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Comparing libev/ev.c (file contents):
Revision 1.273 by root, Mon Nov 3 14:27:06 2008 UTC vs.
Revision 1.380 by root, Mon Jun 27 19:20:01 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>
292# include <sys/statfs.h> 397# include <sys/statfs.h>
293# include <sys/inotify.h> 398# include <sys/inotify.h>
294/* 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 */
295# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
296# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
… …
303#endif 408#endif
304 409
305#if EV_USE_EVENTFD 410#if EV_USE_EVENTFD
306/* 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 */
307# include <stdint.h> 412# include <stdint.h>
308# ifdef __cplusplus 413# ifndef EFD_NONBLOCK
309extern "C" { 414# define EFD_NONBLOCK O_NONBLOCK
310# endif 415# endif
311int eventfd (unsigned int initval, int flags); 416# ifndef EFD_CLOEXEC
312# ifdef __cplusplus 417# ifdef O_CLOEXEC
313} 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
314# 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};
315#endif 446#endif
316 447
317/**/ 448/**/
318 449
319#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
320# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
321#else 452#else
322# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
323#endif 454#endif
324 455
325/* 456/*
326 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
327 * It is added to ev_rt_now when scheduling periodics
328 * to ensure progress, time-wise, even when rounding
329 * errors are against us.
330 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
331 * Better solutions welcome.
332 */ 459 */
333#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 */
334 462
335#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) */
336#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) */
337/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
338 465
339#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)
340# 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)
341# 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
342#else 493#else
343# define expect(expr,value) (expr) 494 #define ecb_inline static
344# define noinline
345# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
346# define inline
347# endif 495#endif
348#endif
349 496
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. */
350#define expect_false(expr) expect ((expr) != 0, 0) 528#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
351#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
352#define inline_size static inline 536#define inline_size ecb_inline
353 537
354#if EV_MINIMAL 538#if EV_FEATURE_CODE
539# define inline_speed ecb_inline
540#else
355# 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)
356#else 548#else
357# define inline_speed static inline
358#endif
359
360#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
361#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 549# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
550#endif
362 551
363#define EMPTY /* required for microsofts broken pseudo-c compiler */ 552#define EMPTY /* required for microsofts broken pseudo-c compiler */
364#define EMPTY2(a,b) /* used to suppress some warnings */ 553#define EMPTY2(a,b) /* used to suppress some warnings */
365 554
366typedef ev_watcher *W; 555typedef ev_watcher *W;
… …
368typedef ev_watcher_time *WT; 557typedef ev_watcher_time *WT;
369 558
370#define ev_active(w) ((W)(w))->active 559#define ev_active(w) ((W)(w))->active
371#define ev_at(w) ((WT)(w))->at 560#define ev_at(w) ((WT)(w))->at
372 561
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
373#if EV_USE_MONOTONIC 568#if EV_USE_MONOTONIC
374/* sig_atomic_t is used to avoid per-thread variables or locking but still */
375/* giving it a reasonably high chance of working on typical architetcures */
376static 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)
377#endif 580#endif
378 581
379#ifdef _WIN32 582#ifdef _WIN32
380# include "ev_win32.c" 583# include "ev_win32.c"
381#endif 584#endif
382 585
383/*****************************************************************************/ 586/*****************************************************************************/
384 587
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
385static void (*syserr_cb)(const char *msg); 686static void (*syserr_cb)(const char *msg);
386 687
387void 688void ecb_cold
388ev_set_syserr_cb (void (*cb)(const char *msg)) 689ev_set_syserr_cb (void (*cb)(const char *msg))
389{ 690{
390 syserr_cb = cb; 691 syserr_cb = cb;
391} 692}
392 693
393static void noinline 694static void noinline ecb_cold
394ev_syserr (const char *msg) 695ev_syserr (const char *msg)
395{ 696{
396 if (!msg) 697 if (!msg)
397 msg = "(libev) system error"; 698 msg = "(libev) system error";
398 699
399 if (syserr_cb) 700 if (syserr_cb)
400 syserr_cb (msg); 701 syserr_cb (msg);
401 else 702 else
402 { 703 {
704#if EV_AVOID_STDIO
705 ev_printerr (msg);
706 ev_printerr (": ");
707 ev_printerr (strerror (errno));
708 ev_printerr ("\n");
709#else
403 perror (msg); 710 perror (msg);
711#endif
404 abort (); 712 abort ();
405 } 713 }
406} 714}
407 715
408static void * 716static void *
409ev_realloc_emul (void *ptr, long size) 717ev_realloc_emul (void *ptr, long size)
410{ 718{
719#if __GLIBC__
720 return realloc (ptr, size);
721#else
411 /* some systems, notably openbsd and darwin, fail to properly 722 /* some systems, notably openbsd and darwin, fail to properly
412 * 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
413 * the single unix specification, so work around them here. 724 * the single unix specification, so work around them here.
414 */ 725 */
415 726
416 if (size) 727 if (size)
417 return realloc (ptr, size); 728 return realloc (ptr, size);
418 729
419 free (ptr); 730 free (ptr);
420 return 0; 731 return 0;
732#endif
421} 733}
422 734
423static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 735static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
424 736
425void 737void ecb_cold
426ev_set_allocator (void *(*cb)(void *ptr, long size)) 738ev_set_allocator (void *(*cb)(void *ptr, long size))
427{ 739{
428 alloc = cb; 740 alloc = cb;
429} 741}
430 742
… …
433{ 745{
434 ptr = alloc (ptr, size); 746 ptr = alloc (ptr, size);
435 747
436 if (!ptr && size) 748 if (!ptr && size)
437 { 749 {
750#if EV_AVOID_STDIO
751 ev_printerr ("(libev) memory allocation failed, aborting.\n");
752#else
438 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 753 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
754#endif
439 abort (); 755 abort ();
440 } 756 }
441 757
442 return ptr; 758 return ptr;
443} 759}
… …
445#define ev_malloc(size) ev_realloc (0, (size)) 761#define ev_malloc(size) ev_realloc (0, (size))
446#define ev_free(ptr) ev_realloc ((ptr), 0) 762#define ev_free(ptr) ev_realloc ((ptr), 0)
447 763
448/*****************************************************************************/ 764/*****************************************************************************/
449 765
766/* set in reify when reification needed */
767#define EV_ANFD_REIFY 1
768
769/* file descriptor info structure */
450typedef struct 770typedef struct
451{ 771{
452 WL head; 772 WL head;
453 unsigned char events; 773 unsigned char events; /* the events watched for */
454 unsigned char reify; 774 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
455 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 775 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
456 unsigned char unused; 776 unsigned char unused;
457#if EV_USE_EPOLL 777#if EV_USE_EPOLL
458 unsigned int egen; /* generation counter to counter epoll bugs */ 778 unsigned int egen; /* generation counter to counter epoll bugs */
459#endif 779#endif
460#if EV_SELECT_IS_WINSOCKET 780#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
461 SOCKET handle; 781 SOCKET handle;
462#endif 782#endif
783#if EV_USE_IOCP
784 OVERLAPPED or, ow;
785#endif
463} ANFD; 786} ANFD;
464 787
788/* stores the pending event set for a given watcher */
465typedef struct 789typedef struct
466{ 790{
467 W w; 791 W w;
468 int events; 792 int events; /* the pending event set for the given watcher */
469} ANPENDING; 793} ANPENDING;
470 794
471#if EV_USE_INOTIFY 795#if EV_USE_INOTIFY
472/* hash table entry per inotify-id */ 796/* hash table entry per inotify-id */
473typedef struct 797typedef struct
… …
476} ANFS; 800} ANFS;
477#endif 801#endif
478 802
479/* Heap Entry */ 803/* Heap Entry */
480#if EV_HEAP_CACHE_AT 804#if EV_HEAP_CACHE_AT
805 /* a heap element */
481 typedef struct { 806 typedef struct {
482 ev_tstamp at; 807 ev_tstamp at;
483 WT w; 808 WT w;
484 } ANHE; 809 } ANHE;
485 810
486 #define ANHE_w(he) (he).w /* access watcher, read-write */ 811 #define ANHE_w(he) (he).w /* access watcher, read-write */
487 #define ANHE_at(he) (he).at /* access cached at, read-only */ 812 #define ANHE_at(he) (he).at /* access cached at, read-only */
488 #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 */
489#else 814#else
815 /* a heap element */
490 typedef WT ANHE; 816 typedef WT ANHE;
491 817
492 #define ANHE_w(he) (he) 818 #define ANHE_w(he) (he)
493 #define ANHE_at(he) (he)->at 819 #define ANHE_at(he) (he)->at
494 #define ANHE_at_cache(he) 820 #define ANHE_at_cache(he)
… …
518 844
519 static int ev_default_loop_ptr; 845 static int ev_default_loop_ptr;
520 846
521#endif 847#endif
522 848
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
523/*****************************************************************************/ 861/*****************************************************************************/
524 862
863#ifndef EV_HAVE_EV_TIME
525ev_tstamp 864ev_tstamp
526ev_time (void) 865ev_time (void)
527{ 866{
528#if EV_USE_REALTIME 867#if EV_USE_REALTIME
868 if (expect_true (have_realtime))
869 {
529 struct timespec ts; 870 struct timespec ts;
530 clock_gettime (CLOCK_REALTIME, &ts); 871 clock_gettime (CLOCK_REALTIME, &ts);
531 return ts.tv_sec + ts.tv_nsec * 1e-9; 872 return ts.tv_sec + ts.tv_nsec * 1e-9;
532#else 873 }
874#endif
875
533 struct timeval tv; 876 struct timeval tv;
534 gettimeofday (&tv, 0); 877 gettimeofday (&tv, 0);
535 return tv.tv_sec + tv.tv_usec * 1e-6; 878 return tv.tv_sec + tv.tv_usec * 1e-6;
536#endif
537} 879}
880#endif
538 881
539ev_tstamp inline_size 882inline_size ev_tstamp
540get_clock (void) 883get_clock (void)
541{ 884{
542#if EV_USE_MONOTONIC 885#if EV_USE_MONOTONIC
543 if (expect_true (have_monotonic)) 886 if (expect_true (have_monotonic))
544 { 887 {
… …
565 if (delay > 0.) 908 if (delay > 0.)
566 { 909 {
567#if EV_USE_NANOSLEEP 910#if EV_USE_NANOSLEEP
568 struct timespec ts; 911 struct timespec ts;
569 912
570 ts.tv_sec = (time_t)delay; 913 EV_TS_SET (ts, delay);
571 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
572
573 nanosleep (&ts, 0); 914 nanosleep (&ts, 0);
574#elif defined(_WIN32) 915#elif defined(_WIN32)
575 Sleep ((unsigned long)(delay * 1e3)); 916 Sleep ((unsigned long)(delay * 1e3));
576#else 917#else
577 struct timeval tv; 918 struct timeval tv;
578 919
579 tv.tv_sec = (time_t)delay;
580 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
581
582 /* 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 */
583 /* somehting nto guaranteed by newer posix versions, but guaranteed */ 921 /* something not guaranteed by newer posix versions, but guaranteed */
584 /* by older ones */ 922 /* by older ones */
923 EV_TV_SET (tv, delay);
585 select (0, 0, 0, 0, &tv); 924 select (0, 0, 0, 0, &tv);
586#endif 925#endif
587 } 926 }
588} 927}
589 928
590/*****************************************************************************/ 929/*****************************************************************************/
591 930
592#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 */
593 932
594int 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
595array_nextsize (int elem, int cur, int cnt) 936array_nextsize (int elem, int cur, int cnt)
596{ 937{
597 int ncur = cur + 1; 938 int ncur = cur + 1;
598 939
599 do 940 do
… …
610 } 951 }
611 952
612 return ncur; 953 return ncur;
613} 954}
614 955
615static noinline void * 956static void * noinline ecb_cold
616array_realloc (int elem, void *base, int *cur, int cnt) 957array_realloc (int elem, void *base, int *cur, int cnt)
617{ 958{
618 *cur = array_nextsize (elem, *cur, cnt); 959 *cur = array_nextsize (elem, *cur, cnt);
619 return ev_realloc (base, elem * *cur); 960 return ev_realloc (base, elem * *cur);
620} 961}
… …
640 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 981 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
641 } 982 }
642#endif 983#endif
643 984
644#define array_free(stem, idx) \ 985#define array_free(stem, idx) \
645 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
646 987
647/*****************************************************************************/ 988/*****************************************************************************/
989
990/* dummy callback for pending events */
991static void noinline
992pendingcb (EV_P_ ev_prepare *w, int revents)
993{
994}
648 995
649void noinline 996void noinline
650ev_feed_event (EV_P_ void *w, int revents) 997ev_feed_event (EV_P_ void *w, int revents)
651{ 998{
652 W w_ = (W)w; 999 W w_ = (W)w;
… …
661 pendings [pri][w_->pending - 1].w = w_; 1008 pendings [pri][w_->pending - 1].w = w_;
662 pendings [pri][w_->pending - 1].events = revents; 1009 pendings [pri][w_->pending - 1].events = revents;
663 } 1010 }
664} 1011}
665 1012
666void 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
667queue_events (EV_P_ W *events, int eventcnt, int type) 1029queue_events (EV_P_ W *events, int eventcnt, int type)
668{ 1030{
669 int i; 1031 int i;
670 1032
671 for (i = 0; i < eventcnt; ++i) 1033 for (i = 0; i < eventcnt; ++i)
672 ev_feed_event (EV_A_ events [i], type); 1034 ev_feed_event (EV_A_ events [i], type);
673} 1035}
