# define EV_INVOKE_PENDING invoke_cb (EV_A)
888#else
889# define EV_RELEASE_CB (void)0
890# define EV_ACQUIRE_CB (void)0
891# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
892#endif
893
894#define EVBREAK_RECURSE 0x80
895
503/*****************************************************************************/ 896/*****************************************************************************/
504 897
898#ifndef EV_HAVE_EV_TIME
505ev_tstamp 899ev_tstamp
506ev_time (void) 900ev_time (void)
507{ 901{
508#if EV_USE_REALTIME 902#if EV_USE_REALTIME
903 if (expect_true (have_realtime))
904 {
509 struct timespec ts; 905 struct timespec ts;
510 clock_gettime (CLOCK_REALTIME, &ts); 906 clock_gettime (CLOCK_REALTIME, &ts);
511 return ts.tv_sec + ts.tv_nsec * 1e-9; 907 return ts.tv_sec + ts.tv_nsec * 1e-9;
512#else 908 }
909#endif
910
513 struct timeval tv; 911 struct timeval tv;
514 gettimeofday (&tv, 0); 912 gettimeofday (&tv, 0);
515 return tv.tv_sec + tv.tv_usec * 1e-6; 913 return tv.tv_sec + tv.tv_usec * 1e-6;
516#endif
517} 914}
915#endif
518 916
519ev_tstamp inline_size 917inline_size ev_tstamp
520get_clock (void) 918get_clock (void)
521{ 919{
522#if EV_USE_MONOTONIC 920#if EV_USE_MONOTONIC
523 if (expect_true (have_monotonic)) 921 if (expect_true (have_monotonic))
524 { 922 {
… …
545 if (delay > 0.) 943 if (delay > 0.)
546 { 944 {
547#if EV_USE_NANOSLEEP 945#if EV_USE_NANOSLEEP
548 struct timespec ts; 946 struct timespec ts;
549 947
550 ts.tv_sec = (time_t)delay; 948 EV_TS_SET (ts, delay);
551 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
552
553 nanosleep (&ts, 0); 949 nanosleep (&ts, 0);
554#elif defined(_WIN32) 950#elif defined(_WIN32)
555 Sleep ((unsigned long)(delay * 1e3)); 951 Sleep ((unsigned long)(delay * 1e3));
556#else 952#else
557 struct timeval tv; 953 struct timeval tv;
558 954
559 tv.tv_sec = (time_t)delay; 955 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
560 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 956 /* something not guaranteed by newer posix versions, but guaranteed */
561 957 /* by older ones */
958 EV_TV_SET (tv, delay);
562 select (0, 0, 0, 0, &tv); 959 select (0, 0, 0, 0, &tv);
563#endif 960#endif
564 } 961 }
565} 962}
566 963
567/*****************************************************************************/ 964/*****************************************************************************/
568 965
569#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 966#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
570 967
571int inline_size 968/* find a suitable new size for the given array, */
969/* hopefully by rounding to a nice-to-malloc size */
970inline_size int
572array_nextsize (int elem, int cur, int cnt) 971array_nextsize (int elem, int cur, int cnt)
573{ 972{
574 int ncur = cur + 1; 973 int ncur = cur + 1;
575 974
576 do 975 do
… …
587 } 986 }
588 987
589 return ncur; 988 return ncur;
590} 989}
591 990
592static noinline void * 991static void * noinline ecb_cold
593array_realloc (int elem, void *base, int *cur, int cnt) 992array_realloc (int elem, void *base, int *cur, int cnt)
594{ 993{
595 *cur = array_nextsize (elem, *cur, cnt); 994 *cur = array_nextsize (elem, *cur, cnt);
596 return ev_realloc (base, elem * *cur); 995 return ev_realloc (base, elem * *cur);
597} 996}
997
998#define array_init_zero(base,count) \
999 memset ((void *)(base), 0, sizeof (*(base)) * (count))
598 1000
599#define array_needsize(type,base,cur,cnt,init) \ 1001#define array_needsize(type,base,cur,cnt,init) \
600 if (expect_false ((cnt) > (cur))) \ 1002 if (expect_false ((cnt) > (cur))) \
601 { \ 1003 { \
602 int ocur_ = (cur); \ 1004 int ecb_unused ocur_ = (cur); \
603 (base) = (type *)array_realloc \ 1005 (base) = (type *)array_realloc \
604 (sizeof (type), (base), &(cur), (cnt)); \ 1006 (sizeof (type), (base), &(cur), (cnt)); \
605 init ((base) + (ocur_), (cur) - ocur_); \ 1007 init ((base) + (ocur_), (cur) - ocur_); \
606 } 1008 }
607 1009
… …
614 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 1016 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
615 } 1017 }
616#endif 1018#endif
617 1019
618#define array_free(stem, idx) \ 1020#define array_free(stem, idx) \
619 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 1021 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
620 1022
621/*****************************************************************************/ 1023/*****************************************************************************/
1024
1025/* dummy callback for pending events */
1026static void noinline
1027pendingcb (EV_P_ ev_prepare *w, int revents)
1028{
1029}
622 1030
623void noinline 1031void noinline
624ev_feed_event (EV_P_ void *w, int revents) 1032ev_feed_event (EV_P_ void *w, int revents)
625{ 1033{
626 W w_ = (W)w; 1034 W w_ = (W)w;
… …
635 pendings [pri][w_->pending - 1].w = w_; 1043 pendings [pri][w_->pending - 1].w = w_;
636 pendings [pri][w_->pending - 1].events = revents; 1044 pendings [pri][w_->pending - 1].events = revents;
637 } 1045 }
638} 1046}
639 1047
640void inline_speed 1048inline_speed void
1049feed_reverse (EV_P_ W w)
1050{
1051 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1052 rfeeds [rfeedcnt++] = w;
1053}
1054
1055inline_size void
1056feed_reverse_done (EV_P_ int revents)
1057{
1058 do
1059 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1060 while (rfeedcnt);
1061}
1062
1063inline_speed void
641queue_events (EV_P_ W *events, int eventcnt, int type) 1064queue_events (EV_P_ W *events, int eventcnt, int type)
642{ 1065{
643 int i; 1066 int i;
644 1067
645 for (i = 0; i < eventcnt; ++i) 1068 for (i = 0; i < eventcnt; ++i)
646 ev_feed_event (EV_A_ events [i], type); 1069 ev_feed_event (EV_A_ events [i], type);
647} 1070}
648 1071
649/*****************************************************************************/ 1072/*****************************************************************************/
650 1073
651void inline_size 1074inline_speed void
652anfds_init (ANFD *base, int count)
653{
654 while (count--)
655 {
656 base->head = 0;
657 base->events = EV_NONE;
658 base->reify = 0;
659
660 ++base;
661 }
662}
663
664void inline_speed
665fd_event (EV_P_ int fd, int revents) 1075fd_event_nocheck (EV_P_ int fd, int revents)
666{ 1076{
667 ANFD *anfd = anfds + fd; 1077 ANFD *anfd = anfds + fd;
668 ev_io *w; 1078 ev_io *w;
669 1079
670 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1080 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
674 if (ev) 1084 if (ev)
675 ev_feed_event (EV_A_ (W)w, ev); 1085 ev_feed_event (EV_A_ (W)w, ev);
676 } 1086 }
677} 1087}
678 1088
1089/* do not submit kernel events for fds that have reify set */
1090/* because that means they changed while we were polling for new events */
1091inline_speed void
1092fd_event (EV_P_ int fd, int revents)
1093{
1094 ANFD *anfd = anfds + fd;
1095
1096 if (expect_true (!anfd->reify))
1097 fd_event_nocheck (EV_A_ fd, revents);
1098}
1099
679void 1100void
680ev_feed_fd_event (EV_P_ int fd, int revents) 1101ev_feed_fd_event (EV_P_ int fd, int revents)
681{ 1102{
682 if (fd >= 0 && fd < anfdmax) 1103 if (fd >= 0 && fd < anfdmax)
683 fd_event (EV_A_ fd, revents); 1104 fd_event_nocheck (EV_A_ fd, revents);
684} 1105}
685 1106
686void inline_size 1107/* make sure the external fd watch events are in-sync */
1108/* with the kernel/libev internal state */
1109inline_size void
687fd_reify (EV_P) 1110fd_reify (EV_P)
688{ 1111{
689 int i; 1112 int i;
1113
1114#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1115 for (i = 0; i < fdchangecnt; ++i)
1116 {
1117 int fd = fdchanges [i];
1118 ANFD *anfd = anfds + fd;
1119
1120 if (anfd->reify & EV__IOFDSET && anfd->head)
1121 {
1122 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1123
1124 if (handle != anfd->handle)
1125 {
1126 unsigned long arg;
1127
1128 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1129
1130 /* handle changed, but fd didn't - we need to do it in two steps */
1131 backend_modify (EV_A_ fd, anfd->events, 0);
1132 anfd->events = 0;
1133 anfd->handle = handle;
1134 }
1135 }
1136 }
1137#endif
690 1138
691 for (i = 0; i < fdchangecnt; ++i) 1139 for (i = 0; i < fdchangecnt; ++i)
692 { 1140 {
693 int fd = fdchanges [i]; 1141 int fd = fdchanges [i];
694 ANFD *anfd = anfds + fd; 1142 ANFD *anfd = anfds + fd;
695 ev_io *w; 1143 ev_io *w;
696 1144
697 unsigned char events = 0; 1145 unsigned char o_events = anfd->events;
1146 unsigned char o_reify = anfd->reify;
698 1147
699 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1148 anfd->reify = 0;
700 events |= (unsigned char)w->events;
701 1149
702#if EV_SELECT_IS_WINSOCKET 1150 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
703 if (events)
704 { 1151 {
705 unsigned long argp; 1152 anfd->events = 0;
706 #ifdef EV_FD_TO_WIN32_HANDLE 1153
707 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1154 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
708 #else 1155 anfd->events |= (unsigned char)w->events;
709 anfd->handle = _get_osfhandle (fd); 1156
710 #endif 1157 if (o_events != anfd->events)
711 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 1158 o_reify = EV__IOFDSET; /* actually |= */
712 } 1159 }
713#endif
714 1160
715 { 1161 if (o_reify & EV__IOFDSET)
716 unsigned char o_events = anfd->events;
717 unsigned char o_reify = anfd->reify;
718
719 anfd->reify = 0;
720 anfd->events = events;
721
722 if (o_events != events || o_reify & EV_IOFDSET)
723 backend_modify (EV_A_ fd, o_events, events); 1162 backend_modify (EV_A_ fd, o_events, anfd->events);
724 }
725 } 1163 }
726 1164
727 fdchangecnt = 0; 1165 fdchangecnt = 0;
728} 1166}
729 1167
730void inline_size 1168/* something about the given fd changed */
1169inline_size void
731fd_change (EV_P_ int fd, int flags) 1170fd_change (EV_P_ int fd, int flags)
732{ 1171{
733 unsigned char reify = anfds [fd].reify; 1172 unsigned char reify = anfds [fd].reify;
734 anfds [fd].reify |= flags; 1173 anfds [fd].reify |= flags;
735 1174
… …
739 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1178 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
740 fdchanges [fdchangecnt - 1] = fd; 1179 fdchanges [fdchangecnt - 1] = fd;
741 } 1180 }
742} 1181}
743 1182
744void inline_speed 1183/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1184inline_speed void ecb_cold
745fd_kill (EV_P_ int fd) 1185fd_kill (EV_P_ int fd)
746{ 1186{
747 ev_io *w; 1187 ev_io *w;
748 1188
749 while ((w = (ev_io *)anfds [fd].head)) 1189 while ((w = (ev_io *)anfds [fd].head))
… …
751 ev_io_stop (EV_A_ w); 1191 ev_io_stop (EV_A_ w);
752 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1192 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
753 } 1193 }
754} 1194}
755 1195
756int inline_size 1196/* check whether the given fd is actually valid, for error recovery */
1197inline_size int ecb_cold
757fd_valid (int fd) 1198fd_valid (int fd)
758{ 1199{
759#ifdef _WIN32 1200#ifdef _WIN32
760 return _get_osfhandle (fd) != -1; 1201 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
761#else 1202#else
762 return fcntl (fd, F_GETFD) != -1; 1203 return fcntl (fd, F_GETFD) != -1;
763#endif 1204#endif
764} 1205}
765 1206
766/* called on EBADF to verify fds */ 1207/* called on EBADF to verify fds */
767static void noinline 1208static void noinline ecb_cold
768fd_ebadf (EV_P) 1209fd_ebadf (EV_P)
769{ 1210{
770 int fd; 1211 int fd;
771 1212
772 for (fd = 0; fd < anfdmax; ++fd) 1213 for (fd = 0; fd < anfdmax; ++fd)
773 if (anfds [fd].events) 1214 if (anfds [fd].events)
774 if (!fd_valid (fd) == -1 && errno == EBADF) 1215 if (!fd_valid (fd) && errno == EBADF)
775 fd_kill (EV_A_ fd); 1216 fd_kill (EV_A_ fd);
776} 1217}
777 1218
778/* called on ENOMEM in select/poll to kill some fds and retry */ 1219/* called on ENOMEM in select/poll to kill some fds and retry */
779static void noinline 1220static void noinline ecb_cold
780fd_enomem (EV_P) 1221fd_enomem (EV_P)
781{ 1222{
782 int fd; 1223 int fd;
783 1224
784 for (fd = anfdmax; fd--; ) 1225 for (fd = anfdmax; fd--; )
785 if (anfds [fd].events) 1226 if (anfds [fd].events)
786 { 1227 {
787 fd_kill (EV_A_ fd); 1228 fd_kill (EV_A_ fd);
788 return; 1229 break;
789 } 1230 }
790} 1231}
791 1232
792/* usually called after fork if backend needs to re-arm all fds from scratch */ 1233/* usually called after fork if backend needs to re-arm all fds from scratch */
793static void noinline 1234static void noinline
… …
797 1238
798 for (fd = 0; fd < anfdmax; ++fd) 1239 for (fd = 0; fd < anfdmax; ++fd)
799 if (anfds [fd].events) 1240 if (anfds [fd].events)
800 { 1241 {
801 anfds [fd].events = 0; 1242 anfds [fd].events = 0;
1243 anfds [fd].emask = 0;
802 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1244 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
803 } 1245 }
804} 1246}
805 1247
1248/* used to prepare libev internal fd's */
1249/* this is not fork-safe */
1250inline_speed void
1251fd_intern (int fd)
1252{
1253#ifdef _WIN32
1254 unsigned long arg = 1;
1255 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1256#else
1257 fcntl (fd, F_SETFD, FD_CLOEXEC);
1258 fcntl (fd, F_SETFL, O_NONBLOCK);
1259#endif
1260}
1261
806/*****************************************************************************/ 1262/*****************************************************************************/
807 1263
808/* 1264/*
809 * the heap functions want a real array index. array index 0 uis guaranteed to not 1265 * the heap functions want a real array index. array index 0 is guaranteed to not
810 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1266 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
811 * the branching factor of the d-tree. 1267 * the branching factor of the d-tree.
