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Comparing libev/ev.c (file contents):
Revision 1.302 by root, Thu Jul 16 15:08:08 2009 UTC vs.
Revision 1.389 by root, Wed Aug 3 15:31:23 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 /* VC++ 2005 */
517 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
518 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
519 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
520 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
521 #elif defined(_WIN32)
522 #include <WinNT.h>
523 #define ECB_MEMORY_FENCE MemoryBarrier ()
524 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
525 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
526 #endif
527#endif
528
529#ifndef ECB_MEMORY_FENCE
530 #include <pthread.h>
531
532 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
533 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
534 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
535 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
536#endif
537
538#if ECB_GCC_VERSION(3,1)
539 #define ecb_attribute(attrlist) __attribute__(attrlist)
540 #define ecb_is_constant(expr) __builtin_constant_p (expr)
541 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
542 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
543#else
544 #define ecb_attribute(attrlist)
545 #define ecb_is_constant(expr) 0
546 #define ecb_expect(expr,value) (expr)
547 #define ecb_prefetch(addr,rw,locality)
548#endif
549
550#define ecb_noinline ecb_attribute ((__noinline__))
551#define ecb_noreturn ecb_attribute ((__noreturn__))
552#define ecb_unused ecb_attribute ((__unused__))
553#define ecb_const ecb_attribute ((__const__))
554#define ecb_pure ecb_attribute ((__pure__))
555
556#if ECB_GCC_VERSION(4,3)
557 #define ecb_artificial ecb_attribute ((__artificial__))
558 #define ecb_hot ecb_attribute ((__hot__))
559 #define ecb_cold ecb_attribute ((__cold__))
560#else
561 #define ecb_artificial
562 #define ecb_hot
563 #define ecb_cold
564#endif
565
566/* put around conditional expressions if you are very sure that the */
567/* expression is mostly true or mostly false. note that these return */
568/* booleans, not the expression. */
386#define expect_false(expr) expect ((expr) != 0, 0) 569#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 570#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
571/* ecb.h end */
572
573#define expect_false(cond) ecb_expect_false (cond)
574#define expect_true(cond) ecb_expect_true (cond)
575#define noinline ecb_noinline
576
388#define inline_size static inline 577#define inline_size ecb_inline
389 578
390#if EV_MINIMAL 579#if EV_FEATURE_CODE
580# define inline_speed ecb_inline
581#else
391# define inline_speed static noinline 582# define inline_speed static noinline
392#else
393# define inline_speed static inline
394#endif 583#endif
395 584
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 585#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 586
398#if EV_MINPRI == EV_MAXPRI 587#if EV_MINPRI == EV_MAXPRI
… …
411#define ev_active(w) ((W)(w))->active 600#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 601#define ev_at(w) ((WT)(w))->at
413 602
414#if EV_USE_REALTIME 603#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 604/* sig_atomic_t is used to avoid per-thread variables or locking but still */
416/* giving it a reasonably high chance of working on typical architetcures */ 605/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 606static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 607#endif
419 608
420#if EV_USE_MONOTONIC 609#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 610static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 611#endif
423 612
613#ifndef EV_FD_TO_WIN32_HANDLE
614# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
615#endif
616#ifndef EV_WIN32_HANDLE_TO_FD
617# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
618#endif
619#ifndef EV_WIN32_CLOSE_FD
620# define EV_WIN32_CLOSE_FD(fd) close (fd)
621#endif
622
424#ifdef _WIN32 623#ifdef _WIN32
425# include "ev_win32.c" 624# include "ev_win32.c"
426#endif 625#endif
427 626
428/*****************************************************************************/ 627/*****************************************************************************/
429 628
629/* define a suitable floor function (only used by periodics atm) */
630
631#if EV_USE_FLOOR
632# include <math.h>
633# define ev_floor(v) floor (v)
634#else
635
636#include <float.h>
637
638/* a floor() replacement function, should be independent of ev_tstamp type */
639static ev_tstamp noinline
640ev_floor (ev_tstamp v)
641{
642 /* the choice of shift factor is not terribly important */
643#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
644 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
645#else
646 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
647#endif
648
649 /* argument too large for an unsigned long? */
650 if (expect_false (v >= shift))
651 {
652 ev_tstamp f;
653
654 if (v == v - 1.)
655 return v; /* very large number */
656
657 f = shift * ev_floor (v * (1. / shift));
658 return f + ev_floor (v - f);
659 }
660
661 /* special treatment for negative args? */
662 if (expect_false (v < 0.))
663 {
664 ev_tstamp f = -ev_floor (-v);
665
666 return f - (f == v ? 0 : 1);
667 }
668
669 /* fits into an unsigned long */
670 return (unsigned long)v;
671}
672
673#endif
674
675/*****************************************************************************/
676
677#ifdef __linux
678# include <sys/utsname.h>
679#endif
680
681static unsigned int noinline ecb_cold
682ev_linux_version (void)
683{
684#ifdef __linux
685 unsigned int v = 0;
686 struct utsname buf;
687 int i;
688 char *p = buf.release;
689
690 if (uname (&buf))
691 return 0;
692
693 for (i = 3+1; --i; )
694 {
695 unsigned int c = 0;
696
697 for (;;)
698 {
699 if (*p >= '0' && *p <= '9')
700 c = c * 10 + *p++ - '0';
701 else
702 {
703 p += *p == '.';
704 break;
705 }
706 }
707
708 v = (v << 8) | c;
709 }
710
711 return v;
712#else
713 return 0;
714#endif
715}
716
717/*****************************************************************************/
718
719#if EV_AVOID_STDIO
720static void noinline ecb_cold
721ev_printerr (const char *msg)
722{
723 write (STDERR_FILENO, msg, strlen (msg));
724}
725#endif
726
430static void (*syserr_cb)(const char *msg); 727static void (*syserr_cb)(const char *msg);
431 728
432void 729void ecb_cold
433ev_set_syserr_cb (void (*cb)(const char *msg)) 730ev_set_syserr_cb (void (*cb)(const char *msg))
434{ 731{
435 syserr_cb = cb; 732 syserr_cb = cb;
436} 733}
437 734
438static void noinline 735static void noinline ecb_cold
439ev_syserr (const char *msg) 736ev_syserr (const char *msg)
440{ 737{
441 if (!msg) 738 if (!msg)
442 msg = "(libev) system error"; 739 msg = "(libev) system error";
443 740
444 if (syserr_cb) 741 if (syserr_cb)
445 syserr_cb (msg); 742 syserr_cb (msg);
446 else 743 else
447 { 744 {
745#if EV_AVOID_STDIO
746 ev_printerr (msg);
747 ev_printerr (": ");
748 ev_printerr (strerror (errno));
749 ev_printerr ("\n");
750#else
448 perror (msg); 751 perror (msg);
752#endif
449 abort (); 753 abort ();
450 } 754 }
451} 755}
452 756
453static void * 757static void *
454ev_realloc_emul (void *ptr, long size) 758ev_realloc_emul (void *ptr, long size)
455{ 759{
760#if __GLIBC__
761 return realloc (ptr, size);
762#else
456 /* some systems, notably openbsd and darwin, fail to properly 763 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and 764 * implement realloc (x, 0) (as required by both ansi c-89 and
458 * the single unix specification, so work around them here. 765 * the single unix specification, so work around them here.
459 */ 766 */
460 767
461 if (size) 768 if (size)
462 return realloc (ptr, size); 769 return realloc (ptr, size);
463 770
464 free (ptr); 771 free (ptr);
465 return 0; 772 return 0;
773#endif
466} 774}
467 775
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 776static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
469 777
470void 778void ecb_cold
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 779ev_set_allocator (void *(*cb)(void *ptr, long size))
472{ 780{
473 alloc = cb; 781 alloc = cb;
474} 782}
475 783
… …
478{ 786{
479 ptr = alloc (ptr, size); 787 ptr = alloc (ptr, size);
480 788
481 if (!ptr && size) 789 if (!ptr && size)
482 { 790 {
791#if EV_AVOID_STDIO
792 ev_printerr ("(libev) memory allocation failed, aborting.\n");
793#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 794 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
795#endif
484 abort (); 796 abort ();
485 } 797 }
486 798
487 return ptr; 799 return ptr;
488} 800}
… …
504 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 816 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
505 unsigned char unused; 817 unsigned char unused;
506#if EV_USE_EPOLL 818#if EV_USE_EPOLL
507 unsigned int egen; /* generation counter to counter epoll bugs */ 819 unsigned int egen; /* generation counter to counter epoll bugs */
508#endif 820#endif
509#if EV_SELECT_IS_WINSOCKET 821#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
510 SOCKET handle; 822 SOCKET handle;
823#endif
824#if EV_USE_IOCP
825 OVERLAPPED or, ow;
511#endif 826#endif
512} ANFD; 827} ANFD;
513 828
514/* stores the pending event set for a given watcher */ 829/* stores the pending event set for a given watcher */
515typedef struct 830typedef struct
… …
570 885
571 static int ev_default_loop_ptr; 886 static int ev_default_loop_ptr;
572 887
573#endif 888#endif
574 889
575#if EV_MINIMAL < 2 890#if EV_FEATURE_API
576# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) 891# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
577# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) 892# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
578# define EV_INVOKE_PENDING invoke_cb (EV_A) 893# define EV_INVOKE_PENDING invoke_cb (EV_A)
579#else 894#else
580# define EV_RELEASE_CB (void)0 895# define EV_RELEASE_CB (void)0
581# define EV_ACQUIRE_CB (void)0 896# define EV_ACQUIRE_CB (void)0
582# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 897# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
583#endif 898#endif
584 899
585#define EVUNLOOP_RECURSE 0x80 900#define EVBREAK_RECURSE 0x80
586 901
587/*****************************************************************************/ 902/*****************************************************************************/
588 903
589#ifndef EV_HAVE_EV_TIME 904#ifndef EV_HAVE_EV_TIME
590ev_tstamp 905ev_tstamp
… …
634 if (delay > 0.) 949 if (delay > 0.)
