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Comparing libev/ev.c (file contents):
Revision 1.263 by root, Wed Oct 1 18:50:03 2008 UTC vs.
Revision 1.379 by root, Sun Jun 19 17:55:13 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
51 47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
53
54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME
58# define EV_USE_REALTIME 0
59# endif
60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1
62# endif
63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL)
65# define EV_USE_CLOCK_SYSCALL 0
66# endif
67
52# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
55# endif 71# endif
56# ifndef EV_USE_REALTIME 72# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 73# define EV_USE_REALTIME 0
58# endif 74# endif
59# else 75# else
60# ifndef EV_USE_MONOTONIC 76# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 77# define EV_USE_MONOTONIC 0
62# endif 78# endif
63# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
65# endif 81# endif
66# endif 82# endif
67 83
84# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
71# else 88# else
89# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
74# endif 100# endif
75 101
102# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 105# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 106# else
107# undef EV_USE_POLL
88# define EV_USE_POLL 0 108# define EV_USE_POLL 0
89# endif
90# endif 109# endif
91 110
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
95# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
98# endif 118# endif
99 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
106# endif 127# endif
107 128
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
111# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
114# endif 136# endif
115 137
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
122# endif 145# endif
123 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
154# endif
155
156# if HAVE_EVENTFD
157# ifndef EV_USE_EVENTFD
158# define EV_USE_EVENTFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
130# endif 163# endif
131 164
132#endif 165#endif
133 166
134#include <math.h>
135#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
136#include <fcntl.h> 169#include <fcntl.h>
137#include <stddef.h> 170#include <stddef.h>
138 171
139#include <stdio.h> 172#include <stdio.h>
140 173
141#include <assert.h> 174#include <assert.h>
142#include <errno.h> 175#include <errno.h>
143#include <sys/types.h> 176#include <sys/types.h>
144#include <time.h> 177#include <time.h>
178#include <limits.h>
145 179
146#include <signal.h> 180#include <signal.h>
147 181
148#ifdef EV_H 182#ifdef EV_H
149# include EV_H 183# include EV_H
150#else 184#else
151# include "ev.h" 185# include "ev.h"
152#endif 186#endif
187
188EV_CPP(extern "C" {)
153 189
154#ifndef _WIN32 190#ifndef _WIN32
155# include <sys/time.h> 191# include <sys/time.h>
156# include <sys/wait.h> 192# include <sys/wait.h>
157# include <unistd.h> 193# include <unistd.h>
… …
160# define WIN32_LEAN_AND_MEAN 196# define WIN32_LEAN_AND_MEAN
161# include <windows.h> 197# include <windows.h>
162# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
163# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
164# endif 200# endif
201# undef EV_AVOID_STDIO
165#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
166 211
167/* 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
245
246#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else
250# define EV_USE_CLOCK_SYSCALL 0
251# endif
252#endif
168 253
169#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1 256# define EV_USE_MONOTONIC EV_FEATURE_OS
172# else 257# else
173# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
174# endif 259# endif
175#endif 260#endif
176 261
177#ifndef EV_USE_REALTIME 262#ifndef EV_USE_REALTIME
178# define EV_USE_REALTIME 0 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179#endif 264#endif
180 265
181#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L 267# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1 268# define EV_USE_NANOSLEEP EV_FEATURE_OS
184# else 269# else
185# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
186# endif 271# endif
187#endif 272#endif
188 273
189#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
190# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
191#endif 276#endif
192 277
193#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
194# ifdef _WIN32 279# ifdef _WIN32
195# define EV_USE_POLL 0 280# define EV_USE_POLL 0
196# else 281# else
197# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
198# endif 283# endif
199#endif 284#endif
200 285
201#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
204# else 289# else
205# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
206# endif 291# endif
207#endif 292#endif
208 293
… …
214# define EV_USE_PORT 0 299# define EV_USE_PORT 0
215#endif 300#endif
216 301
217#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
220# else 305# else
221# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
222# endif 307# endif
223#endif 308#endif
224 309
225#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
226# if EV_MINIMAL 311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
227# define EV_PID_HASHSIZE 1
228# else
229# define EV_PID_HASHSIZE 16
230# endif
231#endif 312#endif
232 313
233#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
234# if EV_MINIMAL 315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
235# define EV_INOTIFY_HASHSIZE 1
236# else
237# define EV_INOTIFY_HASHSIZE 16
238# endif
239#endif 316#endif
240 317
241#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
244# else 321# else
245# 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
246# endif 331# endif
247#endif 332#endif
248 333
249#if 0 /* debugging */ 334#if 0 /* debugging */
250# define EV_VERIFY 3 335# define EV_VERIFY 3
251# define EV_USE_4HEAP 1 336# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1 337# define EV_HEAP_CACHE_AT 1
253#endif 338#endif
254 339
255#ifndef EV_VERIFY 340#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL 341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
257#endif 342#endif
258 343
259#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
261#endif 346#endif
262 347
263#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
264# define EV_HEAP_CACHE_AT !EV_MINIMAL 349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif
351
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h>
356# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1
360# else
361# undef EV_USE_CLOCK_SYSCALL
362# define EV_USE_CLOCK_SYSCALL 0
363# endif
265#endif 364#endif
266 365
267/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 366/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
268 373
269#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
270# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
271# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
272#endif 377#endif
… …
280# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
281# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
282#endif 387#endif
283 388
284#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
285# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
286# include <sys/select.h> 392# include <sys/select.h>
287# endif 393# endif
288#endif 394#endif
289 395
290#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
397# include <sys/statfs.h>
291# include <sys/inotify.h> 398# include <sys/inotify.h>
292/* 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 */
293# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
294# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
295# define EV_USE_INOTIFY 0 402# define EV_USE_INOTIFY 0
… …
301#endif 408#endif
302 409
303#if EV_USE_EVENTFD 410#if EV_USE_EVENTFD
304/* 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 */
305# include <stdint.h> 412# include <stdint.h>
306# ifdef __cplusplus 413# ifndef EFD_NONBLOCK
307extern "C" { 414# define EFD_NONBLOCK O_NONBLOCK
308# endif 415# endif
309int eventfd (unsigned int initval, int flags); 416# ifndef EFD_CLOEXEC
310# ifdef __cplusplus 417# ifdef O_CLOEXEC
311} 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
312# 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};
313#endif 446#endif
314 447
315/**/ 448/**/
316 449
317#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
318# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
319#else 452#else
320# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
321#endif 454#endif
322 455
323/* 456/*
324 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
325 * It is added to ev_rt_now when scheduling periodics
326 * to ensure progress, time-wise, even when rounding
327 * errors are against us.
328 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
329 * Better solutions welcome.
330 */ 459 */
331#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 */
332 462
333#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) */
334#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) */
335/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
336 465
337#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)
338# 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)
339# 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
340#else 493#else
341# define expect(expr,value) (expr) 494 #define ecb_inline static
342# define noinline
343# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
344# define inline
345# endif 495#endif
346#endif
347 496
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. */
348#define expect_false(expr) expect ((expr) != 0, 0) 528#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
349#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
350#define inline_size static inline 536#define inline_size ecb_inline
351 537
352#if EV_MINIMAL 538#if EV_FEATURE_CODE
539# define inline_speed ecb_inline
540#else
353# define inline_speed static noinline 541# define inline_speed static noinline
542#endif
543
544#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
545
546#if EV_MINPRI == EV_MAXPRI
547# define ABSPRI(w) (((W)w), 0)
354#else 548#else
355# define inline_speed static inline
356#endif
357
358#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
359#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 549# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
550#endif
360 551
361#define EMPTY /* required for microsofts broken pseudo-c compiler */ 552#define EMPTY /* required for microsofts broken pseudo-c compiler */
362#define EMPTY2(a,b) /* used to suppress some warnings */ 553#define EMPTY2(a,b) /* used to suppress some warnings */
363 554
364typedef ev_watcher *W; 555typedef ev_watcher *W;
… …
366typedef ev_watcher_time *WT; 557typedef ev_watcher_time *WT;
367 558
368#define ev_active(w) ((W)(w))->active 559#define ev_active(w) ((W)(w))->active
369#define ev_at(w) ((WT)(w))->at 560#define ev_at(w) ((WT)(w))->at
370 561
562#if EV_USE_REALTIME
563/* sig_atomic_t is used to avoid per-thread variables or locking but still */
564/* giving it a reasonably high chance of working on typical architectures */
565static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
566#endif
567
371#if EV_USE_MONOTONIC 568#if EV_USE_MONOTONIC
372/* sig_atomic_t is used to avoid per-thread variables or locking but still */
373/* giving it a reasonably high chance of working on typical architetcures */
374static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 569static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
570#endif
571
572#ifndef EV_FD_TO_WIN32_HANDLE
573# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
574#endif
575#ifndef EV_WIN32_HANDLE_TO_FD
576# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
577#endif
578#ifndef EV_WIN32_CLOSE_FD
579# define EV_WIN32_CLOSE_FD(fd) close (fd)
375#endif 580#endif
376 581
377#ifdef _WIN32 582#ifdef _WIN32
378# include "ev_win32.c" 583# include "ev_win32.c"
379#endif 584#endif
380 585
381/*****************************************************************************/ 586/*****************************************************************************/
382 587
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
383static void (*syserr_cb)(const char *msg); 686static void (*syserr_cb)(const char *msg);
384 687
385void 688void ecb_cold
386ev_set_syserr_cb (void (*cb)(const char *msg)) 689ev_set_syserr_cb (void (*cb)(const char *msg))
387{ 690{
388 syserr_cb = cb; 691 syserr_cb = cb;
389} 692}
390 693
391static void noinline 694static void noinline ecb_cold
392syserr (const char *msg) 695ev_syserr (const char *msg)
393{ 696{
394 if (!msg) 697 if (!msg)
395 msg = "(libev) system error"; 698 msg = "(libev) system error";
396 699
397 if (syserr_cb) 700 if (syserr_cb)
398 syserr_cb (msg); 701 syserr_cb (msg);
399 else 702 else
400 { 703 {
704#if EV_AVOID_STDIO
705 ev_printerr (msg);
706 ev_printerr (": ");
707 ev_printerr (strerror (errno));
708 ev_printerr ("\n");
709#else
401 perror (msg); 710 perror (msg);
711#endif
402 abort (); 712 abort ();
403 } 713 }
404} 714}
405 715
406static void * 716static void *
407ev_realloc_emul (void *ptr, long size) 717ev_realloc_emul (void *ptr, long size)
408{ 718{
719#if __GLIBC__
720 return realloc (ptr, size);
721#else
409 /* some systems, notably openbsd and darwin, fail to properly 722 /* some systems, notably openbsd and darwin, fail to properly
410 * 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
411 * the single unix specification, so work around them here. 724 * the single unix specification, so work around them here.
412 */ 725 */
413 726
414 if (size) 727 if (size)
415 return realloc (ptr, size); 728 return realloc (ptr, size);
416 729
417 free (ptr); 730 free (ptr);
418 return 0; 731 return 0;
732#endif
419} 733}
420 734
421static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 735static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
422 736
423void 737void ecb_cold
424ev_set_allocator (void *(*cb)(void *ptr, long size)) 738ev_set_allocator (void *(*cb)(void *ptr, long size))
425{ 739{
426 alloc = cb; 740 alloc = cb;
427} 741}
428 742
… …
431{ 745{
432 ptr = alloc (ptr, size); 746 ptr = alloc (ptr, size);
433 747
434 if (!ptr && size) 748 if (!ptr && size)
435 { 749 {
750#if EV_AVOID_STDIO
751 ev_printerr ("(libev) memory allocation failed, aborting.\n");
752#else
436 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 753 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
754#endif
437 abort (); 755 abort ();
438 } 756 }
439 757
440 return ptr; 758 return ptr;
441} 759}
… …
443#define ev_malloc(size) ev_realloc (0, (size)) 761#define ev_malloc(size) ev_realloc (0, (size))
444#define ev_free(ptr) ev_realloc ((ptr), 0) 762#define ev_free(ptr) ev_realloc ((ptr), 0)
445 763
446/*****************************************************************************/ 764/*****************************************************************************/
447 765
766/* set in reify when reification needed */
767#define EV_ANFD_REIFY 1
768
769/* file descriptor info structure */
448typedef struct 770typedef struct
449{ 771{
450 WL head; 772 WL head;
451 unsigned char events; 773 unsigned char events; /* the events watched for */
774 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
775 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
452 unsigned char reify; 776 unsigned char unused;
777#if EV_USE_EPOLL
778 unsigned int egen; /* generation counter to counter epoll bugs */
779#endif
453#if EV_SELECT_IS_WINSOCKET 780#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
454 SOCKET handle; 781 SOCKET handle;
455#endif 782#endif
783#if EV_USE_IOCP
784 OVERLAPPED or, ow;
785#endif
456} ANFD; 786} ANFD;
457 787
788/* stores the pending event set for a given watcher */
458typedef struct 789typedef struct
459{ 790{
460 W w; 791 W w;
461 int events; 792 int events; /* the pending event set for the given watcher */
462} ANPENDING; 793} ANPENDING;
463 794
464#if EV_USE_INOTIFY 795#if EV_USE_INOTIFY
465/* hash table entry per inotify-id */ 796/* hash table entry per inotify-id */
466typedef struct 797typedef struct
… …
469} ANFS; 800} ANFS;
470#endif 801#endif
471 802
472/* Heap Entry */ 803/* Heap Entry */
473#if EV_HEAP_CACHE_AT 804#if EV_HEAP_CACHE_AT
805 /* a heap element */
474 typedef struct { 806 typedef struct {
475 ev_tstamp at; 807 ev_tstamp at;
476 WT w; 808 WT w;
477 } ANHE; 809 } ANHE;
478 810
479 #define ANHE_w(he) (he).w /* access watcher, read-write */ 811 #define ANHE_w(he) (he).w /* access watcher, read-write */
480 #define ANHE_at(he) (he).at /* access cached at, read-only */ 812 #define ANHE_at(he) (he).at /* access cached at, read-only */
481 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 813 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
482#else 814#else
815 /* a heap element */
483 typedef WT ANHE; 816 typedef WT ANHE;
484 817
485 #define ANHE_w(he) (he) 818 #define ANHE_w(he) (he)
486 #define ANHE_at(he) (he)->at 819 #define ANHE_at(he) (he)->at
487 #define ANHE_at_cache(he) 820 #define ANHE_at_cache(he)
… …
511 844
512 static int ev_default_loop_ptr; 845 static int ev_default_loop_ptr;
513 846
514#endif 847#endif
515 848
849#if EV_FEATURE_API
850# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
851# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
852# define EV_INVOKE_PENDING invoke_cb (EV_A)
853#else
854# define EV_RELEASE_CB (void)0
855# define EV_ACQUIRE_CB (void)0
856# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
857#endif
858
859#define EVBREAK_RECURSE 0x80
860
516/*****************************************************************************/ 861/*****************************************************************************/
517 862
863#ifndef EV_HAVE_EV_TIME
518ev_tstamp 864ev_tstamp
519ev_time (void) 865ev_time (void)
520{ 866{
521#if EV_USE_REALTIME 867#if EV_USE_REALTIME
868 if (expect_true (have_realtime))
869 {
522 struct timespec ts; 870 struct timespec ts;
523 clock_gettime (CLOCK_REALTIME, &ts); 871 clock_gettime (CLOCK_REALTIME, &ts);
524 return ts.tv_sec + ts.tv_nsec * 1e-9; 872 return ts.tv_sec + ts.tv_nsec * 1e-9;
525#else 873 }
874#endif
875
526 struct timeval tv; 876 struct timeval tv;
527 gettimeofday (&tv, 0); 877 gettimeofday (&tv, 0);
528 return tv.tv_sec + tv.tv_usec * 1e-6; 878 return tv.tv_sec + tv.tv_usec * 1e-6;
529#endif
530} 879}
880#endif
531 881
532ev_tstamp inline_size 882inline_size ev_tstamp
533get_clock (void) 883get_clock (void)
534{ 884{
535#if EV_USE_MONOTONIC 885#if EV_USE_MONOTONIC
536 if (expect_true (have_monotonic)) 886 if (expect_true (have_monotonic))
537 { 887 {
… …
558 if (delay > 0.) 908 if (delay > 0.)
