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Comparing libev/ev.c (file contents):
Revision 1.297 by root, Fri Jul 10 00:36:21 2009 UTC vs.
Revision 1.381 by root, Mon Jun 27 21:29:35 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009 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
384#endif
385 496
497#if ECB_GCC_VERSION(3,1)
498 #define ecb_attribute(attrlist) __attribute__(attrlist)
499 #define ecb_is_constant(expr) __builtin_constant_p (expr)
500 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
501 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
502#else
503 #define ecb_attribute(attrlist)
504 #define ecb_is_constant(expr) 0
505 #define ecb_expect(expr,value) (expr)
506 #define ecb_prefetch(addr,rw,locality)
507#endif
508
509#define ecb_noinline ecb_attribute ((__noinline__))
510#define ecb_noreturn ecb_attribute ((__noreturn__))
511#define ecb_unused ecb_attribute ((__unused__))
512#define ecb_const ecb_attribute ((__const__))
513#define ecb_pure ecb_attribute ((__pure__))
514
515#if ECB_GCC_VERSION(4,3)
516 #define ecb_artificial ecb_attribute ((__artificial__))
517 #define ecb_hot ecb_attribute ((__hot__))
518 #define ecb_cold ecb_attribute ((__cold__))
519#else
520 #define ecb_artificial
521 #define ecb_hot
522 #define ecb_cold
523#endif
524
525/* put around conditional expressions if you are very sure that the */
526/* expression is mostly true or mostly false. note that these return */
527/* booleans, not the expression. */
386#define expect_false(expr) expect ((expr) != 0, 0) 528#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
387#define expect_true(expr) expect ((expr) != 0, 1) 529#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
530/* ecb.h end */
531
532#define expect_false(cond) ecb_expect_false (cond)
533#define expect_true(cond) ecb_expect_true (cond)
534#define noinline ecb_noinline
535
388#define inline_size static inline 536#define inline_size ecb_inline
389 537
390#if EV_MINIMAL 538#if EV_FEATURE_CODE
539# define inline_speed ecb_inline
540#else
391# define inline_speed static noinline 541# define inline_speed static noinline
392#else
393# define inline_speed static inline
394#endif 542#endif
395 543
396#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 544#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397 545
398#if EV_MINPRI == EV_MAXPRI 546#if EV_MINPRI == EV_MAXPRI
… …
411#define ev_active(w) ((W)(w))->active 559#define ev_active(w) ((W)(w))->active
412#define ev_at(w) ((WT)(w))->at 560#define ev_at(w) ((WT)(w))->at
413 561
414#if EV_USE_REALTIME 562#if EV_USE_REALTIME
415/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 563/* 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 */ 564/* giving it a reasonably high chance of working on typical architectures */
417static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 565static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
418#endif 566#endif
419 567
420#if EV_USE_MONOTONIC 568#if EV_USE_MONOTONIC
421static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 569static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422#endif 570#endif
423 571
572#ifndef EV_FD_TO_WIN32_HANDLE
573# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
574#endif
575#ifndef EV_WIN32_HANDLE_TO_FD
576# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
577#endif
578#ifndef EV_WIN32_CLOSE_FD
579# define EV_WIN32_CLOSE_FD(fd) close (fd)
580#endif
581
424#ifdef _WIN32 582#ifdef _WIN32
425# include "ev_win32.c" 583# include "ev_win32.c"
426#endif 584#endif
427 585
428/*****************************************************************************/ 586/*****************************************************************************/
429 587
588/* define a suitable floor function (only used by periodics atm) */
589
590#if EV_USE_FLOOR
591# include <math.h>
592# define ev_floor(v) floor (v)
593#else
594
595#include <float.h>
596
597/* a floor() replacement function, should be independent of ev_tstamp type */
598static ev_tstamp noinline
599ev_floor (ev_tstamp v)
600{
601 /* the choice of shift factor is not terribly important */
602#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
603 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
604#else
605 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
606#endif
607
608 /* argument too large for an unsigned long? */
609 if (expect_false (v >= shift))
610 {
611 ev_tstamp f;
612
613 if (v == v - 1.)
614 return v; /* very large number */
615
616 f = shift * ev_floor (v * (1. / shift));
617 return f + ev_floor (v - f);
618 }
619
620 /* special treatment for negative args? */
621 if (expect_false (v < 0.))
622 {
623 ev_tstamp f = -ev_floor (-v);
624
625 return f - (f == v ? 0 : 1);
626 }
627
628 /* fits into an unsigned long */
629 return (unsigned long)v;
630}
631
632#endif
633
634/*****************************************************************************/
635
636#ifdef __linux
637# include <sys/utsname.h>
638#endif
639
640static unsigned int noinline ecb_cold
641ev_linux_version (void)
642{
643#ifdef __linux
644 unsigned int v = 0;
645 struct utsname buf;
646 int i;
647 char *p = buf.release;
648
649 if (uname (&buf))
650 return 0;
651
652 for (i = 3+1; --i; )
653 {
654 unsigned int c = 0;
655
656 for (;;)
657 {
658 if (*p >= '0' && *p <= '9')
659 c = c * 10 + *p++ - '0';
660 else
661 {
662 p += *p == '.';
663 break;
664 }
665 }
666
667 v = (v << 8) | c;
668 }
669
670 return v;
671#else
672 return 0;
673#endif
674}
675
676/*****************************************************************************/
677
678#if EV_AVOID_STDIO
679static void noinline ecb_cold
680ev_printerr (const char *msg)
681{
682 write (STDERR_FILENO, msg, strlen (msg));
683}
684#endif
685
430static void (*syserr_cb)(const char *msg); 686static void (*syserr_cb)(const char *msg);
431 687
432void 688void ecb_cold
433ev_set_syserr_cb (void (*cb)(const char *msg)) 689ev_set_syserr_cb (void (*cb)(const char *msg))
434{ 690{
435 syserr_cb = cb; 691 syserr_cb = cb;
436} 692}
437 693
438static void noinline 694static void noinline ecb_cold
439ev_syserr (const char *msg) 695ev_syserr (const char *msg)
440{ 696{
441 if (!msg) 697 if (!msg)
442 msg = "(libev) system error"; 698 msg = "(libev) system error";
443 699
444 if (syserr_cb) 700 if (syserr_cb)
445 syserr_cb (msg); 701 syserr_cb (msg);
446 else 702 else
447 { 703 {
704#if EV_AVOID_STDIO
705 ev_printerr (msg);
706 ev_printerr (": ");
707 ev_printerr (strerror (errno));
708 ev_printerr ("\n");
709#else
448 perror (msg); 710 perror (msg);
711#endif
449 abort (); 712 abort ();
450 } 713 }
451} 714}
452 715
453static void * 716static void *
454ev_realloc_emul (void *ptr, long size) 717ev_realloc_emul (void *ptr, long size)
455{ 718{
719#if __GLIBC__
720 return realloc (ptr, size);
721#else
456 /* some systems, notably openbsd and darwin, fail to properly 722 /* some systems, notably openbsd and darwin, fail to properly
457 * implement realloc (x, 0) (as required by both ansi c-98 and 723 * implement realloc (x, 0) (as required by both ansi c-89 and
458 * the single unix specification, so work around them here. 724 * the single unix specification, so work around them here.
459 */ 725 */
460 726
461 if (size) 727 if (size)
462 return realloc (ptr, size); 728 return realloc (ptr, size);
463 729
464 free (ptr); 730 free (ptr);
465 return 0; 731 return 0;
732#endif
466} 733}
467 734
468static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 735static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
469 736
470void 737void ecb_cold
471ev_set_allocator (void *(*cb)(void *ptr, long size)) 738ev_set_allocator (void *(*cb)(void *ptr, long size))
472{ 739{
473 alloc = cb; 740 alloc = cb;
474} 741}
475 742
… …
478{ 745{
479 ptr = alloc (ptr, size); 746 ptr = alloc (ptr, size);
480 747
481 if (!ptr && size) 748 if (!ptr && size)
482 { 749 {
750#if EV_AVOID_STDIO
751 ev_printerr ("(libev) memory allocation failed, aborting.\n");
752#else
483 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 753 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
754#endif
484 abort (); 755 abort ();
485 } 756 }
486 757
487 return ptr; 758 return ptr;
488} 759}
… …
490#define ev_malloc(size) ev_realloc (0, (size)) 761#define ev_malloc(size) ev_realloc (0, (size))
491#define ev_free(ptr) ev_realloc ((ptr), 0) 762#define ev_free(ptr) ev_realloc ((ptr), 0)
492 763
493/*****************************************************************************/ 764/*****************************************************************************/
494 765
766/* set in reify when reification needed */
767#define EV_ANFD_REIFY 1
768
495/* file descriptor info structure */ 769/* file descriptor info structure */
496typedef struct 770typedef struct
497{ 771{
498 WL head; 772 WL head;
499 unsigned char events; /* the events watched for */ 773 unsigned char events; /* the events watched for */
500 unsigned char reify; /* flag set when this ANFD needs reification */ 774 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
501 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 775 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
502 unsigned char unused; 776 unsigned char unused;
503#if EV_USE_EPOLL 777#if EV_USE_EPOLL
504 unsigned int egen; /* generation counter to counter epoll bugs */ 778 unsigned int egen; /* generation counter to counter epoll bugs */
505#endif 779#endif
506#if EV_SELECT_IS_WINSOCKET 780#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
507 SOCKET handle; 781 SOCKET handle;
782#endif
783#if EV_USE_IOCP
784 OVERLAPPED or, ow;
508#endif 785#endif
509} ANFD; 786} ANFD;
510 787
511/* stores the pending event set for a given watcher */ 788/* stores the pending event set for a given watcher */
512typedef struct 789typedef struct
… …
567 844
568 static int ev_default_loop_ptr; 845 static int ev_default_loop_ptr;
569 846
570#endif 847#endif
571 848
572#if EV_MINIMAL < 2 849#if EV_FEATURE_API
573# define EV_SUSPEND_CB if (expect_false (suspend_cb)) suspend_cb (EV_A)
574# define EV_RESUME_CB if (expect_false (resume_cb )) resume_cb (EV_A) 850# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
851# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
575# define EV_INVOKE_PENDING invoke_cb (EV_A) 852# define EV_INVOKE_PENDING invoke_cb (EV_A)
576#else 853#else
577# define EV_SUSPEND_CB (void)0
578# define EV_RESUME_CB (void)0 854# define EV_RELEASE_CB (void)0
855# define EV_ACQUIRE_CB (void)0
579# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 856# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
580#endif 857#endif
858
859#define EVBREAK_RECURSE 0x80
581 860
582/*****************************************************************************/ 861/*****************************************************************************/
583 862
584#ifndef EV_HAVE_EV_TIME 863#ifndef EV_HAVE_EV_TIME
585ev_tstamp 864ev_tstamp
… …
629 if (delay > 0.) 908 if (delay > 0.)