635 { 950 {
636#if EV_USE_NANOSLEEP 951#if EV_USE_NANOSLEEP
637 struct timespec ts; 952 struct timespec ts;
638 953
639 ts.tv_sec = (time_t)delay; 954 EV_TS_SET (ts, delay);
640 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
641
642 nanosleep (&ts, 0); 955 nanosleep (&ts, 0);
643#elif defined(_WIN32) 956#elif defined(_WIN32)
644 Sleep ((unsigned long)(delay * 1e3)); 957 Sleep ((unsigned long)(delay * 1e3));
645#else 958#else
646 struct timeval tv; 959 struct timeval tv;
647 960
648 tv.tv_sec = (time_t)delay;
649 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
650
651 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 961 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
652 /* something not guaranteed by newer posix versions, but guaranteed */ 962 /* something not guaranteed by newer posix versions, but guaranteed */
653 /* by older ones */ 963 /* by older ones */
964 EV_TV_SET (tv, delay);
654 select (0, 0, 0, 0, &tv); 965 select (0, 0, 0, 0, &tv);
655#endif 966#endif
656 } 967 }
657} 968}
658 969
659/*****************************************************************************/ 970/*****************************************************************************/
660 971
661#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 972#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
662 973
663/* find a suitable new size for the given array, */ 974/* find a suitable new size for the given array, */
664/* hopefully by rounding to a ncie-to-malloc size */ 975/* hopefully by rounding to a nice-to-malloc size */
665inline_size int 976inline_size int
666array_nextsize (int elem, int cur, int cnt) 977array_nextsize (int elem, int cur, int cnt)
667{ 978{
668 int ncur = cur + 1; 979 int ncur = cur + 1;
669 980
… …
681 } 992 }
682 993
683 return ncur; 994 return ncur;
684} 995}
685 996
686static noinline void * 997static void * noinline ecb_cold
687array_realloc (int elem, void *base, int *cur, int cnt) 998array_realloc (int elem, void *base, int *cur, int cnt)
688{ 999{
689 *cur = array_nextsize (elem, *cur, cnt); 1000 *cur = array_nextsize (elem, *cur, cnt);
690 return ev_realloc (base, elem * *cur); 1001 return ev_realloc (base, elem * *cur);
691} 1002}
… …
694 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1005 memset ((void *)(base), 0, sizeof (*(base)) * (count))
695 1006
696#define array_needsize(type,base,cur,cnt,init) \ 1007#define array_needsize(type,base,cur,cnt,init) \
697 if (expect_false ((cnt) > (cur))) \ 1008 if (expect_false ((cnt) > (cur))) \
698 { \ 1009 { \
699 int ocur_ = (cur); \ 1010 int ecb_unused ocur_ = (cur); \
700 (base) = (type *)array_realloc \ 1011 (base) = (type *)array_realloc \
701 (sizeof (type), (base), &(cur), (cnt)); \ 1012 (sizeof (type), (base), &(cur), (cnt)); \
702 init ((base) + (ocur_), (cur) - ocur_); \ 1013 init ((base) + (ocur_), (cur) - ocur_); \
703 } 1014 }
704 1015
… …
765} 1076}
766 1077
767/*****************************************************************************/ 1078/*****************************************************************************/
768 1079
769inline_speed void 1080inline_speed void
770fd_event_nc (EV_P_ int fd, int revents) 1081fd_event_nocheck (EV_P_ int fd, int revents)
771{ 1082{
772 ANFD *anfd = anfds + fd; 1083 ANFD *anfd = anfds + fd;
773 ev_io *w; 1084 ev_io *w;
774 1085
775 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1086 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
787fd_event (EV_P_ int fd, int revents) 1098fd_event (EV_P_ int fd, int revents)
788{ 1099{
789 ANFD *anfd = anfds + fd; 1100 ANFD *anfd = anfds + fd;
790 1101
791 if (expect_true (!anfd->reify)) 1102 if (expect_true (!anfd->reify))
792 fd_event_nc (EV_A_ fd, revents); 1103 fd_event_nocheck (EV_A_ fd, revents);
793} 1104}
794 1105
795void 1106void
796ev_feed_fd_event (EV_P_ int fd, int revents) 1107ev_feed_fd_event (EV_P_ int fd, int revents)
797{ 1108{
798 if (fd >= 0 && fd < anfdmax) 1109 if (fd >= 0 && fd < anfdmax)
799 fd_event_nc (EV_A_ fd, revents); 1110 fd_event_nocheck (EV_A_ fd, revents);
800} 1111}
801 1112
802/* make sure the external fd watch events are in-sync */ 1113/* make sure the external fd watch events are in-sync */
803/* with the kernel/libev internal state */ 1114/* with the kernel/libev internal state */
804inline_size void 1115inline_size void
805fd_reify (EV_P) 1116fd_reify (EV_P)
806{ 1117{
807 int i; 1118 int i;
808 1119
1120#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1121 for (i = 0; i < fdchangecnt; ++i)
1122 {
1123 int fd = fdchanges [i];
1124 ANFD *anfd = anfds + fd;
1125
1126 if (anfd->reify & EV__IOFDSET && anfd->head)
1127 {
1128 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1129
1130 if (handle != anfd->handle)
1131 {
1132 unsigned long arg;
1133
1134 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1135
1136 /* handle changed, but fd didn't - we need to do it in two steps */
1137 backend_modify (EV_A_ fd, anfd->events, 0);
1138 anfd->events = 0;
1139 anfd->handle = handle;
1140 }
1141 }
1142 }
1143#endif
1144
809 for (i = 0; i < fdchangecnt; ++i) 1145 for (i = 0; i < fdchangecnt; ++i)
810 { 1146 {
811 int fd = fdchanges [i]; 1147 int fd = fdchanges [i];
812 ANFD *anfd = anfds + fd; 1148 ANFD *anfd = anfds + fd;
813 ev_io *w; 1149 ev_io *w;
814 1150
815 unsigned char events = 0; 1151 unsigned char o_events = anfd->events;
1152 unsigned char o_reify = anfd->reify;
816 1153
817 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1154 anfd->reify = 0;
818 events |= (unsigned char)w->events;
819 1155
820#if EV_SELECT_IS_WINSOCKET 1156 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
821 if (events)
822 { 1157 {
823 unsigned long arg; 1158 anfd->events = 0;
824 #ifdef EV_FD_TO_WIN32_HANDLE 1159
825 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1160 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
826 #else 1161 anfd->events |= (unsigned char)w->events;
827 anfd->handle = _get_osfhandle (fd); 1162
828 #endif 1163 if (o_events != anfd->events)
829 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1164 o_reify = EV__IOFDSET; /* actually |= */
830 } 1165 }
831#endif
832 1166
833 { 1167 if (o_reify & EV__IOFDSET)
834 unsigned char o_events = anfd->events;
835 unsigned char o_reify = anfd->reify;
836
837 anfd->reify = 0;
838 anfd->events = events;
839
840 if (o_events != events || o_reify & EV__IOFDSET)
841 backend_modify (EV_A_ fd, o_events, events); 1168 backend_modify (EV_A_ fd, o_events, anfd->events);
842 }
843 } 1169 }
844 1170
845 fdchangecnt = 0; 1171 fdchangecnt = 0;
846} 1172}
847 1173
… …
859 fdchanges [fdchangecnt - 1] = fd; 1185 fdchanges [fdchangecnt - 1] = fd;
860 } 1186 }
861} 1187}
862 1188
863/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1189/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
864inline_speed void 1190inline_speed void ecb_cold
865fd_kill (EV_P_ int fd) 1191fd_kill (EV_P_ int fd)
866{ 1192{
867 ev_io *w; 1193 ev_io *w;
868 1194
869 while ((w = (ev_io *)anfds [fd].head)) 1195 while ((w = (ev_io *)anfds [fd].head))
… …
871 ev_io_stop (EV_A_ w); 1197 ev_io_stop (EV_A_ w);
872 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1198 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
873 } 1199 }
874} 1200}
875 1201
876/* check whether the given fd is atcually valid, for error recovery */ 1202/* check whether the given fd is actually valid, for error recovery */
877inline_size int 1203inline_size int ecb_cold
878fd_valid (int fd) 1204fd_valid (int fd)
879{ 1205{
880#ifdef _WIN32 1206#ifdef _WIN32
881 return _get_osfhandle (fd) != -1; 1207 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
882#else 1208#else
883 return fcntl (fd, F_GETFD) != -1; 1209 return fcntl (fd, F_GETFD) != -1;
884#endif 1210#endif
885} 1211}
886 1212
887/* called on EBADF to verify fds */ 1213/* called on EBADF to verify fds */
888static void noinline 1214static void noinline ecb_cold
889fd_ebadf (EV_P) 1215fd_ebadf (EV_P)
890{ 1216{
891 int fd; 1217 int fd;
892 1218
893 for (fd = 0; fd < anfdmax; ++fd) 1219 for (fd = 0; fd < anfdmax; ++fd)
… …
895 if (!fd_valid (fd) && errno == EBADF) 1221 if (!fd_valid (fd) && errno == EBADF)
896 fd_kill (EV_A_ fd); 1222 fd_kill (EV_A_ fd);
897} 1223}
898 1224
899/* called on ENOMEM in select/poll to kill some fds and retry */ 1225/* called on ENOMEM in select/poll to kill some fds and retry */
900static void noinline 1226static void noinline ecb_cold
901fd_enomem (EV_P) 1227fd_enomem (EV_P)
902{ 1228{
903 int fd; 1229 int fd;
904 1230
905 for (fd = anfdmax; fd--; ) 1231 for (fd = anfdmax; fd--; )
906 if (anfds [fd].events) 1232 if (anfds [fd].events)
907 { 1233 {
908 fd_kill (EV_A_ fd); 1234 fd_kill (EV_A_ fd);
909 return; 1235 break;
910 } 1236 }
911} 1237}
912 1238
913/* usually called after fork if backend needs to re-arm all fds from scratch */ 1239/* usually called after fork if backend needs to re-arm all fds from scratch */
914static void noinline 1240static void noinline
… …
923 anfds [fd].emask = 0; 1249 anfds [fd].emask = 0;
924 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); 1250 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
925 } 1251 }
926} 1252}
927 1253
1254/* used to prepare libev internal fd's */
1255/* this is not fork-safe */
1256inline_speed void
1257fd_intern (int fd)
1258{
1259#ifdef _WIN32
1260 unsigned long arg = 1;
1261 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1262#else
1263 fcntl (fd, F_SETFD, FD_CLOEXEC);
1264 fcntl (fd, F_SETFL, O_NONBLOCK);
1265#endif
1266}
1267
928/*****************************************************************************/ 1268/*****************************************************************************/
929 1269
930/* 1270/*
931 * the heap functions want a real array index. array index 0 uis guaranteed to not 1271 * the heap functions want a real array index. array index 0 is guaranteed to not
932 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1272 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
933 * the branching factor of the d-tree. 1273 * the branching factor of the d-tree.
934 */ 1274 */
935 1275
936/* 1276/*
… …
1004 1344
1005 for (;;) 1345 for (;;)
1006 { 1346 {
1007 int c = k << 1; 1347 int c = k << 1;
1008 1348
1009 if (c > N + HEAP0 - 1) 1349 if (c >= N + HEAP0)
1010 break; 1350 break;
1011 1351
1012 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1352 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1013 ? 1 : 0; 1353 ? 1 : 0;
1014 1354
… …
1050 1390
1051/* move an element suitably so it is in a correct place */ 1391/* move an element suitably so it is in a correct place */
1052inline_size void 1392inline_size void
1053adjustheap (ANHE *heap, int N, int k) 1393adjustheap (ANHE *heap, int N, int k)
1054{ 1394{
1055 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1395 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1056 upheap (heap, k); 1396 upheap (heap, k);
1057 else 1397 else
1058 downheap (heap, N, k); 1398 downheap (heap, N, k);
1059} 1399}
1060 1400
… …
1073/*****************************************************************************/ 1413/*****************************************************************************/
1074 1414
1075/* associate signal watchers to a signal signal */ 1415/* associate signal watchers to a signal signal */
1076typedef struct 1416typedef struct
1077{ 1417{
1418 EV_ATOMIC_T pending;
1419#if EV_MULTIPLICITY
1420 EV_P;
1421#endif
1078 WL head; 1422 WL head;
1079 EV_ATOMIC_T gotsig;
1080} ANSIG; 1423} ANSIG;
1081 1424
1082static ANSIG *signals; 1425static ANSIG signals [EV_NSIG - 1];
1083static int signalmax;
1084
1085static EV_ATOMIC_T gotsig;
1086 1426
1087/*****************************************************************************/ 1427/*****************************************************************************/
1088 1428
1089/* used to prepare libev internal fd's */ 1429#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1090/* this is not fork-safe */
1091inline_speed void
1092fd_intern (int fd)
1093{
1094#ifdef _WIN32
1095 unsigned long arg = 1;
1096 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1097#else
1098 fcntl (fd, F_SETFD, FD_CLOEXEC);
1099 fcntl (fd, F_SETFL, O_NONBLOCK);
1100#endif
1101}
1102 1430
1103static void noinline 1431static void noinline ecb_cold
1104evpipe_init (EV_P) 1432evpipe_init (EV_P)
1105{ 1433{
1106 if (!ev_is_active (&pipe_w)) 1434 if (!ev_is_active (&pipe_w))
1107 { 1435 {
1108#if EV_USE_EVENTFD 1436# if EV_USE_EVENTFD
1437 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1438 if (evfd < 0 && errno == EINVAL)
1109 if ((evfd = eventfd (0, 0)) >= 0) 1439 evfd = eventfd (0, 0);
1440
1441 if (evfd >= 0)
1110 { 1442 {
1111 evpipe [0] = -1; 1443 evpipe [0] = -1;
1112 fd_intern (evfd); 1444 fd_intern (evfd); /* doing it twice doesn't hurt */