559 { 909 {
560#if EV_USE_NANOSLEEP 910#if EV_USE_NANOSLEEP
561 struct timespec ts; 911 struct timespec ts;
562 912
563 ts.tv_sec = (time_t)delay; 913 EV_TS_SET (ts, delay);
564 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
565
566 nanosleep (&ts, 0); 914 nanosleep (&ts, 0);
567#elif defined(_WIN32) 915#elif defined(_WIN32)
568 Sleep ((unsigned long)(delay * 1e3)); 916 Sleep ((unsigned long)(delay * 1e3));
569#else 917#else
570 struct timeval tv; 918 struct timeval tv;
571 919
572 tv.tv_sec = (time_t)delay;
573 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
574
575 /* 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 */
576 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 921 /* something not guaranteed by newer posix versions, but guaranteed */
577 /* by older ones */ 922 /* by older ones */
923 EV_TV_SET (tv, delay);
578 select (0, 0, 0, 0, &tv); 924 select (0, 0, 0, 0, &tv);
579#endif 925#endif
580 } 926 }
581} 927}
582 928
583/*****************************************************************************/ 929/*****************************************************************************/
584 930
585#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 */
586 932
587int inline_size 933/* find a suitable new size for the given array, */
934/* hopefully by rounding to a nice-to-malloc size */
935inline_size int
588array_nextsize (int elem, int cur, int cnt) 936array_nextsize (int elem, int cur, int cnt)
589{ 937{
590 int ncur = cur + 1; 938 int ncur = cur + 1;
591 939
592 do 940 do
… …
603 } 951 }
604 952
605 return ncur; 953 return ncur;
606} 954}
607 955
608static noinline void * 956static void * noinline ecb_cold
609array_realloc (int elem, void *base, int *cur, int cnt) 957array_realloc (int elem, void *base, int *cur, int cnt)
610{ 958{
611 *cur = array_nextsize (elem, *cur, cnt); 959 *cur = array_nextsize (elem, *cur, cnt);
612 return ev_realloc (base, elem * *cur); 960 return ev_realloc (base, elem * *cur);
613} 961}
962
963#define array_init_zero(base,count) \
964 memset ((void *)(base), 0, sizeof (*(base)) * (count))
614 965
615#define array_needsize(type,base,cur,cnt,init) \ 966#define array_needsize(type,base,cur,cnt,init) \
616 if (expect_false ((cnt) > (cur))) \ 967 if (expect_false ((cnt) > (cur))) \
617 { \ 968 { \
618 int ocur_ = (cur); \ 969 int ocur_ = (cur); \
… …
630 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 981 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
631 } 982 }
632#endif 983#endif
633 984
634#define array_free(stem, idx) \ 985#define array_free(stem, idx) \
635 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 986 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
636 987
637/*****************************************************************************/ 988/*****************************************************************************/
989
990/* dummy callback for pending events */
991static void noinline
992pendingcb (EV_P_ ev_prepare *w, int revents)
993{
994}
638 995
639void noinline 996void noinline
640ev_feed_event (EV_P_ void *w, int revents) 997ev_feed_event (EV_P_ void *w, int revents)
641{ 998{
642 W w_ = (W)w; 999 W w_ = (W)w;
… …
651 pendings [pri][w_->pending - 1].w = w_; 1008 pendings [pri][w_->pending - 1].w = w_;
652 pendings [pri][w_->pending - 1].events = revents; 1009 pendings [pri][w_->pending - 1].events = revents;
653 } 1010 }
654} 1011}
655 1012
656void inline_speed 1013inline_speed void
1014feed_reverse (EV_P_ W w)
1015{
1016 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1017 rfeeds [rfeedcnt++] = w;
1018}
1019
1020inline_size void
1021feed_reverse_done (EV_P_ int revents)
1022{
1023 do
1024 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1025 while (rfeedcnt);
1026}
1027
1028inline_speed void
657queue_events (EV_P_ W *events, int eventcnt, int type) 1029queue_events (EV_P_ W *events, int eventcnt, int type)
658{ 1030{
659 int i; 1031 int i;
660 1032
661 for (i = 0; i < eventcnt; ++i) 1033 for (i = 0; i < eventcnt; ++i)
662 ev_feed_event (EV_A_ events [i], type); 1034 ev_feed_event (EV_A_ events [i], type);
663} 1035}
664 1036
665/*****************************************************************************/ 1037/*****************************************************************************/
666 1038
667void inline_size 1039inline_speed void
668anfds_init (ANFD *base, int count)
669{
670 while (count--)
671 {
672 base->head = 0;
673 base->events = EV_NONE;
674 base->reify = 0;
675
676 ++base;
677 }
678}
679
680void inline_speed
681fd_event (EV_P_ int fd, int revents) 1040fd_event_nocheck (EV_P_ int fd, int revents)
682{ 1041{
683 ANFD *anfd = anfds + fd; 1042 ANFD *anfd = anfds + fd;
684 ev_io *w; 1043 ev_io *w;
685 1044
686 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)
… …
690 if (ev) 1049 if (ev)
691 ev_feed_event (EV_A_ (W)w, ev); 1050 ev_feed_event (EV_A_ (W)w, ev);
692 } 1051 }
693} 1052}
694 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
695void 1065void
696ev_feed_fd_event (EV_P_ int fd, int revents) 1066ev_feed_fd_event (EV_P_ int fd, int revents)
697{ 1067{
698 if (fd >= 0 && fd < anfdmax) 1068 if (fd >= 0 && fd < anfdmax)
699 fd_event (EV_A_ fd, revents); 1069 fd_event_nocheck (EV_A_ fd, revents);
700} 1070}
701 1071
702void inline_size 1072/* make sure the external fd watch events are in-sync */
1073/* with the kernel/libev internal state */
1074inline_size void
703fd_reify (EV_P) 1075fd_reify (EV_P)
704{ 1076{
705 int i; 1077 int i;
1078
1079#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1080 for (i = 0; i < fdchangecnt; ++i)
1081 {
1082 int fd = fdchanges [i];
1083 ANFD *anfd = anfds + fd;
1084
1085 if (anfd->reify & EV__IOFDSET && anfd->head)
1086 {
1087 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1088
1089 if (handle != anfd->handle)
1090 {
1091 unsigned long arg;
1092
1093 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1094
1095 /* handle changed, but fd didn't - we need to do it in two steps */
1096 backend_modify (EV_A_ fd, anfd->events, 0);
1097 anfd->events = 0;
1098 anfd->handle = handle;
1099 }
1100 }
1101 }
1102#endif
706 1103
707 for (i = 0; i < fdchangecnt; ++i) 1104 for (i = 0; i < fdchangecnt; ++i)
708 { 1105 {
709 int fd = fdchanges [i]; 1106 int fd = fdchanges [i];
710 ANFD *anfd = anfds + fd; 1107 ANFD *anfd = anfds + fd;
711 ev_io *w; 1108 ev_io *w;
712 1109
713 unsigned char events = 0; 1110 unsigned char o_events = anfd->events;
1111 unsigned char o_reify = anfd->reify;
714 1112
715 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1113 anfd->reify = 0;
716 events |= (unsigned char)w->events;
717 1114
718#if EV_SELECT_IS_WINSOCKET 1115 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
719 if (events)
720 { 1116 {
721 unsigned long arg; 1117 anfd->events = 0;
722 #ifdef EV_FD_TO_WIN32_HANDLE 1118
723 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1119 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
724 #else 1120 anfd->events |= (unsigned char)w->events;
725 anfd->handle = _get_osfhandle (fd); 1121
726 #endif 1122 if (o_events != anfd->events)
727 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1123 o_reify = EV__IOFDSET; /* actually |= */
728 } 1124 }
729#endif
730 1125
731 { 1126 if (o_reify & EV__IOFDSET)
732 unsigned char o_events = anfd->events;
733 unsigned char o_reify = anfd->reify;
734
735 anfd->reify = 0;
736 anfd->events = events;
737
738 if (o_events != events || o_reify & EV_IOFDSET)
739 backend_modify (EV_A_ fd, o_events, events); 1127 backend_modify (EV_A_ fd, o_events, anfd->events);
740 }
741 } 1128 }
742 1129
743 fdchangecnt = 0; 1130 fdchangecnt = 0;
744} 1131}
745 1132
746void inline_size 1133/* something about the given fd changed */
1134inline_size void
747fd_change (EV_P_ int fd, int flags) 1135fd_change (EV_P_ int fd, int flags)
748{ 1136{
749 unsigned char reify = anfds [fd].reify; 1137 unsigned char reify = anfds [fd].reify;
750 anfds [fd].reify |= flags; 1138 anfds [fd].reify |= flags;
751 1139
… …
755 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1143 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
756 fdchanges [fdchangecnt - 1] = fd; 1144 fdchanges [fdchangecnt - 1] = fd;
757 } 1145 }
758} 1146}
759 1147
760void inline_speed 1148/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1149inline_speed void ecb_cold
761fd_kill (EV_P_ int fd) 1150fd_kill (EV_P_ int fd)
762{ 1151{
763 ev_io *w; 1152 ev_io *w;
764 1153
765 while ((w = (ev_io *)anfds [fd].head)) 1154 while ((w = (ev_io *)anfds [fd].head))
… …
767 ev_io_stop (EV_A_ w); 1156 ev_io_stop (EV_A_ w);
768 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);
769 } 1158 }
770} 1159}
771 1160
772int inline_size 1161/* check whether the given fd is actually valid, for error recovery */
1162inline_size int ecb_cold
773fd_valid (int fd) 1163fd_valid (int fd)
774{ 1164{
775#ifdef _WIN32 1165#ifdef _WIN32
776 return _get_osfhandle (fd) != -1; 1166 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
777#else 1167#else
778 return fcntl (fd, F_GETFD) != -1; 1168 return fcntl (fd, F_GETFD) != -1;
779#endif 1169#endif
780} 1170}
781 1171
782/* called on EBADF to verify fds */ 1172/* called on EBADF to verify fds */
783static void noinline 1173static void noinline ecb_cold
784fd_ebadf (EV_P) 1174fd_ebadf (EV_P)
785{ 1175{
786 int fd; 1176 int fd;
787 1177
788 for (fd = 0; fd < anfdmax; ++fd) 1178 for (fd = 0; fd < anfdmax; ++fd)
… …
790 if (!fd_valid (fd) && errno == EBADF) 1180 if (!fd_valid (fd) && errno == EBADF)
791 fd_kill (EV_A_ fd); 1181 fd_kill (EV_A_ fd);
792} 1182}
793 1183
794/* 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 */
795static void noinline 1185static void noinline ecb_cold
796fd_enomem (EV_P) 1186fd_enomem (EV_P)
797{ 1187{
798 int fd; 1188 int fd;
799 1189
800 for (fd = anfdmax; fd--; ) 1190 for (fd = anfdmax; fd--; )
801 if (anfds [fd].events) 1191 if (anfds [fd].events)
802 { 1192 {
803 fd_kill (EV_A_ fd); 1193 fd_kill (EV_A_ fd);
804 return; 1194 break;
805 } 1195 }
806} 1196}
807 1197
808/* 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 */
809static void noinline 1199static void noinline
… …
813 1203
814 for (fd = 0; fd < anfdmax; ++fd) 1204 for (fd = 0; fd < anfdmax; ++fd)
815 if (anfds [fd].events) 1205 if (anfds [fd].events)
816 { 1206 {
817 anfds [fd].events = 0; 1207 anfds [fd].events = 0;
1208 anfds [fd].emask = 0;
818 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1209 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
819 } 1210 }
820} 1211}
821 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
822/*****************************************************************************/ 1227/*****************************************************************************/
823 1228
824/* 1229/*
825 * 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
826 * 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
827 * the branching factor of the d-tree. 1232 * the branching factor of the d-tree.