674 1036
675/*****************************************************************************/ 1037/*****************************************************************************/
676 1038
677void inline_speed 1039inline_speed void
678fd_event (EV_P_ int fd, int revents) 1040fd_event_nocheck (EV_P_ int fd, int revents)
679{ 1041{
680 ANFD *anfd = anfds + fd; 1042 ANFD *anfd = anfds + fd;
681 ev_io *w; 1043 ev_io *w;
682 1044
683 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)
… …
687 if (ev) 1049 if (ev)
688 ev_feed_event (EV_A_ (W)w, ev); 1050 ev_feed_event (EV_A_ (W)w, ev);
689 } 1051 }
690} 1052}
691 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
692void 1065void
693ev_feed_fd_event (EV_P_ int fd, int revents) 1066ev_feed_fd_event (EV_P_ int fd, int revents)
694{ 1067{
695 if (fd >= 0 && fd < anfdmax) 1068 if (fd >= 0 && fd < anfdmax)
696 fd_event (EV_A_ fd, revents); 1069 fd_event_nocheck (EV_A_ fd, revents);
697} 1070}
698 1071
699void inline_size 1072/* make sure the external fd watch events are in-sync */
1073/* with the kernel/libev internal state */
1074inline_size void
700fd_reify (EV_P) 1075fd_reify (EV_P)
701{ 1076{
702 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
703 1103
704 for (i = 0; i < fdchangecnt; ++i) 1104 for (i = 0; i < fdchangecnt; ++i)
705 { 1105 {
706 int fd = fdchanges [i]; 1106 int fd = fdchanges [i];
707 ANFD *anfd = anfds + fd; 1107 ANFD *anfd = anfds + fd;
708 ev_io *w; 1108 ev_io *w;
709 1109
710 unsigned char events = 0; 1110 unsigned char o_events = anfd->events;
1111 unsigned char o_reify = anfd->reify;
711 1112
712 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1113 anfd->reify = 0;
713 events |= (unsigned char)w->events;
714 1114
715#if EV_SELECT_IS_WINSOCKET 1115 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
716 if (events)
717 { 1116 {
718 unsigned long arg; 1117 anfd->events = 0;
719 #ifdef EV_FD_TO_WIN32_HANDLE 1118
720 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1119 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
721 #else 1120 anfd->events |= (unsigned char)w->events;
722 anfd->handle = _get_osfhandle (fd); 1121
723 #endif 1122 if (o_events != anfd->events)
724 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1123 o_reify = EV__IOFDSET; /* actually |= */
725 } 1124 }
726#endif
727 1125
728 { 1126 if (o_reify & EV__IOFDSET)
729 unsigned char o_events = anfd->events;
730 unsigned char o_reify = anfd->reify;
731
732 anfd->reify = 0;
733 anfd->events = events;
734
735 if (o_events != events || o_reify & EV_IOFDSET)
736 backend_modify (EV_A_ fd, o_events, events); 1127 backend_modify (EV_A_ fd, o_events, anfd->events);
737 }
738 } 1128 }
739 1129
740 fdchangecnt = 0; 1130 fdchangecnt = 0;
741} 1131}
742 1132
743void inline_size 1133/* something about the given fd changed */
1134inline_size void
744fd_change (EV_P_ int fd, int flags) 1135fd_change (EV_P_ int fd, int flags)
745{ 1136{
746 unsigned char reify = anfds [fd].reify; 1137 unsigned char reify = anfds [fd].reify;
747 anfds [fd].reify |= flags; 1138 anfds [fd].reify |= flags;
748 1139
… …
752 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1143 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
753 fdchanges [fdchangecnt - 1] = fd; 1144 fdchanges [fdchangecnt - 1] = fd;
754 } 1145 }
755} 1146}
756 1147
757void inline_speed 1148/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1149inline_speed void ecb_cold
758fd_kill (EV_P_ int fd) 1150fd_kill (EV_P_ int fd)
759{ 1151{
760 ev_io *w; 1152 ev_io *w;
761 1153
762 while ((w = (ev_io *)anfds [fd].head)) 1154 while ((w = (ev_io *)anfds [fd].head))
… …
764 ev_io_stop (EV_A_ w); 1156 ev_io_stop (EV_A_ w);
765 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);
766 } 1158 }
767} 1159}
768 1160
769int inline_size 1161/* check whether the given fd is actually valid, for error recovery */
1162inline_size int ecb_cold
770fd_valid (int fd) 1163fd_valid (int fd)
771{ 1164{
772#ifdef _WIN32 1165#ifdef _WIN32
773 return _get_osfhandle (fd) != -1; 1166 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
774#else 1167#else
775 return fcntl (fd, F_GETFD) != -1; 1168 return fcntl (fd, F_GETFD) != -1;
776#endif 1169#endif
777} 1170}
778 1171
779/* called on EBADF to verify fds */ 1172/* called on EBADF to verify fds */
780static void noinline 1173static void noinline ecb_cold
781fd_ebadf (EV_P) 1174fd_ebadf (EV_P)
782{ 1175{
783 int fd; 1176 int fd;
784 1177
785 for (fd = 0; fd < anfdmax; ++fd) 1178 for (fd = 0; fd < anfdmax; ++fd)
… …
787 if (!fd_valid (fd) && errno == EBADF) 1180 if (!fd_valid (fd) && errno == EBADF)
788 fd_kill (EV_A_ fd); 1181 fd_kill (EV_A_ fd);
789} 1182}
790 1183
791/* 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 */
792static void noinline 1185static void noinline ecb_cold
793fd_enomem (EV_P) 1186fd_enomem (EV_P)
794{ 1187{
795 int fd; 1188 int fd;
796 1189
797 for (fd = anfdmax; fd--; ) 1190 for (fd = anfdmax; fd--; )
798 if (anfds [fd].events) 1191 if (anfds [fd].events)
799 { 1192 {
800 fd_kill (EV_A_ fd); 1193 fd_kill (EV_A_ fd);
801 return; 1194 break;
802 } 1195 }
803} 1196}
804 1197
805/* 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 */
806static void noinline 1199static void noinline
… …
811 for (fd = 0; fd < anfdmax; ++fd) 1204 for (fd = 0; fd < anfdmax; ++fd)
812 if (anfds [fd].events) 1205 if (anfds [fd].events)
813 { 1206 {
814 anfds [fd].events = 0; 1207 anfds [fd].events = 0;
815 anfds [fd].emask = 0; 1208 anfds [fd].emask = 0;
816 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1209 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
817 } 1210 }
818} 1211}
819 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
820/*****************************************************************************/ 1227/*****************************************************************************/
821 1228
822/* 1229/*
823 * 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
824 * 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
825 * the branching factor of the d-tree. 1232 * the branching factor of the d-tree.
826 */ 1233 */
827 1234
828/* 1235/*
… …
837#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1244#define HEAP0 (DHEAP - 1) /* index of first element in heap */
838#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1245#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
839#define UPHEAP_DONE(p,k) ((p) == (k)) 1246#define UPHEAP_DONE(p,k) ((p) == (k))
840 1247
841/* away from the root */ 1248/* away from the root */
842void inline_speed 1249inline_speed void
843downheap (ANHE *heap, int N, int k) 1250downheap (ANHE *heap, int N, int k)
844{ 1251{
845 ANHE he = heap [k]; 1252 ANHE he = heap [k];
846 ANHE *E = heap + N + HEAP0; 1253 ANHE *E = heap + N + HEAP0;
847 1254
… …
887#define HEAP0 1 1294#define HEAP0 1
888#define HPARENT(k) ((k) >> 1) 1295#define HPARENT(k) ((k) >> 1)
889#define UPHEAP_DONE(p,k) (!(p)) 1296#define UPHEAP_DONE(p,k) (!(p))
890 1297
891/* away from the root */ 1298/* away from the root */
892void inline_speed 1299inline_speed void
893downheap (ANHE *heap, int N, int k) 1300downheap (ANHE *heap, int N, int k)
894{ 1301{
895 ANHE he = heap [k]; 1302 ANHE he = heap [k];
896 1303
897 for (;;) 1304 for (;;)
898 { 1305 {
899 int c = k << 1; 1306 int c = k << 1;
900 1307
901 if (c > N + HEAP0 - 1) 1308 if (c >= N + HEAP0)
902 break; 1309 break;
903 1310
904 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])
905 ? 1 : 0; 1312 ? 1 : 0;
906 1313
… …
917 ev_active (ANHE_w (he)) = k; 1324 ev_active (ANHE_w (he)) = k;
918} 1325}
919#endif 1326#endif
920 1327
921/* towards the root */ 1328/* towards the root */
922void inline_speed 1329inline_speed void
923upheap (ANHE *heap, int k) 1330upheap (ANHE *heap, int k)
924{ 1331{
925 ANHE he = heap [k]; 1332 ANHE he = heap [k];
926 1333
927 for (;;) 1334 for (;;)
… …
938 1345
939 heap [k] = he; 1346 heap [k] = he;
940 ev_active (ANHE_w (he)) = k; 1347 ev_active (ANHE_w (he)) = k;
941} 1348}
942 1349
943void inline_size 1350/* move an element suitably so it is in a correct place */
1351inline_size void
944adjustheap (ANHE *heap, int N, int k) 1352adjustheap (ANHE *heap, int N, int k)
945{ 1353{
946 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)]))
947 upheap (heap, k); 1355 upheap (heap, k);
948 else 1356 else
949 downheap (heap, N, k); 1357 downheap (heap, N, k);
950} 1358}
951 1359
952/* 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 */
953void inline_size 1361inline_size void
954reheap (ANHE *heap, int N) 1362reheap (ANHE *heap, int N)
955{ 1363{
956 int i; 1364 int i;
957 1365
958 /* 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 */
… …
961 upheap (heap, i + HEAP0); 1369 upheap (heap, i + HEAP0);
962} 1370}
963 1371
964/*****************************************************************************/ 1372/*****************************************************************************/
965 1373
1374/* associate signal watchers to a signal signal */
966typedef struct 1375typedef struct
967{ 1376{
1377 EV_ATOMIC_T pending;
1378#if EV_MULTIPLICITY
1379 EV_P;
1380#endif
968 WL head; 1381 WL head;
969 EV_ATOMIC_T gotsig;
970} ANSIG; 1382} ANSIG;
971 1383
972static ANSIG *signals; 1384static ANSIG signals [EV_NSIG - 1];
973static int signalmax;
974
975static EV_ATOMIC_T gotsig;
976 1385
977/*****************************************************************************/ 1386/*****************************************************************************/
978 1387
979void inline_speed 1388#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
980fd_intern (int fd)
981{
982#ifdef _WIN32
983 unsigned long arg = 1;
984 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
985#else
986 fcntl (fd, F_SETFD, FD_CLOEXEC);
987 fcntl (fd, F_SETFL, O_NONBLOCK);
988#endif
989}
990 1389
991static void noinline 1390static void noinline ecb_cold
992evpipe_init (EV_P) 1391evpipe_init (EV_P)
993{ 1392{
994 if (!ev_is_active (&pipeev)) 1393 if (!ev_is_active (&pipe_w))
995 { 1394 {
996#if EV_USE_EVENTFD 1395# if EV_USE_EVENTFD
1396 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1397 if (evfd < 0 && errno == EINVAL)
997 if ((evfd = eventfd (0, 0)) >= 0) 1398 evfd = eventfd (0, 0);
1399
1400 if (evfd >= 0)
998 { 1401 {
999 evpipe [0] = -1; 1402 evpipe [0] = -1;
1000 fd_intern (evfd); 1403 fd_intern (evfd); /* doing it twice doesn't hurt */
1001 ev_io_set (&pipeev, evfd, EV_READ); 1404 ev_io_set (&pipe_w, evfd, EV_READ);
1002 } 1405 }
1003 else 1406 else
1004#endif 1407# endif
1005 { 1408 {
1006 while (pipe (evpipe)) 1409 while (pipe (evpipe))
1007 ev_syserr ("(libev) error creating signal/async pipe"); 1410 ev_syserr ("(libev) error creating signal/async pipe");
1008 1411
1009 fd_intern (evpipe [0]); 1412 fd_intern (evpipe [0]);
1010 fd_intern (evpipe [1]); 1413 fd_intern (evpipe [1]);
1011 ev_io_set (&pipeev, evpipe [0], EV_READ); 1414 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1012 } 1415 }
1013 1416
1014 ev_io_start (EV_A_ &pipeev); 1417 ev_io_start (EV_A_ &pipe_w);
1015 ev_unref (EV_A); /* watcher should not keep loop alive */ 1418 ev_unref (EV_A); /* watcher should not keep loop alive */
1016 } 1419 }
1017} 1420}
1018 1421
1019void inline_size 1422inline_speed void
1020evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1423evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1021{ 1424{
1022 if (!*flag) 1425 if (!*flag)
1023 { 1426 {
1024 int old_errno = errno; /* save errno because write might clobber it */
1025
1026 *flag = 1; 1427 *flag = 1;
1027 1428
1429 pipe_write_skipped = 1;
1430
1431 if (pipe_write_wanted)
1432 {
1433 int old_errno;
1434
1435 pipe_write_skipped = 0;
1436
1437 old_errno = errno; /* save errno because write will clobber it */
1438
1439#if EV_USE_EVENTFD
1440 if (evfd >= 0)
1441 {
1442 uint64_t counter = 1;
1443 write (evfd, &counter, sizeof (uint64_t));
1444 }
1445 else
1446#endif
1447 {
1448 /* win32 people keep sending patches that change this write() to send() */
1449 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1450 /* so when you think this write should be a send instead, please find out */
1451 /* where your send() is from - it's definitely not the microsoft send, and */
1452 /* tell me. thank you. */
1453 write (evpipe [1], &(evpipe [1]), 1);
1454 }
1455
1456 errno = old_errno;
1457 }
1458 }
1459}
1460
1461/* called whenever the libev signal pipe */
1462/* got some events (signal, async) */
1463static void
1464pipecb (EV_P_ ev_io *iow, int revents)
1465{
1466 int i;
1467
1468 if (revents & EV_READ)
1469 {
1028#if EV_USE_EVENTFD 1470#if EV_USE_EVENTFD
1029 if (evfd >= 0) 1471 if (evfd >= 0)
1030 { 1472 {
1031 uint64_t counter = 1; 1473 uint64_t counter;
1032 write (evfd, &counter, sizeof (uint64_t)); 1474 read (evfd, &counter, sizeof (uint64_t));
1033 } 1475 }
1034 else 1476 else
1035#endif 1477#endif
1036 write (evpipe [1], &old_errno, 1); 1478 {
1037
1038 errno = old_errno;
1039 }
1040}
1041
1042static void
1043pipecb (EV_P_ ev_io *iow, int revents)
1044{
1045#if EV_USE_EVENTFD
1046 if (evfd >= 0)
1047 {
1048 uint64_t counter;
1049 read (evfd, &counter, sizeof (uint64_t));
1050 }
1051 else
1052#endif
1053 {
1054 char dummy; 1479 char dummy;
1480 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1055 read (evpipe [0], &dummy, 1); 1481 read (evpipe [0], &dummy, 1);
1482 }
1483 }
1484
1485 pipe_write_skipped = 0;
1486
1487#if EV_SIGNAL_ENABLE
1488 if (sig_pending)
1056 } 1489 {
1490 sig_pending = 0;
1057 1491
1058 if (gotsig && ev_is_default_loop (EV_A)) 1492 for (i = EV_NSIG - 1; i--; )
1059 { 1493 if (expect_false (signals [i].pending))
1060 int signum;
1061 gotsig = 0;
1062
1063 for (signum = signalmax; signum--; )
1064 if (signals [signum].gotsig)
1065 ev_feed_signal_event (EV_A_ signum + 1); 1494 ev_feed_signal_event (EV_A_ i + 1);
1066 } 1495 }
1496#endif
1067 1497
1068#if EV_ASYNC_ENABLE 1498#if EV_ASYNC_ENABLE
1069 if (gotasync) 1499 if (async_pending)