1113 ev_io_set (&pipe_w, evfd, EV_READ); 1445 ev_io_set (&pipe_w, evfd, EV_READ);
1114 } 1446 }
1115 else 1447 else
1116#endif 1448# endif
1117 { 1449 {
1118 while (pipe (evpipe)) 1450 while (pipe (evpipe))
1119 ev_syserr ("(libev) error creating signal/async pipe"); 1451 ev_syserr ("(libev) error creating signal/async pipe");
1120 1452
1121 fd_intern (evpipe [0]); 1453 fd_intern (evpipe [0]);
… …
1126 ev_io_start (EV_A_ &pipe_w); 1458 ev_io_start (EV_A_ &pipe_w);
1127 ev_unref (EV_A); /* watcher should not keep loop alive */ 1459 ev_unref (EV_A); /* watcher should not keep loop alive */
1128 } 1460 }
1129} 1461}
1130 1462
1131inline_size void 1463inline_speed void
1132evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1464evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1133{ 1465{
1134 if (!*flag) 1466 if (expect_true (*flag))
1467 return;
1468
1469 *flag = 1;
1470
1471 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1472
1473 pipe_write_skipped = 1;
1474
1475 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1476
1477 if (pipe_write_wanted)
1135 { 1478 {
1479 int old_errno;
1480
1481 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1482
1136 int old_errno = errno; /* save errno because write might clobber it */ 1483 old_errno = errno; /* save errno because write will clobber it */
1137
1138 *flag = 1;
1139 1484
1140#if EV_USE_EVENTFD 1485#if EV_USE_EVENTFD
1141 if (evfd >= 0) 1486 if (evfd >= 0)
1142 { 1487 {
1143 uint64_t counter = 1; 1488 uint64_t counter = 1;
1144 write (evfd, &counter, sizeof (uint64_t)); 1489 write (evfd, &counter, sizeof (uint64_t));
1145 } 1490 }
1146 else 1491 else
1147#endif 1492#endif
1493 {
1494 /* win32 people keep sending patches that change this write() to send() */
1495 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1496 /* so when you think this write should be a send instead, please find out */
1497 /* where your send() is from - it's definitely not the microsoft send, and */
1498 /* tell me. thank you. */
1148 write (evpipe [1], &old_errno, 1); 1499 write (evpipe [1], &(evpipe [1]), 1);
1500 }
1149 1501
1150 errno = old_errno; 1502 errno = old_errno;
1151 } 1503 }
1152} 1504}
1153 1505
1154/* called whenever the libev signal pipe */ 1506/* called whenever the libev signal pipe */
1155/* got some events (signal, async) */ 1507/* got some events (signal, async) */
1156static void 1508static void
1157pipecb (EV_P_ ev_io *iow, int revents) 1509pipecb (EV_P_ ev_io *iow, int revents)
1158{ 1510{
1511 int i;
1512
1513 if (revents & EV_READ)
1514 {
1159#if EV_USE_EVENTFD 1515#if EV_USE_EVENTFD
1160 if (evfd >= 0) 1516 if (evfd >= 0)
1161 { 1517 {
1162 uint64_t counter; 1518 uint64_t counter;
1163 read (evfd, &counter, sizeof (uint64_t)); 1519 read (evfd, &counter, sizeof (uint64_t));
1164 } 1520 }
1165 else 1521 else
1166#endif 1522#endif
1167 { 1523 {
1168 char dummy; 1524 char dummy;
1525 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1169 read (evpipe [0], &dummy, 1); 1526 read (evpipe [0], &dummy, 1);
1527 }
1528 }
1529
1530 pipe_write_skipped = 0;
1531
1532#if EV_SIGNAL_ENABLE
1533 if (sig_pending)
1170 } 1534 {
1535 sig_pending = 0;
1171 1536
1172 if (gotsig && ev_is_default_loop (EV_A)) 1537 for (i = EV_NSIG - 1; i--; )
1173 { 1538 if (expect_false (signals [i].pending))
1174 int signum;
1175 gotsig = 0;
1176
1177 for (signum = signalmax; signum--; )
1178 if (signals [signum].gotsig)
1179 ev_feed_signal_event (EV_A_ signum + 1); 1539 ev_feed_signal_event (EV_A_ i + 1);
1180 } 1540 }
1541#endif
1181 1542
1182#if EV_ASYNC_ENABLE 1543#if EV_ASYNC_ENABLE
1183 if (gotasync) 1544 if (async_pending)
1184 { 1545 {
1185 int i; 1546 async_pending = 0;
1186 gotasync = 0;
1187 1547
1188 for (i = asynccnt; i--; ) 1548 for (i = asynccnt; i--; )
1189 if (asyncs [i]->sent) 1549 if (asyncs [i]->sent)
1190 { 1550 {
1191 asyncs [i]->sent = 0; 1551 asyncs [i]->sent = 0;
… …
1195#endif 1555#endif
1196} 1556}
1197 1557
1198/*****************************************************************************/ 1558/*****************************************************************************/
1199 1559
1560void
1561ev_feed_signal (int signum)
1562{
1563#if EV_MULTIPLICITY
1564 EV_P = signals [signum - 1].loop;
1565
1566 if (!EV_A)
1567 return;
1568#endif
1569
1570 if (!ev_active (&pipe_w))
1571 return;
1572
1573 signals [signum - 1].pending = 1;
1574 evpipe_write (EV_A_ &sig_pending);
1575}
1576
1200static void 1577static void
1201ev_sighandler (int signum) 1578ev_sighandler (int signum)
1202{ 1579{
1203#if EV_MULTIPLICITY
1204 struct ev_loop *loop = &default_loop_struct;
1205#endif
1206
1207#if _WIN32 1580#ifdef _WIN32
1208 signal (signum, ev_sighandler); 1581 signal (signum, ev_sighandler);
1209#endif 1582#endif
1210 1583
1211 signals [signum - 1].gotsig = 1; 1584 ev_feed_signal (signum);
1212 evpipe_write (EV_A_ &gotsig);
1213} 1585}
1214 1586
1215void noinline 1587void noinline
1216ev_feed_signal_event (EV_P_ int signum) 1588ev_feed_signal_event (EV_P_ int signum)
1217{ 1589{
1218 WL w; 1590 WL w;
1219 1591
1592 if (expect_false (signum <= 0 || signum > EV_NSIG))
1593 return;
1594
1595 --signum;
1596
1220#if EV_MULTIPLICITY 1597#if EV_MULTIPLICITY
1221 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1598 /* it is permissible to try to feed a signal to the wrong loop */
1222#endif 1599 /* or, likely more useful, feeding a signal nobody is waiting for */
1223 1600
1224 --signum; 1601 if (expect_false (signals [signum].loop != EV_A))
1225
1226 if (signum < 0 || signum >= signalmax)
1227 return; 1602 return;
1603#endif
1228 1604
1229 signals [signum].gotsig = 0; 1605 signals [signum].pending = 0;
1230 1606
1231 for (w = signals [signum].head; w; w = w->next) 1607 for (w = signals [signum].head; w; w = w->next)
1232 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1608 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1233} 1609}
1234 1610
1611#if EV_USE_SIGNALFD
1612static void
1613sigfdcb (EV_P_ ev_io *iow, int revents)
1614{
1615 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1616
1617 for (;;)
1618 {
1619 ssize_t res = read (sigfd, si, sizeof (si));
1620
1621 /* not ISO-C, as res might be -1, but works with SuS */
1622 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1623 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1624
1625 if (res < (ssize_t)sizeof (si))
1626 break;
1627 }
1628}
1629#endif
1630
1631#endif
1632
1235/*****************************************************************************/ 1633/*****************************************************************************/
1236 1634
1635#if EV_CHILD_ENABLE
1237static WL childs [EV_PID_HASHSIZE]; 1636static WL childs [EV_PID_HASHSIZE];
1238
1239#ifndef _WIN32
1240 1637
1241static ev_signal childev; 1638static ev_signal childev;
1242 1639
1243#ifndef WIFCONTINUED 1640#ifndef WIFCONTINUED
1244# define WIFCONTINUED(status) 0 1641# define WIFCONTINUED(status) 0
… …
1249child_reap (EV_P_ int chain, int pid, int status) 1646child_reap (EV_P_ int chain, int pid, int status)
1250{ 1647{
1251 ev_child *w; 1648 ev_child *w;
1252 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1649 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1253 1650
1254 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1651 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1255 { 1652 {
1256 if ((w->pid == pid || !w->pid) 1653 if ((w->pid == pid || !w->pid)
1257 && (!traced || (w->flags & 1))) 1654 && (!traced || (w->flags & 1)))
1258 { 1655 {
1259 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1656 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1284 /* make sure we are called again until all children have been reaped */ 1681 /* make sure we are called again until all children have been reaped */
1285 /* we need to do it this way so that the callback gets called before we continue */ 1682 /* we need to do it this way so that the callback gets called before we continue */
1286 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1683 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1287 1684
1288 child_reap (EV_A_ pid, pid, status); 1685 child_reap (EV_A_ pid, pid, status);
1289 if (EV_PID_HASHSIZE > 1) 1686 if ((EV_PID_HASHSIZE) > 1)
1290 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1687 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1291} 1688}
1292 1689
1293#endif 1690#endif
1294 1691
1295/*****************************************************************************/ 1692/*****************************************************************************/
1296 1693
1694#if EV_USE_IOCP
1695# include "ev_iocp.c"
1696#endif
1297#if EV_USE_PORT 1697#if EV_USE_PORT
1298# include "ev_port.c" 1698# include "ev_port.c"
1299#endif 1699#endif
1300#if EV_USE_KQUEUE 1700#if EV_USE_KQUEUE
1301# include "ev_kqueue.c" 1701# include "ev_kqueue.c"
… …
1308#endif 1708#endif
1309#if EV_USE_SELECT 1709#if EV_USE_SELECT
1310# include "ev_select.c" 1710# include "ev_select.c"
1311#endif 1711#endif
1312 1712
1313int 1713int ecb_cold
1314ev_version_major (void) 1714ev_version_major (void)
1315{ 1715{
1316 return EV_VERSION_MAJOR; 1716 return EV_VERSION_MAJOR;
1317} 1717}
1318 1718
1319int 1719int ecb_cold
1320ev_version_minor (void) 1720ev_version_minor (void)
1321{ 1721{
1322 return EV_VERSION_MINOR; 1722 return EV_VERSION_MINOR;
1323} 1723}
1324 1724
1325/* return true if we are running with elevated privileges and should ignore env variables */ 1725/* return true if we are running with elevated privileges and should ignore env variables */
1326int inline_size 1726int inline_size ecb_cold
1327enable_secure (void) 1727enable_secure (void)
1328{ 1728{
1329#ifdef _WIN32 1729#ifdef _WIN32
1330 return 0; 1730 return 0;
1331#else 1731#else
1332 return getuid () != geteuid () 1732 return getuid () != geteuid ()
1333 || getgid () != getegid (); 1733 || getgid () != getegid ();
1334#endif 1734#endif
1335} 1735}
1336 1736
1337unsigned int 1737unsigned int ecb_cold
1338ev_supported_backends (void) 1738ev_supported_backends (void)
1339{ 1739{
1340 unsigned int flags = 0; 1740 unsigned int flags = 0;
1341 1741
1342 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1742 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1346 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1746 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1347 1747
1348 return flags; 1748 return flags;
1349} 1749}
1350 1750
1351unsigned int 1751unsigned int ecb_cold
1352ev_recommended_backends (void) 1752ev_recommended_backends (void)
1353{ 1753{
1354 unsigned int flags = ev_supported_backends (); 1754 unsigned int flags = ev_supported_backends ();
1355 1755
1356#ifndef __NetBSD__ 1756#ifndef __NetBSD__
… …
1361#ifdef __APPLE__ 1761#ifdef __APPLE__
1362 /* only select works correctly on that "unix-certified" platform */ 1762 /* only select works correctly on that "unix-certified" platform */
1363 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1763 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1364 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1764 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1365#endif 1765#endif
1766#ifdef __FreeBSD__
1767 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1768#endif
1366 1769
1367 return flags; 1770 return flags;
1368} 1771}
1369 1772
1370unsigned int 1773unsigned int ecb_cold
1371ev_embeddable_backends (void) 1774ev_embeddable_backends (void)
1372{ 1775{
1373 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1776 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1374 1777
1375 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1778 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1376 /* please fix it and tell me how to detect the fix */ 1779 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1377 flags &= ~EVBACKEND_EPOLL; 1780 flags &= ~EVBACKEND_EPOLL;
1378 1781
1379 return flags; 1782 return flags;
1380} 1783}
1381 1784
1382unsigned int 1785unsigned int
1383ev_backend (EV_P) 1786ev_backend (EV_P)
1384{ 1787{
1385 return backend; 1788 return backend;
1386} 1789}
1387 1790
1388#if EV_MINIMAL < 2 1791#if EV_FEATURE_API
1389unsigned int 1792unsigned int
1390ev_loop_count (EV_P) 1793ev_iteration (EV_P)
1391{ 1794{
1392 return loop_count; 1795 return loop_count;
1393} 1796}
1394 1797
1395unsigned int 1798unsigned int
1396ev_loop_depth (EV_P) 1799ev_depth (EV_P)
1397{ 1800{
1398 return loop_depth; 1801 return loop_depth;
1399} 1802}
1400 1803
1401void 1804void
… …
1420ev_userdata (EV_P) 1823ev_userdata (EV_P)
1421{ 1824{
1422 return userdata; 1825 return userdata;
1423} 1826}
1424 1827
1828void
1425void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 1829ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1426{ 1830{
1427 invoke_cb = invoke_pending_cb; 1831 invoke_cb = invoke_pending_cb;
