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Comparing libev/ev.c (file contents):
Revision 1.293 by root, Mon Jun 29 18:46:52 2009 UTC vs.
Revision 1.388 by root, Fri Jul 29 12:17:26 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 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
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# 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
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
92# define EV_USE_SELECT 1
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL 1
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
109# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116# define EV_USE_KQUEUE 1
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
124# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
125# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
133# else
134# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
138# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
139# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
140# define EV_USE_EVENTFD 1
141# else
142# define EV_USE_EVENTFD 0
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
154# endif
155
156# if HAVE_EVENTFD
157# ifndef EV_USE_EVENTFD
158# define EV_USE_EVENTFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
144# endif 163# endif
145 164
146#endif 165#endif
147 166
148#include <math.h>
149#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
150#include <fcntl.h> 169#include <fcntl.h>
151#include <stddef.h> 170#include <stddef.h>
152 171
153#include <stdio.h> 172#include <stdio.h>
154 173
155#include <assert.h> 174#include <assert.h>
156#include <errno.h> 175#include <errno.h>
157#include <sys/types.h> 176#include <sys/types.h>
158#include <time.h> 177#include <time.h>
178#include <limits.h>
159 179
160#include <signal.h> 180#include <signal.h>
161 181
162#ifdef EV_H 182#ifdef EV_H
163# include EV_H 183# include EV_H
164#else 184#else
165# include "ev.h" 185# include "ev.h"
166#endif 186#endif
187
188EV_CPP(extern "C" {)
167 189
168#ifndef _WIN32 190#ifndef _WIN32
169# include <sys/time.h> 191# include <sys/time.h>
170# include <sys/wait.h> 192# include <sys/wait.h>
171# include <unistd.h> 193# include <unistd.h>
… …
174# define WIN32_LEAN_AND_MEAN 196# define WIN32_LEAN_AND_MEAN
175# include <windows.h> 197# include <windows.h>
176# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
177# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
178# endif 200# endif
201# undef EV_AVOID_STDIO
179#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
180 211
181/* this block tries to deduce configuration from header-defined symbols and defaults */ 212/* this block tries to deduce configuration from header-defined symbols and defaults */
213
214/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG)
216/* use what's provided */
217#elif defined (NSIG)
218# define EV_NSIG (NSIG)
219#elif defined(_NSIG)
220# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX)
222# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX)
224# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX)
226# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG)
228# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG)
230# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE)
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig)
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else
236# error "unable to find value for NSIG, please report"
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif
241
242#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0
244#endif
182 245
183#ifndef EV_USE_CLOCK_SYSCALL 246#ifndef EV_USE_CLOCK_SYSCALL
184# if __linux && __GLIBC__ >= 2 247# if __linux && __GLIBC__ >= 2
185# define EV_USE_CLOCK_SYSCALL 1 248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186# else 249# else
187# define EV_USE_CLOCK_SYSCALL 0 250# define EV_USE_CLOCK_SYSCALL 0
188# endif 251# endif
189#endif 252#endif
190 253
191#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
192# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
193# define EV_USE_MONOTONIC 1 256# define EV_USE_MONOTONIC EV_FEATURE_OS
194# else 257# else
195# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
196# endif 259# endif
197#endif 260#endif
198 261
… …
200# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201#endif 264#endif
202 265
203#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
204# if _POSIX_C_SOURCE >= 199309L 267# if _POSIX_C_SOURCE >= 199309L
205# define EV_USE_NANOSLEEP 1 268# define EV_USE_NANOSLEEP EV_FEATURE_OS
206# else 269# else
207# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
208# endif 271# endif
209#endif 272#endif
210 273
211#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
212# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
213#endif 276#endif
214 277
215#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
216# ifdef _WIN32 279# ifdef _WIN32
217# define EV_USE_POLL 0 280# define EV_USE_POLL 0
218# else 281# else
219# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
220# endif 283# endif
221#endif 284#endif
222 285
223#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
224# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226# else 289# else
227# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
228# endif 291# endif
229#endif 292#endif
230 293
… …
236# define EV_USE_PORT 0 299# define EV_USE_PORT 0
237#endif 300#endif
238 301
239#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
240# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
242# else 305# else
243# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
244# endif 307# endif
245#endif 308#endif
246 309
247#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
248# if EV_MINIMAL 311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
249# define EV_PID_HASHSIZE 1
250# else
251# define EV_PID_HASHSIZE 16
252# endif
253#endif 312#endif
254 313
255#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
256# if EV_MINIMAL 315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257# define EV_INOTIFY_HASHSIZE 1
258# else
259# define EV_INOTIFY_HASHSIZE 16
260# endif
261#endif 316#endif
262 317
263#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
264# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
266# else 321# else
267# define EV_USE_EVENTFD 0 322# define EV_USE_EVENTFD 0
323# endif
324#endif
325
326#ifndef EV_USE_SIGNALFD
327# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
328# define EV_USE_SIGNALFD EV_FEATURE_OS
329# else
330# define EV_USE_SIGNALFD 0
268# endif 331# endif
269#endif 332#endif
270 333
271#if 0 /* debugging */ 334#if 0 /* debugging */
272# define EV_VERIFY 3 335# define EV_VERIFY 3
273# define EV_USE_4HEAP 1 336# define EV_USE_4HEAP 1
274# define EV_HEAP_CACHE_AT 1 337# define EV_HEAP_CACHE_AT 1
275#endif 338#endif
276 339
277#ifndef EV_VERIFY 340#ifndef EV_VERIFY
278# define EV_VERIFY !EV_MINIMAL 341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279#endif 342#endif
280 343
281#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
282# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
283#endif 346#endif
284 347
285#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
286# define EV_HEAP_CACHE_AT !EV_MINIMAL 349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
287#endif 350#endif
288 351
289/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290/* which makes programs even slower. might work on other unices, too. */ 353/* which makes programs even slower. might work on other unices, too. */
291#if EV_USE_CLOCK_SYSCALL 354#if EV_USE_CLOCK_SYSCALL
… …
300# endif 363# endif
301#endif 364#endif
302 365
303/* 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 */
304 367
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
373
305#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
306# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
307# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
308#endif 377#endif
309 378
… …
316# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
318#endif 387#endif
319 388
320#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
321# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
322# include <sys/select.h> 392# include <sys/select.h>
323# endif 393# endif
324#endif 394#endif
325 395
326#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
327# include <sys/utsname.h>
328# include <sys/statfs.h> 397# include <sys/statfs.h>
329# include <sys/inotify.h> 398# include <sys/inotify.h>
330/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
331# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
332# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
… …
339#endif 408#endif
340 409
341#if EV_USE_EVENTFD 410#if EV_USE_EVENTFD
342/* 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 */
343# include <stdint.h> 412# include <stdint.h>
344# ifdef __cplusplus 413# ifndef EFD_NONBLOCK
345extern "C" { 414# define EFD_NONBLOCK O_NONBLOCK
346# endif 415# endif
347int eventfd (unsigned int initval, int flags); 416# ifndef EFD_CLOEXEC
348# ifdef __cplusplus 417# ifdef O_CLOEXEC
349} 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
350# 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};
351#endif 446#endif
352 447
353/**/ 448/**/
354 449
355#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
356# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
357#else 452#else
358# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
359#endif 454#endif
360 455
361/* 456/*
362 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
363 * It is added to ev_rt_now when scheduling periodics
364 * to ensure progress, time-wise, even when rounding
365 * errors are against us.
366 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
367 * Better solutions welcome.
368 */ 459 */
369#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 */
370 462
371#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) */
372#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) */
373/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
374 465
375#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)
376# 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)
377# 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
378#else 493#else
379# define expect(expr,value) (expr) 494 #define ecb_inline static
380# define noinline
381# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
382# define inline
383# endif 495#endif
496
497#ifndef ECB_MEMORY_FENCE
498 #if ECB_GCC_VERSION(2,5)
499 #if __x86
500 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
501 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
502 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE /* better be safe than sorry */
503 #elif __amd64
504 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
505 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
506 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence")
507 #endif
384#endif 508 #endif
509#endif
385 510
511#ifndef ECB_MEMORY_FENCE
512 #if ECB_GCC_VERSION(4,4)
513 #define ECB_MEMORY_FENCE __sync_synchronize ()
514 #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); })
515 #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); })
516 #elif _MSC_VER >= 1400 && 0 /* TODO: only true when using volatiles */
517 #define ECB_MEMORY_FENCE do { } while (0)
518 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
519 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
520 #elif defined(_WIN32)
521 #include <WinNT.h>
522 #define ECB_MEMORY_FENCE MemoryBarrier ()
523 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
524 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
525 #endif
526#endif
527
528#ifndef ECB_MEMORY_FENCE
529 #include <pthread.h>
530
531 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
532 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
533 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
534 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
535#endif
536
537#if ECB_GCC_VERSION(3,1)
538 #define ecb_attribute(attrlist) __attribute__(attrlist)
539 #define ecb_is_constant(expr) __builtin_constant_p (expr)
540 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
541 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
542#else
543 #define ecb_attribute(attrlist)
544 #define ecb_is_constant(expr) 0
545 #define ecb_expect(expr,value) (expr)
546 #define ecb_prefetch(addr,rw,locality)
547#endif
548
549#define ecb_noinline ecb_attribute ((__noinline__))
550#define ecb_noreturn ecb_attribute ((__noreturn__))
551#define ecb_unused ecb_attribute ((__unused__))
552#define ecb_const ecb_attribute ((__const__))
553#define ecb_pure ecb_attribute ((__pure__))
554
555#if ECB_GCC_VERSION(4,3)
556 #define ecb_artificial ecb_attribute ((__artificial__))
557 #define ecb_hot ecb_attribute ((__hot__))
558 #define ecb_cold ecb_attribute ((__cold__))
559#else
560 #define ecb_artificial
561 #define ecb_hot
562 #define ecb_cold
563#endif
564
565/* put around conditional expressions if you are very sure that the */
566/* expression is mostly true or mostly false. note that these return */
567/* booleans, not the expression. */
386#define expect_false(expr) expect ((expr) != 0, 0) 568#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 569#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
570/* ecb.h end */
571
572#define expect_false(cond) ecb_expect_false (cond)
573#define expect_true(cond) ecb_expect_true (cond)
574#define noinline ecb_noinline
575
388#define inline_size static inline 576#define inline_size ecb_inline
389 577
390#if EV_MINIMAL 578#if EV_FEATURE_CODE
579# define inline_speed ecb_inline
580#else
391# define inline_speed static noinline 581# define inline_speed static noinline
582#endif
583
584#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
585
586#if EV_MINPRI == EV_MAXPRI
587# define ABSPRI(w) (((W)w), 0)
392#else 588#else
393# define inline_speed static inline
394#endif
395
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 589# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
590#endif
398 591
399#define EMPTY /* required for microsofts broken pseudo-c compiler */ 592#define EMPTY /* required for microsofts broken pseudo-c compiler */
400#define EMPTY2(a,b) /* used to suppress some warnings */ 593#define EMPTY2(a,b) /* used to suppress some warnings */
401 594
402typedef ev_watcher *W; 595typedef ev_watcher *W;
… …
406#define ev_active(w) ((W)(w))->active 599#define ev_active(w) ((W)(w))->active
407#define ev_at(w) ((WT)(w))->at 600#define ev_at(w) ((WT)(w))->at
408 601
409#if EV_USE_REALTIME 602#if EV_USE_REALTIME
410/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 603/* sig_atomic_t is used to avoid per-thread variables or locking but still */
411/* giving it a reasonably high chance of working on typical architetcures */ 604/* giving it a reasonably high chance of working on typical architectures */
412static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 605static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
413#endif 606#endif
414 607
415#if EV_USE_MONOTONIC 608#if EV_USE_MONOTONIC
416static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 609static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417#endif 610#endif
418 611
612#ifndef EV_FD_TO_WIN32_HANDLE
613# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
614#endif
615#ifndef EV_WIN32_HANDLE_TO_FD
616# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
617#endif
618#ifndef EV_WIN32_CLOSE_FD
619# define EV_WIN32_CLOSE_FD(fd) close (fd)
620#endif
621
419#ifdef _WIN32 622#ifdef _WIN32
420# include "ev_win32.c" 623# include "ev_win32.c"
421#endif 624#endif
422 625
423/*****************************************************************************/ 626/*****************************************************************************/
424 627
628/* define a suitable floor function (only used by periodics atm) */
629
630#if EV_USE_FLOOR
631# include <math.h>
632# define ev_floor(v) floor (v)
633#else
634
635#include <float.h>
636
637/* a floor() replacement function, should be independent of ev_tstamp type */
638static ev_tstamp noinline
639ev_floor (ev_tstamp v)
640{
641 /* the choice of shift factor is not terribly important */
642#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
643 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
644#else
645 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
646#endif
647
648 /* argument too large for an unsigned long? */
649 if (expect_false (v >= shift))
650 {
651 ev_tstamp f;
652
653 if (v == v - 1.)
654 return v; /* very large number */
655
656 f = shift * ev_floor (v * (1. / shift));
657 return f + ev_floor (v - f);
658 }
659
660 /* special treatment for negative args? */
661 if (expect_false (v < 0.))
662 {
663 ev_tstamp f = -ev_floor (-v);
664
665 return f - (f == v ? 0 : 1);
666 }
667
668 /* fits into an unsigned long */
669 return (unsigned long)v;
670}
671
672#endif
673
674/*****************************************************************************/
675
676#ifdef __linux
677# include <sys/utsname.h>
678#endif
679
680static unsigned int noinline ecb_cold
681ev_linux_version (void)
682{
683#ifdef __linux
684 unsigned int v = 0;
685 struct utsname buf;
686 int i;
687 char *p = buf.release;
688
689 if (uname (&buf))
690 return 0;
691
692 for (i = 3+1; --i; )
693 {
694 unsigned int c = 0;
695
696 for (;;)
697 {
698 if (*p >= '0' && *p <= '9')
699 c = c * 10 + *p++ - '0';
700 else
701 {
702 p += *p == '.';
703 break;
704 }
705 }
706
707 v = (v << 8) | c;
708 }
709
710 return v;
711#else
712 return 0;
713#endif
714}
715
716/*****************************************************************************/
717
718#if EV_AVOID_STDIO
719static void noinline ecb_cold
720ev_printerr (const char *msg)
721{
722 write (STDERR_FILENO, msg, strlen (msg));
723}
724#endif
725
425static void (*syserr_cb)(const char *msg); 726static void (*syserr_cb)(const char *msg);
426 727
427void 728void ecb_cold
428ev_set_syserr_cb (void (*cb)(const char *msg)) 729ev_set_syserr_cb (void (*cb)(const char *msg))
429{ 730{
430 syserr_cb = cb; 731 syserr_cb = cb;
431} 732}
432 733
433static void noinline 734static void noinline ecb_cold
434ev_syserr (const char *msg) 735ev_syserr (const char *msg)
435{ 736{
436 if (!msg) 737 if (!msg)
437 msg = "(libev) system error"; 738 msg = "(libev) system error";
438 739
439 if (syserr_cb) 740 if (syserr_cb)
440 syserr_cb (msg); 741 syserr_cb (msg);
441 else 742 else
442 { 743 {
744#if EV_AVOID_STDIO
745 ev_printerr (msg);
746 ev_printerr (": ");
747 ev_printerr (strerror (errno));
748 ev_printerr ("\n");
749#else
443 perror (msg); 750 perror (msg);
751#endif
444 abort (); 752 abort ();
445 } 753 }
446} 754}
447 755
448static void * 756static void *
449ev_realloc_emul (void *ptr, long size) 757ev_realloc_emul (void *ptr, long size)
450{ 758{
759#if __GLIBC__
760 return realloc (ptr, size);
761#else
451 /* some systems, notably openbsd and darwin, fail to properly 762 /* some systems, notably openbsd and darwin, fail to properly
452 * implement realloc (x, 0) (as required by both ansi c-98 and 763 * implement realloc (x, 0) (as required by both ansi c-89 and
453 * the single unix specification, so work around them here. 764 * the single unix specification, so work around them here.