1070 { 1500 {
1071 int i; 1501 async_pending = 0;
1072 gotasync = 0;
1073 1502
1074 for (i = asynccnt; i--; ) 1503 for (i = asynccnt; i--; )
1075 if (asyncs [i]->sent) 1504 if (asyncs [i]->sent)
1076 { 1505 {
1077 asyncs [i]->sent = 0; 1506 asyncs [i]->sent = 0;
… …
1081#endif 1510#endif
1082} 1511}
1083 1512
1084/*****************************************************************************/ 1513/*****************************************************************************/
1085 1514
1515void
1516ev_feed_signal (int signum)
1517{
1518#if EV_MULTIPLICITY
1519 EV_P = signals [signum - 1].loop;
1520
1521 if (!EV_A)
1522 return;
1523#endif
1524
1525 evpipe_init (EV_A);
1526
1527 signals [signum - 1].pending = 1;
1528 evpipe_write (EV_A_ &sig_pending);
1529}
1530
1086static void 1531static void
1087ev_sighandler (int signum) 1532ev_sighandler (int signum)
1088{ 1533{
1089#if EV_MULTIPLICITY
1090 struct ev_loop *loop = &default_loop_struct;
1091#endif
1092
1093#if _WIN32 1534#ifdef _WIN32
1094 signal (signum, ev_sighandler); 1535 signal (signum, ev_sighandler);
1095#endif 1536#endif
1096 1537
1097 signals [signum - 1].gotsig = 1; 1538 ev_feed_signal (signum);
1098 evpipe_write (EV_A_ &gotsig);
1099} 1539}
1100 1540
1101void noinline 1541void noinline
1102ev_feed_signal_event (EV_P_ int signum) 1542ev_feed_signal_event (EV_P_ int signum)
1103{ 1543{
1104 WL w; 1544 WL w;
1105 1545
1546 if (expect_false (signum <= 0 || signum > EV_NSIG))
1547 return;
1548
1549 --signum;
1550
1106#if EV_MULTIPLICITY 1551#if EV_MULTIPLICITY
1107 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1552 /* it is permissible to try to feed a signal to the wrong loop */
1108#endif 1553 /* or, likely more useful, feeding a signal nobody is waiting for */
1109 1554
1110 --signum; 1555 if (expect_false (signals [signum].loop != EV_A))
1111
1112 if (signum < 0 || signum >= signalmax)
1113 return; 1556 return;
1557#endif
1114 1558
1115 signals [signum].gotsig = 0; 1559 signals [signum].pending = 0;
1116 1560
1117 for (w = signals [signum].head; w; w = w->next) 1561 for (w = signals [signum].head; w; w = w->next)
1118 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1562 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1119} 1563}
1120 1564
1565#if EV_USE_SIGNALFD
1566static void
1567sigfdcb (EV_P_ ev_io *iow, int revents)
1568{
1569 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1570
1571 for (;;)
1572 {
1573 ssize_t res = read (sigfd, si, sizeof (si));
1574
1575 /* not ISO-C, as res might be -1, but works with SuS */
1576 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1577 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1578
1579 if (res < (ssize_t)sizeof (si))
1580 break;
1581 }
1582}
1583#endif
1584
1585#endif
1586
1121/*****************************************************************************/ 1587/*****************************************************************************/
1122 1588
1589#if EV_CHILD_ENABLE
1123static WL childs [EV_PID_HASHSIZE]; 1590static WL childs [EV_PID_HASHSIZE];
1124
1125#ifndef _WIN32
1126 1591
1127static ev_signal childev; 1592static ev_signal childev;
1128 1593
1129#ifndef WIFCONTINUED 1594#ifndef WIFCONTINUED
1130# define WIFCONTINUED(status) 0 1595# define WIFCONTINUED(status) 0
1131#endif 1596#endif
1132 1597
1133void inline_speed 1598/* handle a single child status event */
1599inline_speed void
1134child_reap (EV_P_ int chain, int pid, int status) 1600child_reap (EV_P_ int chain, int pid, int status)
1135{ 1601{
1136 ev_child *w; 1602 ev_child *w;
1137 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1603 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1138 1604
1139 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1605 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1140 { 1606 {
1141 if ((w->pid == pid || !w->pid) 1607 if ((w->pid == pid || !w->pid)
1142 && (!traced || (w->flags & 1))) 1608 && (!traced || (w->flags & 1)))
1143 { 1609 {
1144 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1610 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1151 1617
1152#ifndef WCONTINUED 1618#ifndef WCONTINUED
1153# define WCONTINUED 0 1619# define WCONTINUED 0
1154#endif 1620#endif
1155 1621
1622/* called on sigchld etc., calls waitpid */
1156static void 1623static void
1157childcb (EV_P_ ev_signal *sw, int revents) 1624childcb (EV_P_ ev_signal *sw, int revents)
1158{ 1625{
1159 int pid, status; 1626 int pid, status;
1160 1627
… …
1168 /* make sure we are called again until all children have been reaped */ 1635 /* make sure we are called again until all children have been reaped */
1169 /* we need to do it this way so that the callback gets called before we continue */ 1636 /* we need to do it this way so that the callback gets called before we continue */
1170 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1637 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1171 1638
1172 child_reap (EV_A_ pid, pid, status); 1639 child_reap (EV_A_ pid, pid, status);
1173 if (EV_PID_HASHSIZE > 1) 1640 if ((EV_PID_HASHSIZE) > 1)
1174 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1641 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1175} 1642}
1176 1643
1177#endif 1644#endif
1178 1645
1179/*****************************************************************************/ 1646/*****************************************************************************/
1180 1647
1648#if EV_USE_IOCP
1649# include "ev_iocp.c"
1650#endif
1181#if EV_USE_PORT 1651#if EV_USE_PORT
1182# include "ev_port.c" 1652# include "ev_port.c"
1183#endif 1653#endif
1184#if EV_USE_KQUEUE 1654#if EV_USE_KQUEUE
1185# include "ev_kqueue.c" 1655# include "ev_kqueue.c"
… …
1192#endif 1662#endif
1193#if EV_USE_SELECT 1663#if EV_USE_SELECT
1194# include "ev_select.c" 1664# include "ev_select.c"
1195#endif 1665#endif
1196 1666
1197int 1667int ecb_cold
1198ev_version_major (void) 1668ev_version_major (void)
1199{ 1669{
1200 return EV_VERSION_MAJOR; 1670 return EV_VERSION_MAJOR;
1201} 1671}
1202 1672
1203int 1673int ecb_cold
1204ev_version_minor (void) 1674ev_version_minor (void)
1205{ 1675{
1206 return EV_VERSION_MINOR; 1676 return EV_VERSION_MINOR;
1207} 1677}
1208 1678
1209/* return true if we are running with elevated privileges and should ignore env variables */ 1679/* return true if we are running with elevated privileges and should ignore env variables */
1210int inline_size 1680int inline_size ecb_cold
1211enable_secure (void) 1681enable_secure (void)
1212{ 1682{
1213#ifdef _WIN32 1683#ifdef _WIN32
1214 return 0; 1684 return 0;
1215#else 1685#else
1216 return getuid () != geteuid () 1686 return getuid () != geteuid ()
1217 || getgid () != getegid (); 1687 || getgid () != getegid ();
1218#endif 1688#endif
1219} 1689}
1220 1690
1221unsigned int 1691unsigned int ecb_cold
1222ev_supported_backends (void) 1692ev_supported_backends (void)
1223{ 1693{
1224 unsigned int flags = 0; 1694 unsigned int flags = 0;
1225 1695
1226 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1696 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1230 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1700 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1231 1701
1232 return flags; 1702 return flags;
1233} 1703}
1234 1704
1235unsigned int 1705unsigned int ecb_cold
1236ev_recommended_backends (void) 1706ev_recommended_backends (void)
1237{ 1707{
1238 unsigned int flags = ev_supported_backends (); 1708 unsigned int flags = ev_supported_backends ();
1239 1709
1240#ifndef __NetBSD__ 1710#ifndef __NetBSD__
1241 /* kqueue is borked on everything but netbsd apparently */ 1711 /* kqueue is borked on everything but netbsd apparently */
1242 /* it usually doesn't work correctly on anything but sockets and pipes */ 1712 /* it usually doesn't work correctly on anything but sockets and pipes */
1243 flags &= ~EVBACKEND_KQUEUE; 1713 flags &= ~EVBACKEND_KQUEUE;
1244#endif 1714#endif
1245#ifdef __APPLE__ 1715#ifdef __APPLE__
1246 // flags &= ~EVBACKEND_KQUEUE; for documentation 1716 /* only select works correctly on that "unix-certified" platform */
1247 flags &= ~EVBACKEND_POLL; 1717 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1718 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1719#endif
1720#ifdef __FreeBSD__
1721 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1248#endif 1722#endif
1249 1723
1250 return flags; 1724 return flags;
1251} 1725}
1252 1726
1253unsigned int 1727unsigned int ecb_cold
1254ev_embeddable_backends (void) 1728ev_embeddable_backends (void)
1255{ 1729{
1256 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1730 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1257 1731
1258 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1732 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1259 /* please fix it and tell me how to detect the fix */ 1733 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1260 flags &= ~EVBACKEND_EPOLL; 1734 flags &= ~EVBACKEND_EPOLL;
1261 1735
1262 return flags; 1736 return flags;
1263} 1737}
1264 1738
1265unsigned int 1739unsigned int
1266ev_backend (EV_P) 1740ev_backend (EV_P)
1267{ 1741{
1268 return backend; 1742 return backend;
1269} 1743}
1270 1744
1745#if EV_FEATURE_API
1271unsigned int 1746unsigned int
1272ev_loop_count (EV_P) 1747ev_iteration (EV_P)
1273{ 1748{
1274 return loop_count; 1749 return loop_count;
1750}
1751
1752unsigned int
1753ev_depth (EV_P)
1754{
1755 return loop_depth;
1275} 1756}
1276 1757
1277void 1758void
1278ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1759ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1279{ 1760{
… …
1284ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1765ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1285{ 1766{
1286 timeout_blocktime = interval; 1767 timeout_blocktime = interval;
1287} 1768}
1288 1769
1770void
1771ev_set_userdata (EV_P_ void *data)
1772{
1773 userdata = data;
1774}
1775
1776void *
1777ev_userdata (EV_P)
1778{
1779 return userdata;
1780}
1781
1782void
1783ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1784{
1785 invoke_cb = invoke_pending_cb;
1786}
1787
1788void
1789ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1790{
1791 release_cb = release;
1792 acquire_cb = acquire;
1793}
1794#endif
1795
1796/* initialise a loop structure, must be zero-initialised */
1289static void noinline 1797static void noinline ecb_cold
1290loop_init (EV_P_ unsigned int flags) 1798loop_init (EV_P_ unsigned int flags)
1291{ 1799{
1292 if (!backend) 1800 if (!backend)
1293 { 1801 {
1802 origflags = flags;
1803
1804#if EV_USE_REALTIME
1805 if (!have_realtime)
1806 {
1807 struct timespec ts;
1808
1809 if (!clock_gettime (CLOCK_REALTIME, &ts))
1810 have_realtime = 1;
1811 }
1812#endif
1813
1294#if EV_USE_MONOTONIC 1814#if EV_USE_MONOTONIC
1815 if (!have_monotonic)
1295 { 1816 {
1296 struct timespec ts; 1817 struct timespec ts;
1818
1297 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1819 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1298 have_monotonic = 1; 1820 have_monotonic = 1;
1299 } 1821 }
1300#endif
1301
1302 ev_rt_now = ev_time ();
1303 mn_now = get_clock ();
1304 now_floor = mn_now;
1305 rtmn_diff = ev_rt_now - mn_now;
1306
1307 io_blocktime = 0.;
1308 timeout_blocktime = 0.;
1309 backend = 0;
1310 backend_fd = -1;
1311 gotasync = 0;
1312#if EV_USE_INOTIFY
1313 fs_fd = -2;
1314#endif 1822#endif
1315 1823
1316 /* pid check not overridable via env */ 1824 /* pid check not overridable via env */
1317#ifndef _WIN32 1825#ifndef _WIN32
1318 if (flags & EVFLAG_FORKCHECK) 1826 if (flags & EVFLAG_FORKCHECK)
… …
1322 if (!(flags & EVFLAG_NOENV) 1830 if (!(flags & EVFLAG_NOENV)
1323 && !enable_secure () 1831 && !enable_secure ()
1324 && getenv ("LIBEV_FLAGS")) 1832 && getenv ("LIBEV_FLAGS"))
1325 flags = atoi (getenv ("LIBEV_FLAGS")); 1833 flags = atoi (getenv ("LIBEV_FLAGS"));
1326 1834
1327 if (!(flags & 0x0000ffffU)) 1835 ev_rt_now = ev_time ();
1836 mn_now = get_clock ();
1837 now_floor = mn_now;
1838 rtmn_diff = ev_rt_now - mn_now;
1839#if EV_FEATURE_API
1840 invoke_cb = ev_invoke_pending;
1841#endif
1842
1843 io_blocktime = 0.;
1844 timeout_blocktime = 0.;
1845 backend = 0;
1846 backend_fd = -1;
1847 sig_pending = 0;
1848#if EV_ASYNC_ENABLE
1849 async_pending = 0;
1850#endif
1851 pipe_write_skipped = 0;
1852 pipe_write_wanted = 0;
1853#if EV_USE_INOTIFY
1854 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1855#endif
1856#if EV_USE_SIGNALFD
1857 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1858#endif
1859
1860 if (!(flags & EVBACKEND_MASK))
1328 flags |= ev_recommended_backends (); 1861 flags |= ev_recommended_backends ();
1329 1862
1863#if EV_USE_IOCP
1864 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1865#endif
1330#if EV_USE_PORT 1866#if EV_USE_PORT
1331 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1867 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1332#endif 1868#endif
1333#if EV_USE_KQUEUE 1869#if EV_USE_KQUEUE
1334 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1870 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1341#endif 1877#endif
1342#if EV_USE_SELECT 1878#if EV_USE_SELECT
1343 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1879 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1344#endif 1880#endif
1345 1881
1882 ev_prepare_init (&pending_w, pendingcb);
1883
1884#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1346 ev_init (&pipeev, pipecb); 1885 ev_init (&pipe_w, pipecb);
1347 ev_set_priority (&pipeev, EV_MAXPRI); 1886 ev_set_priority (&pipe_w, EV_MAXPRI);
1887#endif
1348 } 1888 }
1349} 1889}
1350 1890
1351static void noinline 1891/* free up a loop structure */
1892void ecb_cold
1352loop_destroy (EV_P) 1893ev_loop_destroy (EV_P)
1353{ 1894{
1354 int i; 1895 int i;
1355 1896
1897#if EV_MULTIPLICITY
1898 /* mimic free (0) */
1899 if (!EV_A)
1900 return;
1901#endif
1902
1903#if EV_CLEANUP_ENABLE