1428} 1832}
1429 1833
1834void
1430void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 1835ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1431{ 1836{
1432 release_cb = release; 1837 release_cb = release;
1433 acquire_cb = acquire; 1838 acquire_cb = acquire;
1434} 1839}
1435#endif 1840#endif
1436 1841
1437/* initialise a loop structure, must be zero-initialised */ 1842/* initialise a loop structure, must be zero-initialised */
1438static void noinline 1843static void noinline ecb_cold
1439loop_init (EV_P_ unsigned int flags) 1844loop_init (EV_P_ unsigned int flags)
1440{ 1845{
1441 if (!backend) 1846 if (!backend)
1442 { 1847 {
1848 origflags = flags;
1849
1443#if EV_USE_REALTIME 1850#if EV_USE_REALTIME
1444 if (!have_realtime) 1851 if (!have_realtime)
1445 { 1852 {
1446 struct timespec ts; 1853 struct timespec ts;
1447 1854
… …
1458 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1865 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1459 have_monotonic = 1; 1866 have_monotonic = 1;
1460 } 1867 }
1461#endif 1868#endif
1462 1869
1463 ev_rt_now = ev_time ();
1464 mn_now = get_clock ();
1465 now_floor = mn_now;
1466 rtmn_diff = ev_rt_now - mn_now;
1467#if EV_MINIMAL < 2
1468 invoke_cb = ev_invoke_pending;
1469#endif
1470
1471 io_blocktime = 0.;
1472 timeout_blocktime = 0.;
1473 backend = 0;
1474 backend_fd = -1;
1475 gotasync = 0;
1476#if EV_USE_INOTIFY
1477 fs_fd = -2;
1478#endif
1479
1480 /* pid check not overridable via env */ 1870 /* pid check not overridable via env */
1481#ifndef _WIN32 1871#ifndef _WIN32
1482 if (flags & EVFLAG_FORKCHECK) 1872 if (flags & EVFLAG_FORKCHECK)
1483 curpid = getpid (); 1873 curpid = getpid ();
1484#endif 1874#endif
… …
1486 if (!(flags & EVFLAG_NOENV) 1876 if (!(flags & EVFLAG_NOENV)
1487 && !enable_secure () 1877 && !enable_secure ()
1488 && getenv ("LIBEV_FLAGS")) 1878 && getenv ("LIBEV_FLAGS"))
1489 flags = atoi (getenv ("LIBEV_FLAGS")); 1879 flags = atoi (getenv ("LIBEV_FLAGS"));
1490 1880
1491 if (!(flags & 0x0000ffffU)) 1881 ev_rt_now = ev_time ();
1882 mn_now = get_clock ();
1883 now_floor = mn_now;
1884 rtmn_diff = ev_rt_now - mn_now;
1885#if EV_FEATURE_API
1886 invoke_cb = ev_invoke_pending;
1887#endif
1888
1889 io_blocktime = 0.;
1890 timeout_blocktime = 0.;
1891 backend = 0;
1892 backend_fd = -1;
1893 sig_pending = 0;
1894#if EV_ASYNC_ENABLE
1895 async_pending = 0;
1896#endif
1897 pipe_write_skipped = 0;
1898 pipe_write_wanted = 0;
1899#if EV_USE_INOTIFY
1900 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1901#endif
1902#if EV_USE_SIGNALFD
1903 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1904#endif
1905
1906 if (!(flags & EVBACKEND_MASK))
1492 flags |= ev_recommended_backends (); 1907 flags |= ev_recommended_backends ();
1493 1908
1909#if EV_USE_IOCP
1910 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1911#endif
1494#if EV_USE_PORT 1912#if EV_USE_PORT
1495 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1913 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1496#endif 1914#endif
1497#if EV_USE_KQUEUE 1915#if EV_USE_KQUEUE
1498 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1916 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1507 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1925 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1508#endif 1926#endif
1509 1927
1510 ev_prepare_init (&pending_w, pendingcb); 1928 ev_prepare_init (&pending_w, pendingcb);
1511 1929
1930#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1512 ev_init (&pipe_w, pipecb); 1931 ev_init (&pipe_w, pipecb);
1513 ev_set_priority (&pipe_w, EV_MAXPRI); 1932 ev_set_priority (&pipe_w, EV_MAXPRI);
1933#endif
1514 } 1934 }
1515} 1935}
1516 1936
1517/* free up a loop structure */ 1937/* free up a loop structure */
1518static void noinline 1938void ecb_cold
1519loop_destroy (EV_P) 1939ev_loop_destroy (EV_P)
1520{ 1940{
1521 int i; 1941 int i;
1522 1942
1943#if EV_MULTIPLICITY
1944 /* mimic free (0) */
1945 if (!EV_A)
1946 return;
1947#endif
1948
1949#if EV_CLEANUP_ENABLE
1950 /* queue cleanup watchers (and execute them) */
1951 if (expect_false (cleanupcnt))
1952 {
1953 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1954 EV_INVOKE_PENDING;
1955 }
1956#endif
1957
1958#if EV_CHILD_ENABLE
1959 if (ev_is_active (&childev))
1960 {
1961 ev_ref (EV_A); /* child watcher */
1962 ev_signal_stop (EV_A_ &childev);
1963 }
1964#endif
1965
1523 if (ev_is_active (&pipe_w)) 1966 if (ev_is_active (&pipe_w))
1524 { 1967 {
1525 ev_ref (EV_A); /* signal watcher */ 1968 /*ev_ref (EV_A);*/
1526 ev_io_stop (EV_A_ &pipe_w); 1969 /*ev_io_stop (EV_A_ &pipe_w);*/
1527 1970
1528#if EV_USE_EVENTFD 1971#if EV_USE_EVENTFD
1529 if (evfd >= 0) 1972 if (evfd >= 0)
1530 close (evfd); 1973 close (evfd);
1531#endif 1974#endif
1532 1975
1533 if (evpipe [0] >= 0) 1976 if (evpipe [0] >= 0)
1534 { 1977 {
1535 close (evpipe [0]); 1978 EV_WIN32_CLOSE_FD (evpipe [0]);
1536 close (evpipe [1]); 1979 EV_WIN32_CLOSE_FD (evpipe [1]);
1537 } 1980 }
1538 } 1981 }
1982
1983#if EV_USE_SIGNALFD
1984 if (ev_is_active (&sigfd_w))
1985 close (sigfd);
1986#endif
1539 1987
1540#if EV_USE_INOTIFY 1988#if EV_USE_INOTIFY
1541 if (fs_fd >= 0) 1989 if (fs_fd >= 0)
1542 close (fs_fd); 1990 close (fs_fd);
1543#endif 1991#endif
1544 1992
1545 if (backend_fd >= 0) 1993 if (backend_fd >= 0)
1546 close (backend_fd); 1994 close (backend_fd);
1547 1995
1996#if EV_USE_IOCP
1997 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1998#endif
1548#if EV_USE_PORT 1999#if EV_USE_PORT
1549 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2000 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1550#endif 2001#endif
1551#if EV_USE_KQUEUE 2002#if EV_USE_KQUEUE
1552 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2003 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1567#if EV_IDLE_ENABLE 2018#if EV_IDLE_ENABLE
1568 array_free (idle, [i]); 2019 array_free (idle, [i]);
1569#endif 2020#endif
1570 } 2021 }
1571 2022
1572 ev_free (anfds); anfdmax = 0; 2023 ev_free (anfds); anfds = 0; anfdmax = 0;
1573 2024
1574 /* have to use the microsoft-never-gets-it-right macro */ 2025 /* have to use the microsoft-never-gets-it-right macro */
1575 array_free (rfeed, EMPTY); 2026 array_free (rfeed, EMPTY);
1576 array_free (fdchange, EMPTY); 2027 array_free (fdchange, EMPTY);
1577 array_free (timer, EMPTY); 2028 array_free (timer, EMPTY);
… …
1579 array_free (periodic, EMPTY); 2030 array_free (periodic, EMPTY);
1580#endif 2031#endif
1581#if EV_FORK_ENABLE 2032#if EV_FORK_ENABLE
1582 array_free (fork, EMPTY); 2033 array_free (fork, EMPTY);
1583#endif 2034#endif
2035#if EV_CLEANUP_ENABLE
2036 array_free (cleanup, EMPTY);
2037#endif
1584 array_free (prepare, EMPTY); 2038 array_free (prepare, EMPTY);
1585 array_free (check, EMPTY); 2039 array_free (check, EMPTY);
1586#if EV_ASYNC_ENABLE 2040#if EV_ASYNC_ENABLE
1587 array_free (async, EMPTY); 2041 array_free (async, EMPTY);
1588#endif 2042#endif
1589 2043
1590 backend = 0; 2044 backend = 0;
2045
2046#if EV_MULTIPLICITY
2047 if (ev_is_default_loop (EV_A))
2048#endif
2049 ev_default_loop_ptr = 0;
2050#if EV_MULTIPLICITY
2051 else
2052 ev_free (EV_A);
2053#endif
1591} 2054}
1592 2055
1593#if EV_USE_INOTIFY 2056#if EV_USE_INOTIFY
1594inline_size void infy_fork (EV_P); 2057inline_size void infy_fork (EV_P);
1595#endif 2058#endif
… …
1610 infy_fork (EV_A); 2073 infy_fork (EV_A);
1611#endif 2074#endif
1612 2075
1613 if (ev_is_active (&pipe_w)) 2076 if (ev_is_active (&pipe_w))
1614 { 2077 {
1615 /* this "locks" the handlers against writing to the pipe */ 2078 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1616 /* while we modify the fd vars */
1617 gotsig = 1;
1618#if EV_ASYNC_ENABLE
1619 gotasync = 1;
1620#endif
1621 2079
1622 ev_ref (EV_A); 2080 ev_ref (EV_A);
1623 ev_io_stop (EV_A_ &pipe_w); 2081 ev_io_stop (EV_A_ &pipe_w);
1624 2082
1625#if EV_USE_EVENTFD 2083#if EV_USE_EVENTFD
… …
1627 close (evfd); 2085 close (evfd);
1628#endif 2086#endif
1629 2087
1630 if (evpipe [0] >= 0) 2088 if (evpipe [0] >= 0)
1631 { 2089 {
1632 close (evpipe [0]); 2090 EV_WIN32_CLOSE_FD (evpipe [0]);
1633 close (evpipe [1]); 2091 EV_WIN32_CLOSE_FD (evpipe [1]);
1634 } 2092 }
1635 2093
2094#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1636 evpipe_init (EV_A); 2095 evpipe_init (EV_A);
1637 /* now iterate over everything, in case we missed something */ 2096 /* now iterate over everything, in case we missed something */
1638 pipecb (EV_A_ &pipe_w, EV_READ); 2097 pipecb (EV_A_ &pipe_w, EV_READ);
2098#endif
1639 } 2099 }
1640 2100
1641 postfork = 0; 2101 postfork = 0;
1642} 2102}
1643 2103
1644#if EV_MULTIPLICITY 2104#if EV_MULTIPLICITY
1645 2105
1646struct ev_loop * 2106struct ev_loop * ecb_cold
1647ev_loop_new (unsigned int flags) 2107ev_loop_new (unsigned int flags)
1648{ 2108{
1649 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2109 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1650 2110
1651 memset (loop, 0, sizeof (struct ev_loop)); 2111 memset (EV_A, 0, sizeof (struct ev_loop));
1652
1653 loop_init (EV_A_ flags); 2112 loop_init (EV_A_ flags);
1654 2113
1655 if (ev_backend (EV_A)) 2114 if (ev_backend (EV_A))
1656 return loop; 2115 return EV_A;
1657 2116
2117 ev_free (EV_A);
1658 return 0; 2118 return 0;
1659} 2119}
1660 2120
1661void
1662ev_loop_destroy (EV_P)
1663{
1664 loop_destroy (EV_A);
1665 ev_free (loop);
1666}
1667
1668void
1669ev_loop_fork (EV_P)
1670{
1671 postfork = 1; /* must be in line with ev_default_fork */
1672}
1673#endif /* multiplicity */ 2121#endif /* multiplicity */
1674 2122
1675#if EV_VERIFY 2123#if EV_VERIFY
1676static void noinline 2124static void noinline ecb_cold
1677verify_watcher (EV_P_ W w) 2125verify_watcher (EV_P_ W w)
1678{ 2126{
1679 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2127 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1680 2128
1681 if (w->pending) 2129 if (w->pending)
1682 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2130 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1683} 2131}
1684 2132
1685static void noinline 2133static void noinline ecb_cold
1686verify_heap (EV_P_ ANHE *heap, int N) 2134verify_heap (EV_P_ ANHE *heap, int N)
1687{ 2135{
1688 int i; 2136 int i;
1689 2137
1690 for (i = HEAP0; i < N + HEAP0; ++i) 2138 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1695 2143
1696 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2144 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1697 } 2145 }
1698} 2146}
1699 2147
1700static void noinline 2148static void noinline ecb_cold
1701array_verify (EV_P_ W *ws, int cnt) 2149array_verify (EV_P_ W *ws, int cnt)
1702{ 2150{
1703 while (cnt--) 2151 while (cnt--)
1704 { 2152 {
1705 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2153 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1706 verify_watcher (EV_A_ ws [cnt]); 2154 verify_watcher (EV_A_ ws [cnt]);
1707 } 2155 }
1708} 2156}
1709#endif 2157#endif
1710 2158
1711#if EV_MINIMAL < 2 2159#if EV_FEATURE_API
1712void 2160void ecb_cold
1713ev_loop_verify (EV_P) 2161ev_verify (EV_P)
1714{ 2162{
1715#if EV_VERIFY 2163#if EV_VERIFY
1716 int i; 2164 int i;
1717 WL w; 2165 WL w;
1718 2166
… …
1752#if EV_FORK_ENABLE 2200#if EV_FORK_ENABLE
1753 assert (forkmax >= forkcnt); 2201 assert (forkmax >= forkcnt);
1754 array_verify (EV_A_ (W *)forks, forkcnt); 2202 array_verify (EV_A_ (W *)forks, forkcnt);
1755#endif 2203#endif
1756 2204
2205#if EV_CLEANUP_ENABLE
2206 assert (cleanupmax >= cleanupcnt);
2207 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2208#endif
2209
1757#if EV_ASYNC_ENABLE 2210#if EV_ASYNC_ENABLE
1758 assert (asyncmax >= asynccnt); 2211 assert (asyncmax >= asynccnt);
1759 array_verify (EV_A_ (W *)asyncs, asynccnt); 2212 array_verify (EV_A_ (W *)asyncs, asynccnt);
1760#endif 2213#endif
1761 2214
2215#if EV_PREPARE_ENABLE
1762 assert (preparemax >= preparecnt); 2216 assert (preparemax >= preparecnt);
1763 array_verify (EV_A_ (W *)prepares, preparecnt); 2217 array_verify (EV_A_ (W *)prepares, preparecnt);
2218#endif
1764 2219
2220#if EV_CHECK_ENABLE
1765 assert (checkmax >= checkcnt); 2221 assert (checkmax >= checkcnt);
1766 array_verify (EV_A_ (W *)checks, checkcnt); 2222 array_verify (EV_A_ (W *)checks, checkcnt);
2223#endif
1767 2224
1768# if 0 2225# if 0
2226#if EV_CHILD_ENABLE
1769 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2227 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1770 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2228 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2229#endif
1771# endif 2230# endif
1772#endif 2231#endif
1773} 2232}
1774#endif 2233#endif
1775 2234
1776#if EV_MULTIPLICITY 2235#if EV_MULTIPLICITY
1777struct ev_loop * 2236struct ev_loop * ecb_cold
1778ev_default_loop_init (unsigned int flags)
1779#else 2237#else
1780int 2238int