812 */ 1268 */
813 1269
814/* 1270/*
… …
823#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1279#define HEAP0 (DHEAP - 1) /* index of first element in heap */
824#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1280#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
825#define UPHEAP_DONE(p,k) ((p) == (k)) 1281#define UPHEAP_DONE(p,k) ((p) == (k))
826 1282
827/* away from the root */ 1283/* away from the root */
828void inline_speed 1284inline_speed void
829downheap (ANHE *heap, int N, int k) 1285downheap (ANHE *heap, int N, int k)
830{ 1286{
831 ANHE he = heap [k]; 1287 ANHE he = heap [k];
832 ANHE *E = heap + N + HEAP0; 1288 ANHE *E = heap + N + HEAP0;
833 1289
… …
873#define HEAP0 1 1329#define HEAP0 1
874#define HPARENT(k) ((k) >> 1) 1330#define HPARENT(k) ((k) >> 1)
875#define UPHEAP_DONE(p,k) (!(p)) 1331#define UPHEAP_DONE(p,k) (!(p))
876 1332
877/* away from the root */ 1333/* away from the root */
878void inline_speed 1334inline_speed void
879downheap (ANHE *heap, int N, int k) 1335downheap (ANHE *heap, int N, int k)
880{ 1336{
881 ANHE he = heap [k]; 1337 ANHE he = heap [k];
882 1338
883 for (;;) 1339 for (;;)
884 { 1340 {
885 int c = k << 1; 1341 int c = k << 1;
886 1342
887 if (c > N + HEAP0 - 1) 1343 if (c >= N + HEAP0)
888 break; 1344 break;
889 1345
890 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1346 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
891 ? 1 : 0; 1347 ? 1 : 0;
892 1348
… …
903 ev_active (ANHE_w (he)) = k; 1359 ev_active (ANHE_w (he)) = k;
904} 1360}
905#endif 1361#endif
906 1362
907/* towards the root */ 1363/* towards the root */
908void inline_speed 1364inline_speed void
909upheap (ANHE *heap, int k) 1365upheap (ANHE *heap, int k)
910{ 1366{
911 ANHE he = heap [k]; 1367 ANHE he = heap [k];
912 1368
913 for (;;) 1369 for (;;)
… …
924 1380
925 heap [k] = he; 1381 heap [k] = he;
926 ev_active (ANHE_w (he)) = k; 1382 ev_active (ANHE_w (he)) = k;
927} 1383}
928 1384
929void inline_size 1385/* move an element suitably so it is in a correct place */
1386inline_size void
930adjustheap (ANHE *heap, int N, int k) 1387adjustheap (ANHE *heap, int N, int k)
931{ 1388{
932 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1389 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
933 upheap (heap, k); 1390 upheap (heap, k);
934 else 1391 else
935 downheap (heap, N, k); 1392 downheap (heap, N, k);
936} 1393}
937 1394
938/* rebuild the heap: this function is used only once and executed rarely */ 1395/* rebuild the heap: this function is used only once and executed rarely */
939void inline_size 1396inline_size void
940reheap (ANHE *heap, int N) 1397reheap (ANHE *heap, int N)
941{ 1398{
942 int i; 1399 int i;
1400
943 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1401 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
944 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ 1402 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
945 for (i = 0; i < N; ++i) 1403 for (i = 0; i < N; ++i)
946 upheap (heap, i + HEAP0); 1404 upheap (heap, i + HEAP0);
947} 1405}
948 1406
949#if EV_VERIFY
950static void
951checkheap (ANHE *heap, int N)
952{
953 int i;
954
955 for (i = HEAP0; i < N + HEAP0; ++i)
956 {
957 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
958 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
959 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
960 }
961}
962#endif
963
964/*****************************************************************************/ 1407/*****************************************************************************/
965 1408
1409/* associate signal watchers to a signal signal */
966typedef struct 1410typedef struct
967{ 1411{
1412 EV_ATOMIC_T pending;
1413#if EV_MULTIPLICITY
1414 EV_P;
1415#endif
968 WL head; 1416 WL head;
969 EV_ATOMIC_T gotsig;
970} ANSIG; 1417} ANSIG;
971 1418
972static ANSIG *signals; 1419static ANSIG signals [EV_NSIG - 1];
973static int signalmax;
974
975static EV_ATOMIC_T gotsig;
976
977void inline_size
978signals_init (ANSIG *base, int count)
979{
980 while (count--)
981 {
982 base->head = 0;
983 base->gotsig = 0;
984
985 ++base;
986 }
987}
988 1420
989/*****************************************************************************/ 1421/*****************************************************************************/
990 1422
991void inline_speed 1423#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
992fd_intern (int fd)
993{
994#ifdef _WIN32
995 int arg = 1;
996 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
997#else
998 fcntl (fd, F_SETFD, FD_CLOEXEC);
999 fcntl (fd, F_SETFL, O_NONBLOCK);
1000#endif
1001}
1002 1424
1003static void noinline 1425static void noinline ecb_cold
1004evpipe_init (EV_P) 1426evpipe_init (EV_P)
1005{ 1427{
1006 if (!ev_is_active (&pipeev)) 1428 if (!ev_is_active (&pipe_w))
1007 { 1429 {
1008#if EV_USE_EVENTFD 1430# if EV_USE_EVENTFD
1431 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1432 if (evfd < 0 && errno == EINVAL)
1009 if ((evfd = eventfd (0, 0)) >= 0) 1433 evfd = eventfd (0, 0);
1434
1435 if (evfd >= 0)
1010 { 1436 {
1011 evpipe [0] = -1; 1437 evpipe [0] = -1;
1012 fd_intern (evfd); 1438 fd_intern (evfd); /* doing it twice doesn't hurt */
1013 ev_io_set (&pipeev, evfd, EV_READ); 1439 ev_io_set (&pipe_w, evfd, EV_READ);
1014 } 1440 }
1015 else 1441 else
1016#endif 1442# endif
1017 { 1443 {
1018 while (pipe (evpipe)) 1444 while (pipe (evpipe))
1019 syserr ("(libev) error creating signal/async pipe"); 1445 ev_syserr ("(libev) error creating signal/async pipe");
1020 1446
1021 fd_intern (evpipe [0]); 1447 fd_intern (evpipe [0]);
1022 fd_intern (evpipe [1]); 1448 fd_intern (evpipe [1]);
1023 ev_io_set (&pipeev, evpipe [0], EV_READ); 1449 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1024 } 1450 }
1025 1451
1026 ev_io_start (EV_A_ &pipeev); 1452 ev_io_start (EV_A_ &pipe_w);
1027 ev_unref (EV_A); /* watcher should not keep loop alive */ 1453 ev_unref (EV_A); /* watcher should not keep loop alive */
1028 } 1454 }
1029} 1455}
1030 1456
1031void inline_size 1457inline_speed void
1032evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1458evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1033{ 1459{
1034 if (!*flag) 1460 if (expect_true (*flag))
1461 return;
1462
1463 *flag = 1;
1464
1465 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1466
1467 pipe_write_skipped = 1;
1468
1469 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1470
1471 if (pipe_write_wanted)
1035 { 1472 {
1473 int old_errno;
1474
1475 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1476
1036 int old_errno = errno; /* save errno because write might clobber it */ 1477 old_errno = errno; /* save errno because write will clobber it */
1037
1038 *flag = 1;
1039 1478
1040#if EV_USE_EVENTFD 1479#if EV_USE_EVENTFD
1041 if (evfd >= 0) 1480 if (evfd >= 0)
1042 { 1481 {
1043 uint64_t counter = 1; 1482 uint64_t counter = 1;
1044 write (evfd, &counter, sizeof (uint64_t)); 1483 write (evfd, &counter, sizeof (uint64_t));
1045 } 1484 }
1046 else 1485 else
1047#endif 1486#endif
1487 {
1488 /* win32 people keep sending patches that change this write() to send() */
1489 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1490 /* so when you think this write should be a send instead, please find out */
1491 /* where your send() is from - it's definitely not the microsoft send, and */
1492 /* tell me. thank you. */
1048 write (evpipe [1], &old_errno, 1); 1493 write (evpipe [1], &(evpipe [1]), 1);
1494 }
1049 1495
1050 errno = old_errno; 1496 errno = old_errno;
1051 } 1497 }
1052} 1498}
1053 1499
1500/* called whenever the libev signal pipe */
1501/* got some events (signal, async) */
1054static void 1502static void
1055pipecb (EV_P_ ev_io *iow, int revents) 1503pipecb (EV_P_ ev_io *iow, int revents)
1056{ 1504{
1505 int i;
1506
1507 if (revents & EV_READ)
1508 {
1057#if EV_USE_EVENTFD 1509#if EV_USE_EVENTFD
1058 if (evfd >= 0) 1510 if (evfd >= 0)
1059 { 1511 {
1060 uint64_t counter; 1512 uint64_t counter;
1061 read (evfd, &counter, sizeof (uint64_t)); 1513 read (evfd, &counter, sizeof (uint64_t));
1062 } 1514 }
1063 else 1515 else
1064#endif 1516#endif
1065 { 1517 {
1066 char dummy; 1518 char dummy;
1519 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1067 read (evpipe [0], &dummy, 1); 1520 read (evpipe [0], &dummy, 1);
1521 }
1522 }
1523
1524 pipe_write_skipped = 0;
1525
1526#if EV_SIGNAL_ENABLE
1527 if (sig_pending)
1068 } 1528 {
1529 sig_pending = 0;
1069 1530
1070 if (gotsig && ev_is_default_loop (EV_A)) 1531 for (i = EV_NSIG - 1; i--; )
1071 { 1532 if (expect_false (signals [i].pending))
1072 int signum;
1073 gotsig = 0;
1074
1075 for (signum = signalmax; signum--; )
1076 if (signals [signum].gotsig)
1077 ev_feed_signal_event (EV_A_ signum + 1); 1533 ev_feed_signal_event (EV_A_ i + 1);
1078 } 1534 }
1535#endif
1079 1536
1080#if EV_ASYNC_ENABLE 1537#if EV_ASYNC_ENABLE
1081 if (gotasync) 1538 if (async_pending)
1082 { 1539 {
1083 int i; 1540 async_pending = 0;
1084 gotasync = 0;
1085 1541
1086 for (i = asynccnt; i--; ) 1542 for (i = asynccnt; i--; )
1087 if (asyncs [i]->sent) 1543 if (asyncs [i]->sent)
1088 { 1544 {
1089 asyncs [i]->sent = 0; 1545 asyncs [i]->sent = 0;
… …
1093#endif 1549#endif
1094} 1550}
1095 1551
1096/*****************************************************************************/ 1552/*****************************************************************************/
1097 1553
1554void
1555ev_feed_signal (int signum)
1556{
1557#if EV_MULTIPLICITY
1558 EV_P = signals [signum - 1].loop;
1559
1560 if (!EV_A)
1561 return;
1562#endif
1563
1564 if (!ev_active (&pipe_w))
1565 return;
1566
1567 signals [signum - 1].pending = 1;
1568 evpipe_write (EV_A_ &sig_pending);
1569}
1570
1098static void 1571static void
1099ev_sighandler (int signum) 1572ev_sighandler (int signum)
1100{ 1573{
1101#if EV_MULTIPLICITY
1102 struct ev_loop *loop = &default_loop_struct;
1103#endif
1104
1105#if _WIN32 1574#ifdef _WIN32
1106 signal (signum, ev_sighandler); 1575 signal (signum, ev_sighandler);
1107#endif 1576#endif
1108 1577
1109 signals [signum - 1].gotsig = 1; 1578 ev_feed_signal (signum);
1110 evpipe_write (EV_A_ &gotsig);
1111} 1579}
1112 1580
1113void noinline 1581void noinline
1114ev_feed_signal_event (EV_P_ int signum) 1582ev_feed_signal_event (EV_P_ int signum)
1115{ 1583{
1116 WL w; 1584 WL w;
1117 1585
1586 if (expect_false (signum <= 0 || signum > EV_NSIG))
1587 return;
1588
1589 --signum;
1590
1118#if EV_MULTIPLICITY 1591#if EV_MULTIPLICITY
1119 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1592 /* it is permissible to try to feed a signal to the wrong loop */
1120#endif 1593 /* or, likely more useful, feeding a signal nobody is waiting for */
1121 1594
1122 --signum; 1595 if (expect_false (signals [signum].loop != EV_A))
1123
1124 if (signum < 0 || signum >= signalmax)
1125 return; 1596 return;
1597#endif
1126 1598
1127 signals [signum].gotsig = 0; 1599 signals [signum].pending = 0;
1128 1600
1129 for (w = signals [signum].head; w; w = w->next) 1601 for (w = signals [signum].head; w; w = w->next)
1130 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1602 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1131} 1603}
1132 1604
1605#if EV_USE_SIGNALFD
1606static void
1607sigfdcb (EV_P_ ev_io *iow, int revents)
1608{
1609 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1610
1611 for (;;)
1612 {
1613 ssize_t res = read (sigfd, si, sizeof (si));
1614
1615 /* not ISO-C, as res might be -1, but works with SuS */
1616 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1617 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1618
1619 if (res < (ssize_t)sizeof (si))
1620 break;
1621 }
1622}
1623#endif
1624
1625#endif
1626
1133/*****************************************************************************/ 1627/*****************************************************************************/
1134 1628
1629#if EV_CHILD_ENABLE
1135static WL childs [EV_PID_HASHSIZE]; 1630static WL childs [EV_PID_HASHSIZE];
1136
1137#ifndef _WIN32
1138 1631
1139static ev_signal childev; 1632static ev_signal childev;
1140 1633
1141#ifndef WIFCONTINUED 1634#ifndef WIFCONTINUED
1142# define WIFCONTINUED(status) 0 1635# define WIFCONTINUED(status) 0
1143#endif 1636#endif
1144 1637
1145void inline_speed 1638/* handle a single child status event */
1639inline_speed void
1146child_reap (EV_P_ int chain, int pid, int status) 1640child_reap (EV_P_ int chain, int pid, int status)
1147{ 1641{
1148 ev_child *w; 1642 ev_child *w;
1149 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1643 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1150 1644
1151 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1645 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1152 { 1646 {
1153 if ((w->pid == pid || !w->pid) 1647 if ((w->pid == pid || !w->pid)
1154 && (!traced || (w->flags & 1))) 1648 && (!traced || (w->flags & 1)))
1155 { 1649 {
1156 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1650 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1163 1657
1164#ifndef WCONTINUED 1658#ifndef WCONTINUED
1165# define WCONTINUED 0 1659# define WCONTINUED 0
1166#endif 1660#endif
1167 1661
1662/* called on sigchld etc., calls waitpid */
1168static void 1663static void
1169childcb (EV_P_ ev_signal *sw, int revents) 1664childcb (EV_P_ ev_signal *sw, int revents)
1170{ 1665{
1171 int pid, status; 1666 int pid, status;
1172 1667
… …
1180 /* make sure we are called again until all children have been reaped */ 1675 /* make sure we are called again until all children have been reaped */
1181 /* we need to do it this way so that the callback gets called before we continue */ 1676 /* we need to do it this way so that the callback gets called before we continue */
1182 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1677 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1183 1678
1184 child_reap (EV_A_ pid, pid, status); 1679 child_reap (EV_A_ pid, pid, status);
1185 if (EV_PID_HASHSIZE > 1) 1680 if ((EV_PID_HASHSIZE) > 1)
1186 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1681 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1187} 1682}
1188 1683
1189#endif 1684#endif
1190 1685
1191/*****************************************************************************/ 1686/*****************************************************************************/