630 { 909 {
631#if EV_USE_NANOSLEEP 910#if EV_USE_NANOSLEEP
632 struct timespec ts; 911 struct timespec ts;
633 912
634 ts.tv_sec = (time_t)delay; 913 EV_TS_SET (ts, delay);
635 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
636
637 nanosleep (&ts, 0); 914 nanosleep (&ts, 0);
638#elif defined(_WIN32) 915#elif defined(_WIN32)
639 Sleep ((unsigned long)(delay * 1e3)); 916 Sleep ((unsigned long)(delay * 1e3));
640#else 917#else
641 struct timeval tv; 918 struct timeval tv;
642 919
643 tv.tv_sec = (time_t)delay;
644 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
645
646 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 920 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
647 /* somehting not guaranteed by newer posix versions, but guaranteed */ 921 /* something not guaranteed by newer posix versions, but guaranteed */
648 /* by older ones */ 922 /* by older ones */
923 EV_TV_SET (tv, delay);
649 select (0, 0, 0, 0, &tv); 924 select (0, 0, 0, 0, &tv);
650#endif 925#endif
651 } 926 }
652} 927}
653 928
654/*****************************************************************************/ 929/*****************************************************************************/
655 930
656#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 931#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
657 932
658/* find a suitable new size for the given array, */ 933/* find a suitable new size for the given array, */
659/* hopefully by rounding to a ncie-to-malloc size */ 934/* hopefully by rounding to a nice-to-malloc size */
660inline_size int 935inline_size int
661array_nextsize (int elem, int cur, int cnt) 936array_nextsize (int elem, int cur, int cnt)
662{ 937{
663 int ncur = cur + 1; 938 int ncur = cur + 1;
664 939
… …
676 } 951 }
677 952
678 return ncur; 953 return ncur;
679} 954}
680 955
681static noinline void * 956static void * noinline ecb_cold
682array_realloc (int elem, void *base, int *cur, int cnt) 957array_realloc (int elem, void *base, int *cur, int cnt)
683{ 958{
684 *cur = array_nextsize (elem, *cur, cnt); 959 *cur = array_nextsize (elem, *cur, cnt);
685 return ev_realloc (base, elem * *cur); 960 return ev_realloc (base, elem * *cur);
686} 961}
… …
760} 1035}
761 1036
762/*****************************************************************************/ 1037/*****************************************************************************/
763 1038
764inline_speed void 1039inline_speed void
765fd_event (EV_P_ int fd, int revents) 1040fd_event_nocheck (EV_P_ int fd, int revents)
766{ 1041{
767 ANFD *anfd = anfds + fd; 1042 ANFD *anfd = anfds + fd;
768 ev_io *w; 1043 ev_io *w;
769 1044
770 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1045 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
774 if (ev) 1049 if (ev)
775 ev_feed_event (EV_A_ (W)w, ev); 1050 ev_feed_event (EV_A_ (W)w, ev);
776 } 1051 }
777} 1052}
778 1053
1054/* do not submit kernel events for fds that have reify set */
1055/* because that means they changed while we were polling for new events */
1056inline_speed void
1057fd_event (EV_P_ int fd, int revents)
1058{
1059 ANFD *anfd = anfds + fd;
1060
1061 if (expect_true (!anfd->reify))
1062 fd_event_nocheck (EV_A_ fd, revents);
1063}
1064
779void 1065void
780ev_feed_fd_event (EV_P_ int fd, int revents) 1066ev_feed_fd_event (EV_P_ int fd, int revents)
781{ 1067{
782 if (fd >= 0 && fd < anfdmax) 1068 if (fd >= 0 && fd < anfdmax)
783 fd_event (EV_A_ fd, revents); 1069 fd_event_nocheck (EV_A_ fd, revents);
784} 1070}
785 1071
786/* make sure the external fd watch events are in-sync */ 1072/* make sure the external fd watch events are in-sync */
787/* with the kernel/libev internal state */ 1073/* with the kernel/libev internal state */
788inline_size void 1074inline_size void
789fd_reify (EV_P) 1075fd_reify (EV_P)
790{ 1076{
791 int i; 1077 int i;
792 1078
1079#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1080 for (i = 0; i < fdchangecnt; ++i)
1081 {
1082 int fd = fdchanges [i];
1083 ANFD *anfd = anfds + fd;
1084
1085 if (anfd->reify & EV__IOFDSET && anfd->head)
1086 {
1087 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1088
1089 if (handle != anfd->handle)
1090 {
1091 unsigned long arg;
1092
1093 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1094
1095 /* handle changed, but fd didn't - we need to do it in two steps */
1096 backend_modify (EV_A_ fd, anfd->events, 0);
1097 anfd->events = 0;
1098 anfd->handle = handle;
1099 }
1100 }
1101 }
1102#endif
1103
793 for (i = 0; i < fdchangecnt; ++i) 1104 for (i = 0; i < fdchangecnt; ++i)
794 { 1105 {
795 int fd = fdchanges [i]; 1106 int fd = fdchanges [i];
796 ANFD *anfd = anfds + fd; 1107 ANFD *anfd = anfds + fd;
797 ev_io *w; 1108 ev_io *w;
798 1109
799 unsigned char events = 0; 1110 unsigned char o_events = anfd->events;
1111 unsigned char o_reify = anfd->reify;
800 1112
801 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1113 anfd->reify = 0;
802 events |= (unsigned char)w->events;
803 1114
804#if EV_SELECT_IS_WINSOCKET 1115 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
805 if (events)
806 { 1116 {
807 unsigned long arg; 1117 anfd->events = 0;
808 #ifdef EV_FD_TO_WIN32_HANDLE 1118
809 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1119 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
810 #else 1120 anfd->events |= (unsigned char)w->events;
811 anfd->handle = _get_osfhandle (fd); 1121
812 #endif 1122 if (o_events != anfd->events)
813 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1123 o_reify = EV__IOFDSET; /* actually |= */
814 } 1124 }
815#endif
816 1125
817 { 1126 if (o_reify & EV__IOFDSET)
818 unsigned char o_events = anfd->events;
819 unsigned char o_reify = anfd->reify;
820
821 anfd->reify = 0;
822 anfd->events = events;
823
824 if (o_events != events || o_reify & EV__IOFDSET)
825 backend_modify (EV_A_ fd, o_events, events); 1127 backend_modify (EV_A_ fd, o_events, anfd->events);
826 }
827 } 1128 }
828 1129
829 fdchangecnt = 0; 1130 fdchangecnt = 0;
830} 1131}
831 1132
… …
843 fdchanges [fdchangecnt - 1] = fd; 1144 fdchanges [fdchangecnt - 1] = fd;
844 } 1145 }
845} 1146}
846 1147
847/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1148/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
848inline_speed void 1149inline_speed void ecb_cold
849fd_kill (EV_P_ int fd) 1150fd_kill (EV_P_ int fd)
850{ 1151{
851 ev_io *w; 1152 ev_io *w;
852 1153
853 while ((w = (ev_io *)anfds [fd].head)) 1154 while ((w = (ev_io *)anfds [fd].head))
… …
855 ev_io_stop (EV_A_ w); 1156 ev_io_stop (EV_A_ w);
856 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1157 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
857 } 1158 }
858} 1159}
859 1160
860/* check whether the given fd is atcually valid, for error recovery */ 1161/* check whether the given fd is actually valid, for error recovery */
861inline_size int 1162inline_size int ecb_cold
862fd_valid (int fd) 1163fd_valid (int fd)
863{ 1164{
864#ifdef _WIN32 1165#ifdef _WIN32
865 return _get_osfhandle (fd) != -1; 1166 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
866#else 1167#else
867 return fcntl (fd, F_GETFD) != -1; 1168 return fcntl (fd, F_GETFD) != -1;
868#endif 1169#endif
869} 1170}
870 1171
871/* called on EBADF to verify fds */ 1172/* called on EBADF to verify fds */
872static void noinline 1173static void noinline ecb_cold
873fd_ebadf (EV_P) 1174fd_ebadf (EV_P)
874{ 1175{
875 int fd; 1176 int fd;
876 1177
877 for (fd = 0; fd < anfdmax; ++fd) 1178 for (fd = 0; fd < anfdmax; ++fd)
… …
879 if (!fd_valid (fd) && errno == EBADF) 1180 if (!fd_valid (fd) && errno == EBADF)
880 fd_kill (EV_A_ fd); 1181 fd_kill (EV_A_ fd);
881} 1182}
882 1183
883/* called on ENOMEM in select/poll to kill some fds and retry */ 1184/* called on ENOMEM in select/poll to kill some fds and retry */
884static void noinline 1185static void noinline ecb_cold
885fd_enomem (EV_P) 1186fd_enomem (EV_P)
886{ 1187{
887 int fd; 1188 int fd;
888 1189
889 for (fd = anfdmax; fd--; ) 1190 for (fd = anfdmax; fd--; )
890 if (anfds [fd].events) 1191 if (anfds [fd].events)
891 { 1192 {
892 fd_kill (EV_A_ fd); 1193 fd_kill (EV_A_ fd);
893 return; 1194 break;
894 } 1195 }
895} 1196}
896 1197
897/* usually called after fork if backend needs to re-arm all fds from scratch */ 1198/* usually called after fork if backend needs to re-arm all fds from scratch */
898static void noinline 1199static void noinline
… …
903 for (fd = 0; fd < anfdmax; ++fd) 1204 for (fd = 0; fd < anfdmax; ++fd)
904 if (anfds [fd].events) 1205 if (anfds [fd].events)
905 { 1206 {
906 anfds [fd].events = 0; 1207 anfds [fd].events = 0;
907 anfds [fd].emask = 0; 1208 anfds [fd].emask = 0;
908 fd_change (EV_A_ fd, EV__IOFDSET | 1); 1209 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
909 } 1210 }
910} 1211}
911 1212
1213/* used to prepare libev internal fd's */
1214/* this is not fork-safe */
1215inline_speed void
1216fd_intern (int fd)
1217{
1218#ifdef _WIN32
1219 unsigned long arg = 1;
1220 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1221#else
1222 fcntl (fd, F_SETFD, FD_CLOEXEC);
1223 fcntl (fd, F_SETFL, O_NONBLOCK);
1224#endif
1225}
1226
912/*****************************************************************************/ 1227/*****************************************************************************/
913 1228
914/* 1229/*
915 * the heap functions want a real array index. array index 0 uis guaranteed to not 1230 * the heap functions want a real array index. array index 0 is guaranteed to not
916 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1231 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
917 * the branching factor of the d-tree. 1232 * the branching factor of the d-tree.
918 */ 1233 */
919 1234
920/* 1235/*
… …
988 1303
989 for (;;) 1304 for (;;)
990 { 1305 {
991 int c = k << 1; 1306 int c = k << 1;
992 1307
993 if (c > N + HEAP0 - 1) 1308 if (c >= N + HEAP0)
994 break; 1309 break;
995 1310
996 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1311 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
997 ? 1 : 0; 1312 ? 1 : 0;
998 1313
… …
1034 1349
1035/* move an element suitably so it is in a correct place */ 1350/* move an element suitably so it is in a correct place */
1036inline_size void 1351inline_size void
1037adjustheap (ANHE *heap, int N, int k) 1352adjustheap (ANHE *heap, int N, int k)
1038{ 1353{
1039 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1354 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1040 upheap (heap, k); 1355 upheap (heap, k);
1041 else 1356 else
1042 downheap (heap, N, k); 1357 downheap (heap, N, k);
1043} 1358}
1044 1359
… …
1057/*****************************************************************************/ 1372/*****************************************************************************/
1058 1373
1059/* associate signal watchers to a signal signal */ 1374/* associate signal watchers to a signal signal */
1060typedef struct 1375typedef struct
1061{ 1376{
1377 EV_ATOMIC_T pending;
1378#if EV_MULTIPLICITY
1379 EV_P;
1380#endif
1062 WL head; 1381 WL head;
1063 EV_ATOMIC_T gotsig;
1064} ANSIG; 1382} ANSIG;
1065 1383
1066static ANSIG *signals; 1384static ANSIG signals [EV_NSIG - 1];
1067static int signalmax;
1068
1069static EV_ATOMIC_T gotsig;
1070 1385
1071/*****************************************************************************/ 1386/*****************************************************************************/
1072 1387
1073/* used to prepare libev internal fd's */ 1388#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1074/* this is not fork-safe */
1075inline_speed void
1076fd_intern (int fd)
1077{
1078#ifdef _WIN32
1079 unsigned long arg = 1;
1080 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1081#else
1082 fcntl (fd, F_SETFD, FD_CLOEXEC);
1083 fcntl (fd, F_SETFL, O_NONBLOCK);
1084#endif
1085}
1086 1389
1087static void noinline 1390static void noinline ecb_cold
1088evpipe_init (EV_P) 1391evpipe_init (EV_P)
1089{ 1392{
1090 if (!ev_is_active (&pipe_w)) 1393 if (!ev_is_active (&pipe_w))
1091 { 1394 {
1092#if EV_USE_EVENTFD 1395# if EV_USE_EVENTFD
1396 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1397 if (evfd < 0 && errno == EINVAL)
1093 if ((evfd = eventfd (0, 0)) >= 0) 1398 evfd = eventfd (0, 0);
1399
1400 if (evfd >= 0)
1094 { 1401 {
1095 evpipe [0] = -1; 1402 evpipe [0] = -1;
1096 fd_intern (evfd); 1403 fd_intern (evfd); /* doing it twice doesn't hurt */
1097 ev_io_set (&pipe_w, evfd, EV_READ); 1404 ev_io_set (&pipe_w, evfd, EV_READ);
1098 } 1405 }
1099 else 1406 else
1100#endif 1407# endif
1101 { 1408 {
1102 while (pipe (evpipe)) 1409 while (pipe (evpipe))
1103 ev_syserr ("(libev) error creating signal/async pipe"); 1410 ev_syserr ("(libev) error creating signal/async pipe");
1104 1411