828 */ 1233 */
829 1234
830/* 1235/*
… …
839#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1244#define HEAP0 (DHEAP - 1) /* index of first element in heap */
840#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1245#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
841#define UPHEAP_DONE(p,k) ((p) == (k)) 1246#define UPHEAP_DONE(p,k) ((p) == (k))
842 1247
843/* away from the root */ 1248/* away from the root */
844void inline_speed 1249inline_speed void
845downheap (ANHE *heap, int N, int k) 1250downheap (ANHE *heap, int N, int k)
846{ 1251{
847 ANHE he = heap [k]; 1252 ANHE he = heap [k];
848 ANHE *E = heap + N + HEAP0; 1253 ANHE *E = heap + N + HEAP0;
849 1254
… …
889#define HEAP0 1 1294#define HEAP0 1
890#define HPARENT(k) ((k) >> 1) 1295#define HPARENT(k) ((k) >> 1)
891#define UPHEAP_DONE(p,k) (!(p)) 1296#define UPHEAP_DONE(p,k) (!(p))
892 1297
893/* away from the root */ 1298/* away from the root */
894void inline_speed 1299inline_speed void
895downheap (ANHE *heap, int N, int k) 1300downheap (ANHE *heap, int N, int k)
896{ 1301{
897 ANHE he = heap [k]; 1302 ANHE he = heap [k];
898 1303
899 for (;;) 1304 for (;;)
900 { 1305 {
901 int c = k << 1; 1306 int c = k << 1;
902 1307
903 if (c > N + HEAP0 - 1) 1308 if (c >= N + HEAP0)
904 break; 1309 break;
905 1310
906 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])
907 ? 1 : 0; 1312 ? 1 : 0;
908 1313
… …
919 ev_active (ANHE_w (he)) = k; 1324 ev_active (ANHE_w (he)) = k;
920} 1325}
921#endif 1326#endif
922 1327
923/* towards the root */ 1328/* towards the root */
924void inline_speed 1329inline_speed void
925upheap (ANHE *heap, int k) 1330upheap (ANHE *heap, int k)
926{ 1331{
927 ANHE he = heap [k]; 1332 ANHE he = heap [k];
928 1333
929 for (;;) 1334 for (;;)
… …
940 1345
941 heap [k] = he; 1346 heap [k] = he;
942 ev_active (ANHE_w (he)) = k; 1347 ev_active (ANHE_w (he)) = k;
943} 1348}
944 1349
945void inline_size 1350/* move an element suitably so it is in a correct place */
1351inline_size void
946adjustheap (ANHE *heap, int N, int k) 1352adjustheap (ANHE *heap, int N, int k)
947{ 1353{
948 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)]))
949 upheap (heap, k); 1355 upheap (heap, k);
950 else 1356 else
951 downheap (heap, N, k); 1357 downheap (heap, N, k);
952} 1358}
953 1359
954/* rebuild the heap: this function is used only once and executed rarely */ 1360/* rebuild the heap: this function is used only once and executed rarely */
955void inline_size 1361inline_size void
956reheap (ANHE *heap, int N) 1362reheap (ANHE *heap, int N)
957{ 1363{
958 int i; 1364 int i;
959 1365
960 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1366 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
… …
963 upheap (heap, i + HEAP0); 1369 upheap (heap, i + HEAP0);
964} 1370}
965 1371
966/*****************************************************************************/ 1372/*****************************************************************************/
967 1373
1374/* associate signal watchers to a signal signal */
968typedef struct 1375typedef struct
969{ 1376{
1377 EV_ATOMIC_T pending;
1378#if EV_MULTIPLICITY
1379 EV_P;
1380#endif
970 WL head; 1381 WL head;
971 EV_ATOMIC_T gotsig;
972} ANSIG; 1382} ANSIG;
973 1383
974static ANSIG *signals; 1384static ANSIG signals [EV_NSIG - 1];
975static int signalmax;
976
977static EV_ATOMIC_T gotsig;
978
979void inline_size
980signals_init (ANSIG *base, int count)
981{
982 while (count--)
983 {
984 base->head = 0;
985 base->gotsig = 0;
986
987 ++base;
988 }
989}
990 1385
991/*****************************************************************************/ 1386/*****************************************************************************/
992 1387
993void inline_speed 1388#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
994fd_intern (int fd)
995{
996#ifdef _WIN32
997 unsigned long arg = 1;
998 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
999#else
1000 fcntl (fd, F_SETFD, FD_CLOEXEC);
1001 fcntl (fd, F_SETFL, O_NONBLOCK);
1002#endif
1003}
1004 1389
1005static void noinline 1390static void noinline ecb_cold
1006evpipe_init (EV_P) 1391evpipe_init (EV_P)
1007{ 1392{
1008 if (!ev_is_active (&pipeev)) 1393 if (!ev_is_active (&pipe_w))
1009 { 1394 {
1010#if EV_USE_EVENTFD 1395# if EV_USE_EVENTFD
1396 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1397 if (evfd < 0 && errno == EINVAL)
1011 if ((evfd = eventfd (0, 0)) >= 0) 1398 evfd = eventfd (0, 0);
1399
1400 if (evfd >= 0)
1012 { 1401 {
1013 evpipe [0] = -1; 1402 evpipe [0] = -1;
1014 fd_intern (evfd); 1403 fd_intern (evfd); /* doing it twice doesn't hurt */
1015 ev_io_set (&pipeev, evfd, EV_READ); 1404 ev_io_set (&pipe_w, evfd, EV_READ);
1016 } 1405 }
1017 else 1406 else
1018#endif 1407# endif
1019 { 1408 {
1020 while (pipe (evpipe)) 1409 while (pipe (evpipe))
1021 syserr ("(libev) error creating signal/async pipe"); 1410 ev_syserr ("(libev) error creating signal/async pipe");
1022 1411
1023 fd_intern (evpipe [0]); 1412 fd_intern (evpipe [0]);
1024 fd_intern (evpipe [1]); 1413 fd_intern (evpipe [1]);
1025 ev_io_set (&pipeev, evpipe [0], EV_READ); 1414 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1026 } 1415 }
1027 1416
1028 ev_io_start (EV_A_ &pipeev); 1417 ev_io_start (EV_A_ &pipe_w);
1029 ev_unref (EV_A); /* watcher should not keep loop alive */ 1418 ev_unref (EV_A); /* watcher should not keep loop alive */
1030 } 1419 }
1031} 1420}
1032 1421
1033void inline_size 1422inline_size void
1034evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1423evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1035{ 1424{
1036 if (!*flag) 1425 if (!*flag)
1037 { 1426 {
1038 int old_errno = errno; /* save errno because write might clobber it */
1039
1040 *flag = 1; 1427 *flag = 1;
1041 1428
1429 pipe_write_skipped = 1;
1430
1431 if (pipe_write_wanted)
1432 {
1433 int old_errno = errno; /* save errno because write will clobber it */
1434 char dummy;
1435
1436 pipe_write_skipped = 0;
1437
1438#if EV_USE_EVENTFD
1439 if (evfd >= 0)
1440 {
1441 uint64_t counter = 1;
1442 write (evfd, &counter, sizeof (uint64_t));
1443 }
1444 else
1445#endif
1446 {
1447 /* win32 people keep sending patches that change this write() to send() */
1448 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1449 /* so when you think this write should be a send instead, please find out */
1450 /* where your send() is from - it's definitely not the microsoft send, and */
1451 /* tell me. thank you. */
1452 write (evpipe [1], &dummy, 1);
1453 }
1454
1455 errno = old_errno;
1456 }
1457 }
1458}
1459
1460/* called whenever the libev signal pipe */
1461/* got some events (signal, async) */
1462static void
1463pipecb (EV_P_ ev_io *iow, int revents)
1464{
1465 int i;
1466
1467 if (revents & EV_READ)
1468 {
1042#if EV_USE_EVENTFD 1469#if EV_USE_EVENTFD
1043 if (evfd >= 0) 1470 if (evfd >= 0)
1044 { 1471 {
1045 uint64_t counter = 1; 1472 uint64_t counter;
1046 write (evfd, &counter, sizeof (uint64_t)); 1473 read (evfd, &counter, sizeof (uint64_t));
1047 } 1474 }
1048 else 1475 else
1049#endif 1476#endif
1050 write (evpipe [1], &old_errno, 1); 1477 {
1051
1052 errno = old_errno;
1053 }
1054}
1055
1056static void
1057pipecb (EV_P_ ev_io *iow, int revents)
1058{
1059#if EV_USE_EVENTFD
1060 if (evfd >= 0)
1061 {
1062 uint64_t counter;
1063 read (evfd, &counter, sizeof (uint64_t));
1064 }
1065 else
1066#endif
1067 {
1068 char dummy; 1478 char dummy;
1479 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1069 read (evpipe [0], &dummy, 1); 1480 read (evpipe [0], &dummy, 1);
1481 }
1482 }
1483
1484 pipe_write_skipped = 0;
1485
1486#if EV_SIGNAL_ENABLE
1487 if (sig_pending)
1070 } 1488 {
1489 sig_pending = 0;
1071 1490
1072 if (gotsig && ev_is_default_loop (EV_A)) 1491 for (i = EV_NSIG - 1; i--; )
1073 { 1492 if (expect_false (signals [i].pending))
1074 int signum;
1075 gotsig = 0;
1076
1077 for (signum = signalmax; signum--; )
1078 if (signals [signum].gotsig)
1079 ev_feed_signal_event (EV_A_ signum + 1); 1493 ev_feed_signal_event (EV_A_ i + 1);
1080 } 1494 }
1495#endif
1081 1496
1082#if EV_ASYNC_ENABLE 1497#if EV_ASYNC_ENABLE
1083 if (gotasync) 1498 if (async_pending)
1084 { 1499 {
1085 int i; 1500 async_pending = 0;
1086 gotasync = 0;
1087 1501
1088 for (i = asynccnt; i--; ) 1502 for (i = asynccnt; i--; )
1089 if (asyncs [i]->sent) 1503 if (asyncs [i]->sent)
1090 { 1504 {
1091 asyncs [i]->sent = 0; 1505 asyncs [i]->sent = 0;
… …
1095#endif 1509#endif
1096} 1510}
1097 1511
1098/*****************************************************************************/ 1512/*****************************************************************************/
1099 1513
1514void
1515ev_feed_signal (int signum)
1516{
1517#if EV_MULTIPLICITY
1518 EV_P = signals [signum - 1].loop;
1519
1520 if (!EV_A)
1521 return;
1522#endif
1523
1524 evpipe_init (EV_A);
1525
1526 signals [signum - 1].pending = 1;
1527 evpipe_write (EV_A_ &sig_pending);
1528}
1529
1100static void 1530static void
1101ev_sighandler (int signum) 1531ev_sighandler (int signum)
1102{ 1532{
1103#if EV_MULTIPLICITY
1104 struct ev_loop *loop = &default_loop_struct;
1105#endif
1106
1107#if _WIN32 1533#ifdef _WIN32
1108 signal (signum, ev_sighandler); 1534 signal (signum, ev_sighandler);
1109#endif 1535#endif
1110 1536
1111 signals [signum - 1].gotsig = 1; 1537 ev_feed_signal (signum);
1112 evpipe_write (EV_A_ &gotsig);
1113} 1538}
1114 1539
1115void noinline 1540void noinline
1116ev_feed_signal_event (EV_P_ int signum) 1541ev_feed_signal_event (EV_P_ int signum)
1117{ 1542{
1118 WL w; 1543 WL w;
1119 1544
1545 if (expect_false (signum <= 0 || signum > EV_NSIG))
1546 return;
1547
1548 --signum;
1549
1120#if EV_MULTIPLICITY 1550#if EV_MULTIPLICITY
1121 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1551 /* it is permissible to try to feed a signal to the wrong loop */
1122#endif 1552 /* or, likely more useful, feeding a signal nobody is waiting for */
1123 1553
1124 --signum; 1554 if (expect_false (signals [signum].loop != EV_A))
1125
1126 if (signum < 0 || signum >= signalmax)
1127 return; 1555 return;
1556#endif
1128 1557
1129 signals [signum].gotsig = 0; 1558 signals [signum].pending = 0;
1130 1559
1131 for (w = signals [signum].head; w; w = w->next) 1560 for (w = signals [signum].head; w; w = w->next)
1132 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1561 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1133} 1562}
1134 1563
1564#if EV_USE_SIGNALFD
1565static void
1566sigfdcb (EV_P_ ev_io *iow, int revents)
1567{
1568 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1569
1570 for (;;)
1571 {
1572 ssize_t res = read (sigfd, si, sizeof (si));
1573
1574 /* not ISO-C, as res might be -1, but works with SuS */
1575 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1576 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1577
1578 if (res < (ssize_t)sizeof (si))
1579 break;
1580 }
1581}
1582#endif
1583
1584#endif
1585
1135/*****************************************************************************/ 1586/*****************************************************************************/
1136 1587
1588#if EV_CHILD_ENABLE
1137static WL childs [EV_PID_HASHSIZE]; 1589static WL childs [EV_PID_HASHSIZE];
1138
1139#ifndef _WIN32
1140 1590
1141static ev_signal childev; 1591static ev_signal childev;
1142 1592
1143#ifndef WIFCONTINUED 1593#ifndef WIFCONTINUED
1144# define WIFCONTINUED(status) 0 1594# define WIFCONTINUED(status) 0
1145#endif 1595#endif
1146 1596
1147void inline_speed 1597/* handle a single child status event */
1598inline_speed void
1148child_reap (EV_P_ int chain, int pid, int status) 1599child_reap (EV_P_ int chain, int pid, int status)
1149{ 1600{
1150 ev_child *w; 1601 ev_child *w;
1151 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1602 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1152 1603
1153 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1604 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1154 { 1605 {
1155 if ((w->pid == pid || !w->pid) 1606 if ((w->pid == pid || !w->pid)
1156 && (!traced || (w->flags & 1))) 1607 && (!traced || (w->flags & 1)))
1157 { 1608 {
1158 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1609 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1165 1616
1166#ifndef WCONTINUED 1617#ifndef WCONTINUED
1167# define WCONTINUED 0 1618# define WCONTINUED 0
1168#endif 1619#endif
1169 1620
1621/* called on sigchld etc., calls waitpid */
1170static void 1622static void
1171childcb (EV_P_ ev_signal *sw, int revents) 1623childcb (EV_P_ ev_signal *sw, int revents)
1172{ 1624{
1173 int pid, status; 1625 int pid, status;
1174 1626
… …
1182 /* make sure we are called again until all children have been reaped */ 1634 /* make sure we are called again until all children have been reaped */
1183 /* we need to do it this way so that the callback gets called before we continue */ 1635 /* we need to do it this way so that the callback gets called before we continue */
1184 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1636 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1185 1637
1186 child_reap (EV_A_ pid, pid, status); 1638 child_reap (EV_A_ pid, pid, status);
1187 if (EV_PID_HASHSIZE > 1) 1639 if ((EV_PID_HASHSIZE) > 1)
1188 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1640 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1189} 1641}
1190 1642
1191#endif 1643#endif
1192 1644
1193/*****************************************************************************/ 1645/*****************************************************************************/
1194 1646
1647#if EV_USE_IOCP
1648# include "ev_iocp.c"
1649#endif
1195#if EV_USE_PORT 1650#if EV_USE_PORT
1196# include "ev_port.c" 1651# include "ev_port.c"
1197#endif 1652#endif
1198#if EV_USE_KQUEUE 1653#if EV_USE_KQUEUE
1199# include "ev_kqueue.c" 1654# include "ev_kqueue.c"
… …
1206#endif 1661#endif
1207#if EV_USE_SELECT 1662#if EV_USE_SELECT
1208# include "ev_select.c" 1663# include "ev_select.c"
1209#endif 1664#endif
1210 1665
1211int 1666int ecb_cold
1212ev_version_major (void) 1667ev_version_major (void)
1213{ 1668{
1214 return EV_VERSION_MAJOR; 1669 return EV_VERSION_MAJOR;
1215} 1670}
1216 1671
1217int 1672int ecb_cold
1218ev_version_minor (void) 1673ev_version_minor (void)
1219{ 1674{
1220 return EV_VERSION_MINOR; 1675 return EV_VERSION_MINOR;
1221} 1676}
1222 1677
1223/* return true if we are running with elevated privileges and should ignore env variables */ 1678/* return true if we are running with elevated privileges and should ignore env variables */
1224int inline_size 1679int inline_size ecb_cold
1225enable_secure (void) 1680enable_secure (void)
1226{ 1681{
1227#ifdef _WIN32 1682#ifdef _WIN32
1228 return 0; 1683 return 0;
1229#else 1684#else
1230 return getuid () != geteuid () 1685 return getuid () != geteuid ()
1231 || getgid () != getegid (); 1686 || getgid () != getegid ();
1232#endif 1687#endif
1233} 1688}
1234 1689
1235unsigned int 1690unsigned int ecb_cold
1236ev_supported_backends (void) 1691ev_supported_backends (void)
1237{ 1692{
1238 unsigned int flags = 0; 1693 unsigned int flags = 0;
1239 1694
1240 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1695 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1244 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1699 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1245 1700
1246 return flags; 1701 return flags;
1247} 1702}
1248 1703
1249unsigned int 1704unsigned int ecb_cold
1250ev_recommended_backends (void) 1705ev_recommended_backends (void)
1251{ 1706{
1252 unsigned int flags = ev_supported_backends (); 1707 unsigned int flags = ev_supported_backends ();
1253 1708
1254#ifndef __NetBSD__ 1709#ifndef __NetBSD__
1255 /* kqueue is borked on everything but netbsd apparently */ 1710 /* kqueue is borked on everything but netbsd apparently */
1256 /* it usually doesn't work correctly on anything but sockets and pipes */ 1711 /* it usually doesn't work correctly on anything but sockets and pipes */
1257 flags &= ~EVBACKEND_KQUEUE; 1712 flags &= ~EVBACKEND_KQUEUE;
1258#endif 1713#endif
1259#ifdef __APPLE__ 1714#ifdef __APPLE__
1260 // flags &= ~EVBACKEND_KQUEUE; for documentation 1715 /* only select works correctly on that "unix-certified" platform */
1261 flags &= ~EVBACKEND_POLL; 1716 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1717 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1718#endif
1719#ifdef __FreeBSD__
1720 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1262#endif 1721#endif
1263 1722
1264 return flags; 1723 return flags;
1265} 1724}
1266 1725
1267unsigned int 1726unsigned int ecb_cold