2239#endif
1781ev_default_loop (unsigned int flags) 2240ev_default_loop (unsigned int flags)
1782#endif
1783{ 2241{
1784 if (!ev_default_loop_ptr) 2242 if (!ev_default_loop_ptr)
1785 { 2243 {
1786#if EV_MULTIPLICITY 2244#if EV_MULTIPLICITY
1787 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2245 EV_P = ev_default_loop_ptr = &default_loop_struct;
1788#else 2246#else
1789 ev_default_loop_ptr = 1; 2247 ev_default_loop_ptr = 1;
1790#endif 2248#endif
1791 2249
1792 loop_init (EV_A_ flags); 2250 loop_init (EV_A_ flags);
1793 2251
1794 if (ev_backend (EV_A)) 2252 if (ev_backend (EV_A))
1795 { 2253 {
1796#ifndef _WIN32 2254#if EV_CHILD_ENABLE
1797 ev_signal_init (&childev, childcb, SIGCHLD); 2255 ev_signal_init (&childev, childcb, SIGCHLD);
1798 ev_set_priority (&childev, EV_MAXPRI); 2256 ev_set_priority (&childev, EV_MAXPRI);
1799 ev_signal_start (EV_A_ &childev); 2257 ev_signal_start (EV_A_ &childev);
1800 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2258 ev_unref (EV_A); /* child watcher should not keep loop alive */
1801#endif 2259#endif
… …
1806 2264
1807 return ev_default_loop_ptr; 2265 return ev_default_loop_ptr;
1808} 2266}
1809 2267
1810void 2268void
1811ev_default_destroy (void) 2269ev_loop_fork (EV_P)
1812{ 2270{
1813#if EV_MULTIPLICITY
1814 struct ev_loop *loop = ev_default_loop_ptr;
1815#endif
1816
1817 ev_default_loop_ptr = 0;
1818
1819#ifndef _WIN32
1820 ev_ref (EV_A); /* child watcher */
1821 ev_signal_stop (EV_A_ &childev);
1822#endif
1823
1824 loop_destroy (EV_A);
1825}
1826
1827void
1828ev_default_fork (void)
1829{
1830#if EV_MULTIPLICITY
1831 struct ev_loop *loop = ev_default_loop_ptr;
1832#endif
1833
1834 postfork = 1; /* must be in line with ev_loop_fork */ 2271 postfork = 1; /* must be in line with ev_default_fork */
1835} 2272}
1836 2273
1837/*****************************************************************************/ 2274/*****************************************************************************/
1838 2275
1839void 2276void
… …
1861 2298
1862 for (pri = NUMPRI; pri--; ) 2299 for (pri = NUMPRI; pri--; )
1863 while (pendingcnt [pri]) 2300 while (pendingcnt [pri])
1864 { 2301 {
1865 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2302 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1866
1867 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1868 /* ^ this is no longer true, as pending_w could be here */
1869 2303
1870 p->w->pending = 0; 2304 p->w->pending = 0;
1871 EV_CB_INVOKE (p->w, p->events); 2305 EV_CB_INVOKE (p->w, p->events);
1872 EV_FREQUENT_CHECK; 2306 EV_FREQUENT_CHECK;
1873 } 2307 }
… …
1930 EV_FREQUENT_CHECK; 2364 EV_FREQUENT_CHECK;
1931 feed_reverse (EV_A_ (W)w); 2365 feed_reverse (EV_A_ (W)w);
1932 } 2366 }
1933 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2367 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1934 2368
1935 feed_reverse_done (EV_A_ EV_TIMEOUT); 2369 feed_reverse_done (EV_A_ EV_TIMER);
1936 } 2370 }
1937} 2371}
1938 2372
1939#if EV_PERIODIC_ENABLE 2373#if EV_PERIODIC_ENABLE
2374
2375static void noinline
2376periodic_recalc (EV_P_ ev_periodic *w)
2377{
2378 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2379 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2380
2381 /* the above almost always errs on the low side */
2382 while (at <= ev_rt_now)
2383 {
2384 ev_tstamp nat = at + w->interval;
2385
2386 /* when resolution fails us, we use ev_rt_now */
2387 if (expect_false (nat == at))
2388 {
2389 at = ev_rt_now;
2390 break;
2391 }
2392
2393 at = nat;
2394 }
2395
2396 ev_at (w) = at;
2397}
2398
1940/* make periodics pending */ 2399/* make periodics pending */
1941inline_size void 2400inline_size void
1942periodics_reify (EV_P) 2401periodics_reify (EV_P)
1943{ 2402{
1944 EV_FREQUENT_CHECK; 2403 EV_FREQUENT_CHECK;
… …
1963 ANHE_at_cache (periodics [HEAP0]); 2422 ANHE_at_cache (periodics [HEAP0]);
1964 downheap (periodics, periodiccnt, HEAP0); 2423 downheap (periodics, periodiccnt, HEAP0);
1965 } 2424 }
1966 else if (w->interval) 2425 else if (w->interval)
1967 { 2426 {
1968 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2427 periodic_recalc (EV_A_ w);
1969 /* if next trigger time is not sufficiently in the future, put it there */
1970 /* this might happen because of floating point inexactness */
1971 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1972 {
1973 ev_at (w) += w->interval;
1974
1975 /* if interval is unreasonably low we might still have a time in the past */
1976 /* so correct this. this will make the periodic very inexact, but the user */
1977 /* has effectively asked to get triggered more often than possible */
1978 if (ev_at (w) < ev_rt_now)
1979 ev_at (w) = ev_rt_now;
1980 }
1981
1982 ANHE_at_cache (periodics [HEAP0]); 2428 ANHE_at_cache (periodics [HEAP0]);
1983 downheap (periodics, periodiccnt, HEAP0); 2429 downheap (periodics, periodiccnt, HEAP0);
1984 } 2430 }
1985 else 2431 else
1986 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2432 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1993 feed_reverse_done (EV_A_ EV_PERIODIC); 2439 feed_reverse_done (EV_A_ EV_PERIODIC);
1994 } 2440 }
1995} 2441}
1996 2442
1997/* simply recalculate all periodics */ 2443/* simply recalculate all periodics */
1998/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2444/* TODO: maybe ensure that at least one event happens when jumping forward? */
1999static void noinline 2445static void noinline ecb_cold
2000periodics_reschedule (EV_P) 2446periodics_reschedule (EV_P)
2001{ 2447{
2002 int i; 2448 int i;
2003 2449
2004 /* adjust periodics after time jump */ 2450 /* adjust periodics after time jump */
… …
2007 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2453 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2008 2454
2009 if (w->reschedule_cb) 2455 if (w->reschedule_cb)
2010 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2456 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2011 else if (w->interval) 2457 else if (w->interval)
2012 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2458 periodic_recalc (EV_A_ w);
2013 2459
2014 ANHE_at_cache (periodics [i]); 2460 ANHE_at_cache (periodics [i]);
2015 } 2461 }
2016 2462
2017 reheap (periodics, periodiccnt); 2463 reheap (periodics, periodiccnt);
2018} 2464}
2019#endif 2465#endif
2020 2466
2021/* adjust all timers by a given offset */ 2467/* adjust all timers by a given offset */
2022static void noinline 2468static void noinline ecb_cold
2023timers_reschedule (EV_P_ ev_tstamp adjust) 2469timers_reschedule (EV_P_ ev_tstamp adjust)
2024{ 2470{
2025 int i; 2471 int i;
2026 2472
2027 for (i = 0; i < timercnt; ++i) 2473 for (i = 0; i < timercnt; ++i)
… …
2031 ANHE_at_cache (*he); 2477 ANHE_at_cache (*he);
2032 } 2478 }
2033} 2479}
2034 2480
2035/* fetch new monotonic and realtime times from the kernel */ 2481/* fetch new monotonic and realtime times from the kernel */
2036/* also detetc if there was a timejump, and act accordingly */ 2482/* also detect if there was a timejump, and act accordingly */
2037inline_speed void 2483inline_speed void
2038time_update (EV_P_ ev_tstamp max_block) 2484time_update (EV_P_ ev_tstamp max_block)
2039{ 2485{
2040#if EV_USE_MONOTONIC 2486#if EV_USE_MONOTONIC
2041 if (expect_true (have_monotonic)) 2487 if (expect_true (have_monotonic))
… …
2064 * doesn't hurt either as we only do this on time-jumps or 2510 * doesn't hurt either as we only do this on time-jumps or
2065 * in the unlikely event of having been preempted here. 2511 * in the unlikely event of having been preempted here.
2066 */ 2512 */
2067 for (i = 4; --i; ) 2513 for (i = 4; --i; )
2068 { 2514 {
2515 ev_tstamp diff;
2069 rtmn_diff = ev_rt_now - mn_now; 2516 rtmn_diff = ev_rt_now - mn_now;
2070 2517
2518 diff = odiff - rtmn_diff;
2519
2071 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2520 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2072 return; /* all is well */ 2521 return; /* all is well */
2073 2522
2074 ev_rt_now = ev_time (); 2523 ev_rt_now = ev_time ();
2075 mn_now = get_clock (); 2524 mn_now = get_clock ();
2076 now_floor = mn_now; 2525 now_floor = mn_now;
… …
2099 mn_now = ev_rt_now; 2548 mn_now = ev_rt_now;
2100 } 2549 }
2101} 2550}
2102 2551
2103void 2552void
2104ev_loop (EV_P_ int flags) 2553ev_run (EV_P_ int flags)
2105{ 2554{
2106#if EV_MINIMAL < 2 2555#if EV_FEATURE_API
2107 ++loop_depth; 2556 ++loop_depth;
2108#endif 2557#endif
2109 2558
2110 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2559 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2111 2560
2112 loop_done = EVUNLOOP_CANCEL; 2561 loop_done = EVBREAK_CANCEL;
2113 2562
2114 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2563 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2115 2564
2116 do 2565 do
2117 { 2566 {
2118#if EV_VERIFY >= 2 2567#if EV_VERIFY >= 2
2119 ev_loop_verify (EV_A); 2568 ev_verify (EV_A);
2120#endif 2569#endif
2121 2570
2122#ifndef _WIN32 2571#ifndef _WIN32
2123 if (expect_false (curpid)) /* penalise the forking check even more */ 2572 if (expect_false (curpid)) /* penalise the forking check even more */
2124 if (expect_false (getpid () != curpid)) 2573 if (expect_false (getpid () != curpid))
… …
2136 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2585 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2137 EV_INVOKE_PENDING; 2586 EV_INVOKE_PENDING;
2138 } 2587 }
2139#endif 2588#endif
2140 2589
2590#if EV_PREPARE_ENABLE
2141 /* queue prepare watchers (and execute them) */ 2591 /* queue prepare watchers (and execute them) */
2142 if (expect_false (preparecnt)) 2592 if (expect_false (preparecnt))
2143 { 2593 {
2144 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2594 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2145 EV_INVOKE_PENDING; 2595 EV_INVOKE_PENDING;
2146 } 2596 }
2597#endif
2147 2598
2148 if (expect_false (loop_done)) 2599 if (expect_false (loop_done))
2149 break; 2600 break;
2150 2601
2151 /* we might have forked, so reify kernel state if necessary */ 2602 /* we might have forked, so reify kernel state if necessary */
… …
2158 /* calculate blocking time */ 2609 /* calculate blocking time */
2159 { 2610 {
2160 ev_tstamp waittime = 0.; 2611 ev_tstamp waittime = 0.;
2161 ev_tstamp sleeptime = 0.; 2612 ev_tstamp sleeptime = 0.;
2162 2613
2614 /* remember old timestamp for io_blocktime calculation */
2615 ev_tstamp prev_mn_now = mn_now;
2616
2617 /* update time to cancel out callback processing overhead */
2618 time_update (EV_A_ 1e100);
2619
2620 /* from now on, we want a pipe-wake-up */
2621 pipe_write_wanted = 1;
2622
2623 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2624
2163 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2625 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2164 { 2626 {
2165 /* remember old timestamp for io_blocktime calculation */
2166 ev_tstamp prev_mn_now = mn_now;
2167
2168 /* update time to cancel out callback processing overhead */
2169 time_update (EV_A_ 1e100);
2170
2171 waittime = MAX_BLOCKTIME; 2627 waittime = MAX_BLOCKTIME;
2172 2628
2173 if (timercnt) 2629 if (timercnt)
2174 { 2630 {
2175 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2631 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2176 if (waittime > to) waittime = to; 2632 if (waittime > to) waittime = to;
2177 } 2633 }
2178 2634
2179#if EV_PERIODIC_ENABLE 2635#if EV_PERIODIC_ENABLE
2180 if (periodiccnt) 2636 if (periodiccnt)
2181 { 2637 {
2182 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2638 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2183 if (waittime > to) waittime = to; 2639 if (waittime > to) waittime = to;
2184 } 2640 }
2185#endif 2641#endif
2186 2642
2187 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2643 /* don't let timeouts decrease the waittime below timeout_blocktime */
2188 if (expect_false (waittime < timeout_blocktime)) 2644 if (expect_false (waittime < timeout_blocktime))
2189 waittime = timeout_blocktime; 2645 waittime = timeout_blocktime;
2646
2647 /* at this point, we NEED to wait, so we have to ensure */
2648 /* to pass a minimum nonzero value to the backend */
2649 if (expect_false (waittime < backend_mintime))
2650 waittime = backend_mintime;
2190 2651
2191 /* extra check because io_blocktime is commonly 0 */ 2652 /* extra check because io_blocktime is commonly 0 */
2192 if (expect_false (io_blocktime)) 2653 if (expect_false (io_blocktime))
2193 { 2654 {
2194 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2655 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2195 2656
2196 if (sleeptime > waittime - backend_fudge) 2657 if (sleeptime > waittime - backend_mintime)
2197 sleeptime = waittime - backend_fudge; 2658 sleeptime = waittime - backend_mintime;
2198 2659
2199 if (expect_true (sleeptime > 0.)) 2660 if (expect_true (sleeptime > 0.))