1105 fd_intern (evpipe [0]); 1412 fd_intern (evpipe [0]);
… …
1110 ev_io_start (EV_A_ &pipe_w); 1417 ev_io_start (EV_A_ &pipe_w);
1111 ev_unref (EV_A); /* watcher should not keep loop alive */ 1418 ev_unref (EV_A); /* watcher should not keep loop alive */
1112 } 1419 }
1113} 1420}
1114 1421
1115inline_size void 1422inline_speed void
1116evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1423evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1117{ 1424{
1118 if (!*flag) 1425 if (!*flag)
1119 { 1426 {
1120 int old_errno = errno; /* save errno because write might clobber it */
1121
1122 *flag = 1; 1427 *flag = 1;
1123 1428
1429 pipe_write_skipped = 1;
1430
1431 if (pipe_write_wanted)
1432 {
1433 int old_errno;
1434
1435 pipe_write_skipped = 0;
1436
1437 old_errno = errno; /* save errno because write will clobber it */
1438
1124#if EV_USE_EVENTFD 1439#if EV_USE_EVENTFD
1125 if (evfd >= 0) 1440 if (evfd >= 0)
1126 { 1441 {
1127 uint64_t counter = 1; 1442 uint64_t counter = 1;
1128 write (evfd, &counter, sizeof (uint64_t)); 1443 write (evfd, &counter, sizeof (uint64_t));
1444 }
1445 else
1446#endif
1447 {
1448 /* win32 people keep sending patches that change this write() to send() */
1449 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1450 /* so when you think this write should be a send instead, please find out */
1451 /* where your send() is from - it's definitely not the microsoft send, and */
1452 /* tell me. thank you. */
1453 write (evpipe [1], &(evpipe [1]), 1);
1454 }
1455
1456 errno = old_errno;
1129 } 1457 }
1130 else
1131#endif
1132 write (evpipe [1], &old_errno, 1);
1133
1134 errno = old_errno;
1135 } 1458 }
1136} 1459}
1137 1460
1138/* called whenever the libev signal pipe */ 1461/* called whenever the libev signal pipe */
1139/* got some events (signal, async) */ 1462/* got some events (signal, async) */
1140static void 1463static void
1141pipecb (EV_P_ ev_io *iow, int revents) 1464pipecb (EV_P_ ev_io *iow, int revents)
1142{ 1465{
1466 int i;
1467
1468 if (revents & EV_READ)
1469 {
1143#if EV_USE_EVENTFD 1470#if EV_USE_EVENTFD
1144 if (evfd >= 0) 1471 if (evfd >= 0)
1145 { 1472 {
1146 uint64_t counter; 1473 uint64_t counter;
1147 read (evfd, &counter, sizeof (uint64_t)); 1474 read (evfd, &counter, sizeof (uint64_t));
1148 } 1475 }
1149 else 1476 else
1150#endif 1477#endif
1151 { 1478 {
1152 char dummy; 1479 char dummy;
1480 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1153 read (evpipe [0], &dummy, 1); 1481 read (evpipe [0], &dummy, 1);
1482 }
1483 }
1484
1485 pipe_write_skipped = 0;
1486
1487#if EV_SIGNAL_ENABLE
1488 if (sig_pending)
1154 } 1489 {
1490 sig_pending = 0;
1155 1491
1156 if (gotsig && ev_is_default_loop (EV_A)) 1492 for (i = EV_NSIG - 1; i--; )
1157 { 1493 if (expect_false (signals [i].pending))
1158 int signum;
1159 gotsig = 0;
1160
1161 for (signum = signalmax; signum--; )
1162 if (signals [signum].gotsig)
1163 ev_feed_signal_event (EV_A_ signum + 1); 1494 ev_feed_signal_event (EV_A_ i + 1);
1164 } 1495 }
1496#endif
1165 1497
1166#if EV_ASYNC_ENABLE 1498#if EV_ASYNC_ENABLE
1167 if (gotasync) 1499 if (async_pending)
1168 { 1500 {
1169 int i; 1501 async_pending = 0;
1170 gotasync = 0;
1171 1502
1172 for (i = asynccnt; i--; ) 1503 for (i = asynccnt; i--; )
1173 if (asyncs [i]->sent) 1504 if (asyncs [i]->sent)
1174 { 1505 {
1175 asyncs [i]->sent = 0; 1506 asyncs [i]->sent = 0;
… …
1179#endif 1510#endif
1180} 1511}
1181 1512
1182/*****************************************************************************/ 1513/*****************************************************************************/
1183 1514
1515void
1516ev_feed_signal (int signum)
1517{
1518#if EV_MULTIPLICITY
1519 EV_P = signals [signum - 1].loop;
1520
1521 if (!EV_A)
1522 return;
1523#endif
1524
1525 if (!ev_active (&pipe_w))
1526 return;
1527
1528 signals [signum - 1].pending = 1;
1529 evpipe_write (EV_A_ &sig_pending);
1530}
1531
1184static void 1532static void
1185ev_sighandler (int signum) 1533ev_sighandler (int signum)
1186{ 1534{
1187#if EV_MULTIPLICITY
1188 struct ev_loop *loop = &default_loop_struct;
1189#endif
1190
1191#if _WIN32 1535#ifdef _WIN32
1192 signal (signum, ev_sighandler); 1536 signal (signum, ev_sighandler);
1193#endif 1537#endif
1194 1538
1195 signals [signum - 1].gotsig = 1; 1539 ev_feed_signal (signum);
1196 evpipe_write (EV_A_ &gotsig);
1197} 1540}
1198 1541
1199void noinline 1542void noinline
1200ev_feed_signal_event (EV_P_ int signum) 1543ev_feed_signal_event (EV_P_ int signum)
1201{ 1544{
1202 WL w; 1545 WL w;
1203 1546
1547 if (expect_false (signum <= 0 || signum > EV_NSIG))
1548 return;
1549
1550 --signum;
1551
1204#if EV_MULTIPLICITY 1552#if EV_MULTIPLICITY
1205 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1553 /* it is permissible to try to feed a signal to the wrong loop */
1206#endif 1554 /* or, likely more useful, feeding a signal nobody is waiting for */
1207 1555
1208 --signum; 1556 if (expect_false (signals [signum].loop != EV_A))
1209
1210 if (signum < 0 || signum >= signalmax)
1211 return; 1557 return;
1558#endif
1212 1559
1213 signals [signum].gotsig = 0; 1560 signals [signum].pending = 0;
1214 1561
1215 for (w = signals [signum].head; w; w = w->next) 1562 for (w = signals [signum].head; w; w = w->next)
1216 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1563 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1217} 1564}
1218 1565
1566#if EV_USE_SIGNALFD
1567static void
1568sigfdcb (EV_P_ ev_io *iow, int revents)
1569{
1570 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1571
1572 for (;;)
1573 {
1574 ssize_t res = read (sigfd, si, sizeof (si));
1575
1576 /* not ISO-C, as res might be -1, but works with SuS */
1577 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1578 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1579
1580 if (res < (ssize_t)sizeof (si))
1581 break;
1582 }
1583}
1584#endif
1585
1586#endif
1587
1219/*****************************************************************************/ 1588/*****************************************************************************/
1220 1589
1590#if EV_CHILD_ENABLE
1221static WL childs [EV_PID_HASHSIZE]; 1591static WL childs [EV_PID_HASHSIZE];
1222
1223#ifndef _WIN32
1224 1592
1225static ev_signal childev; 1593static ev_signal childev;
1226 1594
1227#ifndef WIFCONTINUED 1595#ifndef WIFCONTINUED
1228# define WIFCONTINUED(status) 0 1596# define WIFCONTINUED(status) 0
… …
1233child_reap (EV_P_ int chain, int pid, int status) 1601child_reap (EV_P_ int chain, int pid, int status)
1234{ 1602{
1235 ev_child *w; 1603 ev_child *w;
1236 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1604 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1237 1605
1238 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1606 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1239 { 1607 {
1240 if ((w->pid == pid || !w->pid) 1608 if ((w->pid == pid || !w->pid)
1241 && (!traced || (w->flags & 1))) 1609 && (!traced || (w->flags & 1)))
1242 { 1610 {
1243 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1611 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1268 /* make sure we are called again until all children have been reaped */ 1636 /* make sure we are called again until all children have been reaped */
1269 /* we need to do it this way so that the callback gets called before we continue */ 1637 /* we need to do it this way so that the callback gets called before we continue */
1270 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1638 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1271 1639
1272 child_reap (EV_A_ pid, pid, status); 1640 child_reap (EV_A_ pid, pid, status);
1273 if (EV_PID_HASHSIZE > 1) 1641 if ((EV_PID_HASHSIZE) > 1)
1274 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1642 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1275} 1643}
1276 1644
1277#endif 1645#endif
1278 1646
1279/*****************************************************************************/ 1647/*****************************************************************************/
1280 1648
1649#if EV_USE_IOCP
1650# include "ev_iocp.c"
1651#endif
1281#if EV_USE_PORT 1652#if EV_USE_PORT
1282# include "ev_port.c" 1653# include "ev_port.c"
1283#endif 1654#endif
1284#if EV_USE_KQUEUE 1655#if EV_USE_KQUEUE
1285# include "ev_kqueue.c" 1656# include "ev_kqueue.c"
… …
1292#endif 1663#endif
1293#if EV_USE_SELECT 1664#if EV_USE_SELECT
1294# include "ev_select.c" 1665# include "ev_select.c"
1295#endif 1666#endif
1296 1667
1297int 1668int ecb_cold
1298ev_version_major (void) 1669ev_version_major (void)
1299{ 1670{
1300 return EV_VERSION_MAJOR; 1671 return EV_VERSION_MAJOR;
1301} 1672}
1302 1673
1303int 1674int ecb_cold
1304ev_version_minor (void) 1675ev_version_minor (void)
1305{ 1676{
1306 return EV_VERSION_MINOR; 1677 return EV_VERSION_MINOR;
1307} 1678}
1308 1679
1309/* return true if we are running with elevated privileges and should ignore env variables */ 1680/* return true if we are running with elevated privileges and should ignore env variables */
1310int inline_size 1681int inline_size ecb_cold
1311enable_secure (void) 1682enable_secure (void)
1312{ 1683{
1313#ifdef _WIN32 1684#ifdef _WIN32
1314 return 0; 1685 return 0;
1315#else 1686#else
1316 return getuid () != geteuid () 1687 return getuid () != geteuid ()
1317 || getgid () != getegid (); 1688 || getgid () != getegid ();
1318#endif 1689#endif
1319} 1690}
1320 1691
1321unsigned int 1692unsigned int ecb_cold
1322ev_supported_backends (void) 1693ev_supported_backends (void)
1323{ 1694{
1324 unsigned int flags = 0; 1695 unsigned int flags = 0;
1325 1696
1326 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1697 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1330 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1701 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1331 1702
1332 return flags; 1703 return flags;
1333} 1704}
1334 1705
1335unsigned int 1706unsigned int ecb_cold
1336ev_recommended_backends (void) 1707ev_recommended_backends (void)
1337{ 1708{
1338 unsigned int flags = ev_supported_backends (); 1709 unsigned int flags = ev_supported_backends ();
1339 1710
1340#ifndef __NetBSD__ 1711#ifndef __NetBSD__
… …
1345#ifdef __APPLE__ 1716#ifdef __APPLE__
1346 /* only select works correctly on that "unix-certified" platform */ 1717 /* only select works correctly on that "unix-certified" platform */
1347 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1718 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1348 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1719 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1349#endif 1720#endif
1721#ifdef __FreeBSD__
1722 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1723#endif
1350 1724
1351 return flags; 1725 return flags;
1352} 1726}
1353 1727
1354unsigned int 1728unsigned int ecb_cold
1355ev_embeddable_backends (void) 1729ev_embeddable_backends (void)
1356{ 1730{
1357 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1731 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1358 1732
1359 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1733 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1360 /* please fix it and tell me how to detect the fix */ 1734 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1361 flags &= ~EVBACKEND_EPOLL; 1735 flags &= ~EVBACKEND_EPOLL;
1362 1736
1363 return flags; 1737 return flags;
1364} 1738}
1365 1739
1366unsigned int 1740unsigned int
1367ev_backend (EV_P) 1741ev_backend (EV_P)
1368{ 1742{
1369 return backend; 1743 return backend;
1370} 1744}
1371 1745
1372#if EV_MINIMAL < 2 1746#if EV_FEATURE_API
1373unsigned int 1747unsigned int
1374ev_loop_count (EV_P) 1748ev_iteration (EV_P)
1375{ 1749{
1376 return loop_count; 1750 return loop_count;
1377} 1751}
1378 1752
1379unsigned int 1753unsigned int
1380ev_loop_depth (EV_P) 1754ev_depth (EV_P)
1381{ 1755{
1382 return loop_depth; 1756 return loop_depth;
1383} 1757}
1384 1758
1385void 1759void
… …
1404ev_userdata (EV_P) 1778ev_userdata (EV_P)
1405{ 1779{
1406 return userdata; 1780 return userdata;
1407} 1781}
1408 1782
1783void
1409void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 1784ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1410{ 1785{
1411 invoke_cb = invoke_pending_cb; 1786 invoke_cb = invoke_pending_cb;
1412} 1787}
1413 1788
1414void ev_set_blocking_cb (EV_P_ void (*suspend_cb_)(EV_P), void (*resume_cb_)(EV_P)) 1789void
1790ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1415{ 1791{
1416 suspend_cb = suspend_cb_; 1792 release_cb = release;
1417 resume_cb = resume_cb_; 1793 acquire_cb = acquire;
1418} 1794}
1419#endif 1795#endif
1420 1796
1421/* initialise a loop structure, must be zero-initialised */ 1797/* initialise a loop structure, must be zero-initialised */