1192 1687
1688#if EV_USE_IOCP
1689# include "ev_iocp.c"
1690#endif
1193#if EV_USE_PORT 1691#if EV_USE_PORT
1194# include "ev_port.c" 1692# include "ev_port.c"
1195#endif 1693#endif
1196#if EV_USE_KQUEUE 1694#if EV_USE_KQUEUE
1197# include "ev_kqueue.c" 1695# include "ev_kqueue.c"
… …
1204#endif 1702#endif
1205#if EV_USE_SELECT 1703#if EV_USE_SELECT
1206# include "ev_select.c" 1704# include "ev_select.c"
1207#endif 1705#endif
1208 1706
1209int 1707int ecb_cold
1210ev_version_major (void) 1708ev_version_major (void)
1211{ 1709{
1212 return EV_VERSION_MAJOR; 1710 return EV_VERSION_MAJOR;
1213} 1711}
1214 1712
1215int 1713int ecb_cold
1216ev_version_minor (void) 1714ev_version_minor (void)
1217{ 1715{
1218 return EV_VERSION_MINOR; 1716 return EV_VERSION_MINOR;
1219} 1717}
1220 1718
1221/* return true if we are running with elevated privileges and should ignore env variables */ 1719/* return true if we are running with elevated privileges and should ignore env variables */
1222int inline_size 1720int inline_size ecb_cold
1223enable_secure (void) 1721enable_secure (void)
1224{ 1722{
1225#ifdef _WIN32 1723#ifdef _WIN32
1226 return 0; 1724 return 0;
1227#else 1725#else
1228 return getuid () != geteuid () 1726 return getuid () != geteuid ()
1229 || getgid () != getegid (); 1727 || getgid () != getegid ();
1230#endif 1728#endif
1231} 1729}
1232 1730
1233unsigned int 1731unsigned int ecb_cold
1234ev_supported_backends (void) 1732ev_supported_backends (void)
1235{ 1733{
1236 unsigned int flags = 0; 1734 unsigned int flags = 0;
1237 1735
1238 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1736 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1242 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1740 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1243 1741
1244 return flags; 1742 return flags;
1245} 1743}
1246 1744
1247unsigned int 1745unsigned int ecb_cold
1248ev_recommended_backends (void) 1746ev_recommended_backends (void)
1249{ 1747{
1250 unsigned int flags = ev_supported_backends (); 1748 unsigned int flags = ev_supported_backends ();
1251 1749
1252#ifndef __NetBSD__ 1750#ifndef __NetBSD__
1253 /* kqueue is borked on everything but netbsd apparently */ 1751 /* kqueue is borked on everything but netbsd apparently */
1254 /* it usually doesn't work correctly on anything but sockets and pipes */ 1752 /* it usually doesn't work correctly on anything but sockets and pipes */
1255 flags &= ~EVBACKEND_KQUEUE; 1753 flags &= ~EVBACKEND_KQUEUE;
1256#endif 1754#endif
1257#ifdef __APPLE__ 1755#ifdef __APPLE__
1258 // flags &= ~EVBACKEND_KQUEUE; for documentation 1756 /* only select works correctly on that "unix-certified" platform */
1259 flags &= ~EVBACKEND_POLL; 1757 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1758 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1759#endif
1760#ifdef __FreeBSD__
1761 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1260#endif 1762#endif
1261 1763
1262 return flags; 1764 return flags;
1263} 1765}
1264 1766
1265unsigned int 1767unsigned int ecb_cold
1266ev_embeddable_backends (void) 1768ev_embeddable_backends (void)
1267{ 1769{
1268 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1770 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1269 1771
1270 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1772 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1271 /* please fix it and tell me how to detect the fix */ 1773 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1272 flags &= ~EVBACKEND_EPOLL; 1774 flags &= ~EVBACKEND_EPOLL;
1273 1775
1274 return flags; 1776 return flags;
1275} 1777}
1276 1778
1277unsigned int 1779unsigned int
1278ev_backend (EV_P) 1780ev_backend (EV_P)
1279{ 1781{
1280 return backend; 1782 return backend;
1281} 1783}
1282 1784
1785#if EV_FEATURE_API
1283unsigned int 1786unsigned int
1284ev_loop_count (EV_P) 1787ev_iteration (EV_P)
1285{ 1788{
1286 return loop_count; 1789 return loop_count;
1790}
1791
1792unsigned int
1793ev_depth (EV_P)
1794{
1795 return loop_depth;
1287} 1796}
1288 1797
1289void 1798void
1290ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1799ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1291{ 1800{
… …
1296ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1805ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1297{ 1806{
1298 timeout_blocktime = interval; 1807 timeout_blocktime = interval;
1299} 1808}
1300 1809
1810void
1811ev_set_userdata (EV_P_ void *data)
1812{
1813 userdata = data;
1814}
1815
1816void *
1817ev_userdata (EV_P)
1818{
1819 return userdata;
1820}
1821
1822void
1823ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1824{
1825 invoke_cb = invoke_pending_cb;
1826}
1827
1828void
1829ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1830{
1831 release_cb = release;
1832 acquire_cb = acquire;
1833}
1834#endif
1835
1836/* initialise a loop structure, must be zero-initialised */
1301static void noinline 1837static void noinline ecb_cold
1302loop_init (EV_P_ unsigned int flags) 1838loop_init (EV_P_ unsigned int flags)
1303{ 1839{
1304 if (!backend) 1840 if (!backend)
1305 { 1841 {
1842 origflags = flags;
1843
1844#if EV_USE_REALTIME
1845 if (!have_realtime)
1846 {
1847 struct timespec ts;
1848
1849 if (!clock_gettime (CLOCK_REALTIME, &ts))
1850 have_realtime = 1;
1851 }
1852#endif
1853
1306#if EV_USE_MONOTONIC 1854#if EV_USE_MONOTONIC
1855 if (!have_monotonic)
1307 { 1856 {
1308 struct timespec ts; 1857 struct timespec ts;
1858
1309 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1859 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1310 have_monotonic = 1; 1860 have_monotonic = 1;
1311 } 1861 }
1312#endif
1313
1314 ev_rt_now = ev_time ();
1315 mn_now = get_clock ();
1316 now_floor = mn_now;
1317 rtmn_diff = ev_rt_now - mn_now;
1318
1319 io_blocktime = 0.;
1320 timeout_blocktime = 0.;
1321 backend = 0;
1322 backend_fd = -1;
1323 gotasync = 0;
1324#if EV_USE_INOTIFY
1325 fs_fd = -2;
1326#endif 1862#endif
1327 1863
1328 /* pid check not overridable via env */ 1864 /* pid check not overridable via env */
1329#ifndef _WIN32 1865#ifndef _WIN32
1330 if (flags & EVFLAG_FORKCHECK) 1866 if (flags & EVFLAG_FORKCHECK)
… …
1334 if (!(flags & EVFLAG_NOENV) 1870 if (!(flags & EVFLAG_NOENV)
1335 && !enable_secure () 1871 && !enable_secure ()
1336 && getenv ("LIBEV_FLAGS")) 1872 && getenv ("LIBEV_FLAGS"))
1337 flags = atoi (getenv ("LIBEV_FLAGS")); 1873 flags = atoi (getenv ("LIBEV_FLAGS"));
1338 1874
1339 if (!(flags & 0x0000ffffU)) 1875 ev_rt_now = ev_time ();
1876 mn_now = get_clock ();
1877 now_floor = mn_now;
1878 rtmn_diff = ev_rt_now - mn_now;
1879#if EV_FEATURE_API
1880 invoke_cb = ev_invoke_pending;
1881#endif
1882
1883 io_blocktime = 0.;
1884 timeout_blocktime = 0.;
1885 backend = 0;
1886 backend_fd = -1;
1887 sig_pending = 0;
1888#if EV_ASYNC_ENABLE
1889 async_pending = 0;
1890#endif
1891 pipe_write_skipped = 0;
1892 pipe_write_wanted = 0;
1893#if EV_USE_INOTIFY
1894 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1895#endif
1896#if EV_USE_SIGNALFD
1897 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1898#endif
1899
1900 if (!(flags & EVBACKEND_MASK))
1340 flags |= ev_recommended_backends (); 1901 flags |= ev_recommended_backends ();
1341 1902
1903#if EV_USE_IOCP
1904 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1905#endif
1342#if EV_USE_PORT 1906#if EV_USE_PORT
1343 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1907 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1344#endif 1908#endif
1345#if EV_USE_KQUEUE 1909#if EV_USE_KQUEUE
1346 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1910 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1353#endif 1917#endif
1354#if EV_USE_SELECT 1918#if EV_USE_SELECT
1355 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1919 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1356#endif 1920#endif
1357 1921
1922 ev_prepare_init (&pending_w, pendingcb);
1923
1924#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1358 ev_init (&pipeev, pipecb); 1925 ev_init (&pipe_w, pipecb);
1359 ev_set_priority (&pipeev, EV_MAXPRI); 1926 ev_set_priority (&pipe_w, EV_MAXPRI);
1927#endif
1360 } 1928 }
1361} 1929}
1362 1930
1363static void noinline 1931/* free up a loop structure */
1932void ecb_cold
1364loop_destroy (EV_P) 1933ev_loop_destroy (EV_P)
1365{ 1934{
1366 int i; 1935 int i;
1367 1936
1937#if EV_MULTIPLICITY
1938 /* mimic free (0) */
1939 if (!EV_A)
1940 return;
1941#endif
1942
1943#if EV_CLEANUP_ENABLE
1944 /* queue cleanup watchers (and execute them) */
1945 if (expect_false (cleanupcnt))
1946 {
1947 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1948 EV_INVOKE_PENDING;
1949 }
1950#endif
1951
1952#if EV_CHILD_ENABLE
1953 if (ev_is_active (&childev))
1954 {
1955 ev_ref (EV_A); /* child watcher */
1956 ev_signal_stop (EV_A_ &childev);
1957 }
1958#endif
1959
1368 if (ev_is_active (&pipeev)) 1960 if (ev_is_active (&pipe_w))
1369 { 1961 {
1370 ev_ref (EV_A); /* signal watcher */ 1962 /*ev_ref (EV_A);*/
1371 ev_io_stop (EV_A_ &pipeev); 1963 /*ev_io_stop (EV_A_ &pipe_w);*/
1372 1964
1373#if EV_USE_EVENTFD 1965#if EV_USE_EVENTFD
1374 if (evfd >= 0) 1966 if (evfd >= 0)
1375 close (evfd); 1967 close (evfd);
1376#endif 1968#endif
1377 1969
1378 if (evpipe [0] >= 0) 1970 if (evpipe [0] >= 0)
1379 { 1971 {
1380 close (evpipe [0]); 1972 EV_WIN32_CLOSE_FD (evpipe [0]);
1381 close (evpipe [1]); 1973 EV_WIN32_CLOSE_FD (evpipe [1]);
1382 } 1974 }
1383 } 1975 }
1976
1977#if EV_USE_SIGNALFD
1978 if (ev_is_active (&sigfd_w))
1979 close (sigfd);
1980#endif
1384 1981
1385#if EV_USE_INOTIFY 1982#if EV_USE_INOTIFY
1386 if (fs_fd >= 0) 1983 if (fs_fd >= 0)
1387 close (fs_fd); 1984 close (fs_fd);
1388#endif 1985#endif
1389 1986
1390 if (backend_fd >= 0) 1987 if (backend_fd >= 0)
1391 close (backend_fd); 1988 close (backend_fd);
1392 1989
1990#if EV_USE_IOCP
1991 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1992#endif
1393#if EV_USE_PORT 1993#if EV_USE_PORT
1394 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1994 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1395#endif 1995#endif
1396#if EV_USE_KQUEUE 1996#if EV_USE_KQUEUE
1397 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1997 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1412#if EV_IDLE_ENABLE 2012#if EV_IDLE_ENABLE
1413 array_free (idle, [i]); 2013 array_free (idle, [i]);
1414#endif 2014#endif
1415 } 2015 }
1416 2016
1417 ev_free (anfds); anfdmax = 0; 2017 ev_free (anfds); anfds = 0; anfdmax = 0;
1418 2018
1419 /* have to use the microsoft-never-gets-it-right macro */ 2019 /* have to use the microsoft-never-gets-it-right macro */
2020 array_free (rfeed, EMPTY);
1420 array_free (fdchange, EMPTY); 2021 array_free (fdchange, EMPTY);
1421 array_free (timer, EMPTY); 2022 array_free (timer, EMPTY);
1422#if EV_PERIODIC_ENABLE 2023#if EV_PERIODIC_ENABLE
1423 array_free (periodic, EMPTY); 2024 array_free (periodic, EMPTY);
1424#endif 2025#endif
1425#if EV_FORK_ENABLE 2026#if EV_FORK_ENABLE
1426 array_free (fork, EMPTY); 2027 array_free (fork, EMPTY);
1427#endif 2028#endif
2029#if EV_CLEANUP_ENABLE
2030 array_free (cleanup, EMPTY);
2031#endif
1428 array_free (prepare, EMPTY); 2032 array_free (prepare, EMPTY);
1429 array_free (check, EMPTY); 2033 array_free (check, EMPTY);
1430#if EV_ASYNC_ENABLE 2034#if EV_ASYNC_ENABLE
1431 array_free (async, EMPTY); 2035 array_free (async, EMPTY);
1432#endif 2036#endif
1433 2037
1434 backend = 0; 2038 backend = 0;
2039
2040#if EV_MULTIPLICITY
2041 if (ev_is_default_loop (EV_A))
2042#endif
2043 ev_default_loop_ptr = 0;
2044#if EV_MULTIPLICITY
2045 else
2046 ev_free (EV_A);
2047#endif
1435} 2048}
1436 2049
1437#if EV_USE_INOTIFY 2050#if EV_USE_INOTIFY
1438void inline_size infy_fork (EV_P); 2051inline_size void infy_fork (EV_P);
1439#endif 2052#endif
1440 2053
1441void inline_size 2054inline_size void
1442loop_fork (EV_P) 2055loop_fork (EV_P)
1443{ 2056{
1444#if EV_USE_PORT 2057#if EV_USE_PORT
1445 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2058 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1446#endif 2059#endif
… …
1452#endif 2065#endif
1453#if EV_USE_INOTIFY 2066#if EV_USE_INOTIFY
1454 infy_fork (EV_A); 2067 infy_fork (EV_A);
1455#endif 2068#endif
1456 2069
1457 if (ev_is_active (&pipeev)) 2070 if (ev_is_active (&pipe_w))
1458 { 2071 {
1459 /* this "locks" the handlers against writing to the pipe */ 2072 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1460 /* while we modify the fd vars */
1461 gotsig = 1;
1462#if EV_ASYNC_ENABLE
1463 gotasync = 1;
1464#endif
1465 2073
1466 ev_ref (EV_A); 2074 ev_ref (EV_A);
1467 ev_io_stop (EV_A_ &pipeev); 2075 ev_io_stop (EV_A_ &pipe_w);
1468 2076
1469#if EV_USE_EVENTFD 2077#if EV_USE_EVENTFD
1470 if (evfd >= 0) 2078 if (evfd >= 0)
1471 close (evfd); 2079 close (evfd);
1472#endif 2080#endif
1473 2081
1474 if (evpipe [0] >= 0) 2082 if (evpipe [0] >= 0)
1475 { 2083 {
1476 close (evpipe [0]); 2084 EV_WIN32_CLOSE_FD (evpipe [0]);
1477 close (evpipe [1]); 2085 EV_WIN32_CLOSE_FD (evpipe [1]);
1478 } 2086 }
1479 2087
2088#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1480 evpipe_init (EV_A); 2089 evpipe_init (EV_A);
1481 /* now iterate over everything, in case we missed something */ 2090 /* now iterate over everything, in case we missed something */
1482 pipecb (EV_A_ &pipeev, EV_READ); 2091 pipecb (EV_A_ &pipe_w, EV_READ);
2092#endif
1483 } 2093 }
1484 2094
1485 postfork = 0; 2095 postfork = 0;
1486} 2096}
1487 2097
1488#if EV_MULTIPLICITY 2098#if EV_MULTIPLICITY
2099
1489struct ev_loop * 2100struct ev_loop * ecb_cold
1490ev_loop_new (unsigned int flags) 2101ev_loop_new (unsigned int flags)
1491{ 2102{
1492 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2103 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1493 2104
1494 memset (loop, 0, sizeof (struct ev_loop)); 2105 memset (EV_A, 0, sizeof (struct ev_loop));
1495
1496 loop_init (EV_A_ flags); 2106 loop_init (EV_A_ flags);
1497 2107
1498 if (ev_backend (EV_A)) 2108 if (ev_backend (EV_A))
1499 return loop; 2109 return EV_A;
1500 2110
2111 ev_free (EV_A);
1501 return 0; 2112 return 0;
1502} 2113}
1503 2114
1504void 2115#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 2116
1517#if EV_VERIFY 2117#if EV_VERIFY
1518static void 2118static void noinline ecb_cold