1904 /* queue cleanup watchers (and execute them) */
1905 if (expect_false (cleanupcnt))
1906 {
1907 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1908 EV_INVOKE_PENDING;
1909 }
1910#endif
1911
1912#if EV_CHILD_ENABLE
1913 if (ev_is_active (&childev))
1914 {
1915 ev_ref (EV_A); /* child watcher */
1916 ev_signal_stop (EV_A_ &childev);
1917 }
1918#endif
1919
1356 if (ev_is_active (&pipeev)) 1920 if (ev_is_active (&pipe_w))
1357 { 1921 {
1358 ev_ref (EV_A); /* signal watcher */ 1922 /*ev_ref (EV_A);*/
1359 ev_io_stop (EV_A_ &pipeev); 1923 /*ev_io_stop (EV_A_ &pipe_w);*/
1360 1924
1361#if EV_USE_EVENTFD 1925#if EV_USE_EVENTFD
1362 if (evfd >= 0) 1926 if (evfd >= 0)
1363 close (evfd); 1927 close (evfd);
1364#endif 1928#endif
1365 1929
1366 if (evpipe [0] >= 0) 1930 if (evpipe [0] >= 0)
1367 { 1931 {
1368 close (evpipe [0]); 1932 EV_WIN32_CLOSE_FD (evpipe [0]);
1369 close (evpipe [1]); 1933 EV_WIN32_CLOSE_FD (evpipe [1]);
1370 } 1934 }
1371 } 1935 }
1936
1937#if EV_USE_SIGNALFD
1938 if (ev_is_active (&sigfd_w))
1939 close (sigfd);
1940#endif
1372 1941
1373#if EV_USE_INOTIFY 1942#if EV_USE_INOTIFY
1374 if (fs_fd >= 0) 1943 if (fs_fd >= 0)
1375 close (fs_fd); 1944 close (fs_fd);
1376#endif 1945#endif
1377 1946
1378 if (backend_fd >= 0) 1947 if (backend_fd >= 0)
1379 close (backend_fd); 1948 close (backend_fd);
1380 1949
1950#if EV_USE_IOCP
1951 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1952#endif
1381#if EV_USE_PORT 1953#if EV_USE_PORT
1382 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1954 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1383#endif 1955#endif
1384#if EV_USE_KQUEUE 1956#if EV_USE_KQUEUE
1385 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1957 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1400#if EV_IDLE_ENABLE 1972#if EV_IDLE_ENABLE
1401 array_free (idle, [i]); 1973 array_free (idle, [i]);
1402#endif 1974#endif
1403 } 1975 }
1404 1976
1405 ev_free (anfds); anfdmax = 0; 1977 ev_free (anfds); anfds = 0; anfdmax = 0;
1406 1978
1407 /* have to use the microsoft-never-gets-it-right macro */ 1979 /* have to use the microsoft-never-gets-it-right macro */
1980 array_free (rfeed, EMPTY);
1408 array_free (fdchange, EMPTY); 1981 array_free (fdchange, EMPTY);
1409 array_free (timer, EMPTY); 1982 array_free (timer, EMPTY);
1410#if EV_PERIODIC_ENABLE 1983#if EV_PERIODIC_ENABLE
1411 array_free (periodic, EMPTY); 1984 array_free (periodic, EMPTY);
1412#endif 1985#endif
1413#if EV_FORK_ENABLE 1986#if EV_FORK_ENABLE
1414 array_free (fork, EMPTY); 1987 array_free (fork, EMPTY);
1415#endif 1988#endif
1989#if EV_CLEANUP_ENABLE
1990 array_free (cleanup, EMPTY);
1991#endif
1416 array_free (prepare, EMPTY); 1992 array_free (prepare, EMPTY);
1417 array_free (check, EMPTY); 1993 array_free (check, EMPTY);
1418#if EV_ASYNC_ENABLE 1994#if EV_ASYNC_ENABLE
1419 array_free (async, EMPTY); 1995 array_free (async, EMPTY);
1420#endif 1996#endif
1421 1997
1422 backend = 0; 1998 backend = 0;
1999
2000#if EV_MULTIPLICITY
2001 if (ev_is_default_loop (EV_A))
2002#endif
2003 ev_default_loop_ptr = 0;
2004#if EV_MULTIPLICITY
2005 else
2006 ev_free (EV_A);
2007#endif
1423} 2008}
1424 2009
1425#if EV_USE_INOTIFY 2010#if EV_USE_INOTIFY
1426void inline_size infy_fork (EV_P); 2011inline_size void infy_fork (EV_P);
1427#endif 2012#endif
1428 2013
1429void inline_size 2014inline_size void
1430loop_fork (EV_P) 2015loop_fork (EV_P)
1431{ 2016{
1432#if EV_USE_PORT 2017#if EV_USE_PORT
1433 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2018 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1434#endif 2019#endif
… …
1440#endif 2025#endif
1441#if EV_USE_INOTIFY 2026#if EV_USE_INOTIFY
1442 infy_fork (EV_A); 2027 infy_fork (EV_A);
1443#endif 2028#endif
1444 2029
1445 if (ev_is_active (&pipeev)) 2030 if (ev_is_active (&pipe_w))
1446 { 2031 {
1447 /* this "locks" the handlers against writing to the pipe */ 2032 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1448 /* while we modify the fd vars */
1449 gotsig = 1;
1450#if EV_ASYNC_ENABLE
1451 gotasync = 1;
1452#endif
1453 2033
1454 ev_ref (EV_A); 2034 ev_ref (EV_A);
1455 ev_io_stop (EV_A_ &pipeev); 2035 ev_io_stop (EV_A_ &pipe_w);
1456 2036
1457#if EV_USE_EVENTFD 2037#if EV_USE_EVENTFD
1458 if (evfd >= 0) 2038 if (evfd >= 0)
1459 close (evfd); 2039 close (evfd);
1460#endif 2040#endif
1461 2041
1462 if (evpipe [0] >= 0) 2042 if (evpipe [0] >= 0)
1463 { 2043 {
1464 close (evpipe [0]); 2044 EV_WIN32_CLOSE_FD (evpipe [0]);
1465 close (evpipe [1]); 2045 EV_WIN32_CLOSE_FD (evpipe [1]);
1466 } 2046 }
1467 2047
2048#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1468 evpipe_init (EV_A); 2049 evpipe_init (EV_A);
1469 /* now iterate over everything, in case we missed something */ 2050 /* now iterate over everything, in case we missed something */
1470 pipecb (EV_A_ &pipeev, EV_READ); 2051 pipecb (EV_A_ &pipe_w, EV_READ);
2052#endif
1471 } 2053 }
1472 2054
1473 postfork = 0; 2055 postfork = 0;
1474} 2056}
1475 2057
1476#if EV_MULTIPLICITY 2058#if EV_MULTIPLICITY
1477 2059
1478struct ev_loop * 2060struct ev_loop * ecb_cold
1479ev_loop_new (unsigned int flags) 2061ev_loop_new (unsigned int flags)
1480{ 2062{
1481 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2063 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1482 2064
1483 memset (loop, 0, sizeof (struct ev_loop)); 2065 memset (EV_A, 0, sizeof (struct ev_loop));
1484
1485 loop_init (EV_A_ flags); 2066 loop_init (EV_A_ flags);
1486 2067
1487 if (ev_backend (EV_A)) 2068 if (ev_backend (EV_A))
1488 return loop; 2069 return EV_A;
1489 2070
2071 ev_free (EV_A);
1490 return 0; 2072 return 0;
1491} 2073}
1492 2074
1493void 2075#endif /* multiplicity */
1494ev_loop_destroy (EV_P)
1495{
1496 loop_destroy (EV_A);
1497 ev_free (loop);
1498}
1499
1500void
1501ev_loop_fork (EV_P)
1502{
1503 postfork = 1; /* must be in line with ev_default_fork */
1504}
1505 2076
1506#if EV_VERIFY 2077#if EV_VERIFY
1507static void noinline 2078static void noinline ecb_cold
1508verify_watcher (EV_P_ W w) 2079verify_watcher (EV_P_ W w)
1509{ 2080{
1510 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2081 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1511 2082
1512 if (w->pending) 2083 if (w->pending)
1513 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2084 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1514} 2085}
1515 2086
1516static void noinline 2087static void noinline ecb_cold
1517verify_heap (EV_P_ ANHE *heap, int N) 2088verify_heap (EV_P_ ANHE *heap, int N)
1518{ 2089{
1519 int i; 2090 int i;
1520 2091
1521 for (i = HEAP0; i < N + HEAP0; ++i) 2092 for (i = HEAP0; i < N + HEAP0; ++i)
1522 { 2093 {
1523 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); 2094 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1524 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); 2095 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1525 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); 2096 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1526 2097
1527 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2098 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1528 } 2099 }
1529} 2100}
1530 2101
1531static void noinline 2102static void noinline ecb_cold
1532array_verify (EV_P_ W *ws, int cnt) 2103array_verify (EV_P_ W *ws, int cnt)
1533{ 2104{
1534 while (cnt--) 2105 while (cnt--)
1535 { 2106 {
1536 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2107 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1537 verify_watcher (EV_A_ ws [cnt]); 2108 verify_watcher (EV_A_ ws [cnt]);
1538 } 2109 }
1539} 2110}
1540#endif 2111#endif
1541 2112
1542void 2113#if EV_FEATURE_API
2114void ecb_cold
1543ev_loop_verify (EV_P) 2115ev_verify (EV_P)
1544{ 2116{
1545#if EV_VERIFY 2117#if EV_VERIFY
1546 int i; 2118 int i;
1547 WL w; 2119 WL w;
1548 2120
1549 assert (activecnt >= -1); 2121 assert (activecnt >= -1);
1550 2122
1551 assert (fdchangemax >= fdchangecnt); 2123 assert (fdchangemax >= fdchangecnt);
1552 for (i = 0; i < fdchangecnt; ++i) 2124 for (i = 0; i < fdchangecnt; ++i)
1553 assert (("negative fd in fdchanges", fdchanges [i] >= 0)); 2125 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1554 2126
1555 assert (anfdmax >= 0); 2127 assert (anfdmax >= 0);
1556 for (i = 0; i < anfdmax; ++i) 2128 for (i = 0; i < anfdmax; ++i)
1557 for (w = anfds [i].head; w; w = w->next) 2129 for (w = anfds [i].head; w; w = w->next)
1558 { 2130 {
1559 verify_watcher (EV_A_ (W)w); 2131 verify_watcher (EV_A_ (W)w);
1560 assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); 2132 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1561 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2133 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1562 } 2134 }
1563 2135
1564 assert (timermax >= timercnt); 2136 assert (timermax >= timercnt);
1565 verify_heap (EV_A_ timers, timercnt); 2137 verify_heap (EV_A_ timers, timercnt);
1566 2138
… …
1582#if EV_FORK_ENABLE 2154#if EV_FORK_ENABLE
1583 assert (forkmax >= forkcnt); 2155 assert (forkmax >= forkcnt);
1584 array_verify (EV_A_ (W *)forks, forkcnt); 2156 array_verify (EV_A_ (W *)forks, forkcnt);
1585#endif 2157#endif
1586 2158
2159#if EV_CLEANUP_ENABLE
2160 assert (cleanupmax >= cleanupcnt);
2161 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2162#endif
2163
1587#if EV_ASYNC_ENABLE 2164#if EV_ASYNC_ENABLE
1588 assert (asyncmax >= asynccnt); 2165 assert (asyncmax >= asynccnt);
1589 array_verify (EV_A_ (W *)asyncs, asynccnt); 2166 array_verify (EV_A_ (W *)asyncs, asynccnt);
1590#endif 2167#endif
1591 2168
2169#if EV_PREPARE_ENABLE
1592 assert (preparemax >= preparecnt); 2170 assert (preparemax >= preparecnt);
1593 array_verify (EV_A_ (W *)prepares, preparecnt); 2171 array_verify (EV_A_ (W *)prepares, preparecnt);
2172#endif
1594 2173
2174#if EV_CHECK_ENABLE
1595 assert (checkmax >= checkcnt); 2175 assert (checkmax >= checkcnt);
1596 array_verify (EV_A_ (W *)checks, checkcnt); 2176 array_verify (EV_A_ (W *)checks, checkcnt);
2177#endif
1597 2178
1598# if 0 2179# if 0
2180#if EV_CHILD_ENABLE
1599 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 2181 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1600 for (signum = signalmax; signum--; ) if (signals [signum].gotsig) 2182 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2183#endif
1601# endif 2184# endif
1602#endif 2185#endif
1603} 2186}
1604 2187#endif
1605#endif /* multiplicity */
1606 2188
1607#if EV_MULTIPLICITY 2189#if EV_MULTIPLICITY
1608struct ev_loop * 2190struct ev_loop * ecb_cold
1609ev_default_loop_init (unsigned int flags)
1610#else 2191#else
1611int 2192int
2193#endif
1612ev_default_loop (unsigned int flags) 2194ev_default_loop (unsigned int flags)
1613#endif
1614{ 2195{
1615 if (!ev_default_loop_ptr) 2196 if (!ev_default_loop_ptr)
1616 { 2197 {
1617#if EV_MULTIPLICITY 2198#if EV_MULTIPLICITY
1618 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2199 EV_P = ev_default_loop_ptr = &default_loop_struct;
1619#else 2200#else
1620 ev_default_loop_ptr = 1; 2201 ev_default_loop_ptr = 1;
1621#endif 2202#endif
1622 2203
1623 loop_init (EV_A_ flags); 2204 loop_init (EV_A_ flags);
1624 2205
1625 if (ev_backend (EV_A)) 2206 if (ev_backend (EV_A))
1626 { 2207 {
1627#ifndef _WIN32 2208#if EV_CHILD_ENABLE
1628 ev_signal_init (&childev, childcb, SIGCHLD); 2209 ev_signal_init (&childev, childcb, SIGCHLD);
1629 ev_set_priority (&childev, EV_MAXPRI); 2210 ev_set_priority (&childev, EV_MAXPRI);
1630 ev_signal_start (EV_A_ &childev); 2211 ev_signal_start (EV_A_ &childev);
1631 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2212 ev_unref (EV_A); /* child watcher should not keep loop alive */
1632#endif 2213#endif
… …
1637 2218
1638 return ev_default_loop_ptr; 2219 return ev_default_loop_ptr;
1639} 2220}
1640 2221
1641void 2222void
1642ev_default_destroy (void) 2223ev_loop_fork (EV_P)
1643{ 2224{
1644#if EV_MULTIPLICITY
1645 struct ev_loop *loop = ev_default_loop_ptr;
1646#endif
1647
1648 ev_default_loop_ptr = 0;
1649
1650#ifndef _WIN32
1651 ev_ref (EV_A); /* child watcher */
1652 ev_signal_stop (EV_A_ &childev);
1653#endif
1654
1655 loop_destroy (EV_A);
1656}
1657
1658void
1659ev_default_fork (void)
1660{
1661#if EV_MULTIPLICITY
1662 struct ev_loop *loop = ev_default_loop_ptr;
1663#endif
1664
1665 postfork = 1; /* must be in line with ev_loop_fork */ 2225 postfork = 1; /* must be in line with ev_default_fork */
1666} 2226}
1667 2227
1668/*****************************************************************************/ 2228/*****************************************************************************/
1669 2229
1670void 2230void
1671ev_invoke (EV_P_ void *w, int revents) 2231ev_invoke (EV_P_ void *w, int revents)
1672{ 2232{
1673 EV_CB_INVOKE ((W)w, revents); 2233 EV_CB_INVOKE ((W)w, revents);
1674} 2234}
1675 2235
1676void inline_speed 2236unsigned int
1677call_pending (EV_P) 2237ev_pending_count (EV_P)
2238{
2239 int pri;
2240 unsigned int count = 0;
2241
2242 for (pri = NUMPRI; pri--; )
2243 count += pendingcnt [pri];
2244
2245 return count;
2246}
2247
2248void noinline
2249ev_invoke_pending (EV_P)
1678{ 2250{
1679 int pri; 2251 int pri;
1680 2252
1681 for (pri = NUMPRI; pri--; ) 2253 for (pri = NUMPRI; pri--; )
1682 while (pendingcnt [pri]) 2254 while (pendingcnt [pri])
1683 { 2255 {
1684 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2256 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1685 2257
1686 if (expect_true (p->w))
1687 {
1688 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1689
1690 p->w->pending = 0; 2258 p->w->pending = 0;
1691 EV_CB_INVOKE (p->w, p->events); 2259 EV_CB_INVOKE (p->w, p->events);
1692 EV_FREQUENT_CHECK; 2260 EV_FREQUENT_CHECK;
1693 }
1694 } 2261 }
1695} 2262}
1696 2263
1697#if EV_IDLE_ENABLE 2264#if EV_IDLE_ENABLE
1698void inline_size 2265/* make idle watchers pending. this handles the "call-idle */
2266/* only when higher priorities are idle" logic */
2267inline_size void