1422static void noinline 1798static void noinline ecb_cold
1423loop_init (EV_P_ unsigned int flags) 1799loop_init (EV_P_ unsigned int flags)
1424{ 1800{
1425 if (!backend) 1801 if (!backend)
1426 { 1802 {
1803 origflags = flags;
1804
1427#if EV_USE_REALTIME 1805#if EV_USE_REALTIME
1428 if (!have_realtime) 1806 if (!have_realtime)
1429 { 1807 {
1430 struct timespec ts; 1808 struct timespec ts;
1431 1809
… …
1442 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1820 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1443 have_monotonic = 1; 1821 have_monotonic = 1;
1444 } 1822 }
1445#endif 1823#endif
1446 1824
1447 ev_rt_now = ev_time ();
1448 mn_now = get_clock ();
1449 now_floor = mn_now;
1450 rtmn_diff = ev_rt_now - mn_now;
1451#if EV_MINIMAL < 2
1452 invoke_cb = ev_invoke_pending;
1453#endif
1454
1455 io_blocktime = 0.;
1456 timeout_blocktime = 0.;
1457 backend = 0;
1458 backend_fd = -1;
1459 gotasync = 0;
1460#if EV_USE_INOTIFY
1461 fs_fd = -2;
1462#endif
1463
1464 /* pid check not overridable via env */ 1825 /* pid check not overridable via env */
1465#ifndef _WIN32 1826#ifndef _WIN32
1466 if (flags & EVFLAG_FORKCHECK) 1827 if (flags & EVFLAG_FORKCHECK)
1467 curpid = getpid (); 1828 curpid = getpid ();
1468#endif 1829#endif
… …
1470 if (!(flags & EVFLAG_NOENV) 1831 if (!(flags & EVFLAG_NOENV)
1471 && !enable_secure () 1832 && !enable_secure ()
1472 && getenv ("LIBEV_FLAGS")) 1833 && getenv ("LIBEV_FLAGS"))
1473 flags = atoi (getenv ("LIBEV_FLAGS")); 1834 flags = atoi (getenv ("LIBEV_FLAGS"));
1474 1835
1475 if (!(flags & 0x0000ffffU)) 1836 ev_rt_now = ev_time ();
1837 mn_now = get_clock ();
1838 now_floor = mn_now;
1839 rtmn_diff = ev_rt_now - mn_now;
1840#if EV_FEATURE_API
1841 invoke_cb = ev_invoke_pending;
1842#endif
1843
1844 io_blocktime = 0.;
1845 timeout_blocktime = 0.;
1846 backend = 0;
1847 backend_fd = -1;
1848 sig_pending = 0;
1849#if EV_ASYNC_ENABLE
1850 async_pending = 0;
1851#endif
1852 pipe_write_skipped = 0;
1853 pipe_write_wanted = 0;
1854#if EV_USE_INOTIFY
1855 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1856#endif
1857#if EV_USE_SIGNALFD
1858 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1859#endif
1860
1861 if (!(flags & EVBACKEND_MASK))
1476 flags |= ev_recommended_backends (); 1862 flags |= ev_recommended_backends ();
1477 1863
1864#if EV_USE_IOCP
1865 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1866#endif
1478#if EV_USE_PORT 1867#if EV_USE_PORT
1479 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1868 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1480#endif 1869#endif
1481#if EV_USE_KQUEUE 1870#if EV_USE_KQUEUE
1482 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1871 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1491 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1880 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1492#endif 1881#endif
1493 1882
1494 ev_prepare_init (&pending_w, pendingcb); 1883 ev_prepare_init (&pending_w, pendingcb);
1495 1884
1885#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1496 ev_init (&pipe_w, pipecb); 1886 ev_init (&pipe_w, pipecb);
1497 ev_set_priority (&pipe_w, EV_MAXPRI); 1887 ev_set_priority (&pipe_w, EV_MAXPRI);
1888#endif
1498 } 1889 }
1499} 1890}
1500 1891
1501/* free up a loop structure */ 1892/* free up a loop structure */
1502static void noinline 1893void ecb_cold
1503loop_destroy (EV_P) 1894ev_loop_destroy (EV_P)
1504{ 1895{
1505 int i; 1896 int i;
1506 1897
1898#if EV_MULTIPLICITY
1899 /* mimic free (0) */
1900 if (!EV_A)
1901 return;
1902#endif
1903
1904#if EV_CLEANUP_ENABLE
1905 /* queue cleanup watchers (and execute them) */
1906 if (expect_false (cleanupcnt))
1907 {
1908 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1909 EV_INVOKE_PENDING;
1910 }
1911#endif
1912
1913#if EV_CHILD_ENABLE
1914 if (ev_is_active (&childev))
1915 {
1916 ev_ref (EV_A); /* child watcher */
1917 ev_signal_stop (EV_A_ &childev);
1918 }
1919#endif
1920
1507 if (ev_is_active (&pipe_w)) 1921 if (ev_is_active (&pipe_w))
1508 { 1922 {
1509 ev_ref (EV_A); /* signal watcher */ 1923 /*ev_ref (EV_A);*/
1510 ev_io_stop (EV_A_ &pipe_w); 1924 /*ev_io_stop (EV_A_ &pipe_w);*/
1511 1925
1512#if EV_USE_EVENTFD 1926#if EV_USE_EVENTFD
1513 if (evfd >= 0) 1927 if (evfd >= 0)
1514 close (evfd); 1928 close (evfd);
1515#endif 1929#endif
1516 1930
1517 if (evpipe [0] >= 0) 1931 if (evpipe [0] >= 0)
1518 { 1932 {
1519 close (evpipe [0]); 1933 EV_WIN32_CLOSE_FD (evpipe [0]);
1520 close (evpipe [1]); 1934 EV_WIN32_CLOSE_FD (evpipe [1]);
1521 } 1935 }
1522 } 1936 }
1937
1938#if EV_USE_SIGNALFD
1939 if (ev_is_active (&sigfd_w))
1940 close (sigfd);
1941#endif
1523 1942
1524#if EV_USE_INOTIFY 1943#if EV_USE_INOTIFY
1525 if (fs_fd >= 0) 1944 if (fs_fd >= 0)
1526 close (fs_fd); 1945 close (fs_fd);
1527#endif 1946#endif
1528 1947
1529 if (backend_fd >= 0) 1948 if (backend_fd >= 0)
1530 close (backend_fd); 1949 close (backend_fd);
1531 1950
1951#if EV_USE_IOCP
1952 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1953#endif
1532#if EV_USE_PORT 1954#if EV_USE_PORT
1533 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1955 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1534#endif 1956#endif
1535#if EV_USE_KQUEUE 1957#if EV_USE_KQUEUE
1536 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1958 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1551#if EV_IDLE_ENABLE 1973#if EV_IDLE_ENABLE
1552 array_free (idle, [i]); 1974 array_free (idle, [i]);
1553#endif 1975#endif
1554 } 1976 }
1555 1977
1556 ev_free (anfds); anfdmax = 0; 1978 ev_free (anfds); anfds = 0; anfdmax = 0;
1557 1979
1558 /* have to use the microsoft-never-gets-it-right macro */ 1980 /* have to use the microsoft-never-gets-it-right macro */
1559 array_free (rfeed, EMPTY); 1981 array_free (rfeed, EMPTY);
1560 array_free (fdchange, EMPTY); 1982 array_free (fdchange, EMPTY);
1561 array_free (timer, EMPTY); 1983 array_free (timer, EMPTY);
… …
1563 array_free (periodic, EMPTY); 1985 array_free (periodic, EMPTY);
1564#endif 1986#endif
1565#if EV_FORK_ENABLE 1987#if EV_FORK_ENABLE
1566 array_free (fork, EMPTY); 1988 array_free (fork, EMPTY);
1567#endif 1989#endif
1990#if EV_CLEANUP_ENABLE
1991 array_free (cleanup, EMPTY);
1992#endif
1568 array_free (prepare, EMPTY); 1993 array_free (prepare, EMPTY);
1569 array_free (check, EMPTY); 1994 array_free (check, EMPTY);
1570#if EV_ASYNC_ENABLE 1995#if EV_ASYNC_ENABLE
1571 array_free (async, EMPTY); 1996 array_free (async, EMPTY);
1572#endif 1997#endif
1573 1998
1574 backend = 0; 1999 backend = 0;
2000
2001#if EV_MULTIPLICITY
2002 if (ev_is_default_loop (EV_A))
2003#endif
2004 ev_default_loop_ptr = 0;
2005#if EV_MULTIPLICITY
2006 else
2007 ev_free (EV_A);
2008#endif
1575} 2009}
1576 2010
1577#if EV_USE_INOTIFY 2011#if EV_USE_INOTIFY
1578inline_size void infy_fork (EV_P); 2012inline_size void infy_fork (EV_P);
1579#endif 2013#endif
… …
1594 infy_fork (EV_A); 2028 infy_fork (EV_A);
1595#endif 2029#endif
1596 2030
1597 if (ev_is_active (&pipe_w)) 2031 if (ev_is_active (&pipe_w))
1598 { 2032 {
1599 /* this "locks" the handlers against writing to the pipe */ 2033 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1600 /* while we modify the fd vars */
1601 gotsig = 1;
1602#if EV_ASYNC_ENABLE
1603 gotasync = 1;
1604#endif
1605 2034
1606 ev_ref (EV_A); 2035 ev_ref (EV_A);
1607 ev_io_stop (EV_A_ &pipe_w); 2036 ev_io_stop (EV_A_ &pipe_w);
1608 2037
1609#if EV_USE_EVENTFD 2038#if EV_USE_EVENTFD
… …
1611 close (evfd); 2040 close (evfd);
1612#endif 2041#endif
1613 2042
1614 if (evpipe [0] >= 0) 2043 if (evpipe [0] >= 0)
1615 { 2044 {
1616 close (evpipe [0]); 2045 EV_WIN32_CLOSE_FD (evpipe [0]);
1617 close (evpipe [1]); 2046 EV_WIN32_CLOSE_FD (evpipe [1]);
1618 } 2047 }
1619 2048
2049#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1620 evpipe_init (EV_A); 2050 evpipe_init (EV_A);
1621 /* now iterate over everything, in case we missed something */ 2051 /* now iterate over everything, in case we missed something */
1622 pipecb (EV_A_ &pipe_w, EV_READ); 2052 pipecb (EV_A_ &pipe_w, EV_READ);
2053#endif
1623 } 2054 }
1624 2055
1625 postfork = 0; 2056 postfork = 0;
1626} 2057}
1627 2058
1628#if EV_MULTIPLICITY 2059#if EV_MULTIPLICITY
1629 2060
1630struct ev_loop * 2061struct ev_loop * ecb_cold
1631ev_loop_new (unsigned int flags) 2062ev_loop_new (unsigned int flags)
1632{ 2063{
1633 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2064 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1634 2065
1635 memset (loop, 0, sizeof (struct ev_loop)); 2066 memset (EV_A, 0, sizeof (struct ev_loop));
1636
1637 loop_init (EV_A_ flags); 2067 loop_init (EV_A_ flags);
1638 2068
1639 if (ev_backend (EV_A)) 2069 if (ev_backend (EV_A))
1640 return loop; 2070 return EV_A;
1641 2071
2072 ev_free (EV_A);
1642 return 0; 2073 return 0;
1643} 2074}
1644 2075
1645void
1646ev_loop_destroy (EV_P)
1647{
1648 loop_destroy (EV_A);
1649 ev_free (loop);
1650}
1651
1652void
1653ev_loop_fork (EV_P)
1654{
1655 postfork = 1; /* must be in line with ev_default_fork */
1656}
1657#endif /* multiplicity */ 2076#endif /* multiplicity */
1658 2077
1659#if EV_VERIFY 2078#if EV_VERIFY
1660static void noinline 2079static void noinline ecb_cold
1661verify_watcher (EV_P_ W w) 2080verify_watcher (EV_P_ W w)
1662{ 2081{
1663 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2082 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1664 2083
1665 if (w->pending) 2084 if (w->pending)
1666 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2085 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1667} 2086}
1668 2087
1669static void noinline 2088static void noinline ecb_cold
1670verify_heap (EV_P_ ANHE *heap, int N) 2089verify_heap (EV_P_ ANHE *heap, int N)
1671{ 2090{
1672 int i; 2091 int i;
1673 2092
1674 for (i = HEAP0; i < N + HEAP0; ++i) 2093 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1679 2098
1680 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2099 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1681 } 2100 }
1682} 2101}
1683 2102
1684static void noinline 2103static void noinline ecb_cold
1685array_verify (EV_P_ W *ws, int cnt) 2104array_verify (EV_P_ W *ws, int cnt)
1686{ 2105{
1687 while (cnt--) 2106 while (cnt--)
1688 { 2107 {
1689 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2108 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1690 verify_watcher (EV_A_ ws [cnt]); 2109 verify_watcher (EV_A_ ws [cnt]);
1691 } 2110 }
1692} 2111}
1693#endif 2112#endif
1694 2113
1695#if EV_MINIMAL < 2 2114#if EV_FEATURE_API
1696void 2115void ecb_cold
1697ev_loop_verify (EV_P) 2116ev_verify (EV_P)
1698{ 2117{
1699#if EV_VERIFY 2118#if EV_VERIFY
1700 int i; 2119 int i;
1701 WL w; 2120 WL w;
1702 2121
… …
1736#if EV_FORK_ENABLE 2155#if EV_FORK_ENABLE
1737 assert (forkmax >= forkcnt); 2156 assert (forkmax >= forkcnt);
1738 array_verify (EV_A_ (W *)forks, forkcnt); 2157 array_verify (EV_A_ (W *)forks, forkcnt);
1739#endif 2158#endif
1740 2159
2160#if EV_CLEANUP_ENABLE
2161 assert (cleanupmax >= cleanupcnt);
2162 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2163#endif
2164
1741#if EV_ASYNC_ENABLE 2165#if EV_ASYNC_ENABLE
1742 assert (asyncmax >= asynccnt); 2166 assert (asyncmax >= asynccnt);
1743 array_verify (EV_A_ (W *)asyncs, asynccnt); 2167 array_verify (EV_A_ (W *)asyncs, asynccnt);
1744#endif 2168#endif
1745 2169
2170#if EV_PREPARE_ENABLE
1746 assert (preparemax >= preparecnt); 2171 assert (preparemax >= preparecnt);
1747 array_verify (EV_A_ (W *)prepares, preparecnt); 2172 array_verify (EV_A_ (W *)prepares, preparecnt);
2173#endif
1748 2174
2175#if EV_CHECK_ENABLE
1749 assert (checkmax >= checkcnt); 2176 assert (checkmax >= checkcnt);
1750 array_verify (EV_A_ (W *)checks, checkcnt); 2177 array_verify (EV_A_ (W *)checks, checkcnt);
2178#endif
1751 2179
1752# if 0 2180# if 0
2181#if EV_CHILD_ENABLE
1753 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2182 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1754 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2183 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2184#endif
1755# endif 2185# endif
1756#endif 2186#endif
1757} 2187}
1758#endif 2188#endif
1759 2189
1760#if EV_MULTIPLICITY 2190#if EV_MULTIPLICITY
1761struct ev_loop * 2191struct ev_loop * ecb_cold
1762ev_default_loop_init (unsigned int flags)
1763#else 2192#else
1764int 2193int
2194#endif
1765ev_default_loop (unsigned int flags) 2195ev_default_loop (unsigned int flags)
1766#endif
1767{ 2196{
1768 if (!ev_default_loop_ptr) 2197 if (!ev_default_loop_ptr)
1769 { 2198 {
1770#if EV_MULTIPLICITY 2199#if EV_MULTIPLICITY
1771 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2200 EV_P = ev_default_loop_ptr = &default_loop_struct;
1772#else 2201#else
1773 ev_default_loop_ptr = 1; 2202 ev_default_loop_ptr = 1;
1774#endif 2203#endif