2119verify_watcher (EV_P_ W w)
2120{
2121 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2122
2123 if (w->pending)
2124 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2125}
2126
2127static void noinline ecb_cold
2128verify_heap (EV_P_ ANHE *heap, int N)
2129{
2130 int i;
2131
2132 for (i = HEAP0; i < N + HEAP0; ++i)
2133 {
2134 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
2135 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
2136 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
2137
2138 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2139 }
2140}
2141
2142static void noinline ecb_cold
1519array_check (W **ws, int cnt) 2143array_verify (EV_P_ W *ws, int cnt)
1520{ 2144{
1521 while (cnt--) 2145 while (cnt--)
2146 {
1522 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2147 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
2148 verify_watcher (EV_A_ ws [cnt]);
2149 }
1523} 2150}
2151#endif
1524 2152
1525static void 2153#if EV_FEATURE_API
2154void ecb_cold
1526ev_loop_verify (EV_P) 2155ev_verify (EV_P)
1527{ 2156{
2157#if EV_VERIFY
1528 int i; 2158 int i;
2159 WL w;
1529 2160
2161 assert (activecnt >= -1);
2162
2163 assert (fdchangemax >= fdchangecnt);
2164 for (i = 0; i < fdchangecnt; ++i)
2165 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2166
2167 assert (anfdmax >= 0);
2168 for (i = 0; i < anfdmax; ++i)
2169 for (w = anfds [i].head; w; w = w->next)
2170 {
2171 verify_watcher (EV_A_ (W)w);
2172 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2173 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2174 }
2175
2176 assert (timermax >= timercnt);
1530 checkheap (timers, timercnt); 2177 verify_heap (EV_A_ timers, timercnt);
2178
1531#if EV_PERIODIC_ENABLE 2179#if EV_PERIODIC_ENABLE
2180 assert (periodicmax >= periodiccnt);
1532 checkheap (periodics, periodiccnt); 2181 verify_heap (EV_A_ periodics, periodiccnt);
1533#endif 2182#endif
1534 2183
2184 for (i = NUMPRI; i--; )
2185 {
2186 assert (pendingmax [i] >= pendingcnt [i]);
1535#if EV_IDLE_ENABLE 2187#if EV_IDLE_ENABLE
1536 for (i = NUMPRI; i--; ) 2188 assert (idleall >= 0);
2189 assert (idlemax [i] >= idlecnt [i]);
1537 array_check ((W **)idles [i], idlecnt [i]); 2190 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1538#endif 2191#endif
2192 }
2193
1539#if EV_FORK_ENABLE 2194#if EV_FORK_ENABLE
2195 assert (forkmax >= forkcnt);
1540 array_check ((W **)forks, forkcnt); 2196 array_verify (EV_A_ (W *)forks, forkcnt);
1541#endif 2197#endif
1542 array_check ((W **)prepares, preparecnt); 2198
1543 array_check ((W **)checks, checkcnt); 2199#if EV_CLEANUP_ENABLE
2200 assert (cleanupmax >= cleanupcnt);
2201 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2202#endif
2203
1544#if EV_ASYNC_ENABLE 2204#if EV_ASYNC_ENABLE
2205 assert (asyncmax >= asynccnt);
1545 array_check ((W **)asyncs, asynccnt); 2206 array_verify (EV_A_ (W *)asyncs, asynccnt);
2207#endif
2208
2209#if EV_PREPARE_ENABLE
2210 assert (preparemax >= preparecnt);
2211 array_verify (EV_A_ (W *)prepares, preparecnt);
2212#endif
2213
2214#if EV_CHECK_ENABLE
2215 assert (checkmax >= checkcnt);
2216 array_verify (EV_A_ (W *)checks, checkcnt);
2217#endif
2218
2219# if 0
2220#if EV_CHILD_ENABLE
2221 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2222 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2223#endif
1546#endif 2224# endif
1547}
1548#endif 2225#endif
1549 2226}
1550#endif 2227#endif
1551 2228
1552#if EV_MULTIPLICITY 2229#if EV_MULTIPLICITY
1553struct ev_loop * 2230struct ev_loop * ecb_cold
1554ev_default_loop_init (unsigned int flags)
1555#else 2231#else
1556int 2232int
2233#endif
1557ev_default_loop (unsigned int flags) 2234ev_default_loop (unsigned int flags)
1558#endif
1559{ 2235{
1560 if (!ev_default_loop_ptr) 2236 if (!ev_default_loop_ptr)
1561 { 2237 {
1562#if EV_MULTIPLICITY 2238#if EV_MULTIPLICITY
1563 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2239 EV_P = ev_default_loop_ptr = &default_loop_struct;
1564#else 2240#else
1565 ev_default_loop_ptr = 1; 2241 ev_default_loop_ptr = 1;
1566#endif 2242#endif
1567 2243
1568 loop_init (EV_A_ flags); 2244 loop_init (EV_A_ flags);
1569 2245
1570 if (ev_backend (EV_A)) 2246 if (ev_backend (EV_A))
1571 { 2247 {
1572#ifndef _WIN32 2248#if EV_CHILD_ENABLE
1573 ev_signal_init (&childev, childcb, SIGCHLD); 2249 ev_signal_init (&childev, childcb, SIGCHLD);
1574 ev_set_priority (&childev, EV_MAXPRI); 2250 ev_set_priority (&childev, EV_MAXPRI);
1575 ev_signal_start (EV_A_ &childev); 2251 ev_signal_start (EV_A_ &childev);
1576 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2252 ev_unref (EV_A); /* child watcher should not keep loop alive */
1577#endif 2253#endif
… …
1582 2258
1583 return ev_default_loop_ptr; 2259 return ev_default_loop_ptr;
1584} 2260}
1585 2261
1586void 2262void
1587ev_default_destroy (void) 2263ev_loop_fork (EV_P)
1588{ 2264{
1589#if EV_MULTIPLICITY
1590 struct ev_loop *loop = ev_default_loop_ptr;
1591#endif
1592
1593#ifndef _WIN32
1594 ev_ref (EV_A); /* child watcher */
1595 ev_signal_stop (EV_A_ &childev);
1596#endif
1597
1598 loop_destroy (EV_A);
1599}
1600
1601void
1602ev_default_fork (void)
1603{
1604#if EV_MULTIPLICITY
1605 struct ev_loop *loop = ev_default_loop_ptr;
1606#endif
1607
1608 if (backend)
1609 postfork = 1; /* must be in line with ev_loop_fork */ 2265 postfork = 1; /* must be in line with ev_default_fork */
1610} 2266}
1611 2267
1612/*****************************************************************************/ 2268/*****************************************************************************/
1613 2269
1614void 2270void
1615ev_invoke (EV_P_ void *w, int revents) 2271ev_invoke (EV_P_ void *w, int revents)
1616{ 2272{
1617 EV_CB_INVOKE ((W)w, revents); 2273 EV_CB_INVOKE ((W)w, revents);
1618} 2274}
1619 2275
1620void inline_speed 2276unsigned int
1621call_pending (EV_P) 2277ev_pending_count (EV_P)
1622{ 2278{
1623 int pri; 2279 int pri;
2280 unsigned int count = 0;
1624 2281
1625 EV_FREQUENT_CHECK; 2282 for (pri = NUMPRI; pri--; )
2283 count += pendingcnt [pri];
2284
2285 return count;
2286}
2287
2288void noinline
2289ev_invoke_pending (EV_P)
2290{
2291 int pri;
1626 2292
1627 for (pri = NUMPRI; pri--; ) 2293 for (pri = NUMPRI; pri--; )
1628 while (pendingcnt [pri]) 2294 while (pendingcnt [pri])
1629 { 2295 {
1630 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2296 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1631 2297
1632 if (expect_true (p->w))
1633 {
1634 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1635
1636 p->w->pending = 0; 2298 p->w->pending = 0;
1637 EV_CB_INVOKE (p->w, p->events); 2299 EV_CB_INVOKE (p->w, p->events);
1638 } 2300 EV_FREQUENT_CHECK;
1639 } 2301 }
1640
1641 EV_FREQUENT_CHECK;
1642} 2302}
1643 2303
1644#if EV_IDLE_ENABLE 2304#if EV_IDLE_ENABLE
1645void inline_size 2305/* make idle watchers pending. this handles the "call-idle */
2306/* only when higher priorities are idle" logic */
2307inline_size void
1646idle_reify (EV_P) 2308idle_reify (EV_P)
1647{ 2309{
1648 if (expect_false (idleall)) 2310 if (expect_false (idleall))
1649 { 2311 {
1650 int pri; 2312 int pri;
… …
1662 } 2324 }
1663 } 2325 }
1664} 2326}
1665#endif 2327#endif
1666 2328
1667void inline_size 2329/* make timers pending */
2330inline_size void
1668timers_reify (EV_P) 2331timers_reify (EV_P)
1669{ 2332{
1670 EV_FREQUENT_CHECK; 2333 EV_FREQUENT_CHECK;
1671 2334
1672 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2335 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1673 { 2336 {
1674 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2337 do
1675
1676 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1677
1678 /* first reschedule or stop timer */
1679 if (w->repeat)
1680 { 2338 {
2339 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2340
2341 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2342
2343 /* first reschedule or stop timer */
2344 if (w->repeat)
2345 {
1681 ev_at (w) += w->repeat; 2346 ev_at (w) += w->repeat;
1682 if (ev_at (w) < mn_now) 2347 if (ev_at (w) < mn_now)
1683 ev_at (w) = mn_now; 2348 ev_at (w) = mn_now;
1684 2349
1685 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2350 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1686 2351
1687 ANHE_at_cache (timers [HEAP0]); 2352 ANHE_at_cache (timers [HEAP0]);
1688 downheap (timers, timercnt, HEAP0); 2353 downheap (timers, timercnt, HEAP0);
2354 }
2355 else
2356 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2357
2358 EV_FREQUENT_CHECK;
2359 feed_reverse (EV_A_ (W)w);
1689 } 2360 }
1690 else 2361 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1691 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1692 2362
1693 EV_FREQUENT_CHECK; 2363 feed_reverse_done (EV_A_ EV_TIMER);
1694 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1695 } 2364 }
1696} 2365}
1697 2366
1698#if EV_PERIODIC_ENABLE 2367#if EV_PERIODIC_ENABLE
1699void inline_size 2368
2369static void noinline
2370periodic_recalc (EV_P_ ev_periodic *w)
2371{
2372 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2373 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2374
2375 /* the above almost always errs on the low side */
2376 while (at <= ev_rt_now)
2377 {
2378 ev_tstamp nat = at + w->interval;
2379
2380 /* when resolution fails us, we use ev_rt_now */
2381 if (expect_false (nat == at))
2382 {
2383 at = ev_rt_now;
2384 break;
2385 }
2386
2387 at = nat;
2388 }
2389
2390 ev_at (w) = at;
2391}
2392
2393/* make periodics pending */
2394inline_size void
1700periodics_reify (EV_P) 2395periodics_reify (EV_P)
1701{ 2396{
1702 EV_FREQUENT_CHECK; 2397 EV_FREQUENT_CHECK;
2398
1703 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2399 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1704 { 2400 {
1705 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2401 int feed_count = 0;
1706 2402
1707 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2403 do
1708
1709 /* first reschedule or stop timer */
1710 if (w->reschedule_cb)
1711 { 2404 {
2405 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2406
2407 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2408
2409 /* first reschedule or stop timer */
2410 if (w->reschedule_cb)
2411 {
1712 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2412 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1713 2413
1714 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2414 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1715 2415
1716 ANHE_at_cache (periodics [HEAP0]); 2416 ANHE_at_cache (periodics [HEAP0]);
1717 downheap (periodics, periodiccnt, HEAP0); 2417 downheap (periodics, periodiccnt, HEAP0);
2418 }
2419 else if (w->interval)
2420 {
2421 periodic_recalc (EV_A_ w);
2422 ANHE_at_cache (periodics [HEAP0]);
2423 downheap (periodics, periodiccnt, HEAP0);
2424 }
2425 else
2426 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2427
1718 EV_FREQUENT_CHECK; 2428 EV_FREQUENT_CHECK;
2429 feed_reverse (EV_A_ (W)w);
1719 } 2430 }
1720 else if (w->interval) 2431 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1721 {
1722 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1723 /* if next trigger time is not sufficiently in the future, put it there */
1724 /* this might happen because of floating point inexactness */
1725 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1726 {
1727 ev_at (w) += w->interval;
1728 2432
1729 /* if interval is unreasonably low we might still have a time in the past */
1730 /* so correct this. this will make the periodic very inexact, but the user */
1731 /* has effectively asked to get triggered more often than possible */
1732 if (ev_at (w) < ev_rt_now)
1733 ev_at (w) = ev_rt_now;
1734 }
1735
1736 ANHE_at_cache (periodics [HEAP0]);
1737 downheap (periodics, periodiccnt, HEAP0);
1738 }
1739 else
1740 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1741
1742 EV_FREQUENT_CHECK;
1743 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2433 feed_reverse_done (EV_A_ EV_PERIODIC);
1744 } 2434 }
1745} 2435}
1746 2436
2437/* simply recalculate all periodics */
2438/* TODO: maybe ensure that at least one event happens when jumping forward? */
1747static void noinline 2439static void noinline ecb_cold
1748periodics_reschedule (EV_P) 2440periodics_reschedule (EV_P)
1749{ 2441{
1750 int i; 2442 int i;
1751 2443
1752 /* adjust periodics after time jump */ 2444 /* adjust periodics after time jump */
… …
1755 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2447 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1756 2448
1757 if (w->reschedule_cb) 2449 if (w->reschedule_cb)
1758 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2450 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1759 else if (w->interval) 2451 else if (w->interval)
1760 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2452 periodic_recalc (EV_A_ w);
1761 2453
1762 ANHE_at_cache (periodics [i]); 2454 ANHE_at_cache (periodics [i]);
1763 } 2455 }
1764 2456
1765 reheap (periodics, periodiccnt); 2457 reheap (periodics, periodiccnt);
1766} 2458}
1767#endif 2459#endif
1768 2460
1769void inline_speed 2461/* adjust all timers by a given offset */
2462static void noinline ecb_cold
2463timers_reschedule (EV_P_ ev_tstamp adjust)
2464{
2465 int i;
2466
2467 for (i = 0; i < timercnt; ++i)
2468 {
2469 ANHE *he = timers + i + HEAP0;
2470 ANHE_w (*he)->at += adjust;
2471 ANHE_at_cache (*he);
2472 }
2473}
2474
2475/* fetch new monotonic and realtime times from the kernel */
2476/* also detect if there was a timejump, and act accordingly */
2477inline_speed void
1770time_update (EV_P_ ev_tstamp max_block) 2478time_update (EV_P_ ev_tstamp max_block)
1771{ 2479{
1772 int i;
1773
1774#if EV_USE_MONOTONIC 2480#if EV_USE_MONOTONIC
1775 if (expect_true (have_monotonic)) 2481 if (expect_true (have_monotonic))
1776 { 2482 {
2483 int i;
1777 ev_tstamp odiff = rtmn_diff; 2484 ev_tstamp odiff = rtmn_diff;
1778 2485
1779 mn_now = get_clock (); 2486 mn_now = get_clock ();
1780 2487
1781 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2488 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1797 * doesn't hurt either as we only do this on time-jumps or 2504 * doesn't hurt either as we only do this on time-jumps or
1798 * in the unlikely event of having been preempted here. 2505 * in the unlikely event of having been preempted here.