1268ev_embeddable_backends (void) 1727ev_embeddable_backends (void)
1269{ 1728{
1270 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1729 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1271 1730
1272 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1731 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1273 /* please fix it and tell me how to detect the fix */ 1732 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1274 flags &= ~EVBACKEND_EPOLL; 1733 flags &= ~EVBACKEND_EPOLL;
1275 1734
1276 return flags; 1735 return flags;
1277} 1736}
1278 1737
1279unsigned int 1738unsigned int
1280ev_backend (EV_P) 1739ev_backend (EV_P)
1281{ 1740{
1282 return backend; 1741 return backend;
1283} 1742}
1284 1743
1744#if EV_FEATURE_API
1285unsigned int 1745unsigned int
1286ev_loop_count (EV_P) 1746ev_iteration (EV_P)
1287{ 1747{
1288 return loop_count; 1748 return loop_count;
1749}
1750
1751unsigned int
1752ev_depth (EV_P)
1753{
1754 return loop_depth;
1289} 1755}
1290 1756
1291void 1757void
1292ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1758ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1293{ 1759{
… …
1298ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1764ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1299{ 1765{
1300 timeout_blocktime = interval; 1766 timeout_blocktime = interval;
1301} 1767}
1302 1768
1769void
1770ev_set_userdata (EV_P_ void *data)
1771{
1772 userdata = data;
1773}
1774
1775void *
1776ev_userdata (EV_P)
1777{
1778 return userdata;
1779}
1780
1781void
1782ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1783{
1784 invoke_cb = invoke_pending_cb;
1785}
1786
1787void
1788ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1789{
1790 release_cb = release;
1791 acquire_cb = acquire;
1792}
1793#endif
1794
1795/* initialise a loop structure, must be zero-initialised */
1303static void noinline 1796static void noinline ecb_cold
1304loop_init (EV_P_ unsigned int flags) 1797loop_init (EV_P_ unsigned int flags)
1305{ 1798{
1306 if (!backend) 1799 if (!backend)
1307 { 1800 {
1801 origflags = flags;
1802
1803#if EV_USE_REALTIME
1804 if (!have_realtime)
1805 {
1806 struct timespec ts;
1807
1808 if (!clock_gettime (CLOCK_REALTIME, &ts))
1809 have_realtime = 1;
1810 }
1811#endif
1812
1308#if EV_USE_MONOTONIC 1813#if EV_USE_MONOTONIC
1814 if (!have_monotonic)
1309 { 1815 {
1310 struct timespec ts; 1816 struct timespec ts;
1817
1311 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1818 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1312 have_monotonic = 1; 1819 have_monotonic = 1;
1313 } 1820 }
1314#endif
1315
1316 ev_rt_now = ev_time ();
1317 mn_now = get_clock ();
1318 now_floor = mn_now;
1319 rtmn_diff = ev_rt_now - mn_now;
1320
1321 io_blocktime = 0.;
1322 timeout_blocktime = 0.;
1323 backend = 0;
1324 backend_fd = -1;
1325 gotasync = 0;
1326#if EV_USE_INOTIFY
1327 fs_fd = -2;
1328#endif 1821#endif
1329 1822
1330 /* pid check not overridable via env */ 1823 /* pid check not overridable via env */
1331#ifndef _WIN32 1824#ifndef _WIN32
1332 if (flags & EVFLAG_FORKCHECK) 1825 if (flags & EVFLAG_FORKCHECK)
… …
1336 if (!(flags & EVFLAG_NOENV) 1829 if (!(flags & EVFLAG_NOENV)
1337 && !enable_secure () 1830 && !enable_secure ()
1338 && getenv ("LIBEV_FLAGS")) 1831 && getenv ("LIBEV_FLAGS"))
1339 flags = atoi (getenv ("LIBEV_FLAGS")); 1832 flags = atoi (getenv ("LIBEV_FLAGS"));
1340 1833
1341 if (!(flags & 0x0000ffffU)) 1834 ev_rt_now = ev_time ();
1835 mn_now = get_clock ();
1836 now_floor = mn_now;
1837 rtmn_diff = ev_rt_now - mn_now;
1838#if EV_FEATURE_API
1839 invoke_cb = ev_invoke_pending;
1840#endif
1841
1842 io_blocktime = 0.;
1843 timeout_blocktime = 0.;
1844 backend = 0;
1845 backend_fd = -1;
1846 sig_pending = 0;
1847#if EV_ASYNC_ENABLE
1848 async_pending = 0;
1849#endif
1850 pipe_write_skipped = 0;
1851 pipe_write_wanted = 0;
1852#if EV_USE_INOTIFY
1853 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1854#endif
1855#if EV_USE_SIGNALFD
1856 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1857#endif
1858
1859 if (!(flags & EVBACKEND_MASK))
1342 flags |= ev_recommended_backends (); 1860 flags |= ev_recommended_backends ();
1343 1861
1862#if EV_USE_IOCP
1863 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1864#endif
1344#if EV_USE_PORT 1865#if EV_USE_PORT
1345 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1866 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1346#endif 1867#endif
1347#if EV_USE_KQUEUE 1868#if EV_USE_KQUEUE
1348 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1869 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1355#endif 1876#endif
1356#if EV_USE_SELECT 1877#if EV_USE_SELECT
1357 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1878 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1358#endif 1879#endif
1359 1880
1881 ev_prepare_init (&pending_w, pendingcb);
1882
1883#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1360 ev_init (&pipeev, pipecb); 1884 ev_init (&pipe_w, pipecb);
1361 ev_set_priority (&pipeev, EV_MAXPRI); 1885 ev_set_priority (&pipe_w, EV_MAXPRI);
1886#endif
1362 } 1887 }
1363} 1888}
1364 1889
1365static void noinline 1890/* free up a loop structure */
1891void ecb_cold
1366loop_destroy (EV_P) 1892ev_loop_destroy (EV_P)
1367{ 1893{
1368 int i; 1894 int i;
1369 1895
1896#if EV_MULTIPLICITY
1897 /* mimic free (0) */
1898 if (!EV_A)
1899 return;
1900#endif
1901
1902#if EV_CLEANUP_ENABLE
1903 /* queue cleanup watchers (and execute them) */
1904 if (expect_false (cleanupcnt))
1905 {
1906 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1907 EV_INVOKE_PENDING;
1908 }
1909#endif
1910
1911#if EV_CHILD_ENABLE
1912 if (ev_is_active (&childev))
1913 {
1914 ev_ref (EV_A); /* child watcher */
1915 ev_signal_stop (EV_A_ &childev);
1916 }
1917#endif
1918
1370 if (ev_is_active (&pipeev)) 1919 if (ev_is_active (&pipe_w))
1371 { 1920 {
1372 ev_ref (EV_A); /* signal watcher */ 1921 /*ev_ref (EV_A);*/
1373 ev_io_stop (EV_A_ &pipeev); 1922 /*ev_io_stop (EV_A_ &pipe_w);*/
1374 1923
1375#if EV_USE_EVENTFD 1924#if EV_USE_EVENTFD
1376 if (evfd >= 0) 1925 if (evfd >= 0)
1377 close (evfd); 1926 close (evfd);
1378#endif 1927#endif
1379 1928
1380 if (evpipe [0] >= 0) 1929 if (evpipe [0] >= 0)
1381 { 1930 {
1382 close (evpipe [0]); 1931 EV_WIN32_CLOSE_FD (evpipe [0]);
1383 close (evpipe [1]); 1932 EV_WIN32_CLOSE_FD (evpipe [1]);
1384 } 1933 }
1385 } 1934 }
1935
1936#if EV_USE_SIGNALFD
1937 if (ev_is_active (&sigfd_w))
1938 close (sigfd);
1939#endif
1386 1940
1387#if EV_USE_INOTIFY 1941#if EV_USE_INOTIFY
1388 if (fs_fd >= 0) 1942 if (fs_fd >= 0)
1389 close (fs_fd); 1943 close (fs_fd);
1390#endif 1944#endif
1391 1945
1392 if (backend_fd >= 0) 1946 if (backend_fd >= 0)
1393 close (backend_fd); 1947 close (backend_fd);
1394 1948
1949#if EV_USE_IOCP
1950 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1951#endif
1395#if EV_USE_PORT 1952#if EV_USE_PORT
1396 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1953 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1397#endif 1954#endif
1398#if EV_USE_KQUEUE 1955#if EV_USE_KQUEUE
1399 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1956 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1414#if EV_IDLE_ENABLE 1971#if EV_IDLE_ENABLE
1415 array_free (idle, [i]); 1972 array_free (idle, [i]);
1416#endif 1973#endif
1417 } 1974 }
1418 1975
1419 ev_free (anfds); anfdmax = 0; 1976 ev_free (anfds); anfds = 0; anfdmax = 0;
1420 1977
1421 /* have to use the microsoft-never-gets-it-right macro */ 1978 /* have to use the microsoft-never-gets-it-right macro */
1979 array_free (rfeed, EMPTY);
1422 array_free (fdchange, EMPTY); 1980 array_free (fdchange, EMPTY);
1423 array_free (timer, EMPTY); 1981 array_free (timer, EMPTY);
1424#if EV_PERIODIC_ENABLE 1982#if EV_PERIODIC_ENABLE
1425 array_free (periodic, EMPTY); 1983 array_free (periodic, EMPTY);
1426#endif 1984#endif
1427#if EV_FORK_ENABLE 1985#if EV_FORK_ENABLE
1428 array_free (fork, EMPTY); 1986 array_free (fork, EMPTY);
1429#endif 1987#endif
1988#if EV_CLEANUP_ENABLE
1989 array_free (cleanup, EMPTY);
1990#endif
1430 array_free (prepare, EMPTY); 1991 array_free (prepare, EMPTY);
1431 array_free (check, EMPTY); 1992 array_free (check, EMPTY);
1432#if EV_ASYNC_ENABLE 1993#if EV_ASYNC_ENABLE
1433 array_free (async, EMPTY); 1994 array_free (async, EMPTY);
1434#endif 1995#endif
1435 1996
1436 backend = 0; 1997 backend = 0;
1998
1999#if EV_MULTIPLICITY
2000 if (ev_is_default_loop (EV_A))
2001#endif
2002 ev_default_loop_ptr = 0;
2003#if EV_MULTIPLICITY
2004 else
2005 ev_free (EV_A);
2006#endif
1437} 2007}
1438 2008
1439#if EV_USE_INOTIFY 2009#if EV_USE_INOTIFY
1440void inline_size infy_fork (EV_P); 2010inline_size void infy_fork (EV_P);
1441#endif 2011#endif
1442 2012
1443void inline_size 2013inline_size void
1444loop_fork (EV_P) 2014loop_fork (EV_P)
1445{ 2015{
1446#if EV_USE_PORT 2016#if EV_USE_PORT
1447 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2017 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1448#endif 2018#endif
… …
1454#endif 2024#endif
1455#if EV_USE_INOTIFY 2025#if EV_USE_INOTIFY
1456 infy_fork (EV_A); 2026 infy_fork (EV_A);
1457#endif 2027#endif
1458 2028
1459 if (ev_is_active (&pipeev)) 2029 if (ev_is_active (&pipe_w))
1460 { 2030 {
1461 /* this "locks" the handlers against writing to the pipe */ 2031 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1462 /* while we modify the fd vars */
1463 gotsig = 1;
1464#if EV_ASYNC_ENABLE
1465 gotasync = 1;
1466#endif
1467 2032
1468 ev_ref (EV_A); 2033 ev_ref (EV_A);
1469 ev_io_stop (EV_A_ &pipeev); 2034 ev_io_stop (EV_A_ &pipe_w);
1470 2035
1471#if EV_USE_EVENTFD 2036#if EV_USE_EVENTFD
1472 if (evfd >= 0) 2037 if (evfd >= 0)
1473 close (evfd); 2038 close (evfd);
1474#endif 2039#endif
1475 2040
1476 if (evpipe [0] >= 0) 2041 if (evpipe [0] >= 0)
1477 { 2042 {
1478 close (evpipe [0]); 2043 EV_WIN32_CLOSE_FD (evpipe [0]);
1479 close (evpipe [1]); 2044 EV_WIN32_CLOSE_FD (evpipe [1]);
1480 } 2045 }
1481 2046
2047#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1482 evpipe_init (EV_A); 2048 evpipe_init (EV_A);
1483 /* now iterate over everything, in case we missed something */ 2049 /* now iterate over everything, in case we missed something */
1484 pipecb (EV_A_ &pipeev, EV_READ); 2050 pipecb (EV_A_ &pipe_w, EV_READ);
2051#endif
1485 } 2052 }
1486 2053
1487 postfork = 0; 2054 postfork = 0;
1488} 2055}
1489 2056
1490#if EV_MULTIPLICITY 2057#if EV_MULTIPLICITY
1491 2058
1492struct ev_loop * 2059struct ev_loop * ecb_cold
1493ev_loop_new (unsigned int flags) 2060ev_loop_new (unsigned int flags)
1494{ 2061{
1495 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2062 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1496 2063
1497 memset (loop, 0, sizeof (struct ev_loop)); 2064 memset (EV_A, 0, sizeof (struct ev_loop));
1498
1499 loop_init (EV_A_ flags); 2065 loop_init (EV_A_ flags);
1500 2066
1501 if (ev_backend (EV_A)) 2067 if (ev_backend (EV_A))
1502 return loop; 2068 return EV_A;
1503 2069
2070 ev_free (EV_A);
1504 return 0; 2071 return 0;
1505} 2072}
1506 2073
1507void 2074#endif /* multiplicity */
1508ev_loop_destroy (EV_P)
1509{
1510 loop_destroy (EV_A);
1511 ev_free (loop);
1512}
1513
1514void
1515ev_loop_fork (EV_P)
1516{
1517 postfork = 1; /* must be in line with ev_default_fork */
1518}
1519 2075
1520#if EV_VERIFY 2076#if EV_VERIFY
1521static void noinline 2077static void noinline ecb_cold
1522verify_watcher (EV_P_ W w) 2078verify_watcher (EV_P_ W w)
1523{ 2079{
1524 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2080 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1525 2081
1526 if (w->pending) 2082 if (w->pending)
1527 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2083 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1528} 2084}
1529 2085
1530static void noinline 2086static void noinline ecb_cold
1531verify_heap (EV_P_ ANHE *heap, int N) 2087verify_heap (EV_P_ ANHE *heap, int N)
1532{ 2088{
1533 int i; 2089 int i;
1534 2090
1535 for (i = HEAP0; i < N + HEAP0; ++i) 2091 for (i = HEAP0; i < N + HEAP0; ++i)
1536 { 2092 {
1537 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 2093 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1538 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 2094 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1539 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 2095 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1540 2096
1541 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2097 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1542 } 2098 }
1543} 2099}
1544 2100
1545static void noinline 2101static void noinline ecb_cold
1546array_verify (EV_P_ W *ws, int cnt) 2102array_verify (EV_P_ W *ws, int cnt)
1547{ 2103{
1548 while (cnt--) 2104 while (cnt--)
1549 { 2105 {
1550 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2106 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1551 verify_watcher (EV_A_ ws [cnt]); 2107 verify_watcher (EV_A_ ws [cnt]);
1552 } 2108 }
1553} 2109}
1554#endif 2110#endif
1555 2111
1556void 2112#if EV_FEATURE_API
2113void ecb_cold
1557ev_loop_verify (EV_P) 2114ev_verify (EV_P)
1558{ 2115{
1559#if EV_VERIFY 2116#if EV_VERIFY
1560 int i; 2117 int i;
1561 WL w; 2118 WL w;
1562 2119
1563 assert (activecnt >= -1); 2120 assert (activecnt >= -1);
1564 2121
1565 assert (fdchangemax >= fdchangecnt); 2122 assert (fdchangemax >= fdchangecnt);
1566 for (i = 0; i < fdchangecnt; ++i) 2123 for (i = 0; i < fdchangecnt; ++i)
1567 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 2124 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1568 2125
1569 assert (anfdmax >= 0); 2126 assert (anfdmax >= 0);
1570 for (i = 0; i < anfdmax; ++i) 2127 for (i = 0; i < anfdmax; ++i)
1571 for (w = anfds [i].head; w; w = w->next) 2128 for (w = anfds [i].head; w; w = w->next)
1572 { 2129 {
1573 verify_watcher (EV_A_ (W)w); 2130 verify_watcher (EV_A_ (W)w);
1574 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 2131 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1575 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2132 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1576 } 2133 }
1577 2134
1578 assert (timermax >= timercnt); 2135 assert (timermax >= timercnt);
1579 verify_heap (EV_A_ timers, timercnt); 2136 verify_heap (EV_A_ timers, timercnt);
1580 2137
… …
1596#if EV_FORK_ENABLE 2153#if EV_FORK_ENABLE
1597 assert (forkmax >= forkcnt); 2154 assert (forkmax >= forkcnt);
1598 array_verify (EV_A_ (W *)forks, forkcnt); 2155 array_verify (EV_A_ (W *)forks, forkcnt);
1599#endif 2156#endif
1600 2157
2158#if EV_CLEANUP_ENABLE
2159 assert (cleanupmax >= cleanupcnt);
2160 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2161#endif
2162
1601#if EV_ASYNC_ENABLE 2163#if EV_ASYNC_ENABLE
1602 assert (asyncmax >= asynccnt); 2164 assert (asyncmax >= asynccnt);
1603 array_verify (EV_A_ (W *)asyncs, asynccnt); 2165 array_verify (EV_A_ (W *)asyncs, asynccnt);
1604#endif 2166#endif
1605 2167
2168#if EV_PREPARE_ENABLE
1606 assert (preparemax >= preparecnt); 2169 assert (preparemax >= preparecnt);
1607 array_verify (EV_A_ (W *)prepares, preparecnt); 2170 array_verify (EV_A_ (W *)prepares, preparecnt);
2171#endif
1608 2172
2173#if EV_CHECK_ENABLE
1609 assert (checkmax >= checkcnt); 2174 assert (checkmax >= checkcnt);
1610 array_verify (EV_A_ (W *)checks, checkcnt); 2175 array_verify (EV_A_ (W *)checks, checkcnt);
2176#endif
1611 2177
1612# if 0 2178# if 0
2179#if EV_CHILD_ENABLE
1613 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2180 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1614 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2181 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2182#endif
1615# endif 2183# endif
1616#endif 2184#endif
1617} 2185}
1618 2186#endif
1619#endif /* multiplicity */
1620 2187
1621#if EV_MULTIPLICITY 2188#if EV_MULTIPLICITY
1622struct ev_loop * 2189struct ev_loop * ecb_cold
1623ev_default_loop_init (unsigned int flags)
1624#else 2190#else
1625int 2191int
2192#endif
1626ev_default_loop (unsigned int flags) 2193ev_default_loop (unsigned int flags)
1627#endif
1628{ 2194{
1629 if (!ev_default_loop_ptr) 2195 if (!ev_default_loop_ptr)
1630 { 2196 {
1631#if EV_MULTIPLICITY 2197#if EV_MULTIPLICITY
1632 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2198 EV_P = ev_default_loop_ptr = &default_loop_struct;
1633#else 2199#else
1634 ev_default_loop_ptr = 1; 2200 ev_default_loop_ptr = 1;
1635#endif 2201#endif
1636 2202
1637 loop_init (EV_A_ flags); 2203 loop_init (EV_A_ flags);
1638 2204
1639 if (ev_backend (EV_A)) 2205 if (ev_backend (EV_A))
1640 { 2206 {