454 */ 765 */
455 766
456 if (size) 767 if (size)
457 return realloc (ptr, size); 768 return realloc (ptr, size);
458 769
459 free (ptr); 770 free (ptr);
460 return 0; 771 return 0;
772#endif
461} 773}
462 774
463static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 775static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
464 776
465void 777void ecb_cold
466ev_set_allocator (void *(*cb)(void *ptr, long size)) 778ev_set_allocator (void *(*cb)(void *ptr, long size))
467{ 779{
468 alloc = cb; 780 alloc = cb;
469} 781}
470 782
… …
473{ 785{
474 ptr = alloc (ptr, size); 786 ptr = alloc (ptr, size);
475 787
476 if (!ptr && size) 788 if (!ptr && size)
477 { 789 {
790#if EV_AVOID_STDIO
791 ev_printerr ("(libev) memory allocation failed, aborting.\n");
792#else
478 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 793 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
794#endif
479 abort (); 795 abort ();
480 } 796 }
481 797
482 return ptr; 798 return ptr;
483} 799}
… …
485#define ev_malloc(size) ev_realloc (0, (size)) 801#define ev_malloc(size) ev_realloc (0, (size))
486#define ev_free(ptr) ev_realloc ((ptr), 0) 802#define ev_free(ptr) ev_realloc ((ptr), 0)
487 803
488/*****************************************************************************/ 804/*****************************************************************************/
489 805
806/* set in reify when reification needed */
807#define EV_ANFD_REIFY 1
808
490/* file descriptor info structure */ 809/* file descriptor info structure */
491typedef struct 810typedef struct
492{ 811{
493 WL head; 812 WL head;
494 unsigned char events; /* the events watched for */ 813 unsigned char events; /* the events watched for */
495 unsigned char reify; /* flag set when this ANFD needs reification */ 814 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
496 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 815 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
497 unsigned char unused; 816 unsigned char unused;
498#if EV_USE_EPOLL 817#if EV_USE_EPOLL
499 unsigned int egen; /* generation counter to counter epoll bugs */ 818 unsigned int egen; /* generation counter to counter epoll bugs */
500#endif 819#endif
501#if EV_SELECT_IS_WINSOCKET 820#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
502 SOCKET handle; 821 SOCKET handle;
822#endif
823#if EV_USE_IOCP
824 OVERLAPPED or, ow;
503#endif 825#endif
504} ANFD; 826} ANFD;
505 827
506/* stores the pending event set for a given watcher */ 828/* stores the pending event set for a given watcher */
507typedef struct 829typedef struct
… …
562 884
563 static int ev_default_loop_ptr; 885 static int ev_default_loop_ptr;
564 886
565#endif 887#endif
566 888
889#if EV_FEATURE_API
890# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
891# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
892# define EV_INVOKE_PENDING invoke_cb (EV_A)
893#else
894# define EV_RELEASE_CB (void)0
895# define EV_ACQUIRE_CB (void)0
896# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
897#endif
898
899#define EVBREAK_RECURSE 0x80
900
567/*****************************************************************************/ 901/*****************************************************************************/
568 902
569#ifndef EV_HAVE_EV_TIME 903#ifndef EV_HAVE_EV_TIME
570ev_tstamp 904ev_tstamp
571ev_time (void) 905ev_time (void)
… …
614 if (delay > 0.) 948 if (delay > 0.)
615 { 949 {
616#if EV_USE_NANOSLEEP 950#if EV_USE_NANOSLEEP
617 struct timespec ts; 951 struct timespec ts;
618 952
619 ts.tv_sec = (time_t)delay; 953 EV_TS_SET (ts, delay);
620 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
621
622 nanosleep (&ts, 0); 954 nanosleep (&ts, 0);
623#elif defined(_WIN32) 955#elif defined(_WIN32)
624 Sleep ((unsigned long)(delay * 1e3)); 956 Sleep ((unsigned long)(delay * 1e3));
625#else 957#else
626 struct timeval tv; 958 struct timeval tv;
627 959
628 tv.tv_sec = (time_t)delay;
629 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
630
631 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 960 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
632 /* somehting not guaranteed by newer posix versions, but guaranteed */ 961 /* something not guaranteed by newer posix versions, but guaranteed */
633 /* by older ones */ 962 /* by older ones */
963 EV_TV_SET (tv, delay);
634 select (0, 0, 0, 0, &tv); 964 select (0, 0, 0, 0, &tv);
635#endif 965#endif
636 } 966 }
637} 967}
638 968
639/*****************************************************************************/ 969/*****************************************************************************/
640 970
641#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 971#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
642 972
643/* find a suitable new size for the given array, */ 973/* find a suitable new size for the given array, */
644/* hopefully by rounding to a ncie-to-malloc size */ 974/* hopefully by rounding to a nice-to-malloc size */
645inline_size int 975inline_size int
646array_nextsize (int elem, int cur, int cnt) 976array_nextsize (int elem, int cur, int cnt)
647{ 977{
648 int ncur = cur + 1; 978 int ncur = cur + 1;
649 979
… …
661 } 991 }
662 992
663 return ncur; 993 return ncur;
664} 994}
665 995
666static noinline void * 996static void * noinline ecb_cold
667array_realloc (int elem, void *base, int *cur, int cnt) 997array_realloc (int elem, void *base, int *cur, int cnt)
668{ 998{
669 *cur = array_nextsize (elem, *cur, cnt); 999 *cur = array_nextsize (elem, *cur, cnt);
670 return ev_realloc (base, elem * *cur); 1000 return ev_realloc (base, elem * *cur);
671} 1001}
… …
674 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1004 memset ((void *)(base), 0, sizeof (*(base)) * (count))
675 1005
676#define array_needsize(type,base,cur,cnt,init) \ 1006#define array_needsize(type,base,cur,cnt,init) \
677 if (expect_false ((cnt) > (cur))) \ 1007 if (expect_false ((cnt) > (cur))) \
678 { \ 1008 { \
679 int ocur_ = (cur); \ 1009 int ecb_unused ocur_ = (cur); \
680 (base) = (type *)array_realloc \ 1010 (base) = (type *)array_realloc \
681 (sizeof (type), (base), &(cur), (cnt)); \ 1011 (sizeof (type), (base), &(cur), (cnt)); \
682 init ((base) + (ocur_), (cur) - ocur_); \ 1012 init ((base) + (ocur_), (cur) - ocur_); \
683 } 1013 }
684 1014
… …
745} 1075}
746 1076
747/*****************************************************************************/ 1077/*****************************************************************************/
748 1078
749inline_speed void 1079inline_speed void
750fd_event (EV_P_ int fd, int revents) 1080fd_event_nocheck (EV_P_ int fd, int revents)
751{ 1081{
752 ANFD *anfd = anfds + fd; 1082 ANFD *anfd = anfds + fd;
753 ev_io *w; 1083 ev_io *w;
754 1084
755 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1085 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
759 if (ev) 1089 if (ev)
760 ev_feed_event (EV_A_ (W)w, ev); 1090 ev_feed_event (EV_A_ (W)w, ev);
761 } 1091 }
762} 1092}
763 1093
1094/* do not submit kernel events for fds that have reify set */
1095/* because that means they changed while we were polling for new events */
1096inline_speed void
1097fd_event (EV_P_ int fd, int revents)
1098{
1099 ANFD *anfd = anfds + fd;
1100
1101 if (expect_true (!anfd->reify))
1102 fd_event_nocheck (EV_A_ fd, revents);
1103}
1104
764void 1105void
765ev_feed_fd_event (EV_P_ int fd, int revents) 1106ev_feed_fd_event (EV_P_ int fd, int revents)
766{ 1107{
767 if (fd >= 0 && fd < anfdmax) 1108 if (fd >= 0 && fd < anfdmax)
768 fd_event (EV_A_ fd, revents); 1109 fd_event_nocheck (EV_A_ fd, revents);
769} 1110}
770 1111
771/* make sure the external fd watch events are in-sync */ 1112/* make sure the external fd watch events are in-sync */
772/* with the kernel/libev internal state */ 1113/* with the kernel/libev internal state */
773inline_size void 1114inline_size void
774fd_reify (EV_P) 1115fd_reify (EV_P)
775{ 1116{
776 int i; 1117 int i;
777 1118
1119#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1120 for (i = 0; i < fdchangecnt; ++i)
1121 {
1122 int fd = fdchanges [i];
1123 ANFD *anfd = anfds + fd;
1124
1125 if (anfd->reify & EV__IOFDSET && anfd->head)
1126 {
1127 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1128
1129 if (handle != anfd->handle)
1130 {
1131 unsigned long arg;
1132
1133 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1134
1135 /* handle changed, but fd didn't - we need to do it in two steps */
1136 backend_modify (EV_A_ fd, anfd->events, 0);
1137 anfd->events = 0;
1138 anfd->handle = handle;
1139 }
1140 }
1141 }
1142#endif
1143
778 for (i = 0; i < fdchangecnt; ++i) 1144 for (i = 0; i < fdchangecnt; ++i)
779 { 1145 {
780 int fd = fdchanges [i]; 1146 int fd = fdchanges [i];
781 ANFD *anfd = anfds + fd; 1147 ANFD *anfd = anfds + fd;
782 ev_io *w; 1148 ev_io *w;
783 1149
784 unsigned char events = 0; 1150 unsigned char o_events = anfd->events;
1151 unsigned char o_reify = anfd->reify;
785 1152
786 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1153 anfd->reify = 0;
787 events |= (unsigned char)w->events;
788 1154
789#if EV_SELECT_IS_WINSOCKET 1155 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
790 if (events)
791 { 1156 {
792 unsigned long arg; 1157 anfd->events = 0;
793 #ifdef EV_FD_TO_WIN32_HANDLE 1158
794 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1159 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
795 #else 1160 anfd->events |= (unsigned char)w->events;
796 anfd->handle = _get_osfhandle (fd); 1161
797 #endif 1162 if (o_events != anfd->events)
798 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1163 o_reify = EV__IOFDSET; /* actually |= */
799 } 1164 }
800#endif
801 1165
802 { 1166 if (o_reify & EV__IOFDSET)
803 unsigned char o_events = anfd->events;
804 unsigned char o_reify = anfd->reify;
805
806 anfd->reify = 0;
807 anfd->events = events;
808
809 if (o_events != events || o_reify & EV__IOFDSET)
810 backend_modify (EV_A_ fd, o_events, events); 1167 backend_modify (EV_A_ fd, o_events, anfd->events);
811 }
812 } 1168 }
813 1169
814 fdchangecnt = 0; 1170 fdchangecnt = 0;
815} 1171}
816 1172
… …
828 fdchanges [fdchangecnt - 1] = fd; 1184 fdchanges [fdchangecnt - 1] = fd;
829 } 1185 }
830} 1186}
831 1187
832/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1188/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
833inline_speed void 1189inline_speed void ecb_cold
834fd_kill (EV_P_ int fd) 1190fd_kill (EV_P_ int fd)
835{ 1191{
836 ev_io *w; 1192 ev_io *w;
837 1193
838 while ((w = (ev_io *)anfds [fd].head)) 1194 while ((w = (ev_io *)anfds [fd].head))
… …
840 ev_io_stop (EV_A_ w); 1196 ev_io_stop (EV_A_ w);
841 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1197 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
842 } 1198 }
843} 1199}
844 1200
845/* check whether the given fd is atcually valid, for error recovery */ 1201/* check whether the given fd is actually valid, for error recovery */
846inline_size int 1202inline_size int ecb_cold
847fd_valid (int fd) 1203fd_valid (int fd)
848{ 1204{
849#ifdef _WIN32 1205#ifdef _WIN32
850 return _get_osfhandle (fd) != -1; 1206 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
851#else 1207#else
852 return fcntl (fd, F_GETFD) != -1; 1208 return fcntl (fd, F_GETFD) != -1;
853#endif 1209#endif
854} 1210}
855 1211
856/* called on EBADF to verify fds */ 1212/* called on EBADF to verify fds */
857static void noinline 1213static void noinline ecb_cold
858fd_ebadf (EV_P) 1214fd_ebadf (EV_P)
859{ 1215{
860 int fd; 1216 int fd;
861 1217
862 for (fd = 0; fd < anfdmax; ++fd) 1218 for (fd = 0; fd < anfdmax; ++fd)
… …
864 if (!fd_valid (fd) && errno == EBADF) 1220 if (!fd_valid (fd) && errno == EBADF)
865 fd_kill (EV_A_ fd); 1221 fd_kill (EV_A_ fd);
866} 1222}
867 1223
868/* called on ENOMEM in select/poll to kill some fds and retry */ 1224/* called on ENOMEM in select/poll to kill some fds and retry */
869static void noinline 1225static void noinline ecb_cold
870fd_enomem (EV_P) 1226fd_enomem (EV_P)
871{ 1227{
872 int fd; 1228 int fd;
873 1229
874 for (fd = anfdmax; fd--; ) 1230 for (fd = anfdmax; fd--; )
875 if (anfds [fd].events) 1231 if (anfds [fd].events)
876 { 1232 {
877 fd_kill (EV_A_ fd); 1233 fd_kill (EV_A_ fd);
878 return; 1234 break;
879 } 1235 }
880} 1236}
881 1237
882/* usually called after fork if backend needs to re-arm all fds from scratch */ 1238/* usually called after fork if backend needs to re-arm all fds from scratch */
883static void noinline 1239static void noinline
… …
888 for (fd = 0; fd < anfdmax; ++fd) 1244 for (fd = 0; fd < anfdmax; ++fd)
889 if (anfds [fd].events) 1245 if (anfds [fd].events)
890 { 1246 {
891 anfds [fd].events = 0; 1247 anfds [fd].events = 0;
892 anfds [fd].emask = 0; 1248 anfds [fd].emask = 0;
893 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1249 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
894 } 1250 }
895} 1251}
896 1252
1253/* used to prepare libev internal fd's */
1254/* this is not fork-safe */
1255inline_speed void
1256fd_intern (int fd)
1257{
1258#ifdef _WIN32
1259 unsigned long arg = 1;
1260 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1261#else
1262 fcntl (fd, F_SETFD, FD_CLOEXEC);
1263 fcntl (fd, F_SETFL, O_NONBLOCK);
1264#endif
1265}
1266
897/*****************************************************************************/ 1267/*****************************************************************************/
898 1268
899/* 1269/*
900 * the heap functions want a real array index. array index 0 uis guaranteed to not 1270 * the heap functions want a real array index. array index 0 is guaranteed to not
901 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1271 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
902 * the branching factor of the d-tree. 1272 * the branching factor of the d-tree.
