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Comparing libev/ev.c (file contents):
Revision 1.264 by root, Mon Oct 13 23:20:12 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
291# include <sys/utsname.h> 397# include <sys/statfs.h>
292# include <sys/inotify.h> 398# include <sys/inotify.h>
293/* 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 */
294# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
295# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
296# define EV_USE_INOTIFY 0 402# define EV_USE_INOTIFY 0
… …
302#endif 408#endif
303 409
304#if EV_USE_EVENTFD 410#if EV_USE_EVENTFD
305/* 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 */
306# include <stdint.h> 412# include <stdint.h>
307# ifdef __cplusplus 413# ifndef EFD_NONBLOCK
308extern "C" { 414# define EFD_NONBLOCK O_NONBLOCK
309# endif 415# endif
310int eventfd (unsigned int initval, int flags); 416# ifndef EFD_CLOEXEC
311# ifdef __cplusplus 417# ifdef O_CLOEXEC
312} 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
313# 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};
314#endif 446#endif
315 447
316/**/ 448/**/
317 449
318#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
319# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
320#else 452#else
321# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
322#endif 454#endif
323 455
324/* 456/*
325 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
326 * It is added to ev_rt_now when scheduling periodics
327 * to ensure progress, time-wise, even when rounding
328 * errors are against us.
329 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
330 * Better solutions welcome.
331 */ 459 */
332#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 */
333 462
334#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) */
335#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) */
336/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
337 465
338#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)
339# 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)
340# 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
341#else 493#else
342# define expect(expr,value) (expr) 494 #define ecb_inline static
343# define noinline
344# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
345# define inline
346# endif 495#endif
347#endif
348 496
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. */
349#define expect_false(expr) expect ((expr) != 0, 0) 528#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
350#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
351#define inline_size static inline 536#define inline_size ecb_inline
352 537
353#if EV_MINIMAL 538#if EV_FEATURE_CODE
539# define inline_speed ecb_inline
540#else
354# 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)
355#else 548#else
356# define inline_speed static inline
357#endif
358
359#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
360#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 549# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
550#endif
361 551
362#define EMPTY /* required for microsofts broken pseudo-c compiler */ 552#define EMPTY /* required for microsofts broken pseudo-c compiler */
363#define EMPTY2(a,b) /* used to suppress some warnings */ 553#define EMPTY2(a,b) /* used to suppress some warnings */
364 554
365typedef ev_watcher *W; 555typedef ev_watcher *W;
… …
367typedef ev_watcher_time *WT; 557typedef ev_watcher_time *WT;
368 558
369#define ev_active(w) ((W)(w))->active 559#define ev_active(w) ((W)(w))->active
370#define ev_at(w) ((WT)(w))->at 560#define ev_at(w) ((WT)(w))->at
371 561
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
372#if EV_USE_MONOTONIC 568#if EV_USE_MONOTONIC
373/* sig_atomic_t is used to avoid per-thread variables or locking but still */
374/* giving it a reasonably high chance of working on typical architetcures */
375static 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)
376#endif 580#endif
377 581
378#ifdef _WIN32 582#ifdef _WIN32
379# include "ev_win32.c" 583# include "ev_win32.c"
380#endif 584#endif
381 585
382/*****************************************************************************/ 586/*****************************************************************************/
383 587
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
384static void (*syserr_cb)(const char *msg); 686static void (*syserr_cb)(const char *msg);
385 687
386void 688void ecb_cold
387ev_set_syserr_cb (void (*cb)(const char *msg)) 689ev_set_syserr_cb (void (*cb)(const char *msg))
388{ 690{
389 syserr_cb = cb; 691 syserr_cb = cb;
390} 692}
391 693
392static void noinline 694static void noinline ecb_cold
393syserr (const char *msg) 695ev_syserr (const char *msg)
394{ 696{
395 if (!msg) 697 if (!msg)
396 msg = "(libev) system error"; 698 msg = "(libev) system error";
397 699
398 if (syserr_cb) 700 if (syserr_cb)
399 syserr_cb (msg); 701 syserr_cb (msg);
400 else 702 else
401 { 703 {
704#if EV_AVOID_STDIO
705 ev_printerr (msg);
706 ev_printerr (": ");
707 ev_printerr (strerror (errno));
708 ev_printerr ("\n");
709#else
402 perror (msg); 710 perror (msg);
711#endif
403 abort (); 712 abort ();
404 } 713 }
405} 714}
406 715
407static void * 716static void *
408ev_realloc_emul (void *ptr, long size) 717ev_realloc_emul (void *ptr, long size)
409{ 718{
719#if __GLIBC__
720 return realloc (ptr, size);
721#else
410 /* some systems, notably openbsd and darwin, fail to properly 722 /* some systems, notably openbsd and darwin, fail to properly
411 * 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
412 * the single unix specification, so work around them here. 724 * the single unix specification, so work around them here.
413 */ 725 */
414 726
415 if (size) 727 if (size)
416 return realloc (ptr, size); 728 return realloc (ptr, size);
417 729
418 free (ptr); 730 free (ptr);
419 return 0; 731 return 0;
732#endif
420} 733}
421 734
422static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 735static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
423 736
424void 737void ecb_cold
425ev_set_allocator (void *(*cb)(void *ptr, long size)) 738ev_set_allocator (void *(*cb)(void *ptr, long size))
426{ 739{
427 alloc = cb; 740 alloc = cb;
428} 741}
429 742
… …
432{ 745{
433 ptr = alloc (ptr, size); 746 ptr = alloc (ptr, size);
434 747
435 if (!ptr && size) 748 if (!ptr && size)
436 { 749 {
750#if EV_AVOID_STDIO
751 ev_printerr ("(libev) memory allocation failed, aborting.\n");
752#else
437 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 753 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
754#endif
438 abort (); 755 abort ();
439 } 756 }
440 757
441 return ptr; 758 return ptr;
442} 759}
… …
444#define ev_malloc(size) ev_realloc (0, (size)) 761#define ev_malloc(size) ev_realloc (0, (size))
445#define ev_free(ptr) ev_realloc ((ptr), 0) 762#define ev_free(ptr) ev_realloc ((ptr), 0)
446 763
447/*****************************************************************************/ 764/*****************************************************************************/
448 765
766/* set in reify when reification needed */
767#define EV_ANFD_REIFY 1
768
769/* file descriptor info structure */
449typedef struct 770typedef struct
450{ 771{
451 WL head; 772 WL head;
452 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 */
453 unsigned char reify; 776 unsigned char unused;
777#if EV_USE_EPOLL
778 unsigned int egen; /* generation counter to counter epoll bugs */
779#endif
454#if EV_SELECT_IS_WINSOCKET 780#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
455 SOCKET handle; 781 SOCKET handle;
456#endif 782#endif
783#if EV_USE_IOCP
784 OVERLAPPED or, ow;
785#endif
457} ANFD; 786} ANFD;
458 787
788/* stores the pending event set for a given watcher */
459typedef struct 789typedef struct
460{ 790{
461 W w; 791 W w;
462 int events; 792 int events; /* the pending event set for the given watcher */
463} ANPENDING; 793} ANPENDING;
464 794
465#if EV_USE_INOTIFY 795#if EV_USE_INOTIFY
466/* hash table entry per inotify-id */ 796/* hash table entry per inotify-id */
467typedef struct 797typedef struct
… …
470} ANFS; 800} ANFS;
471#endif 801#endif
472 802
473/* Heap Entry */ 803/* Heap Entry */
474#if EV_HEAP_CACHE_AT 804#if EV_HEAP_CACHE_AT
805 /* a heap element */
475 typedef struct { 806 typedef struct {
476 ev_tstamp at; 807 ev_tstamp at;
477 WT w; 808 WT w;
478 } ANHE; 809 } ANHE;
479 810
480 #define ANHE_w(he) (he).w /* access watcher, read-write */ 811 #define ANHE_w(he) (he).w /* access watcher, read-write */
481 #define ANHE_at(he) (he).at /* access cached at, read-only */ 812 #define ANHE_at(he) (he).at /* access cached at, read-only */
482 #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 */
483#else 814#else
815 /* a heap element */
484 typedef WT ANHE; 816 typedef WT ANHE;
485 817
486 #define ANHE_w(he) (he) 818 #define ANHE_w(he) (he)
487 #define ANHE_at(he) (he)->at 819 #define ANHE_at(he) (he)->at
488 #define ANHE_at_cache(he) 820 #define ANHE_at_cache(he)
… …
512 844
513 static int ev_default_loop_ptr; 845 static int ev_default_loop_ptr;
514 846
515#endif 847#endif
516 848
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
517/*****************************************************************************/ 861/*****************************************************************************/
518 862
863#ifndef EV_HAVE_EV_TIME
519ev_tstamp 864ev_tstamp
520ev_time (void) 865ev_time (void)
521{ 866{
522#if EV_USE_REALTIME 867#if EV_USE_REALTIME
868 if (expect_true (have_realtime))
869 {
523 struct timespec ts; 870 struct timespec ts;
524 clock_gettime (CLOCK_REALTIME, &ts); 871 clock_gettime (CLOCK_REALTIME, &ts);
525 return ts.tv_sec + ts.tv_nsec * 1e-9; 872 return ts.tv_sec + ts.tv_nsec * 1e-9;
526#else 873 }
874#endif
875
527 struct timeval tv; 876 struct timeval tv;
528 gettimeofday (&tv, 0); 877 gettimeofday (&tv, 0);
529 return tv.tv_sec + tv.tv_usec * 1e-6; 878 return tv.tv_sec + tv.tv_usec * 1e-6;
530#endif
531} 879}
880#endif
532 881
533ev_tstamp inline_size 882inline_size ev_tstamp
534get_clock (void) 883get_clock (void)
535{ 884{
536#if EV_USE_MONOTONIC 885#if EV_USE_MONOTONIC
537 if (expect_true (have_monotonic)) 886 if (expect_true (have_monotonic))
538 { 887 {
… …
559 if (delay > 0.) 908 if (delay > 0.)