1775 2204
1776 loop_init (EV_A_ flags); 2205 loop_init (EV_A_ flags);
1777 2206
1778 if (ev_backend (EV_A)) 2207 if (ev_backend (EV_A))
1779 { 2208 {
1780#ifndef _WIN32 2209#if EV_CHILD_ENABLE
1781 ev_signal_init (&childev, childcb, SIGCHLD); 2210 ev_signal_init (&childev, childcb, SIGCHLD);
1782 ev_set_priority (&childev, EV_MAXPRI); 2211 ev_set_priority (&childev, EV_MAXPRI);
1783 ev_signal_start (EV_A_ &childev); 2212 ev_signal_start (EV_A_ &childev);
1784 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2213 ev_unref (EV_A); /* child watcher should not keep loop alive */
1785#endif 2214#endif
… …
1790 2219
1791 return ev_default_loop_ptr; 2220 return ev_default_loop_ptr;
1792} 2221}
1793 2222
1794void 2223void
1795ev_default_destroy (void) 2224ev_loop_fork (EV_P)
1796{ 2225{
1797#if EV_MULTIPLICITY
1798 struct ev_loop *loop = ev_default_loop_ptr;
1799#endif
1800
1801 ev_default_loop_ptr = 0;
1802
1803#ifndef _WIN32
1804 ev_ref (EV_A); /* child watcher */
1805 ev_signal_stop (EV_A_ &childev);
1806#endif
1807
1808 loop_destroy (EV_A);
1809}
1810
1811void
1812ev_default_fork (void)
1813{
1814#if EV_MULTIPLICITY
1815 struct ev_loop *loop = ev_default_loop_ptr;
1816#endif
1817
1818 postfork = 1; /* must be in line with ev_loop_fork */ 2226 postfork = 1; /* must be in line with ev_default_fork */
1819} 2227}
1820 2228
1821/*****************************************************************************/ 2229/*****************************************************************************/
1822 2230
1823void 2231void
1824ev_invoke (EV_P_ void *w, int revents) 2232ev_invoke (EV_P_ void *w, int revents)
1825{ 2233{
1826 EV_CB_INVOKE ((W)w, revents); 2234 EV_CB_INVOKE ((W)w, revents);
2235}
2236
2237unsigned int
2238ev_pending_count (EV_P)
2239{
2240 int pri;
2241 unsigned int count = 0;
2242
2243 for (pri = NUMPRI; pri--; )
2244 count += pendingcnt [pri];
2245
2246 return count;
1827} 2247}
1828 2248
1829void noinline 2249void noinline
1830ev_invoke_pending (EV_P) 2250ev_invoke_pending (EV_P)
1831{ 2251{
… …
1833 2253
1834 for (pri = NUMPRI; pri--; ) 2254 for (pri = NUMPRI; pri--; )
1835 while (pendingcnt [pri]) 2255 while (pendingcnt [pri])
1836 { 2256 {
1837 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2257 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1838
1839 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1840 /* ^ this is no longer true, as pending_w could be here */
1841 2258
1842 p->w->pending = 0; 2259 p->w->pending = 0;
1843 EV_CB_INVOKE (p->w, p->events); 2260 EV_CB_INVOKE (p->w, p->events);
1844 EV_FREQUENT_CHECK; 2261 EV_FREQUENT_CHECK;
1845 } 2262 }
… …
1902 EV_FREQUENT_CHECK; 2319 EV_FREQUENT_CHECK;
1903 feed_reverse (EV_A_ (W)w); 2320 feed_reverse (EV_A_ (W)w);
1904 } 2321 }
1905 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2322 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1906 2323
1907 feed_reverse_done (EV_A_ EV_TIMEOUT); 2324 feed_reverse_done (EV_A_ EV_TIMER);
1908 } 2325 }
1909} 2326}
1910 2327
1911#if EV_PERIODIC_ENABLE 2328#if EV_PERIODIC_ENABLE
2329
2330static void noinline
2331periodic_recalc (EV_P_ ev_periodic *w)
2332{
2333 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2334 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2335
2336 /* the above almost always errs on the low side */
2337 while (at <= ev_rt_now)
2338 {
2339 ev_tstamp nat = at + w->interval;
2340
2341 /* when resolution fails us, we use ev_rt_now */
2342 if (expect_false (nat == at))
2343 {
2344 at = ev_rt_now;
2345 break;
2346 }
2347
2348 at = nat;
2349 }
2350
2351 ev_at (w) = at;
2352}
2353
1912/* make periodics pending */ 2354/* make periodics pending */
1913inline_size void 2355inline_size void
1914periodics_reify (EV_P) 2356periodics_reify (EV_P)
1915{ 2357{
1916 EV_FREQUENT_CHECK; 2358 EV_FREQUENT_CHECK;
… …
1935 ANHE_at_cache (periodics [HEAP0]); 2377 ANHE_at_cache (periodics [HEAP0]);
1936 downheap (periodics, periodiccnt, HEAP0); 2378 downheap (periodics, periodiccnt, HEAP0);
1937 } 2379 }
1938 else if (w->interval) 2380 else if (w->interval)
1939 { 2381 {
1940 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2382 periodic_recalc (EV_A_ w);
1941 /* if next trigger time is not sufficiently in the future, put it there */
1942 /* this might happen because of floating point inexactness */
1943 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1944 {
1945 ev_at (w) += w->interval;
1946
1947 /* if interval is unreasonably low we might still have a time in the past */
1948 /* so correct this. this will make the periodic very inexact, but the user */
1949 /* has effectively asked to get triggered more often than possible */
1950 if (ev_at (w) < ev_rt_now)
1951 ev_at (w) = ev_rt_now;
1952 }
1953
1954 ANHE_at_cache (periodics [HEAP0]); 2383 ANHE_at_cache (periodics [HEAP0]);
1955 downheap (periodics, periodiccnt, HEAP0); 2384 downheap (periodics, periodiccnt, HEAP0);
1956 } 2385 }
1957 else 2386 else
1958 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2387 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
1965 feed_reverse_done (EV_A_ EV_PERIODIC); 2394 feed_reverse_done (EV_A_ EV_PERIODIC);
1966 } 2395 }
1967} 2396}
1968 2397
1969/* simply recalculate all periodics */ 2398/* simply recalculate all periodics */
1970/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2399/* TODO: maybe ensure that at least one event happens when jumping forward? */
1971static void noinline 2400static void noinline ecb_cold
1972periodics_reschedule (EV_P) 2401periodics_reschedule (EV_P)
1973{ 2402{
1974 int i; 2403 int i;
1975 2404
1976 /* adjust periodics after time jump */ 2405 /* adjust periodics after time jump */
… …
1979 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2408 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1980 2409
1981 if (w->reschedule_cb) 2410 if (w->reschedule_cb)
1982 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2411 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1983 else if (w->interval) 2412 else if (w->interval)
1984 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2413 periodic_recalc (EV_A_ w);
1985 2414
1986 ANHE_at_cache (periodics [i]); 2415 ANHE_at_cache (periodics [i]);
1987 } 2416 }
1988 2417
1989 reheap (periodics, periodiccnt); 2418 reheap (periodics, periodiccnt);
1990} 2419}
1991#endif 2420#endif
1992 2421
1993/* adjust all timers by a given offset */ 2422/* adjust all timers by a given offset */
1994static void noinline 2423static void noinline ecb_cold
1995timers_reschedule (EV_P_ ev_tstamp adjust) 2424timers_reschedule (EV_P_ ev_tstamp adjust)
1996{ 2425{
1997 int i; 2426 int i;
1998 2427
1999 for (i = 0; i < timercnt; ++i) 2428 for (i = 0; i < timercnt; ++i)
… …
2003 ANHE_at_cache (*he); 2432 ANHE_at_cache (*he);
2004 } 2433 }
2005} 2434}
2006 2435
2007/* fetch new monotonic and realtime times from the kernel */ 2436/* fetch new monotonic and realtime times from the kernel */
2008/* also detetc if there was a timejump, and act accordingly */ 2437/* also detect if there was a timejump, and act accordingly */
2009inline_speed void 2438inline_speed void
2010time_update (EV_P_ ev_tstamp max_block) 2439time_update (EV_P_ ev_tstamp max_block)
2011{ 2440{
2012#if EV_USE_MONOTONIC 2441#if EV_USE_MONOTONIC
2013 if (expect_true (have_monotonic)) 2442 if (expect_true (have_monotonic))
… …
2036 * doesn't hurt either as we only do this on time-jumps or 2465 * doesn't hurt either as we only do this on time-jumps or
2037 * in the unlikely event of having been preempted here. 2466 * in the unlikely event of having been preempted here.
2038 */ 2467 */
2039 for (i = 4; --i; ) 2468 for (i = 4; --i; )
2040 { 2469 {
2470 ev_tstamp diff;
2041 rtmn_diff = ev_rt_now - mn_now; 2471 rtmn_diff = ev_rt_now - mn_now;
2042 2472
2473 diff = odiff - rtmn_diff;
2474
2043 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2475 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2044 return; /* all is well */ 2476 return; /* all is well */
2045 2477
2046 ev_rt_now = ev_time (); 2478 ev_rt_now = ev_time ();
2047 mn_now = get_clock (); 2479 mn_now = get_clock ();
2048 now_floor = mn_now; 2480 now_floor = mn_now;
… …
2071 mn_now = ev_rt_now; 2503 mn_now = ev_rt_now;
2072 } 2504 }
2073} 2505}
2074 2506
2075void 2507void
2076ev_loop (EV_P_ int flags) 2508ev_run (EV_P_ int flags)
2077{ 2509{
2078#if EV_MINIMAL < 2 2510#if EV_FEATURE_API
2079 ++loop_depth; 2511 ++loop_depth;
2080#endif 2512#endif
2081 2513
2514 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2515
2082 loop_done = EVUNLOOP_CANCEL; 2516 loop_done = EVBREAK_CANCEL;
2083 2517
2084 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2518 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2085 2519
2086 do 2520 do
2087 { 2521 {
2088#if EV_VERIFY >= 2 2522#if EV_VERIFY >= 2
2089 ev_loop_verify (EV_A); 2523 ev_verify (EV_A);
2090#endif 2524#endif
2091 2525
2092#ifndef _WIN32 2526#ifndef _WIN32
2093 if (expect_false (curpid)) /* penalise the forking check even more */ 2527 if (expect_false (curpid)) /* penalise the forking check even more */
2094 if (expect_false (getpid () != curpid)) 2528 if (expect_false (getpid () != curpid))
… …
2106 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2540 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2107 EV_INVOKE_PENDING; 2541 EV_INVOKE_PENDING;
2108 } 2542 }
2109#endif 2543#endif
2110 2544
2545#if EV_PREPARE_ENABLE
2111 /* queue prepare watchers (and execute them) */ 2546 /* queue prepare watchers (and execute them) */
2112 if (expect_false (preparecnt)) 2547 if (expect_false (preparecnt))
2113 { 2548 {
2114 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2549 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2115 EV_INVOKE_PENDING; 2550 EV_INVOKE_PENDING;
2116 } 2551 }
2552#endif
2553
2554 if (expect_false (loop_done))
2555 break;
2117 2556
2118 /* we might have forked, so reify kernel state if necessary */ 2557 /* we might have forked, so reify kernel state if necessary */
2119 if (expect_false (postfork)) 2558 if (expect_false (postfork))
2120 loop_fork (EV_A); 2559 loop_fork (EV_A);
2121 2560
… …
2125 /* calculate blocking time */ 2564 /* calculate blocking time */
2126 { 2565 {
2127 ev_tstamp waittime = 0.; 2566 ev_tstamp waittime = 0.;
2128 ev_tstamp sleeptime = 0.; 2567 ev_tstamp sleeptime = 0.;
2129 2568
2569 /* remember old timestamp for io_blocktime calculation */
2570 ev_tstamp prev_mn_now = mn_now;
2571
2572 /* update time to cancel out callback processing overhead */
2573 time_update (EV_A_ 1e100);
2574
2575 /* from now on, we want a pipe-wake-up */
2576 pipe_write_wanted = 1;
2577
2130 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2578 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2131 { 2579 {
2132 /* remember old timestamp for io_blocktime calculation */
2133 ev_tstamp prev_mn_now = mn_now;
2134
2135 /* update time to cancel out callback processing overhead */
2136 time_update (EV_A_ 1e100);
2137
2138 waittime = MAX_BLOCKTIME; 2580 waittime = MAX_BLOCKTIME;
2139 2581
2140 if (timercnt) 2582 if (timercnt)
2141 { 2583 {
2142 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2584 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2143 if (waittime > to) waittime = to; 2585 if (waittime > to) waittime = to;
2144 } 2586 }
2145 2587
2146#if EV_PERIODIC_ENABLE 2588#if EV_PERIODIC_ENABLE
2147 if (periodiccnt) 2589 if (periodiccnt)
2148 { 2590 {
2149 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2591 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2150 if (waittime > to) waittime = to; 2592 if (waittime > to) waittime = to;
2151 } 2593 }
2152#endif 2594#endif
2153 2595
2154 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2596 /* don't let timeouts decrease the waittime below timeout_blocktime */
2155 if (expect_false (waittime < timeout_blocktime)) 2597 if (expect_false (waittime < timeout_blocktime))
2156 waittime = timeout_blocktime; 2598 waittime = timeout_blocktime;
2599
2600 /* at this point, we NEED to wait, so we have to ensure */
2601 /* to pass a minimum nonzero value to the backend */
2602 if (expect_false (waittime < backend_mintime))
2603 waittime = backend_mintime;
2157 2604
2158 /* extra check because io_blocktime is commonly 0 */ 2605 /* extra check because io_blocktime is commonly 0 */
2159 if (expect_false (io_blocktime)) 2606 if (expect_false (io_blocktime))
2160 { 2607 {
2161 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2608 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2162 2609
2163 if (sleeptime > waittime - backend_fudge) 2610 if (sleeptime > waittime - backend_mintime)
2164 sleeptime = waittime - backend_fudge; 2611 sleeptime = waittime - backend_mintime;
2165 2612
2166 if (expect_true (sleeptime > 0.)) 2613 if (expect_true (sleeptime > 0.))