2200 { 2661 {
2201 ev_sleep (sleeptime); 2662 ev_sleep (sleeptime);
2202 waittime -= sleeptime; 2663 waittime -= sleeptime;
2203 } 2664 }
2204 } 2665 }
2205 } 2666 }
2206 2667
2207#if EV_MINIMAL < 2 2668#if EV_FEATURE_API
2208 ++loop_count; 2669 ++loop_count;
2209#endif 2670#endif
2210 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 2671 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2211 backend_poll (EV_A_ waittime); 2672 backend_poll (EV_A_ waittime);
2212 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 2673 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2674
2675 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2676
2677 if (pipe_write_skipped)
2678 {
2679 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2680 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2681 }
2682
2213 2683
2214 /* update ev_rt_now, do magic */ 2684 /* update ev_rt_now, do magic */
2215 time_update (EV_A_ waittime + sleeptime); 2685 time_update (EV_A_ waittime + sleeptime);
2216 } 2686 }
2217 2687
… …
2224#if EV_IDLE_ENABLE 2694#if EV_IDLE_ENABLE
2225 /* queue idle watchers unless other events are pending */ 2695 /* queue idle watchers unless other events are pending */
2226 idle_reify (EV_A); 2696 idle_reify (EV_A);
2227#endif 2697#endif
2228 2698
2699#if EV_CHECK_ENABLE
2229 /* queue check watchers, to be executed first */ 2700 /* queue check watchers, to be executed first */
2230 if (expect_false (checkcnt)) 2701 if (expect_false (checkcnt))
2231 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2702 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2703#endif
2232 2704
2233 EV_INVOKE_PENDING; 2705 EV_INVOKE_PENDING;
2234 } 2706 }
2235 while (expect_true ( 2707 while (expect_true (
2236 activecnt 2708 activecnt
2237 && !loop_done 2709 && !loop_done
2238 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2710 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2239 )); 2711 ));
2240 2712
2241 if (loop_done == EVUNLOOP_ONE) 2713 if (loop_done == EVBREAK_ONE)
2242 loop_done = EVUNLOOP_CANCEL; 2714 loop_done = EVBREAK_CANCEL;
2243 2715
2244#if EV_MINIMAL < 2 2716#if EV_FEATURE_API
2245 --loop_depth; 2717 --loop_depth;
2246#endif 2718#endif
2247} 2719}
2248 2720
2249void 2721void
2250ev_unloop (EV_P_ int how) 2722ev_break (EV_P_ int how)
2251{ 2723{
2252 loop_done = how; 2724 loop_done = how;
2253} 2725}
2254 2726
2255void 2727void
… …
2302inline_size void 2774inline_size void
2303wlist_del (WL *head, WL elem) 2775wlist_del (WL *head, WL elem)
2304{ 2776{
2305 while (*head) 2777 while (*head)
2306 { 2778 {
2307 if (*head == elem) 2779 if (expect_true (*head == elem))
2308 { 2780 {
2309 *head = elem->next; 2781 *head = elem->next;
2310 return; 2782 break;
2311 } 2783 }
2312 2784
2313 head = &(*head)->next; 2785 head = &(*head)->next;
2314 } 2786 }
2315} 2787}
… …
2375 2847
2376 if (expect_false (ev_is_active (w))) 2848 if (expect_false (ev_is_active (w)))
2377 return; 2849 return;
2378 2850
2379 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2851 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2380 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2852 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2381 2853
2382 EV_FREQUENT_CHECK; 2854 EV_FREQUENT_CHECK;
2383 2855
2384 ev_start (EV_A_ (W)w, 1); 2856 ev_start (EV_A_ (W)w, 1);
2385 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2857 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
… …
2403 EV_FREQUENT_CHECK; 2875 EV_FREQUENT_CHECK;
2404 2876
2405 wlist_del (&anfds[w->fd].head, (WL)w); 2877 wlist_del (&anfds[w->fd].head, (WL)w);
2406 ev_stop (EV_A_ (W)w); 2878 ev_stop (EV_A_ (W)w);
2407 2879
2408 fd_change (EV_A_ w->fd, 1); 2880 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2409 2881
2410 EV_FREQUENT_CHECK; 2882 EV_FREQUENT_CHECK;
2411} 2883}
2412 2884
2413void noinline 2885void noinline
… …
2455 timers [active] = timers [timercnt + HEAP0]; 2927 timers [active] = timers [timercnt + HEAP0];
2456 adjustheap (timers, timercnt, active); 2928 adjustheap (timers, timercnt, active);
2457 } 2929 }
2458 } 2930 }
2459 2931
2460 EV_FREQUENT_CHECK;
2461
2462 ev_at (w) -= mn_now; 2932 ev_at (w) -= mn_now;
2463 2933
2464 ev_stop (EV_A_ (W)w); 2934 ev_stop (EV_A_ (W)w);
2935
2936 EV_FREQUENT_CHECK;
2465} 2937}
2466 2938
2467void noinline 2939void noinline
2468ev_timer_again (EV_P_ ev_timer *w) 2940ev_timer_again (EV_P_ ev_timer *w)
2469{ 2941{
… …
2505 if (w->reschedule_cb) 2977 if (w->reschedule_cb)
2506 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2978 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2507 else if (w->interval) 2979 else if (w->interval)
2508 { 2980 {
2509 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2981 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2510 /* this formula differs from the one in periodic_reify because we do not always round up */ 2982 periodic_recalc (EV_A_ w);
2511 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2512 } 2983 }
2513 else 2984 else
2514 ev_at (w) = w->offset; 2985 ev_at (w) = w->offset;
2515 2986
2516 EV_FREQUENT_CHECK; 2987 EV_FREQUENT_CHECK;
… …
2548 periodics [active] = periodics [periodiccnt + HEAP0]; 3019 periodics [active] = periodics [periodiccnt + HEAP0];
2549 adjustheap (periodics, periodiccnt, active); 3020 adjustheap (periodics, periodiccnt, active);
2550 } 3021 }
2551 } 3022 }
2552 3023
2553 EV_FREQUENT_CHECK;
2554
2555 ev_stop (EV_A_ (W)w); 3024 ev_stop (EV_A_ (W)w);
3025
3026 EV_FREQUENT_CHECK;
2556} 3027}
2557 3028
2558void noinline 3029void noinline
2559ev_periodic_again (EV_P_ ev_periodic *w) 3030ev_periodic_again (EV_P_ ev_periodic *w)
2560{ 3031{
… …
2566 3037
2567#ifndef SA_RESTART 3038#ifndef SA_RESTART
2568# define SA_RESTART 0 3039# define SA_RESTART 0
2569#endif 3040#endif
2570 3041
3042#if EV_SIGNAL_ENABLE
3043
2571void noinline 3044void noinline
2572ev_signal_start (EV_P_ ev_signal *w) 3045ev_signal_start (EV_P_ ev_signal *w)
2573{ 3046{
2574#if EV_MULTIPLICITY
2575 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2576#endif
2577 if (expect_false (ev_is_active (w))) 3047 if (expect_false (ev_is_active (w)))
2578 return; 3048 return;
2579 3049
2580 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3050 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2581 3051
2582 evpipe_init (EV_A); 3052#if EV_MULTIPLICITY
3053 assert (("libev: a signal must not be attached to two different loops",
3054 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2583 3055
2584 EV_FREQUENT_CHECK; 3056 signals [w->signum - 1].loop = EV_A;
3057#endif
2585 3058
3059 EV_FREQUENT_CHECK;
3060
3061#if EV_USE_SIGNALFD
3062 if (sigfd == -2)
2586 { 3063 {
2587#ifndef _WIN32 3064 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2588 sigset_t full, prev; 3065 if (sigfd < 0 && errno == EINVAL)
2589 sigfillset (&full); 3066 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2590 sigprocmask (SIG_SETMASK, &full, &prev);
2591#endif
2592 3067
2593 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3068 if (sigfd >= 0)
3069 {
3070 fd_intern (sigfd); /* doing it twice will not hurt */
2594 3071
2595#ifndef _WIN32 3072 sigemptyset (&sigfd_set);
2596 sigprocmask (SIG_SETMASK, &prev, 0); 3073
2597#endif 3074 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3075 ev_set_priority (&sigfd_w, EV_MAXPRI);
3076 ev_io_start (EV_A_ &sigfd_w);
3077 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3078 }
2598 } 3079 }
3080
3081 if (sigfd >= 0)
3082 {
3083 /* TODO: check .head */
3084 sigaddset (&sigfd_set, w->signum);
3085 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3086
3087 signalfd (sigfd, &sigfd_set, 0);
3088 }
3089#endif
2599 3090
2600 ev_start (EV_A_ (W)w, 1); 3091 ev_start (EV_A_ (W)w, 1);
2601 wlist_add (&signals [w->signum - 1].head, (WL)w); 3092 wlist_add (&signals [w->signum - 1].head, (WL)w);
2602 3093
2603 if (!((WL)w)->next) 3094 if (!((WL)w)->next)
3095# if EV_USE_SIGNALFD
3096 if (sigfd < 0) /*TODO*/
3097# endif
2604 { 3098 {
2605#if _WIN32 3099# ifdef _WIN32
3100 evpipe_init (EV_A);
3101
2606 signal (w->signum, ev_sighandler); 3102 signal (w->signum, ev_sighandler);
2607#else 3103# else
2608 struct sigaction sa = { }; 3104 struct sigaction sa;
3105
3106 evpipe_init (EV_A);
3107
2609 sa.sa_handler = ev_sighandler; 3108 sa.sa_handler = ev_sighandler;
2610 sigfillset (&sa.sa_mask); 3109 sigfillset (&sa.sa_mask);
2611 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3110 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2612 sigaction (w->signum, &sa, 0); 3111 sigaction (w->signum, &sa, 0);
3112
3113 if (origflags & EVFLAG_NOSIGMASK)
3114 {
3115 sigemptyset (&sa.sa_mask);
3116 sigaddset (&sa.sa_mask, w->signum);
3117 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3118 }
2613#endif 3119#endif
2614 } 3120 }
2615 3121
2616 EV_FREQUENT_CHECK; 3122 EV_FREQUENT_CHECK;
2617} 3123}
2618 3124
2619void noinline 3125void noinline
… …
2627 3133
2628 wlist_del (&signals [w->signum - 1].head, (WL)w); 3134 wlist_del (&signals [w->signum - 1].head, (WL)w);
2629 ev_stop (EV_A_ (W)w); 3135 ev_stop (EV_A_ (W)w);
2630 3136
2631 if (!signals [w->signum - 1].head) 3137 if (!signals [w->signum - 1].head)
3138 {
3139#if EV_MULTIPLICITY
3140 signals [w->signum - 1].loop = 0; /* unattach from signal */
3141#endif
3142#if EV_USE_SIGNALFD
3143 if (sigfd >= 0)
3144 {
3145 sigset_t ss;
3146
3147 sigemptyset (&ss);
3148 sigaddset (&ss, w->signum);
3149 sigdelset (&sigfd_set, w->signum);
3150
3151 signalfd (sigfd, &sigfd_set, 0);
3152 sigprocmask (SIG_UNBLOCK, &ss, 0);
3153 }
3154 else
3155#endif
2632 signal (w->signum, SIG_DFL); 3156 signal (w->signum, SIG_DFL);
3157 }
2633 3158
2634 EV_FREQUENT_CHECK; 3159 EV_FREQUENT_CHECK;
2635} 3160}
3161
3162#endif
3163
3164#if EV_CHILD_ENABLE
2636 3165
2637void 3166void
2638ev_child_start (EV_P_ ev_child *w) 3167ev_child_start (EV_P_ ev_child *w)
2639{ 3168{
2640#if EV_MULTIPLICITY 3169#if EV_MULTIPLICITY
… …
2644 return; 3173 return;
2645 3174
2646 EV_FREQUENT_CHECK; 3175 EV_FREQUENT_CHECK;
2647 3176
2648 ev_start (EV_A_ (W)w, 1); 3177 ev_start (EV_A_ (W)w, 1);
2649 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3178 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2650 3179
2651 EV_FREQUENT_CHECK; 3180 EV_FREQUENT_CHECK;
2652} 3181}
2653 3182
2654void 3183void
… …
2658 if (expect_false (!ev_is_active (w))) 3187 if (expect_false (!ev_is_active (w)))
2659 return; 3188 return;
2660 3189
2661 EV_FREQUENT_CHECK; 3190 EV_FREQUENT_CHECK;
2662 3191
2663 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3192 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2664 ev_stop (EV_A_ (W)w); 3193 ev_stop (EV_A_ (W)w);
2665 3194
2666 EV_FREQUENT_CHECK; 3195 EV_FREQUENT_CHECK;
2667} 3196}
3197
3198#endif
2668 3199
2669#if EV_STAT_ENABLE 3200#if EV_STAT_ENABLE
2670 3201
2671# ifdef _WIN32 3202# ifdef _WIN32
2672# undef lstat 3203# undef lstat
… …