560 { 909 {
561#if EV_USE_NANOSLEEP 910#if EV_USE_NANOSLEEP
562 struct timespec ts; 911 struct timespec ts;
563 912
564 ts.tv_sec = (time_t)delay; 913 EV_TS_SET (ts, delay);
565 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
566
567 nanosleep (&ts, 0); 914 nanosleep (&ts, 0);
568#elif defined(_WIN32) 915#elif defined(_WIN32)
569 Sleep ((unsigned long)(delay * 1e3)); 916 Sleep ((unsigned long)(delay * 1e3));
570#else 917#else
571 struct timeval tv; 918 struct timeval tv;
572 919
573 tv.tv_sec = (time_t)delay;
574 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
575
576 /* 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 */
577 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 921 /* something not guaranteed by newer posix versions, but guaranteed */
578 /* by older ones */ 922 /* by older ones */
923 EV_TV_SET (tv, delay);
579 select (0, 0, 0, 0, &tv); 924 select (0, 0, 0, 0, &tv);
580#endif 925#endif
581 } 926 }
582} 927}
583 928
584/*****************************************************************************/ 929/*****************************************************************************/
585 930
586#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 */
587 932
588int 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
589array_nextsize (int elem, int cur, int cnt) 936array_nextsize (int elem, int cur, int cnt)
590{ 937{
591 int ncur = cur + 1; 938 int ncur = cur + 1;
592 939
593 do 940 do
… …
604 } 951 }
605 952
606 return ncur; 953 return ncur;
607} 954}
608 955
609static noinline void * 956static void * noinline ecb_cold
610array_realloc (int elem, void *base, int *cur, int cnt) 957array_realloc (int elem, void *base, int *cur, int cnt)
611{ 958{
612 *cur = array_nextsize (elem, *cur, cnt); 959 *cur = array_nextsize (elem, *cur, cnt);
613 return ev_realloc (base, elem * *cur); 960 return ev_realloc (base, elem * *cur);
614} 961}
962
963#define array_init_zero(base,count) \
964 memset ((void *)(base), 0, sizeof (*(base)) * (count))
615 965
616#define array_needsize(type,base,cur,cnt,init) \ 966#define array_needsize(type,base,cur,cnt,init) \
617 if (expect_false ((cnt) > (cur))) \ 967 if (expect_false ((cnt) > (cur))) \
618 { \ 968 { \
619 int ocur_ = (cur); \ 969 int ocur_ = (cur); \
… …
631 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 981 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
632 } 982 }
633#endif 983#endif
634 984
635#define array_free(stem, idx) \ 985#define array_free(stem, idx) \
636 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
637 987
638/*****************************************************************************/ 988/*****************************************************************************/
989
990/* dummy callback for pending events */
991static void noinline
992pendingcb (EV_P_ ev_prepare *w, int revents)
993{
994}
639 995
640void noinline 996void noinline
641ev_feed_event (EV_P_ void *w, int revents) 997ev_feed_event (EV_P_ void *w, int revents)
642{ 998{
643 W w_ = (W)w; 999 W w_ = (W)w;
… …
652 pendings [pri][w_->pending - 1].w = w_; 1008 pendings [pri][w_->pending - 1].w = w_;
653 pendings [pri][w_->pending - 1].events = revents; 1009 pendings [pri][w_->pending - 1].events = revents;
654 } 1010 }
655} 1011}
656 1012
657void 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
658queue_events (EV_P_ W *events, int eventcnt, int type) 1029queue_events (EV_P_ W *events, int eventcnt, int type)
659{ 1030{
660 int i; 1031 int i;
661 1032
662 for (i = 0; i < eventcnt; ++i) 1033 for (i = 0; i < eventcnt; ++i)
663 ev_feed_event (EV_A_ events [i], type); 1034 ev_feed_event (EV_A_ events [i], type);
664} 1035}
665 1036
666/*****************************************************************************/ 1037/*****************************************************************************/
667 1038
668void inline_size 1039inline_speed void
669anfds_init (ANFD *base, int count)
670{
671 while (count--)
672 {
673 base->head = 0;
674 base->events = EV_NONE;
675 base->reify = 0;
676
677 ++base;
678 }
679}
680
681void inline_speed
682fd_event (EV_P_ int fd, int revents) 1040fd_event_nocheck (EV_P_ int fd, int revents)
683{ 1041{
684 ANFD *anfd = anfds + fd; 1042 ANFD *anfd = anfds + fd;
685 ev_io *w; 1043 ev_io *w;
686 1044
687 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)
… …
691 if (ev) 1049 if (ev)
692 ev_feed_event (EV_A_ (W)w, ev); 1050 ev_feed_event (EV_A_ (W)w, ev);
693 } 1051 }
694} 1052}
695 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
696void 1065void
697ev_feed_fd_event (EV_P_ int fd, int revents) 1066ev_feed_fd_event (EV_P_ int fd, int revents)
698{ 1067{
699 if (fd >= 0 && fd < anfdmax) 1068 if (fd >= 0 && fd < anfdmax)
700 fd_event (EV_A_ fd, revents); 1069 fd_event_nocheck (EV_A_ fd, revents);
701} 1070}
702 1071
703void inline_size 1072/* make sure the external fd watch events are in-sync */
1073/* with the kernel/libev internal state */
1074inline_size void
704fd_reify (EV_P) 1075fd_reify (EV_P)
705{ 1076{
706 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
707 1103
708 for (i = 0; i < fdchangecnt; ++i) 1104 for (i = 0; i < fdchangecnt; ++i)
709 { 1105 {
710 int fd = fdchanges [i]; 1106 int fd = fdchanges [i];
711 ANFD *anfd = anfds + fd; 1107 ANFD *anfd = anfds + fd;
712 ev_io *w; 1108 ev_io *w;
713 1109
714 unsigned char events = 0; 1110 unsigned char o_events = anfd->events;
1111 unsigned char o_reify = anfd->reify;
715 1112
716 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1113 anfd->reify = 0;
717 events |= (unsigned char)w->events;
718 1114
719#if EV_SELECT_IS_WINSOCKET 1115 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
720 if (events)
721 { 1116 {
722 unsigned long arg; 1117 anfd->events = 0;
723 #ifdef EV_FD_TO_WIN32_HANDLE 1118
724 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1119 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
725 #else 1120 anfd->events |= (unsigned char)w->events;
726 anfd->handle = _get_osfhandle (fd); 1121
727 #endif 1122 if (o_events != anfd->events)
728 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1123 o_reify = EV__IOFDSET; /* actually |= */
729 } 1124 }
730#endif
731 1125
732 { 1126 if (o_reify & EV__IOFDSET)
733 unsigned char o_events = anfd->events;
734 unsigned char o_reify = anfd->reify;
735
736 anfd->reify = 0;
737 anfd->events = events;
738
739 if (o_events != events || o_reify & EV_IOFDSET)
740 backend_modify (EV_A_ fd, o_events, events); 1127 backend_modify (EV_A_ fd, o_events, anfd->events);
741 }
742 } 1128 }
743 1129
744 fdchangecnt = 0; 1130 fdchangecnt = 0;
745} 1131}
746 1132
747void inline_size 1133/* something about the given fd changed */
1134inline_size void
748fd_change (EV_P_ int fd, int flags) 1135fd_change (EV_P_ int fd, int flags)
749{ 1136{
750 unsigned char reify = anfds [fd].reify; 1137 unsigned char reify = anfds [fd].reify;
751 anfds [fd].reify |= flags; 1138 anfds [fd].reify |= flags;
752 1139
… …
756 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1143 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
757 fdchanges [fdchangecnt - 1] = fd; 1144 fdchanges [fdchangecnt - 1] = fd;
758 } 1145 }
759} 1146}
760 1147
761void inline_speed 1148/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1149inline_speed void ecb_cold
762fd_kill (EV_P_ int fd) 1150fd_kill (EV_P_ int fd)
763{ 1151{
764 ev_io *w; 1152 ev_io *w;
765 1153
766 while ((w = (ev_io *)anfds [fd].head)) 1154 while ((w = (ev_io *)anfds [fd].head))
… …
768 ev_io_stop (EV_A_ w); 1156 ev_io_stop (EV_A_ w);
769 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);
770 } 1158 }
771} 1159}
772 1160
773int inline_size 1161/* check whether the given fd is actually valid, for error recovery */
1162inline_size int ecb_cold
774fd_valid (int fd) 1163fd_valid (int fd)
775{ 1164{
776#ifdef _WIN32 1165#ifdef _WIN32
777 return _get_osfhandle (fd) != -1; 1166 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
778#else 1167#else
779 return fcntl (fd, F_GETFD) != -1; 1168 return fcntl (fd, F_GETFD) != -1;
780#endif 1169#endif
781} 1170}
782 1171
783/* called on EBADF to verify fds */ 1172/* called on EBADF to verify fds */
784static void noinline 1173static void noinline ecb_cold
785fd_ebadf (EV_P) 1174fd_ebadf (EV_P)
786{ 1175{
787 int fd; 1176 int fd;
788 1177
789 for (fd = 0; fd < anfdmax; ++fd) 1178 for (fd = 0; fd < anfdmax; ++fd)
… …
791 if (!fd_valid (fd) && errno == EBADF) 1180 if (!fd_valid (fd) && errno == EBADF)
792 fd_kill (EV_A_ fd); 1181 fd_kill (EV_A_ fd);
793} 1182}
794 1183
795/* 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 */
796static void noinline 1185static void noinline ecb_cold
797fd_enomem (EV_P) 1186fd_enomem (EV_P)
798{ 1187{
799 int fd; 1188 int fd;
800 1189
801 for (fd = anfdmax; fd--; ) 1190 for (fd = anfdmax; fd--; )
802 if (anfds [fd].events) 1191 if (anfds [fd].events)
803 { 1192 {
804 fd_kill (EV_A_ fd); 1193 fd_kill (EV_A_ fd);
805 return; 1194 break;
806 } 1195 }
807} 1196}
808 1197
809/* 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 */
810static void noinline 1199static void noinline
… …
814 1203
815 for (fd = 0; fd < anfdmax; ++fd) 1204 for (fd = 0; fd < anfdmax; ++fd)
816 if (anfds [fd].events) 1205 if (anfds [fd].events)
817 { 1206 {
818 anfds [fd].events = 0; 1207 anfds [fd].events = 0;
1208 anfds [fd].emask = 0;
819 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1209 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
820 } 1210 }
821} 1211}
822 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
823/*****************************************************************************/ 1227/*****************************************************************************/
824 1228
825/* 1229/*
826 * 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
827 * 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
828 * the branching factor of the d-tree. 1232 * the branching factor of the d-tree.
829 */ 1233 */
830 1234
831/* 1235/*
… …
840#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1244#define HEAP0 (DHEAP - 1) /* index of first element in heap */
841#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1245#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
842#define UPHEAP_DONE(p,k) ((p) == (k)) 1246#define UPHEAP_DONE(p,k) ((p) == (k))
843 1247
844/* away from the root */ 1248/* away from the root */
845void inline_speed 1249inline_speed void
846downheap (ANHE *heap, int N, int k) 1250downheap (ANHE *heap, int N, int k)
847{ 1251{
848 ANHE he = heap [k]; 1252 ANHE he = heap [k];
849 ANHE *E = heap + N + HEAP0; 1253 ANHE *E = heap + N + HEAP0;
850 1254
… …
890#define HEAP0 1 1294#define HEAP0 1
891#define HPARENT(k) ((k) >> 1) 1295#define HPARENT(k) ((k) >> 1)
892#define UPHEAP_DONE(p,k) (!(p)) 1296#define UPHEAP_DONE(p,k) (!(p))
893 1297
894/* away from the root */ 1298/* away from the root */
895void inline_speed 1299inline_speed void
896downheap (ANHE *heap, int N, int k) 1300downheap (ANHE *heap, int N, int k)
897{ 1301{
898 ANHE he = heap [k]; 1302 ANHE he = heap [k];
899 1303
900 for (;;) 1304 for (;;)
901 { 1305 {
902 int c = k << 1; 1306 int c = k << 1;
903 1307
904 if (c > N + HEAP0 - 1) 1308 if (c >= N + HEAP0)
905 break; 1309 break;
906 1310
907 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])
908 ? 1 : 0; 1312 ? 1 : 0;
909 1313
… …
920 ev_active (ANHE_w (he)) = k; 1324 ev_active (ANHE_w (he)) = k;
921} 1325}
922#endif 1326#endif
923 1327
924/* towards the root */ 1328/* towards the root */
925void inline_speed 1329inline_speed void
926upheap (ANHE *heap, int k) 1330upheap (ANHE *heap, int k)
927{ 1331{
928 ANHE he = heap [k]; 1332 ANHE he = heap [k];
929 1333
930 for (;;) 1334 for (;;)
… …
941 1345
942 heap [k] = he; 1346 heap [k] = he;
943 ev_active (ANHE_w (he)) = k; 1347 ev_active (ANHE_w (he)) = k;
944} 1348}
945 1349
946void inline_size 1350/* move an element suitably so it is in a correct place */
1351inline_size void
947adjustheap (ANHE *heap, int N, int k) 1352adjustheap (ANHE *heap, int N, int k)