1641#ifndef _WIN32 2207#if EV_CHILD_ENABLE
1642 ev_signal_init (&childev, childcb, SIGCHLD); 2208 ev_signal_init (&childev, childcb, SIGCHLD);
1643 ev_set_priority (&childev, EV_MAXPRI); 2209 ev_set_priority (&childev, EV_MAXPRI);
1644 ev_signal_start (EV_A_ &childev); 2210 ev_signal_start (EV_A_ &childev);
1645 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2211 ev_unref (EV_A); /* child watcher should not keep loop alive */
1646#endif 2212#endif
… …
1651 2217
1652 return ev_default_loop_ptr; 2218 return ev_default_loop_ptr;
1653} 2219}
1654 2220
1655void 2221void
1656ev_default_destroy (void) 2222ev_loop_fork (EV_P)
1657{ 2223{
1658#if EV_MULTIPLICITY
1659 struct ev_loop *loop = ev_default_loop_ptr;
1660#endif
1661
1662#ifndef _WIN32
1663 ev_ref (EV_A); /* child watcher */
1664 ev_signal_stop (EV_A_ &childev);
1665#endif
1666
1667 loop_destroy (EV_A);
1668}
1669
1670void
1671ev_default_fork (void)
1672{
1673#if EV_MULTIPLICITY
1674 struct ev_loop *loop = ev_default_loop_ptr;
1675#endif
1676
1677 if (backend)
1678 postfork = 1; /* must be in line with ev_loop_fork */ 2224 postfork = 1; /* must be in line with ev_default_fork */
1679} 2225}
1680 2226
1681/*****************************************************************************/ 2227/*****************************************************************************/
1682 2228
1683void 2229void
1684ev_invoke (EV_P_ void *w, int revents) 2230ev_invoke (EV_P_ void *w, int revents)
1685{ 2231{
1686 EV_CB_INVOKE ((W)w, revents); 2232 EV_CB_INVOKE ((W)w, revents);
1687} 2233}
1688 2234
1689void inline_speed 2235unsigned int
1690call_pending (EV_P) 2236ev_pending_count (EV_P)
2237{
2238 int pri;
2239 unsigned int count = 0;
2240
2241 for (pri = NUMPRI; pri--; )
2242 count += pendingcnt [pri];
2243
2244 return count;
2245}
2246
2247void noinline
2248ev_invoke_pending (EV_P)
1691{ 2249{
1692 int pri; 2250 int pri;
1693 2251
1694 for (pri = NUMPRI; pri--; ) 2252 for (pri = NUMPRI; pri--; )
1695 while (pendingcnt [pri]) 2253 while (pendingcnt [pri])
1696 { 2254 {
1697 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2255 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1698 2256
1699 if (expect_true (p->w))
1700 {
1701 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1702
1703 p->w->pending = 0; 2257 p->w->pending = 0;
1704 EV_CB_INVOKE (p->w, p->events); 2258 EV_CB_INVOKE (p->w, p->events);
1705 EV_FREQUENT_CHECK; 2259 EV_FREQUENT_CHECK;
1706 }
1707 } 2260 }
1708} 2261}
1709 2262
1710#if EV_IDLE_ENABLE 2263#if EV_IDLE_ENABLE
1711void inline_size 2264/* make idle watchers pending. this handles the "call-idle */
2265/* only when higher priorities are idle" logic */
2266inline_size void
1712idle_reify (EV_P) 2267idle_reify (EV_P)
1713{ 2268{
1714 if (expect_false (idleall)) 2269 if (expect_false (idleall))
1715 { 2270 {
1716 int pri; 2271 int pri;
… …
1728 } 2283 }
1729 } 2284 }
1730} 2285}
1731#endif 2286#endif
1732 2287
1733void inline_size 2288/* make timers pending */
2289inline_size void
1734timers_reify (EV_P) 2290timers_reify (EV_P)
1735{ 2291{
1736 EV_FREQUENT_CHECK; 2292 EV_FREQUENT_CHECK;
1737 2293
1738 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2294 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1739 { 2295 {
1740 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2296 do
1741
1742 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1743
1744 /* first reschedule or stop timer */
1745 if (w->repeat)
1746 { 2297 {
2298 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2299
2300 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2301
2302 /* first reschedule or stop timer */
2303 if (w->repeat)
2304 {
1747 ev_at (w) += w->repeat; 2305 ev_at (w) += w->repeat;
1748 if (ev_at (w) < mn_now) 2306 if (ev_at (w) < mn_now)
1749 ev_at (w) = mn_now; 2307 ev_at (w) = mn_now;
1750 2308
1751 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2309 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1752 2310
1753 ANHE_at_cache (timers [HEAP0]); 2311 ANHE_at_cache (timers [HEAP0]);
1754 downheap (timers, timercnt, HEAP0); 2312 downheap (timers, timercnt, HEAP0);
2313 }
2314 else
2315 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2316
2317 EV_FREQUENT_CHECK;
2318 feed_reverse (EV_A_ (W)w);
1755 } 2319 }
1756 else 2320 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1757 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1758 2321
1759 EV_FREQUENT_CHECK; 2322 feed_reverse_done (EV_A_ EV_TIMER);
1760 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1761 } 2323 }
1762} 2324}
1763 2325
1764#if EV_PERIODIC_ENABLE 2326#if EV_PERIODIC_ENABLE
1765void inline_size 2327
2328static void noinline
2329periodic_recalc (EV_P_ ev_periodic *w)
2330{
2331 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2332 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2333
2334 /* the above almost always errs on the low side */
2335 while (at <= ev_rt_now)
2336 {
2337 ev_tstamp nat = at + w->interval;
2338
2339 /* when resolution fails us, we use ev_rt_now */
2340 if (expect_false (nat == at))
2341 {
2342 at = ev_rt_now;
2343 break;
2344 }
2345
2346 at = nat;
2347 }
2348
2349 ev_at (w) = at;
2350}
2351
2352/* make periodics pending */
2353inline_size void
1766periodics_reify (EV_P) 2354periodics_reify (EV_P)
1767{ 2355{
1768 EV_FREQUENT_CHECK; 2356 EV_FREQUENT_CHECK;
1769 2357
1770 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2358 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1771 { 2359 {
1772 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2360 int feed_count = 0;
1773 2361
1774 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2362 do
1775
1776 /* first reschedule or stop timer */
1777 if (w->reschedule_cb)
1778 { 2363 {
2364 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2365
2366 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2367
2368 /* first reschedule or stop timer */
2369 if (w->reschedule_cb)
2370 {
1779 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2371 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1780 2372
1781 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2373 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1782 2374
1783 ANHE_at_cache (periodics [HEAP0]); 2375 ANHE_at_cache (periodics [HEAP0]);
1784 downheap (periodics, periodiccnt, HEAP0); 2376 downheap (periodics, periodiccnt, HEAP0);
2377 }
2378 else if (w->interval)
2379 {
2380 periodic_recalc (EV_A_ w);
2381 ANHE_at_cache (periodics [HEAP0]);
2382 downheap (periodics, periodiccnt, HEAP0);
2383 }
2384 else
2385 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2386
2387 EV_FREQUENT_CHECK;
2388 feed_reverse (EV_A_ (W)w);
1785 } 2389 }
1786 else if (w->interval) 2390 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1787 {
1788 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1789 /* if next trigger time is not sufficiently in the future, put it there */
1790 /* this might happen because of floating point inexactness */
1791 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1792 {
1793 ev_at (w) += w->interval;
1794 2391
1795 /* if interval is unreasonably low we might still have a time in the past */
1796 /* so correct this. this will make the periodic very inexact, but the user */
1797 /* has effectively asked to get triggered more often than possible */
1798 if (ev_at (w) < ev_rt_now)
1799 ev_at (w) = ev_rt_now;
1800 }
1801
1802 ANHE_at_cache (periodics [HEAP0]);
1803 downheap (periodics, periodiccnt, HEAP0);
1804 }
1805 else
1806 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1807
1808 EV_FREQUENT_CHECK;
1809 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2392 feed_reverse_done (EV_A_ EV_PERIODIC);
1810 } 2393 }
1811} 2394}
1812 2395
2396/* simply recalculate all periodics */
2397/* TODO: maybe ensure that at least one event happens when jumping forward? */
1813static void noinline 2398static void noinline ecb_cold
1814periodics_reschedule (EV_P) 2399periodics_reschedule (EV_P)
1815{ 2400{
1816 int i; 2401 int i;
1817 2402
1818 /* adjust periodics after time jump */ 2403 /* adjust periodics after time jump */
… …
1821 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2406 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1822 2407
1823 if (w->reschedule_cb) 2408 if (w->reschedule_cb)
1824 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2409 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1825 else if (w->interval) 2410 else if (w->interval)
1826 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2411 periodic_recalc (EV_A_ w);
1827 2412
1828 ANHE_at_cache (periodics [i]); 2413 ANHE_at_cache (periodics [i]);
1829 } 2414 }
1830 2415
1831 reheap (periodics, periodiccnt); 2416 reheap (periodics, periodiccnt);
1832} 2417}
1833#endif 2418#endif
1834 2419
1835void inline_speed 2420/* adjust all timers by a given offset */
2421static void noinline ecb_cold
2422timers_reschedule (EV_P_ ev_tstamp adjust)
2423{
2424 int i;
2425
2426 for (i = 0; i < timercnt; ++i)
2427 {
2428 ANHE *he = timers + i + HEAP0;
2429 ANHE_w (*he)->at += adjust;
2430 ANHE_at_cache (*he);
2431 }
2432}
2433
2434/* fetch new monotonic and realtime times from the kernel */
2435/* also detect if there was a timejump, and act accordingly */
2436inline_speed void
1836time_update (EV_P_ ev_tstamp max_block) 2437time_update (EV_P_ ev_tstamp max_block)
1837{ 2438{
1838 int i;
1839
1840#if EV_USE_MONOTONIC 2439#if EV_USE_MONOTONIC
1841 if (expect_true (have_monotonic)) 2440 if (expect_true (have_monotonic))
1842 { 2441 {
2442 int i;
1843 ev_tstamp odiff = rtmn_diff; 2443 ev_tstamp odiff = rtmn_diff;
1844 2444
1845 mn_now = get_clock (); 2445 mn_now = get_clock ();
1846 2446
1847 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2447 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1863 * doesn't hurt either as we only do this on time-jumps or 2463 * doesn't hurt either as we only do this on time-jumps or
1864 * in the unlikely event of having been preempted here. 2464 * in the unlikely event of having been preempted here.
1865 */ 2465 */
1866 for (i = 4; --i; ) 2466 for (i = 4; --i; )
1867 { 2467 {
2468 ev_tstamp diff;
1868 rtmn_diff = ev_rt_now - mn_now; 2469 rtmn_diff = ev_rt_now - mn_now;
1869 2470
2471 diff = odiff - rtmn_diff;
2472
1870 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2473 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1871 return; /* all is well */ 2474 return; /* all is well */
1872 2475
1873 ev_rt_now = ev_time (); 2476 ev_rt_now = ev_time ();
1874 mn_now = get_clock (); 2477 mn_now = get_clock ();
1875 now_floor = mn_now; 2478 now_floor = mn_now;
1876 } 2479 }
1877 2480
2481 /* no timer adjustment, as the monotonic clock doesn't jump */
2482 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1878# if EV_PERIODIC_ENABLE 2483# if EV_PERIODIC_ENABLE
1879 periodics_reschedule (EV_A); 2484 periodics_reschedule (EV_A);
1880# endif 2485# endif
1881 /* no timer adjustment, as the monotonic clock doesn't jump */
1882 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1883 } 2486 }
1884 else 2487 else
1885#endif 2488#endif
1886 { 2489 {
1887 ev_rt_now = ev_time (); 2490 ev_rt_now = ev_time ();
1888 2491
1889 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2492 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1890 { 2493 {
2494 /* adjust timers. this is easy, as the offset is the same for all of them */
2495 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1891#if EV_PERIODIC_ENABLE 2496#if EV_PERIODIC_ENABLE
1892 periodics_reschedule (EV_A); 2497 periodics_reschedule (EV_A);
1893#endif 2498#endif
1894 /* adjust timers. this is easy, as the offset is the same for all of them */
1895 for (i = 0; i < timercnt; ++i)
1896 {
1897 ANHE *he = timers + i + HEAP0;
1898 ANHE_w (*he)->at += ev_rt_now - mn_now;
1899 ANHE_at_cache (*he);
1900 }
1901 } 2499 }
1902 2500
1903 mn_now = ev_rt_now; 2501 mn_now = ev_rt_now;
1904 } 2502 }
1905} 2503}
1906 2504
1907void 2505void
1908ev_ref (EV_P)
1909{
1910 ++activecnt;
1911}
1912
1913void
1914ev_unref (EV_P)
1915{
1916 --activecnt;
1917}
1918
1919void
1920ev_now_update (EV_P)
1921{
1922 time_update (EV_A_ 1e100);
1923}
1924
1925static int loop_done;
1926
1927void
1928ev_loop (EV_P_ int flags) 2506ev_run (EV_P_ int flags)
1929{ 2507{
2508#if EV_FEATURE_API
2509 ++loop_depth;
2510#endif
2511
2512 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2513
1930 loop_done = EVUNLOOP_CANCEL; 2514 loop_done = EVBREAK_CANCEL;
1931 2515
1932 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2516 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1933 2517
1934 do 2518 do
1935 { 2519 {
1936#if EV_VERIFY >= 2 2520#if EV_VERIFY >= 2
1937 ev_loop_verify (EV_A); 2521 ev_verify (EV_A);
1938#endif 2522#endif
1939 2523
1940#ifndef _WIN32 2524#ifndef _WIN32
1941 if (expect_false (curpid)) /* penalise the forking check even more */ 2525 if (expect_false (curpid)) /* penalise the forking check even more */
1942 if (expect_false (getpid () != curpid)) 2526 if (expect_false (getpid () != curpid))
… …
1950 /* we might have forked, so queue fork handlers */ 2534 /* we might have forked, so queue fork handlers */
1951 if (expect_false (postfork)) 2535 if (expect_false (postfork))
1952 if (forkcnt) 2536 if (forkcnt)
1953 { 2537 {
1954 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2538 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1955 call_pending (EV_A); 2539 EV_INVOKE_PENDING;
1956 } 2540 }
1957#endif 2541#endif
1958 2542
2543#if EV_PREPARE_ENABLE
1959 /* queue prepare watchers (and execute them) */ 2544 /* queue prepare watchers (and execute them) */
1960 if (expect_false (preparecnt)) 2545 if (expect_false (preparecnt))
1961 { 2546 {
1962 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2547 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1963 call_pending (EV_A); 2548 EV_INVOKE_PENDING;
1964 } 2549 }
2550#endif
1965 2551
1966 if (expect_false (!activecnt)) 2552 if (expect_false (loop_done))
1967 break; 2553 break;
1968 2554
1969 /* we might have forked, so reify kernel state if necessary */ 2555 /* we might have forked, so reify kernel state if necessary */
1970 if (expect_false (postfork)) 2556 if (expect_false (postfork))
1971 loop_fork (EV_A); 2557 loop_fork (EV_A);
… …
1976 /* calculate blocking time */ 2562 /* calculate blocking time */
1977 { 2563 {
1978 ev_tstamp waittime = 0.; 2564 ev_tstamp waittime = 0.;
1979 ev_tstamp sleeptime = 0.; 2565 ev_tstamp sleeptime = 0.;
1980 2566
2567 /* remember old timestamp for io_blocktime calculation */
2568 ev_tstamp prev_mn_now = mn_now;
2569
2570 /* update time to cancel out callback processing overhead */
2571 time_update (EV_A_ 1e100);
2572
2573 /* from now on, we want a pipe-wake-up */
2574 pipe_write_wanted = 1;
2575
1981 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2576 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1982 { 2577 {
1983 /* update time to cancel out callback processing overhead */
1984 time_update (EV_A_ 1e100);
1985
1986 waittime = MAX_BLOCKTIME; 2578 waittime = MAX_BLOCKTIME;
1987 2579
1988 if (timercnt) 2580 if (timercnt)
1989 { 2581 {
1990 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2582 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1991 if (waittime > to) waittime = to; 2583 if (waittime > to) waittime = to;
1992 } 2584 }
1993 2585
1994#if EV_PERIODIC_ENABLE 2586#if EV_PERIODIC_ENABLE
1995 if (periodiccnt) 2587 if (periodiccnt)
1996 { 2588 {
1997 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2589 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1998 if (waittime > to) waittime = to; 2590 if (waittime > to) waittime = to;
1999 } 2591 }
2000#endif 2592#endif
2001 2593
2594 /* don't let timeouts decrease the waittime below timeout_blocktime */
2002 if (expect_false (waittime < timeout_blocktime)) 2595 if (expect_false (waittime < timeout_blocktime))
2003 waittime = timeout_blocktime; 2596 waittime = timeout_blocktime;
2004 2597
2005 sleeptime = waittime - backend_fudge; 2598 /* at this point, we NEED to wait, so we have to ensure */
2599 /* to pass a minimum nonzero value to the backend */
2600 if (expect_false (waittime < backend_mintime))
2601 waittime = backend_mintime;
2006 2602
2603 /* extra check because io_blocktime is commonly 0 */
2007 if (expect_true (sleeptime > io_blocktime)) 2604 if (expect_false (io_blocktime))
2008 sleeptime = io_blocktime;
2009
2010 if (sleeptime)
2011 { 2605 {
2606 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2607
2608 if (sleeptime > waittime - backend_mintime)
2609 sleeptime = waittime - backend_mintime;
2610
2611 if (expect_true (sleeptime > 0.))