903 */ 1273 */
904 1274
905/* 1275/*
… …
973 1343
974 for (;;) 1344 for (;;)
975 { 1345 {
976 int c = k << 1; 1346 int c = k << 1;
977 1347
978 if (c > N + HEAP0 - 1) 1348 if (c >= N + HEAP0)
979 break; 1349 break;
980 1350
981 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1351 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
982 ? 1 : 0; 1352 ? 1 : 0;
983 1353
… …
1019 1389
1020/* move an element suitably so it is in a correct place */ 1390/* move an element suitably so it is in a correct place */
1021inline_size void 1391inline_size void
1022adjustheap (ANHE *heap, int N, int k) 1392adjustheap (ANHE *heap, int N, int k)
1023{ 1393{
1024 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1394 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1025 upheap (heap, k); 1395 upheap (heap, k);
1026 else 1396 else
1027 downheap (heap, N, k); 1397 downheap (heap, N, k);
1028} 1398}
1029 1399
… …
1042/*****************************************************************************/ 1412/*****************************************************************************/
1043 1413
1044/* associate signal watchers to a signal signal */ 1414/* associate signal watchers to a signal signal */
1045typedef struct 1415typedef struct
1046{ 1416{
1417 EV_ATOMIC_T pending;
1418#if EV_MULTIPLICITY
1419 EV_P;
1420#endif
1047 WL head; 1421 WL head;
1048 EV_ATOMIC_T gotsig;
1049} ANSIG; 1422} ANSIG;
1050 1423
1051static ANSIG *signals; 1424static ANSIG signals [EV_NSIG - 1];
1052static int signalmax;
1053
1054static EV_ATOMIC_T gotsig;
1055 1425
1056/*****************************************************************************/ 1426/*****************************************************************************/
1057 1427
1058/* used to prepare libev internal fd's */ 1428#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1059/* this is not fork-safe */
1060inline_speed void
1061fd_intern (int fd)
1062{
1063#ifdef _WIN32
1064 unsigned long arg = 1;
1065 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1066#else
1067 fcntl (fd, F_SETFD, FD_CLOEXEC);
1068 fcntl (fd, F_SETFL, O_NONBLOCK);
1069#endif
1070}
1071 1429
1072static void noinline 1430static void noinline ecb_cold
1073evpipe_init (EV_P) 1431evpipe_init (EV_P)
1074{ 1432{
1075 if (!ev_is_active (&pipe_w)) 1433 if (!ev_is_active (&pipe_w))
1076 { 1434 {
1077#if EV_USE_EVENTFD 1435# if EV_USE_EVENTFD
1436 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1437 if (evfd < 0 && errno == EINVAL)
1078 if ((evfd = eventfd (0, 0)) >= 0) 1438 evfd = eventfd (0, 0);
1439
1440 if (evfd >= 0)
1079 { 1441 {
1080 evpipe [0] = -1; 1442 evpipe [0] = -1;
1081 fd_intern (evfd); 1443 fd_intern (evfd); /* doing it twice doesn't hurt */
1082 ev_io_set (&pipe_w, evfd, EV_READ); 1444 ev_io_set (&pipe_w, evfd, EV_READ);
1083 } 1445 }
1084 else 1446 else
1085#endif 1447# endif
1086 { 1448 {
1087 while (pipe (evpipe)) 1449 while (pipe (evpipe))
1088 ev_syserr ("(libev) error creating signal/async pipe"); 1450 ev_syserr ("(libev) error creating signal/async pipe");
1089 1451
1090 fd_intern (evpipe [0]); 1452 fd_intern (evpipe [0]);
… …
1095 ev_io_start (EV_A_ &pipe_w); 1457 ev_io_start (EV_A_ &pipe_w);
1096 ev_unref (EV_A); /* watcher should not keep loop alive */ 1458 ev_unref (EV_A); /* watcher should not keep loop alive */
1097 } 1459 }
1098} 1460}
1099 1461
1100inline_size void 1462inline_speed void
1101evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1463evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1102{ 1464{
1103 if (!*flag) 1465 if (expect_true (*flag))
1466 return;
1467
1468 *flag = 1;
1469
1470 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1471
1472 pipe_write_skipped = 1;
1473
1474 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1475
1476 if (pipe_write_wanted)
1104 { 1477 {
1478 int old_errno;
1479
1480 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1481
1105 int old_errno = errno; /* save errno because write might clobber it */ 1482 old_errno = errno; /* save errno because write will clobber it */
1106
1107 *flag = 1;
1108 1483
1109#if EV_USE_EVENTFD 1484#if EV_USE_EVENTFD
1110 if (evfd >= 0) 1485 if (evfd >= 0)
1111 { 1486 {
1112 uint64_t counter = 1; 1487 uint64_t counter = 1;
1113 write (evfd, &counter, sizeof (uint64_t)); 1488 write (evfd, &counter, sizeof (uint64_t));
1114 } 1489 }
1115 else 1490 else
1116#endif 1491#endif
1492 {
1493 /* win32 people keep sending patches that change this write() to send() */
1494 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1495 /* so when you think this write should be a send instead, please find out */
1496 /* where your send() is from - it's definitely not the microsoft send, and */
1497 /* tell me. thank you. */
1117 write (evpipe [1], &old_errno, 1); 1498 write (evpipe [1], &(evpipe [1]), 1);
1499 }
1118 1500
1119 errno = old_errno; 1501 errno = old_errno;
1120 } 1502 }
1121} 1503}
1122 1504
1123/* called whenever the libev signal pipe */ 1505/* called whenever the libev signal pipe */
1124/* got some events (signal, async) */ 1506/* got some events (signal, async) */
1125static void 1507static void
1126pipecb (EV_P_ ev_io *iow, int revents) 1508pipecb (EV_P_ ev_io *iow, int revents)
1127{ 1509{
1510 int i;
1511
1512 if (revents & EV_READ)
1513 {
1128#if EV_USE_EVENTFD 1514#if EV_USE_EVENTFD
1129 if (evfd >= 0) 1515 if (evfd >= 0)
1130 { 1516 {
1131 uint64_t counter; 1517 uint64_t counter;
1132 read (evfd, &counter, sizeof (uint64_t)); 1518 read (evfd, &counter, sizeof (uint64_t));
1133 } 1519 }
1134 else 1520 else
1135#endif 1521#endif
1136 { 1522 {
1137 char dummy; 1523 char dummy;
1524 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1138 read (evpipe [0], &dummy, 1); 1525 read (evpipe [0], &dummy, 1);
1526 }
1527 }
1528
1529 pipe_write_skipped = 0;
1530
1531#if EV_SIGNAL_ENABLE
1532 if (sig_pending)
1139 } 1533 {
1534 sig_pending = 0;
1140 1535
1141 if (gotsig && ev_is_default_loop (EV_A)) 1536 for (i = EV_NSIG - 1; i--; )
1142 { 1537 if (expect_false (signals [i].pending))
1143 int signum;
1144 gotsig = 0;
1145
1146 for (signum = signalmax; signum--; )
1147 if (signals [signum].gotsig)
1148 ev_feed_signal_event (EV_A_ signum + 1); 1538 ev_feed_signal_event (EV_A_ i + 1);
1149 } 1539 }
1540#endif
1150 1541
1151#if EV_ASYNC_ENABLE 1542#if EV_ASYNC_ENABLE
1152 if (gotasync) 1543 if (async_pending)
1153 { 1544 {
1154 int i; 1545 async_pending = 0;
1155 gotasync = 0;
1156 1546
1157 for (i = asynccnt; i--; ) 1547 for (i = asynccnt; i--; )
1158 if (asyncs [i]->sent) 1548 if (asyncs [i]->sent)
1159 { 1549 {
1160 asyncs [i]->sent = 0; 1550 asyncs [i]->sent = 0;
… …
1164#endif 1554#endif
1165} 1555}
1166 1556
1167/*****************************************************************************/ 1557/*****************************************************************************/
1168 1558
1559void
1560ev_feed_signal (int signum)
1561{
1562#if EV_MULTIPLICITY
1563 EV_P = signals [signum - 1].loop;
1564
1565 if (!EV_A)
1566 return;
1567#endif
1568
1569 if (!ev_active (&pipe_w))
1570 return;
1571
1572 signals [signum - 1].pending = 1;
1573 evpipe_write (EV_A_ &sig_pending);
1574}
1575
1169static void 1576static void
1170ev_sighandler (int signum) 1577ev_sighandler (int signum)
1171{ 1578{
1172#if EV_MULTIPLICITY
1173 struct ev_loop *loop = &default_loop_struct;
1174#endif
1175
1176#if _WIN32 1579#ifdef _WIN32
1177 signal (signum, ev_sighandler); 1580 signal (signum, ev_sighandler);
1178#endif 1581#endif
1179 1582
1180 signals [signum - 1].gotsig = 1; 1583 ev_feed_signal (signum);
1181 evpipe_write (EV_A_ &gotsig);
1182} 1584}
1183 1585
1184void noinline 1586void noinline
1185ev_feed_signal_event (EV_P_ int signum) 1587ev_feed_signal_event (EV_P_ int signum)
1186{ 1588{
1187 WL w; 1589 WL w;
1188 1590
1591 if (expect_false (signum <= 0 || signum > EV_NSIG))
1592 return;
1593
1594 --signum;
1595
1189#if EV_MULTIPLICITY 1596#if EV_MULTIPLICITY
1190 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1597 /* it is permissible to try to feed a signal to the wrong loop */
1191#endif 1598 /* or, likely more useful, feeding a signal nobody is waiting for */
1192 1599
1193 --signum; 1600 if (expect_false (signals [signum].loop != EV_A))
1194
1195 if (signum < 0 || signum >= signalmax)
1196 return; 1601 return;
1602#endif
1197 1603
1198 signals [signum].gotsig = 0; 1604 signals [signum].pending = 0;
1199 1605
1200 for (w = signals [signum].head; w; w = w->next) 1606 for (w = signals [signum].head; w; w = w->next)
1201 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1607 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1202} 1608}
1203 1609
1610#if EV_USE_SIGNALFD
1611static void
1612sigfdcb (EV_P_ ev_io *iow, int revents)
1613{
1614 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1615
1616 for (;;)
1617 {
1618 ssize_t res = read (sigfd, si, sizeof (si));
1619
1620 /* not ISO-C, as res might be -1, but works with SuS */
1621 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1622 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1623
1624 if (res < (ssize_t)sizeof (si))
1625 break;
1626 }
1627}
1628#endif
1629
1630#endif
1631
1204/*****************************************************************************/ 1632/*****************************************************************************/
1205 1633
1634#if EV_CHILD_ENABLE
1206static WL childs [EV_PID_HASHSIZE]; 1635static WL childs [EV_PID_HASHSIZE];
1207
1208#ifndef _WIN32
1209 1636
1210static ev_signal childev; 1637static ev_signal childev;
1211 1638
1212#ifndef WIFCONTINUED 1639#ifndef WIFCONTINUED
1213# define WIFCONTINUED(status) 0 1640# define WIFCONTINUED(status) 0
… …
1218child_reap (EV_P_ int chain, int pid, int status) 1645child_reap (EV_P_ int chain, int pid, int status)
1219{ 1646{
1220 ev_child *w; 1647 ev_child *w;
1221 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1648 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1222 1649
1223 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1650 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1224 { 1651 {
1225 if ((w->pid == pid || !w->pid) 1652 if ((w->pid == pid || !w->pid)
1226 && (!traced || (w->flags & 1))) 1653 && (!traced || (w->flags & 1)))
1227 { 1654 {
1228 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1655 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1253 /* make sure we are called again until all children have been reaped */ 1680 /* make sure we are called again until all children have been reaped */
1254 /* we need to do it this way so that the callback gets called before we continue */ 1681 /* we need to do it this way so that the callback gets called before we continue */
1255 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1682 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1256 1683
1257 child_reap (EV_A_ pid, pid, status); 1684 child_reap (EV_A_ pid, pid, status);
1258 if (EV_PID_HASHSIZE > 1) 1685 if ((EV_PID_HASHSIZE) > 1)
1259 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1686 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1260} 1687}
1261 1688
1262#endif 1689#endif
1263 1690
1264/*****************************************************************************/ 1691/*****************************************************************************/
1265 1692
1693#if EV_USE_IOCP
1694# include "ev_iocp.c"
1695#endif
1266#if EV_USE_PORT 1696#if EV_USE_PORT
1267# include "ev_port.c" 1697# include "ev_port.c"
1268#endif 1698#endif
1269#if EV_USE_KQUEUE 1699#if EV_USE_KQUEUE
1270# include "ev_kqueue.c" 1700# include "ev_kqueue.c"
… …
1277#endif 1707#endif
1278#if EV_USE_SELECT 1708#if EV_USE_SELECT
1279# include "ev_select.c" 1709# include "ev_select.c"
1280#endif 1710#endif
1281 1711
1282int 1712int ecb_cold
1283ev_version_major (void) 1713ev_version_major (void)
1284{ 1714{
1285 return EV_VERSION_MAJOR; 1715 return EV_VERSION_MAJOR;
1286} 1716}
1287 1717
1288int 1718int ecb_cold
1289ev_version_minor (void) 1719ev_version_minor (void)
1290{ 1720{
1291 return EV_VERSION_MINOR; 1721 return EV_VERSION_MINOR;
1292} 1722}
1293 1723