2678#define MIN_STAT_INTERVAL 0.1074891 3209#define MIN_STAT_INTERVAL 0.1074891
2679 3210
2680static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3211static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2681 3212
2682#if EV_USE_INOTIFY 3213#if EV_USE_INOTIFY
2683# define EV_INOTIFY_BUFSIZE 8192 3214
3215/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3216# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2684 3217
2685static void noinline 3218static void noinline
2686infy_add (EV_P_ ev_stat *w) 3219infy_add (EV_P_ ev_stat *w)
2687{ 3220{
2688 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); 3221 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);
2689 3222
2690 if (w->wd < 0) 3223 if (w->wd >= 0)
3224 {
3225 struct statfs sfs;
3226
3227 /* now local changes will be tracked by inotify, but remote changes won't */
3228 /* unless the filesystem is known to be local, we therefore still poll */
3229 /* also do poll on <2.6.25, but with normal frequency */
3230
3231 if (!fs_2625)
3232 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3233 else if (!statfs (w->path, &sfs)
3234 && (sfs.f_type == 0x1373 /* devfs */
3235 || sfs.f_type == 0xEF53 /* ext2/3 */
3236 || sfs.f_type == 0x3153464a /* jfs */
3237 || sfs.f_type == 0x52654973 /* reiser3 */
3238 || sfs.f_type == 0x01021994 /* tempfs */
3239 || sfs.f_type == 0x58465342 /* xfs */))
3240 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3241 else
3242 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2691 { 3243 }
3244 else
3245 {
3246 /* can't use inotify, continue to stat */
2692 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3247 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2693 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2694 3248
2695 /* monitor some parent directory for speedup hints */ 3249 /* if path is not there, monitor some parent directory for speedup hints */
2696 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3250 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2697 /* but an efficiency issue only */ 3251 /* but an efficiency issue only */
2698 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3252 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2699 { 3253 {
2700 char path [4096]; 3254 char path [4096];
… …
2710 if (!pend || pend == path) 3264 if (!pend || pend == path)
2711 break; 3265 break;
2712 3266
2713 *pend = 0; 3267 *pend = 0;
2714 w->wd = inotify_add_watch (fs_fd, path, mask); 3268 w->wd = inotify_add_watch (fs_fd, path, mask);
2715 } 3269 }
2716 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3270 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2717 } 3271 }
2718 } 3272 }
2719 3273
2720 if (w->wd >= 0) 3274 if (w->wd >= 0)
2721 {
2722 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3275 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2723 3276
2724 /* now local changes will be tracked by inotify, but remote changes won't */ 3277 /* now re-arm timer, if required */
2725 /* unless the filesystem it known to be local, we therefore still poll */ 3278 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2726 /* also do poll on <2.6.25, but with normal frequency */
2727 struct statfs sfs;
2728
2729 if (fs_2625 && !statfs (w->path, &sfs))
2730 if (sfs.f_type == 0x1373 /* devfs */
2731 || sfs.f_type == 0xEF53 /* ext2/3 */
2732 || sfs.f_type == 0x3153464a /* jfs */
2733 || sfs.f_type == 0x52654973 /* reiser3 */
2734 || sfs.f_type == 0x01021994 /* tempfs */
2735 || sfs.f_type == 0x58465342 /* xfs */)
2736 return;
2737
2738 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2739 ev_timer_again (EV_A_ &w->timer); 3279 ev_timer_again (EV_A_ &w->timer);
2740 } 3280 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2741} 3281}
2742 3282
2743static void noinline 3283static void noinline
2744infy_del (EV_P_ ev_stat *w) 3284infy_del (EV_P_ ev_stat *w)
2745{ 3285{
… …
2748 3288
2749 if (wd < 0) 3289 if (wd < 0)
2750 return; 3290 return;
2751 3291
2752 w->wd = -2; 3292 w->wd = -2;
2753 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3293 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2754 wlist_del (&fs_hash [slot].head, (WL)w); 3294 wlist_del (&fs_hash [slot].head, (WL)w);
2755 3295
2756 /* remove this watcher, if others are watching it, they will rearm */ 3296 /* remove this watcher, if others are watching it, they will rearm */
2757 inotify_rm_watch (fs_fd, wd); 3297 inotify_rm_watch (fs_fd, wd);
2758} 3298}
… …
2760static void noinline 3300static void noinline
2761infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3301infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2762{ 3302{
2763 if (slot < 0) 3303 if (slot < 0)
2764 /* overflow, need to check for all hash slots */ 3304 /* overflow, need to check for all hash slots */
2765 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3305 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2766 infy_wd (EV_A_ slot, wd, ev); 3306 infy_wd (EV_A_ slot, wd, ev);
2767 else 3307 else
2768 { 3308 {
2769 WL w_; 3309 WL w_;
2770 3310
2771 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3311 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2772 { 3312 {
2773 ev_stat *w = (ev_stat *)w_; 3313 ev_stat *w = (ev_stat *)w_;
2774 w_ = w_->next; /* lets us remove this watcher and all before it */ 3314 w_ = w_->next; /* lets us remove this watcher and all before it */
2775 3315
2776 if (w->wd == wd || wd == -1) 3316 if (w->wd == wd || wd == -1)
2777 { 3317 {
2778 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3318 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2779 { 3319 {
2780 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3320 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2781 w->wd = -1; 3321 w->wd = -1;
2782 infy_add (EV_A_ w); /* re-add, no matter what */ 3322 infy_add (EV_A_ w); /* re-add, no matter what */
2783 } 3323 }
2784 3324
2785 stat_timer_cb (EV_A_ &w->timer, 0); 3325 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2790 3330
2791static void 3331static void
2792infy_cb (EV_P_ ev_io *w, int revents) 3332infy_cb (EV_P_ ev_io *w, int revents)
2793{ 3333{
2794 char buf [EV_INOTIFY_BUFSIZE]; 3334 char buf [EV_INOTIFY_BUFSIZE];
2795 struct inotify_event *ev = (struct inotify_event *)buf;
2796 int ofs; 3335 int ofs;
2797 int len = read (fs_fd, buf, sizeof (buf)); 3336 int len = read (fs_fd, buf, sizeof (buf));
2798 3337
2799 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3338 for (ofs = 0; ofs < len; )
3339 {
3340 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2800 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3341 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3342 ofs += sizeof (struct inotify_event) + ev->len;
3343 }
2801} 3344}
2802 3345
2803inline_size void 3346inline_size void ecb_cold
2804check_2625 (EV_P) 3347ev_check_2625 (EV_P)
2805{ 3348{
2806 /* kernels < 2.6.25 are borked 3349 /* kernels < 2.6.25 are borked
2807 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3350 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2808 */ 3351 */
2809 struct utsname buf; 3352 if (ev_linux_version () < 0x020619)
2810 int major, minor, micro;
2811
2812 if (uname (&buf))
2813 return; 3353 return;
2814 3354
2815 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2816 return;
2817
2818 if (major < 2
2819 || (major == 2 && minor < 6)
2820 || (major == 2 && minor == 6 && micro < 25))
2821 return;
2822
2823 fs_2625 = 1; 3355 fs_2625 = 1;
3356}
3357
3358inline_size int
3359infy_newfd (void)
3360{
3361#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3362 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3363 if (fd >= 0)
3364 return fd;
3365#endif
3366 return inotify_init ();
2824} 3367}
2825 3368
2826inline_size void 3369inline_size void
2827infy_init (EV_P) 3370infy_init (EV_P)
2828{ 3371{
2829 if (fs_fd != -2) 3372 if (fs_fd != -2)
2830 return; 3373 return;
2831 3374
2832 fs_fd = -1; 3375 fs_fd = -1;
2833 3376
2834 check_2625 (EV_A); 3377 ev_check_2625 (EV_A);
2835 3378
2836 fs_fd = inotify_init (); 3379 fs_fd = infy_newfd ();
2837 3380
2838 if (fs_fd >= 0) 3381 if (fs_fd >= 0)
2839 { 3382 {
3383 fd_intern (fs_fd);
2840 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3384 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2841 ev_set_priority (&fs_w, EV_MAXPRI); 3385 ev_set_priority (&fs_w, EV_MAXPRI);
2842 ev_io_start (EV_A_ &fs_w); 3386 ev_io_start (EV_A_ &fs_w);
3387 ev_unref (EV_A);
2843 } 3388 }
2844} 3389}
2845 3390
2846inline_size void 3391inline_size void
2847infy_fork (EV_P) 3392infy_fork (EV_P)
… …
2849 int slot; 3394 int slot;
2850 3395
2851 if (fs_fd < 0) 3396 if (fs_fd < 0)
2852 return; 3397 return;
2853 3398
3399 ev_ref (EV_A);
3400 ev_io_stop (EV_A_ &fs_w);
2854 close (fs_fd); 3401 close (fs_fd);
2855 fs_fd = inotify_init (); 3402 fs_fd = infy_newfd ();
2856 3403
3404 if (fs_fd >= 0)
3405 {
3406 fd_intern (fs_fd);
3407 ev_io_set (&fs_w, fs_fd, EV_READ);
3408 ev_io_start (EV_A_ &fs_w);
3409 ev_unref (EV_A);
3410 }
3411
2857 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3412 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2858 { 3413 {
2859 WL w_ = fs_hash [slot].head; 3414 WL w_ = fs_hash [slot].head;
2860 fs_hash [slot].head = 0; 3415 fs_hash [slot].head = 0;
2861 3416
2862 while (w_) 3417 while (w_)
… …
2867 w->wd = -1; 3422 w->wd = -1;
2868 3423
2869 if (fs_fd >= 0) 3424 if (fs_fd >= 0)
2870 infy_add (EV_A_ w); /* re-add, no matter what */ 3425 infy_add (EV_A_ w); /* re-add, no matter what */
2871 else 3426 else
3427 {
3428 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3429 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2872 ev_timer_again (EV_A_ &w->timer); 3430 ev_timer_again (EV_A_ &w->timer);
3431 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3432 }
2873 } 3433 }
2874 } 3434 }
2875} 3435}
2876 3436
2877#endif 3437#endif
… …
2894static void noinline 3454static void noinline
2895stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3455stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2896{ 3456{
2897 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3457 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2898 3458
2899 /* we copy this here each the time so that */ 3459 ev_statdata prev = w->attr;
2900 /* prev has the old value when the callback gets invoked */
2901 w->prev = w->attr;
2902 ev_stat_stat (EV_A_ w); 3460 ev_stat_stat (EV_A_ w);
2903 3461
2904 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3462 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2905 if ( 3463 if (
2906 w->prev.st_dev != w->attr.st_dev 3464 prev.st_dev != w->attr.st_dev
2907 || w->prev.st_ino != w->attr.st_ino 3465 || prev.st_ino != w->attr.st_ino
2908 || w->prev.st_mode != w->attr.st_mode 3466 || prev.st_mode != w->attr.st_mode
2909 || w->prev.st_nlink != w->attr.st_nlink 3467 || prev.st_nlink != w->attr.st_nlink