1699idle_reify (EV_P) 2268idle_reify (EV_P)
1700{ 2269{
1701 if (expect_false (idleall)) 2270 if (expect_false (idleall))
1702 { 2271 {
1703 int pri; 2272 int pri;
… …
1715 } 2284 }
1716 } 2285 }
1717} 2286}
1718#endif 2287#endif
1719 2288
1720void inline_size 2289/* make timers pending */
2290inline_size void
1721timers_reify (EV_P) 2291timers_reify (EV_P)
1722{ 2292{
1723 EV_FREQUENT_CHECK; 2293 EV_FREQUENT_CHECK;
1724 2294
1725 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2295 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1726 { 2296 {
1727 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2297 do
1728
1729 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1730
1731 /* first reschedule or stop timer */
1732 if (w->repeat)
1733 { 2298 {
2299 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2300
2301 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2302
2303 /* first reschedule or stop timer */
2304 if (w->repeat)
2305 {
1734 ev_at (w) += w->repeat; 2306 ev_at (w) += w->repeat;
1735 if (ev_at (w) < mn_now) 2307 if (ev_at (w) < mn_now)
1736 ev_at (w) = mn_now; 2308 ev_at (w) = mn_now;
1737 2309
1738 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2310 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1739 2311
1740 ANHE_at_cache (timers [HEAP0]); 2312 ANHE_at_cache (timers [HEAP0]);
1741 downheap (timers, timercnt, HEAP0); 2313 downheap (timers, timercnt, HEAP0);
2314 }
2315 else
2316 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2317
2318 EV_FREQUENT_CHECK;
2319 feed_reverse (EV_A_ (W)w);
1742 } 2320 }
1743 else 2321 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1744 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1745 2322
1746 EV_FREQUENT_CHECK; 2323 feed_reverse_done (EV_A_ EV_TIMER);
1747 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1748 } 2324 }
1749} 2325}
1750 2326
1751#if EV_PERIODIC_ENABLE 2327#if EV_PERIODIC_ENABLE
1752void inline_size 2328
2329static void noinline
2330periodic_recalc (EV_P_ ev_periodic *w)
2331{
2332 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2333 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2334
2335 /* the above almost always errs on the low side */
2336 while (at <= ev_rt_now)
2337 {
2338 ev_tstamp nat = at + w->interval;
2339
2340 /* when resolution fails us, we use ev_rt_now */
2341 if (expect_false (nat == at))
2342 {
2343 at = ev_rt_now;
2344 break;
2345 }
2346
2347 at = nat;
2348 }
2349
2350 ev_at (w) = at;
2351}
2352
2353/* make periodics pending */
2354inline_size void
1753periodics_reify (EV_P) 2355periodics_reify (EV_P)
1754{ 2356{
1755 EV_FREQUENT_CHECK; 2357 EV_FREQUENT_CHECK;
1756 2358
1757 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2359 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1758 { 2360 {
1759 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2361 int feed_count = 0;
1760 2362
1761 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2363 do
1762
1763 /* first reschedule or stop timer */
1764 if (w->reschedule_cb)
1765 { 2364 {
2365 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2366
2367 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2368
2369 /* first reschedule or stop timer */
2370 if (w->reschedule_cb)
2371 {
1766 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2372 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1767 2373
1768 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2374 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1769 2375
1770 ANHE_at_cache (periodics [HEAP0]); 2376 ANHE_at_cache (periodics [HEAP0]);
1771 downheap (periodics, periodiccnt, HEAP0); 2377 downheap (periodics, periodiccnt, HEAP0);
2378 }
2379 else if (w->interval)
2380 {
2381 periodic_recalc (EV_A_ w);
2382 ANHE_at_cache (periodics [HEAP0]);
2383 downheap (periodics, periodiccnt, HEAP0);
2384 }
2385 else
2386 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2387
2388 EV_FREQUENT_CHECK;
2389 feed_reverse (EV_A_ (W)w);
1772 } 2390 }
1773 else if (w->interval) 2391 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1774 {
1775 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1776 /* if next trigger time is not sufficiently in the future, put it there */
1777 /* this might happen because of floating point inexactness */
1778 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1779 {
1780 ev_at (w) += w->interval;
1781 2392
1782 /* if interval is unreasonably low we might still have a time in the past */
1783 /* so correct this. this will make the periodic very inexact, but the user */
1784 /* has effectively asked to get triggered more often than possible */
1785 if (ev_at (w) < ev_rt_now)
1786 ev_at (w) = ev_rt_now;
1787 }
1788
1789 ANHE_at_cache (periodics [HEAP0]);
1790 downheap (periodics, periodiccnt, HEAP0);
1791 }
1792 else
1793 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1794
1795 EV_FREQUENT_CHECK;
1796 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2393 feed_reverse_done (EV_A_ EV_PERIODIC);
1797 } 2394 }
1798} 2395}
1799 2396
2397/* simply recalculate all periodics */
2398/* TODO: maybe ensure that at least one event happens when jumping forward? */
1800static void noinline 2399static void noinline ecb_cold
1801periodics_reschedule (EV_P) 2400periodics_reschedule (EV_P)
1802{ 2401{
1803 int i; 2402 int i;
1804 2403
1805 /* adjust periodics after time jump */ 2404 /* adjust periodics after time jump */
… …
1808 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2407 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1809 2408
1810 if (w->reschedule_cb) 2409 if (w->reschedule_cb)
1811 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2410 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1812 else if (w->interval) 2411 else if (w->interval)
1813 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2412 periodic_recalc (EV_A_ w);
1814 2413
1815 ANHE_at_cache (periodics [i]); 2414 ANHE_at_cache (periodics [i]);
1816 } 2415 }
1817 2416
1818 reheap (periodics, periodiccnt); 2417 reheap (periodics, periodiccnt);
1819} 2418}
1820#endif 2419#endif
1821 2420
1822void inline_speed 2421/* adjust all timers by a given offset */
2422static void noinline ecb_cold
2423timers_reschedule (EV_P_ ev_tstamp adjust)
2424{
2425 int i;
2426
2427 for (i = 0; i < timercnt; ++i)
2428 {
2429 ANHE *he = timers + i + HEAP0;
2430 ANHE_w (*he)->at += adjust;
2431 ANHE_at_cache (*he);
2432 }
2433}
2434
2435/* fetch new monotonic and realtime times from the kernel */
2436/* also detect if there was a timejump, and act accordingly */
2437inline_speed void
1823time_update (EV_P_ ev_tstamp max_block) 2438time_update (EV_P_ ev_tstamp max_block)
1824{ 2439{
1825 int i;
1826
1827#if EV_USE_MONOTONIC 2440#if EV_USE_MONOTONIC
1828 if (expect_true (have_monotonic)) 2441 if (expect_true (have_monotonic))
1829 { 2442 {
2443 int i;
1830 ev_tstamp odiff = rtmn_diff; 2444 ev_tstamp odiff = rtmn_diff;
1831 2445
1832 mn_now = get_clock (); 2446 mn_now = get_clock ();
1833 2447
1834 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2448 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1850 * doesn't hurt either as we only do this on time-jumps or 2464 * doesn't hurt either as we only do this on time-jumps or
1851 * in the unlikely event of having been preempted here. 2465 * in the unlikely event of having been preempted here.
1852 */ 2466 */
1853 for (i = 4; --i; ) 2467 for (i = 4; --i; )
1854 { 2468 {
2469 ev_tstamp diff;
1855 rtmn_diff = ev_rt_now - mn_now; 2470 rtmn_diff = ev_rt_now - mn_now;
1856 2471
2472 diff = odiff - rtmn_diff;
2473
1857 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2474 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1858 return; /* all is well */ 2475 return; /* all is well */
1859 2476
1860 ev_rt_now = ev_time (); 2477 ev_rt_now = ev_time ();
1861 mn_now = get_clock (); 2478 mn_now = get_clock ();
1862 now_floor = mn_now; 2479 now_floor = mn_now;
1863 } 2480 }
1864 2481
2482 /* no timer adjustment, as the monotonic clock doesn't jump */
2483 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1865# if EV_PERIODIC_ENABLE 2484# if EV_PERIODIC_ENABLE
1866 periodics_reschedule (EV_A); 2485 periodics_reschedule (EV_A);
1867# endif 2486# endif
1868 /* no timer adjustment, as the monotonic clock doesn't jump */
1869 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1870 } 2487 }
1871 else 2488 else
1872#endif 2489#endif
1873 { 2490 {
1874 ev_rt_now = ev_time (); 2491 ev_rt_now = ev_time ();
1875 2492
1876 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2493 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1877 { 2494 {
2495 /* adjust timers. this is easy, as the offset is the same for all of them */
2496 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1878#if EV_PERIODIC_ENABLE 2497#if EV_PERIODIC_ENABLE
1879 periodics_reschedule (EV_A); 2498 periodics_reschedule (EV_A);
1880#endif 2499#endif
1881 /* adjust timers. this is easy, as the offset is the same for all of them */
1882 for (i = 0; i < timercnt; ++i)
1883 {
1884 ANHE *he = timers + i + HEAP0;
1885 ANHE_w (*he)->at += ev_rt_now - mn_now;
1886 ANHE_at_cache (*he);
1887 }
1888 } 2500 }
1889 2501
1890 mn_now = ev_rt_now; 2502 mn_now = ev_rt_now;
1891 } 2503 }
1892} 2504}
1893 2505
1894void 2506void
1895ev_ref (EV_P)
1896{
1897 ++activecnt;
1898}
1899
1900void
1901ev_unref (EV_P)
1902{
1903 --activecnt;
1904}
1905
1906void
1907ev_now_update (EV_P)
1908{
1909 time_update (EV_A_ 1e100);
1910}
1911
1912static int loop_done;
1913
1914void
1915ev_loop (EV_P_ int flags) 2507ev_run (EV_P_ int flags)
1916{ 2508{
2509#if EV_FEATURE_API
2510 ++loop_depth;
2511#endif
2512
2513 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2514
1917 loop_done = EVUNLOOP_CANCEL; 2515 loop_done = EVBREAK_CANCEL;
1918 2516
1919 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2517 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1920 2518
1921 do 2519 do
1922 { 2520 {
1923#if EV_VERIFY >= 2 2521#if EV_VERIFY >= 2
1924 ev_loop_verify (EV_A); 2522 ev_verify (EV_A);
1925#endif 2523#endif
1926 2524
1927#ifndef _WIN32 2525#ifndef _WIN32
1928 if (expect_false (curpid)) /* penalise the forking check even more */ 2526 if (expect_false (curpid)) /* penalise the forking check even more */
1929 if (expect_false (getpid () != curpid)) 2527 if (expect_false (getpid () != curpid))
… …
1937 /* we might have forked, so queue fork handlers */ 2535 /* we might have forked, so queue fork handlers */
1938 if (expect_false (postfork)) 2536 if (expect_false (postfork))
1939 if (forkcnt) 2537 if (forkcnt)
1940 { 2538 {
1941 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2539 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1942 call_pending (EV_A); 2540 EV_INVOKE_PENDING;
1943 } 2541 }
1944#endif 2542#endif
1945 2543
2544#if EV_PREPARE_ENABLE
1946 /* queue prepare watchers (and execute them) */ 2545 /* queue prepare watchers (and execute them) */
1947 if (expect_false (preparecnt)) 2546 if (expect_false (preparecnt))
1948 { 2547 {
1949 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2548 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1950 call_pending (EV_A); 2549 EV_INVOKE_PENDING;
1951 } 2550 }
2551#endif
1952 2552
1953 if (expect_false (!activecnt)) 2553 if (expect_false (loop_done))
1954 break; 2554 break;
1955 2555
1956 /* we might have forked, so reify kernel state if necessary */ 2556 /* we might have forked, so reify kernel state if necessary */
1957 if (expect_false (postfork)) 2557 if (expect_false (postfork))
1958 loop_fork (EV_A); 2558 loop_fork (EV_A);
… …
1963 /* calculate blocking time */ 2563 /* calculate blocking time */
1964 { 2564 {
1965 ev_tstamp waittime = 0.; 2565 ev_tstamp waittime = 0.;
1966 ev_tstamp sleeptime = 0.; 2566 ev_tstamp sleeptime = 0.;
1967 2567
2568 /* remember old timestamp for io_blocktime calculation */
2569 ev_tstamp prev_mn_now = mn_now;
2570
2571 /* update time to cancel out callback processing overhead */
2572 time_update (EV_A_ 1e100);
2573
2574 /* from now on, we want a pipe-wake-up */
2575 pipe_write_wanted = 1;
2576
1968 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2577 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1969 { 2578 {
1970 /* update time to cancel out callback processing overhead */
1971 time_update (EV_A_ 1e100);
1972
1973 waittime = MAX_BLOCKTIME; 2579 waittime = MAX_BLOCKTIME;
1974 2580
1975 if (timercnt) 2581 if (timercnt)
1976 { 2582 {
1977 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2583 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1978 if (waittime > to) waittime = to; 2584 if (waittime > to) waittime = to;
1979 } 2585 }
1980 2586
1981#if EV_PERIODIC_ENABLE 2587#if EV_PERIODIC_ENABLE
1982 if (periodiccnt) 2588 if (periodiccnt)
1983 { 2589 {
1984 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2590 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1985 if (waittime > to) waittime = to; 2591 if (waittime > to) waittime = to;
1986 } 2592 }
1987#endif 2593#endif
1988 2594
2595 /* don't let timeouts decrease the waittime below timeout_blocktime */
1989 if (expect_false (waittime < timeout_blocktime)) 2596 if (expect_false (waittime < timeout_blocktime))
1990 waittime = timeout_blocktime; 2597 waittime = timeout_blocktime;
1991 2598
1992 sleeptime = waittime - backend_fudge; 2599 /* at this point, we NEED to wait, so we have to ensure */
2600 /* to pass a minimum nonzero value to the backend */
2601 if (expect_false (waittime < backend_mintime))
2602 waittime = backend_mintime;
1993 2603
2604 /* extra check because io_blocktime is commonly 0 */
1994 if (expect_true (sleeptime > io_blocktime)) 2605 if (expect_false (io_blocktime))
1995 sleeptime = io_blocktime;
1996
1997 if (sleeptime)
1998 { 2606 {
2607 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2608
2609 if (sleeptime > waittime - backend_mintime)
2610 sleeptime = waittime - backend_mintime;
2611
2612 if (expect_true (sleeptime > 0.))