1294/* return true if we are running with elevated privileges and should ignore env variables */ 1724/* return true if we are running with elevated privileges and should ignore env variables */
1295int inline_size 1725int inline_size ecb_cold
1296enable_secure (void) 1726enable_secure (void)
1297{ 1727{
1298#ifdef _WIN32 1728#ifdef _WIN32
1299 return 0; 1729 return 0;
1300#else 1730#else
1301 return getuid () != geteuid () 1731 return getuid () != geteuid ()
1302 || getgid () != getegid (); 1732 || getgid () != getegid ();
1303#endif 1733#endif
1304} 1734}
1305 1735
1306unsigned int 1736unsigned int ecb_cold
1307ev_supported_backends (void) 1737ev_supported_backends (void)
1308{ 1738{
1309 unsigned int flags = 0; 1739 unsigned int flags = 0;
1310 1740
1311 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1741 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1315 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1745 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1316 1746
1317 return flags; 1747 return flags;
1318} 1748}
1319 1749
1320unsigned int 1750unsigned int ecb_cold
1321ev_recommended_backends (void) 1751ev_recommended_backends (void)
1322{ 1752{
1323 unsigned int flags = ev_supported_backends (); 1753 unsigned int flags = ev_supported_backends ();
1324 1754
1325#ifndef __NetBSD__ 1755#ifndef __NetBSD__
… …
1330#ifdef __APPLE__ 1760#ifdef __APPLE__
1331 /* only select works correctly on that "unix-certified" platform */ 1761 /* only select works correctly on that "unix-certified" platform */
1332 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1762 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1333 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1763 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1334#endif 1764#endif
1765#ifdef __FreeBSD__
1766 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1767#endif
1335 1768
1336 return flags; 1769 return flags;
1337} 1770}
1338 1771
1339unsigned int 1772unsigned int ecb_cold
1340ev_embeddable_backends (void) 1773ev_embeddable_backends (void)
1341{ 1774{
1342 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1775 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1343 1776
1344 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1777 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1345 /* please fix it and tell me how to detect the fix */ 1778 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1346 flags &= ~EVBACKEND_EPOLL; 1779 flags &= ~EVBACKEND_EPOLL;
1347 1780
1348 return flags; 1781 return flags;
1349} 1782}
1350 1783
1351unsigned int 1784unsigned int
1352ev_backend (EV_P) 1785ev_backend (EV_P)
1353{ 1786{
1354 return backend; 1787 return backend;
1355} 1788}
1356 1789
1790#if EV_FEATURE_API
1357unsigned int 1791unsigned int
1358ev_loop_count (EV_P) 1792ev_iteration (EV_P)
1359{ 1793{
1360 return loop_count; 1794 return loop_count;
1795}
1796
1797unsigned int
1798ev_depth (EV_P)
1799{
1800 return loop_depth;
1361} 1801}
1362 1802
1363void 1803void
1364ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1804ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1365{ 1805{
… …
1370ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1810ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1371{ 1811{
1372 timeout_blocktime = interval; 1812 timeout_blocktime = interval;
1373} 1813}
1374 1814
1815void
1816ev_set_userdata (EV_P_ void *data)
1817{
1818 userdata = data;
1819}
1820
1821void *
1822ev_userdata (EV_P)
1823{
1824 return userdata;
1825}
1826
1827void
1828ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1829{
1830 invoke_cb = invoke_pending_cb;
1831}
1832
1833void
1834ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1835{
1836 release_cb = release;
1837 acquire_cb = acquire;
1838}
1839#endif
1840
1375/* initialise a loop structure, must be zero-initialised */ 1841/* initialise a loop structure, must be zero-initialised */
1376static void noinline 1842static void noinline ecb_cold
1377loop_init (EV_P_ unsigned int flags) 1843loop_init (EV_P_ unsigned int flags)
1378{ 1844{
1379 if (!backend) 1845 if (!backend)
1380 { 1846 {
1847 origflags = flags;
1848
1381#if EV_USE_REALTIME 1849#if EV_USE_REALTIME
1382 if (!have_realtime) 1850 if (!have_realtime)
1383 { 1851 {
1384 struct timespec ts; 1852 struct timespec ts;
1385 1853
… …
1396 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1864 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1397 have_monotonic = 1; 1865 have_monotonic = 1;
1398 } 1866 }
1399#endif 1867#endif
1400 1868
1401 ev_rt_now = ev_time ();
1402 mn_now = get_clock ();
1403 now_floor = mn_now;
1404 rtmn_diff = ev_rt_now - mn_now;
1405
1406 io_blocktime = 0.;
1407 timeout_blocktime = 0.;
1408 backend = 0;
1409 backend_fd = -1;
1410 gotasync = 0;
1411#if EV_USE_INOTIFY
1412 fs_fd = -2;
1413#endif
1414
1415 /* pid check not overridable via env */ 1869 /* pid check not overridable via env */
1416#ifndef _WIN32 1870#ifndef _WIN32
1417 if (flags & EVFLAG_FORKCHECK) 1871 if (flags & EVFLAG_FORKCHECK)
1418 curpid = getpid (); 1872 curpid = getpid ();
1419#endif 1873#endif
… …
1421 if (!(flags & EVFLAG_NOENV) 1875 if (!(flags & EVFLAG_NOENV)
1422 && !enable_secure () 1876 && !enable_secure ()
1423 && getenv ("LIBEV_FLAGS")) 1877 && getenv ("LIBEV_FLAGS"))
1424 flags = atoi (getenv ("LIBEV_FLAGS")); 1878 flags = atoi (getenv ("LIBEV_FLAGS"));
1425 1879
1426 if (!(flags & 0x0000ffffU)) 1880 ev_rt_now = ev_time ();
1881 mn_now = get_clock ();
1882 now_floor = mn_now;
1883 rtmn_diff = ev_rt_now - mn_now;
1884#if EV_FEATURE_API
1885 invoke_cb = ev_invoke_pending;
1886#endif
1887
1888 io_blocktime = 0.;
1889 timeout_blocktime = 0.;
1890 backend = 0;
1891 backend_fd = -1;
1892 sig_pending = 0;
1893#if EV_ASYNC_ENABLE
1894 async_pending = 0;
1895#endif
1896 pipe_write_skipped = 0;
1897 pipe_write_wanted = 0;
1898#if EV_USE_INOTIFY
1899 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1900#endif
1901#if EV_USE_SIGNALFD
1902 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1903#endif
1904
1905 if (!(flags & EVBACKEND_MASK))
1427 flags |= ev_recommended_backends (); 1906 flags |= ev_recommended_backends ();
1428 1907
1908#if EV_USE_IOCP
1909 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1910#endif
1429#if EV_USE_PORT 1911#if EV_USE_PORT
1430 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1912 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1431#endif 1913#endif
1432#if EV_USE_KQUEUE 1914#if EV_USE_KQUEUE
1433 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1915 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1442 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1924 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1443#endif 1925#endif
1444 1926
1445 ev_prepare_init (&pending_w, pendingcb); 1927 ev_prepare_init (&pending_w, pendingcb);
1446 1928
1929#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1447 ev_init (&pipe_w, pipecb); 1930 ev_init (&pipe_w, pipecb);
1448 ev_set_priority (&pipe_w, EV_MAXPRI); 1931 ev_set_priority (&pipe_w, EV_MAXPRI);
1932#endif
1449 } 1933 }
1450} 1934}
1451 1935
1452/* free up a loop structure */ 1936/* free up a loop structure */
1453static void noinline 1937void ecb_cold
1454loop_destroy (EV_P) 1938ev_loop_destroy (EV_P)
1455{ 1939{
1456 int i; 1940 int i;
1457 1941
1942#if EV_MULTIPLICITY
1943 /* mimic free (0) */
1944 if (!EV_A)
1945 return;
1946#endif
1947
1948#if EV_CLEANUP_ENABLE
1949 /* queue cleanup watchers (and execute them) */
1950 if (expect_false (cleanupcnt))
1951 {
1952 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1953 EV_INVOKE_PENDING;
1954 }
1955#endif
1956
1957#if EV_CHILD_ENABLE
1958 if (ev_is_active (&childev))
1959 {
1960 ev_ref (EV_A); /* child watcher */
1961 ev_signal_stop (EV_A_ &childev);
1962 }
1963#endif
1964
1458 if (ev_is_active (&pipe_w)) 1965 if (ev_is_active (&pipe_w))
1459 { 1966 {
1460 ev_ref (EV_A); /* signal watcher */ 1967 /*ev_ref (EV_A);*/
1461 ev_io_stop (EV_A_ &pipe_w); 1968 /*ev_io_stop (EV_A_ &pipe_w);*/
1462 1969
1463#if EV_USE_EVENTFD 1970#if EV_USE_EVENTFD
1464 if (evfd >= 0) 1971 if (evfd >= 0)
1465 close (evfd); 1972 close (evfd);
1466#endif 1973#endif
1467 1974
1468 if (evpipe [0] >= 0) 1975 if (evpipe [0] >= 0)
1469 { 1976 {
1470 close (evpipe [0]); 1977 EV_WIN32_CLOSE_FD (evpipe [0]);
1471 close (evpipe [1]); 1978 EV_WIN32_CLOSE_FD (evpipe [1]);
1472 } 1979 }
1473 } 1980 }
1981
1982#if EV_USE_SIGNALFD
1983 if (ev_is_active (&sigfd_w))
1984 close (sigfd);
1985#endif
1474 1986
1475#if EV_USE_INOTIFY 1987#if EV_USE_INOTIFY
1476 if (fs_fd >= 0) 1988 if (fs_fd >= 0)
1477 close (fs_fd); 1989 close (fs_fd);
1478#endif 1990#endif
1479 1991
1480 if (backend_fd >= 0) 1992 if (backend_fd >= 0)
1481 close (backend_fd); 1993 close (backend_fd);
1482 1994
1995#if EV_USE_IOCP
1996 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1997#endif
1483#if EV_USE_PORT 1998#if EV_USE_PORT
1484 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1999 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1485#endif 2000#endif
1486#if EV_USE_KQUEUE 2001#if EV_USE_KQUEUE
1487 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2002 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1502#if EV_IDLE_ENABLE 2017#if EV_IDLE_ENABLE
1503 array_free (idle, [i]); 2018 array_free (idle, [i]);
1504#endif 2019#endif
1505 } 2020 }
1506 2021
1507 ev_free (anfds); anfdmax = 0; 2022 ev_free (anfds); anfds = 0; anfdmax = 0;
1508 2023
1509 /* have to use the microsoft-never-gets-it-right macro */ 2024 /* have to use the microsoft-never-gets-it-right macro */
1510 array_free (rfeed, EMPTY); 2025 array_free (rfeed, EMPTY);
1511 array_free (fdchange, EMPTY); 2026 array_free (fdchange, EMPTY);
1512 array_free (timer, EMPTY); 2027 array_free (timer, EMPTY);
… …
1514 array_free (periodic, EMPTY); 2029 array_free (periodic, EMPTY);
1515#endif 2030#endif
1516#if EV_FORK_ENABLE 2031#if EV_FORK_ENABLE
1517 array_free (fork, EMPTY); 2032 array_free (fork, EMPTY);
1518#endif 2033#endif
2034#if EV_CLEANUP_ENABLE
2035 array_free (cleanup, EMPTY);
2036#endif
1519 array_free (prepare, EMPTY); 2037 array_free (prepare, EMPTY);
1520 array_free (check, EMPTY); 2038 array_free (check, EMPTY);
1521#if EV_ASYNC_ENABLE 2039#if EV_ASYNC_ENABLE
1522 array_free (async, EMPTY); 2040 array_free (async, EMPTY);
1523#endif 2041#endif
1524 2042
1525 backend = 0; 2043 backend = 0;
2044
2045#if EV_MULTIPLICITY
2046 if (ev_is_default_loop (EV_A))
2047#endif
2048 ev_default_loop_ptr = 0;
2049#if EV_MULTIPLICITY
2050 else
2051 ev_free (EV_A);
2052#endif
1526} 2053}
1527 2054
1528#if EV_USE_INOTIFY 2055#if EV_USE_INOTIFY
1529inline_size void infy_fork (EV_P); 2056inline_size void infy_fork (EV_P);
1530#endif 2057#endif
… …
1545 infy_fork (EV_A); 2072 infy_fork (EV_A);
1546#endif 2073#endif
1547 2074
1548 if (ev_is_active (&pipe_w)) 2075 if (ev_is_active (&pipe_w))
1549 { 2076 {
1550 /* this "locks" the handlers against writing to the pipe */ 2077 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1551 /* while we modify the fd vars */
1552 gotsig = 1;
1553#if EV_ASYNC_ENABLE
1554 gotasync = 1;
1555#endif
1556 2078
1557 ev_ref (EV_A); 2079 ev_ref (EV_A);
1558 ev_io_stop (EV_A_ &pipe_w); 2080 ev_io_stop (EV_A_ &pipe_w);
1559 2081
1560#if EV_USE_EVENTFD 2082#if EV_USE_EVENTFD
… …
1562 close (evfd); 2084 close (evfd);
1563#endif 2085#endif
1564 2086
1565 if (evpipe [0] >= 0) 2087 if (evpipe [0] >= 0)
1566 { 2088 {
1567 close (evpipe [0]); 2089 EV_WIN32_CLOSE_FD (evpipe [0]);
1568 close (evpipe [1]); 2090 EV_WIN32_CLOSE_FD (evpipe [1]);
1569 } 2091 }
1570 2092
2093#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1571 evpipe_init (EV_A); 2094 evpipe_init (EV_A);
1572 /* now iterate over everything, in case we missed something */ 2095 /* now iterate over everything, in case we missed something */
1573 pipecb (EV_A_ &pipe_w, EV_READ); 2096 pipecb (EV_A_ &pipe_w, EV_READ);
2097#endif
1574 } 2098 }
1575 2099
1576 postfork = 0; 2100 postfork = 0;
1577} 2101}
1578 2102
1579#if EV_MULTIPLICITY 2103#if EV_MULTIPLICITY
1580 2104
1581struct ev_loop * 2105struct ev_loop * ecb_cold