948{ 1353{
949 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)]))
950 upheap (heap, k); 1355 upheap (heap, k);
951 else 1356 else
952 downheap (heap, N, k); 1357 downheap (heap, N, k);
953} 1358}
954 1359
955/* 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 */
956void inline_size 1361inline_size void
957reheap (ANHE *heap, int N) 1362reheap (ANHE *heap, int N)
958{ 1363{
959 int i; 1364 int i;
960 1365
961 /* 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 */
… …
964 upheap (heap, i + HEAP0); 1369 upheap (heap, i + HEAP0);
965} 1370}
966 1371
967/*****************************************************************************/ 1372/*****************************************************************************/
968 1373
1374/* associate signal watchers to a signal signal */
969typedef struct 1375typedef struct
970{ 1376{
1377 EV_ATOMIC_T pending;
1378#if EV_MULTIPLICITY
1379 EV_P;
1380#endif
971 WL head; 1381 WL head;
972 EV_ATOMIC_T gotsig;
973} ANSIG; 1382} ANSIG;
974 1383
975static ANSIG *signals; 1384static ANSIG signals [EV_NSIG - 1];
976static int signalmax;
977
978static EV_ATOMIC_T gotsig;
979
980void inline_size
981signals_init (ANSIG *base, int count)
982{
983 while (count--)
984 {
985 base->head = 0;
986 base->gotsig = 0;
987
988 ++base;
989 }
990}
991 1385
992/*****************************************************************************/ 1386/*****************************************************************************/
993 1387
994void inline_speed 1388#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
995fd_intern (int fd)
996{
997#ifdef _WIN32
998 unsigned long arg = 1;
999 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1000#else
1001 fcntl (fd, F_SETFD, FD_CLOEXEC);
1002 fcntl (fd, F_SETFL, O_NONBLOCK);
1003#endif
1004}
1005 1389
1006static void noinline 1390static void noinline ecb_cold
1007evpipe_init (EV_P) 1391evpipe_init (EV_P)
1008{ 1392{
1009 if (!ev_is_active (&pipeev)) 1393 if (!ev_is_active (&pipe_w))
1010 { 1394 {
1011#if EV_USE_EVENTFD 1395# if EV_USE_EVENTFD
1396 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1397 if (evfd < 0 && errno == EINVAL)
1012 if ((evfd = eventfd (0, 0)) >= 0) 1398 evfd = eventfd (0, 0);
1399
1400 if (evfd >= 0)
1013 { 1401 {
1014 evpipe [0] = -1; 1402 evpipe [0] = -1;
1015 fd_intern (evfd); 1403 fd_intern (evfd); /* doing it twice doesn't hurt */
1016 ev_io_set (&pipeev, evfd, EV_READ); 1404 ev_io_set (&pipe_w, evfd, EV_READ);
1017 } 1405 }
1018 else 1406 else
1019#endif 1407# endif
1020 { 1408 {
1021 while (pipe (evpipe)) 1409 while (pipe (evpipe))
1022 syserr ("(libev) error creating signal/async pipe"); 1410 ev_syserr ("(libev) error creating signal/async pipe");
1023 1411
1024 fd_intern (evpipe [0]); 1412 fd_intern (evpipe [0]);
1025 fd_intern (evpipe [1]); 1413 fd_intern (evpipe [1]);
1026 ev_io_set (&pipeev, evpipe [0], EV_READ); 1414 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1027 } 1415 }
1028 1416
1029 ev_io_start (EV_A_ &pipeev); 1417 ev_io_start (EV_A_ &pipe_w);
1030 ev_unref (EV_A); /* watcher should not keep loop alive */ 1418 ev_unref (EV_A); /* watcher should not keep loop alive */
1031 } 1419 }
1032} 1420}
1033 1421
1034void inline_size 1422inline_size void
1035evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1423evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1036{ 1424{
1037 if (!*flag) 1425 if (!*flag)
1038 { 1426 {
1039 int old_errno = errno; /* save errno because write might clobber it */
1040
1041 *flag = 1; 1427 *flag = 1;
1042 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 {
1043#if EV_USE_EVENTFD 1469#if EV_USE_EVENTFD
1044 if (evfd >= 0) 1470 if (evfd >= 0)
1045 { 1471 {
1046 uint64_t counter = 1; 1472 uint64_t counter;
1047 write (evfd, &counter, sizeof (uint64_t)); 1473 read (evfd, &counter, sizeof (uint64_t));
1048 } 1474 }
1049 else 1475 else
1050#endif 1476#endif
1051 write (evpipe [1], &old_errno, 1); 1477 {
1052
1053 errno = old_errno;
1054 }
1055}
1056
1057static void
1058pipecb (EV_P_ ev_io *iow, int revents)
1059{
1060#if EV_USE_EVENTFD
1061 if (evfd >= 0)
1062 {
1063 uint64_t counter;
1064 read (evfd, &counter, sizeof (uint64_t));
1065 }
1066 else
1067#endif
1068 {
1069 char dummy; 1478 char dummy;
1479 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1070 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)
1071 } 1488 {
1489 sig_pending = 0;
1072 1490
1073 if (gotsig && ev_is_default_loop (EV_A)) 1491 for (i = EV_NSIG - 1; i--; )
1074 { 1492 if (expect_false (signals [i].pending))
1075 int signum;
1076 gotsig = 0;
1077
1078 for (signum = signalmax; signum--; )
1079 if (signals [signum].gotsig)
1080 ev_feed_signal_event (EV_A_ signum + 1); 1493 ev_feed_signal_event (EV_A_ i + 1);
1081 } 1494 }
1495#endif
1082 1496
1083#if EV_ASYNC_ENABLE 1497#if EV_ASYNC_ENABLE
1084 if (gotasync) 1498 if (async_pending)
1085 { 1499 {
1086 int i; 1500 async_pending = 0;
1087 gotasync = 0;
1088 1501
1089 for (i = asynccnt; i--; ) 1502 for (i = asynccnt; i--; )
1090 if (asyncs [i]->sent) 1503 if (asyncs [i]->sent)
1091 { 1504 {
1092 asyncs [i]->sent = 0; 1505 asyncs [i]->sent = 0;
… …
1096#endif 1509#endif
1097} 1510}
1098 1511
1099/*****************************************************************************/ 1512/*****************************************************************************/
1100 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
1101static void 1530static void
1102ev_sighandler (int signum) 1531ev_sighandler (int signum)
1103{ 1532{
1104#if EV_MULTIPLICITY
1105 struct ev_loop *loop = &default_loop_struct;
1106#endif
1107
1108#if _WIN32 1533#ifdef _WIN32
1109 signal (signum, ev_sighandler); 1534 signal (signum, ev_sighandler);
1110#endif 1535#endif
1111 1536
1112 signals [signum - 1].gotsig = 1; 1537 ev_feed_signal (signum);
1113 evpipe_write (EV_A_ &gotsig);
1114} 1538}
1115 1539
1116void noinline 1540void noinline
1117ev_feed_signal_event (EV_P_ int signum) 1541ev_feed_signal_event (EV_P_ int signum)
1118{ 1542{
1119 WL w; 1543 WL w;
1120 1544
1545 if (expect_false (signum <= 0 || signum > EV_NSIG))
1546 return;
1547
1548 --signum;
1549
1121#if EV_MULTIPLICITY 1550#if EV_MULTIPLICITY
1122 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 */
1123#endif 1552 /* or, likely more useful, feeding a signal nobody is waiting for */
1124 1553
1125 --signum; 1554 if (expect_false (signals [signum].loop != EV_A))
1126
1127 if (signum < 0 || signum >= signalmax)
1128 return; 1555 return;
1556#endif
1129 1557
1130 signals [signum].gotsig = 0; 1558 signals [signum].pending = 0;
1131 1559
1132 for (w = signals [signum].head; w; w = w->next) 1560 for (w = signals [signum].head; w; w = w->next)
1133 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1561 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1134} 1562}
1135 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
1136/*****************************************************************************/ 1586/*****************************************************************************/
1137 1587
1588#if EV_CHILD_ENABLE
1138static WL childs [EV_PID_HASHSIZE]; 1589static WL childs [EV_PID_HASHSIZE];
1139
1140#ifndef _WIN32
1141 1590
1142static ev_signal childev; 1591static ev_signal childev;
1143 1592
1144#ifndef WIFCONTINUED 1593#ifndef WIFCONTINUED
1145# define WIFCONTINUED(status) 0 1594# define WIFCONTINUED(status) 0
1146#endif 1595#endif
1147 1596
1148void inline_speed 1597/* handle a single child status event */
1598inline_speed void
1149child_reap (EV_P_ int chain, int pid, int status) 1599child_reap (EV_P_ int chain, int pid, int status)
1150{ 1600{
1151 ev_child *w; 1601 ev_child *w;
1152 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1602 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1153 1603
1154 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)
1155 { 1605 {
1156 if ((w->pid == pid || !w->pid) 1606 if ((w->pid == pid || !w->pid)
1157 && (!traced || (w->flags & 1))) 1607 && (!traced || (w->flags & 1)))
1158 { 1608 {
1159 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 */
… …
1166 1616
1167#ifndef WCONTINUED 1617#ifndef WCONTINUED
1168# define WCONTINUED 0 1618# define WCONTINUED 0
1169#endif 1619#endif
1170 1620
1621/* called on sigchld etc., calls waitpid */
1171static void 1622static void
1172childcb (EV_P_ ev_signal *sw, int revents) 1623childcb (EV_P_ ev_signal *sw, int revents)
1173{ 1624{
1174 int pid, status; 1625 int pid, status;
1175 1626
… …
1183 /* 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 */
1184 /* 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 */
1185 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1636 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1186 1637
1187 child_reap (EV_A_ pid, pid, status); 1638 child_reap (EV_A_ pid, pid, status);
1188 if (EV_PID_HASHSIZE > 1) 1639 if ((EV_PID_HASHSIZE) > 1)
1189 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 */
1190} 1641}
1191 1642
1192#endif 1643#endif
1193 1644
1194/*****************************************************************************/ 1645/*****************************************************************************/
1195 1646
1647#if EV_USE_IOCP
1648# include "ev_iocp.c"
1649#endif
1196#if EV_USE_PORT 1650#if EV_USE_PORT
1197# include "ev_port.c" 1651# include "ev_port.c"
1198#endif 1652#endif
1199#if EV_USE_KQUEUE 1653#if EV_USE_KQUEUE
1200# include "ev_kqueue.c" 1654# include "ev_kqueue.c"
… …
1207#endif 1661#endif
1208#if EV_USE_SELECT 1662#if EV_USE_SELECT
1209# include "ev_select.c" 1663# include "ev_select.c"
1210#endif 1664#endif
1211 1665
1212int 1666int ecb_cold
1213ev_version_major (void) 1667ev_version_major (void)
1214{ 1668{
1215 return EV_VERSION_MAJOR; 1669 return EV_VERSION_MAJOR;
1216} 1670}
1217 1671
1218int 1672int ecb_cold
1219ev_version_minor (void) 1673ev_version_minor (void)
1220{ 1674{
1221 return EV_VERSION_MINOR; 1675 return EV_VERSION_MINOR;
1222} 1676}
1223 1677
1224/* 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 */
1225int inline_size 1679int inline_size ecb_cold
1226enable_secure (void) 1680enable_secure (void)
1227{ 1681{
1228#ifdef _WIN32 1682#ifdef _WIN32
1229 return 0; 1683 return 0;
1230#else 1684#else
1231 return getuid () != geteuid () 1685 return getuid () != geteuid ()
1232 || getgid () != getegid (); 1686 || getgid () != getegid ();
1233#endif 1687#endif
1234} 1688}
1235 1689
1236unsigned int 1690unsigned int ecb_cold
1237ev_supported_backends (void) 1691ev_supported_backends (void)
1238{ 1692{
1239 unsigned int flags = 0; 1693 unsigned int flags = 0;
1240 1694
1241 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1695 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1245 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1699 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1246 1700
1247 return flags; 1701 return flags;
1248} 1702}
1249 1703
1250unsigned int 1704unsigned int ecb_cold
1251ev_recommended_backends (void) 1705ev_recommended_backends (void)
1252{ 1706{
1253 unsigned int flags = ev_supported_backends (); 1707 unsigned int flags = ev_supported_backends ();
1254 1708
1255#ifndef __NetBSD__ 1709#ifndef __NetBSD__
1256 /* kqueue is borked on everything but netbsd apparently */ 1710 /* kqueue is borked on everything but netbsd apparently */
1257 /* 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 */
1258 flags &= ~EVBACKEND_KQUEUE; 1712 flags &= ~EVBACKEND_KQUEUE;
1259#endif 1713#endif
1260#ifdef __APPLE__ 1714#ifdef __APPLE__
1261 // flags &= ~EVBACKEND_KQUEUE; for documentation 1715 /* only select works correctly on that "unix-certified" platform */
1262 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) */
1263#endif 1721#endif
1264 1722
1265 return flags; 1723 return flags;
1266} 1724}
1267 1725
1268unsigned int 1726unsigned int ecb_cold
1269ev_embeddable_backends (void) 1727ev_embeddable_backends (void)
1270{ 1728{