2613 {
1999 ev_sleep (sleeptime); 2614 ev_sleep (sleeptime);
2000 waittime -= sleeptime; 2615 waittime -= sleeptime;
2616 }
2001 } 2617 }
2002 } 2618 }
2003 2619
2620#if EV_FEATURE_API
2004 ++loop_count; 2621 ++loop_count;
2622#endif
2623 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2005 backend_poll (EV_A_ waittime); 2624 backend_poll (EV_A_ waittime);
2625 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2626
2627 pipe_write_wanted = 0;
2628
2629 if (pipe_write_skipped)
2630 {
2631 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2632 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2633 }
2634
2006 2635
2007 /* update ev_rt_now, do magic */ 2636 /* update ev_rt_now, do magic */
2008 time_update (EV_A_ waittime + sleeptime); 2637 time_update (EV_A_ waittime + sleeptime);
2009 } 2638 }
2010 2639
… …
2017#if EV_IDLE_ENABLE 2646#if EV_IDLE_ENABLE
2018 /* queue idle watchers unless other events are pending */ 2647 /* queue idle watchers unless other events are pending */
2019 idle_reify (EV_A); 2648 idle_reify (EV_A);
2020#endif 2649#endif
2021 2650
2651#if EV_CHECK_ENABLE
2022 /* queue check watchers, to be executed first */ 2652 /* queue check watchers, to be executed first */
2023 if (expect_false (checkcnt)) 2653 if (expect_false (checkcnt))
2024 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2654 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2655#endif
2025 2656
2026 call_pending (EV_A); 2657 EV_INVOKE_PENDING;
2027 } 2658 }
2028 while (expect_true ( 2659 while (expect_true (
2029 activecnt 2660 activecnt
2030 && !loop_done 2661 && !loop_done
2031 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2662 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2032 )); 2663 ));
2033 2664
2034 if (loop_done == EVUNLOOP_ONE) 2665 if (loop_done == EVBREAK_ONE)
2035 loop_done = EVUNLOOP_CANCEL; 2666 loop_done = EVBREAK_CANCEL;
2667
2668#if EV_FEATURE_API
2669 --loop_depth;
2670#endif
2036} 2671}
2037 2672
2038void 2673void
2039ev_unloop (EV_P_ int how) 2674ev_break (EV_P_ int how)
2040{ 2675{
2041 loop_done = how; 2676 loop_done = how;
2042} 2677}
2043 2678
2679void
2680ev_ref (EV_P)
2681{
2682 ++activecnt;
2683}
2684
2685void
2686ev_unref (EV_P)
2687{
2688 --activecnt;
2689}
2690
2691void
2692ev_now_update (EV_P)
2693{
2694 time_update (EV_A_ 1e100);
2695}
2696
2697void
2698ev_suspend (EV_P)
2699{
2700 ev_now_update (EV_A);
2701}
2702
2703void
2704ev_resume (EV_P)
2705{
2706 ev_tstamp mn_prev = mn_now;
2707
2708 ev_now_update (EV_A);
2709 timers_reschedule (EV_A_ mn_now - mn_prev);
2710#if EV_PERIODIC_ENABLE
2711 /* TODO: really do this? */
2712 periodics_reschedule (EV_A);
2713#endif
2714}
2715
2044/*****************************************************************************/ 2716/*****************************************************************************/
2717/* singly-linked list management, used when the expected list length is short */
2045 2718
2046void inline_size 2719inline_size void
2047wlist_add (WL *head, WL elem) 2720wlist_add (WL *head, WL elem)
2048{ 2721{
2049 elem->next = *head; 2722 elem->next = *head;
2050 *head = elem; 2723 *head = elem;
2051} 2724}
2052 2725
2053void inline_size 2726inline_size void
2054wlist_del (WL *head, WL elem) 2727wlist_del (WL *head, WL elem)
2055{ 2728{
2056 while (*head) 2729 while (*head)
2057 { 2730 {
2058 if (*head == elem) 2731 if (expect_true (*head == elem))
2059 { 2732 {
2060 *head = elem->next; 2733 *head = elem->next;
2061 return; 2734 break;
2062 } 2735 }
2063 2736
2064 head = &(*head)->next; 2737 head = &(*head)->next;
2065 } 2738 }
2066} 2739}
2067 2740
2068void inline_speed 2741/* internal, faster, version of ev_clear_pending */
2742inline_speed void
2069clear_pending (EV_P_ W w) 2743clear_pending (EV_P_ W w)
2070{ 2744{
2071 if (w->pending) 2745 if (w->pending)
2072 { 2746 {
2073 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2747 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2074 w->pending = 0; 2748 w->pending = 0;
2075 } 2749 }
2076} 2750}
2077 2751
2078int 2752int
… …
2082 int pending = w_->pending; 2756 int pending = w_->pending;
2083 2757
2084 if (expect_true (pending)) 2758 if (expect_true (pending))
2085 { 2759 {
2086 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2760 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2761 p->w = (W)&pending_w;
2087 w_->pending = 0; 2762 w_->pending = 0;
2088 p->w = 0;
2089 return p->events; 2763 return p->events;
2090 } 2764 }
2091 else 2765 else
2092 return 0; 2766 return 0;
2093} 2767}
2094 2768
2095void inline_size 2769inline_size void
2096pri_adjust (EV_P_ W w) 2770pri_adjust (EV_P_ W w)
2097{ 2771{
2098 int pri = w->priority; 2772 int pri = ev_priority (w);
2099 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2773 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2100 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2774 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2101 w->priority = pri; 2775 ev_set_priority (w, pri);
2102} 2776}
2103 2777
2104void inline_speed 2778inline_speed void
2105ev_start (EV_P_ W w, int active) 2779ev_start (EV_P_ W w, int active)
2106{ 2780{
2107 pri_adjust (EV_A_ w); 2781 pri_adjust (EV_A_ w);
2108 w->active = active; 2782 w->active = active;
2109 ev_ref (EV_A); 2783 ev_ref (EV_A);
2110} 2784}
2111 2785
2112void inline_size 2786inline_size void
2113ev_stop (EV_P_ W w) 2787ev_stop (EV_P_ W w)
2114{ 2788{
2115 ev_unref (EV_A); 2789 ev_unref (EV_A);
2116 w->active = 0; 2790 w->active = 0;
2117} 2791}
… …
2124 int fd = w->fd; 2798 int fd = w->fd;
2125 2799
2126 if (expect_false (ev_is_active (w))) 2800 if (expect_false (ev_is_active (w)))
2127 return; 2801 return;
2128 2802
2129 assert (("ev_io_start called with negative fd", fd >= 0)); 2803 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2130 assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE)))); 2804 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2131 2805
2132 EV_FREQUENT_CHECK; 2806 EV_FREQUENT_CHECK;
2133 2807
2134 ev_start (EV_A_ (W)w, 1); 2808 ev_start (EV_A_ (W)w, 1);
2135 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 2809 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2136 wlist_add (&anfds[fd].head, (WL)w); 2810 wlist_add (&anfds[fd].head, (WL)w);
2137 2811
2138 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2812 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2139 w->events &= ~EV_IOFDSET; 2813 w->events &= ~EV__IOFDSET;
2140 2814
2141 EV_FREQUENT_CHECK; 2815 EV_FREQUENT_CHECK;
2142} 2816}
2143 2817
2144void noinline 2818void noinline
… …
2146{ 2820{
2147 clear_pending (EV_A_ (W)w); 2821 clear_pending (EV_A_ (W)w);
2148 if (expect_false (!ev_is_active (w))) 2822 if (expect_false (!ev_is_active (w)))
2149 return; 2823 return;
2150 2824
2151 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2825 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2152 2826
2153 EV_FREQUENT_CHECK; 2827 EV_FREQUENT_CHECK;
2154 2828
2155 wlist_del (&anfds[w->fd].head, (WL)w); 2829 wlist_del (&anfds[w->fd].head, (WL)w);
2156 ev_stop (EV_A_ (W)w); 2830 ev_stop (EV_A_ (W)w);
2157 2831
2158 fd_change (EV_A_ w->fd, 1); 2832 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2159 2833
2160 EV_FREQUENT_CHECK; 2834 EV_FREQUENT_CHECK;
2161} 2835}
2162 2836
2163void noinline 2837void noinline
… …
2166 if (expect_false (ev_is_active (w))) 2840 if (expect_false (ev_is_active (w)))
2167 return; 2841 return;
2168 2842
2169 ev_at (w) += mn_now; 2843 ev_at (w) += mn_now;
2170 2844
2171 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2845 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2172 2846
2173 EV_FREQUENT_CHECK; 2847 EV_FREQUENT_CHECK;
2174 2848
2175 ++timercnt; 2849 ++timercnt;
2176 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2850 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2179 ANHE_at_cache (timers [ev_active (w)]); 2853 ANHE_at_cache (timers [ev_active (w)]);
2180 upheap (timers, ev_active (w)); 2854 upheap (timers, ev_active (w));
2181 2855
2182 EV_FREQUENT_CHECK; 2856 EV_FREQUENT_CHECK;
2183 2857
2184 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2858 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2185} 2859}
2186 2860
2187void noinline 2861void noinline
2188ev_timer_stop (EV_P_ ev_timer *w) 2862ev_timer_stop (EV_P_ ev_timer *w)
2189{ 2863{
… …
2194 EV_FREQUENT_CHECK; 2868 EV_FREQUENT_CHECK;
2195 2869
2196 { 2870 {
2197 int active = ev_active (w); 2871 int active = ev_active (w);
2198 2872
2199 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2873 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2200 2874
2201 --timercnt; 2875 --timercnt;
2202 2876
2203 if (expect_true (active < timercnt + HEAP0)) 2877 if (expect_true (active < timercnt + HEAP0))
2204 { 2878 {
2205 timers [active] = timers [timercnt + HEAP0]; 2879 timers [active] = timers [timercnt + HEAP0];
2206 adjustheap (timers, timercnt, active); 2880 adjustheap (timers, timercnt, active);
2207 } 2881 }
2208 } 2882 }
2209 2883
2210 EV_FREQUENT_CHECK;
2211
2212 ev_at (w) -= mn_now; 2884 ev_at (w) -= mn_now;
2213 2885
2214 ev_stop (EV_A_ (W)w); 2886 ev_stop (EV_A_ (W)w);
2887
2888 EV_FREQUENT_CHECK;
2215} 2889}
2216 2890
2217void noinline 2891void noinline
2218ev_timer_again (EV_P_ ev_timer *w) 2892ev_timer_again (EV_P_ ev_timer *w)
2219{ 2893{
… …
2237 } 2911 }
2238 2912
2239 EV_FREQUENT_CHECK; 2913 EV_FREQUENT_CHECK;
2240} 2914}
2241 2915
2916ev_tstamp
2917ev_timer_remaining (EV_P_ ev_timer *w)
2918{
2919 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2920}
2921
2242#if EV_PERIODIC_ENABLE 2922#if EV_PERIODIC_ENABLE
2243void noinline 2923void noinline
2244ev_periodic_start (EV_P_ ev_periodic *w) 2924ev_periodic_start (EV_P_ ev_periodic *w)
2245{ 2925{
2246 if (expect_false (ev_is_active (w))) 2926 if (expect_false (ev_is_active (w)))
… …
2248 2928
2249 if (w->reschedule_cb) 2929 if (w->reschedule_cb)
2250 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2930 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2251 else if (w->interval) 2931 else if (w->interval)
2252 { 2932 {
2253 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2933 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2254 /* this formula differs from the one in periodic_reify because we do not always round up */ 2934 periodic_recalc (EV_A_ w);
2255 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2256 } 2935 }
2257 else 2936 else
2258 ev_at (w) = w->offset; 2937 ev_at (w) = w->offset;
2259 2938
2260 EV_FREQUENT_CHECK; 2939 EV_FREQUENT_CHECK;
… …
2266 ANHE_at_cache (periodics [ev_active (w)]); 2945 ANHE_at_cache (periodics [ev_active (w)]);
2267 upheap (periodics, ev_active (w)); 2946 upheap (periodics, ev_active (w));
2268 2947
2269 EV_FREQUENT_CHECK; 2948 EV_FREQUENT_CHECK;
2270 2949
2271 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2950 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2272} 2951}
2273 2952
2274void noinline 2953void noinline
2275ev_periodic_stop (EV_P_ ev_periodic *w) 2954ev_periodic_stop (EV_P_ ev_periodic *w)
2276{ 2955{
… …
2281 EV_FREQUENT_CHECK; 2960 EV_FREQUENT_CHECK;
2282 2961
2283 { 2962 {
2284 int active = ev_active (w); 2963 int active = ev_active (w);
2285 2964
2286 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2965 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2287 2966
2288 --periodiccnt; 2967 --periodiccnt;
2289 2968
2290 if (expect_true (active < periodiccnt + HEAP0)) 2969 if (expect_true (active < periodiccnt + HEAP0))
2291 { 2970 {
2292 periodics [active] = periodics [periodiccnt + HEAP0]; 2971 periodics [active] = periodics [periodiccnt + HEAP0];
2293 adjustheap (periodics, periodiccnt, active); 2972 adjustheap (periodics, periodiccnt, active);
2294 } 2973 }
2295 } 2974 }
2296 2975
2297 EV_FREQUENT_CHECK;
2298
2299 ev_stop (EV_A_ (W)w); 2976 ev_stop (EV_A_ (W)w);
2977
2978 EV_FREQUENT_CHECK;
2300} 2979}
2301 2980
2302void noinline 2981void noinline
2303ev_periodic_again (EV_P_ ev_periodic *w) 2982ev_periodic_again (EV_P_ ev_periodic *w)
2304{ 2983{
… …
2310 2989
2311#ifndef SA_RESTART 2990#ifndef SA_RESTART
2312# define SA_RESTART 0 2991# define SA_RESTART 0
2313#endif 2992#endif
2314 2993
2994#if EV_SIGNAL_ENABLE
2995
2315void noinline 2996void noinline
2316ev_signal_start (EV_P_ ev_signal *w) 2997ev_signal_start (EV_P_ ev_signal *w)
2317{ 2998{
2318#if EV_MULTIPLICITY
2319 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2320#endif
2321 if (expect_false (ev_is_active (w))) 2999 if (expect_false (ev_is_active (w)))
2322 return; 3000 return;
2323 3001
2324 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3002 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2325 3003
2326 evpipe_init (EV_A); 3004#if EV_MULTIPLICITY
3005 assert (("libev: a signal must not be attached to two different loops",
3006 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2327 3007
2328 EV_FREQUENT_CHECK; 3008 signals [w->signum - 1].loop = EV_A;
3009#endif
2329 3010
3011 EV_FREQUENT_CHECK;
3012
3013#if EV_USE_SIGNALFD
3014 if (sigfd == -2)
2330 { 3015 {
2331#ifndef _WIN32 3016 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2332 sigset_t full, prev; 3017 if (sigfd < 0 && errno == EINVAL)
2333 sigfillset (&full); 3018 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2334 sigprocmask (SIG_SETMASK, &full, &prev);
2335#endif
2336 3019
2337 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); 3020 if (sigfd >= 0)
3021 {