1582ev_loop_new (unsigned int flags) 2106ev_loop_new (unsigned int flags)
1583{ 2107{
1584 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2108 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1585 2109
1586 memset (loop, 0, sizeof (struct ev_loop)); 2110 memset (EV_A, 0, sizeof (struct ev_loop));
1587
1588 loop_init (EV_A_ flags); 2111 loop_init (EV_A_ flags);
1589 2112
1590 if (ev_backend (EV_A)) 2113 if (ev_backend (EV_A))
1591 return loop; 2114 return EV_A;
1592 2115
2116 ev_free (EV_A);
1593 return 0; 2117 return 0;
1594} 2118}
1595 2119
1596void 2120#endif /* multiplicity */
1597ev_loop_destroy (EV_P)
1598{
1599 loop_destroy (EV_A);
1600 ev_free (loop);
1601}
1602
1603void
1604ev_loop_fork (EV_P)
1605{
1606 postfork = 1; /* must be in line with ev_default_fork */
1607}
1608 2121
1609#if EV_VERIFY 2122#if EV_VERIFY
1610static void noinline 2123static void noinline ecb_cold
1611verify_watcher (EV_P_ W w) 2124verify_watcher (EV_P_ W w)
1612{ 2125{
1613 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2126 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1614 2127
1615 if (w->pending) 2128 if (w->pending)
1616 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2129 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1617} 2130}
1618 2131
1619static void noinline 2132static void noinline ecb_cold
1620verify_heap (EV_P_ ANHE *heap, int N) 2133verify_heap (EV_P_ ANHE *heap, int N)
1621{ 2134{
1622 int i; 2135 int i;
1623 2136
1624 for (i = HEAP0; i < N + HEAP0; ++i) 2137 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1629 2142
1630 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2143 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1631 } 2144 }
1632} 2145}
1633 2146
1634static void noinline 2147static void noinline ecb_cold
1635array_verify (EV_P_ W *ws, int cnt) 2148array_verify (EV_P_ W *ws, int cnt)
1636{ 2149{
1637 while (cnt--) 2150 while (cnt--)
1638 { 2151 {
1639 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2152 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1640 verify_watcher (EV_A_ ws [cnt]); 2153 verify_watcher (EV_A_ ws [cnt]);
1641 } 2154 }
1642} 2155}
1643#endif 2156#endif
1644 2157
1645void 2158#if EV_FEATURE_API
2159void ecb_cold
1646ev_loop_verify (EV_P) 2160ev_verify (EV_P)
1647{ 2161{
1648#if EV_VERIFY 2162#if EV_VERIFY
1649 int i; 2163 int i;
1650 WL w; 2164 WL w;
1651 2165
… …
1685#if EV_FORK_ENABLE 2199#if EV_FORK_ENABLE
1686 assert (forkmax >= forkcnt); 2200 assert (forkmax >= forkcnt);
1687 array_verify (EV_A_ (W *)forks, forkcnt); 2201 array_verify (EV_A_ (W *)forks, forkcnt);
1688#endif 2202#endif
1689 2203
2204#if EV_CLEANUP_ENABLE
2205 assert (cleanupmax >= cleanupcnt);
2206 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2207#endif
2208
1690#if EV_ASYNC_ENABLE 2209#if EV_ASYNC_ENABLE
1691 assert (asyncmax >= asynccnt); 2210 assert (asyncmax >= asynccnt);
1692 array_verify (EV_A_ (W *)asyncs, asynccnt); 2211 array_verify (EV_A_ (W *)asyncs, asynccnt);
1693#endif 2212#endif
1694 2213
2214#if EV_PREPARE_ENABLE
1695 assert (preparemax >= preparecnt); 2215 assert (preparemax >= preparecnt);
1696 array_verify (EV_A_ (W *)prepares, preparecnt); 2216 array_verify (EV_A_ (W *)prepares, preparecnt);
2217#endif
1697 2218
2219#if EV_CHECK_ENABLE
1698 assert (checkmax >= checkcnt); 2220 assert (checkmax >= checkcnt);
1699 array_verify (EV_A_ (W *)checks, checkcnt); 2221 array_verify (EV_A_ (W *)checks, checkcnt);
2222#endif
1700 2223
1701# if 0 2224# if 0
2225#if EV_CHILD_ENABLE
1702 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2226 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1703 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2227 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2228#endif
1704# endif 2229# endif
1705#endif 2230#endif
1706} 2231}
1707 2232#endif
1708#endif /* multiplicity */
1709 2233
1710#if EV_MULTIPLICITY 2234#if EV_MULTIPLICITY
1711struct ev_loop * 2235struct ev_loop * ecb_cold
1712ev_default_loop_init (unsigned int flags)
1713#else 2236#else
1714int 2237int
2238#endif
1715ev_default_loop (unsigned int flags) 2239ev_default_loop (unsigned int flags)
1716#endif
1717{ 2240{
1718 if (!ev_default_loop_ptr) 2241 if (!ev_default_loop_ptr)
1719 { 2242 {
1720#if EV_MULTIPLICITY 2243#if EV_MULTIPLICITY
1721 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2244 EV_P = ev_default_loop_ptr = &default_loop_struct;
1722#else 2245#else
1723 ev_default_loop_ptr = 1; 2246 ev_default_loop_ptr = 1;
1724#endif 2247#endif
1725 2248
1726 loop_init (EV_A_ flags); 2249 loop_init (EV_A_ flags);
1727 2250
1728 if (ev_backend (EV_A)) 2251 if (ev_backend (EV_A))
1729 { 2252 {
1730#ifndef _WIN32 2253#if EV_CHILD_ENABLE
1731 ev_signal_init (&childev, childcb, SIGCHLD); 2254 ev_signal_init (&childev, childcb, SIGCHLD);
1732 ev_set_priority (&childev, EV_MAXPRI); 2255 ev_set_priority (&childev, EV_MAXPRI);
1733 ev_signal_start (EV_A_ &childev); 2256 ev_signal_start (EV_A_ &childev);
1734 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2257 ev_unref (EV_A); /* child watcher should not keep loop alive */
1735#endif 2258#endif
… …
1740 2263
1741 return ev_default_loop_ptr; 2264 return ev_default_loop_ptr;
1742} 2265}
1743 2266
1744void 2267void
1745ev_default_destroy (void) 2268ev_loop_fork (EV_P)
1746{ 2269{
1747#if EV_MULTIPLICITY
1748 struct ev_loop *loop = ev_default_loop_ptr;
1749#endif
1750
1751 ev_default_loop_ptr = 0;
1752
1753#ifndef _WIN32
1754 ev_ref (EV_A); /* child watcher */
1755 ev_signal_stop (EV_A_ &childev);
1756#endif
1757
1758 loop_destroy (EV_A);
1759}
1760
1761void
1762ev_default_fork (void)
1763{
1764#if EV_MULTIPLICITY
1765 struct ev_loop *loop = ev_default_loop_ptr;
1766#endif
1767
1768 postfork = 1; /* must be in line with ev_loop_fork */ 2270 postfork = 1; /* must be in line with ev_default_fork */
1769} 2271}
1770 2272
1771/*****************************************************************************/ 2273/*****************************************************************************/
1772 2274
1773void 2275void
1774ev_invoke (EV_P_ void *w, int revents) 2276ev_invoke (EV_P_ void *w, int revents)
1775{ 2277{
1776 EV_CB_INVOKE ((W)w, revents); 2278 EV_CB_INVOKE ((W)w, revents);
1777} 2279}
1778 2280
1779inline_speed void 2281unsigned int
1780call_pending (EV_P) 2282ev_pending_count (EV_P)
2283{
2284 int pri;
2285 unsigned int count = 0;
2286
2287 for (pri = NUMPRI; pri--; )
2288 count += pendingcnt [pri];
2289
2290 return count;
2291}
2292
2293void noinline
2294ev_invoke_pending (EV_P)
1781{ 2295{
1782 int pri; 2296 int pri;
1783 2297
1784 for (pri = NUMPRI; pri--; ) 2298 for (pri = NUMPRI; pri--; )
1785 while (pendingcnt [pri]) 2299 while (pendingcnt [pri])
1786 { 2300 {
1787 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2301 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1788
1789 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1790 /* ^ this is no longer true, as pending_w could be here */
1791 2302
1792 p->w->pending = 0; 2303 p->w->pending = 0;
1793 EV_CB_INVOKE (p->w, p->events); 2304 EV_CB_INVOKE (p->w, p->events);
1794 EV_FREQUENT_CHECK; 2305 EV_FREQUENT_CHECK;
1795 } 2306 }
… …
1852 EV_FREQUENT_CHECK; 2363 EV_FREQUENT_CHECK;
1853 feed_reverse (EV_A_ (W)w); 2364 feed_reverse (EV_A_ (W)w);
1854 } 2365 }
1855 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2366 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1856 2367
1857 feed_reverse_done (EV_A_ EV_TIMEOUT); 2368 feed_reverse_done (EV_A_ EV_TIMER);
1858 } 2369 }
1859} 2370}
1860 2371
1861#if EV_PERIODIC_ENABLE 2372#if EV_PERIODIC_ENABLE
2373
2374static void noinline
2375periodic_recalc (EV_P_ ev_periodic *w)
2376{
2377 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2378 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2379
2380 /* the above almost always errs on the low side */
2381 while (at <= ev_rt_now)
2382 {
2383 ev_tstamp nat = at + w->interval;
2384
2385 /* when resolution fails us, we use ev_rt_now */
2386 if (expect_false (nat == at))
2387 {
2388 at = ev_rt_now;
2389 break;
2390 }
2391
2392 at = nat;
2393 }
2394
2395 ev_at (w) = at;
2396}
2397
1862/* make periodics pending */ 2398/* make periodics pending */
1863inline_size void 2399inline_size void
1864periodics_reify (EV_P) 2400periodics_reify (EV_P)
1865{ 2401{
1866 EV_FREQUENT_CHECK; 2402 EV_FREQUENT_CHECK;
… …
1885 ANHE_at_cache (periodics [HEAP0]); 2421 ANHE_at_cache (periodics [HEAP0]);
1886 downheap (periodics, periodiccnt, HEAP0); 2422 downheap (periodics, periodiccnt, HEAP0);
1887 } 2423 }
1888 else if (w->interval) 2424 else if (w->interval)
1889 { 2425 {
1890 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2426 periodic_recalc (EV_A_ w);
1891 /* if next trigger time is not sufficiently in the future, put it there */
1892 /* this might happen because of floating point inexactness */
1893 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1894 {
1895 ev_at (w) += w->interval;
1896
1897 /* if interval is unreasonably low we might still have a time in the past */
1898 /* so correct this. this will make the periodic very inexact, but the user */
1899 /* has effectively asked to get triggered more often than possible */
1900 if (ev_at (w) < ev_rt_now)
1901 ev_at (w) = ev_rt_now;
1902 }
1903
1904 ANHE_at_cache (periodics [HEAP0]); 2427 ANHE_at_cache (periodics [HEAP0]);
1905 downheap (periodics, periodiccnt, HEAP0); 2428 downheap (periodics, periodiccnt, HEAP0);
1906 } 2429 }
1907 else 2430 else
1908 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2431 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1915 feed_reverse_done (EV_A_ EV_PERIODIC); 2438 feed_reverse_done (EV_A_ EV_PERIODIC);
1916 } 2439 }
1917} 2440}
1918 2441
1919/* simply recalculate all periodics */ 2442/* simply recalculate all periodics */
1920/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2443/* TODO: maybe ensure that at least one event happens when jumping forward? */
1921static void noinline 2444static void noinline ecb_cold
1922periodics_reschedule (EV_P) 2445periodics_reschedule (EV_P)
1923{ 2446{
1924 int i; 2447 int i;
1925 2448
1926 /* adjust periodics after time jump */ 2449 /* adjust periodics after time jump */
… …
1929 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2452 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1930 2453
1931 if (w->reschedule_cb) 2454 if (w->reschedule_cb)
1932 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2455 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1933 else if (w->interval) 2456 else if (w->interval)
1934 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2457 periodic_recalc (EV_A_ w);
1935 2458
1936 ANHE_at_cache (periodics [i]); 2459 ANHE_at_cache (periodics [i]);
1937 } 2460 }
1938 2461
1939 reheap (periodics, periodiccnt); 2462 reheap (periodics, periodiccnt);
1940} 2463}
1941#endif 2464#endif
1942 2465
1943/* adjust all timers by a given offset */ 2466/* adjust all timers by a given offset */
1944static void noinline 2467static void noinline ecb_cold
1945timers_reschedule (EV_P_ ev_tstamp adjust) 2468timers_reschedule (EV_P_ ev_tstamp adjust)
1946{ 2469{
1947 int i; 2470 int i;
1948 2471
1949 for (i = 0; i < timercnt; ++i) 2472 for (i = 0; i < timercnt; ++i)
… …
1953 ANHE_at_cache (*he); 2476 ANHE_at_cache (*he);
1954 } 2477 }
1955} 2478}
1956 2479
1957/* fetch new monotonic and realtime times from the kernel */ 2480/* fetch new monotonic and realtime times from the kernel */
1958/* also detetc if there was a timejump, and act accordingly */ 2481/* also detect if there was a timejump, and act accordingly */
1959inline_speed void 2482inline_speed void
1960time_update (EV_P_ ev_tstamp max_block) 2483time_update (EV_P_ ev_tstamp max_block)
1961{ 2484{
1962#if EV_USE_MONOTONIC 2485#if EV_USE_MONOTONIC
1963 if (expect_true (have_monotonic)) 2486 if (expect_true (have_monotonic))
… …
1986 * doesn't hurt either as we only do this on time-jumps or 2509 * doesn't hurt either as we only do this on time-jumps or
1987 * in the unlikely event of having been preempted here. 2510 * in the unlikely event of having been preempted here.