1271 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1729 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1272 1730
1273 /* 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 */
1274 /* please fix it and tell me how to detect the fix */ 1732 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1275 flags &= ~EVBACKEND_EPOLL; 1733 flags &= ~EVBACKEND_EPOLL;
1276 1734
1277 return flags; 1735 return flags;
1278} 1736}
1279 1737
1280unsigned int 1738unsigned int
1281ev_backend (EV_P) 1739ev_backend (EV_P)
1282{ 1740{
1283 return backend; 1741 return backend;
1284} 1742}
1285 1743
1744#if EV_FEATURE_API
1286unsigned int 1745unsigned int
1287ev_loop_count (EV_P) 1746ev_iteration (EV_P)
1288{ 1747{
1289 return loop_count; 1748 return loop_count;
1749}
1750
1751unsigned int
1752ev_depth (EV_P)
1753{
1754 return loop_depth;
1290} 1755}
1291 1756
1292void 1757void
1293ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1758ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1294{ 1759{
… …
1299ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1764ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1300{ 1765{
1301 timeout_blocktime = interval; 1766 timeout_blocktime = interval;
1302} 1767}
1303 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 */
1304static void noinline 1796static void noinline ecb_cold
1305loop_init (EV_P_ unsigned int flags) 1797loop_init (EV_P_ unsigned int flags)
1306{ 1798{
1307 if (!backend) 1799 if (!backend)
1308 { 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
1309#if EV_USE_MONOTONIC 1813#if EV_USE_MONOTONIC
1814 if (!have_monotonic)
1310 { 1815 {
1311 struct timespec ts; 1816 struct timespec ts;
1817
1312 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1818 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1313 have_monotonic = 1; 1819 have_monotonic = 1;
1314 } 1820 }
1315#endif
1316
1317 ev_rt_now = ev_time ();
1318 mn_now = get_clock ();
1319 now_floor = mn_now;
1320 rtmn_diff = ev_rt_now - mn_now;
1321
1322 io_blocktime = 0.;
1323 timeout_blocktime = 0.;
1324 backend = 0;
1325 backend_fd = -1;
1326 gotasync = 0;
1327#if EV_USE_INOTIFY
1328 fs_fd = -2;
1329#endif 1821#endif
1330 1822
1331 /* pid check not overridable via env */ 1823 /* pid check not overridable via env */
1332#ifndef _WIN32 1824#ifndef _WIN32
1333 if (flags & EVFLAG_FORKCHECK) 1825 if (flags & EVFLAG_FORKCHECK)
… …
1337 if (!(flags & EVFLAG_NOENV) 1829 if (!(flags & EVFLAG_NOENV)
1338 && !enable_secure () 1830 && !enable_secure ()
1339 && getenv ("LIBEV_FLAGS")) 1831 && getenv ("LIBEV_FLAGS"))
1340 flags = atoi (getenv ("LIBEV_FLAGS")); 1832 flags = atoi (getenv ("LIBEV_FLAGS"));
1341 1833
1342 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))
1343 flags |= ev_recommended_backends (); 1860 flags |= ev_recommended_backends ();
1344 1861
1862#if EV_USE_IOCP
1863 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1864#endif
1345#if EV_USE_PORT 1865#if EV_USE_PORT
1346 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1866 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1347#endif 1867#endif
1348#if EV_USE_KQUEUE 1868#if EV_USE_KQUEUE
1349 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1869 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1356#endif 1876#endif
1357#if EV_USE_SELECT 1877#if EV_USE_SELECT
1358 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1878 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1359#endif 1879#endif
1360 1880
1881 ev_prepare_init (&pending_w, pendingcb);
1882
1883#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1361 ev_init (&pipeev, pipecb); 1884 ev_init (&pipe_w, pipecb);
1362 ev_set_priority (&pipeev, EV_MAXPRI); 1885 ev_set_priority (&pipe_w, EV_MAXPRI);
1886#endif
1363 } 1887 }
1364} 1888}
1365 1889
1366static void noinline 1890/* free up a loop structure */
1891void ecb_cold
1367loop_destroy (EV_P) 1892ev_loop_destroy (EV_P)
1368{ 1893{
1369 int i; 1894 int i;
1370 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
1371 if (ev_is_active (&pipeev)) 1919 if (ev_is_active (&pipe_w))
1372 { 1920 {
1373 ev_ref (EV_A); /* signal watcher */ 1921 /*ev_ref (EV_A);*/
1374 ev_io_stop (EV_A_ &pipeev); 1922 /*ev_io_stop (EV_A_ &pipe_w);*/
1375 1923
1376#if EV_USE_EVENTFD 1924#if EV_USE_EVENTFD
1377 if (evfd >= 0) 1925 if (evfd >= 0)
1378 close (evfd); 1926 close (evfd);
1379#endif 1927#endif
1380 1928
1381 if (evpipe [0] >= 0) 1929 if (evpipe [0] >= 0)
1382 { 1930 {
1383 close (evpipe [0]); 1931 EV_WIN32_CLOSE_FD (evpipe [0]);
1384 close (evpipe [1]); 1932 EV_WIN32_CLOSE_FD (evpipe [1]);
1385 } 1933 }
1386 } 1934 }
1935
1936#if EV_USE_SIGNALFD
1937 if (ev_is_active (&sigfd_w))
1938 close (sigfd);
1939#endif
1387 1940
1388#if EV_USE_INOTIFY 1941#if EV_USE_INOTIFY
1389 if (fs_fd >= 0) 1942 if (fs_fd >= 0)
1390 close (fs_fd); 1943 close (fs_fd);
1391#endif 1944#endif
1392 1945
1393 if (backend_fd >= 0) 1946 if (backend_fd >= 0)
1394 close (backend_fd); 1947 close (backend_fd);
1395 1948
1949#if EV_USE_IOCP
1950 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1951#endif
1396#if EV_USE_PORT 1952#if EV_USE_PORT
1397 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1953 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1398#endif 1954#endif
1399#if EV_USE_KQUEUE 1955#if EV_USE_KQUEUE
1400 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1956 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1415#if EV_IDLE_ENABLE 1971#if EV_IDLE_ENABLE
1416 array_free (idle, [i]); 1972 array_free (idle, [i]);
1417#endif 1973#endif
1418 } 1974 }
1419 1975
1420 ev_free (anfds); anfdmax = 0; 1976 ev_free (anfds); anfds = 0; anfdmax = 0;
1421 1977
1422 /* 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);
1423 array_free (fdchange, EMPTY); 1980 array_free (fdchange, EMPTY);
1424 array_free (timer, EMPTY); 1981 array_free (timer, EMPTY);
1425#if EV_PERIODIC_ENABLE 1982#if EV_PERIODIC_ENABLE
1426 array_free (periodic, EMPTY); 1983 array_free (periodic, EMPTY);
1427#endif 1984#endif
1428#if EV_FORK_ENABLE 1985#if EV_FORK_ENABLE
1429 array_free (fork, EMPTY); 1986 array_free (fork, EMPTY);
1430#endif 1987#endif
1988#if EV_CLEANUP_ENABLE
1989 array_free (cleanup, EMPTY);
1990#endif
1431 array_free (prepare, EMPTY); 1991 array_free (prepare, EMPTY);
1432 array_free (check, EMPTY); 1992 array_free (check, EMPTY);
1433#if EV_ASYNC_ENABLE 1993#if EV_ASYNC_ENABLE
1434 array_free (async, EMPTY); 1994 array_free (async, EMPTY);
1435#endif 1995#endif
1436 1996
1437 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
1438} 2007}
1439 2008
1440#if EV_USE_INOTIFY 2009#if EV_USE_INOTIFY
1441void inline_size infy_fork (EV_P); 2010inline_size void infy_fork (EV_P);
1442#endif 2011#endif
1443 2012
1444void inline_size 2013inline_size void
1445loop_fork (EV_P) 2014loop_fork (EV_P)
1446{ 2015{
1447#if EV_USE_PORT 2016#if EV_USE_PORT
1448 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2017 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1449#endif 2018#endif
… …
1455#endif 2024#endif
1456#if EV_USE_INOTIFY 2025#if EV_USE_INOTIFY
1457 infy_fork (EV_A); 2026 infy_fork (EV_A);
1458#endif 2027#endif
1459 2028
1460 if (ev_is_active (&pipeev)) 2029 if (ev_is_active (&pipe_w))
1461 { 2030 {
1462 /* this "locks" the handlers against writing to the pipe */ 2031 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1463 /* while we modify the fd vars */
1464 gotsig = 1;
1465#if EV_ASYNC_ENABLE
1466 gotasync = 1;
1467#endif
1468 2032
1469 ev_ref (EV_A); 2033 ev_ref (EV_A);
1470 ev_io_stop (EV_A_ &pipeev); 2034 ev_io_stop (EV_A_ &pipe_w);
1471 2035
1472#if EV_USE_EVENTFD 2036#if EV_USE_EVENTFD
1473 if (evfd >= 0) 2037 if (evfd >= 0)
1474 close (evfd); 2038 close (evfd);
1475#endif 2039#endif
1476 2040
1477 if (evpipe [0] >= 0) 2041 if (evpipe [0] >= 0)
1478 { 2042 {
1479 close (evpipe [0]); 2043 EV_WIN32_CLOSE_FD (evpipe [0]);
1480 close (evpipe [1]); 2044 EV_WIN32_CLOSE_FD (evpipe [1]);
1481 } 2045 }
1482 2046
2047#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1483 evpipe_init (EV_A); 2048 evpipe_init (EV_A);
1484 /* now iterate over everything, in case we missed something */ 2049 /* now iterate over everything, in case we missed something */
1485 pipecb (EV_A_ &pipeev, EV_READ); 2050 pipecb (EV_A_ &pipe_w, EV_READ);
2051#endif
1486 } 2052 }
1487 2053
1488 postfork = 0; 2054 postfork = 0;
1489} 2055}
1490 2056
1491#if EV_MULTIPLICITY 2057#if EV_MULTIPLICITY
1492 2058
1493struct ev_loop * 2059struct ev_loop * ecb_cold
1494ev_loop_new (unsigned int flags) 2060ev_loop_new (unsigned int flags)
1495{ 2061{
1496 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));
1497 2063
1498 memset (loop, 0, sizeof (struct ev_loop)); 2064 memset (EV_A, 0, sizeof (struct ev_loop));
1499
1500 loop_init (EV_A_ flags); 2065 loop_init (EV_A_ flags);
1501 2066
1502 if (ev_backend (EV_A)) 2067 if (ev_backend (EV_A))
1503 return loop; 2068 return EV_A;
1504 2069
2070 ev_free (EV_A);
1505 return 0; 2071 return 0;
1506} 2072}
1507 2073
1508void 2074#endif /* multiplicity */
1509ev_loop_destroy (EV_P)
1510{
1511 loop_destroy (EV_A);
1512 ev_free (loop);
1513}
1514
1515void
1516ev_loop_fork (EV_P)
1517{
1518 postfork = 1; /* must be in line with ev_default_fork */
1519}
1520 2075
1521#if EV_VERIFY 2076#if EV_VERIFY
1522static void noinline 2077static void noinline ecb_cold
1523verify_watcher (EV_P_ W w) 2078verify_watcher (EV_P_ W w)
1524{ 2079{
1525 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2080 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1526 2081
1527 if (w->pending) 2082 if (w->pending)
1528 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));
1529} 2084}
1530 2085
1531static void noinline 2086static void noinline ecb_cold
1532verify_heap (EV_P_ ANHE *heap, int N) 2087verify_heap (EV_P_ ANHE *heap, int N)
1533{ 2088{
1534 int i; 2089 int i;
1535 2090
1536 for (i = HEAP0; i < N + HEAP0; ++i) 2091 for (i = HEAP0; i < N + HEAP0; ++i)
1537 { 2092 {
1538 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));
1539 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])));
1540 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]))));
1541 2096
1542 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2097 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1543 } 2098 }
1544} 2099}
1545 2100
1546static void noinline 2101static void noinline ecb_cold
1547array_verify (EV_P_ W *ws, int cnt) 2102array_verify (EV_P_ W *ws, int cnt)
1548{ 2103{
1549 while (cnt--) 2104 while (cnt--)
1550 { 2105 {
1551 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2106 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1552 verify_watcher (EV_A_ ws [cnt]); 2107 verify_watcher (EV_A_ ws [cnt]);
1553 } 2108 }
1554} 2109}
1555#endif 2110#endif
1556 2111
1557void 2112#if EV_FEATURE_API
2113void ecb_cold
1558ev_loop_verify (EV_P) 2114ev_verify (EV_P)
1559{ 2115{
1560#if EV_VERIFY 2116#if EV_VERIFY
1561 int i; 2117 int i;
1562 WL w; 2118 WL w;
1563 2119
1564 assert (activecnt >= -1); 2120 assert (activecnt >= -1);
1565 2121
1566 assert (fdchangemax >= fdchangecnt); 2122 assert (fdchangemax >= fdchangecnt);
1567 for (i = 0; i < fdchangecnt; ++i) 2123 for (i = 0; i < fdchangecnt; ++i)
1568 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 2124 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1569 2125
1570 assert (anfdmax >= 0); 2126 assert (anfdmax >= 0);
1571 for (i = 0; i < anfdmax; ++i) 2127 for (i = 0; i < anfdmax; ++i)
1572 for (w = anfds [i].head; w; w = w->next) 2128 for (w = anfds [i].head; w; w = w->next)
1573 { 2129 {
1574 verify_watcher (EV_A_ (W)w); 2130 verify_watcher (EV_A_ (W)w);
1575 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 2131 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1576 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));
1577 } 2133 }
1578 2134
1579 assert (timermax >= timercnt); 2135 assert (timermax >= timercnt);
1580 verify_heap (EV_A_ timers, timercnt); 2136 verify_heap (EV_A_ timers, timercnt);
1581 2137
… …