3022 fd_intern (sigfd); /* doing it twice will not hurt */
2338 3023
2339#ifndef _WIN32 3024 sigemptyset (&sigfd_set);
2340 sigprocmask (SIG_SETMASK, &prev, 0); 3025
2341#endif 3026 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3027 ev_set_priority (&sigfd_w, EV_MAXPRI);
3028 ev_io_start (EV_A_ &sigfd_w);
3029 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3030 }
2342 } 3031 }
3032
3033 if (sigfd >= 0)
3034 {
3035 /* TODO: check .head */
3036 sigaddset (&sigfd_set, w->signum);
3037 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3038
3039 signalfd (sigfd, &sigfd_set, 0);
3040 }
3041#endif
2343 3042
2344 ev_start (EV_A_ (W)w, 1); 3043 ev_start (EV_A_ (W)w, 1);
2345 wlist_add (&signals [w->signum - 1].head, (WL)w); 3044 wlist_add (&signals [w->signum - 1].head, (WL)w);
2346 3045
2347 if (!((WL)w)->next) 3046 if (!((WL)w)->next)
3047# if EV_USE_SIGNALFD
3048 if (sigfd < 0) /*TODO*/
3049# endif
2348 { 3050 {
2349#if _WIN32 3051# ifdef _WIN32
3052 evpipe_init (EV_A);
3053
2350 signal (w->signum, ev_sighandler); 3054 signal (w->signum, ev_sighandler);
2351#else 3055# else
2352 struct sigaction sa; 3056 struct sigaction sa;
3057
3058 evpipe_init (EV_A);
3059
2353 sa.sa_handler = ev_sighandler; 3060 sa.sa_handler = ev_sighandler;
2354 sigfillset (&sa.sa_mask); 3061 sigfillset (&sa.sa_mask);
2355 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3062 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2356 sigaction (w->signum, &sa, 0); 3063 sigaction (w->signum, &sa, 0);
3064
3065 if (origflags & EVFLAG_NOSIGMASK)
3066 {
3067 sigemptyset (&sa.sa_mask);
3068 sigaddset (&sa.sa_mask, w->signum);
3069 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3070 }
2357#endif 3071#endif
2358 } 3072 }
2359 3073
2360 EV_FREQUENT_CHECK; 3074 EV_FREQUENT_CHECK;
2361} 3075}
2362 3076
2363void noinline 3077void noinline
… …
2371 3085
2372 wlist_del (&signals [w->signum - 1].head, (WL)w); 3086 wlist_del (&signals [w->signum - 1].head, (WL)w);
2373 ev_stop (EV_A_ (W)w); 3087 ev_stop (EV_A_ (W)w);
2374 3088
2375 if (!signals [w->signum - 1].head) 3089 if (!signals [w->signum - 1].head)
3090 {
3091#if EV_MULTIPLICITY
3092 signals [w->signum - 1].loop = 0; /* unattach from signal */
3093#endif
3094#if EV_USE_SIGNALFD
3095 if (sigfd >= 0)
3096 {
3097 sigset_t ss;
3098
3099 sigemptyset (&ss);
3100 sigaddset (&ss, w->signum);
3101 sigdelset (&sigfd_set, w->signum);
3102
3103 signalfd (sigfd, &sigfd_set, 0);
3104 sigprocmask (SIG_UNBLOCK, &ss, 0);
3105 }
3106 else
3107#endif
2376 signal (w->signum, SIG_DFL); 3108 signal (w->signum, SIG_DFL);
3109 }
2377 3110
2378 EV_FREQUENT_CHECK; 3111 EV_FREQUENT_CHECK;
2379} 3112}
3113
3114#endif
3115
3116#if EV_CHILD_ENABLE
2380 3117
2381void 3118void
2382ev_child_start (EV_P_ ev_child *w) 3119ev_child_start (EV_P_ ev_child *w)
2383{ 3120{
2384#if EV_MULTIPLICITY 3121#if EV_MULTIPLICITY
2385 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3122 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2386#endif 3123#endif
2387 if (expect_false (ev_is_active (w))) 3124 if (expect_false (ev_is_active (w)))
2388 return; 3125 return;
2389 3126
2390 EV_FREQUENT_CHECK; 3127 EV_FREQUENT_CHECK;
2391 3128
2392 ev_start (EV_A_ (W)w, 1); 3129 ev_start (EV_A_ (W)w, 1);
2393 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3130 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2394 3131
2395 EV_FREQUENT_CHECK; 3132 EV_FREQUENT_CHECK;
2396} 3133}
2397 3134
2398void 3135void
… …
2402 if (expect_false (!ev_is_active (w))) 3139 if (expect_false (!ev_is_active (w)))
2403 return; 3140 return;
2404 3141
2405 EV_FREQUENT_CHECK; 3142 EV_FREQUENT_CHECK;
2406 3143
2407 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3144 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2408 ev_stop (EV_A_ (W)w); 3145 ev_stop (EV_A_ (W)w);
2409 3146
2410 EV_FREQUENT_CHECK; 3147 EV_FREQUENT_CHECK;
2411} 3148}
3149
3150#endif
2412 3151
2413#if EV_STAT_ENABLE 3152#if EV_STAT_ENABLE
2414 3153
2415# ifdef _WIN32 3154# ifdef _WIN32
2416# undef lstat 3155# undef lstat
… …
2422#define MIN_STAT_INTERVAL 0.1074891 3161#define MIN_STAT_INTERVAL 0.1074891
2423 3162
2424static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3163static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2425 3164
2426#if EV_USE_INOTIFY 3165#if EV_USE_INOTIFY
2427# define EV_INOTIFY_BUFSIZE 8192 3166
3167/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3168# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2428 3169
2429static void noinline 3170static void noinline
2430infy_add (EV_P_ ev_stat *w) 3171infy_add (EV_P_ ev_stat *w)
2431{ 3172{
2432 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); 3173 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);
2433 3174
2434 if (w->wd < 0) 3175 if (w->wd >= 0)
3176 {
3177 struct statfs sfs;
3178
3179 /* now local changes will be tracked by inotify, but remote changes won't */
3180 /* unless the filesystem is known to be local, we therefore still poll */
3181 /* also do poll on <2.6.25, but with normal frequency */
3182
3183 if (!fs_2625)
3184 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3185 else if (!statfs (w->path, &sfs)
3186 && (sfs.f_type == 0x1373 /* devfs */
3187 || sfs.f_type == 0xEF53 /* ext2/3 */
3188 || sfs.f_type == 0x3153464a /* jfs */
3189 || sfs.f_type == 0x52654973 /* reiser3 */
3190 || sfs.f_type == 0x01021994 /* tempfs */
3191 || sfs.f_type == 0x58465342 /* xfs */))
3192 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3193 else
3194 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2435 { 3195 }
3196 else
3197 {
3198 /* can't use inotify, continue to stat */
2436 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3199 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2437 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2438 3200
2439 /* monitor some parent directory for speedup hints */ 3201 /* if path is not there, monitor some parent directory for speedup hints */
2440 /* note that exceeding the hardcoded path limit is not a correctness issue, */ 3202 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2441 /* but an efficiency issue only */ 3203 /* but an efficiency issue only */
2442 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3204 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2443 { 3205 {
2444 char path [4096]; 3206 char path [4096];
… …
2449 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3211 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2450 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3212 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2451 3213
2452 char *pend = strrchr (path, '/'); 3214 char *pend = strrchr (path, '/');
2453 3215
2454 if (!pend) 3216 if (!pend || pend == path)
2455 break; /* whoops, no '/', complain to your admin */ 3217 break;
2456 3218
2457 *pend = 0; 3219 *pend = 0;
2458 w->wd = inotify_add_watch (fs_fd, path, mask); 3220 w->wd = inotify_add_watch (fs_fd, path, mask);
2459 } 3221 }
2460 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3222 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2461 } 3223 }
2462 } 3224 }
2463 else 3225
2464 { 3226 if (w->wd >= 0)
2465 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3227 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2466 3228
2467 /* now local changes will be tracked by inotify, but remote changes won't */ 3229 /* now re-arm timer, if required */
2468 /* unless the filesystem it known to be local, we therefore still poll */ 3230 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2469 /* also do poll on <2.6.25, but with normal frequency */
2470 struct statfs sfs;
2471
2472 if (fs_2625 && !statfs (w->path, &sfs))
2473 if (sfs.f_type == 0x1373 /* devfs */
2474 || sfs.f_type == 0xEF53 /* ext2/3 */
2475 || sfs.f_type == 0x3153464a /* jfs */
2476 || sfs.f_type == 0x52654973 /* reiser3 */
2477 || sfs.f_type == 0x01021994 /* tempfs */
2478 || sfs.f_type == 0x58465342 /* xfs */)
2479 return;
2480
2481 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2482 ev_timer_again (EV_A_ &w->timer); 3231 ev_timer_again (EV_A_ &w->timer);
2483 } 3232 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2484} 3233}
2485 3234
2486static void noinline 3235static void noinline
2487infy_del (EV_P_ ev_stat *w) 3236infy_del (EV_P_ ev_stat *w)
2488{ 3237{
… …
2491 3240
2492 if (wd < 0) 3241 if (wd < 0)
2493 return; 3242 return;
2494 3243
2495 w->wd = -2; 3244 w->wd = -2;
2496 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3245 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2497 wlist_del (&fs_hash [slot].head, (WL)w); 3246 wlist_del (&fs_hash [slot].head, (WL)w);
2498 3247
2499 /* remove this watcher, if others are watching it, they will rearm */ 3248 /* remove this watcher, if others are watching it, they will rearm */
2500 inotify_rm_watch (fs_fd, wd); 3249 inotify_rm_watch (fs_fd, wd);
2501} 3250}
… …
2503static void noinline 3252static void noinline
2504infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3253infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2505{ 3254{
2506 if (slot < 0) 3255 if (slot < 0)
2507 /* overflow, need to check for all hash slots */ 3256 /* overflow, need to check for all hash slots */
2508 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3257 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2509 infy_wd (EV_A_ slot, wd, ev); 3258 infy_wd (EV_A_ slot, wd, ev);
2510 else 3259 else
2511 { 3260 {
2512 WL w_; 3261 WL w_;
2513 3262
2514 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3263 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2515 { 3264 {
2516 ev_stat *w = (ev_stat *)w_; 3265 ev_stat *w = (ev_stat *)w_;
2517 w_ = w_->next; /* lets us remove this watcher and all before it */ 3266 w_ = w_->next; /* lets us remove this watcher and all before it */
2518 3267
2519 if (w->wd == wd || wd == -1) 3268 if (w->wd == wd || wd == -1)
2520 { 3269 {
2521 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3270 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2522 { 3271 {
3272 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2523 w->wd = -1; 3273 w->wd = -1;
2524 infy_add (EV_A_ w); /* re-add, no matter what */ 3274 infy_add (EV_A_ w); /* re-add, no matter what */
2525 } 3275 }
2526 3276
2527 stat_timer_cb (EV_A_ &w->timer, 0); 3277 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2532 3282
2533static void 3283static void
2534infy_cb (EV_P_ ev_io *w, int revents) 3284infy_cb (EV_P_ ev_io *w, int revents)
2535{ 3285{
2536 char buf [EV_INOTIFY_BUFSIZE]; 3286 char buf [EV_INOTIFY_BUFSIZE];
2537 struct inotify_event *ev = (struct inotify_event *)buf;
2538 int ofs; 3287 int ofs;
2539 int len = read (fs_fd, buf, sizeof (buf)); 3288 int len = read (fs_fd, buf, sizeof (buf));
2540 3289
2541 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3290 for (ofs = 0; ofs < len; )
3291 {
3292 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2542 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3293 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3294 ofs += sizeof (struct inotify_event) + ev->len;
3295 }
2543} 3296}
2544 3297
2545void inline_size 3298inline_size void ecb_cold
2546check_2625 (EV_P) 3299ev_check_2625 (EV_P)
2547{ 3300{
2548 /* kernels < 2.6.25 are borked 3301 /* kernels < 2.6.25 are borked
2549 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3302 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2550 */ 3303 */
2551 struct utsname buf; 3304 if (ev_linux_version () < 0x020619)
2552 int major, minor, micro;
2553
2554 if (uname (&buf))
2555 return; 3305 return;
2556 3306
2557 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2558 return;
2559
2560 if (major < 2
2561 || (major == 2 && minor < 6)
2562 || (major == 2 && minor == 6 && micro < 25))
2563 return;
2564
2565 fs_2625 = 1; 3307 fs_2625 = 1;
2566} 3308}
2567 3309
2568void inline_size 3310inline_size int
3311infy_newfd (void)
3312{
3313#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3314 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3315 if (fd >= 0)
3316 return fd;
3317#endif
3318 return inotify_init ();
3319}
3320
3321inline_size void
2569infy_init (EV_P) 3322infy_init (EV_P)
2570{ 3323{
2571 if (fs_fd != -2) 3324 if (fs_fd != -2)
2572 return; 3325 return;
2573 3326
2574 fs_fd = -1; 3327 fs_fd = -1;
2575 3328
2576 check_2625 (EV_A); 3329 ev_check_2625 (EV_A);
2577 3330
2578 fs_fd = inotify_init (); 3331 fs_fd = infy_newfd ();
2579 3332
2580 if (fs_fd >= 0) 3333 if (fs_fd >= 0)
2581 { 3334 {
3335 fd_intern (fs_fd);
2582 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3336 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2583 ev_set_priority (&fs_w, EV_MAXPRI); 3337 ev_set_priority (&fs_w, EV_MAXPRI);
2584 ev_io_start (EV_A_ &fs_w); 3338 ev_io_start (EV_A_ &fs_w);
3339 ev_unref (EV_A);
2585 } 3340 }
2586} 3341}
2587 3342
2588void inline_size 3343inline_size void
2589infy_fork (EV_P) 3344infy_fork (EV_P)
2590{ 3345{
2591 int slot; 3346 int slot;
2592 3347
2593 if (fs_fd < 0) 3348 if (fs_fd < 0)
2594 return; 3349 return;
2595 3350
3351 ev_ref (EV_A);
3352 ev_io_stop (EV_A_ &fs_w);
2596 close (fs_fd); 3353 close (fs_fd);
2597 fs_fd = inotify_init (); 3354 fs_fd = infy_newfd ();
2598 3355
3356 if (fs_fd >= 0)
3357 {
3358 fd_intern (fs_fd);
3359 ev_io_set (&fs_w, fs_fd, EV_READ);
3360 ev_io_start (EV_A_ &fs_w);
3361 ev_unref (EV_A);
3362 }
3363