1988 */ 2511 */
1989 for (i = 4; --i; ) 2512 for (i = 4; --i; )
1990 { 2513 {
2514 ev_tstamp diff;
1991 rtmn_diff = ev_rt_now - mn_now; 2515 rtmn_diff = ev_rt_now - mn_now;
1992 2516
2517 diff = odiff - rtmn_diff;
2518
1993 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2519 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1994 return; /* all is well */ 2520 return; /* all is well */
1995 2521
1996 ev_rt_now = ev_time (); 2522 ev_rt_now = ev_time ();
1997 mn_now = get_clock (); 2523 mn_now = get_clock ();
1998 now_floor = mn_now; 2524 now_floor = mn_now;
… …
2020 2546
2021 mn_now = ev_rt_now; 2547 mn_now = ev_rt_now;
2022 } 2548 }
2023} 2549}
2024 2550
2025static int loop_done;
2026
2027void 2551void
2028ev_loop (EV_P_ int flags) 2552ev_run (EV_P_ int flags)
2029{ 2553{
2554#if EV_FEATURE_API
2555 ++loop_depth;
2556#endif
2557
2558 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2559
2030 loop_done = EVUNLOOP_CANCEL; 2560 loop_done = EVBREAK_CANCEL;
2031 2561
2032 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2562 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2033 2563
2034 do 2564 do
2035 { 2565 {
2036#if EV_VERIFY >= 2 2566#if EV_VERIFY >= 2
2037 ev_loop_verify (EV_A); 2567 ev_verify (EV_A);
2038#endif 2568#endif
2039 2569
2040#ifndef _WIN32 2570#ifndef _WIN32
2041 if (expect_false (curpid)) /* penalise the forking check even more */ 2571 if (expect_false (curpid)) /* penalise the forking check even more */
2042 if (expect_false (getpid () != curpid)) 2572 if (expect_false (getpid () != curpid))
… …
2050 /* we might have forked, so queue fork handlers */ 2580 /* we might have forked, so queue fork handlers */
2051 if (expect_false (postfork)) 2581 if (expect_false (postfork))
2052 if (forkcnt) 2582 if (forkcnt)
2053 { 2583 {
2054 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2584 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2055 call_pending (EV_A); 2585 EV_INVOKE_PENDING;
2056 } 2586 }
2057#endif 2587#endif
2058 2588
2589#if EV_PREPARE_ENABLE
2059 /* queue prepare watchers (and execute them) */ 2590 /* queue prepare watchers (and execute them) */
2060 if (expect_false (preparecnt)) 2591 if (expect_false (preparecnt))
2061 { 2592 {
2062 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2593 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2063 call_pending (EV_A); 2594 EV_INVOKE_PENDING;
2064 } 2595 }
2596#endif
2597
2598 if (expect_false (loop_done))
2599 break;
2065 2600
2066 /* we might have forked, so reify kernel state if necessary */ 2601 /* we might have forked, so reify kernel state if necessary */
2067 if (expect_false (postfork)) 2602 if (expect_false (postfork))
2068 loop_fork (EV_A); 2603 loop_fork (EV_A);
2069 2604
… …
2073 /* calculate blocking time */ 2608 /* calculate blocking time */
2074 { 2609 {
2075 ev_tstamp waittime = 0.; 2610 ev_tstamp waittime = 0.;
2076 ev_tstamp sleeptime = 0.; 2611 ev_tstamp sleeptime = 0.;
2077 2612
2613 /* remember old timestamp for io_blocktime calculation */
2614 ev_tstamp prev_mn_now = mn_now;
2615
2616 /* update time to cancel out callback processing overhead */
2617 time_update (EV_A_ 1e100);
2618
2619 /* from now on, we want a pipe-wake-up */
2620 pipe_write_wanted = 1;
2621
2622 ECB_MEMORY_FENCE; /* amke sure pipe_write_wanted is visible before we check for potential skips */
2623
2078 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2624 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2079 { 2625 {
2080 /* remember old timestamp for io_blocktime calculation */
2081 ev_tstamp prev_mn_now = mn_now;
2082
2083 /* update time to cancel out callback processing overhead */
2084 time_update (EV_A_ 1e100);
2085
2086 waittime = MAX_BLOCKTIME; 2626 waittime = MAX_BLOCKTIME;
2087 2627
2088 if (timercnt) 2628 if (timercnt)
2089 { 2629 {
2090 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2630 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2091 if (waittime > to) waittime = to; 2631 if (waittime > to) waittime = to;
2092 } 2632 }
2093 2633
2094#if EV_PERIODIC_ENABLE 2634#if EV_PERIODIC_ENABLE
2095 if (periodiccnt) 2635 if (periodiccnt)
2096 { 2636 {
2097 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2637 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2098 if (waittime > to) waittime = to; 2638 if (waittime > to) waittime = to;
2099 } 2639 }
2100#endif 2640#endif
2101 2641
2102 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2642 /* don't let timeouts decrease the waittime below timeout_blocktime */
2103 if (expect_false (waittime < timeout_blocktime)) 2643 if (expect_false (waittime < timeout_blocktime))
2104 waittime = timeout_blocktime; 2644 waittime = timeout_blocktime;
2645
2646 /* at this point, we NEED to wait, so we have to ensure */
2647 /* to pass a minimum nonzero value to the backend */
2648 if (expect_false (waittime < backend_mintime))
2649 waittime = backend_mintime;
2105 2650
2106 /* extra check because io_blocktime is commonly 0 */ 2651 /* extra check because io_blocktime is commonly 0 */
2107 if (expect_false (io_blocktime)) 2652 if (expect_false (io_blocktime))
2108 { 2653 {
2109 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2654 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2110 2655
2111 if (sleeptime > waittime - backend_fudge) 2656 if (sleeptime > waittime - backend_mintime)
2112 sleeptime = waittime - backend_fudge; 2657 sleeptime = waittime - backend_mintime;
2113 2658
2114 if (expect_true (sleeptime > 0.)) 2659 if (expect_true (sleeptime > 0.))
2115 { 2660 {
2116 ev_sleep (sleeptime); 2661 ev_sleep (sleeptime);
2117 waittime -= sleeptime; 2662 waittime -= sleeptime;
2118 } 2663 }
2119 } 2664 }
2120 } 2665 }
2121 2666
2667#if EV_FEATURE_API
2122 ++loop_count; 2668 ++loop_count;
2669#endif
2670 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2123 backend_poll (EV_A_ waittime); 2671 backend_poll (EV_A_ waittime);
2672 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2673
2674 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2675
2676 if (pipe_write_skipped)
2677 {
2678 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2679 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2680 }
2681
2124 2682
2125 /* update ev_rt_now, do magic */ 2683 /* update ev_rt_now, do magic */
2126 time_update (EV_A_ waittime + sleeptime); 2684 time_update (EV_A_ waittime + sleeptime);
2127 } 2685 }
2128 2686
… …
2135#if EV_IDLE_ENABLE 2693#if EV_IDLE_ENABLE
2136 /* queue idle watchers unless other events are pending */ 2694 /* queue idle watchers unless other events are pending */
2137 idle_reify (EV_A); 2695 idle_reify (EV_A);
2138#endif 2696#endif
2139 2697
2698#if EV_CHECK_ENABLE
2140 /* queue check watchers, to be executed first */ 2699 /* queue check watchers, to be executed first */
2141 if (expect_false (checkcnt)) 2700 if (expect_false (checkcnt))
2142 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2701 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2702#endif
2143 2703
2144 call_pending (EV_A); 2704 EV_INVOKE_PENDING;
2145 } 2705 }
2146 while (expect_true ( 2706 while (expect_true (
2147 activecnt 2707 activecnt
2148 && !loop_done 2708 && !loop_done
2149 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2709 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2150 )); 2710 ));
2151 2711
2152 if (loop_done == EVUNLOOP_ONE) 2712 if (loop_done == EVBREAK_ONE)
2153 loop_done = EVUNLOOP_CANCEL; 2713 loop_done = EVBREAK_CANCEL;
2714
2715#if EV_FEATURE_API
2716 --loop_depth;
2717#endif
2154} 2718}
2155 2719
2156void 2720void
2157ev_unloop (EV_P_ int how) 2721ev_break (EV_P_ int how)
2158{ 2722{
2159 loop_done = how; 2723 loop_done = how;
2160} 2724}
2161 2725
2162void 2726void
… …
2209inline_size void 2773inline_size void
2210wlist_del (WL *head, WL elem) 2774wlist_del (WL *head, WL elem)
2211{ 2775{
2212 while (*head) 2776 while (*head)
2213 { 2777 {
2214 if (*head == elem) 2778 if (expect_true (*head == elem))
2215 { 2779 {
2216 *head = elem->next; 2780 *head = elem->next;
2217 return; 2781 break;
2218 } 2782 }
2219 2783
2220 head = &(*head)->next; 2784 head = &(*head)->next;
2221 } 2785 }
2222} 2786}
… …
2250} 2814}
2251 2815
2252inline_size void 2816inline_size void
2253pri_adjust (EV_P_ W w) 2817pri_adjust (EV_P_ W w)
2254{ 2818{
2255 int pri = w->priority; 2819 int pri = ev_priority (w);
2256 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2820 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2257 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2821 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2258 w->priority = pri; 2822 ev_set_priority (w, pri);
2259} 2823}
2260 2824
2261inline_speed void 2825inline_speed void
2262ev_start (EV_P_ W w, int active) 2826ev_start (EV_P_ W w, int active)
2263{ 2827{
… …
2282 2846
2283 if (expect_false (ev_is_active (w))) 2847 if (expect_false (ev_is_active (w)))
2284 return; 2848 return;
2285 2849
2286 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2850 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2287 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2851 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2288 2852
2289 EV_FREQUENT_CHECK; 2853 EV_FREQUENT_CHECK;
2290 2854
2291 ev_start (EV_A_ (W)w, 1); 2855 ev_start (EV_A_ (W)w, 1);
2292 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2856 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2293 wlist_add (&anfds[fd].head, (WL)w); 2857 wlist_add (&anfds[fd].head, (WL)w);
2294 2858
2295 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 2859 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2296 w->events &= ~EV__IOFDSET; 2860 w->events &= ~EV__IOFDSET;
2297 2861
2298 EV_FREQUENT_CHECK; 2862 EV_FREQUENT_CHECK;
2299} 2863}
2300 2864
… …
2310 EV_FREQUENT_CHECK; 2874 EV_FREQUENT_CHECK;
2311 2875
2312 wlist_del (&anfds[w->fd].head, (WL)w); 2876 wlist_del (&anfds[w->fd].head, (WL)w);
2313 ev_stop (EV_A_ (W)w); 2877 ev_stop (EV_A_ (W)w);
2314 2878
2315 fd_change (EV_A_ w->fd, 1); 2879 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2316 2880
2317 EV_FREQUENT_CHECK; 2881 EV_FREQUENT_CHECK;
2318} 2882}
2319 2883
2320void noinline 2884void noinline
… …
2362 timers [active] = timers [timercnt + HEAP0]; 2926 timers [active] = timers [timercnt + HEAP0];
2363 adjustheap (timers, timercnt, active); 2927 adjustheap (timers, timercnt, active);
2364 } 2928 }
2365 } 2929 }
2366 2930
2367 EV_FREQUENT_CHECK;
2368
2369 ev_at (w) -= mn_now; 2931 ev_at (w) -= mn_now;
2370 2932
2371 ev_stop (EV_A_ (W)w); 2933 ev_stop (EV_A_ (W)w);
2934
2935 EV_FREQUENT_CHECK;
2372} 2936}
2373 2937
2374void noinline 2938void noinline
2375ev_timer_again (EV_P_ ev_timer *w) 2939ev_timer_again (EV_P_ ev_timer *w)
2376{ 2940{
… …
2394 } 2958 }
2395 2959
2396 EV_FREQUENT_CHECK; 2960 EV_FREQUENT_CHECK;
2397} 2961}
2398 2962
2963ev_tstamp
2964ev_timer_remaining (EV_P_ ev_timer *w)
2965{
2966 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2967}
2968
2399#if EV_PERIODIC_ENABLE 2969#if EV_PERIODIC_ENABLE
2400void noinline 2970void noinline
2401ev_periodic_start (EV_P_ ev_periodic *w) 2971ev_periodic_start (EV_P_ ev_periodic *w)
2402{ 2972{
2403 if (expect_false (ev_is_active (w))) 2973 if (expect_false (ev_is_active (w)))
… …
2406 if (w->reschedule_cb) 2976 if (w->reschedule_cb)
2407 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2977 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2408 else if (w->interval) 2978 else if (w->interval)
2409 { 2979 {
2410 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2980 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2411 /* this formula differs from the one in periodic_reify because we do not always round up */ 2981 periodic_recalc (EV_A_ w);
2412 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2413 } 2982 }
2414 else 2983 else
2415 ev_at (w) = w->offset; 2984 ev_at (w) = w->offset;
2416 2985
2417 EV_FREQUENT_CHECK; 2986 EV_FREQUENT_CHECK;
… …
2449 periodics [active] = periodics [periodiccnt + HEAP0]; 3018 periodics [active] = periodics [periodiccnt + HEAP0];
2450 adjustheap (periodics, periodiccnt, active); 3019 adjustheap (periodics, periodiccnt, active);
2451 } 3020 }
2452 } 3021 }
2453 3022
2454 EV_FREQUENT_CHECK;
2455
2456 ev_stop (EV_A_ (W)w); 3023 ev_stop (EV_A_ (W)w);
3024
3025 EV_FREQUENT_CHECK;
2457} 3026}
2458 3027
2459void noinline 3028void noinline
2460ev_periodic_again (EV_P_ ev_periodic *w) 3029ev_periodic_again (EV_P_ ev_periodic *w)
2461{ 3030{
… …
2467 3036
2468#ifndef SA_RESTART 3037#ifndef SA_RESTART
2469# define SA_RESTART 0 3038# define SA_RESTART 0
2470#endif 3039#endif
2471 3040
3041#if EV_SIGNAL_ENABLE
3042
2472void noinline 3043void noinline
2473ev_signal_start (EV_P_ ev_signal *w) 3044ev_signal_start (EV_P_ ev_signal *w)
2474{ 3045{
2475#if EV_MULTIPLICITY
2476 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2477#endif
2478 if (expect_false (ev_is_active (w))) 3046 if (expect_false (ev_is_active (w)))
2479 return; 3047 return;
2480 3048
2481 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3049 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2482 3050
2483 evpipe_init (EV_A); 3051#if EV_MULTIPLICITY