1597#if EV_FORK_ENABLE 2153#if EV_FORK_ENABLE
1598 assert (forkmax >= forkcnt); 2154 assert (forkmax >= forkcnt);
1599 array_verify (EV_A_ (W *)forks, forkcnt); 2155 array_verify (EV_A_ (W *)forks, forkcnt);
1600#endif 2156#endif
1601 2157
2158#if EV_CLEANUP_ENABLE
2159 assert (cleanupmax >= cleanupcnt);
2160 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2161#endif
2162
1602#if EV_ASYNC_ENABLE 2163#if EV_ASYNC_ENABLE
1603 assert (asyncmax >= asynccnt); 2164 assert (asyncmax >= asynccnt);
1604 array_verify (EV_A_ (W *)asyncs, asynccnt); 2165 array_verify (EV_A_ (W *)asyncs, asynccnt);
1605#endif 2166#endif
1606 2167
2168#if EV_PREPARE_ENABLE
1607 assert (preparemax >= preparecnt); 2169 assert (preparemax >= preparecnt);
1608 array_verify (EV_A_ (W *)prepares, preparecnt); 2170 array_verify (EV_A_ (W *)prepares, preparecnt);
2171#endif
1609 2172
2173#if EV_CHECK_ENABLE
1610 assert (checkmax >= checkcnt); 2174 assert (checkmax >= checkcnt);
1611 array_verify (EV_A_ (W *)checks, checkcnt); 2175 array_verify (EV_A_ (W *)checks, checkcnt);
2176#endif
1612 2177
1613# if 0 2178# if 0
2179#if EV_CHILD_ENABLE
1614 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)
1615 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2181 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2182#endif
1616# endif 2183# endif
1617#endif 2184#endif
1618} 2185}
1619 2186#endif
1620#endif /* multiplicity */
1621 2187
1622#if EV_MULTIPLICITY 2188#if EV_MULTIPLICITY
1623struct ev_loop * 2189struct ev_loop * ecb_cold
1624ev_default_loop_init (unsigned int flags)
1625#else 2190#else
1626int 2191int
2192#endif
1627ev_default_loop (unsigned int flags) 2193ev_default_loop (unsigned int flags)
1628#endif
1629{ 2194{
1630 if (!ev_default_loop_ptr) 2195 if (!ev_default_loop_ptr)
1631 { 2196 {
1632#if EV_MULTIPLICITY 2197#if EV_MULTIPLICITY
1633 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2198 EV_P = ev_default_loop_ptr = &default_loop_struct;
1634#else 2199#else
1635 ev_default_loop_ptr = 1; 2200 ev_default_loop_ptr = 1;
1636#endif 2201#endif
1637 2202
1638 loop_init (EV_A_ flags); 2203 loop_init (EV_A_ flags);
1639 2204
1640 if (ev_backend (EV_A)) 2205 if (ev_backend (EV_A))
1641 { 2206 {
1642#ifndef _WIN32 2207#if EV_CHILD_ENABLE
1643 ev_signal_init (&childev, childcb, SIGCHLD); 2208 ev_signal_init (&childev, childcb, SIGCHLD);
1644 ev_set_priority (&childev, EV_MAXPRI); 2209 ev_set_priority (&childev, EV_MAXPRI);
1645 ev_signal_start (EV_A_ &childev); 2210 ev_signal_start (EV_A_ &childev);
1646 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2211 ev_unref (EV_A); /* child watcher should not keep loop alive */
1647#endif 2212#endif
… …
1652 2217
1653 return ev_default_loop_ptr; 2218 return ev_default_loop_ptr;
1654} 2219}
1655 2220
1656void 2221void
1657ev_default_destroy (void) 2222ev_loop_fork (EV_P)
1658{ 2223{
1659#if EV_MULTIPLICITY
1660 struct ev_loop *loop = ev_default_loop_ptr;
1661#endif
1662
1663#ifndef _WIN32
1664 ev_ref (EV_A); /* child watcher */
1665 ev_signal_stop (EV_A_ &childev);
1666#endif
1667
1668 loop_destroy (EV_A);
1669}
1670
1671void
1672ev_default_fork (void)
1673{
1674#if EV_MULTIPLICITY
1675 struct ev_loop *loop = ev_default_loop_ptr;
1676#endif
1677
1678 if (backend)
1679 postfork = 1; /* must be in line with ev_loop_fork */ 2224 postfork = 1; /* must be in line with ev_default_fork */
1680} 2225}
1681 2226
1682/*****************************************************************************/ 2227/*****************************************************************************/
1683 2228
1684void 2229void
1685ev_invoke (EV_P_ void *w, int revents) 2230ev_invoke (EV_P_ void *w, int revents)
1686{ 2231{
1687 EV_CB_INVOKE ((W)w, revents); 2232 EV_CB_INVOKE ((W)w, revents);
1688} 2233}
1689 2234
1690void inline_speed 2235unsigned int
1691call_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)
1692{ 2249{
1693 int pri; 2250 int pri;
1694 2251
1695 for (pri = NUMPRI; pri--; ) 2252 for (pri = NUMPRI; pri--; )
1696 while (pendingcnt [pri]) 2253 while (pendingcnt [pri])
1697 { 2254 {
1698 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2255 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1699 2256
1700 if (expect_true (p->w))
1701 {
1702 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1703
1704 p->w->pending = 0; 2257 p->w->pending = 0;
1705 EV_CB_INVOKE (p->w, p->events); 2258 EV_CB_INVOKE (p->w, p->events);
1706 EV_FREQUENT_CHECK; 2259 EV_FREQUENT_CHECK;
1707 }
1708 } 2260 }
1709} 2261}
1710 2262
1711#if EV_IDLE_ENABLE 2263#if EV_IDLE_ENABLE
1712void inline_size 2264/* make idle watchers pending. this handles the "call-idle */
2265/* only when higher priorities are idle" logic */
2266inline_size void
1713idle_reify (EV_P) 2267idle_reify (EV_P)
1714{ 2268{
1715 if (expect_false (idleall)) 2269 if (expect_false (idleall))
1716 { 2270 {
1717 int pri; 2271 int pri;
… …
1729 } 2283 }
1730 } 2284 }
1731} 2285}
1732#endif 2286#endif
1733 2287
1734void inline_size 2288/* make timers pending */
2289inline_size void
1735timers_reify (EV_P) 2290timers_reify (EV_P)
1736{ 2291{
1737 EV_FREQUENT_CHECK; 2292 EV_FREQUENT_CHECK;
1738 2293
1739 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2294 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1740 { 2295 {
1741 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2296 do
1742
1743 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1744
1745 /* first reschedule or stop timer */
1746 if (w->repeat)
1747 { 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 {
1748 ev_at (w) += w->repeat; 2305 ev_at (w) += w->repeat;
1749 if (ev_at (w) < mn_now) 2306 if (ev_at (w) < mn_now)
1750 ev_at (w) = mn_now; 2307 ev_at (w) = mn_now;
1751 2308
1752 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.));
1753 2310
1754 ANHE_at_cache (timers [HEAP0]); 2311 ANHE_at_cache (timers [HEAP0]);
1755 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);
1756 } 2319 }
1757 else 2320 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1758 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1759 2321
1760 EV_FREQUENT_CHECK; 2322 feed_reverse_done (EV_A_ EV_TIMER);
1761 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1762 } 2323 }
1763} 2324}
1764 2325
1765#if EV_PERIODIC_ENABLE 2326#if EV_PERIODIC_ENABLE
1766void 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
1767periodics_reify (EV_P) 2354periodics_reify (EV_P)
1768{ 2355{
1769 EV_FREQUENT_CHECK; 2356 EV_FREQUENT_CHECK;
1770 2357
1771 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2358 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1772 { 2359 {
1773 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2360 int feed_count = 0;
1774 2361
1775 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2362 do
1776
1777 /* first reschedule or stop timer */
1778 if (w->reschedule_cb)
1779 { 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 {
1780 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2371 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1781 2372
1782 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));
1783 2374
1784 ANHE_at_cache (periodics [HEAP0]); 2375 ANHE_at_cache (periodics [HEAP0]);
1785 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);
1786 } 2389 }
1787 else if (w->interval) 2390 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1788 {
1789 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1790 /* if next trigger time is not sufficiently in the future, put it there */
1791 /* this might happen because of floating point inexactness */
1792 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1793 {
1794 ev_at (w) += w->interval;
1795 2391
1796 /* if interval is unreasonably low we might still have a time in the past */
1797 /* so correct this. this will make the periodic very inexact, but the user */
1798 /* has effectively asked to get triggered more often than possible */
1799 if (ev_at (w) < ev_rt_now)
1800 ev_at (w) = ev_rt_now;
1801 }
1802
1803 ANHE_at_cache (periodics [HEAP0]);
1804 downheap (periodics, periodiccnt, HEAP0);
1805 }
1806 else
1807 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1808
1809 EV_FREQUENT_CHECK;
1810 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2392 feed_reverse_done (EV_A_ EV_PERIODIC);
1811 } 2393 }
1812} 2394}
1813 2395
2396/* simply recalculate all periodics */
2397/* TODO: maybe ensure that at least one event happens when jumping forward? */
1814static void noinline 2398static void noinline ecb_cold
1815periodics_reschedule (EV_P) 2399periodics_reschedule (EV_P)
1816{ 2400{
1817 int i; 2401 int i;
1818 2402
1819 /* adjust periodics after time jump */ 2403 /* adjust periodics after time jump */
… …
1822 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2406 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1823 2407
1824 if (w->reschedule_cb) 2408 if (w->reschedule_cb)
1825 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2409 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1826 else if (w->interval) 2410 else if (w->interval)
1827 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2411 periodic_recalc (EV_A_ w);
1828 2412
1829 ANHE_at_cache (periodics [i]); 2413 ANHE_at_cache (periodics [i]);
1830 } 2414 }
1831 2415
1832 reheap (periodics, periodiccnt); 2416 reheap (periodics, periodiccnt);
1833} 2417}
1834#endif 2418#endif
1835 2419
1836void 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
1837time_update (EV_P_ ev_tstamp max_block) 2437time_update (EV_P_ ev_tstamp max_block)
1838{ 2438{
1839 int i;
1840
1841#if EV_USE_MONOTONIC 2439#if EV_USE_MONOTONIC
1842 if (expect_true (have_monotonic)) 2440 if (expect_true (have_monotonic))
1843 { 2441 {
2442 int i;
1844 ev_tstamp odiff = rtmn_diff; 2443 ev_tstamp odiff = rtmn_diff;
1845 2444
1846 mn_now = get_clock (); 2445 mn_now = get_clock ();
1847 2446
1848 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2447 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1864 * 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
1865 * in the unlikely event of having been preempted here. 2464 * in the unlikely event of having been preempted here.
1866 */ 2465 */
1867 for (i = 4; --i; ) 2466 for (i = 4; --i; )
1868 { 2467 {
2468 ev_tstamp diff;
1869 rtmn_diff = ev_rt_now - mn_now; 2469 rtmn_diff = ev_rt_now - mn_now;
1870 2470
2471 diff = odiff - rtmn_diff;
2472
1871 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2473 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1872 return; /* all is well */ 2474 return; /* all is well */
1873 2475
1874 ev_rt_now = ev_time (); 2476 ev_rt_now = ev_time ();
1875 mn_now = get_clock (); 2477 mn_now = get_clock ();
1876 now_floor = mn_now; 2478 now_floor = mn_now;
1877 } 2479 }
1878 2480
2481 /* no timer adjustment, as the monotonic clock doesn't jump */
2482 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1879# if EV_PERIODIC_ENABLE 2483# if EV_PERIODIC_ENABLE
1880 periodics_reschedule (EV_A); 2484 periodics_reschedule (EV_A);
1881# endif 2485# endif
1882 /* no timer adjustment, as the monotonic clock doesn't jump */
1883 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1884 } 2486 }
1885 else 2487 else
1886#endif 2488#endif
1887 { 2489 {
1888 ev_rt_now = ev_time (); 2490 ev_rt_now = ev_time ();
1889 2491
1890 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))
1891 { 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);
1892#if EV_PERIODIC_ENABLE 2496#if EV_PERIODIC_ENABLE
1893 periodics_reschedule (EV_A); 2497 periodics_reschedule (EV_A);
1894#endif 2498#endif
1895 /* adjust timers. this is easy, as the offset is the same for all of them */
1896 for (i = 0; i < timercnt; ++i)
1897 {
1898 ANHE *he = timers + i + HEAP0;
1899 ANHE_w (*he)->at += ev_rt_now - mn_now;
1900 ANHE_at_cache (*he);
1901 }
1902 } 2499 }
1903 2500
1904 mn_now = ev_rt_now; 2501 mn_now = ev_rt_now;
1905 } 2502 }
1906} 2503}
1907 2504
1908void 2505void
1909ev_ref (EV_P)
1910{
1911 ++activecnt;
1912}
1913
1914void
1915ev_unref (EV_P)