2167 { 2614 {
2168 ev_sleep (sleeptime); 2615 ev_sleep (sleeptime);
2169 waittime -= sleeptime; 2616 waittime -= sleeptime;
2170 } 2617 }
2171 } 2618 }
2172 } 2619 }
2173 2620
2174#if EV_MINIMAL < 2 2621#if EV_FEATURE_API
2175 ++loop_count; 2622 ++loop_count;
2176#endif 2623#endif
2624 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2177 backend_poll (EV_A_ waittime); 2625 backend_poll (EV_A_ waittime);
2626 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2627
2628 pipe_write_wanted = 0;
2629
2630 if (pipe_write_skipped)
2631 {
2632 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2633 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2634 }
2635
2178 2636
2179 /* update ev_rt_now, do magic */ 2637 /* update ev_rt_now, do magic */
2180 time_update (EV_A_ waittime + sleeptime); 2638 time_update (EV_A_ waittime + sleeptime);
2181 } 2639 }
2182 2640
… …
2189#if EV_IDLE_ENABLE 2647#if EV_IDLE_ENABLE
2190 /* queue idle watchers unless other events are pending */ 2648 /* queue idle watchers unless other events are pending */
2191 idle_reify (EV_A); 2649 idle_reify (EV_A);
2192#endif 2650#endif
2193 2651
2652#if EV_CHECK_ENABLE
2194 /* queue check watchers, to be executed first */ 2653 /* queue check watchers, to be executed first */
2195 if (expect_false (checkcnt)) 2654 if (expect_false (checkcnt))
2196 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2655 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2656#endif
2197 2657
2198 EV_INVOKE_PENDING; 2658 EV_INVOKE_PENDING;
2199 } 2659 }
2200 while (expect_true ( 2660 while (expect_true (
2201 activecnt 2661 activecnt
2202 && !loop_done 2662 && !loop_done
2203 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2663 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2204 )); 2664 ));
2205 2665
2206 if (loop_done == EVUNLOOP_ONE) 2666 if (loop_done == EVBREAK_ONE)
2207 loop_done = EVUNLOOP_CANCEL; 2667 loop_done = EVBREAK_CANCEL;
2208 2668
2209#if EV_MINIMAL < 2 2669#if EV_FEATURE_API
2210 --loop_depth; 2670 --loop_depth;
2211#endif 2671#endif
2212} 2672}
2213 2673
2214void 2674void
2215ev_unloop (EV_P_ int how) 2675ev_break (EV_P_ int how)
2216{ 2676{
2217 loop_done = how; 2677 loop_done = how;
2218} 2678}
2219 2679
2220void 2680void
… …
2267inline_size void 2727inline_size void
2268wlist_del (WL *head, WL elem) 2728wlist_del (WL *head, WL elem)
2269{ 2729{
2270 while (*head) 2730 while (*head)
2271 { 2731 {
2272 if (*head == elem) 2732 if (expect_true (*head == elem))
2273 { 2733 {
2274 *head = elem->next; 2734 *head = elem->next;
2275 return; 2735 break;
2276 } 2736 }
2277 2737
2278 head = &(*head)->next; 2738 head = &(*head)->next;
2279 } 2739 }
2280} 2740}
… …
2340 2800
2341 if (expect_false (ev_is_active (w))) 2801 if (expect_false (ev_is_active (w)))
2342 return; 2802 return;
2343 2803
2344 assert (("libev: ev_io_start called with negative fd", fd >= 0)); 2804 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2345 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); 2805 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2346 2806
2347 EV_FREQUENT_CHECK; 2807 EV_FREQUENT_CHECK;
2348 2808
2349 ev_start (EV_A_ (W)w, 1); 2809 ev_start (EV_A_ (W)w, 1);
2350 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2810 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2351 wlist_add (&anfds[fd].head, (WL)w); 2811 wlist_add (&anfds[fd].head, (WL)w);
2352 2812
2353 fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); 2813 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2354 w->events &= ~EV__IOFDSET; 2814 w->events &= ~EV__IOFDSET;
2355 2815
2356 EV_FREQUENT_CHECK; 2816 EV_FREQUENT_CHECK;
2357} 2817}
2358 2818
… …
2368 EV_FREQUENT_CHECK; 2828 EV_FREQUENT_CHECK;
2369 2829
2370 wlist_del (&anfds[w->fd].head, (WL)w); 2830 wlist_del (&anfds[w->fd].head, (WL)w);
2371 ev_stop (EV_A_ (W)w); 2831 ev_stop (EV_A_ (W)w);
2372 2832
2373 fd_change (EV_A_ w->fd, 1); 2833 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2374 2834
2375 EV_FREQUENT_CHECK; 2835 EV_FREQUENT_CHECK;
2376} 2836}
2377 2837
2378void noinline 2838void noinline
… …
2420 timers [active] = timers [timercnt + HEAP0]; 2880 timers [active] = timers [timercnt + HEAP0];
2421 adjustheap (timers, timercnt, active); 2881 adjustheap (timers, timercnt, active);
2422 } 2882 }
2423 } 2883 }
2424 2884
2425 EV_FREQUENT_CHECK;
2426
2427 ev_at (w) -= mn_now; 2885 ev_at (w) -= mn_now;
2428 2886
2429 ev_stop (EV_A_ (W)w); 2887 ev_stop (EV_A_ (W)w);
2888
2889 EV_FREQUENT_CHECK;
2430} 2890}
2431 2891
2432void noinline 2892void noinline
2433ev_timer_again (EV_P_ ev_timer *w) 2893ev_timer_again (EV_P_ ev_timer *w)
2434{ 2894{
… …
2452 } 2912 }
2453 2913
2454 EV_FREQUENT_CHECK; 2914 EV_FREQUENT_CHECK;
2455} 2915}
2456 2916
2917ev_tstamp
2918ev_timer_remaining (EV_P_ ev_timer *w)
2919{
2920 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2921}
2922
2457#if EV_PERIODIC_ENABLE 2923#if EV_PERIODIC_ENABLE
2458void noinline 2924void noinline
2459ev_periodic_start (EV_P_ ev_periodic *w) 2925ev_periodic_start (EV_P_ ev_periodic *w)
2460{ 2926{
2461 if (expect_false (ev_is_active (w))) 2927 if (expect_false (ev_is_active (w)))
… …
2464 if (w->reschedule_cb) 2930 if (w->reschedule_cb)
2465 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2931 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2466 else if (w->interval) 2932 else if (w->interval)
2467 { 2933 {
2468 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2934 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2469 /* this formula differs from the one in periodic_reify because we do not always round up */ 2935 periodic_recalc (EV_A_ w);
2470 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2471 } 2936 }
2472 else 2937 else
2473 ev_at (w) = w->offset; 2938 ev_at (w) = w->offset;
2474 2939
2475 EV_FREQUENT_CHECK; 2940 EV_FREQUENT_CHECK;
… …
2507 periodics [active] = periodics [periodiccnt + HEAP0]; 2972 periodics [active] = periodics [periodiccnt + HEAP0];
2508 adjustheap (periodics, periodiccnt, active); 2973 adjustheap (periodics, periodiccnt, active);
2509 } 2974 }
2510 } 2975 }
2511 2976
2512 EV_FREQUENT_CHECK;
2513
2514 ev_stop (EV_A_ (W)w); 2977 ev_stop (EV_A_ (W)w);
2978
2979 EV_FREQUENT_CHECK;
2515} 2980}
2516 2981
2517void noinline 2982void noinline
2518ev_periodic_again (EV_P_ ev_periodic *w) 2983ev_periodic_again (EV_P_ ev_periodic *w)
2519{ 2984{
… …
2525 2990
2526#ifndef SA_RESTART 2991#ifndef SA_RESTART
2527# define SA_RESTART 0 2992# define SA_RESTART 0
2528#endif 2993#endif
2529 2994
2995#if EV_SIGNAL_ENABLE
2996
2530void noinline 2997void noinline
2531ev_signal_start (EV_P_ ev_signal *w) 2998ev_signal_start (EV_P_ ev_signal *w)
2532{ 2999{
2533#if EV_MULTIPLICITY
2534 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2535#endif
2536 if (expect_false (ev_is_active (w))) 3000 if (expect_false (ev_is_active (w)))
2537 return; 3001 return;
2538 3002
2539 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); 3003 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2540 3004
2541 evpipe_init (EV_A); 3005#if EV_MULTIPLICITY
3006 assert (("libev: a signal must not be attached to two different loops",
3007 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2542 3008
2543 EV_FREQUENT_CHECK; 3009 signals [w->signum - 1].loop = EV_A;
3010#endif
2544 3011
3012 EV_FREQUENT_CHECK;
3013
3014#if EV_USE_SIGNALFD
3015 if (sigfd == -2)
2545 { 3016 {
2546#ifndef _WIN32 3017 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2547 sigset_t full, prev; 3018 if (sigfd < 0 && errno == EINVAL)
2548 sigfillset (&full); 3019 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2549 sigprocmask (SIG_SETMASK, &full, &prev);
2550#endif
2551 3020
2552 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3021 if (sigfd >= 0)
3022 {
3023 fd_intern (sigfd); /* doing it twice will not hurt */
2553 3024
2554#ifndef _WIN32 3025 sigemptyset (&sigfd_set);
2555 sigprocmask (SIG_SETMASK, &prev, 0); 3026
2556#endif 3027 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3028 ev_set_priority (&sigfd_w, EV_MAXPRI);
3029 ev_io_start (EV_A_ &sigfd_w);
3030 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3031 }
2557 } 3032 }
3033
3034 if (sigfd >= 0)
3035 {
3036 /* TODO: check .head */
3037 sigaddset (&sigfd_set, w->signum);
3038 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3039
3040 signalfd (sigfd, &sigfd_set, 0);
3041 }
3042#endif
2558 3043
2559 ev_start (EV_A_ (W)w, 1); 3044 ev_start (EV_A_ (W)w, 1);
2560 wlist_add (&signals [w->signum - 1].head, (WL)w); 3045 wlist_add (&signals [w->signum - 1].head, (WL)w);
2561 3046
2562 if (!((WL)w)->next) 3047 if (!((WL)w)->next)
3048# if EV_USE_SIGNALFD
3049 if (sigfd < 0) /*TODO*/
3050# endif
2563 { 3051 {
2564#if _WIN32 3052# ifdef _WIN32
3053 evpipe_init (EV_A);
3054
2565 signal (w->signum, ev_sighandler); 3055 signal (w->signum, ev_sighandler);
2566#else 3056# else
2567 struct sigaction sa; 3057 struct sigaction sa;
3058
3059 evpipe_init (EV_A);
3060
2568 sa.sa_handler = ev_sighandler; 3061 sa.sa_handler = ev_sighandler;
2569 sigfillset (&sa.sa_mask); 3062 sigfillset (&sa.sa_mask);
2570 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3063 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2571 sigaction (w->signum, &sa, 0); 3064 sigaction (w->signum, &sa, 0);
3065
3066 if (origflags & EVFLAG_NOSIGMASK)
3067 {
3068 sigemptyset (&sa.sa_mask);
3069 sigaddset (&sa.sa_mask, w->signum);
3070 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3071 }
2572#endif 3072#endif
2573 } 3073 }
2574 3074
2575 EV_FREQUENT_CHECK; 3075 EV_FREQUENT_CHECK;
2576} 3076}
2577 3077
2578void noinline 3078void noinline
… …
2586 3086
2587 wlist_del (&signals [w->signum - 1].head, (WL)w); 3087 wlist_del (&signals [w->signum - 1].head, (WL)w);
2588 ev_stop (EV_A_ (W)w); 3088 ev_stop (EV_A_ (W)w);
2589 3089
2590 if (!signals [w->signum - 1].head) 3090 if (!signals [w->signum - 1].head)
3091 {
3092#if EV_MULTIPLICITY
3093 signals [w->signum - 1].loop = 0; /* unattach from signal */
3094#endif
3095#if EV_USE_SIGNALFD
3096 if (sigfd >= 0)
3097 {
3098 sigset_t ss;
3099
3100 sigemptyset (&ss);
3101 sigaddset (&ss, w->signum);
3102 sigdelset (&sigfd_set, w->signum);
3103
3104 signalfd (sigfd, &sigfd_set, 0);
3105 sigprocmask (SIG_UNBLOCK, &ss, 0);
3106 }
3107 else
3108#endif
2591 signal (w->signum, SIG_DFL); 3109 signal (w->signum, SIG_DFL);
3110 }
2592 3111
2593 EV_FREQUENT_CHECK; 3112 EV_FREQUENT_CHECK;
2594} 3113}
3114
3115#endif
3116
3117#if EV_CHILD_ENABLE
2595 3118
2596void 3119void
2597ev_child_start (EV_P_ ev_child *w) 3120ev_child_start (EV_P_ ev_child *w)
2598{ 3121{
2599#if EV_MULTIPLICITY 3122#if EV_MULTIPLICITY
… …
2603 return; 3126 return;
2604 3127
2605 EV_FREQUENT_CHECK; 3128 EV_FREQUENT_CHECK;
2606 3129
2607 ev_start (EV_A_ (W)w, 1); 3130 ev_start (EV_A_ (W)w, 1);
2608 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3131 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2609 3132
2610 EV_FREQUENT_CHECK; 3133 EV_FREQUENT_CHECK;
2611} 3134}
2612 3135
2613void 3136void
… …
2617 if (expect_false (!ev_is_active (w))) 3140 if (expect_false (!ev_is_active (w)))