1799 */ 2506 */
1800 for (i = 4; --i; ) 2507 for (i = 4; --i; )
1801 { 2508 {
2509 ev_tstamp diff;
1802 rtmn_diff = ev_rt_now - mn_now; 2510 rtmn_diff = ev_rt_now - mn_now;
1803 2511
2512 diff = odiff - rtmn_diff;
2513
1804 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2514 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1805 return; /* all is well */ 2515 return; /* all is well */
1806 2516
1807 ev_rt_now = ev_time (); 2517 ev_rt_now = ev_time ();
1808 mn_now = get_clock (); 2518 mn_now = get_clock ();
1809 now_floor = mn_now; 2519 now_floor = mn_now;
1810 } 2520 }
1811 2521
2522 /* no timer adjustment, as the monotonic clock doesn't jump */
2523 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1812# if EV_PERIODIC_ENABLE 2524# if EV_PERIODIC_ENABLE
1813 periodics_reschedule (EV_A); 2525 periodics_reschedule (EV_A);
1814# endif 2526# endif
1815 /* no timer adjustment, as the monotonic clock doesn't jump */
1816 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1817 } 2527 }
1818 else 2528 else
1819#endif 2529#endif
1820 { 2530 {
1821 ev_rt_now = ev_time (); 2531 ev_rt_now = ev_time ();
1822 2532
1823 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2533 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1824 { 2534 {
2535 /* adjust timers. this is easy, as the offset is the same for all of them */
2536 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1825#if EV_PERIODIC_ENABLE 2537#if EV_PERIODIC_ENABLE
1826 periodics_reschedule (EV_A); 2538 periodics_reschedule (EV_A);
1827#endif 2539#endif
1828 /* adjust timers. this is easy, as the offset is the same for all of them */
1829 for (i = 0; i < timercnt; ++i)
1830 {
1831 ANHE *he = timers + i + HEAP0;
1832 ANHE_w (*he)->at += ev_rt_now - mn_now;
1833 ANHE_at_cache (*he);
1834 }
1835 } 2540 }
1836 2541
1837 mn_now = ev_rt_now; 2542 mn_now = ev_rt_now;
1838 } 2543 }
1839} 2544}
1840 2545
1841void 2546void
1842ev_ref (EV_P)
1843{
1844 ++activecnt;
1845}
1846
1847void
1848ev_unref (EV_P)
1849{
1850 --activecnt;
1851}
1852
1853static int loop_done;
1854
1855void
1856ev_loop (EV_P_ int flags) 2547ev_run (EV_P_ int flags)
1857{ 2548{
2549#if EV_FEATURE_API
2550 ++loop_depth;
2551#endif
2552
2553 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2554
1858 loop_done = EVUNLOOP_CANCEL; 2555 loop_done = EVBREAK_CANCEL;
1859 2556
1860 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2557 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1861 2558
1862 do 2559 do
1863 { 2560 {
2561#if EV_VERIFY >= 2
2562 ev_verify (EV_A);
2563#endif
2564
1864#ifndef _WIN32 2565#ifndef _WIN32
1865 if (expect_false (curpid)) /* penalise the forking check even more */ 2566 if (expect_false (curpid)) /* penalise the forking check even more */
1866 if (expect_false (getpid () != curpid)) 2567 if (expect_false (getpid () != curpid))
1867 { 2568 {
1868 curpid = getpid (); 2569 curpid = getpid ();
… …
1874 /* we might have forked, so queue fork handlers */ 2575 /* we might have forked, so queue fork handlers */
1875 if (expect_false (postfork)) 2576 if (expect_false (postfork))
1876 if (forkcnt) 2577 if (forkcnt)
1877 { 2578 {
1878 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2579 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1879 call_pending (EV_A); 2580 EV_INVOKE_PENDING;
1880 } 2581 }
1881#endif 2582#endif
1882 2583
2584#if EV_PREPARE_ENABLE
1883 /* queue prepare watchers (and execute them) */ 2585 /* queue prepare watchers (and execute them) */
1884 if (expect_false (preparecnt)) 2586 if (expect_false (preparecnt))
1885 { 2587 {
1886 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2588 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1887 call_pending (EV_A); 2589 EV_INVOKE_PENDING;
1888 } 2590 }
2591#endif
1889 2592
1890 if (expect_false (!activecnt)) 2593 if (expect_false (loop_done))
1891 break; 2594 break;
1892 2595
1893 /* we might have forked, so reify kernel state if necessary */ 2596 /* we might have forked, so reify kernel state if necessary */
1894 if (expect_false (postfork)) 2597 if (expect_false (postfork))
1895 loop_fork (EV_A); 2598 loop_fork (EV_A);
… …
1900 /* calculate blocking time */ 2603 /* calculate blocking time */
1901 { 2604 {
1902 ev_tstamp waittime = 0.; 2605 ev_tstamp waittime = 0.;
1903 ev_tstamp sleeptime = 0.; 2606 ev_tstamp sleeptime = 0.;
1904 2607
2608 /* remember old timestamp for io_blocktime calculation */
2609 ev_tstamp prev_mn_now = mn_now;
2610
2611 /* update time to cancel out callback processing overhead */
2612 time_update (EV_A_ 1e100);
2613
2614 /* from now on, we want a pipe-wake-up */
2615 pipe_write_wanted = 1;
2616
2617 ECB_MEMORY_FENCE; /* amke sure pipe_write_wanted is visible before we check for potential skips */
2618
1905 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2619 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1906 { 2620 {
1907 /* update time to cancel out callback processing overhead */
1908 time_update (EV_A_ 1e100);
1909
1910 waittime = MAX_BLOCKTIME; 2621 waittime = MAX_BLOCKTIME;
1911 2622
1912 if (timercnt) 2623 if (timercnt)
1913 { 2624 {
1914 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2625 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1915 if (waittime > to) waittime = to; 2626 if (waittime > to) waittime = to;
1916 } 2627 }
1917 2628
1918#if EV_PERIODIC_ENABLE 2629#if EV_PERIODIC_ENABLE
1919 if (periodiccnt) 2630 if (periodiccnt)
1920 { 2631 {
1921 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2632 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1922 if (waittime > to) waittime = to; 2633 if (waittime > to) waittime = to;
1923 } 2634 }
1924#endif 2635#endif
1925 2636
2637 /* don't let timeouts decrease the waittime below timeout_blocktime */
1926 if (expect_false (waittime < timeout_blocktime)) 2638 if (expect_false (waittime < timeout_blocktime))
1927 waittime = timeout_blocktime; 2639 waittime = timeout_blocktime;
1928 2640
1929 sleeptime = waittime - backend_fudge; 2641 /* at this point, we NEED to wait, so we have to ensure */
2642 /* to pass a minimum nonzero value to the backend */
2643 if (expect_false (waittime < backend_mintime))
2644 waittime = backend_mintime;
1930 2645
2646 /* extra check because io_blocktime is commonly 0 */
1931 if (expect_true (sleeptime > io_blocktime)) 2647 if (expect_false (io_blocktime))
1932 sleeptime = io_blocktime;
1933
1934 if (sleeptime)
1935 { 2648 {
2649 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2650
2651 if (sleeptime > waittime - backend_mintime)
2652 sleeptime = waittime - backend_mintime;
2653
2654 if (expect_true (sleeptime > 0.))