2612 {
2012 ev_sleep (sleeptime); 2613 ev_sleep (sleeptime);
2013 waittime -= sleeptime; 2614 waittime -= sleeptime;
2615 }
2014 } 2616 }
2015 } 2617 }
2016 2618
2619#if EV_FEATURE_API
2017 ++loop_count; 2620 ++loop_count;
2621#endif
2622 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2018 backend_poll (EV_A_ waittime); 2623 backend_poll (EV_A_ waittime);
2624 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2625
2626 pipe_write_wanted = 0;
2627
2628 if (pipe_write_skipped)
2629 {
2630 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2631 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2632 }
2633
2019 2634
2020 /* update ev_rt_now, do magic */ 2635 /* update ev_rt_now, do magic */
2021 time_update (EV_A_ waittime + sleeptime); 2636 time_update (EV_A_ waittime + sleeptime);
2022 } 2637 }
2023 2638
… …
2030#if EV_IDLE_ENABLE 2645#if EV_IDLE_ENABLE
2031 /* queue idle watchers unless other events are pending */ 2646 /* queue idle watchers unless other events are pending */
2032 idle_reify (EV_A); 2647 idle_reify (EV_A);
2033#endif 2648#endif
2034 2649
2650#if EV_CHECK_ENABLE
2035 /* queue check watchers, to be executed first */ 2651 /* queue check watchers, to be executed first */
2036 if (expect_false (checkcnt)) 2652 if (expect_false (checkcnt))
2037 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2653 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2654#endif
2038 2655
2039 call_pending (EV_A); 2656 EV_INVOKE_PENDING;
2040 } 2657 }
2041 while (expect_true ( 2658 while (expect_true (
2042 activecnt 2659 activecnt
2043 && !loop_done 2660 && !loop_done
2044 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2661 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2045 )); 2662 ));
2046 2663
2047 if (loop_done == EVUNLOOP_ONE) 2664 if (loop_done == EVBREAK_ONE)
2048 loop_done = EVUNLOOP_CANCEL; 2665 loop_done = EVBREAK_CANCEL;
2666
2667#if EV_FEATURE_API
2668 --loop_depth;
2669#endif
2049} 2670}
2050 2671
2051void 2672void
2052ev_unloop (EV_P_ int how) 2673ev_break (EV_P_ int how)
2053{ 2674{
2054 loop_done = how; 2675 loop_done = how;
2055} 2676}
2056 2677
2678void
2679ev_ref (EV_P)
2680{
2681 ++activecnt;
2682}
2683
2684void
2685ev_unref (EV_P)
2686{
2687 --activecnt;
2688}
2689
2690void
2691ev_now_update (EV_P)
2692{
2693 time_update (EV_A_ 1e100);
2694}
2695
2696void
2697ev_suspend (EV_P)
2698{
2699 ev_now_update (EV_A);
2700}
2701
2702void
2703ev_resume (EV_P)
2704{
2705 ev_tstamp mn_prev = mn_now;
2706
2707 ev_now_update (EV_A);
2708 timers_reschedule (EV_A_ mn_now - mn_prev);
2709#if EV_PERIODIC_ENABLE
2710 /* TODO: really do this? */
2711 periodics_reschedule (EV_A);
2712#endif
2713}
2714
2057/*****************************************************************************/ 2715/*****************************************************************************/
2716/* singly-linked list management, used when the expected list length is short */
2058 2717
2059void inline_size 2718inline_size void
2060wlist_add (WL *head, WL elem) 2719wlist_add (WL *head, WL elem)
2061{ 2720{
2062 elem->next = *head; 2721 elem->next = *head;
2063 *head = elem; 2722 *head = elem;
2064} 2723}
2065 2724
2066void inline_size 2725inline_size void
2067wlist_del (WL *head, WL elem) 2726wlist_del (WL *head, WL elem)
2068{ 2727{
2069 while (*head) 2728 while (*head)
2070 { 2729 {
2071 if (*head == elem) 2730 if (expect_true (*head == elem))
2072 { 2731 {
2073 *head = elem->next; 2732 *head = elem->next;
2074 return; 2733 break;
2075 } 2734 }
2076 2735
2077 head = &(*head)->next; 2736 head = &(*head)->next;
2078 } 2737 }
2079} 2738}
2080 2739
2081void inline_speed 2740/* internal, faster, version of ev_clear_pending */
2741inline_speed void
2082clear_pending (EV_P_ W w) 2742clear_pending (EV_P_ W w)
2083{ 2743{
2084 if (w->pending) 2744 if (w->pending)
2085 { 2745 {
2086 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2746 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2087 w->pending = 0; 2747 w->pending = 0;
2088 } 2748 }
2089} 2749}
2090 2750
2091int 2751int
… …
2095 int pending = w_->pending; 2755 int pending = w_->pending;
2096 2756
2097 if (expect_true (pending)) 2757 if (expect_true (pending))
2098 { 2758 {
2099 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2759 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2760 p->w = (W)&pending_w;
2100 w_->pending = 0; 2761 w_->pending = 0;
2101 p->w = 0;
2102 return p->events; 2762 return p->events;
2103 } 2763 }
2104 else 2764 else
2105 return 0; 2765 return 0;
2106} 2766}
2107 2767
2108void inline_size 2768inline_size void
2109pri_adjust (EV_P_ W w) 2769pri_adjust (EV_P_ W w)
2110{ 2770{
2111 int pri = w->priority; 2771 int pri = ev_priority (w);
2112 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2772 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2113 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2773 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2114 w->priority = pri; 2774 ev_set_priority (w, pri);
2115} 2775}
2116 2776
2117void inline_speed 2777inline_speed void
2118ev_start (EV_P_ W w, int active) 2778ev_start (EV_P_ W w, int active)
2119{ 2779{
2120 pri_adjust (EV_A_ w); 2780 pri_adjust (EV_A_ w);
2121 w->active = active; 2781 w->active = active;
2122 ev_ref (EV_A); 2782 ev_ref (EV_A);
2123} 2783}
2124 2784
2125void inline_size 2785inline_size void
2126ev_stop (EV_P_ W w) 2786ev_stop (EV_P_ W w)
2127{ 2787{
2128 ev_unref (EV_A); 2788 ev_unref (EV_A);
2129 w->active = 0; 2789 w->active = 0;
2130} 2790}
… …
2137 int fd = w->fd; 2797 int fd = w->fd;
2138 2798
2139 if (expect_false (ev_is_active (w))) 2799 if (expect_false (ev_is_active (w)))
2140 return; 2800 return;
2141 2801
2142 assert (("ev_io_start called with negative fd", fd >= 0)); 2802 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2803 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2143 2804
2144 EV_FREQUENT_CHECK; 2805 EV_FREQUENT_CHECK;
2145 2806
2146 ev_start (EV_A_ (W)w, 1); 2807 ev_start (EV_A_ (W)w, 1);
2147 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2808 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2148 wlist_add (&anfds[fd].head, (WL)w); 2809 wlist_add (&anfds[fd].head, (WL)w);
2149 2810
2150 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2811 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2151 w->events &= ~EV_IOFDSET; 2812 w->events &= ~EV__IOFDSET;
2152 2813
2153 EV_FREQUENT_CHECK; 2814 EV_FREQUENT_CHECK;
2154} 2815}
2155 2816
2156void noinline 2817void noinline
… …
2158{ 2819{
2159 clear_pending (EV_A_ (W)w); 2820 clear_pending (EV_A_ (W)w);
2160 if (expect_false (!ev_is_active (w))) 2821 if (expect_false (!ev_is_active (w)))
2161 return; 2822 return;
2162 2823
2163 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2824 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2164 2825
2165 EV_FREQUENT_CHECK; 2826 EV_FREQUENT_CHECK;
2166 2827
2167 wlist_del (&anfds[w->fd].head, (WL)w); 2828 wlist_del (&anfds[w->fd].head, (WL)w);
2168 ev_stop (EV_A_ (W)w); 2829 ev_stop (EV_A_ (W)w);
2169 2830
2170 fd_change (EV_A_ w->fd, 1); 2831 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2171 2832
2172 EV_FREQUENT_CHECK; 2833 EV_FREQUENT_CHECK;
2173} 2834}
2174 2835
2175void noinline 2836void noinline
… …
2178 if (expect_false (ev_is_active (w))) 2839 if (expect_false (ev_is_active (w)))
2179 return; 2840 return;
2180 2841
2181 ev_at (w) += mn_now; 2842 ev_at (w) += mn_now;
2182 2843
2183 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2844 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2184 2845
2185 EV_FREQUENT_CHECK; 2846 EV_FREQUENT_CHECK;
2186 2847
2187 ++timercnt; 2848 ++timercnt;
2188 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2849 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2191 ANHE_at_cache (timers [ev_active (w)]); 2852 ANHE_at_cache (timers [ev_active (w)]);
2192 upheap (timers, ev_active (w)); 2853 upheap (timers, ev_active (w));
2193 2854
2194 EV_FREQUENT_CHECK; 2855 EV_FREQUENT_CHECK;
2195 2856
2196 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2857 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2197} 2858}
2198 2859
2199void noinline 2860void noinline
2200ev_timer_stop (EV_P_ ev_timer *w) 2861ev_timer_stop (EV_P_ ev_timer *w)
2201{ 2862{
… …
2206 EV_FREQUENT_CHECK; 2867 EV_FREQUENT_CHECK;
2207 2868
2208 { 2869 {
2209 int active = ev_active (w); 2870 int active = ev_active (w);
2210 2871
2211 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2872 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2212 2873
2213 --timercnt; 2874 --timercnt;
2214 2875
2215 if (expect_true (active < timercnt + HEAP0)) 2876 if (expect_true (active < timercnt + HEAP0))
2216 { 2877 {
2217 timers [active] = timers [timercnt + HEAP0]; 2878 timers [active] = timers [timercnt + HEAP0];
2218 adjustheap (timers, timercnt, active); 2879 adjustheap (timers, timercnt, active);
2219 } 2880 }
2220 } 2881 }
2221 2882
2222 EV_FREQUENT_CHECK;
2223
2224 ev_at (w) -= mn_now; 2883 ev_at (w) -= mn_now;
2225 2884
2226 ev_stop (EV_A_ (W)w); 2885 ev_stop (EV_A_ (W)w);
2886
2887 EV_FREQUENT_CHECK;
2227} 2888}
2228 2889
2229void noinline 2890void noinline
2230ev_timer_again (EV_P_ ev_timer *w) 2891ev_timer_again (EV_P_ ev_timer *w)
2231{ 2892{
… …
2249 } 2910 }
2250 2911
2251 EV_FREQUENT_CHECK; 2912 EV_FREQUENT_CHECK;
2252} 2913}
2253 2914
2915ev_tstamp
2916ev_timer_remaining (EV_P_ ev_timer *w)
2917{
2918 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2919}
2920
2254#if EV_PERIODIC_ENABLE 2921#if EV_PERIODIC_ENABLE
2255void noinline 2922void noinline
2256ev_periodic_start (EV_P_ ev_periodic *w) 2923ev_periodic_start (EV_P_ ev_periodic *w)
2257{ 2924{
2258 if (expect_false (ev_is_active (w))) 2925 if (expect_false (ev_is_active (w)))
… …
2260 2927
2261 if (w->reschedule_cb) 2928 if (w->reschedule_cb)
2262 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2929 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2263 else if (w->interval) 2930 else if (w->interval)
2264 { 2931 {
2265 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2932 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2266 /* this formula differs from the one in periodic_reify because we do not always round up */ 2933 periodic_recalc (EV_A_ w);
2267 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2268 } 2934 }
2269 else 2935 else
2270 ev_at (w) = w->offset; 2936 ev_at (w) = w->offset;
2271 2937
2272 EV_FREQUENT_CHECK; 2938 EV_FREQUENT_CHECK;
… …
2278 ANHE_at_cache (periodics [ev_active (w)]); 2944 ANHE_at_cache (periodics [ev_active (w)]);
2279 upheap (periodics, ev_active (w)); 2945 upheap (periodics, ev_active (w));
2280 2946
2281 EV_FREQUENT_CHECK; 2947 EV_FREQUENT_CHECK;
2282 2948
2283 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2949 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2284} 2950}
2285 2951
2286void noinline 2952void noinline
2287ev_periodic_stop (EV_P_ ev_periodic *w) 2953ev_periodic_stop (EV_P_ ev_periodic *w)
2288{ 2954{
… …
2293 EV_FREQUENT_CHECK; 2959 EV_FREQUENT_CHECK;
2294 2960
2295 { 2961 {
2296 int active = ev_active (w); 2962 int active = ev_active (w);
2297 2963
2298 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2964 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2299 2965
2300 --periodiccnt; 2966 --periodiccnt;
2301 2967
2302 if (expect_true (active < periodiccnt + HEAP0)) 2968 if (expect_true (active < periodiccnt + HEAP0))
2303 { 2969 {
2304 periodics [active] = periodics [periodiccnt + HEAP0]; 2970 periodics [active] = periodics [periodiccnt + HEAP0];
2305 adjustheap (periodics, periodiccnt, active); 2971 adjustheap (periodics, periodiccnt, active);
2306 } 2972 }
2307 } 2973 }
2308 2974
2309 EV_FREQUENT_CHECK;
2310
2311 ev_stop (EV_A_ (W)w); 2975 ev_stop (EV_A_ (W)w);
2976
2977 EV_FREQUENT_CHECK;
2312} 2978}
2313 2979
2314void noinline 2980void noinline
2315ev_periodic_again (EV_P_ ev_periodic *w) 2981ev_periodic_again (EV_P_ ev_periodic *w)
2316{ 2982{
… …
2322 2988
2323#ifndef SA_RESTART 2989#ifndef SA_RESTART
2324# define SA_RESTART 0 2990# define SA_RESTART 0
2325#endif 2991#endif
2326 2992
2993#if EV_SIGNAL_ENABLE
2994
2327void noinline 2995void noinline
2328ev_signal_start (EV_P_ ev_signal *w) 2996ev_signal_start (EV_P_ ev_signal *w)
2329{ 2997{
2330#if EV_MULTIPLICITY
2331 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2332#endif
2333 if (expect_false (ev_is_active (w))) 2998 if (expect_false (ev_is_active (w)))
2334 return; 2999 return;
2335 3000
2336 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3001 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2337 3002
2338 evpipe_init (EV_A); 3003#if EV_MULTIPLICITY
3004 assert (("libev: a signal must not be attached to two different loops",
3005 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2339 3006
2340 EV_FREQUENT_CHECK; 3007 signals [w->signum - 1].loop = EV_A;
3008#endif
2341 3009
3010 EV_FREQUENT_CHECK;
3011
3012#if EV_USE_SIGNALFD
3013 if (sigfd == -2)
2342 { 3014 {
2343#ifndef _WIN32 3015 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2344 sigset_t full, prev; 3016 if (sigfd < 0 && errno == EINVAL)
2345 sigfillset (&full); 3017 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2346 sigprocmask (SIG_SETMASK, &full, &prev);
2347#endif
2348 3018
2349 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3019 if (sigfd >= 0)
3020 {
3021 fd_intern (sigfd); /* doing it twice will not hurt */
2350 3022
2351#ifndef _WIN32 3023 sigemptyset (&sigfd_set);