2618 return; 3141 return;
2619 3142
2620 EV_FREQUENT_CHECK; 3143 EV_FREQUENT_CHECK;
2621 3144
2622 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3145 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2623 ev_stop (EV_A_ (W)w); 3146 ev_stop (EV_A_ (W)w);
2624 3147
2625 EV_FREQUENT_CHECK; 3148 EV_FREQUENT_CHECK;
2626} 3149}
3150
3151#endif
2627 3152
2628#if EV_STAT_ENABLE 3153#if EV_STAT_ENABLE
2629 3154
2630# ifdef _WIN32 3155# ifdef _WIN32
2631# undef lstat 3156# undef lstat
… …
2637#define MIN_STAT_INTERVAL 0.1074891 3162#define MIN_STAT_INTERVAL 0.1074891
2638 3163
2639static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3164static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2640 3165
2641#if EV_USE_INOTIFY 3166#if EV_USE_INOTIFY
2642# define EV_INOTIFY_BUFSIZE 8192 3167
3168/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3169# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2643 3170
2644static void noinline 3171static void noinline
2645infy_add (EV_P_ ev_stat *w) 3172infy_add (EV_P_ ev_stat *w)
2646{ 3173{
2647 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3174 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2648 3175
2649 if (w->wd < 0) 3176 if (w->wd >= 0)
3177 {
3178 struct statfs sfs;
3179
3180 /* now local changes will be tracked by inotify, but remote changes won't */
3181 /* unless the filesystem is known to be local, we therefore still poll */
3182 /* also do poll on <2.6.25, but with normal frequency */
3183
3184 if (!fs_2625)
3185 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3186 else if (!statfs (w->path, &sfs)
3187 && (sfs.f_type == 0x1373 /* devfs */
3188 || sfs.f_type == 0xEF53 /* ext2/3 */
3189 || sfs.f_type == 0x3153464a /* jfs */
3190 || sfs.f_type == 0x52654973 /* reiser3 */
3191 || sfs.f_type == 0x01021994 /* tempfs */
3192 || sfs.f_type == 0x58465342 /* xfs */))
3193 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3194 else
3195 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2650 { 3196 }
3197 else
3198 {
3199 /* can't use inotify, continue to stat */
2651 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3200 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2652 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2653 3201
2654 /* monitor some parent directory for speedup hints */ 3202 /* if path is not there, monitor some parent directory for speedup hints */
2655 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3203 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2656 /* but an efficiency issue only */ 3204 /* but an efficiency issue only */
2657 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3205 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2658 { 3206 {
2659 char path [4096]; 3207 char path [4096];
… …
2669 if (!pend || pend == path) 3217 if (!pend || pend == path)
2670 break; 3218 break;
2671 3219
2672 *pend = 0; 3220 *pend = 0;
2673 w->wd = inotify_add_watch (fs_fd, path, mask); 3221 w->wd = inotify_add_watch (fs_fd, path, mask);
2674 } 3222 }
2675 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3223 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2676 } 3224 }
2677 } 3225 }
2678 3226
2679 if (w->wd >= 0) 3227 if (w->wd >= 0)
2680 {
2681 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3228 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2682 3229
2683 /* now local changes will be tracked by inotify, but remote changes won't */ 3230 /* now re-arm timer, if required */
2684 /* unless the filesystem it known to be local, we therefore still poll */ 3231 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2685 /* also do poll on <2.6.25, but with normal frequency */
2686 struct statfs sfs;
2687
2688 if (fs_2625 && !statfs (w->path, &sfs))
2689 if (sfs.f_type == 0x1373 /* devfs */
2690 || sfs.f_type == 0xEF53 /* ext2/3 */
2691 || sfs.f_type == 0x3153464a /* jfs */
2692 || sfs.f_type == 0x52654973 /* reiser3 */
2693 || sfs.f_type == 0x01021994 /* tempfs */
2694 || sfs.f_type == 0x58465342 /* xfs */)
2695 return;
2696
2697 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2698 ev_timer_again (EV_A_ &w->timer); 3232 ev_timer_again (EV_A_ &w->timer);
2699 } 3233 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2700} 3234}
2701 3235
2702static void noinline 3236static void noinline
2703infy_del (EV_P_ ev_stat *w) 3237infy_del (EV_P_ ev_stat *w)
2704{ 3238{
… …
2707 3241
2708 if (wd < 0) 3242 if (wd < 0)
2709 return; 3243 return;
2710 3244
2711 w->wd = -2; 3245 w->wd = -2;
2712 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3246 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2713 wlist_del (&fs_hash [slot].head, (WL)w); 3247 wlist_del (&fs_hash [slot].head, (WL)w);
2714 3248
2715 /* remove this watcher, if others are watching it, they will rearm */ 3249 /* remove this watcher, if others are watching it, they will rearm */
2716 inotify_rm_watch (fs_fd, wd); 3250 inotify_rm_watch (fs_fd, wd);
2717} 3251}
… …
2719static void noinline 3253static void noinline
2720infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3254infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2721{ 3255{
2722 if (slot < 0) 3256 if (slot < 0)
2723 /* overflow, need to check for all hash slots */ 3257 /* overflow, need to check for all hash slots */
2724 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3258 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2725 infy_wd (EV_A_ slot, wd, ev); 3259 infy_wd (EV_A_ slot, wd, ev);
2726 else 3260 else
2727 { 3261 {
2728 WL w_; 3262 WL w_;
2729 3263
2730 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3264 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2731 { 3265 {
2732 ev_stat *w = (ev_stat *)w_; 3266 ev_stat *w = (ev_stat *)w_;
2733 w_ = w_->next; /* lets us remove this watcher and all before it */ 3267 w_ = w_->next; /* lets us remove this watcher and all before it */
2734 3268
2735 if (w->wd == wd || wd == -1) 3269 if (w->wd == wd || wd == -1)
2736 { 3270 {
2737 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3271 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2738 { 3272 {
2739 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3273 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2740 w->wd = -1; 3274 w->wd = -1;
2741 infy_add (EV_A_ w); /* re-add, no matter what */ 3275 infy_add (EV_A_ w); /* re-add, no matter what */
2742 } 3276 }
2743 3277
2744 stat_timer_cb (EV_A_ &w->timer, 0); 3278 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2749 3283
2750static void 3284static void
2751infy_cb (EV_P_ ev_io *w, int revents) 3285infy_cb (EV_P_ ev_io *w, int revents)
2752{ 3286{
2753 char buf [EV_INOTIFY_BUFSIZE]; 3287 char buf [EV_INOTIFY_BUFSIZE];
2754 struct inotify_event *ev = (struct inotify_event *)buf;
2755 int ofs; 3288 int ofs;
2756 int len = read (fs_fd, buf, sizeof (buf)); 3289 int len = read (fs_fd, buf, sizeof (buf));
2757 3290
2758 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3291 for (ofs = 0; ofs < len; )
3292 {
3293 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2759 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3294 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3295 ofs += sizeof (struct inotify_event) + ev->len;
3296 }
2760} 3297}
2761 3298
2762inline_size void 3299inline_size void ecb_cold
2763check_2625 (EV_P) 3300ev_check_2625 (EV_P)
2764{ 3301{
2765 /* kernels < 2.6.25 are borked 3302 /* kernels < 2.6.25 are borked
2766 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3303 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2767 */ 3304 */
2768 struct utsname buf; 3305 if (ev_linux_version () < 0x020619)
2769 int major, minor, micro;
2770
2771 if (uname (&buf))
2772 return; 3306 return;
2773 3307
2774 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2775 return;
2776
2777 if (major < 2
2778 || (major == 2 && minor < 6)
2779 || (major == 2 && minor == 6 && micro < 25))
2780 return;
2781
2782 fs_2625 = 1; 3308 fs_2625 = 1;
3309}
3310
3311inline_size int
3312infy_newfd (void)
3313{
3314#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3315 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3316 if (fd >= 0)
3317 return fd;
3318#endif
3319 return inotify_init ();
2783} 3320}
2784 3321
2785inline_size void 3322inline_size void
2786infy_init (EV_P) 3323infy_init (EV_P)
2787{ 3324{
2788 if (fs_fd != -2) 3325 if (fs_fd != -2)
2789 return; 3326 return;
2790 3327
2791 fs_fd = -1; 3328 fs_fd = -1;
2792 3329
2793 check_2625 (EV_A); 3330 ev_check_2625 (EV_A);
2794 3331
2795 fs_fd = inotify_init (); 3332 fs_fd = infy_newfd ();
2796 3333
2797 if (fs_fd >= 0) 3334 if (fs_fd >= 0)
2798 { 3335 {
3336 fd_intern (fs_fd);
2799 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3337 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2800 ev_set_priority (&fs_w, EV_MAXPRI); 3338 ev_set_priority (&fs_w, EV_MAXPRI);
2801 ev_io_start (EV_A_ &fs_w); 3339 ev_io_start (EV_A_ &fs_w);
3340 ev_unref (EV_A);
2802 } 3341 }
2803} 3342}
2804 3343
2805inline_size void 3344inline_size void
2806infy_fork (EV_P) 3345infy_fork (EV_P)
… …
2808 int slot; 3347 int slot;
2809 3348
2810 if (fs_fd < 0) 3349 if (fs_fd < 0)
2811 return; 3350 return;
2812 3351
3352 ev_ref (EV_A);
3353 ev_io_stop (EV_A_ &fs_w);
2813 close (fs_fd); 3354 close (fs_fd);
2814 fs_fd = inotify_init (); 3355 fs_fd = infy_newfd ();
2815 3356
3357 if (fs_fd >= 0)
3358 {
3359 fd_intern (fs_fd);
3360 ev_io_set (&fs_w, fs_fd, EV_READ);
3361 ev_io_start (EV_A_ &fs_w);
3362 ev_unref (EV_A);
3363 }
3364
2816 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3365 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2817 { 3366 {
2818 WL w_ = fs_hash [slot].head; 3367 WL w_ = fs_hash [slot].head;
2819 fs_hash [slot].head = 0; 3368 fs_hash [slot].head = 0;
2820 3369
2821 while (w_) 3370 while (w_)
… …
2826 w->wd = -1; 3375 w->wd = -1;
2827 3376
2828 if (fs_fd >= 0) 3377 if (fs_fd >= 0)
2829 infy_add (EV_A_ w); /* re-add, no matter what */ 3378 infy_add (EV_A_ w); /* re-add, no matter what */
2830 else 3379 else
3380 {
3381 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3382 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2831 ev_timer_again (EV_A_ &w->timer); 3383 ev_timer_again (EV_A_ &w->timer);
3384 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3385 }
2832 } 3386 }
2833 } 3387 }
2834} 3388}
2835 3389
2836#endif 3390#endif
… …
2853static void noinline 3407static void noinline
2854stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3408stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2855{ 3409{
2856 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3410 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2857 3411
2858 /* we copy this here each the time so that */ 3412 ev_statdata prev = w->attr;
2859 /* prev has the old value when the callback gets invoked */
2860 w->prev = w->attr;
2861 ev_stat_stat (EV_A_ w); 3413 ev_stat_stat (EV_A_ w);
2862 3414
2863 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3415 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2864 if ( 3416 if (
2865 w->prev.st_dev != w->attr.st_dev 3417 prev.st_dev != w->attr.st_dev