1916{
1917 --activecnt;
1918}
1919
1920void
1921ev_now_update (EV_P)
1922{
1923 time_update (EV_A_ 1e100);
1924}
1925
1926static int loop_done;
1927
1928void
1929ev_loop (EV_P_ int flags) 2506ev_run (EV_P_ int flags)
1930{ 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
1931 loop_done = EVUNLOOP_CANCEL; 2514 loop_done = EVBREAK_CANCEL;
1932 2515
1933 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 */
1934 2517
1935 do 2518 do
1936 { 2519 {
1937#if EV_VERIFY >= 2 2520#if EV_VERIFY >= 2
1938 ev_loop_verify (EV_A); 2521 ev_verify (EV_A);
1939#endif 2522#endif
1940 2523
1941#ifndef _WIN32 2524#ifndef _WIN32
1942 if (expect_false (curpid)) /* penalise the forking check even more */ 2525 if (expect_false (curpid)) /* penalise the forking check even more */
1943 if (expect_false (getpid () != curpid)) 2526 if (expect_false (getpid () != curpid))
… …
1951 /* we might have forked, so queue fork handlers */ 2534 /* we might have forked, so queue fork handlers */
1952 if (expect_false (postfork)) 2535 if (expect_false (postfork))
1953 if (forkcnt) 2536 if (forkcnt)
1954 { 2537 {
1955 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2538 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1956 call_pending (EV_A); 2539 EV_INVOKE_PENDING;
1957 } 2540 }
1958#endif 2541#endif
1959 2542
2543#if EV_PREPARE_ENABLE
1960 /* queue prepare watchers (and execute them) */ 2544 /* queue prepare watchers (and execute them) */
1961 if (expect_false (preparecnt)) 2545 if (expect_false (preparecnt))
1962 { 2546 {
1963 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2547 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1964 call_pending (EV_A); 2548 EV_INVOKE_PENDING;
1965 } 2549 }
2550#endif
1966 2551
1967 if (expect_false (!activecnt)) 2552 if (expect_false (loop_done))
1968 break; 2553 break;
1969 2554
1970 /* we might have forked, so reify kernel state if necessary */ 2555 /* we might have forked, so reify kernel state if necessary */
1971 if (expect_false (postfork)) 2556 if (expect_false (postfork))
1972 loop_fork (EV_A); 2557 loop_fork (EV_A);
… …
1977 /* calculate blocking time */ 2562 /* calculate blocking time */
1978 { 2563 {
1979 ev_tstamp waittime = 0.; 2564 ev_tstamp waittime = 0.;
1980 ev_tstamp sleeptime = 0.; 2565 ev_tstamp sleeptime = 0.;
1981 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
1982 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2576 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1983 { 2577 {
1984 /* update time to cancel out callback processing overhead */
1985 time_update (EV_A_ 1e100);
1986
1987 waittime = MAX_BLOCKTIME; 2578 waittime = MAX_BLOCKTIME;
1988 2579
1989 if (timercnt) 2580 if (timercnt)
1990 { 2581 {
1991 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2582 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1992 if (waittime > to) waittime = to; 2583 if (waittime > to) waittime = to;
1993 } 2584 }
1994 2585
1995#if EV_PERIODIC_ENABLE 2586#if EV_PERIODIC_ENABLE
1996 if (periodiccnt) 2587 if (periodiccnt)
1997 { 2588 {
1998 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2589 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1999 if (waittime > to) waittime = to; 2590 if (waittime > to) waittime = to;
2000 } 2591 }
2001#endif 2592#endif
2002 2593
2594 /* don't let timeouts decrease the waittime below timeout_blocktime */
2003 if (expect_false (waittime < timeout_blocktime)) 2595 if (expect_false (waittime < timeout_blocktime))
2004 waittime = timeout_blocktime; 2596 waittime = timeout_blocktime;
2005 2597
2006 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;
2007 2602
2603 /* extra check because io_blocktime is commonly 0 */
2008 if (expect_true (sleeptime > io_blocktime)) 2604 if (expect_false (io_blocktime))
2009 sleeptime = io_blocktime;
2010
2011 if (sleeptime)
2012 { 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 {
2013 ev_sleep (sleeptime); 2613 ev_sleep (sleeptime);
2014 waittime -= sleeptime; 2614 waittime -= sleeptime;
2615 }
2015 } 2616 }
2016 } 2617 }
2017 2618
2619#if EV_FEATURE_API
2018 ++loop_count; 2620 ++loop_count;
2621#endif
2622 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2019 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
2020 2634
2021 /* update ev_rt_now, do magic */ 2635 /* update ev_rt_now, do magic */
2022 time_update (EV_A_ waittime + sleeptime); 2636 time_update (EV_A_ waittime + sleeptime);
2023 } 2637 }
2024 2638
… …
2031#if EV_IDLE_ENABLE 2645#if EV_IDLE_ENABLE
2032 /* queue idle watchers unless other events are pending */ 2646 /* queue idle watchers unless other events are pending */
2033 idle_reify (EV_A); 2647 idle_reify (EV_A);
2034#endif 2648#endif
2035 2649
2650#if EV_CHECK_ENABLE
2036 /* queue check watchers, to be executed first */ 2651 /* queue check watchers, to be executed first */
2037 if (expect_false (checkcnt)) 2652 if (expect_false (checkcnt))
2038 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2653 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2654#endif
2039 2655
2040 call_pending (EV_A); 2656 EV_INVOKE_PENDING;
2041 } 2657 }
2042 while (expect_true ( 2658 while (expect_true (
2043 activecnt 2659 activecnt
2044 && !loop_done 2660 && !loop_done
2045 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2661 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2046 )); 2662 ));
2047 2663
2048 if (loop_done == EVUNLOOP_ONE) 2664 if (loop_done == EVBREAK_ONE)
2049 loop_done = EVUNLOOP_CANCEL; 2665 loop_done = EVBREAK_CANCEL;
2666
2667#if EV_FEATURE_API
2668 --loop_depth;
2669#endif
2050} 2670}
2051 2671
2052void 2672void
2053ev_unloop (EV_P_ int how) 2673ev_break (EV_P_ int how)
2054{ 2674{
2055 loop_done = how; 2675 loop_done = how;
2056} 2676}
2057 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
2058/*****************************************************************************/ 2715/*****************************************************************************/
2716/* singly-linked list management, used when the expected list length is short */
2059 2717
2060void inline_size 2718inline_size void
2061wlist_add (WL *head, WL elem) 2719wlist_add (WL *head, WL elem)
2062{ 2720{
2063 elem->next = *head; 2721 elem->next = *head;
2064 *head = elem; 2722 *head = elem;
2065} 2723}
2066 2724
2067void inline_size 2725inline_size void
2068wlist_del (WL *head, WL elem) 2726wlist_del (WL *head, WL elem)
2069{ 2727{
2070 while (*head) 2728 while (*head)
2071 { 2729 {
2072 if (*head == elem) 2730 if (expect_true (*head == elem))
2073 { 2731 {
2074 *head = elem->next; 2732 *head = elem->next;
2075 return; 2733 break;
2076 } 2734 }
2077 2735
2078 head = &(*head)->next; 2736 head = &(*head)->next;
2079 } 2737 }
2080} 2738}
2081 2739
2082void inline_speed 2740/* internal, faster, version of ev_clear_pending */
2741inline_speed void
2083clear_pending (EV_P_ W w) 2742clear_pending (EV_P_ W w)
2084{ 2743{
2085 if (w->pending) 2744 if (w->pending)
2086 { 2745 {
2087 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2746 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2088 w->pending = 0; 2747 w->pending = 0;
2089 } 2748 }
2090} 2749}
2091 2750
2092int 2751int
… …
2096 int pending = w_->pending; 2755 int pending = w_->pending;
2097 2756
2098 if (expect_true (pending)) 2757 if (expect_true (pending))
2099 { 2758 {
2100 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2759 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2760 p->w = (W)&pending_w;
2101 w_->pending = 0; 2761 w_->pending = 0;
2102 p->w = 0;
2103 return p->events; 2762 return p->events;
2104 } 2763 }
2105 else 2764 else
2106 return 0; 2765 return 0;
2107} 2766}
2108 2767
2109void inline_size 2768inline_size void
2110pri_adjust (EV_P_ W w) 2769pri_adjust (EV_P_ W w)
2111{ 2770{
2112 int pri = w->priority; 2771 int pri = ev_priority (w);
2113 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2772 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2114 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2773 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2115 w->priority = pri; 2774 ev_set_priority (w, pri);
2116} 2775}
2117 2776
2118void inline_speed 2777inline_speed void
2119ev_start (EV_P_ W w, int active) 2778ev_start (EV_P_ W w, int active)
2120{ 2779{
2121 pri_adjust (EV_A_ w); 2780 pri_adjust (EV_A_ w);
2122 w->active = active; 2781 w->active = active;
2123 ev_ref (EV_A); 2782 ev_ref (EV_A);
2124} 2783}
2125 2784
2126void inline_size 2785inline_size void
2127ev_stop (EV_P_ W w) 2786ev_stop (EV_P_ W w)
2128{ 2787{
2129 ev_unref (EV_A); 2788 ev_unref (EV_A);
2130 w->active = 0; 2789 w->active = 0;
2131} 2790}
… …
2138 int fd = w->fd; 2797 int fd = w->fd;
2139 2798
2140 if (expect_false (ev_is_active (w))) 2799 if (expect_false (ev_is_active (w)))
2141 return; 2800 return;
2142 2801
2143 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))));
2144 2804
2145 EV_FREQUENT_CHECK; 2805 EV_FREQUENT_CHECK;
2146 2806
2147 ev_start (EV_A_ (W)w, 1); 2807 ev_start (EV_A_ (W)w, 1);
2148 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2808 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2149 wlist_add (&anfds[fd].head, (WL)w); 2809 wlist_add (&anfds[fd].head, (WL)w);
2150 2810
2151 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2811 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2152 w->events &= ~EV_IOFDSET; 2812 w->events &= ~EV__IOFDSET;
2153 2813
2154 EV_FREQUENT_CHECK; 2814 EV_FREQUENT_CHECK;
2155} 2815}
2156 2816
2157void noinline 2817void noinline
… …
2159{ 2819{
2160 clear_pending (EV_A_ (W)w); 2820 clear_pending (EV_A_ (W)w);
2161 if (expect_false (!ev_is_active (w))) 2821 if (expect_false (!ev_is_active (w)))
2162 return; 2822 return;
2163 2823
2164 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));
2165 2825
2166 EV_FREQUENT_CHECK; 2826 EV_FREQUENT_CHECK;
2167 2827
2168 wlist_del (&anfds[w->fd].head, (WL)w); 2828 wlist_del (&anfds[w->fd].head, (WL)w);
2169 ev_stop (EV_A_ (W)w); 2829 ev_stop (EV_A_ (W)w);
2170 2830
2171 fd_change (EV_A_ w->fd, 1); 2831 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2172 2832
2173 EV_FREQUENT_CHECK; 2833 EV_FREQUENT_CHECK;
2174} 2834}
2175 2835
2176void noinline 2836void noinline
… …
2179 if (expect_false (ev_is_active (w))) 2839 if (expect_false (ev_is_active (w)))
2180 return; 2840 return;
2181 2841
2182 ev_at (w) += mn_now; 2842 ev_at (w) += mn_now;
2183 2843
2184 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.));
2185 2845
2186 EV_FREQUENT_CHECK; 2846 EV_FREQUENT_CHECK;
2187 2847
2188 ++timercnt; 2848 ++timercnt;
2189 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2849 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2192 ANHE_at_cache (timers [ev_active (w)]); 2852 ANHE_at_cache (timers [ev_active (w)]);
2193 upheap (timers, ev_active (w)); 2853 upheap (timers, ev_active (w));
2194 2854
2195 EV_FREQUENT_CHECK; 2855 EV_FREQUENT_CHECK;
2196 2856
2197 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2857 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2198} 2858}
2199 2859
2200void noinline 2860void noinline
2201ev_timer_stop (EV_P_ ev_timer *w) 2861ev_timer_stop (EV_P_ ev_timer *w)
2202{ 2862{
… …
2207 EV_FREQUENT_CHECK; 2867 EV_FREQUENT_CHECK;
2208 2868
2209 { 2869 {
2210 int active = ev_active (w); 2870 int active = ev_active (w);
2211 2871
2212 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2872 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2213 2873
2214 --timercnt; 2874 --timercnt;
2215 2875
2216 if (expect_true (active < timercnt + HEAP0)) 2876 if (expect_true (active < timercnt + HEAP0))
2217 { 2877 {
2218 timers [active] = timers [timercnt + HEAP0]; 2878 timers [active] = timers [timercnt + HEAP0];
2219 adjustheap (timers, timercnt, active); 2879 adjustheap (timers, timercnt, active);
2220 } 2880 }
2221 } 2881 }
2222 2882
2223 EV_FREQUENT_CHECK;
2224
2225 ev_at (w) -= mn_now; 2883 ev_at (w) -= mn_now;
2226 2884
2227 ev_stop (EV_A_ (W)w); 2885 ev_stop (EV_A_ (W)w);