2910 || w->prev.st_uid != w->attr.st_uid 3468 || prev.st_uid != w->attr.st_uid
2911 || w->prev.st_gid != w->attr.st_gid 3469 || prev.st_gid != w->attr.st_gid
2912 || w->prev.st_rdev != w->attr.st_rdev 3470 || prev.st_rdev != w->attr.st_rdev
2913 || w->prev.st_size != w->attr.st_size 3471 || prev.st_size != w->attr.st_size
2914 || w->prev.st_atime != w->attr.st_atime 3472 || prev.st_atime != w->attr.st_atime
2915 || w->prev.st_mtime != w->attr.st_mtime 3473 || prev.st_mtime != w->attr.st_mtime
2916 || w->prev.st_ctime != w->attr.st_ctime 3474 || prev.st_ctime != w->attr.st_ctime
2917 ) { 3475 ) {
3476 /* we only update w->prev on actual differences */
3477 /* in case we test more often than invoke the callback, */
3478 /* to ensure that prev is always different to attr */
3479 w->prev = prev;
3480
2918 #if EV_USE_INOTIFY 3481 #if EV_USE_INOTIFY
2919 if (fs_fd >= 0) 3482 if (fs_fd >= 0)
2920 { 3483 {
2921 infy_del (EV_A_ w); 3484 infy_del (EV_A_ w);
2922 infy_add (EV_A_ w); 3485 infy_add (EV_A_ w);
… …
2947 3510
2948 if (fs_fd >= 0) 3511 if (fs_fd >= 0)
2949 infy_add (EV_A_ w); 3512 infy_add (EV_A_ w);
2950 else 3513 else
2951#endif 3514#endif
3515 {
2952 ev_timer_again (EV_A_ &w->timer); 3516 ev_timer_again (EV_A_ &w->timer);
3517 ev_unref (EV_A);
3518 }
2953 3519
2954 ev_start (EV_A_ (W)w, 1); 3520 ev_start (EV_A_ (W)w, 1);
2955 3521
2956 EV_FREQUENT_CHECK; 3522 EV_FREQUENT_CHECK;
2957} 3523}
… …
2966 EV_FREQUENT_CHECK; 3532 EV_FREQUENT_CHECK;
2967 3533
2968#if EV_USE_INOTIFY 3534#if EV_USE_INOTIFY
2969 infy_del (EV_A_ w); 3535 infy_del (EV_A_ w);
2970#endif 3536#endif
3537
3538 if (ev_is_active (&w->timer))
3539 {
3540 ev_ref (EV_A);
2971 ev_timer_stop (EV_A_ &w->timer); 3541 ev_timer_stop (EV_A_ &w->timer);
3542 }
2972 3543
2973 ev_stop (EV_A_ (W)w); 3544 ev_stop (EV_A_ (W)w);
2974 3545
2975 EV_FREQUENT_CHECK; 3546 EV_FREQUENT_CHECK;
2976} 3547}
… …
3021 3592
3022 EV_FREQUENT_CHECK; 3593 EV_FREQUENT_CHECK;
3023} 3594}
3024#endif 3595#endif
3025 3596
3597#if EV_PREPARE_ENABLE
3026void 3598void
3027ev_prepare_start (EV_P_ ev_prepare *w) 3599ev_prepare_start (EV_P_ ev_prepare *w)
3028{ 3600{
3029 if (expect_false (ev_is_active (w))) 3601 if (expect_false (ev_is_active (w)))
3030 return; 3602 return;
… …
3056 3628
3057 ev_stop (EV_A_ (W)w); 3629 ev_stop (EV_A_ (W)w);
3058 3630
3059 EV_FREQUENT_CHECK; 3631 EV_FREQUENT_CHECK;
3060} 3632}
3633#endif
3061 3634
3635#if EV_CHECK_ENABLE
3062void 3636void
3063ev_check_start (EV_P_ ev_check *w) 3637ev_check_start (EV_P_ ev_check *w)
3064{ 3638{
3065 if (expect_false (ev_is_active (w))) 3639 if (expect_false (ev_is_active (w)))
3066 return; 3640 return;
… …
3092 3666
3093 ev_stop (EV_A_ (W)w); 3667 ev_stop (EV_A_ (W)w);
3094 3668
3095 EV_FREQUENT_CHECK; 3669 EV_FREQUENT_CHECK;
3096} 3670}
3671#endif
3097 3672
3098#if EV_EMBED_ENABLE 3673#if EV_EMBED_ENABLE
3099void noinline 3674void noinline
3100ev_embed_sweep (EV_P_ ev_embed *w) 3675ev_embed_sweep (EV_P_ ev_embed *w)
3101{ 3676{
3102 ev_loop (w->other, EVLOOP_NONBLOCK); 3677 ev_run (w->other, EVRUN_NOWAIT);
3103} 3678}
3104 3679
3105static void 3680static void
3106embed_io_cb (EV_P_ ev_io *io, int revents) 3681embed_io_cb (EV_P_ ev_io *io, int revents)
3107{ 3682{
3108 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3683 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3109 3684
3110 if (ev_cb (w)) 3685 if (ev_cb (w))
3111 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3686 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3112 else 3687 else
3113 ev_loop (w->other, EVLOOP_NONBLOCK); 3688 ev_run (w->other, EVRUN_NOWAIT);
3114} 3689}
3115 3690
3116static void 3691static void
3117embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3692embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3118{ 3693{
3119 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3694 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3120 3695
3121 { 3696 {
3122 struct ev_loop *loop = w->other; 3697 EV_P = w->other;
3123 3698
3124 while (fdchangecnt) 3699 while (fdchangecnt)
3125 { 3700 {
3126 fd_reify (EV_A); 3701 fd_reify (EV_A);
3127 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3702 ev_run (EV_A_ EVRUN_NOWAIT);
3128 } 3703 }
3129 } 3704 }
3130} 3705}
3131 3706
3132static void 3707static void
… …
3135 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3710 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3136 3711
3137 ev_embed_stop (EV_A_ w); 3712 ev_embed_stop (EV_A_ w);
3138 3713
3139 { 3714 {
3140 struct ev_loop *loop = w->other; 3715 EV_P = w->other;
3141 3716
3142 ev_loop_fork (EV_A); 3717 ev_loop_fork (EV_A);
3143 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3718 ev_run (EV_A_ EVRUN_NOWAIT);
3144 } 3719 }
3145 3720
3146 ev_embed_start (EV_A_ w); 3721 ev_embed_start (EV_A_ w);
3147} 3722}
3148 3723
… …
3159{ 3734{
3160 if (expect_false (ev_is_active (w))) 3735 if (expect_false (ev_is_active (w)))
3161 return; 3736 return;
3162 3737
3163 { 3738 {
3164 struct ev_loop *loop = w->other; 3739 EV_P = w->other;
3165 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3740 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3166 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3741 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3167 } 3742 }
3168 3743
3169 EV_FREQUENT_CHECK; 3744 EV_FREQUENT_CHECK;
… …
3196 3771
3197 ev_io_stop (EV_A_ &w->io); 3772 ev_io_stop (EV_A_ &w->io);
3198 ev_prepare_stop (EV_A_ &w->prepare); 3773 ev_prepare_stop (EV_A_ &w->prepare);
3199 ev_fork_stop (EV_A_ &w->fork); 3774 ev_fork_stop (EV_A_ &w->fork);
3200 3775
3776 ev_stop (EV_A_ (W)w);
3777
3201 EV_FREQUENT_CHECK; 3778 EV_FREQUENT_CHECK;
3202} 3779}
3203#endif 3780#endif
3204 3781
3205#if EV_FORK_ENABLE 3782#if EV_FORK_ENABLE
… …
3238 3815
3239 EV_FREQUENT_CHECK; 3816 EV_FREQUENT_CHECK;
3240} 3817}
3241#endif 3818#endif
3242 3819
3820#if EV_CLEANUP_ENABLE
3821void
3822ev_cleanup_start (EV_P_ ev_cleanup *w)
3823{
3824 if (expect_false (ev_is_active (w)))
3825 return;
3826
3827 EV_FREQUENT_CHECK;
3828
3829 ev_start (EV_A_ (W)w, ++cleanupcnt);
3830 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3831 cleanups [cleanupcnt - 1] = w;
3832
3833 /* cleanup watchers should never keep a refcount on the loop */
3834 ev_unref (EV_A);
3835 EV_FREQUENT_CHECK;
3836}
3837
3838void
3839ev_cleanup_stop (EV_P_ ev_cleanup *w)
3840{
3841 clear_pending (EV_A_ (W)w);
3842 if (expect_false (!ev_is_active (w)))
3843 return;
3844
3845 EV_FREQUENT_CHECK;
3846 ev_ref (EV_A);
3847
3848 {
3849 int active = ev_active (w);
3850
3851 cleanups [active - 1] = cleanups [--cleanupcnt];
3852 ev_active (cleanups [active - 1]) = active;
3853 }
3854
3855 ev_stop (EV_A_ (W)w);
3856
3857 EV_FREQUENT_CHECK;
3858}
3859#endif
3860
3243#if EV_ASYNC_ENABLE 3861#if EV_ASYNC_ENABLE
3244void 3862void
3245ev_async_start (EV_P_ ev_async *w) 3863ev_async_start (EV_P_ ev_async *w)
3246{ 3864{
3247 if (expect_false (ev_is_active (w))) 3865 if (expect_false (ev_is_active (w)))
3248 return; 3866 return;
3249 3867
3868 w->sent = 0;
3869
3250 evpipe_init (EV_A); 3870 evpipe_init (EV_A);
3251 3871
3252 EV_FREQUENT_CHECK; 3872 EV_FREQUENT_CHECK;
3253 3873
3254 ev_start (EV_A_ (W)w, ++asynccnt); 3874 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3281 3901
3282void 3902void
3283ev_async_send (EV_P_ ev_async *w) 3903ev_async_send (EV_P_ ev_async *w)
3284{ 3904{
3285 w->sent = 1; 3905 w->sent = 1;
3286 evpipe_write (EV_A_ &gotasync); 3906 evpipe_write (EV_A_ &async_pending);
3287} 3907}
3288#endif 3908#endif
3289 3909
3290/*****************************************************************************/ 3910/*****************************************************************************/
3291 3911
… …
3331{ 3951{
3332 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3952 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3333 3953
3334 if (expect_false (!once)) 3954 if (expect_false (!once))
3335 { 3955 {
3336 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3956 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3337 return; 3957 return;
3338 } 3958 }
3339 3959
3340 once->cb = cb; 3960 once->cb = cb;
3341 once->arg = arg; 3961 once->arg = arg;
… …
3356} 3976}
3357 3977
3358/*****************************************************************************/ 3978/*****************************************************************************/
3359 3979
3360#if EV_WALK_ENABLE 3980#if EV_WALK_ENABLE
3361void 3981void ecb_cold
3362ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 3982ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3363{ 3983{
3364 int i, j; 3984 int i, j;
3365 ev_watcher_list *wl, *wn; 3985 ev_watcher_list *wl, *wn;
3366 3986
… …
3428 if (types & EV_ASYNC) 4048 if (types & EV_ASYNC)
3429 for (i = asynccnt; i--; ) 4049 for (i = asynccnt; i--; )
3430 cb (EV_A_ EV_ASYNC, asyncs [i]); 4050 cb (EV_A_ EV_ASYNC, asyncs [i]);
3431#endif 4051#endif
3432 4052
4053#if EV_PREPARE_ENABLE
3433 if (types & EV_PREPARE) 4054 if (types & EV_PREPARE)
3434 for (i = preparecnt; i--; ) 4055 for (i = preparecnt; i--; )
3435#if EV_EMBED_ENABLE 4056# if EV_EMBED_ENABLE
3436 if (ev_cb (prepares [i]) != embed_prepare_cb) 4057 if (ev_cb (prepares [i]) != embed_prepare_cb)
3437#endif 4058# endif
3438 cb (EV_A_ EV_PREPARE, prepares [i]); 4059 cb (EV_A_ EV_PREPARE, prepares [i]);
4060#endif
3439 4061
4062#if EV_CHECK_ENABLE
3440 if (types & EV_CHECK) 4063 if (types & EV_CHECK)
3441 for (i = checkcnt; i--; ) 4064 for (i = checkcnt; i--; )
3442 cb (EV_A_ EV_CHECK, checks [i]); 4065 cb (EV_A_ EV_CHECK, checks [i]);
4066#endif
3443 4067
4068#if EV_SIGNAL_ENABLE
3444 if (types & EV_SIGNAL) 4069 if (types & EV_SIGNAL)
3445 for (i = 0; i < signalmax; ++i) 4070 for (i = 0; i < EV_NSIG - 1; ++i)
3446 for (wl = signals [i].head; wl; ) 4071 for (wl = signals [i].head; wl; )
3447 { 4072 {
3448 wn = wl->next; 4073 wn = wl->next;
3449 cb (EV_A_ EV_SIGNAL, wl); 4074 cb (EV_A_ EV_SIGNAL, wl);
3450 wl = wn; 4075 wl = wn;
3451 } 4076 }
4077#endif
3452 4078
4079#if EV_CHILD_ENABLE
3453 if (types & EV_CHILD) 4080 if (types & EV_CHILD)
3454 for (i = EV_PID_HASHSIZE; i--; ) 4081 for (i = (EV_PID_HASHSIZE); i--; )
3455 for (wl = childs [i]; wl; ) 4082 for (wl = childs [i]; wl; )
3456 { 4083 {
3457 wn = wl->next; 4084 wn = wl->next;
3458 cb (EV_A_ EV_CHILD, wl); 4085 cb (EV_A_ EV_CHILD, wl);
3459 wl = wn; 4086 wl = wn;
3460 } 4087 }
4088#endif
3461/* EV_STAT 0x00001000 /* stat data changed */ 4089/* EV_STAT 0x00001000 /* stat data changed */
3462/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4090/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3463} 4091}
3464#endif 4092#endif
3465 4093
3466#if EV_MULTIPLICITY 4094#if EV_MULTIPLICITY
3467 #include "ev_wrap.h" 4095 #include "ev_wrap.h"
3468#endif 4096#endif
3469 4097
3470#ifdef __cplusplus 4098EV_CPP(})
3471}
3472#endif
3473 4099

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