2599 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3364 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2600 { 3365 {
2601 WL w_ = fs_hash [slot].head; 3366 WL w_ = fs_hash [slot].head;
2602 fs_hash [slot].head = 0; 3367 fs_hash [slot].head = 0;
2603 3368
2604 while (w_) 3369 while (w_)
… …
2609 w->wd = -1; 3374 w->wd = -1;
2610 3375
2611 if (fs_fd >= 0) 3376 if (fs_fd >= 0)
2612 infy_add (EV_A_ w); /* re-add, no matter what */ 3377 infy_add (EV_A_ w); /* re-add, no matter what */
2613 else 3378 else
3379 {
3380 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3381 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2614 ev_timer_again (EV_A_ &w->timer); 3382 ev_timer_again (EV_A_ &w->timer);
3383 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3384 }
2615 } 3385 }
2616 } 3386 }
2617} 3387}
2618 3388
2619#endif 3389#endif
… …
2636static void noinline 3406static void noinline
2637stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3407stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2638{ 3408{
2639 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3409 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2640 3410
2641 /* we copy this here each the time so that */ 3411 ev_statdata prev = w->attr;
2642 /* prev has the old value when the callback gets invoked */
2643 w->prev = w->attr;
2644 ev_stat_stat (EV_A_ w); 3412 ev_stat_stat (EV_A_ w);
2645 3413
2646 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3414 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2647 if ( 3415 if (
2648 w->prev.st_dev != w->attr.st_dev 3416 prev.st_dev != w->attr.st_dev
2649 || w->prev.st_ino != w->attr.st_ino 3417 || prev.st_ino != w->attr.st_ino
2650 || w->prev.st_mode != w->attr.st_mode 3418 || prev.st_mode != w->attr.st_mode
2651 || w->prev.st_nlink != w->attr.st_nlink 3419 || prev.st_nlink != w->attr.st_nlink
2652 || w->prev.st_uid != w->attr.st_uid 3420 || prev.st_uid != w->attr.st_uid
2653 || w->prev.st_gid != w->attr.st_gid 3421 || prev.st_gid != w->attr.st_gid
2654 || w->prev.st_rdev != w->attr.st_rdev 3422 || prev.st_rdev != w->attr.st_rdev
2655 || w->prev.st_size != w->attr.st_size 3423 || prev.st_size != w->attr.st_size
2656 || w->prev.st_atime != w->attr.st_atime 3424 || prev.st_atime != w->attr.st_atime
2657 || w->prev.st_mtime != w->attr.st_mtime 3425 || prev.st_mtime != w->attr.st_mtime
2658 || w->prev.st_ctime != w->attr.st_ctime 3426 || prev.st_ctime != w->attr.st_ctime
2659 ) { 3427 ) {
3428 /* we only update w->prev on actual differences */
3429 /* in case we test more often than invoke the callback, */
3430 /* to ensure that prev is always different to attr */
3431 w->prev = prev;
3432
2660 #if EV_USE_INOTIFY 3433 #if EV_USE_INOTIFY
2661 if (fs_fd >= 0) 3434 if (fs_fd >= 0)
2662 { 3435 {
2663 infy_del (EV_A_ w); 3436 infy_del (EV_A_ w);
2664 infy_add (EV_A_ w); 3437 infy_add (EV_A_ w);
… …
2689 3462
2690 if (fs_fd >= 0) 3463 if (fs_fd >= 0)
2691 infy_add (EV_A_ w); 3464 infy_add (EV_A_ w);
2692 else 3465 else
2693#endif 3466#endif
3467 {
2694 ev_timer_again (EV_A_ &w->timer); 3468 ev_timer_again (EV_A_ &w->timer);
3469 ev_unref (EV_A);
3470 }
2695 3471
2696 ev_start (EV_A_ (W)w, 1); 3472 ev_start (EV_A_ (W)w, 1);
2697 3473
2698 EV_FREQUENT_CHECK; 3474 EV_FREQUENT_CHECK;
2699} 3475}
… …
2708 EV_FREQUENT_CHECK; 3484 EV_FREQUENT_CHECK;
2709 3485
2710#if EV_USE_INOTIFY 3486#if EV_USE_INOTIFY
2711 infy_del (EV_A_ w); 3487 infy_del (EV_A_ w);
2712#endif 3488#endif
3489
3490 if (ev_is_active (&w->timer))
3491 {
3492 ev_ref (EV_A);
2713 ev_timer_stop (EV_A_ &w->timer); 3493 ev_timer_stop (EV_A_ &w->timer);
3494 }
2714 3495
2715 ev_stop (EV_A_ (W)w); 3496 ev_stop (EV_A_ (W)w);
2716 3497
2717 EV_FREQUENT_CHECK; 3498 EV_FREQUENT_CHECK;
2718} 3499}
… …
2763 3544
2764 EV_FREQUENT_CHECK; 3545 EV_FREQUENT_CHECK;
2765} 3546}
2766#endif 3547#endif
2767 3548
3549#if EV_PREPARE_ENABLE
2768void 3550void
2769ev_prepare_start (EV_P_ ev_prepare *w) 3551ev_prepare_start (EV_P_ ev_prepare *w)
2770{ 3552{
2771 if (expect_false (ev_is_active (w))) 3553 if (expect_false (ev_is_active (w)))
2772 return; 3554 return;
… …
2798 3580
2799 ev_stop (EV_A_ (W)w); 3581 ev_stop (EV_A_ (W)w);
2800 3582
2801 EV_FREQUENT_CHECK; 3583 EV_FREQUENT_CHECK;
2802} 3584}
3585#endif
2803 3586
3587#if EV_CHECK_ENABLE
2804void 3588void
2805ev_check_start (EV_P_ ev_check *w) 3589ev_check_start (EV_P_ ev_check *w)
2806{ 3590{
2807 if (expect_false (ev_is_active (w))) 3591 if (expect_false (ev_is_active (w)))
2808 return; 3592 return;
… …
2834 3618
2835 ev_stop (EV_A_ (W)w); 3619 ev_stop (EV_A_ (W)w);
2836 3620
2837 EV_FREQUENT_CHECK; 3621 EV_FREQUENT_CHECK;
2838} 3622}
3623#endif
2839 3624
2840#if EV_EMBED_ENABLE 3625#if EV_EMBED_ENABLE
2841void noinline 3626void noinline
2842ev_embed_sweep (EV_P_ ev_embed *w) 3627ev_embed_sweep (EV_P_ ev_embed *w)
2843{ 3628{
2844 ev_loop (w->other, EVLOOP_NONBLOCK); 3629 ev_run (w->other, EVRUN_NOWAIT);
2845} 3630}
2846 3631
2847static void 3632static void
2848embed_io_cb (EV_P_ ev_io *io, int revents) 3633embed_io_cb (EV_P_ ev_io *io, int revents)
2849{ 3634{
2850 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3635 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2851 3636
2852 if (ev_cb (w)) 3637 if (ev_cb (w))
2853 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3638 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2854 else 3639 else
2855 ev_loop (w->other, EVLOOP_NONBLOCK); 3640 ev_run (w->other, EVRUN_NOWAIT);
2856} 3641}
2857 3642
2858static void 3643static void
2859embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3644embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2860{ 3645{
2861 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3646 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2862 3647
2863 { 3648 {
2864 struct ev_loop *loop = w->other; 3649 EV_P = w->other;
2865 3650
2866 while (fdchangecnt) 3651 while (fdchangecnt)
2867 { 3652 {
2868 fd_reify (EV_A); 3653 fd_reify (EV_A);
2869 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3654 ev_run (EV_A_ EVRUN_NOWAIT);
2870 } 3655 }
2871 } 3656 }
2872} 3657}
2873 3658
2874static void 3659static void
2875embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) 3660embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2876{ 3661{
2877 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); 3662 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2878 3663
3664 ev_embed_stop (EV_A_ w);
3665
2879 { 3666 {
2880 struct ev_loop *loop = w->other; 3667 EV_P = w->other;
2881 3668
2882 ev_loop_fork (EV_A); 3669 ev_loop_fork (EV_A);
3670 ev_run (EV_A_ EVRUN_NOWAIT);
2883 } 3671 }
3672
3673 ev_embed_start (EV_A_ w);
2884} 3674}
2885 3675
2886#if 0 3676#if 0
2887static void 3677static void
2888embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3678embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2896{ 3686{
2897 if (expect_false (ev_is_active (w))) 3687 if (expect_false (ev_is_active (w)))
2898 return; 3688 return;
2899 3689
2900 { 3690 {
2901 struct ev_loop *loop = w->other; 3691 EV_P = w->other;
2902 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3692 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2903 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3693 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2904 } 3694 }
2905 3695
2906 EV_FREQUENT_CHECK; 3696 EV_FREQUENT_CHECK;
2907 3697
… …
2933 3723
2934 ev_io_stop (EV_A_ &w->io); 3724 ev_io_stop (EV_A_ &w->io);
2935 ev_prepare_stop (EV_A_ &w->prepare); 3725 ev_prepare_stop (EV_A_ &w->prepare);
2936 ev_fork_stop (EV_A_ &w->fork); 3726 ev_fork_stop (EV_A_ &w->fork);
2937 3727
3728 ev_stop (EV_A_ (W)w);
3729
2938 EV_FREQUENT_CHECK; 3730 EV_FREQUENT_CHECK;
2939} 3731}
2940#endif 3732#endif
2941 3733
2942#if EV_FORK_ENABLE 3734#if EV_FORK_ENABLE
… …
2975 3767
2976 EV_FREQUENT_CHECK; 3768 EV_FREQUENT_CHECK;
2977} 3769}
2978#endif 3770#endif
2979 3771
3772#if EV_CLEANUP_ENABLE
3773void
3774ev_cleanup_start (EV_P_ ev_cleanup *w)
3775{
3776 if (expect_false (ev_is_active (w)))
3777 return;
3778
3779 EV_FREQUENT_CHECK;
3780
3781 ev_start (EV_A_ (W)w, ++cleanupcnt);
3782 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3783 cleanups [cleanupcnt - 1] = w;
3784
3785 /* cleanup watchers should never keep a refcount on the loop */
3786 ev_unref (EV_A);
3787 EV_FREQUENT_CHECK;
3788}
3789
3790void
3791ev_cleanup_stop (EV_P_ ev_cleanup *w)
3792{
3793 clear_pending (EV_A_ (W)w);
3794 if (expect_false (!ev_is_active (w)))
3795 return;
3796
3797 EV_FREQUENT_CHECK;
3798 ev_ref (EV_A);
3799
3800 {
3801 int active = ev_active (w);
3802
3803 cleanups [active - 1] = cleanups [--cleanupcnt];
3804 ev_active (cleanups [active - 1]) = active;
3805 }
3806
3807 ev_stop (EV_A_ (W)w);
3808
3809 EV_FREQUENT_CHECK;
3810}
3811#endif
3812
2980#if EV_ASYNC_ENABLE 3813#if EV_ASYNC_ENABLE
2981void 3814void
2982ev_async_start (EV_P_ ev_async *w) 3815ev_async_start (EV_P_ ev_async *w)
2983{ 3816{
2984 if (expect_false (ev_is_active (w))) 3817 if (expect_false (ev_is_active (w)))
2985 return; 3818 return;
2986 3819
3820 w->sent = 0;
3821
2987 evpipe_init (EV_A); 3822 evpipe_init (EV_A);
2988 3823
2989 EV_FREQUENT_CHECK; 3824 EV_FREQUENT_CHECK;
2990 3825
2991 ev_start (EV_A_ (W)w, ++asynccnt); 3826 ev_start (EV_A_ (W)w, ++asynccnt);
… …
3018 3853
3019void 3854void
3020ev_async_send (EV_P_ ev_async *w) 3855ev_async_send (EV_P_ ev_async *w)
3021{ 3856{
3022 w->sent = 1; 3857 w->sent = 1;
3023 evpipe_write (EV_A_ &gotasync); 3858 evpipe_write (EV_A_ &async_pending);
3024} 3859}
3025#endif 3860#endif
3026 3861
3027/*****************************************************************************/ 3862/*****************************************************************************/
3028 3863
… …
3068{ 3903{
3069 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3904 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3070 3905
3071 if (expect_false (!once)) 3906 if (expect_false (!once))
3072 { 3907 {
3073 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3908 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3074 return; 3909 return;
3075 } 3910 }
3076 3911
3077 once->cb = cb; 3912 once->cb = cb;
3078 once->arg = arg; 3913 once->arg = arg;
… …
3090 ev_timer_set (&once->to, timeout, 0.); 3925 ev_timer_set (&once->to, timeout, 0.);
3091 ev_timer_start (EV_A_ &once->to); 3926 ev_timer_start (EV_A_ &once->to);
3092 } 3927 }
3093} 3928}
3094 3929
3930/*****************************************************************************/
3931
3932#if EV_WALK_ENABLE
3933void ecb_cold
3934ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3935{
3936 int i, j;
3937 ev_watcher_list *wl, *wn;
3938
3939 if (types & (EV_IO | EV_EMBED))
3940 for (i = 0; i < anfdmax; ++i)
3941 for (wl = anfds [i].head; wl; )
3942 {
3943 wn = wl->next;
3944
3945#if EV_EMBED_ENABLE
3946 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3947 {
3948 if (types & EV_EMBED)
3949 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3950 }
3951 else
3952#endif
3953#if EV_USE_INOTIFY
3954 if (ev_cb ((ev_io *)wl) == infy_cb)
3955 ;
3956 else
3957#endif
3958 if ((ev_io *)wl != &pipe_w)
3959 if (types & EV_IO)
3960 cb (EV_A_ EV_IO, wl);
3961
3962 wl = wn;
3963 }
3964
3965 if (types & (EV_TIMER | EV_STAT))
3966 for (i = timercnt + HEAP0; i-- > HEAP0; )
3967#if EV_STAT_ENABLE
3968 /*TODO: timer is not always active*/
3969 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3970 {
3971 if (types & EV_STAT)
3972 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3973 }
3974 else
3975#endif
3976 if (types & EV_TIMER)
3977 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3978
3979#if EV_PERIODIC_ENABLE
3980 if (types & EV_PERIODIC)
3981 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3982 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3983#endif
3984
3985#if EV_IDLE_ENABLE
3986 if (types & EV_IDLE)
3987 for (j = NUMPRI; i--; )
3988 for (i = idlecnt [j]; i--; )
3989 cb (EV_A_ EV_IDLE, idles [j][i]);
3990#endif
3991
3992#if EV_FORK_ENABLE
3993 if (types & EV_FORK)
3994 for (i = forkcnt; i--; )
3995 if (ev_cb (forks [i]) != embed_fork_cb)
3996 cb (EV_A_ EV_FORK, forks [i]);
3997#endif
3998
3999#if EV_ASYNC_ENABLE
4000 if (types & EV_ASYNC)
4001 for (i = asynccnt; i--; )
4002 cb (EV_A_ EV_ASYNC, asyncs [i]);
4003#endif
4004
4005#if EV_PREPARE_ENABLE
4006 if (types & EV_PREPARE)
4007 for (i = preparecnt; i--; )
4008# if EV_EMBED_ENABLE
4009 if (ev_cb (prepares [i]) != embed_prepare_cb)
4010# endif
4011 cb (EV_A_ EV_PREPARE, prepares [i]);
4012#endif
4013
4014#if EV_CHECK_ENABLE
4015 if (types & EV_CHECK)
4016 for (i = checkcnt; i--; )
4017 cb (EV_A_ EV_CHECK, checks [i]);
4018#endif
4019
4020#if EV_SIGNAL_ENABLE
4021 if (types & EV_SIGNAL)
4022 for (i = 0; i < EV_NSIG - 1; ++i)
4023 for (wl = signals [i].head; wl; )
4024 {
4025 wn = wl->next;
4026 cb (EV_A_ EV_SIGNAL, wl);
4027 wl = wn;
4028 }
4029#endif
4030
4031#if EV_CHILD_ENABLE
4032 if (types & EV_CHILD)
4033 for (i = (EV_PID_HASHSIZE); i--; )
4034 for (wl = childs [i]; wl; )
4035 {
4036 wn = wl->next;
4037 cb (EV_A_ EV_CHILD, wl);
4038 wl = wn;
4039 }
4040#endif
4041/* EV_STAT 0x00001000 /* stat data changed */
4042/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4043}
4044#endif
4045
3095#if EV_MULTIPLICITY 4046#if EV_MULTIPLICITY
3096 #include "ev_wrap.h" 4047 #include "ev_wrap.h"
3097#endif 4048#endif
3098 4049
3099#ifdef __cplusplus 4050EV_CPP(})
3100}
3101#endif
3102 4051

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