2886
2887 EV_FREQUENT_CHECK;
2228} 2888}
2229 2889
2230void noinline 2890void noinline
2231ev_timer_again (EV_P_ ev_timer *w) 2891ev_timer_again (EV_P_ ev_timer *w)
2232{ 2892{
… …
2250 } 2910 }
2251 2911
2252 EV_FREQUENT_CHECK; 2912 EV_FREQUENT_CHECK;
2253} 2913}
2254 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
2255#if EV_PERIODIC_ENABLE 2921#if EV_PERIODIC_ENABLE
2256void noinline 2922void noinline
2257ev_periodic_start (EV_P_ ev_periodic *w) 2923ev_periodic_start (EV_P_ ev_periodic *w)
2258{ 2924{
2259 if (expect_false (ev_is_active (w))) 2925 if (expect_false (ev_is_active (w)))
… …
2261 2927
2262 if (w->reschedule_cb) 2928 if (w->reschedule_cb)
2263 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2929 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2264 else if (w->interval) 2930 else if (w->interval)
2265 { 2931 {
2266 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.));
2267 /* this formula differs from the one in periodic_reify because we do not always round up */ 2933 periodic_recalc (EV_A_ w);
2268 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2269 } 2934 }
2270 else 2935 else
2271 ev_at (w) = w->offset; 2936 ev_at (w) = w->offset;
2272 2937
2273 EV_FREQUENT_CHECK; 2938 EV_FREQUENT_CHECK;
… …
2279 ANHE_at_cache (periodics [ev_active (w)]); 2944 ANHE_at_cache (periodics [ev_active (w)]);
2280 upheap (periodics, ev_active (w)); 2945 upheap (periodics, ev_active (w));
2281 2946
2282 EV_FREQUENT_CHECK; 2947 EV_FREQUENT_CHECK;
2283 2948
2284 /*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));*/
2285} 2950}
2286 2951
2287void noinline 2952void noinline
2288ev_periodic_stop (EV_P_ ev_periodic *w) 2953ev_periodic_stop (EV_P_ ev_periodic *w)
2289{ 2954{
… …
2294 EV_FREQUENT_CHECK; 2959 EV_FREQUENT_CHECK;
2295 2960
2296 { 2961 {
2297 int active = ev_active (w); 2962 int active = ev_active (w);
2298 2963
2299 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2964 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2300 2965
2301 --periodiccnt; 2966 --periodiccnt;
2302 2967
2303 if (expect_true (active < periodiccnt + HEAP0)) 2968 if (expect_true (active < periodiccnt + HEAP0))
2304 { 2969 {
2305 periodics [active] = periodics [periodiccnt + HEAP0]; 2970 periodics [active] = periodics [periodiccnt + HEAP0];
2306 adjustheap (periodics, periodiccnt, active); 2971 adjustheap (periodics, periodiccnt, active);
2307 } 2972 }
2308 } 2973 }
2309 2974
2310 EV_FREQUENT_CHECK;
2311
2312 ev_stop (EV_A_ (W)w); 2975 ev_stop (EV_A_ (W)w);
2976
2977 EV_FREQUENT_CHECK;
2313} 2978}
2314 2979
2315void noinline 2980void noinline
2316ev_periodic_again (EV_P_ ev_periodic *w) 2981ev_periodic_again (EV_P_ ev_periodic *w)
2317{ 2982{
… …
2323 2988
2324#ifndef SA_RESTART 2989#ifndef SA_RESTART
2325# define SA_RESTART 0 2990# define SA_RESTART 0
2326#endif 2991#endif
2327 2992
2993#if EV_SIGNAL_ENABLE
2994
2328void noinline 2995void noinline
2329ev_signal_start (EV_P_ ev_signal *w) 2996ev_signal_start (EV_P_ ev_signal *w)
2330{ 2997{
2331#if EV_MULTIPLICITY
2332 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2333#endif
2334 if (expect_false (ev_is_active (w))) 2998 if (expect_false (ev_is_active (w)))
2335 return; 2999 return;
2336 3000
2337 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));
2338 3002
2339 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));
2340 3006
2341 EV_FREQUENT_CHECK; 3007 signals [w->signum - 1].loop = EV_A;
3008#endif
2342 3009
3010 EV_FREQUENT_CHECK;
3011
3012#if EV_USE_SIGNALFD
3013 if (sigfd == -2)
2343 { 3014 {
2344#ifndef _WIN32 3015 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2345 sigset_t full, prev; 3016 if (sigfd < 0 && errno == EINVAL)
2346 sigfillset (&full); 3017 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2347 sigprocmask (SIG_SETMASK, &full, &prev);
2348#endif
2349 3018
2350 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3019 if (sigfd >= 0)
3020 {
3021 fd_intern (sigfd); /* doing it twice will not hurt */
2351 3022
2352#ifndef _WIN32 3023 sigemptyset (&sigfd_set);
2353 sigprocmask (SIG_SETMASK, &prev, 0); 3024
2354#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 }
2355 } 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
2356 3041
2357 ev_start (EV_A_ (W)w, 1); 3042 ev_start (EV_A_ (W)w, 1);
2358 wlist_add (&signals [w->signum - 1].head, (WL)w); 3043 wlist_add (&signals [w->signum - 1].head, (WL)w);
2359 3044
2360 if (!((WL)w)->next) 3045 if (!((WL)w)->next)
3046# if EV_USE_SIGNALFD
3047 if (sigfd < 0) /*TODO*/
3048# endif
2361 { 3049 {
2362#if _WIN32 3050# ifdef _WIN32
3051 evpipe_init (EV_A);
3052
2363 signal (w->signum, ev_sighandler); 3053 signal (w->signum, ev_sighandler);
2364#else 3054# else
2365 struct sigaction sa; 3055 struct sigaction sa;
3056
3057 evpipe_init (EV_A);
3058
2366 sa.sa_handler = ev_sighandler; 3059 sa.sa_handler = ev_sighandler;
2367 sigfillset (&sa.sa_mask); 3060 sigfillset (&sa.sa_mask);
2368 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 */
2369 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 }
2370#endif 3070#endif
2371 } 3071 }
2372 3072
2373 EV_FREQUENT_CHECK; 3073 EV_FREQUENT_CHECK;
2374} 3074}
2375 3075
2376void noinline 3076void noinline
… …
2384 3084
2385 wlist_del (&signals [w->signum - 1].head, (WL)w); 3085 wlist_del (&signals [w->signum - 1].head, (WL)w);
2386 ev_stop (EV_A_ (W)w); 3086 ev_stop (EV_A_ (W)w);
2387 3087
2388 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
2389 signal (w->signum, SIG_DFL); 3107 signal (w->signum, SIG_DFL);
3108 }
2390 3109
2391 EV_FREQUENT_CHECK; 3110 EV_FREQUENT_CHECK;
2392} 3111}
3112
3113#endif
3114
3115#if EV_CHILD_ENABLE
2393 3116
2394void 3117void
2395ev_child_start (EV_P_ ev_child *w) 3118ev_child_start (EV_P_ ev_child *w)
2396{ 3119{
2397#if EV_MULTIPLICITY 3120#if EV_MULTIPLICITY
2398 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));
2399#endif 3122#endif
2400 if (expect_false (ev_is_active (w))) 3123 if (expect_false (ev_is_active (w)))
2401 return; 3124 return;
2402 3125
2403 EV_FREQUENT_CHECK; 3126 EV_FREQUENT_CHECK;
2404 3127
2405 ev_start (EV_A_ (W)w, 1); 3128 ev_start (EV_A_ (W)w, 1);
2406 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3129 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2407 3130
2408 EV_FREQUENT_CHECK; 3131 EV_FREQUENT_CHECK;
2409} 3132}
2410 3133
2411void 3134void
… …
2415 if (expect_false (!ev_is_active (w))) 3138 if (expect_false (!ev_is_active (w)))
2416 return; 3139 return;
2417 3140
2418 EV_FREQUENT_CHECK; 3141 EV_FREQUENT_CHECK;
2419 3142
2420 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3143 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2421 ev_stop (EV_A_ (W)w); 3144 ev_stop (EV_A_ (W)w);
2422 3145
2423 EV_FREQUENT_CHECK; 3146 EV_FREQUENT_CHECK;
2424} 3147}
3148
3149#endif
2425 3150
2426#if EV_STAT_ENABLE 3151#if EV_STAT_ENABLE
2427 3152
2428# ifdef _WIN32 3153# ifdef _WIN32
2429# undef lstat 3154# undef lstat
2430# define lstat(a,b) _stati64 (a,b) 3155# define lstat(a,b) _stati64 (a,b)
2431# endif 3156# endif
2432 3157
2433#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 */
2434#define MIN_STAT_INTERVAL 0.1074891 3160#define MIN_STAT_INTERVAL 0.1074891
2435 3161
2436static 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);
2437 3163
2438#if EV_USE_INOTIFY 3164#if EV_USE_INOTIFY
2439# 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)
2440 3168
2441static void noinline 3169static void noinline
2442infy_add (EV_P_ ev_stat *w) 3170infy_add (EV_P_ ev_stat *w)
2443{ 3171{
2444 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);
2445 3173
2446 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 */
2447 { 3194 }
2448 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;
2449 3199
2450 /* monitor some parent directory for speedup hints */ 3200 /* if path is not there, monitor some parent directory for speedup hints */
2451 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3201 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2452 /* but an efficiency issue only */ 3202 /* but an efficiency issue only */
2453 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3203 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2454 { 3204 {
2455 char path [4096]; 3205 char path [4096];
2456 strcpy (path, w->path); 3206 strcpy (path, w->path);
… …
2460 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3210 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2461 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3211 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2462 3212
2463 char *pend = strrchr (path, '/'); 3213 char *pend = strrchr (path, '/');
2464 3214
2465 if (!pend) 3215 if (!pend || pend == path)
2466 break; /* whoops, no '/', complain to your admin */ 3216 break;
2467 3217
2468 *pend = 0; 3218 *pend = 0;
2469 w->wd = inotify_add_watch (fs_fd, path, mask); 3219 w->wd = inotify_add_watch (fs_fd, path, mask);
2470 } 3220 }
2471 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3221 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2472 } 3222 }
2473 } 3223 }
2474 else
2475 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2476 3224
2477 if (w->wd >= 0) 3225 if (w->wd >= 0)
2478 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);
2479} 3232}
2480 3233
2481static void noinline 3234static void noinline
2482infy_del (EV_P_ ev_stat *w) 3235infy_del (EV_P_ ev_stat *w)
2483{ 3236{
… …
2486 3239
2487 if (wd < 0) 3240 if (wd < 0)
2488 return; 3241 return;
2489 3242
2490 w->wd = -2; 3243 w->wd = -2;
2491 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3244 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2492 wlist_del (&fs_hash [slot].head, (WL)w); 3245 wlist_del (&fs_hash [slot].head, (WL)w);
2493 3246
2494 /* remove this watcher, if others are watching it, they will rearm */ 3247 /* remove this watcher, if others are watching it, they will rearm */
2495 inotify_rm_watch (fs_fd, wd); 3248 inotify_rm_watch (fs_fd, wd);
2496} 3249}
… …
2498static void noinline 3251static void noinline
2499infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3252infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2500{ 3253{
2501 if (slot < 0) 3254 if (slot < 0)
2502 /* overflow, need to check for all hash slots */ 3255 /* overflow, need to check for all hash slots */
2503 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3256 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2504 infy_wd (EV_A_ slot, wd, ev); 3257 infy_wd (EV_A_ slot, wd, ev);
2505 else 3258 else
2506 { 3259 {
2507 WL w_; 3260 WL w_;
2508 3261
2509 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3262 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2510 { 3263 {
2511 ev_stat *w = (ev_stat *)w_; 3264 ev_stat *w = (ev_stat *)w_;
2512 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 */
2513 3266
2514 if (w->wd == wd || wd == -1) 3267 if (w->wd == wd || wd == -1)
2515 { 3268 {
2516 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3269 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2517 { 3270 {
3271 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2518 w->wd = -1; 3272 w->wd = -1;
2519 infy_add (EV_A_ w); /* re-add, no matter what */ 3273 infy_add (EV_A_ w); /* re-add, no matter what */
2520 } 3274 }
2521 3275
2522 stat_timer_cb (EV_A_ &w->timer, 0); 3276 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2527 3281
2528static void 3282static void
2529infy_cb (EV_P_ ev_io *w, int revents) 3283infy_cb (EV_P_ ev_io *w, int revents)
2530{ 3284{
2531 char buf [EV_INOTIFY_BUFSIZE]; 3285 char buf [EV_INOTIFY_BUFSIZE];
2532 struct inotify_event *ev = (struct inotify_event *)buf;
2533 int ofs; 3286 int ofs;
2534 int len = read (fs_fd, buf, sizeof (buf)); 3287 int len = read (fs_fd, buf, sizeof (buf));
2535 3288
2536 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);
2537 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 }
2538} 3295}
2539 3296
2540void inline_size 3297inline_size void ecb_cold