2352 sigprocmask (SIG_SETMASK, &prev, 0); 3024
2353#endif 3025 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3026 ev_set_priority (&sigfd_w, EV_MAXPRI);
3027 ev_io_start (EV_A_ &sigfd_w);
3028 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3029 }
2354 } 3030 }
3031
3032 if (sigfd >= 0)
3033 {
3034 /* TODO: check .head */
3035 sigaddset (&sigfd_set, w->signum);
3036 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3037
3038 signalfd (sigfd, &sigfd_set, 0);
3039 }
3040#endif
2355 3041
2356 ev_start (EV_A_ (W)w, 1); 3042 ev_start (EV_A_ (W)w, 1);
2357 wlist_add (&signals [w->signum - 1].head, (WL)w); 3043 wlist_add (&signals [w->signum - 1].head, (WL)w);
2358 3044
2359 if (!((WL)w)->next) 3045 if (!((WL)w)->next)
3046# if EV_USE_SIGNALFD
3047 if (sigfd < 0) /*TODO*/
3048# endif
2360 { 3049 {
2361#if _WIN32 3050# ifdef _WIN32
3051 evpipe_init (EV_A);
3052
2362 signal (w->signum, ev_sighandler); 3053 signal (w->signum, ev_sighandler);
2363#else 3054# else
2364 struct sigaction sa; 3055 struct sigaction sa;
3056
3057 evpipe_init (EV_A);
3058
2365 sa.sa_handler = ev_sighandler; 3059 sa.sa_handler = ev_sighandler;
2366 sigfillset (&sa.sa_mask); 3060 sigfillset (&sa.sa_mask);
2367 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3061 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2368 sigaction (w->signum, &sa, 0); 3062 sigaction (w->signum, &sa, 0);
3063
3064 if (origflags & EVFLAG_NOSIGMASK)
3065 {
3066 sigemptyset (&sa.sa_mask);
3067 sigaddset (&sa.sa_mask, w->signum);
3068 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3069 }
2369#endif 3070#endif
2370 } 3071 }
2371 3072
2372 EV_FREQUENT_CHECK; 3073 EV_FREQUENT_CHECK;
2373} 3074}
2374 3075
2375void noinline 3076void noinline
… …
2383 3084
2384 wlist_del (&signals [w->signum - 1].head, (WL)w); 3085 wlist_del (&signals [w->signum - 1].head, (WL)w);
2385 ev_stop (EV_A_ (W)w); 3086 ev_stop (EV_A_ (W)w);
2386 3087
2387 if (!signals [w->signum - 1].head) 3088 if (!signals [w->signum - 1].head)
3089 {
3090#if EV_MULTIPLICITY
3091 signals [w->signum - 1].loop = 0; /* unattach from signal */
3092#endif
3093#if EV_USE_SIGNALFD
3094 if (sigfd >= 0)
3095 {
3096 sigset_t ss;
3097
3098 sigemptyset (&ss);
3099 sigaddset (&ss, w->signum);
3100 sigdelset (&sigfd_set, w->signum);
3101
3102 signalfd (sigfd, &sigfd_set, 0);
3103 sigprocmask (SIG_UNBLOCK, &ss, 0);
3104 }
3105 else
3106#endif
2388 signal (w->signum, SIG_DFL); 3107 signal (w->signum, SIG_DFL);
3108 }
2389 3109
2390 EV_FREQUENT_CHECK; 3110 EV_FREQUENT_CHECK;
2391} 3111}
3112
3113#endif
3114
3115#if EV_CHILD_ENABLE
2392 3116
2393void 3117void
2394ev_child_start (EV_P_ ev_child *w) 3118ev_child_start (EV_P_ ev_child *w)
2395{ 3119{
2396#if EV_MULTIPLICITY 3120#if EV_MULTIPLICITY
2397 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3121 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2398#endif 3122#endif
2399 if (expect_false (ev_is_active (w))) 3123 if (expect_false (ev_is_active (w)))
2400 return; 3124 return;
2401 3125
2402 EV_FREQUENT_CHECK; 3126 EV_FREQUENT_CHECK;
2403 3127
2404 ev_start (EV_A_ (W)w, 1); 3128 ev_start (EV_A_ (W)w, 1);
2405 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3129 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2406 3130
2407 EV_FREQUENT_CHECK; 3131 EV_FREQUENT_CHECK;
2408} 3132}
2409 3133
2410void 3134void
… …
2414 if (expect_false (!ev_is_active (w))) 3138 if (expect_false (!ev_is_active (w)))
2415 return; 3139 return;
2416 3140
2417 EV_FREQUENT_CHECK; 3141 EV_FREQUENT_CHECK;
2418 3142
2419 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3143 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2420 ev_stop (EV_A_ (W)w); 3144 ev_stop (EV_A_ (W)w);
2421 3145
2422 EV_FREQUENT_CHECK; 3146 EV_FREQUENT_CHECK;
2423} 3147}
3148
3149#endif
2424 3150
2425#if EV_STAT_ENABLE 3151#if EV_STAT_ENABLE
2426 3152
2427# ifdef _WIN32 3153# ifdef _WIN32
2428# undef lstat 3154# undef lstat
2429# define lstat(a,b) _stati64 (a,b) 3155# define lstat(a,b) _stati64 (a,b)
2430# endif 3156# endif
2431 3157
2432#define DEF_STAT_INTERVAL 5.0074891 3158#define DEF_STAT_INTERVAL 5.0074891
3159#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2433#define MIN_STAT_INTERVAL 0.1074891 3160#define MIN_STAT_INTERVAL 0.1074891
2434 3161
2435static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3162static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2436 3163
2437#if EV_USE_INOTIFY 3164#if EV_USE_INOTIFY
2438# define EV_INOTIFY_BUFSIZE 8192 3165
3166/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3167# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2439 3168
2440static void noinline 3169static void noinline
2441infy_add (EV_P_ ev_stat *w) 3170infy_add (EV_P_ ev_stat *w)
2442{ 3171{
2443 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); 3172 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);
2444 3173
2445 if (w->wd < 0) 3174 if (w->wd >= 0)
3175 {
3176 struct statfs sfs;
3177
3178 /* now local changes will be tracked by inotify, but remote changes won't */
3179 /* unless the filesystem is known to be local, we therefore still poll */
3180 /* also do poll on <2.6.25, but with normal frequency */
3181
3182 if (!fs_2625)
3183 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3184 else if (!statfs (w->path, &sfs)
3185 && (sfs.f_type == 0x1373 /* devfs */
3186 || sfs.f_type == 0xEF53 /* ext2/3 */
3187 || sfs.f_type == 0x3153464a /* jfs */
3188 || sfs.f_type == 0x52654973 /* reiser3 */
3189 || sfs.f_type == 0x01021994 /* tempfs */
3190 || sfs.f_type == 0x58465342 /* xfs */))
3191 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3192 else
3193 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2446 { 3194 }
2447 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3195 else
3196 {
3197 /* can't use inotify, continue to stat */
3198 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2448 3199
2449 /* monitor some parent directory for speedup hints */ 3200 /* if path is not there, monitor some parent directory for speedup hints */
2450 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3201 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2451 /* but an efficiency issue only */ 3202 /* but an efficiency issue only */
2452 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3203 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2453 { 3204 {
2454 char path [4096]; 3205 char path [4096];
2455 strcpy (path, w->path); 3206 strcpy (path, w->path);
… …
2459 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3210 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2460 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3211 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2461 3212
2462 char *pend = strrchr (path, '/'); 3213 char *pend = strrchr (path, '/');
2463 3214
2464 if (!pend) 3215 if (!pend || pend == path)
2465 break; /* whoops, no '/', complain to your admin */ 3216 break;
2466 3217
2467 *pend = 0; 3218 *pend = 0;
2468 w->wd = inotify_add_watch (fs_fd, path, mask); 3219 w->wd = inotify_add_watch (fs_fd, path, mask);
2469 } 3220 }
2470 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3221 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2471 } 3222 }
2472 } 3223 }
2473 else
2474 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2475 3224
2476 if (w->wd >= 0) 3225 if (w->wd >= 0)
2477 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3226 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3227
3228 /* now re-arm timer, if required */
3229 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3230 ev_timer_again (EV_A_ &w->timer);
3231 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2478} 3232}
2479 3233
2480static void noinline 3234static void noinline
2481infy_del (EV_P_ ev_stat *w) 3235infy_del (EV_P_ ev_stat *w)
2482{ 3236{
… …
2485 3239
2486 if (wd < 0) 3240 if (wd < 0)
2487 return; 3241 return;
2488 3242
2489 w->wd = -2; 3243 w->wd = -2;
2490 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3244 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2491 wlist_del (&fs_hash [slot].head, (WL)w); 3245 wlist_del (&fs_hash [slot].head, (WL)w);
2492 3246
2493 /* remove this watcher, if others are watching it, they will rearm */ 3247 /* remove this watcher, if others are watching it, they will rearm */
2494 inotify_rm_watch (fs_fd, wd); 3248 inotify_rm_watch (fs_fd, wd);
2495} 3249}
2496 3250
2497static void noinline 3251static void noinline
2498infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3252infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2499{ 3253{
2500 if (slot < 0) 3254 if (slot < 0)
2501 /* overflow, need to check for all hahs slots */ 3255 /* overflow, need to check for all hash slots */
2502 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3256 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2503 infy_wd (EV_A_ slot, wd, ev); 3257 infy_wd (EV_A_ slot, wd, ev);
2504 else 3258 else
2505 { 3259 {
2506 WL w_; 3260 WL w_;
2507 3261
2508 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3262 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2509 { 3263 {
2510 ev_stat *w = (ev_stat *)w_; 3264 ev_stat *w = (ev_stat *)w_;
2511 w_ = w_->next; /* lets us remove this watcher and all before it */ 3265 w_ = w_->next; /* lets us remove this watcher and all before it */
2512 3266
2513 if (w->wd == wd || wd == -1) 3267 if (w->wd == wd || wd == -1)
2514 { 3268 {
2515 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3269 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2516 { 3270 {
3271 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2517 w->wd = -1; 3272 w->wd = -1;
2518 infy_add (EV_A_ w); /* re-add, no matter what */ 3273 infy_add (EV_A_ w); /* re-add, no matter what */
2519 } 3274 }
2520 3275
2521 stat_timer_cb (EV_A_ &w->timer, 0); 3276 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2526 3281
2527static void 3282static void
2528infy_cb (EV_P_ ev_io *w, int revents) 3283infy_cb (EV_P_ ev_io *w, int revents)
2529{ 3284{
2530 char buf [EV_INOTIFY_BUFSIZE]; 3285 char buf [EV_INOTIFY_BUFSIZE];
2531 struct inotify_event *ev = (struct inotify_event *)buf;
2532 int ofs; 3286 int ofs;
2533 int len = read (fs_fd, buf, sizeof (buf)); 3287 int len = read (fs_fd, buf, sizeof (buf));
2534 3288
2535 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3289 for (ofs = 0; ofs < len; )
3290 {
3291 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2536 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3292 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3293 ofs += sizeof (struct inotify_event) + ev->len;
3294 }
2537} 3295}
2538 3296
2539void inline_size 3297inline_size void ecb_cold
3298ev_check_2625 (EV_P)
3299{
3300 /* kernels < 2.6.25 are borked
3301 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3302 */
3303 if (ev_linux_version () < 0x020619)
3304 return;
3305
3306 fs_2625 = 1;
3307}
3308
3309inline_size int
3310infy_newfd (void)
3311{
3312#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3313 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3314 if (fd >= 0)
3315 return fd;
3316#endif
3317 return inotify_init ();
3318}
3319
3320inline_size void
2540infy_init (EV_P) 3321infy_init (EV_P)
2541{ 3322{
2542 if (fs_fd != -2) 3323 if (fs_fd != -2)
2543 return; 3324 return;
2544 3325
3326 fs_fd = -1;
3327
3328 ev_check_2625 (EV_A);
3329
2545 fs_fd = inotify_init (); 3330 fs_fd = infy_newfd ();
2546 3331
2547 if (fs_fd >= 0) 3332 if (fs_fd >= 0)
2548 { 3333 {
3334 fd_intern (fs_fd);
2549 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3335 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2550 ev_set_priority (&fs_w, EV_MAXPRI); 3336 ev_set_priority (&fs_w, EV_MAXPRI);
2551 ev_io_start (EV_A_ &fs_w); 3337 ev_io_start (EV_A_ &fs_w);
3338 ev_unref (EV_A);
2552 } 3339 }
2553} 3340}
2554 3341
2555void inline_size 3342inline_size void
2556infy_fork (EV_P) 3343infy_fork (EV_P)
2557{ 3344{
2558 int slot; 3345 int slot;
2559 3346
2560 if (fs_fd < 0) 3347 if (fs_fd < 0)
2561 return; 3348 return;
2562 3349
3350 ev_ref (EV_A);
3351 ev_io_stop (EV_A_ &fs_w);
2563 close (fs_fd); 3352 close (fs_fd);
2564 fs_fd = inotify_init (); 3353 fs_fd = infy_newfd ();
2565 3354
3355 if (fs_fd >= 0)
3356 {
3357 fd_intern (fs_fd);
3358 ev_io_set (&fs_w, fs_fd, EV_READ);
3359 ev_io_start (EV_A_ &fs_w);
3360 ev_unref (EV_A);
3361 }
3362
2566 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3363 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2567 { 3364 {
2568 WL w_ = fs_hash [slot].head; 3365 WL w_ = fs_hash [slot].head;
2569 fs_hash [slot].head = 0; 3366 fs_hash [slot].head = 0;
2570 3367
2571 while (w_) 3368 while (w_)
… …
2576 w->wd = -1; 3373 w->wd = -1;
2577 3374
2578 if (fs_fd >= 0) 3375 if (fs_fd >= 0)
2579 infy_add (EV_A_ w); /* re-add, no matter what */ 3376 infy_add (EV_A_ w); /* re-add, no matter what */
2580 else 3377 else
3378 {
3379 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3380 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2581 ev_timer_start (EV_A_ &w->timer); 3381 ev_timer_again (EV_A_ &w->timer);
3382 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3383 }
2582 } 3384 }
2583
2584 } 3385 }
2585} 3386}
2586 3387
2587#endif 3388#endif
2588 3389
… …
2604static void noinline 3405static void noinline
2605stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3406stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2606{ 3407{
2607 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3408 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2608 3409