2655 {
1936 ev_sleep (sleeptime); 2656 ev_sleep (sleeptime);
1937 waittime -= sleeptime; 2657 waittime -= sleeptime;
2658 }
1938 } 2659 }
1939 } 2660 }
1940 2661
2662#if EV_FEATURE_API
1941 ++loop_count; 2663 ++loop_count;
2664#endif
2665 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1942 backend_poll (EV_A_ waittime); 2666 backend_poll (EV_A_ waittime);
2667 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2668
2669 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2670
2671 if (pipe_write_skipped)
2672 {
2673 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2674 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2675 }
2676
1943 2677
1944 /* update ev_rt_now, do magic */ 2678 /* update ev_rt_now, do magic */
1945 time_update (EV_A_ waittime + sleeptime); 2679 time_update (EV_A_ waittime + sleeptime);
1946 } 2680 }
1947 2681
… …
1954#if EV_IDLE_ENABLE 2688#if EV_IDLE_ENABLE
1955 /* queue idle watchers unless other events are pending */ 2689 /* queue idle watchers unless other events are pending */
1956 idle_reify (EV_A); 2690 idle_reify (EV_A);
1957#endif 2691#endif
1958 2692
2693#if EV_CHECK_ENABLE
1959 /* queue check watchers, to be executed first */ 2694 /* queue check watchers, to be executed first */
1960 if (expect_false (checkcnt)) 2695 if (expect_false (checkcnt))
1961 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2696 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2697#endif
1962 2698
1963 call_pending (EV_A); 2699 EV_INVOKE_PENDING;
1964 } 2700 }
1965 while (expect_true ( 2701 while (expect_true (
1966 activecnt 2702 activecnt
1967 && !loop_done 2703 && !loop_done
1968 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2704 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1969 )); 2705 ));
1970 2706
1971 if (loop_done == EVUNLOOP_ONE) 2707 if (loop_done == EVBREAK_ONE)
1972 loop_done = EVUNLOOP_CANCEL; 2708 loop_done = EVBREAK_CANCEL;
2709
2710#if EV_FEATURE_API
2711 --loop_depth;
2712#endif
1973} 2713}
1974 2714
1975void 2715void
1976ev_unloop (EV_P_ int how) 2716ev_break (EV_P_ int how)
1977{ 2717{
1978 loop_done = how; 2718 loop_done = how;
1979} 2719}
1980 2720
2721void
2722ev_ref (EV_P)
2723{
2724 ++activecnt;
2725}
2726
2727void
2728ev_unref (EV_P)
2729{
2730 --activecnt;
2731}
2732
2733void
2734ev_now_update (EV_P)
2735{
2736 time_update (EV_A_ 1e100);
2737}
2738
2739void
2740ev_suspend (EV_P)
2741{
2742 ev_now_update (EV_A);
2743}
2744
2745void
2746ev_resume (EV_P)
2747{
2748 ev_tstamp mn_prev = mn_now;
2749
2750 ev_now_update (EV_A);
2751 timers_reschedule (EV_A_ mn_now - mn_prev);
2752#if EV_PERIODIC_ENABLE
2753 /* TODO: really do this? */
2754 periodics_reschedule (EV_A);
2755#endif
2756}
2757
1981/*****************************************************************************/ 2758/*****************************************************************************/
2759/* singly-linked list management, used when the expected list length is short */
1982 2760
1983void inline_size 2761inline_size void
1984wlist_add (WL *head, WL elem) 2762wlist_add (WL *head, WL elem)
1985{ 2763{
1986 elem->next = *head; 2764 elem->next = *head;
1987 *head = elem; 2765 *head = elem;
1988} 2766}
1989 2767
1990void inline_size 2768inline_size void
1991wlist_del (WL *head, WL elem) 2769wlist_del (WL *head, WL elem)
1992{ 2770{
1993 while (*head) 2771 while (*head)
1994 { 2772 {
1995 if (*head == elem) 2773 if (expect_true (*head == elem))
1996 { 2774 {
1997 *head = elem->next; 2775 *head = elem->next;
1998 return; 2776 break;
1999 } 2777 }
2000 2778
2001 head = &(*head)->next; 2779 head = &(*head)->next;
2002 } 2780 }
2003} 2781}
2004 2782
2005void inline_speed 2783/* internal, faster, version of ev_clear_pending */
2784inline_speed void
2006clear_pending (EV_P_ W w) 2785clear_pending (EV_P_ W w)
2007{ 2786{
2008 if (w->pending) 2787 if (w->pending)
2009 { 2788 {
2010 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2789 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2011 w->pending = 0; 2790 w->pending = 0;
2012 } 2791 }
2013} 2792}
2014 2793
2015int 2794int
… …
2019 int pending = w_->pending; 2798 int pending = w_->pending;
2020 2799
2021 if (expect_true (pending)) 2800 if (expect_true (pending))
2022 { 2801 {
2023 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2802 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2803 p->w = (W)&pending_w;
2024 w_->pending = 0; 2804 w_->pending = 0;
2025 p->w = 0;
2026 return p->events; 2805 return p->events;
2027 } 2806 }
2028 else 2807 else
2029 return 0; 2808 return 0;
2030} 2809}
2031 2810
2032void inline_size 2811inline_size void
2033pri_adjust (EV_P_ W w) 2812pri_adjust (EV_P_ W w)
2034{ 2813{
2035 int pri = w->priority; 2814 int pri = ev_priority (w);
2036 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2815 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2037 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2816 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2038 w->priority = pri; 2817 ev_set_priority (w, pri);
2039} 2818}
2040 2819
2041void inline_speed 2820inline_speed void
2042ev_start (EV_P_ W w, int active) 2821ev_start (EV_P_ W w, int active)
2043{ 2822{
2044 pri_adjust (EV_A_ w); 2823 pri_adjust (EV_A_ w);
2045 w->active = active; 2824 w->active = active;
2046 ev_ref (EV_A); 2825 ev_ref (EV_A);
2047} 2826}
2048 2827
2049void inline_size 2828inline_size void
2050ev_stop (EV_P_ W w) 2829ev_stop (EV_P_ W w)
2051{ 2830{
2052 ev_unref (EV_A); 2831 ev_unref (EV_A);
2053 w->active = 0; 2832 w->active = 0;
2054} 2833}
… …
2061 int fd = w->fd; 2840 int fd = w->fd;
2062 2841
2063 if (expect_false (ev_is_active (w))) 2842 if (expect_false (ev_is_active (w)))
2064 return; 2843 return;
2065 2844
2066 assert (("ev_io_start called with negative fd", fd >= 0)); 2845 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2846 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2067 2847
2068 EV_FREQUENT_CHECK; 2848 EV_FREQUENT_CHECK;
2069 2849
2070 ev_start (EV_A_ (W)w, 1); 2850 ev_start (EV_A_ (W)w, 1);
2071 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2851 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2072 wlist_add (&anfds[fd].head, (WL)w); 2852 wlist_add (&anfds[fd].head, (WL)w);
2073 2853
2074 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2854 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2075 w->events &= ~EV_IOFDSET; 2855 w->events &= ~EV__IOFDSET;
2076 2856
2077 EV_FREQUENT_CHECK; 2857 EV_FREQUENT_CHECK;
2078} 2858}
2079 2859
2080void noinline 2860void noinline
… …
2082{ 2862{
2083 clear_pending (EV_A_ (W)w); 2863 clear_pending (EV_A_ (W)w);
2084 if (expect_false (!ev_is_active (w))) 2864 if (expect_false (!ev_is_active (w)))
2085 return; 2865 return;
2086 2866
2087 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2867 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2088 2868
2089 EV_FREQUENT_CHECK; 2869 EV_FREQUENT_CHECK;
2090 2870
2091 wlist_del (&anfds[w->fd].head, (WL)w); 2871 wlist_del (&anfds[w->fd].head, (WL)w);
2092 ev_stop (EV_A_ (W)w); 2872 ev_stop (EV_A_ (W)w);
2093 2873
2094 fd_change (EV_A_ w->fd, 1); 2874 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2095 2875
2096 EV_FREQUENT_CHECK; 2876 EV_FREQUENT_CHECK;
2097} 2877}
2098 2878
2099void noinline 2879void noinline
… …
2102 if (expect_false (ev_is_active (w))) 2882 if (expect_false (ev_is_active (w)))
2103 return; 2883 return;
2104 2884
2105 ev_at (w) += mn_now; 2885 ev_at (w) += mn_now;
2106 2886
2107 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2887 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2108 2888
2109 EV_FREQUENT_CHECK; 2889 EV_FREQUENT_CHECK;
2110 2890
2111 ++timercnt; 2891 ++timercnt;
2112 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2892 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2115 ANHE_at_cache (timers [ev_active (w)]); 2895 ANHE_at_cache (timers [ev_active (w)]);
2116 upheap (timers, ev_active (w)); 2896 upheap (timers, ev_active (w));
2117 2897
2118 EV_FREQUENT_CHECK; 2898 EV_FREQUENT_CHECK;
2119 2899
2120 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2900 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2121} 2901}
2122 2902
2123void noinline 2903void noinline
2124ev_timer_stop (EV_P_ ev_timer *w) 2904ev_timer_stop (EV_P_ ev_timer *w)
2125{ 2905{
… …
2130 EV_FREQUENT_CHECK; 2910 EV_FREQUENT_CHECK;
2131 2911
2132 { 2912 {
2133 int active = ev_active (w); 2913 int active = ev_active (w);
2134 2914
2135 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2915 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2136 2916
2137 --timercnt; 2917 --timercnt;
2138 2918
2139 if (expect_true (active < timercnt + HEAP0)) 2919 if (expect_true (active < timercnt + HEAP0))
2140 { 2920 {
2141 timers [active] = timers [timercnt + HEAP0]; 2921 timers [active] = timers [timercnt + HEAP0];
2142 adjustheap (timers, timercnt, active); 2922 adjustheap (timers, timercnt, active);
2143 } 2923 }
2144 } 2924 }
2145 2925
2146 EV_FREQUENT_CHECK;
2147
2148 ev_at (w) -= mn_now; 2926 ev_at (w) -= mn_now;
2149 2927
2150 ev_stop (EV_A_ (W)w); 2928 ev_stop (EV_A_ (W)w);
2929
2930 EV_FREQUENT_CHECK;
2151} 2931}
2152 2932
2153void noinline 2933void noinline
2154ev_timer_again (EV_P_ ev_timer *w) 2934ev_timer_again (EV_P_ ev_timer *w)
2155{ 2935{
… …
2173 } 2953 }
2174 2954
2175 EV_FREQUENT_CHECK; 2955 EV_FREQUENT_CHECK;
2176} 2956}
2177 2957
2958ev_tstamp
2959ev_timer_remaining (EV_P_ ev_timer *w)
2960{
2961 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2962}
2963
2178#if EV_PERIODIC_ENABLE 2964#if EV_PERIODIC_ENABLE
2179void noinline 2965void noinline
2180ev_periodic_start (EV_P_ ev_periodic *w) 2966ev_periodic_start (EV_P_ ev_periodic *w)
2181{ 2967{
2182 if (expect_false (ev_is_active (w))) 2968 if (expect_false (ev_is_active (w)))
… …
2184 2970
2185 if (w->reschedule_cb) 2971 if (w->reschedule_cb)
2186 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2972 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2187 else if (w->interval) 2973 else if (w->interval)
2188 { 2974 {
2189 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2975 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2190 /* this formula differs from the one in periodic_reify because we do not always round up */ 2976 periodic_recalc (EV_A_ w);
2191 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2192 } 2977 }
2193 else 2978 else
2194 ev_at (w) = w->offset; 2979 ev_at (w) = w->offset;
2195 2980
2196 EV_FREQUENT_CHECK; 2981 EV_FREQUENT_CHECK;
… …
2202 ANHE_at_cache (periodics [ev_active (w)]); 2987 ANHE_at_cache (periodics [ev_active (w)]);
2203 upheap (periodics, ev_active (w)); 2988 upheap (periodics, ev_active (w));
2204 2989
2205 EV_FREQUENT_CHECK; 2990 EV_FREQUENT_CHECK;
2206 2991
2207 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2992 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2208} 2993}
2209 2994
2210void noinline 2995void noinline
2211ev_periodic_stop (EV_P_ ev_periodic *w) 2996ev_periodic_stop (EV_P_ ev_periodic *w)
2212{ 2997{
… …
2217 EV_FREQUENT_CHECK; 3002 EV_FREQUENT_CHECK;
2218 3003
2219 { 3004 {
2220 int active = ev_active (w); 3005 int active = ev_active (w);
2221 3006
2222 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 3007 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2223 3008
2224 --periodiccnt; 3009 --periodiccnt;
2225 3010
2226 if (expect_true (active < periodiccnt + HEAP0)) 3011 if (expect_true (active < periodiccnt + HEAP0))
2227 { 3012 {
2228 periodics [active] = periodics [periodiccnt + HEAP0]; 3013 periodics [active] = periodics [periodiccnt + HEAP0];
2229 adjustheap (periodics, periodiccnt, active); 3014 adjustheap (periodics, periodiccnt, active);
2230 } 3015 }
2231 } 3016 }
2232 3017
2233 EV_FREQUENT_CHECK;
2234
2235 ev_stop (EV_A_ (W)w); 3018 ev_stop (EV_A_ (W)w);
3019
3020 EV_FREQUENT_CHECK;
2236} 3021}
2237 3022
2238void noinline 3023void noinline
2239ev_periodic_again (EV_P_ ev_periodic *w) 3024ev_periodic_again (EV_P_ ev_periodic *w)
2240{ 3025{
… …
2246 3031
2247#ifndef SA_RESTART 3032#ifndef SA_RESTART
2248# define SA_RESTART 0 3033# define SA_RESTART 0
2249#endif 3034#endif
2250 3035
3036#if EV_SIGNAL_ENABLE
3037
2251void noinline 3038void noinline
2252ev_signal_start (EV_P_ ev_signal *w) 3039ev_signal_start (EV_P_ ev_signal *w)
2253{ 3040{
2254#if EV_MULTIPLICITY
2255 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2256#endif
2257 if (expect_false (ev_is_active (w))) 3041 if (expect_false (ev_is_active (w)))
2258 return; 3042 return;
2259 3043
2260 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3044 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2261 3045
2262 evpipe_init (EV_A); 3046#if EV_MULTIPLICITY
3047 assert (("libev: a signal must not be attached to two different loops",
3048 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2263 3049
2264 EV_FREQUENT_CHECK; 3050 signals [w->signum - 1].loop = EV_A;
3051#endif
2265 3052
3053 EV_FREQUENT_CHECK;
3054
3055#if EV_USE_SIGNALFD
3056 if (sigfd == -2)
2266 { 3057 {
2267#ifndef _WIN32 3058 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2268 sigset_t full, prev; 3059 if (sigfd < 0 && errno == EINVAL)
2269 sigfillset (&full); 3060 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2270 sigprocmask (SIG_SETMASK, &full, &prev);
2271#endif
2272 3061
2273 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3062 if (sigfd >= 0)
3063 {
3064 fd_intern (sigfd); /* doing it twice will not hurt */
2274 3065
2275#ifndef _WIN32 3066 sigemptyset (&sigfd_set);
2276 sigprocmask (SIG_SETMASK, &prev, 0); 3067
2277#endif 3068 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3069 ev_set_priority (&sigfd_w, EV_MAXPRI);
3070 ev_io_start (EV_A_ &sigfd_w);
3071 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3072 }
2278 } 3073 }
3074
3075 if (sigfd >= 0)
3076 {
3077 /* TODO: check .head */
3078 sigaddset (&sigfd_set, w->signum);
3079 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3080
3081 signalfd (sigfd, &sigfd_set, 0);
3082 }
3083#endif
2279 3084
2280 ev_start (EV_A_ (W)w, 1); 3085 ev_start (EV_A_ (W)w, 1);
2281 wlist_add (&signals [w->signum - 1].head, (WL)w); 3086 wlist_add (&signals [w->signum - 1].head, (WL)w);
2282 3087