3052 assert (("libev: a signal must not be attached to two different loops",
3053 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2484 3054
2485 EV_FREQUENT_CHECK; 3055 signals [w->signum - 1].loop = EV_A;
3056#endif
2486 3057
3058 EV_FREQUENT_CHECK;
3059
3060#if EV_USE_SIGNALFD
3061 if (sigfd == -2)
2487 { 3062 {
2488#ifndef _WIN32 3063 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2489 sigset_t full, prev; 3064 if (sigfd < 0 && errno == EINVAL)
2490 sigfillset (&full); 3065 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2491 sigprocmask (SIG_SETMASK, &full, &prev);
2492#endif
2493 3066
2494 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3067 if (sigfd >= 0)
3068 {
3069 fd_intern (sigfd); /* doing it twice will not hurt */
2495 3070
2496#ifndef _WIN32 3071 sigemptyset (&sigfd_set);
2497 sigprocmask (SIG_SETMASK, &prev, 0); 3072
2498#endif 3073 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3074 ev_set_priority (&sigfd_w, EV_MAXPRI);
3075 ev_io_start (EV_A_ &sigfd_w);
3076 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3077 }
2499 } 3078 }
3079
3080 if (sigfd >= 0)
3081 {
3082 /* TODO: check .head */
3083 sigaddset (&sigfd_set, w->signum);
3084 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3085
3086 signalfd (sigfd, &sigfd_set, 0);
3087 }
3088#endif
2500 3089
2501 ev_start (EV_A_ (W)w, 1); 3090 ev_start (EV_A_ (W)w, 1);
2502 wlist_add (&signals [w->signum - 1].head, (WL)w); 3091 wlist_add (&signals [w->signum - 1].head, (WL)w);
2503 3092
2504 if (!((WL)w)->next) 3093 if (!((WL)w)->next)
3094# if EV_USE_SIGNALFD
3095 if (sigfd < 0) /*TODO*/
3096# endif
2505 { 3097 {
2506#if _WIN32 3098# ifdef _WIN32
3099 evpipe_init (EV_A);
3100
2507 signal (w->signum, ev_sighandler); 3101 signal (w->signum, ev_sighandler);
2508#else 3102# else
2509 struct sigaction sa; 3103 struct sigaction sa;
3104
3105 evpipe_init (EV_A);
3106
2510 sa.sa_handler = ev_sighandler; 3107 sa.sa_handler = ev_sighandler;
2511 sigfillset (&sa.sa_mask); 3108 sigfillset (&sa.sa_mask);
2512 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3109 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2513 sigaction (w->signum, &sa, 0); 3110 sigaction (w->signum, &sa, 0);
3111
3112 if (origflags & EVFLAG_NOSIGMASK)
3113 {
3114 sigemptyset (&sa.sa_mask);
3115 sigaddset (&sa.sa_mask, w->signum);
3116 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3117 }
2514#endif 3118#endif
2515 } 3119 }
2516 3120
2517 EV_FREQUENT_CHECK; 3121 EV_FREQUENT_CHECK;
2518} 3122}
2519 3123
2520void noinline 3124void noinline
… …
2528 3132
2529 wlist_del (&signals [w->signum - 1].head, (WL)w); 3133 wlist_del (&signals [w->signum - 1].head, (WL)w);
2530 ev_stop (EV_A_ (W)w); 3134 ev_stop (EV_A_ (W)w);
2531 3135
2532 if (!signals [w->signum - 1].head) 3136 if (!signals [w->signum - 1].head)
3137 {
3138#if EV_MULTIPLICITY
3139 signals [w->signum - 1].loop = 0; /* unattach from signal */
3140#endif
3141#if EV_USE_SIGNALFD
3142 if (sigfd >= 0)
3143 {
3144 sigset_t ss;
3145
3146 sigemptyset (&ss);
3147 sigaddset (&ss, w->signum);
3148 sigdelset (&sigfd_set, w->signum);
3149
3150 signalfd (sigfd, &sigfd_set, 0);
3151 sigprocmask (SIG_UNBLOCK, &ss, 0);
3152 }
3153 else
3154#endif
2533 signal (w->signum, SIG_DFL); 3155 signal (w->signum, SIG_DFL);
3156 }
2534 3157
2535 EV_FREQUENT_CHECK; 3158 EV_FREQUENT_CHECK;
2536} 3159}
3160
3161#endif
3162
3163#if EV_CHILD_ENABLE
2537 3164
2538void 3165void
2539ev_child_start (EV_P_ ev_child *w) 3166ev_child_start (EV_P_ ev_child *w)
2540{ 3167{
2541#if EV_MULTIPLICITY 3168#if EV_MULTIPLICITY
… …
2545 return; 3172 return;
2546 3173
2547 EV_FREQUENT_CHECK; 3174 EV_FREQUENT_CHECK;
2548 3175
2549 ev_start (EV_A_ (W)w, 1); 3176 ev_start (EV_A_ (W)w, 1);
2550 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3177 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2551 3178
2552 EV_FREQUENT_CHECK; 3179 EV_FREQUENT_CHECK;
2553} 3180}
2554 3181
2555void 3182void
… …
2559 if (expect_false (!ev_is_active (w))) 3186 if (expect_false (!ev_is_active (w)))
2560 return; 3187 return;
2561 3188
2562 EV_FREQUENT_CHECK; 3189 EV_FREQUENT_CHECK;
2563 3190
2564 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3191 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2565 ev_stop (EV_A_ (W)w); 3192 ev_stop (EV_A_ (W)w);
2566 3193
2567 EV_FREQUENT_CHECK; 3194 EV_FREQUENT_CHECK;
2568} 3195}
3196
3197#endif
2569 3198
2570#if EV_STAT_ENABLE 3199#if EV_STAT_ENABLE
2571 3200
2572# ifdef _WIN32 3201# ifdef _WIN32
2573# undef lstat 3202# undef lstat
… …
2579#define MIN_STAT_INTERVAL 0.1074891 3208#define MIN_STAT_INTERVAL 0.1074891
2580 3209
2581static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3210static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2582 3211
2583#if EV_USE_INOTIFY 3212#if EV_USE_INOTIFY
2584# define EV_INOTIFY_BUFSIZE 8192 3213
3214/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3215# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2585 3216
2586static void noinline 3217static void noinline
2587infy_add (EV_P_ ev_stat *w) 3218infy_add (EV_P_ ev_stat *w)
2588{ 3219{
2589 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3220 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2590 3221
2591 if (w->wd < 0) 3222 if (w->wd >= 0)
3223 {
3224 struct statfs sfs;
3225
3226 /* now local changes will be tracked by inotify, but remote changes won't */
3227 /* unless the filesystem is known to be local, we therefore still poll */
3228 /* also do poll on <2.6.25, but with normal frequency */
3229
3230 if (!fs_2625)
3231 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3232 else if (!statfs (w->path, &sfs)
3233 && (sfs.f_type == 0x1373 /* devfs */
3234 || sfs.f_type == 0xEF53 /* ext2/3 */
3235 || sfs.f_type == 0x3153464a /* jfs */
3236 || sfs.f_type == 0x52654973 /* reiser3 */
3237 || sfs.f_type == 0x01021994 /* tempfs */
3238 || sfs.f_type == 0x58465342 /* xfs */))
3239 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3240 else
3241 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2592 { 3242 }
3243 else
3244 {
3245 /* can't use inotify, continue to stat */
2593 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3246 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2594 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2595 3247
2596 /* monitor some parent directory for speedup hints */ 3248 /* if path is not there, monitor some parent directory for speedup hints */
2597 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3249 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2598 /* but an efficiency issue only */ 3250 /* but an efficiency issue only */
2599 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3251 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2600 { 3252 {
2601 char path [4096]; 3253 char path [4096];
… …
2611 if (!pend || pend == path) 3263 if (!pend || pend == path)
2612 break; 3264 break;
2613 3265
2614 *pend = 0; 3266 *pend = 0;
2615 w->wd = inotify_add_watch (fs_fd, path, mask); 3267 w->wd = inotify_add_watch (fs_fd, path, mask);
2616 } 3268 }
2617 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3269 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2618 } 3270 }
2619 } 3271 }
2620 3272
2621 if (w->wd >= 0) 3273 if (w->wd >= 0)
2622 {
2623 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3274 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2624 3275
2625 /* now local changes will be tracked by inotify, but remote changes won't */ 3276 /* now re-arm timer, if required */
2626 /* unless the filesystem it known to be local, we therefore still poll */ 3277 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2627 /* also do poll on <2.6.25, but with normal frequency */
2628 struct statfs sfs;
2629
2630 if (fs_2625 && !statfs (w->path, &sfs))
2631 if (sfs.f_type == 0x1373 /* devfs */
2632 || sfs.f_type == 0xEF53 /* ext2/3 */
2633 || sfs.f_type == 0x3153464a /* jfs */
2634 || sfs.f_type == 0x52654973 /* reiser3 */
2635 || sfs.f_type == 0x01021994 /* tempfs */
2636 || sfs.f_type == 0x58465342 /* xfs */)
2637 return;
2638
2639 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2640 ev_timer_again (EV_A_ &w->timer); 3278 ev_timer_again (EV_A_ &w->timer);
2641 } 3279 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2642} 3280}
2643 3281
2644static void noinline 3282static void noinline
2645infy_del (EV_P_ ev_stat *w) 3283infy_del (EV_P_ ev_stat *w)
2646{ 3284{
… …
2649 3287
2650 if (wd < 0) 3288 if (wd < 0)
2651 return; 3289 return;
2652 3290
2653 w->wd = -2; 3291 w->wd = -2;
2654 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3292 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2655 wlist_del (&fs_hash [slot].head, (WL)w); 3293 wlist_del (&fs_hash [slot].head, (WL)w);
2656 3294
2657 /* remove this watcher, if others are watching it, they will rearm */ 3295 /* remove this watcher, if others are watching it, they will rearm */
2658 inotify_rm_watch (fs_fd, wd); 3296 inotify_rm_watch (fs_fd, wd);
2659} 3297}
… …
2661static void noinline 3299static void noinline
2662infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3300infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2663{ 3301{
2664 if (slot < 0) 3302 if (slot < 0)
2665 /* overflow, need to check for all hash slots */ 3303 /* overflow, need to check for all hash slots */
2666 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3304 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2667 infy_wd (EV_A_ slot, wd, ev); 3305 infy_wd (EV_A_ slot, wd, ev);
2668 else 3306 else
2669 { 3307 {
2670 WL w_; 3308 WL w_;
2671 3309
2672 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3310 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2673 { 3311 {
2674 ev_stat *w = (ev_stat *)w_; 3312 ev_stat *w = (ev_stat *)w_;
2675 w_ = w_->next; /* lets us remove this watcher and all before it */ 3313 w_ = w_->next; /* lets us remove this watcher and all before it */
2676 3314
2677 if (w->wd == wd || wd == -1) 3315 if (w->wd == wd || wd == -1)
2678 { 3316 {
2679 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3317 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2680 { 3318 {
2681 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3319 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2682 w->wd = -1; 3320 w->wd = -1;
2683 infy_add (EV_A_ w); /* re-add, no matter what */ 3321 infy_add (EV_A_ w); /* re-add, no matter what */
2684 } 3322 }
2685 3323
2686 stat_timer_cb (EV_A_ &w->timer, 0); 3324 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2691 3329
2692static void 3330static void
2693infy_cb (EV_P_ ev_io *w, int revents) 3331infy_cb (EV_P_ ev_io *w, int revents)
2694{ 3332{
2695 char buf [EV_INOTIFY_BUFSIZE]; 3333 char buf [EV_INOTIFY_BUFSIZE];
2696 struct inotify_event *ev = (struct inotify_event *)buf;
2697 int ofs; 3334 int ofs;
2698 int len = read (fs_fd, buf, sizeof (buf)); 3335 int len = read (fs_fd, buf, sizeof (buf));
2699 3336
2700 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3337 for (ofs = 0; ofs < len; )
3338 {
3339 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2701 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3340 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3341 ofs += sizeof (struct inotify_event) + ev->len;
3342 }
2702} 3343}
2703 3344
2704inline_size void 3345inline_size void ecb_cold
2705check_2625 (EV_P) 3346ev_check_2625 (EV_P)
2706{ 3347{
2707 /* kernels < 2.6.25 are borked 3348 /* kernels < 2.6.25 are borked
2708 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3349 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2709 */ 3350 */
2710 struct utsname buf; 3351 if (ev_linux_version () < 0x020619)
2711 int major, minor, micro;
2712
2713 if (uname (&buf))
2714 return; 3352 return;
2715 3353
2716 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2717 return;
2718
2719 if (major < 2
2720 || (major == 2 && minor < 6)
2721 || (major == 2 && minor == 6 && micro < 25))
2722 return;
2723
2724 fs_2625 = 1; 3354 fs_2625 = 1;
3355}
3356
3357inline_size int
3358infy_newfd (void)
3359{
3360#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3361 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3362 if (fd >= 0)
3363 return fd;
3364#endif
3365 return inotify_init ();
2725} 3366}
2726 3367
2727inline_size void 3368inline_size void
2728infy_init (EV_P) 3369infy_init (EV_P)
2729{ 3370{
2730 if (fs_fd != -2) 3371 if (fs_fd != -2)
2731 return; 3372 return;
2732 3373
2733 fs_fd = -1; 3374 fs_fd = -1;
2734 3375
2735 check_2625 (EV_A); 3376 ev_check_2625 (EV_A);
2736 3377
2737 fs_fd = inotify_init (); 3378 fs_fd = infy_newfd ();
2738 3379
2739 if (fs_fd >= 0) 3380 if (fs_fd >= 0)
2740 { 3381 {
3382 fd_intern (fs_fd);
2741 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3383 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2742 ev_set_priority (&fs_w, EV_MAXPRI); 3384 ev_set_priority (&fs_w, EV_MAXPRI);
2743 ev_io_start (EV_A_ &fs_w); 3385 ev_io_start (EV_A_ &fs_w);
3386 ev_unref (EV_A);
2744 } 3387 }
2745} 3388}
2746 3389
2747inline_size void 3390inline_size void
2748infy_fork (EV_P) 3391infy_fork (EV_P)
… …
2750 int slot; 3393 int slot;
2751 3394