2609 /* we copy this here each the time so that */ 3410 ev_statdata prev = w->attr;
2610 /* prev has the old value when the callback gets invoked */
2611 w->prev = w->attr;
2612 ev_stat_stat (EV_A_ w); 3411 ev_stat_stat (EV_A_ w);
2613 3412
2614 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3413 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2615 if ( 3414 if (
2616 w->prev.st_dev != w->attr.st_dev 3415 prev.st_dev != w->attr.st_dev
2617 || w->prev.st_ino != w->attr.st_ino 3416 || prev.st_ino != w->attr.st_ino
2618 || w->prev.st_mode != w->attr.st_mode 3417 || prev.st_mode != w->attr.st_mode
2619 || w->prev.st_nlink != w->attr.st_nlink 3418 || prev.st_nlink != w->attr.st_nlink
2620 || w->prev.st_uid != w->attr.st_uid 3419 || prev.st_uid != w->attr.st_uid
2621 || w->prev.st_gid != w->attr.st_gid 3420 || prev.st_gid != w->attr.st_gid
2622 || w->prev.st_rdev != w->attr.st_rdev 3421 || prev.st_rdev != w->attr.st_rdev
2623 || w->prev.st_size != w->attr.st_size 3422 || prev.st_size != w->attr.st_size
2624 || w->prev.st_atime != w->attr.st_atime 3423 || prev.st_atime != w->attr.st_atime
2625 || w->prev.st_mtime != w->attr.st_mtime 3424 || prev.st_mtime != w->attr.st_mtime
2626 || w->prev.st_ctime != w->attr.st_ctime 3425 || prev.st_ctime != w->attr.st_ctime
2627 ) { 3426 ) {
3427 /* we only update w->prev on actual differences */
3428 /* in case we test more often than invoke the callback, */
3429 /* to ensure that prev is always different to attr */
3430 w->prev = prev;
3431
2628 #if EV_USE_INOTIFY 3432 #if EV_USE_INOTIFY
3433 if (fs_fd >= 0)
3434 {
2629 infy_del (EV_A_ w); 3435 infy_del (EV_A_ w);
2630 infy_add (EV_A_ w); 3436 infy_add (EV_A_ w);
2631 ev_stat_stat (EV_A_ w); /* avoid race... */ 3437 ev_stat_stat (EV_A_ w); /* avoid race... */
3438 }
2632 #endif 3439 #endif
2633 3440
2634 ev_feed_event (EV_A_ w, EV_STAT); 3441 ev_feed_event (EV_A_ w, EV_STAT);
2635 } 3442 }
2636} 3443}
… …
2639ev_stat_start (EV_P_ ev_stat *w) 3446ev_stat_start (EV_P_ ev_stat *w)
2640{ 3447{
2641 if (expect_false (ev_is_active (w))) 3448 if (expect_false (ev_is_active (w)))
2642 return; 3449 return;
2643 3450
2644 /* since we use memcmp, we need to clear any padding data etc. */
2645 memset (&w->prev, 0, sizeof (ev_statdata));
2646 memset (&w->attr, 0, sizeof (ev_statdata));
2647
2648 ev_stat_stat (EV_A_ w); 3451 ev_stat_stat (EV_A_ w);
2649 3452
3453 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2650 if (w->interval < MIN_STAT_INTERVAL) 3454 w->interval = MIN_STAT_INTERVAL;
2651 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2652 3455
2653 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3456 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2654 ev_set_priority (&w->timer, ev_priority (w)); 3457 ev_set_priority (&w->timer, ev_priority (w));
2655 3458
2656#if EV_USE_INOTIFY 3459#if EV_USE_INOTIFY
2657 infy_init (EV_A); 3460 infy_init (EV_A);
2658 3461
2659 if (fs_fd >= 0) 3462 if (fs_fd >= 0)
2660 infy_add (EV_A_ w); 3463 infy_add (EV_A_ w);
2661 else 3464 else
2662#endif 3465#endif
3466 {
2663 ev_timer_start (EV_A_ &w->timer); 3467 ev_timer_again (EV_A_ &w->timer);
3468 ev_unref (EV_A);
3469 }
2664 3470
2665 ev_start (EV_A_ (W)w, 1); 3471 ev_start (EV_A_ (W)w, 1);
2666 3472
2667 EV_FREQUENT_CHECK; 3473 EV_FREQUENT_CHECK;
2668} 3474}
… …
2677 EV_FREQUENT_CHECK; 3483 EV_FREQUENT_CHECK;
2678 3484
2679#if EV_USE_INOTIFY 3485#if EV_USE_INOTIFY
2680 infy_del (EV_A_ w); 3486 infy_del (EV_A_ w);
2681#endif 3487#endif
3488
3489 if (ev_is_active (&w->timer))
3490 {
3491 ev_ref (EV_A);
2682 ev_timer_stop (EV_A_ &w->timer); 3492 ev_timer_stop (EV_A_ &w->timer);
3493 }
2683 3494
2684 ev_stop (EV_A_ (W)w); 3495 ev_stop (EV_A_ (W)w);
2685 3496
2686 EV_FREQUENT_CHECK; 3497 EV_FREQUENT_CHECK;
2687} 3498}
… …
2732 3543
2733 EV_FREQUENT_CHECK; 3544 EV_FREQUENT_CHECK;
2734} 3545}
2735#endif 3546#endif
2736 3547
3548#if EV_PREPARE_ENABLE
2737void 3549void
2738ev_prepare_start (EV_P_ ev_prepare *w) 3550ev_prepare_start (EV_P_ ev_prepare *w)
2739{ 3551{
2740 if (expect_false (ev_is_active (w))) 3552 if (expect_false (ev_is_active (w)))
2741 return; 3553 return;
… …
2767 3579
2768 ev_stop (EV_A_ (W)w); 3580 ev_stop (EV_A_ (W)w);
2769 3581
2770 EV_FREQUENT_CHECK; 3582 EV_FREQUENT_CHECK;
2771} 3583}
3584#endif
2772 3585
3586#if EV_CHECK_ENABLE
2773void 3587void
2774ev_check_start (EV_P_ ev_check *w) 3588ev_check_start (EV_P_ ev_check *w)
2775{ 3589{
2776 if (expect_false (ev_is_active (w))) 3590 if (expect_false (ev_is_active (w)))
2777 return; 3591 return;
… …
2803 3617
2804 ev_stop (EV_A_ (W)w); 3618 ev_stop (EV_A_ (W)w);
2805 3619
2806 EV_FREQUENT_CHECK; 3620 EV_FREQUENT_CHECK;
2807} 3621}
3622#endif
2808 3623
2809#if EV_EMBED_ENABLE 3624#if EV_EMBED_ENABLE
2810void noinline 3625void noinline
2811ev_embed_sweep (EV_P_ ev_embed *w) 3626ev_embed_sweep (EV_P_ ev_embed *w)
2812{ 3627{
2813 ev_loop (w->other, EVLOOP_NONBLOCK); 3628 ev_run (w->other, EVRUN_NOWAIT);
2814} 3629}
2815 3630
2816static void 3631static void
2817embed_io_cb (EV_P_ ev_io *io, int revents) 3632embed_io_cb (EV_P_ ev_io *io, int revents)
2818{ 3633{
2819 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3634 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2820 3635
2821 if (ev_cb (w)) 3636 if (ev_cb (w))
2822 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3637 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2823 else 3638 else
2824 ev_loop (w->other, EVLOOP_NONBLOCK); 3639 ev_run (w->other, EVRUN_NOWAIT);
2825} 3640}
2826 3641
2827static void 3642static void
2828embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3643embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2829{ 3644{
2830 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3645 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2831 3646
2832 { 3647 {
2833 struct ev_loop *loop = w->other; 3648 EV_P = w->other;
2834 3649
2835 while (fdchangecnt) 3650 while (fdchangecnt)
2836 { 3651 {
2837 fd_reify (EV_A); 3652 fd_reify (EV_A);
2838 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3653 ev_run (EV_A_ EVRUN_NOWAIT);
2839 } 3654 }
2840 } 3655 }
2841} 3656}
2842 3657
2843static void 3658static void
2844embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3659embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2845{ 3660{
2846 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3661 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2847 3662
3663 ev_embed_stop (EV_A_ w);
3664
2848 { 3665 {
2849 struct ev_loop *loop = w->other; 3666 EV_P = w->other;
2850 3667
2851 ev_loop_fork (EV_A); 3668 ev_loop_fork (EV_A);
3669 ev_run (EV_A_ EVRUN_NOWAIT);
2852 } 3670 }
3671
3672 ev_embed_start (EV_A_ w);
2853} 3673}
2854 3674
2855#if 0 3675#if 0
2856static void 3676static void
2857embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3677embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2865{ 3685{
2866 if (expect_false (ev_is_active (w))) 3686 if (expect_false (ev_is_active (w)))
2867 return; 3687 return;
2868 3688
2869 { 3689 {
2870 struct ev_loop *loop = w->other; 3690 EV_P = w->other;
2871 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3691 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2872 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3692 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2873 } 3693 }
2874 3694
2875 EV_FREQUENT_CHECK; 3695 EV_FREQUENT_CHECK;
2876 3696
… …
2902 3722
2903 ev_io_stop (EV_A_ &w->io); 3723 ev_io_stop (EV_A_ &w->io);
2904 ev_prepare_stop (EV_A_ &w->prepare); 3724 ev_prepare_stop (EV_A_ &w->prepare);
2905 ev_fork_stop (EV_A_ &w->fork); 3725 ev_fork_stop (EV_A_ &w->fork);
2906 3726
3727 ev_stop (EV_A_ (W)w);
3728
2907 EV_FREQUENT_CHECK; 3729 EV_FREQUENT_CHECK;
2908} 3730}
2909#endif 3731#endif
2910 3732
2911#if EV_FORK_ENABLE 3733#if EV_FORK_ENABLE
… …
2944 3766
2945 EV_FREQUENT_CHECK; 3767 EV_FREQUENT_CHECK;
2946} 3768}
2947#endif 3769#endif
2948 3770
3771#if EV_CLEANUP_ENABLE
3772void
3773ev_cleanup_start (EV_P_ ev_cleanup *w)
3774{
3775 if (expect_false (ev_is_active (w)))
3776 return;
3777
3778 EV_FREQUENT_CHECK;
3779
3780 ev_start (EV_A_ (W)w, ++cleanupcnt);
3781 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3782 cleanups [cleanupcnt - 1] = w;
3783
3784 /* cleanup watchers should never keep a refcount on the loop */
3785 ev_unref (EV_A);
3786 EV_FREQUENT_CHECK;
3787}
3788
3789void
3790ev_cleanup_stop (EV_P_ ev_cleanup *w)
3791{
3792 clear_pending (EV_A_ (W)w);
3793 if (expect_false (!ev_is_active (w)))
3794 return;
3795
3796 EV_FREQUENT_CHECK;
3797 ev_ref (EV_A);
3798
3799 {
3800 int active = ev_active (w);
3801
3802 cleanups [active - 1] = cleanups [--cleanupcnt];
3803 ev_active (cleanups [active - 1]) = active;
3804 }
3805
3806 ev_stop (EV_A_ (W)w);
3807
3808 EV_FREQUENT_CHECK;
3809}
3810#endif
3811
2949#if EV_ASYNC_ENABLE 3812#if EV_ASYNC_ENABLE
2950void 3813void
2951ev_async_start (EV_P_ ev_async *w) 3814ev_async_start (EV_P_ ev_async *w)
2952{ 3815{
2953 if (expect_false (ev_is_active (w))) 3816 if (expect_false (ev_is_active (w)))
2954 return; 3817 return;
2955 3818
3819 w->sent = 0;
3820
2956 evpipe_init (EV_A); 3821 evpipe_init (EV_A);
2957 3822
2958 EV_FREQUENT_CHECK; 3823 EV_FREQUENT_CHECK;
2959 3824
2960 ev_start (EV_A_ (W)w, ++asynccnt); 3825 ev_start (EV_A_ (W)w, ++asynccnt);
… …
2987 3852
2988void 3853void
2989ev_async_send (EV_P_ ev_async *w) 3854ev_async_send (EV_P_ ev_async *w)
2990{ 3855{
2991 w->sent = 1; 3856 w->sent = 1;
2992 evpipe_write (EV_A_ &gotasync); 3857 evpipe_write (EV_A_ &async_pending);
2993} 3858}
2994#endif 3859#endif
2995 3860
2996/*****************************************************************************/ 3861/*****************************************************************************/
2997 3862
… …
3037{ 3902{
3038 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3903 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3039 3904
3040 if (expect_false (!once)) 3905 if (expect_false (!once))
3041 { 3906 {
3042 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3907 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3043 return; 3908 return;
3044 } 3909 }
3045 3910
3046 once->cb = cb; 3911 once->cb = cb;
3047 once->arg = arg; 3912 once->arg = arg;
… …
3059 ev_timer_set (&once->to, timeout, 0.); 3924 ev_timer_set (&once->to, timeout, 0.);
3060 ev_timer_start (EV_A_ &once->to); 3925 ev_timer_start (EV_A_ &once->to);
3061 } 3926 }
3062} 3927}
3063 3928
3929/*****************************************************************************/
3930
3931#if EV_WALK_ENABLE
3932void ecb_cold
3933ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3934{
3935 int i, j;
3936 ev_watcher_list *wl, *wn;
3937
3938 if (types & (EV_IO | EV_EMBED))
3939 for (i = 0; i < anfdmax; ++i)
3940 for (wl = anfds [i].head; wl; )
3941 {
3942 wn = wl->next;
3943
3944#if EV_EMBED_ENABLE
3945 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3946 {
3947 if (types & EV_EMBED)
3948 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3949 }
3950 else
3951#endif
3952#if EV_USE_INOTIFY
3953 if (ev_cb ((ev_io *)wl) == infy_cb)
3954 ;
3955 else
3956#endif
3957 if ((ev_io *)wl != &pipe_w)
3958 if (types & EV_IO)
3959 cb (EV_A_ EV_IO, wl);
3960
3961 wl = wn;
3962 }
3963
3964 if (types & (EV_TIMER | EV_STAT))
3965 for (i = timercnt + HEAP0; i-- > HEAP0; )
3966#if EV_STAT_ENABLE
3967 /*TODO: timer is not always active*/
3968 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3969 {
3970 if (types & EV_STAT)
3971 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3972 }
3973 else
3974#endif
3975 if (types & EV_TIMER)
3976 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3977
3978#if EV_PERIODIC_ENABLE
3979 if (types & EV_PERIODIC)
3980 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3981 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3982#endif
3983
3984#if EV_IDLE_ENABLE
3985 if (types & EV_IDLE)
3986 for (j = NUMPRI; i--; )
3987 for (i = idlecnt [j]; i--; )
3988 cb (EV_A_ EV_IDLE, idles [j][i]);
3989#endif
3990
3991#if EV_FORK_ENABLE
3992 if (types & EV_FORK)
3993 for (i = forkcnt; i--; )
3994 if (ev_cb (forks [i]) != embed_fork_cb)
3995 cb (EV_A_ EV_FORK, forks [i]);
3996#endif
3997
3998#if EV_ASYNC_ENABLE
3999 if (types & EV_ASYNC)
4000 for (i = asynccnt; i--; )
4001 cb (EV_A_ EV_ASYNC, asyncs [i]);
4002#endif
4003
4004#if EV_PREPARE_ENABLE
4005 if (types & EV_PREPARE)
4006 for (i = preparecnt; i--; )
4007# if EV_EMBED_ENABLE
4008 if (ev_cb (prepares [i]) != embed_prepare_cb)
4009# endif
4010 cb (EV_A_ EV_PREPARE, prepares [i]);
4011#endif
4012
4013#if EV_CHECK_ENABLE
4014 if (types & EV_CHECK)
4015 for (i = checkcnt; i--; )
4016 cb (EV_A_ EV_CHECK, checks [i]);
4017#endif
4018
4019#if EV_SIGNAL_ENABLE
4020 if (types & EV_SIGNAL)
4021 for (i = 0; i < EV_NSIG - 1; ++i)
4022 for (wl = signals [i].head; wl; )
4023 {
4024 wn = wl->next;
4025 cb (EV_A_ EV_SIGNAL, wl);
4026 wl = wn;
4027 }
4028#endif
4029
4030#if EV_CHILD_ENABLE
4031 if (types & EV_CHILD)
4032 for (i = (EV_PID_HASHSIZE); i--; )
4033 for (wl = childs [i]; wl; )
4034 {
4035 wn = wl->next;
4036 cb (EV_A_ EV_CHILD, wl);
4037 wl = wn;
4038 }
4039#endif
4040/* EV_STAT 0x00001000 /* stat data changed */
4041/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4042}
4043#endif
4044
3064#if EV_MULTIPLICITY 4045#if EV_MULTIPLICITY
3065 #include "ev_wrap.h" 4046 #include "ev_wrap.h"
3066#endif 4047#endif
3067 4048
3068#ifdef __cplusplus 4049EV_CPP(})
3069}
3070#endif
3071 4050

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