2283 if (!((WL)w)->next) 3088 if (!((WL)w)->next)
3089# if EV_USE_SIGNALFD
3090 if (sigfd < 0) /*TODO*/
3091# endif
2284 { 3092 {
2285#if _WIN32 3093# ifdef _WIN32
3094 evpipe_init (EV_A);
3095
2286 signal (w->signum, ev_sighandler); 3096 signal (w->signum, ev_sighandler);
2287#else 3097# else
2288 struct sigaction sa; 3098 struct sigaction sa;
3099
3100 evpipe_init (EV_A);
3101
2289 sa.sa_handler = ev_sighandler; 3102 sa.sa_handler = ev_sighandler;
2290 sigfillset (&sa.sa_mask); 3103 sigfillset (&sa.sa_mask);
2291 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3104 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2292 sigaction (w->signum, &sa, 0); 3105 sigaction (w->signum, &sa, 0);
3106
3107 if (origflags & EVFLAG_NOSIGMASK)
3108 {
3109 sigemptyset (&sa.sa_mask);
3110 sigaddset (&sa.sa_mask, w->signum);
3111 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3112 }
2293#endif 3113#endif
2294 } 3114 }
2295 3115
2296 EV_FREQUENT_CHECK; 3116 EV_FREQUENT_CHECK;
2297} 3117}
2298 3118
2299void noinline 3119void noinline
… …
2307 3127
2308 wlist_del (&signals [w->signum - 1].head, (WL)w); 3128 wlist_del (&signals [w->signum - 1].head, (WL)w);
2309 ev_stop (EV_A_ (W)w); 3129 ev_stop (EV_A_ (W)w);
2310 3130
2311 if (!signals [w->signum - 1].head) 3131 if (!signals [w->signum - 1].head)
3132 {
3133#if EV_MULTIPLICITY
3134 signals [w->signum - 1].loop = 0; /* unattach from signal */
3135#endif
3136#if EV_USE_SIGNALFD
3137 if (sigfd >= 0)
3138 {
3139 sigset_t ss;
3140
3141 sigemptyset (&ss);
3142 sigaddset (&ss, w->signum);
3143 sigdelset (&sigfd_set, w->signum);
3144
3145 signalfd (sigfd, &sigfd_set, 0);
3146 sigprocmask (SIG_UNBLOCK, &ss, 0);
3147 }
3148 else
3149#endif
2312 signal (w->signum, SIG_DFL); 3150 signal (w->signum, SIG_DFL);
3151 }
2313 3152
2314 EV_FREQUENT_CHECK; 3153 EV_FREQUENT_CHECK;
2315} 3154}
3155
3156#endif
3157
3158#if EV_CHILD_ENABLE
2316 3159
2317void 3160void
2318ev_child_start (EV_P_ ev_child *w) 3161ev_child_start (EV_P_ ev_child *w)
2319{ 3162{
2320#if EV_MULTIPLICITY 3163#if EV_MULTIPLICITY
2321 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3164 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2322#endif 3165#endif
2323 if (expect_false (ev_is_active (w))) 3166 if (expect_false (ev_is_active (w)))
2324 return; 3167 return;
2325 3168
2326 EV_FREQUENT_CHECK; 3169 EV_FREQUENT_CHECK;
2327 3170
2328 ev_start (EV_A_ (W)w, 1); 3171 ev_start (EV_A_ (W)w, 1);
2329 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3172 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2330 3173
2331 EV_FREQUENT_CHECK; 3174 EV_FREQUENT_CHECK;
2332} 3175}
2333 3176
2334void 3177void
… …
2338 if (expect_false (!ev_is_active (w))) 3181 if (expect_false (!ev_is_active (w)))
2339 return; 3182 return;
2340 3183
2341 EV_FREQUENT_CHECK; 3184 EV_FREQUENT_CHECK;
2342 3185
2343 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3186 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2344 ev_stop (EV_A_ (W)w); 3187 ev_stop (EV_A_ (W)w);
2345 3188
2346 EV_FREQUENT_CHECK; 3189 EV_FREQUENT_CHECK;
2347} 3190}
3191
3192#endif
2348 3193
2349#if EV_STAT_ENABLE 3194#if EV_STAT_ENABLE
2350 3195
2351# ifdef _WIN32 3196# ifdef _WIN32
2352# undef lstat 3197# undef lstat
2353# define lstat(a,b) _stati64 (a,b) 3198# define lstat(a,b) _stati64 (a,b)
2354# endif 3199# endif
2355 3200
2356#define DEF_STAT_INTERVAL 5.0074891 3201#define DEF_STAT_INTERVAL 5.0074891
3202#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2357#define MIN_STAT_INTERVAL 0.1074891 3203#define MIN_STAT_INTERVAL 0.1074891
2358 3204
2359static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3205static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2360 3206
2361#if EV_USE_INOTIFY 3207#if EV_USE_INOTIFY
2362# define EV_INOTIFY_BUFSIZE 8192 3208
3209/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3210# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2363 3211
2364static void noinline 3212static void noinline
2365infy_add (EV_P_ ev_stat *w) 3213infy_add (EV_P_ ev_stat *w)
2366{ 3214{
2367 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); 3215 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);
2368 3216
2369 if (w->wd < 0) 3217 if (w->wd >= 0)
3218 {
3219 struct statfs sfs;
3220
3221 /* now local changes will be tracked by inotify, but remote changes won't */
3222 /* unless the filesystem is known to be local, we therefore still poll */
3223 /* also do poll on <2.6.25, but with normal frequency */
3224
3225 if (!fs_2625)
3226 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3227 else if (!statfs (w->path, &sfs)
3228 && (sfs.f_type == 0x1373 /* devfs */
3229 || sfs.f_type == 0xEF53 /* ext2/3 */
3230 || sfs.f_type == 0x3153464a /* jfs */
3231 || sfs.f_type == 0x52654973 /* reiser3 */
3232 || sfs.f_type == 0x01021994 /* tempfs */
3233 || sfs.f_type == 0x58465342 /* xfs */))
3234 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3235 else
3236 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2370 { 3237 }
2371 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3238 else
3239 {
3240 /* can't use inotify, continue to stat */
3241 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2372 3242
2373 /* monitor some parent directory for speedup hints */ 3243 /* if path is not there, monitor some parent directory for speedup hints */
2374 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3244 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2375 /* but an efficiency issue only */ 3245 /* but an efficiency issue only */
2376 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3246 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2377 { 3247 {
2378 char path [4096]; 3248 char path [4096];
2379 strcpy (path, w->path); 3249 strcpy (path, w->path);
… …
2383 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3253 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2384 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3254 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2385 3255
2386 char *pend = strrchr (path, '/'); 3256 char *pend = strrchr (path, '/');
2387 3257
2388 if (!pend) 3258 if (!pend || pend == path)
2389 break; /* whoops, no '/', complain to your admin */ 3259 break;
2390 3260
2391 *pend = 0; 3261 *pend = 0;
2392 w->wd = inotify_add_watch (fs_fd, path, mask); 3262 w->wd = inotify_add_watch (fs_fd, path, mask);
2393 } 3263 }
2394 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3264 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2395 } 3265 }
2396 } 3266 }
2397 else
2398 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2399 3267
2400 if (w->wd >= 0) 3268 if (w->wd >= 0)
2401 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3269 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3270
3271 /* now re-arm timer, if required */
3272 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3273 ev_timer_again (EV_A_ &w->timer);
3274 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2402} 3275}
2403 3276
2404static void noinline 3277static void noinline
2405infy_del (EV_P_ ev_stat *w) 3278infy_del (EV_P_ ev_stat *w)
2406{ 3279{
… …
2409 3282
2410 if (wd < 0) 3283 if (wd < 0)
2411 return; 3284 return;
2412 3285
2413 w->wd = -2; 3286 w->wd = -2;
2414 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3287 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2415 wlist_del (&fs_hash [slot].head, (WL)w); 3288 wlist_del (&fs_hash [slot].head, (WL)w);
2416 3289
2417 /* remove this watcher, if others are watching it, they will rearm */ 3290 /* remove this watcher, if others are watching it, they will rearm */
2418 inotify_rm_watch (fs_fd, wd); 3291 inotify_rm_watch (fs_fd, wd);
2419} 3292}
2420 3293
2421static void noinline 3294static void noinline
2422infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3295infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2423{ 3296{
2424 if (slot < 0) 3297 if (slot < 0)
2425 /* overflow, need to check for all hahs slots */ 3298 /* overflow, need to check for all hash slots */
2426 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3299 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2427 infy_wd (EV_A_ slot, wd, ev); 3300 infy_wd (EV_A_ slot, wd, ev);
2428 else 3301 else
2429 { 3302 {
2430 WL w_; 3303 WL w_;
2431 3304
2432 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3305 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2433 { 3306 {
2434 ev_stat *w = (ev_stat *)w_; 3307 ev_stat *w = (ev_stat *)w_;
2435 w_ = w_->next; /* lets us remove this watcher and all before it */ 3308 w_ = w_->next; /* lets us remove this watcher and all before it */
2436 3309
2437 if (w->wd == wd || wd == -1) 3310 if (w->wd == wd || wd == -1)
2438 { 3311 {
2439 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3312 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2440 { 3313 {
3314 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2441 w->wd = -1; 3315 w->wd = -1;
2442 infy_add (EV_A_ w); /* re-add, no matter what */ 3316 infy_add (EV_A_ w); /* re-add, no matter what */
2443 } 3317 }
2444 3318
2445 stat_timer_cb (EV_A_ &w->timer, 0); 3319 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2450 3324
2451static void 3325static void
2452infy_cb (EV_P_ ev_io *w, int revents) 3326infy_cb (EV_P_ ev_io *w, int revents)
2453{ 3327{
2454 char buf [EV_INOTIFY_BUFSIZE]; 3328 char buf [EV_INOTIFY_BUFSIZE];
2455 struct inotify_event *ev = (struct inotify_event *)buf;
2456 int ofs; 3329 int ofs;
2457 int len = read (fs_fd, buf, sizeof (buf)); 3330 int len = read (fs_fd, buf, sizeof (buf));
2458 3331
2459 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3332 for (ofs = 0; ofs < len; )
3333 {
3334 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2460 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3335 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3336 ofs += sizeof (struct inotify_event) + ev->len;
3337 }
2461} 3338}
2462 3339
2463void inline_size 3340inline_size void ecb_cold
3341ev_check_2625 (EV_P)
3342{
3343 /* kernels < 2.6.25 are borked
3344 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3345 */
3346 if (ev_linux_version () < 0x020619)
3347 return;
3348
3349 fs_2625 = 1;
3350}
3351
3352inline_size int
3353infy_newfd (void)
3354{
3355#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3356 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3357 if (fd >= 0)
3358 return fd;
3359#endif
3360 return inotify_init ();
3361}
3362
3363inline_size void
2464infy_init (EV_P) 3364infy_init (EV_P)
2465{ 3365{
2466 if (fs_fd != -2) 3366 if (fs_fd != -2)
2467 return; 3367 return;
2468 3368
3369 fs_fd = -1;
3370
3371 ev_check_2625 (EV_A);
3372
2469 fs_fd = inotify_init (); 3373 fs_fd = infy_newfd ();
2470 3374
2471 if (fs_fd >= 0) 3375 if (fs_fd >= 0)
2472 { 3376 {
3377 fd_intern (fs_fd);
2473 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3378 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2474 ev_set_priority (&fs_w, EV_MAXPRI); 3379 ev_set_priority (&fs_w, EV_MAXPRI);
2475 ev_io_start (EV_A_ &fs_w); 3380 ev_io_start (EV_A_ &fs_w);
3381 ev_unref (EV_A);
2476 } 3382 }
2477} 3383}
2478 3384
2479void inline_size 3385inline_size void
2480infy_fork (EV_P) 3386infy_fork (EV_P)
2481{ 3387{
2482 int slot; 3388 int slot;
2483 3389
2484 if (fs_fd < 0) 3390 if (fs_fd < 0)
2485 return; 3391 return;
2486 3392
3393 ev_ref (EV_A);
3394 ev_io_stop (EV_A_ &fs_w);
2487 close (fs_fd); 3395 close (fs_fd);
2488 fs_fd = inotify_init (); 3396 fs_fd = infy_newfd ();
2489 3397
3398 if (fs_fd >= 0)
3399 {
3400 fd_intern (fs_fd);
3401 ev_io_set (&fs_w, fs_fd, EV_READ);
3402 ev_io_start (EV_A_ &fs_w);
3403 ev_unref (EV_A);
3404 }
3405
2490 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3406 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2491 { 3407 {
2492 WL w_ = fs_hash [slot].head; 3408 WL w_ = fs_hash [slot].head;
2493 fs_hash [slot].head = 0; 3409 fs_hash [slot].head = 0;
2494 3410
2495 while (w_) 3411 while (w_)
… …
2500 w->wd = -1; 3416 w->wd = -1;
2501 3417
2502 if (fs_fd >= 0) 3418 if (fs_fd >= 0)
2503 infy_add (EV_A_ w); /* re-add, no matter what */ 3419 infy_add (EV_A_ w); /* re-add, no matter what */
2504 else 3420 else
3421 {
3422 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3423 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2505 ev_timer_start (EV_A_ &w->timer); 3424 ev_timer_again (EV_A_ &w->timer);
3425 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3426 }
2506 } 3427 }
2507
2508 } 3428 }
2509} 3429}
2510 3430
3431#endif
3432
3433#ifdef _WIN32
3434# define EV_LSTAT(p,b) _stati64 (p, b)
3435#else
3436# define EV_LSTAT(p,b) lstat (p, b)
2511#endif 3437#endif
2512 3438
2513void 3439void
2514ev_stat_stat (EV_P_ ev_stat *w) 3440ev_stat_stat (EV_P_ ev_stat *w)
2515{ 3441{
… …
2522static void noinline 3448static void noinline
2523stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3449stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2524{ 3450{
2525 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3451 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2526 3452
2527 /* we copy this here each the time so that */ 3453 ev_statdata prev = w->attr;
2528 /* prev has the old value when the callback gets invoked */
2529 w->prev = w->attr;
2530 ev_stat_stat (EV_A_ w); 3454 ev_stat_stat (EV_A_ w);
2531 3455
2532 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3456 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2533 if ( 3457 if (
2534 w->prev.st_dev != w->attr.st_dev 3458 prev.st_dev != w->attr.st_dev
2535 || w->prev.st_ino != w->attr.st_ino 3459 || prev.st_ino != w->attr.st_ino
2536 || w->prev.st_mode != w->attr.st_mode 3460 || prev.st_mode != w->attr.st_mode
2537 || w->prev.st_nlink != w->attr.st_nlink 3461 || prev.st_nlink != w->attr.st_nlink
2538 || w->prev.st_uid != w->attr.st_uid 3462 || prev.st_uid != w->attr.st_uid
2539 || w->prev.st_gid != w->attr.st_gid 3463 || prev.st_gid != w->attr.st_gid
2540 || w->prev.st_rdev != w->attr.st_rdev 3464 || prev.st_rdev != w->attr.st_rdev
2541 || w->prev.st_size != w->attr.st_size 3465 || prev.st_size != w->attr.st_size
2542 || w->prev.st_atime != w->attr.st_atime 3466 || prev.st_atime != w->attr.st_atime
2543 || w->prev.st_mtime != w->attr.st_mtime 3467 || prev.st_mtime != w->attr.st_mtime