2752 if (fs_fd < 0) 3395 if (fs_fd < 0)
2753 return; 3396 return;
2754 3397
3398 ev_ref (EV_A);
3399 ev_io_stop (EV_A_ &fs_w);
2755 close (fs_fd); 3400 close (fs_fd);
2756 fs_fd = inotify_init (); 3401 fs_fd = infy_newfd ();
2757 3402
3403 if (fs_fd >= 0)
3404 {
3405 fd_intern (fs_fd);
3406 ev_io_set (&fs_w, fs_fd, EV_READ);
3407 ev_io_start (EV_A_ &fs_w);
3408 ev_unref (EV_A);
3409 }
3410
2758 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3411 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2759 { 3412 {
2760 WL w_ = fs_hash [slot].head; 3413 WL w_ = fs_hash [slot].head;
2761 fs_hash [slot].head = 0; 3414 fs_hash [slot].head = 0;
2762 3415
2763 while (w_) 3416 while (w_)
… …
2768 w->wd = -1; 3421 w->wd = -1;
2769 3422
2770 if (fs_fd >= 0) 3423 if (fs_fd >= 0)
2771 infy_add (EV_A_ w); /* re-add, no matter what */ 3424 infy_add (EV_A_ w); /* re-add, no matter what */
2772 else 3425 else
3426 {
3427 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3428 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2773 ev_timer_again (EV_A_ &w->timer); 3429 ev_timer_again (EV_A_ &w->timer);
3430 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3431 }
2774 } 3432 }
2775 } 3433 }
2776} 3434}
2777 3435
2778#endif 3436#endif
… …
2795static void noinline 3453static void noinline
2796stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3454stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2797{ 3455{
2798 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3456 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2799 3457
2800 /* we copy this here each the time so that */ 3458 ev_statdata prev = w->attr;
2801 /* prev has the old value when the callback gets invoked */
2802 w->prev = w->attr;
2803 ev_stat_stat (EV_A_ w); 3459 ev_stat_stat (EV_A_ w);
2804 3460
2805 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3461 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2806 if ( 3462 if (
2807 w->prev.st_dev != w->attr.st_dev 3463 prev.st_dev != w->attr.st_dev
2808 || w->prev.st_ino != w->attr.st_ino 3464 || prev.st_ino != w->attr.st_ino
2809 || w->prev.st_mode != w->attr.st_mode 3465 || prev.st_mode != w->attr.st_mode
2810 || w->prev.st_nlink != w->attr.st_nlink 3466 || prev.st_nlink != w->attr.st_nlink
2811 || w->prev.st_uid != w->attr.st_uid 3467 || prev.st_uid != w->attr.st_uid
2812 || w->prev.st_gid != w->attr.st_gid 3468 || prev.st_gid != w->attr.st_gid
2813 || w->prev.st_rdev != w->attr.st_rdev 3469 || prev.st_rdev != w->attr.st_rdev
2814 || w->prev.st_size != w->attr.st_size 3470 || prev.st_size != w->attr.st_size
2815 || w->prev.st_atime != w->attr.st_atime 3471 || prev.st_atime != w->attr.st_atime
2816 || w->prev.st_mtime != w->attr.st_mtime 3472 || prev.st_mtime != w->attr.st_mtime
2817 || w->prev.st_ctime != w->attr.st_ctime 3473 || prev.st_ctime != w->attr.st_ctime
2818 ) { 3474 ) {
3475 /* we only update w->prev on actual differences */
3476 /* in case we test more often than invoke the callback, */
3477 /* to ensure that prev is always different to attr */
3478 w->prev = prev;
3479
2819 #if EV_USE_INOTIFY 3480 #if EV_USE_INOTIFY
2820 if (fs_fd >= 0) 3481 if (fs_fd >= 0)
2821 { 3482 {
2822 infy_del (EV_A_ w); 3483 infy_del (EV_A_ w);
2823 infy_add (EV_A_ w); 3484 infy_add (EV_A_ w);
… …
2848 3509
2849 if (fs_fd >= 0) 3510 if (fs_fd >= 0)
2850 infy_add (EV_A_ w); 3511 infy_add (EV_A_ w);
2851 else 3512 else
2852#endif 3513#endif
3514 {
2853 ev_timer_again (EV_A_ &w->timer); 3515 ev_timer_again (EV_A_ &w->timer);
3516 ev_unref (EV_A);
3517 }
2854 3518
2855 ev_start (EV_A_ (W)w, 1); 3519 ev_start (EV_A_ (W)w, 1);
2856 3520
2857 EV_FREQUENT_CHECK; 3521 EV_FREQUENT_CHECK;
2858} 3522}
… …
2867 EV_FREQUENT_CHECK; 3531 EV_FREQUENT_CHECK;
2868 3532
2869#if EV_USE_INOTIFY 3533#if EV_USE_INOTIFY
2870 infy_del (EV_A_ w); 3534 infy_del (EV_A_ w);
2871#endif 3535#endif
3536
3537 if (ev_is_active (&w->timer))
3538 {
3539 ev_ref (EV_A);
2872 ev_timer_stop (EV_A_ &w->timer); 3540 ev_timer_stop (EV_A_ &w->timer);
3541 }
2873 3542
2874 ev_stop (EV_A_ (W)w); 3543 ev_stop (EV_A_ (W)w);
2875 3544
2876 EV_FREQUENT_CHECK; 3545 EV_FREQUENT_CHECK;
2877} 3546}
… …
2922 3591
2923 EV_FREQUENT_CHECK; 3592 EV_FREQUENT_CHECK;
2924} 3593}
2925#endif 3594#endif
2926 3595
3596#if EV_PREPARE_ENABLE
2927void 3597void
2928ev_prepare_start (EV_P_ ev_prepare *w) 3598ev_prepare_start (EV_P_ ev_prepare *w)
2929{ 3599{
2930 if (expect_false (ev_is_active (w))) 3600 if (expect_false (ev_is_active (w)))
2931 return; 3601 return;
… …
2957 3627
2958 ev_stop (EV_A_ (W)w); 3628 ev_stop (EV_A_ (W)w);
2959 3629
2960 EV_FREQUENT_CHECK; 3630 EV_FREQUENT_CHECK;
2961} 3631}
3632#endif
2962 3633
3634#if EV_CHECK_ENABLE
2963void 3635void
2964ev_check_start (EV_P_ ev_check *w) 3636ev_check_start (EV_P_ ev_check *w)
2965{ 3637{
2966 if (expect_false (ev_is_active (w))) 3638 if (expect_false (ev_is_active (w)))
2967 return; 3639 return;
… …
2993 3665
2994 ev_stop (EV_A_ (W)w); 3666 ev_stop (EV_A_ (W)w);
2995 3667
2996 EV_FREQUENT_CHECK; 3668 EV_FREQUENT_CHECK;
2997} 3669}
3670#endif
2998 3671
2999#if EV_EMBED_ENABLE 3672#if EV_EMBED_ENABLE
3000void noinline 3673void noinline
3001ev_embed_sweep (EV_P_ ev_embed *w) 3674ev_embed_sweep (EV_P_ ev_embed *w)
3002{ 3675{
3003 ev_loop (w->other, EVLOOP_NONBLOCK); 3676 ev_run (w->other, EVRUN_NOWAIT);
3004} 3677}
3005 3678
3006static void 3679static void
3007embed_io_cb (EV_P_ ev_io *io, int revents) 3680embed_io_cb (EV_P_ ev_io *io, int revents)
3008{ 3681{
3009 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3682 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3010 3683
3011 if (ev_cb (w)) 3684 if (ev_cb (w))
3012 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3685 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3013 else 3686 else
3014 ev_loop (w->other, EVLOOP_NONBLOCK); 3687 ev_run (w->other, EVRUN_NOWAIT);
3015} 3688}
3016 3689
3017static void 3690static void
3018embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3691embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3019{ 3692{
3020 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3693 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3021 3694
3022 { 3695 {
3023 struct ev_loop *loop = w->other; 3696 EV_P = w->other;
3024 3697
3025 while (fdchangecnt) 3698 while (fdchangecnt)
3026 { 3699 {
3027 fd_reify (EV_A); 3700 fd_reify (EV_A);
3028 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3701 ev_run (EV_A_ EVRUN_NOWAIT);
3029 } 3702 }
3030 } 3703 }
3031} 3704}
3032 3705
3033static void 3706static void
… …
3036 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3709 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3037 3710
3038 ev_embed_stop (EV_A_ w); 3711 ev_embed_stop (EV_A_ w);
3039 3712
3040 { 3713 {
3041 struct ev_loop *loop = w->other; 3714 EV_P = w->other;
3042 3715
3043 ev_loop_fork (EV_A); 3716 ev_loop_fork (EV_A);
3044 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3717 ev_run (EV_A_ EVRUN_NOWAIT);
3045 } 3718 }
3046 3719
3047 ev_embed_start (EV_A_ w); 3720 ev_embed_start (EV_A_ w);
3048} 3721}
3049 3722
… …
3060{ 3733{
3061 if (expect_false (ev_is_active (w))) 3734 if (expect_false (ev_is_active (w)))
3062 return; 3735 return;
3063 3736
3064 { 3737 {
3065 struct ev_loop *loop = w->other; 3738 EV_P = w->other;
3066 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3739 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3067 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3740 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3068 } 3741 }
3069 3742
3070 EV_FREQUENT_CHECK; 3743 EV_FREQUENT_CHECK;
… …
3097 3770
3098 ev_io_stop (EV_A_ &w->io); 3771 ev_io_stop (EV_A_ &w->io);
3099 ev_prepare_stop (EV_A_ &w->prepare); 3772 ev_prepare_stop (EV_A_ &w->prepare);
3100 ev_fork_stop (EV_A_ &w->fork); 3773 ev_fork_stop (EV_A_ &w->fork);
3101 3774
3775 ev_stop (EV_A_ (W)w);
3776
3102 EV_FREQUENT_CHECK; 3777 EV_FREQUENT_CHECK;
3103} 3778}
3104#endif 3779#endif
3105 3780
3106#if EV_FORK_ENABLE 3781#if EV_FORK_ENABLE
… …
3139 3814
3140 EV_FREQUENT_CHECK; 3815 EV_FREQUENT_CHECK;
3141} 3816}
3142#endif 3817#endif
3143 3818
3819#if EV_CLEANUP_ENABLE
3820void
3821ev_cleanup_start (EV_P_ ev_cleanup *w)
3822{
3823 if (expect_false (ev_is_active (w)))
3824 return;
3825
3826 EV_FREQUENT_CHECK;
3827
3828 ev_start (EV_A_ (W)w, ++cleanupcnt);
3829 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3830 cleanups [cleanupcnt - 1] = w;
3831
3832 /* cleanup watchers should never keep a refcount on the loop */
3833 ev_unref (EV_A);
3834 EV_FREQUENT_CHECK;
3835}
3836
3837void
3838ev_cleanup_stop (EV_P_ ev_cleanup *w)
3839{
3840 clear_pending (EV_A_ (W)w);
3841 if (expect_false (!ev_is_active (w)))
3842 return;
3843
3844 EV_FREQUENT_CHECK;
3845 ev_ref (EV_A);
3846
3847 {
3848 int active = ev_active (w);
3849
3850 cleanups [active - 1] = cleanups [--cleanupcnt];
3851 ev_active (cleanups [active - 1]) = active;
3852 }
3853
3854 ev_stop (EV_A_ (W)w);
3855
3856 EV_FREQUENT_CHECK;
3857}
3858#endif
3859
3144#if EV_ASYNC_ENABLE 3860#if EV_ASYNC_ENABLE
3145void 3861void
3146ev_async_start (EV_P_ ev_async *w) 3862ev_async_start (EV_P_ ev_async *w)
3147{ 3863{
3148 if (expect_false (ev_is_active (w))) 3864 if (expect_false (ev_is_active (w)))
3149 return; 3865 return;
3150 3866
3867 w->sent = 0;
3868
3151 evpipe_init (EV_A); 3869 evpipe_init (EV_A);
3152 3870
3153 EV_FREQUENT_CHECK; 3871 EV_FREQUENT_CHECK;
3154 3872
3155 ev_start (EV_A_ (W)w, ++asynccnt); 3873 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3182 3900
3183void 3901void
3184ev_async_send (EV_P_ ev_async *w) 3902ev_async_send (EV_P_ ev_async *w)
3185{ 3903{
3186 w->sent = 1; 3904 w->sent = 1;
3187 evpipe_write (EV_A_ &gotasync); 3905 evpipe_write (EV_A_ &async_pending);
3188} 3906}
3189#endif 3907#endif
3190 3908
3191/*****************************************************************************/ 3909/*****************************************************************************/
3192 3910
… …
3232{ 3950{
3233 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3951 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3234 3952
3235 if (expect_false (!once)) 3953 if (expect_false (!once))
3236 { 3954 {
3237 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3955 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3238 return; 3956 return;
3239 } 3957 }
3240 3958
3241 once->cb = cb; 3959 once->cb = cb;
3242 once->arg = arg; 3960 once->arg = arg;
… …
3257} 3975}
3258 3976
3259/*****************************************************************************/ 3977/*****************************************************************************/
3260 3978
3261#if EV_WALK_ENABLE 3979#if EV_WALK_ENABLE
3262void 3980void ecb_cold
3263ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 3981ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3264{ 3982{
3265 int i, j; 3983 int i, j;
3266 ev_watcher_list *wl, *wn; 3984 ev_watcher_list *wl, *wn;
3267 3985
… …
3329 if (types & EV_ASYNC) 4047 if (types & EV_ASYNC)
3330 for (i = asynccnt; i--; ) 4048 for (i = asynccnt; i--; )
3331 cb (EV_A_ EV_ASYNC, asyncs [i]); 4049 cb (EV_A_ EV_ASYNC, asyncs [i]);
3332#endif 4050#endif
3333 4051
4052#if EV_PREPARE_ENABLE
3334 if (types & EV_PREPARE) 4053 if (types & EV_PREPARE)
3335 for (i = preparecnt; i--; ) 4054 for (i = preparecnt; i--; )
3336#if EV_EMBED_ENABLE 4055# if EV_EMBED_ENABLE
3337 if (ev_cb (prepares [i]) != embed_prepare_cb) 4056 if (ev_cb (prepares [i]) != embed_prepare_cb)
3338#endif 4057# endif
3339 cb (EV_A_ EV_PREPARE, prepares [i]); 4058 cb (EV_A_ EV_PREPARE, prepares [i]);
4059#endif
3340 4060
4061#if EV_CHECK_ENABLE
3341 if (types & EV_CHECK) 4062 if (types & EV_CHECK)
3342 for (i = checkcnt; i--; ) 4063 for (i = checkcnt; i--; )
3343 cb (EV_A_ EV_CHECK, checks [i]); 4064 cb (EV_A_ EV_CHECK, checks [i]);
4065#endif
3344 4066
4067#if EV_SIGNAL_ENABLE
3345 if (types & EV_SIGNAL) 4068 if (types & EV_SIGNAL)
3346 for (i = 0; i < signalmax; ++i) 4069 for (i = 0; i < EV_NSIG - 1; ++i)
3347 for (wl = signals [i].head; wl; ) 4070 for (wl = signals [i].head; wl; )
3348 { 4071 {
3349 wn = wl->next; 4072 wn = wl->next;
3350 cb (EV_A_ EV_SIGNAL, wl); 4073 cb (EV_A_ EV_SIGNAL, wl);
3351 wl = wn; 4074 wl = wn;
3352 } 4075 }
4076#endif
3353 4077
4078#if EV_CHILD_ENABLE
3354 if (types & EV_CHILD) 4079 if (types & EV_CHILD)
3355 for (i = EV_PID_HASHSIZE; i--; ) 4080 for (i = (EV_PID_HASHSIZE); i--; )
3356 for (wl = childs [i]; wl; ) 4081 for (wl = childs [i]; wl; )
3357 { 4082 {
3358 wn = wl->next; 4083 wn = wl->next;
3359 cb (EV_A_ EV_CHILD, wl); 4084 cb (EV_A_ EV_CHILD, wl);
3360 wl = wn; 4085 wl = wn;
3361 } 4086 }
4087#endif
3362/* EV_STAT 0x00001000 /* stat data changed */ 4088/* EV_STAT 0x00001000 /* stat data changed */
3363/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4089/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3364} 4090}
3365#endif 4091#endif
3366 4092
3367#if EV_MULTIPLICITY 4093#if EV_MULTIPLICITY
3368 #include "ev_wrap.h" 4094 #include "ev_wrap.h"
3369#endif 4095#endif
3370 4096
3371#ifdef __cplusplus 4097EV_CPP(})
3372}
3373#endif
3374 4098

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