2866 || w->prev.st_ino != w->attr.st_ino 3418 || prev.st_ino != w->attr.st_ino
2867 || w->prev.st_mode != w->attr.st_mode 3419 || prev.st_mode != w->attr.st_mode
2868 || w->prev.st_nlink != w->attr.st_nlink 3420 || prev.st_nlink != w->attr.st_nlink
2869 || w->prev.st_uid != w->attr.st_uid 3421 || prev.st_uid != w->attr.st_uid
2870 || w->prev.st_gid != w->attr.st_gid 3422 || prev.st_gid != w->attr.st_gid
2871 || w->prev.st_rdev != w->attr.st_rdev 3423 || prev.st_rdev != w->attr.st_rdev
2872 || w->prev.st_size != w->attr.st_size 3424 || prev.st_size != w->attr.st_size
2873 || w->prev.st_atime != w->attr.st_atime 3425 || prev.st_atime != w->attr.st_atime
2874 || w->prev.st_mtime != w->attr.st_mtime 3426 || prev.st_mtime != w->attr.st_mtime
2875 || w->prev.st_ctime != w->attr.st_ctime 3427 || prev.st_ctime != w->attr.st_ctime
2876 ) { 3428 ) {
3429 /* we only update w->prev on actual differences */
3430 /* in case we test more often than invoke the callback, */
3431 /* to ensure that prev is always different to attr */
3432 w->prev = prev;
3433
2877 #if EV_USE_INOTIFY 3434 #if EV_USE_INOTIFY
2878 if (fs_fd >= 0) 3435 if (fs_fd >= 0)
2879 { 3436 {
2880 infy_del (EV_A_ w); 3437 infy_del (EV_A_ w);
2881 infy_add (EV_A_ w); 3438 infy_add (EV_A_ w);
… …
2906 3463
2907 if (fs_fd >= 0) 3464 if (fs_fd >= 0)
2908 infy_add (EV_A_ w); 3465 infy_add (EV_A_ w);
2909 else 3466 else
2910#endif 3467#endif
3468 {
2911 ev_timer_again (EV_A_ &w->timer); 3469 ev_timer_again (EV_A_ &w->timer);
3470 ev_unref (EV_A);
3471 }
2912 3472
2913 ev_start (EV_A_ (W)w, 1); 3473 ev_start (EV_A_ (W)w, 1);
2914 3474
2915 EV_FREQUENT_CHECK; 3475 EV_FREQUENT_CHECK;
2916} 3476}
… …
2925 EV_FREQUENT_CHECK; 3485 EV_FREQUENT_CHECK;
2926 3486
2927#if EV_USE_INOTIFY 3487#if EV_USE_INOTIFY
2928 infy_del (EV_A_ w); 3488 infy_del (EV_A_ w);
2929#endif 3489#endif
3490
3491 if (ev_is_active (&w->timer))
3492 {
3493 ev_ref (EV_A);
2930 ev_timer_stop (EV_A_ &w->timer); 3494 ev_timer_stop (EV_A_ &w->timer);
3495 }
2931 3496
2932 ev_stop (EV_A_ (W)w); 3497 ev_stop (EV_A_ (W)w);
2933 3498
2934 EV_FREQUENT_CHECK; 3499 EV_FREQUENT_CHECK;
2935} 3500}
… …
2980 3545
2981 EV_FREQUENT_CHECK; 3546 EV_FREQUENT_CHECK;
2982} 3547}
2983#endif 3548#endif
2984 3549
3550#if EV_PREPARE_ENABLE
2985void 3551void
2986ev_prepare_start (EV_P_ ev_prepare *w) 3552ev_prepare_start (EV_P_ ev_prepare *w)
2987{ 3553{
2988 if (expect_false (ev_is_active (w))) 3554 if (expect_false (ev_is_active (w)))
2989 return; 3555 return;
… …
3015 3581
3016 ev_stop (EV_A_ (W)w); 3582 ev_stop (EV_A_ (W)w);
3017 3583
3018 EV_FREQUENT_CHECK; 3584 EV_FREQUENT_CHECK;
3019} 3585}
3586#endif
3020 3587
3588#if EV_CHECK_ENABLE
3021void 3589void
3022ev_check_start (EV_P_ ev_check *w) 3590ev_check_start (EV_P_ ev_check *w)
3023{ 3591{
3024 if (expect_false (ev_is_active (w))) 3592 if (expect_false (ev_is_active (w)))
3025 return; 3593 return;
… …
3051 3619
3052 ev_stop (EV_A_ (W)w); 3620 ev_stop (EV_A_ (W)w);
3053 3621
3054 EV_FREQUENT_CHECK; 3622 EV_FREQUENT_CHECK;
3055} 3623}
3624#endif
3056 3625
3057#if EV_EMBED_ENABLE 3626#if EV_EMBED_ENABLE
3058void noinline 3627void noinline
3059ev_embed_sweep (EV_P_ ev_embed *w) 3628ev_embed_sweep (EV_P_ ev_embed *w)
3060{ 3629{
3061 ev_loop (w->other, EVLOOP_NONBLOCK); 3630 ev_run (w->other, EVRUN_NOWAIT);
3062} 3631}
3063 3632
3064static void 3633static void
3065embed_io_cb (EV_P_ ev_io *io, int revents) 3634embed_io_cb (EV_P_ ev_io *io, int revents)
3066{ 3635{
3067 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3636 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3068 3637
3069 if (ev_cb (w)) 3638 if (ev_cb (w))
3070 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3639 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3071 else 3640 else
3072 ev_loop (w->other, EVLOOP_NONBLOCK); 3641 ev_run (w->other, EVRUN_NOWAIT);
3073} 3642}
3074 3643
3075static void 3644static void
3076embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3645embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3077{ 3646{
3078 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3647 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3079 3648
3080 { 3649 {
3081 struct ev_loop *loop = w->other; 3650 EV_P = w->other;
3082 3651
3083 while (fdchangecnt) 3652 while (fdchangecnt)
3084 { 3653 {
3085 fd_reify (EV_A); 3654 fd_reify (EV_A);
3086 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3655 ev_run (EV_A_ EVRUN_NOWAIT);
3087 } 3656 }
3088 } 3657 }
3089} 3658}
3090 3659
3091static void 3660static void
… …
3094 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3663 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3095 3664
3096 ev_embed_stop (EV_A_ w); 3665 ev_embed_stop (EV_A_ w);
3097 3666
3098 { 3667 {
3099 struct ev_loop *loop = w->other; 3668 EV_P = w->other;
3100 3669
3101 ev_loop_fork (EV_A); 3670 ev_loop_fork (EV_A);
3102 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3671 ev_run (EV_A_ EVRUN_NOWAIT);
3103 } 3672 }
3104 3673
3105 ev_embed_start (EV_A_ w); 3674 ev_embed_start (EV_A_ w);
3106} 3675}
3107 3676
… …
3118{ 3687{
3119 if (expect_false (ev_is_active (w))) 3688 if (expect_false (ev_is_active (w)))
3120 return; 3689 return;
3121 3690
3122 { 3691 {
3123 struct ev_loop *loop = w->other; 3692 EV_P = w->other;
3124 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3693 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3125 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3694 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3126 } 3695 }
3127 3696
3128 EV_FREQUENT_CHECK; 3697 EV_FREQUENT_CHECK;
… …
3155 3724
3156 ev_io_stop (EV_A_ &w->io); 3725 ev_io_stop (EV_A_ &w->io);
3157 ev_prepare_stop (EV_A_ &w->prepare); 3726 ev_prepare_stop (EV_A_ &w->prepare);
3158 ev_fork_stop (EV_A_ &w->fork); 3727 ev_fork_stop (EV_A_ &w->fork);
3159 3728
3729 ev_stop (EV_A_ (W)w);
3730
3160 EV_FREQUENT_CHECK; 3731 EV_FREQUENT_CHECK;
3161} 3732}
3162#endif 3733#endif
3163 3734
3164#if EV_FORK_ENABLE 3735#if EV_FORK_ENABLE
… …
3197 3768
3198 EV_FREQUENT_CHECK; 3769 EV_FREQUENT_CHECK;
3199} 3770}
3200#endif 3771#endif
3201 3772
3773#if EV_CLEANUP_ENABLE
3774void
3775ev_cleanup_start (EV_P_ ev_cleanup *w)
3776{
3777 if (expect_false (ev_is_active (w)))
3778 return;
3779
3780 EV_FREQUENT_CHECK;
3781
3782 ev_start (EV_A_ (W)w, ++cleanupcnt);
3783 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3784 cleanups [cleanupcnt - 1] = w;
3785
3786 /* cleanup watchers should never keep a refcount on the loop */
3787 ev_unref (EV_A);
3788 EV_FREQUENT_CHECK;
3789}
3790
3791void
3792ev_cleanup_stop (EV_P_ ev_cleanup *w)
3793{
3794 clear_pending (EV_A_ (W)w);
3795 if (expect_false (!ev_is_active (w)))
3796 return;
3797
3798 EV_FREQUENT_CHECK;
3799 ev_ref (EV_A);
3800
3801 {
3802 int active = ev_active (w);
3803
3804 cleanups [active - 1] = cleanups [--cleanupcnt];
3805 ev_active (cleanups [active - 1]) = active;
3806 }
3807
3808 ev_stop (EV_A_ (W)w);
3809
3810 EV_FREQUENT_CHECK;
3811}
3812#endif
3813
3202#if EV_ASYNC_ENABLE 3814#if EV_ASYNC_ENABLE
3203void 3815void
3204ev_async_start (EV_P_ ev_async *w) 3816ev_async_start (EV_P_ ev_async *w)
3205{ 3817{
3206 if (expect_false (ev_is_active (w))) 3818 if (expect_false (ev_is_active (w)))
3207 return; 3819 return;
3208 3820
3821 w->sent = 0;
3822
3209 evpipe_init (EV_A); 3823 evpipe_init (EV_A);
3210 3824
3211 EV_FREQUENT_CHECK; 3825 EV_FREQUENT_CHECK;
3212 3826
3213 ev_start (EV_A_ (W)w, ++asynccnt); 3827 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3240 3854
3241void 3855void
3242ev_async_send (EV_P_ ev_async *w) 3856ev_async_send (EV_P_ ev_async *w)
3243{ 3857{
3244 w->sent = 1; 3858 w->sent = 1;
3245 evpipe_write (EV_A_ &gotasync); 3859 evpipe_write (EV_A_ &async_pending);
3246} 3860}
3247#endif 3861#endif
3248 3862
3249/*****************************************************************************/ 3863/*****************************************************************************/
3250 3864
… …
3290{ 3904{
3291 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3905 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3292 3906
3293 if (expect_false (!once)) 3907 if (expect_false (!once))
3294 { 3908 {
3295 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3909 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3296 return; 3910 return;
3297 } 3911 }
3298 3912
3299 once->cb = cb; 3913 once->cb = cb;
3300 once->arg = arg; 3914 once->arg = arg;
… …
3315} 3929}
3316 3930
3317/*****************************************************************************/ 3931/*****************************************************************************/
3318 3932
3319#if EV_WALK_ENABLE 3933#if EV_WALK_ENABLE
3320void 3934void ecb_cold
3321ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 3935ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3322{ 3936{
3323 int i, j; 3937 int i, j;
3324 ev_watcher_list *wl, *wn; 3938 ev_watcher_list *wl, *wn;
3325 3939
… …
3387 if (types & EV_ASYNC) 4001 if (types & EV_ASYNC)
3388 for (i = asynccnt; i--; ) 4002 for (i = asynccnt; i--; )
3389 cb (EV_A_ EV_ASYNC, asyncs [i]); 4003 cb (EV_A_ EV_ASYNC, asyncs [i]);
3390#endif 4004#endif
3391 4005
4006#if EV_PREPARE_ENABLE
3392 if (types & EV_PREPARE) 4007 if (types & EV_PREPARE)
3393 for (i = preparecnt; i--; ) 4008 for (i = preparecnt; i--; )
3394#if EV_EMBED_ENABLE 4009# if EV_EMBED_ENABLE
3395 if (ev_cb (prepares [i]) != embed_prepare_cb) 4010 if (ev_cb (prepares [i]) != embed_prepare_cb)
3396#endif 4011# endif
3397 cb (EV_A_ EV_PREPARE, prepares [i]); 4012 cb (EV_A_ EV_PREPARE, prepares [i]);
4013#endif
3398 4014
4015#if EV_CHECK_ENABLE
3399 if (types & EV_CHECK) 4016 if (types & EV_CHECK)
3400 for (i = checkcnt; i--; ) 4017 for (i = checkcnt; i--; )
3401 cb (EV_A_ EV_CHECK, checks [i]); 4018 cb (EV_A_ EV_CHECK, checks [i]);
4019#endif
3402 4020
4021#if EV_SIGNAL_ENABLE
3403 if (types & EV_SIGNAL) 4022 if (types & EV_SIGNAL)
3404 for (i = 0; i < signalmax; ++i) 4023 for (i = 0; i < EV_NSIG - 1; ++i)
3405 for (wl = signals [i].head; wl; ) 4024 for (wl = signals [i].head; wl; )
3406 { 4025 {
3407 wn = wl->next; 4026 wn = wl->next;
3408 cb (EV_A_ EV_SIGNAL, wl); 4027 cb (EV_A_ EV_SIGNAL, wl);
3409 wl = wn; 4028 wl = wn;
3410 } 4029 }
4030#endif
3411 4031
4032#if EV_CHILD_ENABLE
3412 if (types & EV_CHILD) 4033 if (types & EV_CHILD)
3413 for (i = EV_PID_HASHSIZE; i--; ) 4034 for (i = (EV_PID_HASHSIZE); i--; )
3414 for (wl = childs [i]; wl; ) 4035 for (wl = childs [i]; wl; )
3415 { 4036 {
3416 wn = wl->next; 4037 wn = wl->next;
3417 cb (EV_A_ EV_CHILD, wl); 4038 cb (EV_A_ EV_CHILD, wl);
3418 wl = wn; 4039 wl = wn;
3419 } 4040 }
4041#endif
3420/* EV_STAT 0x00001000 /* stat data changed */ 4042/* EV_STAT 0x00001000 /* stat data changed */
3421/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ 4043/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3422} 4044}
3423#endif 4045#endif
3424 4046
3425#if EV_MULTIPLICITY 4047#if EV_MULTIPLICITY
3426 #include "ev_wrap.h" 4048 #include "ev_wrap.h"
3427#endif 4049#endif
3428 4050
3429#ifdef __cplusplus 4051EV_CPP(})
3430}
3431#endif
3432 4052

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