2544 || w->prev.st_ctime != w->attr.st_ctime 3468 || prev.st_ctime != w->attr.st_ctime
2545 ) { 3469 ) {
3470 /* we only update w->prev on actual differences */
3471 /* in case we test more often than invoke the callback, */
3472 /* to ensure that prev is always different to attr */
3473 w->prev = prev;
3474
2546 #if EV_USE_INOTIFY 3475 #if EV_USE_INOTIFY
3476 if (fs_fd >= 0)
3477 {
2547 infy_del (EV_A_ w); 3478 infy_del (EV_A_ w);
2548 infy_add (EV_A_ w); 3479 infy_add (EV_A_ w);
2549 ev_stat_stat (EV_A_ w); /* avoid race... */ 3480 ev_stat_stat (EV_A_ w); /* avoid race... */
3481 }
2550 #endif 3482 #endif
2551 3483
2552 ev_feed_event (EV_A_ w, EV_STAT); 3484 ev_feed_event (EV_A_ w, EV_STAT);
2553 } 3485 }
2554} 3486}
… …
2557ev_stat_start (EV_P_ ev_stat *w) 3489ev_stat_start (EV_P_ ev_stat *w)
2558{ 3490{
2559 if (expect_false (ev_is_active (w))) 3491 if (expect_false (ev_is_active (w)))
2560 return; 3492 return;
2561 3493
2562 /* since we use memcmp, we need to clear any padding data etc. */
2563 memset (&w->prev, 0, sizeof (ev_statdata));
2564 memset (&w->attr, 0, sizeof (ev_statdata));
2565
2566 ev_stat_stat (EV_A_ w); 3494 ev_stat_stat (EV_A_ w);
2567 3495
3496 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2568 if (w->interval < MIN_STAT_INTERVAL) 3497 w->interval = MIN_STAT_INTERVAL;
2569 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2570 3498
2571 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3499 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2572 ev_set_priority (&w->timer, ev_priority (w)); 3500 ev_set_priority (&w->timer, ev_priority (w));
2573 3501
2574#if EV_USE_INOTIFY 3502#if EV_USE_INOTIFY
2575 infy_init (EV_A); 3503 infy_init (EV_A);
2576 3504
2577 if (fs_fd >= 0) 3505 if (fs_fd >= 0)
2578 infy_add (EV_A_ w); 3506 infy_add (EV_A_ w);
2579 else 3507 else
2580#endif 3508#endif
3509 {
2581 ev_timer_start (EV_A_ &w->timer); 3510 ev_timer_again (EV_A_ &w->timer);
3511 ev_unref (EV_A);
3512 }
2582 3513
2583 ev_start (EV_A_ (W)w, 1); 3514 ev_start (EV_A_ (W)w, 1);
2584 3515
2585 EV_FREQUENT_CHECK; 3516 EV_FREQUENT_CHECK;
2586} 3517}
… …
2595 EV_FREQUENT_CHECK; 3526 EV_FREQUENT_CHECK;
2596 3527
2597#if EV_USE_INOTIFY 3528#if EV_USE_INOTIFY
2598 infy_del (EV_A_ w); 3529 infy_del (EV_A_ w);
2599#endif 3530#endif
3531
3532 if (ev_is_active (&w->timer))
3533 {
3534 ev_ref (EV_A);
2600 ev_timer_stop (EV_A_ &w->timer); 3535 ev_timer_stop (EV_A_ &w->timer);
3536 }
2601 3537
2602 ev_stop (EV_A_ (W)w); 3538 ev_stop (EV_A_ (W)w);
2603 3539
2604 EV_FREQUENT_CHECK; 3540 EV_FREQUENT_CHECK;
2605} 3541}
… …
2650 3586
2651 EV_FREQUENT_CHECK; 3587 EV_FREQUENT_CHECK;
2652} 3588}
2653#endif 3589#endif
2654 3590
3591#if EV_PREPARE_ENABLE
2655void 3592void
2656ev_prepare_start (EV_P_ ev_prepare *w) 3593ev_prepare_start (EV_P_ ev_prepare *w)
2657{ 3594{
2658 if (expect_false (ev_is_active (w))) 3595 if (expect_false (ev_is_active (w)))
2659 return; 3596 return;
… …
2685 3622
2686 ev_stop (EV_A_ (W)w); 3623 ev_stop (EV_A_ (W)w);
2687 3624
2688 EV_FREQUENT_CHECK; 3625 EV_FREQUENT_CHECK;
2689} 3626}
3627#endif
2690 3628
3629#if EV_CHECK_ENABLE
2691void 3630void
2692ev_check_start (EV_P_ ev_check *w) 3631ev_check_start (EV_P_ ev_check *w)
2693{ 3632{
2694 if (expect_false (ev_is_active (w))) 3633 if (expect_false (ev_is_active (w)))
2695 return; 3634 return;
… …
2721 3660
2722 ev_stop (EV_A_ (W)w); 3661 ev_stop (EV_A_ (W)w);
2723 3662
2724 EV_FREQUENT_CHECK; 3663 EV_FREQUENT_CHECK;
2725} 3664}
3665#endif
2726 3666
2727#if EV_EMBED_ENABLE 3667#if EV_EMBED_ENABLE
2728void noinline 3668void noinline
2729ev_embed_sweep (EV_P_ ev_embed *w) 3669ev_embed_sweep (EV_P_ ev_embed *w)
2730{ 3670{
2731 ev_loop (w->other, EVLOOP_NONBLOCK); 3671 ev_run (w->other, EVRUN_NOWAIT);
2732} 3672}
2733 3673
2734static void 3674static void
2735embed_io_cb (EV_P_ ev_io *io, int revents) 3675embed_io_cb (EV_P_ ev_io *io, int revents)
2736{ 3676{
2737 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3677 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2738 3678
2739 if (ev_cb (w)) 3679 if (ev_cb (w))
2740 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3680 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2741 else 3681 else
2742 ev_loop (w->other, EVLOOP_NONBLOCK); 3682 ev_run (w->other, EVRUN_NOWAIT);
2743} 3683}
2744 3684
2745static void 3685static void
2746embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3686embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2747{ 3687{
2748 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3688 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2749 3689
2750 { 3690 {
2751 struct ev_loop *loop = w->other; 3691 EV_P = w->other;
2752 3692
2753 while (fdchangecnt) 3693 while (fdchangecnt)
2754 { 3694 {
2755 fd_reify (EV_A); 3695 fd_reify (EV_A);
2756 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3696 ev_run (EV_A_ EVRUN_NOWAIT);
2757 } 3697 }
2758 } 3698 }
3699}
3700
3701static void
3702embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3703{
3704 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3705
3706 ev_embed_stop (EV_A_ w);
3707
3708 {
3709 EV_P = w->other;
3710
3711 ev_loop_fork (EV_A);
3712 ev_run (EV_A_ EVRUN_NOWAIT);
3713 }
3714
3715 ev_embed_start (EV_A_ w);
2759} 3716}
2760 3717
2761#if 0 3718#if 0
2762static void 3719static void
2763embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3720embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2771{ 3728{
2772 if (expect_false (ev_is_active (w))) 3729 if (expect_false (ev_is_active (w)))
2773 return; 3730 return;
2774 3731
2775 { 3732 {
2776 struct ev_loop *loop = w->other; 3733 EV_P = w->other;
2777 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3734 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2778 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3735 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2779 } 3736 }
2780 3737
2781 EV_FREQUENT_CHECK; 3738 EV_FREQUENT_CHECK;
2782 3739
… …
2785 3742
2786 ev_prepare_init (&w->prepare, embed_prepare_cb); 3743 ev_prepare_init (&w->prepare, embed_prepare_cb);
2787 ev_set_priority (&w->prepare, EV_MINPRI); 3744 ev_set_priority (&w->prepare, EV_MINPRI);
2788 ev_prepare_start (EV_A_ &w->prepare); 3745 ev_prepare_start (EV_A_ &w->prepare);
2789 3746
3747 ev_fork_init (&w->fork, embed_fork_cb);
3748 ev_fork_start (EV_A_ &w->fork);
3749
2790 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3750 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2791 3751
2792 ev_start (EV_A_ (W)w, 1); 3752 ev_start (EV_A_ (W)w, 1);
2793 3753
2794 EV_FREQUENT_CHECK; 3754 EV_FREQUENT_CHECK;
… …
2801 if (expect_false (!ev_is_active (w))) 3761 if (expect_false (!ev_is_active (w)))
2802 return; 3762 return;
2803 3763
2804 EV_FREQUENT_CHECK; 3764 EV_FREQUENT_CHECK;
2805 3765
2806 ev_io_stop (EV_A_ &w->io); 3766 ev_io_stop (EV_A_ &w->io);
2807 ev_prepare_stop (EV_A_ &w->prepare); 3767 ev_prepare_stop (EV_A_ &w->prepare);
3768 ev_fork_stop (EV_A_ &w->fork);
2808 3769
2809 ev_stop (EV_A_ (W)w); 3770 ev_stop (EV_A_ (W)w);
2810 3771
2811 EV_FREQUENT_CHECK; 3772 EV_FREQUENT_CHECK;
2812} 3773}
… …
2848 3809
2849 EV_FREQUENT_CHECK; 3810 EV_FREQUENT_CHECK;
2850} 3811}
2851#endif 3812#endif
2852 3813
3814#if EV_CLEANUP_ENABLE
3815void
3816ev_cleanup_start (EV_P_ ev_cleanup *w)
3817{
3818 if (expect_false (ev_is_active (w)))
3819 return;
3820
3821 EV_FREQUENT_CHECK;
3822
3823 ev_start (EV_A_ (W)w, ++cleanupcnt);
3824 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3825 cleanups [cleanupcnt - 1] = w;
3826
3827 /* cleanup watchers should never keep a refcount on the loop */
3828 ev_unref (EV_A);
3829 EV_FREQUENT_CHECK;
3830}
3831
3832void
3833ev_cleanup_stop (EV_P_ ev_cleanup *w)
3834{
3835 clear_pending (EV_A_ (W)w);
3836 if (expect_false (!ev_is_active (w)))
3837 return;
3838
3839 EV_FREQUENT_CHECK;
3840 ev_ref (EV_A);
3841
3842 {
3843 int active = ev_active (w);
3844
3845 cleanups [active - 1] = cleanups [--cleanupcnt];
3846 ev_active (cleanups [active - 1]) = active;
3847 }
3848
3849 ev_stop (EV_A_ (W)w);
3850
3851 EV_FREQUENT_CHECK;
3852}
3853#endif
3854
2853#if EV_ASYNC_ENABLE 3855#if EV_ASYNC_ENABLE
2854void 3856void
2855ev_async_start (EV_P_ ev_async *w) 3857ev_async_start (EV_P_ ev_async *w)
2856{ 3858{
2857 if (expect_false (ev_is_active (w))) 3859 if (expect_false (ev_is_active (w)))
2858 return; 3860 return;
2859 3861
3862 w->sent = 0;
3863
2860 evpipe_init (EV_A); 3864 evpipe_init (EV_A);
2861 3865
2862 EV_FREQUENT_CHECK; 3866 EV_FREQUENT_CHECK;
2863 3867
2864 ev_start (EV_A_ (W)w, ++asynccnt); 3868 ev_start (EV_A_ (W)w, ++asynccnt);
… …
2891 3895
2892void 3896void
2893ev_async_send (EV_P_ ev_async *w) 3897ev_async_send (EV_P_ ev_async *w)
2894{ 3898{
2895 w->sent = 1; 3899 w->sent = 1;
2896 evpipe_write (EV_A_ &gotasync); 3900 evpipe_write (EV_A_ &async_pending);
2897} 3901}
2898#endif 3902#endif
2899 3903
2900/*****************************************************************************/ 3904/*****************************************************************************/
2901 3905
… …
2911once_cb (EV_P_ struct ev_once *once, int revents) 3915once_cb (EV_P_ struct ev_once *once, int revents)
2912{ 3916{
2913 void (*cb)(int revents, void *arg) = once->cb; 3917 void (*cb)(int revents, void *arg) = once->cb;
2914 void *arg = once->arg; 3918 void *arg = once->arg;
2915 3919
2916 ev_io_stop (EV_A_ &once->io); 3920 ev_io_stop (EV_A_ &once->io);
2917 ev_timer_stop (EV_A_ &once->to); 3921 ev_timer_stop (EV_A_ &once->to);
2918 ev_free (once); 3922 ev_free (once);
2919 3923
2920 cb (revents, arg); 3924 cb (revents, arg);
2921} 3925}
2922 3926
2923static void 3927static void
2924once_cb_io (EV_P_ ev_io *w, int revents) 3928once_cb_io (EV_P_ ev_io *w, int revents)
2925{ 3929{
2926 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3930 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3931
3932 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2927} 3933}
2928 3934
2929static void 3935static void
2930once_cb_to (EV_P_ ev_timer *w, int revents) 3936once_cb_to (EV_P_ ev_timer *w, int revents)
2931{ 3937{
2932 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3938 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3939
3940 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2933} 3941}
2934 3942
2935void 3943void
2936ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3944ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2937{ 3945{
2938 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3946 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2939 3947
2940 if (expect_false (!once)) 3948 if (expect_false (!once))
2941 { 3949 {
2942 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3950 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2943 return; 3951 return;
2944 } 3952 }
2945 3953
2946 once->cb = cb; 3954 once->cb = cb;
2947 once->arg = arg; 3955 once->arg = arg;
… …
2959 ev_timer_set (&once->to, timeout, 0.); 3967 ev_timer_set (&once->to, timeout, 0.);
2960 ev_timer_start (EV_A_ &once->to); 3968 ev_timer_start (EV_A_ &once->to);
2961 } 3969 }
2962} 3970}
2963 3971
3972/*****************************************************************************/
3973
3974#if EV_WALK_ENABLE
3975void ecb_cold
3976ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3977{
3978 int i, j;
3979 ev_watcher_list *wl, *wn;
3980
3981 if (types & (EV_IO | EV_EMBED))
3982 for (i = 0; i < anfdmax; ++i)
3983 for (wl = anfds [i].head; wl; )
3984 {
3985 wn = wl->next;
3986
3987#if EV_EMBED_ENABLE
3988 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3989 {
3990 if (types & EV_EMBED)
3991 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3992 }
3993 else
3994#endif
3995#if EV_USE_INOTIFY
3996 if (ev_cb ((ev_io *)wl) == infy_cb)
3997 ;
3998 else
3999#endif
4000 if ((ev_io *)wl != &pipe_w)
4001 if (types & EV_IO)
4002 cb (EV_A_ EV_IO, wl);
4003
4004 wl = wn;
4005 }
4006
4007 if (types & (EV_TIMER | EV_STAT))
4008 for (i = timercnt + HEAP0; i-- > HEAP0; )
4009#if EV_STAT_ENABLE
4010 /*TODO: timer is not always active*/
4011 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
4012 {
4013 if (types & EV_STAT)
4014 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
4015 }
4016 else
4017#endif
4018 if (types & EV_TIMER)
4019 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
4020
4021#if EV_PERIODIC_ENABLE
4022 if (types & EV_PERIODIC)
4023 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
4024 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4025#endif
4026
4027#if EV_IDLE_ENABLE
4028 if (types & EV_IDLE)
4029 for (j = NUMPRI; i--; )
4030 for (i = idlecnt [j]; i--; )
4031 cb (EV_A_ EV_IDLE, idles [j][i]);
4032#endif
4033
4034#if EV_FORK_ENABLE
4035 if (types & EV_FORK)
4036 for (i = forkcnt; i--; )
4037 if (ev_cb (forks [i]) != embed_fork_cb)
4038 cb (EV_A_ EV_FORK, forks [i]);
4039#endif
4040
4041#if EV_ASYNC_ENABLE
4042 if (types & EV_ASYNC)
4043 for (i = asynccnt; i--; )
4044 cb (EV_A_ EV_ASYNC, asyncs [i]);
4045#endif
4046
4047#if EV_PREPARE_ENABLE
4048 if (types & EV_PREPARE)
4049 for (i = preparecnt; i--; )
4050# if EV_EMBED_ENABLE
4051 if (ev_cb (prepares [i]) != embed_prepare_cb)
4052# endif
4053 cb (EV_A_ EV_PREPARE, prepares [i]);
4054#endif
4055
4056#if EV_CHECK_ENABLE
4057 if (types & EV_CHECK)
4058 for (i = checkcnt; i--; )
4059 cb (EV_A_ EV_CHECK, checks [i]);
4060#endif
4061
4062#if EV_SIGNAL_ENABLE
4063 if (types & EV_SIGNAL)
4064 for (i = 0; i < EV_NSIG - 1; ++i)
4065 for (wl = signals [i].head; wl; )
4066 {
4067 wn = wl->next;
4068 cb (EV_A_ EV_SIGNAL, wl);
4069 wl = wn;
4070 }
4071#endif
4072
4073#if EV_CHILD_ENABLE
4074 if (types & EV_CHILD)
4075 for (i = (EV_PID_HASHSIZE); i--; )
4076 for (wl = childs [i]; wl; )
4077 {
4078 wn = wl->next;
4079 cb (EV_A_ EV_CHILD, wl);
4080 wl = wn;
4081 }
4082#endif
4083/* EV_STAT 0x00001000 /* stat data changed */
4084/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4085}
4086#endif
4087
2964#if EV_MULTIPLICITY 4088#if EV_MULTIPLICITY
2965 #include "ev_wrap.h" 4089 #include "ev_wrap.h"
2966#endif 4090#endif
2967 4091
2968#ifdef __cplusplus 4092EV_CPP(})
2969}
2970#endif
2971 4093

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