2541infy_init (EV_P) 3298ev_check_2625 (EV_P)
2542{ 3299{
2543 if (fs_fd != -2)
2544 return;
2545
2546 /* kernels < 2.6.25 are borked 3300 /* kernels < 2.6.25 are borked
2547 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3301 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2548 */ 3302 */
2549 { 3303 if (ev_linux_version () < 0x020619)
2550 struct utsname buf; 3304 return;
2551 int major, minor, micro;
2552 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
3321infy_init (EV_P)
3322{
3323 if (fs_fd != -2)
3324 return;
3325
2553 fs_fd = -1; 3326 fs_fd = -1;
2554 3327
2555 if (uname (&buf)) 3328 ev_check_2625 (EV_A);
2556 return;
2557 3329
2558 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2559 return;
2560
2561 if (major < 2
2562 || (major == 2 && minor < 6)
2563 || (major == 2 && minor == 6 && micro < 25))
2564 return;
2565 }
2566
2567 fs_fd = inotify_init (); 3330 fs_fd = infy_newfd ();
2568 3331
2569 if (fs_fd >= 0) 3332 if (fs_fd >= 0)
2570 { 3333 {
3334 fd_intern (fs_fd);
2571 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3335 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2572 ev_set_priority (&fs_w, EV_MAXPRI); 3336 ev_set_priority (&fs_w, EV_MAXPRI);
2573 ev_io_start (EV_A_ &fs_w); 3337 ev_io_start (EV_A_ &fs_w);
3338 ev_unref (EV_A);
2574 } 3339 }
2575} 3340}
2576 3341
2577void inline_size 3342inline_size void
2578infy_fork (EV_P) 3343infy_fork (EV_P)
2579{ 3344{
2580 int slot; 3345 int slot;
2581 3346
2582 if (fs_fd < 0) 3347 if (fs_fd < 0)
2583 return; 3348 return;
2584 3349
3350 ev_ref (EV_A);
3351 ev_io_stop (EV_A_ &fs_w);
2585 close (fs_fd); 3352 close (fs_fd);
2586 fs_fd = inotify_init (); 3353 fs_fd = infy_newfd ();
2587 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
2588 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3363 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2589 { 3364 {
2590 WL w_ = fs_hash [slot].head; 3365 WL w_ = fs_hash [slot].head;
2591 fs_hash [slot].head = 0; 3366 fs_hash [slot].head = 0;
2592 3367
2593 while (w_) 3368 while (w_)
… …
2598 w->wd = -1; 3373 w->wd = -1;
2599 3374
2600 if (fs_fd >= 0) 3375 if (fs_fd >= 0)
2601 infy_add (EV_A_ w); /* re-add, no matter what */ 3376 infy_add (EV_A_ w); /* re-add, no matter what */
2602 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);
2603 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 }
2604 } 3384 }
2605 } 3385 }
2606} 3386}
2607 3387
2608#endif 3388#endif
… …
2625static void noinline 3405static void noinline
2626stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3406stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2627{ 3407{
2628 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3408 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2629 3409
2630 /* we copy this here each the time so that */ 3410 ev_statdata prev = w->attr;
2631 /* prev has the old value when the callback gets invoked */
2632 w->prev = w->attr;
2633 ev_stat_stat (EV_A_ w); 3411 ev_stat_stat (EV_A_ w);
2634 3412
2635 /* 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 */
2636 if ( 3414 if (
2637 w->prev.st_dev != w->attr.st_dev 3415 prev.st_dev != w->attr.st_dev
2638 || w->prev.st_ino != w->attr.st_ino 3416 || prev.st_ino != w->attr.st_ino
2639 || w->prev.st_mode != w->attr.st_mode 3417 || prev.st_mode != w->attr.st_mode
2640 || w->prev.st_nlink != w->attr.st_nlink 3418 || prev.st_nlink != w->attr.st_nlink
2641 || w->prev.st_uid != w->attr.st_uid 3419 || prev.st_uid != w->attr.st_uid
2642 || w->prev.st_gid != w->attr.st_gid 3420 || prev.st_gid != w->attr.st_gid
2643 || w->prev.st_rdev != w->attr.st_rdev 3421 || prev.st_rdev != w->attr.st_rdev
2644 || w->prev.st_size != w->attr.st_size 3422 || prev.st_size != w->attr.st_size
2645 || w->prev.st_atime != w->attr.st_atime 3423 || prev.st_atime != w->attr.st_atime
2646 || w->prev.st_mtime != w->attr.st_mtime 3424 || prev.st_mtime != w->attr.st_mtime
2647 || w->prev.st_ctime != w->attr.st_ctime 3425 || prev.st_ctime != w->attr.st_ctime
2648 ) { 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
2649 #if EV_USE_INOTIFY 3432 #if EV_USE_INOTIFY
2650 if (fs_fd >= 0) 3433 if (fs_fd >= 0)
2651 { 3434 {
2652 infy_del (EV_A_ w); 3435 infy_del (EV_A_ w);
2653 infy_add (EV_A_ w); 3436 infy_add (EV_A_ w);
… …
2663ev_stat_start (EV_P_ ev_stat *w) 3446ev_stat_start (EV_P_ ev_stat *w)
2664{ 3447{
2665 if (expect_false (ev_is_active (w))) 3448 if (expect_false (ev_is_active (w)))
2666 return; 3449 return;
2667 3450
2668 /* since we use memcmp, we need to clear any padding data etc. */
2669 memset (&w->prev, 0, sizeof (ev_statdata));
2670 memset (&w->attr, 0, sizeof (ev_statdata));
2671
2672 ev_stat_stat (EV_A_ w); 3451 ev_stat_stat (EV_A_ w);
2673 3452
3453 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2674 if (w->interval < MIN_STAT_INTERVAL) 3454 w->interval = MIN_STAT_INTERVAL;
2675 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2676 3455
2677 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);
2678 ev_set_priority (&w->timer, ev_priority (w)); 3457 ev_set_priority (&w->timer, ev_priority (w));
2679 3458
2680#if EV_USE_INOTIFY 3459#if EV_USE_INOTIFY
2681 infy_init (EV_A); 3460 infy_init (EV_A);
2682 3461
2683 if (fs_fd >= 0) 3462 if (fs_fd >= 0)
2684 infy_add (EV_A_ w); 3463 infy_add (EV_A_ w);
2685 else 3464 else
2686#endif 3465#endif
3466 {
2687 ev_timer_start (EV_A_ &w->timer); 3467 ev_timer_again (EV_A_ &w->timer);
3468 ev_unref (EV_A);
3469 }
2688 3470
2689 ev_start (EV_A_ (W)w, 1); 3471 ev_start (EV_A_ (W)w, 1);
2690 3472
2691 EV_FREQUENT_CHECK; 3473 EV_FREQUENT_CHECK;
2692} 3474}
… …
2701 EV_FREQUENT_CHECK; 3483 EV_FREQUENT_CHECK;
2702 3484
2703#if EV_USE_INOTIFY 3485#if EV_USE_INOTIFY
2704 infy_del (EV_A_ w); 3486 infy_del (EV_A_ w);
2705#endif 3487#endif
3488
3489 if (ev_is_active (&w->timer))
3490 {
3491 ev_ref (EV_A);
2706 ev_timer_stop (EV_A_ &w->timer); 3492 ev_timer_stop (EV_A_ &w->timer);
3493 }
2707 3494
2708 ev_stop (EV_A_ (W)w); 3495 ev_stop (EV_A_ (W)w);
2709 3496
2710 EV_FREQUENT_CHECK; 3497 EV_FREQUENT_CHECK;
2711} 3498}
… …
2756 3543
2757 EV_FREQUENT_CHECK; 3544 EV_FREQUENT_CHECK;
2758} 3545}
2759#endif 3546#endif
2760 3547
3548#if EV_PREPARE_ENABLE
2761void 3549void
2762ev_prepare_start (EV_P_ ev_prepare *w) 3550ev_prepare_start (EV_P_ ev_prepare *w)
2763{ 3551{
2764 if (expect_false (ev_is_active (w))) 3552 if (expect_false (ev_is_active (w)))
2765 return; 3553 return;
… …
2791 3579
2792 ev_stop (EV_A_ (W)w); 3580 ev_stop (EV_A_ (W)w);
2793 3581
2794 EV_FREQUENT_CHECK; 3582 EV_FREQUENT_CHECK;
2795} 3583}
3584#endif
2796 3585
3586#if EV_CHECK_ENABLE
2797void 3587void
2798ev_check_start (EV_P_ ev_check *w) 3588ev_check_start (EV_P_ ev_check *w)
2799{ 3589{
2800 if (expect_false (ev_is_active (w))) 3590 if (expect_false (ev_is_active (w)))
2801 return; 3591 return;
… …
2827 3617
2828 ev_stop (EV_A_ (W)w); 3618 ev_stop (EV_A_ (W)w);
2829 3619
2830 EV_FREQUENT_CHECK; 3620 EV_FREQUENT_CHECK;
2831} 3621}
3622#endif
2832 3623
2833#if EV_EMBED_ENABLE 3624#if EV_EMBED_ENABLE
2834void noinline 3625void noinline
2835ev_embed_sweep (EV_P_ ev_embed *w) 3626ev_embed_sweep (EV_P_ ev_embed *w)
2836{ 3627{
2837 ev_loop (w->other, EVLOOP_NONBLOCK); 3628 ev_run (w->other, EVRUN_NOWAIT);
2838} 3629}
2839 3630
2840static void 3631static void
2841embed_io_cb (EV_P_ ev_io *io, int revents) 3632embed_io_cb (EV_P_ ev_io *io, int revents)
2842{ 3633{
2843 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3634 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2844 3635
2845 if (ev_cb (w)) 3636 if (ev_cb (w))
2846 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3637 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2847 else 3638 else
2848 ev_loop (w->other, EVLOOP_NONBLOCK); 3639 ev_run (w->other, EVRUN_NOWAIT);
2849} 3640}
2850 3641
2851static void 3642static void
2852embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3643embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2853{ 3644{
2854 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3645 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2855 3646
2856 { 3647 {
2857 struct ev_loop *loop = w->other; 3648 EV_P = w->other;
2858 3649
2859 while (fdchangecnt) 3650 while (fdchangecnt)
2860 { 3651 {
2861 fd_reify (EV_A); 3652 fd_reify (EV_A);
2862 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3653 ev_run (EV_A_ EVRUN_NOWAIT);
2863 } 3654 }
2864 } 3655 }
2865} 3656}
2866 3657
2867static void 3658static void
2868embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3659embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2869{ 3660{
2870 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));
2871 3662
3663 ev_embed_stop (EV_A_ w);
3664
2872 { 3665 {
2873 struct ev_loop *loop = w->other; 3666 EV_P = w->other;
2874 3667
2875 ev_loop_fork (EV_A); 3668 ev_loop_fork (EV_A);
3669 ev_run (EV_A_ EVRUN_NOWAIT);
2876 } 3670 }
3671
3672 ev_embed_start (EV_A_ w);
2877} 3673}
2878 3674
2879#if 0 3675#if 0
2880static void 3676static void
2881embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3677embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2889{ 3685{
2890 if (expect_false (ev_is_active (w))) 3686 if (expect_false (ev_is_active (w)))
2891 return; 3687 return;
2892 3688
2893 { 3689 {
2894 struct ev_loop *loop = w->other; 3690 EV_P = w->other;
2895 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 ()));
2896 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);
2897 } 3693 }
2898 3694
2899 EV_FREQUENT_CHECK; 3695 EV_FREQUENT_CHECK;
2900 3696
… …
2926 3722
2927 ev_io_stop (EV_A_ &w->io); 3723 ev_io_stop (EV_A_ &w->io);
2928 ev_prepare_stop (EV_A_ &w->prepare); 3724 ev_prepare_stop (EV_A_ &w->prepare);
2929 ev_fork_stop (EV_A_ &w->fork); 3725 ev_fork_stop (EV_A_ &w->fork);
2930 3726
3727 ev_stop (EV_A_ (W)w);
3728
2931 EV_FREQUENT_CHECK; 3729 EV_FREQUENT_CHECK;
2932} 3730}
2933#endif 3731#endif
2934 3732
2935#if EV_FORK_ENABLE 3733#if EV_FORK_ENABLE
… …
2968 3766
2969 EV_FREQUENT_CHECK; 3767 EV_FREQUENT_CHECK;
2970} 3768}
2971#endif 3769#endif
2972 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
2973#if EV_ASYNC_ENABLE 3812#if EV_ASYNC_ENABLE
2974void 3813void
2975ev_async_start (EV_P_ ev_async *w) 3814ev_async_start (EV_P_ ev_async *w)
2976{ 3815{
2977 if (expect_false (ev_is_active (w))) 3816 if (expect_false (ev_is_active (w)))
2978 return; 3817 return;
2979 3818
3819 w->sent = 0;
3820
2980 evpipe_init (EV_A); 3821 evpipe_init (EV_A);
2981 3822
2982 EV_FREQUENT_CHECK; 3823 EV_FREQUENT_CHECK;
2983 3824
2984 ev_start (EV_A_ (W)w, ++asynccnt); 3825 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3011 3852
3012void 3853void
3013ev_async_send (EV_P_ ev_async *w) 3854ev_async_send (EV_P_ ev_async *w)
3014{ 3855{
3015 w->sent = 1; 3856 w->sent = 1;
3016 evpipe_write (EV_A_ &gotasync); 3857 evpipe_write (EV_A_ &async_pending);
3017} 3858}
3018#endif 3859#endif
3019 3860
3020/*****************************************************************************/ 3861/*****************************************************************************/
3021 3862
… …
3061{ 3902{
3062 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));
3063 3904
3064 if (expect_false (!once)) 3905 if (expect_false (!once))
3065 { 3906 {
3066 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3907 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3067 return; 3908 return;
3068 } 3909 }
3069 3910
3070 once->cb = cb; 3911 once->cb = cb;
3071 once->arg = arg; 3912 once->arg = arg;
… …
3083 ev_timer_set (&once->to, timeout, 0.); 3924 ev_timer_set (&once->to, timeout, 0.);
3084 ev_timer_start (EV_A_ &once->to); 3925 ev_timer_start (EV_A_ &once->to);
3085 } 3926 }
3086} 3927}
3087 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
3088#if EV_MULTIPLICITY 4045#if EV_MULTIPLICITY
3089 #include "ev_wrap.h" 4046 #include "ev_wrap.h"
3090#endif 4047#endif
3091 4048
3092#ifdef __cplusplus 4049EV_CPP(})
3093}
3094#endif
3095 4050

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